JP2693657B2 - Garbage suction transport device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust suction transport system in which secondary air is introduced after negative pressure is applied in a vessel storing dust and the secondary air is transported to the dust storage tank to transport the dust in the vessel. Regarding the device.

[0002]

2. Description of the Related Art A conventional dust suction / transport device transports the dust in the vessel to a dust storage tank by introducing a secondary air into the vessel after depressurizing the vessel to a predetermined negative pressure value. In addition to performing so-called automatic suction, so-called direct suction that sucks dust scattered on the road is performed. Also, the operation of each valve for performing automatic suction and direct suction is performed by the air supplied from the compressor tank, and the air pressure for operating each valve is restored to the predetermined pressure. ing.

The above-mentioned operations of automatic suction, direct suction, and air pressure recovery are selectively performed by switches provided in the operating device.

[0004]

However, in the above-mentioned conventional dust suction / transport device, as described above, the automatic suction,
It is necessary to select and operate each operation of direct suction and air pressure recovery by each switch, and therefore, there is a problem that the operation is complicated and there is a risk that an erroneous operation is performed.

[0005]

A dust suction / transport device of the present invention comprises a vessel for storing dust, a secondary valve for introducing secondary air into the vessel, a dust suction wheel mounted on the vessel, and A dust storage tank equipped with a detachable suction pipe in a connected docking station, a suction unit for reducing the pressure of the dust storage tank and the vessel, and a secondary air in the vessel after reducing the pressure of the waste storage tank and the vessel. In the dust suction / transport device including the suction unit and the transport control means for controlling the secondary valve to transport the dust in the vessel to the dust storage tank, the connection between the suction pipe and the docking station is detected. And a storage position sensor that detects that the suction tube is placed in the storage position. When the connection between the tube and the docking station is detected, automatic suction is performed to suck the dust from the vessel, and when the storage position sensor does not detect that the suction pipe is placed in the storage position, the suction pipe is used. Directly sucking dust on the road etc., and when the storage position sensor detects that the suction pipe is placed in the storage position, the air that recovers the air pressure of the air source that operates each operating valve. It is configured to be automatically selectable to perform pressure recovery.

[0006]

[Operation] Based on the detection by the docking sensor and the storage position sensor, the automatic suction for sucking dust from the vessel, the direct suction for sucking dust on the road directly by the suction pipe, and the air source for operating each operating valve The operation is facilitated by automatically selecting and recovering the air pressure. Specifically, when the docking sensor detects the connection between the suction pipe and the docking station, the automatic suction is performed, and when the storage position sensor does not detect that the suction pipe is placed in the storage position, the direct suction is performed. Suction is performed, and when the storage position sensor detects that the suction pipe is located at the storage position, the air pressure is recovered.

[0007]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a schematic configuration of a dust suction / transport device of the present invention.

The dust suction / transport device temporarily stores the dust discharged from the home in the vessel and sucks and transports the dust thus collected to the dust storage tank 40 mounted on the dust suction vehicle C by the suction unit 30. It is composed.

Each of the vessels has a T of the same construction.
For example, an appropriate number of _{1 to} Tm are buried and arranged in the basement of a housing complex or a building, for example, and in this example, one of the vessels Tm will be described.

In the vessel Tm, an opening 11 is formed on the top surface, and the lower end of a chute Am vertically arranged over each floor of the building is connected to the opening 11. The chute Am is provided with an input port Bm at a required floor.

The opening 11 is provided with a closing gate Im for opening and closing the opening 11, and the closing gate Im is opened and closed by the expansion and contraction of the air cylinder 12. Also,
A detector (not shown) such as a limit switch for detecting opening and closing of the closing gate Im is provided near the closing gate Im.

A discharge port 13 is provided below the side wall of the vessel Tm.
The outlet 13 is connected to a connecting pipe 15 via a connecting member 14 formed in a funnel shape.
The connection pipe 15 near the discharge port 13 is provided with a discharge gate Em for opening and closing the connection pipe 15.
Is opened and closed by the expansion and contraction of the air cylinder 16.
A detector (not shown) such as a limit switch for detecting opening and closing of the discharge gate Em is provided near the discharge gate Em.

A secondary air inlet 20 is formed below the side wall of the vessel Tm. This secondary air inlet 2
0 is connected to one end of the introduction pipe 21.
Is arranged so that outside air can be supplied into the vessel Tm. The introduction pipe 21 is provided with a secondary valve Vm for opening and closing the introduction pipe 21, and the secondary valve Vm is opened and closed by expansion and contraction of the air cylinder 22. A detector (not shown) such as a limit switch for detecting opening and closing of the secondary valve Vm is provided near the secondary valve Vm.

The connection pipe 15 extends to the docking station 60 and is detachably connected to the suction pipe 50 extending from the dust suction truck C by a coupling 61.

The air cylinders 12, 16,
Reference numeral 22 denotes an air hose (not shown) connected to an air source (not shown) including a compressor tank and the like provided on the dust suction truck C via the docking station 60. Note that the air source may be provided on the vessel Tm side.

The garbage suction truck C includes a suction unit 30
And a dust storage tank 40 for storing dust sucked by the suction unit 30.

The suction unit 30 is, as shown in FIG.
A suction passage 31 having one end connected to the refuse storage tank 40 and the other end open to the atmosphere, a warm scrubber 32 provided in the suction passage 31, and a suction passage 31 provided on the atmosphere open side of the wartask rubber 32; Blower 33
And a muffler 35 provided in the suction passage 31 closer to the atmosphere than the blower 33.

The blower 33 is operated in accordance with the engine speed by driving the engine of the dust suction vehicle C. The dust storage tank 40 is operated by the operation of the blower 33.
In addition, each vessel T _{1 to} Tm is made to have a negative pressure.

The garbage storage tank 40 and the water task rubber 3
An open pipe 39 having an open end is connected to the suction passage 31 between the suction pipe 31 and the suction passage 31 via an atmosphere release valve 34.

The war task rubber 32 and the blower 33
A pressure sensor (pressure detection means) 36 for detecting a negative pressure value by the blower 33 is provided in the suction passage 31 between the pressure sensor 31 and the suction passage 31.

Further, the blower 33 in the suction passage 31
A suction pipe and a discharge side are connected to a bypass pipe 37 via a blower unload valve (relief valve) 38. By controlling the opening and closing of the blower unload valve 38, a negative pressure value is determined at the time of suction transport described later. It's like keeping on a level.

The dust storage tank 40 has a rear end wall formed on an opening / closing door 41 which opens rearward with its upper end edge as a center, and a discharge plate provided inside the dust storage tank 40 so as to be able to be pushed and pulled. Garbage is dumped to the rear of the vehicle.

The suction pipe 50 is connected to the dust storage tank 4.
A swivel pipe 51 connected to the garbage storage tank 40 and rotatably provided around the vertical axis at an upper part of the pipe 0, a flexible pipe 52 connected to the swivel pipe 51, and a flexible pipe 52 connected to the flexible pipe 52. And an undulating tube 53 provided so as to be able to undulate, a telescopic tube 55 connected to the undulating tube 53, a flexible tube 56 connected to the telescopic tube 55, and a distal end connected to the flexible tube 56. 57. Reference numeral 58 denotes a support member for supporting the distal end portion 57, and reference numeral 59 denotes a support frame for supporting the undulating tube 53.

At the time of dust suction transportation, the dust suction wheel C is brought close to the docking station 60 and stopped, and the swivel pipe 51 is swung, the undulating pipe 53 is swung up and down, and the telescopic pipe 5 is moved.
5, the distal end portion 57 of the suction tube 50 can be easily connected to the docking station 60,
Thereby, the garbage storage tank 40 is connected via the connection pipe 15.
Communicating the respective vessel T ₁ to Tm and.

FIG. 3 shows an operation panel 81 arranged in the cab.
Is shown.

In FIG. 3, SW1 is a suction switch,
By turning on the suction switch SW1, automatic suction, direct suction, and air pressure recovery described later are selectively performed. SW2 is an emergency stop switch, SW3 is a suction pipe 5
This is a storage switch for storing 0 to the storage position.
SW4, SW5, and SW6 are operation switches of the suction tube 50, SW7 is a retract switch of the suction tube 50, SW8 is an opening / closing switch of the opening / closing door 41, SW9 is an operation switch of the discharge plate, SW10 is a discharge switch, and SW11 is a power switch. D is a display unit.

FIG. 4 shows the operation panel 82 of the suction tube 50 arranged at the tip 57 of the suction tube 50, and each operation switch SW4, SW5, SW6 of the suction tube 50 similar to the above is provided.

The tip portion 5 of the suction tube 50 is attached to the docking station 60 or the tip portion 57 of the suction tube 50.
A docking sensor 71 for detecting whether or not 7 is connected to the docking station 60 is provided.

Further, the dust suction truck C has a storage position sensor 7 for detecting whether or not the suction pipe 50 is arranged at the storage position.
2 are provided.

The respective information signals detected by the docking sensor 71, the storage position sensor 72, and the pressure sensor 36 are input to a control device (not shown) provided in the dust suction vehicle C.

Further, the control device includes a docking sensor 7
1. In addition to the information signals detected by the storage position sensor 72 and the pressure sensor 36, the detection signals from the detectors provided in the vessels T _{1 to} Tm are signals connected via the docking station 60. In addition to being input by a cable (not shown), operation signals from the operation panels 81, 82 are also input, and in the control device, the docking sensor 71, the storage position sensor 72, and the pressure sensor 36.
Each information signal, detection signal from each detector, each operation panel 8
Each operation of the vessel Tm, the suction tube 50, and the suction unit 30 is controlled based on each operation signal from 1, 82.

Next, the operation of the dust suction / transport device of the present invention constructed as described above will be described with reference to the flow charts of FIGS.

First, the suction tube 50 is manually operated as in steps S1 to S3 of FIG. 5 so that the suction tube 50 exists at a position (for example, the docking station 60 or the storage position) corresponding to the work to be performed. If this manual operation is not required, the process moves from step S1 to step S4.

Then, in step S4, the suction switch SW
1 is turned on or off, and the suction switch SW1 is turned on.
If N, the process proceeds to step S5. In step S5, it is determined whether or not the suction pipe 50 is connected to the docking station 60. If the suction pipe 50 is connected to the docking station 60, steps S10 and S14 to S17 shown in FIGS. 5 and 6 are performed. The automatic suction described below is performed by. If it is desired to perform manual suction from the vessel side during execution of the automatic suction program, the process goes through steps S11 to S13.

If the suction tube 50 is not connected to the docking station 60, step S shown in FIG.
20. In step S20, it is determined whether or not the suction tube 50 is located at the storage position. If the suction tube 50 is not located at the storage position, steps S21 to S32 shown in FIGS. 7 and 8 are performed. Direct suction described below is performed, and if the suction pipe 50 is located at the storage position, the air pressure in the compressor tank is restored in steps S40 to S42.

The determination as to whether or not the suction tube 50 is connected to the docking station 60 at step S5 is made by the docking sensor 71, and at step S20 it is determined whether or not the suction tube 50 is located at the storage position. The judgment is made by the storage position sensor 72.

First, when the suction pipe 50 is connected to the docking station 60, that is, the suction pipe 50 and the docking station 60 are connected by the docking sensor 71.
The operation at the time of automatic suction performed in steps S14 to S17 when the connection with is detected will be described in detail. In this case, the suction pipe 50 of the dust suction truck C and the connection pipe 15 are connected via the docking station 60, and the air cylinders 12, 16, 22 are connected.
And the air source of the dust suction truck C are connected by an air hose via the docking station 60, and each detector, each air cylinder 12, 16, 22 and the control device of the dust suction truck C are docked by a signal cable. It is connected via a station 60.

In step S10, the 1st flag is set, the engine speed is set to a high speed, and then it is determined in step S11 whether or not manual suction is performed. If manual suction is not performed, air pressure is determined in step S14. Make a recovery. The details of the air pressure recovery will be described later.

Thereafter, in step S15, it is determined whether the emergency stop switch SW2 is ON or OFF. If the stop switch SW2 is OFF, the vessel Tm is set in step S16.
Suction of garbage is performed.

Here, the suction of dust from the vessel Tm will be briefly described.

First, the vessel T to be controlled first is
m, the discharge gate Em is opened, the input gate Im is closed, the blower unload valve 38 is closed, and the blower 33 is turned on to start air suction.

Next, when the blower negative pressure value detected by the pressure sensor 36 exceeds the set value, the secondary valve Vm is opened, the secondary air is introduced from the introduction pipe 21 into the vessel Tm, and the secondary air is introduced. While the secondary air swirls in the vessel Tm, the secondary air flows from the discharge port 13 of the vessel Tm into the dust storage tank 40 through the connecting pipe 15 and the suction pipe 50, and the secondary air and the dust in the vessel Tm flow into the dust storage tank 40. Transport by suction. After such an operation is repeated an appropriate number of times, the process moves to the next vessel Tm, and dust is sucked in the same manner as described above.

In this way, the suction of the dust in each vessel Tm is performed, and the suction of the last vessel Tm is completed in step S17, or the emergency stop switch SW2 is set in step S15 during the suction of each vessel Tm. When it is turned on, the process proceeds to step S50, and this step S50
Then, the air release valve 34 is opened, and the blower unload valve 38 is opened. After two seconds have elapsed, the engine speed is reduced and returned to idling (steps S51 and S52), the blower 33 is set to a low operating state, and the operation is completed.

Here, it is judged in step S51 whether or not 2 seconds have elapsed, as shown in FIG. 10, the negative pressure value is completely changed from the position X at which the negative pressure value considered to be closed is reached. It was found that it took t seconds to lower the engine speed, and if the engine speed was lowered to idle during this time, the blower 33
It happens that the engine stops due to the load acting on the engine. Therefore, a delay device (not shown) waits for t seconds (2 seconds in this example) for the negative pressure value to completely decrease, and then issues a command to reduce the engine speed to idling, thereby reducing the engine speed. It prevents the engine from stopping when it is lowered to idle, so-called engine stall.

The delay time may be set appropriately in consideration of the performance of the blower 33, the suction scale based on the vessel Tm and the dust storage tank 40, and the like.

Although not shown in the flow chart, the process proceeds to step S50 and the same process as described above is performed when the blockage occurs during the suction of dust from each vessel Tm.

Steps S12 to S13 are steps for the operator to manually operate when a blockage occurs during automatic suction.

Next, in step S20, if the suction tube 50 is not located at the storage position, that is, if the storage position sensor 72 does not detect that the suction tube 50 is located at the storage position, step S21. ~ Step S32
The direct suction performed by will be described.

In this case, the 1st flag is reset in step S21, the engine speed is set to a high speed, and the air pressure is recovered in step S22. The details of the air pressure recovery will be described later.

Next, in steps S23 and S24, the atmosphere release valve 34 is closed and the blower unload valve 38 is closed. Thereafter, in step S25, the stop switch SW2 is turned off.
It is determined whether N or OFF. If the stop switch SW2 is OFF, dust scattered on the road is directly sucked by the suction pipe 50 in steps S26 to S32.

The direct suction in steps S26 to S32 is performed by determining in step S26, 28, 30 whether the negative pressure exceeds the negative pressure set values C, B, A shown in FIG. Yes, step S2
If the negative pressure exceeds the negative pressure set value C in step 6, it is regarded as blockage, a blockage error is displayed in step S27, suction is stopped, and the process proceeds to step S50 shown in FIG. The open valve 34 is opened, the blower unload valve 38 is opened, and after 2 seconds have elapsed, the engine speed is reduced to return to idling (steps S51, 5).
2) Finish the work.

If the negative pressure exceeds the negative pressure set value B in step S28, the atmosphere opening valve 34 is opened in step S29 and the process returns to step S24 shown in FIG.

Further, when the negative pressure exceeds the negative pressure set value A in step S30, the blower unload valve 38 is opened and the atmosphere release valve 34 is opened in steps S31 and S32.
Is closed and the process returns to step S25. If the negative pressure does not exceed the negative pressure set value A in step S30, the process proceeds to step S2.
Return to 2.

Further, when the stop switch SW2 is turned on in step S25 during the direct suction, as shown in FIG.
In step S50, the air release valve 34 is opened, the blower unload valve 38 is opened, and after 2 seconds, the engine speed is reduced to return to idling (steps S51 and S52), and the operation is completed. .

Next, in step S20, when the suction tube 50 is placed in the storage position, when the storage position sensor 72 detects that the suction tube 50 is placed in the storage position, steps S40 to S42 are executed. The air pressure recovery performed will be described. 1 in step S40
The st flag is set, the engine speed is set to a high speed, the air pressure in the compressor tank is restored in step S41, and then the engine speed is reduced to idling, and the operation is completed.

Here, in the air pressure recovery, a process as shown in FIG. 9 is performed.

First, in step S60, the stop switch SW
2 is ON or OFF, and the stop switch SW2 is
If FF is determined whether the following or air pressure of the compressor tank 5Kg / cm ² or more in step S61, the display of the air pressure during the recovery process proceeds to step S64 if 5Kg / cm ² or less. If it is 5 kg / cm ² or more, 1 is determined in step S62.
It is determined whether the st flag is set or reset. If the 1st flag is set, step S
Proceeding to 64, an indication that the air pressure is being recovered is displayed.

Then, in step S65, it is determined whether the air pressure in the compressor tank is 8 kg / cm ² or more, and 8
If it is equal to or less than Kg / cm ² , the flow returns to step S60. If the air pressure of the compressor tank is equal to or more than 8 kg / cm ² , the completion of air pressure recovery is displayed in step S66,
At 67, the 1st flag is cleared.

If the 1st flag is reset in step S62, the display is cleared in step S63.

That is, the steps S10 to S
In the case of automatic suction by step S17, step S10
The 1st flag is set, so the air pressure is 8kg
/ cm ^2, and in the case of direct suction in steps S21 to S32, the 1st flag is reset in step S21, so that the air pressure is set to 5 kg / cm ² . When only the air pressure is recovered in step S41, the air pressure is set to 8 kg / cm ² .

Here, in the case of automatic suction, since it is necessary to operate the gates Im and Em having large operation resistance, the air pressure is set to a high value of 8 kg / cm ^2, and in the case of direct suction, the valve is set. The air pressure is 5 kg because it only activates
/ cm ² is set low. In this way, by changing the air pressure to be set according to the use, it is possible to suppress energy waste and save energy.

If it is desired to recover the air pressure as a preparation, the air pressure is set to 8 kg / cm ² so that either method can be executed.

The stop switch S is operated during the air pressure recovery described above.
When W2 is turned on, the process proceeds from step S60 to step S67 to clear the 1st flag.

After the air pressure is recovered in this way, the process proceeds to the above-mentioned steps S15, S23, S42.

[0066]

As described above, according to the dust suction / transport device of the present invention, when the docking sensor detects the connection between the suction tube and the docking station, the dust is automatically sucked from the vessel, When the storage position sensor does not detect that the suction pipe is placed in the storage position, the suction pipe directly sucks dust on the road, etc., and the storage position sensor places the suction pipe in the storage position. When it is detected that the air pressure of the air source that operates each operation valve is recovered, it is configured to be automatically selectable, so it is possible to operate the suction switch simply. Each of the above operations is executed,
It can be used safely without the risk of the operator making a mistake.

[Brief description of the drawings]

FIG. 1 is a configuration diagram schematically showing a dust suction / transport device of the present invention.

FIG. 2 is a view schematically showing a suction unit.

FIG. 3 is a front view showing an operation panel installed in a cab.

FIG. 4 is a front view showing an operation panel installed at a distal end portion of a suction pipe.

FIG. 5 is a flow chart for explaining the operation of the dust suction / transport device of the present invention.

FIG. 6 is a flow chart for explaining the operation of the dust suction / transport device of the present invention.

FIG. 7 is a flow chart diagram for explaining the operation of the dust suction / transport device of the present invention.

FIG. 8 is a flow chart for explaining the operation of the dust suction / transport device of the present invention.

FIG. 9 is a flow chart diagram for explaining a process of air pressure recovery.

FIG. 10 is a diagram showing an example of controlling a negative pressure value in direct suction.

[Explanation of symbols]

 30 Suction Unit 40 Dust Storage Tank 50 Suction Pipe 60 Docking Station 71 Docking Sensor 72 Storage Position Sensor C Dust Suction Vehicle Tm Vessel Vm Secondary Valve

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Katsuhiro Egashira 6-107 Takino-cho, Nishinomiya-shi, Hyogo Shinmeiwa Industry Co., Ltd. Development Technology Headquarters (72) Inventor Koichi Okamoto 6-107 Takino-cho, Nishinomiya-shi, Hyogo Shinmeiwa Industry Co., Ltd. (56) References Japanese Patent Laid-Open No. 1-197205 (JP, A) Japanese Patent Laid-Open No. 4-256601 (JP, A) Actual flat 3-53909 (JP, U) Actual flat 4-112808 (JP, U)

Claims (1)

(57) [Claims] 1. A vessel for storing dust, a secondary valve for introducing secondary air to the vessel, and a suction pipe which is mounted on a dust suction wheel and is detachably attached to a docking station connected to the vessel. A waste storage tank, a suction unit for reducing the pressure of the waste storage tank and the vessel, and a negative pressure for the waste storage tank and the vessel, and then introducing secondary air into the vessel to transport the waste in the vessel to the waste storage tank. In the dust suction / transport device including the suction unit and the transport control means for controlling the secondary valve, the docking sensor for detecting the connection between the suction pipe and the docking station, and the suction pipe are arranged at the storage position. a storage position sensor for detection are mounted that have, the dots
Suction tube and docking station with King sensor
Dust from the vessel when it detects a connection
Automatic suction is performed, and the suction tube is moved by the storage position sensor.
Suction when it does not detect that it has been placed in the storage position
Direct suction is performed by directly sucking dust on the road, etc.
The suction pipe is placed in the storage position by the storage position sensor.
Air that activates each operating valve when it is detected
Automatic to recover air pressure to recover the source air pressure
A dust suction / transport device characterized by being configured to be selectable .