Cotter pin bending clamp

Abstract

The utility model belongs to the technical field of aircraft tools, and particularly relates to a cotter pin bending clamp which comprises a left clamp body (1) and a right clamp body (2) which are hinged to each other, positioning grooves (3) are formed in the front sides of the end portions of the clamping ends of the left clamp body (1) and the right clamp body (2) respectively, the notch axes of the two positioning grooves (3) coincide, and the notch axes of the left clamp body (1) and the right clamp body (2) coincide with each other. And the notch of the positioning groove (3) extends from the inner side surfaces of the left clamp body (1) and the right clamp body (2) to the outer side surfaces along the clamping direction of the clamp bodies. The cotter pin bending device can efficiently and accurately bend the cotter pin at the position difficult to approach, the bending efficiency is improved, the bending quality is guaranteed, and the labor intensity is reduced.

Description

Technical Field

[0001] This application belongs to the technical field of aircraft tooling, and particularly relates to an open pin bending pliers. Background Art

[0002] During the installation, maintenance, and replacement of aircraft components and finished products, open pins, as important mechanical connectors, are widely used in various equipment and structures. However, during the mechanical assembly process, open pins are often located in inaccessible positions, resulting in low assembly efficiency, high labor intensity, and easy damage to the surface of the open pin body and the assembled parts. Summary of the Utility Model

[0003] To solve the above problems, this application provides an open pin bending pliers, which includes a left pliers body and a right pliers body that are hinged to each other. Among them, positioning grooves are respectively arranged on the front sides of the clamping ends of the left pliers body and the right pliers body, and the axis of the groove openings of the two positioning grooves coincides. The groove openings of the positioning grooves extend from the inner side surfaces of the left pliers body and the right pliers body to the outer side surfaces along the clamping direction of the pliers body.

[0004] Preferably, the cross-section of the groove opening of the positioning groove is semi-runway-shaped.

[0005] Preferably, the depth of the groove opening of the positioning groove near the inner side surface of the left pliers body or the right pliers body is less than the depth of the groove opening near the outer side surface of the left pliers body or the right pliers body, and the bottom of the positioning groove is in a slope transition from the inner side surface to the outer side surface of the left pliers body or the right pliers body.

[0006] Preferably, the depth of the groove opening of the positioning groove near the inner side surfaces of the left pliers body and the right pliers body is 0.

[0007] Preferably, at least one of the left pliers body or the right pliers body is fixedly connected with a screwdriver head at the handle end.

[0008] This application can bend open pins at inaccessible positions efficiently and accurately, improve the bending efficiency, ensure the bending quality, and reduce the labor intensity. Description of the Drawings

[0009] Figure 1 is the overall structural schematic diagram of a preferred embodiment of the open pin bending pliers of this application.

[0010] Figure 2 is this application Figure 1 The enlarged schematic diagram of the clamping end of the shown embodiment.

[0011] Figure 3 is this application Figure 2 The A-A cross-sectional schematic diagram of the shown embodiment.

[0012] Figure 4 is this applicationFigure 3 Schematic diagram of the deformation of the A-A cross-sectional structure of the illustrated embodiment.

[0013] Figure 5 This application Figure 1 Schematic diagram of the application of the split pin bending pliers of the illustrated embodiment.

[0014] Wherein, 100 - split pin bending pliers, 1 - left pliers body, 2 - right pliers body, 3 - positioning groove, 200 - connecting piece, 300 - hexagon slotted nut, 400 - split pin, 500 - hexagon head bolt. Specific embodiments

[0015] To make the purpose, technical solutions and advantages of the implementation of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below in conjunction with the accompanying drawings in the embodiments of this application. In the drawings, the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions from beginning to end. The described embodiments are part of the embodiments of this application, not all of the embodiments. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain this application and should not be construed as limiting this application. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of this application. The embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0016] This application provides a split pin bending pliers, as Figure 1 shown, including a left pliers body 1 and a right pliers body 2 that are hinged to each other. Among them, positioning grooves 3 are respectively arranged on the front sides of the clamping ends of the left pliers body 1 and the right pliers body 2. The axis of the notch of the two positioning grooves 3 coincides, and the notch of the positioning groove 3 extends from the inner side surface to the outer side surface of the left pliers body 1 and the right pliers body 2 along the clamping direction of the pliers body.

[0017] Referring to Figure 5 , the connecting piece 200 is connected to other structures through a hexagon head bolt 500 with a split pin hole and a hexagon slotted nut 300, and then the split pin 400 is used to fix the hexagon slotted nut 300. When the split pin 400 is located at a difficult-to-reach position such as a slit in the machine body, the split pin 400 is positioned through the positioning groove 3 of the split pin bending pliers 100 of this application. After the two fins of the split pin 400 are embedded in the positioning groove 3, the left pliers body 1 and the right pliers body 2 are driven to bend the two fins of the split pin 400 and clamp it in place.

[0018] Compared with traditional long-nose pliers, this application improves the bending efficiency of split pins, shortens the operation time, reduces the labor intensity, and at the same time can ensure the bending quality of split pins, reduce secondary rework and waste, and improve production efficiency and product quality.

[0019] In some alternative embodiments, the notch cross-section of the positioning groove 3 is semi-runway-shaped.

[0020] In this embodiment, the semi-runway shape means that the bottom surface of the positioning groove is flat, and both sides are transitioned to the front side surface of the clamping end through an arc, thereby forming a structure similar to a runway. In addition, the notch cross-section of the positioning groove 3 can also be semicircular, trapezoidal or rectangular. The purpose of setting the notch cross-section as a semi-runway shape, semicircular or trapezoidal structure is to facilitate the insertion of the two fins of the split pin into the positioning groove 3.

[0021] In some alternative embodiments, the depth of the notch of the positioning groove 3 near the inner side surface of the left jaw 1 or the right jaw 2 is less than the depth of the notch near the outer side surface of the left jaw 1 or the right jaw 2, and the bottom of the positioning groove 3 is transitioned in an inclined plane from the inner side surface to the outer side surface of the left jaw 1 or the right jaw 2.

[0022] In some alternative embodiments, the depth of the notch of the positioning groove 3 near the inner side surfaces of the left jaw 1 and the right jaw 2 is 0.

[0023] Figures 2 - 3 An embodiment is given where the notch depths at various positions of the positioning groove 3 are the same. Figure 4 An embodiment is given where the notch depths at various positions of the positioning groove 3 are different. In Figure 4 it, the depth of the side where the two positioning grooves are close to each other is 0, and it is easier to fit with the split pin fins of the Figure 5 shown shape.

[0024] In some alternative embodiments, at least one of the left jaw 1 or the right jaw 2 is fixedly connected with a screwdriver head at the handle end. In this embodiment, by adding a screwdriver at the handle end, the applicability of this split pin bending pliers is more extensive.

[0025] The above is only the specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present application should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A split pin bending pliers, comprising a left pliers body (1) and a right pliers body (2) hinged to each other, characterized in that: Positioning grooves (3) are respectively arranged at the front sides of the clamping ends of the left clamp body (1) and the right clamp body (2), the notch axes of the two positioning grooves (3) coincide with each other, and the notches of the positioning grooves (3) extend from the inner side surfaces of the left clamp body (1) and the right clamp body (2) to the outer side surfaces along the clamping direction of the clamp bodies.

2. The split pin bending pliers according to claim 1, characterized in that: The slot cross section of the positioning slot (3) is in the shape of a half-racetrack.

3. The split pin bending pliers according to claim 1, characterized in that: The depth of the notch of the positioning groove (3) near the inner side surface of the left jaw body (1) or the right jaw body (2) is less than the depth of the notch near the outer side surface of the left jaw body (1) or the right jaw body (2), and the bottom of the positioning groove (3) transitions from the inner side surface of the left jaw body (1) or the right jaw body (2) to the outer side surface in an inclined plane.

4. The split pin bending pliers according to claim 3, characterized in that: The depth of the notch of the positioning groove (3) near the inner side surfaces of the left clamp body (1) and the right clamp body (2) is 0.

5. The split pin bending pliers according to claim 1, characterized in that: At least one of the left pliers body (1) or the right pliers body (2) has a screwdriver head fixedly connected to the handle end.

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