Steering walking device for road marking machine and road marking machine

Abstract

The invention discloses a steering walking device for a road marking machine and the road marking machine. The steering walking device comprises a chassis; the frame is connected with the chassis; the steering system is connected with the frame; the walking system is arranged at the bottom of the chassis bottom, the walking system is electrically connected with the steering system, and the steering system controls the driving direction of the road marking machine through the walking system; the controller is connected with the frame, the controller is electrically connected with the steering system and the walking system, and the steering system sends a steering instruction to the walking system through the controller. According to the steering walking device for the road marking machine and the road marking machine, the steering precision and stability of the road marking machine can be effectively improved, and the shock absorption capacity is good.

Description

Technical Field

[0001] The present invention relates to the technical field of the steering and traveling of road marking machines, and more particularly to a steering and traveling device for a road marking machine and a road marking machine. Background Art

[0002] With the rapid development of traffic construction, the road mileage is increasing continuously, and the requirements for the construction efficiency and quality of road markings are also increasing day by day. The application scenarios of road marking machines are no longer limited to traditional roads, parking lots, etc., but also extended to various complex road conditions such as airport runways, highway ramps, and urban expressways. Different application scenarios have different requirements for the steering performance of road marking machines. For example, in mountain roads with many curves or narrow parking lot passages, the marking machine needs to be able to achieve more flexible and accurate steering.

[0003] In the related art, to meet these requirements, there are usually two steering methods for road marking machines: mechanical steering and hydraulic steering. Some small road marking machines or those with low requirements for steering accuracy use mechanical steering, which relies on manual operation and transmits force through mechanical components to achieve steering; while some large or heavy road marking machines use a hydraulic steering system, which provides pressure oil through a hydraulic pump and controls the actions of hydraulic cylinders or hydraulic motors through control valves to achieve the steering of the steering wheels, with characteristics such as large steering force and stable operation, and is suitable for marking operations under heavy loads and complex road conditions.

[0004] However, the steering accuracy of road marking machines in the prior art is relatively low, and the stability and shock absorption ability are poor. Summary of the Invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. For this reason, one object of the present invention is to propose a... The steering and traveling device can effectively improve the steering accuracy and stability of the road marking machine, and has good shock absorption ability.

[0006] Another object of the present invention is to propose a road marking machine.

[0007] A steering and traveling device for a road marking machine according to the present invention includes: A chassis; A frame, the frame being connected to the chassis; A steering system, the steering system being connected to the frame; A traveling system, the traveling system being arranged at the bottom of the chassis, the traveling system being electrically connected to the steering system, and the steering system controlling the traveling direction of the road marking machine through the traveling system; A controller is connected to the vehicle frame, and the controller is electrically connected to the steering system and the traveling system respectively, and the steering system sends a steering instruction to the traveling system through the controller.

[0008] According to the steering traveling device provided by the embodiment of the present invention, by setting up a chassis responsible for carrying various components of the road marking machine, a stable support can be provided for the road marking machine, ensuring the smooth operation of the road marking machine under different road conditions; by setting up a frame, a stable support can be provided for the steering traveling device, thereby ensuring the stability and safety of the steering traveling device during operation; by setting up a steering system, the steering system can accurately convert the rotation of the steering wheel into the steering of the road marking machine, so that the road marking machine can quickly and accurately adjust the driving direction of the road marking machine according to the user's intention, realize flexible steering, and thus complete high-quality marking operations in complex road environments; by setting up a traveling system, the steering system can accurately convert the rotation of the steering wheel into the steering of the road marking machine, realize different degrees of steering according to different road conditions and marking requirements, so that the road marking machine can travel smoothly, reducing the impact of poor road conditions on marking quality and operating efficiency; by setting up a controller, the steering system and the traveling system can be uniformly coordinated and controlled, significantly improving the operating efficiency of the steering traveling device.

[0009] In some examples of the present invention, the steering system includes: Steering wheel assembly; a universal joint shaft, one end of which is connected to the steering wheel assembly; A steering limiter, the other end of the universal shaft being connected to the transmission shaft of the steering limiter, the steering limiter being used to limit the rotation angle of the universal shaft; A steering motor, wherein the rotating shaft of the steering motor is transmission-connected to the other end of the transmission shaft, the steering motor is electrically connected to the controller, and the steering wheel assembly sends a steering instruction to the controller through the steering motor to control the driving direction of the road marking machine.

[0010] In some examples of the present invention, the steering motor has an angle sensor, which is arranged corresponding to the other end of the rotating shaft away from the transmission shaft. The angle sensor is electrically connected to the controller so that the angle sensor measures and sends the rotation angle of the steering wheel assembly to the controller.

[0011] In some examples of the present invention, the walking system includes: A steering mechanism, the steering mechanism being arranged at one end of the chassis and being used to control the driving direction of the road marking machine; A driving mechanism, which is arranged at the other end of the chassis and is used to drive the road marking machine to move.

[0012] In some examples of the present invention, the steering mechanism includes: A slewing bearing group, which is movably connected to the chassis; A steering wheel group, which is arranged at the bottom of the chassis and is connected to the slewing bearing group; A steering wheel motor, which is connected to the slewing bearing group, electrically connected to the steering system, and the steering system drives the steering wheel group to rotate around the slewing bearing group through the steering wheel motor so that the steering wheel group steers.

[0013] In some examples of the present invention, the slewing bearing group includes: A driven wheel, one end of which is rotatably connected to the chassis and is in transmission connection with the steering wheel motor; A slewing bearing, the outer ring of which is fixedly connected to the chassis and is in transmission connection with the steering wheel motor; A support assembly, one end of which is fixedly connected to the inner ring of the slewing bearing, and the other end of which is fixedly connected to the support shaft of the steering wheel group.

[0014] In some examples of the present invention, the driving mechanism includes: A driving wheel, which is connected to the chassis; A driving motor, which is fixedly connected to the chassis and is in transmission connection with the driving wheel, and the driving wheel is used to drive the driving wheel to rotate.

[0015] In some examples of the present invention, the support assembly includes: A support plate, one side of which is fixedly connected to the inner ring of the slewing bearing, and one end of which is fixedly connected to the steering wheel motor; A deflection mechanism, which is fixedly connected to the other side of the support plate, is arranged in the middle of the steering wheel group, and is used to adjust the inclination angle of the steering wheel group.

[0016] In some examples of the present invention, the deflection mechanism includes: A baffle, which includes a left baffle and a right baffle arranged symmetrically, one end of which is fixedly connected to the other side of the support plate, and the baffle is arranged in the middle of the steering wheel group; Fixing plate, the fixing plate is arranged between the left baffle and the right baffle, one end of the fixing plate is fixedly connected to the other side of the support plate, and the fixing plate is used for connecting the left baffle and the right baffle; Rotating shaft, the rotating shaft penetrates through the fixing plate along the width direction of the steering mechanism, and the rotating shaft is used for adjusting the inclination angles of the baffle and the fixing plate.

[0017] A road marking machine according to the present invention includes the above-mentioned steering and traveling device for a road marking machine.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. Description of the Drawings

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a schematic structural diagram of a steering and traveling device for a road marking machine provided according to the present invention; Figure 2 It is a schematic structural diagram of a steering system provided according to the present invention; Figure 3 It is a schematic structural diagram of a steering limiter provided according to the present invention; Figure 4 It is a schematic structural diagram of the steering limiter from another angle provided according to the present invention; Figure 5 It is a top view of a steering and traveling device for a road marking machine provided according to the present invention; Figure 6 It is a schematic structural diagram of a steering mechanism provided according to the present invention; Figure 7 It is a top view of a steering mechanism provided according to the present invention.

[0021] Description of the Reference Numerals: 1 - Road marking machine; 11 - Steering and traveling device; 100 - Steering limiter; 110 - Housing; 120 - Transmission shaft; 130 - Limit shaft; 131 - Limit key; 140 - Limiting part; 141 - Through hole; 1411 - Limiting protrusion; 150 - Heat dissipation rib; 200 - Steering wheel assembly; 210 - Steering wheel; 220 - Connecting shaft; 230 - Bushing; 231 - Connecting plate; 300 - Cardan shaft; 400 - Steering motor; 410 - Angle sensor; 500 - Universal joint; 600 - Adjusting support; 700 - Steering mechanism; 710 - Slewing support group; 711 - Slewing bearing; 7111 - Outer ring; 7112 - Inner ring; 712 - Support assembly; 7121 - Support plate; 7122 - Deflection mechanism; 71221 - Baffle; 71222 - Fixed plate; 71223 - Rotating shaft; 720 - Steering wheel group; 721 - Left steering wheel; 722 - Right steering wheel; 723 - Support shaft; 730 - Rudder wheel motor; 731 - Driving wheel; 800 - Driving mechanism; 810 - Driving wheel; 820 - Driving motor; 10 - Steering system; 20 - Chassis; 30 - Frame; 40 - Traveling system. Detailed implementation mode

[0022] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0023] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the drawings, and are 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 thus should not be construed as a limitation of the present invention. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more.

[0024] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" 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 a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. 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 situations.

[0025] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention.

[0026] Figure 1 FIG. is a schematic structural diagram of a steering and traveling device for a road marking machine according to the present invention; [[ID=⑧]] Figure 2 FIG. is a schematic structural diagram of a steering system according to the present invention; Figure 3 FIG. is a schematic structural diagram of a steering limiter according to the present invention; Figure 4 FIG. is a schematic structural diagram of the steering limiter from another angle according to the present invention; Figure 5 FIG. is a top view of a steering and traveling device for a road marking machine according to the present invention; Figure 6 FIG. is a schematic structural diagram of a steering mechanism according to the present invention; Figure 7 FIG. is a top view of a steering mechanism according to the present invention.

[0027] Next, refer to Figures 1 - 7 Describe a steering and traveling device 11 for a road marking machine 1 according to an embodiment of the present invention, including: a chassis 20; a frame 30, the frame 30 is connected to the chassis 20; a steering system 10, the steering system 10 is connected to the frame 30; a traveling system 40, the traveling system 40 is disposed at the bottom of the chassis 20, the traveling system 40 is electrically connected to the steering system 10, and the steering system 10 controls the traveling direction of the road marking machine 1 through the traveling system 40; a controller (not shown in the figure), the controller is connected to the frame 30, the controller is electrically connected to the steering system 10 and the traveling system 40 respectively, and the steering system 10 sends a steering command to the traveling system 40 through the controller.

[0028] Specifically, the chassis 20 can be configured as a box-shaped frame structure, and the construction material of the chassis 20 can be a metal material, such as: structural steel, which has strong impact resistance, thereby greatly improving the load-bearing performance of the chassis 20. The chassis 20 is responsible for carrying the components of the road marking machine 1 and can provide a stable support for the road marking machine 1 to ensure the smooth operation of the road marking machine 1 under different road conditions.

[0029] The vehicle frame 30 can be constructed as a truss space structure. The vehicle frame 30 can be fixedly connected to the chassis 20 by means of bolt connection, which facilitates the chassis 20 to provide stable support for the vehicle frame 30, thereby improving the stability and safety of the road marking machine 1. The vehicle frame 30 can provide stable support for the steering and traveling device 11, thereby ensuring the stability and safety of the steering and traveling device 11 during operation.

[0030] The steering system 10 can be vertically fixed to the front part of the vehicle frame 30 by means of threaded connection. When the user turns the steering wheel 210, the steering system 10 can accurately convert this action into the steering of the road marking machine 1, enabling the road marking machine 1 to quickly and accurately adjust the traveling direction of the road marking machine 1 according to the user's intention, realizing flexible steering, and thus completing high-quality marking operations in a complex road environment. In the face of some special road conditions, such as local unevenness, undulation or potholes on the road, the steering system 10 can help the road marking machine 1 better adapt to the road condition changes. By appropriately adjusting the traveling direction, the road marking machine 1 can travel smoothly, reducing the impact of poor road conditions on the marking quality and operation efficiency.

[0031] The traveling system 40 can be installed at the bottom of the chassis 20 by means of threaded connection. The traveling system 40 can realize the steering and movement of the road marking machine 1. The traveling system 40 can be electrically connected to the steering system 10 by means of wired connection or wireless connection. With such a setting, the steering system 10 can send a steering instruction to the traveling system 40, and the traveling system 40 makes corresponding steering actions according to the steering instruction, thereby controlling the traveling direction of the road marking machine 1, and further enhancing the flexibility of the road marking machine 1 during operation.

[0032] The controller can be fixedly connected to the vehicle frame 30 by means of threaded connection, ensuring the stability of the controller during the operation of the road marking machine 1. The controller can also be electrically connected to the steering system 10 and the traveling system 40 respectively by means of wired connection or wireless connection. With such a setting, the steering system 10 can transmit the user's steering instruction to the controller, and then the controller transmits the steering instruction to the traveling system 40, thereby enabling unified coordination and control of the steering system 10 and the traveling system 40, and significantly improving the operation efficiency of the steering and traveling device 11.

[0033] According to the steering and traveling device 11 provided by the embodiments of the present invention, by arranging the chassis 20 to be responsible for carrying each component of the road marking machine 1, a stable support can be provided for the road marking machine 1, ensuring the smooth operation of the road marking machine 1 under different road conditions; by arranging the frame 30, a stable support can be provided for the steering and traveling device 11, thereby ensuring the stability and safety of the steering and traveling device 11 during the operation process; by arranging the steering system 10, the steering system 10 can accurately convert the rotation of the steering wheel 210 into the steering of the road marking machine 1, and according to different road conditions and marking requirements, different degrees of steering can be achieved, enabling the road marking machine 1 to drive smoothly and reducing the impact on the marking quality and operation efficiency due to poor road conditions; by arranging the traveling system 40, the steering system 10 can send a steering command to the traveling system 40, thereby controlling the traveling direction of the road marking machine 1, and further enhancing the flexibility of the road marking machine 1 during operation; by arranging the controller, the steering system 10 and the traveling system 40 can be coordinated and controlled uniformly, significantly improving the operation efficiency of the steering and traveling device 11.

[0034] Please continue to refer to Figures 1 - 4 As shown, the steering system 10 includes: a steering wheel assembly 200; a universal shaft 300, one end of the universal shaft 300 is connected to the steering wheel assembly 200; a steering limiter 100, the other end of the universal shaft 300 is connected to the transmission shaft 120 of the steering limiter 100, and the steering limiter 100 is used to limit the rotation angle of the universal shaft 300; a steering motor 400, the rotating shaft (not shown in the figure) of the steering motor 400 is in transmission connection with the other end of the transmission shaft 120, the steering motor 400 is electrically connected to the controller, and the steering wheel assembly 200 sends a steering command to the controller through the steering motor 400 to control the traveling direction of the road marking machine 1.

[0035] Specifically, the steering wheel assembly 200 can accurately transmit the user's steering command to the chassis 20 through mechanical transmission, thereby adjusting the deflection angle of the traveling system 40 in real time to control the traveling direction of the road marking machine 1, while reducing the operation load and significantly improving the convenience and safety of driving, ensuring the stable control and dynamic response of the road marking machine 1 under complex road conditions.

[0036] The steering wheel assembly 200 includes: a steering wheel 210; a connecting shaft 220, one end of the connecting shaft 220 is connected to the steering wheel 210, and the other end of the connecting shaft 220 is connected to the universal shaft 300; a shaft sleeve 230, the shaft sleeve 230 is connected to the frame 30 of the road marking machine 1, and the shaft sleeve 230 is coaxially and movably sleeved outside the connecting shaft 220.

[0037] Specifically, the steering wheel 210 can be configured as a circular or slightly flat-bottomed ring shape. The ring structure of the steering wheel 210 can be wrapped with a soft material with a certain friction, such as leather, ultra-fiber or other synthetic materials, so as to improve the comfort and anti-slip performance of the user holding the steering wheel 210. The ring structure of the steering wheel 210 can be configured with three spokes that extend from the outer edge of the steering wheel 210 towards the center and are evenly distributed on the upper, left and right sides of the steering wheel 210, forming three support arms. When the user holds different spokes with both hands, small steering adjustments can be conveniently made, thereby improving the accuracy of the road marking machine 1 during steering.

[0038] The connecting shaft 220 can be configured as a stepped cylindrical structure. One end of the connecting shaft 220 can be fixedly connected to the central position of the steering wheel 210 by means of threaded connection, and the other end of the connecting shaft 220 can be drivingly connected to the universal shaft 300 in the following embodiments through the universal joint 500. With such a setting, the connecting shaft 220 can transmit the steering command of the steering wheel 210 to the connecting shaft 220, and then transmit it to the universal shaft 300 by the connecting shaft 220, so as to realize the transmission of the torque of the steering wheel 210.

[0039] The bushing 230 can be configured as a hollow cylindrical structure inside. The bushing 230 can be movably sleeved outside the connecting shaft 220 by means of coaxial bushing connection. With such a setting, the bushing 230 can provide mechanical protection for the connecting shaft 220, thereby greatly improving the safety of the steering wheel assembly 200. The outside of the bushing 230 can be fixedly connected to the frame 30 of the road marking machine 1 by means of threaded connection or welding. With such a setting, stable support can be provided for the steering wheel assembly 200, thereby improving the stability of the steering system 10.

[0040] A connecting plate 231 is sleeved outside the bushing 230, and the steering wheel assembly 200 is fixedly connected to the frame 30 through the connecting plate 231. The connecting plate 231 can be configured as an irregular disc-shaped structure with through holes 141. The connecting plate 231 can be sleeved outside the bushing 230 by means of coaxial connection, and the connecting plate 231 can also be fixedly connected to the frame 30 of the road marking machine 1 by means of threaded connection or welding. With such a setting, the steering wheel assembly 200 can be fixedly connected to the frame 30 through the connecting plate 231, thereby ensuring the stability and safety of the steering wheel assembly 200 during the driving of the road marking machine 1.

[0041] The universal shaft 300 can be configured as a cylindrical structure. The construction material of the universal shaft 300 can be a metallic material, such as: aluminum alloy. Aluminum alloy has advantages such as high strength, light weight, and corrosion resistance, thereby enhancing the strength of the universal shaft 300. One end of the universal shaft 300 can be drivingly connected to the steering wheel assembly 200 through the universal joint 500 in the following embodiments. With such a setting, the mechanical transmission of the steering wheel assembly 200 can be transmitted to the universal shaft 300 and then transmitted from the universal shaft 300 to the steering limiter 100.

[0042] Universal joints 500 are respectively provided at opposite ends of the universal shaft 300. The universal shaft 300 is drivingly connected to the steering wheel assembly 200 and the steering limiter 100 through the universal joints 500 respectively. The universal joint 500 can be configured as a cross-axis structure, which is convenient for compensating the space and angular deviation between the steering wheel assembly 200 and the steering limiter 100, thereby enabling precise control of the steering of the road marking machine 1. The steering wheel assembly 200 can be connected to one end of the universal shaft 300 through the universal joint 500, so that the steering movement of the steering wheel 210 can be accurately transmitted to the universal shaft 300. The setting of the universal joint 500 can take into account the transmission efficiency and flexibility of the steering system 10, improve the reliability and stability of the steering system 10, and bring a precise and smooth steering experience to the user.

[0043] The steering limiter 100 includes: a housing 110; a drive shaft 120, the drive shaft 120 is movably sleeved with the housing 110 along a first direction, and the drive shaft 120 is drivingly connected to the steering system 10; a limiting shaft 130, the limiting shaft 130 is movably sleeved with the housing 110 along a second direction, and the limiting shaft 130 is in meshing transmission with the drive shaft 120, the first direction is perpendicular to the second direction; a limiting portion 140, the limiting portion 140 is provided on one side of the housing 110 along the second direction, the limiting portion 140 is sleeved with the limiting shaft 130, and the limiting portion 140 is used to limit the rotation angle of the limiting shaft 130.

[0044] Specifically, the housing 110 can be configured as a rectangular structure. The construction material of the housing 110 can be a metallic material, such as: cast iron or stainless steel. Cast iron has good castability, shock absorption, and wear resistance; stainless steel has good corrosion resistance and relatively high hardness, which can effectively improve the overall strength of the housing 110, and further greatly extend the service life of the steering limiter 100. The housing 110 can provide structural support for the steering limiter 100. The housing 110 can form a semi-closed space, thereby protecting the interior of the steering limiter 100 from environmental damage, and further enhancing the stability and safety of the steering limiter 100.

[0045] A plurality of heat dissipation ribs 150 are disposed around the periphery of the housing 110. Specifically, the heat dissipation ribs 150 can be evenly arranged around the periphery of the housing 110 through an integrally formed connection. The heat dissipation ribs 150 can be spaced apart to create convection airflow, thereby increasing the heat dissipation area of the housing 110 and significantly improving heat dissipation efficiency. The provision of the heat dissipation ribs 150 prevents localized overheating of the housing 110 and reduces thermal stress and deformation caused by large temperature differences, thereby improving the structural integrity and performance of the steering check 100.

[0046] The transmission shaft 120 can be constructed as an irregular cylindrical structure. The transmission shaft 120 can be movably connected to the housing 110 by means of a coaxial sleeve 230. This arrangement facilitates the transmission shaft 120 to rotate in a first direction. The first direction can be Figure 3 The direction indicated by the X in the middle. A reduction gear (not shown in the figure) is provided inside the housing 110, and the transmission shaft 120 is connected to the reduction gear through a worm gear connection. One end of the transmission shaft 120 can be connected to the steering system 10 through the adjustment support 600 in the following embodiment. With this arrangement, when the steering system 10 sends a steering instruction to the steering limiter 100, the steering instruction can be transmitted to the transmission shaft 120, and then transmitted by the transmission shaft 120 to the steering motor 400 in the following embodiment. By providing the transmission shaft 120, the accurate transmission of the steering instruction can be ensured, thereby achieving precise steering of the road marking machine 1. The transmission shaft 120 can greatly improve the reliability and stability of the steering operation, so that the road marking machine 1 can complete the marking task efficiently and accurately.

[0047] The transmission shaft 120 of the steering limiter 100 can be movably connected to the other end of the universal joint 300 through the universal joint 500. With this arrangement, the user rotates the steering wheel assembly 200 to drive the universal joint 300 to rotate, thereby driving the transmission shaft 120 of the steering limiter 100 to rotate, thereby realizing direction control of the road marking machine 1.

[0048] The limiting shaft 130 can be constructed as an irregular stepped cylindrical structure. The limiting shaft 130 can be movably connected to the reduction gear inside the housing 110 by means of a coaxial sleeve 230, and penetrates both ends of the housing 110 along the second direction, so that the limiting shaft 130 can rotate inside the housing 110 around the second direction. The second direction can be Figure 3The direction indicated by Y. The limit shaft 130 can be in contact with the inner wall of the reduction gear. With such a setting, when the steering limiter 100 receives the steering action of the steering system 10, the transmission shaft 120 can rotate around the first direction, thereby driving the reduction gear to rotate around the second direction, and further driving the limit shaft 130 to rotate around the second direction. By setting the limit shaft 130, not only can the steering action be accurately transmitted, the steering angle be limited, and the steering accuracy be ensured, but also the rotation speed can be reduced and the torque can be increased by cooperating with the reduction gear, making the steering of the road marking machine 1 smoother and easier, and ensuring stable driving.

[0049] The limiting part 140 can be constructed in a disc structure. The limiting part 140 can be fixedly installed on one side of the housing 110 by means of threaded connection. Along the second direction of the housing 110, the limiting part 140 can be movably connected to one end of the limit shaft 130 by means of sleeving. With such a setting, the limiting part 140 can limit the rotation angle of the limit shaft 130, thereby adjusting the steering angle of the road marking machine 1.

[0050] The cross-sectional shape of the limiting part 140 should be slightly smaller than the cross-sectional shape of the housing 110 along the second direction. This can greatly improve the stability of the steering limiter 100 and prevent the limiting part 140 from colliding with other components and being damaged during the operation of the steering limiter 100. A through hole 141 can be opened at the center position of the limiting part 140, and the diameter of the through hole 141 should be slightly larger than the cross-sectional diameter of the limit shaft 130. With such a setting, it is convenient for the limit shaft 130 to rotate freely inside the through hole 141. The limit protrusion 1411 can be fixedly installed on the inner side of the through hole 141 by means of welding or integral molding connection. The limiting part 140 can limit the maximum steering angle of the steering limiter 100 through the limit protrusion 1411, thereby ensuring the safety of the steering limiter 100.

[0051] The limit key 131 can be fixedly installed on the side wall of the limit shaft 130 by means of welding or integral molding connection. It should be noted that the structure of the limit key 131 should match that of the limit protrusion 1411. With such a setting, it is convenient for the limit key 131 to abut against the limit protrusion 1411 to limit the maximum steering angle of the steering limiter 100, thereby limiting the maximum steering angle of the road marking machine 1 and greatly improving the stability and safety of the road marking machine 1.

[0052] The steering motor 400 can be configured as a servo motor. The rotating shaft of the steering motor 400 can be fixedly connected to the other end of the transmission shaft 120 via a coaxial connection. With this arrangement, rotation of the steering wheel assembly 200 can drive the rotating shaft of the steering motor 400 to rotate. The steering motor 400 can be electrically connected to the chassis 20 of the road marking machine 1 via a wired connection. With this arrangement, the steering motor 400 can transmit the steering command from the steering limiter 100 to the chassis 20, thereby enabling the chassis 20 to rotate to a corresponding angle, thereby controlling the steering of the road marking machine 1.

[0053] Please continue to see Figure 1 and Figure 2 As shown, in an optional embodiment of the present invention, the steering system 10 further includes an adjusting support 600, one end of which is fixedly connected to the transmission shaft 120 of the steering limiter 100, and the universal joint 300 is transmission-connected to the steering limiter 100 via the adjusting support 600.

[0054] Specifically, the adjustment support 600 can be fixedly connected to the transmission shaft 120 by means of bolts and nuts, which ensures that power and motion can be stably and reliably transmitted between the adjustment support 600 and the transmission shaft 120, and is easy to disassemble and maintain. The universal joint 300 can be connected to the steering limiter 100 through the adjustment support 600, and the universal joint 300 is connected to the adjustment support 600 and the transmission shaft 120 through the universal joint 500. This can effectively compensate for the relative displacement between the components in the steering system 10, while ensuring the continuity and stability of the torque transmission of the steering wheel 210. With this arrangement, the road marking machine 1 can accurately limit the steering angle when driving on uneven roads, prevent oversteering, ensure the controllability and safety of the road marking machine 1, and provide users with a stable and reliable steering experience.

[0055] Please continue to see Figure 1 and Figure 2 As shown, according to one embodiment of the present invention, the steering motor 400 has an angle sensor 410, which is arranged corresponding to the other end of the rotating shaft away from the transmission shaft 120. The angle sensor 410 is electrically connected to the controller so that the angle sensor 410 measures and sends the rotation angle of the steering wheel assembly 200 to the controller.

[0056] Specifically, the angle sensor 410 can be fixedly installed with the steering motor 400 by means of a threaded connection. The angle sensor 410 can be arranged at the other end of the rotating shaft away from the transmission shaft 120. In this way, the angle sensor 410 can detect the rotation angle of the steering wheel assembly 200 in real time. The angle sensor 410 can be electrically connected to the controller by means of a wired connection or a wireless connection. In this way, the angle sensor 410 can send the rotation angle data of the steering wheel assembly 200 to the controller, and then the controller sends it to the traveling system 40. The traveling system 40 performs corresponding steering according to the rotation angle data. By setting the angle sensor 410, the closed-loop feedback and dynamic calibration of the steering command can be realized, ensuring the precise control of the steering angle of the road marking machine 1.

[0057] Please continue to refer to Figure 1 and Figure 5 As shown, according to another embodiment of the present invention, the traveling system 40 includes: a steering mechanism 700, which is arranged at one end of the chassis 20 and is used to control the traveling direction of the road marking machine 1; a driving mechanism 800, which is arranged at the other end of the chassis 20 and is used to drive the road marking machine 1 to move.

[0058] Specifically, the steering mechanism 700 can be arranged at one end of the chassis 20 along the width direction of the traveling system 40, and the width direction of the traveling system 40 can be Figure 1 the direction indicated by Z in

[0059] The steering mechanism 700 can be electrically connected to the controller. In this way, the steering mechanism 700 can convert the steering command sent by the controller into a mechanical action, so as to adjust and control the traveling direction of the road marking machine 1 in real time according to the steering command.

[0060] Please continue to refer to Figures 5 - 7As shown, according to another embodiment of the present invention, the steering mechanism 700 includes: a slewing support group 710, which is movably connected to the chassis 20; a steering wheel group 720, which is arranged at the bottom of the chassis 20 and connected to the slewing support group 710; a steering wheel motor 730, which is fixedly connected to the slewing support group 710, and the steering wheel motor 730 is electrically connected to the steering system 10. The steering system 10 drives the steering wheel group 720 to rotate around the slewing support group 710 through the steering wheel motor 730 to make the steering wheel group 720 steer.

[0061] Specifically, one end of the slewing support assembly 710 can be fixedly connected to the chassis 20 via a slewing bearing 711 described in the following embodiments. This arrangement ensures that the steering mechanism 700 has excellent mobility and stability during operation. The slewing support assembly 710 provides a solid foundation for the operation of the entire steering mechanism 700. The slewing support assembly 710 can effectively reduce the vibration and shaking generated by the road marking machine 1 during driving and operation, making the marking operation more stable and improving the quality and accuracy of the marking. It can also extend the service life of the road marking machine 1 and reduce fatigue damage to mechanical components caused by vibration.

[0062] The steering wheel assembly 720 includes a left steering wheel 721 and a right steering wheel 722. The steering wheel assembly 720 is movably connected to the slewing support assembly 710 via a wheel hub (not shown). This arrangement allows the steering wheel assembly 720 to work in conjunction with the slewing support assembly 710 to convert a user's steering commands into actual steering movements for the vehicle. For example, when marking a curved road, the user manipulates the steering wheel 210 to rotate the left steering wheel 721 and the right steering wheel 722 in the steering wheel assembly 720 at different angles and speeds. This allows the road marking machine 1 to smoothly follow the curve of the curve, accurately drawing markings that meet design requirements, and thereby improves the operating efficiency and marking accuracy of the road marking machine 1.

[0063] The steering wheel motor 730 can be fixedly connected to the support plate 7121 of the slewing support assembly 710 via a threaded connection, which allows the slewing support assembly 710 to provide stable support for the steering wheel motor 730. The steering wheel motor 730 can be connected to the slewing support bearing 711 via gear meshing. In this arrangement, the steering wheel motor 730 can rotate around the slewing support assembly 710 to drive the steering wheel assembly 720 to steer.

[0064] The steering wheel motor 730 can be electrically connected to the steering system 10 in a wired connection manner, which facilitates the steering system 10 to send steering instructions to the steering wheel motor 730. The steering instructions can include information such as the steering direction and steering angle, enabling the steering wheel motor 730 to accurately control the rotation speed and angle of the steering wheel set 720 according to the steering instructions, thereby precisely controlling the rotation speed and angle of the steering wheel set 720 to ensure that the road marking machine 1 can operate stably and efficiently along the correct route and direction during the marking operation.

[0065] The steering wheel motor 730 has a driving wheel 731, and the driving wheel 731 is in meshing transmission with the outer ring 7111 of the slewing bearing 711, so that the steering wheel motor 730 drives the slewing support group 710 to rotate. The driving wheel 731 can be fixedly connected to the drive shaft of the steering wheel motor 730 in a coaxial connection manner, which facilitates the steering wheel motor 730 to drive the driving wheel 731 to rotate. The driving wheel 731 can be in transmission connection with the outer ring 7111 of the slewing bearing 711 in a gear meshing manner. With such a setting, the driving wheel 731 can drive the outer ring 7111 of the slewing bearing 711 to rotate to drive the steering wheel set 720 to rotate, completing the precise steering of the road marking machine 1. By adjusting the tooth number ratio of the driving wheel 731 and the outer ring 7111 of the slewing bearing 711, different transmission ratios can be achieved, thereby precisely adjusting the rotation speed and torque of the slewing support group 710 to precisely control the steering angle of the road marking machine 1 and greatly improve the stability of the road marking machine 1.

[0066] Through the combination of the slewing support group 710, the steering wheel set 720, and the steering wheel motor 730, the road marking machine 1 can be provided with flexible and controllable steering capabilities, and can well meet the marking operation requirements under various road conditions.

[0067] Please continue to refer to Figures 5 - 7 As shown, according to an optional embodiment of the present invention, the slewing support group 710 includes: a slewing bearing 711, the outer ring 7111 of the slewing bearing 711 is rotatably connected to the chassis 20, and the outer ring 7111 of the slewing bearing 711 is in transmission connection with the steering wheel motor 730; a support assembly 712, one end of the support assembly 712 is fixedly connected to the inner ring 7112 of the slewing bearing 711, and the other end of the support assembly 712 is fixedly connected to the support shaft 723 of the steering wheel set 720.

[0068] Specifically, the outer ring 7111 of the slewing bearing 711 can be fixedly connected to the chassis 20 by means of threaded connection. With such an arrangement, the chassis 20 can provide stable support for the slewing bearing 711. The outer ring 7111 of the slewing bearing 711 can be provided with gears, and the outer ring 7111 of the slewing bearing 711 can be drivingly connected to the steering wheel motor 730 by means of gear meshing. With such an arrangement, when the steering wheel motor 730 receives a steering command from the steering system 10, the steering wheel motor 730 can rotate in a specified direction and by a specified angle around the outer ring 7111 of the slewing bearing 711, thereby driving the steering wheel set 720 to steer in a specified direction and by a specified angle.

[0069] It should be noted that one end of the support assembly 712 can be fixedly connected to the inner ring 7112 of the slewing bearing 711 by means of threaded connection, and the other end of the support assembly 712 can be fixedly connected to the support shaft 723 of the steering wheel set 720 by means of coaxial connection or welding. One side of the support assembly 712 can be fixedly connected to the steering wheel motor 730. With such an arrangement, when the steering wheel motor 730 rotates around the slewing bearing 711, it can drive the support assembly 712 to rotate, thereby driving the steering wheel set 720 to achieve the steering of the road marking machine 1.

[0070] Please continue to refer to Figure 5 As shown, according to a further embodiment of the present invention, the drive mechanism 800 includes: a drive wheel 810, the drive wheel 810 is connected to the chassis 20; a drive motor 820, the drive motor 820 is fixedly connected to the chassis 20, and the drive motor 820 is drivingly connected to the drive wheel 810, and the drive wheel 810 is used to drive the drive wheel 810 to rotate.

[0071] Specifically, the number of drive wheels 810 can be two, and the drive wheels 810 can be respectively arranged on opposite sides of the chassis 20. The drive wheels 810 can be drivingly connected to the chassis 20 through hubs (not shown in the figure). With such an arrangement, by driving the drive wheels 810 to rotate, the chassis 20 can be driven to move.

[0072] The number of drive motors 820 can be two. The drive motors 820 can be fixedly installed at the bottom of the chassis 20 respectively through fasteners such as bolts and nuts, and are arranged corresponding to the two drive wheels 810, so as to ensure that the drive motors 820 are stably and reliably fixed on the chassis 20 during operation, thereby improving the safety and stability of the drive mechanism 800.

[0073] The drive motor 820 can be electrically connected to the steering wheel motor 730 by means of wired connection. With such an arrangement, the drive motor 820 can make corresponding steering and movement according to the steering command and drive command of the steering wheel motor 730.

[0074] The output shaft of the drive motor 820 (not shown in the figure) can be drivingly connected to the hub of the drive wheel 810 by means of a key connection. When the drive motor 820 operates, the output shaft of the drive motor 820 rotates, which can drive the drive wheel 810 to rotate, thereby enabling the movement of the road marking machine 1. For example, when the drive motor 820 rotates forward, the output shaft can drive the drive wheel 810 to rotate forward, thereby enabling the road marking machine 1 to move forward; when the drive motor 820 rotates in reverse, the output shaft can drive the drive wheel 810 to rotate in reverse, thereby enabling the road marking machine 1 to move backward. Through the drive mechanism 800, the precise movement of the road marking machine 1 can be achieved, thereby significantly improving the movement accuracy and working efficiency of the road marking machine 1.

[0075] Please continue to refer to Figures 5 - 7 As shown, in an alternative embodiment of the present invention, the support assembly 712 includes: a support plate 7121, one side of the support plate 7121 is fixedly connected to the inner ring 7112 of the slewing bearing 711, and one end of the support plate 7121 is fixedly connected to the steering wheel motor 730; a deflection mechanism 7122, the deflection mechanism 7122 is fixedly connected to the other side of the support plate 7121, the deflection mechanism 7122 is disposed in the middle of the steering wheel group 720, and the deflection mechanism 7122 is used to adjust the tilt angle of the steering wheel group 720.

[0076] Specifically, the support plate 7121 can be configured as an irregular plate-like structure, and the construction material of the support plate 7121 can be a metal material; for example: high-strength steel or aluminum alloy, and the metal material has a relatively high strength, so as to ensure that the support plate 7121 can withstand various forces generated by the steering wheel group 720 during operation, and further ensure the safety of the road marking machine 1 during operation. A plurality of mounting holes (not marked in the figure) can be formed on the support plate 7121, and the support plate 7121 can be threadedly connected to the inner ring 7112 of the slewing bearing 711 through the mounting holes, so as to realize the fixed connection between the support plate 7121 and the slewing bearing 711, which is convenient for the support plate 7121 to provide stable support for the slewing bearing 711. One end of the support plate 7121 can be fixedly connected to the steering wheel motor 730 by means of a threaded connection. With such a setting, when the steering wheel motor 730 rotates around the outer ring 7111 of the slewing bearing 711, it can drive the support plate 7121 to rotate relative to the outer ring 7111 of the slewing bearing 711, thereby driving the steering wheel group 720 to rotate around the outer ring 7111 of the slewing bearing 711 to realize the steering of the steering wheel group 720.

[0077] The deflection mechanism 7122 can be fixedly connected to the other side of the support plate 7121 through connection means such as welding, riveting or threaded connection. The deflection mechanism 7122 can be arranged in the middle of the steering wheel set 720, that is, the deflection mechanism 7122 can be arranged between the left steering wheel 721 and the right steering wheel 722. With such an arrangement, the deflection mechanism 7122 can adjust the tilt angle of the steering wheel set 720 in real time, greatly improving the shock absorption capacity of the road marking machine 1.

[0078] Please continue to refer to Figure 5 and Figure 6 As shown, in some examples of the present invention, the deflection mechanism 7122 includes: a baffle 71221, the baffle 71221 includes a left baffle and a right baffle arranged symmetrically, one end of the baffle 71221 is fixedly connected to the other side of the support plate 7121, and the baffle 71221 is arranged in the middle of the steering wheel set; a fixing plate 71222, the fixing plate 71222 is arranged between the left baffle and the right baffle, one end of the fixing plate 71222 is fixedly connected to the other side of the support plate 7121, and the fixing plate 71222 is used to connect the left baffle and the right baffle; a rotating shaft 71223, the rotating shaft 71223 penetrates through the fixing plate 71222 along the width direction of the steering mechanism 700, and the rotating shaft 71223 is used to adjust the tilt angles of the baffle 71221 and the fixing plate 71222.

[0079] Specifically, the baffle 71221 can be constructed as a rectangular structure with grooves (not marked in the figure), and the construction material of the baffle 71221 can be high-strength steel or aluminum alloy, so as to ensure the strength and durability of the baffle 71221. The number of the baffles 71221 can be two, and the baffles 71221 can be arranged in the middle of the left steering wheel 721 and the right steering wheel 722 and are in a symmetric arrangement state. With such an arrangement, the baffle 71221 can play a role in limiting and guiding the steering wheel set 720, and at the same time provide support and a structural basis for adjusting the tilt angle of the steering wheel set 720, limit the excessive deflection of the steering wheel set 720 under abnormal conditions, and ensure that the steering wheel set 720 stably and accurately adjusts the tilt angle within the set angle range.

[0080] The fixed plate 71222 can be configured as a rectangular structure with a circular through-hole. One end of the fixed plate 71222 can be fixedly connected to the other side of the support plate 7121 by welding or threaded connection, so as to ensure that during the operation of the deflection mechanism 7122, the fixed plate 71222 and the support plate 7121 can act stably together, providing a reliable support basis for adjusting the tilt angle of the steering wheel set 720. The two sides of the fixed plate 71222 are respectively fixedly connected to the left baffle and the right baffle by means of bolts and nuts, welding, etc. The fixed plate 71222 can connect the left baffle and the right baffle into a whole, making the structure of the entire deflection mechanism 7122 more compact and stable, enhancing the overall rigidity of the deflection mechanism 7122, ensuring that when adjusting the tilt angle of the steering wheel set 720, the left baffle and the right baffle can act cooperatively to jointly control the deflection direction and angle of the steering wheel set 720, and guaranteeing the accuracy and stability of steering.

[0081] The rotating shaft 71223 can be configured as a cylindrical structure. The construction material of the rotating shaft 71223 can be high-strength alloy steel, so as to ensure that the rotating shaft 71223 has high strength and wear resistance and can withstand frequent rotation and torque transmission. The rotating shaft 71223 can penetrate the circular through-hole on the fixed plate 71222 along the width direction of the steering mechanism 700 and be fixedly connected to the fixed plate 71222 by means of coaxial socketing to achieve low-friction rotational movement. The width direction of the steering mechanism 700 can be Figure 3 the direction indicated by Z in the middle.

[0082] A road marking machine 1 according to an embodiment of the present invention includes the steering and traveling device 11 for the road marking machine 1 in the above embodiment. Among them, the specific structure and working principle of the steering and traveling device 11 for the road marking machine 1 have been explained in detail in the above embodiment, and will not be elaborated here one by one.

[0083] The steering and traveling device 11 for the road marking machine 1 according to an embodiment of the present invention and other components of the road marking machine 1 such as: threaded connection, bolts, hubs, etc. and operations are known to those of ordinary skill in the art and will not be described in detail here.

[0084] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples" or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0085] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A steering and traveling device for a road marking machine, characterized in that, Comprising: Chassis; Frame, the frame being connected to the chassis; Steering system, the steering system being connected to the frame; Traveling system, the traveling system being disposed at the bottom of the chassis, the traveling system being electrically connected to the steering system, and the steering system controlling the traveling direction of the road marking machine through the traveling system; Controller, the controller being connected to the frame, the controller being electrically connected to the steering system and the traveling system respectively, and the steering system sending a steering instruction to the traveling system through the controller.

2. The steering and traveling device for a road marking machine according to claim 1, wherein, The steering system includes: Steering wheel assembly; Cardan shaft, one end of the cardan shaft being connected to the steering wheel assembly; Steering limiter, the other end of the cardan shaft being connected to the transmission shaft of the steering limiter, and the steering limiter being used to limit the rotation angle of the cardan shaft; Steering motor, the rotating shaft of the steering motor being drivingly connected to the other end of the transmission shaft, the steering motor being electrically connected to the controller, and the steering wheel assembly sending a steering instruction to the controller through the steering motor to control the traveling direction of the road marking machine.

3. The steering and traveling device for a road marking machine according to claim 2, characterized in that, The steering motor is provided with an angle sensor, the angle sensor being correspondingly arranged at the other end of the rotating shaft departing from the transmission shaft, and the angle sensor being electrically connected to the controller so that the angle sensor measures and sends the rotation angle of the steering wheel assembly to the controller.

4. The steering and traveling device for a road marking machine according to claim 1, characterized in that, The traveling system includes: Steering mechanism, the steering mechanism being disposed at one end of the chassis, and the steering mechanism being used to control the traveling direction of the road marking machine; Drive mechanism, the drive mechanism being disposed at the other end of the chassis, and the drive mechanism being used to drive the road marking machine to move.

5. The steering and traveling device for a road marking machine according to claim 4, characterized in that, The steering mechanism includes: Slewing bearing group, the slewing bearing group being movably connected to the chassis; Steering wheel group, the steering wheel group being disposed at the bottom of the chassis and connected to the slewing bearing group; Steering wheel motor, the steering wheel motor being connected to the slewing bearing group, the steering wheel motor being electrically connected to the steering system, and the steering system driving the steering wheel group to rotate around the slewing bearing group through the steering wheel motor so that the steering wheel group steers.

6. The steering and traveling device for a road marking machine according to claim 5, characterized in that, The slewing bearing group includes: Driven wheel, one end of the driven wheel being rotatably connected to the chassis, and the driven wheel being drivingly connected to the steering wheel motor; Slewing bearing, the outer ring of the slewing bearing being fixedly connected to the chassis, and the outer ring of the slewing bearing being drivingly connected to the steering wheel motor; Support assembly, one end of the support assembly being fixedly connected to the inner ring of the slewing bearing, and the other end of the support assembly being fixedly connected to the support shaft of the steering wheel group.

7. The steering and traveling device for a road marking machine according to claim 4, characterized in that The drive mechanism includes: Drive wheel, the drive wheel being connected to the chassis; Drive motor, the drive motor being fixedly connected to the chassis, and the drive motor being drivingly connected to the drive wheel, and the drive wheel being used to drive the drive wheel to rotate.

8. The steering and traveling device for a road marking machine according to claim 6, characterized in that, The support assembly includes: Support plate, one side of the support plate being fixedly connected to the inner ring of the slewing bearing, and one end of the support plate being fixedly connected to the steering wheel motor; Deflection mechanism, the deflection mechanism is fixedly connected to the other side of the support plate, the deflection mechanism is arranged in the middle of the steering wheel set, and the deflection mechanism is used to adjust the inclination angle of the steering wheel set.

9. The steering and traveling device for a road marking machine according to claim 8, characterized in that, The deflection mechanism includes: A baffle plate, the baffle plate includes a left baffle plate and a right baffle plate which are symmetrically arranged, one end of the baffle plate is fixedly connected to the other side of the support plate, and the baffle plate is arranged in the middle of the steering wheel set; A fixing plate, the fixing plate is arranged between the left baffle plate and the right baffle plate, one end of the fixing plate is fixedly connected to the other side of the support plate, and the fixing plate is used to connect the left baffle plate and the right baffle plate; A rotating shaft, the rotating shaft penetrates through the fixing plate along the width direction of the steering mechanism, and the rotating shaft is used to adjust the inclination angles of the baffle plate and the fixing plate.

10. A road marking machine, characterized in that, It includes the steering and traveling device for a road marking machine according to any one of claims 1-9.

Images