Circuit breaker contact testing tool

Abstract

The application belongs to the technical field of circuit testing, and discloses a circuit breaker contact testing tool for testing a circuit breaker contact, comprising a rack, an adjusting mechanism and two testing assemblies; the adjusting mechanism comprises two first adjusting assemblies, the first adjusting assemblies are movably connected with the rack, the interval of the two first adjusting assemblies along a first straight line direction is adjustable, one second adjusting assembly is arranged on each first adjusting assembly, the second adjusting assemblies are movably connected with the first adjusting assemblies, the interval of the two second adjusting assemblies along a second straight line direction is adjustable, and the first straight line is parallel to the second straight line; one testing assembly is arranged on each second adjusting assembly, the testing assemblies are rotatably connected with the second adjusting assemblies, the two testing assemblies can be arranged to form a testing ring, the testing ring can abut against the inner ring of the circuit breaker contact to perform testing, so that the testing assemblies are suitable for different sizes of the quincunx contact, and the staff can avoid carrying multiple sizes of traditional testing tools, thereby increasing work efficiency.

Description

Technical Field

[0001] This invention relates to the field of circuit testing technology, and more particularly to a circuit breaker contact testing tool. Background Technology

[0002] Indoor high-voltage vacuum circuit breakers are important devices in modern power grid systems to protect the normal operation of power grid equipment. Testing the loop resistance of indoor high-voltage vacuum circuit breakers is a necessary task to ensure the normal operation of power grid equipment.

[0003] Patent 201410566008.4 discloses a circuit breaker loop resistance test clamp. Workers usually use this special test clamp to test the loop resistance of the plum blossom contacts in indoor high-voltage vacuum circuit breakers. However, the plum blossom contacts in indoor high-voltage vacuum circuit breakers come in various models, and different models have different sizes. The opening angle of the two clamp arms of this clamp is small, and different sizes of clamps are required to test the plum blossom contacts of different models and sizes. The testing efficiency is low, and multiple tools of different sizes need to be carried, which increases the difficulty of the work. Summary of the Invention

[0004] The purpose of this invention is to provide a circuit breaker contact testing tool to solve the technical problem that multiple testing tools of different sizes are required to complete the circuit resistance test of different sized clover contacts, resulting in low testing efficiency and high work difficulty.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A circuit breaker contact testing tool for testing circuit breaker contacts, comprising:

[0007] frame;

[0008] The adjustment mechanism includes two first adjustment components, which are movably connected to the frame. The distance between the two first adjustment components along a first straight line is adjustable. Each first adjustment component is provided with a second adjustment component, which is movably connected to the first adjustment component. The distance between the two second adjustment components along a second straight line is adjustable. The first straight line is parallel to the second straight line.

[0009] Two test components are provided, one of which is provided on each of the second adjustment components. The test components are rotatably connected to the second adjustment components. The two test components can be arranged to form a test ring, which can abut against the inner ring of the circuit breaker contact for testing.

[0010] Preferably, the frame includes a guide rod that extends along the first straight line direction, and both first adjustment components are slidably connected to the guide rod. The first adjustment components can be fixed to the guide rod by a locking component.

[0011] Preferably, the locking assembly includes a first adjusting gear and two adjusting racks. The first adjusting gear is rotatably connected to the guide rod, each adjusting rack is connected to one of the first adjusting assemblies, and the two adjusting racks are distributed on both sides of the first adjusting gear and mesh with the first adjusting gear.

[0012] Preferably, one end of the first adjusting component is provided with a first limiting groove, which extends along the second straight line direction. The second adjusting component includes a moving part and a connecting part. One end of the moving part is connected to the connecting part, and the other end of the moving part is slidably connected to the first limiting groove. The moving part can move within the first limiting groove.

[0013] Preferably, an adjusting screw is provided in the first limiting groove, the adjusting screw is rotatably connected to the first limiting groove, the moving part is threadedly connected to the adjusting screw, and the adjusting screw can rotate along its own axis to drive the moving part to move along the axis of the adjusting screw.

[0014] Preferably, the test assembly includes a test head, which includes a test section and a rotating section. The rotating section is rotatably connected to the second adjustment assembly via the rotating assembly, and the test sections of the two test assemblies can be arranged to form the test ring.

[0015] Preferably, each of the test components includes two test heads, and the rotating component includes a second adjusting gear and a first auxiliary gear. The second adjusting gear is rotatably connected to the second adjusting component, and a first auxiliary gear is fixedly connected to each of the test heads. The two first auxiliary gears mesh with each other, and one of the first auxiliary gears meshes with the second adjusting gear.

[0016] Preferably, the rotating assembly includes a second adjusting gear and a first auxiliary gear. The second adjusting gear is fixedly connected to the second adjusting assembly, and the first auxiliary gear meshes with the second adjusting gear. The first auxiliary gear can rotate around its own axis and revolve around the second adjusting gear. The rotating part is rotatably connected to the first auxiliary gear and can be locked by a locking structure.

[0017] Preferably, the locking structure includes a plurality of first protrusions, the first protrusions being connected to the first auxiliary gear, and a locking groove being formed between adjacent first protrusions. A second protrusion is provided at one end of the rotating part near the locking structure, and the second protrusion can be inserted into the locking groove to lock the rotating part.

[0018] Preferably, each of the two first adjustment components has a wiring portion at the end furthest from the second adjustment component.

[0019] Beneficial effects: The circuit breaker contact testing tool includes a frame, an adjustment mechanism, and testing components. The adjustment mechanism includes a first adjustment component and a second adjustment component. The two first adjustment components serve as the primary adjustment of the testing components, allowing for rapid changes in the spacing between the two testing components in the first linear direction. The two second adjustment components serve as the secondary adjustment of the testing components, allowing for secondary fine-tuning of the spacing between the testing components in the second linear direction, parallel to the first linear direction. Simultaneously, the testing components are rotatably connected to the second adjustment components. During rotation, the two testing components can be adjusted to abut against the inner rings of contacts with different diameters, thus enabling tertiary adjustment. Through these three adjustments, the testing components can adapt to different sizes of staggered contacts, making the circuit breaker contact testing tool more versatile. This avoids the need for workers to carry multiple sizes of traditional testing tools, reducing work difficulty and increasing work efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the circuit breaker contact testing tool provided in Embodiment 1 of the present invention;

[0021] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0022] Figure 3 This is a front view of the circuit breaker contact testing tool provided in Embodiment 1 of the present invention;

[0023] Figure 4 This is a top view of the circuit breaker contact testing tool provided in Embodiment 1 of the present invention;

[0024] Figure 5 This is a front view of the circuit breaker contact testing tool provided in Embodiment 2 of the present invention;

[0025] Figure 6 This is a schematic diagram of the cooperation between the rotating part and the locking structure provided in Embodiment 2 of the present invention.

[0026] In the picture:

[0027] 1. Frame; 11. Guide rod;

[0028] 2. Adjustment mechanism; 21. First adjustment component; 211. First limiting groove; 22. Second adjustment component; 221. Moving part; 222. Connecting part; 2221. Second limiting groove; 223. Adjustment screw; 224. Second adjustment knob; 23. Wiring part; 24. Handheld part;

[0029] 3. Test component; 31. Test head; 311. Test section; 312. Rotating section; 3121. Second protrusion;

[0030] 4. Locking assembly; 41. First adjusting gear; 42. Adjusting rack; 43. First adjusting knob;

[0031] 5. Rotating assembly; 51. Second adjusting gear; 52. First auxiliary gear; 53. Third adjusting knob;

[0032] 6. Locking structure; 61. First protrusion; 62. Locking groove. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0034] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0035] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0037] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0038] Example 1

[0039] See Figure 1-4 This embodiment provides a circuit breaker contact testing tool for testing circuit breaker contacts. It includes a frame 1, an adjustment mechanism 2, and two testing components 3. The frame 1 is used by the operator to hold and support the adjustment mechanism 2 and the two testing components 3. The adjustment mechanism 2 is used to adjust the position of the two testing components 3 to accommodate different sizes of staggered contacts. The two testing components 3 can rotate to change their position, further adapting to different sizes of staggered contacts, making the circuit breaker contact testing tool more versatile. This avoids the need for operators to carry traditional testing tools of various sizes, reducing work difficulty and increasing work efficiency.

[0040] The adjustment mechanism 2 includes two first adjustment components 21, which are movably connected to the frame 1. The distance between the two first adjustment components 21 along a first straight line is adjustable. Each first adjustment component 21 is provided with a second adjustment component 22, which is movably connected to the first adjustment component 21. The distance between the two second adjustment components 22 along a second straight line is adjustable. The first and second straight lines are parallel. Through two-stage adjustment, the circuit breaker contact testing tool can quickly and accurately align with the inner ring of the circuit breaker contact. Specifically, the adjustment range of the distance between the two first adjustment components 21 is relatively large for rapid adjustment, while the adjustment range of the distance between the two second adjustment components 22 is relatively small for fine-tuning.

[0041] Each second adjustment component 22 is provided with a test component 3, which is rotatably connected to the second adjustment component 22. The two test components 3 can be arranged to form a test ring, which can abut against the inner ring of the circuit breaker contact for testing. The position of the test component 3 can be adjusted by rotating the test component 3, so that the test ring can fit more closely to the inner ring of the circuit breaker contact, reducing the generation of errors. Furthermore, the size of the test ring can be changed by rotating the test component 3 to adapt to circuit breaker contacts of different sizes.

[0042] The frame 1 includes a guide rod 11, which extends along a first straight line. Two first adjustment components 21 are slidably connected to the guide rod 11. The first adjustment components 21 can be fixed to the guide rod 11 by locking components 4, so that the two first adjustment components 21 can slide smoothly on the guide rod 11 and be fixed in the required position.

[0043] In this embodiment, the locking assembly 4 adopts a gear and rack mechanism. Specifically, the locking assembly 4 includes a first adjusting gear 41 and two adjusting racks 42. The first adjusting gear 41 is rotatably connected to the guide rod 11, and each adjusting rack 42 is connected to a first adjusting assembly 21. The two adjusting racks 42 are distributed on both sides of the first adjusting gear 41 and mesh with the first adjusting gear 41. When the first adjusting gear 41 rotates, the two adjusting racks 42 can move linearly, so that the two first adjusting assemblies 21 can move simultaneously towards or away from each other and lock at the required position, reducing the difficulty of work and increasing work efficiency.

[0044] Furthermore, the first adjusting gear 41 is connected to a first adjusting knob 43, which is fixedly connected to the first adjusting gear 41. The first adjusting knob 43 can drive the first adjusting gear 41 to rotate so that the distance between the two first adjusting components 21 changes, making it convenient for the operator to operate.

[0045] One end of the first adjusting component 21 is provided with a first limiting groove 212, which extends along the second straight line direction. The second adjusting component 22 includes a moving part 221 and a connecting part 222. One end of the moving part 221 is connected to the connecting part 222, and the other end of the moving part 221 is slidably connected to the first limiting groove 212. The moving part 221 can move within the first limiting groove 212 to change the distance between the two second adjusting components 22, and further precisely fit the inner ring of circuit breaker contacts of different sizes.

[0046] Specifically, an adjusting screw 223 is provided in the first limiting groove 212. The adjusting screw 223 is rotatably connected to the first limiting groove 212. The moving part 221 is threadedly connected to the adjusting screw 223. The adjusting screw 223 can rotate along its own axis to drive the moving part 221 to move along the axis of the adjusting screw 223, so that the second adjusting component 22 can move within a small range for secondary precise adjustment.

[0047] There is no specific limitation on the screw pitch here. It should be set to a smaller pitch according to actual needs so that the second adjustment component 22 can move more slowly to achieve the purpose of precise adjustment.

[0048] Furthermore, a second adjustment knob 224 is provided at one end of the screw that extends out of the first limiting groove 212. The second adjustment knob 224 can drive the screw to rotate to adjust the position of the second adjustment component 22 in the first limiting groove 212, thereby facilitating the operator to conveniently and accurately adjust the distance between the two second adjustment components 22.

[0049] Specifically, both the first adjustment component 21 and the second adjustment component 22 are made of conductive material. The first adjustment component 21 is L-shaped, with one end sleeved on the outside of the guide rod 11 and slidably connected to it. A limiting groove is provided at the other end of the first adjustment component 21, connecting the first adjustment component 21 and the second adjustment component 22. The second adjustment component 22 can move with the first adjustment component 21, allowing for fine-tuning of the spacing after the first adjustment component 21 has quickly adjusted it. The moving part 221 of the second adjustment component 22 is threadedly connected to the adjusting screw 223 in the first limiting groove 212. When the adjusting screw 223 rotates, the second adjustment component 22 can move within the range of the limiting groove. The connecting part 222 is perpendicular to the moving part 221, facilitating the setting of the test component 3.

[0050] Test assembly 3 includes test head 31, which includes test section 311 and rotating section 312. Rotating section 312 is rotatably connected to second adjustment assembly 22 via rotating assembly 5. The test sections 311 of the two test assemblies 3 can be arranged to form a test ring. Rotation of rotating section 312 can drive test section 311 to rotate to change the size of the test ring, so that the test ring can fit more closely to the inner ring of the circuit breaker contact, ensuring the success rate of the test.

[0051] There is no limit to the number of test heads 31 for each test component 3. The number can be set according to actual needs. In this embodiment, two test heads 31 are set for each test component 3, which can ensure the accuracy of the test and allow the staff to make adjustments quickly.

[0052] Specifically, each test assembly 3 includes two test heads 31, and the rotating assembly 5 includes a second adjusting gear 51 and a first auxiliary gear 52. The second adjusting gear 51 is rotatably connected to the second adjusting assembly 22, and a first auxiliary gear 52 is fixedly connected to each test head 31. The two first auxiliary gears 52 mesh with each other, and one of the first auxiliary gears 52 meshes with the second adjusting gear 51. When the second adjusting gear 51 rotates around its own axis, the two first auxiliary gears 52 will rotate in opposite directions around their own axes, so that the test ring can change size according to the diameter of the circuit breaker contact.

[0053] Specifically, when two test heads 31 are set in the test assembly 3, it should be ensured that the two test heads 31 are not in the same plane. This can ensure the maximum rotation range of the test heads 31 and avoid interference between the rotating heads, which would affect the testing of circuit breaker contacts of certain sizes.

[0054] Specifically, the test section 311 is arc-shaped, which can increase the contact area with the inner circular ring of the circuit breaker contact and ensure the accuracy of the circuit test results.

[0055] Furthermore, a third adjustment knob 53 is provided on the side of the connection part 222 away from the test component 3. The third adjustment knob 53 is fixedly connected to the third adjustment gear. The third adjustment gear can drive the second adjustment gear 51 to rotate to change the size of the test ring, so that the test head 31 can be inserted into the inner ring of the circuit breaker contact and abut against it. Then the angle of the test head 31 can be adjusted so that the test head 31 can fit better against the inner ring of the circuit breaker contact.

[0056] Each of the two first adjustment components 21 has a wiring part 23 at the end away from the second adjustment component 22. The wiring part 23 is connected to the first adjustment component 21 by bolts. The wiring part 23 can be connected to the wire used for loop testing.

[0057] A handheld part 24 is also provided at the other end of the wiring section 23. When the device is close to the wall, it may be inconvenient for the staff to hold the frame 1. The handheld part 24 is located at the end away from the wall, which makes it convenient for the staff to hold and operate the circuit breaker contact testing tool.

[0058] The general usage process of the circuit breaker contact testing tool provided in this embodiment is as follows:

[0059] Based on the approximate diameter of the circuit breaker contacts, the first adjustment knob 43 is rotated to quickly adjust the spacing between the first adjustment components 21.

[0060] When the distance between the first adjusting components 21 is slightly smaller than the diameter of the circuit breaker contacts, the second adjusting knobs 224 on the two first adjusting components 21 are adjusted respectively to make a precise two-stage adjustment of the distance between the second adjusting components 22.

[0061] When the spacing between the second adjustment components 22 is adjusted so that the test head 31 can abut against the inner ring of the circuit breaker, the test head 31 is inserted into the inner ring of the circuit breaker contact. The third adjustment knobs 53 on the two second adjustment components 22 are adjusted respectively to rotate the test head 31 to change the size of the test ring, thereby performing three-level adjustment. This allows the test head 31 to fit more precisely against the inner ring of the circuit breaker contact, maximizing the contact area and ensuring the accuracy of the test results.

[0062] Insert the test wire into the wiring part 23 to perform a circuit test on the circuit breaker contacts.

[0063] Example 2

[0064] This embodiment provides a cable combing device, wherein components that are the same as or corresponding to those in Embodiment 1 are labeled with the same reference numerals as those in Embodiment 1. For simplicity, only the differences between Embodiment 2 and Embodiment 1 are described. The difference lies in the fact that, referring to... Figure 4 The rotating assembly 5 includes a second adjusting gear 51 and a first auxiliary gear 52. The second adjusting gear 51 is fixedly connected to the second adjusting assembly 22. The first auxiliary gear 52 meshes with the second adjusting gear 51. The first auxiliary gear 52 can rotate around its own axis and can revolve around the second adjusting gear 51. The rotating part 312 is rotatably connected to the first auxiliary gear 52 and can be locked by the locking structure 6, so that the test ring formed by the multiple test heads 31 can always maintain an approximate circle, so that the test ring can fit more accurately with the inner ring of the circuit breaker contact.

[0065] There is no limit to the number of test heads 31 for each test component 3. The number can be set according to actual needs. In this embodiment, two test heads 31 are set for each test component 3, which can ensure the accuracy of the test and allow the staff to make adjustments quickly.

[0066] refer to Figure 5 The locking structure 6 includes multiple first protrusions 61, which are connected to the first auxiliary gear 52. A locking groove 62 is formed between adjacent first protrusions 61. A second protrusion 3121 is provided at one end of the rotating part 312 near the locking structure 6. The second protrusion 3121 can be inserted into the locking groove 62 and lock the rotating part 312, so that the test part 311 can be adjusted to a suitable direction as needed, so as to maximize the contact area between the test head 31 and the inner ring of the circuit breaker contact and ensure the accuracy of the circuit test.

[0067] Specifically, the connecting part 222 is provided with two opposing second limiting grooves 2221, which are semi-circular. The first auxiliary gear 52 is provided with an adjusting rod, which is slidably connected to the second limiting groove 2221, so as to facilitate the operation of the test head 31 by the staff.

[0068] The general usage process of the circuit breaker contact testing tool provided in this embodiment is as follows:

[0069] Based on the approximate diameter of the circuit breaker contacts, the first adjustment knob 43 is rotated to quickly adjust the spacing between the first adjustment components 21.

[0070] When the distance between the first adjusting components 21 is slightly smaller than the diameter of the circuit breaker contacts, the second adjusting knobs 224 on the two first adjusting components 21 are adjusted respectively to make a precise two-stage adjustment of the distance between the second adjusting components 22.

[0071] When the spacing between the second adjustment components 22 is adjusted to allow the test head 31 to abut against the inner ring of the circuit breaker, the test head 31 is rotated around the axis of the rotating part 312 to adjust the position of the test part 311, so that the first protrusion 61 is locked in a locking groove 62 to ensure that the adjusted test head 31 no longer rotates.

[0072] Insert the test head 31 into the inner ring of the circuit breaker contact, and adjust the adjusting rods on the two second adjusting components 22 respectively, so that the first auxiliary gear 52 rotates around the second adjusting gear 51 to perform three-level adjustment, so that the test head 31 can fit more precisely into the inner ring of the circuit breaker contact, maximize the contact area, and ensure the accuracy of the test results.

[0073] Insert the test wire into the wiring part 23 to perform a circuit test on the circuit breaker contacts.

[0074] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A circuit breaker contact testing tool, used for testing circuit breaker contacts, characterized in that, include: Rack (1); The adjustment mechanism (2) includes two first adjustment components (21), which are movably connected to the frame (1). The distance between the two first adjustment components (21) along a first straight line is adjustable. Each first adjustment component (21) is provided with a second adjustment component (22), which is movably connected to the first adjustment component (21). The distance between the two second adjustment components (22) along a second straight line is adjustable. The first straight line is parallel to the second straight line. Two test components (3), each of the second adjustment components (22) is provided with one of the test components (3), the test components (3) are rotatably connected to the second adjustment components (22), the two test components (3) can be arranged to form a test ring, the test ring can abut against the inner ring of the circuit breaker contact for testing; The test component (3) includes a test head (31), the test head (31) includes a test part (311) and a rotating part (312), the rotating part (312) is rotatably connected to the second adjustment component (22) through the rotating component (5), and the test parts (311) of the two test components (3) can form the test ring. Each of the test components (3) includes two test heads (31), and the rotating component (5) includes a second adjusting gear (51) and a first auxiliary gear (52). The second adjusting gear (51) is rotatably connected to the second adjusting component (22). A first auxiliary gear (52) is fixedly connected to each of the test heads (31). The two first auxiliary gears (52) mesh with each other, and one of the first auxiliary gears (52) meshes with the second adjusting gear (51). Alternatively, the rotating component (5) includes a second adjusting gear (51) and a first auxiliary gear (52). The second adjusting gear (51) is fixedly connected to the second adjusting component (22), and the first auxiliary gear (52) meshes with the second adjusting gear (51). The first auxiliary gear (52) can rotate around its own axis and can revolve around the second adjusting gear (51). The rotating part (312) is rotatably connected to the first auxiliary gear (52) and can be locked by the locking structure (6).

2. The circuit breaker contact testing tool according to claim 1, characterized in that, The frame (1) includes a guide rod (11) that extends along the first straight line direction. Two first adjustment components (21) are slidably connected to the guide rod (11). The first adjustment components (21) can be fixed to the guide rod (11) by a locking component (4).

3. The circuit breaker contact testing tool according to claim 2, characterized in that, The locking assembly (4) includes a first adjusting gear (41) and two adjusting racks (42). The first adjusting gear (41) is rotatably connected to the guide rod (11). Each adjusting rack (42) is connected to one of the first adjusting assemblies (21). The two adjusting racks (42) are distributed on both sides of the first adjusting gear (41) and mesh with the first adjusting gear (41).

4. The circuit breaker contact testing tool according to claim 1, characterized in that, The first adjustment component (21) has a first limiting groove (212) at one end, which extends along the second straight line direction. The second adjustment component (22) includes a moving part (221) and a connecting part (222). One end of the moving part (221) is connected to the connecting part (222), and the other end of the moving part (221) is slidably connected to the first limiting groove (212). The moving part (221) can move within the first limiting groove (212).

5. The circuit breaker contact testing tool according to claim 4, characterized in that, An adjusting screw (223) is provided in the first limiting groove (212). The adjusting screw (223) is rotatably connected to the first limiting groove (212). The moving part (221) is threadedly connected to the adjusting screw (223). The adjusting screw (223) can rotate along its own axis to drive the moving part (221) to move along the axis of the adjusting screw (223).

6. The circuit breaker contact testing tool according to claim 1, characterized in that, The locking structure (6) includes a plurality of first protrusions (61), the first protrusions (61) are connected to the first auxiliary gear (52), and a locking groove (62) is formed between adjacent first protrusions (61). A second protrusion (3121) is provided at one end of the rotating part (312) near the locking structure (6), and the second protrusion (3121) can be inserted into the locking groove (62) and lock the rotating part (312).

7. The circuit breaker contact testing tool according to any one of claims 1-6, characterized in that, Each of the two first adjustment components (21) has a wiring portion (23) at the end away from the second adjustment component (22).

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