Anti-freezing and slow-bonding prestressed steel strand

Abstract

The utility model relates to a kind of anti-freezing slow-bonding prestressed steel strand, belong to steel strand technical field, including support assembly, the outer side of the support assembly is wound with six thick steel wires, the outer side of the steel wire is equipped with multiple firm components capable of fastening thick steel wire, the support assembly includes steel core, the outer side of the steel core is fixed with multiple protective layers, each the protective layer and steel core are filled with buffer layer, and the outer surface of each the protective layer is adhered with adhesion layer.The anti-freezing slow-bonding prestressed steel strand, by buffer layer and protective layer cooperation, can improve the stability of thick steel wire and rigid fixation, in addition, the stability of its thick steel wire can be further improved by adhesion layer, the outer surface of thick steel wire is bundled by firm component, the steel strand is convenient for transportation, and it can also play a fixing role.The anti-freezing slow-bonding prestressed steel strand can effectively maintain its structural performance in low temperature environment, prolong service life and improve reliability.

Description

Technical Field

[0001] This utility model relates to the field of steel strand technology, specifically to a freeze-thaw resistant, slow-bonding prestressed steel strand. Background Technology

[0002] Steel strand is a metal product made of multiple high-strength steel wires spirally twisted together. It is mainly used in concrete structure engineering. By applying tension in advance, it enhances the crack resistance and load-bearing capacity of concrete. Anti-freeze and slow-bonding steel strand is a special steel strand designed for projects in cold regions.

[0003] For example, Chinese Patent (Announcement No.: CN211772368U) discloses a hollow prestressed grooved steel strand, comprising a steel wire core, a corrugated tube layer, a first steel wire layer, and a second steel wire layer from the inside out. There are six corrugated tube layers, tightly arranged around the outside of the steel wire core. The first steel wire layer is twisted and wound around the outside of the corrugated tube layer. The first steel wire layer is composed of multiple trapezoidal steel wires twisted together. The second steel wire layer is wrapped around the outside of the first steel wire layer and is composed of nine steel wires twisted together. Synthetic resin is filled between the steel wire core and the corrugated tube layer, between the corrugated tube layer and the first steel wire layer, and between the first and second steel wire layers. Compared with the prior art, the beneficial effects of this utility model are: a reasonable structure; the steel wire core enhances the strength of the steel strand; multiple corrugated tubes facilitate concrete pouring; and the first steel wire layer improves the strength of the steel strand and enhances the adhesion to the second steel wire layer.

[0004] However, the device directly twists the steel wires onto the first layer of steel wires, resulting in a smaller contact area and reduced stability of the outermost steel wires. Therefore, a freeze-thaw resistant and slow-bonding prestressed steel strand is proposed to solve the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a freeze-thaw resistant, slow-bonding prestressed steel strand with advantages such as high stability, thus solving the problems mentioned in the background section.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a freeze-thaw resistant and slow-bonding prestressed steel strand, including a support assembly, wherein six thick steel wires are wound around the outside of the support assembly, and multiple stabilizing components capable of fastening the thick steel wires are provided on the outside of the steel wires.

[0007] The support assembly includes a steel core, with multiple protective layers fixed to the outside of the steel core. A buffer layer is filled between each protective layer and the steel core, and an adhesive layer is bonded to the outer surface of each protective layer.

[0008] Furthermore, the buffer layer is made of fine steel wire, the protective layer is made of high-density polyethylene, and the adhesive layer is made of modified epoxy resin-based adhesive.

[0009] Furthermore, the outer surface of the steel core is provided with six relief grooves, all of which are spiral in shape, and the six coarse steel wires are respectively located in multiple relief grooves.

[0010] Furthermore, multiple buffer layers, protective layers, and adhesive layers are distributed on both sides of the relief groove.

[0011] Furthermore, the stabilizing component includes a connecting strap with a connecting portion at its bottom. The connecting strap is sleeved on the outside of the plurality of thick steel wires and abuts against the plurality of thick steel wires.

[0012] Furthermore, the connecting part includes a support block and an abutment block, both of which are fixed to the bottom of the connecting band. The support block and the abutment block are located at both ends of the connecting band, and a connecting rod is rotatably connected to the left side of the support block via a bearing. A connecting bolt that abuts against the right side wall of the abutment block is threaded onto the outer surface of the connecting rod.

[0013] Furthermore, the bottom of the abutment block is provided with multiple deformation grooves, all of which penetrate the front and rear sides of the abutment block.

[0014] Furthermore, a rotating head is fixed to the end of the connecting rod away from the connecting bolt, and the outer surface of the rotating head is provided with multiple friction grooves.

[0015] Compared with the prior art, this utility model provides a freeze-thaw resistant and slow-bonding prestressed steel strand, which has the following beneficial effects:

[0016] 1. This antifreeze and slow-bonding prestressed steel strand, through the combination of buffer layer and protective layer, can improve the stability of the coarse steel wire and rigid fixation. In addition, the bonding layer can further improve the stability of its coarse steel wire.

[0017] 2. This freeze-thaw resistant and slow-bonding prestressed steel strand uses a stabilizing component to bind the outer surface of the coarse steel wire, which facilitates the transportation of the steel strand and also serves to fix it. This freeze-thaw resistant and slow-bonding prestressed steel strand can effectively maintain its structural performance in low-temperature environments, extend its service life and improve its reliability. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the support component of this utility model;

[0020] Figure 3 This is a structural schematic diagram of the stabilizing component of this utility model.

[0021] In the diagram: 1 Support component, 101 Steel core, 102 Buffer layer, 103 Protective layer, 104 Adhesive layer, 2 Coarse steel wire, 3 Stabilizing component, 301 Connecting strip, 302 Connecting part, 3021 Support block, 3022 Connecting rod, 3023 Abutting block, 3024 Connecting bolt. Detailed Implementation

[0022] 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.

[0023] Please see Figures 1 to 2 In this embodiment, an antifreeze and slow-bonding prestressed steel strand includes a support component 1. Six thick steel wires 2 are wound around the outside of the support component 1 in a spiral shape. Multiple stabilizing components 3 are provided on the outside of the steel wires to secure the thick steel wires 2.

[0024] In addition, the support component 1 includes a steel core 101. The steel core 101 can improve the overall tensile strength of the device. Multiple protective layers 103 are fixed on the outside of the steel core 101. A buffer layer 102 is filled between each protective layer 103 and the steel core 101. An adhesive layer 104 is bonded to the outer surface of each protective layer 103. The buffer layer 102 and the protective layer 103 play a protective role.

[0025] It should be further explained that the buffer layer 102 is made of fine steel wire, the protective layer 103 is made of high-density polyethylene, and the adhesive layer 104 is made of modified epoxy resin-based adhesive. The main components of the modified epoxy resin-based adhesive are epoxy resin matrix, nano-silica, low-temperature curing agent and water-repellent agent. The outer surface of the steel core 101 has six relief grooves, all of which are spiral in shape. The spiral relief grooves can improve the overall stability of the steel strand. The six thick steel wires 2 are located in multiple relief grooves, and multiple buffer layers 102, protective layers 103 and adhesive layers 104 are distributed on both sides of the relief grooves.

[0026] In this embodiment, a protective sleeve needs to be fitted onto the outer surface of the device before use, and a portion of the adhesive layer 104 is adhered to the inner wall of the protective sleeve.

[0027] Please see Figure 3To further improve the overall stability of the device, the stabilizing component 3 in this embodiment includes a connecting strap 301. The bottom of the connecting strap 301 is provided with a connecting part 302. The connecting strap 301 is sleeved on the outside of the multiple thick steel wires 2 and abuts against the multiple thick steel wires 2. The connecting strap 301 of appropriate size is selected according to the diameter and length of the steel strand. The connecting strap 301 is made of a high-toughness and corrosion-resistant material to ensure its reliability during long-term use.

[0028] It should be further explained that the connecting part 302 includes a support block 3021 and an abutment block 3023. Both the support block 3021 and the abutment block 3023 are fixed to the bottom of the connecting belt 301. The support block 3021 and the abutment block 3023 are located at both ends of the connecting belt 301. The left side of the support block 3021 is rotatably connected to a connecting rod 3022 via a bearing. The outer surface of the connecting rod 3022 is threaded with a connecting bolt 3024 that abuts against the right side wall of the abutment block 3023. The threaded connection between the connecting rod 3022 and the connecting bolt 3024 achieves the fastening of the coarse steel wire 2. This fastening method can effectively prevent the coarse steel wire 2 from loosening due to vibration or external force during use, ensuring the stability of the entire steel strand structure.

[0029] In addition, the bottom of the abutment block 3023 is provided with multiple deformation grooves. The deformation grooves at the bottom of the abutment block 3023 allow it to deform to a certain extent when subjected to force. The deformation increases the contact force between it and the connecting rod 3022, thereby improving the stability of the connecting rod 3022. The multiple deformation grooves all penetrate the front and rear sides of the abutment block 3023. A rotating head is fixed to the end of the connecting rod 3022 away from the connecting bolt 3024. The outer surface of the rotating head is provided with multiple friction grooves. The multiple friction grooves can increase the friction coefficient of the rotating head surface, thereby making it easier for the user to rotate the rotating head.

[0030] In this embodiment, the stabilizing component 3 can ensure the connection stability between the supporting component 1 and the thick steel wire 2 during actual use. When it is necessary to remove the stabilizing component 3, it is only necessary to unscrew the connecting bolt 3024, which is simple and convenient to use.

[0031] Understandably, this freeze-thaw resistant and slow-bonding prestressed steel strand can effectively maintain its structural performance in low-temperature environments, extend its service life, and improve its reliability.

[0032] The working principle of the above embodiments is as follows:

[0033] The protective layer 103 is made of high-density polyethylene, which has good low-temperature toughness and impact resistance. In low-temperature environments, high-density polyethylene can maintain its structural integrity and prevent moisture penetration and ice crystal formation. The stabilizing component 3 tightly fixes the coarse steel wire 2 to the supporting component 1 through the connecting band 301 and the connecting part 302. The supporting block 3021 and the abutment block 3023 in the connecting part 302 are located at both ends of the connecting band 301, respectively. The coarse steel wire 2 is fastened by the threaded connection of the connecting rod 3022 and the connecting bolt 3024. This fastening method can effectively prevent the coarse steel wire 2 from loosening due to vibration or external force during use, and ensure the stability of the entire steel strand structure.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0035] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A freeze-thaw resistant, slow-bonding prestressed steel strand, comprising a support assembly (1), characterized in that: The support component (1) is wrapped with six thick steel wires (2) on the outside, and the outside of the steel wires is provided with multiple stabilizing components (3) that can fasten the thick steel wires (2). The support assembly (1) includes a steel core (101), and a plurality of protective layers (103) are fixed on the outside of the steel core (101). A buffer layer (102) is filled between each of the protective layers (103) and the steel core (101), and an adhesive layer (104) is bonded to the outer surface of each of the protective layers (103).

2. The freeze-thaw resistant, slow-bonding prestressed steel strand according to claim 1, characterized in that: The buffer layer (102) is made of fine steel wire, the protective layer (103) is made of high-density polyethylene, and the adhesive layer (104) is made of modified epoxy resin-based adhesive.

3. The freeze-thaw resistant, slow-bonding prestressed steel strand according to claim 1, characterized in that: The outer surface of the steel core (101) is provided with six relief grooves, all of which are spiral in shape, and the six coarse steel wires (2) are located in the relief grooves respectively.

4. The freeze-thaw resistant and slow-bonding prestressed steel strand according to claim 1, characterized in that: Multiple buffer layers (102), protective layers (103), and adhesive layers (104) are distributed on both sides of the relief groove.

5. The freeze-thaw resistant, slow-bonding prestressed steel strand according to claim 1, characterized in that: The stabilizing component (3) includes a connecting strap (301), the bottom of which is provided with a connecting part (302). The connecting strap (301) is sleeved on the outside of the plurality of thick steel wires (2) and abuts against the plurality of thick steel wires (2).

6. The freeze-thaw resistant, slow-bonding prestressed steel strand according to claim 5, characterized in that: The connecting part (302) includes a support block (3021) and an abutment block (3023). Both the support block (3021) and the abutment block (3023) are fixed to the bottom of the connecting band (301). The support block (3021) and the abutment block (3023) are located at both ends of the connecting band (301). A connecting rod (3022) is rotatably connected to the left side of the support block (3021) via a bearing. A connecting bolt (3024) is threaded onto the outer surface of the connecting rod (3022) and abuts against the right side wall of the abutment block (3023).

7. The freeze-thaw resistant and slow-bonding prestressed steel strand according to claim 6, characterized in that: The bottom of the abutment block (3023) is provided with multiple deformation grooves, and the multiple deformation grooves all penetrate the front and rear sides of the abutment block (3023).

8. The freeze-thaw resistant, slow-bonding prestressed steel strand according to claim 6, characterized in that: The end of the connecting rod (3022) away from the connecting bolt (3024) is fixed with a rotating head, and the outer surface of the rotating head is provided with multiple friction grooves.

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