Belt tensioning mechanism for industrial transmission

Abstract

The utility model relates to the field of transmission, specifically disclose a kind of industrial transmission device's belt tensioning mechanism, including driving pulley, driven pulley, synchronous belt, pulley mounting plate and tension pulley, the wheel surface of tension pulley is attached with the inner wall of synchronous belt and located between driving pulley and driven pulley, tension pulley is coaxially rotatably installed with wheel shaft, and wheel shaft is installed on pulley mounting plate;It further includes the adjusting locking assembly of control wheel shaft movement, adjusting locking assembly includes: adjusting bolt, adjusting bolt is connected with the radial thread of wheel shaft by passing pulley mounting plate;Locking nut, locking nut is installed on the end of wheel shaft, and locking nut can be located with the abutment of pulley mounting plate.This scheme is moved by adjusting bolt to drive tension pulley, and then tighten locking nut, so that locking nut is abutted to pulley mounting plate, i.

Description

Technical Field

[0001] This utility model relates to the field of transmission technology, and in particular to a belt tensioning mechanism for an industrial transmission device. Background Technology

[0002] The belt tensioning mechanism is a core component that ensures the reliable, efficient, and smooth transmission of power in a belt drive system. By applying appropriate force, the tensioning mechanism keeps the belt pressed tightly against the pulley, generating sufficient static friction to prevent the belt from slipping under load. This ensures that power is transmitted completely and accurately from the driving pulley to the driven pulley. The tensioning mechanism can compensate for this unavoidable elongation, maintain a constant tension, and simultaneously protect the belt, motor bearings, equipment bearings, and other structures, significantly extending the service life of the entire industrial transmission device.

[0003] Currently, common belt tensioning mechanisms include fixed tensioning wheel structures, spring automatic tensioning mechanisms, eccentric wheel or eccentric shaft tensioning structures, hydraulic or pneumatic tensioning mechanisms, and combined tensioning mechanisms. Fixed tensioning wheel structures require manual periodic adjustment; once the belt stretches due to wear or temperature changes, the tension weakens, leading to slippage or reduced efficiency. In spring automatic tensioning mechanisms, the springs fatigue and deform under prolonged stress, causing the tension to decrease over time, and the adjustment range is limited. Eccentric wheel or eccentric shaft tensioning structures require tools for adjustment, and under high loads, the eccentric shaft may slip or fail to lock securely. Hydraulic or pneumatic tensioning mechanisms and combined tensioning mechanisms are complex, costly, and require extensive maintenance, making them unsuitable for small to medium-sized or low-cost equipment. Therefore, all of the above tensioning structures are prone to difficulties in adjustment, significant tension decay over time, and high maintenance costs. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a belt tensioning mechanism for industrial transmission devices, which solves the problems of cumbersome tension adjustment and high maintenance costs in tensioning structures.

[0005] To achieve the above objectives, the basic solution of this utility model is as follows: a belt tensioning mechanism for an industrial transmission device, comprising a driving pulley, a driven pulley, a synchronous belt, a pulley mounting plate, and a tensioning pulley. The surface of the tensioning pulley is in contact with the inner wall of the synchronous belt and is located between the driving pulley and the driven pulley. A wheel axle is coaxially rotatably mounted on the tensioning pulley and is mounted on the pulley mounting plate. Also includes: An adjusting locking assembly for controlling the movement of the wheel axle, the adjusting locking assembly including: Adjusting bolts pass through the pulley mounting plate and are radially threaded to the axle; A locking nut is installed on the end of the axle, and the locking nut can be stopped by abutting against the pulley mounting plate.

[0006] The technical principle of this utility model is as follows: When adjusting the tension of the synchronous belt, first slightly loosen the locking nut, then move the tensioning wheel by turning the adjusting bolt, and then tighten the locking nut so that the locking nut is pressed against the belt pulley mounting plate, which can quickly achieve the purpose of adjusting the tension of the synchronous belt. The whole adjustment process is convenient and labor-saving. Moreover, since the adjusting bolt and the locking nut are both located at the end of the wheel axle, the adjustment operation is safer and more reliable.

[0007] Furthermore, the adjustable locking assembly also includes: A saddle buckle, which covers the end of the adjusting bolt away from the axle; The fixing bolt passes through the end of the buckle and is threaded into the pulley mounting plate.

[0008] With the above setup, the head of the adjusting bolt is confined between the buckle and the pulley mounting plate, thus providing stable support for the end of the axle.

[0009] Furthermore, the number of adjusting locking components is two, and the two sets of adjusting locking components are symmetrically arranged along the center plane of the wheel axle.

[0010] By using the above settings and symmetrical pulling, the tension of the synchronous belt is balanced, avoiding belt misalignment or localized wear caused by unilateral force.

[0011] Furthermore, the pulley mounting plate is provided with a groove for the end of the pulley shaft to slide, and the length direction of the groove is perpendicular to the side of the timing belt.

[0012] With the above settings, the groove of the pulley mounting plate can also provide guidance and adjustment control for the horizontal movement of the wheel axle end, and the pulley mounting plate can stably support the wheel axle.

[0013] Furthermore, it also includes a positioning unit, which includes: The bearing is coaxially mounted between the tension wheel and the axle.

[0014] With the above settings, during the adjustment of the wheel axle position, the tensioning pulley can continuously engage with the synchronous belt, and the bearings and wheel axle can provide stable support and rotational engagement for the tensioning pulley. This reduces the friction between the tensioning pulley and the synchronous belt, reduces related energy loss, indirectly improves the energy conversion efficiency of the equipment, and extends the service life of the synchronous belt.

[0015] Furthermore, there are two bearings, and the two sets of bearings are located at both ends of the tensioning wheel.

[0016] With the above setup, the two sets of bearings can provide stable support at both ends of the tensioning wheel.

[0017] Furthermore, the positioning unit also includes; The first bushing is coaxially fixedly installed on one end of the axle, and the end of the first bushing abuts against the end of one of the bearings; The second bushing is coaxially fixedly installed on the end of the wheel axle away from the first bushing, and the end of the second bushing abuts against the end of another bearing.

[0018] With the above settings, the first bushing and the second bushing can limit the tension wheel and the bearing ends, thus preventing the tension wheel from moving left and right.

[0019] Furthermore, the adjusting bolt is located at the end of the first or second bushing that is furthest from the tensioning wheel.

[0020] With the above settings, the adjusting bolt can be stably engaged with the end of the wheel axle, making the position adjustment of the wheel axle and the tensioning wheel more stable. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the axial direction of the belt tensioning mechanism of an industrial transmission device in an embodiment of this utility model.

[0022] Figure 2 This is a schematic diagram of the belt tensioning mechanism of an industrial transmission device in an embodiment of the present invention, viewed from the left.

[0023] Figure 3 for Figure 1 Exploded view of the tensioning wheel, adjusting locking assembly, and positioning unit.

[0024] In the above figures: driving pulley 10, driven pulley 20, synchronous belt 30, pulley mounting plate 40, slide groove 401, tensioning wheel 50, wheel axle 501, adjusting bolt 502, locking nut 503, stop washer 504, saddle buckle 601, fixing bolt 602, bearing 701, first bushing 702, and second bushing 703. Detailed Implementation

[0025] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0026] This embodiment is basically as follows: Figure 1 , Figure 2 and Figure 3As shown in the figure, this utility model embodiment proposes a belt tensioning mechanism for an industrial transmission device, including a driving pulley 10, a driven pulley 20, a synchronous belt 30, a pulley mounting plate 40, a tensioning wheel 50, a positioning unit, and an adjusting and locking assembly for controlling the movement of the wheel shaft 501. There are two pulley mounting plates 40, and the two sets of pulley mounting plates 40 are symmetrically arranged at both ends of the driving pulley 10, the driven pulley 20, and the tensioning wheel 50. The driving pulley 10 and the driven pulley 20 are both mounted between the two sets of pulley mounting plates 40 through a rotating shaft. The synchronous belt 30 is wound around the driving pulley 10, the driven pulley 20, and the tensioning wheel 50.

[0027] At the same time, such as Figure 1 As shown, the surface of the tensioning pulley 50 is in contact with the inner wall of the timing belt 30 and is located between the driving pulley 10 and the driven pulley 20. A wheel axle 501 is coaxially mounted on the tensioning pulley 50. The wheel axle 501 is mounted on the pulley mounting plate 40. The pulley mounting plate 40 is provided with a groove 401 for the end of the wheel axle 501 to slide. The length direction of the groove 401 is perpendicular to the side of the timing belt 30.

[0028] At the same time, such as Figure 1 , Figure 2 and Figure 3 As shown, there are two adjusting locking components, and the two sets of adjusting locking components are symmetrically arranged along the center plane of the wheel axle 501. The adjusting locking components include adjusting bolts 502, locking nuts 503, buckles 601, fixing bolts 602, and stop washers 504. The adjusting bolts 502 are external hexagonal bolts, and the locking nuts 503 are inert locking nuts. The end of the adjusting bolt 502 passes through the pulley mounting plate 40 and is located in the groove 401. The end of the adjusting bolt 502 is radially threaded to the wheel axle 501. The stop washers 504 are installed between the adjusting bolt 502 and the side wall of the pulley mounting plate 40. Figure 1 As shown, the adjusting bolt 502 is located on the left side of the pulley mounting plate 40; the locking nut 503 is installed on the end of the axle 501, and the locking nut 503 can abut against the pulley mounting plate 40 for limiting; the buckle 601 can cover the end of the adjusting bolt 502 away from the axle 501, and there is a gap between the buckle 601 and the pulley mounting plate 40 to ensure that the buckle 601 can press the end of the adjusting bolt 502 after adjustment; the fixing bolt 602 is a cup-head hexagon socket head cap screw, which passes through the end of the buckle 601 and is threadedly fixed to the pulley mounting plate 40.

[0029] like Figure 3As shown, the positioning unit includes a bearing 701, a first bushing 702, and a second bushing 703. There are two bearings 701, which are coaxially mounted between the tension wheel 50 and the axle 501. The two sets of bearings 701 are located at both ends of the tension wheel 50. The first bushing 702 is coaxially fixedly mounted on the left end of the axle 501, and the end of the first bushing 702 abuts against the end of the left bearing 701. The second bushing 703 is coaxially fixedly mounted on the right end of the axle 501, and the end of the second bushing 703 abuts against the end of the right bearing 701. The adjusting bolt 502 is located at the end of the first bushing 702 or the second bushing 703 that is furthest from the tension wheel 50. The first bushing 702 and the second bushing 703 can limit the tension wheel 50 and the bearings 701 at both ends, thereby preventing the tension wheel 50 from moving left and right.

[0030] In this embodiment, when using the belt tensioning mechanism of the industrial transmission device, the locking nut 503 is first slightly loosened, and then the tensioning wheel 50 is moved back and forth by turning the two adjusting bolts 502 on the left and right. Then the locking nut 503 is tightened so that the locking nut 503 is pressed against the pulley mounting plate 40, which can quickly achieve the purpose of adjusting the tension of the synchronous belt 30. When the adjusting bolt 502 is turned, the distance between the head of the adjusting bolt 502 and the wheel axle 501 will change. At this time, the head of the adjusting bolt 502 is limited between the buckle 601 and the pulley mounting plate 40, so that the end of the wheel axle 501 is stably supported. At the same time, during the adjustment process, the groove 401 of the pulley mounting plate 40 can also provide guidance and adjustment control for the horizontal movement of the end of the wheel axle 501, and the pulley mounting plate 40 can stably support the wheel axle 501.

[0031] Meanwhile, during the adjustment of the position of the axle 501, the tension pulley 50 remains engaged with the synchronous belt 30, and the bearing 701 and axle 501 provide stable support and rotational engagement for the tension pulley 50. When the drive pulley 10 rotates, it drives the driven pulley 20 and the tension pulley 50 to rotate together through the synchronous belt 30, thereby reducing the friction between the tension pulley 50 and the synchronous belt 30, reducing related energy loss, indirectly improving the energy conversion efficiency of the equipment, and extending the service life of the synchronous belt 30.

[0032] In the above process, the tensioning pulley 50 is located inside the synchronous belt 30 and directly contacts the inner surface of the synchronous belt 30, which can ensure that the tensioning pulley 50 stably tensions the synchronous belt 30. When adjusting the tensioning pulley 50, the two ends of the tensioning pulley 50 are connected by independent bolts, which can be adjusted synchronously along the same axis or in a parallel direction. The adjustment direction is stable, and the tension balance of the synchronous belt 30 is achieved by symmetrical pulling, avoiding belt deviation or local wear caused by unilateral force. At the same time, the tensioning pulley 50 rotates synchronously with the belt during belt operation, reducing sliding friction and heat generation. The tensioning pulley 50, the adjusting locking assembly, and the positioning unit are arranged between the driving pulley 10, the driven pulley 20, and the synchronous belt 30, making it suitable for equipment with limited space and reducing external support components or complex slide rails.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A belt tensioning mechanism for an industrial transmission device, comprising a driving pulley, a driven pulley, a synchronous belt, a pulley mounting plate, and a tensioning pulley, characterized in that, The surface of the tensioning pulley is in contact with the inner wall of the timing belt and is located between the driving pulley and the driven pulley. A wheel axle is coaxially mounted on the tensioning pulley and is mounted on the pulley mounting plate. Also includes: An adjusting locking assembly for controlling the movement of the wheel axle, the adjusting locking assembly comprising: An adjusting bolt, which passes through the pulley mounting plate and is radially threaded to the axle; A locking nut is installed on the end of the axle, and the locking nut can be stopped by abutting against the pulley mounting plate.

2. The belt tensioning mechanism of an industrial transmission device as described in claim 1, characterized in that, The adjusting locking assembly further includes: A saddle buckle, wherein the saddle buckle can cover the end of the adjusting bolt away from the axle; A fixing bolt passes through the end of the buckle and is threadedly connected to the pulley mounting plate.

3. The belt tensioning mechanism of an industrial transmission device as described in claim 1, characterized in that, The number of the adjustment locking components is two, and the two sets of adjustment locking components are symmetrically arranged along the center plane of the wheel axle.

4. The belt tensioning mechanism of an industrial transmission device as described in claim 1, characterized in that, The pulley mounting plate is provided with a sliding groove for the end of the pulley shaft to slide, and the length direction of the sliding groove is perpendicular to the side of the timing belt.

5. The belt tensioning mechanism of an industrial transmission device as described in claim 1, characterized in that, It also includes a positioning unit, which comprises: The bearing is coaxially mounted between the tension wheel and the axle.

6. The belt tensioning mechanism of an industrial transmission device as described in claim 5, characterized in that, The number of bearings is two, and the two sets of bearings are located at both ends of the tensioning wheel.

7. The belt tensioning mechanism of an industrial transmission device as described in claim 6, characterized in that, The positioning unit also includes; The first bushing is coaxially fixedly installed on one end of the axle, and the end of the first bushing abuts against the end of one of the bearings; The second bushing is coaxially fixedly installed on the end of the wheel axle away from the first bushing, and the end of the second bushing abuts against the end of another bearing.

8. The belt tensioning mechanism of an industrial transmission device as described in claim 7, characterized in that, The adjusting bolt is located at the end of the first or second bushing that is furthest from the tensioning wheel.

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