CN209369927U - A kind of timing chain drive system of high stability - Google Patents

Abstract

The utility model discloses a kind of timing chain drive systems of high stability, including the first camshaft sprocket, the second camshaft sprocket, crankshaft sprocket and fixed plate, camshaft fifth wheel is installed between the first camshaft sprocket and the second camshaft sprocket, timing chain guide rail is installed between the second camshaft sprocket and crankshaft sprocket, and tensioner arm and timing chain guide rail are respectively positioned on the outside of chain, are equipped with stretcher on the outside of tensioner arm.Timing chain guide rail can be fixedly installed in the outside of chain by fixed block in the utility model, strengthen the stability of timing chain guide rail structure, prevent chain-loose between the second camshaft sprocket and crankshaft sprocket, first camshaft sprocket and the second camshaft sprocket are meshed by camshaft fifth wheel, the frictional force between the first camshaft sprocket and the second camshaft sprocket can be made to reduce, the stability of connection structure is improved, convenient for the permanent use of timing chain drive system.

Description

A kind of timing chain drive system of high stability

Technical field

The utility model relates to technical field of mechanical transmission, in particular to a kind of timing chain drive system of high stability.

Background technique

With being constantly progressive for vehicle technical level and industrial development is made, the Timing Belt of partial engine is started chain Item is substituted, and compared with traditional belt driving, the reliable transmission of chain drive mode, durability is good and can also save sky Between, whole system is made of components such as gear, chain and tensioning devices, and wherein hydraulic tension equipment can automatically adjust expanding force, is made Chain tension is remained the same from beginning to end, and maintenance-free, this just makes itself and engine same service life, and not only safe and reliable property obtains It is certain to be promoted, also the use of engine, maintenance cost are reduced much, general timing chain drive system is after permanent operation, and two Engagement occurs rubbing impaired between a camshaft sprocket, and chain drive is caused to be not sufficiently stable.

Utility model content

The technical problems to be solved in the utility model is to overcome the deficiencies of existing technologies, and provides a kind of timing of high stability Chain drive system, timing chain guide rail can be fixedly installed in the outside of chain by fixed block, strengthen timing chain guide rail The stability of structure, prevents chain-loose between the second camshaft sprocket and crankshaft sprocket, the first camshaft sprocket and second convex Wheel shaft sprocket wheel is meshed by camshaft fifth wheel, can make the friction between the first camshaft sprocket and the second camshaft sprocket Power reduces, and the stability of connection structure is improved, convenient for the permanent use of timing chain drive system.

In order to solve the above-mentioned technical problem, the utility model provides the following technical solution:

A kind of timing chain drive system of high stability of the utility model, including the first camshaft sprocket, the second camshaft Sprocket wheel, crankshaft sprocket and fixed plate, first camshaft sprocket, the second camshaft sprocket and crankshaft sprocket are mounted on fixation On plate, first camshaft sprocket, the second camshaft sprocket and wrapping around for crankshaft sprocket are provided with chain, and described first Camshaft fifth wheel, first camshaft sprocket and crankshaft sprocket are installed between camshaft sprocket and the second camshaft sprocket Between tensioner arm is installed, timing chain guide rail, and tensioner arm are installed between second camshaft sprocket and crankshaft sprocket It is respectively positioned on the outside of chain with timing chain guide rail, stretcher is installed on the outside of the tensioner arm.

As a kind of optimal technical scheme of the utility model, one end of the timing chain guide rail is equipped with several fixations Block, and fixed block is embedded in the inside of chain.

As a kind of optimal technical scheme of the utility model, several spiral shells are offered at the marginal surface of the fixed plate Hole.

As a kind of optimal technical scheme of the utility model, the tensioner arm is formed using PA66 plastic production.

As a kind of optimal technical scheme of the utility model, first camshaft sprocket and the second camshaft sprocket are logical Camshaft fifth wheel is crossed to be meshed.

As a kind of optimal technical scheme of the utility model, the timing chain guide rail is mutually inserted by fixed block with chain It connects.

As a kind of optimal technical scheme of the utility model, first camshaft sprocket, the second camshaft sprocket, song Axis sprocket wheel passes through chain wheel external toothing, and the first camshaft sprocket, the second camshaft sprocket, crankshaft sprocket combine to form Y word Shape structure.

Compared with prior art, the beneficial effects of the utility model are as follows:

Timing chain guide rail can be fixedly installed in the outside of chain by fixed block in the utility model, strengthen timing The stability of chain guide structure prevents chain-loose between the second camshaft sprocket and crankshaft sprocket, the first camshaft sprocket Be meshed with the second camshaft sprocket by camshaft fifth wheel, can make the first camshaft sprocket and the second camshaft sprocket it Between frictional force reduce, the stability of connection structure is improved, convenient for the permanent use of timing chain drive system.

Detailed description of the invention

Attached drawing is used to provide a further understanding of the present invention, and constitutes part of specification, practical with this Novel embodiment is used to explain the utility model together, does not constitute limitations of the present invention.In the accompanying drawings:

Fig. 1 is the overall structure diagram of the utility model；

Fig. 2 is the stretcher structure chart of the utility model；

Fig. 3 is the timing chain guide rail and fixed block connection structure diagram of the utility model；

In figure: 1, the first camshaft sprocket；2, the second camshaft sprocket；3, crankshaft sprocket；4, fixed plate；5, chain；6, Camshaft fifth wheel；7, tensioner arm；8, timing chain guide rail；9, stretcher；10, fixed block；11, screw hole.

Specific embodiment

It is illustrated below in conjunction with preferred embodiment of the attached drawing to the utility model, it should be understood that described herein excellent It selects embodiment to be only used for describing and explaining the present invention, is not used to limit the utility model.Wherein identical mark in attached drawing Number all refer to identical component.

In addition, if the detailed description of known technology for show the utility model be characterized in it is unnecessary, then by it It omits.It should be noted that word "front", "rear" used in the following description, "left", "right", "up" and "down" refer to it is attached Direction in figure, word "inner" and "outside" refer respectively to the direction towards or away from geometric center of specific component.

Embodiment 1

As shown in Figure 1-3, the utility model provides a kind of timing chain drive system of high stability, including the first camshaft Sprocket wheel 1, the second camshaft sprocket 2, crankshaft sprocket 3 and fixed plate 4, the first camshaft sprocket 1, the second camshaft sprocket 2 and song Axis sprocket wheel 3 is mounted in fixed plate 4, and the first camshaft sprocket 1, the second camshaft sprocket 2 and crankshaft sprocket 3 wrap around It is provided with chain 5, camshaft fifth wheel 6, the first cam are installed between the first camshaft sprocket 1 and the second camshaft sprocket 2 Tensioner arm 7 is installed between axis sprocket wheel 1 and crankshaft sprocket 3, timing is installed between the second camshaft sprocket 2 and crankshaft sprocket 3 Chain guide 8, and tensioner arm 7 and timing chain guide rail 8 are respectively positioned on the outside of chain 5, the outside of tensioner arm 7 is equipped with stretcher 9。

Further, one end of timing chain guide rail 8 is equipped with several fixed blocks 10, and fixed block 10 is embedded in chain 5 Inside, the outside of chain 5 can be fixedly installed in by fixed block 10 convenient for timing chain guide rail 8, strengthens timing chain The stability of 8 structure of guide rail prevents chain 5 between the second camshaft sprocket 2 and crankshaft sprocket 3 from loosening.

Several screw holes 11 are offered at the marginal surface of fixed plate 4, and the transmission system of entire engine is facilitated to be fixedly mounted On automobile.

Tensioner arm 7 is formed using PA66 plastic production, and PA66 plastics have excellent wearability, self-lubrication, mechanical strong Degree is higher, strengthens structural strength, improves stability, convenient for being used for a long time.

First camshaft sprocket 1 and the second camshaft sprocket 2 are meshed by camshaft fifth wheel 6, can be made first convex Frictional force between wheel shaft sprocket wheel 1 and the second camshaft sprocket 2 reduces, and the stability of connection structure is improved, convenient for permanent It uses.

Timing chain guide rail 8 is plugged by fixed block 10 with chain 5, and timing chain guide rail 8 can pass through fixed block 10 It is fixedly installed in the outside of chain 5, strengthens the stability of 8 structure of timing chain guide rail, and timing chain guide rail 8 and fixed block 10, which are connected, to form L-type structure, easy to disassemble.

First camshaft sprocket 1, the second camshaft sprocket 2, crankshaft sprocket 3 take turns external toothing by chain 5, and first is convex Wheel shaft sprocket wheel 1, the second camshaft sprocket 2, the combination of crankshaft sprocket 3 form Y-shaped structure, so that the first camshaft sprocket 1, second Camshaft sprocket 2, crankshaft sprocket 3 are driven by chain 5, while the first camshaft sprocket 1, the second camshaft sprocket 2, song The combination of axis sprocket wheel 3 forms Y-shaped structure, has preferable stability structure.

Specifically, the first camshaft sprocket 1, the second camshaft sprocket 2 and crankshaft sprocket 3 are mounted in fixed plate 4, Several screw holes 11 are offered at the marginal surface of fixed plate 4, and the transmission system of entire engine is facilitated to be fixedly mounted on automobile, Timing chain guide rail 8 can be fixedly installed in the outside of chain 5 by fixed block 10, strengthen 8 structure of timing chain guide rail Stability prevents chain 5 between the second camshaft sprocket 2 and crankshaft sprocket 3 from loosening, the first camshaft sprocket 1 and the second cam Axis sprocket wheel 2 is meshed by camshaft fifth wheel 6, can make rubbing between the first camshaft sprocket 1 and the second camshaft sprocket 2 Wiping power reduces, and the stability of connection structure is improved, convenient for permanent use, the first camshaft sprocket 1, the second camshaft sprocket 2, crankshaft sprocket 3 is driven by chain 5, while the first camshaft sprocket 1, the second camshaft sprocket 2,3 groups of crankshaft sprocket Conjunction forms Y-shaped structure, has preferable stability structure.

Timing chain guide rail 8 can be fixedly installed in the outside of chain 5 by fixed block 10 in the utility model, strengthen The stability of 8 structure of timing chain guide rail prevents chain 5 between the second camshaft sprocket 2 and crankshaft sprocket 3 from loosening, and first is convex Wheel shaft sprocket wheel 1 and the second camshaft sprocket 2 are meshed by camshaft fifth wheel 6, can make the first camshaft sprocket 1 and second Frictional force between camshaft sprocket 2 reduces, and improves the stability of connection structure, makes convenient for timing chain drive system is permanent With.

Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention, it is not limited to this Utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art For, it is still possible to modify the technical solutions described in the foregoing embodiments, or to part of technical characteristic It is equivalently replaced.Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on, It should be included within the scope of protection of this utility model.

Claims (7)

1. a kind of timing chain drive system of high stability, including the first camshaft sprocket (1), the second camshaft sprocket (2), song Axis sprocket wheel (3) and fixed plate (4), which is characterized in that first camshaft sprocket (1), the second camshaft sprocket (2) and crankshaft Sprocket wheel (3) is mounted on fixed plate (4), first camshaft sprocket (1), the second camshaft sprocket (2) and crankshaft sprocket (3) wrap around is provided with chain (5), is equipped between first camshaft sprocket (1) and the second camshaft sprocket (2) Camshaft fifth wheel (6) is equipped with tensioner arm (7) between first camshaft sprocket (1) and crankshaft sprocket (3), and described It is equipped between two camshaft sprockets (2) and crankshaft sprocket (3) timing chain guide rail (8), and tensioner arm (7) is led with timing chain Rail (8) is respectively positioned on the outside of chain (5), is equipped with stretcher (9) on the outside of the tensioner arm (7).

2. a kind of timing chain drive system of high stability according to claim 1, which is characterized in that the timing chain One end of guide rail (8) is equipped with several fixed blocks (10), and fixed block (10) is embedded in the inside of chain (5).

3. a kind of timing chain drive system of high stability according to claim 1, which is characterized in that the fixed plate (4) several screw holes (11) are offered at marginal surface.

4. a kind of timing chain drive system of high stability according to claim 1, which is characterized in that the tensioner arm (7) it is formed using PA66 plastic production.

5. a kind of timing chain drive system of high stability according to claim 1, which is characterized in that first cam Axis sprocket wheel (1) and the second camshaft sprocket (2) are meshed by camshaft fifth wheel (6).

6. a kind of timing chain drive system of high stability according to claim 1, which is characterized in that the timing chain Guide rail (8) is plugged by fixed block (10) with chain (5).

7. a kind of timing chain drive system of high stability according to claim 1, which is characterized in that first cam Axis sprocket wheel (1), the second camshaft sprocket (2), crankshaft sprocket (3) take turns external toothing, and the first camshaft sprocket by chain (5) (1), the second camshaft sprocket (2), crankshaft sprocket (3) combination form Y-shaped structure.