A mounting auxiliary device for a cover thickness tester
By designing an auxiliary device for installing the rebar cover thickness tester, the problem of the tool interface at the end of the robotic arm being unable to adapt to precision detection sensors was solved, and a stable connection of the thickness tester to the robotic arm was achieved, ensuring accurate measurement of the rebar cover thickness, especially for measurements in hard-to-access locations.
Patent Information
- Application Number
- CN202521577777.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-28
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-07-28
AI Technical Summary
The existing end-effector tool interface cannot be directly adapted to precision non-destructive testing sensors, making it difficult to detect the thickness of the rebar cover, especially in places where it is difficult for personnel to reach and achieve accurate measurement.
An auxiliary device for installing a rebar cover thickness tester was designed, including a mounting bracket, a connecting plate, and a fastening mechanism. The mounting bracket is fixed to the end of the robotic arm, and the connecting plate is equipped with a fastening mechanism and a clamping mechanism to ensure that the thickness tester is stably connected to the robotic arm and adapt to the measurement needs of different positions.
A stable connection between the thickness tester and the robotic arm was achieved, enabling convenient measurement of the thickness of the concrete cover for reinforcing bars, especially in hard-to-reach locations, thus improving the accuracy and efficiency of the measurement.
Smart Images

Figure CN224681535U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of measuring equipment technology, specifically to an installation auxiliary device for a rebar protective layer thickness tester. Background Technology
[0002] The thickness of the concrete cover is a key parameter for the durability and safety of concrete structures. An excessively thin cover accelerates steel corrosion, leading to structural cracking, spalling, and even a decrease in load-bearing capacity, seriously threatening the lifespan and safety of the project. Therefore, accurately and efficiently detecting the thickness of the concrete cover is a core aspect of engineering quality control, acceptance evaluation, and health monitoring of in-service structures.
[0003] Currently, the most widely used methods for detecting the thickness of the concrete cover of reinforcing bars in engineering practice mainly rely on manually operated portable electromagnetic induction or radar wave detectors. Inspectors must hold the instrument and scan the structural surface point by point or continuously. While this method is flexible, it has significant limitations. For areas inaccessible to personnel, data measurement and collection require the use of robotic arms or other tools. However, existing general-purpose robotic arm end effector interfaces (such as flanges) often cannot directly meet the specific requirements of precision non-destructive testing sensors. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides an auxiliary device for installing a rebar cover thickness tester, which solves the problem that the end of a robotic arm cannot be adapted to connect to a thickness measuring instrument.
[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: an auxiliary device for installing a rebar cover thickness tester, comprising a connecting component for fixing to the end of a robotic arm, the connecting component comprising a retaining seat, the retaining seat being adapted to engage with the end of the robotic arm, bolt connection holes being provided at corresponding positions on the retaining seat and the end of the robotic arm, and being fixedly connected by adapted connecting bolts;
[0006] The bottom of the card holder is fixed with a connecting plate, which is used to connect and fix the thickness tester. A fastening mechanism is provided on the rear side of the connecting plate. The thickness tester includes a handle located at the rear end, and the fastening mechanism is used to fix the handle of the thickness tester.
[0007] Optionally, the fastening mechanism includes a U-bolt and a fastening nut. Limiting grooves are opened on the rear side of the connecting plate corresponding to the left and right sides of the handle. The two screws of the U-bolt slide through the corresponding limiting grooves on both sides, and the handle of the thickness tester is located in the U-shaped opening of the U-bolt. The fastening nut is threaded onto the U-bolt from the top of the connecting plate.
[0008] Optionally, a clamping mechanism is provided on the front side of the connecting plate, which is used to clamp the front part of the thickness tester.
[0009] Optionally, the clamping mechanism includes two sets of clamping blocks arranged symmetrically on the left and right. The front side of the connecting plate has an elongated sliding hole that is open from top to bottom along the left and right direction. The two sets of clamping blocks are slidably disposed in the sliding hole. The left and right ends of the sliding hole have positioning threaded holes that communicate with the outside. Positioning bolts are threadedly connected in the positioning threaded holes. The positioning bolts abut against the side wall of the corresponding clamping block.
[0010] Optionally, the clamping block is provided with limiting blocks facing the front and rear directions on both the upper and lower sides of the sliding hole, so that the height of the clamping block in the sliding hole remains unchanged.
[0011] Optionally, the top of the clamping block has a through hole for connecting the left and right sides. A reinforcing bolt is inserted into the through hole, and a matching nut is provided to tighten the reinforcing bolt so that the clamping blocks on the left and right sides are connected and secured.
[0012] Optionally, a rubber pad is provided on the bottom of the clamping block facing the thickness tester.
[0013] This utility model provides an auxiliary device for installing a rebar cover thickness tester, which has the following advantages:
[0014] This utility model provides an auxiliary device for installing a rebar cover thickness tester. By setting a connecting component at the gripper end of a robotic arm, it can be adapted to be fixed to the end of the robotic arm using a mounting bracket. The connecting plate fixed on the mounting bracket can connect the thickness tester into a whole, thus enabling the thickness tester to be adapted and fixed to the robotic arm. This facilitates personnel to measure the thickness of the rebar cover in inaccessible locations. The connecting plate includes front and rear parts. The U-bolt at the rear end can firmly secure the handle of the thickness tester into the limiting groove of the connecting plate. The clamping block at the front end can hold the thickness tester from both sides. The front end is clamped and fixed, so that the entire thickness tester is horizontally and stably connected to the bottom of the connecting plate, which facilitates movement and measurement on concrete. Furthermore, after the left and right clamping blocks hold the thickness tester, the top of the clamping blocks can be further connected together by reinforcing bolts, ensuring that the thickness tester is stably clamped during the swinging of the robotic arm and preventing the thickness tester from shaking and falling off. Rubber pads are set at the bottom of the clamping blocks facing the thickness tester, which increases friction to ensure stable clamping and prevents the clamping blocks from causing wear to the side wall of the thickness tester. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model in use;
[0016] Figure 2 for Figure 1 A schematic diagram of the connection components and thickness tester;
[0017] Figure 3 for Figure 1 A structural schematic diagram of a connection component from another perspective;
[0018] Figure 4 This is a schematic diagram of the thick-bottom tester.
[0019] In the diagram: 1. Robotic arm; 2. Card holder; 3. Connecting plate; 4. Thickness tester; 5. Display screen; 6. Handle; 11. Connecting bolt; 21. U-bolt; 22. Fastening nut; 29. Positioning bolt; 31. Clamping block; 32. Limiting block; 33. Rubber pad; 41. Reinforcing bolt; 101. Bolt connection hole; 203. Positioning threaded hole; 301. Limiting groove; 302. Sliding hole; 401. Connecting through hole. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.
[0021] Please see Figures 1 to 4 This utility model provides a technical solution: an auxiliary device for installing a rebar cover thickness tester, including a connecting component for fixing to the end of a robotic arm 1. The connecting component includes a mounting base 2, which is adapted to engage with the end of the robotic arm 1. Bolt connection holes 101 are provided at corresponding positions on the mounting base 2 and the end of the robotic arm 1, and the connection is fixed by a matching connecting bolt 11. A connecting plate 3 is fixed to the bottom of the mounting base 2, and the connecting plate 3 is used to connect and fix the thickness tester 4. A fastening mechanism is provided on the rear side of the connecting plate 3. The thickness tester 4 includes a handle 6 located at the rear. The thickness tester 4 used in this utility model comes from a utility model patent with authorization announcement number CN218446042U and the name "Rebar Scanner," which belongs to the prior art. The measurement logic will not be described in detail here. Under normal circumstances, the operator can hold the handle 6 to measure the data. The fastening mechanism is used to fix the handle 6 of the thickness tester 4. The fastening mechanism includes a U-bolt 21 and a fastening nut 22. The connecting plate 3 has limiting grooves 301 on the left and right sides corresponding to the handle 6 on the rear side. The two screws of the U-bolt 21 slide through the corresponding limiting grooves 301 on both sides, and the handle 6 of the thickness tester 4 is located in the U-shaped opening of the U-bolt 21. The fastening nut 22 is threaded from the top of the connecting plate 3 onto the U-bolt 21. As the fastening nut 22 is tightened, the U-bolt 21 can drive the handle 6 of the thickness tester 4 upward to press against the connecting plate 3, thereby realizing the fixed connection between the thickness tester 4 and the connecting plate 3.
[0022] In this embodiment, as a preferred solution, a clamping mechanism is provided on the front side of the connecting plate 3. The clamping mechanism is used to clamp the front part of the thickness tester 4. The thickness tester 4 can be fixed to the bottom of the connecting plate 3 by the U-bolt 21 at the rear. Furthermore, by clamping the front part of the thickness tester 4 from both sides through the clamping mechanism at the front, the thickness tester 4 can be better maintained in a fixed position at the bottom of the connecting plate 3, which is convenient for subsequent movement and measurement. The clamping mechanism includes two sets of clamping blocks 31 arranged symmetrically on the left and right. The front side of the connecting plate 3 has a long strip-shaped sliding hole 302 that is open from top to bottom along the left and right direction. The two sets of clamping blocks 31 are slidably arranged in the sliding hole. Inside 302, clamping blocks 31 are provided with limiting blocks 32 facing the front and back directions on both the upper and lower sides of the sliding hole 302 to prevent clamping blocks 31 from disengaging from the sliding hole 302 in the upper and lower directions, so that the height of clamping blocks 31 in the sliding hole 302 remains unchanged, and clamping blocks 31 can only move in the left and right directions within the sliding hole 302. Positioning threaded holes 203 communicating with the outside are opened at both ends of the sliding hole 302. Positioning bolts 29 are threadedly connected to the positioning threaded holes 203. Positioning bolts 29 abut against the side wall of the corresponding clamping block 31. The positioning bolts 29 on both sides can push the clamping blocks 31 to move towards the center, thereby clamping the thickness tester 4.
[0023] In this embodiment, as a preferred option, the top of the clamping block 31 has a through hole 401 that is open to the left and right. A reinforcing bolt 41 is inserted into the through hole 401, and a matching nut is provided to tighten the reinforcing bolt so that the clamping blocks 31 on the left and right sides are connected and fastened together. This further strengthens the stable clamping of the thickness tester 4 by the clamping block 31 and prevents the thickness tester 4 from shaking and falling off during the swinging process of the robotic arm 1. A rubber pad 33 is provided on the bottom of the clamping block 31 facing the thickness tester 4 to increase the friction and ensure that the clamping block 31 clamps stably while preventing the clamping block 31 from causing wear on the side wall of the thickness tester 4.
[0024] In this invention, the working steps of the device are as follows:
[0025] 1. Connect the thickness tester 4. Use the U-bolt 21 at the rear of the connecting plate 3 to fit through the limiting groove 301 and fix the handle 6 of the thickness tester 4 to the connecting plate 3. Then, use the clamping block 31 at the front of the connecting plate 3 to clamp the front part of the thickness tester 4 from the left and right sides. Tighten the fixing bolts 29 from the left and right sides respectively to make it press against the side wall of the clamping block 31, so as to ensure that the thickness tester 4 is firmly clamped between the left and right clamping blocks 31.
[0026] 2. Use the reinforcing bolts 41 to pass through the connecting through holes 401 at the top of the left and right clamping blocks 31, and tighten the corresponding nuts to connect the left and right clamping blocks 31 into a whole.
[0027] 3. The mounting bracket 2 is fixed to the end of the robotic arm 1 by tightening the connecting bolt 11 in the bolt connection hole 101;
[0028] 4. Calibrate the measurement reference of the thickness tester 4, start the robotic arm 1, and measure the thickness of the concrete cover of the steel reinforcement at the target location. It should be noted that during the measurement process, the thickness tester 4 can display the measurement data on the display screen 5. Data from multiple measurements can be recorded in the instrument. After the robotic arm 1 has measured a set of data, the personnel can move the thickness tester 4 down to read the data.
[0029] The specific embodiments provided by this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.
Claims
1. An auxiliary device for installing a rebar cover thickness tester, characterized in that: It includes a connecting assembly for fixing to the end of a robotic arm (1), the connecting assembly including a retainer (2), the retainer (2) being adapted to engage with the end of the robotic arm (1), and bolt connection holes (101) being opened at corresponding positions on the retainer (2) and the end of the robotic arm (1), and being fixedly connected by an adapted connecting bolt (11); The bottom of the card holder (2) is fixed with a connecting plate (3), which is used to connect and fix the thickness tester (4). A fastening mechanism is provided on the rear side of the connecting plate (3). The thickness tester (4) includes a handle (6) located at the rear end. The fastening mechanism is used to fix the handle (6) of the thickness tester (4).
2. The auxiliary device for installing a rebar cover thickness tester according to claim 1, characterized in that: The fastening mechanism includes a U-bolt (21) and a fastening nut (22). The connecting plate (3) has a limiting groove (301) on the left and right sides corresponding to the handle (6) on the rear side. The two screws of the U-bolt (21) slide through the corresponding limiting grooves (301) on both sides. The handle (6) of the thickness tester (4) is located in the U-shaped opening of the U-bolt (21). The fastening nut (22) is threaded from the top of the connecting plate (3) onto the U-bolt (21).
3. The auxiliary device for installing a rebar cover thickness tester according to claim 1 or 2, characterized in that: A clamping mechanism is provided on the front side of the connecting disk (3), which is used to clamp the front part of the thickness tester (4).
4. The auxiliary device for installing a rebar cover thickness tester according to claim 3, characterized in that: The clamping mechanism includes two sets of clamping blocks (31) arranged symmetrically on the left and right. The front side of the connecting plate (3) has a long strip-shaped sliding hole (302) that is open from top to bottom along the left and right direction. The two sets of clamping blocks (31) are slidably arranged in the sliding hole (302). The left and right ends of the sliding hole have positioning threaded holes (203) that communicate with the outside. The positioning threaded holes (203) are threaded with positioning bolts (29). The positioning bolts (29) touch the side wall of the corresponding clamping block (31).
5. The auxiliary device for installing a rebar cover thickness tester according to claim 4, characterized in that: The clamping block (31) is provided with limiting blocks (32) facing the front and back directions on both the upper and lower sides of the sliding hole (302) so that the height of the clamping block (31) in the sliding hole (302) remains unchanged.
6. The auxiliary device for installing a rebar cover thickness tester according to claim 4, characterized in that: The top of the clamping block (31) has a through hole (401) that is open to the left and right. A reinforcing bolt (41) is inserted into the through hole (401), and a matching nut is provided to tighten the reinforcing bolt (41) so that the clamping blocks (31) on the left and right sides are connected and fastened.
7. The auxiliary device for installing a rebar cover thickness tester according to claim 4, characterized in that: A rubber pad (33) is provided on the bottom side of the clamp (31) facing the thickness tester (4).