High-precision steel bar positioning assembly

Abstract

The utility model discloses a high-precision steel bar positioning assembly which comprises a positioning plate, a positioning hole is formed in the positioning plate, and a positioning nut is arranged above the positioning hole. The device further comprises a variable-diameter bolt, the variable-diameter bolt is screwed with the positioning nut and the transition sleeve, and the bottom of the transition sleeve is provided with a threaded head located at the end of the steel bar to be positioned. The utility model has the characteristic of effectively ensuring the position accuracy of the reinforcing steel bar.

Description

Technical Field

[0001] The utility model relates to a steel bar positioner, in particular to a high-precision steel bar positioning component. Background Art

[0002] A reinforced concrete structure is composed of steel bars and concrete, and the concrete tightly wraps the steel bars. In order to meet the requirements of connection and force bearing, the steel bars need to be accurately positioned in the concrete. However, in the existing technology, holes are often opened on the positioning plate, and the steel bars are positioned by passing through the holes. And in order to facilitate the steel bars to pass through the holes, the diameter of the holes on the positioning plate is often made relatively large, which will seriously affect the positioning accuracy of the steel bars. The low positioning accuracy of the steel bars will affect the connection of the steel bars, especially the sleeve grouting connection or the sleeve connection, which has very high requirements for the accuracy of the steel bar position. The existing conventional positioning method of opening holes on the positioning plate cannot meet the construction needs. Therefore, it is urgent to develop a steel bar positioning component that can effectively ensure the position accuracy of the steel bars. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a high-precision steel bar positioning component and its construction method. The utility model has the characteristic of effectively ensuring the position accuracy of the steel bars.

[0004] The technical solution of the utility model: a high-precision steel bar positioning component, including a positioning plate, a group of positioning holes matching with the steel bars to be positioned are arranged on the positioning plate, a positioning nut is arranged above the positioning holes, the positioning holes and the positioning nut are concentrically distributed, and the inner diameter of the positioning nut is smaller than that of the positioning holes; it also includes a stepped bolt, the stepped bolt is matched with the positioning nut, the bottom of the stepped bolt is connected with a transition sleeve located below the positioning plate, and a threaded head is arranged at the bottom of the transition sleeve at the end of the steel bar to be positioned.

[0005] In the aforementioned high-precision steel bar positioning component, an internal thread structure is arranged inside the transition sleeve and is matched with the threaded head.

[0006] In the aforementioned high-precision steel bar positioning component, the stepped bolt includes a hexagonal head, a large-diameter stud and a small-diameter stud are sequentially arranged below the hexagonal head; the external thread of the large-diameter stud matches the internal thread of the positioning nut; the external thread of the small-diameter stud matches the internal thread of the transition sleeve.

[0007] In the aforementioned high-precision steel bar positioning component, the inner diameter of the positioning nut is larger than the diameter of the steel bar to be positioned.

[0008] In the aforementioned high-precision steel bar positioning component, a central hole is also arranged in the middle of the positioning plate.

[0009] Compared with the prior art, the utility model can achieve precise positioning of steel bars through the mutual cooperation between a positioning plate, positioning holes and positioning nuts arranged on the positioning plate, a stepped bolt, a transition sleeve and a steel bar to be positioned provided with a threaded head. The precise positioning of the steel bars can reduce the difficulty of steel bar connection and improve the construction quality. During the construction process, the positioning assembly is connected to the steel bars, which can effectively prevent the positioning steel bars from being displaced during subsequent construction, ensuring the accuracy of the steel bar position. In summary, the utility model has the characteristic of effectively ensuring the accuracy of the steel bar position. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a structural schematic diagram of the utility model;

[0011] Figure 2 is Figure 1 a partial enlarged view in

[0012] Figure 3 is a structural view of the stepped bolt;

[0013] Figure 4 is a partial view after the positioning nut and the positioning plate are assembled;

[0014] Figure 5 is a top view of the positioning plate and the positioning nut;

[0015] Figure 6 is a top view of the positioning plate;

[0016] Figure 7 is an assembled view of the steel bar to be positioned and the transition sleeve;

[0017] Figure 8 is a cross-sectional view of the frame column.

[0018] The reference numerals in the drawings are: 1 - positioning plate, 2 - positioning hole, 3 - positioning nut, 4 - stepped bolt, 5 - transition sleeve, 6 - steel bar to be positioned, 7 - threaded head, 8 - middle hole, 401 - hexagon head, 402 - large-diameter stud, 403 - small-diameter stud. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following further describes the utility model in conjunction with the drawings and embodiments, but it shall not be used as a basis for limiting the utility model.

[0020] Embodiment. A high-precision steel bar positioning assembly is composed as shown in Figure 1-7As shown in the figure, it includes a positioning plate 1. A set of positioning holes 2 that cooperate with the steel bars 6 to be positioned are provided on the positioning plate 1. A positioning nut 3 is provided above the positioning holes 2. The positioning holes 2 and the positioning nut 3 are concentrically distributed, and the inner diameter of the positioning nut 3 is smaller than that of the positioning holes 2. It also includes a stepped bolt 4. The stepped bolt 4 cooperates with the positioning nut 3. A transition sleeve 5 located below the positioning plate 1 is connected to the bottom of the stepped bolt 4. A transition sleeve 5 is provided at the bottom of the stepped bolt 4, and a threaded head 7 located at the end of the steel bar to be positioned is provided at the bottom of the transition sleeve 5.

[0021] The inner part of the transition sleeve 5 is provided with an internal thread structure that cooperates with the threaded head 7.

[0022] The stepped bolt 4 includes a hexagonal head 401. A large-diameter stud 402 and a small-diameter stud 403 are successively provided below the hexagonal head 401. The external thread of the large-diameter stud 402 matches the internal thread of the positioning nut 3. The external thread of the small-diameter stud 403 matches the internal thread of the transition sleeve 5.

[0023] The inner diameter of the positioning nut 3 and the outer diameter of the large-diameter stud 402 are both smooth structures, and the inner diameter of the positioning nut 3 is slightly larger than the outer diameter of the large-diameter stud 402.

[0024] The inner diameter of the positioning nut 3 is larger than the diameter of the steel bar to be positioned.

[0025] A central hole 8 is also provided in the middle of the positioning plate 1.

[0026] The usage method of the steel bar positioning assembly of this application is as follows:

[0027] 1. First, a threaded head is set at the end of the steel bar to be positioned. The threaded head is used both for positioning the steel bar and for subsequent steel bar connection.

[0028] 2. A transition sleeve is screwed onto the threaded head of the steel bar. The transition sleeve is used both for positioning the steel bar and for protecting the thread of the steel bar to prevent it from sticking to concrete slurry during the concrete pouring process.

[0029] 3. Fabricate a positioning plate (usually made of steel plate). The shape of the positioning plate is determined by the steel bars to be positioned. The positioning plate is generally rectangular, circular, etc., and is consistent with the cross-section of the component. To facilitate the pouring of concrete, save materials, and reduce weight, a central hole is generally opened in the middle position inside the positioning plate. The shape of the central hole is rectangular or circular. Positioning holes are opened in the positioning plate at the position of the steel bars to be positioned. To improve the versatility of the positioning plate, the diameter of the positioning hole needs to be larger than the diameter of the steel bars that may be used. The diameter of the positioning hole can be set as the diameter of the steel bars that may be used + 4 mm; the commonly used steel bar diameters in the project are 12, 14, 16, 18, 20, 22, 25 mm. The less commonly used steel bar diameters are 28 mm and 32 mm. Therefore, the diameter of the steel bars to be positioned that may be used is 32 mm, and the diameter of the positioning hole can be set as 36 mm.

[0030] 4. Weld a positioning nut at the exact center above the positioning hole of the positioning plate. The positioning nut is of a hollow shape and has internal threads. The inner diameter of the positioning nut is smaller than the diameter of the hole in the positioning steel plate, but larger than the diameter of the steel bars to be positioned that may be used, generally the diameter of the steel bars to be positioned that may be used + 2 mm. Therefore, according to the previous logic, the inner diameter of the positioning nut can be set as 34 mm.

[0031] 5. Process and fabricate a stepped bolt. The stepped bolt consists of three parts, as follows Figure 3 shown, from top to bottom are the hexagonal head, large-diameter stud, and small-diameter stud.

[0032] Both the large-diameter stud and the small-diameter stud have external threads. The external thread of the large-diameter stud matches the internal thread of the positioning nut. The external thread of the small-diameter stud matches the internal thread of the transition sleeve.

[0033] 6. Screw the stepped bolt into the positioning nut, as follows Figure 2 shown:

[0034] 7. Connect the stepped bolt to the sleeve on the steel bar to be positioned, ensuring that the upper external thread of the steel bar to be positioned is not exposed;

[0035] 8. Then tie the positioning steel bars and stirrups to improve the integrity of the steel bar cage. Taking the frame column as an example, the cross-section of the frame column is as follows Figure 8 shown:

[0036] The device of the present application can also be used for the positioning of anchor bolts, anchor bars, and steel bar cages and steel bar skeletons;

[0037] The inner diameter of the positioning nut can be smooth, and the outer circumference of the large-diameter stud of the stepped bolt is also smooth and matches the inner diameter of the positioning nut. The inner diameter of the positioning nut 3 is slightly larger than the outer diameter of the large-diameter stud 402, and the difference between the two determines the positioning accuracy of the steel bar, that is, the tolerance between the two is used to control the positioning accuracy of the steel bar.

[0038] After the steel bar positioning component is used, that is, after the concrete is poured, all the stepped bolts, transition sleeves, etc. are removed, and then the steel bar positioning component can be disassembled and reused.

Claims

1. High-precision steel bar positioning component, characterized by: The invention comprises a positioning plate (1), wherein a group of positioning holes (2) matching with the steel bars (6) to be positioned are provided on the positioning plate (1), a positioning nut (3) is provided above the positioning hole (2), the positioning hole (2) and the positioning nut (3) are coaxially distributed, and the inner diameter of the positioning nut (3) is smaller than that of the positioning hole (2); and a reducing bolt (4) matching with the positioning nut (3), a transition sleeve (5) located below the positioning plate (1) is provided at the bottom of the reducing bolt (4), and a threaded thread head (7) located at the end of the steel bar to be positioned is provided at the bottom of the transition sleeve (5).

2. The high-precision steel bar positioning assembly according to claim 1, characterized in that: An internal thread structure is provided inside the transition sleeve (5) and matches with the thread head (7).

3. The high-precision steel bar positioning assembly according to claim 2, characterized in that: The reducing bolt (4) comprises a hexagonal head (401), and a large-diameter stud (402) and a small-diameter stud (403) are arranged in sequence below the hexagonal head (401); the external thread of the large-diameter stud (402) matches the internal thread of the positioning nut (3); and the external thread of the small-diameter stud (403) matches the internal thread of the transition sleeve (5).

4. The high-precision steel bar positioning assembly according to claim 1, characterized in that: The inner diameter of the positioning nut (3) is larger than the diameter of the steel bar (6) to be positioned.

5. The high-precision steel bar positioning assembly according to claim 2, characterized in that: The inner diameter of the positioning nut (3) and the outer diameter of the large-diameter stud (402) are both smooth structures, and the inner diameter of the positioning nut (3) is larger than the outer diameter of the large-diameter stud (402).

6. The high-precision steel bar positioning assembly according to claim 1, characterized in that: The positioning plate (1) is also provided with a middle hole (8) in the middle.

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