JPH0431963B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention compresses and crushes the garbage thrown into a garbage input box (hereinafter referred to as the input box) and pushes it into the garbage storage box (hereinafter referred to as the storage box). A garbage loading device is provided in the input box, and the input box provided in connection with the rear opening of the storage box is tilted upward, and the garbage stored in the storage box is discharged from the storage box by the garbage loading device. This is related to garbage collection vehicles.

[Conventional technology]

As a conventional device of this type, the applicant has previously developed
The base end of the link is pivotally supported above the garbage inlet of the input box connected to the rear opening of the storage box, the tip of the link is pivotally supported above the packer plate, and the base of the press plate is attached to the lower end of the packer plate. The base end of a press cylinder whose ends are rotatably connected and a rod is pivotally supported in the center of the press plate is rotatably connected to a point on the link that is displaced from the connecting axis between the link and the packer plate. The present invention also proposes a garbage loading device for a garbage collection vehicle, characterized in that a rod of a packer cylinder whose base end is pivotally supported below the input box is connected to a connecting shaft between the packer plate and the link.

In the proposed garbage loading device, in the first step when loading garbage into the dumping box, the rod of the press cylinder and the rod of the packer cylinder are both changed from the fully extended state to the most contracted state. . Then, in the second step of compressing and crushing the garbage thrown into the dumping box, the rod of the packer cylinder is brought into a state of being minimized and the rod of the press cylinder being slightly expanded from the final state of the first step. Thereafter, in the third step of further compressing and crushing the garbage in the input box, the rod of the press cylinder is brought into a state of maximum extension from the final state of the second step. Finally, in the fourth step of scraping up the compressed and crushed garbage in the input box toward the opening of the storage box, the rod of the packing cylinder is brought into the fully extended state from the final state of the third step. The garbage placed in the input box is compressed and crushed and pushed into the storage box.

By the way, this garbage loading device compresses and crushes the garbage by rotating the press plate as the press cylinder operates, and the base end of the press cylinder is attached to a link to adjust the rotation angle of the press plate when pushing it into the storage box. , the amount of garbage that can be accommodated can be greatly increased, making it highly effective.

On the other hand, when discharging the garbage that has been pushed into the storage box, first release the lock on the input box that is provided at the rear opening of the storage box so that it can be opened and closed.
Thereafter, the input box is rotated upward and the discharge plate inside the storage box is moved rearward to discharge the garbage out of the storage box.

[Problem that the invention seeks to solve]

However, in the above-mentioned garbage loading device,
If the dust discharge operation is performed when both the padsuka cylinder and press cylinder rods are in the fully extended state, the dust that has been thrown into the input box but not yet pushed into the collection box and remains in the input box will rise. There was a problem in that the garbage was not discharged from the garbage disposal box and remained there even after the garbage discharge operation was completed.

Therefore, the present invention has been made to solve the above-mentioned conventional problems, and its purpose is to prevent the packing cylinder and the press from collapsing when the input box is rotated and raised during the garbage discharge operation. To provide a garbage collection vehicle in which both rods of a cylinder are in the most extended state and even if the garbage remains inside the raised charging box, it can be surely discharged outside the charging box.

[Means for solving problems]

In order to achieve the above object, a garbage collection vehicle made according to the present invention includes a packer plate 6 whose upper end is swingably supported and whose lower end is guided to move on a predetermined track 17, and a packer plate 6 whose upper end is attached to the lower end of the packer plate 6. The press plate 5 is rotatably supported, the packer cylinder 13 moves the packer plate 6 up and down by the expansion and contraction of the rod 13a, and the rod 15
It is equipped with a press cylinder 15 that rotates the press plate 5 with respect to the packing plate 6 by the expansion and contraction of a, and moves the free end downward and upward. In the first step, the rod 15a of the press cylinder 15 and the rod 13 of the packer cylinder 13 are
In the second step, the rods 15a of the press cylinder 15 are brought into the most contracted state from the state in which both rods a are fully extended, and the garbage thrown into the garbage input box 2 is compressed and crushed. In the third step, the rod 13a of the packing cylinder 13 is minimized and the rod 15a of the press cylinder 15 is slightly expanded, and the garbage is further compressed and crushed in the garbage input box 2, from the final state of the second step. In the fourth step, the rod 15a of the press cylinder 15 is fully extended, and the compressed and crushed garbage in the garbage input box 2 is scraped up toward the opening 1a of the garbage storage box 1. In a garbage collection vehicle, a garbage charging box 2 is provided in an opening 1a of a garbage storage box 1 so as to be tiltable and upward, which has a garbage loading device that allows the rod 13a of the packing cylinder 13 to be in the most extended state from the final state. First and second detection means LS-2B and LS-4 detect the most extended and most contracted states of the rod 15a of the press cylinder 15, respectively, and the most extended and most contracted states of the rod 13a of the packer cylinder 13, respectively. Third and fourth detection means LS to detect
-1, LS-3, and a fifth detection means LS-10 for detecting the rise of the garbage disposal box 2 to a predetermined position.
LS-10B, manual switch means SW-4 for operating into the first and second states, and the fifth
In response to the operation of the manual switch means SW-4 to the first state when the detection means LS-10 and LS-10B are detecting the rise of the garbage disposal box 2 to the predetermined position, 1 and 3rd detection means LS
-2B, LS-1 detects the maximum extension state of the rods 15a, 13a of the press cylinder 15 and the snapper cylinder 13, respectively.
Means CR-12, CR-2 forming a circuit for simultaneous extension operations of 5a, 13a and the fifth detection means LS-10, LS-10B prevent the garbage input box 2 from rising to a predetermined position. In response to the operation of the manual switch means SW-4 to the second state during detection, the second and fourth detection means LS-1,
Both the rods 15a, 13a of the press cylinder 15 and the packer cylinder 13 are pressed until the LS-3 detects the minimum contraction of the rods 15a, 13a of the press cylinder 15 and the packer cylinder 13, respectively.
Means for forming a circuit that performs simultaneous reduction operations of
CR-13, CR-1 and the cylinders 15, 13
includes solenoid valves V-1 and V-2 that switch the hydraulic pressure path so that the hydraulic pressure to the press cylinder 13 is supplied by the discharged oil of the press cylinder 15 during the simultaneous operation of It is characterized in that the amount of oil is smaller than that of the packing cylinder 13.

[Effect]

With the above configuration, the fifth detection means LS-10,
When the LS-10B detects that the garbage disposal box 2 has risen to a predetermined position, the manual switch means SW-4
When the is operated to the first state, the first and third detection means LS-2B and LS-4 detect the maximum extension state of the rods 15a and 13a of the press cylinder 15 and the packer cylinder 13, respectively. Press cylinder 15 and Patsuka cylinder 1 until
It is possible to simultaneously extend both the three rods 15a and 13a. Further, the fifth detection means LS
-10, When the LS-10B detects the rise of the garbage disposal box 2 to the predetermined position, the manual switch means
When SW-4 is operated to the second state, the second and fourth detection means LS-1, LS-3 are activated accordingly.
Simultaneous contraction of both the rods 15a, 13a of the press cylinder 15 and the packer cylinder 13 is performed until the rods 15a, 13a of the press cylinder 15 and packer cylinder 13 are respectively detected to be at their minimum contraction. Therefore, the garbage remaining in the input box 2 can be scraped out by the press plate 5 and discharged to the outside of the input box 2.

Moreover, the amount of oil required to extend the press cylinder 15 is smaller than that of the press cylinder 13, and the hydraulic pressure to the press cylinder 13 when both cylinders 15 and 13 are operated simultaneously is supplied by the oil discharged from the press cylinder 15. , when both cylinders 15 and 13 are simultaneously minimized, the arc locus drawn by the tip of press plate 5 is small, and when both cylinders 15 and 13 are simultaneously minimized, press cylinder 15 completes its contraction before Patsuka cylinder 13. As a result, the arc locus drawn by the tip of the press plate 5 becomes smaller, and when both cylinders 15 and 13 simultaneously reach the maximum extension, the extension of the press cylinder 15 is completed before the pad cylinder 13, and the arc drawn by the tip of the press plate 5 becomes smaller. The trajectory becomes larger, and the tip of the press plate 5 follows a trajectory closer to the inner surface of the input box 2 during scraping, so that garbage can be effectively discharged.

〔Example〕

Embodiments of the apparatus according to the present invention will be described below based on the drawings, in which the same members are denoted by the same reference numerals.

FIG. 1 shows a garbage collection vehicle according to the present invention, in which a storage box 1 is mounted on a chassis a of the garbage collection vehicle A.
A charging box 2 is connected to the rear opening of the storage box 1, and a mechanical part of the garbage loading device as shown in FIGS. 2 to 5 is housed within the charging box 2.

In the figure, the input box 2 is tiltably connected to the rear part of the storage box 1 by a pin 3, and is normally locked in the illustrated state by an automatic locking device 54 so as to communicate with the rear opening 1a of the storage box 1. is maintained.

The input box 2 also has a garbage input port 2a at the rear.
is provided, and has a bottom portion 2b in which circular arc surfaces 2b ₁ and 2b ₂ are continuously formed, and inside the input box 2 is a mechanical part of a garbage loading device that compresses and crushes the garbage and pushes it into the storage box 1. It is stored.

Further, in FIG. 2, reference numeral 5 denotes a press plate having a width that touches the inner surfaces of both side walls of the input box 2. A flat plate is attached to the upper end of the plate 5, and the lower end of a press plate 6 having the same width as the press plate 5 is attached to the shaft. 7, they are rotatably connected to each other.

The upper and lower ends of the packer plate 6 are connected to a pair of first links 8 and a pair of second links whose base ends are pivotally supported on the inner surfaces of both side walls of the input box 2 above the input opening 2a and spaced apart vertically. Tip of link 9 and shaft 1
A pack cylinder 13 is rotatably connected to the shaft 10 by 0 and 11, and its base end is rotatably supported by a shaft 12 provided below the input box 2.
The tip of the rod 13a is rotatably connected.

Further, the first link 8 has a patch plate 6.
The base end of a press cylinder 15 is swingably connected to a shaft 14 provided through displacement with a connecting shaft 10, and the tip of a rod 15a of the cylinder 15 connects to a shaft 16 provided in the center of the press plate 5. is rotatably connected to.

17 is a guide rail for a roller (not shown) provided on the connecting shaft 7 between the press plate 5 and the packing plate 6; 18 is a guide rail for a roller (not shown);
This is a shielding plate that shields the upper part of the

Therefore, the base end shaft fulcrum of each of the first and second links 8 and 9 connecting the upper and lower parts of the above-mentioned Patchka plate 6 is as follows.
The front surface of the cover plate 6 is configured to be movable while maintaining a constant gap from the lower end of the shielding plate 18.

Next, the operation process of the mechanical part of the garbage loading device will be explained with reference to FIGS. 2 to 5.

In the first step of inputting garbage into the input box 2 from the input port 2a, the rod 15a of the press cylinder 15 and the rod 13a of the packer cylinder 13 are both in the fully extended state as shown in FIG. 3, as shown in FIG. As shown, the rod 15a of the press cylinder 15 is in the most contracted state, and the rod 13a of the packer cylinder 13 is in the most extended state, and at the end of this stroke, the press plate 5 is held in a substantially horizontal state, and the packer plate 6 is in the most extended state. It is held in the highest position.

Next, in the second step for compressing and crushing the input garbage, as shown in FIGS. 3 and 4, when the packer cylinder 13 is operated to reduce the rod 13a, the packer plate 6 is moved to the first and second stages. The counterclockwise rotation of the links 8 and 9 of 2 causes the press plate 5 to descend along the guide rail 17, and the press plate 5 also descends in a substantially horizontal state, so as to enclose the garbage between it and the bottom 2b of the input box 2. At this time, the rod 13 of the packing cylinder 13
In the semi-reduced state of a, the press cylinder 15 is operated to slightly extend the rod 15a.

Next, in the third step for further compressing and crushing the garbage in the input box 2, as shown in FIGS. 4 and 5, when the rod 15a of the press cylinder 15 is brought to the maximum extension state, the press plate 5 is moved to the compressor plate. It rotates clockwise around a connecting shaft 7 with 6.

Therefore, the tip edge of the press plate 5 rotates while slidingly contacting the bottom arcuate surface _2b1 of the input box 2, compressing and crushing the garbage between the press plate 5 and the arcuate surface _2b2 .

In the subsequent fourth stroke, after the rod 15a of the press cylinder 15 reaches the maximum extension state, the locking cylinder 13 is operated to extend the rod 13a, and the locking plate 6 moves the first and second links 8 and 9 in the clockwise direction. The rotation moves it upward along the guide rail 17.

Therefore, the leading edge of the press plate 5 rises while slidingly contacting the bottom arcuate surface _2b2 of the input box 2, and scrapes up the compressed and crushed garbage toward the opening 1a. At the end of this fourth stroke, the rod 13a of the packer cylinder 13 is at its maximum extension as shown in FIG. 2, and the press plate 5 pushes the garbage into the storage box 1, closing the opening 1a.

In this state, the collection vehicle travels, and at the next collection location, the press cylinder 15 is operated to bring the rod 15a to the minimum contracted state, and the press plate 5 is
is raised to a substantially horizontal position, and garbage is loaded again through each of the above steps.

Returning to FIG. 1 again, when discharging garbage from the storage box 1 which is full of garbage loaded by the mechanical part of the garbage loading device stored in the input box 2, First, the loading box 2 is tilted upward about the shaft 3. For this purpose, a rod 51a of a lift cylinder 51 whose base end is rotatably supported on the storage box 1 is rotatably connected to the loading box 2. . Further, in order to discharge the garbage in the storage box 1 while the input box 2 is raised, a discharge plate 53 driven by a discharge cylinder 52 is housed in the storage box 1.

Note that before the input box 2 is raised as described above, the input box 2 and the storage box 1 are completely tightened and held in the state shown in the figure by the automatic locking device 54 driven by the cylinder 73 (described later). Therefore, it is necessary to release the tightening by the automatic locking device 54 in order to raise the lock.

On the other hand, inside the driver's cab b, there is a power take-off (PTO) switching handle 55 and a switch panel 56.
and is provided. The switch panel 56 includes a power changeover switch, a loading box operation switch, a discharge plate operation switch, an individual operation switch, and the like. Then, on the left side of the input box 2, there is a "load" button,
A loading operation panel 57 having a "stop" push button and a "buzzer" push button is mounted on the right side (not visible in FIG. 1), and an operation panel consisting of an "emergency stop" push button is mounted on the right side (not visible in FIG. 1).

FIG. 6 shows the hydraulic circuit of the garbage collection vehicle according to the present invention, and in the figure, 61 is the garbage collection vehicle A (FIG. 1).
, 62 is a PTO device connected and disconnected by PTO switching handle 55, 63 is a gear pump,
64 is an oil tank, 65 is a suction filter, 66a, 66b are in-line check valves, 67a, 67b are pilot operator check valves, and 68a, 68b are tightening check valves. V-1 to V-7 are solenoid valves, 71a and 71b are relief valves, 72 is a return filter, and 73 is the automatic locking device 54.
It is a tightening cylinder that operates. gear pump 63
The hydraulic pressure generated by the operation of the solenoid valves V-1 to V-7 is applied to the cylinders 13, 15, 51,
52 and 73 to operate these cylinders.

In addition, solenoid valve V-1 is a solenoid
Has SOL-4 and SOL-5, solenoid SOL
By energizing SOL-4 and SOL-5, hydraulic pressure is supplied to the packer cylinder 13 to extend and contract the rod 13a, respectively. The solenoid valve V-2 has solenoids SOL-2 and SOL-3, and when the solenoids SOL-2 and SOL-3 are energized, hydraulic pressure is supplied to the press cylinder 15 to press the rod 15.
Shrink and expand a, respectively. Solenoid valve V-3 is solenoid SOL-9 and SOL-10
By energizing the discharge plate discharge solenoid SOL-9 and the discharge plate return solenoid SOL-10, hydraulic pressure is supplied to the discharge cylinder 52 to extend and contract the rod, respectively. Solenoid valve V-
4 has solenoids SOL-7 and SOL-8,
By energizing the solenoids SOL-7 and SOL-8, hydraulic pressure is supplied to the lift cylinder 51 to extend and contract the rod, respectively. The solenoid valve V-5 has a lock tightening/opening solenoid SOL-11, and before the solenoid SOL-11 is energized, the lock cylinder 73 rod is contracted and the automatic locking device 54 that maintains the tightened state is tightened by the solenoid. Lock cylinder 7 is locked by energizing SOL-11.
Extend and release the rod in step 3. The solenoid valve V-6 has a solenoid SOL-6, and when the solenoid SOL-6 is energized, the Patsuka cylinder 1
A part of the hydraulic pressure supplied to press cylinder 1 is transferred to press cylinder 1.
5 and extend the rod 15a. Solenoid V-7 is solenoid SOL-12 and SOL
-13, and when the solenoid SOL-12 is energized, hydraulic pressure supplied through the solenoid valve V-3 is supplied to the discharge cylinder 52 to extend the rod. On the other hand, it is switched by energizing the solenoid SOL-13, and acts to release the hydraulic pressure inside the cylinder 52, which increases due to the force applied to the rod of the discharge cylinder 52 from the outside to reduce the rod, through the relief valve 71b.

FIG. 7 shows the electric circuit of the garbage collection vehicle according to the present invention, and in the figure, LS-1 to LS-13 are micro switches provided at various locations in the garbage collection vehicle A. The micro switches LS-1, LS-2A, and LS-2B are connected to the switch plate 6 as shown in Figures 8 and 9.
The micro switch LS
Micro switch LS-2A,
LS-2B is used to detect the elongation of the press cylinder 15 when loading garbage.

Micro switches LS-3 to LS-5 are in input box 2
The micro switch LS-5 is attached to the left side of the press cylinder 15, rotates in conjunction with the second link 9 supporting the press cylinder 6, and is switched by an operating cam 83. In order to detect the position where the rod 15a of the packer cylinder 13 starts to extend, the micro switch LS-4 switches the rod 1 of the packer cylinder 13 when loading garbage and when raising the loading box.
In order to detect the elongation of the rod 13a, the micro switch LS-3 is
are used to detect the shrinkage of .

The micro switch LS-7 is provided in the storage box 1, and when the input box 2 is lowered and raised, one contact is turned on and the other is turned off at the return position of the discharge plate 53. Micro switch LS-10, LS-
10B and LS-11 are attached to the hinges of storage box 1 and input box 2, and when the discharge plate 53 is activated, LS-10 and LS-10B are turned on when input box 2 is at an upward angle of 45° or more, and the angle is changed. Check and make the discharge plate 53 operable.
LS-11 is turned off when the input box 2 is lowered, and is used to operate the automatic locking device 54. Micro switch LS-13 is PTO
It is provided at the switching handle 55 and is used to turn on the power when the PTO device 62 is connected.

PB-1 to PB-4 are push button switches, which are operated by push buttons for "emergency stop", "stop", "loading" and "buzzer", respectively.
SW-1 to SW-4 are three-position toggle switches, which respectively correspond to the power changeover, input box operation, discharge plate operation, and single operation switches on the switch panel 56 in the driver's cab. It should be noted that the other switches, except for switch SW-1, are switched only when manual operation force is applied, and return to the neutral position when the hand is released.

CR-1 to CR-13 are control relays, and the normally open and normally closed contacts of these relays are designated by the same code. T-1 to T-6 are timers,
When a preset time has elapsed for each timer after activation by energization, the contacts indicated by the same symbols are turned on, and this state is maintained until the energization is removed.
SOL-1 to SOL-13 are solenoids, and solenoid SOL-1 is for operating the governor device to keep the engine rotation at a constant constant value.
Solenoid SOL-2, SOL-3 is for solenoid valve V-2, solenoid SOL-4, SOL-5
is for solenoid valve V-1, solenoid SOL
-6 is for solenoid valve V-6, solenoid
SOL-7, SOL-8 are solenoid valve V-4
Solenoid SOL-9, SOL-10 is for solenoid valve V-3, solenoid SOL-11 is for solenoid valve V-5, solenoid SOL-
12, SOL-13 is for solenoid valve V-7. Then, by energizing SOL-2 and SOL-3, the rod 15a of the press cylinder 15 contracts and extends, and by energizing SOL-4 and SOL-5, the rod 13a of the packer cylinder 13 contracts,
Extension operation, raising and lowering operation of input box 2 by energizing SOL-7 and SOL-8, SOL-9 and SOL-1
When SOL-11 is energized, the ejection plate 53 is ejected and returned, and when SOL-11 is energized, the automatic locking device 54 is activated.
perform the tightening and opening operations respectively, and enable the ejection operation of the ejection plate 53 by energizing SOL-12,
The automatic return of the discharge plate 53 is enabled by energizing SOL-13.

In addition, D-1 to D23 are diodes that regulate the direction of current flow, F is a fuse, BZ is a buzzer,
PL is a pilot lamp.

The operation of the garbage collection vehicle according to the present invention, which is equipped with the above-mentioned hydraulic circuit and electric circuit, will be described below with reference to time charts shown in FIGS. 10 and 11.

It is now assumed that the packer plate 6 and the press plate 5 are in the positions shown in FIG. 2, and the rod 13a of the packer cylinder 13 and the rod 15a of the press cylinder 15 are both in the most extended state. At this time, micro switches LS-1 to LS-5 are
The situation is as shown in Figure 0.

In such a state, to perform the loading operation, after turning the POT switching lever 55 to "on", turn the power switch, toggle switch SW-1, to the "loading" side, and then press the loading pushbutton PB. When -3 is pressed, the TPO switching lever 55 first changes the micro switch LS-13 from open to closed.
Relay CR-2 and relay CR-12 are energized. In addition, the switching and push button of this switch SW-1
By operating PB-3, relay CR-3 is also energized. Then, by energizing relay CR-3, the relay
CR-5 is energized.

By energizing relay CR-5, governor solenoid SOL-1 is energized and press contraction solenoid SOL-2 is energized to press cylinder 1.
The rod 15a of No. 5 is retracted. Note that at this time, timer T-1 is also energized and activated. The contact of timer T-1 turns on approximately 1 second after its activation.

As mentioned above, the rod 15 of the press cylinder 15
When a is shortened, microswitches LS-2A and LS-2B, which had been on until then, are turned off. Then, the rod 15a of the press cylinder 15
Due to the contraction of the press plate 5, the reversal operation of the first stroke is performed, and finally the state shown in Fig. 3 is reached, and accordingly, the micro switch LS-1 changes from open to closed. .

By closing this microswitch LS-1, relay CR-1 is energized through this switch. By energizing this relay CR-1, relay CR-
When relay CR-6 is energized, relay CR-7 is energized and relay CR-5 is de-energized. Further, the energization of the relay CR-1 de-energizes the press compression solenoid SOL-2, and the energization of the relay CR-7 energizes the packer compression solenoid SOL-4, causing the rod 13a of the packer cylinder 13 to retract. .

This retracting action of rod 13a turns off microswitch LS-4, which had been on until then, and accordingly, relay CR-2 is no longer energized. As the relay CR-2 is de-energized, the relay CR-6 is also de-energized, and in response, the timer T-2 is energized and activated. The contact of the timer T-2 turns on approximately 4 seconds after activation, which is longer than the contraction time of the rod 13a of the packer cylinder 13.

When the rod 13a of the pack cylinder 13 has been compressed to about half, the micro switch LS-5, which had been off until then, turns on, and the relay
When CR-9 is energized, timer T-3 is energized and activated. The press extension solenoid SOL-3 is energized by this energization of the relay CR-9, and the extension operation of the rod 15a of the press cylinder 15 is started. The contact of the timer T-3 turns on about 3 seconds after activation, which is longer than the extension time of the rod 15a of the press cylinder 15.

In this way, the rod of the packer cylinder 13 first begins to compress, then the rod 15a of the press cylinder 15 begins to extend, and then the primary compression operation of the second stroke in which both operations proceed simultaneously is performed, and finally The state shown in FIG. 4 is reached, and the microswitch LS-1 is turned off in response to the start of the stretching operation of the rod 15a of the press cylinder 15. When the state shown in Fig. 4 is reached, the micro switch LS-3 is turned on from off.

By turning on this micro switch LS-3,
Relay CR-13 is energized, and the relay
CR-7 and timer T-2 are de-energized. Then, as the relay CR-7 is de-energized, the packer compression solenoid SOL-4 is de-energized, and the retracting operation of the rod 13a of the packer cylinder 13 is completed. At this time, the relay CR-9 is still energized, so the press extension solenoid SOL-3 continues to be energized, and the second compression operation of the third stroke, in which the rod 15a of the press cylinder 15 continues to extend, is performed, and finally the fifth stroke. It will be in the state shown in the figure.

When the rod 15a of the press cylinder 15 finishes extending, the micro switch LS-2A turns on and the LS-2
B turns on. This micro switch LS-2
When A is turned on, relay CR-10 and timer T-4 are activated.
is energized, and when micro switch LS-2B is turned on, relay CR-12 is energized. This relay CR
-10 is energized, press extension solenoid SOL
-3 is no longer energized, and instead of this, Patsuka extension solenoid SOL-5 and automatic return solenoid SOL-1
3 is energized and the rod 13a of the cylinder 13 is turned on.
begins to stretch.

Due to the extension of the rod 13a of the packer cylinder 13, a garbage pushing operation is performed to push the garbage in the input box 2 into the storage box 1.
Force is applied to the rod of the ejection cylinder 52 that drives the ejection plate 53 inside, and the rod tends to be compressed. For this reason, the oil pressure in the discharge cylinder 52 increases, but when the oil pressure at this time exceeds the set pressure of the relief valve 71b, the oil in the cylinder 52 is drained from the solenoid valve V.
-7, it flows out through the relief valve 71b, thereby allowing the discharge plate 53 to return. This return movement of the discharge plate 53 is performed by the cylinder 52.
It stops when the oil pressure inside becomes less than the set pressure of the relief valve 71b.

The contact of the timer T-4 turns on approximately 5 seconds after activation by energization, which is longer than the extension time of the rod 13a of the packer cylinder 13.

Micro switch LS-3 is turned off in response to the extension of rod 13a of packer cylinder 13, and as a result, relay CR-13 is no longer energized.
Thereafter, a fourth stroke of pushing operation is performed in which the rod 13a of the packer cylinder 13 is extended, and finally the state shown in FIG. 2 is reached.

When the rod 13a of the packer cylinder 13 is fully extended as shown in FIG.
LS-4 is turned on, and relay CR-2 is energized accordingly. By energizing relay CR-2, relay CR-5 is energized, and timer T-
1 is energized. In addition, due to the energization of relay CR-5, the energization of the pusher extension solenoid SOL-5 is stopped, and the extension operation of the rod 13a of the pusher cylinder 13 is completed, and instead of this, the press contraction solenoid SOL
-2 is energized and the rod 15 of the press cylinder 15
The contraction movement of a starts.

In response to the start of contraction of the rod 15a of this press cylinder 15, the micro switches LS-2A and LS-
2B is turned off, and thereafter the first stroke in which the rod 15a of the press cylinder 15 is retracted is performed, and the next second stroke, third stroke, and so on are repeated in the same manner as in the above case.

Now, near the end of the 4th stroke, operate the "Stop" pushbutton and turn off pushbutton switch PB-2.
At this point, the relays, timers, and solenoids other than relay CR-12 are de-energized, and the operation of the device is stopped.

Assuming that the micro switches LS-2A and LS-2B are on and all others are off in the state of the micro switches at the time of this operation stop, "loading" is started again.
The operation when the push button switch PB-1 is activated by operating the push button will be described below.

When switch PB-1 is activated, relay CR- is first activated.
3 is energized, and in response, relay CR-5 and timer T-1 are energized. By energizing relay CR-5, governor solenoid SOL-1 and press contraction solenoid SOL-2 are energized, and the rod 15a of press cylinder 15 starts to compress. After one second has elapsed, the contact of timer T-1 is turned on, relay CR-4 is energized, and in response, energization is applied to Patch Extension solenoid SOL-5, which causes the rod 13a of Patch Cylinder 13, which is not fully extended, to extend. will be held.

When the rod 15a of the press cylinder 15 is completely compressed during the extension operation of the rod 13a of the packer cylinder 13, the micro switch LS-
1 is on, and this micro switch LS-1
Relay CR-1 is energized by turning on. By energizing this relay CR-1, the press contraction solenoid
SOL-2 is de-energized and press cylinder 1
The contraction operation of the rod 15a of No. 5 is completed.

When the rod 13a of the locking cylinder 13 is fully extended, the micro switch LS-4 is turned on.
In response to this, relay CR-2 is energized. By energizing relay CR-2, relay CR-6 is energized instead of de-energizing relay CR-4. When relay CR-6 is energized, relay CR-7 is energized, but relay CR-5 is de-energized and timer T-1 is also de-energized.

In addition, the energization of the relay CR-7 energizes the packer contraction solenoid SOL-4, which in turn retracts the rod 13a of the packer cylinder 13.
The process starts, and thereafter the process is repeated in the order of 3rd, 4th, 1st, etc.

Now, suppose that the operation of the plate stops due to dust in the middle of the above-mentioned second process, the contact of timer T-2 turns on approximately 4 seconds after starting, and relays CR-8 and CR-10 and timer T-2 are activated. T-4
is energized. When the relay CR-8 is energized, the press expansion solenoid SOL-4 is de-energized, and when the relay CR-10 is energized, the press extension solenoid SOL-3 is de-energized, but when the relay CR-10 is energized, the press expansion solenoid SOL-5 is energized. At the same time, timer T-5 is also energized and activated.

When approximately one second has elapsed after the timer T-5 is activated, its contact is turned on, relay CR-11 is energized, and in response, solenoid SOL-6 is energized. This solenoid SOL-6 operates the solenoid valve V-6, and part of the hydraulic pressure to the press cylinder 13 is supplied to the press cylinder 15, and the rod 15a of the press cylinder 15 is also extended at the same time. This is an operation to bring the state of the plate to the state after execution of the fourth step.

By the way, rod 1 of this packer cylinder 13
If the plate stops due to dust during the extension operation of 3a, its contact turns on approximately 5 seconds after the start of timer T-4, and relay CR-5 is activated.
is energized, and in response, timer T-1 and press compression solenoid SOL-2 are energized, and power is removed from patch extension solenoid SOL-5 and timer T-5, and the contact of timer T-5 is turned off. . By turning off the timer T-5 contact, the solenoid
Power to SOL-6 also disappears.

Approximately 1 second after the timer T-1 is started, its contact is turned on, relay CR-4 is energized, and in response, Patch extension solenoid SOL-5 is energized.
That is, about one second after the rod 15a of the press cylinder 15 is retracted, the rod 13a of the packer cylinder 13, which has not been fully extended, is extended. And the rod 15 of the press cylinder 15
When a is completely compressed, the micro switch LS-1 is turned on and the relay CR-1 is energized, and in response, the press contraction solenoid SOL-2 is de-energized.

After that, when the rod 13a of the locking cylinder 13 is fully extended, the first stroke is completed and the micro switch LS-4 is turned on, and in response, the relay CR is turned on.
-2 is energized.

When relay CR-2 is turned on, relay CR-6 is energized, but relay CR-4 and Patsuka extension solenoid SOL-5 are de-energized. and relay CR
-6 is energized, relays CR-8, CR-9 and
CR-10 loses power. This relay CR-8
In response to the de-energization, the packer contraction solenoid SOL-4 is energized and the retracting operation of the rod 13a of the packer cylinder 13 in the second stroke begins.

If the press plate stops moving due to dust during the third step after the end of the second step, the contact will turn on approximately 3 seconds after the start of timer T-3. ,relay
When CR-10 is energized, timer T-4 is activated. Then, the energization of the relay CR-10 energizes the pucker extension solenoid SOL-5 and the timer T-5, and the energization of the pucker extension solenoid SOL-5 starts the extension operation of the rod 13a of the pucker cylinder 13. After about one second, the contact of timer T-5 is turned on, energizing relay CR-11, and in response, solenoid SOL-6 is energized.

By energizing this solenoid SOL-6, hydraulic pressure is supplied to the press cylinder 15, and the rod 15 is
a performs an extension action, and at the end of the fourth stroke when the extension action ends, the micro switch LS-2A and
LS-2B is turned on, and accordingly relay CR-11, solenoid SOL-6 and timer T-5 are de-energized. Solenoid SOL−
6 is no longer energized, hydraulic pressure is no longer supplied to the press cylinder 15.

Thereafter, the extension of the rod 13a of the packer cylinder 13 progresses, and when the rod 13a is fully extended, the micro switch LS-4 is turned on, and in response, the relay CR-2 is energized. By energizing relay CR-2, relay CR-5 and press contraction solenoid SOL-2 are energized, timer T-1 is started, and rod 15a of press cylinder 15 starts to compress. That is, the first process starts.
Thereafter, the second, third, fourth steps, etc. are repeated in order.

Next, the operation when discharging the garbage stored in the storage box 1 will be explained.

First, the PTO switching lever 55 is brought into contact to perform the ejection operation, and then the switch SW-1 is turned to the "ejection" side. At this time, the rod 15a of the press cylinder 15 is not in the most contracted state, that is, it is not fully compressed, and the rod 15a of the packer cylinder 13 is
If 3a is not in the fully extended state, that is, it is not fully extended, the micro switches LS-1 and LS-
2B, LS-3 and LS-4 are all off and relays CR-1, CR-2, CR-12 and CR-
13 are not energized.

In this state, switch SW-2 is set to “up”
When tilted to the side, timer T-6 and discharge solenoid
SOL-9 and tightening/opening solenoid SOL-11 are energized. By energizing this solenoid SOL-11,
The input box 2 is unlocked and can be raised. Further, the contact of timer T-6 is turned on approximately 1 second after its activation. When the contact of timer T-6 is turned on, relay CR-11 is energized, and in response, lift solenoid SOL-7 is energized to supply hydraulic pressure to lift cylinder 51, which extends the rod and opens loading box 2. Rise.

In addition, the energization of the above discharge solenoid SOL-9 is as follows:
By blocking the oil passage in the solenoid valve V-7, a large hydraulic pressure is supplied to the cylinder 73 of the automatic locking device 54, and the lock can be reliably released. -6 will disappear after about 1 second timer time.

As the input box 2 starts to rise, the micro switch LS-11 is turned on. Also, when the input box 2 rises to a predetermined position of 45 degrees or more, the micro switch is activated.
LS-10 and LS-10B turn on. When the input box 2 has risen to the specified position, switch SW-2
When the operation is stopped, switch SW-2 returns to the neutral position.

In the above condition, when switch SW-4 is tilted to the press extension and patch extension side, the press extension solenoid will be activated.
When the SOL-3 and the pin extension solenoid SOL-5 are energized, the rod 15a of the press cylinder 15 and the rod 13a of the pin cylinder 13 are extended simultaneously, and when the rod 15a of the press cylinder 15 is fully extended, the micro switch LS-2B is turned on. Then, relay CR-12 is energized, and Patsuka cylinder 13
When the rod 13a is fully extended, the micro switch
LS-4 turns on and relay CR-2 is energized.

By energizing these relays CR-12 and CR-2, the press expansion solenoid SOL-3 and the press expansion solenoid
SOL-5 is no longer energized and the extension operation of each cylinder is completed. This state is the state where the fourth stroke, that is, the pushing operation has been completed, and at this time, both microswitches LS-1 and LS-3 are off.

In this state, when the switch SW-4 is next turned to the press compression and patch compression sides, the press compression solenoid SOL-2 and the patch compression solenoid SOL-4 are energized, and both the press cylinder 15 and patch cylinder 13 are compressed. done at the same time. When the rod 15a of the press cylinder 15 is completely compressed, the micro switch LS-1 is turned on and the relay CR-1 is turned on.
is energized, and when the rod 13a of the packer cylinder 13 is completely retracted, the micro switch LS-3 is turned on and the relay CR-13 is energized. Both relays CR−
1. By energizing CR-13, the press contraction solenoid SOL-2 and the pack compression solenoid SOL-4 are de-energized, and the contraction operation of each cylinder is completed.

Incidentally, when the rods of the press cylinder 15 and the press cylinder 13 are simultaneously extended and contracted, the hydraulic pressure to the press cylinder 13 is supplied by the discharged oil of the press cylinder 15, as is clear from the hydraulic circuit in FIG. In this state, the amount of oil required to expand and contract the rod 15a of the press cylinder 15 is the same as that of the rod 13a of the press cylinder 13.
is smaller than the amount of oil required for expansion and contraction, the press plate 5 when both cylinders 15 and 13 are contracted.
The locus of is away from the arcuate surface _2b2 of the bottom 2b of the input box 2, as shown by X in FIG. It comes to approach the circular arc surface 2b ₂ , and the garbage remaining in the input box 2 when the input box 2 is raised can be effectively dropped.

As mentioned above, when the switch SW-3 is turned to the discharge side before, after, or at the same time as the garbage in the input box 2 falls by manual operation of the switch SW-4, Discharge solenoid SOL-9 and discharge plate actuation solenoid
SOL-12 is energized, which causes the discharge cylinder 5 to flow through the solenoid valves V-3 and V-7.
Hydraulic pressure is supplied to the rod 2 to extend the rod, and the discharge plate 53 is retracted. By retreating the discharge plate 53, the garbage inside the storage box 1 is discharged to the outside through the opening 1a.

Note that when the discharge plate 53 moves from the predetermined position to the opening of the storage box 1, the micro switch LS-7
will be in the state shown in the figure.

By the way, during the above-mentioned garbage discharge operation, the movement of the discharge plate 53 may be stopped because the garbage gets caught in the middle. In such a case, if you move the switch SW-3 to the return side, return the discharge plate 53 slightly, and then operate the discharge operation again, the discharge plate 53 will move vigorously and be able to overcome the accumulation of garbage. .

After confirming that the dust discharge is completely completed, turn the switch SW-2 to the lowering side, and the solenoid SOL returns via the micro switch LS-7.
-10 and the discharge plate operating solenoid SOL-12 are simultaneously energized to return the discharge plate 53. When the discharge plate 53 returns to the predetermined position, the micro switch LS-7 switches to the opposite side as shown in the figure, thereby stopping the return operation of the discharge plate 53 and energizing the lowering solenoid SOL-8. A lowering operation of the input box 2 is performed. At this time, the tightening/opening solenoid SOL-11 is activated by the micro switch LS-
11, the automatic locking device 54 is open, and the dropping box 2 can move downwardly beyond the automatic locking device 54. Then, when the input box 2 is sufficiently lowered, the micro switch LS-11 is turned off, and the tightening/opening solenoid SOL-11 is no longer energized.
This causes the automatic locking device 54 to tighten and lock the input box 2.

〔effect〕

As explained above, according to the present invention, when the input box is raised to discharge garbage from the storage box, the press plate and the packing plate are moved through a predetermined trajectory different from that during normal loading. Since they can be moved at the same time, the garbage remaining in the input box can be dropped and discharged efficiently and reliably in a short time when the input box is in the raised state.

[Brief explanation of drawings]

The drawings show embodiments of the present invention, and FIG. 1 is a side view showing a garbage collection vehicle according to the present invention, and FIGS.
The figures are cross-sectional views showing different operating states of the mechanical parts of the garbage collection vehicle according to the invention, FIG. 6 is a hydraulic circuit diagram of the garbage collection vehicle according to the invention, and FIG. 7 is an electric circuit of the garbage collection vehicle according to the invention. FIGS. 8 and 9 are electrical circuit diagrams showing the arrangement of the microswitches in FIG. 7, and FIGS. 10 and 11 are time charts and FIGS. The figure is a diagram showing the operation of the garbage collection vehicle according to the present invention. DESCRIPTION OF SYMBOLS 1... Garbage storage box, 1a... Opening, 2... Garbage input box, 2a... Input port, 5... Press plate, 6... Packer plate, 17... Guide rail (predetermined track),
13...Pack cylinder, 13a...Rod, 15...
Press cylinder, 15a...rod, LS-2B...
Micro switch (first detection means), LS-1...
Micro switch (second detection means), LS-4...
Micro switch (third detection means), LS-3...
Micro switch (fourth detection means), LS-1
0, LS-10B...Micro switch (fifth detection means), SW-4...Switch (manual switch means), CR-1, CR-2, CR-12, CR-13
...Relay (means), V-1, V-2...Solenoid valve.

Claims (1)

[Claims] 1. The upper end is swingably supported and the lower end is on a predetermined track 1
Patuka plate 6 guided to move 7
, a press plate 5 whose upper end is rotatably supported by the lower end of the packer plate 6, and a rod 13a.
and a press cylinder 15 that rotates the press plate 5 relative to the packer plate 6 and moves the free end downward and upward by the expansion and contraction of the rod 15a. In the first step when putting garbage into the garbage input box 2 from the opening 2a, the rod 15a of the press cylinder 15 is fully extended from the state in which both the rod 15a of the press cylinder 15 and the rod 13a of the packer cylinder 13 are fully extended. In the second step of compressing and crushing the garbage thrown into the garbage input box 2, the packing cylinder 13 is compressed from the final state of the first step.
In the third step, the rod 13a of the press cylinder 15 is brought into a state where it is minimized and the rod 15a of the press cylinder 15 is slightly expanded, and the garbage is further compressed and crushed in the garbage input box 2. In the fourth step, the rod 15a of the cylinder 15 is in the most extended state, and the compressed and crushed garbage in the garbage input box 2 is scraped up toward the opening 1a of the garbage storage box 1, from the final state of the third step. In the garbage collection vehicle, the garbage collection vehicle is provided with a garbage input box 2 having a garbage loading device that allows the rod 13a of the press cylinder 13 to be in a fully extended state and is tiltably provided in the opening 1a of the garbage storage box 1, wherein the press cylinder 15 first and second detection means LS-2B, LS-1 for detecting the most extended and most contracted states of the rod 15a of the packer cylinder 13, respectively; and a third detecting means for detecting the most extended and most contracted states of the rod 13a of the packer cylinder 13, respectively and fourth detection means LS-4, LS-3; fifth detection means LS-10, LS-10B for detecting the rise of the garbage disposal box 2 to a predetermined position; and the first and second states. manual switch means SW-4, which is operated when the fifth detection means LS-10, LS-10B detects the rise of the garbage disposal box 2 to a predetermined position; SW-4 1st
In response to the operation to the state, the first and third detection means LS-2B, LS-4 detect the rods 15a, 1 of the press cylinder 15 and the packing cylinder 13.
means CR-12, CR-2 forming a circuit for simultaneously extending both the rods 15a, 13a of the press cylinder 15 and the locking cylinder 13 until the maximum extension state of the rods 3a is detected, respectively; The second manual switch means SW-4 when the means LS-10 and LS-10B detect the rise of the garbage disposal box 2 to a predetermined position.
In response to the operation to the state, the second and fourth detection means LS-1 and LS-3 detect the press cylinder 1.
5 and the rods 15a, 13 of the packer cylinder 13
means CR-13, CR-1 for forming a circuit for simultaneously reducing the rods 15a, 13a of the press cylinder 15 and the packer cylinder 13 until the maximum reduction of the cylinders 15, 13 is detected, respectively; It is equipped with solenoid valves V-1 and V-2 that switch the hydraulic path so that the hydraulic pressure to the press cylinder 13 during simultaneous operation is supplied by the discharge oil of the press cylinder 15, and the oil required for the expansion of the press cylinder 15 is provided. A garbage collection vehicle characterized in that the volume of the garbage cylinder 13 is smaller than that of the garbage cylinder 13.