Screw anchor bolt capable of being rapidly installed
By designing screw anchors with expansion, locking, positioning, and reinforcement mechanisms, the problem of rotational slippage during fixing of screw anchors was solved, achieving rapid installation and stable fixation.
Patent Information
- Application Number
- CN202520759030.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-22
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-04-22
AI Technical Summary
When fixing existing screw anchors, the screw and expansion sleeve are prone to rotational slippage during the tightening of the nut, resulting in unstable installation.
A screw anchor bolt comprising an expansion mechanism, a locking mechanism, a positioning mechanism, and a reinforcement mechanism was designed. The expansion mechanism compresses the hole wall, the positioning mechanism limits the movement, and the reinforcement mechanism enhances the friction, preventing rotational slippage and improving installation stability.
This enables rapid installation and stable fixation of the screw anchor bolts, preventing rotational slippage and improving stability during the installation process.
Smart Images

Figure CN223825392U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of screw anchor technology, and in particular to a screw anchor that can be quickly installed. Background Technology
[0002] In modern construction, mechanical installation, and infrastructure development, anchor bolts are widely used as important connection and fixing elements in fastening operations on concrete, masonry, and other substrates.
[0003] With the advancement of engineering technology and the increasing demands for construction efficiency, various improved anchor bolts have emerged on the market, aiming to simplify the installation process, increase installation speed, and enhance the fixing effect. However, when fixing screw anchor bolts, the rotation of the nut during the tightening process generates a lateral rotational force on the screw, which leads to rotational slippage between the screw and the expansion sleeve, thereby reducing the stability of the screw anchor bolt during installation. To address this, we propose a screw anchor bolt that can be installed quickly. Utility Model Content
[0004] The purpose of this invention is to provide a screw anchor bolt that can be installed quickly, so as to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a quick-installing screw anchor, comprising:
[0006] Screw components;
[0007] An expansion mechanism is provided on the outer wall of the screw component;
[0008] A locking mechanism is provided on the outer wall of the screw member;
[0009] A positioning mechanism is provided between the expansion mechanism and the screw component;
[0010] A reinforcement mechanism is disposed on the outer wall of the expansion mechanism.
[0011] Preferably, the expansion mechanism includes:
[0012] An expansion sleeve is fitted onto the outer wall of a screw member; a positioning mechanism is disposed between the screw member and the expansion sleeve; and a reinforcing mechanism is disposed on the outer wall of the expansion sleeve.
[0013] Expansion grooves are spaced apart on the outer wall of the expansion sleeve;
[0014] An extrusion block is fixedly connected to the bottom end of the screw component, and the extrusion block is arranged in a frustum shape.
[0015] Preferably, the positioning mechanism includes positioning blocks, which are fixedly connected to the outer wall of the screw component at intervals. The position of the positioning blocks corresponds to the position of the expansion groove. The outer wall of the positioning blocks is slidably connected to the inner wall of the expansion groove. The thickness of the positioning blocks is less than the depth of the expansion groove.
[0016] Preferably, the reinforcement mechanism includes:
[0017] Grooves are formed at intervals on the outer wall of the expansion sleeve;
[0018] An elastic sheet, the bottom end of which is fixedly connected to the bottom end of the inner wall of the groove, is inclined.
[0019] Preferably, the locking mechanism includes a locking nut, which is threaded onto the outer wall of the screw member.
[0020] Preferably, the outer wall of the screw is fitted with a circular washer, the circular washer is disposed at the bottom end of the locking nut, and the outer wall of the screw is fitted with an elastic washer, the elastic washer being disposed between the locking nut and the circular washer.
[0021] The technical effects and advantages of this utility model are as follows:
[0022] This utility model utilizes a positioning mechanism. After the screw anchor is inserted into the hole, the locking mechanism causes the screw to move within the expansion mechanism, which in turn expands and presses against the hole wall, thus quickly installing and fixing the screw anchor in the hole. At the same time, the positioning mechanism limits the expansion mechanism and the screw, preventing the screw from rotating or slipping, thereby improving the stability of the screw anchor installation. Attached Figure Description
[0023] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0024] Figure 2 This is a cross-sectional structural diagram of the present invention.
[0025] In the diagram: 101, screw; 201, expansion sleeve; 202, expansion groove; 203, compression block; 301, locking nut; 401, circular washer; 402, elastic washer; 501, positioning block; 601, slotted; 602, elastic sheet. Detailed Implementation
[0026] 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.
[0027] This utility model provides, for example Figures 1-2 The illustrated screw anchor bolt includes a screw member 101, an expansion mechanism, a locking mechanism, a positioning mechanism, and a reinforcing mechanism. The expansion mechanism is located on the outer wall of the screw member 101, the locking mechanism is located on the outer wall of the screw member 101, the positioning mechanism is located between the expansion mechanism and the screw member 101, and the reinforcing mechanism is located on the outer wall of the expansion mechanism. After the screw anchor bolt is inserted into the hole, the locking mechanism will cause the screw member 101 to move within the expansion mechanism, causing the expansion mechanism to expand and compress the hole wall, thereby quickly installing and fixing the screw anchor bolt in the hole. At the same time, the positioning mechanism limits the expansion mechanism and the screw member 101, preventing the screw member 101 and the expansion mechanism from rotating and slipping, thus improving the stability of the screw anchor bolt during installation.
[0028] The expansion mechanism includes an expansion sleeve 201, an expansion groove 202, and a compression block 203. The expansion sleeve 201 is fitted onto the outer wall of the screw member 101. A positioning mechanism is located between the screw member 101 and the expansion sleeve 201. A reinforcing mechanism is located on the outer wall of the expansion sleeve 201. The expansion groove 202 is spaced apart on the outer wall of the expansion sleeve 201. The compression block 203 is fixedly connected to the bottom end of the screw member 101. The compression block 203 is frustoconical. As the screw member 101 moves upward within the expansion sleeve 201, the inclined outer wall of the compression block 203 is pressed against the inner wall of the expansion sleeve 201, causing the bottom end of the expansion sleeve 201 to open and press against the hole wall, thereby fixing the screw anchor bolt in the hole. Furthermore, the expansion groove 202 allows the compression block 203 to press against the inner wall of the expansion sleeve 201, ensuring that the bottom end of the expansion sleeve 201 can open stably, thus improving the stability of the expansion mechanism.
[0029] The positioning mechanism includes positioning blocks 501, which are fixedly connected to the outer wall of the screw member 101 at intervals. The position of the positioning blocks 501 corresponds to the position of the expansion groove 202. The outer wall of the positioning blocks 501 is slidably connected to the inner wall of the expansion groove 202. The thickness of the positioning blocks 501 is less than the depth of the expansion groove 202. By locking the positioning blocks 501 in the expansion groove 202, the expansion groove 202 limits the positioning blocks 501. When the locking mechanism is working, the screw member 101 can only move longitudinally within the expansion sleeve 201, and there will be no phenomenon of the screw member 101 rotating relative to the expansion sleeve 201. This prevents the screw member 101 from rotating and slipping between the expansion sleeve 201, thereby improving the stability of the screw anchor bolt installation. Furthermore, the thickness of the positioning blocks 501 is set so that the positioning blocks 501 will not protrude from the outer wall of the expansion sleeve 201, thus ensuring that the positioning blocks 501 will not affect the insertion of the screw anchor bolt into the hole.
[0030] The reinforcement mechanism includes a slot 601 and an elastic plate 602. The slot 601 is spaced apart on the outer wall of the expansion sleeve 201. The bottom end of the elastic plate 602 is fixedly connected to the bottom end of the inner wall of the slot 601. The elastic plate 602 is inclined. When the expansion sleeve 201 is inserted into the hole, the hole wall will squeeze the inclined elastic plate 602, causing the elastic plate 602 to deform and get stuck in the slot 601. This prevents the elastic plate 602 from blocking the expansion sleeve 201 from being inserted into the hole wall. At the same time, due to the elasticity of the elastic plate 602, the elastic plate 602 will squeeze the hole wall, increasing the friction between the expansion sleeve 201 and the hole wall. This makes it less likely for the expansion sleeve 201 to rotate in the hole, improving the stability of the screw anchor installation.
[0031] The locking mechanism includes a locking nut 301, which is threaded onto the outer wall of the screw member 101. After the screw anchor is inserted into the hole, the locking nut 301 rotates on the outer wall of the screw member 101, which moves the screw member 101 out of the hole. This causes the extrusion block 203 to move and extrude pressure on the inner wall of the expansion sleeve 201, causing the bottom end of the expansion sleeve 201 to open and extrude pressure to fix the hole wall, thereby fixing the screw anchor.
[0032] In this design, a circular washer 401 is fitted onto the outer wall of the screw rod 101, and the circular washer 401 is positioned at the bottom end of the locking nut 301. An elastic washer 402 is fitted onto the outer wall of the screw rod 101, positioned between the locking nut 301 and the circular washer 401. The circular washer 401 prevents the locking nut 301 from directly contacting the mounting surface, thus reducing the risk of damage to the mounting surface when the locking nut 301 is tightened. Simultaneously, the circular washer 401 increases the contact area, making the screw anchor bolt installation more stable. Then, the elastic washer 402... The combination of these mechanisms allows the elastic washer 402 to be compressed by the locking nut 301 and the elastic washer 402 during the gradual tightening of the locking nut 301, causing the elastic washer 402 to deform. This continues until the locking nut 301 is fully tightened, at which point the bolt anchor is fixed in place. Simultaneously, the elasticity of the elastic washer 402 exerts a reverse compressive force on the locking nut 301, thereby increasing the thread engagement force between the inner wall of the locking nut 301 and the outer wall of the bolt member 101. This makes the locking nut 301 less prone to loosening on the outer wall of the bolt member 101, thus improving the stability of the bolt anchor installation.
[0033] 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 quick-installable threaded anchor bolt, characterized in that, include: Screw member (101); An expansion mechanism is disposed on the outer wall of the screw member (101); A locking mechanism is disposed on the outer wall of the screw member (101); A positioning mechanism is disposed between the expansion mechanism and the screw (101); A reinforcement mechanism is disposed on the outer wall of the expansion mechanism.
2. The quick-installable threaded anchor bolt according to claim 1, characterized in that, The expansion mechanism includes: An expansion sleeve (201) is sleeved on the outer wall of a screw (101), a positioning mechanism is disposed between the screw (101) and the expansion sleeve (201), and a reinforcing mechanism is disposed on the outer wall of the expansion sleeve (201). Expansion grooves (202) are spaced apart on the outer wall of the expansion sleeve (201); The extrusion block (203) is fixedly connected to the bottom end of the screw (101) and is arranged in the shape of a frustum.
3. The quick-installable threaded anchor bolt according to claim 2, characterized in that, The positioning mechanism includes a positioning block (501), which is fixedly connected to the outer wall of the screw (101) at intervals. The position of the positioning block (501) corresponds to the position of the expansion groove (202). The outer wall of the positioning block (501) is slidably connected to the inner wall of the expansion groove (202). The thickness of the positioning block (501) is less than the depth of the expansion groove (202).
4. A quick-installable threaded anchor bolt according to claim 2, characterized in that, The reinforcement mechanism includes: A slot (601) is provided at intervals on the outer wall of the expansion sleeve (201); An elastic sheet (602) is provided, the bottom end of which is fixedly connected to the bottom end of the inner wall of the slot (601), and the elastic sheet (602) is inclined.
5. A quick-installable threaded anchor bolt according to claim 1, characterized in that, The locking mechanism includes a locking nut (301), which is threaded onto the outer wall of the screw (101).
6. A quick-installable threaded anchor bolt according to claim 5, characterized in that, The outer wall of the screw (101) is fitted with a circular washer (401), the circular washer (401) is located at the bottom end of the locking nut (301), and the outer wall of the screw (101) is fitted with an elastic washer (402), the elastic washer (402) is located between the locking nut (301) and the circular washer (401).