Gantry crane installation preparation and precautions instructions
A:gantry crane construction preparation
Gantry crane is a horizontal bridge set in the two legs form a gantry crane. This type of crane operates on ground orbits and is mainly used for handling and installation in open storage facilities, docks, power stations, ports and rail terminals. In order to improve the gantry crane installation time, what needs to be done before installation?
As shown in Figure 1, to check the completeness of the fittings and electrical system, and to prepare the required wood;
2, lay the foundation, the low to do a smooth compaction, the relevant specifications to meet the acceptance criteria of the construction unit;
3, check the track girder, straightness, leveling and other measurements;
4, do a good job in the construction of personnel documents inspection work;
5, related tools, installation of technical documents, personal safety assurance in advance of preparation;
6, issued a written notice of commencement;
7, check the integrity of equipment;
As shown in Figure 8, the construction of power supply, lighting equipment installation and installation work.
B:gantry crane operation method
1, lifting heavy objects, the hook rope should be kept vertical, oblique objects were not allowed to be hanging.
2, heavy objects should be found center of gravity, and tied tightly. An acute angle pad pad is good.
3, in the heavy objects are not suspended from the ground, the crane shall not do slewing motion.
As shown in Figure 4, when lifting or lowering heavy objects, the speed should be even and smooth, to avoid rapid changes in speed, causing heavy objects to swing in the air and be dangerous. Fall heavy objects, the speed should not be too fast, so as not to fall when landing heavy objects.
5, lifting the crane case, try to avoid the boom. When hoisting the boom, it must not lift more than 50% of the specified weight.
6, Crane lifting in the case of rotation, should pay close attention to whether there are any obstacles around, if there are obstacles should try to avoid or clear.
7, Crane boom can not have staff stay, and try to avoid the passage of personnel.
8, two cranes working on the same track, the distance between two machines should be greater than 3 meters.
9. When two cranes hang an object, the lifting capacity shall not exceed 75% of the total lifting capacity of the two cranes. The two cranes should be traveling and the lifting and lifting actions should be consistent.
10, lifting, luffing ropes need to be checked once a week, and make a record of the specific requirements of lifting rope according to the relevant provisions of the implementation.
11, empty car or slewing, the hook to be more than 2 meters from the ground.
12, when the wind exceeds six, should immediately stop working.TMK should be the arm to the wind direction and appropriate low, the hook hanging prison. Gantry crane to lay iron wedge (rail), and the hook up to the ceiling. At the same time shut the windows and doors, cut off the power, pull the cable rope. Usually after the work should be handled accordingly.
13, crane platform forbidden to pile up miscellaneous objects, to prevent fall injuries in operation, often used tools should be placed in the operating room dedicated toolbox.
14, in operation, are not allowed to suddenly change speed or reverse the car, so as not to cause heavy objects swinging in the air, not allowed to start at the same time more than two (including vice hook) operating mechanism.
15, driving, the operator's hand must not leave the controller, sudden failure in operation, measures should be taken to safety heavy landing, and then cut off the power, repair. Do not overhaul and maintenance in operation.
C: gantry crane precautions
As shown in Figure 1, the weight exceeds the rated lifting capacity of the crane.
2, heavy weight is unknown.
3, the signal is unknown.
As shown in Figure 4, heavy objects are not firmly bundled.
5, open operation case six (beam five) over the strong winds and heavy rain, fog and other harsh climate.
6, nighttime operation lighting is not good.
7, cable pull.
8, serious wear and tear of wire rope broken stock and someone on the crane or engine room for overhaul.