CN201817223U - Suspension device for on-load tapping switches of transformers - Google Patents

Abstract

The utility model discloses a transformer on-load tap changer hoisting device, which comprises a base, on which a suspender rod with a rope is vertically arranged, one end of the rope is connected with a lifter, and the other end is connected with a hook, Outriggers are arranged horizontally on the sides, and the outriggers are hinged to the base, and fixed connection devices are arranged on the outriggers. The utility model is a transformer M-type on-load tap changer hoisting device with light weight, compact structure, portability, convenient adjustment and less maintenance.

Description

Transformer on-load tap-changer hoist

technical field

The utility model relates to a hoist for a transformer on-load tap changer, in particular to a hoist for an M-type on-load tap changer. the

Background technique

In the power system, more and more on-load tap-changers are used for transformers of 110kV and above, and on-load tap-changers play an important role in improving the voltage qualification rate of the power supply system. There are also more maintenance of on-load tap-changers. There are two main methods for hoisting on-load tap-changers, one is to use a crane, and the other is to lift manually. The cost of using a crane is relatively high, and manual lifting is unstable and easy to damage the switch. the

Utility model content

The purpose of the utility model is to provide a transformer M-type on-load tap-changer hoisting device with light weight, compact structure, portability, convenient adjustment and less maintenance. the

In order to achieve the above purpose, the utility model adopts the following technical scheme: a hoisting device for transformer on-load tap changer, including a base on which a suspender with a rope is vertically arranged, one end of the rope is connected with the lifter, and the other end is connected with the The hooks are connected, the side of the base is provided with outriggers horizontally, the outriggers are hinged with the base, and the outriggers are provided with fixed connection devices. the

The supporting leg is in the shape of a semi-circular plate, and one end is hinged to the base through a rotating shaft, and the other end of the supporting leg is provided with a fixed connection device. the

There are two legs. the

The fixed connection device is a fixed plate hinged with the legs, the part of the fixed plate protruding out of the legs is provided with a connection hole for connecting with the on-load tap changer, and the two fixed plates on the two legs are oppositely arranged ; The side of the upper surface of the base facing the leg is also hinged with a fixing plate, and the part of the fixing plate protruding from the base is also provided with a connecting hole for connecting with the on-load tap changer. the

The base is 30-40mm high. the

A hollow support frame is fixed vertically on the base, and the root of the boom is inserted into the bearing in the support frame. the

A locking bolt is horizontally installed on the outer wall of the support frame, the nut of the locking bolt is located outside the support frame, and the front end of the locking bolt is offset against the outer wall of the suspender. the

Pulleys are arranged at intervals on the suspenders, and the ropes are wound on the pulleys; the lifter is arranged on the suspenders above the supporting frame. the

The diameter of the circle formed by the relative arrangement of the two legs is 700mm-800mm. the

The connecting hole of the fixing plate is oblong. the

When the utility model is in use, the fixed cover plate of the transformer M-type on-load tap-changer can be connected to the leg and the base through the fixed plate. The specific steps are: first remove a bolt of the on-load tap-changer, Then it can be bolted to the connecting hole 14 through the bolt hole. Then connect the inner core of the M-type on-load tap-changer with the hook, and turn the lifter to easily lift the inner core of the M-type on-load tap-changer. The boom can rotate in the support frame, and when the locking bolt is tightened, the friction between the locking bolt and the boom can prevent the boom from rotating, and vice versa. The height of the base is 30-40mm, which is the same as the height of the fixed cover plate of the on-load switch, which is convenient for the fixed plate to be connected to the bolts of the fixed cover plate of the on-load switch. The two semicircular supporting legs can rotate around the rotating shaft, so the two supporting legs can be opened and closed, and are suitable for connecting various types of on-load switch cover plates, and the switch is fixed on the cover plate bolts. The beneficial effects of the utility model are: light weight, compact structure, easy to carry, easy to adjust, less maintenance, it is a special hoist for transformer on-load tap changer, which reduces the cost compared with using a crane, and compared with manual construction , improving work efficiency and safety. the

Description of drawings

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

Fig. 2 is a view from the direction A shown in Fig. 1 . the

Detailed ways

A transformer on-load tap-changer hoist shown in Fig. 1 and Fig. 2 includes a base 9 with a height α of 30mm and a vertical suspension rod 4. The top of the suspension rod 4 is a cross bar 4', and the base 9 A hollow columnar support frame 7 is fixed vertically on the top, and the root of the boom 4 is inserted into the bearing 6 in the support frame 7. The outer wall of the support frame 7 is horizontally equipped with locking bolts 8, and the nuts of the locking bolts 8 Located outside the support frame 7, the front end of the locking bolt 8 is against the outer wall of the suspender 4, and the outer wall of the support frame 7 is provided with reinforcing plates 15, and four of them are relatively arranged. Pulleys 2 are arranged at intervals on the boom 4, and ropes 3 are wound on the pulleys 2. The bottom end of the rope 3 is connected to the lifter 5, and the top end is connected to the hook 1. The lifter 5 is arranged on the top of the support frame 7. On the suspension rod 4, the lifter 5 is a manual lifter or an electric lifter (the lifter 5 is the prior art so it is not described in detail). The side of the base 9 is provided with two half-circular plate-shaped legs 10 in the transverse direction. The two legs 10 are arranged symmetrically and have opposite openings. The diameter β of the circle formed by the opposite arrangement of the two legs 10 is 700mm-800mm. One end of the support leg 10 is hinged to the base 9 through a rotating shaft 11, and the other end of the support leg 10 is provided with a fixed connection device. The fixed connection device is a fixed plate 13 hinged with the legs 10, and the part protruding from the legs on the fixed plate 13 is provided with an oblong connecting hole 14 for connecting with the on-load tap changer. The two fixed plates 13 on the base 10 are arranged oppositely; the side of the base 9 upper surface facing the legs 10 is also hinged with a fixed plate 12, and the part of the fixed plate 12 on the base 9 extending out of the base 9 is also provided for connecting with the loaded The oblong connecting hole 14 for tap changer connection. the

When the utility model is in use, the cover plate base of the transformer M-type on-load tap-changer can be connected to the base 9 through the fixing plate 12. The specific steps are: first disassemble one of the cover plate bases of the on-load tap-changer Bolts can be bolted to the connecting holes 14 of the fixing plate 12 through the bolt holes. Then support leg 10 is moved close to the cover plate base, and two bolts on the cover plate base are removed, and the bolt hole is connected with the connecting hole 14 bolts of the fixed plate 13, after the base 9 and the support leg 10 are fixed, Insert the boom 4 into the bearing 6, tighten the locking bolt 8, connect the inner core of the M-type on-load tap-changer with the hook 1, and turn the lifter 5 to easily lift the inner core of the M-type on-load tap-changer . The suspension rod 4 can rotate in the support frame 7, and the frictional force between the locking bolt 8 and the suspension rod 4 can prevent the suspension rod 4 from rotating, and vice versa. The semicircular support legs 10 are all rotatable around the rotating shaft 11, and the two support legs 10 can be opened and closed, and are suitable for connecting various types of on-load tap changer cover plate base bolts. the

Claims (10)

1. A lifting device for a transformer on-load tap changer, comprising a base, on which a suspension rod with a rope is vertically arranged, one end of the rope is connected with the lifter, and the other end is connected with the suspension hook, and it is characterized in that: the base Outriggers are arranged horizontally on the sides, and the outriggers are hinged to the base, and fixed connection devices are arranged on the outriggers. 2. The hoisting device for transformer on-load tap changer according to claim 1, characterized in that: the supporting leg is in the shape of a semi-circular plate, and one end is hinged to the base through a rotating shaft, and the other end of the supporting leg is provided with a fixed connection device . 3. The hanger for transformer on-load tap changer according to claim 2, characterized in that there are two supporting legs. 4. The transformer on-load tap-changer hoist according to any one of claims 1-3, characterized in that: the fixed connection device is a fixed plate hinged with the legs, and the legs protrude from the fixed plate The outer part is provided with a connection hole for connection with the on-load tap-changer, and the two fixing plates on the two legs are oppositely arranged; the side of the upper surface of the base facing the legs is also hinged with a fixing plate, and the fixing plate protrudes from the base The part also has connection holes for connection with on-load tap-changer. 5. The hanger for transformer on-load tap changer according to claim 4, characterized in that: the height of the base is 30-40mm. 6. The hanger for transformer on-load tap changer according to claim 5, characterized in that: a hollow support frame is vertically fixed on the base, and the root of the suspender rod is inserted into the bearing in the support frame. 7. The hoisting device for transformer on-load tap changer as claimed in claim 6, characterized in that: the outer wall of the supporting frame is equipped with locking bolts transversely, the nuts of the locking bolts are located outside the supporting frame, and the front ends of the locking bolts are in contact with the supporting frame. The outer walls of the suspenders are offset. 8. The hoisting device for transformer on-load tap changer according to claim 7, characterized in that: pulleys are arranged at intervals on the suspenders, and the ropes are wound on the pulleys; the lifter is arranged on the suspenders above the supporting frame. 9. The hanger for transformer on-load tap changer according to claim 8, characterized in that: the diameter of the circle formed by the two opposite legs is 700mm-800mm. 10. The hanger for transformer on-load tap changer according to claim 9, characterized in that: the connecting hole of the fixing plate is oblong. the

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