CN106289617B - Plum blossom touches finger type isolator clamp force measuring device - Google Patents
Plum blossom touches finger type isolator clamp force measuring device Download PDFInfo
- Publication number
- CN106289617B CN106289617B CN201610949527.8A CN201610949527A CN106289617B CN 106289617 B CN106289617 B CN 106289617B CN 201610949527 A CN201610949527 A CN 201610949527A CN 106289617 B CN106289617 B CN 106289617B
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- shell
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- shaft pin
- pressure sensor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
- G01R31/3272—Apparatus, systems or circuits therefor
- G01R31/3274—Details related to measuring, e.g. sensing, displaying or computing; Measuring of variables related to the contact pieces, e.g. wear, position or resistance
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The plum-blossom-shaped contact finger type disconnecting switch clamping force measuring device comprises a shell of an analog contact, wherein the shell is in a hollow cylindrical tube shape, a mounting block is arranged in the shell, a pressure sensor mounting hole is formed in the mounting block, a shaft pin hole is formed in the shell, the shaft pin hole and the pressure sensor mounting hole share a central shaft, and the pressure sensor mounting hole in the mounting block is right opposite to the shaft pin hole in the shell; a guide sleeve is arranged in a shaft pin hole of the shell, the upper end surface of the guide sleeve is flush with the upper end surface of the shaft pin hole, a shaft pin is arranged in the guide sleeve, the upper end surface of the shaft pin is connected with a pressing sheet, the pressing sheet is arranged in a waist-shaped hole in the surface of the shell, and the waist-shaped hole is communicated with the shaft pin hole; the lower end surface of the shaft pin presses the pressure sensor, and the pressure sensor is arranged in a pressure sensor mounting hole on the mounting block. The device has simple and reliable structure and convenient operation, is used for detecting the clamping force of the plum-blossom-shaped contact finger type isolating switch, and solves the problem that the pressure distribution on the circumference is difficult to measure.
Description
Technical Field
The invention relates to a device for measuring the clamping force of a plug-in isolating switch.
Background
The moving contact of the quincunx contact finger structure ensures that the main switch blade has excellent self-cleaning capability when being switched on, and in areas with serious environmental pollution, the type switch ensures the reliability and safety of power transmission, the demand of the type switch is greatly increased, but the moving contact is required to be in reliable contact with a fixed contact when the type switch is operated, so that the phenomenon that the contact resistance is increased and the contact is burnt out to cause accidents due to insufficient pressure of the contact finger is avoided, and when a product leaves a factory, according to the requirements of customers and design, the clamping force of a high-voltage isolating switch needs to be measured in advance and is adjusted to meet the performance requirements of the product. Present high voltage isolator's clamp force measuring device, the structure is complicated, and only to the pincers clamp formula, the isolator clamp force of scissor-fork type is measured, the plum blossom touches the clamp force size that indicates to the contact that finger formula isolator can not effectual measurement circumferencial direction arranged, hardly look over touching when overhauing and indicating, can only dismantle the contact tube is whole, it cramps the spring and touches and indicate whether have obvious inefficacy and fracture to look over the inside, the troublesome poeration, inconvenient maintenance, and can't judge and change to the spring that reduces with touching the finger to those pressures, cause easily to generate heat because of contact pressure is not enough in long-term operation, and then burn out the contact.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects in the prior art and provides a plum-blossom-shaped contact finger type isolating switch clamping force measuring device which is simple in structure and convenient to operate.
The technical scheme adopted by the invention for solving the technical problems is as follows:
plum blossom touches and indicates type isolator clamp force measuring device, including the casing of simulation contact, the shape of casing is hollow cylindrical pipe, is equipped with the installation piece in the casing, is equipped with the pressure sensor mounting hole on the installation piece, is equipped with the axle pinhole on the casing, and axle pinhole and pressure sensor mounting hole are with the center pin, and the pressure sensor mounting hole on the installation piece faces the axle pinhole on the casing. A guide sleeve is arranged in a shaft pin hole of the shell, the upper end surface of the guide sleeve is flush with the upper end surface of the shaft pin hole, a shaft pin is arranged in the guide sleeve, the upper end surface of the shaft pin is connected with a pressing sheet, the pressing sheet is arranged in a waist-shaped hole in the surface of the shell, and the waist-shaped hole is communicated with the shaft pin hole; the lower end surface of the shaft pin presses the pressure sensor, and the pressure sensor is arranged in a pressure sensor mounting hole on the mounting block.
Furthermore, the inner wall of the shell is provided with a countersunk threaded hole, and the shell is connected with the mounting block through a screw.
Furthermore, both end faces of the sensor mounting block are arc-shaped, both end faces of the sensor mounting block are tightly attached to the inner pipe wall of the shell, a threaded hole is formed in the lower portion of the mounting block, an adjusting bolt is arranged in the threaded hole in the lower portion of the mounting block, the threaded hole in the lower portion of the mounting block is communicated with the sensor mounting hole, and the upper end face of the adjusting bolt is in contact with the bottom face of the pressure sensor. The mounting position of the pressure sensor is adjusted through the adjusting bolt, and the pressure sensor indirectly adjusts the height of the pressing sheet through the shaft pin.
Furthermore, the pressing sheet is a rectangular thin plate, and the waist-shaped hole can limit the rotation of the pressing sheet on the plane to ensure the position of the pressing sheet. When the waist-shaped hole on the surface of the shell is flush with the end face of the conductive tube on the isolating switch, the insertion depth of the pressing sheet is ensured to be just the positive pressure position of the contact finger, so that the pressing sheet is reliably contacted with the contact finger.
Furthermore, the lower part of the shaft pin extends out of the guide sleeve, the spring is arranged at the lower part of the shaft pin extending out of the guide sleeve, and the tail end of the shaft pin is provided with a limit pin, so that the shaft pin is prevented from moving when the clamping force measuring device is not in a working state.
Furthermore, the front end of the shell is chamfered to be beneficial to the guiding function of the clamping force measuring device when the contact finger of the isolating switch is inserted, and meanwhile, the resistance when the isolating switch is inserted is reduced.
Further, the surface of the shell is provided with threaded holes which are circumferentially arranged and used for installing the operating rod. The shell is rotated through the operating rod, the position of the pressing sheet is adjusted, the pressing sheet is enabled to be over against one of the contact fingers of the isolating switch, and the position deviation of the pressing sheet is avoided. The pressing sheet is pressed by the contact finger, so that the shaft pin is pressed against the pressure sensor.
Furthermore, an internal thread is processed at an opening of the front end face of the shell, and the front end of the shell is connected with the end cover through the thread. The installation block is convenient to seal by the end cover after being installed, and the moving arc contact of the isolating switch can be jacked open when the clamping force measuring device is inserted into the contact finger.
Further, the pressure sensor is connected to the isolating switch comprehensive tester through a signal line.
The axle pin can carry out the axial slip along the uide bushing, and both slip surface roughness levels are high to it produces great friction with the axle pinhole when being favorable to avoiding the axle pin atress, leads to acting on some power on pressure sensor and acts on the uide bushing, makes the measurement error appear. The shaft pin is axially guided through the guide sleeve, so that the pressure transmitted to the pressure sensor through the shaft pin is positive pressure, and the loss of the force is reduced.
When one of the contact fingers of the isolating switch extrudes the pressing sheet, the other contact finger opposite to the contact finger simultaneously generates a pair of acting forces with the same size and opposite directions, the acting forces are transmitted to the pressure sensor between the shaft pin and the mounting seat, and the pressure sensor transmits the numerical values to the isolating switch comprehensive tester through the data line, so that the numerical values can be conveniently read by workers, and the isolating switch comprehensive tester plays a role in guiding product debugging and maintenance.
The device has simple and reliable structure and convenient operation, is used for detecting the clamping force of the plum-blossom-shaped contact finger type isolating switch, and solves the problem that the pressure distribution on the circumference is difficult to measure. The peripheral surface of the measuring device is designed into a cylindrical surface, the shape of the moving contact is simulated, so that the pressure applied to the pressing sheet by the circumferentially arranged contact fingers during measurement is closer to the field condition, and a basis is provided for reliable contact during the operation of the switch.
Drawings
FIG. 1 is a schematic view of a plum-blossom-shaped contact finger clamping force measuring device assembly of the present embodiment;
FIG. 2 is an internal schematic view of a plum-blossom-shaped contact finger clamping force measuring device;
FIG. 3(a) is a schematic structural diagram of a plum-blossom-shaped contact finger clamping force measuring device in use;
FIG. 3(b) is a cross-sectional view of the plum-blossom-shaped finger clamping force measuring device shown in FIG. 3(a) in use;
FIG. 4(a) is a cross-sectional view of a mounting block;
fig. 4(b) is a perspective view of the mounting block.
In the figure: 1-a housing; 2, tabletting; 3-operating lever; 4-end cap; 5-a guide sleeve; 6-a spring; 7-mounting block; 8-adjusting bolt; 9-pressure sensor; 10-isolating switch; 11-contact finger; 12-pressure sensor mounting hole; 13-axle pin; 14-waist-shaped hole; 15-threaded hole; 16-shaft pin hole; 17-countersunk threaded hole; 18-internal thread; 19-moving arc contact; 20-signal line; 21-isolator comprehensive tester; 22-a spacing pin.
Detailed Description
The invention is further illustrated by the following figures and examples.
Referring to fig. 1, 2, 4(a) and 4(b), the plum-blossom-shaped contact finger type isolating switch clamping force measuring device comprises a shell 1 of a simulation contact, wherein the shell 1 is in a hollow cylindrical tube shape, a mounting block 7 is arranged in the shell 1, a pressure sensor mounting hole 12 is arranged on the mounting block 7, an axle pin hole 16 is arranged on the shell 1, the axle pin hole 16 and the pressure sensor mounting hole 12 are concentric, and the pressure sensor mounting hole 12 on the mounting block 7 is right opposite to the axle pin hole 16 on the shell 1. A guide sleeve 5 is arranged in a shaft pin hole 16 of the shell 1, the upper end face of the guide sleeve 5 is flush with the upper end face of the shaft pin hole, a shaft pin 13 is arranged in the guide sleeve 5, the upper end face of the shaft pin 13 is connected with the pressing sheet 2, the pressing sheet 2 is arranged in a waist-shaped hole 14 in the surface of the shell 1, and the waist-shaped hole 14 is communicated with the shaft pin hole 16; the lower end surface of the shaft pin 13 presses the pressure sensor 9, and the pressure sensor 9 is arranged in a pressure sensor mounting hole 12 on the mounting block 7; the pressure sensor 9 is connected to a disconnecting switch integrated tester 21 through a signal line 20.
The inner wall of the shell 1 is provided with a countersunk threaded hole 17, and the shell 1 is connected with the mounting block 7 through a screw.
The two end faces of the sensor mounting block 12 are both arc-shaped, the two end faces of the sensor mounting block 12 are tightly attached to the inner pipe wall of the shell 1, the lower portion of the mounting block 7 is provided with a threaded hole, an adjusting bolt 8 is arranged in the threaded hole in the lower portion of the mounting block 7, the threaded hole in the lower portion of the mounting block 7 is communicated with the sensor mounting hole 12, and the upper end face of the adjusting bolt 8 is in contact with the bottom face of the pressure sensor 9. The mounting position of the pressure sensor 9 is adjusted through the adjusting bolt 8, and the pressure sensor 9 indirectly adjusts the height of the pressing sheet 2 through the shaft pin 13.
The pressing sheet 2 is a rectangular thin plate, and the waist-shaped hole 14 can limit the rotation of the pressing sheet 2 on a plane and ensure the position of the pressing sheet. When the waist-shaped hole 14 on the surface of the shell 1 is flush with the end face of the conductive tube on the isolating switch 10, the insertion depth of the pressing sheet 2 is ensured to be just the positive pressure position of the contact finger 11, so that the pressing sheet 2 is reliably contacted with the contact finger 11.
The lower part of the shaft pin 13 extends out of the guide sleeve 5, the spring 6 is arranged at the lower part of the shaft pin 13 extending out of the guide sleeve 5, and the tail end of the shaft pin 13 is provided with a limit pin 22 so as to be beneficial to preventing the shaft pin 13 from moving when the clamping force measuring device is not in a working state.
The front end of the housing 1 is chamfered to facilitate the guiding function of the clamping force measuring device when the contact finger of the isolating switch is inserted, and simultaneously reduce the resistance when the isolating switch is inserted.
The surface of the housing 1 is provided with circumferentially arranged threaded holes 15 for mounting the operating lever 3. The shell 1 is rotated through the operating rod 3, the position of the pressing piece 2 is adjusted, the pressing piece 2 is just opposite to one of the contact fingers of the isolating switch, and the position deviation of the pressing piece 2 is avoided. The pressing sheet 2 is pressed by the finger so that the shaft pin 13 is pressed against the pressure sensor 9.
An opening on the front end face of the shell 1 is provided with internal threads 18, and the front end of the shell 1 is connected with the end cover 4 through threads. After the installation block 1 is installed, the end cover 4 is used for sealing, and the moving arc contact 19 of the isolating switch can be jacked open when the clamping force measuring device is inserted into the contact finger.
The axle pin 13 is mounted in the guide sleeve 5 so as to be axially displaceable. The end of the axle pin 13 passing through the guide sleeve 5 is provided with a spring 6, and the pressure sensor 9 is fastened in the mounting block 7 through the axle pin 13 and the mounting block 7. The pressure sensor 9, the shaft pin 13 and the guide sleeve 5 are on the same horizontal line. One end of the shaft pin 13 is fixedly connected with the pressing sheet 2, and the pressing sheet 2 exceeds the kidney-shaped hole by 1 mm.
Referring to fig. 3(a) and 3(b), when in use, firstly, the adjustable bolt 8 at the bottom of the mounting block 7 is adjusted, and the height of the pressure sensor 9 is adjusted, so that the pressing sheet 2 is 1mm higher than the outer surface of the shell; the clamping force measuring device is inserted into a contact finger of the isolating switch by pushing the operating rod 3, so that a waist-shaped hole on the surface of the shell is flush with the installation surface of a conductive tube of the isolating switch, the operating rod 3 is rotated to enable the single contact finger 11 to be pressed into the sheet 2 in a positive pressure mode, a pair of acting forces with the same size and opposite directions are simultaneously generated on the shell 1 and the sheet 2 relative to the two contact fingers, and the acting forces are transmitted to the pressure sensor 9 through a shaft pin 13 to measure the pressure of the single contact finger; the pressure sensor 9 transmits the force value to the isolating switch comprehensive tester through a data line for displaying.
Claims (7)
1. The plum-blossom-shaped contact finger type disconnecting switch clamping force measuring device is characterized by comprising a shell of an analog contact, wherein the shell is in a hollow cylindrical tube shape, a mounting block is arranged in the shell, a pressure sensor mounting hole is formed in the mounting block, an axle pin hole is formed in the shell, the axle pin hole and the pressure sensor mounting hole are concentric with a central axle, and the pressure sensor mounting hole in the mounting block is right opposite to the axle pin hole in the shell; a guide sleeve is arranged in a shaft pin hole of the shell, the upper end face of the guide sleeve is flush with the upper end face of the shaft pin hole, a shaft pin is arranged in the guide sleeve, the upper end face of the shaft pin is connected with a pressing sheet, the pressing sheet is arranged in a waist-shaped hole in the surface of the shell, and the waist-shaped hole is communicated with the shaft pin hole; the lower end surface of the shaft pin presses the pressure sensor, the pressure sensor is arranged in a pressure sensor mounting hole on the mounting block, the inner wall of the shell is provided with a countersunk threaded hole, the shell is connected with the mounting block through a screw, the two end surfaces of the sensor mounting block are both arc-shaped, the two end surfaces of the sensor mounting block are tightly attached to the inner pipe wall of the shell, the lower part of the mounting block is provided with a threaded hole, an adjusting bolt is arranged in the threaded hole at the lower part of the mounting block, the threaded hole at the lower part of the mounting block is communicated with the sensor mounting hole, and the upper end surface of the adjusting bolt is contacted with the bottom surface of the pressure sensor; the mounting position of the pressure sensor is adjusted through the adjusting bolt, the height of the pressure sensor is indirectly adjusted through the shaft pin, and the pressing sheet is a rectangular thin plate.
2. The device for measuring the clamping force of the tulip finger type isolator as claimed in claim 1, wherein the slotted hole restricts the rotation of the pressing sheet in a plane.
3. The device for measuring the clamping force of the plum-blossom-shaped contact finger type disconnecting switch according to claim 1 or 2, wherein the lower part of the shaft pin extends out of the guide sleeve, the lower part of the shaft pin extending out of the guide sleeve is provided with a spring, and the tail end of the shaft pin is provided with a limit pin to prevent the shaft pin from moving when the device for measuring the clamping force is not in a working state.
4. The device for measuring the clamping force of the isolating switch of the plum-blossom-shaped contact finger type as claimed in claim 1 or 2, wherein the front end of the housing is rounded, and the device for measuring the clamping force plays a role of guiding when the contact finger of the isolating switch is inserted, and simultaneously reduces the resistance when the contact finger is inserted.
5. The device for measuring the clamping force of the plum-blossom-shaped contact finger type disconnecting switch according to claim 1 or 2, wherein the surface of the shell is provided with threaded holes which are circumferentially arranged and used for installing an operating rod.
6. The device for measuring the clamping force of the plum-blossom-shaped contact finger type disconnecting switch according to claim 1 or 2, wherein an opening on the front end face of the shell is provided with internal threads, and the front end of the shell is connected with an end cover through the threads.
7. The device for measuring the clamping force of the isolating switch in the plum blossom-shaped contact finger type according to claim 1 or 2, wherein the pressure sensor is connected to the isolating switch comprehensive tester through a signal line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610949527.8A CN106289617B (en) | 2016-10-27 | 2016-10-27 | Plum blossom touches finger type isolator clamp force measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610949527.8A CN106289617B (en) | 2016-10-27 | 2016-10-27 | Plum blossom touches finger type isolator clamp force measuring device |
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| CN106289617A CN106289617A (en) | 2017-01-04 |
| CN106289617B true CN106289617B (en) | 2022-06-21 |
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| CN201610949527.8A Active CN106289617B (en) | 2016-10-27 | 2016-10-27 | Plum blossom touches finger type isolator clamp force measuring device |
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| CN106610326A (en) * | 2017-01-06 | 2017-05-03 | 彭彦军 | Tulip contact pressure electronic measuring instrument |
| CN107238456B (en) * | 2017-05-17 | 2019-09-13 | 河南平高电气股份有限公司 | A kind of disconnecting switch clamping force test fixture |
| CN109323787B (en) * | 2017-08-01 | 2021-08-06 | 平高集团有限公司 | Contact finger clamping force measuring device |
| CN107830962B (en) * | 2017-12-13 | 2023-12-26 | 湖南长高高压开关有限公司 | Method for monitoring temperature and clamping force of isolating switch |
| CN109341901B (en) * | 2018-10-29 | 2024-06-28 | 深圳市通意达机电设备有限公司 | Pressure detector |
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| CN110568353B (en) * | 2019-09-16 | 2024-09-10 | 长高电新科技股份公司 | Isolating switch delivery inspection assembly line |
| CN111940609A (en) * | 2020-07-23 | 2020-11-17 | 奇瑞商用车（安徽）有限公司 | Die filling precision checking device and method for stamping die |
| CN112213017A (en) * | 2020-09-16 | 2021-01-12 | 保定和易法电气科技有限公司 | Finger-touching type switch clamping force measuring device |
| CN112880896A (en) * | 2021-01-05 | 2021-06-01 | 国网内蒙古东部电力有限公司电力科学研究院 | Isolating switch contact finger pressure sensor, tester and method |
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