A lifting fixture for electric power

Abstract

The present invention relates to the field of hoisting technology, and in particular to a hoisting fixture for electric power; it comprises a supporting plate; four corner positions on the upper end of the supporting plate are all provided with lifting rings, the lower end of the supporting plate is installed with a supporting plate through a shaft column, the lower end of the supporting plate is installed with a rectangular frame, the upper end of the shaft column slides through the supporting plate, a baffle located below the supporting plate is provided on the shaft column, a fixing mechanism for cooperating with a lifting ear is provided on the side of the rectangular frame, and a limiting mechanism cooperating with an ear seat is provided on the rectangular frame; the fixing mechanism of the present invention allows the cable to be hung at the corresponding position of the lifting ear through a tensioning part and a winding part, thereby reducing the adjustment time and allowing the transformer to be lifted stably to avoid its displacement or tilt affecting subsequent installation work, and the lifting fixture is further fixed to the transformer through the cooperation of the limiting mechanism and the ear seat, thereby improving the stability of the transformer after being lifted, and facilitating manual adjustment of the transformer position for the alignment installation of the transformer and the fixing frame.

Description

Technical Field

[0001] This invention relates to the field of hoisting technology, and in particular to a hoisting clamp for power applications. Background Technology

[0002] Transformers are the most common type of electrical equipment. The exterior of a transformer mainly consists of an oil tank (i.e., the outer casing), a cover plate, and a base. The upper part of the cover plate is equipped with lugs that work with steel cables to lift the cover plate and the oil tank. The side wall of the oil tank is equipped with lifting lugs that work with steel cables to lift the transformer oil tank or to lift the entire transformer and install it on the corresponding fixed frame. Since transformers are usually large and heavy, lifting clamps are often used for lifting operations during installation. Typically, steel cables or lifting slings are directly attached to the lifting lugs of the transformer for lifting operations.

[0003] Current lifting fixtures have the following problems in transformer lifting operations: Existing lifting operations simply involve hanging steel cables or lifting slings on the lifting lugs of the transformer without additional fixing and stabilizing mechanisms. Therefore, they are easily affected by external factors, causing the transformer to sway or shift after being lifted, increasing safety risks. Furthermore, simply hanging steel cables or lifting slings directly on the lifting lugs makes it difficult to ensure that the connection between the steel cables or lifting slings and the lifting lugs is completely symmetrical and balanced. As a result, during the lifting process, the transformer may tilt due to uneven force, causing it to be lifted and moved in an tilted state, which in turn affects the subsequent alignment and fixation with the fixing frame. Summary of the Invention

[0004] In view of the above problems, this application provides a lifting clamp for power applications to solve the aforementioned technical problems.

[0005] To achieve the above objectives, the embodiments of this application provide the following technical solutions: The embodiments of this application provide a lifting clamp for power applications, including a support plate; lifting rings are provided at the four corners of the upper end of the support plate, a support plate is installed at the lower end of the support plate via a shaft column, a rectangular frame is installed at the lower end of the support plate, the upper end of the shaft column slides through the support plate, a baffle is provided on the shaft column located below the support plate, a fixing mechanism for cooperating with the lifting lugs is provided on the side of the rectangular frame, and a limiting mechanism for cooperating with the lug seat is provided on the rectangular frame.

[0006] As a preferred embodiment, the fixing mechanism includes slots, the support plate has an inverted U-shaped structure, and two slots are symmetrically opened at both the front and rear ends of the rectangular frame. Two guide wheels are symmetrically installed in the slots. A cable is provided on each of the front and rear sides of the rectangular frame. The cable cooperates with the corresponding two lifting lugs to fix the rectangular frame to the transformer. The two ends of the cable pass through the two guide wheels in the corresponding slots.

[0007] As a preferred embodiment, the support plate is provided with a winding part for winding the cable, and the rectangular frame is provided with a tensioning part for tensioning the cable.

[0008] As a preferred embodiment, the winding section includes a rotating shaft. The rotating shaft is provided between the two vertical sections of the support plate. Both ends of the rotating shaft rotate through the support plate and are equipped with winding reels. The two ends of the cable on the front side are attached and fixed to the lower surface of the corresponding winding reel, and the two ends of the cable on the rear side are attached and fixed to the upper surface of the corresponding winding reel. The support plate is provided with a locking device for restricting the rotation of the rotating shaft.

[0009] As a preferred embodiment, the locking component includes a waist-shaped plate, both ends of the rotating shaft are fixedly mounted with waist-shaped plates, both vertical sections of the support plate slide through limit posts, the opposite ends of the two limit posts slide through the corresponding waist-shaped plates, the opposite sections of the two limit posts are provided with protruding rings, a tension spring is installed between the protruding rings on the limit posts and the vertical sections of the corresponding support plates, a push plate is installed on the limit posts between the corresponding waist-shaped plates and the support plates, and a linkage component is provided between the two limit posts.

[0010] As a preferred embodiment, the tensioning part includes a support assembly. Two sets of support assemblies are symmetrically installed at the upper end of the rectangular frame. Each set of support assemblies consists of two symmetrical support plates. The support plates have an inverted U-shaped structure. The rectangular frame has rectangular slots that correspond one-to-one with the support plates. The lower end of the horizontal section of the support plate is equipped with a support column via a compression spring. The two support columns in the same set are movably inserted through the corresponding rectangular slots and are jointly installed with a shaft. A support rod is hinged to both ends of the shaft. A sleeve is hinged to both ends of the support rod. The sleeve is slidably fitted onto the cable, and a triangular area is formed between the support rod and the cable. A deflector for driving the rotation of the support column is provided on the support plate.

[0011] As a preferred embodiment, the deflecting component includes a sliding groove, the support column is provided with a sliding groove, a slider is slidably installed in the sliding groove, the slider is rotatably connected to the support plate through a torsion spring rod, push-pull plates are installed after the two ends of the torsion spring rod pass through the corresponding support plates, a connecting rod is installed between the two push-pull plates on the same torsion spring rod, and a lifting component for pulling the push-pull plates to rotate is provided on the support plate.

[0012] As a preferred embodiment, the limiting mechanism includes a bearing plate. A bearing plate is installed at the front and rear ends of the two vertical sections of the support plate. A bidirectional screw is rotatably installed between the two opposing bearing plates. A screw plate is threadedly connected to each of the two threaded sections of the bidirectional screw, and the screw plate is slidably connected to the support plate. A plug rod that mates with the through hole on the lug is installed on the lower part of the opposite face of the two opposing screw plates.

[0013] As a preferred embodiment, the linkage component includes a connecting rod, and a disk is hinged between the two limiting posts through the connecting rod. A guide post is installed at the upper end of the disk, and the upper end of the guide post slides through the support plate.

[0014] As a preferred embodiment, the lifting assembly includes a second tension spring, and a second tension spring corresponding to each connecting rod is installed at the lower end of the support plate. A fixing plate is installed at the lower end of the second tension spring, and a second rope is installed between the fixing plate and the corresponding connecting rod.

[0015] As a preferred embodiment, positioning plates for aligning the rectangular frame are provided at the four corners of the lower end of the rectangular frame, and the positioning plates are L-shaped. A first rope is installed between the four corners of the lower end of the support plate and the rectangular frame.

[0016] As a preferred embodiment, the rotating shaft and the bidirectional screw are connected by a worm gear transmission.

[0017] The above-described one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects:

[0018] The fixing mechanism of the present invention uses a tensioning part and a winding part to hang the cable at the corresponding position of the lifting lug, reducing adjustment time and allowing the transformer to be lifted smoothly, avoiding its deviation or tilting from affecting the subsequent installation work of the transformer. Furthermore, the limiting mechanism cooperates with the lug seat to further fix the lifting clamp to the transformer, thereby improving the stability of the transformer after it is lifted and facilitating manual adjustment of the transformer position for alignment and installation of the transformer and the fixing frame.

[0019] The tensioning section of this invention uses a torsion spring rod to position the lifting lug within the triangular area formed between the support rod and the cable. This ensures that when the winding section winds up the cable, the pull rope can be directly pulled and hooked onto the lifting lug. When the winding section releases the cable, the lifting lug is pulled away from the triangular area formed between the support rod and the cable by the pull of the second rope, so that the lifting clamp can be separated from the transformer. This process reduces manual operation, thereby reducing adjustment time and improving the efficiency of transformer lifting.

[0020] This invention enables two limiting posts to move synchronously to detach from or insert into the corresponding waist-shaped plate through a linkage component, thereby allowing a single person to fix and release the rotating shaft from the corresponding side of the transformer, thus simplifying the operation steps and improving work efficiency.

[0021] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0023] Figure 1 This is a first-view structural diagram of this application.

[0024] Figure 2 for Figure 1 A second-view structural diagram.

[0025] Figure 3 for Figure 2 Enlarged view of the structure at point A in the image.

[0026] Figure 4 This is a schematic diagram of the deflection component structure of this application.

[0027] Figure 5 for Figure 4 Enlarged view of the structure at point B in the middle.

[0028] Figure 6 This is a schematic diagram of the limiting mechanism structure of this application.

[0029] Figure 7 for Figure 6 Enlarged view of the structure at point C.

[0030] Figure label:

[0031] 10. Support plate; 11. Shaft column; 12. Support plate; 13. Rectangular frame; 14. Baffle; 15. Positioning plate; 16. Rope No. 1; 2. Fixing mechanism; 20. Guide wheel; 21. Cable; 22. Rewinding section; 220. Rotating shaft; 221. Rewinding reel; 4. Locking element; 40. Waist plate; 41. Limiting post; 42. Tension spring No. 1; 43. Push plate; 44. Connecting rod; 4 5. Guide post; 23. Tensioning part; 230. Support plate; 231. Support column; 232. Shaft; 233. Support rod; 234. Sleeve; 5. Deflecting component; 50. Slider; 51. Torsion spring rod; 52. Push-pull plate; 53. Connecting rod; 54. No. 2 tension spring; 55. No. 2 rope; 3. Limiting mechanism; 30. Bidirectional screw; 31. Screw plate; 32. Insert rod; 33. Worm gear. Detailed Implementation

[0032] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0033] like Figure 1 and Figure 2 As shown, a lifting clamp for power applications includes a support plate 10; lifting rings are provided at the four corners of the upper end of the support plate 10; a support plate 12 is installed at the lower end of the support plate 10 via a shaft column 11; a rectangular frame 13 is installed at the lower end of the support plate 12; the upper end of the shaft column 11 slides through the support plate 10; a baffle 14 is provided on the shaft column 11 located below the support plate 10; a fixing mechanism 2 for cooperating with the lifting lugs is provided on the side of the rectangular frame 13; and a limiting mechanism 3 for cooperating with the lug seat is provided on the rectangular frame 13.

[0034] like Figure 2 and Figure 3 As shown, positioning plates 15 for aligning the rectangular frame 13 are provided at the four corners of the lower end of the rectangular frame 13, and the positioning plates 15 have an L-shaped structure. A rope 16 is installed between the four corners of the lower end of the support plate 10 and the rectangular frame 13. It should be noted that the lower end of the positioning plate 15 is chamfered to facilitate connection with the transformer.

[0035] like Figure 1 , Figure 2 and Figure 3 As shown, the fixing mechanism 2 includes a slot, the support plate 12 has an inverted U-shaped structure, and two slots are symmetrically opened at both the front and rear ends of the rectangular frame 13. Two guide wheels 20 are symmetrically installed in the slots. A cable 21 is provided on each of the front and rear sides of the rectangular frame 13. The cable 21 cooperates with the corresponding two lifting lugs to fix the rectangular frame 13 to the transformer. The two ends of the cable 21 pass through the two guide wheels 20 in the corresponding slots.

[0036] like Figure 1 As shown, the support plate 12 is provided with a winding part 22 for winding the cable 21, and the rectangular frame 13 is provided with a tensioning part 23 for tensioning the cable 21.

[0037] In practice, the lifting ring at the top of the support plate 10 is connected to the steel cable on the external crane. Then, the external crane moves the lifting clamp above the transformer and lowers it close to the transformer, so that the positioning plate 15 is locked at the corner of the transformer. This allows the rectangular frame 13 to move down and fit against the transformer in a straight position. As the external crane releases the steel cable, the support plate 10 moves down and abuts against the baffle 14. At this time, under the action of the tensioning part 23, the cable 21 is driven to move towards the transformer, and the corresponding part of the cable 21 will be located below the lifting lug. Then, the cable 21 is wound up manually through the winding part 22 to make the cable 21 wound up and tightened, so that the cable 21 is close to the lifting lug, thereby fixing the rectangular frame 13 to the transformer. During the winding process of the winding part 22, it will drive the limiting mechanism 3 to cooperate with the lug to further fix the lifting clamp to the transformer. Then, the external crane lifts the transformer through the lifting clamp for subsequent operations.

[0038] like Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the tensioning part 23 includes a support assembly. Two sets of support assemblies are symmetrically installed at the upper end of the rectangular frame 13. Each set of support assemblies consists of two symmetrical support plates 230. The support plates 230 have an inverted U-shaped structure. The rectangular frame 13 has rectangular slots that correspond one-to-one with the support plates 230. The lower end of the horizontal section of the support plate 230 is equipped with a support column 231 through a compression spring. The two support columns 231 in the same group move through the corresponding rectangular slots and are jointly installed with a shaft 232. A support rod 233 is hinged to both ends of the shaft 232. A sleeve 234 is hinged to both ends of the support rod 233. The sleeve 234 is slidably sleeved on the cable 21, and a triangular area is formed between the support rod 233 and the cable 21. A deflector 5 for driving the support column 231 to rotate is provided on the support plate 230.

[0039] like Figure 4 and Figure 5 As shown, the deflector 5 includes a groove. The support column 231 has a groove, and a slider 50 is slidably installed in the groove. The slider 50 is rotatably connected to the support plate 230 through a torsion spring rod 51. Push-pull plates 52 are installed after passing through the corresponding support plates 230 at both ends of the torsion spring rod 51. A connecting rod 53 is installed between the two push-pull plates 52 on the same torsion spring rod 51. A lifting assembly for pulling the push-pull plates 52 to rotate is provided on the support plate 10.

[0040] like Figure 4 As shown, the lifting assembly includes a second tension spring 54. The lower end of the support plate 10 is equipped with a second tension spring 54 that corresponds one-to-one with the connecting rod 53. A fixing plate is installed at the lower end of the second tension spring 54. A second rope 55 is installed between the fixing plate and the corresponding connecting rod 53.

[0041] In practice, after the rectangular frame 13 is attached to the transformer, as the support plate 10 moves downward, the second rope 55 is released to relieve the pull on the push-pull plate 52. The push-pull plate 52 rotates downward and resets under the action of the torsion spring rod 51. At the same time, the slider 50 drives the support column 231 to rotate towards the transformer. The support column 231 then drives the shaft 232 to move closer to the transformer. The shaft 232, through the support rod 233 and the sleeve 234, drives the corresponding cable 21 to rotate below the lifting lug. Then, the cable is manually wound up through the winding section 22. Cable 21 is wound up, causing the corresponding cable 21 to move upward and fit against the lifting lug. At the same time, the support column 231 is pushed upward through the shaft 232, and the compression spring is compressed. Then, the external crane pulls up the support plate 10. Because the cable 21 is in close contact with the lifting lug, the push-pull plate 52 cannot be pulled when the support plate 10 moves upward. At this time, the second tension spring 54 is stretched until the first rope 16 is tensioned. Then, as the support plate 10 moves upward, the lifting clamp and the fixed transformer will be lifted and moved to the corresponding installation position.

[0042] After the transformer is moved to the corresponding installation position and fixed, the cable 21 is manually released through the winding part 22. At this time, the support column 231 pushes the shaft 232 downward through the compression spring. The shaft 232 pushes the corresponding cable 21 downward and away from the lifting lug through the support rod 233 and the sleeve 234. At the same time, the limiting mechanism 3 disengages from the lug seat. Then, the external crane pulls the support plate 10 upward. The support plate 10 pulls the push-pull plate 52 upward through the second tension spring 54 and the second rope 55. The push-pull plate 52 drives the corresponding support column 231 to rotate away from the transformer through the torsion spring rod 51 and the corresponding slider 50. The support column 231 then drives the corresponding cable 21 to rotate away from the transformer through the shaft 232, the support rod 233 and the sleeve 234. At this time, as the external crane lifts, the lifting clamp is removed from the transformer.

[0043] like Figure 1 , Figure 2 , Figure 4 and Figure 6 As shown, the winding section 22 includes a rotating shaft 220. The rotating shaft 220 is provided between the two vertical sections of the support plate 12. Both ends of the rotating shaft 220 are mounted with winding reels 221 after rotating through the support plate 12. The two ends of the cable 21 on the front side are attached and fixed to the lower surface of the corresponding winding reel 221, and the two ends of the cable 21 on the rear side are attached and fixed to the upper surface of the corresponding winding reel 221. The support plate 12 is provided with a locking member 4 for restricting the rotation of the rotating shaft 220.

[0044] like Figure 2 and Figure 4As shown, the locking component 4 includes a waist-shaped plate 40. Both ends of the rotating shaft 220 are fixedly installed with waist-shaped plates 40. The two vertical sections of the support plate 12 slide through the limit posts 41. The opposite ends of the two limit posts 41 slide through the corresponding waist-shaped plates 40. The opposite sections of the two limit posts 41 are provided with protruding rings. A tension spring 42 is installed between the protruding ring on the limit post 41 and the corresponding vertical section of the support plate 12. A push plate 43 located between the corresponding waist-shaped plate 40 and the support plate 12 is installed on the limit post 41. A linkage component is provided between the two limit posts 41.

[0045] like Figure 4 As shown, the linkage component includes a connecting rod 44, and a disk is hinged between two limiting posts 41 via the connecting rod 44. A guide post 45 is installed at the upper end of the disk, and the upper end of the guide post 45 slides through the support plate 12.

[0046] In actual operation, the operator rotates the shaft 220 through the waist plate 40. The shaft 220 drives the winding reel 221 to rotate, and the winding reel 221 winds up the cable 21 to tighten the cable 21 and make the cable 21 fit against the lifting lug. At this time, the waist plate 40 moves to the position of the limiting post 41. Under the action of the first tension spring 42, the limiting post 41 moves and inserts into the corresponding waist plate 40 to restrict the rotation of the shaft 220, thereby keeping the cable 21 taut and in contact with the lifting lug. In addition, the rotation of the shaft 220 will drive the limiting mechanism 3 to cooperate with the lug seat.

[0047] After the lifting clamps are secured to the transformer, an external crane lifts the transformer and moves it to the corresponding installation position. The transformer is then lowered and secured in its designated position. Once secured, the push plate 43 is manually pushed towards the support plate 12, causing the limiting post 41 to disengage from the corresponding waist-shaped plate 40. The pushed limiting post 41 then pulls another limiting post 41 away from the corresponding waist-shaped plate 40 via a connecting rod 44. At this point, the rotating shaft 220 of the waist-shaped plate 40 rotates, causing the winding reel 221 to loosen the cable 21. Under the action of the tensioning part 23, the cable 21 moves away from the lifting lug. The external crane then lifts the support plate 10 until the first rope 16 is tensioned, simultaneously causing the tensioning part 23 to rotate the cable 21, moving it away from the transformer. Finally, as the external crane lifts the cable, the lifting clamps detach from the transformer.

[0048] like Figure 1 , Figure 4 , Figure 6 and Figure 7As shown, the limiting mechanism 3 includes a bearing plate. A bearing plate is installed at the front and rear ends of the two vertical sections of the support plate 12. A bidirectional screw 30 is rotatably installed between the two opposing bearing plates. A screw plate 31 is threadedly connected to each of the two threaded sections of the bidirectional screw 30. The screw plate 31 is slidably connected to the support plate 12. A plug rod 32 that mates with the through hole on the lug is installed on the lower part of the opposite surface of the two opposing screw plates 31.

[0049] like Figure 6 and Figure 7 As shown, the rotating shaft 220 and the bidirectional screw 30 are connected by a worm gear 33.

[0050] In practice, as the operator manually rotates the shaft 220 via the waist-shaped plate 40 to wind up the cable 21, the shaft 220 drives the bidirectional screw 30 to rotate via the worm gear 33. The bidirectional screw 30 drives the two corresponding screw plates 31 to move closer to each other. The screw plates 31 move to insert the insertion rod 32 into the through hole of the corresponding lug, further fixing the lifting fixture to the transformer, thereby improving the stability of the transformer after it is lifted. At the same time, it ensures the stability when the transformer is manually adjusted to the installation position. After the transformer is lifted and installed, the shaft 220 is rotated in the opposite direction to release the cable 21 from the lifting lug. The worm gear 33 then drives the bidirectional screw 30 to rotate in the opposite direction, so that the insertion rod 32 is disengaged from the through hole of the corresponding lug via the screw plates 31. The lifting fixture is then removed. The above operation is repeated to carry out the lifting and processing of other transformers.

[0051] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0052] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0053] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0054] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A lifting fixture for electric power, comprising a supporting plate; characterized in that: The four corners of the upper end of the support plate are all provided with lifting rings, the lower end of the support plate is installed with a supporting plate through a shaft column, the lower end of the support plate is installed with a rectangular frame, the upper end of the shaft column slides through the support plate, a baffle located below the support plate is provided on the shaft column, a fixing mechanism for cooperating with the lifting ear is provided on the side of the rectangular frame, and a limiting mechanism cooperating with the ear seat is provided on the rectangular frame, wherein: The fixing mechanism includes a notch, the support plate is an inverted shaped structure, two notches are symmetrically provided at both ends of the front and rear of the rectangular frame, two guide wheels are symmetrically installed in the notch for front and rear rotation, a cable is provided on each of the front and rear sides of the rectangular frame, the cable cooperates with the corresponding two lifting ears to fix the rectangular frame to the transformer, and the two ends of the cable pass through between the two guide wheels in the corresponding notches respectively; The support plate is provided with a reeling portion for reeling in the cable, and the rectangular frame is provided with a tensioning portion for tensioning the cable; The reeling part comprises a rotating shaft, a rotating shaft is arranged between the two vertical sections of the support plate, and reeling discs are installed at both ends of the rotating shaft after rotating through the support plate, the two ends of the cable located at the front side are fitted and fixed with the lower surface of the corresponding reeling disc, and the two ends of the cable located at the rear side are fitted and fixed with the upper surface of the corresponding reeling disc, and a locking member for limiting the rotation of the rotating shaft is arranged on the support plate; the rotating shaft and the bidirectional screw are connected through a worm gear transmission; The tensioning part includes a support assembly, two groups of support assemblies are symmetrically installed at the upper end of the rectangular frame, each group of support assemblies is composed of two left-right symmetrical support plates, the support plates are in an inverted shaped structure, a rectangular groove corresponding to the support plates is opened on the rectangular frame, a support is installed at the lower end of the horizontal section of the support plate through a compression spring, and two supports of the same group are movably inserted through the corresponding rectangular groove and are jointly installed with an axle rod, both ends of the axle rod are hinged with a support rod, both ends of the support rod are hinged with a sleeve, the sleeve is slidably sleeved on the cable, and a triangular area is formed between the support rod and the cable, and a deflection member for driving the support to rotate is provided on the support plate; After the rectangular frame is fitted with the transformer, as the support plate moves downward, the deflection member drives the support column to rotate toward the transformer, so that the support column drives the shaft rod to approach the transformer, and the shaft rod drives the corresponding cable to rotate to the bottom of the lifting lug through the support rod and the sleeve; The limiting mechanism includes a bearing plate, and the front and rear ends of the two vertical sections of the support plate are each installed with a bearing plate, a bidirectional screw is rotatably installed between the two front and rear opposite bearing plates, the two threaded sections of the bidirectional screw are threadedly connected with a screw plate, and the screw plate is slidably connected to the support plate, and an insertion rod that cooperates with the through hole on the ear seat is installed at the lower part of the opposite surface of the two front and rear opposite screw plates; The cable is wound up and tightened by rotating the shaft, so that the cable fits with the lifting ear. During the rotation of the shaft, the limit mechanism is driven to cooperate with the ear seat.

2. The electric power lifting fixture according to claim 1, characterized in that: The locking part includes a waist-shaped plate, and the two ends of the rotating shaft are fixedly installed with waist-shaped plates. The two vertical sections of the support plate slide through the limiting columns, and the opposite ends of the two limiting columns slide through the corresponding waist-shaped plates. The opposite sections of the two limiting columns are provided with convex rings, and a No. 1 tension spring is installed between the convex ring on the limiting column and the corresponding vertical section of the support plate. A pushing plate located between the corresponding waist-shaped plate and the support plate is installed on the limiting column, and a linkage component is arranged between the two limiting columns.

3. The electric power lifting fixture according to claim 1, characterized in that: The deflection member includes a slide groove, a slide groove is opened on the pillar, a slider is slidably installed in the slide groove, the slider is rotatably connected to the support plate through a torsion spring rod, push-pull plates are installed after the two ends of the torsion spring rod pass through the corresponding support plates, a connecting rod is installed between the two push-pull plates on the same torsion spring rod, and a lifting component for pulling the push-pull plate to rotate is provided on the supporting plate.

4. The electric power lifting fixture according to claim 2, characterized in that: The linkage assembly comprises a connecting rod, a disc is hinged between two limit columns through the connecting rod, a guide column is installed on the upper end of the disc, and the upper end of the guide column slides through the support plate.

5. The electric power lifting fixture according to claim 3, characterized in that: The lifting assembly includes a No. 2 tension spring, and the lower end of the support plate is equipped with a No. 2 tension spring corresponding to the connecting rod one by one. The lower end of the No. 2 tension spring is equipped with a fixed disk, and a No. 2 rope is installed between the fixed disk and the corresponding connecting rod.

6. The electric power lifting fixture according to claim 1, characterized in that: The four corners at the lower end of the rectangular frame are all provided with positioning plates for aligning the rectangular frame, and the positioning plates are in an L-shaped structure, and a No. 1 rope is installed between the four corners at the lower end of the supporting plate and the rectangular frame.

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