What is the function of crane limit switch?crane overload limiter ?
As an important lifting equipment in industrial production,
metallurgical technology and mechanical equipment, the safety and
reliability of the crane is also high. For the sake of safety, safety
switch will be set on the crane cart, while trolley, main hook are set
with safety limit switch and electromagnetic lock system, these measures
effectively protect the safe operation of the crane.
The overload limit switch
of the crane includes beam, trolley, main hook and other limit
switches, among which the direct motion travel switch is connected or
disconnected by moving objects colliding with movable parts to realize
the unimpeded circuit. In the process of work, the crane is not always
in the starting state, belongs to intermittent machine, non-stop start
or stop, so in the lifting mechanism of the crane, operating mechanism,
rotating mechanism are equipped with a specific braking device, so as to
prevent the crane from safety accidents.
The programmable
controller in the crane is the control core of the crane, in charge of
the main command controller, limiter, switch buttons and other open and
disconnect. Considering that the car bump rule touches the limit switch
to make the motor power off and brake, the car has to go a section of
braking stroke, so the trolley limit switch position to install
appropriate. The driving device of the trolley is driven, braking,
transmission combined with the three effects of the driving device, its
advantages are compact structure, its weight is relatively light, the
device is light and convenient, running is also relatively stable and
reliable, the only disadvantage is that this kind of mechanism is more
time-consuming and laborious, maintenance is a little difficult.
if you have any demand for the sensor and limiter for crane,hoist,please fell free contact with mksensor ,we will be glad to support you all the time. to be your reliable partner is our pursuit and honor.