Central shaft penetrating variable cylinder body

Abstract

The utility model discloses a central shaft penetrating variable cylinder body, and relates to the technical field of variable cylinder bodies. Comprising a variable main body cylinder, a central shaft column is rotatably connected in the variable main body cylinder, a mounting groove is formed in the inner wall of the variable main body cylinder, a sealing assembly is arranged in the variable main body cylinder and comprises a sliding disc, and the sliding disc is slidably connected to the inner wall of the mounting groove; a plurality of compression springs are fixedly connected to the right end of the sliding disc, the inner wall of the fixed disc is fixedly connected with the inner wall of the fixed groove through the arranged sealing assembly, so that the central shaft column drives the fixed disc to rotate while rotating, and the compression springs extend to push the sliding disc; and the left end of the static disc is attached to the right end of the rotating disc, so that the inner wall of the variable main body cylinder is conveniently sealed, and lubricating oil in the variable main body cylinder is prevented from flowing out through a rotating gap between the variable main body cylinder and the central shaft column.

Description

Technical Field

[0001] This utility model relates to the field of variable cylinder technology, specifically to a variable cylinder with a central shaft passing through it. Background Technology

[0002] In the hydraulic and power transmission systems of modern industrial equipment, it is a common design structure for the central shaft to pass through the variable cylinder. The variable cylinder plays a key role in these systems, as it can flexibly adjust the output parameters according to actual working requirements.

[0003] However, in traditional variable displacement cylinders where the central shaft passes through the cylinder block, the lubricating oil inside the cylinder can easily leak out through the gap between the central shaft and the cylinder block when the central shaft rotates. This is mainly because during operation, the high-speed rotation of the central shaft generates centrifugal force and vibration, which exerts an outward force on the lubricating oil. At the same time, the oil pressure inside the cylinder also prompts the lubricating oil to seek leakage paths. The leakage of lubricating oil will lead to a reduction in the amount of lubricating oil in the cylinder, resulting in insufficient lubrication between components, aggravating wear, and shortening the service life of the equipment. Therefore, there is an urgent need for a design where the central shaft passes through the variable displacement cylinder block to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a method where the central shaft passes through the variable cylinder body, thereby solving the problem mentioned in the background art where, when the central shaft rotates, the lubricating oil in the variable cylinder body easily flows out through the gap between the central shaft and the cylinder body.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a central shaft passing through a variable cylinder body, including a variable main cylinder, wherein a central shaft column is rotatably connected inside the variable main cylinder, an installation groove is provided on the inner wall of the variable main cylinder, and a sealing component is provided inside the variable main cylinder;

[0006] The sealing assembly includes a sliding disc, which is slidably connected to the inner wall of the mounting groove. A plurality of compression springs are fixedly connected to the right end of the sliding disc, and the right ends of the plurality of compression springs are all fixedly connected to the inner wall of the mounting groove. A fixing groove is formed on the surface of the central shaft, and a fixing disc is fixedly connected to the inner wall of the fixing groove.

[0007] Preferably, a rotating disk is fixedly connected to the right end of the fixed disk, and a stationary disk is fixedly connected to the left end of the sliding disk, with the right end of the rotating disk and the left end of the stationary disk in contact.

[0008] Preferably, the inner wall of the variable main cylinder is provided with a connecting groove, and a sealing ring is fixedly connected to the inner wall of the connecting groove. The inner wall of the sealing ring is in contact with the surface of the central shaft column.

[0009] Preferably, the inner wall of the variable body cylinder is fixedly connected to two bearings, and the inner walls of the two bearings are fixedly connected to the surface of the central shaft column.

[0010] Preferably, the size of the sliding disk matches the size of the mounting groove, and the sliding disk is in contact with the inner wall of the mounting groove.

[0011] Preferably, the size of the rotating disk matches the size of the stationary disk, and both the rotating disk and the stationary disk are made of alumina ceramic.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] With the sealing assembly in place, the inner wall of the fixed disk is fixedly connected to the inner wall of the fixed groove, so that the central shaft rotates while driving the fixed disk to rotate. Multiple compression springs extend to push the sliding disk, so that the left end of the stationary disk is in contact with the right end of the rotating disk, which facilitates the sealing of the inner wall of the variable displacement cylinder and prevents the lubricating oil inside the variable displacement cylinder from flowing out through the gap between the variable displacement cylinder and the central shaft. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a partial cross-sectional view of the sealing assembly of this utility model;

[0016] Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle.

[0017] In the diagram: 1. Variable displacement main cylinder; 2. Central shaft column; 3. Mounting groove; 4. Sealing assembly; 401. Sliding disc; 402. Compression spring; 403. Fixed groove; 404. Fixed disc; 405. Rotating disc; 406. Stationary disc; 407. Connecting groove; 408. Sealing ring; 409. Bearing. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-3This utility model provides a variable displacement cylinder with a central shaft passing through it. The cylinder includes a variable displacement main cylinder 1, a central shaft column 2 rotatably connected inside the variable displacement main cylinder 1, an installation groove 3 on the inner wall of the variable displacement main cylinder 1, and a sealing assembly 4 inside the variable displacement main cylinder 1. The sealing assembly 4 includes a sliding disc 401 slidably connected to the inner wall of the installation groove 3. Multiple compression springs 402 are fixedly connected to the right end of the sliding disc 401, and the right ends of the multiple compression springs 402 are all fixedly connected to the inner wall of the installation groove 3. A fixing groove 403 is provided on the surface of the central shaft column 2. A fixed plate 404 is fixedly connected to the inner wall of the fixed groove 403. Through the sealing component 4, the inner wall of the fixed plate 404 is fixedly connected to the inner wall of the fixed groove 403, so that the central shaft column 2 drives the fixed plate 404 to rotate while rotating. Multiple compression springs 402 extend to push the sliding plate 401, so that the left end of the stationary plate 406 is in contact with the right end of the rotating plate 405, which facilitates the sealing of the inner wall of the variable main cylinder 1 and prevents the lubricating oil inside the variable main cylinder 1 from flowing out through the gap between the variable main cylinder 1 and the central shaft column 2.

[0020] Furthermore, a rotating disk 405 is fixedly connected to the right end of the fixed disk 404, and a stationary disk 406 is fixedly connected to the left end of the sliding disk 401. The right end of the rotating disk 405 is in contact with the left end of the stationary disk 406. The rotating disk 405 and the stationary disk 406 work together to facilitate the sealing of the lubricating oil inside the variable main cylinder 1.

[0021] Furthermore, a connecting groove 407 is provided on the inner wall of the variable main cylinder 1, and a sealing ring 408 is fixedly connected to the inner wall of the connecting groove 407. The inner wall of the sealing ring 408 is in contact with the surface of the central shaft column 2. The sealing ring 408 facilitates the initial blocking of the lubrication inside the variable main cylinder 1.

[0022] Furthermore, two bearings 409 are fixedly connected to the inner wall of the variable main cylinder 1. The inner walls of the two bearings 409 are fixedly connected to the surface of the central shaft column 2. The two bearings 409 facilitate the rotation of the central shaft column 2 and reduce the friction between the central shaft column 2 and the inner wall of the variable main cylinder 1 when the central shaft column 2 rotates.

[0023] Furthermore, the size of the sliding disk 401 matches the size of the mounting groove 3, and the sliding disk 401 is attached to the inner wall of the mounting groove 3. The sliding disk 401, which is attached to the inner wall of the mounting groove 3, facilitates the re-blocking of the lubricating oil inside the variable main body cylinder 1.

[0024] Furthermore, the dimensions of the rotating disk 405 are matched with those of the stationary disk 406. Both the rotating disk 405 and the stationary disk 406 are made of alumina ceramic. By using alumina ceramic as the rotating disk 405 and the stationary disk 406, it is possible to maintain good surface integrity and reduce wear under high-speed friction and strong wear environments. At the same time, the rotating disk 405 and the stationary disk 406 made of alumina ceramic have smooth surfaces and low coefficients of friction, which helps to effectively reduce frictional resistance and energy loss.

[0025] Working principle: Through the sealing component 4, the inner wall of the fixed disk 404 is fixedly connected to the inner wall of the fixed groove 403, so that the central shaft 2 rotates while driving the fixed disk 404 to rotate. Multiple compression springs 402 extend to push the sliding disk 401, so that the left end of the stationary disk 406 is in contact with the right end of the rotating disk 405, thereby facilitating the sealing of the inner wall of the variable main cylinder 1 and preventing the lubricating oil inside the variable main cylinder 1 from flowing out through the gap between the variable main cylinder 1 and the central shaft 2. At the same time, the sealing ring is also used to seal the inner wall of the variable main cylinder 1. 408, the inner wall of the sealing ring 408 is in contact with the surface of the central shaft column 2, which facilitates the initial blocking of the internal lubrication of the variable main body cylinder 1. In addition, the rotating disk 405 and stationary disk 406 made of alumina ceramic are provided. Alumina ceramic has extremely high hardness and strength, which makes it easy to maintain good surface integrity and reduce wear under high-speed friction and strong wear environment. At the same time, the rotating disk 405 and stationary disk 406 made of alumina ceramic have smooth surfaces and low friction coefficients, which makes it easy to effectively reduce frictional resistance and energy loss.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A central shaft through variable cylinder comprising a variable body cylinder (1), characterized by: The variable body cylinder (1) is internally rotatably connected with a center shaft column (2), an installation groove (3) is arranged on the inner wall of the variable body cylinder (1), and a sealing assembly (4) is arranged in the variable body cylinder (1); The sealing assembly (4) comprises a sliding disc (401), the sliding disc (401) is slidably connected to the inner wall of the installation groove (3), a plurality of compression springs (402) are fixedly connected to the right end of the sliding disc (401), the right ends of the plurality of compression springs (402) are fixedly connected to the inner wall of the installation groove (3), and a fixing groove (403) is arranged on the surface of the center shaft column (2).

2. A central shaft through variable cylinder according to claim 1, characterized in that: The right end of the fixing disc (404) is fixedly connected with a rotating disc (405), the left end of the sliding disc (401) is fixedly connected with a stationary disc (406), and the right end of the rotating disc (405) is attached to the left end of the stationary disc (406).

3. A central shaft through variable cylinder body according to claim 1, characterized in that: The inner wall of the variable body cylinder (1) is provided with a connecting groove (407), the inner wall of the connecting groove (407) is fixedly connected with a sealing ring (408), and the inner wall of the sealing ring (408) is attached to the surface of the center shaft column (2).

4. A central shaft through variable cylinder body according to claim 1, characterized in that: The inner wall of the variable body cylinder (1) is fixedly connected with two bearings (409), and the inner walls of the two bearings (409) are fixedly connected with the surface of the center shaft column (2).

5. A central shaft through variable cylinder body according to claim 1, characterized in that: The size of the sliding disc (401) matches the size of the installation groove (3), and the sliding disc (401) is attached to the inner wall of the installation groove (3).

6. A central shaft through variable cylinder body according to claim 2, characterized in that: The size of the rotating disc (405) matches the size of the stationary disc (406), and the rotating disc (405) and the stationary disc (406) are both made of alumina ceramic material.

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