A marking line removing device for traffic engineering

Abstract

The application relates to the technical field of marking line removing devices, and discloses a marking line removing device for traffic engineering, which comprises a vehicle frame, a lifting wheel set, a heater, a hole distribution assembly, a spraying assembly, a removing assembly and a generator set arranged on the vehicle frame. The heater, the hole distribution assembly, the spraying assembly and the removing assembly are cooperatively matched, the heater is used for destroying the adhesion between marking line paint and a road surface by heating and softening the marking line, the hole distribution assembly is used for increasing the contact area of a dissolving agent and improving the penetration effect of the dissolving agent after the marking line is holed, the spraying assembly is used for spraying the dissolving agent on the marking line which is heated and softened and has fine holes, so that the dissolving agent rapidly penetrates the marking line, and finally, the marking line is removed and recycled by the removing assembly, marking line residue removal and pollutant centralized treatment are realized, and the influence on the surrounding environment is reduced.

Description

Technical Field

[0001] This invention relates to the field of road marking removal devices, and more specifically to a road marking removal device for traffic engineering. Background Technology

[0002] Road marking removal devices are a type of professional road cleaning and maintenance machinery, mainly used to remove abandoned or damaged traffic markings on roads, parking lots, running tracks, etc., providing a smooth and clean road surface base for new markings or road maintenance. Currently, existing road marking removal devices are mainly divided into mechanical grinding type, milling type, and high-pressure water jet type. Among them, the mechanical grinding type relies on a power device to drive the grinding wheel to rotate at high speed, removing the markings through physical friction, and is suitable for removing medium and shallow markings.

[0003] Chinese patent CN218027090U discloses a "marking removal device," comprising a motor box, inside which a motor is fixedly installed. A transmission rod is splinedly connected to the output end of the motor. A placement plate is fixedly connected to the lower surface of the motor box, a control frame is fixedly connected to one side of the placement plate, a connecting rod is fixedly connected to the lower surface of the control frame, a rotating rod is fixedly connected to one side of the connecting rod, and a roller is rotatably connected to the outer surface of the rotating rod. A compression spring is fixedly connected to the middle of the lower surface of the placement plate. This marking removal device, through the motor, drives a grinding disc to rotate, grinding and removing the markings. The compression spring allows workers to apply different forces according to the unevenness of the ground, adjusting the contact distance between the grinding disc and the ground to improve the removal effect. The combination of a water pipe ring and a spray nozzle facilitates water spraying around the grinding disc to suppress dust and prevent pollution of the road environment.

[0004] However, the existing technology has the following problems: While grinding can effectively remove road markings, the grinding tools can easily come into contact with the ground during the process, thus grinding the ground as well and causing wear and tear on the road. Summary of the Invention

[0005] The purpose of this invention is to provide a road marking removal device for traffic engineering in order to solve the above-mentioned problems. It aims to overcome the shortcomings of the existing technology that uses grinding to remove road markings, which easily leads to the grinding wheel abrading the ground and causing damage to the road. Details are described below.

[0006] To achieve the above objectives, the present invention provides the following technical solution: This invention provides a road marking removal device for traffic engineering, comprising a frame, on which are mounted a lifting wheel assembly, a heater, a hole-laying assembly, a spraying assembly, a removal assembly, and a generator set; the lifting wheel assembly can adjust the height of the frame off the ground; the heater is used to heat the road markings; the hole-laying assembly is used to lay holes in the heated road markings; the spraying assembly is used to spray a solvent onto the road markings after the holes are laid; and the removal assembly is used to remove and recover the dissolved road markings.

[0007] Preferably, the perforation assembly includes a rotating roller, which is rotatably mounted on the frame. The rotating roller has multiple rows of mounting holes arranged in a circumferential array. Sliding sleeves are slidably inserted into the mounting holes. The frame is provided with a drive component for driving the rotating roller to rotate.

[0008] Preferably, a punch is installed in the mounting hole, the punch is slidably inserted into the sliding sleeve, a first spring is provided between the sliding sleeve and the mounting hole, and the punch can protrude from the end of the sliding sleeve away from the rotating roller.

[0009] Preferably, the punching cone includes a cone rod and two semi-conical heads. The cone rod is connected to the mounting hole, and the two semi-conical heads are hinged to the end of the cone rod. A gap is provided between the two semi-conical heads. An abutment rod is connected inside the sliding sleeve. The abutment rod is located in the gap between the two semi-conical heads. When the abutment rod moves upward, it can push the two semi-conical heads open.

[0010] Preferably, two wedges are embedded and slidably connected on the tapered rod, and a sliding shaft is slidably inserted on the tapered rod. The two ends of the sliding shaft are respectively provided with a round head and a pointed head. One end of the round head of the sliding shaft slides through into the inside of the rotating roller, and the pointed head of the sliding shaft contacts the two wedges. A second spring is provided between the two wedges. When the sliding shaft moves towards the wedges, it can drive the two wedges to protrude from the outer wall of the tapered rod. After the wedges protrude from the outer wall of the tapered rod, they can restrict the contraction of the sliding sleeve. A sliding rod is slidably connected inside the rotating roller. When the sliding rod moves, it can push the sliding shaft towards the wedges through the round head. A bidirectional lead screw is rotatably connected inside the rotating roller. The bidirectional lead screw is provided with two first external threads in opposite directions. The two sliding rods are respectively threadedly connected to the two first external threads.

[0011] Preferably, the two ends of the bidirectional lead screw protrude from the two ends of the rotating roller, a handwheel is connected to the end of the bidirectional lead screw, a sliding frame is connected to the bidirectional lead screw, a nut ring is slidably sleeved on the sliding frame, a second external thread is opened on the outer wall of the rotating roller, the nut ring is threadedly connected to the second external thread, and a scale line is provided on the sliding frame.

[0012] Preferably, the lifting wheel assembly includes four cylinders, which are respectively installed at the four corners of the frame. The output end of each cylinder is provided with a wheel frame, and a roller is rotatably installed on the wheel frame of the cylinder. The heater is installed at the bottom of the frame.

[0013] Preferably, the spraying assembly includes a liquid tank and a sprayer, the liquid tank being mounted on the vehicle frame, the sprayer being mounted on the bottom of the vehicle frame, and a liquid pipe connecting the liquid tank and the sprayer.

[0014] Preferably, the cleaning assembly includes a recycling bin and a housing. The recycling bin is mounted on the frame, and the housing is mounted at the bottom of the frame. A set of cleaning rollers and a suction device are installed inside the housing. The housing is provided with a driver for driving the cleaning rollers to rotate and the suction device to operate. A pipe connects the suction device to the recycling bin.

[0015] The beneficial effects are: 1. This traffic marking removal device, through the coordinated operation of a heater, a perforation assembly, a spraying assembly, and a removal assembly, allows the heater to soften the markings by heating, thereby breaking the adhesion between the marking paint and the road surface. The perforation assembly creates perforations in the markings, increasing the contact area of ​​the solvent and improving its penetration. Subsequently, the spraying assembly sprays the solvent onto the softened and perforated markings, allowing the solvent to quickly penetrate the markings. Finally, the removal assembly removes and recycles the markings, achieving residue-free removal and centralized treatment of pollutants, reducing the impact on the surrounding environment. Compared to grinding removal, using a solvent to remove markings ensures effective removal while minimizing damage to the road.

[0016] 2. This traffic engineering road marking removal device, through the cooperation of two semi-conical heads and abutment rod, allows the two semi-conical heads to first penetrate the road marking when drilling holes in the rumble strip, and then open up to enlarge the hole, thereby achieving the technical effect of hole enlargement. This further increases the contact area and penetration depth of the subsequent solvent, ensuring that the underlying coating of the rumble strip can also be fully dissolved, and avoiding the residue of the underlying coating.

[0017] 3. This traffic marking removal device, through the cooperation of sliding rods, sliding shafts, and wedges, allows the sliding sleeves at both ends of the rotating roller to lock sequentially from both ends towards the middle, thereby precisely fixing the sliding sleeves in contact with the ground on both sides of the marking. This ensures that the sliding sleeves will not be triggered to contract due to ground undulations, avoiding damage to their internal semi-conical heads. Through the cooperation of scale lines and nut rings, workers can intuitively judge the number of sliding sleeves currently locked, facilitating quick adjustments by operators according to the marking width and improving work efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the cleaning component structure of the present invention; Figure 3 This is a schematic diagram of the perforated assembly structure of the present invention; Figure 4 This is a schematic diagram of the roller structure of the present invention; Figure 5 This is a schematic diagram of the sliding sleeve structure of the present invention; Figure 6 This is a schematic diagram of the punch cone structure of the present invention; Figure 7 This is a schematic diagram of the wedge block structure of the present invention; Figure 8 This is a schematic diagram of the bidirectional lead screw structure of the present invention; Figure 9 This is a schematic diagram of the sliding frame structure of the present invention.

[0020] The annotations in the attached figures are explained as follows: 1. Frame; 2. Lifting wheel assembly; 21. Cylinder; 22. Roller; 3. Heater; 4. Perforation assembly; 41. Rotary roller; 42. Sliding sleeve; 421. Abutting rod; 43. Drilling cone; 431. Conical rod; 432. Wedge block; 433. Sliding shaft; 434. Half-cone head; 44. Sliding rod; 45. Double-acting lead screw; 46. Handwheel; 47. Sliding frame; 48. Nut ring; 5. Spraying assembly; 51. Liquid tank; 52. Sprayer; 6. Cleaning components; 61. Recycling bin; 62. Housing; 63. Cleaning roller; 64. Suction unit; 7. Generator set. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0022] In the following description, certain specific details are set forth for the purpose of illustrating various disclosed embodiments in order to provide a thorough understanding of the various disclosed embodiments. However, those skilled in the art will recognize that embodiments may be practiced without one or more of these specific details. In other instances, well-known apparatuses, structures, and techniques associated with this application may not have been shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

[0023] Throughout this specification, references to "one embodiment" or "an embodiment" indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Therefore, the appearance of "in one embodiment" or "in another embodiment" in various places throughout the specification does not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic may be combined in any manner in one or more embodiments.

[0024] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0025] In the description of this application, "multiple" means two or more, unless otherwise expressly and specifically defined.

[0026] Please see Figure 1 - Figure 5 In one embodiment: A road marking removal device for traffic engineering includes a frame 1, on which a lifting wheel assembly 2, a heater 3, a perforation assembly 4, a spraying assembly 5, a removal assembly 6, and a generator set 7 are mounted. The heater 3 is used to heat the road marking and is located at the front end of the frame 1 in the direction of travel. The perforation assembly 4 is located on the side of the frame 1 opposite to the direction of travel. The spraying assembly 5 is located on the side of the perforation assembly 4 away from the heater 3. The removal assembly 6 is located on the side of the spraying assembly 5 away from the perforation assembly 4. The generator set 7 is a diesel generator. The diesel-driven design ensures the endurance during outdoor operations, meets the needs of long-term continuous construction, and achieves the technical effect of independent power supply without relying on external equipment for energy. The heater 3, perforation assembly 4, spraying assembly 5, and removal assembly 6 sequentially perform the road marking removal process. The road marking is first softened by heating by the heater 3, then the perforation assembly 4 punches evenly distributed fine holes in the softened road marking, then the spraying assembly 5 sprays a solvent onto the road marking, and finally the removal assembly 6 removes the road marking and recovers the impurities.

[0027] Furthermore, heater 3 is installed at the bottom of the chassis 1. Heater 3 is an electric heating device powered by generator set 7. Electric heating has the advantages of rapid heating and controllable temperature. Its heating element adopts an infrared radiation plate design, which can concentrate heat on the marking area to avoid energy waste. The heating temperature is precisely controlled between 120℃ and 150℃. This temperature range can soften common paints such as hot melt marking and cold spray marking, reduce the viscosity of the paint, and destroy its physical adhesion to the road surface. It will not damage the aggregate structure of the asphalt pavement or the surface strength of the concrete pavement due to excessive temperature. The coverage of heater 3 is matched with the working width of the subsequent hole-laying component 4.

[0028] Furthermore, the perforation assembly 4 is used to perforate the heated marking lines. The perforation assembly 4 includes a rotating roller 41, which is rotatably mounted on the frame 1. Multiple rows of mounting holes are arranged in a circumferential array on the rotating roller 41, and sliding sleeves 42 are slidably inserted into these holes. The sliding sleeves 42 on the rotating roller 41 are also arranged in a multiple circumferential array. The frame 1 is equipped with a drive component for driving the rotating roller 41 to rotate. The drive component includes a motor, two pulleys, and a transmission belt. The motor is mounted on the frame 1 and is powered by a generator set 7. The pulleys are connected to the rotating roller 41 and the motor output shaft respectively. A transmission belt is fitted onto the two pulleys. After the motor starts, the rotating roller 41 rotates through the transmission action of the two pulleys and the transmission belt. When the rotating roller 41 rotates, the multiple rows of sliding sleeves 42 on its outer wall contact the ground sequentially. Because the markings protrude from the ground, the ends of the sliding sleeves 42 are rounded to prevent damage to the ground when they contact it. A perforating awl 43 is installed in the mounting hole, and the perforating awl 43 slides into the sliding sleeve 42. A first spring is provided between the sleeve 42 and the mounting hole. The perforating cone 43 can protrude from the end of the sleeve 42 away from the roller 41, while the sleeve 42 in contact with the marking line is retracted into the mounting hole by the reaction force of the protruding marking line. The end of the perforating cone 43 is flush with the end of the sleeve 42. When the sleeve 42 is retracted into the mounting hole, the end of the perforating cone 43 protrudes, and the end of the perforating cone 43 can penetrate the softened marking line, thereby forming a fine hole. Therefore, when the roller 41 rotates, the perforating cones 43 in the multiple rows of sleeves 42 can be used to puncture the marking line below. The markings are perforated to make the softened markings full of fine holes. When the sliding sleeve 42 is removed from the marking, the sliding sleeve 42 rebounds and returns to its original position by the elastic force of the first spring. In actual operation, each row of sliding sleeves 42 can cover the width of the conventional markings, and its two ends are in contact with the ground on both sides of the markings. This means that in each row of sliding sleeves 42, the middle part of the sliding sleeves 42 is in contact with the markings and retracts to protrude the drilling cone 43, while the sliding sleeves 42 at both ends are in contact with the ground and do not expose the drilling cone 43, so that the drilling cone 43 will not damage the ground.

[0029] Furthermore, the spraying assembly 5 is used to spray the solvent onto the marking line behind the perforations. The spraying assembly 5 includes a liquid tank 51 and a sprayer 52. The liquid tank 51 is mounted on the vehicle frame 1, and the sprayer 52 is mounted on the bottom of the vehicle frame 1. A liquid pipe connects the liquid tank 51 and the sprayer 52. The liquid tank 51 is used to store the special solvent for marking lines. The liquid tank 51 is equipped with a liquid level sensor, a heating rod, and a booster pump. The liquid level sensor monitors the remaining amount of solvent in real time and prompts for replenishment via an indicator light. The heating rod is used to heat the solvent to optimize the reaction effect. The liquid pipe is made of corrosion-resistant high-pressure hose. The sprayer 52 adopts a multi-nozzle array design, with a nozzle coverage area larger than the width of conventional marking lines. The booster pump delivers the solvent in the liquid tank 51 to the sprayer 52 through the liquid pipe. The sprayer 52 sprays the solvent onto the marking line, allowing the solvent to cover the marking line and quickly penetrate into the marking line through the fine perforations. It then reacts chemically with the softened paint, destroying the molecular structure of the paint and causing it to change from a solid state to a semi-fluid state, making it easier to remove later.

[0030] In addition, the removal component 6 is used to remove and recycle dissolved road markings. The removal component 6 includes a recycling box 61 and a housing 62. The recycling box 61 is mounted on the frame 1, and the housing 62 is mounted on the bottom of the frame 1. A set of cleaning rollers 63 and a suction device 64 are installed inside the housing 62. The housing 62 is equipped with a driver for driving the cleaning rollers 63 to rotate and the suction device 64 to operate. A pipe connects the suction device 64 to the recycling box 61. The driver of the removal component 6 adopts a dual-motor design, powered by a generator set 7, to independently drive the cleaning rollers 63 and the suction device 64. The surface of the cleaning rollers 63 is covered with an elastic wear-resistant rubber layer, and flexible materials are provided on the rubber layer. The scraper teeth, when rotating, can efficiently scrape off the dissolved semi-fluid dynamic road marking paint. At the same time, the elastic material can adapt to slight undulations in the road surface and avoid scratching the road surface. A set of cleaning rollers 63 adopts a reverse rotation design to form opposing scraping forces, improving the cleaning effect. The casing 62 adopts a closed structure to prevent solvent evaporation and paint impurities from splashing. The bottom of the suction device 64 is equipped with a flexible cover, which makes flexible contact with the ground to ensure that the negative pressure generated by the suction device 64 can effectively adsorb the scraped paint impurities and residual solvent. The adsorbed mixture is transported to the recovery box 61 through a pipeline. The recovery box 61 is equipped with a filter screen to achieve solid-liquid separation, which facilitates subsequent impurity treatment.

[0031] Specifically, the lifting wheel assembly 2 can adjust the height of the frame 1 off the ground. The lifting wheel assembly 2 includes four cylinders 21, which are respectively installed at the four corners of the frame 1. The output end of the cylinder 21 is equipped with a wheel frame, and a roller 22 is rotatably installed on the wheel frame of the cylinder 21. The height adjustment function of the lifting wheel assembly 2 is achieved by the synchronous extension and retraction of the four cylinders 21. The cylinders 21 are pneumatically driven. When the frame 1 is moved during non-operation periods, the four cylinders 21 extend to their maximum stroke. At this time, the frame 1 is at its highest height off the ground. During the movement, the heater 3, the perforation assembly 4, the spraying assembly 5, and the cleaning assembly 6 are all suspended in the air, thereby avoiding friction or collision between the heater 3, the perforation assembly 4, the spraying assembly 5, and the cleaning assembly 6 and the ground protrusions, which could cause damage. When operation begins, the four cylinders 21 are activated to retract synchronously, causing the frame 1 to descend until the sliding sleeve 42 in the perforation assembly 4 contacts the ground. At the same time, a set of cleaning rollers 63 and the flexible cover of the suction device 64 also contact the ground, and the operation state begins.

[0032] In this embodiment, through the coordinated operation of heater 3, perforation assembly 4, spraying assembly 5, and cleaning assembly 6, heater 3 softens the marking by heating, thereby breaking the adhesion between the marking paint and the road surface and facilitating subsequent perforation. Perforation assembly 4 increases the contact area of ​​the solvent after perforating the marking, improving the penetration effect of the solvent. Subsequently, spraying assembly 5 sprays the solvent onto the softened and perforated marking, allowing the solvent to quickly penetrate the marking and accelerate its dissolution. Finally, the cleaning assembly 6 removes and recycles the marking, achieving residue-free removal and centralized treatment of pollutants, reducing the impact on the surrounding environment. Compared to grinding, using solvent to remove markings minimizes damage to the road.

[0033] Please see Figure 5 - Figure 7 In another embodiment: It is worth noting that the punching cone 43 includes a cone rod 431 and two semi-conical heads 434. The cone rod 431 is connected inside the mounting hole, and the two semi-conical heads 434 are hinged to the ends of the cone rod 431. There is a gap between the two semi-conical heads 434. An abutment rod 421 is connected inside the sliding sleeve 42. The abutment rod 421 is located in the gap between the two semi-conical heads 434. When the abutment rod 421 moves upward, it can push the two semi-conical heads 434 to open, and the two semi-conical heads 434 form a complete cone. This is useful for marking lines smaller than 7mm. When drilling holes, the two semi-conical heads 434 remain closed, thus creating round holes. The conventional thickness of existing road markings is 1mm-3mm, while the thickness of the raised portion of vibrating road markings (also known as deceleration markings) can reach 7mm-10mm. In this embodiment, the gap height between the two semi-conical heads 434 is 7mm. Therefore, when the sliding sleeve 42 retracts upwards in contact with the road marking, it drives the contact rod 421 to move axially synchronously. When the movement of the sliding sleeve 42 and the contact rod 421 is less than 7mm, the two semi-conical heads 434 drill holes normally. When the movement of the abutment rod 421 exceeds 7mm, it indicates that a hole is being drilled in the raised part of the vibrating marker. The abutment rod 421 contacts the top of the gap between the two semi-conical heads 434, thereby applying force to the two semi-conical heads 434. There is a movable gap between the hinge of the semi-conical head 434 and the inner wall of the sliding sleeve 42. When the displacement of the sliding sleeve 42 exceeds 7mm, the movable gap between the semi-conical head 434 and the sliding sleeve 42 is exposed. Therefore, when the abutment rod 421 contacts the top of the gap and continues to move to apply force, the two semi-conical heads 434... The cones 434 open synchronously, allowing the two semi-cones 434 to first penetrate the oscillating marking and then open to enlarge the hole, achieving the technical effect of enlarging the hole. This further increases the contact area and penetration depth of the subsequent solvent, ensuring that the bottom coating of the oscillating marking can also be fully dissolved and avoiding the residue of the bottom coating. When the sliding sleeve 42 is removed from the marking, the sliding sleeve 42 rebounds and resets under the elastic force of the first spring. During this process, the inner wall edge of the sliding sleeve 42 applies a force to the opened semi-cones 434, causing the two semi-cones 434 to reset and close.

[0034] Please see Figure 6 - Figure 9 In another embodiment: Two wedges 432 are embedded and slidably connected to the tapered rod 431. A sliding shaft 433 is slidably inserted into the tapered rod 431. The two ends of the sliding shaft 433 are respectively provided with a round head and a pointed head. One end of the round head of the sliding shaft 433 slides through into the interior of the rotating roller 41, and the pointed head of the sliding shaft 433 contacts the two wedges 432. A second spring is provided between the two wedges 432. When the sliding shaft 433 moves towards the wedges 432, it can drive the two wedges 432 to protrude from the outer wall of the tapered rod 431. After the wedges 432 protrude from the outer wall of the tapered rod 431, they can restrict the movement of the roller. When the sliding sleeve 42 retracts, a sliding rod 44 is slidably connected inside the rotating roller 41. When the sliding rod 44 moves, it can push the sliding shaft 433 to move closer to the wedge block 432 through the round head. A bidirectional lead screw 45 is rotatably connected inside the rotating roller 41. The bidirectional lead screw 45 is provided with two first external threads in opposite directions. The two sliding rods 44 are respectively threaded to the two first external threads. When the bidirectional lead screw 45 rotates clockwise, it can drive the two sliding rods 44 to move closer to each other through the two first external threads. When it rotates counterclockwise, it can drive the two sliding rods 44 to move away from each other.

[0035] It is worth noting that when there are gaps in the asphalt pavement, scratches on the cement pavement, or uneven road surfaces, the sliding sleeve 42 will experience irregular contraction when it comes into contact with these uneven parts. This will cause the semi-cone head 434 to make hard contact with the road surface, resulting in wear and affecting the drilling accuracy and service life. Under this condition, the operator can rotate the double-sided lead screw 45 clockwise, using its two oppositely oriented first external threads to drive the two sliding rods 44 to move synchronously from both ends of the rotating roller 41 towards the center, thus connecting with the multiple rows of... The sliding sleeve 42 and the corresponding sliding shaft 433 are divided into multiple rings radially according to the roller 41. When the sliding rod 44 moves, it will contact the multiple rings of sliding shaft 433 in sequence. When the sliding rod 44 abuts against the round end of the sliding shaft 433, the edge of the sliding rod 44 applies a thrust to the round end, forcing the sliding shaft 433 to move axially towards the wedge 432, so that the pointed end of the sliding shaft 433 squeezes the two wedges 432. The contact surfaces between the two wedges 432 and the sliding shaft 433 are both set as beveled surfaces. The sliding shaft 433 and the wedges 432 are in contact with the wedges 432. When pressure is applied, the two wedges 432 overcome the elastic force of the second spring and slide to both sides, protruding from the outer wall of the cone rod 431. The protruding wedges 432 move to the movement trajectory of the sliding sleeve 42 and form a resisting limit on the sliding sleeve 42, thereby restricting the contraction of the sliding sleeve 42 and achieving the technical effect of locking the sliding sleeve 42. As the sliding rod 44 moves towards the center of the rotating roller 41, it starts locking from the outermost sliding sleeve 42 and gradually adds the number of locking circles. The two sliding sleeves 42 move towards the middle at the same time, so the sliding sleeves 42 at both ends of the rotating roller 41 can lock from both ends towards the middle circle. This locking method can accurately fix the sliding sleeves 42 in contact with the ground on both sides of the marking, ensuring that the sliding sleeves 42 always remain in the extended state and will not be triggered to contract due to ground undulations. This keeps the sliding sleeves 42 in contact with the ground in a fixed state, thereby ensuring the support effect and avoiding damage to the internal semi-cone head 434. At the same time, it does not affect the normal extension and contraction of the sliding sleeves 42 in the middle corresponding to the marking area, taking into account both operational stability and flexibility.

[0036] More specifically, the two ends of the bidirectional lead screw 45 protrude from the two ends of the rotating roller 41, and a handwheel 46 is connected to the end of the bidirectional lead screw 45. A sliding frame 47 is connected to the bidirectional lead screw 45, and a nut ring 48 is slidably sleeved on the sliding frame 47. The outer wall of the rotating roller 41 has a second external thread, and the nut ring 48 is threadedly connected to the second external thread. The sliding frame 47 has scale lines; the scale lines correspond to the number of turns of the sliding sleeves 42 on the rotating roller 41. Numbers are marked next to the scale lines, and the numbers are all even numbers. The size of the number is consistent with the number of locked sliding sleeves 42. For example, the number 2 corresponds to two sliding sleeves 42 locked from both ends of the rotating roller 41 towards the middle, the number 4 corresponds to four sliding sleeves 42 locked, and so on. The operator turns the handwheel 46. When the double-acting screw 45 rotates, the sliding frame 47 rotates synchronously with the double-acting screw 45. The sliding frame 47 then drives the nut ring 48 to rotate synchronously. When the nut ring 48 rotates, it uses the second external thread to move along the axial direction of the roller 41. The moving distance of the nut ring 48 corresponds to the scale line. When the nut ring 48 is next to a certain number, it means that the slide rod 44 has moved a certain distance and locked the corresponding number of sliding sleeves 42. For example, if the nut ring 48 is next to the number 4, it means that four sliding sleeves 42 are locked. Therefore, through the cooperation of the scale line and the nut ring 48, the operator can intuitively judge the number of sliding sleeves 42 that are locked, which makes it convenient for the operator to quickly adjust according to the width of the mark and improve the work efficiency.

[0037] When using this traffic marking removal device, the generator set 7 is started, and the four cylinders 21 in the lifting wheel assembly 2 retract synchronously, causing the wheel frame and rollers 22 to move downwards, lowering the entire vehicle frame 1 until the sliding sleeve 42 in the perforation assembly 4 contacts the ground. At the same time, the flexible cover of the cleaning roller 63 and the suction device 64 in the removal assembly 6 also adheres to the ground, completing the preparation for operation. During operation, the device moves along the marking, and the heater 3 located at the forefront of the vehicle frame 1 in the direction of travel is activated, heating the marking to 120℃-150℃ to soften the marking and destroy its adhesion to the road surface. Subsequently, the vehicle frame 1 continues to move, and the drive unit in the perforation assembly 4... When the machine is started, it drives the rotating roller 41 to rotate. The sliding sleeves 42, which are arranged in a circular array on the rotating roller 41, contact the ground in sequence as the roller 41 rotates. The sliding sleeve 42 that contacts the marking line is retracted into the mounting hole by the reaction force, causing the semi-conical head 434, which is slidably inserted into the mounting hole, to protrude and penetrate the softened marking line to form a fine hole. The first spring between the sliding sleeve 42 and the mounting hole provides power for the sliding sleeve 42 to rebound and reset after it is removed from the marking line. For vibrating marking lines with a thickness greater than 7mm, the abutment rod 421 moves upward to open the two semi-conical heads 434 to expand the hole. If the working surface is uneven, the operator rotates the bidirectional screw 45. The handwheel 46 at the end drives the double-acting lead screw 45 to rotate, which in turn drives the two sliding rods 44 to move towards the center through the two opposite first external threads on its surface. The sliding rods 44 push the sliding shaft 433 to move, causing the wedge block 432 to protrude from the outer wall of the cone rod 431 and lock the sliding sleeve 42, thus preventing wear on the semi-cone head 434. The scale line on the sliding frame 47 matches the nut ring 48, allowing for a direct visual determination of the number of locking sleeves 42. After the holes are laid out, the spraying assembly 5 is activated. The heating rod in the liquid tank 51 heats the solvent, and the booster pump delivers the solvent to the sprayer 52 through a corrosion-resistant high-pressure hose. The sprayer 52 sprays the solvent onto the perforated marking line through a multi-nozzle array. The solvent penetrates through the fine pores and reacts with the softened coating, making it semi-fluid. Finally, the driver in the cleaning component 6 is activated, driving the cleaning roller 63 to rotate in opposite directions to scrape off the dissolved markings. At the same time, the suction device 64 is activated, using a flexible cover to absorb the scraped coating impurities and residual solvent, which are then transported through a pipeline to the recovery box 61. The filter screen in the recovery box 61 achieves solid-liquid separation, completing the impurity recovery. After the operation is completed, the four cylinders 21 are activated to extend to their maximum stroke, raising the frame 1. The heater 3, the perforation component 4, the spraying component 5, and the cleaning component 6 are all suspended in the air, facilitating device movement and preventing damage to components when not in operation.

[0038] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A road marking removal device for traffic engineering, comprising a vehicle frame (1), characterized in that: The vehicle frame (1) is equipped with a lifting wheel assembly (2), a heater (3), a perforation assembly (4), a spraying assembly (5), a cleaning assembly (6), and a generator set (7). The lifting wheel assembly (2) can adjust the height of the frame (1) off the ground; The heater (3) is used to heat the markings; The perforation assembly (4) is used to perforate the heated marking line; The spraying assembly (5) is used to spray the solvent onto the marking line after the holes; The cleaning component (6) is used to clean and recycle the dissolved markings.

2. The traffic marking removal device according to claim 1, characterized in that: The perforated assembly (4) includes a rotating roller (41), which is rotatably mounted on the frame (1). The rotating roller (41) has multiple rows of mounting holes arranged in a circumferential array. A sliding sleeve (42) is slidably inserted into the mounting hole. The frame (1) is provided with a driving component for driving the rotating roller (41) to rotate.

3. A traffic marking removal device according to claim 2, characterized in that: A punching cone (43) is installed in the mounting hole. The punching cone (43) is slidably inserted into the sliding sleeve (42). A first spring is provided between the sliding sleeve (42) and the mounting hole. The punching cone (43) can protrude from the end of the sliding sleeve (42) away from the rotating roller (41).

4. A road marking removal device for traffic engineering according to claim 3, characterized in that: The punch (43) includes a cone rod (431) and two half cone heads (434). The cone rod (431) is connected in the mounting hole. The two half cone heads (434) are hinged to the end of the cone rod (431). There is a gap between the two half cone heads (434). The sliding sleeve (42) is connected to an abutment rod (421). The abutment rod (421) is located in the gap between the two half cone heads (434). When the abutment rod (421) moves upward, it can push the two half cone heads (434) to open.

5. A road marking removal device for traffic engineering according to claim 4, characterized in that: Two wedges (432) are slidably connected to the conical rod (431). A sliding shaft (433) is slidably inserted into the conical rod (431). The two ends of the sliding shaft (433) are respectively provided with a round head and a pointed head. One end of the round head of the sliding shaft (433) slides through into the interior of the rotating roller (41), and the pointed head of the sliding shaft (433) contacts the two wedges (432). A second spring is provided between the two wedges (432). When the sliding shaft (433) moves towards the wedges (432), it can drive the two wedges (432). The wedge (432) protrudes from the outer wall of the cone rod (431) and can restrict the contraction of the sliding sleeve (42). The roller (41) is slidably connected to the sliding rod (44). When the sliding rod (44) moves, it can push the sliding shaft (433) to move closer to the wedge (432) through the round head. The roller (41) is rotatably connected to the double-acting screw (45). The double-acting screw (45) is provided with two first external threads in opposite directions. The two sliding rods (44) are respectively threaded to the two first external threads.

6. A road marking removal device for traffic engineering according to claim 5, characterized in that: The two ends of the bidirectional lead screw (45) protrude from the two ends of the rotating roller (41), and a handwheel (46) is connected to the end of the bidirectional lead screw (45). A sliding frame (47) is connected to the bidirectional lead screw (45), and a nut ring (48) is slidably sleeved on the sliding frame (47). A second external thread is provided on the outer wall of the rotating roller (41), and the nut ring (48) is threadedly connected to the second external thread. A scale line is provided on the sliding frame (47).

7. A road marking removal device for traffic engineering according to claim 1, characterized in that: The lifting wheel assembly (2) includes four cylinders (21), which are respectively installed at the four corners of the frame (1). The output end of the cylinder (21) is provided with a wheel frame, and a roller (22) is rotatably installed on the wheel frame of the cylinder (21). The heater (3) is installed at the bottom of the frame (1).

8. A traffic marking removal device according to claim 1, characterized in that: The spraying assembly (5) includes a liquid tank (51) and a sprayer (52). The liquid tank (51) is mounted on the frame (1), and the sprayer (52) is mounted on the bottom of the frame (1). A liquid pipe is connected between the liquid tank (51) and the sprayer (52).

9. A road marking removal device for traffic engineering according to claim 1, characterized in that: The cleaning assembly (6) includes a recycling bin (61) and a housing (62). The recycling bin (61) is mounted on the frame (1), and the housing (62) is mounted on the bottom of the frame (1). A set of cleaning rollers (63) and a suction device (64) are installed inside the housing (62). The housing (62) is provided with a driver for driving the cleaning rollers (63) to rotate and the suction device (64) to run. A pipe connects the suction device (64) to the recycling bin (61).

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