A remote control type mobile chassis for a commercial mobile body

Abstract

The utility model discloses a kind of mobile chassis for remote control type commercial mobile body, it is related to mobile chassis technical field.The mobile chassis includes frame, remote controller and signal converter, and shock-absorbing mechanism is connected with transmission rod through connecting piece, connecting shaft and is connected to the lower frame, rear end transmission rod is driven by driving motor and is connected solid wheel, and front end is connected solid wheel by steering mechanism, signal converter is connected driving motor and control system by double interface respectively, and remote controller integrates rocker, steering switch and the like to realize remote control.It uses solid wheel to improve durability, and realizes self-moving by electric drive and remote control, and redundant steering design enhances operation safety, and two-channel signal processing guarantees control accuracy, and multistage shock-absorbing mechanism protects bearing equipment, and it is suitable for stable, safe and convenient movement of mobile body in commercial scene, reduces maintenance cost and safety risk.

Description

Technical Field

[0001] This utility model relates to the field of mobile chassis technology, and in particular to a mobile chassis for remote-controlled commercial mobile devices. Background Technology

[0002] Currently available mobile shops have significant technical shortcomings in terms of mobility. Their commonly used mobile structures are mainly divided into two categories: one is to add ordinary casters, and the other is to equip them with car wheels.

[0003] Ordinary casters are typically made of rubber or plastic. These materials are prone to aging, cracking, and wear during long-term use due to factors such as ground friction, ultraviolet radiation, and temperature changes. Industry statistics show that the average lifespan of ordinary casters is only 3-6 months. In high-frequency commercial settings, maintenance may be required 2-3 times per month, with annual replacement costs accounting for 15%-20% of the total equipment investment. Furthermore, ordinary casters have limited load-bearing capacity, generally not exceeding 50kg per wheel. When a shop carries a large amount of goods, wheel deformation and breakage are highly likely, severely impacting mobility.

[0004] While self-propelled shops using car-wheel sets solve the load-bearing capacity issue, they require professional drivers. This not only increases labor costs but also limits operational flexibility. In densely populated commercial areas, drivers struggle to precisely control the movement's start, stop, and steering, greatly increasing the risk of collisions. Furthermore, the large turning radius of car-wheel sets makes it difficult to maneuver in confined spaces, restricting the application scenarios for self-propelled shops.

[0005] More importantly, both existing mobile methods lack a power drive system. Shops using ordinary casters rely entirely on manual pushing. When encountering slopes of 3 degrees or more, it requires 2-3 people working together to push them, and slippage is common during this process, posing a serious safety hazard. According to incomplete statistics, accidents involving manually propelled mobile shops on slopes account for more than 30% of all accidents involving mobile commercial equipment each year.

[0006] Existing mobile chassis employ technologies such as solid tires, electric drive, and remote control, which can effectively solve the above problems and provide an efficient, safe, and convenient mobile solution for mobile shops. Utility Model Content

[0007] The purpose of this utility model is to solve at least one of the technical problems existing in the prior art, and to provide a mobile chassis for remote-controlled commercial mobile devices, which can solve the problems of high cost of replacing casters, reliance on manual operation, inconvenience of operation and great safety hazards.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a mobile chassis for a remote-controlled commercial mobile device, comprising a frame, a remote controller, and a signal converter, characterized in that: eight connecting pieces symmetrically distributed on the left and right sides are fixedly connected to the bottom of the frame by bolts, a connecting shaft is fixedly connected to each connecting piece, a shock-absorbing mechanism is fixedly connected between two adjacent connecting pieces, and a transmission rod is connected below the shock-absorbing mechanism;

[0009] A drive motor is installed between the two transmission rods at the rear end, and the output end of the drive motor is fixedly connected to the rear transmission rod to drive the rear solid wheel to rotate; a steering mechanism is fixedly connected to the front end of the frame, and the output ends of the steering mechanism are connected to the front solid wheel;

[0010] The signal converter is located in the lower center of the frame, and is connected to the drive motor through interface one and to the control system through interface two; the remote controller is located on the outside of the frame and includes a joystick one for controlling forward and backward movement and a joystick two for controlling left and right turning.

[0011] Preferably, the remote control also includes a symmetrically arranged left turn switch and a right turn switch, which together with the joystick form a redundant steering control structure.

[0012] Preferably, the remote control integrates a display screen, a power switch, a power indicator, and an antenna. The display screen is used to display device operating parameters, and the antenna is used to enhance remote control signal transmission.

[0013] Preferably, the signal converter includes a dual-channel signal processing module, wherein one interface outputs a PWM control signal to the drive motor, and the other interface outputs a CAN bus signal to the control system to achieve data interaction.

[0014] Preferably, the shock absorption mechanism includes multiple elastic elements, specifically a helical spring fixedly connected to the connecting member and a hydraulic damper connected to the transmission rod. The two work together to form a three-stage buffer structure, and the natural frequency of the shock absorption mechanism forms a vibration isolation range with the vibration frequency of the commercial equipment carried by the table panel.

[0015] Preferably, the steering mechanism adopts a worm gear transmission structure, with its input end connected to the stepper motor at the output end of the control system, and its output end connected to the front solid wheel through a ball joint to achieve steering adjustment.

[0016] Preferably, the drive motor has a dual-shaft output structure, with its two output shafts respectively connected to two transmission rods at the rear end to form a synchronous drive system; the solid wheel adopts a polyurethane coated structure, with anti-slip texture on its surface and a friction coefficient ≥0.6.

[0017] Preferably, a tabletop is fixedly installed on the upper end of the frame. The tabletop adopts a multi-layer composite structure, with a high-density fiberboard base, a PVC veneer on the surface, and aluminum alloy edging around the edges. Its load-bearing capacity is ≥500kg.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] This remote-controlled commercial mobile device uses a chassis with solid wheels instead of ordinary casters. Combined with bolt-fixed connectors and a transmission structure, it reduces maintenance needs due to component aging or damage. The solid wheels have a lifespan of 3-5 years, 6-10 times that of ordinary casters, significantly extending the equipment's lifespan and reducing long-term operating costs. Calculations show that using this mobile chassis can reduce annual maintenance costs by approximately 800 yuan.

[0020] This remote-controlled commercial mobile vehicle uses a mobile chassis and achieves contactless control through a remote control system. Combined with a redundant design of joysticks and steering switches, operators can flexibly control the direction of movement. On a 5° slope, the mobile vehicle can travel stably at a speed of approximately 2 km / h, avoiding the operational limitations of manual pushing or dedicated driving. Its stable movement, especially on slopes, reduces safety hazards.

[0021] This remote-controlled commercial mobile device uses a mobile chassis and a dual-channel processing module for the signal converter to output PWM control signals and CAN bus signals respectively, achieving precise coordination between the drive motor and the control system. The response time of the PWM control signal is ≤10ms, and the transmission delay of the CAN bus signal is ≤5ms, ensuring timely command transmission and accurate action execution, thus improving the control precision of the mobile device. In straight-line driving tests, the deviation of the mobile device over a distance of 10m is ≤5cm.

[0022] This remote-controlled commercial mobile unit uses a mobile chassis and a shock-absorbing mechanism composed of multi-stage elastic elements to form a vibration-damping zone, which can effectively buffer bumps during movement. When traveling on uneven roads, the vibration acceleration on the platform is ≤0.5g, reducing the vibration impact on the commercial equipment on the platform and ensuring the stable operation of the equipment during movement.

[0023] This remote-controlled mobile commercial unit uses a mobile chassis with a composite structure design for its platform, providing excellent load-bearing capacity and stability. Even under full load, the platform will not exhibit significant deformation or wobbling, offering a stable installation platform for commercial equipment and expanding the applicability of the mobile unit.

[0024] This remote-controlled mobile commercial vehicle uses a mobile chassis, and the drive motor of the chassis adopts a DC brushless motor, which has advantages such as high efficiency, long life and low noise compared with traditional brushed motors. Its efficiency can reach over 85%, and the operating noise is ≤60dB, creating a quiet environment for commercial settings.

[0025] This remote-controlled commercial mobile device uses a mobile chassis. The signal converter on the chassis has excellent anti-interference capabilities and can operate stably even in complex electromagnetic environments. By employing differential signal transmission and filtering technology, it can effectively resist external electromagnetic interference, ensuring the reliability of signal transmission and enabling the mobile device to operate normally in complex electromagnetic environments such as shopping malls and plazas. Attached Figure Description

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0027] Figure 1 This is a schematic diagram of a remote-controlled commercial mobile chassis according to the present invention;

[0028] Figure 2 This is a top view schematic diagram of a remote-controlled commercial mobile chassis according to the present invention;

[0029] Figure 3 This is a schematic diagram of the controller in a remote-controlled commercial mobile chassis according to the present invention;

[0030] Figure 4 This utility model illustrates a signal converter in a mobile chassis for a remote-controlled commercial mobile device.

[0031] Reference numerals: 1. Frame; 2. Solid wheel; 3. Shock absorption mechanism; 4. Connecting shaft; 5. Connector; 6. Transmission rod; 7. Drive motor; 8. Steering mechanism; 9. Tabletop; 10. Remote control; 11. Display screen; 12. Joystick 1; 13. Power indicator; 14. Left turn switch; 15. Antenna; 16. Joystick 2; 17. Power switch; 18. Interface terminal 1; 19. Interface terminal 2; 20. Signal converter; 21. Right turn switch. Detailed Implementation

[0032] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0033] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0034] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0035] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0036] Please see Figure 1-4 This utility model provides a technical solution: a mobile chassis for a remote-controlled commercial mobile device includes a frame 1, a remote controller 10 and a signal converter 20. The remote controller 10 is located on the outside of the frame 1, and the signal converter 20 is located below the frame 1. Eight connectors 5 are fixedly connected to the bottom of the frame 1 by bolts, and they are symmetrical on the left and right. Each connector 5 is fixedly connected to a connecting shaft 4.

[0037] A shock-absorbing mechanism 3 is fixedly connected to each of the two adjacent connecting parts 5 at the front and rear. The connecting shaft 4 is fixedly connected to one end of the shock-absorbing component. A transmission rod 6 is fixedly connected below each shock-absorbing mechanism 3. A drive motor 7 is set between the two transmission rods 6 at the rear end. One end of each transmission rod 6 at the rear end is fixedly connected to the output end of the drive motor 7. A solid wheel 2 is fixedly connected to the other end of each transmission rod 6 at the rear end. The eight connecting parts 5 below the frame 1 are fixed to the frame 1 with bolts. The shock-absorbing mechanism 3 connected to them can effectively buffer the vibration caused by road bumps. With the stable connection between the connecting shaft 4 and the transmission rod 6, it ensures that the commercial equipment carried on the platform 9 maintains stable operation. In actual testing, when the moving body travels at a speed of 3km / h on a bumpy road, the vibration amplitude on the platform 9 can be reduced to less than 0.1mm.

[0038] A steering mechanism 8 is fixedly connected to the front end below the frame 1. The output ends of the steering mechanism 8 are fixedly connected to the same solid wheels 2. The steering angle range of the steering mechanism 8 is -30° to +30°, which can meet the steering needs in different scenarios. The minimum turning radius is 1.5m, which can also make flexible turns in narrow spaces.

[0039] A tabletop 9 is fixedly installed on the upper part of the frame 1. Various equipment can be installed on the tabletop 9 according to business needs. The edge of the tabletop 9 is provided with a 10mm high guard to prevent the equipment from slipping.

[0040] The signal converter 20 is fixedly installed in the middle of the lower part of the frame 1 by bolts. Interface terminal 18 and interface terminal 29 are fixedly connected to one side of the signal converter 20. Interface terminal 18 is located above interface terminal 29. Interface terminal 18 is fixedly connected to the drive motor 7, and interface terminal 29 is fixedly connected to the control system. After receiving the signal, the signal converter 20 processes and converts it, and then distributes the command through different interfaces. Interface terminal 18 transmits the processed signal to the drive motor 7, and interface terminal 29 transmits the signal to the control system. The control system coordinates the action of each component. The signal converter 20 has a very fast processing speed. The time interval from receiving the signal to issuing the command is ≤20ms, ensuring that the response of the moving body is rapid.

[0041] The remote control 10 is equipped with, from back to front, a display screen 11, a power switch 17, a first joystick 12, a second joystick 16, a power indicator 13, a left turn switch 14, a right turn switch 21, and an antenna 15. During startup, turning on the power switch 17 on the remote control 10 illuminates the power indicator 13, and the mobile device enters standby mode. At this time, the remote control 10 establishes a signal connection with the signal converter 20, and the display screen 11 can display the mobile device's operating status information in real time, such as battery level, speed, and steering angle. When the battery level drops below 20%, the display screen 11 will issue a low battery alarm to remind the operator to charge the battery promptly.

[0042] Joystick 12 and joystick 26 are symmetrical in structure. Joystick 12 controls forward and backward movement, while joystick 26 controls left and right movement. The operation feel of the joysticks has been optimized, with an operating force of 3N±0.5N and an operating stroke of 15mm. Operators can achieve precise control with slight operation.

[0043] Working principle: During the startup phase, the power switch 17 on the remote control 10 is turned on, the power light 13 lights up, and the mobile device enters the standby state. At this time, the remote control 10 establishes a signal connection with the signal converter 20, and the display screen 11 can display the running status information of the mobile device in real time. The remote control 10 and the signal converter 20 use a 2.4GHz wireless communication protocol, and the communication encryption method uses AES-128 encryption to ensure the security of signal transmission and prevent malicious interference or hijacking.

[0044] When the operator controls the device via remote control 10, the relevant command signals are transmitted through antenna 15. Signal converter 20 receives the signals, processes and converts them, and then distributes the commands through different interfaces. Interface 18 transmits the processed signals to drive motor 7, while interface 29 transmits the signals to the control system, which coordinates the actions of each component. The signal processing circuit inside signal converter 20 adopts a multi-stage filtering design, which can effectively filter out noise interference and ensure the purity of the signal.

[0045] In terms of movement control, when the joystick 12 is operated, the corresponding signal is transmitted to the drive motor 7 through the above process. The output end of the drive motor 7 drives the rear transmission rod 6 to rotate, which in turn drives the rear solid wheel 2 to rotate, realizing the forward and backward movement of the moving body. The operation amount of the joystick 12 is linearly related to the speed of the drive motor 7. The operator can precisely control the movement speed by controlling the tilt angle of the joystick 12, which is continuously adjustable from 0 to 5 km / h.

[0046] When the joystick 2 16 is operated, the signal is processed and transmitted to the steering mechanism 8. The output ends of the steering mechanism 8 drive the front solid wheel 2 to turn, realizing the left and right movement of the moving body. In addition, the left steering switch 14 and the right steering switch 21 can assist in controlling the steering action, further improving the flexibility of steering operation. When the joystick 2 16 and the steering switch are operated at the same time, the system will respond to the command of the steering switch first to ensure the safety of operation.

[0047] During the movement, the eight connecting parts 5 under the frame 1 are fixed to the frame 1 by bolts. The shock absorption mechanism 3 connected to it can effectively buffer the vibration caused by road bumps. With the stable connection between the connecting shaft 4 and the transmission rod 6, it ensures that the commercial equipment carried on the platform 9 maintains stable operation. The buffering effect of the shock absorption mechanism 3 can be automatically adjusted according to the load weight. When the load weight increases, the stiffness of the shock absorption mechanism 3 will increase accordingly to ensure good buffering performance.

[0048] The control system monitors the operating status of the moving body in real time. When it detects that the drive motor 7 is overloaded, the battery voltage is too low, or the steering mechanism 8 is abnormal, it will immediately issue an alarm signal and feed it back to the display screen 11 of the remote controller 10 through the signal converter 20. At the same time, it will take corresponding protective measures, such as reducing the speed of the drive motor 7 or stopping the movement, to ensure the safe operation of the equipment.

[0049] When the moving object needs to be stopped, the operator releases rocker arm 12 and rocker arm 2 16, and the drive motor 7 will immediately stop working. At the same time, the braking system will be activated, so that the moving object can be brought to a smooth stop within a short distance. The braking system adopts electromagnetic braking, with a response time of ≤0.5s, to ensure reliable stopping.

[0050] Structural Description:

[0051] Frame 1 and Connector 5: Eight connectors 5 are fixedly connected to the bottom of the frame 1 by bolts and are symmetrically distributed from left to right. The bolt connection ensures that the connectors 5 are firmly fixed to the frame 1 and avoids loosening. The symmetrical distribution from left to right makes the frame bear the force evenly, distributes the load, improves the overall structural stability, and provides reliable support for the upper platform 9 and the equipment.

[0052] Connector 5 and connecting shaft 4, shock absorber 3: Connector 5 is fixedly connected to connecting shaft 4, and shock absorber 3 is fixedly connected to each of the two adjacent connectors 5. Connector 4 is fixedly connected to one end of shock absorber. The fixed connection between connecting shaft 4 and shock absorber allows the vibration generated by road bumps to be transmitted to connector 5 through shock absorber, and then dispersed by the frame, reducing the direct transmission of vibration to the platform. Shock absorber 3 is connected to the frame through connector 5, which can effectively buffer road bumps. Combined with the stable connection between connecting shaft 4 and transmission rod 6, it ensures the smooth operation of commercial equipment on platform 9 (tests show that when traveling at 3km / h on a bumpy road, the vibration amplitude can be reduced to below 0.1mm). Furthermore, shock absorber 3 can automatically adjust its stiffness according to the load (stiffness increases when the weight increases), ensuring buffering performance under different loads.

[0053] Transmission rod 6, drive motor 7, and solid wheel 2: A transmission rod 6 is fixedly connected below the shock absorption mechanism 3. A drive motor 7 is located between the two transmission rods 6 at the rear end. Its output end is fixedly connected to one end of the rear transmission rod 6, and a solid wheel 2 is fixedly connected to the other end of the rear transmission rod 6. The drive motor 7 directly drives the solid wheel 2 through the transmission rod 6. The power transmission path is short and the loss is small, which improves the driving efficiency. The fixed connection between the transmission rod 6, the shock absorption mechanism 3, and the solid wheel 2 ensures stable power transmission and avoids slippage or deviation during movement. The rear solid wheel 2 serves as the drive wheel. With the linear control relationship between the drive motor 7 and the rocker arm 12 (the operation amount and the speed are linearly related), it can achieve precise speed control that is continuously adjustable from 0 to 5 km / h to meet the movement needs in different scenarios.

[0054] Steering mechanism 8 and front solid wheel 2: Steering mechanism 8 is fixedly connected to the front end of the frame 1. Solid wheels 2 are fixedly connected to the output ends of both ends of steering mechanism 8. Steering mechanism 8 directly drives front solid wheel 2 to turn, realizing left and right movement. Its steering angle range is -30° to +30°, and the minimum turning radius is 1.5m, which can meet the needs of flexible turning in narrow spaces. With the control of joystick 2 16 and left / right steering switch, the steering flexibility is improved, and the steering switch command is given priority response to ensure operation safety.

[0055] Tabletop 9: The tabletop 9 is fixedly installed on the upper part of the frame 1. The edge is provided with a 10mm high guard. The tabletop 9 provides an installation platform for commercial equipment to meet diverse commercial needs. The 10mm high guard can effectively prevent the equipment from slipping when moving or bumping, and improve the safety of the equipment placement.

[0056] Signal converter 20 and interface terminals: The signal converter 20 is fixed to the middle of the lower part of the frame 1 by bolts. One side is fixedly connected to interface terminal 18 (top) and interface terminal 2 19 (bottom). Interface terminal 18 is connected to the drive motor 7, and interface terminal 2 19 is connected to the control system. As the core of signal processing, the signal converter 20 can quickly distribute instructions after receiving remote control signals (response time ≤20ms) to ensure rapid movement of the moving body. The internal circuit with multi-level filtering design can filter noise to ensure signal purity. The dual interfaces are connected to the drive motor and the control system respectively to realize instruction classification and transmission and improve control accuracy.

[0057] Remote Controller 10 and its components: From back to front, the remote controller 10 is equipped with a display screen 11, a power switch 17, a joystick 12 (for forward and backward control), a joystick 2 16 (for left and right control), a power indicator 13, a left turn switch 14, a right turn switch 21, and an antenna 15. The joysticks have an operating force of 3N±0.5N and a travel of 15mm. The display screen 11 shows the battery level, speed, and other statuses in real time, and provides an alarm when the battery is low for easy monitoring by the operator. The power indicator 13 visually indicates the standby status. The optimized joystick operating force and travel allow the operator to achieve precise control with slight movements. The left / right turn switches assist in steering and improve operational flexibility. The antenna 15, combined with 2.4GHz wireless communication and AES-128 encryption, ensures secure signal transmission and anti-interference.

[0058] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various other modifications can be made without departing from the spirit of the present utility model.

Claims

1. A mobile chassis for a remote-controlled commercial mobile device, comprising a frame (1), a remote controller (10), and a signal converter (20), characterized in that: The frame (1) is fixedly connected to eight symmetrically distributed connectors (5) by bolts. Each connector (5) is fixedly connected to a connecting shaft (4). A shock-absorbing mechanism (3) is fixedly connected between two adjacent connectors (5). A transmission rod (6) is connected below the shock-absorbing mechanism (3). A drive motor (7) is provided between the two transmission rods (6) at the rear end. The output end of the drive motor (7) is fixedly connected to the transmission rod (6) at the rear end to drive the solid wheel (2) at the rear end to rotate. A steering mechanism (8) is fixedly connected to the front end of the frame (1). The output ends of the steering mechanism (8) at both ends are connected to the solid wheel (2) at the front end. The signal converter (20) is located in the middle of the lower part of the frame (1), and is connected to the drive motor (7) through interface one (18) and to the control system through interface two (19); the remote controller (10) is located on the outside of the frame (1), and includes a rocker arm one (12) for controlling forward and backward movement and a rocker arm two (16) for controlling left and right turning.

2. The mobile chassis for a remote-controlled commercial mobile device according to claim 1, characterized in that: The remote controller (10) also includes a left turn switch (14) and a right turn switch (21) arranged symmetrically. The left turn switch (14), the right turn switch (21) and the rocker arm (16) form a redundant steering control structure.

3. The mobile chassis for a remote-controlled commercial mobile device according to claim 2, characterized in that: The remote control (10) integrates a display screen (11), a power switch (17), a power light (13), and an antenna (15). The display screen (11) is used to display the device's operating parameters, and the antenna (15) is used to enhance the transmission of remote control signals.

4. The mobile chassis for a remote-controlled commercial mobile device according to claim 3, characterized in that: The signal converter (20) includes a dual-channel signal processing module, wherein interface one (18) outputs a PWM control signal to the drive motor (7), and interface two (19) outputs a CAN bus signal to the control system to realize data interaction.

5. A mobile chassis for a remote-controlled commercial mobile device according to claim 4, characterized in that: The shock absorption mechanism (3) includes multiple elastic elements, specifically a helical spring fixedly connected to the connector (5) and a hydraulic damper connected to the transmission rod (6). The two work together to form a three-level buffer structure, and the natural frequency of the shock absorption mechanism (3) and the vibration frequency of the commercial equipment carried by the tabletop (9) form a vibration isolation range.

6. A mobile chassis for a remote-controlled commercial mobile device according to claim 5, characterized in that: The steering mechanism (8) adopts a worm gear transmission structure. Its input end is connected to the stepper motor at the output end of the control system, and its output end is connected to the front solid wheel (2) through a ball joint to achieve steering adjustment.

7. A mobile chassis for a remote-controlled commercial mobile device according to claim 6, characterized in that: The drive motor (7) has a dual-shaft output structure, with its two output shafts connected to two transmission rods (6) at the rear end to form a synchronous drive system. The solid wheel (2) is made of polyurethane coated with anti-slip texture on its surface and has a friction coefficient ≥0.

6.

8. A mobile chassis for a remote-controlled commercial mobile device according to claim 7, characterized in that: The upper end of the frame (1) is fixedly installed with a table panel (9). The table panel (9) adopts a multi-layer composite structure, with a high-density fiberboard as the base layer, PVC veneer pasted on the surface, and aluminum alloy edging treatment around the perimeter. Its load-bearing capacity is ≥500kg.

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