double hook bridge crane
The main components of double hook crane design features a main lifting motor selection and calculation.
Main lifting motor selection and calculation, mainly consider the following three aspects: one is calculated according to the maximum net power lifting speed is two, according to the lifting mechanism at the working level to determine the motor's working system, three is the range according to the lifting speed selection of motor model.
Two, the main design of the hoisting gear
Main lifting driving device comprises a motor, brake, reducer, drum device, wire rope, bearing seat and the shaft and other components, in addition to the main controller, which can control the lower limit position, in order to meet the design requirements, the load control device is arranged in the reel bearing under overload may rise load control and display the process of lifting the weight and overload alarm and cut off the power supply function. The reel device cancels the open gear, and the low speed shaft of the reducer is connected directly with the reel shaft. The structure is simple and compact, and it is safe and reliable. The movable pulley shaft pulley of the chrome handle, while the bridge machine for the brake distance and there are strict requirements, which is the limit switch safety lifting mechanism on location setting, should ensure that after a power outage at least no load hoisting braking distance and not less than 200 mm 4 times.
The design of three car walking mechanism
Trolley traveling mechanism design, calculation, comparison and demonstration, using four 500mm diameter wheels, two driving wheels and two driven wheel group, a driving wheel group with yzr112m-6 and qs10-10 as reducer drive, simple and reliable structure, convenient installation and maintenance. At the end of the car running mechanism, there are iron and buffer. The buffer can absorb the kinetic energy when the car collides with the iron block, so as to organize the car to deviate and reduce the impact. In addition, there is also a small city travel limit switch, to ensure that the car runs to the limit position, automatically cut off the power, and send a warning signal., four small frameSmall frame two along the trolley track end beams and five perpendicular beams rigid welded. The end beam is supported on the bearing of the wheel. The pads and bases are welded on the surface of the small frame, and the motors, brakes, reducer and bearing blocks are all mounted on the backing plate and the base. After the plane welding process on the backing plate and the base, the difficulty of installation and adjustment is reduced. Considering the transportation problem, small frame design for the two groups, segmented after shipment, site installation with high strength bolt connection.