Road surface flatness efficient detection equipment for highway engineering

Abstract

The invention discloses road surface flatness efficient detection equipment for highway engineering, which comprises an eight-wheel detection seat, a controller is mounted at the top of the eight-wheel detection seat, and a mounting plate is slidably arranged in a cavity at the lower end of the middle of the eight-wheel detection seat through an electric push rod I; the T-shaped rods are rotatably arranged at the bottom of the mounting plate at equal intervals, the bottoms of the T-shaped rods are connected with a mounting frame through first elastic telescopic rods, and laser range finders are mounted at the edges of the bottoms of the T-shaped rods. And the operation frame is transversely and movably arranged in a cavity in the lower end of the middle of the eight-wheel detection base through a hydraulic rod, the interior of the operation frame is connected with an operation plate through a second electric push rod, and a liquid outlet pipe at the bottom of the liquid spraying box is connected with a spraying head. According to the efficient pavement flatness detection equipment for the highway engineering, multi-range detection is carried out in the advancing process, and meanwhile spraying display is carried out at the corresponding uneven position according to the vehicle speed.

Description

Technical Field

[0001] The present invention relates to the technical field of road surface flatness detection, and particularly to an efficient road surface flatness detection device for highway engineering. Background Art

[0002] After the construction of a highway is completed, it is necessary to detect a number of data. Among them, the detection of road surface flatness aims to improve the smoothness of road driving and the safety of road use. The conventional operation is mostly to cooperate an eight-wheel detection mechanism with a traveling vehicle and use laser detection technology to detect the road surface in real time; The publication number (CN109373876B) involves a road surface flatness detection device, including: a steering part, which is used to contact the ground and travel, control steering and connect with an external vehicle; a traveling part, which is used to travel on the ground; a connecting part, which is used to connect the steering part and the traveling part; a detection part, which is arranged on the connecting part and is used to contact the ground and detect the flatness of the ground to output a flatness signal. This patent can improve the steering efficiency and connection effect, but when it is detecting, it is not convenient to detect the road surface efficiently and stably. During the traveling process, the detection range of the road surface is limited, and it is not convenient to detect and feedback the unevenness of a small area. At the same time, during the detection process, it is not convenient to mark the uneven area on the basis of continuous traveling, resulting in unclear where the unevenness specifically occurs. At the same time, not traveling continuously will also affect the detection efficiency.

[0003] In view of the above problems, there is an urgent need to innovate and design on the basis of the original road surface flatness detection equipment. Summary of the Invention

[0004] The purpose of the present invention is to provide an efficient road surface flatness detection device for highway engineering to solve the problems in the above background art that the existing road surface flatness detection device is not convenient to detect the road surface efficiently and stably, and at the same time, it is not convenient to mark the uneven area on the basis of continuous traveling. The technical solution of the present invention provides a solution significantly different from the prior art for the technical problem that the prior art solution is too single.

[0005] To achieve the above purpose, the present invention provides the following technical solution: An efficient road surface flatness detection device for highway engineering, including an eight-wheel detection seat, a controller is installed on the top of the eight-wheel detection seat, and a mounting plate is slidably arranged in the lower cavity in the middle of the eight-wheel detection seat through a first electric push rod; It further includes a T-shaped rod, the T-shaped rods are rotatably arranged at equal intervals at the bottom of the mounting plate, and the bottom of the T-shaped rod is connected with a mounting frame through a first elastic telescopic rod, and a roller is arranged at the bottom of the mounting frame, and a laser rangefinder is installed at the bottom edge of the T-shaped rod; An operation frame, the operation frame is horizontally movably arranged in the lower cavity in the middle of the eight-wheel detection seat through a hydraulic rod, and the operation frame is located behind the T-shaped rod. An operation plate is connected inside the operation frame through an electric push rod II, and a liquid spraying tank is connected to the lower half area of the operation frame through an elastic telescopic rod II. The liquid spraying tank is located below the operation plate, and a spray head is connected to the liquid outlet pipe at the bottom of the liquid spraying tank; A one-way liquid spraying assembly, the one-way liquid spraying assembly is arranged between the liquid spraying tank and the operation plate, and the one-way liquid spraying assembly is used for performing one-way liquid spraying operation through the spray head when the operation plate moves up and down; An adjustable transverse movement assembly, the adjustable transverse movement assembly is arranged between the bottom cavity of the eight-wheel detection seat and the operation frame, and the adjustable transverse movement assembly realizes the transverse movement of the liquid spraying tank during liquid spraying according to the moving speed of the eight-wheel detection seat.

[0006] Preferably, a toothed sleeve is sleeved on the T-shaped rod at the vertical position, and a rack is meshed on the outer side of the toothed sleeve, and the rack is fixed on the inner wall of the bottom cavity of the eight-wheel detection seat.

[0007] Preferably, the liquid spraying tanks are equally spaced in the operation frame, and the distribution positions of the liquid spraying tanks correspond to those of the T-shaped rod.

[0008] Preferably, the one-way liquid spraying assembly includes a mounting rod, and the mounting rod is limited and slidably arranged in the bottom cavity of the operation plate. The bottom of the mounting rod extends into the liquid pushing rod, and the liquid pushing rod is arranged through the liquid spraying tank.

[0009] Preferably, the liquid pushing rod is designed as an inverted "T" - shaped structure and fits and slides in the liquid spraying tank. A locking rod is horizontally arranged through the side of the top of the liquid pushing rod through a spring I. The inner end of the locking rod is located in the locking groove, and the locking groove is opened on the outer side of the mounting rod. The outer end of the locking rod is fixed with a pull rope, and the outer end of the pull rope is located outside the operation frame.

[0010] Preferably, the inner end part of the locking rod is designed as a right trapezoid structure, and the inner end of the locking rod is in concave - convex fit with the locking groove. The locking grooves are vertically equally spaced on the mounting rod, and the inclined surface of the inner end of the locking rod is downward.

[0011] Preferably, the adjustable transverse movement assembly includes an oil tank I, and the oil tank I is fixed on the inner wall of the bottom cavity of the eight - wheel detection seat. A piston rod I is installed in the oil tank I, and the oil tank I is connected to an oil tank II through a hose. The oil tank II is fixed outside the operation frame, and a piston rod II is installed in the oil tank II through a spring II. One end of the piston rod II penetrates through the operation frame and is connected to a contact plate, and the contact plate is rotatably arranged at the protruding position on the inner wall of the operation frame. A contact rod is arranged at the top of the contact plate, and the contact rod is fixed on the outer side of the mounting rod.

[0012] Preferably, the moving directions of the first piston rod and the second piston rod are the same, and one end of the second piston rod is designed as a spherical structure and is limited to slide in the corresponding cavity of the contact plate.

[0013] Preferably, the contact plate is inclined, and the contact end of the contact rod at the top of the contact plate is designed as an arc surface, and the arc surface area of the contact rod corresponds to the rotation area of the contact plate. The contact rod is located between the mounting rod and the T-shaped rod.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In the present invention, on the basis of arranging multiple rollers, through the horizontal reciprocating movement of the mounting plate, cooperating with the gear sleeve and the gear, the rollers can be driven to perform reciprocating swing on the basis of horizontal movement. On the one hand, this can increase the contact area between the rollers and the ground, avoiding the situation where the gap between two adjacent rollers cannot be detected. At the same time, through the swing of the rollers, the rolling direction can be adjusted during the horizontal movement, avoiding direct sliding friction. On the one hand, it reduces the wear of the rollers, improves the service life, and at the same time reduces the resistance during the traveling process. On the other hand, through multi-directional movement and rolling, the contact area with the ground is further increased, and it has a better detection effect for some small areas with unevenness. 2. In the present invention, an adjustable horizontal movement assembly is provided. On the one hand, it can adjust the distance between the operation frame and the rollers according to the preset traveling speed, so that when an uneven area is detected, the target area can be sprayed and marked by the second electric push rod cooperating with the one-way liquid spraying assembly within a stable driving time without affecting the traveling. Further, by the contact of the contact rod with the inclined contact plate, the liquid spraying tank can be pushed to move horizontally during the spraying and marking process, so that the spraying area and the area to be marked are in a relatively static state, further improving the marking accuracy. During this process, when adjusting the position of the operation frame according to the traveling speed, the inclination angle of the contact plate can also be adjusted, so that when spraying and marking, it can be applicable to different traveling speeds, further improving the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic front sectional structure view of the present invention; Figure 2 is a schematic side sectional structure view of the T-shaped rod of the present invention; Figure 3 is a schematic structure view of the gear sleeve and the rack of the present invention; Figure 4 is a schematic front sectional structure view of the operation frame of the present invention; Figure 5 For the present invention Figure 4 is an enlarged structure view at A in Figure 6 For the present invention Figure 4Schematic diagram of the enlarged structure at position B in [the relevant context]; Figure 7 For the present invention Figure 4 Schematic diagram of the enlarged structure at position C in [the relevant context].

[0016] In the figure: 1. Eight-wheel detection seat; 2. Controller; 3. Mounting plate; 4. Electric push rod 1; 5. T-shaped rod; 51. Gear sleeve; 52. Rack; 6. Elastic telescopic rod 1; 7. Mounting frame; 8. Roller; 9. Laser rangefinder; 10. Hydraulic rod; 11. Operation frame; 12. Electric push rod 2; 13. Operation plate; 14. Elastic telescopic rod 2; 15. Liquid spraying tank; 16. One-way liquid spraying component; 161. Mounting rod; 162. Liquid pushing rod; 163. Spring 1; 164. Locking rod; 165. Locking groove; 166. Pulling rope; 17. Adjustable transverse movement component; 171. Oil tank 1; 172. Piston rod 1; 173. Oil tank 2; 174. Spring 2; 175. Piston rod 2; 176. Contact plate; 177. Contact rod. Specific implementation manner

[0017] 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 making creative efforts shall fall within the protection scope of the present invention.

[0018] Please refer to Figures 1-7 , the present invention provides a technical solution: a high-efficiency pavement flatness detection device for highway engineering, including an eight-wheel detection seat 1, a controller 2, a mounting plate 3, an electric push rod 1 4, a T-shaped rod 5, a gear sleeve 51, a rack 52, an elastic telescopic rod 1 6, a mounting frame 7, a roller 8, a laser rangefinder 9, a hydraulic rod 10, an operation frame 11, an electric push rod 2 12, an operation plate 13, an elastic telescopic rod 2 14, a liquid spraying tank 15, a one-way liquid spraying component 16, a mounting rod 161, a liquid pushing rod 162, a spring 1 163, a locking rod 164, a locking groove 165, a pulling rope 166, an adjustable transverse movement component 17, an oil tank 1 171, a piston rod 1 172, an oil tank 2 173, a spring 2 174, a piston rod 2 175, a contact plate 176 and a contact rod 177. Embodiment

[0019] Please refer to Figures 1-3, a controller 2 is installed on the top of the eight-wheel detection seat 1, and a mounting plate 3 is slidably arranged in the lower cavity in the middle of the eight-wheel detection seat 1 through a first electric push rod 4; T-shaped rods 5 are rotatably arranged at equal intervals at the bottom of the mounting plate 3, and the bottom of the T-shaped rod 5 is connected to a mounting frame 7 through a first elastic telescopic rod 6, and a roller 8 is arranged at the bottom of the mounting frame 7. A laser rangefinder 9 is installed at the bottom edge of the T-shaped rod 5; a gear sleeve 51 is sleeved at the vertical position of the T-shaped rod 5, and a rack 52 is meshed with the outer side of the gear sleeve 51, and the rack 52 is fixed on the inner wall of the bottom cavity of the eight-wheel detection seat 1; During the traveling detection, the first electric push rod 4 drives the mounting plate 3 to reciprocate. While the gear sleeve 51 and the rack 52 are used to drive the roller 8 to reciprocate, the roller 8 can swing in different directions. While providing stable traveling, the detection range can be increased, which is convenient for cooperating with the laser rangefinder 9 to test the flatness of the road surface; Embodiment

[0020] On the basis of the first embodiment, please refer to Figure 1 and Figures 4-5 , an operation frame 11 is horizontally movably arranged in the lower cavity in the middle of the eight-wheel detection seat 1 through a hydraulic rod 10, and the operation frame 11 is located behind the T-shaped rod 5. An operation plate 13 is connected inside the operation frame 11 through a second electric push rod 12, and a liquid spraying tank 15 is connected to the lower half area of the operation frame 11 through a second elastic telescopic rod 14, and the liquid spraying tank 15 is located below the operation plate 13. A nozzle is connected to the bottom liquid outlet pipe of the liquid spraying tank 15; a one-way liquid spraying assembly 16 is arranged between the liquid spraying tank 15 and the operation plate 13, and the one-way liquid spraying assembly 16 is used for performing one-way liquid spraying operation through the nozzle when the operation plate 13 moves up and down; The liquid spraying tanks 15 are equally spaced in the operation frame 11, and the distribution positions of the liquid spraying tanks 15 correspond to those of the T-shaped rods 5; the one-way liquid spraying assembly 16 includes a mounting rod 161, and the mounting rod 161 is limited and slidably arranged in the bottom cavity of the operation plate 13, and the bottom of the mounting rod 161 extends into a liquid pushing rod 162, and the liquid pushing rod 162 is arranged through the liquid spraying tank 15; the liquid pushing rod 162 is designed in an inverted "T" shape and fits and slides in the liquid spraying tank 15, and a locking rod 164 is horizontally arranged through the side of the top of the liquid pushing rod 162 through a first spring 163. The inner end of the locking rod 164 is located in a locking groove 165, and the locking groove 165 is opened on the outer side of the mounting rod 161. The outer end of the locking rod 164 is fixed with a pull rope 166, and the outer end of the pull rope 166 is located outside the operation frame 11; the inner end part of the locking rod 164 is designed in a right-angled trapezoid structure, and the inner end of the locking rod 164 is in concave-convex fit with the locking groove 165, and the locking grooves 165 are equally spaced vertically on the mounting rod 161, and the inclined surface of the inner end of the locking rod 164 is downward; When the corresponding laser rangefinder 9 senses an uneven situation, the electric push rod two 12 drives the operation board 13 to move up and down once, and through the cooperation of the one-way liquid spraying component 16, the marking liquid in the liquid spraying tank 15 is sprayed out through the nozzle; Embodiment

[0021] On the basis of the second embodiment, please refer to Figure 1 , Figure 4 and Figures 6-7 , the adjustable transverse movement component 17 is arranged between the bottom cavity of the eight-wheel detection seat 1 and the operation frame 11, and the adjustable transverse movement component 17 realizes the transverse movement of the liquid spraying tank 15 during liquid spraying according to the moving speed of the eight-wheel detection seat 1; the adjustable transverse movement component 17 includes an oil tank one 171, and the oil tank one 171 is fixed on the inner wall of the bottom cavity of the eight-wheel detection seat 1. A piston rod one 172 is installed in the oil tank one 171, and the oil tank one 171 is connected to an oil tank two 173 through a hose. The oil tank two 173 is fixed on the outside of the operation frame 11, and a piston rod two 175 is installed in the oil tank two 173 through a spring two 174. One end of the piston rod two 175 penetrates through the operation frame 11 and is connected to a contact plate 176, and the contact plate 176 is rotatably arranged at the protruding position of the inner wall of the operation frame 11. A contact rod 177 is arranged at the top of the contact plate 176, and the contact rod 177 is fixed on the outside of the mounting rod 161; The moving direction of the piston rod one 172 is the same as the moving direction of the piston rod two 175, and one end of the piston rod two 175 is designed as a spherical structure and is limited to slide in the corresponding cavity of the contact plate 176; the contact plate 176 is inclined, and the contact end of the contact rod 177 at the top of the contact plate 176 is designed as an arc surface, and the arc surface area of the contact rod 177 corresponds to the rotation area of the contact plate 176. The contact rod 177 is located between the mounting rod 161 and the T-shaped rod 5; When marking the corresponding uneven position by spraying the marking liquid, through the cooperation of the contact plate 176 and the contact rod 177, the liquid spraying tank 15 can be driven to move backward during liquid spraying, so that during the continuous movement of the eight-wheel detection seat 1, the uneven area can be fixed-point sprayed with liquid, and at the same time, the position of the operation frame 11 and the inclination angle of the contact plate 176 can be adjusted according to the vehicle speed, which is suitable for fixed-point marking under different vehicle speeds.

[0022] Working principle: When using the high-efficiency road surface flatness detection equipment for highway engineering, first, the eight-wheel detection seat 1 is connected to the car or electric tricycle through a rod to facilitate driving it to move on the road, and then according to the actual vehicle speed requirements, it is set in the controller 2, and the hydraulic rod 10 is controlled by the controller 2 to drive the operating frame 11 to move horizontally in the bottom cavity of the eight-wheel detection seat 1, and adjust the distance between the operating frame 11 and the T-bar 5. This method is to enable the eight-wheel detection seat 1 to spray mark the uneven area passed by within a constant reaction and control time when the road surface is uneven under different vehicle speed conditions. Furthermore, the movement of the operating frame 11 can drive the piston rod 1 172 to move in the oil tank 1 171, squeeze the oil into the oil tank 2 173, drive the piston rod 2 175 to move, and then drive the resistance rod 177 to rotate through the piston rod 2 175 to achieve angle adjustment; When the test starts, the eight-wheel detection seat 1 moves, driving the roller 8 to rotate, so that the roller 8 contacts the road surface. During this process, the electric push rod 1 4 drives the T-bar 5 to reciprocate, and drives the T-bar 5 to rotate synchronously through the gear sleeve 51 and the rack 52, so that a row of rollers 8 can move and rotate, and increase the contact area between the roller 8 and the road surface without affecting driving, thereby improving the detection effect. When the corresponding roller 8 encounters an uneven road surface, the elastic telescopic rod 1 6 is used to make the mounting frame 7 and the roller 8 extend and retract, and the laser rangefinder 9 senses the distance change signal of the mounting frame 7, and then the controller 2 controls the electric push rod 2 12 to drive the operating panel 13 to move downward. The mounting rod 161 at the bottom of the operating panel 13 pushes the liquid push rod 162 downward under the action of the locking rod 164 and the locking groove 165, and the marking liquid in the spray tank 15 is sprayed to the ground, and then the electric push rod 2 12 drives the operating panel 1 When the lock 164 is in the state of being adjusted, the locking rod 164 and the locking groove 165 can be adjusted, and the lock 162 can be adjusted to the state of being adjusted.

[0023] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art. In the description of the present invention, unless otherwise specified, the meaning of "a plurality of" is two or more; the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, terms such as "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] 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 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. An efficient pavement evenness detection device for highway engineering, including an eight-wheel detection seat (1). A controller (2) is installed on the top of the eight-wheel detection seat (1), and a mounting plate (3) is slidably arranged in the lower cavity in the middle of the eight-wheel detection seat (1) through a first electric push rod (4). It is characterized in that: It also includes a T-shaped rod (5). The T-shaped rods (5) are rotatably arranged at equal intervals at the bottom of the mounting plate (3). The bottom of the T-shaped rod (5) is connected to a mounting frame (7) through a first elastic telescopic rod (6). A roller (8) is arranged at the bottom of the mounting frame (7). A laser rangefinder (9) is installed at the bottom edge of the T-shaped rod (5). An operation frame (11). The operation frame (11) is horizontally movably arranged in the lower cavity in the middle of the eight-wheel detection seat (1) through a hydraulic rod (10). The operation frame (11) is located behind the T-shaped rod (5). An operation plate (13) is connected inside the operation frame (11) through a second electric push rod (12). The lower half area of the operation frame (11) is connected to a liquid spraying tank (15) through a second elastic telescopic rod (14). The liquid spraying tank (15) is located below the operation plate (13). A spray head is connected to the bottom liquid outlet pipe of the liquid spraying tank (15). A one-way liquid spraying component (16). The one-way liquid spraying component (16) is arranged between the liquid spraying tank (15) and the operation plate (13), and the one-way liquid spraying component (16) is used for one-way liquid spraying operation through the spray head when the operation plate (13) moves up and down. An adjustable transverse movement component (17). The adjustable transverse movement component (17) is arranged between the bottom cavity of the eight-wheel detection seat (1) and the operation frame (11), and the adjustable transverse movement component (17) realizes the transverse movement of the liquid spraying tank (15) during liquid spraying according to the moving speed of the eight-wheel detection seat (1).

2. The high-efficiency pavement evenness detection device for highway engineering according to claim 1, wherein: A gear sleeve (51) is sleeved at the vertical position of the T-shaped rod (5). A rack (52) is meshed with the outside of the gear sleeve (51), and the rack (52) is fixed on the inner wall of the bottom cavity of the eight-wheel detection seat (1).

3. The high-efficiency pavement evenness detection device for highway engineering according to claim 1, characterized in that: The liquid spraying tanks (15) are evenly distributed in the operation frame (11), and the distribution positions of the liquid spraying tanks (15) correspond to those of the T-shaped rods (5).

4. An efficient pavement evenness detection device for highway engineering according to claim 1, characterized in that: The one-way liquid spraying component (16) includes a mounting rod (161). The mounting rod (161) is limited and slidably arranged in the bottom cavity of the operation plate (13). The bottom of the mounting rod (161) extends into a liquid pushing rod (162), and the liquid pushing rod (162) is arranged through the liquid spraying tank (15).

5. The high-efficiency pavement evenness detection device for highway engineering according to claim 4, characterized in that: The liquid pushing rod (162) is designed as an inverted "T" - shaped structure and fits and slides in the liquid spraying tank (15). A locking rod (164) is horizontally arranged through the side of the top of the liquid pushing rod (162) through a first spring (163). The inner end of the locking rod (164) is located in a locking groove (165), and the locking groove (165) is opened on the outside of the mounting rod (161). A pull rope (166) is fixed to the outer end of the locking rod (164), and the outer end of the pull rope (166) is located outside the operation frame (11).

6. An efficient pavement evenness detection device for highway engineering according to claim 5, characterized in that: The inner end of the locking rod (164) is designed as a right trapezoidal structure, and the inner end of the locking rod (164) is in concave-convex fit with the locking groove (165). The locking grooves (165) are vertically and equally spaced on the mounting rod (161). The inclined surface of the inner end of the locking rod (164) is downward.

7. The high-efficiency pavement evenness detection device for highway engineering according to claim 6, characterized in that: The adjustable transverse movement assembly (17) includes an oil tank one (171), and the oil tank one (171) is fixed on the inner wall of the bottom cavity of the eight-wheel detection seat (1). A piston rod one (172) is installed in the oil tank one (171), and the oil tank one (171) is connected to an oil tank two (173) through a hose. The oil tank two (173) is fixed on the outside of the operation frame (11). A piston rod two (175) is installed in the oil tank two (173) through a spring two (174). One end of the piston rod two (175) penetrates through the operation frame (11) and is connected to a contact plate (176). The contact plate (176) is rotatably arranged at the protruding position on the inner wall of the operation frame (11). A contact rod (177) is arranged at the top of the contact plate (176), and the contact rod (177) is fixed on the outside of the mounting rod (161).

8. An efficient pavement evenness detection device for highway engineering according to claim 7, characterized in that: The moving direction of the piston rod one (172) is the same as that of the piston rod two (175). One end of the piston rod two (175) is designed as a spherical structure and is limited to slide in the corresponding cavity of the contact plate (176).

9. The high-efficient pavement evenness detection device for highway engineering according to claim 8, characterized in that: The contact plate (176) is inclined. The contact end of the contact rod (177) at the top of the contact plate (176) is designed as an arc surface, and the arc surface area of the contact rod (177) corresponds to the rotation area of the contact plate (176). The contact rod (177) is located between the mounting rod (161) and the T-shaped rod (5).

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