JPH11124203A - Controlling method for waste suction - Google Patents

Abstract

PROBLEM TO BE SOLVED: To preliminarily suck waste from within a vessel when an inlet gate is not in a blocked state during an evacuation process and to smoothly suck waste within a dust shoot into a waste collection tank. SOLUTION: In an evacuation process both an inlet gate 8 and a lead-in gate 18 are operated to close so as to bring a discharge gate 14 into an open state, thereby evacuating the space within a vessel B to a predetermined maximum negative pressure. In case that a limit switch does not yet output an ON signal when the inlet gate is operated to close in the evacuation process, the lead-in gate is operated to open so that garbage G within the vessel is reduced by being preliminarily sucked from the discharge gate through a garbage transport tube 13 and a suction tube 22 into a garbage collection tank 24. Subsequently, the inlet gate is brought into an open state to perform a preliminary suction process, which leads waste within a dust shoot to the reduction space within the vessel, and then the evacuation process is performed again. At the time if the limit switch outputs an ON signal, the lead-in gate is operated to open so as to proceed to the next suction process to remove waste from within the vessel.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refuse suction control method for sucking and transporting refuse stored in a refuse storage container to a refuse storage tank or the like by means of a suction means. Pertaining to measures to smoothly suck and transport refuse that accumulates.

[0002]

2. Description of the Related Art Generally, for example, Japanese Patent Application Laid-Open No. 6-28680.
As disclosed in Japanese Unexamined Patent Publication No. 4 (1999), in a garbage suction transport device for sucking and transporting garbage, garbage is charged into a garbage storage container installed in an apartment house or the like from a dust chute via an input gate, is stored, and is periodically garbage collected. The refuse in the refuse storage container is collected by suction transportation of the suction truck. Specifically, the garbage storage tank of the garbage suction truck is connected to the garbage storage container via a garbage transport pipe, and both the input gate and the secondary air introduction gate of the garbage storage container are closed and the discharge gate is open. Then, after performing a negative pressure step of reducing the pressure of the refuse storage tank and the refuse storage container to a predetermined pressure by a suction device of a refuse suction vehicle, following the negative pressure step, the input gate and the secondary air A suction step of opening at least the secondary air introduction gate among the introduction gates and sucking the refuse in the refuse storage container into the refuse storage tank via the refuse transport pipe is performed. In this case, the input gate is provided near the connection between the dust chute and the refuse storage container.

[0003]

However, the amount of refuse stored in the refuse storage container is not always constant,
For example, when a large amount of garbage is produced, such as during the year-end and New Year holidays,
Waste that exceeds the amount stored in the waste storage container may be thrown in. In that case, even if the dust is thrown in from the dust chute, the dust does not fit in the dust storage container, and the dust accumulates above the input gate, that is, traces the dust chute. For this reason, even when performing a negative pressure step of reducing the pressure of the refuse storage tank and the refuse storage container to a predetermined pressure by the suction device of the refuse suction truck, refuse that accumulates retroactively on the dust chute is blocked by the closing operation of the input gate. The closing gate cannot be closed and the closing gate is not closed. In such an unblocked state, the outside air that has passed through the dust chute is introduced into the refuse storage container from the gap generated by the refuse in the charging gate, and the refuse storage container cannot be reduced to a predetermined pressure. For this reason, it is impossible to shift to the suction step of sucking the refuse in the refuse storage container into the refuse storage tank via the refuse transport pipe after the negative pressure step.

[0004] The present invention has been made in view of such a point, and an object of the present invention is to reduce the pressure of a refuse storage container to a predetermined negative pressure value due to an unblocked state of a charging gate in a negative pressure step. By pre-suctioning the refuse in the refuse storage container until the closing state of the input gate is obtained, a large amount of refuse is retroactively sucked into the refuse storage tank through the dust chute.

[0005]

Means for Solving the Problems In order to achieve the above object, a solution taken by the invention according to claim 1 is to remove refuse stored in a refuse storage container from a dust chute via an input gate via a discharge gate. When sucking out of the storage container,
The input gate is closed and the discharge gate is opened, and in this state, the inside of the refuse storage container is reduced to a predetermined pressure, and then the introduction gate of the garbage storage container is opened to operate the refuse storage container. A garbage suction control method for introducing outside air into the garbage storage container and sucking garbage in the garbage storage container out of the garbage storage container through the discharge gate is assumed. If the closing state detecting means for detecting the closing state of the input gate does not operate during the closing operation of the input gate, the introduction gate is opened to discharge the refuse in the refuse storage container through the discharge gate and the refuse storage container. Preliminary suction outside to reduce weight,
Thereafter, the charging gate is opened to introduce the dust in the dust chute into the reduced space in the dust container, and then the pressure in the dust container is reduced again.

The solution taken by the invention according to claim 2 is as follows:
The dust suction control method presupposed in the invention according to claim 1 is also premised, and the pressure inside the refuse storage container is reduced to a predetermined pressure within a predetermined lapse time after the closing operation of the charging gate during the closing operation of the charging gate. If not, the introduction gate is opened and the waste in the refuse storage container is pre-suctioned through the discharge gate to the outside of the garbage storage container to reduce the amount of waste. Thereafter, the input gate is opened and the refuse in the dust chute is opened. Is introduced into the reduced space in the refuse storage container, and then the pressure in the refuse storage container is reduced to a negative pressure again.

According to the first and second aspects of the present invention, when the closing operation of the charging gate is not performed, or when the closed state detecting means is not operated or the waste storage container is not reduced to the predetermined pressure within the predetermined time, The introduction gate is opened and the waste in the waste storage container is pre-suctioned to the outside of the waste storage container through the discharge gate to reduce the amount of waste in the waste storage container. Then, the charging gate is opened to introduce the refuse accumulated in the dust chute into the reduced space in the refuse storage container due to the preliminary suction. This preliminary suction is repeatedly performed until the closing state detecting means is operated or the refuse storage container is depressurized to a predetermined pressure within a predetermined time during the closing operation of the charging gate, and thereby the biting is performed by the closing operation of the charging gate. The accumulated dust in the dust chute is removed and the closed state of the input gate is obtained. By reducing the pressure of the dust storage container again, the dust in the dust storage container is smoothly sucked and transported.

[0008] The solution means taken by the invention of claim 3 is:
In addition to the constituent features of the invention according to claim 1 or 2, when the inside of the refuse storage container is again negatively pressurized after the preliminary suction,
The introduction gate is closed after the closing operation of the input gate is completed.

According to the third aspect of the present invention, there is a concern that the dust in the refuse storage container may be hollow due to the flow of the outside air introduced into the refuse storage container via the charging gate after the preliminary suction. However, when the introduction gate closes after the closing operation of the input gate is completed, even if the outside air from the introduction gate is finally introduced into the refuse storage container and the refuse in the refuse storage container is hollow, The hollow waste is broken by the wind direction change due to the flow of outside air from the introduction gate after blocking the flow of outside air from the input gate, and the waste storage efficiency in the waste storage container is not hindered by the hollowing Improve effectively.

[0010] The solution taken by the invention according to claim 4 is as follows.
In addition to the constituent features of the invention according to any one of claims 1 to 3, the negative pressure in the refuse storage container is stopped when the preliminary suction has been performed a predetermined number of times or more. .

Thus, in the invention according to the fourth aspect, even if the preliminary suction is repeated a predetermined number of times, the closing state detecting means is not operated during the closing operation of the charging gate, or the refuse storage container is reduced to a predetermined pressure within a predetermined time. If not, it is determined that the input gate is abnormal, and it is possible to prevent wasteful pre-suction from being performed more time.

Further, a solution taken by the invention according to claim 5 is characterized in that the suction means according to any one of claims 1 to 4 is specified. Specifically, after sucking the refuse in the refuse storage container through the transport pipe connected to the discharge gate to the refuse storage tank, the amount of refused suction is determined by the size of the refuse storage container and the number of times of preliminary suction. Calculate based on Then, according to the calculated value of the refuse amount or the remaining capacity of the refuse storage tank, refuse is compressed by the compression means provided in the refuse storage tank so that refuse is not blocked in the refuse storage tank. I have. Thus, according to the fifth aspect of the present invention, by performing the preliminary suction, garbage (garbage in the garbage storage container and garbage in the dust chute) far exceeding the garbage storage amount of the garbage storage container is suction-transported into the garbage storage tank. However, by calculating the amount of waste in consideration of the number of times of the preliminary suction, the calculation error of the amount of waste transported by suction and the remaining capacity in the waste storage tank is reduced, and the compression means is used at an appropriate timing. A compression action is inserted to reliably prevent clogging by dust in the waste storage tank.

[0013]

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

Before describing the refuse suction control method according to the present invention, a refuse suction transport apparatus to which the refuse suction control method is applied will be described.

FIG. 1 shows a configuration of a garbage suction / transport apparatus to which a garbage suction control method according to a first embodiment of the present invention is applied. Is temporarily stored in a vessel B as a refuse storage container, and the stored refuse G is sucked by a suction device 23 (described below) of a refuse suction vehicle V so as to be stored in a refuse storage tank 24 described below. It is composed.

The vessel B is provided in a garbage storage X below the building (not shown). An opening 5 is formed in the upper wall of the vessel B, and the lower end of a dust chute 6 extending vertically across each floor of the building is connected to the opening 5. The dust chute 6 is provided with an inlet 7 (only one is shown in the figure) for each required floor. The opening 5 is provided with a closing gate 8 for opening and closing the opening 5, and the closing gate 8 is opened and closed by the expansion and contraction of the air cylinder 9. A limit switch 1 as a closed state detecting means for detecting the closed state of the input gate 8 is provided near the input gate 8.
0 is provided.

An outlet 11 is provided at a lower portion of the side wall of the vessel B.
The discharge port 11 is connected to a refuse transport pipe 13 as a transport pipe via a funnel-shaped connecting member 12. A discharge gate 14 for opening and closing the waste transport pipe 13 is provided near the discharge port 11 of the waste transport pipe 13, and the discharge gate 14 is opened and closed by the expansion and contraction of an air cylinder 15. . The discharge gate 14
Although not shown, a detector for detecting the opening / closing operation of the discharge gate 14 is provided in the vicinity of.

A secondary air inlet 16 is formed at a lower portion of the side wall of the vessel B. The secondary air inlet 16 is provided at one end of the inlet pipe 17, and the other end of the inlet pipe 17 is open to the atmosphere so that outside air can be supplied into the vessel B. The introduction pipe 17 is provided with an introduction gate 18 for opening and closing the introduction pipe 17, and the introduction gate 18 is opened and closed by the expansion and contraction of an air cylinder 19. Although not shown, a detector for detecting the opening / closing operation of the introduction gate 18 is also provided near the introduction gate 18. In this case, the opening 5 is provided with the secondary air inlet 16
The opening area is larger than the opening area.

The refuse transport pipe 13 extends to the docking station D and is detachably connected to a suction pipe 22 extending from the refuse suction truck V by a coupling 21. Further, in the coupling 21,
At the time of connection with the suction pipe 22, the control device 61 of the garbage suction vehicle V
(To be described later) and the gates 8, 14, and 18 are connected by a control signal cable (not shown). Each of the air cylinders 9, 15, 19 is
An air source (not shown) composed of a compressor tank and the like provided in the garbage suction truck V by an air hose (not shown)
Via the docking station D. The air source may be provided on the vessel B side.

Here, the configuration of the dust suction vehicle V will be described with reference to FIG.

The refuse suction vehicle V has a suction device 23 and a refuse storage tank 24 for storing refuse G sucked by the suction device 23, which are mounted on the front and rear of the chassis Va, respectively.

As shown in FIG. 7, the suction device 23 comprises:
One end is connected to the refuse storage tank 24, and the other end is provided with a suction passage 31 that opens to the atmosphere. A water scrubber 32 is interposed in the suction passage 31, and the suction passage 3 closer to the open air side (the other end side) than the water scrubber 32.
1 is provided with a blower 33. A silencer 34 is interposed in the suction passage 31 on the side closer to the atmosphere than the blower 33. The blower 33 operates at a rotation speed corresponding to the engine rotation speed of the dust suction vehicle V when the engine is driven, and the dust storage tank 24 and the vessel B are made to have a negative pressure by the operation of the blower 33. .

The other end of an open pipe 35 whose one end is open to the atmosphere is connected to the suction passage 31 closer to the refuse storage tank 24 (one end side) than the war task rubber 32, and the open pipe 35 is connected to the open pipe. An open-to-air valve 36 for opening and closing 35 is provided. In the suction passage 31 between the water scrubber 32 and the blower 33, a pressure sensor 37 for detecting a negative pressure value by the blower 33 is provided. Further, the blower 3 is provided between the suction passage 31 on the dust storage tank 24 side (suction side) with respect to the blower 33 and the suction passage 31 on the atmosphere open side (discharge side) with respect to the blower 33.
3 is provided. A blower unload valve 39 is interposed in the bypass pipe 38. By controlling the opening and closing of the blower unload valve 39, the negative pressure value of the blower 33 is maintained at a predetermined level during the suction and transportation of the refuse G described later. ing.

As shown in FIG. 2, the suction pipe 22 has an inlet 4 opening at the front end of the upper wall of the refuse storage tank 24.
An elbow-shaped swivel tube 41 connected to the swivel tube 0 is provided, and the swivel tube 41 is capable of turning in both left and right directions around a vertical axis. A proximal end of a first flexible tube 42 is connected to a distal end of the revolving tube 41 and freely flexes from a stored state extending in the vehicle longitudinal direction. The distal end of the first flexible tube 42 is connected to the base end of a tilting tube 43 extending in the front-rear direction of the vehicle body. The tilting tube 43 is vertically tiltable by the expansion and contraction of a tilting cylinder 47. This tilting tube 43 includes a telescopic tube 44.
And the distal end of the telescopic tube 44 is inclined tube 43
To expand and contract horizontally. The distal end of the telescopic tube 44 is connected to the proximal end of a second flexible tube 45 that is freely flexible from a stored state extending in the vertical direction. That is, the suction pipe 22 is composed of the swirl pipe 41 and the first flexible pipe 4.
2. It is constituted by the tilting tube 43, the telescopic tube 44 and the second flexible tube 45.

When the dust suction truck 22 stops the dust suction truck V at the docking station D during the dust suction transportation, the turning operation of the turning tube 41, the tilting operation of the tilting tube 43, and The distal end of the suction pipe 22 (the second flexible pipe 45) is easily connected to the docking station D by the expansion / contraction operation of the expansion / contraction pipe 44, and the refuse storage tank 24 and the vessel B communicate with each other via the refuse transport pipe 13. It has become.

An opening 2 is provided at the rear end of the refuse storage tank 24.
4a is formed, and the opening 24a is configured to be openable and closable by an opening / closing door 46 (door) that is supported by the upper end edge and opens rearward and downward. The opening / closing door 46 includes an opening / closing cylinder 48.
The opening and closing operation is performed by the expansion and contraction movement of. The opening / closing door 46 has a holder 46a for holding the distal end of the suction tube 22 (the distal end of the second flexible tube 45) in a stored state.
Is provided.

A compression plate 51 as a compression means is slidably disposed in the front and rear direction of the vehicle body inside the refuse storage tank 24. A telescopic cylinder 52 is connected between the front surface of the compression plate 51 and the front wall of the refuse storage tank 24. The compression plate 51 moves forward (pulling operation) by the contraction movement of the telescopic cylinder 52, while the compression plate 51 moves rearward (pushing operation) by the extension movement of the telescopic cylinder 52. That is, the compression plate 51 has a front suction / transport position (a position indicated by a solid line in FIG. 2) and a rear discharge position (a position indicated by a two-dot chain line in FIG. 2).
And slide between them.

The telescopic cylinder 52 is provided with a hydraulic pressure sensor 50 (shown in FIG. 2) for detecting the hydraulic pressure of the compression cylinder 52.
The compression value of the compression plate 51 at the time when 1 slides backward to perform the compression operation of the dust G is detected.

The compression plate 51 has a chute portion 51a on the upper rear surface and a compression portion 51b on the lower rear surface. When the compression plate 51 is positioned at the suction transport position at the start of dust suction, the chute portion 51a is provided at the base end of the suction pipe 22 (the base end of the revolving pipe 41).
, The dust G sucked through the suction pipe 22 is blown to the rear side in the dust storage tank 24 by the chute 51a together with the inertia force due to the suction.

As shown in FIG. 8, a first suction port 53 is formed in an upper wall near the inlet 40 of the refuse storage tank 24, and a first suction port 53 is formed at a corner between the upper wall and the front wall. Also, second and third suction ports 54 and 55 are formed respectively. The first suction port 53 passes through the second and third suction ports 54, 55 at the corners of the refuse storage tank 24, and passes through the suction passage 31.
And the above-mentioned blower 3
3, the suction ports 53 to 55 and the introduction ports 4
0, Vessel B via suction pipe 22 and waste transport pipe 13
The inside air is sucked, and thereby the vessel B and the refuse storage tank 24 are made to have a negative pressure.

A filter 56 such as a punched metal is provided in the first suction port 53 on the upper wall of the refuse storage tank 24, and the refuse G sucked into the refuse storage tank 24 during the suction transportation is subjected to the first suction. Suction passage 31 from mouth 53
To avoid intruding into the side. A cover 57 is attached to the upper surface of the upper wall of the refuse storage tank 24, and the cover 57 forms a suction passage between the first suction port 53 and the second suction port 54. .

As shown in FIG. 1 and FIG. 2, a control device 61 is provided in the refuse suction vehicle V. The control device 61 is also configured to receive various detectors such as the limit switch 10 provided in the vessel B and detection signals from the pressure sensor 37 and the oil pressure sensor 50. Based on these detection signals and the like, the control device 61 controls the input gate 8 and the output gate 1 of the vessel B.
4 and the introduction gate 18 are controlled to be opened and closed, and the refuse G in the vessel B is sequentially sucked and transported to the refuse storage tank 24. The refuse G from the vessel B is suctioned and transported by a suction pattern that is repeatedly performed according to the size of the vessel B, and is sequentially stored in the refuse storage tank 24 by the compression operation of the compression plate 51.

In this control device 61, the virtual waste amount Q (see FIG. 4) that will be suction-transported to the waste storage tank 24 by the waste suction-transport operation (suction pattern) from the vessel B when the waste G is suction-transported. It can be obtained from the size of the vessel. Therefore, the control device 61
By recognizing the size of the vessel B performing the garbage suction and transport operation, the virtual garbage amount Q stored in the garbage storage tank 24 can be grasped from the vessel B. The control device 61 is controlled to perform the dust compression operation of the compression plate 51 by the telescopic cylinder 52 at a predetermined timing set in advance. In this dust compression operation, the compression plate 51 is moved backward from the suction transport position to the dust discharge position side, and the waste G in the waste storage tank 24 is compressed while being moved backward by the front surface of the compression plate 51. The process is performed every time the total sum of the virtual waste amount Q reaches a margin value M described later. And
In performing the dust compression operation by the compression plate 51, first, a backwash operation is performed. In this backwashing operation, after depressurizing the refuse storage tank 24, by opening the atmosphere release valve 36, outside air is introduced from the open pipe 35 into the refuse storage tank 24 through the respective suction ports 53 to 55, Thereby, the first suction port 5
In addition to removing the attached matter such as paper and tape adhered to the filter 56 of No. 3, the dust G near the first suction port 53 is removed, and if the dust G remains in the suction pipe 22, the dust G is removed. This is an operation of temporarily returning to the docking station D side. In this case, when the virtual waste amount Q sucked and transported by the suction pattern from the single vessel B does not reach the margin value M, the waste G is sequentially sucked and transported over a plurality of vessels, and the sum thereof is calculated. The margin value M (see FIG. 4) that requires the dust compression operation is set.

In the control device 61, when the blower 33 of the suction device 23 is operated to perform the dust suction / transport operation, the injection gate 8 needs to be closed.
When the ON signal from the limit switch 10 for detecting the closed state of the closing gate 8 is not obtained even when the closing gate is closed (when the closing gate 8 is not closed),
It is determined that the amount of the refuse G input from the dust chute 6 is too large to be contained in the vessel B and the refuse G accumulated in the dust chute 6 is caught by the closing operation of the input gate 8. For the time being, the stored waste G in the vessel B is temporarily stored in the waste storage tank 24 through the waste transport pipe 13 and the suction pipe 22 at a current negative pressure value, that is, a negative pressure value less than a predetermined maximum negative pressure value, from the discharge gate 14. Preliminary suction is performed. Due to this preliminary suction, the amount of stored dust G in the vessel B is reduced, and the accumulated dust G in the dust chute 6 is introduced into the reduced space to remove the accumulated dust G in the dust chute 6. This preliminary suction is performed a plurality of times, for example, five times, until the closed state of the input gate 8 is obtained.

Further, as shown in FIG. 9, the control device 6 is provided on the right side of the casing 23a of the suction device 23.
1 is provided with an operation panel 60 for outputting a command signal.
A monitor 62 is disposed above the operation panel 60. The monitor 62 displays the state of suction of the refuse G by the suction device 23 and the number of the vessel B (e.g., 10
No. etc.) are displayed. This monitor 6
The number of the vessel B displayed in 2, more precisely, the number of the vessel number Bm to be described later, is subtracted and updated each time the transport is completed by repeatedly performing a predetermined suction pattern according to the size of the vessel B, and The number of the vessel number Bm which is one smaller than B is displayed.

A suction start operation switch 63 for starting suction by the suction device 23 is provided on the lower left side of the operation panel 60. This suction start operation switch 6
3 is turned ON when suction transport of the refuse G from the vessel B is started, and the refuse storage tank 24
Every time the virtual waste amount Q stored in the waste storage tank 2 reaches the margin value M that requires a preset waste compression operation, the waste compression operation by the compression plate 51 is automatically performed, and the waste storage tank 2
4, so that the suction transport of the refuse G can be smoothly performed. Further, at the lower right end of the operation panel 60, a stop operation switch 65 for stopping the suction operation by the suction device 23 or the compression operation of the dust G by the compression plate 51 is provided.
The stop operation switch 65 is provided for removing the waste G from the vessel B.
Is turned on to end the suction transport of the waste or to stop the compression operation of the refuse G.

Next, a plurality of waste suction vehicles V
An example of a waste suction control method for sucking and transporting waste G to the waste storage tank 24, that is, control of opening and closing of the input gate 8, the discharge gate 14, and the introduction gate 18 by the control device 61 based on the flowcharts of FIGS. Will be explained.

In this case, the garbage suction truck C is provided at the garbage storage X
To the docking station D and stop.
1 and the tilting operation of the tilting tube 43 and the telescopic tube 44
The suction tube 22 (second flexible tube 45) by the expansion and contraction operation of
Is connected to the docking station D, so that the waste storage tank 24 and the vessel B are communicated via the waste transport pipe 13. In addition, by connecting the suction pipe 22 and the docking station D, each detector such as the limit switch 10 of the vessel B and the pressure sensor 37 are connected.
Such a detection signal is input to the control device 61.

First, step S in the flowchart of FIG.
In 1, the total number of vessels B in the garbage storage X is "15"
Is input to the counter CNT for subtracting and updating each time the suction is completed, and the monitor 62 displays, like the counter CNT, the vessel number B for subtracting and updating each time the suction of the vessel B is completed.
Display the maximum value of m. In this case, the maximum value "No. 15" of the vessel number Bm is displayed on the monitor 62. However, when continuing the previous suction transport of the garbage G, the garbage storage site X side continues the previous suction transport number. For example, when the previous suction and transport of the refuse G has ended at the vessel number B6, the monitor 62 displays the vessel number B5 (the maximum value of the current vessel number) at which the current suction and transport of the refuse G is started. Will be displayed. Therefore, the counter C
NT is a variable that counts the number of unsucked vessels, and Vessel Bm is a variable that specifies the vessel B to be sucked. Therefore, the values of both variables do not always match.

Next, in step S2, the operation panel 6
By turning on the suction start operation switch 63 of 0, the blower 33 of the suction device 23 is operated. Then, step S3
Then, after clearing the number of executions i of the preliminary suction step to 0,
In step S4, the discharge gate 14 is operated by the air cylinder 15.
Is opened, and then in step S5, the air cylinder 9 is opened.
The closing gate 8 is closed. Then, in step S6, it is determined by the limit switch 10 whether or not the closing gate 8 is closed. When the ON signal of the limit switch 10 in which the closing gate 8 is closed is output, the process proceeds to step S11 in FIG.

In step S11, the amount of waste stored inside the vessel B is written as the virtual waste amount Q based on the size of the vessel B, and the flow advances to step S12. In this case, since the number i of executions of the preliminary suction step in step S3 is 0, the amount of waste stored inside the vessel B is written as the virtual waste amount Q as it is.

In step S12, the pressure in the vessel B is reduced in accordance with the negative pressure in the refuse storage tank 24 by the blower 33 of the suction device 23. In step S13, the blower 33
The pressure sensor 3 determines whether or not the negative pressure is a predetermined maximum negative pressure value.
The pressure in the vessel B is reduced until the negative pressure of the blower 33 reaches a predetermined maximum negative pressure value. In this case, the above steps S2 to S6 and step S11
Step S13 constitutes a negative pressure step of reducing the pressure in the vessel B to negative pressure.

After completion of the depressurization in the vessel B, the process proceeds to step S14.
A compression flag FLG for starting a compression operation routine to be described later is checked, and if the compression flag FLG is “0”, the process proceeds to step S15. In this step S15, the introduction gate 18 of the vessel B is opened and secondary air is introduced into the vessel B from the secondary air introduction port 16.
As a result, the refuse G in the vessel B is sucked and transported from the discharge gate 14 into the refuse storage tank 22 through the refuse transport pipe 13 and the suction pipe 22 while being tumbled.
A cycle suction pattern will be performed.

Thereafter, in step S16, it is determined whether or not re-suction is necessary in accordance with the size of the vessel B. If YES is determined that re-suction is required, the process returns to step S12 to change the suction pattern. On the other hand, the operation is repeated (in this case, the ON operation of the suction start operation switch is unnecessary), and if unnecessary, the process proceeds to step S17. In this step S17, the cumulative capacity ΣQ of the virtual waste amount Q when the suction transport of the waste G is performed over the plurality of vessels B, and the full capacity that can be stored in the waste storage tank 24 (the waste compression operation must be performed). If the capacity is equal to the tank capacity, but the capacity is larger than that for performing the garbage compression operation). In this case, garbage G
Is performed across a plurality of vessels B, the cumulative capacity ΔQ of the virtual waste amount Q increases each time the waste G is sucked and transported. Then, the above step S
At 17, when the accumulated capacity ΣQ exceeds the full capacity of the refuse storage tank 24, the process proceeds to step S26, where "full" is displayed on the monitor 62 of the operation panel 60, and the control is terminated. In this case, the accumulated capacity ΣQ is a variable that is cleared to “0” when the waste G in the waste storage tank 24 is discharged.

On the other hand, if the determination in step S17 is NO, in which the cumulative capacity ΣQ of the virtual waste quantity Q is smaller than the full capacity of the waste storage tank 24, step S17 is performed.
At 18, when the garbage G is sequentially sucked and transported into the garbage storage tank 24 by a suction pattern that is repeatedly performed,
Inlet 40 of refuse storage tank 24 without refuse compression operation
The virtual waste amount Q is subtracted from a margin value M, which has a margin more than a limit value of the waste volume at which the waste G can be sucked without a blockage trouble in the vicinity. In this case, the margin value M is
Garbage storage tank 2 in the same way as the cumulative capacity of virtual waste amount QΣQ
4 is a variable that is initialized to a predetermined value when the dust G is discharged from the inside, and is an empirical value obtained by an experiment.

Then, in step S19, the sign of the subtraction value (M−Q) is determined in step S18. If the virtual waste amount Q is smaller than the margin value M, the subtraction value (M−Q) becomes positive. In this case, it is determined that the suction transport of the waste G can be continued without performing the waste compression operation, and the process proceeds to step S21.

On the other hand, when the virtual waste amount Q exceeds the allowance value M and the subtraction value (M−Q) becomes negative, the intake port 40 of the waste storage tank 24 is continued when the waste G is continuously suctioned and transported. It is determined that a blockage may be caused in the vicinity, and step S
Go to 20. Then, in step S20, the compression flag FLG in step S14 is set to "1". The compression flag FLG is initialized to “0” when the suction pipe 22 is connected to the docking station D for the first time.

Thereafter, in step S21, the counter CNT is checked to determine whether or not the waste G in all the vessels B of the waste storage site X has been sucked and transported. That is, even if suction transport is started from any vessel B subsequent to the previous suction transport of the refuse G, if the counter CNT is "1", it means that all the vessels B of the refuse storage area X have been cycled. Therefore, if the determination in step S21 is YES that the counter CNT = 1, the monitor 62 of the operation panel 60 is determined in step S27.
"End of suction of vessel" is displayed on the display, and the operator who has seen this display turns off the stop operation switch 65 of the operation panel 60 to stop the blower 33 of the suction device 23. On the other hand, if the determination in step S21 is NO where the counter CNT is not 1, the vessel number B is determined in step S22.
m is decremented by one, and the process proceeds to step S23.

In this step S23, it is determined whether or not the vessel number Bm is equal to or less than "0", and the vessel number Bm is determined.
Is less than or equal to "0", the process proceeds to step S24.
Then, after returning the vessel number Bm to the maximum vessel number of the waste storage base X, the process proceeds to step S25. In step S25, the counter CNT is decremented by one, and the process returns to step S3, as in the case where the determination in step S23 is NO where the Bessel number Bm is larger than "0". In this case, the above steps S14 to S2
5 constitutes a suction step for sucking and transporting the refuse G in the vessel B, which is performed following the negative pressure step.

On the other hand, if the determination in step S14 is YES that the compression flag FLG = 1, the backwash operation is performed in step S31 in FIG.
The dust compression operation is performed in Step 2. After the refuse storage tank 24 is made to have a negative pressure by this backwashing operation, the atmosphere release valve 36 is opened, and the outside air from the open pipe 35 is introduced into the refuse storage tank 24 via the suction ports 53 to 55, Debris and dust G near the first suction port 53 are removed, and the dust G in the suction pipe 22 is returned to the docking station D side.

The dust compression operation in step S32 will be described later. After the dust compression operation is completed, in step S33, the compression flag FLG is cleared to "0", and the flow advances to step S34. In this step S34,
The compression request value Ct is subtracted by a fixed amount K. Thereafter, in step S35, it is determined whether or not the required compression value Ct is a lower limit value (lower value ≧ constant amount K). If YES in step S37, the required compression value Ct is the lower limit value. The required value Ct is set to the lower limit. Thereafter, in step S36, the required compression value Ct is not the lower limit value.
As in the case of (1), the process proceeds to step S38, and the initial value of the margin value M in step S18 is determined. Specifically, according to the size of the garbage storage tank 24, the garbage storage tank 2
The initial value of the margin value M is determined by the required compression value Ct which is reset to a predetermined value (initial required compression value) when the waste G in 4 is discharged. That is, the predetermined value of the required compression value Ct is the same as the initial value of the margin value M, and the margin value M which has become a negative value for performing the dust compression operation is returned to the value of the required compression value Ct.

Next, the compression operation of step S32 will be described with reference to the compression routine of FIG.

First, in step S41 of FIG. 6, the suction by the blower 33 is temporarily stopped. Then, step S
At 42, the telescopic cylinder 52 is extended to
1 is started to move backward (compression operation) to the compression position (the position indicated by the two-dot chain line in FIG. 2), and time measurement is started in step S43.

Thereafter, in step S44, the hydraulic pressure sensor 50 determines whether the hydraulic pressure of the telescopic cylinder 52 (the compression value of the compression plate 51) is equal to or greater than the hydraulic pressure limit value P1.
Y in which the oil pressure of the telescopic cylinder 52 is equal to or higher than the oil pressure limit value P1.
In the case of ES, it is determined that the dust compression operation by the compression plate 51 has been completed, and the process proceeds to step S46. On the other hand, if the determination in step S44 is NO that the hydraulic pressure of the telescopic cylinder 52 is less than the hydraulic pressure limit value P1, the process proceeds to step S45.
In, it is determined whether the time measurement in step S83 has expired. In the determination in step S45, the amount of retreat movement of the compression plate 51 until the compression plate 51 reaches the maximum compression position is measured in time. By moving the compression plate 51 backward until the compression plate 51 reaches the maximum compression position, the dust compression operation is performed. To do.

If the determination in step S45 is NO that the time is not over, the process waits until the time is over.
Proceed to. In this step S46, the hydraulic pressure of the telescopic cylinder 52 is increased by the hydraulic pressure sensor 50 to a predetermined value P2 (P2 <P2).
1) It is determined whether it is the above or not. The determination in step S46 indicates that the hydraulic pressure of the telescopic cylinder 52 is equal to the predetermined value P
In the case of YES which is 2 or more, it is determined that the refuse G remains to some extent in the refuse storage tank 24, and step S4
At 7, the compression holding flag KF is set to "1".
Accordingly, when the determination in step S46 indicates that the hydraulic pressure of the telescopic cylinder 52 is less than the predetermined value P2, it is determined that there is almost no dust G in the dust storage tank 24, and the compression holding flag PF is set to “0”. So that the suction pipe 22 is connected to the coupling 21 of the docking station D when the suction operation is completed and the suction pipe 22 is moved to another waste storage area.
Even if the connection with the compression plate is released, the compression of the compression plate 51 is not performed by the moving compression plate 51, and the time required for the pulling operation of the compression plate from the compression position to the suction transport position in another garbage storage site is reduced. G can be quickly transported by suction.

Thereafter, the determination in step S46 is
As in the case of NO in which the hydraulic pressure of the telescopic cylinder 52 is less than the predetermined value P2, the process proceeds to step S48,
At 48, the telescopic cylinder 52 is contracted to
Move 1 forward. Thereafter, in step S49, the compression plate 51 is moved to the suction transport position (the position indicated by the solid line in FIG. 2).
, The dust compression operation ends, and the process returns to step S1.

On the other hand, the determination in step S6 is based on the determination that the limit switch 10 in which the closing gate 8 is not closed is turned on.
When the signal is not output, the amount of the refuse G input from the dust chute 6 is too large, and the refuse G accumulated in the dust chute 6 without being contained in the vessel B is caught by the closing operation of the input gate 8. Is determined to be present, and the process proceeds to step S51. In this step S51, it is determined whether or not the number of executions i of the preliminary suction step is the limit number of times “5”,
If the execution number i of the preliminary suction step is smaller than the limit execution number “5”, that is, NO, in step S52, the execution number i of the preliminary suction step is incremented by one, and then step S52 is performed.
Go to 53.

In this step S53, the introduction gate 18 of the vessel B is in spite of the fact that the inside of the vessel B is not sufficiently depressurized due to the unblocked state of the introduction gate 8.
Is opened by the air cylinder 19, secondary air is introduced into the vessel B from the secondary air inlet 16, and
The time measurement from the opening gate 8 opening time is started. As a result, the stored refuse G in the vessel B is preliminarily sucked into the refuse storage tank 24 via the refuse transport pipe 13 and the suction pipe 22 from the discharge gate 14 at a negative pressure value less than the predetermined maximum negative pressure value. Vessel B by preliminary suction
The amount of stored waste G inside can be reduced.

Next, in step S54, the opening gate 8 of the vessel B is opened by the air cylinder 9. Thereby, the introduction gate 1 in the above step S53
8 in the reduced space in the vessel B formed by the preliminary suction by the opening operation of the dust 8 in the dust chute 6
Can be introduced through the inlet 7.

Thereafter, in step S55, it is determined whether or not the time measurement in step S53 has expired. After waiting until the time measurement has expired, in step S56, the introduction gate 18 of the vessel B is moved to the air cylinder. A closing operation is performed by 19, and the process returns to step S5. In the time measurement in step S55, the time when the introduction gate 8 is in the open state, that is, the time for the preliminary suction for sucking and transporting the garbage at a negative pressure value less than the predetermined maximum negative pressure value is measured. At the time of storage garbage G in vessel B
Is set so as not to be blocked in the middle of the refuse transport pipe 13 and the suction pipe 22. The pre-suction process in steps S5 and S6 and steps S51 to S56 is repeatedly performed until the number i of executions of the pre-suction process reaches the limit number “5” in the determination in step S51. 8 in the dust chute 6 that has been caught by the closing operation of the dust 8
Is removed by introduction into the vessel B, the closing state of the input gate 8 is changed to the limit switch 10 in step S6.
Is confirmed by the output of the ON signal of step S2, following the negative pressure step of steps S2 to S6 and steps S11 to S13,
The process shifts to the suction step from step 14 to step S25, and the dust G in the vessel B can be smoothly suctioned and transported.

For example, when the number of executions is "4" in the determination in step S51, the number of executions is incremented by one in step S52, and the fifth last preliminary suction step is performed. If the closing state of the input gate 8 is obtained, in step S11, the amount of waste Bq stored inside the vessel B according to the size of the vessel B and the amount of corrected waste that will be suctioned and transported in one preliminary suction step. Sum value (calculated value) with the integrated value obtained by integrating the number of executions "5" to q
Is written as the virtual waste amount Q. As a result, the waste volume (the sum of the waste amount Bq of the vessel B and the corrected waste amount q × 5) far exceeding the waste amount Bq of the vessel B is sucked and transported into the waste storage tank 24 by performing the preliminary suction step. Therefore, by calculating the waste volume (virtual waste amount Q) in consideration of the number of executions of the preliminary suction step “5”, the suction transport amount of the waste G and the waste storage tank 2
The calculation error of the remaining capacity in the storage container 4 becomes small, the compression operation of the waste by the compression plate 51 can be inserted at an appropriate timing, and the clogging by the waste G in the waste storage tank 24 can be reliably prevented.

On the other hand, if the determination in step S51 is YES that the number of executions i of the preliminary suction step is the limit number of times “5”, the process proceeds to step S57, and the monitor 62 of the operation panel 60 displays “input gate abnormality”. Is displayed and the control of the preliminary suction step is ended. As a result, even if the number of executions of the preliminary suction step is repeated five times, when the ON signal of the limit switch 10 is not detected in the negative pressure generation step, it is determined that the input gate 8 is abnormal, and further wastefulness is obtained. It is possible to prevent wasting time by performing the preliminary suction step.

Next, a second embodiment of the present invention will be described with reference to FIGS.

In the second embodiment, an unblocked state of the closing gate is detected by a negative pressure value in the vessel instead of the limit switch.

That is, in this embodiment, as shown in FIG. 10, a vessel internal pressure sensor 71 for detecting a negative pressure value in the vessel B is provided in the vessel B. Further, the control device 61 receives a detection signal of the vessel internal pressure sensor 71 and a time-up signal (measurement completion signal) from a timer (see FIG. 11) for measuring an elapsed time after the closing operation of the closing gate 8. Is also entered. Then, the control device 61 determines whether or not the pressure in the vessel B has been reduced to a predetermined maximum negative pressure value within a predetermined elapsed time by a timer after the closing operation of the injection gate 8 in the negative pressure forming step. Is made.
The configuration other than the vessel internal pressure sensor and the timer is the same as that of the above-described embodiment, and the same portions are denoted by the same reference numerals and detailed description thereof will be omitted.

Next, a plurality of garbage suction vehicles V
The opening / closing control of the input gate 8, the discharge gate 14, and the introduction gate 18 by the control device 61 when the garbage G is transported by suction to the garbage storage tank 24 will be described with reference to the flowcharts of FIGS.

First, in step S61 of the flowchart of FIG. 11, the maximum value of the vessel number Bm to be subtracted and updated every time suction of the vessel B is completed is displayed on the monitor 62 in the same manner as the counter CNT.
Turn ON the suction start operation switch 63 of the operation panel 60,
The blower 33 of the suction device 23 is operated. Next, in step S63, the number of executions i of the preliminary suction step is cleared to 0, and then the discharge gate 14 is opened in step S64. Thereafter, in step S65, the input gate 8
, And time measurement from the time of closing operation of the closing gate 8 by the timer is started. Then, in step S66, the pressure in the vessel B is reduced in accordance with the negative pressure in the refuse storage tank 24 by the blower 33 of the suction device 23, and in step S67, the negative pressure value in the vessel B is reduced to a predetermined maximum negative pressure value. Whether or not there is a vessel internal pressure sensor 71
If the negative pressure value in the vessel B is the predetermined maximum negative pressure value, ie, YES, the process proceeds to step S68. In this case, the step S62 to the step S67 constitute a negative pressure step of reducing the pressure in the vessel B to a negative pressure.

In step S68, the compression flag FLG is checked. If the compression flag FLG = 1, the backwashing operation is performed in step S31 of FIG. 5 as described above, and then the waste compression operation is performed in step S32. I do.

On the other hand, if the determination in step S68 is NO, that is, if the compression flag FLG is "0", the flow advances to step S69 to open the inlet gate 18 of the vessel B, and the secondary air inlet 16 By introducing more secondary air into the vessel B, the garbage G in the vessel B is sucked and transported into the garbage storage tank 22 via the garbage transport pipe 13 and the suction pipe 22 while tumbling. Do.

Thereafter, in step S70, it is determined whether or not re-suction is necessary according to the size of the vessel B. If YES is determined that re-suction is necessary, the process returns to step S66 to change the suction pattern. On the other hand, if unnecessary, the process proceeds to step S71. In this step S71,
Based on the size of the vessel B, the amount of waste stored therein is written as the virtual waste amount Q as it is, and the process proceeds to step S81 in FIG.

In this step S81, the cumulative capacity ΔQ of the virtual waste quantity Q when the suction transport of the waste G is performed over a plurality of vessels B is compared with the full capacity that can be stored in the waste storage tank 24. . Then, in step S81, when the accumulated capacity ΣQ exceeds the full capacity of the refuse storage tank 24, the process proceeds to step S90, where “full” is displayed on the monitor 62 of the operation panel 60, and the control is terminated.

On the other hand, if the determination in step S81 is NO, in which the cumulative capacity ΣQ of the virtual waste amount Q is smaller than the full capacity of the waste storage tank 24, step S81 is performed.
At 82, the virtual waste amount Q is subtracted from the margin value M. Then, in step S83, the sign of the subtraction value (M−Q) is determined in step S18. If the virtual waste amount Q is smaller than the margin value M and the subtraction value (M−Q) is positive, the determination is NO. It is determined that the waste G can be continuously suctioned and transported without performing the waste compression operation, and the process proceeds to step S85.
On the other hand, the virtual waste amount Q exceeds the margin value M and the subtraction value (M−
In the case of YES where Q) is negative, it is determined that continuing the suction transport of the refuse G will cause a blockage near the introduction port 40 of the refuse storage tank 24, and the process proceeds to step S84.
Then, in this step S84, the above step S
The compression flag FLG 68 is set to “1”.

Thereafter, in step S85, the counter CNT is checked to determine whether or not all the refuse G in all the vessels B of the refuse storage area X has been sucked and transported.
If the determination is YES, that is, if the counter CNT is 1 (step S91), "End of vessel suction" is displayed on the monitor 62 of the operation panel 60, and the stop operation switch 65 of the operation panel 60 is turned off to perform suction. Blower 33 of device 23
To stop. On the other hand, if the determination in step S85 is NO that the counter CNT is not 1, the process proceeds to step S86.
Decrements the Bessel number Bm by 1, and proceeds to step S83.

In this step S83, it is determined whether or not the vessel number Bm is "0" or less, and the vessel number Bm is determined.
Is less than or equal to "0", the process proceeds to step S88.
Then, after returning the vessel number Bm to the maximum vessel number of the waste storage base X, the process proceeds to step S89. In step S89, similarly to the case where the determination in step S87 is NO where the Bessel number Bm is larger than "0", the counter CNT is decremented by one and the process returns to step S63. In this case, the above steps S68 to S
By 89, a suction step of sucking and transporting the refuse G in the vessel B is configured.

On the other hand, if the determination in step S67 is NO, ie, the negative pressure value in the vessel B is less than the predetermined maximum negative pressure value, the process proceeds to step S101, and the process proceeds to step S101.
If the elapsed time after the closing operation of the closing gate 8 in 65 is not NO, the process waits until the time is over, and when the time is over, proceeds to step S102. In this step S102, it is determined whether or not the number of executions i of the preliminary suction step is the limit number of times “5”, and N in which the number of executions i of the preliminary suction step is less than the limit number of executions “5”.
In the case of O, in step S103, the number of executions i of the preliminary suction step is incremented by one, and then step S104
Then, the introduction gate 18 of the vessel B is opened, secondary air is introduced into the vessel B from the secondary air introduction port 16 to perform preliminary suction, and time measurement from the opening operation of the introduction gate 8 is started. I do.

Thereafter, in step S105, the opening gate 8 of the vessel B is opened, and the above-described step S1 is performed.
The debris G in the dust chute 6 is introduced into the reduced space in the vessel B formed by the preliminary suction by the opening operation of the introduction gate 18 in 04.

Thereafter, in step S106, it is determined whether or not the time measurement in step S104 has expired. After waiting for the time measurement to expire, the introduction gate 18 of the vessel B is closed in step S107. The operation returns to step S66. Then, steps S66 and S67, and step S1
The pre-suction process from 01 to S108 is repeatedly performed until the number i of executions of the pre-suction process reaches the limit number “5” in the determination in step S102, whereby the closing operation of the input gate 8 has been engaged. When the accumulated dust G in the dust chute 6 is removed by being introduced into the vessel B, the closed state of the charging gate 8 is confirmed by the maximum negative pressure value signal of the vessel internal pressure sensor 71 in steps S67 and S101. Subsequent to the negative pressure step of S62 to S67, steps S68 to S8 are performed.
The process shifts to the suction step 9 and the dust G in the vessel B can be smoothly suctioned and transported.

In this embodiment, for example, when the determination in step S102 is "4", the number of executions is incremented by one in step S103 to perform the fifth last preliminary suction step. If it is determined in step S67 that the negative pressure value in the vessel B is the predetermined maximum negative pressure value, in step S71, the amount of dust Bq stored inside the vessel The sum of the corrected waste amount q that will be transported by suction in the suction process and the integrated value obtained by integrating the number of executions “5” is written as the virtual waste amount Q. As a result, the waste volume far exceeding the waste amount Bq of the vessel B is sucked and transported into the waste storage tank 24 by the execution of the preliminary suction process, and the waste volume is calculated in consideration of the number of executions of the preliminary suction process “5”. , The calculation error of the suction transport amount of the refuse G and the remaining capacity in the refuse storage tank 24 is reduced, the refuse compression operation by the compression plate 51 can be inserted at an appropriate timing, and the refuse in the refuse storage tank 24 can be inserted. Blockage due to G can also be reliably prevented.

On the other hand, it is determined in step S102 that the number i of executions of the preliminary suction step is the limit number “5”.
In the case of, the process proceeds to step S109, "input gate abnormality" is displayed on the monitor 62 of the operation panel 60, and the control of the pre-suction process is ended. The pre-suction process is performed more wastefully, and time is wasted. This can be similarly prevented.

The present invention is not limited to the above embodiments, but includes various other modifications. For example, in each of the above embodiments, the limit number of execution times i of the preliminary suction step is set to “5”. However, in the preliminary suction step, the opening / closing operation of the introduction gate is repeatedly performed, or the opening state of the introduction gate is extended for a longer time. By keeping most of the waste in the vessel by sucking and transporting it over the entire space, and emptying the vessel almost completely, the input gate is opened to introduce a large amount of deposited dust in the dust chute into the vessel. The limit number of suction steps may be changed to less than “5”. On the other hand, the opening state of the introduction gate in the preliminary suction step is shortened to a short time, and only a small amount of dust in the vessel is sucked and transported, and the input gate is opened in a state where the vessel is hardly reduced. May be introduced into the vessel little by little, so that the limit number of times of the preliminary suction step may be changed to “6” or more.

Further, in each of the above-described embodiments, the vessel gate B is detected by the vessel internal pressure sensor 71 after the completion of measurement of the unblocked state of the closing gate 8 when the NO signal of the limit switch 10 is not detected or the time from the closing operation of the closing gate 8 is completed. Although the detection is performed when the negative pressure value in the inside is less than the predetermined maximum negative pressure value, the unblocked state of the closing gate may be detected by both the limit switch and the vessel internal pressure sensor.

In each of the above embodiments, the virtual waste amount Q sucked into the waste storage tank 24 is calculated by dividing the virtual waste amount Q of the vessel B by the corrected waste amount that will be suctioned and transported in one preliminary suction step. The dust compression operation by the compression plate 51 is inserted based on the sum (calculated value) of the accumulated value obtained by integrating the number of executions “5” into q, but the dust compression by the compression plate is performed based on the remaining capacity of the waste storage tank. An operation may be inserted.

Further, in each of the above-described embodiments, when the introduction gate 8 of the introduction gate 18 and the introduction gate 8 which have been opened in the preliminary suction step is shifted to the negative pressure step again, the introduction gate 18 is first set to the negative pressure state. The closing operation was performed after the closing operation.However, when shifting from the preliminary suction step to the negative pressure step again, the secondary air from the introduction gate is finally introduced into the vessel so that the closing gate is first operated. The introduction gate may be closed after a delay from the completion of the closing operation. In this case, there is a concern that dust in the vessel may be hollowed out by the flow of the outside air introduced into the vessel through the charging gate in the preliminary suction step, but the introduction gate closes the closing operation of the charging gate. When the closing operation is performed later, the outside air from the introduction gate is finally introduced into the vessel when the process shifts to the negative pressure step, so that even if the dust in the vessel is hollow, the dust is hollowed out. The garbage is broken by the wind direction change due to the flow of secondary air from the introduction gate after blocking the flow of outside air from the input gate, and the garbage storage efficiency in the vessel is not hindered by hollowing out-effectively improves.

Further, in each of the above embodiments, only the introduction gate 18 is opened in the suction step. However, the introduction gate is also opened together with the introduction gate, and the secondary air is introduced into the vessel via the introduction gate from behind the refuse. You may make it do. In this case, the injection gate functions as a rear secondary air introduction gate behind (upstream side) the introduction gate.

[0085]

As described above, according to the refuse suction control method according to the first and second aspects of the present invention, the closing state detecting means is not operated during the closing operation of the charging gate or the refuse storage container is not operated within a predetermined time. By reducing the pressure to a predetermined pressure, the introduction gate is opened to preliminarily suction and reduce the amount of dust in the garbage storage container, and then the input gate is opened to operate the dust reduction space in the garbage storage container due to the preliminary suction. By repeatedly performing the preliminary suction to introduce the debris in the chute, the debris in the dust chute that was caught in the input gate can be removed and the input gate can be closed, and the debris in the debris storage container can be smoothly removed. Can be transported by suction.

According to the refuse suction control method according to the third aspect of the present invention, after the preliminary suction, the introduction gate is closed after the closing operation of the input gate is completed, so that the outside air from the introduction gate is finally stored in the refuse storage container. Since the waste is introduced, the garbage that is hollowed out by the flow of outside air from the input gate in the garbage storage container can be easily broken by the wind direction change due to the flow of outside air from the introduction gate, effectively improving the garbage storage efficiency in the garbage storage container. Can be improved.

According to the refuse suction control method according to the fourth aspect of the present invention, the negative pressure in the refuse storage container is stopped after the preliminary suction has been performed a predetermined number of times or more. It is possible to prevent waste of time for performing preliminary suction.

Further, according to the refuse suction control method of the present invention, the amount of refuse sucked into the refuse storage tank is calculated based on the size of the refuse storage container and the number of times of the preliminary suction, and the refuse is calculated. Since the compression operation of the refuse is performed by the compression means according to the calculated value of the amount or the remaining capacity of the garbage storage tank, the amount of garbage suctioned and transported by the preliminary suction far exceeding the garbage storage amount of the garbage storage container The calculation error of the remaining capacity can be reduced, and the compression operation by the compression means can be inserted at an appropriate timing to reliably prevent the clogging by the dust in the dust storage tank.

[Brief description of the drawings]

FIG. 1 is a side view showing an overall configuration of a refuse suction transport device to which a refuse suction control method according to a first embodiment of the present invention is applied.

FIG. 2 is a side view of the refuse suction truck.

FIG. 3 is a flowchart showing control of a negative pressure step and a preliminary suction step by a control device.

FIG. 4 is a flowchart illustrating control of a suction process by a control device.

FIG. 5 is a flowchart showing control of a series calculation and a margin value of the dust compression operation by the control device.

FIG. 6 is a flowchart illustrating control of a dust compression operation by the control device.

FIG. 7 is a block diagram illustrating a configuration of a suction device.

FIG. 8 is a cross-sectional view of the cover taken near each suction port.

FIG. 9 is a front view of the operation panel.

FIG. 10 is a diagram corresponding to FIG. 2 according to a second embodiment of the present invention.

FIG. 11 is a flowchart illustrating control of a negative pressure step, a preliminary suction step, and a first half of a suction step by the control device.

FIG. 12 is a flowchart illustrating control in the latter half of the suction step by the control device.

[Explanation of symbols]

 Reference Signs List 6 dust chute 8 input gate 10 limit switch (blocking state detecting means) 13 refuse transport pipe (transport pipe) 14 discharge gate 18 introduction gate 24 refuse storage tank 51 compression plate (compression means) B vessel (refuse storage container) G refuse Q Virtual waste volume (garbage volume) i Number of times the preliminary suction process was performed

Claims (5)

[Claims] When sucking garbage stored in a refuse storage container from a dust chute via a charging gate to a garbage storage container via a discharge gate, the charging gate is closed and the discharge gate is opened. After the inside of the garbage storage container is depressurized to a predetermined pressure in the state, the introduction gate of the garbage storage container is opened to introduce outside air into the garbage storage container, and the garbage in the garbage storage container is discharged to the discharge gate. A dust suction control method for sucking the dust out of the dust storage container via the above, wherein when the closing state detecting means for detecting the closing state of the charging gate does not operate during the closing operation of the charging gate, the inlet gate is opened. Preliminary suction of the refuse in the refuse storage container through the discharge gate to the outside of the refuse storage container to reduce the volume, and thereafter, opening of the input gate and operation of the dust chute. After the dust is introduced into the reduction space waste storage container, dust suction control method for causing the negative pressure to the dust storage container again. 2. When sucking garbage stored in a refuse storage container from a dust chute via a charging gate through a discharge gate to the outside of the refuse storage container, the charging gate is closed and the discharge gate is opened. After the inside of the garbage storage container is depressurized to a predetermined pressure in the state, the introduction gate of the garbage storage container is opened to introduce outside air into the garbage storage container, and the garbage in the garbage storage container is discharged to the discharge gate. A dust suction control method for sucking the dust out of the dust storage container through the dust collection container, wherein the inside of the dust storage container is not reduced to a predetermined pressure within a predetermined elapsed time after the closing operation of the charging gate during the closing operation of the charging gate. In this case, the introduction gate is opened, and the waste in the waste storage container is preliminarily sucked out of the waste storage container through the discharge gate to reduce the amount. Thereafter, the input gate is opened. After by introducing dirt inside the dust chute reduction space waste storage container, dust suction control method for causing the negative pressure to the dust storage container again. 3. The refuse according to claim 1, wherein when the pressure inside the refuse storage container is reduced again after the preliminary suction, the introduction gate is closed after the closing operation of the input gate is completed. Suction control method. 4. The refuse suction according to claim 1, wherein the negative pressure in the refuse storage container is stopped when the preliminary suction is performed a predetermined number of times or more. Control method. 5. The waste in the waste storage container is sucked into a waste storage tank via a transport pipe connected to a discharge gate, and the amount of the sucked waste is determined by the size of the waste storage container and the number of times of preliminary suction. Then, according to the calculated value of the amount of the refuse or the remaining capacity of the refuse storage tank, compression of the refuse is performed by the compression means provided in the refuse storage tank so that the refuse storage tank does not block the refuse. The dust suction control method according to any one of claims 1 to 4, wherein the operation is performed.