JPS63282001A - Garbage loading device of garbage collector - Google Patents

Abstract

PURPOSE:To prevent the return of garbage in a sump side in a centerless type garbage collector by providing a lower link member composed of a telescopic cylinder interlocking with a vertically movable cylinder device for operating a vertically movable panel in such a way that the end of a rotary panel draws a circular arc rotation locus. CONSTITUTION:Lowering of a vertically movable panel 6 by a vertically movable cylinder device 14 makes the center of the pivot 7 of the panel 6 and the end of a rotary panel 8 draw a curvilinear locus and a curvilinear locus (b) respectively. In the next step, when the rotary panel 8 is normally rotated forward as shown by dashed lines through a garbage intake cylinder device 9, the end of the panel 8 also rotates drawing a curvilinear locus (a). Also in the rising movement of the panel by the second cylinder device 19 directly after the above mentioned movement, the end of the panel 8 draws a circular arc locus. This constitution leads to increase of pushing quantity for preventing the return of garbage to a sump side.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a garbage loading device for a garbage collection vehicle, which is usually referred to as a centerless type.

[Conventional technology]

Generally, inside a tailgate connected to the rear part of the garbage storage box, there is a vertically movable panel that is supported via an upper link member and a lower link member so as to be able to move vertically inside the tailgate, and a lower end edge of this vertically movable panel. 2. Description of the Related Art Garbage collection vehicles are known that include a garbage loading device that includes a rotating panel that is rotatably supported. This type of garbage loading device is usually called a centerless loading device. A sump is formed at the bottom of the tailgate to temporarily store garbage, and the garbage thrown into the top of the sump is pushed into the garbage storage box by the cooperation of a vertically moving panel and a rotating panel. It is configured.

Conventionally, as a centerless type loading device, as mentioned above, a vertically movable panel is moved up and down via an upper link member and a lower link member (for example, Japanese Patent Laid-Open No. 55-52
Various devices have been proposed, including one in which a vertically movable panel is moved up and down along a guide groove formed in a side plate of a tailgate (see, for example, Japanese Patent Laid-Open No. 58-220002).

[Problem that the invention seeks to solve]

However, in both cases, due to a mechanical problem when rotating the rotating panel to push the garbage thrown onto the top of the sump into the garbage storage box, the tip of the rotating panel moves the trajectory toward the garbage storage box. The problem was that I couldn't get close to it. Therefore, there was a problem in that the amount of garbage pushed in could not be increased, and it was impossible to prevent the garbage from returning to the sump side.

By the way, garbage collection vehicles are known that are equipped with a rotating panel that rotates via a rotating shaft installed horizontally in the lower area of the tailgate.In this rotating shaft type garbage loading device, the tip of the rotating panel draws a trajectory However, there are disadvantages in that long pieces of garbage are obstructed by the rotating shaft, reducing loading efficiency and complicating the structure.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to solve the problems of the above-mentioned conventional technology, and to bring the trajectory drawn by the tip of the rotating panel closer to the garbage storage box side, almost in the same way as the rotating shaft type garbage loading device. To provide a centerless type garbage loading device which can increase the amount of garbage pushed in and prevent the phenomenon of garbage returning to the sump side.

[Means for solving problems]

In order to achieve the above object, the present invention provides a vertically movable panel that is supported inside a tailgate connected to the rear part of a garbage storage box via an upper link member and a lower link member so as to be able to move vertically inside the tailgate. and a rotating panel rotatably supported on the lower edge of the vertically movable panel, in which at least the lower link member of the upper link member and the lower link member The member is composed of a telescoping cylinder device interlocking with a vertical cylinder device that moves the vertically movable panel up and down, and by the expansion and contraction of the telescoping cylinder device, the pivot point between the cylinder device and the vertical movable panel follows an elliptical trajectory. The present invention is characterized in that it can be controlled so that the tip of the rotating panel draws a substantially arc-shaped rotation locus.

[For production]

According to the present invention, when moving the vertically movable panel up and down, the telescopic cylinder device that is linked to the vertically movable cylinder device is controlled to expand and contract, and the pivot point between the cylinder device and the vertically movable panel draws an elliptical trajectory. , and the tip of the rotating panel is controlled so as to draw a substantially arc-shaped rotation locus.

【Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, one embodiment of a garbage loading device for a garbage collection vehicle according to the present invention will be described with reference to the accompanying drawings.

In FIG. 1, reference numeral 1 indicates a tailgate connected to the rear of a garbage storage box (not shown). A sump 2 for temporarily storing garbage is formed at the bottom of the tailgate 1, and a front wall 2a is formed at the front of the sump 2, and a rear wall 2b is formed at the rear. Garbage is introduced into the upper surface of the sump 2 through a garbage inlet 3 formed on the back surface of the tailgate 1.

A vertically movable panel 6 is supported inside the tailgate 1 so as to be able to move up and down from the upper front of the tailgate 1 toward the rear lower side. A rotary panel 8 is pivotally mounted therebetween. This rotating panel 8 is configured to be rotated around a pivot shaft 7 via a telescoping cylinder device 9, and the rear end of a cylinder 9a of this cylinder device 9 is connected to a piston at an upper end fixed portion of the vertically movable panel 6. The tips of the rods 9b are connected to the fixed portions of the rear surface of the rotating panel 8 with pins 10 and 11, respectively. These vertically movable panel 6 and rotary panel 8 constitute a garbage loading device.

The vertically movable panel 6 is movably supported inside the tailgate 1 via an upper link member 12 and a lower link member 13, as shown in FIGS. 1 to 3. Also,
The vertically movable panel 6 is displaced via a vertically movable cylinder device 14, and the rear end of a cylinder 14a of this cylinder device 14 is connected to the front upper end fixed portion of the tailgate side plate 1a via a pin 15, and the tip of the piston rod 14b is It is connected to the pivot shaft 7 mentioned above. The upper link member 12 has one end pivotally connected to the fixing portion of the side plate 1a of the tailgate 1 via a pin 16, and the other end to the upper end of the vertically movable panel 6 via a pin 17.

Further, according to the present invention, the lower link member 13 is composed of two telescopic cylinder devices, each of the first cylinder device 18 and the second cylinder device 19, as is clear from FIG. Cylinder 1 of first cylinder device 18
The rear end of 8a is connected to the front fixed part of both side plates 1a of the tailgate 1 via a pin 20, and the piston rod 18b
The tip is connected to the pivot shaft 7 mentioned above. Further, the rear end of the cylinder 19a of the second cylinder device 19 is connected to the rear fixed portion of both side plates 1a of the tailgate 1 via a pin 21,
The tip of the piston rod 19b is connected to the pivot shaft 7. Here, the first and second cylinder devices 18 and 19
is supported so as to be able to swing up and down at equal angles with respect to the straight line connecting the pins 20 and 21, and the vertically movable panel 6
The pivot shaft 7 at the highest raised position and each pin 20.
21 are set to be approximately equal to the vertical movement stroke of the vertical movement panel 6.

FIG. 5 is a hydraulic circuit diagram of the garbage loading device according to the present invention, in which the first and second cylinder devices 18 and 19 are configured to be interlocked with the vertically movable cylinder device 14. As is clear from the figure, the base side chambers 18c of the first and second cylinder devices 18.19.

19c is connected to the middle of the pipe line 25, 26 to the vertical movement cylinder device 14, and the rod side spaces 18d and 119d are respectively opened to the oil tank T side.

Further, a sequence valve 27 and a check valve 28 are connected in parallel to the conduit 25. When pressure oil is supplied to the pipe line 25, the vertically movable panel 6 descends, and when pressure oil is supplied to the pipe line 26, the vertically movable panel 6 rises.

Next, the operation of the garbage loading device according to this embodiment will be explained.

In FIG. 1, when garbage is introduced into the upper surface of the sump 2 through the garbage inlet 3, the rotary panel 8 is turned backward through the scraping cylinder device 9 as shown by the dashed line in the figure. Next, the vertically movable panel 6 is lowered via the vertically movable cylinder device 14 as shown in FIG. At this time, in FIG. 5, the solenoid valve V is switched to the left position in the figure. The pressure oil first flows into the base side chamber 18c of the first cylinder device 18 through the pipe line 25, and causes the piston rod 18b to extend. Thereafter, when the pressure in the pipe line 25 increases, the sequence valve 27 is activated, the pressure oil flows into the base side chamber of the vertically movable cylinder device 14, and the vertically movable panel 6 is lowered as described above. Here, since the pipe line 26 is open to the oil tank T, the second cylinder device 19 is free.

Therefore, the pivot shaft 7 of the vertically movable panel 6 when descending
The center point of is marked j? in Figure 1. The tip of the rotary panel 8 draws a curved locus indicated by a in FIG. 2. Next, the rotating panel 8 is rotated forward in the normal direction as shown by the dashed line in the drawing via the scraping cylinder device 9, and at this time, the tip of the rotating panel 8 follows the curved trajectory shown in the drawing. draw. Next, the vertically movable panel 6 is raised via the vertically movable cylinder device 14 through the state shown in FIG. 3, as shown in FIG. At this time, in FIG. 5, the solenoid valve V is switched to the right position in the figure. The pressure oil simultaneously flows into the rod side chamber of the vertically movable cylinder device 14 and the base side chamber 19c of the second cylinder device 19 through the pipe line 26, and simultaneously raises the vertically movable panel 6.
The piston rod 19b is extended. Here, conduit 25
is released to the oil link T, so the first cylinder device 18 is free. Therefore, the center point of the pivot shaft 7 of the vertically movable panel 6 during the upward movement traces a curved trajectory indicated by the symbol N2 in FIG. 1, and the tip of the rotating panel 8 traces a curved trajectory indicated by the symbol C in FIG. 3. draw

By configuring as described above, according to this embodiment,
The locus I11.12 drawn by the center point of the pivot shaft 7 is shaped like an ellipse,
In addition, the trajectories a, b, and c drawn by the tips of the rotary panel 8 can be made into almost circular arc shapes, making it possible to increase the compression force on the garbage and improve the loading efficiency, and moreover, to efficiently move large garbage. It can be scraped in. In addition, during the upward stroke of the vertically movable panel 6, the reaction force of the garbage acting on the rotating panel 8 acts on the second cylinder device 19, but the second cylinder device 19 is designed to be able to withstand this reaction force sufficiently.
It is important to increase the strength of At this time, the second cylinder device 19 should be replaced with a sliding square tube or the like (not shown).
It is effective to have a configuration in which the reaction force acting on the second cylinder device 19 is shared between the cylinder device and the square tube.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, at least the lower link member of the upper link member and the lower link member supporting the vertically movable panel is constituted by a telescoping cylinder device, and rotates by the expansion and contraction of the telescoping cylinder device. Since the tip of the panel can be controlled to draw a rotational trajectory in the shape of an approximately arc, the amount of garbage pushed into the garbage storage box can be increased and the phenomenon of garbage returning to the sump side can be prevented, etc. .

[Brief explanation of the drawing]

FIG. 1 is a side view showing an embodiment of the garbage loading device according to the present invention, FIGS. 2 and 3 are side views showing a state in which the vertically movable panel and the rotary panel are displaced, and FIG. 4 is the side view showing an embodiment of the garbage loading device according to the present invention. A side view of the exterior showing an example of a garbage loading device by M5.
The figure is a hydraulic circuit diagram of the garbage loading device according to the present invention. 1...Tailgate, 2...Sump, 3...Garbage inlet, 6...Vertical movement panel, 8...Rotating panel,
12... Upper link member, 13... Lower link member, 18... First cylinder device, 19... Second cylinder device, a, b, C... Trajectory of the tip of the rotating panel. Applicant's agent Sato - Yumura 1 mouth 2 mouths Kuchijima 3 mouths

Claims (1)

[Claims] 1. A vertically movable panel supported via an upper link member and a lower link member so as to be vertically movable inside the tailgate connected to the rear part of the garbage storage box; In the garbage collection vehicle equipped with a garbage loading device configured with a rotary panel rotatably supported on a lower edge of a movable panel, at least the lower link member of the upper link member and the lower link member is connected to the lower link member. comprising a telescoping cylinder device interlocking with a vertically movable cylinder device for vertically moving the vertically movable panel, so that the pivot point between the cylinder device and the vertically movable panel draws an elliptical trajectory due to the expansion and contraction of the telescoping cylinder device, and A garbage loading device for a garbage collection vehicle, characterized in that the tip of the rotary panel can be controlled so as to draw a rotation locus in a substantially arc shape. 2. The lower link member includes a first cylinder device that supports the vertically movable panel from the front region of the tailgate, and a second cylinder device that supports the vertically movable panel from the rear region of the tailgate, and the vertically movable panel 2. The garbage loading device for a garbage collection vehicle according to claim 1, wherein the first cylinder device is operated during the downward stroke and the second cylinder device is operated during the upward stroke.