CN115598517A

CN115598517A - Breaker contact testing tool

Info

Publication number: CN115598517A
Application number: CN202211356912.3A
Authority: CN
Inventors: 朱沛锋; 吕育昕; 李国保
Original assignee: Guangdong Power Grid Co Ltd; Shanwei Power Supply Bureau of Guangdong Power Grid Co Ltd
Current assignee: Guangdong Power Grid Co Ltd; Shanwei Power Supply Bureau of Guangdong Power Grid Co Ltd
Priority date: 2022-11-01
Filing date: 2022-11-01
Publication date: 2023-01-13

Abstract

The invention belongs to the technical field of circuit testing, and discloses a breaker contact testing tool, which is used for testing a breaker contact and comprises a rack, an adjusting mechanism and two testing components; the adjusting mechanism comprises two first adjusting assemblies, the first adjusting assemblies are movably connected with the rack, the distance between the two first adjusting assemblies along a first straight line direction is adjustable, each first adjusting assembly is provided with one second adjusting assembly, the second adjusting assemblies are movably connected with the first adjusting assemblies, the distance between 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; be provided with a test assembly on every second adjusting part, test assembly rotates with the second adjusting part to be connected, and two test assemblies can enclose to establish and form the test ring, and the test ring can be in order to test with the inner circle butt of circuit breaker tentacle for test assembly adapts to not unidimensional plum blossom tentacle, has avoided the staff to carry the traditional test tool of multiple size, increases work efficiency.

Description

Breaker contact testing tool

Technical Field

The invention relates to the technical field of circuit testing, in particular to a breaker contact testing tool.

Background

The indoor high-voltage vacuum circuit breaker is an important device for protecting normal operation of power grid equipment in a power grid system, and a loop resistance test of the indoor high-voltage vacuum circuit breaker is a necessary work for ensuring normal operation of the power grid equipment.

Patent 201410566008.4 discloses a cubical switchboard circuit breaker return circuit resistance test clamp, the staff will use this kind of special test clamp to carry out the return circuit resistance test to the plum blossom contact among the indoor high-pressure vacuum circuit breaker usually, however the plum blossom contact among the indoor high-pressure vacuum circuit breaker has multiple model, different models then have different sizes, the angle of opening and shutting of two arm lock of this kind of clamp is little, need be equipped with the clamp of different sizes and just can carry out test work to the plum blossom contact of different model sizes, the test efficiency is low, need carry a plurality of not unidimensional instruments, the work degree of difficulty has been increased.

Disclosure of Invention

The invention aims to provide a circuit breaker contact testing tool, which aims to solve the technical problems that loop resistance testing of plum blossom contacts with different sizes can be completed only by a plurality of testing tools with different sizes, the testing efficiency is low, and the working difficulty is high.

In order to achieve the purpose, the invention adopts the following technical scheme:

a circuit breaker contact testing tool for testing a circuit breaker contact, comprising:

a frame;

the adjusting mechanism comprises two first adjusting assemblies, the first adjusting assemblies are movably connected with the rack, the distance between the two first adjusting assemblies along a first straight line direction is adjustable, each first adjusting assembly is provided with one second adjusting assembly, the second adjusting assemblies are movably connected with the first adjusting assemblies, the distance between 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;

two test components, every be provided with one on the second adjusting part test component, test component with the second adjusting part rotates to be connected, two test component can enclose to establish and form the test ring, the test ring can with the inner circle butt of circuit breaker tentacle is in order to test.

Preferably, the rack comprises a guide rod, the guide rod extends along the first linear direction, the two first adjusting assemblies are connected with the guide rod in a sliding mode, and the first adjusting assemblies can be fixed with the guide rod through locking assemblies.

Preferably, the locking assembly comprises a first adjusting gear and two adjusting racks, the first adjusting gear is rotatably connected with the guide rod, each adjusting rack is connected with one first adjusting assembly, and the two adjusting racks are distributed on two sides of the first adjusting gear and meshed with the first adjusting gear.

Preferably, one end of the first adjusting component is provided with a first limiting groove, the first limiting groove extends along the second linear direction, the second adjusting component comprises a moving portion and a connecting portion, one end of the moving portion is connected with the connecting portion, the other end of the moving portion is connected with the first limiting groove in a sliding manner, and the moving portion can move in the first limiting groove.

Preferably, an adjusting screw is arranged in the first limiting groove, the adjusting screw is rotatably connected with the first limiting groove, the moving portion is in threaded connection with the adjusting screw, and the adjusting screw can rotate along the axis of the adjusting screw to drive the moving portion to move along the axis of the adjusting screw.

Preferably, the test assembly comprises a test head, the test head comprises a test part and a rotating part, the rotating part is rotatably connected with the second adjusting assembly through the rotating assembly, and the test parts of the two test assemblies can be arranged in an enclosing manner to form the test ring.

Preferably, each of the test assemblies includes two test heads, the rotating assembly includes a second adjusting gear and a first pinion, the second adjusting gear is rotatably connected to the second adjusting assembly, one first pinion is fixedly connected to each of the test heads, the two first pinions are engaged, and one of the first pinions is engaged with the second adjusting gear.

Preferably, the rotating assembly includes a second adjusting gear and a first pinion, the second adjusting gear is fixedly connected with the second adjusting assembly, the first pinion is engaged with the second adjusting gear, the first pinion can rotate around its axis and revolve around the second adjusting gear, and the rotating part is rotatably connected with the first pinion and can be locked by a locking structure.

Preferably, the locking structure comprises a plurality of first protrusions, the first protrusions are connected with the first pinion, a locking groove is formed between every two adjacent first protrusions, a second protrusion is arranged at one end, close to the locking structure, of the rotating portion, and the second protrusion can be inserted into the locking groove and locks the rotating portion.

Preferably, the end of each of the two first adjusting components far away from the second adjusting component is provided with a wire connection part.

Has the advantages that: the circuit breaker contact testing tool comprises a rack, an adjusting mechanism and a testing component, wherein the adjusting mechanism comprises a first adjusting component and a second adjusting component, the two first adjusting components are used for primary adjustment of the testing component, the distance between the two testing components in a first straight line direction can be changed rapidly, the two second adjusting components are used for secondary adjustment of the testing component in a second straight line direction parallel to the first straight line direction, secondary fine adjustment can be carried out on the distance between the testing component and the second straight line direction, meanwhile, the testing component is rotationally connected with the second adjusting components, the two testing components can be changed in the rotating process to butt against inner rings of contacts with different diameters, and therefore tertiary adjustment is carried out.

Drawings

Fig. 1 is a schematic structural diagram of a circuit breaker contact testing tool according to an embodiment of the present invention;

FIG. 2 is an enlarged view at A in FIG. 1;

FIG. 3 is a front view of a circuit breaker contact testing tool according to one embodiment of the present invention;

FIG. 4 is a top view of a circuit breaker contact testing tool according to one embodiment of the present invention;

FIG. 5 is a front view of a circuit breaker contact testing tool according to a second embodiment of the present invention;

fig. 6 is a schematic view of the rotating part and the locking structure according to the second embodiment of the present invention.

In the figure:

1. a frame; 11. a guide bar;

2. an adjustment mechanism; 21. a first adjustment assembly; 211. a first limit groove; 22. a second adjustment assembly; 221. A moving part; 222. a connecting portion; 2221. a second limit groove; 223. adjusting the screw rod; 224. a second adjustment knob; 23. a wiring portion; 24. a hand-held portion;

3. testing the component; 31. a test head; 311. a test section; 312. a rotating part; 3121. a second protrusion;

4. a locking assembly; 41. a first adjusting gear; 42. adjusting the rack; 43. a first adjustment knob;

5. a rotating assembly; 51. a second adjusting gear; 52. a first counter gear; 53. a third adjusting knob;

6. a locking structure; 61. a first protrusion; 62. and (4) locking the groove.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

Example one

Referring to fig. 1 to 4, the embodiment provides a circuit breaker contact testing tool, which is used for testing a circuit breaker contact, and includes a rack 1, an adjusting mechanism 2 and two testing assemblies 3, wherein the rack 1 is used for a worker to hold and support the adjusting mechanism 2 and the two testing assemblies 3; adjustment mechanism 2 is used for adjusting two test assembly 3's position in order to adapt to not unidimensional plum blossom contact, and two test assembly 3 can rotate in order to change the position, further adapt to not unidimensional plum blossom contact, make circuit breaker contact testing tool more general, have avoided the staff to carry the traditional testing tool of multiple size, have reduced the work degree of difficulty, have increased work efficiency.

The adjusting mechanism 2 comprises two first adjusting components 21, the first adjusting components 21 are movably connected with the rack 1, the distance between the two first adjusting components 21 in the first linear direction is adjustable, a second adjusting component 22 is arranged on each first adjusting component 21, the second adjusting components 22 are movably connected with the first adjusting components 21, the distance between the two second adjusting components 22 in the second linear direction is adjustable, the first straight line is parallel to the second straight line, and the circuit breaker contact testing tool can be quickly and accurately attached to the inner ring of the circuit breaker contact through two-stage adjustment. Specifically, the adjustment range of the interval between the two first adjustment assemblies 21 is large for quick adjustment, and the adjustment range of the interval between the two second adjustment assemblies 22 is small for fine adjustment.

Each second adjusting component 22 is provided with one testing component 3, the testing components 3 are rotatably connected with the second adjusting components 22, the two testing components 3 can be arranged in an enclosing mode to form a testing ring, the testing ring can be abutted against the inner ring of the circuit breaker contact to conduct testing, the position of the testing components 3 is adjusted through rotation of the testing components 3, the testing ring can be attached to the inner ring of the circuit breaker contact, and errors are reduced; and the size of the test ring can be changed through the rotation of the test component 3 so as to adapt to circuit breaker contacts with different sizes.

Frame 1 includes guide bar 11, and guide bar 11 extends along first linear direction, and two first adjusting part 21 all with guide bar 11 sliding connection, first adjusting part 21 can be fixed with guide bar 11 through locking Assembly 4, make two first adjusting part 21 can be on guide bar 11 steady slip and can fix in the position that needs.

In this embodiment, the locking assembly 4 employs a rack and pinion mechanism. Specifically, locking Assembly 4 includes first adjusting gear 41 and two adjusting rack 42, first adjusting gear 41 rotates with guide bar 11 and is connected, every adjusting rack 42 is connected with a first adjusting assembly 21, two adjusting rack 42 distribute in first adjusting gear 41 both sides and with first adjusting gear 41 meshing, when first adjusting gear 41 rotates, can let two adjusting rack 42 rectilinear movement to make two first adjusting assembly 21 move in opposite directions or back to each other simultaneously and lock in the position that needs, reduced the work degree of difficulty, increased work efficiency.

Further, first adjusting gear 41 is connected with first adjusting knob 43, and first adjusting knob 43 and first adjusting gear 41 fixed connection, first adjusting knob 43 can drive first adjusting gear 41 and rotate so that the interval between two first adjusting parts 21 changes, makes things convenient for the staff to operate.

One end of the first adjusting component 21 is provided with a first limiting groove 212, the first limiting groove 212 extends along a second linear direction, the second adjusting component 22 comprises a moving portion 221 and a connecting portion 222, one end of the moving portion 221 is connected with the connecting portion 222, the other end of the moving portion 221 is connected with the first limiting groove 212 in a sliding mode, the moving portion 221 can move in the first limiting groove 212 to change the distance between the two second adjusting components 22, and the inner rings of the circuit breaker contacts with different sizes can be attached accurately.

Specifically, be provided with adjusting screw 223 in the first spacing groove 212, adjusting screw 223 rotates with first spacing groove 212 and is connected, removal portion 221 and adjusting screw 223 threaded connection, and adjusting screw 223 can rotate along self axis and remove along adjusting screw 223's axis in order to drive removal portion 221, can make second adjusting part 22 remove in less within range and carry out the accurate regulation of secondary.

The pitch of the screw is not particularly limited, and should be set to be a smaller pitch according to actual needs, so that the second adjusting assembly 22 can move slowly to achieve the purpose of fine adjustment.

Further, one end of the screw rod extending out of the first limiting groove 212 is provided with a second adjusting knob 224, and the second adjusting knob 224 can drive the screw rod to rotate so as to adjust the position of the second adjusting component 22 in the first limiting groove 212, so that the worker can conveniently and accurately adjust the distance between the two second adjusting components 22.

Specifically, the first adjusting component 21 and the second adjusting component 22 are both made of conductive materials, the first adjusting component 21 is L-shaped, one end of the first adjusting component 21 is sleeved outside the guide rod 11 and is connected with the guide rod 11 in a sliding manner, the limiting groove is formed in the other end of the first adjusting component 21, so that the first adjusting component 21 is connected with the second adjusting component 22, the second adjusting component 22 can move along with the first adjusting component 21, and the second adjusting component 22 is finely adjusted on the basis of the quick adjustment of the distance between the first adjusting component 21 and the second adjusting component 22; the moving part 221 of the second adjusting component 22 is in threaded connection with the adjusting screw 223 in the first limiting groove 212, when the adjusting screw 223 rotates, the second adjusting component 22 can move in the range of the limiting groove, and the connecting part 222 is perpendicular to the moving part 221, so that the testing component 3 can be conveniently arranged.

The test component 3 includes the test head 31, and the test head 31 includes test portion 311 and rotation portion 312, and rotation portion 312 rotates through rotating assembly 5 with second adjusting component 22 to be connected, and two test component 3's test portion 311 can enclose and establish and form the test ring, and rotation portion 312 rotates and can drive test portion 311 and rotate in order to change the test ring size, makes the inner circle that the circuit breaker tentacle can more laminate of test ring, guarantees the success rate of test.

The number of the test heads 31 of each test component 3 is not limited, the test heads can be set according to actual needs, two test heads 31 are specifically set for each test component 3 in the embodiment, and therefore the accuracy of the test can be guaranteed, and the worker can be guaranteed to be adjusted quickly.

Specifically, each testing assembly 3 comprises two testing heads 31, the rotating assembly 5 comprises a second adjusting gear 51 and a first pinion 52, the second adjusting gear 51 is rotatably connected with the second adjusting assembly 22, one first pinion 52 is fixedly connected to each testing head 31, the two first pinions 52 are meshed, one first pinion 52 is meshed with the second adjusting gear 51, and when the second adjusting gear 51 rotates around the axis of the second adjusting gear, the two first pinions 52 rotate around the axis of the second adjusting gear in opposite directions, so that the size of the testing ring can be changed according to the diameter of the breaker contact.

Specifically, when setting up two test heads 31 in the test assembly 3, should guarantee that two test heads 31 do not be in the coplanar, can guarantee the biggest rotation range of test head 31, avoid causing the interference between the rotation head, and then the influence tests the circuit breaker contact of some sizes.

Specifically, the test portion 311 is arc-shaped, so that the contact area of the test portion with the circular inner ring of the circuit breaker contact can be increased, and the accuracy of a loop test result is ensured.

Further, one side of the connecting portion 222, which is far away from the testing component 3, is provided with a third adjusting knob 53, the third adjusting knob 53 is fixedly connected with a third adjusting gear, the third adjusting gear can drive the second adjusting gear 51 to rotate so as to change the size of the testing ring, the angle of the testing head 31 can be adjusted after the testing head 31 extends into the inner ring of the circuit breaker contact and abuts against the inner ring of the circuit breaker contact, and the testing head 31 can be better attached to the inner ring of the circuit breaker contact.

The two first adjusting components 21 are provided with wiring portions 23 at ends far away from the second adjusting component 22, the wiring portions 23 are connected with the first adjusting components 21 through bolts, and the wiring portions 23 can be connected with wires used for loop testing.

The other end of the wiring portion 23 is also provided with a handheld portion 24, a worker can not conveniently hold the rack 1 under the condition that the wiring portion is close to the wall, and the handheld portion 24 is arranged at one end far away from the wall, so that the worker can conveniently hold and operate the circuit breaker contact testing tool.

The circuit breaker contact test tool provided by the embodiment is roughly used as follows:

rotation of the first adjustment knob 43 provides a quick, one-step adjustment of the spacing between the first adjustment assemblies 21, depending on the approximate diameter of the circuit breaker contacts.

When the distance between the first adjusting assemblies 21 is slightly smaller than the diameter of the breaker contact, the second adjusting knobs 224 on the two first adjusting assemblies 21 are respectively adjusted to perform precise two-stage adjustment on the distance between the second adjusting assemblies 22.

When the interval adjustment between second adjusting part 22 is to the inner circle that can make test head 31 butt circuit breaker, stretch into the inner circle of circuit breaker contactor with test head 31 in, adjust third adjust knob 53 on two second adjusting part 22 respectively, thereby make test head 31 rotate and carry out tertiary regulation with the size that changes the test ring, make the inner circle of laminating circuit breaker contactor that test head 31 can be more accurate, increase area of contact as far as possible, guarantee the accuracy of test result.

The lead wire for circuit test is inserted into the wiring portion 23, and the circuit test is performed on the breaker contact.

Example two

The embodiment provides a cable combing device, wherein the same or corresponding parts as or to the first embodiment are provided with the same reference numerals as the first embodiment. For the sake of simplicity, only the differences between the second embodiment and the first embodiment will be described. The difference is that, referring to fig. 4, the rotating assembly 5 includes a second adjusting gear 51 and a first pinion 52, the second adjusting gear 51 is fixedly connected to the second adjusting assembly 22, the first pinion 52 is engaged with the second adjusting gear 51, the first pinion 52 can rotate around its axis and can revolve around the second adjusting gear 51, and the rotating portion 312 is rotatably connected to the first pinion 52 and can be locked by the locking structure 6, so that the test ring formed by the plurality of test heads 31 can always maintain a substantially circular shape, and the test ring can more accurately fit the inner ring of the circuit breaker contact.

Referring to fig. 5, the locking structure 6 includes a plurality of first protrusions 61, the first protrusions 61 are connected with the first pinion 52, a locking groove 62 is formed between adjacent first protrusions 61, a second protrusion 3121 is disposed at one end of the rotating portion 312 close to the locking structure 6, the second protrusion 3121 can be inserted into the locking groove 62 and locks the rotating portion 312, so that the testing portion 311 can be adjusted to a proper direction as required, the contact area between the testing head 31 and the inner ring of the circuit breaker contact is increased as much as possible, and the accuracy of the loop test is ensured.

Specifically, the connecting portion 222 is provided with two opposite second limiting grooves 2221, the second limiting grooves 2221 are semicircular, the first pinion 52 is provided with an adjusting rod, and the adjusting rod is slidably connected with the second limiting grooves 2221, so that the test head 31 can be conveniently operated by a worker.

When the distance between the second adjusting assemblies 22 is adjusted to make the testing head 31 abut against the inner ring of the circuit breaker, the testing head 31 is rotated around the axis of the rotating part 312 to adjust the position of the testing part 311, so that the first protrusion 61 is clamped in a certain locking groove 62 to ensure that the adjusted testing head 31 does not rotate any more.

Stretch into the inner circle of circuit breaker contact with test head 31, adjust the regulation pole on two second adjusting parts 22 respectively, thereby make first pinion 52 rotate around second adjusting gear 51 and carry out tertiary regulation, thereby make the inner circle of laminating circuit breaker contact that test head 31 can be more accurate, increase area of contact as far as possible, guarantee the accuracy of test result.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. Breaker contact testing tool for test the breaker contact, its characterized in that includes:

a frame (1);

the adjusting mechanism (2) comprises two first adjusting assemblies (21), the first adjusting assemblies (21) are movably connected with the rack (1), the distance between the two first adjusting assemblies (21) along a first straight line direction is adjustable, each first adjusting assembly (21) is provided with one second adjusting assembly (22), the second adjusting assemblies (22) are movably connected with the first adjusting assemblies (21), the distance between the two second adjusting assemblies (22) along a second straight line direction is adjustable, and the first straight line is parallel to the second straight line;

two test assembly (3), every be provided with one on second adjusting part (22) test assembly (3), test assembly (3) with second adjusting part (22) rotate to be connected, two test assembly (3) can enclose to establish and form the test ring, the test ring can with the inner circle butt of circuit breaker tentacle is in order to test.

2. Breaker contact test tool according to claim 1, characterized in that the frame (1) comprises a guide bar (11), the guide bar (11) extending in the first linear direction, both first adjustment assemblies (21) being slidably connected to the guide bar (11), the first adjustment assemblies (21) being fixable to the guide bar (11) by means of a locking assembly (4).

3. The circuit breaker contact test tool of claim 2, wherein the locking assembly (4) comprises a first adjustment gear (41) and two adjustment racks (42), the first adjustment gear (41) is rotatably connected to the guide bar (11), each adjustment rack (42) is connected to one of the first adjustment assemblies (21), and the two adjustment racks (42) are distributed on both sides of the first adjustment gear (41) and engaged with the first adjustment gear (41).

4. The circuit breaker contact testing tool of claim 1, wherein one end of the first adjusting assembly (21) is provided with a first limiting groove (212), the first limiting groove (212) extends along the second linear direction, the second adjusting assembly (22) comprises a moving portion (221) and a connecting portion (222), one end of the moving portion (221) is connected with the connecting portion (222), the other end of the moving portion (221) is slidably connected with the first limiting groove (212), and the moving portion (221) can move in the first limiting groove (212).

5. The circuit breaker contact testing tool of claim 4, wherein an adjusting screw (223) is disposed in the first limiting groove (212), the adjusting screw (223) is rotatably connected with the first limiting groove (212), the moving portion (221) is in threaded connection with the adjusting screw (223), and the adjusting screw (223) can rotate along its axis to drive the moving portion (221) to move along the axis of the adjusting screw (223).

6. The circuit breaker contact test tool of claim 1, wherein the test assembly (3) comprises a test head (31), the test head (31) comprises a test portion (311) and a rotating portion (312), the rotating portion (312) is rotatably connected with the second adjusting assembly (22) through a rotating assembly (5), and the test portions (311) of the two test assemblies (3) can be enclosed to form the test ring.

7. The circuit breaker contact test tool of claim 6, wherein each of said test assemblies (3) comprises two of said test heads (31), said rotating assembly (5) comprises a second adjusting gear (51) and a first counter gear (52), said second adjusting gear (51) being rotatably connected to said second adjusting assembly (22), one of said first counter gears (52) being fixedly connected to each of said test heads (31), two of said first counter gears (52) being in meshing engagement, one of said first counter gears (52) being in meshing engagement with said second adjusting gear (51).

8. The circuit breaker contact test tool of claim 6, wherein the rotating assembly (5) comprises a second adjusting gear (51) and a first pinion (52), the second adjusting gear (51) is fixedly connected with the second adjusting assembly (22), the first pinion (52) is meshed with the second adjusting gear (51), the first pinion (52) can rotate around the axis thereof and can revolve around the second adjusting gear (51), and the rotating part (312) is rotatably connected with the first pinion (52) and can be locked by the locking structure (6).

9. The circuit breaker contact test tool of claim 8, wherein the locking structure (6) comprises a plurality of first protrusions (61), the first protrusions (61) are connected with the first pinion (52), a locking groove (62) is formed between adjacent first protrusions (61), a second protrusion (3121) is provided at one end of the rotating portion (312) close to the locking structure (6), and the second protrusion (3121) can be inserted into the locking groove (62) and lock the rotating portion (312).

10. Breaker contact test tool according to any of claims 1-9, characterized in that both ends of the first adjustment assembly (21) remote from the second adjustment assembly (22) are provided with a wire connection portion (23).