JP3134487B2 - 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 controlling the opening and closing of a flap for opening and closing an opening of a dust box.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG.
The dust on the floor is swept up into the dust box 53 by the main brush 52 rotating at the bottom of the first box. The dust box 53 rotates about the support shaft 55 by the expansion and contraction operation of the electromagnetic expansion and contraction cylinder 54 provided on the floor cleaning truck 51. Therefore, the dust collected in the dust box 53 is discharged. Further, a flap plate 57 is rotatably provided in the opening 56 of the dust box 53, and the opening 56 of the dust box 53 is provided by the flap plate 57.
Is opened or closed. When the floor cleaning truck 51 travels without cleaning, the opening 56 of the dust box 53 is closed by the flap plate 57 and the dust box 5 is closed.
The dust in 3 is not released to the outside.

The flap plate 57 is opened or closed by an electromagnetic flap cylinder 58 operated by an operation switch (not shown). That is, dust box 5
When the operation switch is operated to close the third opening 56, a control device (not shown) causes the flap cylinder 58 to extend. Then, the flap plate 57 rotates to close the opening 56 of the dust box 53. At this time, since a blockage detection switch (not shown) is turned on, the control device stops the operation of the flap cylinder 58 based on the ON.

Similarly, the opening 56 of the dust box 53
When the operation switch is operated, the control device causes the flap cylinder 58 to contract. Then, the flap plate 57 rotates to open the opening 56 of the dust box 53.
To release. At this time, since the open detection switch (not shown) is turned on, the control device stops the operation of the flap cylinder 58 based on this on.

[0005]

However, for example, when the cleaning operation is completed, the operator operates the operation switch so as to close the opening 56 of the dust box 53 by rotating the flap plate 57 to operate the flap cylinder 58. Is extended. Here, the opening 5 of the dust box 53
Dust (for example, empty cans) swept up near 6 may interfere with the flap plate 57 and stop the rotation of the flap plate 57. For this reason, the flap plate 57 is
6 cannot be closed.

In addition, the control device attempts to close the opening 56 by the flap plate 57 by extending the flap cylinder 58 unless the control device detects the ON operation of the blockage detection switch. 58 may be damaged.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a floor cleaning vehicle capable of preventing breakage of a flap cylinder.

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a dust box for collecting dust swept up by a main brush rotating at the bottom of a vehicle, and opening or closing an opening of the dust box. A flap plate, a driving unit for operating the flap plate to open or close the opening, and a driving unit for driving the driving unit for a predetermined time to operate the flap plate to open or close the opening of the dust box. The gist of the invention is to provide a time setting control means.

[0009]

The flap plate is operated by the driving means to open or close the opening of the dust box. Further, since the driving means can be driven for a predetermined time by the driving time setting control means, the flap plate operates for a predetermined time. After the elapse of the predetermined time, the driving means is stopped by the driving time setting control means to stop the operation of the flap plate.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will now be described with reference to FIGS.
This will be described with reference to FIG. As shown in FIGS. 2 and 3, the floor cleaning truck includes a vehicle 1 and a dust box 2 provided on a front surface thereof. The dust box 2 is formed in a substantially L-shaped side surface, and an opening (entrance) portion 3 is formed in a lower side surface (the vehicle 1 side in FIG. 2).
A dust cover 4 is disposed at the center of the bottom of the vehicle 1 in the width direction of the vehicle 1 (the direction perpendicular to the plane of FIG. 2). The dust cover 4 is formed such that the floor side and the opening 3 side of the dust box 2 are opened.

In the dust cover 4, a main brush 5 is rotatably disposed. Therefore, the dust swept up by the main brush 5 can be collected in the dust box 2 through the opening 3. The main brush 5 is connected to an operation lever 6 provided in a driver's seat of the vehicle 1 via a wire and a link mechanism (not shown). Accordingly, the link mechanism operates via the wire by operating the operation lever 6, and the main brush 5 moves upward to the position shown by the two-dot chain line. That is, the main brush 5 can be separated from the floor surface or grounded by the operation lever 6.

Supporting pieces 7 are formed on both sides of the upper rear surface of the dust box 2 so as to protrude. A pair of support members 8 are provided on both upper sides of the front surface of the vehicle 1, and a support piece 9 of the dust box 2 is rotatably supported on a support shaft 9 inserted and supported by the support members 8. Therefore, the dust box 2 is supported so as to be rotatable about the support shaft 9.

A pair of connecting pieces 10 are fixed to both sides of the back surface of the dust box 2, and a piston rod 12 of an electromagnetic telescopic cylinder 11 supported by the vehicle 1 so as to be swingable is fixed to the connecting pieces 10 by pins 15. It is connected. Therefore, when the piston rod 12 of the telescopic cylinder 11 is extended, the dust box 2 rotates clockwise about the support shaft 9 so that dust in the dust box 2 can be discharged. Also, the dust box 2
At the center of the back surface of the connector, a connection fitting 13 is fixed, and a flap cylinder 14 as a driving means is swingably supported by the connection fitting 13.

Further, as shown in FIG.
A through hole 16 extending in the longitudinal direction of the vehicle 1
Are formed. Further, as shown in FIGS. 2 and 3, a fixed shaft 19 is provided at a lower end between the pair of support pieces 7, and a pipe 20 is rotatably inserted through the fixed shaft 19 and supported. A flap plate 17 is disposed in the vicinity of the opening 3 in the dust box 2, and a connection fitting 21 provided at the center of the base end of the flap plate 17 is connected to the pipe 20 through the through hole 16 of the dust box 2. It is stuck to. As a result, the flap plate 17 rotates around the fixed shaft 19 via the connecting fitting 21 and the pipe 20.

A connecting piece 22 formed in the center of the upper end of the base end of the flap plate 17 projects outside through the through hole 16 and is connected to the piston rod 14 a of the flap cylinder 14. Therefore, when the piston rod 14 a of the flap cylinder 14 is extended, the opening 3 of the dust box 2 can be closed by the flap plate 17. When the piston rod 14a of the flap cylinder 14 is contracted to the position indicated by the solid line, the opening 3 of the dust box 2 can be opened by the flap plate 17.

As shown in FIGS. 3 and 4, limit switches 24, 25
Are provided respectively. On the other hand, pressing plates 26 and 27 are fixed to both sides of the pipe 20.
Is the actuator 24a of the limit switch 24
The pressing plate 27 can press the actuator 25a of the limit switch 25, respectively. That is, when the flap plate 17 is positioned at the position indicated by the solid line due to the contraction operation of the flap cylinder 14,
That is, when the opening 3 is opened by the flap plate 17, the pressing plate 26 presses the actuator 24 a of the limit switch 24 and
4 is turned on. Further, when the flap plate 17 is positioned at the position indicated by the two-dot chain line by the extension operation of the flap cylinder 14, that is, when the opening 3 is closed by the flap plate 17, the pressing plate 27 The limit switch 25 is turned on by pressing the actuator 25a. Accordingly, it is possible to detect the state of the flap plate 17, that is, whether or not the opening 3 of the dust box 2 is closed by the flap plate 17, based on the state detection signals of the limit switches 24 and 25. .

As shown in FIGS. 2 and 3, a filter 29 provided with a shaker motor 28 is provided at an upper portion in the dust box 2, and when a blower (not shown) is driven, the dust box 2 is attracted by its suction force. Dust floating in the inside can be attached to the filter 29. Further, by operating the shaker motor 28, the attached dust can be dropped into the dust box 2.

Next, an electrical configuration for controlling the driving of the flap cylinder 14 and the telescopic cylinder 11 will be described. As shown in FIG. 1, the brush switch 30 is provided with the main brush 5, and detects the state of the main brush 5. That is, the brush switch 30 is turned on and off by raising and lowering the main brush 5 by operating the operation lever 6.
The brush switch 30 is turned off when the main brush 5 is in contact with the floor by the operation described above, and the brush switch 30 is turned on when the main brush 5 is separated from the floor by operating the operation lever 6. Has become.

The detection signal of the brush switch 30 is input to a controller 31 as a drive time setting control means. Based on the detection signal, the controller 31 determines whether the main brush 5 is grounded on the floor. It has become.

The limit switches 24 and 25 are turned on and off by the rotation of the flap plate 17 via the pressing plates 26 and 27. The state detection signal is input to the controller 31. And the limit switch 24,
The controller 31 can determine the state of the flap plate 17 based on the state detection signal 25. In this embodiment, when the limit switch 24 is on and the limit switch 25 is off, the controller 31 determines that the opening 3 of the dust box 2 is opened by the flap plate 17 and
4 is off and the limit switch 25 is on, the controller 31 controls the dust box 2 by the flap plate 17.
Is set in advance so as to determine that the opening 3 is closed.

Further, the flap cylinder 14 is operated by a controller 31. The controller 31 operates the flap cylinder 14 based on the detection signals of the limit switches 24, 25 and the brush switch 30, and controls the rotation of the flap plate 17 to an appropriate position. That is, when the brush switch 30 is off, the controller 31 determines that the main brush 5 is grounded to the floor based on the detection signal.

At this time, the controller 31 determines whether or not the flap plate 17 has closed the opening 3 of the dust box 2 based on the state detection signals of the limit switches 24 and 25. When the controller 31 determines that the opening 3 is closed by the flap plate 17 based on the state detection signals of the limit switches 24 and 25, the controller 31 operates the flap cylinder 14 to contract the piston rod 14a. Then, the flap plate 17 is rotated to the position shown by the solid line to open the opening 3.

Conversely, if the brush switch 30 is on, the controller 31 determines that the main brush 5 is separated from the floor based on this detection signal.
At this time, the controller 31 sets the limit switch 24,
It is determined whether or not the flap plate 17 has closed the opening 3 of the dust box 2 based on the state detection signal 25. When the controller 31 determines that the opening 3 is opened by the flap plate 17 based on the state detection signals of the limit switches 24 and 25, the controller 31 operates the flap cylinder 14 to extend the piston rod 14a. Then, the flap plate 17 is rotated to the position shown by the two-dot chain line to close the opening 3.

Further, a timer circuit section 31a for operating (energizing) the flap cylinder 14 for a predetermined time is provided inside the controller 31. That is, the timer circuit section 31a sets the energizing time (3 seconds in the present embodiment) for extending and retracting the flap cylinder 14 based on the raising / lowering operation of the main brush 5 based on the operation of the operation lever 6. The setting of the energizing time is set in advance by experiment or the like in consideration of the time required for the flap plate 17 to open or close the opening 3.

Therefore, when the main brush 5 is lowered by operating the operation lever 6, the brush switch 30 is turned off.
The opening 3 is opened by the flap plate 17 through the opening.

At the same time, the timer circuit section 31a of the controller 31 starts measuring time. Further, the flap plate 17 rotates by the contraction operation of the flap cylinder 14,
The pressing plate 26 turns on the limit switch 24. When the limit switch 24 is turned on, the controller 31
Stops the contraction operation of the flap cylinder 14. If the limit switch 24 has not been turned on after a predetermined time has elapsed based on the time measurement of the timer circuit 31a, the controller 31 forcibly stops the contraction operation of the flap cylinder 14.

Similarly, when the main brush 5 is raised by operating the operation lever 6, the brush switch 30 is turned on.
The opening 3 is closed by the flap plate 17 through the opening.

At the same time, the timer circuit 31a of the controller 31 starts measuring time. Further, the flap plate 17 is rotated by the extension operation of the flap cylinder 14,
The pressing plate 27 turns on the limit switch 25. When the limit switch 25 is turned on, the controller 31
Stop the extension operation of the flap cylinder 14. If the limit switch 25 has not been turned on after a predetermined time has elapsed based on the time measurement of the timer circuit section 31a, the controller 31 forcibly stops the extension operation of the flap cylinder 14.

An open switch 32a and a close switch 32b are connected to the controller 31. Based on the operation of the open switch 32a and the close switch 32b, the controller 31 operates to extend and retract the flap cylinder 14 to rotate the flap plate 17. The moving operation is performed.

That is, in order to close the flap plate 17 with the opening 3 opened, the closing switch 32 is closed.
By operating b, the controller 31 extends the flap cylinder 14 to rotate the flap plate 17. At the same time, the timer circuit 31a of the controller 31 starts measuring time.

When the flap plate 17 opens the opening 3 and the limit switch 25 is turned on, the controller 31 stops the extension operation of the flap cylinder 14. Further, if the limit switch 25 is not turned on after a predetermined time has elapsed based on the time measurement of the timer circuit section 31a, the controller 31 forcibly stops the extension operation of the flap cylinder 14.

Similarly, the open switch 32 is used to open the flap plate 17 in a state where the opening 3 is closed.
When a is operated, the controller 31 causes the flap cylinder 14 to expand and contract to rotate the flap plate 17. At the same time, the timer circuit 31a of the controller 31 starts measuring time.

When the flap plate 17 closes the opening 3 and the limit switch 24 is turned on, the controller 31 stops the extension / retraction operation of the flap cylinder 14. Further, if the limit switch 24 has not been turned on after a predetermined time has elapsed based on the time measurement of the timer circuit section 31a, the controller 31 forcibly stops the contraction operation of the flap cylinder 14.

An indicator lamp 33 is connected to the controller 31 to indicate that the opening 3 has been normally closed by the flap plate 17. Further, a buzzer 34 is connected to the controller 31 to notify whether or not the opening 3 can be normally closed by the flap plate 17. That is, the controller 31 sounds the buzzer 34 when the flap plate 17 does not close the opening 3 within the time when the timer circuit unit 31a is performing the time measurement.

Next, the operation of the floor cleaning vehicle configured as described above will be described. In a state where the main brush 5 of the floor cleaning truck 1 is at the position indicated by the two-dot chain line, the vehicle 1
Is started to perform the cleaning operation, the operation lever 6 is operated to ground the main brush 5 to the floor surface via a wire and a link mechanism (not shown). Then, the brush switch 30 is turned off, and this detection signal is transmitted to the controller 31.
Is input to Based on this detection signal, the controller 3
1 judges that the main brush 5 is grounded. At this time, the controller 31 determines the state of the flap plate 17 based on the state detection signals of the limit switches 24 and 25. That is, when the limit switch 24 is on and the limit switch 25 is off, the controller 31 determines that the flap plate 17 has opened the opening 3 of the dust box 2 and does not operate the flap cylinder 14 at this time.

When the limit switch 24 is off and the limit switch 25 is on, the controller 31
Determines that the flap plate 27 closes the opening 3 of the dust box 2. Then, the controller 31 causes the flap cylinder 14 to contract. At this time, the timer circuit unit 31a of the controller 31 starts measuring time. For this reason, the flap plate 17 rotates counterclockwise to the position shown by the solid line around the fixed shaft 19 via the connection fitting 21 and the pipe 20. Therefore, limit switch 2
4 is on and the limit switch 25 is off. Based on this state detection signal, the controller 31
Determines that the opening 3 of the dust box 2 has been opened, and stops the contraction operation of the flap cylinder 14.

In this state, when the vehicle 1 is run and the main brush 5 is rotated, a running cleaning operation for sweeping dust on the floor into the dust box 2 through the opening 3 can be performed. As a result, the flap plate 17 is brought into contact with the controller 31 by grounding the main brush 5 on the floor.
And the opening 3 is opened, so that the dust swept up by the main brush 5 can be collected in the dust box 2.

On the other hand, if the flap plate 17 does not normally open the opening 3 within the time measured by the timer circuit 31a and the limit switch 24 is not turned on, the controller 31
Forcibly stops the contraction operation of the flap cylinder 14. Further, the controller 31 sounds the buzzer 34 to inform that the flap plate 17 has not normally opened the opening 3.

When the cleaning operation is completed and the main brush 5 is separated from the floor surface by operating the operation lever 6, as shown by a two-dot chain line, the brush switch 30 is turned on. Based on this detection signal, the controller 31 determines that the main brush 5 has been separated. At this time, the controller 3
1 judges the state of the flap plate 17 based on the state detection signals of the limit switches 24 and 25. Accordingly, in this state, since the limit switch 24 is on and the limit switch 25 is off, it is determined that the flap plate 17 has opened the opening 3 of the dust box 2.

Then, the controller 31 causes the flap cylinder 14 to extend. Thereby, the flap plate 1
7 rotates clockwise around the fixed shaft 19 to a position shown by a two-dot chain line via the connection fitting 21 and the pipe 20, and the tip of the flap plate 17 contacts the lip 23. Then, the limit switch 24 is turned off, and the limit switch 25 is turned on. Based on this state detection signal, the controller 31
Determines that the flap plate 17 has closed the opening 3 of the dust box 2, stops driving the flap cylinder 14,
The display lamp 33 is lit to indicate that the vehicle is in the closed state.

Accordingly, since the opening 3 of the dust box 2 is closed by the flap plate 17, the dust collected in the dust box 2 does not fall outside the vehicle.
Thus, even if the vehicle 1 runs in this state and the vehicle 1 vibrates, it is possible to prevent the dust collected in the dust box 2 from dropping outside the vehicle.

On the other hand, if the flap plate 17 does not normally close the opening 3 within the time measured by the timer circuit section 31a and the limit switch 25 is not turned on, the controller 31
Forcibly stops the extension operation of the flap cylinder 14. That is, dust accumulates near the opening 3 of the dust box 2 and the flap plate 17 cannot normally close the opening 3. Further, the controller 31 sounds the buzzer 34 to notify that the flap plate 17 has not normally closed the opening 3.

Accordingly, the flap cylinder 14 can be operated for a predetermined time of the timer circuit 31a in the controller 31. If the limit switches 24 and 25 are turned on within a predetermined time, the controller 31 determines that the flap plate 17 has normally opened or closed the opening 3 and determines the operation of the flap cylinder 14.
Stops. Also, limit switch 2
If the switches 4 and 25 are not turned on, the controller 31 determines that the flap plate 17 has not normally opened or closed the opening 3. Then, the controller 31 forcibly stops the flap cylinder 14 and the buzzer 34
Sound to inform you of the abnormality.

As a result, if the flap plate 17 does not normally open or close the opening 3, the flap cylinder 1
4 is not always operated (energized), the load on the flap cylinder 14 can be eliminated, and the flap cylinder 14 can be prevented from being damaged.

In this embodiment, the timer circuit 31a
Although the flap cylinder 14 performs the expansion and contraction operation while measuring for 3 seconds, this time can be arbitrarily changed as necessary.

Further, in this embodiment, the operation lever 6
The controller 31 moves the flap plate 1 via the flap cylinder 14 based on the elevation of the main brush 5 by the operation of
7, the open switch 32a and the close switch 32
It is also possible to make an independent configuration based only on the operation b.

In this embodiment, the controller 3
Although the opening and closing of the flap plate 17 is controlled by causing the flap cylinder 14 to extend and retract according to 1, a circuit for causing the flap cylinder 14 to extend and retract may be constituted by a sequence circuit.

When the main brush 5 is separated from the floor by the operation lever 6, the flap plate 17 can be rotated by the automatic control of the controller 31 to close the opening 3, so that the opening 3 can be closed. If the vehicle travels in this state, it is possible to reliably prevent the collected dust from dropping outside the vehicle.

Further, if the main brush 5 is moved up and down by operating the operation lever 6, the flap plate 17 can be set at an appropriate position by the automatic control of the controller 31. Thereby, the setting operation of the floor cleaning truck can be simplified and the operability can be improved.

The switches 24, 25, 3 of this embodiment are
Although the states of the main brush 5 and the flap plate 17 are detected based on the specific operation of 0, this operation setting may be arbitrarily changed.

[0051]

As described above in detail, according to the present invention, there is an excellent effect that the flap cylinder can be prevented from being damaged.

[Brief description of the drawings]

FIG. 1 is an electric block diagram of a floor cleaning truck according to the present invention.

FIG. 2 is a schematic diagram showing a configuration of a floor cleaning truck.

FIG. 3 is a partial sectional view showing a configuration of a dust box.

FIG. 4 is a partial rear view showing a rear surface of the dust box.

FIG. 5 is a schematic diagram showing a configuration of a conventional floor cleaning truck.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Vehicle, 2 ... Dust box, 3 ... Opening, 5 ... Main brush, 14 ... Flap cylinder as drive means,
17 ... flap plate, 31 ... controller as drive time setting control means

Claims (1)

(57) [Claims] 1. A dust box for collecting dust swept up by a main brush rotating at a bottom of a vehicle, a flap plate for opening or closing an opening of the dust box, and opening the opening by operating the flap plate. A floor cleaning vehicle comprising: a driving unit for opening or closing; and a driving time setting control unit for driving the flap plate by driving the driving unit for a predetermined time to open or close an opening of the dust box.