An integrated detection device and detection method for solidified soil subgrade

Abstract

The present invention relates to the technical field of road detection, and discloses a comprehensive detection device and detection method for a solidified soil subgrade, including a locking frame and a detection box. The detection box is arranged on the locking frame. The top end of a support pipe is installed with a Beidou positioning module. The detection box includes a box shell. At the lower end inside the box shell, a conveying component is installed, and near one side of the conveying component inside the box shell, a ground penetrating radar is installed. At the upper end inside the box shell near the conveying component, an energy spectrometer is installed, and near one side of the sample output component inside the detection box, a sampling component is installed. By means of the energy spectrometer and the ground penetrating radar, the mixing uniformity and compaction degree of the solidified soil subgrade can be synchronously detected. Through the Beidou positioning module, the measured position can be synchronously positioned, directly displayed on a liquid crystal display screen, and simultaneously transmitted to a background terminal device, so as to monitor the construction quality of the solidified soil subgrade in real time, and significantly improve the detection efficiency and detection quality of the solidified soil subgrade.

Description

Technical Field

[0001] The present invention relates to the technical field of road detection, and particularly to a comprehensive detection device and method for solidified soil subgrade. Background Technique

[0002] The degree of compaction of the subgrade is an index that needs to be strictly controlled in highway construction. The quality of the subgrade compaction directly affects the strength, overall stability and service life of the subgrade. If the requirements are not met, it will greatly affect the future use performance of the highway. And the evenness of soil mixing in the subgrade directly affects the compaction degree. Therefore, before the subgrade is officially used, it will go through strict inspections, and only the products that pass the inspections will be allowed to be used. The situations detected by traditional testing institutions only focus on the hardness of the road surface, resulting in the lack of thorough inspection of the mixing degree and hardness inside the subgrade. This leads to the problem of partial subgrade fragmentation during the later use of the subgrade.

[0003] The Chinese patent discloses a device and method for quickly detecting the compaction degree of filled soil subgrade (publication number: CN109763476A). The hammer head of this patented technology is conical, and the rear end can be connected to a calibration rod and a weight limiting rod; the calibration rod can be connected to the falling hammer through screws, and the weight limiting rod can be connected to the weight; ensuring the durability and accuracy of the device, and can quickly measure the compaction degree of the filled soil subgrade. However, it cannot detect the mixing evenness of the soil subgrade, the detection of the compaction degree is inconvenient, and it cannot perform positioning and synchronous monitoring. At the same time, the damage to some relatively soft subgrades is still unavoidable, which leads to the need to repair the detected road surface later, which is time-consuming and laborious. Summary of the Invention

[0004] The present invention provides a comprehensive detection device and method for solidified soil subgrade, which can effectively solve the problems raised in the above background technique.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] The detection device includes a locking frame, a detection box is arranged on the locking frame, a pull rod is arranged on one side of the locking frame, the pull rod is rotatably connected to the locking frame, a moving component and an ultrasonic component are arranged at the bottom end of the locking frame, a push rod component is arranged on the side of the detection box away from the pull rod, a support pipe is arranged at the upper end of the detection box, a Beidou positioning module is arranged at the top end of the support pipe, a conveying component is installed at the lower end inside the detection box, and a ground penetrating radar is installed on one side of the detection box close to the conveying component, an energy spectrometer is installed at the upper end inside the detection box close to the conveying component, a sample output component is arranged on one side of the detection box close to the energy spectrometer, and a sampling component is installed on one side of the box shell close to the sample output component. The locking frame is used to lock the detection box to prevent damage to the detection box caused by collisions and other problems. When performing detection, the detection device can be connected to an external vehicle or directly pushed by hand. The ground penetrating radar consists of a signal processor, a data memory, a radar receiver, a radar transmitter, a separator, and an antenna. The radar transmitter emits radio frequency signals, which are then received by the radar receiver and analyzed and processed by the signal processor, and the analyzed data is transmitted to the data memory. By emitting radio frequency signals through the ground penetrating radar, the compaction degree of the soil subgrade can be detected. The Beidou positioning module consists of a data register, a Beidou transmitter module, and a Beidou receiver module, which can accurately locate the sampling position and driving position during the detection process.

[0007] The push rod component includes a set of outer sleeves, and inner sleeves are respectively arranged inside each outer sleeve. The inner sleeves are slidably connected to the outer sleeves. A hand-tightening screw is arranged at the junction of the outer sleeve and the inner sleeve. A liquid crystal display screen is arranged at the upper end of the outer sleeve. A handle is arranged on one side of the upper end of the outer sleeve close to the liquid crystal display screen. The lower ends of each inner sleeve are respectively connected to a fixed block. A rotating head is arranged at the junction of the inner sleeve and the fixed block. The rotating head and the fixed block are fixedly connected by a locking screw. The fixed block is fixedly connected to the locking frame. When manual pushing of the detection device is required, the handle can be pushed to move. During the moving process, the length between the inner sleeve and the outer sleeve can also be adjusted. After the adjustment is completed, tightening the hand-tightening screw can fix the length between the inner sleeve and the outer sleeve, so that it will not be too strenuous during the pushing process. At the same time, the liquid crystal display screen will collect data transmitted from the energy spectrometer and the radar device, which can be directly observed by people to detect data changes. During the pushing process, the angle between the inner sleeve and the locking frame can also be adjusted to fully adapt to detection under various ground conditions and various force conditions.

[0008] The moving component includes moving wheels, which are rotatably connected to the expansion shaft. The expansion shaft is a multi-section structure, and each section inside the expansion shaft is slidably connected. Several expansion wheels are arranged inside the moving wheels. The expansion wheels are multi-section structures, and each section on the expansion wheels is respectively connected by expansion scrolls. The side where the expansion wheels are close to each other is a wedge-shaped structure. The expansion wheels are respectively rotatably connected to each section of the expansion shaft. The expansion shaft is connected to the locking frame. A telescopic hydraulic rod is arranged inside the expansion shaft, and the output end of the telescopic hydraulic rod is fixedly connected to one end on the outer side of the expansion shaft. The telescopic hydraulic rod is connected to the ultrasonic component through a wire. When the ultrasonic component detects a soft state on the ground, it will cause the telescopic hydraulic rod to work and the expansion shaft to expand and contract, thereby bringing out the expansion wheels on the expansion shaft. The expansion wheels will expand and maintain the same radius as the moving wheels, increasing the contact area between the moving component and the ground, reducing damage to the roadbed, and at the same time avoiding the problem of the detection device collapsing during the detection process.

[0009] The sampling component includes a first electric cylinder. A sampling motor and a gearbox are arranged at the bottom end of the first electric cylinder. The input end of the gearbox is connected to the output end of the sampling motor. A fixed rod is fixedly connected to the output end of the gearbox. An externally threaded sampling cylinder is fixedly connected to the bottom end of the fixed rod. A conical head is fixedly connected to one side of the bottom end of the externally threaded sampling cylinder. The top end of the first electric cylinder is fixed inside the detection box. When the first electric cylinder works, it can drive the sampling motor and the gearbox to move. During the movement, the sampling motor rotates and transmits power into the gearbox. The gearbox acts on the fixed rod with the power, and the fixed rod will rotate accordingly. The conical head is inserted into the roadbed, and the externally threaded sampling cylinder will also sink as the first electric cylinder moves, and collect the sampled sample inside the externally threaded sampling cylinder. Finally, the output end of the first electric cylinder moves upward to recover the material into the detection box.

[0010] The sample output component includes a sample output motor, which is arranged inside the detection box. The output end of the sample output motor is fixedly connected to an externally threaded drill bit, and one end on the outer side of the sample output motor is fixedly connected to a third electric cylinder. The cylinder body part of the third electric cylinder is fixedly connected to the inner wall of the detection box. The output end of the third electric cylinder moves closer to the externally threaded sampling cylinder. The sample output motor runs to drive the externally threaded drill bit to rotate. When the first electric cylinder rises, it will cause the externally threaded drill bit to probe into the externally threaded sampling cylinder. As it rotates, the taken sample will fall on the conveying component, and the conveying component will move with the sample and send it to the area to be detected.

[0011] The conveying assembly includes a lead screw motor which is arranged at the inner bottom end of the detection box. The output end of the lead screw motor is fixedly connected with a ball screw. The ball screw is rotatably connected with the detection box. A nut pair is arranged on the outer side of the ball screw. The nut pair meshes with the ball screw. The upper end of the nut pair is fixedly connected with a lower plate. The upper end of the lower plate is connected with a folding frame. The upper end of the folding frame is provided with an upper plate. And a second electric cylinder is arranged inside the folding frame. The upper end of the upper plate is provided with a sample tray. The sample tray is slidably connected with the inner wall of the detection box. When the sampled sample is sent into the detection box, the lead screw motor works to drive the ball screw to rotate. The nut pair meshes with the ball screw, enabling the nut pair to move. The nut pair will drive the sample tray to move. After the sample tray obtains the sampled sample, it will move and finally move below the energy spectrometer. Subsequently, the second electric cylinder operates, enabling the folding frame to rise near the sample output assembly, making it easier for the sample output assembly to obtain the sample.

[0012] The ultrasonic assembly includes an ultrasonic transmitter which is fixedly connected with a locking frame. Ultrasonic receiving boxes are respectively arranged on both sides of the ultrasonic transmitter. The ultrasonic receiving boxes are slidably connected with the locking frame. A sound sensing film is respectively arranged inside each ultrasonic receiving box. One side of the sound sensing film is fixedly connected with the ultrasonic receiving box. A moving connecting rod is arranged on the side of the sound sensing film away from the ultrasonic receiving box. The moving connecting rods are respectively slidably connected with the ultrasonic receiving boxes through springs. A moving magnetic strip is arranged at one end of the moving connecting rod away from the sound sensing film. The moving magnetic strip is arranged inside a power generation coil. The power generation coil is arranged on the ultrasonic receiving box. The power generation coil is connected with a rectifier through a wire. The rectifier is arranged on the locking frame. The rectifier is respectively connected with a telescopic hydraulic rod and a liquid crystal display through wires. During the moving process, the ultrasonic transmitter emits ultrasonic waves. The ultrasonic waves will enter the ground and bounce back. The reflected ultrasonic waves will fall on the sound sensing film. The sound sensing film will generate vibrations. During the vibration process, the moving connecting rod will be driven to move. During the moving process, the moving magnetic strip will be driven to move. During the moving process, an electric current will appear in the power generation coil. The electric current will enter the rectifier. The rectifier senses the current change and adjusts the power supply duration according to the magnitude of the generated current, thereby controlling the telescopic length of the telescopic hydraulic rod. When the ground is relatively soft, the rebounding ultrasonic waves will greatly reduce the vibration. The vibration generated by the sound sensing film will also be greatly reduced. The generated electricity will decrease. And the length of the telescopic hydraulic rod extended controlled by the rectifier will increase accordingly. On the contrary, the length of the telescopic hydraulic rod extended controlled by the rectifier will also increase. At the same time, the generated current information will also be transmitted to the liquid crystal display to complement the data generated by the radar device.

[0013] A detection method for a solidified soil subgrade, the detection method includes the following steps:

[0014] Step 1: When conducting detection, the detection device is located on the subgrade to be detected. A radio frequency with a known waveform is generated by a radar transmitter, separated by a separator and then transmitted to an antenna. The antenna then radiates this electromagnetic wave directionally into the ground and receives the reflected waves from different medium interfaces underground. When the electromagnetic wave propagates in the medium, its path, electromagnetic field strength, and waveform change with the electromagnetic properties of the medium it passes through. Based on the time, amplitude, waveform, and frequency of the received echo, the compaction degree of the subgrade is judged. Through the difference in radar wave frequency between the original soil profile and the slope after vibro-compaction, the difference in compaction degree is reflected, and then the compaction degree of the subgrade is determined. The detection principle is as follows: The ground penetrating radar cannot directly identify density and compaction degree, which is achieved based on the change in the dielectric constant. Since the change in density and compaction degree leads to the change in the dielectric constant, and the subgrade mixture consists of three-phase media of solid, liquid, and gas, the dielectric constant of the subgrade mixture is related to the root mean square and volume of the dielectric constants of the three-phase media that make it up. The formula is as follows:

[0015] (1)

[0016] In the above formula (1), is the dielectric constant of the subgrade mixture, 、 、 are the dielectric constants of the solid, liquid, and gas three-phase media respectively, 、 、 are the volume ratios of the solid, liquid, and gas three-phase media respectively. Obviously;

[0017] The density formula of the subgrade mixture is as follows:

[0018] (2)

[0019] In the above formula (2), is the density and volume of the subgrade mixture, is the density and volume of the solid, is the density and volume of the liquid, is the density and volume of the air

[0020] Through formulas (1) and (2), the dielectric constant and density of the subgrade base mixture can be calculated; the compaction degree is calculated based on the dielectric constant and density.

[0021] Step 2: The sampling component obtains a sample and transports it to the sample tray via the sample output component. Subsequently, the conveying component will send the sample under the energy spectrometer;

[0022] Step 3: Use a vacuum system to evacuate the sample chamber. In a vacuum environment, emit an electron beam from an ion source to bombard the surface of the sample, exciting the test soil to emit characteristic X-rays.

[0023] Detect the X-rays through an X-ray detector. According to the intensity of the characteristic X-rays, track the content and distribution of phosphorus elements in the curing agent, thereby determining the mixing uniformity, and display the mixing uniformity of the soil subgrade on a liquid crystal display screen and send it to the background terminal device.

[0024] The detection principle is as follows: Obtain the content of phosphorus elements in the test soil by measuring the intensity of X-rays. The intensity of X-rays is obtained through a quantitative analysis formula for the observed intensity of X-rays by calculating the initial intensity of X-rays and considering the conditions of X-ray absorption and fluorescence:

[0025] ;

[0026] In the above formula, is a constant, is the backscattering correction factor, is the emission rate of X-rays, is the ionization cross-section, is Avogadro's constant, is the atomic value, is the absorption correction factor, is the fluorescence correction factor. Activate the Beidou positioning component, record the position, store the data, and transmit it into the background terminal.

[0027] Step 4: Emit ultrasonic waves. The reflected energy of the ultrasonic waves controls the traveling width of the wheels, and the contact area of the wheels changes with the change of the reflected ultrasonic wave energy.

[0028] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The present invention can synchronously detect the mixing uniformity and compaction degree of the solidified soil subgrade through an energy spectrometer and a ground penetrating radar. Through the Beidou positioning module, the measured position can be synchronously located, directly displayed on a liquid crystal display screen, and simultaneously transmitted to the background terminal device, real-time monitoring the construction quality of the solidified soil subgrade, significantly improving the detection efficiency and detection quality of the solidified soil subgrade.

[0029] 2. The present invention adopts a structure that can automatically adjust the traveling wheel width according to the road conditions. This structure can ensure that during the traveling process, the detection device can always maintain a certain distance from the subgrade, avoiding damage to the sampling component caused by the detection device moving up and down during the detection process, and also avoiding detection error problems caused by the instability of the vehicle body during the detection process. At the same time, the expansion wheel has its own shock absorption effect, and the vehicle body can be kept stable without adding other structures.

[0030] 3. The present invention adopts a structure in which an ultrasonic component controls a moving component. This ultrasonic component can not only cause the moving component to expand or contract, but also detect the ground during movement, achieving a full - scale scan of the roadbed, assisting the radar device in presenting data, and corroborating the detection of the radar device. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention, and do not constitute a limitation to the present invention. In the drawings:

[0032] Figure 1 is a three - dimensional structure schematic diagram of the present invention;

[0033] Figure 2 is a schematic diagram of the internal structure of the detection box of the present invention;

[0034] Figure 3 is a schematic diagram of the internal structure of the push rod component of the present invention;

[0035] Figure 4 is a schematic diagram of the ultrasonic component structure of the present invention;

[0036] Figure 5 is a schematic diagram of the internal structure of the moving component of the present invention;

[0037] Figure 6 is a schematic diagram of the conveying component structure of the present invention;

[0038] Figure 7 is a schematic diagram of the sample - output component structure of the present invention;

[0039] Figure 8 is a schematic diagram of the sampling component structure of the present invention;

[0040] Figure 9 is a schematic diagram of the expansion wheel structure of the present invention;

[0041] Figure 10 is a schematic diagram of the detection process structure of the present invention;

[0042] Reference Numerals in the Figures: 1, detection box; 2, pull rod; 3, locking frame; 4, support tube; 5, Beidou positioning module; 6, push rod assembly; 601, outer sleeve tube; 602, inner sleeve tube; 603, hand-tightening screw rod; 604, liquid crystal display screen; 605, handle; 606, fixed block; 607, rotating head; 7, moving assembly; 701, moving wheel; 702, expansion shaft; 703, expansion wheel; 704, expansion roll sheet; 705, telescopic hydraulic rod; 8, ultrasonic assembly; 801, ultrasonic transmitter; 802, ultrasonic receiving box; 803, sound-sensing film; 804, moving connecting rod; 805, moving magnetic strip; 806, power generation coil; 807, rectifier; 9, conveying assembly; 901, lead screw motor; 902, ball screw; 903, nut pair; 904, lower plate; 905, folding frame; 906, upper plate; 907, second electric cylinder; 908, sample tray; 10, ground penetrating radar; 11, energy spectrometer; 12, sample output assembly; 1201, sample output motor; 1202, external thread drill bit; 1203, third electric cylinder; 13, sampling assembly; 1301, first electric cylinder; 1302, sampling motor; 1303, gear box; 1304, fixed rod; 1305, external thread sampling cylinder; 1306, conical head. Detailed Embodiment

[0043] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0044] Please refer to Figures 1 - 10 , the present invention provides a technical solution:

[0045] The detection device includes a locking frame 3, a detection box 1 is arranged on the locking frame 3, a pull rod 2 is arranged on one side of the locking frame 3, the pull rod 2 is rotatably connected to the locking frame 3, a moving component 7 and an ultrasonic component 8 are arranged at the bottom end of the locking frame 3, a push rod component 6 is arranged on the side of the detection box 1 away from the pull rod 2, a support pipe 4 is arranged at the upper end of the detection box 1, a Beidou positioning module 5 is arranged at the top end of the support pipe 4, a conveying component 9 is installed at the lower end inside the detection box 1, and a ground penetrating radar 10 is installed on one side of the detection box 1 close to the conveying component 9, an energy spectrometer 11 is installed at the upper end inside the detection box 1 close to the conveying component 9, a sample output component 12 is arranged on one side of the detection box 1 close to the energy spectrometer 11, and a sampling component 13 is installed on one side of the box shell 1 close to the sample output component 12. The locking frame is used to lock the detection box to prevent damage to the detection box caused by collisions and other problems. When performing detection, the detection device can be connected to an external vehicle or directly pushed by hand. The ground penetrating radar consists of a signal processor, a data memory, a radar receiver, a radar transmitter, a separator, and an antenna. The radar transmitter emits an electrical frequency signal, which is then received by the radar receiver, analyzed and processed by the signal processor, and the analyzed data is transmitted to the data memory. The compactness of the soil subgrade can be detected by emitting a radio frequency signal through the ground penetrating radar. The Beidou positioning module consists of a data register, a Beidou transmitter module, and a Beidou receiver module, which can accurately locate the sampling position and driving position during the detection process.

[0046] The push rod component 6 includes a group of outer sleeves 601. An inner sleeve 602 is respectively arranged in each outer sleeve 601. The inner sleeve 602 is slidably connected to the outer sleeve 601. A hand-tightening screw 603 is arranged at the junction of the outer sleeve 601 and the inner sleeve 602. A liquid crystal display screen 604 is arranged at the upper end of the outer sleeve 601. A handle 605 is arranged on one side of the upper end of the outer sleeve 601 close to the liquid crystal display screen 604. The lower end of each inner sleeve 602 is respectively connected to a fixed block 606. A rotating head 607 is arranged at the junction of the inner sleeve 602 and the fixed block 606. The rotating head 607 and the fixed block 606 are fixedly connected by a locking screw. The fixed block 606 is fixedly connected to the locking frame 3. When it is necessary to manually push the detection device, the handle can be pushed to move. During the moving process, the length between the inner sleeve and the outer sleeve can be adjusted at the same time. After the adjustment is completed, tighten the hand-tightening screw to complete the length between the inner sleeve and the outer sleeve, so that it will not be too strenuous during the pushing process. At the same time, the liquid crystal display screen will collect data transmitted from the energy spectrometer and the radar device, which can be directly observed by people to see the data changes. During the pushing process, the angle between the inner sleeve and the locking frame can also be adjusted to fully adapt to the detection under various ground conditions and various force conditions.

[0047] The moving component 7 includes moving wheels 701, the moving wheels 701 are rotatably connected to the expansion shaft 702. The expansion shaft 702 is a multi-section structure, and each section inside the expansion shaft 702 is slidably connected. A number of expansion wheels 703 are arranged inside the moving wheels 701. The expansion wheels 703 are multi-section structures, and each section on the expansion wheels 703 is respectively connected by an expansion film 704. The sides of the expansion wheels 703 close to each other are wedge-shaped structures. The expansion wheels 703 are respectively rotatably connected to each section on the expansion shaft 702. The expansion shaft 702 is connected to the locking frame 3. A telescopic hydraulic rod 705 is arranged inside the expansion shaft 702. The output end of the telescopic hydraulic rod 705 is fixedly connected to one end outside the expansion shaft 702. The telescopic hydraulic rod 705 is connected to the ultrasonic component 8 through a wire. When the ultrasonic component detects a soft state on the ground, it will cause the telescopic hydraulic rod to work and the expansion shaft to expand and contract, thereby bringing out the expansion wheels on the expansion shaft. The expansion wheels will expand and maintain the same radius as the moving wheels, increasing the contact area between the moving component and the ground, reducing the damage to the roadbed, and at the same time avoiding the problem of the detection device collapsing.

[0048] The sampling component 13 includes a first electric cylinder 1301. A sampling motor 1302 and a gearbox 1303 are arranged at the bottom end of the first electric cylinder 1301. The input end of the gearbox 1303 is connected to the output end of the sampling motor 1302. A fixed rod 1304 is fixedly connected to the output end of the gearbox 1303. An externally threaded sampling cylinder 1305 is fixedly connected to the bottom end of the fixed rod 1304. A conical head 1306 is fixedly connected to one side of the bottom end of the externally threaded sampling cylinder 1305. The top end of the first electric cylinder 1301 is fixed inside the detection box 1. When the first electric cylinder works, it can drive the sampling motor and the gearbox to move. During the movement, the sampling motor rotates and transmits power into the gearbox. The gearbox acts on the fixed rod with the power, and the fixed rod will rotate accordingly. The conical head inserts into the roadbed, and the externally threaded sampling cylinder will also sink as the first electric cylinder moves, and collect the sampled samples in the externally threaded sampling cylinder. Finally, the output end of the first electric cylinder moves upward to collect the materials back into the detection box.

[0049] The sample output component 12 includes a sample output motor 1201. The sample output motor 1201 is arranged inside the detection box 1. An externally threaded drill bit 1202 is fixedly connected to the output end of the sample output motor 1201. And a third electric cylinder 1203 is fixedly connected to one end outside the sample output motor 1201. The cylinder part of the third electric cylinder 1203 is fixedly connected to the inner wall of the detection box 1. The output end of the third electric cylinder moves closer to the externally threaded sampling cylinder. The sample output motor runs to drive the externally threaded drill bit to rotate. When the first electric cylinder rises, the externally threaded drill bit will probe into the externally threaded sampling cylinder. As it rotates, the taken samples will fall on the conveying component, and the conveying component will carry the samples to move to the area to be detected.

[0050] The conveying assembly 9 includes a lead screw motor 901, the lead screw motor 901 is arranged at the inner bottom end of the detection box 1, the output end of the lead screw motor 901 is fixedly connected with a ball screw 902, the ball screw 902 is rotationally connected with the detection box 1, a nut pair 903 is arranged on the outer side of the ball screw 902, the nut pair 903 is engaged with the ball screw 902, the upper end of the nut pair 903 is fixedly connected with a lower plate 904, the upper end of the lower plate 904 is connected with a folding frame 905, the upper end of the folding frame 905 is provided with an upper plate 906, and a second electric cylinder 907 is arranged inside the folding frame 905, the upper end of the upper plate 906 is provided with a sample tray 908, the sample tray 908 is slidably connected with the inner wall of the detection box 1. When the sampled sample is sent into the detection box, the lead screw motor works to drive the ball screw to rotate, the nut pair is engaged with the ball screw, so that the nut pair can move, the nut pair will drive the sample tray to move. When the sample tray obtains the sampled sample, it will move and finally move to below the energy spectrometer. Subsequently, the second electric cylinder operates, so that the folding frame can be raised near the sample discharging assembly, making it easier for the sample discharging assembly to obtain the sample.

[0051] The ultrasonic component 8 includes an ultrasonic transmitter 801, which is fixedly connected to the locking frame 3. On both sides of the ultrasonic transmitter 801, there are ultrasonic receiving boxes 802 respectively. The ultrasonic receiving boxes 802 are slidably connected to the locking frame 3. Inside each ultrasonic receiving box 802, there is a sound-sensing film 803. One side of the sound-sensing film 803 is fixedly connected to the ultrasonic receiving box 802. On the side of the sound-sensing film 803 away from the ultrasonic receiving box 802, there is a moving connecting rod 804. The moving connecting rod 804 is slidably connected to the ultrasonic receiving box 802 through springs respectively. At one end of the moving connecting rod 804 away from the sound-sensing film 803, there is a moving magnetic strip 805. The moving magnetic strip 805 is arranged inside a power generation coil 806. The power generation coil 806 is arranged on the ultrasonic receiving box 802. The power generation coil 806 is connected to a rectifier 807 through a wire. The rectifier 807 is arranged on the locking frame 3. The rectifier 807 is connected to the telescopic hydraulic rod 705 and the liquid crystal display screen 604 through wires respectively. During the moving process, the ultrasonic transmitter emits ultrasonic waves, which will enter the ground and bounce back. The reflected ultrasonic waves will fall on the sound-sensing film, and the sound-sensing film will vibrate. During the vibration process, the moving connecting rod will be driven to move. During the moving process, the moving magnetic strip will be driven to move. During the moving process, an electric current will appear in the power generation coil. This current will enter the rectifier. The rectifier senses the current change and adjusts the power supply duration according to the magnitude of the generated current, so as to control the telescopic length of the telescopic hydraulic rod. When the ground is relatively soft, the rebounding ultrasonic waves will greatly reduce the vibration, the vibration generated by the sound-sensing film will also be greatly reduced, the generated electricity will decrease, and the length of the telescopic hydraulic rod extended controlled by the rectifier will increase accordingly. On the contrary, the length of the telescopic hydraulic rod extended controlled by the rectifier will decrease. At the same time, the generated current information will also be transmitted to the liquid crystal display to complement the data generated by the radar device.

[0052] A detection method for a solidified soil subgrade, the detection method includes the following steps:

[0053] Step 1: When conducting detection, the detection device is located on the subgrade to be detected. A radio frequency with a known waveform is generated by a radar transmitter. After being separated by a separator, the radio frequency is transmitted to an antenna, and then the antenna radiates this electromagnetic wave directionally into the ground and receives the reflected waves from different medium interfaces underground. When the electromagnetic wave propagates in the medium, its path, electromagnetic field strength, and waveform change with the electromagnetic properties of the medium it passes through. According to the time, amplitude, waveform, and frequency of the received echo, the compaction degree of the subgrade is judged. Through the difference in radar wave frequency between the original soil profile and the slope after vibro-compaction, the difference in compaction degree is reflected, and then the compaction degree of the subgrade is determined. The detection principle is as follows: The ground penetrating radar cannot directly identify the density and compaction degree, which is realized based on the change of the dielectric constant. Because the change of density and compaction degree leads to the change of the dielectric constant. Since the subgrade mixture consists of three-phase media of solid, liquid, and gas, the dielectric constant of the subgrade mixture is related to the root mean square and volume of the dielectric constants of the three-phase media that make it up. The formula is as follows:

[0054] (1)

[0055] In the above formula (1), is the dielectric constant of the subgrade mixture, , , are the dielectric constants of the solid, liquid, and gas three-phase media respectively, , , are the volume ratios of the solid, liquid, and gas three-phase media respectively. Obviously ;

[0056] The density formula of the subgrade mixture is as follows:

[0057] (2)

[0058] In the above formula (1), is the density and volume of the subgrade mixture, is the density and volume of the solid, is the density and volume of the liquid, is the density and volume of the air

[0059] Through formulas (1) and (2), the dielectric constant and density of the subgrade base mixture can be calculated; the compaction degree is calculated based on the dielectric constant and density.

[0060] Step 2: The sampling component obtains a sample and transports it to the sample tray via the sample output component. Subsequently, the conveying component will send the sample under the energy spectrometer;

[0061] Step 3: Evacuate the sample chamber through a vacuum system. Under a vacuum environment, emit an electron beam from an ion source to bombard the surface of the sample, exciting the test soil to emit characteristic X-rays.

[0062] Detect the X-rays through an X-ray detector. According to the intensity of the characteristic X-rays, trace the content and distribution of phosphorus elements in the curing agent, thereby determining the mixing uniformity, and display the mixing uniformity of the soil subgrade on a liquid crystal display screen and send it to the background terminal device.

[0063] Its detection principle is as follows: Obtain the content of phosphorus elements in the test soil by measuring the intensity of the X-rays. The intensity of the X-rays, through calculating the initial intensity of the X-rays and considering the conditions of X-ray absorption and fluorescence, obtains a quantitative analysis formula for the observed intensity of the X-rays:

[0064] ;

[0065] In the above formula, is a constant, backscattering correction factor, is the emission rate of the X-rays, is the ionization cross-section, is Avogadro's constant, is the atomic value, is the absorption correction factor, is the fluorescence correction factor.

[0066] Step 4: Emit ultrasonic waves. The reflected energy of the ultrasonic waves controls the traveling width of the wheel, and the contact area of the wheel changes with the change of the reflected ultrasonic wave energy.

[0067] Working principle of the present invention: During the detection process, the detection box 1 is always fixed on the locking frame 3 to prevent damage to the detection box 1 caused by collisions or other problems. According to the actual situation of the roadbed and the size of the detection range, a suitable power source is selected for detection. The detection device can be connected to an external vehicle or simply pushed by hand. During the movement, the ultrasonic component 8 emits ultrasonic waves, and by detecting the rebound frequency and rebound energy of the ultrasonic waves, the contact area between the moving component 7 and the ground is controlled. The ground penetrating radar 10 continuously emits electromagnetic waves. When the electromagnetic waves propagate in the medium, their paths, electromagnetic field intensities, and waveforms change with the changes in the electromagnetic properties of the medium through which they pass. According to the time, amplitude, waveform, and frequency of the received echoes, the compactness of the roadbed compaction is judged. The difference in radar wave frequencies between the original soil profile and the slope after vibro-compaction reflects the difference in compactness, and thus the compaction degree of the roadbed is determined. The Beidou positioning module 5 consists of a data register, a Beidou transmitter module, and a Beidou receiver module, which can accurately locate the sampling position and driving position during the detection process. Subsequently, the sampling component 13 obtains a suitable roadbed sample, and through the discharging component 12 and the conveying component 9, it is sent to the lower part of the energy spectrometer 11. Then, the vacuum system in the detection box 1 performs a vacuum pumping operation. The energy spectrometer 11 emits X-rays, and the X-rays are detected by the X-ray detector. According to the intensity of the characteristic X-rays, the content and distribution of phosphorus elements in the curing agent are traced to determine the mixing uniformity.

[0068] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device.

[0069] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. 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 perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An integrated detection device for solidified soil subgrade, characterized in that: The detection device includes a locking frame (3) and a detection box (1). The detection box (1) is arranged on the locking frame (3). A pull rod (2) is arranged on one side of the locking frame (3). The pull rod (2) is rotatably connected to the locking frame (3). A moving component (7) and an ultrasonic component (8) are arranged at the bottom end of the locking frame (3). A push rod component (6) is arranged on the side of the detection box (1) away from the pull rod (2). A support tube (4) is arranged at the upper end of the detection box (1). A Beidou positioning module (5) is arranged at the top end of the support tube (4). A conveying component (9) is installed at the lower end inside the detection box (1). A ground penetrating radar (10) is installed on one side of the detection box (1) close to the conveying component (9). An energy spectrometer (11) is installed at the upper end inside the detection box (1) close to the conveying component (9). A sample output component (12) is arranged on one side of the detection box (1) close to the energy spectrometer (11). A sampling component (13) is installed on one side of the detection box (1) close to the sample output component (12). The push rod component (6) includes a group of outer sleeves (601). An inner sleeve (602) is respectively arranged in each outer sleeve (601). The inner sleeve (602) is slidably connected to the outer sleeve (601). A hand-tightening screw (603) is arranged at the junction of the outer sleeve (601) and the inner sleeve (602). A liquid crystal display screen (604) is arranged at the upper end of the outer sleeve (601). A handle (605) is arranged on one side of the upper end of the outer sleeve (601) close to the liquid crystal display screen (604). The lower end of each inner sleeve (602) is respectively connected to a fixed block (606). A rotating head (607) is arranged at the junction of the inner sleeve (602) and the fixed block (606). The rotating head (607) is fixedly connected to the fixed block (606) through a locking screw. The fixed block (606) is fixedly connected to the locking frame (3). The moving component (7) includes a moving wheel (701). The moving wheel (701) is rotatably connected to an expansion shaft (702). The expansion shaft (702) is of a multi-section structure. Each section inside the expansion shaft (702) is slidably connected. A number of expansion wheels (703) are arranged inside the moving wheel (701). The expansion wheels (703) are of a multi-section structure. Each section on the expansion wheels (703) is respectively connected through an expansion strip (704). The side where the expansion wheels (703) are close to each other is of a wedge-shaped structure. The expansion wheels (703) are respectively rotatably connected to each section of the expansion shaft (702). The expansion shaft (702) is connected to the locking frame (3). A telescopic hydraulic rod (705) is arranged inside the expansion shaft (702). The output end of the telescopic hydraulic rod (705) is fixedly connected to one end outside the expansion shaft (702). The telescopic hydraulic rod (705) is connected to the ultrasonic component (8) through a wire. The ultrasonic component (8) includes an ultrasonic transmitter (801), which is fixedly connected to the locking frame (3). On both sides of the ultrasonic transmitter (801), there are ultrasonic receiving boxes (802) respectively. The ultrasonic receiving boxes (802) are slidably connected to the locking frame (3). Inside each ultrasonic receiving box (802), there is a sound-sensing film (803). One side of the sound-sensing film (803) is fixedly connected to the ultrasonic receiving box (802). On the side of the sound-sensing film (803) away from the ultrasonic receiving box (802), there is a moving connecting rod (804). The moving connecting rods (804) are respectively slidably connected to the ultrasonic receiving boxes (802) through springs. At one end of the moving connecting rod (804) away from the sound-sensing film (803), there is a moving magnetic strip (805). The moving magnetic strip (805) is arranged inside a power generation coil (806). The power generation coil (806) is arranged on the ultrasonic receiving box (802). The power generation coil (806) is connected to a rectifier (807) through a wire. The rectifier (807) is arranged on the locking frame (3). The rectifier (807) is respectively connected to a telescopic hydraulic rod (705) and a liquid crystal display screen (604) through wires.

2. The comprehensive detection device for solidified soil subgrade according to claim 1, wherein: The sampling component (13) includes a first electric cylinder (1301). At the bottom end of the first electric cylinder (1301), there is a sampling motor (1302) and a gearbox (1303). The input end of the gearbox (1303) is connected to the output end of the sampling motor (1302). The output end of the gearbox (1303) is fixedly connected to a fixed rod (1304). At the bottom end of the fixed rod (1304), there is an externally threaded sampling cylinder (1305). On one side of the bottom end of the externally threaded sampling cylinder (1305), there is a tapered head (1306). The top end of the first electric cylinder (1301) is fixed inside the detection box (1).

3. The comprehensive detection device for a solidified soil subgrade according to claim 1, characterized in that: The sample output component (12) includes a sample output motor (1201). The sample output motor (1201) is arranged inside the detection box (1). The output end of the sample output motor (1201) is fixedly connected to an externally threaded drill bit (1202). And at one end outside the sample output motor (1201), there is a third electric cylinder (1203). The cylinder part of the third electric cylinder (1203) is fixedly connected to the inner wall of the detection box (1).

4. The comprehensive detection device for a solidified soil subgrade according to claim 1, characterized in that: The conveying component (9) includes a lead screw motor (901). The lead screw motor (901) is arranged at the inner bottom end of the detection box (1). The output end of the lead screw motor (901) is fixedly connected with a ball screw (902). The ball screw (902) is rotatably connected to the detection box (1). A nut pair (903) is arranged on the outer side of the ball screw (902). The nut pair (903) is engaged with the ball screw (902). The upper end of the nut pair (903) is fixedly connected with a lower plate (904). The upper end of the lower plate (904) is connected with a folding frame (905). The upper end of the folding frame (905) is provided with an upper plate (906). And a second electric cylinder (907) is arranged inside the folding frame (905). The upper end of the upper plate (906) is provided with a sample tray (908). The sample tray (908) is slidably connected with the inner wall of the detection box (1).

5. A detection method for a solidified soil subgrade. The detection method is based on the comprehensive detection device for a solidified soil subgrade according to any one of claims 1-4, and is characterized in that: The detection method includes the following steps: Step 1: When detecting, the detection device is located on the subgrade to be detected, and the radar device works to detect the compactness of the soil subgrade; Step 2: Take a sample and send it below the analysis component; Step 3: Emit X-rays, check the absorption intensity of the X-rays, and detect the mixing uniformity of the subgrade; Step 4: Emit ultrasonic waves. The reflected energy of the ultrasonic waves controls the traveling width of the wheel. The contact area of the wheel changes with the change of the reflected ultrasonic wave energy.

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