A bolt for use in concrete

Abstract

The utility model relates to the technical field of bolt in concrete, disclose a kind of bolt in concrete, including, bolt main body, the upper fixed arrangement of bolt main body has screw head, the lower arrangement of screw head has baffle, the lower arrangement of baffle has color gasket, the one end of color gasket is rotated in bolt main body near screw head, for warning not to spin, the utility model discloses bolt introduces high-low tooth combination structure in thread end part, and low tooth structure makes the bottom diameter of this section thread and outer diameter slightly reduce, can effectively prevent the local torque dramatic increase caused by multiple tooth engagement, avoid bolt end material damage or breakage, solve the problem that traditional concrete bolt is easily broken due to torque sudden increase when being screwed into end, improve the use reliability and durability of bolt, and low tooth also plays the role of " fulcrum " or interference site on structure, can effectively improve the anti-seismic property and anti-loose ability of bolt.

Description

Technical Field

[0001] This utility model relates to the field of bolt technology for use in concrete, specifically a bolt for use in concrete. Background Technology

[0002] In the field of construction and engineering installation, high-strength bolts are key components for fixing heavy facilities, and their installation efficiency and safety in concrete directly affect the quality of the project. Traditional bolt thread designs have many drawbacks: high torque and slow insertion speed during screwing, difficulty in removing chips leading to a surge in resistance, not only slows down construction progress but also easily causes bolt breakage; lack of guiding structure makes it difficult to ensure perpendicularity during insertion, affecting installation stability; and unreasonable thread structure leads to stripping, breakage, and loosening during use, threatening the structural connection strength.

[0003] Although most existing concrete bolts employ through-type high-low thread to reduce torque and increase anchoring force, the problem of end fracture is prominent for long thread specifications (such as 6×55mm)—the sudden increase in torque at the end can easily exceed the material's bearing capacity. Furthermore, in traditional designs, high-low threads often cover the entire thread segment or are only located at the front end to enhance cutting and penetration capabilities. Structures that use high-low threads locally at the thread end to adjust torque and achieve anti-loosening and vibration reduction are still relatively rare, making it difficult to balance the reasonable stress distribution at the end of long bolts with overall reliability. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a bolt for use in concrete.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a bolt for use in concrete, comprising a bolt body, a screw head fixedly arranged above the bolt body, a baffle arranged below the screw head, and a colored washer arranged below the baffle. The colored washer rotates through the bolt body at one end near the screw head to warn against over-tightening.

[0006] As a further description of the above technical solution:

[0007] The bolt body has a chamfer at the bottom, and the chamfer is at an angle for insertion into the concrete. The bolt body has serrations on the side near the chamfer. Several sets of serrations are fixedly arranged in a tooth-like shape on the periphery of the bolt body near end 14 for cutting the concrete.

[0008] As a further description of the above technical solution:

[0009] The outer periphery of the bolt body is fixed with multiple threads, and several sets of V-shaped notches are fixed above the threads to reduce torque.

[0010] As a further description of the above technical solution:

[0011] The bolt body has a fixed arrangement of high and low thread sets near the baffle to prevent the bolt body from breaking.

[0012] As a further description of the above technical solution:

[0013] The high and low thread set includes: a high thread, which is fixedly arranged on the outer periphery of the bolt body near the baffle; and a low thread, which is arranged at both ends of the high thread and is fixedly arranged on the outer periphery of the bolt body. Several sets of low threads can be provided to prevent loosening.

[0014] This utility model has the following beneficial effects:

[0015] 1. The bolt of this utility model introduces a high-low tooth combination structure at the end of the thread, and the low tooth structure slightly reduces the root diameter and outer diameter of the thread section, which can effectively prevent the local torque surge caused by multi-tooth meshing, avoid the material damage or breakage at the bolt end, solve the problem that traditional concrete bolts are prone to breakage due to sudden torque increase when screwed in, and improve the reliability and durability of the bolt.

[0016] 2. The newly added low-profile thread at the bolt end acts as a "fulcrum" or interference point in the structure, effectively improving the bolt's seismic resistance. Simultaneously, this combination of high and low threads prevents bolt loosening. Compared to traditional designs, this bolt performs better in terms of seismic resistance and loosening prevention, better adapting to the usage requirements of concrete structures in different environments and ensuring the stability of the connection. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a colored washer for bolts in concrete proposed by this utility model;

[0018] Figure 2 This is an overall schematic diagram of a bolt for use in concrete proposed by this utility model;

[0019] Figure 3 This is a schematic diagram of a chamfer for a bolt used in concrete, as proposed in this utility model.

[0020] Figure 4 This invention provides a diagram illustrating the working state of a colored gasket for bolts in concrete, under compression.

[0021] Figure 5 This is a schematic diagram of a high and low thread group of a bolt for use in concrete, as proposed in this utility model.

[0022] Legend: 1. Bolt body; 2. Screw head; 3. Baffle; 31. Colored washer; 11. Serration; 12. Thread; 13. High and low thread combination; 131. High thread; 132. Low thread; 14. Chamfer; 15. V-notch. 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 1:

[0025] like Figures 1 to 5 As shown, this embodiment provides a bolt for use in concrete, comprising: a bolt body 1, a screw head 2 fixedly arranged above the bolt body 1, a baffle 3 arranged below the screw head 2, and a colored washer 31 arranged below the baffle 3. The colored washer 31 is rotatably inserted through the bolt body 1 near the screw head 2 to warn against over-tightening.

[0026] Understandable, Figure 1 The subject matter is shown only schematically, and the actual shape, size, location, and construction of these components are not subject to change. Figure 1 The limitations mean that the topics can also include those that are more... Figure 1 More or fewer parts.

[0027] In this embodiment, the colored gasket 31 uses color to warn the user to avoid turning the bolt with excessive force, visually indicating the operating force and reducing the risk of the bolt being damaged due to excessive force;

[0028] The colored pad 31 can be made of engineering plastic material with certain elasticity and wear resistance, such as polytetrafluoroethylene or nylon. Its own durability can also ensure that it is not easily damaged during long-term use and maintain a stable warning function.

[0029] Specifically, a chamfer 14 is arranged at the bottom of the bolt body 1, and the chamfer 14 is obliquely shaped for insertion into the concrete. A serration 11 is provided on the side of the bolt body 1 near the chamfer 14. The serration 11 is provided in several groups and is fixedly arranged in a tooth shape on the periphery of the bolt body 1 near the end of 14 for cutting the concrete.

[0030] In this embodiment, the chamfer 14 guides the bolt into the concrete, and the serration 11 cuts the concrete when screwed in, reducing insertion resistance and facilitating the bolt to quickly penetrate the concrete, thereby improving installation efficiency.

[0031] Specifically, the outer periphery of the bolt body 1 is fixed with multiple threads 12, and several sets of V-shaped notches 15 are fixed above the threads 12 to reduce torque.

[0032] As a preferred implementation method, the V-shaped notch 15 reduces the contact area between the thread 12 and the concrete, reduces the torque during screwing, reduces the operating intensity, and avoids bolt deformation due to excessive torque.

[0033] Specifically, a high and low thread group 13 is fixedly arranged at one end of the bolt body 1 near the baffle 3 to prevent the bolt body 1 from breaking.

[0034] It should be noted that the high and low thread group 13 disperses the stress through the difference in thread structure, reduces local stress concentration, enhances the bolt's fracture resistance, and improves structural stability.

[0035] The high and low thread groups 13 are arranged at approximately 10% to 25% of the total bolt body 1 length.

[0036] Specifically, the high and low thread group 13 includes: a high thread 131, which is fixedly arranged on the outer periphery of one end of the bolt body 1 near the baffle 3; and a low thread 132, which is arranged at both ends of the high thread 131 and is fixedly arranged on the outer periphery of the bolt body 1. Several groups of low threads 132 can be provided to prevent vibration and loosening.

[0037] In this embodiment, the high-thread 131 ensures connection strength, while the low-thread 132 increases friction through structural interference. The double threaded fit prevents bolt loosening and improves seismic performance.

[0038] Several layers of low-tooth thread 132 can be set according to the actual situation to form a high-low tooth combination structure.

[0039] In this embodiment, all of the above components are applicable to concrete bolts with a size of 6×50mm and above.

[0040] When in use, the bolt body 1 is guided into the concrete by the lower chamfer 14, and the serrations 11 cut the concrete to reduce the insertion resistance and facilitate rapid penetration.

[0041] The V-shaped notch 15 on the thread 12 reduces the contact area with the concrete and lowers the screwing torque;

[0042] In the high and low thread group 13, the high thread 131 ensures the connection strength, while the low thread 132 prevents loosening through structural interference and avoids breakage caused by a sudden increase in end torque;

[0043] The colored gasket 31 serves as a warning to prevent excessive force, and the baffle 3 provides a limit to ensure that the bolts are installed securely and reliably.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present 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 the present utility model should be included within the protection scope of the present utility model.

Claims

1. A bolt for use in concrete, characterized in that: include: A bolt body (1) is provided, with a screw head (2) fixedly arranged above the bolt body (1), a baffle (3) arranged below the screw head (2), and a colored washer (31) arranged below the baffle (3). The colored washer (31) rotates through the bolt body (1) at the end near the screw head (2) to warn against over-tightening.

2. A bolt for use in concrete according to claim 1, characterized in that: A chamfer (14) is arranged below the bolt body (1), and the chamfer (14) is obliquely shaped for insertion into the concrete. A serration (11) is provided on the side of the bolt body (1) near the chamfer (14). The serration (11) is provided in several groups and is fixedly arranged in a tooth shape on the periphery of the bolt body (1) near the end of chamfer (14) for cutting the concrete.

3. A bolt for use in concrete according to claim 2, characterized in that: The outer periphery of the bolt body (1) is fixed with multiple threads (12), and several sets of V-shaped notches (15) are fixed above the threads (12) to reduce torque.

4. A bolt for use in concrete according to claim 3, characterized in that: The bolt body (1) is fixedly provided with a high and low thread group (13) at one end near the baffle (3) to prevent the bolt body (1) from breaking.

5. A bolt for use in concrete according to claim 4, characterized in that: The high and low thread assembly (13) includes: High-tooth thread (131) is fixedly arranged on the periphery of one end of the bolt body (1) near the baffle (3); Low-pitch threads (132) are arranged at both ends of high-pitch threads (131), and the low-pitch threads (132) are fixedly arranged on the periphery of the bolt body (1). Several sets of low-pitch threads (132) can be provided to prevent vibration and loosening.

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