A double-sided automatic tensioning mechanism for a chain

Abstract

The utility model discloses a double-sided automatic tensioning mechanism for a chain, comprising: a first sprocket, a second sprocket and a chain, wherein the chain is arranged on the first sprocket and the second sprocket so that the chain has a first side and a second side opposite to each other; a tensioning plate, wherein the tensioning plate has a rotating end and a tensioning end, wherein the tensioning plate is arranged so that the tensioning end can rotate around the rotating end, wherein the tensioning plate has two tensioning plates and are respectively arranged at the first side and the second side, wherein the tensioning ends of the two tensioning plates respectively press the first side and the second side of the chain by means of the elastic force of an elastic member; the utility model can solve the problem that a traditional chain tensioning structure cannot respectively satisfy the tensioning effect of the chain when rotating clockwise or counterclockwise, and has limitations.

Description

Technical Field

[0001] The utility model relates to the technical field of chains, in particular to a double-sided automatic tensioning mechanism for a chain. Background Art

[0002] Chain drive is one of the commonly used transmission methods. In actual operation, the chain will gradually become longer due to chain stretching and wear of various components. Therefore, the chain needs to be tensioned after running for a period of time.

[0003] At present, the commonly used methods are manual tensioning and single-sided automatic tensioning. When the chain rotates clockwise or counterclockwise, the tension on different sides of the chain needs to be changed frequently, which makes single-sided automatic tensioning unusable, and manual tensioning requires stopping the machine for tensioning operation, which is inconvenient to operate and affects work efficiency. Utility Model Content

[0004] In order to overcome the above-mentioned shortcomings, the purpose of the utility model is to provide a double-sided automatic chain tensioning mechanism.

[0005] In order to achieve the above objectives, the technical solution adopted by the utility model includes:

[0006] A first sprocket, a second sprocket and a chain, wherein the chain is disposed on the first sprocket and the second sprocket so that the chain has a first side and a second side opposite to each other;

[0007] A tensioning plate, wherein the tensioning plate has a rotating end and a tensioning end, and the tensioning plate is configured so that the tensioning end can rotate around the rotating end. The tensioning plate has two tensioning plates and are respectively configured at the first side and the second side. The tensioning ends of the two tensioning plates use the elastic force of the elastic member to respectively press the first side and the second side of the chain.

[0008] The present application connects the tensioning ends of the two tensioning plates respectively through the first end and the second end of the elastic member, and uses the pulling force of the elastic member to make the two tensioning plates always contact the first side and the second side of the compression chain respectively, so as to realize the tensioning of the second side or the first side when the chain rotates clockwise or counterclockwise, reduce manual intervention in the chain tensioning process, improve the overall working efficiency of the equipment, and have practicality.

[0009] In the preferred technical solution of the above-mentioned chain double-sided automatic tensioning mechanism, the tensioning plate is arranged on a fixed plate, and at least one group of positioning holes opened along the first direction is formed on the fixed plate.

[0010] In the preferred technical solution of the above-mentioned chain double-sided automatic tensioning mechanism, the fixed plate is rotatably mounted on the frame through a rotating shaft at one end close to the rotating end of the tensioning plate.

[0011] In the preferred technical solution of the above-mentioned chain double-sided automatic tensioning mechanism, three groups of positioning holes are opened on each of the fixing plates along the first direction.

[0012] In the preferred technical solution of the above-mentioned chain double-sided automatic tensioning mechanism, the frame body is provided with at least two groups of limiting holes along the first direction, and the rotating shaft is located in the limiting holes.

[0013] In the preferred technical solution of the above-mentioned double-sided automatic tensioning mechanism for the chain, a contact protrusion is formed on the tensioning plate, and the contact protrusion is used to abut against the roller of the chain.

[0014] In the preferred technical solution of the above-mentioned chain double-sided automatic tensioning mechanism, the elastic member is a hook spring.

[0015] In the preferred technical solution of the above-mentioned chain double-sided automatic tensioning mechanism, the two tensioning plates are symmetrically arranged.

[0016] In the preferred technical solution of the above-mentioned chain double-sided automatic tensioning mechanism, the tensioning plate is made of nylon.

[0017] In the preferred technical solution of the above-mentioned chain double-sided automatic tensioning mechanism, the fixing plate is made of iron or steel.

[0018] The beneficial effect of the utility model is that the tensioning ends of the two tensioning plates are respectively connected at both ends of the elastic member, and with the help of the pulling force of the elastic member, the two tensioning plates are always in contact with the first side and the second side of the compression chain respectively, so that when the chain rotates clockwise, one group of tensioning plates can achieve tensioning on the second side, and when the chain rotates counterclockwise, the other group of tensioning plates can achieve tensioning on the first side, thereby reducing manual intervention in the chain tensioning process, improving the overall working efficiency of the equipment, and having practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front view of the utility model;

[0020] Figure 2 The main view of the utility model Figure 1 ;

[0021] Figure 3 The main view of the utility model Figure 2 ;

[0022] Figure 4 It is the connection relationship diagram of the fixed plate and the tensioning plate;

[0023] Figure 5 It is a connection diagram between the fixed plate and the frame;

[0024] In the figure: a first sprocket 1, a second sprocket 2, a chain 3, a first side 31, a second side 32, a tensioning plate 4, a rotating end 41, a tensioning end 42, a contact protrusion 43, an elastic member 5, a fixing plate 6, a positioning hole 61, a rotating shaft 7, a frame 8, and a limiting hole 81. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0026] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "front", "rear" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0027] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "disposed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] like Figures 1 to 5 As shown, the double-sided automatic tensioning mechanism of the chain of the utility model comprises: a first sprocket 1, a second sprocket 2 and a chain 3, the chain 3 is arranged on the first sprocket 1 and the second sprocket 2 so that the chain 3 has a first side 31 and a second side 32 opposite to each other; a tensioning plate 4, the tensioning plate 4 has a rotating end 41 and a tensioning end 42, the tensioning plate 4 is arranged so that the tensioning end 42 can rotate around the rotating end 41, the tensioning plate 4 has two and is respectively arranged at the first side 31 and the second side 32, the tensioning ends 42 of the two tensioning plates 4 use the elastic force of the elastic member 5 to respectively press the first side 31 and the second side 32 of the chain 3.

[0029] See also Figures 1 to 3 The tensioning plate 4 has two ends, which are respectively arranged at the first side 31 and the second side 32 of the chain 3. At this time, the rotating end 41 of the tensioning plate 4 is relatively fixed, and the tensioning end 42 of the tensioning plate 4 can rotate around the rotating end 41, so as to adapt to the requirements of different tightness of the chain 3.

[0030] See also Figures 1 to 3The elastic member 5 has a first end and a second end. The first end of the elastic member 5 is connected to the tensioning end 42 of the tensioning plate 4 at the first side 31, and the second end of the elastic member 5 is connected to the tensioning end 42 of the tensioning plate 4 at the second side 32. The tensioning ends 42 of the two tensioning plates 4 are pulled by the elastic member 5 so that the two tensioning plates 4 are respectively abutted against the first side 31 and the second side 32 of the chain 3, thereby achieving tensioning of the first side 31 and the second side 32 of the chain 3.

[0031] When the chain 3 rotates clockwise, the first side 31 of the chain 3 changes from a relaxed state to a tensioned state, and the second side 32 of the chain 3 changes from a relaxed state to a more relaxed state. At this time, since the tension of the elastic member 5 on the tensioning ends 42 of the two tensioning plates 4 is always within a certain threshold range, when the tension of the elastic member 5 on the first side 31 of the chain 3 is weakened, the elastic member 5 will increase the tension on the second side 32 of the chain 3, thereby achieving tensioning of the second side 32 of the chain 3.

[0032] When the chain 3 rotates counterclockwise, the second side 32 of the chain 3 changes from a relaxed state to a tensioned state, and the first side 31 of the chain 3 changes from a relaxed state to a more relaxed state. Since the tension of the elastic member 5 on the two tensioning plates 4 is always within a certain threshold range, when the tension of the elastic member 5 on the second side 32 of the chain 3 is weakened, the elastic member 5 will increase the tension on the first side 31 of the chain 3, thereby achieving tensioning of the first side 31 of the chain 3.

[0033] The present application connects the tensioning ends 42 of the two tensioning plates 4 respectively through the first end and the second end of the elastic member 5, and with the help of the pulling force of the elastic member 5, the two tensioning plates 4 are always in contact with the first side 31 and the second side 32 of the compression chain 3 respectively, so that the chain 3 can be tensioned on the second side 32 or the first side 31 when rotating clockwise or counterclockwise, reducing manual intervention in the tensioning process of the chain 3, improving the overall working efficiency of the equipment, and having practicality.

[0034] In one or more embodiments, the tensioning plate 4 is configured on the fixing plate 6, and at least one group of positioning holes 61 opened along the first direction is formed on the fixing plate 6; the fixing plate 6 is rotatably mounted on the frame 8 through the rotating shaft 7 at one end close to the rotating end 41 of the tensioning plate 4.

[0035] See also Figure 1 The first direction is the direction from the first side 31 to the second side 32 of the chain 3 on the horizontal plane.

[0036] See also Figure 4The tensioning plate 4 is detachably mounted on the fixed plate 6 by bolts, and at least one group of positioning holes 61 opened on the fixed plate 6 along the first direction is relatively located below the fixed plate 6, that is, relatively close to the tensioning end 42 of the tensioning plate 4; the fixed plate 6 is mounted on the frame 8 by rotating on the side close to the rotating end 41 of the tensioning plate 4, and the frame 8 is used to be installed on the production equipment; by fixing the position of the frame 8, the rotational position of the fixed plate 6 and the tensioning plate 4 can be fixed.

[0037] It should be noted that the positioning holes 61 on the two fixed plates 6 are used to connect the first end and the second end of the elastic member 5; by configuring multiple groups of positioning holes 61, the elastic member 5 can be selectively connected to the positioning holes 61 at different positions of the fixed plate 6, thereby changing the pulling force of the elastic member 5 on the fixed plate 6, thereby realizing the change of the tensioning force of the first side 31 and the second side 32 of the chain 3, thereby improving the scope of application of the present application.

[0038] In a specific embodiment, three groups of positioning holes 61 are formed on each fixing plate 6 along the first direction. Figure 4 When it is necessary to increase the tension of the elastic member 5 on the two tensioning plates 4, the first end and the second end of the elastic member 5 can be respectively connected to the outermost positioning holes 61 of the two fixing plates 6. Through this arrangement, the tensioning force of the two tensioning plates 4 on the first side 31 and the second side 32 of the chain 3 can be increased.

[0039] When it is necessary to reduce the tension of the elastic member 5 on the two tensioning plates 4, the first end and the second end of the elastic member 5 can be connected to the innermost positioning holes 61 of the two fixing plates 6, respectively, so as to reduce the tension of the tensioning plate 4 on the first side 31 and the second side 32 of the chain 3. By selectively connecting the elastic member 5 to the positioning holes 61 on the two fixing plates 6, the tension of the first side 31 and the second side 32 of the chain 3 can be changed, which has the characteristics of simple structure, convenient operation and practicality.

[0040] In a specific embodiment, the elastic member 5 is a hook spring. The hook ears at both ends of the hook spring can smoothly connect the two fixing plates 6, which has the characteristic of easy installation.

[0041] In one or more embodiments, the frame 8 is provided with at least two groups of limiting holes 81 along the first direction, and the rotating shaft 7 is located in the limiting holes 81 .

[0042] See also Figure 2 , Figure 5 In a specific embodiment, the frame 8 is provided with two groups of limiting holes 81 along the first direction on the outer sides of the first side 31 and the second side 32. The two groups of limiting holes 81 are named as the first limiting holes and the second limiting holes, respectively, wherein the first limiting holes are relatively close to the chain 3, and the second limiting holes are relatively far from the chain 3.

[0043] When the first side 31 and the second side 32 of the chain 3 are relatively loose, the rotating shaft 7 can be inserted into the first limiting hole so that the tensioning plate 4 can be further approached to the first side 31 or the second side 32 of the chain 3 to increase the tensioning effect on the chain 3.

[0044] When the first side 31 and the second side 32 of the chain 3 are over-tensioned, the rotating shaft 7 can be moved from the first limiting hole to the second limiting hole to make the tensioning plate 4 relatively away from the first side 31 or the second side 32 of the chain 3, thereby reducing the tension of the tensioning plate 4 on the chain 3.

[0045] In one or more embodiments, a contact protrusion 43 is formed on the tensioning plate 4, and the contact protrusion 43 is used to abut against the roller of the chain 3. Through this arrangement, it is possible to avoid direct friction of the chain 3 on the tensioning plate 4, thereby extending the service life of the tensioning plate 4 and the chain 3.

[0046] In one or more embodiments, the two tensioning plates 4 are symmetrically arranged. In other possible embodiments, the two tensioning plates 4 may also be staggered, which is not specifically limited.

[0047] In one or more embodiments, the tensioning plate 4 is made of nylon.

[0048] It should be noted that nylon has excellent wear resistance and high strength. Through this arrangement, the service life of the tension plate 4 can be extended.

[0049] In one or more embodiments, the fixing plate 6 is made of iron or steel.

[0050] The above implementation modes are only for illustrating the technical concept and features of the utility model, and their purpose is to allow people familiar with this technology to understand the content of the utility model and implement it. It cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A double-sided automatic chain tensioning mechanism, characterized in that: include: A first sprocket, a second sprocket and a chain, wherein the chain is disposed on the first sprocket and the second sprocket so that the chain has a first side and a second side opposite to each other; A tensioning plate, wherein the tensioning plate has a rotating end and a tensioning end, and the tensioning plate is configured so that the tensioning end can rotate around the rotating end. The tensioning plate has two tensioning plates and are respectively configured at the first side and the second side. The tensioning ends of the two tensioning plates use the elastic force of the elastic member to respectively press the first side and the second side of the chain.

2. The chain double-sided automatic tensioning mechanism according to claim 1, characterized in that: The tensioning plate is arranged on a fixing plate, and the fixing plate is formed with at least one group of positioning holes opened along a first direction.

3. The double-sided automatic chain tensioning mechanism according to claim 2, characterized in that: The fixing plate is rotatably mounted on the frame body through a rotating shaft at one end close to the rotating end of the tensioning plate.

4. The chain double-sided automatic tensioning mechanism according to claim 2, characterized in that: Each of the fixing plates is provided with three groups of positioning holes along the first direction.

5. The double-sided automatic chain tensioning mechanism according to claim 3, characterized in that: The frame body is provided with at least two groups of limiting holes along a first direction, and the rotating shaft is located in the limiting holes.

6. The chain double-sided automatic tensioning mechanism according to claim 1 or 2, characterized in that: A contact protrusion is formed on the tension plate, and the contact protrusion is used to abut against a roller of the chain.

7. The double-sided automatic chain tensioning mechanism according to claim 1, characterized in that: The elastic member is a hook spring.

8. The chain double-sided automatic tensioning mechanism according to claim 1, characterized in that: The two tensioning plates are symmetrically arranged.

9. The chain double-sided automatic tensioning mechanism according to claim 1, characterized in that: The tensioning plate is made of nylon.

10. The double-sided automatic chain tensioning mechanism according to claim 2, characterized in that: The fixing plate is made of iron or steel.

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