Novel belt tensioning mechanism device

Abstract

According to the novel belt tensioning mechanism device, the compressed spring is adopted, the position of the outer side of the compressed spring is changed by adjusting the position of the end sleeve directly connected with the end face of the outer side of the compressed spring, the compressed spring moves, and the tensioning wheel installed on the sliding rail is driven to move; a guide shaft penetrating through a spring inner hole is adjusted, the distance between the sliding rail end face connected with the left side end face of the compression spring and the end sleeve end face connected with the right side end face of the compression spring is changed, and deformation of the compression spring is controlled; by adjusting and controlling the movement and deformation of the pressure spring, the pressing degree of the tensioning wheel and the belt is changed, and the purpose of applying accurate tensioning force to the belt is achieved.

Description

Technical Field

[0001] The utility model relates to a field, in particular to a novel belt tensioning mechanism device. Background Art

[0002] Agricultural machinery works in a harsh environment, and the power fluctuations transmitted by its belt transmission mechanism are also large. Under such working conditions, a belt tensioning mechanism with stable operation, high reliability and the ability to buffer fluctuating forces is required. At present, when a spring is used to tension the mechanism, the general assembly method of the spring is that one end is fixed and the other end moves with the mechanism. When the preload force needs to be precisely controlled to ensure that the belt works under the optimal tension force, the spring assembly method of this belt transmission mechanism is difficult to adjust.

[0003] The utility model with application number "202321055408.X" discloses a belt tensioning mechanism, including a front buckle plate, a rear buckle plate, a slider, a compression spring, a fastener I, a fastener II, a base and an adjusting screw rod, wherein the rear buckle plate and the front buckle plate are connected by fastener I, the front buckle plate and the rear buckle plate are installed on the base and connected to the base by fastener II, and both the front buckle plate and the rear buckle plate are machined with a middle groove, and the front buckle plate and the rear buckle plate form a square guide rail by the middle groove that is buckled. Compared with the existing rocker arm tensioning mechanism, the utility model has a relatively simple structure and saves the space required for the layout of the mechanical mechanism, but the utility model cannot accurately control the preload force to ensure that the belt works under the optimal tension force. Utility Model Content

[0004] In order to solve the above problems, the utility model proposes a new belt tensioning mechanism device. Its technical solution is:

[0005] A novel belt tensioning mechanism device, characterized in that it includes a driven pulley, a belt, a driving pulley, a first bolt, a first nut, a second bolt, a second nut, an end sleeve, a limit plate, a slide rail seat, a tensioning wheel shaft, a third nut, a slide rail, a compression spring, a guide shaft, an adjustment plate, a third bolt, a spacer, a retaining spring, a fourth bolt, a washer, a tensioning wheel, a ball bearing, and a fourth nut; the driving pulley is connected to the driven pulley through a belt; the limit plate and the end sleeve are fixed to the right end of the guide shaft through the third bolt, and the adjustment The whole plate is inserted into the guide shaft, aligned with the threaded hole of the end sleeve, and connected with the first bolt, the first nut, the second bolt, and the second nut; the compression spring is inserted into the guide shaft; the fourth nut welded to the slide rail is screwed into the left side of the guide shaft; the upper part of the tensioning wheel shaft is inserted into the hollow guide groove of the slide rail seat and the threaded hole at the left end of the slide rail, and fastened with the third nut; the tensioning wheel is inserted into the tensioning wheel shaft; a ball bearing is arranged between the tensioning wheel and the tensioning wheel shaft; a retaining ring and a washer are installed at the bottom of the tensioning wheel and fixed with the fourth bolt.

[0006] Furthermore, the upper surface of the tension wheel shaft is provided with threads, and the lower center is provided with a threaded hole.

[0007] Furthermore, the length of the compression spring can be adjusted by adjusting the distance between the first bolt and the first nut, and the distance between the second bolt and the second nut on the adjustment plate.

[0008] Furthermore, the compression spring drives the slide rail and the tensioning wheel to move left and right under the action of its own tension.

[0009] Furthermore, the guide shaft rotates, causing the guide shaft and the slide rail to move relative to each other, thereby changing the deformation of the compression spring.

[0010] Furthermore, the guide shaft rotates clockwise, the compression spring becomes shorter, and the slide rail moves the tension wheel away from the belt.

[0011] Furthermore, the guide shaft rotates counterclockwise, the compression spring becomes longer, and the slide rail brings the tension wheel closer to the belt.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model adopts a compression spring. By adjusting the position of the end sleeve directly connected to the outer end face of the compression spring, the outer position of the compression spring is changed to realize the movement of the compression spring, drive the tensioning wheel installed on the slide rail to move, adjust the degree of tension between the tensioning wheel and the belt, and reduce the difficulty of assembling the spring.

[0014] 2. The utility model changes the degree of compression between the tensioning wheel and the belt and applies precise tension to the belt by regulating and controlling the movement and deformation of the compression spring separately or in combination. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a top view of the belt tensioning mechanism device;

[0016] Figure 2 It is a cross-sectional view of the belt tensioning mechanism device;

[0017] Figure 3 An axonometric diagram of the belt tensioning mechanism;

[0018] In the figure: 1. driven pulley; 2. belt; 3. driving pulley; 4. first bolt; 5. first nut; 6. second bolt; 7. second nut; 8. end sleeve; 9. limit plate; 10. slide rail seat; 11. tensioning wheel shaft; 12. third nut; 13. slide rail; 14. compression spring; 15. guide shaft; 16. adjustment plate; 17. third bolt; 18. spacer; 19. retaining spring; 20. fourth bolt; 21. washer; 22. tensioning wheel; 23. bearing; 24. fourth nut. DETAILED DESCRIPTION

[0019] The following are specific embodiments, and in combination with the accompanying drawings, further describe the technical solution of the utility model. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0020] like Figure 1 , 2 As shown, there are top view and cross-sectional view of the belt tensioning mechanism device, including a driven pulley 1, a belt 2, a driving pulley 3, a first bolt 4, a first nut 5, a second bolt 6, a second nut 7, an end sleeve 8, a limit plate 9, a slide rail seat 10, a tensioning wheel shaft 11, a third nut 12, a slide rail 13, a compression spring 14, a guide shaft 15, an adjustment plate 16, a third bolt 17, a spacer sleeve 18, a retaining spring 19, a fourth bolt 20, a washer sleeve 21, a tensioning wheel 22, a ball bearing 23, and a fourth nut 24.

[0021] The driving pulley 3 is connected to the driven pulley 1 through the belt 2; the limit plate 9 and the end sleeve 8 are fixed to the right end of the guide shaft 15 through the third bolt 17, the adjustment plate 16 is inserted into the guide shaft 15 to the right side, aligned with the threaded hole of the end sleeve 8, and connected by the first bolt 4, the first nut 5, the second bolt 6, and the second nut 7; the compression spring 14 is inserted into the guide shaft 15 to the right side to resist the adjustment plate 16; the outer surface of the left end of the guide shaft 15 is provided with a thread, and the left side of the guide shaft 15 is screwed into the right side welding The slide rail 13 connected to the fourth nut 24 is connected; the upper surface of the tensioning wheel shaft 11 is provided with threads, and a threaded hole is set in the center of the lower part; the upper part of the tensioning wheel shaft 11 is inserted into the hollow guide groove of the slide rail seat 10 and the threaded hole at the left end of the slide rail 13, and is fastened with the third nut 12; the tensioning wheel 22 is inserted into the tensioning wheel shaft 11, and a ball bearing 23 is set between the tensioning wheel 22 and the tensioning wheel shaft 11; the bottom of the tensioning wheel 22 is installed with a retaining spring 19 and a washer 21 and fixed with a fourth bolt 20.

[0022] like Figure 3 As shown, it is an axonometric view of the belt tensioning mechanism. By adjusting the first bolt 4, the first nut 5 and the second bolt 6, the second nut 7 on the adjusting plate 16, the end sleeve 8 moves left or right on the guide shaft 15. The right end face of the compression spring 14 drives the slide rail 13 and the tensioning wheel 22 to move left or right under the action of its own tension, so as to increase or decrease the pressing force on the belt 2.

[0023] The guide shaft 15 is rotated to make the guide shaft 15 and the slide rail 13 move relative to each other, thereby changing the deformation of the compression spring 14. When the guide shaft 15 rotates clockwise, the length of the compression spring 14 decreases, and the slide rail 13 moves the tensioning wheel 22 away from the belt 2, reducing the pressing force on the belt 2. When the guide shaft 15 rotates counterclockwise, the length of the compression spring 14 increases, and the slide rail 13 moves the tensioning wheel 22 closer to the belt 2, increasing the pressing force on the belt 2.

[0024] The axial movement or deformation of the combined adjusting compression spring 14 can accurately control the tensioning force applied by the tensioning wheel 22 to the belt 2.

Claims

1. A new belt tensioning mechanism, characterized in that: The invention comprises a driven pulley (1), a belt (2), a driving pulley (3), a first bolt (4), a first nut (5), a second bolt (6), a second nut (7), an end sleeve (8), a limit plate (9), a slide rail seat (10), a tension wheel shaft (11), a third nut (12), a slide rail (13), a compression spring (14), a guide shaft (15), an adjustment plate (16), a third bolt (17), a spacer sleeve (18), a retaining spring (19), a fourth bolt (20), a washer sleeve (21), a tension wheel (22), a ball bearing (23), and a fourth nut (24); the driving pulley (3) is connected to the driven pulley (1) through the belt (2); the limit plate (9) and the end sleeve (8) are fixed to the right end of the guide shaft (15) through the third bolt (17); the adjustment plate (16) is inserted into the guide shaft (15), aligned with the threaded hole of the end sleeve (8), and connected with the first bolt (4), the first nut (5), the second bolt (6), and the second nut (7); the compression spring (14) is inserted into the guide shaft (15); the fourth nut (24) welded to the slide rail (13) is screwed into the left side of the guide shaft (15); the upper part of the tensioning wheel shaft (11) is inserted into the hollow guide groove of the slide rail seat (10) and the threaded hole at the left end of the slide rail (13), and is fastened with the third nut (12); the tensioning wheel (22) is inserted into the tensioning wheel shaft (11); a ball bearing (23) is arranged between the tensioning wheel (22) and the tensioning wheel shaft (11); a retaining ring (19) and a washer (21) are installed at the bottom of the tensioning wheel (22) and fixed with the fourth bolt (20).

2. A novel belt tensioning mechanism device according to claim 1, characterized in that: The upper surface of the tension wheel shaft (11) is provided with threads, and the center of the lower part is provided with a threaded hole.

3. A novel belt tensioning mechanism device according to claim 1, characterized in that: The length of the compression spring (14) can be adjusted by adjusting the distance between the first bolt (4) and the first nut (5), and the distance between the second bolt (6) and the second nut (7) on the adjustment plate (16).

4. A novel belt tensioning mechanism device according to claim 3, characterized in that: The compression spring (14) drives the slide rail (13) and the tension wheel (22) to move left and right under the action of its own tension.

5. A novel belt tensioning mechanism device according to claim 1, characterized in that: The guide shaft (15) rotates, causing the guide shaft (15) and the slide rail (13) to move relative to each other, thereby changing the deformation of the compression spring (14).

6. A novel belt tensioning mechanism device according to claim 5, characterized in that: The guide shaft (15) rotates clockwise, the length of the compression spring (14) becomes shorter, and the slide rail (13) moves away from the belt (2) with the tension wheel (22).

7. A novel belt tensioning mechanism device according to claim 5, characterized in that: The guide shaft (15) rotates counterclockwise, the length of the compression spring (14) becomes longer, and the slide rail (13) brings the tension wheel (22) closer to the belt (2).

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