CN211992537U - Vice type isolating switch contact finger auxiliary clamping device - Google Patents
Vice type isolating switch contact finger auxiliary clamping device Download PDFInfo
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- CN211992537U CN211992537U CN201922421039.1U CN201922421039U CN211992537U CN 211992537 U CN211992537 U CN 211992537U CN 201922421039 U CN201922421039 U CN 201922421039U CN 211992537 U CN211992537 U CN 211992537U
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- 238000000034 method Methods 0.000 claims abstract description 6
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- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000009413 insulation Methods 0.000 description 8
- 230000009471 action Effects 0.000 description 7
- 230000008878 coupling Effects 0.000 description 7
- 238000010168 coupling process Methods 0.000 description 7
- 238000005859 coupling reaction Methods 0.000 description 7
- 238000009434 installation Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 239000012212 insulator Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
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Abstract
The utility model discloses a vice formula isolator touches and indicates auxiliary clamping device, including the device main part, the device main part is provided with: the two clamping ends comprise a movable first clamping end and a fixed second clamping end; the moving mechanism is used for moving the first clamping end to enable the first clamping end to be close to or far away from the second clamping end; the locking mechanism can lock the first clamping end in the moving process of the first clamping end; technicians can realize the disassembly and the assembly of the auxiliary clamping device by operating the locking mechanism and the moving mechanism by using the two insulating rods, and the operation is simple and convenient; meanwhile, the disassembly and the assembly are carried out according to the steps, so that parts of the whole auxiliary clamping device cannot fall off or pop up easily, and the hidden danger that the parts collapse and fly to hurt people is eliminated.
Description
Technical Field
The utility model belongs to the technical field of the switch, concretely relates to vice formula isolator touches and indicates auxiliary clamping device.
Background
In an actual power transmission and distribution system, the clamp type isolating switch is widely applied to a transformer substation by virtue of the unique advantages of the structure. However, in the actual operation of the substation, as the operation time of the equipment increases, the clamping force at the contact finger of the contact is not enough due to the influence of series factors such as the looseness of parts and the change of the environment. The clamp force at the contact finger position is insufficient, so that the through-current capacity of a clamp area can be directly influenced, the temperature of the area is overhigh, the burning loss of the isolating switch can be caused under the serious condition, and therefore the power failure maintenance is needed when the condition of high temperature is found. The power supply system of the power grid in China is huge, the influence among all nodes is close, when the system has large operation load but needs to be overhauled in a power failure, the power supply system has to be switched off and limited, and the reliability of the power supply of the power grid is seriously influenced. For the above reasons, it is widely demanded to provide a solution that can perform maintenance operation directly under an electrified condition and temporarily solve the problem of insufficient clamping force at the contact finger of the contact.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a vice formula isolator touches and indicates auxiliary clamping device, and the dismouting is electrified alone to the easy access personnel to can reduce its intensity of labour.
According to the utility model discloses vice formula isolator touches and indicates auxiliary clamping device, including the device main part, the device main part is provided with:
the two clamping ends comprise a movable first clamping end and a fixed second clamping end;
the moving mechanism is used for moving the first clamping end to enable the first clamping end to be close to or far away from the second clamping end;
the locking mechanism can lock the first clamping end in the moving process of the first clamping end.
According to the utility model discloses vice formula isolator touches and indicates auxiliary clamping device has following technological effect at least:
the utility model provides a vice formula isolator touches and indicates supplementary clamping device for supplementary clamp pincers formula isolator's contact touches and indicates, touches the clamp force that indicates department through the improvement contact and guarantees the stability of nodal connection. The dismounting method of the whole auxiliary clamping device is simple, the technical personnel can realize dismounting of the auxiliary clamping device by operating the locking mechanism and the moving mechanism by utilizing the two insulating rods, the operation is simple and convenient, and manpower and material resources required by maintenance are greatly saved; in addition, the parts of the auxiliary clamping device for the contact finger of the whole vice type disconnecting switch are closely connected, dismounting is required to be carried out according to steps, otherwise dismounting cannot be completed, parts of the whole auxiliary clamping device cannot easily fall off or pop up, and the hidden danger that the parts collapse and fly to hurt people is eliminated.
According to the utility model discloses a some embodiments, moving mechanism includes coupling assembling and reset assembly, coupling assembling's one end is connected first exposed core, the other end is worn to establish on the second exposed core and be provided with a detachable locating piece at the tip, reset assembly sets up between locating piece and the second exposed core to realize stabilizing reset function.
According to the utility model discloses a some embodiments, locking mechanism includes locking Assembly and elasticity tensioning assembly, locking Assembly's one end is installed on the second exposed core, the other end is connected elasticity tensioning assembly's one end, elasticity tensioning assembly's the other end is also installed on the second exposed core, be provided with a joint structure on the coupling assembling, locking Assembly can the pulling force effect of elasticity tensioning assembly is gone into down the card and is gone into in the joint structure and the fixed removal coupling assembling, and then fixed second exposed core for the distance between first exposed core and the second exposed core is fixed and the dismouting of being convenient for.
According to the utility model discloses a some embodiments, the upper end of second exposed core is provided with a rotatable turning block, be provided with first silk hole on the turning block to be used for connecting first insulation pole, be provided with a top on the first insulation pole and hold the butt structure of locating piece is through rotating the butt structure can withstand the locating piece and promote first exposed core.
According to some embodiments of the utility model, the second exposed core sets up to the support of L type, including vertical structure and horizontal structure, first exposed core with vertical structure lies in same one side and keeps parallel, coupling assembling passes vertical structure connects first exposed core.
According to some embodiments of the utility model, first exposed core set up into with the clamp splice of vertical structure adaptation, the last one that is provided with of horizontal structure with the slide rail of the lower extreme adaptation of clamp splice.
According to some embodiments of the utility model, the taut subassembly of elasticity includes extension spring and fixed plate, the fixed plate is installed on the support to be provided with a lug of being convenient for connect the extension spring.
According to some embodiments of the utility model, the subassembly that resets adopts torsion round spring to make.
According to some embodiments of the utility model, the upper end of first exposed core is provided with second silk hole to be used for connecting the second insulator spindle.
According to the utility model discloses a some embodiments, all be provided with insulating pad on two parallel surfaces that second exposed core and first exposed core are relative, avoid the electric current of clamp department to pass through auxiliary clamping device and become the resistance that increases the node mutually, be favorable to the stability of node.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The invention will be further described with reference to the following figures and examples:
FIG. 1 is a schematic perspective view (I) of a vice-type disconnecting switch finger auxiliary clamping device;
FIG. 2 is a schematic perspective view of a vice-type disconnecting switch finger auxiliary clamping device;
FIG. 3-schematic view of the structure of the stent;
fig. 4-schematic structural view of the fixing plate;
FIG. 5 is a schematic view of the hook plate;
FIG. 6-schematic view of the structure of the clamping block;
reference numerals:
the device comprises a bracket 100, a positioning block 101, a torsion round spring 102, a fixing plate 103, a tension spring 104, a hook plate 105, a pull rod 106, a clamping block 107, an insulating pad 108 and a rotating block 109.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does 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.
In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
Referring to fig. 1-6, the utility model provides a vice formula isolator touches and indicates supplementary clamping device, mainly used supplementary clamp type isolator's contact touches and indicates, touches the clamp force that indicates department through the improvement contact and guarantees the stability of nodal connection.
Specifically, the utility model provides a vice formula isolator touches and indicates auxiliary clamping device includes the device main part, and the device main part is provided with:
the two clamping ends comprise a movable first clamping end and a fixed second clamping end;
the moving mechanism is used for moving the first clamping end to enable the first clamping end to be close to or far away from the second clamping end;
and the locking mechanism can lock the first clamping end in the moving process of the first clamping end.
In the structure, different from the traditional auxiliary clamping device, one of the two clamping ends can move, and the other clamping end is fixed, so that the structure of the whole auxiliary clamping device can be simplified, and if the two clamping ends both adopt a moving mode, the structural requirement on the switch is high, and more parts are needed; on the other hand, the operation is simpler, the moving of one clamping end is more labor-saving and easier than the moving of two clamping ends, and particularly in the case of charged operation, the fewer parts needing to be operated are more convenient to overhaul.
Furthermore, live-wire operation needs to utilize the insulator spindle when the technical staff overhauls, in two insulator spindles then, one can be as the dead lever, and another is as the carriage release lever for the technical staff can use right hand or left hand to remove the operation according to the custom of oneself, thereby reaches single-person operation's purpose, and further reaches the purpose that reduces the maintainer.
Considering the movement of the first clamping end, i.e. the first clamping end is opened when the auxiliary clamping device needs to be disassembled, and the first clamping end is tightened when the auxiliary clamping device needs to be installed, the combined design can be carried out for the first clamping end and the moving mechanism.
Specifically, for the movement of the first clamping end, the structure should be provided, according to some embodiments of the present invention, as shown in fig. 1 and fig. 2, the moving mechanism includes a connecting assembly and a reset assembly, one end of the connecting assembly is connected to the first clamping end, the other end is inserted into the second clamping end and is provided with a detachable positioning block 101 at the end, and the reset assembly is arranged between the positioning block 101 and the second clamping end; when the auxiliary clamping device is in an open state, under the action of propping the positioning block 101 by an external force, the first clamping end is far away from the second clamping end, and the resetting component is in a compressed state; when the auxiliary clamping device is in a tightening state, the first clamping end needs to move towards the second clamping end, and when the locking mechanism is opened and external force is removed, the first clamping end can be close to the second clamping end under the reset action of the reset assembly to realize a tightening and clamping function.
The above-mentioned opened state or the tightened state is realized by adjusting the locking mechanism or keeping the corresponding state by the locking mechanism.
Specifically, according to the utility model discloses a some embodiments, locking mechanism includes locking Assembly and elasticity tensioning Assembly, and locking Assembly's one end is installed on the second exposed core, the one end of elasticity tensioning Assembly is connected to the other end, and the other end of elasticity tensioning Assembly also is installed on the second exposed core, is provided with a joint structure on the coupling assembling, and locking Assembly can go into the joint structure and coupling assembling in the fixed movement under the tensile force effect of elasticity tensioning Assembly.
According to the above structure, the operation explanation is made in connection with the working state of the specific auxiliary clamping device:
technicians pull the locking assembly (generally pulled by an insulating rope) to enable the locking assembly to be disengaged from the clamping structure, so that the connecting assembly can move freely, and the auxiliary clamping device can be opened by compressing the resetting assembly under the action of external force on the positioning block 101; and the external force is removed, so that the auxiliary clamping device can be tightened by utilizing the reset function of the reset assembly.
The above-mentioned some embodiments disclose the structural composition and the working principle of the present application, and here, some preferred embodiments of some components in the above-mentioned structures are further provided by some embodiments.
As shown in fig. 1 and 2, in consideration of the installation of the insulation rod, according to some embodiments of the present invention, a rotatable rotary block 109 is provided at an upper end of the second clamping end, and a first screw hole is provided on the rotary block 109 for connecting the first insulation rod; furthermore, in consideration of the movement of the positioning block 101, a butting structure for butting against the positioning block 101 is arranged on the first insulating rod, and the butting structure can be butted against the positioning block 101 by rotating to push the first clamping end, so as to compress the reset assembly.
In view of the fixation of the first clamping shoe, there are at least two structural arrangements for the second clamping shoe and the connecting assembly:
one of the structural arrangements, as shown in fig. 3, according to some embodiments of the present invention, the second clamping end is configured as an L-shaped bracket 100, which includes a vertical structure and a horizontal structure, the first clamping end and the vertical structure are located on the same side and kept parallel, and the connecting assembly passes through the vertical structure to connect the first clamping end.
Further, as shown in fig. 1, the connecting assembly is provided as a pull rod 106, the pull rod 106 is a cylindrical rod, and the pull rod 106 is provided with a clamping groove at a certain length for forming a clamping structure; one end of the pull rod 106 penetrates through the vertical structure of the L-shaped bracket 100 and is in threaded connection with the positioning block 101, and the other end of the pull rod is in threaded connection with the first clamping end; the reset component is arranged on the pull rod 106 in a penetrating way and is positioned between the vertical structure of the L-shaped bracket 100 and the positioning block 101.
In order to ensure the stability of the pull rod 106 during movement and avoid up-and-down jumping or unnecessary rotation, an additional design is provided for the L-shaped bracket 100.
Namely, a through hole for the installation pull rod 106 to pass through is arranged on the vertical structure of the L-shaped bracket 100, and the size of the through hole and the size of the pull rod 106 are matched into a circular through hole; and a slide rail has been seted up on the horizontal structure of L type support 100, as shown in fig. 1, the slide rail is narrow from top to bottom wide, and one end opening for first exposed core can follow the opening part and slide in or the roll-off, can guarantee through the structure of narrow from top to bottom wide that first exposed core can not take place to rotate at the in-process that removes, and be favorable to stabilizing centre gripping or dismouting, also difficult the condition that takes place first exposed core and drop.
The other structure is different from the structure mainly in the difference of the support 100, the support 100 only has a vertical structure and does not have a horizontal structure, the through hole is a prismatic through hole, namely the cross section of the through hole is polygonal, so that the part of the pull rod 106 penetrating through the support 100 needs to be correspondingly designed into a prismatic structure, and thus, the rotation of the pull rod 106 is avoided through a prismatic clamping structure, the same technical effect can be achieved, the structure of the support 100 can be further simplified, the structure of the whole auxiliary clamping device is further simplified, and the disassembly and assembly operation of technicians is facilitated to a certain extent.
Further, to the specific structure of the above embodiment, the design of the first clamping end herein may not be too fixed, and it is only necessary to cooperate to realize clamping, and for the above L-shaped bracket 100, as shown in fig. 6, according to the further embodiment of the present invention, the first clamping end is provided as the clamping block 107 adapted to the vertical structure.
It is obvious that the above-described structure of the clamping block 107 can also be applied to another structure of the bracket 100 without affecting the function thereof.
Further, some preferred embodiments of other components of the locking mechanism are provided herein.
As shown in fig. 1, 2 and 4, according to some embodiments of the present invention, the elastic tensioning assembly includes a tension spring 104 and a fixing plate 103, and the fixing plate 103 is installed on the bracket 100 and is provided with a protrusion for conveniently connecting the tension spring 104.
As shown in fig. 5, the locking assembly is provided with a hook plate 105, the hook plate 105 is a bent plate, one bent part is used for being mounted on the bracket 100, and the other bent part is connected with the tension spring 104 and provided with a notch adapted to the clamping structure, so that the other bent part 105 can be clamped into the clamping structure under the action of the tension force of the tension spring 104 to realize locking; meanwhile, a drawing hole is further formed in the other part of the hook plate 105, so that a technician can conveniently pass the insulating rope through the drawing hole when installing the auxiliary clamping device, and then pull the hook plate 105 open by using the insulating rope, so as to open the locking mechanism.
Further, considering that the restoring action of the restoring assembly needs to maintain high efficiency, as shown in fig. 2, according to some embodiments of the present invention, the restoring assembly is made of a torsion circular spring 102.
In order to facilitate the application of force to the first clamping end, as shown in fig. 6, according to some embodiments of the present invention, the upper end of the first clamping end is provided with a second screw hole for connecting a second insulating rod.
In particular, in order to facilitate the installation of the insulation rod, the first screw hole and the second screw hole can be provided with a threaded connection structure to connect the insulation rod, so that the technical staff can conveniently disassemble and assemble the insulation rod.
Because supplementary clamping device is the contact finger that is used for supplementary clamp jaw formula isolator contact, guarantees the stability of nodal connection through the clamp force that improves the contact finger department, consequently need avoid the electric current as far as possible to pass through from supplementary clamping device, as shown in fig. 1, according to the utility model discloses a some embodiments, all are provided with insulating pad 108 on two parallel surfaces that second exposed core and first exposed core are relative.
Further, the disassembly and assembly operation of the vice-type disconnecting switch contact finger auxiliary clamping device proposed by the present application is briefly described herein according to the above-mentioned specific structure.
Regarding the mounting of the auxiliary clamping device:
a technician inserts two insulating rods into corresponding positions of the first clamping end and the second clamping end respectively, namely, the insulating rods are inserted into corresponding positions of the clamping block 107 and the bracket 100 respectively as shown in fig. 1, the pull rod 106 is pushed by one insulating rod (the first insulating rod) to move the clamping block 107, the clamping groove on the pull rod 106 is far away from the hook plate 105, the resetting component is in a compression state, and the whole auxiliary clamping device is in an opening state; after moving to the installation position, the technician gradually loosens the pushing of the pull rod 106, so that the pull rod 106 is reset under the action of the reset assembly until the hook plate 105 is clamped into the clamping groove under the action of the tension spring 104, and the installation work is completed.
With regard to the disassembly of the auxiliary gripping device:
contrary to the installation, the insulation rope penetrates the hook plate 105, then the hook plate 105 is pulled open, and then the pull rod 106 is pushed to push away the clamping block 107, so as to open the auxiliary clamping device, thereby realizing the disassembly of the auxiliary clamping device.
Synthesize the aforesaid, whole auxiliary clamping device's dismouting is very simple, and the operation can be accomplished to the single technician, and whole auxiliary clamping device's simple structure and connect closely, can avoid collapsing of spare part to fly.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. The utility model provides a vice formula isolator touches and indicates auxiliary clamping device which characterized in that, includes the device main part, the device main part is provided with:
the two clamping ends comprise a movable first clamping end and a fixed second clamping end;
the moving mechanism is used for moving the first clamping end to enable the first clamping end to be close to or far away from the second clamping end;
the locking mechanism can lock the first clamping end in the moving process of the first clamping end.
2. The vice-type auxiliary clamping device for the contact finger of the disconnecting switch of claim 1, wherein the moving mechanism comprises a connecting assembly and a reset assembly, one end of the connecting assembly is connected with the first clamping end, the other end of the connecting assembly is arranged on the second clamping end in a penetrating way, a detachable positioning block (101) is arranged at the end part of the connecting assembly, and the reset assembly is arranged between the positioning block (101) and the second clamping end.
3. The vice-type isolating switch contact finger auxiliary clamping device as claimed in claim 2, wherein the locking mechanism comprises a locking component and an elastic tensioning component, one end of the locking component is mounted on the second clamping end, the other end of the locking component is connected with one end of the elastic tensioning component, the other end of the elastic tensioning component is also mounted on the second clamping end, a clamping structure is arranged on the connecting component, and the locking component can be clamped into the clamping structure under the tensile force of the elastic tensioning component to fix the connecting component in movement.
4. The vice-type auxiliary clamping device for the contact finger of the disconnecting switch of claim 3, wherein the second clamping end is provided at an upper end thereof with a rotatable rotating block (109), the rotating block (109) is provided with a first threaded hole for connecting a first insulating rod, the first insulating rod is provided with an abutting structure for abutting against the positioning block (101), and the first clamping end can be pushed against the positioning block (101) by rotating the abutting structure.
5. Vice-type disconnector finger auxiliary clamping device according to claim 4, characterized in that the second clamping end is provided as an L-shaped bracket (100) comprising a vertical structure and a horizontal structure, the first clamping end is located on the same side as the vertical structure and is parallel to the vertical structure, and the connecting assembly passes through the vertical structure to connect the first clamping end.
6. Vice-type disconnector finger auxiliary clamping device according to claim 5, characterized in that the first clamping end is provided as a clamping block (107) adapted to the vertical structure, and the horizontal structure is provided with a slide rail adapted to the lower end of the clamping block (107).
7. Vice-type disconnector finger auxiliary clamping device according to claim 6, characterized in that the elastic tensioning assembly comprises a tension spring (104) and a fixing plate (103), the fixing plate (103) being mounted on the support (100) and being provided with a projection for facilitating the connection of the tension spring (104).
8. Vice-type disconnector finger auxiliary clamping device according to claim 7, characterized in that the return assembly is made of a torsion round spring (102).
9. The vice-type disconnecting switch finger auxiliary clamping device as claimed in any one of claims 1 to 8, wherein the upper end of the first clamping end is provided with a second screw hole for connecting a second insulating rod.
10. Vice-type disconnector finger auxiliary clamping device according to claim 9, characterized in that the second clamping end and the first clamping end are provided with insulating pads (108) on two opposite parallel surfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922421039.1U CN211992537U (en) | 2019-12-27 | 2019-12-27 | Vice type isolating switch contact finger auxiliary clamping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922421039.1U CN211992537U (en) | 2019-12-27 | 2019-12-27 | Vice type isolating switch contact finger auxiliary clamping device |
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| Publication Number | Publication Date |
|---|---|
| CN211992537U true CN211992537U (en) | 2020-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922421039.1U Withdrawn - After Issue CN211992537U (en) | 2019-12-27 | 2019-12-27 | Vice type isolating switch contact finger auxiliary clamping device |
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| CN (1) | CN211992537U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110977805A (en) * | 2019-12-27 | 2020-04-10 | 湖南长高高压开关集团股份公司 | Vice type isolating switch contact finger auxiliary clamping device |
-
2019
- 2019-12-27 CN CN201922421039.1U patent/CN211992537U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110977805A (en) * | 2019-12-27 | 2020-04-10 | 湖南长高高压开关集团股份公司 | Vice type isolating switch contact finger auxiliary clamping device |
| CN110977805B (en) * | 2019-12-27 | 2024-04-12 | 长高电新科技股份公司 | Vice type isolating switch contact finger auxiliary clamping device |
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| GR01 | Patent grant | ||
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Address after: 410000 No. 393, section 3, Jinxing North Road, Wangcheng economic and Technological Development Zone, Changsha City, Hunan Province Patentee after: Chang Hi-Tech New Technology Co.,Ltd. Patentee after: HUNAN CHANGGAO HIGH VOLTAGE SWITCHGEAR Co.,Ltd. Address before: 411400, No. 393, section 3, North Jinxing Road, Wangcheng economic and Technological Development Zone, Changsha City, Hunan Province Patentee before: HUNAN CHANGGAO HIGH VOLTAGE SWITCHGEAR GROUP Co.,Ltd. Patentee before: HUNAN CHANGGAO HIGH VOLTAGE SWITCHGEAR Co.,Ltd. |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20201124 Effective date of abandoning: 20240412 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20201124 Effective date of abandoning: 20240412 |