JPH0567523B2 - - 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 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.

There is also known a device in which a push plate is provided in the garbage processing device, and the garbage input box can be opened and closed using a push cylinder that swings the push plate (see Japanese Patent Publication No. 59-41882). .

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.

(Problem to be Solved by the Invention) In the former type of garbage collection vehicle, when the garbage input box is opened to discharge the garbage, the work starts from the retreat of the push plate, resulting in a reaction force acting on the lashing device. In addition to being removed, there is no jamming caused by the pushing plate, and the ejecting operation can be carried out safely.However, there is a waiting time until the pushing plate reaches the retraction limit position, and the ejecting operation cannot be carried out quickly. be.

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 trash, the pressure suddenly drops, causing an abnormal noise.
There is a problem in that it gives workers a sense of anxiety.

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 problem) The present invention includes a garbage storage box mounted on a vehicle body,
A garbage disposal box is openably connected to the publication opening of the garbage storage box via an elevating cylinder, and the interior of the garbage disposal box is oscillated between a forward limit position and a backward limit position via at least a push cylinder. The garbage disposal device is equipped with a push plate that is configured to move the garbage, and is further provided with an electric contact LS1 that detects the forward limit position, and a solenoid SOLa that operates a lashing device that lashes the garbage input box to the garbage storage box.
and a lashing switch SW16 for operating the garbage collection vehicle, the lashing release electric circuit connecting the lashing switch SW16 for releasing the lashing of the garbage input box and the solenoid SOLa,
While connecting via the b contact of the electrical contact LS1, the lashing switch SW16 is connected to the electrical contact LS.
The circuit up to the b contact of No. 1 and the electric circuit for retracting the pushing plate connected to the solenoid SOLf are connected to the electric contact LS1.
Connect through the A contact of the lashing switch SW
16 to the lashing release side, the push plate moves back a little and then the lashing is released, and the garbage input box can then be opened.

(Function) When the lashing switch is operated to the release side when discharging garbage, 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 is stopped. The cylinder extends and the lashing pawl separates from the U-bolt.

When the lashing claw is separated from the U-bolt, the operator operates the opening/closing switch to open the garbage input box to the garbage storage box.

That is, since the push plate moves back a little and the lashing is released, the garbage disposal box can be opened immediately thereafter.

(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 the vehicle body 2.
The garbage storage box 3 is equipped with a dump cylinder 4 installed between the vehicle body 2 and the garbage storage box 3.
It can be tilted appropriately around the 5 pivot parts.

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 push plate 10, a rotary plate 11, a push cylinder 12 which is a hydraulic actuator for driving them, and a hydraulic motor 13.
(See Fig. 2), and the garbage dumped in the storage section 18 of the garbage input box 7 is loaded into the garbage storage box 3 by the cooperative action of the pushing plate 10 and the rotary plate 11, as is conventionally known. .

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 claw 16 pivotally supported at the bottom of the garbage storage box 3, and is normally secured. Lashing claw 1 via cylinder 15
6 is engaged with a U-bolt 17 fixed to the front surface of the garbage input box 7, thereby securing the garbage input box 7 to the garbage storage box 3.

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 that controls dump cylinder 4, V2
is an electromagnetic control valve that controls the push cylinder 12, V3
is an electromagnetic control valve that controls the hydraulic motor 13, V4 is an electromagnetic control valve that controls the lashing cylinder 15, and V5 is an electromagnetic control valve that controls the lifting cylinder 14.
These electromagnetic control valves V1, V2, V3, V4, V
5 is the spool operating solenoid SOLc, SOLd,
SOLe，SOLf，SOLg，SOLh，SOLa，SOLj，
Equipped with SOLm.

And the electromagnetic control valves V1, V2, V3, V
4, V5, the above-mentioned electromagnetic control valves V2, V4,
V5 is arranged in parallel to the discharge pipe of the hydraulic pump P, while the solenoid control valves V1 and V3 are arranged in parallel to the solenoid control valve V2, and the solenoid control valve group V2, V4, V5 and the solenoid control valve Groups V1 and V3 are arranged in series.

Further, V6 and V7 are electromagnetic on-off valves normally energized to a position that prevents contraction of the lifting cylinder 14 and allows expansion of the lifting cylinder 14, and are equipped with spool operating solenoids SOLk and SOLl.

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

B is a power source such as a battery, SW1 is a selection switch to select loading work or unloading work, SW1
0 is a dump switch that tilts the garbage storage box 2;
SW11 is an open/close switch that opens and closes the garbage input box 7, SW12 and SW13 are safety switches that disable the discharge operation from the driver's seat, and SW16 is a lashing switch that releases the lashing claw 16 mentioned above.

Among these switch groups, selection switch SW
1. Open/close switch SW11 and dump switch
SW10 is located inside the driver's seat and is a safety switch.
SW12, SW13 and lashing switch SW16 are provided at the rear of the garbage storage box 3.

Further, LS1 is an electric contact that detects the forward limit position of the pushing plate 10, and is connected to the lashing release electric circuit that connects the lashing switch SW16 and the solenoid SOLa through the b contact of the electric contact LS1. , electrical contact from lashing switch SW16
The circuit up to the b contact of LS1 and the electric circuit for retracting the pushing plate of the solenoid SOLf for retracting the pushing plate are connected via the a contact of electric contact LS1.

Next, LS4 is an electric contact that operates when the garbage storage box 3 is in the traveling position, LS5 is an electric contact that operates when the garbage input box 7 is tilted at a predetermined angle,
LS6 is an electric contact that is activated when the garbage input box 7 is opened, and LS7 is an electric contact that is activated when a power take-off device (not shown) is operated.

Further, R7 and R8 are relays, and are provided with contacts r7 and r8.

Furthermore, PL2, PL3, and PL4 are pilot lamps, which are designed to turn on when safety switches SW12 and SW13 are switched and activated. Pilot lamps PL2 and PL3 and PL4 are respectively placed at the driver's seat and at the rear of the garbage storage box 3. ing.

Next, to explain the operation, first, when the power take-off device (not shown) is operated, the electric contact LS7
is closed, energizing relay R7. Excitation of relay R7 continues energizing the subsequent circuits via its a contact r7.

Here, after switching the selection switch SW1 to the upper position, dumping the garbage from the input port 8 of the garbage input box 7 and operating the start switch (not shown),
Although not explained in detail, the garbage processing device 9 consisting of a pushing plate 10 and a rotary plate 15 operates as appropriate to push 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, the selection switch SW1 is first switched downward, and then the lashing switch SW16 is switched upward.

As a result, the current flows through selection switch SW1, safety switches S12, SW13, lashing switch SW16,
Solenoid via electrical contact LS1 and b contact r2
The current flows to SOLf and switches the solenoid control valve V2 upward. Then, the pressure oil from the hydraulic pump P flows into the piston rod side oil chamber of the pushing cylinder 12, and the piston back pressure side oil chamber communicates with the oil reservoir T, so that the pushing cylinder 12 contracts.

As the push cylinder 12 is contracted, the push plate 10 moves back, and at the same time the electric contact LS1 switches, so the current from the lashing switch SW16 cuts off the current to the solenoid SOLf and flows to the solenoid SOLa via the electric contact LS1. .

Therefore, as a result of switching the electromagnetic control valve V2 to the neutral position and simultaneously switching the electromagnetic control valve V4 upward, the pressure oil from the hydraulic pump P is transferred to the lashing cylinder 1.
When the pressure reaches a certain level or higher, the piston rod side oil chamber communicates with the oil reservoir T via the pilot check valve, the lashing cylinder 15 extends, and the lashing claw 16
Rotate clockwise and remove from U bolt 17.

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

Since the pushing plate 10 is moved slightly backward before the lashing cylinder 15 is extended, the pressure of the debris acting on the pushing plate 10 is reduced, and the burden on the lashing cylinder 15 is reduced.

After this, when the on-off switch SW11 is switched upward, current flows through the solenoid SOLm, and the electromagnetic control valve V5 is switched upward.

Then, the pressure oil is supplied to the oil chamber on the piston back pressure side of the lifting cylinder 14 through the electromagnetic on-off valves V6 and V7, and as a result, the lifting cylinder 14 is extended. be open to

Then, when the garbage input box 7 is opened at a certain angle, the electric contact LS5 switches, so when the dump switch SW10 is then switched upward, current flows to the solenoid SOLc, the electromagnetic control valve V1 is switched upward, and the dump cylinder 4 is extended to tilt the garbage storage box 2 and discharge the garbage.

After the garbage has been discharged, turn on the dump switch SW.
10 is switched downward, the solenoid SOLd is energized, and the electromagnetic control valve V1 is switched downward, so that the dump cylinder 4 is reduced and the garbage storage box 3
to lie down.

When the garbage storage box 3 returns to the running position, the electrical contact
Since LS4 is switched and operated, when the on-off switch SW11 is then operated to switch downward, current flows through the solenoids SOLk and SOLl, switching the electromagnetic on-off valves V6 and V7 downward.

As a result, the piston back pressure side oil chamber of the lifting cylinder 14 communicates with the oil reservoir T via the electromagnetic on-off valves V6, V7 and the electromagnetic control valve V5 in the neutral position.
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 does not act on the lifting cylinder 14, but returns to the oil reservoir T via the electromagnetic control valve. Pressure oil is supplied to the oil chamber.

After the garbage input box 7 reaches the connected state with the garbage storage box 3, if the lashing switch SW16 is switched downward, the electric contact LS6 is opened, and since the excitation of the relay R8 is cut off, its b contact r8,
The solenoid SOLj is energized via r4.

Therefore, the electromagnetic control valve V4 is switched downward, and the pressure oil from the hydraulic pump P is transferred to the lashing cylinder 15.
As a result, the lashing cylinder 15 is contracted and the lashing claw 16 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.

Note that when the garbage disposal box 7 is opened, if at least one of the safety switches SW12 and SW13 is switched to the downward position, even if a worker in the driver's seat accidentally turns the open/close switch SW11 to the closed side, the current will not flow. It is safe because it does not flow to the on/off switch SW11.

And safety switch SW12 or SW1
3, the pilot lamp PL2 located in the driver's seat will light up and notify the operator in the driver's seat, as well as the safety switch SW12 or
In response to the switching operation of SW13, 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 is constructed of a rotating plate and a pushing plate, but the garbage treatment device is not limited to this embodiment.

(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 lashing device is released, it does not make any abnormal noise and is safe, and since the garbage disposal box can be opened immediately after this, it is necessary to completely retract the push plate before proceeding. Discharging work can be done more quickly than when the process cannot be started.

[Brief explanation of drawings]

The drawings illustrate embodiments of the invention.
The figure is a side view of the rear of the garbage collection vehicle, Figure 2 is a hydraulic circuit diagram, Figure 3 is an electrical circuit diagram, and Figure 4 is a layout diagram of electrical contacts and switches. 3... Garbage storage box, 7... Garbage input box, 9...
Dust processing device, 10... Pushing plate, 11... Rotating plate, 12... Pushing cylinder, 13... Hydraulic motor, 14... Lifting cylinder, 15... Lagging cylinder, V1, V2, V3, V4, V5 ...Solenoid control valve.

Claims (1)

[Claims] 1. A garbage storage box mounted on the vehicle body, a garbage input box connected to the rear opening of the garbage storage box so as to be openable via an elevating cylinder, and a garbage input box connected to the rear opening of the garbage storage box via at least a push cylinder. A garbage disposal device is equipped with a push plate that swings between a forward limit position and a backward limit position, and is further provided with an electric contact LS1 for detecting the forward limit position, and connects the garbage input box to a garbage storage box. In a garbage collection vehicle equipped with a solenoid SOLa that operates a lashing device for lashing the garbage disposal box, and a lashing switch SW16 that operates the lashing switch SW16, the lashing switch SW16 and the solenoid that release the lashing of the garbage input box are provided.
It is connected to the lashing release electric circuit that connects the lashing switch SW16 to the b contact of the electric contact LS1 through the b contact of the electric contact LS1, and the push-in button that connects the circuit from the lashing switch SW16 to the b contact of the electric contact LS1 and the solenoid SOLf. Connect the electrical circuit for board retraction to electrical contact LS1 a.
Connected through the contact, the lashing switch SW16
A discharge control device for a garbage collection vehicle, characterized in that by operating the push plate to the lashing release side, the lashing is released after the push plate is moved back a little, and then the garbage input box can be opened.