Novel dynamic tensioning mechanism

Abstract

The utility model relates to the technical field of tensioning mechanisms, in particular to a novel dynamic tensioning mechanism which comprises a workbench, a rectangular groove is formed in the bottom of the workbench, a movable plate is arranged in the rectangular groove, a spring is fixedly connected to the outer wall of the movable plate, the other end of the spring is fixedly connected with the inner wall of the rectangular groove, a sliding groove is formed in the opposite face of the movable plate, and a sliding block is installed in the sliding groove. The outer walls of the sliding blocks are fixedly connected with U-shaped plates, the two obliquely-opposite U-shaped plates are connected through linkage rods, the outer walls of the linkage rods are movably connected with the inner walls of the obliquely-opposite U-shaped plates, a hollow groove is formed in the left linkage rod, rotating holes are formed in the middles of the two linkage rods, the top of the inner wall of the rectangular groove is fixedly connected with a fixing column, and the tops of the two movable plates are fixedly connected with a base. The top of the base is movably connected with a tensioning wheel. According to the utility model, the phenomena of tooth skipping and slipping of the belt caused by the increase of the perimeter of the belt along with the increase of the service life can be avoided, and the transmission precision of a transmission part is improved.

Description

Technical Field

[0001] The utility model relates to the field of tensioning mechanisms, in particular to a novel dynamic tensioning mechanism. Background Art

[0002] The tensioner acts on the timing belt of the engine to guide and tighten it, so that it is always in the best tension state. The tensioner is widely used in the food and beverage packaging production line.

[0003] The belt or timing chain is mainly responsible for connecting the two transmission parts in mechanical transmission so that the two transmission parts can rotate synchronously. However, after long-term use, the circumference of the belt will slowly increase with the increase of service life, causing the belt to jump teeth and produce transmission errors. At the same time, slippage may also occur, affecting the synchronous rotation of the transmission parts. Summary of the invention

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a new type of dynamic tensioning mechanism.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a novel dynamic tensioning mechanism, including a workbench, a rectangular groove is provided at the bottom of the workbench, two movable plates are arranged inside the rectangular groove, the outer walls of the two movable plates are fixedly connected with a plurality of springs, the other ends of the plurality of springs are fixedly connected with the inner wall of the rectangular groove, and the opposite surfaces of the two movable plates are provided with a slide groove, two sliders are installed inside the slide groove, the outer walls of the two sliders are fixedly connected with a U-shaped plate, the two obliquely opposite U-shaped plates are connected by a linkage rod, the outer walls of the two ends of the linkage rod are respectively movably connected with the inner walls of the two obliquely opposite U-shaped plates, the two linkage rods are cross-distributed, a hollow groove is provided inside the linkage rod on the left side, the linkage rod on the right side passes through the interior of the hollow groove, a rotating hole is provided in the middle of the two linkage rods, a fixed column is fixedly connected to the top of the inner wall of the rectangular groove, the fixed column sequentially passes through the rotating holes inside the two linkage rods, a stopper is fixedly connected to the bottom of the fixed column, the tops of the two movable plates are fixedly connected with a base, and the top of the base is movably connected with a tensioning wheel.

[0006] As a further description of the above technical solution:

[0007] The inner walls on both sides of the rectangular groove are provided with limiting grooves, and the outer walls on both sides of the two movable plates are fixedly connected with limiting blocks, and the limiting blocks are located inside the limiting grooves.

[0008] As a further description of the above technical solution:

[0009] A movable groove is provided on the top of the workbench, and the movable grooves are all connected with the rectangular grooves, and the base is located inside the movable grooves.

[0010] As a further description of the above technical solution:

[0011] A motor is fixedly connected to the bottom of the workbench, a driving shaft is fixedly connected to the output end of the motor, the driving shaft passes through the top of the workbench and is fixedly connected to a driving wheel, a driven wheel is arranged at the top right end of the workbench, a connecting shaft is fixedly connected to the top of the driven wheel, a rotating roller is fixedly connected to the top of the connecting shaft, and the driving wheel and the driven wheel are connected by a belt.

[0012] As a further description of the above technical solution:

[0013] The motor is located at the top left end of the workbench, the rotating roller is located at the bottom right end of the workbench, and the rectangular groove is located in the middle of the motor and the rotating roller.

[0014] As a further description of the above technical solution:

[0015] A plurality of supporting legs are fixedly connected to the bottom of the workbench, and two adjacent supporting legs are connected via reinforcing ribs.

[0016] The utility model has the following beneficial effects:

[0017] 1. In the initial state, multiple springs are in a state of compression and rebound, so that the two tensioning wheels are respectively close to the outer wall of the belt. The circumference of the belt will slowly increase with the increase of service life. After the circumference of the belt becomes longer, multiple springs are still in the process of compression and rebound, so that the two moving plates are relatively close to each other. When the two moving plates are relatively close, the two sliders in the slide grooves opened on the inner walls of the two moving plates move back to back. Since the two linkage rods are in a mutually crossed state and a fixed column passes through the two linkage rods respectively, the two sliders inside the slide grooves opened on the inner wall of the other moving plate move back to back, realizing the function of the two moving plates being relatively close to each other synchronously. When the two moving plates are relatively close, the tops of the two moving plates The connected base and the tensioning wheel movably connected to the top of the base move together with the movable plate, so that the two tensioning wheels are always close to the belt, so that the belt is always kept in a tensioned state, avoiding the belt from jumping teeth and slipping due to the increase in the circumference of the belt as the service life increases, thereby improving the transmission accuracy of the transmission parts. In the prior art, after long-term use, the circumference of the belt will slowly increase with the increase in the service life, causing the belt to jump teeth and produce transmission errors, and may also slip, affecting the synchronous rotation of the transmission parts. This device avoids the belt from jumping teeth and slipping due to the increase in the circumference of the belt as the service life increases, thereby improving the transmission accuracy of the transmission parts.

[0018] 2. By opening limit grooves on the inner walls on both sides of the rectangular groove, and fixing limit blocks on the outer walls on both sides of the two movable plates, and the limit blocks are located inside the limit grooves, the movement process of the two movable plates is smoother, and two movable grooves are opened on the top of the workbench. When the movable plate moves, the base moves along the movable grooves, and cooperates with the limit grooves to ensure the stability of the movable plate, the base and the tensioning wheel during the movement process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of the utility model from a first viewing angle;

[0020] Figure 2 This is a schematic diagram of the top structure of the workbench of the utility model;

[0021] Figure 3 This is a schematic diagram of the rectangular slot structure of the utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the movable plate of the utility model;

[0023] Figure 5 It is a schematic diagram of the linkage rod structure of the utility model;

[0024] Figure 6 It is a schematic diagram of the internal structure of the utility model.

[0025] Legend:

[0026] 1. Workbench; 2. Rectangular groove; 3. Moving plate; 4. Spring; 5. Slide groove; 6. Sliding block; 7. U-shaped plate; 8. Linkage rod; 9. Hollow groove; 10. Rotating hole; 11. Fixed column; 12. Block; 13. Base; 14. Tensioner; 15. Limiting groove; 16. Limiting block; 17. Moving groove; 18. Motor; 19. Driving shaft; 20. Driving wheel; 21. Driven wheel; 22. Connecting shaft; 23. Rotating roller; 24. Belt; 25. Support foot; 26. Reinforcing rib. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0028] Reference Figure 1-6The utility model provides a novel dynamic tensioning mechanism: comprising a workbench 1, a rectangular groove 2 is provided at the bottom of the workbench 1, a movable plate 3 is arranged inside the rectangular groove 2, and the number of movable plates 3 is two, the outer walls of the two movable plates 3 are fixedly connected with springs 4, and the number of springs 4 is respectively multiple, and the other ends of the multiple springs 4 are fixedly connected to the inner wall of the rectangular groove 2, and the opposite surfaces of the two movable plates 3 are provided with slide grooves 5, and sliders 6 are installed inside the slide grooves 5, and the number of sliders 6 is two, and the outer walls of the two sliders 6 are fixedly connected with U-shaped plates 7, and the two U-shaped plates 7 obliquely opposite to each other are linked by linkage The two movable plates 3 are connected to each other by a plurality of rods 8, and the outer walls at both ends of the linkage rod 8 are movably connected to the inner walls of the two U-shaped plates 7 which are obliquely opposite to each other. The two linkage rods 8 are cross-distributed, and a hollow groove 9 is opened inside the left linkage rod 8, and the right linkage rod 8 passes through the inside of the hollow groove 9. A rotating hole 10 is opened in the middle of the two linkage rods 8, and a fixing column 11 is fixedly connected to the top of the inner wall of the rectangular groove 2, and the fixing column 11 passes through the rotating holes 10 inside the two linkage rods 8 in turn. A stopper 12 is fixedly connected to the bottom of the fixing column 11, and a base 13 is fixedly connected to the top of the two movable plates 3, and a tensioning wheel 14 is movably connected to the top of the base 13.

[0029] When the two moving plates 3 are relatively close to each other, the two sliders 6 in the slide groove 5 opened on the inner wall of the two moving plates 3 move away from each other. Since the two linkage rods 8 are in a mutually crossed state and a fixed column 11 passes through the two linkage rods 8 respectively, the two sliders 6 inside the slide groove 5 opened on the inner wall of the other moving plate 3 move away from each other, realizing the function of synchronously approaching the two moving plates 3. When the two moving plates 3 are relatively close to each other, the base 13 connected to the top of the two moving plates 3 and the tensioning wheel 14 movably connected to the top of the base 13 move together with the moving plate 3, thereby making the two tensioning wheels 14 always close to the belt 24, so that the belt 24 is always kept in a tensioned state, avoiding the occurrence of tooth skipping and slipping of the belt 24 caused by the increase in the circumference of the belt 24 with the increase in the service life.

[0030] In one embodiment, if Figure 6As shown, limiting grooves 15 are provided on both side inner walls of the rectangular groove 2, and limiting blocks 16 are fixedly connected to both side outer walls of the two movable plates 3. The limiting blocks 16 are located inside the limiting grooves 15, so that the movement process of the two movable plates 3 is smoother. A movable groove 17 is provided on the top of the workbench 1, and there are two movable grooves 17. Both movable grooves 17 are connected with the rectangular groove 2. The base 13 is located inside the movable groove 17. When the movable plate 3 moves, the base 13 moves along the movable groove 17, and cooperates with the limiting groove 15 to jointly ensure the stability of the movable plate 3, the base 13 and the tensioning wheel 14 during the movement process.

[0031] In one embodiment, if Figure 6 As shown, a motor 18 is fixedly connected to the bottom of the workbench 1, and a driving shaft 19 is fixedly connected to the output end of the motor 18. The driving shaft 19 passes through the top of the workbench 1 and is fixedly connected to a driving wheel 20. A driven wheel 21 is arranged at the top right end of the workbench 1, and a connecting shaft 22 is fixedly connected to the top of the driven wheel 21, and a rotating roller 23 is fixedly connected to the top of the connecting shaft 22. The driving wheel 20 and the driven wheel 21 are connected by a belt 24. The operation of the motor 18 drives the driving wheel 20 to rotate, and the driving wheel 20 and the driven wheel 21 are connected by a belt 24, so that the driven wheel 21 and the driving wheel 20 rotate synchronously, and then the rotating roller 23 rotates together. The motor 18 is located at the top left end of the workbench 1, the rotating roller 23 is located at the bottom right end of the workbench 1, and the rectangular groove 2 is located in the middle of the motor 18 and the rotating roller 23.

[0032] In one embodiment, if Figure 2 As shown, a support leg 25 is fixedly connected to the bottom of the workbench 1 , and there are multiple support legs 25 , and two adjacent support legs 25 in front and behind are connected by a reinforcing rib 26 .

[0033] The working principle of the utility model is as follows: in the initial state, the multiple springs 4 are in a state of compression and rebound, so that the two tension wheels 14 are respectively close to the outer wall of the belt 24. The circumference of the belt 24 will slowly increase with the increase of service life. After the circumference of the belt 24 becomes longer, the multiple springs 4 are still in the process of compression and rebound, so that the two moving plates 3 are relatively close. When the two moving plates 3 are relatively close, the two sliders 6 in the chute 5 opened on the inner wall of the two moving plates 3 move back to back. Since the two linkage rods 8 are in a mutually crossed state and are respectively connected by a fixed column 11, the two linkage rods 8 are in a mutually crossed state and are respectively connected by a fixed column 11. The two linkage rods 8 are penetrated, so that the two sliders 6 inside the slide groove 5 opened on the inner wall of the other movable plate 3 move back to back, so that the two movable plates 3 can be synchronously approached to each other. When the two movable plates 3 are relatively close, the base 13 connected to the top of the two movable plates 3 and the tensioning wheel 14 movably connected to the top of the base 13 move together with the movable plate 3, so that the two tensioning wheels 14 are always in close contact with the belt 24, so that the belt 24 is always kept in a tensioned state, thereby avoiding the occurrence of tooth jumping and slipping of the belt 24 due to the increase in the circumference of the belt 24 due to the increase in the service life.

[0034] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A novel dynamic tensioning mechanism, comprising a workbench (1), characterized in that: The bottom of the workbench (1) is provided with a rectangular groove (2), two movable plates (3) are arranged inside the rectangular groove (2), the outer walls of the two movable plates (3) are fixedly connected with a plurality of springs (4), the other ends of the plurality of springs (4) are fixedly connected with the inner wall of the rectangular groove (2), the opposite surfaces of the two movable plates (3) are provided with a slide groove (5), the inside of the slide groove (5) is provided with two sliders (6), the outer walls of the sliders (6) are fixedly connected with a U-shaped plate (7), the two obliquely opposite U-shaped plates (7) are connected by a linkage rod (8), the outer walls of the two ends of the linkage rod (8) are respectively connected with the inner wall of the two obliquely opposite U-shaped plates (7), and the inner wall of the two ends of the linkage rod (8) is connected with the inner wall of the two obliquely opposite U-shaped plates (7). The walls are movably connected, the two linkage rods (8) are cross-distributed, a hollow groove (9) is provided inside the left linkage rod (8), the right linkage rod (8) passes through the inside of the hollow groove (9), a rotation hole (10) is provided in the middle of the two linkage rods (8), a fixing column (11) is fixedly connected to the top of the inner wall of the rectangular groove (2), the fixing column (11) passes through the rotation holes (10) inside the two linkage rods (8) in sequence, a stopper (12) is fixedly connected to the bottom of the fixing column (11), the tops of the two movable plates (3) are fixedly connected to a base (13), and the top of the base (13) is movably connected to a tensioning wheel (14).

2. A novel dynamic tensioning mechanism according to claim 1, characterized in that: Limiting grooves (15) are provided on both inner walls of the rectangular groove (2), and limiting blocks (16) are fixedly connected to both outer walls of the two movable plates (3), wherein the limiting blocks (16) are located inside the limiting grooves (15).

3. A novel dynamic tensioning mechanism according to claim 1, characterized in that: A movable groove (17) is provided on the top of the workbench (1), the movable groove (17) is connected to the rectangular groove (2), and the base (13) is located inside the movable groove (17).

4. A novel dynamic tensioning mechanism according to claim 3, characterized in that: The bottom of the workbench (1) is fixedly connected to a motor (18), the output end of the motor (18) is fixedly connected to a drive shaft (19), the drive shaft (19) passes through the top of the workbench (1) and is fixedly connected to a drive wheel (20), a driven wheel (21) is provided at the right end of the top of the workbench (1), the top of the driven wheel (21) is fixedly connected to a connecting shaft (22), the top of the connecting shaft (22) is fixedly connected to a rotating roller (23), and the driving wheel (20) and the driven wheel (21) are connected via a belt (24).

5. A novel dynamic tensioning mechanism according to claim 4, characterized in that: The motor (18) is located at the top left end of the workbench (1), the rotating roller (23) is located at the bottom right end of the workbench (1), and the rectangular groove (2) is located between the motor (18) and the rotating roller (23).

6. A novel dynamic tensioning mechanism according to claim 1, characterized in that: A plurality of supporting legs (25) are fixedly connected to the bottom of the workbench (1), and two adjacent supporting legs (25) are connected via reinforcing ribs (26).

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