JPH0512242B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a discharge operation control device for a garbage collection vehicle.

(Prior Art) Generally, a garbage collection vehicle is known in which a garbage loading box, which is equipped with a garbage loading device therein, is tiltably connected to a rear opening of the garbage storage box.

In such a garbage collection vehicle, the above-mentioned garbage loading device can be operated by a start switch provided on the garbage input box only when the garbage input box is connected to the garbage storage box.

Furthermore, as shown in Japanese Patent Laid-Open No. 54-140314, there is also known a device in which the loading panel automatically reverses itself when the garbage disposal box is tilted.

(Problem to be Solved by the Invention) In the above-mentioned garbage collection vehicle, when the garbage loading box is tilted during garbage discharge, the garbage loading device tries to scrape out the garbage remaining in the storage chamber of the garbage loading box. Even if the start switch was operated, the power supply was cut off due to the changeover switch being switched to the discharge operation side, and the garbage loading device could not operate during garbage discharge.

As a result, in order to scrape out the garbage remaining in the garbage disposal box, the garbage disposal box must be returned to the connected state, and then the garbage loading device must be activated to collect the garbage into the garbage storage box, and the discharge operation must be carried out again. It was necessary and the work was complicated.

Furthermore, in the latter type of garbage collection vehicle, it was impossible to discharge the residual garbage because reversing the loading panel did not have any effect on the garbage remaining in the storage chamber of the garbage input box.

Furthermore, when the garbage collection truck is cleaned after the garbage discharge work is completed, since the garbage loading box is equipped with a garbage loading device, this garbage loading device prevents the garbage from being thoroughly cleaned. I couldn't wash it.

The present invention has been made in view of the above points, and is a garbage collection vehicle that can operate a garbage loading device even when discharging garbage, and can stop the operating garbage loading device at any position. The present invention provides a discharge operation control device.

(Means for Solving the Problems) The present invention includes a garbage storage box mounted on a vehicle frame,
In a garbage collection vehicle comprising a garbage loading box that is tiltably connected to a rear opening of the garbage storage box and is equipped with a garbage loading device that operates in one cycle or in a continuous cycle and loads garbage into the garbage storage box. , a plurality of hydraulic actuators for operating the garbage loading device and a control device for operating the plurality of hydraulic actuators are provided, and the control device includes a changeover switch for selecting a garbage loading operation or a garbage discharge operation, and the changeover switch. A scraping switch that operates the garbage loading device, a stop switch that stops the operation of the garbage loading device by the scraping switch, and a fixed tilt angle of the garbage input box with respect to the garbage storage box are detected. When the garbage disposal box is operating in a tilted state, the operation of the scraping switch operates the garbage loading device for one cycle, and the operation of the stop switch operates the garbage loading device during operation. The invention is characterized in that it is provided with a control means for stopping the loading device.

Further, the scraping switch and the stop switch are arranged in the driver's cab of the garbage collection vehicle.

(Function) When discharging garbage, after switching the changeover switch to the discharge side, operating the tilting switch to the tilting side releases the lashing device and tilts the garbage input box. After the garbage disposal box has been tilted at a certain angle, a scraping switch can be operated to discharge some of the debris remaining in the storage chamber of the garbage disposal box. Operate the device for one cycle to scrape out any remaining debris in the storage chamber.

When the garbage collection vehicle is washed after the garbage discharge work is completed, the garbage loading device is activated by tilting the garbage input box and operating the scraping switch. When the garbage loading device is operating, operating the stop switch will immediately stop the garbage loading device.

(Embodiment) Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In FIG. An open garbage input box 2 is connected to its upper end by a pivot 4, and the garbage input box 2 can be tilted relative to the garbage storage box 1 via a tilting cylinder (not shown).

The garbage input box 2 has an input port 5 on the lower back side thereof.
is opened, and a garbage storage chamber 6 is formed in the lower part thereof.

The garbage loading box 2 is equipped with a garbage loading device A that compresses and crushes the garbage and loads it into the garbage storage box 1.

The structure of this garbage loading device A will be explained below. Guide groove members 7 formed of groove-shaped steel are formed on both side walls of the garbage input box 2 with reinforcing frames stacked on top of each other and are inclined from the front upper end to the rear lower part. The pivot shaft 4 is supported on the upper end of the shaft.

On the other hand, a sliding plate 8 extending over the entire horizontal axis is housed in the garbage input box 2, and guide rollers 9 are pivotally attached to the upper and lower sides of both side edges of the sliding plate 8. It is fitted slidably along the inner wall of the guide groove member 7.

A pivot 16 is pivotally supported at the upper part of the back surface of the sliding plate 8 via a bracket, and this pivot 16 runs along the back surface of the guide groove member 7 and extends along the sliding distance of the sliding plate 8. It extends beyond the notch 10 formed in the side wall of the garbage input box 2 and protrudes from the inside of the garbage input box 2 to the outside.

A first telescopic cylinder 11 provided on the outside of the garbage input box 2 is installed between the pivot shaft 16 protruding outward beyond the side wall of the garbage input box 2 and the lower part of the garbage input box 2 in the direction of inclination of the guide groove member 7. The sliding plate 8 can be reciprocated along the guide groove member 7 by the telescopic operation of the first telescopic cylinder 11.

Note that the pivot 1 pivotally attached to the upper back surface of the sliding plate 8
6 is also pivotally connected to one end of a second telescopic cylinder 15, which will be described later.

Further, a garbage input box 2 is provided at the lower end of the sliding plate 8.
A pushing plate 12 extending over the entire width is supported by a shaft 13 so as to be swingable back and forth, and the tip of this pushing plate 12 is bent forward.

A projecting piece 14 protruding from the back surface of the pushing plate 12
and a pivot 16 pivotally attached to the upper back surface of the sliding plate 8.
A second telescopic cylinder 15 is connected between the inner sides, and the pushing plate 12 can be swung back and forth around the shaft support 13 by the telescopic operation of the second telescopic cylinder 15.

Furthermore, a discharge plate 17 that can be moved forward and backward by a discharge cylinder (not shown) is disposed within the garbage storage box 1.

Next, the hydraulic circuit will be explained with reference to FIG. 2. P is a hydraulic pump, T is an oil reservoir, and V1
is an electromagnetic control valve for the first telescopic cylinder 11, V2 is an electromagnetic control valve for the second telescopic cylinder 15, the electromagnetic control valve V1 has solenoids SOLc and SOLd, and the electromagnetic control valve V2 has solenoids SOLa and SOLb, respectively. There is.

Further, to explain the electric circuit diagram of the present invention with reference to FIG. 3, SW1 is a changeover switch for selecting the garbage loading operation or garbage discharge operation, SW2 is a start switch that operates the garbage loading device A during garbage loading, and SW3 is a scraping switch that operates the garbage loading device A when discharging garbage, SW4 is a tilting switch that tilts and tilts the garbage input box 2, and SW5 is a discharge plate 1.
SW6 is a selection switch that selects one cycle operation or continuous cycle operation of garbage loading device A, SW7 is a stop switch that stops the operation of garbage loading device A during garbage loading, SW8 is a stop switch that stops the operation of the garbage loading device A when discharging garbage.

Among these various switches, there is a changeover switch SW1 and a scraping switch on the driver's cab side of the garbage collection vehicle.
SW3, tilt switch SW4, ejection switch SW5
On the other hand, on the garbage input box 2 side, in addition to a start switch SW2, a selection switch SW6, and a stop switch SW7, a sliding plate 8 constituting the garbage loading device A is provided, although not shown in detail. , an independent operating switch for the push plate 12 is arranged.

Further, LS1 is an electric contact that detects the upper limit position of the sliding plate 8, LS2 is an electric contact that detects the lower limit position of the sliding plate 8, and LS4 is an electric contact that detects the forward swing limit signal of the pushing plate 12. , LS3 is an electric contact that detects the backward swing limit position of the push plate 12;
LS5 is an electrical contact that detects that the garbage input box 2 is tilted by a certain angle or more with respect to the garbage storage box 1, and these electrical contacts are constituted by limit switches in the embodiment.

Of these electrical contacts (limit switches), LS1 and LS2 are arranged between the garbage disposal box 2 and the sliding plate 8, and the limit switch is located on one side.
On the other hand, actuating bodies for the limit switches are arranged and controlled.

Further, the limit switches LS3 and LS4 are arranged on the back side of the sliding plate 8, and are configured to guide the back and forth swinging of the push plate 12 by a link mechanism to control switching of their contacts.

Further, the LS 5 is disposed in the garbage input box 2 and is switched and operated by a cam fixed to the pivot shaft 4.

CR1, CR2, CR3, CR4, CR5, CR6 are relays with contacts cr1, cr2, cr respectively.
3, cr4, cr5, and cr6. B is a power source such as a battery.

Next, the operation process of the embodiment of the present invention will be explained with reference to FIGS. 1a to d. The solid line a in FIG. In this state, both the first and second telescopic cylinders 11 and 15 are extended, the sliding plate 8 is in the raised position and operates the limit switch LS1, and the push plate 12 is in the forward swing position and operates the limit switch LS4. I'm letting you do it.

In this state, garbage is introduced into the storage chamber 6 of the garbage input box 2 through the input port 5, the changeover switch SW1 is switched to the upper position shown in Fig. 3, and the start switch SW2 is turned on.
When activated, relays CR1 and CR2 are self-held, solenoid SOLb is energized, and solenoid control valve V
2 to the left position.

As a result, only the second telescopic cylinder 15 is retracted from the pushing completion state shown by the solid line a in FIG. 1, and the pushing plate 12 is inverted until its front surface becomes approximately horizontal as shown by the chain line b in FIG.

When the push plate 12 reaches the limit reversal position, the limit switch LS3 is brought into contact, and at the same time, the self-holding of the relay CR3 is released and the self-holding of the relay CR2 is released.

Therefore, at the same time the solenoid control valve V2 is returned to the neutral position, the solenoid SOLd is energized, and the solenoid control valve V2 is returned to the neutral position.
1 to the left position.

Then, the first telescopic cylinder 11 is contracted from the inverted state shown by the chain line b in FIG. 1, and the sliding plate 8
descends along the guide groove member 7, and the pushing plate 12 connected thereto descends in parallel while keeping its front surface substantially horizontal, and the garbage is collected between the pushing plate 12 and the arcuate surface of the bottom of the garbage input box 2. can be crushed.

When the push plate 12 reaches the lowering limit position, the limit switch LS2 is activated, thereby self-holding the relay CR4 and releasing the self-holding of the relay CR3 at the same time.

As a result, current energizes the solenoid SOLa,
At the same time as returning the electromagnetic control valve V1 to the neutral position, the electromagnetic control valve V2 is switched to the right position.

Then, the second telescopic cylinder 15 expands from the state where the crushing of the garbage is completed as shown by the dashed line c in FIG.
As shown in the figure, the front surface rotates clockwise until it becomes approximately vertical, and enters the compression stroke.
is compressed secondarily between the flat surfaces of the bottom.

At this time, the limit switch LS4 is operated by the action of the link mechanism, and the self-holding of the relay CR4 is released at the same time as the relay CR5 is held on its own.

Therefore, after returning the solenoid control valve V2 to the neutral position, the solenoid SOLc is energized, thereby switching the solenoid control valve V1 to the right position.

As a result, the first telescopic cylinder 11 is operated to extend from the compression end state shown in the dashed line d in FIG.
2 rises in parallel while keeping its front side approximately vertical, and the garbage compressed in the previous step is transferred to the garbage storage box 1.
It can be pushed inside.

When the above-mentioned pushing process is completed, the state returns to the state shown by the solid line a in FIG. 1, and one cycle of reversing, crushing, compression, and pushing is completed.

Note that when the selection switch SW6 is in the one-cycle operating position shown in FIG. 3, the b contact CR5 is released by the operation of the relay CR5 during the pushing stroke.
And when the pushing stroke is completed, the limit switch LS
1 is switched, the self-holding of the relay CR1 is released and the operation of the garbage loading device A is stopped.

On the other hand, when the selection switch SW6 is in the lower position of FIG. The garbage collection operation by the garbage loading device A will continue unless it is canceled by .

In this manner, when the garbage storage box 1 becomes full, the garbage discharge operation begins.

That is, after moving the garbage collection vehicle to a garbage disposal site, etc., switch the changeover switch SW1 to the downward position, and then switch the tilting switch SW4 and the discharge switch to the lower position.
By sequentially operating SW5, the garbage input box 2
is tilted to move the discharge plate 17 backward, and the garbage in the garbage storage box 1 can be discharged to the processing site.

By the way, during such garbage discharging work, when the tilt switch SW4 is operated to release the garbage input box, the second telescopic cylinder 15 is first contracted because current is supplied through the relay contact cr2 in accordance with the solenoid SOLb. .

That is, first, the pushing plate 12 is reversed in a direction away from the garbage, thereby removing the reaction force from the garbage, and the pushing plate 12 reaches the reversal limit position, thereby switching the limit switch LS3.

Further, by continuing to operate the tilting switch SW4, a tilting cylinder (not shown) is extended to release the lashing device, and then the garbage input box 2 is tilted at a certain angle with respect to the garbage storage box 1.

When the garbage input box 2 is tilted at a certain angle set with respect to the garbage storage box 1, the limit switch LS5 is activated.
is switched by a dog or the like (not shown).

Here, if part of the garbage remains in the garbage input box 2, the scraping switch SW3 may be operated.
That is, when the garbage disposal box 2 is tilted at a certain angle, the push plate 12 is in an inverted state, and the limit switch LS3 is switched.Assuming that the push plate 12 is in the raised position, the limit switch LS1 is It has been switched.

Therefore, by operating the scraping switch SW3, the relay CR6 is self-retained, and at the same time,
The current is passed through limit switch LS3 to relay CR.
3 and energizes solenoid SOLd.

Then, the contraction operation of the first telescopic cylinder 11, specifically, the lowering of the push plate 12 is started.

Below, as mentioned above, crushing of the garbage loading device A,
The compression and pushing operations are performed in sequence, and the reversal operation releases the relay contact cr2, and the limit switch LS3 is switched to release the self-holding of the relay CR6.

Next, when cleaning the garbage collection vehicle after the garbage discharge work is completed, switch the changeover switch SW as described above.
After the garbage input box 2 is tilted by switching the switch 1 to the discharge side and the tilting switch SW4 to the tilting side, the inside of the garbage storage box 1 and the garbage input box 2 are cleaned using a cleaning nozzle or the like. When cleaning the inside of the garbage input box 2, if it is necessary to move the garbage loading device A slightly, the scraping switch
After operating the dust loading device A by operating SW3, if the stop switch SW8 is operated at a desired position, the self-holding relay CR6 is demagnetized by the contact operation, and the dust loading device A is immediately stopped.

Therefore, the cleaning work inside the garbage input box 2 can be performed by stopping the garbage loading device A at an arbitrary position.

Although the garbage loading device of this embodiment has been shown in which the pushing plate slides up and down and at the same time swings back and forth, the present invention is not limited to this embodiment.

(Effects of the Invention) As described above, in the present invention, in the garbage discharging state where the garbage input box is tilted at a certain angle, the garbage loading device can be activated by operating the scraping switch once. Dust remaining in the storage chamber can be reliably discharged.

Furthermore, when cleaning the garbage collection vehicle after the discharge work is completed, the garbage loading device can be stopped at any position by operating the stop switch, making it possible to thoroughly clean the garbage dumping box. .

[Brief explanation of the drawing]

The drawings illustrate embodiments of the invention.
The figure is a cross-sectional side view showing a garbage collection vehicle of the device of the present invention;
2 is a hydraulic circuit diagram, FIGS. 3a and 3b are electrical circuit diagrams thereof, and FIG. 4 is a side view showing the mounting positions of electrical contacts and switches shown in the electrical circuit diagram of FIG. 3. 1... Garbage storage box, 2... Garbage input box, 8...
Sliding plate, 11...First telescoping cylinder, 12...Pushing plate, 15...Second telescoping cylinder, SW1...Switching switch, SW3...Scraping switch, SW8...
...Stop switch.

Claims (1)

[Scope of Claims] 1. A garbage storage box mounted on a vehicle frame, which is connected to the rear opening of the garbage storage box so as to be tiltable, and which operates internally in one cycle or in continuous cycles to load garbage into the garbage storage box. In a garbage collection vehicle comprising a garbage input box equipped with a garbage loading device, a plurality of hydraulic actuators for operating the garbage loading device and a control device for operating the plurality of hydraulic actuators are provided, and the control device a changeover switch for selecting the garbage loading operation or the garbage discharge operation; a scraping switch connected to the discharge operation side of the changeover switch and operating the garbage loading device; and a scraping switch for operating the garbage loading device by the scraping switch. A stop switch for stopping the garbage loading box and an electric contact for detecting a certain tilting angle of the garbage loading box with respect to the garbage storage box are provided, and when the garbage loading box is operating in a tilted state, the garbage loading device is activated by operating the scraping switch. 1. A discharge operation control device for a garbage collection vehicle, comprising a control means for operating the garbage loading device for one cycle and stopping the garbage loading device in operation by operating a stop switch. 2. The discharge operation control device for a garbage collection vehicle according to claim 1, wherein the scraping switch and the stop switch are disposed in the driver's cab of the garbage collection vehicle.