Universal clamp for testing electric field coupling voltage sensor

Abstract

The utility model relates to the technical field of clamps, in particular to a universal clamp for testing an electric field coupling voltage sensor, which comprises a detection piece, the top of the left side of the detection piece is fixedly connected with the bottom of a driving piece, and the outer wall of the driving piece is meshed with the outer wall of a transmission piece. The outer walls of the two ends of the transmission part are rotationally connected with the inner walls of the guide parts, and the bottoms of the guide parts are fixedly connected with the tops of the front face and the back face of the detection part respectively. The two sides of the voltage sensor are clamped through the two sets of elastic clamping blocks, the clamping force and position can be automatically adjusted through driving of the motor, manual clamping operation is not needed, the two sets of clamps are driven by the same motor to operate together, energy is saved, the distance between the two elastic clamping blocks in the same set can be adjusted, and the clamping efficiency is improved. It is ensured that the sensor cannot be damaged due to too tight clamping in the testing process, the clamp can stably clamp the voltage sensors of different sizes, and the applicability of the clamp is improved.

Description

Technical Field

[0001] This utility model relates to the field of fixture technology, specifically a general-purpose fixture for testing electric field coupled voltage sensors. Background Technology

[0002] To meet the requirements of accurately measuring the voltage of unknown line types and adapting to complex low-voltage measurement environments, an electric field coupling voltage sensor based on topology transformation was designed. To improve the accuracy of the measurement, the designed electric field coupling voltage sensor needs to be tested. During the test, a clamp is needed to fix it in place to prevent it from shifting.

[0003] In the process of realizing this utility model, the inventors discovered the following problems with the existing technology: Most clamps on the market can only clamp one side of the sensor. In order to improve the stability of detection, two sets of clamps are required when clamping both sides, which adds a driving source and increases energy consumption. Utility Model Content

[0004] The purpose of this invention is to provide a universal clamp for testing electric field coupled voltage sensors, thereby solving the problem mentioned in the background art that most clamps can only hold one side of the sensor. To achieve the above objective, this invention provides the following technical solution: a universal clamp for testing electric field coupled voltage sensors, including a detection element, the top of the left side of the detection element being fixedly connected to the bottom of a driving element, the outer wall of the driving element being meshed with the outer wall of a transmission element, and the outer walls at both ends of the transmission element being rotatably connected to the inner wall of a guide element;

[0005] The bottom of the guide is fixedly connected to the top of the front and back sides of the detection component, the left side of the detection component is fixedly welded to one end of the first clamping component, the bottom of the first clamping component is fixedly connected to the top of the transmission component, and the inner wall of the first clamping component is threadedly connected to the outer wall of the second clamping component.

[0006] The first clamping member includes a connecting block. The outer wall of the connecting block is rotatably connected to the inner wall of one end of each of the two first connecting rods, and the inner wall of the other end of each of the two first connecting rods is rotatably connected to the outer wall of each of the two connecting shafts. The outer walls of the two connecting shafts near the first connecting rods are rotatably connected to the inner walls of the two second connecting rods, and the inner walls at the center of each of the two second connecting rods are rotatably connected to the outer wall of the support shaft. The inner walls of the two second connecting rods away from the first connecting rods are provided with screw holes.

[0007] More preferably, the testing component includes a testing instrument, the outer wall of which is fixedly welded to the outer wall of the testing platform.

[0008] More preferably, the driving component includes a mounting base, the inner wall of which is fixedly connected to the outer wall of the motor by bolts, and the output end of the motor is fixedly connected to one end of the rotating rod by a coupling. The outer wall of the other end of the rotating rod is fixedly connected to the inner wall of the first bevel gear, and the bottom of the mounting base is fixedly connected to the top of the left side of the testing platform.

[0009] More preferably, the transmission component includes a bidirectional screw, the outer walls of both ends of the bidirectional screw are respectively threaded to the inner walls of the two transmission plates, and the outer wall of the center of the bidirectional screw is fixedly connected to the inner wall of the second bevel gear, and the outer wall of the second bevel gear is meshed with the outer wall of the first bevel gear.

[0010] More preferably, the guide includes a support block, the inner wall of which is fixedly connected to the outer walls at both ends of the guide rod, and the inner wall of the support block near the guide rod is rotatably connected to the outer walls at both ends of the bidirectional screw, and the bottom of the support block is fixedly connected to the top of the front and back of the detection table.

[0011] More preferably, the connecting block, the two first connecting rods, the two connecting shafts, the two second connecting rods, the support shaft and the screw hole are all provided in two sets, and the two sets are symmetrical about the horizontal center line of the detection table. The bottom of the two sets of connecting blocks are respectively fixedly connected to the top of the two transmission plates, and the end of the two sets of support shafts away from the second connecting rods is fixedly welded to the left side of the detector.

[0012] More preferably, the second clamping member includes a stud, the outer wall of one end of the stud is fixedly welded to the outer wall of the mounting block, and the inner wall of the mounting block is fixedly connected to the outer wall of the elastic clamping block. The stud, the mounting block and the elastic clamping block are each provided with two sets, and the outer walls of the two sets of studs are respectively threaded to the inner walls of the two sets of screw holes.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] In this invention, a starting motor drives a rotating rod to rotate. The rotation of the rotating rod causes the connected first bevel gear to rotate as well, causing the second bevel gear, which meshes with the first bevel gear, to rotate synchronously. This, in turn, drives a bidirectional screw to rotate. Under the action of the screw thread, the two sets of transmission plates move closer together, causing the connecting block and the support shaft to move closer together. This causes the second connecting rod to rotate around the axis of the support shaft, driving the elastic clamping block to perform an arc motion around the axis of the support shaft. The two sets of elastic clamping blocks clamp the voltage sensor on both sides. Driven by the motor, the clamps can automatically adjust the clamping force and position, eliminating the need for manual clamping operations. Furthermore, using the same motor to drive both sets of clamps saves energy.

[0015] In this invention, by rotating the mounting block to make itself and the stud rotate and move vertically along the axis of the screw hole, the distance between the two elastic clamping blocks in the same group can be adjusted, ensuring that the sensor will not be damaged due to excessive clamping during the test, and enabling the fixture to stably clamp voltage sensors of different sizes, thus improving the applicability of the fixture. Attached Figure Description

[0016] Figure 1 This is the front view of the present invention;

[0017] Figure 2 This is a cross-sectional view of the present invention;

[0018] Figure 3 This is an overall view of the testing component in this utility model;

[0019] Figure 4 This is a cross-sectional view of the driving component in this utility model;

[0020] Figure 5 This is a cross-sectional view of the transmission component and the guide component in this utility model;

[0021] Figure 6 This is an overall view of the first clamping component in this utility model;

[0022] Figure 7 This is an overall view of the second clamping component in this utility model.

[0023] In the diagram: 1. Detector; 101. Detector; 102. Detection table; 2. Drive component; 201. Mounting base; 202. Motor; 203. Rotating rod; 204. First bevel gear; 3. Transmission component; 301. Bidirectional screw; 302. Transmission plate; 303. Second bevel gear; 4. Guide component; 401. Support block; 402. Guide rod; 5. First clamping component; 501. Connecting block; 502. First connecting rod; 503. Connecting shaft; 504. Second connecting rod; 505. Support shaft; 506. Screw hole; 6. Second clamping component; 601. Stud; 602. Mounting block; 603. Elastic clamping block. Detailed Implementation

[0024] 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.

[0025] Please see Figures 1 to 7This utility model provides a technical solution: a universal electric field coupling voltage sensor test fixture, including a detection component 1, the top of the left side of the detection component 1 is fixedly connected to the bottom of the driving component 2, the outer wall of the driving component 2 is meshed with the outer wall of the transmission component 3, and the outer walls at both ends of the transmission component 3 are rotatably connected to the inner wall of the guide component 4.

[0026] The bottom of the guide 4 is fixedly connected to the top of the front and back sides of the detection component 1, respectively. The left side of the detection component 1 is fixedly welded to one end of the first clamping component 5. The bottom of the first clamping component 5 is fixedly connected to the top of the transmission component 3. The inner wall of the first clamping component 5 is threadedly connected to the outer wall of the second clamping component 6.

[0027] The first clamping member 5 includes a connecting block 501. The outer wall of the connecting block 501 is rotatably connected to the inner wall of one end of each of the two first connecting rods 502. The inner wall of the other end of each of the two first connecting rods 502 is rotatably connected to the outer wall of each of the two connecting shafts 503. The outer wall of each of the two connecting shafts 503 near the first connecting rods 502 is rotatably connected to the inner wall of each of the two second connecting rods 504. The inner wall of the center of each of the two second connecting rods 504 is rotatably connected to the outer wall of the support shaft 505. The inner wall of each of the two second connecting rods 504 away from the first connecting rods 502 is provided with a screw hole 506.

[0028] In this embodiment, as Figure 3 As shown, the test component 1 includes a tester 101. The outer wall of the tester 101 is fixedly welded to the outer wall of the test table 102. The voltage sensor fixed by the fixture is tested by the tester 101.

[0029] In this embodiment, as Figure 1 , Figure 2 and Figure 4 As shown, the driving component 2 includes a mounting base 201. The inner wall of the mounting base 201 is fixedly connected to the outer wall of the motor 202 by bolts. The output end of the motor 202 is fixedly connected to one end of the rotating rod 203 by a coupling. The outer wall of the other end of the rotating rod 203 is fixedly connected to the inner wall of the first bevel gear 204. The bottom of the mounting base 201 is fixedly connected to the top of the left side of the detection table 102. When the motor 202 is started, the rotating rod 203 is driven to rotate. When the rotating rod 203 rotates, it drives the connected first bevel gear 204 to rotate together.

[0030] In this embodiment, as Figure 1 , Figure 2 and Figure 5As shown, the transmission component 3 includes a bidirectional screw 301. The outer walls of both ends of the bidirectional screw 301 are threadedly connected to the inner walls of the two transmission plates 302, and the outer wall of the center of the bidirectional screw 301 is fixedly connected to the inner wall of the second bevel gear 303. The outer wall of the second bevel gear 303 meshes with the outer wall of the first bevel gear 204. The rotation of the first bevel gear 204 causes the second bevel gear 303 meshing with the first bevel gear 204 to rotate synchronously, thereby driving the bidirectional screw 301 to rotate. Under the action of the screw, the two sets of transmission plates 302 are driven to move closer to each other.

[0031] In this embodiment, as Figure 1 , Figure 2 and Figure 5 As shown, the guide 4 includes a support block 401. The inner wall of the support block 401 is fixedly connected to the outer walls of both ends of the guide rod 402. The inner wall of the support block 401 near the guide rod 402 is rotatably connected to the outer walls of both ends of the bidirectional screw 301. The bottom of the support block 401 is fixedly connected to the top of the front and back of the detection table 102. When the transmission plate 302 moves, the guide rod 402 provides guidance to prevent it from rotating together with the bidirectional screw 301.

[0032] In this embodiment, as Figure 1 , Figure 2 and Figure 6 As shown, there are two sets of connecting blocks 501, two first connecting rods 502, two connecting shafts 503, two second connecting rods 504, support shafts 505, and screw holes 506. Both sets are symmetrical about the horizontal center line of the testing table 102. The bottom of the two sets of connecting blocks 501 are fixedly connected to the top of the two transmission plates 302 respectively. The ends of the two sets of support shafts 505 away from the second connecting rods 504 are fixedly welded to the left side of the testing instrument 101. The two sets of transmission plates 302 move closer to each other, causing the connecting blocks 501 and support shafts 505 to move closer to each other, thereby causing the second connecting rods 504 to rotate around the axis of the support shafts 505.

[0033] In this embodiment, as Figure 1 , Figure 2 and Figure 7 As shown, the second clamping member 6 includes a stud 601. The outer wall of one end of the stud 601 is fixedly welded to the outer wall of the mounting block 602, and the inner wall of the mounting block 602 is fixedly connected to the outer wall of the elastic clamping block 603. Two sets of studs 601, mounting blocks 602 and elastic clamping blocks 603 are provided, and the outer walls of the two sets of studs 601 are respectively threaded to the inner walls of the two sets of screw holes 506. When the second connecting rod 504 rotates around the axis of the support shaft 505, it drives the elastic clamping block 603 to make an arc motion around the axis of the support shaft 505, and clamps the two sides of the voltage sensor through the two sets of elastic clamping blocks 603.

[0034] The method of use and advantages of this utility model: The working process of this universal electric field coupling voltage sensor testing fixture is as follows:

[0035] like Figures 1 to 7 As shown, the voltage sensor to be tested is placed between two sets of elastic clamping blocks 603. The motor 202 is started to drive the rotating rod 203 to rotate. When the rotating rod 203 rotates, it drives the connected first bevel gear 204 to rotate together, causing the second bevel gear 303, which meshes with the first bevel gear 204, to rotate synchronously. This, in turn, drives the bidirectional screw 301 to rotate. Under the action of the screw, it drives the two sets of transmission plates 302 to move closer together, causing the connecting block 501 and the support shaft 505 to move closer together. This causes the second connecting rod 504 to rotate around the axis of the support shaft 505, causing the elastic clamping block 603 to make an arc motion around the axis of the support shaft 505. The voltage sensor is clamped on both sides by two sets of elastic clamping blocks 603. Driven by the motor 202, the clamp can automatically adjust the clamping force and position, eliminating the need for manual clamping operations. The same motor 202 drives both sets of clamps to operate together, saving energy. By rotating the mounting block 602, it and the stud 601 rotate and move vertically along the axis of the screw hole 506, which can adjust the distance between the two elastic clamping blocks 603 in the same group, ensuring that the sensor will not be damaged due to excessive clamping during testing. The clamp can stably clamp voltage sensors of different sizes, improving the applicability of the clamp.

[0036] 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 preferred examples and are not intended to limit the 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. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A universal electric field coupling voltage sensor testing fixture, comprising a detection element (1), characterized in that: The top of the left side of the detection component (1) is fixedly connected to the bottom of the driving component (2), the outer wall of the driving component (2) is meshed with the outer wall of the transmission component (3), and the outer walls at both ends of the transmission component (3) are rotatably connected to the inner wall of the guide component (4). The bottom of the guide (4) is fixedly connected to the top of the front and back sides of the detection component (1), the left side of the detection component (1) is fixedly welded to one end of the first clamping component (5), the bottom of the first clamping component (5) is fixedly connected to the top of the transmission component (3), and the inner wall of the first clamping component (5) is threadedly connected to the outer wall of the second clamping component (6). The first clamping member (5) includes a connecting block (501). The outer wall of the connecting block (501) is rotatably connected to the inner wall of one end of the two first connecting rods (502), and the inner wall of the other end of the two first connecting rods (502) is rotatably connected to the outer wall of the two connecting shafts (503). The outer wall of the two connecting shafts (503) near the first connecting rods (502) is rotatably connected to the inner wall of the two second connecting rods (504), and the inner wall of the center of the two second connecting rods (504) is rotatably connected to the outer wall of the support shaft (505). The inner wall of the two second connecting rods (504) away from the first connecting rods (502) is provided with screw holes (506).

2. The universal electric field coupling voltage sensor test fixture according to claim 1, characterized in that: The testing component (1) includes a testing instrument (101), the outer wall of which is fixedly welded to the outer wall of the testing table (102).

3. The universal electric field coupling voltage sensor test fixture according to claim 2, characterized in that: The drive unit (2) includes a mounting base (201). The inner wall of the mounting base (201) is fixedly connected to the outer wall of the motor (202) by bolts. The output end of the motor (202) is fixedly connected to one end of the rotating rod (203) by a coupling. The outer wall of the other end of the rotating rod (203) is fixedly connected to the inner wall of the first bevel gear (204). The bottom of the mounting base (201) is fixedly connected to the top left side of the detection table (102).

4. The universal electric field coupling voltage sensor test fixture according to claim 3, characterized in that: The transmission component (3) includes a bidirectional screw (301), the outer walls of both ends of the bidirectional screw (301) are threadedly connected to the inner walls of the two transmission plates (302) respectively, and the outer wall of the center of the bidirectional screw (301) is fixedly connected to the inner wall of the second bevel gear (303), and the outer wall of the second bevel gear (303) is meshed with the outer wall of the first bevel gear (204).

5. The universal electric field coupling voltage sensor test fixture according to claim 4, characterized in that: The guide (4) includes a support block (401), the inner wall of the support block (401) is fixedly connected to the outer walls of both ends of the guide rod (402), and the inner wall of the support block (401) near the guide rod (402) is rotatably connected to the outer walls of both ends of the bidirectional screw (301). The bottom of the support block (401) is fixedly connected to the top of the front and back sides of the detection table (102).

6. The universal electric field coupling voltage sensor test fixture according to claim 4, characterized in that: The connecting block (501), two first connecting rods (502), two connecting shafts (503), two second connecting rods (504), support shaft (505) and screw hole (506) are all provided in two sets, and both sets are symmetrically arranged about the horizontal center line of the detection table (102). The bottom of the two sets of connecting blocks (501) are fixedly connected to the top of the two transmission plates (302) respectively, and the end of the two sets of support shafts (505) away from the second connecting rod (504) is fixedly welded to the left side of the detector (101).

7. The universal electric field coupling voltage sensor test fixture according to claim 6, characterized in that: The second clamping member (6) includes a stud (601). The outer wall of one end of the stud (601) is fixedly welded to the outer wall of the mounting block (602), and the inner wall of the mounting block (602) is fixedly connected to the outer wall of the elastic clamping block (603). The stud (601), the mounting block (602) and the elastic clamping block (603) are each provided with two sets, and the outer walls of the two sets of studs (601) are respectively threaded to the inner walls of the two sets of screw holes (506).

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