A device for removing road markings

Abstract

The present application belongs to the technical field of road marking engineering construction, and in particular to a device for removing road markings. The following scheme is proposed, which includes a suspended ultrasonic road marking remover connected to a removal vehicle through two flexible hinges, wherein the suspended ultrasonic road marking remover includes an upper shell and a lower shell that are interlocked with each other, wherein a horizontal plate is fixedly connected to the interior of the upper shell, and the bottom ends of the two flexible hinges both penetrate the top of the upper shell and are fixedly connected to the top of the horizontal plate. The present invention adjusts the water column pressure so that the suspended ultrasonic road marking remover is adaptively suspended at a high degree on the old road traffic markings to effectively avoid damage to the road surface; by adjusting the ultrasonic frequency and adding the suspended ultrasonic road marking remover, the old road traffic markings can be accurately removed, the road surface can be restored to its original state, and new road traffic markings can be re-drawn, and the present invention has the advantages of good removal effect, high removal efficiency, energy saving and environmental protection, etc.

Description

Technical Field

[0001] The present application relates to the technical field of road marking engineering construction, and in particular to a device for removing road markings. Specifically, it relates to a method of using the device of the present invention to cooperate with an ultrasonic generator to generate a number of fine high-pressure ultrasonic water columns, on the one hand, using the reaction force generated by the water column to suspend the device on the surface of the road marking, and on the other hand, using the water column to impact the surface of the road marking, forming ultrasonic "cavitation" to act on the surface of the old road marking, causing it to separate from the road surface and fall off. Background Art

[0002] Road traffic markings are traffic safety facilities consisting of various lines, arrows, and texts marked on the road surface. They are a concrete and visual manifestation of traffic regulations. They can ensure the safe, smooth, and orderly operation of vehicles, and are known as "silent traffic police". According to the national "Road Traffic Signs and Markings", the width of road traffic markings is 100mm, 150mm, 200mm, and 250mm. Road traffic marking paints are basically made of hot-melt polymer resins such as petroleum resins and modified rosin resins, mixed with inorganic pigments, fillers, etc., and can be divided into several types such as solvent-based, water-based, hot-melt, and two-component. They are marked on the road surface by special machinery, and different specifications of film thickness between 0.3mm and 3.0mm are formed according to the different materials selected. However, due to long-term wheel rolling friction and erosion by natural conditions such as rain and snow, as well as adjustments to traffic control plans, it is often necessary to remove some of the original old road markings and re-mark new road markings. If the original road markings are not completely removed, it will mislead pedestrians and drivers, which is very detrimental to traffic control.

[0003] At present, the main methods for removing old road markings in China are covering the old markings, chemical reagent removal, manual removal and mechanized removal. The old marking covering method is to cover the old markings with black paint. As the covering paint surface wears off, the covered old markings are exposed. Chemical reagent removal is to apply a special acid solution to the old markings and react with it to peel off from the road surface, but it will pollute the construction environment, easily cause personnel poisoning, and cause fires. It is not suitable for large-scale use. The manual removal method is to manually use tools such as hammers, brushes, and shovels to remove. This method is inefficient, labor-intensive, and cannot completely remove the markings. Mechanical removal mainly includes shot blasting, fire heating, grinding and milling, high-pressure water flushing, etc. These methods have many defects, such as low efficiency of removing marks, easy damage to the road surface, and secondary pollution. For this reason, people urgently need a new method for removing old markings to replace these traditional processes. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art and to propose a road marking removal device with high removal efficiency, good effect, no damage to the road surface structure and no secondary pollution. The device performs ultrasonic vibration on the pressurized water to generate tens of thousands of tiny bubbles in the water flow. These bubbles are formed and grown in the negative pressure area of ​​the longitudinal propagation of the ultrasonic wave, and quickly close in the positive pressure area. The shock wave emitted when the cavitation bubble suddenly closes can generate thousands of atmospheric pressures around it, and continuously generates instantaneous high pressure like a series of small "explosions" to continuously impact the surface of the old road traffic markings, so that the road surface layer composed of the old marking material layer is quickly peeled off, thereby achieving the purpose of removing the old markings. At the same time, the reaction force generated by the water column is used to suspend the device on the road marking surface, and the device determines the suspension height and impact force of the device by adjusting the sprayed water pressure. The device and the cleaning vehicle are flexibly connected, and the safety and cleaning effect of the cleaning device are not affected by the wheels of the cleaning vehicle when they encounter potholes on the road. It has a wide range of application prospects.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A road marking removal device comprises a suspended ultrasonic road marking remover connected to a removal vehicle via two flexible hinges, the suspended ultrasonic road marking remover comprises an upper shell and a lower shell which are interlocked with each other, a transverse plate is fixedly connected to the interior of the upper shell, and the bottom ends of the two flexible hinges both penetrate the top of the upper shell and are fixedly connected to the top of the transverse plate;

[0007] A partition is fixedly connected to the interior of the lower shell, a plurality of ultrasonic transducers are arranged side by side on the top of the partition, and a power interface electrically connected to the plurality of ultrasonic transducers is arranged on one side of the upper shell;

[0008] Two pressure main pipes are symmetrically fixedly connected to the bottom of the partition, and the two pressure main pipes are fixedly connected by a same T-shaped connecting pipe, and the other end of the T-shaped connecting pipe passes through one side of the lower shell and is connected to a sleeve;

[0009] The bottoms of the two pressure main pipes are fixedly connected with a plurality of pressure branch pipes at equal distances, the bottom ends of the plurality of pressure branch pipes pass through the bottom of the lower shell and are fixedly connected with flat-mouth nozzles, and the connection points of the plurality of pressure branch pipes and the pressure main pipes respectively correspond to the bottoms of the plurality of ultrasonic transducers.

[0010] Preferably, both ends of the two pressure main pipes respectively pass through two sides of the lower shell and are both provided with cleaning hole seals.

[0011] Preferably, the plurality of ultrasonic transducers are all piezoelectric ceramic transducers.

[0012] Preferably, each of the plurality of pressure branch pipes has a pressure chamber therein.

[0013] Preferably, the pressure chamber has a depth of 0.5-1.5 mm and a diameter of 0.12-0.6 mm.

[0014] Preferably, the suspended ultrasonic road marking remover has a length of 500 mm and a width of any one of four sizes: 120 mm, 170 mm, 220 mm, and 270 mm.

[0015] Preferably, the suspension height between the suspended ultrasonic road marking remover and the ground is 150-200 mm.

[0016] Preferably, the clearing speed of the suspended ultrasonic road marking remover is 200-260 m2 / 30 min.

[0017] Preferably, the water flow pressure in the pressure main pipe is 0.2~0.3Mpa.

[0018] Preferably, the ultrasonic frequency of the suspended ultrasonic road marking remover is 22-28 kHz.

[0019] The beneficial effects of the present invention are:

[0020] 1. The suspended ultrasonic road marking remover of the present invention controls a number of small pressure water columns through a pressure water pump regulator. During the flow of water, the non-contact force it receives balances its own gravity, so that the suspended ultrasonic road marking remover is directly above the old road traffic markings. It can adapt to the ups and downs of the road surface or the old road traffic markings, and always maintain a fixed height.

[0021] 2. The several fine ultrasonic pressure water columns sprayed out from the suspended ultrasonic road marking remover of the present invention cause the cavity to expand and explode, breaking the cells and directly and repeatedly impacting the old road traffic markings. On the one hand, it destroys the adhesion of the markings to the road surface layer, and on the other hand, it also causes the traffic marking material and the road surface material to have different bearing capacities, causing them to break and separate from the road surface layer, thereby achieving the removal of the road traffic markings.

[0022] The present invention adjusts the water column pressure so that the suspended ultrasonic road marking remover can adaptively suspend at a high level on the old road traffic markings to effectively avoid damage to the road surface; by adjusting the ultrasonic frequency and adding a suspended ultrasonic road marking remover, the old road traffic markings can be accurately removed, the road surface can be restored to its original state, and new road traffic markings can be re-drawn, which has the advantages of good cleaning effect, high cleaning efficiency, energy saving and environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1A three-dimensional diagram of the overall structure of a road marking removal device proposed by the present invention;

[0024] Figure 2 A road marking removal device proposed by the present invention Figure 1 Another perspective structural diagram of;

[0025] Figure 3 A front cross-sectional view of the overall structure of a road marking removal device proposed by the present invention;

[0026] Figure 4 A road marking removal device proposed by the present invention Figure 3 A further cross-sectional structural schematic diagram of ;

[0027] Figure 5 This is an enlarged structural diagram of part A of a road marking removal device proposed by the present invention;

[0028] Figure 6 A top view of the structure of a road marking removal device proposed by the present invention;

[0029] Figure 7 A bottom-up structural cross-sectional view of a device for removing road markings proposed by the present invention;

[0030] Figure 8 The present invention is a side structural sectional view of a device for removing road markings proposed by the present invention.

[0031] In the figure: 1. upper shell; 2. lower shell; 3. cross plate; 4. flexible hinge; 5. partition; 6. ultrasonic transducer; 7. power interface; 8. pressure main pipe; 9. T-type connecting pipe; 10. casing; 11. pressure branch pipe; 12. pressure chamber; 13. flat nozzle; 14. cleaning hole plug. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0033] Embodiment 1

[0034] Reference Figure 1-8A road marking cleaning device includes a suspended ultrasonic road marking cleaner connected to a cleaning vehicle through two flexible hinges 4. The suspended ultrasonic road marking cleaner includes an upper shell 1 and a lower shell 2 that are interlocked with each other. A transverse plate 3 is fixedly connected to the interior of the upper shell 1, and the bottom ends of the two flexible hinges 4 both penetrate the top of the upper shell 1 and are fixedly connected to the top of the transverse plate 3, and can drive the suspended ultrasonic road marking cleaner to work according to the movement of the vehicle. A partition 5 is fixedly connected to the interior of the lower shell 2, and a plurality of ultrasonic transducers 6 arranged side by side are arranged on the top of the partition 5. The upper shell 1 A power interface 7 electrically connected to multiple ultrasonic transducers 6 is provided on one side of the partition 5, two pressure main pipes 8 are symmetrically fixedly connected to the bottom of the partition 5, and the same T-shaped connecting pipe 9 is fixedly connected between the two pressure main pipes 8. The other end of the T-shaped connecting pipe 9 passes through one side of the lower shell 2 and is connected to a sleeve 10. The bottoms of the two pressure main pipes 8 are equidistantly fixedly connected with multiple pressure branch pipes 11, and the bottom ends of the multiple pressure branch pipes 11 pass through the bottom of the lower shell 2 and are fixedly connected with flat-mouth nozzles 13, and the connection points of the multiple pressure branch pipes 11 and the pressure main pipes 8 correspond to the bottoms of the multiple ultrasonic transducers 6 respectively.

[0035] Embodiment 2

[0036] Further improved on the basis of embodiment 1: Figure 1-8, a device for removing road markings, comprising a suspended ultrasonic road marking remover connected to a removal vehicle through two flexible hinges 4, the suspended ultrasonic road marking remover comprising an upper shell 1 and a lower shell 2 that are interlocked, the upper shell 1 is fixedly connected with a cross plate 3 inside, and the bottom ends of the two flexible hinges 4 both penetrate the top of the upper shell 1 and are fixedly connected to the top of the cross plate 3, and can drive the suspended ultrasonic road marking remover to work according to the movement of the vehicle, the lower shell 2 is fixedly connected with a partition 5 inside, a plurality of ultrasonic transducers 6 distributed side by side are arranged on the top of the partition 5, and the plurality of ultrasonic transducers 6 all adopt piezoelectric ceramic transducers, a power supply interface 7 electrically connected to the plurality of ultrasonic transducers 6 is arranged on one side of the upper shell 1, and two pressure main pipes 8 are symmetrically fixedly connected to the bottom of the partition 5, the two ends of the two pressure main pipes 8 respectively penetrate the two sides of the lower shell 2 and are provided with cleaning hole seals 14, when the pressure main pipes need to be cleaned When the pressure pipe 8 is removed, the cleaning hole plug 14 is opened to clean the dirt in the pressure main pipe 8. The two pressure main pipes 8 are fixedly connected with the same T-shaped connecting pipe 9. The other end of the T-shaped connecting pipe 9 passes through one side of the lower shell 2 and is connected with a sleeve 10. The bottoms of the two pressure main pipes 8 are fixedly connected with multiple pressure branch pipes 11 at equal intervals. The bottom ends of the multiple pressure branch pipes 11 pass through the bottom of the lower shell 2 and are fixedly connected with flat-mouth nozzles 13. The connection points of the multiple pressure branch pipes 11 and the pressure main pipe 8 correspond to the bottoms of the multiple ultrasonic transducers 6 respectively. The multiple pressure branch pipes 11 are provided with pressure chambers 12 inside. The depth of the pressure chamber 12 is 0.5-1.5 mm and the diameter is 0.12-0.6 mm. When the pressure water flow enters the pressure main pipe 8, after the vibration of the ultrasonic transducer 6, it passes through the pressure branch pipe 11, the pressure chamber 12 and the flat-mouth nozzle 13 in turn, and is sprayed at high speed onto the surface of the old road traffic marking to be removed.

[0037] In the present invention, the length of the suspended ultrasonic road marking remover is 500mm, and the width is any one of the four specifications of 120mm, 170mm, 220mm, and 270mm. According to the width of the old markings to be removed, the suspended ultrasonic road marking remover of the corresponding size can be selected to improve the flexibility of use.

[0038] In the present invention, the suspension height between the suspension type ultrasonic road marking remover and the ground is 150-200 mm.

[0039] In the present invention, the clearing speed of the suspended ultrasonic road marking remover is 200-260 m2 / 30 min.

[0040] In the present invention, the water flow pressure in the pressure main pipe 8 is 0.2-0.3Mpa.

[0041] In the present invention, the ultrasonic frequency of the suspended ultrasonic road marking remover is 22-28 kHz, which can be fine-tuned according to the effect of removing the old markings.

[0042] In the present invention, the suspended ultrasonic road marking remover controls a number of fine pressure water columns through a pressure water pump regulator, flows into the pressure chamber 12 after being throttled by a throttle, and then sprays onto the old road traffic markings through a flat nozzle 13. According to the "Bernoulli effect", the suspended ultrasonic road marking remover stably suspends above the old road traffic markings, and adaptively fluctuates up and down with the convexity or damage depression of the road surface or the old road traffic markings, and always maintains a fixed height. The huge amount of tiny bubbles generated by the ultrasonic vibration of the water medium generate shock waves at the moment of closure, causing a pressure change of 1012 to 1013 Pa around the bubbles, and repeatedly impacting the surface of the old road markings, using the different characteristics of the road marking material and the road surface material, because the marking acts on the road surface in a sticky manner, so different adhesion is generated between the materials, and the adhesion between the marking and the road surface is destroyed by using the ultrasonic water column, so that the adhesive layer of the marking is broken and the road surface is separated, so as to achieve the purpose of removing the old road traffic markings.

[0043] However, as is well known to those skilled in the art, the working principle and wiring method of the ultrasonic transducer 6 are commonplace, and are conventional means or common knowledge, and will not be elaborated here. Those skilled in the art may make any selections according to their needs or convenience.

[0044] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A road marking removal device, comprising a suspended ultrasonic road marking remover connected to a removal vehicle via two flexible hinges (4), It is characterized in that The suspended ultrasonic road marking remover comprises an upper shell (1) and a lower shell (2) which are interlocked with each other, a transverse plate (3) being fixedly connected to the interior of the upper shell (1), and the bottom ends of the two flexible hinges (4) both pass through the top of the upper shell (1) and are fixedly connected to the top of the transverse plate (3); A partition (5) is fixedly connected to the interior of the lower housing (2), a plurality of ultrasonic transducers (6) arranged side by side are provided on the top of the partition (5), and a power supply interface (7) electrically connected to the plurality of ultrasonic transducers (6) is provided on one side of the upper housing (1); Two pressure main pipes (8) are symmetrically fixedly connected to the bottom of the partition (5); the two pressure main pipes (8) are fixedly connected by a T-shaped connecting pipe (9); the other end of the T-shaped connecting pipe (9) passes through one side of the lower shell (2) and is connected to a sleeve (10); The bottoms of the two pressure main pipes (8) are fixedly connected to a plurality of pressure branch pipes (11) at equal distances, the bottom ends of the plurality of pressure branch pipes (11) pass through the bottom of the lower shell (2) and are fixedly connected to a flat nozzle (13), and the connection points of the plurality of pressure branch pipes (11) and the pressure main pipe (8) respectively correspond to the bottoms of the plurality of ultrasonic transducers (6).

2. A road marking removal device according to claim 1, It is characterized in that Both ends of the two pressure main pipes (8) respectively penetrate the two sides of the lower shell (2) and are both provided with cleaning hole sealing plugs (14).

3. A road marking removal device according to claim 1, It is characterized in that The plurality of ultrasonic transducers (6) are all piezoelectric ceramic transducers.

4. A road marking removal device according to claim 1, It is characterized in that A pressure chamber (12) is provided inside each of the plurality of pressure branch pipes (11).

5. A road marking removal device according to claim 4, It is characterized in that The pressure chamber (12) has a depth of 0.5-1.5 mm and a diameter of 0.12-0.6 mm.

6. A road marking removal device according to claim 1, It is characterized in that The suspended ultrasonic road marking remover has a length of 500 mm and a width of any one of four sizes: 120 mm, 170 mm, 220 mm, and 270 mm.

7. A road marking removal device according to claim 1, It is characterized in that The suspension height between the suspended ultrasonic road marking remover and the ground is 150-200 mm.

8. A road marking removal device according to claim 1, It is characterized in that The clearing speed of the suspended ultrasonic road marking remover is 200-260 m2 / 30 min.

9. A road marking removal device according to claim 1, It is characterized in that The water flow pressure in the pressure main pipe (8) is 0.2-0.3 MPa.

10. A road marking removal device according to claim 1, It is characterized in that The ultrasonic frequency of the suspended ultrasonic road marking remover is 22-28 kHz.

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