JPH0329683B2 - - Google Patents

Description

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

(Prior Art) Generally, a garbage collection vehicle is known in which a garbage loading box equipped with an internal garbage loading device is connected to the rear opening of the garbage storage box so as to be tiltable via a tilting cylinder. 57-20201), and the garbage disposal box is usually secured to the garbage storage box by a lashing device, as shown in Japanese Patent Publication No. 56-15361.

The garbage collected by such a garbage collection vehicle is discharged by tilting the garbage storage box or retracting the discharge plate after the garbage input box is tilted. The above-mentioned securing devices must be released prior to

(Problems to be Solved by the Present Invention) By the way, when discharging garbage, the garbage storage box is almost fully loaded with garbage, and the reaction force from the garbage is acting on the garbage loading device. It is.
Therefore, even if you try to release the lashing of the garbage input box to the garbage storage box in order to discharge the garbage, the reaction force of the garbage acts on the garbage input box via the garbage loading device, so the lashing device does not easily come off,
There was a tendency to release the lashing device with excessive force. In addition, if garbage gets caught between the tip of the garbage loading device and the garbage input box, the garbage will not be discharged even if the garbage input box is tilted, and the operator will have to operate the garbage loading device again. There was a problem that the discharge work could not be carried out smoothly.

The present invention has been made in view of the above points, and is a garbage collection vehicle discharge control system that allows the lashing device of the garbage input box to operate smoothly and at the same time discharges the garbage without causing garbage to become trapped. It provides equipment.

(Means for Solving the Problems) The present invention includes a garbage storage box and a garbage charging box that is tiltably connected to the rear opening of the garbage storage box via a tilting cylinder and equipped with a garbage loading device inside. The garbage collection vehicle is provided with a tilting switch that tilts the garbage input box with respect to the garbage storage box, and the garbage loading device is provided with at least a pushing plate that is swingable via a pushing cylinder, and When the garbage disposal box is tilted via a switch, the control valve for the push cylinder is switched and controlled so that the push plate is operated in reverse.

(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 protruding 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 operation of the second telescoping cylinder 15 allows the pushing plate 12 to swing back and forth around the shaft support 13.

Note that 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 the solenoid control valve of the first telescopic cylinder 11, V2 is the solenoid control valve of the second telescopic cylinder 15, the solenoid control valve V1 is the solenoid SOLc, SOLd, and the solenoid control valve V2 is the solenoid SOLa, solenoid SOLb.
They each have

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 switching switch for selecting garbage loading operation or garbage discharging operation. a scraping switch that operates device 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 loading device A, and 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 provided, and on the other hand, a starting switch SW2, a selection switch SW6, a stop switch SW7, and a sliding plate 8 constituting the trash pushing device A, although not shown in detail, are provided on the garbage input box 2 side. , 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 position of the pushing plate 12. Contact point LS3 is an electric contact point that detects the backward swing limit position, and LS5 is an electric contact point that detects that the garbage disposal box 2 is tilted at a certain angle or more with respect to the garbage storage box 1. In the example, 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, and the switching is 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.

Furthermore, the LS5 is disposed in the garbage input box 2 and is 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, put garbage into the storage chamber 6 through the input port 5, change the changeover switch SW1 to the upper position shown in Fig. 3, and activate the start switch SW2, so that 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 retracted from the inverted state shown by the dashed 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 the solenoid control valve V1 is returned to the neutral position, the solenoid control valve V2 is urged 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 bottom surfaces of the

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 urging 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 with its front side maintained in a substantially vertical state, 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.

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.

In this case, no current flows to the starting switch SW2 side by switching the changeover switch SW1, and the garbage loading device A will not operate even if the starting switch SW2 is operated by mistake.

By the way, during the above-mentioned discharge operation, the second telescopic cylinder 15 is contracted because the operation of the tilt switch SW4 supplies current through the relay contact cr2 in accordance with the solenoid SOLb.

That is, by operating the tilting switch SW4, the push plate 12 is first reversed in a direction away from the garbage, thereby removing the reaction force from the garbage. And push plate 1
2 reaches the reversal limit position and the limit switch LS
3 will be switched.

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).

By reversing the pushing plate 12 in this way, it is easy to release the binding of the garbage charging box 2 to the garbage storage box 2, and garbage is caught between the garbage loading device and the garbage charging box. However, if some garbage remains in the garbage input box 2, the scraping switch SW3 can be operated.

The relay is activated by operating this scraping switch SW3.
CR6 is self-holding and at the same time the current is relay CR
3, the crushing, compression, and pushing operations are performed sequentially by the garbage loading device A as described above, and the relay contact cr2 is released by the reversal operation, and the relay contact cr2 is opened by switching the limit switch LS3.
The garbage will be scraped out until CR6's self-retention is released.

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 push-in stroke, and when the push-in stroke is completed, the limit switch LS1 is activated.
Since this switches, the self-holding of relay CR1 is released and the operation of garbage loading 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
This continues via SW6, and the garbage collection operation by the garbage loading device A will continue unless the self-holding of this relay CR1 is released by a stop switch SW7 or the like.

The garbage loading device shown in this embodiment is of a single plate type in which the pushing plate slides up and down and swings back and forth at the same time. Alternatively, a two-plate type with a rotating plate may be used.

(Effects of the Invention) As described above, according to the present invention, the pushing plate of the garbage loading device reverses in the direction away from the garbage before tilting the garbage input box when discharging garbage. Not only can the reaction force of the garbage against the box be reduced to smoothly release the binding of the garbage input box, but also it is possible to prevent the garbage from getting caught between the garbage input box and the garbage loading device and not being discharged. It is something.

[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;
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 consisting of a garbage storage box mounted on a vehicle frame, and a garbage input box connected to the rear opening thereof so as to be tiltable and tiltable via a tilting cylinder and equipped with a garbage loading device inside. , a tilting switch is provided to control the tilting of the garbage input box, and the garbage loading device is provided with a pushing plate that is swingable via at least a pushing cylinder, and the control valve for the pushing cylinder is adjusted by operating the tilting switch. A discharge control device for a garbage collection vehicle, characterized in that the pushing plate is operated in a direction away from the garbage prior to the tilting of the garbage input box by the tilting cylinder during garbage discharge.