A tension adjustment device for narrow V-belts with rubber bands

Abstract

This utility model relates to the technical field of tension adjustment devices, and more particularly to a tension adjustment device for a rubber-coated narrow V-belt. It includes a driving wheel and a driven wheel rotatably connected to the inner side of a fixed panel. A narrow V-belt body is disposed between the driving wheel and the driven wheel. A tension wheel is disposed on the outer slack side of the driving wheel. This utility model, by setting a toothed ring on the outer peripheral wall of the narrow V-belt body and a meshing toothed belt on the outer peripheral wall of the tension wheel, essentially transforms the unstable transmission relying on friction into a meshing transmission method by replacing the traditional smooth surface friction contact. Compared with the sliding friction loss of traditional friction-based methods, the overall efficiency is higher. Furthermore, because there is no slippage, the power transmission is more direct, avoiding the additional energy consumption caused by slippage in friction-based methods. This improvement not only fundamentally reduces the wear, aging, and fatigue damage of the narrow V-belt and the tension wheel, extending their service life, but also improves transmission efficiency and stability.

Description

Technical Field

[0001] This utility model relates to the technical field of tension adjustment devices, and in particular to a tension adjustment device for a rubber-coated narrow V-belt. Background Technology

[0002] The rubber band narrow V-belt tension adjustment device is a mechanical device used in rubber band narrow V-belt drive systems. It is specifically responsible for adjusting the tension of the narrow V-belt and maintaining transmission stability. It is widely used in industrial machinery, agricultural equipment, automotive transmissions and other fields.

[0003] Current methods typically use the movement of a tensioner pulley for adjustment. By adjusting the position of the tensioner pulley, the loosening of the narrow V-belt caused by stretching and wear during long-term use is compensated, ensuring that the narrow V-belt and the drive pulley maintain appropriate contact force, thereby ensuring effective power transmission. However, since the traditional tensioner pulley and narrow V-belt usually use friction, the sliding friction transmission method will aggravate the wear of the narrow V-belt and the tensioner pulley. Under continuous friction, the side of the narrow V-belt is prone to local overheating, rubber aging, and even cracks or delamination. The tension is prone to fluctuation, which in turn causes slippage between the narrow V-belt and the tensioner pulley, resulting in unstable speed. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a rubber-coated narrow V-belt tension adjustment device. This device solves the problems inherent in existing technologies where friction is typically used between the tensioning pulley and the narrow V-belt. This friction-based transmission method exacerbates wear on both the narrow V-belt and the tensioning pulley, leading to localized overheating, rubber aging, and even cracks or delamination on the sides of the narrow V-belt under continuous friction. This also causes fluctuations in tension, resulting in slippage between the narrow V-belt and the tensioning pulley and unstable rotational speed. The device replaces traditional smooth-surface friction contact with meshing transmission, achieving higher overall efficiency compared to the sliding friction losses of traditional friction-based methods. Furthermore, the absence of slippage allows for more direct power transmission, avoiding the additional energy consumption caused by slippage in friction-based methods.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a rubber-coiled narrow V-belt tension adjustment device, comprising a driving wheel and a driven wheel rotatably connected to the inner side of a fixed panel, a narrow V-belt body disposed between the driving wheel and the driven wheel, a tension wheel disposed at the outer slack side of the driving wheel, and an adjustment swing arm rotatably disposed on the inner side of the fixed panel to drive the tension wheel to swing and adjust the tension of the narrow V-belt body;

[0006] A drive toothed belt is fixedly installed on the outer peripheral wall of the narrow V-belt body, and a toothed ring is fixedly installed on the outer peripheral wall of the tensioning wheel. The drive toothed belt meshes with the toothed ring to reduce the friction between the narrow V-belt body and the tensioning wheel.

[0007] Preferably, the outer wall of the tensioning wheel is fixedly mounted with a drive shaft that is rotatably sleeved with the movable end of the adjusting swing arm.

[0008] Preferably, the two limiting edges of the tensioning wheel are attached to both sides of the narrow V-belt body.

[0009] Preferably, a fixed frame is fixedly installed on the back of the fixed panel, and a drive gear is rotatably connected to the inner center of the fixed frame. The shaft of the drive gear passes through the fixed panel and is fixedly connected to the end of the adjusting swing arm.

[0010] Preferably, one side of the drive gear is meshed with a transmission rack that drives itself to rotate, and both ends of the transmission rack are fixedly installed with limiting plates that are slidably connected to the fixed frame. An adjusting screw is threadedly connected to the inner bottom of the fixed frame, and the end of the adjusting screw is rotatably connected to the limiting plate. A drive knob is fixedly installed at one end of the adjusting screw that extends to the outside of the fixed frame.

[0011] Preferably, the outer wall of the fixed frame is provided with scale lines, and the outer wall of the fixed frame is slidably connected with an indicator plate that works in conjunction with the scale lines.

[0012] Preferably, the side wall of the fixed frame is provided with a strip groove, and the end of the bottom limiting plate passes through the strip groove and is fixedly connected to the indicator plate. Sealing plates for sealing the strip groove are fixedly installed on both sides of the indicator plate.

[0013] By means of the above technical solution, this utility model provides a tension adjustment device for rubber-coated narrow V-belts, which has at least the following beneficial effects:

[0014] 1. This utility model sets a toothed ring on the outer peripheral wall of the narrow V-belt body and a meshing toothed belt on the outer peripheral wall of the tensioner. By replacing the traditional smooth surface friction contact, it essentially transforms the unstable transmission that relies on friction into a meshing transmission method. Compared with the sliding friction loss of the traditional friction method, the overall efficiency is higher. At the same time, because there is no slippage, the power transmission is more direct, avoiding the extra energy consumption caused by slippage in the friction method. This improvement not only reduces the wear, aging and fatigue damage of the narrow V-belt and the tensioner from the root, extending their service life, but also improves transmission efficiency and stability.

[0015] 2. This utility model, through the cooperation of an adjusting screw, drives the transmission rack to move, ultimately achieving the tensioning of the narrow V-belt body by adjusting the tensioning wheel. Utilizing this adjustment method, with the cooperation of the indicator plate and scale lines, it is convenient to adjust according to preset standards based on parameters such as belt type and transmission power, avoiding deviations caused by experience-based estimations and ensuring that the tension is within the optimal range. It also ensures consistent tension across multiple operations or multiple units of the same model, reducing transmission performance instability caused by differences in human operation. Attached Figure Description

[0016] The accompanying drawings, which are provided to further illustrate this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application.

[0017] In the attached diagram:

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram showing the installation position of the tensioning wheel and the narrow V-belt body of this utility model;

[0020] Figure 3 This is a schematic diagram of the connection structure between the toothed ring and the transmission toothed belt of this utility model;

[0021] Figure 4 This is a schematic diagram of the back structure of the fixing panel of this utility model;

[0022] Figure 5 This is a schematic diagram of the internal structure of the fixed frame of this utility model;

[0023] Figure 6 This is a schematic diagram of the tension wheel drive gear connection structure of this utility model.

[0024] In the diagram: 1. Fixed panel; 2. Drive wheel; 3. Driven wheel; 4. Narrow V-belt body; 5. Tensioner wheel; 51. Drive shaft; 6. Adjusting swing arm; 7. Transmission toothed belt; 8. Toothed ring; 9. Fixed frame; 91. Drive gear; 92. Transmission rack; 93. Limit plate; 94. Scale line; 10. Adjusting screw; 11. Drive knob; 12. Indicator plate; 13. Sealing plate. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1

[0027] Based on the existing problem that the traditional friction method between the tensioner 5 and the narrow V-belt typically exacerbates wear on both the narrow V-belt and the tensioner 5, the side of the narrow V-belt is prone to localized overheating, rubber aging, and even cracks or delamination under continuous friction. Tension fluctuations are also likely, leading to slippage between the narrow V-belt and the tensioner 5, resulting in unstable rotational speed. This embodiment provides a rubber-coated narrow V-belt tension adjustment device that replaces the traditional smooth surface friction contact with meshing transmission. Compared to the sliding friction loss of traditional friction-based methods, the overall efficiency is higher. Furthermore, because there is no slippage, power transmission is more direct, avoiding the additional energy consumption caused by slippage in friction-based methods. Please refer to... Figure 1 - Figure 5 This rubber-coiled narrow V-belt tensioning adjustment device includes a driving wheel 2 and a driven wheel 3 rotatably connected to the inner side of a fixed panel 1. In actual use, a protective frame is installed on the inner side of the fixed panel 1, covering the driving wheel 2, driven wheel 3, and tension wheel 5 inside the frame to prevent external factors from reducing their service life. A narrow V-belt body 4 is provided between the driving wheel 2 and the driven wheel 3. The driving wheel 2 is connected to an external power source. The friction between the narrow V-belt body 4 and the driving wheel 2 synchronously drives the driven wheel 3 to rotate. A tension wheel 5 is provided on the slack side of the driving wheel 2. (See attached diagram.) Figure 1 The direction indicated by the arrow, the side that enters the drive pulley 2 is called the tight side, and the side that exits the drive pulley 2 is called the loose side. Since the tight side and loose side of the narrow V-belt body 4 have a large difference in flexibility, placing the tensioning pulley 5 on the loose side requires a relatively small tension force, which can reduce the flexibility difference and improve transmission stability and reliability. The inner side of the fixed panel 1 rotates to drive the tensioning pulley 5 to swing and adjust the tension of the narrow V-belt body 4.

[0028] Traditional tensioning pulleys 5 and narrow V-belt bodies 4 rely on friction for tensioning transmission. This friction causes wear and heat on the belt surface, leading to thinning and cracking of the outer wall of the narrow V-belt over time. The tension pulley 5 also develops scratches and wear due to friction, affecting the lifespan of both. By using a mechanical meshing of teeth between the tension pulley 5 and the narrow V-belt body 4 to transmit force, friction is eliminated, preventing slippage at its source. Force transmission is more direct and stable, avoiding wear on the belt and tension pulley 5 caused by sliding friction, and significantly reducing the wear rate. Figure 2As shown, a drive toothed belt 7 is fixedly installed on the outer peripheral wall of the narrow V-belt body 4, and a toothed ring 8 is fixedly installed on the outer peripheral wall of the tensioning pulley 5. The drive toothed belt 7 and the toothed ring 8 mesh to reduce the friction between the narrow V-belt body 4 and the tensioning pulley 5. Both the drive toothed belt 7 and the toothed ring 8 are made of elastic material, which allows elastic deformation under small angular deviations and reduces rigid interference. The V-belt tooth profile is designed as an arc rather than a right angle to increase meshing tolerance.

[0029] Because the rubber-coated narrow V-belt body 4 gradually loosens due to material fatigue, thermal expansion and contraction, or load changes during long-term use, the tension decreases, thus affecting transmission performance. By setting an adjustable tensioning pulley 5, additional pressure can be applied to the narrow V-belt body 4 to compensate for the belt slack and ensure that the belt always maintains sufficient tension. Figure 1 - Figure 3 As shown, a drive shaft 51 is fixedly installed on the outer wall of the tension wheel 5 and rotatedly connected to the movable end of the adjusting arm 6. The two limiting edges of the tension wheel 5 are attached to the two sides of the narrow V-belt body 4. One end of the adjusting arm 6 is rotatably connected to the fixed panel 1, so that the movable end drives the tension wheel 5 to move downward in an approximately linear motion, applying additional pressure to the narrow V-belt body 4, and finally adjusting the tension of the narrow V-belt body 4. During the transmission process, the drive shaft 51 on the outer wall of the tension wheel 5 rotates at the end of the adjusting arm 6.

[0030] A fixed frame 9 is fixedly installed on the back of the fixed panel 1. A drive gear 91 is rotatably connected to the inner center of the fixed frame 9. The shaft of the drive gear 91 passes through the fixed panel 1 and is fixedly connected to the end of the adjusting arm 6. The drive gear 91, which is fixed to the end of the adjusting arm 6, is installed on the back. The drive gear 91 drives the adjusting arm 6 to rotate, so that the adjusting arm 6 adjusts the position of the tension wheel 5.

[0031] Example 2

[0032] Based on Example 1, such as Figure 4 - Figure 6As shown, the device is also equipped with a function to facilitate adjustment according to preset standards based on parameters such as belt type and transmission power, avoiding deviations caused by experience-based estimations and ensuring that the tension is within the optimal range. One side of the drive gear 91 is meshed with a transmission rack 92 that drives its own rotation. Both ends of the transmission rack 92 are fixedly installed with limiting plates 93 that are slidably connected to the fixed frame 9. The bottom inner wall of the fixed frame 9 is threaded with an adjusting screw 10. The end of the adjusting screw 10 is rotatably connected to the limiting plate 93. The end of the adjusting screw 10 extending outside the fixed frame 9 is fixedly installed with a drive knob 11. By rotating the drive knob 11, the drive knob 11 drives the adjusting screw 10 to be threadedly connected inside the fixed frame 9, so that the end of the adjusting screw 10 pushes the limiting plate 93 and the transmission rack 92 to slide inside the fixed frame 9. Through the meshing action between the transmission rack 92 and the drive gear 91, the drive gear 91 is rotated.

[0033] To ensure consistent tension across multiple operations or multiple units of the same model, and to reduce transmission performance instability caused by human error, such as... Figure 4 As shown, the outer wall of the fixed frame 9 is provided with a scale line 94, and an indicator plate 12 that works in conjunction with the scale line 94 is slidably connected to the outer wall of the fixed frame 9. When the transmission rack 92 moves and drives the drive gear 91 to rotate to adjust the moving position of the tension wheel 5, the transmission rack 92 can synchronously drive the indicator plate 12 to slide on the outer wall of the fixed frame 9, making it convenient to check the distance moved through the indicator plate 12, and more clearly clarifying the value of the tension adjustment of the tension wheel 5 on the narrow V-belt body 4. After the equipment is installed, repaired or the narrow V-belt is replaced, the tension needs to be readjusted. The scale line 94 provides a clear reference benchmark, and different operators can adjust according to the same scale value.

[0034] The side wall of the fixed frame 9 is provided with a strip groove. The end of the bottom limiting plate 93 passes through the strip groove and is fixedly connected to the indicator plate 12. The two sides of the indicator plate 12 are fixedly installed with sealing plates 13 to seal the strip groove. During the movement, the sealing plates 13 always remain on the outer wall of the strip groove and block it, thereby ensuring that the inside of the fixed frame 9 is always sealed.

[0035] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rubber-coated narrow V-belt tensioning adjustment device, comprising a driving wheel (2) and a driven wheel (3) rotatably connected to the inner side of a fixed panel (1), wherein a narrow V-belt body (4) is disposed between the driving wheel (2) and the driven wheel (3), characterized in that: A tensioning wheel (5) is provided on the outer slack side of the drive wheel (2), and an adjustment swing arm (6) is provided on the inner side of the fixed panel (1) to drive the tensioning wheel (5) to swing and adjust the tension of the narrow V-belt body (4). A transmission toothed belt (7) is fixedly installed on the outer peripheral wall of the narrow V-belt body (4), and a toothed ring (8) is fixedly installed on the outer peripheral wall of the tensioning wheel (5). The friction between the narrow V-belt body (4) and the tensioning wheel (5) is reduced by the meshing of the transmission toothed belt (7) and the toothed ring (8).

2. The tension adjustment device for a rubber-coated narrow V-belt according to claim 1, characterized in that: The outer wall of the tensioning wheel (5) is fixedly fitted with a drive shaft (51) that is rotatably connected to the movable end of the adjusting arm (6).

3. The tension adjustment device for a narrow V-belt of rubber assembly according to claim 1, characterized in that: The two limiting edges of the tensioning wheel (5) are attached to both sides of the narrow V-belt body (4).

4. The tension adjustment device for a rubber-coated narrow V-belt according to claim 1, characterized in that: A fixed frame (9) is fixedly installed on the back of the fixed panel (1). A drive gear (91) is rotatably connected to the inner center of the fixed frame (9). The axis of the drive gear (91) passes through the fixed panel (1) and is fixedly connected to the end of the adjusting arm (6).

5. The tension adjustment device for a narrow V-belt of rubber assembly according to claim 4, characterized in that: The drive gear (91) is meshed with a transmission rack (92) that drives itself to rotate on one side. The two ends of the transmission rack (92) are fixedly installed with limiting plates (93) that are slidably connected to the fixed frame (9). The inner bottom of the fixed frame (9) is threadedly connected with an adjusting screw (10). The end of the adjusting screw (10) is rotatably connected to the limiting plate (93). The end of the adjusting screw (10) extending to the outside of the fixed frame (9) is fixedly installed with a drive knob (11).

6. The tension adjustment device for a rubber-coated narrow V-belt according to claim 5, characterized in that: The outer wall of the fixed frame (9) is provided with scale lines (94), and the outer wall of the fixed frame (9) is slidably connected with an indicator plate (12) that works in conjunction with the scale lines (94).

7. The tension adjustment device for a narrow V-belt of rubber assembly according to claim 6, characterized in that: The side wall of the fixed frame (9) is provided with a strip groove, and the end of the bottom limiting plate (93) passes through the strip groove and is fixedly connected to the indicator plate (12). The two sides of the indicator plate (12) are fixedly installed with sealing plates (13) to seal the strip groove.

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