Some standard content:
Engineering Construction Standard Full-text Information System
People's Republic of China
National Standard
GB10055—88
Safety Rules for Construction Hoists
Building hoists-Safetyrules
Published on September 15, 1988
Ministry of Construction of the People's Republic of China
Implementation on July 1, 1989
W Engineering Construction Standard Full-text Information System
National Standard of the People's Republic of China
Safety Rules for Construction Hoists
Building hoists-safetyrules
1 Subject Content and Scope of Application
This standard specifies the safety rules for the design, manufacture and installation of construction hoists (hereinafter referred to as hoists). This standard applies to hoists of various types and specifications included in GB10052. This standard does not apply to elevators, mine hoists and dispatching winches. 2 Reference standards
GB10052
Classification of construction hoists
GB10054 Technical conditions for construction hoists
GB10056
6 Test methods for construction hoists
GB10053
Acceptance rules for construction hoists
GB3811 Crane design specifications
3 Terms
3.1 Working state in service
GB10055—88
When the cage or working device is empty or fully loaded and is in any moving position above the lowest parking position, or when the cage is fully loaded and is in the lowest parking position, it is called the working state. 3.2 Freestanding hoist freestanding hoist includes the working conditions of the maximum free standing height of the non-attached hoist and the working conditions of the maximum free standing height of the attached hoist in the non-attached state.
3.3 Limit switch terminal stopping switch A switch or a group of switches that automatically stops the cage when it reaches the upper or lower final stop position according to the requirements. 3.4 Ultimate or final limits switch An emergency switch that stops the cage when it exceeds the limit switch and reaches its final point of overtravel. 3.5 Overtravel
The safety distance specified between the limit switch and the limit switch. 4 Metal structure
4.1 Metal structure design
The design, calculation and manufacture of metal structures shall comply with the provisions of GB3811 on strength, rigidity and stability under various working conditions and test conditions.
4.2 Stability
The stability moment of a freely erected elevator shall be at least 1.5 times the maximum overturning moment. Approved by the Ministry of Construction of the People's Republic of China on September 15, 1988 and implemented on July 1, 1989
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5 Foundation
5.1 Foundation Treatment
5.1.1 The foundation of the elevator shall be treated in accordance with the provisions of the instruction manual. The foundation shall be able to withstand all loads under the most unfavorable conditions when the elevator is working.
5.1.2 There shall be drainage facilities around the foundation.
5.2 Foundation Protection
5.2.1 Protective Fence
Protective fences shall be set up on the cage and counterweight lifting channel on the foundation. Lightweight and movable elevators may be enclosed by other measures. 5.2.2 Requirements for protective fences
5.2.2.1 Protective fences may be made of solid steel plates, punched steel plates, welded or woven meshes, steel pipes and steel sections. 5.2.2.2 The protective fence shall be able to withstand a 350N force applied vertically by an object without permanent deformation. The object is a flat equilateral square with a rounded edge radius of 3mm.
5.2.2.3 The foundation fence shall be equipped with mechanical interlock or electrical interlock. The mechanical interlock shall ensure that the foundation fence door can only be opened when the cage is at the specified position at the bottom. The electrical interlock shall ensure that the cage stops and cannot be started after the protective fence door is opened. 5.2.3 If the accessories or operation box are located inside the foundation protective fence of the elevator, a special area with a locking door shall be set up and separated from the foundation.
6 Stop floor
6.1 Each stop point shall be equipped with a floor door or a stop floor railing. 6.2 The floor door or the stop floor railing shall not protrude from the hoistway of the cage. 6.3 Floor door
6.3.1 The design of the floor door shall ensure that people cannot enter or exit when it is closed. 6.3.2 The floor door shall comply with the provisions of 5.2.2.1 and 5.2.2.2. An observation window shall be provided on the closed floor door at the sight line, the area of the window shall not be less than 250cm2 and shall not be equipped with glass.
6.3.3 The net height of the floor door shall not be less than 1.95m from the ground, and the difference between the net width of the floor door and the width of the cage entrance and exit shall not be greater than 120mm.
6.3.4 Horizontal sliding floor doors and vertical sliding floor doors shall be provided with guide devices on the corresponding upper and lower sides or both sides. 6.3.5 Vertical sliding floor doors shall have at least two independent suspension support systems. 6.3.6 The clamping force of the automatic closing sliding floor door or the folding floor door shall not exceed 150N and shall not produce shearing effect. 6.3.7 The opening and closing process of the mechanical transmission floor door shall be operated by the driver and shall not be directly controlled by the cage movement. 6.3.8 The floor door shall be equipped with electrical and mechanical interlocking devices. When the cage is in operation, the floor door can only be opened when the cage is located at the stop point ± 0.25m, and the cage will only start to operate when all the floor doors are closed. 6.3.9 For mechanically driven vertical sliding floor doors, if the door is opened manually and the required force is greater than 500N, no mechanical locking device is required.
6.3.10 The installation position of the floor door locking device and its accessories shall be set in a place where it is not easy for people to touch. 6.3.11 The floor door locking device shall be firm and reliable. 6.3.12 The floor door locking device shall be equipped with a protective cover and easy to maintain. 6.4 Floor stop railings
6.4.1 Floor stop railings shall be installed at places where there are no passage doors, and shall comply with the provisions of Articles 5.2.2.1 and 5.2.2.2. 6.4.2 The opening and closing of the floor stop railings may be manual, but shall not be directly controlled by the movement of the cage. 6.4.3 The floor guardrail shall have electrical and mechanical interlocking devices and shall comply with the provisions of Article 6.3.8. 6.5 When the cage is equipped with a flap door, the floor door or the floor guardrail can only be opened when the cage is located at the landing point ± 0.25m and the flap door is opened and resting on the landing point.
7 Cage
7.1 The clear height inside the cage shall not be less than 2m. The top and sides of the cage of the passenger and cargo elevator shall be enclosed except the door. 7.2 Material and mechanical strength
7.2.1 The cage structure shall be able to withstand all the tests specified in GB10056 and shall not produce permanent deformation after the test. And it shall comply with the provisions of Articles 5.2.2.1 and 5.2.2.2.
7.2.2 The bearing capacity of the bottom of the cage shall not be less than 250kg/m2. If the weight of each person is 80kg, the bottom area occupied by each person should not be less than 0.2m2.
7.2.3 The design strength of the cage top should be able to withstand a load of 1500N on any 0.4m2 area and a load of 500N at any point.
7.2.4 The cage top is only used for installation, erection, maintenance and inspection. Guardrails should be set around the top of the cage used for installation. The height of the guardrail should not be less than 1.05m. 7.2.5 An emergency exit should be set at the top of the cage and a special escalator should be provided. The exit area shall not be less than 0.4m×0.6m and equipped with a trap door that opens outwards. A safety switch is also installed. When the trap door is opened, the cage cannot be started. 7.2.6 Cage door
7.2.6.1 The width of the cage door should be the same as the width of the cage, and its height should not be less than 1.95m. 7.2.6.2 The layer (cage) door shall comply with the relevant provisions of 6.3.1 and 6.3.2. 7.2.6.3 The flap door shall have a load-bearing capacity considering the transportation of goods. 7.2.6.4 The cage door shall have an electrical or mechanical interlocking device, and the cage can only be started when the cage door is completely closed. 7.2.7 There shall be sufficient lighting inside the cage.
8 Counterweight
8.1 If there is a space or passage under the foundation of the elevator, the counterweight of the machine shall be provided with safety measures to prevent falling. 8.2 If metal fillers are used for the counterweight, measures shall be taken to prevent it from moving. If the lifting speed of the cage is not more than 1m/s, the metal fillers can be fixed with two or more tie rods.
8.3 The cage cannot be used to balance another cage. 9 Wire rope, pulley and electric pulley
9.1, wire rope
9.1.1 The selection of steel wire ropes shall comply with the provisions of GB1102 "Round Strand Steel Wire Rope". 9.1.2 Lifting Steel Wire Rope
9.1.2.1 For SS-type passenger and cargo lifts, the number of independent lifting steel wire ropes shall not be less than 2. The safety factor of independent lifting steel wire ropes shall not be less than 12. The total safety factor of heavy-duty and high-height steel wire ropes shall not be less than 8. 9.1.2.2 The nominal diameter of a single lifting steel wire rope shall not be less than 9mm, and the steel wire rope shall be electroplated or protected against corrosion. 9.1.3 Speed Limiter Steel Wire Rope
The nominal diameter of the speed limiter steel wire rope shall not be less than 8mm. 9.1.4 Floor door wire rope
The safety factor of the floor door wire rope shall not be less than 8.9.1.5 Wire rope head
9.1.5.1 The wire rope heads of each component shall be connected in a reliable manner, such as casting, braiding, forging and using wedge-shaped fasteners. If U-shaped rope clamps are used, there shall be no less than 3. The connection method shall comply with the provisions of relevant standards. 9.1.5.2 The strength of the wire rope head shall not be less than 80% of the strength of the wire rope. W. Engineering Construction Standard Full Text Information System
9.1.5.3 The lifting wire rope head of the SS type passenger and cargo lift shall be in the following form, and it is not allowed to use only U-shaped rope clamps: a. Metal or resin filled rope loop;
b. Sleeve hinged rope ring;
Sleeve hoop fastening rope ring;
d. Wedge anchor joint.
9.1.5.4 The number of broken wires within a length of 10 times the diameter of the wire rope shall not exceed 5% of the total number of wires. 9.2 Pulleys and electric sheaves
The ratio of the nominal diameter of the lifting pulley and traction sheave of SS-type cargo and passenger elevators to the nominal diameter of the wire rope shall not be less than 40. 9.2.2 The ratio of the nominal diameter of the lifting pulley and electric sheave of SS-type cargo elevators to the nominal diameter of the wire rope shall not be less than 30. The ratio of the nominal diameter of the counterweight pulley to the nominal diameter of the wire rope shall not be less than 30. 9.2.3
9.2.4 The nominal diameter of the balance pulley shall not be less than 0.6 times the nominal diameter of the lifting pulley. 9.2.5
The ratio of the nominal diameter of the speed limiter pulley to the nominal diameter of the wire rope shall not be less than 15. 9.2.6 The ratio of the nominal diameter of the floor door pulley to the nominal diameter of the wire rope shall not be less than 15. 9.2.7
All pulleys, pulley blocks and electric sheaves shall have measures to prevent the rope from slipping out of the groove. 9.2.8 The pulley rope groove is arc-shaped, and its arc radius shall be 5% to 7.5% larger than the nominal radius of the wire rope. The groove depth shall not be less than 1.5 times the diameter of the wire rope.
9.2.9 The allowable deflection angle of the wire rope entering and exiting the pulley shall not be greater than 4. 10 Transmission system
10.1 Safety protection of the transmission system and its ancillary equipment 10.1.1 The installation position and safety protection of the transmission system shall take personal safety into consideration. Its components shall have safety protection facilities. 10.1.2 The transmission system and its protective facilities shall be convenient for maintenance and inspection, and the relevant parts shall be protected from the intrusion of harmful substances such as rain, snow, mortar, concrete, dust, etc.
10.2 Electric traction transmission
10.2.1 There shall be sufficient friction between the hoisting wire rope and the rope groove of the electric sheave. When the cage is loaded with the rated load, the unit pressure between the wire rope and the rope groove of the electric sheave shall be within the allowable range. 10.2.2 When the cage or counterweight stops on the fully compressed buffer, the hoisting wire rope shall not be loose. When the cage is overloaded by 25% and runs up and down and brakes at the rated lifting speed, the wire rope shall not slip in the rope groove of the electric sheave. 10.3 Winch transmissionbzxz.net
10.3.1 Winch transmission is only used for hoists without counterweight. 10.3.2 If multi-layer winding is used, rope arrangement measures shall be provided. 10.3.3 When the cage stops on the fully compressed buffer, there should be at least 3 turns of wire rope left on the drum. 10.3.4 There should be sides at both ends of the drum, the height of which is higher than the outermost wire rope and shall not be less than 2 times the diameter of the wire rope. 10.3.5 The ratio of the nominal diameter of the driving drum of the SS-type passenger and cargo elevator to the nominal diameter of the wire rope shall not be less than 40. 10.3.6 The ratio of the nominal diameter of the driving drum of the SS-type cargo elevator to the nominal diameter of the wire rope shall not be less than 30. 10.3.7 The rope end of the wire rope of the SS-type passenger and cargo elevator on the driving drum shall be fixed with a wedge device, and the rope end of the wire rope of the SS-type cargo elevator on the driving drum can be fixed with a pressure plate. 10.4 Rack and pinion transmission
10.4.1 Gears and racks should be made of high-quality steel, and the tooth shape is formed by machining. 10.4.2 When designing and calculating, it should be assumed that only one tooth in each transmission system is involved in meshing, and the safety factor shall not be less than 5. The safety factor refers to the ratio of the ultimate tensile strength of the rack material to the actual stress generated in the rack tooth shape by the static load. The static load is the sum of the deadweight of the cage and the rated load.
10.4.3 The module of the gear and rack shall not be less than 7. W. Engineering Construction Standard Full-text Information System
10.4.4 The rack shall be firmly mounted on the guide frame, and the joints between adjacent racks shall comply with the provisions of Article 6.3.2.8 of GB10054. 10.4.5 The transmission pinion and safety device pinion shall be firmly mounted on the shaft, and the correct meshing position specified in the design of the transmission pinion and safety device pinion and the rack shall be maintained under any working conditions. In any case, the position deviation of each pinion and rack in the direction of tooth height should not be greater than 1/4 of the tooth height, and the position deviation of each pinion and rack in the direction of tooth width should not be greater than 1/3 of the tooth width. 10.4.6 Foreign objects should be prevented from entering between each gear and rack. 10.5 Brake
10.5.1 The transmission system should be equipped with a normally closed brake. When the cage is under the most unfavorable working conditions (rated load and running at rated lifting speed) and when the power is off during the overload test, the brake should stop the cage and protect stability. The brake can only be released when the motor resumes power. 10.5.2 When the elevator is equipped with a manual emergency operating mechanism, the brake should be able to be released manually. 10.5.3 Belt brakes are not allowed. 10.5.4 The brake should prevent the intrusion of lubricating oil and water. 10.5.5 If two independent transmission systems are used, each transmission system should have its own independent brake. 11 Guide and buffer device
11.1 Guide
11.1.1 The guide rail shall be able to withstand all stresses generated when the elevator is running up and down and braking at the rated lifting speed under the condition of eccentric load of rated load, as well as all additional stresses generated when the safety device is activated under this working condition. The eccentric load shall comply with the provisions of Article 3.10.1 of GB10056.
11.1.2 If the counterweight has an anti-fall safety device, the counterweight guide rail shall also be able to withstand the corresponding additional stress. 11.1.3 When calculating the stress generated by the safety device acting on the guide rail or rack, the sum of the cage's deadweight and the rated load shall be multiplied by the following safety factor.
a. Gradual safety device is 2;
b. Instantaneous safety device is 5.
11.1.4 The design and processing of the guide rail shall comply with the provisions of the corresponding safety device. 11.1.5 The guidance of the cage and the counterweight shall be correct and reliable. The cage shall be guided by rollers, and the counterweight shall be guided by rollers or guide shoes. 11.2 Buffering
11.2.1 The bottom of the cage and the counterweight shall be equipped with buffering devices in accordance with the provisions of Article 4.4.6 of GB10054. 11.2.2 When the cage stops on the fully compressed buffer, the free travel on the counterweight shall not be less than 0.5m. 11.2.3 When the rated lifting speed is less than or equal to 1.6m/s, an energy storage or energy consumption buffer shall be used; when the rated lifting speed is greater than 1.6m/s, an energy storage or energy consumption buffer with a buffer reset movement shall be used. 11.2.4 When the cage is loaded with the rated load and acts on the buffer at a lifting speed of 115%, its average acceleration shall not be greater than 1g (acceleration due to gravity), and the acceleration time above 2.5g shall not be greater than 0.04s. 12 Safety devices
12.1 General requirements
12.1.1 The cage should be equipped with safety devices, namely, rope break protection and speed limiter. When the suspension or support device fails to work during operation and the cage is out of control or overspeed, the safety device will function and stop the cage. 12.1.2 For elevators with counterweight, when the mass of the counterweight is greater than the mass of the cage, there should be a two-way overspeed or out-of-control mechanical speed limiter. 12.1.3 The operation method of the cage or counterweight drop test shall comply with the provisions of Article 3.17 of GB10056. 12.1.4 Safety devices activated by speed. When any non-structural failure of the elevator causes the cage to exceed the lifting speed, the safety device will function.
Safety devices activated by force (only for winch-driven cargo elevators). The safety device will function when the rope breaks at any position of the elevator due to non-structural failure.
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12.1.5 The safety device should still function during the process of connecting and dismantling the lift. 12.1.6 When the safety device is activated, the safety switch installed on the safety device should disconnect the motor circuit and apply the brake. 12.1.7 After the safety device is activated, the safety device is not allowed to be released or reset by the normal method of lifting the cage before the fault is eliminated. 12.1.8 The cage should be equipped with a safety hook to prevent the cage from detaching from the guide frame when an accident occurs. 12.2 Conditions for use of different types of safety devices 12.2.1 Progressive mechanical speed limiters can be used on elevators of any speed. 12.2.2 Instantaneous mechanical speed limiters can be used on SS-type elevators with a lifting speed not exceeding 0.85m/s. 12.2.3
SC-type elevators should use progressive mechanical speed limiters, and instantaneous mechanical speed limiters are not allowed. 12.2.4 When the cage is equipped with two or more sets of mechanical speed limiters, progressive ones should be used. 12.2.5 If the counterweight is equipped with a speed limiter and the lifting speed exceeds 1m/s, the mechanical speed limiter for the counterweight should be progressive. If it is less than 1m/s, the instantaneous speed limiter can be used.
12.2.6 The hoist driven by the winch should be equipped with a rope breaking safety device. 12.3 When the cage falls under the rated load condition, the braking requirements of the safety device shall comply with the provisions of Articles 4.4.1 and 4.4.2 of GB10054. 12.4 Speed limiter
12.4.1 The action speed of the speed limiter;
Rated lifting speed of the elevator? Speed limiter action speed <0.65m/s
s×(140%~160%)
0.65m/s<<1.2m/s
s?X(130%~140%)
v≥1.2m/s
The minimum action speed of the speed limiter is 0.85m/s, except when the lifting speed is very low and at rated load, the speed limiter action speed is lower.
12.4.2 The action speed of the speed limiter cannot be adjusted at will, and the speed limiter should be sealed with lead. 12.4.3 The speed limiter action speed value should be marked. 12.4.4 When the speed limiter is in action, the tension of the speed limiter wire rope should be at least 300N. When twice the force required for the clamping of the safety device is greater than 300N, the tension of the speed limiter wire rope should be equal to twice the clamping force of the safety device. 12.5 The safety device should prevent the malfunction due to the intrusion of foreign objects or the influence of climatic conditions. Any safety device shall not affect the normal operation of the elevator.
12.6 Safety switch
12.6.1 Limit switch
12.6.1.1 The elevator shall be equipped with upper and lower limit switches. The limit switch is of automatic reset type and is installed on the guide frame and the cage. 12.6.1.2 The installation position of the upper limit switch: a. When the lifting speed is less than or equal to 0.85m/s, the upper safety distance left after the cage triggers the limit switch shall not be less than 1.8m;
b. When the lifting speed is greater than 0.85m/s, the minimum upper safety distance shall be increased by 0.1m. 12.6.1.3 The installation position of the lower limit switch: Under normal working conditions, the lower limit touch plate of the cage first triggers the lower limit switch before triggering the lower limit switch. 12.6.2 Limit switch
12.6.2.1 All elevators shall be equipped with limit switches. When the cage runs beyond the limit switch and overtravel, the limit switch will cut off the main power supply and stop the cage. The limit switch is a non-automatic reset type. After the action, the cage can only be restarted by manual reset. The limit switch is installed on the guide frame or the cage.
12.6.2.2 Installation position of the upper and lower limit switches: a. Upper limit switch
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Under normal working conditions, the overtravel distance between the upper limit switch and the upper limit switch is: SS type elevator: 0.5m;
SC type elevator: 0.15m.
b. Lower limit switch
Under normal working conditions, the lower limit switch will be activated first before the cage hits the buffer. 12.6.3 The limit switch and limit switch of the traction drive elevator can also be triggered by the counterweight. 12.6.4 The limit switch and the limit switch shall be triggered and controlled separately. 12.6.5 Anti-loose rope switch and broken rope switch
When the number of counterweight wire ropes or lifting wire ropes of the elevator is 2 or more, a tension equalizing device shall be installed at one end of the wire rope group, and a non-self-resetting loose rope switch controlled by the relative elongation shall be installed. If the relative elongation of one of the wire ropes exceeds the allowable value or the rope breaks, the switch will cut off the control circuit and the cage will stop. The elevator using a single lifting wire rope or counterweight wire rope shall also be equipped with a broken rope switch. When the rope breaks, the switch will immediately cut off the control circuit and the brake will be engaged. 12.6.6 The safety switch of the trap door on the top of the cage shall comply with the provisions of Article 7.2.5. When personnel are performing height connection, disassembly or maintenance work on the top of the cage, the switch should be disconnected. 12.6.7 When the safety switch is part of the electromechanical interlock of the floor door (including the railing) or the cage door, the safety switch shall prevent the cage from starting when the doors are open.
12.7 In addition to the rope-breaking switch, the SS-type cargo elevator shall also be equipped with a manual safety device, which shall function after the cage reaches the working surface and before the personnel enter the cage, so that the cage is stabilized on the guide frame to ensure the safety of the personnel loading and unloading materials. 13 Attachment of the guide frame
13.1 The guide frame shall have an attachment connection point.
13.2 The distance between the moving parts of the elevator and the building and fixed construction equipment (such as the truss, etc.) shall not be less than 0.25m. 14 Electrical
14.1 Electrical design
14.1.1 Main circuit insulation switch
14.1.1.1 The elevator shall have a manual switch for isolating each phase of the main circuit, and the switch shall be located in a convenient place for operation. The switch handle should be a one-way opening contactor that can be locked in the "off" position. 14.1.1.2 The switch of the cage lighting should be independent of the main power switch and each should be clearly marked. 14.1.2 Cables and wires
14.1.2.1 Cable specifications Its capacity should be sufficient to pass the current during startup and normal operation. 14.1.2.2 The circuit should be equipped with a fuse or circuit breaker. The cables and wires should be protected from mechanical damage during the operation of the elevator. The cables should be free to drag without obstruction during the movement of the cage.
14.1.3 Protection against external interference
Electrical equipment should be protected from external interference and the influence of substances such as rain, snow, concrete, mortar, dust, etc. Drain holes should be provided where drainage is required.
14.1.4 Grounding
The metal casing of the hoist structure, motor and electrical equipment should be grounded with a resistance not exceeding 42.14.1.5 Control circuit and control box
14.1.5.1 When the grounding fails, the fuses in the main control circuit and other control circuits should be automatically cut off. 14.1.5.2 The control box should be firm, easy to maintain and equipped with a lock. 14.1.5.3 The control elements should be prevented from contacting other live parts or parts. 14.1.5.4 To prevent simultaneous operation, the upper and lower contactors should be electrically interlocked. W. Engineering Construction Standard Full Text Information System
14.1.5.5 The operating panel inside the cage or the operating box outside the cage should be easy to maintain and have a good view. 14.1.5.6 A control box should be installed on the top of the cage for maintenance or disassembly, and it should be allowed to run at a speed not higher than 0.65m/s under multiple speeds. When the control box on the top of the cage is used, other operating devices will not work. At this time, the safety device of the cage still plays a protective role. The control on the top of the cage should be operated by a constant pressure button or a bistable switch. A non-self-resetting emergency stop switch should be installed on the top of the cage, which can cut off the circuit and stop the operation of the cage at any time. 14.2 Marking
The purpose and direction of action of the control element should be indicated at the operating position. 14.3 Insulation
The insulation resistance of the motor and electrical components (except electronic components) to the ground should not be less than 0.5M2, and the insulation resistance of the electrical circuit to the ground should not be less than 1MQ.
14.4 Safety contacts of electrical circuits
14.4.1 The safety contacts of electrical circuits should be unidirectional mechanical interruption type or twist-off type. The insulation voltage of the safety contacts is 250V when the shell protection level is above IP4X; when the shell protection level is less than IP4X, it is 500V. 14.4.2 In the case of multiple contacts, the distance between the contacts shall not be less than 2mm. 14.4.3 The wear of the contacts and the conductor materials shall not cause the contacts to short-circuit. 14.5 Protection device to prevent electrical faults
When there is an electrical fault such as voltage drop, no voltage, short circuit or disconnection of electrical components, no or incomplete attraction of contactors or circuit breakers, or inability to separate or incomplete separation, the elevator shall stop running. It shall be repaired by professionals, and the elevator can only be put into operation after all the repairs are completed. 14.6 Electrical safety device
14.6.1 No electrical equipment should be connected in parallel with the electrical safety device, and internal or external induced currents should not affect the normal operation of the electrical safety device.
14.6.2 No error signals should appear during the manufacture and installation of electrical safety devices. 15 Precautions
Precautions, operating instructions and safety markings should be clear, easy to understand and clearly marked in conspicuous positions on relevant components. 16 Installation and erection
When connecting, disassembling and repairing the lift, the operator should follow the requirements of the instruction manual and wear a safety belt when necessary. 17 Repair and maintenance
Regular maintenance of the lift and its accessories should be carried out by maintenance personnel in accordance with the requirements of the maintenance instructions provided by the manufacturer. Additional notes:
This standard is under the jurisdiction of the Beijing Comprehensive Research Institute of Construction Machinery of the Ministry of Construction. This standard was drafted by the Institute of Building Mechanization of the China Academy of Building Research and the Institute of Labor Protection of Liaoning Province. This standard was entrusted to the Changsha Research Institute of Construction Machinery for interpretation. W.bzsoso.coI
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