JP2000226186A - Interlocking method for crane for garbage dumping and garbage truck - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent interference between a crane for garbage dumping and a garbage truck interlocking both of them, and prevent a large amounts of garbage from accumulating near a carrying-in gate. SOLUTION: An approach detection sensor 7 detects the approaching of a garbage truck 6 into a carry-in gate 15. The interlocking of a crane for garbage dumping 4 and the garbage truck 6 is released by the detection signal output from the approach detection sensor 7 so that the garbage loading work in a garbage pit 1 near the carry-in gate 15 may not be performed. Thereby, the work of the crane for garbage dumping 4 can be controlled.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an interlocking method between a refuse input crane and a refuse collection vehicle,
The present invention relates to an interlocking method between a garbage input crane and a garbage collection vehicle, in which an interlock between the garbage input crane and the garbage collection vehicle is interlocked at a waste incineration plant to prevent interference between the two. .

[0002] Conventionally, refuse discharged from general households and the like is collected by a refuse collection vehicle, carried into a refuse incineration plant, and incinerated. By the way, in the conventional garbage disposal site, the garbage collected by the garbage truck is once thrown into the garbage pit, and the required agitation is performed in this garbage pit using a garbage dumping crane controlled by the operation management system. After mixing and transshipping, the refuse is homogenized and then put into an incineration hopper.

[0003] In this stirring and mixing and reloading performed by using the garbage charging crane, for example, garbage charged from a garbage truck and deposited near the loading gate is grasped by a grab bucket of the garbage loading crane, and is opposite to the loading gate. On the side wall side, the grab bucket of the garbage input crane was opened at a position slightly higher than the height of the garbage in the garbage pit, and the garbage was dropped and the garbage was piled up. .

[0004]

By the way, the garbage inlet of the carry-in gate is designed to prevent odors and garbage from scattering.
A throw-in door is provided, and when throwing garbage from the garbage truck, the throw-in door is opened and waste is thrown into the waste pit. The input door adopts a double door opening structure, a structure opening upward, a structure opening sideways, or the like.

[0005] For this reason, when the garbage is loaded from the garbage collection vehicle and the garbage deposited near the carry-in gate is to be grabbed by the grab bucket of the garbage charging crane, the grab bucket or the grab bucket of the garbage charging crane is used. There is a problem that the wire rope hanging the garbage and the garbage collection vehicle, the double door opening structure, and the input door with the upward opening structure interfere (collide), and the garbage input crane and the garbage collection vehicle are damaged. .

[0006] In addition, when garbage is deposited from the garbage truck while the garbage deposited near the carry-in gate is being grasped by the grab bucket of the garbage charging crane, the garbage is thrown into the grab bucket or a wire rope hanging the grab bucket. There is a problem that a part of the refuse is covered and the grab bucket and the wire rope are damaged.

In order to prevent this, when the loading door is open, the opening / closing signal of the loading door is transmitted to the crane by the grab bucket of the loading crane so as not to perform the work of grasping the dust accumulated near the loading gate. A system has been put to practical use in which the data is input to a control device and an interlock is established between the refuse input crane and the input door. However, in the case of this method, at the peak of the garbage collection by the garbage truck, the garbage collection by the garbage collection vehicle continues intermittently without the closing door being closed, and the garbage accumulated near the entrance gate. Therefore, there is a problem that a large amount of refuse is deposited near the carry-in gate, and the refuse cannot be reloaded.

The present invention has been made in view of the above-mentioned problems of the conventional interlocking method for a refuse input crane, and has taken an interlock between a refuse input crane and a refuse collection vehicle.
It is an object of the present invention to provide an interlocking method between a refuse input crane and a refuse collection vehicle, which prevents interference between the two and prevents a large amount of refuse from being deposited near a carry-in gate.

[0009]

In order to achieve the above object, the present invention provides an interlocking method between a refuse input crane and a refuse collection vehicle, which detects that the garbage collection vehicle has entered a carry-in gate. It is characterized by detecting by a sensor and controlling a garbage charging crane based on a detection signal from the entry detection sensor so as not to perform a work of grasping garbage in a garbage pit near the carry-in gate.

The interlocking method between the garbage charging crane and the garbage collection vehicle detects that the garbage collection vehicle has entered the entrance gate by an entrance detection sensor, and the garbage collection vehicle is carried in by a detection signal from the entrance detection sensor. The garbage loading crane is controlled so that the garbage in the garbage pit near the gate is not grasped, so during the peak loading of garbage by the garbage truck, the loading door is not closed, Even if the garbage collection by the garbage truck continues intermittently, transit the garbage so that the amount of garbage deposited near the import gate is maintained at a constant level between the garbage collection trucks. It can be performed efficiently.

In this case, while the refuse is being thrown by the garbage truck, the trash crane is lowered above the trash inlet and the grab bucket of the trash crane is lowered to a height that does not interfere with the garbage truck. Garbage collection vehicle gate opening detection sensor detects that the gate of the garbage collection vehicle is closed, cancels the standby state by the detection signal from the gate opening detection sensor, and closes the entrance gate. Just like resuming garbage,
It can control the crane for garbage input.

Thus, the work of grasping the refuse in the vicinity of the carry-in gate can be promptly resumed, and the refuse can be re-transferred more efficiently so that the amount of refuse in the vicinity of the carry-in gate is maintained at a constant level. Can be.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the method for breaking a garbage bag according to the present invention will be described below with reference to the drawings. In FIG.
The outline of a garbage disposal plant that incinerates garbage collected from general households and businesses is shown. Garbage trucks 6 from households and businesses
The garbage collected at is not only various kinds of garbage, but also varieties of
Those stored in a paper garbage bag are in a mixed state. The collected waste is once put into the waste pit 1 before being incinerated and is temporarily stored.

As shown in FIG. 1, the garbage pit 1 is provided with a carry-in gate 15 for the garbage truck 6 to enter.
The garbage truck 6, which is disposed so as to open to the upper side surface of the garbage and has entered the home position of the carry-in gate 15 by retreating, inclines the carrier 61 and opens the gate 62, whereby the carrier 6 is opened.
The garbage in the garbage pit 1 naturally falls into the garbage pit 1 and is thrown in.

In addition, a garbage dumping crane 4 is controlled by an operation management system provided in a control room 5 and the like at a position above the garbage pit 1 to travel, traverse, hoist, grab a grab bucket 41, and the like. It is arranged to perform. The grab bucket 41 that holds the garbage can be moved up and down by winding and lowering a wire rope.
The hopper 3 that is connected to the incinerator adjacent to the incinerator is configured to input refuse in response to a request signal for inputting refuse to the incinerator. The refuse input to the hopper 3 is supplied to the incinerator by a conveyer or a refuse supply mechanism (not shown) using hydraulic pressure.

As shown in FIGS. 2 to 3, at the fixed position where the garbage pit 1, more specifically, the garbage collection vehicle 6 that enters upon retreating, stops, as shown in FIGS.
7, a fixed position detection sensor 10 for detecting that the garbage truck has stopped at a fixed position, and a pallet inclination detection for detecting when the pallet 61 of the garbage truck 6 stopped at the fixed position is inclined at a predetermined garbage discharge inclination angle. Sensors 8 and 8, gate opening detection sensors 9 and 9 for detecting the opened gate 62, and falling into the garbage pit 1 when the garbage 61 is inclined and the garbage is thrown into the garbage pit 1 from the opened gate 62. The falling waste detection sensor 11 for detecting waste is attached to the loading gate 15 or the waste pit 1 at a corresponding appropriate position. In this case, a photoelectric sensor is used for each of the sensors 7, 8, 9, 10, 11 in this embodiment, but the type of the sensor is not limited to this. In order to reliably detect the garbage truck 6 having an irregular shape, the sensors 7, 8,
Of the sensors 9, 10, and 11, the sensors 7, 8, and 9 have two sensors arranged side by side as shown in FIGS. The number of sensors is not limited to this.

A nozzle 12 for injecting high-pressure water from the refuse input port 1A of the refuse pit 1 toward refuse falling below the refuse detection sensor 11 is provided. A plurality of nozzles 12 are provided at predetermined intervals, for example, 200 to 300 m, in a horizontal direction so that high-pressure water, which is sprayed equally to all of the garbage input from the garbage truck 6, directly hits the garbage.
They are arranged in one or two rows at intervals of m. A high-pressure water having a pressure capable of breaking a garbage bag made of vinyl or paper by connecting a pressure device 13 to the nozzle 12 is not particularly limited. For example, 2500 kgf / cm ²
Is supplied so that high-pressure water can be jetted from the nozzle 12.

Next, a description will be given of a method of breaking the collected waste using this facility. 2 to 3 show a garbage truck 6 that has collected garbage from households, businesses, etc.
5 shows a situation in which waste is thrown into the waste pit 1 from the waste inlet 1A. As shown in FIG. 2, the garbage truck 6 retreats and enters the front of the garbage inlet 1 </ b> A at a fixed position of the carry-in gate 15. At this time, the garbage collection vehicle 6 detects the approach of the garbage collection vehicle 6 by blocking the light of the entry detection sensors 7, 7, and then detects that the garbage collection vehicle 6 has reached the predetermined home position by the home position detection sensor 10. Detect. The driver of the garbage truck 6 is notified of this by an indicator light 14 disposed at an appropriate position in the carry-in gate 15 so that the driver of the garbage truck 6 can easily and surely confirm it. Thereafter, as shown in FIG. 3, when the gate 62 of the garbage truck is opened and the bed 61 is inclined, the inclination of the bed 61 and the opening of the gate 62 are respectively detected by the bed inclination detecting sensors 8 and 8 and the gate opening detecting sensor 9. , 9.

The bed 61 of the garbage truck 6 stopped at a fixed position
When the dust in the cargo bed 61 is thrown into the garbage pit 1 due to the inclination of the gate 62 and the opening of the gate 62, the garbage falling into the garbage pit 1 is detected by the falling garbage detection sensor 11, and the pressurization is performed by the detection signal. The high-pressure water pressurized by driving the device 13 is discharged along the waste inlet 1A of the waste pit 1 for 20 minutes.
From a plurality of nozzles 12 provided at intervals of 0 to 300 mm,
Spray toward falling garbage. The high-pressure water injected from the nozzle 12 has a water pressure of, for example, 2500 kgf / cm ^2.
As a result, the water jet reaches a speed equivalent to two to three times the speed of sound, and has kinetic energy enough to cut concrete. In addition, it can be easily broken in the vertical direction in a short time. Thereby, the refuse inside and outside the refuse bag can be easily mixed, and the refuse input crane 4 can easily perform the stirring and mixing of the refuse, so that the refuse can be homogenized and the moisture contained in the refuse can be uniformed. It will be.

In this case, by reducing the hole diameter of the nozzle 12 to, for example, about 1 mm or less,
Garbage thrown into the garbage pit 1 from the garbage truck 6
Detected by the falling dust detection sensor 11, and based on this detection signal, combined with the fact that high-pressure water is injected,
It is possible to reduce the amount of high-pressure water used to break the garbage bag, prevent the water contained in the garbage from rising, and prevent the garbage in the next process from being adversely affected. .

If the dust detection signal from the falling dust detection sensor 11 is interrupted for a predetermined time, for example, two to three seconds, it is determined that the dust on the bed 61 has settled, and the pressurizing device 13 is stopped. The jetting of high-pressure water from the nozzle 12 is stopped.

The presence / absence of a dust detection signal from the falling dust detection sensor 11 can be indicated on the display lamp 14 by, for example, a different color for each situation. Thereby, garbage truck 6
Of the garbage truck 6 can quickly grasp the state of the garbage being thrown in without merely looking into the garbage pit 1 and by simply displaying the indicator light 14. The garbage truck 6 can be closed so as to exit the entrance gate 15.

Next, the interlock between the waste input crane 4 in the waste pit 1 and the waste collection vehicle 6 will be described. The interlock between the garbage charging crane 4 and the garbage collection vehicle 6 in the garbage pit 1 indicates that the garbage collection vehicle 6 has retreated and entered the entrance gate 15, and the entry detection sensors 7, 7 are shielded from light. In accordance with the detection signals of the approach detection sensors 7 and 7, the work of grasping the garbage other than the vicinity of the carry-in gate 15 or the work of putting the waste into the hopper 3 is assigned to the next crane work schedule.

Since the time required from the garbage loading operation by the trash loading crane 4 to the hoisting is usually 2 to 3 minutes, the opening and closing of a loading door (not shown) provided at the garbage loading port 1A of the loading gate 15 is performed. Regardless, the entry detection sensor 7,
Since the entry of the refuse collection vehicle 6 can be accurately detected at an early timing by the use of 7, the work near the carry-in gate 15 can be removed from the next crane work. Further, even when the garbage charging crane 4 has already started work near the loading gate 15, the work can be interrupted before the lowering operation of the grab bucket 41.

The time from when the garbage collection vehicle 6 enters the entrance gate 15 until the garbage is thrown into the garbage pit 1 and when the garbage collection vehicle 6 leaves the entrance gate 15 is almost constant within a few minutes. At the time when the garbage truck 6 arrives, if the garbage input crane 4 is not performing garbage picking work or is in a situation where it is completed immediately, the garbage in the vicinity of the loading gate 15 is scheduled for the next crane work schedule. A grabbing operation can be assigned. In this case, when the refuse input crane 4 arrives above the refuse input port 1A during the input of refuse by the refuse collection vehicle 6, the grab bucket 41 is lowered to a height that does not interfere with the refuse collection vehicle 6 or the like, and waits. The gate opening detection sensors 9 and 9 detect that the gate 62 of the garbage truck 6 is closed, and the grab bucket 41 of the garbage dumping crane 4 and the garbage inlet of the garbage truck 6 and the entrance gate 15. When the input door or the like provided in 1A does not interfere, the standby state is released, and the work of grasping the garbage near the carry-in gate 15 is restarted. In the normal operation of the garbage charging crane 4, if the amount of grabbing by the grab bucket 41 is small, re-gripping is performed. In order to shorten the time occupied by the charging crane 4, regripping is not performed. In this manner, the operation rate of the crane is increased, and even when the garbage collection vehicle 6 intermittently inputs the garbage by the garbage collection vehicle 6 at the peak time of the garbage introduction without closing the input door. In addition, refuse can be transshipped so that the amount of refuse deposited near the entrance gate 15 is maintained at a constant level.

The drive control of the pressurizing device 13 for injecting high-pressure water, the control of the indicator lamp 14, and the generation of signals for interlocking with the refuse input crane 4 are comprehensively controlled by the operation management system. In addition, independent control devices can be controlled in association with each other.

[0027]

According to the method for interlocking the refuse input crane and the refuse collection vehicle of the present invention, the entry detection sensor detects that the garbage collection vehicle has entered the entrance gate. The garbage loading crane is controlled so that the garbage in the garbage pit near the loading gate is not detected by the detection signal from the garbage collection gate. Even if garbage input by the garbage truck continues intermittently without closing the garbage, the amount of garbage deposited near the entrance gate is maintained at a constant level between the garbage collection vehicles. Garbage can be transferred efficiently, and the garbage can be homogenized, thereby increasing the garbage combustion efficiency and enabling continuous and uniform incineration of the garbage , It is possible to suppress the generation of harmful substances such as dioxin from the incineration of waste.

In addition, while the garbage is being thrown in by the garbage truck,
Lower the garbage input crane above the garbage input port, and lower the grab bucket of the garbage input crane to a height that does not interfere with the garbage truck. When the gate of the car is closed, the standby state is released based on the detection signal from the gate opening detection sensor, and the garbage for loading garbage is controlled so that the garbage in the vicinity of the carry-in gate is resumed. Thereby, the work of grasping the refuse in the vicinity of the carry-in gate can be quickly restarted, and the refuse can be transshipped more efficiently so that the amount of refuse accumulated near the carry-in gate is maintained at a constant level.

[Brief description of the drawings]

FIG. 1 is an explanatory view schematically showing a refuse incineration plant that implements a method for breaking a collected garbage bag according to the present invention.

FIG. 2 is an explanatory view showing a state where the garbage truck has entered a carry-in gate.

FIG. 3 is an explanatory diagram showing a state where the garbage truck has entered a carry-in gate and is putting garbage into a garbage pit.

[Explanation of symbols]

 Reference Signs List 1 garbage pit 1A garbage inlet 2 garbage thrown into garbage pit 3 hopper 4 garbage for loading garbage 41 grab bucket 5 control room 6 garbage truck 61 loading platform 62 gate 7 entry detection sensor 8 inclination detection sensor 9 gate opening detection sensor DESCRIPTION OF SYMBOLS 10 Fixed position detection sensor 11 Dust detection sensor 12 Nozzle 13 Pressurizing device 14 Indicator light 15 Loading gate

Claims (2)

[Claims] An entrance detection sensor detects that a garbage collection vehicle has entered a carry-in gate, and the detection signal from the entrance detection sensor does not perform the work of grasping garbage in a garbage pit near the carry-in gate. A method for interlocking a refuse input crane and a refuse collection vehicle, wherein the refuse input crane is controlled as described above. 2. While the garbage is being thrown by the garbage truck, lower the garbage for loading cranes above the garbage inlet and lower the grab bucket of the garbage for dumping to a height that does not interfere with the garbage truck. The gate opening detection sensor of the garbage truck detects that the gate of the garbage truck has been closed, and the detection signal from the gate opening detection sensor cancels the standby state, and the garbage in the vicinity of the carry-in gate is removed. 2. The interlocking method between a refuse input crane and a refuse collection vehicle according to claim 1, wherein the refuse input crane is controlled so that the grasping operation is restarted.