JP2002179203A - Garbage loader of garbage truck - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a garbage loader of a garbage truck for preventing garbage pushed in a body from flowing backward to the tail gate side. SOLUTION: A part of a raking-in plate 20 pivotally fixed to a lower part of a loading plate 7 lifting along a deflector 5 arranged inside the tail gate 3 is cut out. A backflow preventive panel 24 having a rotary fulcrum in the lower part of the loading plate is arranged in this cutout 23. The backflow preventive panel 24 is positioned on the body side more than a raking-in plate front face when the raking-in plate is reversed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refuse loading device for a refuse collection vehicle which prevents refuse contained in a body from flowing back to a tailgate when a scraping plate is turned over.

[0002]

2. Description of the Related Art As shown in FIG. 14, a commonly used refuse collection vehicle has a vehicle body 1, a body 2 mounted on the vehicle body 1 for storing dust, and a rear end of the body 2. It has a tailgate 3 pivotally attached and a refuse loading device 4 disposed inside the tailgate 3.

As shown in FIG. 14, the refuse loading device 4 has a deflector 5 fixed above the inside of the tailgate 3 and guide rails provided on both side walls of the tailgate 3 along the deflector 5. 6, a loading plate 7 supported by the guide rails 6, 6 via rollers 7a so as to be able to move up and down, a scraping plate 8 pivotally attached to a lower portion of the loading plate 7, and a loading plate. 7 includes a cylinder (not shown) that moves up and down along the guide rails 6 and 6, and a cylinder (not shown) that swings the scraping plate 8 about the support shaft.

That is, the scraping plate 8 of the refuse loading device 4
Is performed by performing a series of operations in which the loading plate 7 swings from the dotted line position to the solid line position at the rising position, and the loading plate 7 swings from the one-dot chain line position to the two-dot chain line position at the lowered position. , A tailgate 3 through a refuse input port 9 provided on the rear surface of the tailgate 3.
The dust 11 thrown into the sump 10 is sequentially pushed into the body 2 mounted on the vehicle body 1.

[0005]

SUMMARY OF THE INVENTION
In order to push the trash thrown into the tailgate sump into the body, the rake plate is moved from the dotted line position to the solid line position at the rising position of the loading plate, and from the one-dot chain line position to the two-dot chain line at the lowered loading plate position. When the scraping plate is inverted from the dotted line position to the solid line position at the rising position of the loading plate, the dust that has been pushed into the body and held by the scraping plate is moved to the lower end of the deflector and the upper end of the sump. Backflow to the tailgate side through the space between the refuse and the dust that has been thrown into the sump may be pushed out of the tailgate.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and has a dust loading device for a dust collection vehicle in which dust pushed into a body is prevented from flowing back to a tailgate side when a scraping plate is inverted. The purpose is to provide.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and a dust loading device of a dust collection vehicle for preventing dust pushed into a body from flowing back to a tailgate side when a scraping plate is inverted. The purpose is to provide.

[0008]

According to the present invention, there is provided a garbage loading device for a refuse collection vehicle, comprising: a body mounted on a vehicle body for storing garbage; a tailgate pivotally attached to a rear end of the body; A deflector, a loading plate ascending and descending along the deflector, and a scraping plate pivotally attached to a lower portion of the loading plate, and a part of the scraping plate is cut out. A backflow prevention panel with a rotating fulcrum is placed at the bottom of the loading plate, and the backflow prevention panel is pushed into the body by positioning it on the body side from the front of the rake plate when the rake plate is inverted. In addition to preventing the dust from flowing back to the tailgate side, the weight increase by the backflow prevention panel and the reduction of the space at the front of the rake plate by the installation of the backflow prevention panel are suppressed.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. 1 and FIG.
The same members as 4 are denoted by the same reference numerals.

In FIGS. 1 and 2, reference numeral 20 denotes a scraping plate. A notch 23 is formed in a portion of the scraping plate 20 on the side of the toe 21 including the pivot 22 above the toe 21. The notch 23 has a substantially fan-shaped cross section, and has a widthwise length penetrating in the front-rear direction except for both side portions 20 a of the scraping plate 20. Then, a backflow prevention panel 24 having a shape corresponding to the notch 23 provided in the scraping plate 20 is arranged. The backflow prevention panel 24 is rotatably supported by the pivot 22 so as to have a rotation fulcrum coaxial with the rotation fulcrum of the scraping plate 20. An inversion stopper 24a is provided on the front surface of the lower end of the backflow prevention panel 24.

In FIGS. 1 and 2, reference numeral 25 denotes
Is a cylinder for rotating the backflow prevention panel 24;
Denotes a cylinder for rotating the scraping plate 20.

FIG. 3 shows a hydraulic circuit diagram of the refuse loading apparatus of the present invention. The backflow prevention cylinder 25 includes solenoids a3, b
Hydraulic pump 28 via an electromagnetically operated switching valve 30 provided with
a and the tank 28, the solenoid b3 of the solenoid operated switching valve 30 is operated in the direction of reversing the backflow prevention panel 24, and the squeeze plate cylinder 26 is operated by the solenoids a2 and b2.
Pump 28a via an electromagnetic operation switching valve 31 provided with
And the tank 28, which is operated by the solenoid b2 of the solenoid operated switching valve 31 in the direction in which the scraping plate 20 is reversed, and the solenoid a2 of the solenoid operated switching valve 31 is used to scrape the scraping plate 20 and the backflow prevention panel 24. Activate The vertical movement cylinder 27 is connected to a hydraulic pump 28a tank 28 through an electromagnetically operated switching valve 32 having solenoids a4 and b4, and is operated in a direction to lower the loading plate 7 by the solenoid b4 of the electromagnetically operated switching valve 32. , Solenoid operated switching valve 32
The loading plate 7 is moved upward by the solenoid a4.

FIG. 4 shows an electric circuit diagram of the refuse loading apparatus of the present invention. The loading circuit 40 and the discharging circuit 41 are provided with the switching switch 4.
The loading circuit 40 is energized in the order of the solenoids b2, b3 and b4, a2, a4 by control means (not shown).

Next, the operation of the refuse loading apparatus of the present invention will be described with reference to FIG.
This will be described with reference to FIG.

Before the operation, the loading plate 7 and the scraping plate 20 are at the raised position shown in FIG. 5A, and the backflow prevention panel 24 is arranged in the notch 23 of the scraping plate 20. .

When the loading operation start switch is pressed, the scraping plate 2
The solenoid b2 of the electromagnetically operated switching valve 31 for inverting 0 is energized, the solenoid b2 is operated, and the hydraulic pump 28a
Then, the pressure oil is sent to the rake plate cylinder 26, and the rake plate cylinder 26 reverses the rake plate 20 from the dotted line position shown in FIG. Scraping plate 2
0 and the backflow prevention panel 24 operate separately, so that the backflow prevention panel 24 is in the position shown in FIG.
(B), the gap between the lower end of the backflow prevention panel and the upper end of the sump is set to be small even if the scraper plate 20 remains at the position shown by oblique lines and is inverted. Therefore, even if the scraping plate 20 is inverted, the dust housed in the body 2 and pressed by the scraping plate 20 flows back to the tailgate 3 side, and the dust thrown into the sump by the backflowed dust goes out of the tailgate. It is not extruded.

When the reversal of the scraping plate 20 is completed, a determination completion switch (not shown) is switched, and the solenoid b4 of the electromagnetically operated switching valve 32 is energized to lower the loading plate 7 and the scraping plate 20, so that the solenoid b4 is turned on. b4 is operated, and pressure oil is sent from the hydraulic pump 28a to the vertical cylinder 27,
The loading plate 7 is lowered from the position shown in FIG. 6A to the position shown in FIG. 6C through the position shown in FIG. The loading plate 7 includes a scraping plate 20 and a backflow prevention panel 24.
Is pivoted, so that the scraping plate 20 and the backflow prevention panel 24 are simultaneously lowered as the loading plate 7 is lowered.

Since the solenoid b3 of the solenoid operated switching valve 30 is also energized at the same time as the solenoid b4 of the solenoid operated switching valve 32 is energized, pressure oil is sent from the hydraulic pump 28a to the backflow prevention cylinder 25, By
The backflow prevention panel 24 is inverted in the direction of the inverted scraping plate 20 and is fitted and disposed in the notch 23 of the scraping plate 20. As described above, when the loading plate 7 is lowered, the backflow prevention panel 24 is inverted, so that the dust in the sump is not pushed out of the tailgate by the lowered backflow prevention panel 24.

When the backflow prevention panel 24 is accommodated in the notch 23 and the loading plate 7 is completely lowered, the lower limit switch (not shown) is switched. When the solenoid a2 is energized to operate the solenoid a2 and pressurized oil is sent from the hydraulic pump 28a to the rake plate cylinder 26, the rake plate cylinder 26 moves the rake plate 20 to the position shown in FIG. From FIG. 7
(A) position, and then from FIG. 7 (A) position to FIG.
(B) By moving to the position, the step of scraping dust in the sump is completed. When the lowering completion switch is switched, the electromagnetic operation switching valve 30 is not energized, so that the backflow prevention panel 24 moves in the same direction as the sweeping plate 20. As described above, since the squeezing plate 20 and the backflow prevention panel 24 move integrally during the squeezing operation, the backflow prevention panel 24 does not interfere with the squeezing of the squeezing plate 20. Further, since the backflow prevention panel 24 has a shape that fits into the notch 23 of the scraping plate 20, dust is not sandwiched between the backflow prevention panel 24 and the scraping plate 20.

When the scraping of the scraping plate 20 is completed, a scraping completion switch (not shown) is switched, and the solenoid a4 of the solenoid operated switching valve 32 is moved to raise the scraping plate 20.
, The solenoid a4 is activated, and the hydraulic pump 28
a to the vertical moving cylinder 27, and the vertical moving cylinder 27 moves the loading plate 7 from the position shown in FIG.
(B) Ascend to the position. Since the scraping plate 20 and the backflow prevention panel 24 are pivotally attached to the loading plate 7, the scraping plate 2
0 and the backflow prevention panel 24 also rise at the same time as the loading plate 7, and when the rise ends, the upper limit switch (not shown) is switched. As a result, the loading plate 7, the scraping plate 20, and the backflow prevention panel 24 are placed at the positions before the next loading operation.

FIG. 8 shows another embodiment of the present invention. The embodiment shown in FIG. 8 differs from the embodiment shown in FIG. 1 in that the operation mechanism of the backflow prevention panel 24 is configured by the link device 100.

The link device 100 has one end connected to the loading plate 7.
Tension rod 102 pivotally attached to a shaft 101 provided at
And a pin 10 at one end to the free end of the tension rod 102.
The compression rod 105 includes a compression rod 105 pivotally connected to the backflow prevention panel 24 at the other end thereof. The compression rod 105
It is formed from a tubular rod portion 106 and a rod portion 107 mounted in a nested relationship. Tubular rod part 10
6 has two through holes 108, 1 spaced apart in the axial direction.
09 is formed. A through-hole 110 is formed at the insertion-side end of the rod portion 107. In the embodiment shown in FIG. 8, the compression rod 105 is long by aligning the through hole 110 of the rod portion 107 with the through hole 109 of the cylindrical rod portion 106 and passing the fixing pin 111 through the through hole 109 and the through hole 110. Is set long.

The shaft 101 provided on the loading plate 7 and the shaft 104 provided on the backflow prevention panel 24 are connected by a tension spring 113, and the backflow prevention panel 24 is constantly urged upward. In addition, tailgate 3
When the rake plate 20 and the backflow prevention panel 24 reach the raised position, the rod stopper 112 with which the tension rod 102 of the link device 100 contacts is fixed. The rod stopper 112 abuts on the tension rod 102 when the scraping plate 20 is inverted, so that the backflow prevention panel 24 is not inverted and maintains its position when the scraping plate 20 is inverted.

The operation of the dust loading apparatus shown in FIG. 8 will be described with reference to FIGS. Before the operation, the loading plate 7
The rake plate 20 is in the raised position shown in FIG. 9A, and the backflow prevention panel 24 is disposed in the notch 23 of the rake plate 20.

When the loading operation start switch is pressed, the scraping plate cylinder 26 is operated, and the scraping plate 20 is reversed from the dotted line position shown in FIG. 9B to the solid line position in the direction shown by the arrow. At the stage where the scraping plate 20 is inverted, the backflow prevention panel 24 is
Since the tension rod 102 of the link device 100 is in contact with the rod stopper 112, the tension rod 102 remains at the position shown by the dotted line in FIG. 9B, and even if the scraping plate 20 is inverted, the backflow prevention panel 24 is maintained at that position. Backflow prevention panel 24
The interval between the lower end of the sump and the upper end of the sump 10 is set to be small.
Therefore, even if the scraping plate 20 is inverted, the dust housed in the body 2 and pressed by the scraping plate 20 flows back to the tailgate 3 side, and the dust thrown into the sump by the backflowed dust goes out of the tailgate. It is not extruded.

When the inversion of the scraping plate 20 is completed, the loading plate 7
From the position shown in FIG. 10A through the position shown in FIG.
(C) Although it descends to a position, since the scraping plate 20 and the backflow prevention panel 24 are pivotally attached to the loading plate 7, the loading plate 7
The scraping plate 20 and the backflow prevention panel 24
Also falls at the same time.

When the scraping plate 20 and the backflow prevention panel 24 start descending, the backflow prevention panel 24 is inverted in the direction of the scraping plate 20 inverted by the tension spring 113 and stored in the notch 23 of the scraping plate 20. Is done. As described above, the backflow prevention panel 24 is inverted when the loading plate 7 is lowered, so that the dust in the sump is not pushed out of the tailgate by the descending backflow prevention panel 24.

When the backflow prevention panel 24 is stored in the notch 23 of the scraping plate 20, the tension rod 102 of the link device 100 separates from the rod stopper 112 and continues the descending operation. When the lowering of the loading plate 7 is completed, the rake plate cylinder 26 is operated, and the rake plate 20 moves from the position shown in FIG. 10 (C) to the position shown in FIG. 11 (A), and then from the position shown in FIG. By moving to the position shown in FIG. 11 (b), the step of scraping dust in the sump 10 is completed, and the backflow prevention panel 24 and the scraping plate 2
0 moves in the same direction. Thus, the scraping plate 20
Since the backflow prevention panel 24 moves integrally during the scraping operation, the backflow prevention panel 24 does not interfere with the scraping of the scraping plate 20. In addition, since the backflow prevention panel 24 has a shape that fits into the notch 23 of the scraping plate 20, dust is not sandwiched between the backflow prevention panel 24 and the scraping plate 20.

When the scraping of the scraping plate 20 is completed, the loading plate 7
Rises from the position of FIG. 11 (C) to the position of FIG. 9 (A).
Since the scraping plate 20 and the backflow prevention panel 24 are pivotally attached to the loading plate 7, the scraping plate 20 and the backflow prevention panel 2
4 also rises at the same time as the loading plate 7, and when the lifting is completed, the loading plate 7, the scraping plate 20, and the backflow prevention panel 24 are placed at the positions before the next loading operation.

In the garbage loading apparatus of the present invention shown in FIG. 8, it has been found by experiments that in the case of bulky garbage such as home appliances and fittings, there is little backflow of the garbage at the loading stage. In such a case, it is desirable to stop the backflow prevention function. FIG. 12 shows an operation for stopping the backflow prevention function of the refuse loading apparatus of the present invention. In FIG. 12, the compression rod 105 of the link device 100 is formed by aligning the through hole 110 of the rod portion 107 with the through hole 108 of the cylindrical rod portion 106 and passing the fixing pin 111 through the through hole 108 and the through hole 110. It is set to a short length indicated by 12.

In the refuse loading apparatus shown in FIG. 8, the length of the compression rod 105 is shortened,
When the loading plate 7 and the scraping plate 20 are raised and the scraping plate 20 is inverted as shown in FIG. 13, the tension rod 102 of the link device 100 does not come into contact with the rod stopper 112, so that the backflow prevention panel 24 The backflow prevention panel 24 does not perform the original backflow prevention function.

In the above-described embodiment, a notch is provided at a portion above the toe on the toe side surface of the scraping plate, and the backflow prevention panel is rotatably arranged in this notch. May be fixedly arranged at a portion above the toe on the toe side of the scraping plate, or the backflow prevention panel may be integrally formed at a portion above the toe on the toe side of the scraping plate. The backflow prevention panel only needs to be sized so as to prevent dust from being pushed into the body from flowing back to the tailgate side.

[0033]

According to the present invention, there is provided a body mounted on a vehicle body for storing dust, a tailgate pivotally attached to a rear end of the body, a deflector disposed inside the tailgate, and ascending and descending along the deflector. It has a loading plate and a scraping plate pivotally attached to the lower portion of the loading plate, cuts out a part of the scraping plate, and in this notch, a backflow prevention panel having a rotation fulcrum at the lower portion of the loading plate. The backflow prevention panel is arranged so that when the scraping plate is turned over, it is positioned closer to the body than the front of the scraping plate, thereby preventing the dust pushed into the body from flowing back to the tailgate side. At the same time, an increase in weight due to the backflow prevention panel and a decrease in space at the front surface of the raking plate due to the installation of the backflow prevention panel are suppressed.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a part of a refuse loading device of a refuse collection vehicle according to the present invention.

FIG. 2 is a view taken along the line AA of FIG. 1;

FIG. 3 is a hydraulic circuit diagram of the refuse loading device of the refuse collection vehicle according to the present invention.

FIG. 4 is an electric circuit diagram of the refuse loading device of the refuse collection vehicle according to the present invention.

FIG. 5 is a view showing a reversing stage of the scraping plate of the dust loading device of the dust collection vehicle according to the present invention.

FIG. 6 is a view illustrating a lowering stage of a scraping plate of the dust loading device of the dust collection vehicle according to the present invention.

FIG. 7 is a diagram illustrating a scraping stage of a scraping plate of the dust loading device of the dust collection vehicle according to the present invention.

FIG. 8 is a diagram showing another embodiment of the refuse loading device of the refuse collection vehicle according to the present invention.

FIG. 9 is a view showing a reversing stage of a scraping plate of the dust loading device of the dust collection vehicle shown in FIG. 8;

FIG. 10 is a view showing a lowering stage of a scraping plate of the dust loading device of the dust collection vehicle shown in FIG. 8;

FIG. 11 is a diagram illustrating a scraping stage of a scraping plate of the dust loading device of the dust collection vehicle illustrated in FIG. 8;

FIG. 12 is a view showing another example of use of the dust loading device of the dust collection vehicle shown in FIG. 8;

FIG. 13 is a view showing a reversing stage of the scraping plate of the dust loading device of the dust collection vehicle shown in FIG. 12;

FIG. 14 is a cross-sectional view showing a part of a conventional refuse loading device of a refuse collection vehicle.

[Explanation of symbols]

 2 Body 3 Tail gate 5 Deflector 7 Loading plate 20 Scraping plate 22 Axis 23 Notch 24 Backflow prevention panel

Claims (4)

[Claims] 1. A body mounted on a vehicle body for storing dust, a tailgate pivotally attached to a rear end of the body, a deflector disposed inside the tailgate, and a loading plate that moves up and down along the deflector. In a refuse loading device for a refuse collection vehicle having a rake plate pivotally attached to a lower portion of a loading plate, a part of the rake plate is cut out, and a rotary fulcrum is provided in the notch at the lower portion of the loading plate. A backflow prevention panel having a backflow prevention panel, wherein the backflow prevention panel is located closer to the body than the front surface of the scraping plate when the scraping plate is inverted. 2. The refuse loading apparatus according to claim 1, wherein the backflow prevention panel is housed in the notch at the time of scraping and operates integrally with the scraping plate. 3. The refuse loading device according to claim 2, wherein the backflow prevention panel has a shape corresponding to the notch of the scraping plate. 4. The refuse loading apparatus according to claim 1, wherein said scraping plate and said backflow prevention panel are operated by separate operating devices.