JPS6347201A - Safety controller for garbage wagon - Google Patents

Abstract

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

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a safety control device for a garbage collection vehicle.

(Prior art) In general, a garbage input box equipped with a garbage processing device is attached to the rear opening of the garbage storage box so as to be tiltable, and a tailgate provided at the rear input port of the garbage official box is opened and closed. A garbage collection vehicle in which the garbage processing device is stopped is known from Japanese Patent Application Laid-Open No. 56-165603.

(Problems to be Solved by the Invention) However, the above application merely stops the garbage disposal device and the tilting of the garbage disposal device in connection with the opening/closing operation of the tailgate, but does not stop the operation of the garbage disposal device in an emergency. do not have.

The present invention utilizes an actuating plate provided at the lower edge of the inlet to prevent the input box from tilting unless the actuating plate is in the retracted state, and also processes garbage by pressing the actuating plate in the emergency operating state. The purpose of this invention is to provide a garbage collection vehicle in which the operation of the device can be stopped so that work can be carried out safely.

(Example) Embodiments of the present invention will be described below based on the drawings.

Reference numeral 1 denotes a garbage collection vehicle, in which 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 a garbage input box 7 is pivotally mounted above the rear opening 3a. is equipped with a garbage processing device 9.

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. 4). It has a stroke necessary to open the input box 7 to the garbage storage box 3.

That is, a stopper 14 is fixed to the inner wall of the garbage input box 7 with a slight margin left at the reversing point of the reversing operation of the pusher plate 10, and when the upper part of the pusher plate 10 is in contact with the stopper 14, the pusher cylinder is moved. By further reducing 12,
This is for tilting the garbage input box 7.

Furthermore, a tailgate 15 that opens and closes the input port 8 is provided on the outside of the input port 8 so as to be vertically slidable.

By the way, at the lower edge of the input port 8, an actuation plate 16 for operating a switch is rotatably supported over the entire width of the input slot 8. It can be transformed into a stored state in which it stands approximately vertically in the loading slot 8, and a working state in which it is suspended outside the loading slot 8 during implantation work.

When the actuating plate 16 is in the storage state and the working state, the garbage input box 7 has a stopper 19.2 opposite to each state.
0, and the actuating plate 16 is formed so that there is a slight gap between it and the stopper 20 when the actuating plate 16 is in the working state.

On the other hand, an abutting member 21 is fixed to the rear surface of the actuating plate 16 so as to protrude laterally, and when the actuating plate 16 rotates to the working state or the storage state, a garbage input box is placed opposite to the abutting member 21. Above and below the left side of 7 are electrical contacts LS9, which will be described later.
．． Guide members 22 and 22' for switching the LSI0 are provided.

Since the upper and lower guide members 22 and 22' are the same, only one guide member 22 will be described. Contact pieces 23 and 24 are fixed to the garbage input box 7 at intervals in the front and back, and a slidable rod 25 projects rearward and is inserted into a hole bored in the corresponding contact pieces 23 and 24. A guide piece 26 is provided in the middle of the rod 25, and when this guide piece 26 comes into contact with the electric contact LS10 (LS9), the electric contact is switched. A spring 27 is fixed to the rod 25 at a proper position, and a spring 28 is installed between the stopper 27 and the abutment piece 24 to urge the rod 25 to protrude rearward. It has become. Therefore, when the actuation plate 16 rotates to each state, the contact member 21 faces the rod 25, and when the actuation plate 16 is further pressed in this state, the rod 25 resists the biasing force of the spring 28. The electric contact LS 10 is moved forward via the guide piece 26.
(LS9).

On the other hand, a lashing cylinder 29 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 30 which is pivotally supported at the bottom of the garbage storage box 3, and is normally secured. A lashing wind 30 is engaged with a U port 31 fixed to the front surface of the garbage input box 7 via a cylinder 29, and the garbage input box 7 is secured to the garbage storage box 3.

Next, the hydraulic circuit will be explained with reference to FIG.

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 cylinders 12 for swinging the push plate 10 and tilting the garbage input box 7, and v3 is the rotation These electromagnetic control valves V1, V2 and V3 are arranged in series with the discharge pipe of the hydraulic pump P. In addition, each electromagnetic control valve Vl, V2. V
3 has spool operating solenoids 5OLC and 5OLD.
, 5OLE, 5OLF, 5OLG, and 5QLH. V4 is an electromagnetic control valve that controls the lashing cylinder 29, and has a spool operating solenoid 5OLA and Sou, J, and the electromagnetic control valve VI V9 V
7) -l + 雛inL: arrangement ffrede-mata, V5.
V6 is a '\L magnetic valve that controls the extension of the push cylinder 12, and is connected to a circuit that communicates with the rod side oil chamber of the push cylinder 12.
A solenoid SOL L is disposed close to the push cylinder 12 and operates the spool.

It has 5OLK.

Next, the electric circuit will be explained with reference to FIGS. 5 and 6. B is a power source such as a battery, BZI.

BZ2 is a buzzer, SWI is a changeover switch that selects planting work and discharge work, and SW2 is a single-acting (1-acting) switch that selects garbage loading work.
A selection switch to select whether to continue (times) or in conjunction (continuously), SW3 is an activation switch during loading work, S
W4 is a stop switch for loading work provided on the left and right sides of the garbage input box 7, SW5 is a contact switch for the buzzer BZI, and S
W6 is a reversing switch that independently operates the rotary plate 11 in reverse, SW7 is a push switch that independently operates the push plate 10 in reverse, SW8 is a reversal switch that independently operates the push plate 10 in reverse, and SW9 opens and closes the garbage input box 7. The activated open/close switch 5WIO is a dump switch that tilts and activates the garbage storage box 2.

Next, LSI is an electric contact that operates at the forward limit position of the pushing plate 10, LS2 is an electric contact that operates at the backward limit position n of the pushing plate 10, and LS3 is an electric contact that operates when the rotating plate 11 is at a predetermined angle from its lifting stop position. LS4 is an electrical contact that operates continuously while the dust storage box 3 rotates in the forward direction (clockwise in the drawing).
LS5 is an electric contact that operates when the garbage input box 7 is tilted at a predetermined angle, and LS6 is an electric contact that operates when the garbage input box 7 slightly opens with respect to the garbage storage box 3. Electrical contacts, LS7 is an electric contact that operates when a power take-off device (PTO) (not shown) is connected, LS8 is an electric contact that operates when the lashing wind 30 is in the lashing state, and LS9 is an electric contact that operates when the lashing wind 30 is in the lashing state. At some point, the electrical contact that can be actuated by the actuating plate 16, LSI0 is connected to the actuating plate 1.
6 is in the retracted state, the electric power % actuated by the actuating plate 16
It is a point of contact.

R1, R2, R3, R4, R5, R6, R7 are relays, and contacts rl, r2. r3. r4. r5゜r6. It is equipped with r7. Note that the aforementioned switch group is the selection switch S.
W 2. Operation switch SW3, stop switch SW4,
The communication switch SW5, the reverse switch SW6, the push switch SW7, and the reverse switch SW8 are arranged near the garbage input port 8 of the garbage input box 7, and the changeover switch SWI, the open/close switch SW9, and the dump switch 5WIO are installed inside the driver's seat. ing.

Next, the operation will be explained. In the push-in completed state shown in FIG. 6, the electrical contacts LSI and LS3 are switched to the lower position in FIG. 5.

Here, after lifting the tailgate 15 to open the input port 8, the operating plate 16 is suspended downward and rotated to the working state, thereby switching the electrical contact LSI0 to the position shown in FIG. S. After switching the selector switch SWI to the upper position from this state, if the implantation work is to be performed in one cycle, the selection switch SW2 is turned to the single-acting position.

Then, when the garbage is dumped into the garbage disposal box 7 from the input port 8 and the activation switch SW3 is turned on, the current flows through the relay R1.
, and its a contact rl and b contact r4-
Relay R1 is self-holding via. It also flows through the electrical contact LSI to the relay R5, and energizes the solenoid 5OLG via its a contact r5.

At this time, since the electrical contact LS3 is switched downward, a
Relay R5 is self-held via contact r5. As a result, the solenoid control valve v3 is switched to the left position, and the hydraulic motor 1
3 is activated and the rotary plate 11 starts normal rotation.

Electrical contact LS is made when the rotary plate 11 rotates through a predetermined angle.
3 returns upwards, the current flows through the electrical contacts LS3. The current flows to relay R3 via the B contact r4, and the A contact r3. It flows through electrical contact LS2 to relay R2.

Therefore, the flow flows through the a contact r3 to the solenoid 5OLG, and at the same time, the normal rotation of the rotating plate 11 is continued, and at the same time, the a contact r
2 to the solenoid 5OLF, and the solenoid control valve v2
is switched to the left position to cause the pushing cylinder 12 to perform a contraction operation, and the pushing plate 10 is moved backward (inverted).

At this time, as the push plate 10 is reversed, the electric contact LS1 is switched upward, so that the current supply to the relay R5 is cut off together with the upward switching of the electric contact LS3.

Then, when the push plate 10 reaches the retraction limit position, the electric current contact LS2 is switched to cut off the energization to the relay R2, so that the a contact r2 is opened and the excitation to the solenoid 5OLF is cut off.

Therefore, the electromagnetic control valve v2 returns to the neutral position and stops reversing the push plate 10.

However, since the relay R3 continues to be energized, the rotary plate 11 continues to rotate forward, scraping up the garbage dumped in the garbage disposal box 7 and making one rotation until it reaches the scraping stop position. Switch electrical contact LS3 downward.

As a result, the relay R3 is de-energized, so the electromagnetic control valve v3 returns to the neutral position, and the normal rotation of the rotating plate 11 is stopped. At the same time, electrical contacts LSt, LS3. The flow flows through the B contact r5 to L/-R4, which self-holds the relay R4 through the A contact r4, and flows to the solenoids 5OLE, 5QLK, and 5OLL, causing the solenoid control valve v2 to move to the right (n) and the solenoid. Switch valves V5 and V6 to their lower positions. For this reason, the push cylinder 12
is extended and the pushing plate 10 moves forward (pushing) to rotate the rotating plate 1.
The garbage above 1 will be pushed into the garbage storage box 3.

After this, when the push plate 10 reaches the forward limit position, the electric contact LSI switches downward and the current to the relay R1 is cut off, so that the a contact r1 is opened and the subsequent current flow is cut off. The electromagnetic control valve V2 is returned to the neutral position and the pushing of the pushing plate 10 is stopped.

On the other hand, if the loading operation is performed in a continuous cycle, if the selection switch SW2 is set to the interlocking position, even if the pushing operation by the pushing plate 10 is finished, the self-holding of the relay R1 will continue via the selection switch SW2. Then, the loading operation continues with the forward rotation of the rotary plate 11.

If it is desired to urgently stop the garbage disposal device 9 during the work, the actuating plate 16 can be pushed further forward.
At that time, the abutting member 21 of the actuating plate 16 slides the rod 25 forward, so that the electric contact LS is inserted through the guide piece 26.
As a result of switching 9 downward, the flow flows to relay R6 and contacts r6.
energization to relay R1 is cut off via , and garbage processing device 9 is stopped. After the emergency state is released, the actuating plate 16
When the operator releases the handle, the actuating plate 16 automatically returns to its original position and the loading operation continues M1. Note that even if either of the stop switches SW4 provided on the left and right sides of the garbage input box 7 is operated, the power supply to the relay R1 is cut off, so the garbage loading operation by the garbage processing device 9 is stopped.

When the garbage loading work at the garbage collection site is completed in this way, the actuating plate 16 is lifted and rotated to the retracted state installed upright in the garbage inlet 8, and the tailgate 15 is pulled down to allow the vehicle to move. This allows you to move to the next garbage collection site.

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 S W t to the lower position.
In addition, the opening/closing switch SW9 is placed in the upper position.

In this case, the first operating plate 16 is in the retracted state and is prevented from rotating to the working state by the tailgate 15, so the electric contact LSI0 changes downward from the state shown in FIG. The alarm buzzer BZ2 is sounded to notify the worker. When the pushing plate 10 is in the dust pushing state, the electrical contact LS2 is in the state shown in FIG. 5, so the relays R7 and R2 are in the demagnetized state.

Therefore, the current flows through switch SW9, relay contact (b contact) r7. Flows to solenoid 5QLF via r2,
Switch the solenoid valve v2 to the left position.

As a result, the pushing cylinder 12 contracts, causing the pushing plate 10 to move backward. When the push plate 10 reaches the retraction limit position, the electrical contact LS2 switches, and the electrical contacts LSI0. L.S.
Excite relay R2 through 2, relay contact (a contact)
Further, energization to solenoid 5OLF is continued via r2.

At the same time, it flows to the solenoid 5OLA via the relay contact (a contact) r2, switching the solenoid valve v4 to the lower position.

As a result, after the lashing cylinder 29 extends and removes the lashing air 30, (at this time, pressure oil flows simultaneously into the push cylinder 12 and the lashing cylinder 29, but the lashing cylinder 29 with the smaller load flows first. ), the pushing cylinder 12 continues to be compressed, and the pushing plate 10 pulls up the garbage input box 7 while being in contact with the stopper 14.

When switch 5w1o is switched to the upper position, solenoid 5OL
A current flows through C, the electromagnetic switching valve V1 is switched to the left position, the dump cylinder 4 is extended, the garbage storage box 3 is tilted, and the garbage can be discharged.

When the garbage discharge operation is completed, the garbage storage box 2 and the garbage input box 7 are returned to their original running state by performing the operation in the opposite manner to the above.

In addition, although the push plate 10 and the rotary plate 11 are used as the garbage disposal device 9 in this embodiment, the garbage disposal device 9 does not need to be limited to this type, and another type may be used.

In addition, in this embodiment, the tilting of the garbage input box 7 is controlled by the pushing plate 10.
Although this is shown to be done by the backward movement of the stopper 14
may be provided behind the push plate 10, and the input box 7 may be tilted by the forward movement of the push plate 10.

(Effects of the Invention) As described above, in the present invention, an operating plate is provided at the lower edge of the input port so as to be selectively rotatable between the storage state and the working state.
Allows the garbage bin to be tilted only when the actuating plate and tailgate are in the closed position, and can be used as an emergency stop switch when the actuating plate is in the hanging working position on the lower edge of the inlet, allowing for special operation. It can be used for multiple safety devices while performing normal work.

[Brief explanation of drawings]

The drawings illustrate an embodiment of the present invention, and FIG. 81 is a schematic side view showing a partial cross section of the rear part of the garbage collection vehicle, FIG. 2 is a partially enlarged view showing the left side of the garbage disposal box, and FIG. FIG. 4 is a hydraulic circuit diagram, FIG. 5 is an electric circuit diagram, and FIG. 6 is a layout diagram of electrical contacts and switches. 3... Garbage storage box, 7... Garbage input box, 9, Φφ garbage processing device, 10... Pushing plate, llφ... Rotating plate, 1
2 fist Φ/push cylinder, 13...Hydraulic motor, 15φ
... Tailgate, 16... Operating plate, Vl, V2
, V3, V4...Solenoid control valve, SWI~5WIO・
・・Switch, L31~LSI0-φ・Electrical contact

Claims (1)

[Claims] A garbage storage box mounted on a vehicle frame, and a garbage storage box that is tiltably connected to the rear opening of the garbage storage box, is equipped with a garbage processing device inside the garbage storage box, and has a garbage input port formed at the rear. In the garbage collection vehicle, an actuation plate for operating a switch is provided at the lower edge of the input port and is rotatable between a storage state and a working state, and an electric contact is provided opposite each state of the actuation plate. Features: Safety control device for garbage collection vehicles.