JP2004293131A - Refuse truck - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a refuse truck capable of efficiently discharging dust from a hopper. <P>SOLUTION: In the refuse truck 1, water blown against a road face by a cleaning unit 4 and dust on the road face are collected into a collecting chamber of a hopper 6. A moving part 8 moving the hopper 6 to the rear side of a vehicle base 2, keeping the bottom face of the hopper 6 parallel, is provided in the refuse truck 1. The bottom face of the hopper 6 is constituted so as to incline from the side face of the hopper 6 toward the discharge opening 90 formed in the central part. By the refuse truck 1 with such a constitution, dust collected in the hopper 6 can be efficiently discharged from the discharge opening 90. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a cleaning vehicle, and is particularly suitable for cleaning a road surface of a permeable pavement.
[0002]
[Prior art]
2. Description of the Related Art A conventional cleaning vehicle for cleaning an object to be cleaned such as a road surface sprays water on the object to be cleaned, and collects dust of the object to be cleaned together with the sprinkled water in a hopper provided on a chassis. The hopper has a discharge port on a side and a door closing the discharge port. The hopper is supported by a cylinder provided on a chassis, and the side having the discharge port is tilted downward by driving the cylinder. This cleaning vehicle can discharge the dust collected in the hopper by opening the door in a state where the discharge port is inclined downward.
[0003]
[Patent Document 1]
Japanese Patent Application No. 2001-73331
[Problems to be solved by the invention]
In the hopper of the above-mentioned cleaning car, dust is deposited, and a layer is formed such that water covers the upper part of the dust. However, since the hopper is inclined to discharge the dust, the dust and water in the hopper are simultaneously discharged from the discharge port. Therefore, this cleaning car has a problem that dust cannot be efficiently discharged from the hopper.
[0005]
The present invention has been made to solve the above problems, and has as its object to provide a cleaning vehicle that can efficiently discharge dust from a hopper.
[0006]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, a cleaning car of the present invention is collected by a chassis, a cleaning unit that sprinkles water on an object to be cleaned, and collects dust of the object to be cleaned together with water sprinkled on the object to be cleaned, and a cleaning unit. A collection chamber in which water and dust are stored via a duct, a discharge port provided on the bottom surface of the collection chamber, and a lid for closing the discharge port, a hopper provided on the chassis, and a chassis on the bottom surface of the hopper. Moving means for moving the hopper out of the chassis while maintaining the inclination.
[0007]
According to the cleaning truck having such a configuration, the hopper is moved to the outside of the chassis while maintaining the inclination with respect to the chassis by the moving means. Therefore, the water and the dust collected in the hopper do not disturb the layer structure in which the water covers the upper part of the dust. Further, since the hopper has a discharge port on the bottom surface, dust can be discharged from the discharge port before water. Further, the dust remaining in the hopper can be washed out with the water stored in the collection chamber.
[0008]
In the cleaning truck according to the present invention, the moving means includes a parallel link having an arm supported at one end by the chassis and an arm supported at the other end by the hopper, and a drive for moving the hopper to the outside of the chassis. A drive unit for applying a force to the arm.
[0009]
Further, in the cleaning truck of the present invention, the hopper has a side surface that is continuous from the peripheral edge of the bottom surface and covers a side of the collection chamber, and the discharge port is provided inward from the peripheral edge of the bottom surface. Is preferably characterized in that the bottom surface of the is inclined downward from the side wall toward the discharge port.
[0010]
In the cleaning truck having such a configuration, since the bottom surface of the hopper has a shape inclined downward toward the discharge port, dust collected by the hopper is more efficiently discharged from the discharge port.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
A cleaning truck 1 according to an embodiment of the present invention will be described with reference to the accompanying drawings. In the following description of the embodiments, to facilitate understanding of the description, the same or corresponding portions are denoted by the same reference numerals in each drawing.
[0012]
FIG. 1 is a side view of the cleaning vehicle 1. Hereinafter, of the words indicating directions used in this specification, “up and down” is based on the state shown in FIG. That is, the road surface is set downward with respect to the cleaning truck. Further, “front and rear” refers to the state shown in FIG.
[0013]
The cleaning vehicle 1 includes a chassis 2, a cleaning unit 4 attached to a bottom surface of the chassis 2, a hopper 6 provided on the chassis 2, a moving unit 8 for moving the hopper 6 to the rear of the chassis 2, and a cleaning unit. A container 10 in which various devices for supplying water and air to the unit 4 are accommodated.
[0014]
The cleaning unit 4 sprays water and air on the road surface (the object to be cleaned), and collects dust on the road surface together with the water and air blown on the road surface. FIG. 2A is a side view of the cleaning unit 4. FIG. 2B is a plan view of the cleaning unit 4 and shows the cleaning unit 4 as viewed from above. The cleaning unit 4 includes a plurality of watering nozzles 12, a plurality of air nozzles 14, six suction nozzles 16, and a cover that covers the watering nozzles 12, the air nozzles 14, and the suction nozzles 16 and that is opened toward the road surface. 18. In the cleaning unit 4, a plurality of watering nozzles 12, a plurality of air nozzles 14, and six suction nozzles 16 are arranged in the width direction of the cleaning car 1.
[0015]
The watering nozzle 12 has a nozzle hole directed to a road surface below the suction nozzle 16. The watering nozzle 12 is connected to a pipe 19 extending in the width direction of the cleaning car 1, and sprays water supplied via the pipe 19 onto a road surface (the object to be cleaned). The air nozzle 14 has a nozzle hole directed to a road surface below the suction nozzle 16. The air nozzle 14 is connected to a pipe 21 extending in the width direction of the cleaning car 1, and blows air supplied from a high-pressure air discharge pipe 22 connected to the pipe 21 to a road surface. The suction nozzle 16 has a cone shape spreading toward the road surface. The suction nozzle 16 is connected to the pipe 24, and sucks the water sprayed on the road surface from the watering nozzle 12 and the air blown on the road surface from the air nozzle 14 to collect dust on the road surface and collects the dust in the hopper 6.
[0016]
FIG. 3 is a diagram schematically showing a piping system of the cleaning car 1. Water is supplied to a pipe 19 to which the watering nozzle 12 is connected via a pipe 20 from a water tank 26 housed in the container 10. A pump 30 driven by a driving device 28 is connected to the pipe 20, and the pump 30 supplies the water stored in the water tank 26 to the pipe 20 via a filter 32 that removes foreign matter. Further, the water tank 26 is connected to the hopper 6 via a pipe 34 and a pump 36. The water collected in the collection chamber 38 of the hopper 6 is sucked by the pump 36 and supplied to the water tank 26. That is, the water sprayed on the road surface by the watering nozzle 12 is collected by the suction nozzle 16 and recycled as the water sprayed by the watering nozzle 12 on the road surface.
[0017]
The air sucked by the suction nozzle 16 and collected in the collection chamber 38 of the hopper 6 is circulated and supplied to the air nozzle 14. The air nozzle 14 is connected to the hopper 6 via a pipe 21, a pipe 22 for discharging high-pressure air, a blower 40 and a pipe 42 housed in the container 10, and a pipe 44. The blower 40 is driven by a driving device 46 to circulate air between the suction nozzle 16 and the air nozzle 14.
[0018]
FIG. 4 is a diagram showing the cleaning unit 4 viewed from behind the cleaning car 1. FIG. 5 is a side view showing the cleaning unit 4 together with the undercarriage 2, and is a partially cutaway view of a support 50 supporting the cleaning unit 4. One end of the support 50 is attached to each of the four corners of the surface facing the chassis 2 of the cleaning unit 4. The support unit 50 includes a cylinder 51 that moves the cleaning unit 4 in the vertical direction, an inner cylinder 52 whose lower end is fixed to the cleaning unit 4 and covers the side circumference of the cylinder 51, and an outer cylinder 53 that covers the side circumference of the inner cylinder. And The lower end of the cylinder 51 is fixed to the inner cylinder 52, and the upper end of the cylinder 51 is fixed to the outer cylinder 53. The cylinder 51 moves the cleaning unit 4 downward so as to keep the distance between the cleaning unit 4 and the road surface constant according to the lifting of the vehicle body of the cleaning vehicle 1. In the cleaning car 1, for example, in order to move the cleaning unit 4 downward according to a decrease in the amount of water in the water tank 26, a timer for measuring the driving time of the driving device 28 is provided, and the driving time measured by the timer is provided. , The cylinder 51 can be controlled so as to move the cleaning unit 4 downward.
[0019]
A roller 54 is provided on a side surface of the outer cylinder 53 so as to be rotatable around an axis extending along the traveling direction of the cleaning wheel 1. The roller 54 is connected to a roller guide 55 extending in the width direction of the cleaning wheel 1. Supported. One end of the roller guide 55 is fixed to the chassis 2, and the other end of the roller guide 55 is fixed to a chassis frame 57 fixed to the chassis 2 via a mounting frame 56.
[0020]
Also, on the side surface of the outer cylinder 53, there are a pipe 58 for connecting the support parts 50 arranged in the width direction of the cleaning car 1 and a pipe 59 for connecting the support parts 50 arranged in the traveling direction of the cleaning car 1. The ends are fixed. One end (end of the rod) of the cylinder 60 is fixed to the center of the pipe 59 in the longitudinal direction via a bracket 61. The other end of the cylinder 60 is fixed to the chassis frame 57. The roller 54 moves along the roller guide 55 when the cylinder 60 expands and contracts in the width direction of the cleaning wheel 1 to apply a driving force to the pipe 59. With the movement of the roller 54, the cleaning unit 4 supported by the support unit 50 is swung in the width direction of the cleaning vehicle 1. Therefore, the cleaning unit 4 can clean the road surface while swinging in the width direction of the cleaning vehicle 1.
[0021]
FIG. 6 is an enlarged side view showing the hopper 6 and the moving unit 8. FIG. 7 is a diagram illustrating the hopper 6 and the moving unit 8 as viewed from the front of the cleaning vehicle 1. The moving section 8 has a parallel link formed by the first arm 70 and the second arm 72, and a cylinder 74 that provides a driving force for moving the hopper 6 to the rear of the chassis 2. The first arm 70, the second arm 72, and the cylinder 74 are provided in a pair each along the side surface of the hopper 6 that crosses the width direction of the cleaning car 1.
[0022]
One end of the first arm 70 is pivotally supported by a bracket 76 fixed to the chassis 2, and the other end is pivotally supported by a bracket 78 fixed to the hopper 6. One end of the second arm 72 is supported by a bracket 80 fixed to the chassis 2 at a predetermined distance from the bracket 78, and the other end is supported by the bracket 78 provided on the hopper 6. Have been. The distance between the position where the other end of the first arm 70 is supported by the bracket 78 and the position where the other end of the second arm 72 is supported by the bracket 78 is the distance between the bracket 76 and the bracket 80. Substantially equal.
[0023]
At the center in the longitudinal direction of the second arm 72, the other end of a cylinder 74 whose one end is supported by a bracket 82 provided on the chassis 2 is supported. A boom 84 is attached to the pair of second arms 72 for connecting the centers in the longitudinal direction. In the moving unit 8 having such a configuration, by extending the cylinder 74, the second arm 72 rotates around the bracket 80 as a fulcrum, and the first arm 70 pivots about the bracket 76 as the second arm 72 rotates. Rotate. Since the first arm 70 and the second arm 72 rotate while keeping parallel, the hopper 6 supported by the other end of the first arm 70 and the other end of the second arm 72 via the bracket 78 is It is moved to the rear of the chassis 2 while maintaining the inclination between the bottom surface and the chassis 2.
[0024]
A pipe 44 is provided on an upper side surface of the hopper 6, and a flange is provided at a tip of the pipe 44. Further, a pipe 42 extending from the upper side surface of the container 10 is also provided with a flange. When the hopper 6 is disposed on the chassis 2, the pipe 42 and the pipe 44 are connected by the flange of the pipe 42 and the flange of the pipe 44 being in close contact with each other via the packing. Since air is circulated in the piping system including the piping 42 and the piping 44 by the blower 40, the piping system is maintained at a negative pressure. Therefore, the flange of the pipe 42 and the flange of the pipe 44 are firmly adhered.
[0025]
The hopper 6 is provided with a discharge port 90 for discharging dust and water accumulated in the collection chamber 38 at the center of the bottom surface 100 thereof. The bottom surface 100 that forms the bottom of the collection chamber 38 of the hopper 6 is inclined downward from the side surface of the hopper 6 toward the discharge port 90. Further, the hopper 6 is provided with a lid 92 that is rotatable around one edge of the discharge port 90, and the lid 92 closes the discharge port 90. One end of an arm 94 is pivotally supported by the lid 92, and the other end of the arm 94 is pivotally supported by a link 96 which is pivotally supported on the lower side surface of the hopper 6. The other end of the cylinder 98 whose one end is pivotally supported on the side surface of the hopper 6 is pivotally supported by the link 96.
[0026]
When the cylinder 98 is extended, the link 96 is rotated downward, and the arm 94 rotates the lid 92 upward with the downward rotation of the link 96. Therefore, when the hopper 6 is disposed on the chassis 2, the cover 92 can close the discharge port 90 by extending the cylinder 98. On the other hand, the cylinder 98 is contracted, the link 96 is rotated upward, and the arm 94 rotates the lid 92 downward with the upward rotation of the link 96. Therefore, when the hopper 6 is arranged behind the chassis 2, the lid 92 can open the discharge port 90 by contracting the cylinder 98. When the discharge port 90 is opened, the dust and water accumulated in the collection chamber 38 are discharged from the discharge port 90, and the dust discharged from the discharge port 90 is transferred to, for example, a transport vehicle for collecting the dust. .
[0027]
Hereinafter, the operation of the cleaning vehicle 1 according to the present embodiment will be described. In the collection chamber 38 of the hopper 6, the dust and water form a layer so that the precipitated dust is covered with water from above. The moving unit 8 of the cleaning car 1 can move the hopper 6 to the rear of the chassis 2 while maintaining the inclination of the bottom surface of the hopper 6 with respect to the chassis 2, so that the hopper 6 can be moved without breaking the above layer structure. It can be moved behind the chassis 2.
[0028]
After moving the hopper 6 to the rear of the chassis 2, the lid 92 is opened to release the discharge port 90, and the dust settled at the bottom of the collection chamber 38 is discharged before the water collected in the collection chamber 38. 90, followed by water. Therefore, dust can be discharged by the pressure of the water stored in the collecting chamber 38, and after the dust is discharged, the dust remaining in the collecting chamber 38 by the water collected in the collecting chamber 38 is discharged. 90 can be washed out. As described above, in the cleaning vehicle 1, the dust collected in the hopper 6 can be efficiently discharged from the discharge port 90.
[0029]
Further, the bottom surface 100 of the hopper 6 has a shape that is inclined downward toward a discharge port 90 provided at the center thereof, so that the dust collected in the hopper 6 is easily discharged.
[0030]
Note that the present invention is not limited to the above-described embodiment, and various modifications can be made. For example, the moving unit 8 is not limited to a mechanism having a parallel link. For example, a rail for moving the hopper 6 to the rear of the chassis 2 may be provided on the chassis 2, and the hopper 6 may be moved to the rear of the chassis 2 along the rail.
[0031]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, the cleaning vehicle which can discharge dust efficiently from a hopper is provided. Therefore, the operation of cleaning an object to be cleaned such as a road surface is reduced.
[Brief description of the drawings]
FIG. 1 is a side view of a cleaning vehicle according to an embodiment.
FIG. 2A is a side view of a cleaning unit.
FIG. 2B is a plan view of the cleaning unit, and shows the cleaning unit viewed from above.
FIG. 3 is a diagram schematically illustrating a piping system of the cleaning vehicle according to the embodiment.
FIG. 4 is a diagram illustrating the cleaning unit viewed from behind the cleaning vehicle according to the embodiment;
FIG. 5 is a side view showing the cleaning unit together with the chassis, and is a diagram showing a support portion for supporting the cleaning unit, partially cut away.
FIG. 6 is an enlarged side view showing a hopper and a moving unit.
FIG. 7 is a diagram illustrating a hopper and a moving unit when viewed from the front of the cleaning vehicle according to the embodiment;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Cleaning truck, 2 ... Car chassis, 4 ... Cleaning unit, 6 ... Hopper, 8 ... Moving part, 10 ... Container, 12 ... Watering nozzle, 14 ... Air nozzle, 16 ... Suction nozzle, 26 ... Water tank, 90 ... Discharge port , 100 ... Bottom (hopper).

Claims (3)

Chassis and
A cleaning unit that sprinkles water on the object to be cleaned and collects dust on the object to be cleaned together with water sprinkled on the object to be cleaned;
A collection chamber in which water and dust collected by the cleaning unit are accommodated via a duct, a discharge port provided on a bottom surface of the collection chamber, and a lid for closing the discharge port; Hopper and
A moving unit that moves the hopper out of the chassis while maintaining the inclination of the bottom surface of the hopper with respect to the chassis. The moving means,
A parallel link having one end pivotally supported by the chassis and an arm pivotally supported by the hopper at the other end;
The cleaning unit according to claim 1, further comprising: a driving unit that applies a driving force to the arm to move the hopper out of the chassis. The hopper,
A side surface that is continuous from a periphery of the bottom surface and covers a side of the collection chamber;
The discharge port is provided inward from a peripheral edge of the bottom surface,
The cleaning vehicle according to claim 1, wherein the bottom surface is inclined downward from the side wall toward the discharge port.

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