JP2006124120A - Garbage collecting vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a garbage collecting vehicle capable of restricting abrasion of a garbage loading device by controlling oil pressure of the garbage loading device, preventing over-loading of garbage, and saving fuel. <P>SOLUTION: This garbage collecting vehicle is provided with a garbage throw-in box arranged in a rear part of a garbage housing box and the garbage loading device built in the garbage throw-in box and driven by oil pressure. This garbage collecting vehicle is also provided with a means such as a control device, a pressure control valve 54 and a relief valve 55 for detecting oil pressure of the garbage loading device in excess of the predetermined value and for counting the number of times, and in the case wherein that number of times exceeds the predetermined number, for lowering the relief pressure of the garbage loading device. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a dust collection vehicle, and more particularly, to a dust collection vehicle for loading dust put into a dust collection box into a dust storage box using a dust loading panel.

  A dust input box is connected to the rear of the dust storage box of the dust collection vehicle, and a dust loading device for loading the input dust into the dust storage box is built in the dust input box. As such a dust loading device, a rotating plate that scrapes dust put into the dust throwing box by rotating around a predetermined axis, and the dust swept up by the rotating plate is loaded into the dust containing box. Rotating type equipped with an oscillating push-in plate, a scraping plate that scrapes dust put into the dust throwing box, and holding dust while compressing dust by lifting the dust together with the stirring plate There is a “compression type” with a movable shielding plate loaded in the box.

  The dust loading panels (pushing plates and movable shielding plates) used in these rotary and compression type dust loading devices swing due to the expansion and contraction of the hydraulic cylinders driven by the hydraulic fluid supplied from the hydraulic pump. Or, it is configured to move up and down. At present, for the purpose of quickly loading a large amount of dust into the dust storage box, a relatively high pressure of hydraulic oil is supplied from the hydraulic pump to the hydraulic cylinder to increase the thrust of the hydraulic cylinder, thereby reducing the dust on the panel. The loading ability is improved.

  However, if the dust storage box is almost full and the movable area of the panel becomes small, etc., if the hydraulic cylinder is continuously driven with hydraulic oil at a relatively high pressure, a large load is applied to the panel, hydraulic cylinder, etc. However, there is a problem that the consumption of parts becomes intense. Also, when the hydraulic pump that drives the hydraulic cylinder is driven by a part of the engine power, it is necessary to increase the engine speed in order to supply relatively high pressure hydraulic oil, which consumes a lot of fuel. There is a problem of end up. Furthermore, there is a problem that if the hydraulic cylinder continues to be driven even if the inside of the refuse storage box approaches a full state, an overloaded state is reached.

In recent years, as a technique for preventing such an overloading state, a “fullness determination device” for determining a full state of a container for loading garbage has been proposed (see, for example, Patent Document 1). This fullness determination device sets the number of times of pushing into the container separately for each type of dust (for example, flammable, non-flammable, business, and residential), and the number of times the dust is pushed in corresponds to the type of dust. When the set number of pushing times (set value) is reached, it is determined that the container has reached a full state.
JP-A-10-120107

  When the fullness determination device described in Patent Document 1 is applied to a garbage collection vehicle, it can be considered that it is possible to determine whether or not the dust storage box has reached a full state. However, since the type (weight) of the dust thrown into the dust throwing box is not always constant, it is not appropriate to determine whether the dust containing box is full based on whether the number of times the panel is pushed in reaches a set value. .

  Further, even if the full state of the dust container can be determined using the full determination device described in Patent Document 1, the drive of the hydraulic cylinder cannot be suppressed until the full state is determined. Therefore, the problem that a large load is applied to the panel and the hydraulic cylinder and the problem that a large amount of fuel is consumed cannot be solved.

  An object of the present invention is to control the oil pressure of the dust loading device to suppress the consumption of the dust loading device, prevent the dust from being overloaded, and reduce the fuel consumption. It is to provide a collection vehicle.

  In order to solve the above-described problems, the invention described in claim 1 includes a dust container box mounted on a vehicle body, a dust container box disposed at the rear of the dust container box, and a built-in dust container box. A dust collection vehicle that loads the dust thrown into the dust bin into the dust container, wherein the oil pressure of the dust load device exceeds a predetermined value. It is characterized by comprising a number-of-times-determining type oil pressure lowering means for lowering the oil pressure when the pull-in operation exceeds a predetermined number.

  According to the invention described in claim 1, the oil pressure of the dust loading device rises due to a large load acting on the dust loading device due to the dust storage box approaching a full state. When the loading operation in a state where the hydraulic pressure exceeds a predetermined value exceeds the predetermined number of times, the hydraulic pressure of the dust loading device can be reduced. Therefore, since the load which acts on the panel, hydraulic cylinder, etc. which comprise a dust loading device can be reduced, consumption of a dust loading device can be suppressed.

  According to the first aspect of the present invention, if the loading operation is continued in a state where the dust container is almost full and a large load is applied to the dust loading device, the hydraulic pressure of the dust loading device is reduced. Since the dust loading operation is automatically suppressed, it is possible to prevent the dust storage box from being overloaded. Further, when the dust loading device is driven by a part of the engine power, it is possible to limit a hydraulic pressure increase state that causes an increase in the engine speed, thereby preventing waste of fuel.

  According to a second aspect of the present invention, in the refuse collection vehicle according to the first aspect, the number determination type hydraulic pressure lowering means lowers the relief hydraulic pressure of the dust loading device to a constant value smaller than the predetermined value. It is characterized by that.

  According to the second aspect of the present invention, when the loading operation in a state where the oil pressure of the dust loading device exceeds a predetermined value exceeds a predetermined number of times, the relief oil pressure of the dust loading device is set to a constant value ( Since it reduces to <predetermined value), a dust loading operation | work can be suppressed effectively and it can alert | report to a worker indirectly that the dust storage box has reached the full state.

  According to a third aspect of the present invention, in the refuse collection vehicle according to the first or second aspect, the dust input box is pivotally supported on the rear upper part of the dust storage box, The relief oil pressure of the dust loading device is reduced when the dust input box rotates and the rear portion of the dust storage box is opened after the relief oil pressure of the dust loading device is lowered by the number of times determination type oil pressure lowering means. An oil pressure resetting means for resetting to the predetermined value is provided.

  According to the third aspect of the present invention, when the dust input box is rotated and the rear part of the dust container is opened after the relief hydraulic pressure of the dust loading device is lowered (the dust is discharged from the dust container). The relief oil pressure of the dust loading device can be reset to a predetermined value. Therefore, the dust loading capacity of the panel can be recovered after the dust is discharged.

  According to a fourth aspect of the present invention, there is provided a dust container box mounted on a vehicle body, a dust container box disposed at a rear portion of the dust container box, and a dust loading device built in the dust container box and driven by hydraulic pressure. In a refuse collection vehicle for loading the dust thrown into the dust throwing box into the dust storage box, when the loading operation in which the hydraulic pressure of the dust loading device exceeds a predetermined value exceeds a predetermined number of times Further, it is characterized by comprising a number of times-determining type loading stopping means for stopping the loading operation.

  According to the fourth aspect of the invention, the oil pressure of the dust loading device increases due to a large load acting on the dust loading device due to the dust storage box approaching a full state. When the dust loading operation in a state where the hydraulic pressure exceeds a predetermined value exceeds a predetermined number of times, the loading operation by the dust loading device can be stopped. Therefore, since the load which acts on the panel, hydraulic cylinder, etc. which comprise a dust loading device can be reduced, consumption of a dust loading device can be suppressed.

  According to the fourth aspect of the present invention, the loading operation is automatically performed when the loading operation is continued in a state where the garbage storage box is almost full and a large load is applied to the dust loading device. Since it stops, it can prevent beforehand that a refuse storage box reaches an overload state. Further, when the dust loading device is driven by a part of the engine power, it is possible to limit a hydraulic pressure increase state that causes an increase in the engine speed, thereby preventing waste of fuel.

  According to a fifth aspect of the present invention, in the refuse collection vehicle according to any one of the first to fourth aspects, the loading operation in which the hydraulic pressure of the dust loading device exceeds the predetermined value is the predetermined number of times. When exceeding, it is provided with the frequency | count determination type | formula alerting | reporting signal output means which outputs the alerting | reporting signal for alert | reporting that.

  According to the fifth aspect of the present invention, when the loading operation in which the oil pressure of the dust loading device exceeds a predetermined value exceeds a predetermined number of times, a notification signal is output to notify the operator or the like. Can be notified.

  A sixth aspect of the present invention is the refuse collection vehicle according to the fifth aspect, wherein the number determination type notification signal output means includes a lighting device that outputs visible light as a visual notification signal. .

  According to the invention described in claim 6, when the loading operation in which the hydraulic pressure of the dust loading device exceeds a predetermined value exceeds a predetermined number of times, the lighting device outputs visible light (visual notification signal). To that effect.

  A seventh aspect of the present invention is the refuse collection vehicle according to the fifth aspect, wherein the number determination type notification signal output means includes a sound output device that outputs a sound as an auditory notification signal. .

  According to the seventh aspect of the present invention, when the loading operation in which the oil pressure of the dust loading device exceeds a predetermined value exceeds a predetermined number of times, a sound (audible notification signal) is output by the sound output device. To that effect.

  An eighth aspect of the present invention is the refuse collection vehicle according to the fifth aspect, wherein the frequency determination type notification signal output means outputs a wireless notification signal and transmits the wireless notification signal to a predetermined receiving device. It is characterized by including.

  According to the eighth aspect of the present invention, when the loading operation in which the oil pressure of the refuse loading device exceeds a predetermined value exceeds a predetermined number of times, the wireless signal transmission device outputs a wireless notification signal to perform predetermined reception. This can be transmitted to the device to notify the fact.

  According to the present invention, when the dust storage box approaches a full state and the loading operation is continued a predetermined number of times while a large load is applied to the dust loading device, the hydraulic pressure of the dust loading device is reduced or loaded. Since the means for stopping the operation is provided, it is possible to suppress the exhaustion of the dust loading device and to prevent the dust storage box from reaching an overload state. Further, when the dust loading device is driven by a part of the engine power, it is possible to limit a hydraulic pressure increase state that causes an increase in the engine speed, thereby preventing waste of fuel.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In each of the following embodiments, a garbage truck equipped with a “compression type” dust loading device will be described.

[First embodiment]
First, the structure of the refuse collection vehicle 1 which concerns on the 1st Embodiment of this invention is demonstrated using FIGS. 1-4.

  As shown in FIGS. 1 to 4, the waste collection vehicle 1 according to the present embodiment includes a dust storage box 20 mounted on the vehicle body 10, a dust input box 30 disposed at the rear of the dust storage box 20, and a dust input. A dust loading device including a scraping plate 40 and a movable shielding plate 50 built in the box 30, an engine 60 driven by a predetermined fuel, a PTO device 70 for extracting the power of the engine 60, and an engine extracted by the PTO device 70 Hydraulic pump P driven by motive power (FIG. 3), pilot lamp 80 that is turned on when the dust container 20 reaches a full state, a control device 90 that integrally controls operations of various devices constituting the dust collection vehicle 1, and the like. It is configured with.

  As shown in FIG. 1, the refuse storage box 20 is fixed to the vehicle body 10 in a state of being disposed at the rear part of the cab 11. An open / close sensor 21 is provided at the rear part of the dust container box 20 to detect whether the dust input box 30 is rotated and the rear opening of the dust container box 20 is opened. The open / close sensor 21 is connected to the control device 90 as shown in FIG. 4, and information detected by the open / close sensor 21 is transmitted to the control device 90 and used for controlling the dust loading device.

  As shown in FIGS. 1 and 2, the dust throwing box 30 is pivotally supported on the rear upper part of the dust container 20 via a pivot shaft 30a, and is a lifting hydraulic cylinder (not shown). The rear opening of the garbage storage box 20 is opened and closed by elongating and contracting. The raising / lowering hydraulic cylinder for raising and lowering the garbage throwing box 30 is supplied with hydraulic oil from the hydraulic pump P driven by the engine power taken out by the PTO device 70, and performs predetermined electromagnetic control under the control of the control device 90. Driven through a valve. Further, as shown in FIGS. 1 and 2, a dust input port 30 b is provided below the rear portion of the dust input box 30.

  As shown in FIG. 2, the dust loading device is thrown into the dust throwing box 30 by swinging in a predetermined direction (in the directions of arrows A and B in FIG. 2) by expansion and contraction of the take-in cylinder 41. A vertical direction (in the direction of arrows C and D in FIG. 2) by the expansion and contraction of the loading cylinder 51 along the guide plate 50a formed on both side walls inside the dust input box 30 And a movable shielding plate 50 that lifts the dust together with the scraping plate 40 and loads the dust into the dust storage box 20.

  As shown in FIGS. 3 and 4, the take-in cylinder 41 that drives the take-in plate 40 is supplied with hydraulic oil from a hydraulic pump P that is driven by engine power taken out by the PTO device 70, and the control device Under the control of 90, it is driven through an electromagnetic control valve 42 having solenoids SOLa and SOLb. Further, the loading cylinder 51 that moves the movable shielding plate 50 up and down receives the supply of hydraulic oil from the hydraulic pump P driven by the engine power taken out by the PTO device 70, and is controlled by the control device 90. It is driven through an electromagnetic control valve 52 having solenoids SOLc and SOLd.

  The swinging movement of the scraping plate 40 is controlled by the control device 90 so as to be interlocked with the lifting / lowering movement of the movable shielding plate 50, and the dust feeding box 30 is brought into cooperation by the cooperation of the scratching plate 40 and the movable shielding plate 50. The thrown dust is compressed and loaded into the dust storage box 20. The raising operation of the movable shielding plate 50 in the direction of arrow C in FIG. 2 corresponds to the loading operation in the present invention.

  Further, a pressure switch 53 is provided at a location communicating with the oil chamber on the piston positive pressure side of the loading cylinder 51 as shown in FIG. The pressure switch 53 outputs a predetermined signal when the oil pressure of the dust loading device (pressure of hydraulic oil supplied to the oil chamber on the piston positive pressure side of the loading cylinder 51) exceeds a predetermined value A. The pressure switch 53 is connected to the control device 90 as shown in FIG. 4, and the signal output from the pressure switch 53 is transmitted to the control device 90 and used for controlling the dust loading device.

  Further, as shown in FIG. 3, the oil pressure of the dust loading device (the operation supplied to the oil pressure chamber on the piston positive pressure side of the loading cylinder 51) is connected to the oil pressure chamber on the piston pressure side of the loading cylinder 51. A pressure control valve 54 and a relief valve 55 are provided for reducing the oil pressure) to a constant value B smaller than the predetermined value A. The pressure control valve 54 is connected to the control device 90 as shown in FIG. 4, and its operation is controlled by a control signal transmitted from the control device 90.

  The power generated by the engine 60 is transmitted to a driving tire via a clutch, a transmission, a differential gear, and the like (not shown). The PTO device 70 is connected to the transmission described above, extracts a part of the power of the engine 60, and drives the hydraulic pump P with the extracted power. The hydraulic pump P is driven by the power from the PTO device 70 to supply hydraulic oil to the take-in cylinder 41 and the loading cylinder 51 via the electromagnetic control valves 42 and 52 shown in FIG. The engine 60, the PTO device 70, and the pilot lamp 80 are connected to the control device 90 as shown in FIG. 4, and their operations are controlled by control signals transmitted from the control device 90.

  As illustrated in FIG. 4, the control device 90 includes a calculation unit 91 that performs various calculations, and a storage unit 92 that stores various control programs and various data. An oil pressure reduction program 92a and a frequency determination formula notification signal generation program 92b are stored. The control device 90 controls the operation of the engine 60 and the PTO device 70 and executes various programs based on signals transmitted from the open / close sensor 21 and the pressure switch 53 to control the operation of each control valve and the pilot lamp 80. To do.

  The control device 90 controls the oil pressure of the dust loading device (pressure of hydraulic oil supplied to the oil chamber on the piston positive pressure side of the loading cylinder 51 that drives the movable shielding plate 50). Specifically, the calculation unit 91 of the control device 90 executes the number-of-times determination type oil pressure reduction program 92a to determine whether or not a predetermined signal is transmitted from the pressure switch 53 (the oil pressure of the dust loading device is a predetermined value). It is determined whether or not the value A has been exceeded, and when a predetermined signal is transmitted, the number of times (the number of times the movable shielding plate 50 is lifted) is counted. When the number of predetermined signals transmitted from the pressure switch 53 exceeds the predetermined number N, it is determined that the dust storage box 20 has reached the full state, and the pressure control valve 54 is controlled, and the relief valve The relief hydraulic pressure by 55 is reduced to a constant value B smaller than the predetermined value A. That is, the control device 90, the pressure control valve 54, and the relief valve 55 constitute the number determination type oil pressure lowering means in the present invention.

  Further, the calculation unit 91 of the control device 90 opens the pressure control valve 54 so that the pressure of the hydraulic oil is applied to the relief valve 55, and then the dust input box 30 rotates to open the rear part of the dust container box 20. When the opening / closing sensor 21 detects this, the pressure control valve 54 is operated to shut off the oil passage leading to the relief valve 55 and reset the relief hydraulic pressure to a predetermined value A. That is, the control device 90 also functions as a hydraulic pressure resetting unit in the present invention. It should be noted that the dust container 20 has not reached the full state and the biting plate 40 has not been bitten, and is in a steady operation state (a state in which a predetermined signal is not transmitted from the pressure switch 53 or a predetermined state from the pressure switch 53). The hydraulic pressure is set to a value smaller than a predetermined value A at which the pressure switch 53 is activated (including a case where the number of times the signal is transmitted does not exceed the predetermined number).

  Further, the calculation unit 91 of the control device 90 determines whether or not a predetermined signal is transmitted from the pressure switch 53 (whether or not the oil pressure of the dust loading device exceeds a predetermined value A). Whether or not a predetermined signal has been transmitted, if the predetermined signal has been transmitted, the number of times (the number of times the movable shielding plate 50 has been lifted) is counted. When the number of predetermined signals transmitted from the pressure switch 53 exceeds the predetermined number N, it is determined that the dust container 20 has reached the full state, and a predetermined notification signal is generated. A signal is output to the pilot lamp 80 to light the pilot lamp 80. The pilot lamp 80 is an illuminating device in the present invention that outputs visible light as a visual notification signal, and the pilot lamp 80 and the control device 90 constitute a frequency determination type notification signal output means in the present invention.

  In the refuse collection vehicle 1 according to the embodiment described above, the dust storage box 20 approaches a full state, and a large load acts on the movable shielding plate 50. The pressure of the hydraulic oil supplied to the oil chamber on the piston positive pressure side of the intake cylinder 51) rises, and the ascending operation of the movable shielding plate 50 in this oil pressure increase state (the oil pressure exceeds a predetermined value A) is predetermined. When the number of times exceeds N times, the hydraulic pressure can be reduced. Therefore, the load acting on the movable shielding plate 50 and the driving device (loading cylinder 51 or the like) that drives the movable shielding plate 50 can be reduced, so that consumption of the dust loading device can be suppressed.

  Further, in the refuse collection vehicle 1 according to the embodiment described above, when the dust storage box 20 approaches a full state and a large load is applied to the movable shield plate 50, the ascending operation of the movable shield plate 50 is continued. Since the oil pressure of the dust loading device is reduced and the dust loading operation is automatically suppressed, the dust storage box 20 can be prevented from reaching an overloaded state.

  Further, in the garbage truck 1 according to the embodiment described above, the dust loading device is driven by a part of the engine power extracted by the PTO device 70, but the hydraulic pressure increase state that causes the engine speed to increase. Since (the state in which the hydraulic pressure exceeds the predetermined value A) can be limited, fuel waste can be prevented.

  Moreover, in the refuse collection vehicle 1 which concerns on embodiment described above, it was driven in the state (state in which the oil pressure of the refuse loading device exceeded predetermined value A) which the predetermined signal was transmitted from pressure switch 53 When the raising operation of the movable shielding plate 50 exceeds the predetermined number N times, the relief hydraulic pressure is reduced to a certain value B, so that the dust loading operation is effectively suppressed and the dust container 20 reaches a full state. This can be indirectly notified to the operator.

  Moreover, in the refuse collection vehicle 1 which concerns on embodiment described above, when dust is discharged | emitted from the dust storage box 20 of a full state (namely, after reducing the oil pressure of a dust loading apparatus to the fixed value B, a dust storage box) The relief oil pressure can be reset from the constant value B to a predetermined value A). Therefore, the dust loading ability of the movable shielding plate 50 can be recovered after the dust is discharged.

  Moreover, in the refuse collection vehicle 1 which concerns on embodiment described above, it was driven in the state (state in which the oil pressure of the refuse loading device exceeded predetermined value A) which the predetermined signal was transmitted from pressure switch 53 When the upward movement of the movable shielding plate 50 exceeds the predetermined number of times N, the pilot lamp 80 can be turned on to notify an operator or the like that the dust container 20 has reached the full state.

[Second Embodiment]
Next, a garbage truck according to the second embodiment of the present invention will be described with reference to FIG. The garbage truck according to the present embodiment is obtained by changing the configuration of the control device 90 of the garbage truck 1 according to the first embodiment, and other configurations are substantially the same as those of the first embodiment. Are identical. For this reason, only the changed configuration will be described, and the same reference numerals as those in the first embodiment will be assigned to the configurations that overlap with those in the first embodiment.

  As shown in FIG. 5, the control device 90A for the garbage truck according to the present embodiment includes a calculation unit 91A that performs various calculations, and a storage unit 92A that stores various control programs and various data. The storage unit 92A stores a number determination formula loading stop program 92c and a number determination formula notification signal generation program 92b.

  The control device 90A determines whether or not the refuse storage box 20 has reached the full state, and forcibly stops the loading operation (drive of the movable shielding plate 50) when the full state is reached. Specifically, the calculation unit 91A of the control device 90A executes the number determination formula loading stop program 92c to determine whether or not a predetermined signal is transmitted from the pressure switch 53 (the oil pressure of the dust loading device is predetermined). If the predetermined value is transmitted, the number of times (the number of times the movable shielding plate 50 is lifted) is measured. When the number of predetermined signals transmitted from the pressure switch 53 exceeds the predetermined number N, it is determined that the dust container 20 has reached a full state, and a drive stop signal is sent to the electromagnetic control valve 52. Is output, and the driving of the movable shielding plate 50 is stopped. That is, the control device 90A functions as the number determination type loading stop means in the present invention.

  In the garbage truck according to the embodiment described above, the oil pressure of the dust loading device increases due to the fact that the dust container 20 approaches a full state and a large load acts on the movable shielding plate 50, etc. The loading operation can be stopped when the rising operation of the movable shielding plate 50 in this hydraulic pressure increase state (a state where the hydraulic pressure exceeds a predetermined value A) exceeds the predetermined number N times. Therefore, the load acting on the movable shielding plate 50 and the driving device (loading cylinder 51 or the like) that drives the movable shielding plate 50 can be reduced, so that consumption of the dust loading device can be suppressed.

  Moreover, in the refuse collection vehicle which concerns on embodiment described above, when the dust storage box 20 approaches a full state and the heavy shield plate 50 has been lifted, the movable shield plate 50 continues to move upward. Since the loading operation automatically stops, it is possible to prevent the refuse storage box 20 from reaching an overloading state.

  In each of the embodiments described above, when it is considered that the dust container 20 has reached the full state (the raising operation of the movable shielding plate 50 driven in a state where a predetermined signal is transmitted from the pressure switch 53) In this example, the pilot lamp 80 is turned on to notify the operator or the like of that, but a sound output device such as a buzzer is provided instead of the pilot lamp 80, and this sound output is performed. By outputting a sound as an audible notification signal from the device, it is possible to notify that the garbage storage box 20 has reached a full state.

  That is, when it is considered that the dust container 20 has reached a full state (when the ascending operation of the movable shielding plate 50 driven with a predetermined signal transmitted from the pressure switch 53 exceeds a predetermined number of times). Then, the control device transmits a predetermined notification signal to the buzzer and outputs a sound from the buzzer to notify the worker or the like that the dust container 20 has reached the full state. The buzzer and the control device in such a case constitute the number determination type informing signal output means in the present invention.

  In addition, when it is assumed that the radio signal transmission device is provided in advance and the dust container 20 has reached the full state (the rising of the movable shielding plate 50 driven in a state where a predetermined signal is transmitted from the pressure switch 53) When the operation exceeds a predetermined number of times), the control device generates a predetermined notification signal, and transmits the wireless notification signal from the wireless signal transmission device to the predetermined reception device, so that the garbage storage box 20 is full. It is also possible to notify that the state has been reached. In such a case, the radio signal transmission device and the control device constitute the number-of-times determination-type notification signal output means in the present invention.

  Further, in each of the above embodiments, an example in which the present invention is applied to a garbage collection vehicle equipped with a “compression type” dust loading device has been shown. However, a “rotation type” provided with a rotating plate and a pushing plate. Even if the present invention is applied to a dust collection vehicle equipped with this kind of dust loading device, the same effect can be obtained. When the present invention is applied to a garbage truck equipped with a “rotary” garbage truck, the push plate of the “rotary” garbage truck becomes the movable shielding plate of the “compressed” garbage truck. Correspondingly, the swinging motion of the push-in plate corresponds to the lifting / lowering motion of the movable shielding plate. Then, the hydraulic pressure on the pushing side of the rocking cylinder that rocks the pushing plate is detected, and the number of times that the pressure becomes greater than a predetermined value is counted and controlled.

1 is a schematic view of a garbage truck according to a first embodiment of the present invention. It is an enlarged view of the refuse loading apparatus of the refuse collection vehicle shown in FIG. It is a figure which shows the hydraulic circuit of the refuse loading apparatus of the refuse collection vehicle shown in FIG. It is a block diagram for demonstrating the functional structure of the garbage truck shown in FIG. It is explanatory drawing for demonstrating the functional structure of the control apparatus of the garbage truck which concerns on the 2nd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Garbage collection vehicle 10 Car body 20 Dust storage box 30 Dust input box 50 Movable shielding plate (a part of dust loading device)
51 Loading cylinder (part of garbage loading device)
54 Pressure control valve (part of the number of times judgment type oil pressure reduction means)
55 Relief valve (a part of the frequency judgment type oil pressure lowering means)
80 Pilot lamp (illumination device, part of number determination type notification signal output means)
90 Control device (part of number determination type oil pressure lowering means, oil pressure resetting means, part of number determination type notification signal output means)
90A control device (number judgment type loading stop means)

Claims (8)

A dust storage box mounted on a vehicle body; a dust input box disposed at a rear portion of the dust storage box; and a dust loading device built in the dust input box and driven by hydraulic pressure. In the garbage truck that loads the garbage thrown into the dust storage box,
A garbage collection vehicle comprising: a number-of-times-determining type oil pressure lowering means for lowering the oil pressure when a loading operation in which the oil pressure of the dust loading device exceeds a predetermined value exceeds a predetermined number of times. The number determination type hydraulic pressure lowering means is:
The refuse collection vehicle according to claim 1, wherein the relief hydraulic pressure of the dust loading device is reduced to a constant value smaller than the predetermined value. The dust box is
It is pivotally supported on the rear upper part of the refuse storage box,
The relief hydraulic pressure of the dust loading device when the dust charging box is rotated and the rear portion of the dust storage box is opened after the relief hydraulic pressure of the dust loading device is lowered by the frequency determination type hydraulic pressure lowering means. The refuse collection vehicle according to claim 1, further comprising: a hydraulic pressure resetting unit that resets the pressure to the predetermined value. A dust storage box mounted on a vehicle body; a dust input box disposed at a rear portion of the dust storage box; and a dust loading device built in the dust input box and driven by hydraulic pressure. In the garbage truck that loads the garbage thrown into the dust storage box,
A garbage collection vehicle comprising: a number-of-times determination type loading stop means for stopping the loading operation when a loading operation in which the hydraulic pressure of the dust loading device exceeds a predetermined value exceeds a predetermined number of times. .   When a loading operation in which the oil pressure of the dust loading device exceeds the predetermined value exceeds the predetermined number of times, a number determination type notification signal output means for outputting a notification signal to notify that is provided. The refuse collection vehicle according to any one of claims 1 to 4 characterized by these. The number determination formula notification signal output means includes:
The garbage truck according to claim 5, further comprising an illumination device that outputs visible light as a visual notification signal. The number determination formula notification signal output means includes:
The garbage truck according to claim 5, further comprising a sound output device that outputs a sound as an audible notification signal. The number determination formula notification signal output means includes:
6. The garbage collection vehicle according to claim 5, further comprising a wireless signal transmission device that outputs a wireless notification signal and transmits the wireless notification signal to a predetermined reception device.

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