Round bar toothed clamping plate anchor

Abstract

The utility model relates to the technical field of anchorage device, especially disclose a round bar tooth shape splint anchorage device, including lower round bar tooth shape splint, convex tooth no.

Description

Technical Field

[0001] This utility model relates to the field of anchor technology, and in particular to a round bar-shaped toothed clamp anchor. Background Technology

[0002] Anchorages are key devices used in prestressed concrete engineering to permanently anchor steel strands, wires, or reinforcing bars. They transfer the tension of prestressing tendons to the concrete structure through post-tensioning. They are divided into tension end anchorages (including wedge type, steel conical anchor, etc.) and fixed end anchorages (such as extrusion anchors).

[0003] A circular rod-shaped toothed clamp anchor (patent number: CN223410386U) discloses a circular rod-shaped toothed clamp anchor suitable for prestressed FRP fabric, belonging to the field of civil engineering and composite materials technology. Its key technical features include an FRP fabric structure, an upper semi-circular rod toothed clamp, bolts, and a lower semi-circular rod toothed clamp. The FRP fabric structure is positioned between the upper and lower semi-circular rod toothed clamps. This addresses the limitations of existing FRP beam reinforcement technologies due to material properties. Specifically, FRP, when working with reinforcing steel, struggles to fully utilize its strength to suppress structural deformation and crack development. Furthermore, FRP prestressed reinforcement lacks effective tensioning and anchoring measures, limiting its application in reinforcement projects. Existing anchoring systems, due to the characteristics of FRP material, are prone to generating excessive stress peaks at the anchor outlet, leading to premature material failure. Additionally, commonly used measures such as increasing anchor length result in excessively long, bulky, complex, and costly anchors.

[0004] In the prior art, the cylindrical toothed clamp anchor with patent number CN223410386U has solved the problems of insufficient strength development, lack of tension anchoring measures, and the tendency of traditional anchors to generate stress peaks leading to premature material failure in the reinforcement of prestressed FRP fabric. However, in practical engineering applications, with the diversification of anchoring material types, this type of traditional cylindrical toothed clamp anchor and similar anchoring devices have gradually exposed many adaptability and practicality defects, making it difficult to meet the differentiated anchoring needs of anchoring materials of different textures. The specific problems are as follows:

[0005] Anchors employ a fixed toothed structure to ensure clamping force. When applied to rigid anchoring materials, the protruding parts of the fixed teeth form point contact with the surface of the rigid material rather than a fully fitted surface contact. This results in extremely uneven stress distribution on the clamping surface. On the one hand, it is impossible to achieve a tight fit with the surface of the rigid material, leading to insufficient anchoring stability. Under long-term loads or vibration conditions, small displacements are prone to occur, affecting the overall prestressing effect of the structure. On the other hand, the local stress concentration generated by the point contact can easily cause indentations, cracks, or even damage to the surface of the rigid anchoring material. In severe cases, this may reduce the load-bearing strength of the anchoring material and leave safety hazards. Furthermore, the frequent replacement of specialized anchors for different rigid anchoring materials significantly reduces the versatility and adaptability of the anchors. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a cylindrical toothed clamping plate anchor, which solves the problem that when anchors use a fixed toothed structure to ensure clamping force and are applied to rigid anchoring materials, the protruding part of the fixed toothed structure forms point contact with the surface of the rigid material instead of a fully fitted surface contact. This results in extremely uneven stress on the clamping surface. On the one hand, it is impossible to achieve a tight fit with the surface of the rigid material, resulting in insufficient anchoring stability. Under long-term load or vibration conditions, small displacements are prone to occur, affecting the overall prestressing effect of the structure. On the other hand, the local stress concentration generated by point contact can easily cause indentations, cracks, or even damage to the surface of the rigid anchoring material. In severe cases, it may reduce the load-bearing strength of the anchoring material and leave safety hazards. At the same time, the frequent replacement of special anchors for different rigid anchoring materials significantly reduces the versatility and adaptability of the anchors.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A cylindrical bar-shaped toothed clamping anchor includes a lower cylindrical bar toothed clamping plate, a first tooth, an upper cylindrical bar toothed clamping plate, and a second tooth. The lower and upper cylindrical bar toothed clamping plates serve as the core load-bearing components of the anchor. Together, they form an annular clamping space, which is the basic carrier for installing the first tooth, fixing mechanisms, and other components. Simultaneously, they directly contact the anchored object to perform the clamping task. The first and second teeth cooperate with the first and second tooth grooves to form a mechanical engagement with the anchoring material. The lower cylindrical bar toothed clamping plate has a first tooth groove on its outer surface, and the upper cylindrical bar toothed clamping plate has two second tooth grooves on its outer surface. The lower cylindrical bar toothed clamping plate also has a first tooth groove on its outer surface. Each end of the lower cylindrical bar toothed clamping plate is provided with a fixing device for securing the first tooth. The anchoring mechanism comprises a fixed shaft, a fixed plate, bolts, a square nut one, and a square nut two. The upper round bar toothed clamping plate has identical fixing mechanisms at both ends corresponding to the two protruding teeth. The upper round bar toothed clamping plate also has identical square nuts two at both ends corresponding to each tooth groove. The fixing mechanisms secure the installation positions of the protruding teeth one and two. The bolts and the threaded connection of the square nuts one and two allow for the detachable and positioned protruding teeth one. The threaded connection provides strong fastening, ensuring that the protruding teeth one does not loosen during clamping, thus improving the anchor's load-bearing reliability. The detachable design allows for switching the position of the protruding teeth one, adapting to different materials. The rotating connection between the fixed shaft and the fixed plate simplifies the disassembly and assembly of the protruding teeth one, improving construction efficiency.

[0009] Preferably: the fixed shaft is fixedly installed on the outside of the first protrusion, one end of the fixed plate is rotatably connected to the outside of the fixed shaft, the bolt is rotatably connected to the other end of the fixed plate, the first square nut is set on the outside of the lower round bar toothed clamping plate, the bolt is threadedly connected to the inside of the first square nut, and the lower round bar toothed clamping plate is provided with two square nuts at both ends corresponding to the first tooth groove.

[0010] Preferably, the lower round bar toothed clamping plate has an assembly slot on one side corresponding to each square nut one and square nut two. Square nut one and square nut two are engaged inside the assembly slot. The lower round bar toothed clamping plate has an assembly channel on one side corresponding to each assembly slot. The lower round bar toothed clamping plate has a through hole on one side corresponding to each assembly slot. The bolt is rotatably connected inside the through hole. The upper round bar toothed clamping plate has the same assembly slot, assembly channel and through hole on its outside. The assembly slot design enables quick positioning of square nut one and square nut two and avoids installation misalignment. The assembly channel facilitates the assembly of parts and reduces the installation difficulty. The through hole and bolt are precisely matched to ensure the coaxiality of the threaded connection and improve the fixing stability.

[0011] Preferably, mounting ears are fixedly installed on both sides of the lower round bar toothed clamping plate, and connecting ears are fixedly installed on both sides of the upper round bar toothed clamping plate. The mounting ears and connecting ears, together with external fasteners, such as bolt groups, fasten the upper and lower round bar toothed clamping plates into a whole, forming a closed annular clamping space, providing a stable overall fastening support point. The ear-shaped structure facilitates the installation of external fasteners, improves the overall assembly efficiency, and enhances the overall load-bearing capacity of the anchor.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] For rigid anchoring materials, rotate the bolt to release its threaded connection with the square nut one, so that the connection between the protruding tooth one and the lower round bar toothed clamping plate is released. Place the protruding tooth one into the tooth groove two of the upper round bar toothed clamping plate, then rotate the fixing plate so that the end of the fixing plate with the bolt corresponds to the position of the square nut two. Rotate the bolt so that it completes the threaded connection with the square nut two through the through hole.

[0014] Disconnect the second protruding tooth on the upper round bar toothed clamping plate from the first square nut. Place the second protruding tooth into the first tooth groove of the lower round bar toothed clamping plate. Rotate the fixing plate so that the end of the fixing plate with the bolt aligns with the second square nut. Rotate the bolt so that it is threadedly connected to the second square nut through the through hole. At this time, the contact surfaces of the upper and lower round bar toothed clamping plates are completely aligned, forming a ring clamping structure. If the anchoring material is hard, the clamping surface is flat and tightly adheres to the material surface.

[0015] This anchor, through the operation of tooth transfer and re-fixation, enables the upper and lower cylindrical toothed clamping plates to form a complete annular clamping structure. This transforms the clamping surface from a point of contact with the fixed tooth protrusion to a flat and comprehensive contact, achieving uniform force distribution on the clamping surface. This ensures tight adhesion to the surface of rigid materials, guarantees anchoring stability, and prevents minor displacements under long-term loads or vibrations, which could affect the overall prestressing effect of the structure. Simultaneously, it avoids localized stress concentrations caused by point contact, preventing indentations, cracks, or even damage to the surface of rigid anchoring materials, thus ensuring the load-bearing strength of the anchoring material. Furthermore, this anchor does not require replacement of the entire component; simply switching the tooth position allows it to adapt to anchoring materials of different textures, improving the anchor's versatility and adaptability. Attached Figure Description

[0016] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This utility model Figure 1 Diagram of the protective structure of the toothed clamping plate of the lower round bar;

[0019] Figure 3 This utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0020] Figure 4 This utility model Figure 1 Enlarged structural diagram at point B in the middle.

[0021] Legend: 1. Lower round bar toothed clamp; 2. Convex tooth one; 3. Upper round bar toothed clamp; 4. Convex tooth two; 5. Tooth groove one; 6. Tooth groove two; 7. Fixed shaft; 8. Fixed plate; 9. Bolt; 10. Square nut two; 11. Square nut one; 12. Assembly slot; 13. Assembly channel; 14. Through hole; 15. Mounting ear; 16. Connecting ear. Detailed Implementation

[0022] This application provides a cylindrical toothed clamping plate anchor, which effectively solves the problem that when anchors use a fixed toothed structure to ensure clamping force and are applied to rigid anchoring materials, the protruding part of the fixed toothed structure forms point contact with the surface of the rigid material instead of a fully fitted surface contact. This results in extremely uneven stress on the clamping surface. On the one hand, it is impossible to achieve a tight fit with the surface of the rigid material, resulting in insufficient anchoring stability. Under long-term load or vibration conditions, small displacements are prone to occur, affecting the overall prestressing effect of the structure. On the other hand, the local stress concentration generated by point contact can easily cause indentations, cracks, or even damage to the surface of the rigid anchoring material. In severe cases, it may reduce the load-bearing strength of the anchoring material and leave safety hazards. At the same time, the frequent replacement of special anchors for different rigid anchoring materials greatly reduces the technical problem of anchor versatility and adaptability.

[0023] Example

[0024] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the technical solution in this application effectively solves the problem that when anchors use a fixed tooth structure to ensure clamping force, and this structure is applied to rigid anchoring materials, the protruding part of the fixed tooth forms point contact with the surface of the rigid material instead of a fully fitted surface contact. This results in extremely uneven stress on the clamping surface. On the one hand, it is impossible to achieve a tight fit with the surface of the rigid material, resulting in insufficient anchoring stability. Under long-term load or vibration conditions, small displacements are prone to occur, affecting the overall prestressing effect of the structure. On the other hand, the local stress concentration generated by point contact can easily cause indentations, cracks, or even damage to the surface of the rigid anchoring material. In severe cases, this may reduce the load-bearing strength of the anchoring material and leave safety hazards. At the same time, the frequent replacement of special anchors for different rigid anchoring materials significantly reduces the versatility and adaptability of the anchors. The overall approach is as follows:

[0025] To address the problems existing in the prior art, this utility model provides a cylindrical toothed clamping plate anchor, including a lower cylindrical toothed clamping plate 1 and an upper cylindrical toothed clamping plate 3. The lower cylindrical toothed clamping plate 1 has two protruding teeth 2 on one side corresponding to the upper cylindrical toothed clamping plate 3. The lower cylindrical toothed clamping plate 1 has a toothed groove 5 on its outer side. The lower cylindrical toothed clamping plate 1 and the upper cylindrical toothed clamping plate 3 are the core load-bearing components of the anchor. The two together can form an annular clamping space, which is the basic carrier for installing the protruding teeth 2, fixing mechanism and other components. At the same time, they directly contact the anchored object to undertake the clamping task. The protruding teeth 2 and 4 cooperate with the toothed groove 5 and toothed groove 6 to form a mechanical engagement with the anchoring material.

[0026] The lower round bar toothed clamping plate 1 has fixing mechanisms at both ends corresponding to each protruding tooth 2 for fixing the protruding tooth 2. Each fixing mechanism includes a fixing shaft 7, a fixing plate 8, a bolt 9, and a square nut 10. The fixing shaft 7 is fixedly installed on the outside of the protruding tooth 2. One end of the fixing plate 8 is rotatably connected to the outside of the fixing shaft 7, and the bolt 9 is rotatably connected to the other end of the fixing plate 8. The square nut 11 is set on the outside of the lower round bar toothed clamping plate 1, and the bolt 9 is threadedly connected to the inside of the square nut 11. The lower round bar toothed clamping plate 1 is... Both ends of the tooth groove 5 are provided with square nuts 10. The fixing mechanism fixes the installation position of the tooth 2 and the tooth 4. The bolt 9 is connected to the square nuts 11 and 10 by thread, so that the tooth 2 can be disassembled and positioned. The threaded connection has strong fastness and can ensure that the tooth 2 does not loosen during the clamping process, thereby improving the load-bearing reliability of the anchor. The detachable design allows the position of the tooth 2 to be switched to adapt to different materials. The rotational connection between the fixing shaft 7 and the fixing plate 8 simplifies the disassembly and assembly of the tooth 2 and improves the construction efficiency.

[0027] The upper round bar toothed clamp 3 has a protruding tooth 4 on one side corresponding to the lower round bar toothed clamp 1. The upper round bar toothed clamp 3 has two toothed grooves 6 on its outer side. The upper round bar toothed clamp 3 has the same fixing mechanism at both ends corresponding to the protruding tooth 4. The upper round bar toothed clamp 3 has the same square nut 10 at both ends corresponding to each toothed groove 6.

[0028] The lower round bar toothed clamping plate 1 has an assembly slot 12 on one side corresponding to each square nut 11 and square nut 2 10. The square nut 11 and square nut 2 10 are engaged inside the assembly slot 12. The lower round bar toothed clamping plate 1 has an assembly channel 13 on one side corresponding to each assembly slot 12. The lower round bar toothed clamping plate 1 has a through hole 14 on one side corresponding to each assembly slot 12. The bolt 9 is rotatably connected inside the through hole 14. The design of the assembly slot 12 realizes the quick positioning of the square nut 11 and square nut 2 10 and avoids installation misalignment. The assembly channel 13 facilitates the assembly of parts and reduces the installation difficulty. The through hole 14 and the bolt 9 are precisely matched to ensure the coaxiality of the threaded connection and improve the fixing stability.

[0029] The upper round bar toothed clamp 3 is provided with the same assembly slot 12, assembly channel 13 and through hole 14 on the outside.

[0030] Mounting ears 15 are fixedly installed on both sides of the lower round bar toothed clamping plate 1, and connecting ears 16 are fixedly installed on both sides of the upper round bar toothed clamping plate 3. The mounting ears 15 and connecting ears 16, together with external fasteners such as 9 sets of bolts, fasten the upper and lower round bar toothed clamping plates 1 into a whole, forming a closed annular clamping space, providing a stable overall fastening support point. The ear-shaped structure facilitates the installation of external fasteners, improves the overall assembly efficiency, and enhances the overall load-bearing capacity of the anchor.

[0031] Working principle:

[0032] For rigid anchoring materials, rotate bolt 9 to release its threaded connection with square nut 11, so that the connection between tooth 2 and lower round bar toothed clamp 1 is released. Place tooth 2 into the tooth groove 6 of upper round bar toothed clamp 3. Then rotate fixing plate 8 so that the end of fixing plate 8 with bolt 9 corresponds to the position of square nut 10. Rotate bolt 9 so that it completes the threaded connection with square nut 10 through through hole 14.

[0033] Disconnect the upper tooth 4 of the upper round bar toothed clamping plate 3 from the square nut 11, place the tooth 4 into the tooth groove 5 of the lower round bar toothed clamping plate 1, rotate the fixing plate 8 so that the end of the fixing plate 8 containing the bolt 9 corresponds to the square nut 10, rotate the bolt 9 so that it is threadedly connected to the square nut 10 through the through hole 14. At this time, the contact surfaces of the upper and lower round bar toothed clamping plates 1 are completely aligned, forming a ring clamping structure. If the anchoring material is hard, the clamping surface is flat and closely adheres to the material surface.

[0034] For soft anchoring materials: maintain the initial position of tooth 12 and tooth 24, that is, do not perform the above-mentioned tooth 12 transfer operation, tooth 12 and tooth 24 form a tooth-like interlocking structure to enhance the gripping force;

[0035] Using mounting ears 15 and connecting ears 16, along with external fasteners such as bolts 9, the upper and lower round bar toothed clamping plates 1 are tightened as a whole, so that the annular clamping space forms a stable clamping for the anchored object.

[0036] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A cylindrical toothed clamp anchor, comprising a lower cylindrical toothed clamp (1), a first tooth (2), an upper cylindrical toothed clamp (3), and a second tooth (4), wherein the lower cylindrical toothed clamp (1) has a toothed groove (5) on its outer side, and the upper cylindrical toothed clamp (3) has two toothed grooves (6) on its outer side, characterized in that, The lower round bar toothed clamp (1) has a toothed groove (5) on its outside. The lower round bar toothed clamp (1) has a fixing mechanism for fixing the tooth (2) at both ends of each tooth (2). Each fixing mechanism includes a fixing shaft (7), a fixing plate (8), a bolt (9), a square nut (11) and a square nut (20). Among them, the upper round bar toothed clamp (3) is provided with the same fixing mechanism at both ends of the corresponding protrusion tooth (4), and the upper round bar toothed clamp (3) is provided with the same square nut (10) at both ends of each tooth groove (6).

2. The cylindrical toothed clamp anchor as described in claim 1, characterized in that, The fixed shaft (7) is fixedly installed on the outside of the first tooth (2). One end of the fixed plate (8) is rotatably connected to the outside of the fixed shaft (7). The bolt (9) is rotatably connected to the other end of the fixed plate (8). The first square nut (11) is set on the outside of the lower round bar toothed clamping plate (1). The bolt (9) is threadedly connected to the inside of the first square nut (11). The two ends of the lower round bar toothed clamping plate (1) corresponding to the first tooth groove (5) are both provided with the second square nut (10).

3. The cylindrical toothed clamp anchor as described in claim 1, characterized in that, The lower round bar toothed clamp (1) has an assembly slot (12) on one side corresponding to each square nut one (11) and square nut two (10). Among them, square nut one (11) and square nut two (10) are engaged inside the assembly slot (12).

4. The cylindrical toothed clamp anchor as described in claim 1, characterized in that, The lower round bar toothed clamp (1) has an assembly channel (13) on one side corresponding to each assembly slot (12).

5. The cylindrical toothed clamp anchor as described in claim 1, characterized in that, The lower round bar toothed clamp (1) has a through hole (14) on one side corresponding to each assembly slot (12), and the bolt (9) is rotatably connected inside the through hole (14).

6. The cylindrical toothed clamp anchor as described in claim 1, characterized in that, The upper round bar toothed clamp (3) is provided with the same assembly slot (12), assembly channel (13) and through hole (14) on its outside.

7. The cylindrical toothed clamp anchor as described in claim 1, characterized in that, Mounting ears (15) are fixedly installed on both sides of the lower round bar toothed clamp (1).

8. The cylindrical toothed clamp anchor as described in claim 1, characterized in that, Connecting ears (16) are fixedly installed on both sides of the upper round bar toothed clamp (3).

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