Chemical anchor device with adjustable length
By designing an adjustable-length chemical anchor device, which employs a combination structure of threaded anchors, sliding shafts, and limiting rods, the problem of length adaptation in existing equipment is solved, enabling flexible installation and stable fixing of anchors on different substrates and improving efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANDAN YONGNIAN DISTRICT NUOFENG FASTENER CO LTD
- Filing Date
- 2025-10-15
- Publication Date
- 2026-08-04
AI Technical Summary
Existing chemical anchor bolt equipment is only compatible with anchor bolts of specific lengths and specifications, making it difficult to flexibly address the conditions of different substrates and installation requirements of various projects.
An adjustable-length chemical anchor device was designed, which achieves flexible adjustment and stable fixation of the anchor length through a combination structure of threaded anchor, sliding shaft, limiting rod and spring.
It enables flexible installation of anchor bolts on substrates of different thicknesses and depths, improving efficiency and stability, and adapting to diverse engineering needs.
Smart Images

Figure CN224592512U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of anchor bolt adjustment, in particular to a chemical anchor bolt device with adjustable length. Background Art
[0002] The chemical anchor bolt device is not a single device. Its core function is to fix the chemical anchor bolt in substrates such as concrete, stone, and steel through steps such as drilling, cleaning the hole, injecting glue, and implanting the anchor bolt. With the continuous development of the construction industry, the demand for reliable and efficient anchoring technology has been continuously increasing. Early chemical anchor bolts used vinyl resin as the main raw material, and their application scope has gradually expanded from the initial structural reinforcement to many infrastructure construction fields such as buildings, bridges, and highways. The chemical anchor bolt device has been continuously iterated and upgraded to meet diverse engineering needs, developing from a single product form to a diversified and functional direction, and becoming an indispensable key technical support in the modern construction and engineering fields.
[0003] The chemical anchor bolt device realizes the reliable fixation of the anchor bolt and the substrate through the coordinated operation of multiple tools. A drilling device is used to drill holes in substrates such as concrete and steel that meet the specifications of the anchor bolt. A hole cleaning device is used to remove dust and debris in the hole. The resin adhesive supporting the chemical anchor bolt is placed in the hole, and then the anchor bolt is implanted to fully mix the adhesive. After the adhesive is cured according to the specified time, a high-strength bonding layer is formed between the anchor bolt and the hole wall, and finally the anchor bolt and the substrate are firmly combined to realize the connection and fixation of the structural member.
[0004] In the prior art, during the use of some chemical anchor bolt devices, due to the significant differences in the conditions of substrates and installation requirements in different projects, the length requirements for chemical anchor bolts are also different. Some chemical anchor bolt devices are only suitable for anchor bolts with specific length specifications, resulting in difficulty in flexibly meeting diverse requirements. Therefore, a chemical anchor bolt device with adjustable length is proposed to solve the above problems. Content of the Utility Model
[0005] In order to make up for the above deficiencies, the utility model provides a chemical anchor bolt device with adjustable length, aiming to improve the problem that in the prior art, some chemical anchor bolt devices are difficult to flexibly adjust the length because they are only suitable for anchor bolts with specific length specifications and cannot adapt to the conditions of substrates and installation requirements in different projects.
[0006] In order to achieve the above object, the utility model adopts the following technical scheme:
[0007] An adjustable-length chemical anchor device includes a support plate, a chemical agent slidably connected inside the support plate, a threaded anchor inside the support plate, an adjustment mechanism inside the threaded anchor, a rotating plate threadedly connected to the outside of the threaded anchor, and the adjustment mechanism including a sliding shaft slidably connected to the outside of the threaded anchor, a threaded post fixedly connected to the top of the sliding shaft, a fixing block fixedly connected to the bottom of the sliding shaft, and a reset component slidably connected inside the fixing block.
[0008] As a further description of the above technical solution:
[0009] The reset assembly includes two limiting rods, the two limiting rods are slidably connected to the outside of the sliding shaft, and a support rod is slidably connected to the inside of the two limiting rods. A spring is sleeved on the outside of the support rod.
[0010] As a further description of the above technical solution:
[0011] The two limiting rods are slidably connected to the inside of the left and right ends of the fixed block, respectively, and the left and right ends of the spring are fixedly connected to the adjacent ends of the two limiting rods.
[0012] As a further description of the above technical solution:
[0013] The threaded anchor has multiple symmetrical limiting grooves at both ends, and the bottom end of the threaded anchor is conical.
[0014] This utility model has the following beneficial effects:
[0015] In this invention, the height of the threaded anchor is adjusted by manually pulling the threaded column to drive the sliding shaft to slide inside the threaded anchor. This allows the anchor to flexibly adapt to installation scenarios with substrates of different thicknesses and depths. The limiting rod slides into the limiting groove inside the threaded anchor, and a spring drives the two limiting rods to fit tightly into the limiting groove, forming a stable limiting structure. This prevents the sliding shaft from shifting due to vibration, external forces, or other factors during subsequent installation or use, thus meeting the installation requirements of the anchor for substrates of different lengths and improving the flexible use efficiency of the anchor. Attached Figure Description
[0016] Figure 1 This is a three-dimensional schematic diagram of the adjustable-length chemical anchor device proposed in this utility model;
[0017] Figure 2 This is a schematic diagram of the fixing block of the adjustable-length chemical anchor bolt device proposed in this utility model;
[0018] Figure 3This is a schematic diagram of the sliding shaft of the adjustable-length chemical anchor device proposed in this utility model;
[0019] Figure 4 for Figure 3 Enlarged view of point A in the middle.
[0020] Legend:
[0021] 1. Support plate; 2. Chemical reagents; 3. Threaded anchor bolts;
[0022] 4. Adjustment mechanism; 41. Threaded column; 42. Sliding shaft; 43. Fixed block;
[0023] 44. Reset assembly; 441. Limiting rod; 442. Support rod; 443. Spring;
[0024] 5. Rotating plate. Detailed Implementation
[0025] 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.
[0026] Example 1:
[0027] Adjustable length chemical anchor device, refer to Figures 1 to 3 The system includes a support plate 1, which serves as the load-bearing component of the equipment and possesses resistance to pressure and deformation. A chemical agent 2, encapsulated in a specially designed glass container, is slidably connected inside the support plate 1. This chemical agent reacts with the substrate material after the anchor bolt is installed, enhancing the bond strength between the anchor bolt and the substrate. A threaded anchor bolt 3 is installed inside the support plate 1. The bottom of the threaded anchor bolt 3 is tapered, designed to break down the chemical agent 2, thereby contacting the chemical agent inside and further enhancing the bond strength between the anchor bolt and the substrate. Multiple symmetrical limiting grooves are evenly distributed at both ends of the threaded anchor bolt 3, allowing for adjustment and fixation of its length, ensuring stability at different length positions. An adjustment mechanism 4 is installed inside the threaded anchor bolt 3, which changes the working length of the threaded anchor bolt 3 through its relative movement. The threaded anchor bolt 3 is externally threaded and connected to a rotating plate 5. The center of the rotating plate 5 is provided with a threaded hole that matches the threaded anchor bolt 3. By rotating the rotating plate 5, it can move up and down along the axis of the threaded anchor bolt 3, thereby achieving the function of fastening or adjustment.
[0028] Reference Figures 2 to 4The adjusting mechanism 4 includes a sliding shaft 42, which is externally slidably connected to the inside of a threaded anchor bolt 3. The threaded anchor bolt 3 guides the sliding of the sliding shaft 42, preventing it from shifting during sliding and improving its sliding stability. A threaded post 41 is fixedly connected to the top of the sliding shaft 42 by welding. Pulling the threaded post 41 causes the sliding shaft 42 to slide inside the threaded anchor bolt 3, thereby adjusting the length of the threaded anchor bolt 3. A fixing block 43 is fixedly connected to the bottom of the sliding shaft 42. The fixing block 43 has a groove inside for guiding, and the sliding shaft 42 supports the fixing block 43, thereby enhancing its load-bearing capacity. A reset assembly 44 is slidably connected inside the fixing block 43. The fixing block 43 guides the reset of the reset assembly 44, preventing it from shifting during operation and improving its operational stability.
[0029] The reset assembly 44 includes two limiting rods 441, which are externally slidably connected to the inside of a sliding shaft 42. The sliding shaft 42 guides the sliding of the two limiting rods 441, preventing them from shifting during sliding and ensuring stable sliding. The two limiting rods 441 are externally slidably connected to the left and right ends of a fixing block 43. The fixing block 43 has multiple limiting grooves on its exterior, which are adapted to the shape of the two limiting rods 441. By embedding the two limiting rods 441 into these grooves, the sliding shaft 42 is fixed, thereby allowing adjustment of the length of the threaded anchor bolt 3. A support rod 442 is slidably connected internally to the two limiting rods 441. The support rod 442 is horizontally positioned and serves to support and guide the sliding of the limiting rods 441, ensuring that the two limiting rods 441 maintain synchronous horizontal movement. A spring 443 is sleeved on the outside of the support rod 442. The support rod 442 provides support for the spring 443, ensuring that the spring 443 is evenly stressed, thereby improving the service life of the spring 443. The left and right ends of the spring 443 are respectively fixedly connected to the adjacent ends of the two limiting rods 441. By compressing the two limiting rods 441, the spring 443 is deformed under force, and the spring 443 releases its elastic force, causing the two limiting rods 441 to return to their original position and embed into the interior of multiple limiting grooves to achieve limiting and fixing.
[0030] Specifically, by manually pulling the threaded post 41, the threaded post 41 drives the sliding shaft 42 to slide inside the threaded anchor bolt 3, thereby adjusting the length of the threaded anchor bolt 3. When the sliding shaft 42 moves, it drives the two limiting rods 441 to move synchronously. At this time, the threaded anchor bolt 3 squeezes the two limiting rods 441, causing the two limiting rods 441 to contract under force and slide inside the fixing block 43. At the same time, the compression spring 443 deforms. When the two limiting rods 441 move to the multiple limiting grooves outside the threaded anchor bolt 3, the spring 443 releases the elastic force, causing the two limiting rods 441 to reset under force and embed into the limiting groove, thereby completing the fixation of the sliding shaft 42 and thus completing the adjustment of the length of the threaded anchor bolt 3.
[0031] The implementation principle of this application embodiment is as follows: Chemical agent 2 is placed inside the support plate 1, and then threaded anchor bolt 3 is placed inside the support plate 1. Rotating the threaded anchor bolt 3 causes it to crush the chemical agent 2, scattering the contents. As the threaded anchor bolt 3 continues to rotate, the cooling effect of the chemical agent 2 eventually fixes the threaded anchor bolt 3 to the substrate. When adapting to substrates of different lengths, pulling the threaded column 41 drives the sliding shaft 42 to slide inside the threaded anchor bolt 3. At this time, the threaded anchor bolt 3 compresses... Two limiting rods 441 are used to compress and slide within the fixed block 43, compressing the spring 443 and causing it to deform. When the limiting rods 441 reach the limiting groove inside the threaded anchor bolt 3, the spring 443 releases its elastic force, causing the two limiting rods 441 to fit tightly into the limiting groove, thus fixing the sliding shaft 42 and adjusting the length of the threaded anchor bolt 3. Finally, by rotating the rotating plate 5, the rotating plate 5 comes into contact with the substrate surface, thereby tightening the threaded anchor bolt 3.
[0032] 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. An adjustable-length chemical anchor device, comprising a support plate (1), characterized in that: The support plate (1) is internally slidably connected with a chemical agent (2), the support plate (1) is internally provided with a threaded anchor bolt (3), the threaded anchor bolt (3) is internally provided with an adjustment mechanism (4), and the threaded anchor bolt (3) is externally threadedly connected with a rotating plate (5). The adjustment mechanism (4) includes a sliding shaft (42), which is externally slidably connected to the inside of the threaded anchor (3). A threaded column (41) is fixedly connected to the top of the sliding shaft (42), and a fixing block (43) is fixedly connected to the bottom of the sliding shaft (42). A reset assembly (44) is slidably connected to the inside of the fixing block (43).
2. The adjustable-length chemical anchor device according to claim 1, characterized in that: The reset assembly (44) includes two limiting rods (441), the two limiting rods (441) are externally slidably connected to the inside of the sliding shaft (42), and a support rod (442) is slidably connected inside the two limiting rods (441). A spring (443) is sleeved on the outside of the support rod (442).
3. The adjustable-length chemical anchor device according to claim 2, characterized in that: The two limiting rods (441) are slidably connected to the inside of the left and right ends of the fixed block (43), and the left and right ends of the spring (443) are fixedly connected to the adjacent ends of the two limiting rods (441).
4. The adjustable-length chemical anchor device according to claim 1, characterized in that: The threaded anchor (3) has multiple symmetrical limiting grooves at its left and right ends, and the bottom end of the threaded anchor (3) is conical.