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Analysis of the structure and transmission principle of double-beam bridge crane

by:Powerston     2021-04-25
The double-beam bridge crane has superior performance, compact structure, light weight, safe and reliable operation, and can meet various working conditions. It can reduce the overall investment of the plant, improve production efficiency, reduce maintenance costs, and save operating energy consumption. This article is an analysis of the structure and transmission principle of a double-beam construction hoist. The double-beam bridge crane has superior performance, compact structure, light weight, safe and reliable operation, and can meet various working conditions. It can reduce the overall investment of the plant, improve production efficiency, reduce maintenance costs, and save operating energy consumption. This article is an analysis of the structure and transmission principle of a double-beam construction hoist. 1. The structure of the double-beam construction hoist 1. Bridge frame: It is composed of two main beams and two end beams, walking platform, guardrail and other parts. There are two structural forms: box-shaped and truss; 2. Trolley operating mechanism: composed of electric motors, brakes, reducers, couplings, transmission shafts, angular bearing boxes, wheels and other parts; 3. Starting Heavy trolley: composed of trolley frame, hoisting mechanism and trolley running mechanism; 4. The hoisting mechanism is composed of electric motor, brake, drive shaft, coupling, reducer, drum, fixed pulley group and steel wire rope. . There are single brakes and double brakes; 5. Driver's cab: the place where crane operators work. There are control equipment (linkage table or cam controller), power distribution protection box, signal device and lighting equipment. The crane can only be started after the hatch is closed. In this way, it is possible to avoid personal accidents caused by someone working in the car or driving before the person enters the driver's cab. Second, the transmission principle of the double-beam bridge crane The movement of the bridge-type universal crane is composed of three kinds of movements: the longitudinal direction of the cart, the lateral direction of the cart, and the up and down movement of the hook. 1. Transmission of the hoisting system: the power source of the hoisting mechanism is generated by the electric motor, and the power is transmitted to the high-speed shaft end of the reducer through the gear coupling, the compensation shaft, and the brake wheel coupling, and the speed is reduced After the motor has reduced the high speed of the motor to the required number of revolutions, it is output by the low-speed shaft of the reducer, and the power is transmitted to the drum group through the inner gear ring on the drum, and then lifted and lowered by the hook of the wire rope and the pulley group. , So as to complete the purpose of lifting heavy objects; 2. The transmission of the operating system of the lifting trolley: the power is issued by the motor, and the power is transmitted to the vertical three-stage reduction through the brake wheel coupling, the compensation shaft, and the half-tooth coupling. After the high-speed shaft end of the motor is reduced to the required number of revolutions by the vertical three-stage reducer, it is output by the low-speed shaft of the reducer, and then through the half-tooth coupling, compensation shaft, and half-tooth coupling. The axle is connected with the active wheel shaft of the trolley, thereby driving the rotation of the active wheels of the trolley, and accomplishing the purpose of transporting heavy objects in the horizontal direction of the trolley; 3. The transmission of the trolley running system: the power is issued by the electric motor, through the brake wheel coupling, The compensation shaft and the half-tooth coupling transmit the power to the high-speed shaft end of the reducer, and after the high-speed rotation of the motor is reduced to the required number of rotations by the reducer, the output is output by the low-speed shaft of the reducer, and then through the full-tooth coupling. The axle device is connected with the driving wheel axle of the cart, thereby driving the rotation of the driving wheel of the cart, and accomplishing the purpose of lifting heavy objects in the longitudinal direction of the bridge. The drive mechanism at both ends of the cart is the same. The above is the introduction of the structure and transmission principle of the double-beam bridge crane. If necessary, please contact Hoisting Machinery Equipment Co., Ltd.!
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