Pin shaft with shaft sleeve locking mechanism

Abstract

The utility model relates to the technical field of pin shafts, in particular to a pin shaft with a shaft sleeve locking mechanism, which comprises a pin shaft, the pin shaft comprises a shaft body, one end of the shaft body is fixedly connected with an abutting sheet and a shaft cap, the other end of the shaft body is provided with a threaded head, the shaft body is sleeved with a shaft sleeve, and the outer side of the threaded head is fixedly connected with a positioning sheet and a fastening nut. The pin shaft has the advantages that the corresponding locking structures are arranged on the pin shaft and in the two ends of the shaft sleeve, after the pin shaft is sleeved with the shaft sleeve, the shaft sleeve can be locked, the shaft sleeve cannot rotate or slide on the pin shaft, and therefore the stability of the pin shaft in the using process is improved; and in the relatively stable state, the shaft sleeve cannot generate friction damage to the surface of the pin shaft, the protection effect on the pin shaft is improved, the service life of the pin shaft can be effectively prolonged, the reliability of the pin shaft in use is improved, the use effect is improved, the structure is simple, mounting and dismounting are convenient and fast, and the use convenience is improved.

Description

Technical Field

[0001] The utility model relates to the field of pin shafts, in particular to a pin shaft with a shaft sleeve locking mechanism. Background Art

[0002] The pin is a type of standardized fastener that can be used for static fixed connection or relative movement with the connected parts. It is mainly used at the hinge of two parts to form a hinge connection. Sometimes, in order to increase the wear resistance of the pin and reduce the friction noise at the pin connection, the pin is used in conjunction with a sleeve. The sleeve is set on the outside of the pin and the sleeve is in direct contact with the connecting part. This can effectively reduce the wear on the pin caused by long-term use, extend the service life of the pin, and improve the reliability of the pin during use. However, in the prior art, the sleeve and the pin are generally movably connected, which causes relative movement between the pin and the sleeve, and then the sleeve will also cause friction damage to the pin. Therefore, a pin structure that can lock the sleeve is needed to ensure the stability of the sleeve on the outside of the pin, reduce the wear of the sleeve on the pin, and improve the durability of the pin. To this end, the utility model proposes a pin with a sleeve locking mechanism to solve the above-mentioned problems. Utility Model Content

[0003] The purpose of the utility model is to provide a pin shaft with a sleeve locking mechanism to solve the problem proposed in the above background technology that the stability of the sleeve cannot be guaranteed when the sleeve and the pin shaft are used in combination, resulting in friction damage to the pin shaft caused by the sleeve, and the problem of rapid wear of the pin shaft and shortened service life cannot be fundamentally solved.

[0004] To achieve the above object, the utility model provides the following technical solution: a pin shaft with a sleeve locking mechanism, comprising

[0005] The pin shaft includes a shaft body, one end of the shaft body is fixedly connected to the supporting plate and the shaft cap, the other end is provided with a threaded head, the outer sleeve of the shaft body is provided with a shaft sleeve, the outer side of the threaded head is fastened with a positioning plate and a fastening nut, and one end of the shaft body and one side of the positioning plate are provided with locking structures corresponding to the inside of the two ends of the shaft sleeve.

[0006] Preferably, a supporting plate is fixedly connected to one end of the shaft body, a shaft cap is welded to the other side of the supporting plate, a threaded head is provided at the other end of the shaft body, a shaft sleeve is sleeved on the outside of the shaft body, and the shaft sleeve is fastened and locked by limiting the position through a locking structure and connecting a positioning plate and a fastening nut to the outside of the threaded head.

[0007] Preferably, the locking structure includes a limit block protruding from the inner side of the supporting piece at one end of the shaft body, and a positioning block protruding from the outer side of the shaft body on the same side. The limit blocks and the positioning blocks are correspondingly arranged in a plurality of groups evenly distributed in a circular array, and each group of the limit blocks and the positioning blocks are not on the same horizontal line but are staggered.

[0008] Preferably, the locking structure also includes limit grooves opened on the inner sides of both ends of the sleeve, and the limit grooves are provided with a plurality of groups evenly distributed in a circular array, and the limit grooves correspond to the limit blocks and the positioning blocks. An arc-shaped rotation groove is opened at the bottom of the limit groove, and a positioning groove is opened at the bottom of the end of the rotation groove. The positioning block is inserted into the bottom of the limit groove and rotated in the rotation groove and inserted into the positioning groove. When the positioning block is inserted into the positioning groove, the limit block is inserted into the limit groove. The limit grooves, rotation grooves and positioning grooves set at both ends of the sleeve have the same structure.

[0009] Preferably, the locking structure also includes a positioning piece, a side of the positioning piece close to the sleeve is protruded with a supporting ring, the supporting ring is sleeved on the outside of the end of the shaft body, the end of the supporting ring is supported on one end of the sleeve, and the end of the supporting ring is also protruded with an insert block, the insert block corresponds to the limiting groove on the inner side of the corresponding end of the sleeve and is inserted into the limiting groove, and the outer side of the positioning piece is fastened in place by a fastening nut.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] The utility model provides corresponding locking structures on the pin shaft and in the two ends of the shaft sleeve, which can lock the shaft sleeve after the shaft sleeve is sleeved on the pin shaft, so that the shaft sleeve will not rotate or slide on the pin shaft, thereby improving the stability of the pin shaft when in use, and the relatively stable state will prevent the shaft sleeve from causing friction damage to the surface of the pin shaft, thereby increasing the protection effect on the pin shaft, effectively extending the service life of the pin shaft, and increasing the reliability of the pin shaft when in use, increasing the use effect, having a simple structure, and being quick and easy to install and disassemble, thereby increasing the convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 It is a schematic diagram of the structural disassembly of the utility model;

[0014] Figure 3 This is a schematic diagram of the cross-sectional structure of the utility model;

[0015] Figure 4 for Figure 3 A schematic diagram of the enlarged structure at point A in the middle.

[0016] In the figure: 1 pin shaft, 2 sleeve, 3 support plate, 4 fastening nut, 5 shaft body, 6 positioning plate, 7 shaft cap, 8 threaded head, 9 limit groove, 10 support ring, 11 insert block, 12 positioning block, 13 rotating groove, 14 positioning groove, 15 limit block. DETAILED DESCRIPTION

[0017] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] Embodiment 1

[0019] See also Figure 1-Figure 4 The utility model provides a technical solution: a pin shaft with a sleeve locking mechanism, comprising

[0020] The pin shaft 1 includes a shaft body 5, one end of the shaft body 5 is fixedly connected to the supporting plate 3 and the shaft cap 7, and the other end is provided with a threaded head 8. The shaft body 5 is outerly provided with a sleeve 2, and the outer side of the threaded head 8 is fastened with a positioning plate 6 and a fastening nut 4. One end of the shaft body 5 and one side of the positioning plate 6 are provided with locking structures corresponding to the inside of the two ends of the sleeve 2.

[0021] Embodiment 2

[0022] On the basis of the first embodiment, a supporting piece 3 is fixedly connected to one end of the shaft body 5, a shaft cap 7 is welded to the other side of the supporting piece 3, a threaded head 8 is arranged at the other end of the shaft body 5, a shaft sleeve 2 is sleeved on the outside of the shaft body 5, and the shaft sleeve 2 is fastened and locked by a locking structure and a positioning piece 6 and a fastening nut 4 are connected to the outside of the threaded head 8;

[0023] The locking structure includes a limit block 15 protruding from the inner side of the supporting piece 3 at one end of the shaft body 5, and a positioning block 12 protruding from the outer side of the shaft body 5 on the same side. The limit blocks 15 and the positioning blocks 12 are correspondingly arranged in a plurality of groups evenly distributed in a circular array. Each group of limit blocks 15 and the positioning blocks 12 are not on the same horizontal line, but are staggered.

[0024] Embodiment 3

[0025] On the basis of the second embodiment, the locking structure also includes a limit groove 9 opened on the inner side of both ends of the shaft sleeve 2, and the limit groove 9 is provided with a plurality of groups evenly distributed in a circular array. The limit groove 9 corresponds to the limit block 15 and the positioning block 12. An arc-shaped rotation groove 13 is opened at the bottom of the limit groove 9, and a positioning groove 14 is opened at the bottom of the end of the rotation groove 13. The positioning block 12 is inserted into the bottom of the limit groove 9 and rotates in the rotation groove 13 and is inserted into the positioning groove 14. When the positioning block 12 is inserted into the positioning groove 14, the limit block 15 is inserted into the limit groove 9. The limit grooves 9, the rotation grooves 13 and the positioning grooves 14 at both ends of the shaft sleeve 2 have the same structure as the shaft sleeve 2. When it is sleeved on the outside of the shaft body 5, the positioning block 12 is first inserted into the limiting groove 9. After being inserted to the bottom of the limiting groove 9, the shaft sleeve 2 is rotated so that the positioning block 12 rotates to the end in the rotating groove 13. At this time, the limiting block 15 corresponds to the limiting groove 9, and the positioning block 12 corresponds to the positioning groove 14. Then the shaft sleeve 2 is pushed forward to insert the limiting block 15 into the limiting groove 9 and insert the positioning block 12 into the positioning groove 14. The limiting effect can be effectively improved, and the effect of simultaneously locking the shaft sleeve 2 in the axial and circumferential directions is achieved. By cooperating with the limiting groove 9 and the positioning groove 14, the stability of the shaft sleeve 2 on the outside of the shaft body 5 can be effectively improved.

[0026] Embodiment 4

[0027] On the basis of embodiment three, the locking structure also includes a positioning piece 6, and a supporting ring 10 is protruding from one side of the positioning piece 6 close to the sleeve 2. The supporting ring 10 is sleeved on the outer side of the end of the shaft body 5, and the end of the supporting ring 10 is supported on one end of the sleeve 2. The end of the supporting ring 10 is also protruding with an insert block 11, and the insert block 11 corresponds to the limiting groove 9 provided on the inner side of the corresponding end sleeve 2 and is inserted into the limiting groove 9. The outer side of the positioning piece 6 is fastened in place by a fastening nut 4, and the other end of the sleeve 2 can be positioned by the positioning piece 6, thereby further improving the stability of the sleeve 2, preventing the sleeve 2 from rotating and sliding on the pin shaft 1, affecting the stability of the pin shaft 1 during use, and preventing the sleeve 2 from causing friction damage to the surface of the pin shaft 1.

[0028] In actual use, by providing corresponding locking structures on the pin shaft 1 and at both ends of the sleeve 2, the sleeve 2 can be locked after the sleeve 2 is sleeved on the pin shaft 1, so that the sleeve 2 will not rotate or slide on the pin shaft 1, thereby improving the stability of the pin shaft 1 during use, and the relatively stable state prevents the sleeve 2 from causing friction damage to the surface of the pin shaft 1, thereby increasing the protection effect on the pin shaft 1, effectively extending the service life of the pin shaft 1, and increasing the reliability of the pin shaft 1 during use, increasing the use effect, having a simple structure, and convenient and quick installation and disassembly, thereby increasing the convenience of use.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pin shaft with a sleeve locking mechanism, characterized in that: include A pin shaft (1), the pin shaft (1) comprising a shaft body (5), one end of the shaft body (5) being fixedly connected to a supporting piece (3) and a shaft cap (7), the other end being provided with a threaded head (8), the shaft body (5) being provided with a shaft sleeve (2) on its outer surface, the outer side of the threaded head (8) being fastened with a positioning piece (6) and a fastening nut (4), and one end of the shaft body (5) and one side of the positioning piece (6) being provided with locking structures corresponding to the inside of the two ends of the shaft sleeve (2).

2. A pin shaft with a sleeve locking mechanism according to claim 1, characterized in that: One end of the shaft body (5) is fixedly connected to a supporting piece (3), the other side of the supporting piece (3) is welded to a shaft cap (7), the other end of the shaft body (5) is provided with a threaded head (8), a shaft sleeve (2) is sleeved on the outside of the shaft body (5), and the shaft sleeve (2) is fastened and locked by limiting the position through a locking structure and connecting a positioning piece (6) and a fastening nut (4) on the outside of the threaded head (8).

3. A pin shaft with a sleeve locking mechanism according to claim 2, characterized in that: The locking structure comprises a limit block (15) protruding from the inner side of the abutting piece (3) at one end of the shaft body (5), and a positioning block (12) protruding from the outer side of the shaft body (5) on the same side. The limit blocks (15) and the positioning blocks (12) are arranged in a plurality of groups evenly distributed in a circular array, and each group of the limit blocks (15) and the positioning blocks (12) are not located on the same horizontal line, but are arranged in a staggered manner.

4. A pin shaft with a sleeve locking mechanism according to claim 3, characterized in that: The locking structure further comprises limiting grooves (9) provided on the inner sides of both ends of the shaft sleeve (2); the limiting grooves (9) are provided with a plurality of groups evenly distributed in a circular array; the limiting grooves (9) correspond to the limiting blocks (15) and the positioning blocks (12); an arc-shaped rotation groove (13) is provided at the bottom of the limiting groove (9); a positioning groove (14) is provided at the bottom of the end of the rotation groove (13); the positioning block (12) is inserted into the bottom of the limiting groove (9) and rotates in the rotation groove (13) and is inserted into the positioning groove (14); when the positioning block (12) is inserted into the positioning groove (14), the limiting block (15) is inserted into the limiting groove (9); the limiting grooves (9), the rotation grooves (13) and the positioning grooves (14) provided at both ends of the shaft sleeve (2) have the same structure.

5. A pin shaft with a sleeve locking mechanism according to claim 4, characterized in that: The locking structure also includes a positioning piece (6), a side of the positioning piece (6) close to the shaft sleeve (2) is provided with a supporting ring (10), the supporting ring (10) is sleeved on the outer side of the end of the shaft body (5), the end of the supporting ring (10) is supported on one end of the shaft sleeve (2), and the end of the supporting ring (10) is also provided with an insert block (11), the insert block (11) corresponds to a limiting groove (9) provided on the inner side of the corresponding end of the shaft sleeve (2) and is inserted into the limiting groove (9), and the outer side of the positioning piece (6) is fixed in place by a fastening nut (4).

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