CN207989669U - Guide rail between sprocket wheel - Google Patents
Guide rail between sprocket wheel Download PDFInfo
- Publication number
- CN207989669U CN207989669U CN201820450574.2U CN201820450574U CN207989669U CN 207989669 U CN207989669 U CN 207989669U CN 201820450574 U CN201820450574 U CN 201820450574U CN 207989669 U CN207989669 U CN 207989669U
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- CN
- China
- Prior art keywords
- guide rail
- sprocket wheel
- camshafts
- timing chain
- chain
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model discloses guide rails between a kind of sprocket wheel, are applied in engine driving system, engine driving system includes chain drive, and chain drive includes：Timing chain, the first guide rail, idle gear, the second guide rail and two camshafts disposed in parallel, chain drive is transferring torque to two camshafts, it is characterized in that, one end of guide rail is covered on the top of two camshafts between sprocket wheel, timing chain is between sprocket wheel between guide rail and two camshafts, and guide rail is to assist timing chain by two camshafts between sprocket wheel, to enable timing chain to be driven.Whereby, guide rail between the sprocket wheel of the utility model, guide rail is arranged between two parallel camshafts between sprocket wheel, and sprocket wheel span is smaller, so that timing chain transmission is more steady, is conducive to NVH.
Description
Technical field
The utility model is related to engine arts, and guide rail between more particularly to a kind of sprocket wheel.
Background technology
During engine is designed and developed, chain transmission mode is a kind of more typical biography work(mode, simple in structure, and transmission is steady
Fixed, chain transmission mode transmits torque, chain movement by chain.
It is designed for diesel engine overhead camshaft, the more common kind of drive uses chain drive.Chain passes
In dynamic, guide rail is needed to be assisted, generally orbit determination and dynamic rail.Orbit determination or dynamic rail are typically designed between upper lower sprocket, sprocket wheel
In the larger space of span.
The information for being disclosed in the background technology part is merely intended to increase the understanding to the general background of the utility model, and
It is not construed as recognizing or implying in any form that information composition has been existing well known to persons skilled in the art
Technology.
Utility model content
The purpose of this utility model is to provide guide rail between a kind of sprocket wheel, guide rail is arranged in two parallel cams between sprocket wheel
Between axis, sprocket wheel span is smaller, so that timing chain transmission is more steady.
To achieve the above object, the utility model provides guide rail between a kind of sprocket wheel, is applied in engine driving system,
Engine driving system includes chain drive, and chain drive includes：Timing chain, the first guide rail, idle gear,
Two guide rails and two camshafts disposed in parallel, to transfer torque to two camshafts, feature exists chain drive
In one end of guide rail is covered on the top of two camshafts, timing chain guide rail and two camshafts between sprocket wheel between sprocket wheel
Between, and guide rail is to assist timing chain by two camshafts between sprocket wheel, to enable timing chain to be driven.
Preferably, in above-mentioned technical proposal, guide rail is in I-shaped between sprocket wheel, and the both sides of the other end of guide rail are divided between sprocket wheel
It is not tightened on the bearing cap of two camshafts by bolt.
Preferably, in above-mentioned technical proposal, the first guide rail is orbit determination, and the second guide rail is dynamic rail.
Preferably, in above-mentioned technical proposal, idle gear includes the gear parts and sprocket wheel for being configured to have integral structure
Part.
Preferably, in above-mentioned technical proposal, the bottom of timing chain is engaged with the sprocket part of idle gear, timing chain
Top is engaged with two camshafts, to which the torque of idle gear is passed to two camshafts by timing chain.
Preferably, in above-mentioned technical proposal, the first guide rail and the second guide rail are respectively arranged at the both sides of timing chain, and
One guide rail and the second guide rail are respectively assisting timing chain to be driven.
Compared with prior art, the utility model has the advantages that：Guide rail between the sprocket wheel of the utility model, sprocket wheel
Between guide rail be arranged between two parallel camshafts, sprocket wheel span is smaller so that timing chain transmission it is more steady, have
Conducive to NVH.
Description of the drawings
Fig. 1 is the dimensional structure diagram of guide rail between sprocket wheel according to the present utility model.
Fig. 2 is the structural schematic diagram of guide rail between sprocket wheel according to the present utility model being applied in engine driving system.
Fig. 3 is the structural schematic diagram for being installed on camshaft bearing and covering of guide rail between sprocket wheel according to the present utility model.
Main appended drawing reference explanation：
Guide rail between 1- sprocket wheels, 11- screw holes, 12- bolts, 2- timing chains, the first guide rails of 3-, 4- idle gears, 5- second are led
Rail, 6- camshafts, 61- bearing caps.
Specific implementation mode
Below in conjunction with the accompanying drawings, specific embodiment of the present utility model is described in detail, it is to be understood that this practicality
Novel protection domain is not restricted by specific implementation.
Unless otherwise explicitly stated, otherwise in entire disclosure and claims, term " comprising " or its change
It changes such as "comprising" or " including " etc. and will be understood to comprise stated element or component, and do not exclude other members
Part or other component parts.
As shown in Figure 1 to Figure 3, Fig. 1 is the dimensional structure diagram of guide rail between sprocket wheel according to the present utility model, and Fig. 2 is
The structural schematic diagram of guide rail being applied in engine driving system between sprocket wheel according to the present utility model, Fig. 3 is according to this reality
With the structural schematic diagram for being installed on camshaft bearing and covering of guide rail between novel sprocket wheel.
According to guide rail between a kind of sprocket wheel of specific embodiment of the present invention, it is applied in engine driving system, hair
Motivation transmission system includes chain drive, and chain drive includes：Timing chain 2, the first guide rail 3, idle gear 4,
Second guide rail 5 and two camshafts 6 disposed in parallel, chain drive are special to transfer torque to two camshafts 6
Sign is that one end of guide rail 1 is covered on the top of two camshafts 6, the guide rail 1 and two between sprocket wheel of timing chain 2 between sprocket wheel
Between a camshaft 6, and guide rail 1 is to assist timing chain 2 by two camshafts 6 between sprocket wheel, to enable timing chain 2
Enough it is driven.
Preferably, guide rail 1 is in I-shaped between sprocket wheel, and the both sides of the other end of guide rail 1 pass through bolt 12 respectively between sprocket wheel
Tighten on the bearing cap 61 of two camshafts 6 (that is, the both sides of the other end of guide rail 1 offer screw hole 11 respectively between sprocket wheel,
Two screw holes 11 are passed through by two bolts 12 and are tightened on the bearing cap 61 of two camshafts 6, to by guide rail 1 between sprocket wheel
It is fixed on bearing cap 61)；First guide rail 3 is orbit determination, and the second guide rail 5 is dynamic rail.
Preferably, idle gear 4 includes the gear parts and sprocket part for being configured to have integral structure；Timing chain 2
Bottom engaged with the sprocket part of idle gear 4, the top of timing chain 2 is engaged with two camshafts 6, to pass through timing chain
The torque of idle gear 4 is passed to two camshafts 6 by item 2；First guide rail 3 and the second guide rail 5 are respectively arranged at timing chain 2
Both sides, and the first guide rail 3 and the second guide rail 5 are respectively assisting timing chain 2 to be driven.
In practical applications, idle gear 4 includes gear parts and sprocket part, and chain drive is the chain wheel portion from idle gear 4
Separately begin, the bottom of timing chain 2 is engaged with sprocket part, and the top of timing chain 2 passes through guide rail between sprocket wheel 1 and two cams
Axis 6 engages, to transfer torque to two camshafts 6 by timing chain 2.The both sides of timing chain 2 are respectively arranged with first
Guide rail 3 (orbit determination) and the second guide rail 5 (dynamic rail), so that timing chain 2 can be driven in two guide rails, chain drive is main
It applies and is driven in camshaft 6, play the features such as chain drive high speed performance is good, movement parts are few and moving-mass is light.Due to two it is convex
(top) has guide rail 1 between sprocket wheel between wheel shaft 6, so that timing chain 2 can be driven between sprocket wheel in guide rail 1, in turn
So that sprocket wheel span is smaller, the transmission of timing chain 2 for being is more steady.
Always, guide rail between the sprocket wheel of the utility model increases on the basis of the orbit determination of normal chain transmission system and dynamic rail
Guide Rail Design between sprocket wheel, guide rail is arranged between two parallel camshafts between sprocket wheel, and sprocket wheel span is smaller, so that just
When chain drive it is more steady, be conducive to NVH.
The description of the aforementioned specific exemplary embodiment to the utility model is in order to illustrate and illustration purpose.These
Description is not wishing to for the utility model to be limited to disclosed precise forms, and it will be apparent that according to the above instruction, can carry out
Many change and variations.The purpose of selecting and describing the exemplary embodiment is that explaining the specific principle of the utility model
And its practical application, so that those skilled in the art can realize and utilize a variety of different examples of the utility model
Property embodiment and various chooses and changes.The scope of the utility model is intended to by claims and its waits similar shapes
Formula is limited.
Claims (6)
1. guide rail between a kind of sprocket wheel is applied in engine driving system, the engine driving system includes chain drive machine
Structure, and the chain drive includes：Timing chain, the first guide rail, idle gear, the second guide rail and two disposed in parallel
Camshaft, the chain drive is transferring torque to described two camshafts, which is characterized in that guide rail between the sprocket wheel
One end be covered on the tops of described two camshafts, the timing chain guide rail and described two cams between the sprocket wheel
Between axis, and guide rail is to assist the timing chain by described two camshafts between the sprocket wheel, to make the timing
Chain can be driven.
2. guide rail between sprocket wheel according to claim 1, which is characterized in that guide rail is in I-shaped and described between the sprocket wheel
The both sides of the other end of guide rail are tightened by bolt on the bearing cap of described two camshafts respectively between sprocket wheel.
3. guide rail between sprocket wheel according to claim 1, which is characterized in that first guide rail is orbit determination, and described second
Guide rail is dynamic rail.
4. guide rail between sprocket wheel according to claim 1, which is characterized in that the idle gear includes being configured to have one
The gear parts and sprocket part of structure.
5. guide rail between sprocket wheel according to claim 4, which is characterized in that the bottom of the timing chain and the idle gear
Sprocket part engagement, the top of the timing chain engages with described two camshafts, to pass through the timing chain
The torque of the idle gear is passed to described two camshafts by item.
6. guide rail between sprocket wheel according to claim 1, which is characterized in that first guide rail and second guide rail difference
It is set to the both sides of the timing chain, and first guide rail and second guide rail are respectively assisting the timing chain
It is driven.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820450574.2U CN207989669U (en) | 2018-04-02 | 2018-04-02 | Guide rail between sprocket wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820450574.2U CN207989669U (en) | 2018-04-02 | 2018-04-02 | Guide rail between sprocket wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207989669U true CN207989669U (en) | 2018-10-19 |
Family
ID=63829610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820450574.2U Active CN207989669U (en) | 2018-04-02 | 2018-04-02 | Guide rail between sprocket wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207989669U (en) |
-
2018
- 2018-04-02 CN CN201820450574.2U patent/CN207989669U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |