Wheel mounted drive axle with built-in wet brake

Abstract

The invention provides an assembly type drive axle of a built-in wet type brake wheel edge. A planet carrier supports a planet pinion shaft with a planet wheel, an annular gear is arranged outside the planet wheel, an output shaft is connected with the planet carrier, a box type oil seal is arranged on an installation stopping opening between the outer side of a brake shell body and the inner side of a hub, two inclined grooves which incline by 20 degrees are formed in the positions, close to the box type oil seal, of the inner side of the hub respectively, a driving piece and a driven piece are sequentially arranged between a pressing plate and a piston in the axial direction in a spaced mode, arc-shaped lug seats and square lug seats are evenly distributed in the outer circumferential direction of the driven piece, and notches which are matched with the lug seats are formed in the inner wall of a brake hub body. The assembly type drive axle has the advantages that the assembly type drive axle is simple in structure, braking is conducted on the hub with the low rotating speed so that the heat generated in the braking process can be greatly reduced and the reliability of the drive axle can be improved, a detection hole is formed so that the abrasion condition of the driving piece and the driven piece can be detected at any time, replacement can be timely conducted and driving safety of a vehicle can be ensured, and a planetary reducer is of an assembly type so that machining can be conveniently conducted, the maintenance performance can be good and the problem that maintenance can not be conducted in remote areas without special tools can be solved.

Description

technical field [0001] The invention relates to a driving axle for construction machinery, in particular to a built-in wet brake wheel-side assembled driving axle. Background technique [0002] At present, the operating conditions of most construction machinery are relatively harsh, and operations such as shifting gears and moving forward and backward are frequently performed during the working process, which causes serious loss of the braking system and generates a lot of heat; the weight of each component of the wheel assembly, The volume is relatively large, it is not easy to process, and the maintainability is poor, especially in remote areas, where there is a lack of special tools, disassembly and maintenance are more difficult. Compared with dry brakes, wet brakes have the advantages of good heat dissipation, long service life, safe and reliable braking, etc., and have been widely used in existing construction machinery. The prefabricated wheel rim divides several lar...

AI Technical Summary

Problems solved by technology

The planetary gear carrier of the drive axle is made of four planetary shafts and the output shaft as an integral forging, which requires high forging technology; the shape and position tolerance requirements of the four planetary shafts of the planetary carrier are very high, and the processing is very Difficult; the weight of the planetary gear frame reaches 60 to 70 kg, which is very heavy, and corresponding tools are required for disassembly and maintenance, especially in remote areas.

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