JPH0329682B2 - - Google Patents

Description

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

(Prior Art) Generally, a garbage collection vehicle is known in which a garbage input box, which is equipped with a garbage pushing device inside, is connected in a tiltable manner to a rear opening of the garbage storage box.

In such a garbage collection vehicle, the above-mentioned garbage pushing 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.

(Problems to be Solved by the Present Invention) By the way, the start switch of the garbage pushing device is cut off from the power supply by switching the changeover switch to the discharge operation side, and when discharging the garbage, the above-mentioned start switch is operated. However, the garbage pushing device was unable to operate.

Therefore, even if an attempt is made to scrape out the garbage remaining in the storage chamber of the garbage input box that is in the tilted state during garbage discharge, the garbage cannot be scraped out, and after returning the garbage input box to the connected state, the garbage pushing device is activated. It is necessary to collect the waste in a garbage storage box and then perform the discharge operation again, which is a complicated operation.

The present invention has been made in view of the above-mentioned points, and provides an operation control device for a garbage collection vehicle that enables the operation of the garbage pushing device even during garbage discharge.

(Means for solving the problems) The present invention includes a garbage storage box mounted on a vehicle frame,
The garbage receiving box is connected to the rear opening of the garbage storage box so as to be tiltable and is equipped with a garbage pushing device inside, and includes a plurality of hydraulic actuators that actuate the garbage pushing device, and a plurality of hydraulic actuators that are sequentially operated. A control device is provided to operate the
The control device includes a changeover switch that switches contacts in response to garbage loading or discharge work, a start switch that is linked to the loading operation side of the changeover switch and operates the garbage pushing device, and a start switch that operates the garbage pushing device. A scraping switch connected to the discharge work side and operating the garbage pushing device is disposed, the start switch is disposed in the garbage input box, and the scraping switch is disposed in the driver's cab of the garbage collection vehicle. It has the following.

(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 input box 2 is equipped with a garbage pushing device A that compresses and crushes the garbage and pushes it into the garbage storage box 1.

The structure of this garbage pushing device A will be explained below. Guide groove members 7 made of grooved steel are installed on both side walls of the garbage input box 2 so as to serve as reinforcing frames and are inclined from the front upper end to the rear lower part. The pivot 4 is pivotally supported at its upper end.

On the other hand, a sliding plate 8 extending over its entire width is accommodated 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 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 disposal box 2 and projects outward from the inside of the disposal box 2.

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,
The expansion and contraction of the second telescoping cylinder 15 allows the pushing plate 12 to swing back and forth around the shaft support 13.

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 garbage loading work or garbage discharging work, SW2 is a start switch for the garbage pushing device A, and SW3 is a garbage pushing device when discharging garbage. A scraping switch that operates A;
SW4 is a tilting switch that tilts and moves the garbage input box 2, SW5 is an ejection switch that moves the ejection plate 17 forward and backward, SW6 is a selection switch that selects one cycle operation or continuous cycle operation of the garbage pushing device A, SW7 and SW8 is garbage pushing device A
This is a stop switch that stops the operation of the

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 SW
5. A stop switch SW8 is disposed, and on the other hand, on the side of the garbage input box 2, in addition to a start switch SW2, a selection switch SW6, a stop switch SW7, and a sliding plate 8 constituting the garbage pushing device A, 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 upward limit position of the sliding plate 8, LS2 is an electric contact that detects the downward limit position of the sliding plate 8, and LS4 is an electric contact that detects the forward swing limit position of the push plate 12. , LS3 is an electrical contact that detects the backward swing limit position, and LS5 is an electrical contact that detects that the garbage input box 2 is tilted at a certain angle or more with respect to the garbage storage box 1. It consists of a limit switch.

Of these electrical contacts (limit switches)
LS1 and LS2 are disposed between the garbage input box 2 and the sliding plate 8, and a limit switch is disposed on one side, and an actuating body of the limit switch is disposed on the other side for switching control.

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.

Also, CR1, CR2, CR3, CR4, CR5,
CR6 is a relay with contacts cr1 and cr, respectively.
2, cr3, cr4, cr5, and cr6.

Next, the operation process of the embodiment of the present invention will be explained with reference to FIGS. 1A to 1D. The solid line a in FIG. In this case, 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. ing.

In this state, when garbage is input 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 activated, relays CR1 and CR2 are self-holding. energizes solenoid SOLb, and solenoid control valve V2
switch 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.

As a result, the first telescopic cylinder 11 is contracted from the inverted state indicated by the chain line b in FIG. is lowered in parallel while maintaining a substantially horizontal state, and the garbage can be crushed between the pushing plate 12 and the arcuate surface of the bottom of the input box 2.

When the push plate 12 reaches the lowering limit position, the limit switch LS2 is activated, so that the self-holding of the relay CR4 is simultaneously released and the self-holding of the relay CR3 is released.

Therefore, the current passes through the solenoid SOLa,
At the same time as returning the solenoid control valve V1 to the neutral position, the solenoid control valve V2 is switched to the right position.

As a result, the second telescopic cylinder 15 operates to extend from the state where the crushing of the garbage is completed as shown by the chain line c in FIG.
The pushing plate 12 rotates clockwise around the shaft support 13 as a fulcrum until its front surface becomes approximately vertical as shown by the chain line d in FIG. Garbage is removed from the push plate 12 and the input box 2.
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 the solenoid control valve V2 is returned 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 pushing device A is stopped.

On the other hand, when the selection switch SW6 is in the lower position in FIG. 3, that is, in the continuous cycle operating position, the self-holding of the relay CR1 is
The operation is continued via SW6, and the garbage collection operation is continued by the garbage pushing device A unless the self-holding of this relay CR1 is released by a stop switch SW7 or the like.

When the garbage storage box 1 becomes full in this manner, 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 SW.
5 in sequence, the garbage input box 2 is tilted, the discharge plate 17 is moved rearward, and the garbage in the garbage storage box 1 can be discharged to the processing site.

By the way, during the above-mentioned discharge operation, the operation to open the garbage input box of tilt switch SW4 is performed using the relay contact.
First, the second telescopic cylinder 15 is contracted by supplying a current to the solenoid SOLb via cr2.

That is, first, the push plate 12 is reversed in the direction away from the garbage, thereby removing the reaction force from the garbage, and the push plate 12 reaches the reversal limit position and the limit switch is activated.
You will need to switch LS3.

Further, by continuing to operate the tilting switch SW4, a tilting cylinder (not shown) is extended and the lashing device is released, after which 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 set angle with respect to the garbage storage box 1, the limit switch LS5 is switched by a dog or the like (not shown).

Since the discharging operation is started by reversing the pushing plate 12 in this way, it is easy to release the binding of the garbage input box 2 to the garbage storage box 2, and the garbage can be removed between the garbage pushing device and the garbage input box. This is to prevent the dust from getting caught, but if some dust remains in the dust disposal box 2, the scraping switch SW will be activated.
All you have to do is operate 3.

That is, when the garbage input box 2 is in the tilted state, the push plate 12 is in an inverted state, and in addition to the limit switch LS3 being switched, the push plate 12 is in the inverted state.
2 is in the raised position, limit switch LS1 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.

As a result, the contraction operation of the first telescopic cylinder 11,
In other words, the push plate 12 begins to descend.

Hereinafter, as mentioned above, crushing of the garbage pushing device A,
Compressing and pushing operations are carried out in sequence, and dust is scraped out until the relay contact CR2 is released by the reverse operation and the self-holding of the relay CR6 is released by switching the limit switch LS3.

Although the garbage pushing 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, it is not limited to this embodiment.

(Effects of the Invention) As described above, in the present invention, when the scraping switch is operated during garbage discharge, the garbage pushing device can be operated, so when garbage remains in the storage chamber of the garbage input box, the garbage can be removed. The garbage can be reliably discharged, and the discharge work can be carried out smoothly.

[Brief explanation of drawings]

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.
Fig. 2 is a hydraulic circuit diagram, Fig. 3 is an electrical circuit diagram, and Fig. 4 is an electrical contact shown in the electrical circuit diagram of Fig. 3.
FIG. 3 is a side view showing the mounting positions of switches. 1... Garbage storage box, 2... Garbage input box, 8...
Sliding plate, 11...first telescopic cylinder, 12...push plate, 15...second telescopic cylinder.

Claims (1)

[Claims] 1. In a garbage collection vehicle comprising a garbage storage box mounted on a vehicle frame and a garbage input box that is tiltably connected to the rear opening of the garbage storage box and is equipped with a garbage pushing device inside, the garbage pushing device A plurality of hydraulic actuators are provided to operate the hydraulic actuators, and a control device is provided to sequentially operate the plurality of hydraulic actuators. A start switch that is connected to the loading operation side of the switch and operates the garbage pushing device; and a scraping switch that is connected to the discharge operation side of the changeover switch that operates the garbage pushing device; The scraping switch is installed in the garbage input box and in the driver's cab of the garbage collection vehicle, so that the garbage pushing device can be selectively operated from the garbage input box or the driver's seat when loading or discharging garbage. An operation control device for a garbage collection vehicle, characterized in that the operation control device enables the operation of a garbage collection vehicle.