JPH0781249B2 - Floor cleaning car - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driver-installed floor cleaning vehicle equipped with a cleaning brush for cleaning a floor surface with a cleaning liquid and a squeegee for collecting dirty water after cleaning.

[0002]

2. Description of the Related Art A conventional floor cleaning vehicle of this type is disclosed in Japanese Patent Publication No.
As is known from Japanese Patent Publication No. 3-10668 and Japanese Patent Publication No. 46-22393, a cylindrical cleaning brush 100 is arranged in front of a front wheel, and a squeegee 10 is arranged behind a rear wheel.
1 is provided (FIG. 8A), and the distance between the cleaning brush 100 and the squeegee 101 is large. Further, there has been proposed one in which the conventional cylindrical cleaning brush 100 is replaced with a plurality of disc cleaning brushes.

[0003]

In the former prior art, since the distance between the cylindrical cleaning brush 100 and the squeegee 101 is large, when the steering brush is steered, the movement locus of the squeegee 101 at the corner portion is as shown in FIG. 8B. There is a fatal problem in that the cleaning brush 100 is largely projected outward with respect to the movement path of the cleaning brush 100, and recovery leakage of sewage occurs inside the corner portion. Further, since the cylindrical cleaning brush is used, there is a problem that the cleaning brush comes into line contact with the floor surface and the cleaning performance is lowered. Therefore, it is necessary to drive the cleaning vehicle at low speed to enhance the cleaning effect.

In the latter prior art, since a plurality of disc type cleaning brushes are used, the cleaning ability can be improved. However, as shown in FIG. Since it is arranged in front of the front wheels (showing the case where the wheels are steered and the rear wheels are driven), the locus between the cleaning brush 200 and the squeegee 101 becomes as shown in FIG. 9B, and a recovery leak occurs inside the corner portion. There is a problem that occurs. If a plurality of disc type cleaning brushes are to be arranged behind the front wheels in order to bring them closer to the squeegee 101, the cleaning brush near the center of the vehicle body width will be located directly below the vehicle body and a replacement cleaning brush can be used. There was a problem that disappeared. The present invention is
An object of the present invention is to solve the above-mentioned problems, prevent the collection and leakage of dirty water in the corner portion, improve the cleaning ability and facilitate the replacement of the cleaning brush.

[0005]

DISCLOSURE OF THE INVENTION The present invention provides a driver-ride type floor cleaning vehicle equipped with a cleaning brush for cleaning a floor surface with a cleaning liquid and a squeegee for collecting dirty water after cleaning.
A squeegee is placed behind the rear wheels, and a horizontal suspension board is mounted vertically below the vehicle in front of the rear wheels, and a brush mounting plate is pivotally supported on the suspension board for horizontal rotation. In addition, a locking member for locking the rotation is provided, and a plurality of disc type cleaning brushes are arranged side by side in the vehicle width direction so that the brush mounting plate is displaced from the rotation center of the brush mounting plate and is exchangeable. It is characterized by being formed.

[0006]

Since the cleaning brush and the squeegee are arranged close to each other with the rear wheel sandwiched between them, even when cleaning the corner portion, the movement trajectory of the cleaning brush and the movement trajectory of the squeegee substantially coincide with each other, and as a result, at the corner portion. It is possible to prevent leakage of waste water and improve the finish of the floor surface. When replacing the cleaning brush due to wear of the cleaning brush, etc., unlock the brush mounting plate by the locking member and then rotate the brush mounting plate around the pivot part to operate the cleaning brush manually. It is easy to move to the side of the car body and the cleaning brush can be easily replaced by hand in that state.

[0007]

The present invention will be described in detail below with reference to the drawings showing the embodiments. In the drawings, reference numeral 1 denotes a floor washing vehicle, which includes one steerable front wheel 2 and two rotatably driven rear wheels 3, and an operation control device such as a steering wheel 5 and a washing liquid tank 6 on a vehicle body 4. The sewage tank 7, the blower 8 and other devices required for cleaning are mounted so that the driver can board and run.

In the floor cleaning vehicle 1, a cylindrical sweeping brush 8 is mounted in front of the front wheel 2 as follows. The sweeping brush 8 is a housing 9 that houses the brush.
1 is rotatably supported and is rotated clockwise in FIG. 1 by a hydraulic motor (not shown). Thus, the housing 9
Is mounted on the vehicle body 4 so as to be vertically movable by parallel links 10 attached to both ends (one side is omitted), and vertical movement within a certain range and adjustment of contact pressure are performed by an elevating mechanism 11. Reference numeral 12 is an L-shaped lever attached to both ends of a pivot 13 pivotally supported on the vehicle body 4, and a connecting rod 14 pivotally attached to one side of the L-shaped lever 12 is pin-connected to the housing 9 through a long groove 15. The housing 9 is biased in the pulling direction by a spring 16 stretched between the other side of the L-shaped lever 12 and the vehicle body 4.

Reference numeral 17 denotes an operating lever attached to the pivot shaft 13 at a substantially intermediate point thereof. A cylinder 18 is arranged between the operating lever 17 and the vehicle body 4. The cylinder 18 is operated by the operation of the cylinder 18.
Is pushed down against the spring 16, the sweeping brush 8 is grounded to the floor surface 19 with an appropriate contact pressure, and the cylinder 18 is operated in reverse, so that the cylinder 1 with the pulling force of the spring 16
By both of the action of 8 and 8, the housing 9 is pulled up to a predetermined position and the pulled up position is held. 20 is a dust box, which is a buckle 21 on both sides and a pulling tool 22 on the upper side.
Is detachably attached to the housing 20 to store the dust swept up by the sweeping brush 8, and when the dust reaches a predetermined amount, the dust is removed and the stored dust is discarded.

Next, the mounting of the disc type cleaning brush 23 mounted in front of the rear wheel 3 will be described. A suspension board 24 is attached so as to bridge between a pair of left and right parallel links 25 provided on both sides of the vehicle body 4, and is vertically movable with respect to the vehicle body 4. Thus, the rear side edge of the suspension board 24 has an arcuate shape 27 corresponding to the turning radius of the mounting plate 26 described later. Reference numeral 28 is a relief for allowing the mounting of a hydraulic motor 29 described later. Reference numeral 30 denotes an elevating cylinder attached to the vehicle body 4, which is connected to a rib 33 of the hanging board 24 via an L-shaped lever 31 pivotally supported on the vehicle body 4 and a connecting rod 32 pivotally attached to the lever. Moves up and down within a predetermined range by the operation of the lifting cylinder 30, and adjusts the contact pressure of the cleaning brush 23, which will be described later, appropriately.

Next, the mounting of the mounting plate 26 will be described. Reference numeral 34 is a main shaft, which is fixed to the front side of the suspension board 24 at approximately the center of the width of the vehicle body 4. An arm rod 35 is provided at the lower end of the main shaft 34, and a free joint including a spherical bearing 36 shown in FIG. Is pivotally supported by the arm rod 35, and a mounting plate 26 is mounted on the arm rod 35. Reference numeral 36A denotes a hook-shaped suspending device fixed to the mounting plate 26, and the suspending device 36A is hooked on the arc-shaped edge 27 of the suspending board 24 to always hold the mounting plate 26 in a substantially horizontal position. The attitude of the mounting plate 26 is not limited to the above. For example, an arc-shaped long hole is formed in the suspension board 24, a bolt is planted in the mounting plate 26, and the head is hooked in the long hole. The structure does not matter as long as it can be held substantially horizontally. Reference numeral 37 is a drawer handle fixed to the mounting plate 26. Reference numeral 38 denotes a lock pin exemplified as a locking member, which is an attachment arm 39 extending from the suspension board 24.
Lock pin 38 arranged at the tip of the
6 is urged downward by the spring 41 in FIG. 6 to engage with and disengage from the lock holes 42, 42a formed in the mounting plate 26 to lock the mounting plate 26 in the working position shown in FIG. 3 and the rotating position shown in FIG. 4, respectively. It is supposed to do.

The disc type cleaning brush 23 is attached to the attachment plate 26 as follows. In the present embodiment, three cleaning brushes 23 are used as one set, and two cleaning brushes 23 are used as the vehicle body 4.
On the left and right sides (Fig. 3), the other one is located at the center of the above two and slightly to the rear side. The intermediate cleaning brush 23 is positioned so that the peripheral cleaning area overlaps the cleaning areas of the cleaning brushes 23 on both sides, and is rotatably mounted by the mounting shaft 43 while being suspended from the lower surface of the mounting plate 26. As a result, a wide cleaning width is covered and leakage between cleaning brushes is prevented. Thus, these three cleaning brushes 23 are moved to the lower side (the left side of the vehicle body) in FIG. 3 by the driving member 44 constituted by the gear train from the hydraulic motor 29 installed on the mounting plate 26.
The cleaning brush 23 of the
3 is rotated clockwise, and the cleaning brush 23 in the middle is rotated counterclockwise. The reference numeral 45 designates a cleaning liquid supply pipe for the vehicle body 4
The washing liquid tank 6 mounted on the pipe is piped to the mounting shafts 43 of the three cleaning brushes 23 through the liquid amount adjusting valves 46, and an appropriate amount is dropped by gravity from the downflow hole 47 formed in the mounting shafts 43 to the center of the cleaning brushes 23. Is supplied, but the supply of cleaning liquid is
Similar to the conventional device, the purpose can be achieved even if the cleaning brush 23 is supplied to the front side, that is, the front side by the shower method.

Finally, the squeegee 48 is attached as follows. The squeegee 48 has been widely used in floor cleaning vehicles, and various shapes are adopted for the squeegee. In the present embodiment, the squeegee 48 is appropriately selected and used. Is omitted. The squeegee 48 is a quadrangular frame body 4.
It is attached to the rear side (rear side) of 9 via a mounting shaft 50, and its lateral width is set to be substantially equal to or slightly larger than the cleaning width by the cleaning brush 23.

Next, 51 is a front squeegee, which is equipped with mounting arms 53 on a mounting shaft 52 provided on the front side of the frame 49, and a kind of rubber curtain made of hard rubber or the like on both left and right ends of the mounting arms 53. Mounted and configured, each with rear wheel 3
Are inclined toward the inside of the vehicle body 4 in front of each other, guide the dirty water on the floor surface 19 through which the rear wheels 3 pass toward the inside of the vehicle body, and prior to the passage of the rear wheels 3, The part of dirty water is removed in advance to prevent the rear wheel 3 from slipping. A frame body 49 to which the squeegee 48 and the front squeegee 51 are attached as described above
Is attached to the vehicle body 4 so that the squeegee 48 is located behind the rear wheel 3 and the front squeegee 51 is located between the rear wheel 3 and the cleaning brushes 23 on both left and right sides. That is, the attachment is performed by a pair of L-shaped levers 5 (one side omitted) pivotally attached to the vehicle body 4.
The frame body 4 is arranged so that when one of the skewers 48 and 51 touches the floor surface 19 at one end thereof, it is grounded in a horizontal state with the floor surface 19.
Attach to 9. 55 is a lifting cylinder attached to the vehicle body 4,
The elevating cylinder 55 and the other end of the L-shaped lever 54 are connected to each other by an L-link 56 and a stroke-adjustable rod 57, and the frame 49 is moved up and down within a predetermined range by the operation of the cylinder 55. There is.

Reference numeral 58 denotes a suction pipe for sucking the sewage collected by the squeegee 48, which opens into the sewage tank 7 mounted on the vehicle body 4. A vacuum pipe 59 connected to the blower 8 is opened in the sewage tank 7, and the blower 8 sucks the air in the sewage tank 7 to a negative pressure and sucks the sewage due to the pressure difference between the squeegee 48 and the sewage tank 7. To store.

When the driver rides on the floor cleaning vehicle 1 constructed as described above and moves from the garage to the work place, or when the vehicle is simply traveling, the sweeping brush 8, the cleaning brush 23 and Squeegee 48, front squeegee 5
Each of No. 1 is pulled up from the floor surface 19 by the lifting cylinders 18, 30, 55, and unnecessary wear and driving force are saved. When reaching the work position, each of the above is grounded on the floor surface 19, and the contact pressure of each is appropriately set by the lifting cylinders 18, 30, 55 in consideration of conditions such as the degree of contamination of the floor surface 19, and the sweep brush. 8 and the cleaning brush 23 are rotated to start the cleaning operation while supplying the cleaning liquid.

In the cleaning by the floor cleaning car 1, since the dust on the floor surface 19 is swept up by the sweeping brush 8 prior to the cleaning, the dust is swirled with the cleaning liquid as in the conventional apparatus to be "sludge-like". A sufficient cleaning effect can be obtained. Since the cleaning brush 23 is rotatably supported on the main shaft 34 by the spherical bearing 36 as described above, even if the floor surface 19 has an inclination or an unevenness, the cleaning brush 23 follows the inclination and the unevenness, and the occurrence of cleaning spots is prevented. . Further, front squeegees 51 are provided immediately in front of the rear wheels 3 on both sides, whereby the sewage is advanced while guiding the sewage toward the center side of the vehicle body 4, so that the rear wheels 3 perform smooth running without slipping and the squeegee Four
The wastewater collected by 8 is sucked into the wastewater tank 7.

The cleaning work by straight running is carried out as described above. Next, the most problematic problem with the conventional apparatus is the recovery of dirty water in the corners when the steering wheel is turned as follows. That is, since the cleaning brush 23 is arranged in front of the rear wheel 3 and the squeegee 48 is arranged in the rear of the rear wheel 3 to reduce the mounting interval between the two, the cleaning brush 23 and the squeegee 48 when the steering wheel is steered.
As shown in FIG. 7B, the transition loci of and are substantially coincident with each other, and it is possible to prevent the recovery leakage of the sewage even in the corner portion where the steering is turned. In this case, it seems that there is a slight recovery leak on the outside of the corner, but since the front squeegee 51 guides the dirty water inward in this part, it is possible to effectively prevent the recovery leak of the dirty water. Since the wheel is steered, the operability of traveling operation can be made extremely excellent even at the corners.

Finally, the replacement of the cleaning brush 23 will be examined. Sweeping brush 8, cleaning brush 23 and squeegee 4
8 and the front squeegee 51 are replaced when they are worn over a certain limit, but the sweeping brush 8 is replaced, the dust box 20 is attached and detached, and the swept dust is discarded.
As shown in the drawings, the cleaning brushes 23 on the left and right sides and the front squeegee 51 and the squeegee 48 can be easily exchanged from the front and rear portions or both sides of the vehicle body 4. However, since the center brush of the cleaning brush 23 is located in the center of the vehicle body 4, it is difficult to replace it as it is.

However, when the cleaning brush 23 in the middle is replaced, the lock pin 38 engaged with the lock hole 42.
Is pulled out from the lock hole 42 against the spring 41 to release the lock, and the pull-out handle 37 is pulled to attach the hanging tool 36A to the hanging plate 2.
When the mounting plate 26 is rotated to the left side of the vehicle body 4 and pulled out while sliding along the arcuate surface 27 of the vehicle body 4 (FIG. 4), the cleaning brush 23 located at the center of the vehicle body 4 is near the left side portion of the vehicle body 4. When the cleaning brushes 2 on both sides are rotated by rotating to the same position as the brush on the left side of the vehicle body of the three cleaning brushes and engaging the lock pin 38 with the lock hole 42a at this position to lock the mounting plate 26.
As in the case of 3, the cleaning brush 23 in the middle can be replaced very easily. When the replacement is completed, the lock pin 38 is locked again in the lock hole 42.
Remove it from a and turn the mounting plate 26 backwards to lock the lock pin 3
By engaging 8 with the lock hole 42, it returns to the old state.

[0021]

As described above, according to the present invention, the cleaning brush is arranged in front of the rear wheel and the squeegee is arranged in the rear of the rear wheel to reduce the distance between the two. Leakage can be prevented, the floor surface can be finished well, and a plurality of disc-shaped cleaning brushes are arranged in front of the rear wheels, so that the floor surface can be efficiently cleaned and the cleaning ability can be increased. Further, even in the case where a plurality of disc-shaped cleaning brushes are arranged on the lower side of the vehicle body in front of the rear wheels, the brush mounting plate is pivotally supported on the suspension board on the lower side of the vehicle body so as to be horizontally rotatable, Since the brush mounting plate is provided with a plurality of disc type cleaning brushes deviated from the center of rotation, the rotation of the brush mounting plate causes the disc type cleaning brush at the center of the vehicle body width to move closer to the side of the vehicle body. The cleaning brush can be moved and the cleaning brush can be replaced very easily.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view.

FIG. 2 is a partial side view showing a mounting state of a cleaning brush with a part omitted.

FIG. 3 is a plan view of FIG.

FIG. 4 is a plan view in which a mounting plate of the cleaning brush is rotated.

FIG. 5 is a partially enlarged view showing a mounting state of a mounting plate.

FIG. 6 is an enlarged sectional view of a lock pin.

FIG. 7 is an explanatory diagram showing a locus of a corner portion between a cleaning brush and a squeegee of a floor cleaning vehicle.

FIG. 8 is an explanatory diagram showing a trajectory of a conventional device.

FIG. 9 is an explanatory diagram showing a trajectory of a conventional device.

[Explanation of symbols]

1 floor cleaning car, 2 front wheels, 3 rear wheels, 30 lifting cylinders, 23 cleaning brushes, 24 suspension boards,
25 parallel links, 26 mounting plates, 36 spherical bearings,
38 lock pin (locking member), 42, 22a lock hole, 48 squeegee

Claims (1)

[Claims] 1. A driver-ride type floor cleaning vehicle equipped with a cleaning brush for cleaning a floor surface with a cleaning liquid and a squeegee for collecting dirty water after cleaning, wherein a squeegee is arranged behind a rear wheel and a rear wheel is provided. A horizontal suspension board is attached to the front side of the vehicle underneath so that the suspension board can move up and down, and a locking member that pivotally supports the brush mounting plate in the horizontal direction and locks the rotation. A floor cleaning vehicle in which a plurality of disc type cleaning brushes are provided side by side in a replaceable manner on a position where the brush mounting plate is deviated from the center of rotation of the brush mounting plate.