CN210487924U - Testing device of vacuum circuit breaker - Google Patents
Testing device of vacuum circuit breaker Download PDFInfo
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- CN210487924U CN210487924U CN201921365130.XU CN201921365130U CN210487924U CN 210487924 U CN210487924 U CN 210487924U CN 201921365130 U CN201921365130 U CN 201921365130U CN 210487924 U CN210487924 U CN 210487924U
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- 238000012360 testing method Methods 0.000 title claims abstract description 46
- 238000000429 assembly Methods 0.000 claims abstract description 3
- 230000000712 assembly Effects 0.000 claims abstract description 3
- 239000000203 mixture Substances 0.000 claims 1
- 239000002994 raw material Substances 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 6
- 238000009413 insulation Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 3
- 239000012212 insulator Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
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Abstract
The utility model provides a testing device of a vacuum circuit breaker, which comprises an installation bracket and a testing device, wherein the installation bracket is provided with a plurality of over travel spring assemblies which can be connected with an operating mechanism of the vacuum circuit breaker; the horizontal positioning structure and the longitudinal positioning structure are fixed between the mounting bracket and the base of the vacuum circuit breaker and fixedly connect the mounting bracket and the base. Because a plurality of over travel spring unit spare are installed in advance on the installing support, test device only need place the installing support on the base when the assembly, then through horizontal location structure and longitudinal positioning structure with installing support and base fixed connection, only need like this to the installing support carry out the dismouting can, compare with the mode that prior art need install three insulation barrel subassembly respectively in the base, the dismouting is swift convenient, and test efficiency is high.
Description
Technical Field
The utility model relates to a vacuum circuit breaker technical field, concretely relates to vacuum circuit breaker's test device.
Background
The vacuum circuit breaker is an indoor power distribution device suitable for a 3-10 kV and 50Hz three-phase alternating-current system, has the advantages of small volume, light weight, suitability for frequent operation and no need of maintenance for arc extinction, and is widely applied to industrial and mining enterprises, power plants, transformer substations and other use places requiring no oiling, less maintenance and frequent operation.
At present, after an operating mechanism and a three-phase insulating cylinder assembly of a vacuum circuit breaker are assembled into a whole machine, the operating mechanism needs to be subjected to a switching-on and switching-off test for about 200 times so as to ensure the working reliability of the operating mechanism, an over-travel spring of the three-phase insulating cylinder assembly stores energy when the operating mechanism is switched on and releases energy when the operating mechanism is switched off, and a switching-off acting force is provided for the operating mechanism. In the test process, if the operating mechanism is found to be faulty, the three-phase insulating cylinder assembly needs to be dismantled first, and then the operating mechanism needs to be checked. As shown in fig. 6 and 7, the bottom and the side of each phase insulator cylinder assembly 8 are respectively fixed on the base 2 and the side plate 9 of the vacuum circuit breaker by bolts, and due to the large number of bolts and the limitation of the positions of the bolts, the three-phase insulator cylinder assembly needs about half an hour in one assembling and disassembling process, which wastes time and labor and greatly reduces the test efficiency.
SUMMERY OF THE UTILITY MODEL
Therefore, the to-be-solved technical problem of the utility model lies in overcoming the defect that vacuum circuit breaker operating device test efficiency among the prior art is low to a vacuum circuit breaker's that test efficiency is high test device is provided.
To this end, the utility model provides a testing device of a vacuum circuit breaker, which comprises,
the mounting bracket is provided with a plurality of over travel spring assemblies which can be connected with an operating mechanism of the vacuum circuit breaker;
and the horizontal positioning structure and the longitudinal positioning structure are fixed between the mounting bracket and the base of the vacuum circuit breaker and fixedly connect the mounting bracket and the base.
The installing support include with base parallel arrangement install overtravel spring unit's mounting panel to and divide and locate mounting panel both sides, rather than the perpendicular support arm that sets up, horizontal location structure installs on the support arm, vertical location structure installs on the mounting panel.
The horizontal positioning structure comprises a first positioning hole, a second positioning hole, a positioning block and a locking structure, wherein the first positioning hole is respectively formed on two side plates at two sides of the base;
the second positioning hole is formed in the support arm and is opposite to the first positioning hole;
the positioning block penetrates through the second positioning hole and then is connected with the first positioning hole in an interference fit manner;
and the locking structure is used for locking and connecting the positioning block and the support arm when in a test position.
The locking structure comprises a positioning column and a locking rod,
the positioning column is arranged on the support arm and is provided with a hole cavity communicated with the second positioning hole and used for the positioning block to move, and an L-shaped through groove formed in the outer wall of the positioning column, wherein the L-shaped through groove comprises a first section arranged in parallel with the moving direction of the positioning block and a second section arranged in an arc shape along the circumferential direction of the positioning column;
the locking rod penetrates through the L-shaped through groove and is fixedly connected with the positioning block, and the locking rod can reciprocate along the first section and the second section of the L-shaped through groove.
The longitudinal positioning structure includes:
the threaded hole is arranged on the mounting plate;
and the screw rod penetrates through the threaded hole and is connected with the base in an abutting mode, and a cushion block assembly in press fit connection with the base is arranged at the bottom of the screw rod.
The cushion block assembly comprises a rigid cushion block matched and screwed with the screw rod and an elastic cushion block arranged between the rigid cushion block and the base, and the area of the elastic cushion block is larger than that of the rigid cushion block.
And a positioning plate is arranged on the surface of the support arm facing to the other support arm, and a third positioning hole which is arranged opposite to the threaded hole and is used for the screw rod to penetrate is formed in the positioning plate.
The joint of the screw rod, the mounting plate and the positioning plate is provided with a sheath sleeved on the screw rod.
The over travel spring assembly comprises a connecting rod, a first spring, a driving block and a second spring,
the connecting rod is vertically arranged on the mounting plate and is provided with a first rod part which is arranged between the mounting plate and the base and is in matched connection with the crank arm of the operating mechanism, and a second rod part which extends out of the top of the mounting plate;
the first spring and the driving block are sleeved on the first rod part, and the driving block is driven by the mounting plate to compress the first spring;
and the second spring is sleeved on the second rod part, one end of the second spring is abutted against the mounting plate, and the other end of the second spring is abutted against a gasket arranged at the end part of the second rod part.
The utility model discloses technical scheme has following advantage:
1. the utility model provides a vacuum circuit breaker's test device, including installing support, horizontal location structure and longitudinal register structure, the installing support is equipped with a plurality of over travel spring assembly that can be connected with vacuum circuit breaker's operating device, and horizontal location structure and longitudinal register structure are fixed between installing support and vacuum circuit breaker's base, with installing support and base fixed connection. Because a plurality of over travel spring unit spare are installed in advance on the installing support, test device only need place the installing support on the base when the assembly, then through horizontal location structure and longitudinal positioning structure with installing support and base fixed connection, only need like this to the installing support carry out the dismouting can, compare with the mode that prior art need install three insulation barrel subassembly respectively in the base, the dismouting is swift convenient, and test efficiency is high.
2. The utility model provides a vacuum circuit breaker's test device, installing support include with base parallel arrangement install the mounting panel of over travel spring unit to and divide the support arm of locating the mounting panel both sides, rather than the perpendicular setting, horizontal location structural mounting is on the support arm, and longitudinal orientation structural mounting is on the mounting panel. During disassembly and assembly, the horizontal positioning structure and the longitudinal positioning structure are only needed to be positioned and installed on the two sides and the upper side of the base respectively, and compared with a mode that an installer needs to install bolts from the bottom of the base in the prior art, the method is more convenient for the installer to operate, and improves the test efficiency; and, can fix a position the installation support in horizontal direction and longitudinal direction respectively through horizontal location structure and longitudinal positioning structure, the support stability after the installation is good, and the over travel spring is high with operating device's connection stability for experimental effectual.
3. The utility model provides a vacuum circuit breaker's test device, horizontal positioning structure includes: the first positioning holes are respectively formed in the two side plates on the two sides of the base; the second positioning hole is formed on the support arm and is opposite to the first positioning hole; the positioning block penetrates through the second positioning hole and then is connected with the first positioning hole in an interference fit manner; and the locking structure is used for locking and connecting the positioning block and the support arm when in a test position. Compared with the mode that the bolt needs to be disassembled and assembled through a wrench in the prior art, the positioning block and the locking structure have the advantages of simple structure and convenience in disassembly and assembly.
4. The utility model provides a vacuum circuit breaker's test device, the locking structure includes: the positioning column is arranged on the support arm and is provided with a hole cavity communicated with the second positioning hole and used for the movement of the positioning block and an L-shaped through groove formed on the outer wall of the positioning column, and the L-shaped through groove comprises a first section arranged in parallel with the movement direction of the positioning block and a second section arranged in an arc shape along the circumferential direction of the positioning column; the locking rod penetrates through the L-shaped through groove and is fixedly connected with the positioning block, and the locking rod can reciprocate along the first section and the second section of the L-shaped through groove. During the experiment, the manual drive locking lever removes along the first section that the groove was led to the L shape, drives the first locating hole interference fit of locating piece and base and is connected, then removes along the second section that the groove was led to the L shape, and the spacing cooperation of reference column on locking lever and the support arm makes support arm and sideboard fixed connection on the one hand like this, and on the other hand can inject the position of locating piece, guarantees that the locating piece can not be because of vibrations and the separation of first locating hole that brings when operating device divide-shut brake is experimental, and the reliability is higher.
5. The utility model provides a vacuum circuit breaker's test device, longitudinal positioning structure includes: the threaded hole is arranged on the mounting plate; and the screw penetrates through the threaded hole and is connected with the base in an abutting mode, and the bottom of the screw is provided with a cushion block assembly in press fit connection with the base. During the experiment, screw rod drive cushion subassembly and base pressfitting butt to guarantee that the support arm of installing support sets up with the base is perpendicular, owing to can follow the base top operation screw rod, more make things convenient for installer to operate, improved test efficiency.
6. The utility model provides a vacuum circuit breaker's test device, the gasket subassembly include with the rigid cushion of screw rod cooperation spiro union to and set up the elastic cushion between rigid cushion and base, elastic cushion's area is greater than the area of rigid cushion. The contact area between the screw rod and the base can be increased through the rigid cushion block and the elastic cushion block, so that the mounting between the mounting bracket and the base is firmer, in addition, the elastic cushion block can play a certain buffering role, the screw rod is not easy to break under the long-time vibration effect, and the service life of the screw rod is prolonged.
7. The utility model provides a vacuum circuit breaker's test device is provided with the locating plate on the face of support arm orientation another support arm, and the shaping has the third locating hole that sets up relatively with the screw hole on the locating plate, wear to establish with the confession screw rod. The locating piece is connected with the middle part cooperation location of screw rod to under long-time vibrations effect, guarantee that the screw rod can set up with the base is perpendicular, make the installation more firm between installing support and the base.
8. The utility model provides a vacuum circuit breaker's test device, the sheath on the screw rod is located to the screw rod and the combination department of mounting panel and locating plate has the cover, under long-time vibrations effect, guarantees the difficult fracture of screw rod, has prolonged life.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a perspective view of a testing device of an operating mechanism of a vacuum circuit breaker of the present invention mounted on the vacuum circuit breaker;
FIG. 2 is an exploded view of the testing apparatus and the vacuum interrupter of FIG. 1;
fig. 3 is a perspective view of a testing device of the operating mechanism of the vacuum circuit breaker of the present invention;
FIG. 4 is a cross-sectional view of FIG. 3;
FIG. 5 is an enlarged schematic view of portion A of FIG. 3;
fig. 6 is a perspective view of a prior art vacuum circuit breaker;
fig. 7 is an exploded view of fig. 6.
Description of reference numerals: 1. mounting a bracket; 11. mounting a plate; 12. a support arm; 13. a threaded hole; 14. positioning a plate; 2. a base; 20. a side plate; 21. a first positioning hole; 3. positioning blocks; 31. a lock lever; 4. a positioning column; 41. an L-shaped through groove; 5. a screw; 51. a rigid cushion block; 52. an elastic cushion block; 53. a sheath; 6. a connecting rod; 61. a first rod portion; 62. a second rod portion; 63. a first spring; 64. a drive block; 65. a second spring; 7. a crank arm; 8. an insulator cartridge assembly; 9. side plates.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
Examples
The embodiment provides a testing device of a vacuum circuit breaker, which comprises a mounting bracket 1, an over travel spring assembly, a horizontal positioning structure and a longitudinal positioning structure, as shown in fig. 1 and 2.
Installing support 1, as shown in fig. 3, be equipped with a plurality of overtravel spring unit that can be connected with vacuum circuit breaker's operating device, installing support 1 include with 2 parallel arrangement's of base install overtravel spring unit's mounting panel 11 to and divide and locate 11 both sides of mounting panel, rather than the perpendicular support arm 12 that sets up, mounting panel 11 is located base 2 top, horizontal positioning structure installs on support arm 12, vertical positioning structure installs on mounting panel 11.
Over travel spring assembly, as shown in fig. 4, includes: the connecting rod 6 is vertically arranged on the mounting plate 11 and is provided with a first rod part 61 which is arranged between the mounting plate 11 and the base 2 and is matched and connected with the crank arm 7 of the operating mechanism, and a second rod part 62 which extends out of the top of the mounting plate 11, and the bottom of the second rod part 62 is connected with the crank arm 7 of the operating mechanism through a bolt; the first spring 63 and the driving block 64 are sleeved on the first rod part 61, and the driving block 64 is driven by the mounting plate 11 to compress the first spring 63; the second spring 65 is sleeved on the second rod portion 62, one end of the second spring abuts against the mounting plate 11, and the other end of the second spring abuts against a gasket arranged at the end portion of the second rod portion 62. The over travel spring assembly is equivalent to the over travel spring assembly in the insulating cylinder assembly, and stores energy when the operating mechanism is switched on and releases energy when the operating mechanism is switched off so as to provide switching-off acting force for the operating mechanism.
The horizontal positioning structure, as shown in fig. 4 and 5, includes: the first positioning holes 21 are respectively formed on the two side plates 20 on the two sides of the base 2; the second positioning hole is formed on the support arm 12 and is opposite to the first positioning hole 21; the positioning block 3 penetrates through the second positioning hole and then is connected with the first positioning hole 21 in an interference fit manner; the locking structure, when experimental position, with locating piece 3 with support arm 12 locking connection, the locking structure includes: the positioning column 4 is arranged on the support arm 12 and is provided with a hole cavity communicated with the second positioning hole and used for moving the positioning block 3, and an L-shaped through groove 41 formed in the outer wall of the positioning column 4, wherein the L-shaped through groove 41 comprises a first section arranged in parallel with the moving direction of the positioning block 3 and a second section arranged in an arc shape along the circumferential direction of the positioning column 4; the lock rod 31 penetrates through the L-shaped through groove 41 and is fixedly connected with the positioning block 3, and the lock rod 31 can reciprocate along the first section and the second section of the L-shaped through groove 41.
The longitudinal positioning structure, as shown in fig. 4, includes a screw 5, a pad assembly, and a positioning plate 14.
The screw rod 5 penetrates through the threaded hole 13 formed in the mounting plate 11 and then is connected with the base 2 in a propping mode, a cushion block assembly connected with the base 2 in a pressing mode is arranged at the bottom of the screw rod 5, and a sheath 53 sleeved on the screw rod 5 is arranged at the joint of the screw rod 5, the mounting plate 11 and the positioning plate 14.
The cushion block assembly comprises a rigid cushion block 51 matched and screwed with the screw rod 5, and an elastic cushion block 52 arranged between the rigid cushion block 51 and the base 2, wherein the area of the elastic cushion block 52 is larger than that of the rigid cushion block 51, and in the embodiment, the elastic cushion block 52 can be made of elastic materials such as rubber.
The positioning plate 14 is disposed on a surface of one of the support arms 12 facing the other support arm 12, and a third positioning hole is formed in the positioning plate 14 and is opposite to the threaded hole 13 for the screw 5 to pass through.
As an alternative embodiment, the positioning block 3 comprises a first section that is in interference fit with the cavity wall of the positioning column 4, and a second section that is in interference fit with the first positioning hole 21 of the sideboard 20.
The utility model discloses a vacuum circuit breaker's test device, because a plurality of over travel spring unit spare are preinstallation on installing support 1, test device only needs to place installing support 1 on base 2 when the assembly, then through horizontal positioning structure and longitudinal positioning structure with installing support 1 and base 2 fixed connection, only need like this to carry out the dismouting to installing support 1 can, need to install three insulation cylinder subassembly respectively in the mode of base with prior art, the dismouting is swift convenient, and test efficiency is high.
The utility model discloses a vacuum circuit breaker's test device's installation as follows:
as shown in fig. 1, the mounting bracket 1 is firstly placed on the base 2, the over travel spring assembly is fixedly connected with the corresponding crank arm 7 of the operating mechanism, then the lock rods 31 on the left side and the right side drive the positioning block 3 to be in interference fit connection with the first positioning hole 21 on the side plate 20, and then the screw rod 5 is driven to enable the cushion block assembly to be in press fit and abut against the base 2.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.
Claims (9)
1. The utility model provides a vacuum circuit breaker's test device which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
the mounting bracket (1) is provided with a plurality of over travel spring assemblies which can be connected with an operating mechanism of the vacuum circuit breaker;
the horizontal positioning structure and the longitudinal positioning structure are fixed between the mounting bracket (1) and a base (2) of the vacuum circuit breaker, and the mounting bracket (1) is fixedly connected with the base (2).
2. The testing apparatus of the vacuum circuit breaker according to claim 1, wherein: installing support (1) include with base (2) parallel arrangement install overtravel spring unit's mounting panel (11), and divide and locate mounting panel (11) both sides, rather than perpendicular support arm (12) that set up, horizontal location structure installs on support arm (12), vertical location structure installs on mounting panel (11).
3. The testing apparatus of the vacuum circuit breaker according to claim 2, wherein: the horizontal positioning structure includes:
the first positioning holes (21) are respectively formed in the two side plates (20) on the two sides of the base (2);
the second positioning hole is formed in the support arm (12) and is opposite to the first positioning hole (21);
the positioning block (3) penetrates through the second positioning hole and then is connected with the first positioning hole (21) in an interference fit manner;
and the locking structure is used for locking and connecting the positioning block (3) and the support arm (12) when in a test position.
4. The testing apparatus of the vacuum circuit breaker according to claim 3, wherein: the locking structure includes:
the positioning column (4) is arranged on the support arm (12) and is provided with a hole cavity communicated with the second positioning hole and used for moving the positioning block (3), and an L-shaped through groove (41) formed in the outer wall of the positioning column (4), wherein the L-shaped through groove (41) comprises a first section arranged in parallel to the moving direction of the positioning block (3) and a second section arranged in an arc shape along the circumferential direction of the positioning column (4);
the locking rod (31) penetrates through the L-shaped through groove (41) and is fixedly connected with the positioning block (3), and the locking rod (31) can reciprocate along the first section and the second section of the L-shaped through groove (41).
5. The testing apparatus of the vacuum circuit breaker according to claim 4, wherein: the longitudinal positioning structure includes:
a threaded hole (13) provided in the mounting plate (11);
the screw rod (5) penetrates through the threaded hole (13) and then is connected with the base (2) in an abutting mode, and a cushion block assembly connected with the base (2) in a pressing mode is arranged at the bottom of the screw rod (5).
6. The testing apparatus of the vacuum circuit breaker according to claim 5, wherein: the cushion block assembly comprises a rigid cushion block (51) matched and screwed with the screw (5), and an elastic cushion block (52) arranged between the rigid cushion block (51) and the base (2), wherein the area of the elastic cushion block (52) is larger than that of the rigid cushion block (51).
7. The testing device of the vacuum circuit breaker according to claim 5 or 6, characterized in that: the surface of the support arm (12) facing the other support arm (12) is provided with a positioning plate (14), and a third positioning hole which is arranged opposite to the threaded hole (13) and is used for the screw rod (5) to penetrate is formed in the positioning plate (14).
8. The testing apparatus of the vacuum circuit breaker according to claim 7, wherein: the joint of the screw rod (5) and the mounting plate (11) and the positioning plate (14) is provided with a sheath (53) sleeved on the screw rod (5).
9. The testing apparatus of the vacuum circuit breaker according to claim 8, wherein: the over travel spring assembly includes:
the connecting rod (6) is vertically arranged on the mounting plate (11) and is provided with a first rod part (61) which is arranged between the mounting plate (11) and the base (2) and is matched and connected with a crank arm (7) of the operating mechanism, and a second rod part (62) which extends out of the top of the mounting plate (11);
the first spring (63) and the driving block (64) are sleeved on the first rod part (61), and the driving block (64) is driven by the mounting plate (11) to compress the first spring (63);
and the second spring (65) is sleeved on the second rod part (62), one end of the second spring is abutted against the mounting plate (11), and the other end of the second spring is abutted against a gasket arranged at the end part of the second rod part (62).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921365130.XU CN210487924U (en) | 2019-08-21 | 2019-08-21 | Testing device of vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921365130.XU CN210487924U (en) | 2019-08-21 | 2019-08-21 | Testing device of vacuum circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210487924U true CN210487924U (en) | 2020-05-08 |
Family
ID=70537113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921365130.XU Withdrawn - After Issue CN210487924U (en) | 2019-08-21 | 2019-08-21 | Testing device of vacuum circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210487924U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110441678A (en) * | 2019-08-21 | 2019-11-12 | 巨邦集团有限公司 | A kind of experimental rig of vacuum circuit breaker |
-
2019
- 2019-08-21 CN CN201921365130.XU patent/CN210487924U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110441678A (en) * | 2019-08-21 | 2019-11-12 | 巨邦集团有限公司 | A kind of experimental rig of vacuum circuit breaker |
| CN110441678B (en) * | 2019-08-21 | 2024-05-03 | 巨邦集团有限公司 | Test device of vacuum circuit breaker |
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Granted publication date: 20200508 Effective date of abandoning: 20240503 |