Marking machine and method for hot-melt marking coating
By designing a marking machine with skateboard and extension arm structure, glass beads and paint are mixed and stored in the lines, solving the problem of short service life caused by the retention surface of glass beads, and achieving the long-term retention and reflective effect of glass beads.
Patent Information
- Application Number
- CN202510878621.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-27
- Publication Date
- 2025-08-29
AI Technical Summary
The glass beads of existing road marking machines are mainly retained on the surface of the paint lines, resulting in short service life and fast wear.
A marking machine for hot melt type marking coating is designed. By setting a skateboard and extension arm structure at the bottom of the hopper, the glass microbeads are mixed with the paint and stored in the paint lines. The coordinated action of the slide and the barrier plate is used to achieve synchronous opening and closing of the paint and the glass microbeads.
It improves the retention time of glass beads, ensuring that even if the surface of the paint lines is worn, glass beads still have a reflective effect inside and are easy to operate without step-by-step release.
Smart Images
Figure CN120556356A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of road marking, and in particular to a road marking machine and method for using hot-melt road marking paint. Background Art
[0002] The road marking machine is used to spray lines on the ground, which includes a paint spraying structure and a glass bead spraying structure.
[0003] The glass bead spraying structure of existing road marking machines is usually located behind the paint spraying structure, so that the glass beads fall onto the lines immediately after the paint spraying structure sprays the lines. However, most of the glass beads can only remain on the surface of the lines. As the surface of the edge strip is worn by the tires, the glass beads on the surface are quickly consumed, thus shortening the service life of the lines.
[0004] Therefore be necessary to provide a kind of new road marking machine and method that are used for thermoplastic road marking paint. Summary of the Invention
[0005] In view of the above problems existing in the prior art, an object of an embodiment of the present invention is to provide a road marking machine for hot-melt road marking paint, which can retain glass beads inside the paint lines and increase the retention time of the glass beads.
[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: a road marking machine for hot-melt road marking paint is provided, comprising a frame and a marking hopper, the marking hopper comprising a hopper, a material box, auxiliary wheels and a slide plate, the hopper is connected to the frame, the bottom of the hopper is provided with a marking opening connected to the inner cavity of the hopper, the material box is installed on the front side of the hopper, the bottom of the material box is provided with a drop opening connected to the inner cavity of the material box, the auxiliary wheel is swingably connected to the bottom of the material box through an extension arm, the slide plate is provided at the bottom of the hopper, and the slide plate and the hopper are slidably matched, a gate is provided on the slide plate and near the marking opening, and the extension arm deviates from the extension arm. A blocking plate is provided at the position of the swing axis of the extension arm, and the blocking plate is close to the drop opening on the material box, and the slide plate is connected to the extension arm. When the hopper moves up and drives the auxiliary wheel to leave the ground, the auxiliary wheel swings downward and drives the blocking plate to swing upward at the same time. The blocking plate swings up and finally rests on the drop opening to close the drop opening. The auxiliary wheel swings downward and pushes the slide plate to slide on the hopper to close the marked opening. When the hopper moves down and drives the auxiliary wheel to contact the ground, the auxiliary wheel swings upward and drives the blocking plate to swing downward at the same time. The blocking plate breaks away from the drop opening to open the drop opening. The auxiliary wheel swings upward and pulls the slide plate to slide on the hopper to open the marked opening.
[0007] The hopper has a bottom with a horizontal bottom wall, and the front side of the hopper has an inclined front side wall, the front side wall is adjacent to the bottom wall, the scored opening is located on the front side wall and close to the bottom wall, the slide comprises a first plate, a second plate and a third plate, the first plate and the second plate are not arranged coplanar, the third plate is connected between the first plate and the second plate, the first plate slides and is arranged parallel to the bottom wall of the hopper, the third plate is parallel to the front side wall, the gate is located on the first plate, and the second plate is located below the drop opening. When the slide moves from the material box to the hopper, the third plate can be disengaged from the front side wall, so that the scored opening is exposed and opened, and at the same time the gate on the first plate moves to the bottom of the front side wall, and the gate and the scored opening are in a state of relative position up and down.
[0008] Furthermore, the bottom of the material box is provided with adjacent bottom plate 1 and bottom plate 2, and the bottom plate 1 is closer to the hopper relative to the bottom plate 2. The bottom plate 1 and the bottom plate 2 are staggered in height to form the drop opening, and the drop opening faces the marked opening on the hopper.
[0009] Furthermore, a hinge axis is provided on the extension arm, and the hinge axis of the extension arm is hinged to the material box, the extension arm is sealed to the second bottom plate, and the second bottom plate is made of a flexible material.
[0010] Furthermore, the extension arm is provided with a traction portion, which is connected to the second plate body of the skateboard.
[0011] Furthermore, an elastic recovery structure is provided on the auxiliary wheel.
[0012] Furthermore, the surface of the second plate close to the material box is provided with a uniformly distributed groove, which extends from the material box toward the hopper. The second plate is provided with multiple uniformly distributed grooves, which are evenly and spaced apart along the width direction of the material box.
[0013] Furthermore, a barrel for storing paint is provided on the frame, a hopper is provided on one side of the frame, a discharge port is provided on the side of the barrel close to the hopper, and an opening communicating with the interior of the hopper is provided on the top of the hopper.
[0014] Furthermore, the hopper is movably connected to the frame, a cantilever is provided at the front end of the hopper, a connecting rod is provided at the front end of the frame corresponding to the cantilever, and the cantilever is hinged to the connecting rod.
[0015] The present invention also provides a method, which is applicable to any of the above-mentioned road marking machines for thermoplastic road marking paint, and comprises the following steps: S1. Lift the control lever to move the hopper upward and hang it on the frame, and at the same time, the auxiliary wheels are off the ground; S2. Inject a certain amount of road marking paint into the hopper and a certain amount of glass beads into the material box; S3. After moving the road marking machine to the waiting position, operate the joystick to lower the hopper to the ground. At the same time, the auxiliary wheel will also touch the ground. When the auxiliary wheel swings upward, it will open the marking port and the drop port at the same time, allowing the road marking paint and glass beads to fall to the ground through the gate, thus forming a marking line on the ground. As the road marking machine moves, the required shape is drawn on the ground. S4. After marking, operate the control lever to move the hopper upward and hang it on the frame. At the same time, the auxiliary wheel is separated from the ground. When the auxiliary wheel swings downward, the marking port and the drop port are closed.
[0016] The beneficial effects of the present invention are as follows: the present invention provides a road marking machine for hot-melt road marking paint, which mainly includes a frame and a marking hopper. The marking hopper includes a hopper, a material box, auxiliary wheels and a slide plate. The hopper is connected to the frame. The bottom of the hopper is provided with a marking port connected to the inner cavity of the hopper. Paint flows out through the marking port to mark the road on the ground. The material box is installed on the front side of the hopper. The inner cavity of the material box is used to accommodate glass beads. The bottom of the material box is provided with a drop port connected to the inner cavity of the material box. The auxiliary wheels are swingably connected to the bottom of the material box through an extension arm. The slide plate is arranged at the bottom of the hopper, and the slide plate and the hopper are slidably matched. A gate is provided on the slide plate near the marked opening. Moving the slide plate from the hopper to the material box can make the gate on the slide plate aligned and connected with the marked opening, or moving the slide plate from the material box to the hopper can make the gate on the slide plate misaligned with the marked opening and make the slide plate cover the marked opening. A blocking plate is provided on the extension arm at a position deviating from the swing axis of the extension arm. The blocking plate is close to the falling opening on the material box, and the slide plate is connected to the extension arm. When the hopper moves up and drives the auxiliary wheel off the ground, the auxiliary wheel moves downward The swinging simultaneously drives the blocking plate to swing upward, and the blocking plate swings up and finally abuts against the drop opening to close the drop opening. The auxiliary wheel swings downward and pushes the slide plate to slide on the hopper to close the marking opening. When the hopper moves downward and drives the auxiliary wheel to contact the ground, the auxiliary wheel swings upward and drives the blocking plate to swing downward, and the blocking plate breaks away from the drop opening to open the drop opening. The auxiliary wheel swings upward and pulls the slide plate to slide on the hopper to open the marking opening, thereby allowing paint to be discharged from the marking opening. At the same time, the glass beads mix with the paint flowing out of the marking opening and flow out of the gate. In this way, the glass beads are not only retained on the surface of the marking line, but also remain inside the paint line, thereby increasing the retention time of the glass beads. Even if the surface of the paint line is worn during subsequent use, some glass beads will remain inside the paint line to provide a reflective effect. In addition, the road marking machine provided by the embodiment of the present invention can realize the synchronous opening of the marking opening and the drop opening by lowering the hopper to the ground, or realize the synchronous closing of the marking opening and the drop opening by lifting the hopper, without the need to operate the release of paint and glass beads step by step. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The present invention will be further described below with reference to the accompanying drawings and examples.
[0018] Figure 1 A schematic three-dimensional diagram of a road marking machine and method for using thermoplastic road marking paint according to an embodiment of the present invention.
[0019] Figure 2 A schematic diagram of the three-dimensional structure of a marking bucket provided in an embodiment of the present invention.
[0020] Figure 3 This is an exploded view of the marking bucket provided in an embodiment of the present invention.
[0021] Figure 4 A schematic diagram of the three-dimensional structure of a material box provided in an embodiment of the present invention.
[0022] Figure 5 A schematic structural diagram of a contact wheel provided in an embodiment of the present invention.
[0023] Figure 6 A schematic diagram of the three-dimensional structure of a skateboard provided in an embodiment of the present invention.
[0024] Figure 7 A cross-sectional view of a marking bucket provided by an embodiment of the present invention in a first working state.
[0025] Figure 8 for Figure 7 A magnified schematic diagram of area A in the middle.
[0026] Figure 9 A cross-sectional view of the marking bucket provided by an embodiment of the present invention in a second working state.
[0027] Figure 10 for Figure 9 Schematic diagram of the enlarged area B.
[0028] Among them, the figure marks in the figure are: 1. frame; 11. material barrel; 111. material outlet; 12. walking wheel; 13. connecting rod; 2. marking bucket; 21. material hopper; 211. marking outlet; 212. front side wall; 213. bottom wall; 22. material box; 221. bottom plate one; 222. bottom plate two; 223. drop outlet; 23. auxiliary wheel; 231. extension arm; 232. hinge axis; 233. blocking plate; 235. traction part; 24. slide plate; 241. plate body one; 242. plate body two; 243. plate body three; 244. uniform distribution groove; 245. gate; 3. control lever; 4. cantilever. DETAILED DESCRIPTION
[0029] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.
[0030] It should be noted that when an element is referred to as being “connected to” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.
[0031] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and may encompass internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.
[0032] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention.
[0033] Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, when the phrases "in one embodiment," "in some embodiments," or "in some embodiments" appear in various places throughout this specification, not all references are to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
[0034] like Figure 1-10As shown, an embodiment of the present invention provides a road marking machine for thermoplastic road marking paint, which includes a frame 1 and a marking hopper 2. The marking hopper 2 includes a hopper 21, a material box 22, an auxiliary wheel 23 and a slide 24. The hopper 21 is connected to the frame 1. The bottom of the hopper 21 is provided with a marking port 211 connected to the inner cavity of the hopper. Paint flows out through the marking port 211 to mark the ground. The material box 22 is installed on the front side of the hopper 21. The inner cavity of the material box 22 is used to accommodate glass beads. The bottom of the material box 22 is provided with a drop port 223 connected to the inner cavity of the material box 22. The auxiliary wheel 23 is swingably connected to the bottom of the material box 22 through an extension arm 231. The slide 24 is arranged at the bottom of the hopper 21, and the slide 24 and the hopper 21 are slidably matched. A gate 245 is provided on the slide 24 and near the scored opening 211. By moving the slide 24 from the hopper 21 to the direction of the material box 22, the gate on the slide 24 can be aligned and connected with the scored opening 211, or by moving the slide 24 from the material box 22 to the direction of the hopper 21, the gate on the slide 24 can be misaligned with the scored opening 211 and the slide 24 can cover the scored opening 211. A blocking plate 233 is provided on the extension arm 231 at a position deviating from the swing axis of the extension arm 231. The blocking plate 233 is close to the drop opening 223 on the material box 22, and the slide 24 is connected to the extension arm 231. When the hopper 21 moves upward and drives the auxiliary wheel 23 off the ground, the auxiliary wheel 23 swings downward and drives the blocking plate 233 to swing upward. The blocking plate 233 swings upward and finally abuts against the drop opening 223 to close the drop opening 223. The auxiliary wheel 23 swings downward and pushes the slide plate 24 to slide on the hopper 21 to close the scored opening 211. When the hopper 21 moves downward and drives the auxiliary wheel 23 to contact the ground, the auxiliary wheel 23 swings upward and drives the blocking plate 233 to swing downward. The blocking plate 233 breaks away from the drop opening 223 to open the drop opening 223. The auxiliary wheel 23 swings upward and pulls the slide plate 24 to slide on the hopper 21 to open the scored opening 211, so that the paint is discharged from the scored opening 211. At the same time, the glass beads are mixed with the paint flowing out of the marking port 211 and then flow down from the gate 245. In this way, the glass beads not only remain on the surface of the marking line, but also exist inside the paint line, thereby increasing the retention time of the glass beads. Even if the surface of the paint line is worn during subsequent use, some glass beads will remain inside the paint line to play a reflective effect. In addition, the road marking machine provided by the embodiment of the present invention can realize the synchronous opening of the marking port 211 and the drop port 223 by lowering the hopper 21 to the ground, or realize the synchronous closing of the marking port 211 and the drop port 223 by lifting the hopper 21, without the need to release the paint and glass beads in steps.
[0035] like Figure 8 and Figure 10As shown, in some embodiments, the bottom of the hopper 21 is provided with a horizontal bottom wall 213, the front side of the hopper 21 is provided with an inclined front side wall 212, the front side wall 212 is adjacent to the bottom wall 213, the scored opening 211 is located on the front side wall 212 and close to the bottom wall 213, the slide plate 24 includes a plate body 1 241, a plate body 242 and a plate body 3 243, the plate body 1 241 and the plate body 2 242 are not arranged in the same plane, the plate body 3 243 is connected between the plate body 1 241 and the plate body 2 242, the plate body 1 241 is slidably and parallelly arranged on the bottom wall 213 of the hopper 21, the plate body 3 243 is parallel to the front side wall 212, the gate 245 is located on the plate body 1 241, and the plate body 2 242 is located on the lower side of the drop opening 223, as shown in FIG. Figure 7 and Figure 8 As shown, when the slide plate 24 moves from the material box 22 to the hopper 21, the plate body 243 can be placed against the front side wall 212 of the hopper 21, thereby shielding the scored opening 211 on the front side wall 212; Figure 9 and Figure 10 As shown, when the slide plate 24 moves from the hopper 21 to the material box 22, the plate body three 243 can be disengaged from the front side wall 212, so that the scored opening 211 is exposed and opened, and at the same time, the gate 245 on the plate body one 241 moves to the bottom of the front side wall 212, and the gate 245 and the scored opening 211 are in a state of relative position up and down, and because the plate body two 242 is located at the lower side of the drop port 223, the glass beads will fall onto the plate body two 242 when discharged from the drop port 223 and roll along the plate body two 242 to the gate 245, and the paint and glass beads will mix and fall at the gate 245.
[0036] like Figure 4 As shown, in some embodiments, the bottom of the material box 22 is provided with adjacent bottom plate 1 221 and bottom plate 2 222, and the bottom plate 1 221 is closer to the hopper 21 relative to the bottom plate 222, and the bottom plate 1 221 and the bottom plate 2 222 are staggered in height to form the drop opening 223, and can make the drop opening 223 face the scored opening 211 on the hopper 21, so that the glass beads falling from the drop opening 223 tend to roll towards the scored opening 211 under the action of inertia.
[0037] like Figure 5 As shown, in some embodiments, a hinge axis 232 is provided on the extension arm 231, and the hinge axis 232 of the extension arm 231 is hinged to the material box 22, and the extension arm 231 is sealed with the bottom plate 222. At the same time, the bottom plate 222 is made of a flexible material, so that the bottom plate 222 can move with the extension arm 231 as the extension arm 231 swings up and down. The bottom plate 222 is flexible and will not interfere with the swinging of the extension arm 231. At the same time, no matter how the position of the extension arm 231 changes, the bottom plate 222 can fit and seal with the extension arm 231.
[0038] like Figure 5 As shown, in some embodiments, a traction portion 235 is further provided on the extension arm 231, and the traction portion 235 is connected to the plate body 242 of the slide 24. When the extension arm 231 swings up and down, the traction portion 235 is driven to swing left and right, thereby closing the marking opening 211 when the traction slide 24 slides to the left, or opening the marking opening 211 when the traction slide 24 slides to the right.
[0039] In some embodiments, an elastic recovery structure (not shown) may be further provided on the auxiliary wheel 23. When the hopper 21 moves upward and drives the auxiliary wheel 23 off the ground, the downward swing of the auxiliary wheel 23 may be driven by the elastic recovery force of the elastic recovery structure to cause the auxiliary wheel 23 to swing downward, thereby preventing the extension arm 231 from encountering excessive resistance when swinging downward and being unable to swing downward smoothly by its own gravity. Specifically, the elastic recovery structure may be, but is not limited to, a torsion spring.
[0040] like Figure 6 As shown, in some embodiments, a uniform distribution groove 244 is provided on the surface of the plate body 242 close to the material box 22, and the uniform distribution groove 244 is extended from the material box 22 toward the hopper 21. The plate body 242 is provided with a plurality of uniform distribution grooves 244, and the plurality of uniform distribution grooves 244 are evenly and spaced apart along the width direction of the material box 22. Therefore, through the setting of the uniform distribution grooves 244, when the glass beads fall from the drop port 223 onto the plate body 242, the glass beads will enter the plurality of uniform distribution grooves 244 and be evenly distributed.
[0041] like Figure 1 As shown, in some embodiments, a barrel 11 for storing paint is provided on the frame 1, and a hopper 21 is provided on one side of the frame 1. A discharge port 111 is provided on the side of the barrel 11 close to the hopper 21, and the top of the hopper 21 has an opening connected to the interior of the hopper 21. The marking paint stored in the barrel 11 can flow out from the discharge port 111 and enter the hopper 21 through the opening of the hopper 21; specifically, in this embodiment, the barrel 11 is used to store and heat hot-melt marking paint.
[0042] like Figure 1 and Figure 2 As shown, in some embodiments, the hopper 21 is movably connected to the frame 1, so that the hopper 21 can at least swing up and down on the frame 1, so as to control the hopper 21 to move the marking opening 211 close to the ground for marking when it is lowered, and the hopper 21 can be lifted up to keep it away from the ground when it is not working. The road marking machine for hot-melt road marking paint provided in this embodiment also includes a joystick 3, one end of which is connected to the hopper 21.
[0043] It can be understood that in order to keep the hopper 21 in position when it is lifted, a suspension structure (not shown) is provided on the side of the control lever 3 close to the frame 1 and the side opposite to the frame 1, or a suspension structure (not shown) is provided on the side of the hopper 21 close to the frame 1 and the side opposite to the frame 1, so that the control lever 3 and the hopper 21 can be suspended and fixed on the frame 1 through the suspension structure. The connection structure can be composed of a hook and a matching hole. In order to facilitate the connection or disconnection of the hook and the hole, the hopper 21 is hinged to the frame 1 and can swing left and right relative to the frame 1, so that the hopper 21 and / or the control lever 3 can swing left and right to move the hook close to or away from the corresponding hole on the frame 1.
[0044] like Figure 1 and Figure 2 As shown, in some embodiments, a cantilever 4 is provided at the front end of the hopper 21, and a connecting rod 13 is provided at the front end of the vehicle frame 1 corresponding to the cantilever 4. The cantilever 4 is hingedly connected to the connecting rod 13, allowing the hopper 21 to swing freely on the connecting rod 13 of the vehicle frame 1 in various directions, such as up and down, left and right, etc. Thus, operating the control lever 3 can at least drive the hopper 21 to swing up and down around the connecting rod 13, so that the hopper 21 can be lifted off the ground when not in use, and lowered to the ground when marking is required.
[0045] like Figure 1 and Figure 3 As shown, in some embodiments, the frame 1 is provided with running wheels 12, which are used for rolling on the ground.
[0046] like Figure 1 and Figure 3 As shown, in some embodiments, the frame 1 is provided with running wheels 12, which are used for rolling on the ground.
[0047] An embodiment of the present invention further provides a method, which is applicable to a road marking machine for thermoplastic road marking paint provided in any of the above embodiments, and comprises the following steps: S1. Lift the control lever 3 to move the hopper 21 upward and hang it on the frame 1, while the auxiliary wheel 23 is off the ground; S2, inject a certain amount of marking paint into the hopper 21, and inject a certain amount of glass beads into the material box 22; S3. After the road marking machine is moved to the pending position, the control lever 3 is operated to lower the hopper 21 to the ground. At the same time, the auxiliary wheel 23 also contacts the ground. When the auxiliary wheel 23 swings upward, the marking opening 211 and the drop opening 223 are opened at the same time, so that the road marking paint and glass beads fall to the ground through the gate 245, thereby forming a marking line on the ground. As the road marking machine moves, the desired shape is drawn on the ground. S4. After marking is completed, the control lever 3 is manipulated to move the hopper 21 upward and hang it on the vehicle frame 1. At the same time, the auxiliary wheel 23 is separated from the ground. When the auxiliary wheel 23 swings downward, the marking opening 211 and the drop opening 223 are closed.
[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A road marking machine for hot melt road marking paint, characterized by: The hopper comprises a frame and a marking hopper, the marking hopper comprises a hopper, a material box, auxiliary wheels and a slide plate, the hopper is connected to the frame, the bottom of the hopper is provided with a marking port communicating with the inner cavity of the hopper, the material box is installed on the front side of the hopper, the bottom of the material box is provided with a drop port communicating with the inner cavity of the material box, the auxiliary wheel is swingably connected to the bottom of the material box through an extension arm, the slide plate is provided at the bottom of the hopper, and the slide plate and the hopper are slidably matched, a gate is provided on the slide plate and near the marking port, a blocking plate is provided on the extension arm at a position deviating from the swing axis of the extension arm, and the blocking plate is close to the bottom of the material box. The auxiliary wheel swings downward and drives the blocking plate to swing downward. The blocking plate swings up and finally rests on the drop opening to close the drop opening. The auxiliary wheel swings downward and pushes the slide plate to slide on the hopper to close the marked opening. When the hopper moves downward and drives the auxiliary wheel to contact the ground, the auxiliary wheel swings upward and drives the blocking plate to swing downward. The blocking plate breaks away from the drop opening to open the drop opening. The auxiliary wheel swings upward and pulls the slide plate to slide on the hopper to open the marked opening.
2. The road marking machine for hot melt road marking paint according to claim 1, characterized in that: The bottom of the hopper is provided with a horizontal bottom wall, the front side of the hopper is provided with an inclined front side wall, the front side wall is adjacent to the bottom wall, the scored opening is located on the front side wall and close to the bottom wall, the slide comprises a plate body one, a plate body two and a plate body three, the plate body one and the plate body two are not arranged coplanar, the plate body three is connected between the plate body one and the plate body two, the plate body one is slidably and parallelly arranged on the bottom wall of the hopper, the plate body three is parallel to the front side wall, the gate is located on the plate body one, and the plate body two is located at the lower side of the drop opening, when the slide moves from the material box to the hopper, the plate body three can be disengaged from the front side wall when the slide moves from the hopper to the material box, so that the scored opening is exposed and opened, and at the same time the gate on the plate body one moves to the bottom of the front side wall, and at the same time the gate and the scored opening are in a state of relative position up and down.
3. The road marking machine for thermoplastic road marking paint according to claim 1, characterized in that: The bottom of the material box is provided with adjacent bottom plate 1 and bottom plate 2, the bottom plate 1 is closer to the hopper relative to the bottom plate 2, the bottom plate 1 and the bottom plate 2 are staggered to form the drop opening, and the drop opening faces the marked opening on the hopper.
4. The road marking machine for hot melt road marking paint according to claim 3, characterized in that: The extension arm is provided with a hinge axis, and the hinge axis of the extension arm is hinged to the material box. The extension arm is sealed and connected to the second bottom plate, and the second bottom plate is made of a flexible material.
5. The road marking machine for hot melt road marking paint according to claim 2, characterized in that: The extension arm is provided with a traction part, which is connected to the second plate body of the skateboard.
6. The road marking machine for thermoplastic road marking paint according to claim 1, characterized in that: An elastic recovery structure is provided on the auxiliary wheel.
7. The road marking machine for hot melt road marking paint according to claim 2, characterized in that: The surface of the second plate body close to the material box is provided with a uniformly distributed groove, which extends from the material box to the hopper. The second plate body is provided with multiple uniformly distributed grooves, which are evenly and spaced apart along the width direction of the material box.
8. The road marking machine for thermoplastic road marking paint according to claim 1, characterized in that: The frame is provided with a barrel for storing paint, the hopper is arranged on one side of the frame, a discharge port is provided on the side of the barrel close to the hopper, and the top of the hopper is provided with an opening communicating with the interior of the hopper.
9. The road marking machine for thermoplastic road marking paint according to claim 1, characterized in that: The hopper is movably connected to the vehicle frame. A cantilever is provided at the front end of the hopper. A connecting rod is provided at the front end of the vehicle frame corresponding to the cantilever, and the cantilever is hinged on the connecting rod.
10. A method, characterized in that: The method is applicable to the road marking machine for thermoplastic road marking paint according to any one of claims 1 to 9, and the method comprises the following steps: S1. Lift the control lever to move the hopper upward and hang it on the frame, and at the same time, the auxiliary wheels are off the ground; S2. Inject a certain amount of road marking paint into the hopper and a certain amount of glass beads into the material box; S3. After moving the road marking machine to the waiting position, operate the joystick to lower the hopper to the ground. At the same time, the auxiliary wheel will also touch the ground. When the auxiliary wheel swings upward, it will open the marking port and the drop port at the same time, allowing the road marking paint and glass beads to fall to the ground through the gate, thus forming a marking line on the ground. As the road marking machine moves, the required shape is drawn on the ground. S4. After marking, operate the control lever to move the hopper upward and hang it on the frame. At the same time, the auxiliary wheel is separated from the ground. When the auxiliary wheel swings downward, the marking port and the drop port are closed.