CN202025638U - Suspension frame for on-load voltage regulation switch of transformer - Google Patents

Abstract

The utility model discloses a suspension frame for an on-load voltage regulation switch of a transformer. The suspension frame comprises a base, a vertical post, a cross beam and a suspension ring device, wherein one end of the vertical post is fixedly connected with the base, and the other end of the vertical post is rotatably connected with the middle part of the cross beam; and the suspension ring device is suspended on one side of the cross beam. The suspension frame is temporarily fixed by taking a flange on the existing on-load voltage regulation switch as a base of the suspension frame, and the suspension frame is connected firmly with the flange by bolts. A prop is then fixed on the base, and a rotatable type adjustable cross beam is arranged at the upper part of the prop. An adjustable suspension ring equipped on the cross beam is matched with a chain block and a special lifting hook so as to align the gravity center and ensure the stability of the hoisting work, so that the structure is simple and the operation is easy.

Description

Transformer on-load tap changer lifting frame

technical field

The utility model relates to the field of transformers, in particular to a hoisting frame for an on-load voltage regulating switch of a transformer.

Background technique

When the on-load tap changer of the transformer is working, the core of the on-load tap changer needs to be hoisted out for test inspection, maintenance and cleaning, and then reassembled. Because the internal structure of the on-load tap changer is very precise and compact, it is necessary to hang the core of the on-load tap changer Care must be taken during unloading and reinstalling to avoid damage to the switch due to collision between the contact fingers and the contacts of the insulating barrel. The existing hoisting work of the on-load tap changer core is often completed by the cooperation of a crane and a chain block. Due to the poor stability of the crane, it is difficult to align the crane hook with the switch center, and the boom rope is affected by external influences, etc. Factors will have a certain impact on the hoisting work of the on-load tap changer core, and even the contact of the on-load tap changer has been stuck and deformed during the hoisting process due to the poor stability of the crane, causing undue losses and giving The maintenance work brings great difficulties and delays the power transmission time, which brings inconvenience to power users and also causes inestimable economic losses. Moreover, since this work is carried out on-site in the substation, surrounded by high-voltage live equipment, the operation The environment is complex and the crane operation is very dangerous.

It is difficult to grasp the stability of the hoisting work of the on-load tap changer core by using a crane and a chain hoist; it is difficult to align the crane hook with the switch center; not only the stability is difficult to control, but also the cost of renting a crane is high, and the work site is limited More importantly, it is easy to cause equipment damage accidents and cause unnecessary economic losses.

Utility model content

The utility model aims at the deficiencies of the above-mentioned prior art, and provides a hoisting frame for a transformer on-load tap changer, which ensures the stability of the hoisting work, and has a simple structure and is easy to operate.

In order to solve the above-mentioned technical problems, the utility model adopts the following technical scheme: a hoisting frame for a transformer on-load tap changer, including a base, a column, a beam and a ring device, one end of the column is fixedly connected to the base, and the other end is connected to the middle of the beam Swivel connection; the suspension ring device is suspended on one side of the beam.

Preferably, the suspension frame further includes a rotary support, the lower part of the rotary support is fixedly connected to the other end of the column, and the beam is connected to the upper part of the rotary support.

Preferably, the rotary support is a force-bearing bearing.

Preferably, the beam is connected to the upper part of the rotary support in a sliding manner.

Preferably, the suspension frame includes a limiting device, which is arranged on the other side of the beam to limit the sliding distance of the beam on the rotary support.

Preferably, the lifting ring device includes a lifting ring and a lifter, the lifting ring is suspended on the beam, and the lifting device is fixedly connected with the lifting ring.

Preferably, the lifter is a lever block.

Compared with the prior art, the hoisting frame of the transformer on-load tap changer of the utility model is temporarily fixed by the flange on the existing on-load tap changer as the base of the hoisting frame, and the hoisting frame is firmly connected with it by bolts. Then the pillar is fixed on the base, and the upper part of the pillar is equipped with a rotary adjustable beam. The beam is equipped with adjustable lifting rings to cooperate with chain hoists and special hooks to ensure that its center of gravity is aligned and the stability of hoisting work is ensured. The structure is simple and easy to operate. The beam can be disassembled freely when not working, which is convenient for storage.

Since the hoisting frame of the utility model is fixed on the existing on-load tap changer, it solves the instability of the hoisting work of the on-load tap-changer core and the limitations of the work site, and avoids equipment damage accidents. The pressure switch lifting bracket is flexible, convenient, applicable, safe, stable and easy to operate. It saves manpower and material resources and has good economic benefits.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Explanation of reference signs:

1 - Base;

2-column;

3-rotary support;

4- limit nail;

5 - Beam;

6-rings;

7- Lever block.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

As shown in Figure 1, a transformer OLTC hoisting frame includes a base 1, a column 2, a rotary support 3, a beam 5, a limit nail 4, a lifting ring 6 and a lever block 7, and one end of the column 2 It is fixedly connected with the base 1, and the other end is rotatably connected with the middle part of the beam 5; the lower part of the rotary support 3 is fixedly connected with the other end of the column 2, and the beam 5 is connected with the upper part of the rotary support 3, and it is a sliding connection, and the limit The nail 4 is arranged on the other side of the beam 5 to limit the sliding distance of the beam 5 on the rotary support 3 . The suspension ring 6 is suspended on the beam 5, and the lever hoist 7 is fixedly connected with the suspension ring 6.

in:

The base 1 is designed according to the upper cover structure of the existing on-load tap changer, and the base 1 of the hoisting frame is fixed on the upper cover by the upper cover bolts, so that it is fixed firmly.

The column 2 is firmly connected with the base 1 to support the beam 5 and other spreaders, and provide lifting force, so the column 2 is made of high-strength thick-walled steel pipe.

The rotary support 3 is detachable, and the rotary support 3 is a load-bearing bearing, the lower part of which is connected to the column 2 and can rotate around the axis of the column 2; the upper part of the bearing is connected with the crossbeam with guide rollers to facilitate the stretching of the crossbeam sports.

The front part of the crossbeam 5 is equipped with a ring device for lifting. The crossbeam 5 can be stretched linearly along the axis of the crossbeam 5 through the rotating support 3 to adjust the lifting center position, and at the same time, the lifted object can be sent out a certain distance. ,convenience to work.

The limit nail 4 is used as the limit of the maximum moving distance of the crossbeam 5 sliding.

The suspension ring 6 is hung on the front portion of the crossbeam 5 and is used in cooperation with the small lifter, such as the lever hoist 7, to complete the lifting work of the on-load tap changer core.

The detachable hoisting frame made by using the upper part of the on-load tap changer is flexible, convenient, applicable, easy to operate and stable, and can be hoisted by one person independently, saving manpower and material resources, and has good economic benefits.

The above is only a preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made, these improvements and Retouching should also be regarded as the scope of protection of the present utility model.

Claims (7)

1. on-load tap-changer of transformer mast-up, it is characterized in that: include base, column, crossbeam and suspension ring device, described column one end is fixedlyed connected with base, and the other end is rotatably connected with the crossbeam middle part; Described suspension ring device is suspended on a side of crossbeam.

2. mast-up as claimed in claim 1 is characterized in that: this mast-up also comprises rotary bearing, and described rotary bearing bottom is fixedly connected on the other end of column, and described crossbeam is connected with rotary bearing top.

3. mast-up as claimed in claim 2 is characterized in that: described rotary bearing is the load bearing.

4. mast-up as claimed in claim 2 is characterized in that: described crossbeam is that slidingtype is connected with the top of rotary bearing.

5. mast-up as claimed in claim 4 is characterized in that: this mast-up includes stopping means, and described stopping means is located at the opposite side of crossbeam, the sliding distance of restriction crossbeam on rotary bearing.

6. mast-up as claimed in claim 1 is characterized in that: described suspension ring device comprises suspension ring and landing device, and described suspension ring are suspended on the crossbeam, and described landing device is fixedlyed connected with suspension ring.

7. mast-up as claimed in claim 6 is characterized in that: described landing device is a Lever Blocks.

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