Self-standing knife switch contact finger clamping force measuring device

Abstract

The invention discloses a self-standing knife-switch contact finger clamping force measuring device, which comprises a base and two fixing plates fixedly mounted at the upper end of the base, and is characterized in that when the clamping force of a knife-switch contact finger test piece is measured, the knife-switch contact finger test piece is placed in a fixing frame, a motor is started to drive a transmission belt to move, and the clamping force of the knife-switch contact finger test piece is measured; the transmission belt drives the fixed frame and the knife switch contact finger test piece to move together, when the fixed frame moves to the right lower end of the first movable plate, the fixed frame can be automatically limited and clamped at the right lower end of the first movable plate, and at the moment, the clamping force measuring mechanism can be moved to test the clamping force of the knife switch contact finger test piece. The self-standing knife-switch contact finger clamping force measuring device can automatically stop moving when the knife-switch contact finger test piece is automatically moved to the right lower end of the first movable plate, fixation is completed through cooperation of the clamping assembly and the first sliding groove, at the moment, the clamping force of the knife-switch contact finger test piece can be tested, operation is simple, and the measuring efficiency is high. And manual alignment and calibration are not needed for testing.

Description

Technical Field

[0001] The invention relates to the technical field of electric power equipment, in particular to a self-supporting knife switch contact finger clamping force measuring device. Background Art

[0002] The knife switch is the most widely used high-voltage switchgear. Its working principle and structure are relatively simple, with high requirements for working reliability and obvious disconnection points. It plays a vital role in the safe and stable operation of the power system. The safe operation of the knife switch is closely related to the clamping force of the contacts. Therefore, when carrying out inspection and maintenance on the knife switch, strict requirements should be imposed on the inspection and maintenance of the contacts.

[0003] Most of the existing knife switch contact finger clamping force measurements are performed using spring scales. The test is inaccurate and requires manual alignment of the knife switch contact fingers one by one before starting the test, which is inconvenient to operate. When the test volume is large, a lot of time will be spent on aligning the gap between the knife switch contact fingers, which is inefficient and labor-intensive.

[0004] Therefore, we proposed a self-supporting knife switch contact finger clamping force measuring device to solve the above problems. Summary of the invention

[0005] The present invention provides a self-supporting knife switch contact finger clamping force measuring device, which solves the problem mentioned in the above background technology that most of the existing knife switch contact finger clamping force measurements are detected by spring scales, the test is inaccurate and requires manual alignment to the knife switch contact fingers one by one before starting the test, which is inconvenient to operate. When the test volume is large, a lot of time will be spent on aligning the gap between the knife switch contact fingers, which is inefficient and labor-intensive.

[0006] The present invention provides the following technical solutions: a self-supporting knife switch contact finger clamping force measuring device, comprising a base and two fixed plates fixedly installed on the upper end of the base, a transmission belt is commonly installed between the two fixed plates, a fixed seat is fixedly installed on the upper end of the base, a motor is fixedly installed on the fixed seat, a knife switch contact finger test piece is placed on the transmission belt, a vertical plate is fixedly installed on the upper end of the base, a movable plate 1 is slidably connected to the vertical plate, a clamping force measuring mechanism is fixedly installed on the lower end of the movable plate 1, a fixed frame is movably installed on the transmission belt, a clamping assembly is fixedly installed on one end of the fixed frame, a slide groove 1 is opened on the side wall of one of the fixed plates, and the knife switch contact finger test piece is placed in the fixed frame.

[0007] As an optional solution described in the present invention, the clamping assembly includes a fixed block fixedly installed on the side wall of the fixed frame, a cavity is opened in the fixed block, and a movable block is slidably connected in the cavity.

[0008] As an optional solution described in the present invention, a spring 1 is fixedly installed between the side wall of the movable block and the inner wall of the cavity, and a telescopic rod is fixedly installed between the side wall of the movable block and the inner wall of the cavity.

[0009] As an optional solution described in the present invention, wherein: two slide grooves are opened on both sides of the movable block, and there are clamping blocks slidably connected in the two slide grooves, and two springs are fixedly installed between the inner walls of the clamping blocks and the inner walls of the two slide grooves.

[0010] As an optional solution described in the present invention, wherein: slide grooves three are provided on both sides of the slide groove one, and clamping grooves are provided between the slide groove one and the two slide grooves three, and the clamping block can be clamped in the clamping grooves.

[0011] As an optional solution described in the present invention, wherein: a movable plate 2 is slidably connected in the slide groove 1, and a spring 3 is fixedly installed between the lower end of the movable plate 2 and the inner wall of the lower end of the slide groove 1.

[0012] As an optional solution described in the present invention, a push block is fixedly installed at one end of the movable plate one, and the two sides of the lower end of the push block can slide in the slide groove three respectively, the two sides of the lower end of the push block are both arc-shaped surfaces, and the two sides of one end of the clamping block are both arc-shaped surfaces.

[0013] As an optional solution described in the present invention, wherein: a slide groove four is opened in the vertical plate, a vertical rod is fixedly installed in the slide groove four, the vertical plate is slidably connected to the vertical rod, and a spring four is fixedly installed between the lower end of the vertical plate and the inner wall of the slide groove four.

[0014] The present invention has the following beneficial effects:

[0015] 1. When measuring the clamping force of the knife gate contact finger test piece, put the knife gate contact finger test piece into the fixed frame, start the motor to drive the transmission belt to move, and the transmission belt drives the fixed frame and the knife gate contact finger test piece to move together. When the fixed frame moves to the lower end of the movable plate 1, the fixed frame limit card can be automatically clamped at the lower end of the movable plate 1. At this time, the clamping force measuring mechanism can be moved to test the clamping force of the knife gate contact finger test piece. The self-supporting knife gate contact finger clamping force measuring device can automatically stop moving when the knife gate contact finger test piece is automatically moved to the lower end of the movable plate 1, and the fixation is completed through the cooperation of the clamping assembly and the slide groove 1. At this time, the clamping force of the knife gate contact finger test piece can be tested. The operation is simple and no manual alignment and calibration are required before testing.

[0016] 2. With the cooperation of the fixed block, the cavity, the movable block, the second slide slot, the second spring, the clamping block, the first spring, the telescopic rod, the knife switch contact finger test piece and the clamping force measuring mechanism, the device can automatically return the clamping force measuring mechanism to its original position after the test of the knife switch contact finger test piece is completed, and automatically release the limit after the test is completed, and move the next knife switch contact finger test piece to the test position to start the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the present invention.

[0019] Figure 3 It is a schematic diagram of the cross-sectional structure of the fixing plate system of the present invention.

[0020] Figure 4 For the present invention Figure 3 Enlarged structural diagram at A in the middle.

[0021] In the figure: 1. base; 11. fixed plate; 12. transmission belt; 13. vertical plate; 131. slide groove four; 132. vertical rod; 133. spring four; 14. fixed seat; 15. movable plate one; 16. push block; 17. slide groove one; 171. movable plate two; 172. spring three; 18. slide groove three; 19. clamping slot; 2. motor; 3. fixed frame; 4. clamping assembly; 41. fixed block; 42. cavity; 43. movable block; 44. slide groove two; 45. spring two; 46. clamping block; 47. spring one; 48. telescopic rod; 5. knife switch contact finger test piece; 6. clamping force measuring mechanism. DETAILED DESCRIPTION

[0022] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0023] Example 1

[0024] See also Figure 1 - Figure 3A self-supporting knife switch contact finger clamping force measuring device comprises a base 1 and two fixed plates 11 fixedly installed on the upper end of the base 1, a transmission belt 12 is installed between the two fixed plates 11, a fixed seat 14 is fixedly installed on the upper end of the base 1, a motor 2 is fixedly installed on the fixed seat 14, a knife switch contact finger test piece 5 is placed on the transmission belt 12, a vertical plate 13 is fixedly installed on the upper end of the base 1, a movable plate 15 is slidably connected to the vertical plate 13, a clamping force measuring mechanism 6 is fixedly installed on the lower end of the movable plate 15, a fixed frame 3 is movably installed on the transmission belt 12, a clamping assembly 4 is fixedly installed on one end of the fixed frame 3, a slide groove 17 is opened on the side wall of one of the fixed plates 11, and the knife switch contact finger test piece 5 is placed in the fixed frame 3.

[0025] When measuring the clamping force of the knife gate contact finger test piece 5, first place the knife gate contact finger test piece 5 in the fixed frame 3 on the transmission belt 12, and then start the motor 2. The motor 2 starts to drive the transmission belt 12 to move, and the transmission belt 12 drives the fixed frame 3 and the knife gate contact finger test piece 5 to move together. When the fixed frame 3 moves to the lower end of the movable plate 15, the clamping component 4 on the side of the fixed frame 3 just slides to the upper end of the slide groove 17. With the cooperation of the clamping component 4 and the slide groove 17, the fixed frame 3 limit card can be automatically At the lower end of the movable plate 15, the movable plate 15 can be moved downward, and the movable plate 15 slides along the vertical plate 13 and drives the clamping force measuring mechanism 6 to test the clamping force of the knife switch contact finger test piece 5. The device can automatically stop moving when the knife switch contact finger test piece 5 is automatically moved to the lower end of the movable plate 15, and the fixation is completed through the cooperation of the clamping component 4 and the slide groove 17. At this time, the clamping force of the knife switch contact finger test piece 5 can be tested. The operation is simple and there is no need for manual alignment and calibration before testing.

[0026] Example 2

[0027] See also Figure 2 - Figure 4 The clamping assembly 4 includes a fixed block 41 fixedly mounted on the side wall of the fixed frame 3, a cavity 42 is defined in the fixed block 41, a movable block 43 is slidably connected in the cavity 42, and the movable block 43 can slide in the cavity 42 under the cooperation between the fixed frame 3, the fixed block 41, the cavity 42 and the movable block 43.

[0028] A spring 47 is fixedly installed between the side wall of the movable block 43 and the inner wall of the cavity 42, and a telescopic rod 48 is fixedly installed between the side wall of the movable block 43 and the inner wall of the cavity 42. With the cooperation between the movable block 43, the spring 47 and the telescopic rod 48, the spring 47 can automatically push the movable block 43 outward.

[0029] Slide grooves 44 are provided on both sides of the movable block 43, and blocks 46 are slidably connected in the two slide grooves 44. Springs 45 are fixedly installed between the inner walls of the blocks 46 and the inner walls of the slide grooves 44. With the cooperation between the movable block 43, the slide grooves 44, the blocks 46 and the springs 45, the springs 45 can automatically push the blocks 46 outward.

[0030] Slide grooves 3 18 are provided on both sides of the slide groove 17, and clamping grooves 19 are provided between the slide groove 17 and the two slide grooves 3 18. The clamping block 46 can be clamped in the clamping groove 19. With the cooperation between the slide groove 17, the slide groove 3 18, the clamping groove 19 and the clamping block 46, the clamping block 46 can be clamped in the clamping groove 19 to complete the fixation of the fixed frame 3 and the knife switch contact finger test piece 5.

[0031] A movable plate 2 171 is slidably connected in the slide groove 17, and a spring 3 172 is fixedly installed between the lower end of the movable plate 2 171 and the inner wall of the lower end of the slide groove 17. Under the cooperation between the slide groove 17, the movable plate 2 171 and the spring 3 172, the movable plate 2 171 can be pushed outward by the spring 3 172.

[0032] A push block 16 is fixedly installed at one end of the movable plate 15, and the two sides of the lower end of the push block 16 can slide in the slide groove 3 18 respectively. The two sides of the lower end of the push block 16 are arc-shaped surfaces, and the two sides of one end of the clamping block 46 are arc-shaped surfaces. With the cooperation of the movable plate 15, the push block 16, the slide groove 3 18 and the clamping block 46, when the push block 16 slides in the slide groove 3 18, the clamping block 46 can be pushed back into the slide groove 2 44.

[0033] A slide groove 131 is provided in the vertical plate 13, and a vertical rod 132 is fixedly installed in the slide groove 131. The vertical plate 13 is slidably connected with the vertical rod 132. A spring 133 is fixedly installed between the lower end of the vertical plate 13 and the inner wall of the slide groove 131. With the cooperation between the vertical plate 13, the slide groove 131, the vertical rod 132 and the spring 133, the spring 133 can push the vertical plate 13 back to its original position after the movement.

[0034] When testing the clamping force of the knife switch contact finger test piece 5, first put the knife switch contact finger test piece 5 into the fixed frame 3, and then drive the fixed frame 3 to move the knife switch contact finger test piece 5 along the direction of the fixed plate 11 through the motor 2. During this movement, the movable block 43 and the clamping block 46 in the movable block 43 are both inside the cavity 42. At this time, the spring 2 45 and the spring 1 47 are both in a compressed state. When the fixed frame 3 moves to the lower end of the movable plate 15, the movable block 43 just moves to the slide groove 1. 17, at this time, under the push of spring 1 47, the movable block 43 is pushed outward and slides into the slide groove 17, and when the movable block 43 slides to the card slot 19, the card blocks 46 on both sides are automatically pushed outward by spring 2 45, and the card block 45 is pushed by spring 2 45 to be stuck in the card slot 19. When the fixed block 41 slides in the slide groove 17, it pushes the movable plate 2 171 downward, and the spring 3 172 is in a compressed state. At this time, the movable plate 15 can be pulled downward to test the knife switch contact finger. When the clamping force of the tool switch contact finger test piece 5 is tested, the movable plate 15 is released, and the movable plate 15 is pushed back to its original position by the spring four 133. At this time, the clamping assembly 4 is also in a released state, and the next tool switch contact finger test piece 5 can be automatically tested. The device can automatically send the clamping force measuring mechanism 6 back to its original position after the test of the tool switch contact finger test piece 5 is completed, and automatically release the limit after the test is completed, and move the next tool switch contact finger test piece 5 to the test position to start the test.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0036] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A self-supporting knife switch contact finger clamping force measuring device, comprising a base (1) and two fixing plates (11) fixedly mounted on the upper end of the base (1), a transmission belt (12) being installed between the two fixing plates (11), a fixing seat (14) being fixedly mounted on the upper end of the base (1), a motor (2) being fixedly mounted on the fixing seat (14), a knife switch contact finger test piece (5) being placed on the transmission belt (12), characterized in that: A vertical plate (13) is fixedly mounted on the upper end of the base (1), a movable plate (15) is slidably connected to the vertical plate (13), a clamping force measuring mechanism (6) is fixedly mounted on the lower end of the movable plate (15), a fixed frame (3) is movably mounted on the transmission belt (12), a clamping assembly (4) is fixedly mounted on one end of the fixed frame (3), a sliding groove (17) is provided on the side wall of one of the fixed plates (11), and the knife switch contact finger test piece (5) is placed in the fixed frame (3).

2. The self-supporting knife switch contact finger clamping force measuring device according to claim 1 is characterized in that: The clamping assembly (4) comprises a fixed block (41) fixedly mounted on the side wall of the fixed frame (3), a cavity (42) is provided in the fixed block (41), and a movable block (43) is slidably connected in the cavity (42).

3. The self-supporting knife switch contact finger clamping force measuring device according to claim 2 is characterized in that: A spring (47) is fixedly installed between the side wall of the movable block (43) and the inner wall of the cavity (42), and a telescopic rod (48) is fixedly installed between the side wall of the movable block (43) and the inner wall of the cavity (42).

4. The self-supporting knife switch contact finger clamping force measuring device according to claim 3 is characterized in that: Two sliding grooves (44) are provided on both sides of the movable block (43), and clamping blocks (46) are slidably connected in the two sliding grooves (44), and a spring (45) is fixedly installed between the inner wall of the clamping block (46) and the inner wall of the sliding groove (44).

5. The self-supporting knife switch contact finger clamping force measuring device according to claim 4 is characterized in that: Slide grooves (18) are provided on both sides of the slide groove one (17), and clamping grooves (19) are provided between the slide groove one (17) and the two slide grooves three (18), and the clamping block (46) can be clamped in the clamping grooves (19).

6. The self-supporting knife switch contact finger clamping force measuring device according to claim 5 is characterized in that: A movable plate 2 (171) is slidably connected in the slide groove 1 (17), and a spring 3 (172) is fixedly installed between the lower end of the movable plate 2 (171) and the lower end inner wall of the slide groove 1 (17).

7. The self-supporting knife switch contact finger clamping force measuring device according to claim 6 is characterized in that: A push block (16) is fixedly mounted on one end of the movable plate (15), and both sides of the lower end of the push block (16) can slide in the slide groove (18) respectively, and both sides of the lower end of the push block (16) are arc-shaped surfaces, and both sides of one end of the clamping block (46) are arc-shaped surfaces.

8. The self-supporting knife switch contact finger clamping force measuring device according to claim 7 is characterized in that: A sliding groove (131) is provided in the vertical plate (13), a vertical rod (132) is fixedly installed in the sliding groove (131), the vertical plate (13) is slidably connected to the vertical rod (132), and a spring (133) is fixedly installed between the lower end of the vertical plate (13) and the inner wall of the sliding groove (131).

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