A transformer bushing assembly tool

Abstract

The application discloses a transformer bushing assembling tool, which comprises a movable base, two pairs of support groups are vertically and symmetrically arranged on the base, two bearing pieces for supporting the flanges of the bushing are horizontally and symmetrically arranged between the two pairs of support groups, a pressing plate for pressing the head of the bushing is horizontally arranged between the two pairs of support groups above the bearing pieces, one end of the pressing plate is rotationally connected with one of the two pairs of support 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 group at the other end of the pressing plate, the two ends of the limiting rod are inserted into the adjusting holes in the two support pieces of the corresponding side support group, and a lifting device for pressing the disc spring of the head of the bushing is arranged on the base between the two pairs of support groups. The assembling tool is simple to operate, has high universality, can guarantee the pressing effect on the whole bushing and can improve the production efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to a transformer bushing assembly tool, belonging to the technical field of bushing assembly. BACKGROUND

[0002] The transformer bushing is a device for connecting the internal lead of the transformer to the external high-voltage line, which plays a mechanical support, current-carrying, sealing and ground insulation role. However, the structure of the transformer bushing is different, and there are many types. In order to reduce the overall weight of the bushing, the flanges at both ends of the outer insulating porcelain sleeve are removed. However, in the case of no bolt connection, in order to ensure the sealing effect of the flange porcelain sleeve, the compression force needs to be considered in the design. However, in the process of design and production, how to compress the whole bushing becomes a big problem. SUMMARY

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

[0004] In order to achieve the above purpose, the technical scheme adopted by the present application is:

[0005] A transformer bushing assembly tool, comprising a movable base, two pairs of support piece groups are vertically and symmetrically arranged on the base;

[0006] Two load-bearing pieces for supporting the flanges of the bushing are horizontally and symmetrically arranged between the two pairs of support piece groups, and the load-bearing pieces are detachably connected with the support piece groups;

[0007] A compression plate for compressing the head of the bushing is also horizontally arranged between the two pairs of support piece groups above the load-bearing pieces, the compression plate is provided with through holes corresponding to the sink holes of the coupling seat of the head of the bushing, and one end of the compression plate is rotatably connected with one pair of support piece groups; a limiting rod for abutting against the top surface of the compression plate to keep the compression plate horizontal is arranged on the support piece group at the other end of the compression plate, and the two ends of the limiting rod are inserted into the adjusting holes in the two support pieces of the corresponding side support piece group;

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

[0009] Preferably, the movable 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 at the bottom of the end with a universal wheel with a brake device;

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

[0011] Preferably, a support block is arranged on the base 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 piece groups comprises two symmetrically arranged support pieces, and a plurality of adjusting holes are arranged on each support piece in a uniform manner along the length direction of the support piece.

[0014] Preferably, the support pieces are channel steels, and the openings of the two channel steels in each pair of support piece groups are arranged in opposite directions.

[0015] Preferably, a support rod is arranged at the same end of the two bearing pieces and penetrates through the two bearing pieces, and the two ends of the support rod are inserted into the adjusting holes on the two support pieces of the corresponding side support piece group.

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

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

[0018] The beneficial effects of the present application are:

[0019] The tooling has the advantages of simple structure, convenient operation, reduced labor and shortened operation time (i.e. without the need for multiple people to tighten the bolts), can adjust the bearing pieces and the pressing plate according to the size of the sleeve, has strong versatility, and can also ensure the overall sealing effect of the sleeve by the acting force of the lifting device, thereby ensuring the stable operation of the sleeve and the power system. BRIEF DESCRIPTION OF DRAWINGS

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

[0021] Figure 2 is a structural schematic view of the sleeve.

[0022] The main reference signs in the drawings have the following meanings:

[0023] 1, base, 2, support piece group, 3, bottom channel steel, 4, square frame, 5, universal wheel, 6, base plate, 7, support piece, 8, adjusting hole, 9, bearing piece, 10, support rod, 11, pressing plate, 12, rotating rod, 13, limiting rod, 14, counterweight rod, 15, lifting device, 16, support block. DETAILED DESCRIPTION

[0024] The present application will be specifically described below in combination with the drawings and examples.

[0025] The present embodiment provides a transformer sleeve assembly tooling, referring to Figure 1As shown, the device comprises a mobile base 1, on which two pairs of support groups 2 are vertically and symmetrically arranged; the mobile base 1 comprises a square frame 4 formed by four bottom channel steels 3, one end of which extends in different directions and is provided with universal wheels 5 with brake devices at the bottom end; the two pairs of support groups 2 are arranged on the square frame 4, and a bottom plate 6 is arranged on the square frame 4 between the two pairs of support groups 2.

[0026] Each pair of support groups 2 comprises two symmetrically arranged support steels 7, on each of which a plurality of adjusting holes 8 (the adjusting holes 8 are arranged according to the specifications of the sleeve) are uniformly distributed along the length direction of the support steel 7. Specifically, the support steel 7 is a channel steel, and the openings of the two channel steels in each pair of support groups 2 are oppositely arranged.

[0027] Two load-bearing members 9 for supporting the flanges of the sleeve are horizontally and symmetrically arranged between the two pairs of support groups 2, and the load-bearing members 9 are detachably connected with the support groups 2; specifically, a support rod 10 that penetrates through both load-bearing members 9 is arranged at the same end of the two load-bearing members 9 (i.e., the support rod 10 is arranged in sliding connection with the load-bearing members 9, so that the distance between the two load-bearing members 9 can be adjusted), and both ends of the support rod 10 are inserted into the adjusting holes 8 on the two support steels 7 of the corresponding side support group 2.

[0028] A pressing plate 11 for pressing the head of the sleeve is also horizontally arranged between the two pairs of support groups 2 above the load-bearing members 9, the pressing plate 11 is provided with through holes corresponding to the recesses on the sleeve head coupling seat B and a plurality of mounting holes, and one end of the pressing plate 11 is rotatably connected with one of the pairs of support groups 2; specifically, one end of the pressing plate 11 is provided with a rotating rod 12, which is welded to the upper side of the pressing plate 11, and the support group 2 at the other end of the pressing plate 11 is provided with a limiting rod 13 for abutting against the top surface of the pressing plate 11 to keep the pressing plate 11 horizontal, both ends of the rotating rod 12 and the limiting rod 13 are inserted into the adjusting holes 8 on the two support steels 7 of the corresponding side support group 2, and in actual use, the rotating rod 12 and the adjusting holes 8 and the support steels 7 can be fixed by bolt assemblies to prevent the position of the pressing plate 11 from shifting during assembly. At the same time, a counterweight rod 14 is arranged at the end of the pressing plate 11 provided with the rotating rod 12. This structure allows the end of the pressing plate 11 to sink due to the presence of the counterweight rod 14 after the limiting rod 13 is removed, so the pressing plate 11 does not need to be completely disassembled.

[0029] A lifting device 15 for pressing the disc spring of the head of the sleeve is arranged on the bottom plate 6 between the two pairs of support 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 sleeve structure is shown in Figure 2 The porcelain sleeve of the sleeve has no flange at both ends, and the live metal parts connected with the porcelain sleeve are respectively a connecting seat A and a connecting seat B. A sealing ring one is arranged between the connecting seat A and the porcelain sleeve. A sealing ring two, a metal washer, and a disc spring are sequentially arranged in a triangular groove in the connecting seat A. A radial sealing ring three is arranged between the connecting seat A and the connecting seat B. Finally, the sleeve is locked by a lock nut, and the overall sealing of the sleeve is ensured by the force of the disc spring.

[0031] The above tool is used to ensure the sealing of the sleeve and the compression force of the disc spring under the structure, and the overall structure is shown in Figure 1 During assembly, the universal wheel 5 is locked, and the parts above the flange of the sleeve are assembled according to the above sleeve structure. Then, the sleeve is lifted, the sleeve is placed on the two bearing parts 9 with the flange plate of the flange as the supporting point, the pressing plate 11 is lowered, the limiting rod 13 is inserted into the adjusting hole 8 to ensure that the pressing plate 11 is in a horizontal position, and a transition block is placed between the sleeve and the jack as a plane. To ensure the sealing of the sleeve, the operator shakes the actuating shaft of the jack upward to extrude the sleeve in the direction of the pressing plate 11. After the sleeve is compressed according to the process requirements, the lock nut is locked through the through hole on the pressing plate 11, and the assembly is completed.

[0032] If the size of the sleeve is small, a transition plate can also be placed between the top of the sleeve and the pressing plate 11. The transition plate is provided with through holes and mounting holes of the same size as those on the pressing plate 11, and the transition plate is connected with the pressing plate 11 through bolts. Then, the pressing plate 11 is lowered, and the above steps are operated until the assembly is completed.

[0033] Finally, the jack is loosened after the assembly is completed, the limiting rod is removed, the pressing plate 11 is lifted, and the sleeve is lifted out.

[0034] The above is only a preferred embodiment of the present patent, and it should be noted that ordinary technical personnel in the technical field can make several improvements and refinements without departing from the principles of the present patent. These improvements and refinements should also be considered within the protection scope of the present patent.

Claims

1. A transformer bushing assembly fixture, characterized in that, It includes a movable base, on which two pairs of support components are vertically and symmetrically arranged; Two load-bearing members for supporting the sleeve flange are horizontally and symmetrically arranged between the two pairs of support groups. The load-bearing members are detachably connected to the support groups. A clamping plate for clamping the sleeve head is horizontally arranged between the two pairs of support members located above the bearing member. The clamping plate has a through hole corresponding to the groove of the sleeve head connecting seat, and one end of the clamping plate is rotatably connected to one of the pairs of support members. The other end of the clamping plate has a limiting rod for abutting against the top surface of the clamping plate to keep the clamping plate horizontal. 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 pressing the disc spring at the sleeve head is provided on the base located between the two pairs of support groups. Each pair of support components includes two symmetrically arranged support components, and each support component has several adjustment holes evenly distributed along the length of the support component. One end of the clamping plate is equipped 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 assembly.

2. The transformer bushing assembly fixture according to claim 1, characterized in that, The mobile base includes a square frame formed by welding four bottom channel steels, with one end of each of the four bottom channel steels extending in different directions and having a universal wheel with a brake device at the bottom of the end. Two pairs of support components are mounted on a square frame, and a base plate is mounted on the square frame located within the two pairs of support components. The lifting device is mounted on the base plate.

3. The transformer bushing assembly fixture according to claim 2, characterized in that, A support block is provided on the base plate, and a lifting device is located on top of the support block.

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

5. The transformer bushing assembly fixture according to claim 1, characterized in that, The support is made of channel steel, and the openings of the two channel steels in each pair of support sets face each other.

6. The transformer bushing assembly fixture according to claim 1, characterized in that, A support rod is provided at the same end of the two bearing members, which passes through the two bearing members simultaneously. The two ends of the support rod are inserted into the adjustment holes on the two supporting members of the corresponding side support member group.

7. The transformer bushing assembly fixture according to claim 1, characterized in that, A counterweight is provided at the end of the clamping plate on the side with the rotating rod.

Images