A steel bar hook inner diameter detection assembly

By designing a rebar hook inner diameter detection component, and utilizing sliding connection and incremental measuring plates, the problem of large errors in traditional manual detection was solved, achieving efficient and accurate rebar bending detection, and improving production efficiency and quality reliability.

CN224285753UActive Publication Date: 2026-05-26CHINA RAILWAY 11TH BUREAU GRP CORP LTD +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHINA RAILWAY 11TH BUREAU GRP CORP LTD
Filing Date
2025-05-13
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Traditional manual inspection of steel bar bending angles has large errors, affecting project quality and safety, and cannot correct substandard products in a timely manner, resulting in low production efficiency.

Method used

Design a rebar hook inner diameter detection component, including a hand-held cylinder and a slidably connected measuring plate. The measuring plate is engraved with radius values ​​and is prevented from detaching by an internal hexagon screw. The outer diameter is distributed in an increasing manner to accommodate different sizes, and a 90-degree mark is provided at the arc end to assist in determining the angle.

Benefits of technology

It improves the convenience and accuracy of testing, reduces measurement errors, simplifies the operation process, and ensures the efficiency and reliability of testing.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model relates to the field of rebar hook inner diameter detection, and more particularly to a rebar hook inner diameter detection component, comprising a hand-held cylinder and several stacked measuring plates. One end of each measuring plate is arc-shaped, and the other end of each measuring plate has an integrally formed connecting portion. The hand-held cylinder has a groove for accommodating the connecting portion, and the connecting portion is slidably connected within the groove. An anti-detachment component is installed on the hand-held cylinder to prevent the connecting portion from disengaging from the groove. The measuring plates are slidably connected to the hand-held cylinder via the connecting portion at their ends. This rebar hook inner diameter detection component allows users to easily and quickly adjust and select the appropriate measuring plate according to the size of the rebar hook. This design avoids the inconvenience of frequently changing measuring tools and significantly improves detection efficiency.
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Description

Technical Field

[0001] This utility model relates to the field of detecting the inner diameter of rebar hooks, and in particular to a rebar hook inner diameter detection component. Background Technology

[0002] After traditional rebar bending, strict quality control is required to ensure the accuracy of the bending angle and meet the needs of construction and engineering. In the past, this inspection process mainly relied on manual visual inspection, with workers using experience and intuition to judge whether the bending angle met the acceptable standards. However, this method has significant limitations because manual inspection is often accompanied by large errors, which can affect the quality and safety of the project.

[0003] To avoid over-bending or under-bending, when defective products are detected, the bending parameters of the bending machine need to be adjusted promptly to ensure the pass rate of subsequent products. However, in practice, due to the accuracy limitations of manual inspection, these problems may not be detected and corrected in time, affecting production efficiency and potentially leading to greater quality risks. Therefore, it is necessary to provide a rebar hook inner diameter detection component to solve the above-mentioned technical problems. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a steel bar hook inner diameter detection component.

[0005] This utility model provides a rebar hook inner diameter detection component, including a hand-held cylinder and several stacked measuring plates. One end of each measuring plate is arc-shaped, and the other end of each measuring plate has an integrally formed connecting portion. The hand-held cylinder has a groove for accommodating the connecting portion, and the connecting portion is slidably connected within the groove. An anti-detachment component is installed on the hand-held cylinder to prevent the connecting portion from detaching from the groove. The measuring plates are slidably connected to the hand-held cylinder via the connecting portion at their ends. During measurement, a measuring plate of appropriate radius is pushed away from the hand-held cylinder, causing it to bulge out. Then, the arc-shaped portion of the measuring plate contacts the inner wall of the rebar hook. The measuring plate has a vertically engraved radius; the inner diameter of the rebar hook is determined based on this radius value.

[0006] Preferably, the anti-detachment component includes a hexagon socket screw, the connecting part has a slotted groove, and the handle is threadedly connected to the hexagon socket screw, which passes through the slotted groove. The insertion of the hexagon socket screw into the slotted groove prevents the connecting part from detaching from the groove.

[0007] Preferably, the hexagonal socket screw is embedded inside the grip sleeve to prevent it from protruding and affecting the feel.

[0008] Preferably, the arc-shaped end of the measuring piece has an angle of 135 degrees, and the arc-shaped end of the measuring piece 2 is symmetrically provided with a 90-degree marking portion to determine whether the bending angle is qualified.

[0009] Preferably, the outer diameter of the measuring plate is distributed in an increasing manner to meet the testing requirements of different sizes.

[0010] Compared with related technologies, the present invention provides the following beneficial effects:

[0011] Ease of use and high efficiency

[0012] Sliding adjustment design: By sliding the measuring piece at its end to a groove inside the hand-held cylinder, users can easily and quickly adjust and select the appropriate measuring piece according to the size of the rebar hook. This design avoids the hassle of frequently changing measuring tools and significantly improves inspection efficiency.

[0013] Intuitive reading: The radius value is directly engraved on the measuring plate. Users only need to place the selected measuring plate in contact with the inner wall of the rebar hook to read the inner diameter directly without additional calculation or conversion, which further simplifies the operation process.

[0014] Measurement accuracy and reliability

[0015] Precise matching: Since the outer diameter of the measuring plates is distributed in an increasing manner, users can select the measuring plate that is closest to the inner diameter of the rebar hook according to their actual needs, thereby achieving precise matching and reducing measurement errors.

[0016] Angle determination: The measuring piece has symmetrical 90-degree markings at one end of its arc shape. This not only helps users confirm the fit between the measuring piece and the inner wall of the rebar hook, but also helps determine whether the rebar bending angle is qualified, thus improving the comprehensiveness and accuracy of the measurement. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the hand grip tube structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the connecting part structure of this utility model.

[0020] The following are the labels in the diagram: 1. Hand grip; 2. Measuring plate; 3. Connecting part; 4. Slide groove; 5. Anti-detachment component; 6. Socket head screw; 7. Waist groove; 8. 90-degree marking part. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Please refer to the following: Figures 1 to 3 A rebar hook inner diameter detection component comprises a hand-held cylinder 1 and several stacked measuring plates 2. These measuring plates 2 are ingeniously designed, with one end being arc-shaped to conform to the inner wall shape of the rebar hook; while the other end is integrally provided with a connecting part 3 for sliding connection with the hand-held cylinder 1.

[0023] The handgrip 1 has a dedicated groove 4 inside to accommodate the connecting part 3 at the end of the measuring piece 2. These connecting parts 3 can slide smoothly within the groove 4, allowing the measuring piece 2 to be extended and retracted relative to the handgrip 1. To ensure that the measuring piece 2 does not accidentally detach from the handgrip 1 during sliding, an anti-detachment component 5 is also installed on the handgrip 1.

[0024] Specifically, the anti-detachment component 5 includes a hex socket screw 6. A slotted groove 7 is provided on the connecting part 3, and the hex socket screw 6 is threaded onto the grip sleeve 1, passing through the slotted groove 7. This design allows the hex socket screw 6 to limit the sliding range of the connecting part 3, effectively preventing it from detaching from the groove 4.

[0025] In addition, to improve the user experience, the hex socket screw 6 is embedded inside the grip sleeve 1 to prevent it from protruding and affecting the feel.

[0026] The arc-shaped end of the measuring piece 2 is designed to be 135 degrees. At the same time, a 90-degree marking part 8 is provided at a symmetrical position on this arc-shaped end, which is used to determine whether the bending angle of the steel bar is qualified during the measurement process.

[0027] It is worth mentioning that the outer diameters of these measuring plates 2 are distributed in an increasing manner. This design allows the testing assembly to meet the testing needs of rebar hooks of different sizes. In use, the user simply pushes the measuring plate 2 of appropriate radius away from the hand-held cylinder 1, making it protrude, and then ensures that the arc-shaped part of the measuring plate 2 makes close contact with the inner wall of the rebar hook. By reading the radius value engraved on this measuring plate 2, the user can accurately determine the inner diameter of the rebar hook.

[0028] [Specific steps]

[0029] 1. Based on the structural requirements for steel bar bending in "22G101-1: Drawing Rules and Construction Details of Overall Plane Representation of Concrete Structure Construction Drawings", a detection component for steel bars of different diameters is made. The measuring piece 1 is made of acrylic material with a radius of 4 times the diameter of the steel bar (HRB400). A 90° angle scale line is marked on the measuring piece 1.

[0030] 2. Use a rebar bending machine to process a stirrup sample, and use a testing component to test at the bending angle to check whether the radius fits and whether the angle meets the requirements;

[0031] 3. If the radius or angle of the finished steel bar bending product does not meet the requirements, the relevant parameters of the steel bar bending machine should be gradually adjusted according to the test results to ensure that the quality of the finished product meets the specifications.

[0032]

Process Flow

[0033] Inspection component fabrication → Rebar bending processing → Inspection component inspection → Bending machine adjustment → Reprocessing → Re-inspection → Finished bending product meets requirements.

[0034] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A component for detecting the inner diameter of a rebar hook, characterized in that, The device includes a hand-held cylinder (1) and several stacked measuring plates (2). One end of the measuring plate (2) is arc-shaped, and the other end of the measuring plate (2) is integrally provided with a connecting part (3). The hand-held cylinder (1) is provided with a groove (4) for accommodating the connecting part (3), and the connecting part (3) is slidably connected in the groove (4). The hand-held cylinder (1) is equipped with an anti-detachment component (5) to prevent the connecting part (3) from detaching from the groove (4).

2. The rebar hook inner diameter detection component according to claim 1, characterized in that, The anti-detachment component (5) includes an internal hexagon screw (6), the connecting part (3) is provided with a waist-shaped groove (7), the hand grip tube (1) is connected to the internal hexagon screw (6) by thread, and the internal hexagon screw (6) passes through the waist-shaped groove (7).

3. The rebar hook inner diameter detection component according to claim 2, characterized in that, The internal hex screw (6) is embedded inside the hand grip (1).

4. The rebar hook inner diameter detection component according to claim 1, characterized in that, The measuring piece (2) has an arc-shaped end with an angle of 135 degrees, and the arc-shaped end of the measuring piece (2) is symmetrically provided with a 90-degree marking part (8).

5. The rebar hook inner diameter detection component according to claim 1, characterized in that, The outer diameter of the measuring piece (2) is distributed in an increasing manner.