Belt tensioner

Abstract

The utility model belongs to the technical field of belt debugging, disclose a kind of belt tensioning device. The belt tensioning device specifically includes support, sliding mechanism and tensioning mechanism;Sliding mechanism includes slide base and sliding block, slide base is set to support, sliding block is set to the side of slide base close to belt, and sliding block can slide along the first direction;Tensioning mechanism includes central shaft and tensioning wheel, central shaft is vertically set to the side of sliding block away from slide base, and tensioning wheel is pivoted to the outer periphery of central shaft, belt has tight section and loose section when conveying, and tensioning wheel is located at the outside of loose section, when sliding block slides along the first direction, tensioning wheel can abut and tension loose section. The belt adjusting device in the utility model not only simple structure, and without disassembling any other components, the whole tensioning adjustment process is simple and fast, and downtime is short, without cross operation, also reduces artificial cost, improves maintenance efficiency.

Description

Technical Field

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

[0002] In the tobacco industry, the ZJ118 cigarette rolling machine is commonly used to improve tobacco production efficiency. This model of cigarette rolling machine relies on a drive belt for operation. Therefore, to ensure good cigarette rolling results, the drive belt is usually maintained and replaced periodically. However, replacing the belt requires readjusting the tension. The conventional method involves first removing the waste tobacco line and the outer protective cover, then sending an electrician to dismantle the corresponding wiring to ensure safety during replacement and adjustment. This method is not only cumbersome but also time-consuming, severely wasting human resources, causing significant downtime, and reducing cigarette production efficiency. Utility Model Content

[0003] The purpose of this utility model is to provide a belt tensioning device that is not only simple in structure, but also has a simple and quick belt tensioning process, short downtime, no need for cross-job operation, and also reduces labor costs, improves maintenance efficiency, and ensures good operating efficiency.

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

[0005] A belt tensioning device, comprising:

[0006] Support;

[0007] A sliding mechanism includes a slide block and a slider. The slide block is disposed on the support, and the slider is disposed on the side of the slide block near the belt. The slider is capable of sliding in a first direction.

[0008] The tensioning mechanism includes a central shaft and a tensioning wheel. The central shaft is vertically disposed on the side of the slider away from the slide block. The tensioning wheel is pivotally connected to the outer periphery of the central shaft. The belt drive has a tight section and a loose section. The tensioning wheel is located outside the loose section. When the slider slides along the first direction, the tensioning wheel can abut against and tension the loose section.

[0009] Preferably, the slider has a sliding part on the side near the slide block, the slide block has a groove along the first direction, the sliding part is embedded in the groove and can slide along the extension direction of the groove.

[0010] Preferably, the slide block is provided with a first limiting plate and a second limiting plate at both ends along the first direction, and the first limiting plate and the second limiting plate can limit the movement distance of the slider along the extension direction of the slide groove.

[0011] Preferably, the sliding mechanism further includes a drive rod assembly extending along the first direction, with both ends of the drive rod assembly passing through the first limiting plate and the second limiting plate respectively, and the drive rod assembly passing through the slider, the slider being able to move along the axial direction of the drive rod assembly.

[0012] Preferably, the drive rod assembly includes a first screw and a second screw. The first screw is threadedly engaged with the first limiting plate and is at least partially inserted into the slider and threadedly engaged with the slider. The second screw is threadedly engaged with the second limiting plate and is at least partially inserted into the slider and threadedly engaged with the slider.

[0013] Preferably, the first screw and the second screw are coaxial and directly opposite each other.

[0014] Preferably, the sliding mechanism further includes a plurality of fixing members, each of the fixing members including a first body and a second body that are perpendicularly connected to each other, the first body being detachably connected to the slide block, and the second body being detachably connected to the top of the support.

[0015] Preferably, the slide block has multiple positioning grooves on the side opposite to the slider, and the first body can be installed in the positioning grooves accordingly, and the height of the first body is the same as the height of the slide block.

[0016] Preferably, the tensioning mechanism further includes a bearing, which is interference-fitted onto the outer periphery of the central shaft, and the tensioning wheel is sleeved on the outer periphery of the bearing.

[0017] Preferably, the outer periphery of the tensioning wheel is covered with an anti-slip layer, and both ends of the tensioning wheel along the axial direction are provided with limiting parts.

[0018] The beneficial effects of this utility model are:

[0019] This utility model discloses a belt tensioning device. Specifically, the device includes a support, a sliding mechanism, and a tensioning mechanism. The sliding mechanism includes a slide block and a slider. The slide block is disposed on the support, and the slider is disposed on the side of the slide block near the belt, and the slider can slide along a first direction. The tensioning mechanism includes a central shaft and a tensioning wheel. The central shaft is vertically disposed on the side of the slider away from the slide block, and the tensioning wheel is pivotally connected to the outer periphery of the central shaft. During belt transmission, there are a tight section and a loose section. The tensioning wheel is located outside the loose section. When the slider slides along the first direction, the tensioning wheel can abut against and tension the loose section.

[0020] When belt adjustment is needed, simply push the slider in the first direction. The slider will drive the tensioning mechanism to slide in the first direction. At this time, the tensioning wheel can gradually press against the slack section of the belt, thereby tensioning the slack section and preventing it from breaking due to excessive tension. This ensures the service life of the belt and operational safety. In addition, the support and slide can significantly improve the stability of the tensioning process, and the tensioning wheel can rotate around the central axis. Therefore, during belt tensioning, the rotation of the tensioning wheel around the central axis effectively reduces the friction between the belt and the tensioning wheel, ensuring good belt transmission performance. Therefore, this device is not only simple in structure, but also provides smooth, convenient, and quick belt tensioning with minimal downtime. It also eliminates the need for cross-disciplinary operation (where both mechanics and electricians are present), improving maintenance efficiency and cigarette production efficiency. Attached Figure Description

[0021] Figure 1 This is a first isometric view of the belt tensioning device described in an embodiment of the present invention;

[0022] Figure 2 This is a second isometric view of the belt tensioning device described in an embodiment of the present invention;

[0023] Figure 3 This is a side view of the belt tensioning device described in an embodiment of the present invention;

[0024] Figure 4 This is a cross-sectional view of the belt tensioning device described in an embodiment of this utility model.

[0025] In the picture:

[0026] 10. Support;

[0027] 20. Sliding mechanism; 21. Slide block; 211. Slide groove; 22. Slider; 221. Sliding part; 23. First limiting plate; 24. Second limiting plate; 25. First screw; 26. Second screw; 27. Fixing component; 271. First body; 272. Second body; 273. Locking hole;

[0028] 30. Tensioning mechanism; 31. Central shaft; 32. Tensioning wheel; 32. Limiting part; 33. Bearing;

[0029] 100. Belt; 110. Tight section; 120. Loose section;

[0030] 200. Transmission wheel set. Detailed Implementation

[0031] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0032] 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 or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or 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 according to the specific circumstances.

[0033] In the description of this utility model, unless otherwise expressly 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.

[0034] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0035] like Figures 1 to 4 As shown, this utility model provides a belt tensioning device. Specifically, the device includes a support 10, a sliding mechanism 20, and a tensioning mechanism 30. The sliding mechanism 20 includes a slide block 21 and a slider 22. The slide block 21 is disposed on the support 10, and the slider 22 is disposed on the side of the slide block 21 near the belt 100, and the slider 22 can slide along a first direction. The tensioning mechanism 30 includes a central shaft 31 and a tensioning wheel 32. The central shaft 31 is vertically disposed on the side of the slider 22 opposite to the slide block 21. The tensioning wheel 32 is pivotally connected to the outer periphery of the central shaft 31. When the belt 100 is conveyed, it has a tight section 110 and a loose section 120. The tensioning wheel 32 is located outside the loose section 120. When the slider 22 slides along the first direction, the tensioning wheel 32 can abut against and tension the loose section 120.

[0036] When belt 100 needs adjustment, simply push slider 22 in the first direction. Slider 22 drives tensioning mechanism 30 to slide in the first direction. At this time, tensioning wheel 32 can gradually press against the slack section 120 of belt 100, thereby tensioning the slack section 120 and preventing the tension section 110 from breaking due to excessive tension. This ensures the service life of belt 100 and operational safety. In addition, support 10 and slide 21 can significantly improve the stability of the tensioning process, and tensioning wheel 32 can rotate around central axis 31. Therefore, during the tensioning of belt 100, tensioning wheel 32 rotates around central axis 31, effectively reducing the friction between belt 100 and tensioning wheel 32, ensuring good transmission effect of belt 100. Therefore, this device is not only simple in structure, but also allows for smooth, convenient, and quick belt tensioning, with minimal downtime and no need for cross-disciplinary operation (mechanics and electricians must be present simultaneously), improving maintenance efficiency and cigarette production efficiency.

[0037] It should be noted that, as Figures 1-4 As shown, belt 100 is connected to transmission pulley set 200. When transmission pulley set 200 operates, one side of belt 100 is tightened first, forming a tight section 110 (directly driven by the driving force, resulting in greater tension). The other side of belt 100 also rotates under the transmission, forming a loose section 120 (no direct driving force, resulting in less tension). Correspondingly, in this embodiment, when slider 22 is pushed along the first direction, tensioning wheel 32 can gradually press against the loose section 120 of belt 100, thereby avoiding the tight section 110 from being subjected to greater tension, thus preventing the tight section 110 from being overloaded and breaking. This simplifies operation while ensuring the service life of belt 100 and operational safety.

[0038] Specifically, such as Figure 1 and Figure 4 As shown, a sliding part 221 is provided on the side of the slider 22 near the slide base 21. The slide base 21 has a groove 211 along the first direction. The sliding part 221 is embedded in the groove 211 and can slide along the extension direction of the groove 211. This structure not only ensures a good sliding connection, but also ensures the smoothness of the slider 22 sliding on the slide base 21, thereby greatly improving the convenience of adjustment and ensuring a good user experience.

[0039] It should be noted that, as Figure 4As shown, the sliding part 221 is a trapezoidal structure whose width gradually increases in the direction away from the main body of the slider 22. Correspondingly, the groove 211 is also a trapezoidal groove. When the sliding part 221 slides into the groove 211 from the end of the slide block 21, the slider 22 will not detach from the groove 211 even when it is subjected to a pulling force away from the slide block 21. This avoids the slider 22 from falling off during the sliding process and ensures a good sliding adjustment effect.

[0040] To prevent the sliding part 221 from detaching from both ends of the groove 211, such as Figures 1-3 As shown, a first limiting plate 23 and a second limiting plate 24 are respectively provided at both ends of the slide block 21 along the first direction. The first limiting plate 23 and the second limiting plate 24 can limit the movement distance of the slider 22 along the extension direction of the slide groove 211. That is, by blocking the groove openings at both ends of the slide groove 211 by the first limiting plate 23 and the second limiting plate 24, the sliding distance is prevented from being too large and causing the sliding part 221 to slide out of the slide groove 211, thereby ensuring good performance.

[0041] In addition, such as Figures 1-3 The sliding mechanism 20 further includes a drive rod assembly extending along a first direction. Both ends of the drive rod assembly pass through the first limiting plate 23 and the second limiting plate 24, respectively, and the drive rod assembly passes through the slider 22, allowing the slider 22 to move axially along the drive rod assembly. This structure enables the drive rod assembly to further guide the movement of the slider 22, thereby ensuring a good sliding effect.

[0042] Specifically, such as Figures 1-4 As shown, the drive rod assembly includes a first screw 25 and a second screw 26. The first screw 25 is threadedly engaged with the first limiting plate 23 and is at least partially inserted into the slider 22, where it is threadedly engaged. The second screw 26 is threadedly engaged with the second limiting plate 24 and is at least partially inserted into the slider 22, where it is threadedly engaged. When the first screw 25 or the second screw 26 is rotated, it can rotate relative to the slider 22. Under the action of the threads, the slider 22 can slide in the first direction. The structure is simple, the operation is convenient, and the installation of the first screw 25 and the second screw 26 is easy. In addition, when the slider 22 moves to the preset position, the tension wheel 32 provides tension to the belt 100. At the same time, the belt 100 will generate a reverse force on the tension wheel 32. However, due to the presence of the threads, the reverse force will not cause the slider 22 to move in the opposite direction, thereby ensuring that the tension wheel 32 can be maintained in the corresponding position, thus ensuring a continuous tensioning effect.

[0043] In addition, such as Figures 1-3As shown, the first screw 25 and the second screw 26 are coaxial and directly opposite each other. This structure ensures uniform force distribution on both sides of the slider 22, while the symmetrical arrangement of the first screw 25 and the second screw 26 further reduces the difficulty of operation and installation, and also maintains the aesthetic appeal of the structure. Furthermore, since the first screw 25 and the second screw 26 are two independent parts, the operator can adjust the position of the slider 22 by turning either screw, further improving operational convenience.

[0044] In other embodiments, the first screw 25 and the second screw 26 can be replaced with a single guide rod. The guide rod passes through the slider 22, allowing the slider 22 to slide directly on the guide rod. Multiple limiting members are spaced apart on the slide block 21 along the first direction, ensuring that when the slider 22 slides to any position along the first direction, a corresponding limiting member will fix the slider 22 in a preset position. Any structure that enables the slider 22 to slide to a certain position along the first direction and is fixed at that position is within the protection scope of this embodiment.

[0045] Furthermore, in this embodiment, the slide 21 is detachably connected to the top of the support 10. This detachable connection facilitates subsequent parts replacement and maintenance.

[0046] Specifically, such as Figure 1 and Figure 2 As shown, the sliding mechanism 20 also includes multiple fixing members 27. Each fixing member 27 includes a first body 271 and a second body 272 that are perpendicularly connected to each other. The first body 271 is detachably connected to the slide 21, and the second body 272 is detachably connected to the top of the support 10. The multiple fixing members 27 can ensure the stability of the slide 21 on the support 10 and prevent the slide 21 from shaking during adjustment. The perpendicular connection of the first body 271 and the second body 272 ensures that the fixing members 27 are precisely positioned at the connection corner between the slide 21 and the support 10, thereby significantly improving the stability and convenience of installation.

[0047] It should be noted that both the first body 271 and the second body 272 are provided with multiple locking holes 273. By means of bolts or screws, the first body 271 and the second body 272 can be locked onto the slide 21 and the support 10 respectively. This not only ensures the detachable connection method, but also improves the convenience of disassembly and assembly.

[0048] In addition, such as Figure 3As shown, the slide 21 has multiple positioning slots on the side opposite to the slider 22. The first body 271 can be installed in the corresponding positioning slots, and the height of the first body 271 is the same as the height of the slide 21. When it is necessary to install the fixing parts 27, the corresponding number of fixing parts 27 can be selected and fixedly installed according to the number and position of the positioning slots, thereby further improving the convenience of installation. At the same time, since the height of the first body 271 is the same as the height of the slide 21, the top of the slide 21 is not raised, thus taking into account the aesthetics of the overall device.

[0049] It should be noted that in this embodiment, two fixing members 27 are provided, and the two fixing members 27 are located at both ends of the slide 21 along the first direction. In other embodiments, the number and position of the fixing members 27 can be adjusted according to actual needs. In addition, the first body 271 and the second body 272 are integrally formed, which can significantly improve the convenience of processing and reduce processing costs.

[0050] In addition, such as Figure 1 As shown, the tensioning mechanism 30 also includes a bearing 33, which is interference-fitted onto the outer periphery of the central shaft 31, and the tensioning pulley 32 is sleeved on the outer periphery of the bearing 33. By setting the bearing 33, the ease of installing the tensioning pulley 32 can be further improved, and the smoothness of the rotation of the tensioning pulley 32 can be improved, thus significantly reducing the friction between the belt 100 and the tensioning pulley 32, thereby ensuring good performance.

[0051] It should be noted that, as Figure 4 As shown, the bearing 33 is a deep groove ball bearing, and two bearings are spaced apart along the axial direction of the central shaft 31. Both bearings 33 are fixed in their respective positions by shaft clips. Finally, the tensioning wheel 32 is sleeved on the outer circumference of the two bearings 33 to further ensure the flexibility of the tensioning wheel 32 rotation.

[0052] In addition, such as Figure 1 As shown, the outer periphery of the tensioning pulley 32 is covered with an anti-slip layer, and both ends of the tensioning pulley 32 along the axial direction are provided with limiting parts 321. The anti-slip layer can prevent slippage and misalignment between the tensioning pulley 32 and the belt 100 during the adjustment process, ensuring that there is a certain friction between the two and ensuring a good adjustment effect; while the belt 100 can be limited by the limiting parts 321 at both ends, thereby further improving the limiting effect of the belt 100, effectively preventing the belt 100 from disengaging from the tensioning pulley 32, and improving the adjustment efficiency.

[0053] The workflow of this embodiment is described below with reference to the accompanying drawings:

[0054] Rotating the first screw 25 clockwise (or the second screw 26 counterclockwise) pushes the slider 22 towards the belt 100 under the action of the screw thread, and causes the tensioning wheel 32 to press against the slack section 120, increasing the tension. When the belt 100 is over-tensioned, rotating the first screw 25 counterclockwise (or the second screw 26 clockwise) drives the slider 22 away from the belt 100 under the action of the screw thread, thereby reducing the tension of the slack section 120. During the adjustment process, the tension of the belt 100 can be measured by the operator's feel, experience, or by using a tension meter, until the standard value is reached.

[0055] In summary, the adjustment device in this embodiment is not only simple in structure, but also does not require disassembly of any other parts. The entire tension adjustment process is simple and quick, with short downtime, no need for cross-departmental operations, and also reduces labor costs and improves maintenance efficiency.

[0056] 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 other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations 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 belt tensioning device, characterized in that, include: Support (10); The sliding mechanism (20) includes a slide block (21) and a slider (22). The slide block (21) is disposed on the support (10), and the slider (22) is disposed on the side of the slide block (21) close to the belt (100). The slider (22) is capable of sliding in a first direction. The tensioning mechanism (30) includes a central shaft (31) and a tensioning wheel (32). The central shaft (31) is vertically disposed on the side of the slider (22) away from the slide block (21). The tensioning wheel (32) is pivotally connected to the outer periphery of the central shaft (31). The belt (100) has a tight section (110) and a loose section (120) when driven. The tensioning wheel (32) is located outside the loose section (120). When the slider (22) slides along the first direction, the tensioning wheel (32) can abut against and tension the loose section (120).

2. The belt tensioning device according to claim 1, characterized in that, The slider (22) has a sliding part (221) on the side near the slide block (21). The slide block (21) has a groove (211) along the first direction. The sliding part (221) is embedded in the groove (211) and can slide along the extension direction of the groove (211).

3. The belt tensioning device according to claim 2, characterized in that, The slide block (21) is provided with a first limiting plate (23) and a second limiting plate (24) at both ends along the first direction. The first limiting plate (23) and the second limiting plate (24) can limit the movement distance of the slider (22) along the extension direction of the slide groove (211).

4. The belt tensioning device according to claim 3, characterized in that, The sliding mechanism (20) further includes a drive rod group extending along the first direction. The two ends of the drive rod group are respectively inserted through the first limiting plate (23) and the second limiting plate (24), and the drive rod group passes through the slider (22). The slider (22) can move along the axial direction of the drive rod group.

5. The belt tensioning device according to claim 4, characterized in that, The drive rod assembly includes a first screw (25) and a second screw (26). The first screw (25) is threadedly engaged with the first limiting plate (23) and is at least partially inserted into the slider (22) and threadedly engaged with the slider (22). The second screw (26) is threadedly engaged with the second limiting plate (24) and is at least partially inserted into the slider (22) and threadedly engaged with the slider (22).

6. The belt tensioning device according to claim 5, characterized in that, The first screw (25) and the second screw (26) are coaxial and directly opposite each other.

7. The belt tensioning device according to any one of claims 1-6, characterized in that, The sliding mechanism (20) also includes a plurality of fasteners (27), each of the fasteners (27) including a first body (271) and a second body (272) that are perpendicularly connected to each other. The first body (271) is detachably connected to the slide (21), and the second body (272) is detachably connected to the top of the support (10).

8. The belt tensioning device according to claim 7, characterized in that, The slide block (21) has multiple positioning slots on the side away from the slider (22), and the first body (271) can be installed in the positioning slots accordingly, and the height of the first body (271) is the same as the height of the slide block (21).

9. The belt tensioning device according to any one of claims 1-6, characterized in that, The tensioning mechanism (30) also includes a bearing (33), which is interference-fitted to the outer periphery of the central shaft (31), and the tensioning wheel (32) is sleeved on the outer periphery of the bearing (33).

10. The belt tensioning device according to any one of claims 1-6, characterized in that, The tensioning wheel (32) is covered with an anti-slip layer on its outer periphery, and the tensioning wheel (32) is provided with a limit part (321) at both ends along the axial direction.

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