CN114758912A - Electric replacement device for tulip contact - Google Patents
Electric replacement device for tulip contact Download PDFInfo
- Publication number
- CN114758912A CN114758912A CN202210505391.7A CN202210505391A CN114758912A CN 114758912 A CN114758912 A CN 114758912A CN 202210505391 A CN202210505391 A CN 202210505391A CN 114758912 A CN114758912 A CN 114758912A
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- sleeve
- motor
- screw rod
- turns
- controller
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- 241000722921 Tulipa gesneriana Species 0.000 title claims description 30
- 230000007246 mechanism Effects 0.000 claims abstract description 42
- 230000005540 biological transmission Effects 0.000 claims abstract description 15
- 230000006698 induction Effects 0.000 claims abstract description 12
- 230000008602 contraction Effects 0.000 claims abstract description 10
- 230000003993 interaction Effects 0.000 claims description 7
- 230000008859 change Effects 0.000 claims description 4
- 230000001939 inductive effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
- H01H11/04—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B3/00—Apparatus specially adapted for the manufacture, assembly, or maintenance of boards or switchgear
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The application discloses plum blossom contact electric replacement device includes: the device comprises a device main body, a transmission mechanism, an expansion and contraction mechanism and an induction control mechanism; the transmission mechanism comprises: a motor and a screw; the mechanism that contracts expands includes: the sleeve, the outer push rods, the inner push rods and the end heads are arranged in the sleeve; the first end of the screw rod is in transmission connection with the motor, and the second end of the screw rod extends out of the sleeve; the end socket is sleeved at the second end of the screw and is in threaded fit with the screw; the outer push rod is rotatably connected to the second end of the sleeve along the axial direction of the sleeve; the first end of the inner push rod is rotatably connected with the outer push rod, and the second end of the inner push rod is rotatably connected with the end socket; the induction control mechanism includes: a controller; the controller is used for detecting the number of turns of the screw rod, and when the number of turns of the screw rod reaches the preset number of turns, the motor is controlled to rotate reversely to reset. The motor drives the screw rod to rotate, so that the end head can be driven to move along the axial direction of the sleeve to drive the outer push rods to do expansion and contraction movement, and the spring of the plum blossom contact is pushed to expand to take down the plum blossom contact.
Description
Technical Field
The application relates to the technical field of plum blossom contact assembly and disassembly tools, in particular to an electric replacement device for a plum blossom contact.
Background
At present, most 10kV equipment of a transformer substation mainly adopts a KYN type switch cabinet and uses a hand-operated trolley switch. The mechanical part of the switch structure mainly comprises an operating mechanism, a vacuum bulb, a trolley chassis, a conductive arm and a moving contact. The plum blossom contact is a spring contact consisting of a spring, a conducting strip and a framework, and has the defects that the moving contact generates large heat when operating under the working condition of high load and large current for a long time, the spring in the moving contact is easy to age, the contact is easy to deform under stress, and the like. When the moving contact has defects, the moving contact needs to be replaced in time. The existing replacing method usually uses tools such as a binding belt, a screwdriver, a pair of pliers and the like, and the fixed spring is detached one by one in a manual mode of a maintainer, and then the whole contact is taken down. The mode is time-consuming and labor-consuming in operation, and the spring is easy to deform and hurt people due to clamping when being detached by a screwdriver, so that the spring is easy to fly out to hurt people.
Disclosure of Invention
In view of this, the utility model aims at providing an electronic change device of plum blossom contact for solve the problem that current moving contact dismantlement mode operation is inconvenient and have safe risk.
In order to achieve the technical purpose, the application provides an electric replacement device for a tulip contact, which comprises: the device comprises a device main body, a transmission mechanism, an expansion and contraction mechanism and an induction control mechanism;
The transmission mechanism includes: a motor and a screw;
the expanding and contracting mechanism comprises: the sleeve, the outer push rods, the inner push rods and the end heads are arranged in the sleeve;
the motor is arranged in the device main body;
the first end of the sleeve is fixedly connected with the device main body;
the screw rod is rotatably arranged in the sleeve, a first end of the screw rod is in transmission connection with the motor, and a second end of the screw rod extends out of a second end of the sleeve;
the end cap is sleeved at the second end of the screw rod and is in threaded fit with the screw rod;
the outer push rods are rotatably connected to the second end of the sleeve along the axial direction of the sleeve and are uniformly distributed in the circumferential direction;
the first end of the inner push rod is rotatably connected with the outer push rod along the axial direction of the sleeve, and the second end of the inner push rod is rotatably connected with the end head along the axial direction of the sleeve;
the inner push rods correspond to the outer push rods one by one;
the induction control mechanism includes: a controller;
the controller is arranged in the device main body and is electrically connected with the motor;
the controller is used for detecting the number of rotation turns of the screw rod and controlling the motor to rotate reversely to reset when the number of rotation turns of the screw rod reaches a preset number of turns.
Further, the controller is further configured to record a rotation duration for driving the screw to rotate to the preset number of turns in a normal state of the motor, and output an invalid stop signal and control the motor to stop when it is detected that the number of turns of the screw after the screw rotates for the preset duration is not equal to the preset number of turns.
Further, the controller is further configured to control the motor to restart and detect whether the number of rotation turns of the restarted motor within the preset time period is a preset number of turns after outputting an invalid stop signal after the preset time period, and if not, output an effective stop signal and control the motor to stop.
Further, the controller detects the number of turns of the screw through a hall sensor and an a/D converter.
Further, the expanding and contracting mechanism further comprises: a middle shaft limiting sleeve;
the middle shaft limiting sleeve is arranged at the second end of the screw rod, is positioned between the end head and the sleeve and is used for limiting the axial moving distance of the end head along the sleeve.
Further, the expanding and contracting mechanism further comprises: an over-distance limiting ring;
the over-distance limiting ring is sleeved on the sleeve and is positioned at the second end of the sleeve.
Further, the sleeve and the device body form a gun shape;
the motor is connected with a start-stop switch;
the start-stop switch is arranged on the device main body.
Further, the induction control mechanism further comprises: a human-computer interaction display;
the human-computer interaction display is in communication connection with the controller.
According to the above technical scheme, the application provides an electronic change device of plum blossom contact, includes: the device comprises a device main body, a transmission mechanism, an expansion and contraction mechanism and an induction control mechanism; the transmission mechanism includes: a motor and a screw; the expanding and contracting mechanism comprises: the sleeve, the plurality of outer push rods, the plurality of inner push rods and the end heads; the motor is arranged in the device main body; the first end of the sleeve is fixedly connected with the device main body; the screw rod is rotatably arranged in the sleeve, a first end of the screw rod is in transmission connection with the motor, and a second end of the screw rod extends out of a second end of the sleeve; the end cap is sleeved at the second end of the screw rod and is in threaded fit with the screw rod; the outer push rods are rotatably connected to the second end of the sleeve along the axial direction of the sleeve and are uniformly distributed in the circumferential direction; the first end of the inner push rod is rotatably connected with the outer push rod along the axial direction of the sleeve, and the second end of the inner push rod is rotatably connected with the end head along the axial direction of the sleeve; the inner push rods correspond to the outer push rods one by one; the induction control mechanism includes: a controller; the controller is arranged in the device main body and is electrically connected with the motor; the controller is used for detecting the number of rotation turns of the screw rod, and when the number of rotation turns of the screw rod reaches the preset number of turns, the motor is controlled to rotate reversely to reset. Drive the screw rod through the motor and rotate, thereby can drive the end and drive many outer push rods along telescopic axial displacement and do the motion of expanding and contracting to the spring expansion that promotes the plum blossom contact takes off the plum blossom contact, compares in the mode of current change plum blossom contact and can effectively raise the efficiency, reduces safe risk.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the description below are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive labor.
Fig. 1 is an exploded view of an overall structure of an electric replacement device for a tulip contact according to an embodiment of the present disclosure;
fig. 2 is an assembly diagram of an overall structure of an electric replacement device for a tulip contact according to an embodiment of the present disclosure;
fig. 3 is a connection diagram of an induction control mechanism of an electric replacement device for a tulip contact according to an embodiment of the present application.
Detailed Description
The technical solutions of the embodiments of the present application will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are some, but not all embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the scope of protection claimed herein.
In the description of the embodiments of the present application, 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 orientations or positional relationships shown in the drawings, and are only for convenience of description of the embodiments of the present application and for simplicity of description, but do not indicate or imply that the devices or elements referred to must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the embodiments of the present application. 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 embodiments of the present application, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected" and "connected" should be interpreted broadly, and may be, for example, a fixed connection, an exchangeable connection, an integrated connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, and a communication between two elements. Specific meanings of the above terms in the embodiments of the present application can be understood as specific cases by those of ordinary skill in the art.
Referring to fig. 1 to fig. 3, an embodiment of the present invention provides an electric replacement device for a tulip contact, including: the device comprises a device main body 10, a transmission mechanism 20, an expansion and contraction mechanism 30 and an induction control mechanism 40; the transmission mechanism 20 includes: a motor 21 and a screw 22; the expanding and contracting mechanism 30 includes: a sleeve 31, a plurality of outer push rods 32, a plurality of inner push rods 33 and an end head 34; the motor 21 is provided in the apparatus main body 10; the first end of the sleeve 31 is fixedly connected with the device body 10; the screw 22 is rotatably arranged in the sleeve 31, and a first end of the screw is in transmission connection with the motor 21, and a second end of the screw extends out of a second end of the sleeve 31; the end head 34 is sleeved at the second end of the screw 22 and is in threaded fit with the screw 22; the plurality of outer push rods 32 are rotatably connected to the second end of the sleeve 31 along the axial direction of the sleeve 31, and the plurality of outer push rods 32 are uniformly distributed on the circumference; the first end of the inner push rod 33 is rotatably connected with the outer push rod 32 along the axial direction of the sleeve 31, and the second end is rotatably connected with the end head 34 along the axial direction of the sleeve 31; the plurality of inner push rods 33 correspond to the plurality of outer push rods 32 one by one; the induction control mechanism 40 includes: a controller 41; the controller 41 is provided in the apparatus main body and electrically connected to the motor 21; the controller 41 is used for detecting the rotation number of the screw 22 and controlling the motor 21 to reversely rotate to reset when the rotation number of the screw 22 reaches the preset number.
Specifically, after the motor 21 is started, the screw 22 is driven to rotate; since the end 34 is connected to a plurality of inner push rods 33, the inner push rods 33 are connected to the outer push rods 32, the outer push rods 32 are connected to the sleeve 31, and the sleeve 31 is fixedly connected to the device body 10, the end 34 cannot rotate along the screw 22, so that the end 34 can move along the threads of the screw 22 to move back and forth in the axial direction of the sleeve 31. Because the two ends of the outer push rod 32 are respectively rotatably connected with the sleeve 31 and the inner push rod 33, and the end head 34 of the inner push rod 33 is rotatably connected, when the end head 34 moves back and forth, the inner push rods 33 drive the outer push rods 32 to expand and contract. The sleeve 31 is used as the rear part of the end head 34, and when the end head 34 moves backwards, the plurality of outer push rods 32 can be driven to contract; the plurality of outer push rods 32 can be caused to expand as the tip 34 moves forward.
When the tulip contact needs to be detached, the motor 21 drives the end socket 34 to move backwards, then the plurality of contracted outer push rods 32 are inserted into the tulip contact, the motor 21 drives the end socket 34 to move forwards, the outer push rods 32 expanding outwards can stretch the spring of the tulip contact, and when the diameter of the tulip contact is larger than the fixed size of the fixed contact, the motor stops rotating, and the tulip contact can be detached.
Simultaneously, in this scheme, through controller 41, can detect the number of turns of screw rod 22 to control motor 21 to stop and the reversal resets when screw rod 22 rotates to predetermineeing the number of turns, avoid strutting the in-process of plum blossom contact, the pole 32 that pushes outward excessively expands and causes the damage of plum blossom contact.
Wherein, the controller 21 can detect the rotation number of the screw 22 by a hall sensor and an a/D converter. The Hall sensor is used for sensing the rotation turns of the motor 21 or the screw 22 and then outputting an analog signal, the A/D converter converts the analog signal into a digital signal and then outputs the digital signal to the digital interface 45 of the controller 21, and the detection of the rotation turns of the motor 21 or the screw 22 by the controller 21 is realized.
As a further improvement, in this embodiment, the controller 4 is further configured to record a rotation time period of the driving screw 22 rotating to a preset number of turns in a normal state of the motor 21, and when it is detected that the number of turns of the driving screw 22 after the preset time period is not equal to the preset number of turns, output an invalid stop signal and control the motor 21 to stop.
Specifically, when the motor 21 is locked or overloaded, the rotation speed of the motor 21 is lower than that in the normal state, so that the number of rotations of the screw 22 is not equal to the preset number of rotations after a preset time period, which may cause damage to the motor 21; the other condition is that the rotating speed of the motor 21 is too high, which is not beneficial to the control of the controller 4 on the motor 21 and is easy to cause the damage of the tulip contact spring. In this embodiment, through the controller 4, when the number of turns of the screw 22 does not match the preset number of turns within the preset time, the motor 21 is controlled to stop, and an invalid stop signal is output to notify the operator. The preset number of turns can be a fixed value or a range value without limitation.
Further, the controller 4 is further configured to, after outputting the invalid stop signal for a set stop time period, control the motor 21 to restart and detect whether the number of rotation turns of the restarted motor 21 within the preset time period is a preset number of turns, and if not, output the valid stop signal and control the motor 21 to stop.
Specifically, after the motor 21 is stopped each time, the controller 4 resets the stop signal of the motor 21 to an inactive level state, and sets a preset number of turns of the screw 22 to be rotated according to the size of the tulip contact of the action object by taking the current expansion state of the outer push rod 32 as an initial state. After the motor 21 is repaired by the set shutdown duration, whether the number of rotation turns of the restarted motor 21 in the preset duration is the preset number of turns is detected again, if not, it indicates that the motor 21 is likely to have a fault, and an effective shutdown signal is output to inform a worker.
The device main body 1 can be provided with devices such as an infrared scanner and the like for sensing the diameter of the tulip contact and storing the diameter, the expansion size of the outer push rod 32 and the diameter of the tulip contact are matched in the expansion overshoot of the outer push rod 32, and when the collected expansion size of the outer push rod 32 is equal to the set motor rotation number, the motor 21 is controlled to stop, so that the end head stops moving, the tulip contact can be just taken down from the fixed contact at the moment, and the elasticity of the spring is ensured not to be damaged.
Further, the inductive control mechanism 40 further includes: a human-computer interaction display 42; the human-computer interaction display 42 is communicatively connected to the controller 41. The human-computer interaction display 43 may be disposed on the device main body 10, or may be disposed on other terminals, and may be configured to set a preset number of turns of the screw 22 to be rotated according to the outer radial controller 41 of the static contact, so as to match the static contacts of different specifications.
Moreover, the sensing control mechanism 40 may further include a battery 44 and a pressure sensor 43, the battery 44 is used for providing workpieces such as the motor 21 and the controller 41, and the pressure sensor 43 is disposed on the outer push rod 32, and is electrically connected to the controller 41, and is used for sensing the pressure of the tulip contact in the expanding process.
Further, the expansion and contraction mechanism 30 further includes: a middle shaft limiting sleeve 35; the middle shaft limiting sleeve 35 is mounted at the second end of the screw 22 and located between the end head 34 and the sleeve 31, and is used for limiting the moving distance of the end head 34 along the axial direction of the sleeve 31.
Specifically, the middle shaft limiting sleeve 35 is disposed between the end head 34 and the sleeve 31, and can be fixedly connected to the screw 22 through the long pin 24, when the end head 34 moves along the rear end to touch the middle shaft limiting sleeve 35, the end head 34 cannot move, and the outer push rod 32 is prevented from further expanding to cause spring damage.
The middle shaft limiting sleeve 35 may be provided with a plurality of pin holes, and the plurality of pin holes are sequentially arranged at intervals along the axial direction, so that the long pins 24 may be selected to be installed in different pin holes according to the outer diameters of different static contacts, and thus when the end 34 moves to contact the middle shaft limiting sleeve 35, the expanded outer diameter of the outer push rod 32 is just equal to the outer diameter of the static contact, and the middle shaft limiting sleeve 35 plays a role in physical limiting.
Further, the expansion and contraction mechanism 30 further includes: an over-distance limit ring 36; the over-distance limiting ring 36 is sleeved on the sleeve 31 and is located at the second end of the sleeve 31.
Specifically, in the process of mounting the tulip contact and the fixed contact, a certain distance, namely, an over distance, needs to be ensured between the tulip contact and the fixed contact. The distance between the tulip contact and the fixed contact in the installation process can be limited by the over-distance limiting ring 36. By adjusting the installation position of the over-distance limiting ring 36, when the fixed contact touches the over-distance limiting ring 36, the distance between the plum blossom contact and the fixed contact is just over-distance, so that the installation of the plum blossom contact and the fixed contact does not need to be repeatedly debugged.
Further, the sleeve 31 and the device body 10 form a gun shape; the motor 21 is connected with a start-stop switch 23; the start/stop switch 23 is provided on the apparatus main body 10. The electric replacement device for the gun-shaped tulip contact is convenient for manual use by maintainers, and improves the convenience of use.
It should be noted that, the second end of the outer push rod 32 may be provided with a protrusion to both sides so that the outer push rod 32 is T-shaped, and thus the plurality of outer push rods 32 may form a ring shape, and may better output the expansion force to the tulip contact.
Although the present invention has been described in detail with reference to examples, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention.
Claims (8)
1. The utility model provides an electronic change device of plum blossom contact which characterized in that includes: the device comprises a device main body, a transmission mechanism, an expansion and contraction mechanism and an induction control mechanism;
the transmission mechanism includes: a motor and a screw;
the expanding and contracting mechanism comprises: the sleeve, the plurality of outer push rods, the plurality of inner push rods and the end heads;
the motor is arranged in the device main body;
the first end of the sleeve is fixedly connected with the device main body;
the screw rod is rotatably arranged in the sleeve, a first end of the screw rod is in transmission connection with the motor, and a second end of the screw rod extends out of a second end of the sleeve;
The end cap is sleeved at the second end of the screw rod and is in threaded fit with the screw rod;
the outer push rods are rotatably connected to the second end of the sleeve along the axial direction of the sleeve and are uniformly distributed on the circumference;
the first end of the inner push rod is rotatably connected with the outer push rod along the axial direction of the sleeve, and the second end of the inner push rod is rotatably connected with the end head along the axial direction of the sleeve;
the inner push rods correspond to the outer push rods one by one;
the induction control mechanism includes: a controller;
the controller is arranged in the device main body and is electrically connected with the motor;
the controller is used for detecting the number of rotation turns of the screw rod and controlling the motor to rotate reversely to reset when the number of rotation turns of the screw rod reaches a preset number of turns.
2. The electrical replacement device for the tulip contact as claimed in claim 1, wherein the controller is further configured to record the rotation duration of the preset number of turns of the screw rod driven by the motor in a normal state, and output an invalid stop signal and control the motor to stop when it is detected that the number of turns of the screw rod after the preset duration is not equal to the preset number of turns.
3. The electrical replacement device for the tulip contact as claimed in claim 2, wherein the controller is further configured to control the motor to restart and detect whether the number of rotations of the restarted motor within the preset time period is a preset number of rotations or not after outputting an invalid stop signal after the preset stop time period, and if not, output an effective stop signal and control the motor to stop.
4. The electrical tulip contact replacing device of claim 1, wherein the controller detects the number of turns of the screw via a hall sensor and an a/D converter.
5. The electrical tulip contact replacing device of claim 1, wherein the expansion and contraction mechanism further comprises: a middle shaft limiting sleeve;
the middle shaft limiting sleeve is arranged at the second end of the screw rod, is positioned between the end head and the sleeve and is used for limiting the axial moving distance of the end head along the sleeve.
6. The electrical tulip contact replacing device of claim 1, wherein the expansion and contraction mechanism further comprises: an over-distance limiting ring;
the over-distance limiting ring is sleeved on the sleeve and is positioned at the second end of the sleeve.
7. The electrical tulip contact replacement device of claim 1, wherein the sleeve and the device body form a gun shape;
the motor is connected with a start-stop switch;
the start-stop switch is arranged on the device main body.
8. The electrical tulip contact replacement device as claimed in claim 1, wherein the inductive control mechanism further comprises: a human-computer interaction display;
the human-computer interaction display is in communication connection with the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210505391.7A CN114758912A (en) | 2022-05-10 | 2022-05-10 | Electric replacement device for tulip contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210505391.7A CN114758912A (en) | 2022-05-10 | 2022-05-10 | Electric replacement device for tulip contact |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114758912A true CN114758912A (en) | 2022-07-15 |
Family
ID=82334234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210505391.7A Pending CN114758912A (en) | 2022-05-10 | 2022-05-10 | Electric replacement device for tulip contact |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114758912A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208608092U (en) * | 2018-09-11 | 2019-03-15 | 国网陕西省电力公司榆林供电公司 | A kind of 10-35 kilovolts of moving contact of breaker attaching/detaching apparatus |
| CN111816481A (en) * | 2020-08-04 | 2020-10-23 | 国网福建省电力有限公司莆田供电公司 | Special assembly and disassembly tools of plum blossom contact |
| WO2021093381A1 (en) * | 2019-11-14 | 2021-05-20 | 国网上海市电力公司 | Simulation device for poor contact of gis internal contact and infrared calibration method |
| CN215219467U (en) * | 2021-05-26 | 2021-12-17 | 苏州宏基工具有限公司 | Electric batch operation turn number control device |
-
2022
- 2022-05-10 CN CN202210505391.7A patent/CN114758912A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208608092U (en) * | 2018-09-11 | 2019-03-15 | 国网陕西省电力公司榆林供电公司 | A kind of 10-35 kilovolts of moving contact of breaker attaching/detaching apparatus |
| WO2021093381A1 (en) * | 2019-11-14 | 2021-05-20 | 国网上海市电力公司 | Simulation device for poor contact of gis internal contact and infrared calibration method |
| CN111816481A (en) * | 2020-08-04 | 2020-10-23 | 国网福建省电力有限公司莆田供电公司 | Special assembly and disassembly tools of plum blossom contact |
| CN215219467U (en) * | 2021-05-26 | 2021-12-17 | 苏州宏基工具有限公司 | Electric batch operation turn number control device |
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