Engineering vehicle wheel-side speed reducer and mining dump truck

Abstract

The invention provides an engineering vehicle wheel-side speed reducer and a mining dump truck. The engineering vehicle wheel-side speed reducer comprise an axle shaft, wherein an axle shaft sleeve isarranged outside the axle shaft, one end of the axle shaft sleeve is connected with a brake mounting plate, the other end of the axle shaft sleeve is connected with a gear ring bracket, the gear ringbracket is connected with a gear ring, a planetary gear is arranged between the gear ring and the axle shaft and connected with a planetary carrier through a pin shaft, and the planetary carrier is arranged on a hub; a box type seal is arranged between the hub and the axle shaft sleeve; a supporting bush is further arranged on the periphery of the axle shaft sleeve, and an annular oil groove is machined in an inner hole of the supporting bush; and a steel ball is arranged in a groove hole in the end of the axle shaft, and a ball top cooperating with the steel ball for use is arranged in the center of an end cover arranged at the end part of the axle shaft. The engineering vehicle wheel-side speed reducer is low in manufacturing and machining cost, has the obvious cost advantage compared with a traditional wet disc brake which is high in production and use cost, and is beneficial to application and popularization of hinged dump truck products in various engineering fields.

Description

technical field [0001] The invention relates to the technical field of engineering machinery dump trucks, in particular to a wheel-side reducer for engineering vehicles and a mining dump truck. Background technique [0002] Articulated dump trucks are mainly used in the transportation operations of mines, water conservancy, ports, and docks. Its technical feature is that the frame is divided into two parts: the front frame and the rear frame. The front and rear frames are connected by the hinge body, which can realize the steering within the left and right swing angles of 45 degrees and the 360-degree rotation of the rear frame relative to the hinge body. The torsional load is almost zero, the turning radius is small, and the maneuverability is flexible. Under certain circumstances, it has its unique application advantages. Due to different usage habits, the purchase cost of vehicles varies greatly. At present, road dump trucks are used instead. However, with the deepening ...

AI Technical Summary

Problems solved by technology

[0004] 1. Integrated wet disc brakes, friction disc replacement procedures are complicated and require high cleanliness, low maintenance efficiency, and poor user experience

[0005] 2. The traditional wet disc brake wheel adopts multi-channel floating seals and skeleton seals to seal the cavity. Under the muddy and harsh working conditions of articulated dump trucks, oil leakage and oil leakage are very prone to occur.

[0006] 3. The production cost and use cost of traditional wet disc brake wheels are high. In some countries and regions with high cost control, articulated dump trucks do not have cost advantages. Reasonable cost reduction is conducive to the promotion and use of products

[0007] 4. The traditional wet disc brake wheel reducer needs to be additionally equipped with a forced cooling circulation system. The addition of a series of cooling parts increases the cost of use, the complexity of the system, and the high risk of failure. At the same time, it makes itself small The space becomes more compact and the maintenance is poor

[0008] 5. The output flange and the inner ring gear of the traditional gearbox are integrated and need to bear the load pressure of the vehicle. Since the ring gear is a thin-walled part, it will be deformed under force, the meshing accuracy of the inner ring gear will deteriorate, and the reliability of the gearbox will decrease.

[0009] 6. Another type of traditional gearbox is a built-in service brake. The brake is installed inside the gearbox. Due to the small space inside the gearbox and slow heat dissipation, the friction pair of the brake continues to heat up during the driving process, which makes the lubricating oil of the gearbox continue to heat up. instead of normal use

Images