Special-shaped concrete triangular terminal steel fiber

Abstract

The present application relates to a kind of special-shaped concrete triangular terminal steel fiber applied to steel fiber technical field, including steel fiber main body, steel fiber auxiliary body, interlacing part, spiral knot and series ring, the spiral knot of the steel fiber main body both ends is more stable than the structure stability of traditional bending mode, and the body space of spiral knot is larger, more easily combined with concrete, and when spiral knot is deformed by tension uncoiling, steel fiber auxiliary body is limited by series ring, thereby effectively preventing the uncoiling deformation of spiral knot, in turn effectively improve the deformation resistance effect of spiral knot, then the torsion processing process of spiral knot and interlacing part is simple, finally special-shaped concrete triangular terminal steel fiber is obtained by shearing, full-automation production, effectively improve production efficiency, it is convenient to use and promote.

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.

[0006] The production process of steel fibers includes the following steps:

[0007] 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.

[0008] 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.

[0009] 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.

[0010] 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.

[0011] S5: Cut the steel wires of the steel fiber body prepared after twisting and intertwining in step S4 to finally obtain the steel fiber of the irregular concrete triangular terminal.

[0012] 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.

[0013] 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.

[0014] 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.

[0015] 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.

[0016] 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.

[0017] 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.

[0018] 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.

[0019] 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

[0020] Figure 1 This is a perspective structural diagram of the first embodiment of this application;

[0021] 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;

[0022] Figure 3 This is a demonstration diagram of the twisting and intertwining of the intertwined portion according to the first embodiment of this application;

[0023] Figure 4 This is a diagram illustrating the torsion of the spiral knot according to the first embodiment of this application;

[0024] 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.

[0025] Figure 6 This is a perspective structural diagram of the second embodiment of this application;

[0026] Figure 7 This is a demonstration diagram of the intertwined portion clamping the reinforcing wire according to the second embodiment of this application;

[0027] 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;

[0028] Figure 9 This is a three-dimensional structural diagram of the intertwined portion and reinforcing wire according to the second embodiment of this application;

[0029] Figure 10 This is a three-dimensional structural diagram of the embedding groove according to the second embodiment of this application.

[0030] Explanation of the labels in the diagram:

[0031] 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

[0032] The two embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0033] First implementation method:

[0034] Figures 1 to 5 The 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.

[0035] The production process of steel fibers includes the following steps:

[0036] 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.

[0037] S2: Using a vertical twisting device, hook the steel wire of the steel fiber body 101, and twist it at equal intervals on the steel wire 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] Second implementation method:

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] 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.

[0051] 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 profiled concrete triangular end terminal steel fibre characterised in that: The steel fiber includes a steel fiber main body (101) and a steel fiber auxiliary body (102) spirally intertwined with the steel fiber main body (101), the middle part of the steel fiber main body (101) and the middle part of the steel fiber auxiliary body (102) are provided as intertwined parts (103), the two intertwined parts (103) are spirally intertwined and contacted, the two ends of the steel fiber main body (101) are fixedly connected with spiral knots (104), the top of the spiral knot (104) is fixedly connected with a series ring (105), and the two ends of the steel fiber auxiliary body (102) are respectively inserted with the series ring (105).

2. A profiled concrete triangular end terminal steel fibre as claimed in claim 1, wherein: The production process of the steel fiber includes the following steps: S1: the steel raw material is subjected to wire drawing treatment through a wire drawing die to obtain a steel wire for preparing the steel fiber main body (101) and the steel fiber auxiliary body (102), and the steel wire is transmitted through a transmission roller; S2: the steel wire for preparing the steel fiber main body (101) is hooked by a vertical twisting device, is twisted at equal intervals on the steel wire to form a spiral knot (104), and the top of the spiral knot (104) forms a series ring (105) in contact with the twisting device; S3: the steel wire for preparing the steel fiber auxiliary body (102) is cut and segmented to obtain a steel wire initial body of the steel fiber auxiliary body (102), and the steel wire for preparing the steel fiber main body (101) processed in step S2 is transmitted and intersected with the steel wire initial body of the steel fiber auxiliary body (102), so that the steel wire initial body of the steel fiber auxiliary body (102) passes through the series ring (105); S4: a horizontal twisting device is used to first clamp the steel wire for preparing the steel fiber main body (101) and the steel wire initial body of the steel fiber auxiliary body (102) processed in step S3, and then twist and intertwine at equal intervals to realize the spiral intertwining of the intertwined part (103) of the steel fiber main body (101) and the steel fiber auxiliary body (102); S5: the steel wire for preparing the steel fiber main body (101) after the twisting and intertwining in step S4 is cut, and finally a special-shaped concrete triangular terminal steel fiber is obtained.

3. A profiled concrete triangular end terminal steel fibre as claimed in claim 2, wherein: The twisting number of the spiral knot (104) in step S2 is two, and the inner diameter of the series ring (105) is greater than the outer diameter of the steel wire for preparing the steel fiber auxiliary body (102).

4. A profiled concrete triangular end terminal steel fibre as claimed in claim 2, wherein: The twisting number of the intertwined part (103) in step S4 is two and a half, and the intertwined part (103) and the spiral knot (104) are formed by the same steel wire.

5. A profiled concrete triangular end terminal steel fibre as claimed in claim 1, wherein: The two ends of the steel fiber auxiliary body (102) are provided with bending parts (106), and the bending starting end of the bending part (106) is in contact with the series ring (105).

6. A profiled concrete triangular end terminal steel fibre as claimed in claim 1, wherein: The two intertwined parts (103) are clamped with a reinforcing wire (201), and the length of the reinforcing wire (201) is the same as the height of the spiral knot (104).

7. A profiled concrete triangular end terminal steel fibre as claimed in claim 6, wherein: The reinforcing wire (201) is made of plastic fiber material, and the intertwined part (103) and the reinforcing wire (201) are coated with a anti-sticking body (202).

8. A profiled concrete triangular end terminal steel fibre as claimed in claim 7, wherein: The outer surfaces of the two intertwined parts (103) are pressed with embedded grooves (203), and the anti-sticking body (202) is clamped with the embedded grooves (203).

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