Walking mechanism for road marking machine

Abstract

The utility model discloses a walking mechanism for a road marking machine, and relates to the technical field of road marking equipment. According to the walking mechanism for the road marking machine, the equipment has the capability of freely rotating in all directions, and the flexibility of the marking machine in complex path construction is greatly improved. The walking mechanism comprises a frame, a walking mechanism and a driving mechanism, wherein the frame is used for mounting a road marking machine main body; the number of the driving wheels is two, and the two driving wheels are coaxially arranged; the two driving structures are connected with the driving wheels in a one-to-one correspondence manner; the supporting wheels are universal wheels, and the supporting wheels and the driving wheels are located on the same plane; wherein the two driving structures are in signal connection with the control system, and the control signal system is used for independently controlling the driving state of each driving structure.

Description

Technical Field

[0001] This utility model relates to the field of road marking equipment technology, and in particular to a walking mechanism for a road marking machine. Background Technology

[0002] Road markings, as an important traffic facility, are widely used in urban roads, highways, parking lots, squares, and running tracks. Through lines, arrows, rumble strips, and speed reduction markings, road markings provide traffic guidance, directional information, and warnings to road users, greatly improving road traffic safety and efficiency.

[0003] With the continuous increase in traffic volume, the demand for complex road markings (such as rumble strips, lane dividers, lane markings, and curve indicator markings) is gradually increasing. However, existing road marking machines typically rely on manual operation to propel the equipment forward and manually adjust the direction to complete the marking. This method can meet the basic needs of simple road marking construction, but it has significant shortcomings in the construction of complex road markings (such as rumble strips, lane dividers, and arrow markings).

[0004] Therefore, the existing road marking machine's walking mechanism has a technical problem: it cannot rotate freely in all directions, which means that complex markings need to be pushed manually, resulting in low efficiency. Utility Model Content

[0005] This utility model aims to at least solve one of the technical problems existing in the prior art. Therefore, one object of this utility model is to provide a traveling mechanism for a road marking machine. This traveling mechanism for the road marking machine includes:

[0006] A frame, which is used to mount the main body of the road marking machine;

[0007] The drive wheels are two in number and are coaxially arranged.

[0008] Two drive structures are connected to the drive wheels in a one-to-one correspondence.

[0009] The support wheel is a swivel wheel, and the support wheel and the drive wheel are on the same plane;

[0010] The two drive structures are connected to the control system signal system, which is used to independently control the drive state of each drive structure.

[0011] In some examples of this utility model, the bottom of the frame is provided with two mounting seats for mounting the drive structure.

[0012] In some examples of this utility model, the driving structure includes:

[0013] A driving device, wherein the driving device is installed in the mounting base and the driving end of the driving device extends out of the mounting base;

[0014] The transmission structure has a power end that is connected to the drive device, and an output end that is connected to the drive wheel.

[0015] In some examples of this utility model, the drive structure further includes a speed reducer, which is installed between the drive device and the transmission structure.

[0016] In some examples of this utility model, the transmission structure includes:

[0017] A half-shaft is rotatably mounted on the bottom of the frame and is used to connect the output end of the drive unit to the hub of the drive wheel.

[0018] A protective sleeve that covers the outside of the half-shaft.

[0019] In some examples of this utility model, the transmission structure further includes:

[0020] Bearing housing, which is fixed to the vehicle frame by bolts or welding;

[0021] The bearing body, which is either a ball bearing body or a tapered roller bearing body, is used to support and guide the rotation of the half shaft. The bearing body is installed in a bearing seat on the frame.

[0022] In some examples of this utility model, a braking structure is also included, which is installed inside the drive structure and is used to control the walking state of the walking mechanism.

[0023] In some examples of this utility model, the brake structure includes:

[0024] A brake lever is used to provide the driving force required for braking, and the brake lever is signal-connected to the control signal system.

[0025] The brake master cylinder is connected to the brake master cylinder via a cable and is used to adjust the pressure of the hydraulic oil output by the brake master cylinder by the opening and closing of the brake handle;

[0026] The brake slave cylinder is connected to the brake master cylinder via a hydraulic line, and the braking force of the brake slave cylinder is adjusted by the pressure of the hydraulic oil driven by the brake master cylinder.

[0027] Brake pads are disposed on the outer peripheral surface of the drive wheel and connected to the brake caliper, relying on the driving action of the brake caliper.

[0028] In some examples of this utility model, the number of the universal wheels is set to one, and the universal wheels and the drive wheels form a triangular structure in the same plane.

[0029] In some examples of this utility model, the number of the universal wheels is set to two, and the two universal wheels and the drive wheel form a rectangular structure in the same plane.

[0030] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. This invention has the following beneficial effects:

[0031] This invention utilizes two independently driven drive structures and drive wheels to form a differential structure. This allows for real-time adjustment of the speed difference between the left and right drive wheels according to the driving path requirements, achieving precise directional control and smooth steering. When the equipment turns, the differential structure adjusts the drive wheel speeds, ensuring the outer drive wheel operates at a higher speed and the inner drive wheel at a lower speed. This effectively matches the path length difference between the two drive wheels, avoiding tire slippage, path deviation, or power waste caused by speed mismatch. Simultaneously, the differential structure, combined with the omnidirectional casters on the support wheels, allows for free adjustment of the support wheels, enabling the equipment to rotate freely in all directions, significantly improving the flexibility of the line marking machine in complex path construction. The omnidirectional caster design further reduces resistance and vibration during turning, improving operational stability and efficiency. Through the coordinated work of the differential structure and the omnidirectional casters, the equipment can easily handle complex construction scenarios, such as sharp turns, narrow spaces, and curved paths, ensuring the straightness, consistency, and uniform thickness of the construction markings. Compared with traditional line marking machines that rely on manual pushing and mechanical differential speed, this utility model significantly reduces the labor intensity of operation, improves construction efficiency, and fully meets the needs of complex line marking construction for flexibility, accuracy and stability. It provides an efficient and reliable technical solution for modern line marking construction and solves the technical problem of drawing complex lines efficiently and accurately. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0033] Figure 1 A first-view structural schematic diagram of the walking mechanism for a road marking machine provided by this utility model;

[0034] Figure 2A second-view structural schematic diagram of the walking mechanism for a road marking machine provided by this utility model;

[0035] Figure 3 A third-view structural schematic diagram of the walking mechanism for a road marking machine provided by this utility model;

[0036] Figure 4 for Figure 3 A magnified view of region A in the image.

[0037] Explanation of reference numerals in the attached figures:

[0038] 100-frame;

[0039] 200 - Drive wheel;

[0040] 300 - Drive structure; 310 - Drive unit; 320 - Transmission structure; 321 - Half shaft; 322 - Bearing housing; 323 - Bearing body; 330 - Reducer;

[0041] 400-Support wheel;

[0042] 500 - Mounting base;

[0043] 600 - Brake structure. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0045] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0046] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0047] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0048] Figure 1 A first-view structural schematic diagram of the walking mechanism for a road marking machine provided by this utility model; Figure 2 A second-view structural schematic diagram of the walking mechanism for a road marking machine provided by this utility model; Figure 3 A third-view structural schematic diagram of the walking mechanism for a road marking machine provided by this utility model; Figure 4 for Figure 3 A magnified view of region A in the image.

[0049] The following is for reference. Figures 1-4 The described walking mechanism for a road marking machine according to an embodiment of the present invention includes: a frame 100 for mounting the main body of the road marking machine; two drive wheels 200 coaxially arranged; two drive structures 300 connected to the drive wheels 200 in a one-to-one correspondence; and a support wheel 400, which is a caster wheel and is on the same plane as the drive wheels 200. The two drive structures 300 are connected to a control system, which independently controls the driving state of each drive structure 300.

[0050] Specifically, a differential structure is formed by two independent drive structures 300, which can adjust the speed difference between the left and right drive wheels 200 in real time according to the needs of the road marking machine's travel path, achieving precise directional control and smooth steering. When the road marking machine is turning, the differential structure adjusts the speed of the drive wheels 200, so that the outer drive wheel 200 runs at a higher speed and the inner drive wheel 200 runs at a lower speed, thereby effectively matching the path length difference between the two drive wheels 200. In this way, problems such as tire slippage, path deviation, or power waste caused by speed mismatch can be avoided.

[0051] Furthermore, the support wheel 400 employs a swivel caster design, working synergistically with the differential structure. The support wheel 400 can freely adjust its direction, providing the traveling mechanism with omnidirectional rotation capability. This design reduces resistance and vibration when the road marking machine turns, making the equipment operate more smoothly and efficiently. The combination of the differential structure and the swivel caster allows the road marking machine to easily handle the construction needs of complex paths, such as sharp turns, operation in narrow spaces, and curved paths, significantly improving the equipment's adaptability and flexibility in various working scenarios.

[0052] Furthermore, the walking mechanism of this invention significantly improves the operational performance and construction efficiency of the road marking machine through the coordinated design of a differential structure and omnidirectional wheels. Compared with traditional equipment that relies on mechanical differential speed or manual propulsion, this walking mechanism not only reduces the labor intensity of operation but also ensures the stability and efficiency of the equipment in complex construction scenarios through precise directional control and steering operations. Especially in construction on complex paths, this design effectively solves the problems of slippage, vibration, and path deviation during the operation of the road marking machine, ensuring the accuracy and consistency of the concrete placement operation and meeting the needs of modern concrete placement equipment for high efficiency, stability, and flexibility.

[0053] It's worth noting that the drive wheel 200 can be made of tire material with a higher coefficient of friction to adapt to different ground conditions. The support wheel 400 can be replaced with casters that can be controlled in a specific direction, enhancing its adaptability in special scenarios. The control signal system can also be upgraded to a wireless control system, combined with sensor technology to monitor the drive status in real time, further improving the level of intelligence.

[0054] Please continue to refer to Figures 1-3 As shown, the bottom of the frame 100 is provided with two mounting seats 500. The mounting seats 500 are used to mount the drive structure 300 to ensure that the drive structure 300 can be firmly fixed to the frame 100 and maintain an efficient transmission connection with the drive wheel 200. The mounting seats 500 can be made of high-strength alloy steel or engineering plastics to balance load-bearing capacity and durability.

[0055] Specifically, the two mounting seats 500 at the bottom of the frame 100, through their rational arrangement, provide a stable mounting platform for the drive structure 300. The mounting seats 500 not only bear the weight of the drive structure 300, but also, through precise positioning and fixing devices, ensure that the installation angle and position of the drive structure 300 meet design requirements, thereby guaranteeing that the power output from the drive unit 310 can be efficiently transmitted to the drive wheel 200. Furthermore, the material and structural design of the mounting seats 500 effectively absorb vibrations and impacts generated during equipment operation, further improving the operational stability and durability of the road marking machine's walking mechanism. The design of the mounting seats 500 improves the installation efficiency and stability of the drive structure 300, making the power transmission to the drive wheel 200 more reliable. At the same time, this design, by optimizing the position and structure of the mounting seats 500, avoids the power loss and operational failures caused by unstable drive unit 310 or excessive vibration in traditional designs. The durability and impact resistance of the mounting seats 500 allow the road marking machine's walking mechanism to maintain good operating conditions even in harsh construction environments, thereby significantly improving the equipment's service life and reliability.

[0056] Please continue reading Figures 3-4 As shown, according to one embodiment of the present invention, the drive structure 300 includes:

[0057] The drive unit 310 is installed in the mounting base 500, and the drive end of the drive unit 310 extends out of the mounting base 500.

[0058] The transmission structure 320 has a power end that is connected to the drive device 310, and the output end of the transmission device is connected to the drive wheel 200.

[0059] The drive unit 310 outputs rotational power through its drive end, which is transmitted to the drive wheel 200 via the transmission structure 320, enabling the road marking machine to move. The transmission structure 320 may include a gear set or a chain mechanism, with its power end connected to the output shaft of the drive unit 310 via a coupling, and its output end fixed to the hub of the drive wheel 200. The mounting base 500 provides a stable fixed foundation for the drive unit 310 and optimizes the power transmission path, enabling the drive wheel 200 to operate efficiently. The tight integration of the drive unit 310 and the transmission structure 320 helps ensure the stability and accuracy of power transmission under various operating conditions, thereby achieving efficient drive.

[0060] Furthermore, the combination of the drive unit 310 and the transmission structure 320 ensures efficient and stable power transmission, reducing energy loss and failure risks common in traditional walking mechanisms. The modular design facilitates equipment installation and maintenance, lowering maintenance costs during operation. The use of gear or chain drive allows the walking mechanism to provide sufficient power support under different load conditions, ensuring continuous and efficient operation of the equipment. In addition, the combined structure of the drive unit 310 and the transmission structure 320 can adapt to different working environments, such as high-temperature, humid, or dusty construction sites, further improving the reliability and service life of the equipment.

[0061] It is worth noting that the drive unit 310 can be equipped with different types of power sources, such as electric motors, hydraulic motors, or internal combustion engines, to meet diverse operational needs. The specific form of the transmission structure 320 can be adjusted according to power requirements; for example, belt drive can be used to reduce noise, or roller drive can be used to accommodate high load demands. Furthermore, the coupling can be either a flexible coupling or a rigid coupling to address different transmission stability requirements. The structural design of the mounting base 500 can also incorporate vibration-absorbing or sound-insulating materials to optimize the smoothness and comfort of equipment operation.

[0062] Please continue reading Figure 4 As shown, according to another embodiment of the present invention, the drive structure 300 further includes a reducer 330, which is installed between the drive device 310 and the transmission structure 320.

[0063] Specifically, the high-speed rotational power generated by the drive unit 310 is first reduced in speed by the reducer 330, converting the high rotational speed into a low-speed, high-torque output more suitable for the drive wheel 200. The input end of the reducer 330 is connected to the output shaft of the drive unit 310 by a key or coupling to ensure the stability of power transmission. The output end of the reducer 330 is connected to the transmission structure 320 to further transmit the adjusted power to the drive wheel 200. The reduction ratio of the reducer 330 can be adjusted according to the load requirements of the road marking machine, typically within the range of 1:10 to 1:50, to meet the needs of different construction environments.

[0064] Furthermore, by configuring a reducer 330 between the drive unit 310 and the transmission structure 320, the drive structure 300 can achieve high torque output with lower energy loss, significantly improving the traction and adaptability of the road marking machine's walking mechanism in complex construction scenarios. The use of the reducer 330 also reduces the workload of the drive unit 310, extending its service life, while reducing system vibration and noise, and improving overall operational stability. This design enables the road marking machine to maintain a stable and efficient working state under heavy loads, and meets the high-performance requirements of construction for the walking mechanism through precise torque control.

[0065] It is worth noting that the reducer 330 can adopt various structural forms, such as a planetary reducer 330, a helical gear reducer 330, or a worm gear reducer 330, to meet different working conditions. Depending on the requirements of the construction environment, the reducer 330 can be made of high-strength alloy steel or lightweight composite materials to achieve a balance between strength and weight. The connection method between the reducer 330 and the drive unit 310 or transmission structure 320 can also be optimized according to requirements, for example, by using a flexible coupling to reduce impact loads. Furthermore, the reduction ratio range can be customized according to specific application scenarios to adapt to the speed and torque requirements under different working conditions.

[0066] Please continue reading Figure 3 and Figure 4 As shown, according to another embodiment of the present invention, the transmission structure 320 includes:

[0067] Half shaft 321 is rotatably mounted on the bottom of the frame 100. Half shaft 321 is used to connect the output end of the drive unit 310 to the hub of the drive wheel 200.

[0068] A protective cover is placed over the outside of the half-shaft 321.

[0069] Please continue reading Figure 1 As shown, according to an optional embodiment of the present invention, the transmission structure 320 further includes:

[0070] The bearing housing is fixed to the frame 100 by bolts or welding.

[0071] The bearing body 322, which is either a ball bearing body 322 or a tapered roller bearing body 322, is used to support and guide the rotation of the half shaft 321. The bearing body 322 is installed in the bearing housing on the frame 100.

[0072] Specifically, the output end of the drive unit 310 is connected to one end of the half-shaft 321 via a coupling, and the other end of the half-shaft 321 is fixedly connected to the hub of the drive wheel 200. The half-shaft 321 can stably transmit the power generated by the drive unit 310 to the drive wheel 200, ensuring the road marking machine's mobility. The half-shaft 321 is typically made of high-strength steel or wear-resistant alloy to meet the requirements of high load and continuous operation. The protective sleeve is made of corrosion-resistant and high-temperature-resistant materials, such as rubber or plastic composite materials, to prevent the half-shaft 321 from being degraded by dust, mud, or other external substances. An appropriate gap is left between the protective sleeve and the half-shaft 321 to ensure the normal rotation and heat dissipation of the half-shaft 321.

[0073] Furthermore, by introducing a half-shaft 321 and a protective sleeve into the transmission structure 320, this invention significantly improves the stability and reliability of power transmission. The half-shaft 321 design can effectively adapt to various complex construction environments, maintaining stable transmission performance under high loads and long-term operation. The use of the protective sleeve reduces the impact of the environment on the transmission structure 320, lowers the maintenance frequency and cost due to wear and corrosion, and extends the service life of the equipment. At the same time, this transmission structure 320 design simplifies the power transmission path, reduces energy loss, and improves the overall efficiency of the traveling mechanism.

[0074] It is worth noting that the structure of the half-shaft 321 can be designed as segmented or telescopic to accommodate different length requirements. The shape and material of the protective sleeve can be optimized according to the construction environment; for example, high-temperature resistant silicone material can be used to withstand high-temperature environments, or reinforced composite materials can be used to improve impact resistance. Furthermore, the half-shaft 321 can be installed via flange fixing or supported by the sliding bearing body 322 to improve operational stability. The protective sleeve can also be designed for quick disassembly to facilitate inspection and maintenance of the half-shaft 321.

[0075] Please continue reading Figure 1-3 As shown, according to a further embodiment of the present invention, a brake structure 600 is also included. The brake structure 600 is installed inside the drive structure 300 and is used to control the walking state of the walking mechanism. Through the action of the brake structure 600, braking, parking, and speed control of the road marking machine's walking mechanism can be realized, ensuring the safety and stability of the equipment operation.

[0076] Specifically, by integrating the brake structure 600 into the drive structure 300, the traveling mechanism achieves efficient braking performance and flexible speed adjustment capabilities. The brake structure 600 design simplifies the complex connection paths of traditional braking systems, shortens response time, and significantly improves parking safety on slopes or uneven ground. This design also reduces the space requirements of traditional external braking systems, making the overall structure more compact. Furthermore, the modular design of the brake structure 600 facilitates maintenance and replacement, effectively reducing equipment maintenance costs.

[0077] It is worth noting that the brake structure 600 can employ different types of braking elements, such as electromagnetic brakes or pneumatic brakes, to adapt to different working environments and operational requirements. The braking control system can be upgraded to an electronic braking system, combining sensors to achieve automated adjustment. The selection of the transmission medium can also be optimized according to actual needs, for example, using higher-performance hydraulic oil or gas to improve braking response speed and control accuracy. Furthermore, the mounting position of the brake structure 600 can be adjusted to be closer to the inner side of the drive wheel 200 to further improve braking performance and installation convenience.

[0078] In one optional embodiment of this utility model, the brake structure 600 includes:

[0079] The brake lever is used to provide the driving force required for braking, and the brake lever is connected to the control signal system.

[0080] The brake master cylinder is connected to the brake master cylinder via a cable. The pressure of the hydraulic oil output by the brake master cylinder is adjusted by the opening and closing of the brake lever.

[0081] The brake slave cylinder is connected to the brake master cylinder via hydraulic lines, and the braking force of the brake slave cylinder is adjusted by the pressure of the hydraulic oil driven by the brake master cylinder.

[0082] Brake pads are located on the outer circumferential surface of the drive wheel 200 and are connected to the brake caliper, relying on the driving action of the brake caliper.

[0083] The brake lever provides the driving force required for braking. It is connected to the control signal system to receive braking commands and perform corresponding operations. The master cylinder is connected to the brake lever via a cable; the opening and closing of the brake lever determines the displacement of the cable, thereby adjusting the pressure of the hydraulic oil output by the master cylinder. The wheel cylinders are connected to the master cylinder via hydraulic lines. Their working principle relies on the hydraulic oil pressure driven by the master cylinder to adjust the braking force of the wheel cylinders. Brake pads are mounted on the outer circumferential surface of the drive wheel 200 and connected to the wheel cylinders. The wheel cylinders drive the brake pads to clamp the drive wheel 200, thus achieving effective braking of the drive wheel 200.

[0084] The brake structure 600 integrates braking operation with the running status of the traveling mechanism through a control signal system, making braking operation more precise and sensitive. By adjusting the opening and closing angle of the brake handle, the output of hydraulic oil pressure can be precisely controlled, thereby achieving graded braking function and improving the safety and operability of the traveling mechanism. The coordinated work of the brake caliper and brake pads provides stable braking force and ensures uniform and reliable braking effect.

[0085] The brake structure 600 in this embodiment improves braking response speed and control precision through hydraulic transmission and multi-stage adjustment. Simultaneously, the direct contact between the brake pads and the drive wheel 200 allows for rapid transmission of braking force, thus meeting braking requirements under high loads or complex operating conditions. Through the integration of the control signal system, this structure can dynamically adjust braking performance during operation, further enhancing the safety and adaptability of the equipment.

[0086] In the above scheme, the brake lever can be an electronic signal output type lever to replace the mechanical cable connection, thereby improving signal transmission efficiency and anti-interference capability. The hydraulic lines of the master cylinder and wheel cylinders can be made of high-temperature and pressure-resistant materials, such as reinforced nylon or metal hoses, to meet extreme operating conditions. The brake pad material can be selected based on the material of the drive wheel 200 and the working environment, using carbon-ceramic composite materials, high-strength steel, or other wear-resistant materials to improve brake durability and performance.

[0087] Please continue reading Figure 3 As shown, in some examples of this utility model, the number of casters is set to one, and the caster and the drive wheel 200 form a triangular structure in the same plane.

[0088] Specifically, the casters are fixed to the frame 100 via mounting brackets. The bottom of the brackets is equipped with a rotary bearing body 322 or a ball bearing seat, ensuring flexible horizontal rotation of the casters. The casters are typically made of high-strength polyurethane or rubber composite materials to improve their adaptability and durability on different surfaces. The triangular arrangement of the casters allows for a reasonable distribution of the equipment's center of gravity, ensuring good stability and balance of the traveling mechanism during operation. When the road marking machine turns or changes direction, the casters can flexibly adjust their direction, effectively reducing slippage and friction of the drive wheels 200.

[0089] Furthermore, by employing a triangular structure formed by a single omnidirectional wheel and two drive wheels 200, this invention significantly enhances the steering flexibility and adaptability of the walking mechanism. The omnidirectional wheel design effectively reduces energy consumption and vibration during turning, improving operational smoothness and efficiency. The stability design of the triangular structure enables the equipment to adapt to complex terrain and construction environments, exhibiting superior flexibility, especially in narrow spaces or curved paths. Compared to traditional four-wheel designs, the triangular structure reduces the number of ground wheels, optimizing the equipment's turning radius and handling performance.

[0090] It's worth noting that the position of the casters can be adjusted according to actual needs, such as installing them in the middle of the frame 100 to optimize the overall center of gravity distribution. The material and size of the casters can also be optimized for different ground conditions; for example, high-friction rubber wheels can be used on smooth surfaces, or metal wheels can be used on rough surfaces to enhance durability. Furthermore, the casters can be designed with a detachable connection for easy replacement or maintenance. The size and angle of the triangular structure can also be adjusted according to the specific needs of the equipment to further improve the operational stability and directional control of the walking mechanism.

[0091] In some examples of this utility model, there are two casters, and the two casters and the drive wheel 200 form a rectangular structure in the same plane.

[0092] Specifically, two casters are mounted on the bottom of the frame 100 via caster support devices. These support devices consist of a rotary bearing body 322 and a fixed bracket, providing a stable connection and flexible rotation support for the casters. The casters can be made of high-strength polyurethane or wear-resistant rubber, with the hubs made of metal to enhance strength and durability. The rectangular layout allows the weight of the traveling mechanism to be more evenly distributed across the four contact points, thereby improving the overall stability and smooth operation of the equipment. When the equipment moves or turns, the two casters can adjust their direction synchronously, reducing slippage and wear of the drive wheels 200.

[0093] Furthermore, by employing a rectangular structure formed by two omnidirectional wheels and two drive wheels 200, this invention improves the balance and load-bearing capacity of the road marking machine's walking mechanism. The rectangular structure design provides a larger ground contact area, enabling the equipment to remain stable during operation and exhibiting good adaptability even under high loads or on uneven terrain. The flexible rotation capability of the two omnidirectional wheels further enhances the equipment's maneuverability, reducing turning resistance and energy consumption. Compared to traditional triangular structures or fixed wheel designs, the rectangular structure significantly reduces the risk of tipping over during operation and improves the accuracy of directional adjustments.

[0094] It's worth noting that the position of the two casters can be optimized based on the equipment's center of gravity distribution. For example, they can be installed front-to-back to enhance longitudinal stability, or side-to-side to improve lateral stability. The material and size of the casters can be adjusted according to the working environment. For instance, a wider wheel design can be used on soft ground to increase the ground contact area, or a high-hardness material can be used on hard surfaces to improve wear resistance. Furthermore, the caster support can be designed as an adjustable-height structure to accommodate equipment of different heights. The proportions of the rectangular structure can also be optimized according to the specific application of the equipment to further enhance operational flexibility and load capacity.

[0095] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0096] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A traveling mechanism for a road marking machine, characterized by, The utility model relates to a road marking machine walking mechanism, including: Frame, the frame is used for installing road marking machine body; Driving wheel, the number of two driving wheels is coaxial; Two drive structures, the drive structure is connected with the driving wheel one by one; Supporting wheel, the supporting wheel is universal wheel, and the supporting wheel is in the same plane with the driving wheel; Wherein, two drive structures are connected with control system signal, and the control system is used for independently controlling the driving state of each drive structure.

2. The travel mechanism of the road marking machine according to claim 1, characterized by, The bottom of the frame is provided with two mounting seats, and the mounting seat is used for installing the drive structure.

3. The travel mechanism of the road marking machine according to claim 2, characterized by, The drive structure includes: Drive device, the drive device is installed in the mounting seat, and the driving end of the drive device is out of the mounting seat; Transmission structure, the power end of the transmission structure is drivingly connected with the drive device, and the output end of the transmission structure is drivingly connected with the driving wheel.

4. The travel mechanism of the road marking machine according to claim 3, wherein The drive structure further includes a speed reducer, which is installed between the drive device and the transmission structure.

5. The travel mechanism of the road marking machine according to claim 4, wherein The transmission structure includes: Half shaft, the half shaft is drivingly installed at the bottom of the frame, and is used for connecting the output end of the drive device and the hub of the driving wheel; Protective sleeve, the protective sleeve covers the outside of the half shaft.

6. The travel mechanism of the road marking machine according to claim 5, wherein The transmission structure further includes: Bearing seat, the bearing seat is fixed on the frame by bolts or welding; Bearing body, the bearing body is a ball bearing body or a tapered roller bearing body, used for supporting and guiding the rotation of the half shaft, and the bearing body is installed in the bearing seat on the frame.

7. The travel mechanism of the road marking machine according to claim 5, wherein Further including brake structure, the brake structure is installed in the drive structure, and the brake structure is used for controlling the walking state of the walking mechanism.

8. The travel mechanism of the road marking machine according to claim 7, wherein The brake structure includes: Brake handle, used for providing the driving force required by the brake, and the brake handle is connected with the control system signal; Master cylinder, connected with the master cylinder by a pull wire, and the opening and closing size of the brake handle is relied on to adjust the pressure of the output hydraulic oil of the master cylinder; Brake cylinder, connected with the master cylinder by a hydraulic pipeline, and the brake force of the brake cylinder is adjusted according to the pressure of the hydraulic oil driven by the master cylinder; Brake pad, arranged on the outer peripheral surface of the driving wheel, connected with the brake cylinder, and driven by the brake cylinder.

9. The travel mechanism of the road marking machine according to claim 5, wherein, The number of universal wheels is one, and the universal wheel forms a triangular structure with the driving wheel in the same plane.

10. The travel mechanism of the road marking machine according to claim 5, wherein The number of universal wheels is two, and the two universal wheels form a rectangular structure with the driving wheel in the same plane.

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