Pin shaft with anti-loosening structure

Abstract

The invention relates to the technical field of pin shafts, in particular to a pin shaft with an anti-loosening structure, which comprises a pin shaft body, an insertion hole is formed in the surface of the pin shaft body, limiting insertion columns are inserted into two ends of the insertion hole, a reserved groove is formed in one end of the pin shaft body, a traction strip is fixed at one end, extending out of the insertion hole, of each limiting insertion column, and a threaded column is arranged on the surface of the traction strip. The threaded columns are semi-cylinders with external threads, the threaded columns on the surfaces of the two traction strips are spliced to form a stud, and the stud is sleeved with a nut in a threaded mode. The pin shaft with the anti-loosening structure has the beneficial effects that the pin shaft can be easily inserted into a workpiece hole through the design of the limiting insertion column and the traction strip, and installation can be completed through simple pushing and screwing actions. By arranging the limiting inserting column, the inserting rod, the rubber sleeve, the rubber pad and other elastic components, double limitation on axial movement of the pin shaft is achieved.

Description

Technical Field

[0001] The invention relates to the field of pin shafts, in particular to a pin shaft with an anti-loosening structure. Background Art

[0002] In the field of mechanical connection and fixation, pins are a common connector widely used in various equipment and structures. However, during the use of traditional pins, there are often loose problems caused by factors such as vibration and impact, which not only affects the stability and reliability of the connection, but also may pose a threat to the safe operation of equipment and structures.

[0003] In order to solve the problem of pin loosening, people began to explore and study various anti-loosening structures. Among them, a common practice is to set limit devices at both ends of the pin to prevent it from loosening by limiting the axial movement of the pin. However, these limit devices are often complex in structure, inconvenient to install, and prone to damage or failure during use.

[0004] Therefore, it is necessary to design a pin with simple structure, convenient installation and significant anti-loosening effect to meet the requirements of various equipment and structures for connection stability and reliability. Summary of the invention

[0005] The object of the present invention is to provide a pin shaft with an anti-loosening structure to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a pin shaft with an anti-loosening structure, comprising a pin shaft body, a socket is provided on the surface of the pin shaft body, both ends of the socket are inserted with limiting plugs, one end of the pin shaft body is provided with a reserved groove, and a traction bar is fixed to the end of the limiting plug that extends out of the socket, and a threaded column is provided on the surface of the traction bar, and the threaded column is a semi-cylinder with an external thread. The threaded columns on the surfaces of the two traction bars are assembled into a stud, and a nut is threaded on the stud.

[0007] Preferably, the sum of the heights of the two limiting pins is greater than the depth of the insertion hole, a through hole is provided on the surface of one limiting pin, a rod is inserted into the inside of the through hole, one end of the rod is fixed to the surface of the other limiting pin, the height of the rod is greater than the height of the limiting pin, a rubber sleeve is fixed on one end of the rod extending out of the through hole, the rubber sleeve has a spherical structure, and the diameter of the rubber sleeve is greater than the aperture of the through hole.

[0008] Preferably, a rubber pad is fixed to one end of the limiting plug extending into the plug hole, the rubber pad is in the form of an annular sheet, and two groups of rubber pads are clamped between the two limiting plugs to generate elastic deformation.

[0009] Preferably, a rubber ring is sleeved and fixed on the rod body of the limiting plug post, and a plurality of rubber rings are provided, and the plurality of rubber rings are arranged and distributed at equal distances and sizes along the limiting plug post.

[0010] Preferably, the traction bar is an "L"-shaped plate, one end of the traction bar extends into the reserved groove, one end of the traction bar is provided with a notch, and the threaded column is fixed on the surface of the notch.

[0011] Preferably, a buckle groove is provided on the surface of the threaded column, the buckle groove passes through one end of the traction bar, and a limiting block is inserted into the two buckle grooves between the two threaded columns, and one end of the limiting block is fixed to the surface of the reserved groove.

[0012] Preferably, a rubber sleeve is fixedly sleeved on the outer side of the limit block.

[0013] Preferably, a screw handle is fixed on the surface of the nut.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The pin shaft with anti-loosening structure, the design of the limit plug post and the traction bar proposed in the present invention enables the pin shaft to be easily inserted into the hole of the workpiece, and the installation can be completed by simple pushing and twisting. By providing the limit plug post and the plug rod, as well as elastic components such as the rubber sleeve and the rubber pad, the present invention realizes the double restriction of the axial movement of the pin shaft. The design of the traction bar and the threaded column enables the two limit plug posts to be tightly clamped together after connection, avoiding the problem of loosening caused by vibration or impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention;

[0017] Figure 2 It is a side view of the structure of the present invention;

[0018] Figure 3 for Figure 2 Structural cross-section view at AA in the middle;

[0019] Figure 4 for Figure 3 A schematic diagram of the structure enlargement in the middle;

[0020] Figure 5 This is a schematic diagram of the connection structure of two limit plug posts of the present invention;

[0021] Figure 6 This is a schematic diagram of the connection structure between the limit plug column and the plug rod of the present invention;

[0022] Figure 7 This is a schematic diagram of the connection structure between the limit plug post and the traction bar of the present invention;

[0023] Figure 8 This is a schematic diagram of the pin body structure of the present invention;

[0024] Fig. 9It is a schematic diagram of the connection structure between the nut and the screw handle of the present invention.

[0025] In the figure: the pin body 1, the insertion hole 2, the limit plug 3, the reserved groove 4, the traction bar 5, the missing groove 6, the threaded column 7, the buckle groove 8, the limit block 9, the rubber sleeve 10, the nut 11, the screw handle 12, the through hole 13, the plug rod 14, the rubber sleeve 15, the rubber pad 16, and the rubber ring 17. DETAILED DESCRIPTION

[0026] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-Figure 9 The present invention provides a technical solution: a pin shaft with an anti-loosening structure, comprising a pin shaft body 1, a plug hole 2 is provided on the surface of the pin shaft body 1, both ends of the plug hole 2 are plugged with limiting plug posts 3, the sum of the heights of the two limiting plug posts 3 is greater than the depth of the plug hole 2, a through hole 13 is provided on the surface of one limiting plug post 3, a plug rod 14 is plugged inside the through hole 13, one end of the plug rod 14 is fixed on the surface of another limiting plug post 3, the height of the plug rod 14 is greater than the height of the limiting plug post 3, and the plug rod One end of 14 extending out of the through hole 13 is sleeved and fixed with a rubber sleeve 15, which is in a spherical structure. The diameter of the rubber sleeve 15 is larger than the aperture of the through hole 13. One end of the limiting plug 3 extending into the plug hole 2 is fixed with a rubber pad 16, which is in a ring-shaped sheet. Two groups of rubber pads 16 are clamped between the two limiting plugs 3 to generate elastic deformation; a rubber ring 17 is sleeved and fixed on the rod body of the limiting plug 3, and a plurality of rubber rings 17 are provided, and the plurality of rubber rings 17 are arranged and distributed along the limiting plug 3 at equal distances and sizes.

[0028] When in use, after the pin shaft body 1 passes through the hole on the surface of the workpiece, the two limit pins 3 are respectively inserted into the two ends of the socket 2, and the two limit pins 3 are pushed together. In this process, the insertion rod 14 and the rubber sleeve 15 pass through the through hole 13 until the rubber sleeve 15 extends out of the through hole 13. At this time, the rubber sleeve 15 realizes the pre-limiting effect of connecting the two limit pins 3, and the rubber ring 17 is clamped between the socket 2 and the limit pin 3, further preventing the limit pin 3 from falling off from the socket 2.

[0029] A reserved groove 4 is provided at one end of the pin shaft body 1, and a traction bar 5 is fixed to one end of the limiting plug column 3 extending out of the insertion hole 2. A threaded column 7 is provided on the surface of the traction bar 5. The threaded column 7 is a semi-cylinder with an external thread. The threaded columns 7 on the surfaces of two traction bars 5 are assembled into a stud, and a nut 11 is threaded on the stud. The traction bar 5 is an "L"-shaped plate, and one end of the traction bar 5 extends into the reserved groove 4. A missing groove 6 is provided at one end of the traction bar 5, and the threaded column 7 is fixed on the surface of the missing groove 6. A buckle groove 8 is provided on the surface of the threaded column 7, and the buckle groove 8 runs through one end of the traction bar 5. A limiting block 9 is inserted into the two buckle grooves 8 between the two threaded columns 7, and one end of the limiting block 9 is fixed to the surface of the reserved groove 4. A rubber sleeve 10 is fixed on the outer side of the limiting block 9, and a screw handle 12 is fixed on the surface of the nut 11.

[0030] When the two limit plugs 3 are connected, the two traction bars 5 are both extended into the reserved groove 4, and the screwing handle 12 is pinched by hand to put the nut 11 on the stud surrounded by the two threaded columns 7, and the nut 11 is screwed and connected with the stud. At this time, the two threaded columns 7 tightly clamp the limit block 9 and the rubber sleeve 10, and the two traction bars 5 are connected and limited. The traction bar 5 pulls the limit plug 3, thereby avoiding the problem of the limit plug 3 falling loose.

[0031] The detailed process of using a pin with an anti-loosening structure is as follows:

[0032] Check the size of the hole on the surface of the workpiece to ensure that it matches the diameter of the pin body 1. Clean the hole in the workpiece to remove impurities and rust to ensure that the pin can be inserted smoothly. Check the pin assembly: verify whether the pin body 1, the socket 2, the limit plug 3, the plug rod 14, the rubber sleeve 15, the rubber pad 16, the rubber ring 17 and other components are intact. Ensure that the spherical structure of the rubber sleeve 15 is intact and the rubber pad 16 and the rubber ring 17 have good elasticity.

[0033] Insert the pin body 1 through the hole on the surface of the workpiece, and ensure that the pin body 1 is fully inserted and in the correct position. Insert the two limit pins 3 from both ends of the socket 2, and ensure that the rubber pads 16 of the limit pins 3 contact the surface of the workpiece. Gently push the two limit pins 3 to bring them closer, and at the same time, insert the rod 14 through the through hole 13 of one of the limit pins 3 until the rubber sleeve 15 extends out of the through hole 13. After the rubber sleeve 15 extends out, check whether it fits tightly outside the through hole 13 to achieve the pre-limiting of the two limit pins 3. Confirm whether the rubber ring 17 is evenly distributed between the socket 2 and the limit pins 3 to provide additional anti-falling protection.

[0034] Align the two traction bars 5 with the reserved groove 4 respectively, and ensure that one end of the traction bar 5 extends into the reserved groove 4. Verify the position of the missing groove 6 and the threaded column 7 to ensure that the two threaded columns 7 can be assembled into a complete stud. Insert the limit block 9 into the buckle groove 8 between the two threaded columns 7, and ensure that one end of the limit block 9 is fixed on the surface of the reserved groove 4. Sleeve the rubber sleeve 10 on the outside of the limit block 9 to increase the friction and prevent the limit block 9 from loosening. Pinch the screw handle 12 by hand, sleeve the nut 11 on the stud surrounded by the two threaded columns 7, and tighten the nut 11 to ensure that the two traction bars 5 are firmly connected. Confirm whether the pin body 1, the limit plug 3, the traction bar 5 and other components are installed in place without looseness. Gently shake the pin body 1 to check whether there is any shaking or looseness.

[0035] 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 with an anti-loosening structure, comprising a pin body (1), a surface of the pin body (1) is provided with an insertion hole (2), and the characteristics are: Both ends of the insertion hole (2) are plugged with a limit plug post (3), one end of the pin shaft body (1) is provided with a reserved groove (4), one end of the limit plug post (3) extending out of the insertion hole (2) is fixed with a traction bar (5), the surface of the traction bar (5) is provided with a threaded column (7), the threaded column (7) is a semi-cylinder with an external thread, the threaded columns (7) on the surfaces of the two traction bars (5) are assembled into a stud, and a nut (11) is threadedly mounted on the stud.

2. The pin shaft with an anti-loosening structure according to claim 1, characterized in that: The sum of the heights of the two limiting plug posts (3) is greater than the depth of the insertion hole (2); a through hole (13) is provided on the surface of one limiting plug post (3); a plug rod (14) is inserted into the inside of the through hole (13); one end of the plug rod (14) is fixed to the surface of the other limiting plug post (3); the height of the plug rod (14) is greater than the height of the limiting plug post (3); one end of the plug rod (14) extending out of the through hole (13) is sleeved and fixed with a rubber sleeve (15); the rubber sleeve (15) is in a spherical structure; and the diameter of the rubber sleeve (15) is greater than the aperture of the through hole (13).

3. The pin shaft with an anti-loosening structure according to claim 1, characterized in that: A rubber pad (16) is fixed to one end of the limiting plug post (3) extending into the insertion hole (2); the rubber pad (16) is in the form of an annular sheet; two groups of rubber pads (16) are clamped between two limiting plug posts (3) to generate elastic deformation.

4. The pin shaft with an anti-loosening structure according to claim 1, characterized in that: A rubber ring (17) is sleeved and fixed on the rod body of the limiting plug post (3), and a plurality of rubber rings (17) are provided. The plurality of rubber rings (17) are arranged and distributed at equal distances and in equal sizes along the limiting plug post (3).

5. The pin shaft with an anti-loosening structure according to claim 1, characterized in that: The traction bar (5) is an "L"-shaped plate, one end of the traction bar (5) extends into the reserved groove (4), one end of the traction bar (5) is provided with a notch (6), and a threaded column (7) is fixed on the surface of the notch (6).

6. The pin shaft with an anti-loosening structure according to claim 5, characterized in that: A buckle groove (8) is provided on the surface of the threaded column (7), the buckle groove (8) passes through one end of the traction bar (5), and a limiting block (9) is inserted into the two buckle grooves (8) between the two threaded columns (7), and one end of the limiting block (9) is fixed on the surface of the reserved groove (4).

7. The pin shaft with an anti-loosening structure according to claim 1, characterized in that: A rubber sleeve (10) is sleeved and fixed on the outer side of the limit block (9).

8. The pin shaft with an anti-loosening structure according to claim 1, characterized in that: A screwing handle (12) is fixed on the surface of the nut (11).

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