Special-shaped concrete triangular terminal steel fiber

Abstract

The invention relates to a special-shaped concrete triangular terminal steel fiber applied to the technical field of steel fibers.The special-shaped concrete triangular terminal steel fiber comprises a steel fiber main body, a steel fiber auxiliary body, an intertwining part, spiral knots and a series-connection ring, compared with a traditional bending mode, the spiral knots at the two ends of the steel fiber main body are better in structural stability, the body space of the spiral knots is larger, and the structural stability of the spiral knots is improved. And when the spiral knot is subjected to untwisting deformation under tension, the steel fiber auxiliary body effectively prevents the untwisting deformation of the spiral knot by limiting the series connection ring, so that the anti-deformation effect of the spiral knot is effectively improved, then the twisting machining process of the spiral knot and the intertwining part is simple, and the machining efficiency is improved. The special-shaped concrete triangular terminal steel fiber is automatically produced in the whole process, the production efficiency is effectively improved, and the special-shaped concrete triangular terminal steel fiber is convenient to use and popularize.

Description

Technical Field

[0001] This invention relates to a steel fiber, and more particularly to a steel fiber for irregularly shaped concrete triangular terminals applied in the field of steel fiber technology. Background Technology

[0002] The core function of steel fibers is "toughening". Like countless tiny "steel bars", they are evenly dispersed in concrete. Through millions of tiny fibers, they form a three-dimensional, isotropic reinforcing network inside the concrete, fundamentally changing the failure mode of concrete, transforming it from a brittle material into a composite material with a certain degree of toughness. This broadens the application range of concrete, especially in fields that require high toughness, high crack resistance, and impact resistance.

[0003] To improve the bonding strength with concrete, existing steel fibers are often bent multiple times. For example, Chinese patent CN118637849A discloses a steel fiber for toughening concrete. However, steel fibers that have only been bent are prone to deformation under strong tensile force, which reduces their bonding strength with concrete. Therefore, it is necessary to reinforce the bending state of the steel fibers. For example, Chinese patent CN119176681A discloses a high-bonding-strength steel fiber for concrete. However, the added reinforcement structure increases the processing difficulty of the steel fibers, affects the production efficiency of steel fibers, and hinders the promotion and application of steel fibers. Summary of the Invention

[0004] The technical problem that this invention aims to solve in view of the above-mentioned prior art is that the bending state of existing bent and reinforced steel fibers is prone to deformation, which affects their bonding ability with concrete, and the complex reinforcement structure can easily reduce the production efficiency of steel fibers.

[0005] To address the aforementioned issues, this invention provides a steel fiber for an irregularly shaped concrete triangular terminal, comprising a steel fiber body and a steel fiber sub-body spirally intertwined with the steel fiber body. The middle portions of both the steel fiber body and the steel fiber sub-body are configured as intertwined portions, which are spirally intertwined and in contact. Both ends of the steel fiber body are fixedly connected with a spiral knot, and a series ring is fixedly connected to the top of the spiral knot. Both ends of the steel fiber sub-body are respectively inserted into the series ring. The production process of steel fibers includes the following steps: S1: Steel raw materials are drawn into steel wires through a drawing die to prepare steel fiber bodies and steel fiber sub-bodies. The steel wires are then transported by a conveying roller. S2: Using a vertical twisting device, hook the steel wire used to prepare the steel fiber body, and twist it at equal intervals on the steel wire to form a spiral knot. The part of the spiral knot that contacts the twisting device forms a series loop. S3: Cut the steel wires used to prepare the steel fiber sub-body into segments to obtain the initial steel wire body of the steel fiber sub-body. Transfer the steel wires used to prepare the main steel fiber body after step S2 to the initial steel wire body of the steel fiber sub-body and make them intersect, so that the initial steel wire body of the steel fiber sub-body passes through the series ring. S4: First, use a transverse twisting device to clamp the steel wires used to prepare the main body of the steel fiber and the initial body of the steel wires used to prepare the fiber sub-body after the treatment in step S3. Then, perform equidistant twisting and intertwining to achieve helical intertwining of the intertwined part of the steel fiber main body and the steel fiber sub-body. S5: Cut the steel wires that were twisted and intertwined in step S4 to obtain steel fibers for irregularly shaped concrete triangular terminals.

[0006] In the aforementioned irregularly shaped concrete triangular terminal steel fiber, the spiral knot has better structural stability compared to the traditional bending method, and the steel fiber sub-body effectively prevents the unwinding deformation of the spiral knot by restricting the series ring, thereby effectively improving the deformation resistance of the spiral knot.

[0007] As a further improvement of this application, in step S2, the spiral knot has two turns, and the inner diameter of the series ring is larger than the outer diameter of the steel wire used to prepare the steel fiber sub-body, so as to realize the spiral forming of the spiral knot, which facilitates the bonding of the spiral knot with concrete, and the formed series ring facilitates the passage of the steel fiber sub-body.

[0008] As a further improvement of this application, the twisting number of turns in step S4 is two and a half turns, and the twisting part and the spiral knot are formed by the same steel wire. The steel fiber body and the steel fiber sub-body are intertwined and combined through the spiral twisting of the twisting part, and then form a triangular shape with the spiral knot, which effectively improves the bonding effect with concrete.

[0009] As a further improvement of this application, both ends of the steel fiber composite are provided with bending portions, and the starting point of the bending portion contacts the tandem ring. By providing the bending portions, the tandem ring is effectively prevented from sliding to the outer end of the steel fiber composite.

[0010] As a further improvement of this application, reinforcing wires are clamped between the two intertwined portions. The length of the reinforcing wires is the same as the height of the spiral knot. By clamping reinforcing wires between the intertwined portions, the bonding effect between the intertwined portions and the concrete is effectively improved.

[0011] As a further improvement of this application, the reinforcing filament is made of plastic fiber material, and an anti-detachment adhesive is coated between the intertwined part and the reinforcing filament. The anti-detachment adhesive further improves the fixing effect between the intertwined part and the reinforcing filament, and effectively reduces the detachment of the reinforcing filament.

[0012] As a further improvement of this application, an embedding groove is pressed onto the outer surface of the two intertwined portions, and the anti-detachment adhesive is engaged with the embedding groove. By combining the anti-detachment adhesive with the embedding groove, the adhesion effect between the anti-detachment adhesive and the intertwined portions is effectively improved.

[0013] In summary, the spiral knots at both ends of the steel fiber body of this invention have better structural stability than traditional bending methods. Furthermore, the spiral knots have a larger volumetric space, making them easier to integrate with concrete. When the spiral knot is subjected to tensile unwinding deformation, the steel fiber sub-body effectively prevents this deformation by restricting the tandem rings, thus significantly improving the deformation resistance of the spiral knot. The torsion processing of the spiral knot and the intertwined portion is simple, and the irregularly shaped concrete triangular terminal steel fiber is finally obtained through shearing. The entire production process is automated, effectively improving production efficiency and facilitating widespread use. Attached Figure Description

[0014] Figure 1 This is a perspective structural diagram of the first embodiment of this application; Figure 2 This is an exploded perspective view of the steel fiber body and steel fiber sub-body according to the first embodiment of this application; Figure 3 This is a demonstration diagram of the twisting and intertwining of the intertwined portion according to the first embodiment of this application; Figure 4 This is a diagram illustrating the torsion of the spiral knot according to the first embodiment of this application. Figure 5 This diagram illustrates the transmission motion between the steel fiber body and the steel fiber sub-body according to the first embodiment of this application. Figure 6 This is a perspective structural diagram of the second embodiment of this application; Figure 7 This is a demonstration diagram of the intertwined portion clamping the reinforcing wire according to the second embodiment of this application; Figure 8 This is a cross-sectional view of the intertwined portion, reinforcing filament, and anti-detachment adhesive according to the second embodiment of this application; Figure 9 This is a three-dimensional structural diagram of the intertwined portion and reinforcing wire according to the second embodiment of this application; Figure 10 This is a three-dimensional structural diagram of the embedding groove according to the second embodiment of this application.

[0015] Explanation of the labels in the diagram: 101. Steel fiber main body; 102. Steel fiber sub-body; 103. Intertwined part; 104. Spiral knot; 105. Series ring; 106. Bending part; 201. Reinforcing filament; 202. Anti-detachment gel; 203. Embedded groove. Detailed Implementation

[0016] The two embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0017] First implementation method: Figures 1 to 5The diagram shows a steel fiber for an irregularly shaped concrete triangular terminal, comprising a steel fiber body 101 and a steel fiber sub-body 102 spirally intertwined with the steel fiber body 101. The middle part of the steel fiber body 101 and the middle part of the steel fiber sub-body 102 are both configured as intertwined portions 103, and the two intertwined portions 103 are spirally intertwined and in contact. Both ends of the steel fiber body 101 are fixedly connected with a spiral knot 104, and the top of the spiral knot 104 is fixedly connected with a series ring 105. Both ends of the steel fiber sub-body 102 are respectively inserted into the series ring 105. The production process of steel fibers includes the following steps: S1: Steel raw materials are drawn into steel wires through a drawing die to prepare steel fiber body 101 and steel fiber sub-body 102. The steel wires are transported by a transmission roller. S2: Using a vertical twisting device, hook the steel wire of the steel fiber body 101 and twist it at equal intervals to form a spiral knot 104. The part of the top of the spiral knot 104 that contacts the twisting device forms a series ring 105. S3: Cut the steel wires used to prepare the steel fiber sub-body 102 into segments to obtain the initial steel wire body of the steel fiber sub-body 102. Transfer the steel wires used to prepare the steel fiber body 101 after step S2 to the initial steel wire body of the steel fiber sub-body 102 to the joint, so that the initial steel wire body of the steel fiber sub-body 102 passes through the tandem ring 105. S4: Using a transverse twisting device, first clamp the steel wire of the steel fiber main body 101 and the initial steel wire of the steel fiber sub-body 2 prepared after step S3, and then perform equidistant twisting and intertwining to achieve the spiral intertwining of the intertwined part 103 of the steel fiber main body 101 and the steel fiber sub-body 102. S5: The steel wires of the steel fiber body 101 prepared after twisting and intertwining in step S4 are cut to finally obtain the steel fiber of the irregular concrete triangular terminal. In step S2, the spiral knot 104 has two turns, and the inner diameter of the connecting ring 105 is larger than the outer diameter of the steel wire used to prepare the steel fiber sub-body 102, thus achieving the spiral forming of the spiral knot 104. This facilitates the bonding of the spiral knot 104 with concrete, and the connecting ring 105 allows the steel fiber sub-body 102 to pass through. In step S4, the intertwined portion 103 has two and a half turns, and the intertwined portion 103 and the spiral knot 104 are formed from the same steel wire. The spiral intertwining of the intertwined portion 103 achieves the intertwining and bonding of the steel fiber body 101 and the steel fiber sub-body 102, and then forms a triangle with the spiral knot 104. The steel fiber sub-body 102 has a bending portion 106 at both ends. The bending start end of the bending portion 106 contacts the tandem ring 105. By setting the bending portion 106, the tandem ring 105 is effectively prevented from sliding to the outer end of the steel fiber sub-body 102. In step S5, during the shearing of the steel wire of the steel fiber body 101, the end of the steel fiber sub-body 102 is aligned with the shearing position of the steel fiber body 101. The shearing tool simultaneously presses the end of the steel fiber sub-body 102, so that the end of the steel fiber sub-body 102 forms the bending portion 106. In the aforementioned irregularly shaped concrete triangular terminal steel fiber, the two ends of the steel fiber body 101 are twisted in a spiral manner to obtain a spiral knot 104. Compared with the traditional bending method, the spiral knot 104 has better structural stability and a larger volume space, making it easier to bond with concrete. By using the steel fiber sub-body 102 to connect the series ring 105, when the spiral knot 104 is subjected to tensile force and unwinds, the steel fiber sub-body 102 restricts the series ring 105, thereby effectively preventing the unwinding deformation of the spiral knot 104, and thus effectively improving the deformation resistance of the spiral knot 104. The steel fiber main body 101 and the steel fiber sub-body 102 are intertwined and bonded through the intertwining part 103, which effectively improves the structural stability of the steel fiber main body 101 and the steel fiber sub-body 102. The steel fiber main body 101 and the steel fiber sub-body 102 then form a triangular shape with the spiral knot 104, which further effectively improves the bonding effect with concrete. In the preparation of the steel fiber body 101 and the steel fiber sub-body 102, the steel wires used can be transported by the transmission rollers. During the transmission process, the equidistant twisting of the spiral knot 104 is completed, the steel wires for preparing the steel fiber sub-body 102 are automatically passed through the series ring 105, and the spiral intertwining of the steel fiber body 101 and the steel fiber sub-body 102 is performed. Finally, the irregular concrete triangular terminal steel fiber is obtained by shearing. The whole process is automated, which effectively improves production efficiency and facilitates use and promotion.

[0018] Second implementation method: Compared to the first embodiment, the main addition is a reinforcing wire 201, the specific addition structure is as follows, and the rest of the structure is the same as the first embodiment.

[0019] Figures 6 to 10 As shown, a reinforcing wire 201 is clamped between the two intertwined portions 103. The length of the reinforcing wire 201 is the same as the height of the spiral knot 104. By clamping the reinforcing wire 201 between the intertwined portions 103, the bonding effect between the intertwined portions 103 and the concrete is effectively improved. The reinforcing wire 201 is made of plastic fiber material. An anti-detachment adhesive 202 is coated between the intertwined portions 103 and the reinforcing wire 201. The anti-detachment adhesive 202 further improves the fixing effect between the intertwined portions 103 and the reinforcing wire 201, effectively reducing the possibility of the reinforcing wire 201 falling off. An embedding groove 203 is pressed on the outer surface of the two intertwined portions 103. The anti-detachment adhesive 202 is engaged with the embedding groove 203. By combining the anti-detachment adhesive 202 with the embedding groove 203, the adhesion effect between the anti-detachment adhesive 202 and the intertwined portions 103 is effectively improved. When the steel fiber body 101 and the steel fiber sub-body 102 are spirally twisted in the intertwined part 103, a reinforcing wire 201 is inserted between the steel fiber body 101 and the steel fiber sub-body 102 to be twisted. The reinforcing wire 201 is simultaneously clamped between the two intertwined parts 103, and the reinforcing wire 201 effectively improves the bonding effect between the intertwined part 103 and the concrete. Anti-debonding coating is pre-sprayed onto the steel fiber main body 101 and steel fiber sub-body 102 to be twisted. Then, when the reinforcing wire 201 is clamped and fixed by the two intertwined parts 103, the anti-debonding coating combines the intertwined parts 103 and the reinforcing wire 201 and solidifies to form an anti-debonding body 202. By combining the anti-debonding body 202 with the embedded groove 203, the adhesion effect of the anti-debonding body 202 and the intertwined parts 103 is effectively improved, thereby effectively reducing the detachment of the reinforcing wire 201. Compared to the first embodiment, by clamping and fixing the reinforcing wire 201 between the two intertwined portions 103, the reinforcing wire 201 effectively improves the bonding effect between the intertwined portions 103 and the concrete, and further effectively improves the bonding effect between the steel fiber of the irregular concrete triangular terminal and the concrete.

[0020] In light of current practical needs, the above-described embodiments adopted in this application are not limited to these. Any changes made within the scope of knowledge possessed by those skilled in the art without departing from the concept of this application still fall within the protection scope of this invention.

Claims

1. A type of steel fiber for irregularly shaped concrete triangular terminals, characterized in that: The device includes a steel fiber body (101) and a steel fiber sub-body (102) that is spirally intertwined with the steel fiber body (101). The middle part of the steel fiber body (101) and the middle part of the steel fiber sub-body (102) are both configured as intertwined parts (103). The two intertwined parts (103) are spirally intertwined and in contact. Both ends of the steel fiber body (101) are fixedly connected with a spiral knot (104). The top of the spiral knot (104) is fixedly connected with a series ring (105). Both ends of the steel fiber sub-body (102) are respectively inserted into the series ring (105).

2. The steel fiber for an irregularly shaped concrete triangular terminal according to claim 1, characterized in that: The production process of the steel fiber includes the following steps: S1: Steel raw materials are drawn into steel wires through a drawing die to prepare steel fiber body (101) and steel fiber subbody (102), and the steel wires are transported through a transmission roller; S2: Using a vertical twisting device, hook the steel wire used to prepare the steel fiber body (101) and twist it at equal intervals to form a spiral knot (104). The top of the spiral knot (104) and the part in contact with the twisting device form a series ring (105). S3: Cut the steel wires used to prepare the steel fiber sub-body (102) into segments to obtain the initial steel wire body of the steel fiber sub-body (102). Transfer the steel wires used to prepare the steel fiber body (101) after step S2 to the initial steel wire body of the steel fiber sub-body (102) so that the initial steel wire body of the steel fiber sub-body (102) passes through the tandem ring (105). S4: Using a transverse twisting device, first clamp the steel wire of the steel fiber main body (101) and the initial steel wire of the steel fiber sub-body (102) prepared after step S3, and then perform equidistant twisting and intertwining to realize the spiral intertwining of the intertwined part (103) of the steel fiber main body (101) and the steel fiber sub-body (102); S5: The steel wires of the steel fiber body (101) prepared after twisting and intertwining in step S4 are cut to finally obtain the steel fiber of the irregular concrete triangular terminal.

3. The steel fiber for an irregularly shaped concrete triangular terminal according to claim 2, characterized in that: In step S2, the spiral knot (104) has two turns, and the inner diameter of the tandem ring (105) is larger than the outer diameter of the steel wire used to prepare the steel fiber subbody (102).

4. The steel fiber for an irregularly shaped concrete triangular terminal according to claim 2, characterized in that: In step S4, the number of twists in the intertwined part (103) is two and a half, and the intertwined part (103) and the spiral knot (104) are formed from the same steel wire.

5. The steel fiber for an irregularly shaped concrete triangular terminal according to claim 1, characterized in that: Both ends of the steel fiber subbody (102) are provided with bending portions (106), and the bending start end of the bending portion (106) is in contact with the tandem ring (105).

6. The steel fiber for an irregularly shaped concrete triangular terminal according to claim 1, characterized in that: A reinforcing filament (201) is clamped between the two intertwined portions (103), the length of which is the same as the height of the spiral knot (104).

7. The steel fiber for an irregularly shaped concrete triangular terminal according to claim 6, characterized in that: The reinforcing filament (201) is made of plastic fiber material, and an anti-detachment adhesive (202) is coated between the intertwined portion (103) and the reinforcing filament (201).

8. The steel fiber for an irregularly shaped concrete triangular terminal according to claim 7, characterized in that: An embedding groove (203) is pressed onto the outer surface of the two intertwined portions (103), and the anti-detachment adhesive (202) is engaged with the embedding groove (203).

Images