Pin shaft with sealing structure

Abstract

The invention relates to the technical field of pin shafts, in particular to a pin shaft with a sealing structure, which comprises a pin shaft body, an extension column is integrally formed at one end of the pin shaft body, a rod body of the pin shaft body is sleeved with a wear-resistant sleeve, the outer side of the wear-resistant sleeve is fixedly sleeved with a rubber sealing cover, and an insertion hole is formed in the surface of the extension column. A rod body of the extension column is sleeved with a mounting sleeve, and a barrier strip is inserted into the surface of the mounting sleeve; the pin shaft with the sealing structure has the beneficial effects that the pin shaft body is sleeved with the wear-resistant sleeve and the rubber sealing cover, so that the effective sealing structure is formed, liquid or gas can be prevented from leaking from a connecting part, and the performance and safety of equipment are guaranteed.

Description

Technical Field

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

[0002] In the field of mechanical engineering and assembly, pins are a common connection element widely used in various equipment and structures to achieve the fixation, connection or rotation between parts. However, traditional pins have some limitations in design and use, especially in situations where sealing and anti-slip functions are required.

[0003] Traditional pins usually only have basic connection functions and lack effective sealing structures, which leads to leakage when used in liquid or gas environments, affecting the performance and safety of the equipment. In addition, traditional pins often lack effective anti-drop measures after installation. Once subjected to external impact or vibration, they are prone to loosening or falling off, resulting in connection failure and even accidents. Summary of the invention

[0004] The object of the present invention is to provide a pin shaft with a sealing structure to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a pin shaft with a sealing structure, comprising a pin shaft body, an extension column is integrally formed at one end of the pin shaft body, a wear-resistant sleeve is sleeved on the rod body of the pin shaft body, a rubber sealing cover is sleeved and fixed on the outer side of the wear-resistant sleeve, an insertion hole is opened on the surface of the extension column, an installation sleeve is sleeved on the rod body of the extension column, and a baffle is inserted on the surface of the installation sleeve.

[0006] Preferably, the rod diameter of the extension column is smaller than the rod diameter of the pin body, the wear-resistant sleeve is a round tube with an "L"-shaped cross section, and the rubber sealing cover is a round tube with an "L"-shaped cross section.

[0007] Preferably, a limiting groove is provided on the inner wall of the wear-resistant sleeve, and the limiting groove is a "convex" shaped circular ring groove. A swivel is rotatably connected inside the limiting groove. The swivel is a circular ring plate with a "convex" shaped cross section. A traction screw is fixed on the surface of the swivel, and the traction screw passes through the pin shaft body. A nut is threadedly mounted on the end of the traction screw away from the swivel.

[0008] Preferably, the pin shaft body is provided with a through hole three at one end close to the extension column, and two through holes three are provided, and the two through holes three are symmetrically distributed about the extension column, the traction screw and the through hole three correspond one to one, the traction screw is inserted into the through hole three, and the hole depth of the through hole three is smaller than the rod length of the traction screw.

[0009] Preferably, a through hole 1 is provided on the surface of the installation sleeve, and two through holes 1 are provided, and the two through holes 1 are symmetrically distributed about the installation sleeve, and the baffle bar corresponds to the through holes 1 one by one, and the baffle bar passes through the through hole 1 and is inserted into the socket.

[0010] Preferably, the surface of the baffle is provided with a second through-hole, an elastic rubber band is inserted into the second through-hole, both ends of the elastic rubber band are fixed on the surface of the mounting sleeve, and the two ends of the elastic rubber band are respectively distributed on both sides of the baffle.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] The pin shaft with a sealing structure proposed in the present invention forms an effective sealing structure by sleeve-mounting a wear-resistant sleeve and a rubber sealing cover on the pin shaft body, which can prevent liquid or gas from leaking from the connection part and ensure the performance and safety of the equipment. The wear-resistant sleeve and the pin shaft body are connected by a swivel and a traction screw to achieve the function of relative rotation, so that the pin shaft can rotate flexibly after installation to meet various complex working conditions. By sleeve-mounting an installation sleeve on the extension column and using the cooperation of a baffle bar and an elastic rubber band, the anti-slip limit of the pin shaft is achieved, which effectively prevents the pin shaft from loosening or falling off when it is impacted or vibrated by external force after installation, thereby improving the stability and reliability of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the present invention;

[0014] Figure 2 It is a schematic diagram of the connection structure between the pin body and the traction screw of the present invention;

[0015] Figure 3 It is a side view of the structure of the present invention;

[0016] Figure 4 for Figure 3 Structural cross-section view at AA in the middle;

[0017] Figure 5 for Figure 4 A schematic diagram of the structure enlargement in the middle;

[0018] Figure 6 This is a schematic diagram of the connection structure between the wear-resistant sleeve and the rubber sealing cover of the present invention;

[0019] Figure 7 It is a schematic diagram of the connection structure between the swivel and the traction screw of the present invention;

[0020] Figure 8 This is a schematic diagram of the connection structure between the mounting sleeve and the baffle bar of the present invention;

[0021] Fig. 9 It is a schematic diagram of the connection structure between the pin body and the extension column of the present invention.

[0022] In the figure: the pin body 1, the extension column 2, the wear-resistant sleeve 3, the limit groove 4, the swivel 5, the traction screw 6, the nut 7, the rubber sealing cover 8, the jack 9, the mounting sleeve 10, the first perforation 11, the baffle 12, the second perforation 13, the elastic rubber band 14, and the third perforation 15. DETAILED DESCRIPTION

[0023] 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.

[0024] See also Figure 1-Figure 9 The present invention provides a technical solution: a pin with a sealing structure, comprising a pin body 1, an extension column 2 is integrally formed at one end of the pin body 1, a wear-resistant sleeve 3 is sleeved on the rod body of the pin body 1, a rubber sealing cover 8 is sleeved and fixed on the outer side of the wear-resistant sleeve 3, the rod diameter of the extension column 2 is smaller than the rod diameter of the pin body 1, the wear-resistant sleeve 3 is a round tube with an "L"-shaped cross section, and the rubber sealing cover 8 is a round tube with an "L"-shaped cross section; a limiting groove 4 is provided on the inner wall of the wear-resistant sleeve 3, the limiting groove 4 is a "convex"-shaped circular groove, and the inner wall of the limiting groove 4 is provided with a "convex"-shaped circular groove. The swivel 5 is rotatably connected to the main body 1 of the pin shaft 1, and the swivel 5 is a circular ring plate with a "convex"-shaped cross-section. A traction screw 6 is fixed on the surface of the swivel 5, and the traction screw 6 passes through the pin shaft body 1. The end of the traction screw 6 away from the swivel 5 is sleeved with a nut 7 threaded on it. The end of the pin shaft body 1 close to the extension column 2 is provided with a through hole 3 15. There are two through holes 3 15, and the two through holes 3 15 are symmetrically distributed about the extension column 2. The traction screw 6 and the through holes 3 15 correspond to each other one by one. The traction screw 6 is inserted in the through hole 3 15, and the hole depth of the through hole 3 15 is less than the rod length of the traction screw 6. When in use, the wear-resistant sleeve 3 is sleeved on the pin shaft body 1. During the sleeve installation process, the traction screw 6 passes through the through hole 3 15, and the nut 7 is screwed and locked on the end of the traction screw 6. At this time, the wear-resistant sleeve 3 is completely sleeved on the pin shaft body 1. When the wear-resistant sleeve 3 is moved, the traction screw 6 pulls and limits the swivel 5, and the rubber sealing cover 8 rotates with the swivel 5 as the central axis, and the rubber sealing cover 8 is sleeved on the outside of the wear-resistant sleeve 3. When the pin shaft body 1 and the wear-resistant sleeve 3 pass through the connecting component, the rubber sealing cover 8 is clamped between the wear-resistant sleeve 3 and the hole of the connecting component to play a sealing role, and the wear-resistant sleeve 3 and the pin shaft body 1 can rotate relative to each other to ensure the stability of the pin shaft body 1 after installation.

[0025] A plug hole 9 is provided on the surface of the extension column 2, a mounting sleeve 10 is sleeved on the rod body of the extension column 2, a baffle 12 is inserted on the surface of the mounting sleeve 10, a through hole 11 is provided on the surface of the mounting sleeve 10, two through holes 11 are provided, and the two through holes 11 are symmetrically distributed about the mounting sleeve 10, the baffle 12 and the through hole 11 correspond one to one, and the baffle 12 passes through the through hole 11 and is inserted into the plug hole 9; a through hole 2 13 is provided on the surface of the baffle 12, an elastic rubber band 14 is inserted inside the through hole 2 13, both ends of the elastic rubber band 14 are fixed on the surface of the mounting sleeve 10, and the two ends of the elastic rubber band 14 are respectively distributed on both sides of the baffle 12.

[0026] When in use, after the pin shaft body 1 equipped with the wear-resistant sleeve 3 is passed through the connecting component, two fingers are used to stretch the two baffles 12 respectively, and the baffles 12 stretch the corresponding elastic rubber bands 14 to produce elastic deformation, and then the installation sleeve 10 is sleeved on the extension column 2. After the baffles 12 are released, the elastic rubber band 14 rebounds and resets. The elastic rubber band 14 rebounds and drives the corresponding baffles 12 to be inserted into the socket 9, thereby realizing the anti-slip limit of the installation sleeve 10, and the baffles 12 serve as an anti-slip structure for the pin shaft body 1 after being installed in the connecting component.

[0027] The detailed use process of the pin with a sealing structure is as follows:

[0028] Confirm that the required pin body 1 and its matching components (wear sleeve 3, rubber sealing cover 8, installation sleeve 10, etc.) are complete and intact. Check whether the dimensions and specifications of the pin body 1, wear sleeve 3 and rubber sealing cover 8 meet the requirements of the connecting component. Sleeve the wear sleeve 3 on the pin body 1 to ensure that the "L"-shaped section of the wear sleeve 3 fits tightly with the rod body of the pin body 1. During the process of sleeve wear sleeve 3, pay attention to the traction screw 6 passing through the through hole 3 15 on the pin body 1. Screw and lock the nut 7 on the end of the traction screw 6 to ensure that the wear sleeve 3 is firmly fixed on the pin body 1. Sleeve the rubber sealing cover 8 on the outside of the wear sleeve 3 to ensure that the "L"-shaped section of the rubber sealing cover 8 fits tightly with the wear sleeve 3. Pass the assembled pin body 1 (including the wear sleeve 3 and the rubber sealing cover 8) through the hole of the connecting component. Ensure that the rubber sealing cover 8 is clamped between the wear sleeve 3 and the hole of the connecting component to play a sealing role. Verify whether the pin body 1 is fully inserted into the connecting component and ensure that it is positioned accurately. Sleeve the installation sleeve 10 on the extension column 2 to ensure that the installation sleeve 10 fits tightly with the extension column 2. Use two fingers to stretch the two baffles 12 respectively, so that the elastic rubber band 14 corresponding to the baffle 12 produces elastic deformation. Align the stretched baffle 12 with the perforation 11 on the installation sleeve 10 and insert it into the perforation 11. After releasing the baffle 12, the elastic rubber band 14 rebounds and resets, driving the baffle 12 to insert into the socket 9 on the extension column 2. Confirm that the baffle 12 is fully inserted into the socket 9 to achieve anti-slip limit for the installation sleeve 10. Check whether the components such as the pin body 1, wear-resistant sleeve 3, rubber sealing cover 8 and installation sleeve 10 are installed in place and firmly. Test the rotation flexibility of the pin body 1 in the connecting component to ensure that there is no jamming. Check the sealing effect of the rubber sealing cover 8 to ensure that there is no leakage. Verify the anti-dropping effect of the blocking strip 12 and the elastic rubber band 14 to ensure that the pin body 1 will not drop out of the connecting component.

[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 with a sealing structure, comprising a pin body (1), characterized in that: An extension column (2) is integrally formed at one end of the pin shaft body (1); a wear-resistant sleeve (3) is sleeved on the rod body of the pin shaft body (1); a rubber sealing cover (8) is sleeved and fixed on the outer side of the wear-resistant sleeve (3); a plug hole (9) is opened on the surface of the extension column (2); a mounting sleeve (10) is sleeved on the rod body of the extension column (2); a retaining strip (12) is inserted on the surface of the mounting sleeve (10).

2. The pin shaft with a sealing structure according to claim 1, characterized in that: The rod diameter of the extension column (2) is smaller than the rod diameter of the pin shaft body (1); the wear-resistant sleeve (3) is a round tube with an "L"-shaped cross section; and the rubber sealing cover (8) is a round tube with an "L"-shaped cross section.

3. The pin shaft with a sealing structure according to claim 1, characterized in that: The inner wall of the wear-resistant sleeve (3) is provided with a limiting groove (4), which is a convex circular groove. A rotating ring (5) is rotatably connected inside the limiting groove (4), and the rotating ring (5) is a circular plate with a convex cross section. A traction screw (6) is fixed on the surface of the rotating ring (5), and the traction screw (6) passes through the pin shaft body (1). A nut (7) is threadedly mounted on one end of the traction screw (6) away from the rotating ring (5).

4. The pin shaft with a sealing structure according to claim 3, characterized in that: The pin shaft body (1) is provided with a through hole (15) at one end close to the extension column (2), and two through holes (15) are provided. The two through holes (15) are symmetrically distributed about the extension column (2), and the traction screw rod (6) and the through hole (15) correspond one to one. The traction screw rod (6) is inserted into the through hole (15), and the hole depth of the through hole (15) is less than the rod length of the traction screw rod (6).

5. The pin shaft with a sealing structure according to claim 1, characterized in that: The surface of the installation sleeve (10) is provided with a through hole (11), two through holes (11) are provided, and the two through holes (11) are symmetrically distributed with respect to the installation sleeve (10), the blocking bar (12) and the through hole (11) correspond one to one, and the blocking bar (12) passes through the through hole (11) and is inserted into the insertion hole (9).

6. The pin shaft with a sealing structure according to claim 1, characterized in that: The surface of the baffle (12) is provided with a second perforation (13), an elastic rubber band (14) is inserted into the interior of the second perforation (13), both ends of the elastic rubber band (14) are fixed on the surface of the mounting sleeve (10), and the two ends of the elastic rubber band (14) are respectively distributed on both sides of the baffle (12).

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