Hypoid gear transmission mechanism

Abstract

The invention aims to provide a hypoid gear transmission mechanism. On the premise of ensuring enough supporting rigidity and durability, the amount of the lubricating oil and the loss of the transmission friction are reduced; and the hypoid gear transmission mechanism is compact in structure and can meet the requirements on high transmission efficiency and low weight. The hypoid gear transmission mechanism comprises a driving shaft and a driven shaft which are arranged inside a housing and perpendicularly intersected with each other; the driving shaft and the driven shaft are connected through a hypoid gear pair; the hypoid gear transmission mechanism is characterized by further comprising a double-row angular-contact ball bearing which is axially limited in the shaft body of the driving shaft; the outer ring of the double-row angular-contact ball bearing presses against the inner wall of the housing and the inner ring of the double-row angular-contact ball bearing is sleeved onto the shaft body of the driving shaft; and the double-row angular-contact ball bearing is provided with an oil passage for communicating the interior of the double-row angular-contact ball bearing and the interior of the housing. The transmission mechanism is applied to a transmission system structure of an automobile, particularly an all-wheel-drive automobile, can effectively enhance the economy of the automobile fuel oil, and can bring great economic benefit.

Description

technical field [0001] The invention belongs to the technical field of mechanical manufacturing, and in particular relates to a hypoid gear transmission mechanism. Background technique [0002] A pair of alignment hypoid gear pair transmission mechanisms are usually arranged in automobiles to change the torque direction of the engine and realize the torque transmission between the engine and the wheels. The structure of the traditional hypoid gear transmission mechanism is as follows: figure 1 As shown, the driving shaft 10 and the driven shaft 13 mesh with each other at an angle of 90° through a pair of aligned hypoid gear pairs 4 . When the driving shaft 10 receives the torque transmitted from the engine, it drives the driven shaft 13 to rotate to realize the torque conversion transmission, to drive the wheels to rotate, and to pull the vehicle forward or backward. During this process, the driving shaft 10 will bear the reaction force generated when the gear pair 4 meshe...

AI Technical Summary

Problems solved by technology

[0005] To sum up, the above-mentioned hypoid gear transmission supported by tapered roller bearings mainly has the following problems: 1. When the tapered roller bearing is in operation, the rollers are in line contact with the inner and outer rings, and the running resistance is large; 2. The amount of lubricating oil is large, and the kinetic energy lost by churning oil is large; 3. In order to form an oil film more easily, high-viscosity oil is used for lubrication, which increases the resistance of churning oil; 4. Tapered roller bearings are used in pairs, and the middle shaft is used The sleeve is pre-tightened, and the layout space occupied by the transmission mechanism is large, which increases the weight of the device and affects the lightweight of the car.

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