Pin shaft

Abstract

The utility model provides a pin shaft and belongs to the technical field of machinery. The pin shaft comprises a pin shaft body and is characterized in that a shaft head is arranged at the upper end of the pin shaft body, the shaft head is in a circular truncated cone shape, a groove is formed in the shaft head, and the groove is in a hollow circular truncated cone shape. The pin shaft has the advantages that when the pin shaft is knocked, the shaft head part in the middle of the groove deforms and collapses into the groove after being knocked, so that the deformation part does not exceed the original circumferential area, and subsequent use of the pin shaft is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical technology and relates to a pin shaft. Background Technology

[0002] During the assembly and disassembly of tower cranes, a large number of pins are typically used. When disassembling pins, workers usually use hammers to knock them out. During this knocking process, the pins are prone to deformation and collapse outwards, exceeding their original circumference, rendering the pins unusable. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a new type of pin that solves the problem that pins are prone to deformation and collapse outwards during the hammering process, exceeding their original circumference area and rendering them unusable.

[0004] The objective of this utility model can be achieved through the following technical solutions:

[0005] A pin includes a pin body, characterized in that the upper end of the pin body is provided with a shaft head, the shaft head is frustum-shaped, and a groove is formed on the shaft head, the groove being a hollow frustum-shaped.

[0006] In the aforementioned pin, the shaft head portion in the middle of the groove is higher than the shaft head portion on the outer side of the groove.

[0007] Compared with the prior art, the present invention has the following advantages:

[0008] When struck, the shaft head in the middle of the groove deforms and collapses into the groove, ensuring that the deformed part does not exceed the original circumferential area and will not affect the subsequent use of the shaft. The shaft head in the middle of the groove is higher, while the shaft head on the outer side of the groove is lower, so that when striking, the middle shaft head will be struck, avoiding striking the outer shaft head and causing it to exceed the original circumferential area. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of this utility model.

[0010] In the picture,

[0011] 1. Pin body; 2. Shaft head; 3. Groove. Detailed Implementation

[0012] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0013] like Figure 1 As shown,

[0014] A pin includes a pin body 1, characterized in that the upper end of the pin body 1 is provided with a shaft head 2, the shaft head 2 is frustum-shaped, and a groove 3 is provided on the shaft head 2, the groove 3 being a hollow frustum-shaped.

[0015] In this embodiment, when struck, the shaft head 2 in the middle of the groove 3 deforms and collapses into the groove 3, so that the deformed part does not exceed the original circumferential area and will not affect the subsequent use of the shaft.

[0016] In this embodiment, the middle portion of the shaft head 2 in the groove 3 is higher than the outer portion of the shaft head 2 in the groove 3. The middle portion of the shaft head 2 in the groove 3 is higher, and the outer portion of the shaft head 2 in the groove 3 is lower, so that when it is struck, the middle portion of the shaft head 2 will be struck, avoiding the outer portion of the shaft head 2, which would cause it to exceed the original circumferential area.

[0017] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0018] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Meanwhile, the word "and / or" throughout the text means including three solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0019] All of the above components are general standard parts or components known to those skilled in the art. Their structure and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0020] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A pin, comprising a pin body (1), characterized in that, The upper end of the pin body (1) is provided with a shaft head (2), the shaft head (2) is frustum-shaped, and a groove (3) is provided on the shaft head (2), the groove (3) is a hollow frustum-shaped.

2. The pin according to claim 1, characterized in that, The shaft head (2) portion in the middle of the groove (3) is higher than the shaft head (2) portion on the outside of the groove (3).

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