Steel bar anchoring device for concrete construction
By combining threaded hollow anchor rods, arched pads, and expansion anchor heads, the problem of steel anchor rods sliding before the concrete has solidified is solved, achieving a stable anchoring effect.
Patent Information
- Application Number
- CN202520059930.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-10
- Publication Date
- 2026-01-20
- Estimated Expiration
- 2035-01-10
AI Technical Summary
In existing technologies, steel anchor rods are prone to sliding before the concrete has hardened, resulting in gaps between the steel anchor rod and the concrete, which affects the anchoring effect.
The structure employs a combination of threaded hollow anchor rods, arched pads, and expansion anchor heads. Through the cooperation of insertion rods, triggering connecting rods, and limiting blocks, it ensures that the steel anchor rods maintain their initial stress before the concrete solidifies and are fixed after the concrete is formed.
It effectively prevents the steel anchor rod from sliding before the concrete hardens, ensuring the anchoring effect, avoiding the formation of gaps, and improving the stability and reliability of the anchoring device.
Smart Images
Figure CN223813852U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the technical field of steel bar anchoring, in particular to a steel bar anchoring device for concrete construction. BACKGROUND
[0002] With the continuous development of science and technology and economy, buildings are getting higher and higher, and therefore more powerful and effective building components are needed to bear the weight of the high buildings, and the steel bar anchoring device is one of the building components, the steel bar anchoring device is anchored on the anchoring device and then jointly cast in the concrete, the steel bar anchoring device can effectively enhance the connection between the concrete and the steel bar, and common anchoring methods include:
[0003] Basic anchoring: directly inserting the steel bar into the concrete, relying on the friction and mechanical engagement force between the steel bar and the concrete to transmit stress.
[0004] Bonding anchoring: bonding the steel bar and the concrete together through a bonding agent such as epoxy resin.
[0005] Mechanical anchoring: connecting the steel bar and the concrete using anchoring members such as anchor bolts, anchor plates and the like.
[0006] However, in actual application, the steel bar anchor is mainly connected through the friction between the steel bar anchor and the concrete, and after grouting, the steel bar anchor needs to be pulled outward to maintain a certain initial stress, but at this time the concrete has not yet solidified, and when pulled outward, the steel bar anchor is prone to sliding, resulting in gaps between the steel bar anchor and the concrete and anchoring failure.
[0007] Therefore, the technical personnel in the art provide a steel bar anchoring device for concrete construction to solve the problems in the background art. CONTENT OF THE UTILITY MODEL
[0008] In order to solve the problems in the background art, the application provides a steel bar anchoring device for concrete construction.
[0009] The steel bar anchoring device for concrete construction provided by the application adopts the following technical scheme:
[0010] A steel bar anchoring device for concrete construction, comprising a threaded hollow anchor rod, an arched backing plate and an expansion anchor head, the arched backing plate and the expansion anchor head are respectively arranged at the tail end and the head end of the threaded hollow anchor rod, a shaft sleeve is further sleeved on the head end of the threaded hollow anchor rod, the expansion anchor head is movably sleeved on the shaft sleeve, a head cover matched with the position limiting is further sleeved on the front end of the expansion anchor head, a plurality of built-in grooves are uniformly arranged on the surface of the expansion anchor head, and a plug rod matched with the position fixing of the expansion anchor head is rotatably installed in the built-in grooves.
[0011] Further, the front end of the insertion rod extends inwardly with a flap, and a fixed shaft is provided through the front end of the insertion rod, the fixed shaft is installed in the built-in slot, the flap is hingedly connected with a trigger link, the end of the trigger link is hingedly connected with a movable rod through a ball hinge seat, the movable rod is slidingly arranged in the expansion anchor head, and the end of the movable rod extending out of the expansion anchor head is further connected with a pressing ring, the front and rear ends of the shaft sleeve are connected with limiting rings, and the limiting rings are in extrusion fit with the pressing ring.
[0012] Further, the end of the movable rod inserted into the expansion anchor head is further provided with a restoring spring, and the restoring spring is installed inside the expansion anchor head.
[0013] Further, a threaded sleeve is installed in the head cover, the threaded hollow anchor rod is in threaded fit with the threaded sleeve, and an L-shaped slot is arranged at the opening of the inner wall of the head cover, and a limiting block matched with the L-shaped slot is arranged on the outer surface of the expansion anchor head.
[0014] Further, a conical seat is further installed at the end of the head cover, the conical seat is hollow inside and a plurality of through grooves are arranged on the surface, a striking block is movably installed at the center of the conical seat, a supporting spring is installed between the striking block and the head cover, and a plurality of reverse insertion rods are hingedly installed on the surface of the striking block and arranged in the through grooves.
[0015] Further, a strip-shaped groove is further arranged on the inner wall of the through groove, and a positioning shaft is arranged through the reverse insertion rod and movably installed in the strip-shaped groove.
[0016] In summary, the present application has the following beneficial technical effects:
[0017] 1. The insertion rod is installed in the expansion anchor head, after the head cover abuts against the innermost end of the anchor hole, the threaded hollow anchor rod is rotated, and the limiting block and the pressing ring are matched to push the insertion rod to turn outwardly until the insertion rod is inserted into the inner wall of the anchor hole to limit the threaded hollow anchor rod from continuing to move, at this time, the threaded hollow anchor rod can be pulled outwardly to apply an initial stress, and the structure is relatively stable and not easy to fail.
[0018] 2. The conical seat is further installed at the end of the head cover, when the striking block abuts against the innermost end of the anchor hole and shrinks, the striking block pushes the reverse insertion rod to turn and finally inserts into the end of the anchor hole, the head cover can be fixed, and the stability of the head cover can be maintained when the threaded hollow anchor rod is rotated. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 is a schematic view of the overall structure of the present application;
[0020] Figure 2 is a schematic view of the expansion anchor head structure of the present application;
[0021] Figure 3is a schematic diagram of the internal structure of the expansion anchor head of the present application;
[0022] Figure 4 is a schematic diagram of the cross-sectional structure of the head cover of the present application;
[0023] Figure 5 is an exploded schematic diagram of the internal structure of the conical seat of the present application.
[0024] Marked for explanation: 1, threaded hollow anchor rod; 2, arched backing plate; 3, expansion anchor head; 301, insertion rod; 302, trigger connecting rod; 303, movable rod; 304, extrusion ring; 305, recovery spring; 306, limiting block; 31, shaft sleeve; 311, limiting ring; 32, head cover; 321, threaded sleeve; 322, L-shaped insertion slot; 323, conical seat; 324, impact block; 325, supporting spring; 326, reverse insertion rod; 327, through groove; 328, strip-shaped groove; 329, positioning shaft. DETAILED DESCRIPTION
[0025] In order to make the technical problems, technical schemes and beneficial effects to be solved by the present application more clear and explicit, the present application will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.
[0026] Example one
[0027] Referring to Figure 1 , Figure 2 , Figure 3 , Figure 4 , the present application discloses a reinforcing steel anchoring device for concrete construction, which comprises a threaded hollow anchor rod 1, an arched backing plate 2 and an expansion anchor head 3. The arched backing plate 2 and the expansion anchor head 3 are respectively arranged at the tail end and the head end of the threaded hollow anchor rod 1. A shaft sleeve 31 is further sleeved on the head end of the threaded hollow anchor rod 1. The expansion anchor head 3 is movably sleeved on the shaft sleeve 31. A head cover 32 is further sleeved on the front end of the expansion anchor head 3 to limit the position. A plurality of built-in grooves are uniformly arranged on the surface of the expansion anchor head 3. An insertion rod 301 is rotatably installed in the built-in grooves to fix the position of the expansion anchor head 3. A warped plate extends inwardly from the front end of the insertion rod 301. A fixing shaft is arranged through the front end of the insertion rod 301. The fixing shaft is installed in the built-in grooves. A trigger connecting rod 302 is hingedly connected to the warped plate. An end of the trigger connecting rod 302 is hingedly connected to a movable rod 303 through a ball hinge seat. The movable rod 303 is slidably arranged in the expansion anchor head 3. An extrusion ring 304 is further connected to the end of the movable rod 303 extending out of the expansion anchor head 3. Limiting rings 311 are connected to the front and rear ends of the shaft sleeve 31. The limiting rings 311 are extrudedly matched with the extrusion ring 304.
[0028] Specific, the end of the movable rod 303 inserted into the expansion anchor head 3 is also provided with a restoring spring 305, the restoring spring 305 is installed inside the expansion anchor head 3, a recess is also provided in the middle of the flap, the trigger connecting rod 302 is inserted into the recess and is installed inside the recess through a hinged shaft, when the threaded hollow anchor rod 1 drives the sleeve 31 to slide outward, the limiting ring 311 at the end of the sleeve 31 will approach the extrusion ring 304, thereby pushing the movable rod 303 to slide into the expansion anchor head 3, at this time the movable rod 303 will push the trigger connecting rod 302 to slide, under the cooperation of the trigger connecting rod 302 and the flap, thereby pushing the plug rod 301 to turn outward, when the plug rod 301 turns to a sufficient angle, it will be inserted into the inner wall of the anchor hole, thereby limiting the movement of the threaded hollow anchor rod 1, at this time, while maintaining the initial stress of the threaded hollow anchor rod 1, grouting can be carried out in the anchor hole through the threaded hollow anchor rod 1, after grouting is completed, through the cooperation of the nut and the arched pad 2, the threaded hollow anchor rod 1 can be fixed in the anchor hole, after the concrete is formed and solidified, the anchoring work can be completed, in order to keep the head cover 32 close to the inner end of the anchor hole, a threaded sleeve 321 is also installed in the head cover 32, the threaded hollow anchor rod 1 is threadedly connected to the threaded sleeve 321, and an L-shaped slot 322 is also provided at the opening of the inner wall of the head cover 32, a limiting block 306 is provided on the outer surface of the expansion anchor head 3, which cooperates with the L-shaped slot 322, when the head cover 32 abuts against the inner end of the anchor hole, the threaded hollow anchor rod 1 is rotated, through cooperation with the threaded sleeve 321, the threaded hollow anchor rod 1 will gradually exit outward, in order to keep the expansion anchor head 3 stationary, the limiting block 306 provided on the expansion anchor head 3 is inserted into the L-shaped slot 322, when the threaded hollow anchor rod 1 rotates to exit, the rotation direction is the same as the direction in which the short side of the L-shaped slot 322 extends, at this time the limiting block 306 is limited at the inner end of the L-shaped slot 322, thereby cooperating to fix the position of the expansion anchor head 3, keeping it stationary, facilitating the outward opening of the plug rod 301 in the expansion anchor head 3.
[0029] Referring to Figure 1 , Figure 2 , Figure 5As shown, in order to avoid that the threaded hollow anchor rod 1 rotates, the head cover 32 rotates together, a conical seat 323 is further installed on the end of the head cover 32, the inside of the conical seat 323 is hollow and a plurality of through grooves 327 are formed on the surface, the center of the conical seat 323 movably installs an impact block 324, the support spring 325 is installed between the impact block 324 and the head cover 32, a plurality of reverse inserting rods 326 are hingedly installed on the surface of the impact block 324, the reverse inserting rods 326 are arranged in the through grooves 327, a strip-shaped groove 328 is further formed on the inner wall of the through grooves 327, a positioning shaft 329 is arranged on the reverse inserting rod 326 and movably installed in the strip-shaped groove 328, when the head cover 32 is pushed to abut against the innermost end of the anchor hole, the impact block 324 is extruded and shrinks into the conical seat 323, at this time, the impact block 324 pushes the reverse inserting rod 326 to overturn until the reverse inserting rod 326 is inserted on the inner end of the anchor hole, so that the head cover 32 is limited and fixed.
[0030] The standard parts used in the utility model can be purchased from the market, the special-shaped parts can be ordered according to the description and the drawings, the specific connection mode of each part adopts the conventional means such as bolt, rivet and welding in the prior art, the machinery, parts and equipment adopt the conventional type in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, which will not be described in detail here.
[0031] Meanwhile, the contents not described in detail in the specification all belong to the prior art known by the person skilled in the art.
[0032] The implementation principle of the reinforcing steel bar anchoring device for concrete construction is:
[0033] In use, first, the limiting block 306 on the expansion anchor head 3 is aligned with the L-shaped slot 322, the expansion anchor head 3 is inserted into the head cover 32, then the threaded hollow anchor rod 1 is screwed into the threaded sleeve 321, and then the threaded hollow anchor rod 1 can be inserted into the anchor hole, the head cover 32 is pushed against the innermost end of the anchor hole, and then the threaded hollow anchor rod 1 is reversely rotated, and through the threaded cooperation with the threaded sleeve 321, the threaded hollow anchor rod 1 is screwed outwards, at this time, the limiting block 306 enters the innermost end of the L-shaped slot 322 along the short side of the L-shaped slot 322, and the expansion anchor head 3 is limited by the L-shaped slot 322 and remains stationary, with the movement of the threaded hollow anchor rod 1, the limiting ring 311 on the shaft sleeve 31 gradually approaches the extrusion ring 304 and pushes the movable rod 303 to slide into the expansion anchor head 3, and the movable rod 303 can push the trigger connecting rod 302 to slide, and when the trigger connecting rod 302 pushes the flap to flip, the push-in rod 301 can be triggered to flip outwards, and when the flip angle of the push-in rod 301 is large enough, the push-in rod 301 is inserted on the inner wall of the anchor hole, so as to limit the threaded hollow anchor rod 1 from continuing to move, at this time, the threaded hollow anchor rod 1 can be pulled outwards to maintain the initial stress, then the threaded hollow anchor rod 1 can be grouted into the anchor hole, and after grouting is completed, the threaded hollow anchor rod 1 can be fixed in the anchor hole through the cooperation of the nut and the arched pad 2, and after the concrete is formed and solidified, the anchoring work is completed.
[0034] In addition, the head cover 32 is prevented from rotating together with the threaded hollow anchor rod 1 when the threaded hollow anchor rod 1 rotates, when the head cover 32 is pushed against the innermost end of the anchor hole, the impact block 324 is pressed and shrinks into the conical seat 323, at this time, the impact block 324 pushes the reverse insertion rod 326 to flip until the reverse insertion rod 326 is inserted on the inner end of the anchor hole, so as to limit and fix the head cover 32, and the head cover 32 can be kept at the innermost end of the anchor hole.
[0035] The basic principle, main features and advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above examples, and the above examples and descriptions in the specification are only preferred examples of the utility model and are not used to limit the utility model, various changes and improvements of the utility model can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The protection scope of the utility model is defined by the appended claims and equivalents thereof.
Claims
1. A steel bar anchoring device for concrete construction, comprising a threaded hollow anchor rod (1), an arched pad (2), and an expansion anchor head (3), characterized in that, The arched pad (2) and the expansion anchor head (3) are respectively set at the tail end and head end of the threaded hollow anchor rod (1). A bushing (31) is also fitted on the head end of the threaded hollow anchor rod (1). The expansion anchor head (3) is movably fitted on the bushing (31). A head cover (32) for matching and limiting is also fitted on the front end of the expansion anchor head (3). Multiple internal grooves are evenly opened on the surface of the expansion anchor head (3). An insert rod (301) for matching and fixing the position of the expansion anchor head (3) is rotatably installed in the internal groove.
2. The steel reinforcement anchoring device for concrete construction according to claim 1, characterized in that: The front end of the insert rod (301) extends inward with a rocker plate, and a fixed shaft is provided through the front end of the insert rod (301). The fixed shaft is installed in the built-in groove. A triggering link (302) is hinged to the rocker plate. The end of the triggering link (302) is hinged to a movable rod (303) through a ball joint. The movable rod (303) is slidably disposed in the expansion anchor head (3). A compression ring (304) is also connected to the end of the multiple movable rods (303) extending outside the expansion anchor head (3). A limit ring (311) is connected to both the front and rear ends of the bushing (31). The limit ring (311) and the compression ring (304) are in a compression fit.
3. A steel reinforcement anchoring device for concrete construction according to claim 2, characterized in that: A restoring spring (305) is also installed on the end of the movable rod (303) that is inserted into the expansion anchor head (3). The restoring spring (305) is installed inside the expansion anchor head (3).
4. A steel reinforcement anchoring device for concrete construction according to claim 1, characterized in that: The head cover (32) is also equipped with a threaded sleeve (321), and the threaded hollow anchor rod (1) is threadedly mated in the threaded sleeve (321). The opening of the inner wall of the head cover (32) is also provided with an L-shaped slot (322), and the outer surface of the expansion anchor head (3) is provided with a limiting block (306) that mates with the L-shaped slot (322).
5. A steel reinforcement anchoring device for concrete construction according to claim 1, characterized in that: A conical seat (323) is also installed on the end of the head cover (32). The conical seat (323) is hollow inside and has multiple through slots (327) on its surface. An impact block (324) is movably installed at the center of the conical seat (323). A support spring (325) is installed between the impact block (324) and the head cover (32). Multiple reverse insertion rods (326) are hinged to the surface of the impact block (324) and are located in the through slots (327).
6. A steel reinforcement anchoring device for concrete construction according to claim 5, characterized in that: The inner wall of the through groove (327) is also provided with a strip groove (328), and a positioning shaft (329) is provided through the reverse insertion rod (326), and the positioning shaft (329) is movably installed in the strip groove (328).