I. Safety requirements for preparation before operation
1. Only licensed drivers can operate the crane independently. No driver is allowed to enter the cab.
2, do a good job of succession, handover should be introduced to the successor, the successor should read the handover diary, and check the crane.
3. Wear labor protection articles correctly, don't drink before going to work, and don't lift your feet after drinking.
4. Check the brakes, hooks, wire ropes and safety devices, and dismantle them before operation if abnormal performance is found.
5, check the cart and car and around the track, confirm no one and no obstacles to turn off the main power supply, power supply voltage should be above 360 volts.
6. Before turning off the main power supply, all control handles should be at zero position.
7. Carry out no-load operation test on the crane, and all limit switches, emergency switches and brakes shall be sensitive and reliable.
Second, the safety requirements in the operation
1, the driver should concentrate on the operation, pay close attention to the surrounding situation, and must not do anything unrelated to the work.
2, one of the following circumstances, the driver should not operate:
(1) Overload or unknown object weight. Such as lifting, pulling up buried objects with unknown weight or tension, cable-stayed, suspended cable, etc.
(2) There are defects or damages in the structure or components that affect the safety work, such as the failure of brakes and safety devices, the damage of hook nut locking device, and the damage of wire rope reaching the scrapping standard.
(3) The binding and hanging are not firm or balanced, which may slide, and there is no gasket between the edges and corners of the heavy object and the wire rope.
(4) People or floating objects on the suspended objects.
(5) The work site is dark, and it is impossible to see the site, the hoisted object and the command signal clearly.
3. Turn or push and pull the handwheel or handle of the controller evenly and shift gears gradually.
4. During normal operation, limit switches, emergency switches and reversing parking shall not be used.
5. Do not adjust the brake of the hoisting mechanism under load.
6, driving and up and down objects, must ring the alarm. When approaching the person in operation, an intermittent alarm should be given.
7, lifting, lifting objects shall not be over people and important equipment.
8, hook up or down, wire rope should be located in the drum and pulley rope groove. When the hook is lowered to the lowest position, the wire rope on the drum must be kept for more than 3 turns.
9, the operation must be carried out according to the command signal, emergency stop signal, no matter who sent it, should be executed immediately.
10, when the hoisted load approaches or reaches the rated lifting weight, check the brake before lifting, try to lift it with a small height and short stroke, and then lift it smoothly.
1 1. During the operation of the crane, if the parts are damaged, put down the price, turn off the main power supply and report to the leader for maintenance. Do not perform maintenance during operation.
12, crane operation, in case of sudden power failure, all controllers should be pulled back to zero. When lifting objects on the hook, fences and instructions should be set up in the dangerous area below the heavy objects, and it is forbidden for people to pass under the hoisted objects.
13. Drivers are forbidden to operate cranes and collide with cranes of the same span. The distance between cranes on the same track should not be less than1m.
14. When two cranes cooperate to lift the same object, the wire rope should be vertical, the lifting and operation of each crane should be synchronized, and the load borne by each crane should not exceed its rated lifting weight. If the above requirements cannot be met, the rated lifting weight shall be reduced to 80%, and an engineer shall be present to guide the lifting.
15. When the crane runs on two floors, the horizontal distance between the upper crane and it should not be less than1m.. When the hook of the upper crane does not rise to the limit position, the lower crane shall not pass or travel under it. When the upper crane drops the hook, it must get in touch with the lower crane and get the response signal before dropping the hook.
16. When the wind force of the crane working in the open air on the track is greater than 6, it should generally stop working and break down.
Three. Safety requirements at the end of operation
1. Lift the hook to a higher position, drive the trolley to the near-end beam far away from the trolley sliding line, and lift the trolley to the parking position of the crane.
2. The fetching device is made of electric panel and grab bucket, and should be placed on the ground.
3. Reset all controllers to zero, and pull down the knife switch of the protection cabinet.
4. For cranes working in the open air, the cart and trolley should be fixed firmly to prevent accidents caused by wind blowing.
5. The problems, faults, maintenance and treatment found in crane operation and inspection are recorded in the shift book.
6. Handle the handover procedures according to the handover system. When the crane works in a single shift, or when the successor driver does not arrive, it is necessary to report the operation to the team leader, and it is not allowed to leave the crane until it is allowed.
Lifting machinery (equipment) driver
"ten don't hang" and "two don't bump"
Ten don't hang:
First, the command signal is unknown or multi-person command does not hang.
Two, more than the rated lifting weight of lifting machinery (equipment).
Three, tied by hanging objects, hanging objects are not firm or unbalanced.
Four, there are people or floating objects on the suspended objects.
Five, safety protection device failure not hanging.
Six, buried things don't hang.
Seven, oblique hanging or unbalanced hanging.
Eight, there is no cushion or cushion between the edges and corners of the suspension and the steel wire.
Nine, someone is not hanging under the hanging object.
Ten, the line of sight is not clear or the weight of the object is not clear.
"two no fights":
First, two machines (equipment) do not collide.
Two, are not allowed to be suspended objects collided with other objects.
Company (Hooker) personnel safety operation procedures.
1, the company rope (hook worker) must be familiar with the safety operation procedures and action characteristics of all kinds of cranes, have knowledge of binding and hanging, and be familiar with the performance and scrapping standards of lifting tools such as hooks, wire ropes, chains and rope components, as well as the maximum allowable load and safety technical knowledge for maintenance and use.
2. Before work, check whether the spreader is firm. If chains, steel ropes, yarn ropes and hemp ropes that have reached the scrapping standard are found, they shall not be used.
3. Correct use of lifting tools and methods according to the lifting object, close cooperation with crane (crane) workers in the lifting process, and correct use of bell gestures to signal in time.
4. When working, clear the obstacles on the lifting place and running channel in advance, call the staying personnel to avoid, and choose the appropriate location and the route escorted by the object.
5, when lifting heavy objects, try not to be too high from the ground, in any case, it is forbidden to lift heavy objects over personnel. All personnel are not allowed to stay or walk under heavy objects, and objects are not allowed to hang in the air for a long time.
6. It is forbidden to directly correct the ropes tightened by heavy objects, such as steel ropes and chains, by hand during work. If loose binding or strange lifting tools are found during lifting, stop the car immediately for inspection, and never be ungrateful.
7. When turning large objects, such as old tires or wooden mats, the operator should stand opposite the tilting direction of the heavy objects. It is forbidden for the noodle team to stand in an oblique direction.
8. The length of the selected steel wire rope or chain must meet the requirements, and the included angle between each strand shall not exceed 60 degrees. Special lifting accessories (such as pressure plate screws and lifting rings, etc.). ) Special attention should be paid.
9. If there is oil stain on the lifting object, the oil stain at the binding place should be wiped clean to prevent slipping, and the sharp edges and corners should be padded with soft objects to prevent cutting the rope.
10, use two machines to lift heavy objects at the same time, and the weight distribution shall not exceed 80% of the rated load of the hoisting machinery, and ensure that there is a certain distance between the two hoisting machinery, and collision is not allowed.
1 1. The unloaded rope ends left after binding must be firmly tied to the hook or the hoisted object to prevent the hoisted object from moving and hooking people or things along the way.
12. When lifting an object, the movable parts attached to the object should be fixed or removed to prevent the center of gravity from shifting or the movable parts from slipping and injuring people.
13. Special workstations such as hanging baskets and buckets must be used to lift a number of scattered small objects. When lifting more than two heavy objects at the same time, keep the objects stable and avoid colliding with each other.
14, at the beginning of lifting, people around must be told to leave, and the company (hook worker) should retreat to a safe place, and then signal lifting. When the weight is off the ground 100 mm, stop to check the binding condition, and then continue lifting after it is confirmed. It is strictly prohibited to carry out operating procedures due to short lifting distance or any other reasons.
15. Under any circumstances, it is forbidden to use personal weight to balance the hanging objects or use manpower to support the hanging objects, and it is not allowed to stand on the hanging objects.
16, unload the hanging object, pad the wood, support the irregular object and keep it stable. Do not press objects on wires and pipes, or block passages. These items should be stacked neatly and smoothly.
17, lifting large objects or products, there must be two people to operate, one person is responsible for the command. When unloading on the transport vehicle, it is necessary to observe whether the center of gravity is stable and make sure that it will not fall off after loosening, so as to loosen the unloading.
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