JPS61226401A - Garbage push-in controller for garbage wagon - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

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

(Prior art) Conventionally, a garbage input box is attached to the rear opening of the garbage storage box so as to be tiltable, and the garbage pushing device equipped on the garbage input box is operated by hydraulic pressure that is mechanically switched and controlled at its operating limit position. A garbage collection vehicle that is sequentially operated by a switching valve and pushes garbage thrown into a dumping box into a garbage storage box is known (see, for example, Japanese Patent Laid-Open No. 150859/1985).

In such a garbage collection vehicle, depending on the garbage, it may not be possible to reliably operate the vehicle to the operating limit position.1 For example, if the garbage is not sufficiently compressed between the pushing plate and the bottom wall of the storage chamber during the compression stroke, the operation may not reach the compression limit position. Since the container does not rotate until the end of the rotation, the next step, which is to fill the storage box with garbage, cannot be carried out.

In this case, even if the garbage pushing device is operated again, it only compresses the same part of the garbage, so there is a drawback that the operator has to remove the garbage that is not compressed each time.

(Problems to be Solved by the Present Invention) The present invention was made in view of the above problem, and when it is not possible to proceed to the next operation stroke because the first operation limit position is not reached during the garbage pushing operation, the automatic It is an object of the present invention to provide a garbage pushing control device for a garbage collection vehicle, which causes a garbage pushing device to move to a different stroke at each time.

(Example) As shown in FIG. 1, l is a garbage storage box mounted on the body frame of a garbage collection vehicle, and a garbage input box 3 with an open front is attached to the rear opening 2 of the garbage storage box on the end shaft. It is connected so that it can tilt at 4. This input box 3 has a garbage input port 5 opened at the lower part of the back surface.

In addition to forming the dust storage chamber 6 at the bottom, inside it is... ! It is equipped with a garbage pushing device 7 for pushing garbage into a garbage storage box l.

To explain this garbage pushing device 7, first, guide grooves 8 are provided on both side walls of the input box 3 and are inclined downward toward the rear. A sliding plate 9 extending over the entire width of the input box 3 is housed in the input box 3, and on both sides of the sliding plate 9,
A sliding member 10 that slidably fits into the guide groove 8 is fixed.

Between this sliding member 10 and the lower part of the input box 3, a first telescopic cylinder 11 provided on the outside of the input box 3 is inserted into the guide groove 8.
This first telescopic cylinder 11 is connected along the inclination direction of
The sliding plate 9 is moved up and down along the guide groove 8 by the expansion and contraction operation.

Further, at the lower end of the sliding plate 9, a pushing plate 12 extending over the entire width of the input box 3 is pivotally attached to a support shaft 13.
A second telescopic cylinder 14 is connected between the protruding piece 12a protruding from the front surface of the sliding plate 9 and the upper part of the sliding plate 9, and by the telescopic operation of the second telescopic cylinder 14, the pushing plate 12 is moved to the support shaft 13.
Rotate it back and forth.

The first and second telescopic cylinders 11 of the garbage pushing device 7.
14 is connected to a hydraulic circuit as shown in FIG.

The hydraulic circuit includes an operating valve V for forward/reverse switching, a first hydraulic switching valve v1 for controlling the first telescopic cylinder 11, and a second hydraulic switching valve v2 for controlling the second telescopic cylinder 14, A first hydraulic switching valve v1 and a second hydraulic switching valve v2 are connected in parallel to the downstream side of the valve V, and the first hydraulic switching valve Ml
The first telescopic cylinder 11 and the second telescopic cylinder 14 are connected to the second hydraulic switching valve v2, respectively.

The operation valve V has a spring center type and is connected to a solenoid 5.
It is a closed center 4-way 3-position electromagnetic switching valve having OLa and 5OLb, while the first and second hydraulic switching valves Vl and V2 are detent-type switching valves of 4-way 2-position type.

The operating valve V, the first hydraulic switching valve v1, and the second hydraulic switching valve v2 are fixed to the upper part of the input box 3, and the solenoids 5OLa and 5OLb of the operating valve V are connected to an electric circuit described later.

Note that a pressure switch PS is provided in the extension side circuit of the second telescoping cylinder 14.

On the other hand, the first and f! A first switching operation rod 17 and a second switching operation rod 18 are connected to the tips of the operating rods 15.16 of the i42 hydraulic switching valves Vl and V2. Stoppers 19, 20 and 21 extend downwardly through the upper part of 3, respectively.
．． 22 and springs 23, 24 and 25, 26.

By the way, the outer cylinder of the second telescopic cylinder 14 is provided with a first operating member 27, and the first operating member 27 is an insertion portion that is inserted between the upper and lower stops 19° and 20 of the first switching operating rod 17. 28, the first operating member 27 moves in accordance with the swinging of the push plate 12, and the insertion portion 28 is moved by the springs 2, 3 .
24 to a stopper 19.26 to switch the first hydraulic switching valve v1.

Further, a second operating member 29 is provided on the sliding plate 9,
The second operation member 29 has an insertion portion 30 that is inserted between the upper and lower stoppers 21 and 22 of the second switching operation rod 18, and the second operation member 29 moves in accordance with the vertical movement of the sliding plate 9 and is inserted through the upper and lower stops 21 and 22 of the second switching operation rod 18. The part 30 is connected to the stopper 21.2 via the spring 25.26.
1 to switch the second hydraulic switching valve v2.

Further, the tip of the operating rod 15 of the first hydraulic switching valve Vl is fitted into a long hole 31a formed in one end of the operating rod 31, and the other end of the operating rod 31 is connected to the operating rod 15 through the operating rod 15. In order to forcibly switch the w41 hydraulic switching valve Vl, a rotary solenoid S having a solenoid 5QLcl as an actuating device is connected.

Next, the electric circuit will be explained with reference to FIG. 3. B is a power source such as a battery, LS6 is an electric contact that is closed in connection with the connection of a power take-off device (not shown), and swi is an operation that operates the garbage pushing device 7. The switch, SW2 is a stop switch arranged on the left and right sides of the garbage inlet 5, and SW3 is the push plate 1.
SW8 is a reversing switch for reversing operation of SW2, and SW8 is a changeover switch for selecting a garbage loading operation or a garbage discharging operation.

CR1, CR2 and CR4 are relays, contacts cr1, c
It has r2 and cr4.

Further, PLI and PL2 are a power supply detection pilot lamp and a loading operation pilot lamp, respectively.
5OLa and 5OLb are solenoids for switching the operation valve V (7), 5OLc is a solenoid for operating the rotary solenoid S, and pS is a contact point of the pressure switch PS.

Next, to explain the operation, first, the hydraulic pump is activated by contacting the power take-off device (not shown), and the relay CRI is energized via the electric contact LS6, and as a result, the pilot lamp PLI is turned on via the contact crl. and work becomes possible.

Thereafter, by switching the changeover switch SW8 upward and closing the operating switch SW1, the relay CR2 is excited, and the solenoid 5OLb is energized via its contact cr2. At this time, contact cr2 (a contact), cr4
Relay CR2 is self-held via (b contact).

By energizing the solenoid 5OLb, the operation valve V is switched to the left position, and pressure oil is supplied to the first and second telescopic cylinders 11.14 via the first and second hydraulic switching valves Vl and V2, and the sliding Both switching valves Vl and V2 are switched in conjunction with the operation of the moving plate 9 and push plate 12.

The garbage is thrown in, crushed, compressed, and stuffed in sequence.

FIG. 1 shows the end of the garbage pushing stroke, in which the first telescopic cylinder 11 is extended and the sliding plate 9 is raised together with the pushing plate 12, and at this time the second telescopic cylinder 14 is already in the extended state. be. When the sliding plate 9 reaches the upper end, the insertion portion 30 of the second operating member 29 contacts the upper limit stopper 21 of the second switching operation rod 18 via the spring 25, and the second hydraulic switching valve v2 is in the left position. to the right position and position I.
The second telescopic cylinder 14 is shortened and the pushing plate 1 is
2 to the rear (reversal process).

When the push plate 12 rotates backward and reaches the reversal limit position,
The insertion portion 28 of the first operation member 27 is connected to the first switching operation rod 1
7 through the spring 23, the first hydraulic switching valve Vl is switched from the right position to the left position and held there, and the first telescopic cylinder 11 is shortened to cause the sliding Jf9 to move downward. The thrown garbage is crushed by the pressing plate 12 (crushing process).

When the sliding plate 9 descends and reaches the crushing limit position, the insertion portion 30 of the second operating member 29 connects with the second switching operating rod 18.
comes into contact with the lower limit stopper 22 of via the spring 26,
The second hydraulic switching valve v2 is switched from the right position to the left position for positioning, extends the second telescopic cylinder 14, rotates the push plate 12 forward, and transfers the crushed garbage to the secondary position. (compression process).

When the push plate 12 rotates forward and reaches the compression/retraction limit position, the insertion portion 28 of the first operation member 27 abuts the lower limit stopper 20 of the first switching operation rod 17 via the spring 24, and the first The hydraulic switching valve v1 is switched from the left position to the right position and is at position 1h, and the first telescopic cylinder 11 is extended to move the sliding plate 9 upward -Ih, and the compressed garbage is pushed into the plate 12. is pushed into the garbage storage box position (filling process).

When the pushing plate 12 rises, it returns to the state shown in FIG. 1, and one cycle of charging, crushing, compressing, and stuffing the garbage is completed.

By the way, when the garbage thrown into the storage chamber 6 cannot be compressed by the compression stroke, the pressure oil continues to be supplied to the extension side of the second telescoping cylinder 14, and the pressure increases. When this pressure reaches a certain set value, the pressure switch PS is activated and its contacts ps are closed.

Therefore, the current from the power source B flows to the solenoid 5OLc, and as a result, the operating rod 31 is moved to the operating rod 15 by the counterclockwise rotation of the rotary solenoid S (FIG. 2).
, and the first hydraulic switching valve V1 is forcibly switched to the right position. Therefore, the pushing plate 12 rises while continuing the compression stroke.

In order to start the pushing process, the garbage has to be compressed in a chewing manner at different locations.1 The garbage that could not be compressed completely in the normal sequential operation is compressed by the pushing plate 12 and moved to the garbage storage box L. packed into.

At this time, when the compression stroke starts, the contact ps of the pressure switch PS is opened and the rotary solenoid S returns to the valve operating state, but the long hole formed in the operating rod 31 controls the operating rod 15. To maintain the condition,
The first hydraulic switching valve vl remains switched to the right position,
Even when the push plate 12 reaches the compression limit position and the insertion portion 28 comes into contact with the lower limit stopper 20, no change occurs in the switching state of the first hydraulic switching valve v1.

In the above embodiment, during the compression stroke of the dust pushing device, the switching valve is switched so that the operating device detects a pressure equal to or higher than the − chamber and moves to the next stroke, the pushing stroke. For example, if the device is a garbage pushing device other than a garbage pushing device using a sliding plate and a pushing plate, it can be selected as appropriate during the necessary stroke, and all hydraulic switching valves can be switched. You can also do this.

(Effects of the Invention) As described above, in the present invention, when it is not possible to proceed to the next processing step,! ! It becomes possible to automatically shift the garbage harvesting process to another process such as the next process, and the workability of the garbage collection work can be improved.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a vertical sectional side view of a main part of a garbage collection vehicle, and FIG. 2 is a hydraulic circuit diagram. FIG. 3 is an electrical circuit diagram. l...Garbage storage box, 3...Garbage input box, 7...Garbage pushing device, vl...First hydraulic switching valve. v2...Second hydraulic switching valve, S...Rotary solenoid

Claims (3)

[Claims] (1) A garbage input box is installed next to the rear opening of the garbage storage box,
The garbage pushing device installed in the garbage input box is sequentially operated by a plurality of hydraulic switching valves that are mechanically switched and controlled at the operating limit position of the garbage loading device, and the garbage thrown into the garbage input box is pushed into the garbage storage box. A pressure switch is disposed in a hydraulic circuit for controlling the garbage pushing device, and when the pressure switch is closed, at least one hydraulic switching valve is forcibly switched via an actuating device, A garbage pushing control device for a garbage collection vehicle, characterized in that the garbage pushing treatment is shifted to a different process. (2) The garbage pushing control device for a garbage collection vehicle according to claim 1, wherein the actuating device is constituted by a rotary solenoid and is connected to the actuating rod of one hydraulic switching valve via a long hole. (3) The garbage pushing device is composed of a sliding plate and a pushing plate, and the pressure switch detects a pressure above a certain level during the compression stroke by the pushing plate, and when the pressure switch is closed, the dirt is transferred via a rotary solenoid. A garbage pushing control device for a garbage collection vehicle according to claim 1 or 2, wherein the pushing strokes of the sliding plates are operated at the same time.