KR102395378B1 - Energy saving suction fan driving device of cleaning vehicle with integrated road dust collection, bidirectional pump block used for thereof, and the driving methods thereof - Google Patents

Abstract

The present invention relates to an energy saving suction fan driving device of an integrated road dust collecting and cleaning vehicle, a bidirectional pump block used for the device, and driving methods thereof. The device drives a suction fan sucking external air by using hydraulic pressure generated by driving of a vehicle, and at the same time, charges an internal battery to achieve efficiency of energy use, and at the same time, uses a bidirectional pump block integrally having a forward safety valve to significantly simplify a hydraulic circuit portion applied to the vehicle.

Description

Energy-saving suction fan driving device of cleaning vehicle with integrated road dust collection, bidirectional pump block used for the same, and a driving method thereof the driving methods thereof

The present invention enables charging of the battery inside the cleaning vehicle while driving a suction fan that sucks outside air using hydraulic pressure generated by using the driving force of the cleaning vehicle, and also integrates a forward and reverse safety circuit. It relates to an energy-saving suction fan driving device for a road surface dust collection integrated cleaning vehicle that dramatically simplified the hydraulic circuit part using a bidirectional pump block having a bidirectional pump block, a bidirectional pump block used therein, and a driving method thereof

), 질소산화물(

), 오존(

) 등이 주요대기오염물질로 부상하고 있으며, 특히, 인체 유해성이 높다고 주목받는 초미세 먼지에 대한 농도도 증가하고 있는 추세이다.Due to the rapid increase in the number of automobiles and the growth of industry after the Industrial Revolution, fine dust (

), nitrogen oxides (

), ozone (

) are emerging as major air pollutants, and in particular, the concentration of ultrafine dust, which is attracting attention as being highly harmful to the human body, is also increasing.

1 is a diagram schematically showing the sizes of fine dust and ultrafine dust.

(도면상 TD)이라고 지칭되는 미세 먼지는 지름 10 마이크로미터 정도의 크기를 가지는 먼지로서, 곰팡이나 꽃가루 정도의 크기를 가지는 것으로 알려져 있다. 그리고, 이보다 더 작은 초미세 먼지는

(도면상 TTD)라고 지칭되며 지름이 2.5 마이크로미터의 크기를 가지는 먼지로서, 연소된 입자, 유기화합물, 금속류 등이 이 정도의 미세 크기를 가지는 것으로 알려져 있다.In general, the diameter of human hair (M) is 50 to 70 micrometers (㎛). In contrast,

Fine dust referred to as (TD in the drawing) is dust having a size of about 10 micrometers in diameter, and is known to have a size about mold or pollen. And, ultrafine dust that is smaller than this is

It is referred to as (TTD in the drawing) and has a diameter of 2.5 micrometers, and it is known that combusted particles, organic compounds, metals, etc. have such a fine size.

Among them, ultrafine dust is known to cause lung and cardiovascular diseases or increase the possibility of death of related diseases by reaching the lungs without being filtered by the bronchi.

FIG. 2 is a view showing a state of a vehicle driving on a road.

The generation mechanism of fine dust and ultrafine dust is complicated and the sources thereof are very diverse, and the automobile 10 is known as one of the representative moving emission sources that generate such fine dust and ultrafine dust. Heavy metals such as lead, mercury, and cadmium are emitted from the tire of the automobile 10 according to wear, and nitrogen oxides, carbon dioxide, and water vapor in the exhaust gas (G in the drawing) are also major causes of fine dust generation. reported as one of For this reason, the World Health Organization has designated ultrafine dust emitted from diesel vehicles as a first-class carcinogen due to this risk, and countries around the world are making various efforts to reduce such fine dust in roads or the atmosphere.

The present invention has been devised to solve the above problems, an energy-saving suction fan driving device for a road surface dust collection integrated cleaning vehicle capable of easily removing fine dust from the atmosphere or the road, a bidirectional pump block used therein, and An object of the present invention is to provide a method for driving them.

In addition, an energy-saving suction fan driving device for a road surface dust collection integrated cleaning vehicle capable of sucking more air by strongly rotating the suction fan with hydraulic pressure generated by using the driving force of the cleaning vehicle, a bidirectional pump block used therein, and An object of the present invention is to provide a method for driving them.

In addition, an energy-saving suction fan driving device for a road surface dust collection integrated cleaning vehicle that can save energy used by generating electric power by using a DC motor connected together with a suction fan, a bidirectional pump block used therein, and their We want to provide a driving method.

In addition, an energy-saving suction fan driving device for a road surface dust collection integrated cleaning vehicle that can achieve bidirectional rotation of the hydraulic pump and simplify the hydraulic circuit part through a bidirectional pump block integrally equipped with a forward and reverse safety valve; An object of the present invention is to provide a bidirectional pump block used for this and a driving method thereof.

The present invention is a suction fan (fan) so that the air is sucked in the inlet; a first driving unit connected to the center of the suction fan; and a second driving unit connected to the center of the suction fan.

In addition, the suction port provides a suction fan driving device for a cleaning vehicle, characterized in that the plurality.

In addition, the suction port provides a suction fan driving device for a cleaning vehicle, characterized in that facing the front of the cleaning vehicle.

In addition, the suction port may include an upper suction port provided at an upper portion of the cleaning vehicle; a first side suction port provided on one side of the cleaning vehicle; It provides a suction fan driving device for a cleaning vehicle, characterized in that it includes; a second side suction port provided on the other side of the cleaning vehicle.

In addition, there is provided a suction fan driving device for a cleaning vehicle, characterized in that it further comprises; a clutch (clutch) disposed between the second driving unit and the suction fan.

In addition, the first driving unit provides a suction fan driving device for a cleaning vehicle, characterized in that the electric motor (motor).

In addition, the first driving unit provides a suction fan driving device for a cleaning vehicle, characterized in that the DC motor.

In addition, the second driving unit provides a suction fan driving device for a cleaning vehicle, characterized in that the hydraulic motor.

In addition, the first driving unit is connected to the center of one side of the suction fan with respect to the suction fan, and the second driving unit is connected to the center of the other side of the suction fan. do.

In addition, there is provided a suction fan driving device for the cleaning vehicle further comprising; a second power source for providing a driving force to the second driving unit.

In addition, the second power source provides a suction fan driving device for a cleaning vehicle, characterized in that the hydraulic pump (pump).

In addition, the hydraulic pump provides a suction fan driving device for a cleaning vehicle, characterized in that it is operated by using a rotational force according to the rotation of the wheel of the vehicle.

In addition, there is provided a suction fan driving device for the cleaning vehicle further comprising; a first power source that provides a driving force to the first driving unit.

In addition, the first power source provides a suction fan driving device for a cleaning vehicle, characterized in that the battery (battery).

In addition, there is provided a suction fan driving device for the cleaning vehicle, characterized in that it further comprises; a speed sensor (sensor) for detecting the speed of the cleaning vehicle.

In addition, there is provided a suction fan driving device for a cleaning vehicle, characterized in that it further comprises; a control unit for controlling the operation of the first driving unit and the second driving unit.

In addition, the control unit causes power to be supplied from the second power source to the second driving unit when the cleaning vehicle travels forward or backward, and power is supplied from the first power source to the first driving unit when the cleaning vehicle is stopped. A suction fan drive device for a cleaning vehicle is provided.

In addition, it further includes a reverse gear operation detection sensor, wherein the control unit receives the speed signal from the speed detection sensor and when the reverse signal is not received from the reverse gear operation detection sensor, opens a first valve and 2 closes valve 2 so that the clutch is connected, receives the speed signal from the speed detection sensor and receives the reverse signal from the reverse gear operation detection sensor, closes the first valve and opens the second valve and the clutch provides a suction fan driving device for a cleaning vehicle, characterized in that the connection is blocked.

In addition, the charging circuit unit for outputting the boosted or reduced input voltage; diode bridge; a fourth SPDT (Singe Pole Double Through) relay (relay) device; a fifth speedy relay element; a fourth transistor; a seventh resistor; An eighth resistor is further included, wherein an output terminal of the charging circuit unit is connected to an output terminal of a first power source, an input terminal of the charging circuit unit is connected to a first output terminal of the diode bridge, and the first input terminal of the diode bridge is the connected to a fifth terminal of a fourth SPD relay element, a second input terminal of the diode bridge is connected to a fifth terminal of the fifth SPD relay element, and a common terminal of the fifth SPD relay element is the connected to the other end of the first driving unit, the common terminal of the fourth SPD relay element is connected to one end of the first driving unit, the fourth output terminal of the control unit is connected to one end of the seventh resistor, and the seventh The other end of the resistor is connected to one end of the eighth resistor and a base of the fourth transistor, and a second coil terminal of the fourth speedy relay device and a second coil of the fifth speedy relay device. ) terminal is connected to the collector of the fourth transistor, the second output terminal of the diode bridge, the fourth terminal of the fifth speed relay element, the other terminal of the eighth resistor, and the emitter of the fourth transistor is supplied with ground power, and a first power is supplied to a fourth terminal of the fourth SPD relay element, a first coil terminal of the fourth SPD relay element, and a first coil terminal of the fifth SPD relay element It provides a suction fan driving device for a cleaning vehicle, characterized in that it becomes.

In addition, when the control unit does not receive the speed signal from the speed detection sensor, it supplies a high signal through the fourth output terminal of the control unit,

When receiving the speed signal from the speed sensor, it provides a suction fan driving device for a cleaning vehicle, characterized in that it supplies a low signal through the fourth output terminal of the control unit.

In addition, the first speedy relay element; a second speedy relay element; a first resistor; a second resistor; a third resistor; a fourth resistor; a first transistor; a second transistor; further comprising: a common terminal of the first SPD relay element is connected to a control signal input terminal of the first valve, and a common terminal of the second SPD relay element is a control signal of the second valve It is connected to an input terminal, a first output terminal of the controller is connected to one end of the first resistor, the other end of the first resistor is connected to one end of the second resistor and a base of the first transistor, and the first transistor of the collector is connected to a second coil terminal of the first SPD relay element, a fourth output terminal of the control unit is connected to one end of the third resistor, and the other end of the third resistor is connected to one end of the fourth resistor and It is connected to the base of the second transistor, and a ground power is supplied to the other end of the second resistor, the emitter of the first transistor, the other end of the fourth resistor, and the emitter of the second transistor, and the first SP A first power is supplied to a fourth terminal of the DTT relay element, a fourth terminal of the second SPD relay element, a first coil terminal of the first SPD relay element, and a second coil terminal of the second SPD relay element. It provides a suction fan drive device of the cleaning vehicle, characterized in that supplied.

In addition, when the control unit receives the speed signal from the speed detection sensor and does not receive the reverse signal from the reverse gear operation detection sensor, the control unit supplies a high signal to the first output terminal of the control unit, and supplies a high signal to the second output terminal of the control unit. A low signal is supplied, and when the speed signal is received from the speed detection sensor and the reverse signal is received from the reverse gear operation detection sensor, a low signal is supplied to the first output terminal of the control unit and the second output terminal of the control unit is supplied with a low signal. It provides a suction fan driving device for a cleaning vehicle, characterized in that supplying a high signal.

In addition, the third speed relay element; a fifth resistor; sixth resistor; A third transistor is further included, wherein a common terminal of the third SPD relay element is connected to a control signal input terminal of a clutch, a third output terminal of the controller is connected to one end of the fifth resistor, and the fifth resistor the other end of the sixth resistor is connected to one end of the sixth resistor and the base of the third transistor, the collector of the third transistor is connected to the second coil terminal of the third speed relay element, the other end of the sixth resistor and Ground power is supplied to the emitter of the third transistor, and the first power is supplied to a fourth terminal of the third speedy relay device and a first coil terminal of the third speedy relay device. A suction fan drive device for a vehicle is provided.

In addition, when the control unit receives the speed signal from the speed sensor, it supplies a high signal to the third output terminal of the control unit, and when the speed signal is not applied from the speed sensor, the control unit outputs the third output terminal. It provides a suction fan driving device for a cleaning vehicle, characterized in that for supplying a low signal.

In addition, it provides a suction fan driving device for a cleaning vehicle, characterized in that it further comprises a DC-DC converter that receives the first power of the first power source and converts it into the second power used for driving the circuit.

Also, a fifth diode; a first capacitor; a second capacitor; a third capacitor; a fourth capacitor; a fifth capacitor; a sixth capacitor; a seventh capacitor; a first zener diode; A first inductor (inductor); further comprising, the anode of the fifth diode is connected to the output terminal of the first power source, the cathode of the fifth diode, one end of the first capacitor, one end of the second capacitor and the One end of a third capacitor is connected to a first terminal of the DC-DC converter, and one end of the fourth capacitor, one end of the fifth capacitor, one end of the sixth capacitor, one end of the seventh capacitor, and the first The other end of the inductor is connected to the fourth terminal of the DC-DC converter, the cathode of the Zener diode and one end of the first inductor are connected to the second terminal of the DC-DC converter, the other end of the first capacitor; the other end of the second capacitor, the other end of the third capacitor, the other end of the fourth capacitor, the other end of the fifth capacitor, the other end of the sixth capacitor, the other end of the seventh capacitor, the anode of the first Zener diode; A fifth terminal of the DC-DC converter and a third terminal of the DC-DC converter provide a suction fan driving device for a cleaning vehicle, characterized in that ground power is supplied.

In addition, the first terminal of the DC-DC converter is applied with the first power, and the second terminal of the DC-DC converter is output with the second power. do.

Also, a ninth resistor; tenth resistor; A first photo coupler (coupler) is further included, wherein one end of the light emitting part of the first photo coupler is connected to the other end of the ninth resistor, and the other end of the light emitting part of the first photo coupler is the speed sensor. is connected to an output terminal of the tenth resistor, the other end of the tenth resistor is connected to one end of the light receiving unit of the first photocoupler and a first input terminal of the control unit, a first power is supplied to one end of the ninth resistor, and the tenth resistor It provides a suction fan driving device for a cleaning vehicle, characterized in that a second power is supplied to one end of the first photo coupler, and a ground power is supplied to the other end of the light receiving unit of the first photo coupler.

In addition, an 11th resistor; twelfth resistor; A second photo coupler is further included, wherein one end of the light emitting part of the second photo coupler is connected to the other end of the eleventh resistor, and the other end of the light emitting part of the second photo coupler is connected to the output terminal of the reverse gear operation detection sensor. The other end of the twelfth resistor is connected to one end of the light receiving unit of the second photocoupler and the second input end of the control unit, the first power is supplied to one end of the eleventh resistor, and the other end of the twelfth resistor is connected to A second power is supplied, and a ground power is supplied to the other end of the light receiving unit of the second photo coupler.

In addition, the first valve is positioned between the second driving unit and a second power source, and the second valve is positioned between the second power source and an oil tank. provide a driving device.

In addition, the present invention includes the steps of the clutch connecting the rotation shaft of the suction fan and the second driving unit; rotating the suction fan by the second driving unit; It provides a driving method of a suction fan driving apparatus for a cleaning vehicle, comprising: rotating the first driving unit as the suction fan rotates.

In addition, after the step of rotating the suction fan by the second driving unit, the step of sucking air through the suction port; Filtering the air by a filter; provides a driving method of a suction fan driving apparatus of a cleaning vehicle, characterized in that it further comprises.

In addition, prior to the step of the clutch connecting the suction fan and the rotation shaft of the second driving unit, the step of rotating the wheel of the vehicle; driving a second power source by the rotational force of the wheel; It provides a driving method of a suction fan driving device for a cleaning vehicle, characterized in that it further comprises; operating the second driving unit by the second power source.

In addition, before the step of the clutch connecting the suction fan and the rotation shaft of the second driving unit, the step of checking whether the wheel of the vehicle rotates; disconnecting, by the clutch, the connection between the suction fan and the rotation shaft of the second driving unit when the wheels of the vehicle do not rotate; providing power to the first driving unit by the first power source; There is provided a method of driving a suction fan driving device for a cleaning vehicle, further comprising: rotating the suction fan by a first driving unit.

In addition, before the step of connecting the rotation shaft of the suction fan and the second driving unit by the clutch, the method comprising: confirming whether the control unit receives a speed signal from the speed sensor; checking whether the control unit receives a reverse signal from the reverse gear operation detection sensor; When the speed signal is received from the speed detection sensor and the reverse signal is not received from the reverse gear operation detection sensor, the control unit opens the first valve and closes the second valve; characterized by further comprising: It provides a driving method of a suction fan driving device of a cleaning vehicle comprising:

In addition, after confirming whether the control unit receives the reverse signal from the reverse gear operation detection sensor, when the speed signal is received from the speed detection sensor and the reverse signal is not received from the reverse gear operation detection sensor, the It provides a method of driving a suction fan driving apparatus for a cleaning vehicle, characterized in that it further comprises; the control unit closing the first valve and opening the second valve.

In addition, after confirming whether the control unit receives the speed signal from the speed sensor, if the speed signal is not received from the speed sensor, the control unit releases the connection between the suction fan and the rotation shaft of the second driving unit Controlling the clutch so as to provide a driving method of the suction fan driving device of the cleaning vehicle, characterized in that it further comprises.

In addition, after confirming whether the control unit receives the reverse signal from the reverse gear operation detection sensor, if the speed signal is not received from the speed detection sensor, the control unit supplies a high signal through a fourth output terminal; In response to receiving the speed sensor from the speed sensor, the control unit supplies a low signal through the fourth output terminal.

In addition, after confirming whether the control unit receives the reverse signal from the reverse gear operation detection sensor, the control unit receives the speed signal from the speed detection sensor and receives the reverse signal from the reverse gear operation detection sensor, the control unit supplying a high signal to a first output terminal of the and supplying a low signal to a second output terminal of the control unit; supplying a low signal to a first output terminal of the control unit and a high signal to a second output terminal of the control unit when receiving the speed signal from the speed sensor and receiving the reverse signal from the reverse gear operation detection sensor It provides a method of driving a suction fan driving device of a cleaning vehicle, characterized in that it further comprises.

In addition, after confirming whether the control unit receives the reverse signal from the reverse gear operation detection sensor, if the speed signal is not applied from the speed detection sensor, supplying a low signal to the third output terminal of the control unit; It provides a driving method of the suction fan driving device of the cleaning vehicle, characterized in that it further comprises.

In addition, the first driving unit provides a driving method of the suction fan driving device of the cleaning vehicle, characterized in that the electric motor (motor).

In addition, the first driving unit provides a driving method of the suction fan driving device of the cleaning vehicle, characterized in that the DC motor.

In addition, the second power source provides a driving method of the suction fan driving device of the cleaning vehicle, characterized in that the hydraulic pump (pump).

In addition, the first power source provides a driving method of the suction fan driving device of the cleaning vehicle, characterized in that the battery (battery).

In addition, the present invention is a suction fan (fan); a first driving unit connected to the center of the suction fan; a second driving unit connected to the center of the suction fan; It provides a suction fan driving device for a cleaning vehicle comprising a; a filter (filer) disposed between the suction port and the suction fan.

In addition, the suction port may include an upper suction port provided at an upper portion of the cleaning vehicle; a first side suction port provided on one side of the cleaning vehicle; It provides a suction fan driving device for a cleaning vehicle, characterized in that it includes; a second side suction port provided on the other side of the cleaning vehicle.

In addition, the width length of the upper suction port is 0.5 to 1 times the upper width length of the cleaning vehicle, the height length of the first side suction port is 0.5 to 1 times the height length of the side of the cleaning vehicle, the second side suction port The height length of the cleaning vehicle provides a suction fan driving device for a cleaning vehicle, characterized in that 0.5 to 1 times the height length of the side of the cleaning vehicle.

In addition, there is provided a suction fan driving device for a cleaning vehicle, characterized in that it further comprises; a lower suction unit having an air passage separated from the suction fan.

In addition, there is provided a suction fan driving device for the cleaning vehicle further comprising; a second power source for providing a driving force to the second driving unit.

In addition, the second power source provides a suction fan driving device for a cleaning vehicle, characterized in that the hydraulic pump (pump).

In addition, there is provided a suction fan driving device for a cleaning vehicle, characterized in that it further comprises; a speed increase unit for supplying the hydraulic pump by increasing the rotational force according to the rotation of the wheel of the vehicle.

In addition, there is provided a suction fan driving device for the cleaning vehicle further comprising; a first power source that provides a driving force to the first driving unit.

In addition, the first power source provides a suction fan driving device for a cleaning vehicle, characterized in that the battery (battery).

In addition, the battery provides a suction fan driving device for a cleaning vehicle, characterized in that the secondary battery.

In addition, there is provided a suction fan driving device for a cleaning vehicle, characterized in that it further comprises; a control unit for controlling the operation of the first driving unit and the second driving unit.

In addition, it further includes a reverse gear operation detection sensor, wherein the control unit receives the speed signal from the speed detection sensor and when the reverse signal is not received from the reverse gear operation detection sensor, opens a first valve and 2 closes valve 2 so that the clutch is connected, receives the speed signal from the speed detection sensor and receives the reverse signal from the reverse gear operation detection sensor, closes the first valve and opens the second valve and the clutch provides a suction fan driving device for a cleaning vehicle, characterized in that the connection is blocked.

In addition, it provides a suction fan driving device for a cleaning vehicle, characterized in that it further comprises a DC-DC converter that receives the first power of the first power source and converts it into the second power used for driving the circuit.

Also, a fifth diode; a first capacitor; a second capacitor; a third capacitor; a fourth capacitor; a fifth capacitor; a sixth capacitor; a seventh capacitor; a first zener diode; A first inductor (inductor); further comprising, the anode of the fifth diode is connected to the output terminal of the first power source, the cathode of the fifth diode, one end of the first capacitor, one end of the second capacitor and the One end of a third capacitor is connected to a first terminal of the DC-DC converter, and one end of the fourth capacitor, one end of the fifth capacitor, one end of the sixth capacitor, one end of the seventh capacitor, and the first The other end of the inductor is connected to the fourth terminal of the DC-DC converter, the cathode of the Zener diode and one end of the first inductor are connected to the second terminal of the DC-DC converter, the other end of the first capacitor; the other end of the second capacitor, the other end of the third capacitor, the other end of the fourth capacitor, the other end of the fifth capacitor, the other end of the sixth capacitor, the other end of the seventh capacitor, the anode of the first Zener diode; A fifth terminal of the DC-DC converter and a third terminal of the DC-DC converter provide a suction fan driving device for a cleaning vehicle, characterized in that ground power is supplied.

In addition, the first capacitor, the second capacitor, the fourth capacitor, and the fifth capacitor provide a suction fan driving apparatus for a cleaning vehicle, characterized in that the polarity capacitor.

In addition, the first valve is positioned between the second driving unit and a second power source, and the second valve is positioned between the second power source and an oil tank. provide a driving device.

In addition, there is provided a suction fan driving device for a cleaning vehicle, characterized in that the oil that has passed through the second driving unit is recovered to the oil tank.

In addition, the present invention includes the steps of the clutch connecting the rotation shaft of the suction fan and the second driving unit; rotating the wheels of the vehicle; step of the speed increase device increasing the rotational force of the wheel; driving a second power source by the rotational force of the wheel; operating the second driving unit by the second power source; rotating the suction fan by the second driving unit; rotating the first driving unit as the suction fan rotates; It provides a driving method of a suction fan driving device for a cleaning vehicle, comprising the step of charging the first power source.

In addition, after the step of rotating the suction fan by the second driving unit, the step of sucking air through the suction port; Filtering the air by a filter; provides a driving method of a suction fan driving apparatus of a cleaning vehicle, characterized in that it further comprises.

In addition, the filter provides a driving method of a suction fan driving device of a cleaning vehicle, characterized in that disposed between the suction port and the suction fan.

In addition, there is provided a driving method of the suction fan driving device of the cleaning vehicle, characterized in that the plurality of suction ports.

In addition, there is provided a driving method of the suction fan driving device of the cleaning vehicle, characterized in that the suction port faces the front of the cleaning vehicle.

In addition, the suction port may include an upper suction port provided at an upper portion of the cleaning vehicle; a first side suction port provided on the other side of the cleaning vehicle; A second side suction port provided on the other side of the cleaning vehicle; provides a driving method of a suction fan driving device for a cleaning vehicle, characterized in that it comprises a.

In addition, the width length of the upper suction port is 0.5 to 1 times the upper width length of the cleaning vehicle, the height length of the first side suction port is 0.5 to 1 times the height length of the side of the cleaning vehicle, the second side suction port The height length of the cleaning vehicle provides a driving method of the suction fan driving device, characterized in that 0.5 to 1 times the height length of the side of the cleaning vehicle.

In addition, the clutch provides a driving method of the suction fan driving device of the cleaning vehicle, characterized in that disposed between the second driving unit and the suction fan.

In addition, before the step of connecting the rotation shaft of the suction fan and the second driving unit by the clutch, the method comprising: confirming whether the control unit receives a speed signal from the speed sensor; checking whether the control unit receives a reverse signal from the reverse gear operation detection sensor; When the speed signal is received from the speed detection sensor and the reverse signal is not received from the reverse gear operation detection sensor, the control unit opens the first valve and closes the second valve; characterized by further comprising: It provides a driving method of a suction fan driving device of a cleaning vehicle comprising:

In addition, the first power source provides a driving method of the suction fan driving device of the cleaning vehicle, characterized in that the battery (battery).

In addition, the battery provides a driving method of the suction fan driving device of the cleaning vehicle, characterized in that the secondary battery.

In addition, the present invention is a suction fan (fan); a first driving unit connected to the center of the suction fan; a second driving unit connected to the center of the suction fan; a filter disposed between the suction port and the suction fan; a second power source providing a driving force to the second driving unit; It provides a suction fan driving device for a cleaning vehicle comprising a; a forward/reverse safety valve disposed between one side and the other side of the second power source.

In addition, the second driving unit provides a hydraulic motor (motor), the second power source provides a suction fan driving device for a cleaning vehicle, characterized in that the hydraulic pump (pump).

In addition, the present invention is a suction fan; an electric motor connected to the center of the suction fan; a hydraulic motor connected to the center of the suction fan; a filter disposed between the suction port and the suction fan; a hydraulic pump providing driving force to the hydraulic motor; and a forward/reverse safety valve disposed between the first and second hydraulic ports of the hydraulic pump.

In addition, the first inlet of the forward/reverse safety valve is connected to the first hydraulic port of the hydraulic pump, and the second inlet of the forward/reverse safety valve is connected to the second hydraulic port. provides

In addition, the first oil port of the hydraulic motor is connected to the first hydraulic port, and the second oil port of the hydraulic motor is connected to the second hydraulic port.

In addition, the forward and reverse safety valve includes a first passage; a second passage; a third passage disposed between the first passage and the second passage; a shuttle provided in the third passage; a first movable body provided inside the first passage; It provides a suction fan driving device for a cleaning vehicle, characterized in that it includes; a second movable body provided in the second passage.

In addition, the third passage has a smaller cross-sectional area of the passage through which the fluid moves than the first passage, and the third passage has a smaller cross-sectional area of the passage through which the fluid moves than the second passage. A suction fan drive device for a cleaning vehicle is provided.

Also, in the first movable body, a maximum cross-sectional area measured in a direction perpendicular to an imaginary axis passing through the center of the first passage is larger than a cross-sectional area of a passage through which the fluid of the third passage moves, and in the second movable body, the A maximum cross-sectional area measured in a direction perpendicular to an imaginary axis passing through the center of the second passage is larger than a cross-sectional area of the passage through which the fluid of the third passage moves.

In addition, the first elastic member is provided in the first passage, the first elastic member for providing a restoring force in the shuttle direction with respect to the first movable body; and a second elastic member provided inside the second passage and providing a restoring force in the shuttle direction with respect to the second moving body.

In addition, the third passage provides a suction fan driving device of the cleaning vehicle, characterized in that connected to a reserve tank (reserve tank).

In addition, the hydraulic pump provides a suction fan driving device for a cleaning vehicle, characterized in that connected to the reserve tank.

In addition, the present invention is a first inlet; a second inlet; a first passage connected to the first inlet; a second passage connected to the second inlet; It provides a bidirectional pump block (block) used in a suction fan driving device of a cleaning vehicle comprising a; a third passage provided between the first passage and the second passage.

In addition, a shuttle provided inside the third passage; a first movable body provided inside the first passage; It provides a bidirectional pump block used in a suction fan driving device of a cleaning vehicle, characterized in that it further comprises; a second movable body provided inside the second passage.

In addition, the third passage has a smaller cross-sectional area of the passage through which the fluid moves than the first passage, and the third passage has a smaller cross-sectional area of the passage through which the fluid moves than the second passage. A bidirectional pump block used in a suction fan drive device of a cleaning vehicle is provided.

Also, in the first movable body, a maximum cross-sectional area measured in a direction perpendicular to an imaginary axis passing through the center of the first passage is larger than a cross-sectional area of a passage through which the fluid of the third passage moves, and in the second movable body, the The maximum cross-sectional area measured in a direction perpendicular to an imaginary axis passing through the center of the second passage is larger than the cross-sectional area of the passage through which the fluid of the third passage moves. A pump block is provided.

In addition, the first elastic member is provided in the first passage, the first elastic member for providing a restoring force in the shuttle direction with respect to the first movable body; A bidirectional pump block used in a suction fan driving device of a cleaning vehicle, characterized in that it further comprises; a second elastic member provided inside the second passage and providing a restoring force in the shuttle direction with respect to the second moving body. provides

In addition, the first inlet is connected to the first hydraulic port of the hydraulic pump, and the second inlet is connected to the second hydraulic port of the hydraulic pump. to provide.

In addition, the third passage provides a bidirectional pump block used in a suction fan driving device of a cleaning vehicle, characterized in that it is connected to the reserve tank.

In addition, the reserve tank provides a bidirectional pump block used in a suction fan driving device of a cleaning vehicle, characterized in that provided in the pump block body.

In addition, the reserve tank provides a bidirectional pump block used in a suction fan driving device of a cleaning vehicle, characterized in that it is connected to a hydraulic pump.

In addition, the present invention comprises the steps of rotating the hydraulic pump in one direction; Provided is a method of driving a suction fan driving apparatus for a cleaning vehicle, comprising: moving a first movable body in the first passage of the bidirectional pump block to push the shuttle in the direction of the second passage.

Further, through the step of moving the first movable body in the first passage of the bidirectional pump block to push the shuttle in the direction of the second passage, the space between the first passage and the third passage is closed, and the second passage and the third passage are closed. There is provided a driving method of a suction fan driving device of a cleaning vehicle, characterized in that the passage is opened.

In addition, after the step of rotating the hydraulic pump in one direction, the step of rotating the hydraulic motor in one direction; provides a driving method of the suction fan driving apparatus of the cleaning vehicle, characterized in that it further comprises.

In addition, the present invention comprises the steps of rotating the hydraulic pump in the other direction; Provided is a method of driving a suction fan driving apparatus for a cleaning vehicle, comprising: moving a second movable body in the second passage of the bidirectional pump block to push the shuttle in the direction of the first passage.

Further, through the step of moving the second movable body in the second passage of the bidirectional pump block to push the shuttle in the direction of the first passage, the space between the second passage and the third passage is closed, and the first passage and the third passage are closed. There is provided a driving method of a suction fan driving device of a cleaning vehicle, characterized in that the passage is opened.

In addition, after the step of rotating the hydraulic pump in the other direction, the step of rotating the hydraulic motor in the other direction; provides a driving method of the suction fan driving apparatus of the cleaning vehicle, characterized in that it further comprises.

In addition, the first hydraulic port of the hydraulic pump is connected to the first inlet of the bidirectional pump block, the second hydraulic port of the hydraulic pump is connected to the second inlet of the bidirectional pump block, and the first oil port of the hydraulic motor is It provides a driving method of a suction fan driving apparatus for a cleaning vehicle, which is connected to the first hydraulic port, and the second oil port of the hydraulic motor is connected to the second hydraulic port.

In addition, the third passage has a smaller cross-sectional area of the passage through which the fluid moves than the first passage, the third passage has a smaller cross-sectional area of the passage through which the fluid moves than the second passage, and the first movable body The maximum cross-sectional area measured in a direction perpendicular to an imaginary axis passing through the center of the first passage is larger than the cross-sectional area of the passage through which the fluid of the third passage moves, and the center of the second passage in the second movable body is A maximum cross-sectional area measured in a direction perpendicular to an imaginary axis passing through is larger than a cross-sectional area of a passage through which the fluid of the third passage moves.

In addition, the present invention is a suction fan (fan); a first driving unit connected to the center of the suction fan; a second driving unit connected to the center of the suction fan; a filter disposed between the suction port and the suction fan; a second power source providing a driving force to the second driving unit; and a forward/reverse safety valve disposed between one side and the other side of the second power source, wherein the forward/reverse safety valve includes a first passage; a second passage; a third passage disposed between the first passage and the second passage; a shuttle provided in the third passage; a first movable body provided inside the first passage; and a second movable body provided inside the second passage, wherein the first movable body has a spherical shape, and the second movable body has a spherical shape. provides

In addition, the first elastic member is provided in the first passage, the first elastic member for providing a restoring force in the shuttle direction with respect to the first movable body; and a second elastic member provided inside the second passage and providing a restoring force in the shuttle direction with respect to the second moving body.

Also, the first elastic member is a spring, and the second elastic member is a spring.

In addition, the present invention is a first inlet; a second inlet; a first passage connected to the first inlet; a second passage connected to the second inlet; a third passage provided between the first passage and the second passage; a shuttle provided inside the third passage; a first movable body provided inside the first passage; a second movable body provided inside the second passage, wherein the first movable body is manufactured in a spherical shape, and the second movable body is manufactured in a spherical shape. Provides a bidirectional pump block to be used.

In addition, the first elastic member is provided in the first passage, the first elastic member for providing a restoring force in the shuttle direction with respect to the first movable body; A bidirectional pump block used in a suction fan driving device of a cleaning vehicle, characterized in that it further comprises; a second elastic member provided inside the second passage and providing a restoring force in the shuttle direction with respect to the second moving body. provides

In addition, the first elastic member is a spring, and the second elastic member provides a bidirectional pump block used in a suction fan driving device of a cleaning vehicle, characterized in that the spring.

In addition, the present invention comprises the steps of rotating the hydraulic pump in one direction; and a step of moving the first movable body in the first passage of the bidirectional pump block to push the shuttle in the direction of the second passage, wherein a restoring force is provided in the first passage to the first movable body in the shuttle direction A first elastic member is provided, and a second elastic member for providing a restoring force in the shuttle direction with respect to the second movable body is provided inside the second passage, the first movable body is manufactured in a spherical shape, 2 The movable body provides a driving method of a suction fan driving device of a cleaning vehicle, characterized in that it is manufactured in a spherical shape.

In addition, the present invention comprises the steps of rotating the hydraulic pump in the other direction; and pushing the shuttle in the direction of the first passage by moving a second movable body in the second passage of the bidirectional pump block, wherein a restoring force is provided in the first passage to the first movable body in the shuttle direction. A first elastic member is provided, and a second elastic member for providing a restoring force in the shuttle direction with respect to the second movable body is provided inside the second passage, the first movable body is manufactured in a spherical shape, 2 The movable body provides a driving method of a suction fan driving device of a cleaning vehicle, characterized in that it is manufactured in a spherical shape.

In addition, the first elastic member is a spring (spring), the second elastic member is a spring, the hydraulic pump is connected to the reserve tank, the third passage is connected to the reserve tank (reserve tank), the reserve The tank provides a driving method of a suction fan driving device of a cleaning vehicle, characterized in that the tank is provided in the pump block body.

According to the suction fan driving apparatus and the driving method of the cleaning vehicle according to the present invention, the following effects are obtained.

First, there is an effect of cleaning foreign substances on the road and at the same time removing fine dust in the air. In addition, there is an effect that the size of the vehicle is miniaturized to minimize the disturbance of the movement of surrounding vehicles.

Second, a large amount of external air is sucked through a suction port formed in a large area corresponding to the upper and side surfaces of the vehicle, thereby improving the efficiency of removing fine dust in the air.

Third, by generating hydraulic pressure using the driving force of the vehicle to rotate the suction fan, there is an effect that the rotational force of the suction fan is improved. Therefore, it is possible to suck more air compared to a conventional fine dust removal vehicle, and thus an excellent effect in removing fine dust in the atmosphere can be expected.

Fourth, in a situation in which the suction fan is driven using hydraulic pressure, power generated from a DC motor rotating together is charged to a battery, thereby maximizing the efficiency of using the battery.

Fifth, when the cleaning vehicle is stopped, the suction fan is driven using a DC motor, so that fine dust can be removed by sucking the outside air not only when the vehicle is running but also when the vehicle is stopped. In particular, when the suction fan is driven using the DC motor, the clutch connection between the hydraulic motor and the suction fan is released, so that the load applied to the DC motor is reduced.

Sixth, in situations such as when the vehicle is going downhill, hydraulic pressure can be generated using only natural force, so that fine dust can be removed more environmentally friendly.

Seventh, by separating the air passage of the lower suction unit that sucks dust scattered from the road and the air passage that sucks air in the atmosphere, there is an effect that can increase the service life of the filter for removing fine dust in the atmosphere.

Eighth, when using a bidirectional pump block integrally provided with a forward and reverse safety valve, the hydraulic circuit part can be simplified and applied. Accordingly, the volume occupied by the hydraulic circuit in the vehicle can be reduced, and the number of parts used can be reduced, so that the probability of occurrence of a failure can be remarkably improved. Furthermore, the amount of hydraulic oil used can be reduced, so that oil leakage can be prevented, and the effect of enabling bidirectional rotation of the hydraulic pump can be achieved.

Ninth, when a bidirectional pump block is used, the number of valves can be drastically reduced, so that the pressure loss of hydraulic pressure generated by the pump can be reduced. In addition, since most maintenance can be performed on the hydraulic pump side, there is an effect of improving the convenience of management.

1 is a diagram schematically showing the sizes of fine dust and ultrafine dust.
FIG. 2 is a view showing a state of a vehicle driving on a road.
3 is a view showing a state of a conventional water spraying vehicle that sprays water on a road.
4 is a view showing the state of a conventional small road surface cleaning vehicle for cleaning the road surface.
FIG. 5 is a view showing a state of a conventional fine dust removal vehicle that removes fine dust by sucking air while driving or stopping.
6 is a view showing the overall appearance of the cleaning vehicle to which the present invention is applied.
7 is a view showing a front view of the cleaning vehicle to which the present invention is applied.
8 is a view showing a view from the rear of the cleaning vehicle to which the present invention is applied.
9 is a view showing a view from the left of the cleaning vehicle to which the present invention is applied.
10 is a view showing a view from the right of the cleaning vehicle to which the present invention is applied.
11 is a view showing a view from above of a cleaning vehicle to which the present invention is applied.
12 is a view showing a view from below of a cleaning vehicle to which the present invention is applied.
13 is a view briefly showing the appearance of the suction fan and the suction port inside the cleaning vehicle to which the present invention is applied.
14 is a view showing a state of a second power source connected to the wheel of the cleaning vehicle.
15 is a diagram schematically illustrating a structure in which a second power source of a suction fan driving device for a cleaning vehicle according to the present invention supplies power.
16 is a diagram illustrating a movement path of power generated from a second power source when the cleaning vehicle travels forward.
17 is a view showing a movement path of hydraulic pressure generated from the second power source when the cleaning vehicle travels in reverse.
FIG. 18 is a hydraulic circuit diagram showing FIG. 15 in more detail.
19 is a hydraulic circuit diagram in which the circuit configuration is simply modified by converting the 'SV' part of FIG. 18 to a forward/reverse switching valve.
20 is a view showing the internal configuration of the forward/reverse safety valve in order.
FIG. 21 is a diagram schematically showing only a passage while omitting components provided in the interior of the forward/reverse safety valve.
22 is a view showing a state in which a bidirectional pump block integrally provided with a forward/reverse safety valve and the like is connected to a hydraulic pump or the like.
23 is a diagram schematically showing the appearance of one surface of the bidirectional pump block.
24 is a diagram schematically showing the other surface of the bidirectional pump block.
25 and 26 are views showing the operation of the forward/reverse safety valve provided inside the bidirectional pump block.
27 and 28 are flowcharts schematically illustrating the operation of the hydraulic motor according to the rotation of the hydraulic pump in the present invention employing the forward/reverse safety valve.
29 is a view showing a connection relationship between the suction fan, the first driving unit, and the second driving unit in the suction fan driving device for a cleaning vehicle according to the present invention.
30 is a view showing a control circuit diagram for controlling the operation of the suction fan in the suction fan driving device of the cleaning vehicle according to the present invention.
FIG. 31 is an enlarged view showing the speedy relay device of FIG. 30 .
FIG. 32 is an enlarged view showing the photo coupler of FIG. 30 .
FIG. 33 is an enlarged view of the DC-DC converter of FIG. 30 .
34 is a flowchart illustrating a method of driving a suction fan driving device for a cleaning vehicle according to the present invention.
35 is a flowchart illustrating a more detailed driving method of a suction fan driving device of a cleaning vehicle according to sensor signal recognition.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Since the present invention can have various changes and can have various forms, specific embodiments are illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to the specific disclosed form, it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention.

In addition, in the description of the present invention, terms such as "first" and "second" are used only for the purpose of distinguishing one component from other components, and are not used to limit any meaning. And, unless the context clearly dictates otherwise, the singular expression includes the plural expression, and terms such as "comprises" or "have" refer to features, numbers, steps, operations, components, parts or It is to be understood that this is intended to indicate the existence of any combination thereof, and does not preclude the possibility of the presence or addition of one or more other features or numbers, steps, operations, components, parts, or combinations thereof.

Roads 3 to 5 are views showing various conventional methods for removing dust from the road or the atmosphere. First, FIG. 3 shows the state of a conventional water spraying vehicle that sprays water on the road. And, FIG. 4 is a view showing the state of a conventional small road surface cleaning vehicle for cleaning the road surface, and FIG. 5 is a view showing the state of a conventional fine dust removal vehicle that removes fine dust by sucking air while driving or stopping am.

As described above, a lot of dust is accumulated on the road due to wear of tires due to the operation of the vehicle 10 , and the amount of fine dust contained in the air is increasing due to the scattering of the dust. Therefore, periodically removing the dust accumulated on the road is one of the effective means to prevent air pollution. In some cases, accumulated dust was removed by spraying on the edges, and dust was also removed by sweeping away foreign substances on the road using a conventional small road surface cleaning vehicle 15 as shown in FIG. 4 .

However, the conventional water spray vehicle 11 has a limit in cleaning a large area of the road because the water W to be carried is limited, and the conventional small road surface cleaning vehicle 15 is a circular sweeper ( 16), there was no problem of loading water, but there was a problem that dust was scattered back into the air due to the operation of the circular sweeper 16. And, above all, the two conventional water spraying vehicles 11 and the conventional small road cleaning vehicle 15 have a disadvantage in that they cannot remove fine dust floating in the air.

In order to solve the fine dust floating in the air, a conventional fine dust removal vehicle 13 that removes dust by sucking the external air as shown in FIG. 5 has recently been developed. And, such a conventional fine dust removal vehicle 13 uses a suction hole 14 formed in each part of the vehicle to suck the outside air, and uses a filtration device to remove fine dust from the air. Airborne dust was removed. However, the conventional fine dust removal vehicle 13 has a considerable size, so there are many difficulties in operation, and there is a problem in that there are many restrictions on the movement of the vehicle 10 and the like on the road. For reference, this was also recognized as a problem in the conventional water injection vehicle 11 .

Therefore, it is necessary to develop a cleaning vehicle that complements the disadvantages of the conventional cleaning vehicle and combines the advantages, and as an alternative, the present invention that can remove dust accumulated on the road and remove fine dust in the air at the same time is applied A cleaning vehicle was developed.

Hereinafter, a cleaning vehicle to which the present invention is applied will be looked at, and a suction fan driving device and a driving method thereof for a cleaning vehicle according to the present invention will be described in more detail.

6 to 12 are views showing the exterior of the vehicle to which the suction fan driving device of the cleaning vehicle according to the present invention is applied, and FIG. 6 is a view showing the overall appearance of the cleaning vehicle to which the present invention is applied, and FIG. 7 is the present invention It is a view showing a front view of the cleaning vehicle to which this is applied, and FIG. 8 is a view showing a rear view of the cleaning vehicle to which the present invention is applied. And, Figure 9 is a view showing a view from the left of the cleaning vehicle to which the present invention is applied, Figure 10 is a view showing a view from the right of the cleaning vehicle to which the present invention is applied, Figure 11 is a cleaning vehicle to which the present invention is applied 12 is a view showing a view from below of a cleaning vehicle to which the present invention is applied.

The cleaning vehicle 1000 to which the present invention is applied is a small cleaning vehicle operated by electricity rather than an internal combustion engine as power, and a circular brush 200 for removing foreign substances such as dirt from the road surface is provided on the front of the vehicle. It is available. In addition, a lower suction unit 130 is provided at the lower portion of the vehicle in order to suck the foreign substances swept up by the brush 200 .

Older, the outside of the cleaning vehicle 1000 to which the present invention is applied may be provided with a plurality of suction ports serving as a passage for sucking outside air into the interior according to the operation of the suction fan 300 provided therein. can Specifically, an upper suction port 110 may be formed on the upper portion of the cleaning vehicle 1000 to which the present invention is applied, and a first side suction port 121 is provided on one side of the cleaning vehicle, and a second side surface is provided on the other side of the cleaning vehicle. A suction port 122 may be formed. Accordingly, the cleaning vehicle 1000 to which the present invention is applied can also remove fine dust floating in the air, unlike the conventional small road surface cleaning vehicle 15 .

The upper suction port 110 provided in the upper part of the cleaning vehicle 1000 to which the present invention is applied may have a width length of 0.5 to 1 times the upper width length of the cleaning vehicle, preferably cleaning to suck a lot of external air It may be formed to have substantially the same width as the upper width of the vehicle. In addition, the height length of each of the first side suction port 121 and the second side suction port 122 may also be formed to be 0.5 to 1 times the side height length of the cleaning vehicle, preferably approximately the same as the side height length of the cleaning vehicle It may be formed in height. The suction fan driving device of the cleaning vehicle according to the present invention through the upper suction port 110, the first side suction port 121, and the second side suction port 122 formed in such a large area, a large amount of outside air into the interior of the cleaning vehicle. It can be inhaled, thereby improving the performance of removing fine dust in the air.

For reference, in the suction fan driving device for a cleaning vehicle according to the present invention, as the suction fan 300 operates, external air passes through the upper suction port 110 , the first side suction port 121 , and the second side suction port 122 . The passage through which is sucked and the air intake passage of the lower suction unit 130 may be separated from each other. Scattered dust is sucked into the lower suction unit 130 by using the brush 200 , and the dust may have larger particles than dust floating in the air and floating in the air. Accordingly, by separating the air passage of the lower suction unit 130 from the air passages of the upper suction port 110 , the first side suction port 121 , and the second side suction port 122 for sucking the external air, fine dust in the atmosphere is separated. It is possible to prevent the contamination of the filter that removes the contamination from proceeding quickly, and it is possible to increase the service life of the filter.

A hydraulic pressure generating device 140 for operating the suction fan 300 may be provided on the axle, wheel 17 or wheel 18 of the cleaning vehicle 1000 to which the present invention is applied, and this hydraulic pressure generating device 140 ) will be looked at in more detail through the drawings below.

13 is a view briefly showing the appearance of the suction fan and the suction port inside the cleaning vehicle.

When the exterior of the vehicle is lifted, the inside of the cleaning vehicle 1000 to which the present invention is applied as shown in the drawing can be checked, and the upper suction port 110 , the first side suction port 121 , and the second side serving as a passage for sucking the outside air. It can be seen that the suction port 122 is connected to the suction fan 300 through a pipe line.

When the suction fan 300 rotates, a large amount of outside air is sucked in through the upper suction port 110, the first side suction port 121, and the second side suction port 122, and the air sucked in this way is the suction port and the suction fan ( 300) is filtered and discharged through a filter (not shown) disposed between them.

The basic power required for the operation of the suction fan 300 is provided through the driving force of the vehicle, and for this purpose, the speed increase unit 141 may be connected to the wheel 17 of the cleaning vehicle.

14 is a view showing a state of a second power source connected to the wheel of the cleaning vehicle.

In the suction fan driving apparatus for a cleaning vehicle according to the present invention, the basic power required for the operation of the suction fan 300 may be obtained using a hydraulic pump 142 which is a second power source utilizing the driving force of the vehicle. More specifically, the hydraulic pump 142 generates hydraulic pressure using the rotational force of the wheel 17 or the wheel 18 of the vehicle rotated by the traveling motor 19 of the cleaning vehicle 1000 to which the present invention is applied, In this process, a speed increase unit 141 may be further provided between the wheels 18 or 17 of the vehicle and the hydraulic pump 142 to increase the rotational force. In this way, the suction fan 300 operates using the hydraulic pressure generated by the hydraulic pump 142 in detail will be described with reference to the drawings below.

15 is a diagram schematically illustrating a structure in which a second power source of a suction fan driving device for a cleaning vehicle according to the present invention supplies power.

First, the first driving unit may be connected to the center of one side of the suction fan 300 , and the second driving unit may be connected to the center of the other side of the suction fan 300 . Here, the first driving unit may be a DC motor 410 operating according to the supply of DC power, and the second driving unit may be a hydraulic motor 144 operating according to the supply of oil. In addition, a first valve 145 may be provided between the second driving unit and the second power source in order to control the flow of supplied oil, and a second valve may be provided between the second power source and the oil tank 143 . (146) may be provided.

The suction fan driving device of the cleaning vehicle according to the present invention controls the opening and closing of the first valve 145 and the second valve 146 according to the driving conditions of the vehicle, so that the suction fan 300 is operated by the second driving unit or the second driving unit. It is selectively operated by one driving unit, and the change in oil flow according to the opening and closing of the first valve 145 and the second valve 146 will be described with reference to the drawings below. For reference, although not shown in the drawings, a clutch 500 may be provided between the hydraulic motor 144 and the suction fan 300 , and the hydraulic pump 142 moves in both directions according to the movement of the wheel 17 . It may be manufactured by improving a motor using hydraulic pressure to enable rotation. In addition, the DC motor 410 is to be distinguished from the traveling motor 19, the DC motor 410 is a motor that operates the suction fan 300, and the traveling motor 19 is a cleaning vehicle 1000 to which the present invention is applied. It should be noted that this is the motor that supplies the traveling driving force.

16 is a diagram illustrating a movement path of power generated from a second power source when the cleaning vehicle travels forward.

As the traveling motor 19 operates, the wheels 17 and 18 are rotated, and the rotational force of the wheels 17 and the like is increased by the speed-up unit 141 and the hydraulic pump 142 as a second power source. will be supplied to Then, the hydraulic pump 142 sucks the oil from the oil tank 143 and pumps it. In this process, the first valve 145 is opened and the second valve 146 is closed by the controller 630 . do. Accordingly, the oil supplied by the hydraulic pump 142 circulates in the directions of the hydraulic pump 142 , the first valve 145 , the hydraulic motor 144 , and the oil tank 143 along the dotted line in the drawing, and the supply The hydraulic motor 144 rotates the suction fan 300 by the oil or hydraulic force. (indicated by 'OF' in the drawing) And, in this process, the clutch 500 engages the hydraulic motor 144 and the suction fan 300 . The rotating shaft between the fans can remain connected. For reference, the control unit 630 may confirm that the vehicle travels forward through a signal received from a speed detection sensor 621 and a signal received from a reverse gear operation detection sensor 622 .

17 is a view showing a movement path of hydraulic pressure generated from the second power source when the cleaning vehicle travels in reverse.

When the cleaning vehicle 1000 to which the present invention is applied moves backwards, the control unit 630 closes the first valve 145 and opens the second valve 146 , and then the suction fan 300 and the hydraulic motor 144 ), the clutch 500 is adjusted so that the connection between them is maintained. More specifically, the control unit 630 may detect the reverse of the vehicle by a signal received from the speed sensor 621 and the reverse gear operation detection sensor 622 . When the opening and closing of the first valve 145 and the second valve 146 are adjusted in this way, the oil OF supplied from the oil tank 143 is not supplied to the hydraulic motor 144 but is again followed by the second valve 146 . It is recovered to the oil tank 143 (indicated by 'OF' in the drawing).

The suction fan driving apparatus and the driving method of the cleaning vehicle according to the present invention provide main power required for driving the suction fan 300 by using hydraulic pressure using the rotational force of the wheels generated according to the driving of the vehicle, thereby providing the suction fan 300. can be rotated more strongly. In addition, since hydraulic pressure can be generated using only natural force in a situation in which the cleaning vehicle moves downhill, the suction fan 300 can be driven more environmentally friendly.

FIG. 18 is a hydraulic circuit diagram showing FIG. 15 in more detail, and FIG. 19 is a hydraulic circuit diagram in which the circuit configuration is simply modified by converting the 'SV' part of FIG. 18 to a forward/reverse switching valve.

As described above, in the process of providing the hydraulic pressure generated by the hydraulic pump 142, which is the second power source, to the hydraulic motor 144 by using the rotational force of the wheel 18, a relief valve, a solenoid valve, Various valves are required, such as a counter balance valve, and a conduit configuration for connecting these valves and other components is required. Even if the hydraulic circuit is configured as shown in FIG. 18, there is no major problem in the operation of the cleaning vehicle according to the present invention. In addition, the reserve tank for providing a large amount of hydraulic oil is also required to have a large size.

According to the present invention, by replacing the 'SV' part of FIG. 18 composed of various valves with the forward/reverse safety valve 700, the number of valves used can be remarkably reduced and the size of the hydraulic circuit part can also be remarkably improved.

To this end, a forward/reverse safety valve 700 may be disposed between one side and the other side of the hydraulic pump 142 as the second power source. More specifically, the first inlet 711-1 of the forward/reverse safety valve 700 is connected to the first hydraulic port 142-1 of the hydraulic pump 142 , and the second hydraulic port of the hydraulic pump 142 is connected. The forward/reverse safety valve 700 may be disposed in such a way that the second inlet 712-1 of the forward/reverse safety valve 700 is connected to the 142-2. By disposing the forward/reverse safety valve 700 in this way, when the hydraulic pump 142 sends hydraulic oil to the first oil port 144-1 of the hydraulic motor 144, the first passage 711 in the forward/reverse safety valve 700 ) and the third passage 713 are closed, and the opposite side between the second passage 712 and the third passage 713 is opened, thereby ensuring a stable operation of the hydraulic circuit part. In addition, when the hydraulic pump 142 rotates in the opposite direction to deliver hydraulic oil to the second oil port 144-2 of the hydraulic motor 144, the second passage 712 and the second passage 712 in the forward/reverse safety valve 700 Between the three passages 713 is opened, and the opposite side between the first passage 711 and the third passage 713 is closed to ensure both rotations of the hydraulic pump 142 . The internal configuration and operation of the forward/reverse safety valve 700 will be described in more detail with reference to the drawings below.

20 is a view showing the internal configuration of the forward/reverse safety valve in order.

The forward and reverse safety valve 700 applied to simplify the hydraulic circuit portion of the present invention is a first movable body 721, a shuttle (730, shuttle), a second movable body 722, a first elastic member 741, the second It may be configured to include an elastic member (742). Here, the first movable body 721 and the first elastic member 741 are disposed in the first passage 711 , and the second movable body 722 and the second elastic member 742 are disposed in the second passage 712 . and the shuttle 730 may be disposed in the third passage. In addition, the first movable body 721 and the second movable body 722 may be manufactured in a spherical shape, and the first elastic member 741 and the second elastic member 742 may have a spring selected. can

Hereinafter, the operating principle will be described in more detail, but briefly described, the forward/reverse safety valve 700 compares the pressure of the hydraulic oil flowing into the first passage 711 and the pressure of the hydraulic oil flowing into the second passage 712 . , so that the low-pressure passage communicates with the third passage 713 , a portion of the hydraulic oil is recovered to the oil tank 143 as a reserve tank. Through this, the present invention can dramatically reduce the number of parts used in the hydraulic circuit portion, thereby significantly improving the probability of occurrence of a failure.

FIG. 21 is a diagram schematically showing only a passage while omitting components provided in the interior of the forward/reverse safety valve.

The passage section of the forward/reverse safety valve 700 applied to the present invention can be largely divided into three parts. First, the third passage 713 in which the shuttle 730 is disposed, and the third passage 713 are disposed on both sides of the third passage 713. It may be divided into a first passage 711 and a second passage 712 . Here, the third passage 713 has a smaller cross-sectional area of the passage through which the fluid moves compared to the first passage 711 and the second passage 712 , and the first movable body 721 disposed in the first passage 711 . and movement of the second movable body 722 disposed in the second passage 712 may be restricted. More specifically, the first movable body 721 has a maximum cross-sectional area measured in a direction perpendicular to an imaginary axis VX passing through the center of the first passage 711 of the passage through which the fluid of the third passage 713 moves. It is larger than the cross-sectional area, and the second movable body 722 has a maximum cross-sectional area measured in a direction perpendicular to an imaginary axis VX passing through the center of the second passage 712 is the passage through which the fluid of the third passage 713 moves. may be larger than the cross-sectional area of In addition, a first inlet 711-1 may be formed in the first passage 711 , and a second inlet 712-1 may be formed in the second passage 712 , and the hydraulic pump 142 may be formed through this inlet. Alternatively, a portion of the hydraulic oil discharged by the hydraulic motor 144 may be introduced into the passage. To this end, the first inlet 711-1 of the first passage 711 may be connected to the first hydraulic port 142-1 of the hydraulic pump 142, and the second inlet 711-1 of the second passage 712 ( 712-1) may be connected to the second inlet 712-1 of the hydraulic pump 142.

22 is a view showing a state in which a bidirectional pump block integrally provided with a forward/reverse safety valve and the like is connected to a hydraulic pump or the like.

The forward and reverse safety valve 700 that can be used in the present invention to simplify the hydraulic circuit part and prevent oil leakage as well as reduce the amount of hydraulic oil used may be separately applied to the hydraulic circuit, but as shown in the figure, the bidirectional pump block 800 ) may be provided integrally with the pump block body. That is, it may be integrally provided inside the pump block body manufactured using a mold to be integrally attached to the hydraulic pump 142 . By manufacturing the bidirectional pump block in this way, the present invention can further simplify the hydraulic circuit part, and since all the valve parts are located on the pump side, the maintenance thereof is also simplified. For reference, '801' in the drawing is an oil injection port 801 for injecting hydraulic oil into the bidirectional pump block 800 .

23 is a diagram schematically showing the appearance of one side of the bidirectional pump block, and FIG. 24 is a diagram schematically showing the other side of the bidirectional pump block.

An opening 713-1 connected to the third passage 713 of the forward/reverse safety valve 700 may be formed on one surface of the bidirectional pump block 800, and the other surface connected to the hydraulic pump 142 may have a second surface. A first inlet 711-1 of the first passage 711 and a second inlet 712-1 of the second passage 712 may be formed. And, a part of the hydraulic oil discharged from the hydraulic pump 142 or the hydraulic motor 144 through the first inlet 711-1 and the second inlet 712-1 is inside the bidirectional pump block 800. It may flow into the provided forward/reverse safety valve 700 . For reference, the third passage 713 may be connected to the oil tank 143 that is a reserve tank through the opening 713 - 1 .

As described above, since the bidirectional pump block 800 includes the forward/reverse safety valve 700 and the parts necessary for driving the hydraulic circuit are integrally provided in the pump block body, when the bidirectional pump block 800 is used, the hydraulic oil In addition to reducing the amount of the hydraulic motor 144, except for the hydraulic motor 144, all other maintenance can be performed on the hydraulic pump 142 side, so the maintenance is very simple.

25 and 26 are views showing the operation of the forward/reverse safety valve provided inside the bidirectional pump block.

Although previously described briefly, the operation of the forward/reverse safety valve 700 applied to the present invention will be described in detail as follows.

In the forward and reverse safety valve 700 used in the present invention, the first elastic member 741 presses the first movable body 721 by providing a restoring force in the shuttle 730 direction, and the second elastic member 742 is the second elastic member 742 2 The moving body 722 may be pressed by providing a restoring force in the direction of the shuttle 730 . Here, the restoring force of the first elastic member 741 and the restoring force of the second elastic member 742 are equal to each other. It is located in the center of the third passage (713).

In this state, when the hydraulic pump 142 rotates in one direction, that is, pressurizes and sends hydraulic oil in the direction of the first oil port 144-1 of the hydraulic motor 144, formed on the other surface of the bidirectional pump block 800 The hydraulic oil is injected through the first inlet 711-1. In addition, the hydraulic oil that has passed through the hydraulic motor 144 is also injected through the second inlet 712-1. The forward/reverse safety valve 700 compares the two pressures so that the side with the lower pressure communicates with the third passage 713 and a part of the hydraulic oil is recovered to the oil tank 143. Since the hydraulic oil flowing into the second inlet 712-1 has a pressure loss, a gap between the second passage 712 and the third passage 713 is opened. More specifically, since the pressure of the hydraulic oil introduced into the first passage 711 through the first inlet 711-1 is higher, the first movable body 721 moves by hydraulic pressure to push the shuttle 730 The first passage 711 and the third passage 713 are closed, and on the opposite side, the shuttle 730 pushes the second movable body 722 between the second passage 712 and the third passage 713 . make it open As a result, only a portion of the hydraulic oil that has passed through the hydraulic motor 144 is recovered to the oil tank 143 . For reference, in this case, the shuttle 730 may move about 1.25 to 1.4 millimeters (mm) in the direction of the second passage 712 from the neutral position. Here, the neutral position may refer to the position of the shuttle 730 when there is no operation of the hydraulic pump 142 and only the restoring force of the first elastic member 741 and the second elastic member 742 acts. .

The reverse case can also be expected. When the hydraulic pump 142 rotates in the other direction to pressurize the hydraulic oil to the second oil port 144-2 of the hydraulic motor 144 and send it out, this time the bidirectional pump block ( The hydraulic pressure of the second passage 712 of the forward and reverse safety valve 700 in the 800 is greater than the hydraulic pressure of the first passage 711 . Accordingly, the second movable body 722 pushes the shuttle 730 in the direction of the first passage 711 , and as a result, the space between the second passage 712 and the third passage 713 is closed, and the first passage A space between the 711 and the third passage 713 is opened.

The present invention can reduce the pressure loss of hydraulic pressure generated in the entire hydraulic circuit by using the bidirectional pump block 800 integrally provided with the forward and reverse safety valve 700, and the like, and the amount of hydraulic oil used is also dramatically reduced can be reduced

27 and 28 are flowcharts schematically illustrating the operation of the hydraulic motor according to the rotation of the hydraulic pump in the present invention employing the forward/reverse safety valve.

First, when the hydraulic pump 142 rotates in one direction according to the rotation of the wheel 18 (S1-1), the hydraulic motor 144 also rotates in one direction (S1-2). And at the same time, between the first passage 711 and the third passage 713 of the forward/reverse safety valve 700 is closed, and between the second passage 712 and the third passage 713 is opened. Accordingly, only a portion of the hydraulic oil that has passed through the hydraulic motor 144 is recovered to the oil tank 143, which is a reserve tank (S1-3).

Conversely, when the wheel 18 rotates in the opposite direction due to the reverse of the vehicle, the hydraulic pump 142 also rotates in the other direction (S2-1), which causes the hydraulic motor 144 to also rotate in the other direction. becomes (S2-1). Also, at the same time, between the second passage 712 and the third passage 713 of the forward and reverse safety valve 700 is closed, and between the first passage 711 and the third passage 713 is opened ( S2-3). For reference, the operation of the forward/reverse safety valve 700 on the flowchart was described later than the operation of the hydraulic motor 144 or the hydraulic pump 142, but this is described in terms of convenience of technology, and each step above is a hydraulic pump It should be noted that the operation of (142) may proceed almost simultaneously.

For reference, in the present invention, since the operation of the hydraulic pump 142 operates in conjunction with the rotation of the wheel 18, the pressure of the hydraulic oil generated in the hydraulic pump 142 can be controlled through the torque control of the drive shaft. In addition, there is an effect that an additional cooling system is not required because the hydraulic oil is cooled using the rest time when the vehicle is not moving. In addition, since only very little hydraulic oil is used incidentally, there is an effect that the use of combustible hydraulic oil is possible.

29 is a view showing a connection relationship between the suction fan, the first driving unit, and the second driving unit in the suction fan driving device for a cleaning vehicle according to the present invention.

The suction fan driving device of the cleaning vehicle according to the present invention rotates the suction fan 300 using hydraulic power as a second power source when the vehicle is traveling including reversing, and the battery 610 as the first power source when the vehicle is stopped. In order to rotate the suction fan 300 using the force of More specifically, a first driving unit and a second driving unit may be connected to the central axis of the suction fan 300 , and a DC motor 410 that is an electric motor may be used as the first driving unit, and the second driving unit may include A hydraulic motor 144 may be used. In addition, a clutch 500 capable of connecting and releasing the shaft connection may be provided between the hydraulic motor 144 and the suction fan 300 . For reference, the side to which the first driving unit is connected may be referred to as one side of the suction fan 300 , and the side to which the second driving unit is connected may be referred to as the other side of the suction fan 300 .

Although it will be described in more detail later, a process in which the clutch 500 , the first driving unit, and the second driving unit operate the suction fan 300 will be briefly described as follows.

When the vehicle travels forward or backward, the controller 630 controls the clutch 500 so that the rotation shaft of the suction fan 300 and the hydraulic motor 144 serving as the second driving unit are connected to each other. Accordingly, when oil is supplied to the hydraulic motor 144 , the suction fan 300 rotates by the force of the hydraulic motor 144 to suck the external atmosphere. In this process, the DC motor 410, which is the first driving unit connected to the suction fan 300, also rotates together. The DC motor 410 rotating in this way performs the role of a generator to produce power, and the generated power is It is stored in the battery 610 .

If the vehicle is stopped, oil is not supplied to the hydraulic motor 144 from the hydraulic pump 142, which is the second power source, so that the control unit 630 continuously rotates the suction fan 300 to suck the outside air. Power is supplied to the DC motor 410 . And, since the hydraulic motor 144 at this time is regarded as a load from the standpoint of the DC motor 410 , the control unit 630 controls the clutch 500 to control the connecting shaft between the hydraulic motor 144 and the suction fan 300 . to be released.

Through this process, the suction fan driving apparatus and the driving method of the cleaning vehicle according to the present invention can achieve the effect of maximizing the efficiency of using the battery 610 .

30 is a view showing a control circuit diagram for controlling the operation of the suction fan in the suction fan driving device of the cleaning vehicle according to the present invention.

The suction fan driving device of the cleaning vehicle according to the present invention provides a speed detection sensor 621 for efficient driving of the first valve 145 , the second valve 146 , the DC motor 410 , and the clutch 500 . ), a reverse gear operation detection sensor 622 , and a charging circuit unit 631 may be provided. In addition, first to fifth SPDT (Single Pole Double Throw) relay (real) elements, diode bridge 641, first to fourth transistors (TR, Transistor), first to first A capacitor of 7, a DC-DC converter 632, a first photo coupler (P1), a second photo coupler (P2), and further comprising the first to twelfth resistors can

Each part of the control circuit according to its role will be described as follows.

First, the part that charges the battery 610 generated according to the rotation of the DC motor 410 or rotates the DC motor 410 using power supplied from the battery 610 includes the charging circuit unit 631 and the diode bridge. 641 , a fourth speed relay element 654 , a fifth speed relay element 655 , a seventh resistor R7 , and an eighth resistor R8 may be included. Here, the charging circuit unit 631 is a part that boosts or reduces the power generated as the DC motor 410 forcibly rotates to be suitable for charging the battery 610, and the diode bridge 641 is the DC motor ( This is a part that controls the power applied from the 410 to be supplied to the battery 610 with the same polarity. To this end, an output terminal of the charging circuit unit 631 may be connected to an output terminal of the battery 610 as a first power source, and an input terminal of the charging circuit unit 631 may be connected to a first output terminal of the diode bridge 641 . In addition, the first input terminal of the diode bridge 641 is connected to the fifth terminal of the fourth speed relay element 654 , and the second input terminal of the diode bridge 641 is the fifth terminal of the fifth speed relay element 655 . It can be connected to 5 terminals. And, the common terminal of the fifth SPD relay element 655 is connected to the other end of the DC motor 410 which is the first driving unit, and the common terminal of the fourth SPD relay element 654 is the DC motor which is the first driving unit ( 410), a fourth output terminal of the controller 630 is connected to one end of the seventh resistor R7, and the other end of the seventh resistor R7 is connected to one end of the eighth resistor R8 and the fourth transistor. It may be connected to the base of (T4). Older, the second coil terminal of the fourth speed relay element 654 and the second coil terminal of the fifth speed relay element 655 are connected to the collector of the fourth transistor T4 The second output terminal of the diode bridge 641, the fourth terminal of the fifth speed relay element 655, the other terminal of the eighth resistor R8, and the emitter of the fourth transistor T4 are provided with ground power. can be supplied. Finally, the first coil terminal of the fourth terminal of the fourth speed relay element 654, the first coil terminal of the fourth speed relay element 654, and the first coil terminal of the fifth speed relay element 655 are connected to the first Power may be supplied. In the state in which the circuit is connected in this way, if the control unit 630 does not receive a speed signal from the speed detection sensor 621, the DC motor 410 operates by supplying a high signal through the fourth output terminal OUT 4 The suction fan 300 is rotated. And, if the speed signal is applied from the speed sensor 621, the control unit 630 sends out a low signal through the fourth output terminal, the power generated from the DC motor 410 is supplied to the battery 610. supply can be controlled.

A circuit of a part controlling the opening and closing of the first valve 145 and the second valve 146, which is another part of the control circuit part, is as follows.

The control unit 630 opens the first valve 145 and closes the second valve 146 when the vehicle travels forward, and closes the first valve 145 and the second valve 146 when the vehicle travels backward. control to open. To this end, the first SPD relay element 651 , the second SPD relay element 652 , the first resistor R1 , the second resistor R2 , the third resistor R3 , and the fourth resistor R4 ) , a first transistor T1 and a second transistor T2 may be provided. Specifically, the common terminal of the first SPD relay element 651 is connected to the control signal input terminal of the first valve 145 , and the common terminal of the second SPD relay element 652 is connected to the second valve 146 . It can be connected to the control signal input terminal of For reference, here, the control signal input terminal may refer to a signal input terminal to which an electrical signal may be applied. Furthermore, the first output terminal of the controller 630 is connected to one end of the first resistor R1, and the other end of the first resistor R1 is connected to one end of the second resistor R2 and the base of the first transistor. The collector of the first transistor T1 is connected to the second coil terminal of the first SPD relay element 651, and the fourth output terminal of the control unit 630 is connected to one end of the third resistor R3, , the other end of the third resistor R3 may be connected to one end of the fourth resistor R4 and the base of the second transistor T2 . Finally, ground power is supplied to the other end of the second resistor R2, the emitter of the first transistor T1, the other end of the fourth resistor R4, and the emitter of the second transistor T2, and the first SP The fourth terminal of the DTT relay element 651, the fourth terminal of the second SPD relay element 652, the first coil terminal of the first SPD relay element 651, and the second SPD relay element 652 A first power may be supplied to the second coil terminal of the .

In this circuit configuration, when receiving a speed signal from the speed detection sensor 621 and not receiving a reverse signal from the reverse gear operation detection sensor 622, the control unit 630 outputs a high signal to the first output terminal (OUTPUT 1) and By sending a low signal to the second output terminal OUTPUT 2 , the first valve 145 may be opened and the second valve 146 may be closed. And, when receiving the speed signal from the speed detection sensor 621 and receiving the reverse signal from the reverse gear operation detection sensor 622, the control unit 630 emits a low signal to the first output terminal and a high signal to the second output terminal By sending the first valve 145 is closed and the second valve 146 can be controlled to open.

Next, a circuit part for controlling the clutch 500 that connects and releases the shaft joint between the second driving unit and the suction fan 300 is as follows.

When the vehicle is running, the suction fan 300 is driven by the hydraulic motor 144, and when the vehicle is stopped and the suction fan 300 is rotated by the DC motor 410, the hydraulic motor 144 is not a load. To prevent this, the control circuit may include a third speed relay element 653 , a fifth resistor R5 , a sixth resistor R6 , and a third transistor T3 . And, the circuit connection between them may be made as follows.

First, a common terminal of the third SPD relay element 653 is connected to a control signal input terminal of the clutch 500 , and a third output terminal of the control unit 630 is connected to one end of the fifth resistor R5 , and a fifth The other end of the resistor R5 is connected to one end of the sixth resistor and the base of the third transistor T3 , and the collector of the third transistor T3 is connected to the second coil terminal of the third speed relay element 653 . can In addition, ground power is supplied to the other end of the sixth resistor R6 and the emitter of the third transistor T3 , and the fourth terminal of the third speed relay element and the first terminal of the third speed relay element 653 are supplied. The coil terminal may be connected to supply first power. In this circuit configuration, when the control unit 630 receives a speed signal from the speed detection sensor 621 , the third output terminal OUTPUT 3 of the control unit 630 outputs a high signal so that the clutch 500 operates the suction fan 300 . ) and the shaft of the hydraulic motor 144 are connected, and when the speed signal from the speed sensor 621 is not applied, the third output terminal supplies a low signal so that the clutch 500 is connected to the suction fan 300 and the hydraulic motor ( 144) to release the shaft joint.

Next, the part in which the control circuit converts the second power used in the internal logic circuit by using the first power supplied from the battery 610 will be described in detail as follows.

For this power conversion, the circuit may include a DC-DC converter 632 , around which a fifth diode D5, a first capacitor C1, capacitor C1, a second capacitor C2, and a third capacitor are provided. (C3), fourth capacitor (C4), fifth capacitor (C5), sixth capacitor (C6), seventh capacitor (C7), first zener diode (Z1). It may further include a first inductor (inductor, L1). More specifically, the anode of the fifth diode D5 is connected to the output terminal of the battery 610 as the first power source, the cathode of the fifth diode D5, one end of the first capacitor C1, and the second capacitor C2 ) and one end of the third capacitor C3 are connected to the first terminal of the DC-DC converter 632 , and one end of the fourth capacitor C4, one end of the fifth capacitor C5, and the sixth capacitor One end of (C6), one end of the seventh capacitor C7, and the other end of the first inductor L1 are connected to the fourth terminal of the DC-DC converter 632, and the cathode of the Zener diode Z1, the first One end of the inductor L1 may be connected to a second terminal of the DC-DC converter 632 . In addition, the other end of the first capacitor C1, the other end of the second capacitor C2, the other end of the third capacitor C3, the other end of the fourth capacitor C4, the other end of the fifth capacitor C5, and the sixth capacitor The other end of C6, the other end of the seventh capacitor C7, the anode of the first Zener diode Z1, the fifth terminal of the DC-DC converter 632, and the third terminal of the DC-DC converter 632 are grounded. Power can be connected. Here, the first capacitor C1 , the second capacitor C2 , the fourth capacitor C4 , and the fifth capacitor C5 may be polarized capacitors.

Finally, the circuit of the portion receiving the signal from the speed detection sensor 621 and the reverse gear operation detection sensor 622 may be configured as follows.

First, the speed sensing part may be configured to include a ninth resistor R9 , a tenth resistor R10 , and a first photo coupler P1 around the speed sensor 621 . And, the connection between these components is that one end of the light emitting part of the first photo coupler P1 is connected to the other end of the ninth resistor R9, and the other end of the light emitting part of the first photo coupler P1 is a speed sensor 621 . It may be connected to the output terminal of the sensor, and the other end of the tenth resistor R10 may be connected to one end of the light receiving unit of the first photo coupler P1 and the first input terminal of the control unit 630 . In addition, a first power is supplied to one end of the ninth resistor R9, a second power is supplied to one end of the tenth resistor R10, and a ground power is supplied to the other end of the light receiving unit of the first photocoupler R10. can be done in such a way that

Next, the reverse gear detection part may also be configured to include an eleventh resistor (R11), a twelfth resistor (R12), and a second photo coupler (P2) around the reverse gear operation detection sensor 622, and between them One end of the light emitting part of the second photo coupler P2 is connected to the other end of the eleventh resistor R11, and the other end of the light emitting part of the second photo coupler P2 is connected to the output terminal of the reverse gear operation detection sensor 622. connected, and the other end of the twelfth resistor R12 may be connected to one end of the light receiving unit of the second photo coupler P2 and the second input end of the control unit 630 . Furthermore, a first power is supplied to one end of the eleventh resistor R11, a second power is supplied to the other end of the twelfth resistor R12, and a ground power is supplied to the other end of the light receiving unit of the second photocoupler P1. can be supplied.

The suction fan driving device for a cleaning vehicle according to the present invention can rotate the suction fan 300 by selecting an appropriate power source when driving or stopping the vehicle through such a control circuit, and also uses the DC motor 410 to When power is produced, it can be controlled so that the power is efficiently charged to the battery 610 as the first power source. For reference, in the present invention, the signal that the control unit 630 sends to the output terminal to activate other components such as the first valve 145 has been described as being high, but depending on the selection, a low signal may be used as an activation signal. It is necessary to keep in mind that there is

FIG. 31 is an enlarged view showing the speedy relay device of FIG. 30 .

The SPD relay element used in the present invention has a common terminal ('3' in the drawing) according to the voltage applied to the first coil terminal ('1' in the drawing) and the second coil terminal ('2' in the drawing). ) and the fourth terminal or the fifth terminal ('5' in the drawing) is a switching element in which the connection is changed. That is, when no voltage is supplied between the first coil terminal and the second coil terminal, the common terminal and the fifth terminal may be basically connected. In addition, when power or voltage is supplied to the first coil terminal and the second coil terminal, an internal switch may be moved by magnetic force to connect the common terminal and the fourth terminal.

The suction fan driving device for a cleaning vehicle according to the present invention uses such an SPD relay element to separate from a second power source that is a relatively low voltage required for the operation of a logic element such as the control unit 630, and a voltage greater than the second voltage With the first power source, the first valve 145 , the second valve 146 , the clutch 500 , the DC motor 410 , and the like may be controlled.

FIG. 32 is an enlarged view showing the photo coupler of FIG. 30 .

The photo coupler is used in the process of transmitting a signal applied from the speed sensor 621 or the reverse gear operation detection sensor 622 to the control unit 630. When a current flows between terminals 1 and 2, light is emitted from the light emitting unit. , which is received by the light receiving unit provided between the 3rd and 4th terminals, and serves to apply the signal recognized by the sensor to the control unit 630 .

FIG. 33 is an enlarged view of the DC-DC converter of FIG. 30. FIG.

The DC-DC converter 632 converts the first power supplied directly from the battery 610 indicated as 'B+' in FIG. 19 as a second power (FIG. It is a device that converts the phase to VCC). To this end, first power is input to the first terminal of the DC-DC converter 632 , and ground power is supplied to the fifth terminal and the third terminal. Then, the second power is output from the second terminal of the DC-DC converter 632 . For reference, the fourth terminal of the DC-DC converter 632 may be a terminal to which a feedback signal for estimating the second power is input.

34 is a flowchart illustrating a method of driving a suction fan driving device for a cleaning vehicle according to the present invention.

First, the method of driving the suction fan driving device for a cleaning vehicle according to the present invention may be performed from the process of checking whether the wheels 18 of the vehicle rotate. (S23-0) If the wheels of the vehicle do not rotate Otherwise, the clutch 500 releases the connection between the suction fan 300 and the second driving unit (S23-9), and the power of the battery 610 as the first power source is applied to the DC motor 410 as the first driving unit. provided (S23-10), the suction fan 300 is rotated by the first driving unit. (S23-11)

However, in a situation where the wheel 18 of the vehicle rotates, the rotational force of the wheel 18 is increased by the speed-up unit 141 ( S23-1 ), and the increased rotational force is applied to the hydraulic pump 142 as the second power source. and the oil is pumped (S23-2). Next, the second driving unit, the hydraulic motor 144, is operated by the oil supplied by the hydraulic pump 142, which is the second power source (S23-3), and the clutch 500 is connected to the suction fan 300 and the second driving unit. By connecting the rotation shaft between the two driving units (S23-4), the suction fan 300 is rotated by the hydraulic motor 144, which is the second driving unit. (S23-5) As the suction fan 300 rotates in this way , the air is sucked along the suction ports such as the upper suction port 110, the first side suction port 121, and the second side suction port 122 (S23-6), and the suctioned air passes through the filter and is contained in the air. Fine dust is removed. (S23-7) Finally, as the suction fan 300 rotates, the DC motor 410, which is the first driving unit, rotates together. Accordingly, power is produced and stored in the battery 610. (S23-8) For reference, each step above does not necessarily have to be performed first, and if it is determined that it is possible, the order of each step is changed. or they may proceed simultaneously.

According to the driving method of the suction fan driving device for a cleaning vehicle according to the present invention, it is possible to achieve the effect of removing fine dust by sucking the external air not only when the vehicle is driving but also when the vehicle is stopped.

35 is a flowchart illustrating a more detailed driving method of a suction fan driving device of a cleaning vehicle according to sensor signal recognition.

First, the method of driving the suction fan driving device for a cleaning vehicle according to the present invention may be performed from a process in which the control unit 630 checks whether a speed signal is applied from the speed sensor 621 (S24-0). If the speed signal is not received here, the controller may control the clutch 500 to release the rotation shaft connection between the suction fan 300 and the hydraulic motor 144 serving as the second driving unit (S24-1).

However, if the speed signal is applied from the speed sensor 621 and it is determined that the vehicle is driving, it can be further confirmed whether or not the reverse signal is being applied from the reverse gear operation detection sensor 622 next to the control unit 630. ( S24-3)

In this process, if the reverse signal is not received from the reverse gear operation detection sensor 622, in order to operate the suction fan 300 using the driving force of the vehicle, the controller 630 opens the first valve 145 and 2 The valve 146 may perform a closing process (S24-3). On the other hand, when a reverse signal is received from the reverse gear operation detection sensor 622, the control unit 630 closes the first valve 145 and opens the second valve so that the oil supplied from the hydraulic pump 142 is returned to the oil again. A process to be recovered to the tank 143 may be performed (S24-4).

The method of driving the suction fan driving device for a cleaning vehicle according to the present invention has the effect of improving the rotational force of the suction fan by controlling the suction fan to rotate with hydraulic pressure generated using the driving force of the vehicle through this control process. .

As described above, although described with reference to preferred embodiments of the present invention, those skilled in the art can variously modify the present invention without departing from the spirit and scope of the present invention as set forth in the claims below. and may be changed.

10 : car
11: Conventional water injection vehicle
13: conventional fine dust removal vehicle
14: suction hole
15: conventional small road surface cleaning vehicle
16: circular sweeper
17 : wheel
18 : wheel
19: travel motor
110: upper intake
121: first side intake port
122: second side intake port
130: lower suction unit
140: hydraulic generating device
141: speed increase
142: hydraulic pump
143: oil tank
144: hydraulic motor
145: first valve
146: second valve
200 : brush
300: suction fan
410: DC motor
500: clutch
610: battery
621: speed detection sensor
622: reverse gear operation detection sensor
630: control unit
631: charging circuit unit
632: DC-DC converter
641: diode bridge
651 to 655: first to fifth speedy relay elements
1000: cleaning vehicle to which the present invention is applied

Claims (28)

suction fan;
a first driving unit connected to the center of the suction fan;
a second driving unit connected to the center of the suction fan;
a filter disposed between the suction port and the suction fan;
a second power source providing a driving force to the second driving unit;
Including; a forward/reverse safety valve disposed between one side and the other side of the second power source;
The second driving unit is a hydraulic motor (motor),
The second power source is a hydraulic pump (pump),
The forward and reverse safety valve is
a first passage;
a second passage;
and a third passage disposed between the first passage and the second passage.
suction fan;
an electric motor connected to the center of the suction fan;
a hydraulic motor connected to the center of the suction fan and having a first oil port and a second oil port;
a filter disposed between the suction port and the suction fan;
a hydraulic pump providing driving force to the hydraulic motor;
and a forward/reverse safety valve disposed between the first hydraulic port and the second hydraulic port of the hydraulic pump.
The forward and reverse safety valve is
a first passage;
a second passage;
and a third passage disposed between the first passage and the second passage.
3. The method of claim 2,
The first inlet of the forward and reverse safety valve is connected to the first hydraulic port of the hydraulic pump,
The suction fan driving device of the cleaning vehicle, characterized in that the second inlet of the forward and reverse safety valve is connected to the second hydraulic port.
4. The method of claim 3,
The first oil port of the hydraulic motor is connected to the first hydraulic port,
The second oil port of the hydraulic motor is a suction fan driving device for a cleaning vehicle, characterized in that it is connected to the second hydraulic port.
3. The method of claim 1 or 2,
The forward and reverse safety valve is
a shuttle provided in the third passage;
a first movable body provided inside the first passage;
The suction fan driving device for a cleaning vehicle, characterized in that it further comprises; a second movable body provided in the second passage.
6. The method of claim 5,
The third passage has a smaller cross-sectional area of the passage through which the fluid moves than that of the first passage,
The third passage has a smaller cross-sectional area of the passage through which the fluid moves than the second passage.
6. The method of claim 5,
A maximum cross-sectional area measured in a direction perpendicular to an imaginary axis passing through the center of the first passage in the first movable body is larger than a cross-sectional area of a passage through which the fluid of the third passage moves,
In the second movable body, a maximum cross-sectional area measured in a direction perpendicular to an imaginary axis passing through the center of the second passage is larger than a cross-sectional area of a passage through which the fluid of the third passage moves. drive.
6. The method of claim 5,
a first elastic member provided inside the first passage and providing a restoring force in the shuttle direction with respect to the first movable body;
and a second elastic member provided inside the second passage and providing a restoring force in the shuttle direction with respect to the second moving body.
6. The method of claim 5,
and the third passage is connected to a reserve tank.
4. The method of claim 3,
The hydraulic pump is a suction fan driving device for a cleaning vehicle, characterized in that connected to the reserve tank.
pump block body;
a first inlet formed in the pump block body;
a second inlet formed in the pump block body;
a third passage formed inside the pump block body;
a first passage formed inside the pump block body and connecting the first inlet and the third passage;
and a second passage formed inside the pump block body and connecting the second inlet and the third passage.
12. The method of claim 11,
a shuttle provided inside the third passage;
a first movable body provided inside the first passage;
A bidirectional pump block used in a suction fan driving device of a cleaning vehicle, characterized in that it further comprises; a second movable body provided inside the second passage.
12. The method of claim 11,
The third passage has a smaller cross-sectional area of the passage through which the fluid moves than that of the first passage,
The third passage is a bidirectional pump block used in a suction fan driving device of a cleaning vehicle, characterized in that the cross-sectional area of the passage through which the fluid moves is smaller than that of the second passage.
13. The method of claim 12,
A maximum cross-sectional area measured in a direction perpendicular to an imaginary axis passing through the center of the first passage in the first movable body is larger than a cross-sectional area of a passage through which the fluid of the third passage moves,
In the second movable body, a maximum cross-sectional area measured in a direction perpendicular to an imaginary axis passing through the center of the second passage is larger than a cross-sectional area of a passage through which the fluid of the third passage moves. Bi-directional pump block used in the drive unit.
13. The method of claim 12,
a first elastic member provided inside the first passage and providing a restoring force in the shuttle direction with respect to the first movable body;
Bi-directional pump block used in a suction fan driving device of a cleaning vehicle, characterized in that it further comprises; a second elastic member provided inside the second passage and providing a restoring force in the shuttle direction with respect to the second moving body. .
12. The method of claim 11,
The first inlet is connected to the first hydraulic port of the hydraulic pump,
The second inlet is a bidirectional pump block used in a suction fan driving device of a cleaning vehicle, characterized in that it is connected to a second hydraulic port of the hydraulic pump.
12. The method of claim 11,
The third passage is a bidirectional pump block used in a suction fan driving device of a cleaning vehicle, characterized in that it is connected to the reserve tank.
18. The method of claim 17,
The reserve tank is a bidirectional pump block used in a suction fan driving device of a cleaning vehicle, characterized in that provided in the pump block body.
18. The method of claim 17,
The reserve tank is a bidirectional pump block used in a suction fan driving device of a cleaning vehicle, characterized in that it is connected to a hydraulic pump.
rotating the hydraulic pump in one direction;
Including; moving the first movable body in the first passage of the bidirectional pump block to push the shuttle in the direction of the second passage;
The first hydraulic port of the hydraulic pump is connected to the first inlet of the bidirectional pump block,
The second hydraulic port of the hydraulic pump is connected to the second inlet of the bidirectional pump block,
A third passage is provided between the first passage and the second passage,
The first passage, the second passage, and the third passage are formed inside the bidirectional pump block.
21. The method of claim 20,
Through the step of moving the first movable body in the first passage of the bidirectional pump block to push the shuttle in the direction of the second passage,
A method of driving a suction fan driving apparatus for a cleaning vehicle, characterized in that the first passage and the third passage are closed, and the second passage and the third passage are open.
21. The method of claim 20,
After the step of rotating the hydraulic pump in one direction,
rotating the hydraulic motor in one direction;
rotating the hydraulic pump in the other direction;
Including; moving the second movable body in the second passage of the bidirectional pump block to push the shuttle in the direction of the first passage;
The first hydraulic port of the hydraulic pump is connected to the first inlet of the bidirectional pump block,
The second hydraulic port of the hydraulic pump is connected to the second inlet of the bidirectional pump block,
A third passage is provided between the first passage and the second passage,
The first passage, the second passage, and the third passage are formed inside the bidirectional pump block.
24. The method of claim 23,
Through the step of moving the second movable body in the second passage of the bidirectional pump block to push the shuttle in the direction of the first passage,
A method of driving a suction fan driving apparatus for a cleaning vehicle, characterized in that the second passage and the third passage are closed, and the first passage and the third passage are open.
24. The method of claim 23,
After the step of rotating the hydraulic pump in the other direction,
The method of driving the suction fan driving device of a cleaning vehicle, characterized in that it further comprises; rotating the hydraulic motor in the other direction.
24. The method of claim 20 or 23,
The first oil port of the hydraulic motor is connected to the first hydraulic port,
The second oil port of the hydraulic motor is connected to the second hydraulic port.
21. The method of claim 20,
The third passage has a smaller cross-sectional area of the passage through which the fluid moves than the first passage,
The third passage has a smaller cross-sectional area of the passage through which the fluid moves than the second passage,
The suction fan of the cleaning vehicle, characterized in that the maximum cross-sectional area measured in the direction perpendicular to the imaginary axis passing through the center of the first passage in the first movable body is larger than the cross-sectional area of the passage through which the fluid of the third passage moves. The driving method of the driving device.
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