CN113794141A - Tool for overhauling 10kV switch cabinet current transformer - Google Patents
Tool for overhauling 10kV switch cabinet current transformer Download PDFInfo
- Publication number
- CN113794141A CN113794141A CN202111162265.8A CN202111162265A CN113794141A CN 113794141 A CN113794141 A CN 113794141A CN 202111162265 A CN202111162265 A CN 202111162265A CN 113794141 A CN113794141 A CN 113794141A
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- CN
- China
- Prior art keywords
- current transformer
- fixed pulley
- support frame
- switch cabinet
- tool
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 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)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention discloses a tool for overhauling a 10kV switch cabinet current transformer, which comprises a support frame, a front arm, a pull rope, a pulley block and a baffle, wherein the front arm is connected to the upper part of the support frame, the pulley block comprises a first fixed pulley, a second fixed pulley and a reel, the first fixed pulley and the second fixed pulley are respectively arranged at two ends of the front arm, one end of the pull rope is wound on the reel, the other end of the pull rope is connected with one end, far away from the support frame, of the bottom of the current transformer after passing around the second fixed pulley and the first fixed pulley, the baffle is connected to the support frame, and the baffle supports the side face, facing the support frame, of the current transformer. The invention provides a tool for overhauling a 10kV switch cabinet current transformer, which is kept in a vertical state in the lifting process of the current transformer, so that an installation hole of the current transformer is conveniently aligned with a positioning hole of a switch cabinet.
Description
Technical Field
The invention relates to the technical field of overhauling current transformers, in particular to a tool for overhauling a 10kV switch cabinet current transformer.
Background
The application of the 10kV high-voltage switch cabinet in the transformer substation is more and more extensive, but along with the increase of the electric load, the load of a 10kV line is increased, the original current transformer transformation ratio cannot meet the increase of the electric load, and therefore the transformation ratio with larger capacity needs to be replaced. At present, when a new current transformer is replaced, a rope is adopted to manually lift up to a corresponding position and then to go up to a screw valley bottom, for example, a combined type electric lifting device with the publication number of CN203434492U forms an electric lifter by utilizing a steel rope, a pulley and the like, and the steel rope lifts up the current transformer. However, the current transformer is often inclined in the lifting process, and the mounting hole of the current transformer is not convenient to align with the positioning hole of the switch cabinet.
Disclosure of Invention
Aiming at the prior art, the invention provides a tool for overhauling a current transformer of a 10kV switch cabinet, which keeps a vertical state in the lifting process of the current transformer and is convenient for aligning an installation hole of the current transformer with a positioning hole of the switch cabinet.
The technical scheme of the invention is realized as follows:
the utility model provides an overhaul 10kV cubical switchboard current transformer's instrument, includes support frame, forearm, stay cord, assembly pulley and baffle, the forearm is connected the upper portion of support frame, the assembly pulley includes first fixed pulley, second fixed pulley and reel, first fixed pulley and second fixed pulley set up respectively the both ends of forearm, stay cord one end winding is in on the reel, the other end is walked around connect the current transformer bottom behind second fixed pulley, the first fixed pulley and is kept away from the one end of support frame, the baffle is connected on the support frame, the baffle supports current transformer orientation the side of support frame.
Furthermore, the number of the pull ropes is two, and the two pull ropes are respectively connected with the bottoms of the current transformers from two sides.
Furthermore, be located the terminal both sides of forearm are equipped with the third fixed pulley respectively, the third fixed pulley is installed on the connecting rod, the connecting rod with the forearm rotates to be connected, just the rotation center of connecting rod coincides with the axle center of first fixed pulley, third fixed pulley place plane with the periphery of first fixed pulley is tangent.
Furthermore, the tail end of the pull rope is provided with a clamping device for being inserted into a positioning hole of the current transformer.
Furthermore, the clamping device comprises a sleeve, a pull rod, a shifting piece and a conical head, wherein a through hole is formed in the side wall below the sleeve, the shifting piece is rotatably connected to the bottom of the through hole, the upper surface of the shifting piece is arc-shaped, the circle center of the arc-shaped shifting piece coincides with the rotating shaft of the shifting piece, the pull rod penetrates through the sleeve, the conical head is arranged at the bottom of the pull rod, the shifting piece is pushed to rotate outwards when the conical head moves upwards, and the conical head is pushed to move downwards when the shifting piece rotates inwards.
Furthermore, the pull rope is connected with the pull rod, and a conical plug is arranged at the bottom of the sleeve.
Further, the support frame includes horizontal pole and vertical pole, two vertical pole parallel arrangement, two the vertical pole passes through the horizontal pole is connected, the horizontal pole along the equidistant setting of direction of vertical pole.
Furthermore, the winding drum is rotatably connected to the support frame, and the winding drum is provided with a hand wheel.
Furthermore, the support frame is installed on the mobile plate trolley.
The invention has the beneficial effects that: the support frame plays the effect of support, and the forearm of support frame top stretches out forward, has set up first fixed pulley and second fixed pulley at the both ends of forearm, and the stay cord is connected the current transformer bottom and is kept away from after bypassing second fixed pulley, first fixed pulley the one end of support frame, the stay cord upwards stimulates current transformer, rolls up the stay cord through the reel to can upwards improve current transformer. The baffle is connected on the support frame, has supported current transformer from the side, and current transformer is in vertical state under the combined action of stay cord and baffle. And the position of the support frame is used for moving the current transformer to the switch cabinet for installation. The invention can ensure that the current transformer is kept in a vertical state, the positioning holes of the current transformer are positioned on the same horizontal plane, and the bottom of the current transformer is flush with the mounting frame of the switch cabinet, so that a plurality of positioning holes of the current transformer are conveniently aligned with the mounting hole of the switch cabinet at the same time. According to the invention, the bottom of the current transformer is not required to be provided with the supporting plate, and the maintenance tool is convenient to separate from the current transformer after being placed in place.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only preferred embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a perspective view of a tool for servicing a 10kV switchgear current transformer of the present invention;
FIG. 2 is a side view of a tool for servicing a 10kV switchgear current transformer of the present invention;
FIG. 3 is a front view of a tool for servicing a 10kV switchgear current transformer of the present invention;
FIG. 4 is a cross-sectional view of the fastener of the present invention;
in the figure, 1 support frame, 2 forearms, 3 pull ropes, 4 pulley blocks, 5 baffles, 6 first fixed pulleys, 7 second fixed pulleys, 8 reels, 9 third fixed pulleys, 10 connecting rods, 11 clamping devices, 12 sleeves, 13 pull rods, 14 shifting pieces, 15 conical heads, 16 through holes, 17 conical plugs, 18 transverse rods, 19 longitudinal rods, 20 hand wheels and 21 moving lathes.
Detailed Description
In order to better understand the technical content of the invention, specific embodiments are provided below, and the invention is further described with reference to the accompanying drawings.
Referring to fig. 1 ~ 4, an instrument of overhauing 10kV cubical switchboard current transformer, includes support frame 1, forearm 2, stay cord 3, assembly pulley 4 and baffle 5, forearm 2 is connected the upper portion of support frame 1, assembly pulley 4 includes first fixed pulley 6, second fixed pulley 7 and reel 8, first fixed pulley 6 and second fixed pulley 7 set up respectively the both ends of forearm 2, 3 one end windings of stay cord are in on reel 8, the other end is walked around connect current transformer bottom behind second fixed pulley 7, the first fixed pulley 6 and keep away from the one end of support frame 1, baffle 5 is connected on support frame 1, baffle 5 supports current transformer orientation the side of support frame 1.
Specifically, the number of the pull ropes 3 is two, and the two pull ropes 3 are respectively connected with the bottoms of the current transformers from two sides. The current transformer is hoisted by the pull rope 3 from two sides, so that the two sides of the current transformer are stressed in balance, and the mounting holes at the bottom of the current transformer are kept on the same horizontal plane.
Specifically, be located 2 terminal both sides of forearm are equipped with third fixed pulley 9 respectively, third fixed pulley 9 is installed on connecting rod 10, connecting rod 10 with 2 rotations of forearm are connected, just the rotation center of connecting rod 10 coincides with the axle center of first fixed pulley 6, third fixed pulley 9 place plane with the periphery of first fixed pulley 6 is tangent. The first fixed pulley 6 is positioned above the middle of the current transformer, and the third fixed pulley 9 acts on the pull rope 3 between the first fixed pulley 6 and the current transformer. The pull rope 3 winds around the third fixed pulley 9 and then the first fixed pulley 6, and after the acting force of the pull rope 3 is received, the connecting rod 10 rotates to dynamically change the direction of the pull rope 3. The third fixed pulley 9 can dynamically change the direction of the pull rope 3, and when the current transformer rises, the pull rope 3 is prevented from being separated from the first fixed pulley 6 due to an overlarge included angle. The rope section of the pulling rope 3 from the first fixed pulley 6 to the third fixed pulley 9 and the rope section of the pulling rope 3 from the third fixed pulley 9 to the current transformer can be kept in the same plane.
Specifically, the tail end of the pull rope 3 is provided with a clamping device 11 for being inserted into a positioning hole of the current transformer. The tail end of the pull rope 3 is fixed in a positioning hole of the current transformer through the clamping piece, so that the pull rope 3 is conveniently connected with the current transformer.
Specifically, the clamping device 11 includes a sleeve 12, a pull rod 13, a shifting piece 14 and a conical head 15, the upper surface of the shifting piece 14 is arc-shaped, the center of the arc-shaped circle coincides with the rotating shaft of the shifting piece 14, the pull rod 13 penetrates through the sleeve 12, the conical head 15 is arranged at the bottom of the pull rod 13, the conical head 15 pushes the shifting piece 14 to rotate outwards when moving upwards, and the shifting piece 14 pushes the conical head 15 to move downwards when rotating inwards. The side wall below the sleeve 12 is provided with a through hole 16, the poking sheet 14 is rotatably connected to the through hole 16, and the poking sheet 14 can be accommodated in the through hole 16 or extend out of the through hole 16 when rotating. The clamping device 11 penetrates through the positioning hole of the current transformer and can be clamped at the bottom edge of the positioning hole of the current transformer when the shifting piece 14 extends out. The upper surface of plectrum 14 is the arc, just the centre of a circle of arc with the pivot coincidence of plectrum 14, under the different circumstances of the range of stretching out of plectrum 14 rotation, the extension line of current transformer to plectrum 14 effort all passes through the rotation center of plectrum 14, and plectrum 14 can be firm the card at current transformer's through-hole 16. When the current transformer is aligned with the mounting hole of the switch cabinet and then put down, the through hole 16 of the switch cabinet pushes the shifting piece 14 to enable the shifting piece 14 to rotate and store in the through hole 16, the gravity center of current mutual inductance is not changed when the shifting piece 14 rotates in the through hole 16, and the clamping device 11 and the current transformer are convenient to separate from each other. The phenomenon that the current transformer jolts due to the fact that the gravity center of the current transformer is lowered after being lifted can be avoided.
In the using process of the invention, firstly, the clamping device 11 is inserted into the positioning hole of the current transformer, then the pull rod 13 is pulled upwards, the pull rod 13 drives the conical head 15 to move upwards to push the shifting piece 14 out of the positioning hole for clamping the current transformer. After the shifting piece 14 extends to enable the clamping device 11 to clamp the positioning hole, the pull rod 13 can freely move up and down, and the pull rod 13 can move up and down without influencing the rotation of the shifting piece 14. After the shifting piece 14 extends out to enable the clamping device 11 to clamp the positioning hole, the bottom of the clamping device 11 can stand on the ground, the clamping device 11 serves as a supporting leg to support the current transformer, the shifting piece 14 is clamped more firmly under the pressure action of the current transformer, the clamping device 11 and the current transformer are conveniently connected one by one, and the pull rope 3 does not need to be tensioned all the time when the clamping device 11 and the current transformer are connected one by one. The pull rod 13 moves upwards by winding the pull rope 3 through the winding drum, and the conical head 15 moves upwards to prevent the shifting piece 14 from rotating inwards, so that the safety is improved. When the current transformer is aligned with a mounting hole of a switch cabinet and then put down, the through hole 16 of the switch cabinet pushes the shifting piece 14 to rotate and store the shifting piece 14 into the through hole 16, the sleeve 12 is grasped to lift the clamping device 11 upwards, and the clamping device 11 is separated from the current transformer.
Specifically, the pull rope 3 is connected with the pull rod 13, and the bottom of the sleeve 12 is provided with a conical plug 17. The conical plug 17 is convenient to insert into a mounting hole of the switch cabinet, and is convenient for positioning the current transformer.
Specifically, the support frame 1 comprises a cross rod 18 and longitudinal rods 19, the two longitudinal rods 19 are arranged in parallel, the two longitudinal rods 19 are connected through the cross rod 18, and the cross rod 18 is arranged at equal intervals along the direction of the longitudinal rods 19. The cross bar 18 and the longitudinal bar 19 are connected to form a frame structure, and the frame structure plays a role in stably supporting the current transformer in a hanging mode.
Specifically, the reel rotates and connects on support frame 1, the reel is provided with hand wheel 20. The winding drum is rotated by the hand wheel 20, so that the pull rope 3 is conveniently wound.
Specifically, the support frame 1 is mounted on a mobile plate trailer 21. Facilitating the movement of the support 1.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. The utility model provides an overhaul 10kV cubical switchboard current transformer's instrument, a serial communication port, including support frame, forearm, stay cord, assembly pulley and baffle, the forearm is connected the upper portion of support frame, the assembly pulley includes first fixed pulley, second fixed pulley and reel, first fixed pulley and second fixed pulley set up respectively the both ends of forearm, stay cord one end winding is in on the reel, the other end is walked around connect current transformer bottom behind second fixed pulley, the first fixed pulley and is kept away from the one end of support frame, the baffle is connected on the support frame, the baffle supports current transformer orientation the side of support frame.
2. The tool for overhauling the current transformer of the 10kV switch cabinet as recited in claim 1, wherein the number of the pull ropes is two, and the two pull ropes are respectively connected with the bottom of the current transformer from two sides.
3. The tool for overhauling a 10kV switch cabinet current transformer as recited in claim 2, wherein third fixed pulleys are respectively arranged at two sides of the tail end of the front arm, the third fixed pulleys are installed on a connecting rod, the connecting rod is rotatably connected with the front arm, the rotation center of the connecting rod is coincided with the axis of the first fixed pulley, and the plane where the third fixed pulley is located is tangent to the periphery of the first fixed pulley.
4. A tool for servicing a 10kV switchgear current transformer according to claim 1, wherein the end of the pulling rope is provided with a clamping device for inserting into a positioning hole of the current transformer.
5. The tool for overhauling a 10kV switch cabinet current transformer as recited in claim 4, wherein the clamping device comprises a sleeve, a pull rod, a shifting piece and a conical head, a through hole is formed in a side wall below the sleeve, the shifting piece is rotatably connected to the bottom of the through hole, the upper surface of the shifting piece is arc-shaped, the center of the arc-shaped circle coincides with a rotating shaft of the shifting piece, the pull rod penetrates through the sleeve, the conical head is arranged at the bottom of the pull rod, the conical head pushes the shifting piece to rotate outwards when moving upwards, and the conical head is pushed to move downwards when the shifting piece rotates inwards.
6. A tool for overhauling a 10kV switch cabinet current transformer according to claim 4, wherein the pull rope is connected with the pull rod, and a conical plug is arranged at the bottom of the sleeve.
7. The tool for overhauling a 10kV switch cabinet current transformer as recited in claim 1, wherein the supporting frame comprises a cross bar and a longitudinal bar, the two longitudinal bars are arranged in parallel, the two longitudinal bars are connected through the cross bar, and the cross bar is arranged at equal intervals along the direction of the longitudinal bars.
8. An apparatus for overhauling a 10kV switch cabinet current transformer as recited in claim 1, wherein the winding drum is rotatably connected to the supporting frame, and the winding drum is provided with a hand wheel.
9. An instrument for servicing a 10kV switchgear current transformer in accordance with claim 1, wherein the support bracket is mounted on a mobile trolley.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111162265.8A CN113794141A (en) | 2021-09-30 | 2021-09-30 | Tool for overhauling 10kV switch cabinet current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111162265.8A CN113794141A (en) | 2021-09-30 | 2021-09-30 | Tool for overhauling 10kV switch cabinet current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113794141A true CN113794141A (en) | 2021-12-14 |
Family
ID=78877735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111162265.8A Withdrawn CN113794141A (en) | 2021-09-30 | 2021-09-30 | Tool for overhauling 10kV switch cabinet current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113794141A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114227603A (en) * | 2021-12-24 | 2022-03-25 | 国网山东省电力公司枣庄供电公司 | Current transformer drainage wire appurtenance |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203434492U (en) * | 2013-08-27 | 2014-02-12 | 江西萍乡供电公司 | Combination-type electric hoisting apparatus |
| CN109244912A (en) * | 2018-10-30 | 2019-01-18 | 国网山东省电力公司潍坊供电公司 | 10kV intermediate switchgear cabinet current transformer replaces specific purpose tool |
| CN208723411U (en) * | 2018-08-06 | 2019-04-09 | 国网湖南省电力有限公司 | Central-positioned high-voltage switch cabinet current transformer replaces trolley |
| CN112340652A (en) * | 2020-11-25 | 2021-02-09 | 国网山东省电力公司东平县供电公司 | Special trolley for replacing current transformer of armored switch cabinet |
| CN213228787U (en) * | 2020-09-26 | 2021-05-18 | 山东中腾电气科技有限公司 | Switch cabinet transferring tool |
-
2021
- 2021-09-30 CN CN202111162265.8A patent/CN113794141A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203434492U (en) * | 2013-08-27 | 2014-02-12 | 江西萍乡供电公司 | Combination-type electric hoisting apparatus |
| CN208723411U (en) * | 2018-08-06 | 2019-04-09 | 国网湖南省电力有限公司 | Central-positioned high-voltage switch cabinet current transformer replaces trolley |
| CN109244912A (en) * | 2018-10-30 | 2019-01-18 | 国网山东省电力公司潍坊供电公司 | 10kV intermediate switchgear cabinet current transformer replaces specific purpose tool |
| CN213228787U (en) * | 2020-09-26 | 2021-05-18 | 山东中腾电气科技有限公司 | Switch cabinet transferring tool |
| CN112340652A (en) * | 2020-11-25 | 2021-02-09 | 国网山东省电力公司东平县供电公司 | Special trolley for replacing current transformer of armored switch cabinet |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114227603A (en) * | 2021-12-24 | 2022-03-25 | 国网山东省电力公司枣庄供电公司 | Current transformer drainage wire appurtenance |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20211214 |
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| WW01 | Invention patent application withdrawn after publication |