A device for detecting the flatness of a concrete structure

Abstract

The utility model discloses a kind of for concrete structure flatness detection device, it is related to flatness detection technical field, including bottom plate and fixedly installed level gauge on bottom plate, the four corners of the bottom plate are provided with gyro wheel respectively, adjusting assembly that adjusting gyro wheel is installed on the bottom plate and ensures that the bottom plate is level;The bottom plate is provided with telescopic probe and control unit, the bottom of the bottom plate is provided with two calibration units, and the telescopic probe includes fixed cylinder that can be fixedly connected on the bottom plate, and the fixed cylinder is slidably provided with detection rod.The utility model makes that device can be easily adjusted to horizontal state by adjusting assembly, guarantees the stability of bottom plate before detection, telescopic probe can sensitively capture tiny ground unevenness, and by control unit and calibration unit, corresponding lime can be sprayed according to the detected concave-convex type to mark, not only improve work efficiency, also provide powerful reference for subsequent construction repair.

Description

Technical Field

[0001] This utility model relates to the field of flatness detection technology, and in particular to a device for detecting the flatness of concrete structures. Background Technology

[0002] The smoothness of cement concrete pavement can be defined as the elevation change of the pavement surface that induces vibrations in passing vehicles. It is an important indicator for evaluating pavement performance and maintenance quality. Changes in the smoothness index can reflect the overall quality of the pavement. Most pavement defects affect smoothness, therefore, smoothness testing is a very important part of pavement construction and maintenance.

[0003] The document with publication number CN218211305U discloses a device for detecting the flatness of cast-in-place cement concrete layers on bridge decks. Lime powder is injected into a storage cylinder, and pushing the handle moves the mounting plate. The flatness of the bridge deck can be detected using an inclination sensor. When the flatness of the road surface is found to be unqualified, a buzzer sounds an alarm. At the same time, pressing the connecting rod moves the sealing block away from the leakage trough, thereby allowing the lime powder in the storage cylinder to be discharged from the leakage port. This allows for the rapid measurement and marking of the flatness of the bridge deck.

[0004] In the aforementioned prior art, the testing equipment does not integrate a leveling function. In the initial state, it is necessary to ensure flatness to improve the accuracy of subsequent testing. It also relies on manual control to spread lime powder to mark uneven areas. However, this method requires repeated machine stops, which reduces testing efficiency. In addition, lime powder marking cannot intuitively distinguish between protrusions and depressions, resulting in a lack of targeted repair work. Utility Model Content

[0005] The purpose of this invention is to solve the problems existing in the prior art by proposing a device for detecting the flatness of concrete structures.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A device for testing the flatness of concrete structures includes a base plate and a level fixedly mounted on the base plate. Rollers are respectively provided at the four corners of the base plate, and an adjustment component is installed on the base plate to adjust the rollers to ensure that the base plate is level.

[0008] The base plate is equipped with a telescopic probe and a control unit. Two calibration units are provided at the bottom of the base plate. The telescopic probe includes a fixed cylinder that can be fixedly connected to the base plate. A detection rod is slidably provided on the fixed cylinder. A ball bearing is embedded at the bottom end of the detection rod. A pressure sensor is fixedly installed on the inner top wall of the fixed cylinder. A spring is fixedly connected between the top end of the detection rod and the pressure sensor.

[0009] Preferably, both calibration units include an ash hopper fixedly connected to the base plate, the bottom of the ash hopper being connected to an ash outlet pipe, and the end of the ash outlet pipe facing the ball bearing at the bottom of the detection rod.

[0010] Preferably, the control unit includes a microcontroller mounted on the base plate, a miniature solenoid valve is installed on the ash discharge pipe, the pressure sensor is connected to the microcontroller via a wire to transmit pressure change data, the microcontroller calculates the pressure difference and triggers a logic judgment, and the microcontroller is electrically connected to the miniature solenoid valve via a wire to realize the on / off state of the miniature solenoid valve.

[0011] Preferably, the outer surface of the detection rod is provided with an axial guide keyway, and the inner wall of the fixed cylinder is provided with a guide protrusion that matches the axial guide keyway, the guide protrusion extending into the axial guide keyway.

[0012] Preferably, the adjusting assembly includes a nut fixedly connected to the base plate, an adjusting screw internally connected to the nut, a base rotatably disposed at the bottom end of the adjusting screw, and a roller rotatably disposed within the base.

[0013] Preferably, a limiting rod is fixedly connected to the top of the base, and the limiting rod passes through the base plate and slides between the base plate and the base plate.

[0014] Preferably, the two ash storage hoppers respectively contain high-development quick-drying lime and photosensitive erasable lime, which are used to mark the concave and convex areas, respectively.

[0015] Preferably, the two ash hoppers are made of transparent material.

[0016] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0017] 1. In this application, the ball bearing design at the bottom of the detection rod, combined with the precise cooperation of the spring and the pressure sensor, enables the device to sensitively detect minute unevenness of the ground, thereby achieving accurate measurement of the flatness of the concrete structure.

[0018] 2. In this application, the control unit and calibration unit can spray the corresponding high-development quick-drying lime or photosensitive erasable lime for marking according to the detected unevenness type, which not only improves work efficiency, but also provides a strong reference for subsequent construction and repair.

[0019] 3. In this application, the device can be easily adjusted to a horizontal state by adjusting the components, which ensures the stability of the base plate before detection and thus further improves the accuracy of detection. Attached Figure Description

[0020] Figure 1This utility model provides a three-dimensional structural schematic diagram of a device for detecting the flatness of concrete structures.

[0021] Figure 2 This utility model provides a cross-sectional view of a telescopic probe for a concrete structure flatness testing device.

[0022] Figure 3 This utility model provides a schematic diagram of the adjustment component structure for a concrete structure flatness detection device;

[0023] Figure 4 This utility model provides a schematic diagram of a ash storage hopper structure for a concrete structure flatness testing device.

[0024] Legend: 1. Base plate; 2. Level; 3. Roller; 4. Telescopic probe; 41. Fixed cylinder; 42. Detection rod; 43. Ball bearing; 44. Pressure sensor; 45. Spring; 46. Axial guide keyway; 47. Guide protrusion; 5. Ash hopper; 6. Ash discharge pipe; 7. Microcontroller; 8. Miniature solenoid valve; 9. Nut; 10. Adjusting screw; 11. Base; 12. Limiting rod. Detailed Implementation

[0025] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0026] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0027] like Figure 1-4 As shown, this utility model provides a device for testing the flatness of concrete structures, including a base plate 1 and a level 2 fixedly installed on the base plate 1. Rollers 3 are respectively provided at the four corners of the base plate 1, and an adjustment component is installed on the base plate 1 to ensure that the base plate 1 is level.

[0028] The base plate 1 is equipped with a telescopic probe 4 and a control unit. Two calibration units are provided at the bottom of the base plate 1. The telescopic probe 4 includes a fixed cylinder 41 that can be fixedly connected to the base plate 1. A detection rod 42 is slidably provided on the fixed cylinder 41. A ball bearing 43 is embedded at the bottom end of the detection rod 42. A pressure sensor 44 is fixedly installed on the inner top wall of the fixed cylinder 41. A spring 45 is fixedly connected between the top end of the detection rod 42 and the pressure sensor 44.

[0029] Specifically, the ball bearing 43 at the bottom of the detection rod 42 contacts the surface being measured. The ball bearing 43 contacts the road surface. The unevenness of the ground causes the detection rod 42 to move up and down. The change in the compression of the spring 45 triggers the signal of the pressure sensor 44. When encountering a depression, the compression of the spring 45 increases, the pressure of the spring 45 decreases, and the reading of the pressure sensor 44 decreases. When encountering a bulge, the compression of the spring 45 decreases, the pressure of the spring 45 increases, and the reading of the pressure sensor 44 increases, thus realizing the detection of flatness.

[0030] In this embodiment, the control unit includes a microcontroller 7 mounted on the base plate 1, a miniature solenoid valve 8 mounted on the ash discharge pipe 6, and a pressure sensor 44 connected to the microcontroller 7 via a wire to transmit pressure change data. The microcontroller 7 calculates the pressure difference and triggers logical judgment. The microcontroller 7 is electrically connected to the miniature solenoid valve 8 via a wire to realize the on / off state of the miniature solenoid valve 8. The microcontroller 7 is a Raspberry PiPico microcontroller 7, which supports Python / C programming and can calculate the pressure difference in real time and trigger logical judgment. The miniature solenoid valve 8 is a FESTO VUVG series product with a response time ≤10ms, which can control the on / off state or mechanical action based on the pressure difference.

[0031] In this embodiment, both calibration units include a ash hopper 5 fixedly connected to the base plate 1. The bottom of the ash hopper 5 is connected to an ash outlet pipe 6. The end of the ash outlet pipe 6 faces the ball bearing 43 at the bottom of the detection rod 42. The two ash hoppers 5 respectively store high-developing quick-drying lime and photosensitive erasable lime. The high-developing quick-drying lime and photosensitive erasable lime are used to calibrate the concave area and the convex area, respectively. The two ash hoppers 5 are transparent material components.

[0032] Specifically, the transparent ash hopper 5 allows direct observation of the remaining amount, the microcontroller 7 determines the type of depression or convexity based on the pressure difference ΔP, and outputs a signal to the corresponding solenoid valve. The solenoid valve response time is ≤10ms. The lime is precisely sprayed through the ash outlet pipe 6 to the contact point of the ball bearing 43. The high-development, fast-drying lime is suitable for depression repair and positioning, while the photosensitive erasable lime is suitable for temporary marking of raised areas and post-construction cleaning.

[0033] In this embodiment, the outer surface of the detection rod 42 is provided with an axial guide keyway 46, and the inner wall of the fixed cylinder 41 is provided with a guide protrusion 47 that matches the axial guide keyway 46. The guide protrusion 47 extends into the axial guide keyway 46.

[0034] Specifically, the guide keyway and the guide protrusion 47 inside the fixed cylinder 41 cooperate to form an anti-rotation sliding pair structure, which constrains the detection rod 42 to move only along the axial direction and avoids lateral friction interference.

[0035] In this embodiment, the adjustment component includes a nut 9 fixedly connected to the base plate 1, an adjustment screw 10 internally connected to the nut 9, a base 11 rotatably disposed at the bottom end of the adjustment screw 10, and a roller 3 rotatably disposed within the base 11.

[0036] Specifically, rotating the adjusting screw 10 causes the base 11 to rise and fall, adjusting the height of the roller 3 so that the level 2 on the base plate 1 displays a horizontal state, ensuring that the base plate 1 is in a horizontal state before testing, in order to ensure the accuracy of subsequent testing.

[0037] In this embodiment, a limiting rod 12 is fixedly connected to the top of the base 11, and the limiting rod 12 passes through the base plate 1 and slides between the base plate 1 and the base plate 1.

[0038] Specifically, the limit rod 12 slides with the base plate 1 to prevent the base 11 from deflecting when the screw rotates, thus ensuring vertical lifting stability.

[0039] How to use and how to work this device:

[0040] First, rotate the adjusting screw 10 to drive the base 11 to rise and fall vertically. The base 11 is constrained to deflect by the limiting rod 12. Adjust the height of the four corner rollers 3 until the level 2 on the base plate 1 shows a horizontal state, providing a horizontal reference for testing.

[0041] Subsequently, the roller 3 drives the device to move, and the ball 43 at the bottom of the detection rod 42 contacts the road surface. The unevenness of the ground causes the detection rod 42 to slide axially. The change in the compression of the spring 45 triggers the signal of the pressure sensor 44. When encountering a depression, the ball 43 sinks, the compression of the spring 45 increases, the pressure of the spring 45 decreases, and the reading of the pressure sensor 44 decreases. When encountering a bulge, the ball 43 rises, the compression of the spring 45 decreases, the pressure of the spring 45 increases, and the reading of the pressure sensor 44 increases.

[0042] The microcontroller 7 receives the values ​​from the pressure sensor 44 in real time and determines the type of unevenness. Based on the unevenness type, it triggers the opening and closing of the corresponding micro solenoid valve 8. In the uneven area, the micro solenoid valve 8 on the ash storage hopper 5 containing high-developing and fast-drying lime is opened, and the high-developing and fast-drying lime is sprayed onto the uneven area to form a mark. In the uneven area, the micro solenoid valve 8 on the ash storage hopper 5 containing photosensitive erasable lime is opened, and the photosensitive erasable lime is sprayed onto the uneven area to form a mark. It does not require manual control to spread lime powder to mark uneven areas, avoids repeated shutdowns, and improves detection efficiency. In addition, uneven and uneven areas can be calibrated separately, making it easy to distinguish between unevenness and unevenness, which facilitates subsequent repair work.

[0043] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A device for detecting the flatness of concrete structures, characterized in that: Includes a base plate (1) and a level (2) fixedly installed on the base plate (1). Rollers (3) are respectively provided at the four corners of the base plate (1). An adjustment assembly is installed on the base plate (1) to ensure that the base plate (1) is level. The base plate (1) is provided with a telescopic probe (4) and a control unit. The bottom of the base plate (1) is provided with two calibration units. The telescopic probe (4) includes a fixed cylinder (41) that can be fixedly connected to the base plate (1). The fixed cylinder (41) is slidably provided with a detection rod (42). The bottom end of the detection rod (42) is embedded with a ball (43). A pressure sensor (44) is fixedly installed on the inner top wall of the fixed cylinder (41). A spring (45) is fixedly connected between the top end of the detection rod (42) and the pressure sensor (44).

2. The device for detecting the flatness of concrete structures according to claim 1, characterized in that: Both calibration units include a ash hopper (5) fixedly connected to the base plate (1), and the bottom of the ash hopper (5) is connected to an ash outlet pipe (6), with the end of the ash outlet pipe (6) facing the ball bearing (43) at the bottom of the detection rod (42).

3. The device for detecting the flatness of concrete structures according to claim 2, characterized in that: The control unit includes a microcontroller (7) mounted on the base plate (1), a micro solenoid valve (8) is installed on the ash discharge pipe (6), the pressure sensor (44) is connected to the microcontroller (7) through a wire to transmit pressure change data, the microcontroller (7) calculates the pressure difference and triggers logic judgment, and the microcontroller (7) is electrically connected to the micro solenoid valve (8) through a wire to realize the opening and closing of the micro solenoid valve (8).

4. The device for detecting the flatness of concrete structures according to claim 1, characterized in that: The outer surface of the detection rod (42) is provided with an axial guide keyway (46), and the inner wall of the fixed cylinder (41) is provided with a guide protrusion (47) that matches the axial guide keyway (46). The guide protrusion (47) extends into the axial guide keyway (46).

5. The device for detecting the flatness of concrete structures according to claim 1, characterized in that: The adjustment assembly includes a nut (9) fixedly connected to the base plate (1), an adjustment screw (10) is internally threaded onto the nut (9), a base (11) is rotatably provided at the bottom end of the adjustment screw (10), and a roller (3) is rotatably provided inside the base (11).

6. The device for detecting the flatness of concrete structures according to claim 5, characterized in that: A limiting rod (12) is fixedly connected to the top of the base (11), and the limiting rod (12) passes through the base plate (1) and slides between the base plate (1).

7. The device for detecting the flatness of concrete structures according to claim 2, characterized in that: The two ash storage hoppers (5) contain high-development quick-drying lime and photosensitive erasable lime respectively. The high-development quick-drying lime and photosensitive erasable lime are used to mark the concave area and the convex area respectively.

8. The device for detecting the flatness of concrete structures according to claim 2, characterized in that: The two ash hoppers (5) are made of transparent material.

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