A road surface line marking spraying device for road construction

Abstract

The present invention relates to the technical field of road construction, and particularly relates to a road surface line marking spraying device for road construction, including a line marking machine. One side of the line marking machine is fixedly connected with a support plate. Two symmetrically distributed boosting plates are slidably connected to the top surface of the support plate. An arrow frame is slidably connected between the two boosting plates. Two electric push rods for driving the boosting plates at corresponding positions to move are arranged on the top surface of the support plate. A top plate is fixed on the top surface of the arrow frame, and a spraying mechanism is arranged on the top surface of the top plate. In the present invention, a limiting frame is longitudinally slidably connected above the arrow frame, and a moving ring is horizontally slidably connected inside the limiting frame. The transmission gear drives the moving ring to move inside the limiting frame, so as to realize adjusting the spraying of paint by spray gun one on both sides, the middle part and the tip of the arrow frame. At the same time, the limiting frame drives spray gun two to move longitudinally back and forth, which is convenient for spraying paint on the extension track of the arrow line marking, and is beneficial to improving the spraying efficiency of the arrow line marking.

Description

Technical Field

[0001] The present invention relates to the technical field of road construction, and particularly relates to a pavement line marking spraying device for road construction. Background Art

[0002] Pavement line marking spraying refers to using lines, arrows, words, etc. to convey traffic information such as guidance, restriction, and warning to traffic participants on the road surface. Its function is to control and guide traffic. Among them, lines and arrows are the most common in road construction. When it is necessary to spray arrow markings on the road surface, it is necessary to manually paste tape on the road surface. The shape of the area surrounded by the tape is the shape of an arrow. The arrow markings are made by spraying paint into the surrounded area. This method requires a large amount of manpower, and the production efficiency of arrow markings is low. Or a arrow frame is pre-made, and then the arrow frame is placed on the road surface, and a spray gun is used to spray paint inside the arrow frame. However, the arrow frame is not convenient for making arrow markings with different inclination directions, which affects the production efficiency of arrow markings in pavement line markings. Summary of the Invention

[0003] In order to overcome the above technical problems, the purpose of the present invention is to provide a pavement line marking spraying device for road construction. By arranging an arrow frame on one side of the line marker, the arrow frame is convenient for simulating the shape of an arrow, and cooperating with a spray gun I to spray paint to make arrow line markings. A limiting frame is longitudinally slidably connected above the arrow frame, and a moving ring is horizontally slidably connected inside the limiting frame. The driving gear drives the moving ring to move inside the limiting frame, so as to adjust the spray gun I to spray paint on both sides, the middle part and the tip of the arrow frame. At the same time, the limiting frame drives the spray gun II to move longitudinally back and forth, which is convenient for spraying paint on the extension trajectory of the arrow line marking, and is beneficial to improving the spraying efficiency of the arrow line marking. The arrow frame is rotated and tilted by the electric push rod driving the booster plate at the corresponding position, which is convenient for making arrow line markings with different inclination angles.

[0004] The purpose of the present invention can be achieved by the following technical solutions:

[0005] A road surface line marking spraying device for road construction, including a line marking machine. One side of the line marking machine is fixedly connected with a support plate. The top surface of the support plate is slidably connected with two symmetrically distributed boosting plates. An arrow frame is slidably connected between the two boosting plates. The top surface of the support plate is provided with two electric push rods for driving the boosting plates at corresponding positions to move. The top surface of the arrow frame is fixedly connected with a top plate. The top surface of the top plate is provided with a spraying mechanism. The spraying mechanism includes a cross beam fixedly connected with the top plate. The bottom of the cross beam is slidably connected with a limiting frame. A moving ring is slidably connected inside the limiting frame. A transmission shaft is rotatably connected to the middle of the cross beam. The bottom of the transmission shaft is fixedly connected with a transmission gear for driving the moving ring to move. A limiting rod is arranged between the bottom end of the transmission shaft and the moving ring. One end of the moving ring is fixedly connected with a spray gun one. One end of the limiting frame is fixedly connected with a spray gun two. The top surface of the cross beam is fixedly connected with a chassis for driving the transmission shaft to rotate.

[0006] Furthermore: Positioning blocks one and two are respectively fixedly connected to both ends of the cross beam. The positioning block one is fixedly connected with the top plate. The limiting frame includes two transverse blocks. A longitudinal block is fixedly connected between the ends of the two transverse blocks. A first card slot is opened on the outer side of the longitudinal block. On one side of both the positioning block one and the positioning block two, there are fixedly connected blocks that are slidably connected with the first card slot at the corresponding position.

[0007] Furthermore: A second card slot for slidably connecting with the moving ring is opened on the inner side of the transverse block. Among them, a connecting shaft fixedly connected with the spray gun two is fixedly connected to the outer side of one of the transverse blocks.

[0008] Furthermore: A motor is fixedly connected inside the chassis. The output end of the motor is fixedly connected with the transmission shaft. A toothed ring is fixedly connected to the inner ring of the moving ring. The toothed ring is in meshing transmission with the transmission gear. The toothed ring includes two racks and two arc teeth. The two ends of the arc teeth are respectively fixedly connected with the corresponding racks.

[0009] Furthermore: One end of the limiting rod is rotatably connected with a roller. A sliding groove for slidably clamping the roller is opened on the bottom surface of the moving ring.

[0010] Furthermore: One end of the boosting plate is rotatably connected with a sliding plate. Two rectangular blind holes are opened at one end of the arrow frame. The rectangular blind holes are slidably inserted with the corresponding sliding plates.

[0011] Furthermore: A trapezoidal groove is opened on one side of the sliding plate. A trapezoidal block slidably clamped with the corresponding trapezoidal groove is fixedly connected inside the rectangular blind hole.

[0012] Furthermore, at one end of the top surface of the pallet, two U-shaped clamping plates respectively slidably connected to the boosting plates at corresponding positions are fixed. One side of each U-shaped clamping plate is fixedly connected to the electric push rod at the corresponding position, and the output end of the electric push rod is fixedly connected to the boosting plate at the corresponding position.

[0013] Furthermore, a dryer is fixed at one end of the top surface of the pallet, and a side plate fixedly connected to the line marking machine is fixed on one side of the pallet.

[0014] Advantages of the present invention:

[0015] 1. By the output end of one of the electric push rods pushing the boosting plate, the arrow frame deflects in a direction away from the boosting plate. At the same time, the sliding plate gradually moves out of the arrow frame, realizing the production of an inclined arrow marking frame. The paint delivery pipe on the line marking machine is connected and fixed to spray gun one and spray gun two. The motor drives the transmission gear to mesh with a rack on the moving ring, causing the moving ring and the limiting frame to move together towards the tip of the arrow frame. At this time, spray gun one is convenient for longitudinally moving the paint on one side of the arrow frame for paint spraying, realizing the spraying of the middle part and the left corner of the arrow marking. When the arc tooth at one end of the moving ring meshes with the transmission gear, the moving ring moves to the right inside the limiting frame, and then spray gun two moves to the tip of the arrow frame for spraying paint. Finally, the rack on the other side of the moving ring meshes with the transmission gear to drive spray gun two, which has moved to the right side of the arrow frame, to continue moving in a direction away from the tip of the arrow frame, realizing the spraying of the middle part and the right corner of the arrow marking. At the same time, spray gun two reciprocates at one end in the middle of the arrow frame along with the limiting frame, facilitating the spraying of the extension line of the arrow marking, thereby realizing the automatic spraying of the line mark of the arrow marking, which is beneficial to improving the working efficiency of arrow marking spraying;

[0016] 2. By controlling the electric push rods at different positions to drive the boosting plates at corresponding positions to move, the arrow frame is inclined in different directions. Cooperating with spray gun one and spray gun two for paint spraying is convenient for making arrow line marks in different orientations. And by controlling the distance that the output end of the electric push rod pushes the boosting plate to move, the rotation and inclination angle of the arrow frame can be adjusted to different angles, facilitating the production of arrow line marks with different bending angles. By adjusting the arrow frame to a straight arrangement state, it also cooperates with spray gun one and spray gun two to facilitate the production of a straight arrow marking. It is also possible to use spray gun two alone to spray paint on the middle position of the arrow frame. At this time, the spraying mechanism does not operate, and the position is moved relying on an external line marking machine, realizing the spraying of a straight marking on the road surface;

[0017] 3. By adjusting the arrow frame to a straight line arrangement state, move the spray gun 1 on the movable ring to the same straight line position as the spray gun 2, and then connect and fix the pipe for conveying primer paint from the outside to the spray gun 1, connect and fix the pipe for conveying reflective paint from the outside to the spray gun 2, open the spray gun 1 and the spray gun 2, and cooperate with the movement of the marking machine to realize spraying a linear primer mark on the road surface first, and then spraying a linear reflective paint mark above the linear primer mark, thereby meeting the demand for spraying special road line marks and expanding the scope of use of this application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention and the marking machine;

[0020] Figures 2-3 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of the arrow frame in the bent state of the present invention;

[0022] Figure 5 This is a schematic diagram of the split three-dimensional structure of the arrow frame and the booster plate in the present invention;

[0023] Figure 6 It is a schematic diagram of the arrow frame and spraying mechanism structure of the present invention;

[0024] Figure 7 This is a schematic diagram of the structure of the moving ring, transmission gear and limiting rod in the present invention;

[0025] Figures 8-9 It is a schematic structural diagram of different position states of the mobile ring in the present invention.

[0026] In the figure: 100, marking machine; 200, support plate; 210, 匚-shaped splint; 220, dryer; 300, booster plate; 310, sliding plate; 400, arrow frame; 410, top plate; 420, rectangular blind hole; 500, electric push rod; 600, spraying mechanism; 610, crossbeam; 611, transmission shaft; 620, limit frame; 621, transverse block; 6211, connecting shaft; 622, longitudinal block; 630, moving ring; 631, spray gun 1; 632, slide; 640, transmission gear; 650, limit rod; 651, roller; 660, spray gun 2; 670, chassis. DETAILED DESCRIPTION

[0027] Next, in combination with the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0028] Please refer to Figures 1-9 As shown, a road surface line marking spraying device for road construction includes a line marking machine 100. One side of the line marking machine 100 is fixedly connected with a support plate 200. Two symmetrically distributed boosting plates 300 are slidably connected to the top surface of the support plate 200. An arrow frame 400 is slidably connected between the two boosting plates 300. Two electric push rods 500 for driving the corresponding boosting plates 300 to move are arranged on the top surface of the support plate 200. A top plate 410 is fixed on the top surface of the arrow frame 400. A spraying mechanism 600 is arranged on the top surface of the top plate 410. The spraying mechanism 600 includes a cross beam 610 fixedly connected with the top plate 410. A limiting frame 620 is slidably connected to the bottom of the cross beam 610. A moving ring 630 is slidably connected inside the limiting frame 620. A transmission shaft 611 is rotatably connected to the middle of the cross beam 610. A transmission gear 640 for driving the moving ring 630 to move is fixed to the bottom of the transmission shaft 611. A limiting rod 650 is arranged between the bottom end of the transmission shaft 611 and the moving ring 630. A spray gun one 631 is fixed to one end of the moving ring 630. A spray gun two 660 is fixed to one end of the limiting frame 620. A machine box 670 for driving the transmission shaft 611 to rotate is fixed to the top surface of the cross beam 610. By arranging the arrow frame 400 on one side of the line marking machine 100, the arrow frame 400 is convenient for simulating the shape of the arrow, and cooperating with the spray gun one 631 to spray paint to realize the production of arrow line markings. By longitudinally slidably connecting a limiting frame 620 above the arrow frame 400, and transversely slidably connecting a moving ring 630 inside the limiting frame 620, the transmission gear 640 drives the moving ring 630 to move inside the limiting frame 620, so as to realize adjusting the spray gun one 631 to spray paint on both sides, the middle and the tip of the arrow frame 400. At the same time, the limiting frame 620 drives the spray gun two 660 to move longitudinally back and forth, which is convenient for spraying paint on the extension track of the arrow line marking, and is beneficial to improving the spraying efficiency of the arrow line marking. By driving the corresponding boosting plate 300 to move with the electric push rod 500 to make the arrow frame 400 rotate and tilt, it is convenient to produce arrow line markings with different tilt angles.

[0029] At both ends of the cross beam 610, a first positioning block and a second positioning block are respectively fixed. The first positioning block is fixedly connected to the top plate 410. The limiting frame 620 includes two transverse blocks 621. A longitudinal block 622 is fixed between the ends of the two transverse blocks 621. A first clamping groove is formed on the outer side of the longitudinal block 622. On one side of both the first positioning block and the second positioning block, a clamping block that is slidably connected to the corresponding first clamping groove is fixed. The clamping block slides in the clamping groove to enable the limiting frame 620 to stably move longitudinally below the cross beam 610, so as to enable the limiting frame 620 to drive the second spray gun 660 to perform linear reciprocating paint spraying. A second clamping groove for slidably connecting with the moving ring 630 is formed on the inner side of the transverse block 621. Among them, a connecting shaft 6211 fixedly connected to the second spray gun 660 is fixed on the outer side of one transverse block 621. The second clamping groove facilitates the stable lateral movement of the moving ring 630 inside the limiting frame 620, and the connecting shaft 6211 facilitates the fixation of the second spray gun 660.

[0030] A motor is fixed inside the chassis 670, and the output end of the motor is fixedly connected to the transmission shaft 611. A toothed ring is fixed to the inner ring of the moving ring 630, and the toothed ring is meshed with the transmission gear 640 for transmission. The toothed ring includes two racks and two arc teeth, and the two ends of the arc teeth are respectively fixedly connected to the corresponding racks. When the transmission gear 640 is meshed with the rack for transmission, the longitudinal movement of the moving ring 630 is realized. When the transmission gear 640 is meshed with the arc teeth for transmission, the lateral movement of the moving ring 630 is realized. One end of the limiting rod 650 away from the transmission shaft 611 is rotatably connected with a roller 651. A sliding groove 632 for slidably clamping the roller 651 is formed on the bottom surface of the moving ring 630. One end of the limiting rod 650 is rotatably connected to the transmission shaft 611, and the other end is clamped in the sliding groove 632 through the roller 651, so that the toothed ring on the moving ring 630 can always be in a meshed state with the transmission gear 640. One end of the boosting plate 300 is rotatably connected with a sliding plate 310. Two rectangular blind holes 420 are formed at one end of the arrow-shaped frame 400, and the rectangular blind holes 420 are slidably inserted with the corresponding sliding plates 310. When the arrow-shaped frame 400 rotates and tilts, the sliding plate 310 can extend out to supplement the length requirement of the boosting plate 300.

[0031] One side of the sliding plate 310 is provided with a trapezoidal groove, and a trapezoidal block that is slidably clamped with the trapezoidal groove at the corresponding position is fixed inside the rectangular blind hole 420, so that the sliding plate 310 stably moves inside the rectangular blind hole 420 and will not be separated from the arrow frame 400; two U-shaped clamping plates 210 that are slidably connected to the corresponding position booster plates 300 are fixed at one end of the top surface of the support plate 200. One side of the U-shaped clamping plate 210 is fixedly connected to the corresponding position electric push rod 500, and the output end of the electric push rod 500 is fixedly connected to the corresponding position booster plate 300. By controlling the electric push rods 500 at different positions to drive the booster plates 300 at the corresponding positions to move, the arrow frame 400 is tilted in different directions, and it is convenient to spray paint with the paint gun one 631 and the paint gun two 660 to make arrow line marks in different orientations. And by controlling the distance that the output end of the electric push rod 500 pushes the booster plate 300 to move, the arrow frame 400 is rotated and tilted to different angles, which is convenient to make arrow line marks with different bending angles; a dryer 220 is fixed at one end of the top surface of the support plate 200, and a side plate fixedly connected to the line marking machine 100 is fixed on one side of the support plate 200. The dryer 220 is convenient for drying the sprayed paint.

[0032] Working principle: When in use, when a straight line mark needs to be sprayed on the road surface, refer to the structure diagram of the connection state of the line marking machine 100 and the present invention shown in the instruction manual Figure 1 At this time, the arrow frame 400 and the two booster plates 300 are in a straight line. Install the paint barrel on the line marking machine 100, and connect one end of the paint delivery pipeline to the paint gun two 660. When the line marking machine 100 moves on the road surface, the paint gun two 660 sprays the paint on the road surface to form a straight line mark on the road surface. At this time, the plate bodies of the arrow frame 400 on both sides of the paint gun two 660 are convenient for blocking the paint from spreading to the surrounding area, which is convenient for the paint to be sprayed in a linear track. When two kinds of paint need to be used during the spraying of the straight line mark, that is, when a primer and a reflective paint are combined and sprayed, refer to the instruction manual Figure 6, the motor inside the chassis 670 drives the transmission shaft 611 to rotate, causing the transmission gear 640 to rotate clockwise. The arc-shaped teeth of the moving ring 630 near the tip of the arrow frame 400 mesh with the transmission gear 640 for transmission, so that the entire moving ring 630 drives the spray gun one 631 to move to the right inside the limit frame 620, making the spray gun one 631 gradually move to be in a straight line with the spray gun two 660. Then, the spray gun one 631 is connected and fixed to the pipeline for conveying the primer on the line marker 100, and the spray gun two 660 is connected and fixed to the pipeline for conveying the reflective paint on the line marker 100 (the number of paint cylinders and paint conveying pipelines on the line marker 100 can be arranged according to needs to meet the material requirements of the spray gun one 631 and the spray gun two 660. The specific structure of the line marker 100 is the prior art, and the applicant will not elaborate). At this time, the spray gun one 631 and the spray gun two 660 are opened. When the line marker 100 moves along the road surface, the spray gun one 631 first sprays the primer paint on the linear track of the road surface, and then the spray gun two 660 sprays the reflective paint on the basis of the road surface primer, realizing the combined spraying of the two paints to form a line mark;

[0033] When it is necessary to draw an arrow line mark on the road surface, refer to the instruction manual Figure 6 , the motor inside the chassis 670 drives the transmission gear 640 to rotate counterclockwise, causing the rack on the right side of the moving ring 630 to mesh with the transmission gear 640 for transmission. At this time, the moving ring 630 drives the entire limit frame 620 to move towards the tip of the arrow frame 400. At this time, the spray gun one 631 arranged on the left side of the arrow frame 400 sprays the middle and left areas of the arrow frame 400. When the arc-shaped teeth on the moving ring 630 in the direction away from the tip of the arrow frame 400 mesh with the transmission gear 640 and drive the moving ring 630 to drive the spray gun one 631 to move to the right inside the limit frame 620 (refer to the instruction manual Figure 8 ), at this time, the spray gun one 631 is convenient for spraying paint on the arrow area of the arrow line mark. The arc-shaped teeth at this position cross the transmission gear 640, and the rack on the left side of the moving ring 630 meshes with the transmission gear 640, causing the spray gun one 631 that has moved to the right side of the arrow frame 400 to move back from the tip of the arrow frame 400 in the direction away from the tip, realizing that the spray gun one 631 sprays the paint on the right side and the middle of the arrow line mark (refer to the instruction manual Figure 9 ), thus realizing spraying paint on the arrow line mark. During the movement of the moving ring 630 described above, the limit frame 620 moves reciprocally along the cross beam 610, and further causes the spray gun two 660 to spray paint on the linear extension line at the end of the arrow line mark away from the tip. When it is necessary to adjust the position of the arrow line mark layout on both sides of the linear line mark, taking the arrow line mark layout on the left side of the linear line mark as an example, refer to the instruction manual Figure 2, after the linear line label spraying is completed and it is necessary to spray arrow line labels at the ends of the linear line labels, the output end of the right electric push rod 500 on the pallet 200 pushes one end of the arrow frame 400, and the position of the other end of the arrow frame 400 remains unchanged, so that the arrow frame 400 is gradually arranged obliquely on the left side of the linear line label. The skew state of the arrow frame 400 refers to the description in the specification. Figure 4 , at this time, both sliding plates 310 rotate at the ends of the corresponding position boosting plates 300. At the same time, the sliding plate 310 located inside the right side of the arrow frame 400 gradually moves out a certain distance to facilitate meeting the rotation requirement of the arrow frame 400. Similarly, the spraying mechanism 600 is used to drive the spray gun one 631 and the spray gun two 660 to move to realize the spraying of the obliquely arranged arrow line labels.

[0034] In the description of this specification, the description with reference to terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0035] The above content is only an example and explanation of the present invention. Those skilled in the art of this technology make various modifications or supplements or use similar methods to replace the specific embodiments described, as long as they do not deviate from the invention or exceed the scope defined by the claims of the present invention, they should all belong to the protection scope of the present invention.

Claims

1. A road surface line marking spraying device for road construction, comprising a line marking machine (100), characterized in that, One side of the marking machine (100) is fixedly connected to a support plate (200), the top surface of the support plate (200) is slidably connected to two symmetrically distributed boosting plates (300), an arrow frame (400) is slidably connected between the two boosting plates (300), the top surface of the support plate (200) is provided with two electric push rods (500) for driving the boosting plates (300) at corresponding positions to move, one end of the top surface of the support plate (200) is fixed with two 匚-shaped splints (210) respectively slidably connected to the boosting plates (300) at corresponding positions, one side of the 匚-shaped splint (210) is fixedly connected to the electric push rods (500) at corresponding positions, the output end of the electric push rod (500) is fixedly connected to the boosting plates (300) at corresponding positions, the top surface of the arrow frame (400) is fixed with a top plate (410), and the top surface of the top plate (410) is provided with a spraying mechanism (600); The spraying mechanism (600) includes a crossbeam (610) fixedly connected to the top plate (410), the bottom of the crossbeam (610) is slidably connected to a limit frame (620), the interior of the limit frame (620) is slidably connected to a moving ring (630), the middle of the crossbeam (610) is rotatably connected to a transmission shaft (611), the bottom of the transmission shaft (611) is fixed with a transmission gear (640) for driving the moving ring (630) to move, a limit rod (650) is provided between the bottom end of the transmission shaft (611) and the moving ring (630), and the moving ring (630) is rotatably connected to the middle of the crossbeam (610), and a transmission gear (640) for driving the moving ring (630) to move is fixed to the bottom of the transmission shaft (611). 0) is fixed with a spray gun 1 (631) at one end, a spray gun 2 (660) is fixed at one end of the limit frame (620), a chassis (670) for driving the transmission shaft (611) to rotate is fixed on the top surface of the crossbeam (610), a motor is fixed inside the chassis (670), the output end of the motor is fixedly connected to the transmission shaft (611), a gear ring is fixed to the inner ring of the movable ring (630), the gear ring is meshed with the transmission gear (640) for transmission, the gear ring includes two racks and two arc-shaped teeth, and the two ends of the arc-shaped teeth are respectively fixedly connected to the racks at corresponding positions; A positioning block 1 and a positioning block 2 are fixed to both ends of the crossbeam (610), the positioning block 1 is fixedly connected to the top plate (410), the limiting frame (620) comprises two transverse blocks (621), a longitudinal block (622) is fixed between the ends of the two transverse blocks (621), a card slot 1 is provided on the outer side of the longitudinal block (622), and a card block slidably connected to the card slot 1 at the corresponding position is fixed on one side of both the positioning block 1 and the positioning block 2.

2. The pavement line marking spraying device for road construction according to claim 1, characterized in that, The inner side of the transverse block (621) is provided with a second clamping groove slidably connected to the movable ring (630), wherein a connecting shaft (6211) fixedly connected to the second spray gun (660) is fixed on the outer side of one of the transverse blocks (621).

3. A road surface line marking spraying device for road construction according to claim 1, characterized in that, One end of the limiting rod (650) that is away from the transmission shaft (611) is rotatably connected to a roller (651), and a sliding groove (632) that is slidably engaged with the roller (651) is provided on the bottom surface of the movable ring (630).

4. A pavement line marking spraying device for road construction according to claim 1, characterized in that, One end of the boosting plate (300) is rotatably connected to a sliding plate (310). Two rectangular blind holes (420) are formed at one end of the arrow-shaped frame (400), and the rectangular blind holes (420) are slidably inserted into the sliding plate (310) at the corresponding positions.

5. The pavement line marking spraying device for road construction according to claim 4, characterized in that A trapezoidal groove is formed on one side of the sliding plate (310), and a trapezoidal block that is slidably clamped with the corresponding trapezoidal groove is fixed inside the rectangular blind hole (420).

6. The pavement line marking spraying device for road construction according to claim 1, characterized in that, A dryer (220) is fixed to one end of the top surface of the support plate (200), and a side plate fixedly connected to the scribing machine (100) is fixed to one side of the support plate (200).

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