JB 8716-1998 Safety regulations for truck cranes and tire cranes

JB 8716-1998 This standard is a revision of ZB J80 002-86. This standard specifies the safety technical requirements for the design, manufacture, inspection, scrapping, use and management of truck cranes and tire cranes. This standard applies to truck cranes and tire cranes. JB 8716-1998 Safety regulations for truck cranes and tire cranes JB8716-1998 Standard download decompression password: www.bzxz.net

JB 8716--1998
This standard is a revision of ZBJ80002-86 "Safety Regulations for Truck Cranes and Tire Cranes". In this revision, the content of the whole machine performance and operation safety and reliability is added, and the content of the structure and construction, hydraulic system, electrical system, operating system and safety protection device, as well as the content of the lifting mechanism, hook, brake and wire rope, pulley and other parts are supplemented and revised.
This standard will replace ZBJ80002--86 from the date of implementation. This standard was proposed by the Changsha Construction Machinery Research Institute of the Ministry of Construction and is under the jurisdiction of the drafting unit of this standard: Changsha Construction Machinery Research Institute of the Ministry of Construction. The main drafters of this standard are You Xiaoping, Cao Zhongmei and Huang Yihong. This standard was first issued on November 4, 1986. This standard is entrusted to the Changsha Construction Machinery Research Institute of the Ministry of Construction for interpretation. 927
1 Scope
Machinery Industry Standard of the People's Republic of China
Truck crane and wheel crane
Safety regulations
Truck crane and wheel crane-Safety codeJB8716-1998
Replaces ZBJ80002-86
This standard specifies the safety technical requirements for the design, manufacture, inspection, scrapping, use and management of truck cranes and wheel cranes.
This standard applies to truck cranes and wheel cranes (hereinafter referred to as cranes). 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB700—88 Ordinary carbon structural steel
GB1591—88 Technical conditions for low alloy structural steelGB3766--83 General technical conditions for hydraulic systemsGB 3811---83
Design specifications for cranes
Provisions for the number, position and color of external lighting and signal devices for vehicles and trailersGB 4785—84
GB5972-86 Practical specifications for inspection and scrapping of steel wire ropes for lifting machineryGB/T5973—86 Wedge joints for steel wire ropesGB/T5975—86 Pressure plates for steel wire ropes
GB/T5976—86 Wire rope clamps
GB6067—85 Safety regulations for lifting machinery
GB 6068. 1-85
General requirements for test specifications for truck cranes and tire cranes
GB6068.3—85Test specifications for truck cranes and tire cranesDetermination of stability
GB7258—1997Technical conditions for motor vehicle operation safetyGB7950—87General technical conditions for lifting moment limiters of jib cranesGB10051.188Lifting hooks, mechanical properties, lifting weight, stress and materialsGB 11352—89
Technical conditions for cast carbon steel for general engineering
JB2299—78 Paint colors and safety signs for mining and engineering lifting and transportation machinery productsJB3774.1—84 Noise limits for engineering machineryJB4031--85 Signs for truck cranes and tire cranesZBE3900387 Selection and replacement of hydraulic oil for truck cranes and tire cranesZBJ80003—87 Technical requirements for truck cranes and tire cranesApproved by the Ministry of Machinery Industry of the People's Republic of China on March 19, 1998928
Implemented on July 1, 1998
3 Complete machine
JB 87161998
3.1 The operating conditions of the crane shall comply with the provisions of ZBJ80003 and GB6068.1. 3.2 The crane shall have a rated lifting capacity table, a lifting height curve sign and other safety signs. They must be fixed in a position that is easy for the operator to see. Its content and format should refer to the provisions of JB4031. At the same time, the words "No one is allowed to stand under the crane arm" should be written in a striking font at the appropriate position of the main arm.
3.3 For telescopic boom cranes that are not equipped with torque limiters, when the arm length is the middle value of the given length on the rated lifting capacity table, the smaller value of the rated lifting capacity of the adjacent arm length is allowed under each amplitude. 3.4 The product label should be fixed in a conspicuous position when the crane leaves the factory. 3.5 The random technical documents provided when the crane leaves the factory should comply with the provisions of 2.19 in ZBJ80003-~87. 3.6 Cranes that fail the factory inspection are not allowed to leave the factory for use. 3.7 When the crane is tested, safety protection measures should be set for possible dangerous working conditions to ensure the safety of personnel and the whole machine. 3.8 The stability of the crane should comply with the provisions of GB6068.3. When the crane is tested for stability, except for special requirements in the contract, the test load shall be determined by the following formula:
a) When supported by outriggers 1.25P: +0.1F
b) When supported by wheels (tire) (static) 1.33P; +0.1Fc) When traveling with load (the speed of traveling with load is less than or equal to 14km/h) 1.33P; +0.1Fd) When traveling with load (the speed of traveling with load is greater than 14km/h) 1.5Pi + 0.1F Where: Pi - rated lifting capacity:
F The weight of the boom mass G converted to the head of the boom or the head of the jib. 3.9 When using outriggers for lifting operations, the outriggers should be firmly supported on a solid and horizontal ground, and the slewing bearing plane installed on the frame should be horizontal with an inclination of no more than 0.5%.
3.10 The paint color and warning pattern of the crane shall comply with the provisions of JB2299. 4 Structure and Construction
4.1 Materials
4.1.1 The main load-bearing structural parts of the crane metal structure generally adopt the ordinary carbon structural steel Q235-BC, D specified in GB700, the high-quality carbon steel specified in GB699 and the low-alloy structural steel 16Mn, 15MnTi specified in GB1591. The main load-bearing structural parts of the crane should be killed steel. The impact energy of the steel at the corresponding use temperature shall not be less than 27N·m for Q235-B, C, ID steel, and not less than 40N·m for other steels, and shall meet the requirements of 180° cold bending test at room temperature. The Q235-D steel, 20 steel, etc. used in the main load-bearing structural parts of the crane working in areas below -20°C shall have a qualified guarantee of -20°C impact toughness; for 16Mn, 15MnTi steel, etc., they shall have a qualified guarantee of -40°C impact toughness. If necessary, they shall have a qualified guarantee of cold bending test. Steel castings shall be made of steel grades that comply with the provisions of GB11352. 4.1.2 The raw materials used shall be subject to the factory inspection system. 4.2 Connection
4.2.1 Welding connection
The welding requirements of the main welds of the main load-bearing structural parts such as the base frame, legs, turntable and crane arm, as well as the main welds of the general load-bearing structural parts shall comply with the provisions of 1.2 in GB6067-85. The quality of the welds shall meet the design requirements. 4.2.2 Rivet connection and bolt connection
4.2.2.1 Rivet connection and bolt connection shall comply with the provisions of 3.4.2.2 in GB3811--83. 4.2.2.2 For structures connected by high-strength bolts, the connection surface shall be clean of dust, paint, oil stains and rust. A torque wrench or special wrench must be used to tighten according to the assembly technical requirements. 4.3 Cab and control room
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4.3.1 Cab and control room must comply with the provisions of 4.12 of ZBJ80003—87 and 1.4 of GB6067—85. 4.3.2 The top of the cab and control room can withstand a load of 1000N distributed on an area of ​​(30×30) cm2 without permanent deformation.
4.3.3 The control room should be equipped with a sunshade and a wiper. 4.4 Scrap of metal structures
4.4.1 Scrap of metal structures should comply with the provisions of 1.10 of GB6067—85. 4.4.2 For the components of the boom and underframe that have been replaced or repaired after instability or damage, the stress of the components shall not be higher than the original calculated stress, otherwise they shall be scrapped.
5 Mechanism and Components
5.1 General Requirements
5.1.1 Boom
For telescopic booms, the maximum average clearance of each boom section on one side shall not be greater than 2.5mm, otherwise the slider needs to be adjusted. 5.1.2 Outriggers
5.1.2.1 When the crane is in driving state, the outriggers should be retracted and securely fixed. 5.1.2.2 When operating the outriggers, the operator should be able to see each outrigger at the operating position. Otherwise, a signal person should be available to help. 5.1.2.3 During lifting operations, the support plate should be securely connected to the outriggers, and the outriggers should reliably support the crane. 5.1.3 Protection of moving parts
All exposed moving parts that may cause danger under normal working conditions (such as open gears, chains, sprockets, pins protruding from the transmission shaft, bolts, couplings and reciprocating parts, etc.) should be equipped with protective devices (protective covers or protective railings). 5.1.4 The brake should be equipped with rain protection devices. 5.1.5 The exhaust pipe of the engine should be equipped with a muffler. The exhaust pipe should be located away from the operator. The noise limit value when the crane is traveling should comply with the provisions of GB7258, and the noise limit value during lifting operation should comply with the provisions of JB3774.1. 5.1.6 The capacity of the fuel tank should ensure that the crane can operate normally for at least 8 hours, and a device for measuring the amount of oil in the fuel tank should be installed. 5.2 Hook
5.2.1 The design calculation and selection of the hook should comply with the provisions of GB10051.1. 5.2.2 The hook shall comply with the provisions of 2.1.1, 2.1.2, 2.1.3, 2.1.4, 2.1.6 and 2.1.7 of GB6067-85. 5.2.3 Repair welding is prohibited for the hook. The hook shall be scrapped if any of the following conditions are met: a) Cracks and breaks are observed on the surface with a 20x magnifying glass; b) Dangerous sections such as the hook tail and threaded part and the hook reinforcement are permanently deformed; c) The wear of the section at the hanging rope exceeds 5% of the original height; d) The opening is increased by 10% compared with the original size.
5.3 Wire rope
5.3.1 The selection of wire rope and the determination of safety factor shall comply with the provisions of 4.4.2.1, 4.4.2.2 of GB3811-83 and 4.10.1, 4.10.2 of ZBJ80003--87.
5.3.2 The type, specification and length of the wire rope should be clearly stated in the instruction manual. 5.3.3 The installation, inspection and scrapping of the wire rope should comply with the provisions of GB5972. 5.3.4 The fixation of the wire rope end should meet the following requirements: a) When fixed with a wire rope clamp, it should comply with the provisions of GB/T5976, and the fixing strength should not be less than 85% of the breaking tension of the wire rope; b) When fixed with braiding, the braiding length should not be less than 20 times the diameter of the wire rope and not less than 300mm, and the fixing strength should not be less than 75% of the breaking tension of the wire rope;
c) When fixed with a wedge and a wedge sleeve, the wedge and the wedge sleeve should comply with the provisions of GB/T5973, and the fixing strength should not be less than 75% of the breaking tension of the wire rope. 75% of the breaking force of the rope;
JB8716--1998
d) When the conical sleeve casting method is used for fixing, the fixing strength should reach the breaking force of the wire rope; e) When the aluminum alloy sleeve and steel sleeve pressing method are used for fixing, the aluminum alloy sleeve and steel sleeve should be tightly and firmly fitted with the wire rope by reliable process methods, and the fixing strength should reach 90% of the breaking force of the wire rope; f) When the pressure plate is used for fixing, the pressure plate should comply with the provisions of GB/T5975, and the fixing strength should reach the breaking force of the wire rope. 5.3.5 The wire ropes should be arranged neatly in order on the drum. 5.3.6 The lifting wire rope should be a non-rotating and non-loose wire rope. 5.3.7 Maintenance of wire ropes
a) In addition to complying with the provisions of B6067, wire ropes should also be maintained in accordance with the following provisions: Wire ropes should be lubricated at least twice a month when in use; before lubrication, the wire ropes should be wiped clean with a cloth and then lubricated with oil or grease: the types of lubricating oil and grease applied should comply with the factory instructions of the wire rope factory.
b) Before cutting the wire rope, the wire rope should be tied on both sides of the cut to prevent the rope strands from spreading. 5.3.8 Inspection of wire ropes
The wire ropes of the hoisting mechanism should be inspected at least once a week, and the other running wire ropes should be inspected at least once a month. The wire rope condition report should be filled in in detail, dated and signed, and put into the equipment file for reference. When the crane is parked or stored and all wire ropes are idle for one month or more, a thorough inspection should be carried out before re-use.
5.4 Drums and pulleys
5.4.1 The calculation of the minimum winding diameter of drums and pulleys shall comply with the provisions of 4.4.2.3 of GB3811--38. 5.4.2 The lifting drum shall have sufficient rope capacity. When the hook is at the lowest position specified by the manufacturer, at least three turns of wire rope shall be retained on the drum, and corresponding protective measures shall be taken. The height of both sides of the drum shall exceed 1.5 times the nominal diameter of the outermost wire rope during operation. 5.4.3 Discarding of drums and pulleys
Drums and pulleys shall be discarded if any of the following conditions are met: a) cracks or broken rims;
b) wear of the drum groove bottom exceeds 25% of the wire rope diameter; c) wear of the welded pulley exceeds 20% of the rim plate thickness; d) wear of the other pulley groove bottom exceeds 25% of the wire rope diameter. 5.5 Lifting mechanism
5.5.1 Each independent drive device of the lifting mechanism shall be equipped with at least one supporting brake. The supporting brake shall be of the normally closed type and must be able to support the rated weight permanently. The brake must be installed on the load shaft rigidly connected to the transmission mechanism. 5.5.2 The oil circuit of the hydraulic lifting mechanism must be equipped with a balancing valve adapted to its flow rate. 5.5.3 For lifting mechanisms that require gravity descent, reliable and operable brakes shall be provided. 5.6 Luffing mechanism
5.6.1 The luffing mechanism shall be able to reliably support the boom and enable the boom to be smoothly lowered to the specified amplitude under the control of the operator. 5.6.2 The raising and lowering of the boom must be accomplished by the power system. 5.6.3 In the mechanism that raises and lowers the boom with a wire rope, a normally closed brake shall be provided. 5.6.4 For the mechanism that uses hydraulic cylinder to raise and lower the crane buttocks, the center of the luffing oil circuit must be equipped with a balancing valve that is compatible with its flow rate. 5.7 The telescopic mechanism of the crane arm
The telescopic hydraulic cylinder must be equipped with a balancing valve that is compatible with its flow rate. 5.8 Slewing bearing and slewing mechanismWww.bzxZ.net
Slewing bearing and slewing mechanism shall comply with the provisions of 4.9 in ZBJ80003--87. 5.9 Use and inspection of brakes
5.9.1 The selection of brakes for each mechanism shall comply with the provisions of GB3811. 5.9.2 Before each shift, it is necessary to check whether the brakes are operating normally and whether there is any jamming phenomenon, and then lift the heavy objects 150~931
JB8716-1998
200mm from the ground, keep it for 10 minutes, check the brakes, and confirm that they are normal before lifting. 5.9.3 Brake parts shall be scrapped if any of the following conditions are found: a) cracks; b) wear of the friction lining of the brake pad reaches 50% of the original pad thickness; c) wear of the brake wheel surface reaches 1.5-2mm (the larger value is taken for wheel diameters above 300mm, otherwise the smaller value is taken); d) plastic deformation of the spring occurs; e) the idle stroke of the electromagnet lever system exceeds 10% of its rated stroke; f) the initial stroke of the electromagnet core exceeds half of the rated stroke; g) the contact area between the friction lining of the brake pad and the brake wheel is less than 70% of its theoretical contact area; h) the brake pad is damaged and ineffective; i) the wear of the friction lining on the brake pad is too large to make the disc brake ineffective. 5.10 Travel and Braking 5.10.1 The travel of the crane shall comply with the provisions of ZBJ80003. 5.10.2 On concrete or asphalt pavement, when the maximum travel speed of the crane exceeds 30km/h, brake at 30km/h; when the maximum travel speed of the crane is less than 30km/h, brake at the maximum travel speed of the crane. The braking distance should not exceed the specified value of the design.
5.10.3 The parking brake of the crane must enable the crane to park reliably on the specified maximum slope. 5.10.4 The travel system and service brake of the crane shall comply with the provisions of GB7258. 6 Hydraulic system
The hydraulic system shall comply with the provisions of GB3766, GB6067 and ZBJ80003. 6.1 The hydraulic system shall have a safety device to prevent overload. The set pressure of the safety relief valve shall not be greater than 110% of the rated working pressure of the system, and shall not be greater than the rated pressure of the hydraulic pump. 6.2 The connection between the balance valve and the hydraulic lock and the actuator must be a rigid connection. 6.3 The maximum working oil temperature in the hydraulic oil tank shall not exceed 80C. 6.4 When hoses are used to connect parts with relative motion, the length of the hoses should be shortened as much as possible, and friction and collision should be avoided. Exposed hoses that are vulnerable to damage should be covered with protective covers. Check each connection link in the system regularly. 6.5 Reliable filters should be used. The viscosity, acid value, water content, and solid particle contamination of the oil in the oil tank must be checked regularly; if they do not meet the requirements, they should be replaced in time. The requirements should comply with the provisions of ZBE39003. Replace the hydraulic oil with the corresponding viscosity according to the season of use. It is strictly forbidden to use mixed oil.
6.6 When accumulators are used in the system, safety warning signs must be marked on the accumulators or in obvious places near the accumulators. The inflation volume and installation of the accumulators must comply with the manufacturer's regulations. 7 Safety protection devices
7.1 Cranes with a lifting capacity of 16t and above should be equipped with torque limiters, and their requirements should comply with the provisions of GB7950. 7.2 Cranes with a lifting capacity less than 16t should be equipped with a lifting capacity indicator, and its requirements should comply with the provisions of 7.4 in ZBJ80003-87. 7.3 Cranes should be equipped with a lifting height limiter, which should be able to reliably alarm and stop the lifting of the hook, and can only be operated to lower.
7.4 Cranes that use wire ropes for luffing should be equipped with amplitude limit devices and devices to prevent the boom from tilting backward. 7.5 Cranes should be equipped with amplitude indicators (or elevation indicators) with clear readings, and their requirements should comply with the provisions of 7.3 in ZBJ80003--87. The installed amplitude indicator should be easy for the driver to observe during operation. 7.6 Cranes with a lifting capacity greater than or equal to 16t should be equipped with a level. 7.7 The crane should be equipped with a horn. The horn button should be located in a position that is convenient for the driver to operate. 932
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7.8For truss boom cranes with a lifting height greater than 50m, an anemometer should be installed at the boom head. When the wind speed is greater than the working limit wind speed, an alarm should be issued to stop the operation.
7.9The pulley should have a device to prevent the wire rope from jumping out of the groove. For the pulley block that can be touched by the hand, a protective device should be installed to prevent the hand from squeezing into the space between the wire rope and the pulley.
7.10Crane that can be operated from two places should be equipped with an interlocking protection device to prevent simultaneous operation. 7.11The transmission mechanism and safety device of the newly designed crane must be tested for various components according to the relevant special test standards, and can only be installed after passing the test.
8Electrical system
8.1Electrically driven cranes should comply with the provisions of GB6067 and ZBJ80003. 8.2The electrical connection should have good contact to prevent loosening, and the wires and harnesses should be securely fixed. 8.3 Electric-driven cranes must be equipped with an emergency switch that can cut off the main power supply, and its installation location should be convenient for the driver to operate. 8.4 Internal combustion engine-driven cranes should be equipped with a flameout device in the upper control room. 8.5 All electrical controllers that control the movement of the crane mechanism should have zero position and grounding protection. 8.6 The driving lighting and signal devices of the crane should comply with the relevant provisions of GB4785 and GB7258. 8.7 The crane should be equipped with lighting equipment for night operations. 9 Operating system
9.1 The layout of the operating system should avoid misoperation and be easy to operate. 9.2 The operating handle and pedal should be able to reset automatically when no rigid retaining device is used. 9.3 There should be clear signs on or near all operating handles, pedals, etc. indicating the purpose and operating direction. 9.4 The operation should be light and flexible, and the operating force and operating stroke should comply with the provisions of ZBJ80003. 9.5 Cranes operated by operating handles and foot pedals are arranged as shown in Figure 1. Slewing
Operator's position
Figure 1 Schematic diagram of crane control layout
9.5.1 Slewing control - Handle 1:
Push the handle forward (away from the driver's direction). Slew right (left or center of the control room); - Slew left (right of the control room).
(9. 5. 4)
When the handle is in the middle position, the slewing power is cut off. JB87161998
Pull the handle backward (toward the driver's direction) to reverse the direction. 9.5.2 Telescopic control - Handle 2 or pedal 5: Push the handle forward to extend the boom. When the handle is in the middle position, keep the boom stationary. Pull the handle backward to retract the boom. Pedal 5 is optional and can replace handle 2.
9.5.3 Luffing control - Handle 3
Pull the handle backward to raise the boom. When the handle is in the middle position, keep the boom stationary. Push the handle forward to lower the boom. 9.5.4 Lifting operation - handle 4 and brake pedal 6: Pull the handle backward to lift the load. When the handle is in the middle position, cut off the lifting power and keep the load stationary (if equipped with automatic brake) or control the load by stepping on the brake pedal. Push the handle forward to lower the load. 9.5.5 Figure 1 shows the most basic layout of crane operation; generally, the handles or pedals in Figure 1 can be added or removed as needed. 9.6 Cranes with pilot control are arranged as shown in Figure 2. Lifting II (9.6.1)
(Boom extension and retraction) (9.6.3)
) Lowering
Lifting II
Operator's position
Figure 2 Schematic diagram of crane operation layout
9.6.1 Lifting 1 and slewing operation - Handle 1 and pedal 5 Lifting 1
9.6.1.1 Pull the handle backward to lift the load. When the handle is in the middle position, keep the load stationary (if equipped with automatic brake) or step on the brake pedal to control the load. Push the handle forward to lower the load. 9.6.1.2 Move the handle to the left to slew to the left. When the handle is in the middle position, cut off the slewing power. Move the handle to the right to slew to the right. 9.6.2 Lifting 1 and luffing control - handle 2 and pedal 6 9.6.2.1 Pull the handle back to raise the load. When the handle is in the middle position, hold the load stationary (if equipped with automatic brake) or press the brake pedal to control the load. Push the handle forward to lower the load. 9.6.2.2 Move the handle to the left to raise the boom. When the handle is in the middle position, hold the boom stationary. Move the handle to the right to lower the boom.
9.6.3 Boom extension and retraction control
9.6.3.1 Handle 3:
Push the handle forward to extend the boom. When the handle is in the middle position, hold the boom stationary. Pull the handle back to retract the boom. Note: Handle 3 can be an independent handle, and the telescopic function of the boom can be the forward and backward movement of handle 1. 934
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9.6.3.2 Use pedal 4 (optional) instead of handle 3; step on the pedal forward (press down with toe) to extend the boom. When the pedal is in the middle position, keep the boom stationary. Step on the pedal backward (press down with heel) to retract the boom.
10 Use and management
10.1 The use conditions of the crane must comply with the provisions of ZBJ80003. When exceeding the above provisions, the user should negotiate with the manufacturer to solve the problem when placing an order.
10.2 The user unit must establish a crane equipment file. The file should include: a) records of the time, location and working conditions of each activation; b) records of daily use, maintenance, repair, change, inspection and testing; c) records of equipment and personal accidents;
d) problems and evaluations of the equipment.
10.3 The crane must be maintained regularly, and it is strictly forbidden to operate with a defect. 10.4 When operating near transmission lines or in areas with strong electromagnetic wave induction, the crane should be equipped with an alarm for approaching transmission lines or have measures to prevent electromagnetic wave induction. The minimum distance between its crane arm, hoisting equipment, auxiliary equipment, wire rope, cable wind rope and heavy objects and the transmission line should not be less than the provisions of Table 1. Table 1 Minimum distance from transmission line
Transmission line voltage vkv
Minimum distance m
10.5 Cranes shall not operate on culverts, underground pipelines, air-raid shelters, etc. 1~35
0. 01(V-50)+3
10.6 Overloading is strictly prohibited. It is not allowed to pull or lift objects obliquely, push or pull objects that are squeezed and interlaced, and it is not allowed to lift objects buried in the soil or frozen and stuck to the ground.
10.7 Under normal circumstances, it is not allowed to use two or more cranes to lift a heavy object at the same time. The use of special circumstances should comply with the provisions of 5.1.2.3 of GB6067-85. 10.8 It is strictly forbidden to lower the load.
10.9 The wind force when the crane is working shall not exceed the specified value in the product manual. 10.10 Before lifting with outriggers, the outriggers must be firmly and reliably set according to the requirements of the manual. 10.11 No one is allowed to stand on the turntable when the crane is operating. When the truck crane is driving, no one is allowed to sit in the cabin on the vehicle. 10.12 During lifting operations, it is strictly forbidden to stand under the crane arm, and heavy objects are not allowed to be lifted when there are people on the heavy objects. Personnel on the operation site-all wear safety helmets.
10.13 The crane should be shut down during maintenance. When checking the oil level or adding fuel, smoking or lighting with open flames is not allowed. 10.14 The management of the crane should comply with the provisions of 5.2 of GB606785. 11 Drivers and lifting commanders
11.1 Crane drivers and lifting commanders must undergo a physical examination and pass the examination, and hold an operator's license and a commander's license before they can operate and command. 11.2 Crane drivers must understand the working principle, be familiar with the structure of the crane, the function of the safety device and its adjustment method, and master the operation method and maintenance technology.
11.3 When the heavy object is in a suspended state, the driver and the lifting commander must not leave their work station. 11.4 Crane drivers must concentrate when operating and cannot chat with other personnel. Only respond to the signals of the designated commander, but for the stop signal, no matter who issues it. Obey at all times. The driver should refuse to execute instructions that do not comply with the operating procedures. When someone climbs up the crane, it must be stopped. 11.5. Crane drivers should not operate cranes when they are physically unwell or mentally ill. It is strictly forbidden for drivers to operate cranes after drinking.
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