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Cranes operation procedures
Add Time:[2011-08-15 16:31:09]   Hits:957    Print  Close

Cranes operation procedures

Crane operation procedures to suitable models

1, motorized transfer cart
2, single girder crane.
3, electric hoist.
4, double beam bridge crane

Article 1, the hoisting machinery with the cab must have the special assigned operating driver. Strictly prohibit to be drived by unassigned persons.

Article 2: crane drivers must hold a special type of operation certificate, with which the driver can operate the specified models independently.

Article 3: if one of following cases is occured to the hoisting machinery, operation of it is banned.
1, wire ropes come to the rejection standard.
2, hooks, pulleys, or reels come up to the rejection standard.
3, the braking torque fails to brake rated load.
4, the limit switch fails to operate.
5, the main stress steel parts are cracks or flaws, or open welding.
6, girders are elastic deformation or permanent deformation beyond repair.
7, the wheel is crack, flaws, seriously get stuck on rail or "three wheels on".
8, the ground wire fails to protect from electric shock or the insulation can not reach rating value.
9, the motor temperature rise is more than rating.
10, one phase rotor resistance is in a opened circuit.
11, someone stays there to idle (except inspection, repair or assignment to guide).
12, when wind up to six and above.
13, new installation, modification, overhaul has not got through acceptance inspection.
14, track crane beam is loose, broken, objects broken, end stop failure.

Article 4: general bridge crane operating procedures:
1, after drink operation of the crane is strictly prohibit.
2, to prohibit to take the irrelevant personnel get on the crane.
3, first check and confirm before driving mechanical, electrical, safety device is good; There are no bumping, block, scratch phenomenon; when everything is normal, ring the alarm, then test run.
4, during inspection,if something is found with one of cases in the provisions in article 3, stop immediately.
5, operation must concentrate on, and closely cooperate with the below. When operating no smoking, eating and talking with others.
6, operating in strict execution "ten don't lifting" :
(1) more than rated load,no lifting.
(2) the unknown command signal, load is unknown , invisibility. No lifting.
(3) the sling and accessories not firm, not meet safety requirements. not lifting.
(4) when lifting for processing. Not lifting
(5) crooked and skew sling. No lifting.
(6) someone standing on or float load. No lifting.
(7) inflammable and explosive objects no lifting.
(8) bladed or edged objects edges. No lifting.
(9) buried objects in the earth. No lifting.
(10) orders in violation of the procedures. Not lifting
7, operation is always and smoothly start, lift, fall. When close to cars or persons must bell to alarm in time.
8, when hoisting items, insist on "three no-over" :
(1) no hoisting from the people pass over.
(2) no hoisting from the bus, train over.
(3) no hoisting from equipments pass over.
9, when operation, see a stop signal send out by anyone and stop immediately.
10, lifting sailed objects, swimmed and sailed objects, or pocket sailed objects, operation is in safe place.
11, lifted heavy weights, is apart from the ground, no more than 0.5 m distance.
12, hoisting close to full load shall stop at 100 mm height, check brake ability.
13, hoisting process, do not allow to be operated at the same time three institutions (i.e., lift, turn and a winch cannot operate at the same time action).
14, normally reverse operation is not allowed.
15, strictly prohibit the two sets of different payloads cranes to hoist the identical thing. Two same payload of cranes to lift the identical thing, it is certain of making the two cranes vertical lifting . The hoisting weight and sling weight of the sum is no more than two crane hoisting capacity 80% of the total. And the chief engineer or its designated person is present and command to lift.
16, by way of ladder to get through the platform from a crane to another. Not climb or walk along the track.
17, not pile up objects movable or other items. Tools shall be fixed.
18, when the same track on there is two cranes, each other collision is avoided.
19, hooks are empty load, rise over one person height.
20, open operation it shall be fixed after completion.
21, in the treatment of the fault or away from the crane, controller must put in a "0", cut off power supply. No leave from the crane with hanging weights. The car stopped on one cab side, hook up to stipulated height.
22, fill in hand-over records, especially unsafe factors must explain clearly.

Key word: electric hoist, crane, brake

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