Horizontal detection device for roadbed and pavement of high-speed rail

Abstract

The invention relates to the technical field of high-speed rail roadbed pavement detection, in particular to a high-speed rail roadbed pavement levelness detection device which comprises a movable base, a movable frame is arranged on the upper side of the movable base, a top frame is arranged on the upper side of the movable frame, and a plurality of double-layer elastic assemblies are installed on the upper side of the movable base. The movable frame is connected with the lower elastic part of the double-layer elastic assembly, the top frame is connected with the upper elastic part of the double-layer elastic assembly, and the double-layer elastic assembly elastically supports the movable frame and the movable frame. By arranging the horizontal gravity center assembly, the horizontal light ray assembly, the detection light ray assembly, the limiting mechanism and other components, the horizontal light ray assembly emits horizontal light rays, and when the ground touching mechanism moves on the ground, the inclination angle of the light rays emitted by the detection light ray assembly changes along with ground fluctuation; the intelligent light sensor records the cross angle of two light rays of the horizontal light ray assembly and the detection light ray assembly and transmits data to the data receiving end.

Description

Technical Field

[0001] This invention relates to the technical field of high-speed railway subgrade and pavement inspection, and in particular to a horizontal inspection device for high-speed railway subgrade and pavement. Background Technology

[0002] High-speed railway subgrade is the basic structure of high-speed railway lines. Its main functions are to support the tracks, transmit train loads, and distribute them evenly to the foundation. It is one of the core infrastructures that ensures the high smoothness, high stability, and high safety of high-speed train operation. Compared with ordinary railways, high-speed railway subgrades have more stringent requirements for settlement control and deformation coordination, and must meet "millimeter-level" precision standards. With the development of the smart industry, smart sensors are widely used, transmitting the detected data to a computer receiving and processing terminal.

[0003] Chinese patent CN111119013B discloses a roadbed and pavement level detection device, including a vehicle body with a detection body on the left side of the vehicle body. Through the cooperation of the vehicle body, strain gauge, lifting device, and cable reeling device, the detection body can be controlled, allowing it to switch freely between working and non-working modes. This facilitates transportation and storage when the device is not in operation. The device requires only one operator, resulting in high detection efficiency and reduced labor costs. It detects the flatness of the roadbed and pavement through the detection body, automatically identifying the maximum gap between the bottom surface of the detection body and the pavement, and converting the flatness into a current signal value for display. This reduces detection errors and provides high accuracy, helping to accurately assess the quality of the roadbed and pavement and improving the practicality of the device. However, the aforementioned related technology has the following drawbacks: when detecting the roadbed plane, it can only detect the flatness of the roadbed, but the angle between two points and two lines within the roadbed area and the horizontal plane cannot be directly shown, making subsequent processing of roadbed data inconvenient. Summary of the Invention

[0004] To address the problems mentioned in the background art, the present invention provides a level detection device for high-speed railway subgrade pavement.

[0005] The present invention provides a horizontal detection device for high-speed railway subgrade pavement, which adopts the following technical solution: it includes a movable base, a movable frame is provided on the upper side of the movable base, a top frame is provided on the upper side of the movable frame, and a plurality of double-layer elastic components are installed on the upper side of the movable base. The movable frame is connected to the lower elastic part of the double-layer elastic components, and the top frame is connected to the upper elastic part of the double-layer elastic components. The double-layer elastic components provide elastic support for the movable frame and the movable frame respectively.

[0006] A rotatable horizontal center of gravity component is installed on the lower side of the top frame. The bottom surface of the horizontal center of gravity component can be in a horizontal state under its own center of gravity. A limiting mechanism is installed at the connection shaft between the horizontal center of gravity component and the top frame. The limiting mechanism can be disassembled. When the limiting mechanism is not disassembled, the horizontal center of gravity component cannot rotate relative to the top frame. A power mechanism is installed on the upper side of the movable base. The power mechanism applies a downward pulling force to the top frame through the limiting mechanism.

[0007] The movable frame is equipped with a parallel linkage mechanism on its inner side. The parallel linkage mechanism can rotate elastically relative to the movable frame. The horizontal center of gravity component can pass through the inner side of the movable frame. A coupling assembly is installed on the lower side of one end of the movable frame. A detection light component that can rotate relative to the coupling assembly is installed on the other end of the coupling assembly. A horizontal light component that can rotate is installed inside the detection light component. The horizontal light component can emit light parallel to the parallel linkage mechanism. The horizontal light component and the detection light component are rotatably connected. A ground contact mechanism is installed on the lower side of the detection light component. The horizontal light component is connected to the parallel linkage mechanism. The line connecting the hinge axis of the detection light component and the horizontal light component and the hinge axis of the coupling assembly and the detection light component is parallel to the light emitted by the detection light component. The detection light component is equipped with an intelligent light sensor that can detect the angle of the light rays.

[0008] Optionally, the double-layer elastic component includes a main upright, an upper support spring, and a lower support spring. The lower end of the main upright is fixed to the movable base, and the lower ends of the upper and lower support springs are both fixed to the main upright. The top frame and the movable frame are both sleeved on the outer surface of the main upright. The top frame and the movable frame can move up and down relative to the main upright. The upper end of the upper support spring is fixed to the top frame, and the upper end of the lower support spring is fixed to the movable frame.

[0009] Optionally, the horizontal center of gravity assembly includes a horizontal reference plate, a center of gravity column, and a support shaft. The support shaft is located above the center of the horizontal reference plate, and both ends of the support shaft pass through the top frame. The support shaft can rotate relative to the two ends of the top frame. The upper end of the center of gravity column is sleeved on the outside of the support shaft. The horizontal reference plate can move downward and pass through the inside of the movable frame. The upper surface of the horizontal reference plate is fixed to the support shaft through a connecting frame.

[0010] Optionally, the limiting mechanism includes a limiting gear and a limiting plate. The limiting plate is located on the upper side of the limiting gear. The limiting gear is coaxially fixed with the support shaft. The power mechanism controls the limiting plate to move up and down. The limiting plate is arranged in an arc shape, and the side of the limiting plate near the limiting gear has a tooth shape that matches the limiting gear.

[0011] Optionally, the parallel linkage mechanism includes an inner frame and two coaxially arranged through shafts. The through shafts are installed at the center of the inner frame and are arranged parallel to the support shafts. The through shafts pass through the inner side of the movable frame and can rotate elastically relative to the movable frame. An active plate that can be moved by power is installed on the inner side of the inner frame, and a horizontal light component is installed on the bottom surface of the active plate.

[0012] Optionally, the coupling assembly includes a torsion frame, a connecting shaft, and a bending frame. The torsion frame is rotatably connected to the connecting shaft, the bending frame is rotatably sleeved on the outer surface of the connecting shaft, the upper end of the bending frame is fixed to the movable frame, and the torsion frame is sleeved on the outside of the detection light assembly, allowing the detection light assembly to slide within the torsion frame.

[0013] Optionally, the detection light assembly is equipped with a parallel rod and a detection light emitter. The detection light emitter is fixedly installed with the parallel rod, which passes through the inside of the torsion frame. The intelligent light sensor is installed inside the parallel rod.

[0014] Optionally, the horizontal light component includes a linkage elastic telescopic rod and a horizontal light emitter. The horizontal light emitter is installed vertically to the linkage elastic telescopic rod, the upper end of the linkage elastic telescopic rod is installed vertically to the bottom surface of the active plate, and the other end of the linkage elastic telescopic rod is rotatably connected to a parallel rod.

[0015] The horizontal light emitter and the extended axis of the detection light assembly are arranged to intersect with the rotation axis of the linkage elastic telescopic rod and the parallel rod.

[0016] Optionally, the ground contact mechanism includes a ground contact rod and a ground contact wheel. The ground contact wheel is rotatably connected to the lower end of the ground contact rod, and the upper end of the ground contact rod is fixed to the parallel rod. The axis of the ground contact rod and the axis of rotation of the linkage elastic telescopic rod intersect with the axis of rotation of the parallel rod.

[0017] Optionally, the bottom surface of the movable frame is equipped with a retractable ground-mounted telescopic rod, the lower end of which is located below the lowest point of the ground-contact wheel.

[0018] In summary, the present invention has the following beneficial technical effects: This invention incorporates components such as a horizontal center of gravity assembly, a horizontal light beam assembly, a detection light beam assembly, and a limiting mechanism. The horizontal light beam assembly emits horizontal light beams, and as the ground contact mechanism moves on the ground, the angle of the light beam emitted by the detection light beam assembly changes with the ground's undulations. An intelligent light sensor records the intersection angle of the two light beams from the horizontal light beam assembly and the detection light beam assembly and transmits the data to a data receiving end.

[0019] This invention, by setting a limiting gear and a limiting plate, allows the limiting plate to mesh with the limiting gear when it is at its uppermost position. At this time, the horizontal reference plate can rotate to a horizontal state around the axis of the support shaft under the center of gravity column. When the power component pulls the limiting plate downward, the limiting plate first meshes with the limiting gear before pulling the horizontal reference plate downward, effectively preventing the horizontal reference plate from rotating during movement and thus failing to be horizontal when in contact with the inner frame. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure in an embodiment of the present invention; Figure 2This is a side view structural diagram in an embodiment of the present invention; Figure 3 This is a front view schematic diagram of some structures in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure connecting the support shaft and the center-of-gravity column in an embodiment of the present invention; Figure 5 This is a schematic diagram of the distribution of the horizontal reference plate and the movable frame in an embodiment of the present invention; Figure 6 This is a schematic diagram of the connection between the inner frame and the movable frame in an embodiment of the present invention; Figure 7 This is an isometric schematic diagram of some structures in an embodiment of the present invention; Figure 8 This is a schematic diagram of the connection between the coupling and the bending frame in an embodiment of the present invention; Figure 9 This is a schematic diagram of the distribution of the horizontal light emitter and the detection light component in an embodiment of the present invention.

[0021] Reference numerals: 1. Movable base; 2. Movable frame; 3. Double-layer elastic component; 31. Main upright; 32. Upper support spring; 33. Lower support spring; 4. Detection light component; 41. Parallel rod; 42. Detection light emitter; 5. Horizontal center of gravity component; 51. Horizontal reference plate; 52. Center of gravity column; 53. Support shaft; 54. Connecting frame; 6. Limiting mechanism; 61. Limiting gear; 62. Limiting plate; 7. Parallel linkage mechanism; 71. Inner frame; 72. Through shaft; 73. Active plate; 8. Coupling component; 81. Torsion frame; 82. Connecting shaft; 83. Bending frame; 9. Horizontal light component; 91. Linked elastic telescopic rod; 92. Horizontal light emitter; 10. Ground contact mechanism; 101. Ground contact rod; 102. Ground contact wheel; 11. Top frame; 12. Intelligent light sensor; 13. Power mechanism; 14. Ground-inserting telescopic rod. Detailed Implementation

[0022] The following is in conjunction with the appendix Figures 1-9 The present invention will be described in further detail below.

[0023] This invention discloses a level detection device for high-speed railway subgrade pavement. For example... Figures 1-9 As shown, it includes a movable base 1, with movable wheels installed at the four corners of the bottom surface of the movable base 1, enabling the movable base 1 to move on the ground via the movable wheels. A movable frame 2 is provided on the upper side of the movable base 1, and a top frame 11 is provided on the upper side of the movable frame 2. Multiple double-layer elastic components 3 are installed on the upper side of the movable base 1. The movable frame 2 is connected to the lower elastic part of the double-layer elastic components 3, and the top frame 11 is connected to the upper elastic part of the double-layer elastic components 3. The double-layer elastic components 3 provide elastic support for the movable frame 2 and the movable frame 3 respectively.

[0024] The double-layer elastic component 3 includes a main upright 31, an upper support spring 32, and a lower support spring 33. The lower end of the main upright 31 is fixed to the movable base 1. The lower ends of the upper support spring 32 and the lower support spring 33 are both fixed to the main upright 31. The top frame 11 and the movable frame 2 are both sleeved on the outer surface of the main upright 31. The top frame 11 and the movable frame 2 can move up and down relative to the main upright 31. The top frame 11 and the movable frame 2 slide vertically on the main upright 31. The upper end of the upper support spring 32 is fixed to the top frame 11. The elasticity of the upper support spring 32 supports the top frame 11. The upper end of the lower support spring 33 is fixed to the movable frame 2. The elasticity of the lower support spring 33 supports the movable frame 2.

[0025] A rotatable horizontal center of gravity component 5 is installed on the lower side of the top frame 11. The bottom surface of the horizontal center of gravity component 5 can be in a horizontal state under its own center of gravity. A limiting mechanism 6 is installed at the connecting shaft between the horizontal center of gravity component 5 and the top frame 11. The limiting mechanism 6 can be disassembled. When the limiting mechanism 6 is not disassembled, the horizontal center of gravity component 5 cannot rotate relative to the top frame 11. A power mechanism 13 is installed on the upper side of the movable base 1. The power mechanism 13 applies a downward pulling force to the top frame 11 through the limiting mechanism 6.

[0026] The horizontal center of gravity assembly 5 includes a horizontal reference plate 51, a center of gravity column 52, and a support shaft 53. The support shaft 53 is located above the center of the horizontal reference plate 51. Both ends of the support shaft 53 pass through the top frame 11 and can rotate relative to both ends of the top frame 11. A bearing is installed at the rotatable connection between the support shaft 53 and the top frame 11. The upper end of the center of gravity column 52 is sleeved on the outside of the support shaft 53. The horizontal reference plate 51 can move downward and pass through the inside of the movable frame 2. The upper surface of the horizontal reference plate 51 is fixed to the support shaft 53 through a connecting frame 54. The cross-section of the center of gravity column 52 is teardrop-shaped. When the support shaft 53 can rotate freely, the horizontal reference plate 51 rotates to a horizontal state under the action of the center of gravity column 52.

[0027] The limiting mechanism 6 includes a limiting gear 61 and a limiting plate 62. The limiting plate 62 is located above the limiting gear 61. The limiting gear 61 is coaxially fixed with the support shaft 53. The power mechanism 13 controls the limiting plate 62 to move up and down. The limiting plate 62 is arranged in an arc shape. When the limiting plate 62 meshes with the limiting gear 61, the limiting gear 61 cannot rotate. The side of the limiting plate 62 near the limiting gear 61 has matching teeth. The power mechanism 13 consists of an electric telescopic rod driven by a motor. The electric telescopic rod driven by the motor controls the limiting plate 62 to move up and down in the vertical direction. When the limiting plate 62 moves down, it first meshes with the limiting gear 61, preventing the limiting gear 61 from rotating. When the limiting plate 62 continues to be pulled down, it pushes the top frame 11 down through the limiting gear 61, while ensuring that the horizontal reference plate 51 remains horizontal when moving up and down.

[0028] The movable frame 2 is provided with a parallel linkage mechanism 7. The parallel linkage mechanism 7 can rotate elastically relative to the movable frame 2, and the horizontal center of gravity component 5 can pass through the inside of the movable frame 2.

[0029] The parallel linkage mechanism 7 includes an inner frame 71 and two coaxially arranged through shafts 72. The through shafts 72 are installed at the center of the inner frame 71 and are arranged parallel to the support shaft 53. The through shafts 72 pass through the inner side of the movable frame 2 and can rotate elastically relative to the movable frame 2. The elastic connection between the through shafts 72 and the movable frame 2 is preferably a torsion spring. The torsion spring is connected to the through shafts 72 and the movable frame 2 respectively. The elasticity of the torsion spring is less than that of the lower support spring 33. The elastic connection between the through shafts 72 and the movable frame 2 makes the inner frame 71 parallel to the movable frame 2 when it is not subjected to pressure from the horizontal reference plate 51.

[0030] An active plate 73 capable of being moved by power is installed inside the inner frame 71. A rotatable threaded shaft is installed inside the inner frame 71. A bearing is installed at the connection between the threaded shaft and the inner frame 71. A drive motor that outputs power to the threaded shaft is installed in the inner frame 71. When the threaded shaft rotates, it meshes with the active plate 73, driving the active plate 73 to move within the inner frame 71.

[0031] When the horizontal reference plate 51 moves downward, it can pass through the movable frame 2 and push the inner frame 71. When the horizontal reference plate 51 pushes the inner frame 71, the inner frame 71 rotates relative to the axis of the through shaft 72 after being pushed by the horizontal reference plate 51. After the inner frame 71 and the horizontal reference plate 51 make parallel contact, the horizontal reference plate 51 continues to move downward and then pushes the movable frame 2 to move downward.

[0032] A coupling assembly 8 is installed on the lower side of one end of the movable frame 2, and a detection light assembly 4 capable of relative rotation is installed on the other end of the coupling assembly 8.

[0033] The coupling assembly 8 includes a torsion frame 81, a connecting shaft 82, and a bending frame 83. The torsion frame 81 is rotatably connected to the connecting shaft 82, and the bending frame 83 is rotatably sleeved on the outer surface of the connecting shaft 82. The upper end of the bending frame 83 is fixed to the movable frame 2. The torsion frame 81 is sleeved on the outside of the detection light assembly 4, and the detection light assembly 4 can slide inside the torsion frame 81.

[0034] A rotatable horizontal light component 9 is installed inside the detection light component 4. The horizontal light component 9 can emit light parallel to the parallel linkage mechanism 7. The horizontal light component 9 and the detection light component 4 are rotatably connected. A ground contact mechanism 10 is installed on the lower side of the detection light component 4. The ground contact mechanism 10 limits the height of the detection light component 4 by contacting the ground.

[0035] The horizontal light component 9 is connected to the parallel linkage mechanism 7, and the horizontal light component 9 is installed on the bottom surface of the active plate 73.

[0036] The hinge axis of the detection light assembly 4 and the horizontal light assembly 9, and the line connecting the hinge axis of the coupling assembly 8 and the detection light assembly 4, are parallel to the light emitted by the detection light assembly 4.

[0037] The detection light assembly 4 is equipped with a parallel rod 41 and a detection light emitter 42. The detection light emitter 42 is fixedly installed with the parallel rod 41. The parallel rod 41 passes through the inside of the torsion frame 81 and can slide within the torsion frame 81.

[0038] The horizontal beam assembly 9 includes a linkage elastic telescopic rod 91 and a horizontal beam emitter 92. The horizontal beam emitter 92 is installed vertically to the linkage elastic telescopic rod 91. The upper end of the linkage elastic telescopic rod 91 is installed vertically on the bottom surface of the active plate 73. The other end of the linkage elastic telescopic rod 91 is rotatably connected to the parallel rod 41. The linkage elastic telescopic rod 91 has a tendency to elastically extend.

[0039] The detection light emitter 42 and the horizontal light emitter 92 can emit light beams.

[0040] The horizontal light emitter 92 and the extended axis of the detection light assembly 4 are arranged to intersect the rotation axis of the linkage elastic telescopic rod 91 and the parallel rod 41.

[0041] In the initial state, when the active plate 73 is located at the end of the inner frame 71 near the connecting shaft 82, the hinge axis of the parallel rod 41 and the linkage elastic telescopic rod 91 is coaxial with the connecting shaft 82.

[0042] The light detection assembly 4 is equipped with an intelligent light sensor 12 that can detect the angle between light beams. The intelligent light sensor 12 is installed inside the parallel rod 41. The intelligent light sensor 12 consists of a light sensor and a background plate. The light beams emitted by the detection light emitter 42 and the horizontal light emitter 92 pass between the light sensor and the background plate. Then, the light sensor records the angle between the two light beams and transmits it to the data receiver.

[0043] The ground contact mechanism 10 includes a ground contact rod 101 and a ground contact wheel 102. The ground contact wheel 102 is rotatably connected to the lower end of the ground contact rod 101. The upper end of the ground contact rod 101 is fixed to the parallel rod 41. The axis of the ground contact rod 101 and the linkage elastic telescopic rod 91 are intersected with the rotation axis of the parallel rod 41. When the horizontal reference plate 51 pushes the inner frame 71 and the movable frame 2 downward, the ground contact rod 101 and the ground contact wheel 102 are pushed downward to contact the ground.

[0044] The bottom surface of the movable frame 2 is equipped with a flexible telescopic rod 14. The lower end of the telescopic rod 14 is located below the lowest point of the ground contact wheel 102. Before the ground contact wheel 102 contacts the ground, the telescopic rod 14 is inserted into the ground to ensure that the movable base 1 will not move during the test.

[0045] In the detection of the tilt angle of the foundation, after the ground contact wheel 102 contacts the ground, this is the starting point of the detection. The angle between the horizontal plane and the moving position of the ground contact wheel 102 and the starting point of the detection is the angle between the horizontal plane and the moving position of the ground contact wheel 102. When the active plate 73 moves within the inner frame 71, the active plate 73 pulls the parallel rod 41, the ground contact rod 101 and the ground contact wheel 102 through the linkage elastic telescopic rod 91. At the same time, the linkage elastic telescopic rod 91 pushes the ground contact wheel 102 to keep in contact with the ground. When the ground undulates, the parallel rod 41 rotates synchronously. The angle between the axis of the parallel rod 41 and the axis of the linkage elastic telescopic rod 91 and the axis of the connecting shaft 82 changes accordingly. The angle of the light emitted by the corresponding detection light emitter 42 changes accordingly. As the ground contact wheel 102 moves, the angle between the line connecting the ground contact position and the initial ground position and the horizontal plane is displayed as the angle between the light emitted by the detection light emitter 42 and the horizontal light emitter 92.

[0046] In this embodiment, multiple sets of the torsion frame 81, connecting shaft 82, detection light component 4, horizontal light component 9, and ground contact mechanism 10 can be set to simultaneously detect the included angles at multiple positions in the longitudinal direction of the ground.

[0047] The working principle is as follows: The movable base 1 moves on the ground to the detection position. The limiting mechanism 6 is in the uppermost position and is in a disassembled state, so it cannot limit the horizontal center of gravity component 5. The bottom surface of the horizontal center of gravity component 5 can be in a horizontal state under its own center of gravity. The power mechanism 13 controls the limiting mechanism 6 to move downward and first fix the horizontal center of gravity component 5 in a horizontal state, so that the bottom surface of the horizontal center of gravity component 5 is stable and horizontal. When the horizontal center of gravity component 5 moves downward, it contacts the parallel linkage mechanism 7, so that the parallel linkage mechanism 7 rotates to be parallel to the bottom surface of the horizontal center of gravity component 5. As it continues to move downward, it pushes the ground contact mechanism 10 to contact the ground. The horizontal light component 9 emits horizontal light. When the ground contact mechanism 10 moves on the ground, the emitted light of the detection light component 4 changes its tilt angle with the ground fluctuation. The intelligent light sensor 12 records the intersection angle of the two light rays of the horizontal light component 9 and the detection light component 4 and transmits the data to the data receiving end.

[0048] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A device for horizontal detection of a railway track bed, comprising a mobile base (1), characterized in that: The mobile base (1) is provided with a movable frame (2) on the upper side, the movable frame (2) is provided with a top frame (11) on the upper side, a plurality of double-layer elastic components (3) are installed on the upper side of the mobile base (1), the movable frame (2) is connected with the lower elastic part of the double-layer elastic component (3), the top frame (11) is connected with the upper elastic part of the double-layer elastic component (3), and the double-layer elastic component (3) elastically supports the movable frame (2) and the movable frame (2) respectively; The top frame (11) is installed with a rotatable horizontal gravity center component (5) on the lower side, the bottom surface of the horizontal gravity center component (5) can be in a horizontal state under the gravity center of itself, the horizontal gravity center component (5) is installed with a limiting mechanism (6) at the connecting shaft of the top frame (11), the limiting mechanism (6) can be disassembled, when the limiting mechanism (6) is not disassembled, the horizontal gravity center component (5) cannot rotate relative to the top frame (11), a power mechanism (13) is installed on the upper side of the mobile base (1), and the power mechanism (13) applies pulling force downward to the top frame (11) through the limiting mechanism (6); The movable frame (2) is provided with a parallel linkage mechanism (7) on the inner side, the parallel linkage mechanism (7) can be elastically rotated relative to the movable frame (2), the horizontal gravity center component (5) can pass through the inner side of the movable frame (2), a shaft coupling component (8) is installed on one end of the movable frame (2) on the lower side, the other end of the shaft coupling component (8) is installed with a rotatable detection light component (4), a rotatable horizontal light component (9) is installed on the inner side of the detection light component (4), the horizontal light component (9) can emit light parallel to the parallel linkage mechanism (7), the horizontal light component (9) and the detection light component (4) are rotationally connected, a ground-touching mechanism (10) is installed on the lower side of the detection light component (4), the horizontal light component (9) is connected with the parallel linkage mechanism (7), the hinge axis line of the detection light component (4) and the horizontal light component (9) and the hinge axis line of the shaft coupling component (8) and the detection light component (4) are parallel to the light emitted by the detection light component (4), and the detection light component (4) is installed with an intelligent light sensor (12) capable of detecting the included angle of light.

2. The horizontal detection device for high-speed railway subgrade pavement according to claim 1, characterized in that: The double-layer elastic component (3) comprises a main vertical rod (31), an upper supporting spring (32) and a lower supporting spring (33), the lower end of the main vertical rod (31) is fixed with the mobile base (1), the lower end of the upper supporting spring (32) and the lower supporting spring (33) are fixed with the main vertical rod (31), the top frame (11) and the movable frame (2) are sleeved on the outer surface of the main vertical rod (31), the top frame (11) and the movable frame (2) can move up and down relative to the main vertical rod (31), the upper end of the upper supporting spring (32) is fixed with the top frame (11), and the upper end of the lower supporting spring (33) is fixed with the movable frame (2).

3. The level detection device for high railway subgrade pavement according to claim 1, characterized in that: The horizontal gravity center assembly (5) comprises a horizontal reference plate (51), a gravity center column (52) and a support shaft (53), the support shaft (53) is located on the upper side of the center of the horizontal reference plate (51), the two ends of the support shaft (53) penetrate the top frame (11), the support shaft (53) can rotate relative to the two ends of the top frame (11), the upper end of the gravity center column (52) is sleeved outside the support shaft (53), the horizontal reference plate (51) can move downwards from the inner side of the movable frame (2), and the upper surface of the horizontal reference plate (51) is fixed with the support shaft (53) through the connecting frame (54).

4. The level detection device for high railway subgrade pavement according to claim 3, characterized in that: The limiting mechanism (6) comprises a limiting gear (61) and a limiting clamping plate (62), the limiting clamping plate (62) is located on the upper side of the limiting gear (61), the limiting gear (61) is coaxially fixed with the support shaft (53), the power mechanism (13) controls the limiting clamping plate (62) to move up and down, the limiting clamping plate (62) is arranged in a circular arc, and one side of the limiting clamping plate (62) close to the limiting gear (61) is in the form of matching teeth.

5. The level detection device for high railway subgrade pavement according to claim 3, characterized in that: The parallel linkage mechanism (7) comprises an inner frame (71) and two coaxially arranged penetrating shafts (72), the penetrating shaft (72) is installed at the center position of the inner frame (71), the penetrating shaft (72) is arranged in parallel with the support shaft (53), the penetrating shaft (72) penetrates the inner side of the movable frame (2), the penetrating shaft (72) can elastically rotate relative to the movable frame (2), the inner side of the inner frame (71) is provided with a driving plate (73) capable of moving by power, and the horizontal light assembly (9) is installed on the bottom surface of the driving plate (73).

6. The level detection device for a high railway roadbed pavement according to claim 5, characterized in that: The shaft coupling assembly (8) comprises a torsion frame (81), a connecting shaft (82) and a bending frame (83), the torsion frame (81) is rotatably connected with the connecting shaft (82), the bending frame (83) is rotatably sleeved on the outer surface of the connecting shaft (82), the upper end of the bending frame (83) is fixed with the movable frame (2), the torsion frame (81) is sleeved outside the detection light assembly (4), and the detection light assembly (4) can slide in the torsion frame (81).

7. The level detection device for a high railway roadbed pavement according to claim 6, characterized in that: The detection light assembly (4) is provided with a parallel rod (41) and a detection light emitter (42), the detection light emitter (42) is fixedly installed with the parallel rod (41), the parallel rod (41) is arranged in the inner side of the torsion frame (81), and the intelligent light sensor (12) is installed in the inner side of the parallel rod (41).

8. The level detection device for a high railway roadbed pavement according to claim 7, characterized in that: The horizontal light assembly (9) comprises a linkage elastic telescopic rod (91) and a horizontal light emitter (92), the horizontal light emitter (92) is vertically installed with the linkage elastic telescopic rod (91), the upper end of the linkage elastic telescopic rod (91) is vertically installed on the bottom surface of the driving plate (73), and the other end of the linkage elastic telescopic rod (91) is rotatably connected with the parallel rod (41). The horizontal light emitter (92) is arranged on the intersection of the axis extension line of the detection light assembly (4) and the rotation axis of the linkage elastic telescopic rod (91) and the parallel rod (41).

9. The level detection device for a high railway roadbed pavement according to claim 7, characterized in that: The ground-touching mechanism (10) comprises a ground-touching rod (101) and a ground-touching wheel (102), the ground-touching wheel (102) is rotationally connected with the lower end of the ground-touching rod (101), the upper end of the ground-touching rod (101) is fixed with the parallel rod (41), the axis of the ground-touching rod (101) and the rotation axis of the linkage elastic telescopic rod (91) and the parallel rod (41) are intersectingly arranged.

10. The level detection device for a high railway roadbed pavement according to claim 8, characterized in that: The bottom surface of the movable frame (2) is provided with the elastic telescopic ground-inserting rod (14), and the lower end of the elastic telescopic ground-inserting rod (14) is located below the lowest point of the ground-touching wheel (102).

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