JP3102617B2 - Waste collection vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waste collection work vehicle, and more particularly to a waste collection work vehicle provided with a weight measuring device for weighing a waste container for collecting waste.

[0002]

2. Description of the Related Art A waste container (container) accommodating waste is attached detachably for collection of waste such as refuse by weight, and a lifter for lifting the waste container for disposal of the waste is provided. 2. Description of the Related Art There is known a waste collection work vehicle that weighs a waste container by a weight measuring device in a process of lifting the waste container by a lifter.

This waste collection work vehicle is disclosed in Japanese Patent Application Laid-Open No. 61-21 / 1986.
As shown in Japanese Patent No. 5923 and Japanese Patent Laid-Open No. 5-72023, a waste container placed on the ground is lifted upside down by a lifter, and the waste in the waste container is dropped and discharged into a waste collection bucket mounted on a vehicle. Then, the operation of lowering the empty waste container by the lifter and returning the waste container to the ground is all performed in a powered manner using hydraulic pressure and the like, and the waste container by the lifter is operated by a weight measuring device such as a load cell provided in the lifter. The weight of the waste container is weighed during the lifting process and the lowering process. The net waste collection weight is calculated by subtracting the container weight measured in the descending process from the container weight measured in the lifting process.

[0004]

In the garbage collection by the garbage collection work vehicle described above, the garbage collection work vehicle (garbage container storage place) installed in each district is provided with the garbage collection work vehicle traveling around the garbage collection vehicle. The waste of the waste container placed at the collection station is collected, and the state of the weighing device changes as the waste collection work vehicle travels between the waste collection stations.

In order to ensure the weighing accuracy of the weighing device, the weighing value of the weighing device is reduced to zero in a no-load state every time the state of the weighing device changes due to the traveling movement of the waste collection work vehicle. Zero adjustment to reset is required. Conventionally, no countermeasures have been taken, and if the worker performs waste collection without performing this zero adjustment operation, the accuracy of the calculated waste collection weight is not guaranteed, which is particularly true for waste. This is a problem in the collection of weight-based bills.

The present invention has been made in view of the above-described problems. When the state of the weighing device changes, the operator is urged to perform a zero adjustment operation or to perform a zero adjustment operation. If the calibration is not completed, the waste collection work will be prohibited, and if the state of the weighing device changes, zero adjustment will be performed automatically. It is an object of the present invention to provide an improved garbage collection vehicle for preventing garbage.

[0007]

In order to achieve the above-mentioned object, a waste collection work vehicle according to the present invention is provided with a waste container for removably storing waste, and a waste collection bucket mounted on a vehicle. A lifter for lifting the waste container, the weight of the waste container being weighed by a weighing device in the process of lifting the waste container by the lifter, and resetting the weighing value of the weighing device to zero. Zero adjustment means, the zero adjustment means recognizes the completion of zero adjustment by resetting the weighing value of the weighing device to zero, and cancels the recognition of zero adjustment completion by moving the waste collection work vehicle. ,
It is characterized by having control means for controlling the operation of at least one of the display device and the alarm device according to the recognition.

In this case, the control means may control at least one of the display and the alarm in response to the recognition of the completion of the zero adjustment when the waste container is lifted by the lifter. In order to achieve the above object, the waste collection work vehicle according to the present invention includes a waste container that detachably mounts a waste container that stores waste and a lifter that lifts the waste container to dispose of the waste in a vehicle-mounted waste collection bucket. A refuse collection vehicle for weighing the waste container by a weighing device in the process of lifting the refuse container by the lifter, wherein the zero adjustment means resets the weighing value of the weighing device to zero; and By resetting the weighing value of the weighing device to zero by means, the completion of the zero adjustment is recognized, and the recognition of the completion of the zero adjustment is released by the traveling movement of the waste collection work vehicle. Another feature is that it has control means for prohibiting operation.

Further, in the waste collecting work vehicle according to the present invention, the driving source of the lifter is performed by a power take-off of a vehicle traveling power unit, and the traveling movement of the waste collecting work vehicle is detected from a power take-off switch state. May be. To achieve the above object, a waste collection work vehicle according to the present invention has a lifter driven by a power take-off of a vehicle traveling power unit, and lifts a waste container by the lifter to mount the waste container waste on a vehicle. Garbage collection work provided with a calculation device for collecting garbage in a garbage collection bucket, weighing the garbage container by a weighing device in the process of lifting the garbage container by the lifter, and calculating the garbage collection weight based on the weighed value. In the car,
Another feature is that there is provided an automatic zero adjusting means for resetting the weighing value of the weighing device to zero when a power take-off switch is turned on.

In order to achieve the above-mentioned object, a waste collection work vehicle according to the present invention is provided with a waste container for housing waste, which is detachably mounted, and a waste container for disposal of waste in a waste collection bucket mounted on a vehicle. A waste collection work vehicle having a lifter for lifting and weighing the waste container by a weight weighing device in a process of lifting the waste container by the lifter, wherein the weighing device is weighed in an interval period of lifting the waste container by the lifter. It is characterized in that it is detected whether or not the value has become zero, and if it does not become zero, at least one of warning output and operation inhibition of the lifter is performed.

[0011]

[Operation] According to the above configuration, when the waste collection work vehicle travels and moves, the recognition of zero adjustment completion is released.
After the traveling movement, even if the zero adjustment of the weighing device is performed by the zero adjusting means before the traveling movement, the operation states of the display and the alarm device change. For example, when the indicator is a zero adjustment completion indicator lamp, the zero adjustment completion indicator lamp turns off after traveling, and thereafter, the zero adjustment completion indicator lamp goes off unless zero adjustment of the weighing device is performed by the zero adjustment unit. Maintain state.

The control means controls the operation of the display and the alarm in response to the recognition of the completion of the zero adjustment when the waste container is lifted by the lifter. When the lifting of the container is about to start, for example, an alarm sounds. Since the recognition of the completion of the zero adjustment has been released after the traveling movement, the operation of the lifter is prohibited unless the zero adjustment of the weighing device is performed.

When the lifter is driven by the power take-off of the vehicle running power unit, the traveling of the waste collection work vehicle is detected from the power take-off switch state. Also, if automatic zero adjustment means is provided,
When the power take-off switch is turned on, the zero adjustment of the weighing device is automatically executed by the automatic zero adjustment means.

Further, it is detected whether or not the weighing value of the weighing device has become zero during the interval of lifting the waste container by the lifter. Operation is prohibited.

[0015]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of an embodiment of the present invention. FIG. 1 shows an embodiment of a waste collection work vehicle according to the present invention. The refuse collection work vehicle has a cab 3 in front of the traveling body 1 and a refuse collection bucket 5 mounted behind the cab 3. The waste collection bucket 5 is composed of a bucket body 7 fixedly disposed on the traveling body 1 and a waste input hopper 9 attached to the rear of the bucket body 7 so as to be able to be flipped open. The rear side of the waste input hopper 9 has a waste input port 11. It has become.

A hydraulic lifter 13 is provided at the rear end of the waste input hopper 9. As shown in FIG. 2, the hydraulic lifter 13 has a lifter mount member 17 supported by a waste input hopper 9 by a pivot 15, and the lifter mount member 17 has a weight measuring device 19 such as a load cell.
, The lifter base 21 is mounted. The lifter base 21 includes the lifter mount member 1 around the pivot 15.
By the manual rotation of 7, the feeding position located behind the waste input hopper 9 as shown by the solid line in FIG. 2 and the waste input hopper 9 as shown by the virtual line in FIG. It is rotatable and displaceable between a storage position located inside.

The lifter base 21 is stored in a storage position for traveling safety when the waste collection work vehicle is traveling, and is extended to a dispensing position during normal waste collection work. It is assumed that the lifter base 21 is located at the unreeling position unless otherwise described. The lifter base 21 has a main link 23
The lifter plate 27 is attached by the sub-link 25. The main link 23 and the sub link 25 are respectively
One end is pivotally connected to the lifter base 21 by pivots 29 and 33, and the other end is pivotally connected to the back surface of the lifter plate 27 by pivots 31 and 35.

The lifter plate 27 has a vertically descending position as shown by a solid line in FIG.
As shown by the imaginary line in FIG. 2, the rotational displacement in the counterclockwise direction about the pivot 31 of the main link 23 in FIG. 2 and the pivotal connection with the lifter base 21 by the sub-link 25. In addition, it is possible to be displaced between a reversing rising position in which the ascending angle is approximately 45 degrees with respect to the horizontal plane while ascending, and the inclining angle is inverted forward and downward.

A hydraulic cylinder device 39 for driving the lifter is attached to the lifter base 21 by a pivot 37. The hydraulic cylinder device 39 pivotally connects the piston rod 41 to an intermediate portion of the main link 23 by a pivot 43, and pivots the main link 23 to reciprocate the lifter plate 27 between the lowered position and the inverted raised position. It is driven to rotate around 29.

A fixed hook 45 is fixedly mounted on the upper rear surface (front surface) of the lifter plate 27 in the lowered position, and a movable hook 49 is provided rotatably by a pivot 47 on the lower side. One end of the movable hook 49 is connected to the lifter base 2.
The other end of the link 51 which is pivotally connected to 1 and includes a spring (not shown) for absorbing a displacement difference in the middle is pivotally connected, and the movable hook 49 is provided when the lifter plate 27 is located at the lowered position. 2 is located at the release position shown by the solid line in FIG. 2, and is shown by the imaginary line in FIG. 2 by the displacement operation by the link 51 as the lifter plate 27 moves from the lowered position to the inverted position. It reversibly moves to the engagement position.

As shown in FIGS. 2 and 3, the waste container 53 has an upwardly opening box-shaped container body 55 into which waste such as dust is charged in an upright posture, and a container body 55. 56 that can be opened and closed at the top of the
And a traveling wheel 57 provided at a lower portion of the container body 55, and is configured as a hand cart. The fixed hook 45 has a concave upper engaging portion 59 formed on the side of the engaging surface with the lifter plate 27. Engage releasably. An engaging bar 6 is provided on the side of the waste container 53 that engages with the lifter plate 27.
1 is fixedly mounted, and the movable hook 49 is removably engaged with the engagement bar 61.

The lifter plate 27 is provided with a data carrier antenna 63, and the antenna 63 is connected to a signal processing device 65 (see FIG. 4) separately provided in the cab 3 or the like. An ID tag 67 is fixedly attached to the waste container 53 on the side of the engagement surface with the lifter plate 27. The ID tag 67 is configured by a read / write data carrier having a storage unit for storing ID information unique to each waste container 53 and an information writing unit for writing the usage history of the waste container 53 and the like.

The ID tag 67 communicates signals between the waste container 53 and the antenna 63 in a non-contact manner when the waste container 53 is attached to the hydraulic lifter 13. The information transmission system of the data carrier is an electromagnetic induction system. , A microwave system, or the like. Further, the read / write type data carrier constituting the ID tag 67 may be a batteryless type using an EEPROM or the like.

FIG. 4 shows an embodiment of a control system of a waste collection work vehicle according to the present invention. This control system includes a signal processing device 65, a weight calculation device 69, and a hydraulic circuit 75. The signal processing device 65 is connected to the antenna 63 to form a data carrier reader / writer, and the hydraulic lifter 1
3, a process of reading a reception signal of the ID tag 67 of the waste container 53 attached to the container 3, a process of outputting a transmission signal (write signal) to the ID tag 67, and a weight calculator 69.
Handy terminal 7 for signal reading processing, various signal identification processing, and data collection connected to a connector.
7 is output.

The weight calculating device 69 inputs a weight signal from the weight measuring device 19 in the lifting process and the lowering process of the waste container 53 by the hydraulic lifter 13, respectively, and in the lowering process from the container weight measured in the lifting process. The net waste collection weight is calculated by subtracting the weighed container weight, and a signal indicating the net waste collection weight is output to the signal processing device 65 together with the weight measurement value signal.

By inputting an ON signal to the zero reset terminal 70, the weight calculator 69 corrects the current value of the weighing value signal input from the weighing device 19 to zero, that is, performs zero adjustment. The zero reset terminal 70 is connected to the zero adjustment button 7
The zero adjustment button 79 is turned on by an operator to provide an ON signal to the zero reset terminal 70. The zero adjustment button 79 also outputs an ON signal to the control device 81.

The control device 81 includes a lifter storage switch 83
In the off state, that is, when the lifter base 21 is located at the extended position, an ON signal is input from the zero adjustment button 79 to recognize the completion of the zero adjustment, and the vehicle running as the drive source of the hydraulic lifter 13 is driven. When the power take-off switch (PTO switch) 85 of the power unit is turned off, the recognition of the completion of the zero adjustment is canceled.

The control device 81 turns on the zero adjustment completion display lamp 87 when the zero adjustment completion is recognized, and outputs a lifter operation permission command to the hydraulic circuit 75, and turns off the zero adjustment completion display lamp 87 when the recognition is canceled. , And outputs a lifter operation prohibition command to the hydraulic circuit 75. The hydraulic circuit 75 controls the operation of the hydraulic cylinder devices 39 and 51, that is, the operation of the hydraulic lifter 13. When the lifter operation permission command is input, the up operation button 89 and the down operation button 91 are operated. When the hydraulic lifter 13 is driven up and down in response to the operation and a lifter operation prohibition command is input, the up operation button 8
9. The operation of the hydraulic lifter 13 is prohibited regardless of the operation of the down operation button 91.

Next, the operation of the waste collection work vehicle having the above-described configuration will be described. First, after the lifter operation permission command is given to the hydraulic circuit 75, that is, after the waste collection work vehicle arrives at the waste collection station, the hydraulic lifter 13 is extended to the extension position, and the zero adjustment button 79 is set.
The state in which the zero adjustment of the weighing device 19 has been correctly completed by the operation described above will be described. At this time, the zero adjustment completion display lamp 87 is lit, and the operator can know that the zero adjustment of the weighing device 19 is correctly completed by turning on the zero adjustment completion display lamp 87.

When the waste in the waste container 53 is collected, the upper engaging portion 59 of the waste container 53 in the upright posture (normal posture) is first moved to the lifter plate 27 with the lifter plate 27 at the lowered position. Hooking engagement with the fixing hook 45 as shown in FIG. At this point,
The ID tag 67 of the waste container 53 faces the antenna 63, and a signal indicating the ID information of the waste container 53 is received from the ID tag 67 by the antenna 63.

After the hooking engagement is completed, when an up operation button 89 (not shown) provided on the outer wall of the waste input hopper 9 is pressed by an operator, the main link 23 is pivoted around the pivot 29 by the hydraulic cylinder device 39. 2, the lifter plate 27 is rotated in the counterclockwise direction, and the lifter plate 27 moves from the lowered position to the inverted rising position. This lifter plate 2
The movable hook 49 is pivotally displaced from the release position to the engagement position in accordance with the movement of 7, and the movable hook 49 is hooked and engaged with the engagement bar 61 of the waste container 53. Thus, the waste container 53 is locked to the lifter plate 27.

When the waste container 53 is lifted from the lowering position and turned upside down, and is located at the inverted and raised position, the waste material contained in the waste container 53 falls into the waste input hopper 9 and is placed in the bucket body 7. Will be collected.
The weighing device 19 is a waste container 5 by a lifter plate 27.
At the initial stage of the lifting process (when the waste container 53 rises above the ground), the weight of the waste container 53 is measured. This weight measurement is referred to as a waste accommodation weight measurement.

The weighed value of the waste storage weight measurement is input to the weight calculation device 69. When the operator presses the down operation button 91 after the waste is dropped and discharged, the hydraulic cylinder device 39 drives the main link 23 to rotate around the pivot 29 in the clockwise direction in FIG. Move from the position to the descent position. As a result, the empty waste container 53 descends and returns to the ground in the original standing posture.

The weighing device 19 is located at the latter stage of the returning process of the waste container 53 by the lifter plate 27 (just before the waste container 53 lands, and the weighing position and the weighing position of the waste storage weight measurement are the same. May be)
Weighs the waste container 53 and outputs the weighed value to the weight calculator 69. This weight measurement is called an empty weight measurement.

The weight calculation unit 69 calculates the net waste collection weight by subtracting the empty weight measurement value from the waste accommodation weight measurement value, and calculates the net waste collection weight together with the weight measurement value data in the signal processing unit 65 and the integrating unit 71. Output to The signal processing device 65 receives the weight measurement value data and the net waste collection weight data from the weight calculation device 69, writes the data into the ID tag 67 of the waste container 53, and outputs the data to the handy terminal 77 connected to the connector. Execute the processing to be performed.

The waste collection weight calculation may be simplified by omitting the empty weight measurement and subtracting the standard empty weight of the waste container 53 from the measured value of the waste storage weight measurement. In this case, the standard empty weight of the waste container 53 may be set in advance, or may be set for each waste container 53 by reading the standard empty weight data from the ID tag 67 of the waste container 53. The calculation may be performed by a host computer that downloads the data written in the handy terminal 77.

As a result, a signal indicating the net waste collection weight is transmitted from the antenna 63 to the ID tag 67, and the ID tag 6
7, the current net waste collection weight is written, and the storage unit of the handy terminal 77 stores the current net waste collection weight together with the ID information of the waste container 53, the collection date and time. When the waste collection work vehicle completes the waste collection at one waste collection station and travels to the next waste collection station, the PTO switch 85 is turned off and the hydraulic lifter 13 is stored in the storage position.
Thereby, the control device 81 cancels the recognition of the completion of the zero adjustment. By canceling the zero adjustment completion recognition, the zero adjustment completion indicator lamp 87 is turned off, and an operation prohibition command is output to the hydraulic circuit 75.

FIG. 5 shows an operation flow of zero adjustment performed after the traveling of the waste collection work vehicle. First, it is monitored that the PTO switch 85 is turned on (step 10).
When the PTO switch 85 is turned on, it is monitored that the lifter storage switch 83 is turned off, that is, the hydraulic lifter 13 is extended to the extended position (step 2).
0).

When it is confirmed by turning off the lifter storage switch 83 that the hydraulic lifter 13 has been extended to the extended position, it is monitored that the zero adjustment button 79 is pressed next (step 30). When the zero adjustment button 79 is pressed,
Zero adjustment is performed (step 40). When the zero adjustment is performed, it is confirmed whether the current weight data is substantially zero (step 50). If the weight data is substantially zero, it is determined that the zero adjustment has been completed, and the zero adjustment completion display lamp 87 is turned on. (Step 60), and outputs a lifter operation permission command to the hydraulic circuit 75 (Step 70). The weight data at this time may be displayed on the screen of the handy terminal 77, and the completion of the zero adjustment is indicated by the handy terminal 7.
7 may be displayed on the screen. If the weight data is not substantially zero, the process returns to step 30 for monitoring that the zero adjustment button 79 is pressed for retrying the zero adjustment.

FIG. 6 shows a routine for canceling the zero adjustment completion recognition. The routine is executed every predetermined time,
It is monitored that the PTO switch 85 is turned off (step 100). When the PTO switch 85 is turned off, the zero adjustment completion display lamp 87 is turned off (step 110), and a lifter operation prohibition command is output to the hydraulic circuit 75. (Step 120).

Therefore, once the PTO switch 85 is turned off, the zero adjustment completion indicator lamp 87 continues to be turned off unless the zero adjustment is performed by operating the zero adjustment button 79.
In addition, the operation of the hydraulic lifter 13 by the hydraulic circuit 75 is prohibited, and waste collection using the hydraulic lifter 13 cannot be performed. FIG. 7 shows another embodiment of the control system of the waste collection work vehicle according to the present invention. In FIG. 7, parts corresponding to those in FIG. 4 are indicated by the same reference numerals as those in FIG.

In this embodiment, the PTO switch 8
5 is connected to the control device 81, and the control device 81
After a predetermined time has elapsed after the TO switch 85 and the lifter storage switch 83 are turned on, an ON signal is output to the zero reset terminal 70 of the weight calculator 69. As a result, the weighing value signal input from the weighing device 19 is corrected to zero, that is, the zero adjustment is automatically performed.

FIG. 8 shows an operation flow of automatic zero adjustment by turning on the PTO switch 85. Note that, in FIG. 8, the operation steps substantially the same as the operation steps in FIG. 5 will be described with the same step numbers as those in FIG. In this operation flow, it is confirmed that the PTO switch 85 has been turned on (Yes at Step 10), and it is confirmed that the hydraulic lifter 13 has been extended to the extended position by turning off the lifter storage switch 83 (Yes at Step 20). Next, time measurement is started (step 25), and after a predetermined time has elapsed (step 35, affirmative), zero adjustment is automatically executed (step 40).

If the zero adjustment is correctly performed (Yes at step 50), the zero adjustment completion indicator lamp 87 is also turned on (step 60) and a lifter operation permission command is output to the hydraulic circuit 75 (step 70). ). The reason why the zero adjustment is performed after the elapse of the predetermined time is to wait until the hydraulic lifter 13 is extended to the extended position and the state of the weighing device 19 is stabilized.

Also in this embodiment, the routine for canceling the zero adjustment completion recognition shown in FIG. 6 is interrupted at predetermined time intervals, and it is monitored that the PTO switch 85 is turned off (step 100). When the PTO switch 85 is turned off, the zero adjustment completion indicator lamp 87 is turned off (step 110), and a lifter operation prohibition command is output to the hydraulic circuit 75 (step 120).

In this case, the zero adjustment is automatically performed each time the PTO switch 85 is turned on, so that the waste collection work vehicle completes the waste collection in one waste collection station and the next waste collection station If the PTO switch 85 is turned off when traveling to the waste collection station, the PT collection must be started at the next waste collection station.
This means that the zero adjustment has been completed without mistake with the ON operation of the O switch 85.

FIG. 9 shows a routine for checking forgetting zero adjustment in the waste collection work vehicle according to the present invention. This routine is executed by the control system shown in FIG.
It is monitored that the waste container 53 is set on the hydraulic lifter 13 by reading data from the ID tag 63 or by using another proximity switch (step 20).
0) When it is confirmed that the waste container 53 has been set in the hydraulic lifter 13, the lifting of the waste container 53 by the hydraulic lifter 13 is started, and the zero adjustment completion display button 87 is lit to determine whether the zero adjustment has been completed. It is determined based on whether or not there is (Step 210).

If the zero adjustment completion display button 87 is lit, it is determined that the zero adjustment after the traveling movement has already been completed, and a lifter operation permission command is output to the hydraulic circuit 75 (step 220). On the other hand, the zero adjustment completion display button 87
If is not lit, it is determined that the zero adjustment after the traveling movement has not been completed yet, a lifter operation prohibition command is output to the hydraulic circuit 75 (step 230), and the alarm 93 (FIG. 4)
) (Step 240), and the zero adjustment completion display lamp 87 blinks (step 250).

Then, the fact that the waste container 53 has been removed from the hydraulic lifter 13 is monitored based on the data communication state of the waste container 53 with the ID tag 63 (step 26).
0) When it is confirmed that the waste container 53 has been removed from the hydraulic lifter 13, the sounding of the alarm 93 is stopped (step 270), and the zero adjustment completion display lamp 87 is turned off (step 280).

Thereafter, the waste container 53 is moved to the hydraulic lifter 1.
Return to step 200, monitoring that it is set to three. Therefore, in this case, if the worker forgets the zero adjustment operation and tries to start the waste collection of the waste container 53, the operation of the hydraulic lifter 13 is prohibited, the alarm 93 sounds, and the zero adjustment is performed. The completion indicator lamp 87 flashes to notify the operator that the zero adjustment operation has not been performed.

When the waste container 53 is removed from the hydraulic lifter 13 and the weight measuring device 19 is in a no-load state and is ready for zero adjustment, the operator operates the zero adjustment button 79 to execute zero adjustment. do it. Waste container 53
The state that is lifted by the hydraulic lifter 13 can be detected by data communication with the ID tag 63, a proximity switch, a limit switch provided on the hydraulic lifter 13, a movement detection of the lifter plate 27, or the like. Good.

FIG. 10 shows a zero state monitoring routine in the waste collection work vehicle according to the present invention. This routine is also executed by the control system shown in FIG. 4, and once the waste container 53 has been lifted and lowered once by the hydraulic lifter 13 (step 300), the waste container 53 is removed from the hydraulic lifter 13. (Step 310 affirmative), the weight data of the waste container 53 is recorded (Step 320), and thereafter, the weight measurement by the weight weighing device 19 is continued until the next waste container 53 is set on the hydraulic lifter 13. Collect data (steps 330, 34
0). The weight measurement during this period is called an interval period weight measurement.

Next, in this interval period weight measurement, it is determined whether or not there is a weight value of substantially zero, for example, 0.5 kg or less (step 350). During an interval until one waste container 53 is removed from the hydraulic lifter 13 and the next waste container 53 is set on the hydraulic lifter 13, the weight measuring device 19 is in a no-load state, and zero adjustment is correctly performed. Then, the weighing value of the weighing device 19 during this interval period should be almost zero.

Therefore, when there is no weighing value of approximately zero, for example, 0.5 kg or less in the interval period weighing, it means that the zero adjustment has not been correctly performed or the zero adjustment has fluctuated. Performs an error process (step 360). This error processing may be the same as the series of processing in steps 230 to 280 in FIG.

[0055]

As can be understood from the above description, according to the waste collection work vehicle of the present invention, when the waste collection work vehicle travels, the completion of zero adjustment is released, and after the travel movement, the zero adjustment is completed. The operation of the lifter is prohibited unless the completion indicator lamp is turned off and zero adjustment of the weighing device is performed.If the state of the weighing device changes due to the traveling movement of the waste collection vehicle, The user is encouraged to perform the zero adjustment work, and the waste collection work is prohibited, thereby preventing erroneous weighing due to the zero adjustment not being performed.

When the lifter is driven by the power take-off of the vehicle running power unit, the traveling movement of the waste collection work vehicle is simply and reliably detected from the power take-off switch state. Further, when the power take-off switch is turned on, the zero adjustment of the self-weighing device is automatically executed, and the erroneous weighing due to the zero adjustment not being performed is reliably prevented without increasing the work load of the operator.

It is detected whether or not the weight value of the weighing device has become zero during the interval of lifting the waste container by the lifter. If the weight value does not become zero, it is determined that the zero adjustment is not in a correct zero adjustment completion state. The operation of the output or the lifter is prohibited, so that not only the zero adjustment is not performed but also a change with time of the zero adjustment.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing one embodiment of a waste collection work vehicle according to the present invention.

FIG. 2 is a side view showing a hydraulic lifter of the waste collection work vehicle according to the present invention.

FIG. 3 is a front view of a waste container collected by the waste collection work vehicle according to the present invention.

FIG. 4 is a block diagram showing one embodiment of a control system of the waste collection work vehicle according to the present invention.

FIG. 5 is a flowchart showing an operation flow of zero adjustment in the waste collection work vehicle according to the present invention.

FIG. 6 is a flowchart showing a routine for eliminating recognition of completion of zero adjustment in the waste collection work vehicle according to the present invention.

FIG. 7 is a block diagram showing another embodiment of the control system of the waste collection work vehicle according to the present invention.

FIG. 8 is a flowchart showing an operation flow of automatic zero adjustment in the waste collection work vehicle according to the present invention.

FIG. 9 is a flowchart showing a zero adjustment forgetting check routine in the waste collection work vehicle according to the present invention.

FIG. 10 is a flowchart showing a zero state monitoring routine in the waste collection work vehicle according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Traveling body, 3 ... Drive room, 5 ... Waste collection bucket, 7 ...
Bucket body, 9: waste input hopper, 13: hydraulic lifter, 17: lifter mount member, 19: weight measuring device,
21 lifter base, 23 main link, 25 sub link, 27 lifter plate, 39 hydraulic cylinder device, 4
5: fixed hook, 49: movable hook, 53: waste container, 63: antenna for data carrier, 65: signal processor, 67: ID tag, 69: weight calculator, 71: integrating device, 75: hydraulic circuit, 79 … Zero adjustment button, 81…
Control device, 85: PTO switch, 87: Zero adjustment completion indicator lamp

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Toshiyuki Tanaka 3-2-43 Shirite, Tsurumi-ku, Yokohama-shi, Kanagawa Prefecture Shinmeiwa Industry Co., Ltd. Special Equipment Vehicle Division (72) Inventor Takuzo Fukuo Shirite, Tsurumi-ku, Yokohama-shi, Kanagawa Prefecture 3-2-243 Shin Meiwa Industry Co., Ltd.Special Equipment Vehicle Division (72) Inventor Koatsu Sato 3-18-4 Azuma, Tsukuba City, Ibaraki Prefecture (72) Inventor Kazuhiro Fukada 2-16-2 Higashi, Tsukuba City, Ibaraki Prefecture 72) Inventor Masakazu Kadoyama 13-13 Shinashiya-jo, Suita-shi, Osaka (56) References JP-A-5-72023 (JP, A) JP-A-2-210222 (JP, A) JP-A-61-269026 (JP, A) Fully open 1986-87746 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) G01G 19/12

Claims (6)

(57) [Claims] 1. A waste container for removably mounting a waste container accommodating waste, a lifter for lifting the waste container for disposal of the waste in a waste collection bucket mounted on a vehicle, and a weight in the process of lifting the waste container by the lifter. In a waste collection work vehicle that weighs the weight of a waste container by a weighing device, a zero adjustment unit that resets a weighing value of the weighing device to zero, and a weighing value of the weighing device is reset to zero by the zero adjustment unit. Control to recognize the completion of the zero adjustment, and release the recognition of the completion of the zero adjustment by moving the waste collection work vehicle, and control the operation of at least one of the display and the alarm in accordance with the recognition. Means, and a waste collection work vehicle comprising: 2. The apparatus according to claim 1, wherein the control means controls at least one of a display and an alarm in response to the recognition of the completion of the zero adjustment when the waste container is lifted by the lifter. Waste collection vehicle. 3. A waste container having a waste container accommodating the waste therein, a lifter for lifting the waste container for disposal of the waste in a waste collection bucket mounted on the vehicle, and a weight in the process of lifting the waste container by the lifter. In a waste collection work vehicle that weighs the weight of a waste container by a weighing device, a zero adjustment unit that resets a weighing value of the weighing device to zero, and a weighing value of the weighing device is reset to zero by the zero adjustment unit. Control means for recognizing the completion of zero adjustment by recognizing the zero adjustment, canceling the recognition of zero adjustment completion by moving the waste collection work vehicle, and prohibiting the operation of the lifter when the recognition is released. Waste collection work vehicle characterized by the above. 4. The vehicle according to claim 1, wherein the lifter is driven by a power take-off of a vehicle running power unit, and the traveling movement of the waste collection work vehicle is detected from a power take-off switch state. Waste collection work vehicle described in Crab. 5. A waste container having a lifter driven by a power take-off of a vehicle running power unit, wherein the lifter lifts a waste container, collects waste in the waste container into a waste collection bucket mounted on a vehicle, and removes the waste container by the lifter. In a waste collection work vehicle for weighing a waste container by a weighing device during a lifting process, the weighing device has automatic zero adjustment means for resetting a weighing value of the weighing device to zero by turning on a power take-off switch. Waste collection work vehicle characterized by the following. 6. A waste container for removably mounting a waste container accommodating the waste, and a lifter for lifting the waste container for disposal of the waste in a waste collection bucket mounted on a vehicle, wherein the lifter lifts the waste container in a lifting process. In a waste collection work vehicle that weighs the weight of a waste container by a weighing device, it is detected whether or not the weighing value of the weighing device has become zero during an interval period of lifting the waste container by the lifter. A refuse collection work vehicle that performs at least one of warning output and prohibition of operation of the lifter.