Rapid reversing gear transmission device

Abstract

The invention discloses a rapid reversing gear transmission device which is composed of an advancing input shaft, an output shaft, a reversing input shaft, an intermediate shaft, straight-tooth cylindrical gears, straight-tooth bevel gears and a plurality of bearings. The intermediate shaft, the advancing input shaft, the output shaft and the reversing input shaft are arranged at 90 degrees, and the multiple straight-tooth cylindrical gears are arranged on the advancing input shaft, the reversing input shaft and the output shaft correspondingly. Through a simple sliding key and shaft structure, the engaging and disengaging states between gears on the advancing input shaft and the reversing input shaft and a gear on the output shaft are controlled, so that the requirement for steering change of the output shaft during reversing is met. The four straight-tooth bevel gears are fixed at the ends of the advancing input shaft, the reversing input shaft and the intermediate shaft correspondingly, the output rotating speed during reversing is higher than the rotating speed during advancing by using the four bevel gears with different tooth numbers, and the purpose of increasing the rotating speed during reversing is achieved. By adopting the sliding key structure, the characteristics of small occupied space, low manufacturing cost and high reliability are achieved.

Description

technical field [0001] The invention relates to the technical field of mechanical transmission design, in particular to a gear transmission device capable of realizing fast reverse. Background technique [0002] The reversing mechanism refers to the mechanical transmission mechanism that can switch from the forward working state of the machine to make the machine work in the reverse direction. With the development of machinery industry, more and more machines require not only forward output torque, but also reverse output torque. For example, there is a reversing mechanism in the transmission of a car, which allows the car to drive in the opposite direction after switching the reverse gear; the transmission in the washing machine can make the washing machine rotate forward or reverse. [0003] The traditional reversing mechanism is to add a gear in the middle of the gear pair of the gearbox working when the car is running, so as to change the steering of the output shaft, s...

AI Technical Summary

Problems solved by technology

[0003] The traditional reversing mechanism is to add a gear in the middle of the gear pair of the gearbox working when the car is in front to achieve the steering change of the output shaft, so as to meet the requirements of the car reversing, but this kind of transmission scheme has a defect, that is, the speed when reversing cannot be changed. Because adding an idler gear to the gear pair does not change the transmission ratio of the entire gear transmission system, it cannot meet the requirements of fast reverse

[0004] Invention patent CN209539982U discloses "a high-power forward and reverse gear transmission for ships", which is characterized by strong maneuverability and fast reversing requirements. However, since the transmission system is oriented to the shipbuilding industry, multiple friction clutches are required and the structure is complicated. It needs to take up a lot of space, and the economy of this solution is obviously low

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