Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS3011206 A
Publication typeGrant
Publication dateDec 5, 1961
Filing dateNov 13, 1957
Priority dateOct 4, 1957
Also published asDE1126902B
Publication numberUS 3011206 A, US 3011206A, US-A-3011206, US3011206 A, US3011206A
InventorsKarl Breither
Original AssigneeFahrzeugban Haller G M B H
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Vehicle for cleaning streets
US 3011206 A
Images(1)
Previous page
Next page
Description  (OCR text may contain errors)

De@ 5, 1961 K, BREITHER 3,011,206

VEHICLE FOR CLEANING STREETS y Filed Nov. 13, 1957 INVENTOR /52/5 /ara/xf' BY @MM f, 10Q/hf ATTORNEY United States rhe present invention relates to a road cleaning vehicle.

it is a principal object of the present invention to provide a new street-cleaning vehicle which facilitates an improved and more thorough cleaning of streets, expecially when the dirt to be removed has dried up or become solidified. v

A further object of the present invention is to provide a new street-cleaning vehicleuwhich wets the vdirt or rubbish on the road, which sweeps thel dirt substantially to one point, and which then sucks up the dirt in its wet condition. v

Another object of the present invention is to provide a vehicle for carrying out the street-cleaning operation very economically despite the use of large quantities of water for wetting the dirt on the road.

A further object of the present invention is to provide a vehicle or" the most functional design and the most effective weight distribution attainable.

An important feature of the present invention therefore consists in the provision of a motor vehicle which is capable of first mixing the dirt on the road with Water so as to form a watery mixture and then sucking up 'such mixture, for example, by drawing it into a collecting tank mounted on a motor vehicle.

According to another feature of the present invention, the watery mixture thus collected in the tank may then be separated within said tank into solid particles and soiled water by allowing the solid particles to settle in the vehicle tank by tgravity.

Another feature of the invention consists in the subsequent removal of the soiled water from the collecting tank, in thereafter against sucking another quantity of watery mud mixture from the street into the collecting tank and again separating the same therein into relatively solid mud and soiled water, in continuing this operation until the container is filled with relatively solid mud to a certain capacity, and in then removing the mud from the container.

A further object of the present invention is to provide a scrubbing and sweeping mechanism by means of which the muddy water, before it is sucked up, is scrubbed off the street and guided to the suction device which may be disposed, for example, in front of, laterally of, orV

behind the scrubbing and sweeping mechanism.

Another object of the invention is to provide means for permittingthe soiled water after Ithe solid dirt particles have been separated therefrom and preferably after having been cleaned by a filter, to be used againfor wetting the dirt on the road. It will thus be possible to use a relatively small quantity of fresh water or, in other words, to make one filling of the fresh water container last for an extended operating period of the vehicle. Therefore, the term fresh water employed here does not indicate Vpure water only, but also water mixed with mud. p l

Another important object of the present invention consists in designing ,the street-cleaning vehicle in such a manner `that the center of gravity of the entire tank structure containing the fresh-water container and the container for the muddy mixture'remains either substantially the same or varies but slightly no matter whetherthe fresh-water container is filled and the mud container is empty or the mud container is filled and the arent @f fresh lwater container is empty. For attaining this object, the tank may be designed so that the two containers therein overlap each other in the longitudinal direction of the tank, for example, by providing at least one diagonal or horizontal partition inside of the tank which separates the tank into containers lying substantially one above the other. l

These, as well as additional objects, features, and advantages of the present invention, will be more apparent from the following detailed description thereof, particu* larly when read with reference to the accompanying drawings, in which- FIG. 1 illustrates a side view ofa vehicle with a collecting tank thereon shown in cross section;

FIG. 2 illustrates a cross section of the tank taken along line 2 2 of FIG. l;

FIG; 3 illustrates a plan view of the washing and sweeping mechanism; while FIG. 4 illustrates a similar plan view of a modification of the washing and sweeping mechanism.

Referring tothe drawings, the street-cleaning vehicle according to the invention consists of a truck having a chassis 10, and a tank 12 mounted thereon behind the drivers cab 11. By means of a partition 13 extending diagonally from a point near the upper front end of the tank to a point near` its lower rear end of the tank is divided into a front container 14 substantially disposed underneath partition 13, and a rear container 15, substantially disposed above the partition. The front container l14 serves as a fresh-water container and is accessible, for example, through yan opening 16 at the top which may be provided with a suitable cover, while the rear container 15 serves as a mud container and is also provided with an opening 17 which can be closed by a cover. v

A scrubbing or sweeping brush 18 is mounted on chassis 10 between the front and rear wheels of the vehicle and, while the vehicle is being driven, this'brush 18 is rotated by suitable driving means, not shown, in the direction indicated by the arrow. In front of the rotary brush 18 is a spraying or flushing mechanism which substantially consists of a pipe 19 extending parallel to brush 18. This pipe 19 is connected to the fresh-Water container 14 by means of pipe 32 and through a plurality of openings along its length, sprays powerful jets of Water directly upon the road Valong lthe entire length of the brush. The sweeping brush =18 is mounted in the usual manner so as to extend at an oblique angle to the direction of .travel of the vehicle. At the rear ends of and intermediate brush 18 and spray pipe 19, a suction device 20 is mounted on chassis 10 which is connected with the interior of the mud container 15 by means of a pipe 2x1.

A vacuum or suction pump 22 ismounted in a separate compartment which forms a recess in the fresh-Water container behind the drivers seat and may, for example, be coupled to the engine of the vehicle. Pump 22 is connected by means of -pipe 31 -to the inside `of mud container 15, which is sealed tightly toward the outside for maintaining a vacuum therein. tends through pipe 21 to suction device 20.

On the rear Wall of-tank 12, av -ap 23 is hinged so as to swing upwardly to permit the mud to berremoved from container .15. During the operation of lthe vehicle the flap is pressed tightly against the rear Wall of tank 12 by suitable, easily'released means, such as bolts or the like so as to seal container 15. The upper part of container -15 also contains a device yfor emptying the soiled 'water therefrom. This device consists of a pipe 27 which is mounted on a side wallv of container 15 so as to be pivotable at 25 about a horizontal axis by means tof a handle 26 or the like. yPipe 27 is connected to a hose 28 through which the muddy vwater may be con- This vacuum also exducted to a suitable place, for example, a sewer or ditch.

At the beginning of the operation, the front container 14 is filled with fresh water, while the rear mud container 15 is empty. VInV this case, the center of gravity of the entire tank is located approximately at the point S1. During the operation of the vehicle, the fresh water is gradually drained from container i4 through the spraying or flushing mechanism 19 and thus sprayed upon the road where it becomes mixed with the dirt on the road. The muddy water thus formed is conveyed diagonally outward by the rotary brush 1S in the direction of the arrow p and conducted :toward the suction device 20 at the outer end of brush 18 and facing in the direction of rotation x. The muddy water is then sucked up by the suction device 20 and drawn into the mud container 15 by the effect of the vacuum within the container.

The heavier mud particles will then settle inthe bottom section yof mud container 15, as shown in FIGS. l and 2 at 29, while the lighter soiled water will collect above the mud. The pivotable pipe 27 which serves for draining the soiled water from container 15 is preferably ad` justed to a position in which its inlet opening will be disposed slightly above the level 3l. of the mud so that the soiled water 30 above the mud level 3l may be drained 0E through hose 28 into a ditch, sewer, or the like, and the space within container l5 thus becoming empty will become available for receiving additional muddy water. The draining may be effected by gravity or by means of a pump, for example, by `a suitable connection to suction pump 22. Instead of providing `a manual control of the v drainage of the ywater from container 1S, the drainage may also be carried out automatically, for example, by means of a float with an inlet thereon which is connected to hose 28 and adjusts itself.

Due to the overlapping arrangement of the two contajners 14 and l5 and their separation by the diagonally inclined wall i3, the center of gravity will shift only a relatively short distance during one complete cycle of operation. Thus, while at Vthe beginning of the streetcleaning operation, When the fresh water container 14 is full and mud container l5 is empty, the center of gravity is located substantially at the point S1, it will shift during the operation gradually toward the rear so that, when the fresh Water container 14 is empty and the mud container l5 is filled to its normal capacity, the `center of gravity will be located substantially at the point S2. The weight distribution of the vehicle is preferably designed so that the distance between these two points S1 and S2 will be no larger than one-fifth to a maximum of onefourth of the total length of the entire tank 12.

FIG. 4 illustrates a modification of the invention in which the rotary brush is divided into two separate brushes, namely, a main brush 18a and a supplementary brush 13b at the outer end of brush 18a and coaxial therewith. By rotating brush 18h at a different speed from that of brush 18a, it is possible to conduct the muddy water still more effectively toward suction device 20 than by` means of a single brush.

Although not particularly illustrated in the drawings, the invention may also be modied by providing two rotary brushes at opposite oblique angles relative to the direction of :travel of the vehicle, that is, in a V-shaped arrangement converging toward the rear, and rotatable in opposite directions to each other. The suction device 20 would then be mounted centrally between or behind the converging ends of the two brushes.

Instead of merely draining and discarding the soiled water from container 15 after the same has become somewhat puried by the settling of the solid mud particles toward the bottom of the container, this water may also be utilized again for washing the road. For this purpose, a suitable switching valve 36 is provided which permits either the fresh Water remaining in container 14 or the soiled water from container 15 to be used alone or to be mixed with each other before being passed to spraying device 19. In this event, it is advisable to provide filtering means 35 and to pass the soiled water therethrough so as to purify it as much as possible before it enters into the spraying device 19 so that the nozzle openings thereof will not become clogged- Although my invention has been illustrated and described with reference to the preferred embodiments thereof, I wish to have it understood that it is in no way limited to the details of such embodiments, but is capable of numerous modifications within the scope of the appended claims.

Having thus fully disclosed my invention, what l claim is:

l. A cleaning arrangement for cleaning dirt from a surface, comprising in combination, wheeled supporting means movable in a predetermined direction; means mounted on said supporting means for spraying fluid onto said surface to be cleaned; elongated sweeping means mounted on said wheeled supporting means and located in said predetermined direction of movement behind the surface portion sprayed by said spraying means, said sweeping means being arranged parallel to said surface and at an angle to said predetermined direction of movement so as to have in said direction a forward and a rear end, the mixture of liquid and dirt being swept by said sweeping means duringmovement of said wheeled supporting means in direction from said forward to said rear end thereof and collecting at said rear end; and removing means mounted also on said wheeled supporting means and located with its receiving portion in the region of said rear end of said sweeping means for removing therefrom the collected liquid-dirt mixture.

2.` A cleaning arrangement for cleaning dirt from a surface, comprising in combination, wheeled supporting means movable in a predetermined direction; meansy mounted on said supporting means for spraying fluid onto said surface to be cleaned; elongated sweeping means mounted on said wheeled supporting means and located in said predetermined direction of movement behind the surface portion sprayed by said spraying means, said sweeping means being arranged parallel to said surface and at an angle to said predetermined direction of movement so as to have in said direction a forward and a rear end, the mixture of liquid and dirt being swept by said sweeping means during movement of said wheeled supporting means in direction from said forward to said rear end thereof and collecting at said rear end; and removing suction means mounted also on said wheeled supporting means and located with its receiving portion in the region of said rear end of said sweeping means` for removing by suction therefrom the collected liquid-dirt mixture.

3. A cleaning arrangement for cleaning dirt from a surface, comprising in combination, wheeled supporting means movable in a predetermined direction; a container mounted on saidv supporting means for holding a fluid; means mounted on said supporting means for spraying said fluid onto said surface to be cleaned; velongatedsweeping means mounted on said wheeled supporting means and located in said predetermined direction of movement behind the surface portion sprayed by said spraying means, said sweeping means being arranged parallel to said surface and at an angle to said predetermined direction of movement so as to have in said direction a forward and a rear end, the mixture of liquid and dirt being swept by said ,sweeping means during movement of said wheeled supporting means in direction from said forward to said rear end thereof and collecting at said rear end; and removing means mounted also on said wheeled supporting means and located with its receiving portion in the region of said rear end of said sweeping means for removing therefrom the collected liquid-dirt mixture. i

4.k A cleaning arrangement for cleaning dirt from a surface, comprising in combination, wheeled supporting means movable in a predetermined direction; means mounted on said supporting means for spraying lluid onto said surface to be'cleaned; elongated sweeping means mounted on said wheeled supporting means and located in said predetermined direction of movement behind the surface portion sprayed by said spraying means, said sweeping means being arranged parallel to said surface and at an angle to said predetermined direction of movement so as to have in said direction a forward and a rear end, the mixture of liquid and dirt being swept by said sweeping means during movement of said wheeled supporting means-n direction from said forward to said rearend thereof and collecting at said rear end; a containermounted on said supporting means; and removing means mounted also on said wheeled supporting means and located with its receiving portion in the'region of said rear end of said sweeping means for removing therefrom the' collected liquid-dirt mixture, said removing means having a discharging portion communicating with said container for discharging said mixture into said container.

5. A road cleaning vehicle for cleaning dirt from a road surface during movement of said vehicle, comprising in combination, a vehicle frame movable in a predetermined direction; two containers on said frame; a ushing conduit having one end connected to one of said containers and an open end near said road surface for flushing the same with a liquid from said one container so as to form a mixture of said liquid with said dirt; elongated sweeping means mounted on said frame and extending obliquely transversely of said predetermined direction behind the surface portion ushed by said ilushing conduit for sweeping said mixture transversely to one end of said sweeping means during said movement of said frame; a suction conduit having one end communicating with the other one of said containers and another end open adjacent said end of said sweeping means; and means for maintaining negative pressure in said ,other container.

6. A road cleaning vehicle for cleaning dirt from a road surface during movement of said vehicle, comprising in combination, a vehicle frame movable in a predetermined direction; two containers on said frame; a ushing conduit having one end connected to one of said containers and an open end near said road surface for ushing the same with a liquid from said one container so as to form a mixture of said liquid with said dirt; rotary brush means mounted on said frame and having an axis of rotation extending obliquely transversely of said predetermined direction behind the surface portion nshed by said ushing conduit for sweeping said mixture transversely to one end of said sweeping means during said movement of said frame; a suction conduit having one end communicating with the other one of said containers and another end open adjacent said end of said sweeping means; and means for maintaining negative pressure in said other container.

7. A road cleaning vehicle for cleaning dirt from a road sur-face during movement of said vehicle, comprising in combination, a vehicle frame movable in a predetermined direction; two containers on said frame and at least partly superimposed upon each other; a flushing conduit having one end connected to one of said containers and an open end near said road surface for ushing the same with a liquid from said one container so as to form a mixture of said liquid with said dirt; elongated sweeping means mounted on ysaid frame and extending obliquely transversely of said predetermined direction behind the surface portion flushed by said ushing conduit for sweeping said mixture transversely to one end of said sweeping means during said movement of said frame; a suction conduit having one end communicating with the other one of said containers and another end open adjacent said end of said sweeping means; and means for maintaining negative pressure in said other container.

8. A road cleaning vehicle for cleaning dirt from a road surface during movement of said vehicle, comprising in combination, a vehicle frame movable in a predetermined direction; a tank on said vehicle frame; a partition in said tank so as to divide the same into two containers; a iiushing conduit having one end connected to one of said containers and an open end near said road surface for ushing the same with a liquid from said one container so as to form a mixture of said liquid with said dirt; elongated sweeping means mounted on said frame and extending obliquely transversely of said predetermined direction behind the surface portion flushed by said flushing conduit forsweeping said mixture transversely to one end of said sweeping means during said movement of said frame; `a suction conduit having one end communicating lwith the other one of saidcontainers and another end open adjacent said end of said sweeping means; and means for maintaining negative pressure in said other container. A Y

9. A road cleaning vehicle for cleaning dirt from a road surface during movement of said vehicle, comprising in combination, a vehicle frame movable in a predetermined direction; a tank on said vehicle frame; an obliquely inclined partition in said tank so as to divide the same into an upper and lower container; `a flushing conduit having one end connected to said lower container and -an open end near said road surface for flushing the same with -a 'liquid from said lowerl container so as to form a mixture of said liquid with said dirt; elongated sweeping means mounted on said frame and extending obliquely transversely of said predetermined direction behind the sur-face portion flushed by said ushing conduit for sweeping said mixture transversely to one end of said sweeping means-during said movement of said frame; a suction conduit having one end communicating with said upper container and another end open adjacent said end of said sweeping means; and means for maintaining negative pressure in said upper container.

l0. A road cleaning vehicle for cleaning dirt from a road surface during movement of said vehicle, comprising in combination, a vehicle frame movable in a predetermined direction; a tank on said vehicle frame; an obliquely inclined partition in said tank so as to divide the same into -an upper and lower container, said lower container being -arranged forward of said upper container in said predetermined direction of movementfa flushing conduit having one end connected to said lower container and -an open end near said road surfacel for ushing the same with a liquid from said lower container so as to form a mixture of said liquid with said dirt; elongated sweeping means mounted on said frame and extending obliquely transversely of said predetermined direction behind the surface portion flushed by said flushing conduit for sweeping said mixture transversely to one end of said sweeping means during said movement of said frame; a suction conduit having one end communicating with said upper container and another end open adja-A cent said end of said sweeping means; and means lfor maintaining negative pressure in said upper container.

l1. A road cleaning vehicle 'for cleaning dirt from a road surface during movement of said vehicle, comprising in combination, a vehicle frame movable in a predetermined direction; two containers on said frame; a flushing conduit having one end alternatingly connectable to either one and Iboth of said containers and an open end near said road surface for flushing the same with a liquid from said containers so as to form a mixture of said liquid lwith said dirt; elongated sweeping means mounted on said frame and extending obliquely transversely of said predetermined direction behind the surface portion flushed -by said ilushing conduit for sweeping said mixture transversely to one end of said sweeping means during said movement of said frame; a suction conduit having one end communicating with'one of said containers and another end open adjacent said end of said sweeping means; and means for maintaining negative pressure in said one container.

12. A road cleaning vehicle Ifor cleaning dirt from a road surface during movement of saidvehicle, comprising in combination, a vehicle frame movable in a predetermined direction; -two containers on said frame; a ushing conduit having one end connected to one of said containers and an open end near said road surface for flushing the same with a liquid from said one container so as to :form a mixture of said liquid with said dirt; elongated sweeping means mounted on said frame and extending ohliquely Atransversely of said predetermined direction behind the surface portion flushed by said Hushing` conduit for sweeping said mixture transversely to one end of said sweeping means during said movement of said frame; a suction conduit having one end communicating with the other one of said containers and another end open adjacent said end of said sweeping means; and a suction pump mounted on said vehicle frame for maintaining negative pressure in said other cont-ainer.

13. A road cleaning vehicle for cleaning dirt lfrom a road surface during movement of said vehicle, comprising in combination, a vehicle frame movable in a predetermined direction; two containers on said frame; a flushing conduit having one end connected to one of said containers and an open end near said road surface for flushing the same with a liquid from said one container so as to form a mixture of said liquid with said dirt; elongated sweeping means mounted on said frame and extending obliquely transversely of said predetermined direction behind the surface portion fiushed by said ushing conduit for sweeping said mixture transversely to one end of said sweeping means durin'gsaid movement of said frame; a suction conduit having one end communieating with the other `one of said containers and another end open adjacent said end of said sweeping means; means for maintaining negative pressure in said other container for drawing said mixture through said suction conduit into said other container; and a discharging conduit communicating with said other container at -a point spaced from the bottom thereof, whereby a mixture of dirt and water is drawn from said road surface into said other container and, upon settling of said dirt from said mixture, a supernatant liquid may be discharged through said discharging conduit.

14. A road cleaning vehicle for cleaning dirt from a road surface during movement of said vehicle, comprising -in combination, a vehicle frame movable in a predetermined direction; two containers on said frame; a ilushing conduit having one end connected to one of said containers and an open end near said road surface for llushing the same with a liquid from said one container so as to form a mixture of said liquid with said dirt; elongated sweeping means mounted on said frame and extending obliquely transversely of said predetermined direction behind the'surface portion ushed by said ushing conduit for sweeping said mixture transversely to one end of said sweeping means during said movement of said frame; a suction conduit having one end communicating with the other one of said containers and another end open adjacent said end of said sweeping means; means for maintaining negative pressure in said other container for drawing said mixture through said suction conduit into said other container; and a discharging conduit communicating with said other container at a point adjustably spaced from the 'bottom thereof, whereby a mixture of dirt and water is drawn fromsaid road surface into said other container and, upon settling of said dirt from said mixture, a supernatant liquid may be discharged through said discharging conduit.

References Cited in the le of this patent UNITED STATES PATENTS

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US287811 *Aug 27, 1883Nov 6, 1883 Cleaning sewers
US983988 *Apr 17, 1906Feb 14, 1911Charles B FosterPneumatic cleaner.
US1268962 *Jun 25, 1917Jun 11, 1918Halla F GrayCarpet-washing machine.
US1369118 *May 21, 1917Feb 22, 1921Motorcycle Sweeper CompanyStreet-sweeper
US1732552 *Oct 25, 1926Oct 22, 1929Berlin Chapman CompanyBlancher
US1899019 *Sep 2, 1927Feb 28, 1933Deutsch LeoApparatus for cleaning containers
US2333829 *Mar 1, 1941Nov 9, 1943Terry Merrill HScrubbing attachment for portable vacuum-type floor sweepers
US2653116 *Mar 16, 1949Sep 22, 1953Cee Bee Chemical Co IncMethod of removing sealant from fuel tanks
US2753877 *Oct 19, 1953Jul 10, 1956Mcknight James LWash pit cleaner
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3151348 *Feb 2, 1962Oct 6, 1964Woma Appbau Wolfgang MaasbergDevice for cleaning roadways and similar surfaces
US3193867 *Aug 12, 1963Jul 13, 1965Central Engineering Company InStreet cleaning apparatus
US3447188 *Mar 16, 1967Jun 3, 1969Woma Maasberg Co Gmbh WRoad-cleaning vehicle
US3753777 *Oct 13, 1971Aug 21, 1973Tennant CoSurface cleaning method
US3860991 *Aug 2, 1972Jan 21, 1975Heidt GuenterA street-cleaning machine
US4199837 *Feb 13, 1978Apr 29, 1980Aquatech, Inc.Apparatus for sewer cleaning and the like
US4207647 *Dec 27, 1978Jun 17, 1980Mcneil CorporationMobile sewer cleaning and vacuum unit
US4234980 *May 16, 1979Nov 25, 1980Aquatech, Inc.Apparatus for sewer cleaning and the like
US4356589 *Nov 12, 1980Nov 2, 1982Hestair Eagle LimitedRefuse collecting apparatus
US4586208 *Dec 17, 1984May 6, 1986Tennant CompanyFloor maintenance machine and method
US4741069 *Nov 14, 1986May 3, 1988Kurt HelmMobile wet cleaning machine
US4935984 *Feb 9, 1989Jun 26, 1990Guzzler Manufactureing, Inc.Vacuum refuse collecting vehicle
US4956891 *Feb 21, 1990Sep 18, 1990Castex Industries, Inc.Floor cleaner
US5561921 *Dec 30, 1994Oct 8, 1996Zenon Airport Environmental, Inc.Vehicular apparatus for removing snow and aircraft de-icing or anti-icing liquids from runway surfaces
US5630286 *Oct 31, 1994May 20, 1997Zenon Airport Environmental, Inc.Vehicular apparatus for removing de-icing liquid
US6948213 *May 6, 2002Sep 27, 2005Jongsoon KimVehicle for sweeping streets
US7216397 *Aug 13, 2003May 15, 2007Paul TannerCollection tank and associated cleaning system
Classifications
U.S. Classification15/320, 134/21, 134/98.1, 134/10, 134/103.1, 15/340.4, 134/6, 134/111
International ClassificationE01H1/10, E01H1/08
Cooperative ClassificationE01H1/103, E01H1/0845
European ClassificationE01H1/10B2, E01H1/08C2B