Rapid hoisting tool for transformer bushing

Abstract

The rapid hoisting tool comprises a supporting rod, a hoisting tool hook is arranged at the top end of the supporting rod, a tray is arranged at the bottom end of the supporting rod, a supporting disc is arranged in the middle of the supporting rod, a limiting pressing disc is arranged at the upper end of the supporting rod, and an auxiliary hoisting rod is connected to one side of the tray; the lower portion of the auxiliary hoisting rod is fixedly sleeved with a bolt block, the upper portion of the auxiliary hoisting rod is movably sleeved with a lantern ring, and one end of the lantern ring is connected with the limiting pressing disc through a connecting rod. Due to the fact that the limiting pressing disc, the supporting disc and the tray are adopted, the transformer bushing can be tightly fixed, and the hoisting structure can be simplified; according to the transformer bushing hoisting tool, a plurality of bushings can be hoisted at a time, the construction efficiency is improved, the stability of the bushings in the hoisting process can be ensured through the tool, the hoisting efficiency of the transformer bushings can be remarkably improved, and the construction cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of electric power equipment, and in particular to a transformer bushing quick hoisting tool. Background Art

[0002] The transformer bushing is the main insulating device outside the transformer box. The lead wires of the transformer winding must pass through the insulating bushing to insulate the lead wires and between the lead wires and the transformer casing. At the same time, it plays the role of fixing the lead wires. The transformer bushing is a high-voltage bushing that leads the high and low voltage leads inside the transformer to the outside of the oil tank. It not only serves as a lead to the high voltage of the ground, but also plays the role of fixing the lead wires. The transformer bushing is one of the current-carrying components of the transformer. During the operation of the transformer, the load current passes through it for a long time, and the short-circuit current passes through it when a short circuit occurs outside the transformer.

[0003] After searching the relevant patent documents, the Chinese invention patent with application number CN201410725134.X discloses a lifting device for high-voltage bushing of power transformer, including a hook, a base plate, a rope, and two rope adjustment handles. The hook is fixed at the center of the base plate. The rope adjustment handle includes a handle head and a handle column. The handle head is fixedly connected to the handle column. Two through holes are symmetrically provided at both ends of the base plate. The handle column of the rope adjustment handle is placed in the through hole. The handle head is located on the side of the base plate where the hook is located. The outer circle of the handle head is larger than the aperture of the through hole. The handle column of the rope adjustment handle has a spiral rope winding groove. The rope is wound on the handle column. In the process of hoisting the high-voltage bushing of the transformer, it is usually adopted to adjust the length of the lifting ropes at both ends so as to perform oblique insertion hoisting on the high-voltage bushing. However, in the process of hoisting the high-voltage bushing, the lengths of both ends are adjusted respectively. It is difficult to ensure the angle of the bushing due to pressing or lifting the outer end of the bushing, and it is easy to cause the bushing to shake, and it is easy to cause bumps and damage to the bushing, or even cause the bushing to be scrapped, resulting in unnecessary losses, resulting in more time consumption, which is not conducive to improving work efficiency. In addition, the center point of the high-voltage bushing on the hoisting equipment will also produce corresponding changes, which makes hoisting inconvenient, and is not conducive to the construction personnel to quickly complete the hoisting and install the high-voltage bushing.

[0004] Therefore, it is necessary to improve the prior art and provide a transformer bushing rapid lifting tool to solve the problems raised in the above background technology. Summary of the invention

[0005] The purpose of the present invention is to provide a transformer bushing quick lifting tool to solve the problem of bushing lifting difficulties in the above-mentioned background technology, aiming to improve the safety of transformer bushing lifting operations.

[0006] In order to achieve the above purpose, the technical solution adopted by the present invention is:

[0007] The transformer bushing quick lifting tool comprises a limiting pressure plate, a support rod vertically connected to the center position of the limiting pressure plate and passing through the limiting pressure plate, a lifting hook is arranged at the top of the support rod, a support plate is arranged in the middle of the support rod, a plurality of limiting grooves with equal apertures are vertically opened on the support plate, a tray is arranged at the bottom end of the support rod, a plurality of placement grooves with equal diameters are vertically opened on the tray, and an auxiliary lifting component is connected to the right side of the tray.

[0008] As a further solution of the present invention: the auxiliary lifting assembly includes an auxiliary lifting rod, the upper movable sleeve of the auxiliary lifting rod is provided with a ring, the left end of the ring is fixedly connected to the limiting pressure plate through a connecting rod, and the lower fixed sleeve of the lifting rod is provided with a bolt block.

[0009] As a further solution of the present invention: limited position holes are equidistantly provided on the inner wall of the upper end of the support rod, and one of the holes is provided with a latch.

[0010] As a further solution of the present invention: a movable groove is arranged in the inner center of the limiting pressure plate, and a group of limiting blocks are arranged relatively inside the movable groove, a sliding groove matching the limiting blocks is opened on the support rod, and pressure grooves are also arranged around the lower wall of the limiting pressure plate.

[0011] As a further solution of the present invention: a plurality of buffer springs are arranged at the bottom of the placement groove, a metal support plate is fixedly arranged at the upper end of the buffer spring, a rubber pad is arranged at the upper end of the metal support plate, and both the rubber pad and the metal support plate are arc-shaped structures.

[0012] As a further solution of the present invention: the number of the limiting grooves, the placing grooves and the pressing grooves is the same, and the inner circle of the limiting groove is provided with a protective cushion.

[0013] As a further solution of the present invention: the lower middle portion of the support rod is a two-section structure, and the two sections of the support rod are connected by threads.

[0014] As a further solution of the present invention: the limit pressure plate, support plate, support rod and tray are all made of 0Cr25Ni20 heat-resistant stainless steel material.

[0015] As a further solution of the present invention: the limiting pressure plate, the supporting plate and the tray are disc structures with the same diameter.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The transformer bushing quick lifting tool of the present invention adopts a limiting pressure plate, a support plate and a tray, which can tightly fix the transformer bushing. It can simplify the lifting structure. During installation, the bushing is directly placed down from the limiting groove of the support plate, so that the lifting process is simple and fast, and the construction efficiency is improved. The tooling can ensure the stability of the bushing during the lifting process, which can significantly improve the lifting efficiency of the transformer bushing and reduce the construction cost.

[0018] 2. The transformer bushing quick lifting tool of the present invention is provided with a buffer structure at the bottom of the tray, and a rubber pad is provided on the lower wall of the limiting pressure plate, which can prevent the bottom and top of the bushing from colliding and reduce the bushing damage accidents.

[0019] 3. The transformer bushing quick lifting tool of the present invention is provided with an auxiliary lifting rod, which can assist in adjusting the angle during the lifting process to avoid shaking due to the displacement of the center of gravity or wind factors during lifting. The angle of the entire lifting device can be adjusted by pulling the auxiliary lifting rod to avoid large shaking and hitting the bushing, reduce the risk of shaking and collision, and ensure the safety of the staff.

[0020] 4. The transformer bushing quick lifting tool provided by the present invention has the advantages of safe and reliable operation, long service life, easy maintenance, simple operation and use, high efficiency, superior performance, light structure, and wide applicability. A limit pressure plate is used for fixing work, and a support plate is provided to fix four bushings at the same time, which not only ensures the stability of the bushing lifting, but also effectively improves the work efficiency and is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of the transformer bushing rapid lifting tooling;

[0022] Figure 2 This is a schematic diagram of the structure of removing the limit pressure plate in the transformer bushing rapid lifting tooling;

[0023] Figure 3 This is a structural schematic diagram of the limit pressure plate in the transformer bushing rapid lifting tooling;

[0024] Figure 4 This is a schematic diagram of the structure for placing slots in the transformer bushing quick lifting tooling.

[0025] In the figure: 1. sling hook; 2. limit pressure plate; 3. limit groove; 4. support plate; 5. support rod; 6. placement groove; 7. tray; 8. connecting rod; 9. ring; 10. auxiliary lifting rod; 11. bolt block; 12. pressure groove; 13 movable groove; 14. limit block; 15. rubber pad; 16. metal support plate; 17. buffer spring; 18. limit socket. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0027] Embodiment 1:

[0028] Please see attached Figure 1-4 The transformer bushing quick lifting tool comprises a limiting pressure plate 2, a support rod 5 vertically connected to the center position of the limiting pressure plate 2 and passing through the limiting pressure plate 2, a lifting hook 1 is arranged at the top of the support rod 5, a support plate 4 is arranged in the middle of the support rod 5, a plurality of limiting grooves 3 with equal apertures are vertically opened on the support plate 4, a tray 7 is arranged at the bottom end of the support rod 5, a plurality of placement grooves 6 with equal diameters are vertically opened on the tray 7, and an auxiliary lifting component is connected to the right side of the tray 7.

[0029] The limiting pressure plate 2 is located at the top of the tooling and is used for fixing and positioning. The support rod 5 vertically passes through the center of the limiting pressure plate to play a supporting role. The sling hook 1 is installed at the top of the support rod for connecting the lifting equipment. The support plate 4 is located in the middle of the support rod to provide additional stability. The support plate 4 is provided with a plurality of limiting grooves 3 of equal aperture for accurately positioning the bushing. A tray 7 is provided at the bottom end of the support rod 5. The tray 7 is provided with a plurality of placement grooves 6 of equal diameter. An auxiliary lifting component is connected to the right side of the tray 7 for assisting the lifting operation. Due to the use of the limiting pressure plate 2, the support plate 4 and the tray 7, when using the present device for lifting, the bushing is directly placed downward from the limiting groove 3 of the support plate 4 to ensure that the bottom of the bushing is stably placed in the placement groove 6 of the tray 7. The limiting groove 3 and the placement groove 6 fix the bushing tightly to ensure that the bushing will not shake due to external factors during the lifting process, thereby ensuring the stability of the transformer bushing lifting.

[0030] The auxiliary lifting assembly includes an auxiliary lifting rod 10, the upper movable sleeve of the auxiliary lifting rod 10 is provided with a ring 9, the left end of the ring 9 is fixedly connected to the limit pressure plate 2 through a connecting rod 8, and the lower fixed sleeve of the auxiliary lifting rod 10 is provided with a bolt block 11.

[0031] The auxiliary lifting rod 10 has an upper movable sleeve provided with a ring 9 for fixing the connecting rod 8, and the height of the limit pressure plate 2 is adjusted through the connecting rod 8. The inner circle radius of the ring 9 is larger than the radius of the auxiliary lifting rod 10. The ring 9 can move up and down along the auxiliary lifting rod 10 to ensure the stability of the auxiliary lifting assembly. The auxiliary lifting rod 10 is fixedly sleeved at the lower part with a bolt block 11. The bolt block 11 is used to assist in adjusting the angle during the lifting process to avoid shaking due to the center of gravity or wind during lifting. The angle of the entire lifting device can be adjusted by fixing a rope on the bolt to pull the auxiliary lifting rod 10 to avoid large shaking and hitting the casing, reduce the risk of shaking and collision, and ensure the safety of the staff.

[0032] The inner wall of the upper end of the support rod 5 is provided with limited insertion holes 18 at equal intervals, and one of the insertion holes 18 is provided with a latch.

[0033] Limiting holes 18 are equidistantly provided on the inner wall of the upper end of the support rod 5, and a pin is inserted into one of the limiting holes 18. After the sleeve is fixed, the limiting pressure plate 2 can be covered on the upper end of the sleeve, and then the pin is inserted into the limiting hole 18 at the upper end of the limiting pressure plate 2 to fix the position of the limiting pressure plate 2 to prevent the sleeve from tilting and falling off. The limiting holes provided on the inner wall of the upper end of the support rod 5 can cooperate with the pin to adjust the position of the limiting pressure plate 2 according to the height of the sleeve to ensure the stability of the sleeve.

[0034] A movable groove 13 is arranged at the inner center of the limiting pressure plate 2, and a group of limiting blocks 14 are arranged relatively inside the movable groove 13. A sliding groove matching the limiting blocks 14 is opened on the support rod 5, and pressure grooves 12 are also arranged around the lower wall of the limiting pressure plate 2.

[0035] A movable groove 13 is arranged at the inner center of the limiting pressure plate 2, and the radius of the movable groove 13 is slightly larger than the radius of the support rod 5, and limiting blocks 14 are arranged on both sides of the movable groove 13. A sliding groove matching the limiting blocks 14 is opened on the support rod 5 to prevent the limiting pressure plate 2 from rotating. A pressing groove 12 is also arranged around the lower wall of the limiting pressure plate 2, and the interior of the pressing groove 12 is filled with sponge. The interior of the limiting pressure plate 2 is provided with a movable groove 13 and a limiting block 14, which match the sliding groove of the support rod, so that the whole tooling is smoother during use.

[0036] A plurality of buffer springs 17 are disposed at the bottom of the placement slot 6 , a metal support plate 16 is fixedly disposed on the upper end of the buffer spring 17 , a rubber pad 15 is disposed on the upper end of the metal support plate 16 , and both the rubber pad 15 and the metal support plate 16 are arc-shaped structures.

[0037] A placement groove 6 is provided on the tray 7, and a plurality of buffer springs 17 are provided at the bottom of the placement groove 6. A metal support plate 16 is fixedly provided at the upper end of the buffer spring 17, and a rubber pad 15 is provided at the upper end of the metal support plate 16. Both the rubber pad 15 and the metal support plate 16 are arc-shaped structures, which can prevent the bottom and top of the sleeve from colliding.

[0038] The number of the limiting grooves 3, the placement grooves 6 and the pressing grooves 12 is the same, and the inner circle of the limiting grooves 3 is provided with protective pads. The number of the limiting grooves 3, the placement grooves 5 and the pressing grooves 12 is the same, ensuring symmetry and consistency. The inner circle of the limiting grooves 3 is provided with protective pads for protecting the surface of the casing. The protective pads play a protective role to prevent the casing from being bumped. The protective pads can be replaced with protective pads of different radii according to different casings.

[0039] The middle and lower parts of the support rod 5 are of a two-section structure, and the two sections of the support rod 5 are connected by threads. The two-section structure and the threaded connection can adjust the length of the support rod. The length of the support rod 5 can be adjusted according to the situation of the substation to meet the different specifications of the casing. When it needs to be lengthened, it can be achieved by adding another section of threaded rod, so that the tooling can meet the strength requirements while being more convenient for transportation and storage.

[0040] The limit pressure plate 2, support plate 4, support rod 5 and tray 7 are all made of 0Cr25Ni20 heat-resistant stainless steel material. This stainless steel material is corrosion-resistant and high-temperature-resistant, suitable for industrial environments, and ensures the safety and strength of the lifting tooling during use.

[0041] The limit pressure plate 2, support plate 4 and tray 7 are disc structures with the same diameter, so that the upper, middle and lower parts of the tooling are subjected to basically the same force. When external force acts, the overall center of gravity will not shift, ensuring that the angle changes slightly during lifting.

[0042] When the main transformer insulating bushing is hoisted, the operator needs to move the limit pressure plate 2 upwards until it can be easily removed, in order to make room for the subsequent bushing insertion operation, and slowly insert the transformer bushing from the limit groove 3 on the support plate 4 to ensure that the bottom of the bushing can be accurately placed in the placement groove 6 on the tray 7. During the bushing insertion process, the bushing needs to be kept stable to avoid deviation or tilting, and the movable groove 13 of the limit pressure plate 2 is aligned with the support rod 5, and at the same time, the limit block 14 on the movable groove 13 is accurately aligned with the slide groove on the support rod 5 to ensure the stability of the limit pressure plate 2 during the hoisting process. After completing the above alignment action, the operator needs to slowly press the limit pressure plate 2 downwards until it is firmly located at the top of the bushing, align the first limit plug hole 18 above the limit pressure plate 2 with the pin and insert it to fix the position of the limit pressure plate 2, and the bushing is firmly placed in the limit The auxiliary lifting rod 10 is used to fix the auxiliary lifting rod 10 on the lifting device, and the auxiliary lifting rod 10 is used to assist in adjusting the angle during the lifting process, and effectively avoid the shaking caused by the center of gravity or wind. If the angle of the lifting device needs to be adjusted, the operator can easily pull the rope to change the direction of the auxiliary lifting rod 10, so as to accurately adjust the angle of the entire lifting device, avoid large shaking, thereby reducing the risk of bushing collision and ensuring the safety of the staff. The structural design of the present invention is reasonable, and multiple transformer bushings can be lifted smoothly and efficiently at one time, which improves the efficiency and quality of bushing lifting and transportation and meets the needs of production use.

[0043] The above is only a preferred specific implementation method of the patent of the present invention, but the protection scope of the patent of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme of the patent and the invention concept of the patent within the technical scope disclosed by the patent of the present invention, which should be covered by the protection scope of the patent of the present invention.

Claims

1. Transformer bushing quick lifting tool, characterized by: It comprises a limiting pressure plate (2), a support rod (5) vertically connected to the center position of the limiting pressure plate (2) and passing through the limiting pressure plate (2), a sling hook (1) is arranged at the top end of the support rod (5), a support plate (4) is arranged in the middle of the support rod (5), a plurality of limiting grooves (3) with equal apertures are vertically opened on the support plate (4), a tray (7) is arranged at the bottom end of the support rod (5), a plurality of placement grooves (6) with equal diameters are vertically opened on the tray (7), and an auxiliary lifting component is connected to the right side of the tray (7).

2. The transformer bushing quick lifting tool according to claim 1, characterized in that: The auxiliary lifting assembly comprises an auxiliary lifting rod (10), the upper movable sleeve of the auxiliary lifting rod (10) is provided with a collar (9), the left end of the collar (9) is fixedly connected to the limit pressure plate (2) via a connecting rod (8), and the lower fixed sleeve of the auxiliary lifting rod (10) is provided with a bolt block (11).

3. The transformer bushing quick lifting tool according to claim 1, characterized in that: The inner wall of the upper end of the support rod (5) is provided with limited insertion holes (18) at equal intervals, and one of the insertion holes (18) is provided with a latch.

4. The transformer bushing quick lifting tool according to claim 1, characterized in that: The inner center of the limiting pressure plate (2) is provided with a movable groove (13), and a group of limiting blocks (14) are arranged relatively inside the movable groove (13); a sliding groove matching the limiting blocks (14) is opened on the support rod (5); and pressure grooves (12) are also arranged around the lower wall of the limiting pressure plate (2).

5. The transformer bushing quick lifting tool according to claim 1, characterized in that: A plurality of buffer springs (17) are arranged at the bottom of the placement groove (6); a metal support plate (16) is fixedly arranged at the upper end of the buffer spring (17); a rubber pad (15) is arranged at the upper end of the metal support plate (16); and both the rubber pad (15) and the metal support plate (16) are arc-shaped structures.

6. The transformer bushing quick lifting tool according to claim 1, characterized in that: The number of the limiting grooves (3), the placement grooves (6) and the pressing grooves (12) is the same, and the inner ring of the limiting groove (3) is provided with a protective soft pad.

7. The transformer bushing quick lifting tool according to claim 1, characterized in that: The middle and lower part of the support rod (5) is a two-section structure, and the two sections of the support rod (5) are connected by threads.

8. The transformer bushing quick lifting tool according to claim 1, characterized in that: The limit pressure plate (2), the support plate (4), the support rod (5) and the tray (7) are all made of 0Cr25Ni20 heat-resistant stainless steel material.

9. The transformer bushing quick lifting tool according to claim 1, characterized in that: The limiting pressure plate (2), the supporting plate (4) and the tray (7) are circular disc structures with the same diameter.

Images