CN215763102U - Forward and reverse full-time tensioning mechanism for chain wheel and vehicle with same - Google Patents
Forward and reverse full-time tensioning mechanism for chain wheel and vehicle with same Download PDFInfo
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- CN215763102U CN215763102U CN202121582827.XU CN202121582827U CN215763102U CN 215763102 U CN215763102 U CN 215763102U CN 202121582827 U CN202121582827 U CN 202121582827U CN 215763102 U CN215763102 U CN 215763102U
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- sprocket
- chain wheel
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Abstract
The utility model provides a chain wheel forward and reverse full-time tensioning mechanism and a vehicle with the same, wherein the chain wheel forward and reverse full-time tensioning mechanism comprises a chain ring positioned on a vehicle frame, the chain ring is arranged around a first chain wheel and a second chain wheel, two tensioning chain wheels are respectively arranged on the upper side and the lower side of the chain ring, the tensioning chain wheels are connected through a strip-shaped structure with the center fixed on the vehicle frame to form a tensioning support, the tensioning support is also connected with a return spring, one end of the return spring is connected to the tensioning support, and the other end of the return spring is connected to the vehicle frame. The tensioning mechanism has the advantages of simple structure, small number of parts and good reliability; the volume and the weight are small, and the space of an engine compartment cannot be occupied; no matter the vehicle is in an accelerating state or a decelerating state, the chain can be effectively tensioned, and the chain is prevented from being abraded and separated due to shaking.
Description
Technical Field
The utility model relates to a chain transmission device, in particular to a forward and reverse tensioning device for a chain wheel and a vehicle with the same.
Background
In all-terrain vehicles, chain transmission is a common power transmission mode, has the advantages of simple and reliable structure, high transmission efficiency and the like, but the chain has the characteristic of non-adjustable length, and simultaneously becomes loose due to the fact that the pitch of the chain is increased after the chain works for a long time. The wrap angle of the chain wheel is gradually reduced, and the transmission capacity is reduced. Conventional sprocket tensioning mechanisms typically employ a bolt adjustment that requires manual adjustment at intervals. Meanwhile, the engine room of the all-terrain vehicle is compact in structure, and the additional chain wheel tensioning mechanism is difficult to arrange parts. At the same time, the compact layout of the engine compartment also makes the adjustment work difficult. Furthermore, for all terrain vehicles, the first sprocket is driven by the second sprocket when the vehicle is accelerating, while the position where the chain is tightened is different when the vehicle is decelerating due to engine braking. Therefore, a device is needed that can automatically adjust the degree of chain tension in both directions.
Disclosure of Invention
Based on the problems existing in the prior art, the utility model designs the forward and reverse tensioning mechanism of the chain wheel, the tensioning mechanism automatically compresses the chain ring by utilizing the force which is generated by the chain ring and used for tensioning the chain ring when a vehicle is accelerated and decelerated, and the direction of the chain ring can be automatically changed when the two states of acceleration and deceleration are switched.
The utility model adopts the following scheme:
the utility model provides a sprocket positive reverse tensioning mechanism when full, is including being located the chain circle on the frame, the chain circle sets up around first sprocket and second sprocket, the both sides respectively are provided with a tensioning sprocket about the chain circle, tensioning sprocket is connected through a central strip structure of fixing on the frame and is formed the tensioning support, the tensioning support still is connected with return spring, return spring one end is connected to the tensioning support, one end is connected to the frame.
Preferably, the first chain wheel and the second chain wheel have different sizes, and the strip-shaped structures are arranged around the centers of the first chain wheel and the second chain wheel in an included angle mode.
Preferably, the strip structure is a steel strip structure, and the tension sprocket is connected to the strip structure by a bolt.
Preferably, the return spring is connected to an upper end of the strip structure.
Preferably, the strip-shaped structure is connected to the frame through a bolt, and the strip-shaped structure can drive the tensioning chain wheels on the upper side and the lower side to rotate around the center of the strip-shaped structure.
Preferably, the first sprocket located at the front is larger in size than the second sprocket located at the rear.
The vehicle comprises the chain wheel forward and reverse full-time tensioning mechanism
By adopting the technical scheme, the utility model can obtain the following technical effects: the tensioning mechanism has the advantages of simple structure, small number of parts and good reliability; the volume and the weight are small, and the space of an engine compartment cannot be occupied; no matter the vehicle is in an accelerating state or a decelerating state, the chain ring can be effectively tensioned, and abrasion and chain dropping caused by shaking of the chain ring are prevented.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic illustration of the present invention as the vehicle accelerates.
Fig. 2 is a schematic diagram of the present invention as the vehicle decelerates.
In the figure: 1-a return spring, 2-a first steel sheet, 3-a first tensioning chain wheel, 4-a second steel sheet, 5-a chain ring, 6-a first chain wheel, 7-a second tensioning chain wheel, 8-a second chain wheel, 9-a first bolt, 10-a second bolt and 11-a third bolt.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Examples
The following are only preferred embodiments of the present invention, and the scope of the present invention is not limited to the following examples, and all technical solutions belonging to the idea of the present invention belong to the scope of the present invention.
A steel bar is respectively arranged on two sides of the chain ring and connected together through three bolts to form a support of the tensioning mechanism, the support is fixed on the frame through the middle bolt, and the support can rotate around the middle bolt. The upper bolt and the lower bolt of the bracket are respectively fixed with a tension chain wheel. The upper point of the bracket is connected with a return spring, and the other end of the return spring is connected with the frame. When the vehicle accelerates, because the first sprocket of second sprocket drive for the chain circle upper portion is taut, makes the support rotate around middle bolt anticlockwise, adds return spring's effect simultaneously, makes lower part tension sprocket compress tightly the latter half of chain circle. When the vehicle decelerates, the lower part of the chain loop is tensioned under the action of engine brake, and the bracket rotates clockwise around the middle bolt after overcoming the tension of the return spring, so that the upper tensioning chain wheel compresses the upper half part of the chain loop. Thereby realizing the function of bidirectional tensioning of the chain ring.
As shown in the attached figure 1, the first steel sheet 2 and the second steel sheet 4 are respectively arranged on two sides of the chain ring 5 and are connected together through three bolts 9, 10 and 11 to form a bracket of the tensioning mechanism, and the second bolt 10 is fixed on the frame and can rotate around the bolt. The first bolt 9 fixes the first tension sprocket 3 and the third bolt 11 fixes the second tension sprocket 7. The upper end of the first steel sheet 2 is connected with a return spring 1, and the return spring 1 is connected with the frame. When the vehicle accelerates, second sprocket 8 anticlockwise rotates, because vehicle inertia effect will lead to the first half of chain circle 5 to be in taut state, and at this moment, first tensioning sprocket 3 receives the taut effect of chain circle, will lift upwards, drives straining device's support and around second bolt 10 anticlockwise rotation, simultaneously, under return spring 1's combined action, will make second tensioning sprocket 7 compress tightly the latter half of chain circle 5.
As shown in fig. 2, when the vehicle is decelerated, the lower half of the chain loop 5 is tensioned under the influence of engine braking, and the tensioned chain causes the second tensioning sprocket 7 to move downward and simultaneously drives the tensioning bracket to rotate clockwise around the second bolt 10, so that the first tensioning sprocket 3 is pressed against the upper half of the chain loop 5 after overcoming the tension of the return spring 1.
The chain wheel forward and backward tensioning mechanism overcomes the defects that the traditional chain wheel tensioning mechanism needs manual timing adjustment and can only tension from one direction, automatically switches the tensioning direction by using the tensioning force of a chain ring when a vehicle accelerates or decelerates, increases the wrap angle of the chain wheel, improves the transmission capacity of the chain wheel, and can prevent the mutual abrasion between the chain wheel and the chain ring caused by the shake of the chain ring.
The tensioning device is used for automatically switching the tensioning position by using the tensioning force of the chain ring when a vehicle accelerates or decelerates, increasing the wrap angle of the chain wheel, reducing the vibration and the shake of the chain ring, improving the transmission capability of the chain wheel, and preventing the mutual abrasion between the chain wheel and the chain ring and the chain release caused by the shake of the chain ring.
Claims (7)
1. The chain wheel forward and reverse full-time tensioning mechanism is characterized by comprising a chain ring located on a frame, wherein the chain ring is arranged around a first chain wheel and a second chain wheel, two tensioning chain wheels are respectively arranged on the upper side and the lower side of the chain ring, the tensioning chain wheels are connected through a strip-shaped structure fixed on the frame at the center to form a tensioning support, the tensioning support is further connected with a return spring, one end of the return spring is connected to the tensioning support, and the other end of the return spring is connected to the frame.
2. The sprocket forward and reverse full time tensioning mechanism according to claim 1 wherein the first sprocket and the second sprocket are of different sizes and the strip structure is angled about its center.
3. The sprocket forward and reverse full time tensioning mechanism as claimed in claim 2, wherein the bar structure is a steel bar structure and the tensioning sprocket is bolted to the bar structure.
4. The sprocket forward and reverse full time tensioning mechanism according to claim 3, wherein the return spring is connected to the upper end of the bar structure.
5. The sprocket forward and reverse full time tensioning mechanism according to claim 3, wherein the strip structure is connected to the frame by bolts, and the strip structure can drive the tensioning sprockets on the upper side and the lower side to rotate around the center of the strip structure.
6. The sprocket forward and reverse full time tensioning mechanism as defined in claim 5 wherein the first sprocket at the front is larger in size than the second sprocket at the rear.
7. A vehicle comprising a sprocket forward and reverse full time tensioning mechanism according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121582827.XU CN215763102U (en) | 2021-07-12 | 2021-07-12 | Forward and reverse full-time tensioning mechanism for chain wheel and vehicle with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121582827.XU CN215763102U (en) | 2021-07-12 | 2021-07-12 | Forward and reverse full-time tensioning mechanism for chain wheel and vehicle with same |
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| Publication Number | Publication Date |
|---|---|
| CN215763102U true CN215763102U (en) | 2022-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121582827.XU Active CN215763102U (en) | 2021-07-12 | 2021-07-12 | Forward and reverse full-time tensioning mechanism for chain wheel and vehicle with same |
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| CN (1) | CN215763102U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114483896A (en) * | 2022-02-25 | 2022-05-13 | 北京半导体专用设备研究所（中国电子科技集团公司第四十五研究所） | Chain wheel tensioning mechanism |
-
2021
- 2021-07-12 CN CN202121582827.XU patent/CN215763102U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114483896A (en) * | 2022-02-25 | 2022-05-13 | 北京半导体专用设备研究所（中国电子科技集团公司第四十五研究所） | Chain wheel tensioning mechanism |
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