Fixing device for withstand voltage test of locomotive roof electric appliance

Abstract

The utility model relates to the field of locomotive manufacturing, and discloses a fixing device for a withstand voltage test of locomotive roof electrical appliances, which comprises a base, the top of the base is fixedly connected with a box body, two sides of the top of the base are fixedly connected with connecting blocks, and the middle part of the inner wall of the box body is movably connected with a mounting plate; and the limiting mechanism comprises a supporting rod, the bottom end of the supporting rod is rotationally connected to the inner wall of the connecting block, the inner wall of the connecting block is rotationally connected with the supporting rod, and a servo motor is arranged at the bottom of the inner wall of the supporting rod. According to the utility model, after the mounting plate descends, the roof electric appliance at the top is stored in the box body, so that the damage to the roof electric appliance body caused by overlarge test pressure is avoided, and the property of the spring is that the smaller the compression length is, the larger the elastic force is, so that the equipment can test the roof electric appliance according to the test pressure. And the minimum acting force required by the descending of the mounting plate is adjusted, so that the equipment can be better matched with the test and the roof electric appliance body is effectively protected.

Description

Technical Field

[0001] The utility model relates to the technical field of locomotive manufacturing, in particular to a fixing device for a pressure withstand test of electrical appliances on a locomotive roof. Background Art

[0002] Locomotive manufacturing and locomotive repair companies need to conduct a withstand voltage test on the assembled electric locomotive roof electrical appliances. The test usually involves fixing the roof electrical appliances and then pressurizing them to determine whether they are qualified. In order to avoid the roof electrical appliances falling off during the test, a fixing device for the withstand voltage test of the locomotive roof electrical appliances is required. Therefore, the existing fixing device for the withstand voltage test of the locomotive roof electrical appliances has been continuously innovated and developed. Therefore, it can be seen that the current fixing device for the withstand voltage test of the locomotive roof electrical appliances basically meets people's needs, but there are still some problems.

[0003] Existing fixing devices for pressure resistance testing of locomotive roof electrical appliances usually use bolts to install the roof electrical appliances on a supportive platform, and then perform an extrusion test on the roof electrical appliances through an extrusion structure on the top.

[0004] However, when the current device is actually used, the squeezing force gradually increases. When it increases to a certain force, most of the force generated will be absorbed by the roof electrical appliance and the base at the bottom. In the long run, it will inevitably cause damage to the base, thereby affecting the service life of the base. Therefore, there is an urgent need for a fixing device for the pressure resistance test of locomotive roof electrical appliances to solve the above problem. Utility Model Content

[0005] The purpose of the present utility model is to provide a fixing device for a motorcycle roof electrical appliance withstand voltage test, so as to solve the problem proposed in the above background technology that the base and the roof electrical appliance absorb most of the force during the test, and the base used to fix the roof electrical appliance will inevitably be damaged in the long run.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution, which discloses a fixing device for a withstand voltage test of a locomotive roof electrical appliance, comprising a base, a box body being fixedly connected to the top of the base, connecting blocks being fixedly connected to both sides of the top of the base, and a mounting plate being movably connected to the middle portion of the inner wall of the box body;

[0007] The limiting mechanism includes a support rod, the bottom end of the support rod is rotatably connected to the inner wall of the connecting block, the inner wall of the connecting block is rotatably connected to the support rod, a servo motor is provided at the bottom of the inner wall of the support rod, the output end of the servo motor is fixedly connected to a threaded rod, the surface of the threaded rod is threadedly connected to a slider, both sides of the slider are rotatably connected to the connecting rod, the bottom end of the connecting rod is rotatably connected to a movable block, a telescopic rod is provided on one side of the movable block, the inner wall of the telescopic rod is movably connected to a return spring, and the surface of the movable block is slidably connected to the inner wall of the base, the top of one side of the support rod is fixedly connected to an arc block, and the top of the arc block overlaps both sides of the bottom of the mounting plate.

[0008] As an optimal technical solution of the present invention, the top of the mounting plate is fixedly connected to a C-shaped fixing plate, the inner wall of the C-shaped fixing plate is provided with a mounting groove, and the top of the C-shaped fixing plate is overlapped with the roof electrical appliance body.

[0009] As an optimal technical solution of the present invention, foot pads are fixedly connected to the four sides of the bottom of the base, a movable groove is opened in the middle of the top of the base, and the surfaces of the movable block and the telescopic rod are movably connected to the inner wall of the movable groove.

[0010] As a preferred technical solution of the present invention, sliding grooves are provided on both sides of the inner wall of the support rod, and the surface of the slider is slidably connected to the inner wall of the sliding groove.

[0011] As a preferred technical solution of the present invention, arc-shaped grooves are provided on the top and bottom of both sides of the mounting plate, and the contour of the arc-shaped grooves is consistent with the contour of the arc-shaped blocks.

[0012] As a preferred technical solution of the present invention, a hydraulic cylinder is fixedly connected to the bottom of the mounting plate, and the bottom end of the hydraulic cylinder is fixedly connected to the top of the base.

[0013] As a preferred technical solution of the present invention, one side of the top of the connecting block is fixedly connected to a limiting plate, and one side of the limiting plate is overlapped with the bottom end of one side of the supporting rod.

[0014] As a preferred technical solution of the present invention, a protection box is fixedly connected to the bottom of the inner wall of the support rod, and the servo motor is located on the inner wall of the protection box.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. The utility model uses a liftable mounting plate. When the roof electrical appliance body is subjected to an extrusion test, the roof electrical appliance body is squeezed and directs the force downward to the surface of the mounting plate. At this time, the downward force is greater than the elastic force of the return springs on both sides, and the two sides of the mounting plate are fitted with the arc block and lowered. During the lowering process, the arc block is pushed to move to both sides, thereby pushing the support rod to tilt. After the support rod tilts, the mounting plate on one side of the arc block is lowered. After the mounting plate is lowered, the top roof electrical appliance is stored in the box, thereby avoiding damage to the roof electrical appliance body and the fixed structure caused by excessive test pressure. Since the nature of the spring is that the smaller the compressed length, the greater the elastic force, the device can adjust the minimum force required for the mounting plate to lower according to the size of the test pressure, so that the equipment can better cooperate with the test and effectively protect the roof electrical appliance body.

[0017] 2. The utility model can support the bottom of the roof electrical appliance body through three groups of C-shaped fixing plates, and multiple groups of mounting slots are provided on the top of the C-shaped fixing plates. The multiple groups of mounting slots can be used to select the mounting slots according to the model of the roof electrical appliance body to fix the roof electrical appliance body, thereby improving the use range of the device for the roof electrical appliance body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural stereogram of the device of the utility model;

[0019] Figure 2 It is a three-dimensional diagram of the limiting mechanism of the utility model;

[0020] Figure 3 This is a top structural diagram of the mounting plate of the utility model;

[0021] Figure 4 This is a schematic diagram of the adjustment of the connecting rod of the utility model;

[0022] Figure 5 This is a structural breakdown diagram of the support rod of the utility model.

[0023] Figure 6 This is a diagram of the internal structure of the telescopic rod of the utility model.

[0024] In the figure: 1. Base; 2. Connecting block; 3. Support rod; 4. Servo motor; 5. Threaded rod; 6. Slider; 7. Connecting rod; 8. Movable block; 9. Telescopic rod; 10. Return spring; 11. Arc block; 12. Mounting plate; 13. Box body; 14. C-shaped fixing plate; 15. Mounting slot; 16. Roof electrical appliance body; 17. Foot pad; 18. Movable slot; 19. Slide; 20. Arc groove; 21. Hydraulic cylinder; 22. Limit plate; 23. Protective box. DETAILED DESCRIPTION

[0025] 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.

[0026] See also Figure 1 、 Figure 2 and Figure 6 A fixing device for a withstand voltage test of a locomotive roof electrical appliance comprises a base 1, a box 13 is fixedly connected to the top of the base 1, connecting blocks 2 are fixedly connected to both sides of the top of the base 1, and a mounting plate 12 is movably connected to the middle of the inner wall of the box 13;

[0027] The limiting mechanism includes a support rod 3, the bottom end of the support rod 3 is rotatably connected to the inner wall of the connecting block 2, the inner wall of the connecting block 2 is rotatably connected to the support rod 3, and a servo motor 4 is provided at the bottom of the inner wall of the support rod 3, the output end of the servo motor 4 is fixedly connected to a threaded rod 5, the surface of the threaded rod 5 is threadedly connected to a slider 6, both sides of the slider 6 are rotatably connected to a connecting rod 7, the bottom end of the connecting rod 7 is rotatably connected to a movable block 8, a telescopic rod 9 is provided on one side of the movable block 8, the inner wall of the telescopic rod 9 is movably connected to a reset spring 10, and the surface of the movable block 8 is slidably connected to the inner wall of the base 1, the top of one side of the support rod 3 is fixedly connected to an arc block 11, and the top of the arc block 11 overlaps the two sides of the bottom of the mounting plate 12.

[0028] When the cam 16 is lowered, the cam 16 is lowered to the bottom of the cam 12. When the cam 16 is lowered, the cam 16 is lowered to the bottom of the cam 12. When the cam 16 is lowered, the cam 16 is lowered to the bottom of the cam 12. When the cam 16 is lowered, the cam 16 is lowered to the bottom of the cam 12. After the applied force is greater than the clamping force of the support rod 3 and the elastic force of the return spring 10, the mounting plate 12 is fitted into the surface of the arc block 11 and descends to the bottom of the arc block 11, thereby collecting the mounting plate 12 and the top roof electrical appliance body 16 into the box body 13, thereby protecting the roof electrical appliance body 16. When it is necessary to adjust the minimum pressure required for the mounting plate 12 to descend, the servo motor 4 is first powered on, and the output end of the servo motor 4 drives the threaded rod 5 to rotate. The rotation of the threaded rod 5 then drives the surface slider 6 to descend. The descent of the slider 6 drives the connecting rod 7 to tilt, so that the bottom end of the connecting rod 7 drives the movable block 8 to move, so that the movable block 8 pushes the telescopic rod 9, causing the telescopic rod 9 to retract. The contraction of the telescopic rod 9 then squeezes and contracts the internal return spring 10. Since the shorter the return spring 10 is contracted, the greater its elastic force, which makes the applied force required for the mounting plate 12 to descend greater, thereby completing the adjustment of the pressure required for the mounting plate 12 to descend.

[0029] See also Figure 1 and Figure 3 The top of the mounting plate 12 is fixedly connected to a C-shaped fixing plate 14, the inner wall of the C-shaped fixing plate 14 is provided with a mounting groove 15, the top of the C-shaped fixing plate 14 is overlapped with the roof electrical appliance body 16, and the four sides of the bottom of the base 1 are fixedly connected to the foot pads 17. A movable groove 18 is provided in the middle of the top of the base 1, and the surfaces of the movable block 8 and the telescopic rod 9 are movably connected to the inner wall of the movable groove 18.

[0030] Before conducting the test, place the roof electrical appliance body 16 on the top of the C-shaped fixing plate 14, and then use bolts to install the bottom of the roof electrical appliance body 16 to the top of the C-shaped fixing plate 14 through the mounting groove 15, thereby completing the installation of the roof electrical appliance body 16. The foot pad 17 at the bottom of the base 1 can support the bottom of the base 1. The bottom of the foot pad 17 is made of rubber and can absorb some vibrations. The movable groove 18 can limit the moving trajectory of the movable block 8.

[0031] See also Figure 2 、 Figure 4 and Figure 5 , slide grooves 19 are opened on both sides of the inner wall of the support rod 3, and the surface of the slider 6 is slidably connected to the inner wall of the slide groove 19, and arc-shaped grooves 20 are opened on the top and bottom of both sides of the mounting plate 12, and the outline of the arc-shaped groove 20 is consistent with the outline of the arc block 11, and the bottom of the mounting plate 12 is fixedly connected to the hydraulic cylinder 21, and the bottom end of the hydraulic cylinder 21 is fixedly connected to the top of the base 1, one side of the top of the connecting block 2 is fixedly connected to the limiting plate 22, and one side of the limiting plate 22 is overlapped at the bottom end of one side of the support rod 3, and the bottom of the inner wall of the support rod 3 is fixedly connected to the protective box 23, and the servo motor 4 is located on the inner wall of the protective box 23.

[0032] The slider 6 can be raised and lowered in the slide groove 19, so that the slide groove 19 can limit the movement trajectory of the slider 6. The arc groove 20 fits the arc block 11. During the lifting and lowering of the mounting plate 12, the arc groove 20 can reduce the damage caused by the friction between the arc block 11 and the mounting plate 12. After the mounting plate 12 is squeezed into the box body 13, the hydraulic cylinder 21 can be used to drive the mounting plate 12 to rise, thereby pushing the mounting plate 12 and the top roof electrical appliance body 16 to the top of the box body 13.

[0033] Working principle: When using a fixing device for a motorcycle roof electrical pressure test, first install the roof electrical appliance body 16 to the top of the C-shaped fixing plate 14 by bolts, and then squeeze the top of the roof electrical appliance body 16 to perform the test. In the process of squeezing the roof electrical appliance body 16, the roof electrical appliance body 16 and the mounting plate 12 are squeezed and then lowered. In the process of the mounting plate 12 lowering, the arc block 11 is pushed to both sides. At this time, the reset spring 10 pushes the telescopic rod 9 to reset through its own elastic force, and the telescopic rod 9 pushes the movable block 8 to move. The movement in turn drives the connecting rod 7 to tilt, so that the connecting rod 7 supports one side of the support rod 3 through the slider 6, which makes the mounting plate 12 receive the clamping force generated by the relative movement of the support rods 3 and the arc block 11 on both sides during the descending process. When the force acting on the roof electrical body 16 and the mounting plate 12 is greater than the clamping force of the support rod 3 and the elastic force of the return spring 10, the mounting plate 12 fits the surface of the arc block 11 and descends to the bottom of the arc block 11, thereby putting the mounting plate 12 and the top roof electrical body 16 into the box body 13, thereby protecting the roof electrical body 16.

[0034] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A fixing device for a locomotive roof electrical appliance withstand voltage test, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to a box body (13), both sides of the top of the base (1) are fixedly connected to connection blocks (2), and the middle of the inner wall of the box body (13) is movably connected to a mounting plate (12); The limiting mechanism comprises a support rod (3), the bottom end of the support rod (3) is rotatably connected to the inner wall of the connecting block (2), the inner wall of the connecting block (2) is rotatably connected to the support rod (3), the bottom of the inner wall of the support rod (3) is provided with a servo motor (4), the output end of the servo motor (4) is fixedly connected to a threaded rod (5), the surface of the threaded rod (5) is threadedly connected to a slider (6), both sides of the slider (6) are rotatably connected to a connecting rod (7), the bottom end of the connecting rod (7) is rotatably connected to a movable block (8), a telescopic rod (9) is provided on one side of the movable block (8), the inner wall of the telescopic rod (9) is movably connected to a reset spring (10), and the surface of the movable block (8) is slidably connected to the inner wall of the base (1), the top of one side of the support rod (3) is fixedly connected to an arc block (11), and the top of the arc block (11) overlaps both sides of the bottom of the mounting plate (12).

2. A fixing device for a locomotive roof electrical appliance withstand voltage test according to claim 1, characterized in that: The top of the mounting plate (12) is fixedly connected to a C-shaped fixing plate (14), an inner wall of the C-shaped fixing plate (14) is provided with a mounting groove (15), and the top of the C-shaped fixing plate (14) is overlapped with a roof electrical appliance body (16).

3. The fixing device for a locomotive roof electrical appliance withstand voltage test according to claim 1, characterized in that: Foot pads (17) are fixedly connected to the four sides of the bottom of the base (1), a movable groove (18) is provided in the middle of the top of the base (1), and the surfaces of the movable block (8) and the telescopic rod (9) are movably connected to the inner wall of the movable groove (18).

4. A fixing device for a locomotive roof electrical appliance withstand voltage test according to claim 3, characterized in that: Slide grooves (19) are provided on both sides of the inner wall of the support rod (3), and the surface of the slider (6) is slidably connected to the inner wall of the slide groove (19).

5. The fixing device for a voltage withstand test of a locomotive roof electrical appliance according to claim 1, characterized in that: Arc-shaped grooves (20) are provided at the top and bottom of both sides of the mounting plate (12), and the contour of the arc-shaped grooves (20) is consistent with the contour of the arc-shaped block (11).

6. The fixing device for a voltage withstand test of a locomotive roof electrical appliance according to claim 1, characterized in that: The bottom of the mounting plate (12) is fixedly connected to a hydraulic cylinder (21), and the bottom end of the hydraulic cylinder (21) is fixedly connected to the top of the base (1).

7. The fixing device for a voltage withstand test of a locomotive roof electrical appliance according to claim 1, characterized in that: One side of the top of the connection block (2) is fixedly connected to a limiting plate (22), and one side of the limiting plate (22) is overlapped with the bottom end of one side of the support rod (3).

8. The fixing device for a voltage withstand test of a locomotive roof electrical appliance according to claim 1, characterized in that: The bottom of the inner wall of the support rod (3) is fixedly connected to a protection box (23), and the servo motor (4) is located on the inner wall of the protection box (23).

Images