CN210371557U

CN210371557U - Directional anti-skid T-shaped bolt

Info

Publication number: CN210371557U
Application number: CN201921157444.0U
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: 2019-07-22
Filing date: 2019-07-22
Publication date: 2020-04-21
Anticipated expiration: 2029-07-22

Abstract

The utility model belongs to the technical field of the fastener, especially, relate to a directional anti-skidding T shape bolt. The technical problems that the design is unreasonable and the like in the prior art are solved. This directional anti-skidding T shape bolt, through cold-heading shaping, including the screw thread section, be connected with the directional section of rhombus in the rear end of screw thread section to and connect the rectangular block of keeping away from screw thread section one end at the directional section of rhombus, and two relative bights of the directional section of rhombus are equipped with the circular arc chamfer, be equipped with a plurality of anti-skidding sand grips that set up along rectangular block length direction interval on the one end terminal surface that the rectangular block is close to the directional section of rhombus, two long sides of rectangular block flush with the corresponding both sides face of the directional section of rhomb. The utility model has the advantages that: the belt is antiskid and the structure is convenient to process.

Description

Directional anti-skid T-shaped bolt

Technical Field

The utility model belongs to the technical field of the fastener, especially, relate to a directional anti-skidding T shape bolt.

Background

The fastener belongs to a common product, and the fastener comprises a bolt, a nut and the like.

The field of application of fasteners is also very wide, for example in mechanical equipment, as well as in construction joints.

In some special installation connection positions, the setting of the angle necessarily requires the fastener to have an orientation function.

For example, chinese patent discloses a directional expansion bolt, patent No. 201020549482.3, which is composed of a nut, a washer, a screw and an expansion sleeve. The expansion sleeve is formed by connecting an annular section of the expansion sleeve and an opening section of the expansion sleeve, the expansion sleeve is sleeved outside the round screw, the bottom of the round screw is connected with a screw rod circle-to-ellipse gradual change section to form a whole, the direction indicating groove is positioned at the top of the round screw, the upper part of the round screw is provided with a notch groove, the gasket and the nut are connected with the round screw through the groove, the round screw is provided with a directional bulge, and the directional bulge is positioned in the opening section of the expansion sleeve. In order to achieve the directional expansion effect, the end of the screw rod adopts a gradually-changed section from a circle to an ellipse, the opening section of the expansion sleeve adopts a directional opening mode, and when the expansion sleeve works, the long axis direction of the elliptic section of the screw rod and the vertical opening direction of the expansion sleeve are in the expansion direction at the same time to generate directional expansion. The scheme selects the expansion in the direction that the structure can bear the expansion force, and the expansion is not generated in the direction that the structure can not bear the expansion force, so that the good anchoring effect is achieved, the structure is not cracked, and the durability of the structure is not influenced.

Although the bolt has the advantages, the thread processing of the round screw is inconvenient due to the gradual transition from the round screw to the oval screw, and the round screw does not have the anti-skid function, so that the stability after installation and fixation is still required to be further improved.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned problem, a take antiskid and structure convenient to process's directional anti-skidding T shape bolt is provided.

In order to achieve the above purpose, the utility model adopts the following technical proposal: this directional anti-skidding T shape bolt, through cold-heading shaping, including the screw thread section, be connected with the directional section of rhombus in the rear end of screw thread section to and connect the rectangular block of keeping away from screw thread section one end at the directional section of rhombus, and two relative bights of the directional section of rhombus are equipped with the circular arc chamfer, be equipped with a plurality of anti-skidding sand grips that set up along rectangular block length direction interval on the one end terminal surface that the rectangular block is close to the directional section of rhombus, two long sides of rectangular block flush with the corresponding both sides face of the directional section of rhomb.

In the oriented anti-skid T-shaped bolt, the rhombic oriented section is positioned in the middle of the lower end face of the rectangular block.

In the above-mentioned directional anti-slip T-shaped bolt, the end of the front end of the threaded section is provided with a straight groove.

In the above-mentioned directional antiskid T-shaped bolt, the centers of the two arc chamfers coincide.

In the directional anti-skidding T-shaped bolt, four edges of one end, far away from the rhombic directional section, of the rectangular block are respectively provided with an inclined chamfer.

In the above-mentioned directional anti-slip T-bolt, the length of the threaded section is longer than that of the diamond-shaped directional section.

Compared with the prior art, the directional anti-skidding T-shaped bolt has the advantages that:

two relative circular arc chamfers can be convenient for the clamping and fixing of lathe work before the thread processing, can improve production efficiency, and simultaneously, other two angles of the rhombus orientation section form the orientation effect.

It can play the effect of interlock contact surface of antiskid sand grip, can improve the fixed stability of installation.

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 thread section 1, a straight groove 11, a diamond-shaped orientation section 2, a circular arc chamfer 21, a rectangular block 3, an antiskid convex strip 31, a long side surface 32 and an inclined chamfer 33.

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 fig. 1-2, the directional anti-slip T-shaped bolt is formed by cold heading, which can ensure the precision of a blank piece and the overall structural strength.

The thread rolling machine comprises a thread section 1, and threads on the thread section 1 are machined through a thread rolling machine.

The rear end of the thread section 1 is connected with a diamond-shaped directional section 2, and the length of the thread section 1 is longer than that of the diamond-shaped directional section 2. And the rectangular block 3 is connected to one end of the rhombic orientation section 2, which is far away from the thread section 1, and two opposite corners of the rhombic orientation section 2 are provided with arc chamfers 21.

Two relative circular arc chamfers 21 can be convenient for the clamping and fixing of lathe work before the thread processing, can improve production efficiency, and simultaneously, other two angles of the rhombus orientation section 2 form the orientation effect.

Be equipped with a plurality of anti-skidding sand grips 31 that set up along 3 length direction intervals of rectangular block on the one end terminal surface that rectangular block 3 is close to rhombus orientation section 2, anti-skidding sand grip 31 is the cusp, forms the V-arrangement groove between two adjacent anti-skidding sand grips 31, and its effect that can play the interlock contact surface of anti-skidding sand grip 31 can improve the fixed stability of installation.

The two long sides 32 of the rectangular block 3 are flush with the corresponding two sides of the diamond-shaped directional section 2, respectively. The structure can facilitate cold heading forming processing.

Secondly, the rhombus-shaped directional section 2 is located in the middle of the lower end face of the rectangular block 3.

In addition, a straight groove 11 is arranged at the front end of the threaded section 1. The straight groove 11 can facilitate the ejection of the ejection block in the thread rolling process, and can improve the thread rolling precision.

The centers of the two arc chamfers 21 coincide. The structure can facilitate the development and design of a subsequent clamping head and improve the stability of clamping.

Four edges of one end of the rectangular block 3, which is far away from the diamond-shaped directional section 2, are respectively provided with an inclined chamfer 33. The inclined chamfer 33 can save the material input amount.

A designed strip-shaped groove, a diamond-shaped hole positioned at the bottom of the strip-shaped groove and a nail passing hole communicated with the diamond-shaped hole are arranged on a mechanical device or a building fixing surface, the directional anti-skidding T-shaped bolt at the moment is inserted, and then the nut sleeved on the thread section 1 is locked.

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

1. Directional anti-skidding T shape bolt, through cold-heading shaping, including screw thread section (1), a serial communication port, rear end in screw thread section (1) is connected with rhombus orientation section (2), and connect rectangular block (3) of keeping away from screw thread section (1) one end in rhombus orientation section (2), and two relative bights in rhombus orientation section (2) are equipped with circular arc chamfer (21), be equipped with a plurality of anti-skidding sand grip (31) that set up along rectangular block (3) length direction interval on rectangular block (3) one end terminal surface that is close to rhombus orientation section (2), two long side (32) of rectangular block (3) flush with the corresponding both sides face of rhombus orientation section (2) respectively.

2. An oriented anti-slip T-bolt according to claim 1, characterised in that said rhomboidal orientation section (2) is located in the middle of the lower end face of the rectangular block (3).

3. The T-bolt of claim 1, characterized in that the front end of the threaded section (1) is provided with a straight groove (11).

4. An oriented anti-slip T-bolt according to claim 1 wherein the centres of the two rounded chamfers (21) coincide.

5. An oriented anti-slip T-bolt according to claim 1 characterised in that the rectangular block (3) is provided with a bevelled chamfer (33) at each of the four edges of the end remote from the diamond-shaped oriented section (2).

6. An oriented anti-slip T-bolt as claimed in claim 1 wherein the length of said threaded section (1) is longer than the length of said diamond-oriented section (2).