Connecting pin shaft of anti-falling pin

Abstract

The utility model discloses a connecting pin shaft for preventing a pin from falling off, which relates to the technical field of connecting pin shafts and comprises a main body unit, a limiting unit arranged at the side part of the main body unit and a pin shaft unit arranged in the main body unit, a storage groove, a fixed column mounted on the inner wall of the storage groove and a limiting plate movably mounted on the side wall of the fixed column are formed in the end part of the main body unit; the pin shaft unit comprises an annular groove formed in the bottom wall of the main body unit, a rectangular groove formed in the inner wall of the main body unit, a pin shaft main body movably arranged in the main body unit and a limiting piece arranged on the side portion of the pin shaft main body. According to the connecting pin shaft for preventing the pin from falling off, through the arrangement of the limiting unit and the pin shaft unit, the pin shaft can be rapidly installed, and the installation operation process is simplified.

Description

Technical Field

[0001] This utility model relates to the field of connecting pin technology, and in particular to a connecting pin that prevents detachment. Background Technology

[0002] A pin is a standardized fastener that can be used for static fixed connection or for relative movement with the connected parts. It is mainly used at the hinge joint of two parts to form a hinge connection. Pins are usually locked with cotter pins, which are reliable and easy to disassemble. The pin connection structure is one of the most commonly used force transmission structures in engineering. For example, to meet the needs of split transportation, the boom and turntable, and the mast and turntable of a large-tonnage crawler crane are all connected by pins.

[0003] A search revealed a public disclosure (announcement) number: CN219242393U, which discloses a pin structure to prevent detachment. The structure includes a pin housing, a clamping device mounted on the upper left side of the housing, a pin cover mounted on the right side of the housing's outer surface, an internal thread on the right end of the housing, a pin assembly mounted on the right end of the housing, and a rotating device mounted on the right end of the pin assembly. This anti-detachment pin structure uses a rotating ring to drive the fixed pin into the housing via its external thread. Then, a rotating base on the clamping device drives bolts into screw holes one and two, further securing one side of the fixed pin within the housing. This improves the stability of the fixed pin during use, preventing it from detaching. Furthermore, when the fixed pin needs to be removed, the threaded clamping prevents excessive force from causing injury to workers.

[0004] Although the above solution prevents the pin from slipping out due to excessive force and causing injury to workers by securing it in the housing with a threaded clamp, the installation method is cumbersome and the operation is troublesome. Therefore, we propose a connecting pin that prevents the pin from slipping out. Utility Model Content

[0005] The main purpose of this utility model is to provide a connecting pin that prevents detachment. By setting a limiting unit and a pin unit, it solves the problem that the installation method is relatively cumbersome and the operation is relatively troublesome.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A connecting pin for preventing detachment includes a main body unit, a limiting unit disposed on the side of the main body unit, and a pin unit disposed inside the main body unit.

[0008] The main unit has a storage slot at one end, a fixed column installed on the inner wall of the storage slot, and a limiting plate movably installed on the side wall of the fixed column.

[0009] The pin unit includes an annular groove formed on the bottom wall of the main unit, a rectangular groove formed on the inner wall of the main unit, a pin body movably disposed inside the main unit, and a limiting member disposed on the side of the pin body.

[0010] Preferably, the main body unit includes a pin housing and a pin cover installed at the end of the pin housing.

[0011] Preferably, the limiting member includes a circular groove formed on the side wall of the pin body, a connecting spring installed on the bottom wall of the circular groove, and a rotating column installed on the end of the connecting spring.

[0012] Preferably, the connection between the rectangular groove and the annular groove is provided with rounded corners.

[0013] Preferably, there are two sets of limiting members, and the two sets of limiting members are symmetrically arranged about the bisecting plane of the pin body.

[0014] Preferably, the pin unit further includes a rotating ring installed at one end of the pin body located outside the pin housing.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] In this invention, by setting a limiting unit and a pin unit, when the pin housing needs to be installed, the limiting plate is rotated around the fixed column until it is parallel to the pin housing. At this time, the pin housing is inserted into the pin to be fixed. Under the action of gravity, the limiting plate rotates until it is perpendicular to the ground, thus forming a stop to prevent the pin housing from accidentally falling off. When the pin needs to be installed quickly, after the pin housing is installed quickly, the rotating column is placed against the bottom wall of the rectangular groove, and the pin body is moved along the rectangular groove while compressing the connecting spring. When the rotating column moves into the annular groove, under the elastic force of the connecting spring, the rotating column returns to its original position and is placed against the inner wall of the annular groove. At this time, by rotating the rotating ring, the pin body drives the limiting component to rotate until the limiting component is perpendicular to the side wall of the rectangular groove, thus realizing the quick installation of the pin and simplifying the installation operation process. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a top view schematic diagram of the structure of this utility model;

[0019] Figure 3 This utility model Figure 2 Schematic diagram of the cross-sectional structure at point AA;

[0020] Figure 4 This utility model Figure 3 Schematic diagram of the cross-sectional structure at point BB;

[0021] Figure 5 This is a schematic diagram of the main structure of this utility model.

[0022] In the picture:

[0023] 1. Main body unit; 101. Pin housing; 102. Pin cover;

[0024] 2. Limiting unit; 201. Fixing post; 202. Limiting plate;

[0025] 3. Pin unit; 301. Pin body; 302. Limiting component; 3021. Connecting spring; 3022. Rotating column; 303. Rotating ring. Detailed Implementation

[0026] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments. Example

[0027] like Figure 1 , Figure 2 , Figure 3 , Figure 4 as well as Figure 5 As shown, a connecting pin for preventing detachment includes a main body unit 1, a limiting unit 2 disposed on the side of the main body unit 1, and a pin unit 3 disposed inside the main body unit 1.

[0028] like Figure 5 As shown, the main unit 1 has a storage slot at one end, a fixing post 201 installed on the inner wall of the storage slot, and a limiting plate 202 movably installed on the side wall of the fixing post 201. The limiting plate 202 can prevent the pin housing 101 from accidentally slipping off.

[0029] like Figure 3 As shown, the pin unit 3 includes an annular groove formed on the bottom wall of the main body unit 1, a rectangular groove formed on the inner wall of the main body unit 1, a pin body 301 movably disposed inside the main body unit 1, and a limiting member 302 disposed on the side of the pin body 301. The limiting member 302 can prevent the pin body 301 from slipping out of the pin housing 101.

[0030] like Figure 1 As shown, the main body unit 1 includes a pin housing 101 and a pin cover 102 installed at the end of the pin housing 101. The pin cover 102 is provided to prevent the pin housing 101 from passing through the pin that needs to be fixed.

[0031] like Figure 4 As shown, the limiting member 302 includes a circular groove formed on the side wall of the pin body 301, a connecting spring 3021 installed on the bottom wall of the circular groove, and a rotating column 3022 installed on the end of the connecting spring 3021. The connection spring 3021 enables the rotating column 3022 to return quickly.

[0032] like Figure 3 As shown, there are two sets of limiting members 302, and the two sets of limiting members 302 are symmetrically arranged about the bisecting plane of the pin body 301, so as to achieve a stable installation between the pin body 301 and the pin housing 101.

[0033] like Figure 2 and Figure 3 As shown, the pin unit 3 also includes a rotating ring 303 installed on one end of the pin body 301 located outside the pin housing 101. The rotating ring 303 facilitates the convenient rotation of the pin body 301.

[0034] When the pin housing 101 needs to be installed, the limiting plate 202 is rotated around the fixing post 201 until the limiting plate 202 is parallel to the pin housing 101 and then stopped. At this time, the pin housing 101 is inserted into the pin to be fixed. Under the action of gravity, the limiting plate 202 rotates until it is perpendicular to the ground, thus forming a stop to prevent the pin housing 101 from falling off accidentally. Example

[0035] like Figure 1 , Figure 2 , Figure 3 , Figure 4 as well as Figure 5 As shown, a connecting pin for preventing detachment includes a main body unit 1, a limiting unit 2 disposed on the side of the main body unit 1, and a pin unit 3 disposed inside the main body unit 1.

[0036] like Figure 5 As shown, the main unit 1 has a storage slot at one end, a fixing post 201 installed on the inner wall of the storage slot, and a limiting plate 202 movably installed on the side wall of the fixing post 201. The limiting plate 202 can prevent the pin housing 101 from accidentally slipping off.

[0037] like Figure 3 As shown, the pin unit 3 includes an annular groove formed on the bottom wall of the main body unit 1, a rectangular groove formed on the inner wall of the main body unit 1, a pin body 301 movably disposed inside the main body unit 1, and a limiting member 302 disposed on the side of the pin body 301. The limiting member 302 can prevent the pin body 301 from slipping out of the pin housing 101.

[0038] like Figure 1As shown, the main body unit 1 includes a pin housing 101 and a pin cover 102 installed at the end of the pin housing 101. The pin cover 102 is provided to prevent the pin housing 101 from passing through the pin that needs to be fixed.

[0039] like Figure 4 As shown, the limiting member 302 includes a circular groove formed on the side wall of the pin body 301, a connecting spring 3021 installed on the bottom wall of the circular groove, and a rotating column 3022 installed on the end of the connecting spring 3021. The connection spring 3021 enables the rotating column 3022 to return quickly.

[0040] like Figure 3 As shown, the connection between the rectangular groove and the annular groove is provided with rounded corners, which facilitates the transition of the rotating column 3022 from the annular groove to the rectangular groove.

[0041] like Figure 3 As shown, there are two sets of limiting members 302, and the two sets of limiting members 302 are symmetrically arranged about the bisecting plane of the pin body 301, so as to achieve a stable installation between the pin body 301 and the pin housing 101.

[0042] like Figure 2 and Figure 3 As shown, the pin unit 3 also includes a rotating ring 303 installed on one end of the pin body 301 located outside the pin housing 101. The rotating ring 303 facilitates the convenient rotation of the pin body 301.

[0043] When quick installation of the pin is required, after quickly installing the pin housing 101, the rotating column 3022 is aligned with the bottom wall of the rectangular groove. The pin body 301 is then moved along the rectangular groove, compressing the connecting spring 3021. When the rotating column 3022 moves into the annular groove, the spring force of the connecting spring 3021 causes the rotating column 3022 to return to its original position and align with the inner wall of the annular groove. At this point, by rotating the rotating ring 303, the pin body 301 drives the limiting member 302 to rotate until the limiting member 302 is perpendicular to the side wall of the rectangular groove, thus achieving quick installation of the pin and simplifying the installation process.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A non-come-out pin shaft of a connection pin, comprising a main body unit (1), characterized in that, Also include the limiting unit (2) arranged in the side of the main unit (1), and the pin shaft unit (3) arranged in the inside of the main unit (1); The end of the main unit (1) is provided with a receiving groove, a fixed column (201) installed on the inner wall of the receiving groove, and a limiting plate (202) movably installed on the side wall of the fixed column (201); The pin shaft unit (3) includes an annular groove opened in the bottom wall of the main unit (1), a rectangular groove opened in the inner wall of the main unit (1), a pin shaft body (301) movably arranged in the inside of the main unit (1), and a limiting piece (302) arranged on the side of the pin shaft body (301).

2. A non-come-undone connecting pin as claimed in claim 1, characterized in that: The main unit (1) includes a pin shaft shell (101) and a pin shaft cover (102) installed on the end of the pin shaft shell (101).

3. A non-come-undone peg shaft as defined in claim 2, wherein: The limiting piece (302) includes a circular groove opened in the side wall of the pin shaft body (301), a connecting spring (3021) installed on the bottom wall of the circular groove, and a rotating column (3022) installed on the end of the connecting spring (3021).

4. A non-come-undone connecting pin as defined in claim 1, characterized in that: The connecting part of the rectangular groove and the annular groove is provided with a round corner.

5. A non-come-undone peg shaft as defined in claim 1, wherein: The limiting piece (302) has two groups, and the two groups of limiting pieces (302) are symmetrically arranged about the bisector of the pin shaft body (301).

6. A non-come-undone peg shaft according to claim 5, wherein: The pin shaft unit (3) further includes a rotating ring (303) installed on the end of the pin shaft body (301) outside the pin shaft shell (101).

Images