Hydraulic-hydraumatic comprehensive driving axle gear box

Abstract

The invention discloses a hydraulic-hydraumatic comprehensive driving axle gear box for a high-speed railway maintaining vehicle. The hydraulic-hydraumatic comprehensive driving axle gear box comprises a box assembly, a motor input spline shaft assembly, an input gear shaft assembly, a middle shaft assembly, an output shaft assembly, a gearshift assembly, a pull arm assembly, a lubricating system, a sealing structure and an aerator, wherein the box assembly comprises a box cover, an upper box body and a lower box body; the motor input spline shaft assembly and the input gear shaft assembly are mounted and supported on a bearing base hole between the box cover and the upper box body and are provided with the same first axis; the middle shaft assembly and the output shaft assembly are mounted and supported on the bearing base hole between the upper box body and the lower box body; a second axis of the middle shaft assembly and a third axis of the output shaft assembly are both located in a lower subdivision part and are vertical to each other; the second axis is parallel to the first axis and is deviated for a distance S; one end of the middle shaft of the middle shaft assembly extends out of the box assembly. The hydraulic-hydraumatic comprehensive driving axle gear box has compact layout, reasonable structure and capability of realizing the conversion of two driving modes.

Description

technical field [0001] The invention relates to a rail vehicle power transmission device, in particular to a driving axle gearbox of a high-speed railway maintenance operation vehicle. Background technique [0002] High-speed railway maintenance operation vehicle——rapid catenary comprehensive operation vehicle is a professional equipment for overhaul, maintenance and emergency repair of electrified railway and high-speed passenger dedicated line catenary, and a railway engineering vehicle that can also be used for inspection and maintenance of lines, bridges and other facilities. With a maximum operating speed of 160km / h, it can quickly reach the job site. The vehicle is equipped with catenary detection device, wire lifting device, lifting and rotating operation platform, aerial work bucket and other equipment. [0003] With the rapid development of high-speed railways in my country, the speed of existing railways has been increased to 160-200km / h on a large scale, and larg...

AI Technical Summary

Problems solved by technology

In the existing vehicle technology for engineering maintenance work, when running at high speed, it is hydraulic transmission, and when running at low speed, it is hydraulic transmission. The two sets of power systems use different drive axle gearboxes for high and low speeds. The axle gearboxes mainly have the following Disadvantages and deficiencies: ①It can only adapt to a single transmission mode. Therefore, in order to adapt to different operating conditions, different power transmission modes use different axle gearboxes for driving, and axle gearboxes with different functions need to be installed in the vehicle, resulting in The power transmission system of the vehicle is more complicated, the reliability of the system is reduced, the weight of the vehicle is increased, the cost is high, and a lot of space in the vehicle body is wasted

②The maximum driving speed is basically about 100km / h, and a few can reach 120km / h; in the case of more and more concentrated transportation capacity and faster and faster operation speed of the current line, it is bound to affect the operating efficiency of the line to a certain extent, especially Cannot meet the requirements of high-speed railway and passenger dedicated line

③Axle gearbox occupies a large space on the bogie, so there is no space to install the axle-disk foundation brake device required for high-speed vehicle braking, which limits the increase in vehicle speed

[0006] After patent search, no axle gear box suitable for both hydraulic and hydraulic power transmission modes was found, which is suitable for rapid catenary comprehensive operation vehicles; therefore, a traction suitable for rapid catenary comprehensive operation vehicles at high and low speeds has been developed. drive, and the axle gearbox that can realize the transformation of power transmission mode has important practical significance

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