What are Frequent Used Safety Protection Devices of Gantry Crane?
 
Safety protection devices are necessary to keep fluent running for gantry crane. If there is any fault or danger, safety device can alarm workers in time and stop automatically to prevent injury. Thus, damage, delay and even endanger life will be avoid. Therefore, it is a must to design and install relative safety protection devices.
 


 
1.Rise Position Limiter
When the lifting mechanism is started, spreader will work within a scope of height.
 
2.Running Position Limiter
If trolley or crane moving mechanism run to a limit position of its stroke, the running position limiter will control to stop the running to protect cranes working in a stated service area.

3.Deviate Adjusting Device
Running speed of outriggers may be influenced by below factors:
A.Different running resistance of both outriggers.
B.Wheel slip.
C.Different wheel diameters.
D.Working efficiency of drive system.
E.Installation deviation of running mechanism.
Any reason may give a result of out of order of metal structure of gantry crane, even it may lead the crane out of track. More serious, running mechanism will not work and cause operation accidents. Deviate adjusting device will avoid or decrease the probability of these cases.

4.Bumper
Bumper can decrease kinetic energy when gantry crane collides against end dam-board or one gantry crane suddenly meets against another gantry crane.

5.Anti-wind and Anti-creep Mechanism
As for anti-wind and anti-creep mechanism for gantry crane, mainly it means rail clamping device, anchoring device and steel shoes.
5.1 rail clamping device 
Rail clamping device can keep the gantry crane not slide at random to promise anti wind. If owner of gantry crane want to keep it in reliable anti wind, it is necessary to promise the jaw with enough clamp force.
5.2 Brake shoes
Brake shoes can be divided into manual control and electric control.
5.3 Anchoring device
It always includes chain and bolt board type.

6.Load lifting limiter
Load lifting limiter can prevent overload operation. It can stop gantry crane move toward unsafe place but it can also allow travel to a safe direction and alarm with light and sound.

7.Over Speed Switch
Over Speed Switch of a gantry crane is here to limit the max speed and turn off circuit quickly, so that the gantry crane will run in right order.

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Gantry Crane, Overhead Crane, Bridge Girder Launcher, Girder Transporter, Concrete Batching Plant, Concrete Mixer and etc.
 
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