阅读说明：本技术 一种永不松动的螺栓螺母件 (Bolt nut piece capable of never loosening ) 是由 郭惟 于 2019-09-29 设计创作，主要内容包括：本发明公开了一种永不松动的螺栓螺母件,包括主螺母、主螺栓、锁止螺母和锁止螺栓,所述锁止螺母位于主螺母的顶端,锁止螺母与主螺母二者固定连接；所述主螺栓顶端向下设有一段螺纹孔,所述锁止螺母、所述螺纹孔具有相同孔径以及同向的螺纹,所述主螺母与主螺栓顺时针/逆时针旋转配合；所述锁止螺栓与所述锁止螺母、所述螺纹孔同时逆时针/顺时针旋转配合。本发明通过设置主螺栓、主螺母、锁止螺栓及锁止螺母,固定之后不易松动,且结构简单,制造工艺简单,成本低,易于装配。(The invention discloses a bolt and nut piece which can never loosen, which comprises a main nut, a main bolt, a locking nut and a locking bolt, wherein the locking nut is positioned at the top end of the main nut, and the locking nut and the main nut are fixedly connected; a section of threaded hole is formed in the top end of the main bolt downwards, the locking nut and the threaded hole are provided with threads with the same aperture and the same direction, and the main nut and the main bolt are in clockwise/anticlockwise rotation fit; the locking bolt is matched with the locking nut and the threaded hole in a counterclockwise/clockwise rotating mode simultaneously. According to the invention, the main bolt, the main nut, the locking bolt and the locking nut are arranged, so that the locking bolt is not easy to loosen after being fixed, and the locking bolt is simple in structure, simple in manufacturing process, low in cost and easy to assemble.)

1. A bolt and nut piece which can never loosen is characterized by comprising a main nut, a main bolt, a locking nut and a locking bolt, wherein the locking nut is positioned at the top end of the main nut and fixedly connected with the main nut;

a section of threaded hole is formed in the top end of the main bolt downwards, the locking nut and the threaded hole are provided with threads with the same aperture and the same direction, and the main nut and the main bolt are in clockwise/anticlockwise rotation fit; the locking bolt enters the locking nut and the threaded hole and is in simultaneous anticlockwise/clockwise rotation fit with the locking nut and the threaded hole.

2. A never-loosening bolt-nut member as in claim 1, wherein said main nut and said lock nut have the same outer diameter.

Technical Field

The invention relates to the technical field of mechanical parts, in particular to a bolt and nut piece which is never loosened.

Background

Nut and bolt are the most commonly used parts for fastening, and the commonly used nut and bolt is used on some mechanical devices. The nut can be loosened due to vibration caused by mechanical operation, so that potential safety hazards are brought to production and life, normal operation of machinery is influenced, and particularly on a train running at a high speed, the nut can be easily loosened due to the vibration caused by the high-speed motion of the train, so that the safety of the train and passengers can be endangered.

The existing anti-loosening nuts in the market are partially matched with special bolts or special gaskets, and the anti-loosening principle is that the nuts or the gaskets are mostly provided with rough edges and corners to increase the friction force of stress surfaces of the nuts or the gaskets and delay the loosening time of the nuts, so that the nuts can not be loosened forever in a true sense, the production process is complex, and the production materials are also demanding.

Some anti-loosening nuts adopt special locking structures to prevent the nuts from loosening, but the technical structure is complex, the requirement on the manufacturing process degree is high, and the assembly effect is ensured.

Disclosure of Invention

The invention aims to provide a bolt and nut piece which is never loosened, has the advantages of difficult loosening after being fixed, simple structure, simple manufacturing process, low cost and easy assembly.

In order to achieve the purpose, the invention provides the following technical scheme: a bolt and nut piece capable of never loosening comprises a main nut, a main bolt, a locking nut and a locking bolt, wherein the locking nut is positioned at the top end of the main nut, and the locking nut and the main nut are fixedly connected; a section of threaded hole is formed in the top end of the main bolt downwards, the locking nut and the threaded hole are provided with threads with the same aperture and the same direction, and the main nut and the main bolt are in clockwise/anticlockwise rotation fit; the locking bolt enters the locking nut and the threaded hole and is in simultaneous anticlockwise/clockwise rotation fit with the locking nut and the threaded hole.

Preferably, the main nut and the lock nut have the same outer diameter.

Compared with the prior art, the invention has the beneficial effects that: through setting up kingbolt, main nut, locking bolt and locking nut, difficult not hard up after fixed, and simple structure, manufacturing process is simple, and is with low costs, easily assembly.

Drawings

FIG. 1 is a schematic structural view of an assembly body of the present invention;

FIG. 2 is a schematic view of the construction of the main bolt of the present invention;

FIG. 3 is a schematic structural view of the main nut and the lock nut of the present invention;

fig. 4 is a schematic structural view of the locking bolt of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 2, the main bolt comprises a main bolt head 1 and a main bolt rod 2, a section of threaded hole 3 is formed in the top end of the main bolt rod 2 downwards, and an external thread 4 is formed on the main bolt rod 2.

As shown in fig. 3, the lock nut 8 is located at the top end of the main nut 5, and the two are fixedly connected. The main nut 5 and the lock nut 8 have the same outer diameter. The locking nut 8 and the threaded hole 3 have the same hole diameter and the same thread direction.

As shown in fig. 4, the locking bolt includes a locking bolt head 6 and a locking bolt shaft 7.