Loop-through wall shaft with easy maintenance
By using bearing housings and bearing designs in the loose through-wall shaft, the problem of eccentricity caused by wear is solved, the service life is extended, the installation process is simplified, and work efficiency is improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 邹华
- Filing Date
- 2025-06-25
- Publication Date
- 2026-07-14
AI Technical Summary
The existing looper through-wall shaft wears out during long-term operation, causing eccentricity, reducing work efficiency, and the copper looper is difficult to replace.
The design employs a bearing housing and bearing, with the bearing housing driving the bearing rotation to avoid wear, and a square shaft end is used for connection to reduce welding operations.
It extends bearing life, reduces replacement frequency, and improves the working efficiency and installation convenience of through-wall shafts.
Smart Images
Figure CN224497142U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of loose-fitting through-wall shaft technology, specifically a loose-fitting through-wall shaft that is easy to maintain. Background Technology
[0002] A through-wall shaft is a type of shaft that passes through walls or other structural obstacles. It is often used in situations where power or motion needs to be transferred from one area to another while maintaining the integrity of the structure or separating different environments.
[0003] In existing through-wall shafts, copper slippers are installed at both ends of the shaft during use. The shaft needs to operate for a long time, which causes wear on the copper slippers. This leads to eccentricity during rotation, reducing the shaft's efficiency and requiring replacement. However, replacing the copper slippers is difficult and affects the use of the through-wall shaft. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] To address the shortcomings of existing technologies, this utility model provides a wear-resistant through-wall shaft that is easy to maintain. This solves the problem that when a through-wall shaft needs to operate for a long time, the copper sleeve will wear down, causing the through-wall shaft to become eccentric during rotation, resulting in reduced working efficiency and the need for replacement. Replacing the copper sleeve is also difficult, affecting the use of the through-wall shaft.
[0006] (II) Technical Solution
[0007] To achieve the above objectives, this utility model provides the following technical solution: a removable through-wall shaft that is easy to maintain, comprising a through-wall shaft body, wherein two bearing seats are rotatably mounted on the left and right ends of the through-wall shaft body, and bearing mounting grooves are provided on the far-away surfaces of the two bearing seats. The left and right ends of the through-wall shaft body are respectively rotatably inserted into the interior of the two bearing mounting grooves, and bearings are installed inside the interior of the two bearing mounting grooves. The two bearings are respectively sleeved on the outer surfaces of the left and right ends of the through-wall shaft body.
[0008] Preferably, both bearing seats have annular grooves inside, and labyrinth rings are installed inside the two annular grooves. The two labyrinth rings are sleeved on the outer surface of the through-wall shaft body.
[0009] Preferably, a through cover is fixedly installed on the left surface of the bearing housing on the left side by bolts, and a blind cover is fixedly installed on the right surface of the bearing housing on the right side by bolts. The left end of the through-wall shaft body extends rotatably to the left surface of the through cover, and a square shaft head is fixedly installed on the left end of the through-wall shaft body.
[0010] Preferably, a spacer ring is installed on the inner wall of the transparent cover.
[0011] Preferably, the width of both bearings is 51cm and the inner diameter of both bearing mounting slots is 150cm.
[0012] (III) Beneficial Effects
[0013] Compared with the prior art, this utility model provides a loose-fitting through-wall shaft that is easy to maintain, and has the following beneficial effects:
[0014] 1. This easy-to-maintain through-wall shaft uses two bearing seats to replace the loose sleeve. When the through-wall shaft body rotates, it drives the two bearings to rotate as well. This more effectively avoids wear caused by the rotation of the through-wall shaft body. Moreover, the service life of the bearing seats is longer than that of the copper loose sleeve, thereby reducing the number of replacements and improving the working efficiency of the through-wall shaft.
[0015] 2. This easy-to-maintain through-wall shaft, by replacing the round shaft head on the left end of the through-wall shaft body with a square shaft head, eliminates the need for welding when connecting and installing the lifting arm, reducing installation difficulty. Furthermore, it eliminates the need for gas cutting to remove the steel bushing during replacement, further reducing the installation difficulty of the through-wall shaft and thus improving its utilization efficiency. Attached Figure Description
[0016] Figure 1 This is a front view of the overall structure of the easy-to-maintain through-wall shaft of this utility model;
[0017] Figure 2 This is a top view of the overall structure of the easy-to-maintain through-wall shaft of this utility model;
[0018] Figure 3 This is a front view of the internal cross-section structure of the easy-to-maintain through-wall shaft of this utility model;
[0019] Figure 4 This is a top-view sectional view of the internal structure of the easy-to-maintain through-wall shaft of this utility model.
[0020] In the diagram: 1. Through-wall shaft body; 2. Bearing seat; 3. Bearing; 4. Labyrinth spacer ring; 5. Through cover; 6. End cap; 7. Spacer ring; 8. Bearing mounting groove; 9. Annular groove; 10. Square shaft head. Detailed Implementation
[0021] 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.
[0022] Please see Figure 1-4 This utility model provides a new technical solution: a removable through-wall shaft that is easy to maintain, including a through-wall shaft body 1, two bearing seats 2 are rotatably installed on the left and right ends of the through-wall shaft body 1, and bearing mounting grooves 8 are opened on the far-away surfaces of the two bearing seats 2. The left and right ends of the through-wall shaft body 1 are respectively rotatably inserted into the interior of the two bearing mounting grooves 8, and bearings 3 are installed inside the interior of the two bearing mounting grooves 8. The two bearings 3 are respectively sleeved on the outer surfaces of the left and right ends of the through-wall shaft body 1.
[0023] Furthermore, by replacing the looper with two bearing seats 2, the two bearings 3 are driven to rotate when the through-wall shaft body 1 rotates, which more effectively avoids the wear generated when the through-wall shaft body 1 rotates. Moreover, the service life of the bearing seats 2 is longer than that of the copper looper, thereby reducing the number of replacements and improving the working efficiency of the through-wall shaft.
[0024] Furthermore, both bearing seats 2 have annular grooves 9 inside, and labyrinth distance rings 4 are installed inside both annular grooves 9. Both labyrinth distance rings 4 are sleeved on the outer surface of the through-wall shaft body 1.
[0025] Furthermore, a through cover 5 is fixedly installed on the left surface of the left bearing seat 2 by bolts, and a blind cover 6 is fixedly installed on the right surface of the right bearing seat 2 by bolts. The left end of the through-wall shaft body 1 extends to the left surface of the through cover 5, and a square shaft head 10 is fixedly installed on the left end of the through-wall shaft body 1.
[0026] Furthermore, by replacing the round shaft head at the left end of the through-wall shaft body 1 with a square shaft head 10, welding is no longer required when connecting and installing the lifting arm, reducing the installation difficulty. Also, gas cutting is no longer required when replacing the steel bushing, further reducing the installation difficulty of the through-wall shaft and thus improving its utilization efficiency.
[0027] Furthermore, a spacer ring 7 is installed on the inner wall of the cover 5.
[0028] Furthermore, the width of both bearings 3 is 51cm, and the inner diameter of both bearing mounting grooves 8 is 150cm.
[0029] Working Principle: When using this loose-fitting mounting shaft, install the through-wall shaft through the mounting holes. After installation, install the two bearing seats 2 to the left and right ends of the through-wall shaft body 1 respectively, so that the left end of the through-wall shaft body 1 enters the bearing mounting groove 8 on the left bearing seat 2, and the labyrinth spacer ring 4 on the left bearing seat 2 is fitted onto the outer surface of the through-wall shaft body 1. Then, push the bearing 3 into the bearing mounting groove 8, and fit the bearing 3 onto the outer surface of the left end of the through-wall shaft body 1, thus installing the bearing 3 onto the left bearing seat 2. After the bearing 3 is installed on the left bearing seat 2, fix the left bearing seat 2 with nuts and bolts. After fixing, align the opening on the through cover 5 with the left end of the through-wall shaft body 1, so that the through cover 5 drives the spacer ring 7 on the through cover 5 to fit onto the through-wall shaft body 1. On the left end, the cover 5 is then fixed to the bearing seat 2 on the left side using bolts and washers. The bearing 3 is then fixed inside the bearing mounting groove 8 on the left side to prevent it from shifting during operation and affecting its use. The bearing seat 2 on the right side is then installed on the right end of the through-wall shaft body 1 in the same way. Another bearing 3 is placed in the bearing mounting groove 8 on the right bearing seat 2 and fitted onto the outer surface of the right end of the through-wall shaft body 1. The bearing 3 on the right end is then fixed inside the bearing mounting groove 8 using the end cap 6. The bearing seat 2 on the right end is then fixed again using bolts and nuts. After fixing, the through-wall shaft body 1 can be rotated through a rectangular section, thereby rotating the left end of the through-wall shaft body 1 and enabling the use of the through-wall shaft. By replacing the looper with two bearing seats 2, the two bearings 3 are driven to rotate when the through-wall shaft body 1 rotates. This more effectively avoids the wear generated when the through-wall shaft body 1 rotates. Moreover, the service life of the bearing seats 2 is longer than that of the copper looper, thereby reducing the number of replacements and improving the working efficiency of the through-wall shaft.
[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A removable through-wall shaft that is easy to maintain, comprising a through-wall shaft body (1), characterized in that: Two bearing seats (2) are rotatably installed on the left and right ends of the through-wall shaft body (1). Bearing mounting grooves (8) are opened on the far-away surfaces of the two bearing seats (2). The left and right ends of the through-wall shaft body (1) are respectively rotatably inserted into the interior of the two bearing mounting grooves (8). Bearings (3) are installed inside the interior of the two bearing mounting grooves (8). The two bearings (3) are respectively sleeved on the outer surfaces of the left and right ends of the through-wall shaft body (1).
2. The easy-to-maintain through-wall shaft according to claim 1, characterized in that: Both bearing seats (2) have annular grooves (9) inside, and labyrinth fixed-distance rings (4) are installed inside the two annular grooves (9). The two labyrinth fixed-distance rings (4) are sleeved on the outer surface of the through-wall shaft body (1).
3. The easy-to-maintain through-wall shaft according to claim 1, characterized in that: A cover (5) is fixedly installed on the left surface of the bearing seat (2) on the left side by bolts, and a cover (6) is fixedly installed on the right surface of the bearing seat (2) on the right side by bolts. The left end of the through-wall shaft body (1) extends to the left surface of the cover (5) and a square shaft head (10) is fixedly installed on the left end of the through-wall shaft body (1).
4. The easy-to-maintain through-wall shaft according to claim 3, characterized in that: A spacer ring (7) is installed on the inner wall of the cover (5).
5. The easy-to-maintain through-wall shaft according to claim 1, characterized in that: The width of both bearings (3) is 51cm, and the inner diameter of both bearing mounting grooves (8) is 150cm.