CN205207376U - High strength bolt connection structure - Google Patents

Abstract

The utility model relates to a high-strength bolt connection structure, which is used to connect the connection joint with the buffer. The connection joint and the buffer are provided with through holes. The high-strength bolt connection structure includes positioning bolts, clamps, bushings and bolts. The main body and the bushing are installed in the through hole of the connecting joint. The main body of the bolt is a hollow structure, with a boss at one end and a plurality of through holes perpendicular to the axis of the main body at the other end. The main body of the bolt passes through the bushing and the buffer. The hoop is provided with a through hole, and the hoop is inserted into the through hole end of the bolt body, and the positioning bolt passes through the through hole on the hoop and the through hole on the bolt body, so as to make the hoop and the bolt body fixedly connected. One end of the bolt main body of the utility model is tightened by a boss on the main body, the other end is locked by a clamp, and then the clamp and the bolt main body are axially fixed by the positioning bolts, and the bolt main body adopts a hollow structure. Based on the connection function, the weight of the bolt can be significantly reduced.

Description

A high-strength bolt connection structure

technical field

The utility model relates to a fastener structure, in particular to a high-strength bolt connection structure.

Background technique

Bolts are a commonly used fastener, and bolts are often used to connect two parts in the hinged mode. However, when the two parts to be connected are large, the required bolt size must also be increased accordingly, which will lead to bolts The overall quality increases and the fatigue life decreases.

For example, the connection between the buffer of the aircraft and the landing gear, because the two ends of the buffer of the aircraft use bearings, it must be connected to the landing gear by bolts. For small aircraft, its take-off weight is not large, and its life expectancy is not high. The use of general structural steel solid bolts can meet the requirements of use. However, for large aircraft, the requirements for the landing gear are large load capacity and long life. If solid bolts and nuts are still used, although the structure is simple, due to the large size of the bolt structure, there are excessive weight and fatigue performance at the thread. Poor, high manufacturing and maintenance costs.

Utility model content

The purpose of the utility model is to provide a high-strength bolt connection structure to solve the problem that the weight of the connection bolts between the buffer and the landing gear pillar of the aircraft rocker arm is too large.

In order to achieve the above purpose, the technical solution adopted by the utility model is: a high-strength bolt connection structure, which is used to connect the connection joint with the buffer, and the connection joint and the buffer are provided with through holes, and the high-strength bolt connection structure Includes set bolt, clamp, bushing and bolt body,

The bushing is installed in the through hole of the connecting joint;

The bolt body is a hollow structure, one end is provided with a boss, and the other end is provided with a plurality of through holes perpendicular to the axis of the bolt body, and the bolt body passes through the bushing and the buffer;

The clamp is provided with a through hole, and the clamp is inserted into the end of the bolt body provided with the through hole;

The positioning bolt passes through the through hole on the clip and the through hole on the bolt body, and is used for fixedly connecting the clip to the bolt body.

Further, the number of through holes on the bolt body is two.

Further, the inner surface and the outer surface of the bolt body are both smooth surfaces.

Further, the bolt body is made of high-strength alloy steel.

In the high-strength bolt connection structure of the utility model, one end of the bolt main body is tightened by a boss on the main body, the other end is locked by a clamp, and then the clamp and the bolt main body are axially fixed by a positioning bolt, and the bolt The main body adopts a hollow structure, which can significantly reduce the weight of the bolts on the basis of realizing the connection function.

Description of drawings

The accompanying drawings, which are incorporated in the specification and constitute a part of the specification, illustrate embodiments consistent with the present utility model, and are used together with the specification to explain the principle of the utility model.

Fig. 1 is a connection schematic diagram of a high-strength bolt connection structure according to an embodiment of the present invention.

Among them, 1 is a connecting joint, 2 is a buffer, 3 is a positioning bolt, 4 is a clamp, 5 is a bushing, and 6 is a bolt body.

detailed description

In order to make the purpose, technical solutions and advantages of the utility model more clear, the technical solution in the utility model embodiment will be described in more detail below in conjunction with the accompanying drawings in the utility model embodiment. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some embodiments of the present utility model, but not all embodiments. The embodiments described below with reference to the figures are exemplary and are intended to explain the present invention, but should not be construed as limitations of the present invention. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model. Embodiments of the utility model will be described in detail below in conjunction with the accompanying drawings.

In describing the present invention, it should be understood that the terms "central", "longitudinal", "transverse", "front", "rear", "left", "right", "vertical", "horizontal" , "top", "bottom", "inner", "outer" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating Or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the protection scope of the present utility model.

As shown in Fig. 1, a kind of high-strength bolt connection structure of the present utility model is applied to the connection between the aircraft buffer and the landing gear, and is used to connect the connecting joint 1 and the buffer 2, and the connecting joint 1 and the buffer 2 are equipped with There are through holes, and the high-strength bolt connection structure includes positioning bolts 3, clamps 4, bushings 5 and bolt main body 6. The bushing 5 is installed in the through hole of the connecting joint 1. The bolt main body 6 is a hollow structure with a boss at one end. , the other end is provided with a plurality of through holes perpendicular to the axis of the bolt main body 6, the bolt main body 6 passes through the bushing 5 and the buffer 2, the clamp 4 is provided with a through hole, and the clamp 4 is inserted into the bolt main body 6. At one end of the through hole, the positioning bolt 3 passes through the through hole on the clamp 4 and the through hole on the bolt body 6 , so as to make the clamp 4 and the bolt body 6 fixedly connected.

It should be pointed out that the number of through holes on the bolt body 6 of the present invention is two. Specifically, the number of through holes in the bolt body 6 determines the number of positioning bolts 3 , and the positioning bolts 3 can be increased or decreased according to usage requirements, and the corresponding number of through holes also needs to be increased or decreased.

It should be pointed out that the inner surface and the outer surface of the bolt body 6 of the present invention are light yellow surfaces, and the smooth surface can reduce the stress concentration and fatigue load of the bolt body 6 during use, thereby effectively improving the service life of the bolt .

It should be pointed out that the bolt body 6 of the present invention is made of high-strength alloy, which can meet the requirements of heavy load during use.

In the high-strength bolt connection structure of the utility model, the bolt main body 6 adopts a hollow structure, which reduces the dead weight of the bolt; the bolt tail is provided with a through hole, and the positioning bolt 3 is passed through the through hole to limit the axial position of the bolt main body 6, which greatly reduces the bolt body. The axial use of 6 makes the bolt body 6 only bear the shear load, which improves the service life of the bolt; the bolt body 6 adopts a smooth outer surface instead of the thread, which eliminates the problem of poor fatigue performance of the threaded part and greatly improves the life of the bolt body 6; positioning The size of the bolt 3 is small, and there is no need for a special large wrench to tighten the bolt body 6, which greatly reduces the maintenance cost; when a failure occurs, only the positioning bolt 3 needs to be replaced, and the connection structure does not need to be dismantled as a whole, which greatly saves maintenance costs and cycle.

The above is only the best specific implementation of the utility model, but the scope of protection of the utility model is not limited thereto, any skilled person familiar with the technical field can easily think of All changes or replacements should fall within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

Claims (4)

1. A high-strength bolt connection structure, used to connect the connection joint (1) with the buffer (2), the connection joint (1) and the buffer (2) are all provided with through holes, it is characterized in that the The high-strength bolt connection structure includes a positioning bolt (3), a clamp (4), a bushing (5) and a bolt body (6), The bushing (5) is installed in the through hole of the connecting joint (1); The bolt body (6) is a hollow structure, one end is provided with a boss, and the other end is provided with a plurality of through holes perpendicular to the axis of the bolt body (6), and the bolt body (6) passes through the bushing (5) and buffer(2); The clamp (4) is provided with a through hole, and the clamp (4) is inserted into the end of the bolt body (6) provided with the through hole; The positioning bolt (3) passes through the through hole on the clip (4) and the through hole on the bolt body (6), and is used for fixedly connecting the clip (4) to the bolt body (6). 2. A high-strength bolt connection structure according to claim 1, characterized in that the number of through holes on the bolt body (6) is two. 3. A high-strength bolt connection structure according to claim 1, characterized in that the inner surface and the outer surface of the bolt body (6) are both smooth surfaces. 4. A high-strength bolt connection structure according to claim 1, characterized in that the bolt body (6) is made of high-strength alloy steel.