JP4617030B2 - Loading control method of garbage truck - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
The present invention relates to a method for controlling a series of loading operations performed by a rotating plate and a pushing plate of a garbage truck, and more particularly, to a loading control method when the pushing plate receives a large reaction force from the dust.
[0002]
[Prior art]
As shown in FIG. 4, the garbage truck 1 is provided with a rotating plate 3 and a pushing plate 4 in the tailgate 2, and the dust G put into the tailgate 2 is collected by the rotating plate 3. After being scraped up to the entrance of the storage box 5, it is pushed into the dust box 5 by the pushing plate 4, and one cycle of the loading operation by the rotating plate 3 and the pushing plate 4 is completed. By the way, the completion of the pushing operation into the dust container 5 by the pushing plate 4 described above is detected by a pushing completion switch 6 constituted by a proximity switch or the like. That is, as shown in FIG. 5A, the detection plate 8 is attached to the tip of the arm 7 that is pivotally attached to the rotation shaft of the push plate 4, and the push completion switch 6 is arranged near the detection plate 8. When the push-in plate 4 rotates in the direction of the arrow in the figure and the push-in operation by the push-in plate 4 is completed, the detection plate 8 comes out of the push-in complete switch 6 operation region (the region indicated by the dotted line). Since the push-in completion switch 6 is turned on, the push-in completion switch 6 detects the completion of the push-in operation.
[0003]
[Problems to be solved by the invention]
However, when the dust container is almost full of dust, the pushing plate receives a reaction force from the dust and is pushed back. In some cases, the rotating plate and the pushing plate may interfere with each other. At this time, as shown in FIG. 5B, the push plate is rotated in the direction of the arrow, and the detection plate enters the operation area of the push completion switch (area indicated by the dotted line), and the push completion switch is in the OFF state. become. As a countermeasure, as shown in the time chart of FIG. 6, (at this time, pushing completion switch is turned ON) pushing operation is completed push plate after the the start of the first predetermined time T ₁ by the rotation plate In the meantime, when the push-in switch is turned off (indicated by part P), the push-in plate is re-pressed (indicated by part Q) to turn on the push-in complete switch (indicated by part Q). It is in the ON state. However, the re-pressing operation in this case is completed again at the same position as the position when the pressing plate is first pressed and the push-in completion switch is turned on. _The pushing plate will be pushed back into ₁ , and in some cases, the pushing operation may continue many times. In the figure, the case where the next cycle is entered by re-pressing is shown.
[0004]
In addition, when the dust container is full, the reaction force that the push plate receives from the dust becomes large, so that the push speed of the push plate becomes slower than when there is little dust. As a result, when the pushing speed is high, the pushing plate vigorously swings in the direction of the arrow in FIG. 5 (A), so that even if the pushing completion switch is turned on, the pushing plate does not stop immediately. The gap S increases, but when the push-in speed is low, the push-in completion switch stops immediately and the gap S in the figure is reduced. For this reason, the push-in completion switch is turned off only by being slightly returned by receiving the reaction force from the dust (for example, (B) in the same figure). Therefore, if the push-in speed becomes slow, a re-push-in operation tends to be required. There is a problem that becomes stronger.
[0005]
It is an object of the present invention to eliminate wasteful re-pushing operation and re-pushing operation with respect to dust, or reduce these operations to realize a series of efficient loading operations, which can realize efficient collection operation. It is to provide a method.
[0006]
[Means for Solving the Problems]
In order to solve the above-described problems, a method for controlling the loading of a garbage truck according to claim 1 of the present invention loads the dust scraped up by a rotating plate in the tailgate by pushing it into a dust container with a pushing plate. In the control method, when the push-in completion switch detects the completion of the push-in operation by the push-in plate and turns on, the push-in plate is pushed back within the first predetermined time and turned off. The re-pushing operation is performed continuously for the second predetermined time after the push-in completion switch is turned ON, and it is wasted by making the re-push deeper than the first push. A series of efficient loading operations is realized by eliminating the need for re-pressing operation or reducing the re-pressing operation.
[0007]
According to a second aspect of the present invention, there is provided a loading control method for a garbage collection vehicle in which the dust scraped up by the rotating plate in the tailgate is pushed into the dust container box by the pushing plate and loaded. Measure the push-in movement time from the return completion position to the push-in completion position, and if this measurement time is longer than the third predetermined time, after pushing the push-in completion switch ON, , Continuously for a fourth predetermined time, and by estimating the amount of dust in the dust storage box from the measurement of the pushing movement time and performing the pushing operation, the pushing plate can be restored. A series of efficient loading operations is realized by eliminating the need for pushing operations or reducing unnecessary pushing operations.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment according to a loading control method for a garbage truck according to the present invention will be described with reference to FIGS.
First, a control method for making the re-pressing deeper than the initial pressing will be described with reference to FIGS. In FIG. 1, the same members as those in FIG. 4 are denoted by the same reference numerals, and the description thereof is omitted.
At the start of the loading cycle, as shown in FIG. 1, the rotating plate 3 is stopped at the rotation start position A. This is detected by the forward rotation completion switch 10 and the completion of the pushing operation by the pushing plate 4 is pushed. Detected by the completion switch 6, the rotating plate 3 starts to rotate forward by a hydraulic motor (not shown) based on the detected information, and the rotating plate 3 starts to scrape up dust. When the rotating plate 3 rotates forward and reaches the position shown in FIG. 5B, the switch 11 is operated, and a hydraulic cylinder (not shown) swings the pushing plate 4 backward based on a signal from the switch 11. Move. Thereby, the pushing operation of the pushing plate 4 is prepared. When the pushing plate 4 moves backward and reaches the position shown in FIG. 5C, the return completion switch 12 is operated, and the pushing plate 4 is held at this position based on a signal from the return completion switch 12. However, the normal rotation of the rotating plate 3 described above is continued, and thus the dust is scraped up. When the rotary plate 3 rotates forward and reaches the position shown in FIG. 4D, that is, the rotation start position A, the forward rotation completion switch 10 detects this and based on the signal from the forward rotation completion switch 10. The hydraulic cylinder causes the pushing plate 4 to swing forward as shown in FIG. Thereby, the dust is pushed into the dust container 5.
[0009]
However, push-completion switch 6 is pushed plate push completion switch 6 detects the completion of the pushing operation to the first between the predetermined time T ₁ by 4 if the ON state, by forward rotation plate 3 As shown in the time chart of FIG. 2A, after the pushing operation of the pushing plate is completed (the pushing completion switch is turned on at this time), the first cycle is started. In this control method, when the push-in completion switch 6 is turned off within a predetermined time T ₁ (indicated by P part), the re-pushing operation of the push-in plate 4 is performed after the push-in completion switch 6 is turned on. Further, in order to continue the operation for the second predetermined time α, the operation is performed by adding + α hours from the conventional re-pressing operation time (indicated by R portion), and the re-pressing is made deeper than the initial pressing. ing. As a result, as shown in FIG. 2A, the next silly can be entered without requiring re-pushing operation, and a series of efficient loading operations can be realized. Note that FIG. 2B is a time chart of the conventional loading operation described in FIG. 6 and is shown again for comparison with FIG. In FIG. 2 and FIG. 6, but push completion switch 6 to the first predetermined time T ₁ is not allowed to immediately re-pushing operation when turned OFF, if the first predetermined time T within ₁ As soon as the push-in completion switch 6 is turned off, the re-pushing operation may be started.
[0010]
Next, a control method for measuring the pushing movement time of the pushing plate 4 and estimating the amount of dust in the dust container from the measured time to perform the pushing operation will be described. In the description, referring to FIGS. 1 and 3, only the differences from the above-described control method will be described.
In the loading cycle according to the present control method, the operations from FIGS. 1A to 1D are the same as those of the loading cycle according to the above-described control method, but from FIG. The place where (A) is passed through is different. That is, the pushing movement time of the pushing plate 4 from the return completion position (position where the return completion switch 12 is turned on) to the pushing completion position (position where the push completion switch 6 is turned on) is measured. Specifically, for example, the time during which the push signal of the push plate 4 is output is measured on a program. When the measured time is longer than the third predetermined time T _3, the push signal of pushing plate 4, push after completing switch 6 is turned ON, and continues during further the fourth predetermined time T ₄ Output. In other words, the pushing operation of the pushing plate 4 is further continued for a _fourth predetermined time T4 and deeply pushed (see FIG. 3). Thereby, the re-pressing operation of the pressing plate 4 becomes unnecessary, or the unnecessary re-pressing operation is reduced, and an efficient series of loading operations can be realized. FIG. 3B is a time chart according to the conventional control method, and the push signal of the push plate 4 stops as soon as the push completion switch 6 is turned on.
[0011]
【The invention's effect】
According to the loading control method of the refuse collection vehicle of the present invention, it is possible to eliminate the needless re-pressing operation and re-pressing operation on the dust, or to reduce these operations to realize a series of efficient loading operations. Can do.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of a loading operation using a loading control method according to an embodiment of the present invention.
FIG. 2 is a time chart of a loading operation using this loading control method.
FIG. 3 is a time chart of a loading operation using a loading control method different from FIG.
FIG. 4 is a schematic configuration diagram of a garbage truck.
FIG. 5 is an operation explanatory view of the pushing plate of FIG. 4;
FIG. 6 is a time chart of a loading operation using a conventional loading control method.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Garbage collection vehicle 2 Tailgate 3 Rotating plate 4 Pushing plate 5 Dust container 6 Pushing completion switch 12 Return completion switch

Claims (2)

In the control method in which the dust scraped up by the rotating plate in the tailgate is pushed into the dust storage box by the pushing plate and loaded, after the pushing completion switch detects that the pushing operation by the pushing plate is completed and is turned on. When the push-in plate is turned off within the first predetermined time, the push-in operation of the push-in plate is continuously performed for the second predetermined time after the push-in completion switch is turned on. A garbage collection vehicle loading control method characterized by the above. In the control method in which the dust scraped up by the rotating plate in the tailgate is pushed into the dust containing box by the pushing plate and loaded, the rotational movement time of the pushing plate from the return completion position to the pushing completion position is measured, When the measurement time is longer than the third predetermined time, the pressing operation of the pressing plate is continuously performed for the fourth predetermined time after the pressing completion switch is turned on. A loading control method for a garbage collection vehicle.

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