JPH0431961B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a garbage collection vehicle equipped with a loading device composed of a sliding plate and a pushing plate.

(Prior art) Conventionally, in a garbage collection vehicle equipped with a garbage loading device consisting of a sliding plate and a pushing plate, when the start switch is pressed, the pushing plate reverses, crushes, compresses,
A device in which the operation is performed in the order of filling and the garbage is stored in a garbage storage box is known.

(Problem to be solved by the invention) In such a garbage collection vehicle, some garbage may not be crushed and compressed reliably.
Especially during the compression stroke, if the angle formed between the push plate and the bottom wall of the storage chamber does not rotate beyond a certain level,
There is a drawback that it is impossible to fill the storage box with garbage.

Furthermore, even if the garbage loading device is operated again, the pushing plate only compresses the same position of the garbage, so the garbage can no longer be loaded, and each time the worker removes the garbage that is not compressed to the outside. I had to.

In addition, as seen in the one described in Japanese Patent Application Laid-open No. 51-79416, during the compression stroke by the garbage loading device,
When the pressure oil in the second telescoping cylinder reaches a predetermined pressure, the pressure oil being supplied to the second telescoping cylinder is also supplied to the first telescoping cylinder by switching the sequence valve. A garbage loading device for a garbage collection vehicle is provided that is configured to be able to store garbage in a storage box while using both compression and stuffing. However, in the above-mentioned garbage loading device, the loading operation is performed as a series of operations during the compression stroke, so the pushing plate remains in a state in the middle of rotation without rotating forward (toward the garbage storage box side). A situation may occur in which the stuffing operation is performed and then the stuffing operation ends. As a result, the filling operation ends with a lot of garbage left at the bottom of the input box, and this remaining garbage has to be packed again in the next cycle, making it impossible to perform reliable packing, which is inefficient. There was a problem.

The present invention was made in view of this problem, and when the garbage cannot be compressed in the normal movement process, the compression position of the pushing plate can be changed at any time even during the operation, thereby making the garbage packing operation smooth and compact. It is an object of the present invention to provide a garbage loading device for a garbage collection vehicle that can be reliably and efficiently loaded.

(Means for Solving the Problem) A charging box equipped with a garbage loading device having a sliding plate and a pushing plate is connected to the rear opening of the garbage storage box so as to be tiltable, and the sliding plate is driven. In a garbage collection vehicle in which a first telescopic cylinder and a second telescopic cylinder that drives the pushing plate are respectively controlled via electromagnetic switching valves, a first electromagnetic cylinder that telescopically controls the first telescopic cylinder with respect to a hydraulic pump is provided. A switching valve and a second electromagnetic switching valve that telescopically control the second telescoping cylinder are connected in series in this order, while an individual switch for stuffing that independently controls the first telescoping cylinder is disposed, and the second telescoping cylinder is connected in series. An independent switch for reversing is provided to independently control the cylinder, and the independent switch for stuffing extends the second telescopic cylinder and rotates the pushing plate forward by switching the second electromagnetic switching valve. During the compression stroke of the filling device, the contact operation switches the first electromagnetic switching valve to extend the first telescopic cylinder, and performs a filling operation in which the sliding plate is slid upward, and the first telescopic cylinder is configured to supply the return oil from the second telescopic cylinder to the second telescopic cylinder, continue to extend the second telescopic cylinder, and continue to perform a compression operation to rotate the pushing plate forward;
On the other hand, the independent reversing switch is configured to switch the second electromagnetic switching valve and retract the second telescopic cylinder by contacting the reversing switch, so that the push plate can be reversed rearward at any position.

(Function) During the compression stroke, the sliding plate is slightly raised by touching the individual switch for stuffing, and the compression operation position of the pushing plate is changed, thereby compressing the garbage that could not be compressed in the normal position. By touching and operating the single switch for reversing, the pushing plate is reversed, the garbage that cannot be compressed is once loosened, and then the garbage is compressed again, thereby making it easier to compress the garbage.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

In Fig. 1, 1 is a garbage storage box mounted on the body frame of a garbage collection vehicle, and its rear opening 3
A loading box 2 with an open front is connected to the upper end by a pivot 4 so as to be tiltable.

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

The input box 2 is equipped with a garbage loading mechanism that compresses and crushes the garbage and stuffs it into the garbage storage box 1. The configuration of this mechanism will be explained below.

Guide groove members 7 made of channel steel are installed on both side walls of the input box 2 and are inclined from the front upper end to the rear lower part, and the upper end of the guide groove member 7 is provided with the pivot shaft 4.
is pivoted.

On the other hand, a sliding plate 8 extending over the entire width of the input box 2 is housed, 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 along the inner wall of the groove member 7 so as to be freely rollable.

A pivot 16 is pivotally supported on the upper back surface of the sliding plate 8 via a bracket.
Along the back surface of the guide groove member 7, the guide groove member 7 extends beyond the notch 10 formed in the side wall of the input box 2 so as to match the sliding distance of the sliding plate 8, and protrudes outward from the inside of the input box 2. There is. The outwardly protruding pivot 16 and the first telescopic cylinder 11 provided on the outside of the lower part of the input box 2 are connected along the inclination direction of the guide groove member 7 and are deviated upward. 11 allows the sliding plate 8 to reciprocate along the guide groove member 7.

Note that a pivot 16 is pivotally attached to the upper back surface of the sliding plate 8.
As will be described later, one end of the second telescopic cylinder 15 is also pivotally attached to the holder.

Further, at the lower end of the sliding plate 8, a pushing plate 12 that extends completely in the lateral direction of the input box 2 is pivoted 13 so as to be swingable back and forth. A second telescoping cylinder 15 is connected between the pivots 16 pivotally attached to the upper back surface of the moving plate 8.
By this telescopic operation of the second telescopic cylinder 15,
The pushing plate 12 can be swung back and forth around the shaft support 13.

That is, by sequentially controlling the expansion and contraction of these telescopic cylinders 11 and 15, the filling state shown in FIG.
Each operation can be performed.

FIG. 2 shows the hydraulic circuit of the garbage loading device.

In the figure, P is a hydraulic pump, T is an oil reservoir, V1 is a first electromagnetic switching valve of the first telescopic cylinder 11, V2 is a second electromagnetic switching valve of the second telescopic cylinder 15, and these first electromagnetic switching valves V1 and The second electromagnetic switching valve V2 is connected in series to the hydraulic pump P in the order of the first electromagnetic switching valve V1 and the second electromagnetic switching valve V2. The first electromagnetic switching valve V1 connects the solenoids SOL-a and SOL-b to the second electromagnetic switching valve V2.
have solenoids SOL-c and SOL-d, respectively.

FIG. 3 shows an electrical circuit diagram of the garbage loading device.

In the figure, SW-1 is a changeover switch that selects garbage loading work or garbage discharge work, and SW-2
is a start switch for the garbage loading device, SW-3 is a selection switch for selecting one cycle operation or continuous cycle operation of the garbage loading device, SW-4 is a stop switch, and SW-5 is an individual switch for reversing the push plate 12. , SW-6 is an individual switch for raising the sliding plate 8, that is, for filling, and these switches SW-5 or
By touching SW-6, reversing or packing operations can be performed from any operating position.

LS-1 is a limit switch that detects the upward limit position of the sliding plate 8, LS-2 is a limit switch that detects the downward limit position of the sliding plate 8, and LS-4 detects the forward swing limit position of the push plate 12. The limit switch LS-3 is a limit switch that detects the backward swing limit position.

The limit switches LS-1 and LS-2 have an actuating body disposed on one side of the garbage input box 2 and the sliding plate 8, and the limit switches LS-1 and LS-2 are disposed on the other side.

Further, the limit switches LS-3 and LS-4 are arranged on the back surface of the sliding plate 8, and are switched and controlled by guiding the back and forth rocking of the pushing plate 12 by a link mechanism.

CR-1, CR-2, CR-3, CR-4, CR-
5, CR-6, CR-7 are relays with contacts cr-1, cr-2, cr-3, cr-4, cr-, respectively.
5, cr-6, and cr-7.

Also, TR-1 and TR-2 are timers,
Each has contact points tr-1 and tr-2. B is a power source.

Next, the operating process of the embodiment of the present invention will be explained with reference to FIG.

The solid line a in FIG. 1 indicates the end of the garbage filling process or the garbage feeding process. In this state, both the first and second telescoping cylinders 11 and 15 are extended, and the sliding plate 8 is in the raised position. At this time, the limit switch LS-1 is operated, and when the push plate 12 is in the forward swing position, the limit switch LS-4 is operated. In this state, garbage is inputted into the input box storage chamber 6 through the input port 5, the changeover switch SW-1 is switched to the upper position as shown in Fig. 3, and the start switch SW-2 is operated to close the relay CR-1. and CR
-2 is self-held and energizes solenoid SOL-d. As a result, the second electromagnetic switching valve V2 is switched to the left position to contract only the second telescopic cylinder 15, and the push plate 12 is moved as shown by the chain line b in FIG.
Turn it over until the front side is in a nearly horizontal position. When the push plate 12 reaches the limit reversal position, the limit switch LS-3 is activated, the relay CR-3 is self-held, and at the same time, the energization to the relay CR-2 is canceled. As a result, the second electromagnetic switching valve V2 is returned to the neutral position, and at the same time, the solenoid SOL-a is energized to switch the first electromagnetic switching valve V1 to the left position. As a result, the first telescopic cylinder 11 is contracted and enters the garbage crushing process, the sliding plate 8 descends along the guide groove member 7, and the pushing plate 12 connected thereto is moved to the first
As shown by chain lines b and c in the figure, the front surface thereof descends in parallel while maintaining a substantially horizontal state, and the input 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 LS-2 is activated, so the relay CR-4 is activated.
At the same time, relay CR-3 is de-energized. Therefore the current is a solenoid
SOL-c is energized to return the first electromagnetic switching valve V1 to the neutral position and at the same time urge the second electromagnetic switching valve V2 to the right position. Therefore, from the state where the crushing of the garbage is completed as shown by the dashed line c in FIG. It rotates clockwise until it reaches an almost vertical position and enters the compression stroke, and the debris that was primarily crushed in the previous stroke is removed from the pressing plate 1.
2 and the flat surface of the bottom of the input box 2.

At this time, limit switch LS-4 is operated by the action of the link mechanism, and relay CR-5 is self-held, and at the same time, the energization of relay CR-4 is canceled.

As a result, the first telescopic cylinder 11 is extended from the end of the compression stroke shown by the chain line d in FIG. It rises, and the garbage compressed in the previous step can be stuffed into the garbage storage box 1.

Note that from the inversion completed state shown in FIG.
In the crushing process leading to this, the contact operation of limit switch LS-3, which detects the end of reversal, causes relay CR-3 to self-hold as described above, but at the same time, timer TR-2 continues to be energized.

As a result, the sliding plate 8 starts descending, and when the set time elapses, the contact tr-2 closes and the relay CR-
Activate 7.

Therefore, relay CR- is connected via contact CR-7.
4 is energized, relay CR-3 is de-energized to stop the sliding plate 8 from lowering, and then the compression stroke by the pushing plate 12 is started via the contact CR-4 as described above.

In this way, even if the sliding plate 8 is prevented from descending due to dust and cannot reach the crushing limit position, that is, even if the limit switch LS-2 is not switched, the next movement will occur after a certain period of time has passed. It is possible to move on to the compression stroke.

Furthermore, when the compression stroke is started by energizing relay CR-4, limit switch LS-3 switches and energizing CR-7 is cut off.
The timer TR-1 continues to be energized via the contact cr-7.

Then, after a certain period of time has elapsed, relay CR-6 is activated via contact tr-1, and then relay CR-5 is energized via contact cr-6, thereby self-holding.

Therefore, since the power supply to relay CR-4 is cut off, the compression stroke by the pushing plate 12 is stopped, and the sliding plate 8 moves up, that is, the stuffing stroke begins.

In this way, even if the pushing plate 12 is prevented from being compressed by dust and cannot reach the compression limit position, that is, even if the limit switch LS-4 is not switched, it is possible to proceed to the next stuffing stroke. can.

By the way, if the garbage thrown into the storage chamber 6 cannot be compressed by the crushing stroke or the compression stroke (see Fig. 5), the tire TR-1 moves to the filling stroke, but the pushing plate 12 is not rotated around the pivot support 13 to at least a substantially vertical position, the operation of filling the storage box 1 with garbage is impossible.

In this case, the individual filling switch SW-6 may be operated. By this contact operation, the solenoid SOL-b is directly energized, and in conjunction with the energization of the solenoid SOL-c due to the compression stroke, the pressure oil from the hydraulic pump P is discharged by extending the first telescopic cylinder 11. The second telescopic cylinder 15 is expanded with oil.

From this, the push plate 12 will rise while continuing the compression stroke, and by stopping the rise of the push plate 12 at a predetermined position, the compression operation position of the push plate 12 can be changed (see Figure 6). , thereby compressing debris that could not be compressed in its normal position. As a result, the pushing plate 12 rotates in a substantially vertical position, and the garbage can be stuffed into the storage box 1.

In addition, by operating the single reversing switch SW-5, the pushing plate 12 is reversed, and the garbage that cannot be compressed is once loosened and then compressed again, thereby making it easier to compress the garbage.

In this way, by selectively using the independent switch SW-5 for reversing and the independent switch SW-6 for stuffing depending on the type of garbage, the stuffing operation of garbage can be carried out smoothly, reliably and efficiently.

Further, the reversing operation of the push plate 12 by the independent reversing switch SW-5 is also effective in releasing the jamming of dust.

(Effects of the Invention) As described above, according to the present invention, during the compression stroke, the individual stuffing switch is operated to slightly raise the sliding plate and the compression operation position of the pushing plate is changed. It is possible to compress the garbage that cannot be compressed in the normal position, and by operating the single switch for reversing, the pushing plate can be reversed, compressed, and the clean garbage can be loosened once and then compressed again. , it is possible to easily compress the garbage, and the operation of stuffing the garbage can be carried out smoothly, reliably and efficiently.

Furthermore, the reversing operation of the pushing plate by the single reversing switch is also effective in releasing the jamming of dust.

[Brief explanation of drawings]

1. Fig. 1 is a cross-sectional side view showing a garbage loading device for a garbage collection vehicle according to the present invention, Fig. 2 is a hydraulic circuit diagram, Fig. 3 is an electric circuit diagram of the same, and Fig. 4 is an electric circuit of Fig. 3. Figure 5 is a side view showing the mounting positions of the electrical contacts and switches shown in the figure, Figure 5 is a side view showing the conventional compression state, and Figure 6 is a side view showing the state in which the individual packing switch is in contact. be. 1... Garbage storage box, 2... Input box, 8... Sliding plate, 1
DESCRIPTION OF SYMBOLS 1...First telescopic cylinder, 12...Push plate, 15...Second telescopic cylinder, V1...First electromagnetic switching valve, V2...
Second electromagnetic switching valve, SW-5...independent switch for reversing, SW-6...independent switch for stuffing.

Claims (1)

[Scope of Claims] 1. A loading box equipped with a garbage loading device having a sliding plate and a pushing plate is connected to the rear opening of the garbage storage box so as to be tiltable, and a first mechanism is configured to drive the sliding plate. In a garbage collection vehicle in which a telescoping cylinder and a second telescoping cylinder that drives the pushing plate are controlled via electromagnetic switching valves, a first electromagnetic switching valve that controls telescoping of the first telescoping cylinder with respect to a hydraulic pump. , a second electromagnetic switching valve for controlling the expansion and contraction of the second telescoping cylinder is connected in series, and an individual switch for stuffing that independently controls the first expansion and contraction cylinder is disposed, and The garbage loading device is provided with an independent reversing switch that is independently controlled, and the independent loading switch extends the second telescopic cylinder and rotates the pushing plate forward by switching the second electromagnetic switching valve. During the compression stroke, the contact operation switches the first electromagnetic switching valve to extend the first telescoping cylinder, performs a stuffing operation in which the sliding plate is slid upward, and at the same time configured to supply return oil to the second telescopic cylinder, continue to extend the second telescopic cylinder, and continue to perform a compression operation to rotate the pushing plate forward;
On the other hand, the independent switch for reversing is configured to switch the second electromagnetic switching valve and retract the second telescopic cylinder by contacting the switch, so that the push plate can be reversed backward at any position. Garbage loading device for collection vehicles. 2 The first electromagnetic switching valve and the second electromagnetic switching valve are switched and controlled by a limit switch that detects each limit position of the garbage loading device or a timer that controls the crushing stroke and compression stroke of the garbage loading device. A garbage loading device for a garbage collection vehicle according to claim 1.