JP3044917B2 - Floor sweeper - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor cleaning vehicle for cleaning floors, roads and the like (hereinafter simply referred to as floors).

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 6, dust is swept up by rotation of a main brush 51 which rotates at the bottom of a floor cleaning truck. This dust is collected in the dust box 52 through the opening 53 of the dust box 52 in the floor cleaning truck. A rubber lip 54 is attached to the bottom plate 52a of the dust box 52 near the opening 53.
Is attached and fixed. The tip of the lip 54 comes into sliding contact with the floor surface. The dust on the floor is
The main brush 51 is taken into a main brush chamber 55 in which the main brush 51 is disposed while being bent under the lip 54 while bending the end of the brush 4.

[0003]

However, as shown in FIG. 7, in the case of large dust, the lip 54 cannot bend just enough to allow the passage of the dust. Therefore, there is a problem that large dust cannot be taken into the main brush chamber 55.

[0005] As shown in FIG. 5 , light dust such as fallen leaves cannot deflect the lip 54, and is pressed well by the lip 54. Therefore, there is a problem that light dust such as fallen leaves cannot be taken into the main brush chamber 55.

The present invention was made to solve the above problems, and its object is to provide a floor sweeper can be collected in large dust and light dust also in reliably dust box It is in.

[0006]

According to the first aspect of the present invention, dust on a floor surface is swept up by rotation of a main brush provided on a vehicle bottom, and the dust is removed from a dust box. in through the opening floor sweeper collected in the dust box, Rutotomoni provided the floor and sliding contact lip in the vicinity of the opening portion of the dust box rotatably, sliding contact position the lip on the floor A rotating mechanism for rotating to a position away from the floor surface ,
Automatically according to the state of dust taken in through the lip
An automatic driving means for driving the motor is provided. Also, in claim 2
In the invention described in the above, the floor cleaning vehicle according to the first aspect is provided.
Drive the rotation mechanism based on the operation of the operation means.
A manual driving means is further provided for driving the rotation mechanism;
Drive by the automatic drive means and the manual drive
Switching means for switching between driving by the moving means is provided.

[0007]

According to the first aspect of the present invention,
Of the dust taken in through the lip by the
Automatically adjusts the gap between the lip and the floor according to the condition
Is done. This ensures that large and light dusts are
Collected in a dust box. It also responds to dust conditions.
The gap is automatically adjusted,
Is easy to do. Further, according to the invention described in claim 2,
For example, when the rotating mechanism is driven by the auto driving means,
Has the above effect. In addition, the manual
When switching to driving of the rotating mechanism by the
Adjust the gap between the lip and the floor surface based on the operation of
Can be adjusted. This makes it cluttered on the floor
The gap between the lip and the floor depending on the dust situation
Automatically when the adjustment of the
Dust collection
Ability is enhanced.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will now be described with reference to FIGS.
A description will be given based on FIG. As shown in FIG. 1, a substantially L-shaped dust box 2 is rotatably provided on a front side of a floor cleaning truck 1 by a drive cylinder (not shown). The dust box 2 has an opening 3 formed therein. A dust cover 4 having an opening 3 side and a floor surface side is provided at the bottom of the floor cleaning truck 1. The side plate 4a and the rear plate 4b of the dust cover 4 are provided with a lip 5 that is in sliding contact with the floor surface.

A main brush chamber 6 is formed inside the dust cover 4, and a main brush 7 is rotatably disposed in the main brush chamber 6. The main brush 7 rotates so as to be in sliding contact with the floor surface, and the main brush chamber 6 rotates.
The dust taken into the inside is swept up, and the swept up dust is collected in the dust box 2 through the opening 3 of the dust box 2. Also, the lip 5 provided on the side plate 4a and the rear plate 4b of the dust cover 4 prevents the dust taken into the main brush chamber 6 from being released to the outside.

The dust box 2 can be moved up and down by a drive cylinder (not shown). When the drive cylinder is extended, the dust box 2 rises and the dust collected in the dust box 2 can be discharged. It has become. Then, when the drive cylinder contracts, the dust box 2 descends, and the dust swept up by the main brush 7 can be swept into the dust box 2.

The dust box 2 near the opening 3
The support pieces 8 are erected and fixed on both sides in the width direction of the bottom plate 2a. A support shaft 9 is rotatably inserted into and supported by the support piece 8. A rotating plate 10 extending in the vehicle width direction of the floor cleaning vehicle is fixed to the support shaft 9. A rubber lip 11 extending in the vehicle width direction of the floor cleaning vehicle is attached and fixed to the tip side (floor side) of the rotating plate 10. When the rotating plate 10 rotates about the support shaft 9,
When the tip of the lip 11 separates from the floor, the lip 1
A gap is formed between 1 and the floor surface.

The dust box 2 near the opening 3
The connection piece 12 is fixed upright at one corner of the top plate 2b, and a hydraulic cylinder 13 as a rotating mechanism is swingably connected to the connection piece 12 by a pin 14.
The piston rod 13 a of the hydraulic cylinder 13 is connected to a connecting piece 15 provided on the rotating plate 10 via a pin 16. Therefore, the rotation plate 10 is moved by the expansion and contraction of the piston rod 13a in the hydraulic cylinder 13.
Rotates about the support shaft 9 and the lip 11 comes into contact with and separates from the floor surface. Therefore, the interval of the gap formed between the lip 11 and the floor surface is adjusted.

Next, a hydraulic control circuit for driving the hydraulic cylinder 13 will be described. A pair of connecting pipes 18a and 18 are provided from a hydraulic oil supply device 17 provided in the floor cleaning truck 1.
b has been derived. The connecting pipe 18a is connected to the piston head chamber 19a of the hydraulic cylinder 13, and the connecting pipe 18b is connected to the piston rod chamber 19 of the hydraulic cylinder 13.
b.

The hydraulic oil supply device 17 is connected to a hydraulic control device 20 and is controlled by the hydraulic control device 20. A pressure sensor 21 is mounted in the piston head chamber 19a of the hydraulic cylinder 13 so as to face the piston 13b, and the pressure sensor 21 is connected to the hydraulic control circuit 20. Furthermore,
The hydraulic control circuit 20 has a manual mode and an automatic mode.
Mode switch as switching means that can switch between
A switch 22 and an operation lever 23 as operation means are connected to each other. In this embodiment, the hydraulic oil supply
Supply device 17, hydraulic control device 20, pressure sensor 21, etc.
More automatic driving means, and a hydraulic oil supply device
17 and manual drive means by hydraulic control device 20 and the like
Is configured.

When the automatic mode is set by the mode changeover switch 22, the hydraulic control device 20 controls the hydraulic cylinder 13 to switch the hydraulic oil supply device 17
, The hydraulic cylinder 13 is automatically controlled. That is, usually, the lip 1
1 comes into sliding contact with the floor surface, and at this time, the hydraulic control device 20
Are connected to the connecting pipes 18a and 18 from the operating oil supply device 17.
The piston 13b of the hydraulic cylinder 13 is stopped at the neutral position by supplying or recovering the oil through the b.

When dust comes into contact with the lip 11,
The lip 11 and the rotating plate 10 are about to rotate counterclockwise about the support shaft 9. At this time, the piston rod 1
3a is about to extend, so the piston head chamber 19a
Changes in the direction of decreasing pressure. The pressure change at this time is detected by the pressure sensor 21, and the hydraulic control device 20 extends the piston rod 13 a of the hydraulic cylinder 13 via the hydraulic oil supply device 17 based on the detection signal. For this reason, the rotating plate 10 and the lip 11 rotate counterclockwise, and the gap formed between the lip 11 and the floor surface is adjusted.

When the dust ceases to come into contact, the rotating plate 10 and the lip 11 rotated counterclockwise rotate clockwise by their own weight. Then, the piston rod 13a tends to shrink, the piston heads
The pressure in the de chamber 19a is changed in the increasing direction. The pressure change at this time is detected by the pressure sensor 21, and the hydraulic control device 20 contracts the piston rod 13 a of the hydraulic cylinder 13 via the hydraulic oil supply device 17 based on the detection signal. Therefore, the rotating plate 10 and the lip 11 rotate clockwise, and the tip of the lip 11 contacts the floor surface. Then, the contracting operation of the piston rod 13a stops, and the pressure change in the piston head chamber 19a stops.
This is detected by the pressure sensor 21, and the hydraulic control device 20 stops the supply of the hydraulic oil to the piston rod chamber 19b via the hydraulic oil supply device 17 based on the detection signal.

Further, when the manual mode is set by the mode changeover switch 22, the hydraulic control device 20
Is a hydraulic oil supply device 1 based on the operation amount of the operation lever 23.
7, the piston rod 13a of the hydraulic cylinder 13 is made to expand and contract. Therefore, when the operating lever 23 is operated in the opening direction, the piston rod 13a of the hydraulic cylinder 13 extends, and the rotating plate 10 and the lip 1
Since 1 rotates in the counterclockwise direction, the gap between the lip 11 and the floor surface is increased.

Conversely, when the operating lever 23 is operated in the closing direction, the piston rod 13a of the hydraulic cylinder 13 contracts, and the rotating plate 10 and the lip 11 rotate clockwise. It comes into sliding contact with.

Next, the operation of the floor cleaning vehicle configured as described above will be described. First, the mode switch 2
2 is set to the auto mode, and the floor cleaning truck 1 is moved forward while the main brush 7 is rotated. In this state,
As shown in FIG. 2, when dust such as a relatively large stone contacts the lip 11, the dust presses the lip 11.
Then, the lip 11 and the rotation plate 10 try to rotate counterclockwise about the support shaft 9. Therefore, the piston rod 13a of the hydraulic cylinder 13 tends to extend. At this time, since the pressure in the piston head chamber 19a decreases, the pressure sensor 21 detects this decrease in pressure.

The hydraulic control device 20 controls the operation of the hydraulic oil supply device 17 based on the detection signal of the pressure sensor 21. That is, the hydraulic control device 20 controls the hydraulic oil supply device 17, and controls the piston head chamber 19a via the connection pipe 18a.
To the piston rod chamber 19b
Is collected via the connection pipe 18b. for that reason,
The piston rod 13a extends, and the rotating plate 10 and the lip 11 rotate counterclockwise about the support shaft 9. Therefore, the tip of the lip 11 is separated from the floor surface to form a gap, and the gap becomes large.

For this reason, large dust particles are transferred to the main brush chamber 6.
The large dust is swept up by the main brush 7. Therefore, large dust is collected in the dust box 2 through the opening 3.

When large dust is taken into the main brush chamber 6 and the dust does not come into contact with the lip 11,
The rotating plate 10 and the lip 11 rotated counterclockwise tend to rotate clockwise by their own weight. At this time, since the piston rod 13a is about to contract, the pressure on the piston head chamber 19a side increases, and the pressure sensor 21 detects this increase in pressure.

The hydraulic control device 20 controls the operation of the hydraulic oil supply device 17 based on the detection signal of the pressure sensor 21. That is, the hydraulic control device 20 controls the hydraulic oil supply device 17, and controls the piston head chamber 19a via the connection pipe 18a.
While collecting the hydraulic oil of the piston rod chamber 19b.
Is supplied through a connection pipe 18b. for that reason,
The piston rod 13a contracts, and the rotating plate 10 and the lip 11 rotate clockwise about the support shaft 9. Therefore,
The tip of the lip 11 comes into contact with the floor and slides.

When the tip of the lip 11 comes into contact with the floor, the contraction of the piston rod 13a stops, so that the pressure in the piston head chamber 19a does not change. This is detected by the pressure sensor 21, and based on this detection signal, the hydraulic control device 20 stops the supply of the hydraulic oil to the piston rod chamber 19 b via the hydraulic oil supply device 17. Therefore, the tip of the lip 11 is held so as to slide on the floor.

Similarly, light dust such as fallen leaves is applied to the lip 11
When the lip 11 is pressed and gathered to some extent, the lip 11 is pressed by the dust. By this pressing, the rotating plate 10 and the lip 11 try to rotate counterclockwise, and the piston rod 13a of the hydraulic cylinder 13
Trying to elongate. The distortion based on the pressure change at this time is detected by the pressure sensor 21, and the hydraulic control device 20 adjusts the gap of the gap formed between the lip 11 and the floor via the hydraulic oil supply device 17. As a result, light dust such as fallen leaves can be easily taken into the main brush chamber 6. The dust taken into the main brush chamber 6 is swept up by the main brush 7 and can be collected in the dust box 2.

On the other hand, when the lip 11 is manually rotated, the mode changeover switch 22 is set to the manual mode and the operation lever 23 is set to the closed position.
Then, the floor cleaning truck 1 is moved forward while the main brush 7 is rotated. In this state, the operation lever 23 is operated according to the size of the dust on the floor. That is, FIG.
As shown in the figure, if the dust on the floor presses the lip 11 to deflect the tip of the lip 11, the dust can be taken under the lip 11 and taken into the main brush chamber 6. The vehicle travels without operating the operation lever 23.

As shown in FIG. 4, when large dust such as stones or light dust such as paper is on the floor, the operation amount of the operation lever 23 in the opening direction is increased. Then, the hydraulic control device 20 controls the hydraulic oil supply device based on the operation amount of the operation lever 23 in the opening direction. That is, the hydraulic control device 20 controls the hydraulic oil supply device 17 and
The hydraulic oil is supplied to the third piston head chamber 19a via the connection pipe 18a based on the operation amount of the operation lever 23 in the opening direction, and the hydraulic oil in the piston rod chamber 19b is recovered via the connection pipe 18b.

Therefore, the piston rod 13a extends by an amount based on the operation amount of the operation lever 23. Therefore,
The rotation plate 10 and the lip 11 largely rotate counterclockwise about the support shaft 9 to increase the gap between the lip 11 and the floor. Then, large dust is taken into the main brush chamber 6 from this gap. As a result, large dust is swept up by the main brush 7 and collected in the dust box 2 through the opening 3.

When large dust is lost on the floor,
If the operation lever 23 is rotated in the closing direction, the hydraulic cylinder 1
The third piston rod 13a contracts, and the rotating plate 10 and the lip 11 rotate clockwise about the support shaft 9. As a result, the tip of the lip 11 can be slid while being grounded to the floor surface.

Therefore, by providing the lip 11 provided on the bottom plate 2a of the dust box 2 in a rotatable manner, large dust and light dust such as fallen leaves can be easily taken into the main brush chamber 6 and the main brush chamber 6 can be reliably secured. By the brush 7 being swept up, it can be collected in the dust box 2 through the opening 3.

As a result, it is possible to prevent dust from being left behind by the floor cleaning truck, and to improve the cleaning ability. In the present embodiment it has been controlled so as to stretch the piston rod 13a on the basis of the pressure change in the piston head chamber 19a of the hydraulic cylinder 13, the piston f
A pressure sensor which detect the pressure in the head chamber 19a and the piston rod chamber 19b provided, hydraulic fluid as the pressure in the piston head chamber 19a and the piston rod chamber 19b based on the detection signal from the pressure sensor becomes equal to each other It is also possible to control so as to supply and recover.

Further, an electric cylinder can be used instead of the hydraulic cylinder 13. In this case, a strain gauge sensor may be attached to the piston rod of the electric cylinder, and expansion and contraction control of the piston rod may be performed based on a detection signal from the strain gauge sensor.

In addition, the size of the dust is detected by an optical sensor for detecting the condition of the road surface, and the gap between the lip 11 and the floor is adjusted based on the detection signal. It is also possible to configure.

[0035]

[0036]

[0037]

As described in detail above, according to the first aspect,
According to the invention, large dust and light dust can be reliably dusted.
Can be collected in a box and through the lip
The gap is automatically adjusted according to the state of dust
So they can be easily collected.
You. According to the second aspect of the present invention, the powder is dispersed on the floor surface.
Between the lip and the floor depending on the dust situation
Automatic adjustment of the gap and operation of the operating means
It can be used properly when performing
Collecting ability can be improved.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a configuration for controlling rotation of a lip provided on a floor cleaning truck according to the present invention.

FIG. 2 is an explanatory diagram showing that a gap between a lip and a floor surface is adjusted based on a detection signal of a pressure sensor in a state of an auto mode so that large dust can be taken in;

FIG. 3 is an explanatory diagram illustrating that dust is taken into a main brush chamber by bending a lip in a manual mode state.

FIG. 4 is an explanatory view showing that the gap between the lip and the floor is adjusted based on the operation of the operation lever in the manual mode, and large dust can be taken in;

FIG. 5: Light dust such as fallen leaves is removed by a conventional floor cleaning truck.
Indicates that the main brush cannot be taken into the room
FIG.

FIG. 6 is an explanatory view illustrating that dust is taken into a main brush chamber by a conventional floor cleaning truck.

FIG. 7 is an explanatory view showing that large dust such as stones cannot be taken into the main brush chamber by the conventional floor cleaning truck.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Floor cleaning truck (vehicle), 2 ... Dust box, 3 ... Opening, 7 ... Main brush, 11 ... Lip, 13 ... Hydraulic cylinder which comprises a rotation mechanism

Claims (2)

(57) [Claims] 1. A floor cleaning truck that sweeps up dust on the floor by rotating a main brush provided on a vehicle bottom and collects the dust in the dust box through an opening of the dust box. Rutotomoni provided with the floor surface and the sliding contact lip around part rotatably, a rotating mechanism for rotating said lip to a position away from the position and the floor surface in sliding contact with the floor surface, through the lip Dust shape taken in
A floor sweeper equipped with auto-drive means that automatically drives according to the state . 2. The method according to claim 1, wherein the rotation mechanism is operated based on an operation of an operation means.
Manual driving means for driving the
The mechanism is driven by the automatic driving means and the
Switching means for switching between driving by the manual driving means
The floor cleaning truck according to claim 1 provided.