JPH07209065A - Waste collecting working vehicle - Google Patents

Abstract

PURPOSE:To prevent the generation of trouble due to a change of a weight measuring device during the movement by cancelling recognition of the finish of zero-adjustment when a waste collecting working vehicle moves for travelling, and inhibiting the operation of a lifter unless zero-adjustment of the weight measuring device is performed after the movement. CONSTITUTION:When a zero-adjustment button 79 is pushed to perform the zero-adjustment of a weight measuring device 19 and a collecting working vehicle is moved for travelling, a PTO switch 85 is turned off, and a zero- adjustment finish display lamp 87 is extinguished. When the PTO switch 85 is turned off once, OFF of the zero-adjustment finish display lamp 87 is continued, and the operation of a hydraulic lifter by a hydraulic circuit 75 is inhibited unless the zero-adjustment button 79 is pushed again for zero-adjustment. Waste collection is thereby impossible. Consequently, when the PTO switch 85 is connected to a control device 81, and the PTO switch 85 and a lifter housing switch are turned on, and thereafter, when the ON signal is output to a zero-reset terminal 70 of the weight measuring device 69, zero-adjustment can be automatically performed.

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 equipped with a weight measuring device for measuring the weight of a waste container for collecting waste.

[0002]

2. Description of the Related Art A waste container (container) for storing waste is detachably mounted for collecting charges such as dust and the like by weight, and a lifter for lifting the waste container for discarding the stored contents is provided. There is known a waste collection work vehicle for measuring the weight of the waste container by a weight measuring device in the process of lifting the waste container by the lifter.

This waste collecting work vehicle is disclosed in JP-A-61-21.
As disclosed in Japanese Patent No. 5923 and Japanese Unexamined Patent Publication No. 5-72023, a waste container placed on the ground is lifted by a lifter and inverted, and the waste in the waste container is dropped into a vehicle-mounted waste collection bucket and discharged. Then, the operation of lowering the empty waste container by the lifter and returning the waste container to the ground is done by hydraulic power, etc. Weigh the waste container during the lifting and lowering process. The net waste collection weight is calculated by subtracting the container weight weighed in the lowering process from the container weight weighed in the lifting process.

[0004]

In the waste collection by the waste collection work vehicle as described above, the waste collection work vehicle patrols the waste collection stations (waste container storage areas) installed in the respective areas, so that each waste Although the waste in the waste container placed in the collection station is collected, the state of the weight measuring device changes as the waste collection work vehicle travels between the waste collection stations.

In order to ensure the weighing accuracy of this weight weighing device, the weighing value of the weight weighing device is set to zero under no load condition each time the state of the weight weighing device is changed by the traveling movement of the waste collection work vehicle. Zero adjustment required to reset. Conventionally, no measures have been taken against this, and if the worker neglects this zero adjustment work and collects waste, the accuracy of the calculated waste collection weight is not guaranteed, and this is especially true. Becomes a problem in the collection of weight-based billing.

The present invention has been made by paying attention to the above-mentioned problems, and when the state of the weight measuring device is changed, the operator is urged to execute the zero adjustment work or the zero adjustment work is performed. If it is not completed, the waste collection work is prohibited, and when the state of the weighing machine changes, zero adjustment is automatically performed. It is an object of the present invention to provide a waste collection work vehicle that is improved so as to prevent the above.

[0007]

In order to achieve the above-mentioned object, a waste collection work vehicle according to the present invention is detachably mounted with a waste container for storing waste, and the waste collection vehicle is equipped with a waste collection bucket for storing waste. In the waste collection work vehicle which has a lifter for lifting the waste container in order to measure the weight of the waste container by the weight measuring device in the process of lifting the waste container by the lifter, the weight value of the weight measuring device is reset to zero. Zero adjustment means and the zero adjustment means recognize the completion of zero adjustment by resetting the measured value of the weight measuring device to zero, and the waste collection work vehicle travels to cancel the recognition of zero adjustment completion. ,
It is characterized by having a control means for controlling the operation of at least one of the display and the alarm according to the recognition.

In this case, the control means may control the operation of at least one of the display device and the alarm device in response to the completion of zero adjustment when the lifter lifts the waste container. Further, in order to achieve the above-mentioned object, the waste collection work vehicle according to the present invention is detachably mounted with a waste container for containing waste, and has a lifter for lifting the waste container for discarding the waste container with respect to an on-vehicle waste collection bucket. And a zero adjustment means for resetting the weight value of the weight measuring device to zero in a waste collection work vehicle for measuring the weight of the waste container by a weight measuring device in the process of lifting the waste container by the lifter. By means of resetting the weighing value of the weight measuring device to zero, the zero adjustment completion is recognized, the waste collection work vehicle travels to cancel the recognition of the zero adjustment completion, and when the recognition is released, the lifter Another feature is that it has a control means for prohibiting the operation.

Further, in the waste collecting work vehicle according to the present invention, the drive source of the lifter is performed by the power take-off of the vehicle running power unit, and the traveling movement of the waste collecting work vehicle can be detected from the switch state of the power take-off. You may be cut off. In order to achieve the above object, the 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 the waste container is lifted by the lifter to mount the waste container on-vehicle. Waste collection work with a calculator that collects the waste container in the waste collection bucket, measures the weight of the waste container with a weight measuring device in the process of lifting the waste container by the lifter, and calculates the waste collection weight based on the measured value. In the car,
Another feature is that the power take-off switch is turned on to have automatic zero adjusting means for resetting the weight value of the weight measuring device to zero.

In order to achieve the above object, the waste collection work vehicle according to the present invention is detachably mounted with a waste container for storing waste, and the waste container is disposed in a vehicle-mounted waste collection bucket for waste disposal. In a waste collection work vehicle that has a lifter for lifting and that weighs the waste container by a weight weighing device in the process of lifting the waste container by the lifter, in the interval period of lifting the waste container by the lifter, the weighing device measures It is characterized in that whether or not the value becomes zero is detected, and if it does not become zero, at least one of warning output and prohibition of the operation of the lifter is performed.

[0011]

[Operation] According to the above configuration, when the waste collection work vehicle travels, the recognition of the zero adjustment completion is canceled,
After the traveling movement, even if the zero adjustment means performs the zero adjustment of the weight measuring device before the traveling movement, the operating states of the display device and the alarm device change. For example, when the display is a zero adjustment completion display lamp, the zero adjustment completion display lamp is turned off after traveling, and then the zero adjustment completion display lamp is turned off unless zero adjustment of the weight measuring device is performed by the zero adjustment means. Stay in the state.

Since the control means controls the operation of the display and the alarm device in response to the recognition of the completion of the zero adjustment when the waste container is lifted by the lifter, the waste is measured in a state where the zero adjustment of the weight measuring device is not performed after traveling. When the lifting of the container is about to be started, for example, an alarm sounds. Further, since the recognition of the completion of the zero adjustment is canceled after the traveling movement, the operation of the lifter is prohibited unless the zero adjustment of the weight measuring device is performed.

When the drive source of the lifter is performed by the power take-off of the vehicle traveling power unit, it is detected from the switch state of the power take-off that the waste collection work vehicle has traveled. If automatic zero adjustment means is provided,
When the power take-off switch is turned on, the zero adjustment of the weight measuring device is automatically executed by the automatic zero adjustment means.

Further, during the interval of lifting the waste container by the lifter, it is detected whether or not the measured value of the weight measuring device becomes zero, and if it does not become zero, it is determined that the correct zero adjustment is not completed, and a warning output or lifter is issued. Is prohibited.

[0015]

Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. FIG. 1 shows an embodiment of a waste collection work vehicle according to the present invention. The waste collection work vehicle has a cab 3 in front of the traveling body 1 and a waste collection bucket 5 behind the cab 3. The waste collection bucket 5 is composed of a bucket main body 7 fixedly arranged on the traveling body 1 and a waste input hopper 9 attached to the rear portion of the bucket main body 7 so as to be flipped open so that the rear side of the waste input hopper 9 is a waste input port 11. 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 attached by. The lifter base 21 is a lifter mount member 1 centered on the pivot 15.
By manual rotation of 7, the unwinding 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 phantom line in FIG. It is rotatable and displaceable between itself and the storage position.

The lifter base 21 is stored in the storage position for traveling safety during traveling of the waste collection work vehicle, and is extended to the extension position during normal waste collection work. Unless otherwise, the lifter base 21 is assumed to be located at the feeding position. Main link 23 on lifter base 21
The lifter plate 27 is attached by the sublink 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 descending position in which it is vertically erected as shown by a solid line in FIG.
As shown by the phantom line in FIG. 2, due to the rotational displacement of the main link 23 around the pivot 31 in the counterclockwise direction and the pivotal connection relationship with the lifter base 21 by the sub-link 25. In addition, it is possible to displace between the reversing and rising position, which is tilted and reversed to the front with a tilt angle of about 45 degrees with respect to the horizontal plane while rising.

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 pistunt rod 41 to an intermediate portion of the main link 23 by a pivot shaft 43, and pivots the main link 23 to reciprocally drive the lifter plate 27 between the lowering position and the reverse raising position. It is driven to rotate around 29.

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

As shown in FIGS. 2 and 3, the waste container 53 has a box-shaped container body 55 of an upper opening type into which waste such as dust is thrown inside in a standing posture, and a container body 55. A lid 56 that can be opened and closed on the upper part of the
And a traveling wheel 57 provided on the lower portion of the container body 55, and is configured as a hand cart, and has a recessed upper engaging portion 59 formed on the side of an engaging surface portion with the lifter plate 27 and the fixed hook 45. Engage in a disengageable manner. Further, the engaging bar 6 is provided on the engaging surface side of the waste container 53 with the lifter plate 27.
1 is fixedly mounted, and a movable hook 49 engages with the engagement bar 61 in a disengageable manner.

A data carrier antenna 63 is provided on the lifter plate 27, and the antenna 63 is connected to a signal processing device 65 (see FIG. 4) separately provided in the operator's cab 3 or the like. An ID tag 67 is fixedly mounted on the surface of the waste container 53 that engages with the lifter plate 27. The ID tag 67 is composed of a read / write type 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.

The ID tag 67 is for contactlessly communicating a signal with the antenna 63 when the waste container 53 is attached to the hydraulic lifter 13. The information transmission system of this data carrier is an electromagnetic induction system. , A microwave method or the like may be used. The read / write type data carrier forming the ID tag 67 may be a battery-less type using an EEPROM or the like.

FIG. 4 shows an embodiment of the control system of the waste collection work vehicle according to the present invention. This control system has 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 reader / writer of a data carrier, and the hydraulic lifter 1
3, the reading processing of the reception signal of the ID tag 67 of the waste container 53 attached to 3, the output processing of the transmission signal (writing signal) to the ID tag 67, and the weight calculation device 69.
Handy terminal 7 for reading signals from a computer, identifying various signals, and collecting data connected to a connector
The output processing of the data to be output to 7 is performed.

The weight calculation device 69 inputs a weight measurement value signal from the weight measurement device 19 in each of the lifting process and the lowering process of the waste container 53 by the hydraulic lifter 13, and in the lowering process from the container weight measured in the lifting process. The weight of the container is subtracted to calculate the net waste collection 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 calculation device 69 corrects the current value of the weight measurement value signal input from the weight measurement device 19 to zero, that is, performs zero adjustment. The zero reset terminal 70 is used for the zero adjustment button 7
9, the zero adjustment button 79 is operated by an operator to give 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 controller 81 includes a lifter storage switch 83.
Is off, that is, when the lifter base 21 is in the extended position, by inputting an on signal from the zero adjustment button 79, it is recognized that the zero adjustment is completed and the vehicle travels as a drive source of the hydraulic lifter 13. When the power take-off switch (PTO switch) 85 of the power unit is turned off, the recognition of the completion of zero adjustment is canceled.

The control device 81 turns on the zero adjustment completion display lamp 87 when recognizing the completion of zero adjustment, and outputs a lifter operation permission command to the hydraulic circuit 75, while turning off the zero adjustment completion display lamp 87 when the recognition is canceled. , Outputs a lifter operation prohibition command to the hydraulic circuit 75. The hydraulic circuit 75 controls the operation of the hydraulic cylinder devices 39, 51, that is, the operation of the hydraulic lifter 13, and 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 according to the operation and the 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-mentioned structure 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.
A state in which the zero adjustment of the weight measuring device 19 is correctly completed by the operation of will be described. At this time, the zero adjustment completion display lamp 87 is lit, and the lighting of the zero adjustment completion display lamp 87 allows the operator to know that the zero adjustment of the weight weighing device 19 has been correctly completed.

When collecting the waste in the waste container 53, the upper engaging portion 59 of the waste container 53 in the upright position (normal position) is first moved to the lifter plate 27 with the lifter plate 27 in the lowered position. 2 is hooked and engaged with the fixed hook 45 of FIG. At this point,
The ID tag 67 of the waste container 53 faces the antenna 63, and the antenna 63 receives the signal indicating the ID information of the waste container 53 from the ID tag 67.

After completion of the hooking engagement, when an operator pushes an up operation button 89 (not shown) provided on the outer wall of the waste throwing hopper 9, the hydraulic cylinder device 39 moves the main link 23 around the pivot 29. In FIG. 2, the lifter plate 27 is driven to rotate counterclockwise, and the lifter plate 27 moves from the lowered position to the inverted raised position. This lifter plate 2
With the movement of 7, the movable hook 49 is rotationally displaced from the released position to the engagement position, and the movable hook 49 is hooked and engaged with the engagement bar 61 of the waste container 53. As a result, 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 located at the reverse rising position, the wastes contained in the waste container 53 fall into the waste input hopper 9 and the inside of the bucket body 7. To be collected.
The weight weighing device 19 uses the lifter plate 27 for the waste container 5
The weight of the waste container 53 is measured at the initial stage of the lifting process of 3 (when the waste container 53 is lifted from the ground). This weight measurement is referred to as waste storage weight measurement.

The weight value of this waste storage weight measurement is input to the weight calculation device 69. When the down operation button 91 is pressed by the worker after the wastes have been 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. 2, and the lifter plate 27 reverses and rises. 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 weight measuring device 19 is in the latter stage of the returning process of the waste container 53 by the lifter plate 27 (just before the waste container 53 is landed, and this measuring position and the waste storing weight measuring position are at the same position). May be)
At, the weight of the waste container 53 is measured, and the measured value is output to the weight calculation device 69. This weighing is called empty weighing.

The weight calculation device 69 calculates the net waste collection weight by subtracting the measurement value of the empty weight measurement from the measurement value of the waste storage weight measurement, and calculates the calculation result together with the weight measurement value data with the signal processing device 65 and the integrating device 71. Output to. The signal processing device 65 inputs the weight measurement value data and the net waste collection weight data from the weight calculation device 69, outputs the data to the ID tag 67 of the waste container 53, and outputs the data to the connector-connected handy terminal 77. Execute the process.

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 measurement 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. Further, 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
The current net waste collection weight is written in 7, and the current net waste collection weight is stored in the storage unit of the handy terminal 77 together with the ID information of the waste container 53, the collection date, the time, and the like. When the waste collection work vehicle completes 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.
As a result, the control device 81 cancels the recognition that the zero adjustment is completed. By canceling this zero adjustment completion recognition, the zero adjustment completion display 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 waste collection work vehicle travels. First, monitor 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 next, 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 whether or not 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 executed, it is confirmed whether or not the current weight data is almost zero (step 50). If the weight data is almost zero, it is determined that the zero adjustment is completed and the zero adjustment completion display lamp 87 is turned on. Then, a lifter operation permission command is output to the hydraulic circuit 75 (step 60) (step 70). The weight data at this time may be displayed on the screen of the handy terminal 77, and the fact that the zero adjustment has been completed is indicated by the handy terminal 7.
It may be displayed on the screen at 7. If the weight data is not substantially zero, the process returns to step 30 where it is monitored that the zero adjustment button 79 is pressed for the zero adjustment retry.

FIG. 6 shows a routine for canceling the zero adjustment completion recognition. The routine is interrupted every predetermined time,
The PTO switch 85 is monitored to be 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 display lamp 87 continues to be turned off unless the zero adjustment is executed by operating the zero adjustment button 79.
Further, the operation of the hydraulic lifter 13 by the hydraulic circuit 75 is prohibited, and the 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. Note that, in FIG. 7, portions corresponding to those in FIG. 4 are denoted 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 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 calculation device 69 after a lapse of a predetermined time. Thus, the weight measurement value signal input from the weight measurement 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, operation steps that are 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: Yes), zero adjustment is automatically executed (step 40).

When the zero adjustment is correctly performed (Yes at Step 50), the zero adjustment completion display lamp 87 is turned on (Step 60) and the lifter operation permission command is output to the hydraulic circuit 75 (Step 70). ). The reason why the zero adjustment is executed after a predetermined time has elapsed is to wait until the hydraulic lifter 13 is extended to the extended position and the state of the weight measuring device 19 is stabilized.

Also in this embodiment, the routine for canceling the zero adjustment completion recognition shown in FIG. 6 is executed every predetermined time 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 display 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, since the zero adjustment is automatically executed every time the PTO switch 85 is turned on, the waste collection work vehicle completes the waste collection at one waste collection station and then completes the next waste collection station. If the PTO switch 85 is turned off during traveling to, the PT will always be available at the start of waste collection at the next waste collection station.
With the ON operation of the O switch 85, zero adjustment is completed without mistake.

FIG. 9 shows a zero adjustment forgetting check routine in the waste collection work vehicle according to the present invention. This routine is executed by the control system shown in FIG. 4, and the signal processing device 65 with the antenna 63 is used by the waste container 53.
It is monitored whether the waste container 53 is set in the hydraulic lifter 13 by reading the data from the ID tag 63 of the device or another proximity switch (step 20).
0) If it is confirmed that the hydraulic lifter 13 has been set, it is determined that the lifting of the waste container 53 by the hydraulic lifter 13 is started, and the zero-adjustment completion display button 87 lights up to indicate whether the zero adjustment is completed. It is determined whether or not there is (step 210).

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

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

After this, the waste container 53 is replaced by the hydraulic lifter 1.
Returning to step 200, which monitors for being set to 3. Therefore, in this case, if the operator 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 and the alarm 93 sounds and the zero adjustment is performed. The completion display lamp 87 blinks to inform the operator that the zero adjustment operation is not 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 in a state where zero adjustment is possible, the operator operates the zero adjustment button 79 to execute zero adjustment. do it. The waste container 53
Is detected by the hydraulic lifter 13 even if the data is exchanged with the ID tag 63, the proximity switch, the limit switch provided on the hydraulic lifter 13 or the movement detection of the lifter plate 27. 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 when the hydraulic lifter 13 completes one-time raising / lowering of the waste container 53 (step 300), the waste container 53 is removed from the hydraulic lifter 13. It is confirmed (Yes at step 310), the weight data of the waste container 53 is recorded (step 320), and then the weight of the weight measuring device 19 is measured 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 the interval period weight measurement.

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

Therefore, when there is no measured value of substantially zero, for example, 0.5 kg or less in the interval period weight measurement, it means that the zero adjustment is not performed correctly or the zero adjustment fluctuates. Error processing is performed (step 360). This error processing may be the same as the series of processing in steps 230 to 280 of FIG.

[0055]

As will 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 recognition of the zero adjustment completion is canceled, and after the travel travels, the zero adjustment is completed. The operation of the lifter is prohibited unless the completion indicator lamp goes off and the weight measuring device is not adjusted to zero. A person is urged to carry out zero adjustment work, and the waste collection work is prohibited, so that erroneous weighing due to non-execution of zero adjustment is prevented.

When the drive source of the lifter is driven by the power take-off of the vehicle traveling power unit, the traveling movement of the waste collection work vehicle can be detected easily and reliably from the switch state of the power take-off. Further, when the power take-off switch is turned on, zero adjustment of the self-weight weighing device is automatically executed, and erroneous weighing due to non-execution of zero adjustment is reliably prevented without increasing the work burden on the operator.

Further, during the interval of lifting the waste container by the lifter, it is detected whether or not the measured value of the weight measuring device becomes zero, and if it does not become zero, it is not a correct zero adjustment completion state and a warning is given. The operation of the output or the lifter is prohibited, and in addition to the non-execution of zero adjustment, it becomes possible to cope with the change with time of zero adjustment.

[Brief description of drawings]

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

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

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

FIG. 4 is a block diagram showing an embodiment of a control system of a 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 canceling the zero adjustment completion recognition 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]

1 ... traveling body, 3 ... operator's cab, 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 ... Data carrier antenna, 65 ... Signal processing device, 67 ... ID tag, 69 ... Weight calculation device, 71 ... Accumulation device, 75 ... Hydraulic circuit, 79 … Zero adjustment button, 81…
Control device, 85 ... PTO switch, 87 ... Zero adjustment completion indicator lamp

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takuzo Fukuo 3-2-43 Shirute, Tsurumi-ku, Yokohama-shi, Kanagawa Shinmeiwa Kogyo Co., Ltd. Specially-equipped vehicle division (72) Inventor, Koatsu Sato 3-Azuma, Tsukuba, Ibaraki 18-4 (72) Inventor Kazuhiro Fukada 2-16-2 East, Tsukuba City, Ibaraki Prefecture (72) Inventor Masakazu Kakuyama 13-13 Shinashiya, Suita City, Osaka Prefecture

Claims (6)

[Claims] 1. A waste container accommodating a waste product is detachably mounted, and a lifter for lifting the waste container for discarding the waste container is mounted on a vehicle-mounted waste collection bucket. In a waste collection work vehicle for weighing the weight of a waste container by a weighing device, zero adjustment means for resetting the weighing value of the weight weighing device to zero, and the weighing value of the weight weighing device is reset to zero by the zero adjusting means. By recognizing the zero adjustment completion, the waste collection work vehicle travels to cancel the recognition of the zero adjustment completion, and controls the operation of at least one of the display and the alarm according to the recognition. A waste collection work vehicle comprising: 2. The control means controls the operation of at least one of a display device and an alarm device in response to recognition of completion of zero adjustment when the waste container is lifted by the lifter. Garbage collection work vehicle. 3. A waste container accommodating waste is detachably mounted, and a lifter for lifting the waste container for discarding the waste container to a vehicle-mounted waste collection bucket is provided, and a weight is provided during a process of lifting the waste container by the lifter. In a waste collection work vehicle for weighing the weight of a waste container by a weighing device, zero adjustment means for resetting the weighing value of the weight weighing device to zero, and the weighing value of the weight weighing device is reset to zero by the zero adjusting means. By recognizing that the zero adjustment is completed, the waste collection work vehicle travels to cancel the recognition of the zero adjustment completion, and when the recognition is released, the lifter operation is prohibited. A waste collection work vehicle. 4. The drive source of the lifter is performed by a power take-off of a vehicle traveling power unit, and the traveling movement of the waste collection work vehicle is detected from a switch state of the power take-off. The waste collection work vehicle described in Crab. 5. A lifter having a power take-off of a vehicle traveling power unit as a drive source, the lifter lifts a waste container to collect the waste in the waste container in a vehicle-mounted waste collection bucket, and the lifter removes the waste container. In a waste collection work vehicle for weighing the weight of a waste container by a weight weighing device in the lifting process, an automatic zero adjusting means is provided for resetting the weighted value of the weight weighing device to zero when a power take-off switch is turned on. A waste collection work vehicle characterized by being installed. 6. A waste container that accommodates waste is detachably mounted, and a lifter for lifting the waste container for discarding the waste container is mounted on a vehicle-mounted waste collection bucket. The weight of the waste container is raised by the lifter. In the waste collection work vehicle for weighing the weight of the waste container by the weighing device, it is detected whether or not the weight value of the weight weighing device becomes zero in the interval period of lifting the waste container by the lifter, and when it does not become zero. A waste collection work vehicle, wherein at least one of warning output and prohibition of operation of the lifter is performed.