JPS5941882B2 - Opening/closing device for garbage processing frame in garbage collection vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for safely opening and closing a garbage processing frame that serves as a rear gate for a garbage storage box in a garbage collection vehicle.

A garbage storage box used as a garbage collection vehicle, and a pushing plate hydraulically driven to open and close the rear opening of the garbage storage vehicle and to appropriately push and load the thrown garbage into the storage box.

Garbage collection vehicles are commonly used which are combined with a garbage processing frame equipped with a pushing device consisting of a rotating or swinging type scraping plate that cooperates with the garbage processing frame.

In this type of garbage collection vehicle, the hydraulic cylinder used as the operating drive source for the pushing plate of the pushing device has a stroke that exceeds the operating range of a normal pushing plate, and the pushing plate is fixed within the processing frame to operate. This structure also serves as a driving source for opening and closing the processing frame when discharging garbage from the storage box.

In conventional garbage collection vehicles, the fixed position of the pushing plate when the processing frame is opened is set at the forward limit point, that is, the time when the operation of pushing the garbage into the storage box is finished, so there is no possibility that garbage will be inside the storage box. In the full state, the pushing plate is often unable to reach its forward limit, and if you open the processing frame at this point, it will act as if the fully loaded garbage is a stopper, and if the In this case, use this biting part as a stopper to start opening the processing frame,
The processing frame may operate beyond its operating limit.

Or, in the middle of opening the processing frame, the bite is removed and the pushing plate suddenly becomes unloaded and moves shockingly, and the powerful impact generated by the movement of the processing frame that follows this spreads to various parts,
It can cause damage to the vehicle body and various equipment, and is also extremely dangerous to nearby workers.

The present invention has been invented in view of the above-mentioned points, and the opening of the processing frame with respect to the garbage storage box is fixed when the push plate is at the most retracted position, and the position is electrically confirmed. The present invention aims to provide an appropriate device that improves the safety of a garbage collection vehicle by releasing the binding relationship between the garbage collection vehicle and the processing frame and opening the processing frame.

An embodiment of the present invention will be described below with reference to the drawings.

1 is a chassis of a garbage collection vehicle, 2 is a garbage storage box mounted on the chassis, and 3 is a garbage pushing device 4 that opens and closes the rear opening of this storage box 2, inserts garbage, and pushes it into the storage box. This is an interior garbage disposal frame.

The storage box 2 is pivotally connected to the V-shape 1 through a pin 5 at its rear end base, and is appropriately dumped by a hydraulic cylinder 6.

The top of the processing frame 3 is pivotally attached to the upper part of the opening of the storage box 2 with a pin 7, so that it can be opened and closed in a flip-up manner.

The pushing device 4 is a hydraulic cylinder 8. It consists of a push plate 9, a rotary plate 10, and a hydraulic motor M for driving the rotary plate, the tip of a hydraulic cylinder 80 and a rod 12 are pivotally connected to an extension arm 11 at the base of the push plate, and the base end of the cylinder is an indicator projecting above the pin 7. The hydraulic cylinder 8 is pivotally mounted on the processing frame 3 in addition to the normal stroke required to swing the push plate 9.
with the necessary stroke to open it.

Reference numeral 14 denotes a stopper with which the extension arm 11 of the pushing plate 9 abuts and engages, and the pushing plate 9 is fixed in the processing frame 3 with a slight margin left at the backward turning point during normal operation when loading garbage. The extension arm is provided facing the front of the arm.

Reference numeral 15 denotes a securing claw for securing the processing frame 3 in a normal position, and an arm 17 whose base end is pivoted to the lower part of the storage box and protrudes from the pivot shaft 16.
A hydraulic cylinder 18 is interposed between the storage box and the lower surface of the storage box, and the claw 15 can be freely engaged with and detached from a hook 19 provided on the processing frame 3 by the operation of the hydraulic cylinder 18.

Next, the hydraulic circuit will be explained.

P is a hydraulic pump, T is an oil reservoir, vl is a switching valve for controlling the hydraulic cylinder 6 for dumping, V2 is a switching valve for controlling the hydraulic cylinder 8 for operating the push plate 9 and processing frame 3, V3 is a rotary plate These switching valves V11V2 . V3 is arranged in series with the discharge pipe of the hydraulic pump P, and each switching valve VL is arranged in series with the discharge pipe of the hydraulic pump P.
V2゜V3 has a solenoid 5OLc for valve spool operation.

5OLd, 5OLf, 5OLe, SOLg, 5OLh,
has.

V4 is a switching valve for controlling the lashing hydraulic cylinder 18, which has a solenoid 5OLa for operating a valve spool, and is arranged in parallel with the switching valve group.

Next, the electric circuit will be explained.

B is a power source such as a battery, BZ is a buzzer, SW is a changeover switch for garbage loading work and discharge work, SW2
is a selection switch that selects whether to continue the garbage loading operation once or continuously, SW3 is a switch for starting the loading operation, SW is a switch f for stopping the loading operation, S
W, is a switch for the buzzer, SW6 is a reverse switch for the rotating plate 10, SW7 is a switch for forward operation of the push plate 9, SW8 is a switch for backward operation of the push plate 9, SW9 is a switch for opening/closing the processing frame 3 5w1o is This is a damping changeover switch for the storage box 2.

Next, LSl is an electric contact that operates at the forward limit point of the pushing plate 9, and L
S2 works at the retraction limit point of the push plate 9 (electrical contact).

LS3 is an electrical contact that operates continuously while the rotary plate 10 rotates forward through a predetermined φ angle from its stop position (IJS4 is an electrical contact that operates when the garbage storage box 2 is in the normal position).

The LS lifting processing frame 3 enters the opening operation and operates at a position rotated by a predetermined angle (this is an electrical contact point).

The operation in the above configuration will be explained.

In FIG. 5, the selector switch Sw1 is in the upper position.

In addition, if loading work is performed in one cycle, select switch s
Put w2 in the lower position, put garbage into the processing frame 3, and turn on the start switch sw3.

Current flows to the solenoid SOLg, switches the switching valve 3 to the left, the hydraulic motor M operates, and the rotary plate 10 starts rotating.

When this rotary plate 10 rotates a predetermined angle, an electrical contact LS3 is made.
is switched, and current flows to solenoid 5OLf.
2 to the left position.

The electric contact LS□ is switched at the same time as the hydraulic cylinder 8 is contracted and the push plate 9 starts to retreat.

When the push plate 9 reaches the retraction limit point and switches the electric contact LS2, the current flowing through the solenoid 5OLf is cut off, the switching valve v2 becomes the neutral position, and the push plate 9 stops.

The rotary plate 10 continues to rotate, scooping up the garbage thrown into the processing frame 3, making exactly one rotation, and reaching the original stop position, switching the electric contact LS3, cutting off the current flowing to the solenoid SOLg, and turning off the control valve. When V8 is set to the neutral position and the rotation of the hydraulic motor M is stopped, the rotating plate stops rotating 100 times.

At the same time, current flows through the solenoid 5OLe, and the pushing plate 9 starts moving forward, pushing the garbage on the one-turn plate 10 into the storage box 2.

Then, the push plate 9 reaches the forward limit point and the electric contact LS
1, the energization to the solenoid 5OLe is cut off, the control valve v2 returns to the neutral position, the pushing plate 9 stops, and one cycle of the loading operation ends here.

On the other hand, for continuous cycle operation of loading operations.

The selection switch sw2 is placed in the upper position (thereby continuing the above-mentioned one cycle operation).

To stop this operation, the stop switch SW4 is turned off.

Once the garbage has been loaded into the storage box 2 as described above, it is driven to a designated treatment plant and discharged there.

For this discharge, first set the changeover switch sw1 to the lower position and switch Sw9 to the upper position, then current flows to the sononoid 5OLf, the changeover valve V2 is switched to the left position, and the hydraulic cylinder 8 is compressed and pushed. Plate 9 enters a backward movement.

In this case, when the push plate 9 reaches the retraction limit point and switches the electric contact LS2, a current flows to the sononoid 5OLa, and the switching f
Switch f4 to operate the hydraulic cylinder 18 and disengage the lashing mold 15 and the hook 19 (.

During this time, the energization of the sononoid 5OLf continues, the extension arm 1 of the pushing plate 9 comes into contact with the stopper 14, and the processing frame 3 begins an opening operation around its pivot pin 7.

After this, when the changeover switch 5w1o is switched to the upper position,
Since the electric contact LS5 is switched while the processing frame 3 is being opened, a current flows through the solenoid 5OLc and the switching valve v1 is switched to the left position, and the hydraulic cylinder 6 is extended to dump the storage box 2 and remove the garbage. Discharge.

As explained above, the present invention pivots a processing frame equipped with a pushing device to the rear opening of a garbage storage box of a garbage collection vehicle so as to be openable and closable, and a hydraulic cylinder for operating the pushing plate of the pushing device is used to open and close the processing frame. In the case where the push plate is used for both purposes, the processing frame is opened and closed with the push plate fixed at the retreat limit point away from the garbage in the storage box, so the fixing position of the push plate is independent of the amount of garbage in the storage box. This prevents operation in an unstable state, and when the push plate reaches its retreat limit, this is electrically confirmed and the binding between the storage box and the processing frame is automatically released, which prevents operational errors. This improves work safety as there are no problems caused by this, and the vehicle itself is not subject to shocks or breakdowns, making it even more reliable.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a schematic rear side view of a garbage collection vehicle, Fig. 2 is a hydraulic circuit diagram, Fig. 3 is an electrical circuit diagram, and Fig. 4 is a diagram of the arrangement of main electrical contacts. . 1... Chassis, 2... Garbage storage box,
3... Garbage processing frame, 4... Garbage pushing device, 5... Pin, 6... Hydraulic cylinder, 7... Pin, 8... Hydraulic cylinder, 9... Pushing plate, 10... Rotating plate,
11... Extension arm, 12... Rod, 1
3... Claw stand, 14... Stroller 11
5... Fixed type, 16... Axis. 17... Arm, 18... Hydraulic cylinder, 19... Hanging fixture, P... Hydraulic pump, T... Oil reservoir, v 1, v
2, v3, v4----All changeover valve 1M...
・Hydraulic motor, 5OLcySOLd, 5OLf, S
OLetSOLg, 5OLh・・・Sononoid,
B...Battery, BZ...Buzzer,
5w1-5wH8...Switch. LS1~LS,... Electrical contacts.

Claims (1)

[Scope of Claims] 1. A garbage processing frame equipped with a garbage pushing device is rotatably attached to the rear upper part of the garbage storage box, and the processing frame is moved against the storage box using the pushing plate operating cylinder of the pushing device. In a garbage collection vehicle that can be opened and closed. An electrical contact is provided to detect the retraction limit point of the pushing plate, and the opening of the processing frame with respect to the storage box is started by retracting the pushing plate by the contraction operation of the pushing plate actuating cylinder, and when the pushing plate reaches the retracting limit point, the pushing plate is closed. An opening/closing device for a garbage processing frame in a garbage collection vehicle, characterized in that the lashing device between the storage box and the processing frame is released by the actuation of the electric contact. 2. Claim 1, characterized in that a stopper is provided at the retraction limit point of the pushing plate to abut and fix the pushing plate.
An opening/closing device for a garbage processing frame in a garbage collection vehicle as described in 2. 3. The opening/closing device for a garbage processing frame according to claim 1, further comprising a lashing device interlocked with the expansion and contraction operation of the lashing cylinder provided between the storage box and the processing frame.