JP2003074027A - Cleaning vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cleaning vehicle capable of constantly carrying out suitable cleaning irrespective of a traveling direction even with a single brush. SOLUTION: A cleaning means 21 is provided in a lower part of a vehicle body 2. A body 22 of the cleaning means 21 is rotatably attached to a body 2 side via a longitudinal shaft 23. A cleaning work part 30 having a rotatable brush 32 via a transverse shaft 31, and a ground contacting wheel body 26 are provided in a body 22 side. The body 22 is composed so as to rotate via the longitudinal shaft 23 during traveling so that the brush 32 is positioned in a traveling direction side. Since the transverse shaft 31 can be positioned orthogonally to the traveling direction, cleaning by pressing the brush 32 against a floor face Y can be carried out without applying biased frictional resistance force to the brush 32. Easy damage of the brush 32 can be prevented and suitable cleaning can be constantly carried out irrespective of the traveling direction even when there is only a single brush.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning vehicle used for cleaning a floor surface in a factory, for example.

[0002]

2. Description of the Related Art Conventionally, as a cleaning vehicle of this type, a forklift, for example, disclosed in Japanese Utility Model Laid-Open No. 56-154409 is provided. In this conventional configuration, a rotary brush cleaner is installed between the front wheels and the rear wheels and in the space existing under the chassis. The brush of the rotary brush cleaning device is in contact with the floor surface, and is configured to rotate via a rotary shaft in the vehicle width direction due to friction with the floor surface caused by traveling of the forklift. In addition, as a means for forcibly rotating the brush and the rotating brush, there is a utility model of Shokai 56-154410.
Japanese Patent Laid-Open No. 10-59,
For example, a cleaning device for an industrial vehicle disclosed in Japanese Patent No. 695 is provided.

[0003]

However, in any of the above-described conventional configurations, the brush and the rotating brush are fixed to the chassis and the lower portion of the vehicle body at a low position through the rectangular box-shaped main body. It is provided. Therefore, when turning, etc., the rotating shaft is tilted with respect to the traveling direction of the vehicle body, and as a result, uneven frictional resistance acts on the brush and rotating brush, making them more susceptible to damage and further cleaning. Can not do enough. See also Kaikai 56-154410
According to the publication, cleaning is possible both when moving forward and when moving backward, but in this case, a pair of brushes and rotating brushes must be provided in front and rear.

Therefore, an object of the present invention of claim 1 is to provide a cleaning vehicle which can always perform a suitable cleaning regardless of the traveling direction even though the number of brushes is one.

[0005]

In order to achieve the above-mentioned object, a cleaning vehicle according to claim 1 of the present invention is provided with a cleaning means at a lower part of a vehicle body, and the main body of the cleaning means has a longitudinal axis. It is rotatably attached to the vehicle body side via a cleaning work unit having a brush that is rotatable via a lateral axis and a grounding wheel body. The brush is configured to be rotated via a vertical axis so that the brush is positioned on the direction side.

Therefore, according to the first aspect of the present invention, the floor surface can be cleaned by operating the cleaning means during traveling. That is, in the cleaning means, the ground wheel is brought into contact with the floor surface to bring the brush into pressure contact with the floor surface.
In this state, the cleaning work unit is driven to forcibly rotate the brush in a predetermined rotation direction. As a result, the brush that is driven and rotated is brought into contact with the floor surface, so that dust (such as dust) on the floor surface can be scraped up and collected. At that time,
By rolling the grounding wheel on the floor surface, the pressure contact posture of the brush with respect to the floor surface can be maintained.

In such a cleaning operation, when the vehicle is swung to the left and right, the main body is swung around the longitudinal axis, so that the lateral axis can be orthogonal to the turning direction.
When the vehicle is running backwards,
The brush can be rotated through 0 degrees, so that the brush is positioned on the backward traveling side, and the lateral axis can be orthogonal to the backward traveling direction. As a result, the cleaning can be performed by pressing the brush against the floor surface during turning and traveling backward without applying a biased frictional resistance force to the brush.

The cleaning vehicle according to claim 2 of the present invention is
In the above-mentioned configuration according to claim 1, the brush and the grounding wheel are separately arranged with the longitudinal axis in the center, and the center of gravity on the main body side is displaced to the grounding wheel side. It is a feature.

Therefore, according to the second aspect of the present invention, the center of gravity is located behind the vertical axis, and the ground wheel is located behind the center of gravity, so that when the vehicle is turned left and right, the main body is rotated along the vertical axis. Can be automatically rotated around. Also, when the vehicle is running in reverse, the body can be automatically rotated about the longitudinal axis by 180 degrees.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below.
The state adopted in a forklift will be described with reference to the drawings.

2 and 3, a forklift 1 which is an example of a cleaning vehicle is provided with a pair of left and right front wheels (driving wheels which do not turn in relation to the vehicle body 2) 3 at the front portion of the vehicle body 2. , A pair of left and right rear wheels (redirecting wheels) 4 at the rear
Is provided, and a driver's seat 5 is provided above the front of the vehicle body 2. A vertically movable mast 6 is attached to the front end of the vehicle body 2 so as to be rotatable in the front-rear direction via a connecting shaft 7 in the vehicle width direction, and a tilt cylinder 8 for rotating the front-rear direction is provided. It is provided between the vehicle body 2 and the mast 6.

The mast 6 is composed of a pair of left and right outer frames 9 on the forklift 1 side, and a pair of left and right inner frames 10 which are guided by the outer frames 9 and can freely move up and down, and the outer frame 9 and the inner frame 10. A lift cylinder 11 is provided between them. In addition, a lift bracket 1 that can be raised and lowered by being guided to the inner frame 10 side
2 is provided, and a pair of left and right forks 13 is provided on the lift bracket 12 via a pair of upper and lower finger bars.

The driver's seat 5 is provided with a seat 15, a steering wheel 16 located in front of the seat 15, and the like.
A head guard 17 is arranged above the vehicle body 2 through a front pipe and a rear pipe standing upright. Further, a counterweight 18 is provided on the vehicle body 2 behind the seat 15.

1 to 4, a cleaning means 21 is provided below the vehicle body 2, and a main body 22 of the cleaning means 21 is provided.
Is rotatably attached to the vehicle body 2 side via a vertical shaft 23. That is, the main body 22 of the cleaning means 21 is in the shape of a flat box, and the vertical axis 23 is located at the center portion in the left-right direction (vehicle width direction) and at a position closer to one side in the front-back direction (vehicle length direction). It is installed upright. The upper portion of the vertical shaft 23 is rotatably supported on the vehicle body 2 side via a bearing 24.

A cleaning unit 30 is provided on the main body 22 side. That is, in the main body 22, a brush 32 is rotatably provided at a position on the one side (front side) with respect to the vertical axis 23 via a horizontal axis 31, where the horizontal axis 31 is a bearing. It is rotatably supported on the main body 22 side via 33.

A brush drive unit (motor or the like) 34 is provided in the main body 22 at a position closer to the other side (rear side) with respect to the vertical shaft 23, and the brush drive unit 3 is provided.
The output shaft 4 and the lateral shaft 31 are interlockingly connected via a winding transmission mechanism 35 arranged on one side.
At that time, the brush rotation direction Z is set so as to come into contact with the floor surface Y toward the front and then from the upper side to the rear side.

Further, the brush 32 and the brush driving unit 3
The brush 32 is provided in the central portion of the main body 22 between the brush 32 and
A dust box 36 is provided which can receive the dust W that has been scooped up and discharged from the upper part to the rear through an opening 36a formed in the front part. On the rear side of the dust box 36, a lateral flow passage 39 is formed by the mesh plate 37 and the partition plate 38, and a filter portion 40 is integrally provided so as to communicate with the other side portion of the flow passage 39. The filter unit 40 is provided with a filter 41.

A fan 42 is provided facing the opening 40a formed in the filter section 40, and
A fan drive unit (motor or the like) 43 for driving the fan 42 is provided adjacent to the brush drive unit 34. It should be noted that the discharge port 44 is provided in the fan driving section 43.
Are formed. An example of the cleaning work unit 30 is configured by the above 31 to 44 and the like.

A ground wheel 26 is provided on the side of the main body 22. That is, the support member 27 is continuously provided rearward from both left and right sides at the other end (rear end) of the main body 22, and the caster-type ground wheel 26 is provided on the lower surface side of each of the support members 27. Has been.

The cleaning means 2 is constituted by the above 22 to 44.
1 example is configured. Here, in the cleaning means 21, the brush 32 is located on the one side of the short length with the vertical axis 23 in the middle, and the drive portions 34, 43 and the filter portion 40 are provided.
The grounding wheel body 26 and the like are located on the other side of the long side, so that the center of gravity position G on the main body 22 side is displaced to the grounding wheel body 26 side with respect to the longitudinal axis 23. Thereby, the main body 22 is automatically rotated via the vertical shaft 23 so that the brush 32 is located on the traveling direction side during traveling.

The operation of the above embodiment will be described below. Forklift 1 is seat 15 of driver's seat 5
By operating the handle 16 by the operator sitting at, the front wheels 3 can be driven in the forward and reverse directions to move forward and backward. By operating the lift lever to operate the lift cylinder 11, the fork 13 can be moved up and down along the mast 6 via the lift bracket 12 and the like, and thus the desired fork work can be performed. By operating the tilt lever 8 by operating the tilt lever, the mast 6 can be rotated (tilted) around the connecting shaft 7, and thus the attitude of the fork 13 can be changed via the lift bracket 12 or the like. .

During the traveling motion described above, the steering wheel 16 is turned in accordance with the steering operation. That is, for example, forward traveling X
At the time of a, by turning the handlebar 16 to the left, the rear wheels 4 can be turned to make a left turn. Similarly, by turning the steering wheel 16 to the right, the rear wheels 4 can be turned to make a right turn.

For example, the floor surface Y can be cleaned by operating the cleaning means 21 during the forward traveling Xa as described above. That is, in the cleaning means 21, as shown in FIG.
As shown in FIG. 2, the ground wheel 26 is brought into contact with the floor surface Y and the brush 32 is brought into pressure contact with the floor surface Y.

In such a state, the brush drive section 34 and the fan drive section 43 are driven and rotated by the switch operation on the driver's seat 5. Then, the brush driving unit 3
The driving torque of the output shaft in FIG.
5 to the transverse shaft 31 so that the brush 32 can be forced to rotate in the predetermined rotational direction Z. Further, the fan 42 can be forcibly rotated by the driving torque of the output shaft of the fan drive unit 43, which causes a discharge flow from the filter 41 to the discharge port 44 and also from the dust box 36 as shown in FIGS. A suction flow is generated through the flow path 39 to the filter section 40.

Therefore, when the brush 32 that is driven and rotated contacts the floor surface Y toward the front,
The dust W (dust etc.) on the floor surface Y is scraped up, and the dust W discharged from the upper part to the rear can be received by the dust box 36 through the opening 36a. The floating dust in the dust box 36 is
To the mesh plate 37, the flow path 39, and the filter section 40 from the filter section 40, and the discharge flow from the filter section 40 to the opening section 40a. The discharge flow is discharged through the discharge port 44.

The above cleaning work is performed, for example, while the forklift 1 is traveling forward Xa. At that time, the ground wheel 26 rolls on the floor surface Y,
The pressure contact posture of the brush 32 with respect to the floor surface Y can always be favorably maintained.

Further, in the cleaning operation by the forward traveling Xa, as shown in FIG.
When turning Xb to the right with the
The center of gravity position G is behind 3 and the ground wheel 26 is behind the center of gravity G.
It is possible to automatically rotate around, so that the lateral axis 31 is orthogonal to the direction of the turning traveling Xb.

As a result, the brush 32 in the turning traveling Xb can be cleaned by pressing it against the floor surface Y without applying a biased frictional resistance force to the brush 32.
2 is less likely to be damaged, and cleaning is always suitable.
The same applies to the turning traveling Xb to the left.

Further, for example, when the forklift 1 is moved backward Xc, the main body 22 is automatically rotated around the longitudinal axis 23 to the right or left over 180 degrees, so that FIG.
As shown in, the brush 32 is positioned on the side of the backward traveling Xc, and the lateral axis 31 with respect to the direction of the backward traveling Xc.
Can be orthogonal. As a result, the brush 32 in the backward traveling Xc is pressed against the floor surface Y for cleaning.
This can be done without applying a biased frictional resistance force to the brush 32, so that the brush 32 is less likely to be damaged and cleaning can always be suitably performed.

As described above, although the brush 32 is a single brush, the forward traveling Xa, the turning traveling Xb, the backward traveling Xc, etc.
Regardless of the traveling direction, the brush 32 can be less likely to be damaged, and suitable cleaning can always be performed.

In the above-described embodiment, the cleaning vehicle is of the type in which the cleaning means 21 is incorporated in the forklift 1. According to this, for example, cargo handling work and cleaning work inside and outside a building (factory) are performed. , Simultaneously or separately. However, the cleaning vehicle may be of a type in which the cleaning means 21 is incorporated into a self-propelled carriage that can travel on a fixed route in the factory, or a type dedicated to cleaning without having other functions.

In the above-described embodiment, the brush 32 and the grounding wheel body 26 are separately positioned with the vertical axis 23 in the center, and the center of gravity G on the main body 22 side is shifted to the grounding wheel body 26 side. By configuring the
Can be automatically rotated via the vertical shaft 23 so that the brush 32 is located on the running direction side. Two
6 may be provided in this order, and the center of gravity position G on the main body 22 side may be shifted to the ground wheel 26 side. In addition, forward traveling Xa, turning traveling Xb, backward traveling Xc,
For example, the main body 22 may be forcibly rotated via the vertical shaft 23 so that the brush 32 is located on the traveling direction side while traveling while detecting the traveling direction.

[0033]

According to the first aspect of the present invention described above, the floor surface can be cleaned by operating the cleaning means during traveling. That is, in the cleaning means, the brush can be pressed uniformly against the floor surface by bringing the ground wheel into contact with the floor surface. By driving the cleaning work unit in this state and forcibly rotating the brush in a predetermined rotation direction, the brush that is driven to rotate is brought into contact with the floor surface, and dust (dust etc.) on the floor surface is removed. Can be scraped and collected. At that time, the ground wheel rolls on the floor surface, so that the pressure contact posture of the brush with respect to the floor surface can be always maintained appropriately.

In such a cleaning operation, when the vehicle is swung to the left or right, the main body is rotated about the longitudinal axis to
The lateral axis can be orthogonal to the turning direction. Also, when the vehicle is running in reverse, the main body moves 180 degrees around the longitudinal axis.
The brush can be positioned on the reverse running side by rotating the brush over a degree, and the lateral axis can be orthogonal to the reverse running direction. As a result, cleaning by pressing the brush against the floor surface can be performed without applying uneven frictional resistance force to the brush, so that even if the brush is single, forward traveling, turning traveling, backward traveling, etc. In addition, the brush can be less likely to be damaged and suitable cleaning can be always performed regardless of the traveling direction.

According to claim 2 of the present invention described above,
The center of gravity is located behind the vertical axis, and the ground wheel is located behind the center of gravity, so that the vehicle can automatically rotate around the vertical axis when the vehicle is turned to the left or right, and it also moves backward. When driven, the body can automatically rotate about the longitudinal axis through 180 degrees.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view of a cleaning means portion in a cleaning vehicle, showing an example of an embodiment of the present invention.

FIG. 2 is a side view of the cleaning vehicle when traveling forward.

FIG. 3 is a plan view of the cleaning vehicle when traveling forward.

FIG. 4 is a cross-sectional plan view of a cleaning means portion in the cleaning vehicle.

FIG. 5 is a plan view of the cleaning vehicle during turning travel.

FIG. 6 is a side view of the cleaning vehicle when traveling in reverse.

[Explanation of symbols]

1 Forklift (cleaning vehicle) 2 car body 3 front wheels (driving wheels) 4 Rear wheels (direction wheels) 5 driver's seat 6 masts 13 forks 15 seats 16 handles 21 Cleaning means 22 body 23 Vertical axis 26 Grounding wheel 30 Cleaning section 31 Horizontal axis 32 brushes 34 Brush drive 36 dust box 40 Filter section 41 Filter 42 fans 43 Fan drive unit W dust Xa Forward running Xb turning Xc backward run Y floor Z brush rotation direction G Center of gravity position

Claims (2)

[Claims] 1. Cleaning means is provided at a lower portion of a vehicle body, and a main body of the cleaning means is rotatably attached to a vehicle body side via a longitudinal axis, and is attached to the body side via a lateral axis. A cleaning work unit having a rotatable brush and a ground wheel are provided, and the main body is configured to rotate via a vertical axis so that the brush is located on the traveling direction side during traveling. A cleaning vehicle characterized by the above. 2. The brush and the grounding wheel are separately arranged with the vertical axis as the center, and the center of gravity on the main body side is displaced to the grounding wheel side. The cleaning vehicle according to 1.