Synchronous belt tensioner

Abstract

This utility model belongs to the technical field of conveying equipment and discloses a synchronous belt tensioning device, including a mounting base and a tensioning assembly. The mounting base is provided with a mounting groove for mounting the conveying assembly. The conveying assembly includes a first drive wheel, a second drive wheel, and a synchronous belt. The length of the synchronous belt extends along a first direction, and the two ends of the synchronous belt along the first direction are respectively connected to the first drive wheel and the second drive wheel. The first drive wheel is movably disposed in the mounting groove and moves relative to the mounting groove along the first direction. The second drive wheel is rotatably connected to an external fixed base. The tensioning assembly includes a fixed bracket, a first elastic element, and an adjusting element. The fixed bracket is fixed on the mounting base, the first elastic element is disposed on the fixed bracket and connected to the first drive wheel, and the first elastic element always has the tendency to drive the first drive wheel away from the second drive wheel along the first direction. The adjusting element is used to adjust the elastic force of the first elastic element. This device can solve the problem of loose synchronous belts.

Description

Technical Field

[0001] This utility model relates to the field of conveying equipment technology, and in particular to a synchronous belt tensioning device. Background Technology

[0002] In filling equipment, bottle conveying devices are commonly involved, and synchronous belts are a frequently used method. Taking a bottle neck conveyor as an example, a bottle hanging structure is installed on the synchronous belt, allowing bottles to be hung on it and conveyed by the belt. However, during the conveying process using synchronous belts, the belt may not be properly taut, resulting in a loose belt. This directly leads to uneven bottle movement, causing deviations in bottle placement and affecting the accuracy of the conveying operation. Furthermore, it can cause bottles to be placed unevenly on the bottle hanging structure, leading to liquid spillage and even collisions between adjacent bottles. In severe cases, this can cause production line shutdowns or product quality instability, significantly reducing overall production efficiency and safety. Utility Model Content

[0003] The purpose of this invention is to provide a synchronous belt tensioning device with a simple structure that can effectively solve the problem of synchronous belt loosening, ensure smooth material conveying, and improve overall production efficiency and safety.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] A timing belt tensioning device is provided, including a mounting base and a tensioning assembly. The mounting base is provided with a mounting groove for mounting a conveying assembly. The conveying assembly includes a first drive wheel, a second drive wheel, and a timing belt. The length of the timing belt extends along a first direction. The two ends of the timing belt along the first direction are respectively connected to the first drive wheel and the second drive wheel. The first drive wheel is movably disposed in the mounting groove and can move relative to the mounting groove along the first direction. The second drive wheel is rotatably connected to an external fixed base.

[0006] The tensioning assembly includes a fixed bracket, a first elastic element, and an adjusting element. The fixed bracket is fixed on the mounting base. The first elastic element is disposed on the fixed bracket and connected to the first transmission wheel. The first elastic element always has the tendency to drive the first transmission wheel to move away from the second transmission wheel along the first direction. The adjusting element is used to adjust the elastic force of the first elastic element on the first transmission wheel.

[0007] In one embodiment, the adjusting component includes an adjusting bolt and a locking nut, the fixed bracket includes a base frame and a support plate disposed on the base frame, the base frame is fixedly connected to the fixed seat, the support plate is provided with an adjusting screw hole, the adjusting bolt is threadedly connected to the adjusting screw hole, and the adjusting component can be used to adjust the elastic force of the first elastic element.

[0008] In one embodiment, the adjusting member further includes a fixing bolt, the base frame has a first mounting hole on the side adjacent to the mounting base, the mounting base has a second mounting hole corresponding to the first mounting hole, and the fixing bolt passes through the first mounting hole and the second mounting hole respectively to fix the base frame to the mounting base.

[0009] In one embodiment, the support plate is connected to the end of the base frame away from the mounting base, and a reinforcing rib is provided at the connection between the support plate and the base frame.

[0010] In one embodiment, the first elastic element is a spring, the end of the adjusting bolt facing the first transmission wheel is provided with a first guide post, the first transmission wheel is provided with a second guide post that is directly opposite the first guide post along the first direction, and the two ends of the spring along the first direction are respectively sleeved on the outside of the first guide post and the second guide post.

[0011] In one embodiment, the mounting groove includes two first sidewalls disposed opposite each other along a second direction, the distance between the two first sidewalls gradually decreasing along a direction away from the bottom of the mounting groove, and the second direction being set at an angle to the first direction.

[0012] In one embodiment, the conveying assembly further includes a connecting base and a slider connected to each other, the first drive wheel being connected to the connecting base, the slider being slidably connected within the mounting groove, and the slider having a second sidewall that abuts against the first sidewall.

[0013] In one embodiment, the bottom of the mounting groove is provided with a clearance hole corresponding to the connecting base.

[0014] In one embodiment, the timing belt tensioning device further includes a pressure sensor connected to the first elastic element to detect the magnitude of the elastic force of the first elastic element.

[0015] In one embodiment, the mounting groove is provided with a plurality of limiting holes on one side along the second direction, the plurality of limiting holes are spaced apart along the first direction, each limiting hole is provided with a limiting block, the limiting block is connected to a second elastic member, the second elastic member always has the tendency to drive the limiting block to move toward the mounting groove along the second direction, the second direction is set at an angle to the first direction.

[0016] The beneficial effects of this utility model are:

[0017] This invention discloses a synchronous belt tensioning device. By movably connecting a first drive wheel at one end of the synchronous belt to a mounting groove in a mounting base, and connecting a second drive wheel at the other end of the synchronous belt to an external fixed base, the first drive wheel can be driven by a first elastic element to move away from the second drive wheel in a first direction within the mounting groove, thereby tightening the synchronous belt and preventing it from becoming loose. Furthermore, after prolonged use, the first elastic element may age, leading to a decrease in elasticity, or the first elastic element may pull the synchronous belt to a certain distance, resulting in insufficient elasticity and causing the synchronous belt to loosen. In this invention, an adjusting element is provided to adjust the elasticity of the first elastic element, ensuring that the first elastic element applies sufficient force to the first drive wheel, maintaining the tension of the first drive wheel on the synchronous belt, thus ensuring the synchronous belt remains taut. This guarantees the stability and smoothness of material conveying by the synchronous belt, improving production efficiency and safety. Attached Figure Description

[0018] Figure 1 This is a top view of the timing belt tensioning device in this embodiment;

[0019] Figure 2 yes Figure 1 Schematic diagram of section AA;

[0020] Figure 3 yes Figure 2 A partial structural diagram of the BB section;

[0021] Figure 4 yes Figure 2 Enlarged structural diagram of section C;

[0022] Figure 5 This is a schematic diagram of the adjusting component in this embodiment;

[0023] Figure 6 This is a partial structural diagram of the mounting slot in this embodiment;

[0024] Figure 7 This is a schematic diagram of the contact structure between the limiting block and the slider in this embodiment;

[0025] Figure 8This is a schematic diagram of the slider in this embodiment.

[0026] In the picture:

[0027] 100. Mounting base; 110. Mounting groove; 111. First sidewall; 112. Clearance hole; 113. Limiting hole; 114. Limiting block; 115. Second elastic element; 120. Second mounting hole; 200. Tensioning assembly; 210. Fixed bracket; 211. Base frame; 2111. First mounting hole; 212. Support plate; 2121. Adjusting screw hole; 220. First elastic element; 230. Adjusting element; 231. Adjusting bolt; 2311. First guide post; 232. Locking nut; 240. Fixed bolt; 250. Reinforcing rib; 310. First transmission wheel; 320. Second transmission wheel; 330. Synchronous belt; 340. Connecting base; 350. Slider; 351. Second sidewall; 360. Second guide post; 400. Fixed base; 500. Pressure sensor. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0029] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0032] like Figures 1 to 4 As shown, a synchronous belt tensioning device according to this embodiment includes a mounting base 100 and a tensioning assembly 200. The mounting base 100 is provided with a mounting groove 110 for mounting a conveying assembly. The conveying assembly includes a first drive wheel 310, a second drive wheel 320, and a synchronous belt 330. The length of the synchronous belt 330 extends along a first direction, and both ends of the synchronous belt 330 along the first direction are respectively connected to the first drive wheel 310 and the second drive wheel 320 for transmission. The first drive wheel 310 is movably disposed in the mounting groove 110, and the first drive wheel 310 is positioned relative to the mounting groove 110. The first drive wheel 320 moves along the first direction and is rotatably connected to the external fixed seat 400. The tensioning assembly 200 includes a fixed bracket 210, a first elastic element 220 and an adjusting element 230. The fixed bracket 210 is fixed on the mounting seat 100. The first elastic element 220 is disposed on the fixed bracket 210 and connected to the first drive wheel 310. The first elastic element 220 always has the tendency to drive the first drive wheel 310 to move away from the second drive wheel 320 along the first direction. The adjusting element 230 is used to adjust the elastic force of the first elastic element 220 on the first drive wheel 310.

[0033] In this embodiment, by movably connecting the first drive wheel 310 at one end of the synchronous belt 330 to the mounting groove 110 of the mounting base 100, and connecting the second drive wheel 320 at the other end of the synchronous belt 330 to the external fixed base 400, the first drive wheel 310 can be driven by the first elastic element 220 to move away from the second drive wheel 320 in the mounting groove 110 along a first direction, thereby tightening the synchronous belt 330 and preventing it from becoming loose. Furthermore, after prolonged use, the first elastic element 220 may age, causing a decrease in elasticity, or the first elastic element 220 may pull the synchronous belt 330 a certain distance, resulting in insufficient elasticity and causing the synchronous belt 330 to become loose. In this embodiment, by setting the adjusting member 230 to adjust the elastic force of the first elastic member 220, it is ensured that the first elastic member 220 applies sufficient force to the first transmission wheel 310, and ensures the tension of the first transmission wheel 310 on the synchronous belt 330, that is, ensures that the synchronous belt 330 remains taut, thereby ensuring the stability and smoothness of the synchronous belt 330 in material conveying, and improving production efficiency and safety.

[0034] In one embodiment, such as Figure 5 As shown, the adjusting component 230 includes an adjusting bolt 231 and a locking nut 232. The fixed bracket 210 includes a base frame 211 and a support plate 212 mounted on the base frame 211. The base frame 211 is fixedly connected to the fixed seat 400. The support plate 212 is provided with an adjusting screw hole 2121. The adjusting bolt 231 is threadedly connected to the adjusting screw hole 2121. The adjusting component 230 can be used to adjust the elastic force of the first elastic element 220. When adjusting the elastic force, first loosen the locking nut 232, and rotate the adjusting bolt 231 to move it within the adjusting screw hole 2121. When the adjusting bolt 231 moves toward the mounting seat 100, it compresses the first elastic element 220, increasing the elastic force of the first elastic element 220 on the first transmission wheel 310. When the adjusting bolt 231 moves away from the mounting seat 100, the compression degree of the first elastic element 220 decreases, and the elastic force decreases accordingly. After adjusting to the appropriate elastic force, tighten the locking nut 232 to fix the adjusting bolt 231 and prevent it from loosening during use, thereby ensuring the stability of the elastic force of the first elastic element 220 on the first transmission wheel 310.

[0035] In one embodiment, the synchronous belt tensioning device further includes a pressure sensor 500, which is connected to the first elastic element 220 to detect the elastic force of the first elastic element 220. When the detected elastic force is less than a set appropriate range, the operator can adjust the elastic force of the first elastic element 220 in a timely manner through the adjusting component 230 to ensure that the synchronous belt 330 is always in a tensioned state. The cooperation between the limiting block 114 and the second elastic element 115 in the mounting groove 110 can play a certain role in limiting and buffering the movement of the slider 350 in the mounting groove 110. When the slider 350 moves in the mounting groove 110, if it touches the limiting block 114, the second elastic element 115 will generate a buffering force to avoid direct collision and damage between the slider 350 and the mounting groove 110, and at the same time, it can also prevent the slider 350 from moving excessively, ensuring that the first transmission wheel 310 moves within an appropriate range, and further ensuring the stable operation of the synchronous belt tensioning device.

[0036] In one embodiment, the adjusting member 230 further includes a fixing bolt 240. The base frame 211 has a first mounting hole 2111 on the side adjacent to the mounting base 100, and the mounting base 100 has a second mounting hole 120 corresponding to the first mounting hole 2111. The fixing bolt 240 passes through the first mounting hole 2111 and the second mounting hole 120 respectively to fix the base frame 211 to the mounting base 100. This fixing method ensures the stability of the connection between the fixing bracket 210 and the mounting base 100, preventing displacement or shaking of the fixing bracket 210 during the tensioning process of the synchronous belt 330, thereby ensuring the stability of the entire tensioning device. Moreover, the connection method of the fixing bolt 240 is simple and reliable, facilitating installation and disassembly. When maintenance or replacement of parts is required for the tensioning device, the fixing bracket 210 can be easily separated from the mounting base 100.

[0037] Meanwhile, the support plate 212 is connected to the end of the base frame 211 away from the mounting seat 100, and a reinforcing rib 250 is provided at the connection between the support plate 212 and the base frame 211. The reinforcing rib 250 enhances the connection strength between the support plate 212 and the base frame 211, enabling the fixed bracket 210 to better withstand the tension exerted by the first elastic element 220 on the first transmission wheel 310. During the process of the first elastic element 220 driving the first transmission wheel 310 to move, the reinforcing rib 250 can effectively disperse stress, preventing deformation or damage at the connection between the support plate 212 and the base frame 211 due to excessive force, further improving the service life and reliability of the fixed bracket 210.

[0038] In one embodiment, the first elastic element 220 is a spring. The adjusting bolt 231 has a first guide post 2311 at one end facing the mounting base 100. The first transmission wheel 310 has a second guide post 360 directly opposite the first guide post 2311 along a first direction. The two ends of the spring along the first direction are respectively fitted onto the outer sides of the first guide post 2311 and the second guide post 360. This guide post arrangement ensures the spring remains stable during extension and contraction, preventing tilting or deviation, and ensuring that the spring force applied to the first transmission wheel 310 is always along the first direction, thus achieving more precise tensioning of the synchronous belt 330. Simultaneously, the cooperation of the first guide post 2311 and the second guide post 360 makes the installation and disassembly of the spring more convenient, facilitating spring replacement or maintenance.

[0039] During installation, first, place one end of the spring onto the first guide post 2311. Then, assemble the first transmission wheel 310 with the fixed bracket 210, aligning the second guide post 360 with the first guide post 2311. Finally, place the other end of the spring onto the second guide post 360. For disassembly, simply separate the first transmission wheel 310 from the fixed bracket 210 to easily remove the spring.

[0040] In one embodiment, such as Figure 6 As shown, the mounting groove 110 includes two first sidewalls 111 arranged opposite each other along a second direction. The distance between the two first sidewalls 111 gradually decreases in the direction away from the bottom of the mounting groove 110. The second direction is set at an angle to the first direction. This design makes the mounting groove 110 form a trapezoidal structure. When the first drive wheel 310 slides in the mounting groove 110, the first sidewalls 111, which gradually narrow on both sides, can provide good guidance and limit for the first drive wheel 310, ensuring that the first drive wheel 310 moves along a predetermined path and preventing the first drive wheel 310 from deviating or shaking in the mounting groove 110.

[0041] In actual operation, the synchronous belt 330 generates various complex forces, including tension along the first direction and possible lateral forces. This special structure of the mounting groove 110 effectively disperses and resists these forces, making the sliding of the slider 350 within the mounting groove 110 smoother. Furthermore, as the slider 350 gradually moves upward within the mounting groove 110, the constraint effect of the first sidewalls 111 on the slider 350 gradually strengthens, further improving the stability of the slider 350's movement.

[0042] In one embodiment, the conveying assembly further includes a connecting base 340 and a slider 350 connected to each other, with a first drive wheel 310 connected to the connecting base 340 and the slider 350 slidably connected within the mounting groove 110. Figure 8 As shown, the slider 350 has a second sidewall 351 that abuts against the first sidewall 111. This abutting relationship further enhances the stability of the slider 350 sliding within the mounting groove 110. Because the second sidewall 351 is tightly fitted to the first sidewall 111, when the timing belt 330 generates lateral force, the first sidewall 111 can effectively transmit and disperse the force through the second sidewall 351, preventing the slider 350 from tilting or wobbling due to lateral force. Simultaneously, this tight abutment also reduces the gap between the slider 350 and the mounting groove 110, reducing vibration and noise generated by the slider 350 during sliding, and improving the quietness and reliability of the timing belt tensioning device. The second guide post 360 is disposed on the slider 350.

[0043] In one embodiment, such as Figure 6As shown, a clearance hole 112 is provided at the bottom of the mounting groove 110 corresponding to the connecting base 340. The clearance hole 112 is provided to prevent the connecting base 340 from interfering with the bottom of the mounting groove 110 when it moves within the mounting groove 110. When the first drive wheel 310 moves within the mounting groove 110 under the drive of the first elastic element 220, the connecting base 340 will move together with the first drive wheel 310. Without the clearance hole 112, the connecting base 340 may collide with the bottom of the mounting groove 110, affecting the normal movement of the first drive wheel 310 and thus affecting the tensioning effect of the synchronous belt 330.

[0044] In one embodiment, such as Figure 7 As shown, the mounting groove 110 has a plurality of limiting holes 113 on one side along the second direction. The plurality of limiting holes 113 are spaced apart along the first direction, wherein the first direction and the second direction are arranged at an angle. Each limiting hole 113 is provided with a corresponding limiting block 114. A second elastic member 115 is connected to the limiting block 114. The second elastic member 115 always has the tendency to drive the limiting block 114 to move toward the mounting groove 110 along the second direction. Specifically, the bottom of the slider 350 abuts against the bottom of the mounting groove 110. At this time, the limiting block 114 abuts against the bottom of the slider 350. When the slider 350 moves to a specific position in the mounting groove 110 and releases the abutment with the limiting block 114, the limiting block 114 extends into the mounting groove 110 under the action of the second elastic member 115 and abuts against one side of the slider 350 along the first direction. This restricts the slider 350 from moving closer to the second transmission wheel 320 along the first direction, thus preventing the slider 350 from losing its elastic force and rapidly approaching the second transmission wheel 320 when the first elastic member 220 fails due to breakage or other reasons, which could damage the equipment and improve the overall safety of the device.

[0045] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A synchronous belt tensioner characterized by, include: Mounting base (100), the mounting base (100) is provided with mounting groove (110) for mounting the conveying assembly, the conveying assembly includes a first drive wheel (310), a second drive wheel (320) and a timing belt (330), the length of the timing belt (330) extends along a first direction, the two ends of the timing belt (330) along the first direction are respectively connected to the first drive wheel (310) and the second drive wheel (320) for transmission, the first drive wheel (310) is movably disposed in the mounting groove (110) and the first drive wheel (310) moves relative to the mounting groove (110) along the first direction, the second drive wheel (320) is rotatably connected to an external fixed base (400); Tensioning assembly (200), the tensioning assembly (200) includes a fixed bracket (210), a first elastic element (220) and an adjusting element (230), the fixed bracket (210) is fixed on the mounting base (100), the first elastic element (220) is disposed on the fixed bracket (210) and connected to the first transmission wheel (310), the first elastic element (220) always has the tendency to drive the first transmission wheel (310) to move away from the second transmission wheel (320) along the first direction, and the adjusting element (230) is used to adjust the elastic force of the first elastic element (220) on the first transmission wheel (310).

2. The synchronous belt tensioner of claim 1, wherein, The adjusting component (230) includes an adjusting bolt (231) and a locking nut (232). The fixed bracket (210) includes a base frame (211) and a support plate (212) disposed on the base frame (211). The base frame (211) is fixedly connected to the fixed seat (400). The support plate (212) is provided with an adjusting screw hole (2121). The adjusting bolt (231) is threadedly connected to the adjusting screw hole (2121). The adjusting component (230) can be used to adjust the elastic force of the first elastic element (220).

3. The synchronous belt tensioner of claim 2, wherein, The adjusting component (230) also includes a fixing bolt (240). The base frame (211) has a first mounting hole (2111) on the side adjacent to the mounting base (100). The mounting base (100) has a second mounting hole (120) corresponding to the first mounting hole (2111). The fixing bolt (240) passes through the first mounting hole (2111) and the second mounting hole (120) respectively to fix the base frame (211) to the mounting base (100).

4. The synchronous belt tensioner of claim 3, wherein, The support plate (212) is connected to the end of the base frame (211) away from the mounting base (100), and a reinforcing rib (250) is provided at the connection between the support plate (212) and the base frame (211).

5. The synchronous belt tensioner of claim 2, wherein, The first elastic element (220) is a spring. The adjusting bolt (231) is provided with a first guide post (2311) at one end facing the first transmission wheel (310). The first transmission wheel (310) is provided with a second guide post (360) that is directly opposite to the first guide post (2311) along the first direction. The two ends of the spring along the first direction are respectively sleeved on the outside of the first guide post (2311) and the second guide post (360).

6. The synchronous belt tensioner of any one of claims 1 to 5, wherein, The mounting groove (110) includes first sidewalls (111) arranged opposite to each other along two second directions. The distance between the two first sidewalls (111) gradually decreases along the direction away from the bottom of the mounting groove (110). The second directions are arranged at an angle to the first directions.

7. The synchronous belt tensioner of claim 6, wherein, The conveying assembly also includes a connecting base (340) and a slider (350) connected to each other. The first drive wheel (310) is connected to the connecting base (340). The slider (350) is slidably connected in the mounting groove (110). The slider (350) has a second sidewall (351) that abuts against the first sidewall (111).

8. The synchronous belt tensioner of claim 7, wherein, The bottom of the mounting groove (110) is provided with a clearance hole (112) corresponding to the connecting base (340).

9. The synchronous belt tensioner of any one of claims 1 to 5, wherein, It also includes a pressure sensor (500) connected to the first elastic element (220) to detect the elastic force of the first elastic element (220).

10. The synchronous belt tensioner of any one of claims 1 to 5, wherein, The mounting groove (110) has a plurality of limiting holes (113) on one side along the second direction. The plurality of limiting holes (113) are spaced apart along the first direction. Each limiting hole (113) is provided with a corresponding limiting block (114). The limiting block (114) is connected to a second elastic member (115). The second elastic member (115) always has the tendency to drive the limiting block (114) to move toward the mounting groove (110) along the second direction. The second direction is set at an angle to the first direction.

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