JP3277439B2 - Cleaning device for side roads in tunnels - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning device for a side road in a tunnel or a narrow sidewalk.

[0002]

2. Description of the Related Art Conventionally, a fixed comb blade retreating from the outside to the inside in a front portion and a rotating brush having a rotation axis substantially perpendicular to a rear portion are mounted on a road surface so as to be able to press against a road surface in a left-to-right direction. Behind the rotating brushes, the upper part of the box-shaped suction port of a self-propelled cleaning car with a steering handle provided with a box-shaped suction port in which only the lower edge of the front wall does not touch the ground is flexible to a vacuum tank on the automobile. Sidewalk cleaning device connected through a sexual suction pipe
However, the friction force between the box-shaped suction port and a rotating brush (cutter brush) or a fixed comb blade in front of the box-shaped suction port and the road surface hinders the fine steering of the cleaner by the steering handle. In addition, not only is it difficult to clean the side roads and the like in the tunnel, but also the rotation axis of the cutter brush is slightly adjusted so that dust on the road is swept into the substantially box-shaped suction port without being swept forward or sideways. If it is inclined, even if a fixed comb blade is provided in front of it, unsweeping will occur on the road surface within the vehicle width, and dust will easily scatter when cleaning with a cutter brush even if water is sprayed in advance. Improper.

[0003] As an invention which can solve these drawbacks, a box-shaped suction opening whose upper part is connected to a vacuum storage tank on an automobile via a flexible suction pipe is provided with two side walls of the box-shaped suction opening. A rear wheel for bringing the lower edge of the wall into substantially sliding contact with the road surface and traction means by the vehicle are provided, and dust entering the rear portion of the box-shaped inlet from between the lower edge of the front wall and the road surface as the vehicle travels. Is also known from Japanese Utility Model Publication No. 51-13907, for example, in which a hydraulic motor for driving the rotary brush and a protective cover for the rotary brush are provided on one side of the box-shaped suction port. Since it protrudes greatly, it cannot be applied to a sidewalk having a guardrail provided with a width of about 0.5 to 1 U, such as a side road in a tunnel.

[0004]

The problem to be solved by the present invention is to make it possible to clean a side road or the like in a tunnel having a narrow road width without interfering with a guard rail thereof by the latter conventional technique. It is.

[0005]

SUMMARY OF THE INVENTION The present invention provides a box-shaped suction port having an upper portion connected to a vacuum storage tank on a motor vehicle through a flexible suction pipe, and has two side walls and a rear wall of the box-shaped suction port. A pair of left and right independent rotating front wheels whose lower edges are substantially slid on the road surface, a turning rear wheel and a steering handle extending rearward are attached,
A road surface cleaning device having a rotating brush that sweeps dust entering from between a lower edge of a front wall thereof and a road surface upward and forward in a rear portion of a box-shaped intake port towed by the vehicle through a towing arm, Brush bristles of a rotary brush are implanted outside the support cylinder which is supported by a doubling plate fixed to the outer surface of one side wall of one side of the box-shaped suction port so as to be able to move up and down so as to be adjustable. The cylinder is rotatably supported only in rotation, and the output shaft of the hydraulic motor coaxially mounted in the support cylinder is linked to a transmission plate fixed to the free end of the support cylinder of the brush bristle implantation cylinder, and is linked to the transmission plate. A towing arm with a transit tool attached at the tip where the center of a flexible strip that is connected at both ends to the front both sides of the shaped suction port is slidably or rolledly engaged is attached to a side path or the like in the tunnel. It is located above the guardrail.

[0006]

FIG. 1 is a side view of a box-shaped suction port 1 as viewed from the side of an automobile for cleaning a road with a vacuum storage tank, and a flat rectangular shape having a flat U-shaped steering handle 2 attached to the rear end. Of the left and right-pair front wheels 3 supporting the front wall 1a thereof.
And three points on the road surface which are supported by a turnable rear wheel (caster) 4 for supporting the central portion of the rear wall 1b, and the box-shaped suction port 1 is connected to connecting members 5 on both sides of the front wall. The tension is substantially reduced by attaching a passing tool 7 in which the center of a flexible strip (wire, rope, etc.) 6 whose ends are connected to each other, is slidably engaged with a towing arm 8 whose base is supported on the vehicle side. It is steerably pulled by the flexible strips 6, 6 on both sides of the even transit tool. It goes without saying that the left and right front wheels 3 rotate independently.

The lower portions of the side walls 1c and the rear wall 1b of the box-shaped suction port 1 are formed into skirts 1d and 1e made of rubber plates so that they can be substantially slidably contacted with an uneven road surface.
d and 1e are respectively attached to the side walls and the rear wall so as to be able to move up and down, and the front wall 1a of the box-shaped inlet is provided with an adjusting plate 1f for adjusting the gap between the lower edge and the road surface. The skirt 1 on the side wall shown in FIG.
Both ends of d are suspended and supported via a chain 10 on fixing brackets 9 attached to the outer surface of the side wall so as to be able to adjust only vertically.

Reference numeral 11 denotes a rotary brush mounted in a rear portion of the box-shaped suction port 1 so as to sweep dust entering through a gap between an adjusting plate 1f forming a lower edge of a front wall thereof and a road surface upward and forward. The rotating brush 11 is cantilevered by a doubling plate 12 which is fixed to the outer surface of the side wall 1c of the box-shaped suction port 1 on the side of the automobile so as to be vertically movable as described later. The width of the doubling plate 12 in the front-rear direction is made as large as possible so as to be in close contact with the side wall 1c between the front and rear fastening members 9, 9, and an appropriate reinforcing bone 13 is provided on the outer surface thereof to prevent the side wall 1c from vibrating. .

FIG. 2 is a sectional view taken along the line XX of FIG. 1, and a support tube 15 coaxially located in the brush bristle transplanting cylinder 14 of the rotating brush 11 is pressed into the brush bristle transplanting cylinder on its outer periphery. Bearings 16 on both sides, an intermediate cylinder 17 for regulating the distance between the two bearings, and an oil seal 18 adjacent to the bearings.
The vehicle-side end of the support cylinder 15 is integrally connected to the doubling plate 12 via a plurality of bolts 20 via an oil seal retainer 19. Accordingly, the support cylinder 15 and the oil seal retainer 19 are provided in the vertical slot 2 formed in the side wall 1c.
1 (see FIG. 1) is loosely penetrated so that the lowering of the rotating brush can be adjusted according to the abrasion of the bristle. Reference numeral 50
Denotes a plug for filling grease into the empty space between the bearings 16 on both sides.

Reference numeral 22 denotes a hydraulic motor coaxially mounted on the annular seat plate 15a in the support cylinder 15, and an output shaft 23 of the hydraulic motor 22 is connected to the end of the brush bristle setting cylinder 14 on the free end side of the support cylinder. A key 24 is connected to the boss portion of the fixed transmission plate 14a, and a stopper 25 of the transmission plate 14a is detachably fixed to the tip of the output shaft 23. For this reason, the brush bristle setting cylinder 14, that is, the rotating brush 11, is rotatably supported by the support cylinder 15, and is driven by the hydraulic motor 22 in the direction of the arrow in FIG. 1.

As shown in FIG. 3, a two-fold brush bristles 26 made of polypropylene or other synthetic resin are attached to the rotary brush 11 with a piano wire 27 in order to reduce the weight and make the brush ground pressure appropriate. Brush bristle planting strip 2
8 spirally welded to the outer periphery of the brush bristle planting cylinder 14
It winds along the groove formed between the guide strips 29 having a U-shaped cross section, and the connecting portions 27a provided at both ends of the piano wire 27 are respectively engaged with both end flanges 14b of the brush bristle planting cylinder 14. .

FIG. 4 is a rear view of the cleaning device of the present invention in a cleaning state, FIG. 5 is a view taken in the direction of the arrow Z, FIG. 6 is a plan view of a box-shaped suction port index portion, and 30 and 31 are inner walls of a tunnel. , 3
Reference numeral 2 denotes a roadway in the tunnel, 33 denotes a side road in the tunnel, the side road 33 has a guardrail 34, and a side road width B is 0.5 to 1 US.

An automobile 35 for cleaning a roadway has a storage dust discharge cover 36a at the rear end of a vacuum storage tank 36 which is always maintained at a vacuum.
The vacuum storage tank 36 has a bottom rear end at the rear of the vehicle body while rotating the vacuum storage tank 36 from a dust suction resting position shown in FIG. 5 to a rearward tilting position at which stored dust can be discharged. Even if the upper end of the luggage carrier such as a dump truck is higher than the bottom rear end of the vacuum storage tank at the rest position, it is possible to discharge the stored dust on the vacuum storage tank tilting device 37 so as not to interfere therewith. Such a device 37 is not only widely known conventionally but also commonly used in Japanese Patent Publication No. 55-13935.

The other end of a flexible suction tube 38, one end of which is detachably connected to the upper end of the rear end of the vacuum storage tank 36, is connected to the upper end of the box-shaped suction port 1 via the flexible strip 6. The base of the pulling arm 8 for pulling the box-shaped suction port is
Above it, it is inserted into a horizontally fixed guide tube 39 along the rear end of the vacuum tank tilting device 37, and the towing arm 8 slides between the storage position in the vehicle width and the cleaning position of the side road 33. It is adjustable. Therefore, the flexible suction tube 38 is connected to the vacuum storage tank 3.
6, the suction pipe connection port of the vacuum storage tank is sealed,
And if the towing arm 8 is stored within the vehicle width, the vacuum storage tank 36
It can also be used for a roadway cleaning device not shown. The length of the flexible strip 6 shown in FIGS. 5 and 6 is shorter than the actual length for convenience of illustration.

FIG. 7 is an enlarged view of a main part of the doubling plate mounting portion shown in FIG.
c, by screwing a vertical bolt 41 inserted through a horizontal bracket 40 secured to the upper end of the vertical reinforcing bone 13 into a horizontal bracket 42 and fixing it with a locking nut 43, thereby connecting the doubling plate 12 to a pair of front and rear vertical bolts. 4
A means for suspending and supporting up and down along the side wall 1c at 1 and a plurality of horizontal bolts 44 implanted before and after the side wall, respectively;
A vertical slot 45 is formed before and after the doubling plate, and a nut 46 is screwed into the bolt 44 via a washer and tightened to tightly fix the doubling plate 12 to the side wall 1c. Become.

When the fixed support of the doubling plate 12 by the bolts 41 and 44 is loosened and the rotating brush 11 is supported on the road surface by its own weight, the brush bristles 26 are bent substantially uniformly over the entire width of the rotating brush. So as to press against the road surface,
Along with the axial mounting position of the hydraulic motor 22 in the support cylinder 15 approaching the transmission plate 14a of the brush bristle planting cylinder 14,
The weight of the doubling plate 12 is set.

Therefore, when cleaning the side path 33, the fixing of the doubling plate 12 to the side wall 1c of the box-shaped suction port is loosened in advance, and the doubling plate 12 is attached to the side wall 1c with the rotary brush 11 grounded by its own weight. , The rotary brush 11 becomes a position where the rotary brush 11 can be cleaned with respect to the box-shaped suction port 1 supported by the front and rear wheels 3 and 4.

When the box-shaped suction port 1 is moved to the cleaning start point, a seat plate 48 fixed to the lower end of the vertical support shaft 47 (see FIG. 1) of the rear wheel 4 and the vertical support shaft 47 are fixed. It is needless to say that an appropriate interposed object is sandwiched between the lower end of the outer casing 49 on the side of the box-shaped suction port which freely supports only the ascending and descending so that the rotating brush 11 does not touch the ground. Reference numeral 51 in FIG. 1 denotes front and rear rubber rollers which are elastically supported and attached to the box-shaped suction port 1. The rubber rollers 51 protrude from the box-shaped suction port 1 toward the inner wall side of the tunnel, and the inner wall 30 or 31 is connected to the box-shaped suction port. Prevent interference with the suction port.

The rotating brush 11 at the above-mentioned position where cleaning is possible is driven in the direction of the arrow in FIG. 5 and water is sprinkled forward from a water sprinkling pipe 52 attached to the front end of the front wheel mounting portion of the box-shaped suction port 1 as required. Meanwhile, if the box-shaped suction port is pulled in the F direction by the road cleaning automobile 35 in which the vacuum storage tank 36 is maintained at a constant vacuum, the width of the box-shaped suction port incorporating the hydraulic motor 22 is always smaller than the side road width B, Even in a place where there is no guardrail 34, there is no possibility that the lower end opening of the box-shaped suction port is partially exposed on the roadway 32 outside the side road, so that the inside of the box-shaped suction port is provided between the front wall adjusting plate 1f and the road surface. The dust on the road surface entering through the gap is swept upward and forward by the rotating brush 11 and is sucked into the vacuum storage tank 36 from the flexible suction pipe 38, where the dust is settled and separated as before.

A central portion of a flexible strip 6 having both ends connected to both sides of the front wall of the box-shaped suction port 1 is slidably engaged with a passing tool 7 at the tip of the towing arm 8 so as to be flexible. The traction forces acting on the sex strips 6 and 6 are always substantially equal, and the front wheels 3 and 3 supporting the box-shaped suction port 1 in cooperation with the turning rear wheel 4 are independently opposite to each other. If the steering handle 2 applies a turning force to the left or right of the box-shaped inlet 1 with the steering handle 2, the frictional force between the rotating brush 11 and the road surface is relatively small. The vehicle can be easily turned around the center 0 of the axis between the front wheels 3 and 3 and fine steering adjustment is possible.

Although the embodiment has been described above, the passing tool 7 attached to the tip of the towing arm 8 is constituted as a pulley 53 with which the flexible strip 6 is rollingly engaged as shown in FIG. The upper hinge of the possible pulley frame 54 can be pivotally mounted 56 coaxially on both side brackets 55 fixed to the underside of the towing arm. Reference numerals 57 and 58 in the figure supply pressure oil to the hydraulic motor 22,
Reference numeral 59 denotes a connection port of a hose for supplying water to the sprinkler pipe 52, and reference numeral 60 denotes a headlight 61 (see FIG. 5) attached to the front front end of the box-shaped suction port. A connection port of an electric cord is shown, and piping and wiring to each connection port are provided so as not to hinder the steering of the box-shaped suction port.

The reference numeral 62 in FIG. 8 denotes the guide cylinder 39 and the towing arm 8.
And a plurality of pin holes on the towing arm side of the restraining pin 62 are provided at a constant pitch according to the required displacement amount of the passing tool 7 during cleaning.
The towing arm 8 is also provided near the leading end of the towing arm so that the flange 8a can be fixed at the towing arm storage position where the flange 8a contacts the terminal of the guide cylinder 39.

The embodiment in which the towing arm 8 is slidably fitted in the guide cylinder 39 has been described above. However, as shown in FIG. On the undercarriage 35a so as to be pivotable in a horizontal plane, and the leading end of the towing arm is connected to one of a plurality of cable end mounting holes 64 provided at a constant pitch on the undercarriage 35a by a stay 65. By doing so, the passing tool 7 may be adjusted left and right according to the side road width. In this case, when the side road is not cleaned, the towing arm 8 is turned on the chassis 35a and stored in the vehicle width, and is appropriately stored. The towing arm is restrained to the undercarriage by the above-mentioned means. In FIG. 9,
Members denoted by the same reference numerals as those in FIG. 6 indicate corresponding members.

[0024]

According to the present invention, there is provided a tractive arm having a transit tool attached to the front end of a flexible strip having both ends connected to both sides of the front wall of the box-shaped suction port in sliding or rolling engagement. Are positioned above the guide rails, and a pair of left and right independently rotating front wheels are mounted in front of the box-shaped suction port, and a freely turning rear wheel is mounted behind the box-shaped suction port, so that the road width is narrow. As described above, the box-shaped suction port can be finely operated without interfering with the guardrail on the changing side road or the like, and the cleaning ability of the side road or the like in the tunnel can be significantly improved.

[Brief description of the drawings]

FIG. 1 is a side view of an embodiment of the present invention.

FIG. 2 is a sectional view taken along line XX of FIG.

FIG. 3 is a detailed view of a portion Y in FIG. 2;

FIG. 4 is a rear view of the cleaning device of the present invention.

FIG. 5 is a view as viewed in the direction of the arrow Z in FIG. 4;

FIG. 6 is a plan view of the box-shaped suction port traction portion of FIG. 5;

FIG. 7 is an enlarged view of a main part of FIG. 1;

FIG. 8 is a rear view showing another embodiment of the towing arm.

FIG. 9 is a plan view of another embodiment corresponding to FIG. 6;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Box-shaped suction opening 2 Steering handle 3 Front wheel 4 Rear wheel 6 Flexible strip 7 Transit tool 8 Traction arm 11 Rotating brush 12 Doubling plate 14 Brush bristle planting trunk 14a Transmission plate 15 Support cylinder 15a Mounting hydraulic motor Seat plate 21 Long hole of side wall of box-shaped suction port 22 Hydraulic motor 23 Output shaft 26 Brush bristles 33 Side road in tunnel 34 Guard rail 35 Automobile for cleaning roadway 36 Vacuum storage tank 38 Flexible suction pipe

────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Takahiro Konno 1-10-29, Sanno, Akita-shi, Akita Construction Office, Tohoku Regional Bureau, Akita Construction Office (72) Inventor Keiji Maeda 3- Oyamadai, Setagaya-ku, Tokyo 26-2 (72) Inventor Akio Munemura 3-29-13-203 Yatsu, Narashino-shi, Chiba (72) Inventor Hirohiko Takekawa Examiner 1-15-6 Higashioi, Shinagawa-ku, Tokyo Examiner Toshihisa Kobayashi (56) References Special Kaihei 4-60005 (JP, A) Shokai Sho 62-60610 (JP, U) Shokai Sho 61-4520 (JP, U) Shoji Sho 51-13907 (JP, Y1) (58) Int.Cl. ⁷ , DB name) E01H 1/00 E01H 1/05 E01H 1/08

Claims (1)

(57) [Claims] 1. A box-shaped suction port whose upper part is connected to a vacuum storage tank on a motor vehicle through a flexible suction pipe, and both side walls of the box-shaped suction port and lower edges of a rear wall are substantially slid on a road surface. by Ru pair of left and right, Germany
Vertically rotating front wheel, freely turning rear wheel, and extending rearward
A road surface having an operation handle attached thereto, and a rotary brush attached to a rear portion of a box-shaped intake port to be pulled to the vehicle through a towing arm, for sweeping dust entering from between a lower edge of a front wall thereof and a road surface upward and forward. A cleaning device, which is cantilevered by a doubling plate fixed to the outer surface of a side wall of one side of the box-shaped suction port so as to be vertically movable and can be freely rotated through the hole provided in the side wall. A transmission in which the brush bristle setting cylinder of the brush is only rotatably supported, and the output shaft of a hydraulic motor coaxially mounted in the support cylinder is fixed to the end of the brush bristle setting cylinder on the free end side of the support cylinder. Linked to the plate, the front of the box-shaped suction port
The center of the flexible strip with both ends connected to the side
Is a towing arm with a via
Located above the guardrail attached to the side road in the tunnel
A cleaning device for a side road or the like in a tunnel, characterized by being made to work.