Pre-tensioning method broken line type prestress forming device

Abstract

The utility model relates to a pre-tensioning method broken line type prestress forming device, and belongs to the technical field of tensioning equipment. Comprising a bending support and a connecting fastener, the bending support is used for controlling bending of prestressed steel bars, and the connecting fastener is used for fixing the bending support. The utility model aims to overcome the arrangement of bending broken lines of pre-tensioning prestressed reinforcements, ensure that the prestressed reinforcements can be smoothly transited at the bending parts, and avoid the problems of complex procedures and high cost caused by the traditional post-tensioning production process.

Description

Technical Field

[0001] The utility model relates to a pre-tensioning broken-line prestressed forming device, belonging to the technical field of tensioning equipment. Background Art

[0002] Traditional prestressed concrete production processes primarily utilize pre-tensioning and post-tensioning methods. Pre-tensioning involves stretching and securing prestressed steel bars before concrete pouring. Once the concrete hardens, the steel bars are prestressed. However, the traditional pre-tensioning method is limited in its applicability to structural design, as prestressed steel bars cannot be arranged in curved, broken-line configurations. This makes it difficult to meet the needs of some specialized structures.

[0003] To overcome the limitations of the pre-tensioning method, the post-tensioning method was developed. Post-tensioning involves tensioning the prestressed steel bars after concrete pouring and then performing secondary grouting to secure them. Compared to the pre-tensioning method, the post-tensioning method is more adaptable to various structural forms. However, the construction process of the post-tensioning method is more complex, requiring a series of steps such as laying out pipes, setting anchors, and performing secondary grouting. The post-tensioning method has cumbersome production processes and high quality standards, resulting in high production costs and long production cycles, limiting its widespread application in large-scale structural engineering. Utility Model Content

[0004] The utility model proposes a prestressed steel forming device of pre-tensioning method with a broken line shape, which aims to overcome the bent broken line arrangement of prestressed steel bars in the pre-tensioning method, ensure that the prestressed steel bars can smoothly transition at the rotating shaft, and avoid the complex process and high cost problems brought about by the traditional post-tensioning production process.

[0005] The technical solution adopted by the utility model is a pre-tensioned broken line prestressed forming device, which includes a bending bracket and a connecting fastener, wherein the bending bracket is used to control the bending of the prestressed steel bar, and the connecting fastener is used to fix the bending bracket.

[0006] Furthermore, the bending bracket includes a load-bearing plate, an insertion rod and a blocking rod, the insertion rod passes through the load-bearing plate, and the blocking rods are located at both ends of the insertion rod.

[0007] Furthermore, a rotating shaft is sleeved on the insertion rod, and the rotating shaft is located on both sides of the force-bearing plate. Under the action of external force, the rotating shaft rotates with the insertion rod as the axis.

[0008] Furthermore, the connecting fastener includes a screw and a nut, one end of the screw is fixed on the load-bearing plate, and the nut is screwed on the other end of the screw.

[0009] Furthermore, the insertion rod is arranged perpendicular to the surface of the load-bearing plate.

[0010] Furthermore, a plurality of insertion rods are distributed at intervals on the force-bearing plate, and the insertion rods are parallel to each other.

[0011] Furthermore, the number of the load-bearing plates is 2.

[0012] Furthermore, the width of the force-bearing plate on the side close to the screw is smaller than that on the other side.

[0013] The present utility model discloses a prestressed forming device of a pre-tensioned folded line type, the beneficial effect of which is that it adopts a bending bracket and a connecting fastener structure, aiming to accurately control the bending process of the prestressed steel bar, and ensure that the prestressed steel bar forms the required folded line shape according to the design requirements. Through the combined design of the inserted rod, the rotating shaft and the load-bearing plate, under the action of external force, the rotating shaft rolls under the drive of the prestressed steel bar while controlling the bending of the prestressed steel bar. In addition, the fastening structure of the screw and the nut is used to fix the bending bracket on the mold, ensuring stability and safety during the tensioning process, while facilitating assembly and disassembly. The design of the retaining rod prevents the prestressed steel bar from detaching from the bending bracket. The present utility model overcomes the arrangement of the prestressed steel bar bending folded line of the pre-tensioned prestressed steel bar, ensuring that the prestressed steel bar can smoothly transition at the rotating shaft, while avoiding the complex process and high cost problems brought about by the traditional post-tensioning production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0015] Figure 1 Shown is a schematic structural diagram of Example 1 of the present utility model;

[0016] Figure 2 Shown is a schematic diagram of the main view of Example 1 of the present utility model;

[0017] Figure 3 Shown is a schematic diagram of the usage status of Example 1 of the utility model.

[0018] As shown in the figure: 1. Load-bearing plate; 2. Insert rod; 3. Stop rod; 4. Rotating shaft; 5. Screw; 6. Nut; 7. Mould; 8. Prestressed steel bar. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0020] In order to further understand the content of the utility model, this technical solution is further explained below in conjunction with specific implementation methods.

[0021] Example 1: Figures 1 to 3 As shown, this embodiment provides a pre-tensioned broken-line prestressed forming device, including a bending bracket and a connecting fastener, wherein the bending bracket is used to control the bending of the prestressed steel bar 8, and the connecting fastener is used to fix the bending bracket.

[0022] Specifically, the bending bracket includes a load-bearing plate 1, a rotating shaft 4, an insertion rod 2 and a blocking rod 3. There is a certain distance between the two load-bearing plates 1. Three insertion rods 2 are spaced apart on the load-bearing plate 1. The insertion rods 2 are arranged perpendicular to the plate surface of the load-bearing plate 1. The insertion rods 2 are parallel to each other. The rotating shaft 4 is sleeved on the insertion rod 2 and the rotating shaft 4 is located on both sides of the load-bearing plate 1. The blocking rods 3 are located at both ends of the insertion rod 2. The blocking rods 3 are used to prevent the prestressed steel bar 8 from detaching from the bending bracket. Under the action of external force, the rotating shaft 4 rotates with the insertion rod 2 as the axis.

[0023] The connecting fastener includes a screw 5 and a nut 6. One end of the screw 5 is fixed to the load-bearing plate 1 by welding, and the other end of the screw 5 passes through the mold 7 and is tightened and fixed by the nut 6.

[0024] On this basis, the width of the load-bearing plate 1 on the side close to the screw 5 is smaller than that on the other side, so as to reduce unnecessary costs.

[0025] In actual application, a screw hole is reserved at the bottom of the mold 7, and the other end of the screw rod 5 is passed through the screw hole and then tightened with the nut 6. The screw rod 5 and the nut 6 cooperate to fix the bending bracket to the bottom of the mold 7. Then, the prestressed steel bar 8 passes through the bottom of the rotating shaft 4 in sequence according to the specific positioning of the design drawing until it passes through the tensioning end mold of the mold 7. A clamp is set at the tensioning end mold position to start the tensioning work of the prestressed steel bar 8. Under the action of the tensioning jack, the prestressed steel bar 8 is bent and deformed at the position of the rotating shaft 4, ensuring that the prestressed steel bar 8 can smoothly transition at the rotating shaft 4, thereby realizing the arrangement of the pre-tensioning method of the broken line prestressing.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pre-tensioned folded line prestressed forming device, characterized in that: The invention comprises a bending bracket and a connecting fastener, wherein the bending bracket is used to control the bending of the prestressed steel bar (8), and the connecting fastener is used to fix the bending bracket. The bending bracket comprises a load-bearing plate (1), an inserting rod (2) and a retaining rod (3), wherein the inserting rod (2) passes through the load-bearing plate (1), and the retaining rod (3) is located at both ends of the inserting rod (2).

2. A pre-tensioning folded line prestressed forming device according to claim 1, characterized in that: A rotating shaft (4) is sleeved on the insertion rod (2), and the rotating shaft (4) is located on both sides of the force-bearing plate (1). Under the action of external force, the rotating shaft (4) rotates with the insertion rod (2) as the axis.

3. A pre-tensioning folded line prestressed forming device according to claim 1 or 2, characterized in that: The connecting fastener comprises a screw rod (5) and a nut (6), one end of the screw rod (5) is fixed on the load-bearing plate (1), and the nut (6) is screwed on the other end of the screw rod (5).

4. The pre-tensioning folded line prestressed forming device according to claim 1, characterized in that: The inserting rod (2) is arranged perpendicularly to the surface of the force-bearing plate (1).

5. The pre-tensioning folded line prestressed forming device according to claim 1, characterized in that: A plurality of insertion rods (2) are distributed at intervals on the load-bearing plate (1), and the insertion rods (2) are parallel to each other.

6. The pre-tensioning folded line prestressed forming device according to claim 1, characterized in that: The number of the load-bearing plates (1) is 2.

7. The pre-tensioning folded line prestressed forming device according to claim 1, characterized in that: The width of the force-bearing plate (1) on the side close to the screw rod (5) is smaller than that on the other side.

Images