Transformer bushing assembly tool

Abstract

The invention discloses a transformer bushing assembly tool which comprises a movable base, and two pairs of supporting piece sets are vertically and symmetrically arranged on the base. Two bearing pieces used for supporting the sleeve flange are horizontally and symmetrically arranged between the two pairs of supporting piece sets. A pressing plate used for pressing the head of the sleeve is further horizontally arranged between the two pairs of supporting piece sets located above the bearing piece, and one end of the pressing plate is rotationally connected with one pair of supporting piece sets. A limiting rod used for abutting against the top face of the pressing plate to keep the pressing plate horizontal is arranged on the supporting piece set at the other end of the pressing plate, and the two ends of the limiting rod are inserted into the adjusting holes in the two supporting pieces of the supporting piece set on the corresponding side. And a lifting device for pressing a disc spring at the head of the sleeve is arranged on the base between the two pairs of supporting piece groups. The assembly tool is easy to operate, high in universality and capable of guaranteeing the overall pressing effect on the sleeve and improving the production efficiency.

Description

Technical Field

[0001] The present invention relates to a transformer bushing assembly tooling, belonging to the technical field of bushing assembly. Background Art

[0002] A transformer bushing is a device that connects the internal leads of a transformer to the external high-voltage lines, playing roles of mechanical support, current-carrying, sealing, and insulation against the ground. However, due to the different structures and numerous types of transformer bushings, in order to reduce the overall weight of the bushing, the flanges at both ends of the external insulating porcelain jacket may be removed. However, in the case of no bolt connection, in order to ensure the sealing effect of the flange-free porcelain bushing, design considerations need to be made through the pressing force. But in the design and production process, how to press the whole bushing tightly becomes a major problem. Summary of the Invention

[0003] The purpose of the present invention is to provide a transformer bushing assembly tooling, which is simple to operate, has strong versatility, can ensure the pressing effect on the whole bushing, and can improve production efficiency.

[0004] In order to achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0005] A transformer bushing assembly tooling includes a mobile base, and two pairs of support member groups are vertically and symmetrically arranged on the base;

[0006] Two load-bearing members for supporting the bushing flange are horizontally and symmetrically arranged between the two pairs of support member groups, and the load-bearing members are detachably connected to the support member groups;

[0007] A pressing plate for pressing the head of the bushing is also horizontally arranged between the two pairs of support member groups above the load-bearing members. Through holes corresponding to the sinking grooves of the connecting seat of the bushing head are opened on the pressing plate, and one end of the pressing plate is rotatably connected to one of the pairs of support member groups; a limiting rod for abutting against the top surface of the pressing plate to keep the pressing plate horizontal is arranged on the support member group at the other end of the pressing plate, and both ends of the limiting rod are inserted into the adjusting holes on the two support members of the corresponding side support member group;

[0008] A lifting device for pressing the disc spring at the head of the bushing is arranged on the base between the two pairs of support member groups.

[0009] Preferably, the mobile base includes a square frame formed by welding four bottom channel steels, and one end of the four bottom channel steels extends in different directions and universal wheels with braking devices are arranged at the bottom of the ends;

[0010] The two pairs of support member groups are arranged on the square frame, and a bottom plate is arranged on the square frame within the two pairs of support member groups, and the lifting device is arranged on the bottom plate.

[0011] Preferably, a support block is arranged on the bottom plate, and the lifting device is arranged on the top of the support block.

[0012] Preferably, the lifting device is a jack.

[0013] Preferably, each pair of support member groups includes two symmetrically arranged support members, and a plurality of adjustment holes evenly distributed along the length direction of the support member are formed in each support member.

[0014] Preferably, the support member is a channel steel, and the openings of the two channel steels in each pair of support member groups face each other.

[0015] Preferably, a support rod passing through the two bearing members at the same end of the two bearing members is provided, and both ends of the support rod are inserted into the adjustment holes on the two support members of the corresponding side support member group.

[0016] Preferably, one end of the pressing plate is provided with a rotating rod, and both ends of the rotating rod are inserted into the adjustment holes on the two support members of the corresponding side support member group.

[0017] Preferably, a counterweight rod is provided at the end of the pressing plate on the side where the rotating rod is provided.

[0018] The beneficial effects of the present invention are as follows:

[0019] This tooling has a simple structure, is convenient to operate, reduces manpower and shortens the operation time (that is, there is no need for multiple people to tighten bolts); and it can adjust the bearing members and the pressing plate according to different sizes of the casing, with strong versatility. In addition, it can ensure the overall sealing effect of the casing by the acting force of the lifting device, thereby ensuring the stable operation of the casing and the power system. Description of the Drawings

[0020] Figure 1 is a structural schematic diagram of the assembly tooling;

[0021] Figure 2 is a structural schematic diagram of the casing.

[0022] The meanings of the main reference numerals in the drawings are as follows:

[0023] 1. Base, 2. Support member group, 3. Bottom channel steel, 4. Square frame, 5. Universal wheel, 6. Bottom plate, 7. Support member, 8. Adjustment hole, 9. Bearing member, 10. Support rod, 11. Pressing plate, 12. Rotating rod, 13. Limiting rod, 14. Counterweight rod, 15. Lifting device, 16. Support block. Detailed Embodiments

[0024] The present invention will be specifically introduced below with reference to the drawings and embodiments.

[0025] This embodiment provides a transformer bushing assembly tooling, see Figure 1As shown in the figure, it includes a mobile base 1, and two pairs of support member groups 2 are vertically and symmetrically arranged on the base 1; the mobile base 1 includes a square frame 4 formed by welding four bottom channel steels 3, and one end of each of the four bottom channel steels 3 extends in different directions and a universal wheel 5 with a braking device is arranged at the bottom of the end; the two pairs of support member groups 2 are arranged on the square frame 4, and a bottom plate 6 is arranged on the square frame 4 located within the two pairs of support member groups 2.

[0026] Each pair of support member groups 2 includes two symmetrically arranged support members 7, and a number of adjustment holes 8 (the adjustment holes 8 are opened according to the sleeve specifications) are evenly distributed along the length direction of each support member 7. Specifically, the support member 7 is a channel steel, and the openings of the two channel steels in each pair of support member groups 2 face each other.

[0027] Two load-bearing members 9 for supporting the sleeve flange are horizontally and symmetrically arranged between the two pairs of support member groups 2, and the load-bearing members 9 are detachably connected to the support member groups 2; specifically, a support rod 10 that passes through the two load-bearing members 9 at the same end of the two load-bearing members 9 (that is, the support rod 10 is slidably arranged relative to the load-bearing members 9, so that the distance between the two load-bearing members 9 is adjustable), and the two ends of the support rod 10 are inserted into the adjustment holes 8 on the two support members 7 of the corresponding side support member group 2.

[0028] A pressing plate 11 for pressing the head of the sleeve is also horizontally arranged between the two pairs of support member groups 2 above the load-bearing members 9. Through holes corresponding to the sinking grooves on the connecting seat B of the sleeve head are opened on the pressing plate 11, and a number of mounting holes are opened, and one end of the pressing plate 11 is rotatably connected to one of the pairs of support member groups 2; specifically, a rotating rod 12 is arranged at one end of the pressing plate 11, the rotating rod 12 is welded above the pressing plate 11, and a limiting rod 13 for abutting against the top surface of the pressing plate 11 to keep the pressing plate 11 horizontal is arranged on the support member group 2 at the other end of the pressing plate 11. The two ends of the rotating rod 12 and the limiting rod 13 are respectively inserted into the adjustment holes 8 on the two support members 7 of the corresponding side support member group 2. During actual use, the rotating rod 12, the adjustment holes 8 and the support member 7 can all be fixed by bolt assemblies to prevent the pressing plate 11 from shifting in position during assembly. At the same time, a counterweight rod 14 is arranged at the end of the pressing plate 11 where the rotating rod 12 is arranged. This structure enables the end of the pressing plate 11 to sink due to the existence of the counterweight rod 14 after the limiting rod 13 is removed, so it is not necessary to disassemble the whole pressing plate 11.

[0029] A lifting device 15 for pressing the disc spring at the head of the sleeve is arranged on the bottom plate 6 between the two pairs of support member groups 2, and the center line of the lifting device 15 corresponds to the center line of the sleeve. Specifically, the lifting device 15 is a jack. A support block 16 is also arranged on the bottom plate 6, and the jack is arranged on the top of the support block 16.

[0030] The bushing structure is as follows Figure 2 shown. The porcelain bushings at both ends of the bushing do not have flanges. The live metal parts connected to the porcelain bushings are connection seat A and connection seat B respectively. There is a sealing ring 1 between connection seat A and the porcelain bushing. Inside connection seat A, a sealing ring 2, a metal washer, and a disc spring are sequentially installed in a triangular groove. A radial sealing ring 3 is installed between connection seat A and connection seat B. Finally, the bushing is locked by a lock nut. The overall seal of the bushing is ensured by the force of the disc spring.

[0031] The above-mentioned tooling is used to ensure the sealing performance of the bushing and the pressing force of the disc spring under this structure. The overall structure is as follows Figure 1 . During assembly, lock the universal wheel 5. After assembling the parts above the bushing flange according to the above bushing structure, lift the bushing. Using the flange plate of the flange as the support point, place the bushing on the two load-bearing parts 9, and lower the pressing plate 11. Insert the limiting rod 13 into the adjustment hole 8 to ensure that the pressing plate 11 is in a horizontal position. A transition block can be placed between the bushing and the jack as a plane. Place the transition block on the jack. To ensure the seal of the bushing, the operator shakes the actuator shaft of the jack upward to squeeze the bushing in the direction of the pressing plate 11. After pressing according to the process requirements, lock the lock nut through the through hole on the pressing plate 11 to complete the assembly.

[0032] If the size of the bushing is small, a transition plate can also be placed between the top of the bushing and the pressing plate 11. Through holes and mounting holes with the same size as those on the pressing plate 11 are provided on the transition plate, and the transition plate is connected to the pressing plate 11 by bolts. Then lower the pressing plate 11 and operate according to the above steps until the assembly is completed.

[0033] Finally, after the assembly is completed, loosen the jack and remove the limit rod to lift the pressing plate 11, and then lift out the bushing.

[0034] The above is only the preferred embodiment of the present invention patent. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle of the present invention patent, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention patent.

Claims

1. A transformer bushing assembly tool, characterized in that: It comprises a movable base, on which two pairs of support member groups are vertically and symmetrically arranged; Two bearing members for supporting the casing flange are horizontally and symmetrically arranged between the two pairs of supporting member groups, and the bearing members are detachably connected to the supporting member groups; A clamping plate for clamping the casing head is also horizontally arranged between the two pairs of support member groups located above the bearing member, and a through hole corresponding to the sink groove of the casing head coupling seat is opened on the clamping plate, and one end of the clamping plate is rotatably connected to one of the pairs of support member groups; a limiting rod for abutting against the top surface of the clamping plate to keep the clamping plate horizontal is arranged on the support member group at the other end of the clamping plate, and the two ends of the limiting rod are inserted into the adjustment holes on the two support members of the corresponding side support member group; A lifting device for compressing the disc spring at the head of the sleeve is arranged on the base between the two pairs of support components.

2. The transformer bushing assembly tool according to claim 1, characterized in that: The mobile base comprises a square frame formed by welding four bottom channel steels, and one end of the four bottom channel steels extends in different directions and is provided with a universal wheel with a brake device at the bottom of the end; The two pairs of support component groups are arranged on a square frame, and a bottom plate is arranged on the square frame located inside the two pairs of support component groups, and the lifting device is arranged on the bottom plate.

3. The transformer bushing assembly tool according to claim 2, characterized in that: A supporting block is arranged on the bottom plate, and a lifting device is arranged on the top of the supporting block.

4. The transformer bushing assembly tool according to claim 1, characterized in that: The lifting device is a jack.

5. The transformer bushing assembly tool according to claim 1, characterized in that: Each pair of support member groups includes two symmetrically arranged support members, and each support member is provided with a plurality of adjustment holes evenly distributed along the length direction of the support member.

6. The transformer bushing assembly tool according to claim 5, characterized in that: The support members are channel steels, and the openings of the two channel steels in each pair of support member groups are arranged facing each other.

7. The transformer bushing assembly tool according to claim 5, characterized in that: A support rod which simultaneously penetrates the two bearing members is arranged at the same end of the two bearing members, and two ends of the support rod are inserted into the adjustment holes on the two supporting members of the corresponding side supporting member group.

8. The transformer bushing assembly tool according to claim 5, characterized in that: A rotating rod is arranged at one end of the pressing plate, and two ends of the rotating rod are inserted into adjustment holes on two supporting members of the corresponding side supporting member group.

9. The transformer bushing assembly tool according to claim 8, characterized in that: A weight bar is provided at the end of the pressing plate on the side where the rotating rod is provided.

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