Pin shaft with shaft sleeve locking structure
By setting staggered guide grooves and guide bars on the pins and bushings, combined with insertion grooves and threaded cover plates, the problem of loosening of the pins and bushings when improperly installed or subjected to vibration and impact is solved, achieving a more stable connection, reducing wear, and extending service life.
Patent Information
- Application Number
- CN202520586707.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-31
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2035-03-31
AI Technical Summary
Pins and bushings are prone to loosening when improperly installed or subjected to vibration and impact, leading to accelerated wear and shortened service life.
A pin with a bushing locking structure was designed. By setting staggered guide grooves and guide bars on the pin and bushing, combined with the insertion groove and threaded cover plate, the rotation and axial movement of the bushing are restricted, thereby enhancing the connection stability.
It effectively prevents relative rotation and axial movement between the bushing and the pin, reduces wear, and extends service life.
Smart Images
Figure CN223676775U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a pin shaft with axle sleeve locking structure. BACKGROUND
[0002] Pin shaft is a kind of standard fastener, mainly used in the hinge of two parts, constitutes hinged connection. It can be static fixed connection, also can be connected with relative motion. In actual use, pin shaft is usually used with axle sleeve, and axle sleeve can be used as the protective layer of pin shaft, reduces the direct contact between other components, thereby reducing friction, improves mechanical efficiency.
[0003] When pin shaft and axle sleeve are used, the axle sleeve may be loose due to improper installation, vibration and impact, etc. Speed up the wear and tear, shorten the service life of pin shaft and axle sleeve. UTILITY MODEL CONTENT
[0004] The main purpose of the utility model is to provide a pin shaft with axle sleeve locking structure to solve the problems in the above background.
[0005] The purpose of the utility model can be achieved by adopting the following technical scheme:
[0006] A pin shaft with axle sleeve locking structure, comprising pin shaft body and axle sleeve, first guide groove is formed on the outer wall of the pin shaft body along the length direction thereof, first guide strip is arranged on the inner wall of the axle sleeve along the length direction thereof, plug-in groove is arranged in the side end of the pin shaft body, second guide groove is arranged on the inner wall of the plug-in groove, second guide strip is arranged on the outer wall of the axle sleeve, screw post is arranged on the other side of the pin shaft body, and threaded cover plate is arranged on the screw post.
[0007] Preferably, the first guide groove is provided with four first guide grooves, which are evenly distributed on the pin shaft body along the circumference of the pin shaft body.
[0008] Preferably, the second guide groove is provided with four second guide grooves, which are evenly distributed on the plug-in groove along the circumference of the plug-in groove.
[0009] Preferably, the first guide groove and the second guide groove are staggered.
[0010] Preferably, ring groove is arranged on the other side of the pin shaft body, a plurality of springs are arranged in the ring groove, and ring plate is arranged on the plurality of springs.
[0011] Preferably, expansion rod is arranged between adjacent two springs, and the two ends of the expansion rod are connected to the bottom surface of the ring groove and the bottom surface of the ring plate respectively.
[0012] Preferably, four springs are provided, and the four springs are evenly distributed along the circumference of the ring groove.
[0013] Preferably, the free length of the spring is greater than the depth of the ring groove.
[0014] The beneficial technical effects of the present application are as follows:
[0015] The pin shaft provided by the present application limits the position of the shaft sleeve by the first guide groove and the second guide groove arranged in a staggered manner, prevents relative rotation of the shaft sleeve and the pin shaft body, limits the two ends of the shaft sleeve by the insertion groove and the threaded cover plate, prevents axial movement of the shaft sleeve, ensures fastening connection between the pin shaft body and the shaft sleeve, reduces wear, and ensures service life. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 FIG. 1 is a structure schematic view of a pin shaft (assembled) of an embodiment of the present application;
[0017] Figure 2 FIG. 2 is a structure schematic view of a pin shaft (not assembled) of an embodiment of the present application;
[0018] Figure 3 FIG. 3 is a sectional view of a pin shaft of an embodiment of the present application;
[0019] Figure 4 FIG. 4 is a structure schematic view of a pin shaft body of an embodiment of the present application;
[0020] Figure 5 FIG. 5 is a structure schematic view of a shaft sleeve of an embodiment of the present application;
[0021] Figure 6 FIG. 6 is a structure schematic view of a ring plate, a spring and an extension rod of an embodiment of the present application.
[0022] In the drawings: 1, pin shaft body; 2, first guide groove; 3, shaft sleeve; 4, first guide strip; 5, insertion groove; 6, second guide groove; 7, second guide strip; 8, stud; 9, threaded cover plate; 10, ring groove; 11, spring; 12, ring plate; 13, extension rod. DETAILED DESCRIPTION
[0023] In order to make the skilled in the art more clear and explicit technical scheme of the present application, the present application is described in further detail below in conjunction with the embodiments and the drawings, but the implementation manner of the present application is not limited thereto.
[0024] For example, Figures 1-6As shown, the pin shaft with the shaft sleeve locking structure provided by the embodiment comprises a pin shaft body 1 and a shaft sleeve 3. A first guide groove 2 is arranged on the outer wall of the pin shaft body 1 along the length direction thereof. A first guide strip 4 is arranged on the inner wall of the shaft sleeve 3 along the length direction thereof. An insertion groove 5 is arranged inside the side end of the pin shaft body 1. A second guide groove 6 is arranged on the inner wall of the insertion groove 5. A second guide strip 7 is arranged on the outer wall of the shaft sleeve 3. A threaded stud 8 is arranged on the other side of the pin shaft body 1. A threaded cover plate 9 is arranged on the threaded stud 8.
[0025] When installed, the positions of the first guide groove 2 and the first guide strip 4 are matched, the shaft sleeve 3 is sleeved on the pin shaft body 1 to limit the relative rotation of the shaft sleeve 3 and the pin shaft body 1, then the threaded cover plate 9 is installed on the threaded stud 8 to limit the axial movement of the shaft sleeve 3, thereby ensuring the fastening connection between the pin shaft body 1 and the shaft sleeve 3, reducing the abrasion and ensuring the service life.
[0026] In the embodiment, as shown in the figure, Figure 4 four first guide grooves 2 are arranged on the pin shaft body 1 and evenly distributed along the circumference of the pin shaft body 1, thereby limiting the position of the shaft sleeve 3 in multiple directions and preventing the relative rotation of the shaft sleeve 3.
[0027] In the embodiment, as shown in the figure, Figure 4 four second guide grooves 6 are arranged on the insertion groove 5 and evenly distributed along the circumference of the insertion groove 5, thereby further limiting the position of the shaft sleeve 3 and ensuring the structural stability.
[0028] In the embodiment, as shown in the figure, Figure 4 the first guide groove 2 and the second guide groove 6 are arranged alternately, thereby avoiding the possible weakening of the strength in the same straight line and increasing the stability of the structure.
[0029] In the embodiment, as shown in the figure, Figure 2 a ring groove 10 is arranged on the other side end surface of the pin shaft body 1. A plurality of springs 11 are arranged in the ring groove 10. A ring plate 12 is arranged on the plurality of springs 11. The springs 11 can provide a certain buffering effect when the pin shaft is subjected to external force, thereby reducing the influence of vibration and impact on the system.
[0030] In the embodiment, as shown in the figure, Figure 6 a telescopic rod 13 is arranged between the adjacent two springs 11. The two ends of the telescopic rod 13 are connected to the bottom surface of the ring groove 10 and the bottom surface of the ring plate 12, respectively, thereby limiting the extension direction of the springs 11 and improving the structural stability.
[0031] In the embodiment, as shown in the figure, Figure 6 four springs 11 are arranged, which are evenly distributed along the circumference of the ring groove 10, thereby providing balanced elastic support and ensuring the buffering effect.
[0032] In the embodiment, as shown in the figure, the free length value of the spring 11 is greater than the depth value of the ring groove 10, when the threaded cover plate 9 is tightened, the spring 11 will be compressed, and the buffering effect is stably provided. Figure 2
[0033] In summary, in the embodiment, the pin shaft provided by the embodiment limits the position of the shaft sleeve 3 through the staggered first guide groove 2 and the second guide groove 6, prevents the relative rotation of the shaft sleeve 3 and the pin shaft body 1, limits the two ends of the shaft sleeve 3 through the plug-in groove 5 and the threaded cover plate 9, prevents the axial movement of the shaft sleeve 3, guarantees the fastening connection between the pin shaft body 1 and the shaft sleeve 3, can reduce the wear, and guarantees the service life.
[0034] The above is only further embodiments of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art in the range disclosed by the utility model, according to the technical scheme and the conception of the utility model, equivalent replacement or change, all belong to the protection scope of the utility model.
Claims
1. A trunnion with a bush locking structure, characterized by: The utility model relates to a pin shaft body (1) and a bushing (3), the first guide groove (2) is set to the outer wall of pin shaft body (1) along its length direction, the first guide strip (4) is set to the inner wall of bushing (3) along its length direction, the plug-in slot (5) is set to the inside of one side end of pin shaft body (1), the second guide groove (6) is set to the inner wall of plug-in slot (5), the second guide strip (7) is set to the outer wall of bushing (3), the stud (8) is set to the other side of pin shaft body (1), the threaded cover plate (9) is set to the stud (8).
2. The pin with the locking structure of the bushing according to claim 1, characterized in that: The first guide groove (2) is provided with four, four first guide grooves (2) are evenly distributed on the pin shaft body (1) and along the circumference of the pin shaft body (1).
3. The pin with the locking structure of the bushing according to claim 1, characterized in that: The second guide groove (6) is provided with four, four second guide grooves (6) are evenly distributed on the plug-in slot (5) and along the circumference of the plug-in slot (5).
4. The pin with the locking structure of the bushing according to claim 1, characterized in that: The first guide groove (2) and the second guide groove (6) are staggered.
5. The pin with the locking structure of the bushing according to claim 1, characterized in that: The other side end surface of the pin shaft body (1) is provided with a ring groove (10), a plurality of springs (11) are arranged in the ring groove (10), and a plurality of ring plates (12) are arranged on the plurality of springs (11).
6. The pin with the locking structure of the bushing according to claim 5, characterized in that: Adjacent two springs (11) are provided with telescopic rods (13), and the two ends of the telescopic rod (13) are connected to the bottom surface of the ring groove (10) and the bottom surface of the ring plate (12) respectively.
7. The pin with the locking structure of the bushing according to claim 5, characterized in that: The spring (11) is provided with four, four springs (11) are evenly distributed along the circumference of the ring groove (10).
8. The pin with the locking structure of the bushing according to claim 5, characterized in that: The free length value of the spring (11) is greater than the depth value of the ring groove (10).