Road foundation stability detection device and method

Abstract

The invention discloses a road foundation stability detection device, and relates to the technical field of road foundation stability detection, the road foundation stability detection device comprises a device main body, the outer wall of the device main body is slidably connected with a lifting block, and the bottom of the lifting block is fixedly connected with a connecting plate; the bottom of the connecting plate is fixedly connected with a sounding rod slidably connected with the outer wall of the device body, one end of the sounding rod is fixedly connected with a connecting plate, the outer wall of the connecting plate is rotatably connected with a mounting block, and the outer wall of the mounting block is detachably connected with a sounding block. The device main body further comprises a deviation rectifying mechanism arranged on the outer wall of the sounding rod; the protection mechanism is arranged on the outer wall of the device main body; and the deviation rectifying mechanism comprises a rotating plate and a sliding column, and the outer wall of the connecting plate is rotationally connected with the rotating plate. By means of the rotating plate, when the sounding block makes contact with foundations with different flatness, the flatness of contact between the sounding block and the foundations is improved, and the effect of improving the foundation stability detection data precision is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of road foundation stability detection, and specifically relates to a road foundation stability detection device and method. Background Art

[0002] The roadbed is the foundation of the track or road surface, and is a geotechnical structure formed by excavation or filling. The main function of the roadbed is to provide necessary conditions for the laying of the track or road surface and the operation of trains or vehicles, and to bear the static and dynamic loads of the track and rolling stock or the road surface and traffic loads, and at the same time transfer and disperse the loads deep into the foundation. Before laying the track, it is necessary to detect the roadbed to verify its safety and stability. For this purpose, it is necessary to perform construction detection operations on the road foundation through a foundation stability detection device.

[0003] In the prior art, a road foundation detection device with the publication number of CN215165434U relates to the field of road detection devices. It includes a frame and a detector. A connection component is provided between the frame and the detector. The connection component includes a receiving plate and a plurality of driving components. All the driving components are arranged on the side wall of the top plate of the frame away from the ground, and the output end of the driving component penetrates through the top plate of the frame. The receiving plate is arranged at one end of the output ends of all the driving components facing the ground. A positioning component is provided between the detector and the receiving plate. The driving component is used to drive the receiving plate and the detector to move longitudinally. This application has the effect of effectively improving the position stability and application stability of the detector.

[0004] In the prior art, a roadbed stability detection device for a bridge track with the publication number of CN217278238U includes a main ring, a lifting cylinder, a humidity detection ring and a display terminal. A plurality of support rods are fixedly connected to the circumferential outer wall of the main ring at equal intervals, and the lifting cylinder is inserted into the circumferential inner wall of the main ring. The top outer wall of the lifting cylinder is fixedly connected with a top plate, and the display terminal is fixedly connected to the top outer wall of the top plate. The bottom outer wall of the lifting cylinder is fixedly connected with a bottom plate, and an installation groove is formed on the circumferential outer wall of the bottom plate. The humidity detection ring is fixedly connected to the circumferential inner wall of the installation groove. The humidity detection ring is electrically connected to the display terminal. A lifting mechanism is arranged on the top outer wall of the main ring. This utility model realizes the detection effect of the humidity in the road foundation. When the cross bar presses the lifting cylinder and the bottom plate hits the ground, the foundation can be detected by observing whether there is a depression on the ground, and the operation is simple.

[0005] However, when the existing road foundation stability detection device is in use, although it can better detect the stability of the road foundation, the sounding rod and the sounding block often directly contact the foundation in the vertical direction. In the actual construction process of the foundation, there are situations where it is not completely flat. Therefore, when the sounding block is directly in contact with the foundation in the vertical direction, there will be a situation where there is a gap between the sounding block and the foundation. When the angle adjustment of the sounding block is not convenient, it is easy to reduce the accuracy of the stability detection data of the sounding block for the uneven foundation. At the same time, when detecting the stability of the foundation through the sounding block, the adjustability of the force applied to the sounding block is not high, reducing the controllability and efficiency of the detection device for the foundation, and not meeting the usage requirements of people. For this reason, we propose a road foundation stability detection device and method. Summary of the Invention

[0006] The purpose of the present invention is to provide a road foundation stability detection device and method to solve the problems raised in the above background technology, that is, when the sounding block directly contacts the foundation in the vertical direction, there will be a gap between the sounding block and the foundation, reducing the accuracy of the stability detection data of the sounding block for the uneven foundation, and when detecting the stability of the foundation through the sounding block, the adjustability of the force applied to the sounding block is not high, reducing the controllability and efficiency of the detection device for the foundation.

[0007] To achieve the above purpose, the present invention provides the following technical solution: A road foundation stability detection device, including a device main body, an elevating block is slidably connected to the outer wall of the device main body, a connecting plate is fixedly connected to the bottom of the elevating block, a sounding rod slidably connected to the outer wall of the device main body is fixedly connected to the bottom of the connecting plate, a connecting plate is fixedly connected to one end of the sounding rod, a mounting block is rotatably connected to the outer wall of the connecting plate, and a sounding block is detachably connected to the outer wall of the mounting block;

[0008] The device main body further includes:

[0009] A deviation correction mechanism is arranged on the outer wall of the sounding rod;

[0010] A protection mechanism is arranged on the outer wall of the device main body;

[0011] The deviation correction mechanism includes a rotating plate and a sliding column. A rotating plate is rotatably connected to the outer wall of the connecting plate. A sliding column slidably connected to the outer wall of the connecting plate is fixedly connected to the outer wall of the rotating plate. An arc-shaped groove is opened at the connection part between the outer wall of the connecting plate and the sliding column. An electric push rod rotatably connected to the outer wall of the connecting plate is rotatably connected to the outer wall of the rotating plate. By setting the rotating plate, when the sounding block contacts the foundation with different flatness, the flatness of the contact between the sounding block and the foundation is improved, achieving the effect of improving the accuracy of the stability detection data of the foundation.

[0012] Preferably, the sliding column forms a sliding structure with the arc-shaped groove. The outer wall contour of the arc-shaped groove is semi-circular, and the rotation centers of the rotating plate and the mounting block coincide with each other, which plays a role in conveniently adjusting the use angle of the sounding block.

[0013] Preferably, the electric push rod forms a rotating structure with the rotating plate and the connecting plate. There are two groups of electric push rods, and the positions of the two groups of electric push rods are symmetric about the central axis of the rotating plate, which improves the flatness of the contact between the sounding block and the foundation and achieves the effect of improving the accuracy of the detection data of the foundation stability.

[0014] Preferably, a servo motor is fixedly connected to the outer wall of the device main body. The output end of the servo motor is fixedly connected with a threaded rod. The outer wall of the threaded rod is threadedly connected with an adjusting block that is slidably connected to the outer wall of the device main body. A fixing groove is opened at the connection part between the outer wall of the device main body and the adjusting block. By setting the adjusting block, the use height of the sounding block can be adjusted, and different detection forces can be applied to the sounding block, which improves the detection effect of the foundation stability under different applied forces.

[0015] Preferably, the adjusting block forms a sliding structure with the fixing groove through the threaded rod. There are two groups of threaded rods, and the rotation directions of the two groups of threaded rods are opposite, which plays a role in conveniently squeezing and lifting the lifting block.

[0016] Preferably, the outer wall contour of the contact part between the adjusting block and the lifting block is inclined. A lifting groove is opened at the connection part between the outer wall of the device main body and the lifting block. An indicating block is fixedly connected to the outer wall of the lifting block, and a scale is arranged on the outer wall of the device main body on one side of the indicating block, which plays a role in increasing the construction pressure for the foundation detection.

[0017] Preferably, the protection mechanism includes a swing rod, a lifting rod and a protection plate. A connecting column is slidably connected to the outer wall of the connecting plate. A connecting rack that is slidably connected to the outer wall of the device main body is fixedly connected to the outer wall of the connecting column. The connecting rack is meshed with a connecting gear that is rotatably connected to the outer wall of the device main body. The rotation center of the connecting gear is fixedly connected with a swing rod through a rotating shaft. A lifting rod that is slidably connected to the outer wall of the device main body is slidably connected to the outer wall of the swing rod. A protection plate is fixedly connected to one end of the lifting rod. A connecting rod is fixedly connected to the bottom of the lifting block, and a spring that is fixedly connected to the bottom of the lifting block is sleeved on the outer wall of the connecting rod. By setting the protection plate, when the stability of the foundation is detected, the downward movement of the protection plate shields and protects the area to be detected, reducing the interference of impurities on the detection of the foundation to be detected.

[0018] Preferably, a chamfered groove is formed at the connection part between the outer wall of the connecting plate and the connecting column, and a limiting groove is formed at the connection part between the outer wall of the swing rod and the lifting rod, which plays a role in driving the connecting rack to slide synchronously.

[0019] Preferably, the connecting rack forms a sliding structure with the device main body through the connecting plate and the connecting column. There are two groups of connecting racks, and the position distributions of the two groups of connecting racks are symmetrical about the central axis of the connecting plate. The rotation centers of the connecting gears coincide with each other, so as to shield and protect the area to be detected and reduce the interference of impurities on the detection of the foundation to be detected.

[0020] A method for detecting the stability of a road foundation includes the following steps:

[0021] S1. Install the sounding block on the mounting block for daily detection operation of the foundation stability.

[0022] S2. When it is necessary to adjust the detection pressure exerted by the sounding block on the ground, turn on the servo motor to drive the adjusting block to slide along the inner wall of the fixed groove by the rotation of the threaded rod, so as to squeeze and lower the lifting block, and adjust the detection height of the sounding rod and the sounding block, and adjust and detect different pressures during the foundation construction.

[0023] S3. When detecting different pressures during the foundation construction, under the drive of the electric push rod, drive the rotating plate to rotate and drive the sliding column to slide along the inner wall of the arc groove, so as to adjust the contact angle between the sounding block and the ground and improve the adaptability of the sounding block to contact with foundations with different flatness.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0025] 1. For this foundation stability detection device, by setting the rotating plate, when the sounding block contacts the foundation with different flatness, the flatness of the contact between the sounding block and the foundation is improved, achieving the effect of improving the accuracy of the detection data of the foundation stability.

[0026] 2. For this foundation stability detection device, by setting the adjusting block, the use height of the sounding block can be adjusted, and different detection forces can be applied to the sounding block, improving the effect of adjusting and detecting the foundation stability under different applied forces, so as to test the degree of force that the foundation can bear under the action of different pressures. After calculation by the tester on the side, various data of the foundation stability are calculated, greatly improving the detection controllability and efficiency of the detection device.

[0027] 3. For this foundation stability detection device, by setting the protection plate, when detecting the stability of the foundation, the descending movement of the protection plate shields and protects the area to be detected, reducing the interference of impurities on the detection of the foundation to be detected. Brief Description of the Drawings

[0028] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 This is a schematic diagram of the overall bottom view structure of the present invention;

[0030] Figure 3 This is a schematic diagram of the connection structure between the threaded rod and the adjusting block of the present invention;

[0031] Figure 4 This is a schematic diagram of the distribution structure of the connection columns of the present invention;

[0032] Figure 5 This is a schematic diagram of the distribution structure of the sounding blocks of the present invention;

[0033] Figure 6 This is a schematic diagram of the connection structure between the connecting gear and the swing rod of the present invention;

[0034] Figure 7 This is a schematic diagram of the connection structure between the lifting rod and the protection plate of the present invention;

[0035] Figure 8 This is the present invention Figure 6 The enlarged schematic diagram at position B in;

[0036] Figure 9 This is the present invention Figure 5 The enlarged schematic diagram at position A in.

[0037] In the figure: 1, device main body; 2, lifting block; 3, connecting plate; 4, sounding rod; 5, mounting block; 6, sounding block; 7, deviation correction mechanism; 701, rotating plate; 702, sliding column; 703, arc groove; 704, electric push rod; 8, servo motor; 9, threaded rod; 10, adjusting block; 11, fixing groove; 12, lifting groove; 13, indicating block; 14, scale; 15, protection mechanism; 1501, connecting column; 1502, inclined groove; 1503, connecting rack; 1504, connecting gear; 1505, swing rod; 1506, lifting rod; 1507, limiting groove; 1508, protection plate; 16, connecting rod; 17, spring; 18, connecting plate. Detailed Description of the Invention

[0038] 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.

[0039] Please refer toFigures 1-9 , the present invention provides a technical solution: a device for detecting the stability of a road foundation, including a device main body 1. A lifting block 2 is slidably connected to the outer wall of the device main body 1. A connecting plate 3 is fixedly connected to the bottom of the lifting block 2. A sounding rod 4 slidably connected to the outer wall of the device main body 1 is fixedly connected to the bottom of the connecting plate 3. One end of the sounding rod 4 is fixedly connected to an adapter plate 18. A mounting block 5 is rotatably connected to the outer wall of the adapter plate 18. A sounding block 6 is detachably connected to the outer wall of the mounting block 5.

[0040] Embodiment 2:

[0041] Based on Embodiment 1, a rectifying mechanism 7 is further disclosed.

[0042] As Figures 1-9 shown, the device main body 1 further includes:

[0043] The rectifying mechanism 7 is arranged on the outer wall of the sounding rod 4;

[0044] The rectifying mechanism 7 includes a rotating plate 701 and a sliding column 702. The rotating plate 701 is rotatably connected to the outer wall of the adapter plate 18. The sliding column 702 fixedly connected to the outer wall of the rotating plate 701 is slidably connected to the outer wall of the adapter plate 18. An arc-shaped groove 703 is formed at the connection part between the outer wall of the adapter plate 18 and the sliding column 702. An electric push rod 704 rotatably connected to the outer wall of the rotating plate 701 and rotatably connected to the outer wall of the adapter plate 18 is arranged on the outer wall of the rotating plate 701. By setting the rotating plate 701, when the sounding block 6 contacts the foundation with different flatness, the flatness of the contact between the sounding block 6 and the foundation is improved, achieving the effect of improving the accuracy of the detection data of the foundation stability.

[0045] Please refer to Figure 9 shown, the sliding column 702 forms a sliding structure with the arc-shaped groove 703 through the rotating plate 701. The outer wall contour of the arc-shaped groove 703 is semi-circular. The rotation center of the rotating plate 701 coincides with the rotation center of the mounting block 5, which is beneficial to the rotation of the rotating plate 701, driving the sliding column 702 to slide along the inner wall of the arc-shaped groove 703, playing a role in conveniently adjusting the contact angle between the sounding block 6 and the foundation.

[0046] Please refer to Figure 9 shown, the electric push rod 704 forms a rotating structure with the adapter plate 18 through the rotating plate 701. Two groups of electric push rods 704 are provided. The position distributions of the two groups of electric push rods 704 are symmetrical about the central axis of the rotating plate 701, which is beneficial to the rotation of the rotating plate 701, driving the electric push rod 704 to rotate along the outer wall of the adapter plate 18, playing a role in conveniently adjusting the rotation angle of the rotating plate 701, and being beneficial to playing a role in conveniently adjusting the different inclination directions of the sounding block 6 by setting two groups of electric push rods 704 with position distributions symmetrical about the central axis of the rotating plate 701.

[0047] Please refer to Figures 2-4 As shown, a servo motor 8 is fixedly connected to the outer wall of the device main body 1. The output end of the servo motor 8 is fixedly connected to a threaded rod 9. The outer wall of the threaded rod 9 is threadedly connected to an adjustment block 10 that is slidably connected to the outer wall of the device main body 1. A fixing groove 11 is provided at the connection part between the outer wall of the device main body 1 and the adjustment block 10. By setting the threaded rod 9, when it is necessary to adjust the detection pressure exerted by the sounding block 6 on the foundation, the servo motor 8 is turned on. Through the rotation of the threaded rod 9, the adjustment block 10 is driven to slide along the inner wall of the fixing groove 11. Under the action of the inclined surface at the contact part between the adjustment block 10 and the lifting block 2, the lifting block 2 is driven to slide along the inner wall of the lifting groove 12. At the same time, the sounding block 6 and the sounding rod 4 are driven to move downward, achieving the adjustment and detection effect of different detection pressures for foundation construction at different positions.

[0048] Please refer to Figure 3 As shown, a sliding structure is formed between the adjustment block 10 and the fixing groove 11 through the threaded rod 9. There are two groups of threaded rods 9, and the rotation directions of the two groups of threaded rods 9 are opposite. This is beneficial to the rotation of the threaded rod 9, driving the adjustment block 10 to slide along the inner wall of the fixing groove 11, playing a role in conveniently adjusting the use position of the lifting block 2. By setting two groups of threaded rods 9 with opposite rotation directions, it is beneficial to drive the two lifting blocks 2 to perform synchronous lifting and lowering movement adjustments.

[0049] Please refer to Figure 3 and Figure 4 As shown, the outer wall contour of the contact part between the adjustment block 10 and the lifting block 2 is inclined. A lifting groove 12 is provided at the connection part between the outer wall of the device main body 1 and the lifting block 2. An indicating block 13 is fixedly connected to the outer wall of the lifting block 2. A scale 14 is provided on the outer wall of the device main body 1 on one side of the indicating block 13. By setting the outer wall contour of the contact part between the adjustment block 10 and the lifting block 2 to be inclined, the detection effect of different pressures exerted by the sounding rod 4 on the foundation can be achieved. By providing the scale 14 on the outer wall of the device main body 1 on one side of the indicating block 13, it is beneficial to conveniently grasp the data of the descending height of the sounding rod 4. By providing the lifting groove 12, it is beneficial to conveniently limit the downward movement of the sounding rod 4.

[0050] Please refer to Figures 6-8 As shown

[0051] A protection mechanism 15 is provided on the outer wall of the device main body 1;

[0052] The protection mechanism 15 includes a swing rod 1505, a lifting rod 1506 and a protection plate 1508. A connecting column 1501 is slidably connected to the outer wall of the connecting plate 3. An outer wall of the connecting column 1501 is fixedly connected to a connecting rack 1503 that is slidably connected to the outer wall of the device main body 1. The outer wall of the connecting rack 1503 is engaged with a connecting gear 1504 that is rotatably connected to the outer wall of the device main body 1. A rotation center of the connecting gear 1504 is fixedly connected to the swing rod 1505 through a rotating shaft. An outer wall of the swing rod 1505 is slidably connected to a lifting rod 1506 that is slidably connected to the outer wall of the device main body 1. One end of the lifting rod 1506 is fixedly connected to the protection plate 1508. A bottom of the lifting block 2 is fixedly connected to a connecting rod 16. An outer wall of the connecting rod 16 is sleeved with a spring 17 that is fixedly connected to the bottom of the lifting block 2. By providing the protection plate 1508, during the adjustment of applying different detection pressures to the foundation, the movement of the lifting block 2 drives the connecting plate 3 to move downward synchronously. The movement of the connecting plate 3 drives the connecting column 1501 to slide along the inner wall of the inclined groove 1502 and drives the connecting rack 1503 to slide synchronously. The sliding of the connecting rack 1503 drives the swing rod 1505 to rotate synchronously through the rotation of the connecting gear 1504. The rotation of the swing rod 1505 drives the lifting rod 1506 to move downward synchronously along the limiting groove 1507 and the outer wall of the device main body 1 and drives the protection plate 1508 to move synchronously, playing a role in synchronously protecting the area of the foundation to be detected.

[0053] Please refer to Figure 6 As shown, an inclined groove 1502 is provided at a connection portion between the outer wall of the connecting plate 3 and the connecting column 1501, and a limiting groove 1507 is provided at a connection portion between the outer wall of the swing rod 1505 and the lifting rod 1506, which is beneficial to improving the stability of driving the lifting rod 1506 to move up and down through the provision of the inclined groove 1502 and the limiting groove 1507.

[0054] Please refer to Figure 8 As shown, the connecting rack 1503 forms a sliding structure with the device main body 1 through the connecting plate 3 and the connecting column 1501. There are two groups of connecting racks 1503, and the position distributions of the two groups of connecting racks 1503 are symmetrical about the central axis of the connecting plate 3. The rotation center of the connecting gear 1504 coincides with the rotation center of the swing rod 1505. This is beneficial for the movement of the connecting plate 3 to drive the connecting rack 1503 to slide along the outer wall of the device main body 1 through the connection of the connecting column 1501, playing a role in driving the connecting gear 1504 to rotate synchronously. It is beneficial to play a role in synchronously protecting the area of the foundation to be detected through the coincidence setting between the rotation center of the connecting gear 1504 and the rotation center of the swing rod 1505. It is beneficial to improve the stability of the downward movement of the protection plate 1508 by providing two groups of connecting racks 1503 with position distributions symmetrical about the central axis of the connecting plate 3.

[0055] According to another aspect of the present invention, there is provided a method for detecting the stability of a road foundation, comprising the following steps:

[0056] S1. Install the sounding block 6 on the mounting block 5 for daily detection operation of the foundation stability;

[0057] S2. When it is necessary to adjust the detection pressure exerted by the sounding block 6 on the ground, turn on the servo motor 8. Through the rotation of the threaded rod 9, drive the adjusting block 10 to slide along the inner wall of the fixed groove 11, squeeze and lower the lifting block 2, so as to adjust the detection height of the sounding rod 4 and the sounding block 6, and perform adjustment detection of different pressures during foundation construction;

[0058] S3. When detecting different pressures during foundation construction, under the drive of the electric push rod 704, drive the rotating plate 701 to rotate, and drive the sliding column 702 to slide along the inner wall of the arc-shaped groove 703, so as to adjust the contact angle between the sounding block 6 and the ground, and improve the adaptability of the sounding block 6 to contact with foundations of different flatness.

[0059] The working principle of this device is as follows: First, when it is necessary to detect the contact between the sounding block 6 and foundations of different flatness, in order to improve the flatness of the contact between the sounding block 6 and the foundation and improve the accuracy of the detection data of the foundation stability, turn on the electric push rod 704 to drive the rotating plate 701 to rotate, and drive the detection angle of the sounding block 6 to perform synchronous adjustment movement. At the same time, under the rotation of the rotating plate 701, drive the sliding column 702 to slide along the inner wall of the arc-shaped groove 703, which plays a role in conveniently limiting the use angle of the sounding block 6, and achieves the effect of improving the adaptability of the sounding block 6 to contact with foundations of different flatness;

[0060] Next, when it is necessary to adjust the detection pressure exerted by the sounding block 6 on the foundation, turn on the servo motor 8. Through the rotation of the threaded rod 9, drive the adjusting block 10 to slide along the inner wall of the fixed groove 11, and under the action of the inclined surface at the contact part between the adjusting block 10 and the lifting block 2, drive the lifting block 2 to slide along the inner wall of the lifting groove 12. At the same time, drive the sounding block 6 and the sounding rod 4 to perform a descending movement, achieving the adjustment detection effect of different detection pressures for foundations at different positions. At the same time, when it is necessary to relieve the detection force of the sounding block 6, drive the adjusting block 10 to slide in the opposite direction, and under the reaction force of the compression of the connecting rod 16 and the spring 17, drive the lifting block 2 to perform an automatic reset movement to meet the subsequent adjustment effect of the detection force of the foundation stability;

[0061] Finally, during the adjustment of applying different detection pressures to the foundation, the movement of the lifting block 2 drives the connecting plate 3 to move downward synchronously. The movement of the connecting plate 3 drives the connecting column 1501 to slide along the inner wall of the inclined groove 1502, and drives the connecting rack 1503 to slide synchronously. The sliding of the connecting rack 1503 drives the swing rod 1505 to rotate synchronously through the rotation of the connecting gear 1504. The rotation of the swing rod 1505 drives the lifting rod 1506 to move downward synchronously along the limiting groove 1507 and the outer wall of the device main body 1, and drives the protective plate 1508 to move synchronously, playing a role in synchronously protecting the area of the foundation to be detected, so as to test the degree of the force that the foundation can bear under the action of different pressures. After calculation by the tester on the side, various data of the foundation stability are obtained, greatly improving the detection controllability and efficiency of the detection device. This is the working principle of the device, and the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0062] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A device for detecting the stability of a road foundation, comprising a device main body, characterized in that: A lifting block is slidably connected to the outer wall of the device body. A connecting plate is fixedly connected to the bottom of the lifting block. A sounding rod slidably connected to the outer wall of the device body is fixedly connected to the bottom of the connecting plate. One end of the sounding rod is fixedly connected to an adapter plate. A mounting block is rotatably connected to the outer wall of the adapter plate. A sounding block is detachably connected to the outer wall of the mounting block; The device body further includes: A deviation correction mechanism disposed on the outer wall of the sounding rod; A protection mechanism disposed on the outer wall of the device body; The deviation correction mechanism includes a rotating plate and a sliding column. A rotating plate is rotatably connected to the outer wall of the adapter plate. A sliding column slidably connected to the outer wall of the adapter plate is fixedly connected to the outer wall of the rotating plate. An arc-shaped groove is formed at the connecting portion between the outer wall of the adapter plate and the sliding column. An electric push rod rotatably connected to the outer wall of the adapter plate is rotatably connected to the outer wall of the rotating plate.

2. The roadbed stability detection device according to claim 1, characterized in that: The sliding column forms a sliding structure through the rotating plate and the arc-shaped groove. The outer wall contour of the arc-shaped groove is semi-circular. The rotation centers of the rotating plate and the mounting block coincide with each other.

3. The roadbed stability detection device according to claim 1, characterized in that: The electric push rod forms a rotating structure through the rotating plate and the adapter plate. There are two groups of electric push rods. The positions of the two groups of electric push rods are symmetric about the central axis of the rotating plate.

4. A road foundation stability detection device according to claim 1, characterized in that: A servo motor is fixedly connected to the outer wall of the device body. A threaded rod is fixedly connected to the output end of the servo motor. An adjusting block slidably connected to the outer wall of the device body is threadedly connected to the outer wall of the threaded rod. A fixing groove is formed at the connecting portion between the outer wall of the device body and the adjusting block.

5. The roadbed stability detection device according to claim 4, wherein: The adjusting block forms a sliding structure through the threaded rod and the fixing groove. There are two groups of threaded rods. The rotation directions of the two groups of threaded rods are opposite.

6. The roadbed stability detection device according to claim 4, characterized in that: The outer wall contour of the contact portion between the adjusting block and the lifting block is inclined. A lifting groove is formed at the connecting portion between the outer wall of the device body and the lifting block. An indicating block is fixedly connected to the outer wall of the lifting block. A scale is disposed on the outer wall of the device body on one side of the indicating block.

7. The roadbed stability detection device according to claim 1, characterized in that: The protection mechanism includes a swing rod, a lifting rod and a protection plate. A connecting column is slidably connected to the outer wall of the connecting plate. A connecting rack slidably connected to the outer wall of the device body is fixedly connected to the outer wall of the connecting column. A connecting gear rotatably connected to the outer wall of the device body is engaged with the outer wall of the connecting rack. The rotation center of the connecting gear is fixedly connected to the swing rod through a rotating shaft. A lifting rod slidably connected to the outer wall of the device body is slidably connected to the outer wall of the swing rod. A protection plate is fixedly connected to one end of the lifting rod. A connecting rod is fixedly connected to the bottom of the lifting block. A spring fixedly connected to the bottom of the lifting block is sleeved on the outer wall of the connecting rod.

8. A road foundation stability detection device according to claim 7, characterized in that: An inclined groove is formed at the connecting portion between the outer wall of the connecting plate and the connecting column. A limiting groove is formed at the connecting portion between the outer wall of the swing rod and the lifting rod.

9. A road foundation stability detection device according to claim 7, characterized in that: The connecting rack forms a sliding structure with the device body through the connecting plate and the connecting column. There are two groups of connecting racks. The positions of the two groups of connecting racks are symmetric about the central axis of the connecting plate. The rotation centers of the connecting gear and the swing rod coincide with each other.

10. A method for detecting the stability of a road foundation, characterized in that, Including the following steps: S1. Install the sounding block on the installation block for daily foundation stability detection operations; S2. When it is necessary to adjust the detection pressure exerted by the sounding block on the ground, turn on the servo motor. Through the rotation of the threaded rod, drive the adjustment block to slide along the inner wall of the fixed groove, squeeze and lower the lifting block, so as to adjust the detection height of the sounding rod and the sounding block, and adjust and detect different pressures during foundation construction; S3. When detecting different pressures during foundation construction, under the drive of the electric push rod, drive the rotating plate to rotate and drive the sliding column to slide along the inner wall of the arc-shaped groove, so as to adjust the contact angle between the sounding block and the ground, and improve the adaptability of the sounding block to contact with foundations of different flatness.

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