Road surface marking device capable of adjusting line changing width and used for road administration engineering

Abstract

The invention belongs to the technical field of road surface marking devices capable of adjusting line changing width for road administration engineering, and particularly relates to a road surface marking device capable of adjusting line changing width for road administration engineering, which comprises a device body, a processing assembly is arranged at the middle section of the device body, and the processing assembly is connected with a connecting assembly; the middle section of the connecting assembly is connected with a cleaning assembly, and the front section of the cleaning assembly is connected with a scribing assembly. A bearing plate is fixedly connected to the inner side of a connecting side frame fixedly connected to the inner side of the connecting frame, a driving rotary disc is fixedly installed at the top of the connected bearing plate, the rotating driving rotary disc drives a transmission frame fixedly connected to the top to rotate, and a first connecting rod fixedly connected to the outer wall of the transmission frame drives a hinged second connecting rod to move and deflect. A cleaning roller is in transmission connection with the inner wall of the connecting side frame, and a cleaning ring hinged to the outer end of a second connecting rod slides on the outer wall of the cleaning roller, so that the outer wall of the rotating cleaning roller can be cleaned, and garbage attached to the road surface can be conveniently cleaned.

Description

Technical Field

[0001] The invention relates to the technical field of a road marking device for road engineering with adjustable line-changing width, and in particular to a road marking device for road engineering with adjustable line-changing width. Background Art

[0002] Road administration is an integral part of my country's administrative management. Highway road administration refers to the administrative management of highways by road administration agencies in accordance with national laws, regulations and rules. The purpose is to ensure the quality of highway use and improve the social and economic benefits of highways. Road marking is an important task in the later stage of road construction.

[0003] Most of the existing road marking machines used for road marking have complex structures, large volumes, high prices, and many mechanical failures. Therefore, most cities still use manual marking, which is labor-intensive and difficult to achieve regular, smooth, and beautiful lines. When marking the road surface, there may be some debris attached to the road surface, which will be inconvenient for marking. Traditional marking devices generally mark the road surface directly and cannot clean the road surface, which is not conducive to marking. Based on this, a road marking device with adjustable line change width for road engineering is proposed to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a road marking device for road engineering with adjustable line change width, so as to solve the problem raised in the above background technology that when marking the road surface, there may be some debris attached to the road surface, which will be inconvenient for marking. Traditional marking devices generally mark the road surface directly and cannot clean the road surface, which is not conducive to marking.

[0005] To achieve the above object, the present invention provides the following technical solution: a road marking device for road engineering with adjustable line change width, comprising a device body, a processing assembly is arranged in the middle section of the device body, the processing assembly is connected to a connecting assembly, a cleaning assembly is connected to the middle section of the connecting assembly, and a marking assembly is connected to the front section of the cleaning assembly; The connecting side frame includes a connecting side frame, a receiving plate is fixedly connected to the inner side of the connecting side frame, a driving turntable is fixedly installed on the top of the receiving plate, a transmission frame is fixedly installed on the top of the driving turntable, a connecting rod 1 is fixedly connected to the outer wall of the transmission frame, a connecting rod 2 is hingedly connected to the inner wall of the front section of the connecting rod 1, a cleaning ring is hingedly connected to the front side of the connecting rod 2, a cleaning roller is transmission-connected to the inner side of the connecting side frame, and a hot air nozzle is fixedly installed on the inner wall of the rear section of the connecting side frame.

[0006] Preferably, the processing assembly includes a ring frame fixedly mounted on the top of the device body, a mounting frame fixedly mounted on the top of the ring frame, a driving motor fixedly connected to the inner wall of the mounting frame, a rotating shaft fixedly connected to the output end of the driving motor, a stirring fan blade fixedly connected to the outer wall of the rotating shaft, a connecting pump pipe is arranged at the bottom of the device body, a valve pipe is arranged on the inner side of the connecting pump pipe, and a scriber is arranged at the other end of the connecting pump pipe.

[0007] Preferably, the connecting assembly includes a connecting frame rotatably connected to the outer wall of the device body, the inner wall of the upper section of the connecting frame is fixedly connected to a push rod, the outer wall of the lower section of the connecting frame is rotatably connected to a front push wheel, the outer wall of the rear section of the connecting frame is rotatably connected to a rear support frame, the outer wall of the rear section of the rear support frame is rotatably connected to a rear push wheel, a scraper is fixedly connected to the inner side of the rear support frame, a reinforcement frame is fixedly connected to the inner side of the rear support frame, and a truss is fixedly connected to the connecting frame and the outer wall of the rear support frame.

[0008] Preferably, the marking assembly includes a mounting cross frame, the inner wall of the mounting cross frame is threadedly connected to an adjusting mounting rod, the bottom of the adjusting mounting rod is rotatably connected to a placement plate, the top of the placement plate is fixedly connected to a receiving seat plate, the top of the receiving seat plate is fixedly mounted with a driver, the driver is transmission-connected to a transmission component, and the bottom of the transmission component is transmission-connected to a rotating disk.

[0009] Preferably, the connecting side frame is fixedly connected to the rear support frame and the connecting frame, and the cleaning ring is slidably connected to the outer wall of the cleaning roller; a connecting rod 1 fixedly connected to the outer wall of the transmission frame drives a hinged connecting rod 2 to move and deflect, and a cleaning roller is transmission-connected to the inner wall of the connecting side frame, and the cleaning ring hinged to the outer end of the second connecting rod slides with the outer wall of the cleaning roller, so as to clean the outer wall of the rotating cleaning roller, thereby facilitating the cleaning of garbage attached to the road surface.

[0010] Preferably, the rotating shaft is rotatably connected to the inner wall of the device body, and the valve tube is fixedly installed on the top of the mounting cross frame; the driving motor fixedly installed on the inner wall of the connected mounting frame runs, driving the rotating shaft fixedly connected to the output end to rotate, and the stirring blades fixedly connected to the outer wall of the rotating shaft to rotate.

[0011] Preferably, the connecting frame is fixedly connected to the back of the mounting cross frame; a push rod is fixedly connected to the inner side of the upper section of the connecting frame rotatably connected to the outer wall of the device body, and the entire device can be towed by the connected push rod; the rear support frame rotatably connected to the outer wall of the connecting frame is installed in a limited position through a truss.

[0012] Preferably, the top of the receiving seat plate is fixedly connected to the bottom of the marker, and the rotating disk is transmission-connected to the bottom of the placement plate; an adjusting mounting rod is threadedly fixedly connected to the inner wall of the mounting cross frame, and the placement plate connected by rotating at the bottom of the connected adjusting mounting rod moves accordingly; a driver is fixedly installed on the top of the receiving seat plate, and the bottom of the transmission component connected by the connected driver is transmission-connected to a rotating disk, so that the marking material dropped by the marker can be marked by the rotating disk.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The road marking device for road engineering with adjustable line change width has a connecting side frame fixedly connected to the inner side of the connecting frame, and a receiving plate is fixedly connected to the inner side of the connecting frame. A driving turntable is fixedly installed on the top of the connected receiving plate. The running driving turntable drives the transmission frame fixedly connected on the top to rotate, and a connecting rod 1 fixedly connected to the outer wall of the transmission frame drives a hinged connecting rod 2 to move and deflect. A cleaning roller is transmission-connected to the inner wall of the connecting side frame, and a cleaning ring hinged to the outer end of the second connecting rod slides with the outer wall of the cleaning roller, so that the outer wall of the rotating cleaning roller can be cleaned, which is convenient for cleaning garbage attached to the road surface.

[0014] 2. The road marking device for road engineering with adjustable line width has a mounting frame fixedly connected to the top of a ring frame fixedly installed on the top of the connected device body, which is convenient for adding materials through the top of the connected ring frame box device body, and a driving motor fixedly installed on the inner wall of the connected mounting frame is operated to drive the rotating shaft fixedly connected to the output end to rotate, and the stirring fan blades fixedly connected to the outer wall of the rotating shaft are rotated, and a valve pipe is connected to the middle section of the connecting pump pipe connected to the bottom of the device body, and the discharge amount of the material is controlled by controlling the switch of the connected valve pipe, and a marking device is connected to the other end of the connecting pump pipe, and the connected marking device controls the line width through the material.

[0015] 3. The road marking device for road engineering with adjustable line-changing width is fixedly connected to the inner wall of the mounting cross frame and is threadedly connected with an adjusting mounting rod. The bottom of the connected adjusting mounting rod rotates and the connected placement plate moves accordingly. A driver is fixedly connected to the top of the receiving seat plate. The bottom of the transmission component connected to the connected driver is connected to a rotating disk. The marking material dropped by the marker can be marked by the rotating disk, which is convenient for overall construction and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the back structure of the present invention; Figure 3 It is a schematic diagram of the oblique side structure of the present invention; Figure 4It is a schematic diagram of the oblique pitch structure of the present invention; Figure 5 It is a schematic diagram of the right structure of the present invention.

[0017] In the figure: 1, device body; 2, connecting mechanism; 21, processing assembly; 211, ring frame; 212, mounting frame; 213, driving motor; 214, rotating shaft; 215, stirring fan blade; 216, connecting pump pipe; 217, valve pipe; 218, marking device; 22, connecting assembly; 221, connecting frame; 222, push rod; 223, front push wheel; 224, rear support frame; 225, rear push wheel; 226, scraper; 227, reinforcement frame; 228 , truss; 23, cleaning assembly; 231, connecting side frame; 232, receiving plate; 233, driving turntable; 234, transmission frame; 235, connecting rod one; 236, connecting rod two; 237, cleaning ring; 238, cleaning roller; 239, hot air nozzle; 24, marking assembly; 241, mounting cross frame; 242, adjusting mounting rod; 243, placing plate; 244, receiving seat plate; 245, driver; 246, transmission component; 247, rotating disk. DETAILED DESCRIPTION

[0018] 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 creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-Figure 5 , the present invention provides a technical solution: Embodiment 1: A road marking device for road engineering with adjustable line change width comprises a device body 1, a processing assembly 21 is arranged in the middle section of the device body 1, the processing assembly 21 is connected to the connecting assembly 22, the middle section of the connecting assembly 22 is connected to the cleaning assembly 23, and the front section of the cleaning assembly 23 is connected to the marking assembly 24; a connecting side frame 231 comprises a connecting side frame 231, a receiving plate 232 is fixedly connected to the inner side of the connecting side frame 231, a driving turntable 233 is fixedly installed on the top of the receiving plate 232, a transmission frame 234 is fixedly installed on the top of the driving turntable 233, a connecting rod 1 235 is fixedly connected to the outer wall of the transmission frame 234, a connecting rod 236 is hinged to the inner wall of the front section of the connecting rod 1 235, a cleaning ring 237 is hinged to the front of the connecting rod 236, a cleaning roller 238 is transmission-connected to the inner side of the connecting side frame 231, and a hot air nozzle 239 is fixedly installed on the inner wall of the rear section of the connecting side frame 231.

[0020] In this embodiment, a receiving plate 232 is fixedly connected to the inner side of a connecting side frame 231 which is fixedly connected to the inner side of the connecting frame 221. A driving turntable 233 is fixedly installed on the top of the connected receiving plate 232. The running driving turntable 233 drives a transmission frame 234 fixedly connected to the top to rotate. A connecting rod 1 235 fixedly connected to the outer wall of the transmission frame 234 drives a hinged connecting rod 236 to move and deflect. A cleaning roller 238 is transmission-connected to the inner wall of the connecting side frame 231. A cleaning ring 237 hinged to the outer end of the connecting rod 236 slides with the outer wall of the cleaning roller 238, so as to clean the outer wall of the rotating cleaning roller 238, thereby facilitating the cleaning of garbage attached to the road surface.

[0021] Furthermore, the connecting side frame 231 is fixedly connected to the rear support frame 224 and the connecting frame 221 , and the cleaning ring 237 is slidably connected to the outer wall of the cleaning roller 238 .

[0022] Furthermore, a receiving plate 232 is fixedly connected to the inner side of the connecting side frame 231 which is fixedly connected to the inner side of the connecting frame 221, and a driving turntable 233 is fixedly installed on the top of the connected receiving plate 232. The running driving turntable 233 drives the transmission frame 234 fixedly connected to the top to rotate, and the connecting rod 1 235 fixedly connected to the outer wall of the transmission frame 234 drives the hinged connecting rod 236 to move and deflect.

[0023] Embodiment 2: On the basis of embodiment 1, the processing assembly 21 includes a ring frame 211 fixedly installed on the top of the device body 1, a mounting frame 212 is fixedly installed on the top of the ring frame 211, a driving motor 213 is fixedly connected to the inner wall of the mounting frame 212, a rotating shaft 214 is fixedly connected to the output end of the driving motor 213, a stirring fan blade 215 is fixedly connected to the outer wall of the rotating shaft 214, a connecting pump pipe 216 is connected to the bottom of the device body 1, a valve pipe 217 is connected to the inner side of the connecting pump pipe 216, and a scriber 218 is connected to the other end of the connecting pump pipe 216.

[0024] In this embodiment, a mounting frame 212 is fixedly connected to the top of a ring frame 211 fixedly installed on the top of the connected device body 1, so that materials can be added to the top of the device body 1 through the connected ring frame 211. A driving motor 213 fixedly installed on the inner wall of the connected mounting frame 212 is operated, driving a rotating shaft 214 fixedly connected to the output end to rotate, and a stirring blade 215 fixedly connected to the outer wall of the rotating shaft 214 is rotated. A valve pipe 217 is provided in the middle section of a connecting pump pipe 216 connected to the bottom of the device body 1, and the discharge amount of the material is controlled by controlling the switch of the connected valve pipe 217. A marking device 218 is provided at the other end of the connecting pump pipe 216, and the connected marking device 218 performs marking construction to control the line width through the material.

[0025] Furthermore, the rotating shaft 214 is rotatably connected to the inner wall of the device body 1 , and the valve tube 217 is fixedly installed on the top of the mounting cross frame 241 .

[0026] Furthermore, the driving motor 213 fixedly installed on the inner wall of the connected mounting frame 212 is in operation, driving the rotating shaft 214 fixedly connected to the output end to rotate, and the stirring blades 215 fixedly connected to the outer wall of the rotating shaft 214 are rotated, and a valve pipe 217 is provided in the middle section of the connecting pump pipe 216 connected to the bottom of the device body 1.

[0027] Embodiment 3: On the basis of embodiment 1, the connecting assembly 22 comprises a connecting frame 221 rotatably connected to the outer wall of the device body 1, the inner wall of the upper section of the connecting frame 221 is fixedly connected to a push rod 222, the outer wall of the lower section of the connecting frame 221 is rotatably connected to a front push wheel 223, the outer wall of the rear section of the connecting frame 221 is rotatably connected to a rear support frame 224, the outer wall of the rear section of the rear support frame 224 is rotatably connected to a rear push wheel 225, the inner side of the rear support frame 224 is fixedly connected to a scraper 226, and the inner side of the rear support frame 224 is fixedly connected to a reinforcing frame 22 7. The outer walls of the connecting frame 221 and the rear support frame 224 are fixedly connected with a truss 228; the marking assembly 24 includes a mounting cross frame 241, the inner wall of the mounting cross frame 241 is threadedly connected with an adjusting mounting rod 242, the bottom of the adjusting mounting rod 242 is rotatably connected with a placing plate 243, the top of the placing plate 243 is fixedly connected with a receiving seat plate 244, the top of the receiving seat plate 244 is fixedly installed with a driver 245, the driver 245 is transmission-connected with a transmission component 246, and the bottom of the transmission component 246 is transmission-connected with a rotating disk 247.

[0028] In this embodiment, a push rod 222 is fixedly connected to the inner side of the upper section of a connecting frame 221 rotatably connected to the outer wall of the device body 1, and the entire device can be towed by the connected push rod 222; a rear support frame 224 rotatably connected to the outer wall of the connecting frame 221 is limitedly installed by a truss 228, and a rear push wheel 225 is rotatably connected to the outer wall of the rear support frame 224, which cooperates with a front push wheel 223 rotatably connected to the outer wall of the lower section of the connecting frame 221 to perform mobile marking construction on the device; a scraper 226 and a reinforcing frame 227 fixedly connected to the inner side of the rear support frame 224 can facilitate the placement of items by users, and strengthen the structure of the connected lower section of the device, so as to facilitate the durable use of the entire device; An adjusting mounting rod 242 is fixedly connected to the inner wall of the mounting cross frame 241 and is threadedly connected. The placing plate 243 connected to the bottom of the adjusting mounting rod 242 moves accordingly. A driver 245 is fixedly installed on the top of the receiving seat plate 244. The bottom of the transmission component 246 connected to the driver 245 is connected to a rotating disk 247 for transmission. The marking material dropped by the marking device 218 can be marked by the rotating disk 247, which is convenient for the overall construction and use.

[0029] Furthermore, the connecting frame 221 is fixedly connected to the back of the mounting cross frame 241 ; the top of the receiving seat plate 244 is fixedly connected to the bottom of the scriber 218 , and the rotating disk 247 is transmission-connected to the bottom of the placement plate 243 .

[0030] Furthermore, the entire device can be towed by the connected push rod 222; the rear support frame 224 rotatably connected to the outer wall of the connecting frame 221 is limitedly installed through the truss 228, and the rear push wheel 225 rotatably connected to the outer wall of the rear support frame 224 cooperates with the front push wheel 223 rotatably connected to the outer wall of the lower section of the connecting frame 221, so that the device can be moved for marking construction.

[0031] Working principle: the ring frame 211 fixedly installed on the top of the connected device body 1 is fixedly connected with a mounting frame 212 on the top, so that materials can be added to the top of the device body 1 through the connected ring frame 211. The driving motor 213 fixedly installed on the inner wall of the connected mounting frame 212 is running, driving the rotating shaft 214 fixedly connected to the output end to rotate, and the stirring blades 215 fixedly connected to the outer wall of the rotating shaft 214 are rotating. The middle section of the connecting pump pipe 216 connected to the bottom of the device body 1 is connected with a valve pipe 217, and the discharge amount of the material is controlled by controlling the switch of the connected valve pipe 217. A scriber 218 is connected to the other end of the connecting pump pipe 216, and the connected scriber 218 is used to control the line width through the material. A push rod 222 is fixedly connected to the inner side of the upper section of the connecting frame 221 rotatably connected to the outer wall of the device body 1, and the entire device can be towed by the connected push rod 222; a rear support frame 224 rotatably connected to the outer wall of the connecting frame 221 is limitedly installed through a truss 228, and a rear push wheel 225 is rotatably connected to the outer wall of the rear support frame 224, which cooperates with a front push wheel 223 rotatably connected to the outer wall of the lower section of the connecting frame 221 to move and mark the device; a scraper 226 and a reinforcement frame 227 fixedly connected to the inner side of the rear support frame 224 can facilitate the user to place items, and strengthen the structure of the connected lower section of the device, so as to facilitate the durable use of the entire device; A receiving plate 232 is fixedly connected to the inner side of the connecting side frame 231 which is fixedly connected to the inner side of the connecting frame 221. A driving turntable 233 is fixedly installed on the top of the connected receiving plate 232. The running driving turntable 233 drives the transmission frame 234 which is fixedly connected to the top to rotate. The connecting rod 1 235 which is fixedly connected to the outer wall of the transmission frame 234 drives the hinged connecting rod 236 to move and deflect. A cleaning roller 238 is transmission-connected to the inner wall of the connecting side frame 231. A cleaning ring 237 which is hinged to the outer end of the connecting rod 236 slides with the outer wall of the cleaning roller 238, so as to clean the outer wall of the rotating cleaning roller 238, thereby facilitating the cleaning of garbage attached to the road surface. An adjusting mounting rod 242 is fixedly connected to the inner wall of the mounting cross frame 241 and is threadedly connected. The placing plate 243 connected to the bottom of the adjusting mounting rod 242 moves accordingly. A driver 245 is fixedly installed on the top of the receiving seat plate 244. The bottom of the transmission component 246 connected to the driver 245 is connected to a rotating disk 247 for transmission. The marking material dropped by the marking device 218 can be marked by the rotating disk 247, which is convenient for the overall construction and use.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A road marking device for road engineering with adjustable line width, comprising a device body (1), characterized in that: A processing assembly (21) is disposed in the middle section of the device body (1); the processing assembly (21) is connected to a connecting assembly (22); a cleaning assembly (23) is connected to the middle section of the connecting assembly (22); and a marking assembly (24) is connected to the front section of the cleaning assembly (23); The connecting side frame (231) comprises a connecting side frame (231), a receiving plate (232) is fixedly connected to the inner side of the connecting side frame (231), a driving turntable (233) is fixedly installed on the top of the receiving plate (232), a transmission frame (234) is fixedly installed on the top of the driving turntable (233), a connecting rod 1 (235) is fixedly connected to the outer wall of the transmission frame (234), a connecting rod 2 (236) is hingedly connected to the inner wall of the front section of the connecting rod 1 (235), a cleaning ring (237) is hingedly connected to the front of the connecting rod 2 (236), a cleaning roller (238) is transmission-connected to the inner side of the connecting side frame (231), and a hot air nozzle (239) is fixedly installed on the inner wall of the rear section of the connecting side frame (231).

2. The road marking device for road engineering with adjustable line change width according to claim 1 is characterized in that: The processing assembly (21) comprises a ring frame (211) fixedly mounted on the top of the device body (1); a mounting frame (212) is fixedly mounted on the top of the ring frame (211); a driving motor (213) is fixedly connected to the inner wall of the mounting frame (212); a rotating shaft (214) is fixedly connected to the output end of the driving motor (213); a stirring blade (215) is fixedly connected to the outer wall of the rotating shaft (214); a connecting pump pipe (216) is provided at the bottom of the device body (1); a valve pipe (217) is provided on the inner side of the connecting pump pipe (216); and a scriber (218) is provided at the other end of the connecting pump pipe (216).

3. The road marking device for road engineering with adjustable line change width according to claim 1 is characterized in that: The connection assembly (22) comprises a connection frame (221) rotatably connected to the outer wall of the device body (1); a push rod (222) is fixedly connected to the inner wall of the upper section of the connection frame (221); a front push wheel (223) is rotatably connected to the outer wall of the lower section of the connection frame (221); a rear support frame (224) is rotatably connected to the outer wall of the rear section of the connection frame (221); a rear push wheel (225) is rotatably connected to the outer wall of the rear section of the rear support frame (224); a scraper (226) is fixedly connected to the inner side of the rear support frame (224); a reinforcing frame (227) is fixedly connected to the inner side of the rear support frame (224); and a truss (228) is fixedly connected to the outer walls of the connection frame (221) and the rear support frame (224).

4. The road marking device for road engineering with adjustable line change width according to claim 1 is characterized in that: The marking assembly (24) comprises a mounting cross frame (241), the inner wall of the mounting cross frame (241) is threadedly connected to an adjusting mounting rod (242), the bottom of the adjusting mounting rod (242) is rotatably connected to a placement plate (243), the top of the placement plate (243) is fixedly connected to a receiving seat plate (244), the top of the receiving seat plate (244) is fixedly mounted with a driver (245), the driver (245) is transmission-connected to a transmission component (246), and the bottom of the transmission component (246) is transmission-connected to a rotating disk (247).

5. The road marking device for road engineering with adjustable line change width according to claim 1 is characterized in that: The connecting side frame (231) is fixedly connected to the rear support frame (224) and the connecting frame (221), and the cleaning ring (237) is slidably connected to the outer wall of the cleaning roller (238).

6. The road marking device for road engineering with adjustable line change width according to claim 2 is characterized in that: The rotating shaft (214) is rotatably connected to the inner wall of the device body (1), and the valve tube (217) is fixedly mounted on the top of the mounting cross frame (241).

7. The road marking device for road engineering with adjustable line change width according to claim 3 is characterized in that: The connecting frame (221) is fixedly connected to the back side of the mounting cross frame (241).

8. The road marking device for road engineering with adjustable line change width according to claim 4 is characterized in that: The top of the receiving seat plate (244) is fixedly connected to the bottom of the scriber (218), and the rotating disk (247) is drivingly connected to the bottom of the placement plate (243).

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