JPH0435283Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a garbage collection vehicle that efficiently discharges garbage remaining in a tailgate.

[Conventional technology]

As shown in FIG. 7, a tailgate 6 that closes the opening 4 is attached to the rear opening 4 of the garbage storage box 3 in a rotating direction in the vertical direction.
A garbage collection vehicle equipped with a garbage loading device 5 comprising a rotating plate 1 and a pushing plate 2 is conventionally known.

The garbage loading operation by the above-mentioned garbage loading device 5 is such that the rotary plate 1 rotates from the rear toward the front and scoops up the garbage inputted from the garbage inlet 7 at the rear of the tailgate 6. The pushing plate 2 rotates forward as shown by the arrow and pushes the garbage that has been stirred up into the storage box 3. This loading operation is carried out by the rotary plate 1 and the pushing plate 2 as shown in FIG. It ends at the position where both have rotated forward, that is, the push-in completion position, and the next garbage is loaded.

When the inside of the storage box 3 is full, the garbage pushed into the storage box 3 is collected by rotating the tailgate 6 upward by the operation of the cylinder device 8, as shown in FIG. The box 3 is dumped onto the vehicle body and is discharged.

[Problem that the invention attempts to solve]

By the way, in the conventional garbage collection vehicle as described above, after the inside of the storage box 3 is full and the loading operation is completed as shown in FIG.
Garbage A may be further thrown into the space between.

Even if the garbage A thrown in in this manner is discharged by rotating the tailgate 6 upward as shown in FIG. 8, the rotary plate 1 becomes an obstacle and hardly any of the garbage A is discharged and remains. For this reason, it has conventionally been done to scrape off the remaining garbage A by performing a loading cycle using the rotary plate 1 and the pushing plate 2 inside the tailgate 6, and this scraping operation
As shown in Figures 1 to 12, when the rotating plate 1 rotates backward and reaches a position where the rotating plate 1 and the pushing plate 2 do not interfere with each other, the pushing plate 2 starts to move backward in response to the detection signal. When it reaches the backward limit position, it stops for a certain period of time (Fig. 10), but the rotating plate 1 continues to rotate during this period and stops at the forward rotation completion position as shown in Fig. 11, and then as shown in Fig. 12. Then, the push plate 2 rotates to scrape off the dust. However, in such a scraping operation, when the rotary plate 1 rotates backward as shown in FIG. As a result, the fallen garbage is pushed back toward the back of the tailgate 6 as shown in FIG. 10. For this reason, even if the rotating plate 1 and the pushing plate 2 are used to scrape out as shown in Figures 11 and 12 below, most of the garbage A is pushed to the back of the tailgate 6, and only a small portion is ejected. Not done. Moreover, if the scraping operation is further performed from the state shown in FIG. 12, the garbage A pushed to the back side will enter between the rear of the rotary plate 1 and the input table 9, resulting in the state shown in FIG. 8. The same action as described above is repeated, and therefore the scraping operation must be repeated many times before the dust is completely discharged, resulting in a problem that the discharge operation takes a long time.

In addition, during the rearward rotation of the push plate 2, the push plate 2
When the garbage pushed back is caught between the pushing plate 2 and the cover 11 blocking the garbage inlet 7 as shown in FIG. The cover 11 is pressed hard.
deformation or damage may occur.

The above problem is caused by the positional relationship between the rotating plate 1, the pushing plate 2, and the garbage A. That is, when the rotary plate 1 rotates backward and faces backward because the garbage A is stored at the rear of the rotary plate 1 and the pushing plate 2 is stopped in such a way as to block the scraping opening, the rotation It is impossible to avoid the garbage A falling from the rear of the plate 1 onto the bottom plate of the pusher plate 2, and it is repeatedly pushed back by the rotation of the pusher plate 2 to its return position.

Therefore, this invention takes the above points into consideration, and by making it possible to select an appropriate predetermined stop position for the loading cycle of the garbage loading device, the positional relationship between the loading device and the garbage can be optimized. This is an attempt to solve the above problem.

[Means for solving problems]

In order to solve the above problems, this invention provides a detection switch for stopping the rotary plate in the forward position and a detection switch for stopping it in the backward position with respect to the bottom of the tailgate, and also detects the forward position of the push plate. A switch and a rearmost position detection switch are provided, and by operating the changeover switch, the detection signals of each of the detection switches can be selectively connected to the control unit that controls the garbage loading device, and the pushing plate is activated based on the input signal. The loading cycle operation can be stopped at the most retracted position and when the rotary plate is in the retracted position relative to the tailgate bottom plate.

[Effect]

In the garbage collection vehicle configured as described above, at the end of the loading cycle before garbage is discharged, a changeover switch is operated to stop the garbage loading device with the rotary plate and push plate in the most retracted position. . In this state, the rotary plate stops in a backward position, so the garbage is stored in the front side of the rotary plate and the push plate, and the tailgate is rotated upward to issue a loading cycle command. And scraping out the rotating plate,
The next forward pushing of the pushing plate ensures that the dust inside the tailgate is discharged. On the other hand, when the loading operation is temporarily interrupted, the changeover switch is operated to stop the loading operation at the complete pushing position.

〔Example〕

This invention is applied to a garbage collection vehicle having the same structure as that described in the prior art. That is, as shown in FIG. 2, inside the tailgate 6, there is a rotary plate 1 that scrapes forward the garbage thrown in from the garbage inlet 7, and a shaft 10 that scrapes the garbage scraped up by the rotary plate 1. A pushing plate 2 is provided which rotates about the fulcrum and pushes into the storage box 3.

The rotating plate 1 is driven by a hydraulic motor (not shown), and the pushing plate 2 is driven by a cylinder 12, and the cylinder 12 and the hydraulic motor are controlled to interlock in a fixed relationship by a control section shown in FIG. , to perform the above-mentioned loading operation.

As shown in FIG. 1, the tailgate 6 is equipped with a forward stop position detection switch MS1 for detecting the forward stop position of the rotary plate 1, a switch MS1 for detecting the backward stop position of the rotary plate 1, and a switch MS1 for detecting the backward stop position of the rotary plate 1, and a switch MS1 for detecting the forward stop position of the rotary plate 1. A detection switch MS2 for detecting the return start position of the plate 2 and a switch MS3 for detecting the intermediate stop position of the rotating plate 1 are provided. 2 forward stop position detection switch MS4 and last retraction stop position detection switch
MS5 is installed. These detection switches
As shown in Fig. 6, MS1, MS2, MS3, MS4, and MS5 are connected to a control unit that controls the loading operation of the rotating plate 1 and the pushing plate 2, and are operated as limit switches by the rotation of the rotating plate 1 and the pushing plate 2. Then, the detection signal is transmitted to the control device. In addition, in a garbage collection vehicle in which the rotary plate 1 is rotatably attached to the tip of the pushing plate 2 to serve as a scraping plate, the above-mentioned detection switches MS1 and MS2 can be used as one detection switch.

On the other hand, as shown in FIG. 1, a changeover switch S is provided at the rear of the tailgate 6. As shown in Fig. 6, this changeover switch S is designed to selectively switch three electrical contacts a, b, and c drawn out from the control device, and connects contact d to each contact a, b, and c. When the switch is switched, some detection signals are selected from the above-mentioned detection switches and inputted to the control unit, and when the rotary plate 1 and the push plate 2 come to the predetermined stop position based on the input signals, the control unit outputs a load signal. The circuit is configured so that the loading cycle stop signal is output and the loading operation is stopped. That is,
If the changeover switch S is selected to the b contact position as shown in Fig. 6, the detection signals from each detection switch are ignored, the rotating plate 1 and the push plate 2 are in a continuous operating state, and the start button is in an operating state. The loading operation continues, and the loading operation is stopped by pressing the stop button.

On the other hand, if the changeover switch S is switched to the a contact position while the loading operation is continuous, during one cycle of the loading operation from the time of switching,
Detection switch MS1 detects rotating plate 1, and
When the push plate 2 rotates forward and the detection switch MS4 detects the push plate 2, the detection signal is input to the control unit, and at the same time, the control unit outputs a loading cycle stop signal and the rotation plate 1 and The pushing plate 2 stops at the pushing completion position as shown in FIG. On the other hand, when the changeover switch S is switched to the c contact, the rotating plate 1
rotates from the front to the rear and the detection switch MS2 detects the rotary plate 1, and when the push plate 2 rotates backward and the detection switch MS5 detects the push plate 2, it receives a stop signal from the control section. Then, the rotating plate 1 and the pushing plate 2 stop at the most retracted position as shown in FIG.

In addition, the above-mentioned changeover switch S is the tailgate 6
Install it on the operation panel of the rear door, etc., so that workers can easily switch and operate it during loading work.

This embodiment has the above-mentioned configuration, and when carrying out the loading operation continuously, the changeover switch S is set to b.
Select the contact position. In addition, if the loading operation is to be temporarily interrupted, at the end of the loading cycle, if the changeover switch S is switched to the a contact position, the loading operation can be stopped at the pushing completion position as in the conventional case. I can do it. On the other hand, when the inside of the storage box 3 becomes full and needs to be discharged, the changeover switch S is switched to the c contact position at the end of the loading operation. Then, the rotating plate 1 and the pushing plate 2 stop at the position shown in FIG. 2 due to the above-mentioned action, and the loading operation is completed.

In this state, all the dust is on the rotating plate 1 and the pushing plate 2.
When the tailgate 6 is rotated upward as shown in Fig. 3 to issue a loading cycle command, the rotation plate 1 is pushed in as shown in Figs. 4 and 5. By the scraping operation of the plate 2, the dust inside the tailgate 6 is reliably discharged.

As mentioned above, in this embodiment, the dust can be easily discharged with a single scraping operation.
In addition, since the push plate 2 is in the most retracted position, there is no possibility of dust climbing onto the bottom plate of the push plate 2, so the phenomenon of pushing back the dust by the push plate 2 is eliminated, and an accident of damage to the cover 9 is prevented. be done.

〔effect〕

This invention is constructed as described above, and when loading is completed before discharge by operating a changeover switch, the rotary plate and the push-in plate are stopped at a position set back from the bottom of the tailgate, and the garbage is moved between the rotary plate and the push-in plate. Since the dust is stored on the front side of the plate, the dust remaining in the tailgate can be reliably and efficiently discharged by the scraping operation by the rotary plate and the pushing plate.

[Brief explanation of drawings]

Figure 1 is a side view showing a garbage collection vehicle adopting this invention, Figures 2 to 5 are longitudinal sectional views showing the scraping operation inside the tailgate of the same garbage collection vehicle, and Figure 6 is a side view of the same garbage collection vehicle. FIGS. 7 to 12 are longitudinal cross-sectional views showing the raking operation inside the tailgate of a conventional garbage collection vehicle. 1... Rotating plate, 2... Pushing plate, 3... Garbage storage box, 4... Opening, 5... Garbage loading device, 6...
Tailgate, MS1, MS2, MS3, MS4,
MS5...Detection switch, S...Switching switch.

Claims (1)

[Scope of utility model registration request] A tailgate that closes the opening is attached to the rear opening of the garbage storage box so as to be rotatable in the vertical direction, and a garbage loading device consisting of a rotating plate and a pushing plate is installed inside the tailgate, and a garbage loading device consisting of a rotating plate and a pushing plate is installed at the bottom of the tailgate. In a garbage collection vehicle configured such that a rotary plate scoops up thrown garbage from the rear to the front, and a pushing plate that rotates back and forth pushes the scraped up garbage into a garbage storage box, the rotary plate is attached to the tailgate. A detection switch for stopping at the forward position and a detection switch for stopping at the backward position are provided on the bottom, and a switch for detecting the forward position and a switch for detecting the most retracted position of the pushing plate are provided. A detection signal can be selectively connected to a control unit that controls the garbage loading device, and based on the input signal, the pushing plate is at the most retracted position and the rotary plate is at the retracted position with respect to the tailgate bottom plate. A garbage collection vehicle characterized by being able to stop cycle operation.