CN111141433A - Clamping device for tension test of petal-shaped contact - Google Patents
Clamping device for tension test of petal-shaped contact Download PDFInfo
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- CN111141433A CN111141433A CN201911320148.2A CN201911320148A CN111141433A CN 111141433 A CN111141433 A CN 111141433A CN 201911320148 A CN201911320148 A CN 201911320148A CN 111141433 A CN111141433 A CN 111141433A
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- contact
- petal
- supporting
- clamping device
- shaped
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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
Abstract
The invention provides a clamping device for a flap-shaped contact tension test, which comprises: the supporting seat is provided with an arc supporting surface, the arc supporting surface is used for supporting the peripheral surface of the flange plate of the petal-shaped contact, the supporting seat is also provided with a propping surface, the propping surface is positioned on one side of the arc supporting surface, and the propping surface is used for being matched with the bottom end surface of the flange plate in a stop manner so as to prop the bottom end surface; the positioning shaft is arranged on the abutting surface and used for extending into an inner hole of the petal-shaped contact to position the petal-shaped contact; and the pressing plate is fixed on the supporting seat and positioned on the other side of the arc-shaped supporting surface, and the pressing plate is used for pressing the top end surface of the flange plate to tightly press and fix the petal-shaped contact on the supporting seat. Has the advantages that: the clamping device provided by the invention replaces manual holding, can conveniently realize tension test of each valve contact finger of the valve-shaped contact, and has a reliable test result.
Description
Technical Field
The invention relates to a clamping device for a flap-shaped contact tension test.
Background
The petal-shaped contact is an arc contact used for arcing or arc striking when the circuit breaker is switched on or switched off, and the petal-shaped contact comprises a plurality of contact fingers distributed in a petal shape. Chinese utility model patent that bulletin number is CN201569725U discloses a detection device is used in deciliter of GIS for the action performance to the arc contact detects, and wherein the arc contact has the hole, including a plurality of lamellas distribution the contact finger and with each contact integrative flange board that links to each other of finger, be provided with the fixed orifices on the flange board, make things convenient for the installation and the fixed of arc contact.
The main performance of the petal-shaped contact is embodied in two aspects of electricity and machinery as a conductive part, wherein the mechanical performance is the most critical step for developing the arc contact, and the most important mechanical performance of the contact is the tension of a contact finger. At present, due to the lack of a proper clamping device, manual holding is mainly used when the contact is subjected to mechanical testing, so that the mechanical performance deviation of the test is large, the mechanical performance of the contact cannot be objectively reflected, and the test is unreliable.
Disclosure of Invention
The invention aims to provide a clamping device for testing the tension of a petal-shaped contact, which is convenient to detect the tension of the petal-shaped contact and reliable in testing.
In order to achieve the purpose, the clamping device for the petal-shaped contact tension test adopts the following technical scheme:
a clamping device for a petal-shaped contact tension test comprises:
the supporting seat is provided with an arc supporting surface, the arc supporting surface is used for supporting the outer peripheral surface of the flange plate of the petal-shaped contact, the supporting seat is also provided with a propping surface, the propping surface is positioned on one side of the arc supporting surface, and the propping surface is used for stopping and matching with the bottom end surface of the flange plate so as to prop against the bottom end surface;
the positioning shaft is arranged on the abutting surface and used for extending into an inner hole of the petal-shaped contact to position the petal-shaped contact;
and the pressing plate is fixed on the supporting seat and positioned on the other side of the arc-shaped supporting surface, and the pressing plate is used for pressing the top end surface of the flange plate to tightly press and fix the petal-shaped contact on the supporting seat.
The beneficial effects of the above technical scheme are that: arc holding surface on the supporting seat can support the flange board outer peripheral face of lamella form contact, supports to leaning on the bottom face that the face can supply the flange board and supports and lean on, and the location axle stretches into lamella form contact hole, can fix a position lamella form contact, fixes the clamp plate on the supporting seat at last, compresses tightly the top face of flange board, just can compress tightly the lamella form contact and fix on the supporting seat, and at this moment lamella form contact only has a rotational degree of freedom.
After the clamping device clamps the contact fingers, each petal of the petal-shaped contact head is suspended on one side of the pressing plate, and then the pressure head of the mechanical testing machine can be used for applying downward pressure to one petal of the contact fingers so as to detect the tension of the petal of the contact fingers. After detection, the pressing plate is loosened, the petal-shaped contact head is rotated, the next petal contact finger is rotated to the position below the pressure head of the mechanical testing machine, detection of the petal contact finger is carried out, and the like is repeated until detection of all the contact fingers is completed.
The clamping device provided by the invention replaces manual holding, can conveniently realize tension test of each valve contact finger of the valve-shaped contact, and has a reliable test result.
Furthermore, in order to facilitate the setting of the positioning shaft, the positioning shaft and the supporting seat are arranged in a split manner, the positioning shaft is inserted into the supporting seat, and the supporting seat is provided with a jack for inserting the positioning shaft.
Furthermore, in order to control the depth of the positioning shaft extending into the inner hole of the petal-shaped contact and avoid the influence on detection caused by excessive extension on deformation of the contact finger, the positioning shaft comprises a small-diameter section which penetrates through the insertion hole to position the petal-shaped contact, and the positioning shaft further comprises a large-diameter section which is in stop fit with the supporting seat.
Furthermore, in order to reduce the wall thickness of the supporting seat and reduce the weight, the positioning shaft can penetrate through the jack conveniently, and the supporting seat is provided with an avoiding step for avoiding the large-diameter section.
Furthermore, in order to ensure the supporting effect, the arc-shaped supporting surface is in a semi-arc shape.
Further, in order to increase the bottom end face of the flange plate and the contact area of the abutting face, the support and the clamping are guaranteed to be stable, and the top end of the arc-shaped support face is lower than the top face of the support seat.
Furthermore, in order to conveniently install the pressing plate and observe, a groove with an upward opening is formed in the pressing plate and used for avoiding the root of each petal contact finger of the petal-shaped contact.
Furthermore, for the convenient upper and lower height of adjustment supporting seat, the levelness of adjustment feeler simultaneously, lamella form contact tension test is with clamping device still includes the base, and the base setting has the stay bolt that is used for supporting the supporting seat in threaded connection on the base in the below of supporting seat.
Drawings
FIG. 1 is a diagram illustrating a state of use of a clamping device for a flap-shaped contact tension test according to the present invention;
FIG. 2 is a structural view of the support base shown in FIG. 1;
fig. 3 is an assembly structure view of the support base, the pressing plate and the positioning shaft in fig. 1.
In the figure: 1-a support seat; 11-horizontal portion; 12-a vertical portion; 13-a jack; 14-an abutment surface; 15-fixing holes; 16-an arc-shaped support surface; 17-avoiding a step; 2-pressing a plate; 3-positioning the shaft; 31-a first minor diameter section; 32-a large diameter section; 33-a second minor diameter section; 4-stay bolts; 5-a base; 6-pressing head; 7-a flange plate; 8-touch finger.
Detailed Description
One embodiment of the clamping device (hereinafter referred to as clamping device) for a flap contact tension test in the invention is shown in fig. 1, and comprises a base 5, a supporting seat 1, a pressing plate 2 and a positioning shaft 3.
Referring to fig. 2, the supporting seat 1 includes a horizontal portion 11 and a vertical portion 12, which are vertically in an L-shaped configuration. The vertical part 12 is provided with a semi-arc-shaped supporting surface 16, and the radius of the arc-shaped supporting surface 16 is matched with that of the flange plate 7 of the petal-shaped contact, and is used for supporting the peripheral surface of the flange plate 7. The vertical portion 12 is further provided with an abutting surface 14, the abutting surface 14 is located on one side of the arc-shaped supporting surface 16 and is perpendicular to the arc-shaped supporting surface 16, and the abutting surface 14 is used for stop-matching with the bottom end surface of the flange plate 7 so as to allow the bottom end surface to abut against. The top end of the arc-shaped support surface 16 is lower than the top surface of the vertical portion 12, so that the contact area between the bottom end surface of the flange plate 7 and the abutting surface 14 can be increased.
The positioning shaft 3 is inserted and assembled on the supporting seat 1, specifically, an insertion hole 13 for inserting the positioning shaft 3 is arranged on the abutting surface 14, and the insertion hole 13 is a through hole. As shown in fig. 3, the positioning shaft 3 is a stepped shaft, and includes a first small diameter section 31, a large diameter section 32, and a second small diameter section 33, where the first small diameter section 31 passes through the insertion hole 31 and is configured to extend into an inner hole of the flap contact to position the flap contact.
The large diameter section 32 is in stop fit with the side surface of the vertical portion 12 to limit the penetration length of the first small diameter section 31 out of the insertion hole 31, and further limit the depth of the positioning shaft 3 extending into the inner hole of the flap-shaped contact. Otherwise, if the length of the first small diameter section 31 is too long, the contact finger 8 may press against the first small diameter section 31 during deformation, thereby affecting the deformation of the contact finger 8 and affecting the tension test.
The avoidance step 17 is arranged on the vertical portion 12, the avoidance step 17 can avoid the large-diameter section 32, the wall thickness of the vertical portion 12 is reduced, the weight of the supporting seat can be reduced, the length of the first small-diameter section 31 can be shortened, and the positioning shaft 3 can conveniently penetrate through the insertion hole 13 while the weight of the positioning shaft is reduced.
The pressure plate 2 is fixed to the vertical portion 12 by bolts (not shown in the figure), and the vertical portion 12 is provided with two fixing holes 15. The pressing plate 2 is located on the other side of the arc-shaped supporting surface 16, and the pressing plate 2 is used for pressing the top end surface of the flange plate 7 to tightly press and fix the petal-shaped contact on the supporting seat. The pressing plate 2 is provided with a groove with an upward opening, and the groove is used for avoiding the root of each petal contact finger 8 of the petal-shaped contact. In addition, the pressing plate of this form also more facilitates the use, can fix the pressing plate on the supporting seat in advance during the use, and flange plate 7 of lamella form contact can place on arc holding surface 16 by top-down, and when taking off lamella form contact, the pressing plate also need not to pull down, only need loosen the pressing plate can.
The length of the second small diameter section 33 is larger than that of the first small diameter section 31, after the positioning shaft 3 is inserted into the vertical part 12, the second small diameter section 33 overhangs the outer side of the vertical part 12, and after the petal-shaped contacts are clamped and fixed, the petal-shaped contact fingers 8 overhang the other side of the vertical part 12, so that the whole clamping device can be kept balanced as much as possible.
The base 5 sets up in the below of supporting seat 1, and threaded connection has a plurality of stay bolts 4 that are used for supporting seat 1 on the base 5, and stay bolt 4 and horizontal part 11 support contact can adjust the upper and lower height of supporting seat 1 to the adjustment touches the distance of finger 8 for the pressure head 6 of dynamometer (not shown in the figure), and the adjustment touches the levelness of finger 8.
When the clamping device is used, the flange plate 7 of the petal-shaped contact is placed on the arc-shaped supporting surface 16, the positioning shaft 3 is inserted to position the petal-shaped contact, the petal-shaped contact is pressed and fixed on the clamping device by the pressing plate 2, and then the installation of the petal-shaped contact is completed. The position of the clamping device is adjusted, so that the contact finger 8 is positioned under the pressure head 6, the vertical height of the supporting seat 1 is adjusted through the supporting bolt 4, the distance between the contact finger 8 and the pressure head 6 is adjusted, and the contact finger 8 is in a horizontal state.
After levelness adjustment is completed, pressure measurement can be performed on the flap-shaped contact, the pressure head 6 of the force measuring machine is adjusted to gradually fall to the contact finger testing position, the force measuring machine stops continuing to fall when reading is displayed by the force measuring machine, zero calibration adjustment is performed, then the pressure head continues to fall to the required height, and then the reading of the force measuring machine is read, and pressure measurement of one flap of contact finger is completed. And then loosening the pressing plate, rotating the petal-shaped contact head, and repeating the steps to test the next contact finger until the pressure measurement of all the contact fingers is completed. The clamping device provided by the invention replaces manual holding, can conveniently realize tension test of each valve contact finger of the valve-shaped contact, and has a reliable test result.
In other embodiments of the clamping device for the flap-shaped contact tension test, the clamping device does not include a base, and the vertical height of the supporting seat and the levelness of the contact finger are not adjustable.
In other embodiments of the clamping device for the petal-shaped contact tension test, a through hole may be formed in the pressing plate, each petal-shaped contact finger passes through the through hole in the pressing plate when the pressing plate is installed, then the pressing plate is fixed on the supporting base, and when the petal-shaped contact is removed, the pressing plate needs to be removed first.
In other embodiments of the clamping device for a flap contact tension test, the top end of the arc-shaped supporting surface and the top surface of the supporting seat may be flush.
In other embodiments of the clamping device for a flap-shaped contact tension test, the arc-shaped supporting surface may be a minor arc smaller than a semicircle.
In other embodiments of the clamping device for the petal-shaped contact tension test, the support seat may not be provided with an avoiding step, and the first small-diameter section needs to be slightly longer.
In other embodiments of the clamping device for a flap-shaped contact tension test, the positioning shaft may be formed by only two sections, that is, a small-diameter section and a large-diameter section, the small-diameter section passes through the insertion hole on the supporting seat, and the large-diameter section is in stop fit with the supporting seat.
In other embodiments of the clamping device for a flap contact tension test, the positioning shaft may be a constant diameter shaft, and the length of the positioning shaft passing through the supporting seat needs to be controlled when the positioning shaft is installed.
In other embodiments of the clamping device for a flap-shaped contact tension test, the positioning shaft and the supporting seat may be integrated, and the positioning shaft is convexly disposed on the abutting surface.
In other embodiments of the clamping device for a flap-shaped contact tension test, the horizontal portion and the vertical portion of the supporting seat may also form an inverted T-shaped structure, or the supporting seat is U-shaped and includes a horizontal portion and two vertical portions.
In other embodiments of the clamping device for the flap-shaped contact tension test, the pressing plate and the supporting seat may be fixed by a snap connection.
Claims (8)
1. The utility model provides a clamping device is used in tension test of lamella form contact which characterized in that includes:
the supporting seat is provided with an arc supporting surface, the arc supporting surface is used for supporting the outer peripheral surface of the flange plate of the petal-shaped contact, the supporting seat is also provided with a propping surface, the propping surface is positioned on one side of the arc supporting surface, and the propping surface is used for stopping and matching with the bottom end surface of the flange plate so as to prop against the bottom end surface;
the positioning shaft is arranged on the abutting surface and used for extending into an inner hole of the petal-shaped contact to position the petal-shaped contact;
and the pressing plate is fixed on the supporting seat and positioned on the other side of the arc-shaped supporting surface, and the pressing plate is used for pressing the top end surface of the flange plate to tightly press and fix the petal-shaped contact on the supporting seat.
2. The clamping device for a tension test of a flap contact as claimed in claim 1, wherein the positioning shaft and the supporting base are separately provided, the positioning shaft is inserted into the supporting base, and the supporting base is provided with an insertion hole into which the positioning shaft is inserted.
3. The clamping device for a tension test of a flap contact as claimed in claim 2, wherein the positioning shaft comprises a small diameter section that passes through the insertion hole to position the flap contact, and the positioning shaft further comprises a large diameter section that is in stop fit with the supporting base.
4. The clamping device for the tensile test of the flap contact as claimed in claim 3, wherein the supporting seat is provided with an avoiding step for avoiding the large-diameter section.
5. The clamping device for the petal contact tension test according to any one of claims 1 to 4, wherein the arc-shaped supporting surface is a semi-arc shape.
6. The clamping device for a petal contact tension test according to any one of claims 1 to 4, wherein the top end of the arc-shaped supporting surface is lower than the top surface of the supporting seat.
7. The clamping device for the petal-shaped contact tension test according to any one of claims 1 to 4, wherein the pressing plate is provided with a groove with an upward opening, and the groove is used for avoiding the root of each petal contact finger of the petal-shaped contact.
8. The clamping device for the petal contact tension test as claimed in any one of claims 1 to 4, wherein the clamping device for the petal contact tension test further comprises a base, the base is disposed below the supporting base, and a supporting bolt for supporting the supporting base is screwed on the base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911320148.2A CN111141433B (en) | 2019-12-19 | 2019-12-19 | Clamping device for tension test of petal-shaped contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911320148.2A CN111141433B (en) | 2019-12-19 | 2019-12-19 | Clamping device for tension test of petal-shaped contact |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111141433A true CN111141433A (en) | 2020-05-12 |
| CN111141433B CN111141433B (en) | 2021-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911320148.2A Active CN111141433B (en) | 2019-12-19 | 2019-12-19 | Clamping device for tension test of petal-shaped contact |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111141433B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5103681A (en) * | 1990-07-09 | 1992-04-14 | Westinghouse Electric Corp. | Diametral clamp element for cylindrical members |
| CN204269278U (en) * | 2014-12-22 | 2015-04-15 | 无锡永凯达齿轮有限公司 | The collecting unit of motor car engine belt dynamic tension |
| CN104741854A (en) * | 2015-03-27 | 2015-07-01 | 王小玲 | Machining clamping device for circuit breaker contact |
| CN105547528A (en) * | 2016-01-28 | 2016-05-04 | 天一同益电气股份有限公司 | Testing device capable of testing work pressure of plum-blossom-shaped contact |
| CN205828211U (en) * | 2016-06-28 | 2016-12-21 | 湖南长高成套电器有限公司 | A kind of chopper Mume flower contact erecting device |
| CN206363908U (en) * | 2016-12-30 | 2017-07-28 | 无锡新宏泰电器科技股份有限公司 | A kind of moving contact of breaker clamp structure |
| CN110293511A (en) * | 2019-06-14 | 2019-10-01 | 平高集团有限公司 | A kind of moving arcing contact handling tooling |
| CN209589306U (en) * | 2019-03-15 | 2019-11-05 | 广西电网有限责任公司桂林供电局 | A kind of plum blossom fingertip spring compression force checking device |
-
2019
- 2019-12-19 CN CN201911320148.2A patent/CN111141433B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5103681A (en) * | 1990-07-09 | 1992-04-14 | Westinghouse Electric Corp. | Diametral clamp element for cylindrical members |
| CN204269278U (en) * | 2014-12-22 | 2015-04-15 | 无锡永凯达齿轮有限公司 | The collecting unit of motor car engine belt dynamic tension |
| CN104741854A (en) * | 2015-03-27 | 2015-07-01 | 王小玲 | Machining clamping device for circuit breaker contact |
| CN105547528A (en) * | 2016-01-28 | 2016-05-04 | 天一同益电气股份有限公司 | Testing device capable of testing work pressure of plum-blossom-shaped contact |
| CN205828211U (en) * | 2016-06-28 | 2016-12-21 | 湖南长高成套电器有限公司 | A kind of chopper Mume flower contact erecting device |
| CN206363908U (en) * | 2016-12-30 | 2017-07-28 | 无锡新宏泰电器科技股份有限公司 | A kind of moving contact of breaker clamp structure |
| CN209589306U (en) * | 2019-03-15 | 2019-11-05 | 广西电网有限责任公司桂林供电局 | A kind of plum blossom fingertip spring compression force checking device |
| CN110293511A (en) * | 2019-06-14 | 2019-10-01 | 平高集团有限公司 | A kind of moving arcing contact handling tooling |
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| CN111141433B (en) | 2021-10-08 |
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