JPH01271304A - Refuse push-in machine for refuse collecting vehicle - Google Patents

Abstract

PURPOSE:To prevent counterflow of refuse, in a refuse push-in machine mounted on a packer, by farther rotating a push-in board forward in the direction of a collection box in the final stage of lifting stroke. CONSTITUTION:A slide cylinder 14 is extended to move a slider 10 and a push-in board integrally upward along a guide groove 8 so that the refuse in a packer 3 is contained through the push-in board 11 into a collection box 1. When the tip of the push-in board 11 rides over the upper end of a guide face 7 and the rotation reaches to a predetermined value in the final stage of the stroke, a control valve not shown is switched to feed return oil from the slide cylinder 14 to a push-in board cylinder 13 so as to extend the push-in board cylinder 13 together with the slide cylinder 14. Consequently, the push-in board 11 is rotated forward in the direction of the collection box 1 farther than the guide face 7 while being lifted, thus pushing the garbage forcibly into the collecting box 1. By such arrangement, counterflow of garbage is prevented.

Description

Detailed Description of the Invention A1 Object of the Invention (1) Industrial Field of Application The present invention relates to a garbage pushing device attached to a bunker connected to a storage box of a garbage collection vehicle, and particularly relates to a garbage pushing device that is attached to a bunker connected to a storage box of a garbage collection vehicle. The present invention relates to a garbage pushing device in a garbage collection vehicle that is moved in cycles by a cylinder.

(2) Prior Art As a conventional garbage pushing device for a garbage collection vehicle, the one described in Japanese Patent Publication No. 48405/1983 is known.

The above-mentioned garbage pushing device has a pushing plate attached to a bunker connected to a storage box of a garbage collection vehicle so as to be able to move up and down and swing back and forth. It moves the board in a cyclical motion,
In the process of this cyclical movement of the pushing plate, the dust thrown into the interior of the puffing force is compressed and pushed into the storage box.

(3) Problems to be Solved by the Invention However, in the conventional garbage pushing device described above, after the pushing plate descends inside the bunker and compresses the garbage, the pushing plate swings and rises to move the garbage into the storage box. During the process of pushing the garbage into the storage box, it was difficult to push the garbage sufficiently deep into the storage box. For this reason, there is a problem in that, especially when the storage box is nearly full, the garbage that has been pushed into the storage box flows back into the bunker.

The present invention has been made in view of the above-mentioned circumstances, and provides a garbage collection vehicle that prevents the backflow of garbage by pushing the garbage sufficiently deep into the storage box when pushing the garbage from the bunker into the storage box. The technical challenge is to provide a garbage pushing device.

B0 Structure of the Invention (1) Means for Solving the Problems In order to solve the above problems, the garbage pushing device in the garbage collection vehicle of the present invention is installed inside a bunker connected to the rear of the storage box, A slider that is driven up and down by a cylinder for use, and a push plate that is pivotally supported by the slider and is driven to rotate forward and reverse by a cylinder for the push plate.
Garbage pushing in a garbage collection vehicle, comprising a control device that sequentially controls the slide cylinder and the pushing plate cylinder and causes the pushing plate to perform a cyclic movement consisting of a reversing stroke, a landing stroke, a normal rotation stroke, and an upward stroke. The apparatus is characterized in that the control device is configured to further drive the pushing plate forward in the direction of the storage box in the latter half of the upward stroke.

(2) Function The garbage pushing device in the garbage collection vehicle of the present invention having the above-described configuration includes a slide cylinder that raises and lowers the slider, and a push plate that rotates the push plate pivoted on the slider in normal rotation and reverse rotation. By sequentially controlling the storage cylinders by the control device, the garbage in the bunker is compressed during the landing stroke and normal rotation stroke of the pusher plate, and the compressed garbage is sent into the storage box during the subsequent upward stroke of the pusher plate. There is. Then, in the latter half of this upward stroke, the control device further drives the pushing plate forward in the direction of the storage box to push the garbage deep into the storage box.

(3) Embodiment Hereinafter, an embodiment of the garbage pushing device for a garbage collection vehicle according to the present invention will be described based on the drawings.

As shown in Fig. 1, a bunker 3 is rotatably connected to the rear upper end of a garbage storage box 1 placed on the frame of a garbage collection vehicle by means of a hinge bin 2. When the bunker 3 is connected to the storage box 1, the opening 4 formed in the bunker 3 communicates with the inside of the storage box 1. The bunker 3 has an input port 5 formed at its rear, and a downwardly recessed arc-shaped compression surface 6 at the bottom continuous with the input port 5.
A guide surface 7 is formed that stands up diagonally L toward the storage box 1 and continues to the opening 4.

A garbage processing device that compresses garbage and pushes it into the storage box 1 is housed in the bunker 3, and will be described below.
The device will be described in detail.

Guide grooves 8 are formed in both side walls of the bunker 3 from the upper front to the lower rear, and a pair of left and right sliders 10 having a pair of guide rollers 9a and 9b are slidably inserted into the guide grooves 8. It is supported.

A push plate 11 is swingably supported between the lower ends of both sliders 10 by a pivot 12, and a bracket lia protruding from the back of the push plate 11 and the upper end of the slider 10 are connected to the push plate 11 in the normal rotation direction and Both ends of the pushing plate cylinder 130 for swinging in the reverse direction are pivotally supported. and,
Both ends of a slide cylinder 14 for moving the slider 10 up and down along the guide groove 8 are pivotally supported at the middle of the slider IO and the lower end of the bunker 3.

Therefore, by sequentially controlling the sliding cylinder 14 and the pushing plate cylinder 13, the pushing plate 11 is moved through the reversing stroke A, the descending stroke B, as shown by the chain line in FIG.
It becomes possible to perform a cycle motion consisting of four strokes, including a normal rotation stroke C1 and an upward stroke.

2 to 4 show a cycle motion device for causing the pushing plate 11 to perform the above-mentioned Nicycle motion.

In FIG. 2, a fluid pump 17 is connected to a rotating wheel 16 of a power take-off device 15 connected to a running engine of a garbage collection vehicle.
is connected, and the hydraulic fluid discharged from this fluid pump 17 operates the cycle motion device 1B shown in FIG.

Next, the structure of the cycle exercise device 18 will be explained with reference to FIG. A discharge pipe 19 of the fluid pump 17 is connected to a control valve 20a, and further connected to another control valve 20b via a communication pipe 19a. The control valve 20a is connected via a conduit 21.22 to the rod side chamber 23 and the piston side chamber 24 of the slide cylinder 14, and the control valve 20b is connected to the conduit 25.
．． 26 to the rod side chamber 27 of the cylinder 13 for the pushing plate.
and the piston side chamber 2nd. Control valve 20a
has a solenoid 32 to switch it to the left or right.
．． S4 and the control valve 20b are respectively connected to solenoids 31°S3 for switching it to the left and right, and these solenoids 81 to S4 are operated according to a fixed cycle by a control device 29, which will be described later. The control valves 20a and 20b are switched to operate the slide cylinder 14 and the push plate cylinder 13.

As shown in FIG. 2, the driving rotary wheel 16 of the fluid pump 17
An inverted-shaped proximity plate 30 is fixed to the 0-rotation shaft 16, and a sensing device 31 is disposed close to and facing the proximity plate 30. When the proximity plate 30 approaches the sensing device 31, the sensing device 31
Changes are given to the high frequency waves being emitted from the pump, and as a result, the rotational speed of the fluid pump 17 can be extracted as a high frequency signal.

The control bag W29 of the cycle motion device 18 that receives the high frequency signal transmitted from the sensing device 31 is connected to the fluid pump 17.
The actual rotational speed of the fluid pump 17 is measured, and the measured rotational speed is compared with a preset rotational speed. If the rotational speed of the fluid pump 17 matches the set rotational speed, the control of the cycle motion device 18 is performed each time. The valves 20a and 20b are operated to switch.

FIG. 4 shows details of the control device 29, which includes a counting circuit 5, an output circuit group N, and an output holding circuit group M. The counting circuit receives the high frequency signal transmitted from the sensing device 31 and measures the rotational speed of the fluid pump 17 using a binary system. The output circuit group N
is composed of six output circuits N1 to N6 arranged in parallel, and when the actual rotation value of the fluid pump 17 measured by the counting circuit reaches a preset rotation value, the output holding circuit group described later is activated. It emits an output to M.

Further, the output holding circuit group M includes six output holding circuits M.
1 to M6 are arranged in parallel, and the output circuit group N
receiving the output transmitted from the control valve 20a,
Four solenoids S1 to S4 for switching 20b
It controls the operation of the solenoid group S consisting of the solenoid group S, and keeps the solenoid group S in an energized state or in a de-energized state, and thereafter repeats this action. The output circuit group N and the output holding circuit group M are connected by a transmission line 3-j as shown in FIG. It acts to switch the solenoid group S to a non-energized state.

Output circuit N6 of the output circuit group N is connected to a counting circuit and a transmission line, and counts the output transmitted from output circuit N6 when the actual rotation value reaches the maximum value of the set rotation value. This is used to reset the value measured by the counter circuit to zero.

Next, the operation of one embodiment of the garbage pushing device in the garbage collection vehicle according to the present invention having the above-mentioned configuration will be explained in the above-mentioned first to fourth embodiments.
In addition to the drawings, the explanation will be made using FIG. 5 (time chart of solenoids 51 to S2) and FIG. 6 (state diagram of each stroke A to D).

FIG. 1 shows a state in which the push plate 11 has completed its upward stroke, and the slide cylinder 14 has expanded and the slider 1
0 is located at the upper end of the guide groove 8, the pushing plate cylinder 13 is also extended, and the pushing plate 11 is in the state of being rotated most forward in the direction of the storage box 1.

When the power take-off device 15 starts driving the fluid pump 17 via the rotating shaft 16 from this state, the number of rotations increases to 3.
By the time the rotation is reached, the operation of the fluid pump 17 enters a steady state and discharges hydraulic oil at a predetermined pressure. In Figure 4,
When the counting circuit measures three revolutions of the fluid pump 17, an output signal is transmitted from the output circuit N1, and this is received by the output holding circuit M1 via the transmission line a. Then, the output holding circuit M1 energizes the solenoid S1 to close the control valve 20b.
switch to the left, and transfer the hydraulic oil from the fluid pump 17 to No. 6A.
As shown in the figure, the rod side chamber 27 of the cylinder 13 for the pushing plate
supply to. Then, the pushing plate cylinder 13 contracts,
As a result, the pushing plate 11 is reversed in the direction away from the storage box 1 and placed in a horizontal state (reversal step A). In this state, garbage is introduced into the bunker 3 from the input port 5.

When the rotation of the fluid pump 17 continues and the value measured by the counting circuit reaches 28 rotations, an output signal is transmitted from the output circuit N2, and this signal is sent to the output holding circuit M1 via the transmission lines f and b. and M2, the output holding circuit M1 cuts off the energization to the solenoid S1, and the output holding circuit M2 energizes the solenoid S2.
to the left and the control valve 20b to the center. Then, as shown in FIG. 6B, the hydraulic oil from the fluid pump 17 is supplied to the rod side chamber 23 of the slide cylinder 14, whereby the slide cylinder 14 contracts and guides the slider 10 integrally with the pushing plate 11. It is moved downward along the groove 8 (downward stroke B).

In this process, the garbage thrown into the bunker 3 is compressed from above by being sandwiched between the pushing plate 11 and the compression surface 6.
Its bulk is reduced.

When the rotation of the fluid pump 17 continues further and the value measured by the counting circuit reaches 65 rotations, an output signal is transmitted from the output circuit N3, and this signal is sent to the output holding circuit via the transmission lines g and c. M2 and M3, the output holding circuit M2 cuts off the energization to the solenoid S2, and the output holding circuit M3 energizes the solenoid S3 to close the control valve 20a.
to the center and the control valve 20b to the right. Then, as shown in FIG. 6C, the hydraulic oil from the fluid pump 17 is supplied to the piston side chamber 28 of the pushing plate cylinder 13, whereby the pushing plate cylinder 13 expands and the pushing plate 11
is rotated forward in the direction of the storage box 1 until it becomes approximately vertical (normal rotation stroke C). In this stroke, the debris compressed in the previous stroke is further compressed and pressed against the guide surface 7 side. Then, at the end of this stroke, the pushing plate cylinder 1
3 is set to extend to the middle position of the entire stroke.

When the value measured by the counting circuit reaches 101 revolutions, an output signal is transmitted from the output circuit N4, and this signal is received by the output holding circuits M3 and M4 via the transmission line d, and the output holding circuit M3 cuts off the energization to the solenoid S3, and the output holding circuit M4 energizes the solenoid S4 to switch the control valve 20b to the center and the control valve 20a to the right.

Then, the hydraulic oil from the fluid pump 17 is supplied to the piston side chamber 24 of the slide cylinder 14 as shown in FIG. 8 (ascending stroke D). In this process, the garbage in the bunker 3 is pushed up along the guide surface 7 by the pushing plate 11 and sent into the storage box 1 through the opening 4. Then, in the latter half of this upward stroke, the pushing plate 11
When the top end of the guide surface 7 passes over the upper end of the guide surface 7 and the value measured by the counting circuit reaches 165 revolutions, an output signal is transmitted from the output circuit N5, and this signal is transmitted again via the transmission line e. is received by the output holding circuit M3, and the output holding circuit M
3 energizes the solenoid S3 and switches the control valve 20b to the right. Then, as shown in FIG. 6E, the return oil from the slide cylinder 14 is supplied to the piston side chamber 2 of the push plate cylinder 13, and the push plate cylinder 13 expands simultaneously with the extension of the slide cylinder 14. As a result, the pushing plate 11 rises, passes over the guide surface, and further rotates forward in the direction of the storage box 1, and the garbage is forcibly pushed into the storage box 1.

When the value measured by the counting circuit reaches 180 revolutions, an output signal is transmitted from the output circuit N6, and this signal is received by the output holding circuits M3 and M4 via the transmission lines j and i, and the output holding circuit M3 and M4 are solenoid S3.
The power supply to S4 is cut off, and both split-open valves 20b and 20a are switched to the center position. At the same time, the output signal sent from the output circuit N6 to the counting circuit via the transmission line k is reset once by resetting the numerical value being measured by the counting circuit to zero, and subsequently stopping the fluid pump 17. cycle movement is completed.

Although the embodiments of the garbage transporting device in the garbage collection vehicle according to the present invention have been described in detail above, the present invention is not limited to the above embodiments, and there is no deviation from the scope of the present invention as set forth in the claims. However, various minor design changes can be made.

For example, the slide cylinder and push plate cylinder can be installed in opposite directions, and the slider can be raised or lowered by contraction and expansion of the slide cylinder, or the push plate can be rotated forward or backward by contraction and expansion of the push plate cylinder. It is possible to do this.

Also, instead of controlling the cylinder sequence by measuring the rotational speed of the fluid pump, it is also possible to arrange a limit switch at each stroke of the cyclic movement of the pushing plate, and use this limit switch to control the cylinder sequence. .

Effects of the C0 Invention According to the above-mentioned garbage pushing device for a garbage collection vehicle of the present invention, in the latter half of the upward stroke in which the pushing plate that makes a cyclic movement in the bunker sends out the compressed garbage to the storage box, this pushing plate Since it is further driven forward in the direction of the storage box, it is possible to forcibly push the garbage deep into the storage box, and it is possible to prevent the garbage inside the storage box from flowing back into the pack. Become.

[Brief explanation of the drawing]

FIG. 1 is an overall side view of a garbage pushing device in a garbage collection vehicle according to an embodiment of the present invention, FIG. 2 is a perspective view of a rotation speed measuring section of a fluid pump, and FIG. 3 is an explanatory diagram of a cycle movement device.
FIG. 4 is an explanatory diagram of the control device, FIG. 5 is a time chart of the operation of the torsion and /id, and FIGS. 6A to 6E are state diagrams of each stroke of the cycle motion. DESCRIPTION OF SYMBOLS 1... Storage box, 3... Bunker, lO... Slider, 11... Push plate, 13... Push plate cylinder, 1
4...Slide cylinder, 29...Control device 2nd
Figure 3 Figure 6E

Claims (1)

[Claims] A slider (10) mounted inside a packer (3) connected to the rear of the storage box (1) and driven up and down by a slide cylinder (14);
), the pushing plate (11) is driven forward and backward by the pushing plate cylinder (13), the sliding cylinder (14) and the pushing plate cylinder (13) are sequentially controlled, The plate (11) has a reversal stroke, a downward stroke,
In a garbage pushing device for a garbage collection vehicle equipped with a control device (29) for performing a cyclic movement consisting of a normal rotation stroke and an upward stroke; in the latter half of the upward stroke, the pushing plate (11) is moved into the storage box (1). A garbage pushing device for a garbage collection vehicle, characterized in that the control device (29) is configured to further rotate forward in the direction of .