A vacuum circuit breaker testing fixture

Abstract

This utility model relates to the field of testing fixture technology, specifically a testing fixture for vacuum circuit breakers. The utility model includes a base plate, with a mounting plate fixedly installed at one end of the base plate. A cylinder is mounted on the outer wall of the mounting plate, and a testing head is fixedly installed at the output end of the cylinder. A support plate is fixedly installed on the outer wall of the base plate, and a clamping and positioning mechanism is provided on the support plate. Slide plates are slidably connected to both outer walls of the base plate. A traction mechanism is provided between the outer walls of the base plate and the outer wall of the mounting plate. A limit frame is fixedly installed between the two slide plates. The clamping and positioning mechanism includes a hollow shaft. This utility model achieves automatic clamping and positioning of the vacuum circuit breaker by setting a clamping mechanism. Furthermore, by setting handles and turntables, the angle of the vacuum circuit breaker can be easily adjusted to adapt to testing operations at different angles. The traction mechanism, in conjunction with the limit frame, further supports and limits the vacuum circuit breaker, assisting in the subsequent installation of the pull rod.

Description

Technical Field

[0001] This utility model relates to the field of testing fixture technology, specifically a vacuum circuit breaker testing fixture. Background Technology

[0002] Vacuum circuit breakers are named for their high vacuum nature, which is both the arc-extinguishing medium and the insulating medium between the contacts after arc extinguishing. They have advantages such as small size, light weight, suitability for frequent operation, and no need for maintenance during arc extinguishing. They are widely used in power distribution networks. Among these applications, the testing of vacuum circuit breakers is particularly important. The main purpose is to test the performance and safety status of vacuum circuit breakers and determine whether they are suitable for use in power systems.

[0003] In the existing technology, when testing vacuum circuit breakers, a testing fixture is required. However, the testing relies heavily on manual handling and placement of the vacuum circuit breaker on the testing fixture, which cannot be automatically positioned and is prone to causing deviations in the test data. Furthermore, when adjusting the angle of the vacuum circuit breaker, manual moving is required, which is inefficient, time-consuming, and labor-intensive. Utility Model Content

[0004] The purpose of this invention is to provide a vacuum circuit breaker testing fixture to solve the problems mentioned in the background art.

[0005] The objective of this utility model can be achieved through the following technical solutions: A vacuum circuit breaker testing fixture includes a base plate, a mounting plate fixedly mounted on one end of the base plate, a cylinder mounted on the outer wall of the mounting plate, a testing head fixedly mounted on the output end of the cylinder, a support plate fixedly mounted on the outer wall of the base plate, a clamping and positioning mechanism provided on the support plate, sliding plates slidably connected to both outer walls of the base plate, a traction mechanism provided between the outer walls of the base plate and the outer walls of the mounting plate, and a limit frame fixedly mounted between the two sliding plates. The clamping and positioning mechanism includes a hollow shaft, which is rotatably connected to the top of the support plate. A connecting frame is fixedly connected to the bottom of the hollow shaft, and two connecting shafts are rotatably connected between the two inner side walls of the connecting frame.

[0006] Preferably, clamps are fixedly connected to the outer walls of both connecting shafts, gears are fixedly connected to one end of both connecting shafts, a motor is installed on the outer wall of the connecting frame, and the output end of the motor is connected to one end of one of the connecting shafts, and the two gears are meshed with each other.

[0007] Preferably, a insert shaft is inserted inside the hollow shaft, a turntable is fixedly connected to the outer wall of the insert shaft near the upper end, and a handle is fixedly connected to the upper end of the insert shaft.

[0008] Preferably, a limiting groove is formed on the upper surface of the turntable, a limiting block is inserted inside the limiting groove, and the bottom end of the limiting block is fixedly connected to the upper surface of the support plate. A slider is slidably connected to the inner wall of the hollow shaft, one end of the slider is fixedly connected to the insert shaft, and a tension spring is installed between the bottom end of the slider and the bottom end inside the hollow shaft.

[0009] Preferably, the traction mechanism includes a first winding shaft and a second winding shaft. Connecting plates are fixedly connected to both outer side walls of the base plate and both outer side walls of the mounting plate. The first winding shaft is rotatably connected between the inner side walls of two of the connecting plates, and the second winding shaft is rotatably connected between the other two connecting plates. A second traction rope is wound around the outside of the first winding shaft.

[0010] Preferably, the end of the second traction rope away from the first winding shaft is fixedly connected to the slide plate, the outer wall of the second winding shaft is fixedly connected to the first traction rope, and the end of the first traction rope away from the second winding shaft is fixedly connected to the slide plate.

[0011] Preferably, motors are installed on the outer walls of both connecting plates, and the output end of one motor is connected to one end of the take-up shaft, while the output end of the other motor is connected to one end of the take-up shaft. Limiting wheels are fixedly connected to the two outer walls of the base plate and the two outer walls of the mounting plate.

[0012] The beneficial effects of this utility model are: 1. In this utility model, the vacuum circuit breaker is placed on the upper surface of the base plate, and then the motor on the connecting frame is started to drive one connecting shaft to rotate, thereby driving the other connecting shaft to rotate synchronously in the opposite direction through the meshing gears, so that the two clamping plates close and can clamp the vacuum circuit breaker, realizing the automatic clamping and positioning of the vacuum circuit breaker.

[0013] 2. In this utility model, the upper handle drives the insertion shaft and turntable to rise, the limit block disengages from the limit groove of the turntable, and then the handle is rotated to drive the vacuum circuit breaker that has been clamped and positioned to rotate. After the adjustment is in place, the handle is released, at which time the tension spring returns to its original position, and drives the limit block to engage with the limit groove of the turntable, thereby fixing the angle and enabling convenient adjustment of the angle of the vacuum circuit breaker to adapt to different angle detection operations.

[0014] 3. In this utility model, two motors are started simultaneously, driving the first winding shaft and the second winding shaft to rotate at the same time. The second winding shaft winds up the first traction rope, while the second traction rope on the first winding shaft unwinds, allowing the wound traction rope to pull the slide plate along the base plate towards the mounting plate, causing the limit frame to be locked at the end of the vacuum circuit breaker, so that the limit frame further supports and limits the vacuum circuit breaker, assisting in the subsequent installation operation of the pull rod. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of the base plate and the support plate in this utility model; Figure 3 This is a schematic diagram of the clamping mechanism in this utility model; Figure 4 This is a cross-sectional view of the support plate and turntable in this utility model; Figure 5 This is a partial structural schematic diagram of the present invention.

[0016] The attached figures are labeled as follows: 1. Base plate; 2. Support plate; 3. Mounting plate; 4. Cylinder; 5. Detection head; 6. Clamping plate; 7. Connecting frame; 8. Turntable; 9. Handle; 10. Gear; 11. Connecting shaft; 12. Limiting frame; 13. Winding shaft one; 14. Connecting plate; 15. Winding shaft two; 16. Traction rope one; 17. Slide plate; 18. Hollow shaft; 19. Insert shaft; 20. Limiting block; 21. Sliding block; 22. Limiting wheel; 23. Traction rope two. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0018] A vacuum circuit breaker testing fixture, such as Figures 1-5 As shown, the device includes a base plate 1, an mounting plate 3 fixedly installed at one end of the base plate 1, a cylinder 4 installed on the outer wall of the mounting plate 3, a detection head 5 fixedly installed at the output end of the cylinder 4, a support plate 2 fixedly installed on the outer wall of the base plate 1, a clamping and positioning mechanism provided on the support plate 2, sliding plates 17 slidably connected to both outer walls of the base plate 1, a traction mechanism provided between the outer wall of the base plate 1 and the outer wall of the mounting plate 3, a limit frame 12 fixedly installed between the two sliding plates 17, and a hollow shaft 18 rotatably connected to the top position inside the support plate 2, a connecting frame 7 fixedly connected to the bottom end of the hollow shaft 18, and two connecting shafts 11 rotatably connected between the two inner walls of the connecting frame 7.

[0019] Clamping plates 6 are fixedly connected to the outer walls of both connecting shafts 11, and gears 10 are fixedly connected to one end of both connecting shafts 11. A motor is installed on the outer wall of the connecting frame 7, and the output end of the motor is connected to one end of one of the connecting shafts 11. The two gears 10 are meshed with each other. The motor model is MDM202A1G.

[0020] A hollow shaft 18 has an insert shaft 19 inserted inside. A turntable 8 is fixedly connected to the outer wall of the insert shaft 19 near the upper end. A handle 9 is fixedly connected to the upper end of the insert shaft 19. A limit groove is opened on the upper surface of the turntable 8. A limit block 20 is inserted inside the limit groove, and the bottom end of the limit block 20 is fixedly connected to the upper surface of the support plate 2. A slider 21 is slidably connected to the inner wall of the hollow shaft 18. One end of the slider 21 is fixedly connected to the insert shaft 19. A tension spring is installed between the bottom end of the slider 21 and the bottom end inside the hollow shaft 18. The limit block 20, in conjunction with the limit groove, can limit the position of the turntable 8 and fix the positions of the two clamping plates 6 and the connecting frame 7.

[0021] In use, the vacuum circuit breaker is placed on the upper surface of the base plate 1, and then the motor on the connecting frame 7 is started to drive one connecting shaft 11 to rotate. This drives the other connecting shaft 11 to rotate synchronously in the opposite direction through the meshing gears 10, so that the two clamping plates 6 close and clamp the vacuum circuit breaker, realizing the automatic clamping and positioning of the vacuum circuit breaker. During testing, after the circuit breaker is positioned, the cylinder 4 pushes the detection head 5 to contact the circuit breaker for performance testing, such as opening and closing stroke and contact resistance. This is existing technology and will not be described in detail.

[0022] When the angle of the vacuum circuit breaker needs to be adjusted, pull up the handle 9 to drive the insert shaft 19 and the turntable 8 to rise, the slider 21 moves up, the tension spring is stretched, and the limit block 20 disengages from the limit groove of the turntable 8. At this time, the handle 9 can be rotated to drive the insert shaft 19 and the hollow shaft 18 to rotate, thereby driving the connecting frame 7 to rotate as a whole, and then driving the vacuum circuit breaker that is clamped and positioned to rotate. After the adjustment is in place, release the handle 9. At this time, the tension spring resets, and the limit block 20 is driven into the limit groove of the turntable 8 to fix the angle. The traction mechanism includes a take-up shaft 13 and a take-up shaft 25. Connecting plates 14 are fixedly connected to the two outer side walls of the base plate 1 and the two outer side walls of the mounting plate 3. The take-up shaft 13 is rotatably connected between the inner side walls of two of the connecting plates 14, and the take-up shaft 25 is rotatably connected between the two outer connecting plates 14. A traction rope 23 is wound around the outside of the take-up shaft 13. The end of the traction rope 23 away from the take-up shaft 13 is fixedly connected to the slide plate 17. A traction rope 16 is fixedly connected to the outer wall of the take-up shaft 25, and the end of the traction rope 16 away from the take-up shaft 25 is fixedly connected to the slide plate 17. The take-up shaft 13 and the take-up shaft 25 rotate simultaneously, which can synchronously wind up and unwind the traction rope 16 and the traction rope 23, driving the slide plate 17 to slide stably along the outer wall of the base plate 1.

[0023] Both connecting plates 14 have motors mounted on their outer walls. Both motors are DM542 models. One motor's output is connected to one end of the take-up shaft 13, and the other motor's output is connected to one end of the take-up shaft 25. Limiting wheels 22 are fixedly connected to the two outer walls of the base plate 1 and the two outer walls of the mounting plate 3. The limiting wheels 22 ensure that the traction rope 16 and traction rope 23 do not deviate, thus ensuring a stable motion trajectory.

[0024] Specifically, when installing the pull rod of the vacuum circuit breaker to be tested, two motors can be started simultaneously to drive the first winding shaft 13 and the second winding shaft 15 to rotate at the same time. This causes the second winding shaft 15 to wind up the first traction rope 16, while the second traction rope 23 on the first winding shaft 13 unwinds. This causes the wound traction rope 16 to pull the slide plate 17 to slide along the base plate 1 towards the mounting plate 3, causing the limit frame 12 to be locked at the end of the vacuum circuit breaker. This further supports and limits the vacuum circuit breaker, assisting in the subsequent installation of the pull rod.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A vacuum circuit breaker detection jig comprising a base plate (1), characterized in that, A mounting plate (3) is fixedly installed at one end of the base plate (1). A cylinder (4) is installed on the outer wall of the mounting plate (3). A detection head (5) is fixedly installed at the output end of the cylinder (4). A support plate (2) is fixedly installed on the outer wall of the base plate (1). A clamping and positioning mechanism is provided on the support plate (2). Slide plates (17) are slidably connected to both outer walls of the base plate (1). A traction mechanism is provided between the outer wall of the base plate (1) and the outer wall of the mounting plate (3). A limit frame (12) is fixedly installed between the two slide plates (17). The clamping and positioning mechanism includes a hollow shaft (18), which is rotatably connected to the top of the support plate (2). A connecting frame (7) is fixedly connected to the bottom of the hollow shaft (18), and two connecting shafts (11) are rotatably connected between the two inner side walls of the connecting frame (7).

2. The vacuum circuit breaker detection jig according to claim 1, wherein The outer walls of the two connecting shafts (11) are fixedly connected with clamps (6), and one end of the two connecting shafts (11) is fixedly connected with a gear (10). The outer wall of the connecting frame (7) is equipped with a motor, and the output end of the motor is connected to one end of one of the connecting shafts (11). The two gears (10) are meshed with each other.

3. The vacuum circuit breaker detection jig according to claim 2, wherein The hollow shaft (18) has a insert shaft (19) inserted inside. A turntable (8) is fixedly connected to the outer wall of the insert shaft (19) near the upper end. A handle (9) is fixedly connected to the upper end of the insert shaft (19).

4. The vacuum circuit breaker detection jig according to claim 3, wherein The upper surface of the turntable (8) has a limiting groove, and a limiting block (20) is inserted inside the limiting groove. The bottom end of the limiting block (20) is fixedly connected to the upper surface of the support plate (2). A slider (21) is slidably connected to the inner wall of the hollow shaft (18). One end of the slider (21) is fixedly connected to the insert shaft (19). A tension spring is installed between the bottom end of the slider (21) and the bottom end inside the hollow shaft (18).

5. The vacuum circuit breaker detection fixture according to any one of claims 1-4, characterized in that, The traction mechanism includes a take-up shaft one (13) and a take-up shaft two (15). The two outer side walls of the base plate (1) and the two outer side walls of the mounting plate (3) are fixedly connected to connecting plates (14). The take-up shaft one (13) is rotatably connected between the inner side walls of two of the connecting plates (14). The take-up shaft two (15) is rotatably connected between the other two connecting plates (14). The take-up shaft one (13) is wrapped with a traction rope two (23).

6. The vacuum circuit breaker detection jig according to claim 5, wherein The end of the second traction rope (23) away from the first winding shaft (13) is fixedly connected to the slide plate (17). The outer wall of the second winding shaft (15) is fixedly connected to the first traction rope (16), and the end of the first traction rope (16) away from the second winding shaft (15) is fixedly connected to the slide plate (17).

7. The vacuum circuit breaker detection jig according to claim 6, wherein Motors are installed on the outer walls of both of the connecting plates (14), and the output end of one motor is connected to one end of the take-up shaft (13), while the output end of the other motor is connected to one end of the take-up shaft (15). Limiting wheels (22) are fixedly connected to the two outer walls of the base plate (1) and the two outer walls of the mounting plate (3).

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