In the wire drawing machine, the reducer is installed under the roller. The space is relatively narrow and the ventilation is poor. After the production line is started, it works continuously. Only when the line is changed, there will be a short pause, so the temperature of the reducer is high; Because the first two rollers of the wire drawing machine have uneven steel wires, the reducer must bear the impact load; The reducer only operates in one direction. It belongs to long-term heavy load working condition.
At present, the reducer used on the linear wire drawing machine unit is a general industrial reducer. The reducer is a three-stage reducer of gear+spiral bevel gear+gear combination, which is designed to allow two-way operation. The reducer has the following advantages: product standardization, good economy and interchangeability. In order to meet the working conditions of linear wire drawing machine, it is necessary to optimize the design of gear, spiral bevel gear, input shaft, output shaft, contact area adjustment of spiral bevel gear, installation clearance of taper bearing bearing, cleanliness of reducer and other factors affecting the reliability of reducer; Only then can finally achieve the operation reliability target of the linear wire drawing machine unit.
Because the reducer operates in a single direction, we can change the spiral angle rotation direction of the spiral bevel gear to ensure that the concave surface of the spiral bevel gear shaft is the working surface, and the convex surface of the spiral bevel gear is the working surface. When the two wheels mesh, the axial forces borne by the two gears point to their respective big ends, and the tooth backlash is increasing. The gear teeth will not jam, which is safer. The installation of tapered roller bearing of spiral bevel gear is changed from clearance installation to preload installation to enhance the rigidity of the bearing and improve the service life of the bearing. The shaft head of the spiral bevel gear shaft is fixed by a snap ring and pressed by a nut; Ensure preload control of tapered roller bearing.
WPDZ70,WPDZ80,WPDZ100,WPDZ120,WPDZ135
