Anti-loosening bolt assembly

Abstract

The utility model relates to the technical field of fasteners, and discloses an anti-loosening bolt assembly which comprises a threaded sleeve, an expansion piece is connected to the outer wall of one end of the threaded sleeve, an open groove is formed in the connecting position of the threaded sleeve and the expansion piece, and a threaded rod with an external thread at one end penetrates through the middle of the threaded sleeve. A conical ejector block is fixed to the outer wall of the end, close to the expansion piece, of the screw rod, the end, close to the threaded sleeve, of the screw rod is sleeved with a metal gasket, and the outer wall of the end, close to the gasket, of the screw rod is sleeved with a nut. The penetrating hole is formed in the outer wall of the middle of the screw rod, and a glass sleeve made of quartz is inserted into one end of the penetrating hole. The anti-loosening bolt assembly is provided with the screw rod, when the screw rod and the screw sleeve are arranged in a preset hole position, the screw sleeve and the screw rod of the installed bolt assembly are stably arranged at the installation point position through expanding and enlarging of the expanding piece by the ejector block and chemical anchoring of the cotter pin and the resin curing agent, the anti-loosening bolt assembly has high tensile and anti-loosening capacity, and the anchoring effect is better.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, in particular to an anti-loosening bolt assembly. Background Art

[0002] Fasteners are a type of mechanical parts used to firmly connect two or more parts (or components) into a whole, and such parts are widely used in various industries. Specific types of fasteners include, but are not limited to, bolts, nuts, assemblies, etc. These parts play a crucial role in mechanical manufacturing, being able to firmly connect different components together to ensure the normal operation of mechanical equipment.

[0003] After searching, there is an anti-loosening bolt assembly with a publication number of CN215409715U, which consists of a bolt and a nut. The bolt includes a stud and a bolt head, and is used to solve the problem that the nut is extremely easy to reverse and slowly fall off the bolt in a vibrating environment. The bolt assembly in this utility model is fixed through a set of self-friction tightening structures, and the stabilizing structure is relatively single, and it is easy to cause the bolt to loosen due to structural failure. Therefore, we propose an anti-loosening bolt assembly. Summary of the Invention

[0004] The purpose of the utility model is to provide an anti-loosening bolt assembly to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solution: An anti-loosening bolt assembly, comprising:

[0006] A bushing, one end outer wall of the bushing is connected with an expansion piece, a slot is opened at the connection of the bushing and the expansion piece, a screw rod with an external thread at one end is passed through the middle of the bushing, a conical top block is fixed on the outer wall of the screw rod near the expansion piece, a gasket made of metal is sleeved on the screw rod near the bushing, and a nut is sleeved on the outer wall of the screw rod near the gasket;

[0007] A perforation is opened on the outer wall of the middle of the screw rod, one end of the perforation is inserted with a glass sleeve made of quartz, the inside of the glass sleeve is filled with resin curing agent, and the other end of the perforation is inserted with a nail.

[0008] Further, a resistance increasing member is arranged inside the slot, and the resistance increasing members are symmetrically arranged about the central axis position of the bushing.

[0009] Further, the expansion piece and the slot are symmetrically arranged about the central axis position of the bushing, the screw rod and the bushing form a threaded connection, the top block forms a telescopic connection with the bushing through the screw rod, and at the same time, the expansion piece forms a rotational connection with the bushing through the top block.

[0010] Further, the gasket is snap-connected between the nut and the screw sleeve and the screw, and the nail and the glass sleeve are telescopically connected to the screw through the perforation.

[0011] Further, a wing plate is arranged at the lowermost end of the resistance increasing member, an insertion plate is fixed in the middle of the resistance increasing member, and sawteeth are arranged on the outer wall of the insertion plate.

[0012] Further, the wing plates are symmetrically arranged about the central axis position of the insertion plate, and the sawteeth are evenly distributed at equal intervals along the outer wall of the upper end of the insertion plate.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] The anti-loosening bolt assembly is provided with a screw. When the screw and the screw sleeve are inserted into a preset hole position, through the expansion of the expansion piece by the top block and the chemical anchoring of the nail and the resin curing agent, the screw sleeve and the screw of the installed bolt assembly are firmly fixed at the installation position, having strong tensile anti-loosening ability and better anchoring effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a front view structural schematic diagram of the combined working state of the present utility model;

[0016] Figure 2 is a structural schematic diagram of a partially disassembled state of the screw sleeve and the screw of the present utility model;

[0017] Figure 3 is a structural schematic diagram of the nail and the glass sleeve part of the present utility model;

[0018] Figure 4 is an enlarged front view structural schematic diagram of the resistance increasing member part of the present utility model.

[0019] In the figure: 1, screw sleeve; 2, expansion piece; 3, slot; 4, screw; 5, top block; 6, gasket; 7, nut; 8, perforation; 9, glass sleeve; 10, resin curing agent; 11, nail; 12, resistance increasing member; 13, wing plate; 14, insertion plate; 15, sawtooth. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0021] The present utility model provides an anti-loosening bolt assembly through improvement. Please refer to Figures 1 - 3, including: a bushing 1, an expansion piece 2 is connected to the outer wall of one end of the bushing 1, a slotted groove 3 is opened at the connection between the bushing 1 and the expansion piece 2, the expansion piece 2 and the slotted groove 3 are symmetrically arranged with respect to the central axis position of the bushing 1, a screw rod 4 with an external thread at one end is inserted through the middle of the bushing 1, and a threaded connection is formed between the screw rod 4 and the bushing 1. The provided screw rod 4 is fixed inside the bushing 1 by threads. When the bushing 1 is installed into a preset hole position, through the expansion of the expansion piece 2 by the top block 5 and the chemical anchoring of the through pin 11 and the resin curing agent 10, the bushing 1 and the screw rod 4 of the installed bolt assembly are firmly fixed at the installation point, having a strong tensile and anti-loosening ability and better anchoring effect; a conical top block 5 is fixed to the outer wall of one end of the screw rod 4 close to the expansion piece 2, and the top block 5 forms a telescopic connection between the screw rod 4 and the bushing 1, and the expansion piece 2 forms a rotational connection with the bushing 1 through the top block 5. The top block 5 is used to push open the expansion piece 2 at one end of the bushing 1 by the screwed-out screw rod 4, so that the expansion piece 2 is in an expanded state in the installed hole position, facilitating the fixation of the bolt assembly; a gasket 6 made of metal is sleeved on one end of the screw rod 4 close to the bushing 1, a nut 7 is sleeved on the outer wall of the screw rod 4 close to the gasket 6, and the gasket 6 forms a clamping connection between the nut 7, the bushing 1 and the screw rod 4. A through hole 8 is opened on the outer wall of the middle of the screw rod 4, a glass sleeve 9 made of quartz is inserted into one end of the through hole 8, the inside of the glass sleeve 9 is filled with a resin curing agent 10, a through pin 11 is inserted into the other end of the through hole 8, and the through pin 11 and the glass sleeve 9 form a telescopic connection through the through hole 8 and the screw rod 4. The through pin 11 is used to break the glass sleeve 9, so that the resin curing agent 10 filled in the glass sleeve 9 is mixed with the broken quartz particles, and the through pin 11 for assisting in fixing the screw rod 4 is anchored in the bolt installation hole position by chemical anchoring method.

[0022] Please refer to Figure 2 and Figure 4 , a bolt assembly with anti-loosening function, including: a resistance increasing member 12 is arranged inside the slotted groove 3, and the resistance increasing member 12 is symmetrically arranged with respect to the central axis position of the bushing 1. After the provided resistance increasing member 12 is pushed open by the top block 5 and embedded into the slotted groove 3, through the insertion plate 14 and the sawteeth 15 opened on the outer wall of the insertion plate 14, it bites with the building materials at the installation point of the bolt assembly, increasing the frictional resistance between the bushing 1 and the building materials after installation through the resistance increasing member 12, and preventing the bolt assembly from coming out; a wing plate 13 is arranged at the lowermost end of the resistance increasing member 12, an insertion plate 14 is fixed in the middle of the resistance increasing member 12, the wing plate 13 is symmetrically arranged with respect to the central axis position of the insertion plate 14, and the wing plate 13 and the insertion plate 14 are used to match with the slotted groove 3 inside the expansion piece 2; sawteeth 15 are opened on the outer wall of the insertion plate 14, and the sawteeth 15 are evenly distributed at equal intervals along the upper outer wall of the insertion plate 14. The sawteeth 15 are used to increase the frictional force between the contact surfaces of the bolt assembly and the installation point.

[0023] Working principle: For this type of anti-loosening bolt assembly, first, the staff drills holes at the installation site of the bolt assembly to facilitate inserting the bolt assembly into the installation point. The inserted bolt assembly is in a relaxed state. The resistance increasing member 12 for auxiliary fixation is arranged inside the expansion piece 2 and the slot 3. Then, the construction worker rotates the nut 7 and the screw rod 4, so that the screw rod 4 drives the top block 5 to move towards the expansion piece 2 on the bushing 1 in the hole. The top block 5 pushes open the expansion piece 2, making the expansion piece 2 rotate to an open state, so that the expansion piece 2 is in a friction fastening form with the inner wall of the hole through the slot 3, thereby achieving the purpose of preventing the tightened screw rod 4 from loosening and falling off the bushing 1. Moreover, the resistance increasing member 12 installed inside the slot 3 further enhances the anti-loosening effect of the bolt assembly through the limitation of the wing plate 13 inside the expansion piece 2 and the resistance increasing effect of the insertion plate 14 and the saw teeth 15. Subsequently, the staff inserts the glass sleeve 9 into the through hole 8, and then inserts the through pin 11 to pierce the glass sleeve 9, so that the resin curing agent 10 filled inside the glass sleeve 9 is mixed with the crushed quartz fragments. After curing, the through pin 11 is fixed, so that the screw rod 4 achieves the effect of chemical anchoring through the inserted through pin 11. Finally, the construction worker fixes other connected structures or devices through the gasket 6 and the nut 7.

[0024] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A loosening-preventing bolt assembly, characterized in that, Including: A screw sleeve (1), one end outer wall of the screw sleeve (1) is connected with an expansion piece (2), a slotted opening (3) is arranged at the connection of the screw sleeve (1) and the expansion piece (2), a screw rod (4) with an external thread at one end is penetrated through the middle of the screw sleeve (1), a conical top block (5) is fixed on the outer wall of the screw rod (4) near the expansion piece (2), a gasket (6) made of metal is sleeved on the screw rod (4) near one end of the screw sleeve (1), and a nut (7) is sleeved on the outer wall of the screw rod (4) near the gasket (6); A through hole (8) is arranged on the outer wall of the middle of the screw rod (4), a glass sleeve (9) made of quartz is inserted at one end of the through hole (8), a resin curing agent (10) is filled in the glass sleeve (9), and a through pin (11) is inserted at the other end of the through hole (8).

2. The anti-loosening bolt assembly according to claim 1, wherein: A resistance increasing member (12) is arranged inside the slotted opening (3), and the resistance increasing member (12) is symmetrically arranged about the central axis position of the screw sleeve (1).

3. The anti-loosening bolt assembly according to claim 1, characterized in that: The expansion piece (2) and the slotted opening (3) are symmetrically arranged about the central axis position of the screw sleeve (1), the screw rod (4) and the screw sleeve (1) form a threaded connection, the top block (5) forms a telescopic connection with the screw sleeve (1) through the screw rod (4), and at the same time the expansion piece (2) forms a rotational connection with the screw sleeve (1) through the top block (5).

4. The anti-loosening bolt assembly according to claim 1, characterized in that: The gasket (6) forms a clamping connection with the screw rod (4) through the nut (7) and the screw sleeve (1), and the through pin (11) and the glass sleeve (9) form a telescopic connection with the screw rod (4) through the through hole (8).

5. The anti-loosening bolt assembly according to claim 2, characterized in that: A wing plate (13) is arranged at the lowermost end of the resistance increasing member (12), a plug plate (14) is fixed in the middle of the resistance increasing member (12), and saw teeth (15) are arranged on the outer wall of the plug plate (14).

6. The anti-loosening bolt assembly according to claim 5, characterized in that: The wing plates (13) are symmetrically arranged about the central axis position of the plug plate (14), and the saw teeth (15) are evenly distributed at equal intervals along the upper end outer wall of the plug plate (14).

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