Steel bar protective layer thickness measuring device
By designing a rebar protective layer thickness measuring device consisting of a connecting block, connecting frame, adjusting frame, and telescopic rod, the problems of low efficiency and high labor intensity in indoor rebar testing were solved, achieving efficient and stable testing and marking results.
Patent Information
- Application Number
- CN202520217700.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-12
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2035-02-12
AI Technical Summary
Existing equipment for detecting the thickness of the concrete cover of steel bars requires frequent erection and movement of scaffolding when testing indoor steel bars, resulting in low testing efficiency, high labor intensity, and a high risk of missed or false detections.
A detection device comprising a connecting block, a connecting frame, an adjusting frame, and a telescopic rod was designed. Combined with a micro pump, a hose, and a nozzle system, it can adapt to detection requirements at different heights and angles. Stable flipping and angle adjustment are achieved through worm gear and motor drive, and the built-in nozzle is used for real-time marking.
It improves testing efficiency, avoids frequent scaffolding construction, reduces the risk of missed and false detections, lowers the labor intensity of manual marking, and enhances the stability and convenience of testing.
Smart Images

Figure CN223710541U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the technical field of building surveying, in particular to a reinforcing steel bar protective layer thickness measuring device. BACKGROUND
[0002] The reinforcing steel bar protective layer thickness measuring device is an instrument for detecting the diameter, position, reinforcing steel bar distribution and reinforcing steel bar protective layer thickness of reinforcing steel bars in reinforced concrete, and is also called a reinforcing steel bar protective layer measuring device or reinforcing steel bar instrument, and is an intelligent nondestructive testing equipment. The reinforcing steel bar protective layer thickness measuring device utilizes electromagnetic induction principle or ultrasonic principle to measure the distance between the reinforcing steel bar and the measuring device through signal emission and reception, so as to determine the thickness of the reinforcing steel bar protective layer.
[0003] During the detection of the reinforcing steel bar protective layer thickness, part of the reinforcing steel bars are located in the ceiling in the room, so that a scaffold or a ladder needs to be erected during the detection, and then due to the large number of reinforcing steel bars, multiple areas need to be monitored, so that the ladder position needs to be constantly moved, which is inconvenient for the user to detect and reduces the work efficiency, and in addition, the area needs to be marked after each detection, so as to avoid missing detection or false detection, and the labor intensity is large. CONTENT OF THE INVENTION
[0004] In view of the defects of the prior art, the application provides a reinforcing steel bar protective layer thickness measuring device, which has the advantages of high detection efficiency and solves the problems in the background art.
[0005] To achieve the above-mentioned purpose, the application provides the following technical scheme: a reinforcing steel bar protective layer thickness measuring device, comprising a detector body, connecting blocks are arranged on the two side surfaces of the detector body, one side of the two connecting blocks away from each other is in contact with a same connecting frame, an adjusting frame is arranged below the connecting frame, an adjusting shaft is rotatably connected between the top ends of the left and right inner side walls of the adjusting frame, and the bottom end of the connecting frame is fixedly connected with the adjusting shaft.
[0006] A liquid storage tank is mounted at the bottom of the adjusting frame, a micro pump is arranged above the liquid storage tank, the output end of the micro pump is fixedly communicated with the liquid storage tank, a hose is fixedly communicated with the output end of the micro pump, and a nozzle is fixedly communicated with the other end of the hose.
[0007] Through the above scheme, through the design of the connecting block and the connecting frame, and the adjustable adjusting frame and the telescopic rod, the device can easily adapt to the detection requirements of different heights and angles, which avoids the need to frequently set up and move the scaffold or ladder, thereby greatly improving the detection efficiency. The built-in miniature pump, hose and nozzle system of the device can mark the detection area while detecting. This not only avoids the risk of missed detection or false detection, but also significantly reduces the labor intensity of manual marking. The design of the adjusting shaft, worm gear and worm makes the detector body and the connecting frame can be stably turned over and adjusted in angle, improving the adjustment stability.
[0008] Further, the connecting frame is connected to the two connecting blocks by external bolts.
[0009] Through the above scheme, through the above setting, the detector body and the connecting frame can be easily detached and separated, and the user can hold the detector body for use.
[0010] Further, the bottom of the adjusting frame is provided with a telescopic rod.
[0011] Through the above scheme, through the setting of the telescopic rod, the user can monitor the area of different heights, improving the user's convenience.
[0012] Further, the bottom end of the telescopic rod is fixedly provided with a controller.
[0013] Through the above scheme, through the setting of the controller, the user can control the electrical components.
[0014] Further, one side of the connecting frame is fixedly connected with a fixed plate, and the nozzle is fixedly connected with the fixed plate.
[0015] Through the above scheme, through the setting of the fixed plate, the stability of the nozzle can be improved, and the output angle of the nozzle can be adjusted according to the adjusting angle of the detector body.
[0016] Further, the outer surface of the adjusting shaft is fixedly connected with a worm gear, the front and rear surfaces of the adjusting frame are rotatably connected with a worm, and the worm is meshingly connected with the worm gear.
[0017] Through the above scheme, through the setting of the worm and the worm gear, the adjustment stability can be improved.
[0018] Further, the front surface of the adjusting frame is provided with a motor, and one end of the worm is fixedly connected with the output end of the motor.
[0019] Through the above scheme, through the setting of the motor, power can be provided for the rotation of the worm.
[0020] Further, the front of the liquid storage tank is fixedly communicated with a supplement pipe, and a sealing cover is threadedly connected to the front end of the supplement pipe.
[0021] Through the above scheme, through the above setting, the user can conveniently supplement the pigment.
[0022] Compared with the prior art, the technical scheme has the following beneficial effects:
[0023] The steel bar protective layer thickness measuring device can easily adapt to detection requirements of different heights and angles through the design of the connecting block and the connecting frame, the adjustable adjusting frame and the telescopic rod, which avoids the need to frequently set up and move a scaffold or a ladder, thereby greatly improving the detection efficiency. The built-in miniature pump, hose and nozzle system of the device can mark the detection area while detecting. This not only avoids the risk of missed detection or false detection, but also significantly reduces the labor intensity of manual marking. The design of the adjusting shaft, worm gear and worm makes the detection instrument body and the connecting frame can be stably turned over and adjusted in angle, thereby improving the adjustment stability. BRIEF DESCRIPTION OF DRAWINGS
[0024] Figure 1 is a three-dimensional schematic view of the overall structure of the present application Figure 1 ;
[0025] Figure 2 is a three-dimensional schematic view of the overall structure of the present application Figure 2 ;
[0026] Figure 3 is a structural view of the connecting frame and the adjusting frame of the present application
[0027] Figure 4 is a structural view of the detection instrument body of the present application
[0028] In the drawings:
[0029] 1, detection instrument body; 2, connecting block; 3, connecting frame; 4, adjusting frame; 5, adjusting shaft; 6, liquid storage tank; 7, miniature pump; 8, hose; 9, nozzle; 10, telescopic rod; 11, controller; 12, fixed plate; 13, worm gear; 14, worm; 15, motor; 16, supplement pipe; 17, sealing cover. DETAILED DESCRIPTION
[0030] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0031] Please refer toFigure 1 、 Figure 2 and Figure 4 The steel bar protection layer thickness measuring device in the embodiment comprises a detector body 1, two connecting blocks 2 are arranged on the two side surfaces of the detector body 1, one surface of the two connecting blocks 2 away from each other is in contact with a same connecting frame 3, the connecting frame 3 is connected with the two connecting blocks 2 through external bolts, through the above arrangement, the detector body 1 and the connecting frame 3 can be conveniently disassembled and separated, and the user can conveniently hold and use the detector body 1.
[0032] Please refer to Figure 1 、 Figure 2 and Figure 3 A adjusting frame 4 is arranged below the connecting frame 3, an adjusting shaft 5 is rotatably connected between the left and right inner side walls at the top of the adjusting frame 4, the bottom end of the connecting frame 3 is fixedly connected with the adjusting shaft 5, through the arrangement of the adjusting shaft 5, the overturning purpose of the detector body 1 and the connecting frame 3 can be achieved, the adjusting effect of the angle of the detector can be achieved, one side surface of the connecting frame 3 is fixedly connected with a fixed plate 12, the nozzle 9 is fixedly connected with the fixed plate 12, through the arrangement of the fixed plate 12, the stability of the nozzle 9 can be improved, and at the same time, the output angle of the nozzle 9 can be adjusted according to the adjusting angle of the detector body 1.
[0033] Please refer to Figure 1 、 Figure 2 and Figure 3 A worm wheel 13 is fixedly connected to the outer surface of the adjusting shaft 5, a worm 14 is rotatably connected between the front and back surfaces of the adjusting frame 4, the worm 14 is meshingly connected with the worm wheel 13, through the arrangement of the worm 14 and the worm wheel 13, the adjusting stability can be improved, a motor 15 is installed on the front surface of the adjusting frame 4, the output end of the motor 15 is fixedly connected with one end of the worm 14, through the arrangement of the motor 15, power can be provided for the rotation of the worm 14.
[0034] Please refer to Figure 1 、 Figure 2 and Figure 3 A liquid storage tank 6 is installed at the bottom of the adjusting frame 4, a micro pump 7 is arranged above the liquid storage tank 6, the output end of the micro pump 7 is fixedly communicated with the liquid storage tank 6, the output end of the micro pump 7 is fixedly communicated with a hose 8, the other end of the hose 8 is fixedly communicated with a nozzle 9, through the above arrangement, the detection area can be marked, and it is convenient for the user to judge whether to detect or whether the detection data is qualified, a supplement pipe 16 is fixedly communicated on the front surface of the liquid storage tank 6, a sealing cover 17 is threadedly connected to the front end of the supplement pipe 16, through the above arrangement, it is convenient for the user to supplement the paint.
[0035] Please refer to Figure 1 、 Figure 2 and Figure 3The bottom of the adjustment frame 4 is equipped with a telescopic rod 10. The telescopic rod 10 allows users to monitor areas at different heights, improving user convenience. The bottom of the telescopic rod 10 is fixedly equipped with a controller 11, which allows users to control electrical components.
[0036] This embodiment of a rebar cover thickness measuring device, through the design of the connecting block 2 and connecting frame 3, as well as the adjustable adjustment frame 4 and telescopic rod 10, allows the device to easily adapt to the testing requirements of different heights and angles. This avoids the need for frequent erection and movement of scaffolding or ladders, thereby greatly improving testing efficiency. The device's built-in micro pump 7, hose 8, and nozzle 9 system can mark the testing area while testing. This not only avoids the risk of missed or false detections but also significantly reduces the labor intensity of manual marking. The design of the adjusting shaft 5, worm gear 13, and worm 14 allows the measuring instrument body 1 and connecting frame 3 to be stably rotated and adjusted in angle, improving adjustment stability.
[0037] The working principle of the above embodiment is as follows: The detector body 1 is fixedly connected to the connecting frame 3 with bolts through the connecting block 2 to ensure a stable connection. Check whether the pigment in the liquid storage tank 6 is sufficient. If insufficient, add pigment through the replenishment tube 16 and tighten the sealing cap 17. Turn on the power of the controller 11 to start the micro pump 7. The micro pump 7 draws pigment from the liquid storage tank 6 and delivers it to the nozzle 9 through the hose 8. As needed, the flow rate of the micro pump 7 is adjusted by the controller 11 to control the marking effect of the nozzle 9. As needed, the user drives the worm gear 14 to rotate through the motor 15. The worm gear 14 meshes with the worm wheel 13, driving the adjusting shaft 5 to rotate. The rotation of the adjusting shaft 5 causes... The connecting frame 3 and the detector body 1 rotate around the adjusting shaft 5 to achieve precise angle adjustment. The design of the fixing plate 12 ensures that the nozzle 9 and the detector body 1 adjust their angles synchronously to maintain the accuracy of the marking. The telescopic rod 10 can be adjusted up and down according to the height of the detection area to ensure that the detector body 1 is in the optimal detection position. The detector body 1 uses electromagnetic induction or ultrasonic principles to emit signals and receive reflected signals from the steel bars. Based on the time difference or intensity of the signals, the distance between the steel bars and the detector body 1 is calculated to determine the thickness of the steel bar protective layer. At the same time, the nozzle 9 sprays pigment in the detection area for marking, which is convenient for subsequent viewing and recording of the test results.
[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0039] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A device for measuring the thickness of the concrete cover of reinforcing bars, comprising a measuring instrument body (1), characterized in that: The detector body (1) has connecting blocks (2) on both sides. The two connecting blocks (2) are in contact with the same connecting frame (3) on the side away from each other. An adjustment frame (4) is provided below the connecting frame (3). An adjustment shaft (5) is rotatably connected between the left and right inner walls of the top of the adjustment frame (4). The bottom of the connecting frame (3) is fixedly connected to the adjustment shaft (5). The bottom of the adjustment frame (4) is equipped with a liquid storage tank (6), and a micro pump (7) is provided above the liquid storage tank (6). The output end of the micro pump (7) is fixedly connected to the liquid storage tank (6), and a hose (8) is fixedly connected to the output end of the micro pump (7). The other end of the hose (8) is fixedly connected to a nozzle (9).
2. The device for measuring the thickness of the concrete cover of reinforcing bars according to claim 1, characterized in that: The connecting frame (3) is connected to the two connecting blocks (2) by external bolts.
3. The device for measuring the thickness of the concrete cover of reinforcing bars according to claim 1, characterized in that: The bottom of the adjustment frame (4) is equipped with a telescopic rod (10).
4. The device for measuring the thickness of the concrete cover of reinforcing bars according to claim 3, characterized in that: A controller (11) is fixedly installed at the bottom end of the telescopic rod (10).
5. The device for measuring the thickness of the concrete cover of reinforcing bars according to claim 1, characterized in that: A fixing plate (12) is fixedly connected to one side of the connecting frame (3), and the nozzle (9) is fixedly connected to the fixing plate (12).
6. The device for measuring the thickness of the concrete cover of reinforcing bars according to claim 1, characterized in that: A worm gear (13) is fixedly connected to the outer surface of the adjusting shaft (5), and a worm (14) is rotatably connected between the front and rear sides of the adjusting frame (4), and the worm (14) meshes with the worm gear (13).
7. The device for measuring the thickness of the concrete cover of reinforcing bars according to claim 1, characterized in that: A motor (15) is mounted on the front of the adjustment frame (4), and the output end of the motor (15) is fixedly connected to one end of the worm gear (14).
8. The device for measuring the thickness of the concrete cover of reinforcing bars according to claim 1, characterized in that: The front of the liquid storage tank (6) is fixedly connected to a replenishment tube (16), and the front end of the replenishment tube (16) is threadedly connected to a sealing cap (17).