JP2021095220A - Garbage collector - Google Patents

Abstract

To provide a garbage collector capable of further easily changing setting of a full loaded condition.SOLUTION: A garbage collector according to the present invention comprises: a detected unit provided on a vehicle chassis, which is attached to a garbage storage box, or a detector 60 for measuring a distance in an upward-downward direction to a ground surface; an over-load determination device 70; and a setting operation unit 39 for setting the detector 60, which is separated from the detector 60. A first registration unit 61 of the detector 60 registers the distance in the upward-downward direction to the detected unit or the ground surface as a first registration distance when performing a first operation predetermined for the setting operation unit 39. A first transmission unit 64 of the detector 60 transmits a first signal toward the over-load determination device 70 when the distance in the upward-downward direction to the detected unit or the ground surface becomes the first registration distance or less. The over-load determination device 70 comprises a determination unit 71 for determining that the garbage storage box is in a full loaded condition when the first signal is received.SELECTED DRAWING: Figure 10

Description

The present invention relates to a garbage truck.

Conventionally, a garbage truck having a dust storage box mounted on a chassis has been known. Some such garbage trucks have a function of detecting overloading in the garbage storage box. For example, Patent Document 1 includes a differential carrier provided below the dust storage box and accommodating the differential gear, and an overload detection device provided on the bottom plate of the dust storage box to detect the distance between the differential carriers. A garbage truck is disclosed. In this garbage truck, the garbage storage box is mounted on a chassis frame supported by a suspension including a differential gear, and its vertical position changes depending on the load capacity. The garbage truck is configured to determine whether or not it is overloaded based on the distance between the differential carrier detected by the overload detection device and the overload detection device.

Japanese Unexamined Patent Publication No. 2019-12176

In the garbage truck disclosed in Patent Document 1, the numerical value of the threshold value for determining whether or not the overload is overloaded can be changed by the operator operating the operation unit of the overload detection device. As a result, the load capacity in the fully loaded state can be changed to a desired load capacity. However, it is not always easy to change the loaded load capacity to a desired load capacity by changing the numerical value of the threshold value. In the garbage truck disclosed in Patent Document 1, the overload determination threshold value is "distance", and the desired load capacity is, for example, "weight" or "volume". Therefore, it is not always easy to determine how much the threshold value should be changed to achieve the desired full load state.

Further, in the garbage truck described in Patent Document 1, an operation unit for setting a threshold value is provided integrally with an overload detection device, and the overload detection device is provided on the bottom plate of the dust storage box. It is provided. Therefore, the operator needs to sneak under the dust storage box or dump the dust storage box in order to change the threshold value. Therefore, changing the threshold setting has become troublesome.

The present invention has been made in view of the above points, and an object of the present invention is to propose a garbage truck in which the setting of the full load state can be changed more easily.

The garbage truck according to the present invention is in the vertical direction between the chassis, the dust storage box mounted on the chassis, and the detected portion provided on the chassis or the ground, which is attached to the dust storage box. A detection device that measures the distance between the two, an overload determination device connected to the detection device, and a setting operation unit that is provided apart from the detection device and is connected to the detection device and sets the detection device. And. The chassis is provided with a support mechanism for supporting the dust storage box so that it moves downward when the load capacity is large and moves upward when the load capacity is small. The detection device includes a first registration unit and a first transmission unit. The first registration unit registers the vertical distance between the detection unit or the ground when a predetermined first operation is performed on the setting operation unit as the first registration distance. To do. The first transmitting unit transmits a first signal to the overload determining device when the vertical distance between the detected unit or the ground becomes equal to or less than the first registered distance. The overload determination device includes a determination unit that determines that the dust storage box is in a fully loaded state when the first signal is received.

According to the garbage truck, the distance between the detection device and the detected unit or the ground when the first predetermined operation is performed on the setting operation unit is registered as the distance corresponding to the full load state. Will be done. Therefore, by performing the first operation with the actual load capacity set to the load capacity desired by the operator, the actual load capacity at that time can be set as the load capacity in the fully loaded state. In addition, since the setting operation unit is provided at a location away from the detection device, the detection device can be used without dumping the dust storage box or the operator sneaking under the dust storage box as in the past. Can be set. This makes it easier to change the full load setting.

According to a preferred aspect of the present invention, the garbage truck has a dust input box having an input port into which dust is input and connected to the dust storage box, and the dust input into the dust input box. It is further equipped with a garbage loading device that feeds the garbage into the garbage storage box. The dust loading box includes a loading operation unit having a plurality of operation switches for operating the dust loading device. The setting operation unit includes some operation switches among the plurality of operation switches of the loading operation unit.

According to this aspect, the setting operation unit that sets the detection device is a part of the operation switch of the loading operation unit that operates the dust loading device. Therefore, the loading operation unit for operating the dust loading device and the setting operation unit for registering the full load state can be used in combination, and the number of members can be reduced as compared with the case where a dedicated setting operation unit is provided, for example. Further, according to this aspect, the operator operates the loading operation unit to confirm that the dust storage box is actually full, and then registers the full load state without moving the place. Can be done. Therefore, it is possible to smoothly register the full load state.

According to a preferred aspect of the above aspect, the first operation includes operating two predetermined operation switches among the plurality of operation switches at the same time.

According to this aspect, the full load state is registered by simultaneously operating the two operation switches of the loading operation unit as the setting operation unit. Therefore, it is possible to distinguish between the registration operation in the full load state and the operation of the dust loading device, and it is possible to suppress an erroneous operation by the operator.

According to a preferred aspect of the above aspect, the dust loading device has a first end detector that detects the end on the pushing side that pushes the dust into the dust storage box, and a second end that detects the end on the returning side. It is equipped with an end detector. The loading operation unit includes a return operation switch for moving the dust loading device to the return side, and an emergency stop operation switch for stopping the dust loading device. The first operation includes operating the return operation switch and the emergency stop operation switch at the same time while the second end detector is detecting the end on the return side.

According to this aspect, the full load state is registered by simultaneously operating the return operation switch and the emergency stop operation switch while the dust loading device is located at the end on the return side. To operate the return operation switch while the debris loading device is located at the return end, and to operate the emergency stop operation switch while the debris loading device is located at the return end. In some cases, the dust loading device does not work. Therefore, it is possible to register the full load state more safely. Also, in the fully loaded state, even if the dust loading device is operated, the dust thrown into the loading port does not enter the dust storage box, and it is difficult to position the dust loading device at the end on the pushing side, while the dust loading device. Can be easily located at the return end. By setting the state in which the full load state can be registered to the end on the return side instead of the end on the push side, it is possible to prevent the problem that the position of the dust loading device does not reach the end and the full load state cannot be registered.

According to a preferred aspect of the present invention, the detection device includes a second registration unit and a second transmission unit. The second registration unit registers the distance between the detected unit or the ground when a predetermined second operation is performed on the setting operation unit as the second registration distance. The second transmitting unit transmits a second signal to the overload determining device when the vertical distance between the detected unit or the ground becomes equal to or greater than the second registered distance. The determination unit is configured to determine that the dust storage box is empty when it receives the second signal.

According to this aspect, the distance between the detection device and the detected unit or the ground when a predetermined second operation is performed on the setting operation unit is registered as the distance corresponding to the empty state. .. Therefore, by performing the second operation with the actual load capacity set to the load capacity desired by the operator, the actual load capacity at that time can be set as the empty load capacity. This makes it easier to change the empty state setting. The actual load capacity when registered as an empty state may or may not be zero.

According to a preferred aspect of the aspect provided with the second registration unit, the garbage truck has a dust input box for charging dust and is connected to the dust storage box, and the dust input box. Further, it is provided with a dust loading device for sending the dust put into the box to the dust storage box. The dust loading box includes a loading operation unit having a plurality of operation switches for operating the dust loading device. The setting operation unit includes some operation switches among the plurality of operation switches of the loading operation unit. The second operation includes operating two predetermined operation switches among the plurality of operation switches at the same time.

According to this aspect, the setting operation unit is a part of the operation switches of the loading operation unit that operates the dust loading device, and the empty state is registered by operating the two operation switches of the loading operation unit at the same time. Will be done. Therefore, the setting operation unit for operating the dust loading device and the setting operation unit for registering the empty state can be used in combination, and the number of members can be reduced as compared with the case where a dedicated setting operation unit is provided, for example. Further, since the second operation is an operation of pressing the two operation switches at the same time, it is possible to distinguish between the operation of registering the empty state and the operation of the dust loading device, and it is possible to suppress an erroneous operation of the operator. Further, according to this aspect, the operator operates the loading operation unit to confirm that the dust storage box is actually empty, and then registers the empty state without moving the place. Can be done. Therefore, the empty state can be registered smoothly.

According to a preferred aspect of the above aspect, the dust loading device has a first end detector that detects the end on the pushing side that pushes the dust into the dust storage box, and a second end that detects the end on the returning side. It is equipped with an end detector. The loading operation unit includes a pushing operation switch for moving the dust loading device to the pushing side, and an emergency stop operation switch for stopping the dust loading device. The second operation includes simultaneously operating the push operation switch and the emergency stop operation switch while the first end detector is detecting the end on the push side.

According to this aspect, the empty state is registered by simultaneously operating the push operation switch and the emergency stop operation switch while the dust loading device is located at the end on the push side. By operating the push operation switch while the device is located at the end of the push side, and by operating the emergency stop operation switch while the device is located at the end of the push side, The dust loading device does not work. Therefore, the empty state can be registered more safely.

According to a preferred aspect of the aspect including the second registration unit, the detection device includes a third registration unit and a third transmission unit. The third registration unit registers a distance that divides the first registration distance and the second registration distance at a predetermined ratio as a third registration distance. The third transmitting unit transmits a third signal to the overload determining device when the vertical distance between the detected unit or the ground is equal to or less than the third registered distance. Upon receiving the third signal, the determination unit is configured to determine that the load capacity of the dust storage box with respect to the fully loaded state is equal to or greater than a predetermined ratio.

According to such an aspect, it can be determined that the load capacity is equal to or more than a predetermined load capacity between the load capacity in the full load state and the load capacity in the empty state.

According to the above-mentioned garbage truck, the setting of the full load state can be changed more easily.

It is a side view of the garbage truck which concerns on embodiment of this invention. It is a rear view which shows the chassis of the garbage truck and a part of the garbage storage box. It is a side view which shows a part of the dust loading apparatus which concerns on 1st Embodiment. It is a side view which shows the other part of the dust loading apparatus which concerns on 1st Embodiment. It is a figure which shows one state of the reversal process of the dust loading apparatus which concerns on 1st Embodiment. It is a figure which shows one state of the lowering process of the dust loading apparatus which concerns on 1st Embodiment. It is a figure which shows one state of the compression process of the dust loading apparatus which concerns on 1st Embodiment. It is a figure which shows one state of the ascending process of the dust loading apparatus which concerns on 1st Embodiment. It is an operation cycle diagram of the dust loading apparatus which concerns on 1st Embodiment. It is a perspective view of the loading operation part which concerns on 1st Embodiment. It is a control block diagram of the garbage truck which concerns on 1st Embodiment. It is a side view of the dust loading device which concerns on 2nd Embodiment. It is an operation cycle diagram of the dust loading apparatus which concerns on 2nd Embodiment. It is a perspective view of the loading operation part which concerns on 2nd Embodiment.

(First Embodiment)
As shown in FIG. 1A, the garbage truck 1 according to the present embodiment includes a chassis 2, a dust storage box 3 mounted on the chassis 2, and a dust input box 4 connected to the dust storage box 3. .. A driver's cab 1A is provided in front of the dust storage box 3. As shown in FIGS. 1A and 1B, the chassis 2 is connected to a pair of front and rear wheels 21, front and rear axles 22 connecting the pair of wheels 21, respectively, and the axle 22. It includes a differential gear 23, a chassis frame 25 that supports the dust storage box 3 and the dust input box 4, and a suspension 26 that supports the chassis frame 25. The differential gear 23 transmits the driving force of an engine (not shown) to the axle 22. The differential gear 23 is housed in, for example, a differential carrier 24 (gear box) formed by casting. The suspension 26 is a mechanism that absorbs vibrations and the like during traveling of the garbage truck 1. The suspension 26 also functions as a mechanism for changing the vertical position of the chassis frame 25 with respect to the wheels 21, the axle 22, the differential gear 23, the differential carrier 24, and the like according to the load capacity of the dust storage box 3.

As shown in FIG. 1B, the dust storage box 3 is provided above the differential carrier 24. The dust storage box 3 is equipped with a detection device 60 for measuring the vertical distance between the dust storage box 3 and the detected portion 24a provided on the differential carrier 24 of the chassis 2. Specifically, a pair of left and right vehicle body frames 27 extending in the front-rear direction of the vehicle are provided on the bottom plate portion of the dust storage box 3. The pair of left and right body frames 27 are mounted on the chassis frame 25, respectively. The detection device 60 is attached to the dust storage box 3 via the vehicle body frame 27. Specifically, one of the pair of left and right vehicle body frames 27 is provided with a mounting bracket 27a for fixing the detection device 60. The mounting bracket 27a extends from the inner surface of one of the vehicle body frames 27 in the vehicle width direction to the central portion in the vehicle width direction. The detection device 60 is attached to the tip of the attachment bracket 27a. The mounting bracket 27a arranges the detection device 60 between the lower surface of the dust storage box 3 and the detected portion 24a of the differential carrier 24.

Here, the detection device 60 is an optical sensor such as a laser sensor. As shown in FIG. 1B, the detection device 60 includes a detection unit 67 that measures the distance to the object. The detection unit 67 includes a light projecting unit 67a that irradiates light for detection and a light receiving unit 67b that receives reflected light from an object. Here, the detection unit 67 irradiates light downward. The detected portion 24a of the differential carrier 24 faces the detecting portion 67 in the vertical direction. The detected portion 24a is composed of a flat surface facing upward.

The distance between the detection device 60 and the detected portion 24a varies depending on the load capacity of the dust storage box 3. Since the chassis frame 25 that supports the dust storage box 3 is supported by the suspension 26, the dust storage box 3 sinks downward as the load capacity of the dust storage box 3 increases. On the contrary, as the load capacity of the dust storage box 3 decreases, the dust storage box 3 moves upward. The chassis frame 25 and the suspension 26 form a support mechanism for supporting the dust storage box 3 so that the chassis frame 25 and the suspension 26 move downward when the load capacity is large and move upward when the load capacity is small. The detection device 60 detects a change in the distance to the detected portion 24a due to a change in the vertical position of the dust storage box 3.

In the present embodiment, the detection device 60 is provided below the dust storage box 3, but the position of the detection device 60 is not limited to this. Further, the detected portion does not have to be provided on the differential carrier 24. The detection device 60 may be directly or indirectly attached to the dust storage box 3 so that the positional relationship with the dust storage box 3 is immovable, and the detected portion is caused by a change in the vertical position of the dust storage box 3. Should be installed in a place where it does not move. The detection method of the detection device 60 is also not limited to the optical method.

Further, if the vertical position of the dust storage box 3 fluctuates, the vertical distance between the detection device 60 and the ground also fluctuates. Therefore, the detection device 60 measures the vertical distance between the detection device 60 and the ground. May be good.

As shown in FIG. 2, the dust input box 4 is supported by a support pin 5 above the opening 3a of the dust storage box 3. An input port 7 is formed at the rear of the dust input box 4. The dust 55 is thrown into the dust throwing box 4 from the throwing port 7.

As shown in FIG. 2, a dust loading device 8 is arranged inside the dust loading box 4. The dust loading device 8 compresses the dust 55 thrown into the dust loading box 4 and sends it to the dust storage box 3. As shown in FIG. 1A, the dust loading box 4 includes a loading operation unit 39 having a plurality of operation buttons 39a to 39e (see FIG. 9) for operating the dust loading device 8. The loading operation unit 39 is provided at the rear portion of the dust loading box 4.

As shown in FIG. 3, a guide groove member 9 extending diagonally backward and downward is provided on the left side wall and the right side wall of the dust input box 4. The dust loading device 8 includes a sliding plate 10 and a rotatable guide roller 11 attached to the sliding plate 10. The guide roller 11 is slidably engaged with the guide groove member 9.

A boss portion 19 is formed on the upper side portion of the sliding plate 10. A support shaft 12 is inserted through the boss portion 19. A sliding cylinder 13 made of a hydraulic cylinder is connected to the support shaft 12. The sliding cylinder 13 extends obliquely downward from the support shaft 12. The sliding cylinder 13 includes a cylinder rod 13a connected to the support shaft 12 and a cylinder tube 13b attached to the side wall of the dust input box 4. Due to the expansion and contraction operation of the sliding cylinder 13, the sliding plate 10 reciprocates up and down along the guide groove member 9. In the present embodiment, two sliding cylinders 13 are provided, but the number of sliding cylinders 13 is not particularly limited.

As shown in FIG. 2, a compression plate 15 is supported by a shaft 15b at the lower end of the sliding plate 10 so as to be swingable in the front-rear direction of the vehicle body. A connecting portion 15a is formed behind the shaft 15b of the compression plate 15. A swing cylinder 14 made of a hydraulic cylinder is connected to the connection portion 15a of the compression plate 15 and the support shaft 12 of the sliding plate 10. The compression plate 15 swings back and forth due to the expansion and contraction operation of the swing cylinder 14. Reference numerals 14a and 14b represent the cylinder tube and the cylinder rod of the swing cylinder 14, respectively. In the present embodiment, two swing cylinders 14 are provided, but the number of swing cylinders 14 is not particularly limited.

The dust loading device 8 has a reversing step of swinging the compression plate 15 backward when the sliding plate 10 is in the raised position (see FIG. 4), and a sliding plate 10 when the compression plate 15 is in the rear position. A lowering step of sliding downward (see FIG. 5), a compression step of swinging the compression plate 15 forward when the sliding plate 10 is in the lowering position (see FIG. 6), and a compression plate 15 in the forward position. It is configured to operate as one cycle in the ascending step (see FIG. 7) in which the sliding plate 10 is slid upward at a certain time. By performing the above cycle, the dust loading device 8 loads the dust 55 charged in the dust charging box 4 into the dust storage box 3. Note that FIG. 8 is an operation cycle diagram showing the cycle by the locus of the tip of the compression plate 15.

As shown in FIG. 3, the dust collecting vehicle 1 has a rise limit switch 31 that detects that the length of the sliding cylinder 13 has reached the maximum length, and the length of the sliding cylinder 13 has become the minimum length. It is provided with a lower limit switch 32 for detecting that. As shown in FIG. 8, the ascending limit switch 31 can detect that the sliding plate 10 has reached the ascending position 31A. The lowering limit switch 32 can detect that the sliding plate 10 has reached the lowering position 32A. The configuration of the ascending limit switch 31 and the descending limit switch 32 is not limited in any way, and may be, for example, a proximity switch. The ascending limit switch 31 and the descending limit switch 32 may be contact type switches or non-contact type switches. As shown in FIG. 3, in the present embodiment, the cylinder rod 13a is formed with a bracket 13c projecting rearward, and the metal plate 33 is fixed to the bracket 13c. The ascending limit switch 31 and the descending limit switch 32 are configured to transmit a detection signal to the control device 40 (see FIG. 10) when the metal plate 33 approaches.

As shown in FIG. 2, in the dust collecting vehicle 1, the reversing limit switch 35 for detecting that the length of the swing cylinder 14 has reached the minimum length and the length of the swing cylinder 14 have reached the maximum length. It is provided with a compression limit switch 36 for detecting this. As shown in FIG. 8, the inversion limit switch 35 can detect that the compression plate 15 has reached the rear position 35A. The compression limit switch 36 can detect that the compression plate 15 has reached the front position 36A. As shown in FIG. 2, the reversing limit switch 35 and the compression limit switch 36 are attached to a bracket 37 connected to the sliding plate 10 and are configured to rise or fall together with the sliding plate 10. The inverting limit switch 35 and the compression limit switch 36 are also composed of, for example, proximity limit switches. However, the configurations of the inverting limit switch 35 and the compression limit switch 36 are not particularly limited. In the present embodiment, the metal plate 38 is fixed to the cylinder tube 14a of the swing cylinder 14. The inverting limit switch 35 and the compression limit switch 36 are configured to transmit a detection signal to the control device 40 when the metal plate 38 approaches.

In the cycle of the inversion step (see FIG. 4), the lowering step (see FIG. 5), the compression step (see FIG. 6), and the ascending step (see FIG. 7), the compression plate 15 is moved as the swing cylinder 14 contracts. It swings backward and the reversal process is performed. Subsequently, the sliding plate 10 is lowered as the sliding cylinder 13 is extended, and the lowering step is performed. Further, the compression plate 15 swings forward as the swing cylinder 14 expands, and the compression step is performed. Further, the sliding plate 10 is raised as the sliding cylinder 13 contracts, and the raising step is performed.

During the cycle, the state shown in FIG. 4 is a state in which the dust loading device 8 pushes the dust 55 most into the dust storage box 3. At this time, as shown in FIG. 8, the sliding cylinder 13 is located at the ascending position 31A, and the sliding plate 10 is located at the uppermost side. At this time, the swing cylinder 14 is located at the front position 36A, and the compression plate 15 is located at the most front side. Hereinafter, the state of the dust loading device 8 in which the sliding plate 10 is located on the uppermost side is referred to as "a state in which the sliding plate 10 is at the pushing side end". At the push-in side end, the sliding cylinder 13 is located at the ascending position 31A, and the sliding plate 10 is located at the uppermost side. At the push-in end, the rise limit switch 31 is transmitting a signal. The rise limit switch 31 is an example of an end detector that detects the end on the pushing side that pushes the dust 55 into the dust storage box 3.

During the cycle, the state shown in FIG. 6 is a state in which the dust loading device 8 is returned to the rear side. At this time, the sliding cylinder 13 is located at the lowering position 32A, and the sliding plate 10 is located at the lowermost position. Hereinafter, the state of the dust loading device 8 in which the sliding plate 10 is located on the lowermost side is referred to as "a state in which the sliding plate 10 is at the return side end". At the return end, the sliding cylinder 13 is located at the descending position 32A, and the sliding plate 10 is located at the lowermost position. At the return end, the descending limit switch 32 is transmitting a signal. The descending limit switch 32 is an example of an end detector that detects the return end.

The dust loading device 8 can be operated by operating the loading operation unit 39 provided on the side of the loading port 7 of the dust loading box 4. As shown in FIG. 9, the loading operation unit 39 includes five operation buttons 39a to 39e for operating the dust loading device 8. However, the operation buttons 39a to 39e are merely examples of operation switches that operate the dust loading device 8, and may be operation switches of a mode other than the push button switch. Here, the loading operation unit 39 includes a loading button 39a, a descending button 39b, an ascending button 39c, a reversing button 39d, and an emergency stop button 39e. As shown in FIG. 10, the loading operation unit 39 is connected to the control device 40. The operation of the loading operation unit 39 for each of the buttons 39a to 39e is commanded to the dust loading device 8 via the control device 40. Specifically, when the loading button 39a is pressed, the dust loading device 8 performs a cycle of a reversing step, a lowering step, a compressing step, and an ascending step. The lower button 39b, the ascending button 39c, and the reversing button 39d manually move the sliding plate 10 or the compression plate 15 when, for example, the dust 55 is clogged in the dust loading device 8. Of these, the lowering button 39b is a button that lowers the sliding plate 10 only while it is being pressed. If the down button 39b is held down, the dust loading device 8 is positioned at the return end. The lower button 39b is an operation switch for moving the dust loading device 8 to the return side. The ascending button 39c is a button that elevates the sliding plate 10 only while it is being pressed. When the ascending button 39c is continuously pressed, the dust loading device 8 is positioned at the push-side end. The ascending button 39c is an operation switch for moving the dust loading device 8 to the pushing side. The reversing button 39d is a button that swings the compression plate 15 backward only while it is being pressed. The emergency stop button 39e is a button that stops the dust loading device 8 when pressed.

As shown in FIG. 10, the control device 40 is connected to an ascending limit switch 31, a descending limit switch 32, an inverting limit switch 35, a compression limit switch 36, and a loading operation unit 39 so as to receive signals from them. It is configured in. The control device 40 is connected to an actuator (for example, a solenoid valve, which is referred to as a sliding cylinder 13 and a swing cylinder 14 in FIG. 10) that expands and contracts the sliding cylinder 13 and the swing cylinder 14, and controls their operations. .. The control device 40 may be configured by hardware, or may be realized by executing a predetermined computer program. The control device 40 is composed of, for example, a programmable controller (PLC) or the like.

As shown in FIG. 10, an overload determination device 70 is connected to the control device 40. The overload determination device 70 includes a determination unit 71 that determines the load capacity of the dust storage box 3, and a display unit 72 that displays the determination result. The display unit 72 is provided here in the driver's cab 1A. The display on the display unit 72 can be confirmed by the operator in the driver's cab 1A. Like the control device 40, the determination unit 71 is composed of, for example, a programmable controller (PLC) or the like. A detection device 60 is connected to the overload determination device 70. The ascending limit switch 31, the descending limit switch 32, the reversing limit switch 35, the compression limit switch 36, and the loading operation unit 39 are connected to the overload determination device 70 via the control device 40. However, some or all of them may be connected to the overload determination device 70 without going through the control device 40.

In the present embodiment, three distances are registered in the detection device 60. The first registration distance corresponds to the distance between the detection device 60 and the detected unit 24a when the dust storage box 3 is fully loaded. The second registration distance corresponds to the distance between the detection device 60 and the detected unit 24a when the dust storage box 3 is empty. The third registration distance corresponds to the distance between the detection device 60 and the detected portion 24a when the dust storage box 3 has a predetermined load capacity between the fully loaded state and the empty state. The third registration distance is a distance that divides the first registration distance and the second registration distance at a predetermined ratio. Therefore, if the first registration distance and the second registration distance are registered, the third registration distance is also determined and registered. The third registration distance is shorter than the second registration distance and longer than the first registration distance. The distance registered in the detection device 60 is not limited to three. For example, a plurality of distances may be registered between the first registered distance and the second registered distance.

For example, when the detection device 60 is configured to measure the distance to the ground, the first registration distance is the distance between the detection device 60 and the ground when the dust storage box 3 is fully loaded. Corresponds to the distance between. The second registration distance corresponds to the distance between the detection device 60 and the ground when the dust storage box 3 is empty. The third registration distance corresponds to the distance between the detection device 60 and the ground when the dust storage box 3 has a predetermined load capacity between the loaded state and the empty state.

The detection device 60 includes a first registration unit 61, a second registration unit 62, and a third registration unit in which the first registration distance, the second registration distance, and the third registration distance are registered, respectively. Registration or change of registration of the distance to the first registration unit 61, the second registration unit 62, and the third registration unit can be performed by operating an operation panel (not shown) of the detection device 60. Further, as a feature of the garbage truck 1 according to the present embodiment, registration or registration change of the distance to the first registration unit 61 and the second registration unit 62 is also performed by another method using the loading operation unit 39. be able to. This registration method will be described later.

As shown in FIG. 10, the detection device 60 includes a first transmission unit 64, a second transmission unit 65, and a third transmission unit 66 that transmit a signal toward the overload determination device 70. When the vertical distance between the first transmitting unit 64 and the detected unit 24a becomes equal to or less than the first registered distance, the first transmitting unit 64 directs the overload determining device 70 to the first signal (hereinafter, also referred to as a full load signal). ) Is sent. When the vertical distance between the second transmitting unit 65 and the detected unit 24a becomes equal to or greater than the second registered distance, the second transmitting unit 65 directs the overload determining device 70 to a second signal (hereinafter, also referred to as an empty signal). ) Is sent. When the vertical distance from the detected unit 24a becomes equal to or less than the third registered distance, the third transmitting unit 66 directs the overload determination device 70 to a third signal (hereinafter, also referred to as an intermediate signal). ) Is sent.

When the overload determination device 70 receives the full load signal, the determination unit 71 determines that the dust storage box 3 is in a full load state, and when it receives an empty signal, determines that the dust storage box 3 is in an empty state, and outputs an intermediate signal. Upon receipt, it is configured to determine that the load capacity of the dust storage box 3 with respect to the full load state is equal to or greater than a predetermined ratio. The predetermined ratio is set to, for example, 30% or 50%. However, it is not particularly limited. When the predetermined ratio is set to, for example, 30%, the third registration distance is set to, for example, a distance that divides the distance between the first registration distance and the second registration distance in a ratio of 3: 7. There is.

In the present embodiment, the display unit 72 is realized as a monitor lamp installed in the driver's cab 1A. The monitor lamp includes a first lamp 72a, a second lamp 72b, and a third lamp 72c. When the determination unit 71 determines that the dust storage box 3 is in the full load state, the first lamp 72a displays a display indicating that the dust storage box 3 is in the full load state. The second lamp 72b displays a display indicating that the dust storage box 3 is empty when the determination unit 71 determines that the dust storage box 3 is empty. When the determination unit 71 determines that the load capacity of the dust storage box 3 with respect to the full load state of the third lamp 72c is equal to or more than a predetermined ratio (for example, 30%), the load capacity of the dust storage box 3 with respect to the full load state is described above. A display indicating that the ratio is equal to or higher than a predetermined ratio is displayed. As shown in FIG. 10, the display unit 72 further includes a buzzer 72d. The display unit 72 may be configured to sound the buzzer 72d temporarily or continuously when it is determined that the dust storage box 3 is in a fully loaded state.

Hereinafter, a method of registering the first registration distance and the second registration distance in the detection device 60 will be described in comparison with the conventional method.

[Conventional method]
Conventionally, there has been a need to change or adjust the registration distance of the detection device corresponding to the full load state of the dust storage box. For example, if the suspension of a garbage truck becomes weak due to aging, it may be determined that the load is full even if the load is not initially determined to be full. Alternatively, for example, there may be a case where the operator wants to change the amount of full load in the judgment to be smaller because he / she wants to know quickly that the physical full load state is approaching. In such a case, conventionally, the operator operates the operation panel provided on the detection device and directly inputs the distance to change the registered distance corresponding to the full load state. In addition, the full load state in the judgment is a guide, and because the density of dust varies (that is, the volume varies even if the weight is the same), the physical full load state and the full load state in the judgment are usually different. This also raises the need to adjust the full load state in the judgment.

When an operator operates the operation panel of the detection device, for example, in a garbage truck having the same configuration as that of the present embodiment, the operator needs to sneak under the dust storage box in order to access the detection device. Therefore, the worker is forced into a cramped working posture.

Further, although "distance" is registered in the detection device, the desired load capacity is "weight" or "volume". Therefore, it is not always easy to determine how much the registration distance should be changed so that the desired loading state can be changed to the full load state.

For the above reasons, it has been difficult for an operator to change the setting of the full load determination of the dust storage box in the past.

[Method of changing the registered distance according to this embodiment]
In view of the above problems, the garbage truck 1 according to the present embodiment is configured so that the first registration distance registered in the detection device 60 can be changed by the following method. When changing the first registration distance according to the present embodiment, first, the dust storage box 3 is actually set to a desired full load state. Next, the dust loading device 8 is placed at the return end. This work may be performed, for example, by using the lower button 39b of the loading operation unit 39. The fact that the dust loading device 8 is arranged at the return side end is detected by the lower limit switch 32 as the return side end detector.

In the first registration distance changing operation, a predetermined first operation is then performed on the loading operation unit 39. In the present embodiment, the setting operation unit for setting the detection device 60 includes a part of the plurality of operation switches 39a to 39e of the loading operation unit 39. As shown in FIG. 1A, the loading operation unit 39 as the setting operation unit for setting the detection device 60 is provided apart from the detection device 60. However, the loading operation unit 39 as the setting operation unit is connected to the detection device 60 via the control device 40 or the like. The first registration unit 61 of the detection device 60 first registers the vertical distance between the loading operation unit 39 and the detected unit 24a when a predetermined first operation is performed. It is configured to be registered as a distance. Therefore, the distance between the detection device 60 and the detected unit 24a in the desired full load state actually realized by the operator is registered as the first registered distance (distance corresponding to the full load state).

In the present embodiment, the first operation for registering the first registration distance is an operation of simultaneously pressing two predetermined buttons among the plurality of buttons 39a to 39e of the loading operation unit 39. Specifically, the first operation is an operation of simultaneously pressing the lowering button 39b and the emergency stop button 39e while the lowering limit switch 32 as the returning end detector detects the returning end. Here, when the down button 39b and the emergency stop button 39e are simultaneously pressed and held for a predetermined time (for example, 10 seconds) or longer, the registration is completed. When the registration is completed, the buzzer 72d provided on the display unit 72 sounds for a predetermined time.

The above two buttons are selected as buttons in which the dust loading device 8 does not operate in the loading cycle when pressed. Press the lower button 39b while the dust loading device 8 is located at the return end, and press the emergency stop button 39e while the dust loading device 8 is located at the return end. Depending on the situation, the dust loading device 8 does not operate. Therefore, it is possible to safely register the full load state. Further, since the registration operation is the simultaneous pressing of the two buttons of the loading operation unit 39, it is possible to distinguish between the registration operation and the operation of the dust loading device 8. The registration work may include work other than the above operations. In the registration work, in addition to the above operations, for example, a confirmation operation as to whether or not registration is permitted may be performed. Further, the registration of the full load state is performed when the dust loading device 8 is located at the end on the return side, when this is performed at the end on the push side, the sliding plate 10 and the sliding plate 10 and the reaction force of the dust 55 are used. This is because the compression plate 15 may be pushed and the end detection may become unstable.

Next, the change of the empty state, that is, the change of the second registration distance will be described. In the second registration distance changing work, the dust storage box 3 is actually made into a desired empty state. Next, the dust loading device 8 is arranged at the push-in side end. This work may be performed, for example, by using the ascending button 39c of the loading operation unit 39. The fact that the dust loading device 8 is arranged at the pushing-side end is detected by the rising limit switch 31 as the pushing-side end detector.

In the second registration distance changing operation, a predetermined second operation is then performed on the loading operation unit 39. The second registration unit 62 of the detection device 60 secondly registers the vertical distance between the loading operation unit 39 and the detected unit 24a when a predetermined second operation is performed. It is configured to be registered as a distance. Therefore, the distance between the detection device 60 and the detected unit 24a in the desired empty state actually realized by the operator is registered as the second registration distance (distance corresponding to the empty state). At this time, it is arbitrary whether or not the dust storage box 3 is actually empty.

In the present embodiment, the second operation for registering the second registration distance is also an operation of simultaneously pressing two predetermined buttons among the plurality of buttons 39a to 39e of the loading operation unit 39. Specifically, the second operation is an operation of simultaneously pressing the ascending button 39c and the emergency stop button 39e while the ascending limit switch 31 as the end detector on the pushing side detects the end on the pushing side. Here, when the ascending button 39c and the emergency stop button 39e are simultaneously pressed and held for a predetermined time (for example, 10 seconds) or longer, the registration is completed. When the registration is completed, the buzzer 72d provided on the display unit 72 sounds for a predetermined time.

The above two buttons are also selected as buttons that do not operate the dust loading device 8 when pressed. Press the ascending button 39c while the dust loading device 8 is located at the end of the pushing side, and press the emergency stop button 39e while the dust loading device 8 is located at the end of the pushing side. Depending on the situation, the dust loading device 8 does not operate. Further, since the registration operation is the simultaneous pressing of the two buttons of the loading operation unit 39, it is possible to distinguish between the registration operation and the operation of the dust loading device 8. In the second registration distance registration work, for example, a confirmation operation as to whether or not registration is permitted may be performed.

In the present embodiment, the third registration distance is automatically determined by determining the first registration distance and the second registration distance. Not only the change of the registration distance, but also the initial setting of the registration distance may be performed by the same operation.

[Action and effect of the first embodiment]
In the detection device 60 of the garbage truck 1 according to the present embodiment, the detection device 60 and the detected unit 24a (or the ground) when a predetermined first operation is performed on the loading operation unit 39. The vertical distance between the two is registered as the first registered distance corresponding to the full load state. Further, in the present embodiment, the setting operation unit (a part of the operation switches of the loading operation unit 39) for setting the detection device 60 is provided apart from the detection device 60. According to the garbage truck 1, the actual load capacity at that time can be set as the load capacity in the fully loaded state by performing the first operation with the actual load capacity set to the load capacity desired by the operator. .. Further, since the loading operation unit 39 as the setting operation unit is provided at a position away from the detection device 60, the threshold value can be set even if the operator does not sneak under the dust storage box 3 as in the conventional case. You can make changes. This makes it easier to change the full load setting.

In the present embodiment, the setting operation unit for setting the detection device 60 includes a part of the plurality of buttons 39a to 39e of the loading operation unit 39. According to this aspect, the operation panel for operating the dust loading device 8 and the operation panel for registering the full load state can be shared, for example, as compared with the case where a dedicated setting operation panel is newly provided. Can be reduced. Further, according to this aspect, the operator operates the loading operation unit 39 to confirm that the dust storage box 3 is actually in the full load state, and then registers the full load state without moving the place. It can be carried out. Therefore, it is possible to smoothly register the full load state.

In the present embodiment, the first operation includes simultaneously operating two predetermined buttons among the plurality of buttons 39a to 39e of the loading operation unit 39. Since the first operation is the simultaneous operation of the two buttons, it is possible to distinguish between the registration operation in the fully loaded state and the operation of the dust loading device 8. As a result, erroneous operation by the operator can be suppressed.

In the present embodiment, the first operation is to simultaneously operate the lower button 39b and the emergency stop button 39e of the loading operation unit 39 in a state where the end on the return side of the dust loading device 8 is detected. Includes. According to this aspect, the dust loading device 8 operates by pressing the lowering button 39b while the dust loading device 8 is located at the end on the return side, and by pressing the emergency stop button 39e. Therefore, it is possible to safely register the full load status. Further, in the fully loaded state, even if the dust loading device 8 is operated, the dust thrown into the loading port 7 does not enter the dust storage box 3, and it is difficult to position the dust loading device 8 at the end on the pushing side. The dust loading device 8 can be easily located at the return end. By setting the state in which the full load state can be registered to the end on the return side instead of the end on the push side, it is possible to prevent the problem that the position of the dust loading device 8 does not reach the end and the full load state cannot be registered.

In the detection device 60 according to the present embodiment, the detection device 60 and the detected unit 24a (or the ground) when a predetermined second operation is performed on the loading operation unit 39 as the setting operation unit. The distance between them is registered as the second registration distance corresponding to the empty state. According to this aspect, by performing the second operation with the actual load capacity set to the load capacity desired by the operator, the actual load capacity at that time can be set as the empty load capacity. This makes it easier to change the empty state setting.

In the present embodiment, the second operation includes simultaneously operating two predetermined buttons among the plurality of buttons 39a to 39e of the loading operation unit 39. According to this aspect, the operation panel for operating the dust loading device 8 and the operation panel for registering the empty state can be shared, for example, as compared with the case where a dedicated setting operation panel is newly provided. Can be reduced. Further, since the second operation is an operation of pressing the two buttons at the same time, it is possible to distinguish between the operation of registering the empty state and the operation of the dust loading device 8. As a result, erroneous operation by the operator can be suppressed. Further, according to such an aspect, the operator confirms the empty state by looking into the inside of the dust storage box 3 from the window portion of the dust storage box 3, and immediately after confirming the empty state, the loading operation unit 39 near the loading port 7 Since it is possible to operate the two predetermined buttons of the above, it is possible to smoothly register the empty state.

In the present embodiment, the second operation includes an operation of simultaneously pressing the ascending button 39c and the emergency stop button 39e of the loading operation unit 39 in a state where the end on the pushing side of the dust loading device 8 is detected. I'm out. According to this aspect, the dust loading device 8 operates by pressing the ascending button 39c and pressing the emergency stop button 39e while the dust loading device 8 is located at the end on the pushing side. Therefore, it is possible to safely register the empty state.

The detection device 60 according to the present embodiment includes a third registration unit 63 that registers a distance that divides the first registration distance and the second registration distance at a predetermined ratio as a third registration distance. , It is configured so that it can be determined that the load capacity of the dust storage box 3 with respect to the full load state is equal to or more than a predetermined ratio. According to such an aspect, it can be determined that the load capacity is equal to or more than a predetermined load capacity between the load capacity in the full load state and the load capacity in the empty state.

(Second Embodiment)
The garbage truck 1 according to the second embodiment shown in FIG. 11 is a garbage truck 1 according to the first embodiment in which the configuration of the dust loading device 8 is changed. The dust loading device 8 according to the second embodiment is a so-called rotary plate type. In the following description, the same parts as those in the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

The dust loading device 8 includes a swingable push plate 110, a rotatable rotary plate 115, a push cylinder 113, and a motor (not shown) for rotating the rotary plate 115. The push-in plate 110 is supported on the side wall of the dust input box 4 so as to be swingable in the front-rear direction of the vehicle body. The push cylinder 113 has a cylinder rod 113a connected to the push plate 110. The rotating plate 115 is configured to be rotatable around the base end 115a as a fulcrum, and is rotated by a motor (not shown). The dust loading device 8 scoops up the dust 55 thrown into the dust loading box 4 by the rotating plate 115, and pushes the dust 55 into the dust storage box 3 by the pushing plate 110. The dust loading device 8 is configured to compress the dust 55 thrown into the dust loading box 4 and load it into the dust storage box 3 by combining the rotating motion of the rotating plate 115 and the swinging motion of the pushing plate 110. Has been done.

The garbage truck 1 according to the second embodiment includes a return limit switch 131 for detecting the maximum contraction position of the push cylinder 113. The return limit switch 131 is attached to, for example, the inner wall of the dust input box 4 and is composed of a proximity switch. A metal plate 133 is fixed to the cylinder rod 113a. The return limit switch 131 is configured to transmit a detection signal to the control device 40 when the metal plate 133 approaches.

The garbage truck 1 further includes a push limit switch 132 that detects the maximum extension position of the push cylinder 113. The configuration of the push limit switch 132 is the same as the configuration of the return limit switch 131.

Further, the garbage truck 1 is provided with a rotation limit switch 135 for detecting the rotation position of the rotation plate 115. The rotation limit switch 135 is configured to detect a position where the rotating plate 115 is substantially horizontal in front of the base end 115a (a position shown by a virtual line in FIG. 11, hereinafter referred to as a rotation stop position). Has been done. The rotation limit switch 135 is attached to, for example, the outer wall of the dust input box 4 and is composed of a proximity switch. A metal plate 138 is fixed to the base end 115a of the rotating plate 115. The rotation limit switch 135 is configured to transmit a detection signal to the control device 40 when the metal plate 138 approaches.

FIG. 12 is an operation cycle diagram of the dust loading device 8 according to the second embodiment. The dust loading device 8 is a position where the rotating plate 115 does not interfere with the backward swinging operation of the pushing plate 110 from the rotation stop position when the pushing plate 110 is in the front position (position shown by a virtual line in FIG. 11) (FIG. 11). A retract rotation step of rotating the push plate 110 to the position shown by the solid line), a return step of swinging the push plate 110 from the front position to the rear position (the position shown by the solid line in FIG. The scraping rotation process of rotating the push plate 110 from a position that does not interfere with the rearward swing operation of the push plate 110 to a rotation stop position, and a push plate 110 forward from the rear position when the rotary plate 115 is stopped at the rotation stop position. It is configured to operate as one cycle of the pushing process of swinging to the position. The return process and a part of the scraping rotation process are performed at the same time.

In the state where the dust loading device 8 according to the present embodiment is at the push-in side end, the push-in plate 110 is arranged on the most front side (position shown by a virtual line in FIG. 11) by extending the push cylinder 113 to the maximum extension position. It is in a state of being. At this time, the push limit switch 132 is transmitting a signal. The push limit switch 132 is an example of an end detector on the push side.

In the state where the dust loading device 8 according to the present embodiment is at the return side end, the pushing plate 110 is arranged on the rearmost side (the position shown by the solid line in FIG. 11) by contracting the pushing cylinder 113 to the maximum shrinking position. It is in a state of being. At this time, the return limit switch 131 is transmitting a signal. The return limit switch 131 is an example of an end detector on the return side.

FIG. 13 is a perspective view showing the loading operation unit 139 according to the present embodiment. As shown in FIG. 13, the loading operation unit 139 according to the present embodiment includes a loading button 139a, a reverse button 139b, a push button 139c, a return button 139d, and an emergency stop button 139e. When the loading button 139a is pressed, the dust loading device 8 performs a cycle of a retracting rotation step, a returning step, a scraping rotation step, and a pushing step. When the reversing button 139b is pressed, the rotating plate 115 reverses only while the reversing button 139b is pressed. When the push button 139c is pressed, the push plate 110 moves forward only while the push button 139c is pressed. When the push button 139c is continuously pressed, the push plate 110 moves to the frontmost side, and the dust loading device 8 is positioned at the push side end. When the return button 139d is pressed, the push plate 110 moves to the rear side only while the return button 139d is pressed. When the return button 139d is continuously pressed, the push plate 110 moves to the rearmost side, and the dust loading device 8 is positioned at the return side end. When the emergency stop button 139e is pressed, the dust loading device 8 is stopped. In the method of registering the first registration distance and the second registration distance, the ascending button 39c of the first embodiment is used as the push button 139c of the present embodiment, and the descending button 39b of the first embodiment is used as the return button 139d of the present embodiment. If it is replaced with, it is the same as the first embodiment.

(Other embodiments)
The first embodiment and the second embodiment are merely examples of the embodiments of the present invention, and the present invention can be implemented in various other embodiments.

In each of the above embodiments, the full load state can be registered when the dust loading device is located at the return end, but it is possible when the dust loading device is located at the pushing end. You may. For example, the first operation may include operating the push button and the emergency stop button at the same time while the push-side end detector is detecting the push-side end. According to such an aspect, it is possible to suppress the possibility that a state in which a large amount of dust is loaded so that the push-in side end cannot be detected is registered as a full load state. In that case, preferably, the second operation includes operating the return button and the emergency stop button at the same time while the return-side end detector is detecting the return-side end. In other words, full load registration is possible when the debris loading device is located at one end of the push side and return side, and empty registration is possible when the debris loading device is at the other end. It may be configured to be possible when located in.

In addition, the operation procedure of the loading operation unit related to the registration of the full load state or the empty state is not particularly limited. Further, the setting operation unit does not have to be shared with the loading operation unit that operates the dust loading device. The position of the operation switch is also not limited. The operation switch may be provided in the driver's cab, for example.

In each of the above embodiments, the load capacity of the dust storage box is indicated by a lamp, but the display method is not limited. The display method may be, for example, an image display on a panel or the like. The detection device may transmit a signal corresponding to the measured distance, for example, as an analog signal, in which case the load capacity display may be configured to change in real time.

The configurations of the chassis, the dust loading device, and the like described above are examples, and are not particularly limited.

Unless otherwise specified, the embodiments do not limit the present invention.

1 Garbage truck 2 Chassis 3 Dust storage box 4 Dust loading box 8 Dust loading device 24a Detected unit 39 Loading operation unit (setting operation unit)
39b Down button (return operation switch)
39c Up button (push operation switch)
39e Emergency stop button (emergency stop operation switch)
55 Dust 60 Detection device 61 1st registration unit 62 2nd registration unit 63 3rd registration unit 64 1st transmission unit 65 2nd transmission unit 66 3rd transmission unit 67 Detection unit 70 Overload judgment device 71 Judgment unit 139c Push button ( Push operation switch)
139d Return button (return operation switch)
139e Emergency stop button (emergency stop operation switch)

Claims (8)

Chassis and
The dust storage box mounted on the chassis and
A detection device attached to the dust storage box and provided on the chassis to measure the vertical distance between the detected portion and the ground.
An overload determination device connected to the detection device and
A setting operation unit that is provided separately from the detection device, is connected to the detection device, and sets the detection device.
With
The chassis is provided with a support mechanism for supporting the dust storage box so that it moves downward when the load capacity is large and moves upward when the load capacity is small.
The detection device is
A first registration unit that registers the vertical distance between the detected unit or the ground when a predetermined first operation is performed on the setting operation unit as the first registration distance.
A first transmitting unit that transmits a first signal to the overload determination device when the vertical distance between the detected unit or the ground becomes equal to or less than the first registered distance.
With
The overload determination device is a garbage truck including a determination unit that determines that the dust storage box is in a fully loaded state when the first signal is received. A dust input box having an input port into which dust is input and connected to the dust storage box, and a dust input box.
A dust loading device that sends the dust thrown into the dust loading box into the dust storage box, and
With more
The dust loading box includes a loading operation unit having a plurality of operation switches for operating the dust loading device.
The garbage truck according to claim 1, wherein the setting operation unit includes some operation switches among the plurality of operation switches of the loading operation unit. The garbage truck according to claim 2, wherein the first operation includes simultaneously operating two predetermined operation switches among the plurality of operation switches. The dust loading device includes a first end detector that detects the end on the pushing side that pushes the dust into the dust storage box, and a second end detector that detects the end on the returning side.
The loading operation unit includes a return operation switch for moving the dust loading device to the return side and an emergency stop operation switch for stopping the dust loading device.
The first operation according to claim 3, further comprising operating the return operation switch and the emergency stop operation switch at the same time while the second end detector is detecting the end on the return side. Garbage truck. The detection device is
A second registration unit that registers the distance between the detected unit or the ground when a predetermined second operation is performed on the setting operation unit as the second registration distance.
A second transmitting unit that transmits a second signal to the overload determination device when the vertical distance between the detected unit or the ground becomes equal to or greater than the second registered distance.
With
The garbage truck according to any one of claims 1 to 4, wherein the determination unit is configured to determine that the dust storage box is empty when the second signal is received. A dust input box having an input port into which dust is input and connected to the dust storage box, and a dust input box.
A dust loading device that sends the dust thrown into the dust loading box into the dust storage box, and
With more
The dust loading box includes a loading operation unit having a plurality of operation switches for operating the dust loading device.
The setting operation unit includes some operation switches among the plurality of operation switches of the loading operation unit.
The garbage truck according to claim 5, wherein the second operation includes simultaneously operating two predetermined operation switches among the plurality of operation switches. The dust loading device includes a first end detector that detects the end on the pushing side that pushes the dust into the dust storage box, and a second end detector that detects the end on the returning side.
The loading operation unit includes a pushing operation switch for moving the dust loading device to the pushing side and an emergency stop operation switch for stopping the dust loading device.
The second operation includes the operation of the push operation switch and the emergency stop operation switch at the same time while the first end detector detects the end on the push side, according to claim 6. Garbage truck. The detection device is
A third registration unit that registers a distance that divides the first registration distance and the second registration distance at a predetermined ratio as a third registration distance.
A third transmitting unit that transmits a third signal toward the overload determination device when the vertical distance between the detected unit or the ground is equal to or less than the third registered distance.
With
Any one of claims 5 to 7, wherein when the determination unit receives the third signal, it determines that the load capacity of the dust storage box with respect to the full load state is equal to or more than a predetermined ratio. Garbage truck described in.

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