Belt tension adjusting device of ventilator
By combining the tension adjustment mechanism and the shock absorption mechanism, the belt tension is automatically adjusted, which solves the problem of unstable belt tension in traditional ventilation fans, extends belt life, and reduces maintenance costs.
Patent Information
- Application Number
- CN202520651064.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-07
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-04-07
AI Technical Summary
The belt tensioning mechanism of traditional fans lacks dynamic adaptability, which leads to deviations in belt tension adjustment, increasing wear and maintenance costs.
The belt tension is automatically adjusted by the combination of rollers and springs, and dynamic adaptive adjustment is achieved by the linkage of electric push rod and threaded rod. The noise is reduced by combining shock absorption mechanism and rubber pad.
It extends the service life of the belt, reduces maintenance costs, and improves the stability of tension and practicality.
Smart Images
Figure CN223894910U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a fan technical field, concretely is a belt tensioning adjusting device of fan. BACKGROUND
[0002] In the field of industrial production and building ventilation, as a key equipment, the fan undertakes the important task of adjusting indoor air quality, removing harmful gases and heat, etc. The fan system often directly transmits power to the fan blade through the shaft and the belt transmission device, so as to realize air flow
[0003] The traditional fan belt moves manually and uses the tensioning mechanism to adjust the belt tensioning, but the tensioning degree of the belt after the existing tensioning mechanism is adjusted is fixed, and lacks dynamic adaptability. In actual use, the tensioning degree is adjusted depending on experience, which may cause small range deviation, thereby causing the belt to be worn out during work, shortening the service life of the belt and increasing the maintenance cost.
[0004] Therefore, the application provides a belt tensioning adjusting device of fan. UTILITY MODEL CONTENTS
[0005] The utility model aims at providing a belt tensioning adjusting device of fan, which solves the problem in the background art.
[0006] The application embodiment provides a belt tensioning adjusting device of fan, which comprises a fan and a driving mechanism, a belt is transmissionally connected between the fan and the driving mechanism, the bottom of the belt is provided with a tensioning adjusting mechanism, the top of the tensioning adjusting mechanism is provided with two groups of damping mechanisms, the damping mechanism comprises a rectangular shell, the rectangular shell is connected with the tensioning adjusting mechanism, an adjusting plate is installed in the rectangular shell, the bottom end of the adjusting plate is provided with two groups of springs, the bottom end of the two groups of springs is provided with a rectangular block, a connecting shaft is fixedly installed between the two groups of rectangular blocks, a roller is rotationally connected to the outer surface of the connecting shaft, a damping adjusting mechanism is arranged in the middle of the adjusting plate, the damping adjusting mechanism comprises a threaded rod, the threaded rod is screwedly connected to the top of the rectangular shell, and the bottom end of the threaded rod penetrates the middle of the adjusting plate.
[0007] By adopting the technical scheme, the tension of the belt is adjusted by adjusting the lifting of the roller through the tension adjusting mechanism, and the two ends of the roller are connected with the two groups of springs through the connecting shaft and the rectangular block. When the tension of the belt is slightly adjusted, that is, the position of the roller is relatively low, the belt exerts an upward pressure on the roller during operation, and the spring is compressed to be elastically contracted, so that the position of the roller is correspondingly slightly lifted, thereby automatically adjusting the tension of the belt by the spring. Similarly, when the tension of the belt is slightly adjusted, that is, the position of the roller is relatively high, the compressed spring is automatically elastically contracted, so that the position of the roller is correspondingly slightly lowered, thereby automatically tensioning the belt and keeping the stability of the tension of the belt. Meanwhile, the height of the adjusting plate is adjusted by rotating the threaded rod, so that the adjusting plate compresses the spring to different degrees, thereby adjusting the pre-tightening force of the spring according to the requirement. The damping mechanism is beneficial to increasing the dynamic adaptability of the belt after the tension adjusting mechanism adjusts the tension of the belt, prolonging the service life of the belt and reducing the maintenance cost.
[0008] Optionally, the tension adjusting mechanism comprises an electric push rod, the telescopic end of the electric push rod is fixedly installed with a lifting plate, the top end of the lifting plate is fixedly installed with two groups of vertical rods, the two groups of vertical rods are respectively located on the two sides of the belt, the top end of the vertical rod is fixedly installed with a connecting block, and the connecting block is fixedly installed with the adjacent rectangular shell.
[0009] By adopting the technical scheme, the lifting plate and the vertical rod are synchronously displaced by the telescopic movement of the electric push rod, the position of the roller is moved by the linkage damping mechanism and the roller, the belt is tightened when the position of the roller is adjusted to be lower, and the belt is loosened when the position of the roller is adjusted to be higher, thereby adjusting the tension of the belt.
[0010] Optionally, the driving mechanism comprises a pad, the pad is placed on the side of the tension adjusting mechanism away from the ventilator, the top end of the pad is fixedly installed with two groups of racks, the two groups of racks are rotatably connected with a driving wheel, one side of one group of the racks is fixedly installed with a motor, the output end of the motor is fixedly installed with the driving wheel through the rack, the inside of the ventilator is rotatably connected with a driven wheel, and the driving wheel and the driven wheel are drivingly connected through the belt.
[0011] By adopting the technical scheme, the driving wheel is driven to rotate by starting the motor, the driving wheel drives the driven wheel to rotate through the belt, and the fan blades connected with the driven wheel are rotated to generate wind power.
[0012] Optionally, the two ends of the adjusting plate are fixedly installed with sliding blocks, and the inside of the rectangular shell is provided with sliding grooves matched with the two groups of sliding blocks.
[0013] By adopting the above technical solution, the slider moves in the groove during the height adjustment process of the adjusting plate, which guides the displacement of the adjusting plate, improves the uniformity of the two sets of springs in the preload adjustment process, and improves the practicality during use.
[0014] Optionally, a rubber pad is fixedly installed at the bottom of the rectangular shell, and the top of the rubber pad abuts against the rectangular block.
[0015] By adopting the above technical solution, the vibration of the rectangular block is absorbed by the rubber pad itself, thereby improving the shock absorption effect and reducing noise.
[0016] Optionally, a rectangular plate is fixedly installed between the ventilator and the drive mechanism, and the bottom end of the electric push rod is fixedly installed on the top end of the rectangular plate. A controller is fixedly installed on the top end of the rectangular plate near the ventilator, and the controller is electrically connected to the electric push rod.
[0017] By adopting the above technical solution, when the staff adjusts the belt tension, the controller can easily control the extension and retraction of the electric push rod, improving its practicality during use.
[0018] Optionally, both sets of springs are provided with telescopic guide rods inside, one end of which is fixedly installed with the adjusting plate, and the telescopic end of which is installed at the top of the rectangular block.
[0019] By adopting the above technical solution, the telescopic guide rod plays a guiding role during the extension and retraction of the spring, which minimizes the lateral deviation of the spring and extends its service life.
[0020] Optionally, a limit block is fixedly installed at the bottom end of the threaded rod.
[0021] By adopting the above technical solution, the limiting block prevents the threaded rod from detaching from the rectangular shell during adjustment, thus improving the limiting effect on the threaded rod during use.
[0022] Compared with the prior art, the beneficial effects of the technical solution of this application are as follows:
[0023] The belt tension is adjusted by raising and lowering the rollers through a tension adjustment mechanism. Since both ends of the rollers are connected to two sets of springs via shafts and rectangular blocks, when the belt tension is slightly tight (i.e., the rollers are positioned lower), the belt applies upward pressure, compressing the springs and causing the rollers to rise slightly, thus automatically loosening the belt tension. Similarly, when the belt tension is slightly loose (i.e., the rollers are positioned higher), the springs compress and lower slightly, automatically tightening the belt and maintaining stable tension. Simultaneously, rotating the threaded rod adjusts the height of the adjusting plate, allowing for different degrees of spring compression and adjustment of the spring preload as needed. The shock absorption mechanism enhances the belt's dynamic adaptability after tension adjustment, extending its service life and reducing maintenance costs.
[0024] The lifting plate and the upright are moved synchronously by the extension and retraction of the electric push rod. The position is moved by the shock absorption mechanism and the roller linked to the upright. The lower the position of the roller is adjusted, the tighter the belt is stretched. Conversely, the higher the position of the roller is adjusted, the looser the belt is stretched, thereby achieving the adjustment of belt tension. Attached Figure Description
[0025] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:
[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0027] Figure 2 This is a partial cross-sectional structural diagram of the present invention;
[0028] Figure 3 This is a schematic diagram of the tension adjustment mechanism.
[0029] Figure 4 for Figure 3 Enlarged structural diagram at point A in the middle;
[0030] Figure 5 This is a schematic diagram of the damping mechanism and the damping adjustment mechanism.
[0031] In the diagram: 1. Ventilation fan; 101. Driven wheel; 2. Rectangular plate; 3. Drive mechanism; 301. Pad block; 302. Frame; 303. Drive wheel; 304. Motor; 4. Belt; 5. Tension adjustment mechanism; 501. Electric push rod; 502. Lifting plate; 503. Upright pole; 504. Connecting block; 6. Shock absorption mechanism; 601. Rectangular shell; 602. Adjusting plate; 603. Spring; 604. Rectangular block; 605. Coupling shaft; 7. Roller; 8. Shock absorption adjustment mechanism; 801. Threaded rod; 802. Slider; 803. Slide groove; 9. Rubber pad; 10. Telescopic guide rod; 11. Limit block; 12. Controller. Detailed Implementation
[0032] Please see Figures 1-4 This utility model provides a technical solution: including a ventilator 1 and a drive mechanism 3, with a belt 4 connecting the ventilator 1 and the drive mechanism 3. A tension adjustment mechanism 5 is provided at the bottom of the belt 4, and two sets of shock-absorbing mechanisms 6 are provided at the top of the tension adjustment mechanism 5. The shock-absorbing mechanism 6 includes a rectangular shell 601, which is connected to the tension adjustment mechanism 5. An adjustment plate 602 is installed inside the rectangular shell 601. Two sets of springs 603 are installed at the bottom of the adjustment plate 602, and rectangular blocks 604 are installed at the bottom of the two sets of springs 603. A connecting shaft 605 is fixedly installed between the two sets of rectangular blocks 604. A roller 7 is rotatably connected to the outer surface of the connecting shaft 605. A shock-absorbing adjustment mechanism 8 is provided in the middle of the adjustment plate 602. The shock-absorbing adjustment mechanism 8 includes a threaded rod 801, which is threaded to the top of the rectangular shell 601, and the bottom end of the threaded rod 801 passes through the middle of the adjustment plate 602.
[0033] In this technical solution, the tension of the belt 4 is adjusted by regulating the lifting and lowering of the roller 7 through the tension adjustment mechanism 5. Since both ends of the roller 7 are connected to two sets of springs 603 via a connecting shaft 605 and a rectangular block 604, when the tension of the belt 4 is slightly tight (i.e., the roller 7 is positioned lower), the belt 4 applies an upward pressure to the roller 7 during operation. This compresses the springs 603, causing them to elastically contract and the position of the roller 7 to rise slightly. Thus, the tension of the belt 4 is automatically loosened by the springs 603. Similarly, when the tension of the belt 4 is slightly... When the belt is loose, i.e., the position of roller 7 is relatively high, the spring 603 will automatically contract elastically, causing the position of roller 7 to drop slightly, thereby automatically tightening the belt 4 and maintaining its tension stability. At the same time, by rotating the threaded rod 801 to adjust the height of the adjusting plate 602, the adjusting plate 602 can press the spring 603 to different degrees, so that the preload of the spring 603 can be adjusted as needed. The shock absorption mechanism 6 helps to increase the dynamic adaptability of the belt 4 after the tension adjustment mechanism 5 adjusts its tension, extending the service life of the belt 4 and reducing maintenance costs.
[0034] In some technical solutions, such as Figures 1-3 As shown, the tension adjustment mechanism 5 includes an electric push rod 501. A lifting plate 502 is fixedly installed at the telescopic end of the electric push rod 501. Two sets of uprights 503 are fixedly installed at the top of the lifting plate 502. The two sets of uprights 503 are located on both sides of the belt 4. A connecting block 504 is fixedly installed at the top of the uprights 503. The connecting block 504 is fixedly installed with the adjacent rectangular shell 601.
[0035] In use, the extension and retraction of the electric push rod 501 drives the lifting plate 502 and the upright rod 503 to move synchronously. The upright rod 503 is linked to the shock absorption mechanism 6 and the roller 7 to move in position. The lower the position of the roller 7, the tighter the belt 4 is. Conversely, the higher the position of the roller 7, the looser the belt 4 is, thereby adjusting the tension of the belt 4.
[0036] In some technical solutions, such as Figures 1-3 As shown, the drive mechanism 3 includes a pad 301, which is placed on the side of the tension adjustment mechanism 5 away from the fan 1. Two sets of frames 302 are fixedly installed on the top of the pad 301. A drive wheel 303 is rotatably connected between the two sets of frames 302. A motor 304 is fixedly installed on one side of one set of frames 302. The output end of the motor 304 passes through the frame 302 and is fixedly installed with the drive wheel 303. A driven wheel 101 is rotatably connected inside the fan 1. The drive wheel 303 and the driven wheel 101 are connected by a belt 4.
[0037] When in use, the motor 304 is started, which drives the drive wheel 303 to rotate. The drive wheel 303 drives the driven wheel 101 to rotate through the belt 4, which in turn drives the fan blades connected to the driven wheel 101 to rotate, generating wind power.
[0038] In some technical solutions, such as Figure 5 As shown, sliders 802 are fixedly installed at both ends of the adjusting plate 602, and the interior of the rectangular shell 601 is provided with grooves 803 that match the two sets of sliders 802.
[0039] During use, the slider 802 slides within the groove 803 during the height adjustment process of the adjusting plate 602, guiding the displacement of the adjusting plate 602, improving the uniformity of the two sets of springs 603 during the preload adjustment process, and enhancing the practicality of use.
[0040] In some technical solutions, such as Figure 4 As shown, a rubber pad 9 is fixedly installed at the bottom of the rectangular shell 601, and the top of the rubber pad 9 abuts against the rectangular block 604.
[0041] When in use, the rubber pad 9 absorbs the vibration of the rectangular block 604 through its own properties, thereby improving the shock absorption effect and reducing noise.
[0042] In some technical solutions, such as Figure 4 As shown, both sets of springs 603 are equipped with telescopic guide rods 10 inside. One end of the telescopic guide rod 10 is fixedly installed with the adjusting plate 602, and the telescopic end of the telescopic guide rod 10 is installed on the top of the rectangular block 604.
[0043] During use, the telescopic guide rod 10 plays a guiding role during the extension and retraction of the spring 603, which minimizes the lateral displacement of the spring 603 and extends its service life.
[0044] In some technical solutions, such as Figure 1 As shown, a rectangular plate 2 is fixedly installed between the ventilator 1 and the drive mechanism 3, and the bottom end of the electric push rod 501 is fixedly installed on the top end of the rectangular plate 2. A controller 12 is fixedly installed on the top end of the rectangular plate 2 near the ventilator 1, and the controller 12 is electrically connected to the electric push rod 501.
[0045] When the operator adjusts the tension of the belt 4, the controller 12 can be used to control the extension and retraction of the electric push rod 501, which improves the practicality of use.
[0046] In some technical solutions, such as Figure 1 As shown, a limit block 11 is fixedly installed at the bottom end of the threaded rod 801.
[0047] During use, the limiting block 11 prevents the threaded rod 801 from disengaging from the rectangular shell 601 during adjustment, thus improving the limiting effect on the threaded rod 801 during use.
[0048] Working principle: The tension of the belt 4 is adjusted by regulating the lifting and lowering of the roller 7 through the tension adjustment mechanism 5. Since both ends of the roller 7 are connected to two sets of springs 603 via the connecting shaft 605 and the rectangular block 604, when the tension of the belt 4 is slightly tight (i.e., the roller 7 is positioned lower), the belt 4 applies an upward pressure to the roller 7 during operation. This compresses the springs 603, causing them to elastically contract and the position of the roller 7 to rise slightly. Thus, the tension of the belt 4 is automatically loosened by the springs 603. Similarly, when the tension of the belt 4 is slightly loose (i.e., the roller 7 is positioned lower), the belt 4 is lower than the belt 7. When the roller 7 is positioned higher, the spring 603 will automatically contract elastically, causing the position of the roller 7 to drop slightly, thereby automatically tightening the belt 4 and maintaining its tension. At the same time, by rotating the threaded rod 801 to adjust the height of the adjusting plate 602, the adjusting plate 602 can press the spring 603 to different degrees. The extension and retraction of the electric push rod 501 drives the lifting plate 502 and the upright rod 503 to move synchronously. The upright rod 503 is linked to the shock absorption mechanism 6 and the roller 7 to move in position. The lower the position of the roller 7 is adjusted, the tighter the belt 4 is stretched, and vice versa.
[0049] In this process, the motor 304 is started to drive the drive wheel 303 to rotate. The drive wheel 303 drives the driven wheel 101 to rotate through the belt 4, which in turn drives the fan blades connected to the driven wheel 101 to rotate, generating wind. During the height adjustment process, the slider 802 of the adjusting plate 602 slides in the slide groove 803 to guide the displacement of the adjusting plate 602.
[0050] Meanwhile, the vibration of the rectangular block 604 is absorbed by the rubber pad 9 itself; when the staff adjusts the tension of the belt 4, the controller 12 can be used to control the extension and retraction of the electric push rod 501.
[0051] In addition, the telescopic guide rod 10 plays a guiding role during the extension and retraction of the spring 603; the limit block 11 prevents the threaded rod 801 from detaching from the rectangular shell 601 when it is adjusted.
Claims
1. A belt tension adjustment device for a ventilator, comprising a ventilator (1) and a drive mechanism (3), characterized in that: A belt (4) is connected between the ventilator (1) and the drive mechanism (3). A tension adjustment mechanism (5) is provided at the bottom of the belt (4). Two sets of shock absorption mechanisms (6) are provided at the top of the tension adjustment mechanism (5). The shock absorption mechanism (6) includes a rectangular shell (601). The rectangular shell (601) is connected to the tension adjustment mechanism (5). An adjustment plate (602) is installed inside the rectangular shell (601). Two sets of springs (603) are installed at the bottom of the adjustment plate (602). A rectangular block (604) is installed at the bottom of the spring (603), and a connecting shaft (605) is fixedly installed between the two sets of rectangular blocks (604). A roller (7) is rotatably connected to the outer surface of the connecting shaft (605). A shock-absorbing adjustment mechanism (8) is provided in the middle of the adjusting plate (602). The shock-absorbing adjustment mechanism (8) includes a threaded rod (801). The threaded rod (801) is threaded to the top of the rectangular shell (601), and the bottom end of the threaded rod (801) passes through the middle of the adjusting plate (602).
2. The belt tension adjustment device for a ventilator according to claim 1, characterized in that, The tension adjustment mechanism (5) includes an electric push rod (501), and a lifting plate (502) is fixedly installed at the telescopic end of the electric push rod (501). Two sets of uprights (503) are fixedly installed at the top of the lifting plate (502). The two sets of uprights (503) are located on both sides of the belt (4). A connecting block (504) is fixedly installed at the top of the uprights (503). The connecting block (504) is fixedly installed with the adjacent rectangular shell (601).
3. The belt tension adjustment device for a ventilator according to claim 1, characterized in that, The drive mechanism (3) includes a pad (301), which is placed on the side of the tension adjustment mechanism (5) away from the fan (1). Two sets of frames (302) are fixedly installed on the top of the pad (301). A drive wheel (303) is rotatably connected between the two sets of frames (302). A motor (304) is fixedly installed on one side of one set of frames (302). The output end of the motor (304) passes through the frame (302) and is fixedly installed with the drive wheel (303). A driven wheel (101) is rotatably connected inside the fan (1). The drive wheel (303) and the driven wheel (101) are connected by the belt (4).
4. The belt tension adjustment device for a ventilator according to claim 1, characterized in that, Both ends of the adjusting plate (602) are fixedly installed with sliders (802), and the interior of the rectangular shell (601) is provided with grooves (803) that match the two sets of sliders (802).
5. The belt tension adjustment device for a ventilator according to claim 1, characterized in that, A rubber pad (9) is fixedly installed at the bottom of the rectangular shell (601), and the top of the rubber pad (9) abuts against the rectangular block (604).
6. The belt tension adjustment device for a ventilator according to claim 2, characterized in that, A rectangular plate (2) is fixedly installed between the ventilator (1) and the drive mechanism (3), and the bottom end of the electric push rod (501) is fixedly installed on the top end of the rectangular plate (2). A controller (12) is fixedly installed on the top end of the rectangular plate (2) near the ventilator (1), and the controller (12) is electrically connected to the electric push rod (501).
7. The belt tension adjustment device for a ventilator according to claim 1, characterized in that, Both sets of springs (603) are equipped with telescopic guide rods (10) inside. One end of the telescopic guide rod (10) is fixedly installed with the adjusting plate (602), and the telescopic end of the telescopic guide rod (10) is installed at the top of the rectangular block (604).
8. The belt tension adjustment device for a ventilator according to claim 1, characterized in that, A limiting block (11) is fixedly installed at the bottom end of the threaded rod (801).