Prestress lead hole threading sleeve device

Abstract

The utility model discloses a prestress lead hole threading sleeve device which comprises a sleeve body used for being connected to a steel beam needing lead hole threading in prestress construction in a sleeved mode, a deformation part arranged at one end of the sleeve body and used for being fixedly connected with the steel beam in a profiling mode in the using process, and a profiling clamp used for being connected with the deformation part in a profiling mode. The profiling pliers are matched with the deformation part, the profiling pliers comprise a profiling part and a cutting part, the profiling part is used for pressing and fixing the deformation part on a steel beam during threading of a lead hole to ensure firm connection, the cutting part is arranged at the end of the profiling part, and the cutting part is used for pinching off the redundant sleeve body after threading operation is completed; the prestress lead hole threading sleeve device solves the problems that in the prior art, an anchor bearing plate is not perpendicular to the axis of a hole channel, the length of a steel wire bundle is not appropriate, consequently, the safety and the service life of a structure are adversely affected, and the performance of the constructed structure cannot reach the standard possibly.

Description

Technical Field

[0001] The utility model relates to the technical field of building materials, in particular to a prestressed hole-guiding and wire-threading casing device. Background Art

[0002] In the construction of prestressed concrete structures, the installation accuracy of anchor plates and the threading quality of steel wire bundles have a key impact on the prestressing effect.

[0003] In the existing prestressed construction process, one of the common problems is that the anchor plate is not perpendicular to the axis of the channel. This situation is often caused by inaccurate installation and positioning of the anchor plate or uneven force during construction. When the anchor plate is not perpendicular to the axis of the channel, the steel strands or wire bundles are subjected to uneven force during the tensioning process, which may cause the wire bundles to be offset and the internal force to be unbalanced, thereby affecting the transmission efficiency of the prestress and the safety of the structure. Especially when the tensioning force increases, this non-perpendicularity will cause the force line to adjust, causing the anchor cup to slip or shake, directly affecting the accuracy and stability of the tensioning, thereby reducing the overall prestress level of the structure. In addition, inappropriate length of the wire bundle is also an important factor affecting the prestressing effect. When the wire bundle is too short, its effective anchoring cannot be ensured during the prestressing construction process, and insufficient tensioning force may occur or fail to meet the design requirements, resulting in the prestressing unable to be fully exerted. These problems will have an adverse effect on the safety and service life of the structure, and may cause the structural performance after construction to fail to meet the standards. Utility Model Content

[0004] The purpose of the utility model is to provide a prestressed hole-guiding wire casing device to solve the problems in the prior art that the anchor plate is not perpendicular to the axis of the hole, the length of the wire bundle is not appropriate, which has an adverse effect on the safety and service life of the structure and may cause the structural performance after construction to fail to meet the standards.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a prestressed hole-guiding and wire-threading casing device, comprising:

[0006] The sleeve body is used to be sleeved on the steel bundle that needs to be bored and threaded during prestressed construction; the deformation part is provided at one end of the sleeve body and is used to be connected and fixed to the steel bundle by pressing when in use;

[0007] The profiling pliers are matched with the deforming part. The profiling pliers include a profiling part and a cutting part. The profiling part is used to press and fix the deforming part on the steel bundle when threading the wire through the hole to ensure a firm connection. The cutting part is arranged at the end of the profiling part. The cutting part is used to clamp off the excess sleeve body after completing the threading operation.

[0008] Preferably, the deformation portion includes an aluminum sleeve, and the aluminum sleeve is fixed to one end of the sleeve body.

[0009] Preferably, the press-forming pliers are adapted to the aluminum sleeve.

[0010] Preferably, the inner wall of the sleeve body is provided with a stiffening thin steel wire, and the stiffening thin steel wire is arranged axially along the sleeve body.

[0011] Preferably, the outer surface of the aluminum sleeve is tapered.

[0012] Preferably, the cutting portion comprises a knife edge.

[0013] Preferably, the blade is made of alloy material and provided with a wear-resistant coating.

[0014] Preferably, the outer surface of the sleeve body is coated with a low-friction material.

[0015] Preferably, the internal structure of the aluminum sleeve is provided with internal teeth or annular grooves that engage with the surface of the steel bundle.

[0016] Preferably, the inner layer of the sleeve body is provided with a lubricating coating.

[0017] It can be seen from the above technical solution that the utility model has the following beneficial effects:

[0018] The prestressed hole-guiding and wire-threading casing device, by providing the cooperation of a deformation part and a compression pliers, can tightly fix the deformation part on the steel bundle by compression during the hole-guiding and wire-threading process, thereby ensuring a firm connection, avoiding the problem of loosening of the steel bundle during the wire-threading process in traditional construction, and improving the stability of prestressed stress transmission. The compression pliers can not only fix the deformation part on the steel bundle, but also integrate a cutting part, which can directly clamp off the excess casing body after the wire-threading operation is completed, simplifying the construction steps, reducing the time of tool switching, and effectively improving construction efficiency. Reinforcing fine steel wire is provided on the inner wall of the casing body to improve the compression and tensile strength of the casing, prevent the casing from deformation or breakage during the tensioning process, and ensure the safety of the construction process and the service life of the device. The outer surface of the casing body is coated with a low-friction material, and a lubricating coating is provided on the inner layer, which reduces the friction between the casing and the steel bundle. The friction between the aluminum sleeve and other construction parts makes the steel bundle pass more smoothly during construction, reduces the energy loss caused by friction, and improves the convenience and accuracy of construction. The outer surface of the aluminum sleeve is conical, and internal teeth or annular grooves are provided on its internal structure, which are tightly engaged with the surface of the steel bundle, thereby enhancing the connection strength between the aluminum sleeve and the steel bundle, preventing the aluminum sleeve and the steel bundle from loosening or shifting during the tensioning process, ensuring the effective transmission of prestressing. The blade of the cutting part is made of alloy material and coated with a wear-resistant coating, so that it has strong wear resistance and impact resistance, ensuring that the cutting effect is still good during long-term use, extending the service life of the device, and solving the problem that the anchor plate in the prior art is not perpendicular to the axis of the channel and the length of the steel wire bundle is not appropriate, which has an adverse effect on the safety and service life of the structure and may cause the structural performance after construction to be substandard. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the casing body of the utility model;

[0020] Figure 2 This is a structural diagram of the press-type pliers of the present utility model.

[0021] In the figure: 1. sleeve body; 2. deformation part; 21. aluminum sleeve head; 3. pressing pliers; 31. pressing part; 32. cutting part; 321. knife edge; 4. reinforcing thin steel wire. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] like Figure 1 and Figure 2 As shown, a prestressed hole-drawing and wire-threading casing device comprises a casing body 1, a deformation part 2 and a press-forming pliers 3. The casing body 1 is used to be sleeved on a steel bundle that needs to be drawn and threaded during prestressed construction. The deformation part 2 is located at one end of the casing body 1 and can be connected and fixed to the steel bundle by press-forming. The press-forming pliers 3 is matched with the deformation part 2 and comprises a press-forming part 31 and a cutting part 32. The press-forming part 31 is used to press and fix the deformation part 2 on the steel bundle when drawing the hole and threading the wire to ensure a firm connection; the cutting part 32 is located at the end of the press-forming part 31 and is used to clamp off the excess casing body 1 after the threading operation is completed.

[0024] During the construction process, the sleeve body 1 is sleeved on the steel bundle that needs to be threaded. Using the profiling pliers 3, the deformation part 2 is pressed by the profiling part 31 so that it is fixedly connected to the steel bundle, ensuring a tight connection between the steel bundle and the sleeve so that it does not loosen during the threading process. After the threading operation is completed, the cutting part 32 is used to cut off the excess sleeve part to ensure the neatness and tightness of the connection between the steel bundle and the sleeve. The device of the present invention is fixedly connected to the steel bundle through the deformation part 2 to ensure that the sleeve will not fall off during construction. At the same time, the profiling pliers 3 can complete the fixing and cutting operations, simplifying the construction steps and improving work efficiency. In addition, the cutting part 32 can accurately cut off the excess sleeve to ensure construction quality.

[0025] The structures of the deforming portion 2 and the press pliers 3 can be adjusted according to the needs of the construction site. The cutting portion 32 of the press pliers can be made of different materials or processing techniques to cope with different construction environments or steel bundle specifications.

[0026] In one possible embodiment, the deforming portion 2 includes an aluminum sleeve 21, which is fixed to one end of the sleeve body 1. As part of the deforming portion 2, the aluminum sleeve 21 is fixedly connected to the steel bundle through the action of the profiling portion 31 of the profiling pliers 3. Because aluminum has good ductility and can be firmly fixed to the steel bundle after profiling, the use of the aluminum sleeve 21 as the deforming portion 2 helps ensure a stable and secure connection during the profiling process, ensuring stability and durability during construction.

[0027] The material of the aluminum sleeve 21 can be replaced with other metal materials, such as copper or alloy, according to specific construction requirements to improve corrosion resistance or other special requirements.

[0028] In a possible embodiment, the press-forming pliers 3 are adapted to the aluminum sleeve 21, and the press-forming portion 31 of the press-forming pliers 3 is designed according to the size and shape of the aluminum sleeve 21 so that it can fit tightly with the aluminum sleeve 21, thereby ensuring that the deformation portion 2 can be effectively fixed on the steel bundle during the press-forming process. This adaptive design enables the press-forming pliers 3 to efficiently cooperate with the aluminum sleeve 21, ensuring the firmness of the connection and the smoothness of the construction.

[0029] The pressing pliers 3 can be designed differently according to the specific shape of the aluminum sleeve 21, such as being customized for aluminum sleeves of different sizes or shapes, so as to adapt to various construction environments.

[0030] In a possible embodiment, the inner wall of the sleeve body 1 is provided with a stiffening fine steel wire 4, and the stiffening fine steel wire 4 is arranged along the axial direction of the sleeve body 1. The stiffening fine steel wire 4 is arranged axially on the inner wall of the sleeve body 1, which can enhance the compressive strength and rigidity of the sleeve, and avoid deformation or damage of the sleeve due to external force during construction. The provision of the stiffening fine steel wire 4 improves the strength of the sleeve body 1, ensuring that the sleeve body 1 can maintain a good shape and function even if it is subjected to a large external force during construction, thereby extending its service life.

[0031] The reinforcement effect can be achieved by using thin steel wires of different materials or diameters, such as selecting high-strength steel wires or adopting spiral arrangements to further improve the strength of the casing.

[0032] In one possible embodiment, the outer surface of the aluminum sleeve 21 is tapered. This tapered design allows the aluminum sleeve 21 to better contact and form a tight connection with the steel bundle during the profiling process. The tapered structure helps reduce deformation forces during the profiling process and ensures connection stability. The tapered outer surface allows the aluminum sleeve 21 to more easily and tightly bond with the steel bundle during the profiling process, ensuring that the steel bundle does not loosen or fall off during threading, thereby improving construction quality.

[0033] The outer surface shape of the aluminum sleeve 21 can be designed into other shapes according to construction requirements, such as cylindrical or polygonal, to adapt to different construction needs.

[0034] In one possible embodiment, the cutting portion 32 includes a blade 321. The blade 321 in the cutting portion 32 is responsible for cutting off the excess casing after the wire threading is completed, ensuring the cleanliness of the construction site and reducing unnecessary material waste. The blade 321 is cleverly designed and can quickly and accurately cut off the excess casing. It is easy to operate and has good results, ensuring construction efficiency.

[0035] The shape, size and material of the blade 321 can be changed according to construction requirements, such as using a circular or V-shaped blade or other more wear-resistant materials.

[0036] In one possible embodiment, the blade 321 is made of an alloy material and provided with a wear-resistant coating. The alloy material provides high hardness and strength, allowing the blade 321 to maintain its sharpness even under frequent use. The wear-resistant coating further increases the blade's service life and reduces maintenance requirements. The use of the alloy material and the wear-resistant coating significantly extends the service life of the cutting portion 32, improves construction efficiency, and reduces the frequency of tool replacement.

[0037] The blade 321 may be made of other high-strength materials, such as ceramics or hard steel, and may be coated with different types of coatings, such as anti-corrosion coatings, according to specific environments.

[0038] In one possible embodiment, the outer surface of the sleeve body 1 is coated with a low-friction material. The low-friction material coating on the outer surface of the sleeve body 1 reduces the friction with other materials or tools during the construction process, facilitating the sliding operation of the sleeve. The coating of the low-friction material helps to reduce the resistance during construction and improve the construction efficiency, while reducing the surface wear of the sleeve and extending its service life.

[0039] The low-friction material can be polytetrafluoroethylene (PTFE) or other similar materials, and the coating thickness or type can be adjusted according to construction requirements to adapt to different environments.

[0040] In one possible embodiment, the internal structure of the aluminum sleeve 21 is provided with internal teeth or annular grooves, which engage with the surface of the steel bundle. The internal teeth or annular grooves of the aluminum sleeve 21 tightly engage with the surface of the steel bundle, ensuring that the aluminum sleeve is fixedly connected to the steel bundle after pressing to avoid sliding or loosening. The design of the internal teeth or annular grooves greatly improves the connection strength between the aluminum sleeve and the steel bundle, ensuring that it is not easy to fall off during construction.

[0041] The structure and size of the internal teeth or annular grooves can be adjusted according to the specifications of the steel strands to ensure the best bite effect.

[0042] In one possible embodiment, the inner layer of the casing body 1 is provided with a lubricating coating, which can reduce the friction between the steel bundle and the inner wall of the casing body 1, making the steel bundle smoother during the threading operation, thereby improving construction efficiency. The application of the lubricating coating reduces friction during construction, avoids damage to the steel bundle during the threading process, and extends the service life of the steel bundle and the casing.

[0043] Lubricating coatings can be formulated with different materials, such as silicone oil, graphite, or other lubricants, to suit varying environmental conditions. Coating thickness can also be adjusted to ensure optimal lubrication. In extreme climates, heat- or cold-resistant coatings can be used to ensure smooth construction.

[0044] Working process: The use process of the prestressed hole-drawing and wire-threading sleeve device is mainly used in prestressed construction. The prestressed steel bundle is accurately inserted into the reinforced concrete structure through the hole-drawing and wire-threading technology. First, at the construction site, confirm that the prestressed steel bundle to be threaded has been arranged in place, and check whether the specifications of the steel bundle are compatible with the various parts of the sleeve device. At the same time, prepare the various components of the device, including the sleeve body 1, the deformation part 2 (such as the aluminum sleeve 21) and the pressing pliers 3 (including the pressing part 31 and the cutting part 32), ensure that the tools and materials are intact, install the sleeve body 1 on the prestressed steel bundle that needs to be threaded, and ensure that the inner diameter of the sleeve is closely matched with the outer diameter of the steel bundle so as to maintain firmness and stability during subsequent construction. At this time, the deformation part 2 of the sleeve body 1, that is, the aluminum sleeve 21, should be located at the end of the sleeve, ready to be fixed with the steel bundle. The core operation of the pipe device is to fix the sleeve to the steel bundle through the pressing pliers 3. First, align the pressing part 31 of the pressing pliers 3 with the position of the aluminum sleeve 21, and use suitable pliers to apply pressure to it. At this time, the pressing pliers 3 deform the aluminum sleeve 21 so that it tightly wraps the steel bundle to form a firm fixed connection. The aluminum sleeve 21 is firmly connected to the steel bundle through the action of the pressing part 31, ensuring that it will not loosen during the subsequent threading operation. The ductility of the aluminum material ensures that it can form a close contact with the steel bundle when under pressure, thereby achieving reliable fixation. After the sleeve is firmly fixed on the steel bundle, the hole-drawing and threading operation is performed. At this time, the prestressed steel bundle passes through the sleeve into the pre-set lead-in hole. Due to the action of the stiffening fine steel wire 4 on the inner wall of the sleeve body 1 and the inner layer of lubricating coating, the steel bundle can pass through smoothly, and reduce friction and resistance during the threading process to avoid damage to the steel bundle. The stiffening fine steel wire 4 on the inner wall of the sleeve enhances the strength of the sleeve and prevents deformation of the sleeve during the threading process. At the same time, the presence of the lubricating coating reduces the friction between the steel bundle and the sleeve, ensuring that the threading operation is carried out smoothly. After the threading operation is completed, there may be excess sleeve parts left. At this time, the cutting part 32 of the profiling pliers 3 is used to cut off the excess sleeve. The blade 321 in the cutting part 32 is made of alloy material and is provided with a wear-resistant coating. It can cut the sleeve efficiently and accurately to ensure the construction quality. Through the action of the cutting part 32, the excess sleeve body 1 is cut off, so that the connection between the entire device and the steel bundle is neat and beautiful, ensuring that the subsequent operations of the prestressed construction can proceed smoothly. After cutting off the excess sleeve, finally check the connection status of the entire system to ensure that the sleeve and the steel bundle are firmly fixed, the profiling part is not loose, and there is no excessive resistance or damage to the steel bundle during the threading process. If each link is correct, the device can be put into the next step of the construction process.

[0045] Throughout its use, the sleeve device ensures smooth threading during prestressing construction through its secure connection to the prestressed steel strands, low-friction design, and precise cutting. The profiling and cutting functions of the profiling pliers 3 not only improve construction efficiency but also ensure precision and robustness. This device integrates multiple functions, including fixing, threading, and cutting, to meet the complex demands of prestressing construction.

[0046] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A prestressed hole-guiding and wire-threading casing device, characterized in that: include: A sleeve body (1) is used for sleeve connection on a steel bundle that needs to be bored and threaded during prestressed construction; A deformation portion (2), the deformation portion (2) being arranged at one end of the sleeve body (1), and the deformation portion (2) being used to be connected and fixed to the steel bundle by a press-forming method when in use; A press-forming pliers (3) is matched with the deformation part (2). The press-forming pliers (3) include a press-forming part (31) and a cutting part (32). The press-forming part (31) is used to press and fix the deformation part (2) on the steel bundle when threading the wire through the hole to ensure a firm connection. The cutting part (32) is arranged at the end of the press-forming part (31). The cutting part (32) is used to clamp off the excess casing body (1) after completing the threading operation.

2. A prestressed hole-guiding and wire-threading casing device according to claim 1, characterized in that: The deformation portion (2) comprises an aluminum sleeve (21), and the aluminum sleeve (21) is fixed to one end of the sleeve body (1).

3. A prestressed hole-guiding and wire-threading device according to claim 2, characterized in that: The pressing pliers (3) are adapted to the aluminum sleeve (21).

4. A prestressed hole-guiding and wire-threading device according to claim 1, characterized in that: The inner wall of the sleeve body (1) is provided with a stiffening thin steel wire (4), and the stiffening thin steel wire (4) is arranged axially along the sleeve body (1).

5. A prestressed hole-guiding and wire-threading device according to claim 2, characterized in that: The outer surface of the aluminum sleeve (21) is tapered.

6. A prestressed hole-guiding and wire-threading device according to claim 1, characterized in that: The cutting portion (32) includes a knife edge (321).

7. A prestressed hole-guiding and wire-threading device according to claim 6, characterized in that: The blade (321) is made of alloy material and is provided with a wear-resistant coating.

8. The prestressed hole-guiding and wire-threading casing device according to claim 1, characterized in that: The outer surface of the sleeve body (1) is coated with a low-friction material.

9. The prestressed hole-guiding and wire-threading casing device according to claim 2, characterized in that: The internal structure of the aluminum sleeve (21) is provided with internal teeth or annular grooves that engage with the surface of the steel bundle.

10. The prestressed hole-guiding and wire-threading casing device according to claim 1, characterized in that: The inner layer of the sleeve body (1) is provided with a lubricating coating.

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