Synchronous belt tension adjusting device

Abstract

The utility model discloses a synchronous belt tension adjusting device which comprises a slide way and a matching part, wherein the slide way is formed in a shell and provided with a driving block and a sliding block, and the matching part is matched with a driven wheel; the slide block is embedded in the slide way and is in sliding connection with the slide way; the driving block is arranged in the slide way away from the motor connected with the driving wheel, the depth of the driving block inserted into the shell is adjustable, the driving block abuts against the second end of the sliding block, and the relative position of the sliding block and the slide way is adjusted by adjusting the depth of the driving block inserted into the shell. The first end of the sliding block slides out of the shell under the action of the driving block and abuts against the motor, and therefore the tensioning force of the synchronous belt arranged outside the driving wheel and the driven wheel in a sleeving mode is adjusted. The driving block drives the sliding block to move, the degree of freedom in the vertical direction and the degree of freedom in the horizontal direction are adaptively converted according to the operation space of the synchronous belt, the tensioning force of the synchronous belt is adjusted by adjusting the distance between the shell and the extending end of the driving block, and the adaptability is wide.

Description

Technical Field

[0001] The utility model relates to the technical field of adjusting devices, and specifically, it is a synchronous belt tension adjusting device. Background Art

[0002] Currently, the methods for measuring and adjusting the tension of synchronous belts mostly involve measuring the vibration frequency of the synchronous belt or directly pressing the synchronous belt and measuring the deformation amount of the synchronous belt. The above methods all require direct contact with the synchronous belt to make it vibrate or the synchronous belt to deform for measurement. When operating in a narrow space, the operator cannot directly touch the synchronous belt, or it will be very difficult to operate when the distance between the driving and driven wheels is very small. Content of the Utility Model

[0003] In order to solve the above technical problems, the purpose of the utility model is to provide a synchronous belt tension adjusting device, which is convenient for adjusting and controlling the tension of the synchronous belt in a narrow working space.

[0004] The utility model solves the above problems through the following technical solutions:

[0005] A synchronous belt tension adjusting device includes: a housing, in which a slideway for arranging a driving block and a slider is formed, and a matching part for cooperating with a driven wheel; the slider is embedded in the slideway and is slidably connected with the slideway; the driving block is arranged in the slideway away from the motor connected to the driving wheel and the depth inserted into the housing is adjustable. The driving block abuts against the second end of the slider. By adjusting the depth of the driving block inserted into the housing, the relative position of the slider and the slideway is adjusted, so that the first end of the slider slides out of the housing under the action of the driving block and abuts against the motor, thereby adjusting the tension of the synchronous belt sleeved outside the driving wheel and the driven wheel.

[0006] As a further improvement of the utility model, the matching part of the housing is inserted into the driven wheel and is in clearance fit with the driven wheel.

[0007] As a further improvement of the utility model, the slideway is a circumferentially closed concave cavity, and the slider is in clearance fit with the inner wall of the concave cavity of the slideway.

[0008] As a further improvement of the utility model, a first waist-shaped hole for a slider limit screw to pass through is formed on the slider. One end of the slider limit screw passes through the first waist-shaped hole and is connected and fixed to the housing, and the slider is slidably matched with the slideway through the first waist-shaped hole.

[0009] As a further improvement of the utility model, a screw hole for a driving screw to pass through is formed on the driving block. One end of the driving screw passes through the driving block and is connected to the housing. The driving block abuts against the slideway, and the driving block moves along the slideway by rotating the driving screw.

[0010] As a further improvement of the present utility model, a first inclined surface which is matched with the driving block is arranged at the second end of the sliding block.

[0011] As a further improvement of the present utility model, a slideway inclined surface which is matched with the driving block is arranged in the slideway, and the driving screw is arranged in parallel with the slideway inclined surface.

[0012] As a further improvement of the present utility model, an additional sliding block is arranged at one end of the sliding block far away from the driving block, and the additional sliding block is matched with the motor.

[0013] As a further improvement of the present utility model, the additional sliding block is slidably arranged in the slideway, and an additional sliding block inclined surface which is matched with the sliding block is arranged on the additional sliding block.

[0014] As a further improvement of the present utility model, a second waist-shaped hole which is matched with an additional sliding block screw is formed on the additional sliding block, one end of the additional sliding block screw passes through the housing and is matched with the second waist-shaped hole, and the additional sliding block has the freedom degree of moving in the slideway through the second waist-shaped hole;

[0015] A pressure sensor which is in contact and cooperation with the motor is arranged on the adjusting device, and the pressure sensor is arranged on the sliding block or the additional sliding block.

[0016] Compared with the prior art, the present utility model has the following advantages and beneficial effects:

[0017] (1). The driving block of the present utility model drives the sliding block to move, realizes the adaptive conversion of the degrees of freedom in the vertical direction and the horizontal direction according to the working space of the synchronous belt, and adjusts the tension of the synchronous belt by adjusting the distance between the housing and the extended end of the driving block, with wide adaptability.

[0018] (2). The present utility model is connected with a pressure display through the pressure sensor, and can observe the tension of the synchronous belt in real time, improving the reliability of the adjustment. Description of the Drawings

[0019] Figure 1 It is a schematic diagram of the cooperation between a synchronous belt tension adjusting device and a motor in Embodiment 1;

[0020] Figure 2 It is a schematic diagram of the cooperation between the sliding block and the housing in Embodiment 1;

[0021] Figure 3 It is a schematic diagram of the cooperation between the driving screw and the driving block in Embodiment 1;

[0022] Figure 4 It is a working schematic diagram of a synchronous belt tension adjusting device in Embodiment 1;

[0023] Figure 5Schematic diagram of the drive of a synchronous belt tension adjusting device in Embodiment 1;

[0024] Figure 6 Schematic diagram of the structure of a synchronous belt tension adjusting device in Embodiment 2;

[0025] Figure 7 Schematic diagram of the drive of a synchronous belt tension adjusting device in Embodiment 2;

[0026] Figure 8 Schematic diagram of the structure of a synchronous belt tension adjusting device in Embodiment 3;

[0027] Figure 9 Schematic diagram of the drive of a synchronous belt tension adjusting device in Embodiment 3;

[0028] Figure 10 Operation schematic diagram of a synchronous belt tension adjusting device in Embodiment 3.

[0029] Reference numerals:

[0030] 1. Housing; 2. Driving screw; 3. Driving block; 4. Slide block; 5. Slide block limit screw; 6. Pressure sensor; 7. Additional slide block; 8. First kidney-shaped hole; 9. Screw hole; 10. First groove; 11. First inclined surface; 12. Slideway inclined surface; 13. Additional slide block inclined surface; 14. Second inclined surface; 15. Additional slide block screw; 16. Second kidney-shaped hole; 101. Motor; 102. Driving wheel; 103. Synchronous belt; 104. Outside the driven wheel. Detailed implementation manners

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] Embodiment 1;

[0033] Combined with the attached Figure 1As shown in the figure, the shaft of the motor 101 is connected with a driving pulley 102. The synchronous belt 103 is sleeved outside the driving pulley 102 and the driven pulley 104. The driving pulley 102 is driven by the motor 101, and then the driven pulley 104 is driven to rotate together through the synchronous belt 103. A synchronous belt tension adjusting device in this embodiment includes: a housing 1, a slider 4 and a driving block 3. The lower end of the housing 1 is arranged inside the driven pulley, and a matching part for the driven pulley is arranged at the lower end of the housing. The lower end of the housing 1 is coaxially arranged with the driven pulley and does not rotate with the driven pulley; a slideway is opened at the upper end of the housing 1. The slider 4 is embedded in the slideway and can move left and right in the slideway. When the slider moves leftward, it abuts against the motor. By moving the position of the slider 4 left and right, the distance between the driving pulley and the driven pulley is adjusted, so as to realize the adjustment of the synchronous belt tension; the driving block 3 is arranged in the slideway away from the motor and abuts against the slider 4. By adjusting the depth of the driving block 3 inserted into the slideway, the position of the slider 4 in the slideway is controlled and fixed, so as to maintain the synchronous belt tension. When the synchronous belt tension is adjusted to the specified value, the driving pulley is fixed to complete the adjustment of the tension force.

[0034] Optionally, the matching part of the housing is inserted into the driven pulley and is in clearance fit with the driven pulley.

[0035] The slideway is a circumferentially closed concave cavity, and the slider is in clearance fit with the inner wall of the concave cavity of the slideway.

[0036] A first waist-shaped hole for a slider limit screw to pass through is formed on the slider. One end of the slider limit screw passes through the first waist-shaped hole and is connected and fixed with the housing, so that the slider is in sliding fit with the slideway through the first waist-shaped hole.

[0037] A screw hole for a driving screw to pass through is opened on the driving block. One end of the driving screw passes through the driving block and is connected with the housing. The driving block abuts against the slideway, and the driving block moves along the slideway by rotating the driving screw.

[0038] Adjust the spatial stroke of the driving block in the positive direction to increase the acting force between the driving end of the slider and the motor, and increase the tension of the synchronous belt sleeved outside the driving pulley and the driven pulley; or, adjust the spatial stroke of the driving block in the reverse direction to reduce the acting force between the driving end of the slider and the motor, thereby adjusting and reducing the tension of the synchronous belt sleeved outside the driving pulley and the driven pulley.

[0039] Specifically, in this embodiment, a first waist-shaped hole 8 for a slider limit screw 5 to pass through is formed on the slider 4. The slider limit screw 5 passes through the first waist-shaped hole and is connected and fixed with the housing 1. By providing the first waist-shaped hole 8, the slider 4 has freedom in the left and right directions in the housing 1.

[0040] In this embodiment, a screw hole 9 for the driving screw 2 to pass through is formed on the driving block 3. One end of the driving screw 2 passes through the driving block 3 and is fixed to the housing 1, so as to adjust and position the depth of the driving block 3 inserted into the slideway by means of the cooperation between the driving screw 2 and the housing 1.

[0041] Further, a first groove 10 for installing the pressure sensor 6 is formed at the left end of the slider 4 in this embodiment, so that when the slider moves to the left, the pressure sensor in the first groove abuts against the motor for pressure measurement; preferably, the pressure sensor is communicatively connected to a pressure display, and the pressure between the slider 4 and the motor is displayed through the pressure display, so as to more accurately adjust and control the tension of the synchronous belt, fix the positions of the driving wheel and the driven wheel, and then remove the adjusting device.

[0042] In a specific embodiment, referring to the attached Figures 2 - 3 , the slideway is square, the driving block 3 is an inclined wedge-shaped driving block, and a first inclined surface 11 matching the inclined wedge-shaped driving block is arranged on the right side of the slider 4 to form an inclined wedge-shaped slider. The inclined wedge-shaped driving block and the slider are arranged in the square slideway through the sliding fit of the first inclined surface and the sliding inclined surface of the inclined wedge-shaped driving block. By adjusting the driving screw 2, the depth of the inclined wedge-shaped driving block inserted into the slideway is driven, so that the slider 4 moves to the left under the limiting action of the slideway limiting screw 5 in the slideway, and the pressure sensor 6 at the left end of the slider 4 abuts against the motor, and the tension of the synchronous belt is adjusted.

[0043] The inclined wedge-shaped slider 4 is limited in the housing 1 by using the housing 1 and the slideway limiting screw 5, so that it only retains the freedom degree in the horizontal direction. The inclined wedge-shaped driving block 3 is limited by using the housing 1 and the driving screw 2, so that it only retains the freedom degree in the vertical direction. The pressure sensor 6 is installed at the front end of the inclined wedge-shaped slider 4 and connected to the pressure display. When in use, the housing 1 is matched with the driven wheel, and by rotating the driving screw 2, the inclined wedge-shaped driving block 4 can be driven to move in the horizontal direction. Subsequently, the pressure sensor pushes the driving wheel to translate and displays the current pressure. By adjusting the pressure received by the pressure sensor, the current tension of the synchronous belt can be adjusted.

[0044] It should be noted that the installation operation process of the adjusting device in this embodiment is as follows:

[0045] (1). First, place the inclined wedge-shaped slider 4 in the slideway of the housing 1.

[0046] (2). Then, pass the limiting screw 5 through the inclined wedge-shaped slider 4 and tighten it on the housing. A certain gap is reserved between the limiting screw 5 and the inclined wedge-shaped slider 4 to ensure that the inclined wedge-shaped slider 4 can slide left and right in the slideway of the housing 1, as shown in Figure 2 .

[0047] (3). And pass the driving screw 2 through the inclined wedge-shaped driving block and tighten it on the housing 1, as shown inFigure 3 。

[0048] (4), Install the pressure sensor 6 at the left end of the slider, as shown in Figure 4 。

[0049] (5), Rotate the driving screw 2 by using a wrench to drive the inclined wedge driving block 3 to move downward. The driving block 3 squeezes the slider to drive the inclined wedge slider 4 to move leftward, increasing the synchronous pulley spacing and the synchronous belt tension, and feeding back the current pressure value through the pressure sensor, as shown in Figure 5 ; During the operation of adjusting the tension, the motor is in a loose state, the driven pulley is in a fixed state, and the adjusting device is fixedly fitted with the hollow part of the driven pulley. At this moment, the distance between the driving pulley and the driven pulley is appropriate. Then fix the positions of the driving pulley and the driven pulley, and then remove the adjusting device.

[0050] Embodiment 2:

[0051] In another specific embodiment, referring to the attached Figures 6 - 7 , By changing the mating angle of the driving block, the input force in different directions can be changed to meet the requirements of different actual occasions. The difference from Embodiment 1 is that a slideway inclined surface 12 matching with the driving block 3 is provided on the right side of the slideway. The driving screw 2 passes through the driving block 3 in parallel with the slideway inclined surface and is connected to the housing; and the left side of the driving block 3 is in vertical contact with the right side of the slider 4. Of course, the left side of the driving block 3 only needs to be in contact with the right side of the slider 4, and it can also be matched through other non-vertical inclined surfaces. In this regard, the present invention makes no limitation; to realize adjusting the left and right positions of the slider 4 by the depth of the driving block 3 inserted into the slideway.

[0052] Embodiment 3:

[0053] In yet another specific embodiment, referring to the attached Figures 8 - 9 , By adding an additional slider 7 and setting an additional slider inclined surface 13 at a certain angle, output forces in different directions can be realized to meet the requirements of different actual occasions. On the basis of Embodiment 1 or Embodiment 2, the first groove for directly installing the pressure sensor 6 is not provided at the left end of the slider 4, but a second inclined surface 14 is provided to cooperate with the additional slider inclined surface, so as to realize the up and down movement control of the additional slider 7 by the left and right movement of the slider 4.

[0054] Specifically, an additional slider 7 is slidably connected to the left end of the slider 4. The pressure sensor 6 is installed through the additional slider to detect the tension of the synchronous belt through the pressure sensor. The driving block 3 is matched with the slider 4 to adjust the left and right positions of the slider 4 by adjusting the depth of the driving block 3 inserted into the slideway, thereby controlling the height of the additional slider. An additional slider inclined surface is formed on the lower right side of the additional slider 7 to cooperate with the slider 4. An additional screw hole for the additional slider screw 15 to pass through is formed on the left side of the housing. The additional slider screw passes through the left side of the housing and is matched with the second waist-shaped hole 16 of the additional slider 7, so that the additional slider 7 can move up and down under the action of the additional slider screw. A groove for installing the pressure sensor 6 is formed at the upper end of the additional slider 7. The lower end of the additional slider 7 is fixed, and the upper end abuts against the motor, so as to realize the adjustment of the synchronous belt tension.

[0055] In this embodiment, when there is an obstacle near the synchronous pulley and the operation in a certain direction may be restricted, the directions of the output and input forces of the adjusting device can be changed. This is mainly considered due to the influence of the operation space. Refer to the appendix Figure 10 Connect one end of the housing to the driven pulley. At this time, the rear side of the housing can be arranged inside the driven pulley. Of course, other devices can also be used to assist in arranging it inside the driven pulley to support the lower side of the housing. Similarly, the adjusting device can also be supported in other forms, which is not limited here. Press the pressure sensor against the motor, and use a wrench to rotate the driving screw to drive the driving block to move downward. The driving block squeezes the slider to drive the slider to move leftward, thereby driving the additional slider to move upward, increasing the distance between the synchronous pulleys and increasing the synchronous belt tension. The current pressure value is fed back through the pressure sensor, indicating that the distance between the driving pulley and the driven pulley is appropriate at this moment. Then fix the positions of the driving pulley and the driven pulley, and then remove the adjusting device.

[0056] Although the present invention has been described herein with reference to its illustrative embodiments, the above embodiments are only the preferred embodiments of the present invention. The embodiments of the present invention are not limited by the above embodiments. It should be understood that those skilled in the art can design many other modifications and embodiments, and these modifications and embodiments will fall within the scope and spirit of the principles disclosed in this application.

Claims

1. A synchronous belt tension adjustment device, characterized in that: The invention comprises: a shell, a slideway in which a driving block and a slider are arranged, and a matching part matching with a driven wheel are formed in the shell; the slider is embedded in the slideway and slidably connected with the slideway; the driving block is arranged in the slideway away from the motor connected with the driving wheel and the depth of insertion into the shell is adjustable, the driving block and the second end of the slider are abutted against each other, and the relative position of the slider and the slideway is adjusted by adjusting the depth of the driving block inserted into the shell, so that the first end of the slider slides out of the shell under the action of the driving block and abuts against the motor, thereby adjusting the tension of the synchronous belt sleeved on the driving wheel and the driven wheel.

2. A synchronous belt tension adjustment device according to claim 1, characterized in that: The matching portion of the shell is inserted into the driven wheel and is gap matched with the driven wheel.

3. A synchronous belt tension adjustment device according to claim 1, characterized in that: The slideway is a circumferentially closed concave cavity, and the sliding block is gap-matched with the inner wall of the slideway concave cavity.

4. A synchronous belt tension adjustment device according to claim 1, characterized in that: The slider is formed with a first waist-shaped hole for the slider limit screw to pass through. One end of the slider limit screw passes through the first waist-shaped hole and is connected and fixed to the shell. The slider and the slideway are slidably matched through the first waist-shaped hole.

5. A synchronous belt tension adjustment device according to claim 1, characterized in that: The driving block is provided with a screw hole for the driving screw to pass through. One end of the driving screw passes through the driving block and is connected to the housing. The driving block abuts against the slideway, and the driving block moves along the slideway by rotating the driving screw.

6. A synchronous belt tension adjustment device according to claim 1, characterized in that: The second end of the slider is provided with a first inclined surface matched with the driving block.

7. A synchronous belt tension adjustment device according to claim 1, characterized in that: A slideway inclined surface matched with the driving block is arranged in the slideway, and the driving screw is arranged parallel to the slideway inclined surface.

8. A synchronous belt tension adjustment device according to any one of claims 1 to 7, characterized in that: An additional slider is arranged at one end of the slider away from the driving block, and the additional slider cooperates with the motor.

9. A synchronous belt tension adjustment device according to claim 8, characterized in that: The additional sliding block is slidably arranged in the slideway, and the additional sliding block is provided with an additional sliding block inclined surface which matches with the sliding block.

10. A synchronous belt tension adjustment device according to claim 8, characterized in that: The additional slider is formed with a second waist-shaped hole matched with the additional slider screw, one end of the additional slider screw passes through the housing and matches with the second waist-shaped hole, so that the additional slider has the freedom to move along the slideway through the second waist-shaped hole; The regulating device is provided with a pressure sensor which is in contact with and matched with the motor, and the pressure sensor is arranged on the slider or the additional slider.

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