GB 16899-1997 Safety specification for the manufacture and installation of escalators and moving walkways GB16899-1997
Some standard content:
GB16899
9—1997
This standard is equivalent to the European standard EN115:1995 "Safety Specification for the Manufacture and Installation of Escalators and Moving Walkways", and is equivalent to it in terms of technical content.
This standard makes the following changes to EN115:1995: 1. For the standards in the "referenced standards" of EN115:1995 that have been adopted as national standards in my country, this standard quotes the national standard code and name; for standards that have not been adopted by my country, such as EN294:1992, the relevant content is written into Appendix E. And the draft standards that are not cited, such as prEN1037, are deleted.
2. The technical requirement of 5.1.5.8b) in EN115:1995, "at least 1.2m", is changed to \It is recommended to increase to 1.2m\; 3. Delete the contents of a), b), c), d) and other contents of 13.1 in EN115:1995. Appendix A, Appendix B and Appendix C of this standard are standard appendices; Appendix D and Appendix E are indicative appendices. This standard shall come into force on February 1, 1998.
This standard is proposed by the Ministry of Construction of the People's Republic of China. This standard is under the jurisdiction of the National Technical Committee for Elevator Standardization. The drafting units of this standard are: Shanghai Escalator Factory, Shanghai Elevator Factory of China Schindler Elevator Co., Ltd., Otis Elevator Co., Ltd. of Tianjin, China, Mitsubishi Elevator Co., Ltd. of Shanghai, China, and Shanghai Jiaotong University. The main drafters of this standard are: Li Youjian, Sun Qianhua, Yang Xizhi, Sun Jie, Hong Zhiyu, and Zhu Changming. 136
GB16899-1997
EN115 Foreword
This European standard was drafted and revised by the working group "Escalators and Moving Walks" of WG2 of Technical Committee CEN/TC10\Passenger, freight and service elevators". This standard replaces EN115:1983. AFNOR serves as the secretary. This European Standard was drafted and revised by CEN on behalf of the European Community and the European Free Trade Commission. It also implements the essential requirements of the EC (European Community) directive.
Considering the interpretation requirements for the relevant clauses of EN115:1983 and the formal adoption of the Machinery Safety Guide (89/392/EEC), CEN/TC10 asked WG2 to revise EN115:1983. Considering the interpretation requirements of these clauses;
…eliminating the differences between the member states,
—covering the 89/392/EEC guide;
CEN/TC10/WG2 completed the task in 1991 after 9 working meetings. The main modifications are:
... repeated use of automatic restart;
horizontal spacing of handrails less than spacing of baseboards (see 5.1.5.8 for exceptions); at least two independent electrical devices for interrupting the supply of brakes; a modification of the requirements for a pair of safety circuits;
- roller conveyors added to the introduction, etc. (see 0.5.3). Although this draft is not completely consistent with EN 414 "Safety of machinery - Rules for the preparation and writing of safety standards", it is consistent with it in many important aspects. CEN's goal is to propose harmonized standards for escalators and moving walks that are consistent with the essential safety requirements of the Machinery Directive and the corresponding EFTA regulations whenever possible. The identified hazards are listed in Annex C (Annex to the standard). EN 414 will be considered in the next edition of EN 115. This European Standard shall become a national standard of the Member States, either by adopting an equivalent text or by re-issuing it, at the latest by July 1995, and any conflicting national standards shall be withdrawn at the latest by July 1995. According to the CEN/CENELEC Internal Regulations, the following countries shall implement this standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. 137
0 Introduction
National Standard of the People's Republic of China
Safety rules for the construction and installationof escalators and passenger conveyors
Safety rules for the construction and installationof escalators and passenger conveyorsGB 16899
—1997
This standard is the safety rules for escalators and passenger conveyors. Its purpose is to ensure the safety of persons and objects during operation, maintenance and inspection work and to prevent accidents. 0.1 All parts of escalators and moving walkways must be: 0.1.1 accurate in size, reasonable in mechanical and electrical structure, and made of defect-free materials with sufficient strength. Materials with asbestos are not allowed. 0.1.2 timely maintenance and good working condition, special attention should be paid to the degree of wear of the specified size of the parts, and the worn parts should be replaced when necessary.
0.2 This standard gives a certain example to illustrate the problem, which should not be considered as the only feasible structural design. Other solutions with equal functions and equal safety effects are permitted. 0.3 This standard does not exclude new developments in escalator and moving walkway technology. A new design should at least meet the various safety requirements of this standard.
0.4 Some escalators and moving walkways operate under specific conditions, which are called "public transportation escalators and public transportation moving walkways" in this standard. There are some additional requirements for this type of escalators and moving walkways, see the appendix of Appendix D). If it is a public transportation escalator or public transportation moving walkway, it should be clearly stated in the design stage (see 3.9 for judgment criteria and definitions).
0.5 Special provisions are as follows:
0.5.1 Fire protection and construction requirements vary from country to country and have not yet been harmonized internationally or in Europe. Therefore, this standard does not contain special requirements for fire protection and construction. However, it is recommended that escalators or moving walkways be made of flame-retardant materials as much as possible.
0.5.2 If escalators and moving walkways are used under special conditions, such as when they have to operate in the open air or in an explosive environment, or when they are used as emergency exits in exceptional circumstances, the corresponding design criteria, parts, materials and instructions for use should be used in accordance with these special conditions. In addition, when escalators or moving walkways are operated in the open air, it is recommended that users provide roof sheds and enclosures. 0.5.3 For special means of transport, such as trolleys, suitcases with rollers and luggage trolleys, etc., to be transported on escalators or moving walkways, special measures should be coordinated and agreed upon between the manufacturer of the escalator or moving walkway, the manufacturer of the means of transport and the customer. In implementing these measures and selecting the means of transport, the conditions specified in 8.2.1 for steps, pallets or belts must be carefully considered. In this standard, no attempt has been made to accommodate these measures to various conditions and to standardize them. 0.6 This standard does not include requirements for the service life of escalators and moving walkways, as this depends on the installation site and the specific conditions of use by the user.
0.7 In formulating this standard, careless behavior by users in certain situations has been noted, but this standard considers normal use rather than abuse.
Approved by the State Administration of Technical Supervision on July 2, 1997 138
Implementation on February 1, 1998
GB16899—1997
0.8 A national technical committee for elevator standardization has been established to clarify the spirit of the established standard clauses and to clarify the requirements for special circumstances, as necessary.
1 Scope
1.1 This standard applies to all newly manufactured escalators and moving walkways (plate or belt type). 1.2 Existing escalators and moving walks in use are not subject to this standard. However, it is recommended that they comply with this standard. 1.3 If certain dimensions in this standard cannot be achieved due to structural conditions in the original building, the requirements may be changed in individual cases if necessary.
Note: See also 0.5 and 0.6.
2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. At the time of publication of this standard, the versions shown are valid. All standards are subject to revision, and parties using this standard should explore the possibility of using the latest versions of the following standards. Gl3/T2423.5--1995 Environmental testing for electric and electronic products Part 2: Test methods Test Ea and guidance: Shock (idtIEC 68-2-27:1987)
GB/T2423.10--1995 Environmental testing for electric and electronic products Part 2: Test methods Test Fc and guidance: Vibration (sinusoidal) (idtIEC 68-2-6:1982)
GB 4208--93
3 Enclosure protection degree (IP code) (eg VIEC529: 1989) 2 Copper foil phenolic paper laminate for printed circuits GB 4723--92
GB 4724--92
Copper foil epoxy paper laminate for printed circuits Copper foil epoxy glass cloth laminate for printed circuits GB 4725-92
Rated voltage 450/750V and below Rubber insulated flexible cables Part 2 General purpose rubber sheathed flexible cables GB5013.2.-85
Rated voltage 450/750V and below Polyvinyl chloride cables (wires) Cables (wires) for fixed installation GB 5023.2—85
Flexible cables (wires) for connecting polyvinyl chloride cables (wires) with rated voltages up to and including 450/750V GB 5023.3—85
GB7251-87 Low-voltage complete switchgear and controlgear 3 Adhesive sheet prepreg materials for multilayer printed boards (eqvIEC249-3:1981) GB 10243—88
GB 13028 91
Technical requirements for isolation transformers and safety isolation transformers (eqvIEC742: 1983) (B13539.192 Basic requirements for low-voltage fuses GB/T14048.1-93 General rules for low-voltage switchgear and controlgear (eqvIEC947-1: 1988) GB14048.4--93 Low-voltage switchgear and controlgear Low-voltage electromechanical contactors and motor starters (eqvIEC947-4-1: 1990)
GB 14048.5-93
Low-voltage switchgear and controlgear Control circuit appliances and switch elements Part 1: Electromechanical control circuit appliances (egvIEC947-5-1: 1990) GB 14821. 1----93
Protection against electric shock of electrical installations in buildings (eqvIEC364-4-41:1992) GB/T15651--1995 Semiconductor devices Discrete devices and integrated circuits Part 5: Optoelectronic devices (idtIEC747-5:1992
GB/T 15706. 2-
21995 Basic concepts and general principles for design of machinery safety Part 2: Technical principles and specifications (eqvISO)/TR 12100-2:1992)
GB/T 16935. 1 --1997
Insulation configuration of equipment in low-voltage systems Part 1: Principles, requirements and tests (idtIEC664-1:1992)
GB16895.31997 Electrical installations in buildings Selection and installation of electrical equipment Grounding configuration and protective conductor (idtIFC
364-5-54:1980)
SJ/Z 9033--87
7 Printed circuit boards Part 1: General guidance for specification developers (eqvIEC326-1:1984) 139
3 Definitions
This standard adopts the following definitions.
3.1 Escalator
GB16899-1997
Fixed electrically driven equipment with a circulating moving staircase that transports passengers upward or downward in an inclined manner (see also 0.5.3). 3.2 Passenger conveyor A fixed electric drive device with a circular moving walkway (e.g. plate or belt type) for horizontal or inclined transportation of passengers (see also 0.5.3). 3.3 Handrail
A moving part for passengers to hold.
3.4 Comb
A part located at the exits at both ends to facilitate the transition of passengers and to engage with the steps, pedals or belts. 3.5 Deflector device
An additional device that minimizes the risk of foreign objects being caught between the steps and the apron. 3.6 Rated speed
The running speed of the steps, pedals or belts of escalators and moving walkways when unloaded, which is also the speed designed and determined by the manufacturer and actually operated.
3.7 Angle of inclination The maximum angle between the running direction of the steps, pedals or belts and the horizontal plane. 3.8 Theoretical capacity theoretical capacity The number of people theoretically transported per hour by an escalator or moving walkway. To determine the theoretical capacity, it is assumed that a step with an average depth of 0.4 m or a pallet or belt with a visible length of 0.4 m can carry:
1 person when the nominal width z1 = 0.6 m
1.5 people when the nominal width z1 = 0.8 m
2 people when the nominal width zi = 1.0 m
The theoretical capacity is calculated according to formula (1):
In the formula: ct—
theoretical capacity, person/h;
rated speed, m/s;
— coefficient.
For commonly used widths, the table values are:
When zl=0.6m, k=1.0
When z1=0.8m, k=1.5
When z=1.0m, k=2.0
The theoretical conveying capacity calculated by formula (1) is shown in Table 1.04
X3600Xk
Table 1 Theoretical conveying capacity
Nominal width
4.500 people/h
6 750 people/h
9000 people/h
5850 people/h
8775 people/h
11 700 people/h
degrees, m/s
6750 people/h
10125 people/h
13500 people/h
GB16899—1997
public service escalator/passenger conveyor3.9 Public transport type escalator or moving walk is applicable to escalators or moving walks operating under the following working conditions: a) It is an integral part of a public transport system, including exits and entrances; b) It is suitable for weekly operation time of about 140 hours, and in any 3-hour interval, the continuous heavy load time is not less than 0.5 hours, and its load should reach 100% of the braking load (see 12.4.4.1 and 12.4.4.3). 4 Parameter symbols
The measurement units are all in the International System of Units (SI) (see Table 2). Table 2 Parameter symbol table
5.1.5.7.1
5. 3 and 8. 1. 3
Theoretical conveying capacity
Rated speed
Coefficients for different step widths
Name (in the order of appearance in the standard) Vertical distance between the upper edge of the apron plate or the bottom of the fold line of the inner cover plate and the step, pedal or belt tread Inner cover plate and guard wall Inclination angle of inner cover plate
Horizontal part of the inner cover plate directly connected to the guard wall Horizontal distance from the root of the comb plate teeth to the turning end of the handrail, including the handrail The root of the comb plate teeth
Vertical clear height above the step, pedal or belt Height of the vertical anti-collision baffle
Distance between the center line of the handrail and the obstacle Nominal width of the load-bearing working surface (step, pedal or belt) Distance between supports
Handrail water level measured from the root of the comb plate teeth to the turning end Length of flat part Distance between the handrail opening and the side of the guide rail or handrail bracket Horizontal distance between the outer edge of the handrail and the wall or other obstacle Width of handrail
Distance between handrail and the edge of the wall
Distance between the center lines of handrail
Distance between skirt boards
Distance between the handrail turning end entrance and the floor Horizontal distance between the handrail turning end vertex and the turning end entrance Vertical distance between the handrail and the front edge of the step, tread or belt surface Step height
Step depth
8.2.3.2 and 8.2.4.2
Groove width
Parameter symbol
8.2.3.3 and
8.2.3.4 and
8. 2. 4. 6.1.1
11.3.1 and 11.4.1
11. 3. 2 and 11. 4.2
Depth of groove
Width of tooth
GB16899—1997
Table 2 (end)
Name (in the order of appearance in the standard) Transverse distance between supporting rollers
Design angle of comb teeth
Angle of inclination of escalator or moving walkway Depth of engagement between comb teeth and tread groove
Distance between tread surface and root of comb teeth
Intersection line between comb teeth and tread surface
5 Hoardings, adjacent areas, metal structures and lighting 5.1 Hoardings of escalators and moving walkways 5.1.1 General
Parameter symbol Unit
5.1.1.1 Except for the steps, treads or belts that passengers can step on and the handrails that can be touched, all mechanical moving parts of escalators or moving walkways should be completely enclosed in hoardings or walls without holes. Holes for ventilation are allowed. 5.1.1.2 If measures are taken to avoid danger to the public (e.g. locked doors and only designated personnel are allowed to enter), moving parts may be left without enclosures.
5.1.1.3 Accumulated debris (such as grease, oil, dust, paper, etc.) may pose a fire hazard, so it should be possible to clean the dirt inside the enclosure. If such cleaning is not possible, other measures (such as sprinkler systems or other fire extinguishing systems) should be taken to eliminate the fire hazard. 5.1.2 The enclosure should have sufficient mechanical strength and rigidity. 5.1.3 Inspection doors and trap doors
5.1.3.1 Inspection doors and trap doors should only be located where equipment inspection and maintenance are required. 5.1.3.2 Inspection doors and trap doors can only be opened with a key or a special tool, which should only be in the hands of designated personnel.
If a person is already inside the inspection door or trap door, the door should be able to be opened from the inside even without a key. 5.1.3.3 Inspection doors or trap doors leading to adjacent escalators or moving walkways shall be equipped with safety contacts in accordance with 14.1.2 so that when these doors are open, the adjacent escalators or moving walkways cannot be operated. 5.1.3.4 Inspection doors and trap doors shall be imperforate and meet the same conditions as required for ring plates (see 5.1.2). 5.1.4 Ventilation holes
No contact with any moving parts through the ventilation holes is allowed [see Appendix E (Informative Appendix). 5.1.5 Handrails (see Figure 2)
5.1.5.1 Handrails shall be installed on both sides of the escalator or moving walkway. The handrails usually consist of the following parts: 5.1.5.1.1 Skirt (A)
The part of the skirting adjacent to the steps, pallets or belts on both sides (see Figure 2 and 5.1.5.6). 5.1.5.1.2 Inner cover (B)
The cover connecting the apron and the wall guard.
5.1.5.1.3 Wall guard (C)
The inner guard installed between the apron or inner cover and the outer cover below the handrail. 1
5.1.5.1.4 Outer cover (E)
GB16899—1997
The cover on the outer decorative panel below the handrail. 5.1.5.1.5 Outer decorative panel (D)
The outer guard that encloses the escalator or moving walkway from the outer cover. 5.1.5.1.6 Handrail turning end
Located at both ends of the handrail device at the entrance and exit, where the handrail changes its direction of movement. 5.1.5.2 The handrail device should not have any part for people to stand on, and measures should be taken to prevent people from climbing over the handrail device to avoid the risk of falling.
Generally, in the lower standing section of the escalator, the handrail device may be climbed over, while the handrail device in the upper section can prevent climbing over, so the handrail device should be prevented from being climbed over in the lower section. For example, it can be achieved by setting a smooth outer cover of the handrail device, or setting up a railing parallel to the handrail device, or setting an additional guardrail perpendicular to the handrail device. 5.1.5.3 When a uniform force of 900N is applied vertically to the surface of the handrail belt with a length of 0.5m, no part of the handrail device should produce permanent deformation, fracture or displacement.
5.1:5.4 The part of the handrail device facing the step, pedal or belt side should be smooth. When the installation direction of the pressure strip or inlay is not consistent with the running direction, its protruding height should not exceed 3mm, and it should be strong and have rounded or chamfered edges. Such beadings or trims are not allowed to be installed on the apron.
The joints of the cover plates along the running direction (especially the joints between the apron and the baseboard) should be constructed so as to minimize the risk of snagging.
The gaps between the baseboards should not be greater than 4 mm, and their edges should be rounded and chamfered. The baseboards should have sufficient strength and rigidity. When a force of 500N is applied vertically to an area of 25cm2 at any part of their surface, no depression greater than 4mm and no permanent deformation should occur (a tolerance value may be given). Glass is allowed to be used to make baseboards. Such glass should be single-layer safety glass (tempered glass) that will not break into pieces and have sufficient strength and rigidity. The thickness of the glass should not be less than 6mm. 5.1.5.5 Projections and recesses should have no knife edges. 5.1.5.6 The apron plate should be vertical. The vertical distance h2 between the upper edge of the apron plate or the bottom of the inner cover fold line or the rigid part of the anti-pinch device (see 3.5) and the step, pedal or tape tread should not be less than 25mm (see Figure 2). 5.1.5.6.1 The apron plate should be very strong, smooth and butt-jointed. However, for long-distance moving walkways, other special connection methods can be used instead of butt joints for the joints of the apron plates where they cross the building expansion joints. 5.1.5.6.2 For the most unfavorable part of the apron plate, a force of 1500N is applied vertically to a surface of 25cm2. The depression should not be greater than 4mm and should not cause permanent deformation. 5.1.5.6.3 For escalators, the possibility of obstruction between the steps and the apron plates should be reduced. To this end, the following three conditions should be met: - The apron plates should have sufficient rigidity as specified in 5.1.5.6.2; - The gap should meet the requirements of 11.2.1;
- The apron plates can be made of appropriate materials or have appropriate coatings on them to reduce the friction coefficient. In addition, suitable anti-pinch devices can be added, or yellow markings can be provided at both ends of the step treads. 5.1.5.7 Inner cover plates and wall panels The inclination angle with the horizontal plane shall not be less than 25° (see Figure 2). 5.1.5.7.1 This clause does not apply to the horizontal part of the inner cover connected to the baseboard (see b. in Figure 2). The above horizontal part b (up to the baseboard) shall be less than 30mm. 5.1.5.7.2 For each side of the inner cover with an inclination angle less than 45° with the horizontal plane, its horizontal width 63 shall be less than 0.12m (see Figure 2).
5.1.5.8 The horizontal distance between each point at the lower position of the two baseboards (measured perpendicular to the running direction) shall not be greater than the corresponding point at the upper position The horizontal distance between the guardrails at any position shall be less than the horizontal distance between the two handrails. Exception: If the horizontal distance between the handrails is less than the distance between the guardrails under the handrails (excluding the apron area), the following additional requirements of 1.13 shall be met:
GB16899—1997
a) The rated speed shall not exceed 0.5m/s, and the step width 2i shall be at least 0.8m; b) The distance l2 between the intersection line of the comb teeth and the projection of the handrail turning end shall comply with the requirements of 5.1.5.9, and it is recommended to increase to 1.2m. 5.1.5.9 The longitudinal horizontal distance from the turning end of the handrail, including the handrail, to the root of the tooth of the comb plate shall not be less than 0.6m (see the sum and figure in Figure 1).
5.2 Adjacent areas of escalators and moving walkways 5.2.1 At the entrances and exits of escalators and moving walkways, there shall be sufficient unobstructed areas to accommodate passengers. The width of the clear zone is at least equal to the distance between the centre lines of the handrails (see 6 in Figure 2) and its depth is at least 2.5 m, measured from the end of the handrail turning end. If the width of the zone is increased to more than twice the centre distance of the handrails, its depth may be reduced to 2 m. It must be noted that the clear zone should be considered as part of the entire traffic system and therefore may need to be enlarged. Multiple escalators or moving walkways in a row without intermediate exits should have the same theoretical conveying capacity, see 14.2.2.4.1j. 5.2.2 Escalators and moving walkways should have a safe footing surface at the exit area, the depth of which is at least 0.85 m measured from the root of the comb plate (see Figure 1 and Figure X, 1,), except for the comb plates mentioned in 8.3. 5.2.3 The vertical clear height above the steps of an escalator or the pedals or belt of a moving walkway should not be less than 2.3 m (see ha in Figure 1). 5.2.4 If building obstacles may cause personal injury, appropriate preventive measures should be taken (see 7.3.1). In particular, at the intersection with the floor and between each escalator or moving walkway, a vertical anti-collision baffle without sharp edges should be installed above the outer cover plate, and its height should not be less than 0.3m, such as a triangle plate without holes (see hs in Figure 1). If the distance bg between the center line of the handrail and any obstacle is not less than 0.5m, this requirement does not need to be followed (see Figure 2). 5.3 Metal structure of escalator or moving walkway The load based on the design of the metal structure of the escalator or moving walkway is: the dead weight of the escalator or moving walkway plus a passenger load of 5000N/m [bearing area = 21×l1, where z (see Figure 2) is the nominal width of the escalator or moving walkway and li (see Figure 1) is the distance between the two supports]. The passenger load does not need to increase the dynamic load coefficient. The maximum deflection calculated or measured based on the passenger load should not exceed 1/750 of the support distance 11. For public transportation escalators and moving walkways, the maximum deflection calculated or measured based on the passenger load should not exceed 1/1000 of the support distance.
5.4 Lighting
5.4.1 There should be sufficient and appropriate lighting on the escalator or moving walkway and its surroundings, especially near the comb plate. 5.4.2 Lighting is allowed to be installed in the surrounding space or in the equipment itself. The illuminance at the exit, including the comb plate, should be consistent with the illuminance required for the area. The illuminance at the exit of indoor or outdoor escalators and moving walkways is at least 501x or 151x respectively, which are values measured on the ground.
5.5 Transportation
Fully assembled escalators or moving walkways, or parts of escalators and moving walkways that cannot be transported manually, should: a) be equipped with connecting accessories for lifting equipment to carry, or devices for transportation; b) or designed. a connection that can be hung and lifted (such as threaded holes); c) or design a lifting device that can be easily hung on the lifting equipment and other means of transportation. 6 Machine room
6.1 General
Non-designated personnel are not allowed to enter the drive and steering station, machine room and separated machine room in the metal structure. These machine rooms are only allowed to store equipment necessary for the operation of escalators or moving walkways. Fire alarms, equipment for direct fire extinguishing and fire-fighting equipment such as alcohol spray heads that can effectively prevent accidental damage are allowed to be placed in the machine room. Lifting drive equipment is also allowed to be placed in these machine rooms. Note: Refer to the maintenance requirements and inspection instructions in Chapter 16. 6.2 Population
GB16899—1997
6.2.1 The passages and populations entering each machine room should be convenient and safe. The net height at the entrance shall not be less than 1.8m.
6.2.2 Designated personnel shall only use stairs to access the inspection doors and trap doors of the separated machine room and the drive and steering stations. Where stairs are difficult to install, ladders that meet the following conditions may be used: a) The ladder should not slip or tip over;
b) The ladder should be positioned at an angle of 65° to 75° to the horizontal plane during use. Exceptions are for fixed ladders or ladders with a height of less than 1.5 m; c) For ladders with a maximum vertical height of 1.5 m, the distance between the wall and the ladder rungs should be at least 0.15 m; d) Ladders must be used exclusively and should always be kept nearby and available for use at any time. Necessary provisions should be made for this purpose; e) The upper part of the ladder should be provided with one or more easy-to-grip handles; f) If the ladder is non-fixed, it should be provided with fixed attachment points. 6.3 Structure and facilities of the machine room, drive and steering station 6.3.1 General
6.3.1.1 There should be a large enough standing area and space in the machine room and steering station without any fixed equipment. The area of the open space should be at least 0.3m2. The length of its smaller side should not be less than 0.5m. 6.3.1.2 When the main drive device or brake is installed between the passenger branch and the return branch of the steps, pedals or belts, an appropriate nearly horizontal footing platform should be provided in the working section. Its area should not be less than 0.12m2 and the minimum side size should not be less than 0.3m. The platform can be fixed or movable. In the latter case, it should be placed nearby for standby use. Necessary regulations should be made for this purpose. 6.3.1.3 The space separating the machine room, drive and steering station and the fixed control panel should enable maintenance personnel to easily and safely approach all equipment, especially the electrical connection parts. The space should be provided according to the following requirements: a) There should be a free space with a depth of 0.8m in the area in front of the control panel or control cabinet within the width (but not less than 0.5m); b) There should be a free space with a bottom area of at least 0.5m×0.6m where necessary maintenance and inspection of moving parts are required; c) The width of the passage leading to these free spaces should be at least 0.5m. Special case: In places without moving parts, the width of the passage is allowed to be reduced to 0.4m. 6.3.1.4 In front of the separation room, drive and steering station and fixed control panel, the net height for activities and work should not be less than 2m in any case. 6.3.2 Lighting The electrical lighting of the separation room, each drive and steering station should be permanent and fixed. The electrical lighting devices in the drive room, steering station and machine room in the metal structure should be regular portable running lights; one or more power sockets should be provided at each of these locations. The power supply for electrical lighting devices and power sockets should be separated from the main power supply and supplied by a separate power supply cable or a branch cable connected before the main power switch of the escalator or moving walkway (see 13.4.1 and 13.6). 6.3.3 Stop switch
The stop switch should be able to stop the escalator or moving walkway in the driving and turning stations. For escalators and moving walkways whose driving devices are installed between the passenger branch and the return branch of the steps, pallets or belts or are set outside the turning station, stop switches should be provided in the driving device section. The operation of these stop switches should be able to cut off the power supply of the driving main machine and brake the working brake, effectively stopping the escalator or moving walkway.
The stop switch should be:
a) manual switch type;
b) with clear and permanent switching position markings; c) safety contacts that comply with 14.1.2.2.
GB 16899 --1997
Special case: If the machine room is equipped with a main switch that complies with the provisions of 13.4, the stop switch may not be provided. 7 Handrail (see Figures 1 and 2)
7.1 General
A running handrail shall be provided on the top of each handrail device, and its running direction shall be the same as that of the steps, pedals or belts. The running speed of the handrail shall be allowed to have a tolerance of 0 to +2% relative to the speed of the steps, pedals or belts. 7.2 The horizontal portion of the handrail extending beyond the comb plate at the exit shall be at least 0.3 m long (see Figure 1) from the root of the comb plate (see Figure 1 and L in Figure X).
For inclined moving walkways, if the exit is not provided with a horizontal section, the inclination angle of the handrail extension section is allowed to be the same as that of the moving walkway.
7.3 Cross-sectional shape and position of handrails
7.3.1 The cross-sectional shape of handrails and the shaped assembly of their guide rails of handrails shall not pinch fingers and hands. The distance between the handrail opening and the guide rail or handrail support shall not exceed 8 mm in any case (see bg and b,\ in Figure 2, W).
The horizontal distance b1 between the outer edge of the handrail and the wall or other obstacle (see Figure 2) shall not be less than 80 mm in any case. This distance shall be maintained to a height of at least 2.1 m above the steps of escalators and above the pedals or belts of moving walkways. This height may be reduced as appropriate if appropriate measures can be taken to avoid the risk of injury. For escalators arranged parallel or staggered adjacent to each other, the distance between the outer edges of the handrails shall be at least 120 mm. 7.3.2 The width b2 of the handrail shall be between 70 mm and 100 mm (see Figure 2, W). 7.3.3 The distance bs between the handrail and the edge of the guard wall shall not exceed 50 mm (see Figure 2). 7.4 The distance between the center lines of the handrails
The value of the distance br between the center lines of the handrails exceeding the distance between the apron plates shall not exceed 0.45 m (see b, and z2 in Figure 2). 7.5 Protection of the handrail entrance
7.5.1 The distance h3 between the lowest point of the handrail at the entrance of the handrail turning end and the floor shall not be less than 0.1 m and not more than 0.25 m (see Figures 1 and 2).
7.5.2 The horizontal distance 14 between the vertex of the handrail turning end and the handrail entrance shall be at least 0.3 m (see Figure 1). 7.5.3 Finger and hand protection devices shall be provided at the entrance of the handrail at the turning end of the handrail, and a switch complying with the provisions of 14.2.2.4.1k) shall be installed.
7.6 The vertical distance hl between the handrail above the step, pedal or tape and the front edge of the step or pedal surface or tape surface should not be less than 0.9m and not more than 1.1m (see Figures 1 and 2).
7.7 Guide
The handrail shall be guided and tensioned so that it does not come off the handrail rail during normal operation. 7.8 Handrail breakage monitoring device for escalators or moving walkways used for public transportation If the manufacturer does not provide proof that the breaking load of the handrail is at least 25kN, a device shall be provided to stop the escalator or moving walkway in the event of a handrail breakage [see 14.2.2.4.1m)]. 8 Steps, pallets, belts and combs
8.1 Dimensions (see Figure 3)
8.1.1 The step height α shall not exceed 0.24m. If the escalator is allowed to be used as an emergency exit when it is not in operation, the step height shall not exceed 0.21m. 8.1.2 The step depth y shall be at least 0.38m. rs
GB168991997
8.1.3 The nominal width z1 of escalators and moving walkways shall not be less than 0.58m and not more than 1.1m. For moving walkways with an inclination angle of not more than 6°, a larger width is allowed. 8.2 Structure of steps, pallets and belts (see Figure X in Figure 1 and Figure 3) 8.2.1 Steps, pallets or belts shall be able to withstand the loads in operation, and the deformation caused by continuous uniform load of 6000N/m2 shall not hinder the normal function of the escalator or moving walkway. To determine the size of the belt, its effective width multiplied by the area of 1m long shall be used as the basis for this specific load (in addition, it shall comply with the provisions of 8.2.4.6.1).
8.2.2 Steps and pallets shall meet the following test requirements: 8.2.2.1 Static load test
8.2.2.1.1 Steps
Steps shall be subjected to bending deformation test. The test method is to apply a force of 3000N (including the weight of the pad) vertically through a steel pad in the center of the step tread. The pad has an area of 0.2m×0.3m and a thickness of at least 25mm, and its 0.2m side is parallel to the front edge of the step, and the 0.3m side is perpendicular to the front edge of the step. During the test, the deflection measured on the step tread should not be greater than 4mm, and there should be no permanent deformation (a tolerance value can be given). This test should be carried out on the complete step component, including the roller (non-rotating) through shaft or short shaft (if any), in a horizontal position (horizontal support) and the maximum inclination angle applicable to the step (inclined support). There is no need to retest for steps with all inclination angles less than the above maximum inclination angle; similarly, it is not necessary to test the installed steps, that is, the steps assembled with the escalator guide rails and metal structure. 8.2.2.1.2 PedalWww.bzxZ.net
The pedal should be subjected to a bending deformation test. The test method is to apply a force of 7500N (including the weight of the pad) on the pedal area of 1m2. This force is applied vertically to the center of the tread through a steel pad with an area of 0.30m×0.45m and a thickness of at least 25mm, and the 0.45m side is parallel to the side of the pedal.
For pedals of larger and smaller areas, the applied test force and the load (pad) area need to be changed proportionally. At this time, the side length ratio of the load surface (pad) should be 1:1.5; however, the vertically applied force should not be less than 3000N (including the weight of the pad), the pad area should not be less than 0.2m×0.3m, and its thickness should not be less than 25mm. During the test, the deflection measured on the pedal surface should not be greater than 4mm, and there should be no permanent deformation (a tolerance value can be given). The test should be carried out on the complete pedal, including the roller (non-rotating) through-axle or short axle (if any) in a horizontal position. The installed pedals, i.e. the pedals assembled with the white moving walkway guide rails and metal structure, do not need to be tested. 8.2.2.2 Dynamic load test
8.2.2.2.1 Steps
The steps shall be tested with the roller (non-rotating) through-axle or short-axle (if any) at their maximum applicable inclination angle (inclined support). The test applies a pulsating load between 500 and 3000N for at least 5×10″ cycles at any frequency between 5 and 20Hz to obtain an undisturbed resonant force wave. The load shall be applied vertically to a steel plate with a size of 0.2m×0.3m and a thickness of at least 25mm on the pedal surface. The steel plate shall be placed in the center of the pedal surface in accordance with the provisions of 8.2.2.1.1. During the test, the steps shall not show any breakage and no permanent deformation greater than 4mm shall be produced on the pedal surface. If the roller is damaged during the test, it may be replaced. 8.2.2.2.2 Pedals
Especially in terms of size All pedals shall be tested in a horizontal position together with the roller (non-rotating) through-axle or short-axle (if any). The test applies a pulsating load between 500 and 3000N at any frequency between 5 and 20 Hz for at least 5×10° cycles to obtain: a non-interference resonant force wave. The load shall be applied vertically to a steel plate T. with a size of 0.2m×0.3m and a thickness of at least 25mm in the center of the pedal surface.
Through the test, the pedal shall not show any fracture phenomenon and no permanent deformation greater than 4mm shall be produced on the pedal surface. During the test, if the roller is damaged, it may be replaced. 1.173m, with a thickness of not less than 25mm. During the test, the deflection measured on the tread surface should not be greater than 4mm, and there should be no permanent deformation (a tolerance value may be given). The test should be carried out on the complete tread, including the roller (non-rotating) through-axle or short axle (if any) in a horizontal position. The installed tread, that is, the tread assembled with the white moving walkway guide rail and the metal structure, does not need to be tested. 8.2.2.2 Dynamic load test
8.2.2.2.1 Steps
The steps should be tested with the roller (non-rotating) through-axle or short axle (if any) at their maximum applicable inclination angle (inclined support). The test applies a pulsating load between 500 and 3000N for at least 5×10″ cycles at any frequency between 5 and 20 Hz to obtain an undisturbed resonant force wave. The load shall be applied vertically to a steel plate with a size of 0.2m×0.3m and a thickness of at least 25mm on the pedal surface. The steel plate shall be placed in the center of the pedal surface in accordance with the provisions of 8.2.2.1.1. During the test, the steps shall not break and no permanent deformation greater than 4mm shall occur on the pedal surface. During the test, if the roller is damaged, it may be replaced. 8.2.2.2.2 Pedal
Especially in terms of size All pedals shall be tested in a horizontal position together with the roller (non-rotating) through-axle or short-axle (if any). The test applies a pulsating load between 500 and 3000N at any frequency between 5 and 20 Hz for at least 5×10° cycles to obtain: a non-interference resonant force wave. The load shall be applied vertically to a steel plate T. with a size of 0.2m×0.3m and a thickness of at least 25mm in the center of the pedal surface.
Through the test, the pedal shall not show any fracture phenomenon and no permanent deformation greater than 4mm shall be produced on the pedal surface. During the test, if the roller is damaged, it may be replaced. 1.173m, with a thickness of not less than 25mm. During the test, the deflection measured on the tread surface should not be greater than 4mm, and there should be no permanent deformation (a tolerance value may be given). The test should be carried out on the complete tread, including the roller (non-rotating) through-axle or short axle (if any) in a horizontal position. The installed tread, that is, the tread assembled with the white moving walkway guide rail and the metal structure, does not need to be tested. 8.2.2.2 Dynamic load test
8.2.2.2.1 Steps
The steps should be tested with the roller (non-rotating) through-axle or short axle (if any) at their maximum applicable inclination angle (inclined support). The test applies a pulsating load between 500 and 3000N for at least 5×10″ cycles at any frequency between 5 and 20 Hz to obtain an undisturbed resonant force wave. The load shall be applied vertically to a steel plate with a size of 0.2m×0.3m and a thickness of at least 25mm on the pedal surface. The steel plate shall be placed in the center of the pedal surface in accordance with the provisions of 8.2.2.1.1. During the test, the steps shall not break and no permanent deformation greater than 4mm shall occur on the pedal surface. During the test, if the roller is damaged, it may be replaced. 8.2.2.2.2 Pedal
Especially in terms of size All pedals shall be tested in a horizontal position together with the roller (non-rotating) through-axle or short-axle (if any). The test applies a pulsating load between 500 and 3000N at any frequency between 5 and 20 Hz for at least 5×10° cycles to obtain: a non-interference resonant force wave. The load shall be applied vertically to a steel plate T. with a size of 0.2m×0.3m and a thickness of at least 25mm in the center of the pedal surface.
Through the test, the pedal shall not show any fracture phenomenon and no permanent deformation greater than 4mm shall be produced on the pedal surface. During the test, if the roller is damaged, it may be replaced. 1.17
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