JPH0649965B2 - Cleaning car - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a so-called lift dump type cleaning vehicle in which a hopper is lifted from a dust storage position and the lifted hopper is inclined to discharge the dust.

2. Description of the Related Art Conventional Techniques and Problems When a hopper that stores dust is full during road surface cleaning, it is well known to transfer this dust to a dust carrier. However, the conventional cleaning car hopper is
A rear dump system is provided in the rear part of the hopper arranged at the rear end of the vehicle body to provide a discharge port and an opening / closing door for opening and closing the discharge port. At that time, the carrier had to be turned backward, and the rear part of the loading platform had to be brought close to the rear part of the cleaning vehicle to stop. Therefore, the carrier had to make a U-turn to move the vehicle in the opposite direction to the traveling direction, move the bag closer to the cleaning vehicle with the back, and make a U-turn again after the work to perform the work. Therefore, in the conventional cleaning car, not only the workability is extremely poor, but also the road is occupied over a wide range when making a U-turn, so traffic control is required on the highway, and traffic congestion or accidents occur. There was a problem that could be the cause of.

Means for Solving Problems The present invention is intended to provide a simple cleaning vehicle that solves the above-mentioned conventional problems, and has a receiving port of a hopper that receives dust from the dust collecting and storing means at a dust storing position. It is provided on the rear side to serve as a dust outlet, and on the vehicle body, a hopper that can lift the hopper from the dust storage position to a position above the cabin and that can rotate the hopper so that the outlet is directed upwards and the cabin upper part The hopper at the position is characterized by disposing dumping means capable of rotating such that the discharge port is directed forward and downward.

EXAMPLES Next, the present application will be described in detail with reference to the drawings illustrating examples. In FIG. 1, reference numeral 1 is a cleaning vehicle, on the body 2 of which the following is mounted as a main part of this embodiment. Reference numeral 3 is a cabin, 4 is a hopper, 5 is a working drive unit, 6 is a lifting means, 7 is a dumping means, and 8 is a dust collecting and storing means, which will be described below in order.

First, the hopper 4 is disposed in the space between the cabin 3 at the front end of the vehicle body 2 and the working drive unit 5 at the rearmost end, that is, substantially in the middle of the vehicle body 2. The hopper 4 is hung on the second lifting arm 19 by pivotally supporting a hanging arm 9 attached to a side wall of the hopper 4 on a second lifting arm 19 of a lifting means 6 described later. Is installed in this way. The hopper 4 has a first
At the dust storing position shown in the figure, a dust receiving port 10 that opens rearward is provided in the rear portion, and this receiving port 10 constitutes a dust discharging port (hereinafter referred to as the discharging port 10). The discharge port is provided over the range from point P to point P1. Reference numeral 11 denotes a sub hopper provided in the hopper 4, which is a partition plate 12 mounted between both side walls of the hopper 4 and a rubber curtain 13 for releasably closing a lower opening formed by the partition plate 12 and the hopper wall. And an opening portion 14 is provided in the upper portion so as to face the discharge port 10 and open.

Next, the hopper 4 is lifted from the dust storage position shown in FIG. 1 to the cabin upper position shown in FIG. 2, and the hopper 4 is rotated to the position shown by an imaginary line 4a in the lifting position. The dumping means 7 for dumping will be described. Both the means 6 and 7 are the hopper 4.
Although it is attached to both sides of FIG. 3, only one side thereof is shown in FIG. Reference numeral 13 denotes a mounting shaft made of a cylindrical pipe, which penetrates the subframe 15a mounted on the main frame 15 by an appropriate mounting means (not shown) and extends to both sides of the vehicle body 2. 6 and 7 are attached. Reference numeral 16 denotes a mounting board, which has pivotally supporting pieces 16a and 16b projecting obliquely downward, and two of them are mounted on the shaft end of the mounting shaft 13 with a predetermined interval. Pivot piece 16
Two first lifting arms 17, which are slightly curved upward, are pivotally attached to the inside of the a, and a first lifting cylinder 18 is provided between the first lifting arm 17 and the pivot support piece 16b. Is provided. Reference numeral 19 is a second lifting arm, which is pivotally mounted between the first lifting arms 17 coaxially therewith, and the hopper 4 is suspended at the end opposite to the pivot 20 as described above. The second lifting arm 19 is formed in a rectangular prism shape and is bent in an inverted V shape in the drawing, and this bending allows a rotation center, that is, a pivot fulcrum 20 when the hopper 4 is lifted. It is possible to lower the maximum lifting height of the hopper 4 by making it a relatively low position. Reference numeral 21 denotes a second lifting cylinder, which is mounted between the end of the first lifting arm 17 on the opposite side of the pivot 20 and the second lifting arm 19.

The dumping means 7 includes the second lifting arm 19 and
It is composed of a suspension arm 9 and a dump cylinder 23 mounted between these arms 19 and 9. The suspending arm 9 and the second lifting arm 19 also serve as constituent members of both the lifting means 6 and the dumping means 7, and the dump cylinder 23 holds the position of the suspended hopper 4. Also doing.

Next, the working drive section 5 and the dust collecting and storing means 8 will be described, but since these are not the gist of the present application, only the outline will be described.

The work drive unit 5 is equipped with a normal engine such as gasoline or diesel, and is attached to the rearmost portion of the vehicle body 2. The dust collection and storage means 8 and the like described below are cleaned by an appropriate transmission mechanism (not shown). Power is transmitted to the drive part for work.

The dust collecting and storing means 8 is roughly divided into a blower section 24 and a cleaning section 25, and they are as follows, respectively. Blower section 24
Is a blower 26 attached to the vehicle body 2 on the right side of the hopper 4 by an appropriate means, and a suction cylinder 27 protruding from the blower 26 and having a length substantially equal to the width of the discharge port 10 provided in the hopper 4. And the partition wall 2 which is curved so as to cover substantially half of the rear side (the rear side of the vehicle body) of the suction cylinder 27.
9 and a hood 28 composed of side plates 30 attached to both sides of the partition wall 29. Reference numeral 31 is a suction duct formed between the hood and the suction cylinder 27, and a filter 32 is attached to the inlet thereof. 33
Is an air vent hole that communicates the suction duct 31 with the inside of the suction cylinder 27, which is formed over the entire length of the suction cylinder 27, and 34 is an air leak hole which is formed over the entire length of the suction cylinder 27 as described above. Is. Thus, when the hopper 4 is at the dust storage position shown in FIG. 1, a part of the suction cylinder 27 of the blower 26 faces the discharge port 10, and the upper end of the hood 29 is at the point P of the hopper 4. Further, the lower edge of the air leak hole 34 is pressed against the point P1 to close the discharge port 10, and the air leak hole 34
The upper edge of the above is pressed against the above-mentioned sub hopper 11 at the point P2, and the opening 14 and the air leak hole 34 are aligned with each other. Finally, 35 is a drive shaft that penetrates the inside of the suction cylinder 27 and blower 2
6, the blade (not shown) is rotated by the rotation of the working drive unit 5.

The cleaning unit 25 is usually provided on the left side of the vehicle body 2 and is attached to both sides only in the case of a special specification vehicle. The cleaning unit 25 is configured as follows, but is not limited to this. The cleaning unit 8 includes a cleaning brush 36 and a cleaning chamber 37 that accommodates the cleaning brush 36. The cleaning chamber 37 has rubber curtains 39 attached to the four circumferences of a top plate 38 to form a box without a bottom plate, and a partition plate 40. The inside of the cleaning chamber 37 is obliquely divided into an air supply chamber 41 and an air supply chamber 42. The cleaning chamber 37 configured as described above is attached to the support arm 47 by the hollow suspension shaft 43 having the through hole 44 formed therein, and thus the support arm 47 is different from the case of a conventionally known gutter brush. Similarly, the cleaning chamber 37 is swingable between a working position shown by a solid line in FIG. 3 and a standby position shown by an imaginary line 37a, and can be lifted from the road surface 46 at the standby position. . Reference numeral 47A in the drawing denotes the swinging mechanism and the lifting mechanism, although detailed description thereof is omitted. The cleaning brush 36 has a rotating shaft 48 attached to its upper surface.
Is rotatably supported by the suspension shaft 43 by being inserted into the through hole 44 of the suspension shaft 43, and the rotation shaft 48 is connected to the motor 49.

Finally, 50 is an air supply pipe, and 51 is an intake pipe, each of which has flexibility. One end of the intake pipe 50 is attached to the blowout port 52 of the blower 26 via a connecting pipe 53, and the other side thereof. The end of is opened to the air supply chamber of the cleaning chamber 37. It should be noted that the connecting pipe 53 is provided with a switching valve for switching the air flow to the left or right cleaning chamber 37 as appropriate according to the working situation when the cleaning chambers 37 are attached to both sides of the vehicle body 2 according to a special specification. , Illustration and description are omitted. The intake pipe 51 is composed of an upper suction pipe 51a that opens to the hopper and a lower suction pipe 51b that opens to the intake chamber 42 of the cleaning chamber 37.
Is detachably connected.

Next, the operation of the present application will be described. Prior to the description of the main part of the present application, the operation of the dust collecting and storing means 8, that is, the cleaning operation will be described. When the cleaning vehicle arrives at the work site, the cleaning unit 25 at the standby position 37a shown by the phantom line swings to the work position shown by the solid line and contacts the ground, and the cleaning brush 36 starts to rotate, and at the same time, the blower 26. The blade inside starts to rotate. Therefore, the air in the hopper 4 sucked by the blower 26 rapidly enters the suction cylinder 27 from the suction duct 31, becomes a vortex flow, reaches the blower 26, and is ejected from the intake pipe 50 into the cleaning chamber 37. The air in the cleaning chamber 37 is sucked into the hopper 4 by the intake pipe 51.
As a result, a rapid circulating air flow around the blower 26, the cleaning chamber 37, and the hopper 4 is generated, and the cleaning brush 36 causes the road surface 46 to pass.
The dust swept from the air is temporarily lifted up from the road surface 46 by the airflow from the air supply pipe 50, and is immediately sucked into the suction airflow and sucked into the hopper 4.

As is apparent from the drawing, the hopper 4 to the blower 26
The air sucked into the air is dust-removed by the filter 32, but the fine dust that has passed through the filter 32 is
Due to the centrifugal force of the vortex-like airflow generated in the suction cylinder 27, the sub hopper 11 is rotated along the inner peripheral surface of the suction cylinder 27.
Since the air is discharged into the cleaning chamber 37 and the air discharged from the blower 26 into the air does not contain dust,
Further, it is possible to prevent dust from being generated during cleaning.

In the cleaning vehicle 1 described in detail above, when the road surface 26 is cleaned and a predetermined amount of dust is stored in the hopper 4, the cleaning vehicle 1 approaches the rear portion of the stopped carrier (not shown). Although it stops, the approach to the transport vehicle is normal forward running, and since the cleaning vehicle 1 is a cab-over system, the approach is extremely easy, and the transporter makes a U-turn like a conventional rear dump truck. You don't have to. When the cleaning vehicle 1 is stopped at a predetermined position, the first and second lifting cylinders 18 and 21 are actuated to rotate the first and second lifting arms 17 and 19 in the counterclockwise direction in the drawing. The hopper 4 at the dust storage position shown in FIG. 1 is lifted up to the cabin upper position shown in FIG. 2 while drawing an arcuate locus around the pivot point 20 and rotated so that the discharge port 10 faces upward. To be done. By the lifting operation, the connecting portion 5 of the suction hose 51
4 is separated, and the blower 26 is naturally left in the mounting portion, so that the discharge port 10 covered with the hood 28 of the suction cylinder 27 is opened.

Since this lifting operation is performed by using a kind of link mechanism in which two lifting arms 17 and 19 having the same pivot point 20 are connected by two lifting cylinders 18 and 21, the lifted hopper 4 is Despite moving a considerable distance, each lifting arm 1
The swinging angles of 7 and 19 reach the purpose with a relatively small swinging angle, and not only smooth operation can be obtained with a small capacity cylinder having a short stroke, but they can be stored in a small mounting space. Further, since the second lifting arm 19 is bent in an inverted V shape in the drawing as described above, when it is lifted up to the cabin upper position shown in FIG. 2,
It pivots about the pivot point 20 upside down and bends along the outside of the cabin 3, so that even if the pivot point 20 is lowered, the hopper 4 is placed above the cabin 3 without any trouble. It can be lifted and the maximum lifting height of the hopper 4 can be lowered. If this is a linear lifting arm, the pivot point is the cabin 3
Must be set to a position higher than the height of the roof, and the maximum lifting height becomes higher, which may cause a problem in stability. When the hopper 4 is lifted, the dump cylinder 23 is not yet in operation, and therefore the position holding action is still performed and the hopper 4 does not freely swing. Therefore, naturally, the relative movement between the second lifting arm 19 and the hopper 4 is prevented. The physical relationship does not change.

When the hopper 4 is lifted up to the cabin upper position as described above, the first and second lifting cylinders 17, 19 are
Stop operating, then the dump cylinder 23 operates, and the hopper lifted as shown in FIG.
A phantom line 4 in FIG. 3 centering on the pivot point with the suspension arm 9
As indicated by a, the discharge port 10 is rotated so as to face forward and downward, and as a result, the dust contained in the hopper 4 is discharged from the discharge port 10 to the carrier. After the discharge is completed, the respective cylinders operate in reverse to the above, and the hopper 4 is restored to the old state and the cleaning work is continued.

In the above-mentioned embodiment, the lifting means and the dumping means are constituted by a kind of link mechanism in which a plurality of bars and cylinders are combined. However, in the present invention, the lifting means 6 and the dumping means 7 and the hopper 4 are dusty. The structure is not particularly limited as long as it is lifted from the storage position to the upper position of the cabin, and the dust is discharged by dumping so that the discharge port faces downward at the position. Further, the dust collecting / storing means 8 is not limited to the above, and dust on the road surface can be swept and collected.
Any structure may be used as long as it can be collected.

EFFECTS OF THE INVENTION As described above, according to the present invention, the hopper is lifted from the dust storage position to the upper position of the cabin, the hopper is rotated at that position so that the discharge port is directed forward and downward, and the hopper is dumped to the front side to discharge dust. As a result, the U-turn work of the carrier can be eliminated, the approaching work between the cleaning vehicle and the carrier can be facilitated, the safety of the cleaning work can be improved, and the workability of the cleaning work can be improved. Even in the case of front dumping the hopper, the dust receiving port on the rear side of the hopper is used as the discharge port, and the discharge port is inverted from the upper side to the front lower side to discharge the dust. Since it is not necessary to separately provide a discharge port for exclusive discharge and an opening / closing door, it is possible to prevent dust in the hopper from falling during the dumping work and to simplify the configuration of the hopper.

[Brief description of drawings]

The drawings show the embodiments of the present application, FIG. 1 is a side view showing a main part with a part cut away, FIG. 2 is a side view showing an operating state of FIG. 1, and FIG. 3 shows only one side. 1. The top view of FIG. DESCRIPTION OF SYMBOLS 1 ... Cleaning vehicle, 2 ... Car body, 3 ... Cabin 4 ... Hopper, 5 ... Work drive part 6 ... Lifting means, 7 ... Dumping means 8 ... Dust collecting and storing means, 9 ... Suspension arm 10 ... Discharge port 17 ... No. 1 Lifting arm 18 ... 1st lifting cylinder 19 ... 2nd lift arm 21 ... 2nd lifting cylinder 23 ... Dump cylinder

Claims (2)

[Claims] 1. A vehicle body behind a cabin is provided with a hopper for storing dust, a dust collecting and storing means for collecting dust and storing it in the hopper, and a work drive unit for driving a cleaning drive unit. In the cleaning vehicle, the receiving port for receiving the dust from the dust collecting and storing means is provided at the rear part of the hopper as the dust discharging port in the dust storing position, and the hopper is lifted from the dust storing position to the upper position of the cabin on the vehicle body. It is characterized by arranging a lifting means capable of rotating the hopper so that the discharge port faces upward, and a dumping means capable of rotating the hopper at a position above the cabin so that the discharge port faces forward and downward. A cleaning car. 2. The cleaning vehicle according to claim 1, wherein the work drive section is provided at a rear portion of the vehicle body, and the hopper is provided in a space between the work drive section and the cabin work drive section.