JPS5935450Y2 - Garbage loading device for garbage collection vehicle - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a garbage loading device for a garbage collection vehicle.

As is known, the garbage loading device of the garbage collection vehicle has a tailgate pivotally connected to the vehicle body adjacent to an opening in the vehicle body,
A deflector, scraping panel, etc. are installed inside this tailgate.

The scraping panel performs a reversing operation in which it rotates upward in a direction away from the vehicle body opening, prior to the scraping operation, in order to scrape the garbage dumped into the tailgate into the vehicle body.

In conventional garbage loading devices, a vehicle body opening is partially opened in connection with this reversing movement of the raking panel, and through this open portion, the debris forced into the vehicle body flows back onto the tailgate sump. However, there is also a problem in that the dust in the sump is thrown out of the tailgate by the reversing operation of the scraping panel.

On the other hand, with conventional garbage loading devices, when opening the tailgate to discharge garbage after collecting it inside the vehicle, a dedicated dump cylinder for opening the tailgate is provided, or another cylinder is connected to the tailgate. In order to enable it to be used also for opening, it was necessary to adopt a method of providing a relatively complicated mechanism.

In view of these problems, the present invention uses a deep-pushing cylinder device to displace the deflector and the scraping panel inward to the vehicle body, thereby pushing the debris stored in the vehicle body deeply into the vehicle body and transferring it to the sump. In addition to preventing the backflow of dust, by inverting the scraping panel while the deflector and scraping panel are slightly inside the vehicle body from inside the tailgate, we are trying to prevent the dust in the sump from being thrown outward when the deflector and scraping panel are inverted. Furthermore, by simply providing a very simple protrusion on the inside of the side plate of the tailgate, the tailgate can be opened by also serving as a vertical movement cylinder device for the scraping panel.

Embodiments of the present invention will be described below with reference to the drawings.

1 and 2 show the state of the garbage loading device of the present invention before starting the garbage loading operation.

In addition, Fig. 1 is a partially cutaway view of the left side of the garbage loading device with respect to the forward direction of the garbage collection vehicle, and Fig. 2 is a longitudinal cross-sectional view of the left side tailgate side plate, etc. FIG.

In these figures, reference numeral 1 denotes a vehicle body constituting a cargo box of a garbage collection vehicle, and a tailgate 2 is attached adjacent to an opening at the rear of the vehicle body as is well known.

The tailgate 2 is composed of a pair of side plates 2a that face each other in the horizontal direction, a sump 2b that constitutes a bottom plate that connects the side plates, and beams 2C1, 2C2, 2C3, etc. that integrally connect the side plates. There is.

The tailgate 2 is pivotally connected by a horizontal pivot pin 5 to a bracket 4 fixed near both ends of a channel member 3 fixed laterally above the rear portion of the vehicle body 1.

The tailgate 2 is pivotally attached using the pivot pin 5 by inserting the pivot pin 5 through a mounting piece 2d fixed to the upper end of the tailgate side plate 2a.

Another pivot pin 6 is supported on the bracket 4, and upper ends 8a of side plate portions 8 fixed to both lateral ends of the deflector 7 are pivoted to this pivot pin 6.

The deflector 7 is a rectangular hollow panel that spans the entire width of the tailgate 2 in the lateral direction, and has an extension 7 at the upper end.
It has a.

A pair of groove-shaped guide rails 9 are provided on the inner surface of each side plate portion 8 in parallel with an interval in the forward and backward direction of the traveling direction, and a guide groove is formed in the vertical direction between these guide rails 9. ing.

Projections 10b (shown only in FIG. 1) fixed to the side frames 10a on both sides of the panel-shaped slider 10 are fitted into the guide grooves so as to be slidable in the vertical direction.

The upper side of the scraping panel 12 is pivotally attached to the lower side of the slider 10 by a pivot pin 11.

A bracket 13 is fixed to the rear surface of this scraping panel 12, and a bracket 14 is also fixed to the upper part of the rear surface of the slider 10.
It is pivoted to 4.

The lower end of the piston rod 15b of this cylinder device 15 is pivotally connected to the bracket 13 by a pin 17.

19 is a vertically moving cylinder device, and the cylinder 19
The upper end of a is supported by the aforementioned pivot pin 6 that pivots the deflector 7, and its piston rod 19
The lower end of b is pivoted on a pivot pin 11 between the slider 10 and the scraping panel 12.

The vertically moving cylinder device 19 is housed inside the side frame 10a of the slider 10.

20 is a pushing cylinder device, and the cylinder 20
The rear end of a is the beam 2 near the rearmost part of the tailgate 2.
It is pivotally connected to a racket 22 fixed to C2 by a pin 21, and the tip of the piston rod 20b is pivotally connected to the aforementioned pivot pin 11.

Although the above-mentioned scraping cylinder device 15 is provided only at the center of the width of the slider 10, the cylinder device 19.
20 are provided on both sides along each tailgate side plate 2a.

The front end of the sump 2b of the tailgate 2 is appropriately supported on the floor 1a of the vehicle body 1.

A block-shaped abutting protrusion 24 is integrally provided on the inner surface of the tailgate side plate 2a on each side.

As shown in FIG. 1, this protrusion 24 protrudes inward to such an extent that it may interfere with protrusions 11a present at both ends of the pivot pin 11 on the lower side of the slider 10.

In other words, the push-in panel 12 and the push-in cylinder device 2 move near the protrusion 24 as described below.
0, the protrusion 24 does not protrude to the extent that it interferes with members such as the slider 10, but of all the members that move near the protrusion 24 inside both tailgate side plates 2a, it is the most The protrusion 24 protrudes inward so as to interfere with only the pivot pin protrusion 11a that protrudes outward.

Note that the protrusion 24 shown in FIG. 2 is a protrusion fixed to the cut out front tailgate side plate 2a.

The protrusion 24 is provided at a position considerably below the tailgate side plate 2a.

Next, the operation of the garbage loading device described above will be explained.

In the state shown in FIGS. 1 and 2, which is the state before the start of the loading operation, the pushing cylinder device 20 is extended, and the deflector 7, slider 10, scraping panel 12, etc. are connected to the pivot pin 6.
It has moved forward to a position where it is slightly inside the vehicle body 1.

Therefore, the dust inside the vehicle body is pushed deeper into the vehicle body, making it difficult for it to flow back toward the tailgate 2.

In this state, the reversing operation of the scraping panel 12 is started.

For this purpose, the raking cylinder device 15 is retracted.

As a result, the scraping panel 12 receives a force to rotate counterclockwise around the pivot pin 11 via the pin 17 and the bracket 13, and swings as shown by arrow A in FIG. 2 to the position shown in FIG. 3. Take.

In this manner, since the scraping panel 12 is reversed within the vehicle body, unlike conventional panels that are reversed within the tailgate, the scraping panel 12 is not blown away from the inside of the tailgate when the vehicle is reversed.

Even if there is a splash of dust, it will only fall onto the tailgate sump 2b.

Next, the push-in cylinder device 20 is retracted, so that the inverted push-in panel 12 is moved by arrow B in FIG.
Displaced in the direction shown by .

This displacement is effected by rotation of the deflector 7 about the pivot pin 6.

The final state of contraction of the push-in cylinder device 20 is as shown in FIG. 4, and the push-in cylinder device 20 is not completely deflated.

This partially contracted state is locked and the pushing cylinder device 2
No further contraction of 0 is prevented from occurring.

The reason why the push cylinder device 20 is not completely deflated will be described later.

In the position of FIG. 4, the vertical cylinder device 19 is extended.

As a result, as the push-in cylinder device 20 rotates downward around the pin 21, the push-in panel 12 descends as shown by arrow C in FIG. 4 and assumes the position shown in FIG.

The locus of the pivot pin 11 during this descent is shown in Figure 4.
As shown in b, the protrusion 11 of the pivot pin 11
A will avoid the protrusion 24 and pass through.

Therefore, the protrusion 11 a of the pivot pin 11 and the protrusion 24
Lowering of all members is accomplished without interference with the

The reason why there is no interference between the protrusion 11a and the protrusion 24 is that the downward locus of the pivot pin 11 is shifted to the left side of the protrusion 24 in FIG. This is because it was made so.

In the position of FIG. 5, a raking operation is performed by extending the raking cylinder device 15.

That is, as shown by the arrow in FIG. Reach the position shown.

From this position, the vertical cylinder device 19 starts to contract, and the scraping panel 12 moves up as shown by arrow E in Figure 6 while scraping up the dust along the top surface of the sump 2b, and reaches the position shown in Figure 7. reach

When the pushing cylinder device 20 is extended in this state, the deflector 7 and the scraping panel 12 move forward in the direction of the arrow F into the vehicle body while pushing the dirt, and the dirt is pushed deeply, so that the above-mentioned effect can be obtained.

In order to open the tailgate 2 to discharge the dust collected inside the vehicle body, the pushing cylinder device 20 in the partially retracted state shown in FIG.
2 need not be in the inverted position shown in FIG. 4), then the vertical cylinder device 19 is extended.

As a result, the push-in cylinder device 20 is rotated counterclockwise around the pivot pin 21 that pivotally supports it and is lowered, and at the same time, the pivot pin 11 is also lowered.

On the other hand, the aforementioned protrusion 24 is provided so as to be located on the downward trajectory of the pivot pin 11 when the push-in cylinder device 20 rotates downward in a fully retracted state, and therefore the protrusion of the pivot pin 11 11a comes into contact with the contact surface of the protrusion 24 during its descent, as shown in FIG. 9, and is prevented from further descending with respect to the protrusion.

In order to ensure contact with the protrusion 11a, the protrusion 24
The abutment surface is an inclined surface as shown in the figure.

After the protrusion 11 a and the protrusion 24 come into contact with each other, the vertically moving cylinder device 19 further extends, so that the extension force of the vertically moving cylinder device is transmitted to the tailgate 2 via the protrusion 24 .

The force acting on the protrusion 24 due to this elongation has a component directed diagonally upward to the right (in FIG. 9) with respect to the line connecting the pivot 5 of the tailgate 2 and the protrusion 24, and therefore A counterclockwise moment acts around 5, and the tailgate is moved by the vertical movement cylinder device 19.
10, it is rotated and opened as shown by arrow G in FIG.

As described above, the push-in cylinder device 20 is configured to be able to achieve a predetermined partially contracted state and a fully contracted state, and the downward trajectory of the protrusion 11a attached to the slider 10 is determined by the difference in the contracted state of the push-in cylinder device. By making the projections 24 different from each other, the protrusion 24 can be attached to the tailgate 2 on a specific downward trajectory of the protrusion 11a (in the embodiment, the downward trajectory of the protrusion 11a when the push-in cylinder device 20 is in a fully retracted state). With this simple configuration, the tailgate can be opened using the vertically movable cylinder device 19.

Since the protrusion 24 does not interfere with the protrusion 11a as long as it moves under normal operating conditions, it does not pose any hindrance to the normal dust scraping operation.

In addition, in the embodiment described above, the protrusion 24 was provided on the trajectory of the protrusion 11a when the push-in cylinder device is contracted.
It is also possible to provide the protrusion 24 on the locus during partial contraction so that during the raking operation, the downward movement of the pushing cylinder device starts when it is in the fully retracted state.

As described above, in the present invention, after the deflector and the scraping panel are swung deeply into the car body by the pushing cylinder device to push the garbage, the scraping panel is reversed. It is possible to prevent dust from flowing backwards in the tailgate, and prevent it from being thrown out when the dust scraping panel inside the tailgate is reversed. Moreover, by simply installing a very simple protrusion on the side plate of the tailgate, the vertically moving cylinder device can be attached to the tailgate. There is also the advantage that it can be used for opening the gate.

[Brief explanation of drawings]

Fig. 1 is a perspective view of an embodiment of the present invention, Fig. 2 is a schematic vertical sectional view thereof, Figs. 3 to 8 are sequential views showing the operation of the device shown in Fig. 2, and Figs. 9 and 10. 2A and 2B are diagrams sequentially showing the tailgate opening operation. 1...Vehicle body, 2...Tailgate, 2
b... Sump, 4... Bracket, 5
, 6... Pivot pin, 7... Deflector, 9... Guide rail, 10... Slider, 11... Pivot pin, 11 a...
・Protruding part, 12... Scratching panel, 15...
...Pushing cylinder, 19...Vertical cylinder device, 20...Pushing cylinder device, 2
4... Protrusion.

Claims (1)

[Claims for Utility Model Registration] 1. A tailgate whose upper end is pivotally connected to the vehicle body adjacent to the vehicle body opening, and which is suspended by a lateral pivot above the vehicle body opening at the boundary between the tailgate and the vehicle body opening. A panel-shaped deflector that can swing toward the inside of the tailgate;
a panel-shaped slider supported by the deflector via a guide rail so as to be able to freely slide up and down along the tailgate side surface of the deflector, and a vertically moving cylinder device that slides the slider up and down with respect to the deflector; A scraping panel whose upper edge is rotatably supported by a lateral pivot on the lower edge of the slider, and this scraping panel is connected to the scraping panel in a hanging manner by swinging around the lateral pivot that supports it. a retractable push-in cylinder device whose tip end is pivoted to the lateral pivot between the slider and the shovel panel, and whose base end is pivoted to the tailgate at a position away from the vehicle body opening; means for locking the push-in cylinder device in a partially retracted state between a fully extended state and a fully retracted state; a projection projecting laterally from a side of the slider; and an abutment protrusion protruding from the inside of the tailgate side plate so as to be on one of two different movement trajectories of the protrusion when the protrusion swings downward in the state. Garbage loading device. 2. The garbage loading device according to claim 1, wherein the protruding portion is an extension of both ends of a lateral pivot that pivots the scraping panel along the lower edge of the slider.