Transformer bushing and ascending flanged base module ring type lead screw lifting frame

Abstract

The utility model provides a transformer bushing and ascending flanged base module ring type lead screw lifting frame which comprises an upper ring, a lower ring, supporting legs and lifting lead screws, the upper ring and the lower ring are both of an arc-shaped multi-petal type split structure, a rod body of each lifting lead screw is provided with threads, the upper ring and the lower ring are connected through a plurality of lifting lead screws, and the lifting lead screws are connected through the supporting legs. The upper ring is provided with an upper inner ring and an upper outer ring, a plurality of bolt holes are formed in a ring body of the lower ring, and supporting legs are arranged at the connecting positions of the lower ring and the lifting lead screws. The device is simple in structure and comprehensive in function, successfully solves the technical problem of replacement of bushings and mounting flange sealing elements in closed spaces and various special environments, and can be popularized and applied to related construction operations of underground power station transformers and transformers in other special environments.

Description

Technical Field

[0001] The utility model relates to the technical field of electric power maintenance, in particular to a transformer bushing and a lifting seat module ring-type screw rod lifting frame. Background Art

[0002] Since the main transformers of underground power stations such as Wudongde, Baihetan, Xiluodu and Xiangjiaba Right Bank are arranged in specific closed spaces, it is impossible to use cranes to lift the bushings and mounting flanges, let alone lift the bushings and mounting flanges together. Therefore, the roof lifting point lifting and lowering equipment is generally used. Not only is the operation risk high, the difficulty and workload are large, but also the process quality of seal replacement cannot be guaranteed because the equipment cannot be accurately lifted and lowered in the center. In order to safely and efficiently lift the bushing riser flange and replace the corresponding seals, it is necessary to design a modular annular screw lifting frame to effectively utilize the bushing riser's own fixing bolts, mounting flange ears, and bushing flange lifting and corresponding flanges, and replace the corresponding seals.

[0003] Therefore, there is an urgent need for a transformer bushing and a lifting seat module ring-type screw lifting frame to solve the above problems. Summary of the invention

[0004] The purpose of the utility model is to overcome the above-mentioned shortcomings and provide a transformer bushing and a lifting seat module ring-type screw rod lifting frame to solve the problems raised in the background technology.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions: a transformer bushing and elevation seat module ring-type screw lifting frame, comprising an upper ring, a lower ring, a leg and a lifting screw, the upper ring and the lower ring are both arc-shaped multi-petal split structures, the lifting screw rod body is provided with a thread, the upper ring and the lower ring are connected by a plurality of lifting screws, the upper ring is provided with an upper inner ring and an upper outer ring, the lower ring body is provided with a plurality of bolt holes, and legs are provided at the connection between the lower ring and the lifting screw.

[0006] Preferably, a ring-type hand crank is provided at the connection between the upper outer ring and the lifting screw rod. The ring-type hand crank is connected to the lifting screw rod through threads and can be raised and lowered by hand rotation. A flange ear is provided at the center of the upper outer ring, and bolt holes are provided at both ends of the upper outer ring body. The upper outer ring and the upper inner ring are not arranged at the same horizontal height, and the upper outer ring and the upper inner ring are fixedly connected by a trapezoidal structural plate.

[0007] Preferably, the connecting end of the lifting screw rod and the supporting leg is set to be spherical, and the lifting screw rod is sleeved in the inner cavity of the supporting leg.

[0008] The utility model has the following beneficial effects:

[0009] 1. The utility model is easy to disassemble and assemble. The relevant fixing bolts, lifting ears, flange lifts, etc. of the equipment can be used to lift and lower the casing and the corresponding mounting flange. This method can accurately lift and lower the equipment in the center. The modular ring screw lifting frame can be used to lift and lower the casing and the corresponding mounting flange separately, and can also lift and lower the SF6 casing and other small and medium-sized casings, and can prevent the equipment from shaking, ensuring the quality of the replacement of the corresponding seals.

[0010] 2. The utility model occupies a small space and has adjustable size, and can make full use of the on-site space for construction operations. It does not require roof hanging points, nor does it need to set up high-altitude maintenance racks, thereby greatly reducing the operation risk and workload. The jacking method successfully solves the technical difficulties of replacing casings and mounting flange seals in closed spaces and various special environments, and can be promoted and applied to related construction operations of underground power station transformers and transformers in other special environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0012] Figure 2 This is a schematic diagram of the working connection of the utility model. DETAILED DESCRIPTION

[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0014] See also Figure 1 to Figure 2 A transformer bushing and a lifting seat modular ring screw lifting frame, comprising an upper ring 1, a lower ring 2, a leg 3 and a lifting screw 4, wherein the upper ring 1 and the lower ring 2 are both arc-shaped multi-petal split structures, the lifting screw 4 has a threaded rod, the upper ring 1 is connected to the lower ring 2 through a plurality of lifting screws 4, the upper ring 1 is provided with an upper inner ring 1.1 and an upper outer ring 1.2, the lower ring 2 is provided with a plurality of bolt holes 2.1, and the connection between the lower ring 2 and the lifting screw 4 is provided with a leg 3. The utility model is convenient for disassembly and assembly, and the bushing and the corresponding mounting flange can be lifted and lowered by using the equipment-related fixing bolts, lifting ears, flange lifts, etc. The method can be used to lift the equipment in the center accurately, and the modular ring screw lifting frame can be used to lift and lower the bushing and the corresponding mounting flange separately, and can also lift and lower the SF6 bushing and other small and medium-sized bushings, and can prevent the equipment from shaking, and ensure the quality of the replacement of the corresponding seals.

[0015] Preferably, a ring-type hand crank 4.1 is provided at the connection between the upper outer ring 1.2 and the lifting screw rod 4, and the ring-type hand crank 4.1 is connected to the lifting screw rod 4 by threads, and can be lifted and lowered by hand rotation, a flange ear 1.2.1 is provided at the center of the upper outer ring 1.2, and bolt holes 1.2.2 are provided at both ends of the ring body of the upper outer ring 1.2. The upper outer ring 1.2 and the upper inner ring 1.1 are not arranged at the same horizontal height, and the upper outer ring 1.2 and the upper inner ring 1.1 are fixedly connected by a trapezoidal structural plate. The setting of the ring-type hand crank 4.1 can play a supporting role and also play a role in adjusting the lifting height.

[0016] Preferably, the connecting end of the lifting screw rod 4 and the leg 3 is set to be spherical, and the lifting screw rod 4 is sleeved in the inner cavity of the leg 3. This design can make the device applicable to more scenes, not only in the working scene where the action surface is a horizontal plane, but also in the inclined plane, further expanding the working environment.

[0017] The working principle of this embodiment is as follows:

[0018] When the utility model is needed to work and lift the equipment, its lower ring 2 is fixed to the upper end of the lifting seat by multiple bolts, the upper inner ring 1.1 of the upper ring 1 is fixed to the lifting ear of the sleeve flange or the sleeve mounting flange by a connecting piece, and two to four lifting screws 4 are connected between the two upper outer rings 1.2 to lift the sleeve or the mounting flange.

[0019] If it is necessary to lift the flange of the lifting seat, install the double-ring module lifting frame on the relevant lifting seat through the lifting screw 4, remove the corresponding bolts, and then synchronously lift the flange to about 10cm through the screw, replace the corresponding seal, and then synchronously drop the flange through the screw. This process can be carried out together with the casing. If it is necessary to lift the SF6 casing or other casing, first install the double-ring module lifting frame on the relevant lifting seat through the lifting screw 4, remove the corresponding bolts, and then synchronously lift the casing to about 10cm through the lifting screw 4, and then synchronously drop the casing through the lifting screw 4 after replacing the corresponding seal.

[0020] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limitations of the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A transformer bushing and lifting seat module ring-type screw lifting frame, comprising an upper ring (1), a lower ring (2), a leg (3) and a lifting screw (4), characterized in that: The upper ring (1) and the lower ring (2) are both arc-shaped multi-petal split structures, the lifting screw rod (4) is provided with a threaded rod, the upper ring (1) and the lower ring (2) are connected via a plurality of lifting screw rods (4), the upper ring (1) is provided with an upper inner ring (1.1) and an upper outer ring (1.2), the lower ring (2) is provided with a plurality of bolt holes (2.1), and legs (3) are provided at the connection between the lower ring (2) and the lifting screw rod (4).

2. A transformer bushing and riser module ring-type screw lifting frame according to claim 1, characterized in that: A ring-type hand crank (4.1) is provided at the connection between the upper outer ring (1.2) and the lifting screw rod (4); the ring-type hand crank (4.1) is connected to the lifting screw rod (4) by threads and can be raised and lowered by manual rotation; a flange ear (1.2.1) is provided at the center of the upper outer ring (1.2); bolt holes (1.2.2) are provided at both ends of the ring body of the upper outer ring (1.2); the upper outer ring (1.2) and the upper inner ring (1.1) are not arranged at the same horizontal height; the upper outer ring (1.2) and the upper inner ring (1.1) are fixedly connected by a trapezoidal structural plate (1.3).

3. A transformer bushing and riser module ring-type screw lifting frame according to claim 1, characterized in that: The connecting end of the lifting screw rod (4) and the supporting leg (3) is configured to be spherical, and the lifting screw rod (4) is sleeved in the inner cavity of the supporting leg (3).

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