Rope wheel type lifter test bed

Abstract

The invention belongs to the technical field of test devices, and provides a rope wheel type lifter test bench which comprises a workbench, an adjusting assembly is arranged on the side surface of the workbench, and a tensioning mechanism is arranged on the outer surface of the adjusting assembly. A limiting assembly is fixedly installed on the outer surface of the workbench and located on the side face of the adjusting assembly. The tensioning mechanism comprises a third motor, a connecting base of the third motor is fixedly installed on the outer surface of the adjusting assembly, a motor shaft of the third motor is fixedly connected with one end of a fixing rod, and a tensioning wheel is arranged at the other end of the fixing rod. Through the arrangement of the tensioning mechanism, the rotation angle of the third motor can be controlled according to test requirements, so that the position of the tensioning wheel is adjusted, accurate adjustment of the tension of the rope wheel is achieved, when the working states of the automobile glass lifter under different loads are simulated, the position of the tensioning wheel can be correspondingly adjusted, the tension of the rope conforms to the actual working condition, and the test efficiency is improved. And the accuracy and reliability of a test result are ensured.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of test devices, and particularly relates to a rope wheel type lifter test bench. BACKGROUND

[0002] As a key component of the automobile door and window system, the performance of the automobile glass lifter is directly related to the use experience and driving safety of the driver and passengers. During daily driving, the vehicle owner frequently operates the glass lifting, such as opening the window for ventilation when there is traffic congestion and opening and closing the window when paying at a toll station. The rope wheel system of the automobile glass lifter is in a high-frequency use state for a long time, and also faces complex and changeable use environments. The tension of the rope wheel is crucial to the performance of the glass lifter. In actual use, the appropriate tension between the rope and the rope wheel during glass lifting needs to be maintained to ensure the stable lifting of the glass and avoid conditions such as jamming, shaking and even rope disengagement.

[0003] At present, the test bench is difficult to accurately adjust the tension of the rope wheel when simulating the glass lifting process, which leads to extremely unstable test results and cannot truly reflect the performance of the glass lifter under actual working conditions. In the test of the automobile glass lifter, if the tension of the rope wheel is too large, the glass lifting speed is too fast, which may cause the motor load to be too large, and the test result shows that the motor overheating protection starts in advance. However, in actual use, this problem will not occur under normal tension. If the tension is too small, the glass will shake obviously during lifting, and the test result determines that the glass lifter has poor stability. However, this is not a design defect of the product itself, but caused by improper tension adjustment during testing. When simulating the glass lifting process, it is difficult to accurately adjust the tension of the rope wheel, which leads to extremely unstable test results.

[0004] Therefore, a test bench capable of adjusting the tension of the rope wheel is needed to improve the accuracy of the test. SUMMARY

[0005] In view of the above problems, the present application provides a rope wheel type lifter test bench, which comprises a workbench, the side surface of the workbench is provided with an adjusting assembly, and the outer surface of the adjusting assembly is provided with a tensioning mechanism; a limiting assembly is fixedly installed on the outer surface of the workbench, and the limiting assembly is located on the side of the adjusting assembly. The tensioning mechanism comprises a third motor, a connecting seat of the third motor is fixedly installed on the outer surface of the adjusting assembly, a motor shaft of the third motor is fixedly connected with one end of a fixed rod, and the other end of the fixed rod is provided with a tensioning wheel.

[0006] Further, a screw rod is threadedly connected in a threaded hole in the fixed rod, a second mounting bracket is installed at the end of the screw rod away from the third motor, and the tensioning wheel is rotatably installed in the second mounting bracket.

[0007] Further, the fixed rod is provided with a limiting groove at the end far from the third motor, a connecting block is slidingly installed in the limiting groove, one end of the connecting block is rotatably connected with the screw rod, and the other end of the connecting block is fixedly connected with the second mounting frame.

[0008] Further, the adjusting assembly comprises a shell, the shell is fixedly installed on the outer surface of the workbench, a second motor is fixedly installed on the inner surface of the shell, and the motor shaft of the second motor is fixedly connected with a gear; the symmetrical two sides of the gear are respectively engaged with two toothed plates, the connecting rod is provided at one end of the toothed plate, the connecting rod passes through the hole on the shell and is connected with the lifter positioning frame, and the lifter positioning frame is slidingly installed on the outer surface of the workbench.

[0009] Further, the shell is provided with a sliding rod, and the toothed plate is slidingly installed on the sliding rod.

[0010] Further, the limiting assembly comprises a first mounting frame and a sliding table, the first mounting frame is fixedly installed on the outer surface of the workbench, the first mounting frame is a U-shaped plate, a lead screw is rotatably installed between the opposite two ends of the first mounting frame, a first motor is fixedly installed on the lower surface of the first mounting frame, the motor shaft of the first motor is fixedly connected with the end portion of the lead screw, and the sliding table is threadedly installed on the lead screw and slidingly installed in the first mounting frame.

[0011] Further, the inner surface of the first mounting frame is provided with a sliding rail, the surface of the sliding rail is provided with a movable groove, and the sliding table is slidingly installed in the movable groove.

[0012] Further, an electric push rod is fixedly installed on the surface of the sliding table, the piston rod of the electric push rod is fixedly connected with a connecting plate, and a positioning column is arranged at the end of the connecting plate far from the electric push rod.

[0013] Further, the positioning column has two, and the two positioning columns are fixedly installed on the side of the connecting plate far from the electric push rod.

[0014] Further, the workbench comprises a fixed frame, a mounting plate, a positioning plate and a base, the upper surface of the base is provided with the fixed frame, the side surface of the fixed frame is provided with the mounting plate, the outer surface of the mounting plate is provided with the positioning plate at the center position, the adjusting assembly is fixedly installed on the outer surface of the positioning plate, the limiting assembly is fixedly installed on the outer surface of the mounting plate, and the two limiting assemblies are respectively located on the two sides of the positioning plate.

[0015] Beneficial effects: 1. The present application can control the rotation angle of the third motor according to the test requirements through the setting of the tensioning mechanism, thereby adjusting the position of the tensioning wheel, realizing the precise adjustment of the rope wheel tension, and when simulating the working state of the automobile glass lifter under different loads, the position of the tensioning wheel can be adjusted accordingly, so that the rope tension meets the actual working condition, ensuring the accuracy and reliability of the test results.

[0016] 2. The present application is provided with an adjusting assembly, the second motor of the adjusting assembly is started to drive the gear to rotate, the gear drives the toothed plate and the connecting rod connected therewith to move, so that the two lifter positioning frames can move towards each other or move away from each other in the sliding groove to adjust the position, and in the production and detection process of the automobile glass lifter, different batches and different models of products need to be tested; the adjusting assembly can quickly and accurately position and install the automobile glass lifter, greatly improving the efficiency of test preparation work.

[0017] 3. The present application comprises two positioning columns, both of which are fixedly installed on the side of the connecting plate away from the electric push rod, the positioning columns can be flexibly adjusted according to the position of the mounting hole of the automobile glass lifter of different specifications, ensuring that the automobile glass lifter can be accurately positioned and fixed, and adapting to the test requirements of various models of glass lifters. In the production and detection process of the automobile glass lifter, different batches and different models of products need to be tested, and the automobile glass lifter can be quickly and accurately positioned and installed, greatly improving the efficiency of test preparation work.

[0018] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent to those skilled in the art from the description, or can be learned by practice of the present application. The objects and other advantages of the present application can be realized and obtained by the structure indicated in the specification and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0020] Figure 1 The overall schematic diagram of the wheel type lifter test bench in the embodiment of the present application is shown.

[0021] Figure 2 The schematic diagram of the adjusting assembly and the workbench installation position of the wheel type lifter test bench in the embodiment of the present application is shown.

[0022] Figure 3 As shown in the internal structure schematic view of the shell of the wheel type lifter test bench in the embodiment of the present application.

[0023] Figure 4 As shown in the structure schematic view of the limiting assembly of the wheel type lifter test bench in the embodiment of the present application.

[0024] Figure 5 As shown in the structure schematic view of the tensioning mechanism of the wheel type lifter test bench in the embodiment of the present application.

[0025] In the figure, 1, workbench; 101, fixed frame; 102, mounting plate; 103, positioning plate; 104, base; 4, limiting assembly; 401, first mounting frame; 402, slide rail; 403, slide table; 404, first motor; 405, lead screw; 406, electric push rod; 407, connecting plate; 408, positioning column; 6, adjusting assembly; 601, sliding groove; 602, lifter positioning frame; 603, shell; 604, second motor; 605, gear; 606, toothed plate; 607, connecting rod; 7, tensioning mechanism; 701, third motor; 702, fixed rod; 703, screw rod; 704, connecting block; 705, second mounting frame; 706, tensioning wheel; 8, slide rod; 9, movable groove; 10, fixed block; 11, limiting groove. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0027] Reference Figure 1 A rope wheel type lifter test bench, comprising a workbench 1, the side surface of the workbench 1 is provided with an adjusting assembly 6, the outer surface of the adjusting assembly 6 is provided with a tensioning mechanism 7; the outer surface of the workbench 1 is fixedly installed with two limiting assemblies 4, and the two limiting assemblies 4 are respectively located on the left and right sides of the adjusting assembly 6.

[0028] Reference Figure 5The tensioning mechanism 7 comprises a third motor 701, a connecting seat of the third motor 701 is fixedly installed on the outer surface of the adjusting assembly 6, a motor shaft of the third motor 701 is fixedly connected with one end of a fixed rod 702, and the other end of the fixed rod 702 is provided with a tensioning wheel 706. The third motor 701 drives the fixed rod 702 and then drives the tensioning wheel 706 to tighten the rope, thereby solving the problem that the test bench in the prior art does not have the performance test of the rope under different tensioning degrees.

[0029] According to the test requirement, the rotation angle of the third motor 701 can be controlled, the position of the tensioning wheel 706 is adjusted, the precise adjustment of the rope tension is realized, when the working state of the automobile glass lifter under different loads is simulated, the position of the tensioning wheel 706 is adjusted correspondingly, the rope tension meets the actual working condition, the accuracy and reliability of the test result are ensured, compared with the traditional test bench, the tensioning mechanism 7 can quickly and accurately adjust the rope tension to the set value, and the test efficiency and quality are greatly improved.

[0030] Further, a threaded hole in the fixed rod 702 is threadedly connected with a screw rod 703, one end of the screw rod 703 away from the third motor 701 is provided with a second mounting bracket 705, and the tensioning wheel 706 is rotatably installed in a groove of the second mounting bracket 705. The threaded hole is arranged along the length direction of the fixed rod 702.

[0031] Reference Figure 5 One end of the connecting block 704 is rotatably connected with the screw rod 703, and the other end of the connecting block 704 is fixedly connected with the second mounting bracket 705. Specifically, the fixed rod 702 is provided with a limiting groove 11 on one side, and the connecting block 704 is slidably installed in the limiting groove 11. The connecting block 704 is limited by the limiting groove 11, and rotation of the connecting block 704 is prevented, so that the connecting block 704 can only slide in the limiting groove 11.

[0032] In the above embodiment, optionally another embodiment is that the tensioning mechanism 7 comprises a third motor 701, the outside of the third motor 701 is fixedly connected with the shell 603, the output end of the third motor 701 is fixedly connected with a fixed rod 702, the inner cavity of the fixed rod 702 is threadedly connected with a screw rod 703, one side of the screw rod 703 is movably connected with a connecting block 704 through a bearing, one side of the connecting block 704 is fixedly connected with a second mounting bracket 705, the side away from the fixed rod 702 of the second mounting bracket 705 is rotatably connected with a tensioning wheel 706 through a rotating shaft, and the tensioning mechanism 7 fundamentally solves the problem of unstable test results of the existing test bench. In the test of the automobile glass lifter, stable rope wheel tension can ensure that the glass remains stable during lifting, avoids the phenomenon of glass jamming and shaking caused by tension fluctuation, which makes the test process more stable and the test data more reliable.

[0033] Reference Figure 3 The adjusting assembly 6 comprises a shell 603 fixedly installed on the outer surface of the workbench 1, a second motor 604 fixedly installed on the inner surface of the shell 603, and a gear 605 fixedly connected with the motor shaft of the second motor 604. The symmetrical two sides of the gear 605 are respectively engaged with two toothed plates 606, one end of the toothed plate 606 is provided with a connecting rod 607, the connecting rod 607 passes through the hole on the shell 603 and is connected with the lifter positioning bracket 602, and the lifter positioning bracket 602 is slidably installed on the outer surface of the workbench 1 (for reference Figure 2 Specifically, a sliding groove 601 is arranged in the recess on the outer surface of the positioning plate 103, the lifter positioning bracket 602 is slidably installed in the sliding groove 601, the outer surface of the positioning plate 103 is fixedly connected with the shell 603, the inner cavity of the shell 603 is fixedly connected with the second motor 604, the output shaft of the second motor 604 is fixedly connected with the gear 605, the top and bottom of the gear 605 are engaged with the toothed plates 606, one side of the toothed plate 606 is fixedly connected with the connecting rod 607, and one side of the connecting rod 607 penetrates to the outside of the shell 603 and is fixedly connected with the lifter positioning bracket 602. Specifically, one side of the surface of the lifter positioning bracket 602 is fixedly connected with a fixed block 10, and one side of the fixed block 10 is fixedly connected with the connecting rod 607.

[0034] Further, a sliding rod 8 is arranged in the shell 603, and the toothed plate 606 is slidably installed on the sliding rod 8. Specifically, the inner cavity of the shell 603 is fixedly connected with the sliding rod 8, and the surface of the sliding rod 8 is slidably connected with the toothed plate 606. By arranging the sliding rod 8, the stable sliding installation of the toothed plate 606 in the shell 603 is further ensured. The toothed plate 606 and the sliding rod 8 adopt a sliding connection mode, the sliding rod 8 provides reliable lateral support and guidance for the toothed plate 606 when the toothed plate 606 moves, enhances the stability of the toothed plate 606, and effectively avoids the problems of shaking and deviation of the toothed plate 606 during movement.

[0035] Specifically, when the second motor 604 drives the gear 605 to rotate, the gear 605 drives the toothed plate 606 and the connecting rod 607 connected thereto to move, so that the two lifter positioning frames 602 can quickly move towards or away from each other in the sliding groove 601 to adjust the position. Since the installation positions and specifications of the automobile glass lifter in different vehicle models are different, this design gives flexibility to the height of the test bench, thereby adapting to the test needs of automobile glass lifters (the lifter is fixedly connected with the lifter positioning frame 602) of various specifications.

[0036] Reference Figure 4 The limiting assembly 4 comprises a first mounting frame 401 and a sliding table 403. The first mounting frame 401 is fixedly installed on the outer surface of the workbench 1. The first mounting frame 401 is a U-shaped plate. A lead screw 405 is rotatably installed between the opposite ends of the first mounting frame 401. A first motor 404 is fixedly installed on the lower surface of the first mounting frame 401. The motor shaft of the first motor 404 is fixedly connected with the end of the lead screw 405. The sliding table 403 is threadedly installed on the lead screw 405 and slidably installed in the first mounting frame 401. Specifically, the limiting assembly 4 comprises the first mounting frame 401. The outer surface of the first mounting frame 401 is fixedly connected with a sliding rail 402. The sliding table 403 is slidably installed on the sliding rail 402. The bottom of the first mounting frame 401 is fixedly connected with the first motor 404. The output end of the first motor 404 is fixedly connected with the lead screw 405. The lead screw 405 is threadedly connected with the sliding table 403. The top of the lead screw 405 is rotatably connected with the first mounting frame 401 through a bearing.

[0037] Further, the inner surface of the first mounting frame 401 is provided with the sliding rail 402. The surface of the sliding rail 402 is provided with a movable groove 9. The sliding table 403 is slidably installed in the movable groove 9. Specifically, the two sides of the sliding rail 402 are both provided with the movable groove 9. The two sides of the sliding table 403 are both fixedly connected with sliding blocks matched with the movable groove 9. The movable groove 9 is provided to limit the sliding table 403.

[0038] Reference Figure 4 The surface of the sliding table 403 is fixedly installed with an electric push rod 406. The piston rod of the electric push rod 406 is fixedly connected with a connecting plate 407. The end of the connecting plate 407 away from the electric push rod 406 is provided with a positioning column 408. Specifically, the outer surface of the sliding table 403 is fixedly connected with the electric push rod 406. The push rod of the electric push rod 406 is fixedly connected with the connecting plate 407. One side of the connecting plate 407 is fixedly connected with the positioning column 408. The positioning column 408 is provided to facilitate the fixing of the automobile glass lifter.

[0039] Furthermore, two positioning posts 408 are provided, each fixedly mounted on the side of the connecting plate 407 away from the electric push rod 406. Specifically, positioning posts 408 can be flexibly adjusted to the position of the mounting holes for different specifications of automotive window regulators, ensuring accurate positioning and securing, and adapting to the testing requirements of various models of window regulators. During the production and testing of automotive window regulators, different batches and models of products need to be tested. This ability to quickly and accurately position and install automotive window regulators greatly improves the efficiency of test preparation.

[0040] In the above embodiment, another optional implementation is that the first mounting frame 401 is equipped with a slide rail 402 and a slide table 403, and the output end of the first motor 404 is connected to the screw 405. When the first motor 404 starts to run, the screw 405 rotates accordingly. Since the screw 405 and the slide table 403 are threadedly connected, the slide table 403 can slide smoothly on the slide rail 402, and the electric push rod 406 drives the connecting plate 407 to move, and the connecting plate 407 drives the positioning column 408 to move. The slider of the lifter is clamped and fixed by the positioning column 408, so as to achieve the effect of rapid positioning test. The positioning column 408 can be flexibly adjusted according to the position of the mounting hole of automobile window lifters of different specifications to ensure that it can be accurately positioned and fixed to meet the testing requirements of various models of window lifters.

[0041] refer to Figure 1 The workbench 1 includes a fixed frame 101, a mounting plate 102, a positioning plate 103 and a base 104. The fixed frame 101 is provided on the upper surface of the base 104, the mounting plate 102 is provided on the side of the fixed frame 101, and the positioning plate 103 is provided at the center position of the outer surface of the mounting plate 102; the adjustment component 6 is fixedly installed on the outer surface of the positioning plate 103, and the limit component 4 is fixedly installed on the outer surface of the mounting plate 102, and the two limit components 4 are respectively located on the left and right sides of the positioning plate 103.

[0042] The working principle of the present invention is: by starting the second motor 604, the gear 605 connected to the second motor 604 rotates accordingly, and the two tooth plates 606 move toward or away from each other under the drive of the gear 605, the tooth plates 606 drive the connecting rod 607 to move, and the connecting rod 607 drives the lifter positioning frame 602 to move in the slide groove 601. Since the installation position and specifications of automobile window lifters in different models are different, this method can quickly and accurately adjust the position of the lifter positioning frame 602, making it convenient to install the lifter positioning frame 602 and different lifters.

[0043] The elevator to be tested is installed on the elevator positioning frame 602, the electric push rod 406 is started, the electric push rod 406 drives the connecting plate 407 to move, the connecting plate 407 drives the positioning column 408 to move, the positioning column 408 can be flexibly adjusted according to the mounting hole positions of different specifications of automobile glass elevators, the slide block of the elevator is clamped and fixed, the quick positioning of the elevator is realized, the first motor 404 is started to drive the lead screw 405 to rotate, since the lead screw 405 is in threaded connection with the slide table 403, the slide table 403 stably slides along the slide rail 402 fixed on the surface of the first mounting frame 401, the slide block of the elevator can be moved up and down, and the testing purpose is sequentially achieved.

[0044] The third motor 701 is started, the third motor 701 drives the fixed rod 702 to rotate, the position of the tension pulley 706 is adjusted, the screw rod 703 is rotated, the connecting block 704 is driven by the screw rod 703 to move in the limiting groove 11, the second mounting frame 705 and the tension pulley 706 on one side of the second mounting frame 705 are driven by the connecting block 704 to move, the tension degree of the tension pulley 706 is adjusted, the position of the tension pulley 706 can be accurately adjusted by controlling the rotation angle of the third motor 701, and the precise adjustment of the tension of the rope wheel is realized.

[0045] Although the present application is described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalents; and the modification or replacement does not make the essence of the corresponding technical solution deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A rope sheave lift test bench, characterized in that: The workbench (1) comprises a workbench (1), wherein an adjustment component (6) is provided on a side surface of the workbench (1), and a tensioning mechanism (7) is provided on an outer surface of the adjustment component (6); a limit component (4) is fixedly mounted on the outer surface of the workbench (1), and the limit component (4) is located on the side of the adjustment component (6); The tensioning mechanism (7) comprises a third motor (701), a connecting seat of the third motor (701) being fixedly mounted on the outer surface of the adjustment assembly (6), a motor shaft of the third motor (701) being fixedly connected to one end of a fixing rod (702), and a tensioning wheel (706) being provided at the other end of the fixing rod (702).

2. A rope pulley lift test bench according to claim 1, characterized in that: A screw rod (703) is threadedly connected to the threaded hole inside the fixing rod (702), a second mounting frame (705) is mounted on one end of the screw rod (703) away from the third motor (701), and the tensioning wheel (706) is rotatably mounted in the second mounting frame (705).

3. A rope pulley lift test bench according to claim 2, characterized in that: A limiting slot (11) is provided at one end of the fixing rod (702) away from the third motor (701), a connecting block (704) is slidably mounted in the limiting slot (11), one end of the connecting block (704) is rotationally connected to the screw rod (703), and the other end of the connecting block (704) is fixedly connected to the second mounting bracket (705).

4. A rope pulley lift test bench according to claim 1, characterized in that: The adjustment assembly (6) includes a housing (603), the housing (603) is fixedly mounted on the outer surface of the workbench (1), a second motor (604) is fixedly mounted on the inner surface of the housing (603), and the motor shaft of the second motor (604) is fixedly connected to the gear (605); the symmetrical sides of the gear (605) are respectively engaged with two tooth plates (606), and a connecting rod (607) is provided at one end of the tooth plate (606), and the connecting rod (607) passes through a hole on the housing (603) and is connected to the lifter positioning frame (602), and the lifter positioning frame (602) is slidably mounted on the outer surface of the workbench (1).

5. A rope pulley lift test bench according to claim 4, characterized in that: A slide rod (8) is provided in the housing (603), and the tooth plate (606) is slidably mounted on the slide rod (8).

6. A rope pulley lift test bench according to claim 1, characterized in that: The limiting assembly (4) includes a first mounting frame (401) and a slide (403), wherein the first mounting frame (401) is fixedly mounted on the outer surface of the workbench (1), the first mounting frame (401) is a U-shaped plate, a lead screw (405) is rotatably mounted between opposite ends of the first mounting frame (401), a first motor (404) is fixedly mounted on the lower surface of the first mounting frame (401), a motor shaft of the first motor (404) is fixedly connected to the end of the lead screw (405), the slide (403) is threadedly mounted on the lead screw (405), and the slide (403) is slidably mounted in the first mounting frame (401).

7. A rope pulley lift test bench according to claim 6, characterized in that: The inner surface of the first mounting frame (401) is provided with a slide rail (402), the surface of the slide rail (402) is provided with a movable groove (9), and the slide platform (403) is slidably installed in the movable groove (9).

8. A rope pulley lift test bench according to claim 6 or 7, characterized in that: An electric push rod (406) is fixedly mounted on the surface of the slide (403), a piston rod of the electric push rod (406) is fixedly connected to a connecting plate (407), and a positioning column (408) is provided at one end of the connecting plate (407) away from the electric push rod (406).

9. The rope pulley lift test bench according to claim 8, characterized in that: There are two positioning posts (408), and both positioning posts (408) are fixedly mounted on a side of the connecting plate (407) away from the electric push rod (406).

10. The rope pulley lift test bench according to claim 1, characterized in that: The workbench (1) comprises a fixing frame (101), a mounting plate (102), a positioning plate (103) and a base (104); the fixing frame (101) is provided on the upper surface of the base (104); the mounting plate (102) is provided on the side of the fixing frame (101); and the positioning plate (103) is provided at the center of the outer surface of the mounting plate (102); the adjusting component (6) is fixedly mounted on the outer surface of the positioning plate (103); the limiting component (4) is fixedly mounted on the outer surface of the mounting plate (102), and the two limiting components (4) are respectively located on both sides of the positioning plate (103).

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