A stirrup positioning device for steel cage fabrication

Abstract

This utility model belongs to the field of rebar cage fabrication and discloses a stirrup positioning device for rebar cage fabrication. It includes a detachably connected first positioning plate and a second positioning plate. The first positioning plate has a first limiting part for abutting the stirrup, and the second positioning plate has a second limiting part and a third limiting part for abutting the stirrup. The first, second, and third limiting parts are distributed on both sides of the vertical center line of the stirrup and spaced apart along the circumference of the stirrup to form a stable constraint on the stirrup. This utility model can improve the accuracy of stirrup positioning, thereby improving welding precision; it also improves construction efficiency and reduces labor intensity and labor costs. This utility model is applicable to construction projects requiring rebar cage fabrication for stirrup positioning.

Description

Technical Field

[0001] This utility model belongs to the field of steel cage manufacturing, specifically a stirrup positioning device for steel cage manufacturing. Background Technology

[0002] As the core load-bearing component of a concrete structure, the quality of the reinforcing cage directly affects the overall structural safety and durability after concrete pouring. The formation of the reinforcing cage requires the welding and fixing of the main reinforcement bars (i.e., longitudinal reinforcing bars) and stirrups (i.e., closed ring reinforcement bars). The main reinforcement bars, as the primary load-bearing components, bear the axial load of the structure; the stirrups restrain the lateral deformation of the main reinforcement bars, enhancing the overall stability of the structure. Therefore, the welding precision of the main reinforcement bars and stirrups, especially the accuracy of the stirrup positioning, is a key factor determining the quality of the reinforcing cage.

[0003] The fabrication process of a steel reinforcement cage involves first adjusting the position of the main reinforcement bars, and then temporarily fixing and welding the stirrups. However, existing technologies have the following drawbacks in the temporary fixing stage of the stirrups: First, the temporary fixing of the stirrups mainly relies on manual welding. Due to the limitations of workers' experience and physical strength, the stirrups are prone to positional deviations due to unstable support or shaking, resulting in the welding position of the stirrups and main reinforcement bars not meeting design requirements. This reduces the overall load-bearing capacity of the steel reinforcement cage and may even affect the seismic performance and service life of the structure. Second, manual welding requires at least 2-3 workers to work together, such as one person supporting the stirrups, one person assisting in the adjustment, and one person welding. This results in low construction efficiency, high labor intensity for workers, and high labor costs. Utility Model Content

[0004] To address the aforementioned shortcomings in the existing technology, this utility model aims to provide a stirrup positioning device for steel cage fabrication, thereby improving the accuracy of stirrup positioning, increasing construction efficiency, and reducing labor intensity and labor costs.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A stirrup positioning device for reinforcing cage fabrication includes a detachably connected first positioning plate and a second positioning plate. The first positioning plate is provided with a first limiting part for abutting the stirrup, and the second positioning plate is provided with a second limiting part and a third limiting part for abutting the stirrup. The first limiting part, the second limiting part and the third limiting part are distributed on both sides of the vertical center line of the stirrup and are arranged at intervals along the circumference of the stirrup to form a stable constraint on the stirrup.

[0007] As a limitation of this utility model: the first positioning plate is provided with a first strip hole extending along its axial direction, the second positioning plate is provided with a second strip hole extending along its axial direction, and the first fastener passes through the first strip hole and the second strip hole to fix the first positioning plate and the second positioning plate.

[0008] As a further limitation of this utility model: the first limiting part and the first positioning plate are detachably connected, the first limiting part is provided with a third strip hole extending along its axial direction, and the second fastener passes through the first strip hole and the third strip hole to adjust the extension length of the first limiting part relative to the first positioning plate.

[0009] Both the second limiting part and the third limiting part are detachably connected to the second positioning plate. The second limiting part is provided with a fourth strip-shaped hole extending along its axial direction. The third fastener passes through the second strip-shaped hole and the fourth strip-shaped hole to adjust the extension length of the second limiting part relative to the second positioning plate. The third limiting part is provided with a fifth strip-shaped hole extending along its axial direction. The fourth fastener passes through the second strip-shaped hole and the fifth strip-shaped hole to adjust the extension length of the third limiting part relative to the second positioning plate.

[0010] As a further limitation of this utility model: the first limiting part, the second limiting part and the third limiting part have the same structure. The first limiting part is an L-shaped plate, including a long straight plate and a short straight plate that are fixedly connected. The third strip hole is provided on the long straight plate. The fourth strip hole is provided on the long straight plate of the second limiting part, and the fifth strip hole is provided on the long straight plate of the third limiting part.

[0011] The short straight plates of the first limiting part, the second limiting part, and the third limiting part together constrain the abutment of the stirrup.

[0012] As a further limitation of this utility model: the first positioning plate and the second positioning plate are arranged vertically, and the line connecting the abutting point of the first limiting part, the abutting point of the second limiting part and the abutting point of the third limiting part forms a right triangle, with the right angle facing the center of the stirrup.

[0013] As another limitation of this utility model, it also includes a base, which has an I-shaped structure on the horizontal projection plane, and the first positioning plate is vertically fixed on the base.

[0014] As a further limitation of this utility model: the first positioning plate, the second positioning plate, the first limiting part, the second limiting part, the third limiting part and the base are all made of steel profiles, and the surface of the steel profiles is coated with a zinc coating.

[0015] By adopting the above technical solution, the beneficial effects achieved by this utility model compared with the prior art are as follows:

[0016] (1) This utility model includes a detachably connected first positioning plate and a second positioning plate. The first positioning plate is provided with a first limiting part for abutting the stirrup, and the second positioning plate is provided with a second limiting part and a third limiting part for abutting the stirrup. The first limiting part, the second limiting part and the third limiting part are scattered on both sides of the vertical center line of the stirrup and are arranged at intervals along the circumference of the stirrup to form a stable constraint on the stirrup. In implementation, this device is placed on the main reinforcement, and the stirrup is temporarily fixed by the first limiting part, the second limiting part and the third limiting part before welding. Compared with manual welding, this utility model improves the accuracy of stirrup positioning, thereby improving welding accuracy; and also improves construction efficiency and reduces labor intensity and labor cost.

[0017] (2) In this utility model, the first limiting part and the first positioning plate are detachably connected through the first strip hole, the third strip hole, and the second fastener, which is used to adjust the extension length of the first limiting part relative to the first positioning plate; similarly, the second limiting part and the second positioning plate are detachably connected through the second strip hole, the fourth strip hole, and the third fastener, which is used to adjust the extension length of the second limiting part relative to the second positioning plate; the third limiting part and the second positioning plate are detachably connected through the second strip hole, the fifth strip hole, and the fourth fastener, which is used to adjust the extension length of the third limiting part relative to the second positioning plate. By adjusting the extension length of the first limiting part, the second limiting part, and the third limiting part, stirrups of different diameters can be adapted, thus expanding the application range.

[0018] In summary, this utility model can improve the accuracy of stirrup positioning, thereby improving welding precision; it also improves construction efficiency and reduces labor intensity and labor costs; this utility model is applicable to construction projects that require the fabrication of steel cages for the positioning of stirrups. Attached Figure Description

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0020] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present utility model;

[0021] Figure 2 This is a three-dimensional structural diagram of an embodiment of the present invention from another perspective;

[0022] Figure 3 This is a three-dimensional structural diagram of the first limiting part in an embodiment of the present utility model;

[0023] Figure 4 This is a top view of the base structure in an embodiment of the present utility model;

[0024] Figure 5 This is a three-dimensional structural diagram of the first application state of this utility model (the main rib is located on the base).

[0025] Figure 6 This is a schematic diagram of the main view structure of the first application state of this utility model embodiment;

[0026] Figure 7 This is a three-dimensional structural diagram of the second application state of this utility model embodiment (the base is located on the main rib).

[0027] In the diagram: 1-First positioning plate, 2-Second positioning plate, 3-First limiting part, 4-Second limiting part, 5-Third limiting part, 6-First strip hole, 7-Second strip hole, 8-Third strip hole, 9-Fourth strip hole, 10-Fifth strip hole, 11-First fastener, 12-Second fastener, 13-Third fastener, 14-Fourth fastener, 15-Long straight plate, 16-Short straight plate, 17-Base, 18-Stirrup, 181-Vertical center line, 182-Horizontal center line, 19-Main reinforcement. Detailed Implementation

[0028] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and do not constitute a limitation thereof.

[0029] The directional terms or positional relationships such as "up," "down," "left," "right," "front," and "back" used in the embodiments are based on the drawings in this utility model specification. Figure 1 The orientation relationships are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component must have a specific orientation, or that it must be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the content protected by this utility model.

[0030] like Figures 1 to 7 As shown, this embodiment includes a detachably connected first positioning plate 1 and a second positioning plate 2. The first positioning plate 1 is provided with a first limiting part 3 for abutting against the stirrup 18. The second positioning plate 2 is provided with a second limiting part 4 and a third limiting part 5 for abutting against the stirrup 18. The first limiting part 3, the second limiting part 4 and the third limiting part 5 are distributed on both sides of the vertical center line 181 of the stirrup 18 and are arranged at intervals along the circumference of the stirrup 18 to form a stable constraint on the stirrup 18.

[0031] I. First positioning plate 1, second positioning plate 2;

[0032] In this embodiment, both the first positioning plate 1 and the second positioning plate 2 are made of structural steel, such as Figure 1 , 2As shown, in this embodiment, the channel steel is made of channel steel and the surface of the channel steel is coated with zinc, which effectively improves the corrosion resistance of the channel steel and extends its service life.

[0033] In this embodiment, the first positioning plate 1 and the second positioning plate 2 are arranged vertically, such as... Figure 1 As shown, the first positioning plate 1 has its axial direction along the up-down direction, and the second positioning plate 2 has its axial direction along the left-right direction. The first positioning plate 1 and the second positioning plate 2 are detachably connected, specifically as follows: the first positioning plate 1 is provided with a first strip-shaped hole 6 extending along its axial direction, and the second positioning plate 2 is provided with a second strip-shaped hole 7 extending along its axial direction. That is, the first strip-shaped hole 6 extends along the up-down direction, and the second strip-shaped hole 7 extends along the left-right direction. The first fastener 11 passes through the first strip-shaped hole 6 and the second strip-shaped hole 7 to fix the first positioning plate 1 and the second positioning plate 2. In this embodiment, the first fastener 11 adopts a combination of bolt and nut. After the bolt passes through the first strip-shaped hole 6 and the second strip-shaped hole 7, it is tightened and fixed by the nut. The nuts are not shown in the figure.

[0034] The relative position between the first positioning plate 1 and the second positioning plate 2 can be adjusted by nuts and bolts to precisely fit the stirrups 18 of different sizes.

[0035] II. First limiting part 3;

[0036] like Figure 1-3 As shown, the first limiting part 3 is detachably connected to the first positioning plate 1. The first limiting part 3 is provided with a third strip hole 8 extending along its axial direction (i.e., the up and down direction). The extension length of the first limiting part 3 relative to the first positioning plate 1 is adjusted by using the second fastener 12 passing through the first strip hole 6 and the third strip hole 8.

[0037] Specifically, such as Figure 2 , 3 As shown, the first limiting part 3 is an L-shaped steel plate, including a long straight plate 15 and a short straight plate 16 fixedly connected together. The third strip-shaped hole 8 is provided on the long straight plate 15. The short straight plate 16 of the first limiting part 3 is used to abut the top of the stirrup 18. The second fastener 12 here also adopts a combination of bolt and nut. The bolt passes through the first strip-shaped hole 6 and the third strip-shaped hole 8 and is then tightened and fixed by the nut. When it is necessary to adjust the upward extension length of the first limiting part 3, loosen the nut, move the L-shaped steel plate to the appropriate position, and then tighten the nut.

[0038] III. Second limiting part 4;

[0039] like Figure 1 , 2The second limiting part 4 is detachably connected to the second positioning plate 2. The second limiting part 4 is provided with a fourth strip hole 9 extending along its axial direction (i.e., left and right direction). The third fastener 13 passes through the second strip hole 7 and the fourth strip hole 9 to adjust the extension length of the second limiting part 4 relative to the second positioning plate 2.

[0040] Specifically, the second limiting part 4 has the same structure as the first limiting part 3, also including a long straight plate 15 and a short straight plate 16 fixedly connected. The fourth strip-shaped hole 9 is provided on the long straight plate 15 of the second limiting part 4, and the short straight plate 16 of the second limiting part 4 is used to abut the left end of the stirrup 18. The third fastener 13 here also adopts a combination of bolt and nut. The bolt passes through the second strip-shaped hole 7 and the fourth strip-shaped hole 9 and is then tightened and fixed by the nut. When it is necessary to adjust the leftward extension length of the second limiting part 4, loosen the nut, move the L-shaped steel plate to the appropriate position, and then tighten the nut.

[0041] IV. Third limiting part 5;

[0042] like Figure 1 , 2 As shown, the third limiting part 5 is detachably connected to the second positioning plate 2. The third limiting part 5 is provided with a fifth strip hole 10 extending along its axial direction (i.e., left and right direction). The fourth fastener 14 passes through the second strip hole 7 and the fifth strip hole 10 to adjust the extension length of the third limiting part 5 relative to the second positioning plate 2.

[0043] Specifically, the third limiting part 5 has the same structure as the first limiting part 3, and also includes a long straight plate 15 and a short straight plate 16 fixedly connected. The fifth strip hole 10 is provided on the long straight plate 15 of the third limiting part 5, and the short straight plate 16 of the third limiting part 5 is used to abut the right end of the stirrup 18. Here, the fourth fastener 14 also adopts a combination of bolt and nut. The bolt passes through the second strip hole 7 and the fifth strip hole 10 and is then tightened and fixed by the nut. When it is necessary to adjust the rightward extension length of the third limiting part 5, loosen the nut, move the L-shaped steel plate to the appropriate position, and then tighten the nut.

[0044] The short straight plate 16 of the first limiting part 3, the short straight plate 16 of the second limiting part 4, and the short straight plate 16 of the third limiting part 5 all extend forward. The three short straight plates 16 abut against the stirrup 18 to form a stable constraint, preventing the stirrup 18 from shifting in the horizontal or vertical direction, improving the positioning accuracy of the stirrup 18, and thus ensuring the accuracy of subsequent welding with the main reinforcement 19.

[0045] like Figure 1 , 6As shown, the first limiting part 3, the second limiting part 4, and the third limiting part 5 are distributed on both sides of the vertical center line 181 of the stirrup 18 and are arranged at intervals along the circumference of the stirrup 18 to form a stable constraint on the stirrup 18. In this embodiment, the first positioning plate 1 and the second positioning plate 2 are arranged vertically. The first positioning plate 1 is located on the vertical center line 181 of the stirrup 18, and the second positioning plate 2 is located on the horizontal center line 182 of the stirrup 18. At this time, the first limiting part 3 is located at the top of the stirrup 18 to restrict the stirrup 18 from moving upward; the second limiting part 4 is located at the leftmost end of the stirrup 18, and the third limiting part 5 is located at the rightmost end of the stirrup 18 to restrict the stirrup 18 from moving left and right. In other words, the line connecting the contact point A of the first limiting part 3, the contact point B of the second limiting part 4, and the contact point C of the third limiting part 5 forms a right triangle, with the right angle pointing towards the center of the stirrup 18.

[0046] In this embodiment, the first limiting part 3, the second limiting part 4, and the third limiting part 5 are all made of steel profiles, and the surface of the steel profiles is coated with a zinc coating, which effectively improves the corrosion resistance of the channel steel and extends its service life.

[0047] It should be added that, such as Figure 2 , 3 As shown, the third strip hole 8, the fourth strip hole 9, and the fifth strip hole 10 extend to the ends of the first limiting part 3, the second limiting part 4, and the third limiting part 5, respectively. That is, the ends of the first limiting part 3, the second limiting part 4, and the third limiting part 5 are all notched. In addition, in this embodiment, the edges of the first strip hole 6, the second strip hole 7, the third strip hole 8, the fourth strip hole 9, and the fifth strip hole 10 are not straight lines, but wavy lines, in order to adapt to the outer contour of the screw in the bolt and thus fit more closely.

[0048] V. Base 17;

[0049] like Figure 1 , 2 As shown, this embodiment also includes a base 17, on which the first positioning plate 1 is vertically fixed. The base 17 is made of shaped steel. The base 17 includes three angle steels, which are welded and fixed, forming an I-shaped structure on the horizontal projection plane. (See attached image.) Figure 4 Furthermore, all three angle steel sections are coated with zinc, which effectively improves the corrosion resistance of the channel steel and extends its service life.

[0050] In actual fabrication of the reinforcing cage, multiple stirrups 18 need to be welded at intervals along the length of the main reinforcement 19 (i.e., the front and rear directions). In this embodiment, the first positioning plate 1 is vertically fixed on the base 17. When in use... Figure 7As shown, the base 17 is placed above the main reinforcement 19. The stirrup 18 is temporarily fixed using the first limiting part 3, the second limiting part 4, and the third limiting part 5 before welding begins. After the current stirrup 18 is welded, the base 17 is moved to the next position where a stirrup 18 needs to be welded. The stirrup 18 is then temporarily fixed using the first limiting part 3, the second limiting part 4, and the third limiting part 5 before welding.

[0051] When using this embodiment, as Figure 7 As shown, the device is placed on the main reinforcement 19, and the stirrup 18 to be welded is placed at the first positioning plate 1 and the second positioning plate 2. The stirrup 18 is temporarily fixed by the first limiting part 3, the second limiting part 4, and the third limiting part 5, and then welded. Since the multiple stirrups 18 to be welded in the same reinforcement cage are of the same size, it is only necessary to adjust the extension length of the first limiting part 3, the second limiting part 4, and the third limiting part 5 once. After the current stirrup 18 is welded, the base 17 is moved to the position of the next stirrup 18 to be welded.

[0052] If a different size steel cage is to be fabricated, the extension lengths of the first limiting part 3, the second limiting part 4, and the third limiting part 5 need to be adjusted to a size that can hold the stirrup 18 in place. It should be noted that this device can also be used with the main reinforcing bar 19 placed above the base 17, such as... Figure 5 , 6 As shown, the welding of stirrup 18 and main reinforcement 19 can also be completed.

[0053] This embodiment solves the problem that when welding manually, unstable support or shaking can cause positional deviations, resulting in the welding positions of stirrups 18 and main bars 19 not meeting design requirements. It improves the positioning accuracy of stirrups 18, thereby improving welding precision, and also increases construction efficiency while reducing labor intensity and labor costs.

[0054] It should be noted that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A stirrup positioning device for steel cage fabrication, characterized in that, It includes a detachably connected first positioning plate and a second positioning plate. The first positioning plate is provided with a first limiting part for abutting against the stirrup. The second positioning plate is provided with a second limiting part and a third limiting part for abutting against the stirrup. The first limiting part, the second limiting part and the third limiting part are distributed on both sides of the vertical center line of the stirrup and are arranged at intervals along the circumference of the stirrup to form a stable constraint on the stirrup.

2. The stirrup positioning device for steel cage fabrication according to claim 1, characterized in that, The first positioning plate is provided with a first strip hole extending along its axial direction, and the second positioning plate is provided with a second strip hole extending along its axial direction. The first fastener passes through the first strip hole and the second strip hole to fix the first positioning plate and the second positioning plate.

3. A stirrup positioning device for reinforcing cage fabrication according to claim 2, characterized in that, The first limiting part is detachably connected to the first positioning plate. The first limiting part is provided with a third strip hole extending along its axial direction. The second fastener passes through the first strip hole and the third strip hole to adjust the extension length of the first limiting part relative to the first positioning plate. Both the second limiting part and the third limiting part are detachably connected to the second positioning plate. The second limiting part is provided with a fourth strip-shaped hole extending along its axial direction. The third fastener passes through the second strip-shaped hole and the fourth strip-shaped hole to adjust the extension length of the second limiting part relative to the second positioning plate. The third limiting part is provided with a fifth strip-shaped hole extending along its axial direction. The fourth fastener passes through the second strip-shaped hole and the fifth strip-shaped hole to adjust the extension length of the third limiting part relative to the second positioning plate.

4. A stirrup positioning device for reinforcing cage fabrication according to claim 3, characterized in that, The first limiting part, the second limiting part, and the third limiting part have the same structure. The first limiting part is an L-shaped plate, including a long straight plate and a short straight plate that are fixedly connected. The third strip hole is provided on the long straight plate. The fourth strip hole is provided on the long straight plate of the second limiting part, and the fifth strip hole is provided on the long straight plate of the third limiting part. The short straight plates of the first limiting part, the second limiting part, and the third limiting part together constrain the abutment of the stirrup.

5. A stirrup positioning device for reinforcing cage fabrication according to claim 4, characterized in that, The first positioning plate and the second positioning plate are set vertically. The line connecting the abutting point of the first limiting part, the abutting point of the second limiting part and the abutting point of the third limiting part forms a right triangle, with the right angle facing the center of the stirrup.

6. A stirrup positioning device for reinforcing cage fabrication according to any one of claims 1-5, characterized in that, It also includes a base, which has an I-shaped structure on the horizontal projection plane, and the first positioning plate is vertically fixed on the base.

7. A stirrup positioning device for reinforcing cage fabrication according to claim 6, characterized in that, The first positioning plate, the second positioning plate, the first limiting part, the second limiting part, the third limiting part, and the base are all made of steel profiles, and the surface of the steel profiles is coated with a zinc coating.

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