Synchronous belt pre-tightening structure

Abstract

The utility model discloses a synchronous belt pre-tightening structure which comprises a working table, a second motor installation frame is fixedly installed on the left side of the front end of the working table, a second motor is fixedly installed on the second motor installation frame, and a two-way lead screw is fixedly connected to a power output shaft of the second motor. And a group of sliding blocks are movably mounted at threads at the two ends of the bidirectional lead screw respectively. By starting the second motor, the second motor drives the two-way lead screw to rotate, the positions of the two sets of sliding blocks are adjusted, the sliding blocks can drive the two sets of tensioning wheels to move outwards at the same time, a synchronous belt can be easily installed at the moment, then the second motor is started again, the two sets of tensioning wheels move inwards at the same time, and the synchronous belt is installed. The synchronous belt tensioning device is simple and convenient to operate, and during installation, if the synchronous belt deviates, the front and back positions of the tensioning wheels are finely adjusted through the telescopic devices, so that the front and back positions of the synchronous belt are finely adjusted, and the synchronous belt can run in parallel.

Description

Technical Field

[0001] The utility model relates to the technical field of synchronous belts, in particular to a synchronous belt pre-tightening structure. Background Art

[0002] In the prior art, screws are often provided on the side of the synchronous belt, and the synchronous belt is pre-tightened by pressing the screws against the synchronous belt. Therefore, the prior art solves the problem of the synchronous belt being too loose or too tight by adjusting the length of the screws. In the above method, on the one hand, there is a length adjustment error of the screw, which cannot be quantified, and it is difficult to ensure the consistency of mass production; on the other hand, the screw will become loose after long-term use. In addition, the synchronous belt has the problem of aging and lengthening, which further leads to the limitations of this adjustment method. Utility Model Content

[0003] In order to overcome the above-mentioned defects existing in the prior art, the utility model provides a synchronous belt pre-tightening structure.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a synchronous belt pre-tensioning structure, including a workbench, a second motor mounting frame is fixedly installed on the left side of the front end of the workbench, a second motor is fixedly installed on the second motor mounting frame, a bidirectional lead screw is fixedly connected to the power output shaft of the second motor, a group of sliders are movably installed at the threads at both ends of the bidirectional lead screw, a movable connecting block is movably installed at the upper end of the slider, and a tensioning wheel is movably installed at the upper end of the movable connecting block.

[0005] Furthermore, a first motor mounting frame is fixedly installed on the rear bottom of the workbench, a first motor is fixedly installed on the first motor mounting frame, a first rotating shaft is fixedly connected to the first motor power output shaft, a driving wheel is fixedly installed on the front end of the first rotating shaft, and the driving wheel is located at the front end of the workbench.

[0006] Furthermore, a second rotating shaft is movably installed at the upper left and upper right positions of the front end of the workbench, and a driven wheel is fixedly installed on the second rotating shaft. A synchronous belt is tensioned and installed between the two groups of driven wheels, two groups of tensioning wheels and the driving wheel.

[0007] Furthermore, a slide rail is fixedly installed at the front end of the workbench, and two groups of sliding blocks are slidably installed on the slide rail.

[0008] Furthermore, a telescopic device is fixedly installed on the front side of the upper end of the sliding block, and a movable connecting block is fixedly installed on the telescopic end of the telescopic device.

[0009] Furthermore, a support frame is fixedly mounted on the upper end of the movable connection block, a third rotating shaft is movably mounted on the upper end of the support frame, and a tensioning wheel is fixedly mounted on the third rotating shaft.

[0010] Furthermore, a matching groove is provided on the outer side of the tensioning wheel, and the matching groove is installed in cooperation with the synchronous belt.

[0011] The beneficial effect of the utility model is that by starting the second motor, the second motor drives the bidirectional lead screw to rotate, so as to adjust the positions of the two sets of sliders, so that the sliders can drive the two sets of tensioning wheels to move outward at the same time, and the synchronous belt can be easily installed at this time, and then the second motor is started again, so that the two sets of tensioning wheels move inward at the same time, so that the two sets of tensioning wheels can complete the tensioning of the synchronous belt, and the operation is simple and convenient. During installation, if the synchronous belt is offset, the front and rear positions of the tensioning wheels are fine-tuned through the telescopic device to achieve fine-tuning of the front and rear positions of the synchronous belt, so that the synchronous belt can operate in parallel. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0013] Figure 1 It is the front view of the utility model;

[0014] Figure 2 It is a side view of the utility model;

[0015] Figure 3 It is a schematic diagram of the tensioning wheel of the utility model.

[0016] In the figure: 1. workbench, 2. first motor mounting bracket, 3. first motor, 4. first rotating shaft, 5. driving wheel, 6. synchronous belt, 7. second rotating shaft, 8. driven wheel, 9. slide rail, 10. slider, 11. second motor mounting bracket, 12. second motor, 13. bidirectional lead screw, 14. movable connecting block, 15. support frame, 16. third rotating shaft, 17. tensioning wheel, 171. matching groove, 18. telescopic device. DETAILED DESCRIPTION

[0017] In order to more clearly illustrate the technical solution of the utility model, the utility model is further described below in conjunction with the accompanying drawings. Obviously, the accompanying drawings described below are only one embodiment of the utility model. For ordinary technicians in this field, without paying any creative work, other embodiments can be obtained based on this drawing and embodiment, which all belong to the protection scope of the utility model.

[0018] like Figure 1 and Figure 2As shown, the utility model includes a workbench 1, a first motor mounting frame 2 is welded and installed on the rear bottom of the workbench 1, a first motor 3 is fixedly installed on the first motor mounting frame 2 by bolts, the first motor 3 is fixedly connected to a first rotating shaft 4 at the power output shaft, a driving wheel 5 is fixedly installed at the front end of the first rotating shaft 4, and the driving wheel 5 is located at the front end of the workbench 1, and a group of second rotating shafts 7 are movably installed at the upper left and upper right positions of the front end of the workbench 1 through bearings, and a driven wheel 8 is fixedly installed on the second rotating shaft 7.

[0019] like Figure 1 and Figure 2 As shown, a second motor mounting frame 11 is welded and installed on the left side of the front end of the workbench 1, and a second motor 12 is fixedly installed on the second motor mounting frame 11 by bolts. A bidirectional lead screw 13 is fixedly connected to the power output shaft of the second motor 12, and a group of sliders 10 are movably installed at the threads at both ends of the bidirectional lead screw 13. A slide rail 9 is fixedly installed on the front end of the workbench 1, and two groups of sliders 10 are slidably installed on the slide rail 9. A movable connecting block 14 is movably installed front and back at the upper end of the slider 10, and a support frame 15 is fixedly installed on the upper end of the movable connecting block 14. A third rotating shaft 16 is movably installed on the upper end of the support frame 15, and a tensioning wheel 17 is fixedly installed on the third rotating shaft 16.

[0020] like Figure 1 As shown, the synchronous belt 6 is tensioned and installed between the two groups of driven wheels 8, the two groups of tensioning wheels 17 and the driving wheel 5.

[0021] like Figure 2 As shown, a telescopic device 18 is fixedly installed on the front side of the upper end of the slider 10 , and a movable connecting block 14 is fixedly installed on the telescopic end of the telescopic device 18 , and the front and rear positions of the movable connecting block 14 are adjusted by the telescopic device 18 .

[0022] like Figure 3 As shown, a matching groove 171 is provided on the outer side of the tensioning wheel 17 , and the matching groove 171 is installed in cooperation with the synchronous belt 6 .

[0023] When the utility model is in use, by starting the second motor 12, the second motor 12 drives the bidirectional lead screw 13 to rotate, so as to adjust the positions of the two sets of sliders 10, so that the sliders 10 can drive the two sets of tensioning wheels 17 to move outward at the same time. At this time, the synchronous belt 6 can be easily installed, and then the second motor 12 is started again, so that the two sets of tensioning wheels 17 move inward at the same time, so that the two sets of tensioning wheels 17 can complete the tensioning of the synchronous belt 6. The operation is simple and convenient, and during installation, if the synchronous belt 6 is offset, the front and rear positions of the tensioning wheels 17 are fine-tuned by the telescopic device 18, so as to fine-tune the front and rear positions of the synchronous belt 6, so that the synchronous belt 6 can operate in parallel.

[0024] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. A synchronous belt pre-tightening structure, comprising a workbench (1), characterized in that: A second motor mounting frame (11) is fixedly mounted on the left side of the front end of the workbench (1), a second motor (12) is fixedly mounted on the second motor mounting frame (11), a bidirectional lead screw (13) is fixedly connected to the power output shaft of the second motor (12), a group of sliders (10) are movably mounted at the threads at both ends of the bidirectional lead screw (13), a movable connecting block (14) is movably mounted on the upper end of the slider (10), and a tensioning wheel (17) is movably mounted on the upper end of the movable connecting block (14).

2. A synchronous belt pre-tightening structure according to claim 1, characterized in that: A first motor mounting frame (2) is fixedly mounted on the rear bottom of the workbench (1); a first motor (3) is fixedly mounted on the first motor mounting frame (2); a first rotating shaft (4) is fixedly connected to the power output shaft of the first motor (3); a driving wheel (5) is fixedly mounted on the front end of the first rotating shaft (4); and the driving wheel (5) is located at the front end of the workbench (1).

3. A synchronous belt pre-tightening structure according to claim 2, characterized in that: A set of second rotating shafts (7) are movably mounted at the upper left and upper right positions of the front end of the workbench (1), and a driven wheel (8) is fixedly mounted on the second rotating shaft (7). A synchronous belt (6) is tensioned and mounted between the two sets of driven wheels (8), two sets of tensioning wheels (17) and the driving wheel (5).

4. A synchronous belt pre-tightening structure according to claim 1, characterized in that: A slide rail (9) is fixedly mounted on the front end of the workbench (1), and two groups of sliding blocks (10) are slidably mounted on the slide rail (9).

5. A synchronous belt pre-tightening structure according to claim 4, characterized in that: A telescopic device (18) is fixedly mounted on the front side of the upper end of the sliding block (10), and a movable connecting block (14) is fixedly mounted on the telescopic end of the telescopic device (18).

6. A synchronous belt pre-tightening structure according to claim 5, characterized in that: A support frame (15) is fixedly mounted on the upper end of the movable connection block (14), a third rotating shaft (16) is movably mounted on the upper end of the support frame (15), and a tensioning wheel (17) is fixedly mounted on the third rotating shaft (16).

7. A synchronous belt pre-tightening structure according to claim 2 or 6, characterized in that: A matching groove (171) is provided on the outer side of the tension wheel (17), and the matching groove (171) is matched and installed with the synchronous belt (6).

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