Safety protection device for wire rope drum of bridge crane
A technology of safety protection device and wire rope reel, which is applied in hoisting device and clockwork mechanism, etc., can solve the problems of high failure rate of equipment, tedious adjustment, non-stop rotation of reel, etc., so as to improve operation reliability, adjust Simple, high-resolution effects
Active Publication Date: 2016-08-24
XINXING DUCTILE IRON PIPES CO LTD
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Problems solved by technology
The operation of the hoisting mechanism must be within a controllable range. If a fault occurs and the motor cannot operate normally, the reel will rotate continuously, and the winding wire rope will drive the hook to rise or fall continuously. When it rises to the bridge, a fault will occur , the top damages the crane equipment; if the fall is too high, the steel wire rope will be reversed, which will also cause equipment damage and major accidents.
[0003] At present, the general-purpose drum protector is a mechanical shaft head limiter. In actual operation, the equipment failure rate is often high due to vibration, contact burnout, poor contact closure, and shaft wear, which makes the crane unable to work normally. operation, and the mechanical shaft head limit control accuracy is low and the adjustment is cumbersome, so that the bridge-type double-girder crane cannot achieve the purpose of stable and reliable operation, affecting the normal operation of production, and the workload of equipment maintenance is large
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[0018] like figure 1 and image 3 As shown, a multi-point stroke limiting device 5 is installed on one side of the wire rope drum 4, and the multi-point stroke limiting device 5 includes an encoder 6 and a PLC controller 1 capable of determining the operating position of the hook. The wire rope drum 4 Connect with encoder 6 through flexible coupling, the output end of described encoder 6 is connected with the input end of PLC controller 1, the output end of described PLC controller 1 is connected with the input end of frequency converter 2, and described frequency conversion The output end of the device 2 is connected to the motor 3.
[0019] The PLC controller 1 is also connected with a data display 9, and the data display 9 is located in the cab 10. In the cab 10, a master controller for controlling the lifting of the motor 3 is also provided. The operating positions include: lower limit and upper limit positions. The order of the operating positions from bottom to top inc...
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The invention discloses a safety protection device of a wire rope reel of a bridge crane, and relates to the technical field of bridge cranes. A multipoint route limit device is arranged on one side of the wire rope reel, and comprises an encoder capable of determining the operation position of a lifting hook and a PLC. The wire rope reel is connected with the encoder through a flexible coupler, the output end of the encoder is connected with the input end of the PLC, the output end of the PLC is connected with the input end of a frequency converter, and the output end of the frequency converter is connected with a motor. The safety protection device automatically controls the wire rope reel, and is high in control precision, and safe and reliable in operation.
Description
technical field [0001] The invention relates to the technical field of bridge cranes. Background technique [0002] Bridge crane is an important tool and equipment to realize the mechanization and automation of production process in modern industry and lifting transportation. It is widely used in industrial and mining enterprises, iron and steel chemical industry, port terminals and logistics turnover and other departments and places. The bridge crane is composed of bridge frame, lifting mechanism, walking mechanism and electrical equipment. The lifting mechanism is an important mechanism to realize the lifting of materials without being hindered by ground objects and flexibly transfer the position of materials. The lifting mechanism is installed on the traveling frame. , the electric motor and the reducer drive the reel wound with the steel wire rope, and the lifting of the hook is realized through the forward and reverse rotation of the electric motor, and the lifting and ...
Claims
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IPC IPC(8): B66D1/54
Inventor 李宏伟
Owner XINXING DUCTILE IRON PIPES CO LTD