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A drive axle half shaft for a vehicle

A technology for driving axles and vehicles, which is applied in the direction of axles, shafts, wheels, etc. It can solve the problems of poor heat dissipation of wheel end mechanisms, high temperature oil and gas, short service life, and many failures of wheel end mechanisms, achieving good cooling effect and low cost , making convenient effects

Active Publication Date: 2019-01-04
DONGFENG COMML VEHICLE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the existing wheel end mechanism has poor heat dissipation and easy to generate high temperature oil gas, which leads to more faults and short service life of the wheel end mechanism, and provides a method that can effectively reduce the internal temperature of the wheel end mechanism and prolong the wheel end mechanism. The drive axle half shaft of the vehicle with the service life of the mechanism and its surrounding components has a simple structure, low cost, mature technology, convenient manufacture, and has a significant effect on the heat dissipation and cooling of the wheel end mechanism

Method used

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  • A drive axle half shaft for a vehicle
  • A drive axle half shaft for a vehicle
  • A drive axle half shaft for a vehicle

Examples

Experimental program
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Effect test

Embodiment 1

[0035] see figure 1 , image 3 , the drive axle half shaft for a vehicle of the present invention is also called the half shaft for a wheel-side reduction axle, and includes a shaft body 41 and splines 42 located at both ends of the shaft body. The outer circular surface of the shaft body 41 is provided There is a helical structure 8, and the direction of rotation of the helical structure 8 is determined by the rotation direction when the shaft body 41 drives the driving axle and the vehicle forward and the direction of the fluid in the helical structure 8 flowing to the final drive side according to the left and right hand rules . That is, the direction of rotation of the helical structure 8 is determined by the direction of rotation of the axle shaft 4 and the direction in which the helical structure delivers lubricating oil when the wheel on the drive axle rotates forward. as in image 3 Among them, the half shaft 4 on the right side of the final drive 1 is the right ha...

Embodiment 2

[0047] see figure 2 , image 3 , the vehicle drive axle half shaft is a semi-floating half shaft 4 on the right side of the oil-lubricated drive axle, and the half shaft 4 includes a shaft body 41, a key joint at one end of the shaft body and a flange 43 at the other end of the shaft body , the key connection part is a spline, and a helical structure 8 is provided on the outer surface of the shaft body 41. The double-headed spiral rib on the outer surface, the spiral rib is set on the side near the wheel end in the middle of the half shaft 4, and the spiral rib is fixed on the outer surface of the shaft body 41 by bonding Copper metal wire, the diameter of the wire, that is, the height of the spiral rib is 2 mm, generally controlled below 4 mm, and the cross-sectional shape of the spiral rib is circular, or rectangular, conical. shape, trapezoid or semicircle. Other structures of this embodiment are basically the same as those of Embodiment 1.

Embodiment 3

[0049] see figure 1 , image 3 , the vehicle drive axle half shaft is the full floating half shaft 4 on the right side of the wheel reduction axle, including the shaft body 41 and the splines 42 located at both ends of the shaft body 41, which are arranged on the outer circular surface of the shaft body 41 A helical structure 8 is provided, the direction of rotation of the helical structure 8 is left-handed, and the helical structure 8 is a single-headed helical groove hovering on the outer surface of the shaft body 41, and the helical groove is arranged on the half shaft At the corresponding length position of the shaft body 41 on the shaft tube 6 and the shaft tube 6, the cross-sectional shape of the spiral groove is a semicircular groove, or a rectangular groove, a tapered groove or a trapezoidal groove.

[0050] The depth of the spiral groove is about 1-4 mm, generally controlled below 4 mm, and it should be ensured that the maximum outer diameter of the spiral groove is...

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Abstract

A half shaft of a drive axle for a vehicle, which belongs to the half shaft used for a drive axle of an oil-lubricated structure, comprising a shaft body (41) and key joints located at both ends of the shaft body (41), or including a shaft body (41), located at The key joint at one end of the shaft (41) and the flange (43) at the other end of the shaft (41), the outer surface of the shaft (41) is provided with a helical structure (8), and when the shaft (41) When the wheel hub (7) and the vehicle are driven forward to rotate, the helical structure (8) conveys the lubricating liquid to the side of the final reducer (1). The structure is simple, the design is novel, and the production is simple and convenient. It can keep the oil volume of each cavity stable and ensure that all parts are fully lubricated. Especially, the effect of exhausting oil and gas and cooling the wheel end mechanism (2) is good, effectively prolonging the use of the drive axle system. It can be applied to all oil-lubricated vehicle drive axles.

Description

technical field [0001] The invention relates to a drive axle half shaft, in particular to a vehicle drive axle half shaft with an oil lubricating structure at the wheel end. Background technique [0002] The drive axle is at the end of the power train, and the torque from the engine is transmitted to the drive wheels through the drive axle to realize the rotation of the wheels. For single-stage drive axles, oil lubrication is mainly used for wheel end bearings. For wheel-side reduction drive axles, both hub bearings and wheel-side reducers need to be considered for oil lubrication. [0003] Existing drive axles such as the wheel side reduction drive axle of Dongfeng Commercial Vehicle Co., Ltd., such as Figure 4 , mainly including final reducer 1, wheel end mechanism 2, drive axle housing 3, half shaft 4, driven bevel gear 5, shaft tube 6 and wheel hub 7, said final reducer 1 includes driving bevel gear and driven cone The gear 5 and the driven bevel gear 5 are spiral beve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60B35/14
CPCB60B35/14F16H57/0428F16H57/0483F16C3/02F16H57/04F16N7/18F16H57/0427F16H57/0493
Inventor 刘春立陈永华蒋鸣刘金胡凯刘伟邢红岩张红星
Owner DONGFENG COMML VEHICLE CO LTD
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