Easily-assembled intermediate shaft for tap selector

Abstract

The utility model relates to the technical field of intermediate shafts, in particular to an easy-to-assemble intermediate shaft for a tap selector, which mainly comprises an intermediate shaft, an upper insulating cylinder, a lower insulating cylinder, a contact ring, a connecting mechanism and a fixing mechanism, wherein the upper insulating cylinder is arranged on the outer side of the intermediate shaft, the contact ring is arranged below the upper insulating cylinder, the connecting mechanism is arranged above the lower insulating cylinder, and the fixing mechanism is arranged above the contact ring. And the insulating sleeves are arranged in the upper insulating cylinder and the lower insulating cylinder. An upper insulating cylinder and a lower insulating cylinder are fixedly supported through a round sleeve and a supporting plate, the round sleeve and a convex sleeve are connected to the outer wall of an intermediate shaft in a sleeving mode, the inner wall of a limiting groove is connected to the side face of a limiting block in a sleeving mode, the limiting block limits the convex sleeve and the round sleeve, the convex sleeve and the limiting block are fixed through a bolt, and meanwhile a fixing plate and the limiting block are fixed through a screw. Due to the fact that the protruding sleeve and the fixing plate are fixed to the limiting block through the bolt and the screw respectively, when equipment breaks down, a large amount of time and energy do not need to be spent on disassembly, and the maintenance efficiency is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of intermediate shafts, in particular to an easy-to-assemble intermediate shaft for a tap selector. Background Art

[0002] The tap selector intermediate shaft is a key component in on-load tap changers in power systems. Located inside the tap selector, it supports the insulating cylinder and drives the moving contacts (or sliding contact rings) to perform precise positional movements within the tap selector. These movements allow the transformer to switch between different voltage tap positions to adjust the output voltage without interrupting the load current.

[0003] In existing tap selectors, an intermediate shaft and an insulating cylinder are typically connected and fixed. This connection method primarily involves fixing the insulating cylinder to a sleeve and then sleeved onto the outer wall of the intermediate shaft. However, when a device malfunctions, since the insulating cylinder is fixed to the intermediate shaft via the sleeve, when the insulating cylinder needs to be removed for maintenance, this fixing method makes the connection between the insulating cylinder and the intermediate shaft very tight and difficult to loosen. This often requires a significant amount of time and effort to disassemble, impacting maintenance efficiency.

[0004] Therefore, an easy-to-assemble intermediate shaft for a tap selector is proposed. Utility Model Content

[0005] The purpose of the present utility model is to provide an easy-to-assemble intermediate shaft for a tap selector, so as to solve the problems raised by the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] An easy-to-assemble intermediate shaft for a tap selector, comprising: an intermediate shaft,

[0008] an upper insulating cylinder, arranged on the outside of the intermediate shaft;

[0009] A lower insulating cylinder, arranged below the upper insulating cylinder;

[0010] A contact ring is arranged above the lower insulating cylinder;

[0011] A connecting mechanism is provided above the contact ring and is used to fix the upper insulating cylinder and the lower insulating cylinder. The connecting mechanism includes an inner cylinder integrally mounted on the top surface of the lower insulating cylinder.

[0012] The fixing mechanism is arranged inside the upper insulating cylinder and the lower insulating cylinder, and is used to fix the upper insulating cylinder and the lower insulating cylinder on the intermediate shaft. The fixing mechanism includes a plurality of support plates respectively fixedly mounted on the inner walls of the upper insulating cylinder and the lower insulating cylinder.

[0013] Preferably, an inner groove is formed on the inner wall of the lower end of the upper insulating cylinder, and the inner wall of the inner groove is slidably connected to the outer wall of the inner cylinder.

[0014] Preferably, a plurality of movable grooves are provided on the top surface of the inner cylinder, and movable blocks are slidably connected to the inner walls of the plurality of movable grooves, and springs are fixedly installed near the sides of the plurality of movable blocks.

[0015] Preferably, a plurality of buckles are fixedly mounted on the top surfaces of the moving blocks, a plurality of slots are formed on the inner wall of the upper end of the inner groove, and the plurality of buckles are respectively engaged with the plurality of slots.

[0016] Preferably, two circular sleeves are fixedly mounted on the other ends of the plurality of support plates, and convex sleeves are integrally mounted on the side surfaces away from the ends of the two circular sleeves.

[0017] Preferably, the inner walls of the two circular sleeves and the inner walls of the two convex sleeves are respectively provided with a plurality of limit grooves, the outer wall of the intermediate shaft is fixedly installed with a plurality of limit blocks, the outer walls of the plurality of limit blocks are respectively slidably connected to the inner walls of the plurality of limit grooves, and the outer wall of the intermediate shaft is slidably connected to the inner walls of the two circular sleeves and the inner wall of the convex sleeve.

[0018] Preferably, the two bosses are fixedly installed with multiple fixing plates away from the end side surfaces, the two bosses are fixedly connected to the side surfaces of multiple limit blocks through multiple bolts, and the top and bottom surfaces of the multiple fixing plates are fixedly connected to the upper and lower sides of multiple limit blocks through multiple screws.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] The utility model fixes and supports the upper insulating cylinder and the lower insulating cylinder through the circular sleeve and the supporting plate, the circular sleeve and the convex sleeve are sleeved on the outer wall of the intermediate shaft, and the inner wall of the limiting groove is sleeved on the side of the limiting block, the limiting block limits the convex sleeve and the circular sleeve, the convex sleeve and the limiting block are fixed by bolts, and the fixing plate and the limiting block are fixed by screws, so that the convex sleeve and the circular sleeve are fixed to the intermediate shaft more firmly. Since the convex sleeve and the fixing plate are fixed to the limiting block by bolts and screws respectively, when the equipment fails, there is no need to spend a lot of time and energy on disassembly, thereby ensuring the efficiency of maintenance.

[0021] After being fixed by the lower insulating tube, the upper insulating tube is moved downward so that the inner groove at the lower end of the upper insulating tube is connected to the inner tube at the upper end of the lower insulating tube. At this time, the inner wall of the slot pushes the buckle to move, and the buckle drives the moving block to move and squeezes the spring. When the buckle moves to the innermost part of the slot, the spring pushes the moving block and the buckle to move and engage with the slot, thereby connecting and fixing the upper insulating tube and the lower insulating tube, making the connection and fixation of the upper insulating tube and the lower insulating tube more convenient and quick, thereby improving installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0023] Figure 2 This is an exploded view of the three-dimensional structure of the utility model;

[0024] Figure 3 It is a schematic cross-sectional view of a local three-dimensional structure of the utility model;

[0025] Figure 4 For the utility model Figure 3 Enlarged view of point A in the middle;

[0026] Figure 5 This is an exploded view of the fixing mechanism of the utility model;

[0027] Figure 6 This is a schematic diagram of the three-dimensional structure of the upper insulating cylinder of the present utility model.

[0028] In the picture:

[0029] 1. Intermediate shaft; 101. Upper insulating cylinder; 102. Lower insulating cylinder; 103. Contact ring;

[0030] 2. Connecting mechanism; 201. Inner cylinder; 202. Inner groove; 203. Moving groove; 204. Moving block; 205. Spring; 206. Buckle; 207. Slot;

[0031] 3. Fixing mechanism; 301. Support plate; 302. Round sleeve; 303. Convex sleeve; 304. Fixing plate; 305. Limiting groove; 306. Limiting block. DETAILED DESCRIPTION

[0032] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0033] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0034] like Figure 1-6As shown, the present application provides an easy-to-assemble intermediate shaft for a tap selector, including: an intermediate shaft 1, an upper insulating cylinder 101, which is arranged on the outside of the intermediate shaft 1, a lower insulating cylinder 102, which is arranged below the upper insulating cylinder 101, a contact ring 103, which is arranged above the lower insulating cylinder 102, a connecting mechanism 2, which is arranged above the contact ring 103 and is used to fix the upper insulating cylinder 101 and the lower insulating cylinder 102, the connecting mechanism 2 includes an inner cylinder 201 integrally mounted on the top surface of the lower insulating cylinder 102, a fixing mechanism 3, which is arranged inside the upper insulating cylinder 101 and the lower insulating cylinder 102, and is used to fix the upper insulating cylinder 101 and the lower insulating cylinder 102 on the intermediate shaft 1, and the fixing mechanism 3 includes a plurality of support plates 301 fixedly mounted on the inner walls of the upper insulating cylinder 101 and the lower insulating cylinder 102, respectively.

[0035] In this embodiment: through the setting of the connecting mechanism 2, the upper insulating tube 101 and the lower insulating tube 102 can be fixed conveniently and quickly to ensure the efficiency of installation. Through the setting of the fixing mechanism 3, the upper insulating tube 101 and the lower insulating tube 102 can be fixed conveniently and quickly. When the equipment fails, it is ensured that they can be disassembled conveniently and quickly to improve efficiency.

[0036] Specifically, such as Figure 1-6 As shown, an inner groove 202 is formed on the inner wall of the lower end of the upper insulating cylinder 101 , and the inner wall of the inner groove 202 is slidably connected to the outer wall of the inner cylinder 201 .

[0037] In this embodiment, the inner groove 202 and the inner cylinder 201 ensure that the upper insulating cylinder 101 and the lower insulating cylinder 102 are connected more firmly.

[0038] Specifically, such as Figure 1-6 As shown, a plurality of movable grooves 203 are provided on the top surface of the inner cylinder 201 , and movable blocks 204 are slidably connected to the inner walls of the plurality of movable grooves 203 , and springs 205 are fixedly installed near the sides of the plurality of movable blocks 204 .

[0039] In this embodiment, the movable groove 203 is provided to limit the movable block 204 to ensure that the movable block 204 moves smoothly. The spring 205 applies elastic force to the movable block 204 to ensure that the movable block 204 has a continuous thrust.

[0040] Specifically, such as Figure 1-6 As shown, the top surfaces of the multiple moving blocks 204 are respectively fixed with buckles 206 , and the inner wall of the upper end of the inner groove 202 is provided with multiple slots 207 , and the multiple buckles 206 are respectively engaged with the multiple slots 207 .

[0041] In this embodiment, the upper insulating tube 101 and the lower insulating tube 102 can be fixed conveniently and quickly by engaging the plurality of buckles 206 with the plurality of slots 207 .

[0042] Specifically, such as Figure 5-6 As shown, two circular sleeves 302 are fixedly mounted on the other ends of the plurality of support plates 301 , and convex sleeves 303 are integrally mounted on the side surfaces of the two circular sleeves 302 away from the ends.

[0043] In this embodiment, the circular sleeve 302 and the convex sleeve 303 are arranged to fix the circular sleeve 302 and the convex sleeve 303 to the intermediate shaft 1 , and then the upper insulating cylinder 101 and the lower insulating cylinder 102 are fixed to the intermediate shaft 1 through the support plate 301 .

[0044] Specifically, such as Figure 5-6 As shown, the inner walls of the two circular sleeves 302 and the inner walls of the two convex sleeves 303 are respectively provided with a plurality of limit grooves 305, and the outer wall of the intermediate shaft 1 is fixedly installed with a plurality of limit blocks 306. The outer walls of the plurality of limit blocks 306 are respectively slidably connected with the inner walls of the plurality of limit grooves 305, and the outer wall of the intermediate shaft 1 is slidably connected with the inner walls of the two circular sleeves 302 and the inner wall of the convex sleeve 303.

[0045] In this embodiment, by providing the limiting groove 305 and the limiting block 306 , the circular sleeve 302 and the convex sleeve 303 can be limited, ensuring that the circular sleeve 302 is not easily moved, and facilitating subsequent fixation.

[0046] Specifically, such as Figure 5-6 As shown, the two bosses 303 are fixedly installed with multiple fixing plates 304 away from the end side surfaces, and the two bosses 303 are fixedly connected to the sides of multiple limit blocks 306 through multiple bolts, and the top and bottom surfaces of the multiple fixing plates 304 are fixedly connected to the upper and lower sides of the multiple limit blocks 306 through multiple screws.

[0047] In this embodiment: the convex sleeve 303 is fixedly connected to the side surfaces of the multiple limit blocks 306 by multiple bolts, and the top and bottom surfaces of the multiple fixing plates 304 are fixedly connected to the upper and lower sides of the multiple limit blocks 306 by multiple screws, so that the convex sleeve 303 can be disassembled conveniently and quickly.

[0048] The specific solution is as follows: the circular sleeve 302 and the support plate 301 fix and support the upper insulating cylinder 101 and the lower insulating cylinder 102, the circular sleeve 302 and the convex sleeve 303 are sleeved on the outer wall of the intermediate shaft 1, and the inner wall of the limiting groove 305 is sleeved on the side of the limiting block 306, the limiting block 306 limits the convex sleeve 303 and the circular sleeve 302, the convex sleeve 303 is fixed to the limiting block 306 by bolts, and the fixing plate 304 is fixed to the limiting block 306 by screws, so that the convex sleeve 303 and the circular sleeve 302 are fixed to the intermediate shaft 1 more firmly. Since the convex sleeve 303 and the fixing plate 304 are fixed to the limiting block 306 by bolts and screws respectively, when the equipment fails, there is no need to spend a lot of time and precision The upper insulating tube 101 is disassembled with force to ensure the efficiency of maintenance. After the lower insulating tube 102 is fixed, the upper insulating tube 101 is moved downward so that the inner groove 202 at the lower end of the upper insulating tube 101 is connected to the inner tube 201 at the upper end of the lower insulating tube 102. At this time, the inner wall of the slot 207 pushes the buckle 206 to move, and the buckle 206 drives the moving block 204 to move and squeezes the spring 205. When the buckle 206 moves to the innermost part of the slot 207, the spring 205 pushes the moving block 204 and the buckle 206 to move and engage with the slot 207, thereby connecting and fixing the upper insulating tube 101 and the lower insulating tube 102, making the connection and fixing of the upper insulating tube 101 and the lower insulating tube 102 more convenient and quick, and improving the installation efficiency.

[0049] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative; within the spirit of the present invention, the technical features of the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0050] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. An easy-to-assemble intermediate shaft for a tap selector, comprising: The intermediate shaft (1) is characterized in that An upper insulating cylinder (101) is arranged outside the intermediate shaft (1); A lower insulating cylinder (102) is arranged below the upper insulating cylinder (101); A contact ring (103) is arranged above the lower insulating cylinder (102); A connecting mechanism (2) is provided above the contact ring (103) and is used to fix the upper insulating cylinder (101) and the lower insulating cylinder (102), wherein the connecting mechanism (2) comprises an inner cylinder (201) integrally mounted on the top surface of the lower insulating cylinder (102); A fixing mechanism (3) is arranged inside the upper insulating cylinder (101) and the lower insulating cylinder (102) and is used to fix the upper insulating cylinder (101) and the lower insulating cylinder (102) on the intermediate shaft (1). The fixing mechanism (3) includes a plurality of support plates (301) respectively fixedly mounted on the inner walls of the upper insulating cylinder (101) and the lower insulating cylinder (102).

2. The easy-to-assemble intermediate shaft for a tap selector according to claim 1, characterized in that: An inner groove (202) is provided on the inner wall of the lower end of the upper insulating cylinder (101), and the inner wall of the inner groove (202) is slidably connected to the outer wall of the inner cylinder (201).

3. The easy-to-assemble intermediate shaft for a tap selector according to claim 2, characterized in that: The top surface of the inner cylinder (201) is provided with a plurality of movable grooves (203), the inner walls of the plurality of movable grooves (203) are slidably connected with movable blocks (204), and the plurality of movable blocks (204) are fixedly installed with springs (205) near the side surfaces.

4. The easy-to-assemble intermediate shaft for a tap selector according to claim 3, characterized in that: The top surfaces of the plurality of moving blocks (204) are respectively fixedly mounted with buckles (206); the inner wall of the upper end of the inner groove (202) is provided with a plurality of clamping grooves (207); and the plurality of buckles (206) are respectively clamped with the plurality of clamping grooves (207).

5. The easy-to-assemble intermediate shaft for a tap selector according to claim 1, characterized in that: Two circular sleeves (302) are fixedly mounted on the other ends of the plurality of support plates (301), and convex sleeves (303) are integrally mounted on the side surfaces of the two circular sleeves (302) away from the ends.

6. The easily assembled intermediate shaft for a tap selector according to claim 5, characterized in that: The inner walls of the two circular sleeves (302) and the inner walls of the two convex sleeves (303) are respectively provided with a plurality of limiting grooves (305); the outer wall of the intermediate shaft (1) is fixedly provided with a plurality of limiting blocks (306); the outer walls of the plurality of limiting blocks (306) are respectively slidably connected to the inner walls of the plurality of limiting grooves (305); and the outer wall of the intermediate shaft (1) is slidably connected to the inner walls of the two circular sleeves (302) and the inner wall of the convex sleeve (303).

7. The easy-to-assemble intermediate shaft for a tap selector according to claim 6, characterized in that: A plurality of fixing plates (304) are fixedly mounted on the two convex sleeves (303) away from the end side surfaces, and the two convex sleeves (303) are fixedly connected to the side surfaces of the plurality of limit blocks (306) through a plurality of bolts, and the top surfaces and bottom surfaces of the plurality of fixing plates (304) are fixedly connected to the upper and lower side surfaces of the plurality of limit blocks (306) through a plurality of screws.

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