Tensioning device

Abstract

The utility model discloses a tensioning device, which belongs to the technical field of belt transmission accessories and comprises a first U-shaped groove, a second U-shaped groove, an elastic guide part and a tensioning wheel. The groove bottom of the second U-shaped groove is elastically connected with the groove bottom of the first U-shaped groove through an elastic guide piece, and the second U-shaped groove can move in the first U-shaped groove in a reciprocating mode. The opening direction of the first U-shaped groove is consistent with that of the second U-shaped groove; the tensioning wheel is hinged to the interior of the second U-shaped groove. The second U-shaped groove is connected to the interior of the first U-shaped groove through the elastic guiding piece, so that the space occupied by additional supporting pieces can be reduced, and the tensioning device can be well applied to occasions with small installation space; and through the guiding effect of the elastic guiding piece, the second U-shaped groove can directionally move in the first U-shaped groove when being driven by the tensioning wheel, and then the overall stability is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of belt transmission accessories, and particularly relates to a tensioning device. Background Art

[0002] The tensioning end of the existing belt tensioning structure is often made of elastic materials such as rubber, and the corresponding structure feeds back the force of the belt to the rubber, and then the reverse elastic force generated by the rubber deformation is reapplied to the belt, thereby tensioning the belt to improve the overall transmission efficiency.

[0003] However, in actual use, it was found that this type of tensioning structure is complicated to install due to the large number of parts and components, and is not suitable for occasions with short transmission strokes and small installation spaces. For occasions with long transmission strokes, not only is the elasticity of the rubber limited and unable to meet the set expansion and contraction requirements, but the belt may also fall off due to tooth scratching due to the uncertain deformation direction of the rubber. Moreover, when the rubber ages, there is a risk of losing elasticity, thereby affecting the tensioning efficiency and reducing the overall transmission efficiency. Utility Model Content

[0004] The technical problem to be solved by the utility model is: how to provide a tensioning device which can improve the tensioning stability on the basis of ensuring the tensioning effect.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A tensioning device comprises a first U-shaped groove, a second U-shaped groove, an elastic guide and a tensioning wheel;

[0007] The bottom of the second U-shaped groove is elastically connected to the bottom of the first U-shaped groove through an elastic guide, and the second U-shaped groove can reciprocate inside the first U-shaped groove;

[0008] The opening direction of the first U-shaped groove is consistent with the opening direction of the second U-shaped groove;

[0009] The tensioning wheel is hinged inside the second U-shaped groove.

[0010] Further, the elastic guide member includes a guide column and a spring;

[0011] A guide hole is provided at the bottom of the first U-shaped groove;

[0012] One end of the guide column is connected to the bottom of the second U-shaped groove;

[0013] The other end of the guide column passes through the guide hole, and the outer cylindrical surface of the guide column is slidably connected to the guide hole;

[0014] The spring is arranged between the groove bottom of the first U-shaped groove and the groove bottom of the second U-shaped groove, and the spring is sleeved on the outer side of the guide column.

[0015] Further, it also includes a rotating shaft;

[0016] Both side walls of the first U-shaped groove are provided with guide limit holes;

[0017] The tension wheel is hinged to the side wall of the second U-shaped groove through a rotating shaft;

[0018] Both ends of the rotating shaft penetrate the side walls of the second U-shaped groove and are slidably connected to the corresponding guide limiting holes respectively.

[0019] Furthermore, the guide limiting hole is an oblong hole;

[0020] The extending direction of the guide limiting hole is parallel to the axis of the guide column.

[0021] Furthermore, the first U-shaped groove is also provided with an adjustment frame;

[0022] The adjusting frame is provided with an adjusting hole;

[0023] The adjusting hole is an oblong hole;

[0024] The extending direction of the adjusting hole is parallel to the telescopic direction of the elastic guide member.

[0025] Furthermore, the number of the adjustment holes is at least two;

[0026] The extension directions of all the adjustment holes are parallel to each other.

[0027] The beneficial effects of the present invention are as follows: the tensioning device provided by the present invention connects the second U-shaped groove to the inside of the first U-shaped groove through an elastic guide member, which can reduce the space occupied by setting up additional support members, so that the tensioning device of the present invention can be better used in occasions with a small installation space; and through the guiding effect of the elastic guide member, the second U-shaped groove can be directed to move in the first U-shaped groove when driven by the tensioning wheel, thereby improving the overall stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The figure shows a schematic structural diagram of a first U-shaped groove according to a specific embodiment of the utility model;

[0029] Figure 2 The figure shows a schematic diagram of the structure of the second U-shaped groove of a specific embodiment of the utility model;

[0030] Figure 3 The figure shows a schematic structural diagram of the first U-shaped groove and the second U-shaped groove after being assembled in a specific embodiment of the utility model;

[0031] Figure 4 The figure shows a front view of the first U-shaped groove and the second U-shaped groove after being assembled in a specific embodiment of the utility model;

[0032] Description of labels:

[0033] 1. first U-shaped groove; 11. guide hole; 12. guide limit hole; 13. adjustment frame; 131. adjustment hole;

[0034] 2. Second U-shaped groove;

[0035] 3. elastic guide member; 31. guide column; 32. spring;

[0036] 4. Tensioner;

[0037] 5. Rotating shaft. DETAILED DESCRIPTION

[0038] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0039] The most critical concept of the present invention is that the second U-shaped groove is connected to the inside of the first U-shaped groove through an elastic guide member, which can reduce the space occupied by the additional support member, so that the tensioning device can be better used in occasions with a small installation space; and through the guiding effect of the elastic guide member, the second U-shaped groove can be directed to move in the first U-shaped groove when driven by the tensioning wheel, thereby improving the overall stability.

[0040] Please refer to Figures 1 to 4 The tensioning device provided by the utility model comprises a first U-shaped groove 1, a second U-shaped groove 2, an elastic guide 3 and a tensioning wheel 4;

[0041] The bottom of the second U-shaped groove 2 is elastically connected to the bottom of the first U-shaped groove 1 through an elastic guide 3, and the second U-shaped groove 2 can reciprocate inside the first U-shaped groove 1;

[0042] The opening direction of the first U-shaped groove 1 is consistent with the opening direction of the second U-shaped groove 2;

[0043] The tensioning wheel 4 is hinged inside the second U-shaped groove 2 .

[0044] From the above description, it can be seen that the beneficial effects of the utility model are: providing a tensioning device, connecting the second U-shaped groove 2 to the inside of the first U-shaped groove 1 through an elastic guide member 3, which can reduce the space occupied by setting up additional support members, so that the tensioning device of the utility model can be better used in occasions with smaller installation space; compared with the existing tensioning devices, because the existing tensioning devices usually use rubber as an elastic member, when used, not only will the belt teeth fall off due to the uncertain deformation direction of the rubber, but also after the rubber ages, it will lose its elasticity, thereby affecting the tensioning efficiency; and the tensioning device of the utility model, through the guiding effect of the elastic guide member 3, can make the second U-shaped groove 2 move in a directional manner in the first U-shaped groove 1 when driven by the tensioning wheel 4, thereby improving the overall stability.

[0045] Further, the elastic guide member 3 includes a guide column 31 and a spring 32;

[0046] A guide hole 11 is provided at the bottom of the first U-shaped groove 1;

[0047] One end of the guide post 31 is connected to the bottom of the second U-shaped groove 2;

[0048] The other end of the guide post 31 passes through the guide hole 11, and the outer circumferential surface of the guide post 31 is slidably connected to the guide hole 11;

[0049] The spring 32 is disposed between the bottom of the first U-shaped groove 1 and the bottom of the second U-shaped groove 2 , and the spring 32 is sleeved on the outer side of the guide column 31 .

[0050] From the above description, it can be seen that the design has made specific modifications to the component structure of the elastic guide 3, so as to provide structural support for the second U-shaped groove 2 to be able to move in a directional manner inside the first U-shaped groove 1 after being driven by the tensioning wheel 4, thereby avoiding the tensioning wheel 4 from being offset during the tensioning process, resulting in the belt and the tensioning wheel 4 cutting off and falling off, thereby affecting the stability during tensioning adjustment.

[0051] Furthermore, the above-mentioned tensioning device further includes a rotating shaft 5;

[0052] Both side walls of the first U-shaped groove 1 are provided with guide limit holes 12;

[0053] The tension wheel 4 is hinged to the side wall of the second U-shaped groove 2 through the rotating shaft 5;

[0054] Both ends of the rotating shaft 5 penetrate the side walls of the second U-shaped groove 2 and are slidably connected to the corresponding guide limiting holes 12 respectively.

[0055] Furthermore, the guide limit hole 12 is an oblong hole;

[0056] The extending direction of the guide limit hole 12 is parallel to the axis of the guide column 31 .

[0057] From the above description, it can be seen that the design has made further improvements to the composition structure of the first U-shaped groove 1 and the tensioning wheel 4. Through the cooperation between the rotating shaft 5 and the guide limit hole 12, the movement trajectory of the second U-shaped groove 2 can be made unique, thereby better improving the stability of the tensioning device of the utility model during operation.

[0058] Furthermore, the first U-shaped groove 1 is also provided with an adjustment frame 13;

[0059] The adjustment frame 13 is provided with an adjustment hole 131;

[0060] The adjustment hole 131 is an oblong hole;

[0061] The extending direction of the adjustment hole 131 is parallel to the telescopic direction of the elastic guide member 3 .

[0062] From the above description, it can be seen that this design can facilitate the staff to adjust the position of the tensioning device according to actual needs, so that the tensioning device of the utility model can better fit the belt, thereby ensuring that the transmission efficiency of the equipment can meet the design requirements.

[0063] Further, the number of the adjustment holes 131 is at least two;

[0064] The extending directions of all the adjustment holes 131 are parallel to each other.

[0065] From the above description, it can be seen that this design enables the tensioning device of the present application to be adjusted only along the telescopic direction of the elastic guide member 3. While ensuring that the staff can adjust the position of the tensioning device, it can also limit the tensioning device, that is, to prevent the tensioning device from being subjected to external force during operation, causing the tensioning device to move around the locking member that locks itself, thereby further improving the overall stability.

[0066] The tensioning device of the utility model can be combined with various flexible transmission systems to assist in tensioning work, and is particularly suitable for transmission systems with short transmission strokes or small installation spaces.

[0067] Please refer to Figures 1 to 4 , Embodiment 1 of the present utility model is:

[0068] A tensioning device comprises a first U-shaped groove 1, a second U-shaped groove 2, an elastic guide 3, a rotating shaft 5 and a tensioning wheel 4; the groove bottom of the second U-shaped groove 2 is elastically connected to the groove bottom of the first U-shaped groove 1 through the elastic guide 3, and the second U-shaped groove 2 can reciprocate inside the first U-shaped groove 1; the opening direction of the first U-shaped groove 1 is consistent with the opening direction of the second U-shaped groove 2; the tensioning wheel 4 is hinged inside the second U-shaped groove 2; both side walls of the first U-shaped groove 1 are provided with guide limit holes 12; the tensioning wheel 4 is hinged to the side walls of the second U-shaped groove 2 through the rotating shaft 5; both ends of the rotating shaft 5 pass through the side walls of the second U-shaped groove 2 and are respectively slidably connected to the corresponding guide limit holes 12; the guide limit holes 12 are oblong holes; the extension direction of the guide limit holes 12 is parallel to the axis of the guide column 31.

[0069] The elastic guide member 3 includes a guide column 31 and a spring 32; a guide hole 11 is provided at the bottom of the first U-shaped groove 1; one end of the guide column 31 is connected to the bottom of the second U-shaped groove 2; the other end of the guide column 31 passes through the guide hole 11, and the outer cylindrical surface of the guide column 31 is slidably connected to the guide hole 11; the spring 32 is arranged between the bottom of the first U-shaped groove 1 and the bottom of the second U-shaped groove 2, and the spring 32 is sleeved on the outer side of the guide column 31.

[0070] The first U-shaped groove 1 is also provided with an adjustment frame 13; the adjustment frame 13 is provided with an adjustment hole 131; the adjustment hole 131 is an oblong hole; the extension direction of the adjustment hole 131 is parallel to the extension direction of the elastic guide member 3; the number of the adjustment holes 131 is two; the extension directions of all the adjustment holes 131 are parallel to each other.

[0071] The working principle of the utility model is as follows: when the tensioning wheel 4 is subjected to force, the external force can be guided to the elastic guide member 3 through the second U-shaped groove 2; and then through the expansion and contraction of the spring 32, the relative movement between the guide column 31 and the guide hole 11, and the relative movement between the rotating shaft 5 and the guide limit hole 12, the tensioning wheel 4 can change its position in the first U-shaped groove 1 according to the change of the external force, so that the tensioning degree of the transmission system always meets the design requirements.

[0072] In summary, the utility model provides a tensioning device, which connects the second U-shaped groove to the inside of the first U-shaped groove through an elastic guide member, thereby reducing the space occupied by setting up additional support members, so that the tensioning device of the utility model can be better used in occasions with smaller installation space; compared with the existing tensioning devices, because the existing tensioning devices usually use rubber as an elastic member, when used, not only will the belt teeth fall off due to the uncertain deformation direction of the rubber, but also after the rubber ages, it will lose its elasticity, thereby affecting the tensioning efficiency; and the tensioning device of the utility model, through the sliding connection between the guide column and the guide hole, and the sliding connection between the rotating shaft and the guide limit hole, can make the second U-shaped groove when driven by the tensioning wheel, can be directed to move in the first U-shaped groove along a unique and determined telescopic path, thereby improving the overall stability.

[0073] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A tensioning device, characterized in that: It includes a first U-shaped groove, a second U-shaped groove, an elastic guide and a tensioning wheel; The bottom of the second U-shaped groove is elastically connected to the bottom of the first U-shaped groove through an elastic guide, and the second U-shaped groove can reciprocate inside the first U-shaped groove; The opening direction of the first U-shaped groove is consistent with the opening direction of the second U-shaped groove; The tensioning wheel is hinged inside the second U-shaped groove.

2. The tensioning device according to claim 1, characterized in that: The elastic guide member comprises a guide column and a spring; A guide hole is provided at the bottom of the first U-shaped groove; One end of the guide column is connected to the bottom of the second U-shaped groove; The other end of the guide column passes through the guide hole, and the outer cylindrical surface of the guide column is slidably connected to the guide hole; The spring is arranged between the groove bottom of the first U-shaped groove and the groove bottom of the second U-shaped groove, and the spring is sleeved on the outer side of the guide column.

3. The tensioning device according to claim 2, characterized in that: Also includes a rotating shaft; Both side walls of the first U-shaped groove are provided with guide limit holes; The tension wheel is hinged to the side wall of the second U-shaped groove through a rotating shaft; Both ends of the rotating shaft penetrate the side walls of the second U-shaped groove and are slidably connected to the corresponding guide limiting holes respectively.

4. The tensioning device according to claim 3, characterized in that: The guide limiting hole is an oblong hole; The extending direction of the guide limiting hole is parallel to the axis of the guide column.

5. The tensioning device according to claim 1, characterized in that: The first U-shaped groove is also provided with an adjustment frame; The adjusting frame is provided with an adjusting hole; The adjusting hole is an oblong hole; The extending direction of the adjusting hole is parallel to the telescopic direction of the elastic guide member.

6. The tensioning device according to claim 5, characterized in that: The number of the adjustment holes is at least two; The extension directions of all the adjustment holes are parallel to each other.

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