Hydraulic power plant rotor connecting shaft screw structure

Abstract

The utility model relates to the technical field of screws, in particular to a hydraulic power plant rotor connecting shaft screw structure which comprises a rotor and a rotating shaft arranged on the inner wall of the rotor. The screw mechanism is mounted in the rotor; wherein the screw mechanism comprises a connecting assembly fixedly connected to the interior of the rotor, a screw assembly is arranged in the connecting assembly, and an inner lock assembly is arranged in the screw assembly; during use, the arc-shaped abutting plate can drive the two positioning plates to be far away from each other under the cooperation of the screw assembly and the inner lock assembly, meanwhile, the ends of the positioning plates can penetrate out of the side grooves and extend into the vertical grooves, and therefore the relative positions of the threaded nails and the threaded pipes can be positioned, and when the positioning plates are abraded and broken, the threaded nails can be prevented from being damaged. And the regular thread structure can still be changed in the threaded pipe, so that the situation that the threaded nail is easy to rotate is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of screws, and particularly relates to a screw structure for a rotor connecting shaft of a hydropower plant. Background Technique

[0002] The screw structure of the rotor connecting shaft of a hydropower plant is a structure specifically designed to lock the generator rotor and the shaft core together. The main components of this structure include the generator rotor, the shaft core, and the screw. A screw refers to a bolt, which is a tool that uses the physical and mathematical principles of the circular rotation of an inclined plane of an object and friction to gradually fasten machine parts.

[0003] After retrieval, in the existing technology, there is an "anti-loosening screw" with a publication number of "CN218817484U". This device can prevent the screw from loosening and falling, but when the screw is continuously worn, it will still cause the screw to be loosely fastened.

[0004] Therefore, a screw structure for a rotor connecting shaft of a hydropower plant is proposed to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a screw structure for a rotor connecting shaft of a hydropower plant to solve the above problems, and improve the problem that the screw is still loosely fastened due to continuous wear.

[0006] The utility model realizes the above purpose through the following technical solutions. A screw structure for a rotor connecting shaft of a hydropower plant includes: a rotor and a rotating shaft, the rotating shaft is arranged on the inner wall of the rotor; a screw mechanism, the screw mechanism is installed inside the rotor; wherein, the screw mechanism includes a connecting component fixedly connected to the inside of the rotor, a screw component is arranged inside the connecting component, and an inner locking component is arranged inside the screw component.

[0007] Preferably, the screw component includes a threaded nail threadedly connected to the inside of the connecting component. The upper end of the threaded nail penetrates out of the connecting component. A side groove is formed on the surface of the threaded nail. A positioning plate is arranged inside the side groove. An inner groove is formed inside the threaded nail. The inner groove is communicated with the side groove. An arc-shaped abutting plate is arranged inside the inner groove. The arc-shaped abutting plate is fixedly connected to the adjacent positioning plate. The arc-shaped abutting plate will drive the positioning plate to slide on the inner wall of the side groove and extend into the vertical groove at the same time. At this time, the positioning plate can limit the threaded nail from rotating again inside the threaded tube.

[0008] Preferably, the inner locking assembly includes a cylinder disposed inside the inner groove. A round block is fixedly connected to the upper end of the cylinder. An elastic plate is fixedly connected to the surface of the round block. The elastic plate is located inside the upper groove. The upper end of the elastic plate penetrates out of the upper groove. The cylinder is inserted into the inner groove and can cooperate with the rubber block to support the two arc-shaped pressing plates away from each other.

[0009] Preferably, the connecting assembly includes a threaded pipe fixedly connected inside the rotating shaft. A vertical groove is formed inside the threaded pipe. The vertical groove and the positioning plate cooperate to form a relatively stable positioning effect.

[0010] Preferably, a plurality of rubber blocks are fixedly connected to the inner side of the arc-shaped pressing plate. The plurality of rubber blocks are vertically distributed along the inner side of the arc-shaped pressing plate. The material of the rubber block can be a soft rubber material component.

[0011] Preferably, an upper groove is formed at the upper end of the threaded nail. The upper groove communicates with the inner groove. The elastic plate has elasticity and can be inserted into the upper groove according to its shape and will not easily come out.

[0012] Preferably, a plurality of guiding blocks are fixedly connected to the inner wall of the inner groove. The plurality of guiding blocks are annularly distributed along the inner wall of the inner groove. A chamfer is provided at the upper end of the guiding block to facilitate the guiding operation.

[0013] Preferably, a guiding groove is formed on the surface of the elastic plate. The guiding groove is slidably connected to the inner wall of the guiding block. The guiding block can guide the guiding groove.

[0014] The beneficial effects of the present utility model are as follows:

[0015] 1. During use, with the cooperation of the screw component and the inner locking component, the arc-shaped pressing plate can drive the two positioning plates away from each other. At the same time, the end of the positioning plate will penetrate out of the side groove and extend into the inner part of the vertical groove, so that the relative position of the threaded nail and the threaded pipe can be positioned. And when the positioning plate is worn and broken, the regular thread structure can still be changed inside the threaded pipe, avoiding the situation that the threaded nail rotates easily.

[0016] 2. Under the action of the inner locking component, the cylinder is inserted into the inner groove by the elastic plate carrying the round block, and then the two arc-shaped pressing plates will be driven away from each other. At the same time, the rubber block can make the two arc-shaped pressing plates carry the positioning plate away sufficiently during the insertion of the cylinder, avoiding the situation that the threaded nail rotates easily. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the present utility model;

[0018] Figure 2 is a schematic structural diagram of the screw mechanism of the present utility model;

[0019] Figure 3 Schematic diagram of the vertical groove opening of the present utility model;

[0020] Figure 4 Partial explosion schematic diagram of the screw assembly of the present utility model;

[0021] Figure 5 Schematic diagram of the upper groove opening of the present utility model;

[0022] Figure 6 Schematic diagram of the connection between the arc-shaped pressing plate and the positioning plate of the present utility model.

[0023] In the figure: 1, rotor; 2, rotating shaft; 3, screw mechanism; 31, connection component; 311, threaded tube; 312, vertical groove; 32, screw component; 321, threaded nail; 322, upper groove; 323, inner groove; 324, guiding block; 325, arc-shaped pressing plate; 326, positioning plate; 327, rubber block; 328, side groove; 33, inner locking component; 331, cylinder; 332, round block; 333, elastic plate; 334, guiding groove. Specific implementation manner

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] During specific implementation: As Figure 1-6 shown, a screw structure for connecting the rotating shaft of a hydropower plant rotor includes: a rotor 1 and a rotating shaft 2, the rotating shaft 2 is arranged on the inner wall of the rotor 1; a screw mechanism 3, the screw mechanism 3 is installed inside the rotor 1; wherein, the screw mechanism 3 includes a connection component 31 fixedly connected inside the rotor 1, a screw component 32 is arranged inside the connection component 31, and an inner locking component 33 is arranged inside the screw component 32;

[0026] As Figure 2 , Figure 3 , Figure 4 and Figure 5 , Figure 6As shown, the screw assembly 32 includes a threaded nail 321 threadedly connected inside the connection assembly 31. The upper end of the threaded nail 321 penetrates out of the connection assembly 31. A side groove 328 is formed on the surface of the threaded nail 321. A positioning plate 326 is arranged inside the side groove 328. An inner groove 323 is formed inside the threaded nail 321. The inner groove 323 communicates with the side groove 328. An arc-shaped abutting plate 325 is arranged inside the inner groove 323. The arc-shaped abutting plate 325 is fixedly connected to the adjacent positioning plate 326. A plurality of rubber blocks 327 are fixedly connected to the inner side of the arc-shaped abutting plate 325. The plurality of rubber blocks 327 are vertically distributed along the inner side of the arc-shaped abutting plate 325. An upper groove 322 is formed at the upper end of the threaded nail 321. The upper groove 322 communicates with the inner groove 323. A plurality of guide blocks 324 are fixedly connected to the inner wall of the inner groove 323. The plurality of guide blocks 324 are annularly distributed along the inner wall of the inner groove 323. The connection assembly 31 includes a threaded tube 311 fixedly connected inside the rotating shaft 2. A vertical groove 312 is formed inside the threaded tube 311;

[0027] After inserting the threaded nail 321 into the threaded tube 311, the two arc-shaped abutting plates 325 can be supported to move away from each other, so that the arc-shaped abutting plate 325 will drive the positioning plate 326 to slide on the inner wall of the side groove 328 and will extend into the vertical groove 312 at the same time. At this time, the positioning plate 326 can limit the threaded nail 321 from rotating again inside the threaded tube 311, thereby positioning the threaded nail 321 and making the connection of the threaded nail 321 more stable. The material of the rubber block 327 can be a soft rubber material component;

[0028] As Figure 1 、 Figure 2 、 Figure 4 and Figure 6 As shown, the inner locking assembly 33 includes a cylinder 331 arranged inside the inner groove 323. A round block 332 is fixedly connected to the upper end of the cylinder 331. An elastic plate 333 is fixedly connected to the surface of the round block 332. The elastic plate 333 is located inside the upper groove 322. The upper end of the elastic plate 333 penetrates out of the upper groove 322. A guide groove 334 is formed on the surface of the elastic plate 333. The guide groove 334 is slidably connected to the inner wall of the guide block 324. When in use, the cylinder 331 can be inserted into the adjacent arc-shaped abutting plate 325. A tool is inserted into the guide groove 334. At this time, with the cooperation of the guide block 324, the threaded nail 321 will be driven to rotate. And when the cylinder 331 is inserted into the inner groove 323, it can cooperate with the rubber block 327 to support the two arc-shaped abutting plates 325 to move away from each other, and then the positioning plate 326 will extend into the vertical groove 312 to keep positioning the threaded nail 321 and making the connection of the threaded nail 321 more stable.

[0029] When the utility model is in use, the cylinder 331 can be inserted into the interior of the adjacent arc-shaped abutting plate 325. By inserting a tool into the interior of the guiding groove 334, at this time, with the cooperation of the guiding block 324, the threaded nail 321 is driven to rotate. And when the cylinder 331 is inserted into the interior of the inner groove 323, it can cooperate with the rubber block 327 to support the two arc-shaped abutting plates 325 to move away from each other. Furthermore, the positioning plate 326 extends into the interior of the vertical groove 312. After the threaded nail 321 is inserted into the threaded tube 311, by supporting the two arc-shaped abutting plates 325 to move away from each other, the arc-shaped abutting plate 325 drives the positioning plate 326 to slide on the inner wall of the side groove 328 and will extend into the interior of the vertical groove 312 at the same time. At this time, the positioning plate 326 can limit the threaded nail 321 from rotating again in the threaded tube 311, so as to achieve a positioning effect on the threaded nail 321, and the connection of the threaded nail 321 is more stable.

[0030] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. The narrative way of this specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A screw structure for the rotor connecting shaft of a hydropower plant, characterized in that, Comprising: A rotor (1) and a rotating shaft (2), the rotating shaft (2) being arranged on the inner wall of the rotor (1); A screw mechanism (3), the screw mechanism (3) being installed inside the rotor (1); Wherein, the screw mechanism (3) includes a connection component (31) fixedly connected to the inside of the rotor (1), a screw component (32) is arranged inside the connection component (31), and an inner locking component (33) is arranged inside the screw component (32); The screw component (32) includes a threaded screw (321) threadedly connected to the inside of the connection component (31), the upper end of the threaded screw (321) penetrates out of the connection component (31), a side groove (328) is formed on the surface of the threaded screw (321), a positioning plate (326) is arranged inside the side groove (328), an inner groove (323) is formed inside the threaded screw (321), the inner groove (323) communicates with the side groove (328), and an arc-shaped pressing plate (325) is arranged inside the inner groove (323), the arc-shaped pressing plate (325) being fixedly connected to the adjacent positioning plate (326); The inner locking component (33) includes a cylinder (331) arranged inside the inner groove (323), a round block (332) is fixedly connected to the upper end of the cylinder (331), an elastic plate (333) is fixedly connected to the surface of the round block (332), the elastic plate (333) is located inside the upper groove (322), and the upper end of the elastic plate (333) penetrates out of the upper groove (322).

2. The screw structure of the rotor connecting shaft of a hydropower plant according to claim 1, wherein: The connection component (31) includes a threaded tube (311) fixedly connected to the inside of the rotating shaft (2), and a vertical groove (312) is formed inside the threaded tube (311).

3. A screw structure for the rotor connecting shaft of a hydropower plant according to claim 1, characterized in that: A plurality of rubber blocks (327) are fixedly connected to the inner side of the arc-shaped pressing plate (325), and the plurality of rubber blocks (327) are vertically distributed along the inner side of the arc-shaped pressing plate (325).

4. A screw structure for a rotor connecting shaft of a hydropower plant according to claim 1, characterized in that: An upper groove (322) is formed at the upper end of the threaded screw (321), and the upper groove (322) communicates with the inner groove (323).

5. A screw structure for the rotor connecting shaft of a hydropower plant according to claim 4, characterized in that: A plurality of guide blocks (324) are fixedly connected to the inner wall of the inner groove (323), and the plurality of guide blocks (324) are annularly distributed along the inner wall of the inner groove (323).

6. The screw structure of the rotor connecting shaft of a hydropower plant according to claim 1, characterized in that: A guide groove (334) is formed on the surface of the elastic plate (333), and the guide groove (334) is slidably connected to the inner wall of the screw component (32).

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