JPH0613364B2 - Waste suction control device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for a dust suction car used in an automatic dust collection system, and in particular, a countermeasure is taken when the dust suction pipe line is blocked by dust. The present invention relates to an applied dust suction control device.

[Conventional technology]

As is well known, the collection of dust generated at home or the like is performed by a procedure of storing the dust in a dust bag, placing it in a predetermined garbage collecting place, and collecting it with a garbage truck.
Then, the operation of taking in the garbage bag placed in the garbage collection place into the garbage collection vehicle is a manual operation by the worker.

However, in such a collecting method, since the garbage collection point has to be set near the road, the garbage bag is put out on the street corner, which spoils the aesthetics and may cause a sanitary problem. In addition, a worker is required in addition to the driver of the garbage truck, and the garbage collection efficiency is not always sufficient.

In order to deal with such a situation, a technology has been proposed for automating the collection of garbage from each home or office. In this technique, a garbage storage tank (vessel) 1 is installed in the basement of a house such as a high-rise house as shown in FIG.
An underground pipe (pipeline) 2 extends from the lower part of the garbage storage tank 1, and an opening 2a thereof is provided on the outdoor ground.

The dust generated inside the house is dropped into the vessel 1 via a dust chute or the like and is stored in the vessel 1. A dust suction wheel 3 is prepared for collecting this dust. The dust suction truck 3 has a dust suction tube 4,
The tip of the dust suction pipe 4 is connected to the opening 2 a of the underground pipe 2. Then, the negative pressure generated by the vacuum suction device 5 is applied to the dust suction pipe 4 and the vessel 1, whereby the dust in the vessel 1 is automatically and sequentially transferred to the dust storage tank 6 in a predetermined order for each vessel 1. Perform automatic suction operation to collect by suction.

[Problems to be Solved by the Invention]

By the way, during the above-mentioned automatic suction of dust, the underground pipe 2 may be blocked by the dust, which may cause a dust blocking trouble in which it is difficult to suck the dust in the specific vessel 1.

When such a dust blocking trouble occurs, it is necessary to stop the automatic suction operation and take an appropriate action according to the dust blocking state. However, in the conventional automatic suction operation, only the sequential control of sequentially sucking each vessel 1 is performed, and when the dust blocking trouble occurs during the suction operation, only the suction operation can be automatically stopped. .

The present invention has been made in order to solve the above problems, and an object thereof is to obtain a dust suction control device capable of taking appropriate measures even if dust clogging trouble occurs during dust suction operation. To do.

[Means for Solving the Problems]

This invention establishes a dust suction pipe line and a signal path between a plurality of dust storage tanks installed on the ground side and a dust suction vehicle, and the plurality of dust suction vehicles from the dust suction vehicle through the signal path. While sequentially giving the tank selection signal to the storage tank side, the negative pressure suction of the dust from the selected dust storage tank to the dust suction truck via the dust suction pipeline is automatically performed in a predetermined order. In the automatic collection system, the dust suction control device mounted on the dust suction vehicle is targeted. The dust suction control device according to the present invention comprises: (a) a blockage detection means for detecting dust blockage of the dust suction pipe by monitoring a negative pressure level in the dust suction wheel,
(b) suction interruption means for interrupting the negative pressure suction when dust clogging is detected, and (c) in response to a predetermined first operation,
First suction resuming means for restarting negative pressure suction from the dust storage tank in which suction has been interrupted in accordance with the above-described order; and (d) in response to a predetermined second operation, next to the dust storage tank in which suction has been interrupted. Second suction resuming means for resuming negative pressure suction from the tank in accordance with the above order. Preferably, further, (e) in response to a predetermined third operation, repeated suction means for repeatedly sucking a negative pressure in the dust storage tank in which suction has been interrupted, and (f) a predetermined fourth operation. In response to, the start tank variable suction means for sequentially performing the negative pressure suction from the dust storage tank designated by the fourth operation is provided.

[Work]

In the present invention, when a dust blocking trouble occurs, it is detected and the automatic negative pressure suction is interrupted. For example, if the operator determines that the closed state of dust is light, the operator performs the “first operation”. Then, the automatic suction operation can be restarted from the closed garbage storage tank. On the other hand, if it is determined that the dust blockage is heavy, the “second operation” is performed.
By performing the above, it is possible to skip the closed tank and restart the automatic suction from the next tank.

Further, by providing the repetitive suction means and the starting tank variable suction means, it is possible to repeatedly suction the closed tank, or arbitrarily select the tank for which the suction is restarted.

It should be noted that the term "ground side" in the present invention means that the device is not mounted on the dust suction vehicle, and is not limited to being above the ground. Also, above
The suction modes executed by the respective means (c) to (f) are referred to as "retry", "skip", "repeat", and "continuous skip", respectively, in the embodiments.

〔Example〕

A. System Configuration (A-1) Overall Configuration FIG. 1 is an explanatory diagram showing a dust collecting system which is a premise of an embodiment of the present invention. As shown in the figure, a vessel unit 12 is installed in the basement of each house 11 such as a high-rise house. The garbage generated inside the house 11 is the garbage inlet 1
By throwing it into the dust chute 14 from No. 3, it can be dropped into the vessel 15 in the vessel unit 12. Air inlets 15a and outlets 15b of the vessel 15 are provided with air sliders 16a and 16b, respectively. The air sliders 16a and 16b can flow / block dust TR and air. An air valve 17 is provided in the bottom opening 15c of the vessel 15, and air can be introduced into the vessel 15 by opening the air valve 17. In addition, 18 is an operation panel for issuing various operation commands from within the vessel unit 12.
A control circuit 9 controls the opening / closing of the air valve 17 and the air sliders 16a and 16b in response to an instruction from the operation panel 18 or the vehicle described later.

The outlet portion 15b of each vessel 15 communicates with an underground pipe 20, and the underground pipe 20 opens at an outdoor docking station 21.

The dust generated inside the house 11 is thrown into the dust chute 14 through the throw-in port 13 to cause the vessel 15
Store inside. A dust suction wheel 30 is prepared to collect the dust TR. The dust suction truck 30 has a dust suction pipe 31, and the tip of the dust suction pipe 31 is connected to the docking station 21. Then, the negative pressure generated by the suction blower mounted on the dust suction truck 30 is applied to the dust suction pipe 31 and the vessel 15, whereby the dust TR in the vessel 15 is sucked and collected in the dust storage tank 32. In addition, 33 and 34 are operation panels, the operation panel 33 installed in the dust suction tube 31 is for driving operation of the dust suction tube 31, and the operation panel 34 provided in the cab of the dust suction vehicle 30 is dust. This is for driving the suction pipe 31 and the like, and for operating the dust suction operation. Further, 35 is an operation panel 33,
A control device for controlling the driving operation of the dust suction pipe 31, the dust suction operation, and the like based on commands from the control unit 34, and is configured using a microcomputer or the like.

(A-2) Vehicle-side Configuration FIG. 2 is a cross-sectional configuration diagram showing a dust suction vehicle 30 equipped with a dust suction device according to an embodiment of the present invention. As shown in the figure, a discharge plate 36 that also functions as a dust compression plate is provided in the dust storage tank 32. The discharge plate 36 is expanded / contracted by the bamboo shoot cylinder 37 so that
X). The discharge plate 36 is normally located at the origin position P0, and moves to the discharge position P1 from the origin P0 when discharging the dust collected in the dust storage tank 32. In addition, the discharge plate 36 is the garbage storage tank 3
When the dust collected in the area 2 is compressed, it moves from the origin P0 within the maximum compression moving-out position P2.

The gate 39 is open as shown by a virtual line 39a in the figure only when discharging, and is closed as shown by a solid line 39 in other cases. The opening / closing operation of the gate 39 is performed by the gate opening / closing hydraulic cylinder 40. In addition, 38 is a discharge plate 36.
It is an aggregate of. Reference numeral 41 denotes a limit switch provided on the bamboo plate cylinder 37 side of the discharge plate 36, that is, outside the dust storage tank 32. The limit switch 41 makes contact with the ON signal when the discharge plate 36 is in contact. When not present, an off signal is output to the control device 35. Therefore,
By detecting the ON / OFF signal of the limit switch 41, the control device 35 can detect whether the discharge plate 36 is located at the origin P0.

The suction blower 42 is rotated by the power of the engine 43 to generate a negative pressure, and the negative pressure is applied to the vessel 15 via the dust storage tank 32 and the dust suction pipe 31 to open the opening 15c.
By introducing air from above, the dust in the vessel 15 is sucked and collected in the dust storage tank 32. At this time, the air slider 16a in FIG. 1 is "closed", and the other air slider 16b and the valve 17 are "open".

Incidentally, 44 is a water scrubber for cleaning the air sucked from the suction blower 42, 45 is an air compressor for generating compressed air to be supplied to the air sliders 16a, 16b, etc. of FIG. 1, and 46 is a drive for the suction blower 42. It is a silencer for muting sound.

The dust suction pipe 31 is composed of a swirling pipe 31a, a flexible pipe 31b, an undulating pipe 31c, a telescopic pipe 31d, a flexible pipe 31e, and the like. The hoisting pipe 31c can be hoisted in the α direction by the hoisting hydraulic cylinder 47, and can be positioned in a horizontal state as shown by a solid line or in a lifted state as shown by a virtual line. Further, the expansion / contraction pipe 31d can be expanded / contracted in the β direction by the expansion / contraction cylinder 48, and is housed in the undulating pipe 31c as shown by a solid line or protruding from the undulating pipe 31c as shown by an imaginary line. . The expansion tube 31d is bent in an inverted L shape, and the flexible tube 31e connected to the expansion tube 31d is vertical to the ground when the undulation tube 31c is in the horizontal state.

The swirl pipe 31a communicates with the inside of the dust storage tank 32 and can swivel in the horizontal plane (± θ) as shown in a plan view in FIG. 3A. The dust suction pipe 31 can swivel as the swirl pipe 31a swivels. As shown in FIG. 3B, the turning operation of the turning tube 31a is performed by pushing and pulling a chain 51 meshed with a sprocket 50 formed on the outer circumference of the turning tube 31a by a pair of turning hydraulic cylinders 52 as shown by arrows. Done by.

By causing the dust suction pipe 31 to perform the above-described swiveling, expanding / contracting, and undulating motions in combination, the flexible pipe 31e can be positioned slightly above the manhole 53 of the docking station 21. The underground pipe 20 and the dust suction pipe 31 in the docking station 21 can be connected by bending the pipe 31e and connecting the open manhole 53 and the flexible pipe 31e.

(A-3) Operation Panel Configuration FIG. 4 is a front view showing details of the operation panel 34 of the dust suction pipe 31 provided in the cab of the dust suction vehicle 30. In the figure, reference numeral 60 denotes a power supply toggle switch, which is a control panel 3
4. Then, the power of the control device 35 is turned on / off, and the power lamp 61 is turned on when the power is turned on. 62 is 2
This is a display unit of eight digits and is provided for displaying the vessel number during suction, an error, and the like. Reference numeral 63 denotes a retracting toggle switch, which operates a retracting operation.
What is the retracting operation? When the dust suction tube 31 turns, the expansion tube 31d
Alternatively, in order to prevent the flexible tube 31e from colliding with the dust storage tank 32, the expansion tube 31d is extended by a predetermined amount and the undulating tube 31c is lifted to the right or left (that is, + θ or −θ in FIG. 3A). This is an operation of turning the dust suction pipe 31 to the side of the vehicle. This retracting operation is performed when the dust suction pipe 31 is docked in the manhole 53 or when the gate 39 is opened to open the tank 32.
This is done when the dust inside is discharged. Then, when this evacuation operation is completed, the evacuation completion lamp 64 is turned on.

65 is a toggle switch for opening and closing the gate, which is the gate 39
Open / close operation of. Reference numeral 66 denotes a push / pull toggle switch for the discharge plate 36, which pushes the discharge plate 36 (that is, moves the discharge plate 36 in the + X direction in FIG. 2) and pulls (-).
The movement of the discharge plate 36 in the X direction) is operated.

Reference numeral 67 denotes a self-illuminating type (lights when turned on) push button switch for discharging operation, which is used for discharging operation. The discharging operation is a series of operations for retracting the dust suction pipe 31 to the right or left, opening the gate 39, and moving the discharging plate 36 to the dust discharging position P1. These sequences are automatically performed. Reference numeral 68 denotes a self-illuminating push button switch for stop operation, which performs an operation of forcibly stopping operations such as automatic suction. Reference numeral 69 is a self-illuminating push button switch for suction, and the suction operation is performed in the ON state. The suction operation, which will be described in detail later, is an operation of sequentially sucking the waste stored in each vessel 15 by the suction blower 42 into the waste storage tank 32 through the underground pipe 20 and the waste suction pipe 31, and sequentially in the vessel. The selection sequence is automatic. Reference numeral 70 denotes a self-illuminating push button switch for storage, which stores the dust suction tube 31 when in the ON state. Storing operation means garbage suction tube 3
1 from an arbitrary position, like the evacuation operation, the garbage storage tank 3
2 is a series of operations in which the robot is moved so as not to collide with 2, and is automatically returned to the stored state as shown by the solid line in FIG. 7
Numerals 1, 72 and 73 are toggle switches, respectively, for individually performing the above-mentioned operations of turning, expanding and contracting and lifting (lifting) the dust suction pipe 31.

FIG. 5 is a front view of the operation panel 33 provided on the flexible tube 31e of the dust suction tube 31. In the figure, 74, 75
Reference numerals 76 and 76 are toggle switches, respectively, which perform the swiveling operation, expanding / contracting operation, and undulation (lift) of the dust suction tube 31 described above.
It is a switch for individually operating the operation.

(A-4) Control System Configuration FIG. 6 is a block diagram showing the configuration of the control system of the dust collection system. As shown in the figure, the vehicle drive system 81, the hydraulic pump 82, the suction blower 42, and the air compressor 45 of the dust suction truck 30 are respectively provided in the engine control circuit 9
It is driven by the power of the engine 43 controlled by 0. The hydraulic oil delivered from the hydraulic pump 82 is selectively passed through the solenoid valve group 83 to the gate lock cylinder 84, the gate opening / closing cylinder 40, the discharge plate pushing reference (bamboo shoot) cylinder 37, and the suction pipe driving cylinder 85. Given. Although not shown in FIG. 2, the gate lock cylinder 84 is a cylinder for locking the gate 39 in a closed state. Also, the suction tube drive cylinder 8
5 is a general term for the undulating hydraulic cylinder 47, the telescopic hydraulic cylinder 48, and the turning hydraulic cylinder 52.

As described above, the suction blower 42 sucks the dust in each vessel 15 into the dust storage tank 32 under negative pressure via the dust suction pipe 31. A backwash air valve 86 is connected to the air compressor 45. When the backwash air valve 86 is driven by the air compressor 45 to be in an open state, the backwash operation can be performed. The backwash operation means that the air path between the dust storage tank 32 and the suction blower 42 is communicated with the outside air by the backwash air valve 86, and the outside air flows into the dust storage tank 32 through the air valve 86. By doing so, it is an operation of pushing back the foreign matter stuck in the filter provided between the dust storage tank 32 and the suction blower 42 into the dust storage tank 32.

Although the control signal line is not shown, the solenoid valve group 83 and the backwash air valve 86 are controlled by the controller 35. Further, in the figure, a hydraulic sensor 87 is installed in the hydraulic pump 82 and a pressure sensor 88 is installed in the waste container 32, as indicated by the connecting symbols "A" and "B".
The detection data obtained by these sensors 87, 88 are given to the control device 35. The control device 35 also receives commands from the operation panel 34 on the cab side and the operation panel 33 on the dust suction pipe 31 side, and an ON / OFF signal from the limit switch 41 for detecting the origin position P0 of the discharge plate 36. Based on these commands and signals, the engine control circuit 90, the solenoid valve group 83, the backwash air valve 86, and the like are controlled.

In addition, the opening 21 of FIG.
A signal line cable extending to 2 and a compressed air hose connector (not shown) are provided side by side. A signal line connector and a compressed air connector that can be connected to the suction tube 31 are provided at the end of the suction tube 31. By connecting these connectors to each other,
As shown by the broken line in the figure, in addition to supplying compressed air from the compressor 45 to the air cylinders in each vessel unit, the operation panel 18 and the control circuit 19 in each vessel unit and the control device 34 on the vehicle side are connected. Electrical connection is made.

B. Automatic Suction Operation The automatic suction operation is an operation of automatically suctioning and collecting the dust in the vessel 15 to the dust storage tank 32 in a predetermined order for each vessel 15 in a predetermined order.

FIG. 7 is a graph showing the change over time in the negative pressure in the dust container 32 during the automatic suction operation. The automatic suction operation will be described below with reference to FIG.

First, in the period R1, the suction blower 42 is rotated by the power of the engine 43 to suck the air in the dust storage tank 32 and raise the negative pressure of the dust storage tank 32 from the initial state MP0 to the suction state MP1. At this time, the air slider 15b of the vessel 15 that is not a suction target remains "closed", but the air slider 15a of the vessel 15 that is a suction target is "closed" and 15b is "open", so the vessel that is a suction target is 15 also becomes a negative pressure state. However, the other vessels 15 are not affected by the negative pressure because the air sliders 15b are all "closed".

Next, in the period R2, the valve 1 of the vessel 15 to be sucked
Set 7 to "open". Then, with the flow of air introduced into the vessel 15 via the air valve 17, the dust TR in the vessel 15 to be sucked is collected in the dust storage tank 32 via the underground pipe 20 and the dust suction pipe 31. .
At this time, the negative pressure in the tank 32 is somewhat lowered by the air introduced from the air valve 17.

Further, during the period R3, the dust sucked and conveyed through the underground pipe 20 is successively stored from the dust suction pipe 31 into the dust storage tank 32, and the dust is reduced from the underground pipe 20. Then, if the dust is completely discharged from the dust suction tube, the controller 35 controls the next suction target vessel 15 in the period R4.
Switch to.

Then, the similar suction operation is performed on the next vessel 15 to be suctioned. Thereafter, the suction operation is automatically performed sequentially in units of vessels, and the suction operation in the above periods R1 to R4 is performed until the collection of dust in all the vessels 15 is completed or a suction stop condition such as a dust blocking trouble occurs. Repeated.

When the underground clogging trouble occurs due to the underground pipe 20 being blocked by the dust during the above-described automatic suction operation, the blocked dust blocks the inflow of air introduced from the air valve 17 into the dust storage tank 32. Therefore, as shown by the broken line BK in FIG.
The negative pressure in 2 rises, exceeds the suction state MP1 and becomes a dangerous state. Therefore, the dust blocking trouble can be detected by detecting the negative pressure in the dust storage tank 32 in the periods R2 and R3.

Utilizing the above characteristics, the pressure value (negative pressure value) P detected by the pressure sensor 88 installed in the dust storage tank 32
When 1 exceeds a predetermined pressure value during the periods R2 and R3, it is considered that a dust blocking trouble has occurred, and the automatic suction operation is automatically forcibly stopped (hereinafter, the above-mentioned stop operation is referred to as an "automatic stop function"). . Further, regardless of the automatic stop function, if the operator determines from the past experience that the dust blocking trouble has occurred, the operator pushes the stop push button switch 68 of the operation panel 34 provided in the cab to manually perform the suction operation. You can of course forcibly cancel.

Although the automatic suction operation is performed in this manner, in this embodiment, in order to cope with the dust blocking trouble, in addition to the normal suction operation of (B-1), four types of (B-2) to (B-5) The operation modes of are provided.

(B-1) Normal suction operation The normal suction operation is a suction operation mainly performed at the start of suction, and is an operation of sequentially performing automatic suction on all the vessels 15 in a predetermined order.

FIG. 8 (a) shows the normal suction operation. As shown in the figure,
The normal suction operation is the suction start vessel 15 of vessel number 1.
It is an operation of sequentially performing automatic suction in a vessel unit from to suction end vessel 15 of the vessel number N _B.

(B-2) Repeat suction operation The repeat suction operation is a suction operation provided when a dust blockage trouble occurs, and the operator pushes the stop target for stopping the vessel 15 to be sucked when the dust blockage trouble occurs. This is an operation of automatically sucking repeatedly until the button switch 68 is pressed.

For example, as shown in FIG. 8 (b), when a dust clogging trouble occurs during automatic suction of the vessel 15 with the vessel number J, as shown in FIG. 8 (c), the vessel 15 with the vessel number J is Repeat suction is to repeat suction. In the normal light dust blocking state, the block suction can be released by this repeat suction operation.

(B-3) Retry suction operation The retry suction operation is an operation in which suction is restarted from the vessel 15 in which the dust blocking trouble has occurred, and thereafter, automatic suction is sequentially performed on the unsucked vessels 15 in a predetermined order.
For example, when a dust blockage trouble that is judged to be in a light dust blockage state occurs, the retry suction operation is performed to automatically suck all the unsucked vessels 15 including the vessel 15 in which the dust blockage trouble has occurred. The operation can be resumed.

That is, as shown in FIG. 8 (b), if a dust blocking trouble occurs during suction of the vessel 15 with the vessel number J, retry suction is performed with the vessel with the vessel number J as shown in FIG. 8 (d). From 15 to the vessel 15 with the vessel number N _B , suction is sequentially performed in vessel units.

(B-4) Skip suction operation In the skip suction operation, the vessel 15 in which dust clogging trouble has occurred is skipped and the vessel 15 to be sucked next
The suction is restarted, and thereafter, the suction is automatically performed on the unsucked vessels 15 in a predetermined order. For example, if the dust blockage problem is heavy and the repeat blockage operation cannot be performed even if the repeat suction operation is performed, the skip suction operation is performed. The suction operation for 15 can be performed, and efficient automatic suction of dust can be performed. That is, even if the repeat suction shown in FIG. 8 (c) does not cancel the dust blocking state of the vessel 15 with the vessel number J, skip suction is performed as shown in FIG. 8 (e).
As shown in, the vessel 15 with the vessel number (J + 1)
To the vessel 15 with the vessel number N _B are sequentially aspirated in vessel units.

(B-5) Continuous Skip Suction Operation The continuous skip operation is an operation in which the suction start vessel is changed to perform automatic suction. For example, as shown in FIG. 8 (f), when the suction start vessel is set to the vessel number (J + 3), the vessel numbers (J + 4), (J + 5), ...
The continuous skip suction operation is to perform the automatic suction operation for each vessel 15 in the order of N _B , 1, 2, ..., (J + 1), (J + 2), and the automatic suction can be started from the vessel 15 desired by the operator. it can.

However, this continuous skip suction is not a mode designed mainly for blocking, but the operator should empirically know the tendency of dust accumulation in each vessel, and from which vessel should the suction sequence be started. It is the main purpose to judge and use it instead of the normal suction mode. However, it can also be used as a measure against obstruction if necessary. Since in the vessel suction already vessel number 1 is (J-1) example of FIG. 8 (f) with each other to complete, when utilizing the successive skip suction during occlusion, for example in the final vessel number N _B The suction sequence may be forcibly stopped.

． Operation of Embodiment (C-1) Suction Routine FIG. 9 is a flowchart showing a suction routine realized in an embodiment of the present invention.

Referring to the figure, first, in step S1, a suction mode selection process, which will be described in detail later, is performed. Then, in step S2, the vessels 15 from the suction start vessel number I _S selected in step S1 to the suction end vessel number _IE are selected.
Are automatically sucked sequentially in vessel units.

During execution of this automatic suction operation, steps S3 and S4 are always performed.
Interrupt check is performed. In step S3, ON / OFF check of the stop push button switch 68 is performed. When the stop push button switch 68 of the operation panel 34 is turned ON during the automatic suction, the interrupt process of step S7 is performed. Then, in step S7, the automatic suction is stopped and the process returns to step S1.

In step S4, the presence or absence of dust blocking trouble is checked from the negative pressure in the dust storage tank 32, and when it is determined that the dust blocking trouble has occurred, the process proceeds to step S6, and the display unit 62 of the operation panel 34 displays dust. A code symbol indicating that a blocking trouble has occurred is displayed (hereinafter, referred to as "blocking error display"), the automatic suction is stopped in step S7, and then the process returns to step S1.

When the interrupt processing in the steps S3, S4 does not occur until it is checked that the automatic suction is completed automatically aspirated in step S5 is made to the vessel 15 of the suction completion Bessel number I _E, step S3~S5 When the completion of automatic suction is checked in step S5, the suction routine ends.

(C-2) Suction Mode Selection Processing Routine FIG. 10 is a flowchart showing a suction mode selection processing routine which is the processing of step S1 in the flowchart of FIG. Note that the vessel numbers shown in this flowchart correspond to the vessel numbers shown in FIG. 8, and during suction operations other than the normal suction operation, dust clogging troubles occur during dust suction in the vessel 15 of vessel number J. Is assumed to have occurred.

Referring to the figure, first, in step S11, a suction mode is selected. When the normal suction mode is selected in step S11, the process proceeds to step S12 and subsequent steps.

The normal suction mode is set by pressing the suction push button switch 69 to turn it on when the display unit 62 of the operation panel is in the non-display state (the suction state is the initial state) as shown in FIG. 11A. .

In the normal suction mode, the suction start vessel number I _S is set to 1 in step S12, and the suction end vessel number I _E is set to N _B in step S13. And the ninth
By performing the automatic suction process which is the process after step S2 in the figure, the normal suction operation as shown in FIG. 8 (a) is performed. In addition, in FIG. 11A, “automatic suction display” means display of a vessel number during automatic suction. Also,
To forcibly stop the sequence during the normal suction operation, turn off the stop switch 68 as shown in FIG. 11B.
It may be N.

When the repeat suction mode is selected in step S11,
The process moves to step S14 and thereafter. In the repeat suction mode, as shown in FIG. 11C, when the display unit 62 is in the blockage error display state (when a dust blockage trouble occurs), the stop pushbutton switch 69 is maintained while maintaining the suction pushbutton switch 69 in the ON state. It is set by turning on / off 68. Immediately after the repeat suction mode is set, the first
As shown by the broken line in FIG. 1C, the suction push button switch 6
If the switch 9 is turned off before the stop push button switch 68, the repeat suction mode setting can be stopped.

In the repeat suction mode, the suction operation is performed for the vessel with the vessel number J in which the dust blocking trouble has occurred in step S14. Then, in step S15, it is checked whether or not the stop push button switch 68 has been turned on, and the automatic suction operation for the vessel 12 having the vessel number J is repeated until the stop push button switch 68 is turned on, so that FIG. Repeat suction operation as shown in c) is performed.

When the retry suction mode is selected in step S11,
Then, the process proceeds to step S16. The retry suction mode is
As shown in FIG. 11D, this can be set by turning on the suction push button switch 69 while the display unit 62 is displaying the current vessel number J of the suction target. Note that the 11th D
In the example of the drawing, while the display unit 62 is displaying the blockage error, the stop push button switch 68 is turned on to forcibly display the current vessel number J of the suction target.
Even when the dust blockage trouble is released by the repeat suction operation, the current vessel number J of the suction target is displayed on the display unit 62. Therefore, after the dust blockage trouble is released by the repeat suction operation, the suction push button switch 69 is pressed. Can also set the retry suction mode. .

In the retry suction mode, the suction start Bessel number I _S Bessel number J of dust clogging trouble has occurred in step S16, it sets the suction completion Bessel number I _E to N _B. Then, by performing automatic suction processing, FIG.
The retry suction operation as shown in (d) is performed.

When the skip suction mode is selected in step S11,
The process moves to step S17 and thereafter. In the skip suction mode, as shown in FIG. 11E, after the suction push button switch 69 is turned on while the occlusion error is displayed on the display unit 62, the stop push button switch 68 is kept off and the suction push button switch 69 is turned on. It is set by turning OFF. While the suction push button switch 69 is in the ON state, the vessel number J in which the dust blocking trouble has occurred is displayed to give the operator an opportunity to confirm.

In the step suction mode, in step S17, the suction start vessel number I _{S is set} to (J + 1) and the suction end vessel number I _E is set to N _D. Then, by performing the automatic suction processing, the skip suction operation as shown in FIG. 8 (e) is performed.

When the continuous skip suction mode is selected in step S11, the process proceeds to step S18 and subsequent steps. The continuous suction skip mode is set by turning on the suction push button switch 69 while maintaining the stop push button switch 68 in the ON state, as shown in FIG. 11F.

In the continuous skip suction mode, while maintaining the ON state of the stop push button switch 68 in step S18,
The number of times of skipping P is set by turning the suction push button switch 69 OFF and ON a desired number of times P (three times in the example of FIG. 11F) including setting. After that, when the suction push button switch 69 is in the ON state, the stop push button switch 68
By turning OFF, the suction process is started. After setting the skip count P, the suction push button switch 69 is turned off and the stop push button switch 68 is turned off, whereby the setting of the continuous skip mode can be canceled.

Then, the suction start Bessel number _{I S} at step S19 in (J + P), the suction completion Bessel number _{I E} (J + P-
Set to 1). In this way, continuous skip suction is performed by starting the automatic suction process.

In the example of FIG. 11F, the continuous skip suction mode is set while the display unit 62 is displaying the occlusion error, but the continuous skip suction mode may be set during no display (initial state). In this case, the vessel number J of the vessel 15 currently being suctioned is 1.

Since the selection of the above five suction modes can be performed by operating only the two push button switches 68 and 69, the number of operation buttons does not increase with the increase in the types of the automatic suction mode. In addition, repeat suction mode and skip suction mode can be selected only when dust blocking trouble occurs,
The operator does not mistakenly select these modes in the initial state.

As described above, since the suction routine of the present embodiment is provided with five automatic suction modes, the operator can appropriately select repeat suction, retry suction, skip suction, and continuous skip suction even when a dust blockage trouble occurs. Can fully respond.

〔The invention's effect〕

As described above, according to the present invention, when dust clogging trouble occurs, a mode can be arbitrarily selected from a plurality of suction resumption modes, and the resumption modes can handle various clogging situations. Because I have
There is an effect that appropriate measures can be taken when dust is blocked.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a dust collecting system which is a premise of an embodiment of the present invention, FIG. 2 is a sectional view of a dust suction vehicle which is a premise of the embodiment of the present invention, and FIGS. 3A and 3B are 2 is an explanatory plan view for explaining the operation of the dust suction pipe of the dust suction truck shown in FIG. 2, FIG. 4 is a front view showing the details of the operation panel installed in the cab of the dust suction truck, and FIG. The front view showing the details of the operation panel installed on the suction pipe, Fig. 6 is a block diagram showing the configuration of the control system of the dust collection system, and Fig. 7 is the negative pressure in the dust storage tank during the automatic suction operation. A graph showing changes with time, FIG. 8 is an explanatory view schematically showing five automatic suction operations, FIG. 9 is a flow chart showing a suction routine in an embodiment of the present invention, and FIG. 10 is a suction mode of FIG. The flowchart which shows the detail of a selection processing routine, FIG. FIG. 11F is an explanatory view showing the selection operation procedure of the suction mode, and FIG. 12 is an explanatory view showing the concept of the dust collection system. 15 ... Vessel, 30 ... Garbage suction truck, 32 ... Garbage storage tank, 33, 34 ... Operation panel, 35 ... Control device, 42 ... Suction blower, 88 ... Pressure sensor,

Claims (2)

[Claims] 1. A dust suction pipe line and a signal path are established between a plurality of dust storage tanks installed on the ground side and a dust suction vehicle, and the plurality of dust suction vehicles are connected from the dust suction vehicle via the signal path. While sequentially giving a tank selection signal to the dust storage tank side, negative pressure suction of dust from the selected dust storage tank to the dust suction truck via the dust suction pipe line is automatically performed in a predetermined order. In an automatic dust collection system, a dust suction control device mounted on the dust suction car, comprising: (a) a blockage for detecting dust clogging of the dust suction pipe by monitoring a negative pressure level in the dust suction car. Detection means, (b) suction interruption means for interrupting the negative pressure suction when dust clogging is detected, and (c) in response to a predetermined first operation, from the dust storage tank in which the suction interruption has occurred. Restart negative pressure suction according to the above order A first suction resuming means, and (d) a second suction resuming, in response to a predetermined second operation, restarting negative pressure suction from the tank next to the garbage storage tank in which suction has been interrupted in the order described above. And a dust suction control device. 2. The control device according to claim 1, further comprising: (e) in response to a predetermined third operation, a repetitive suction means for repetitively applying a negative pressure to the dust storage tank in which the suction interruption has occurred. And (f) in response to a predetermined fourth operation, start tank variable suction means for sequentially performing the negative pressure suction from the dust storage tank designated by the fourth operation, A dust suction control device.