Spacing detection equipment for construction reinforcement engineering quality detection
By designing the drive mechanism and the arc-shaped clamp, the error problem in the measurement of existing equipment is solved, achieving higher accuracy and stable rebar spacing detection, thus ensuring construction quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SICHUAN GAOXIN ENG QUALITY INSPECTION CO LTD
- Filing Date
- 2025-09-19
- Publication Date
- 2026-05-15
AI Technical Summary
Existing spacing testing equipment for inspecting the quality of reinforcing steel in building construction is prone to deformation or poor contact of the reinforcing steel due to improper force during measurement, resulting in measurement errors that affect construction quality and acceptance.
The device employs a drive mechanism and an arc-shaped locking block design. The drive motor drives the actuating blades to achieve stable contact between the arc-shaped locking block and the outer side of the rebar. Combined with a bubble level and a limit cone fixing device, it ensures measurement accuracy and equipment stability.
It improves the accuracy and stability of rebar spacing detection, reduces measurement errors, and improves construction progress and acceptance accuracy.
Smart Images

Figure CN224246946U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of steel bar spacing detection and processing, and in particular to a spacing detection device for quality inspection of building steel bar engineering. Background Technology
[0002] The purpose of inspecting the spacing of reinforcing bars is to ensure that the actual construction matches the design blueprint. The spacing of reinforcing bars directly affects the load-bearing capacity of reinforced concrete members. If the spacing is too large, the concrete between the reinforcing bars will not be able to effectively transfer stress, forming weak areas, reducing the bending, shear and compressive strength of the members, and resulting in the failure to achieve the expected safety reserve.
[0003] Therefore, inspecting the spacing of reinforcing bars is not only necessary for final acceptance but also a crucial step in quality control during construction. Inspection allows for the timely detection and correction of problems, preventing economic losses and project delays caused by large-scale rework.
[0004] However, existing spacing testing equipment for inspecting the quality of reinforcing steel in construction projects still has some problems in practical use: reinforcing steel is usually round, and traditional mechanical vernier calipers require manual control of the measuring force. If the force is too large, it will squeeze the measuring claw of the caliper or even cause slight deformation of the reinforcing steel. If the force is too small, the measuring claw may not make proper contact with the reinforcing steel, resulting in gaps and errors in the measurement of the reinforcing steel spacing. This will affect the normal construction work and construction acceptance of the operators. Utility Model Content
[0005] This utility model provides a spacing detection device for quality inspection of building steel reinforcement projects, in order to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A spacing detection device for inspecting the quality of building steel reinforcement engineering includes a connecting support rod and a driving mechanism. Both ends of the surface of the connecting support rod are provided with a steel reinforcement spacing measurement and adjustment mechanism.
[0008] The driving mechanism includes a bottom connecting block, a drive motor is fixedly connected to the top of the back of the bottom connecting block, and a toggle blade is fixedly connected to the output end of the drive motor.
[0009] The rebar spacing measurement and adjustment mechanism includes a telescopic measuring scale. Both ends of the back of the telescopic measuring scale are fixedly connected to movable limiting sliders. An arc-shaped locking block is fixedly connected to the top of one side of the movable limiting slider. A serrated plate is fixedly connected to the back of the movable limiting slider. The movable limiting slider slides on the side of the connecting support rod surface near the middle.
[0010] As a further improvement to this technical solution: the two ends of the connecting support rod are rotatably connected to an auxiliary support steel frame, and a closed cover plate is inserted into the middle of the front of the auxiliary support steel frame through a slot.
[0011] As a further improvement to this technical solution: auxiliary handles are fixedly connected to both sides of the upper end of the auxiliary support steel frame, and the front end of the auxiliary handles is made of rubber.
[0012] As a further improvement to this technical solution: a bubble level is fixedly connected to the middle of the upper end of the auxiliary support steel frame, and a limiting fixation mechanism is fixedly connected to the top of both sides of the connecting support rod.
[0013] As a further improvement to this technical solution: the limiting and fixing mechanism includes a connecting bearing, which is fixed to the top of one side of the connecting support rod. A rotating rod is rotatably connected to the inner wall of the connecting bearing, and one end of the rotating rod is rotatably connected to a limiting cone through a rotating shaft.
[0014] As a further improvement to this technical solution: the number of the agitator blades is six, and the front end of the agitator blades is made of sponge material.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] By setting up the drive mechanism and the rebar spacing measurement and adjustment mechanism, the arc-shaped clamp will be close to the outer surface of the two rebars, and the arc-shaped inner side of the clamp will evenly distribute the contact force, avoiding the sharp measuring claws of the caliper from scratching or squeezing the surface of the rebar. At the same time, the contact area between the arc-shaped clamp and the rebar is larger, forming a stable structure similar to a groove. Compared with the two point contacts of the vernier caliper tip, the arc-shaped surface contact can more stably adhere to the outer surface of the rebar, increasing the accuracy of rebar spacing detection and indirectly increasing the work progress.
[0017] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it according to the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. The specific implementation methods of this utility model are given in detail in the following embodiments and their accompanying drawings. Attached Figure Description
[0018] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:
[0019] Figure 1This is a structural schematic diagram of a spacing detection device for quality inspection of building reinforcement engineering proposed in this utility model;
[0020] Figure 2 This is a schematic diagram showing the disassembled structure of a spacing detection device for quality inspection of building reinforcement engineering proposed in this utility model;
[0021] Figure 3 This utility model provides a front structural diagram of the drive mechanism and the rebar spacing measurement and adjustment mechanism of a rebar spacing testing device for quality inspection of building rebar engineering.
[0022] Figure 4 This utility model provides a schematic diagram of the back structure of the drive mechanism and the steel bar spacing measurement and adjustment mechanism of a spacing testing device for quality inspection of building steel reinforcement engineering.
[0023] Figure 5 This is a schematic diagram of the limiting fixation mechanism of a spacing detection device for quality inspection of building steel reinforcement engineering proposed in this utility model.
[0024] The attached diagram lists the components represented by each number as follows:
[0025] 1. Connect the support rod;
[0026] 2. Drive mechanism; 201. Bottom connecting block; 202. Drive motor; 203. Actuating blade;
[0027] 3. Rebar spacing measurement and adjustment mechanism; 301. Telescopic measuring ruler; 302. Moving limit slider; 303. Arc-shaped locking block; 304. Serrated plate;
[0028] 4. Auxiliary support steel frame; 5. Enclosed cover plate; 6. Auxiliary handle; 7. Bubble level;
[0029] 8. Limiting and retaining mechanism; 801. Connecting bearing; 802. Rotating rod; 803. Limiting cone. Detailed Implementation
[0030] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are for illustrative purposes only and are not intended to limit the scope of this utility model. The utility model is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of this utility model will become clearer from the following description and claims. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model.
[0031] Please see Figures 1-4In this embodiment of the present invention, a spacing detection device for quality inspection of building steel reinforcement engineering includes a connecting support rod 1 and a driving mechanism 2. Both ends of the surface of the connecting support rod 1 are provided with a steel reinforcement spacing measurement and adjustment mechanism 3.
[0032] The drive mechanism 2 includes a bottom connecting block 201, a drive motor 202 is fixedly connected to the top of the back of the bottom connecting block 201, and a toggle blade 203 is fixedly connected to the output end of the drive motor 202.
[0033] The rebar spacing measurement and adjustment mechanism 3 includes a telescopic measuring scale 301. Both ends of the back of the telescopic measuring scale 301 are fixedly connected to a movable limiting slider 302. An arc-shaped locking block 303 is fixedly connected to the top of one side of the movable limiting slider 302. A serrated plate 304 is fixedly connected to the back of the movable limiting slider 302. The movable limiting slider 302 slides on the side of the surface of the connecting support rod 1 near the middle.
[0034] The length of the actuating blade 203 is slightly larger than the size of the semi-circular groove on the serrated plate 304. When the drive motor 202 rotates and drives the actuating blade 203 to rotate, the actuating blade 203 actuates the serrated plate 304 and is not hindered by getting stuck in the semi-circular groove of the serrated plate 304, and can still smoothly push the serrated plate 304 to move in the horizontal direction.
[0035] The model parameters of drive motor 202 are set as 130 motor, with a voltage of 3V and a speed of 17000 rpm.
[0036] Please see Figures 1-2 The two ends of the connecting support rod 1 are rotatably connected to an auxiliary support steel frame 4, and a closed cover plate 5 is inserted into the middle of the front of the auxiliary support steel frame 4 through a slot.
[0037] The auxiliary support steel frame 4 serves as the main support in the rebar spacing detection equipment. It has an internal storage slot for storing other small working tools, and a detachable cover plate 5 can be installed in the storage slot. The space available on the auxiliary support steel frame 4 is used in a reasonable way to make it more user-friendly and convenient when carrying pens or other small working tools.
[0038] Please see Figures 1-2 Auxiliary handles 6 are fixedly connected to both sides of the upper end of the auxiliary support steel frame 4, and the front end of the auxiliary handles 6 is made of rubber.
[0039] The auxiliary handle 6 has two symmetrical handles, so when carrying the rebar spacing detection equipment, there is no need to switch hands. Users can also alternate between their left and right hands to lift it, giving the other arm a short rest and providing flexibility. The rubber front end of the auxiliary handle 6 increases the friction between the auxiliary handle 6 and the operator's hand. The operator's hands may become slippery due to sweat, dust, rain or oil. The rubber material provides a high coefficient of friction, forming a strong grip and greatly reducing the probability of the rebar spacing detection equipment being accidentally dropped due to slippage.
[0040] Please see Figures 1-2 A bubble level 7 is fixedly connected to the middle of the upper end of the auxiliary support steel frame 4, and a limiting fixation mechanism 8 is fixedly connected to the top of both sides of the connecting support rod 1.
[0041] The bubble level 7 is fixed on the auxiliary support steel frame 4, providing an intuitive visual reference and ensuring that the operator keeps the equipment level during scanning. This eliminates systematic measurement errors caused by equipment tilt and ensures that each measurement is performed under the same reference conditions, making the data more reliable.
[0042] Please see Figure 5 The limiting and fixing mechanism 8 includes a connecting bearing 801, which is fixed to the top of one side of the connecting support rod 1. A rotating rod 802 is rotatably connected to the inner wall of the connecting bearing 801. One end of the rotating rod 802 is rotatably connected to a limiting cone 803 through a rotating shaft.
[0043] With the connecting bearing 801 as the center, the rotating rod 802 is rotated until the limiting cone 803 can be driven into the soil. The limiting cone 803 fixes the rebar spacing detection device in the soil, providing an immovable physical fulcrum for the rebar spacing detection device and avoiding inaccurate measurements caused by slight displacement of the rebar spacing detection device.
[0044] Please see Figures 3-4 The actuating blade 203 has six blades, and the front end of the blades of the actuating blade 203 is made of sponge material.
[0045] The tip of the actuating blade 203 is made of sponge material. Sponge is a soft and elastic material. When the actuating blade 203 comes into contact with the serrated plate 304, it is a soft and buffered contact rather than a rigid collision. This eliminates the noise when the actuating blade 203 rubs against the serrated plate 304, making the working environment more comfortable.
[0046] The working principle of this utility model is as follows:
[0047] First, place the rebar spacing detection device on the ground, closely monitor the position of the bubble in the bubble level 7, perform preliminary calibration of the rebar spacing detection device, and adjust the rotation angle of the rotating rod 802 and the limiting cone 803 on the connecting bearing 801 until the tip of the limiting cone 803 is better inserted into the soil to fix the position of the rebar spacing detection device.
[0048] Secondly, the drive motor 202 is started to drive the agitator blade 203 to rotate slowly clockwise. The blade of the agitator blade 203 contacts the semi-circular groove in the serrated plate 304, and the blade agitates the upper and lower layers of serrated plates 304 to slide relative to each other. The moving limit slider 302 simultaneously drives the arc-shaped block 303 to slide horizontally to both sides until the inner side of the arc-shaped block 303 is tightly pressed against the outer surface of the steel bar.
[0049] Finally, the telescopic measuring scale 301 begins to unfold to both sides, and the values on the telescopic measuring scale 301 are read to obtain the spacing of the reinforcing bars, and the values are recorded.
[0050] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or equivalent variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are considered equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.
Claims
1. A spacing detection device for inspecting the quality of reinforcing steel bars in building construction, comprising a connecting support rod (1) and a driving mechanism (2), characterized in that: The two ends of the surface of the connecting support rod (1) are provided with a steel bar spacing measurement and adjustment mechanism (3); The drive mechanism (2) includes a bottom connecting block (201), a drive motor (202) is fixedly connected to the top of the back side of the bottom connecting block (201), and a toggle blade (203) is fixedly connected to the output end of the drive motor (202). The rebar spacing measurement and adjustment mechanism (3) includes a telescopic measuring scale (301). Both ends of the back of the telescopic measuring scale (301) are fixedly connected to a movable limiting slider (302). An arc-shaped locking block (303) is fixedly connected to the top of one side of the movable limiting slider (302). A serrated plate (304) is fixedly connected to the back of the movable limiting slider (302). The movable limiting slider (302) slides on the side of the connecting support rod (1) near the middle.
2. The spacing detection device for inspecting the quality of reinforcing steel in building construction according to claim 1, characterized in that, The two ends of the connecting support rod (1) are rotatably connected to an auxiliary support steel frame (4), and a closed cover plate (5) is inserted into the middle of the front of the auxiliary support steel frame (4) through a slot.
3. The spacing detection device for inspecting the quality of reinforcing steel in building construction according to claim 2, characterized in that, Auxiliary handles (6) are fixedly connected to both sides of the upper end of the auxiliary support steel frame (4), and the front end of the auxiliary handles (6) is made of rubber.
4. The spacing detection device for inspecting the quality of reinforcing steel in building construction according to claim 3, characterized in that, A bubble level (7) is fixedly connected to the middle of the upper end of the auxiliary support steel frame (4), and a limiting fixation mechanism (8) is fixedly connected to the top of both sides of the connecting support rod (1).
5. A spacing detection device for inspecting the quality of reinforcing steel in building construction according to claim 4, characterized in that, The limiting fixation mechanism (8) includes a connecting bearing (801), which is fixed to the top of one side of the connecting support rod (1). A rotating rod (802) is rotatably connected to the inner wall of the connecting bearing (801), and one end of the rotating rod (802) is rotatably connected to a limiting cone (803) by a rotating shaft.
6. The spacing detection device for inspecting the quality of reinforcing steel in building construction according to claim 1, characterized in that, The agitator (203) has six blades, and the front end of the blades is made of sponge material.