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People's Republic of China Construction Industry Standard JG/T5101—1998
Armaerial work platform
Issued on 1998-06-23
Implemented on 1998-12-01
Issued by the Ministry of Construction of the People's Republic of China
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JG/T5101—1998
This standard refers to the contents of the definition, structural safety factor and whole machine stability test of the American standard ANSIA92.5—1980 "Boom-type aerial work platform". This standard also refers to the contents of the lifting mechanism assembly and control of the work platform of the American standard ANSIA92.6—1979 "Self-propelled aerial work platform". With the increasing use of aerial work platforms, their structural types are also increasing year by year. In order to meet the needs of development, we have formulated five product standards, namely "Sleeve Cylinder Aerial Work Platform", "Boom Aerial Work Platform", "Scissor Aerial Work Platform", "Gun Column Aerial Work Platform" and "Truss Aerial Work Platform", based on the industry standard J8291 "Aerial Work Platform", according to the different structural types of their products, to guide the design, manufacture and use of the products. This standard clearly stipulates the leveling mechanism and leveling accuracy of the boom-type aerial work platform. Due to the large operating range of the boom-type aerial work platform, higher requirements are put forward for its stability. In addition to general stability tests, rearward stability and tire burst tests are also required.
This standard will replace J82-91 from the date of implementation. Appendix A of this standard is the appendix of the standard.
The Standard and Quota Research Institute of the Ministry of Construction proposed that this standard shall be managed by the Beijing Construction Machinery Comprehensive Research Institute, the technical management unit of mechanical equipment and vehicle standards of the Ministry of Construction.
The drafting units of this standard: China Academy of Building Research Building Mechanization Research Institute, Shanghai Zhongli Elevator Factory.
The main drafters of this standard: Zhao Hongxue, Wang Zhenfeng, Liu Zijin, Jing Qizuo, Liu Weisheng This standard is entrusted to China Academy of Building Research Building Mechanization Research Institute for interpretation.
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People's Republic of China Construction Industry Standard Arm-type Aerial Work Platform JG/T5101—1998 Arm Aerial Work Platform
This standard specifies the classification, technical requirements, test methods, inspection rules, marking, packaging and storage of arm-type aerial work platforms (hereinafter referred to as work platforms). This standard applies to arm-type aerial work platforms. 2
Cited Standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard was published, the versions shown were all valid. All standards are subject to revision. Parties using this standard should explore the possibility of using the latest version of the following standards. GB1497-85 Basic standard for low-voltage electrical appliances
GB3323--87
Radiography and quality classification of steel fusion welded butt joints GB3766-83 General technical conditions for hydraulic systems GB/T5117-1995 Carbon steel welding rods
GB/T5118-1995 Low alloy steel welding rods
GB5972-86 Practical specification for inspection and scrapping of steel wire ropes for cranes GB14761.5-93 Rapid pollutants from gasoline vehicles Emission standard GB14761.6-93 Free acceleration smoke emission standard for diesel vehicles JG/T5050-94 General rules for reliability assessment of construction machinery and equipment Approved by the Ministry of Construction of the People's Republic of China on June 23, 1998 Engineering Construction Standard Full Text Information System
Implementation on December 1, 1998
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JG5099-1998 Safety rules for aerial work machinery JG/T5100-1998 Scissor-type aerial work platform 3 Definitions
This standard adopts the following definitions.
3.1 Boom-type aerial work platform aerial work platformfom The lifting mechanism is an aerial work platform with one or more booms (including retractable booms) hinged into a boom structure.
Fixed boom-type aerial work platform stationaryarmaerialworkplatform A boom-type aerial work platform with a fixed chassis position. Mobile arm aerial work platform
mobileamaenalworkplatom
An arm aerial work platform that is not self-powered and can be easily moved in the workplace with the help of external force.
3.4 Self-propelled arm aerial work platform
self-propelled armaerialworkplatform
An arm aerial work platform that uses its own power to travel in the workplace or between workplaces
Working radius
The sum of the distance from the support center or the slewing support center to the outer edge of the platform and the distance (0.6m) that the operator can reach for safe work. 3.6 Maximum working radius maximum working radius
Slewing speed
The average speed of the work platform during the slewing process The following definitions shall comply with the provisions of JG/T5100-1998. Aerial work platform, outrigger, platform, rotating platform, insulated platform, guardrail, enclosure, sinking, lifting speed, free fall, stability, maximum platform height, maximum operating height, rated load.
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4 Classification
4.1 Type
Working platforms are divided into the following types according to their walking power form: a) fixed;
b) mobile,
c) self-propelled.
4.2 Model
4.2.1 The model of the work platform consists of the group type code, characteristic code, main parameter code and updated variant code. The model description is as follows: Update variant code: Indicated by the Chinese pinyin (uppercase printed body) Main parameter code: Maximum height of the flat,
Characteristic code: G--Fixed
Y--Mobile
Z--Self-propelled
Group code: GTB--Wall-mounted aerial work platform 4.2.2
Marking example: | |tt||) The maximum height of the platform is 8m, mobile boom aerial work platform: boom aerial work platform GTBY8JG/T5101b) The maximum height of the platform is 8m, the first variant of the fixed boom aerial work platform:
Boom aerial work platform
Main parameters and series
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The main parameter of the work platform is the maximum height of the platform. The main parameter series is shown in Table 1. Table 1 Main parameter series
Maximum height of platform
5 Technical requirements
General requirements
3, 4, 5, 6, 8, 10, 12, 14, 16, 18, 20, 25, 30m
5.1.1 The working platform shall be manufactured according to the product drawings and technical documents approved by the prescribed procedures. 5.1.2 All standard parts, purchased parts and outsourced parts shall have certificates of conformity. When necessary, spot checks shall be carried out and assembly shall be carried out only after they are confirmed to be qualified.
5.1.3 The raw materials used shall be used only with a material guarantee. If substitute materials are used, their main technical performance shall not be lower than the original design requirements. 5.1.4 All parts and components shall be inspected and assembled only after they are confirmed to be qualified. The main parts and components that have passed the inspection shall be marked
The welding rods used for manual welding shall comply with the provisions of GB/T5117 and GB/T5118. The friction parts of all moving parts shall be equipped with devices to ensure lubrication. The connection of parts and components should be reliable and not loose. The lines and pipelines should be arranged neatly, firm and reliable. The quality of the main welds should meet the requirements of the second level of GB3323. The outside of the welds is not allowed to have defects such as burn-through, undercut, slag inclusion, and weld nodules. No cracks are allowed in the longitudinal, transverse and parent metal of the welds. Continuous welds cannot be interrupted. The scale-like corrugation should be formed evenly, and the maximum height difference should not be greater than 2mm.
Working conditions requirements
Working conditions requirements should meet the requirements of 5.2 in JG/T5100-1998. Safety factor
5.3.1 The safety factor shall comply with the provisions of 5.3 of JG/T5100-1998. 5.3.2 The fixed connection of the wire rope end shall meet the following safety requirements: a) When connected with rope clamps, it shall meet the requirements of Table 2, and the connection strength4 shall not be less than 85% of the breaking tension of the wire rope; Table 2 Safety requirements when connected with rope clamps
Wire rope diameter, mm
Number of rope clamps
Note: The rope clamp pressure plate shall be on the long end of the wire rope, and the rope clamp spacing shall not be less than 6 times the wire rope diameter. b) When connecting by knotting, the knot length shall not be less than 15 times the diameter of the steel wire rope, and the connection strength shall not be less than 75% of the breaking tension of the steel wire rope.
d) When connecting by the conical sleeve casting method, the connection strength shall reach 90% of the breaking tension of the steel wire rope;
e) When connecting by the aluminum alloy sleeve compression method, the aluminum alloy sleeve and the steel wire rope shall be tightly and firmly fitted by reliable process methods, and the connection strength shall reach 90% of the breaking tension of the steel wire rope.
The scrapping of the steel wire rope shall comply with the relevant provisions of GB5972. Electrical system
The electrical system shall comply with the provisions of 5.4 of JG/T5100-1998. Platform
The platform shall comply with the provisions of 5.5 of JG/T5100-1998. Lifting mechanism
If the lifting mechanism is a telescopic arm, it shall meet the following requirements: a) The telescopic sequence between the arms shall comply with the provisions of the instructions. b) The pulley diameter used for the telescopic mechanism shall not be less than 16 times the diameter of the wire rope. Slewing mechanismbZxz.net
5.7.1 A device should be set to prevent relative rotation between the vehicle and the vehicle during towing. 5.7.2 The slewing mechanism cannot rotate on its own in the working state. 5.8 Hydraulic system
The hydraulic system shall comply with the provisions of 5.7 in JG/T5100-1998. 5
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5.9 Working performance
5.9.1 Each mechanism shall ensure smooth and accurate operation during operation, and shall not produce creeping, vibration, impact and abnormal increase in driving power. The micro-motion performance of lifting, lowering and slewing shall be good.
5.9.2 The mechanism must have the performance of the platform staying in the air reliably. 5.9.3 The ear noise of the internal combustion engine driven work platform should not be greater than 86dB(A), and the environmental noise should not be greater than 82dB(A).
The ear noise of the electric driven work platform should not be greater than 80dB(A), and the environmental noise should not be greater than 76dB(A).
The emission of the internal combustion engine should comply with the provisions of GB14761.5 or GB14761.6. 5.9.4 The transmission system should be stable, and there should be no abnormal noise caused by vibration and oil system cavitation.
5.9.5 The work platform is placed on a solid horizontal surface. After any position within 300mm of the periphery of the platform is subjected to the concentrated rated load and lifted and lowered 10 times, there should be no permanent deformation or cracks in the components.
The work platform is placed on a solid horizontal surface. After the platform hook is subjected to 1.33 times the rated load and lifted and lowered 30 times, there should be no permanent deformation or cracks in the components. 5.9.7 When unloaded, the maximum operating range error shall not be greater than 2% of its nominal value: the platform height at the maximum operating range shall not be lower than its nominal value, and the maximum platform height error and the initial platform height error shall not be greater than 1% of its nominal value. 5.9.8 The longitudinal and transverse span errors of the outriggers shall not be greater than 1% of the nominal value. 5.9, 9 The width, length and height errors of the overall towing state shall not be greater than 1% of the nominal value.
min.
The lifting and lowering speed shall not be greater than 0.5m/s; the slewing speed shall not be greater than 2r/5.9.11
1 Under the action of rated load, within 15 minutes after lifting or lowering braking at any position, the retraction amount of the piston rod of each oil cylinder shall not be greater than 2mm, and the platform sinking amount shall not exceed 1% of the maximum height of the working platform.
5.9.12 Each control device and component shall work reliably and accurately. 6
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5.9.13 The position error of the center of gravity of the whole machine in the towing state shall not be greater than 0.5% of the nominal value. 5.10 Leveling mechanism
5.10.1 The leveling mechanism must ensure that the platform is in a horizontal state at any working position. The angle between the bottom of the platform and the horizontal plane should not be greater than 1.5°. The leveling process must be smooth and reliable, and no vibration, impact, slippage, etc. should occur. 5.10.2 For the working platform leveled by wire rope, the diameter of the pulley should not be less than 12 times the diameter of the wire rope, and the pulley should have a device to prevent the wire rope from slipping out of the groove. 5.10.3 For the working platform leveled by oil cylinder, a device should be provided to prevent the oil pipe from rupturing and causing the platform to tip over.
5.11 Travel system
After the power of the travel mechanism of the self-propelled work platform is cut off, it should be able to be towed and moved. The self-propelled work platform should be equipped with a running brake and a parking brake system. 5.11.2
5.11.3 The braking performance of the braking system must ensure that the transmission machinery is in the neutral position, and when driving on an asphalt or cement road surface with a slope of not more than 6°, both forward and reverse can be reliably braked. The braking force of the foot brake shall not be less than 700N, and the braking force of the hand brake shall not be less than 40bN.
5.11.4 The steering system and gear shifting operation should be flexible. 5.11.5
state.
The brakes of the parking brake system must be able to maintain the brake after the braking action. 5.12 Outriggers and stabilizers
Outriggers and stabilizers shall comply with the provisions of 5.10 in JG/T5100-1998. 5.13 Control system
The control system shall comply with the provisions of 5.11 in JG/T5100-1998. 5.14|Power system
The power system shall comply with the provisions of 5.12 in JG/T5100-1998. 5.15 Structural scrapping
Structural scrapping shall comply with the provisions of 4.4 in JG5099-1998. 5.16 Safety protection device
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5.16.1 Safety protection device shall comply with the relevant provisions of JG5099, 5.16.2 The rotating platform shall be equipped with a locking device and cannot rotate automatically at any position. 5.17 Stability requirements
5.17.1 Stability on the horizontal plane
The working platform shall be placed on a solid horizontal ground, bear 1.5 times the rated load (static load), and its center of gravity shall be placed within 300mm of the perimeter of the platform. The whole machine shall be stable in the worst stability state.
5.17.2 Stability on the inclined plane
The working platform is placed on an inclined plane with an angle of 3° to the horizontal plane, and its stability should meet the following conditions:
a) The whole machine is in the most prone to tipping state. The platform should be stable when it is subjected to 1.33 times the rated load and its center of gravity is placed 300mm inside the perimeter of the platform. b) The whole machine is in the worst working condition in terms of backward stability. The most unfavorable state at this time may be no-load or rated load. The upper edge of the platform should be stable when it is subjected to a horizontal force of 680N or 15% of the rated load in the tipping direction (the larger of the two). ) The whole machine is in the most prone to tipping state. The most unfavorable state at this time may be no-load or rated load. It should be stable when there is a sudden tire burst. 5.17.3 When outriggers or other stabilizing devices must be used for V work, this should be stated. 5.18 Insulation requirements
The insulation of the insulating platform should comply with the provisions of Chapter 11 of JG5099-1998. 5.19 Reliability requirements
The reliability test time of the working platform is 200.h5.19J1
The average trouble-free working time of the working platform should comply with the provisions of Table 3. Table 3 Average trouble-free working time of the working platform Maximum height of the platform, m
Fixed
Mobile
Self-propelled
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5.19.2 The reliability of the working platform should not be lower than the provisions of Table 4. Table 4 Reliability of working platform
Maximum height of platform, m
Reliability
Appearance quality requirements of the whole machine
Appearance quality requirements of the whole machine shall comply with the provisions of JG/T5100-1998517
Test method
Test conditions
Test conditions shall comply with the provisions of 6.1 of JG/T5100-1998. 6.2 Noise measurement
Noise measurement shall be in accordance with 6.2. 6.3
Emission measurement
Non-emission measurement shall be carried out in accordance with the provisions of 6.3 in JG/T5100-1998. Measurement of the structural parameters of the whole machine
The working platform is in an unloaded state, and the items specified in Table A1 of Appendix A (Appendix to the standard) are measured. The average value is taken after three measurements and recorded in Table A1. 6.5 Quality parameter measurement
Quality parameter measurement is carried out in accordance with the provisions of 6.5 in JG/T51001998. 6.6
No-load test
The working platform is in an unloaded state, and performs lifting, lowering, rotation, retracting and extending outriggers, walking and other actions. Each action is carried out within the maximum operating range for five parameter measurements according to the items specified in Table A2. Each item is carried out three times, and the average value is taken and the measurement results are recorded in Table A2.
6.7 Rated load test
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Level the outriggers, lift the platform under the rated load, rotate left and right within the maximum range at the maximum height and maximum amplitude, and then lower it to the original position. During the lifting, lowering and rotating process, normal start and brake are performed more than twice. Measure the items specified in Table A3, each item is measured three times, and the average value is recorded in Table A3.
Measurement of load-bearing capacity
The measurement of load-bearing capacity is carried out in accordance with the provisions of 6.9 of JG/T5100-1998. 6.9
Stability test
6.9.1 Test conditions: the outriggers are extended and leveled. 6.9.2 Test equipment and instruments: angle meter, pressure sensor, strain gauge, steel tape measure, safety protection rope, etc.
6.9.3 Test items
6.9.31 Carry out the stability parts test according to the requirements of 5.17, and observe whether there is any instability phenomenon. The platform should be equipped with a protective rope during the test.
6.9.3.2 During the test, it is allowed to adjust the opening pressure of the hydraulic system safety relief valve, but it should be readjusted to the specified value after the test. 6.9.3.3 The overload test should be loaded gradually. During the test, as long as any abnormal phenomenon occurs, the test should be terminated immediately and a thorough inspection should be carried out. 6.10 Structural stress measurement
Test instrument: strain gauge
The working platform should be inspected and adjusted before the test, and tested under the rated load to release the residual stress that may be generated during the manufacturing process. Prepare the test outline according to the calculation book and structural force analysis, draw the measurement point distribution map, and the test conditions should comply with the provisions of Table 5. 10
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