CN214617411U

CN214617411U - Nested bolt fastener

Info

Publication number: CN214617411U
Application number: CN202022523397.6U
Authority: CN
Inventors: 薛加永
Original assignee: Jiangsu Jinxia Fastener Co ltd
Current assignee: Jiangsu Jinxia Fastener Co ltd
Priority date: 2020-11-05
Filing date: 2020-11-05
Publication date: 2021-11-05
Anticipated expiration: 2030-11-05

Abstract

The utility model discloses a nested bolt fastener, including the bolt, the fastener is equipped with to bolt one end, and the fastener includes annular portion and a plurality of foot, and annular portion installs on the bolt, and each foot one end concreties in annular portion, and the other end is along the length direction of bolt and towards the direction slope of keeping away from the bolt, and the nut is equipped with to the bolt other end, the utility model discloses novel structure, simple structure is reliable, and the accessory is few, and the equipment installation is swift, simple to operate, stable in structure, and the fastening is reliable and stable, has satisfied present operation requirement.

Description

Nested bolt fastener

Technical Field

The utility model relates to a fastener field, concretely relates to nested bolt fastener.

Background

Currently, in the fields of civil construction and mechanical installation, the installation requirement for connecting and fastening structural components is large. In the case of bolts which are currently in common use, when fastening and connecting members, workers need to work on both sides of the members at the same time, namely, insert a bolt with a nut on one side and then tighten the nut with a tool on the other side. The connecting and fastening method has simple structure, convenient operation and good bearing capacity, but is only suitable for the members with the open cross sections, and the common bolt and nut connecting and fastening method cannot be used in some special occasions, such as the connecting and fastening of the members with the closed cross sections or the members inconvenient to operate at the other side. Such as: in steel pipe structures and steel pipe concrete structures, beam column connection nodes cannot be fastened and installed by the common bolt-nut connection fastening method because steel pipe columns are closed sections and cannot be operated on two sides and can only be connected and installed on one side.

Although some bolt fasteners which can be used for unilateral operation exist at present, the bolt fasteners have more accessories, higher cost, more assembly, operation and use steps and inconvenient use, and cannot meet the requirement of the existing rapid installation.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a nested bolt fastener, which comprises a bolt, wherein one end of the bolt is provided with a fastener, the fastener comprises an annular part and a plurality of leg parts, the annular part is arranged on the bolt, one end of each leg part is fixedly connected on the annular part, the other end of each leg part inclines along the length direction of the bolt and towards the direction far away from the bolt, and the other end of the bolt is provided with a nut;

in the process of fastening the closed section member, the leg portion of the fastener takes two states: the method comprises the following steps: when the fastener passes through the upper hole of the component, the aperture of the upper hole of the component is larger than the outer diameter of the annular part and smaller than the maximum outer circle diameter surrounded by the inclined ends of the leg parts, each leg part is in a contraction state of abutting against the inner wall of the hole and approaching the bolt, the second is that after the fastener passes through the upper hole of the component, each leg part is in a reset state of returning the inclined end of the leg part to the direction far away from the bolt to the initial state, the third is that the nut is screwed and abuts against the external component to drive the bolt to move outwards, and each leg part is in an expansion state of abutting against the internal component and moving outwards at the inclined end of the leg part

Further: the nut further comprises a gasket, the gasket is assembled at one end of the nut close to the fastener, and the gasket is used for abutting against the external component.

Further: the fastener is welded at the bolt end.

Further: the leg portions are distributed in a circumferential array about the axis of the ring portion.

Further: the leg part is a needle-shaped structure which is bent towards the direction away from the bolt.

The utility model discloses a technological effect and advantage: the utility model discloses novel structure, simple structure is reliable, and the accessory is few, and the equipment installation is swift, simple to operate, stable in structure, the fastening is reliable and stable, has satisfied present operation requirement.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Description of reference numerals: 100-bolt, 110-fastener, 111-ring, 112-foot, 120-nut, 130-washer, 200-inner, 210-hole, 300-outer.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Examples

Referring to fig. 1, a nested bolt fastener includes a bolt 100, a fastener 110 is mounted at one end of the bolt 100, the fastener 110 includes a ring portion 111 and a plurality of leg portions 112, the ring portion 111 is mounted on the bolt 100, one end of each leg portion 112 is fixed to the ring portion 111, the other end is inclined along the length direction of the bolt 100 and away from the bolt 100, and a nut 120 is mounted at the other end of the bolt 100;

during fastening of the closed-section member, the leg portion 112 of the fastener 110 takes two states: the method comprises the following steps: when the fastener 110 passes through the hole 210 of the member, the hole 210 of the member has a diameter larger than the outer diameter of the annular portion 111 and smaller than the maximum outer diameter surrounded by the inclined ends of the leg portions 112, each leg portion 112 is in a contracted state abutting against the inner wall of the hole 210 and approaching the bolt 100, and in a second expanded state, after the fastener 110 passes through the hole of the member, each leg portion 112 is in a reset state in which the inclined end thereof returns to its original state in a direction away from the bolt 100, and in a third expanded state, the nut 120 is tightened and abuts against the outer member 300 to drive the bolt 100 to advance outward of the hole 210, and each leg portion 112 is in an expanded state in which the inclined end thereof abuts against the inner member 200 and moves outward.

Also included is a washer 130, the washer 130 being fitted over an end of the nut 120 adjacent the fastener 110, the washer 130 being adapted to abut the outer member 300.

Fastener 110 is welded to the end of bolt 100.

The leg portions 112 are distributed in a circumferential array about the axis of the annular portion 111.

The leg portion 112 has a needle-like structure bent away from the bolt.

When the utility model is used, firstly, the bolt with one end of the fastener 110 is inserted into the holes 210 on the two components, when the fastener 110 passes through the holes 210 on the components, each leg part 112 is abutted against the inner wall of the hole 210 and is close to and shrinks towards the bolt 100, when the resistance is larger, the bolt can be driven by a hammer, then, after the fastener 110 passes through the holes on the components, each leg part 112 is in the inclined end and returns to the initial state towards the direction far away from the bolt 100, then the nut 120 is screwed up and abutted against the gasket 130, the gasket 130 is abutted against and abutted against the external component 300, the bolt 100 is driven to advance towards the outside of the hole 210, the inclined end of each leg part 112 is abutted against the internal component 200 and moves towards the outside, meanwhile, the end part of each leg part 112 is abutted against the internal component 200, when the traditional bolt fastener is used, when the nut 120 rotates, the bolt 100 follows the rotating problem, each needle-shaped leg part 112 and the internal component 200 form stable limit fit, so that the bolt 100 is hard to be rotated, so that the nut 120 can be stably tightened, and after the nut 120 is tightened, the leg parts 112 are completely spread and pressed against the inner member 200, thereby performing a fastening function.

The utility model discloses novel structure, simple structure is reliable, and the accessory is few, and the equipment installation is swift, simple to operate, stable in structure, the fastening is reliable and stable, has satisfied present operation requirement.

It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present disclosure, all other embodiments obtained by a person of ordinary skill in the art and related fields without creative efforts shall fall within the protection scope of the present disclosure. The structures, devices, and methods of operation of the present invention, not specifically described and illustrated, are generally practiced by those of ordinary skill in the art without specific recitation or limitation.

Claims

1. A nested bolt fastener characterized by: the bolt comprises a bolt (100), a fastening piece (110) is arranged at one end of the bolt (100), the fastening piece (110) comprises an annular part (111) and a plurality of leg parts (112), the annular part (111) is arranged on the bolt (100), one end of each leg part (112) is fixedly connected to the annular part (111), the other end of each leg part (112) inclines towards the direction far away from the bolt (100) along the length direction of the bolt (100), and a nut (120) is arranged at the other end of the bolt (100);

during fastening of the closed-section component, the leg portion (112) of the fastener (110) assumes two states: the method comprises the following steps: when the fastener (110) passes through the hole (210) on the component, the aperture of the hole (210) on the component is larger than the outer diameter of the annular part (111) and smaller than the maximum outer diameter surrounded by the inclined ends of the leg parts (112), each leg part (112) is in a contraction state abutting against the inner wall of the hole (210) and approaching to the bolt (100), the second is that after the fastener (110) passes through the hole on the component, each leg part (112) is in a reset state that the inclined end returns to the initial state in the direction away from the bolt (100), the third is that the nut (120) is screwed and abuts against the external component (300), the bolt (100) is driven to move towards the outside of the hole (210), and each leg part (112) is in an expansion state that the inclined end abuts against the internal component (200) and moves towards the outside.

2. A nested bolt fastener according to claim 1, wherein: the nut further comprises a gasket (130), the gasket (130) is assembled at one end of the nut (120) close to the fastener (110), and the gasket (130) is used for abutting against the external component (300).

3. A nested bolt fastener according to claim 1, wherein: the fastener (110) is welded to the end of the bolt (100).

4. A nested bolt fastener according to claim 1, wherein: the leg portions (112) are arranged in a circumferential array around the axis of the annular portion (111).

5. A nested bolt fastener according to claim 1, wherein: the leg part (112) has a needle-like structure bent in a direction away from the bolt.