JPH01312111A - Floor surface washing car - Google Patents

Abstract

PURPOSE:To prevent collected dirty water from being neglected at an angular section by providing a motor three-wheeler with a front wheel for steering and rear wheels for driving, with the sweeping brush of a cylindrical type in front of the front wheel, the washing brush of a disc type in front of the rear wheels, and a squeegee for collecting the dirty water on the rear side of the rear wheels. CONSTITUTION:On a floor surface washing car 1 with a front wheel 2 for steering and rear wheels 3 for driving, a driving controller, a washing tank 6, a dirty water tank 7, a blower 8, and the like are mounted, and in front of the front wheel 2, the sweeping brush 8 of a cylindrical type is set. On the front side of the rear wheels 3, the washing brush 23 of a disc type is exchangeably fitted, and on the rear side of the rear wheels 3, a squeegee 48 is fitted. As a result, a fitting space between the washing brush 23 and the squeegee 48 can be shortened, and in the case of steering, the moving traces of the washing brush 23 and the squeegee 48 can be permitted to coincide roughly with each other.

Description

[Detailed Description of the Invention] Industrial Application Field The present application relates to an improvement of a floor cleaning vehicle that performs cleaning while supplying a cleaning liquid to a floor surface, and its purpose is to improve the cleaning effect and to This ensures the collection of waste water at a portion of the corner when steering, and also facilitates the replacement of the cleaning brush.

Conventional technology and problems A floor cleaning vehicle that supplies an appropriate amount of cleaning liquid to the floor surface, performs cleaning work while cleaning the floor surface, and is effective for cleaning large halls or event halls with large areas. , for example, Special Public Interest Publication 1973-
No. 22393 and the like are known. However, the above-mentioned conventional technology is rear-wheel drive and rear-wheel steering, so it is difficult to operate the vehicle, and in addition, a cylindrical cleaning brush is provided in front of the front wheels, and a sweeping brush is provided behind the front axle. Since the floor surface is directly cleaned without sweeping up, not only does the cleaning liquid turn the dust on the floor into a sludge-like state, but the dust swept up by the sweeping brush is separated from the sewage in the hopper. Furthermore, it is extremely difficult to dispose of dust from a hopper provided under the vehicle body behind the front axle.

In addition to the above-mentioned drawbacks, the above-mentioned conventional technology also has a fatal defect in that waste water is not collected at a portion of the corner when turning the steering wheel. That is, the above-mentioned conventional technology uses rear wheel steering,
A cylindrical cleaning brush 1 is installed in front of the front wheels of a rear-wheel drive vehicle.
00, the squeegee 101 is attached to the rear side of the rear wheel (Fig. 8A). Since the distance between the two is long, when this is steered, the transition locus of the cleaning brush 100 and the squeegee 101 at a part of the corner will be the 8th. As shown in FIG. B, the squeegee 101 largely protrudes to the outside of the corner, causing collection leakage of wastewater to the inside. Also, although not shown in Fig. 8, since the rear wheels are steered, the squeegee's moving locus is on the outside of the sweeping brush's moving locus, and the two trajectories do not match (the extent to which they deviate is determined by cleaning). (smaller than a brush), sewage collection is not perfect in this respect as well. Furthermore, the cylindrical cleaning brush theoretically cleans while in line contact with the floor surface, so even if you perform operations such as setting the cleaning vehicle at a low speed, the cleaning effect is still satisfactory. I can't get it.

In order to correct the drawbacks of the cylindrical cleaning brush, a floor cleaning vehicle using a cleaning brush in which a plurality of disk-shaped rotating brushes are arranged side by side is also known.

However, in the past, the cleaning brush in the middle part was attached to the front of the front shaft to facilitate replacement, so although the drawbacks of the cylindrical brush can be acknowledged, the leakage of waste water collection is the same as above and needs to be resolved. I can't.

That is, when the plurality of disk-shaped cleaning brushes described above are attached to a rear-wheel drive vehicle body with front wheels steered as shown in FIG. 9A, the trajectories of the cleaning brush 200 and the squeegee 101 are as shown in FIG. 9B. In this case, collection leakage occurs in the outer part of the corner, which is also not practical.

Means for Solving the Problems In view of the drawbacks of the above-mentioned conventional devices, the present application proposes a front-wheel steered, rear-wheel-drive tricycle with a driver riding on the floor cleaning vehicle. A plurality of disc-shaped cleaning brushes are installed in front of the rear wheels to clean the floor surface with cleaning liquid, and a squeegee is installed behind the rear wheels to collect wastewater. In addition to preventing leakage, the cleaning brush can be replaced by connecting the hanging board to the car body with a pin using a pair of parallel links, and connecting it to the lifting cylinder attached to the car body, and then attaching the cleaning brush to the main shaft attached to the hanging board. The plate is rotatably supported by a free joint, and the hanging tool provided on the mounting plate is hooked to the hanging board to hold the mounting plate approximately horizontally, and the lock hole drilled in the mounting plate is A locking pin for engaging and disengaging is provided on the suspension board, and multiple disc-shaped cleaning brushes are attached to the mounting plate, and the cleaning brushes can be easily replaced by rotating the mounting plate to the outside of the vehicle body. This is what I did.

EXAMPLES The present application will be explained in detail below with reference to drawings showing examples. In the drawing, 1 is a floor cleaning vehicle with two front wheels steered and three rear wheels driven. Necessary equipment such as a steering wheel 5 and other operation control devices, a cleaning liquid tank 6, a sewage tank 7, and a blower 8 are mounted on the vehicle body 4. The vehicle is designed to be driven by a driver on board.

In the above description, reference numeral 8 denotes a cylindrical sweeping brush, which is attached to the front of the front shaft 2 in the following manner.

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 attached to the vehicle body 4 so as to be vertically movable by means of parallel links 10 attached to both ends (one side omitted), and the vertical movement within a certain range and adjustment of the contact pressure are performed by an elevating mechanism 11. Reference numeral 12 denotes 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 lever 12 is connected to the housing 9 by a pin via a long groove 15. A spring 16 stretched between the other side and the vehicle body 4 biases the housing 9 in the pulling direction. 1
7 is an operating lever attached to approximately the midpoint of the above-mentioned pivot 13;
A cylinder 18 is disposed between the operating lever 17 and the vehicle body 4, and the operation of this cylinder 18 pushes down the housing 9 against the spring 16, and causes the sweeping brush 8 to be grounded to the floor surface 19 with an appropriate contact pressure. Also, by operating the cylinder 18 in the opposite direction, the housing 9 is pulled up to a predetermined position and held at the raised position by both the tensile force of the spring 16 and the action of the cylinder 18. A dust box 20 is removably attached to the housing 20 with buckles 21 on both sides and a lead wire 22 on the top, and stores the dust swept up by the sweeping brush 8. When the dust reaches a predetermined amount, it is removed and the contents are removed. Discard.

Next, a disk-shaped cleaning brush 23 is installed in front of the rear wheel 3.
This section explains how to install the . Reference numeral 24 denotes a hanging board, and the hanging board is connected to a pair of left and right parallel links 25 provided on both sides of the vehicle body 4.
It is attached as if it were a bridge between them, and is movable up and down with respect to the vehicle body 4.

The rear side edge of the hanging board 24 has an arc shape 27 corresponding to the turning radius of the mounting plate 26, which will be described later, and 28 is a relief to allow attachment of a hydraulic motor 29, which will be described later. be. Reference numeral 30 denotes a lifting cylinder attached to the vehicle body 4, which is connected to the 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 pivoted to the lever. Reference numeral 24 is a cleaning brush 23 which moves up and down within a predetermined range by the operation of an elevating cylinder 30, and which will be described later.
Adjust the contact pressure accordingly.

Next, attachment of the attachment plate 26 will be explained.

Reference numeral 34 denotes a main shaft, which is fixed to the front side of the suspension base plate 24 so as to be substantially aligned with the center of the four widths of the vehicle body.At the lower end of the main shaft 34 is an arm rod 35, which is made up of a spherical bearing 36 as shown in FIG. It is rotatably supported by a free joint, and a mounting plate 26 is attached to this arm rod 35. 36 is a shaped hanging tool fixed to the mounting plate 26, and the hanging tool 36 is connected to the hanging board 2.
By drawing a line on the edge of the arc 27 of 4, the mounting plate 26
is always held in a substantially horizontal position. Note that the posture of the mounting plate 26 is not limited to the above-mentioned method, and the mounting plate 26 can be The structure of the drawer handle 37 is not limited as long as it can be held substantially horizontally. Reference numeral 38 denotes a lock pin, which is disposed at the tip of the mounting arm 39 extending from the hanging board 24, and the lock pin 38 housed in the cylinder body 40 is biased downward in FIG. 6 by a spring 41, and the mounting plate 26 hole drilled at 42.
42a to lock the mounting plate 26 in the working position shown in FIG. 3 and in the rotating position shown in FIG. 4, respectively.

The disk-shaped cleaning brush 23 is attached to the mounting plate 26 as follows.
can be attached to. In this embodiment, three cleaning brushes 26 are used as a set, and two cleaning brushes are used on both left and right sides of the vehicle body 4 (
3), the other one is suspended from the center of the two above-mentioned two pieces a little to the rear side, so that the cleaning areas of the circumferential surface overlap each other, and hangs from the lower surface of the mounting plate 26, and the mounting shaft 43
This allows the brushes to be rotatably mounted, thereby covering a wide cleaning area and preventing cleaning leakage between the brushes. These three cleaning brushes 23 are mounted on the mounting plate 26.
In FIG. 3, the lower cleaning brush 23 (on the left side of the vehicle body) is rotated counterclockwise, the upper cleaning brush 23 is rotated clockwise, and the middle cleaning brush 23 is rotated counterclockwise by a drive unit 44 configured with a gear train from a hydraulic motor 29 installed in the Brush 23 rotates counterclockwise. Reference numeral 45 denotes a cleaning fluid supply pipe, which is piped from the cleaning fluid tank 6 mounted on the vehicle body 4 to the mounting shafts 43 of the three cleaning brushes 23 through the fluid volume adjustment valve 46, and from the flow holes 47 bored in the mounting shaft 43. Although an appropriate amount of cleaning liquid is supplied to the center of the cleaning brush 23 by gravity falling, the purpose can also be achieved by supplying the cleaning liquid to the front side of the cleaning brush 23 using a single shower system, as in the conventional device.

Finally, the squeegee 48 is installed as follows. The squeegee 48 has conventionally been widely used in floor cleaning vehicles, and various shapes and configurations have been adopted, and in this embodiment, the structure of the squeegee 48 itself will be changed. The explanation will be omitted. The squeegee 48 is attached to the rear side of a rectangular frame 49 via a mounting shaft 50, and its width is set to be approximately equal to or somewhat larger than the cleaning rlJ by the cleaning brush 23. ing. Next, 51 is a front squeegee, and a mounting arm 53 is attached to a mounting shaft 52 provided on the front side of the frame 49, and a type of rubber curtain made of hard rubber or the like is attached to both left and right ends of the mounting arm 53.
Each of them is inclined toward the inside of the vehicle body 4, and guides the dirty water on the floor surface 19 where the rear wheels 3 pass toward the inside of the vehicle body, and drains the waste water from that part before the rear wheels 3 pass. The sewage is removed in advance to prevent the rear wheels 3 from slipping. The frame body 49 to which the squeegee 48 and the front squeegee 51 are attached as described above has the squeegee 48 attached to the rear wheel 3.
The front squeegee 51 is attached to the vehicle body 4 so as to be located between the rear wheel 3 and the cleaning brushes 23 on both the left and right sides. That is, the installation is such that one end of a pair of L-shaped levers 54 (one side omitted) pivotally connected to the vehicle body 4 is placed in a horizontal state with the floor surface 19 when the respective squeegees 48 and 51 touch the floor surface 19. Install so that it is grounded. 55 is a lifting cylinder attached to the vehicle body 4, and the lifting cylinder 55 and the L-shaped lever 5 are connected to each other.
4 is connected to the other end of the L link 56 by a rod 57 whose stroke can be adjusted, and the frame body 49 moves up and down within a predetermined range by the operation of the cylinder 55.

Reference numeral 58 denotes a suction pipe for sucking the waste water collected by the squeegee 48, which opens into the waste water tank 7 mounted on the vehicle body 4. A vacuum pipe 59 connected to a blower 8 is opened in the sewage tank 7, and the air inside the sewage tank 7 is sucked by the blower 8 to create a negative pressure. Store within 7.

When the floor cleaning vehicle 1 of the present application configured as described above is moved by a driver from the garage to the work place, or when it is simply traveling, the above-mentioned sweeping and cleaning brushes 8,
23 and Skugee 48. Each of the front squeegees 51 is raised to the floor 19 by means of a lifting cylinder 18.30.55.
This eliminates unnecessary wear and tear and saves driving power. When the work position is reached, each of the above is grounded to the floor 19, and the contact pressure of each is set appropriately by the lifting cylinders 18 and 30.55, taking into consideration conditions such as the degree of contamination of the floor 19, and the sweeping brush is 8 and the cleaning brush 23 to increase the supply of cleaning liquid, the cleaning work is started. Therefore, in the cleaning by the floor cleaning vehicle 1 of the present invention, the dust on the floor 19 is swept up by the sweeping brush 8 before cleaning, so unlike the conventional device, the dust is stirred with a cleaning liquid and the dust is left in the form of "sludge". A sufficient cleaning effect can be obtained without causing any problems. As described above, the cleaning brush 23 is supported on the main shaft 34 by the spherical bearing 36 and is rotatable, so even if the floor surface 19 has an inclination or unevenness, it will follow this and no cleaning spots will occur.

Furthermore, as described above, in the present application, there is a front squeegee 51 just in front of the rear wheels 3, which guides wastewater toward the center of the vehicle body 4 while moving forward, so that the rear wheels 3 can run smoothly without slipping. The sewage collected by the squeegee 48 is sucked into the sewage tank 7.

Cleaning work by straight running is carried out as described above, but the collection of waste water from a part of a corner when the vehicle is turned, which is the most problematic issue with conventional devices, is as follows.

In the present application, as described above, the cleaning brush 23 and the squeegee 48 are disposed in front of the rear wheel 3 and the squeegee 48 is disposed behind the rear wheel 3, so that the distance between the two is shortened, so that the cleaning brush 23 and the squeegee 48 are disposed in front of the rear wheel 3. As shown in FIG. 7B, the transition trajectories are approximately the same as shown in FIG. 7B, and there is no leakage of wastewater collection even in the part of the corner where the steering wheel is turned. It looks like there is a slight recovery leak on the outside of the corner, but this part is caused by the front squeegee 51 mentioned above.
Since the sewage is guided inward, there is virtually no leakage of sewage collection, and the drawbacks of conventional systems around corners have been resolved, and since the front wheels are steered, maneuverability is extremely good even around corners. It is.

Finally, we will consider replacing the cleaning brush 23. The sweeping and cleaning brushes 8 and 23, the squeegee 48, and the front squeegee 51 are replaced when they wear out beyond a certain limit.
As is clear from the drawings, attachment and detachment, disposal of swept up dust, and replacement of the left and right cleaning brushes 23, front squeegee 51, and squeegee 48 can be done from the front and rear of the vehicle body 4 or from both sides. It can be done easily.

However, since the middle brush of the cleaning brush 23 is located in the center of the vehicle body 4, it is difficult to replace it as is. Therefore, when replacing the middle cleaning brush 23, 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 drawer handle 37 is pulled to hang it. The tool 36 is attached to the arc surface 2 of the hanging plate 24.
When the mounting plate 26 is rotated to the left side of the car body 4 and pulled out while sliding along the car body 4 (Fig. When the mounting plate 26 is locked by engaging the lock pin 38 with the lock hole 42a at this position, it can be replaced very easily like the other cleaning brushes. I can do it. When the replacement is completed, pull out the lock pin 38 from the lock hole 42a again, rotate the mounting plate 26 in the opposite direction, and
By engaging the lock pin 38 with the lock hole 42, the original state is restored.

Effects of the Invention The present application utilizes the arrangement order and arrangement position of the sweeping brush, cleaning brush, and squeegee detailed above, and the mounting mechanism of the cleaning brush, by directly cleaning the floor surface without sweeping up the floor surface as in the conventional device. This not only makes it easier to dispose of the dust stored in the dust box, but also improves operability, and solves the fatal problem with conventional equipment, which is the leakage of sewage collection at some corners. Furthermore, it is an extremely useful invention that satisfies all the requirements for a floor cleaning vehicle by making it easy to replace the cleaning brush.

[Brief explanation of the drawing]

The drawings show an embodiment of the present application, and FIG. 1 is a partially cutaway side view, FIG. 2 is a partially cutaway side view showing the cleaning brush installed, and FIG. 3 is a plan view of FIG. 2. , Fig. 4 is a plan view of the cleaning brush mounting plate rotated, Fig. 5 is a partially enlarged view showing the mounting state of the mounting plate, Fig. 6 is an enlarged sectional view of the lock pin, and Fig. 7 is the floor surface of the present application. Explanatory diagrams showing the locus of part of the corner of the cleaning brush and squeegee of the cleaning car, Figures 8 and 9
The figure is an explanatory diagram showing the trajectory of another device. 1. Floor cleaning vehicle, 2. Front wheel, 3. Rear wheel, 8. Sweeping brush, 11. Lifting mechanism, 18.30.55. Lifting cylinder, 23. Washing brush, 24. hanging board,
25... Parallel link, 26... Mounting plate, 29 Hydraulic motor, 36... Spherical bearing, 38... Lock pin,
42.22a...Lock hole, 48...Scugee, 49
front squeegee

Claims (1)

[Scope of Claims] 1. In a front-wheel steering, rear-wheel-drive tricycle with a driver on board, a cylindrical sweeping brush is placed in front of the front wheels, and a cleaning liquid is placed in front of the rear wheels. This floor cleaning vehicle is equipped with a plurality of disk-shaped cleaning brushes for cleaning the floor surface, and a squeegee for collecting waste water behind the rear wheels. 2. Attach the hanging board to the vehicle body using a pair of parallel links so that it can move up and down, and connect it to the lifting cylinder attached to the vehicle body, and attach the cleaning brush mounting plate to the lower end of the main shaft fixed to the hanging board using a free joint. The mounting plate is movably pivoted, and a hanging tool provided on the mounting plate is hooked to the hanging board to hold the mounting plate substantially horizontally, and a lock pin is engaged and disengaged from a lock hole drilled in the mounting plate. A floor cleaning vehicle that is provided on a hanging board and has a plurality of disc-shaped cleaning brushes attached to the mounting plate.