JPH01122804A - Refuse collecting cart discharge controller - Google Patents

Abstract

PURPOSE:To make it possible to discharge refuse safety and promptly by shifting a push plate backward in interlocking with operation of a cylinder for tightly fastening a refuse-charged box, so as to loosen the tight fastening, and then working an operating switch so as to incline the refuse-charged box. CONSTITUTION:In discharging refuse, when a tightly fastening switch is turned on, an electric current flows into a solenoid SOLf so that a solenoid controlled valve V2 is shifted downward, and oil pressure is transmitted to an oil chamber on the piston rod side of a push cylinder 12 so as to compress the push cylinder 12 and shift a push plate backward. At the same time, an electric contact point is switched so that an electric current flows into a solenoid SoLa. In this case, a solenoid controlled valve V4 is shifted upward so that a tightly fastening cylinder 15 is elongated to loosen the tight fastening. Then, an operating switch is changed over so that an electric current flows into a solenoid SOLm, and the upper side of a solenoid controlled valve V5 is shifted so as to elongate a rising/falling cylinder 14 and incline a refuse-charged box. Thus, discharge of refuse can be carried out safely and promptly.

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 well known in which a garbage input box equipped with a garbage processing device inside is connected in a tiltable manner to a rear opening of the garbage storage box.

It is known that the garbage processing device is provided with a push plate, and a push cylinder that swings the push plate is used to open and close the garbage input box (Japanese Patent Publication No. 59-4
(See Publication No. 1882).

Furthermore, a garbage collection vehicle is also known that is provided with a lifting cylinder that tilts a garbage input box separately from a pushing cylinder that swings a pushing plate.

(Problems to be Solved by the Present Invention) In the former type of garbage collection vehicle, when the garbage input box is opened to discharge the garbage, the work is started by retracting the push plate, and as a result, the lashing device is affected. In addition to eliminating the reaction force, there is no jamming caused by the pushing plate, and the ejection work can be carried out safely.
There is a waiting time until the pushing plate reaches the retraction limit position, and there is a drawback that the ejection operation cannot be carried out quickly.

On the other hand, in the latter type of garbage collection vehicle, the garbage input box can be opened regardless of the position of the push plate, which speeds up the discharge operation, but on the other hand, if the push plate is at the end position when discharging, the lashing device is not fully loaded. When the lashing device is released due to the reaction force of the dust, the pressure suddenly drops and an abnormal noise is generated, causing a sense of anxiety for the operator.

The present invention has been made in view of the above-mentioned points, and it is an object of the present invention to provide a garbage collection vehicle that can carry out discharging work quickly and safely. .

(Means for Solving the Problems) The present invention includes a dust storage box mounted on a vehicle body, and a garbage input box tiltably connected to a rear opening of the dust storage box via an elevating cylinder. a garbage disposal device equipped inside the garbage disposal box and equipped with a pushing plate that does not swing through at least a pushing cylinder; and a lashing device that secures the garbage disposal box to the garbage storage box. A garbage collection vehicle comprising: a lashing switch that controls expansion and contraction of the lashing cylinder of the lashing device; an electric contact that detects the forward limit position of the push plate; and an open/close switch that controls the lifting cylinder of the garbage input box. is provided, and is configured such that when the lashing switch is operated, the pushing plate is slightly retracted via the electrical contact, and then the lashing device is released, and the garbage input box is further tilted when the opening/closing switch is operated. be.

(Function) When the lashing switch is operated when discharging trash, the pushing plate moves backward slightly, and after alleviating the reaction force acting on the pushing plate, that is, the force acting on the lashing device, the lashing cylinder extends. The lashing wind then separates from the U-bolt.

When the lashing wind is released from the U-bolt, the opening/closing switch is operated to tilt the garbage input box relative to the garbage storage box.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.
1 is a garbage collection vehicle, and a garbage storage box 3 is placed on a vehicle frame 2, and the garbage storage box 3 is pivoted by a dump cylinder 4 installed between the vehicle frame 2 and the garbage storage box 3. It can be tilted freely around the part.

A garbage input box 7 is connected to the rear opening 3a of the garbage storage box 3 and is pivoted 6 above the rear opening 3a, and the garbage input box 7 is located between the garbage storage box 3 and the garbage input box 7. It can be opened and closed as appropriate around the pivot 6 by an elevating cylinder 14 installed in the holder.

Further, this garbage input box 7 has an input port 8 opened at the rear thereof, and a garbage processing device 9 is installed inside the garbage input box 7.

The garbage processing device 9 includes a pushing plate 10, a rotating plate 11,
It consists of a push cylinder 12, which is a hydraulic actuator for driving them, and a hydraulic motor 13 (see Fig. 2), and as is well known in the art, the garbage input box 7 is stored by the cooperative action of the push plate 10 and the rotary plate 11. The garbage dumped in the section 18 is loaded into the garbage storage box 3.

On the other hand, a lashing cylinder 15 whose one end is pivotally supported is disposed at the rear of the rear surface of the garbage storage box 3, and the other end is connected to a lashing cylinder 16 which is pivotally supported at the bottom of the garbage storage box 3, and is normally secured. A lashing wind 16 is engaged with a U-bolt 17 fixed to the front surface of the garbage input box 7 through a cylinder 15, and the garbage input box 7 is secured to the garbage storage box 3.

Next, to explain the hydraulic circuit with reference to FIG. 2, P is a hydraulic pump, T is an oil reservoir, Vl is an electromagnetic control valve that controls the dump cylinder 4, v2 is an electromagnetic control valve that controls the push cylinder 12, and ■3 is an electromagnetic control valve that controls the push cylinder 12. An electromagnetic control valve (4) controls the hydraulic motor 3, an electromagnetic control valve (4) controls the lashing cylinder 15, and an electromagnetic control valve (5) controls the lifting cylinder 14. V2. V3. V4. V
5 is the spool operating solenoid 5OLc, 5QLd, 5
OLe, 5OLf, SOLg, 5OLh.

It is equipped with 5OLa, 5OLj, and SOLm.

Then, the electromagnetic control valve V1. V2. V3. V4,■5
Among them, the above-mentioned electromagnetic control valve V2. V4.5 is arranged in parallel to the discharge pipe of the hydraulic pump P, while the electromagnetic control valve V1. V3 is arranged in parallel to the electromagnetic control valve V2,
Furthermore, electromagnetic control valve group V2. V4. V5 and solenoid control valve group V
1. It is arranged in series with V3.

V6. V7 is an electromagnetic opening/closing valve normally energized to a position that prevents contraction of the lifting cylinder 14 and allows expansion of the lifting cylinder 14, and the spool operating solenoids 5OLk and 5QL
It is equipped with l.

Next, the electric circuit will be explained with reference to FIGS. 3 and 4.

[3 is a power source such as a battery, SWI is a selection switch that selects loading work or discharge work, 5WIO is a dump switch that tilts the garbage storage box 2, 5W11 is an open/close switch that opens and closes the garbage input box 7, 5W12.3W13 is a 5W safety switch that disables evacuation work from the driver's seat
16 is a lashing switch that releases the lashing mold 16 described above.

Among these switch groups, the selection switch SWl, the open/close switch 5W11, and the dump switch 5WIO are arranged in the driver's seat, and the safety switch 5W12.3W13 and the securing switch 5W16 are arranged at the rear of the garbage storage box 3.

Further, LSI is an electric contact that operates when the pushing plate 10 is at the forward limit position, LS4 is an electric contact that operates when the garbage storage box 3 is in the traveling position, and LS5 is an electric contact that operates when the garbage input box 7 is tilted at a predetermined angle. Electrical contact, LS6 is garbage input box 7
LS7 is an electrical contact that is activated when the power take-off device (not shown) is connected.

R7 and R8 are relays, and contacts r7. It is equipped with r8.

1'L2. PL3. PL4 is a pilot lamp, which lights up when the safety switch 5W12.5W13 is activated, and the pilot lamp PL2 is located in the driver's seat. PL4 is arranged at the rear of the garbage storage box 3, respectively.

Next, the operation will be explained. First, when a power take-off device (not shown) is operated, the electric contact LS7 is closed and the relay R7 is energized. Excitation of relay R7 continues energizing the subsequent circuits via its a contact r7.

Here, after switching the selection switch SWI to the upper position, dumping garbage from the input port 8 into the garbage input box 7 and pressing the start switch (not shown), the push plate 10 and the rotary plate 15 are pressed, although not explained in detail. The garbage processing device 9 consisting of the following operates as appropriate and pushes the garbage into the garbage storage box 3.

After loading the garbage into the garbage storage box 3, the vehicle travels to a designated treatment site and discharges the garbage.

For this ejection, first the selection switch SWI is switched to the lower position, and then the lashing switch 5W16 is turned to the upper position.

As a result, the current flows through selection switch SW1. Safety switch 5
W12.5W13. Lashing switch SW+6, electrical contact L
It flows through the SI and b contacts r2 to the solenoid 5OLf, switching the electromagnetic control valve V2 to the lower position. Then, the pressure oil from the hydraulic pump P flows into the piston rod side oil chamber of the push cylinder 12, and the piston back pressure side oil chamber communicates with the oil reservoir T, so the push cylinder 12 contracts.

As the push cylinder 12 is reduced and the push plate IO is retracted, the electric contact LSI is switched at the same time, so the current from the securing switch 5WI6 is cut off from the solenoid 5OLf and is transferred to the solenoid 5OLa via the electric contact LSI.
flows to

Therefore, as a result of switching the solenoid control valve 2 to the neutral position and simultaneously switching the solenoid control valve V4 to the upper position, the pressure oil from the hydraulic pump P is supplied to the piston back pressure side oil chamber of the lashing cylinder I5, and its When the pressure reaches a certain level,
The piston rod side oil chamber communicates with the oil reservoir T via the pilot check valve, and the securing cylinder 15 extends and rotates the securing m16 clockwise. Withdrawal from 7.

Therefore, the binding of the garbage input box 7 to the garbage storage box 3 is released.

In this way, prior to the extension of the lashing cylinder 15, the pushing plate 1
0 is operated slightly backward, the pressure of the dust acting on the pushing plate IO is reduced, and the burden on the lashing cylinder 15 is reduced.

After this, when the open/close switch 5WII is switched to the upper position, the current flows to the solenoid SOLm, and the electromagnetic control valve V5
switch to the upper position.

Then, the pressure oil flows through the electromagnetic on-off valve V6. It is supplied to the piston back pressure side oil chamber of the lifting cylinder 14 via V7.

Then, when the garbage input box 7 opens at a certain angle, the electrical contact L
Since S5 is switched, after this dump switch 5WIO
When the solenoid 5OLc is switched to the upper position, a current flows through the solenoid 5OLc, the electromagnetic control valve V1 is switched to the upper position, the dump cylinder 4 is extended, the garbage storage box 2 is tilted, and the garbage is discharged.

When the dump switch 5W10 is switched to the downward position after the discharge of the garbage is completed, the solenoid 5QLd is energized, and the electromagnetic control valve Vl is switched to the downward position, which causes the dump cylinder 4 to contract and lower the garbage storage box 3. let

When the garbage storage box 3 returns to the running position, the electric contact LS4 switches, so when the open/close switch 5WII is then switched to the downward position, the current flows through the solenoid 5OLk,
5OLl, and the electromagnetic on-off valve V6. Switch V7 to the lower position.

As a result, the oil chamber on the piston back pressure side of the lifting cylinder 14 is opened by the electromagnetic on-off valve V6. V7 communicates with the oil reservoir T via the electromagnetic control valve v5 in the neutral position, and the lifting cylinder 14 is contracted by the weight of the garbage input box 7, and the garbage input box 7 is closed.

In this case, the pressure oil from the hydraulic pump P is sent to the lifting cylinder 14.
The oil does not act on the oil reservoir T, and in addition to returning to the oil reservoir T via the electromagnetic control valve, pressure oil is replenished from the oil reservoir T to the oil chamber on the piston rod side as the lifting cylinder 14 contracts.

After the garbage input box 7 reaches the connected state with the garbage storage box 3, if the securing switch 5W16 is turned to the lower position, the electric contact LS6 is opened and the excitation of the relay R8 is cut off. Solenoid 5 via contacts r8 and r4
energize OLj. Therefore, the electromagnetic control valve v4 is switched to the lower position, and the pressure oil from the hydraulic pump P is supplied to the piston back pressure side oil chamber of the lashing cylinder +5.As a result, the lashing cylinder 15 is contracted and the lashing claw 16 is It is engaged with the U bolt 17 of the garbage input box 7 which is in the connected state.

In this way, once the vehicle returns to the running state, it is possible to start the garbage collection work again.

In addition, when the garbage input box 7 is opened, the safety switch 5W
If at least one of I2.5WI3 is switched to the lower position, a worker in the driver's seat could accidentally open/close switch 5W1.
Even if switch 1 is turned on to the closing side, current will not flow to the open/close switch 5WII, making it safe.

Then, by switching the safety switch 5W12 or 5W13, the pilot lamp PL2 located in the driver's seat
lights up to notify the operator in the driver's seat, and in response to the switching operation of the safety switch 5WI2 or 5W13, the pilot lamp PL3 or PL4 provided at the rear of the garbage storage box 3 lights up.

In addition, in the embodiment of the present invention, the garbage treatment device was composed of a rotary plate and a pushing plate, but the garbage treatment device is similar to this embodiment C.
It is not limited to ζ.

(Effects of the Invention) As described above, in the present invention, when tilting the garbage disposal box, the push plate is slightly moved back to reduce the reaction force of the garbage before releasing the binding of the garbage disposal box to the garbage storage box. Since the locking device is relaxed, no abnormal noise is generated when the locking device is released, which is safe, and since the garbage disposal box can be opened immediately afterward, the discharge operation can be carried out quickly.

[Brief explanation of the drawing]

The drawings illustrate an embodiment of the present invention, and Fig. 1 is a side view of the rear of the garbage collection vehicle, Fig. 2 is a hydraulic circuit diagram, Fig. 3 is an electric circuit diagram, and Fig. 4 is an electrical contact and each switch. It is a layout diagram. 3... Garbage storage box, 7... Garbage input box, 9... Garbage processing device, 10... Pushing plate, +1... Rotating plate, 1
2-... Push cylinder, 13... Hydraulic motor, I4
...lifting cylinder, 15...lashing cylinder, Vl,
V2. V3. V4. V5...Solenoid control valve.

Claims (1)

[Claims] A garbage storage box mounted on the vehicle body, a garbage input box tiltably connected to the rear opening of the garbage storage box via an elevating cylinder, and a garbage input box equipped inside the garbage input box and equipped with at least a push cylinder. In a garbage collection vehicle comprising a garbage processing device equipped with a push plate that can be freely swung through the garbage collection vehicle, and a lashing device that lashes the garbage input box to the garbage storage box, the lashing cylinder of the lashing device is A lashing switch that controls expansion and contraction, an electric contact that detects the forward limit position of the push plate, and an opening/closing switch that controls the lifting cylinder of the garbage disposal box are provided. A discharge control device for a garbage collection vehicle, characterized in that the pushing plate is moved back, the lashing device is then released, and the garbage input box can be tilted by operating an opening/closing switch.