Cylindrical pin capable of being quickly disassembled and assembled

Abstract

The utility model relates to the technical field of disassembly and assembly of cylindrical pins, in particular to a cylindrical pin capable of being quickly disassembled and assembled, which overcomes the defects of disassembly and assembly of the cylindrical pin in the prior art and comprises a cylindrical pin, a first threaded part and a second threaded part which are arranged in the cylindrical pin. And studs are arranged in the first threaded piece and the second threaded piece. The screw has the advantages of being high in practicability and convenient to disassemble and assemble.

Description

Technical Field

[0001] The utility model relates to the technical field of disassembly and assembly of cylindrical pins, and specifically relates to a cylindrical pin that can be quickly disassembled and assembled. Background Technique

[0002] In the heavy machinery industry, such as wind power gearbox products. The gearbox is usually used in a relatively harsh environment, and often the pins used on the product will fail in the case of extreme working conditions. If the failed pins are replaced in time, the machine can continue to operate normally. Replacing the pins on-site is impossible for sites without freezing conditions. During the assembly process of products such as gearboxes, it is often necessary to install two parts with high precision to achieve the purpose of accurate alignment of the parts.

[0003] In the existing patent with the publication number CN216430203U, a quick-disassembly and anti-drop insurance cylindrical pin is disclosed. One end of the pin has a thread on the outer circumference, and behind the thread is a groove on the pin rod. The thread of the pin is connected to a nut, and the insurance ring can pass through the thread and be sleeved in the groove on the pin rod. One end of the insurance ring has a tapered guiding chamfer. This cylindrical pin is fixed at one end by a nut and an insurance ring, which is troublesome to install and has an unstable structure and needs to be improved.

[0004] Therefore, it is necessary to design a cylindrical pin that can be quickly disassembled and assembled with strong practicability and convenient disassembly and installation. Content of the Utility Model

[0005] The purpose of the utility model is to provide a cylindrical pin that can be quickly disassembled and assembled to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A cylindrical pin that can be quickly disassembled and assembled, including a cylindrical pin. A first threaded part is arranged inside the cylindrical pin, a second threaded part is arranged inside the cylindrical pin, and a stud is arranged inside the first threaded part and the second threaded part.

[0007] According to the above technical solution, the first threaded part is a right-handed threaded bushing, and the second threaded part is a left-handed threaded bushing.

[0008] According to the above technical solution, the stud is a double-headed stud with reverse threads. One end of the double-headed stud is designed with a right-handed thread to match the first threaded part, and one end is designed with a left-handed thread to match the second threaded part.

[0009] According to the above technical solution, the first threaded part and the second threaded part are on the same axis.

[0010] According to the above technical solution, the stud is a double-headed stud with reverse threads. There is a gap between the first threaded part and the second threaded part. The first threaded part and the second threaded part have a certain taper. The diameter of the first threaded part decreases from bottom to top, and the diameter of the second threaded part decreases from top to bottom.

[0011] Compared with the prior art, the beneficial effects achieved by the present utility model are as follows:

[0012] (1) By providing two reverse threads, when the first threaded part and the second threaded part are threadedly connected to the inner surface of the stud inside the cylindrical pin, the smaller-diameter ends of the first threaded part and the second threaded part are both in the middle section inside the cylindrical pin, and there is a "gap" between them. At this time, the larger-diameter ends are abutted against the outer parts at both ends of the cylindrical pin. By rotating the stud, this "gap" becomes smaller, which means that the two threaded parts are closer to each other, and the larger-diameter ends of the two threaded parts exert a greater extrusion force on the outer parts at both ends of the cylindrical pin, resulting in a better fixing effect. By rotating in the reverse direction, the first threaded part and the second threaded part are separated until they no longer press against the cylindrical pin. Then, the first threaded part can be rotated and disassembled first, and then the second threaded part and the stud can be directly pulled out, enabling the rapid disassembly of the pin. Description of the Drawings

[0013] Figure 1 is a cross-sectional view of the present utility model;

[0014] In the figure: 1, cylindrical pin; 2, first threaded part; 3, stud; 4, second threaded part; Specific Embodiments

[0015] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0016] Please refer to Figure 1 , the present utility model provides a technical solution: a cylindrical pin capable of realizing rapid disassembly and assembly, including a cylindrical pin 1, a first threaded part 2 is arranged inside the cylindrical pin 1, a second threaded part 4 is arranged inside the cylindrical pin 1, and a stud 3 is arranged inside the first threaded part 2 and the second threaded part 4.

[0017] Specifically, first rotate the stud 3 into the second threaded part 4. Insert the stud 3 and the second threaded part 4 into the cylindrical pin 1. At this time, the smaller-diameter end of the second threaded part 4 enters the inside of the cylindrical pin 1, one end of the stud 3 is exposed outside the second threaded part 4 and inside the cylindrical pin 1, and the larger-diameter end of the second threaded part 4 is outside the cylindrical pin 1. Then rotate the smaller-diameter end of the first threaded part 2 on the surface of the stud, which also enters the inside of the cylindrical pin 1, and the larger-diameter end is outside the cylindrical pin 1. Through the self-locking property of the thread of the stud 3 and the taper extrusion of the two threaded parts on both ends of the cylindrical pin 1, fixation is completed, enabling rapid disassembly of the pin.

[0018] The first threaded part 2 is a right-handed threaded bushing, the second threaded part 4 is a left-handed threaded bushing, and the stud 3 is a double-headed stud with opposite threads. One end of the double-headed stud is designed with a right-handed thread to match the first threaded part 2, and one end is designed with a left-handed thread to match the second threaded part 4.

[0019] Specifically, taking Figure 1 as a reference, the first threaded part 2 is located on the lower side, the second threaded part 4 is located on the upper side, and the stud 3 is a double-headed stud with opposite threads. By rotating the stud 3, since the first threaded part 2 and the second threaded part 4 contact and rub against both ends of the cylindrical pin 1, they do not rotate following the rotation of the stud 3. Instead, they advance towards the middle section of the cylindrical pin 1 through the threads, making the extrusion fixation between the first threaded part 2, the second threaded part 4, and the cylindrical pin 1 more secure.

[0020] The first threaded part 2 and the second threaded part 4 are on the same axis.

[0021] Specifically, the first threaded part 2 and the second threaded part 4 are on the same axis, enabling them to be adapted to complete threaded connection of the stud 3 inside the cylindrical pin 1.

[0022] There is a gap between the first threaded part 2 and the second threaded part 4. The first threaded part 2 and the second threaded part 4 have a certain taper. The diameter of the first threaded part 2 decreases from bottom to top, and the diameter of the second threaded part 4 decreases from top to bottom.

[0023] Specifically, when the first threaded part 2 and the second threaded part 4 are threadedly connected to the surface of the stud 3 inside the cylindrical pin 1, the smaller-diameter ends of the first threaded part 2 and the second threaded part 4 are both in the middle section inside the cylindrical pin 1, and there is a "gap" between them. At this time, the larger-diameter ends are against the outside of both ends of the cylindrical pin 1. By rotating the stud 3, this "gap" becomes smaller, which means the two threaded parts are closer. The larger-diameter ends of the two threaded parts exert a greater extrusion force on the outside of both ends of the cylindrical pin 1, resulting in a better fixation effect. By rotating in the reverse direction, the first threaded part 2 and the second threaded part 4 move away until they no longer squeeze the cylindrical pin 1. Then, the first threaded part 2 can be rotated and disassembled first, and then the second threaded part 4 and the stud 3 can be directly pulled out, enabling rapid disassembly of the pin.

[0024] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claimed rights.

Claims

1. A cylindrical pin capable of rapid assembly and disassembly, comprising a cylindrical pin (1), characterized in that: The cylindrical pin (1) is provided with a first threaded part (2) inside, the cylindrical pin (1) is provided with a second threaded part (4) inside, and studs (3) are provided inside the first threaded part (2) and the second threaded part (4).

2. A cylindrical pin capable of rapid disassembly and assembly according to claim 1, characterized in that: The first threaded member (2) is a right-hand threaded bushing, and the second threaded member (4) is a left-hand threaded bushing.

3. A cylindrical pin capable of rapid disassembly and assembly according to claim 2, characterized in that: The stud (3) is a double-ended stud with positive and negative threads. One end of the stud has a right-hand thread that is compatible with the first threaded member (2), and the other end has a left-hand thread that is compatible with the second threaded member (4).

4. A cylindrical pin capable of rapid disassembly and assembly according to claim 3, characterized in that: The threaded member 1 (2) and the threaded member 2 (4) are located on the same axis.

5. A cylindrical pin capable of rapid disassembly and assembly according to claim 4, characterized in that: A gap is left between the threaded component 1 (2) and the threaded component 2 (4), and the threaded component 1 (2) and the threaded component 2 (4) have a taper. The diameter of the threaded component 1 (2) decreases from bottom to top, and the diameter of the threaded component 2 (4) decreases from top to bottom.

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