Combined shaft pin with adjustable length

Abstract

The length-adjustable combined shaft pin comprises a left split body and a right split body, the left split body comprises a left shaft section, a left fixing plate is arranged at one end of the left shaft section, an insertion hole is formed in the other end of the left shaft section, and a sleeve is arranged in the insertion hole; a plurality of left fixing plate fixing seats are arranged in the circumferential direction of the left fixing plate, the left fixing plate fixing seats are thicker than the left fixing plate, and the inner surfaces of the left fixing plate fixing seats are flush with the inner surface of the left fixing plate; the right split body comprises a right shaft section, one end of the right shaft section is provided with a right fixing plate, the other end of the right shaft section is provided with a shaft body matched with the insertion hole inner sleeve, a plurality of right fixing plate fixing seats are arranged in the circumferential direction of the right fixing plate, the thickness of the right fixing plate fixing seats is larger than that of the right fixing plate, and the inner surfaces of the right fixing plate fixing seats are flush with the inner surface of the right fixing plate. The outer diameter of the left shaft section is the same as that of the right shaft section. According to the shaft pin, the shaft pin is formed by combining the left split body and the right split body, the use requirements of different shaft pin lengths can be met within the effective matching length range of the shaft body and the insertion hole, and the use cost is low.

Description

Technical Field

[0001] The invention belongs to the technical field of shaft pins, and in particular relates to a combined shaft pin with adjustable length. Background Art

[0002] In mechanical equipment, the axle pin is an important component. The axle pin can be statically fixed or move relative to the connected parts. It is mainly used at the hinge of two parts to form a hinge connection. When installing traditional axle pins, the axle pin is generally inserted as a whole from one end of the shaft hole, and then the exposed end is fixed by a fixing plate. Most of these axle pins can only adapt to two parts of a specific size. When connecting parts of different specifications, even if the shaft hole diameters are the same, they cannot be adapted, and the versatility is poor. Especially for certain special working conditions (such as testing operations or temporary use scenarios), the length of the axle pin needs to be adjusted as needed for adaptation. The axle pins in the prior art are difficult to meet such applications. Therefore, it is necessary to improve the existing axle pins. Summary of the invention

[0003] In view of this, the present invention aims to overcome the defects in the prior art and proposes a combined axle pin with adjustable length.

[0004] To achieve the above object, the technical solution created by the present invention is implemented as follows:

[0005] A combined axle pin with adjustable length comprises a left split body and a right split body, the left split body comprises a left axle section, a left fixed plate is provided at one end of the left axle section, a socket is provided at the other end, a sleeve is installed in the socket, a positioning platform matched with the inner end of the sleeve is provided at the bottom of the socket, and the outer end of the sleeve is located on the inner side of the end surface of the left axle section; a plurality of left fixed plate fixing seats are provided along the circumferential direction of the left fixed plate, the thickness of the left fixed plate fixing seat is greater than the thickness of the left fixed plate, and the inner surface of the left fixed plate fixing seat is flush with the inner surface of the left fixed plate; the right split body comprises a right axle section, a right fixed plate is provided at one end of the right axle section, a shaft body matched with the inner sleeve of the socket is provided at the other end, a conical guide section is provided at the end of the shaft body, a plurality of right fixed plate fixing seats are provided along the circumferential direction of the right fixed plate, the thickness of the right fixed plate fixing seat is greater than the thickness of the right fixed plate, and the inner surface of the right fixed plate fixing seat is flush with the inner surface of the right fixed plate, and the outer diameter of the left axle section is the same as the outer diameter of the right axle section.

[0006] Furthermore, the length of the guide section is 0.5-1.2 times the diameter of the shaft.

[0007] Furthermore, an arc-shaped groove is provided at the junction of the left shaft section and the left fixing plate.

[0008] Furthermore, an arc-shaped groove is provided at the junction of the right shaft section and the right fixing plate.

[0009] Furthermore, a plurality of functional holes are provided on the side wall of the sleeve.

[0010] Furthermore, the functional hole is a through hole.

[0011] Furthermore, the outer wall of the inner end of the sleeve is provided with a chamfer, and the inner wall of the outer end of the sleeve is provided with a chamfer.

[0012] Furthermore, the left fixing plate has the same structure as the right fixing plate.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] The invention has a reasonable structural design and is easy to install and use. The shaft pin is composed of a left and a right split body. Within the effective matching length range of the shaft body and the socket, it can adapt to the use requirements of different shaft pin lengths. A sleeve is arranged in the socket, and the sleeve contacts the shaft body. Even if it is worn out after long-term use, it can be repaired by replacing only the sleeve, and the use cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings constituting part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0016] Figure 1 A schematic diagram of the structure created by the present invention;

[0017] Figure 2 This is a schematic diagram of the left split body and the right split body created by the present invention when they are completely fitted together;

[0018] Figure 3 This is a schematic diagram of the appearance of the left split body in the invention;

[0019] Figure 4 It is a cross-sectional view of the left split body in the invention;

[0020] Figure 5 This is a schematic diagram of the appearance of the right split body in the invention;

[0021] Figure 6 It is a partial cross-sectional view of the right split body in the invention;

[0022] Figure 7 for Figure 6 Schematic diagram after removing the sleeve;

[0023] Figure 8 for Figure 7 Left view of . DETAILED DESCRIPTION

[0024] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0026] In the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the invention can be understood according to specific circumstances.

[0027] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0028] A length-adjustable combined axle pin, such as Figures 1 to 8 As shown, it includes a left split body 1 and a right split body 2. The left split body includes a left shaft section 3. A left fixed plate 4 is provided at one end of the left shaft section, and a socket 5 is provided at the other end. A sleeve 6 is installed in the socket. A positioning platform 7 that cooperates with the inner end of the sleeve is provided at the bottom of the socket. The outer end of the sleeve is located on the inner side of the end face of the left shaft section. Preferably, the surface of the shaft body is covered with wear-resistant material. When in use, the sleeve is allowed to wear before the shaft body. The purpose of repairing the shaft pin is achieved by replacing the sleeve. Compared with the integral shaft pin, the use cost will not be increased. In an optional embodiment, a plurality of functional holes 14 are provided on the side wall of the sleeve. As an example, the functional hole is a through hole. If the sleeve is worn out due to long-term use, the sleeve can be removed by using tools such as calipers with the help of the functional holes for replacement. Several left fixed plate fixing seats 8 are provided along the circumferential direction of the left fixed plate. The thickness of the left fixed plate fixing seat is greater than the thickness of the left fixed plate, and the inner surface of the left fixed plate fixing seat is flush with the inner surface of the left fixed plate.

[0029] The right split body includes a right shaft section 9, a right fixed plate 10 is provided at one end of the right shaft section, and a shaft body 11 matched with the inner sleeve of the jack is provided at the other end. The end of the shaft body is provided with a conical guide section 12. Preferably, the diameter of the shaft body is 1 / 2-2 / 3 of the diameter of the right shaft section, so as to ensure that the entire shaft pin has good rigidity and strength after the left and right split bodies are combined. Several right fixed plate fixing seats 15 are provided along the circumferential direction of the right fixed plate. The thickness of the right fixed plate fixing seat is greater than the thickness of the right fixed plate, and the inner surface of the right fixed plate fixing seat is flush with the inner surface of the right fixed plate, and the outer diameter of the left shaft section is the same as the outer diameter of the right shaft section. In an optional embodiment, the left fixed plate has the same structure as the right fixed plate, and the right fixed plate fixing seat is the same as the left fixed plate fixing seat. Usually, the left shaft section and the left fixed plate are an integrally formed structure, and the right shaft section and the right fixed plate are an integrally formed structure. Connecting holes 16 are provided on the left fixed plate fixing seat and the right fixed plate fixing seat.

[0030] The length of the guide section is 0.5-1.2 times the diameter of the shaft body. An arc-shaped groove 13 is provided at the junction of the left shaft section and the left fixed plate. An arc-shaped groove is provided at the junction of the right shaft section and the right fixed plate. When in use, it is only necessary to insert the left and right split bodies from both ends of the shaft seat respectively, and then fix the fixing plates of the left and right split bodies to the outer end surface of the shaft seat. For working conditions where the shaft holes are the same but the inner cavity widths of the shaft seats are different, as long as the shaft body of the right split body of the shaft pin can form a matching relationship with the sleeve of the left split body, it can be applied. Compared with the installation method in the prior art where the shaft pin can only be inserted from one side of the shaft hole, the shaft pin created by the present invention is more convenient to install the left and right split bodies from both sides. In addition, in order to facilitate the insertion of the sleeve into the socket, the outer wall of the inner end of the sleeve is provided with a chamfer, and in order to facilitate the insertion of the shaft body into the sleeve, a chamfer is provided on the inner wall of the outer end of the sleeve.

[0031] The invention has a reasonable structural design and is easy to install and use. The shaft pin is composed of a left and a right split body. Within the effective matching length range of the shaft body and the socket, it can adapt to the use requirements of different shaft pin lengths. A sleeve is arranged in the socket, and the sleeve contacts the shaft body. Even if it is worn out after long-term use, it can be repaired by replacing only the sleeve, and the use cost is low.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A length-adjustable combined axle pin, characterized in that: The invention comprises a left split body and a right split body, the left split body comprises a left shaft section, a left fixed plate is provided at one end of the left shaft section, a socket is provided at the other end, a sleeve is installed in the socket, a positioning platform matched with the inner end of the sleeve is provided at the bottom of the socket, and the outer end of the sleeve is located on the inner side of the end surface of the left shaft section; a plurality of left fixed plate fixing seats are provided along the circumferential direction of the left fixed plate, the thickness of the left fixed plate fixing seat is greater than the thickness of the left fixed plate, and the inner surface of the left fixed plate fixing seat is flush with the inner surface of the left fixed plate; the right split body comprises a right shaft section, a right fixed plate is provided at one end of the right shaft section, a shaft body matched with the inner sleeve of the socket is provided at the other end, a conical guide section is provided at the end of the shaft body, a plurality of right fixed plate fixing seats are provided along the circumferential direction of the right fixed plate, the thickness of the right fixed plate fixing seat is greater than the thickness of the right fixed plate, and the inner surface of the right fixed plate fixing seat is flush with the inner surface of the right fixed plate, and the outer diameter of the left shaft section is the same as the outer diameter of the right shaft section.

2. The length-adjustable combined axle pin according to claim 1, characterized in that: The length of the guide section is 0.5-1.2 times the diameter of the shaft.

3. The length-adjustable combined axle pin according to claim 1, characterized in that: An arc-shaped groove is arranged at the joint of the left shaft section and the left fixing plate.

4. The length-adjustable combined axle pin according to claim 1, characterized in that: An arc-shaped groove is arranged at the joint between the right shaft section and the right fixing plate.

5. The length-adjustable combined axle pin according to claim 1, characterized in that: A plurality of functional holes are arranged on the side wall of the sleeve.

6. The length-adjustable combined axle pin according to claim 5, characterized in that: The functional hole is a through hole.

7. The length-adjustable combined axle pin according to claim 1, characterized in that: The outer wall of the inner end of the sleeve is provided with a chamfer, and the inner wall of the outer end of the sleeve is provided with a chamfer.

8. The length-adjustable combined axle pin according to claim 1, characterized in that: The left fixing plate has the same structure as the right fixing plate.

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