Belt-driven tensioning device

Abstract

The utility model discloses a belt drive tensioning device which comprises a mounting plate, a synchronous belt and two sets of synchronous wheels, and the two sets of synchronous wheels are distributed left and right and are sequentially and rotationally connected to the front wall of the mounting plate. The adjusting screw rotates to drive the moving block to move upwards, then the tensioning wheels are driven to move upwards, the synchronous belt is jacked upwards, then the loosened synchronous belt is tensioned, only one set of tensioning wheels is arranged below the synchronous belt, the structure is greatly simplified, operation is very convenient, and after adjustment is completed, the tensioning wheels are driven to move upwards. And the moving block and the mounting plate are locked through the locking screw, and the adjusting screw and the end panel are locked through the check nut, so that the stability of the device is greatly improved, and the condition that the moving block displaces in subsequent operation is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of transmission devices, in particular to a belt-driven tensioning device. Background Art

[0002] In chemiluminescent immunoassay instruments, especially fully automated ones, numerous transmission structures are used for power conversion. Transmission structures in medical devices are primarily categorized into three types: gear, lead screw, and belt. Compared to gear and lead screw transmissions, belt transmissions offer distinct advantages: 1) light weight; 2) low noise; 3) flexible installation and lower assembly requirements; 4) no lubrication required, resulting in no pollution to the surrounding environment; and 5) low maintenance. Therefore, of the three transmission structures mentioned above, belt transmissions are the most widely used. However, due to the inherent characteristics of the belt drive: the flexible body, although most of it is embedded with tensile-resistant fibers or even steel wires, the conveyor belt will still deform and stretch during long-term operation, causing the entire transmission mechanism to loosen, resulting in reduced accuracy, and even the belt falling off and shutting down. For this reason, there is a public technology on the market that proposes a belt drive tensioning device that is easy to adjust, including a tensioning wheel assembly, a conveyor belt, a driving wheel assembly, and a mounting base. The upper end of the mounting base is provided with the tensioning wheel assembly, two driving wheel assemblies are provided on one side of the tensioning wheel assembly, and two driven wheel assemblies are provided on the other side of the tensioning wheel assembly. The driving wheel assembly, the tensioning wheel assembly, and the driven wheel assembly are externally connected through the conveyor belt. This public technology can complete the tensioning and adjustment of the conveyor belt by rotating the set screw, without the need to disassemble any parts, greatly reducing the difficulty of the conveyor belt tensioning operation.

[0003] However, when adjusting the above-mentioned disclosed technology, two idler wheel bodies need to be used for coordination, which makes the structure too complicated. In addition, the screws for adjusting the height of the slider are not provided with a tightening structure, so that the position of the slider is easily changed during use due to vibration causing the screws to rotate. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a belt-driven tensioning device.

[0005] The cam is fixedly mounted on the front of the drive means and is provided with a toothed structure for rotating the guide wheels, the toothed structure being arranged on the support frame and the toothed structure being connected with the support wheel to the support frame.

[0006] As a further description of the above technical solution:

[0007] The outer circumferential wall of the tensioning wheel is provided with an anti-slip groove, and the width of the inner side wall of the anti-slip groove is consistent with the width of the synchronous belt.

[0008] As a further description of the above technical solution:

[0009] The rear wall of the fixed block is provided with a sliding groove, and the movable block is slidably connected to the inner side wall of the sliding groove.

[0010] As a further description of the above technical solution:

[0011] The inner wall of the moving block is provided with an oblong hole which is through-through from front to back, and the screw rod of the locking screw passes through the inner side wall of the oblong hole and is threadedly connected with the mounting plate.

[0012] As a further description of the above technical solution:

[0013] The front wall of the fixing block is provided with a through hole which is through from front to back, and the end of the locking screw away from the mounting plate is slidably connected with the inner side wall of the through hole.

[0014] As a further description of the above technical solution:

[0015] The adjustment structure is an adjustment screw, which is threadedly connected to the inner wall of the end panel. One end of the adjustment screw extends above the end panel and abuts against the lower wall of the moving block. The adjustment screw and the end panel are locked by a tightening nut.

[0016] The utility model has the following beneficial effects:

[0017] Compared with the existing technology, this belt-driven tensioning device drives the moving block to move upward by rotating the adjusting screw, and then drives the tensioning wheel to move upward to push the synchronous belt upward, and then tension the loose synchronous belt. Only one set of tensioning wheels is arranged under the synchronous belt, which greatly simplifies the structure and is very convenient to operate. After the adjustment is completed, the moving block is locked to the mounting plate by the locking screw, and the adjusting screw is locked to the end panel by tightening the nut, which greatly improves the stability of the device and avoids displacement of the moving block in subsequent operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a belt-driven tensioning device proposed by the utility model;

[0019] Figure 2 This is a partial sectional side view of the overall structure of a belt-driven tensioning device proposed by the present invention;

[0020] Figure 3 This is a schematic diagram of the fixed block structure of a belt-driven tensioning device proposed by the present invention;

[0021] Figure 4 This is a schematic structural diagram of a moving block of a belt-driven tensioning device proposed by the present invention.

[0022] Legend:

[0023] 1. Mounting plate; 2. Synchronous pulley; 3. Synchronous belt; 4. End panel; 5. Fixed block; 501. Slide groove; 502. Through hole; 6. Tensioning pulley; 601. Anti-slip groove; 7. Spring retaining ring; 8. Wheel axle; 9. Adjusting screw; 10. Locking screw; 11. Tightening nut; 12. Moving block; 1201. Oblong hole. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] Reference Figures 1 to 4 The utility model provides a belt-driven tensioning device: comprising a mounting plate 1, a synchronous belt 3 and two sets of synchronous wheels 2, the two sets of synchronous wheels 2 are distributed left and right and rotated in sequence and connected to the front wall of the mounting plate 1, and the synchronous belt 3 is sleeved on the outer walls of the two sets of synchronous wheels 2;

[0026] like Figure 1 、 Figure 2 as well as Figure 3 As shown, in order to install the moving block 12, the front wall of the mounting plate 1 is fixedly connected with the end panel 4 near the lower wall, the end panel 4 is located in the center of the left and right directions of the mounting plate 1, the upper wall of the end panel 4 is fixedly connected with the fixing block 5, the rear wall of the fixing block 5 is fixedly connected to the front wall of the mounting plate 1, and the moving block 12 is slidably connected between the fixing block 5 and the mounting plate 1, and the rear wall of the fixing block 5 is provided with a slide groove 501, and the moving block 12 is slidably connected to the inner wall of the slide groove 501. Through the limitation of the slide groove 501, the moving block 12 can only slide up and down along the inner cavity of the slide groove 501, and the slide groove 501 plays the role of installation limitation for the moving block 12;

[0027] like Figure 1 、 Figure 2 as well as Figure 4 As shown, in order to fix the moving block 12 after the adjustment is completed, the moving block 12 is locked with the mounting plate 1 by the locking screw 10, and the inner wall of the moving block 12 is provided with an oblong hole 1201 that passes through the front and back. The screw portion of the locking screw 10 passes through the inner wall of the oblong hole 1201 and is threadedly connected with the mounting plate 1. The front wall of the fixed block 5 is provided with a through hole 502 that passes through the front and back. The end of the locking screw 10 away from the mounting plate 1 is slidably connected with the inner wall of the through hole 502. The through hole 502 is provided to facilitate the operation of the locking screw 10 without disassembling other parts. The wrench can be inserted into the through hole 502 for operation. After the position of the moving block 12 is adjusted, the screw portion of the locking screw 10 passes through the oblong hole 1201 and is locked with the mounting plate 1 to maintain the position of the moving block 12 and prevent displacement.

[0028] like Figure 1 、 Figure 2 As shown, in order to adjust the height position of the moving block 12, an adjustment structure for adjusting the horizontal height of the moving block 12 is provided between the end panel 4 and the moving block 12. The adjustment structure is an adjusting screw 9, which is threadedly connected to the inner wall of the end panel 4. The adjusting screw 9 extends to one end above the end panel 4 and abuts against the lower wall of the moving block 12. The adjusting screw 9 and the end panel 4 are locked by a tightening nut 11. After loosening the tightening nut 11, the height position of the moving block 12 can be adjusted by rotating the adjusting screw 9, thereby achieving the function of adjusting the height of the tensioning wheel 6. After the adjustment is completed, the adjusting screw 9 and the end panel 4 are locked by tightening the nut 11, which can further improve the stability of the device.

[0029] like Figure 1 、 Figure 2As shown, in order to lift the relaxed synchronous belt 3 upward for tensioning, the front wall of the moving block 12 and near the upper end position is rotatably connected to the tensioning wheel 6 through the wheel axle 8, and the tensioning wheel 6 is limited to the axial position on the wheel axle 8 by the spring retaining ring 7. The circumferential outer wall of the tensioning wheel 6 is rollingly connected to the lower wall of the synchronous belt 3, and the circumferential outer wall of the tensioning wheel 6 is provided with an anti-slip groove 601. The inner wall width of the anti-slip groove 601 coincides with the width of the synchronous belt 3. The anti-slip groove 601 is to avoid dislocation between the synchronous belt 3 and the tensioning wheel 6. After the moving block 12 moves upward, it drives the tensioning wheel 6 to move upward, and then lifts the synchronous belt 3 upward to offset the distance extended by the synchronous belt 3 due to relaxation, thereby achieving the purpose of tensioning. The device structure is very simple, easy to operate, and highly practical.

[0030] Working principle: The moving block 12 is slidably connected to the inner wall of the slide groove 501. Through the limit of the slide groove 501, the moving block 12 can only slide up and down along the inner cavity of the slide groove 501. The slide groove 501 plays the role of installation limit for the moving block 12. The through hole 502 is set to facilitate the operation of the locking screw 10 without disassembling other parts. The wrench can be inserted into the through hole 502 for operation. After the position adjustment of the moving block 12 is completed, the screw part of the locking screw 10 passes through the oblong hole 1201 and is locked with the mounting plate 1 to maintain the position of the moving block 12 to avoid displacement. Loosen and tighten the nut 11, the height position of the moving block 12 can be adjusted by rotating the adjusting screw 9, thereby achieving the function of adjusting the height of the tensioning wheel 6. After the adjustment is completed, the adjusting screw 9 and the end panel 4 are locked by tightening the nut 11, which can further improve the stability of the device. The anti-slip groove 601 is to avoid dislocation between the synchronous belt 3 and the tensioning wheel 6. After the moving block 12 moves up, it drives the tensioning wheel 6 to move up, and then pushes the synchronous belt 3 upward to offset the distance extended by the synchronous belt 3 due to relaxation, thereby achieving the purpose of tensioning. The device structure is very simple, easy to operate, and highly practical.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A belt-driven tensioning device, characterized in that: The invention comprises a mounting plate (1), a synchronous belt (3) and two sets of synchronous wheels (2), wherein the two sets of synchronous wheels (2) are distributed in the left and right directions and are rotatably connected to the front wall of the mounting plate (1), the synchronous belt (3) is sleeved on the outer walls of the two sets of synchronous wheels (2), the front wall of the mounting plate (1) and a position close to the lower wall are fixedly connected to an end panel (4), the end panel (4) is located in the middle of the left and right directions of the mounting plate (1), the upper wall of the end panel (4) is fixedly connected to a fixed block (5), the rear wall of the fixed block (5) is fixedly connected to the front wall of the mounting plate (1), and the fixed block (5) A moving block (12) is slidably connected to the mounting plate (1), and the moving block (12) is locked to the mounting plate (1) by a locking screw (10). An adjusting structure for adjusting the horizontal height of the moving block (12) is provided between the end panel (4) and the moving block (12). A tensioning wheel (6) is rotatably connected to the front wall of the moving block (12) near the upper end position through the wheel shaft (8). The tensioning wheel (6) is limited to an axial position on the wheel shaft (8) by a spring retaining ring (7), and the circumferential outer wall of the tensioning wheel (6) is rollingly connected to the lower wall of the synchronous belt (3).

2. A belt-driven tensioning device according to claim 1, characterized in that: An anti-slip groove (601) is provided on the circumferential outer wall of the tensioning wheel (6), and the width of the inner side wall of the anti-slip groove (601) matches the width of the synchronous belt (3).

3. A belt-driven tensioning device according to claim 2, characterized in that: The rear wall of the fixed block (5) is provided with a sliding groove (501), and the movable block (12) is slidably connected to the inner wall of the sliding groove (501).

4. A belt-driven tensioning device according to claim 3, characterized in that: The inner wall of the moving block (12) is provided with an oblong hole (1201) that passes through from front to back, and the screw portion of the locking screw (10) passes through the inner wall of the oblong hole (1201) and is threadedly connected to the mounting plate (1).

5. A belt-driven tensioning device according to claim 4, characterized in that: The front wall of the fixing block (5) is provided with a through hole (502) that passes through from front to back, and the end of the locking screw (10) away from the mounting plate (1) is slidably connected to the inner wall of the through hole (502).

6. A belt-driven tensioning device according to claim 5, characterized in that: The adjusting structure is an adjusting screw (9), which is threadedly connected to the inner wall of the end panel (4). One end of the adjusting screw (9) extends above the end panel (4) and abuts against the lower wall of the moving block (12). The adjusting screw (9) and the end panel (4) are locked by a tightening nut (11).

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