CN109904768B - Chassis overhauling device for vacuum circuit breaker of 10 kilovolt centrally installed switchgear - Google Patents
Chassis overhauling device for vacuum circuit breaker of 10 kilovolt centrally installed switchgear Download PDFInfo
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- CN109904768B CN109904768B CN201910120265.8A CN201910120265A CN109904768B CN 109904768 B CN109904768 B CN 109904768B CN 201910120265 A CN201910120265 A CN 201910120265A CN 109904768 B CN109904768 B CN 109904768B
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- 230000007306 turnover Effects 0.000 claims abstract description 19
- 238000012423 maintenance Methods 0.000 description 14
- 230000006378 damage Effects 0.000 description 10
- 230000007547 defect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 208000027418 Wounds and injury Diseases 0.000 description 3
- 208000014674 injury Diseases 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
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Abstract
The invention discloses a chassis overhauling device for a vacuum circuit breaker of a 10 kilovolt centrally installed switchgear, which comprises a frame, a lifting bracket capable of vertically lifting along the frame, a linear driver for driving the lifting bracket to lift, two clamping arms arranged on the left side and the right side of the lifting bracket and extending forwards, and a turnover bracket hinged on the inner side of the front end of the clamping arm, wherein the two clamping arms are connected with an opening and closing control structure for controlling opening and closing, wheels are arranged at four corners of the bottom of the frame, a linear guide rail is arranged between the lifting bracket and the frame, the turnover bracket is fixed with the vacuum circuit breaker, and an angle positioning structure for fixing the angle of the turnover bracket is connected with the turnover bracket. The invention can realize lifting and overturning functions, is convenient to overhaul, and has the advantages of low cost, good safety performance and strong operability.
Description
Technical Field
The invention relates to electric power overhaul equipment, in particular to circuit breaker chassis overhaul equipment.
Background
The circuit breaker chassis is an important part of the circuit breaker. The chassis is in insulating fit with the centrally-mounted cabinet body, and is mechanically interlocked, so that the cabinet is safe, reliable and flexible. The chassis is provided with an isolation maintenance position and a working position in the cabinet, and each position is provided with a positioning device to ensure reliable interlocking and must be operated according to an interlocking misoperation prevention program. The chassis is rocked by the nut and the screw rod to push and withdraw, and the operation is light. Once the chassis fails, the normal operation of the switching equipment is affected, and when serious, a certain line is powered off.
To enhance the power supply reliability, it is required that certain lines should not be powered down for more than 1 hour. This requires the service personnel to complete the fault treatment within 1 hour, and should be as fast as possible.
Because the weight of the breaker body is large, the chassis maintenance must be separated from the breaker body for the purpose of maintenance safety, the bolts on the base are removed by using the adjustable wrench, but the lifting device for reliably carrying out the breaker body is lacking on site, so the breaker body has to be carried down from the handcart and turned over again for maintenance, and because the weight of the breaker body is usually more than 150kg, at least 4 persons are required to lift and transport, the chassis maintenance is inconvenient to carry, the chassis maintenance is unsafe in the carrying process, and the maintenance process is time-consuming and inefficient.
Through investigation, breaker chassis defect problems are generally categorized into four categories:
(1) The micro-switch node is damaged. The problems are mainly manifested in the reasons that the micro switch nodes of S8 and S9 in the chassis are damaged or the loose contact of the wiring is poor, and the like, and maintenance personnel need to rush to the field for treatment.
(2) The interlocking bending plates break. If a 10kV bus is electrified, misoperation at the middle position can lead to discharge of upper and lower contacts, personal injury is caused, and maintenance personnel also need to rush to the field for treatment.
(3) The interlock lever is bent. If the interlocking rod is bent after multiple locking actions and cannot be deformed, the breaker can be switched in or out after being switched on, and the requirements of electric power safety working regulations are seriously violated: the load-carrying on-off isolating switch cannot be realized. The result of the incorrect operation can be that the equipment discharges to cause injury to personnel, so that the equipment needs to be immediately processed by maintenance personnel.
(4) The worm wheel and worm are damaged. The abrasion or damage of the worm wheel and the worm can lead the chassis to swing in and out abnormally, seriously affect other normal locking functions, and also needs to be immediately processed by maintenance personnel.
Moreover, for the four common faults of the chassis, the most probable occurrence is the damage of the micro-contact. When the defect of the micro-switch node damage is treated, a maintainer lifts, turns over, dismantles and overhauls the micro-switch node on site by adopting a plurality of persons, and when the defect of the micro-switch node damage is overhauled, the breaker body must be turned over by 90 degrees, so that the operation of the maintainer is facilitated. Because in the 90 degree state, the handcart can not shake because the limit bolt touches the ground. However, in the process of treatment, the handcart is required to be rocked in and out for many times, so that maintenance personnel need to repeatedly overturn the handcart, and the method is extremely easy to cause the damage of the whole breaker, the extrusion deformation of the pole head contact, the deflection damage of the spring mechanism, the injury of the maintenance personnel and the like, thereby causing larger damage.
Disclosure of Invention
The invention aims to solve the technical problem of providing a chassis overhauling device for a vacuum circuit breaker of a 10-kilovolt centrally installed switchgear, which shortens overhauling time.
In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides a put cabinet vacuum circuit breaker chassis maintenance device in 10 kilovolts, includes the frame, can follow the lifting support of the vertical lift of frame, be used for driving the linear drive ware that lifting support goes up and down, locate two clamping arms that lifting support left and right sides and extend forward, articulate in the inboard upset support of clamping arm front end, two clamping arms are connected with the control and open and close control structure that opens and shuts, the bottom four corners of frame is equipped with the wheel, be equipped with linear guide between lifting support and the frame, the upset support is fixed with vacuum circuit breaker, the upset support is connected with the angular positioning structure of fixed upset support angle.
Optionally, the lifting support includes rectangular frame, and two clamping arms articulate respectively in rectangular frame upside crossbeam both ends, open and shut control structure includes the hand wheel of being connected with rectangular frame upside crossbeam, the gear of being connected with the hand wheel, with left rack and right rack of gear engagement, with left rack articulated left connecting rod, with right rack articulated right connecting rod, left connecting rod is articulated with left side clamping arm, right connecting rod is articulated with right side clamping arm.
Optionally, the turnover support comprises a disc part hinged with the clamping arm and a fixing plate extending from the disc part to the radial outside, and the fixing plate is connected with a fixing bolt fixed with the chassis.
Optionally, the angle positioning structure includes a set of locating holes arranged in a fan shape along the circumference of the disc part, a fixing hole formed on the clamping arm, and a locating pin passing through the fixing hole and selectively inserted into one of the locating holes.
Optionally, the linear driver is a jack.
Optionally, the frame includes the level setting and the open side frame of the preceding U type structure, the door type frame of being connected with base U type both sides wall, connects between U type both sides wall and locates the crossbeam of lifting support below, linear guide locates on the door type frame left and right sides door frame, the jack is arranged in on the crossbeam.
Optionally, a grab rail is connected between the base and the door frame on the left and right sides of the door-shaped frame, and a connecting rod is connected between the grab rail and the door frame.
Optionally, a sleeve for placing a crow bar is arranged on the base.
The invention adopts the technical scheme and has the following beneficial effects:
1. the circuit breaker body is clamped and fixed through the two movable clamping arms, the lifting support and the circuit breaker are lifted up and down under the action of the linear driver, and the overturning and positioning are realized through the overturning support, so that the lifting and overturning functions can be realized, the overhaul is convenient, and the circuit breaker has the advantages of low cost, good safety performance and strong operability.
2. The circuit breaker body is tightly locked through the clamping arm, the circuit breaker is stable and firm, the overturning bracket can realize overturning at any position of the circuit breaker, and the circuit breaker is fixed at any (angle) position through the positioning structure.
3. The frame has good overall stability, stable structure and difficult overturning.
4. The jack is used for lifting the lifting bracket up and down, and is convenient and labor-saving.
5. The device is convenient to move through the arrangement of the idler wheels on the frame.
The specific technical scheme and the beneficial effects of the invention are described in detail in the following detailed description with reference to the accompanying drawings.
Drawings
The invention is further described with reference to the drawings and detailed description which follow:
FIG. 1 is a side view of a first embodiment of the present invention;
FIG. 2 is a front view of a first embodiment of the present invention;
fig. 3 is a schematic partial structure of a second embodiment.
Detailed Description
Example 1
As shown in fig. 1 and 2, the chassis overhauling device of the 10 kilovolt centrally installed switchgear vacuum circuit breaker comprises a frame 1, a lifting bracket 2 capable of lifting vertically along the frame, a linear driver for driving the lifting bracket to lift, two clamping arms 3 arranged on the left side and the right side of the lifting bracket and extending forwards, and a turnover bracket 31 hinged on the inner side of the front end of the clamping arms, wherein the two clamping arms are connected with an opening and closing control structure for controlling opening and closing, wheels 13 are arranged at four corners of the bottom of the frame, a linear guide rail is arranged between the lifting bracket and the frame, the turnover bracket is fixed with the vacuum circuit breaker, and the turnover bracket is connected with an angle positioning structure for fixing the angle of the turnover bracket.
The lifting support 2 comprises a rectangular frame, two clamping arms are respectively hinged to two ends of a cross beam on the upper side of the rectangular frame, and the opening and closing control structure comprises a hand wheel 21 connected with the cross beam on the upper side of the rectangular frame, a gear connected with the hand wheel, a left rack and a right rack meshed with the gear, a left connecting rod hinged with the left rack and a right connecting rod hinged with the right rack, wherein the left connecting rod is hinged with the left clamping arm, and the right connecting rod is hinged with the right clamping arm. It will be appreciated by those skilled in the art that the left and right racks may be arranged in parallel up and down, such that the hand wheel rotates, and the gears drive the left and right racks to move in opposite directions, and then pull/push the left and right clamping arms to clamp or open via the left and right links, respectively. After clamping, the hand wheel can be locked in position to realize clamping and holding.
The turnover bracket 31 includes a disc portion hinged to the clamp arm, and a fixing plate extending radially outward from the disc portion, and the fixing plate is connected with a fixing bolt fixed to the chassis. The angle positioning structure comprises a group of positioning holes which are arranged in a fan shape along the circumferential direction of the disc part, a fixing hole which is formed in the clamping arm, and a positioning pin which penetrates through the fixing hole and is selectively inserted into one of the positioning holes, so that the circuit breaker is fixed at any angle.
The linear driver is a jack 4, so that the lifting device is convenient and labor-saving, and can realize the lifting of a large weight. The frame 1 comprises a U-shaped structure base 11 which is horizontally arranged and provided with a forward opening, a door-shaped frame 12 connected with two U-shaped side walls of the base, and a cross beam which is connected between the two U-shaped side walls and arranged below the lifting support, wherein the linear guide rail is arranged on door frames at the left side and the right side of the door-shaped frame, and the jack is arranged on the cross beam. Therefore, the whole stability of the frame is good, and the sleeve for placing the pry bar for the jack is arranged on the base, so that the jack can be conveniently operated.
The door frame and the base on the left side and the right side of the door frame are connected with a grab bar 14, a connecting rod is connected between the grab bar and the door frame, and the door frame can be pushed and pulled by the grab bar to move.
Example two
Referring to fig. 3, the difference from the first embodiment is that the lifting support is provided with a transverse guide rail 22, the transverse guide rail is connected with a clamping arm assembly, the clamping arm assembly includes a left clamping arm and a right clamping arm which are separately arranged side by side, the inner sides of the front ends of the left clamping arm and the right clamping arm are hinged with a turnover support 31, the left clamping arm and the right clamping arm are respectively connected with a transverse ball screw 23 through a left nut and a right nut, the transverse ball screw is connected with a clamping motor, the clamping motor drives the transverse ball screw, the transverse ball screw drives a left nut and a right nut to move, and the left nut and the right nut respectively drive the left clamping arm and the right clamping arm to move along the transverse guide rail, so that the clamping is convenient to operate.
Further, hydraulic rods are arranged on the left clamping arm and the right clamping arm, and are connected with the overturning bracket and drive the overturning bracket to rotate. The reversing bracket is controlled to rotate through the hydraulic control rod, so that more labor is saved, and the angle can be automatically fixed after the reversing bracket is overturned to a set angle.
It will be appreciated by those skilled in the art that the above-mentioned "transverse" and "left-right" orientations are described by taking the use state of the device as an example, and the chassis extends in the left-right direction, and the left-right direction can be interchanged, which does not limit the scope of the present invention.
Through actual operation verification, the lifting turnover type auxiliary overhauling device is used for overhauling the chassis of the KYN28 type circuit breaker, so that the fault defect eliminating time is greatly reduced.
The lifting turnover type auxiliary equipment is used for overhauling the chassis of the circuit breaker, so that the overhauling time overlength caused by repeated turnover is successfully shortened, the requirement that the power failure of a circuit is not more than 1 hour is met, the power supply reliability is improved, the power failure and transmission time is shortened, domestic electricity is better ensured, a good power supply service image is better established in society, and the power supply service quality is improved.
While the invention has been described in terms of specific embodiments, it will be appreciated by those skilled in the art that the invention is not limited to the specific embodiments described above. Any modifications which do not depart from the functional and structural principles of the present invention are intended to be included within the scope of the appended claims.
Claims (1)
1.10 kilovolt centrally installed switchgear vacuum circuit breaker chassis overhauls device, its characterized in that: the lifting device comprises a frame, a lifting bracket capable of lifting vertically along the frame, a linear driver for driving the lifting bracket to lift, two clamping arms arranged on the left side and the right side of the lifting bracket and extending forwards, and a turnover bracket hinged on the inner side of the front end of the clamping arm, wherein the clamping arm assembly comprises a left clamping arm and a right clamping arm which are arranged side by side and separated from each other, the two clamping arms are connected with an opening and closing control structure for controlling opening and closing, wheels are arranged at four corners of the bottom of the frame, a linear guide rail is arranged between the lifting bracket and the frame, the turnover bracket is fixed with a vacuum circuit breaker, and the turnover bracket is connected with an angle positioning structure for fixing the angle of the turnover bracket; the lifting support comprises a rectangular frame, two clamping arms are respectively hinged to two ends of a cross beam on the upper side of the rectangular frame, the opening and closing control structure comprises a hand wheel connected with the cross beam on the upper side of the rectangular frame, a gear connected with the hand wheel, a left rack and a right rack meshed with the gear, a left connecting rod hinged with the left rack, and a right connecting rod hinged with the right rack, wherein the left connecting rod is hinged with the left clamping arm, and the right connecting rod is hinged with the right clamping arm; the turnover support comprises a disc part hinged with the clamping arm and a fixing plate extending radially outwards from the disc part, and the fixing plate is connected with a fixing bolt fixed with the chassis; the angle positioning structure comprises a group of positioning holes which are arranged in a fan shape along the circumferential direction of the disc part, a fixing hole which is arranged on the clamping arm, and a positioning pin which penetrates through the fixing hole and is selectively inserted into one of the positioning holes; the linear driver is a jack; the frame comprises a U-shaped structure base which is horizontally arranged and provided with a forward opening, a door-shaped frame which is connected with two U-shaped side walls of the base, and a cross beam which is connected between the two U-shaped side walls and is arranged below the lifting bracket, wherein the linear guide rail is arranged on door frames on the left side and the right side of the door-shaped frame, and the jack is arranged on the cross beam; a grab bar is connected between the door frame and the base at the left side and the right side of the door frame, and a connecting rod is connected between the grab bar and the door frame; the base is provided with a sleeve for placing a crow bar; the lifting support is provided with a transverse guide rail, the transverse guide rail is connected with the clamping arm assembly, the inner sides of the front ends of the left clamping arm and the right clamping arm are hinged with the overturning support, and the left clamping arm and the right clamping arm are respectively connected with a transverse ball screw through a left nut and a right nut; the left rack and the right rack can be arranged up and down in parallel, so that the hand wheel rotates, the left rack and the right rack are driven by the gear to move in opposite directions, and then the left clamping arm and the right clamping arm are respectively pulled/pushed to clamp or open through the left connecting rod and the right connecting rod; then clamping, the hand wheel can be locked in position, so that clamping and holding are realized; the transverse ball screw is connected with the clamping motor, the clamping motor drives the transverse ball screw, the transverse ball screw drives the left nut and the right nut to move, the left nut and the right nut drive the left clamping arm and the right clamping arm to move along the transverse guide rail respectively, and the clamping arms are driven to clamp through the clamping motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910120265.8A CN109904768B (en) | 2019-02-18 | 2019-02-18 | Chassis overhauling device for vacuum circuit breaker of 10 kilovolt centrally installed switchgear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910120265.8A CN109904768B (en) | 2019-02-18 | 2019-02-18 | Chassis overhauling device for vacuum circuit breaker of 10 kilovolt centrally installed switchgear |
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| Publication Number | Publication Date |
|---|---|
| CN109904768A CN109904768A (en) | 2019-06-18 |
| CN109904768B true CN109904768B (en) | 2023-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910120265.8A Active CN109904768B (en) | 2019-02-18 | 2019-02-18 | Chassis overhauling device for vacuum circuit breaker of 10 kilovolt centrally installed switchgear |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110797786A (en) * | 2019-11-27 | 2020-02-14 | 山西汾西电气有限公司 | Manual-automatic propelled circuit breaker isolation body in mining high-voltage power distribution cabinet |
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|---|---|---|---|---|
| JPH09200914A (en) * | 1996-01-22 | 1997-07-31 | Terasaki Denki Sangyo Kk | Lifter device for breaker |
| JP2000069627A (en) * | 1998-08-21 | 2000-03-03 | Meidensha Corp | Gas-insulated switchgear |
| CN102157906A (en) * | 2011-05-17 | 2011-08-17 | 江苏省电力公司常州供电公司 | Clamping device of handcart breaker equipment maintenance car |
| CN102315600A (en) * | 2011-05-17 | 2012-01-11 | 江苏省电力公司常州供电公司 | Maintenance car of handcart type breaker equipment |
| CN105576540A (en) * | 2016-03-08 | 2016-05-11 | 江苏省电力公司常州供电公司 | Centrally-installed switchgear intelligent maintenance dolly |
| CN105932580A (en) * | 2016-06-02 | 2016-09-07 | 国网山东省电力公司济南供电公司 | Overhaul platform of switch handcart |
| CN106314506A (en) * | 2016-08-23 | 2017-01-11 | 郭强 | Hospital flower pot handling device |
| CN107732737A (en) * | 2017-11-28 | 2018-02-23 | 国网江苏省电力有限公司连云港供电分公司 | Middle-placed switch cabinet handcart type breaker Multifunctional repair |
| CN107919624A (en) * | 2017-11-10 | 2018-04-17 | 国网浙江省电力公司台州供电公司 | The platform of 10kV chassis of circuit breaker vehicle overhaulings |
| CN108321710A (en) * | 2018-02-09 | 2018-07-24 | 国网江苏省电力有限公司连云港供电分公司 | A kind of multifunctional hand vehicle type overhaul of line breaker vehicle |
-
2019
- 2019-02-18 CN CN201910120265.8A patent/CN109904768B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09200914A (en) * | 1996-01-22 | 1997-07-31 | Terasaki Denki Sangyo Kk | Lifter device for breaker |
| JP2000069627A (en) * | 1998-08-21 | 2000-03-03 | Meidensha Corp | Gas-insulated switchgear |
| CN102157906A (en) * | 2011-05-17 | 2011-08-17 | 江苏省电力公司常州供电公司 | Clamping device of handcart breaker equipment maintenance car |
| CN102315600A (en) * | 2011-05-17 | 2012-01-11 | 江苏省电力公司常州供电公司 | Maintenance car of handcart type breaker equipment |
| CN105576540A (en) * | 2016-03-08 | 2016-05-11 | 江苏省电力公司常州供电公司 | Centrally-installed switchgear intelligent maintenance dolly |
| CN105932580A (en) * | 2016-06-02 | 2016-09-07 | 国网山东省电力公司济南供电公司 | Overhaul platform of switch handcart |
| CN106314506A (en) * | 2016-08-23 | 2017-01-11 | 郭强 | Hospital flower pot handling device |
| CN107919624A (en) * | 2017-11-10 | 2018-04-17 | 国网浙江省电力公司台州供电公司 | The platform of 10kV chassis of circuit breaker vehicle overhaulings |
| CN107732737A (en) * | 2017-11-28 | 2018-02-23 | 国网江苏省电力有限公司连云港供电分公司 | Middle-placed switch cabinet handcart type breaker Multifunctional repair |
| CN108321710A (en) * | 2018-02-09 | 2018-07-24 | 国网江苏省电力有限公司连云港供电分公司 | A kind of multifunctional hand vehicle type overhaul of line breaker vehicle |
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