CN212450250U - Special lifting appliance for outdoor construction of transformer substation - Google Patents
Special lifting appliance for outdoor construction of transformer substation Download PDFInfo
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- CN212450250U CN212450250U CN202020837785.9U CN202020837785U CN212450250U CN 212450250 U CN212450250 U CN 212450250U CN 202020837785 U CN202020837785 U CN 202020837785U CN 212450250 U CN212450250 U CN 212450250U
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Abstract
The utility model discloses a special lifting appliance for outdoor construction of a transformer substation, which comprises a bearing steel plate, an iron ring, a steel wire rope and a hook, wherein the iron ring is positioned above the center of the bearing steel plate, the iron ring is connected with the bearing steel plate through the steel wire rope, the bearing steel plate is provided with at least six second hanging holes, two bow shackles are arranged in the two second hanging holes, the bottom of each bow shackle is provided with the steel wire rope, and the end part of the steel wire rope is provided with the hook; the bearing steel plate is provided with a groove, a rectangular through hole and a positioning hole, two portal frames are inserted into the rectangular through hole, each portal frame is provided with a hook plate, and the outer side face of each hook plate is provided with a pressing rolling assembly. The utility model has the advantages that the bearing steel plate is arranged, the function of dispersing the distance of the steel wire rope is realized, and the friction between the hoisting tool and the hoisting body is reduced; the hook plate is arranged, so that the stability of integral adjustment is ensured; through being provided with at the hook plate lateral surface and pressing the roll subassembly, the hoist and mount body of being convenient for is at the local accurate location on ground, convenient to use, easy operation, and the security performance is high, easily promotes.
Description
The technical field is as follows:
the utility model relates to a GIS of different voltage classes and weight hoists specialized tool, in particular to outdoor construction specialized lifting device of transformer substation, construction engineering auxiliary facilities technical field.
Background art:
with the development of society, as GIS equipment has the advantages of small floor area, small occupied space, high operation reliability, small maintenance workload, long overhaul period, no influence of external environmental conditions, no electrostatic induction and corona interference, low noise level, good anti-seismic performance, strong adaptability and the like, more and more newly built transformer substations adopt the GIS equipment, and no special hoisting tool is arranged in the GIS in place and in the construction process; the GIS equipment is used as main electrical equipment of the transformer substation, the safety of the installation process is crucial, the installation work of the GIS equipment of the transformer substation is well done, and the GIS equipment has significance for the stability and the effectiveness of a power system; at present, GIS hoist and mount generally adopt traditional suspender and the direct mode of lifting by crane of snap ring cooperation, can cause the extrusion of different degrees to GIS ware body, the damage, bring the potential safety hazard for normal operating, and because GIS ware whole volume is great, the whole condition of rocking can appear in the hoist and mount, when the hoist and mount whereabouts is fast to ground, often need four at least staff to hold the GIS ware, make a round trip to promote in the top of required whereabouts position, carry out the location of local position, it is very troublesome to adjust, and waste time and energy, and operate carelessly slightly, can cause the injury to the staff's person.
The utility model has the following contents:
the utility model discloses the technical problem that will solve is: overcome prior art's not enough, provide a transformer substation's outdoor construction special lifting device, reduce contact and friction between hoist and the hoist and mount body, improve equipment's security, the whereabouts position of the accurate hoist and mount body of ability simultaneously, practical convenient, easy operation, the security performance is high.
The utility model discloses a technical scheme who solves technical problem and take is:
a lifting appliance special for outdoor construction of a transformer substation comprises a bearing steel plate, iron rings, steel wire ropes and hooks, wherein the iron rings are positioned above the center of the bearing steel plate, first hanging holes are symmetrically dug in two sides of the middle position of the upper portion of the bearing steel plate, hanging rings are respectively arranged in each first hanging hole in a penetrating mode, and each hanging ring is connected with the iron ring through the steel wire rope; at least six second hanging holes are dug in the bearing steel plate below the first hanging holes, the distance between every two second hanging holes is the same, two bow shackles are arranged in the two second hanging holes respectively, two steel wire ropes are connected in the two bow shackles respectively, and hooks are connected to the bottom ends of the steel wire ropes; a groove is dug in the bearing steel plate below the second hanging hole, a rectangular through hole is formed in the bearing steel plate below the groove, and at least ten positioning holes are formed in the bearing steel plate below the rectangular through hole; two clamping assemblies are inserted into the rectangular through hole, and each clamping assembly is connected with the rectangular through hole in a sliding mode.
Each clamping assembly consists of a portal frame, upper vertical plates, a bearing threaded rod, a hook plate and an inner side positioning plate, the upper vertical plates are arranged on two sides of the middle position of a beam at the top end of the portal frame respectively, a clamping block is arranged at the position, corresponding to a groove, of the inner side of each upper vertical plate, and each clamping block is connected with the grooves on two side surfaces of a bearing steel plate in a sliding mode; lower vertical plates are symmetrically arranged on two sides of the middle position of the bottom surface of the cross beam at the top of the portal frame, the position, corresponding to the positioning hole, of each lower vertical plate is provided with the same hole in an excavating mode, the position, corresponding to the hole, of the outer side surface of each lower vertical plate is provided with a first guide pipe with internal threads, and a matched first screw rod is inserted into each first guide pipe in a rotating mode; the top beam of the portal frame is inserted into the rectangular through hole; at least five through holes are dug in the side surfaces of the two vertical rods of the portal frame respectively, and the through holes are distributed in a vertical shape; a bearing threaded rod penetrates through the through holes in the two vertical rods of the portal frame, and two ends of the bearing threaded rod are fixed with the two vertical rods of the portal frame through nuts; each bearing threaded rod positioned between the two vertical rods of the portal frame is respectively connected with a hook plate, the bearing threaded rod penetrates through the top of the bearing threaded rod, and the top of each hook plate is movably sleeved on the bearing threaded rod; the hook plates are distributed in an L shape, inner side positioning plates are vertically arranged in the middle of the inner side surfaces of the hook plates, second guide pipes with two internal threads are arranged on the inner side positioning plates, through holes are dug in the inner side positioning plates corresponding to the second guide pipes, second threaded rods are inserted in the second guide pipes in a rotating mode, and end part connecting blocks are arranged at the bottoms of the second threaded rods; rectangular grooves are respectively dug in the middle lower part of the outer side face of each hook plate, and pressing rolling assemblies are respectively arranged in each rectangular groove.
Each pressing rolling assembly is composed of a positioning vertical rod, an external pressing plate, baffles, wheels and a spring, two positioning vertical rods are arranged in each rectangular groove, one end of each external pressing plate is located in each rectangular groove, each positioning vertical rod is inserted into the corresponding external pressing plate in a penetrating mode, three baffles are vertically arranged on the bottom surface of each external pressing plate located outside each rectangular groove, and the distance between every two adjacent baffles is the same; the three baffle plates divide the lower part of the external pressing plate into two spaces, and each space is connected with a wheel through a connecting shaft; the outside of every location montant of outside pressing plate top is provided with the spring respectively, the bottom difference position of every spring is in the same place with outside pressing plate upper surface fixed connection.
The second hanging holes are distributed in a horizontal row shape, and the two bow shackles are symmetrically arranged in the second hanging holes at two ends of the bearing steel plate respectively.
The positioning holes are distributed in a horizontal row shape, and the distance between every two adjacent positioning holes is the same.
The positions of the two lower vertical plates correspond to the positions of the two upper vertical plates up and down, the cross beam at the top of the portal frame is positioned in the rectangular through hole, and the cross beam at the top of the portal frame can move left and right in the rectangular through hole; the top surface in the rectangular through hole is located at a position between two upper vertical plates, and the bottom surface in the rectangular through hole is located at a position between two lower vertical plates.
The utility model discloses an actively beneficial effect is:
1. the utility model discloses a set up wire rope between bearing steel plate and hoop, set up six at least second hanging holes on bearing steel plate, be provided with bow-shaped shackle respectively in two of them second hanging holes, be connected with the hook in the bottom of every bow-shaped shackle, like this when lifting by crane the object, bearing steel plate has played the effect of dispersing the wire rope distance, makes wire rope and lifting device keep a certain distance, avoids appearing the condition that rubs and damages between hoist and the lifting device; when in use, the position of the bow shackle can be adjusted according to the width of a hoisting object, and the device is convenient to use and simple to operate.
2. The clamping assembly is arranged in the rectangular through hole, and can freely move in the rectangular through hole according to the hoisting condition; through setting up two risers in portal frame back timber ground, set up first stand pipe and first screw rod on the riser, the rotatory locating hole of establishing on the bearing steel sheet of inserting of accessible first screw rod is in the same place lower part riser and bearing steel sheet are fixed, can fix a position the portal frame fast.
3. The utility model discloses a set up the perforation on two montants of portal frame, be equipped with the bearing threaded rod in the perforation interpolation, be provided with the hook plate in the intermediate position of bearing threaded rod, the hook plate is L form and distributes, and during the use, the hook plate low side is inserted and is established in GIS base recess all around, fixes a position through second stand pipe and second screw rod correspondence GIS base upper plate face; through inserting the bearing threaded rod and establishing in the perforation of co-altitude not, adjust the height of hook plate, through inserting hook plate bottom surface tip and establishing in GIS base recess all around, guarantee whole hoist and mount's stability during hoist and mount.
4. The utility model discloses a set up the rectangle recess on the hook plate lateral surface, set up in the rectangle recess and press the roll subassembly, when hoist and mount article bottom is close to the ground, the wheel can at first contact ground, and the staff can stop earlier at this moment and hoist and mount the object and continue to descend, then the outside is stepped on according to the clamp plate to the foot, makes adjustment hoist and mount article roll to required position on ground with the wheel, then continues to carry out the whereabouts of hoist and mount object, can carry out local removal, accurate positioning to the hoist and mount object through the wheel fast.
Description of the drawings:
fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the connection structure of the portal frame and the hook plate of the present invention;
fig. 3 is a schematic view of a partial structure of the outer side surface pressing rolling component of the hook plate of the present invention;
fig. 4 is a schematic structural view of the rolling assembly according to the present invention.
The specific implementation mode is as follows:
the invention will be further explained and explained with reference to the drawings, in which:
referring to fig. 1-4, the hanger special for outdoor construction of the transformer substation comprises a bearing steel plate 1, iron rings 2, steel wire ropes 5 and hooks 8, wherein the iron rings 2 are positioned above the center of the bearing steel plate 1, first hanging holes 3 are symmetrically dug in two sides of the middle position of the upper part of the bearing steel plate 1, hanging rings 6 are respectively arranged in each first hanging hole 3 in a penetrating manner, and each hanging ring 6 is connected with the iron ring 2 through the steel wire rope 5; at least six second hanging holes 4 are dug in the bearing steel plate 1 below the first hanging hole 3, the distance between every two second hanging holes 4 is the same, two bow shackles 7 are respectively arranged in the two second hanging holes 4, two steel wire ropes 5 are respectively connected in each bow shackles 7, and the bottom ends of the steel wire ropes 5 are connected with hooks 8; a groove 9 is dug in the bearing steel plate 1 below the second hanging hole 4, a rectangular through hole 10 is formed in the bearing steel plate 1 below the groove 9, and at least ten positioning holes 11 are formed in the bearing steel plate 1 below the rectangular through hole 10; two clamping assemblies are inserted into the rectangular through hole 10, and each clamping assembly is connected with the rectangular through hole 10 in a sliding mode.
Each clamping assembly consists of a portal frame 12, an upper vertical plate 12-1, a bearing threaded rod 16, a hook plate 13 and an inner side positioning plate 14, wherein the upper vertical plate 12-1 is arranged on each of two sides of the middle position of a beam at the top end of the portal frame 12, a clamping block 12-2 is arranged on the inner side of each upper vertical plate 12-1 corresponding to the position of the groove 9, and each clamping block 12-2 is respectively connected with the grooves 9 on the two side surfaces of the bearing steel plate 1 in a sliding manner; lower vertical plates 12-3 are symmetrically arranged on two sides of the middle position of the bottom surface of a cross beam on the top of a portal frame 12, the position, corresponding to a positioning hole 11, of each lower vertical plate 12-3 is dug to be provided with the same hole, the position, corresponding to the hole, of the outer side surface of each lower vertical plate 12-3 is provided with a first guide pipe 12-4 with internal threads, and a matched first screw 12-5 is rotatably inserted in each first guide pipe 12-4 respectively; the top beam of the portal frame 12 is inserted in the rectangular through hole 10; at least five through holes 12-6 are respectively dug on the side surfaces of two vertical rods of the portal frame 12, and the through holes 12-6 are vertically distributed; a bearing threaded rod 16 penetrates through the through hole 12-6 on the two vertical rods of the portal frame, and two ends of the bearing threaded rod 16 are fixed with the two vertical rods of the portal frame through nuts 16-1; each bearing threaded rod 16 positioned between two vertical rods of the portal frame is respectively connected with a hook plate 13, the bearing threaded rod 16 penetrates through the top of the bearing threaded rod 16, and the top of each hook plate 13 is movably sleeved on the bearing threaded rod 16; the hook plates 13 are distributed in an L shape, the middle part of the inner side surface of each hook plate 13 is vertically provided with an inner side positioning plate 14, the inner side positioning plate 14 is provided with second guide pipes 15 with two internal threads, a through hole is dug on the inner side positioning plate 14 corresponding to each second guide pipe 15, a second threaded rod 17 is rotatably inserted in each second guide pipe 15, and the bottom of each second threaded rod 17 is provided with an end part connecting block 17-1; rectangular grooves 13-1 are respectively dug in the middle lower part of the outer side surface of each hook plate 13, and pressing rolling components are respectively arranged in each rectangular groove 13-1.
Each pressing rolling assembly is composed of a positioning vertical rod 21, an external pressing plate 18, baffles 19, wheels 20 and springs 22, two positioning vertical rods 21 are arranged in each rectangular groove 13-1, one end of each external pressing plate 18 is located in each rectangular groove 13-1, each positioning vertical rod 21 is inserted into the corresponding external pressing plate 18 in a penetrating mode, three baffles 19 are vertically arranged on the bottom surface of each external pressing plate 18 located outside each rectangular groove 13-1, and the distance between every two adjacent baffles 19 is the same; the three baffle plates 19 divide the lower part of the external pressing plate 18 into two spaces, and a wheel 20 is connected in each space through a connecting shaft 19-1; the outer part of each positioning vertical rod 21 above the outer pressing plate 18 is respectively provided with a spring 22, and the bottom of each spring 22 is fixedly connected with the upper surface of the outer pressing plate 18.
The second hanging holes 4 are distributed in a horizontal row, and the two bow shackles 7 are symmetrically arranged in the second hanging holes 4 at the two ends of the bearing steel plate 1 respectively.
The positioning holes 11 are distributed in a horizontal row, and the distance between adjacent positioning holes 11 is the same.
The positions of the two lower vertical plates 12-3 correspond to the positions of the two upper vertical plates 12-1 up and down, a cross beam at the top of the portal frame 12 is positioned in the rectangular through hole 10, and the cross beam at the top of the portal frame 12 can move left and right in the rectangular through hole 10; the top surface in the rectangular through hole 10 is positioned between two upper vertical plates 12-1, and the bottom surface in the rectangular through hole 10 is positioned between two lower vertical plates 12-3.
In the above description, the two lower vertical plates 12-3 have the function of limiting, that is, the two lower vertical plates 12-3 are just clamped outside the rectangular through hole; when the spring 22 is in a reset state, the outer pressing plate 18 is positioned at the bottom of the rectangular groove 13-1, and the bottom of the wheel 20 is positioned below the bottom of the hook plate, namely the height of the wheel meets the requirement that the wheel contacts the ground firstly when a hoisted object falls.
The working principle is as follows:
1, before use, firstly adjusting the height of a hook plate, moving the two ends of a bearing threaded rod 16 left and right, quickly drawing out the two ends of the bearing threaded rod 16 from corresponding through holes 12-6 to complete the adjustment of the height of the hook plate, and finally screwing nuts 16-1 on the two ends of the bearing threaded rod 16 for fixing; moving the two portal frames to the rectangular through holes on the bearing steel plate 1, so that the two portal frames are symmetrically distributed in the rectangular through holes; meanwhile, the position of the portal frame 12 in the rectangular through hole 10 is adjusted, so that the hook plate 13 can be just hooked in the groove on the GIS base and inserted into the corresponding positioning hole 11 through the first screw 12-5, and the positioning of the portal frame and the bearing steel plate 1 is completed;
2, adjusting the positions of the two bow shackles 7, namely arranging the two bow shackles 7 in different second hanging holes 4 according to the width of a hoisted object, but ensuring that the two bow shackles 7 are symmetrically distributed;
when the GIS base connecting block is used, the hook 8 is firstly hooked on a hanging ring on the GIS base, the end part of the bottom surface of the hook plate 13 is hooked in a groove on the periphery of the GIS base, and then the second screw rod 17 is rotated downwards, so that the end part connecting block 17-1 is tightly propped against the GIS base, and the hook plate 13 and the groove on the periphery of the GIS base are fixed together; then the lifting hook of the crane hooks the iron ring 2 to start transferring;
4, when the lifting falls, the bottom of the wheel is positioned below the lower plate surface of the hook plate when the pressing rolling assembly is reset by the spring 22, when an object falls, the bottom of the wheel firstly falls to the ground, at the moment, a worker can stop the lifting object from falling, the outer side of the wheel is stepped by feet to press the pressing plate to roll on the ground, so that the lifting object moves to a required position, and the lifting object is not required to be pushed back and forth by the worker to adjust and position; after the adjustment is finished, the hoisted object is continuously dropped, and the rapid positioning of the object can be finished; when the object continues to fall, the outer pressing plate will move upward along the positioning vertical rod pressing spring 22.
The utility model has the advantages that the bearing steel plate is arranged, the function of dispersing the distance of the steel wire rope is realized, the steel wire rope keeps a certain distance with the equipment, and the friction between the hoisting tool and the hoisting body is reduced; the hook plate is arranged, so that the stability of integral adjustment is ensured; through being provided with at hook plate lateral surface and pressing the roll subassembly, the hoist and mount body of being convenient for is at the local accurate location on ground, convenient to use, easy operation.
Claims (6)
1. The utility model provides an outdoor construction special lifting device of transformer substation, includes bearing steel sheet (1), hoop (2), wire rope (5) and hook (8), its characterized in that: the iron ring (2) is positioned above the center of the bearing steel plate (1), first hanging holes (3) are symmetrically dug in the two sides of the middle position of the upper part of the bearing steel plate (1), hanging rings (6) are respectively arranged in each first hanging hole (3) in a penetrating mode, and each hanging ring (6) is connected with the iron ring (2) through a steel wire rope (5); at least six second hanging holes (4) are dug in the bearing steel plate (1) below the first hanging holes (3), the distance between every two second hanging holes (4) is the same, two bow shackles (7) are arranged in the two second hanging holes (4), two steel wire ropes (5) are connected in the two bow shackles (7), and hooks (8) are connected to the bottom ends of the steel wire ropes (5); a groove (9) is dug in the bearing steel plate (1) below the second hanging hole (4), a rectangular through hole (10) is formed in the bearing steel plate (1) below the groove (9), and at least ten positioning holes (11) are formed in the bearing steel plate (1) below the rectangular through hole (10); two clamping assemblies are inserted into the rectangular through hole (10), and each clamping assembly is connected with the rectangular through hole (10) in a sliding mode.
2. The outdoor construction special lifting appliance of transformer substation of claim 1, characterized in that: each clamping assembly consists of a portal frame (12), upper vertical plates (12-1), a bearing threaded rod (16), a hook plate (13) and an inner side positioning plate (14), the upper vertical plates (12-1) are arranged on two sides of the middle position of a beam at the top end of the portal frame (12) respectively, clamping blocks (12-2) are arranged at positions, corresponding to the grooves (9), of the inner side of each upper vertical plate (12-1), and each clamping block (12-2) is connected with the grooves (9) on two side faces of the bearing steel plate (1) in a sliding mode respectively; lower vertical plates (12-3) are symmetrically arranged on two sides of the middle position of the bottom surface of a top cross beam of the portal frame (12), the position, corresponding to the positioning hole (11), of each lower vertical plate (12-3) is provided with the same hole in an excavating mode, the position, corresponding to the hole, of the outer side surface of each lower vertical plate (12-3) is provided with a first guide pipe (12-4) with internal threads, and a matched first screw rod (12-5) is inserted into each first guide pipe (12-4) in a rotating mode; the top beam of the portal frame (12) is inserted into the rectangular through hole (10); at least five through holes (12-6) are respectively dug in the side surfaces of two vertical rods of the portal frame (12), and the through holes (12-6) are vertically distributed; a bearing threaded rod (16) penetrates through the through holes (12-6) on the two vertical rods of the portal frame, and two ends of the bearing threaded rod (16) are fixed with the two vertical rods of the portal frame through nuts (16-1); each bearing threaded rod (16) positioned between two vertical rods of the portal frame is respectively connected with a hook plate (13), the bearing threaded rod (16) penetrates through the top of the bearing threaded rod (16), and the top of each hook plate (13) is movably sleeved on the bearing threaded rod (16); the hook plates (13) are distributed in an L shape, an inner side positioning plate (14) is vertically arranged in the middle of the inner side surface of the hook plate (13), second guide pipes (15) with two internal threads are arranged on the inner side positioning plate (14), a through hole is dug in the inner side positioning plate (14) corresponding to each second guide pipe (15), a second threaded rod (17) is rotatably inserted in each second guide pipe (15), and an end part connecting block (17-1) is arranged at the bottom of each second threaded rod (17); rectangular grooves (13-1) are respectively dug in the middle lower part of the outer side face of each hook plate (13), and pressing rolling assemblies are respectively arranged in each rectangular groove (13-1).
3. The outdoor construction special lifting appliance of transformer substation of claim 2, characterized in that: each pressing rolling assembly is composed of a positioning vertical rod (21), an external pressing plate (18), baffles (19), wheels (20) and a spring (22), two positioning vertical rods (21) are arranged in each rectangular groove (13-1), one end of each external pressing plate (18) is located in each rectangular groove (13-1), each positioning vertical rod (21) is inserted into each external pressing plate (18) in a penetrating mode, three baffles (19) are vertically arranged on the bottom surface of each external pressing plate (18) located outside each rectangular groove (13-1), and the distance between every two adjacent baffles (19) is the same; the three baffle plates (19) divide the lower part of the external pressing plate (18) into two spaces, and each space is connected with a wheel (20) through a connecting shaft (19-1); and a spring (22) is arranged outside each positioning vertical rod (21) above the external pressing plate (18), and the bottom of each spring (22) is fixedly connected with the upper surface of the external pressing plate (18).
4. The outdoor construction special lifting appliance of transformer substation of claim 1, characterized in that: the second hanging holes (4) are distributed in a horizontal row, and the two bow shackles (7) are symmetrically arranged in the second hanging holes (4) at two ends of the bearing steel plate (1).
5. The outdoor construction special lifting appliance of transformer substation of claim 1, characterized in that: the positioning holes (11) are distributed in a horizontal row, and the distance between every two adjacent positioning holes (11) is the same.
6. The outdoor construction special lifting appliance of transformer substation of claim 2, characterized in that: the positions of the two lower vertical plates (12-3) correspond to the positions of the two upper vertical plates (12-1) up and down, a cross beam at the top of the portal frame (12) is positioned in the rectangular through hole (10), and the cross beam at the top of the portal frame (12) can move left and right in the rectangular through hole (10); the top surface in the rectangular through hole (10) is located at a position between two upper vertical plates (12-1), and the bottom surface in the rectangular through hole (10) is located at a position between two lower vertical plates (12-3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020837785.9U CN212450250U (en) | 2020-05-19 | 2020-05-19 | Special lifting appliance for outdoor construction of transformer substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020837785.9U CN212450250U (en) | 2020-05-19 | 2020-05-19 | Special lifting appliance for outdoor construction of transformer substation |
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| Publication Number | Publication Date |
|---|---|
| CN212450250U true CN212450250U (en) | 2021-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020837785.9U Active CN212450250U (en) | 2020-05-19 | 2020-05-19 | Special lifting appliance for outdoor construction of transformer substation |
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| CN (1) | CN212450250U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114183004A (en) * | 2021-10-29 | 2022-03-15 | 国网河南省电力公司中牟县供电公司 | Auxiliary device for erecting support frame of power transmission and transformation line tower body and construction method |
-
2020
- 2020-05-19 CN CN202020837785.9U patent/CN212450250U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114183004A (en) * | 2021-10-29 | 2022-03-15 | 国网河南省电力公司中牟县供电公司 | Auxiliary device for erecting support frame of power transmission and transformation line tower body and construction method |
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