Pavement leveling instrument for highway construction

Abstract

The utility model belongs to the technical field of road surface detection, particularly relates to a road surface leveling instrument for road construction, and provides the following scheme aiming at the problem that the precision is influenced by vehicle body vibration interference and road surface impurities in dynamic measurement: the road surface leveling instrument comprises a bottom plate, an outer cover cylinder penetrating through the bottom plate and an inertia reference leveling assembly arranged in the outer cover cylinder. The component hangs a U-shaped outer frame through a ball socket seat and a swing connecting rod with a linear damper, and then is connected with a U-shaped inner frame through a cross shaft assembly to form a multi-stage vibration reduction and motion decoupling system, so that an infrared distance measuring sensor mounted on the bottom surface of the inner frame is kept stable in a dynamic state. Meanwhile, a cleaning assembly driven by a front-end rotating wheel is arranged at the front end of the bottom plate, two rows of cleaning brushes rotating reversely are driven through gear transmission, and sundries on the road surface are automatically swept away from a measuring path when the equipment moves. According to the utility model, the dynamic stability of the measuring basis and the synchronous optimization of the measuring environment are realized, and the accuracy and the reliability of the pavement flatness detection on the construction site are obviously improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a road surface measuring instrument, in particular to a road surface measuring instrument for highway construction belongs to road surface detection technical field. BACKGROUND

[0002] In the field of highway construction and maintenance, road surface flatness is a key indicator to measure engineering quality, and its accurate detection is crucial. Currently, the detection technology of road surface flatness mainly develops in two directions: one is a high-precision and high-efficiency vehicle-mounted automatic detection system, and the other is a portable detection device suitable for construction sites. The former, such as an intelligent detection system based on high-precision three-dimensional laser and binocular vision, can achieve millimeter-level precision data collection at high speed, but the system is complex and costly, mainly suitable for inspection of open roads, and difficult to be directly applied in uncompleted and cluttered construction sites. Therefore, for immediate quality control during construction, a road surface measuring instrument with relatively simple structure and convenient mobile operation is still an indispensable tool.

[0003] In the prior art, such as the road surface measuring instrument for road construction disclosed in CN120867177A, when detecting the flatness of the road surface with the measuring instrument, the light emitted by the laser ranging sensor can be protected when the external light intensity is high or the haze concentration is large, avoiding the influence of the external environment on the measurement accuracy of the laser ranging sensor. At the same time, the dust attached to the surface of the laser ranging sensor can also be cleaned, further improving the accuracy of the measuring instrument. However, it can only clean the lens of the sensor itself, but cannot clean the debris on the scanning path of the sensor before measurement. These debris not only directly affect the ranging result of the non-contact sensor (such as laser, infrared), leading to data jump, but also intensify the bumping of the detection wheel, forming a secondary vibration source interfering with the measurement reference. For example, the flatness detector with automatic leveling function for engineering supervision disclosed in CN222704064U realizes horizontal retention and locking through the installation of a ball and an electric push rod, but this scheme focuses on leveling in static or point measurement, without considering vibration isolation in continuous movement conditions, and completely lacks road cleaning function.

[0004] In summary, the existing leveling mechanism lacks stability in dynamic mobile detection situations. Most leveling designs (such as ball hinge structure) can adapt to static inclination, but lack effective isolation and damping of continuous high-frequency vibration during vehicle movement, resulting in drift or jitter of the measurement reference in dynamic conditions, and low signal-to-noise ratio of measurement data. Secondly, the function is single, and the construction site road surface is often scattered with sand and dust, lacking active improvement of the measurement environment. UTILITY MODEL CONTENT

[0005] The utility model discloses a road surface measuring instrument for highway construction which solves the problem of vibration interference of the vehicle body and the influence of road surface impurities on the precision in dynamic measurement.

[0006] The utility model discloses a road surface measuring instrument for highway construction which solves the problem of vibration interference of the vehicle body and the influence of road surface impurities on the precision in dynamic measurement.

[0007] The utility model discloses a road surface measuring instrument for highway construction which solves the problem of vibration interference of the vehicle body and the influence of road surface impurities on the precision in dynamic measurement.

[0008] The utility model discloses a road surface measuring instrument for highway construction which solves the problem of vibration interference of the vehicle body and the influence of road surface impurities on the precision in dynamic measurement.

[0009] As a further scheme of the utility model: the tail end upper plate surface of the bottom plate moving direction is connected with the push handrail, the tail end lower plate surface of the bottom plate moving direction is connected with the tail end rotating wheel, and the tail end rotating wheel and the front end rotating wheel are in the same plane.

[0010] As a further scheme of the utility model: the opening upper end of the cover barrel is connected with the barrel cover in the screw thread, the ball socket is fixedly connected in the middle part of the barrel cover, and the opening lower end edge of the cover barrel is connected with a plurality of shielding sheets.

[0011] As a further scheme of the utility model: the upper end of the swing connecting rod is fixedly connected with the ball head, the ball head is movably clamped in the ball socket, four linear dampers are evenly distributed on the outer periphery of the swing connecting rod, and universal fish eye bearings are connected between the upper end of the linear damper and the ball socket and between the lower end of the linear damper and the U-shaped outer frame.

[0012] As a further scheme of the utility model: the cross shaft assembly includes a first shaft rod, a second shaft rod and a cross shaft sleeve, the first shaft rod and the second shaft rod are distributed in the cross shape in the up-down staggered mode, the rod bodies of the first shaft rod and the second shaft rod are fixedly sleeved in the cross shaft sleeve, first bearing seats are connected between the two ends of the first shaft rod and the two side frame bodies of the U-shaped outer frame, and second bearing seats are connected between the two ends of the second shaft rod and the two side frame bodies of the U-shaped inner frame.

[0013] As a further scheme of the utility model: the middle part of the frame body of the U-shaped inner frame is provided with a through hole, a boom is movably arranged in the through hole, the upper end of the boom is fixedly connected with a cross shaft sleeve, and the lower end of the boom is fixedly connected with a gravity pendulum.

[0014] As a further scheme of the utility model: the rod body of the driving connecting rod is coaxially fixedly connected with two driving gears, one end of each of the two transmission connecting rods is coaxially fixedly connected with a driven gear, the driven gears and the driving gears are one-to-one correspondingly arranged and are in meshing connection, the rod body of each of the two cleaning rotating rods is coaxially fixedly connected with a driven linkage gear, the other end of each of the two transmission connecting rods is coaxially fixedly connected with a driving gear, the driving gears and the driven linkage gears are one-to-one correspondingly arranged and are in meshing connection.

[0015] As a further scheme of the utility model: the top end of the cleaning rotating rod is coaxially sleeved with a rotating rod bearing, the inner ring of the rotating rod bearing is fixedly connected with the rod body of the cleaning rotating rod, and the outer ring of the rotating rod bearing is fixedly connected to the lower plate surface of the bottom plate.

[0016] As a further scheme of the utility model: the rod body of the transmission connecting rod is coaxially sleeved with a positioning bearing, the inner ring of the positioning bearing is fixedly connected with the rod body of the transmission connecting rod, and the outer ring of the positioning bearing is fixedly connected with a bearing connecting rod, and the bearing connecting rod is fixedly connected to the lower plate surface of the bottom plate in a vertical manner.

[0017] The utility model discloses the beneficial effect is:

[0018] 1, the utility model discloses a bottom plate and inertia reference surveying and mapping assembly are provided with, and the plate body of bottom plate is connected with the vertically arranged outer cover cylinder, and the inertia reference surveying and mapping assembly is arranged in the outer cover cylinder in a suspended manner, and the lower plate surface of the front end of the moving direction of bottom plate is connected with the cleaning assembly, and the rotation of cleaning assembly is driven by the moving of bottom plate, and the inertia reference surveying and mapping assembly is arranged in the outer cover cylinder in a suspended manner, ensures that the inertia reference surveying and mapping assembly and the cylinder wall of outer cover cylinder and bottom plate are not rigidly connected, so that the vibration, impact and tilting movement from the road surface, through bottom plate and outer cover cylinder, will not be directly rigidly conducted to the inertia reference surveying and mapping assembly, and the outer cover cylinder can insulate ambient light, prevent the strong sunlight or other stray light source in the environment from possibly interfering with the measurement accuracy of inertia reference surveying and mapping assembly, in addition, the lower plate surface of the front end of the moving direction of bottom plate is connected with the cleaning assembly can carry out the cleaning operation before the inertia reference surveying and mapping assembly carries out the measurement, removes the loose particulate matter that possibly adheres on the road surface and interferes with the distance measuring light path, guarantees the measurement accuracy.

[0019] 2,The utility model discloses a inertia reference surveying and mapping subassembly that is provided with a ball socket, a U-shaped outer frame, a U-shaped inner frame and an infrared distance measuring sensor, a swing connecting rod and a linear damper are connected between the ball socket and the U-shaped outer frame, a cross shaft assembly is connected between the U-shaped outer frame and the U-shaped inner frame, the infrared distance measuring sensor is connected to the bottom surface of the U-shaped inner frame, the ball socket is a fixed suspension point, is connected with the U-shaped outer frame through the swing connecting rod, forms a suspension that can swing in multiple directions, cooperates with the linear damper to quickly consume the swing kinetic energy of the U-shaped outer frame due to external force, makes it stop shaking quickly, isolates most of the low frequency, large amplitude inclination and vibration of the bottom plate, makes the movement of the U-shaped outer frame become gentle, secondly, the cross shaft assembly is connected between the U-shaped outer frame and the U-shaped inner frame, constitutes a universal joint mechanism, allows the U-shaped inner frame to obtain two orthogonal rotation degrees of freedom relative to the U-shaped outer frame, even if still remaining some slow angle change, these changes can be further isolated through the rotation of the cross shaft assembly, prevent it from being directly transmitted to the U-shaped inner frame, make the infrared distance measuring sensor keep relatively stable, ensure that the pointing stability of the infrared distance measuring sensor is stable, and the change of its measurement value mainly reflects the vertical distance change of its own to the real fluctuation of the road surface, not the artifact of vehicle movement, thereby the accuracy of road flatness measurement data is greatly improved.

[0020] 3,The utility model discloses a cleaning assembly that is provided with two cleaning rotating rods, the bottom end of the cleaning rotating rod is connected with a rotating disc, the lower disc body of the rotating disc is connected with a cleaning brush, the lower plate surface of the bottom plate is connected with two front end rotating wheels, coaxial connection has drive connecting rod between the two front end rotating wheels, drive connecting rod and every cleaning rotating rod all are connected with transmission connecting rod, and two transmission connecting rods are reverse rotation, when the front end rotating wheel rolls on the ground because the surveying and mapping instrument is pushed, the rotary motion is transmitted to the drive connecting rod, and the rotation speed of the drive connecting rod is proportional to the rotation speed of the front end rotating wheel, and two rows of reverse rotary cleaning brushes can sweep the sand, dust and other sundries encountered on the road surface from the centerline area of equipment travel to the left and right sides respectively, avoid the sundries to be pushed straight to the front, be accumulated in front of the brush even be rolled back to the vehicle bottom and interfere with the measurement again. ACCURACY

[0021] Figure 1 It is overall structure schematic diagram of the utility model;

[0022] Figure 2 It is bottom plate and cover cylinder connecting structure schematic diagram of the utility model;

[0023] Figure 3 It is inertia reference surveying and mapping subassembly structure schematic diagram in cover cylinder inside of the utility model;

[0024] Figure 4 It is ball socket and swing connecting rod connecting structure schematic diagram of the utility model;

[0025] Figure 5 It is linear damper connecting structure schematic view of the utility model;

[0026] Figure 6 It is cross axle assembly structure schematic view of the utility model;

[0027] Figure 7 It is U-shaped outer frame and U-shaped inner frame connecting structure schematic view of the utility model;

[0028] Figure 8 It is U-shaped inner frame and infrared distance measuring sensor connecting structure schematic view of the utility model;

[0029] Figure 9 It is cleaning assembly structure schematic view of the utility model.

[0030] In the drawing: 1, bottom plate;11, push handrail;12, tail end rotating wheel;13, front end rotating wheel;2, outer cover cylinder;21, cylinder cover;22, shielding sheet;3, inertia reference surveying and mapping assembly;31, ball socket;32, swing connecting rod;33, U-shaped outer frame;34, first shaft rod;35, second shaft rod;36, U-shaped inner frame;37, infrared distance measuring sensor;38, ball head;39, linear damper;310, universal fish eye bearing;311, cross axle sleeve;312, first bearing seat;313, second bearing seat;314, suspender;315, gravity pendulum;316, perforation;4, cleaning assembly;41, cleaning rotating rod;42, rotating disc;43, cleaning brush;44, rotating rod bearing;45, driving connecting rod;46, driving gear;47, driven driving gear;48, transmission connecting rod;49, driving gear;410, driven linkage gear;411, positioning bearing;412, bearing connecting rod. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0032] Embodiment one

[0033] As Figures 1 to 9As shown, a road surface leveling instrument for road construction, comprising a base plate 1 and an inertial reference leveling assembly 3, the plate body of the base plate 1 is connected with a vertically arranged outer cover cylinder 2, the inertial reference leveling assembly 3 is suspended in the outer cover cylinder 2, the front end of the base plate 1 is connected with a cleaning assembly 4, the rotation of the cleaning assembly 4 is driven by the movement of the base plate 1, the inertial reference leveling assembly 3 is suspended in the outer cover cylinder 2, ensuring that the inertial reference leveling assembly 3 is not rigidly connected with the cylinder wall of the outer cover cylinder 2 and the base plate 1, so that the vibration, impact and tilting movement from the road surface transmitted through the base plate 1 and the outer cover cylinder 2 will not be directly and rigidly conducted to the inertial reference leveling assembly 3, and the outer cover cylinder 2 can isolate ambient light, preventing strong sunlight or other stray light sources in the environment from interfering with the measurement accuracy of the inertial reference leveling assembly 3. In addition, the cleaning assembly 4 connected to the front end of the base plate 1 can perform cleaning work before the inertial reference leveling assembly 3 measures, removing loose particles that may be attached to the road surface to interfere with the ranging light path, ensuring measurement accuracy.

[0034] The inertial reference leveling assembly 3 includes a ball socket 31, a U-shaped outer frame 33, a U-shaped inner frame 36, and an infrared ranging sensor 37. The ball socket 31 is connected with the U-shaped outer frame 33 through a swing link 32 and a linear damper 39. The U-shaped outer frame 33 is connected with the U-shaped inner frame 36 through a cross shaft assembly. The infrared ranging sensor 37 is connected to the bottom surface of the U-shaped inner frame 36. The ball socket 31 is a fixed suspension point, connected with the U-shaped outer frame 33 through the swing link 32, forming a multi-directional swing suspension. The linear damper 39 can quickly consume the swing kinetic energy of the U-shaped outer frame 33 caused by external force, so that it can quickly stop shaking and isolate most of the low-frequency and large-amplitude tilting and vibration of the base plate 1, making the movement of the U-shaped outer frame 33 smooth. Secondly, the cross shaft assembly is connected between the U-shaped outer frame 33 and the U-shaped inner frame 36, forming a universal joint mechanism, allowing the U-shaped inner frame 36 to have two orthogonal rotation degrees of freedom relative to the U-shaped outer frame 33. Even if there is still some slow angle change, these changes can be further isolated through the rotation of the cross shaft assembly, preventing it from being directly transmitted to the U-shaped inner frame 36, so that the infrared ranging sensor 37 remains relatively stable, ensuring the stability of the infrared ranging light beam emitted by the infrared ranging sensor 37, and the change of its measurement value mainly reflects the vertical distance change of its own to the real ups and downs of the road surface, rather than the artifacts of vehicle motion, thereby greatly improving the accuracy of road surface flatness measurement data.

[0035] The cleaning assembly 4 comprises two cleaning rotating rods 41, the bottom ends of the cleaning rotating rods 41 are connected with rotating discs 42, the lower disc bodies of the rotating discs 42 are connected with cleaning brushes 43, the lower plate surface of the bottom plate 1 is connected with two front end rotating wheels 13, the two front end rotating wheels 13 are coaxially connected with a driving connecting rod 45, the driving connecting rod 45 is connected with each cleaning rotating rod 41 through a transmission connecting rod 48, and the two transmission connecting rods 48 rotate in opposite directions, when the front end rotating wheels 13 roll on the ground due to the leveling instrument being pushed, the rotating motion is transmitted to the driving connecting rod 45, the rotating speed of the driving connecting rod 45 is proportional to the rotating speed of the front end rotating wheels 13, and the two rows of cleaning brushes 43 rotating in opposite directions can sweep the sand, dust and other sundries encountered on the road away from the middle line area of the equipment running to the left and right sides, so that the sundries are not pushed straight forward, accumulated in front of the brushes or even rolled back to the bottom of the vehicle to interfere with the measurement again. It should be noted that one of the front end rotating wheels 13 can be coaxially connected with a driving motor, that is, the front end rotating wheel 13 can be driven by an electric drive to ensure that the leveling instrument can be moved more labor-savingly and has enough driving force to drive the transmission of each part, thereby enabling the cleaning assembly 4 to work normally.

[0036] Embodiment two

[0037] Based on the improvement of embodiment one:

[0038] As shown in Figure 1 and Figure 2 , the tail end upper plate surface of the bottom plate 1 in the moving direction is connected with a pushing handrail 11, the tail end lower plate surface of the bottom plate 1 in the moving direction is connected with a tail end rotating wheel 12, and the tail end rotating wheel 12 is in the same plane as the front end rotating wheel 13. The pushing handrail 11 provided at the tail end of the bottom plate 1 provides a labor-saving and controllable operation point; the tail end rotating wheel 12 coaxial with the front end rotating wheel 13 forms a stable support structure, ensuring the basic level of the bottom plate 1 and improving the stability of movement.

[0039] Further, the open upper end of the outer cover cylinder 2 is threadedly connected with a cylinder cover 21, the ball socket 31 is fixedly connected to the middle part of the cylinder cover 21, and a plurality of shielding pieces 22 are connected to the open lower end edge of the outer cover cylinder 2. By threadedly connecting the cylinder cover 21 to the open upper end, convenient sealing and opening are achieved, which facilitates the installation and maintenance of the internal components. In addition, a plurality of shielding pieces 22 are arranged at the open lower end edge of the outer cover cylinder 2. These flexible sheet structures can effectively block the mud and gravel splashed from the road into the cylinder without affecting the measurement of the sensor, providing all-round physical protection for the inertial reference leveling assembly 3, and ensuring its long-term reliable operation in harsh construction environments.

[0040] As shown in Figure 1 , Figures 3 to 8As shown, the upper end of the swing link 32 is fixedly connected with a ball head 38, the ball head 38 is movably clamped in the ball socket 31, four linear dampers 39 are uniformly distributed on the outer periphery of the swing link 32, universal fish eye bearings 310 are connected between the upper end of the linear damper 39 and the ball socket 31 and between the lower end of the linear damper 39 and the U-shaped outer frame 33, the ball head 38 of the upper end of the swing link 32 is movably clamped in the ball socket 31 to form a spherical hinge, allowing the U-shaped outer frame 33 to swing in multiple directions, thereby absorbing the interference of the inclination in all directions from the bottom plate 1; the four uniformly distributed linear dampers 39 are connected with the ball socket 31 and the U-shaped outer frame 33 through the universal fish eye bearings 310 to form a symmetrical damping structure; high-efficiency and uniform damping force can be generated on the swing of the U-shaped outer frame 33 in any direction, rapidly dissipating its kinetic energy, suppressing resonance and sustained oscillation, and achieving effective filtering and rapid stabilization of low-frequency large-amplitude vibration, thereby providing a preliminary purified motion environment for internal components.

[0041] Further, the cross shaft assembly includes a first shaft 34, a second shaft 35 and a cross shaft sleeve 311, the first shaft 34 and the second shaft 35 are distributed in a cross shape with an up-down offset, the shaft bodies of the first shaft 34 and the second shaft 35 are fixedly sleeved in the cross shaft sleeve 311, first bearing seats 312 are connected between the two ends of the first shaft 34 and the two side frame bodies of the U-shaped outer frame 33, second bearing seats 313 are connected between the two ends of the second shaft 35 and the two side frame bodies of the U-shaped inner frame 36, the cross shaft assembly is composed of the first shaft 34 and the second shaft 35 which are fixed in the cross shaft sleeve 311 and perpendicular to each other, and the two axes intersect accurately; the two ends of the first shaft 34 are connected with the U-shaped outer frame 33 through the first bearing seats 312 to form a first rotational pair rotating around the X-axis; the two ends of the second shaft 35 are connected with the U-shaped inner frame 36 through the second bearing seats 313 to form a second rotational pair rotating around the Y-axis; the two orthogonal rotational pairs enable the U-shaped inner frame 36 to obtain two independent rotational degrees of freedom, thereby realizing further decoupling of the motion of the U-shaped outer frame 33 and isolating residual angular interference outside.

[0042] Further, a through hole 316 is formed in the middle part of the frame body of the U-shaped inner frame 36, a suspender 314 is movably arranged in the through hole 316, the upper end of the suspender 314 is fixedly connected with the cross shaft sleeve 311, and a gravity pendulum 315 is fixedly connected to the lower end of the suspender 314; by virtue of the characteristic that the gravity pendulum 315 always points to the center of the earth, the suspender 314 applies a continuous gravity restoring torque to the U-shaped inner frame 36, so that the U-shaped inner frame 36 automatically tends to and maintains a horizontal posture; at the same time, the large inertia of the pendulum plays a mechanical low-pass filtering role, effectively suppressing high-frequency disturbance; the infrared distance measuring sensor 37 is provided with a dynamic horizontal reference surface with self-correcting and anti-interference capability.

[0043] As shown in FIG. 1, the U-shaped outer frame 33 is connected with the U-shaped inner frame 36 through a cross shaft assembly, and the U-shaped inner frame 36 is connected with the bottom plate 1 through a suspension assembly. Figure 1 and Figure 9As shown, the rod body of the driving connecting rod 45 is coaxially fixedly connected with two driving gears 46, one end of each of the two transmission connecting rods 48 is coaxially fixedly connected with a driven gear 47, the driven gears 47 are arranged in one-to-one correspondence with the driving gears 46 and are in meshing connection, the rod body of each of the two cleaning rotating rods 41 is coaxially fixedly connected with a driven gear 410, the other end of each of the two transmission connecting rods 48 is coaxially fixedly connected with a driving gear 49, the driving gears 49 are arranged in one-to-one correspondence and are in meshing connection with the driven gears 410, and it needs to be noted that the driving gears 46, the driven gears 47, the driving gears 49 and the driven gears 410 are all conical gears, the two driving gears 46 are in meshing connection with the driven gears 47 at one end of the two transmission connecting rods 48, to complete the first-stage ninety-degree reversing transmission and make the two transmission connecting rods 48 rotate reversely, and the driving gears 49 at the other end of the two transmission connecting rods 48 are in meshing connection with the driven gears 410 on the cleaning rotating rods 41, to complete the second-stage ninety-degree reversing transmission, finally to convert the rolling of the front rotating wheel 13 into the vertical rotation of the cleaning rotating rods 41 and ensure the reverse rotating movement of the cleaning brushes 43 on both sides, so as to realize the best cleaning effect of sweeping the dirt from the middle to both sides.

[0044] Further, the top end of the cleaning rotating rod 41 is coaxially sleeved with a rotating rod bearing 44, the inner ring of the rotating rod bearing 44 is fixedly connected with the rod body of the cleaning rotating rod 41, and the outer ring of the rotating rod bearing 44 is fixedly connected to the lower plate surface of the bottom plate 1, by coaxially arranging the rotating rod bearing 44 at the top end of the cleaning rotating rod 41, low-friction and high-precision rotating support is provided for the high-speed rotating cleaning rotating rod 41, to reduce the transmission energy consumption and wear and ensure the stability of the rotating axis of the cleaning rotating rod 41, so as to maintain the constant meshing relationship between the driven gear 410 at the lower end of the cleaning rotating rod 41 and the driving gear 49.

[0045] Further, the rod body of the transmission connecting rod 48 is coaxially sleeved with a positioning bearing 411, the inner ring of the positioning bearing 411 is fixedly connected with the rod body of the transmission connecting rod 48, the outer ring of the positioning bearing 411 is fixedly connected with a bearing connecting rod 412, and the bearing connecting rod 412 is fixedly connected to the lower plate surface of the bottom plate 1 in a vertical manner, the positioning bearing 411 can form positioning of the transmission connecting rod 48, to ensure the spatial position precision of the driven gear 47 and the driving gear 49 installed at both ends of the connecting rod, avoid the problems of poor gear meshing, increased noise or damage caused by shaft deformation or shaft displacement, and guarantee the accurate transmission of power of the multi-stage gear transmission.

[0046] Working principle: when the operator pushes the handrail 11 to make the device forward, the front end rotating wheel 13 and the tail end rotating wheel 12 roll with it. The rotation of the front end rotating wheel 13 is transmitted through the coaxial driving connecting rod 45, the driving gear 46 on the driving connecting rod 45 drives the driven gear 47 to rotate, so that the two transmission connecting rods 48 obtain the power of reverse rotation; the driving gear 49 on the other end of the transmission connecting rod 48 drives the driven linkage gear 410, and finally drives the vertical cleaning rotating rod 41 and the cleaning brush 43 at the bottom of the cleaning brush 43 to rotate, and the two rows of cleaning brushes 43 rotating in opposite directions sweep the dirt on the measuring path to the two sides, creating a clean surface for measurement.

[0047] Meanwhile, when the leveling instrument is moving, the movement causes the vibration and inclination of the bottom plate 1, but these disturbances are effectively isolated by the inertial reference leveling assembly 3, the spherical hinge formed by the ball head 38 and the ball socket 31, and the four linear dampers 39 with universal fisheye bearings 310 work together to allow and inhibit the swing of the U-shaped outer frame 33, achieving first-order vibration reduction. Subsequently, the cross shaft assembly connecting the U-shaped outer frame 33 and the U-shaped inner frame 36 further decouples the motion: the first shaft 34 provides rotational freedom around the X-axis through the first bearing seat 312, and the second shaft 35 provides rotational freedom around the Y-axis through the second bearing seat 313, so that the U-shaped inner frame 36 obtains two orthogonal rotational independences. In order to automatically maintain the horizontal state, the boom 314 passes through the cross shaft sleeve 311 above the perforation 316 of the U-shaped inner frame 36 and connects the gravity pendulum 315 below, and uses the gravitational torque to realize dynamic horizontal correction and high-frequency filtering.

[0048] Finally, the infrared distance measuring sensor 37 installed on the bottom surface of the U-shaped inner frame 36 works in a space that is optically protected by the outer cylinder 2 and the shielding piece 22 and mechanically stable, vertically emits a distance measuring light beam, and based on the distance change measured, can reflect the flatness of the road surface.

[0049] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0050] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes every feature or implementation described herein. The specification can include implicit combinations of explicitly mentioned features and / or implicit combinations of implicitly mentioned features. Such combinations are also expressly included within the scope of the specification and an embodiment.

Claims

1. A road surface leveling device for road construction, comprising a base plate (1) and an inertial reference leveling assembly (3), characterized in that: The plate body of the bottom plate (1) is connected with a vertically arranged outer cover cylinder (2), the inertial reference leveling assembly (3) is arranged in the outer cover cylinder (2) in a suspended manner, the front end lower plate surface of the bottom plate (1) is connected with a cleaning assembly (4), and the rotation of the cleaning assembly (4) is driven by the movement of the bottom plate (1). The inertial reference leveling assembly (3) comprises a ball socket (31), a U-shaped outer frame (33), a U-shaped inner frame (36) and an infrared distance measuring sensor (37), the ball socket (31) and the U-shaped outer frame (33) are connected with a swing connecting rod (32) and a linear damper (39), the U-shaped outer frame (33) and the U-shaped inner frame (36) are connected with a cross shaft assembly, and the infrared distance measuring sensor (37) is connected to the bottom surface of the U-shaped inner frame (36). The cleaning assembly (4) comprises two cleaning rotating rods (41), the bottom end of the cleaning rotating rod (41) is connected with a rotating disc (42), the lower disc body of the rotating disc (42) is connected with a cleaning brush (43), the lower plate surface of the bottom plate (1) is connected with two front end rotating wheels (13), the two front end rotating wheels (13) are coaxially connected with a driving connecting rod (45) between them, the driving connecting rod (45) and each cleaning rotating rod (41) are connected with a transmission connecting rod (48), and the two transmission connecting rods (48) rotate in opposite directions.

2. The road surface leveling device for road construction according to claim 1, characterized by: The tail end upper plate surface of the bottom plate (1) in the moving direction is connected with a pushing handrail (11), the tail end lower plate surface of the bottom plate (1) in the moving direction is connected with a tail end rotating wheel (12), and the tail end rotating wheel (12) and the front end rotating wheel (13) are in the same plane.

3. The road surface leveling device for road construction according to claim 1, characterized by: The open upper end of the outer cover cylinder (2) is threadedly connected with a cylinder cover (21), the ball socket (31) is fixedly connected to the middle part of the cylinder cover (21), and the open lower end edge of the outer cover cylinder (2) is connected with a plurality of shielding pieces (22).

4. The road surface leveling device for road construction according to claim 1, characterized by: The upper end of the swing connecting rod (32) is fixedly connected with a ball head (38), the ball head (38) is movably clamped in the ball socket (31), and the linear damper (39) is arranged in a uniform distribution manner around the outer periphery of the swing connecting rod (32). Four, the upper end of the linear damper (39) and the ball socket (31) and the lower end of the linear damper (39) and the U-shaped outer frame (33) are connected with a universal fish eye bearing (310).

5. The road planer of claim 4, wherein: The cross shaft assembly comprises a first shaft rod (34), a second shaft rod (35) and a cross shaft sleeve (311), the first shaft rod (34) and the second shaft rod (35) are distributed in a cross shape in an upper-lower staggered manner, the shaft bodies of the first shaft rod (34) and the second shaft rod (35) are fixedly sleeved in the cross shaft sleeve (311), the two ends of the first shaft rod (34) and the two side frame bodies of the U-shaped outer frame (33) are connected with a first bearing seat (312), and the two ends of the second shaft rod (35) and the two side frame bodies of the U-shaped inner frame (36) are connected with a second bearing seat (313).

6. The road planer of claim 5, wherein: The U-shaped inner frame (36) is provided with a through hole (316) in the middle of the frame body, a suspender (314) is movably arranged in the through hole (316), the upper end of the suspender (314) is fixedly connected with a cross shaft sleeve (311), and the lower end of the suspender (314) is fixedly connected with a gravity pendulum (315).

7. The road planer of claim 1, wherein: The rod body of the driving connecting rod (45) is coaxially fixedly connected with two driving gears (46), one end of each of the two transmission connecting rods (48) is coaxially fixedly connected with a driven gear (47), the driven gears (47) are arranged in one-to-one correspondence with the driving gears (46) and are in meshing connection, the rod body of each of the two cleaning rotating rods (41) is coaxially fixedly connected with a driven linkage gear (410), the other end of each of the two transmission connecting rods (48) is coaxially fixedly connected with a driving gear (49), the driving gears (49) are arranged in one-to-one correspondence and are in meshing connection with the driven linkage gears (410).

8. The road planer of claim 7, wherein: The top end of the cleaning rotating rod (41) is coaxially sleeved with a rotating rod bearing (44), the inner ring of the rotating rod bearing (44) is fixedly connected with the rod body of the cleaning rotating rod (41), and the outer ring of the rotating rod bearing (44) is fixedly connected to the lower plate surface of the bottom plate (1).

9. The road planer of claim 1, wherein: The rod body of the transmission connecting rod (48) is coaxially sleeved with a positioning bearing (411), the inner ring of the positioning bearing (411) is fixedly connected with the rod body of the transmission connecting rod (48), the outer ring of the positioning bearing (411) is fixedly connected with a bearing connecting rod (412), and the bearing connecting rod (412) is fixedly connected to the lower plate surface of the bottom plate (1) in a vertical manner.

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