power transmission box

Abstract

The invention discloses a power transmission case comprising a case body, an input shaft, an output shaft, a driving gear, a driven gear, a shift clutch, a toggle mechanism and a hydraulic motor. The case body comprises left case body and a right case body, subdivision surfaces of the left case body and the right case body are vertical planes, a bearing seat and an internal spline are arranged in a gear hole of the driving gear, two ball bearings are mounted in the bearing seat, the input shaft is provided with an external spline, the shift clutch is composed of a shift meshing sleeve, a meshing sleeve positioning mechanism and the internal spline of the driving gear, the meshing sleeve positioning mechanism is mounted on the input shaft, the shift meshing sleeve is provided with an internal spline and an external spline, the internal spline of the shift meshing sleeve is meshed with and in axial sliding fit with the external spline of the input shaft, the external spline of the shift meshing sleeve can be meshed with or separated from the internal spline of the driving gear, and the toggle mechanism comprises a toggle cylinder, a fork pull rod and a fork. The power transmission case is simple and reasonable in structure and easy to manufacture, the requirements for high-speed running and low-constant speed operating, running and driving of a rapid multifunctional operating vehicle are met.

Description

technical field [0001] The invention relates to a track maintenance machine, in particular to a working condition changing power transmission box of an engineering vehicle. Background technique [0002] Track maintenance machinery - fast multi-functional comprehensive operation vehicle, is a professional equipment for overhaul, maintenance and emergency repair of catenary of electrified railway and high-speed passenger dedicated line, and a railway engineering vehicle that can also be used for inspection and maintenance of lines, bridges and other facilities. [0003] With the rapid development of my country's high-speed railway during the "Eleventh Five-Year Plan" period, the mileage has reached more than 10,000 kilometers so far. Especially since the opening of the Beijing-Shanghai high-speed railway, catenary accidents have occurred frequently, and the catenary has been quickly repaired and rescued. Ensuring that passenger trains run on time will be a top priority. Domest...

AI Technical Summary

Problems solved by technology

[0007] There are mainly two foreign companies, STIEBEL and OMSI, which produce power transmission boxes, which are mainly used in construction vehicles, municipal sanitation vehicles, fire-fighting vehicles, etc., and there is no product in their product series that fully meets the technical requirements of the newly developed fast multi-functional operation vehicle; and At present, there is no mature product in China that meets the working conditions of this model's power transmission box.

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