Tooth skipping prevention device for synchronous belt

Abstract

The utility model discloses a synchronous belt tooth skipping prevention device which comprises a supporting frame, a synchronous belt mechanism and a tooth skipping prevention mechanism, the synchronous belt mechanism is composed of a driving belt wheel, a driven belt wheel and a synchronous belt, the tooth skipping prevention mechanism comprises a first fixing plate and a second fixing plate, and a driving shaft on the first fixing plate is connected with a gear motor and the driving belt wheel. The driven belt wheel is installed on the second fixing plate through a driven shaft, a first roller and a second roller are arranged on the engaging-in side and the engaging-out side of the driving belt wheel respectively, the peripheral faces of the first roller and the second roller abut against the outer side of the synchronous belt and are matched with the outline of the driving belt wheel, and tooth jumping of the synchronous belt is restrained through bidirectional pressing. The synchronous belt tooth skipping problem is effectively solved, and high precision and stability of synchronous belt transmission are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of synchronous belt drive technology, specifically to a synchronous belt anti-tooth skipping device. Background Technology

[0002] Synchronous belt and chain drives are widely used in non-standard industries. They rely on the meshing of the teeth on the belt and the grooves on the pulleys to achieve high-precision synchronous transmission. They play a key role in scenarios with high requirements for precision, efficiency, and reliability, and their applications cover multiple industries such as electronic equipment manufacturing, automated production lines, and precision instruments.

[0003] However, in actual transmission, severe challenges are often encountered. On-site working conditions are complex and variable, with frequent load changes. For example, on automated production lines, when the material conveying volume suddenly increases, mechanical parts jam, or external factors such as mechanical vibrations around the equipment or unexpected external impacts affect the transmission system, the load on the transmission system will rapidly increase. This drastic load fluctuation can disrupt the originally stable meshing relationship between the synchronous belt or chain and the pulleys, causing tooth skipping on the pulleys. Tooth skipping not only reduces transmission accuracy, leading to equipment operation deviations and affecting product processing quality, but can also cause equipment failure, increasing the frequency of equipment repair and maintenance costs. In severe cases, it can even cause production stoppages, resulting in economic losses for the company.

[0004] Therefore, how to overcome the shortcomings of the existing technology mentioned above has become the subject of this application. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a timing belt anti-skip tooth device.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A timing belt anti-tooth skipping device includes a support frame, on which a timing belt mechanism and an anti-tooth skipping mechanism acting on the timing belt mechanism are mounted; the timing belt mechanism includes a driving pulley and a driven pulley that are meshed together by the timing belt.

[0008] The anti-tooth skipping mechanism includes a first fixed plate and a second fixed plate arranged vertically. The first fixed plate has a through hole on its side, through which a drive shaft passes. One end of the drive shaft is connected to a geared motor, and the other end is connected to the drive pulley. The geared motor transmits power to the drive pulley through the drive shaft. The driven pulley is rotatably mounted on the second fixed plate through the driven shaft, forming the two end supports of the synchronous belt drive with the drive pulley.

[0009] The first fixing plate is provided with a first roller and a second roller on both sides of the drive pulley. The first roller is located on the engagement side of the synchronous belt entering the drive pulley, and the second roller is located on the disengagement side of the synchronous belt leaving the drive pulley. The outer peripheral surfaces of the first roller and the second roller abut against the outer side of the tooth surface meshing area of ​​the synchronous belt and the drive pulley, and are adapted to the outer circumference of the drive pulley, so as to suppress the tendency of the synchronous belt to disengage from the tooth surface of the drive pulley through contact pressure when the synchronous belt is under load.

[0010] Furthermore, the first fixing plate is equipped with mounting bases at both the first roller and the second roller. The mounting base extends in a direction away from the first fixing plate and has a roller fixing plate installed at its end. The roller fixing plate covers the mounting base. The central axes of the first roller and the second roller are rotatably connected to the roller fixing plate through bearing components.

[0011] Furthermore, both the first fixing plate and the second fixing plate are fixed to both ends of the support frame by support plates.

[0012] Furthermore, the outer peripheral surfaces of both the first roller and the second roller are covered with an elastic buffer layer.

[0013] Furthermore, a slide is mounted on the synchronous belt, and a connecting plate is mounted on the slide.

[0014] Furthermore, the geared motor is fixed to the first fixing plate.

[0015] Furthermore, a leveling mechanism is provided at the bottom of the support frame.

[0016] Furthermore, at least one guide shaft is provided between the first fixing plate and the second fixing plate, and the two ends of the guide shaft are respectively fixed to the first fixing plate and the second fixing plate.

[0017] Furthermore, the tooth profile of the synchronous belt is trapezoidal or involute, and the tooth profiles of the driving pulley and the driven pulley are adapted to the tooth profile of the synchronous belt.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: by setting rollers on the engagement and disengagement sides of the drive pulley respectively, the synchronous belt is pressed in both directions, and the outer circumferential surface of the roller is adapted to the outer circumferential contour of the drive pulley. When the synchronous belt is under load, it can accurately suppress the tendency of the belt to separate from the tooth surface of the drive pulley, effectively solve the problem of tooth skipping, and ensure the high precision and stability of the synchronous belt drive. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Appendix Figure 1 This is a schematic diagram of the structure of an embodiment of this application;

[0021] Appendix Figure 2 This is a schematic diagram of the anti-tooth skipping mechanism according to an embodiment of this application.

[0022] Explanation of reference numerals and components in the accompanying drawings:

[0023] 1. Support frame; 2. Synchronous belt mechanism; 21. Synchronous belt; 22. Drive pulley; 23. Driven pulley; 3. Anti-tooth skipping mechanism; 31. First fixed plate; 32. Second fixed plate; 33. Drive shaft; 34. First roller; 35. Second roller; 36. Mounting base; 37. Roller fixing plate; 4. Gear motor; 5. Slide table; 6. Connecting plate. Detailed Implementation

[0024] The technical solution of this utility model will now be clearly and completely described through specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0025] See appendix Figure 1 and attached Figure 2As shown, this application provides a synchronous belt anti-tooth-skipping device with a simple structure, convenient installation, and significant anti-tooth-skipping effect, solving the problem of tooth skipping in existing synchronous belt drive systems under high load or impact load. It includes a support frame 1, on which a synchronous belt mechanism 2 and an anti-tooth-skipping mechanism 3 are mounted. The synchronous belt mechanism 2 includes a driving pulley 22 and a driven pulley 23 connected by a synchronous belt 21 to transmit power. The anti-tooth-skipping mechanism 3 is used to prevent tooth skipping of the synchronous belt 21 during transmission. The anti-tooth-skipping mechanism 3 includes a first fixed plate 31 and a second fixed plate 32 arranged vertically. The first fixed plate 31 has a through hole on its side, through which a driving shaft 33 passes. One end of the driving shaft 33 is connected to a reduction motor 4, and the other end is connected to the driving pulley 22. The reduction motor 4 transmits power to the driving pulley 22 through the driving shaft 33. Driven pulley 23 is rotatably mounted on the second fixed plate 32 via driven shaft, forming the two end supports of synchronous belt 21 transmission with drive pulley 22.

[0026] On the first fixed plate 31, a first roller 34 and a second roller 35 are respectively arranged on both sides of the driving pulley 22. The first roller 34 is installed on the engagement side where the synchronous belt 21 enters the driving pulley 22, and the second roller 35 is installed on the disengagement side where the synchronous belt 21 leaves the driving pulley 22. The outer circumferential surfaces of these two rollers abut against the outer side of the meshing area between the synchronous belt 21 and the driving pulley 22 teeth, and are adapted to the outer circumference of the driving pulley 22. As can be seen from the above, when the geared motor 4 drives the drive shaft 33 to rotate, the driving pulley 22 rotates accordingly, and power is transmitted through the synchronous belt 21 and the driven pulley 23. During the transmission process, the engagement and disengagement sides of the synchronous belt 21 are the areas with the highest risk of tooth skipping. Since the first roller 34 is located on the engagement side of the synchronous belt 21, its outer circumference contacts the outer side of the synchronous belt 21 and applies appropriate pressure. When the synchronous belt 21 is about to enter the drive pulley 22, this pressure causes the synchronous belt teeth and the drive pulley teeth to enter a stable meshing state in advance, avoiding tooth slippage caused by sudden load changes. The second roller 35 is located on the disengagement side of the synchronous belt 21. Through contact pressure, it prevents the synchronous belt 21 from skipping teeth due to inertia or tension changes the instant it leaves the drive pulley 22. Especially when the load suddenly increases, the pressing effect of the second roller 35 can effectively maintain the contact state between the synchronous belt and the pulley tooth surface. Through the coordinated work of the first roller 34 and the second roller 35, a two-way constraint on the meshing area of ​​the synchronous belt 21 can be formed, controlling the risk of tooth skipping at the critical positions at both ends of the drive pulley 22, thereby significantly improving the anti-tooth skipping effect.

[0027] Preferably, the outer circumferential surfaces of the first roller 34 and the second roller 35 are provided with elastic buffer layers. While providing pressing force, the elastic buffer layers can absorb vibrations and impacts during transmission, reducing damage to the synchronous belt 21 caused by rigid contact. In addition, the deformation characteristics of the elastic buffer layers allow the rollers to adapt to slight deviations of the synchronous belt 21, ensuring uniform and stable contact pressure.

[0028] Preferably, mounting bases 36 are installed on the side of the first fixed plate 31 at positions corresponding to the first roller 34 and the second roller 35. The mounting bases 36 extend away from the first fixed plate 31, and roller fixing plates 37 are installed at their ends. The roller fixing plates 37 cover the mounting bases 36. The central axes of the first roller 34 and the second roller 35 are rotatably connected to the roller fixing plates by means of bearing components, which not only ensures the flexible rotation of the rollers, but also improves the stability of the installation.

[0029] Preferred options are listed in the appendix. Figure 1 As shown, in this embodiment, the first fixing plate 31 and the second fixing plate 32 are both fixed to both ends of the support frame 1 by support plates.

[0030] Preferred options are listed in the appendix. Figure 1 and attached Figure 2 As shown, in this embodiment, a slide table 5 is mounted on the synchronous belt 21, and a connecting plate 6 is mounted on the slide table 5. The slide table 5 is mounted on the synchronous belt 21 and can move linearly with the synchronous belt 21. The connecting plate 6 serves as a connection medium between the slide table 5 and external working components. Through the connecting plate 6, different types of loads can be quickly mounted onto the slide table 5, enabling the power of the synchronous belt 21 to be efficiently and stably transmitted to the load, meeting diverse industrial application needs.

[0031] Preferably, in this embodiment, the geared motor 4 is fixed on the first fixed plate 31. The geared motor 4 is connected to the first fixed plate 31 through a shock-absorbing pad. The shock-absorbing pad is made of silicone material with a thickness of 2-3mm, which can effectively reduce the vibration generated by the geared motor 4 during operation and transmit it to other components of the anti-gear skipping device, thus avoiding the impact of vibration on the transmission accuracy and anti-gear skipping effect of the synchronous belt.

[0032] Preferably, in this embodiment, the bottom of the support frame 1 is provided with a leveling mechanism. The leveling mechanism includes a threaded sleeve fixed to the bottom of the support frame 1, an adjusting screw threadedly connected to the threaded sleeve, and a rubber pad installed at the bottom of the adjusting screw. The outer circumferential surface of the adjusting screw is provided with anti-slip knurling.

[0033] Preferably, in this embodiment, at least one guide shaft is provided between the first fixing plate 31 and the second fixing plate 32, with both ends of the guide shaft fixed to the first fixing plate 31 and the second fixing plate 32, respectively. The guide shaft provides a precise guiding reference for the installation and movement of the fixing plates.

[0034] Preferably, the tooth profile of the synchronous belt 21 is trapezoidal tooth or involute tooth, and the tooth profiles of the driving pulley 22 and the driven pulley 23 are adapted to the tooth profile of the synchronous belt 21.

[0035] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A synchronous belt skip tooth prevention device characterized by comprising: The support frame is provided with a synchronous belt mechanism and an anti-jumping mechanism acting on the synchronous belt mechanism; the synchronous belt mechanism comprises a driving pulley and a driven pulley connected by a synchronous belt; The anti-jumping mechanism comprises first and second fixed plates arranged in the vertical direction, the first fixed plate is provided with a through hole on the side, and a driving shaft is arranged in the through hole; one end of the driving shaft is connected with a speed reducer, and the other end is connected with the driving pulley; the speed reducer transmits power to the driving pulley through the driving shaft; the driven pulley is rotatably arranged on the second fixed plate through a driven shaft, and forms two end supports of the synchronous belt transmission with the driving pulley. The first fixed plate is provided with first and second rollers on the two sides of the driving pulley; the first roller is arranged on the meshing side of the synchronous belt entering the driving pulley, and the second roller is arranged on the meshing side of the synchronous belt leaving the driving pulley; the outer circumferential surfaces of the first and second rollers are in abutment with the outer side of the meshing area of the synchronous belt and the tooth surface of the driving pulley, and are matched with the outer contour of the driving pulley, so as to inhibit the disengagement trend of the synchronous belt and the tooth surface of the driving pulley through contact pressure when the synchronous belt is loaded.

2. The device according to claim 1, wherein The side of the first fixed plate is provided with a mounting base at the positions of the first and second rollers, the mounting base extends away from the first fixed plate and is provided with a roller fixing plate at the end thereof, the roller fixing plate covers the mounting base, and the central shafts of the first and second rollers are rotatably connected with the roller fixing plate through bearings.

3. The device according to claim 1, wherein The first and second fixed plates are fixed at the two ends of the support frame through support plates.

4. The device according to claim 1, wherein The outer circumferential surfaces of the first and second rollers are covered with elastic buffer layers.

5. The device according to claim 1, wherein A sliding table is arranged on the synchronous belt, and a connecting plate is arranged on the sliding table.

6. The device according to claim 1, wherein The speed reducer is fixed on the first fixed plate.

7. The device according to claim 1, wherein A leveling mechanism is arranged at the bottom of the support frame.

8. The device according to claim 1, wherein At least one guide shaft is arranged between the first and second fixed plates, and the two ends of the guide shaft are fixed to the first and second fixed plates respectively.

9. The device according to claim 1, wherein The teeth of the synchronous belt are trapezoidal teeth or involute teeth, and the teeth of the driving and driven pulleys are matched with the teeth of the synchronous belt.

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