High and low temperature resistant expansion bolt

Abstract

The utility model provides a high and low temperature resistant expansion bolt, and belongs to the technical field of bolts. A sleeve; the liquid storage assembly comprises a twisting cover, a liquid storage chamber, a second sealing gasket, a threaded ring and a threaded groove, the liquid storage chamber is formed in the sleeve, the threaded groove is formed in the surface of the sleeve, the threaded ring is in threaded connection to the inner wall of the threaded groove, the twisting cover is fixedly connected to the surface of the threaded ring, and the circumferential surface of the threaded ring is sleeved with the second sealing gasket; by means of the scheme, the high and low temperature resistance of the expansion bolt can be greatly improved, and therefore the problem that when a traditional expansion bolt is in a high and low temperature environment, a metal part can be softened, deformed and embrittled, and consequently loosening or falling is caused is solved.

Description

Technical Field

[0001] This utility model belongs to the field of bolt technology, specifically relating to a high and low temperature resistant expansion bolt. Background Technology

[0002] Expansion bolts are fasteners widely used in construction, installation, and fixing projects. They achieve a secure fixation effect by utilizing the principle of material expansion. An expansion bolt typically consists of three parts: a screw, an expansion tube, and a tapered plug. One end of the screw has external threads, and the other end is used to connect to the object to be fixed. The expansion tube is fitted over the screw, while the tapered plug is located inside the expansion tube. When the expansion bolt is tightened, the screw pushes the tapered plug towards the bottom of the expansion tube, forcing the outer wall of the expansion tube to expand outward and tightly fit against the hole wall, thus generating strong friction and a locking effect. This design allows expansion bolts to provide excellent fixing capabilities in hard materials such as concrete and masonry, maintaining stability even under significant tensile or shear forces. Expansion bolts come in various specifications and types, allowing for selection of appropriate products based on different application scenarios, such as fixing furniture in interior decoration, installing outdoor billboards, or fixing the foundations of industrial equipment. Furthermore, expansion bolts are characterized by easy installation, high load-bearing capacity, and wide adaptability, making them a preferred tool among many fixing solutions.

[0003] In existing technologies, traditional expansion bolts soften, deform, and become brittle in high and low temperature environments, leading to loosening or detachment. Utility Model Content

[0004] The purpose of this invention is to provide a high and low temperature resistant expansion bolt, which aims to solve the problem that the metal part of the traditional expansion bolt softens, deforms and becomes brittle in high and low temperature environments, resulting in loosening or falling off.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A high and low temperature resistant expansion bolt, comprising:

[0007] Sleeve;

[0008] A liquid storage assembly includes a twist cap, a liquid storage chamber, a second sealing gasket, a threaded ring, and a threaded groove. The liquid storage chamber is located inside a sleeve, the threaded groove is located on the surface of the sleeve, the threaded ring is threaded to the inner wall of the threaded groove, the twist cap is fixedly connected to the surface of the threaded ring, and the second sealing gasket is fitted onto the circumferential surface of the threaded ring.

[0009] An extrusion assembly is disposed within a sleeve.

[0010] In a preferred embodiment of this utility model, the extrusion assembly includes an extrusion block, a first sealing gasket, a washer, a nut, and a threaded rod. The extrusion block is disposed inside a sleeve, the threaded rod is fixedly connected to the surface of the extrusion block, the first sealing gasket is sleeved on the circumferential surface of the threaded rod, the washer is sleeved on the circumferential surface of the threaded rod, and the nut is threadedly connected to the circumferential surface of the threaded rod.

[0011] As a preferred embodiment of this utility model, the inner wall of the sleeve is provided with multiple split grooves.

[0012] As a preferred embodiment of this utility model, the body of the expansion bolt is made of stainless steel and the surface is plated with zinc.

[0013] As a preferred embodiment of this invention, the liquid storage chamber is filled with vacuum grease.

[0014] As a preferred embodiment of this utility model, the first sealing gasket and the threaded ring are made of rubber.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. In this solution, firstly, the screw cap is twisted to disengage the threaded ring from the thread groove. Then, vacuum grease is injected into the reservoir through the thread groove. Due to the excellent chemical inertness and resistance to high and low temperatures of the vacuum grease, it can effectively protect the bolt. After drilling a hole at the location where the expansion bolt needs to be installed, the bolt is placed in the hole and the nut is twisted to cause the threaded rod to move outward. At this time, the bottom of the extrusion block will squeeze the sleeve, causing it to crack and generate huge friction to achieve fixation. During this process, the vacuum grease flows out from the reservoir, further protecting the bolt. Finally, the first sealing gasket will seal the opening to prevent the vacuum grease from flowing out. This design ensures the stability and corrosion resistance of the bolt under extreme temperature conditions.

[0017] 2. In this solution, the main body of the expansion bolt is made of stainless steel and the surface is plated with zinc. The zinc plating can prevent metal embrittlement in low temperature environment and reduce oxidation and corrosion in high temperature environment, thus extending the service life of the metal structure and further enhancing the bolt's resistance to high and low temperatures. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a first-view perspective perspective view of the present invention;

[0020] Figure 2 This is an exploded view of the present invention;

[0021] Figure 3 This utility model Figure 2 A magnified view of a portion of point A in the middle.

[0022] In the diagram: 1. Sleeve; 2. Twist cap; 3. Extrusion block; 4. First sealing gasket; 5. Gasket; 6. Nut; 7. Threaded rod; 8. Split groove; 9. Liquid storage chamber; 10. Second sealing gasket; 11. Threaded ring; 12. Threaded groove. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example

[0025] Please see Figures 1-3 The present invention provides the following technical solution:

[0026] A high and low temperature resistant expansion bolt, comprising:

[0027] Sleeve 1;

[0028] The liquid storage assembly includes a twist cap 2, a liquid storage chamber 9, a second sealing gasket 10, a threaded ring 11, and a threaded groove 12. The liquid storage chamber 9 is opened inside the sleeve 1, the threaded groove 12 is opened on the surface of the sleeve 1, the threaded ring 11 is threaded to the inner wall of the threaded groove 12, the twist cap 2 is fixedly connected to the surface of the threaded ring 11, and the second sealing gasket 10 is sleeved on the circumferential surface of the threaded ring 11.

[0029] The extrusion assembly is located inside the sleeve 1.

[0030] In a specific embodiment of this utility model, firstly, the cap 2 is twisted to disengage the threaded ring 11 from the threaded groove 12. Then, vacuum grease is injected into the liquid storage chamber 9 through the threaded groove 12. Because the vacuum grease has excellent chemical inertness, it can protect the bolt in high and low temperature environments. When the bolt is driven into the wall, the sleeve 1 will burst open, and the vacuum grease will flow out to protect the expansion bolt.

[0031] Please refer to the details. Figures 1-3The extrusion assembly includes an extrusion block 3, a first sealing gasket 4, a gasket 5, a nut 6, and a threaded rod 7. The extrusion block 3 is disposed inside the sleeve 1. The threaded rod 7 is fixedly connected to the surface of the extrusion block 3. The first sealing gasket 4 is sleeved on the circumferential surface of the threaded rod 7. The gasket 5 is sleeved on the circumferential surface of the threaded rod 7. The nut 6 is threadedly connected to the circumferential surface of the threaded rod 7.

[0032] In this embodiment: First, a hole is drilled where the expansion bolt needs to be installed. Then, the bolt is put into the hole and the nut 6 is turned. This will cause the threaded rod 7 to move outward. At this time, the bottom of the extrusion block 3 will extrude the sleeve 1 and cause the sleeve 1 to crack, generating huge friction force and forming a fixation. The first sealing gasket 4 will block the hole.

[0033] Please refer to the details. Figures 1-3 The inner wall of the sleeve 1 is provided with multiple splitting grooves 8.

[0034] In this embodiment, four splitting grooves 8 are formed inside the sleeve 1 to facilitate the splitting of the sleeve 1.

[0035] Please refer to the details. Figures 1-3 The main body of this expansion bolt is made of stainless steel and has a zinc plating on the surface.

[0036] In this embodiment, the zinc plating layer can prevent metal embrittlement at low temperatures and reduce oxidation and corrosion at high temperatures, extending the service life of the metal structure and further enhancing the bolt's resistance to high and low temperatures.

[0037] Please refer to the details. Figures 1-3 The liquid storage chamber 9 will be filled with vacuum grease.

[0038] In this embodiment: because vacuum grease remains stable at both extremely low and extremely high temperatures, it provides excellent protection and sealing performance, does not harden, does not soften, and is almost non-volatile, ensuring reliable operation of bolts under extreme conditions, while also possessing chemical inertness and long service life.

[0039] Please refer to the details. Figures 1-3 The first sealing gasket 4 and the threaded ring 11 are made of rubber.

[0040] In this embodiment, the first sealing gasket 4 and the threaded ring 11 are made of rubber, which can achieve a better sealing effect and prevent vacuum grease from flowing out.

[0041] The working principle and usage process of this utility model are as follows: First, twist the cap 2 to disengage the threaded ring 11 from the threaded groove 12. Then, fill the storage chamber 9 with vacuum grease through the threaded groove 12. Because the vacuum grease has excellent chemical inertness, it can protect the bolt in high and low temperature environments. Next, drill a hole where the expansion bolt needs to be installed, and then put the bolt into the hole. Then, twist the nut 6, which will cause the threaded rod 7 to move outward. At this time, the bottom of the extrusion block 3 will extrude the sleeve 1 and cause the sleeve 1 to crack, generating huge friction and forming a fixation. At this time, the vacuum grease will flow from the storage chamber 9. The bolt is protected by a first sealing gasket 4 that blocks the opening to prevent vacuum grease from leaking out. The main body of the expansion bolt is made of stainless steel and has a zinc plating. The zinc plating prevents metal embrittlement at low temperatures and reduces oxidation and corrosion at high temperatures, extending the service life of the metal structure and further enhancing the bolt's resistance to high and low temperatures. This solution greatly increases the high and low temperature resistance of the expansion bolt, thus solving the problem that traditional expansion bolts soften, deform, and become brittle in high and low temperature environments, leading to loosening or falling off.

[0042] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high and low temperature resistant expansion bolt, characterized in that: include: Sleeve (1); The liquid storage assembly includes a twist cap (2), a liquid storage chamber (9), a second sealing gasket (10), a threaded ring (11), and a threaded groove (12). The liquid storage chamber (9) is opened inside the sleeve (1), the threaded groove (12) is opened on the surface of the sleeve (1), the threaded ring (11) is threaded to the inner wall of the threaded groove (12), the twist cap (2) is fixedly connected to the surface of the threaded ring (11), and the second sealing gasket (10) is sleeved on the circumferential surface of the threaded ring (11). An extrusion assembly is disposed within a sleeve (1).

2. The high and low temperature resistant expansion bolt according to claim 1, characterized in that: The extrusion assembly includes an extrusion block (3), a first sealing gasket (4), a gasket (5), a nut (6), and a threaded rod (7). The extrusion block (3) is disposed inside the sleeve (1). The threaded rod (7) is fixedly connected to the surface of the extrusion block (3). The first sealing gasket (4) is sleeved on the circumferential surface of the threaded rod (7). The gasket (5) is sleeved on the circumferential surface of the threaded rod (7). The nut (6) is threadedly connected to the circumferential surface of the threaded rod (7).

3. The high and low temperature resistant expansion bolt according to claim 2, characterized in that: The inner wall of the sleeve (1) is provided with multiple split grooves (8).

4. The high and low temperature resistant expansion bolt according to claim 3, characterized in that: The body of this expansion bolt is made of stainless steel and has a zinc plating.

5. A high and low temperature resistant expansion bolt according to claim 4, characterized in that: The liquid storage chamber (9) will be filled with vacuum grease.

6. The high and low temperature resistant expansion bolt according to claim 5, characterized in that: The first sealing gasket (4) and the threaded ring (11) are made of rubber.

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