Automatic marking equipment for road

Abstract

The utility model discloses automatic marking equipment for a road. An included angle is always formed between the working end face of a spray head and the to-be-marked position of the road surface; the stirring assembly is mounted on the storage tank; the sweeping assembly is arranged at the bottom of a vehicle head of the movable vehicle frame. An included angle is formed between the working face of the sweeping assembly and a road surface to-be-marked line. The working end of the vibration assembly abuts against the periphery of the connecting pipe. The two sliding rods are in sliding connection with the movable frame, and the other ends of the sliding rods are close to the axis of the movable frame. The stirring assembly ensures that raw materials in the storage tank are uniform. The nozzle keeps an included angle with the road surface to ensure clear and continuous marking. The cleaning assembly works before scribing, road surface impurities are removed, the scribing quality is guaranteed, the working face of the cleaning assembly and the spray head are horizontally arranged, and seamless connection of cleaning and scribing is achieved. The vibration assembly assists the raw materials to be sprayed out from the nozzle to prevent blockage and wire breakage. The sliding rod is slidably connected with the movable frame, the moving range of the nozzle can be adjusted according to the marking width requirement, and the marking width is accurately controlled.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of municipal roads, in particular to an automatic line marking device for roads. BACKGROUND

[0002] Roads refer to infrastructure for various trackless vehicles and pedestrians, and are divided into highways, urban roads, rural roads, factory roads, forestry roads, test roads, competition roads, automobile test roads, plant passageways and school roads according to their use characteristics, in addition to the ways to achieve certain goals, the ways of development and changes of things, the influence of roads on automobile safety, the development of roads and the construction of road networks, whether they are adapted to the living standards, living habits and economic development of society, if there are many cars and few roads, the service life of the roads will be reduced and problems will easily occur.

[0003] At the present stage, the newly built roads need to use the line marking device to perform the line marking work. In the use process of the current line marking device, the raw materials are prone to sedimentation, which will affect the line marking effect, so as to cause the line marking standard to be unqualified. CONTENT OF THE UTILITY MODEL

[0004] The embodiment of the application provides an automatic line marking device for roads, which aims to ensure that the raw materials can be stably discharged to ensure the road line marking effect, thereby meeting the line marking standard while saving manpower and material resources.

[0005] To achieve the above-mentioned purpose, the application provides the following technical scheme:

[0006] An automatic line marking device for roads comprises a mobile frame, a storage tank, a stirring assembly, a vibration assembly, a sliding film pump, a connecting pipe, a spray head, a cleaning assembly and two sliding rods.

[0007] The mobile frame is horizontally placed on a working surface.

[0008] The storage tank is fixedly installed on the mobile frame, the sliding film pump is arranged at the bottom of the mobile frame, the input end of the sliding film pump is in communication with the discharge port of the storage tank, the output end of the sliding film pump is in communication with the input end of the connecting pipe, the output end of the connecting pipe is in communication with the input end of the spray head, and the working end face of the spray head is always arranged at an angle with the road surface to be marked.

[0009] The stirring assembly is installed on the storage tank and is used for stirring the raw materials in the storage tank.

[0010] The cleaning assembly is arranged at the bottom of the head of the mobile frame, the working face of the cleaning assembly is arranged at an angle with the road surface to be marked, and the working end face of the spray head is arranged horizontally.

[0011] The vibration assembly is arranged at the bottom of the mobile frame, and the working end of the vibration assembly is in abutment with the periphery of the connecting pipe.

[0012] One end of the two slide rods is slidably connected to the front of the moving frame, and can move towards or away from the axis of the moving frame, and the other end is close to the axis of the moving frame.

[0013] Further, the stirring assembly comprises a stirring motor, a connecting rod and a plurality of stirring rods.

[0014] The stirring motor is installed on the top of the storage tank, and the output end thereof extends into the interior of the storage tank.

[0015] One end of the connecting rod is fixedly connected to the output end of the stirring motor, and the other end thereof extends to the bottom of the storage tank.

[0016] The plurality of stirring rods are arranged at equal intervals along the axial length of the connecting rod, one end of each of the plurality of stirring rods is fixedly connected to the peripheral portion of the connecting rod, and the other end thereof extends to the inner wall of the storage tank.

[0017] Further, a plurality of through holes are spirally arranged from the inside to the outside along the radial direction of the plurality of stirring rods, and the diameter of the plurality of through holes is greater than the radius of the stirring rod.

[0018] Further, the vibration assembly comprises a support frame, a vibration motor, a vibration rod and a rubber pad.

[0019] The support frame of the frame structure is fixedly arranged at the bottom of the moving frame.

[0020] The vibration motor is vertically arranged in the interior of the support frame, the output end of the vibration motor faces the bottom surface of the moving frame, and is located beside the connecting pipe.

[0021] One end of the vibration rod is fixedly arranged at the output end of the vibration motor, and the other end thereof is close to the peripheral portion of the connecting pipe.

[0022] One side of the rubber pad is fixedly connected to one end of the vibration rod close to the connecting pipe, and the opposite side thereof is close to the peripheral surface of the connecting pipe.

[0023] Further, the cleaning assembly comprises a baffle, a mounting bracket, an air pump, a mounting sleeve, at least two air nozzles and a telescopic air cylinder.

[0024] The baffle is fixedly arranged at the inner side of the bottom of the front of the moving frame, the middle portion of the baffle is bent towards the axis of the moving frame, forming an arc-shaped path.

[0025] The mounting bracket is fixedly arranged at the bottom of the front of the moving frame, and is located at the front side of the baffle.

[0026] The mounting sleeve is slidably arranged on the mounting bracket, and the length of the mounting sleeve is less than and / or equal to one third of the length of the mounting bracket.

[0027] The air pump is fixedly arranged at the side of the mounting bracket close to the inner side of the front of the moving frame.

[0028] Two air nozzles are arranged along the length direction of the mounting sleeve, and the input ends of the two air nozzles are fixedly connected with the first output end of the air pump, and the output ports of the two air nozzles are arranged at an obtuse angle with the road surface to be marked;

[0029] The telescopic air cylinder is arranged on the side of the mounting frame away from the air pump, and the input end of the telescopic air cylinder is in communication with the second output end of the air pump, and the output end is fixedly connected with the peripheral surface of the mounting sleeve, for driving the mounting sleeve to reciprocate along the length direction of the mounting frame.

[0030] Further, the mounting frame is provided with a sliding groove along the length direction thereof, and the longitudinal section profile of the sliding groove is consistent with the section profile of the mounting sleeve.

[0031] The one or more technical solutions provided in the embodiment of the utility model have at least the following technical effects or advantages:

[0032] The stirring assembly in the application ensures uniform raw materials in the storage tank, and avoids uneven marking. The raw materials are extracted by the sliding membrane pump, transported to the spray head through the connecting pipe, and the spray head is kept at an angle with the road surface to ensure clear and continuous marking. The cleaning assembly works before marking, removes impurities on the road surface, and ensures the marking quality. The working surface of the cleaning assembly is arranged horizontally with the spray head, realizing seamless connection of cleaning and marking. The vibration assembly assists the raw materials to be sprayed out of the spray head, preventing blockage and line breakage. The sliding rod is slidingly connected with the movable frame, and the moving range of the spray head can be adjusted according to the marking width requirement, and the marking width is accurately controlled. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the description of the embodiments of the utility model or the prior art. Obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.

[0034] Figure 1 The structural schematic diagram provided for the embodiment of the application;

[0035] Figure 2 The structural schematic diagram in the state of looking up provided for the embodiment of the application;

[0036] Figure 3 The structural schematic diagram in the state of looking up provided for the embodiment of the application;

[0037] Figure 4 The structural schematic diagram of the connecting rod and the stirring rod provided for the embodiment of the application.

[0038] Icon: 10 - mobile frame; 11 - storage tank; 12 - sliding film pump; 13 - connecting pipe; 14 - spray head; 15 - sliding rod; 20 - stirring assembly; 21 - stirring motor; 22 - connecting rod; 23 - stirring rod; 231 - through hole; 30 - vibration assembly; 31 - support frame; 32 - vibration motor; 33 - vibration rod; 34 - rubber pad; 40 - cleaning assembly; 41 - mounting frame; 411 - sliding groove; 42 - mounting sleeve; 43 - baffle; 44 - air pump; 45 - air nozzle; 46 - telescopic air cylinder. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0040] In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. The terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. In addition, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0041] In combination Figures 1-4As shown, a road automatic marking device includes a mobile frame 10, a storage tank 11, a stirring assembly 20, a vibration assembly 30, a sliding film pump 12, a connecting pipe 13, a spray head 14, a cleaning assembly 40 and two sliding rods 15; the mobile frame 10 is horizontally placed on the working surface; the storage tank 11 is fixedly installed on the mobile frame 10, the sliding film pump 12 is arranged at the bottom of the mobile frame 10, the input end of the sliding film pump 12 is in communication with the discharge port of the storage tank 11, the output end of the sliding film pump 12 is in communication with the input end of the connecting pipe 13, the output end of the connecting pipe 13 is in communication with the input end of the spray head 14, the working end face of the spray head 14 is always arranged at an angle with the road surface to be marked; the stirring assembly 20 is installed on the storage tank 11 and used for stirring the raw material in the storage tank 11; the cleaning assembly 40 is arranged at the bottom of the vehicle head of the mobile frame 10, the working face of the cleaning assembly 40 is arranged at an angle with the road surface to be marked and horizontally arranged with the working end face of the spray head 14; the vibration assembly 30 is arranged at the bottom of the mobile frame 10, and the working end of the vibration assembly 30 is in contact with the peripheral part of the connecting pipe 13; one end of the two sliding rods 15 is slidably connected with the vehicle head of the mobile frame 10 and can be close to or away from the vehicle length axis of the mobile frame 10, and the other end is close to the axis of the mobile frame 10.

[0042] In the above scheme, the raw material (such as marking paint) is stored in the storage tank 11. When the device starts to work, the stirring assembly 20 is started to ensure that the raw material in the storage tank 11 is uniform, avoiding uneven marking caused by sedimentation. The sliding film pump 12 draws the uniformly stirred raw material from the discharge port of the storage tank 11 and delivers it to the spray head 14 through the connecting pipe 13. The working end face of the spray head 14 is always arranged at an angle with the road surface to be marked, ensuring that the sprayed raw material can form a clear and continuous line. Before marking, the cleaning assembly 40 first cleans the road surface to be marked to remove dust, oil stains and other impurities, ensuring the marking quality. The working face of the cleaning assembly 40 is arranged at an angle with the road surface to be marked and horizontally arranged with the working end face of the spray head 14, ensuring that cleaning and marking can seamlessly connect. The vibration assembly 30 is arranged at the peripheral part of the connecting pipe 13, which helps the raw material to be sprayed out of the spray head 14 better through vibration, avoiding the phenomenon of blockage or line breakage. One end of the two sliding rods 15 is slidably connected with the vehicle head of the mobile frame 10 and can be adjusted according to the needs of marking width. By moving close to or away from the vehicle length axis of the mobile frame 10, the sliding rod 15 can limit the movement range of the spray head 14, thereby controlling the width of the marking.

[0043] The stirring assembly 20 comprises a stirring motor 21, a connecting rod 22 and a plurality of stirring rods 23. The stirring motor 21 is installed on the top of the storage tank 11, and its output end extends into the interior of the storage tank 11. One end of the connecting rod 22 is fixedly connected with the output end of the stirring motor 21, and the other end thereof extends toward the tank bottom of the storage tank 11. The plurality of stirring rods 23 are arranged at equal intervals along the axial length direction of the connecting rod 22, and one end of each of the plurality of stirring rods 23 is fixedly connected with the peripheral portion of the connecting rod 22, and the other end thereof extends toward the inner wall of the storage tank 11.

[0044] In the above scheme, the stirring motor 21 is installed on the top of the storage tank 11, and its output end extends into the interior of the storage tank 11 through a sealing ring to avoid leakage of raw materials. When the motor is started, its output end starts to rotate, driving the connecting rod 22 to rotate together. The other end of the connecting rod 22 extends toward the tank bottom of the storage tank 11, so that the driving force of the stirring motor 21 can be transmitted to the deep part of the storage tank 11. The other end of the stirring rod 23 extends toward the inner wall of the storage tank 11, forming omnidirectional stirring of the raw materials. The length and angle of the stirring rod 23 are designed so that they can reach every corner in the storage tank 11, ensuring sufficient mixing of the raw materials, avoiding precipitation and stratification, reducing deposition and caking of the raw materials in the storage tank 11, and ensuring the performance and quality of the raw materials during scribing.

[0045] The plurality of stirring rods 23 are provided with a plurality of through holes 231 in a spiral manner from inside to outside along the radial direction thereof, and the hole diameter of the plurality of through holes 231 is greater than the radius of the stirring rod 23.

[0046] In the above scheme, when the stirring motor 21 drives the stirring rod 23 to rotate, the raw materials in the storage tank 11 are subjected to the shearing force and centrifugal force of the stirring rod 23. The spiral through holes 231 can guide the raw materials to flow between the inside and outside of the stirring rod 23 and form a vortex effect, enhancing the mixing effect of the raw materials, especially in the area near the stirring rod 23, so that the raw materials can be more fully stirred and dispersed. The provision of the through holes 231 increases the contact area between the stirring rod 23 and the raw materials, preventing the raw materials from clogging the stirring rod 23 during stirring, so that the stirring force can be more uniformly distributed in the raw materials. At the same time, the through holes 231 can also promote turbulent motion inside the raw materials, further improving the stirring efficiency.

[0047] The vibration assembly 30 comprises a support frame 31, a vibration motor 32, a vibration rod 33 and a rubber pad 34; the support frame 31 of the frame structure is fixedly arranged at the bottom of the mobile frame 10; the vibration motor 32 is vertically arranged in the interior of the support frame 31, the output end of the vibration motor 32 faces the bottom surface of the mobile frame 10 and is located beside the connecting pipe 13; one end of the vibration rod 33 is fixedly arranged at the output end of the vibration motor 32, and the other end of the vibration rod 33 is close to the peripheral part of the connecting pipe 13; one side of the rubber pad 34 is fixedly connected with the end of the vibration rod 33 close to the connecting pipe 13, and the opposite side of the rubber pad 34 is close to the peripheral surface of the connecting pipe 13.

[0048] In the above scheme, when the vibration motor 32 is started, the output end thereof generates high-frequency vibration, and the vibration is transmitted to the rubber pad 34 and the connecting pipe 13 through the vibration rod 33. When the raw material in the connecting pipe 13 is pushed by the synovial membrane pump 12 and sprayed out through the spray head 14, the vibration generated by the vibration assembly 30 can help the raw material to better adhere to the road surface, and at the same time, the vibration generated by the vibration motor 32 can also prevent the raw material from being blocked in the connecting pipe 13, thereby ensuring the continuity and stability of the marking process. The rubber pad 34 acts as an elastic medium, can absorb and transmit the vibration energy of the vibration motor 32, and at the same time, can play a role in buffering and damping, thereby reducing the damage of the vibration to the connecting pipe 13 and the spray head 14, and improving the reliability and service life of the equipment. The staff can also adjust the vibration frequency and amplitude of the vibration motor 32 and other parameters to achieve the best marking effect of different raw materials.

[0049] The cleaning assembly 40 comprises a baffle 43, a mounting frame 41, an air pump 44, a mounting sleeve 42, at least two air nozzles 45 and a telescopic air cylinder 46; the baffle 43 is fixedly arranged at the inner side of the bottom of the vehicle head of the mobile frame 10 at both ends of the plate length of the baffle 43, the middle part of the baffle 43 is bent towards the shaft center of the mobile frame 10, and an arc-shaped path is formed; the mounting frame 41 is fixedly arranged at the bottom of the vehicle head of the mobile frame 10 and located at the front side of the baffle 43; the mounting sleeve 42 is slidingly arranged on the mounting frame 41, and the length of the mounting sleeve 42 is less than and / or equal to one third of the length of the mounting frame 41; the air pump 44 is fixedly arranged on one side of the mounting frame 41 close to the inner side of the vehicle head of the mobile frame 10; the two air nozzles 45 are arranged at intervals along the length direction of the mounting sleeve 42, the input ends of the two air nozzles 45 are fixedly connected with the first output end of the air pump 44, and the output ports of the two air nozzles 45 are arranged at an obtuse angle with the place to be marked on the road surface; the telescopic air cylinder 46 is arranged on the side of the mounting frame 41 away from the air pump 44, the input end of the telescopic air cylinder 46 is in communication with the second output end of the air pump 44, and the output end of the telescopic air cylinder 46 is fixedly connected with the peripheral surface of the mounting sleeve 42, for driving the mounting sleeve 42 to reciprocally slide along the length direction of the mounting frame 41.

[0050] The baffle 43 is fixedly arranged at the inner side of the bottom of the vehicle head of the moving frame 10, and the arc-shaped path design can guide the airflow or dust generated during the vehicle driving to be dispersed to the two sides of the road, thereby avoiding pollution to the marking area. The air pump 44 is fixedly arranged at one side of the mounting bracket 41 close to the inner side of the vehicle head of the moving frame 10, and provides air source for the cleaning assembly 40. The air pump 44 has two output ends, which are connected to the two air nozzles 45 and the telescopic cylinder 46 respectively. When the air pump 44 is started, high-pressure gas is output through the air nozzle 45 to blow the road surface at a certain angle, so as to blow away the dust, sundries and the like from the marking area. The output port of the air nozzle 45 is arranged at an obtuse angle with the road surface to be marked, which can ensure the blowing effect while reducing the direct impact of the gas on the marking area. When the telescopic cylinder 46 receives the air supply of the air pump 44, it starts to reciprocatingly extend and retract, drives the mounting sleeve 42 to slide along the length direction of the mounting bracket 41, so that the blowing range of the air nozzle 45 can cover a wider road surface area, and the cleaning efficiency is improved. The mounting sleeve 42 is slidably arranged on the mounting bracket 41, and the length of the mounting sleeve 42 is less than and / or equal to one third of the length of the mounting bracket 41, so that the mounting sleeve 42 does not occupy too much space during the sliding process, and the stability and reliability of the air nozzle 45 and the telescopic cylinder 46 are ensured.

[0051] The mounting bracket 41 is provided with a sliding groove 411 in the length direction thereof, and the longitudinal section profile of the sliding groove 411 is consistent with the section profile of the mounting sleeve 42.

[0052] In the above scheme, when the telescopic cylinder 46 drives the mounting sleeve 42 to slide along the length direction of the mounting bracket 41, the section of the mounting sleeve 42 is tightly fitted with the profile of the sliding groove 411, so as to prevent the mounting sleeve 42 from shaking or deviating during the sliding process. The provision of the sliding groove 411 not only provides a sliding track for the mounting sleeve 42, but also plays a guiding and limiting role, thereby improving the stability of the cleaning assembly 40 during the sliding process, and further ensuring the consistency and uniformity of the cleaning effect, and improving the quality and efficiency of the marking operation.

[0053] The various embodiments in the specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other, and each embodiment mainly describes the difference from other embodiments.

[0054] The above examples are only used to illustrate the technical solutions of the present application, and are not limited to the present application; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the present application.

Claims

1. A road automatic line marking apparatus characterized by comprising: The utility model provides a kind of line marking machine, including mobile frame (10), storage tank (11), stirring assembly (20), vibration assembly (30), sliding film pump (12), connecting pipe (13), spray head (14), cleaning assembly (40) and two slide bars (15); The mobile frame (10) is horizontally placed on the working surface; The storage tank (11) is fixedly installed on the mobile frame (10), the sliding film pump (12) is arranged at the bottom of the mobile frame (10), and the input end of the sliding film pump (12) is communicated with the discharge port of the storage tank (11), the output end of the sliding film pump (12) is communicated with the input end of the connecting pipe (13), the output end of the connecting pipe (13) is communicated with the input end of the spray head (14), and the working end face of the spray head (14) is always arranged at an angle with the road surface to be marked. The stirring assembly (20) is installed on the storage tank (11) for stirring the raw materials in the storage tank (11). The cleaning assembly (40) is arranged at the bottom of the vehicle head of the mobile frame (10), and the working face of the cleaning assembly (40) is arranged at an angle with the road surface to be marked and horizontally with the working end face of the spray head (14). The vibration assembly (30) is arranged at the bottom of the mobile frame (10), and the working end of the vibration assembly (30) is in contact with the periphery of the connecting pipe (13). One end of the two slide bars (15) is slidably connected with the vehicle head of the mobile frame (10), and the other end is close to or away from the axis of the mobile frame (10).

2. The automatic line marking apparatus for a road according to claim 1, characterized by, The stirring assembly (20) includes a stirring motor (21), a connecting rod (22) and a plurality of stirring rods (23). The stirring motor (21) is installed at the top of the storage tank (11), and the output end thereof extends into the storage tank (11). One end of the connecting rod (22) is fixedly connected with the output end of the stirring motor (21), and the other end thereof extends to the bottom of the storage tank (11). A plurality of the stirring rods (23) are arranged at equal intervals along the axial length direction of the connecting rod (22), one end of each of the plurality of stirring rods (23) is fixedly connected with the periphery of the connecting rod (22), and the other end thereof extends to the inner wall of the storage tank (11).

3. The automatic line marking apparatus for road use according to claim 2, characterized by A plurality of through holes (231) are spirally arranged from inside to outside along the radial direction of the stirring rod (23), and the diameter of each of the plurality of through holes (231) is greater than the radius of the stirring rod (23).

4. The automatic line marking apparatus for road use according to Claim 1, wherein The vibration assembly (30) includes a support frame (31), a vibration motor (32), a vibration rod (33) and a rubber pad (34). The support frame (31) is fixedly arranged at the bottom of the mobile frame (10). The vibration motor (32) is vertically arranged in the support frame (31), the output end of the vibration motor (32) faces the bottom surface of the mobile frame (10), and is located beside the connecting pipe (13). One end of the vibration rod (33) is fixedly arranged at the output end of the vibration motor (32), and the other end is close to the peripheral part of the connecting pipe (13); One side of the rubber pad (34) is fixedly connected with one end of the vibration rod (33) close to the connecting pipe (13), and the opposite side is close to the peripheral surface of the connecting pipe (13).

5. The automatic line marking apparatus for road use according to Claim 1, wherein The cleaning assembly (40) comprises a baffle (43), a mounting frame (41), an air pump (44), a mounting sleeve (42), at least two air nozzles (45) and a telescopic air cylinder (46); The baffle (43) is fixedly arranged at the bottom of the moving frame (10) on both ends of the plate length, and the middle part of the baffle (43) is curved towards the shaft of the moving frame (10), forming an arc path. The mounting frame (41) is fixedly arranged at the bottom of the moving frame (10) and located in front of the baffle (43). The mounting sleeve (42) is slidably arranged on the mounting frame (41), and the length of the mounting sleeve (42) is less than and / or equal to one third of the length of the mounting frame (41). The air pump (44) is fixedly arranged on one side of the mounting frame (41) close to the inner side of the head of the moving frame (10). Two air nozzles (45) are arranged in the length direction of the mounting sleeve (42) and spaced apart, and the input ends of the two air nozzles (45) are fixedly connected with the first output end of the air pump (44), and the output ports of the two air nozzles (45) are arranged at an obtuse angle with the place to be marked on the road surface. The telescopic air cylinder (46) is arranged on the side of the mounting frame (41) away from the air pump (44), and the input end of the telescopic air cylinder (46) is in communication with the second output end of the air pump (44), and the output end is fixedly connected with the peripheral surface of the mounting sleeve (42), for driving the mounting sleeve (42) to reciprocate along the length direction of the mounting frame (41).

6. The automatic line marking apparatus for road use according to claim 5, characterized by The mounting frame (41) is provided with a sliding groove (411) in the length direction, and the longitudinal section profile of the sliding groove (411) is consistent with the section profile of the mounting sleeve (42).

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