A spray marking device for road construction

Abstract

The present invention relates to the technical field of road construction, and in particular to a spray marking device for road construction, which includes a frame, a template mechanism and a height adjustment mechanism. The present invention sets the template on a coil and switches the shape of a reserved hole facing a notch through a driving mechanism. The present invention can carry a larger number of templates at the same time, making the marking work more convenient and improving the marking efficiency. The marking efficiency is improved by setting multiple template mechanisms and multiple injection components. By setting an absorber in the reserved hole of the coil and cooperating with an ejection component, the paint can be more conveniently transferred to the road, thereby improving the marking efficiency. The paint on the surface of the shielding body is scraped off by a scraping component to avoid wasting the paint. By adjusting the component, the downward pressure of the ball at the edge of the reserved hole is less than the downward pressure of the ball at the middle of the reserved hole, thereby avoiding the diffusion of the paint at the edge of the reserved hole, and then the edge of the marked character or pattern is clearer, optimizing the marking effect.

Description

Technical Field

[0001] The invention relates to the technical field of road construction, and in particular to a spray marking device for road construction. Background Art

[0002] Road marking construction refers to the work of drawing markings on the road. It is to improve the traffic safety and traffic smoothness of the road, and facilitate drivers to correctly judge the lane position and driving direction. Road marking construction is also one of the important links to ensure traffic safety and regulate traffic order. The construction process of road marking mainly includes several steps such as preparation, marking construction, maintenance and management. In the preparation stage, the road surface needs to be cleaned, degreased, and dusted to ensure that the road surface is clean, dry, and flat; in the marking construction stage, it is necessary to select suitable marking materials and marking machines, and mark the lines according to the specified line width and spacing; in the maintenance and management stage, the newly drawn lines need to be maintained to maintain the clarity and reflective effect of the lines.

[0003] There are two main construction schemes for marking complex characters or patterns using the marking device in the prior art. One is to set up multiple nozzles and control the opening and closing of valves corresponding to the nozzles to spray and mark the complex patterns. However, due to the limited number of nozzles, the clarity of the sprayed patterns is poor. The other is to use a template to block the positions that do not need to be sprayed, and then spray the leaked parts. After the paint cools and sets, the template is removed. However, when spraying and marking multiple patterns using this method, multiple templates need to be carried, which is inconvenient to operate and has low marking efficiency. To this end, a Chinese patent document with publication number CN118422560A discloses a municipal road traffic marking line marking device, which provides a polygonal template frame, and simultaneously installs a plurality of templates on the template frame. By driving the template frame to rotate, the template flush with the ground is replaced, so as to facilitate spraying of different patterns. However, in this scheme, the number of standard-sized templates installed on the template frame is small. When the number of templates is increased, the volume of the spray marking device is large and the movement is more difficult. In addition, when spraying, part of the paint is sprayed on the template, resulting in a problem of wasting paint. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention proposes a spray marking device for road construction, which solves the problems of small number of templates and inconvenience in carrying, as well as poor spraying effect and waste of paint.

[0005] A spray marking device for road construction of the present invention adopts the following technical solution, including:

[0006] The frame is capable of walking on the ground; a notch is provided in the middle of the lower part of the frame;

[0007] The template mechanism comprises a support plate and a coil; the support plate is vertically arranged and fixedly connected to the vehicle frame, the support plate is rotatably connected to a first rotating wheel and a second rotating wheel, the axes of the first rotating wheel and the second rotating wheel extend in the left-right direction, and two first rotating wheels are arranged at intervals in the front-back direction; the second rotating wheel is arranged below the first rotating wheel and is located between the two first rotating wheels; the coil is kept in a tensioned state, the coil is wound around the second rotating wheel, and the two ends of the coil are respectively wound around the two first rotating wheels, and a plurality of reserved holes are opened on the coil, and the reserved holes are in the shape of patterns or characters that need to be marked; the second rotating wheel is directly opposite to the notch; the first rotating wheel is connected to a driving motor, and the driving motor is used to drive the first rotating wheel to rotate; a transfer mechanism is arranged on the support plate, and the transfer mechanism is used to make the paint pass through the reserved holes and the notch and print on the road surface;

[0008] The height adjustment mechanism is used to adjust the vertical height of the support plate.

[0009] Optionally, the coil includes a shielding body and an absorber, the reserved hole is opened in the shielding body, the absorber is installed in the reserved hole, and the absorber can absorb the paint; the transfer mechanism includes an injection component, and the injection component is used to apply the paint to the absorber.

[0010] Optionally, two injection assemblies are disposed between any second mounting post and the first mounting post, and the two injection assemblies are respectively located on two sides of the coil.

[0011] Optionally, the transfer mechanism further includes a scraping assembly, which is located between the injection assembly and the second rotating wheel, and is used to scrape the coating on the shielding body toward the absorbing body.

[0012] Optionally, the transfer mechanism further includes an ejection assembly, which is disposed on the second rotating wheel and enables the absorbent to extend out of the reserved hole.

[0013] Optionally, a plurality of slide grooves are provided on the peripheral wall of the second rotating wheel in the axial direction, and the slide grooves extend in the circumferential direction; the ejection assembly comprises a first plate, a second plate and a plurality of ejection units; the first plate and the second plate are both rotatably mounted on the second mounting column, the first plate is located between the second rotating wheel and the support plate, and the second plate is located on the side of the second rotating wheel away from the support plate; the plurality of ejection units are evenly distributed along the circumference of the second rotating wheel; the ejection unit comprises an iron wire, a plurality of distance adjustment springs and a plurality of pins, and the number of the pins is consistent with the number of slide grooves; the iron wire extends in the left and right directions, and the two ends are fixedly connected to the first plate and the second plate respectively; the plurality of pins are arranged at intervals along the axial direction of the second rotating wheel, and the pins extend in the radial direction of the second rotating wheel; a through hole is provided in the middle of the axial direction of the pins, and the iron wire passes through the through holes of the plurality of pins in sequence; one end of each pin facing the axis line of the second rotating wheel is slidably mounted in the slide groove, and is sleeved with a distance adjustment spring; the distance adjustment spring has a tendency to make the pins move away from the axis line of the second rotating wheel; an adjustment assembly is provided on the second mounting column, and the adjustment assembly is used to adjust the distance between the first plate and the second plate and limit the rotation of the second plate.

[0014] Optionally, two template mechanisms are symmetrically arranged along the left-right direction.

[0015] Optionally, a threaded groove is provided at one end of the second mounting column away from the support plate; the adjustment assembly includes a knob, the knob is screwed on the second mounting column, the second plate is fixedly connected to a swivel, and the swivel is synchronously rotatably connected to the knob; the second plate is located between the second rotating wheel and the knob.

[0016] Optionally, the injection assembly includes an injection body, an injection port, a valve and a pipeline; the injection body is fixedly connected to the support plate; the injection port is arranged on the side of the injection body facing the coil; a cavity is opened in the injection body, one side of the cavity is connected to a material storage box through a pipeline, the material storage box is filled with paint, and the other end of the cavity is connected to the injection port; the valve is used to control the on-off state of the pipeline and the material storage box;

[0017] The scraper assembly includes a third mounting column and a scraper ring. The third mounting column is fixedly connected to a connecting rod. The other end of the connecting rod is rotatably mounted on the injection body. The scraper ring is rotatably mounted on the third mounting column. A torsion spring is arranged between the injection body and the connecting rod. The torsion spring makes the scraper ring tend to abut against the coil.

[0018] Optionally, the height adjustment mechanism includes a hydraulic push rod, an adjustment plate, a movable plate and a height adjustment spring; the movable plate can be slidably installed on the frame up and down, and the movable plate is arranged horizontally; the support plate is fixedly connected to the bottom of the movable plate; the adjustment plate is arranged at intervals above the movable plate, and a plurality of height adjustment springs are vertically arranged between the adjustment plate and the movable plate, and the plurality of height adjustment springs are arranged at intervals along the front and rear directions, and the two ends of the height adjustment spring are respectively connected to the adjustment plate and the movable plate; the fixed end of the hydraulic push rod is fixedly connected to the frame, and the movable end is fixedly connected to the adjustment plate.

[0019] The beneficial effects of the present invention are as follows: a spray marking device for road construction of the present invention sets a template on a coil, and drives the coil to rotate through a driving mechanism via a first mounting column and a first rotating wheel, thereby switching the shape of a reserved hole facing the notch. Compared with the prior art, the present invention can carry a larger number of templates at the same time under the premise of a fixed volume, making the marking work more convenient and improving the marking efficiency.

[0020] Furthermore, the efficiency of marking is improved by setting up multiple template mechanisms and multiple injection components. By setting an absorber in the reserved hole of the coil, in conjunction with the ejection component, the characters or patterns of the marking can be more conveniently transferred to the road, further improving the efficiency of marking. And by setting up a scraper component, the paint on the surface of the shielding body is scraped off to avoid wasting paint. By setting up an adjustment component, the degree of downward pressure of the marble at the edge of the reserved hole is less than the degree of downward pressure of the marble in the middle of the reserved hole, thereby avoiding the diffusion of paint at the edge of the reserved hole, and then the edges of the characters or patterns of the marking are clearer, optimizing the marking effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 This is a schematic diagram of the overall structure of a spray marking device for road construction according to the present invention;

[0023] Figure 2 A side view of a spray marking device for road construction according to the present invention;

[0024] Figure 3 for Figure 2 Middle AA section cutaway view;

[0025] Figure 4 It is an exploded schematic diagram of a template mechanism and a transfer mechanism in a spray marking device for road construction of the present invention;

[0026] Figure 5 for Figure 4 Side view of the middle structure in its natural state;

[0027] Figure 6 for Figure 5 Middle BB section cutaway view;

[0028] Figure 7 for Figure 4 Front view of the middle structure during the marking process;

[0029] Figure 8 for Figure 7 Middle CC section cutaway view;

[0030] Fig. 9 for Figure 8 Enlarged image at the center X.

[0031] In the figure:

[0032] 100, frame; 111, front wheel; 112, rear wheel; 113, notch; 114, handlebar;

[0033] 200, template mechanism; 210, support plate; 211, first mounting column; 212, second mounting column; 213, first rotating wheel; 214, second rotating wheel; 215, driving motor; 216, slideway; 220, coil; 221, reserved hole; 222, shielding body; 223, absorbent body;

[0034] 300, transfer mechanism; 310, injection assembly; 311, injection body; 312, pipeline; 320, scraper assembly; 321, third mounting column; 322, scraper ring; 330, ejector assembly; 331, first plate; 332, second plate; 333, iron wire; 334, distance adjustment spring; 335, marble; 340, knob;

[0035] 400, height adjustment mechanism; 410, hydraulic push rod; 420, adjustment plate; 430, moving plate; 440, height adjustment spring. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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 making creative work are within the scope of protection of the present invention.

[0037] like Figures 1 to 9 As shown, a spray marking device for road construction provided by an embodiment of the present invention includes a frame 100, a template mechanism 200, a transfer mechanism 300 and a height adjustment mechanism 400;

[0038] The frame 100 has two front wheels 111 at the left and right ends of the front side, and the front wheels 111 are steerable; two rear wheels 112 are rotatably mounted at the left and right ends of the rear side of the frame 100; a handle 114 is provided at the rear side of the frame 100; and a notch 113 is provided in the middle of the lower part of the frame 100;

[0039] The template mechanism 200 includes a support plate 210 and a coil 220; the support plate 210 is vertically arranged and fixedly connected to the frame 100, the support plate 210 is rotatably connected to a first mounting column 211, and the support plate 210 is fixedly connected to a second mounting column 212; the first mounting column 211 and the second mounting column 212 both extend in the left-right direction, and two first mounting columns 211 are arranged at intervals in the front-back direction; the second mounting column 212 is arranged below the first mounting column 211 and is located between the two first mounting columns 211, and the first mounting column 211 is synchronously rotatably mounted with a first rotating wheel 213; the second mounting column 212 is rotatably mounted A second rotating wheel 214 is installed; the coil 220 is kept in a tensioned state, the coil 220 is wound around the second rotating wheel 214, and the two ends of the coil 220 are respectively wound around the two first rotating wheels 213, and a plurality of reserved holes 221 are opened on the coil 220, and the reserved holes 221 are in the shape of patterns or characters that need to be marked; the second rotating wheel 214 is directly opposite to the notch 113; the first mounting column 211 is connected to a driving motor 215, and the driving motor 215 is used to drive the first mounting column 211 to rotate; a transfer mechanism 300 is arranged on the support plate 210, and the transfer mechanism 300 is used to make the paint pass through the reserved holes 221 and the notch 113 and print on the road surface;

[0040] The height adjustment mechanism 400 is used to adjust the vertical height of the support plate 210 .

[0041] When in use, the first mounting column 211 is driven to rotate by the driving motor 215. When the first mounting column 211 rotates, the first rotating wheel 213 is driven to rotate synchronously, so that one end of the reserved hole 221 corresponding to the character or pattern to be printed is rotated to the gap 113, and the vertical height of the support plate 210 is adjusted by the height adjustment mechanism 400, so that one end of the reserved hole 221 extends out of the gap 113, and the frame 100 is pushed by the handle 114. While the frame 100 moves, the driving motor 215 drives the coil 220 to rotate, so that the reserved hole 221 gradually extends out of the gap 113 from one end to the other end; the transfer mechanism 300 allows the paint to pass through the reserved hole 221 and the gap 113, thereby completing the marking work of complex characters or patterns on the road surface.

[0042] The present invention opens the template on the coil 220, and drives the coil 220 to rotate through the driving motor 215 via the first mounting column 211 and the first rotating wheel 213, thereby switching the shape of the reserved hole 221 facing the notch 113. Compared with the prior art, the present invention can carry more templates at the same time under the premise of fixed volume, making the marking work more convenient and improving the marking efficiency.

[0043] In a further embodiment, the coil 220 includes a shielding body 222 and an absorbent body 223, the reserved hole 221 is opened in the shielding body 222, and the absorbent body 223 is installed in the reserved hole 221, and the absorbent body 223 can absorb the paint; the transfer mechanism 300 includes an injection component 310, and the injection component 310 is used to apply the paint to the absorbent body 223. The absorbent body 223 is a sponge, and the shielding body 222 is made of polyethylene material.

[0044] When marking, the coil 220 is driven to rotate by the driving motor 215 via the first mounting column 211 and the first rotating wheel 213, thereby switching the shape of the reserved hole 221 facing the notch 113. In the process of the required reserved hole 221 moving from the first rotating wheel 213 to the second rotating wheel 214, the injection assembly 310 applies the paint to the absorber 223, and the absorber 223 absorbs the paint. When the reserved hole 221 moves to the second rotating wheel 214, the height adjustment mechanism 400 makes the reserved hole 221 extend out of the notch 113 and contact the ground. As the frame 100 and the driving motor 215 rotate, the paint absorbed in the absorber 223 is gradually transferred to the road surface to complete the marking work.

[0045] In a further embodiment, two injection assemblies 310 are provided between any second mounting post 212 and the first mounting post 211, and the two injection assemblies 310 are respectively located on both sides of the coil 220. Thus, when the required reserved hole 221 moves from any side of the second rotating wheel 214 to the second rotating wheel 214, the absorber 223 can complete the material absorption work, and it is not necessary to move it through the second rotating wheel 214 to the side with the injection assembly 310 to complete the material absorption and then move it to the second rotating wheel 214 again, thereby reducing the workflow and improving the marking efficiency. In addition, paint is injected into the absorber 223 on both sides of the absorber 223 at the same time, ensuring that the absorber 223 absorbs the paint amount, while improving the efficiency of the absorber 223 absorbing the paint, further improving the marking efficiency.

[0046] In a further embodiment, the transfer mechanism 300 further includes a scraper assembly 320, which is located between the injection assembly 310 and the second rotating wheel 214, and is used to scrape the paint on the shielding body 222 toward the absorbent body 223. This reduces the amount of paint attached to the surface of the shielding body 222 and reduces the waste of paint.

[0047] In a further embodiment, the transfer mechanism 300 further includes an ejection assembly 330, which is disposed on the second rotating wheel 214, and the ejection assembly 330 enables the absorbent 223 to extend out of the reserved hole 221. Thus, when marking, the characters or patterns on the road are made clearer.

[0048] In a further embodiment, a plurality of slide grooves 216 are axially provided on the peripheral wall of the second rotating wheel 214, and the slide grooves 216 extend in the circumferential direction; the ejection assembly 330 includes a first plate 331, a second plate 332 and a plurality of ejection units; the first plate 331 and the second plate 332 are both rotatably mounted on the second mounting column 212, the first plate 331 is located between the second rotating wheel 214 and the support plate 210, and the second plate 332 is located on the side of the second rotating wheel 214 away from the support plate 210; the plurality of ejection units are uniformly distributed in the circumferential direction of the second rotating wheel 214; the ejection unit includes an iron wire 333, a plurality of distance adjustment springs 334 and a plurality of pins 335, and the number of the pins 335 is consistent with the number of the slide grooves 216; the iron wire 333 extends in the left-right direction The second mounting column 212 is provided with a plurality of pins 335 spaced apart along the axial direction of the second rotating wheel 214, and the pins 335 extend radially along the second rotating wheel 214; a through hole is provided in the middle of the axial direction of the pins 335, and the iron wire 333 passes through the through holes of the plurality of pins 335 in sequence; one end of each pin 335 facing the axis of the second rotating wheel 214 is slidably installed in the slide groove 216, and each pin 335 is sleeved with a distance adjustment spring 334; the distance adjustment spring 334 has a tendency to move the pins 335 away from the axis of the second rotating wheel 214; an adjustment component is provided on the second mounting column 212, and the adjustment component is used to adjust the distance between the first plate 331 and the second plate 332 and limit the rotation of the second plate 332.

[0049] When marking, the distance between the first plate 331 and the second plate 332 is adjusted by the adjustment component according to the pattern or character of the marking, so as to adjust the tension of the wire 333. When the distance between the first plate 331 and the second plate 332 is at the maximum value, the ends of all the pins 335 away from the axis of the second rotating wheel 214 are flush and in contact with the side of the shielding body 222 facing the second rotating wheel 214. When the distance between the first plate 331 and the second plate 332 is reduced, the pins 335 can move along the radial direction of the second rotating wheel 214. Under the action of the adjusting spring 334, the ball 335 has a tendency to move away from the axis of the second rotating wheel 214. With the rotation of the first mounting column 211, the reserved hole 221 on the coil 220 rotates to the second rotating wheel 214. At this time, the ball 335 facing the reserved hole 221 extends toward the reserved hole 221 under the action of the distance adjusting spring 334, and pushes out the absorbent body 223 in the reserved hole 221, so that it abuts against the road. With the rotation of the first mounting column 211, the paint in the absorbent body 223 is transferred to the road surface to complete the marking work.

[0050] When the pins 335 push out the absorbent body 223, the pins 335 facing the reserved hole 221 extend out, and the pins 335 facing the shielding body 222 are blocked, the wire 333 is deformed, and the shape of the wire 333 tends to be consistent with the connecting line of multiple pins 335. At this time, the pins 335 at the edge and middle positions of the reserved hole 221 are in an ejected state, but the pins 335 at the edge of the reserved hole 221 are pressed down less than the pins 335 at the middle position of the reserved hole 221, thereby avoiding the diffusion of paint at the edge of the reserved hole 221 to affect the marking effect, thereby making the edges of the marked characters or patterns clearer.

[0051] In a further embodiment, two template mechanisms 200 are symmetrically arranged in the left and right directions. Thus, marking can be performed in the left and right directions at the same time, thereby improving marking efficiency. Or, when marking is performed in one template mechanism 200, the coil 220 in the other template mechanism 200 is switched and filled, so as to facilitate the next spraying and marking work, thereby further improving marking efficiency.

[0052] In a further embodiment, a threaded groove is provided at one end of the second mounting column 212 away from the support plate 210; the adjustment assembly includes a knob 340, which is screwed onto the second mounting column 212, and the second plate 332 is fixedly connected with a swivel, which is synchronously rotatably connected to the knob 340; the second plate 332 is located between the second rotating wheel 214 and the knob 340.

[0053] In a further embodiment, the injection assembly 310 includes an injection body 311, an injection port, a valve and a pipe 312; the injection body 311 is fixedly connected to the support plate 210; the injection port is arranged on the side of the injection body 311 facing the coil 220; a cavity is opened in the injection body 311, one side of the cavity is connected to a storage box through a pipe 312, the storage box is filled with paint, and the other end of the cavity is connected to the injection port; the valve is used to control the on and off state of the pipe 312 and the storage box; the scraper assembly 320 includes a third mounting column 321 and a scraper ring 322, the third mounting column 321 is fixedly mounted on the support plate 210, and the scraper ring 322 is rotatably mounted on the third mounting column 321; the scraper ring 322 abuts against the coil 220.

[0054] In a further embodiment, the height adjustment mechanism 400 includes a hydraulic push rod 410, an adjustment plate 420, a movable plate 430 and a height adjustment spring 440; the movable plate 430 can be slidably installed on the frame 100 up and down, and the movable plate 430 is horizontally arranged; the support plate 210 is fixedly connected to the bottom of the movable plate 430; the adjustment plate 420 is arranged at intervals above the movable plate 430, and a plurality of height adjustment springs 440 are vertically arranged between the adjustment plate 420 and the movable plate 430, and the plurality of height adjustment springs 440 are arranged at intervals along the front and rear directions, and the two ends of the height adjustment spring 440 are respectively connected to the adjustment plate 420 and the movable plate 430; the fixed end of the hydraulic push rod 410 is fixedly connected to the frame 100, and the movable end is fixedly connected to the adjustment plate 420.

[0055] When marking, the adjustment plate 420 is driven downward by the hydraulic push rod 410. While the adjustment plate 420 moves downward, the height adjustment spring 440 pushes the movable plate 430 to move downward, thereby causing the support plate 210 to move downward, and finally causing the lowest point of the coil 220 to press against the road. As the first rotating wheel 213 rotates, the coil 220 is driven to move to complete the marking work. By arranging a plurality of height adjustment springs 440 in the front and rear directions, the movable plate 430 is kept in a horizontal state, thereby solving the problem of the support plate 210 being tilted, resulting in poor marking effect.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A spray marking device for road construction, characterized in that: include: The frame is capable of walking on the ground; a notch is provided in the middle of the lower part of the frame; Formwork structure, including support plate and coiled material; The support plate is vertically arranged and fixedly connected to the frame. The support plate is rotatably connected to the first mounting column, and the support plate is fixedly connected to the second mounting column. The first mounting column and the second mounting column both extend in the left-right direction, and two first mounting columns are arranged at intervals in the front-back direction; the second mounting column is arranged below the first mounting column and is located between the two first mounting columns, and the first mounting column is synchronously rotatably installed with the first rotating wheel; the second mounting column is rotatably installed with the second rotating wheel; the coil is kept in a tensioned state, the coil is wound around the second rotating wheel, and the two ends of the coil are respectively wound around the two first rotating wheels, and a plurality of reserved The reserved hole is a pattern or character shape that needs to be marked; the second rotating wheel is directly opposite to the notch; the first rotating wheel is connected to a driving motor, and the driving motor is used to drive the first rotating wheel to rotate; a transfer mechanism is arranged on the support plate, and the transfer mechanism is used to make the paint pass through the reserved hole and the notch and print on the road surface; the coiled material includes a shielding body and an absorber, the reserved hole is opened in the shielding body, and the absorber is installed in the reserved hole, and the absorber can absorb the paint; the transfer mechanism includes an injection assembly and an ejection assembly, and the injection assembly is used to apply the paint to the absorber; a plurality of slide grooves are opened in the axial direction on the peripheral wall of the second rotating wheel, and the slide grooves extend in the circumferential direction; The ejection assembly is arranged on the second rotating wheel, and the ejection assembly makes the absorbent body extend out of the reserved hole. The ejection assembly comprises a first plate, a second plate and a plurality of ejection units; the first plate and the second plate are both rotatably mounted on the second mounting column, the first plate is located between the second rotating wheel and the support plate, and the second plate is located on the side of the second rotating wheel away from the support plate; the plurality of ejection units are evenly distributed along the circumference of the second rotating wheel; the ejection unit comprises an iron wire, a plurality of distance adjustment springs and a plurality of pins, and the number of the pins is consistent with the number of the slide grooves; the iron wire extends in the left and right directions, and the two ends are fixedly connected to the first plate and the second plate respectively; the plurality of pins are distributed along the second rotating wheel The balls are arranged at intervals in the axial direction, and extend radially along the second rotating wheel; a through hole is opened in the middle of the axial direction of the balls, and the iron wire passes through the through holes of the plurality of balls in sequence; each ball is slidably installed in the slide groove at one end facing the axis of the second rotating wheel, and is sleeved with a distance adjustment spring; the distance adjustment spring has a tendency to make the ball move away from the axis of the second rotating wheel, and when the ball pushes the absorber out, the degree of pressure of the ball at the edge of the reserved hole is less than the degree of pressure of the ball at the middle position of the reserved hole; an adjustment component is arranged on the second mounting column, and the adjustment component is used to adjust the distance between the first plate and the second plate and limit the rotation of the second plate; The height adjustment mechanism is used to adjust the vertical height of the support plate.

2. A spray marking device for road construction according to claim 1, characterized in that: Two injection components are arranged between any second installation column and the first installation column, and the two injection components are respectively located on two sides of the coil.

3. A spray marking device for road construction according to claim 2, characterized in that: The transfer mechanism also includes a scraper assembly, which is located between the injection assembly and the second rotating wheel, and is used for scraping the coating on the shielding body toward the absorbing body.

4. A spray marking device for road construction according to claim 1, characterized in that: Two template mechanisms are symmetrically arranged along the left-right direction.

5. A spray marking device for road construction according to claim 1, characterized in that: A threaded groove is provided at one end of the second mounting column away from the support plate; the adjustment component includes a knob, which is screwed on the second mounting column, and the second plate is fixedly connected to a rotating ring, which is synchronously rotatably connected to the knob; the second plate is located between the second rotating wheel and the knob.

6. A spray marking device for road construction according to claim 5, characterized in that: The injection assembly includes an injection body, an injection port, a valve and a pipeline; the injection body is fixedly connected to the support plate; the injection port is arranged on the side of the injection body facing the coil; a cavity is provided in the injection body, one side of the cavity is connected to a material storage box through a pipeline, the material storage box is filled with paint, and the other end of the cavity is connected to the injection port; the valve is used to control the on-off state of the pipeline and the material storage box; The scraper assembly includes a third mounting column and a scraper ring. The third mounting column is fixedly connected to a connecting rod. The other end of the connecting rod is rotatably mounted on the injection body. The scraper ring is rotatably mounted on the third mounting column. A torsion spring is arranged between the injection body and the connecting rod. The torsion spring makes the scraper ring tend to abut against the coil.

7. A spray marking device for road construction according to claim 1, characterized in that: The height adjustment mechanism includes a hydraulic push rod, an adjustment plate, a movable plate and a height adjustment spring; the movable plate can be slidably installed on the frame up and down, and the movable plate is arranged horizontally; the support plate is fixedly connected to the bottom of the movable plate; the adjustment plate is arranged at intervals above the movable plate, and a plurality of height adjustment springs are vertically arranged between the adjustment plate and the movable plate, and the plurality of height adjustment springs are arranged at intervals along the front and rear directions, and the two ends of the height adjustment spring are respectively connected to the adjustment plate and the movable plate; the fixed end of the hydraulic push rod is fixedly connected to the frame, and the movable end is fixedly connected to the adjustment plate.

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