What are the safety devices for automated Overhead crane

What are the safety devices for automated overhead crane?


In order to ensure safe and reliable lifting operations, automated overhead crane equipped with better safety devices,So that in the event of an accident,play to protect the machine or to remind the operator attention,thus play the role of security protection.


1.Hydraulic system in the relief valve:It is possible to suppress an abnormally high voltage in the circuit,In order to prevent damage of hydraulic pump and motor, and to prevent in a state of overload.

2.Boom luffing safety device: when the unexpected accidents happens, boom luffing cylinder circuits of high pressure hose or blowout or cut off.The hydraulic circuit in the balance valve has the effect,Locking the working oil from the lower chamber of the cylinder, so that the crane will not fall, so as to ensure the safety of the operation.

3.Telescopic crane boom safety device:when unexpected accident occurs, the boom telescopic cylinder circuit in the high-pressure hose or tubing burst or cut off, the hydraulic circuit in the balance valve on the role.

4.Height limit device: lifting hook to a specified height, the touch limit hammer, open the limit switch, "over-around" indicator light is on, and cut off hook lift, boom out,to ensure safety operating.At this time as long as the control hook down, boom retraction or boom up (ie to the safe operation) handle,so that the limit weight to lift the restraint, the operation is back to normal.In special cases, such as still need to make a small amount of bypass operation, you can press the release button on the instrument box, then the role of the limit will be lifted, but this time the operation must be very cautious to prevent accidents.

5.Outrigger locking device: When an accident occurs, leading to the outrigger vertical cylinder high-pressure hose or tubing rupture or cutting,Hydraulic system in the two-way hydraulic lock can block out the two legs of the cylinder pressure oil, so that the legs do not shrink or thrown out, thus ensuring the safety of lifting operations.

6.Lifting indicator: The lifting indicator is located on the side of the base arm (ie, on the right side of the operating room), the operator can clearly observe the position in the control room.Can accurately indicate the elevation of the boom and crane under the corresponding conditions allow the rated lifting capacity.

7. Lifting characteristics table: set in the control room on the front side of the next wall, the table lists a variety of arm length and a variety of work under the rated lifting capacity and lifting height,so that when the operation reference.When the automated overhead crane operation, must not exceed the values specified in the table,In order to ensure safe and reliable lifting operations, automated overhead crane equipped with better safety devices,In case of accidents, to protect the parts or to remind the operator attention, play a role in security protection.