CN210290457U

CN210290457U - T-shaped high-strength anti-slip bolt for ventilation duct

Info

Publication number: CN210290457U
Application number: CN201921156225.0U
Authority: CN
Inventors: 张小军; 何永军; 张兰
Original assignee: Jiaxing Dali Precision Fastener Co Ltd
Current assignee: Jiaxing Dali Precision Fastener Co Ltd
Priority date: 2019-07-23
Filing date: 2019-07-23
Publication date: 2020-04-10
Anticipated expiration: 2029-07-23

Abstract

The utility model belongs to the technical field of the fastener, especially, relate to a T type high strength antiskid bolt for air pipe. The technical problems that the design is unreasonable and the like in the prior art are solved. This T type high strength antiskid bolt for air pipe, through the cold-heading shaping, including the cold-heading threaded rod, the cold-heading rectangle piece and the cold-heading threaded rod of connection in cold-heading rectangle piece of cold-heading threaded rod one end are regional, the one end tip of keeping away from the cold-heading rectangle piece at the cold-heading threaded rod is equipped with a straight line groove, wherein a diagonal both corners portion at the cold-heading rectangle piece is equipped with cold-heading circular arc convex surface respectively, the centre of a circle of two cold-heading circular arc convex surfaces is heavily merged and is located the axis of cold-heading threaded rod, it is regional that a terminal surface both ends that are close to the cold-heading threaded rod at the cold-heading rectangle piece are equipped with the anti-skidding arch that uses the cold-heading. The utility model has the advantages that: the belt is anti-skid and has higher structural strength.

Description

T-shaped high-strength anti-slip bolt for ventilation duct

Technical Field

The utility model belongs to the technical field of the fastener, especially, relate to a T type high strength antiskid bolt for air pipe.

Background

The ventilation pipeline is a metal or composite pipeline for ventilation and air conditioning engineering of industrial and civil buildings, and is a municipal infrastructure for circulating air and reducing the concentration of harmful gases.

It adopts pipeline connecting bolt to fix traditional ventilation pipe, because it links to each other and has heavier weight of pipeline, under the effect of pipeline self gravity, it needs to have higher intensity to the installation fixing bolt of fixed pipeline, and it is ordinary bolt for current pipeline, it has the defect on bearing performance of ordinary bolt, lead to need to design a lot of bolts and go to be used for the installation fixed, secondly, it does not have anti-skidding performance of ordinary bolt, based on foretell problem, consequently need the development design a section can solve above-mentioned technical problem's bolt for the pipeline.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned problem, a take antiskid and structural strength height more T type high strength antiskid bolt for air pipe is provided.

In order to achieve the above purpose, the utility model adopts the following technical proposal: this T type high strength antiskid bolt for air pipe, through the cold-heading shaping, including the cold-heading threaded rod, the cold-heading rectangle piece and the cold-heading threaded rod of connection in cold-heading rectangle piece of cold-heading threaded rod one end are regional, the one end tip of keeping away from the cold-heading rectangle piece at the cold-heading threaded rod is equipped with a straight line groove, wherein a diagonal both corners portion at the cold-heading rectangle piece is equipped with cold-heading circular arc convex surface respectively, the centre of a circle of two cold-heading circular arc convex surfaces is heavily merged and is located the axis of cold-heading threaded rod, it is regional that a terminal surface both ends that are close to the cold-heading threaded rod at the cold-heading rectangle piece are equipped with the anti-skidding arch that uses the cold-heading.

In foretell T type high strength antiskid bolt for air pipe, every non-slip raised area includes a plurality of non-slip raised that set up along cold-heading rectangle piece width direction interval respectively, forms the bar recess between two adjacent non-slip raised.

In the bolt for the T-shaped high-strength antiskid ventilating duct, the height of the antiskid lug boss is 0.5-1.0 mm.

In foretell T type high strength antiskid bolt for air pipe, cold-heading rectangular piece keep away from a terminal surface both ends of cold-heading threaded rod and be equipped with the inclined plane respectively.

In foretell T type high strength antiskid bolt for air pipe, the one end tip that keeps away from cold-heading rectangle piece of cold-heading threaded rod be equipped with the chamfer.

In foretell T type high strength antiskid bolt for air pipe, cold-heading threaded rod and cold-heading rectangle piece pass through the circular arc concave surface and connect.

In foretell T type high strength antiskid bolt for air pipe, inclined plane and cold-heading rectangle piece be close to the terminal surface formation acute angle of cold-heading threaded rod.

In the bolt for the T-shaped high-strength antiskid ventilating duct, the thickness of the cold-heading rectangular block is 1/3 times the length of the cold-heading threaded rod.

Compared with the prior art, this T type high strength antiskid bolt for air pipe's advantage lies in:

the design of the anti-skid protrusions can increase friction force, so that the anti-skid performance is improved, and looseness caused by self-sliding after the anti-skid protrusions are installed in place is avoided.

The precision of blank piece can be guaranteed in its cold heading shaping to and holistic structural strength, further improved bearing performance.

Drawings

Fig. 1 is a schematic structural diagram provided by the present invention.

Fig. 2 is a schematic view of another viewing angle structure provided by the present invention.

In the figure, a cold heading threaded rod 1, a straight groove 11, a chamfer 12, an arc concave surface 13, a cold heading rectangular block 2, a cold heading arc convex surface 21, an anti-skid convex area 22, an anti-skid convex 22a, a strip-shaped groove 22b and an inclined surface 23.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in figures 1-2, the T-shaped high-strength antiskid ventilation pipeline bolt is formed through cold heading, the precision of a blank piece and the overall structural strength can be ensured through cold heading forming, and the bearing performance is further improved.

Including cold-heading threaded rod 1, connect at the cold-heading rectangular piece 2 of cold-heading threaded rod 1 one end and cold-heading threaded rod 1 and connect at the central zone of cold-heading rectangular piece 2, the thickness of cold-heading rectangular piece 2 is 1/3 of cold-heading threaded rod 1 length. This structure ensures a strong load-bearing capacity. The end part of one end of the cold heading threaded rod 1, which is far away from the cold heading rectangular block 2, is provided with a straight groove 11, and the straight groove 11 is convenient for subsequently propping against the rolling thread.

Two bights of one of them diagonal of cold-heading rectangular piece 2 are equipped with cold-heading circular arc convex surface 21 respectively, and the centre of a circle coincidence of two cold-heading circular arc convex surfaces 21 is located the axis of cold-heading threaded rod 1, through two cold-heading circular arc convex surfaces 21 and with the combined action of a word groove 11, the processing of follow-up screw thread of can being convenient for to and the cylindrical grinding processing to the threaded rod before the processing screw thread, improved the precision.

Two ends of one end face of the cold heading rectangular block 2 close to the cold heading threaded rod 1 are respectively provided with an anti-skid convex area 22 which is symmetrically distributed by taking the cold heading threaded rod 1 as a center. Specifically, each of the land areas 22 includes a plurality of lands 22a spaced apart in the width direction of the cold-heading rectangular block 2, and a strip groove 22b is formed between two adjacent lands 22 a.

The height of the antiskid projection 22a is 0.5-1.0 mm.

The anti-slip protrusions 22a are designed to increase friction force to improve anti-slip performance, thereby preventing looseness caused by self-sliding after being installed in place.

Secondly, inclined planes 23 are respectively arranged at two ends of one end face, far away from the cold heading threaded rod 1, of the cold heading rectangular block 2. The bevel 23 saves material and at the same time further reduces the contact area with the environment.

The inclined surface 23 and one end surface of the cold-heading rectangular block 2 near the cold-heading threaded rod 1 form an acute angle.

And a chamfer 12 is arranged at the end part of one end of the cold heading threaded rod 1 far away from the cold heading rectangular block 2. The chamfer 12 facilitates the assembly connection.

Secondly, the cold-heading threaded rod 1 and the cold-heading rectangular block 2 are connected through the arc concave surface 13. The structure can facilitate cold heading forming.

During the installation, cold-heading threaded rod 1 runs through air pipe, and cold-heading rectangular piece 2 then arranges the rectangular hole of air pipe inner wall in, then realizes that air pipe's installation is fixed through the external screw thread on cold-heading threaded rod 1.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

The utility model provides a T type high strength antiskid bolt for air pipe, a serial communication port, including cold-heading threaded rod (1), connect cold-heading rectangular piece (2) and cold-heading threaded rod (1) of cold-heading threaded rod (1) one end and connect the central zone in cold-heading rectangular piece (2), the one end tip of keeping away from cold-heading rectangular piece (2) in cold-heading threaded rod (1) is equipped with a straight flute (11), wherein a diagonal both corners portion in cold-heading rectangular piece (2) is equipped with cold-heading circular arc convex surface (21) respectively, the centre of a circle of two cold-heading circular arc convex surfaces (21) is heavily merged and is located the axis of cold-heading threaded rod (1), be equipped with respectively at a terminal surface both ends that cold-heading rectangular piece (2) are close to cold-heading threaded rod (1) and use cold-heading threaded rod (1) as the regional (22) of central symmetry distribution's anti-skid.
2. The bolt for the T-shaped high-strength antiskid ventilation pipeline according to claim 1, wherein each antiskid raised area (22) comprises a plurality of antiskid raised parts (22a) arranged at intervals along the width direction of the cold-heading rectangular block (2), and a strip-shaped groove (22b) is formed between every two adjacent antiskid raised parts (22 a).
3. The bolt for the T-shaped high-strength antiskid ventilation duct according to claim 2, characterized in that the height of the antiskid projections (22a) is 0.5-1.0 mm.
4. The bolt for the T-shaped high-strength anti-skidding ventilating duct according to claim 1, characterized in that two ends of one end face of the cold-heading rectangular block (2) far away from the cold-heading threaded rod (1) are respectively provided with an inclined surface (23).
5. The bolt for the T-shaped high-strength antiskid ventilation pipeline is characterized in that a chamfer (12) is arranged at the end part of one end, far away from the cold-heading rectangular block (2), of the cold-heading threaded rod (1).
6. The bolt for the T-shaped high-strength antiskid ventilation pipeline is characterized in that the cold-heading threaded rod (1) is connected with the cold-heading rectangular block (2) through an arc concave surface (13).
7. The bolt for the T-shaped high-strength antiskid ventilation pipeline is characterized in that an acute angle is formed between the inclined surface (23) and one end surface, close to the cold-heading threaded rod (1), of the cold-heading rectangular block (2).
8. The bolt for the T-shaped high-strength antiskid ventilation pipeline, according to the claim 1, is characterized in that the thickness of the cold heading rectangular block (2) is 1/3 of the length of the cold heading threaded rod (1).