Vacuum extruder with herringbone gear

Abstract

The invention discloses a vacuum extruder with herringbone gears, comprising a motor, a transmission mechanism and an operating mechanism, wherein the output shaft of the motor is connected with the input shaft of the transmission mechanism, and the output shaft of the transmission mechanism is connected with the operating mechanism. The vacuum extruder is characterized in that at least one pair of transmission gears of the transmission mechanism is the herringbone gears. The above technical scheme has the following technical effects: helical gear transmission in the prior art is characterized by meshing by one pair of gears, but the herringbone gear is characterized meshing by two pairs of gears; under the condition that other technical parameters are constant, driving torque distributed to each pair of gears is lowered by half, thus greatly improving the stressing condition of each pair of gears, improving the service life and lowering the possibility of faults, such as snaggletooth and the like; gear contact ratio is doubled to ensure stable transmission and improve whole machine operation performance. In addition, because the axial dip angles of the herringbone gear on the transmission shaft are same but have different directions, axial force mutually offsets, therefore, the stressing condition of the transmission shaft is improved, and the service life of the bearing is prolonged.

Description

technical field [0001] The invention belongs to a brick-making machine, in particular to a vacuum extruder whose transmission mechanism adopts a herringbone gear. Background technique [0002] At present, in brick-making machinery, vacuum extruder is the most widely used. The transmission mechanism basically adopts involute helical gears, mainly because the gear meshing degree of this structure is large, the transmission is stable, and the transmission torque is large. However, because the tooth width direction of this kind of transmission gear is oblique to the transmission shaft, in the process of power transmission, the transmission shaft also bears a large axial force in addition to the circumferential force and radial force. Therefore, its two The bearing at the end is in a complex alternating stress state, and excessive axial force can easily cause axial movement of the bearing, which affects its service life and use effect. In addition, due to the poor working condi...

AI Technical Summary

Problems solved by technology

However, because the tooth width direction of this kind of transmission gear is oblique to the transmission shaft, in the process of power transmission, the transmission shaft also bears a large axial force in addition to the circumferential force and radial force. Therefore, its two The bearing at the end is in a complex alternating stress state, and excessive axial force will easily cause axial movement of the bearing, which will affect its service life and use effect

In addition, due to the poor working conditions of the vacuum extruder and the large driving torque required, it often causes the gears to wear too fast or even break, which affects normal production

Images