Torsional shear type hexagonal antiskid bolt

Abstract

The utility model discloses a torsional shear type hexagonal anti-slip bolt which comprises a countersunk bolt, a nut and a gasket, the nut is composed of a hexagonal sleeve and an internal thread sleeve, a shifting piece is arranged on the outer end face of the internal thread sleeve, a sliding groove is formed in the inner end face of the hexagonal sleeve, and the internal thread sleeve is in sliding connection with the hexagonal sleeve through matching of the shifting piece and the sliding groove. A capsule is arranged in the sliding groove, screw glue is wrapped in the capsule, and a glue guide hole is formed in the side end face of the shifting piece. According to the utility model, the capsule with the screw glue is arranged in the nut, after the nut is screwed, the internal thread sleeve and the hexagonal sleeve extrude the capsule, so that the space between the internal thread sleeve and the screw rod is filled with the screw glue for gluing, the nut is prevented from loosening, and the glue injection groove is formed in the internal thread sleeve, so that linear smearing is facilitated; and it is guaranteed that the gluing amount of each thread is relatively uniform, the gluing quality of the screw glue is improved, the gluing amount is conveniently controlled through the capsule structure, and the smearing effect of the screw glue is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hexagonal bolts, in particular to a torsion shear type hexagonal anti-slip bolt. Background Art

[0002] Steel structure bolts are divided into torsion shear type high-strength bolts and large hexagonal high-strength bolts. Large hexagonal high-strength bolts belong to the high-strength grade of ordinary screws, while torsion shear type high-strength bolts are improved versions of large hexagonal high-strength bolts. For better construction, large hexagonal steel structure bolts consist of a bolt, a nut, and two washers, and torsion shear type steel structure bolts consist of a bolt, a nut, and a washer. However, torsion shear type steel structure bolts do not have an anti-slip structure design after installation. When the thread slips after long-term use, it will cause the tightened parts to loosen.

[0003] In the prior art, screw glue is mostly applied on the side end face of the bolt to prevent the nut from loosening. However, the application of screw glue has certain requirements. Applying too much screw glue may easily make the bolt unable to be disassembled, while applying too little screw glue may easily make the bolt loose. In addition, the screw glue needs to be applied linearly along the axial direction of the bolt, which is cumbersome to operate. Therefore, a torsion shear type hexagonal anti-slip bolt is needed to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a torsion shear type hexagonal anti-skid bolt to solve the problems of poor anti-skid performance of the torsion shear type hexagonal bolt and inconvenient operation of applying screw glue in the prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a torsion shear type hexagonal anti-slip bolt, comprising a countersunk bolt, a nut and a gasket, the nut consisting of a hexagonal sleeve and an internally threaded sleeve, the outer end surface of the internally threaded sleeve is provided with a paddle, the inner end surface of the hexagonal sleeve is provided with a slide groove, the internally threaded sleeve and the hexagonal sleeve are slidably connected through the paddle and the slide groove, a capsule is provided in the slide groove, the capsule is coated with screw glue, and the side end surface of the paddle is provided with a glue guide hole.

[0006] Preferably, the inner end surface of the internal threaded sleeve is provided with a glue injection groove, which is a rectangular notch penetrating the upper and lower end surfaces of the internal threaded tower, and provides a certain flow space for the glue through the glue injection groove.

[0007] Preferably, the glue guide hole is an "L"-shaped through hole, and the glue guide hole is connected to the side end surface of the glue injection groove, and the glue is guided to the glue injection groove for injection through the glue guide hole.

[0008] Preferably, a spring is provided in the slide groove, and the internal threaded sleeve is elastically connected to the hexagonal sleeve through the spring to avoid capsule bursting due to accidental touch, ensure that the capsule breaks when the nut is tightened, and save screw glue.

[0009] Preferably, a sealing cover is provided at the bottom of the nut, and the sealing cover is interference-connected with the hexagonal sleeve.

[0010] Preferably, the capsule is made of polyethylene film, which is easy to process and shape and easy to break after being compressed.

[0011] Preferably, the surface of the countersunk bolt is provided with a threaded section and a smooth section, and the diameter of the threaded section is larger than the diameter of the smooth section, thereby enhancing the torsion shear resistance of the bolt while maintaining a low cost.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model arranges a capsule with screw glue inside the nut. After the nut is tightened, the internal thread sleeve and the hexagonal sleeve squeeze the capsule, so that the screw glue fills the space between the internal thread sleeve and the screw rod, and the glue is applied to prevent the nut from loosening.

[0014] 2. The utility model provides a glue injection groove in the internal threaded sleeve to facilitate linear application, ensure that the amount of glue applied at each thread is relatively uniform, improve the glue application quality of the screw glue, and the capsule structure facilitates the control of the glue application amount, greatly improves the application effect of the screw glue, and improves the installation efficiency of the bolt.

[0015] 3. The utility model can avoid capsule bursting due to accidental touch by elastically connecting the internal thread sleeve and the hexagonal sleeve, ensure that the capsule breaks when the nut is tightened, and save screw glue. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view of the utility model;

[0017] Figure 2 For the utility model Figure 1 Middle AA section;

[0018] Figure 3 For the utility model Figure 2 Middle BB section;

[0019] Figure 4 It is a bottom view of the utility model.

[0020] In the figure: 1 countersunk bolt, 11 threaded section, 12 smooth section, 2 nut, 21 hexagonal sleeve, 211 slide groove, 22 internal thread sleeve, 221 pick, 222 glue injection groove, 223 glue guide hole, 23 capsule, 24 spring, 25 sealing cover, 3 gasket. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example 1

[0023] See also Figures 1 to 4 The torsion shear type hexagonal anti-slip bolt shown in the figure includes a countersunk bolt 1, a nut 2 and a gasket 3. The nut 2 is composed of a hexagonal sleeve 21 and an internally threaded sleeve 22. The outer end surface of the internally threaded sleeve 22 is provided with a paddle 221, and the inner end surface of the hexagonal sleeve 21 is provided with a slide groove 211. The internally threaded sleeve 22 and the hexagonal sleeve 21 are slidably connected through the paddle 221 and the slide groove 211. A capsule 23 is provided in the slide groove 211, and the capsule 23 is coated with screw glue. The side end surface of the paddle 221 is provided with a glue guide hole 223.

[0024] The inner end surface of the internal threaded sleeve 22 is provided with a glue injection groove 222 , which is a rectangular notch penetrating the upper and lower end surfaces of the internal threaded tower, and provides a certain flow space for glue through the glue injection groove 222 .

[0025] The glue guide hole 223 is an “L”-shaped through hole, and is connected to the side end surface of the glue injection groove 222 . The glue is guided to the glue injection groove 222 for injection through the glue guide hole 223 .

[0026] A spring 24 is arranged in the slide groove 211, and the internal threaded sleeve 22 is elastically connected to the hexagonal sleeve 21 through the spring 24, so as to avoid the capsule 23 from bursting due to accidental touch, ensure that the capsule 23 is broken when the nut 2 is tightened, and save screw glue.

[0027] A sealing cover 25 is provided at the bottom of the nut 2 , and the sealing cover 25 is interference-connected with the hexagonal sleeve 21 .

[0028] The capsule 23 is made of polyethylene film, which is easy to process and shape and easy to break after being compressed.

[0029] The surface of the countersunk bolt 1 is provided with a threaded section 11 and a smooth section 12. The diameter of the threaded section 11 is larger than the diameter of the smooth section 12, so as to enhance the torsion shear resistance of the bolt while maintaining a low cost.

[0030] When the bolt is in use: after the countersunk bolt 1 passes through the fixed object and the gasket 3, the nut 2 is sleeved on the countersunk bolt 1, and the nut 2 is tightened with a hexagonal wrench. After the nut 2 is tightened, the hexagonal sleeve 21 and the internal threaded sleeve 22 squeeze the spring 24 in the slide groove 211, so that the pick 221 squeezes the capsule 23, and the capsule 23 is crushed, so that the screw glue in the capsule 23 flows from the glue guide hole 223 to the glue injection groove 222, and the threaded section 11 on the surface of the countersunk bolt 1 is injected with glue. After the thread glue solidifies, the nut 2 is fixed to the screw rod.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Torsion shear type hexagonal anti-slip bolt, characterized in that: include: A countersunk bolt (1), a nut (2) and a gasket (3), wherein the nut (2) is composed of a hexagonal sleeve (21) and an internally threaded sleeve (22), the outer end surface of the internally threaded sleeve (22) is provided with a paddle (221), the inner end surface of the hexagonal sleeve (21) is provided with a slide groove (211), the internally threaded sleeve (22) and the hexagonal sleeve (21) are slidably connected by the paddle (221) and the slide groove (211), a capsule (23) is provided in the slide groove (211), the capsule (23) is coated with screw glue, and the side end surface of the paddle (221) is provided with a glue guide hole (223).

2. The torsion shear type hexagonal anti-slip bolt according to claim 1, characterized in that: The inner end surface of the internally threaded sleeve (22) is provided with a glue injection groove (222), and the glue injection groove (222) is a rectangular notch penetrating the upper and lower end surfaces of the internally threaded tower.

3. The torsion shear type hexagonal anti-slip bolt according to claim 2, characterized in that: The glue guide hole (223) is an "L"-shaped through hole, and the glue guide hole (223) is connected to the side end surface of the glue injection groove (222).

4. The torsion shear type hexagonal anti-slip bolt according to claim 1, characterized in that: A spring (24) is arranged in the slide groove (211), and the internal thread sleeve (22) and the hexagonal sleeve (21) are elastically connected via the spring (24).

5. The torsion shear type hexagonal anti-slip bolt according to claim 1, characterized in that: A sealing cover (25) is provided at the bottom of the nut (2), and the sealing cover (25) is interference-connected with the hexagonal sleeve (21).

6. The torsion shear type hexagonal anti-slip bolt according to claim 1, characterized in that: The capsule (23) is made of polyethylene film.

7. The torsion shear type hexagonal anti-slip bolt according to claim 1, characterized in that: The surface of the countersunk bolt (1) is provided with a threaded section (11) and a smooth section (12); the diameter of the threaded section (11) is greater than the diameter of the smooth section (12).

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