CN108572067B - Circuit breaker operating mechanism test tool - Google Patents
Circuit breaker operating mechanism test tool Download PDFInfo
- Publication number
- CN108572067B CN108572067B CN201810589054.4A CN201810589054A CN108572067B CN 108572067 B CN108572067 B CN 108572067B CN 201810589054 A CN201810589054 A CN 201810589054A CN 108572067 B CN108572067 B CN 108572067B
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- operating mechanism
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- pull rod
- crank arm
- frame
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- 238000012360 testing method Methods 0.000 title claims abstract description 35
- 230000005540 biological transmission Effects 0.000 claims abstract description 19
- 238000009413 insulation Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 3
- 230000000712 assembly Effects 0.000 description 9
- 238000000429 assembly Methods 0.000 description 9
- 238000003466 welding Methods 0.000 description 6
- 238000003825 pressing Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
本发明提供了一种断路器操动机构测试工装。断路器操动机构测试工装包括架体，架体上转动装配有主转轴，主转轴通过拐臂结构连接有模拟断路器三相绝缘拉杆的三相拉杆组件，并通过三相拉杆组件连接有模拟断路器三相真空负载的负载组件，架体上还设有操动机构固定安装结构，主转轴上轴向滑动安装有用于与被测操动机构的输出端连接的传动拐臂，传动拐臂与主转轴止转连接。该测试工装通过三相拉杆组件和三相真空负载组件分别模拟断路器的三相传动拉杆和三相真空开关，在对操动机构进行测试时，不仅保证了测试结果准确真实，而且避免了现有采用断路器对操动机构进行模拟测试断路器易受损，不能多次使用，测试成本较高的问题。
The present invention provides a circuit breaker operating mechanism test fixture. The circuit breaker operating mechanism test fixture comprises a frame, on which a main shaft is rotatably mounted, the main shaft is connected to a three-phase pull rod assembly simulating a three-phase insulating pull rod of a circuit breaker through a crank arm structure, and is connected to a load assembly simulating a three-phase vacuum load of a circuit breaker through the three-phase pull rod assembly, and an operating mechanism fixed installation structure is also provided on the frame, a transmission crank arm for connecting to an output end of the operating mechanism to be tested is axially slidably mounted on the main shaft, and the transmission crank arm is connected to the main shaft to prevent rotation. The test fixture simulates the three-phase transmission pull rod and the three-phase vacuum switch of the circuit breaker through the three-phase pull rod assembly and the three-phase vacuum load assembly respectively, when testing the operating mechanism, not only ensures that the test results are accurate and true, but also avoids the problems of the existing use of circuit breakers to simulate the operating mechanism, such as the circuit breaker is easily damaged, cannot be used multiple times, and the test cost is high.
Description
Technical Field
The invention relates to testing equipment, in particular to a testing tool for a breaker operating mechanism.
Background
The circuit breaker is used as an electric device for controlling the opening and closing of a circuit, and has various types and wider application occasions. For example, a ZW20 disconnector disclosed in chinese patent publication No. CN207199523U is a circuit breaker suitable for outdoor overhead distribution lines. When using such circuit breakers, a mating installation of the adapted operating mechanism is required, and the mechanical life of the operating mechanism is often tested before installation. The traditional test mode is often to assemble a circuit breaker, connect the operating mechanism with the circuit breaker and carry out a large number of times of opening and closing operations, however, the circuit breaker assembled by the assembly is only used for testing, and after the testing is finished, the circuit breaker is often damaged to different degrees and cannot be used, and a new circuit breaker is often required to be assembled again when the next testing is carried out, so that the testing cost of the operating mechanism is quite high.
Disclosure of Invention
The invention aims to provide a testing tool for a breaker operating mechanism, which is used for solving the problems that the existing testing tool is not rotated, the operating mechanism is tested through a breaker, and the testing cost is high.
The testing tool for the breaker operating mechanism comprises a frame body, wherein a main rotating shaft is rotatably assembled on the frame body, the main rotating shaft is connected with a three-phase pull rod assembly simulating a three-phase insulating pull rod of a breaker through a crank arm structure, the three-phase pull rod assembly is connected with a load assembly simulating a three-phase vacuum load of the breaker, an operating mechanism fixing and installing structure is further arranged on the frame body, a transmission crank arm used for being connected with an output end of an operating mechanism to be tested is axially and slidably installed on the main rotating shaft, the transmission crank arm is in anti-rotation connection with the main rotating shaft, the load assembly comprises a spring pull rod, a load overrun spring, a pull rod and a pull rod sleeve, one end of the spring pull rod extends into the pull rod sleeve and is welded, a pressing plate matched with the load overrun spring in a pressing mode is arranged on the spring pull rod sleeve, the other end of the load overrun spring is in a welding mode, the load assembly comprises three-phase spring assemblies, one ends of the three-phase spring assemblies are respectively fixed with the frame body in a corresponding mode, the three-phase spring assemblies are arranged on the lower side of the three-phase pull rod assembly, the three-phase spring assemblies are hinged with the three-phase pull rod assemblies through connecting arms with connecting ends respectively, the crank arms with the two connecting ends of the three-phase pull rod assemblies, the two-phase spring assemblies are arranged on the lower sides of the three-phase pull rod assemblies in a corresponding mode, the step-stage step-shaped shaft fixing structure is arranged on the side wall of a step-shaped shaft, the side face of a large-shaped shaft is used for being fixed by a small-diameter locking mechanism, and a small-diameter locking section is arranged on the side of a small-diameter stepped shaft end, and a small-diameter locking end locking mechanism is fixed by a locking end locking mechanism, and a locking threaded end section, and a locking end locking device is arranged.
According to the testing tool for the breaker operating mechanism, the three-phase transmission pull rod and the three-phase vacuum switch of the breaker are respectively simulated through the three-phase pull rod assembly and the three-phase vacuum load assembly, when the operating mechanism is tested, the accurate and true testing result is ensured, and the problems that the breaker is easy to damage, cannot be used for multiple times and has high testing cost when the breaker is used for simulating the operating mechanism in the prior art are solved. The arrangement can effectively utilize the space, so that the structure of the whole tool is more compact.
Of course, it is preferred that the three-phase tie rod assembly be adjustable in length to facilitate connection of the main shaft to the vacuum load assembly.
On this basis, the support body can set up to rectangular box structure, and three-phase pull rod assembly and three-phase load subassembly are located rectangular frame, and main pivot rotates the assembly on rectangular frame's two opposite lateral walls, and the transmission turning arm is installed on the one end that main pivot stretched out the frame lateral wall, and operating mechanism fixed mounting structure sets up on being close to the frame lateral wall of transmission turning arm. The three-phase pull rod assembly and the three-phase load assembly are arranged in the frame, so that interference with other moving parts in the testing process is avoided.
Furthermore, one end of the main rotating shaft, which is far away from the transmission crank arm, is connected with a buffer spring of a buffer component of the main rotating shaft of the analog circuit breaker through a crank arm structure. The buffer spring is arranged to simulate the stress state and the motion state of the circuit breaker during opening and closing operation more truly, so that the detection result is more real.
In order to further improve the service life, the main rotating shaft is rotatably assembled on the side wall of the frame through a bearing.
In the specific structural design, the fixed mounting structure of the operating mechanism can be a hanging structure.
In order to prolong the service life of the main rotating shaft, the transmission crank arm comprises a main crank arm and a shaft sleeve which is axially arranged in parallel with the main crank arm, the main crank arm is connected with the main rotating shaft in a rotation stopping way through a bolt, the shaft sleeve is fixedly connected with the main crank arm, an expansion pin which is radially inserted into the main rotating shaft is arranged on the shaft sleeve, and the rotation stopping connection between the main rotating shaft and the main crank arm can be ensured when the bolt is severely worn through the expansion pin.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of a testing tool for a breaker operating mechanism of the present invention;
FIG. 2 is a schematic view of the driving lever of FIG. 1;
FIG. 3 is a schematic diagram showing the connection of the drawbar assembly to the load assembly;
Fig. 4 is a schematic diagram of the operation mechanism when the operation mechanism performs a test through the test tool.
Detailed Description
Embodiments of the present invention will be further described with reference to the accompanying drawings.
The specific embodiment of the test fixture for the breaker operating mechanism disclosed by the invention is shown in fig. 1 to 4, and comprises a frame body 1, wherein the frame body 1 is of a rectangular box type structure, two opposite side walls of the rectangular box type structure enclose an inner space of a frame, and a three-phase pull rod assembly 3 simulating a three-phase insulation pull rod of a breaker and a three-phase vacuum load 5 which is correspondingly connected with the three-phase pull rod assembly and simulates a three-phase vacuum switch of the breaker are arranged in the inner space.
Specifically, main rotating shafts 4 are rotatably installed on two opposite side walls of the rectangular frame through bearings 2, and the main rotating shafts 4 are respectively connected with the three-phase pull rod assemblies 3 through crank arm structures 10. The inside of the frame is fixedly provided with a baffle welding device 13, two opposite side walls are also provided with a pull rod shaft 12, the pull rod shaft 12 is provided with a three-phase connecting crank arm 11, and the three-phase connecting crank arm 11 can freely rotate around the pull rod shaft 12.
One connecting end of the connecting crank arm 11 is connected with the three-phase pull rod assembly 3 of the three-phase insulation pull rod of the analog circuit breaker. The three-phase pull rod assembly 3 comprises an adjusting screw rod 31, an insulating pull rod 32 and a pull rod overtravel spring 33, one end of the adjusting screw rod 31 is hinged with the connecting crank arm 11, the pull rod overtravel spring 33 is sleeved on the insulating pull rod 32, a spring seat is sleeved at the other end of the insulating pull rod, the insulating pull rod is hinged with the crank arm structure 10 through a long hole at one end of the insulating pull rod, and the insulating pull rod 32 is in threaded connection with the adjusting screw rod 31.
The vacuum load 5 comprises a spring pull rod 51, a load over-travel spring 52, a pull rod sleeve welding device 53 and a pull rod 54, one end of the pull rod 54 is hinged to the baffle welding device 13, one end of the spring pull rod 51 is hinged to the connecting crank arm 11, the other end of the spring pull rod extends into the pull rod sleeve welding device 53, a pressing plate in pressing fit with the load over-travel spring 52 is arranged on the spring pull rod 51, and the other end of the load over-travel spring 52 abuts against the pull rod sleeve welding device 53.
In the operation process, the main rotating shaft 4 drives the three-phase pull rod assembly 3 to move through the crank arm structure 10, and then drives the three-phase vacuum load 5 to move through the connecting crank arm 11, so as to compress the load over-travel spring 52.
Two ends of the main rotating shaft 4 respectively extend out of two opposite side walls, one end of the main rotating shaft is connected with a buffer spring 6 simulating a breaker main rotating shaft buffer part through a crank arm structure, and the other end of the main rotating shaft is provided with a transmission crank arm 7. Wherein, the transmission crank arm 7 is axially and slidably arranged on the main rotating shaft along the main rotating shaft 4. The side wall of the rectangular frame, which is close to the transmission crank arm 7, is provided with a fixed mounting structure for fixedly mounting the breaker operating mechanism.
In this embodiment, the fixed mounting structure of the operating mechanism fixes the operating mechanism by means of hanging. Specifically, the fixed mounting structure is a two-stage stepped shaft 8 arranged on the side wall of the frame, the large-diameter section of the two-stage stepped shaft 8 is abutted against the side wall of the frame, the small-diameter section of the stepped shaft forms an inserting section for inserting the operating mechanism, the step surface of the stepped shaft forms a positioning surface for positioning the operating mechanism, the end part of the small-diameter section is outwards extended to form a locking stud, and the operating mechanism can be locked and fixed through a locking nut on the locking stud.
As shown in fig. 2, the driving crank arm 7 includes a main crank arm 70 and a shaft sleeve 71 axially parallel to the main crank arm 70, the main crank arm 70 is in rotation-stopping connection with the main rotating shaft 4 through a bolt, the shaft sleeve 71 is fixedly connected with the main crank arm 70, an expansion pin radially inserted into the main rotating shaft 4 is arranged on the shaft sleeve 71, and rotation-stopping connection between the main rotating shaft and the main crank arm can be ensured when the bolt is severely worn through the expansion pin.
When the tool is used, the operating mechanism is fixedly arranged on the rectangular frame through the fixed mounting structure, then the output end 9 of the operating mechanism is connected with the transmission crank arm 7, the operating mechanism is electrified to drive the main rotating shaft 4 to reciprocally rotate and drive the three-phase pull rod assembly 3 and the three-phase vacuum load 5 to simulate the motion state of the insulating pull rod and the vacuum fracture when the breaker is in opening and closing action, and the mechanical life of the operating mechanism is tested through a large number of opening and closing simulation actions.
Of course, the breaker operating mechanism testing tool of the present invention is not limited to the above embodiment. In other embodiments, the frame body can be of a hollow frame structure, the fixed mounting structure of the operating mechanism can be a bolt connecting hole formed in the arranged frame and fixedly connected with the operating mechanism through the bolt connecting hole, or a fixed bottom plate which is arranged on the side wall and horizontally extends, the operating mechanism is mounted on the surface of the fixed bottom plate, the main rotating shaft can be rotatably assembled on the frame body through a shaft sleeve, and the transmission crank arm can be in rotation-stopping connection with the main rotating shaft through profile fit or key slot fit.
Claims (7)
1. The testing tool for the breaker operating mechanism is characterized by comprising a frame body, wherein a main rotating shaft is rotatably assembled on the frame body, the main rotating shaft is connected with a three-phase pull rod assembly simulating a three-phase insulation pull rod of a breaker through a crank arm structure, and is connected with a load assembly simulating a three-phase vacuum load of the breaker through the three-phase pull rod assembly; the load assembly comprises a three-phase spring assembly, one end of the three-phase spring assembly is fixed relative to the frame body, the three-phase spring assembly and the three-phase pull rod assembly are correspondingly arranged on the lower side of the three-phase pull rod assembly, the three-phase spring assembly and the three-phase pull rod assembly are hinged through connecting crank arms with two connecting ends respectively to form a seesaw structure, the fixed mounting structure of the operating mechanism is a two-stage stepped shaft arranged on the side wall of the frame, the large-diameter section of the two-stage stepped shaft abuts against the side wall of the frame, the small-diameter section of the stepped shaft forms an inserting section for inserting the operating mechanism, the step surface of the stepped shaft forms a positioning surface for positioning the operating mechanism, the end part of the small-diameter section is outwards extended with a locking stud, and the operating mechanism can be locked and fixed through the locking nut on the locking stud.
2. The breaker operating mechanism testing tool of claim 1, wherein the length of the three-phase pull rod assembly is adjustable.
3. The breaker operating mechanism testing tool according to claim 1, wherein the frame body is of a rectangular box type structure, the three-phase pull rod assembly and the three-phase load assembly are located in a rectangular frame, the main rotating shaft is rotatably assembled on two opposite side walls of the rectangular frame, the transmission crank arm is installed on one end of the main rotating shaft extending out of the side wall of the frame, and the operating mechanism fixing and installing structure is arranged on the side wall of the frame close to the transmission crank arm.
4. The breaker operating mechanism testing tool of claim 3, wherein one end of the main rotating shaft far away from the transmission crank arm is connected with a buffer spring simulating a breaker main rotating shaft buffer component through a crank arm structure.
5. The breaker operating mechanism testing tool of claim 3 or 4, wherein the main shaft is rotatably mounted to the frame side wall by bearings.
6. The tool for testing the operating mechanism of the circuit breaker according to claim 3 or 4, wherein the fixed mounting structure of the operating mechanism is mounted on the side wall of the frame in a hanging manner.
7. The tool for testing the operating mechanism of the circuit breaker according to claim 3 or 4, wherein the transmission crank arm comprises a main crank arm and a shaft sleeve which is axially arranged in parallel with the main crank arm, the main crank arm is in rotation-stopping connection with a main rotating shaft through a bolt, the shaft sleeve is fixedly connected with the main crank arm, and an expansion pin which is radially inserted with the main rotating shaft is arranged on the shaft sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810589054.4A CN108572067B (en) | 2018-06-08 | 2018-06-08 | Circuit breaker operating mechanism test tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810589054.4A CN108572067B (en) | 2018-06-08 | 2018-06-08 | Circuit breaker operating mechanism test tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108572067A CN108572067A (en) | 2018-09-25 |
| CN108572067B true CN108572067B (en) | 2024-12-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810589054.4A Active CN108572067B (en) | 2018-06-08 | 2018-06-08 | Circuit breaker operating mechanism test tool |
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| Country | Link |
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| CN (1) | CN108572067B (en) |
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| CN207183098U (en) * | 2017-09-27 | 2018-04-03 | 杭州之江开关股份有限公司 | A kind of simulation operation apparatus of breaker mechanism |
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| US4855546A (en) * | 1987-03-17 | 1989-08-08 | Leisch Lee J | Vacuum operated circuit breaker |
| JPH06215672A (en) * | 1993-01-20 | 1994-08-05 | Toshiba Corp | Vacuum circuit breaker |
| CN2314828Y (en) * | 1997-11-26 | 1999-04-21 | 北京海淀东升体育器材厂 | Running machine |
| JP3663090B2 (en) * | 1999-10-14 | 2005-06-22 | 株式会社日立製作所 | Gas circuit breaker and gas insulated switchgear provided with the same |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203981397U (en) * | 2014-07-03 | 2014-12-03 | 中国西电电气股份有限公司 | A kind of debugging test device for breaker spring operating mechanism |
| CN106710959A (en) * | 2017-02-10 | 2017-05-24 | 平高集团有限公司 | Circuit breaker and main shaft transmission structure thereof |
| CN207183098U (en) * | 2017-09-27 | 2018-04-03 | 杭州之江开关股份有限公司 | A kind of simulation operation apparatus of breaker mechanism |
| CN207398694U (en) * | 2017-10-16 | 2018-05-22 | 四川电器集团股份有限公司 | A kind of interlock of switchgear |
| CN208350351U (en) * | 2018-06-08 | 2019-01-08 | 河南华盛隆源电气有限公司 | A kind of breaker operation mechanism test fixture |
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| CN108572067A (en) | 2018-09-25 |
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