JPH0735647B2 - Floor cleaning car - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an improvement of a floor cleaning vehicle for cleaning while supplying a cleaning liquid to a floor surface, and an object thereof is to improve a cleaning effect, and It ensures the recovery of sewage at the corners when steering.

Conventional technologies and problems Floor cleaning vehicles used to clean large floors or large venues by supplying an appropriate amount of cleaning liquid to the floor and cleaning the floor while cleaning the floor are 43-10668 and Japanese Patent Publication No. 46-22393 are known. However, in the above-mentioned conventional technique, when the cleaning unit is attached to the frame for cleaning, the cylindrical cleaning brush is arranged in front of the front wheel and the dirty water sweeping brush is arranged in the rear of the front wheel. If a lot of dust is present, the dust on the floor surface is swirled together with the cleaning liquid by the cleaning brush and becomes a "sludge-like" shape, which takes time to clean the floor surface and dust from the dirty water in the hopper swept up by the sweeping brush. There is a problem that a troublesome work of separating and removing the is required.

Further, the conventional floor cleaning vehicle has a fatal problem of collecting and leaking sewage when the steering wheel is steered at a corner portion. That is, in the above conventional floor cleaning vehicle, the cleaning brush 100 has a cylindrical cleaning brush 100 in front of the front wheels and a squeegee 101 in the rear of the rear wheels (FIG. 8A). When the vehicle body is steered with the rear wheels, the distance between
There is a problem that the locus of the squeegee 101 overhangs to the outside of the corner with respect to the locus of the cleaning brush 100, and a large amount of waste water is collected and leaked inside the corner. Also, since it is a rear-wheel steering, the squeegee is largely moved in the left-right direction at the corners, and the trajectory of the squeegee is always outside the trajectory of the sweep brush, resulting in a considerable deviation between the two trajectories. It was difficult to reliably collect sewage.

Further, conventionally, as shown in FIG. 9A, a disc type cleaning brush 20
Although a device in which 0 is provided in front of the front wheel is also proposed, as in the case of the cylindrical cleaning brush 100, the distance between the cleaning brush 200 and the squeegee 101 becomes large, so the cleaning brush 200
As shown in FIG. 9B, the locus between the squeegee 101 and the squeegee 101 is largely deviated, and there is a problem that recovery leakage occurs in the outer portion of the corner and it is difficult to put it to practical use.

Means for Solving the Problems The present invention is intended to solve the problems of the above-described conventional device, and a cleaning brush for cleaning a floor surface with a cleaning liquid on a driver-ridden vehicle body having front wheels and rear wheels. In a floor cleaning vehicle provided with a squeegee for collecting dirty water after cleaning, the front wheel is steered, the cleaning brush is arranged below the vehicle body between the front wheel and the rear wheel, and the squeegee is located behind the rear wheel. And a sweeping brush capable of sweeping up the dust on the floor in front of the front wheel, and a dust box capable of storing the dust swept up by the sweeping brush is detachably disposed. It is characterized in that cleaning and washing can be efficiently performed at the same time by a single washing car, and that squeegee of about the vehicle width can reliably prevent leakage of waste water at the corners.

Further, the present invention is a three-wheeled vehicle having one front wheel and two rear wheels, and is configured to steer the front wheels and drive the rear wheels, and the front surface capable of sliding contact with the floor surface between the rear wheels on both sides and the cleaning brush. The squeegee is arranged obliquely with respect to the traveling direction so as to guide the sewage in front of the rear wheels to the inside of the vehicle body, and surely prevents the sewage from collecting and leaking at the corners.

Examples The present invention will be described in detail below with reference to the drawings illustrating examples. 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 rotatably supported by a housing 9 that houses the brush, and is rotated clockwise in FIG. 1 by a hydraulic motor (not shown). The housing 9 is vertically movably attached to the vehicle body 4 by parallel links 10 attached to both ends (one side omitted), and an elevating mechanism 11 adjusts vertical movement and contact pressure within a certain range. Reference numerals 12 are L-shaped levers attached to both ends of a pivot 13 pivotally supported on the vehicle body 4,
A connecting rod 14 pivotally attached to one side of 12 is pin-connected to the housing 9 via a long groove 15, and a spring 16 stretched between the other side of the L-shaped lever 12 and the vehicle body 4 attaches the housing 9 in the pulling direction. I am energetic.

Reference numeral 17 denotes an actuating lever mounted at a substantially intermediate point of the pivot shaft 13, and a cylinder 18 is arranged between the actuating lever 17 and the vehicle body 4. The actuation of this cylinder 18 pushes down the housing 9 against the spring 16 to appropriately press it. The sweeping brush 8 is grounded to the floor surface 19 by the contact pressure of, and the cylinder 18 is operated in reverse, so that both the pulling force of the spring 16 and the action of the cylinder 18 bring the housing 9 to a predetermined position. It is adapted to be pulled up to hold the pulled up position. 20 is a dust box, which is detachably attached to the housing 20 by means of a buckle 21 on both sides and a hook member 22 on the upper side,
The dust swept up by the sweeping brush 8 is stored, and when the dust reaches a predetermined amount, it 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 mounted 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 a mounting plate 26 described later. Reference numeral 28 is a relief for allowing mounting of a hydraulic motor 29 described later. 30 is a lifting cylinder attached to the vehicle body 4,
The L-shaped lever 31 pivotally supported on the vehicle body 4 and the connecting rod 32 pivotally attached to the lever are connected to the ribs 33 of the suspension board 24. Therefore, the suspension board 24 moves up and down within a predetermined range by the operation of the elevating cylinder 30. In addition, the contact pressure of the cleaning brush 23, which will be described later, is adjusted appropriately.

Next, the mounting of the mounting plate 26 will be described. 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. The lower end of the main shaft 34 has an arm rod 35.
Is rotatably supported by a free joint composed of a spherical bearing 36 shown in FIG. 5, and a mounting plate 26 is mounted on the arm rod 35. 36A is a hook-shaped suspender fixed to the mounting plate 26.
By hooking the hanging tool 36A on the arc-shaped edge 27 of the hanging board 24, the mounting plate 26 is always held in a substantially horizontal position.
The holding of the mounting plate 26 is not limited to the above, but an arc-shaped long hole is formed in the hanging 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. 37 is a pull-out handle fixed to the mounting plate 26. Reference numeral 38 denotes a lock pin, which is disposed at the tip of the mounting arm 39 extending from the suspension board 24 and has a cylindrical body 40.
6, the lock pin 38 stored in FIG. 6 is urged downward by a spring 41, and is engaged with and disengaged from the lock holes 42, 42a formed in the mounting plate 26, so that the mounting plate 26 is in the working position shown in FIG. It is adapted to be locked in the rotating position shown in FIG.

The disc type cleaning brush 23 is attached to the attachment plate 26 as follows. In this embodiment, three cleaning brushes 23 are used as one set, and two cleaning brushes 23 are used on both the left and right sides of the vehicle body 4 (third side).
In the figure), the other one is located at the center of the above two and slightly rearward of them. This middle cleaning brush
The cleaning area 23 is positioned such that the cleaning area on the peripheral surface overlaps with the cleaning areas of the cleaning brushes 23 on both sides, and is rotatably mounted by the mounting shaft 43 in a state of being suspended from the lower surface of the mounting plate 26. The cleaning width is covered and the cleaning leak between the brushes is prevented. Thus, these three cleaning brushes 23 are driven by a drive mechanism 44 constituted by a gear train from a hydraulic motor 29 installed on the mounting plate 26 so that the cleaning brush 23 on the lower side (left side of the vehicle body) in FIG. Counterclockwise,
The upper cleaning brush 23 is rotated clockwise, and the middle cleaning brush 23 is rotated counterclockwise. 45 is a cleaning liquid supply pipe, which is a liquid volume adjusting valve from the cleaning liquid tank 6 mounted on the vehicle body 4.
Pipes are attached to the mounting shaft 43 of the three cleaning brushes 23 via 46, and an appropriate amount is supplied to the center of the cleaning brush 23 by the gravity drop method from the downflow hole 47 formed in the mounting shaft 43. Similar to the conventional apparatus, 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, Squeegee 48 is attached as follows.
The squeegee 48 has been widely used for floor cleaning vehicles, and various shape configurations have been adopted. In the present embodiment, the squeegee 48 is appropriately selected and used. Is omitted. Squeegee 48 is the rear side (rear) of a rectangular frame 49.
Is attached to the cleaning brush via the mounting shaft 50, and its width is the cleaning brush.
It is set to be approximately equal to or slightly larger than the cleaning width by 23.

Next, 51 is a front squeegee, which is configured by attaching a mounting arm 53 to a mounting shaft 52 provided on the front side of the frame body 49, and attaching a kind of rubber curtain made of hard rubber or the like to the left and right ends of the mounting arm 53. The rear wheels 3 are inclined toward the inside of the vehicle body 4 in front of the rear wheels 3, and guide the dirty water on the floor surface 19 through which the rear wheels 3 pass toward the inside of the vehicle body. Prior to the passage of No. 3, the rear wheel 3 is prevented from slipping by preliminarily removing the contaminated water in that portion. Squeegee 48 and front squeegee 51 as above
The frame 49 to which is attached 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 a pair pivotally attached to the vehicle body 4 (one side omitted)
At one end of the L-shaped lever 54, the squeegees 48 and 51 are placed on the floor 1
It is attached to the frame 49 so that when it is grounded at 9, it is grounded horizontally to the floor surface 19. 55 is a lifting cylinder attached to the vehicle body 4,
The lifting cylinder 55 and the other end of the L-shaped lever 54 are L-links.
56 and a rod 57 that can adjust the stroke
The frame 49 is vertically moved within a predetermined range by the operation of the cylinder 55.

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.
Further, a vacuum pipe 59 connected to the blower 8 is opened in the waste water tank 7, and the air in the waste water tank 7 is sucked by the blower 8 to a negative pressure, and the waste water is sucked due to the pressure difference between the skewer 48 and the waste water tank 7. To store.

While the driver is boarding the floor cleaning vehicle 1 configured as described above and moving from the garage to the work place, or when the vehicle is simply traveling, the sweeping brush 8, the cleaning brush 23, and the fucture 48, Each of the front squeegees 51 is pulled up from the floor surface 19 by the elevating 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 of them 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 vehicle 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 device, so that the "sludge-like" is generated.
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 moves forward while guiding the sewage toward the center of the vehicle body 4, so that the rear wheels 3 perform smooth running without slipping, and the squeegee The waste water collected by 48 is sucked into the waste water tank 7.

The cleaning work by straight running is performed as described above, and the next most problematic problem with the conventional device is the recovery of dirty water in the corner portion 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 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 at 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 wastewater to the inside in this part, it is possible to effectively prevent the recovery leak of the wastewater. 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 considered. Each of the sweeping brush 8, the cleaning brush 23, the squeegee 48, and the front squeegee 51 is replaced when it is worn out beyond a certain limit. However, the sweeping brush 8 is replaced, the dust box 20 is attached and detached, and the swept dust is discarded. , And the cleaning brushes 23 on the left and right sides, and the front squeegee 51 and the squeegee 48 can be easily replaced from the front and rear portions or both sides of the vehicle body 4, as is apparent from the drawings. 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 replacing the cleaning brush 23 in the middle, 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 suspend. When the lower plate 36A is slid along the arc surface 27 of the hanging plate 24 and the mounting plate 26 is rotated to the left side of the vehicle body 4 and pulled out (FIG. 4), the cleaning brush located at the center of the vehicle body 4 23 is rotated to the vicinity of the left side of the vehicle body 4 (approximately the same position as the brush on the left side of the vehicle body among the three cleaning brushes), and at this position, the lock pin 38 is engaged with the lock hole 42a to lock the mounting plate 26. Then, like the cleaning brushes 23 on both sides, the cleaning brush 23 in the middle can be replaced very easily. When the replacement is completed, the lock pin 38 is again pulled out from the lock hole 42a, the mounting plate 26 is reversed, and the lock pin 38 is engaged with the lock hole 42 to restore the old state.

As described above, according to the present invention, the cleaning brush is arranged in front of the rear wheels of the cleaning vehicle for the front wheel steering and the squeegee is arranged in the rear of the rear wheels. The left and right movement of the squeegee can be made small, and the locus of the cleaning brush and the locus of the squeegee can be made substantially the same, and the recovery leakage of the dirty water at the corner can be prevented and the finish of the floor can be improved. Further, a sweeping brush is arranged in front of the front wheel and a dust box is detachably arranged, and dust is collected in the dust box by the sweeping brush and then liquid washed, so that the floor surface is not so dusty. Can be cleaned in a short time with a single cleaning car, and cleaning efficiency can be improved, and dust can be collected in a dry state to improve workability.

In addition, it is a three-wheeled vehicle with one front wheel and two rear wheels and is configured to steer the front wheels, and the sewage immediately before the rear wheels is guided to the center of the vehicle body by the front squeegee, so the rear wheels do not slip. Therefore, there is an effect that the traveling can be performed smoothly and safely and that the recovery leakage of the sewage can be surely prevented without increasing the squeegee.

[Brief description of drawings]

The drawing shows an embodiment of the present invention, FIG. 1 is a side view with a part cut away, FIG. 2 is a partial side view showing a mounting state of a cleaning brush with a part omitted, and FIG. A plan view, 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 the mounting plate, FIG. 6 is an enlarged sectional view of a lock pin, and FIG. 7 is a floor. Explanatory drawing showing the locus of the corner portion between the cleaning brush and the squeegee of the surface cleaning vehicle, FIG. 8 and FIG.
The figure is an explanatory view showing the locus of the conventional device. 1 ... Floor cleaning car, 2 ... Front wheel, 3 ... Rear wheel, 8 ... Sweeping brush, 19 ... Floor surface, 20 ... Dust box, 23 ... Cleaning brush,
48 ... Squeegee, 49 ... Front squeegee

Claims (2)

[Claims] 1. A front-wheel steering vehicle comprising: a driver-ride type vehicle body having front wheels and rear wheels; a floor-cleaning vehicle having a cleaning brush for cleaning the floor surface with a cleaning liquid and a squeegee for collecting dirty water after cleaning. The cleaning brush is arranged between the front wheels and the rear wheels below the vehicle body, and the squeegee is arranged behind the rear wheels. And a dust box capable of accommodating the dust swept up by the sweeping brush is detachably disposed. 2. A front which is a three-wheeled vehicle having one front wheel and two rear wheels and which is configured to steer the front wheels and drive the rear wheels, and is capable of slidingly contacting the floor surface between the rear wheels on both sides and the cleaning brush. The floor cleaning vehicle according to claim 1, wherein the squeegee is arranged obliquely with respect to the traveling direction so as to guide the sewage in front of the rear wheels to the inside of the vehicle body.