(Please read it carefully)

Excerpted from the Construction Industry Standard of the People's Republic of China JG/T100-1999

1 Crane driver

1.1 The driver shall be at least 18 years old and have a junior high school education or above.

1.2 The driver must have a physical examination once a year. Those suffering from color blindness, corrected vision less than 1.0, hearing impairment, heart disease, anemia, Meniere's disease, epilepsy, dizziness, sudden fainting, amputation of fingers and other diseases that hinder lifting operations cannot work as drivers.

1.3 Drivers must be trained by provincial and municipal labor departments or their designated units, or by professional (mechanic) schools. Work with certificates. In the whole process of operation, the operation can only be carried out under the command of the commander. It is strictly forbidden to operate without command, nor to operate without obeying the command signal.

2 Dismantler of crane

2.1 Dismantling workers must be male citizens at least 18 years old and have a junior high school education or above.

2.2 Dismantlers must be trained by provincial, municipal and labor departments and their designated units, or trained by professional (mechanic) schools and take up their posts with certificates.

2.3 All dismantling workers must work under the command of the designated professional commander, and others are not allowed to send command signals.

2.4 Dismantlers must wear safety helmets when entering the work site, and must wear anti-skid shoes, safety belts, work clothes, gloves, etc. when climbing.

3 Commanders (signalman)

3.1 In the process of disassembling and assembling the crane, special commanders must be appointed and work under their command.

3.2 Persons with color blindness, deafness, corrected vision lower than 1.0, heart disease, hypertension, Meniere's disease, epilepsy and other diseases cannot be engaged in command work.

3.3 In the crane operation, the commander is a good person to directly issue orders, and it is strictly prohibited to command the crane operation without a certificate

4 Inspection before operation

4.1 During the shift handover, the handover procedures shall be carefully completed, and the mechanical resume, shift handover records and records required by relevant departments shall be checked to see if they are complete. When finding or suspecting abnormal conditions of the crane, the driver who takes over the shift must take over the work face to face. It is strictly forbidden that the driver who takes over the shift does not connect with the driver who takes over the shift, or the driver who takes over the shift is told to take over the shift by others.

4.2 All main bolts of the crane shall be connected and fastened, and the main welds shall be free of cracks and open welds.

4.3 Check the electrical part according to relevant regulations.

4.4 Check the grounding and neutral protection facilities of the crane according to relevant requirements.

4.5 Before switching on the power, each controller shall be at zero position.

4.6 The operating system shall be flexible and accurate. The electrical components shall work normally, and the wire joints and components shall be fixed firmly without poor contact and exposed wires.

4.7 The working power supply voltage shall be 380V ± 5%.

4.8 Check the lubricating oil quantity and quality of mechanical transmission reducer.

4.9 Check the brake

4.10 Check whether the brake of each working mechanism operates flexibly and reliably.

4.11 Check that the oil volume in the hydraulic oil tank and brake oil storage device meets the requirements and the oil circuit is free of leakage.

4.12 Hook and pulleys. The guide sheave shall rotate flexibly without jamming. The wire ropes at each part shall be intact and the fixed end shall be firm and reliable.

4.13 Check the distance of the height limiter according to the instructions.

4.14 Check that the safe operating distance of the crane must comply with the provisions of Article 8.3, 8.4 and 8.5 in GB5144.

4.15 For cranes with passenger elevators, the following inspections shall be carried out before operation:

A. All switches, limit devices and safety devices shall be flexible and reliable;

B The steel wire rope, transmission parts and main stress components shall comply with relevant regulations;

C. The connection between the guide rail and the tower body shall be firm, all guide rails shall be straight, all interfaces shall not be misaligned, and there shall be no jamming during operation. The ladder cage shall not be scratched with other parts. The guide rope must be tensioned to the required degree according to relevant regulations, and it shall be firm and reliable.

4.16 When the crane is attacked by a storm with a wind speed of more than 25m/s (equivalent to a force 9 wind) or after a moderate earthquake, a comprehensive inspection must be carried out, and it can be put into use only after being approved by the competent technical department.

4.17 Before operation, the driver must go through the following inspections and confirm that they are in good condition.

A One operation cycle without load;

B. Trial lifting of heavy objects

C Check and verify the crane traveling, lifting height, amplitude and other limit devices, as well as the lifting torque, lifting weight limiter and other safety protection devices.

4.18 For attached cranes, the attachment device shall be inspected.

4.18.1 Inspection of attached frame of tower body:

A. The installation of the attached frame on the tower body section must be safe and reliable, and should comply with the relevant provisions in the operating instructions.

B The attachment frame and tower section shall be firmly fixed.

C All connecting pieces shall not be missing or loose

4.18.2 Inspection of attachment bar:

A. The connection between the attachment bar and the frame must be reliable;

B If the attachment bar has an adjustment device, it shall be locked after adjustment as required;

C The connection of the attachment rod itself shall not be loose;

4.18.3 Connection between the attachment bar and the building:

A The building connected with the attachment bar shall be free of cracks or damage;

B The anchoring connection between the attachment bar and the building must be firm during work, and there should be no dislocation.

C All connectors shall be complete and reliable;

5 Operation

5.1 The driver must be familiar with the performance of the crane he is operating, and shall operate in strict accordance with the instructions. It is not allowed to drag or pull weights obliquely, lift or pull weights buried in the ground or bonded to the ground, equipment, or unknown weights.

5.2 When the crane starts to operate, the driver shall first send out an audible signal to remind the personnel on the operation site to pay attention.

5.3 The hanging of heavy objects must meet relevant requirements.

5.3.1 It is strictly prohibited to use hooks to directly hang heavy objects. The hooks must use slings and riggings to hang heavy objects.

5.3.2 When lifting short broken materials, they must be packed with nets and bags with sufficient strength, and shall not be directly bundled and lifted.

5.3.3 When lifting long and thin materials, the materials must be bundled at two places and lifted with two lifting points. During the whole lifting process, the materials should be kept in a horizontal state.

5.3.4 The lifted weight shall not swing or rotate during the whole lifting process. It is not allowed to lift the unstable heavy objects, and the heavy objects with large volume shall be lifted by pulling the sliding rope.

5.3.5 No heavy objects shall be hung on the lifted objects.

5.4 When operating the controller, it must start from the zero gear and push it to the required gear step by step. When the transmission device operates in the opposite direction, the controller first returns to the zero position, and then reverses the operation one gear at a time. It is prohibited to overstep the gear and start and stop the gear.

5.5 When lifting heavy objects, it is not allowed to rise and fall suddenly to prevent scattering, loosening, deflection and other situations during lifting. When lifting, the heavy object must be lifted about 50 mm above the ground and stopped. The operation can be commanded only after the brake, material binding, lifting points and slings are confirmed to be OK.

5.6 The driver shall master the structure, working principle and maintenance method of various safety protection devices of the crane to be operated, and must immediately eliminate any fault. The driver shall not operate the hoisting operation with the safety device invalid, missing or inaccurate.

5.7 The driver must concentrate on the operation. When the safety device displays an alarm, it must operate according to the relevant provisions in the user manual.

5.8 The crane is not allowed to work with excessive wind and overload.

5.9 In the lifting process, when the hook pulley block is 5m close to the boom, low-speed lifting shall be applied to prevent collision with the boom.

5.10 It is strictly prohibited to lower the hook or heavy object by free falling. When the weight drops about lm from the positioning point, it must be positioned slowly.

5.11 When the crane travels to the place about 3m away from the limit switch bump, it shall slow down and stop in advance.

5.12 When lifting a heavy object steadily during operation, the height of the object above the obstacle it crosses shall not be less than lm.

5.13 It is not allowed to lift heavy objects with people and lift people with cranes.

5.14 During operation, when there is a temporary stop or power failure, the heavy object must be unloaded and the hook must be raised. Set each operating handle (button) to the "zero" position. If the weight cannot be raised or lowered due to power failure, relevant personnel shall study and take appropriate measures according to the site and specific conditions.

5.15 During the operation of the crane, it is strictly forbidden to repair, maintain and adjust the transmission part, moving part and the area where the moving parts reach.

5.16 Stop the operation in case of the following conditions.

A. Severe weather, such as heavy rain, heavy snow, heavy fog, and exceeding the allowable working wind force will affect the safe operation.

B The crane has electric leakage.

C The wire rope is seriously worn, twisted, broken, knotted or grooved;

D. The safety protection device fails;

E Each transmission mechanism has abnormal phenomenon and abnormal sound;

F Deformation of metal structure;

G Other faults of the crane that hinder the operation and affect the safety.

5.17 The winding of wire rope on the drum must be neat, and operation is not allowed under the following circumstances:;

A. Rope climbing, rope disorder and rope gnawing

B. During multi-layer winding, the ropes between layers are jammed.

5.18 The driver must get on and off the crane in the specified passage. Do not hold any object when getting on or off the crane.

5.19 It is prohibited to place tools, parts or sundries in various parts of the crane, and it is prohibited to throw anything down from the crane.

5.20 In case of multi crane operation, overlapping operation of cranes within the turning radius shall be avoided. Under special circumstances, overlapping operations must comply with Article 8.5 of GB5144.

5.21 It is not allowed to use multiple cranes to lift heavy objects.

5.22 When lifting or lowering heavy objects, no one is allowed to pass or stay under them.

5.23 The driver must concentrate on the operation, and shall not leave the cab during the lifting operation.

5.24 During crane operation, irrelevant personnel are not allowed to get on and off the crane. Combustibles and objects hindering operation are not allowed to be placed in the cab to prevent electric shock and fire.

5.25 The glass separation in the cab shall be flat and clean, and shall not affect the driver's vision.

5.26 When working at night, there should be enough illumination.

5.27 For the crane without central collecting ring and the hoisting mechanism not installed in the rotary part, the operation must be strictly in accordance with the provisions of the user manual.

5.28 In the same project, the crane needs to travel first and then be fixed, and the following regulations shall be observed during operation:

A. The crane must be placed on a fixed foundation.

B. Lock the rail clamping device and use a special stop device to reliably block all traveling trolleys on the track without moving in any direction. The circuit of crane traveling system shall be cut off.

5.30 In case of temporary power failure during operation, the driver must pull all handles to zero position and cut off the main power supply.

6 Requirements after each shift.

6.1 The jib crane will place the boom at a large range, the trolley luffing crane will drive the trolley to the position specified in the manual, and lift the hook to the zero position. It is strictly prohibited to lift heavy objects on the hook.

6.2 Pull all controllers to the zero position, cut off the main power supply, put away the tools, close all doors and windows and lock them, and turn on the obstacle indicator light at night.

6.3 If there is more than one crane on a construction site, their mutual positions shall meet the requirements of Article 8.5 in GB5144.

6.4 The safety belt must be fastened during inspection, repair, maintenance, refueling and other work at all parts above the underframe without rails.

6.5 Fill in the on duty resume and various records.

7 Disassembly, lifting and anchoring of crane

7.1 Disassembly and assembly of crane

7.1.1 The disassembly, lifting and anchoring of cranes must be completed by specially trained personnel with work permits.

7.1.2 For the crane to be disassembled, the disassembly workers must follow the following principles:

a. Understand the performance of the crane;

b. The installation and disassembly procedures specified in the instructions must be understood in detail and strictly followed. It is strictly prohibited to make any changes to the disassembly and assembly procedures specified in the product instructions;

c. Be familiar with the connection form used in the connection of the crane assembly or disassembly parts and the size, regulations and requirements of the connection pieces used. The bolts with lubrication requirements must be lubricated with the specified lubricant at the specified time according to the requirements of the instructions.

d. Understand the weight and lifting point position of each dismounted part;

7.1.3 During the operation, the disassembly workers must have a comprehensive understanding of the performance and operating procedures of the mechanical equipment and tools used, and use them in strict accordance with the regulations.

7.1.4 During the installation of the crane, special attention must be paid to the connecting pieces of each installation component, which must be completely installed and firmly fixed according to the instructions, and detailed inspection must be carried out after installation.

7.1.5 When installing or disassembling a crane with a lifting arm and a balancing arm, it is strictly forbidden to interrupt the operation after disassembling only one arm.

7.1.6 When tightening bolts requiring preload, special readable tools must be used to accurately tighten the bolts to the specified preload value.

7.1.7 The disassembly and assembly of the electrical part of the crane must be carried out by the official electrician with the electrician operation certificate issued by the power supply bureau and the electrical apprentice led by him according to the regulations of the national labor and personnel department. It is strictly forbidden for others to disassemble and assemble.

7.1.8 When installing the crane, the crane traveling limit device and the stopper block must be firmly and reliably installed.

7.1.9 When installing the crane, safety protection parts such as railings, platforms, guard chains, handrails, and guard rings must be completely installed.

7.1.10 When removing a crane that cannot be removed by normal methods due to damage or a crane that lacks a working platform, railings and safety protection devices, there must be a removal plan approved by the technical safety department to ensure safety.

7.1.11 All working mechanisms of the installed crane must be able to work normally.

7.2 Lifting tower body

7.2.1 When lifting the tower body, the jack up crane must be in a good balance state according to the instructions, and the guide device must be adjusted to the specified clearance.

7.2.2 In the process of lifting and lowering the tower body, special personnel must carefully check to prevent the cable from being pulled, scratched, squeezed, etc.

7.2.3 Tower body lifting operation shall not be carried out under the following conditions:.

A The wind force at the operation height exceeds the provisions in the instructions;

B In rain, snow, fog and other slippery environments;

C In a smoky environment.

7.3 Attachment anchorage

7.3.1 For the crane to be attached, the user department must make a plan in advance according to the requirements of the manual, and write written materials including the following contents:

A Distance between attachment devices;

B The horizontal attachment distance to the building;

C Connection form with buildings;

D Various special requirements.

7.3.2 The installation and removal of the attachment rod shall meet the requirements.

7.3.2.1 When installing and disassembling the attachment bar, the crane must be in a balanced state during lifting, and the two arms must be at a position perpendicular to the attachment direction.

7.3.2.2 When installing each attachment bar, it is not allowed to raise the tower body at will, and it must be ensured that the free height of the crane before attachment conforms to the relevant provisions of the product.

7.3.2.3 When removing the attachment bar, the tower body must be lowered first to make the crane