Automatic tracking line drawing machine

Abstract

The utility model discloses an automatic tracking line drawing machine which comprises a frame, a front wheel, a first rear wheel and a second rear wheel, the front wheel, the first rear wheel and the second rear wheel are arranged at the bottom of the frame, a first motor, a second motor, a tracking sensor, a printing ink box, a printing ink pump and a controller are further arranged on the frame, and the first motor is in transmission connection with the first rear wheel. The second motor is in transmission connection with the second rear wheel, an ink suction pipe and an ink outlet pipe are arranged on the ink pump, the end, away from the ink pump, of the ink suction pipe is connected with the ink box, the first motor, the second motor, the tracking sensor and the ink pump are all electrically connected with the controller, and a bristle layer is arranged on the tread of the second rear wheel. The end, away from the ink pump, of the ink outlet pipe extends to the position above the second rear wheel, and the tracking sensor is located in front of the second rear wheel. The automatic line drawing device well solves the problems that manual line drawing is labor-consuming and low in efficiency, line drawing in badminton, basketball and other places becomes easier, meanwhile, workers can be effectively prevented from inhaling harmful gas volatilized by printing ink, and the health of the workers is protected.

Description

Technical Field

[0001] The utility model relates to a line drawing device, in particular to an automatic tracking line drawing machine. Background Art

[0002] Currently, when marking lines on badminton and basketball courts, to ensure neat, straight lines, workers typically first paste two parallel strips of masking tape on the court. Then, they use a brush to evenly apply ink between the two strips. After the ink dries naturally, the tape is removed. Manual marking is labor-intensive and inefficient. Furthermore, workers draw close to the ground, inhaling large amounts of ink volatiles, which is detrimental to their health. Utility Model Content

[0003] The utility model provides an automatic tracking line drawing machine to solve the deficiencies of the prior art.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] An automatic tracking and marking machine includes a frame and a front wheel, a first rear wheel, and a second rear wheel arranged at the bottom of the frame. The frame is also provided with a first motor, a second motor, a tracking sensor, an ink tank, an ink pump and a controller. The first motor is transmission-connected to the first rear wheel, and the second motor is transmission-connected to the second rear wheel. The ink pump is provided with an ink suction tube and an ink outlet tube. The end of the ink suction tube away from the ink pump is connected to the ink tank. The first motor, the second motor, the tracking sensor, and the ink pump are all electrically connected to the controller. The tread of the second rear wheel is provided with a brush layer. The end of the ink outlet tube away from the ink pump extends above the second rear wheel. The tracking sensor is located in front of the second rear wheel.

[0006] In some embodiments, the automatic tracking line marking machine also includes an ink uniforming member located in front of the second rear wheel, the ink uniforming member includes a mounting plate, a first baffle, a second baffle and a bottom plate, the mounting plate is connected to the frame, the first baffle and the second baffle are fixedly connected to the mounting plate and are parallel to each other, the second rear wheel is located between the first baffle and the second baffle, the bottom plate is located between the first baffle and the second baffle and between the mounting plate and the second rear wheel, part of the edge of the baffle is connected to the mounting plate, the first baffle and the second baffle, and the remaining edge of the baffle is in contact with the bristle layer.

[0007] In some embodiments, the ink distribution member further includes a first wheel eyebrow and a second wheel eyebrow located between the first baffle and the second baffle, the first wheel eyebrow is connected to the first baffle, and the second wheel eyebrow is connected to the second baffle, and both the first wheel eyebrow and the second wheel eyebrow surround the second rear wheel and contact the bristle layer.

[0008] In some embodiments, the bottom plate and the rotation axis of the second rear wheel are located at the same height.

[0009] In some embodiments, the automatic tracking line marking machine further includes a first liquid level sensor electrically connected to the controller, and the first liquid level sensor is disposed between the first baffle and the second baffle and located above the bottom plate.

[0010] In some embodiments, the automatic tracking line marking machine further includes a battery pack mounted on the frame, and the battery pack is electrically connected to the first motor, the second motor, the controller, the tracking sensor, and the ink pump.

[0011] In some embodiments, the automatic tracking line marking machine also includes a remote control and a wireless transmission module. The wireless transmission module is arranged on the frame and electrically connected to the controller. The remote control has a built-in wireless receiving module that matches the wireless transmission module.

[0012] In some embodiments, a second liquid level sensor electrically connected to the controller is provided in the ink tank, and a liquid level indicator light is provided on the remote control.

[0013] In some embodiments, the front wheels are casters.

[0014] In some embodiments, a first encoder is connected to the first motor, and a second encoder is connected to the second motor. The first encoder and the second encoder respectively detect the rotation speeds of the first motor and the second motor and transmit the detected rotation speed information to the controller.

[0015] Compared with the existing technology, the automatic tracking and marking machine provided by the utility model can automatically track and draw lines along the path of the masking paper, and can adjust the drawing speed and realize automatic stopping of drawing lines, which effectively solves the problem of laborious and inefficient manual drawing lines. The automatic tracking and marking makes it easier to draw lines in badminton, basketball and other venues. At the same time, it avoids workers from working at close range, effectively prevents workers from inhaling harmful gases emitted by ink, and protects workers' health. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 and Figure 2 It is a three-dimensional diagram of an embodiment of the present utility model.

[0018] Figure 3 It is a right side view of an embodiment of the present utility model.

[0019] Figure 4 It is a three-dimensional diagram of the ink distribution member in the embodiment of the present utility model.

[0020] Figure 5 It is a front view of the ink distribution member in the embodiment of the present utility model.

[0021] Figure 6 yes Figure 5 Sectional view along line AA.

[0022] Figure 7 It is a front view of the second rear wheel in an embodiment of the present utility model.

[0023] Figure 8 It is a cross-sectional view of the second rear wheel in an embodiment of the present utility model.

[0024] Figure 9 This is a schematic diagram of power supply according to an embodiment of the present invention.

[0025] Figure 10 It is a schematic diagram of the control principle of an embodiment of the present utility model.

[0026] Figure 11 This is a schematic diagram of the second rear wheel of an embodiment of the present invention traveling along a tracking line.

[0027] Figure 12 It is a schematic diagram of the mobile app control terminal of an embodiment of the present utility model.

[0028] The following are the descriptions of the reference numerals:

[0029] In the figure: 1. Frame; 2. Front wheel; 3. First rear wheel; 4. Second rear wheel; 5. First motor; 501. First encoder; 6. Second motor; 601. Second encoder; 7. Tracking sensor; 8. Ink tank; 9. Ink pump; 10. Controller; 11. Ink suction tube; 12. Ink outlet tube; 13. Ink distribution member; 1301. Mounting plate; 1302. First baffle; 1303. Second baffle; 1304. Bottom plate; 1305. First wheel eyebrow; 1306. Second wheel eyebrow; 14. First liquid level sensor; 15. Battery pack; 16. Wireless transmitting module; 17. Wireless receiving module; 18. Second liquid level sensor; 19. Handheld rack; 20. Brush layer; 21. Remote control; 22. Masking tape. DETAILED DESCRIPTION

[0030] The following detailed description of the embodiments of the present application is provided in conjunction with the accompanying drawings and examples. The detailed description of the following examples and the accompanying drawings are intended to illustrate the principles of the present application, but are not intended to limit the scope of the present application. The present application may be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but rather includes all technical solutions within the scope of the claims.

[0031] The present application provides these embodiments to make this application thorough and complete, and to fully express the scope of this application to those skilled in the art. It should be noted that: unless otherwise specifically stated, the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values ​​set forth in these embodiments should be interpreted as merely exemplary, and not as limiting.

[0032] It should be noted that, in the description of this application, unless otherwise specified, "plurality" means greater than or equal to two; the terms "upper," "lower," "left," "right," "inner," "outer," and the like, indicating directions or positional relationships, are intended solely to facilitate the description of this application and simplify the description, and do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0033] In addition, the terms "first," "second," and similar terms used in this application do not denote any order, quantity, or importance, but are simply used to distinguish different parts. "Perpendicular" does not mean perpendicular in the strict sense, but rather means within the tolerance range. "Parallel" does not mean parallel in the strict sense, but rather means within the tolerance range. "Include" or "comprising" and similar terms mean that the elements preceding the word include the elements listed after the word, and do not exclude the possibility of other elements being included.

[0034] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections or indirect connections through an intermediary. A person of ordinary skill in the art will understand the specific meanings of the above terms in this application depending on the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intervening device between the specific device and the first or second device.

[0035] All terms used in this application have the same meaning as understood by one of ordinary skill in the art to which this application belongs, unless otherwise specifically defined. It should also be understood that terms defined in, for example, common dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology and should not be interpreted in an idealized or highly formal sense, unless explicitly defined as such herein.

[0036] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0037] See also Figures 1-12 As shown, the utility model provides an automatic tracking and marking machine, which includes a frame 1 and a front wheel 2, a first rear wheel 3, and a second rear wheel 4 arranged at the bottom of the frame 1. The frame 1 is also provided with a first motor 5, a second motor 6, a tracking sensor 7, an ink tank 8, an ink pump 9 and a controller 10.

[0038] The first motor 5 is in transmission connection with the first rear wheel 3, and the second motor 6 is in transmission connection with the second rear wheel 4. The first and second motors 5, 6 serve as the power sources of the automatic tracking and marking machine. The first motor 5 is used to drive the first rear wheel 3, and the second motor 6 is used to drive the second rear wheel 4. The ink pump 9 is equipped with an ink suction tube 11 and an ink discharge tube 12. The end of the ink suction tube 11 away from the ink pump 9 is connected to the ink tank 8. When the ink pump 9 is operating, ink in the ink tank 8 enters the ink pump 9 through the ink suction tube 11. The first motor 5, the second motor 6, the tracking sensor 7, and the ink pump 9 are all electrically connected to a controller 10. The tracking sensor 7 detects the masking tape 22 stuck on the ground and transmits the detected information to the controller 10. The controller 10 controls the speeds of the first and second motors 5, 6 based on the information detected by the tracking sensor 7. By setting the first and second motors 5, 6 at different speeds, the automatic tracking and marking machine can steer. The controller 10 also controls the start and stop of the ink pump 9. The tread of the second rear wheel 4 is provided with a brush layer 20 , the end of the ink outlet tube 12 away from the ink pump 9 extends above the second rear wheel 4 , and the tracking sensor 7 is located in front of the second rear wheel 4 .

[0039] Before using the automatic line-tracking marking machine to draw lines, it is first necessary to paste two inner and outer masking tapes 22 on the field. The color of the masking tapes 22 needs to be different from the color of the field. Then, ink is added to the ink box 8. Next, the automatic line-tracking marking machine is moved to the starting point of the line drawing so that the second rear wheel 4 presses on the two masking tapes 22 at the same time. After the above preparations are completed, the power of the automatic line-tracking marking machine is turned on. The automatic line-tracking marking machine uses one of the two masking tapes 22 as a tracking line and automatically moves according to the pasted masking tape 22.

[0040] The tracking sensor 7 in the present invention can be an infrared tracking sensor 7. The infrared emitter of the tracking sensor 7 emits infrared light downward, and the infrared light is received by the infrared receiver of the tracking sensor 7 after being reflected by the masking paper 22 or the ground. Since there is a difference in the intensity of the infrared light reflected by the masking paper 22 and the intensity of the infrared light reflected by the ground, the relative position of the tracking sensor 7 and the masking paper 22 can be obtained by analyzing the signal received by the infrared receiver of the tracking sensor 7.

[0041] During the movement of the automatic tracking and marking machine, the tracking sensor 7 identifies the tracking line on the ground in real time and converts the identified signal into an electrical signal and transmits it to the controller 10. The controller 10 performs corresponding logical judgment and processing on the electrical signal transmitted by the tracking sensor 7 and controls the rotation speed of the first motor 5 and the second motor 6, thereby adjusting the moving direction of the automatic tracking and marking machine in real time so that the second rear wheel 4 can always press on the two masking tapes 22; the ink pump 9 pumps the ink in the ink tank 8 to the top of the second rear wheel 4, and then the ink drips under the action of gravity and adheres to the bristle layer 20. As the second rear wheel 4 rolls, the ink is smeared on the ground between the two masking tapes 22. Figure 11 As shown, the direction indicated by the arrow in this figure is the forward direction of the second rear wheel 4, and the area passed by the second rear wheel 4 is smeared with ink.

[0042] The controller 10 in the present invention can be a single-chip microcomputer of the model STM32F103C8T6, and can realize logical control by programming or hard-wiring. When the automatic tracking and marking machine moves to the end of the tracking line and the tracking sensor 7 crosses the tracking line, the controller 10 will determine whether to turn. Then, based on the determination result, the controller 10 will provide different control signals to the first motor 5 and the second motor 6. By controlling the direction and speed of the first motor 5 and the second motor 6, the automatic tracking and marking machine can turn and adjust the speed according to the direction of the tracking line, thereby making the automatic tracking and marking machine move along the preset tracking line.

[0043] In the present invention, the automatic tracking line marking machine further comprises an ink spreading member 13, which is connected to the vehicle frame 1 and is located in front of the second rear wheel 4. The ink spreading member 13 is used to make the ink evenly adhere to the surface of the bristle layer 20. Figures 4 to 6As shown, the aforementioned ink distribution member 13 includes an integrally formed mounting plate 1301, a first baffle 1302, a second baffle 1303 and a bottom plate 1304. The mounting plate 1301 is vertically arranged and detachably connected to the vehicle frame 1 through fasteners. The first baffle 1302 and the second baffle 1303 are both fixedly connected to the mounting plate 1301 and are parallel to each other. The distance between the first baffle 1302 and the second baffle 1303 is slightly larger than the width of the second rear wheel 4. The second rear wheel 4 is located between the first baffle 1302 and the second baffle 1303. The bottom plate 1304 is located between the first baffle 1302 and the second baffle 1303 and between the mounting plate 1301 and the second rear wheel 4. Part of the edge of the bottom plate 1304 is connected to the mounting plate 1301, the first baffle 1302 and the second baffle 1303, and the remaining edge of the bottom plate 1304 is in contact with the bristle layer 20. Figure 1 As shown, the mounting plate 1301, the first baffle 1302, the second baffle 1303, the bottom plate 1304 and the bristle layer 20 define a groove for accommodating ink and located in front of the second rear wheel 4 (located at Figure 1 The ink flowing out from the end of the ink outlet tube 12 drips onto the bristle layer 20. When the second rear wheel 4 rotates forward, the ink gathers in the aforementioned groove, which helps to make the ink evenly adhere to the surface of the bristle layer 20, thereby improving the drawing effect of the automatic tracking line drawing machine.

[0044] It should be noted that the bristles on the bristle layer 20 have a sufficient density of soft bristles to allow ink to penetrate into the pores between the bristles. The pressure between the edge of the bottom plate 1304 and the bristle layer 20 should not be too strong to prevent the bottom plate 1304 from completely scraping off the ink attached to the bristle layer 20 when the second rear wheel 4 rotates. In addition, the liquid applied to the court by the automatic line marking machine is not limited to ink, but can also be other liquids such as paint. The use of the automatic line marking machine is not limited to marking lines on sports fields, but can also be used to perform line marking tasks on places such as roads.

[0045] See also Figure 4 As shown, the ink distribution member 13 further includes a first wheel brow 1305 and a second wheel brow 1306 located between the first baffle 1302 and the second baffle 1303. The first wheel brow 1305 is connected to the first baffle 1302, and the second wheel brow 1306 is connected to the second baffle 1303. The first wheel brow 1305 and the second wheel brow 1306 both surround the second rear wheel 4 and contact the bristle layer 20. The first wheel brow 1305 and the second wheel brow 1306 can prevent ink from flowing to the side of the second rear wheel 4, thereby preventing ink from dripping from the side of the second rear wheel 4 onto the masking paper 22, which helps to reduce ink waste.

[0046] In the present invention, the bottom plate 1304 and the rotation axis of the second rear wheel 4 are located at the same height, which can ensure that the groove for accommodating ink has sufficient depth, thereby preventing the ink from overflowing from the groove.

[0047] In the present invention, the automatic line drawing machine further includes a first liquid level sensor 14 electrically connected to the controller 10. The first liquid level sensor 14 is disposed between the first baffle 1302 and the second baffle 1303 and above the bottom plate 1304. The first liquid level sensor 14 is used to monitor the ink level within the groove in real time. When the ink level within the groove is low, the controller 10 controls the ink pump 9 to start replenishing ink above the second rear wheel 4, thereby ensuring that a sufficient amount of ink adheres to the bristle layer 20 and thereby improving the line drawing effect. When the ink level within the groove is high, the controller 10 can also suspend the ink pump 9 to prevent ink overflow.

[0048] In the present invention, the automatic line-tracking marking machine further includes a battery pack 15 mounted on the frame 1. The battery pack 15 can be a rechargeable battery. The battery pack 15 is electrically connected to the first motor 5, the second motor 6, the controller 10, the tracking sensor 7, and the ink pump 9. The battery pack 15 supplies power to the electrical components of the automatic line-tracking marking machine. In some embodiments, the automatic line-tracking marking machine can also be powered by a wired connection, where the machine is connected to the mains via a cable.

[0049] In the present invention, the automatic line marking machine further includes a remote controller 21 and a wireless transmitter module 16. The wireless transmitter module 16 is mounted on the vehicle frame 1 and electrically connected to the controller 10. The remote controller 21 includes a built-in wireless receiver module 17 that matches the wireless transmitter module 16. The panel of the remote controller 21 is provided with various function buttons, such as a start / stop button, a travel speed adjustment button, and a power adjustment button for the ink pump 9. Workers can remotely control the automatic line marking machine via the remote controller 21, which not only makes it more convenient to use but also further reduces the harmful gases inhaled by workers during operation.

[0050] In specific implementation, the wireless transmitting module 16 can adopt a Bluetooth transmitting module, and the wireless receiving module 17 can adopt a Bluetooth receiving module. When the wireless transmitting module 16 adopts a Bluetooth transmitting module, the automatic tracking and marking machine can realize Bluetooth communication with the mobile phone, that is, the mobile phone is used as a remote control 21, and the control instructions are sent through the mobile phone APP. The Bluetooth receiving module on the automatic tracking and marking machine receives the control instructions, and then sends the control instructions to the controller 10 through the serial port communication. Finally, the controller 10 executes speed regulation, start, stop, forward, backward and other commands according to the control instructions. The mobile phone app control terminal is as follows Figure 12As shown in the figure, "03", "04", "06", "10", "13", and "20" are tracking speed control commands. The larger the value, the faster the automatic tracking line marking machine travels. "UP" is the command to control the automatic tracking line marking machine to move forward, "DOWN" is the command to control the automatic tracking line marking machine to move backward, "LEFT" is the command to control the automatic tracking line marking machine to turn left, and "RIGHT" is the command to control the automatic tracking line marking machine to turn right.

[0051] In the present invention, a second liquid level sensor 18 is provided within the ink tank 8 and is electrically connected to the controller 10. A liquid level indicator light is provided on the remote control 21. The second liquid level sensor 18 is used to monitor the ink level within the ink tank 8 in real time. The second liquid level sensor 18 transmits the monitored signal to the controller 10. When the liquid level within the ink tank 8 is too low, a control signal from the controller 10 is transmitted to the remote control 21 via the wireless transmitter module 16. The liquid level indicator light on the remote control 21 then displays the ink level within the ink tank 8. Figure 10 This is a schematic diagram of the control principle of the automatic tracking line drawing machine. The direction of the arrows in this figure represents the direction of signal transmission between various electrical components.

[0052] In the present invention, the front wheel 2 adopts a universal wheel, which is conducive to realizing the smooth steering of the automatic tracking line marking machine. The number of the front wheel 2 can be one or two. In order to facilitate the transportation of the automatic tracking line marking machine, an L-shaped carrying rack 19 can also be installed on the frame 1.

[0053] In the present invention, a first encoder 501 is connected to the first motor 5, and a second encoder 601 is connected to the second motor 6. The first encoder 501 and the second encoder 601 respectively detect the rotation speeds of the first motor 5 and the second motor 6 and transmit the detected rotation speed information to the controller 10, thereby monitoring the rotation speed and direction of the first motor 5 and the second motor 6. The encoder is a sensor that can measure the number of revolutions of the rear wheel. By measuring the number of revolutions of the rear wheel, the mileage of the automatic tracking line marking machine can be calculated. In addition, by calculating the number of revolutions of the rear wheel in one second and combining it with the radius of the rear wheel, the travel speed of the automatic tracking line marking machine can be calculated. The encoder in the present invention can adopt a Hall encoder, which is a rotary encoder that directly converts the angular displacement of the measured rear wheel into a high-speed pulse signal.

[0054] The automatic line-tracking marking machine provided by the utility model can automatically track and draw lines along the path of the masking paper 22, and can adjust the line-tracking speed and realize automatic line-drawing stop, which effectively solves the problem of laborious and inefficient manual line-drawing. The automatic line-tracking marking makes it easier to draw lines in venues such as badminton and basketball. At the same time, it avoids workers from working at close range, effectively prevents workers from inhaling harmful gases emitted by ink, and protects workers' health.

[0055] So far, the various embodiments of the present application have been described in detail. To avoid obscuring the concept of the present application, some details well known in the art have not been described. Based on the above description, those skilled in the art can fully understand how to implement the technical solutions disclosed herein.

[0056] Although some specific embodiments of the present application have been described in detail through examples, those skilled in the art will understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present application. Those skilled in the art will understand that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present application. In particular, as long as there are no structural conflicts, the various technical features mentioned in the various embodiments may be combined in any manner.

Claims

1. An automatic line marking machine, comprising a frame and a front wheel, a first rear wheel, and a second rear wheel arranged at the bottom of the frame, characterized in that: The frame is also provided with a first motor, a second motor, a tracking sensor, an ink tank, an ink pump and a controller. The first motor is transmission-connected to the first rear wheel, and the second motor is transmission-connected to the second rear wheel. The ink pump is provided with an ink suction tube and an ink outlet tube. The end of the ink suction tube away from the ink pump is connected to the ink tank. The first motor, the second motor, the tracking sensor and the ink pump are all electrically connected to the controller. The tread of the second rear wheel is provided with a brush layer. The end of the ink outlet tube away from the ink pump extends to above the second rear wheel. The tracking sensor is located in front of the second rear wheel.

2. The automatic line drawing machine according to claim 1, characterized in that: It also includes an ink uniforming member located in front of the second rear wheel, the ink uniforming member includes a mounting plate, a first baffle, a second baffle and a bottom plate, the mounting plate is connected to the frame, the first baffle and the second baffle are fixedly connected to the mounting plate and are parallel to each other, the second rear wheel is located between the first baffle and the second baffle, the bottom plate is located between the first baffle and the second baffle and between the mounting plate and the second rear wheel, part of the edge of the baffle is connected to the mounting plate, the first baffle and the second baffle, and the remaining edge of the baffle is in contact with the bristle layer.

3. The automatic line drawing machine according to claim 2, characterized in that: The ink distributing member also includes a first wheel arch and a second wheel arch located between the first baffle and the second baffle, the first wheel arch is connected to the first baffle, and the second wheel arch is connected to the second baffle. The first wheel arch and the second wheel arch both surround the second rear wheel and contact the bristle layer.

4. The automatic line drawing machine according to claim 2, characterized in that: The bottom plate and the rotation axis of the second rear wheel are located at the same height.

5. The automatic tracking line drawing machine according to claim 2, characterized in that: It also includes a first liquid level sensor electrically connected to the controller, wherein the first liquid level sensor is arranged between the first baffle and the second baffle and is located above the bottom plate.

6. The automatic line drawing machine according to any one of claims 1 to 5, characterized in that: It also includes a battery pack installed on the frame, and the battery pack is electrically connected to the first motor, the second motor, the controller, the tracking sensor, and the ink pump.

7. The automatic line drawing machine according to any one of claims 1 to 5, characterized in that: It also includes a remote controller and a wireless transmitting module. The wireless transmitting module is arranged on the vehicle frame and is electrically connected to the controller. The remote controller is equipped with a wireless receiving module that matches the wireless transmitting module.

8. The automatic line drawing machine according to claim 7, characterized in that: A second liquid level sensor electrically connected to the controller is provided in the ink box, and a liquid level indicator light is provided on the remote controller.

9. The automatic line drawing machine according to any one of claims 1 to 5, characterized in that: The front wheels are universal wheels.

10. The automatic tracking line drawing machine according to any one of claims 1 to 5, characterized in that: The first motor is connected to a first encoder, and the second motor is connected to a second encoder. The first encoder and the second encoder respectively detect the rotation speeds of the first motor and the second motor and transmit the detected rotation speed information to the controller.

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