Pavement flatness detection equipment for road and bridge engineering

Abstract

The invention discloses pavement flatness detection equipment for road and bridge engineering, and relates to the technical field of road and bridge engineering, and the pavement flatness detection equipment comprises a walking rack, a movable frame is installed below the rack, a plurality of floatable cleaning parts are arranged below the movable frame, and the cleaning parts are distributed along a V-shaped track. A sliding mechanism capable of lifting in a self-adaptive mode is installed between the movable frame and the cleaning part, a transverse plate is arranged behind the movable frame and connected with the rack in a lifting mode, a plurality of roller mechanisms walking along the road surface are arranged below the transverse plate, and a detection mechanism used for detecting the lifting condition of the roller mechanisms is installed on the transverse plate in an embedded mode. And an automatic liquid guide mechanism is mounted between the detection mechanism and the roller mechanism. According to the invention, sundries on the road surface can be effectively removed in the detection process, multi-point comprehensive detection can be conveniently carried out on the coverage area of the road surface in the mobile detection process, and the road surface can be automatically identified when the uneven road surface is detected, so that subsequent repair of the road surface is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of road and bridge engineering, and in particular to a road surface flatness detection device used in road and bridge engineering. Background Art

[0002] The smoothness of road surfaces in road and bridge projects is a key indicator of construction quality, driving safety, and comfort. Poor smoothness not only significantly reduces vehicle smoothness, accelerates component wear, and increases driving noise and fuel consumption, but can also lead to accidents at high speeds or inclement weather, seriously impacting the road's service life and service level. Therefore, high-precision and efficient road surface smoothness testing is crucial during the construction, acceptance, and routine maintenance of roads and bridges. It is fundamental to ensuring project quality, improving road performance, and making informed maintenance decisions.

[0003] Chinese patent publication number CN112681082B discloses a flatness detection device for road and bridge construction. The detection machine body is stably supported by legs. When the construction road surface is uneven, the counterweight ball is subjected to unbalanced force, causing it to slide toward one side of the first ring plate, thereby driving the belt to move. Depending on the inclination angle of the entire device, the belt and the detection machine body are at different angles, and the belt and the resistance block are in conflict, thereby driving the No. 1 piston to move. Under the action of water pressure, the No. 2 piston and rack in the detection tube are driven to move, thereby rotating the No. 1 gear. Under the action of the transmission member, the instrument panel is operated and the corresponding flatness indication is displayed. However, this technical solution still has the following defects: 1. During the road surface inspection process, it is impossible to conduct high-density, multi-point synchronous comprehensive inspection of the entire area covered by the wheel tracks. This can easily lead to local undulations or depressions in the walking coverage area that are not effectively detected, forming detection blind spots, affecting the comprehensiveness and accuracy of the results; 2. During walking, there will inevitably be uneven areas on the road, especially sunken areas. During walking testing, debris such as gravel in these areas is difficult to clean up, which can easily affect the test results. 3. Uneven areas cannot be automatically marked when detected, and manual auxiliary marking is required, which affects the efficiency of subsequent repairs. Summary of the Invention

[0004] The present invention provides a road surface flatness detection device for road and bridge engineering, which can solve the problems in the prior art that the flatness detection device cannot fully detect the covered area during the walking detection process, the gravel and debris in the sunken road surface cannot be effectively removed, and it is inconvenient to automatically mark the uneven area when it is detected.

[0005] The purpose of the present invention can be achieved through the following technical solutions: A road surface flatness detection device for road and bridge engineering comprises a movable frame, a movable frame is installed below the frame, a plurality of floating cleaning parts are provided below the movable frame, and the cleaning parts are distributed along a V-shaped track, a sliding mechanism that can adaptively rise and fall is installed between the movable frame and the cleaning parts, a horizontal plate is provided at the rear of the movable frame, and the horizontal plate is connected to the frame in a lifting manner, a plurality of roller mechanisms that travel along the road surface are provided below the horizontal plate, a detection mechanism for detecting the lifting status of the roller mechanism is embedded on the horizontal plate, and an automatic liquid guiding mechanism is installed between the detection mechanism and the roller mechanism, a liquid storage shell is installed on the top of the frame, and when the roller mechanism is lifted or lowered, the automatic liquid guiding mechanism guides the pigment in the liquid storage shell to the road surface corresponding to the roller mechanism.

[0006] As a further solution of the present invention: the cleaning part includes a brush plate, bristles, a positioning protrusion and a ball. The positioning protrusion is installed at the bottom center of the brush plate, the bristles are evenly distributed on the lower surface of the brush plate, and a rolling groove for the ball to roll is provided at the bottom of the positioning protrusion.

[0007] As a further solution of the present invention: the sliding mechanism includes a first cylinder, a piston, a sliding rod and a first spring. The first cylinder is embedded in the movable frame, the bottom end of the sliding rod is connected to the top of the brush plate, and the top end of the sliding rod slides through the bottom of the first cylinder and is connected to the piston. The piston is slidably connected to the inner cavity of the first cylinder. The first spring is sleeved on the sliding rod and installed between the piston and the bottom of the first cylinder.

[0008] As a further solution of the present invention: the frame includes a supporting plate, support legs, walking wheels and a push handle, the supporting plate is arranged in a V-shaped structure at one end close to the movable frame, the three walking wheels are distributed in a triangular shape below the supporting plate, and the walking wheels are connected to the bottom of the supporting plate through the support legs, and the push handle is symmetrically installed on the upper surface of the supporting plate away from the movable frame.

[0009] As a further solution of the present invention: the movable frame includes a V-shaped plate and a U-shaped plate, and the V-shaped plate and the U-shaped plate are both hollow structures with openings at both ends, and the V-shaped plate is connected to the inner cavity of the U-shaped plate, the bottom end of the first cylinder is connected to the lower surface of the inner cavity of the V-shaped plate, and the cylinder wall of the first cylinder near the bottom end is provided with circumferentially distributed through holes, a negative pressure pump is installed on the top of the frame, the suction end of the negative pressure pump is connected to an L-shaped tube that passes through the frame, a telescopic tube is connected between the L-shaped tube and the inner cavity of the U-shaped plate, a first cylinder is symmetrically installed between the U-shaped plate and the frame, and a second cylinder is installed between the horizontal plate and the frame.

[0010] As a further solution of the present invention: the roller mechanism includes an inverted U-shaped frame, a wheel body and a rotating shaft, the two wheel bodies are symmetrically distributed in the U-shaped frame, and the wheel body is rotatably connected to the inverted U-shaped frame through the rotating shaft.

[0011] As a further solution of the present invention: the detection mechanism includes a second cylinder, a pressure sensor, a second spring, an annular block, a movable rod and a guide rod. The second cylinder passes through the horizontal plate and is fixedly connected to the horizontal plate. The pressure sensor is installed on the lower surface of the top end of the second cylinder. The annular block is slidably arranged in the second cylinder, and the annular block and the pressure sensor are connected by a second spring. The movable rod is connected to the bottom of the annular block, and its bottom end extends to the bottom of the second cylinder. The guide rod is installed on the top of the second cylinder, and the guide rod slides through the frame. A controller electrically connected to the pressure sensor is installed on the frame.

[0012] As a further solution of the present invention: the automatic liquid guide mechanism includes a liquid inlet pipe, a tympanic tube, a transition ring, a plug, a liquid outlet pipe, a connecting pipe, an annular shell, a magnetic assembly and a hose. The liquid inlet pipe is connected to the bottom end of the movable rod, and the liquid inlet pipe is connected to the inner cavity of the liquid storage shell through the hose. The transition ring is connected between the two tympanic tubes, and the tympanic tube at the top is connected to the bottom end of the liquid inlet pipe. The liquid outlet pipe is a bottom sealing structure, and the bottom end of the liquid outlet pipe is connected to the top of the inverted U-shaped frame. The bottom of the annular shell is provided with a liquid outlet hole, and the annular shell is sleeved on the rotating shaft. The liquid outlet pipe is connected to the annular shell through a connecting pipe, and the top end of the liquid outlet pipe is connected to the tympanic tube at the bottom end. The plug is arranged in the transition ring, and the plug is connected to the second cylinder through the magnetic assembly.

[0013] As a further solution of the present invention: the magnetic attraction component includes an annular electromagnet, an inverted L-shaped electromagnet, a sliding part and an inverted T-shaped rod, the top end of the inverted T-shaped rod is connected to the bottom of the blockage, and a through groove for the two ends of the inverted T-shaped rod to pass through is opened on the wall of the liquid outlet pipe. The annular electromagnet is slidably sleeved on the outside of the liquid outlet pipe, and the inner side of the annular electromagnet is connected to the two ends of the inverted T-shaped rod. The inverted L-shaped electromagnet is installed on the outer wall of the bottom end of the second cylinder, the sliding part is slidably sleeved on the inverted L-shaped electromagnet, and the sliding part is connected to the annular electromagnet. The annular electromagnet can be positioned and adsorbed on the liquid outlet pipe when energized, and the inverted L-shaped electromagnet is used to position and adsorb the sliding part when energized.

[0014] As a further solution of the present invention: the sliding mechanism also includes a sealing tube and a sealing plug, the sealing tube is sleeved on the outside of the sliding rod, and its top end is connected to the bottom of the V-shaped plate, the sealing plug is sleeved on the sliding rod, and is fixedly installed in the sealing tube.

[0015] Beneficial effects of the present invention: 1. In the present invention, the cleaning members distributed along a V-shaped track form a fan-shaped cleaning area that is narrow in front and wide in the back during the movement of the equipment, ensuring that all areas covered by the frame's travel track are cleaned in advance, avoiding the presence of road debris that affects the flatness detection effect. The cleaning members use a sliding mechanism to adaptively float up and down according to the unevenness of the road surface. When encountering a concave area, the cleaning members can adaptively sink to ensure that the bristles are always close to the bottom of the pit, thereby facilitating the effective removal of gravel and debris in the concave area and avoiding its impact on subsequent flatness detection.

[0016] 2. In the present invention, the detection mechanism not only facilitates the adaptive lifting of multiple roller mechanisms running along the road surface under the cross plate, but also facilitates the accurate detection of the specific values ​​of road surface convexity or concavity during the lifting process. In addition, multiple laterally distributed roller mechanisms cooperate with the detection mechanism to facilitate the formation of lateral multi-point synchronous detection under the frame, and real-time collection of height data of multiple lateral points to ensure that the area covered during the frame movement can be effectively detected, which is conducive to improving the detection effect of road surface flatness.

[0017] 3. In the present invention, the automatic liquid guiding mechanism is conveniently linked with the lifting and lowering of the roller mechanism during the detection process. When the roller mechanism rises when encountering a raised road surface or descends when encountering a sunken road surface, the automatic liquid guiding mechanism can automatically guide the pigment in the liquid storage shell to the bottom of the wheel body, so that the detected uneven road surface can be marked in time, thereby realizing the integration of detection and marking. Not only does it eliminate the need for manual auxiliary marking, which is beneficial to improving the subsequent repair efficiency, but the marked position completely coincides with the defect point. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 This is a first-perspective stereoscopic diagram of a road surface smoothness detection device for road and bridge engineering according to the present invention; Figure 2 This is a second perspective view of a road surface smoothness detection device for road and bridge engineering according to the present invention; Figure 3 This is a three-dimensional diagram of the connection between the cleaning member and the movable frame in a road surface flatness detection device for road and bridge engineering according to the present invention; Figure 4 This is a cross-sectional view of the connection portion between the cleaning member and the sliding mechanism in a road surface flatness detection device for road and bridge engineering according to the present invention; Figure 5 This is a three-dimensional diagram of a cleaning component in a road surface flatness detection device used in road and bridge engineering according to the present invention; Figure 6This is a three-dimensional diagram of the connection between the roller mechanism and the detection mechanism in a road surface flatness detection device for road and bridge engineering according to the present invention; Figure 7 This is an exploded view of an annular housing and a roller mechanism in a road surface flatness detection device for road and bridge engineering according to the present invention; Figure 8 This is a cross-sectional view of a detection mechanism in a road surface flatness detection device used in road and bridge engineering according to the present invention; Figure 9 This is a three-dimensional diagram of an automatic liquid guiding mechanism in a road surface flatness detection device used in road and bridge engineering according to the present invention; Figure 10 It is a cross-sectional view of an automatic liquid guiding mechanism in a road surface flatness detection device used in road and bridge engineering according to the present invention.

[0020] In the figure: 100, frame; 101, bearing plate; 1011, negative pressure pump; 1012, L-shaped tube; 1013, telescopic tube; 1014, first cylinder; 1015, second cylinder; 1016, controller; 102, support leg; 103, walking wheel; 104, push handle; 200, movable frame; 201, V-shaped plate; 202, U-shaped plate; 300, cleaning member; 301, brush plate; 302, bristles; 303, positioning protrusion; 304, ball bearing; 400, sliding mechanism; 401, first cylinder; 4011, through hole; 402, piston; 403, slide rod; 404, first spring; 405, sealing tube; 406, sealing plug; 500, cross plate; 600, roller Mechanism; 601, inverted U-shaped frame; 602, wheel body; 603, rotating shaft; 700, detection mechanism; 701, second cylinder; 702, pressure sensor; 703, second spring; 704, annular block; 705, movable rod; 706, guide rod; 800, automatic liquid guiding mechanism; 801, liquid inlet pipe; 802, lumbar drum tube; 803, transition ring; 804, blockage; 805, liquid outlet pipe; 8051, through groove; 806, connecting pipe; 807, annular shell; 8071, liquid outlet hole; 808, magnetic attraction component; 8081, annular electromagnet; 8082, inverted L-shaped electromagnet; 8083, sliding part; 8084, inverted T-shaped rod; 809, hose; 900, liquid storage shell. DETAILED DESCRIPTION

[0021] The specific embodiments of the present invention are described in detail below, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0022] like Figures 1-10As shown, the present invention is a road surface flatness detection device for road and bridge engineering, comprising a movable frame 100, a movable frame 200 is installed below the frame 100, a plurality of floating cleaning members 300 are provided below the movable frame 200, and the cleaning members 300 are distributed along a V-shaped track, a sliding mechanism 400 capable of adaptive lifting is installed between the movable frame 200 and the cleaning members 300, a horizontal plate 500 is provided at the rear of the movable frame 200, and the horizontal plate 500 is connected to the frame 100 in a lifting manner. Next, a plurality of roller mechanisms 600 that move along the road surface are provided under the horizontal plate 500. A detection mechanism 700 for detecting the lifting and lowering status of the roller mechanism 600 is embedded in the horizontal plate 500, and an automatic liquid guiding mechanism 800 is installed between the detection mechanism 700 and the roller mechanism 600. A liquid storage shell 900 is installed on the top of the frame 100. When the roller mechanism 600 is lifted or lowered, the automatic liquid guiding mechanism 800 guides the paint in the liquid storage shell 900 to the road surface corresponding to the roller mechanism 600.

[0023] It should be noted that when in use, the movable frame 200 is pushed to a standard flat road surface as a reference, and the movable frame 200 is adjusted to be lowered until the cleaning member 300 contacts the road surface. At the same time, the cross plate 500 is adjusted to be lowered so that the roller mechanism 600 contacts the road surface, and the movable frame 200 is pushed forward. During the movement, the cleaning member 300 is first used to remove debris from the road surface. The sliding mechanism 400 can be used to enable the cleaning member 300 to adaptively float when the movable frame 200 encounters an uneven road surface during movement, thereby facilitating the effective removal of debris from the recessed area. At the same time, after the road debris is cleared, the roller mechanism 600 will move along it. The detection mechanism 700 can not only enable the roller mechanism 600 to adaptively rise and fall when encountering an uneven road surface, but also accurately detect the specific value of the road surface convexity or concavity during the lifting process, thereby achieving comprehensive multi-point detection of the walking coverage area. During the lifting process, the roller mechanism 600 is linked to the automatic liquid guide mechanism 800, which can automatically spray paint at the uneven surface for marking when it detects it, facilitating subsequent efficient repair.

[0024] like Figure 1 and Figure 5 As shown, the cleaning member 300 includes a brush plate 301, bristles 302, a positioning protrusion 303 and a ball 304. The positioning protrusion 303 is installed at the bottom center of the brush plate 301, the bristles 302 are evenly distributed on the lower surface of the brush plate 301, and a rolling groove for the ball 304 to roll is provided at the bottom of the positioning protrusion 303.

[0025] It should be noted that, in this embodiment, the vertical distance between the lowest end of the ball 304 and the lower surface of the brush plate 301 is less than the length of the bristles 302, that is, when the ball 304 at the bottom of the positioning protrusion 303 rolls along the road surface, the bristles 302 are in effective contact with the road surface.

[0026] like Figure 3-Figure 5 As shown, the sliding mechanism 400 includes a first cylinder 401, a piston 402, a sliding rod 403 and a first spring 404. The first cylinder 401 is embedded in the movable frame 200, the bottom end of the sliding rod 403 is connected to the top of the brush plate 301, and the top end of the sliding rod 403 slides through the bottom of the first cylinder 401 and is connected to the piston 402. The piston 402 is slidably connected to the inner cavity of the first cylinder 401. The first spring 404 is sleeved on the sliding rod 403, and the first spring 404 is installed between the piston 402 and the bottom of the first cylinder 401.

[0027] It should be noted that, in the present embodiment, an air inlet hole is provided on the top of the first cylinder 401. When detecting the road surface, the movable frame 200 is controlled to drive the ball 304 at the bottom of the positioning protrusion 303 to contact the road surface, and then the movable frame 200 is controlled to move downward, so that the slide rod 403 drives the piston 402 to slide upward relative to the first cylinder 401 and stretch the first spring 404. In this state, when encountering a concave road surface in the future, the first spring 404 can adaptively drive the piston 402 to slide downward, thereby facilitating the ball 304 at the bottom of the protrusion 303 to always maintain a state of resistance against the road surface.

[0028] like Figure 1-Figure 2 As shown, the frame 100 includes a supporting plate 101, supporting legs 102, walking wheels 103 and a push handle 104. The supporting plate 101 is arranged in a V-shaped structure at one end close to the movable frame 200. The three walking wheels 103 are distributed in a triangular shape below the supporting plate 101, and the walking wheels 103 are connected to the bottom of the supporting plate 101 through the supporting legs 102. The push handle 104 is symmetrically installed on the upper surface of the supporting plate 101 away from the movable frame 200.

[0029] It should be noted that the push handle 104 facilitates pushing the frame 100 , and the running wheels 103 cooperate with the supporting legs 102 to facilitate controlling the entire frame 100 to move forward.

[0030] like Figures 1-4 As shown, the movable frame 200 includes a V-shaped plate 201 and a U-shaped plate 202. Both the V-shaped plate 201 and the U-shaped plate 202 are hollow structures with openings at both ends, and the V-shaped plate 201 is connected to the inner cavity of the U-shaped plate 202. The bottom end of the first cylinder 401 is connected to the lower surface of the inner cavity of the V-shaped plate 201, and the cylinder wall of the first cylinder 401 near the bottom end is provided with circumferentially distributed through holes 4011. A negative pressure pump 1011 is installed on the top of the frame 100, and the suction end of the negative pressure pump 1011 is connected to an L-shaped tube 1012 that passes through the frame 100. A telescopic tube 1013 is connected between the L-shaped tube 1012 and the inner cavity of the U-shaped plate 202. A first cylinder 1014 is symmetrically installed between the U-shaped plate 202 and the frame 100, and a second cylinder 1015 is installed between the horizontal plate 500 and the frame 100.

[0031] It should be noted that the first cylinder 1014 and the second cylinder 1015 are used to facilitate the lifting and lowering control of the movable frame 200 and the horizontal plate 500. In order to ensure that the cleaning member 300 can maintain a state of resistance to the road surface when encountering a deeper sunken road surface, in this embodiment, by extracting the inner cavity gas of the V-shaped plate 201 and the U-shaped plate 202, in conjunction with the through hole 4011, it is convenient to keep the area below the piston 402 in the first cylinder 401 in a negative pressure state, so that under the action of external air pressure, downward pressure is always applied to the piston 402, ensuring that when encountering a deeper sunken area, the cleaning member 300 can also effectively remove debris in the area.

[0032] like Figure 2 and Figure 7 As shown, the roller mechanism 600 includes an inverted U-shaped frame 601, a wheel body 602 and a rotating shaft 603. The two wheel bodies 602 are symmetrically distributed in the U-shaped frame, and the wheel body 602 is rotatably connected to the inverted U-shaped frame 601 through the rotating shaft 603.

[0033] It should be noted that, in this embodiment, the rotating shaft 603 passes through the two wheel bodies 602 and is coaxially connected thereto, and the rotating shaft 603 is rotatably connected to the inverted U-shaped frame 601 via a bearing.

[0034] like Figure 6 and Figure 8 As shown, the detection mechanism 700 includes a second cylinder 701, a pressure sensor 702, a second spring 703, an annular block 704, a movable rod 705 and a guide rod 706. The second cylinder 701 passes through the horizontal plate 500 and is fixedly connected thereto. The pressure sensor 702 is installed on the lower surface of the top end of the second cylinder 701. The annular block 704 is slidably arranged in the second cylinder 701, and the annular block 704 and the pressure sensor 702 are connected by the second spring 703. The movable rod 705 is connected to the bottom of the annular block 704, and its bottom end extends to the bottom of the second cylinder 701. The guide rod 706 is installed on the top of the second cylinder 701, and the guide rod 706 slides through the frame 100. A controller 1016 electrically connected to the pressure sensor 702 is installed on the frame 100.

[0035] It should be noted that when detecting the road surface, the horizontal plate 500 is first controlled to descend as a whole. When the roller mechanism 600 contacts the road surface, the horizontal plate 500 is continued to be controlled to descend a certain distance, so that the second cylinder 701 slides down relative to the annular block 704 and compresses the second spring 703. The pressure sensor 702 is used to conveniently detect the reaction force generated by the second spring 703. If the values ​​detected by all the pressure sensors 702 are the same (set to a), the road surface at this time can be set as the reference road surface. In the subsequent process, if the values ​​detected by the pressure sensors 702 increase, If the pressure is larger, it proves that the road surface here is convex, and vice versa, it proves that the road surface here is concave. The controller 1016 can be used to analyze and calculate the specific value detected by the pressure sensor 702. In this embodiment, the spring coefficient of the second spring 703 is set to K, the detected pressure change value is F (the value increased or decreased relative to a), and the deformation of the second spring 703 is X, then X=K / K. If the detected pressure during the detection process increases relative to the initial set value, the height of the convexity here is X. Similarly, if the detected pressure decreases relative to the initial set value, the depth of the concave here is X.

[0036] like Figure 6 and Figure 9-10 As shown, the automatic liquid guide mechanism 800 includes a liquid inlet pipe 801, a tympanic tube 802, a transition ring 803, a plug 804, a liquid outlet pipe 805, a connecting pipe 806, an annular shell 807, a magnetic attraction component 808 and a hose 809. The liquid inlet pipe 801 is connected to the bottom end of the movable rod 705, and the liquid inlet pipe 801 is connected to the inner cavity of the liquid storage shell 900 through the hose 809. The transition ring 803 is connected between the two tympanic tubes 802, and the top tympanic tube 802 is connected to the bottom end of the liquid inlet pipe 801. The liquid outlet pipe 805 is a bottom sealing structure, and the bottom end of the liquid outlet pipe 805 is connected to the top of the inverted U-shaped frame 601. The bottom of the annular shell 807 is provided with a liquid outlet hole 8071, and the annular shell 807 is sleeved on the rotating shaft 603. The liquid outlet pipe 805 is connected to the annular shell 807 through the connecting pipe 806, and the top end of the liquid outlet pipe 805 is connected to the waist drum tube 802 at the bottom end. The plug 804 is arranged in the transition ring 803, and the plug 804 is connected to the second cylinder 701 through the magnetic attraction component 808.

[0037] It should be noted that in this embodiment, the inner diameter of the waist drum tube 802 gradually decreases from the middle to the two ends, and the height of the transition ring 803 and the thickness of the plug 804 are designed to be smaller values ​​to ensure that when the waist drum tube 802 undergoes a smaller relative displacement relative to the plug 804, the pigment in the upper waist drum tube 802 can enter the lower waist drum tube 802 along the transition ring 803, and then enter the annular shell 807 through the liquid outlet pipe 805 and the connecting pipe 806 in turn, and finally the pigment is guided to the corresponding road surface for marking by the liquid outlet hole 8071.

[0038] like Figure 6 and Figure 9-10 As shown, the magnetic attraction component 808 includes an annular electromagnet 8081, an inverted L-shaped electromagnet 8082, a sliding member 8083 and an inverted T-shaped rod 8084. The top of the inverted T-shaped rod 8084 is connected to the bottom of the plug 804. A through groove 8051 is provided on the wall of the liquid outlet pipe 805 for the two ends of the inverted T-shaped rod 8084 to pass through. The annular electromagnet 8081 is slidably sleeved on the outside of the liquid outlet pipe 805, and the inner side of the annular electromagnet 8081 is connected to the two ends of the inverted T-shaped rod 8084. The inverted L-shaped electromagnet 8082 is installed on the outer wall of the bottom end of the second cylinder 701. The sliding member 8083 is slidably sleeved on the inverted L-shaped electromagnet 8082, and the sliding member 8083 is connected to the annular electromagnet 8081. When the annular electromagnet 8081 is energized, it can be positioned and adsorbed on the liquid outlet pipe 805. When the inverted L-shaped electromagnet 8082 is energized, it is used to position and adsorb the sliding member 8083.

[0039] It should be noted that, in this embodiment, the annular electromagnet 8081 always remains energized during the process of adjusting the horizontal plate 500 to descend before detection, while the inverted L-shaped electromagnet 8082 remains in an unpowered state. In this state, it is ensured that the waist drum tube 802 can rise and fall synchronously with the blockage 804, and there is no relative sliding between the two, so that the paint does not flow out; when walking detection is required, the annular electromagnet 8081 remains in an unpowered state, while the inverted L-shaped electromagnet 8082 always remains energized. At this time, the sliding part 8083 is positioned and adsorbed on the inverted L-shaped electromagnet 8082. When the roller mechanism 600 is adaptively raised and lowered, the waist drum tube 802 can rise and fall relative to the blockage 804, thereby facilitating the export of paint, so that the roller mechanism 600 can automatically export paint for marking when an uneven road surface is detected.

[0040] like Figure 3-Figure 4 As shown, the sliding mechanism 400 also includes a sealing tube 405 and a sealing plug 406. The sealing tube 405 is sleeved on the outside of the sliding rod 403, and its top end is connected to the bottom of the V-shaped plate 201. The sealing plug 406 is sleeved on the sliding rod 403 and fixedly installed in the sealing tube 405.

[0041] It should be noted that, in this embodiment, the slide rod 403 slides through the bottom of the first cylinder 401 and the bottom of the inner cavity of the V-shaped plate 201. In order to ensure that the gas in the inner cavity of the V-shaped plate 201 can be effectively extracted, it is necessary to ensure the sealing between the slide rod 403 and the bottom of the inner cavity of the V-shaped plate 201. The use of the sealing tube 405 and the sealing plug 406 not only does not affect the normal sliding of the slide rod 403, but also ensures that when the gas in the inner cavity of the V-shaped plate 201 is extracted, the outside gas will not be replenished through the gap between the slide rod 403 and the bottom of the inner cavity of the V-shaped plate 201, which is conducive to maintaining a better negative pressure state.

[0042] The above disclosures are only a few specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the scope of protection of the present invention.

Claims

1. A road surface flatness detection device for road and bridge engineering, comprising a movable frame (100), characterized in that: A movable frame (200) is installed below the frame (100), and a plurality of floating cleaning members (300) are provided below the movable frame (200), and the cleaning members (300) are distributed along a V-shaped track. A sliding mechanism (400) capable of adaptive lifting is installed between the movable frame (200) and the cleaning members (300). A transverse plate (500) is provided at the rear of the movable frame (200), and the transverse plate (500) is connected to the frame (100) in a lifting manner. A plurality of sliding members that move along the road surface are provided below the transverse plate (500). A roller mechanism (600) is provided, wherein a detection mechanism (700) for detecting the lifting and lowering condition of the roller mechanism (600) is embedded on the horizontal plate (500), and an automatic liquid guiding mechanism (800) is installed between the detection mechanism (700) and the roller mechanism (600). A liquid storage shell (900) is installed on the top of the frame (100). When the roller mechanism (600) is lifted or lowered, the automatic liquid guiding mechanism (800) guides the pigment in the liquid storage shell (900) to the road surface corresponding to the roller mechanism (600).

2. The road surface flatness detection device for road and bridge engineering according to claim 1, characterized in that: The cleaning member (300) comprises a brush plate (301), bristles (302), a positioning protrusion (303), and a ball (304); the positioning protrusion (303) is mounted at the bottom center of the brush plate (301); the bristles (302) are evenly distributed on the lower surface of the brush plate (301); and a rolling groove for the ball (304) to roll is provided at the bottom of the positioning protrusion (303).

3. The road surface flatness detection device for road and bridge engineering according to claim 2, characterized in that: The sliding mechanism (400) includes a first cylinder (401), a piston (402), a sliding rod (403) and a first spring (404). The first cylinder (401) is embedded in the movable frame (200). The bottom end of the sliding rod (403) is connected to the top of the brush plate (301), and the top end of the sliding rod (403) slides through the bottom of the first cylinder (401) and is connected to the piston (402). The piston (402) is slidably connected to the inner cavity of the first cylinder (401). The first spring (404) is sleeved on the sliding rod (403) and is installed between the piston (402) and the bottom of the first cylinder (401).

4. The road surface flatness detection device for road and bridge engineering according to claim 1, characterized in that: The frame (100) includes a supporting plate (101), supporting legs (102), running wheels (103) and a push handle (104). The supporting plate (101) is arranged in a V-shaped structure at one end close to the movable frame (200). The three running wheels (103) are distributed in a triangular shape below the supporting plate (101). The running wheels (103) are connected to the bottom of the supporting plate (101) through the supporting legs (102). The push handle (104) is symmetrically mounted on the upper surface of the supporting plate (101) at one end away from the movable frame (200).

5. The road surface flatness detection device for road and bridge engineering according to claim 3, characterized in that: The movable frame (200) comprises a V-shaped plate (201) and a U-shaped plate (202), both of which are hollow structures with openings at both ends, and the inner cavities of the V-shaped plate (201) and the U-shaped plate (202) are connected, the bottom end of the first cylinder (401) is connected to the lower surface of the inner cavity of the V-shaped plate (201), and the cylinder wall of the first cylinder (401) near the bottom end is provided with circumferentially distributed through holes (4011), and the frame (100 ) is installed on the top of the frame (100), the suction end of the negative pressure pump (1011) is connected to an L-shaped tube (1012) that passes through the frame (100), a telescopic tube (1013) is connected between the L-shaped tube (1012) and the inner cavity of the U-shaped plate (202), a first cylinder (1014) is symmetrically installed between the U-shaped plate (202) and the frame (100), and a second cylinder (1015) is installed between the horizontal plate (500) and the frame (100).

6. The road surface flatness detection device for road and bridge engineering according to claim 1, characterized in that: The roller mechanism (600) comprises an inverted U-shaped frame (601), a wheel body (602) and a rotating shaft (603). The two wheel bodies (602) are symmetrically distributed in the U-shaped frame, and the wheel body (602) is rotationally connected to the inverted U-shaped frame (601) via the rotating shaft (603).

7. The road surface flatness detection device for road and bridge engineering according to claim 6, characterized in that: The detection mechanism (700) includes a second cylinder (701), a pressure sensor (702), a second spring (703), an annular block (704), a movable rod (705) and a guide rod (706). The second cylinder (701) passes through the horizontal plate (500) and is fixedly connected thereto. The pressure sensor (702) is mounted on the lower surface of the top end of the second cylinder (701). The annular block (704) is slidably arranged in the second cylinder (701), and the annular block (705) is fixed to the second cylinder (701). 704) is connected to the pressure sensor (702) via a second spring (703), the movable rod (705) is connected to the bottom of the annular block (704), and its bottom end extends to the bottom of the second cylinder (701), the guide rod (706) is installed on the top of the second cylinder (701), and the guide rod (706) slides through the frame (100), and a controller (1016) electrically connected to the pressure sensor (702) is installed on the frame (100).

8. The road surface flatness detection device for road and bridge engineering according to claim 7, characterized in that: The automatic liquid guide mechanism (800) includes a liquid inlet pipe (801), a tympanic tube (802), a transition ring (803), a plug (804), a liquid outlet pipe (805), a connecting pipe (806), an annular shell (807), a magnetic attraction component (808) and a hose (809). The liquid inlet pipe (801) is connected to the bottom end of the movable rod (705), and the liquid inlet pipe (801) is connected to the inner cavity of the liquid storage shell (900) through the hose (809). The transition ring (803) is connected between the two tympanic tubes (802), and the top tympanic tube (802) is connected to the bottom end of the liquid inlet pipe (801). The liquid outlet pipe (805) is a bottom-end sealing structure, and the bottom end of the liquid outlet pipe (805) is connected to the top of the inverted U-shaped frame (601). The bottom of the annular shell (807) is provided with a liquid outlet hole (8071), and the annular shell (807) is sleeved on the rotating shaft (603). The liquid outlet pipe (805) is connected to the annular shell (807) through a connecting pipe (806), and the top end of the liquid outlet pipe (805) is connected to the waist drum tube (802) at the bottom end. The plug (804) is provided in the transition ring (803), and the plug (804) is connected to the second cylinder (701) through a magnetic attraction component (808).

9. The road surface flatness detection device for road and bridge engineering according to claim 8, characterized in that: The magnetic attraction assembly (808) includes an annular electromagnet (8081), an inverted L-shaped electromagnet (8082), a sliding member (8083) and an inverted T-shaped rod (8084). The top of the inverted T-shaped rod (8084) is connected to the bottom of the plug (804). A through groove (8051) for the two ends of the inverted T-shaped rod (8084) to pass through is provided on the wall of the liquid outlet pipe (805). The annular electromagnet (8081) is slidably sleeved on the outside of the liquid outlet pipe (805), and the annular electromagnet (8081) is The inner side is connected to both ends of the inverted T-shaped rod (8084), the inverted L-shaped electromagnet (8082) is installed on the outer wall of the bottom end of the second cylinder (701), the sliding member (8083) is slidably sleeved on the inverted L-shaped electromagnet (8082), and the sliding member (8083) is connected to the annular electromagnet (8081), and the annular electromagnet (8081) can be positioned and adsorbed on the liquid outlet pipe (805) when energized, and the inverted L-shaped electromagnet (8082) is used to position and adsorb the sliding member (8083) when energized.

10. The road surface flatness detection device for road and bridge engineering according to claim 5, characterized in that: The sliding mechanism (400) further comprises a sealing tube (405) and a sealing plug (406), wherein the sealing tube (405) is sleeved on the outside of the sliding rod (403) and the top end of the sealing tube is connected to the bottom of the V-shaped plate (201), and the sealing plug (406) is sleeved on the sliding rod (403) and fixedly installed in the sealing tube (405).

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