CN203009551U

CN203009551U - CA 142 vehicle gearbox split type intermediate shaft

Info

Publication number: CN203009551U
Application number: CN 201320027150
Authority: CN
Inventors: 谭富春; 王伟
Original assignee: QIJIANG DALISHEN GEAR CO Ltd
Current assignee: Qijiang Chongqing source electromechanical Co., Ltd.
Priority date: 2013-01-18
Filing date: 2013-01-18
Publication date: 2013-06-19
Anticipated expiration: 2023-01-18

Abstract

The utility model discloses a CA 142 vehicle gearbox split type intermediate shaft, wherein a first gear, a second gear and a third gear are arranged on a shaft body; the first gear, the second gear and the shaft body are manufactured in a split type mode and are connected to form an integrated structure by means of interference fit; and the third gear, a fourth gear and the shaft body can either be manufactured integrally or be connected to form an integrated structure by means of interference fit. According to the CA 142 vehicle gearbox split type intermediate shaft, two big gears are manufactured independently, only small gears are manufactured on a transmission shaft at the same time, and a transmission gear shaft with two gears is formed; machining difficulty of the transmission gear shaft is greatly reduced, manufacturing processes of the transmission gear shaft are simplified, and the percent of pass of the transmission gear shaft is increased; size accuracy and machining accuracy of the transmission shaft are improved, and manufacturing and production cost of the transmission shaft is effectively reduced; if the two big gears or the shaft body are bashed and can not be used, only the damaged gears or the damaged shaft body needs to be replaced, other parts can be used repeatedly, and overall replacement is not needed.

Description

CA142 automobile gearbox Split type middle shaft

Technical field

The utility model relates to a kind of transmission shaft of vehicle gear box power transmission system, especially the split type intermediate propeller shaft of CA142 automobile gearbox.

Background technique

Gearbox (the Jiefang brand automobile of a vapour) at CA142 is provided with input, output and jack shaft, by the engagement between different shifting gears on it, forms different velocity ratios, to satisfy the gearbox transferring power, to form the transmission needs of each gear; On jack shaft, need according to transmission speed, gear is set according to the gear number, the diameter of its bootom gear is less, and general that diameter is less three or four design of gears become overall structure, to satisfy the technique needs.The transmission shaft of prior art, four gears of its three fire and transmission shaft are integral structures, just make all-in-one-piece during making, are monolithic constructions.As shown in Figure 1, being provided with the diameter of the first gear 2, the second gear 3, the 3rd gear 4 and the 4th gear 5, the first gears 2, the second gear 3 greater than the diameter of the 3rd gear 4 and the 4th gear 5 on axle 1, is two gearwheels; The first gear 2, the second gear 3 and the 3rd gear 4, the 4th gear 5 all are made into one with axle 1.The deficiency of this kind structure be following some: 1, preparation process is very complicated, and difficulty is higher, and the reject rate during making is higher; Because axle and gear are all important power-transmitting parts; the dimensional accuracy of itself and machining accuracy all require very high; and usually also need heat treatment to improve its hardness etc.; cause the location that adds man-hour, clamping etc. very complicated; very difficult; easily produce waste product in whole course of working, obviously increase the fabricating cost of axle.2, in use, gear is easily broken as easily worn part, and in case wherein any one gear in use broken and can not be used, perhaps axle is compromised and can not uses, all can only integral replacing, whole axle all scrapped, change new transmission shaft; This kind structure has obviously increased user's user cost, and the user is unsatisfied.

The model utility content

For the problems referred to above that prior art exists, the utility model provides a kind of split type making, reduction difficulty of processing, reduces the CA142 automobile gearbox Split type middle shaft of fabricating cost.

To achieve these goals, the utility model adopts following technological scheme: CA142 automobile gearbox Split type middle shaft, comprise axle, it is characterized in that, be provided with the first gear, the second gear and the 3rd gear on axle, interference fit between the first gear and the second gear and axle, the formula that links into an integrated entity structure, both can be made into one between the 3rd gear and the 4th gear and axle, also can coordinate through interference, the formula that links into an integrated entity structure.

Further feature is, shoulder block is set on axle, and the external diameter of shoulder block is greater than the internal diameter of the second gear that contacts with it.

Compared to existing technology, the utility model intermediate propeller shaft has following beneficial effect:

1, two gearwheels are made separately, only small gear are produced on transmission shaft simultaneously, form the driving gearshaft with a gear; The difficulty of processing of decrease driving gearshaft is simplified its preparation process, improves the up-to-standard rate of driving gearshaft.

2, improve dimensional accuracy and the machining accuracy of transmission shaft.

3, effectively reduce the making processing cost of transmission shaft, strengthen its market competitiveness.

4, in use, if two gearwheels are broken and can not use, only more gear changing gets final product, and axle can use, and axle need not be scrapped; If axle and small gear are broken and can not be used, only need to change axle, two gearwheels can use; Do not need integral replacing after damage.

Description of drawings

Fig. 1 is the transmission shaft structure schematic diagram of prior art;

Fig. 2 is the utility model transmission shaft schematic diagram.

Embodiment

For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.

As shown in Figure 2, CA142 automobile gearbox Split type middle shaft of the present utility model comprises axle 11, is provided with the first gear 12, the second gear 13, the 3rd gear 14 and the 4th gear 15 on axle 11, interference fit between the first gear 12 and the second gear 13 and axle 11, the formula that links into an integrated entity structure; Namely split-type structural between the first gear 12 and the second gear 13 and axle 11, split production, processing separately; Both can be made into one between the 3rd gear 14 and the 4th gear 15 and axle 11, can be also split-type structural, coordinates the formula that links into an integrated entity structure through interference; When concrete interference fit connects, can first be heated to uniform temperature, as 150-180 ℃, generally be no more than 200 ℃, then by pressurization (as the press machine pressurization), respective gears is sleeved on axle 11 cooling rear formation interference fit, the firm integral structure of connection.

Accurately locate in order to make between the first gear 12 and the second gear 13 and axle 11, and limit the first gear 12 and the position of the second gear 13 on axle 11, on on axle 11, shoulder block 16 is set, the external diameter of shoulder block 16 has spacing effect greater than the internal diameter of the second gear 13 that contacts with it.

The relevant physical dimension of axle 11, the first gear 12, the second gear 13, the 3rd gear 14 and the 4th gear 15, parameter etc. determine according to technological requirement, do not describe in detail at this.

In use, if the first gear 12 and/or the second gear 13 are broken and can not use, only need to change these two gears and get final product, axle 11 can use, and axle 11 need not be scrapped; If axle 11 and the 3rd gear 14 or the 4th gear 15(small gear) broken and can not be used, only need to change 11, two gearwheels of axle (the first gear 12 and the second gear 13) and still can use, do not need to change; After the first gear 12 and/or the second gear 13, axle 11 damage, do not need integral replacing.

Explanation is at last, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although with reference to preferred embodiment, the utility model is had been described in detail, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement the technical solution of the utility model, and not breaking away from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of claim scope of the present utility model.

Claims

1.CA142 automobile gearbox Split type middle shaft, comprise axle (11), be provided with the first gear (12), the second gear (13), the 3rd gear (14) and the 4th gear (15) on axle (11), it is characterized in that, split type making between the first gear (12) and the second gear (13) and axle (11), coordinate through interference, the formula that links into an integrated entity structure, both can be made into integral structure between the 3rd gear (14) and the 4th gear (15) and axle (11), can be also split type making, through interference cooperation, the formula that links into an integrated entity structure.

2. CA142 automobile gearbox Split type middle shaft according to claim 1, is characterized in that, shoulder block (16) is set on axle (11), and the external diameter of shoulder block (16) is greater than the internal diameter of the second gear (13) that contacts with it.