Current detection calipers

Abstract

The utility model provides a pair of current detection calipers, which comprises an insulating grip, a connecting plate, a current detector, a telescopic assembly and a detection assembly, the insulating grip, the connecting plate, the current detector, the telescopic assembly and the detection assembly are sequentially arranged, and the detection assembly is electrically connected with the current detector; the detection assembly comprises a bearing assembly, a caliper assembly and a clamping assembly, the bottom of the bearing assembly is connected with the telescopic assembly, and the caliper assembly and the clamping assembly are sequentially arranged in the bearing assembly from top to bottom. According to the current detection calipers, an operator does not need to control a wrench to make close contact with detected lines, safety is improved, the current detection calipers can detect the detected lines with different diameters due to the arrangement of the clamping assembly, the operator does not need to stoop for detection when the lines on the rail are detected due to the arrangement of the telescopic assembly, and the detection efficiency is improved. When a line at a high position is detected, an operator does not need to climb a ladder, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of current detection, in particular to a current detection caliper. Background Art

[0002] In recent years, with the rapid development of the railway industry, the use of various types of electrical and electronic equipment in railways has increased significantly. These electrical and electronic equipment have become more sophisticated, intelligent, and integrated, providing strong support for the efficient operation of railway systems.

[0003] Power transformers are the most critical electrical equipment in power systems. Failures during operation can have serious consequences for the system. Clamp-on ammeters are widely used in various current measurement applications because they can measure current without disconnecting the circuit being measured. Currently, a common clamp-on current detection device consists of a clamp-on measuring device and a wrench that controls its opening and closing. During use, the wrench is used to open the measuring device, then the circuit being measured is placed into the measuring device, and the device is closed for measurement. The measuring device displays the detected current value on a display. This current detection device is not only cumbersome to operate but also requires the operator to be in close proximity to the circuit being measured. This poses a safety hazard to the operator. Furthermore, if the circuit being measured is located on rails or at a relatively high position, the operator must bend over or climb a ladder to perform the test, making it inconvenient to use. Utility Model Content

[0004] In view of this, the present invention aims to propose a current detection caliper to solve the problem that the clamp ammeter in the prior art requires the operator to be close to the measured line, which easily causes safety hazards. For the measured line located on the rails or at a relatively high position, the operator needs to bend over or climb a ladder, which is inconvenient to operate.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the utility model is achieved as follows:

[0006] A current detection caliper, comprising an insulating handle, a connecting plate, a current detector, a telescopic assembly, and a detection assembly, wherein the insulating handle, the connecting plate, the current detector, the telescopic assembly, and the detection assembly are arranged in sequence, and the detection assembly is electrically connected to the current detector;

[0007] The detection assembly includes a supporting assembly, a caliper assembly, and a clamping assembly. The bottom of the supporting assembly is connected to the telescopic assembly, and the caliper assembly and the clamping assembly are arranged inside the supporting assembly in sequence from top to bottom.

[0008] Furthermore, the supporting assembly includes a caliper seat, a first column, a second column, a third column, and a fourth column, and the first column, the second column, the third column, and the fourth column are arranged at the top four corners of the caliper seat;

[0009] A first sliding groove is provided on a side where the first column and the second column are close to each other, and a second sliding groove is provided on a side where the third column and the fourth column are close to each other.

[0010] Furthermore, the caliper assembly includes a first caliper and a second caliper. The first caliper and the second caliper are arc-shaped structures arranged opposite to each other. Bend portions arranged in directions away from each other are provided above the first caliper and the second caliper.

[0011] Furthermore, the bottom of the first caliper is rotatably arranged between the first column and the second column via a first hinge shaft, and a first torsion spring and a second torsion spring are provided on the first hinge shaft, and the first torsion spring and the second torsion spring are arranged on both sides of the first caliper;

[0012] One end of the first torsion spring is connected to the first column, and the other end of the first torsion spring is connected to the first caliper. One end of the second torsion spring is connected to the second column, and the other end of the second torsion spring is connected to the first caliper.

[0013] Furthermore, the bottom of the second caliper is rotatably arranged between the third column and the fourth column via a second hinge shaft, and a third torsion spring and a fourth torsion spring are provided on the second hinge shaft, and the third torsion spring and the fourth torsion spring are arranged on both sides of the second caliper;

[0014] One end of the third torsion spring is connected to the third column, and the other end of the third torsion spring is connected to the second caliper. One end of the fourth torsion spring is connected to the fourth column, and the other end of the fourth torsion spring is connected to the second caliper.

[0015] Align the bent parts of the first caliper and the second caliper with the circuit under test, push the current detection caliper, and under the squeezing of the circuit under test, the first caliper and the second caliper rotate in the direction away from each other through the first hinge shaft and the second hinge shaft, so that the circuit under test enters the detection area surrounded by the first caliper, the second caliper and the clamping assembly. Under the reaction force of the first torsion spring, the second torsion spring, the third torsion spring and the fourth torsion spring, the first caliper and the second caliper rotate in the direction towards each other until they contact each other.

[0016] Furthermore, the clamping assembly includes an arc-shaped plate, several springs, a first connecting block, a second connecting block, a first slider, and a second slider. One end of the arc-shaped plate is provided with a first slider through the first connecting block, and the other end of the arc-shaped plate is provided with a second slider through the second connecting block. Several springs are evenly arranged below the arc-shaped plate.

[0017] Furthermore, the bottoms of the plurality of springs are arranged on the caliper seat, and the tops of the plurality of springs are connected to the bottom of the arc-shaped plate.

[0018] Furthermore, the first slider is vertically arranged at one end of the arc-shaped plate through a first connecting block, and the second slider is vertically arranged at the other end of the arc-shaped plate through a second connecting block;

[0019] Both ends of the first sliding block are arranged in the first sliding grooves of the first column and the second column;

[0020] Both ends of the second sliding block are arranged in the second sliding grooves of the third column and the fourth column.

[0021] When the circuit under test enters the detection area surrounded by the first caliper, the second caliper, and the curved plate, the pressure of the circuit under test exerts a downward force on the curved plate, compressing the spring at the bottom of the curved plate. The spring's rebound force then exerts an upward force on the curved plate, causing the curved plate to clamp the circuit under test. The system is also suitable for circuits of different diameters. The rotational force of the first, second, third, and fourth torsion springs is greater than the rebound force of the springs, so that when the curved plate clamps the circuit under test upward, the first and second calipers will not separate.

[0022] The first sliding block slides in the first sliding groove, and the second sliding block slides in the second sliding groove, which can guide the upward or downward movement of the curved plate.

[0023] Furthermore, the telescopic assembly includes a telescopic outer tube and a telescopic inner tube. The telescopic outer tube is sleeved on the outside of the telescopic inner tube. The end of the telescopic inner tube away from the telescopic outer tube is connected to the bottom of the caliper seat, and the end of the telescopic outer tube away from the telescopic inner tube is connected to the top of the current detector.

[0024] Furthermore, a bolt is provided at one end of the telescopic outer tube close to the telescopic inner tube, and the bolt abuts against the telescopic inner tube.

[0025] The telescopic inner tube slides inside the telescopic outer tube, thereby achieving a telescopic effect. The telescopic inner tube is extended to the appropriate position, and the bolt is rotated to abut the telescopic inner tube with the bolt, thereby fixing the telescopic inner tube. When inspecting the line on the rail, the operator does not need to bend over for inspection. When inspecting the line at a higher position, the operator does not need to climb a ladder, thereby increasing work efficiency. In addition, the operator's hand is on the insulated grip, which is a certain safe distance away from the line being tested, eliminating safety hazards during close contact.

[0026] Compared with the prior art, the current detection caliper described in the present invention has the following advantages:

[0027] (1) The caliper assembly described in the present invention can be rotated clockwise or counterclockwise through the hinge shaft. When the operator pushes or pulls the current detection caliper, the first caliper and the second caliper can be separated, allowing the measured circuit to enter or exit the detection assembly. The setting of the torsion spring can automatically close the first caliper and the second caliper.

[0028] (2) The arc-shaped plate described in the present invention can move up and down on the caliper seat to clamp the circuit under test, and can adjust the distance between the first caliper and the second caliper to be suitable for circuits under test with different diameters.

[0029] (3) The telescopic assembly described in the present invention can adjust the distance between the detection assembly and the insulating handle, thereby adjusting the distance between the operator and the line to be tested. When it is necessary to detect the line on the rail, the operator does not need to bend down for detection. When it is necessary to detect the line at a higher position, the operator does not need to climb a ladder, thereby increasing work efficiency. Moreover, the operator's hand is on the insulating handle, which is at a certain safe distance from the line to be tested, eliminating the safety hazards during close contact. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0031] Figure 1 This is an overall schematic diagram of a current detection caliper according to an embodiment of the present utility model;

[0032] Figure 2 This is a side view schematic diagram of a current detection caliper detection assembly according to an embodiment of the present utility model;

[0033] Figure 3 This is a top view schematic diagram of a current detection caliper clamping assembly according to an embodiment of the present utility model.

[0034] Description of reference numerals:

[0035] 1. Insulated handle; 2. Connecting plate; 3. Current detector; 4. Caliper seat; 5. First column; 6. Second column; 7. Third column; 8. Fourth column; 9. First slide; 10. Second slide; 11. First caliper; 12. Second caliper; 13. First hinge shaft; 14. First torsion spring; 15. Second torsion spring; 16. Arc plate; 17. Spring; 18. First connecting block; 19. Second connecting block; 20. First slider; 21. Second slider; 22. Telescopic outer tube; 23. Telescopic inner tube; 24. Bolt. DETAILED DESCRIPTION

[0036] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0037] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0038] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0039] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0040] like Figures 1 to 3 As shown, a current detection caliper is characterized by comprising an insulating handle 1, a connecting plate 2, a current detector 3, a telescopic assembly, and a detection assembly, wherein the insulating handle 1, the connecting plate 2, the current detector 3, the telescopic assembly, and the detection assembly are arranged in sequence, and the detection assembly is electrically connected to the current detector 3;

[0041] The detection assembly includes a supporting assembly, a caliper assembly, and a clamping assembly. The bottom of the supporting assembly is connected to the telescopic assembly, and the caliper assembly and the clamping assembly are arranged inside the supporting assembly in sequence from top to bottom.

[0042] The supporting assembly includes a caliper seat 4, a first column 5, a second column 6, a third column 7, and a fourth column 8. The first column 5, the second column 6, the third column 7, and the fourth column 8 are arranged at the top four corners of the caliper seat 4;

[0043] A first sliding groove 9 is provided on the side where the first column 5 and the second column 6 are close to each other, and a second sliding groove 10 is provided on the side where the third column 7 and the fourth column 8 are close to each other.

[0044] The caliper assembly includes a first caliper 11 and a second caliper 12 . The first caliper 11 and the second caliper 12 are arc-shaped structures arranged opposite to each other. Bend portions arranged in a direction away from each other are provided above the first caliper 11 and the second caliper 12 .

[0045] The bottom of the first caliper 11 is rotatably arranged between the first column 5 and the second column 6 via a first hinge shaft 13. A first torsion spring 14 and a second torsion spring 15 are provided on the first hinge shaft 13. The first torsion spring 14 and the second torsion spring 15 are arranged on both sides of the first caliper 11.

[0046] One end of the first torsion spring 14 is connected to the first column 5 , and the other end of the first torsion spring 14 is connected to the first caliper 11 . One end of the second torsion spring 15 is connected to the second column 6 , and the other end of the second torsion spring 15 is connected to the first caliper 11 .

[0047] The bottom of the second caliper 12 is rotatably arranged between the third column 7 and the fourth column 8 via a second hinge shaft, and a third torsion spring and a fourth torsion spring are provided on the second hinge shaft. The third torsion spring and the fourth torsion spring are arranged on both sides of the second caliper 12;

[0048] One end of the third torsion spring is connected to the third column 7 , and the other end of the third torsion spring is connected to the second caliper 12 . One end of the fourth torsion spring is connected to the fourth column 8 , and the other end of the fourth torsion spring is connected to the second caliper 12 .

[0049] Align the bent parts of the first caliper 11 and the second caliper 12 with the circuit under test, and push the current detection caliper. Under the squeezing of the circuit under test, the first caliper 11 and the second caliper 12 rotate in the direction away from each other through the first hinge shaft 13 and the second hinge shaft, so that the circuit under test enters the detection area surrounded by the first caliper 11, the second caliper 12 and the clamping assembly. Under the reaction force of the first torsion spring 14, the second torsion spring 15, the third torsion spring and the fourth torsion spring, the first caliper 11 and the second caliper 12 rotate in the direction towards each other until they contact each other.

[0050] The clamping assembly includes an arc-shaped plate 16, several springs 17, a first connecting block 18, a second connecting block 19, a first slider 20, and a second slider 21. One end of the arc-shaped plate 16 is provided with a first slider 20 through the first connecting block 18, and the other end of the arc-shaped plate 16 is provided with a second slider 21 through the second connecting block 19. Several springs 17 are evenly arranged below the arc-shaped plate 16.

[0051] The bottoms of the plurality of springs 17 are arranged on the caliper seat 4 , and the tops of the plurality of springs 17 are connected to the bottom of the arc-shaped plate 16 .

[0052] The first slider 20 is vertically arranged at one end of the arc-shaped plate 16 through the first connecting block 18, and the second slider 21 is vertically arranged at the other end of the arc-shaped plate 16 through the second connecting block 19;

[0053] Both ends of the first slider 20 are disposed in the first sliding grooves 9 of the first column 5 and the second column 6;

[0054] Both ends of the second sliding block 21 are arranged in the second sliding grooves 10 of the third column 7 and the fourth column 8 .

[0055] After the circuit under test enters the detection area surrounded by the first caliper 11, the second caliper 12, and the curved plate 16, the compression of the circuit under test generates a downward force on the curved plate 16, compressing the spring 17 at the bottom of the curved plate 16. The rebound force of the spring 17 generates an upward force on the curved plate 16, thereby causing the curved plate 16 to clamp the circuit under test and is suitable for circuits of different diameters. The rotational force of the first torsion spring 14, the second torsion spring 15, the third torsion spring, and the fourth torsion spring is greater than the rebound force of the spring 17, so that when the curved plate 16 clamps the circuit under test upward, the first caliper 11 and the second caliper 12 will not separate.

[0056] The first slider 20 slides in the first sliding groove 9 , and the second slider 21 slides in the second sliding groove 10 , thereby guiding the upward or downward movement of the arc-shaped plate 16 .

[0057] The telescopic assembly includes a telescopic outer tube 22 and a telescopic inner tube 23. The telescopic outer tube 22 is sleeved on the outside of the telescopic inner tube 23. The end of the telescopic inner tube 23 away from the telescopic outer tube 22 is connected to the bottom of the caliper seat 4, and the end of the telescopic outer tube 22 away from the telescopic inner tube 23 is connected to the top of the current detector 3.

[0058] A bolt 24 is provided at one end of the telescopic outer tube 22 close to the telescopic inner tube 23 , and the bolt 24 abuts against the telescopic inner tube 23 .

[0059] The telescopic inner tube 23 slides in the telescopic outer tube 22, thereby playing a telescopic role. The telescopic inner tube 23 is extended to a suitable position, and the bolt 24 is rotated. The bolt 24 is used to abut the telescopic inner tube 23, thereby fixing the telescopic inner tube 23. When inspecting the line on the rail, the operator does not need to bend down for inspection. When inspecting the line at a higher position, the operator does not need to climb a ladder, thereby increasing work efficiency. In addition, the operator's hand is on the insulating grip 1, which is at a certain safe distance from the line being tested, eliminating the safety hazards during close contact.

[0060] In a specific implementation, the telescopic assembly is adjusted according to the distance between the operator's hand and the circuit under test, the telescopic inner tube 23 is extended to a suitable position, the bolt 24 is rotated, and the telescopic inner tube 23 is abutted by the bolt 24, thereby fixing the telescopic inner tube 23. The bent parts of the first caliper 11 and the second caliper 12 are aligned with the circuit under test, and the current detection caliper is pushed. Under the pressure of the circuit under test, the first caliper 11 and the second caliper 12 rotate in a direction away from each other through the first hinge shaft 13 and the second hinge shaft, so that the circuit under test enters the detection area surrounded by the first caliper 11, the second caliper 12 and the arc plate 16. Due to the pressure of the circuit under test, the current detection caliper The arc plate 16 generates a downward force, causing the arc plate 16 to slide downward along the first slide groove 9 and the second slide groove 10. The spring 17 at the bottom of the arc plate 16 is compressed, and the rebound force of the spring 17 can generate an upward force on the arc plate 16, so that the arc plate 16 has a clamping effect on the circuit under test. Due to the rotational force of the first torsion spring 14, the second torsion spring 15, the third torsion spring, and the fourth torsion spring, after the circuit under test enters the first caliper 12 and the second caliper 13, the first caliper 12 and the second caliper 13 rotate in a direction close to each other, completing automatic closure, thereby completing the clamping of the circuit under test, and recording the readings through the current detector 3.

[0061] After the readings are recorded, the operator pulls the current detection caliper. Under the squeezing of the measured circuit, the first caliper 11 and the second caliper 12 rotate in the direction away from each other through the first hinge shaft 13 and the second hinge shaft, so that the measured circuit is disengaged from the inside of the first caliper 11 and the second caliper 12. After the measured circuit is disengaged, the first caliper 11 and the second caliper 12 rotate in the direction close to each other through the first hinge shaft 13 and the second hinge shaft, completing automatic closure, thereby completing the detection. The bolt 24 is loosened, and the telescopic inner tube 23 is retracted into the telescopic outer tube 22 for storage.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A current detection caliper, characterized in that: The invention comprises an insulating handle (1), a connecting plate (2), a current detector (3), a telescopic component, and a detection component, wherein the insulating handle (1), the connecting plate (2), the current detector (3), the telescopic component, and the detection component are arranged in sequence, and the detection component is electrically connected to the current detector (3); The detection assembly includes a supporting assembly, a caliper assembly, and a clamping assembly. The bottom of the supporting assembly is connected to the telescopic assembly, and the caliper assembly and the clamping assembly are arranged inside the supporting assembly in sequence from top to bottom.

2. A current detection caliper according to claim 1, characterized in that: The supporting assembly comprises a caliper seat (4), a first column (5), a second column (6), a third column (7), and a fourth column (8), wherein the first column (5), the second column (6), the third column (7), and the fourth column (8) are arranged at the top four corners of the caliper seat (4); A first sliding groove (9) is provided on the side where the first column (5) and the second column (6) are close to each other, and a second sliding groove (10) is provided on the side where the third column (7) and the fourth column (8) are close to each other.

3. The current detection caliper according to claim 1, characterized in that: The caliper assembly comprises a first caliper (11) and a second caliper (12); the first caliper (11) and the second caliper (12) are arc-shaped structures arranged opposite to each other; and bending portions arranged in directions away from each other are provided above the first caliper (11) and the second caliper (12).

4. The current detection caliper according to claim 3, characterized in that: The bottom of the first caliper (11) is rotatably arranged between the first column (5) and the second column (6) via a first hinge shaft (13); a first torsion spring (14) and a second torsion spring (15) are provided on the first hinge shaft (13); and the first torsion spring (14) and the second torsion spring (15) are arranged on both sides of the first caliper (11); One end of the first torsion spring (14) is connected to the first column (5), and the other end of the first torsion spring (14) is connected to the first caliper (11); one end of the second torsion spring (15) is connected to the second column (6), and the other end of the second torsion spring (15) is connected to the first caliper (11).

5. The current detection caliper according to claim 3, characterized in that: The bottom of the second caliper (12) is rotatably arranged between the third column (7) and the fourth column (8) via a second hinge shaft, and a third torsion spring and a fourth torsion spring are provided on the second hinge shaft. The third torsion spring and the fourth torsion spring are arranged on both sides of the second caliper (12); One end of the third torsion spring is connected to the third column (7), and the other end of the third torsion spring is connected to the second caliper (12); one end of the fourth torsion spring is connected to the fourth column (8), and the other end of the fourth torsion spring is connected to the second caliper (12).

6. The current detection caliper according to claim 1, characterized in that: The clamping assembly comprises an arc-shaped plate (16), a plurality of springs (17), a first connecting block (18), a second connecting block (19), a first slider (20), and a second slider (21); one end of the arc-shaped plate (16) is provided with the first slider (20) through the first connecting block (18); the other end of the arc-shaped plate (16) is provided with the second slider (21) through the second connecting block (19); and the plurality of springs (17) are evenly arranged below the arc-shaped plate (16).

7. The current detection caliper according to claim 6, characterized in that: The bottoms of the plurality of springs (17) are arranged on the caliper seat (4), and the tops of the plurality of springs (17) are connected to the bottom of the arc-shaped plate (16).

8. The current detection caliper according to claim 6, characterized in that: The first slider (20) is vertically arranged at one end of the arc-shaped plate (16) through a first connecting block (18), and the second slider (21) is vertically arranged at the other end of the arc-shaped plate (16) through a second connecting block (19); Both ends of the first sliding block (20) are arranged in the first sliding grooves (9) of the first column (5) and the second column (6); Both ends of the second sliding block (21) are arranged in the second sliding grooves (10) of the third column (7) and the fourth column (8).

9. The current detection caliper according to claim 1, characterized in that: The telescopic assembly comprises a telescopic outer tube (22) and a telescopic inner tube (23), wherein the telescopic outer tube (22) is sleeved on the outside of the telescopic inner tube (23), one end of the telescopic inner tube (23) away from the telescopic outer tube (22) is connected to the bottom of the caliper seat (4), and one end of the telescopic outer tube (22) away from the telescopic inner tube (23) is connected to the top of the current detector (3).

10. The current detection caliper according to claim 9, characterized in that: A bolt (24) is provided at one end of the telescopic outer tube (22) close to the telescopic inner tube (23), and the bolt (24) abuts against the telescopic inner tube (23).

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