CN117003110A - Power transformer insulating sleeve lifting device - Google Patents
Power transformer insulating sleeve lifting device Download PDFInfo
- Publication number
- CN117003110A CN117003110A CN202310975207.XA CN202310975207A CN117003110A CN 117003110 A CN117003110 A CN 117003110A CN 202310975207 A CN202310975207 A CN 202310975207A CN 117003110 A CN117003110 A CN 117003110A
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- China
- Prior art keywords
- fixedly connected
- strip
- insulating sleeve
- rotating shaft
- shaped
- Prior art date
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- 230000007246 mechanism Effects 0.000 claims abstract description 32
- 230000000694 effects Effects 0.000 claims description 19
- 230000009471 action Effects 0.000 claims description 18
- 230000002457 bidirectional effect Effects 0.000 claims description 13
- 238000000034 method Methods 0.000 abstract description 28
- 230000008569 process Effects 0.000 abstract description 11
- 238000009434 installation Methods 0.000 description 32
- 238000001125 extrusion Methods 0.000 description 24
- 230000002349 favourable effect Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000013011 mating Effects 0.000 description 3
- 238000010030 laminating Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/42—Gripping members engaging only the external or internal surfaces of the articles
- B66C1/44—Gripping members engaging only the external or internal surfaces of the articles and applying frictional forces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/08—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions
Abstract
The invention relates to the technical field of power equipment, in particular to a lifting device for an insulating sleeve of a power transformer, which comprises a strip-shaped frame, wherein two movable strips are connected inside the strip-shaped frame in a sliding manner, sleeve clamping mechanisms are connected to the movable strips, opposite moving mechanisms are connected to the two movable strips, one side of the strip-shaped frame is provided with a mounting rod, and a first rotating shaft is connected to the lower part of the mounting rod in a rotating manner; according to the invention, the mounting rod and the strip-shaped frame rotate at the rotating joint, so that the insulating sleeve is inclined around the first rotating shaft, and when one end of the insulating sleeve is inclined downwards in the adjusting process, the other end of the insulating sleeve is correspondingly inclined upwards, so that separate operations on two ends are not required, the central position of the insulating sleeve is coaxial with the first rotating shaft, and constructors can quickly find the central position of the insulating sleeve and mount the insulating sleeve after hoisting, thereby improving the mounting efficiency.
Description
Technical Field
The invention relates to the technical field of power equipment, in particular to a lifting device for an insulating sleeve of a power transformer.
Background
The transformer bushing is a main insulating device outside the transformer box, the outgoing lines of the transformer winding must pass through the insulating bushing, so that the outgoing lines and the transformer shell are insulated, and meanwhile, the transformer bushing plays a role of fixing the outgoing lines, and the transformer bushing is the insulating bushing for guiding high and low voltage leads inside the transformer to the outside of the oil tank, is used as the lead to ground for insulation, and plays a role of fixing the lead, and is one of current-carrying elements of the transformer, and in the operation of the transformer, load current passes for a long time, and short-circuit current passes when short-circuit occurs outside the transformer.
The invention of China, the application number of which is CN201410725134.X, discloses a hoisting device for an insulating sleeve of a power transformer, which comprises a hook, a bottom plate, ropes and two rope adjusting handles, wherein the hook is fixed on the central position of the bottom plate, the rope adjusting handles comprise handle heads and handle posts, the handle heads are fixedly connected with the handle posts, two through holes are symmetrically arranged at two ends of the bottom plate, the handle posts of the rope adjusting handles are arranged in the through holes, the handle heads are positioned on one side of the bottom plate where the hook is positioned, the outer circle of the handle heads is larger than the aperture of the through holes, and the handle posts of the rope adjusting handles are provided with spiral rope winding grooves, and the ropes are wound on the handle posts.
In the prior art, the length of lifting ropes at two ends is regulated in the lifting process of the insulating sleeve of the transformer, so that the insulating sleeve is obliquely inserted and lifted, but in the lifting process of the insulating sleeve, the lengths of the two ends are regulated respectively, so that the time consumed by regulating the angle is more, the work efficiency is not improved, the insulating sleeve is in the central point of lifting equipment to correspondingly change after the inclination angle is regulated, and constructors are not facilitated to quickly find the central position of the insulating sleeve and install the insulating sleeve.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a lifting device for an insulating sleeve of a power transformer.
In order to achieve the above purpose, the invention adopts the following technical scheme: the utility model provides a power transformer insulating sleeve hoist device, includes the bar frame, the inside sliding connection of bar frame has two movable strips, be connected with sleeve pipe fixture on the movable strip, two be connected with the mechanism that moves in opposite directions on the movable strip, make two movable strips be close to each other and keep away from through the effect of mechanism that moves in opposite directions;
One side of the strip-shaped frame is provided with a mounting rod, a first rotating shaft is rotationally connected below the mounting rod, one end of the first rotating shaft is fixedly connected to one side of the strip-shaped frame, the other end of the first rotating shaft is connected with a rotary positioning mechanism, and the mounting rod rotates around the first rotating shaft under the action of the rotary positioning mechanism and is positioned after rotating;
a placing groove is formed in the mounting rod, a limiting pin is axially limited in the placing groove and is rotated, and one end of the limiting pin penetrates through the mounting rod and extends to the upper side of the mounting rod to be fixedly connected with a hanging ring; during operation, prior art is at the in-process of hoisting the insulating sleeve of transformer, usually adopt the length of adjusting both ends lifting rope to carry out oblique plug-in hoist and mount to insulating sleeve, but at the in-process of hoisting insulating sleeve, adjust both ends length respectively, cause angle regulation's time more that expends, be unfavorable for improving work efficiency, and insulating sleeve is after angle of inclination has been adjusted, insulating sleeve is also can produce corresponding change in the central point on lifting device, be unfavorable for the constructor quick finding insulating sleeve's central point and install insulating sleeve, this technical scheme can solve above problem, specific operational mode is as follows: the position of two movable bars is adjusted through the effect of moving mechanism in opposite directions, make the distance of the one end that two movable bars deviate from mutually corresponding with insulating sleeve's length, be favorable to adjusting clamping position according to insulating sleeve's length, then through the effect of sleeve clamping mechanism, the both ends centre gripping of insulating sleeve is in corresponding movable bar bottom, hang the link at the hoisting end of crane, in the in-process of hoist and mount, make the installation pole rotate around first pivot through the effect of rotatory positioning mechanism, thereby adjust the angle of oblique plug-in hoist and mount, when the installation pole rotates around first pivot, the rotation junction of installation pole and bar frame is rotatory, thereby make insulating sleeve produce the slope around first pivot, when adjusting the in-process, the one end downward sloping of insulating sleeve, then do not need to separately operate the both ends, work efficiency is improved, and when insulating sleeve inclines, the central point of insulating sleeve and first pivot are coaxial, the central point that the rear constructor can be quick finds insulating sleeve installs insulating sleeve, installation efficiency has been improved, the installation link is through the effect of spacing pin and connection can not be done at the same position of rotation of installation pole at the installation pole, the installation staff.
Preferably, the opposite moving mechanism comprises a bidirectional screw, two movable grooves and two connecting rings, the two movable grooves are respectively arranged at two ends of the top of the bar-shaped frame, the bidirectional screw is rotationally connected to the top of the bar-shaped frame, the two connecting rings are respectively and fixedly connected to the tops of adjacent movable bars, one ends of the connecting rings extend to the upper part of the bar-shaped frame from the adjacent movable grooves, the two connecting rings are in threaded connection with the bidirectional screw, and the two ends of the bidirectional screw are fixedly connected with knobs; during operation, through the knob of rotating two-way screw rod one end, make two-way screw rod rotate at the rotation junction at bar frame top to through the threaded connection of go-between and two-way screw rod, thereby make two go-between be close to each other and keep away from each other along adjacent movable groove, drive two movable strips and be close to each other and keep away from each other, thereby adjust the distance between two movable strips, be favorable to adjusting clamping position according to insulating sleeve's length.
Preferably, the sleeve clamping mechanism comprises two U-shaped frames, the two U-shaped frames are respectively and fixedly connected to the bottoms of the adjacent movable strips, two clamping blocks are placed in the U-shaped frames, two first connecting pins are fixedly connected to one sides, deviating from the clamping blocks, of the two clamping blocks, the first connecting pins are slidably inserted into the adjacent U-shaped frames, first springs are sleeved on the first connecting pins, two ends of each first spring are respectively and fixedly connected to the adjacent U-shaped frames and one ends of each first connecting pin, two sides of each U-shaped frame are respectively and fixedly connected with extrusion bolts in a threaded manner, one end of each extrusion bolt penetrates through the side face of each U-shaped frame and extends to the inside of each U-shaped frame, and one end of each extrusion bolt is in contact with one side of each adjacent clamping block; during operation, through placing insulating sleeve's both ends respectively inside adjacent U type frame, then rotate the extrusion bolt of one side, make the one end of extrusion bolt pass through the inside removal of screw thread rotation to U type frame, the one end extrusion grip block of extrusion bolt, make the first connecting pin of grip block one side remove along slip grafting department, and extrude first spring and produce compression set, thereby make the opposite side laminating of grip block on insulating sleeve's cambered surface, rotate the opposite side extrusion bolt again, make another grip block remove, carry out the centre gripping through the cambered surface at insulating sleeve both ends, thereby with insulating sleeve centre gripping spacing in the inside of U type frame, the back rotation extrusion bolt, the grip block is after losing the extrusion of extrusion bolt one end, the elastic action of first spring makes two grip blocks keep away from each other, thereby release insulating sleeve's centre gripping.
Preferably, the rotary positioning mechanism comprises a first gear and a second rotating shaft, the first gear is fixedly connected to one end of the first rotating shaft, the second rotating shaft is rotatably connected to the inside of the placing groove, one end of the second rotating shaft penetrates through the mounting rod and extends to the outside of the mounting rod, then the second gear is fixedly connected with the second gear, the second gear is meshed with the first gear, a first connecting plate is fixedly connected to the end face of one end of the second rotating shaft, two second connecting pins are fixedly connected to one side of the first connecting plate, a second connecting plate is connected to the second connecting pins in a sliding insertion mode, a second spring is sleeved on the second connecting pins, two ends of the second spring are fixedly connected to the second connecting plate and one end of the adjacent second connecting pin respectively, a rotating ring is fixedly connected to the second connecting plate, one side of the rotating ring is fixedly connected with a plurality of inserting pins in a circumferential array, two sides of the mounting rod are fixedly connected with limiting rings, and the adjacent inserting pins are located in the limiting rings; during operation, the rotating ring is pulled to one side, the rotating ring drives the second connecting plate to move on the second connecting pin, the second spring is extruded to generate compression deformation, in the moving process of the rotating ring, the adjacent inserting pins are separated from the limiting ring, so that the rotating ring can rotate, then the rotating ring drives the second connecting plate to rotate, the second connecting plate is slidably inserted with the two inserting pins, the two inserting pins are driven to rotate, the first connecting plate is driven to rotate, the first connecting plate drives the second rotating shaft to rotate, so that the second gear rotates reversely through the meshing action of the first gear, the first rotating shaft is driven to rotate reversely, the strip-shaped frame in the rotating direction of the rotating ring rotates upwards under the rotating action of the first rotating shaft, so that the insulating sleeve is driven to tilt around the first rotating shaft, after the tilting angle of the insulating sleeve is adjusted, the rotating ring is loosened, the second spring stretches outwards under the elastic action of the compressed second spring, the second connecting plate is extruded to be close to the first connecting plate, the rotating ring moves along with the second connecting plate, the corresponding inserting pins on the rotating ring moves to the inside the limiting ring, and accordingly the first rotating shaft is prevented from being positioned and stable in the process of lifting the first rotating shaft, and the first rotating shaft is kept stable in the process of positioning and the first rotating shaft is guaranteed.
Preferably, a third rotating shaft is rotatably connected in the placing groove, one end of the third rotating shaft penetrates through the mounting rod and extends to the upper portion of the strip-shaped frame, a third gear is fixedly connected to the third rotating shaft, the third gear is located in the placing groove, a fourth gear is fixedly connected to one end of the second rotating shaft located in the placing groove, the third gear is meshed with the fourth gear, a fixed wheel is fixedly connected to one end of the third rotating shaft, sleeved rods are fixedly connected to two ends of the top of the strip-shaped frame, an elastic belt is placed between the two sleeved rods, two ends of the elastic belt are bound on the adjacent sleeved rods, a plurality of limiting holes are formed in the surface of the elastic belt, a plurality of limiting protrusions are fixedly connected to the surface of the fixed wheel in a circumferential array, and the limiting protrusions on the top are located in the adjacent limiting holes; during operation, the installation rod and the strip-shaped frame are connected through the first rotating shaft, when the first rotating shaft is broken in the process of hoisting the insulating sleeve, the strip-shaped frame and the insulating sleeve fall from a high position to cause the damage of the insulating sleeve and hurt personnel at the bottom easily, the technical scheme can solve the problems, the two ends of the elastic belt are sleeved on the adjacent sleeved rods, the elastic belt is positioned at the top of the fixed wheel, when the first rotating shaft is broken, the elastic belt is pulled through the fixed wheel, the two ends of the elastic belt pull the strip-shaped frame, the placing of the strip-shaped frame and the insulating sleeve are prevented from falling directly, the safety of the personnel and the insulating sleeve is ensured, when the second rotating shaft rotates and the strip-shaped frame at one end of the rotating direction of the second rotating shaft is inclined upwards, the second pivot drives the fourth gear rotation in the standing groove, the fourth gear makes the third gear reverse rotation through the meshing effect with the third gear, make the third pivot reverse rotation, the third pivot drives the tight pulley and rotates, thereby make the rotation direction of tight pulley and second pivot opposite, the tight pulley is at pivoted in-process, through spacing protruding and spacing hole's cooperation, make the elastic webbing of bar frame tilt up one end remove along the one end of downward sloping, the straight line distance of elastic webbing tilt up one end and third pivot shortens, and the elastic webbing length between corresponding reduction tilt up one end and the third pivot, thereby adapt to the distance change that the bar frame slope produced, reduce the excessive influence of dragging to hoist and mount of elastic webbing.
Preferably, the two sides of the mounting rod are both connected with a first connecting block in a sliding manner, the top of the first connecting block is fixedly connected with a third connecting pin, a second connecting block is inserted on the third connecting pin in a sliding manner, the second connecting block is fixedly connected to the side face of the mounting rod, a third spring is sleeved on the third connecting pin, two ends of the third spring are respectively and fixedly connected to the first connecting block and the second connecting block which are adjacent, one side of the first connecting block is rotationally connected with a connecting shaft, one end of the connecting shaft is fixedly connected with a limiting roller, and the limiting roller is positioned at the top of the elastic belt; during operation, the two limit rollers are positioned at the top of the elastic belt, and the first connecting block is stretched downwards under the elastic action of the third spring, so that the limit rollers press the elastic belt downwards, the elastic belt is always kept in a tight state, and the elastic belt is ensured to move along with the rotation of the fixed wheel.
Preferably, two ends of the movable bars, which deviate from each other, are fixedly connected with plug blocks, the plug blocks are slidably provided with L-shaped connecting rods, the bottom ends of the L-shaped connecting rods are fixedly connected with baffle plates, the baffle plates are located on one side of the clamping blocks, the two ends of one side of each strip-shaped frame are respectively provided with a rectangular bar, the L-shaped connecting rods are located at one ends of the rectangular bars, the rectangular bars are slidably provided with a plurality of fourth connecting pins, one ends of the fourth connecting pins are fixedly connected to one side of each strip-shaped frame, the fourth connecting pins are sleeved with fourth springs, two ends of each fourth spring are respectively fixedly connected to the strip-shaped frame and the adjacent rectangular bars, the inner parts of the rectangular bars are slidably connected with round bars, one ends of the round bars penetrate through the rectangular bars and extend to one side of the L-shaped connecting rods, the bottoms of the round bars are fixedly connected with arc-shaped plates, two adjacent ends of the rectangular bars are fixedly connected with matched plates, and one sides of the matched plates and the adjacent arc-shaped plates are respectively provided with an inclined plane; during operation, when the one end of bar frame downward sloping, insulating sleeve is with the bar frame together slope, the insulating sleeve centre gripping is not firm, very easily follow the landing between the grip block of two downward sloping, this technical scheme can solve above problems, concrete working method is as follows, when the one end of bar frame is inclined downwards around first pivot, produce the rotation between one end of downward sloping and the installation pole, the cooperation board of the round trip one end of downward sloping produces the contact extrusion with the arc butt plate, and make the round trip be close to the bar frame along the fourth connecting pin, and extrude the fourth spring, the round trip is close to the bar frame when, the round trip drives the round trip and removes along the grafting piece, thereby make the baffle of L type connecting rod bottom remove between two grip blocks, the one end of insulating sleeve who inclines downwards stops, prevent insulating sleeve from falling between the grip block of downward sloping, improve the security of oblique plug-in hoist and mount in-process, round trip one end through the round trip one end of L type connecting rod slides and inserts on the round trip, make the movable trip be close to the bar, the inside the round trip that drives the round trip when the movable trip is close to the bar, thereby the movable trip is not influenced by the round trip.
Compared with the prior art, the invention has the following beneficial effects:
1. the installation pole rotates around the first rotating shaft through the action of the rotary positioning mechanism, thereby adjust the angle of oblique plug-in type hoist and mount, when the installation pole rotates around the first rotating shaft, the rotation junction of installation pole and bar frame is rotatory, thereby make insulating sleeve produce the slope around first rotating shaft, when the in-process of adjusting, the corresponding upward slope of the other end when insulating sleeve's one end downward sloping, then need not separately operate the both ends, work efficiency has been improved, and when insulating sleeve inclines, insulating sleeve's central point put and first rotating shaft are coaxial, the constructor can be quick after hoist and mount finds insulating sleeve's central point put and install insulating sleeve, installation effectiveness has been improved, the link rotates the top of connecting at the installation pole through the effect of spacer pin, make the installation pole can rotate in the bottom of link, be favorable to constructor to carrying out the installation operation in different positions.
2. The second gear drives the first rotating shaft to reversely rotate through the meshing action of the second gear, the strip-shaped frame positioned in the rotating direction of the rotating ring is turned upwards under the rotating action of the first rotating shaft, so that the insulating sleeve is driven to turn around the first rotating shaft to incline, after the inclination angle of the insulating sleeve is adjusted, the rotating ring is loosened, the second spring is outwards stretched through the elastic action of the compressed second spring, the second connecting plate is extruded to be close to the first connecting plate, the rotating ring moves along with the second connecting plate, the corresponding plug pin on the rotating ring moves into the limiting ring, the adjusted angle is positioned, the first rotating shaft and the second rotating shaft are prevented from continuing to rotate, and the inclination angle of the insulating sleeve is ensured to be stable in the hoisting process.
3. The third pivot drives the tight pulley and rotates to make the rotation direction of tight pulley and second pivot opposite, the tight pulley is at pivoted in-process, through spacing protruding and spacing hole's cooperation, make the elastic webbing of bar frame tilt up one end remove along the one end of downward sloping, the straight line distance of elastic webbing tilt up one end and third pivot shortens, and the corresponding elastic webbing length between one end of reduction tilt up and the third pivot, thereby adapt to the distance change that bar frame slope produced, reduce the influence that the elastic webbing excessively pulls to hoist and mount.
4. The two limit rollers are positioned at the top of the elastic belt, and the first connecting block is stretched downwards under the elastic action of the third spring, so that the limit rollers press the elastic belt downwards, the elastic belt is always kept in a tight state, and the elastic belt is ensured to move along with the rotation of the fixed wheel.
5. The one end of circular pole drives L type connecting rod and removes along the grafting piece to make the baffle of L type connecting rod bottom remove between two grip blocks, block to the insulating sleeve's of downward sloping one end, prevent insulating sleeve from sliding between the grip block of downward sloping, improve the security of oblique plug-in hoist and mount in-process, slip the round pole through L type connecting rod one end and insert and establish on the strip that returns, when making the movable strip slide along the bar frame, the L type connecting rod of movable strip one end drives the circular pole and slides in the strip that returns inside, thereby make the removal of movable strip unaffected.
Drawings
FIG. 1 is a first schematic diagram of the present invention;
FIG. 2 is an enlarged schematic view of the structure A in FIG. 1 according to the present invention;
FIG. 3 is a second schematic diagram of the present invention;
FIG. 4 is an enlarged schematic view of the structure at B in FIG. 3 according to the present invention;
FIG. 5 is an enlarged schematic view of the structure of FIG. 4 at C in accordance with the present invention;
FIG. 6 is an enlarged schematic view of the structure at D in FIG. 3 according to the present invention;
FIG. 7 is a third schematic diagram of the present invention;
FIG. 8 is an exploded view of the mating structure of the rotating ring, plug pin and stop collar of the present invention;
FIG. 9 is a schematic view of the mating structure of the mounting bar, stop pin and hanger of the present invention (the mounting bar is partially cut away);
fig. 10 is a schematic view of the mating structure of the L-shaped connecting rod, the loop bar and the circular rod of the present invention.
In the figure: 1. a bar-shaped frame; 2. a movable bar; 3. a mounting rod; 4. a first rotating shaft; 5. a placement groove; 6. a limiting pin; 7. hanging rings; 8. a bidirectional screw; 9. a movable groove; 10. a connecting ring; 11. a knob; 12. a U-shaped frame; 13. a clamping block; 14. a first connecting pin; 15. a first spring; 16. extruding the bolt; 17. a first gear; 18. a second rotating shaft; 19. a second gear; 20. a first connection plate; 21. a second connecting pin; 22. a second connecting plate; 23. a second spring; 24. a rotating ring; 25. a plug pin; 26. a limiting ring; 27. a third rotating shaft; 28. a third gear; 29. a fourth gear; 30. a fixed wheel; 31. sleeving a rod; 32. an elastic belt; 33. a limiting hole; 34. a limit protrusion; 35. a first connection block; 36. a third connecting pin; 37. a second connection block; 38. a third spring; 39. a connecting shaft; 40. a limit roller; 41. a plug block; 42. an L-shaped connecting rod; 43. a baffle; 44. a strip in the shape of a loop; 45. a fourth connecting pin; 46. a fourth spring; 47. a circular rod; 48. an arc-shaped retaining plate; 49. and (5) matching the plates.
Detailed Description
The following description is presented to enable one of ordinary skill in the art to make and use the invention. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art.
The lifting device for the insulating sleeve of the power transformer comprises a strip-shaped frame 1, wherein two movable strips 2 are connected in the strip-shaped frame 1 in a sliding manner, sleeve clamping mechanisms are connected to the movable strips 2, opposite moving mechanisms are connected to the two movable strips 2, and the two movable strips 2 are mutually close to and far away from each other under the action of the opposite moving mechanisms;
one side of the strip-shaped frame 1 is provided with a mounting rod 3, a first rotating shaft 4 is rotationally connected below the mounting rod 3, one end of the first rotating shaft 4 is fixedly connected to one side of the strip-shaped frame 1, the other end of the first rotating shaft 4 is connected with a rotary positioning mechanism, and the mounting rod 3 rotates around the first rotating shaft 4 under the action of the rotary positioning mechanism and is positioned after rotating;
the mounting rod 3 is provided with a placing groove 5, a limiting pin 6 is axially limited in the placing groove 5 and rotated, and one end of the limiting pin 6 penetrates through the mounting rod 3 and extends to the upper side of the mounting rod 3 and is fixedly connected with a hanging ring 7; during operation, prior art is at the in-process of hoisting the insulating sleeve of transformer, usually adopt the length of adjusting both ends lifting rope to carry out oblique plug-in hoist and mount to insulating sleeve, but at the in-process of hoisting insulating sleeve, adjust both ends length respectively, cause the time that angle of adjustment consumes more, be unfavorable for improving work efficiency, and insulating sleeve is after angle of inclination has been adjusted, insulating sleeve is also can produce corresponding change in the central point on lifting device, be unfavorable for the constructor quick finding insulating sleeve's central point and install insulating sleeve, this technical scheme can solve above problem, specific operational mode is as follows: the position of two movable strips 2 is adjusted through the effect of moving mechanism in opposite directions, make the distance of the one end that two movable strips 2 deviate from mutually corresponding with insulating sleeve's length, be favorable to adjusting clamping position according to insulating sleeve's length, then through the effect of sleeve fixture, the both ends centre gripping of insulating sleeve is in corresponding movable strip 2 bottoms, hang the lifting end at the crane with link 7, in the in-process of hoist and mount, make installation pole 3 rotate around first pivot 4 through the effect of rotatory positioning mechanism, thereby adjust the angle of oblique plug-in hoist and mount, when installation pole 3 rotates around first pivot 4, the rotation junction of installation pole 3 and bar frame 1 is rotatory, thereby make insulating sleeve produce the slope around first pivot 4, when adjusting the in-process, insulating sleeve's one end downward sloping, the corresponding upward sloping of other end, then do not need separate the operation to both ends respectively, work efficiency is improved, and when insulating sleeve inclines, insulating sleeve's central point and first pivot 4 are coaxial, the center position of insulating sleeve and the hoisting of post constructor can be quick find insulating sleeve and install efficiency and install the insulating sleeve, installation pole 3 is improved, installation pole 7 has improved and install the effect 7 and can not make the top of installing at the same position of rotation of installation pole 3 through the effect of the connecting pin 7 at the top of the installation pole 3.
As a further embodiment of the invention, the opposite moving mechanism comprises a bidirectional screw rod 8, two movable grooves 9 and two connecting rings 10, wherein the two movable grooves 9 are respectively arranged at two ends of the top of the bar-shaped frame 1, the bidirectional screw rod 8 is rotationally connected to the top of the bar-shaped frame 1, the two connecting rings 10 are respectively and fixedly connected to the tops of the adjacent movable bars 2, one ends of the connecting rings 10 extend to the upper part of the bar-shaped frame 1 from the adjacent movable grooves 9, the two connecting rings 10 are respectively and fixedly connected to the bidirectional screw rod 8 in a threaded manner, and the two ends of the bidirectional screw rod 8 are respectively and fixedly connected with a knob 11; during operation, through the knob 11 of rotating bi-directional screw rod 8 one end, make bi-directional screw rod 8 rotate at the rotation junction at bar frame 1 top to through go-between 10 and bi-directional screw rod 8's threaded connection, thereby make two go-between 10 be close to each other and keep away from each other along adjacent movable groove 9, drive two movable strip 2 and be close to each other and keep away from each other, thereby adjust the distance between two movable strip 2, be favorable to adjusting clamping position according to insulating sleeve's length.
As a further embodiment of the invention, the sleeve clamping mechanism comprises two U-shaped frames 12, the two U-shaped frames 12 are respectively and fixedly connected to the bottoms of the adjacent movable strips 2, two clamping blocks 13 are placed in the U-shaped frames 12, two first connecting pins 14 are fixedly connected to one sides of the clamping blocks 13, which are opposite, the first connecting pins 14 are slidably inserted into the adjacent U-shaped frames 12, first springs 15 are sleeved on the first connecting pins 14, two ends of each first spring 15 are respectively and fixedly connected to one ends of the adjacent U-shaped frames 12 and the first connecting pins 14, two sides of each U-shaped frame 12 are respectively and fixedly connected with extrusion bolts 16 in a threaded manner, one ends of the extrusion bolts 16 penetrate through the side surfaces of the U-shaped frames 12 and extend into the U-shaped frames 12, and one ends of the extrusion bolts 16 are contacted with one sides of the adjacent clamping blocks 13; during operation, through placing the both ends of insulating sleeve respectively inside adjacent U type frame 12, then rotate the extrusion bolt 16 of one side, make the one end of extrusion bolt 16 through screw thread rotation to the inside removal of U type frame 12, the one end extrusion grip block 13 of extrusion bolt 16, make the first connecting pin 14 of grip block 13 one side remove along slip grafting department, and extrude first spring 15 and produce compression deformation, thereby make the opposite side laminating of grip block 13 on insulating sleeve's cambered surface, rotate the opposite side extrusion bolt 16 again, make another grip block 13 remove, carry out the centre gripping through grip block 13 to the cambered surface at insulating sleeve both ends, thereby with insulating sleeve centre gripping spacing in the inside of U type frame 12, reverse rotation extrusion bolt 16, grip block 13 is losing the extrusion of extrusion bolt 16 one end after the elastic action of first spring 15 makes two grip blocks 13 keep away from each other, thereby release the centre gripping to insulating sleeve.
As a further embodiment of the present invention, the rotary positioning mechanism includes a first gear 17 and a second rotating shaft 18, the first gear 17 is fixedly connected to one end of the first rotating shaft 4, the second rotating shaft 18 is rotatably connected to one end of the first rotating shaft 4, one end of the second rotating shaft 18 penetrates through the mounting rod 3 and extends to the outside of the mounting rod 3, then is fixedly connected with a second gear 19, the second gear 19 is meshed with the first gear 17, the end surface of one end of the second rotating shaft 18 is fixedly connected with a first connecting plate 20, one side of the first connecting plate 20 is fixedly connected with two second connecting pins 21, the second connecting pins 21 are jointly slidably connected with a second connecting plate 22, a second spring 23 is sleeved on the second connecting pins 21, two ends of the second spring 23 are respectively fixedly connected to the second connecting plate 22 and one end of the adjacent second connecting pin 21, a rotating ring 24 is fixedly connected to the second connecting plate 22, one side of the rotating ring 24 is fixedly connected with a plurality of plug pins 25 in a circumferential array, two sides of the mounting rod 3 are fixedly connected with a limiting ring 26, and the adjacent plug pins 25 are located inside the limiting ring 26; when the insulating sleeve is in operation, the rotating ring 24 is pulled to one side, the rotating ring 24 drives the second connecting plate 22 to move on the second connecting pin 21, the second spring 23 is extruded to generate compression deformation, in the moving process of the rotating ring 24, the adjacent inserting pins 25 are separated from the limiting rings 26, so that the rotating ring 24 can rotate, then the rotating ring 24 is rotated, the rotating ring 24 drives the second connecting plate 22 to rotate, the second connecting plate 22 is slidably inserted with the two inserting pins 25 to drive the two inserting pins 25 to rotate, the first connecting plate 20 is driven to rotate, the first connecting plate 20 drives the second rotating shaft 18 to rotate, so that the second gear 19 rotates, the second gear 19 reversely rotates through the meshing action of the second gear 17, the first rotating shaft 4 is driven to reversely rotate, the strip-shaped frame 1 in the rotating direction of the rotating ring 24 is upwards overturned under the rotating action of the first rotating shaft 4, so that the insulating sleeve is driven to overturn and incline around the first rotating shaft 4, after the inclined angle of the insulating sleeve is adjusted, the rotating ring 24 is released, the compressed first spring 23 elastically acts to enable the second spring 23 to outwards, the second connecting plate 22 is driven to rotate along with the sliding of the two inserting pins 25, the second connecting plate 20 is driven to move along with the rotating shaft 24, the corresponding to the rotating shaft 24 is kept to rotate along with the first rotating shaft 24, and the rotating angle is stably adjusted, and the rotating shaft is kept to move along with the rotating shaft 24, and the rotating direction is kept along with the rotating direction of the rotating connecting plate is stable, and the rotating along with the rotating direction, and the rotating direction of the rotating sleeve is kept along with the rotating, and the rotating direction is kept along with the rotating direction, and is stable.
As a further embodiment of the invention, a third rotating shaft 27 is rotatably connected in the placing groove 5, one end of the third rotating shaft 27 penetrates through the mounting rod 3 and extends to the upper part of the strip-shaped frame 1, a third gear 28 is fixedly connected to the third rotating shaft 27, the third gear 28 is positioned in the placing groove 5, a fourth gear 29 is fixedly connected to one end of the second rotating shaft 18 positioned in the placing groove 5, the third gear 28 is meshed with the fourth gear 29, one end of the third rotating shaft 27 is fixedly connected with a fixed wheel 30, two ends of the top of the strip-shaped frame 1 are fixedly connected with sleeved rods 31, an elastic belt 32 is placed between the two sleeved rods 31, two ends of the elastic belt 32 are bound on the adjacent sleeved rods 31, a plurality of limiting holes 33 are formed in the surface of the elastic belt 32, a plurality of limiting protrusions 34 are fixedly connected to the surface of the fixed wheel 30 in a circumferential array, and the limiting protrusions 34 at the top are positioned in the adjacent limiting holes 33; during operation, connect through first pivot 4 between installation pole 3 and the bar frame 1, when carrying out the in-process of hoist and mount to insulating sleeve, first pivot 4 fracture, bar frame 1 and insulating sleeve drop from the eminence and can cause insulating sleeve to the personnel of injuring the bottom easily, this technical scheme can solve above problem, establish pole 31 through the both ends cover with elastic webbing 32 on adjacent cover, and make elastic webbing 32 be located the top of tight pulley 30, when first pivot 4 fracture, drag elastic webbing 32 through tight pulley 30, the both ends of elastic webbing 32 draw bar frame 1, prevent to place bar frame 1 and insulating sleeve's direct whereabouts, guarantee personnel and insulating sleeve's safety, when the bar frame 1 of second pivot 18 rotation direction one end upwards inclines, fourth gear 29 in the standing groove 5 is driven to the second pivot 18, the meshing effect through with third gear 28, make third gear 28 reverse rotation, make third gear 27 reverse rotation, third gear 27 drive the tight pulley 30 and make elastic webbing 30 draw the elastic webbing 32 through the tight pulley 1, thereby the influence of the slope of the corresponding elastic webbing 30 and the first pivot of the first pivot 18 and the one end of slope direction of rotation of second pivot 18, the slope of the corresponding elastic webbing 32 is reduced, the slope of the first pivot 32 is moved along the straight line length of the opposite pivot 32, the slope of the corresponding pivot of the upward direction of the elastic webbing 32 is reduced, the slope of the elastic webbing 32 is moved along the tight pulley is realized, the slope of the opposite pivot 32, the slope of the corresponding pivot of the elastic webbing is moved between the opposite pivot 32, and the opposite end of the slope of the top of the elastic webbing is moved, and the end of the tight pulley is moved.
As a further embodiment of the invention, the two sides of the mounting rod 3 are both connected with a first connecting block 35 in a sliding way, the top of the first connecting block 35 is fixedly connected with a third connecting pin 36, a second connecting block 37 is inserted on the third connecting pin 36 in a sliding way, the second connecting block 37 is fixedly connected to the side face of the mounting rod 3, a third spring 38 is sleeved on the third connecting pin 36, two ends of the third spring 38 are respectively fixedly connected to the adjacent first connecting block 35 and the second connecting block 37, one side of the first connecting block 35 is rotationally connected with a connecting shaft 39, one end of the connecting shaft 39 is fixedly connected with a limiting roller 40, and the limiting roller 40 is positioned at the top of the elastic belt 32; during operation, the two limit rollers 40 are located at the top of the elastic belt 32, and the first connecting block 35 is stretched downwards under the elastic action of the third spring 38, so that the limit rollers 40 press the elastic belt 32 downwards, the elastic belt 32 is always kept in a tight state, and the elastic belt 32 can move along with the rotation of the fixed wheel 30.
As a further embodiment of the invention, the opposite ends of the two movable bars 2 are fixedly connected with the inserting blocks 41, the L-shaped connecting bars 42 are slidably inserted on the inserting blocks 41, the bottom ends of the L-shaped connecting bars 42 are fixedly connected with the baffle plates 43, the baffle plates 43 are positioned at one side of the clamping blocks 13, the two ends of one side of the bar frame 1 are respectively provided with the rectangular bars 44, the L-shaped connecting bars 42 are positioned at one end of the rectangular bars 44, a plurality of fourth connecting pins 45 are slidably inserted on the rectangular bars 44, one ends of the fourth connecting pins 45 are respectively fixedly connected with one side of the bar frame 1, a fourth spring 46 is sleeved on the fourth connecting pins 45, two ends of the fourth spring 46 are respectively fixedly connected with the bar frame 1 and the adjacent rectangular bars 44, the inner parts of the rectangular bars 44 are slidably connected with round bars 47, one ends of the round bars 47 penetrate through the rectangular bars 44 and extend to one side of the L-shaped connecting bars 42, the bottoms of the mounting bars 3 are fixedly connected with arc-shaped retaining plates 48, one ends of the adjacent ends of the two rectangular bars 44 are respectively fixedly connected with a matched plate 49 and one side of the adjacent arc-shaped retaining plates 48, and the adjacent sides of the matched plate 49 are respectively provided with the inclined surfaces of the adjacent arc-shaped retaining plates 48; when one end of the bar frame 1 is inclined downwards in operation, the insulating sleeve is inclined along with the bar frame 1, and if the insulating sleeve is not firmly clamped, the insulating sleeve is very easy to slide off from between the two clamping blocks 13 inclined downwards, the technical scheme can solve the problems, and the concrete working mode is that when one end of the bar frame 1 is inclined downwards around the first rotating shaft 4, rotation is generated between the inclined downwards end and the mounting rod 3, the matching plate 49 at one end of the downward inclined return bar 44 is in contact extrusion with the arc-shaped resisting plate 48 in the process of inclination, the return bar 44 is close to the bar frame 1 along the fourth connecting pin 45, the fourth spring 46 is extruded, and when the return bar 44 is close to the bar frame 1, the circular rod 47 is driven to move by the loop-shaped rod 44, one end of the circular rod 47 drives the L-shaped connecting rod 42 to move along the inserting block 41, so that the baffle plate 43 at the bottom of the L-shaped connecting rod 42 moves between the two clamping blocks 13, one end of the downward inclined insulating sleeve is blocked, the insulating sleeve is prevented from sliding down from the clamping blocks 13, the safety in the oblique inserting type hoisting process is improved, the circular rod 47 at one end of the L-shaped connecting rod 42 is slidably inserted on the loop-shaped rod 44, and when the movable strip 2 slides along the strip-shaped frame 1, the L-shaped connecting rod 42 at one end of the movable strip 2 drives the circular rod 47 to slide inside the loop-shaped rod 44, so that the movement of the movable strip 2 is not affected.
The working principle of the invention is as follows:
the position of two movable strips 2 is adjusted through the effect of moving mechanism in opposite directions, make the distance of the one end that two movable strips 2 deviate from mutually corresponding with insulating sleeve's length, be favorable to adjusting clamping position according to insulating sleeve's length, then through the effect of sleeve fixture, the both ends centre gripping of insulating sleeve is in corresponding movable strip 2 bottoms, hang the lifting end at the crane with link 7, in the in-process of hoist and mount, make installation pole 3 rotate around first pivot 4 through the effect of rotatory positioning mechanism, thereby adjust the angle of oblique plug-in hoist and mount, when installation pole 3 rotates around first pivot 4, the rotation junction of installation pole 3 and bar frame 1 is rotatory, thereby make insulating sleeve produce the slope around first pivot 4, when adjusting the in-process, insulating sleeve's one end downward sloping, the corresponding upward sloping of other end, then do not need separate the operation to both ends respectively, work efficiency is improved, and when insulating sleeve inclines, insulating sleeve's central point and first pivot 4 are coaxial, the center position of insulating sleeve and the hoisting of post constructor can be quick find insulating sleeve and install efficiency and install the insulating sleeve, installation pole 3 is improved, installation pole 7 has improved and install the effect 7 and can not make the top of installing at the same position of rotation of installation pole 3 through the effect of the connecting pin 7 at the top of the installation pole 3.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the foregoing embodiments, but rather, the foregoing embodiments and description illustrate the principles of the invention, and that various changes and modifications may be effected therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.
Claims (7)
1. The utility model provides a power transformer insulating sleeve hoist device, includes bar frame (1), its characterized in that, the inside sliding connection of bar frame (1) has two movable strips (2), be connected with sleeve pipe fixture on movable strip (2), be connected with opposite direction moving mechanism on two movable strip (2), make two movable strips (2) be close to each other and keep away from through the effect of opposite direction moving mechanism;
one side of the strip-shaped frame (1) is provided with a mounting rod (3), a first rotating shaft (4) is rotationally connected below the mounting rod (3), one end of the first rotating shaft (4) is fixedly connected to one side of the strip-shaped frame (1), the other end of the first rotating shaft (4) is connected with a rotary positioning mechanism, and the mounting rod (3) rotates around the first rotating shaft (4) under the action of the rotary positioning mechanism and is positioned after rotation;
The mounting rod (3) is provided with a placing groove (5), the inner axial limiting rotation of the placing groove (5) is provided with a limiting pin (6), and one end of the limiting pin (6) penetrates through the mounting rod (3) and extends to the upper side of the mounting rod (3) to be fixedly connected with a hanging ring (7).
2. The lifting device for the insulating sleeve of the power transformer according to claim 1, wherein the opposite moving mechanism comprises a bidirectional screw rod (8), two movable grooves (9) and two connecting rings (10), the two movable grooves (9) are respectively formed in two ends of the top of the strip-shaped frame (1), the bidirectional screw rod (8) is rotationally connected to the top of the strip-shaped frame (1), the two connecting rings (10) are respectively and fixedly connected to the tops of the adjacent movable strips (2), one ends of the connecting rings (10) extend to the upper portion of the strip-shaped frame (1) from the adjacent movable grooves (9), the two connecting rings (10) are in threaded connection with the bidirectional screw rod (8), and two ends of the bidirectional screw rod (8) are fixedly connected with knobs (11).
3. The hoisting device for the insulating sleeve of the power transformer according to claim 2, wherein the sleeve clamping mechanism comprises two U-shaped frames (12), the two U-shaped frames (12) are respectively and fixedly connected to the bottoms of the adjacent movable strips (2), two clamping blocks (13) are placed in the U-shaped frames (12), two first connecting pins (14) are fixedly connected to one sides, away from each other, of the clamping blocks (13), the first connecting pins (14) are slidably inserted into the adjacent U-shaped frames (12), first springs (15) are respectively sleeved on the first connecting pins (14), two ends of each first spring (15) are respectively and fixedly connected to the adjacent U-shaped frames (12) and one end of each first connecting pin (14), two sides of each U-shaped frame (12) are respectively and fixedly connected with a pressing bolt (16) in a threaded mode, one end of each pressing bolt (16) penetrates through the side face of each U-shaped frame (12) and extends to one side, contacting the adjacent U-shaped frames (12), of each pressing bolt (16) is in contact with one end of each U-shaped frame (12).
4. The lifting device for the insulating sleeve of the power transformer according to claim 1, wherein the rotary positioning mechanism comprises a first gear (17) and a second rotating shaft (18), the first gear (17) is fixedly connected to one end of the first rotating shaft (4), the second rotating shaft (18) is rotatably connected to the inside of the placing groove (5), one end of the second rotating shaft (18) penetrates through the mounting rod (3) and extends to the outside of the mounting rod (3) and is fixedly connected with a second gear (19), the second gear (19) is meshed with the first gear (17), a first connecting plate (20) is fixedly connected to the end face of one end of the second rotating shaft (18), one side of the first connecting plate (20) is fixedly connected with two second connecting pins (21), the second connecting pins (21) are slidably connected with a second connecting plate (22) in a sliding manner, a second spring (23) is sleeved on the second connecting pin (21), the second spring (23) is fixedly connected to one end of the second connecting plate (24) and one end of the second connecting plate (24) is fixedly connected with one end of the connecting plate (24), both sides of the mounting rod (3) are fixedly connected with limiting rings (26), and adjacent plug pins (25) are positioned in the limiting rings (26).
5. The hoisting device for the power transformer insulating sleeve according to claim 4, wherein a third rotating shaft (27) is connected to the inside of the placing groove (5) in a rotating manner, one end of the third rotating shaft (27) penetrates through the mounting rod (3) and extends to the upper portion of the strip-shaped frame (1), a third gear (28) is fixedly connected to the third rotating shaft (27), the third gear (28) is located in the placing groove (5), a fourth gear (29) is fixedly connected to one end of the second rotating shaft (18) located in the placing groove (5), the third gear (28) is meshed with the fourth gear (29), a fixed wheel (30) is fixedly connected to one end of the third rotating shaft (27), two ends of the top of the strip-shaped frame (1) are fixedly connected with sleeved rods (31), elastic bands (32) are placed between the two sleeved rods (31), two ends of each elastic band (32) are bound on adjacent sleeved rods (31), a plurality of elastic band limiting holes (34) are formed in the adjacent surfaces of the fixed wheels (33), and the limiting holes (33) are formed in the adjacent surfaces of the limiting plates.
6. The hoisting device for the insulating sleeve of the power transformer according to claim 5, wherein the two sides of the mounting rod (3) are both connected with a first connecting block (35) in a sliding manner, a third connecting pin (36) is fixedly connected to the top of the first connecting block (35), a second connecting block (37) is inserted on the third connecting pin (36) in a sliding manner, the second connecting block (37) is fixedly connected to the side face of the mounting rod (3), a third spring (38) is sleeved on the third connecting pin (36), two ends of the third spring (38) are respectively and fixedly connected to the adjacent first connecting block (35) and second connecting block (37), a connecting shaft (39) is rotationally connected to one side of the first connecting block (35), a limit roller (40) is fixedly connected to one end of the connecting shaft (39), and the limit roller (40) is located at the top of the elastic belt (32).
7. The lifting device for the insulating sleeve of the power transformer according to claim 3, wherein one ends, deviating from the movable strips (2), of the two movable strips are fixedly connected with plug blocks (41), L-shaped connecting rods (42) are slidably inserted on the plug blocks (41), baffle plates (43) are fixedly connected with the bottom ends of the L-shaped connecting rods (42), the baffle plates (43) are positioned on one side of the clamping blocks (13), two ends on one side of the strip-shaped frame (1) are respectively provided with a square strip (44), the L-shaped connecting rods (42) are positioned on one end of the square strip (44), a plurality of fourth connecting pins (45) are slidably inserted on the square strip (44), one end of the fourth connecting pin (45) is fixedly connected to one side of the strip-shaped frame (1), a fourth spring (46) is sleeved on the fourth connecting pin (45), two ends of the fourth spring (46) are fixedly connected to the strip-shaped frame (1) and the adjacent strip-shaped strips (44) respectively, a circular rod (47) is slidably connected to the inside of the strip-shaped strips (44), one end of the circular rod (47) penetrates through the strip-shaped strips (44) and extends to the outside of the strip-shaped strips (44) to be fixedly connected to one side of the L-shaped connecting rod (42), an arc-shaped retaining plate (48) is fixedly connected to the bottom of the mounting rod (3), two adjacent one ends of the square strip (44) are fixedly connected with a matching plate (49), and one side of the arc-shaped abutting plate (48) adjacent to the matching plate (49) is provided with a guide inclined plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310975207.XA CN117003110A (en) | 2023-08-04 | 2023-08-04 | Power transformer insulating sleeve lifting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310975207.XA CN117003110A (en) | 2023-08-04 | 2023-08-04 | Power transformer insulating sleeve lifting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117003110A true CN117003110A (en) | 2023-11-07 |
Family
ID=88570593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310975207.XA Withdrawn CN117003110A (en) | 2023-08-04 | 2023-08-04 | Power transformer insulating sleeve lifting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117003110A (en) |
-
2023
- 2023-08-04 CN CN202310975207.XA patent/CN117003110A/en not_active Withdrawn
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Legal Events
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20231107 |
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| WW01 | Invention patent application withdrawn after publication |