JP7763581B2 - Suction work vehicle - Google Patents

Description

The present invention relates to a suction work vehicle that allows for emergency stopping of suction operation.

BACKGROUND ART Suction work vehicles have conventionally been used to remove mixtures of solid matter such as rubble and earth and sand and liquid such as water at places such as civil engineering work sites, by sucking up the mixture and recovering it in a tank.
This suction vehicle is equipped with a suction device that uses a suction hose to suck up collected materials and store them in a receiver tank. The suction vehicle is also configured so that the suction device can be controlled by operating an operating unit provided on the vehicle.

When carrying out suction work using the suction work vehicle configured as described above, the suction work vehicle is driven to the site where the suction work is to be carried out, and with the suction work vehicle parked in an appropriate location, the tip of the suction hose is extended to the location of the collected material. The suction work is then carried out by the suction worker holding the tip of the suction hose and the operator operating the control panel on the vehicle.
However, when the collection site is far from the suction vehicle, it is difficult for the suction worker and the operator to communicate with each other, and they have no choice but to perform the suction work by shouting or sending signals.

Furthermore, when the recovery work location is underground, for example, the recovery work location cannot be seen from the control panel, so the operator must move away from the control panel to check the recovery status. As a result, if an abnormality occurs while the operator is away from the control panel and the suction device needs to be stopped, it takes time to stop it.
Furthermore, if the suction hose becomes clogged with material and the pressure inside the suction hose drops, the suction worker will be pulled by the suction hose, making it difficult to work. This can cause the suction worker to panic, hindering communication with the operator, and increasing the risk of injury to the worker and damage to the suction device.

Therefore, a suction work vehicle has been proposed that is equipped with a remote control device that can remotely communicate with the control panel, allowing the suction worker to operate it using the remote control device (Patent Document 1).
However, since suction work vehicles are used in a variety of environments, there are times when the suction work must be stopped urgently depending on the work environment.
For example, sucking up waste with sharp protrusions into a suction hose can damage the suction hose or suction device, and can lead to equipment damage due to a lack of cooling water or overheating in the suction device. Also, a worker's arm or other body part can get sucked into the suction port of the suction hose, immobilizing them, or the suction hose can become violent and send surrounding objects flying, creating a dangerous situation. Furthermore, small animals such as dogs and cats may wander around at work sites, and sucking up these small animals can be fatal.
In such cases, it is desirable to stop the suction operation immediately, but because of the emergency, the worker may panic and make a mistake in stopping the remote control device, which could result in injury to the worker and damage to the suction device.

JP 2009-121029 A

The present invention was made to solve the problems of the prior art described above, and provides a suction work vehicle that can stop suction operation in an emergency to prevent equipment damage and ensure a safe working environment.

The invention of claim 1 relates to a suction work vehicle comprising a suction device that uses a suction hose to suck up collected material at a suction work site and store it in a receiver tank, a plurality of sensors that monitor the status of the suction work, an operating device connected to the sensors and the suction device and operating the suction device, and a remote operating device that can remotely communicate with the operating device, and is characterized in that by simply shaking the remote operating device at least once or applying an impact at any time during suction work, a load release valve connected to the piping connecting the receiver tank that stores the sucked up collected material and the suction device is opened, the engine that drives the suction device's blower is put into an idling state, and the suction operation is stopped.

The invention of claim 2 relates to the suction work vehicle described in claim 1, characterized in that the remote control device has a screen on which an image switch is displayed, and the remote control device normally displays the detection data of the sensor, and when an abnormality occurs, the sensor that detected the abnormality is displayed superimposed on an external view of the suction work vehicle.

The invention of claim 3 relates to the suction work vehicle described in claim 1, characterized in that a diagram of the suction work vehicle is displayed on the remote control device, and when an abnormality occurs, the sensor that detected the abnormality is displayed superimposed on the diagram of the suction work vehicle.

The invention of claim 4 relates to a suction work vehicle as described in claims 1 to 3, characterized in that the remote control device is equipped with an internet communication function.

The invention of claim 5 relates to a suction work vehicle as described in claims 1 to 4, characterized in that the remote control device can be operated by voice.

The invention of claim 6 relates to a suction work vehicle as described in claims 1 to 5, characterized in that the suction device can always be operated using the operating device and the remote operating device.

The invention of claim 7 relates to a suction work vehicle as described in claims 1 to 6, characterized in that the remote control device displays operational data of the suction device.

The invention of claim 8 relates to a suction work vehicle as described in claims 1 to 7, characterized in that the remote control device is equipped with a camera.

The suction work vehicle of the invention according to claim 1 is equipped with a remote control device that can remotely communicate with the operating device, so the suction worker holding the suction hose can carry and operate the remote control device. This makes it possible to operate the suction device according to work situations, such as when the suction hose becomes clogged and the pressure in the suction hose drops, even at work sites where the recovery work location is far from the suction work vehicle or where the recovery work location is not visible from the control panel.
Furthermore, since the suction operation can be stopped by shaking the remote control device, the suction operation can be stopped by shaking the remote control device in emergencies such as when waste with sharp protrusions is sucked into the suction hose, when a worker's arm or other part is sucked into the suction port of the suction hose and becomes immobile, when the suction hose becomes violent and causes danger by flying around objects, or when a small animal is about to be sucked in. This prevents damage to the suction device, work accidents, and the killing of small animals.
Furthermore, by shaking the remote control device at least once at any time during the suction operation, or by throwing it at something or hitting it to give it an impact, the load release valve connected to the piping connecting the receiver tank that stores the collected material to the suction device will open, causing the engine that drives the suction device's blower to idle and stop the suction operation.

According to the suction work vehicle of the invention of claim 2, when an abnormality occurs, the sensor that detected the abnormality is displayed superimposed on an external view of the suction work vehicle, making it easy to understand the nature of the abnormality and allowing appropriate action to be taken.
The sensor may be displayed in any way, such as an illustration or a photograph, as long as it evokes the sensor.

According to the suction work vehicle of the invention defined in claim 3, a diagram of the suction work vehicle's configuration is displayed, and when an abnormality occurs, the sensor that detected the abnormality is displayed superimposed on the diagram of the suction work vehicle. The diagram is written in a way that makes it easy to understand the technical functions of each part that makes up the suction work vehicle, so the nature of the abnormality detected by the sensor displayed superimposed on the diagram can be easily understood, allowing for appropriate response.

In the suction work vehicle of the invention defined in claim 4, the remote control device is equipped with internet communication capabilities, so even if the organization managing the suction work vehicle is far away from the work site, it can grasp the status of the suction work, allowing the managing organization to provide accurate instructions to the work site.

According to the suction work vehicle of the invention described in claim 5, the remote control device can be operated by voice, so even if the worker's hands are full while holding the remote control device, the worker can easily operate it.

With the suction work vehicle of the invention defined in claim 6, the suction device can be operated at any time using the operating device and remote operating device, allowing for quick operation. Furthermore, the operator of the control device and the worker holding the remote operating device can work together to carry out the work.

The suction work vehicle of the invention described in claim 7 is convenient because the suction device's operational performance data can be easily viewed on the remote control device without using a separate device.

In the suction work vehicle of the invention defined in claim 8, the remote control device is equipped with a camera, making it easy to record and communicate the work status. Furthermore, if the remote control device is equipped with internet communication capabilities, even if the organization managing the suction work vehicle is far away from the work site, it can grasp the work status of the suction work from images and videos taken by the camera, allowing the managing organization to provide accurate instructions to the work site.

1 is a plan view of a suction work vehicle according to a first embodiment of the present invention; FIG. FIG. FIG. 2 is a configuration diagram of the suction work vehicle. 4 is a front view of an operating device for a suction device of the suction work vehicle. FIG. 3 is a front view of an operating device for a suction valve and the like of the suction work vehicle. FIG. FIG. 2 is a front view of the remote control device of the suction work vehicle. 10 is a display screen of the remote control device under normal conditions. 10 is an operation screen of the remote control device. 10 is a display screen when an abnormality occurs in the remote control device. 10 is a display screen when an abnormality occurs in the remote control device. 10 is a display screen when an abnormality occurs in the remote control device. 10 is a log display screen of the remote control device. 10 is a diagram showing a display screen in normal operation on a remote control device for a suction work vehicle according to a second embodiment of the present invention. 10 is a display screen when an abnormality occurs in the remote control device of the suction work vehicle according to the second embodiment of the present invention.

First Embodiment
A preferred first embodiment of a suction work vehicle according to the present invention will be described with reference to the drawings. A plan view of the suction work vehicle is shown in Fig. 1, a side view in Fig. 2, and a rear view in Fig. 3. A basic configuration diagram of the suction work vehicle is shown in Fig. 4.
The suction work vehicle is equipped with a suction device that uses a suction hose to suck up collected materials at the suction work site and store them in a receiver tank, multiple sensors that monitor the status of the suction work, an operating device that is connected to the sensors and the suction device and operates the suction device, and a remote operating device that can remotely communicate with the operating device, and the suction operation is stopped by shaking the remote operating device.
The suction work vehicle 1 is equipped with a suction hose 2 having a suction port for sucking up collected materials, a receiver tank 31 for storing the sucked-up collected materials, a secondary catcher 32, a tertiary catcher 33, a quaternary catcher 34, and a suction device 4. The suction device 4 is made up of a first stage blower 41 and a second stage blower 42 connected in series.

The receiver tank 31, secondary catcher 32, and tertiary catcher 33 are connected in series, and the first stage blower 41 and second stage blower 42 are connected after the tertiary catcher 33. The quaternary catcher 34 is connected after the second stage blower 42.
The receiver tank 31 is composed of a main body 311 and a lid 312, and the lid 312 opens and closes upward as shown in FIG.
When the collected materials accumulated in the receiver tank 31 are to be discharged, the lid 312 is opened and the front part of the main body 311 is raised by the cylinder into a scalloped state (inclined state) to allow the collected materials to fall.

The suction hose 2 is connected to a suction port 31a of the lid 312, and a suction valve V1 that opens and closes is provided at the suction port 31a. The collected material sucked through the suction hose 2 is stored in a receiver tank 31.
The lid 312 also has a pressure port 31b for discharging collected materials and the like from the receiver tank 31 to the outside of the tank, and the pressure port 31b is provided with a valve V8.

The secondary catcher 32 is connected to the downstream side of the receiver tank 31 by a pipe L1. A valve V2 is provided on the pipe L1. A pipe L11 that is connected to the downstream side of the second-stage blower 42 branches off from the pipe L1, and a valve V3 is provided on the pipe L11.
The secondary catcher 32 is a cyclone dust collector that captures fine solid matter that has not been collected in the receiver tank 31 .
The tertiary catcher 33 is connected to the downstream side of the secondary catcher 32 by a pipe L2. A pipe L21 that connects to the fourth catcher 34 branches off from the pipe L2, and a load release valve V4 is provided on the pipe L21.
The tertiary catcher 33 is a wet dust collection tank that holds a predetermined amount of water. Air from the pipe L2 is blown onto the water, capturing fine solid matter that was not captured by the secondary catcher 32.

The first stage blower 41 is connected to the downstream side of the tertiary catcher 33 by a pipe L3. The second stage blower 42 is connected to the downstream side of the first stage blower 41 by a pipe L4. A pipe L41 branches off from the pipe L4 and connects to a pipe L5, which will be described later, and a check valve V5 is provided in the pipe L41.
The first stage blower 41 and the second stage blower 42 are driven by the drive engine of the suction work vehicle 1. However, a dedicated engine may be provided separately from the drive engine of the suction work vehicle 1.

The quaternary catcher 34 is connected to the downstream side of the second stage blower 42 by a pipe L5. A valve V6 is provided in the pipe L5. The pipe L5 is connected to a pressure breaker V7 at two points, upstream and downstream of the valve V6, and is released to the atmosphere when the pressure exceeds a predetermined pressure.
The quaternary catcher 34 is a wet dust collection tank that holds a predetermined amount of water.
The quaternary catcher 34 has an opening 34a, and the air sent from the second stage blower 42 is released from the opening 34a.
The open port 34a of the quaternary catcher 34 and the pipe L5 are provided with silencers to reduce exhaust noise.

<Valve settings during suction>
When collecting materials, the suction valve V1 is open, the valve V8 is closed, the valve V2 is open, the valve V3 is closed, the load release valve V4 is closed, and the valve V6 is open, and the first stage blower 41 and the second stage blower 42 are driven.
The collected material is sent in the following order: suction hose 2, receiver tank 31, pipe L1, secondary catcher 32, pipe L2, tertiary catcher 33, pipe L3, first stage blower 41, pipe L4, second stage blower 42, pipe L5, and fourth stage catcher 34.
<Valve settings when pumping>
When the collected material in the receiver tank 31 is pressure-fed out of the tank, the suction valve V1 is closed, the valve V8 is open, the valve V2 is closed, the valve V3 is open, the load release valve V4 is open, and the valve V6 is closed, and the first stage blower 41 and the second stage blower 42 are driven.
Air is sucked in from the release port 34a of the quaternary catcher 34 and passes through pipe L21, pipe L2, the tertiary catcher 33, pipe L3, the first stage blower 41, pipe L4, the second stage blower 42, pipe L11, and pipe L1 to enter the receiver tank 31, and the recovered material in the receiver tank 31 is released from the pressure port 31b.

<Sensor>
The following sensors are provided on the suction work vehicle 1. Figure 4 shows the locations where the sensors are provided.
(1) Level sensors (S11, S12, S13, S14) of the receiver tank 31: Four level sensors are provided in the depth direction to detect the amount of cargo in the receiver tank in 1/4 units.
(2) Negative pressure sensor (S21): Measures the negative pressure in the pipe L3 during suction.
(3) Positive pressure sensor (S22): Measures the positive pressure in the pipe L11 during pressure feeding.
(4) Tertiary catcher water level sensor (S3): Detects when the water level in the tertiary catcher is full.
(5) Quaternary catcher water level sensor (S4): Detects the low water level in the quaternary catcher.
(6) Blower exhaust temperature sensor (S5): Measures the exhaust temperature of the second stage of the blower.
(7) Blower cooling water volume sensor (S6): Detects the volume of blower cooling water.
In addition to the above, the suction work vehicle 1 also has sensors such as an open/close sensor for each valve.

It is desirable that the receiver tank 31 be equipped with level sensors (S11-S14) and a negative pressure sensor (S21) in this suction work vehicle 1. The reason for this is that these sensors directly affect the safety of the suction work, and safety can be ensured by automatically stopping the suction work if any of the sensors detect an abnormality, or by shaking the remote control device 6 as described below depending on the sensor detection status.

<At abnormal times>
The suction work vehicle 1 is equipped with a control unit (not shown) connected to the operation device 5, the remote control device 6, and each sensor, and the control unit performs automatic processing in the event of an abnormality. An example of automatic processing in the event of an abnormality is shown below.

<Operating device>
The suction device 4 and other components are operated using an operating device 5 attached to the suction work vehicle 1, or a remote operating device 6 that can remotely communicate with the operating device 5 via Wi-Fi communication.
The suction device 4 can always be operated by the operation device 5 and the remote operation device 6. This allows the operator of the operation device 5 to respond even if an abnormality occurs in a location that cannot be seen from the remote operation device 6 side at the suction work site, and even if the operator of the operation device 5 performs an operation that is contrary to the suction work situation, the remote operation device 6 can return the operation to its original state. Furthermore, the operator of the control device and the worker holding the remote operation device can work together to perform the work.

≪Operation device 5≫
The operating device 5 includes one for operating the engine speed of the suction device 4 and one for opening and closing the suction valve V1.
As shown in Figure 1, the control panel for the engine speed of the suction device 4 is located near the suction device 4 at the front of the vehicle (P1), and the control panel for opening and closing the suction valve V1 is located near the rear of the receiver tank 31 (P2).
The appearance of the control panel for controlling the engine speed of the suction device 4 is shown in FIG.
It has a button (B1) for increasing or decreasing the engine speed of the first stage blower 41 and the second stage blower 42, an alarm switch (B2), a full-level alarm lamp for the third catcher (B3), a low-level alarm lamp for the fourth catcher (B4), an abnormality lamp for the blower exhaust temperature (B5), and a full-level alarm lamp for the receiver tank (B6).
The appearance of the control panel for opening and closing the suction valve V1 is shown in FIG.
It has an open/close button (B7) for the suction valve V1 and an open/close button (B8) for the spare valve.

<Remote control device 6>
The remote control device 6 is a so-called tablet having a screen. Images are displayed on the screen, and operations can be performed using the switches of the images displayed on the screen.
7 shows a front view of the remote control device 6. A camera is provided above the display screen, and operation buttons are provided below.

The tablet screen displays T1-T9 shown in Figure 8.
T1: Operation details: The following operations performed on the operation device 5 or the remote operation device 6 are displayed together with the time of the operation.
・Engine RPM UP/DOWN
・Load release valve V4 open/close ・Suction valve V1 open/close An example of the display of operation details is shown below.
10:23 Load relief valve V4 closes 10:24 Intake valve V1 opens 10:25 Engine speed increases

T2: Wi-Fi signal strength: Displays the current strength of the Wi-Fi signal.
T3: Engine RPM: Displays the current engine RPM.
T41: Displayed when the load release valve V4 is closed.
T42: This is displayed when auxiliary valve V1 is closed.
T43: Displayed when the powder valve is closed.
T44: Displayed when the water level in the tertiary catcher 33 or the quaternary catcher 34 becomes abnormal.
T5: Vehicle status: Displays current vehicle information.
An example of vehicle information display is shown below.
Suction valve V1: Closed Load release valve: Closed Blower temperature: 34°C

T6: Suction timer: Displays the remaining time of the suction timer. You can also set the timer by tapping this area.
T7: Blower exhaust temperature: Displays the current second stage blower exhaust temperature.
T8: Air pressure...Displays the current air pressure in the receiver tank 31.
T9: Tank level sensor detection position: Displays the detection height of the receiver tank sensor in 25% increments.

<Operation>
If you tap and hold anywhere on the screen, operation buttons will appear in the upper right corner of the screen as shown in Figure 9. The contents of each operation button are as follows :
Vacuum Open (T10): Opens the suction valve V1.
Vacuum Close (T11): Closes the suction valve V1.
Stop (T12): Opens the load release valve V4, and when the vacuum pressure drops , reduces the engine speed to idling.
Start (T13): The engine speed is increased to the suction speed, and the load release valve V4 is closed.

<When an abnormality occurs>
When an abnormality occurs, the details of the abnormality are displayed for a predetermined time as shown in FIG. 10, and then an inquiry is made as to the location of the abnormality as shown in FIG.
If you select "Yes" in response to the question "Do you want to display the location of the abnormality?", an illustration of the sensor that detected the abnormality will be superimposed on the external view of the suction work vehicle, as shown in Figure 12. In the example of Figure 12, an illustration of the negative pressure sensor with a signal abnormality is displayed.
Not only text but also an illustration of the sensor that detected the abnormality is displayed overlaid on the exterior view of the suction vehicle, making it easy to quickly understand the nature of the abnormality and allowing for appropriate action to be taken.
Photographs or videos may be displayed instead of illustrations.

<Emergency stop>
The remote control device 6 (tablet) is equipped with an acceleration sensor. When a person shakes the tablet and the acceleration reaches a predetermined value or more, the tablet will be brought to an emergency stop. The tablet can also be thrown without being shaken and hit against something.
Since the suction work vehicle 1 is used in a variety of environments, there may be times when the suction work must be stopped urgently depending on the work environment.
For example, sucking waste with sharp protrusions into the suction hose 2 may damage the suction hose 2 or the suction device 4, and may result in equipment damage due to a lack of cooling water or overheating of the suction device 4. Also, a worker's arm may be sucked into the suction port of the suction hose 2, immobilizing them, or the suction hose 2 may become violent and cause surrounding objects to be thrown, creating a dangerous situation. Furthermore, small animals such as dogs and cats may wander around at work sites, and sucking in these small animals may result in death or injury.
In such cases, it is desirable to stop the suction operation immediately, but because of the emergency, the worker may panic and make a mistake in stopping the remote control device, which could result in injury to the worker and damage to the suction device.
However, in the suction work vehicle 1 of this embodiment, the suction operation can be stopped by shaking the remote control device 6, so in emergencies such as when waste with sharp protrusions is sucked into the suction hose, when work becomes dangerous, or when a small animal is about to be sucked in, the suction operation can be stopped by shaking the remote control device. This prevents damage to the suction device, work accidents, and the killing of small animals.
The remote control device 6 stops the suction action using an accelerometer, so the suction action can be stopped not only by shaking it, but also by throwing it at something or hitting it to give it an impact.
The set value of acceleration for an emergency stop is, for example, 2 m/s2 ^or more, and the device may be stopped when the acceleration is detected three times or more.

<Log display>
On the log display screen, the suction work records stored in the vehicle are downloaded to the remote control device 6 and displayed as a summary (see FIG. 13).
The data includes the monthly suction work hours this year, as well as the suction work locations and work time percentages for the specified month.
When you tap on the pie chart by suction work location, the specified location will be displayed in the Maps app.
This is convenient because the aggregated results of the log information can be easily viewed without using a separate device.

<Internet communication function>
The remote control device 6 has an internet communication function, and can communicate with remote locations via the internet. This allows the organization managing the suction work vehicle 1 to grasp the status of the suction work even if it is far away from the work site, and therefore the managing organization can give accurate instructions to the work site.

<Voice operation>
The remote control device 6 is configured to be operable by voice, so that the worker can easily operate the device even if his or her hands are full.

<Camera>
The remote control device 6 has a camera function and can take still images and videos. This makes it easy to record and communicate the work status. Furthermore, if the remote control device has an internet communication function, even if the organization managing the suction work vehicle is far away from the work site, it can grasp the work status of the suction work from images and videos taken by the camera, so the managing organization can give accurate instructions to the work site.

<Remote control>
Although a tablet with a display screen is used as the remote control device 6, a so-called remote control that does not have a visual switch but only a mechanical switch may be used together with the tablet. A tablet may become inoperable if it gets wet, but a remote control has the advantage that it is water-resistant and can be used even in bad weather.

Second Embodiment
The suction work vehicle 1 of the second embodiment differs from the suction work vehicle 1 of the first embodiment in the content of the display when an abnormality occurs in the remote control device 6.
Figure 14 shows the original image displayed when an abnormality occurs. The original image consists of a diagram of the suction work vehicle 1 and a display of the sensors superimposed on the diagram. When an abnormality occurs, the location of the sensor that detected the abnormality is displayed in a large, bright image (see Figure 15). The example in Figure 15 shows a case where a signal abnormality has occurred in the negative pressure sensor (S21) in pipe L3.
The diagram is presented in a way that makes it easy to understand the technical details of each device that makes up the suction work vehicle 1, making it easy to see what is detected by the sensors attached to each device. Furthermore, if a sensor detects an abnormality, the sensor is displayed alongside the diagram, making it easy to understand the impact that the abnormality will have on the entire suction work vehicle. This allows appropriate measures to be taken.

This invention relates to a suction work vehicle that can stop suction work in an emergency. Since the suction operation can be stopped in an emergency, suction operation can be stopped by shaking the remote control device in emergencies such as when waste with sharp protrusions is sucked into the suction hose, when a worker's arm or other part is sucked into the suction port of the suction hose, immobilizing them, when the suction hose becomes violent and causes surrounding objects to be thrown away, or when a small animal is about to be sucked in. This prevents damage to the suction device, work accidents, and the killing of small animals. This allows the vehicle to be used safely for suction work at construction sites where a mixture of solid materials such as rubble and soil and liquids such as water is removed, particularly at sites where waste with sharp protrusions is mixed in or where small animals roam.

1 Suction work vehicle 2 Suction hose 31 Receiver tank 31 a Suction port 31 b Pressure port 311 Main body 312 Lid 32 Secondary catcher 33 Tertiary catcher 34 Fourth catcher 4 Suction device 41 First stage blower 42 Second stage blower 5 Operation device 6 Remote operation device

Claims (8)

A suction device that uses a suction hose to suck up collected materials at a suction work site and store them in a receiver tank;
a plurality of sensors for monitoring the state of the suction operation;
an operating device connected to the sensor and the suction device for operating the suction device;
a remote control device capable of remotely communicating with the operation device;
A suction work vehicle characterized in that by simply shaking or impacting the remote control device at least once at any time during suction work, a load release valve connected to a pipe connecting the suction device to a receiver tank that stores the collected material is opened, the engine that drives the suction device's blower is put into an idling state, and the suction operation is stopped. The remote control device has a screen on which an image switch is displayed,
The suction work vehicle described in claim 1, characterized in that the remote control device displays the detection data of the sensor under normal conditions, and when an abnormality occurs, the sensor that detected the abnormality is displayed superimposed on an external view of the suction work vehicle. The suction work vehicle described in claim 1, characterized in that the remote control device displays a diagram of the suction work vehicle, and when an abnormality occurs, the sensor that detected the abnormality is displayed superimposed on the diagram of the suction work vehicle. 4. The suction work vehicle according to claim 1, wherein the remote control device has an internet communication function. 5. The suction work vehicle according to claim 1, wherein the remote control device can be operated by voice. 6. The suction work vehicle according to claim 1, wherein the suction device can be operated at all times by the operation device and the remote operation device. 7. The suction work vehicle according to claim 1, wherein the remote control device displays operational performance data of the suction device. 8. The suction work vehicle according to claim 1, wherein the remote control device is equipped with a camera.