A road cleaning device

Abstract

The present invention discloses a road cleaning device, which includes a main cleaning mechanism, a suction mechanism, two extended cleaning mechanisms, and two extended driving mechanisms; both the main cleaning mechanism and the extended cleaning mechanisms include a base and a rotating spray bar mechanism; the rotating spray bar mechanism includes a rotating joint and a rotating spray bar, and rotating nozzles are arranged at both ends of the rotating spray bar; the rotating spray bar is arranged below the base, and the middle part of the rotating spray bar is connected to the base through the rotating joint, and the rotating nozzles are inclined downward and face each other; the suction mechanism is arranged at the main cleaning mechanism, and its suction port is rectangular and flat and faces the ground; the two extended driving mechanisms are arranged on both sides at the rear end of the base of the main cleaning mechanism, and the two extended cleaning mechanisms are respectively connected to the two extended driving mechanisms; the extended cleaning mechanism is further provided with a side spray water driving-off mechanism, and the side spray water driving-off mechanism includes a water broom and an opening driving mechanism. The present invention has the advantages of being able to clean relatively wide roads and curb stones and being able to suck up residual sewage.

Description

Technical Field

[0001] The present invention relates to the technical field of floor washing vehicles, and particularly relates to a road cleaning device. Background Art

[0002] At present, floor washing and sweeping vehicles have been widely used for road cleaning operations in urban areas. Most of the cleaning devices of traditional floor washing and sweeping vehicles adopt plastic or wire brooms and are equipped with a sweeping and washing system composed of high-pressure water guns arranged in a V shape.

[0003] Plastic brooms wear out quickly, while wire brooms are prone to damage the road surface. The water spraying effect of the water spraying system is poor, and it cannot effectively suppress dust. The sweeping and washing effect is not good. The local road surface of wider roads cannot be cleaned. After the operation, obvious sewage belts or mud residue residues will be left on both sides of the road surface. The left and right spraying spray bars of the floor washing and sweeping vehicle are designed relatively low, resulting in the nozzles on the outermost side of the spray bar being unable to clean the curbstone. During the cleaning process of the cleaning device of a cleaning vehicle with a high-speed rotating spray bar, under the impact of the water column ejected by the rotating spray bar, hard objects such as gravel and glass slag on the ground will rebound and impact the spray bar, causing great impact and serious wear on the spray bar and the nozzles of the spray bar, resulting in a short service life and a high replacement rate. Also, because the wear degrees of the spray bars are inconsistent, the dynamic balance of the spray bars does not meet the requirements, and the service life of the rotary joint is also severely affected. Summary of the Invention

[0004] Therefore, it is necessary to provide a road cleaning device to solve the problems that the cleaning device of the existing floor washing and sweeping vehicle cannot clean wider roads and curbstones and there will be residual sewage on the road surface after cleaning.

[0005] To achieve the above object, the inventor provides a road cleaning device, which includes a main cleaning mechanism, a suction mechanism, two extended cleaning mechanisms, and two extended driving mechanisms;

[0006] Both the main cleaning mechanism and the extended cleaning mechanism include a base and a rotating spray bar mechanism; the rotating spray bar mechanism includes a rotary joint and a rotating spray bar, and rotating nozzles are arranged at both ends of the rotating spray bar; the rotating spray bar is arranged below the base, and the middle of the rotating spray bar is connected to the base through the rotary joint. The rotating nozzles are all inclined downward and are arranged in a cross shape;

[0007] The suction mechanism is arranged at the rear end of the base of the main cleaning mechanism. The suction port of the suction mechanism is rectangular and flat and faces the ground;

[0008] Two extended driving mechanisms are arranged on both sides of the rear end of the base of the main cleaning mechanism. The two extended cleaning mechanisms are respectively connected to the two extended driving mechanisms and can be moved to the outside of the side end of the base of the main cleaning mechanism under the drive of the extended driving mechanisms;

[0009] The extended cleaning mechanism is also provided with a side spray water driving mechanism. The side spray water driving mechanism includes a water broom and an opening driving mechanism. The water broom includes a water guiding rod and a spray head. The spray head is arranged at the water guiding rod and is communicated with the water guiding rod. The water guiding rod is hinged to the extended cleaning mechanism. The opening driving mechanism is respectively hinged to the extended cleaning mechanism and the water guiding rod, and is used for driving the water guiding rod to turn outside the side end of the extended cleaning mechanism.

[0010] As a preferred structure of the present invention, the extended driving mechanism is a cylinder, an oil cylinder or a linear motor.

[0011] As a preferred structure of the present invention, it further includes two lifting driving mechanisms and two guide sleeves. The two guide sleeves are respectively fixedly arranged on both sides of the two ends of the base of the main cleaning mechanism. The extended cleaning mechanism is provided with a guide rod. The guide rod passes through the guide sleeve and can rotate relative to the guide sleeve. The bodies of the two extended driving mechanisms are both connected to the base of the main cleaning mechanism. The output shafts of the two extended driving mechanisms are respectively connected to the two guide rods through ball joints. The two lifting driving mechanisms are both hinged to the main cleaning mechanism and are respectively hinged to the two extended cleaning mechanisms for lifting the extended cleaning mechanisms.

[0012] As a preferred structure of the present invention, the lifting driving mechanism is a single-acting cylinder.

[0013] As a preferred structure of the present invention, the extended cleaning mechanism is provided with a connecting rod. The body of the lifting driving mechanism is hinged to the main cleaning mechanism, and the output shaft of the lifting driving mechanism is movably arranged through the connecting rod along the connecting rod.

[0014] As a preferred structure of the present invention, the opening driving mechanism is a cylinder, and it further includes a fixed seat and a spring. The fixed seat stands on the extended cleaning mechanism, and the fixed seat is provided with an ear plate. The ear plate is fixed with a middle rotating shaft, and the middle rotating shaft is hinged with a middle rotating kit. The water guiding rod is hinged to one end of the middle rotating kit. The output shaft of the opening driving mechanism is hinged to the other end of the middle rotating kit, and the body of the opening driving mechanism is hinged to the fixed seat. The two ends of the spring are respectively connected to the water guiding rod and the middle rotating kit to limit the opening angle of the water guiding rod relative to the middle rotating kit.

[0015] As a preferred structure of the present invention, the side spray water driving mechanism further includes a mudguard and a mudguard connecting rod. The mudguard is connected to the extended cleaning mechanism through the mudguard connecting rod, and the mudguard is vertically located outside the front end of the extended cleaning mechanism for shielding impurities splashed back by the water broom spraying.

[0016] As a preferred structure of the present invention, it further includes a quick cleaning spray bar. The quick cleaning spray bar is provided with at least two nozzles, and each nozzle is arranged in sequence along the length direction of the quick cleaning spray bar; the quick cleaning spray bar is arranged at the front end of the main cleaning mechanism, and the nozzles face the gap between the main cleaning mechanism and the bottom surface.

[0017] As a preferred structure of the present invention, the rotating spray bar mechanism further includes a dust shielding disc and at least two lifting seats; at least two horizontally arranged disc mounting frames are connected to the circumference of the dust shielding disc, the dust shielding disc is suspended directly below the rotary joint, the lifting seats are vertically connected to the base, and are connected to the disc mounting frames; the rotating spray bar is located between the base and the dust shielding disc.

[0018] Different from the prior art, the road cleaning device described in the above technical solution includes a main cleaning mechanism, a suction mechanism, two extended cleaning mechanisms, and two extended driving mechanisms; both the main cleaning mechanism and the extended cleaning mechanism include a base and a rotating spray bar mechanism; the rotating spray bar mechanism includes a rotary joint and a rotating spray bar, and rotating nozzles are arranged at both ends of the rotating spray bar; the rotating spray bar is arranged below the base, and the middle of the rotating spray bar is connected to the base through the rotary joint. The rotating nozzles are all inclined downward and face each other crosswise. After high-pressure water is introduced into the rotating spray bar, the two crosswise arranged rotating nozzles rotate on the inclined road surface under the reaction force of spraying; the suction mechanism is arranged at the rear end of the base of the main cleaning mechanism. The suction port of the suction mechanism is rectangular and flat and faces the ground. Such a setting can ensure the complete suction of sewage and other contaminants on the road surface; the two extended driving mechanisms are arranged on both sides of the rear end of the base of the main cleaning mechanism. The two extended cleaning mechanisms are respectively connected to the two extended driving mechanisms and can be moved outside the side end of the base of the main cleaning mechanism under the drive of the extended driving mechanisms. Such a setting enables the cleaning width to be widened when the road surface is wide, can adapt to road surfaces of different widths, ensure the cleaning of road surfaces of different widths, and improve the operation efficiency; the extended cleaning mechanism is also provided with a side spray water driving mechanism. The side spray water driving mechanism includes a water broom and an opening driving mechanism. The water broom includes a water guiding rod and a nozzle. The nozzle is arranged at the water guiding rod and is communicated with the water guiding rod; the water guiding rod is hinged to the extended cleaning mechanism, and the opening driving mechanism is respectively hinged to the extended cleaning mechanism and the water guiding rod for driving the water guiding rod to flip outside the side end of the extended cleaning mechanism. Such a setting can clean the curbstone with the water broom when there is a curbstone on the roadside, and the water broom will not damage the road surface and is not easily damaged. Therefore, the road cleaning device has the advantages of being able to clean wide roads and curbstones and being able to suck up residual sewage. Description of the Drawings

[0019] Figure 1 The structure of the road cleaning device according to an embodiment of the present invention Figure 1 ;

[0020] Figure 2 The structure of the road cleaning device according to an embodiment of the present invention Figure 2 ;

[0021] Figure 3 The structure of the road cleaning device according to an embodiment of the present invention Figure 3 ;

[0022] Figure 4 The bottom view of the road cleaning device according to an embodiment of the present invention;

[0023] Figure 5 The structure diagram of the side spray water driving mechanism according to an embodiment of the present invention;

[0024] Figure 6 The exploded view of the side spray water driving mechanism according to an embodiment of the present invention;

[0025] Figure 7 The structure diagram of the water guide rod according to an embodiment of the present invention;

[0026] Figure 8 The vertical sectional view of the main cleaning mechanism according to an embodiment of the present invention;

[0027] Figure 9 The side sectional view of the water guide rod according to an embodiment of the present invention.

[0028] Explanation of reference numerals:

[0029] 1, base; 100, cover;

[0030] 2, rotary joint;

[0031] 3, rotary spray rod; 300, rotary nozzle; 301, nozzle protective sleeve;

[0032] 4, suction mechanism; 400, suction port;

[0033] 5, water guide rod; 500, end nozzle;

[0034] 6, spray head;

[0035] 7, opening drive mechanism;

[0036] 8, extension drive mechanism;

[0037] 9, ball joint;

[0038] 10, guide sleeve;

[0039] 11, guide rod;

[0040] 12, lifting drive mechanism; 1200, connecting rod;

[0041] 13. Ball bearing joint;

[0042] 14. Fixed seat; 1400. Ear plate; 1401. Transfer kit; 1402. Spring; 1403. Limit block; 1404. Intermediate rotating shaft; 1405. Pull pin; 1406. Cylinder connecting piece; 1407. Fixed shaft; 1408. Flange shaft; 1409. Friction plate; 14010. Baffle;

[0043] 15. Fender;

[0044] 16. Fender connecting rod;

[0045] 17. Quick cleaning spray bar; 1700. Nozzle;

[0046] 18. Dust shield disc; 1800. Leakage groove; 1801. Hoisting seat; 1802. Disc mounting bracket; 1803. Disc fixing bracket;

[0047] 19. Universal caster;

[0048] 20. Strip block. Detailed implementation manners

[0049] To illustrate in detail the technical content, structural features, achieved objectives and effects of the technical solution, the following is a detailed description in conjunction with specific embodiments and accompanied by drawings.

[0050] Please refer to Figure 1 and Figure 2 , the present invention provides a road cleaning device that can be installed on a cleaning vehicle for cleaning roads. In particular, it can adapt to roads of different widths, clean the curbstone on the side of the road, and suck out the residual sewage during the cleaning process to ensure that there are no impurities such as sewage remaining on the road surface after cleaning, and it is a road cleaning device with a high cleaning effect.

[0051] In a specific embodiment, the road cleaning device includes a main cleaning mechanism, a suction mechanism 4, two extended cleaning mechanisms, and two extended driving mechanisms 8; both the main cleaning mechanism and the extended cleaning mechanism are used to complete the road surface cleaning operation. When the road surface width is not particularly wide, only the main cleaning mechanism can be used for road surface cleaning operation. When the road surface width is relatively wide and the main cleaning mechanism cannot complete the cleaning operation of the entire road surface, the extended cleaning mechanism can be used to broaden the cleaning width of the main cleaning mechanism, and the entire relatively wide road surface can be simply and conveniently cleaned through the extended cleaning mechanism; the extended driving mechanism 8 is used to drive the extended cleaning mechanism to be retracted to the main cleaning mechanism or extended to the outside of the side end of the main cleaning mechanism. When the road surface width is not particularly wide, the extended driving mechanism 8 is used to retract the extended cleaning mechanism to the main cleaning mechanism. When the road surface width is relatively wide, the extended driving mechanism 8 is used to extend the extended cleaning mechanism to the outside of the side end of the main cleaning mechanism.

[0052] Both the main cleaning mechanism and the extended cleaning mechanism include a base 1 and a rotating spray bar mechanism. Specifically, the base 1 may include a cover 100. During the cleaning process, the road cleaning device moves under the drive of the cleaning vehicle. Therefore, universal casters 19 can be installed under the base 1. Such a setting can not only adjust the height of the base 1 relative to the ground during the operation of the road cleaning device to ensure that the rotating spray bar mechanism does not rub against the ground, but also assist the base 1 to move smoothly on the ground along with the cleaning vehicle.

[0053] The rotating spray bar mechanism includes a rotating joint 2 and a rotating spray bar 3. Rotating nozzles 300 are provided at both ends of the rotating spray bar 3; the rotating spray bar 3 is arranged below the base 1, and the middle of the rotating spray bar 3 is connected to the base 1 through the rotating joint 2. The rotating nozzles 300 are all inclined downward and are arranged crosswise. High-pressure water can enter the rotating spray bar 3 from the rotating joint 2 and finally be sprayed to the ground from the two rotating nozzles 300. Since the two rotating nozzles 300 are both inclined and crosswise arranged, under the reaction force of the high-pressure water sprayed to the ground, the rotating spray bar 3 will be driven to rotate relative to the rotating joint 2, and at the same time, the high-pressure water continuously sprays to the ground from the rotating nozzles 300, so that the ground can be cleaned by rotation, and the cleaning effect is good.

[0054] Please refer to Figure 4 and Figure 8 , in order to prevent the rotating nozzles 300 from spraying high-pressure water and rebounding gravel or broken glass, resulting in damage to the rotating nozzles 300, the rotating spray bar 3 or the rotating joint 2. Therefore, in a further embodiment, the rotating spray bar mechanism further includes a dust-proof disc 18 and at least two lifting seats 1801; at least two horizontally arranged disc mounting brackets 1802 or disc fixing brackets 1803 are connected to the circumference of the dust-proof disc 18. The dust-proof disc 18 is suspended directly below the rotating joint 2. The lifting seats 1801 are vertically connected to the lower part of the base 1 and are connected to the disc mounting brackets 1802; the rotating spray bar 3 is located between the base 1 and the dust-proof disc 18. Such a setting enables the dust-proof disc 18 to block the rebounding gravel, dust, broken glass, etc. under the action of high-pressure water, effectively protecting the rotating spray bar mechanism to ensure its long life and not affecting the normal operation of the rotating spray bar mechanism.

[0055] The lifting seats 1801 can be welded to the cover 100 or installed on the cover 100 by bolt connection. Since the water column sprayed by the rotating nozzles 300 strikes the disc mounting bracket for a long time, the position of the disc mounting bracket being struck will be worn and the strength will be insufficient and break. In order to reduce the maintenance cost and manufacturing cost, the disc mounting bracket is installed on the disc fixing bracket 1803 by bolts. When the disc mounting bracket breaks, directly replace the bracket fittings, rather than replacing the entire disc, thus reducing the replacement cost.

[0056] Under the action of water pressure, while the rotating spray bar mechanism sprays out water columns, it is pushed by the reaction force and rotates at high speed to wash the road surface. During the washing process, hard objects such as sand and gravel rebounding impact on the dust-proof disc 18. Since the dust-proof disc 18 is fixed and different from the rotating spray bar 3 that impacts with sand and gravel during high-speed rotation, its wear is slower. Compared with directly acting on the rotating spray bar 3, when impacting on the dust-proof disc 18, the service life of the dust-proof disc 18 is longer, which protects the rotating spray bar 3, extends the service life of the rotating spray bar 3, reduces the replacement rate of the rotating spray bar 3, saves costs, and at the same time slows down the impact on the service life of the rotary joint 2 due to the dynamic balance of the rotating spray bar 3 not meeting the requirements caused by wear.

[0057] In another embodiment, in order to prevent the rotation of the rotating spray bar 3 from being affected by the accumulated sand and soil due to excessive accumulation, a leakage groove 1800 is provided in the dust-proof disc 18. The width of the leakage groove 1800 is sufficient for the sand and soil to slide down. When the sand and soil accumulate to a certain extent, the sand and soil will slide down along the leakage groove 1800, and the rotating spray bar 3 will not be affected by the accumulated sand and soil.

[0058] In order to further protect the rotating nozzle 300, in a further embodiment, a nozzle protection sleeve 301 is also provided. The nozzle protection sleeve 301 is sleeved at the rotating nozzle 300. The purpose of such a design is to protect the rotating nozzle 300 and prevent it from being worn by the sand and gravel on the ground, thereby reducing the service life of the rotating nozzle 300.

[0059] According to the driving direction of the road sweeper, the bases 1 of the main sweeping mechanism and the extended sweeping mechanism are the rear end and the front end in sequence along the driving direction of the road sweeper. The suction mechanism 4 includes a fan, and two can be provided. The two suction mechanisms 4 are arranged on both sides at the rear end of the base 1 of the main sweeping mechanism. The suction port 400 of the suction mechanism 4 is rectangular and flat and is oriented towards the ground. The suction port 400 covers the entire rear end of the main sweeping mechanism. Such a setting enables the suction mechanism 4 to continuously extract the residual sewage in the area cleaned by the rotating spray bar mechanism as the road sweeper advances, ensuring the cleanliness of the ground after cleaning.

[0060] The expansion drive mechanism 8 can be a cylinder, an oil cylinder or a linear motor. In a specific embodiment, two expansion drive mechanisms 8 are arranged on both sides of the rear end of the base 1 of the main cleaning mechanism. The bodies of the two expansion drive mechanisms 8 are both connected to the base 1 of the main cleaning mechanism. The output shafts of the two expansion drive mechanisms 8 respectively face the two side ends of the base 1 of the main cleaning mechanism. The two extended cleaning mechanisms are respectively connected to the output shafts of the two expansion drive mechanisms 8. Such a setting enables the expansion drive mechanism 8 to drive the extended cleaning mechanism to move in the direction of the side end of the base 1 of the main cleaning mechanism after extending the output shaft until the extended cleaning mechanism moves outside the side end of the base 1 of the main cleaning mechanism, thus completing the deployment of the extended cleaning mechanism, that is, widening the cleaning width of the road cleaning device; after the expansion drive mechanism 8 shortens the output shaft, it can drive the extended cleaning mechanism in the opposite direction until the extended cleaning mechanism is located between the two side ends of the base 1 of the main cleaning mechanism, thus completing the folding of the extended cleaning mechanism.

[0061] In a further embodiment, it further includes two lifting drive mechanisms 12 and two guide sleeves 10; the two guide sleeves are respectively fixedly arranged on both sides of the two ends of the base of the main cleaning mechanism, and the axial direction of the guide sleeve is the same as the driving direction of the expansion drive mechanism. The extended cleaning mechanism and the expansion drive mechanism are respectively located at the two ports of the guide sleeve; the extended cleaning mechanism is provided with a guide rod 11, the guide rod passes through the guide sleeve, and can rotate relative to the guide sleeve and can move along the axial direction of the guide sleeve; the bodies of the two expansion drive mechanisms are both connected to the base of the main cleaning mechanism, and the output shafts of the two expansion drive mechanisms are respectively connected to the two guide rods passing through the guide sleeve through ball joints 9, such a setting enables the guide rod to rotate relative to the expansion drive mechanism; the two lifting drive mechanisms are both hinged to the main cleaning mechanism and are respectively hinged to the two extended cleaning mechanisms for lifting the extended cleaning mechanism. Such a setting enables that during the cleaning operation, if the extended cleaning mechanism is not needed, the lifting drive mechanism 12 can be started to lift the extended cleaning mechanism upward, and when the extended cleaning mechanism is needed, the lifting drive mechanism 12 can be started to lower the extended cleaning mechanism to contact the ground, and it does not affect the expansion and contraction of the expansion drive mechanism driving the extended cleaning mechanism.

[0062] In a further embodiment, a linear bearing or a shaft sleeve with an oil seal is fixed inside the guide sleeve 10 to ensure free and non-stuck sliding of the guide rod 11, and the strength and length of the guide sleeve 10 can ensure that it can bear the self-weight of the extended cleaning mechanism and will not tilt left and right under the action of external forces.

[0063] In a preferred embodiment, the lifting drive mechanism 12 is a single-acting cylinder. The cavity of the single-acting cylinder is contracted by air ventilation to make the piston rod of the cylinder contract, and after the air is cut off, the piston rod extends under the action of the spring force.

[0064] In order to ensure the normal operation of the lifting drive mechanism 12, in a further embodiment, the extended cleaning mechanism is provided with a connecting rod 1200. The body of the lifting drive mechanism 12 is hinged to the main cleaning mechanism, and the output shaft of the lifting drive mechanism 12 is movably disposed through the connecting rod 1200 along the connecting rod 1200. Specifically, the output shaft of the lifting drive mechanism 12 is connected to the connecting rod 1200 through a ball bearing joint 13. Such a setting enables the extended cleaning mechanism to move smoothly relative to the lifting drive mechanism 12 when the extended drive mechanism 8 drives the extended cleaning mechanism to move. When it is necessary to use the lifting drive mechanism 12 to lift or lower the extended cleaning mechanism to contact the ground, the lifting drive mechanism 12 can lift or lower the extended cleaning mechanism normally and stably.

[0065] There are curb stones on the side of some roads, and the curb stones are higher than the road surface. In order to be able to clean the curb stones, in a preferred embodiment, the extended cleaning mechanism is further provided with a side spraying and water driving mechanism. The side spraying and water driving mechanism includes a water broom and an opening driving mechanism 7. The water broom includes a water guiding rod 5 and a nozzle 6. The nozzle 6 is disposed at the water guiding rod 5 and is communicated with the water guiding rod 5. The water guiding rod 5 is hinged to the extended cleaning mechanism, and the opening driving mechanism 7 is respectively hinged to the extended cleaning mechanism and the water guiding rod 5 for driving the water guiding rod 5 to flip to the outside of the side end of the extended cleaning mechanism. When it is necessary to clean the curb stone, the opening driving mechanism 7 can be started to make the water broom rotate to the outside end of the extended cleaning mechanism.

[0066] Please refer to Figure 5 and Figure 6 , in a further embodiment, the opening driving mechanism 7 is a cylinder, and further includes a fixed seat 14 and a spring 1402. The fixed seat 14 stands on the extended cleaning mechanism, and the fixed seat 14 is provided with an ear plate 1400. The ear plate 1400 is fixed with a middle rotating shaft, and the middle rotating shaft is hinged with a middle rotating kit 1401. The water guiding rod 5 is hinged to one end of the middle rotating kit 1401, the output shaft of the opening driving mechanism 7 is hinged to the other end of the middle rotating kit 1401, and the body of the opening driving mechanism 7 is hinged to the fixed seat 14. The two ends of the spring 1402 are respectively connected to the water guiding rod 5 and the middle rotating kit. One end of the spring is connected to the pull pin 1405 of the middle rotating kit, and the other end is connected to the pull pin 1405 of the water guiding rod to limit the opening angle of the water guiding rod 5 relative to the middle rotating kit 1401.

[0067] In a further embodiment, the opening drive mechanism 7 is connected to the fixed seat 14 through the fixed shaft 1407. The piston rod of the opening drive mechanism 7 is connected to the cylinder connecting piece 1406, and the cylinder connecting piece 1406 is connected to the transfer kit 1401 through the flange shaft 1408. The middle rotating shaft 1404 is arranged on the ear plate 1400 of the fixed seat 14, and the transfer kit 1401 is sleeved on the middle rotating shaft 1404 with a clearance fit and can rotate smoothly without jamming under the push of the opening drive mechanism 7. Then, the friction plates 1409, the water broom, and the friction plates 1409 are sleeved on the transfer kit 1401 in sequence, and then limited and fixed by the baffle 14010 to prevent the water broom from jumping up and down during work. The water broom limit block 1403 is arranged on the transfer kit 1401, and the water broom is limited and leaned against the water broom limit block 1403 by the tension of the spring 1402. The main function of the spring 1402 is to tighten the water broom and prevent the water broom from rotating backward under the action of water pressure, which affects cleaning. When the water broom collides with an obstacle, the spring 1402 plays a role to ensure that the water broom is not damaged.

[0068] Please refer to Figure 7 , in an embodiment, the water guide rod 5 is provided with nozzles, and the spray heads are arranged at the nozzles. There are three spray heads on the water broom, and the three spray heads are arranged in sequence along the length direction of the water guide rod 5. From the direction close to and away from the opening drive mechanism 7, they are the first spray head, the second spray head, and the third spray head in sequence. The first spray head is arranged perpendicular to the water guide rod 5, and the second spray head and the third spray head are designed at angles of acute angles α and β respectively, and α≤β in terms of structure. Further, the included angle between the nozzle and the vertical direction is not less than 35 degrees and not more than 45 degrees. Please refer to Figure 9 , 35°≤γ≤45°, so that the core of the spray head rotates to eject a conical hollow water ring with a cone angle and the overlap amount of two conical hollow water rings is 5%-10%.

[0069] Please refer to Figure 7 , in a further embodiment, the end of the water guide rod away from the opening drive mechanism is bent upward and is provided with an end nozzle 500, and the end nozzle 500 is arranged perpendicular to the bent end of the water guide rod.

[0070] Since when the water broom sprays high-pressure water, the high-pressure water reacts on the ground and makes the impurities on the ground bounce back. Therefore, in a further embodiment, the side spray water driving mechanism further includes a mudguard 15 and a mudguard connecting rod 16; the mudguard 15 is connected to the extended cleaning mechanism through the mudguard connecting rod, and the mudguard 15 is vertically located outside the front end of the extended cleaning mechanism and is used to block the impurities splashed back by the water broom spray. When it is necessary to clean the road edge and the curb, the mudguard 15 can be fixed by using a screw with an arm through the mudguard connecting rod 16, and it can be removed when the water broom is not working.

[0071] In a further embodiment for further cleaning operations, it further includes a quick cleaning spray bar 17. The quick cleaning spray bar 17 is provided with at least two nozzles 1700, and each nozzle 1700 is arranged in sequence along the length direction of the quick cleaning spray bar 17. The quick cleaning spray bar 17 is arranged at the front end of the main cleaning mechanism, and the nozzles 1700 face the gap between the main cleaning mechanism and the bottom surface. The sewage and other contaminants sprayed by the quick cleaning spray bar 17 are reflected and splashed under the suction port 400 of the suction mechanism 4. Since the cleaning device moves forward at a certain speed, the sewage and other contaminants are strongly sucked into the sewage tank of the cleaning vehicle at the suction port 400.

[0072] The lower half of the side end of the cover 100 is designed to be inclined inward. After installing the polyurethane or rubber strip 20 made of wear-resistant material for sealing, reducing the suction gap and increasing the suction force, during the operation process, the friction between the polyurethane or rubber and the ground can be reduced, and its service life can be extended. Polyurethane or rubber strips are installed around the base 1 to seal the inner cavity of the base 1 and increase its suction force, so that the suction mechanism 4 can better complete the complete suction of the ground moisture.

[0073] The working principle of the road cleaning device installed on the cleaning vehicle is as follows:

[0074] When the cleaning vehicle is not started and in a parked state, the road cleaning device is lifted and suspended under the chassis. The air supply of the lifting drive mechanism 12 is cut off, and the piston rod extends under the action of the spring force and the force of the extended cleaning mechanism itself, showing a slightly downward inclined shape. The piston rod of the expansion drive mechanism 8 is in a contracted state, and the extended cleaning mechanism is flush with the main cleaning mechanism. The opening drive mechanism 7 on the side spray water driving mechanism extends, and the water broom is parallel to the driving direction of the cleaning vehicle, as shown in the state of the side spray water driving mechanism on the right side in the figure. Figure 3 As shown in the state of the side spray water driving mechanism on the right side in the figure.

[0075] When the cleaning vehicle starts, stops, or is in a non-operating driving state, the lifting drive mechanism 12 is ventilated, and the lifting drive mechanism 12 contracts. The extended cleaning mechanism tilts upward (inclines), ensuring that the extended cleaning mechanism does not affect the uphill or downhill driving of the vehicle within the maximum allowable limit. The piston rod of the expansion drive mechanism 8 is in a contracted state, and the extended cleaning mechanism is flush with the main cleaning mechanism. The opening drive mechanism 7 on the side spray water driving mechanism remains extended in the ventilated state, and the water broom is parallel to the driving direction of the vehicle, as shown in the state of the side spray water driving mechanism on the right side in the figure. Figure 3 As shown in the state of the side spray water driving mechanism on the right side in the figure.

[0076] When cleaning operations are required, the road cleaning device lands. If cleaning a relatively narrow road, only the main cleaning mechanism is required to complete the cleaning task. The lifting drive mechanism 12 remains ventilated, the piston rod contracts, the extended cleaning mechanism tilts upward and does not contact the ground, and the water broom is in a non-working state (as shown in the figure).Figure 3 The side spray water-driving mechanism shown on the right side is in the state, and the sweeper moves forward to clean. For areas where debris, mud or dirt has a strong adhesion to the ground and is difficult to clean, or when the road surface is dusty and needs deep cleaning, high-pressure water can be input into the rotating spray rod mechanism. Under the action of high-pressure water, the rotating nozzle 300 on the rotating spray rod 3 sprays a fan-shaped water curtain. Since the two nozzles on the rotating spray rod 3 are installed at a certain angle, the rotating spray rod 3 rotates at a high speed under the reaction force of the high-pressure spray, and the sprayed water curtain continuously impacts the cleaning ground. During the cleaning process, the fan is always in a working state to strongly suck out sewage and other dirt from the ground, so that the cleaned ground is always kept clean and free of water traces. The original road color (the operating speed is determined by the road conditions and maintained within 5Km / h for cleaning). After cleaning and suction, stop inputting high-pressure water to the rotating spray rod 3; after completing a deep cleaning of the road surface, since the pollutants in the gaps in the road surface have been basically removed, when the residual dust on the road surface exceeds the standard and has no adhesion to the ground, it is easy to raise dust. At this time, a second or subsequent three or four cleanings are required. Input high-pressure water to the fast cleaning spray rod 17, and the nozzle on the fast cleaning spray rod 17 sprays a fan-shaped water curtain to wash the ground. The two adjacent water curtains are guaranteed to have overlapping parts to ensure that they are fully cleaned (the operating speed is above 5Km / h).

[0077] Taking the expansion drive mechanism 8 as an example of an oil cylinder, when it is necessary to clean the road to suit the width of the road and to partially widen the cleaning width, the lifting drive mechanism 12 is de-energized, and the piston rod is extended under the action of the spring in the lifting drive mechanism 12 and the gravity of the expansion cleaning mechanism. The expansion cleaning mechanism can fluctuate freely with the unevenness of the ground under the connection of the guide sleeve 10 and the guide rod 11, ensuring that the expansion cleaning mechanism can be close to the ground when the ground is uneven, thereby ensuring a good cleaning effect. The width of the cleaned road surface is adjusted online by controlling the extension amount of the output shaft of the expansion drive mechanism 8 (oil cylinder).

[0078] When cleaning the curbstones and roadsides, drive and open the drive mechanism 7 to drive the water broom to rotate and extend out of the extended cleaning mechanism, manually install the mud guard 15 (the mud guard 15 is used to block the dirt and other impurities splashed back by the side spray water-repelling mechanism to prevent them from splashing onto the vehicle body), input high-pressure water to the water broom, and the end nozzle 500 on the water broom will spray a fan-shaped water curtain under the action of high-pressure water to clean the upper and side surfaces of the curbstones. Under the action of high-pressure water, the inner core of the nozzle will rotate and spray a conical hollow water ring to act on the road surface. Under the impact and flushing of the high-pressure sprayed water ring on the ground, the dust, dirt, silt and other pollutants on the road surface and the white solid line on the road surface will be thoroughly removed, restoring the original color of the road and the white solid line. Figure 7The water broom forms a certain angle with the curb, so that the sewage sprayed and cleaned by the water broom during walking will be driven under the base 1 and sucked away. When encountering a sewer, part of the sewage will be driven into the sewer, and there will be no sewage belt or mud residue left on the cleaned road surface. When cleaning the side road surface without a curb, the end nozzle 500 of the water broom also plays a role in cleaning the road surface, increasing the width of the roadside cleaning.

[0079] It should be noted that although the above embodiments have been described in this article, the patent protection scope of the present invention is not limited thereby. Therefore, based on the innovative concept of the present invention, any changes and modifications made to the embodiments described in this article, or equivalent structural or equivalent process transformations made using the content of the specification and drawings of the present invention, and directly or indirectly applying the above technical solutions to other related technical fields, are all included in the patent protection scope of the present invention.

Claims

1. A road cleaning device, characterized in that, it includes a main cleaning mechanism, a suction mechanism, two extended cleaning mechanisms, and two extended driving mechanisms; both the main cleaning mechanism and the extended cleaning mechanism include a base and a rotating spray rod mechanism; the rotating spray rod mechanism includes a rotating joint and a rotating spray rod, and rotating nozzles are arranged at both ends of the rotating spray rod; the rotating spray rod is arranged below the base, and the middle part of the rotating spray rod is connected to the base through the rotating joint, and the rotating nozzles are all inclined downward and are arranged in a crosswise manner; the suction mechanism is arranged at the rear end of the base of the main cleaning mechanism, and the suction port of the suction mechanism is rectangular and flat and is arranged facing the ground; the two extended driving mechanisms are arranged on both sides of the rear end of the base of the main cleaning mechanism, and the two extended cleaning mechanisms are respectively connected to the two extended driving mechanisms and can be moved outside the side end of the base of the main cleaning mechanism under the drive of the extended driving mechanisms; the extended cleaning mechanism is further provided with a side spray water driving mechanism, and the side spray water driving mechanism includes a water broom and an opening driving mechanism, and the water broom includes a water guiding rod and a nozzle, and the nozzle is arranged at the water guiding rod and is communicated with the water guiding rod; the water guiding rod is hinged to the extended cleaning mechanism, and the opening driving mechanism is respectively hinged to the extended cleaning mechanism and the water guiding rod and is used for driving the water guiding rod to turn outside the side end of the extended cleaning mechanism; the extended driving mechanism is a cylinder, an oil cylinder or a linear motor; it further includes two lifting driving mechanisms and two guide sleeves; the two guide sleeves are respectively fixedly arranged on both sides of both ends of the base of the main cleaning mechanism; the extended cleaning mechanism is provided with a guide rod, and the guide rod passes through the guide sleeve and can rotate relative to the guide sleeve; the bodies of the two extended driving mechanisms are both connected to the base of the main cleaning mechanism, and the output shafts of the two extended driving mechanisms are respectively connected to the two guide rods through ball joints; the two lifting driving mechanisms are both hinged to the main cleaning mechanism and are respectively hinged to the two extended cleaning mechanisms and are used for lifting the extended cleaning mechanisms; it further includes a fast cleaning spray rod, and the fast cleaning spray rod is provided with at least two nozzles, and the nozzles are arranged in sequence along the length direction of the fast cleaning spray rod; the fast cleaning spray rod is arranged at the front end of the main cleaning mechanism, and the nozzles face the gap between the main cleaning mechanism and the bottom surface.

2. The road cleaning device according to claim 1, characterized in that, the lifting driving mechanism is a single-acting cylinder.

3. The road cleaning device according to claim 2, characterized in that, the extended cleaning mechanism is provided with a connecting rod, the body of the lifting driving mechanism is hinged to the main cleaning mechanism, and the output shaft of the lifting driving mechanism can movably pass through the connecting rod along the connecting rod.

4. The road cleaning device according to claim 1, characterized in that, The opening driving mechanism is a cylinder, and further includes a fixed seat and a spring. The fixed seat stands on the extended cleaning mechanism, and the fixed seat is provided with ear plates. The ear plates are fixed with a middle rotating shaft, and the middle rotating shaft is hinged with a middle rotating kit; the water guide rod is hinged at one end of the middle rotating kit, the output shaft of the opening driving mechanism is hinged at the other end of the middle rotating kit, and the body of the opening driving mechanism is hinged at the fixed seat; both ends of the spring are respectively connected with the water guide rod and the middle rotating kit to limit the opening angle of the water guide rod relative to the middle rotating kit.

5. The road cleaning device according to claim 1, characterized in that the side spray water driving-away mechanism further includes a mudguard and a mudguard connecting rod; the mudguard is connected to the extended cleaning mechanism through the mud connecting rod, and the mudguard is vertically located outside the front end of the extended cleaning mechanism and is used for shielding impurities splashed back by the water broom spray.

6. The road cleaning device according to claim 1, characterized in that the rotating spray rod mechanism further includes a dust shielding disc and at least two lifting seats; at least two horizontally arranged disc mounting frames are connected to the circumference of the dust shielding disc, the dust shielding disc is suspended directly below the rotary joint, the lifting seats are vertically connected under the base and are connected with the disc mounting frames; the rotating spray rod is located between the base and the dust shielding disc.

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