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Transmission overdrive gear shaft system device

An overspeed gear and gear shaft technology, applied in transmission parts, gear lubrication/cooling, belts/chains/gears, etc., can solve the problems of limited noise reduction, shaft ablation, etc. The effect of improving bending strength

Inactive Publication Date: 2015-11-18
SHANGHAI AUTOMOBILE GEAR WORKS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this technology still uses needle roller bearings. Although there is an oil tank to increase lubrication, the noise source still exists, and the noise reduction effect is limited. Solve the problem by opening lubricating oil holes and opening lubricating grooves for corresponding shafts

Method used

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  • Transmission overdrive gear shaft system device
  • Transmission overdrive gear shaft system device
  • Transmission overdrive gear shaft system device

Examples

Experimental program
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Embodiment 1

[0020] Such as figure 1 As shown, this embodiment includes: the overdrive gear passive gear 1 and the matching shaft 2, wherein: the overdrive gear passive gear 1 cooperates with the matching shaft 2 with a small gap, so that the driven gear can be suspended and rotated at high speed by the gear oil.

[0021] The gap of the small gap fit is 0.05-0.08 mm.

[0022] The matching shaft 2 is the part where the output shaft cooperates with the overdrive passive gear 1 .

[0023] A lubricating groove 4 is provided on the matching shaft 2 .

[0024] The inner surface of the overdrive passive gear 1 is provided with an oil hole 3 connected with a lubricating groove 4 .

[0025] Such as figure 2 and image 3 As shown, the diameter of the matching shaft is 37.5mm, and the tolerance is 0.015mm.

[0026] Such as Figure 4 As shown, the lubricating groove 4 is a toothed groove.

[0027] The number of teeth in the lubricating groove 4 is 19, and the left helix angle is 22°.

[0028]...

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Abstract

A transmission overdrive gear shaft system device comprises an overdrive driven gear and a matched shaft, wherein the overdrive driven gear and the matched shaft are in clearance fit; a tooth-shaped lubricating groove is formed in the matched shaft; in the work process, oil enters the lubricating groove through oil holes, so that the overdrive driven gear is suspended on the matched shaft. Lubrication of a transmission overdrive gear shaft system can be effectively achieved, working noise is lowered, the number of parts is reduced, the driving comfort of a whole car is improved, and the transmission overdrive noise is reduced to 86 db from 91 db.

Description

technical field [0001] The invention relates to a technology in the field of automobile transmission, in particular to an overdrive gear shafting device of a transmission. Background technique [0002] At present, the transmissions in the field of commercial vehicles (light trucks, light buses, medium trucks, etc.) generally adopt longitudinal transmissions, and are powered by diesel engines. Use overdrive for driving. In the past, the cooperation between the overdrive gear and the pinion shaft inside the traditional longitudinal transmission was carried out by the design method of needle bearing assembly, which would bring about problems such as loud noise, causing discomfort to the driver and the environment. [0003] After searching the existing technology, it is found that the Chinese patent document number CN203926722U, the announcement date is 2014.11.5, discloses a mechanism for increasing gear lubrication and reducing friction, including synchronizers and two-axis o...

Claims

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Application Information

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IPC IPC(8): F16H57/00F16H57/04
CPCF16H57/0018F16H57/0427
Inventor 陈德军杨晔
Owner SHANGHAI AUTOMOBILE GEAR WORKS
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