A hot melt road marking machine

Abstract

The invention discloses a hot-melt road marking machine. The hot-melt road marking machine comprises: a traveling mechanism for supporting and moving the hot-melt road marking machine; a feeding structure installed on the traveling mechanism and connected to a feeding port of a distributor structure through a discharging end for conveying hot-melt paint; a distributor structure installed on the feeding structure for uniformly coating the hot-melt paint on a road to be marked; a hot-melt kettle structure installed on the traveling mechanism for uniformly heating the hot-melt paint; a control box assembly connected to the traveling mechanism, the feeding structure, the distributor structure and the hot-melt kettle structure for controlling the operation of each part; wherein the hot-melt kettle structure, the feeding structure and the distributor structure form a hot-melt paint passage, the outer side of the passage is coated with a heat-conducting oil structure, and the heat-conducting oil is used to heat and keep the hot-melt paint warm.

Description

Technical Field

[0001] The invention relates to the technical field of road marking equipment, and in particular to a hot-melt road marking machine. Background Art

[0002] Road markings refer to information markings such as lines, arrows, text, elevation marks, raised road signs and contour marks on the road surface, which are used to guide traffic flow, indicate driving directions and warn of road conditions. These markings can be used in conjunction with signs or independently. As an important part of road traffic, they play an important role in ensuring road traffic safety and improving traffic efficiency. In order to achieve unified standards, various road markings have formulated clear technical specifications in terms of width, length, overall size and coating thickness. The construction quality of road markings is not only related to traffic safety, but also directly affects the service life and effect of the markings. Therefore, the technical means and equipment selection of the construction process are particularly critical.

[0003] Thermoplastic road marking machines in the prior art have the technical problem of uneven material dispensing resulting in poor effect. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a thermoplastic road marking machine. The thermoplastic road marking machine comprises: a walking mechanism for supporting and moving the thermoplastic road marking machine; A feeding structure, installed on the walking mechanism, connected to the feeding port of the distributor structure through the discharging end, for conveying hot melt coating; A distributor structure, mounted on the feeding structure, for uniformly coating the hot melt paint on the road to be marked; A hot melt kettle structure, mounted on the walking mechanism, for uniformly heating the hot melt coating; A control box assembly is connected to the walking mechanism, the feeding structure, the distributor structure and the hot melt kettle structure, and is used to control the operation of each part; The hot melt kettle structure, the feeding structure and the distributor structure form a hot melt coating passage, the outer side of the passage is coated with a heat transfer oil structure, and the heat transfer oil is used to heat and keep the hot melt coating warm.

[0005] In some examples of the present invention, the feeding structure includes: The feeding pipe has a driving end and a discharging end at both ends, a cylindrical inner wall, a feeding port on the side wall and a removable cover plate to seal the feeding pipe; A spiral rod is coaxially arranged in the feeding pipe and is used to convey the hot melt coating; The feeding drive device is fixed to the driving end of the feeding pipe and connected to the screw rod, and is a driving motor or a hydraulic motor; A stopper block is provided at the driving end of the feeding pipe and has a through hole in the center to accommodate the screw rod; The tension adjustment mechanism includes a high temperature resistant seal, an adjustment cover plate and an adjustment bolt, which is used to adjust the seal position through the adjustment bolt to ensure the sealing of the feeding pipeline; The bearing box and the feed reducer are installed between the feed drive device and the feed pipe to improve the stability of the screw rod transmission; The thermal insulation structure covers the outside of the feeding pipe and includes a heat-conducting layer and a heat-insulating layer. The heat-conducting layer is bonded to the outer wall of the feeding pipe to transfer the heat of the heat-conducting oil. The heat-insulating layer covers the heat-conducting layer to form a cavity, and the cavity is filled with heat-conducting oil. The heat-insulating layer is provided with an oil inlet and an oil outlet to connect with the hot melt kettle structure.

[0006] In some examples of the present invention, the walking structure includes: A frame, used for mounting the main body of the distributor; Driving wheels, two in number, coaxially arranged; The supporting wheel is a universal wheel, which is in the same plane as the driving wheel. There are one or two supporting wheels, which form a triangular structure or a rectangular structure with the driving wheel to adapt to different load conditions; The travel drive structure includes a drive device and a transmission structure. The drive device is installed in a mounting seat of the frame and connected to the transmission structure. The transmission structure is connected to the hub of the drive wheel through a half shaft. The outside of the half shaft is covered with a protective sleeve. Travel reducer, which is arranged between the driving device and the transmission structure, is used to reduce the transmission speed; The control signal system is connected to the two drive device signals, is used to independently control the operating state of each drive device, and is integrated in the control box assembly.

[0007] In some examples of the present invention, the hot melt kettle structure includes: The paint bin is used to store hot-melt paint and is connected to the material placing machine; The heat transfer oil chamber is arranged on the bottom and side walls of the coating bin and is filled with heat transfer oil; The heat-conducting structure is connected with the heat-conducting oil chamber to form a circulation passage, and includes a heat-conducting coil, a connecting pipe and a circulation pump. The heat-conducting coil is arranged at the bottom of the heat-conducting oil chamber, and the circulation pump drives the heat-conducting oil to flow between the heat-conducting structure and the heat-conducting oil chamber. The heating structure is used to heat the heat-conducting structure, including: a heating partition, which is composed of a top plate, a bottom plate and a plurality of side plates, and the top plate is in close contact with the heat-conducting coil; a heating device is used to heat the heating partition; The outer wall forms an internal installation space for installing a paint bin, a heat transfer oil chamber, a heat transfer structure and a heating structure. A smoke exhaust port is provided on the outer wall to form a smoke exhaust channel between the outer wall and the heat transfer structure and the heating structure.

[0008] In some examples of the present invention, the hot melt kettle structure further includes: An expansion oil pipe is communicated with the heat transfer oil chamber and is coiled around the side wall of the outer wall; A high-level tank is connected to the expansion oil pipe, the height of the high-level tank is higher than the top of the heat transfer oil chamber, and the high-level tank has a vent; An overflow pipe is arranged on the side wall of the high-level tank, with the other end thereof facing vertically downward; The oil receiving container is arranged below the high-level tank, and its opening is directly opposite to the other end of the overflow pipe.

[0009] In some examples of the present invention, the distributor structure includes: The coating extrusion cutter head structure is used to evenly coat the hot melt coating on the surface to be processed, and a number of coating channels are provided on the surface to control the width and thickness of the coating; The gate is integrated with the coating extrusion cutter head and is used to adjust the coating flow and open and close the coating operation. The gate is connected to the distributor housing through a hinge structure and is driven by a drive device to achieve angle adjustment; The shell is used to install and fix the coating extrusion cutter head and the gate, and a coating flow channel is formed inside it to guide the hot melt coating to flow from the input end to the coating extrusion cutter head; a connecting structure is provided outside the shell for connecting with the feeding structure or the hot melt kettle.

[0010] In some examples of the present invention, the coating and extrusion tool head structure includes: A control assembly connected to the body of the hot melt road marking machine and used to drive the cutter head assembly to open or close the paint outlet; The coating extrusion cutter head assembly is arranged corresponding to the coating outlet and is movably connected to the control assembly. The coating extrusion cutter head assembly includes: Gate, used to control the opening and closing of the coating outlet; A hinge shaft, fixedly connected to the machine body, arranged along the extension direction of the coating outlet, and used for hingedly connecting the gate; Baffles are arranged on both sides of the gate and are fixedly connected to the hinge shaft to support the hinge shaft; The limiting assembly is arranged at both ends of the cutter head assembly, and comprises a first limiting member and a second limiting member, and is used to limit the axial displacement of the gate and / or adjust the gap between adjacent cutter head assemblies.

[0011] In some examples of the present invention, the gate includes: A supporting part, used to support the overall structure of the gate; A connecting part connected to one end of the supporting part, and a connecting hole is provided at the other end of the connecting part for connecting to the body of the hot melt road marking machine; The hinge part is connected to the other end of the support part, and the hinge part has a limiting groove and a hinge hole. The limiting groove is arranged on the outer side wall of the hinge part, opposite to the paint outlet, and is used to open or close the paint outlet; the hinge hole runs through both ends of the hinge part along the axial direction of the hinge part, and is used to be hinged with the machine body; A limiting portion, arranged at the end of the hinge portion, for limiting the axial displacement of the hinge portion; The reinforcing rib is fixedly arranged on one side of the supporting portion, and the reinforcing rib is connected to the connecting portion and / or the hinged portion to enhance the structural strength of the gate.

[0012] In some examples of the present invention, a regulating structure is further included: the regulating structure includes: The overflow main board has a top connected to the coating partition on the machine body through a fixed plate, and a bottom connected to the overflow plate through a bent portion; A fixing plate, used for fixing the overflow main board inside the machine body; The overflow plate is located at the bottom of the overflow main board and is arranged opposite to the coating outlet, and is used to adjust the coating pressure or discharge amount at the coating outlet position. The overflow plate is provided with a first connecting hole; Connecting components, located on both sides of the overflow mainboard, used to fix the overflow mainboard to the machine body; The fixing piece passes through the first connecting hole on the overflow plate and the second connecting hole on the bent portion, and is used to fix the overflow plate to the overflow main board.

[0013] In some examples of the present invention, the slag discharge driving member is connected to the body of the hot melt road marking machine and is used to drive the cutter head assembly to move, and the driving member is a cylinder or a linear motor; The support assembly comprises a first support member and a second support member, wherein one end of the first support member is connected to the driving member, and the other end is connected to the fixing assembly through a hinge, and both ends of the second support member are respectively connected to the first support member and the cutter head assembly, and the first support member has a plurality of weight-reducing holes to reduce the weight of the structure; A slag removal cutter head assembly is connected to the support assembly and is moved by a driving member to open or close a coating outlet, thereby discharging slag inside the hot melt road marking machine; The fixing assembly includes a first fixing plate, a second fixing plate and a fixing seat. The first fixing plate is connected to the machine body, the second fixing plate is connected to the first fixing plate and is connected to the first support member through a hinge. The fixing seat connects the first fixing plate and the driving member to stabilize the position of the driving member.

[0014] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be understood through practice of the present invention to have the following beneficial effects: 1. Improve construction efficiency; through the reasonable design of the walking mechanism, the hot melt road marking machine can move stably, greatly improving construction efficiency, while reducing manual operation and improving the degree of automation of road marking construction.

[0015] 2. Achieve uniform coating of paint; the feeding structure and the distributor structure can stably and evenly coat the hot-melt paint on the road to be marked through precise design and linkage, thereby ensuring that the width and thickness of the marking line meet the specification requirements and improving the construction quality.

[0016] 3. Provide efficient heating and insulation of the coating; through the coordinated design of the hot melt kettle structure and the heat transfer oil structure, the rapid heating and efficient insulation of the hot melt coating are achieved, effectively avoiding the problems of blockage and reduced fluidity caused by coating cooling during the construction process.

[0017] 4. Integrated control and simplified operation: The control box assembly uniformly connects the walking mechanism, feeding structure, distributor structure and hot melt kettle structure to achieve centralized control and coordinated operation of each component, significantly reducing the complexity of equipment operation and improving the overall stability of the system.

[0018] 5. Strong adaptability: The hot melt road marking machine of the present invention can flexibly adapt to different types of road marking construction requirements through modular design, and can efficiently complete straight lines, curved lines or complex patterns.

[0019] 6. Improved construction safety: The automated design of the equipment reduces reliance on manual operation, reduces labor intensity and safety risks during construction, and avoids paint waste and environmental pollution through precise control. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are 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.

[0021] Figure 1 A schematic diagram of the structure of a thermoplastic road marking machine provided by the present invention from a first viewing angle; Figure 2 A schematic diagram of the structure of a thermoplastic road marking machine provided by the present invention from a first viewing angle; Figure 3 It is a structural schematic diagram of the feeding structure in the present invention; Figure 4 for Figure 3 A magnified image of area A; Figure 5for Figure 4 Schematic diagram of the internal structure; Figure 6 Figure 5 Structural diagram of the tension adjustment mechanism; Figure 7 It is a structural schematic diagram of the walking mechanism in the present invention; Figure 8 for Figure 7 Schematic diagram of the structure in cross-section; Fig. 9 for Figure 8 A magnified image of area A; Fig.10 It is a schematic diagram of the installation of the distributor structure in the present invention; Fig.11 for Fig.10 Schematic diagram of the structure of the mid-coat extrusion cutter head; Fig.12 for Fig.11 Schematic diagram of the structure of the middle gate; Fig.13 This is a schematic diagram of the installation of the adjustment structure in the present invention; Fig.14 for Fig.13 A magnified image of area A; Fig.15 This is the installation diagram of the slag discharge structure; Fig.16 It is a structural schematic diagram of the slag discharge structure in the present invention; Fig.17 A schematic diagram of the structure of the hot melt kettle in the present invention; Fig.18 Schematic diagram of the internal structure of the hot melt kettle structure in the present invention.

[0022] Description of reference numerals: 100-travel mechanism; 110-frame; 120-driving wheel; 130-supporting wheel; 140-travel drive structure; 150-travel reducer; 200-feeding structure; 210-feeding pipeline; 220-screw rod; 230-feeding drive device; 240-limiting block; 250-tensioning adjustment mechanism; 251-high temperature seal; 252-adjusting cover plate; 253-adjusting bolt; 260-bearing box; 270-feeding reducer; 280-insulation structure; 300-distributor structure; 310-coating and extruding cutter head structure; 311-control component; 312-coating and extruding cutter head component; 313-gate; 313a-supporting part; 3134b-connecting part; 313c-hinge part; 313d-limiting part; 313e-reinforcement rib; 314-hinge shaft; 315-baffle; 316-limiting component; 320-housing; 400-hot melt kettle structure; 410-coating tank; 420-heat transfer oil chamber; 430-heat transfer structure; 431-heat transfer coil; 432-connecting pipe; 433-circulating pump; 440-heating structure; 441-heating baffle; 442-smoke exhaust channel; 443-heating device; 450-expansion oil pipe; 460-high-level tank; 470-overflow pipe; 480-oil receiving container; 500-control box assembly; 600-adjustment structure; 610-overflow main board; 620-fixing plate; 630-connection assembly; 640-fixing piece; 700 - slag discharge mechanism; 710 - slag discharge driving member; 720 - supporting assembly; 730 - slag discharge cutter head assembly; 740 - fixing assembly. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0026] The present invention provides a hot-melt road marking machine, comprising: a walking mechanism 100, used to support and move the hot-melt road marking machine; a feeding structure 200, installed on the walking mechanism 100, connected to the feeding port of a distributor structure 300 through a discharging end, and used to convey hot-melt paint; a distributor structure 300, installed on the feeding structure 200, and used to evenly apply the hot-melt paint on the road to be marked; a hot-melt kettle structure 400, installed on the walking mechanism 100, and used to evenly heat the hot-melt paint; a control box assembly 500, connected to the walking mechanism 100, the feeding structure 200, the distributor structure 300 and the hot-melt kettle structure 400, and used to control the operation of each part; wherein the hot-melt kettle structure 400, the feeding structure 200 and the distributor structure 300 form a hot-melt paint passage, the outer side of the passage is coated with a heat-conducting oil structure, and the heat-conducting oil is used to heat and keep the hot-melt paint warm.

[0027] The hot melt kettle structure 400 evenly heats the hot melt paint through the heating device 443 inside it, so that it reaches a molten state suitable for construction, and maintains a constant temperature of the paint in the passage through the heat transfer oil structure. The screw rod 220 in the feeding structure 200 is driven by the driving device to transport the hot melt paint from the discharge end of the hot melt kettle to the distributor structure 300. The distributor structure 300 evenly coats the hot melt paint on the road surface through its coating and extrusion cutter head to ensure that the width and thickness of the marking meet the design requirements. The operation of the entire device is centrally controlled by the control box assembly 500 to ensure the coordinated movement of the walking mechanism 100, the heating and transportation of the paint, and the coating action of the distributor.

[0028] This embodiment can efficiently and stably apply hot melt paint evenly on the road surface, ensuring the consistency and quality of the marking effect. At the same time, the heat transfer oil structure realizes constant temperature insulation of the hot melt paint, avoiding condensation or overheating of the paint during transportation, and improving the use efficiency of the paint. In addition, the integrated design of the control box assembly 500 makes the equipment operation more convenient, which helps to improve construction efficiency and reduce manual intervention.

[0029] It is worth noting that in the above scheme, the walking mechanism 100 can adopt different types of driving modes, such as motor drive or hydraulic drive, to meet the needs of different construction sites; the material of the heat transfer oil structure can select different heat transfer media according to the construction environment temperature, such as high-temperature heat transfer oil or other liquids with good heat transfer performance; the coating and extrusion blade of the distributor structure 300 can be designed as a replaceable structure to meet the requirements of different marking widths and thicknesses. In addition, the shape and size of the hot melt kettle structure 400 can be adjusted according to the actual installation space and use requirements of the equipment to improve the flexibility and adaptability of the equipment.

[0030] In some examples of the present invention, the feeding structure 200 includes: a feeding pipe 210, with a driving end and a discharging end at both ends, the inner wall is cylindrical, the side wall is provided with a feeding port and is equipped with a removable cover plate to seal the feeding pipe 210; a screw rod 220, coaxially arranged in the feeding pipe 210, for conveying hot melt coating; a feeding driving device 230, fixed at the driving end of the feeding pipe 210, connected to the screw rod 220, which is a driving motor or a hydraulic motor; a limit block 240, arranged at the driving end of the feeding pipe 210, with a through hole in the center to accommodate the screw rod 220; a tension adjustment mechanism 250, including a high temperature resistant seal 2 51. An adjusting cover plate 252 and an adjusting bolt 253 are used to adjust the position of the seal by means of the adjusting bolt 253 to ensure the sealing of the feeding pipe 210; a bearing box 260 and a feeding reducer 270 are installed between the feeding drive device 230 and the feeding pipe 210 to improve the transmission stability of the screw rod 220; a thermal insulation structure 280 covers the outer side of the feeding pipe 210, and includes a heat-conducting layer and a heat-insulating layer. The heat-conducting layer is bonded to the outer wall of the feeding pipe 210 to transfer the heat of the heat-conducting oil. The heat-insulating layer covers the heat-conducting layer and forms a cavity. The cavity is filled with heat-conducting oil. An oil inlet and an oil outlet are provided on the heat-insulating layer to connect to the hot melt kettle structure 400.

[0031] Specifically, the feeding structure 200 drives the screw rod 220 to rotate through the feeding drive device 230, and delivers the heated paint in the hot melt kettle to the distributor structure 300 through the feeding pipe 210. The rotation of the screw rod 220 cooperates with the sealing structure of the inner wall of the feeding pipe 210 to ensure that the paint does not leak or pollute the environment during the transportation process. The tension adjustment mechanism 250 adjusts the position of the seal by adjusting the bolt 253 to further improve the sealing performance of the feeding pipe 210. The insulation structure 280 transfers heat through the heat transfer oil to ensure the uniformity and stability of the paint temperature during the feeding process, and effectively prevents the paint from solidifying or denaturing due to temperature fluctuations.

[0032] Furthermore, this embodiment achieves efficient and smooth transportation of the paint by optimizing the design of the feeding pipe 210 and the driving system of the screw rod 220, thereby avoiding paint leakage during transportation. The provision of the thermal insulation structure 280 significantly improves the utilization rate of heat energy during transportation and maintains the ideal fluidity of the paint. The application of the tension adjustment mechanism 250 further improves the sealing and reliability of the equipment, reduces maintenance requirements, and extends the service life of the equipment. In addition, the combined design of the drive device and the feeding reducer 270 improves the transmission efficiency and stability of the screw rod 220.

[0033] In some examples of the present invention, the walking structure includes: a frame 110 for mounting a distributor body; There are two driving wheels 120, which are coaxially arranged; the support wheel 130 is a universal wheel and is in the same plane as the driving wheel 120. There are one or two support wheels 130, which form a triangular structure or a rectangular structure with the driving wheel 120 to adapt to different load conditions; the travel drive structure 140 includes a drive device and a transmission structure, the drive device is installed in a mounting seat of the frame 110 and is connected to the transmission structure, and the transmission structure is connected to the hub of the driving wheel 120 through a half-axle, and the outside of the half-axle is covered with a protective cover; the travel reducer 150 is arranged between the drive device and the transmission structure, and is used to reduce the transmission rate; the control signal system is connected to the signals of the two drive devices, and is used to independently control the operating status of each drive device, and is integrated in the control box assembly 500.

[0034] Specifically, the walking structure is powered by a driving device, and the transmission structure transmits the power to the driving wheel 120, thereby realizing the movement of the equipment. The driving wheel 120 and the supporting wheel 130 together constitute a stable supporting structure to ensure the smooth operation of the equipment under different load conditions. The walking reducer 150 optimizes the transmission rate, enhancing the controllability and low-speed stability of the equipment. The control signal system can independently regulate the operating state of each driving device, thereby realizing the straight-line travel and turning operation of the equipment. In addition, the half-axle protective cover effectively prevents dust and impurities from damaging the transmission structure, thereby extending the service life of the equipment.

[0035] Furthermore, this embodiment realizes precise movement and steering control of the hot melt road marking machine through the combined design of the travel drive structure 140 and the control signal system, which has strong adaptability and meets the needs of different construction scenarios. The configuration of the travel reducer 150 improves the stability and power transmission efficiency of the equipment, ensuring reliable operation in complex construction environments. The reasonable arrangement of the support wheel 130 and the drive wheel 120 greatly improves the load capacity and balance of the equipment. In addition, the centralized design of the control signal system improves the convenience of operation and reduces the possibility of misoperation.

[0036] It is worth noting that in the above scheme, the driving wheel 120 can be made of rubber wheels, polyurethane wheels or metal wheels according to the different construction ground conditions to enhance the passability and durability of the equipment. The number and position of the support wheels 130 can be adjusted according to the load conditions to form a variety of support structures, such as dual-drive dual-branch or omnidirectional drive structures. The drive device can be replaced with a hydraulic motor or a stepper motor to meet the needs of different power systems. In addition, the material of the frame 110 can be selected from lightweight aluminum alloys or high-strength steel to optimize the weight and strength of the equipment.

[0037] In some examples of the present invention, the hot melt kettle structure 400 includes: a coating tank 410, which is used to place hot melt coating and is connected to the material distribution machine structure 300; a heat transfer oil chamber 420, which is wrapped and arranged at the bottom and side walls of the coating tank 410 and filled with heat transfer oil; a heat transfer structure 430, which is connected to the heat transfer oil chamber 420 and forms a circulation path, including a heat transfer coil 431, a connecting pipe 432 and a circulation pump 433, the heat transfer coil 431 is arranged at the bottom of the heat transfer oil chamber 420, and the circulation pump 433 drives the heat transfer oil to flow between the heat transfer structure 430 and the heat transfer oil chamber 420. The hot oil flows between the hot oil chambers 420; the heating structure 440 is used to heat the heat-conducting structure 430, including: a heating baffle 441, composed of a top plate, a bottom plate and a plurality of side plates, the top plate is in close contact with the heat-conducting coil 431; a heating device 443 is used to heat the heating baffle 441; an outer wall, forming an internal installation space for installing the paint bin 410, the heat-conducting oil chamber 420, the heat-conducting structure 430 and the heating structure 440, and a smoke exhaust port is provided on the outer wall to form a smoke exhaust channel 442 between the outer wall and the heat-conducting structure 430 and the heating structure 440.

[0038] Specifically, the hot melt kettle structure 400 achieves efficient and uniform heating of the hot melt paint through the combined design of its thermal oil chamber 420 and thermal structure 430. The circulation pump 433 drives the thermal oil to circulate between the thermal structure 430 and the thermal oil chamber 420, and transfers the heat provided by the heating device 443 to the bottom and side walls of the paint bin 410, thereby heating the paint in all directions. The close fitting design of the heating baffle 441 and the thermal coil 431 further improves the heat conduction efficiency, ensuring that the hot melt paint is always in a molten state. The setting of the smoke exhaust channel 442 effectively discharges the exhaust gas during the heating process and maintains the cleanliness of the equipment operating environment.

[0039] Furthermore, through the close cooperation between the heating baffle 441 and the heat conducting coil 431, and the dynamic adjustment of the circulating pump 433, the hot melt kettle can accurately control the heating temperature according to the different melting points of the paint to avoid overheating or local condensation of the paint. The bottom and side walls of the paint bin 410 are wrapped by the thermal oil chamber 420, so that the paint is heated more evenly, thereby improving the fluidity and construction quality of the paint. The smoke exhaust port design on the outer wall further optimizes the heat dissipation performance of the equipment, ensuring the safety and stability of the equipment in a high-temperature working environment.

[0040] It is worth noting that in this embodiment, the circulation design of the thermal oil chamber 420 and the heat-conducting structure 430 significantly improves the thermal energy utilization efficiency of the hot melt kettle and reduces energy waste. The modular design of the heating baffle 441 and the heating device 443 facilitates disassembly and maintenance, thereby extending the service life of the equipment. The design of the smoke exhaust channel 442 on the outer wall not only reduces the environmental pollution during the operation of the hot melt kettle, but also provides a more comfortable operating environment for construction personnel. In addition, through the optimized matching of the circulating pump 433 and the heating device 443, the device can quickly heat up and accurately maintain the set temperature, further improving the construction efficiency.

[0041] In some examples of the present invention, the hot melt kettle structure 400 also includes: an expansion oil pipe 450, which is connected to the thermal oil chamber 420 and is coiled around the side wall of the outer wall; a high-level tank 460, which is connected to the expansion oil pipe 450, the height of the high-level tank 460 is higher than the top of the thermal oil chamber 420, and the high-level tank 460 has a vent; an overflow pipe 470, which is arranged on the side wall of the high-level tank 460, and the other end of which is vertically downward; an oil receiving container 480, which is arranged below the high-level tank 460, and its opening is opposite to the other end of the overflow pipe 470.

[0042] Specifically, The connection design between the expansion oil pipe 450 and the high-level tank 460 provides an effective expansion buffer space for the thermal oil chamber 420. During the operation of the equipment, the thermal oil expands due to heat and enters the expansion oil pipe 450, and finally flows into the high-level tank 460. The high-level tank 460 maintains the pressure balance of the system through the vent. The overflow pipe 470 is used to discharge the excessive thermal oil to ensure the safe operation of the heat transfer system. The overflowed thermal oil flows into the oil receiving container 480 through the overflow pipe 470 for easy collection and reuse.

[0043] Furthermore, the height of the high-level tank 460 is significantly higher than the top of the thermal oil chamber 420. This design effectively avoids the problem of thermal oil reflux caused by the expansion oil pipe 450 being too low. The expansion oil pipe 450 is coiled around the outer wall, which not only increases the buffer space for the thermal oil, but also further improves the thermal balance of the system through thermal contact with the outer wall. The linear docking design of the overflow pipe 470 and the oil receiving container 480 simplifies the collection process of excess thermal oil and reduces the complexity of system maintenance.

[0044] It is worth noting that this embodiment successfully realizes the automatic pressure regulation of the heat transfer oil system and the collection and recovery of excess oil through the combined design of the expansion oil pipe 450, the high-level tank 460 and the overflow pipe 470, which significantly improves the safety and economy of the equipment operation. The structural optimization of the high-level tank 460 and the expansion oil pipe 450 also effectively reduces the stress caused by the expansion of the heat transfer oil system, thereby extending the service life of the equipment. In addition, the setting of the oil receiving container 480 not only facilitates the subsequent cleaning work of the operator, but also provides a guarantee for the environmental protection design of the system.

[0045] In the above scheme, the material of the high-level tank 460 can be selected from high-temperature resistant stainless steel, aluminum alloy or engineering plastic to meet the needs of different construction conditions. The length and coiling form of the expansion oil pipe 450 can be adjusted according to the shape of the outer wall of the equipment to better adapt to the installation space. The oil receiving container 480 can be designed as a structure with a sealing cover to prevent the volatilization or contamination of the thermal oil. In addition, the length and diameter of the overflow pipe 470 can be optimized according to the expansion coefficient of the thermal oil and the system flow requirements to further improve the oil discharge efficiency.

[0046] In some examples of the present invention, the distributor structure 300 includes: a coating and extrusion tool head structure 310, which is used to evenly coat the hot melt coating on the surface to be processed, and a plurality of coating channels are provided on the surface to control the width and thickness of the coating; a gate 313, which is integrated with the coating and extrusion tool head and is used to adjust the coating flow and open and close the coating operation. The gate 313 is connected to the distributor housing 320 through a hinge structure and is driven by a drive device to achieve angle adjustment; the housing 320 is used to install and fix the coating and extrusion tool head and the gate 313, and a coating flow channel is formed inside the housing 320 to guide the hot melt coating from the input end to the coating and extrusion tool head; a connecting structure is provided on the outside of the housing 320 for connecting to the feeding structure 200 or the hot melt kettle.

[0047] Specifically, the coating extrusion cutter head of the distributor structure 300 accurately distributes the coating to the surface to be processed through the coating channel to achieve accurate control of the width and thickness of the marking. The optimized design of the coating flow channel makes the coating flow smoother and reduces the possibility of coating residue and blockage. The gate 313 adjusts the angle through the drive device to achieve dynamic adjustment of the coating width and flow rate to meet different construction requirements. The housing 320 is closely connected with the feeding structure 200 through a solid connection structure to ensure the continuity and stability of the coating delivery.

[0048] Furthermore, the seamless connection between the coating extrusion cutter head structure 310 and the coating flow channel reduces the energy loss of the coating during the transportation process, while avoiding the waste and cleaning burden caused by the coating retention. The hinged structure design of the gate 313 not only improves the accuracy of the adjustment, but also enhances the durability of the device. The external connection structure of the shell 320 is reinforced to withstand long-term working loads under high temperature and high pressure environments, thereby ensuring the reliable operation of the distributor structure 300.

[0049] It is worth noting that in this embodiment, the multi-channel design of the coating cutter head makes the coating process more uniform and significantly improves the marking quality. The integrated structure of the gate 313 reduces the assembly error between components and improves the convenience and accuracy of the coating operation. The optimized design of the shell 320 further improves the strength and stability of the entire distributor structure 300, while reducing the vibration and noise during the operation of the equipment. In addition, by dynamically adjusting the coating width and thickness, the equipment can flexibly adapt to various construction conditions, significantly improving the applicability and efficiency.

[0050] In the above scheme, the material of the coating extrusion cutter head can be selected from stainless steel, tungsten carbide or high temperature resistant ceramics according to the chemical properties of the coating to improve its corrosion resistance and wear resistance. The drive device of the gate 313 can be pneumatically driven, electrically driven or hydraulically driven to meet the power requirements of different construction environments. The structure and shape of the housing 320 can be adjusted according to the actual installation space, for example, a modular or detachable design is adopted to facilitate the maintenance and transportation of the equipment.

[0051] In some examples of the present invention, the coating and extrusion tool head structure 310 includes: a control component 311, which is connected to the body of the hot melt road marking machine and is used to drive the tool head assembly to open or close the paint outlet; a coating and extrusion tool head assembly 312, which is arranged corresponding to the paint outlet and is movably connected to the control component 311, and the coating and extrusion tool head assembly 312 includes: a gate 313, which is used to control the opening and closing of the paint outlet; a hinge shaft 314, which is fixedly connected to the body and arranged along the extension direction of the paint outlet, and is used to hinge the gate 313; a baffle 315, which is arranged on both sides of the gate 313 and is fixedly connected to the hinge shaft 314, and is used to support the hinge shaft 314; a limit assembly 316, which is arranged at both ends of the tool head assembly, including a first limit member and a second limit member, which is used to limit the axial displacement of the gate 313, and / or adjust the gap between adjacent tool head assemblies.

[0052] Specifically, the control component 311 controls the opening and closing of the coating cutter head through precise signal input, so that the flow of paint is consistent with the movement of the marking machine, avoiding waste of paint. The gate 313 of the coating cutter head assembly 312 is supported by the hinge shaft 314, and can be stably adjusted at an angle on a fixed axis. The design of the baffle 315 enhances the rigidity of the hinge shaft 314 and further improves the structural stability of the cutter head assembly. The limit assembly 316 ensures that the opening and closing range of the gate 313 meets the coating process requirements by precisely adjusting the positions of the first limit member and the second limit member, while avoiding paint leakage or uneven marking between adjacent cutter head assemblies.

[0053] Furthermore, the extension direction of the hinge shaft 314 is parallel to the flow direction of the paint outlet. This design makes the opening and closing of the gate 313 smoother and reduces the retention of paint. The baffle 315 supports the hinge shaft 314 and acts as a partition to prevent external dust or impurities from entering the cutter head assembly. The optimized design of the limit assembly 316 not only improves the coating quality, but also enhances the durability and maintainability of the cutter head assembly, making it suitable for high-frequency construction scenarios.

[0054] It is worth noting that this embodiment achieves high-precision control of the coating outlet through the coordinated design of the coating cutter head assembly 312 and the control assembly 311, significantly improving the consistency and aesthetics of the marking effect. The structural optimization of the hinge shaft 314 and the baffle 315 increases the service life of the cutter head assembly and reduces mechanical wear under high temperature and high pressure environments. The adjustment function of the limit assembly 316 enables the equipment to quickly adapt to the construction requirements of different marking widths and thicknesses, further enhancing the flexibility and practicality of the equipment. In addition, the modular design between components facilitates the rapid assembly and disassembly of the equipment and reduces maintenance costs.

[0055] In the above scheme, the gate 313 of the coating and extrusion cutter head can be made of wear-resistant alloy, stainless steel or high-strength engineering plastic to adapt to different construction conditions. The length and diameter of the hinge shaft 314 can be adjusted according to the size of the cutter head assembly to enhance its bearing capacity and stability. The first limiter and the second limiter of the limiter assembly 316 can be designed as elastic structures to improve the flexibility of adjustment. The control assembly 311 can use different types of drive methods, such as servo motors, hydraulic drives or pneumatic drives, to meet various construction needs.

[0056] In some examples of the present invention, the gate 313 includes: a support portion 313a, used to support the overall structure of the gate 313; a connecting portion 3134b, connected to one end of the support portion 313a, and the other end of the connecting portion 3134b is provided with a connecting hole for connecting to the body of the hot melt road marking machine; a hinge portion 313c, connected to the other end of the support portion 313a, and the hinge portion 313c has a limiting groove and a hinge hole, and the limiting groove is provided on the outer side wall of the hinge portion 313c, and the hinge hole is provided. The paint outlets are opposite to each other and are used to open or close the paint outlet; the hinge hole passes through both ends of the hinge part 313c along the axial direction of the hinge part 313c and is used to be hinged with the machine body; the limiting portion 313d is arranged at the end of the hinge part 313c and is used to limit the axial displacement of the hinge part 313c; the reinforcing rib 313e is fixedly arranged on one side of the supporting portion 313a, and the reinforcing rib 313e is connected to the connecting portion 3134b and / or the hinge part 313c and is used to enhance the structural strength of the gate 313.

[0057] The gate 313 is connected to the entire coating and extrusion cutter head assembly 312 through the support portion 313a to ensure its stability under high temperature and high pressure environments. The connection hole design of the connection portion 3134b enables the gate 313 to be accurately positioned on the body of the marking machine, thereby maintaining the overall consistency of the device. The hinge portion 313c controls the opening and closing angles of the gate 313 through the limiting groove and the hinge hole to ensure the smooth flow of the coating outlet. The design of the limiting portion 313d effectively prevents the displacement deviation of the hinge portion 313c in the axial direction, ensuring the operating accuracy of the gate 313. The reinforcing ribs 313e enhance the overall rigidity of the gate 313 and improve the gate 313's ability to resist deformation.

[0058] Furthermore, the design position of the limiting groove is opposite to the paint outlet, so that the gate 313 can better fit the contour of the paint outlet, thereby improving the sealing of the paint. The through-hole design of the hinge hole simplifies the assembly method of the gate 313 and the body, and improves the assembly efficiency of the device. The reinforcing rib 313e forms additional mechanical support between the support portion 313a and the hinge portion 313c, which enhances the durability of the gate 313 during repeated opening and closing, and is particularly suitable for scenes with frequent construction.

[0059] It is worth noting that this embodiment improves the stability and service life of the coating extrusion tool head assembly 312 through the fine design of the structure of each part of the gate 313. The combined design of the limiting groove and the limiting portion 313d significantly improves the accuracy of the operation of the gate 313 and reduces the risk of paint leakage. The application of the reinforcing rib 313e enables the gate 313 to withstand high-intensity mechanical shock and thermal stress, further improving the reliability of the equipment. In addition, the standardized design of the connecting portion 3134b facilitates the replacement and maintenance of the gate 313, reducing the maintenance cost of the equipment.

[0060] Replaceable or deformable implementation scheme In the above scheme, the material of the support portion 313a can be selected from heat-resistant aluminum alloy, carbon fiber composite material or high-strength steel to meet different construction requirements. The shape and depth of the limiting groove can be adjusted according to the specifications of the paint outlet to further optimize the sealing performance of the gate 313. The diameter and penetration method of the hinge hole can be designed as a standardized interface to facilitate compatibility with different types of marking machines. The number and layout of the reinforcing ribs 313e can be optimized according to the load conditions of the construction environment to balance the requirements of rigidity and lightness.

[0061] In some examples of the present invention, an adjustment structure 600 is further included: the adjustment structure 600 includes: The overflow main board 610 has a top connected to the coating partition on the machine body through a fixing plate 620, and a bottom connected to the overflow plate through a bending portion; A fixing plate 620, used for fixing the overflow main plate 610 inside the machine body; The overflow plate is located at the bottom of the overflow main board 610 and is arranged opposite to the coating outlet, and is used to adjust the coating pressure or discharge amount at the coating outlet position. The overflow plate is provided with a first connecting hole; The connecting components 630 are located on both sides of the overflow main board 610 and are used to fix the overflow main board 610 to the machine body; The fixing member 640 passes through the first connecting hole on the overflow plate and the second connecting hole on the bending portion, and is used to fix the overflow plate to the overflow main board 610.

[0062] Specifically, the overflow main board 610 is installed inside the machine body through the fixing plate 620 and is tightly connected to the paint partition to ensure the stability of the adjustment structure 600. The overflow plate is flexibly connected to the overflow main board 610 through the bending portion, so that the pressure and discharge amount of the paint outlet can be dynamically adjusted according to demand. The fixing member 640 tightly combines the overflow plate with the overflow main board 610 to form a stable adjustment component to prevent the components from loosening due to vibration during the construction process. The connecting component 630 is located on both sides of the overflow main board 610, further improving the installation stability of the adjustment structure 600.

[0063] Furthermore, the overflow plate is directly opposite to the coating outlet, and the pressure of the coating at the outlet can be precisely controlled by adjusting the position of the fixing member 640. The design of the bent portion provides additional space for the adjustment of the overflow plate, increasing the flexibility of operation. The dual fixing method of the fixing plate 620 and the connecting assembly 630 improves the overall strength of the adjustment structure 600, which is suitable for construction scenes with high vibration and high load.

[0064] It is worth noting that this embodiment significantly improves the control accuracy of the coating outlet pressure through the design of the adjustment structure 600, so that the equipment can adapt to various construction requirements. The flexible connection method between the overflow plate and the overflow main board 610 makes the adjustment process simpler and faster. The combined design of the fixing member 640 and the connecting assembly 630 not only improves the stability of the structure, but also extends the service life of the equipment. In addition, this design can effectively reduce the impact of coating pressure fluctuations on the marking quality during construction, and further optimize the construction performance of the equipment.

[0065] Replaceable or deformable implementation scheme In the above scheme, the material of the overflow plate can be selected from high temperature resistant alloys, stainless steel or engineering plastics to adapt to the chemical properties of different coatings. The type of the fixing part 640 can be selected from bolts, spring pins or quick-release buckles to meet different installation and disassembly requirements. The connection method of the overflow main board 610 and the fixing plate 620 can be welding, threaded connection or riveting to improve the strength and durability of the structure. The design of the bending part can be adjusted to a retractable structure to facilitate precise adjustment of the position and angle of the overflow plate.

[0066] In some examples of the present invention, a slag discharge driving member 710 is connected to the body of the hot melt road marking machine and is used to drive the cutter head assembly to move. The driving member is a cylinder or a linear motor; the support assembly 720 includes a first support member and a second support member, one end of the first support member is connected to the driving member, and the other end is connected to the fixing assembly 740 through a hinge, and the two ends of the second support member are respectively connected to the first support member and the cutter head assembly, and the first support member has a plurality of weight-reducing holes to reduce the weight of the structure; the slag discharge cutter head assembly 730 is connected to the support assembly 720, and is moved by the driving member to open or close the paint outlet, thereby discharging the slag inside the hot melt road marking machine; the fixing assembly 740 includes a first fixing plate 620, a second fixing plate 620 and a fixing seat, the first fixing plate 620 is connected to the body, the second fixing plate 620 is connected to the first fixing plate 620, and is connected to the first support member through a hinge, and the fixing seat connects the first fixing plate 620 and the driving member to stabilize the position of the driving member.

[0067] Specifically, the slag discharge mechanism 700 drives the cutter head assembly to move through the action of the slag discharge drive 710, thereby opening or closing the paint outlet. The first support member and the second support member of the support assembly 720 provide sufficient structural stability for the cutter head assembly, while the design of the weight-reducing holes effectively reduces the total weight of the structure, facilitating the movement and operation of the equipment. The first fixed plate 620 and the second fixed plate 620 of the fixed assembly 740 are interconnected and hinged to the support assembly 720, providing reliable fixed support for the operation of the slag discharge mechanism 700. The setting of the slag discharge cutter head assembly 730 effectively prevents the paint outlet from being blocked due to residue accumulation, thereby ensuring the normal operation of the equipment.

[0068] Furthermore, the slag discharge drive 710 uses a cylinder or a linear motor, which has high action sensitivity and can quickly respond to operating instructions to clean up the residue at the coating outlet in time. The support assembly 720 is connected to the fixed assembly 740 by a hinge to ensure that the movement trajectory of the cutter head assembly is smooth and avoid damage to other parts of the equipment due to vibration or mechanical shock. The design of the fixed seat optimizes the installation position of the drive and improves the operating efficiency and reliability of the slag discharge mechanism 700.

[0069] It is worth noting that this embodiment solves the problem of easy clogging of the coating outlet during long-term operation of the hot-melt road marking machine through the design of the slag discharge mechanism 700, and effectively improves the operating stability and construction quality of the equipment. The lightweight design of the support assembly 720 not only maintains the strength of the structure, but also reduces the total weight of the equipment, which is convenient for operation and maintenance. The close cooperation between the fixed assembly 740 and the driving member significantly improves the reliability of the slag discharge mechanism 700 and extends the service life of the equipment. In addition, the modular design of the slag discharge mechanism 700 facilitates quick disassembly and maintenance, reduces equipment downtime, and improves construction efficiency.

[0070] In the above scheme, the slag discharge drive 710 can select an electric motor or a hydraulic drive device according to the construction conditions to meet different power requirements. The materials of the first support member and the second support member can be high-strength aluminum alloy, titanium alloy or engineering plastic to further optimize the weight and durability of the equipment. The first fixing plate 620 and the second fixing plate 620 of the fixing assembly 740 can be connected in a variety of ways, such as bolt fixing, welding or quick-release buckles, to adapt to different installation conditions. The size and shape of the slag discharge cutter head can be adjusted according to the specifications of the coating outlet to improve the slag discharge efficiency and applicability.

[0071] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0072] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A hot melt road marking machine, characterized in that: include: Traveling mechanism, used to support and move the hot melt road marking machine; A feeding structure, installed on the walking mechanism, connected to the feeding port of the distributor structure through the discharging end, for conveying hot melt coating; A distributor structure, mounted on the feeding structure, for uniformly coating the hot melt paint on the road to be marked; A hot melt kettle structure, mounted on the walking mechanism, for uniformly heating the hot melt coating; A control box assembly is connected to the walking mechanism, the feeding structure, the distributor structure and the hot melt kettle structure, and is used to control the operation of each part; The hot melt kettle structure, the feeding structure and the distributor structure form a hot melt coating passage, the outer side of the passage is coated with a heat transfer oil structure, and the heat transfer oil is used to heat and keep the hot melt coating warm.

2. The hot melt road marking machine according to claim 1, characterized in that: The feeding structure comprises: The feeding pipe has a driving end and a discharging end at both ends, a cylindrical inner wall, a feeding port on the side wall and a removable cover plate to seal the feeding pipe; A spiral rod is coaxially arranged in the feeding pipe and is used to convey the hot melt coating; The feeding drive device is fixed to the driving end of the feeding pipe and connected to the screw rod, and is a driving motor or a hydraulic motor; A stopper block is provided at the driving end of the feeding pipe and has a through hole in the center to accommodate the screw rod; The tension adjustment mechanism includes a high temperature resistant seal, an adjustment cover plate and an adjustment bolt, which is used to adjust the seal position through the adjustment bolt to ensure the sealing of the feeding pipeline; The bearing box and the feed reducer are installed between the feed drive device and the feed pipe to improve the stability of the screw rod transmission; The thermal insulation structure covers the outside of the feeding pipe and includes a heat-conducting layer and a heat-insulating layer. The heat-conducting layer is bonded to the outer wall of the feeding pipe to transfer the heat of the heat-conducting oil. The heat-insulating layer covers the heat-conducting layer to form a cavity, and the cavity is filled with heat-conducting oil. The heat-insulating layer is provided with an oil inlet and an oil outlet to connect with the hot melt kettle structure.

3. The hot melt road marking machine according to claim 1, characterized in that: The walking structure comprises: A frame, used for mounting the main body of the distributor; Driving wheels, two in number, coaxially arranged; The supporting wheel is a universal wheel, which is in the same plane as the driving wheel. There are one or two supporting wheels, which form a triangular structure or a rectangular structure with the driving wheel to adapt to different load conditions; The travel drive structure includes a drive device and a transmission structure. The drive device is installed in a mounting seat of the frame and connected to the transmission structure. The transmission structure is connected to the hub of the drive wheel through a half shaft. The outside of the half shaft is covered with a protective sleeve. Travel reducer, which is arranged between the driving device and the transmission structure, is used to reduce the transmission speed; The control signal system is connected to the two drive device signals, is used to independently control the operating state of each drive device, and is integrated in the control box assembly.

4. The hot melt road marking machine according to claim 1, characterized in that: The hot melt kettle structure comprises: The paint bin is used to store hot-melt paint and is connected to the material placing machine; The heat transfer oil chamber is arranged on the bottom and side walls of the coating bin and is filled with heat transfer oil; The heat-conducting structure is connected with the heat-conducting oil chamber to form a circulation passage, and includes a heat-conducting coil, a connecting pipe and a circulation pump. The heat-conducting coil is arranged at the bottom of the heat-conducting oil chamber, and the circulation pump drives the heat-conducting oil to flow between the heat-conducting structure and the heat-conducting oil chamber. The heating structure is used to heat the heat-conducting structure, including: a heating partition, which is composed of a top plate, a bottom plate and a plurality of side plates, and the top plate is in close contact with the heat-conducting coil; a heating device is used to heat the heating partition; The outer wall forms an internal installation space for installing a paint bin, a heat transfer oil chamber, a heat transfer structure and a heating structure. A smoke exhaust port is provided on the outer wall to form a smoke exhaust channel between the outer wall and the heat transfer structure and the heating structure.

5. The hot melt road marking machine according to claim 2, characterized in that: The hot melt kettle structure also includes: The expansion oil pipe is communicated with the heat transfer oil chamber and is coiled around the side wall of the outer wall; A high-level tank is connected to the expansion oil pipe, the height of the high-level tank is higher than the top of the heat transfer oil chamber, and the high-level tank has a vent; An overflow pipe is arranged on the side wall of the high-level tank, with the other end thereof facing vertically downward; The oil receiving container is arranged below the high-level tank, and its opening is directly opposite to the other end of the overflow pipe.

6. The hot melt road marking machine according to claim 1, characterized in that: The distributor structure comprises: The coating extrusion cutter head structure is used to evenly coat the hot melt coating on the surface to be processed, and a number of coating channels are provided on the surface to control the width and thickness of the coating; The shell is used to install and fix the coating extrusion cutter head structure, and a coating flow channel is formed inside the shell to guide the hot melt coating to flow from the input end to the coating extrusion cutter head; a connecting structure is arranged outside the shell to connect with the feeding structure.

7. The hot melt road marking machine according to claim 6, characterized in that: The coating and extrusion cutter head structure comprises: A control assembly connected to the body of the hot melt road marking machine and used to drive the cutter head assembly to open or close the paint outlet; The coating extrusion cutter head assembly is arranged corresponding to the coating outlet and is movably connected to the control assembly. The coating extrusion cutter head assembly includes: Gate, used to control the opening and closing of the coating outlet; A hinge shaft, fixedly connected to the machine body, arranged along the extension direction of the coating outlet, and used for hingedly connecting the gate; Baffles are arranged on both sides of the gate and are fixedly connected to the hinge shaft to support the hinge shaft; The limiting assembly is arranged at both ends of the cutter head assembly, and comprises a first limiting member and a second limiting member, and is used to limit the axial displacement of the gate and / or adjust the gap between adjacent cutter head assemblies.

8. The hot melt road marking machine according to claim 7, characterized in that: The gate comprises: A supporting part, used to support the overall structure of the gate; A connecting part connected to one end of the supporting part, and a connecting hole is provided at the other end of the connecting part for connecting to the body of the hot melt road marking machine; The hinge part is connected to the other end of the support part, and the hinge part has a limiting groove and a hinge hole. The limiting groove is arranged on the outer side wall of the hinge part, opposite to the paint outlet, and is used to open or close the paint outlet; the hinge hole runs through both ends of the hinge part along the axial direction of the hinge part, and is used to be hinged with the machine body; A limiting portion, arranged at the end of the hinge portion, for limiting the axial displacement of the hinge portion; The reinforcing rib is fixedly arranged on one side of the supporting portion, and the reinforcing rib is connected to the connecting portion and / or the hinged portion to enhance the structural strength of the gate.

9. The hot melt road marking machine according to claim 7, characterized in that: Also includes an adjustment structure: the adjustment structure includes: The overflow main board has a top connected to the coating partition on the machine body through a fixed plate, and a bottom connected to the overflow plate through a bent portion; A fixing plate, used for fixing the overflow main board inside the machine body; The overflow plate is located at the bottom of the overflow main board and is arranged opposite to the coating outlet, and is used to adjust the coating pressure or discharge amount at the coating outlet position. The overflow plate is provided with a first connecting hole; Connecting components, located on both sides of the overflow mainboard, used to fix the overflow mainboard to the machine body; The fixing piece passes through the first connecting hole on the overflow plate and the second connecting hole on the bent portion, and is used to fix the overflow plate to the overflow main board.

10. The hot melt road marking machine according to claim 7, characterized in that: Also includes slag discharge mechanism: A slag discharge driving member connected to the body of the hot melt road marking machine and used to drive the cutter head assembly to move. The driving member is a cylinder or a linear motor; The support assembly comprises a first support member and a second support member, wherein one end of the first support member is connected to the driving member, and the other end is connected to the fixing assembly through a hinge, and both ends of the second support member are respectively connected to the first support member and the cutter head assembly, and the first support member has a plurality of weight-reducing holes to reduce the weight of the structure; A slag removal cutter head assembly is connected to the support assembly and is moved by a driving member to open or close a coating outlet, thereby discharging slag inside the hot melt road marking machine; The fixing assembly includes a first fixing plate, a second fixing plate and a fixing seat. The first fixing plate is connected to the machine body, the second fixing plate is connected to the first fixing plate and is connected to the first support member through a hinge. The fixing seat connects the first fixing plate and the driving member to stabilize the position of the driving member.

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