Crane shift-position control apparatusTechnical field
The utility model is related to crane technologies, the more particularly to technology of crane shift-position control apparatus.
Background technology
In factory, the power of motor of bridge crane is less than or equal to lifting mechanism, traveling mechanism of the larger traveller, the trolley of 30kWOperating mechanism is controlled frequently with cam controller, but cam controller is by for a long time using can cause controller home recordPosition can not be accurately positioned, and influence the accuracy of the operation of drivers' cab driver, and in the market temporarily without with active back to zero bit functionCam controller product can not further increase the safety of driver's operation；In addition, the contact of cam controller is broken downWhen, it needs to remove whole arc-extinguish chambers and just can determine that abort situation, it is not easy to overhaul, and contact aoxidizes and needs because operating current is largerIt often to polish, increase maintenance workload.
Utility model content
The purpose of this utility model is to provide a kind of crane shift-position control apparatus, solves the cam control of current craneDevice does not have active back to zero function, and cam controller was said for a long time using gear in cam controller can be caused not determine accuratelyPosition influences the operation of driver in driver's cabin accurately fixed problem.
The utility model solves its technical problem, the technical solution adopted is that：Crane shift-position control apparatus, including controlCase and signal cable, which is characterized in that further include master controller, the master controller is connected by signal cable and control cabinetIt connects, gear switching device and zero resetting device is included at least in the master controller.
Specifically, the signal cable includes electric wire, plug and socket corresponding with plug.
Further, the control cabinet includes that gear display device, transformer, terminal block, intermediate relay and control connectTentaculum.
Specifically, the zero resetting device is torsional spring resetting-mechanism component.
The utility model has the beneficial effects that by above-mentioned crane shift-position control apparatus, the master of back to zero function will be provided withController is enabled to control the gear of crane, can be as needed in time by gear back to zero, and gear is carried out by control cabinetIt has been shown that, while facilitating and setting by dismountable plug and socket and electrical cable connection between master controller and control cabinetStandby maintenance, improves overhaul efficiency.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model crane shift-position control apparatus.
Specific implementation mode
With reference to the accompanying drawings and embodiments, the technical solution of the utility model is described in detail.
Crane shift-position control apparatus described in the utility model is made of control cabinet, signal cable and master controller,Structural schematic diagram is referring to Fig. 1, wherein master controller is connect by signal cable with control cabinet, is at least wrapped in master controllerInclude gear switching device and zero resetting device.
Embodiment
The utility model embodiment crane shift-position control apparatus, including control cabinet, signal cable and master controller,In, master controller is connect by signal cable with control cabinet, and gear switching device and back to zero are included at least in master controllerDevice.
In above-mentioned apparatus, signal cable preferably includes electric wire, plug and socket corresponding with plug etc.；Control cabinet is preferredGround includes gear display device, transformer, terminal block, intermediate relay and control contactor etc.；Zero resetting device is preferably torsional springResetting-mechanism component.
In actual use, former vehicle cam controller is removed when transformation, in rising for bridge crane driver's indoor location this exampleHeavy-duty machine shift-position control apparatus plugs together the socket of signal cable and plug, while power cable on former cam controller being connected toIn control cabinet on the main contacts of control contactor, when work, the gear action command of master controller is transmitted by signal cableTo control cabinet, the action of intermediate relay and control contactor is controlled, realizes control requirement identical with former cam controller, togetherWhen, the gear information of current master controller is shown by gear display device.