Rapid testing trolley for ground flatness

Abstract

This utility model relates to a rapid ground flatness detection trolley device, comprising a mobile trolley, an attitude sensor, a laser rangefinder, a data acquisition and processing unit, a display unit, a removable smart battery, and a GPS navigation module. The attitude sensor detects the trolley's attitude angles (pitch and roll) in real time, and the laser rangefinder measures the distance from the trolley to the ground in real time. The GPS module provides high-precision location information, the data acquisition and processing unit uses a fusion algorithm to calculate the elevation difference in real time and evaluate flatness, and the display unit presents the measurement data, location information, and processing results in real time. The battery module provides power to all sensors, the data processing unit, and the display unit. This utility model device can achieve continuous and rapid detection of ground flatness over large areas, significantly improving detection efficiency, convenience, and site location information.

Description

Technical Field

[0001] This utility model belongs to the field of ground flatness detection technology, and relates to a rapid ground flatness detection trolley. Background Technology

[0002] In the engineering field, ground flatness is a key indicator for buildings, roads, and other projects, affecting operational safety. For example, in subway transportation, localized depressions or bulges in the track can cause vehicles to bump and deviate from their course, and in severe cases, derailment, leading to rollovers or collisions that directly threaten passenger and equipment safety, causing significant economic losses. Traditional inspection methods utilize tools such as levels, requiring operators to sample and select points for measurement and manually record data, which can easily result in low data accuracy and affect the flatness of the site. Traditional manual inspection is also inefficient.

[0003] Chinese utility model patent CN221297520U discloses a ground flatness testing device, including a ground testing trolley. An inverted stepped countersunk column is longitudinally welded to the center of the inner cavity of the flatness testing box. A testing upright is longitudinally inserted into the interior of the stepped countersunk column. The bottom end of the testing upright penetrates the ground testing trolley and is welded with a balance bar. A ground flatness testing auxiliary wheel is installed on the bottom surface of the balance bar. A limit ring is welded to the upper circumference of the testing upright. A detection spring is welded to the top surface of the limiting ring and sleeved around the periphery of the detection pole. The top of the detection spring is welded to the inner top wall of the stepped countersunk column. A pressure sensor that triggers and cooperates with the detection pole is provided above the stepped countersunk column. This technical solution can detect the flatness of the ground through the action of the pressure sensor, the trolley plate, and the detection spring, and the vibration transmission of the trolley plate. However, when there are many debris on the ground, the trolley plate may vibrate under the influence of the debris, which may affect the accuracy of the detection results. Utility Model Content

[0004] To address the issue that when there are many debris on the ground, the trolley board may vibrate due to the debris, which could affect the accuracy of the test results, this invention proposes a rapid ground flatness testing trolley. This effectively solves the problem in the prior art where the trolley board may vibrate due to the debris, which could affect the accuracy of the test results.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a rapid ground flatness detection trolley includes a vehicle body, a control box is arranged at the center of the upper side of the vehicle body, the control box is equipped with an attitude sensor for real-time monitoring of the vehicle body's attitude angle, a GPS module for controlling the vehicle body's travel route, a data acquisition and processing unit for processing ground height data and vehicle body attitude angle data, and a wireless communication module for transmitting data, and the vehicle body is also equipped with multiple laser rangefinders for measuring the height of the vehicle body from the ground.

[0006] Furthermore, the vehicle chassis frame is triangular, and three wheels are provided on the lower side of the vehicle body, with the three wheels located at the three corners of the vehicle chassis.

[0007] Furthermore, a power drive mechanism and a steering mechanism are provided on the lower side of the vehicle chassis. The power drive mechanism is connected to two of the wheels, the steering mechanism is connected to the other wheel, and the steering mechanism and the power drive mechanism are electrically connected to the GPS navigation module.

[0008] Furthermore, four laser rangefinders are provided, one of which is located at the center of the lower side of the vehicle body, and the other three laser rangefinders are distributed in a triangle at the three ends of the vehicle body.

[0009] Furthermore, a detachable battery slide rail is provided on the upper side of the vehicle body, and a detachable smart battery is slidably connected to the detachable battery slide rail. The smart battery is electrically connected to the vehicle body, the laser rangefinder, and the control box.

[0010] Furthermore, a display unit is provided on the upper side of the control box, and the display unit is electrically connected to the laser rangefinder, the removable smart battery, and the control box.

[0011] Compared with existing technologies, this utility model has the following advantages: This utility model realizes rapid measurement and processing of data of the test site through the vehicle body, multiple laser rangefinders, attitude sensors, and data acquisition and processing units, which improves the work efficiency of operators when measuring the flatness data of the test site. Compared with traditional methods, the data collected by laser rangefinders and attitude sensors ensures the stability and reliability of detection accuracy. The removable smart battery and removable battery slide rail enable rapid battery replacement, ensuring that the vehicle body can work continuously and greatly improving the detection speed. Attached Figure Description

[0012] Figure 1 This is a perspective view of the present utility model;

[0013] Figure 2 This is a schematic diagram of the internal structure of the control box of this utility model;

[0014] Figure 3 This is a perspective view of the detachable battery of this utility model;

[0015] Figure 4 This is a distribution diagram of the walking device of this utility model.

[0016] In the diagram: 1. Vehicle body; 2. Attitude sensor; 3. Laser rangefinder; 4. Data acquisition and processing unit; 5. Control box; 6. Removable smart battery; 7. GPS navigation module; 8. Removable battery slide rail; 9. Communication module; 10. Display unit; 11. Steering mechanism; 12. Power drive mechanism. Detailed Implementation

[0017] 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.

[0018] Example 1

[0019] like Figure 1 , Figure 2 As shown, a rapid ground flatness detection trolley includes a vehicle body 1. A control box 5 is set at the center of the upper side of the vehicle body 1. The control box 5 is equipped with an attitude sensor 2 (HWT6033) for real-time monitoring of the attitude angle of the vehicle body 1, a GPS navigation module 7 for controlling the travel route of the vehicle body 1, a data acquisition and processing unit 4 for processing ground height data and vehicle body 1 attitude angle data, and a wireless communication module 9 for transmitting data. The vehicle body 1 is also equipped with multiple laser rangefinders 3 for measuring the height of the vehicle body 1 from the ground.

[0020] The GPS navigation module (N303-5B) outputs NMEA format location information via UART, synchronized with attitude and ranging data. The wireless communication module (LPMS-B2) wirelessly transmits IMU data to a handheld terminal or cloud platform via BLE for remote monitoring. The data acquisition unit 4 uses a control board (such as STM32H743) to acquire three data streams via DMA, run an extended Kalman filter (EKF) to fuse attitude angles, laser elevation difference, and GPS coordinates, and calculates ground elevation deviation and flatness indices in real time.

[0021] like Figure 1 , Figure 2As shown, in this embodiment, the chassis frame of the vehicle body 1 is triangular, and three wheels are provided on the lower side of the vehicle body 1, with the three wheels located at the three corners of the chassis of the vehicle body 1.

[0022] The vehicle body 1 has a power drive mechanism 12 and a steering mechanism 11 on its lower side. The power drive mechanism 12 is connected to two of the wheels, and the steering mechanism 11 is connected to the other wheel. The steering mechanism 11 and the power drive mechanism 12 are electrically connected to the GPS navigation module.

[0023] like Figure 1 , Figure 2 as well as Figure 3 As shown in this embodiment, a detachable battery slide rail 8 is provided on the upper side of the vehicle body 1. A detachable smart battery is slidably connected to the detachable battery slide rail 8. The smart battery is electrically connected to the vehicle body 1, the laser rangefinder 3, and the control box 5. The detachable smart battery 6 provides working power for all sensors, data processing units, and display units 10, and also has a power monitoring function, which can display the battery power in real time and remind the operator to replace the battery in time. When replacing the detachable smart battery 6, the operator can slide the detachable battery to detach it from the detachable battery slide rail 8, and then slide the new detachable smart battery 6 back onto the detachable battery slide rail 8 to complete the quick replacement of the detachable smart battery 6.

[0024] In actual use, the operator places vehicle 1 at the starting position of the site to be tested. After starting vehicle 1, it moves within the testing area under the guidance of GPS navigation module 7 via power drive mechanism and steering mechanism. While vehicle 1 is moving, attitude sensor and laser rangefinder 3 can collect vehicle 1 attitude angle, vehicle 1 height above ground and position information in real time, and transmit these data to data acquisition and processing unit 4 for processing. Data acquisition and processing unit 4 processes the measured data in real time with algorithm to calculate the elevation difference of the ground and evaluate the flatness. Wireless communication module 9 can transmit the measurement data, position information and processed flatness evaluation results to remote terminal for data query and data sharing. The operator can judge the flatness of the site based on the processed data results, thus providing an accurate basis for subsequent construction or land leveling work.

[0025] The formula for elevation difference is: Δz = H i +(d i cosβcosθ-d i+1 cosβcosθ)

[0026] Where H i This indicates the vertical distance from the selected point to the ground using laser rangefinder 3;

[0027] d is the distance from laser rangefinder 3 to the ground;

[0028] θ is the pitch angle of vehicle body 1;

[0029] β is the roll angle of vehicle body 1.

[0030] Example 2 differs from Example 1 in that:

[0031] In this embodiment, as Figure 1 , Figure 2 As shown, there are four laser rangefinders 3. One of the laser rangefinders 3 is located at the center of the lower side of the vehicle body 1, and the other three laser rangefinders 3 are distributed in a triangle at the three ends of the vehicle body 1.

[0032] When in use, multiple laser rangefinders 3 can measure the height data of the center of the vehicle body 1 and the surrounding area of ​​the vehicle body 1, which increases the amount of data that the laser rangefinders 3 can measure and further improves the accuracy of the staff in understanding and calculating the flatness of the test site.

[0033] Example 3 differs from Example 1 in that:

[0034] like Figure 1 As shown, in this embodiment, a display unit 10 is provided on the upper side of the control box 5 (804791.GB2), and the display unit 10 is electrically connected to the laser rangefinder 3, the removable smart battery 6 and the control box 5.

[0035] During use, the main control board (STM32H743) sends the fused data such as elevation difference, attitude angle, GPS coordinates, and flatness level to the (804791.GB2) control box. The control box has a built-in 8611 module, which is responsible for mapping the received data into LED dot matrix graphics or characters. The current measurement results are displayed in real time through 32 high-brightness LEDs in a scrolling or segmented manner. The display unit 10 can display the vehicle body 1 to ground elevation information, attitude angle, measured site location information, data acquisition and processing unit 4 processing results, and the power information of the removable smart battery 6, which improves the convenience for operators when acquiring data.

[0036] Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. A rapid testing trolley for ground flatness, comprising a trolley body (1), characterized in that: A control box (5) is provided at the center of the upper side of the vehicle body (1). The control box (5) is equipped with an attitude sensor (2) for real-time monitoring of the attitude angle of the vehicle body (1), a GPS navigation module (7) for controlling the travel route of the vehicle body (1), a data acquisition and processing unit (4) for processing ground height data and attitude angle data of the vehicle body (1), and a wireless communication module (9) for transmitting data. The vehicle body (1) is also equipped with multiple laser rangefinders (3) for measuring the height of the vehicle body (1) from the ground.

2. The rapid ground flatness testing trolley according to claim 1, characterized in that: The chassis frame of the vehicle body (1) is triangular, and three wheels are provided on the lower side of the vehicle body (1), with the three wheels located at the three corners of the chassis of the vehicle body (1).

3. The rapid ground flatness testing trolley according to claim 2, characterized in that: The vehicle body (1) has a power drive mechanism (12) and a steering mechanism (11) on its lower side. The power drive mechanism (12) is connected to two of the wheels, and the steering mechanism (11) is connected to the other wheel. The steering mechanism (11) and the power drive mechanism (12) are electrically connected to the GPS module.

4. The rapid ground flatness testing trolley according to claim 2, characterized in that: There are four laser rangefinders (3), one of which is located at the center of the lower side of the vehicle body (1), and the other three laser rangefinders (3) are distributed in a triangle at the three ends of the vehicle body (1).

5. The rapid testing trolley for ground flatness according to claim 1, characterized in that: A detachable battery slide rail (8) is provided on the upper side of the vehicle body (1), and a detachable smart battery (6) is slidably connected on the detachable battery slide rail (8). The smart battery is electrically connected to the vehicle body (1), the laser rangefinder (3), and the control box (5).

6. The rapid testing trolley for ground flatness according to any one of claims 1, 4, or 5, characterized in that: The control box (5) has a display unit (10) on its upper side, and the display unit (10) is electrically connected to the laser rangefinder (3), the removable smart battery (6) and the control box (5).

Images