Standard and technology of safe operation procedures for mobile cranes

(1) Check whether all parts of the crane are in good technical condition according to the specified items and standards. Focus on inspection of control devices, hydraulic devices, safety devices and wire ropes. , can only be used after meeting the safety standards. It is forbidden for cranes to work in spite of illness.

(2) Before driving, check the driving license, driver's license and other necessary driving documents, and do not driving without a license.

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(3) Factory crane drivers must strictly abide by road traffic management regulations, factory traffic safety management standards and safety production codes when driving.

(4) Observe the situation around the vehicle before starting, and honk the horn after confirming safety (the vehicle with pneumatic braking will wait for the barometer reading to reach the specified value).

(5) When the crane is started, low gear must be used; The bottom of the hoisted object must be 300 ~ 400 mm from the ground, and it is not allowed to shift gears during driving, so as to avoid sudden steering and emergency braking, and it is necessary to drive slowly.

(6) Cranes with steering assist devices are prohibited from stalling and sliding. Cranes with pneumatic brakes and cranes in operation are not allowed to turn off and slide down on long slopes.

(7) When entering or leaving the job site or driving, pay attention to the barrier-free scraping arm above. The head, hands, feet and other limbs of the personnel in the car shall not extend out of the car.

(8) In operation, the driver must cooperate closely with the rigger and obey the signal command of the commander. At work, when the driver sends an emergency stop signal to anyone, he must stop immediately.

(9) When the crane is working, it is forbidden to stand under the jib, hook and suspended heavy objects. No standing on the turntable. When the boom rotates and the crane is running, it is forbidden to scratch any surrounding facilities during following, reversing and turning around.

(10) The size of the work site and the softness of the geology should not affect the safety of crane operation. Lateral lifting operation shall not be carried out on slopes above 5%. If operation is required, the vehicle body should be leveled.

(1 1) When the crane is lifting heavy objects, it should first lift the heavy objects about 10 cm from the ground, and check whether the stability of the crane and the brakes are flexible and effective, and then continue to work after confirming normal safety.

(12) There should be no wheel sinking or body tilting on the road where the crane travels. The ground hardness of each leg of truck crane should be consistent, and no serious sinking will occur during operation.

(13) When the crane is fully loaded or nearly fully loaded, it is forbidden to carry out two or more operations at the same time, and the left-right rotation angle of the boom shall not exceed 45.

(14) When the industrial roof truss is hoisted by crane, the column is in place, the crane beam is in place, and when the roof plate (beam) is hoisted, it must be completely dismantled without scratches.

(15) When two cranes lift a working object at the same time, perfect safety measures must be formulated and commanded by one person. During hoisting, the vertical speed of two cars should be equal, and the load shared by each car should not exceed 80% of the maximum allowable weight.

(16) Try to avoid working under high-voltage transmission lines; When working under high-voltage transmission lines, the minimum distance between the boom, spreader, auxiliary tools, wire rope and heavy objects and the transmission lines shall not be less than that specified in Table 1.

Transmission line voltage kV

& lt 1

10-20

35- 1 10

220

330

Minimum allowable distance

1.5

2

four

six

seven

(17) In the process of crane operation, the lifting performance technical regulations must be strictly implemented. Do not adjust the brakes of the hoisting and luffing mechanism under load. When lifting articles that are easy to slip, anti-slip measures should be taken for hooks and slings.

(18) It is forbidden to lift people by crane, and it is forbidden to touch the wire rope and pulley by hand when working.

(19) The crane driver has the right to refuse lifting in the following cases:

1) The steel wire rope used by the crane does not meet the safety technical requirements.

2) The hanging objects are not firmly bound,

3) When someone is working or the hook is held,

4) When the suspended object exceeds the rated weight or the weight of the object is unknown,

5) When the hanger is buried underground,

6) When the command signal is unclear or many people command,

7) Don't mention explosives, such as oxygen cylinders and acetylene generators.

8) When it is necessary to cable the hanger,

9) When the crane cannot be eliminated,

10) When working in the site with bad working environment, there is no supervision, and when maintaining the site safety, such as narrow space, too many pedestrians, poor lighting, etc.

(20) When the crane fails in operation, it should support the hanging objects, put down the heavy objects when repairing, and stop running before repairing.

Maintenance after car collection

(2 1) Take protective measures when overhauling vehicles. Clean the whole vehicle and check the supplementary fuel, lubricating oil and hydraulic oil.