Intelligent logistics vehicle

Abstract

The application relates to the technical field of trolleys, and discloses an intelligent logistics trolley, which comprises a trolley body, a pedal arranged at one end of the trolley body, a mounting seat arranged at one end of the trolley body, a limiting switch and multiple limiting gears arranged in the mounting seat, the limiting switch being arranged on one side of the limiting gears, a handrail connecting part movably arranged in the mounting seat, a handrail arranged at one end of the handrail connecting part, a push piece arranged on the left side and the right side of the handrail, and a control switch for controlling the movement of the trolley body arranged on each push piece, a controller, and the limiting switch and the control switch being electrically connected with the controller; the movable handrail connecting part can be moved to each limiting gear to switch the position of the handrail; when the handrail connecting part is moved to the limiting gear and triggers the limiting switch, the controller controls the control switch to switch the movement control mode of the trolley body. The intelligent logistics trolley is not limited to the storage state and the pushing state, and can realize simultaneous carrying of people and goods. The operation control mode of the logistics trolley is switched when the limiting switch is triggered, so that the use is convenient.

Description

Technical Field

[0001] This invention relates to the field of material handling vehicle technology, and in particular to an intelligent logistics vehicle. Background Technology

[0002] Traditional logistics and warehousing industries mainly rely on manual labor to move goods. However, manual handling is time-consuming, labor-intensive, inefficient, and physically demanding, especially when moving heavy goods, which greatly increases labor costs.

[0003] With the rapid development of the logistics industry, logistics handling equipment has also evolved. Logistics handling vehicles, hereinafter referred to as logistics vehicles, are a type of logistics handling equipment used for transporting goods. Currently, existing logistics vehicles generally consist of handrails and a base, with the base's movement controlled by manipulating the handrails. However, existing handrails can only be in a push-operated or folded state, switching between the two modes simultaneously, making it impossible to simultaneously carry both people and goods. Furthermore, the control method for the logistics vehicle is limited, making it inconvenient to use. Summary of the Invention

[0004] The purpose of this invention is to provide an intelligent logistics vehicle to solve the problems that existing logistics vehicles cannot simultaneously carry both people and goods, and that the control methods for logistics vehicles are limited.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] The intelligent logistics vehicle of the present invention includes:

[0007] The vehicle body has a pedal at one end;

[0008] A mounting base is installed at one end of the vehicle body. The mounting base is provided with a limit switch and multiple limit positions. The limit switch is located on one side of one of the limit positions.

[0009] The armrest connection is movably installed in the mounting base. One end of the armrest connection is provided with an armrest. The left and right sides of the armrest are each provided with a lever. Each lever is connected to a control switch for controlling the movement of the vehicle body.

[0010] The controller, the limit switch, and the control switch are respectively electrically connected to the controller;

[0011] The handrail connecting part can be moved to each of the limit positions to switch the position of the handrail; when the handrail connecting part moves to the limit position and triggers the limit switch, the controller controls the control switch to switch the motion control mode of the vehicle body.

[0012] Preferably, there are three limit positions, namely a storage position, a passenger position, and a push position. The limit switch is located on one side of the push position, and the limit switch is triggered when the handrail connecting part moves to the push position.

[0013] Preferably, the vehicle body is equipped with a motor and a motor encoder, the motor is used to drive the vehicle body to move, and the motor encoder and the motor are electrically connected to the controller.

[0014] Preferably, the upper surface of the handrail is provided with a first emergency stop button, and the side of the handrail is provided with a second emergency stop button. The first emergency stop button and the second emergency stop button are respectively electrically connected to the controller.

[0015] Preferably, when the handrail connection triggers the limit switch, the controller controls the second emergency stop button to switch from a non-working state to a working state.

[0016] Preferably, the mounting base is provided with a mounting groove, the groove wall of which is provided with a sliding groove and a plurality of limiting slots. The sliding groove extends along the length of the mounting groove, and the plurality of limiting slots are spaced apart along the length of the mounting groove. The handrail connecting part is installed in the mounting groove, and the handrail connecting part is provided with a pin. The pin is slidably assembled in the sliding groove, and the pin can be locked in each of the limiting slots during the sliding of the sliding groove to switch the limiting position.

[0017] Preferably, the armrest connecting portion includes:

[0018] Connect the main body and install it in the mounting slot;

[0019] Connecting rod, connecting the handrail to the connecting body;

[0020] The control lever is slidably mounted in the connecting body, and the pin is fixed to the end of the control lever. Sliding the control lever can switch the position of the pin in the slide groove or the limiting slot.

[0021] Preferably, the armrest connection further includes an elastic element disposed inside the control lever, the elastic element connecting the pin and the connection body to reset the pin.

[0022] Preferably, the mounting base is located at the middle of the end of the vehicle body, and a pedal is provided on each side of the mounting base.

[0023] Preferably, the vehicle body includes a chassis and a plurality of movable wheels, the plurality of movable wheels being rotatably mounted under the chassis, and the pedal being located on one side of the chassis.

[0024] Compared with the prior art, the intelligent logistics vehicle of this invention has the following advantages:

[0025] The intelligent logistics vehicle of this invention features a limit switch and multiple limit positions within its mounting base. The movable handrail connector moves to each limit position, adjusting the handrail's position and allowing it to switch between multiple states, not just the folded and pushable states. The vehicle body has a footboard for standing; switching the limit positions allows the handrail position to match the user's standing position, enabling simultaneous passenger and cargo transport. Furthermore, when the handrail connector moves to a limit position and triggers the limit switch, the controller activates a built-in control switch on the handrail to switch the vehicle's motion control mode. When the handrail connector is in passenger / cargo transport mode, the user stands on the footboard and manipulates the handrail. Moving the lever on the left side controls the left-side motor, and moving the lever on the right side controls the right-side motor. By individually controlling the starting, output speed, and direction of the two motors, the vehicle can move forward, backward, turn, and rotate in place. When the limit switch is triggered at the handrail connection, both the left and right handrail levers are activated, resulting in unified control of the motors on both sides of the vehicle. This allows for easy one-handed operation of the handrail while pushing the vehicle. This invention facilitates use by switching the control mode of the logistics vehicle when the limit switch is triggered. Attached Figure Description

[0026] Figure 1 This is a structural schematic diagram of the intelligent logistics vehicle described in an embodiment of the present invention;

[0027] Figure 2 yes Figure 1 A magnified view of part A in the diagram;

[0028] Figure 3 This is a top view schematic diagram of the intelligent logistics vehicle described in an embodiment of the present invention;

[0029] Figure 4 yes Figure 3 BB-direction sectional view in the middle;

[0030] Figure 5 yes Figure 4 Enlarged layout diagram of section C;

[0031] Figure 6 This is a schematic diagram of the armrest being in the stowed position in an embodiment of the present invention;

[0032] Figure 7 This is a schematic diagram of the handrail in the passenger-carrying position in an embodiment of the present invention;

[0033] Figure 8 This is a schematic diagram of the armrest being in the push position in an embodiment of the present invention;

[0034] In the diagram, 1. Vehicle body; 11. Chassis; 111. Pedal; 12. Caster wheel; 2. Mounting base; 201. Limit switch; 21. Mounting groove; 22. Slide groove; 23. Limiting slot; 3. Handrail connecting part; 31. Pin; 32. Connecting body; 321. Connecting shaft; 33. Connecting rod; 34. Control lever; 35. Elastic element; 4. Handrail; 41. First emergency stop button; 42. Second emergency stop button; 5. Paddle shifter. Detailed Implementation

[0035] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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 the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 invention based on the specific circumstances.

[0037] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0038] like Figures 1-8As shown in the figure, an intelligent logistics vehicle according to an embodiment of the present invention includes a vehicle body 1, a mounting base 2, a handrail connecting part 3, and a controller. One end of the vehicle body 1 is provided with a footrest 111 for a person to stand on, and the vehicle body 1 is driven by a motor. The mounting base 2 is installed at the end of the vehicle body 1 where the footrest 111 is located. The mounting base 2 is provided with a limit switch 201 and multiple limit positions. The limit switch 201 is located on one side of one of the limit positions, and the multiple limit positions are spaced apart. The handrail connecting part 3 is movably installed in the mounting base 2. One end of the handrail connecting part 3 is provided with a handrail 4. The left and right sides of the handrail 4 are each provided with a lever 5, and each lever 5 is connected to a control switch for controlling the movement of the vehicle body 1. The limit switch 201 and the control switch are electrically connected to the controller. Moving the handrail connecting part 3 allows it to move to each of the limit positions, thereby switching the position of the handrail 4. This allows the handrail 4 to switch between multiple position states, not just limited to a stowed state and a push state. The vehicle body 1 is equipped with a footboard 111 for standing. By switching the limit position, the position of the handrail can be adapted to the standing position of the person, so that people and goods can be carried at the same time. When the handrail connecting part 3 moves to the limit position and triggers the limit switch 201, the controller controls the control switch built into the handrail to switch the motion control mode of the vehicle body 1.

[0039] When the handrail connection 3 is in the passenger / cargo carrying state, the person stands on the pedal 111 and operates the handrail 4 with both hands. At this time, moving the left-side lever 5 of the handrail 4 controls the left-side motor of the vehicle body 1, and moving the right-side lever 5 controls the right-side motor of the vehicle body 1. By individually controlling the start, output speed, and direction of the two motors, the entire machine can move forward, backward, turn, and rotate in place. When the handrail connection 3 triggers the limit switch 201, both the left and right levers of the handrail 4 are controlled uniformly, allowing a single lever to control both motors, making it convenient for the person to operate the handrail 4 with one hand while pushing the vehicle.

[0040] This invention facilitates use by switching the operation and control mode of the logistics vehicle when the limit switch 201 is triggered. Furthermore, this invention is lightweight and easy to store.

[0041] In this embodiment, as Figures 1-5As shown, the vehicle has three limit positions: a storage position, a passenger position, and a push position. When the armrest connector 3 is in the storage position, the armrest connector 3 and the handrail 4 are folded onto the vehicle body 1. When the armrest connector 3 is in the passenger position, the position of the armrest connector 3 and the handrail is convenient for a person to stand on the pedal 111 to operate the vehicle. When the armrest connector 3 is in the push position, the position of the armrest connector 3 and the handrail 4 is convenient for a person to push the vehicle body 1 from outside the vehicle. The limit switch 201 is located on one side of the push position. When the armrest connector 3 moves to the push position, the limit switch 201 is triggered, so that the movement control method of the vehicle body 1 when the person is standing on the pedal 111 is different from the movement control method of the person pushing the vehicle body 1, making it more convenient for the operator to operate the movement of the vehicle body 1. Specifically, when the operator stands on the pedal 111, he can operate the handrail 4 with both hands, move the left paddle 5 to control the left motor, and move the right paddle 5 to control the right motor; when the operator pushes the vehicle body 1, he can operate the handrail 4 with one hand, and move the left paddle 5 or the right paddle 5 to control both motors in a unified manner, so as to facilitate the operator to operate the movement of the vehicle body 1.

[0042] In this embodiment, the vehicle body 1 is equipped with a motor and a motor encoder. The motor drives the vehicle body 1 to move and is connected to the moving wheels 12 of the vehicle body 1. The motor encoder and the motor are electrically connected to the controller. The motor encoder receives signals from external forces that push the vehicle body 1 to rotate and feeds the signals back to the controller. The controller controls the motor to operate according to the feedback signals from the motor encoder, so that the motor's driving motion on the vehicle body 1 assists the external force in pushing the vehicle body 1 to move. This allows the operator to provide only a small force to push the vehicle body 1, and the vehicle body 1 can move forward with the assistance of the motor. Under this condition, the speed at which the motor drives the vehicle body 1 is less than a set threshold, so that the vehicle body 1 dynamically matches the operator's forward speed, avoiding the situation where the speed at which the motor drives the vehicle body 1 exceeds the speed at which the external force pushes, and preventing the operator from being unable to keep up with the vehicle body 1. Furthermore, the armrest 4 is equipped with a control switching button. In the push position, the motion control mode of the vehicle body 1 can be switched by controlling the switching button. For example, it can be switched from the paddle control mode to the motor encoder and motor cooperative control mode, or from the motor encoder and motor cooperative control mode to the paddle control mode.

[0043] The motors include a left motor located on the left side of the vehicle body and a right motor located on the right side of the vehicle body. In the motor encoder and motor coordinated control mode, the controller performs unified control of the left and right motors based on the feedback signal from the motor encoder. In the paddle 5 control mode, when the limit switch 201 is not triggered in the passenger-carrying gear, moving the left paddle 5 controls the left motor to run, and moving the right paddle 5 controls the right motor to run. Releasing the paddle 5 stops the corresponding motor. When the limit switch 201 is triggered in the push gear, either the left paddle 5 or the right paddle 5 performs unified control of the left and right motors.

[0044] In this embodiment, as Figure 2 As shown, a first emergency stop button 41 is provided on the upper surface of the handrail 4, and a second emergency stop button 42 is provided on the side of the handrail 4. The first emergency stop button 41 and the second emergency stop button 42 are electrically connected to the controller. The first emergency stop button 41 and the second emergency stop button 42 are both safety protection measures. In an emergency, by pressing the first emergency stop button 41 or the second emergency stop button 42, the controller controls the vehicle body 1 to stop moving.

[0045] Furthermore, when the handrail connecting part 3 triggers the limit switch 201, the controller controls the second emergency stop button 42 to switch from a non-working state to a working state. When the handrail connecting part 3 is in the push position and triggers the limit switch 201, the second emergency stop button 42 switches to the working state, making it convenient for the operator to press the side-mounted second emergency stop button 42 for emergency stopping. When the handrail connecting part 3 is in the folding position or the passenger position and the limit switch 201 is not triggered, the second emergency stop button 42 is in a non-working state, preventing the person standing on the pedal 111 from accidentally touching the second emergency stop button 42 and causing unnecessary emergency stopping.

[0046] In this embodiment, as Figure 5 As shown, the mounting base 2 is provided with a mounting groove 21. The groove wall of the mounting groove 21 is provided with a sliding groove 22 and multiple limiting slots 23. The length direction of the sliding groove 22 extends along the length direction of the mounting groove 21. The multiple limiting slots 23 are spaced apart along the length direction of the mounting groove 21. The handrail connecting part 3 is installed in the mounting groove 21. The handrail connecting part 3 is provided with a pin 31. The pin 31 is slidably assembled in the sliding groove 22. During the sliding process of the pin 31 along the sliding groove 22, it can be locked in each of the limiting slots 23 to switch the limiting positions. In this embodiment, the sliding groove 22 is arc-shaped, and each groove wall is provided with three limiting slots 23. The three limiting slots 23 are spaced apart along the arc length direction. The limiting slot 23 on the left corresponds to the storage position, the limiting slot 23 in the middle corresponds to the passenger position, and the limiting slot 23 on the right corresponds to the push position.

[0047] Optionally, the mounting base 2 includes a first mounting plate and a second mounting plate, the first mounting plate being parallel to and spaced apart from the second mounting plate, the gap between the first and second mounting plates forming a mounting groove 21, and both the first and second mounting plates having a sliding groove 22 and a limiting groove 23. Further, the mounting base 2 also includes a first cover covering the first mounting plate and a second cover covering the second mounting plate.

[0048] like Figure 5 As shown, the handrail connecting part 3 includes a connecting body 32, a connecting rod 33, and a control lever 34. The connecting body 32 is installed in the mounting groove 21; the connecting rod 33 connects the handrail 4 and the connecting body 32; the control lever 34 is slidably mounted in the connecting body 32, and the pin 31 is fixed to the end of the control lever 34. Sliding the control lever 34 can switch the position of the pin 31 in the sliding groove 22 or the limiting slot 23. The sliding direction of the control lever 34 is along the length direction of the control lever 34. The upper end of the control lever 34 extends upward and out of the outside of the connecting body 32. The pin 31 is fixed to the lower end of the control lever 34. Pressing the control lever 34 downward causes the pin 31 to disengage from the limiting slot 23 and enter the slide groove 22. Rotating the connecting body 32 allows the pin 31 to move along the slide groove 22. When the pin 31 moves to the position of the next limiting slot 23, the control lever 34 slides upward and allows the pin 31 to engage in the limiting slot 23, thereby fixing the handrail connecting part 3 in the corresponding limiting position.

[0049] Furthermore, the armrest connecting part 3 also includes an elastic element 35, disposed inside the operating lever 34. The elastic element 35 connects the pin 31 to the connecting body 32 to reset the pin 31, facilitating the automatic reset of the pin 31 within the slide groove 22 to the fixing position within the limiting slot 23. The elastic element 35 is a spring. One end of the spring is connected to the pin 31, and the other end of the spring is connected to the connecting body 32 via a connecting shaft 321. The connecting body 32 has a first waist-shaped groove, and the pin 31 passes through the first waist-shaped groove, allowing the pin 31 a certain amount of movement space to switch positions between the slide groove 22 and the limiting slot 23. The connecting shaft 321 is spaced above the pin 31 and is parallel to the pin 31. Both ends of the connecting shaft 321 are connected to the connecting body 32. The control lever 34 has a second waist-shaped groove. The end of the connecting shaft 321 passes through the second waist-shaped groove and is fixed to the connecting body 32 to prevent the connecting shaft 321 from interfering with the up and down sliding of the control lever 34.

[0050] In this embodiment, the groove wall of the slide 22 is arc-shaped, and three limiting slots 23 are respectively provided along the length of each groove wall of the slide 22, with the three limiting slots 23 corresponding to three limiting positions. When the pin 31 is placed in the limiting slot 23 on the left, the handrail 4 is in the storage position; when the pin 31 is placed in the limiting slot 23 in the middle, the handrail 4 is in the passenger-carrying position; when the pin 31 is placed in the limiting slot 23 on the right, the handrail 4 is in the pushing position.

[0051] In this embodiment, the mounting base 2 is located at the middle of the end of the vehicle body 1, and a foot pedal 111 is provided on each side of the mounting base 2 to facilitate standing with both feet.

[0052] In this embodiment, the vehicle body 1 includes a chassis 11 and multiple movable wheels 12. The multiple movable wheels 12 are rotatably mounted below the chassis 11, and the pedal 111 is located on one side of the chassis 11. Four movable wheels 12 are distributed at the four corners of the chassis 11. The left motor drives the left movable wheel 12 to move, the right motor drives the right movable wheel 12 to move, and the movable wheels 12 not connected to the motor are eight-inch omnidirectional wheels.

[0053] The working process of this invention is as follows:

[0054] like Figure 6 As shown, when not in use, the pin 31 of the armrest connecting part 3 is locked in the limiting slot 23 on the left side, and the armrest connecting part 3 and the armrest 4 are folded onto the chassis 11 of the vehicle body 1 for easy storage.

[0055] When using, such as Figure 7 As shown, pressing the control lever 34 causes the pin 31 connecting the main body 32 to disengage from the left limiting slot 23 and enter the slide groove 22, allowing the armrest connecting part 3 to slide within the mounting base 2. Lifting the connecting rod 33 causes the pin 31 to slide along the slide groove 22 to the middle limiting slot 23. Under the elastic action of the elastic element 35, the pin 31 springs back from the slide groove 22 to the middle limiting slot 23 and is fixed, switching the armrest 4 from the storage position to the passenger position. In this state, the operator can stand on the pedal 111 with both feet and control the left motor via the left control switch by operating the left lever 5. By operating the right lever 5, the right motor can be controlled via the right control switch. By controlling the start, output speed, and direction of both motors, the machine can move forward, backward, turn, and rotate in place. Releasing the lever 5 to reset it stops the corresponding motor.

[0056] like Figure 8As shown, when the control lever 34 is pressed and the handrail connecting part 3 is rotated to switch the position of the handrail 4 from the passenger position to the push position, the limit switch 201 is triggered. The controller switches the control switch to control the movement of the vehicle body 1 according to the feedback signal of the limit switch 201. At this time, the left paddle 5 can be turned to control the left motor and the right motor in a unified manner through the left control switch, and the right paddle 5 can be turned to control the left motor and the right motor in a unified manner through the right control switch, so that the operator can push the vehicle body 1 with one hand.

[0057] When shifting gears, the control mode of paddle 5 can be switched to a motor and motor encoder coordinated control mode. The motor encoder receives the signal that the external force is pushing the vehicle body 1 to rotate and feeds the signal back to the controller. The controller controls the left and right motors to operate according to the feedback signal from the motor encoder, so that the driving motion of the motors on the vehicle body 1 assists the external force to push the vehicle body 1 to move, and avoids the driving motion speed of the motors on the vehicle body 1 from exceeding the pushing speed of the external force.

[0058] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. An intelligent logistics vehicle, characterized in that, include: The vehicle body has a pedal at one end; A mounting base is installed at one end of the vehicle body. The mounting base is provided with a limit switch and multiple limit positions. The limit switch is located on one side of one of the limit positions. The armrest connection is movably installed in the mounting base. One end of the armrest connection is provided with an armrest. The left and right sides of the armrest are each provided with a lever. Each lever is connected to a control switch for controlling the movement of the vehicle body. The controller, the limit switch, and the control switch are respectively electrically connected to the controller; The handrail connecting part can be moved to each of the limit positions to switch the position of the handrail; when the handrail connecting part moves to the limit position and triggers the limit switch, the controller controls the control switch to switch the motion control mode of the vehicle body.

2. The intelligent logistics vehicle according to claim 1, characterized in that, The system has three limit positions, namely a storage position, a passenger position, and a push position. The limit switch is located on one side of the push position, and the limit switch is triggered when the handrail connecting part moves to the push position.

3. The intelligent logistics vehicle according to claim 1 or 2, characterized in that, The vehicle body is equipped with a motor and a motor encoder. The motor is used to drive the vehicle body to move. The motor encoder and the motor are electrically connected to the controller.

4. The intelligent logistics vehicle according to claim 1, characterized in that, The upper surface of the handrail is provided with a first emergency stop button, and the side of the handrail is provided with a second emergency stop button. The first emergency stop button and the second emergency stop button are respectively electrically connected to the controller.

5. The intelligent logistics vehicle according to claim 4, characterized in that, When the limit switch is triggered by the handrail connection, the controller controls the second emergency stop button to switch from a non-working state to a working state.

6. The intelligent logistics vehicle according to claim 1, characterized in that, The mounting base is provided with a mounting groove, the groove wall of which is provided with a sliding groove and a plurality of limiting slots. The sliding groove extends along the length of the mounting groove, and the plurality of limiting slots are spaced apart along the length of the mounting groove. The handrail connecting part is installed in the mounting groove, and the handrail connecting part is provided with a pin. The pin is slidably assembled in the sliding groove. During the sliding of the pin along the sliding groove, it can be locked in each of the limiting slots to switch the limiting position.

7. The intelligent logistics vehicle according to claim 6, characterized in that, The handrail connecting part includes: Connect the main body and install it in the mounting slot; Connecting rod, connecting the handrail to the connecting body; The control lever is slidably mounted in the connecting body, and the pin is fixed to the end of the control lever. Sliding the control lever can switch the position of the pin in the slide groove or the limiting slot.

8. The intelligent logistics vehicle according to claim 7, characterized in that, The armrest connection also includes an elastic element disposed inside the control lever. The elastic element connects the pin to the connection body to reset the pin.

9. The intelligent logistics vehicle according to claim 1, characterized in that, The mounting base is located at the middle of the end of the vehicle body, and a pedal is provided on each side of the mounting base.

10. The intelligent logistics vehicle according to claim 1, characterized in that, The vehicle body includes a chassis and multiple movable wheels, which are rotatably mounted under the chassis, and the pedal is located on one side of the chassis.

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