JP2558547Y2 - Garbage loading device for garbage trucks - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation control of a refuse loading device in a refuse collection vehicle.

[0002]

2. Description of the Related Art Conventionally, there is provided a refuse collection vehicle provided with a refuse loading box provided with a refuse loading device in which a refuse input box is tiltably connected to a rear opening of a refuse storage box mounted on a vehicle frame. This refuse loading apparatus selects a one-cycle stop type in which one loading operation is performed every time the operation switch is operated or a continuous operation type in which the loading operation is continuously performed. It was made to fit.

[0003] When the garbage discharged from the factory is put into the garbage collection vehicle through the shooter, the operator operates the operation switch every time a predetermined amount of garbage is put into the garbage input box of the garbage collection vehicle. By operating the refuse loading device for one cycle, the refuse is stored in the refuse storage box.

[0004]

However, in the case where the operator operates the operation switch as in the prior art,
The operator must always operate the operation switch to operate the dust loading device by always attaching to the garbage collection vehicle, and there is a problem that work efficiency is poor. In addition, the continuous operation of the dust loading device eliminates the need for the operator to operate the operation switch each time. However, the dust loading device operates continuously regardless of the amount of trash, so that the loading operation is continuously performed. There is a problem that the loading efficiency is deteriorated.

[0005]

According to the present invention, there is provided a refuse loading device for a refuse collection vehicle, wherein a refuse input box is tiltably connected to a rear opening of a refuse storage box mounted on a vehicle frame, and a refuse input box. In a dust collection vehicle provided with a dust loading device for loading the dust loaded in the dust loading box into the dust storage box, an electric circuit for controlling the operation of the dust loading device includes the dust loading box. In the continuous operation of the loading device, a delay means for performing one cycle of loading operation after a predetermined time elapses is provided, and when the start switch is turned on, the predetermined time elapses by the delay means unless the stop operation is performed. The refuse loading apparatus repeats the loading operation of one cycle every time it is performed.

[0006]

[Function] In the case of putting garbage into the garbage loading box from the garbage discharging section of the factory via the shooter, the operator simply turns on the start switch first, and thereafter the garbage loading device is provided at predetermined time intervals by the delay means. Performs the loading operation for one cycle.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a schematic configuration of a refuse collection vehicle according to the present invention.

In FIG. 1, reference numeral 10 denotes a dust storage box mounted on a vehicle frame, and a dust insertion box 20 is connected to a rear opening of the dust storage box 10 so as to be tiltable with a pivot 21. A dust loading device 30 is provided in the dust loading box 20, and the dust loaded from the loading port 22 formed in the dust loading box 20 is compressed and loaded into the dust storage box 10. .

A discharge plate 11 slidable in the front-rear direction is provided in the dust container 10, and a not-shown expansion / contraction provided between the discharge plate 11 and the front portion of the dust container 10. Due to the expansion and contraction operation of the cylinder, the discharge plate 11 is
It is made to be able to reciprocate in the front-back direction.

The garbage loading device 30 includes a slide plate 31 slidable from the upper front part to the lower rear part of the garbage input box 20, and a press plate 36 pivotally supported at the lower end of the slide plate 31. .

The slide plate 31 is formed so as to substantially fill the lateral width of the dust box 20. Guide grooves 38 are provided on the inner surfaces of both side walls of the refuse input box 20 so as to be inclined from the upper front part to the lower rear part. Both side edges of the slide plate 31 are fitted into these left and right guide grooves 38 via rollers (not shown). And
Thus, the slide plate 31 is slidable along the guide groove 38. A pivot 33 is supported on the upper surface of the slide plate 31 via a bracket 32,
Both ends of the pivot 33 project outward through a not-shown notch formed in the side wall of the dust bin 20. The rod ends of the first telescopic cylinders 35 disposed on the outer surfaces of both sides of the dust bin 20 are connected to both ends of the pivot 33, and the telescopic operation of the first telescopic cylinder 35 causes the pivot 33 to move through the notch, With this, the slide plate 31 is
Slide up and down along 8. The notch is in the same direction as the sliding direction of the slide plate 31 and
And is formed in a belt shape with a length substantially equal to the slide distance of.

The press plate 36 is provided with the slide plate 3.
1, the dust box 20 is formed so as to be substantially full in the lateral width, and the lower surface in FIG. 1 is a pressing surface. A second telescopic cylinder 37 is connected between the upper surface of the press plate 36 and the pivot 33, and the press plate 36 is configured to rotate back and forth around the pivot 36a by the telescopic operation of the second telescopic cylinder 37. ing.

Although not shown, the first telescopic cylinder 35 is connected to a hydraulic pump connected to an oil reservoir via an electromagnetic control valve. This solenoid control valve is
The hydraulic pump switches the pressure oil supplied to the first telescopic cylinder 35 to control the expansion and contraction of the first telescopic cylinder 35. Here, the solenoids SOL3 and SOL shown in FIG.
A three-position switching valve that is switched by the excitation of L4 is used. That is, the solenoid-operated switching valve is connected to the solenoid SOL
3 is switched from the neutral position to one position by being excited to retract the first telescopic cylinder 35,
When the solenoid SOL4 is excited, the position is switched from the neutral position to the other position, and the first telescopic cylinder 35 is extended.

The second telescopic cylinder 37 is also connected to a hydraulic pump connected to an oil reservoir via an electromagnetic control valve, and this electromagnetic switching valve is provided by energizing a solenoid SOL1 shown in FIG. Switching from the neutral position to one position to retract the second telescopic cylinder 37 and switching from the neutral position to the other position by excitation of the solenoid SOL2, the second telescopic cylinder 3
Extend 7

Next, an electric circuit diagram of the refuse collection vehicle according to the present invention will be described.

2 and 3 show a main part of an electric circuit of the refuse collection vehicle according to the present invention, FIG. 2 shows an upper part of the electric circuit, and FIG. 3 shows a lower part of the electric circuit.

In FIG. 2 and FIG. 3, SW1 is a first selection switch for selecting between a dust loading operation and a dust discharging operation.
W2 is a start switch of the refuse loading device, SW3 is a second selection switch for selecting one cycle stop type or continuous operation type,
SW4 and 5 are stop switches, SW6 is an ignition switch, PS is a pressure switch, and F is a fuse.

LS1 is a limit switch (electrical contact) for detecting the ascending limit position of the slide plate 31, LS2 is a limit switch for detecting the descent limit position of the slide plate 31, and LS3 is a backward rotation limit position of the press plate 36. Limit switch, LS4 is press plate 3
Reference numeral 6 denotes a limit switch for detecting a forward rotation limit position.

The limit switches LS1 and LS2 are disposed on one of the dust box 20 and the slide plate 31, and an operating member is disposed on the other. The limit switches LS1 and LS2 are connected to the respective contacts of the limit switches LS1 and LS2. It is activated by the contact of the operating member. Also, limit switches LS3,
The LS 4 is arranged on the upper surface of the slide plate 31 and is operated by an interlocking member such as a link mechanism provided to interlock with the rotation of the press plate 36.

[0021] R1 to R9, X1, X2 is a relay, these relays R1 to R9, X1, normally open, which is opened and closed controlled by X2 relay contact r _1a ~r _9a, x _1a,
x _2a , and normally closed relay contacts r _2b -r _6b , x _2b are connected.

T1 to T4 are timers having timer contacts t1 to t4, respectively.

LS5 and LS6 are limit switches provided at the lower part of the inlet 22 so as to be openable and closable to detect opening and closing of a plate (not shown), and are closed when the plate is opened. PL is an operating indicator lamp. Also,
R6 is a relay (not shown). The relay R6 is excited when the dust remaining in the dust input box 20 is scraped out at the time of discharging.

Next, the loading operation of the refuse collection vehicle thus configured will be described.

First, the loading operation in the one-cycle stop type will be described.

Here, the broken line of the press plate 36 shown in FIG. 1 indicates the state at the end of the dust filling step or at the time of dust input, and in this state, both the first and second telescopic cylinders 35 and 37 are in the state. The slide plate 31 is extended and the limit switch LS1 is operated at the upper limit position, and the press plate 36 is at the forward rotation limit position and the limit switch LS4 is operated.

In this state, the first selection switch SW1 is set as shown in FIG.
At the upper position (loading position)
The selection switch SW3 is switched to the lower position (single action position) in FIG. 2, and the start switch SW2 is pressed. As a result, the relay R1 is excited and held by itself, and as a result, the relay contact _r1a is closed, and the relay R2 is excited and held by itself to start the dust loading operation.

When the relay R2 is excited, the relay contact r
_2a is closed, and the solenoid SOL1 is excited. When the solenoid SOL1 is excited, the electromagnetic control valve is switched to cause the second telescopic cylinder 37 to retract and rotate counterclockwise about the pivot 36a in FIG. Inversion is performed up to a substantially horizontal position as shown by a solid line in FIG.

When the press plate 36 reaches the rearward rotation limit position, the limit switch LS3 is operated and the relay R
When the relay 3 is excited, the relay contact r _3b is opened and the relay R2 is demagnetized, and the relay contact r _3a is closed to excite the solenoid SOL3. The telescopic cylinder 35 is retracted.
The contraction of the first telescopic cylinder 35 causes the slide plate 31
Is lowered along the guide groove 38, and the press plate 36 connected to the guide groove 38 is also lowered while keeping the press surface of the press plate 36 in a substantially horizontal state. The garbage is crushed in between (crushing process).

When the press plate 36 reaches the lower limit position, the limit switch LS2 is operated to excite the relay R4, so that the relay contact r _4b is opened and the relay R _4b is opened.
3 relay contacts r _4a solenoid SOL2 be closed is excited with demagnetized. Thereby, the electromagnetic control valve is switched to extend the second telescopic cylinder 37. As a result, the press plate 36 rotates clockwise around the pivot 36a to a position where the press surface is substantially vertical, and presses the dust crushed in the previous process into the press plate 3.
The compression is performed between the press surface of No. 6 and the flat surface of the bottom surface of the trash receptacle 20 (compression step).

[0031] When the pressing plate 36 reaches the forward rotation limit position, the relay R4 relay contact r _5b is then opened by the relay R5 is energized by the limit switch LS4 is activated is demagnetized, the relay solenoid SOL4 is energized by contact r _5a is closed. Thereby, the electromagnetic control valve is switched, and the first telescopic cylinder 35 is extended. As a result, the first telescopic cylinder 35 is extended, the press plate 36 is raised while the press surface thereof is maintained substantially vertical, and the dust compressed in the previous process is removed from the dust storage box 10.
Packing inside (stuffing process).

During the period from the inversion end state shown in FIG. 1 to the above-mentioned crushing step, the relay R3 is excited by the operation of the limit switch LS3 for detecting the end of inversion as described above. Timer T2
Is also excited. Therefore, when the set time elapses after the slide plate 31 starts descending, the timer contact t2 closes and the relay X2 is excited. Accordingly, when the relay contact _x2a is closed and the relay R4 is energized, the relay R3 is demagnetized and the lowering of the slide plate 31 is stopped, and the process proceeds to the compression process by the press plate 36 as described above. in this way,
Even if the slide plate 31 is prevented from descending by dust and cannot reach the crushing limit position, that is, if a certain period of time elapses without switching the limit switch LS2, it is possible to shift to the next compression step. it can.

When the relay R4 is energized and shifts to the compression step, the limit switch LS3 switches to open and the relay X2 is demagnetized.
The relay contact _x2b is closed to excite the timer T1. Then, after a lapse of a predetermined time, the timer contact t1 is closed to excite the relay X1. As a result, the relay contact _x1a is closed to excite the relay R5. Therefore, since the relay R4 is demagnetized, the compression process by the press plate 36 is stopped, and the slide plate 31 is raised as described above, and the process proceeds to the packing process. As described above, even if the press plate 36 is prevented from being compressed by the dust and cannot reach the forward rotation limit position, that is, even if the limit switch LS4 is not switched, the process proceeds to the next filling step. it can.

If the input dust cannot be compressed in the compression process, the process proceeds to the filling process by the operation of the timer T1, but the press plate 36 must be rotated at least to a position close to a substantially vertical state. In such a case, it is impossible to pack the dust into the dust storage box 10.

In this case, the pressurized oil is supplied so as to extend the second telescopic cylinder 37 for a time set by the timer T1, and during this time, the pressure cannot be rotated because the press plate 36 cannot rotate due to resistance from dust. To rise. And
When the pressure reaches a certain set value, the pressure switch PS is activated and its contact is closed, so that the current from the power supply continues to energize the solenoid SOL2, and at the same time, the relay contact r _4a , the pressure switch PS and the relay energizing the solenoid SOL4 via the contact r _5b. Accordingly, the first telescopic cylinder 35 is extended and the second telescopic cylinder 37 is also extended, and the press plate 36 is raised while continuing the compression process. By raising the press plate 36, the reaction force of the dust received by the press plate 36 is reduced, whereby the pressure acting on the pressure switch PS is reduced, the contact of the pressure switch PS is opened, and the power is supplied to the solenoid SOL4. Is cut off. As a result, only the first telescopic cylinder 35 is extended, and the compression step is performed in a state where the filling step is interrupted. In other words, the press plate 36
Is slightly raised and compressed to change the location of the dust, so that the dust, which could not be completely compressed by the normal sequential operation, is rotated by the press plate 36 to a substantially vertical state. Compressed. As described above, if the press plate 36 changes its location and rotates in a substantially vertical state, the time set by the timer T1 or the limit switch L
The press plate 36 rotates until S4 operates,
Thereafter, the filling process is restarted.

Next, the loading operation in the case of the continuous operation type will be described.

The first selection switch SW1 is switched to the loading position, the second selection switch SW3 is switched to the interlocking side, and the start switch SW2 is pressed. As a result, the relay R1 is excited and held, and at the same time, the timer T4 is energized. As a result, the timer contact t4 is closed after about one second, and the relay R9 is excited. When the relay R9 is energized, the relay R8 is energized and held by itself because the relay contact _r9a is closed. At this time, the timer T3 is not energized because the relay contact _r9b is open. When one cycle of the above-described dust loading operation is completed, the limit switch LS1 is opened, so that the self-holding of the relay R1 is cut off and the dust loading operation is stopped.

At this time, the timer T4 and the relay R9 are also turned off and the timer T3 is energized. After a predetermined time (for example, about 3 minutes) has elapsed by the timer T3, the timer contact t3 is closed. As a result, the relay R1 is excited and The same garbage loading operation is performed for one cycle.

When the second selection switch SW3 is set to the interlocking position as described above, the dust loading operation is activated every time the time set by the timer T3 elapses.

Therefore, when dust is to be thrown into the dust throwing box from the dust dumping section of the factory via the chute, the operator simply turns on the start switch first and then automatically and efficiently loads the dust. Actions can be taken.

[0041]

As described above, according to the present invention, when the start switch is turned ON, the dust loading device is set to one every time a predetermined time elapses by the delay means unless the stop operation is performed.
By repeating the loading operation of the cycle, for example, when putting garbage into the garbage bin from the garbage discharge section of the factory via the shooter, the operator simply turns on the start switch first and thereafter every predetermined time Since the refuse loading device performs a one-cycle loading operation, it is possible to obtain a garbage loading standby time of a predetermined time by the delay means, compared to a case where the refuse loading device is simply operated continuously. Garbage can be fully loaded into the garbage bin and the loading operation can be performed.
Garbage discharged from the factory can be efficiently and automatically loaded into the garbage storage box of the garbage truck.

[Brief description of the drawings]

FIG. 1 is a partially cutaway side view showing a schematic configuration of a refuse collection vehicle.

FIG. 2 is an electric circuit diagram of the refuse collection vehicle according to the present invention.

FIG. 3 is an electric circuit diagram of the refuse collection vehicle according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Dust storage box 20 Dust input box 30 Dust loading device

Claims (1)

(57) [Scope of request for utility model registration] A dust input box is tiltably connected to a rear opening of a dust storage box mounted on a vehicle frame, and the dust input box receives the dust input into the dust input box. in refuse collection vehicle dust loading device is provided for loading the, wherein the electrical circuit controlling the operation of the dust loading device, this
During continuous operation of the garbage loading device, a predetermined time has passed
A delay means for performing a one-cycle loading operation later is provided, and when the start switch is turned ON, the stop operation is performed.
Unless there is a trash every time the predetermined time elapses by the above delay means
The loading device is configured to repeat one cycle of loading operation
By dust loading device refuse collection vehicles, characterized in that the.