A laser marker for detecting over- or under-pouring of concrete surface on track base

Abstract

This utility model relates to the field of track construction and discloses a laser marker for detecting over- or under-pouring of track foundation concrete. It includes a crossbeam marker, with laser indicators detachably mounted on the side walls of the crossbeam marker via hexagonal screws. A laser ranging sensor is installed at the bottom of the crossbeam marker, and a horizontal sensor display module is installed at the top. In this utility model, the laser indicators on both sides of the crossbeam marker are precisely aligned with the tunnel wall reference line. The horizontal sensor display module ensures the marker is level. Four laser ranging sensors simultaneously collect multiple sets of data from the same concrete cross-section, providing a complete view of the cross-sectional contours and effectively avoiding the omission of local over- or under-pouring issues due to single-point measurements. The overall structure is lightweight and easy to install and disassemble, significantly improving the efficiency and data accuracy of track foundation concrete pouring detection, and providing reliable support for construction quality control.

Description

Technical Field

[0001] This utility model relates to the field of track construction, and in particular to a laser marker for detecting over- or under-pouring of concrete surfaces on track bases. Background Technology

[0002] The quality of the concrete pouring for the track base directly affects the accuracy of track laying and the long-term operational stability of the line. Over-pouring or under-pouring of the concrete surface can lead to deviations in the flatness of the track base surface, which in turn can cause hidden dangers such as train vibration and increased noise, and even affect the service life of the line. Therefore, it is necessary to accurately detect over-pouring or under-pouring of the concrete surface during the construction process.

[0003] The existing technology has the following drawbacks: Currently, the detection of track base concrete pouring mostly relies on manual measurement using tools such as spirit levels and measuring tapes. This is not only cumbersome and inefficient, but also greatly affected by human error, making it difficult to fully cover key measurement points of the cross-section. It is easy to miss local over-pouring or under-pouring problems, which cannot meet the needs of efficient and accurate quality control in track base construction. Therefore, a laser marker for detecting over-pouring and under-pouring of track base concrete surface is proposed to solve the above problems. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a laser marker for detecting over- or under-pouring of concrete surfaces on track bases, aiming to solve the problems of cumbersome and inefficient manual single-point measurement operations in the existing technology.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a laser marker for detecting over- or under-pouring of concrete surface on track base, comprising a crossbeam marker, a laser indicator detachably mounted on the side wall of the crossbeam marker via hexagonal screws, a laser ranging sensor at the bottom of the crossbeam marker, a horizontal sensor display module at the top of the crossbeam marker, a power switch at the top of the crossbeam marker, a charging connector at the top of the crossbeam marker, a PC communication port at the top of the crossbeam marker, a power supply battery detachably mounted on the bottom of the crossbeam marker via hexagonal screws, a microcontroller control box module detachably mounted on the bottom of the crossbeam marker via hexagonal screws, and an adjustment mechanism on the inner wall of the crossbeam marker.

[0006] As a further description of the above technical solution:

[0007] The adjustment mechanism includes an I-shaped block, which is fixedly connected to the inner wall of the crossbeam frame. A movable plate is slidably connected to the outer wall of the I-shaped block. A rectangular groove is provided on the inner wall of the crossbeam frame. A slider is fixedly connected to the outer wall of the movable plate. An adjusting screw is threadedly connected to the outer wall of the slider. Scale lines are provided on the outer wall of the crossbeam frame.

[0008] As a further description of the above technical solution:

[0009] The adjusting screw is rotatably connected to the outer wall of the crossbeam frame via a bracket.

[0010] As a further description of the above technical solution:

[0011] The laser rangefinder sensor is detachably mounted on the bottom of the movable plate using hex screws.

[0012] As a further description of the above technical solution:

[0013] Multiple sets of laser ranging sensors are provided, and these multiple sets of laser ranging sensors are equidistantly distributed below the crossbeam frame.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, the laser pointers on both sides of the crossbeam frame are precisely aligned with the reference line of the tunnel wall. The horizontal sensor display module ensures that the frame is level. Four laser ranging sensors simultaneously collect multiple sets of data from the same concrete cross section, which can completely present the contour of the cross section. This effectively avoids the problem of missing local over-pouring or under-pouring due to single-point measurement. The overall structure is lightweight and easy to install and disassemble, which significantly improves the efficiency and data accuracy of track foundation concrete pouring inspection, and provides reliable support for construction quality control.

[0016] 2. In this utility model, the adjustment mechanism consisting of an I-shaped block, a slider, and an adjusting screw, combined with the millimeter-level scale lines on the outer wall of the crossbeam frame, can conveniently achieve precise left and right adjustment of the laser rangefinder. The staff can intuitively read the adjustment distance without additional measuring tools, ensuring that the sensor can accurately align with the key measurement points of different cross sections. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of a laser marker for detecting over- or under-pouring of concrete surface on track base, as proposed in this utility model.

[0018] Figure 2 This is a schematic diagram showing the bottom end of the crossbeam frame of a laser marker frame for detecting over- or under-pouring of concrete surface on track base, as proposed in this utility model.

[0019] Legend:

[0020] 1. Crossbeam frame; 2. Laser indicator; 3. Laser rangefinder sensor; 4. Horizontal sensor display module; 5. Power switch; 6. Charging connector; 7. PC communication port; 8. Power supply battery; 9. Microcontroller control box module; 10. Hex socket screw; 11. I-beam block; 12. Moving plate; 13. Rectangular slot; 14. Slider; 15. Adjusting screw; 16. Scale line. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Reference Figures 1-2This utility model provides an embodiment of a laser marker frame for detecting under- or over-pouring of concrete surfaces on a track base. The frame includes a crossbeam frame 1, which is a long, rigid structure made of aluminum with a wall thickness of 1mm and a polished black oxidized surface. Its dimensions are 170cm long × 7cm wide × 3cm high, forming a regular rectangular shape. It serves as the installation and load-bearing foundation for all functional components of the device. Laser indicators 2 are detachably mounted on the side walls of the crossbeam frame 1 using hexagonal screws 10. One laser indicator 2 is installed on each side of the crossbeam frame 1, for a total of one pair. The laser indicators 2 are assembled together using machined accessories to ensure that the laser emission centerline of the laser indicator 2 is concentric with the cross-sectional center of the frame. The laser indicator 2 emits a fixed laser beam. The laser rangefinder 3 is precisely aligned with the existing clear reference lines on both sides of the tunnel wall, allowing it to measure the same target cross-section of the track foundation concrete. A laser rangefinder 3 is installed at the bottom of the crossbeam frame 1, simultaneously collecting data from four key measurement points on the same concrete cross-section to form complete cross-sectional elevation and contour data. This avoids missing over- or under-pouring issues due to single-point measurements. A horizontal sensor display module 4 is installed at the top of the crossbeam frame 1, capturing its tilt status and providing a basis for adjusting the frame's posture. This ensures the crossbeam frame 1 remains horizontal, maintaining consistent measurement benchmarks from multiple laser rangefinders and preventing issues caused by benchmark tilt. To mitigate the detection errors, a power switch 5 is installed at the top of the crossbeam frame 1. This power switch 5 is the main switch for the device's power supply system. By pressing this switch, operators can start and stop the entire detection system. A charging connector 6 is also located at the top of the crossbeam frame 1, allowing connection to an external power source via a compatible charger to replenish the depleted battery pack, ensuring sufficient battery life and preventing interruptions in detection work due to battery depletion. This is suitable for the need for continuous, long-term detection at track construction sites. A PC communication port 7 is also located at the top of the crossbeam frame 1. This port allows for batch storage of cross-sectional data from single or multiple detections to the PC, creating structured data files. The bottom of the crossbeam frame 1... The power supply battery 8 is detachably installed on the hex screw 10. The power supply battery 8 is the built-in battery pack of the entire system. The battery pack is composed of 6 Tesla 18650 batteries with a total capacity of 12AH and a voltage of 14.8V, which can support the device to work continuously for a long time and avoid frequent interruptions of the detection process due to insufficient power. The bottom of the crossbeam frame 1 is detachably installed with a microcontroller control box module 9 via the hex screw 10. The microcontroller control box module 9 controls the operation of the entire system. The microcontroller's data acquisition function connects to 4 laser rangefinders 3 and 2 laser pointers 2. Through comprehensive data acquisition, processing, and numerical display through a designed LCD screen, it can also achieve two-way communication with the PC software in real time. An adjustment mechanism is provided on the inner wall of the crossbeam frame 1.

[0023] Reference Figures 1-2 The adjustment mechanism includes an I-shaped block 11, which is fixedly connected to the inner wall of the crossbeam frame 1. A movable plate 12 is slidably connected to the outer wall of the I-shaped block 11. A corresponding slot is provided on the slider 14 to allow the slider 14 to slide along the outer wall of the I-shaped block 11. A rectangular slot 13 is provided on the inner wall of the crossbeam frame 1. The rectangular slot 13 allows the connecting wire harness to pass through the movable plate 12 and connect to the laser rangefinder 3. The rectangular slot 13 ensures that the connecting wire harness will not be damaged during the movement of the movable plate 12. The outer wall of the movable plate 12 is fixedly connected to the wire harness. The middle of the slider 14 has a groove corresponding to the adjusting screw 15, which allows the slider 14 to move along the outer wall of the adjusting screw 15. The outer wall of the slider 14 is threadedly connected to the adjusting screw 15. The outer wall of the crossbeam frame 1 is provided with a scale line 16. The scale line 16 is a millimeter scale, which can be used to visually read the sliding distance of the laser rangefinder. The adjusting screw 15 is rotatably connected to the outer wall of the crossbeam frame 1 through the bracket.

[0024] Reference Figures 1-2 The laser rangefinder 3 is detachably installed at the bottom of the movable plate 12 via the internal hex screw 10. Multiple sets of laser rangefinder 3 are provided, and the multiple sets of laser rangefinder 3 are equidistantly distributed below the crossbeam frame 1.

[0025] Working principle: Before starting the testing work, the staff first checks the power supply battery 8 in the electrical installation cavity at the bottom of the crossbeam frame 1 to confirm that the 12AH / 14.8V battery pack composed of 6 Tesla 18650 batteries has sufficient power. The power supply battery 8 and the microcontroller control box module 9 are then firmly fixed to the bottom of the crossbeam frame 1 with hex screws 10 to ensure reliable electrical connection between the two and the internal circuit of the device. If the battery power is insufficient, the adapter charger can be connected through the charging connector 6 at the top of the crossbeam frame 1 to replenish the battery pack, avoiding work interruption due to power failure during the testing process, and adapting to the needs of long-term continuous testing at the track construction site.

[0026] After preparation, the staff member carries the crossbeam marker 1 and places it upright 10-20cm above the cast-in-place concrete surface of the track base. They then press the power switch 5 at the top to start the entire detection system. The indicator light on the power switch 5 illuminates, indicating successful power-on of the visual feedback device. Once powered on, the laser pointers 2 on both sides of the crossbeam marker 1 activate simultaneously, emitting directional lasers. The staff member manually adjusts the marker's orientation to ensure the lasers are precisely aligned with the pre-set, clearly marked reference lines on both sides of the tunnel wall. This establishes a unified detection benchmark, ensuring the four laser rangefinders 3 below the crossbeam marker 1 are accurately aligned with the same concrete target section, preventing misalignment of detection points due to marker position deviation. While adjusting the marker's orientation, the level sensor display module 4 at the top of the crossbeam marker 1 monitors the marker's horizontal alignment in real time. If the marker is tilted, the module will automatically... The display screen intuitively shows the tilt state. The staff can fine-tune the frame according to the display results until the horizontal sensor display module 4 indicates that the frame is in a horizontal position, ensuring that the measurement reference of all laser rangefinders 3 is consistent and eliminating the detection error caused by the tilt of the reference. If further precise adjustment of the lateral position of the laser rangefinders 3 is required, the staff can rotate the adjusting screw 15 to the end of the beam frame 1, which extends to the outside of the beam frame 1. This will drive the slider 14 to slide smoothly along the I-shaped block 11 fixed on the inner wall of the beam frame 1. The moving plate 12 will drive the laser rangefinders 3 to move synchronously. During the adjustment process, the staff can intuitively read the sliding distance of the laser rangefinders 3 through the millimeter-level scale line 16 on the outer wall of the beam frame 1. At the same time, the rectangular groove 13 opened on the inner wall of the beam frame 1 provides room for the connection harness of the laser rangefinders 3 to move, preventing the moving plate 12 from pulling the harness when it moves.

[0027] By emitting lasers and receiving reflected signals from the cast-in-place concrete surface, the system simultaneously collects raw data on the vertical distance between the laser rangefinder 3 and the concrete surface at their respective locations. This data is transmitted in real-time to the microcontroller control module 9 via connecting cables. The module can comprehensively process and calculate the raw data from the laser rangefinder 3, comparing it with the preset standard value of the track design base surface, and converting it into an intuitive over- or under-pouring deviation value. When the measured distance is less than the standard distance, it is determined that the concrete is over-pouring; when the measured distance is greater than the standard distance, it is determined that the concrete is under-pouring. Subsequently, the microcontroller control module 9 combines the calculated deviation value with the horizontal status data of the benchmark transmitted by the horizontal sensor display module 4, and sends it together to the display screen of the horizontal sensor display module 4. The system provides real-time feedback to staff, allowing them to quickly grasp the current concrete pouring quality and adjust the pouring volume or leveling operations in a timely manner to avoid rework. If it is necessary to retain the test data for construction quality traceability and analysis, staff can connect to a PC via the PC communication port 7 at the top of the beam frame 1. The microcontroller control box module 9 establishes two-way communication with the PC software through the 232 communication protocol, storing the complete data of one or more tests in batches to the local PC to form a structured data file. This data can then be further uploaded to the construction data management platform as traceable data for project acceptance and long-term operation and maintenance. After a single test process is completed, staff press the power switch 5 again to cut off the power supply to the entire system, put the frame away and organize it, and complete the test.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A laser marker for detecting over- or under-pouring of concrete surface on track base, comprising a crossbeam marker (1), characterized in that: A laser pointer (2) is detachably installed on the side wall of the crossbeam frame (1) via hexagonal screws (10). A laser rangefinder (3) is installed at the bottom of the crossbeam frame (1). A horizontal sensor display module (4) is installed at the top of the crossbeam frame (1). A power switch (5) is installed at the top of the crossbeam frame (1). A charging connector (6) is installed at the top of the crossbeam frame (1). A PC communication port (7) is installed at the top of the crossbeam frame (1). A power supply battery (8) is detachably installed at the bottom of the crossbeam frame (1) via hexagonal screws (10). A microcontroller control box module (9) is detachably installed at the bottom of the crossbeam frame (1) via hexagonal screws (10). An adjustment mechanism is installed on the inner wall of the crossbeam frame (1).

2. The laser marker for detecting over- or under-pouring of concrete surface on track base as described in claim 1, characterized in that: The adjustment mechanism includes an I-shaped block (11), which is fixedly connected to the inner wall of the crossbeam frame (1). A movable plate (12) is slidably connected to the outer wall of the I-shaped block (11). A rectangular groove (13) is provided on the inner wall of the crossbeam frame (1). A slider (14) is fixedly connected to the outer wall of the movable plate (12). An adjusting screw (15) is threadedly connected to the outer wall of the slider (14). A scale line (16) is provided on the outer wall of the crossbeam frame (1).

3. The laser marker for detecting over- or under-pouring of concrete surface on track base as described in claim 2, characterized in that: The adjusting screw (15) is rotatably connected to the outer wall of the crossbeam frame (1) via a bracket.

4. The laser marker for detecting over- or under-pouring of track base concrete surface according to claim 1, characterized in that: The laser rangefinder (3) is detachably mounted on the bottom of the movable plate (12) by means of an internal hex screw (10).

5. A laser marker for detecting over- or under-pouring of concrete surface on track base as described in claim 1, characterized in that: The laser ranging sensor (3) is provided in multiple sets, and the multiple sets of laser ranging sensors (3) are equally distributed below the crossbeam frame (1).

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