The full text of the safety operation regulations for general gantry crane drivers

Gantry cranes, commonly known as gantry cranes, are lifting equipment used outdoors. For the safe use of gantry cranes , there are safety operating procedures for gantry crane drivers. Our editor has compiled a more comprehensive introduction on the Internet. Share with everyone, I hope to help everyone. The operating regulations make relevant provisions for the driver who operates the crane and the inspection, operation, shutdown, shifting, maintenance, etc. before the start of the gantry crane to ensure the safe use of the crane.

1. Basic regulations for gantry crane

1.  The driver must be in good health, pass the inspection, prove that he has no heart disease, high blood pressure, mental abnormality, etc., and have the physical conditions to work at heights.
2.  Drivers must have specialized technical training, understand the structure and performance of the machine, be familiar with operating methods, maintenance procedures and signal rules for lifting work, have fairly proficient operating skills, and pass the examination before they can operate alone.
3.  The trainees are only allowed to operate under the supervision of the driver. During the supervision, the driver shall not engage in other work. It is strictly forbidden to drive without a driver.
4.  Drivers must wear work clothes.
5.  The track foundation must be solid and reliable, and there should be a car stop at the end of the track. The track must be well grounded, the grounding resistance must not be greater than 10 ohms, and the track terminal limit device must always be kept intact.
6.  When the new machine is installed, moved, or put into operation after being repaired, it should be tested in accordance with the regulations. The console should be padded with wood or insulating boards, and it can be used after passing the inspection.
7.  Cranes are forbidden to lift people. When lifting explosives and other dangerous goods and important objects, special safety measures must be taken and operated by the driver.
8.  The weight of the lifting object shall not exceed the rated lifting capacity of the machine. It is forbidden to lift obliquely, to lift objects buried in the ground, to lift objects that are frozen on the ground, or to lift objects that are jammed by other heavy objects.
9.  Operation is prohibited in severe weather (such as thunderstorms, freezing, heavy snow, and strong winds above level 6). In strong winds, the hook should be raised to the highest position.
10.  It is strictly forbidden to use open flames for heating on the aircraft, and smoking is forbidden when cleaning parts with oil. Oil and wiping materials shall not be thrown indiscriminately.
11.  The aircraft must be equipped with qualified fire extinguishing devices. In the event of an electrical fire, the relevant power supply should be cut off immediately, and an insulated fire extinguisher should be used to extinguish the fire.
12.  All electrical safety protection devices should always be in good condition. A rubber insulation board should be laid before the high-voltage switch. If the electrical part fails, it should be overhauled by a full-time electrician. The voltage of the work lamp used for maintenance must be below 36 volts.
13.  When working at night, there should be adequate lighting on board and in the work area.
14.  Drivers should take a full rest before duty to ensure that they are full of energy and focus on duty; fatigue driving is strictly prohibited, and sick work is strictly prohibited.
15.  It is strictly forbidden for drivers to drink alcohol before and on duty, and it is forbidden to operate machinery after drinking.

2. Gantry crane starting

1.  Check before starting
   1.  There are no obstacles on the track.
   2.  Remove the anti-sliding device of the gantry crane.
   3.  There should be no loosening of the connecting bolts of each main structure.
   4.  The frost and snow on the escalators and platforms should be cleaned in the cold season.
   5.  Lubricate all parts according to the lubrication period table.
   6.  The clamp head of the hoisting wire rope should be firm, and the wire rope should not be twisted or squeezed.
   7.  All contactors should be intact, limit switches are complete, and their positions are correct.
   8.  The cable has no rupture and leakage, and there is no obvious damage to the insulation of each wire.
   9.  The power supply voltage should meet the regulations, and its variation range should not exceed -5~+10% of the rated value.
   10.  All operating handles should be placed in the zero position.
2.  Start procedure
   1.  Turn on the power switch and the main transformer is live.
   2.  Combine the power supply switch and control switch for lifting and walking on the control cabinet to prepare the power supply for operation.
   3.  Turn on the main control contactor (or automatic air circuit breaker) on the control panel, and all the main circuit and operating circuit are put in.
   4.  Operate the controller to start work.
3.  Check after starting
   1.  The gears of each transmission mechanism mesh normally, and there is no abnormal sound.
   2.  Carry out a no-load test run to check whether the pointer positions of the various meters are normal, and whether the contactors, limit switches and brakes are flexible and reliable.
   3.  All agencies work together for a few minutes, and they can only be put into work after confirming that the actions of each department are normal and reliable.

3.Gantry crane operation

1.  The driver should obey the command of the operation commander and operate after receiving the signal. The horn must be sounded before the operation, and the stop signal (including the stop signal issued by the non-commander) should be stopped immediately, and the situation should be checked before driving. The driver should pay close attention to the actions of the operators. When gantry cranes are hoisting objects, a bell should be sounded for people to avoid or bypass, and it is forbidden to pass over people's heads, and a driving warning signal must be given before driving.
2.  When lifting operations, the lifting driver should closely cooperate with the commander. The lifting driver shall strictly implement the signal of the commander . When the signal is unclear or wrong, the lifting driver may refuse to implement it.
3.  Drivers must concentrate when working, are not allowed to smoke, are not allowed to do things that have nothing to do with the operation, and are not allowed to chat with others. Do not leave your post without authorization during working hours.
4.  The weight of the object to be lifted shall not exceed the rated lifting capacity of the gantry crane, and it is forbidden to lift the object at an angle.
5.  When the driver lifts a heavy object for the first time after taking over, he should first lift the heavy object about 30 cm from the ground and confirm that the brake works reliably before starting the lifting operation.
6.  For each operation, the object should generally be lifted about 30 cm from the ground, and the operator should check the firmness and stability of the hoisted object, and then continue to lift.
7.  When the weight of the lifting cargo is close to the rated load of the gantry crane, after lifting about 10 cm from the ground, stop the machine to check the stability of the crane, the reliability of the brake and the force of the wire rope, and continue lifting after confirming that it is normal.
8.  When lifting heavy objects, raise and lower them smoothly. The rapid decline should not be too long. When the descending speed of the weight is greater than the synchronous speed of the motor, it is not allowed to overstep the gear and directly perform reverse braking. It is not allowed to stop suddenly when heavy objects are falling rapidly.
9. When the suspended object needs to perform reverse operation, the controller must first be pulled to the zero position, and the reverse operation can be performed after the mechanism is completely stopped and the object is stable. It is forbidden to use reverse operation to stop. Try to avoid emergency braking.
10.  When walking, a dedicated person should monitor the retracting and unwinding of the cable and the operation of the trolley. If any problems are found, immediately notify the driver to stop, or manually disconnect the trolley limit switch, and the crane shall be no less than 3 meters away from the end of the track.
11.  When the hook is lowered to the lowest position, there must be at least 3 loops of wire rope on the lifting drum, and the wire ropes should be arranged neatly on the drum.
12.  During operation, you should always listen to the sound of each transmission part, check that the temperature of each bearing must not exceed 85°C, and the temperature rise of each motor must not exceed 60°C. If the problem is found, the machine must be shut down in time.
13.  The adjustment and maintenance of the transmission parts must be carried out after the shutdown. When the gantry crane is inspected, adjusted and repaired, the power supply should be cut off, and the "Manned Inspection" sign should be hung up to avoid accidents caused by accidental driving.
14.  In case of sudden power failure or other failures during operation, the main circuit switch should be cut off, all controller handles should be turned to the zero position, and the hoisted objects should be dropped to the ground and not suspended in the air.
15.  When lifting an object to cross an obstacle, the object should be lifted more than 1.5 meters above the highest point of the obstacle before it can be crossed.
16.  When two gantry cranes of the same model are lifted, they should be approved by the mechanical and electrical technology and safety department, and safety measures should be taken and unified command. The lifting weight shall not exceed 75% of the rated lifting weight of the dual machine, and the load shared by each machine shall not exceed 80% of the rated lifting weight of the machine. When lifting, try to use balance beam (hanger) to hang. When there is no balance beam, keep the wire rope vertical at all times.
17.  The safety distance between any part of the crane and the conductive circuit shall not be less than the following table:
    1. Line voltage (kV) Below lKV3~10KV35KV and above
    2. Safety distance (m)1.524
18.  The crane operator shall strictly abide by the "ten no hanging" regulations:
    1.  Do not hang when the wire rope is unqualified or the safety device fails;
    2.  Do not hang loose goods when they are not tied tightly or fragmented goods are packed without containers;
    3.  Do not hang when the command signal is unknown;
    4.  Don't hang the container when it is too full.
    5.  Do not hang when there is no liner between the edges and corners of the object to be hoisted and the binding wire rope;
    6.  The weight of the object to be hoisted is not clear or is buried in the ground or exceeds the crane load when it is not hoisted;
    7.  Do not hoist when hoisting heavy objects obliquely;
    8.  Do not hang when there are people on the hoisted object or there are floating animals on the hoisted object;
    9.  Oxygen cylinders, acetylene cylinders and other flammable and explosive materials shall not be hung without safety devices;
    10.  Do not hang during severe weather such as thunderstorms, icing, heavy snow, or strong winds of grade 6 and above.

5. Gantry crane shutdown

1.  The empty crane hook must be raised to a distance of 5-6 meters from the ground.
2.  Drive the gantry crane to a safe and undisturbed place.
3.  Place the control handles of each controller at the zero position and cut off the power supply.
4.  Do the daily maintenance of each part according to the regulations, check the tools, and do a fire check.
5.  When shutting down, the power should be cut off, the door should be closed and locked, and anti-running measures should be taken.

5. Daily maintenance of gantry crane

1.  Check the oil quantity and quality of each gearbox, and add lubricating oil to each lubrication part according to regulations. The lubricating grease must be kept clean and the grade meets the requirements.
2.  Check the foundation bolts of each motor, gearbox, etc. and the connecting bolts of each part. If they are found to be loose, they should be tightened.
3.  Check the clearance and effectiveness of each brake.
4.  Check and maintain the flexibility and reliability of safety protection devices such as limit switches.
5.  Check the wear and broken wire of the wire rope. If the broken wire exceeds 7% in each pitch, it should be replaced in time. The connection between the wire rope and the drum must be firm.
6.  Check whether the electrical equipment is operating normally. If any abnormalities are found, a full-time electrician should be notified to perform maintenance in time.
7.  Check that the track foundation does not sink or crack, the track of the track is smooth, and the joints are good; the grounding device of the track should be kept in good condition.
8.  Do a good job of cleaning the whole machine and keep it tidy.
9.  After the new or old machine is put into use after overhaul, it should be maintained according to the regulations of the running-in period, and the oil should be changed on time.

6.Regulations on shift handover of gantry crane

1.  The shift staff should provide convenience for the successors, the day shift should create conditions for the night shift, the regular maintenance work of the machinery should be done before the shift, and the machinery operation records should be carefully filled in.
2.  The successor should arrive at work 15 minutes in advance and be ready for succession.
3.  The shift should be transferred on board. When shifting shifts, the drivers of the two shifts should jointly check the mechanical and electrical equipment of the whole machine, and fill in the driver shift records.
4.  Both parties to the handover must earnestly implement the "five handovers" and "three checks":
   • A. "Five delivery": delivery of production tasks, construction conditions and quality requirements; delivery of machinery operation and maintenance; delivery of tools, fuel, and accessories consumption; delivery of potential accidents and troubleshooting; delivery of safety measures and precautions.
   • B. "Three Checks": Check the operation and maintenance of the machine; check whether the machine operation record is accurate and complete; check whether the accompanying tools are complete.

When problems are discovered during the handover, the causes shall be found out and negotiated and dealt with, and major problems shall be reported to the competent authority.

1.  The shift personnel shall not conceal the accident. The shift personnel shall be responsible for the problems that occur due to unclear explanations, and the successors shall be responsible for the accidents caused by improper inspections and perfunctory matters.
2.  Mechanical failure should be handled by the staff on duty. If the handling time is too long, it can be passed on to the successor after obtaining the consent of the relevant higher-level department. All the incidents, handling conditions, and opinions must be clearly explained during the transfer.
3.  Both parties to the shift must fill in the shift record carefully and sign it together.

The personnel of the gantry crane must strictly abide by the crane operating regulations, especially the ten no-hanging principle.

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