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WO2013094793A1 - Système de commande de fusionnement d'entraînements pour engin de travaux publics - Google Patents

Système de commande de fusionnement d'entraînements pour engin de travaux publics Download PDF

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Publication number
WO2013094793A1
WO2013094793A1 PCT/KR2011/010035 KR2011010035W WO2013094793A1 WO 2013094793 A1 WO2013094793 A1 WO 2013094793A1 KR 2011010035 W KR2011010035 W KR 2011010035W WO 2013094793 A1 WO2013094793 A1 WO 2013094793A1
Authority
WO
WIPO (PCT)
Prior art keywords
hydraulic pump
spool
hydraulic
flow path
traveling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2011/010035
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English (en)
Korean (ko)
Inventor
이상희
정해균
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Volvo Construction Equipment AB
Original Assignee
Volvo Construction Equipment AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Volvo Construction Equipment AB filed Critical Volvo Construction Equipment AB
Priority to PCT/KR2011/010035 priority Critical patent/WO2013094793A1/fr
Priority to KR1020147016875A priority patent/KR101641272B1/ko
Publication of WO2013094793A1 publication Critical patent/WO2013094793A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2221—Control of flow rate; Load sensing arrangements
    • E02F9/2239—Control of flow rate; Load sensing arrangements using two or more pumps with cross-assistance
    • E02F9/2242—Control of flow rate; Load sensing arrangements using two or more pumps with cross-assistance including an electronic controller
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2221—Control of flow rate; Load sensing arrangements
    • E02F9/2232—Control of flow rate; Load sensing arrangements using one or more variable displacement pumps
    • E02F9/2235—Control of flow rate; Load sensing arrangements using one or more variable displacement pumps including an electronic controller
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2278—Hydraulic circuits
    • E02F9/2282—Systems using center bypass type changeover valves
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2278—Hydraulic circuits
    • E02F9/2285—Pilot-operated systems
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2278—Hydraulic circuits
    • E02F9/2292—Systems with two or more pumps
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2278—Hydraulic circuits
    • E02F9/2296—Systems with a variable displacement pump

Definitions

  • the present invention relates to a running confluence control system of a construction machine, and more particularly, a driving confluence control of a construction machine to secure a predetermined traveling speed by using a pump having a low RPM and a low capacity at a high speed in a wheel type excavator. It is about the system.
  • first and second hydraulic pumps 2 and 3 Electronically controlled variable displacement first and second hydraulic pumps (hereinafter referred to as “first and second hydraulic pumps") 2 and 3 connected to the power generator 1,
  • Running spool 5 is installed in the flow path 4 of the first hydraulic pump 2, and controls the start, stop and direction change of the hydraulic motor (not shown) during switching;
  • a work device spool (7) installed in the flow path (6) of the second hydraulic pump (3) for controlling the starting, stopping, and reversing of a work device such as a boom during switching;
  • a hydraulic traveling pedal 8 which outputs a driving signal pressure in proportion to the operation amount
  • the electronics provided in the first and second hydraulic pumps 2 and 3 to control the RPM of the power generator 1 and the discharge flow rates of the first and second hydraulic pumps 2 and 3 to correspond to the traveling signal pressure. And a controller 10 for outputting a control signal to the control valves 2a and 3a (PPRV).
  • reference numeral 11 denotes a main control valve (MCV)
  • 12 denotes a pressure sensing device for detecting a pressure according to pressurization of the traveling pedal 8 and transmitting a detection signal to the controller
  • 13 denotes a power generator ( RPM detection device for detecting the RPM of 1) and transmits the detection signal to the controller (10).
  • the driving pedal 8 is pressed after the driving mode is selected by the driver by operating the work mode selection switch 9, the driving spool 5 is plotted by the driving signal pressure according to the pressing of the driving pedal 8. Switch to up or left direction. At this time, the pressure signal detected by the pressure sensing device 12 is transmitted to the controller 10.
  • the controller 10 outputs a control signal to the power generator 1 to increase the RPM of the power generator 1 so as to be proportional to the signal pressure, and the electronic control valve provided in the first hydraulic pump 2 ( The control signal is output to 2a) to discharge the flow rate corresponding to the signal pressure.
  • the control signal is output to 2a to discharge the flow rate corresponding to the signal pressure.
  • a power generator 1 A power generator 1,
  • a traveling spool (5) installed in the flow path (4) of the first hydraulic pump (2) and controlling the starting, stopping, and direction change of the hydraulic motor at the time of switching;
  • a work device spool (7) installed in the flow path (6) of the second hydraulic pump (3) for controlling the starting, stopping, and reversing of a work device such as a boom during switching;
  • a hydraulic traveling pedal 14 mechanically connected to an electric control switch (not shown) for outputting a driving signal current value according to the manipulation amount;
  • the configuration except that the operation amount of the driving pedal 14 is detected by the current value input to the controller 10 when the driver operates the electric control switch of the driving pedal 14 is the driving control shown in FIG. 1. Since the configuration of the system is the same, detailed descriptions of their configuration and operation are omitted, and the reference numerals for the overlapping configurations are the same.
  • a power generator 1 A power generator 1,
  • a traveling spool (5) installed in the flow path (4) of the first hydraulic pump (2) and controlling the starting, stopping, and direction change of the hydraulic motor at the time of switching;
  • a work device spool (7) installed in the flow path (6) of the second hydraulic pump (3) for controlling the starting, stopping, and reversing of a work device such as a boom during switching;
  • a proportional control valve 17 for outputting a secondary signal pressure in which the pilot signal pressure supplied from the pilot pump 16 to the traveling spool 5 is proportional to the control signal from the outside;
  • First and second hydraulic pumps to control the RPM of the power generator 1 and to control the discharge flow rate of the first and second hydraulic pumps 2 and 3 in correspondence with the current value according to the operation of the electric running pedal 15. And a controller 10 for outputting a control signal to the electronic control valves 2a and 3a provided at (2, 3).
  • the operation amount of the driving pedal 15 is detected by the current value input to the controller 10, and the control signal is supplied to the proportional control valve 17 to be proportional to the operation amount.
  • the configuration except for controlling the traveling spool 5 by outputting the same is the same as the configuration of the traveling control system shown in FIG. 1, so that detailed descriptions of the configuration and operation thereof are omitted and the reference numerals for the overlapping configurations are the same. To be written.
  • the hydraulic oil required for driving is used using only one of the above-described first hydraulic pump 2 or the second hydraulic pump 3.
  • the hydraulic pump having a higher RPM and a larger capacity is generally used than the tracked excavator of the same class.
  • a predetermined traveling speed can be secured even at a low RPM and a low capacity pump, thereby reducing equipment cost costs. It is related to the driving joining control system of construction machinery to improve fuel economy.
  • Hydraulic traveling pedal to output the driving signal pressure in proportion to the operation amount
  • a work mode selection switch for selecting a work mode or a driving mode
  • a traveling spool which is installed in the flow path of the first hydraulic pump and controls the start, stop and direction change of the hydraulic motor during switching;
  • At least one work device spool installed in a flow path of the second hydraulic pump, for controlling start, stop, and direction change of the work device at the time of switching;
  • a traveling confluence spool for converting the flow path of the hydraulic pump into a block state and supplying the hydraulic fluid on the second hydraulic pump side to an upstream side of the traveling spool through the confluence flow path and joining the hydraulic fluid of the first hydraulic pump;
  • a CBP spool which is installed at the downstream side of the flow path of the second hydraulic pump and forms an operating pressure in the tandem flow path of the second hydraulic pump at the time of switching;
  • a first proportional control valve for supplying secondary signal pressures output in proportion to a control signal from the outside to the traveling confluence spool and the CBP spool, respectively;
  • Controlling the RPM of the power generating device corresponding to the driving signal pressure of the driving pedal, and outputting a control signal to the electronic control valve provided in the first and second hydraulic pumps to control the discharge flow rates of the first and second hydraulic pumps; 1 includes a controller for outputting a control signal to the proportional control valve.
  • a hydraulic traveling pedal mechanically connected to an electric control switch for outputting a driving signal current value according to the manipulation amount
  • a work mode selection switch for selecting a work mode or a driving mode
  • a traveling spool which is installed in the flow path of the first hydraulic pump and controls the start, stop and direction change of the hydraulic motor during switching;
  • At least one work device spool installed in a flow path of the second hydraulic pump, for controlling start, stop, and direction change of the work device at the time of switching;
  • a traveling confluence spool for converting the flow path of the hydraulic pump into a block state and supplying the hydraulic fluid on the second hydraulic pump side to an upstream side of the traveling spool through the confluence flow path and joining the hydraulic fluid of the first hydraulic pump;
  • a CBP spool which is installed at the downstream side of the flow path of the second hydraulic pump and forms an operating pressure in the tandem flow path of the second hydraulic pump at the time of switching;
  • a first proportional control valve for supplying secondary signal pressures output in proportion to a control signal from the outside to the traveling confluence spool and the CBP spool, respectively;
  • Control the RPM of the power generating device to correspond to the current value according to the operation of the electric control switch of the driving pedal, and to control the electronic control valve provided in the first and second hydraulic pump to control the discharge flow rate of the first and second hydraulic pump And a controller for outputting a signal and outputting a control signal to the first proportional control valve.
  • An electric traveling pedal for outputting a driving signal current value in proportion to the manipulated amount
  • a work mode selection switch for selecting a work mode or a driving mode
  • a traveling spool which is installed in the flow path of the first hydraulic pump and controls the start, stop and direction change of the hydraulic motor during switching;
  • At least one work device spool installed in a flow path of the second hydraulic pump, for controlling start, stop, and direction change of the work device at the time of switching;
  • a traveling confluence spool for converting the flow path of the hydraulic pump into a block state and supplying the hydraulic fluid on the second hydraulic pump side to an upstream side of the traveling spool through the confluence flow path and joining the hydraulic fluid of the first hydraulic pump;
  • a CBP spool which is installed at the downstream side of the flow path of the second hydraulic pump and forms an operating pressure in the tandem flow path of the second hydraulic pump at the time of switching;
  • a first proportional control valve for supplying a secondary signal pressure output in proportion to a control signal from the outside to the traveling confluence spool;
  • Proportional control valve for supplying the secondary signal pressure output to the traveling spool in proportion to the control signal from the outside
  • it includes a pressure sensing device for detecting the driving signal pressure according to the pressure of the hydraulic traveling pedal described above and transmitting the detection signal to the controller.
  • It includes an RPM detecting device for detecting the RPM of the power generating device described above and transmitting the detection signal to the controller.
  • a mechanical variable displacement hydraulic pump which variably controls the discharge flow rate by a regulator operated by a control signal pressure from the outside is used.
  • a solenoid valve for supplying pilot signal pressure so as to switch the driving confluence spool and the CBP spool when the driving mode is selected by operating the work mode selection switch.
  • the traveling joining control system of a construction machine as described above has the following advantages.
  • the discharge flow rate of the low RPM and the low capacity pump is joined to secure a predetermined driving speed, thereby reducing the cost of equipment and improving fuel economy.
  • FIG. 1 is a hydraulic circuit diagram according to a first embodiment of the prior art
  • FIG. 2 is a hydraulic circuit diagram according to a second embodiment of the prior art
  • FIG. 3 is a hydraulic circuit diagram according to a third embodiment of the prior art.
  • FIG. 4 is a hydraulic circuit diagram of a traveling joining control system of a construction machine according to a first embodiment of the present invention
  • FIG. 5 is a hydraulic circuit diagram of a traveling joining control system of a construction machine according to a second embodiment of the present invention.
  • FIG. 6 is a hydraulic circuit diagram of a traveling joining control system of a construction machine according to a third embodiment of the present invention.
  • FIG. 7 is a flowchart of a traveling joining control system for a construction machine according to a first embodiment of the present invention.
  • FIG. 8 is a flowchart illustrating a case where a solenoid valve is used as a control valve for supplying pilot signal pressure to switch between the traveling joining spool and the CBP spool in the traveling joining control system of a construction machine according to embodiments of the present disclosure.
  • first and second hydraulic pumps 2 and 3 Electronically controlled variable displacement first and second hydraulic pumps 2 and 3 connected to the power generator 1 (hereinafter referred to as "first and second hydraulic pumps")
  • a hydraulic traveling pedal 8 which outputs a driving signal pressure in proportion to the amount of operation by the driver
  • a traveling spool (5) installed in the flow path (4) of the first hydraulic pump (2) and controlling the starting, stopping, and direction change of the hydraulic motor (not shown) during switching;
  • At least one work device spool (7) installed in the flow path (6) of the second hydraulic pump (3) for controlling the starting, stopping, and reversing of a work device such as a boom during switching;
  • a CBP spool 22 which is installed at the downstreammost side of the flow path 6 of the second hydraulic pump 2 and forms an operating pressure in the tandem flow path 18 of the second hydraulic pump 3 during switching;
  • the first proportional control valve 23 installed in the flow path of the pilot pump 16 and supplying the secondary signal pressure outputted in proportion to the electric control signal from the outside to the traveling confluence spool 21 and the CBP spool 22, respectively.
  • the first and second hydraulic pumps 2 and 3 control the RPM of the power generator 1 in correspondence with the travel signal pressure of the travel pedal 8 and control the discharge flow rates of the first and second hydraulic pumps 2 and 3.
  • a controller 10 for outputting control signals to the electronic control valves 2a and 3a (PPRV) provided in 3), and for outputting an electrical control signal to the first proportional control valve 23.
  • PPRV electronic control valves 2a and 3a
  • a pressure sensing device 12 that detects the driving signal pressure according to the pressurization of the hydraulic traveling pedal 8 and transmits the detection signal to the controller 10.
  • RPM detection device 13 for detecting the above-described RPM of the power generating device 1 and transmits a detection signal to the controller (10).
  • a mechanical variable displacement hydraulic pump that variably controls the discharge flow rate may be used by a regulator operated by a control signal pressure from the outside.
  • the traveling joining spool which is installed on the upstream side of the flow path 6 of the above-mentioned second hydraulic pump 3 and joins the hydraulic fluid of the second hydraulic pump 3 side with the hydraulic oil of the first hydraulic pump 2 during switching ( 21), the CBP spool 22 provided at the most downstream side of the flow path 6 of the second hydraulic pump 3, and the traveling confluence spool 21 and the CBP spool ( Except for the first proportional control valve 23 for outputting the secondary signal pressure supplied to 22), the configuration is the same as that of the traveling confluence control system shown in FIG. Omitted and duplicated reference numerals are the same.
  • the travel spool 5 is switched to the left in the drawing by the travel signal pressure output according to the hydraulic travel pedal 8 pressure.
  • the pressure detection device 12 detects the travel signal pressure according to the pressurization of the travel pedal 8, but the detection signal is transmitted to the controller 10.
  • the controller 10 outputs a control signal to the power generator 1 in proportion to the travel signal pressure to control the RPM of the power generator 1.
  • the flow rate of the first hydraulic pump 2 is controlled by outputting a control signal corresponding to the driving signal pressure to the electronic control valve 2a provided in the first hydraulic pump 2.
  • the driver 10 is required to be faster than the speed corresponding to the maximum flow rate of the first hydraulic pump 2 to further press the running pedal 8, the controller 10 in the second hydraulic pump 3
  • the control signal is output to the electromagnetic proportional valve 3a and the first proportional control valve 23.
  • the first proportional control valve 23 outputs a secondary signal pressure proportional to the traveling signal pressure. Therefore, when gradually shifting the traveling confluence spool 21 and the CBP spool 22 by the secondary signal pressure output from the first proportional control valve 23, the hydraulic oil discharged from the second hydraulic pump 3. A part is moved to the tandem flow path 18 via the flow path 6 and the traveling confluence spool 21, and at the same time, a part of the working oil of the second hydraulic pump 3 passes through the joining path 19 and the joining flow path 20. Since the moving spool 5 is moved upstream, confluence with the flow rate discharged from the first hydraulic pump 2 starts.
  • the discharge flow rate of the first hydraulic pump 2 is controlled by outputting a control signal to the electromagnetic proportional valve 2a of the first hydraulic pump 2 corresponding to the traveling signal pressure.
  • the pilot signal pressure is supplied to switch between the driving confluence spool 21 and the CBP spool 22 by being switched by a control signal input from the controller 10. It may include a solenoid valve (not shown).
  • the solenoid valve is turned on by the control signal from the controller 10. For this reason, the pilot signal pressure from the pilot pump 16 is supplied to the traveling confluence spool 21 and the CBP spool 22, respectively, and is switched.
  • the pressure detection device 12 detects the driving signal pressure according to the driving pedal pressure, but the detection signal is transmitted to the controller 10.
  • the RPM of the power generator 1 is controlled by the control signal input from the controller 10 so as to be proportional to the detected travel signal pressure (see graph curve "a").
  • the discharge flow rate of the hydraulic pump can be controlled in response to the travel signal pressure. That is, as compared with the discharge flow rates discharged from the first hydraulic pump 2 and the second hydraulic pump 3, respectively, as in the graph curve b shown by the solid line, It can be seen that the combined flow rate in which the flow rate of the two hydraulic pumps 3 is joined to the flow rate of the first hydraulic pump 2 can discharge the flow rate required for the maximum speed of the equipment.
  • first and second hydraulic pumps 2 and 3 Electronically controlled variable displacement first and second hydraulic pumps (hereinafter referred to as “first and second hydraulic pumps") 2 and 3 connected to the power generator 1,
  • a hydraulic traveling pedal 14 mechanically connected to an electric control switch for outputting a driving signal current value according to the manipulation amount
  • a traveling spool (5) installed in the flow path (4) of the first hydraulic pump (2) and controlling the starting, stopping, and direction change of the hydraulic motor (not shown) during switching;
  • At least one work device spool (7) installed in the flow path (6) of the second hydraulic pump (3) for controlling the starting, stopping, and reversing of a work device such as a boom during switching;
  • a CBP spool 22 which is installed at the downstreammost side of the flow path 6 of the second hydraulic pump 3 and forms an operating pressure in the tandem flow path 18 of the second hydraulic pump 3 during switching;
  • a first proportional control valve 23 for supplying secondary signal pressures output in proportion to an electrical control signal from the outside to the traveling confluence valve 21 and the CBP spool 22, respectively;
  • First and second hydraulic pumps to control the RPM of the power generating device and to control the discharge flow rate of the first and second hydraulic pumps 2 and 3 in correspondence with the current value according to the operation of the electric control switch of the travel pedal 14.
  • a controller 10 for outputting a control signal to the electronic control valves 2a and 3a provided at (2, 3) and for outputting an electrical control signal to the first proportional control valve 23.
  • the traveling confluence spool which is installed on the upstream side of the flow path 6 of the above-mentioned second hydraulic pump 3 and joins the hydraulic oil of the second hydraulic pump 3 side with the hydraulic oil of the first hydraulic pump 2 during switching ( 21), the CBP spool 22 provided at the most downstream side of the flow path 6 of the second hydraulic pump 3, and the running confluence spool 21 and the CBP spool (by the electric control signal from the controller 10). Since the configuration except for the first proportional control valve 23 that outputs the secondary signal pressure supplied to 22) is the same as that of the traveling confluence control system shown in FIG. 2, a detailed description thereof will be given. Omitted and duplicated reference numerals are the same.
  • an electric control switch (not shown) provided in the driving pedal 14 when operated by a driver, an operation amount of the driving pedal 14 may be detected by a current value directly input to the controller 10. Can be. This makes the parts of the pressure sensing device 12 shown in FIG. 4 unnecessary.
  • the driving spool 5 is switched by the electric control switch operation of the traveling pedal 14, and at the same time, the controller 10 detects the operation amount of the traveling pedal 14. Therefore, the traveling confluence spool 21 and the CBP spool 22 are switched by the control signal output in proportion to the operation amount from the controller 10. Therefore, the configuration in which the flow rate of the second hydraulic pump 3 is supplied to the traveling spool 5 via the traveling confluence spool 21 and joined with the flow rate of the first hydraulic pump 2 is the traveling confluence shown in FIG. 4. Since the configuration is the same as that of the control system, their configuration and detailed description are omitted.
  • first and second hydraulic pumps 2 and 3 Electronically controlled variable displacement first and second hydraulic pumps (hereinafter referred to as “first and second hydraulic pumps") 2 and 3 connected to the power generator 1,
  • a traveling spool (5) installed in the flow path (4) of the first hydraulic pump (2) and controlling the starting, stopping, and direction change of the hydraulic motor (not shown) during switching;
  • At least one work device spool (7) installed in the flow path (6) of the second hydraulic pump (3) for controlling the starting, stopping, and reversing of a work device such as a boom during switching;
  • a CBP spool 22 which is installed at the downstreammost side of the flow path 6 of the second hydraulic pump 3 and forms an operating pressure in the tandem flow path 18 of the second hydraulic pump 3 during switching;
  • a first proportional control valve 23 for supplying a secondary signal pressure output in proportion to a control signal from the outside to the traveling confluence spool 21;
  • a proportional control valve 17 for supplying a secondary signal pressure output in proportion to a control signal from the outside to the traveling spool 5;
  • the first and second hydraulic pumps may be configured to control the RPM of the power generator 1 and to control the discharge flow rates of the first and second hydraulic pumps 2 and 3 in correspondence with the current values according to the operation of the travel pedal 15. And a controller 10 for outputting control signals to the electronic control valves 2a and 3a provided at 2 and 3 and outputting control signals to the proportional control valve 17 and the first proportional control valve 23. .
  • the traveling joining spool which is installed on the upstream side of the flow path 6 of the above-mentioned second hydraulic pump 3 and joins the hydraulic fluid of the second hydraulic pump 3 side with the hydraulic oil of the first hydraulic pump 2 during switching ( 21), the CBP spool 22 provided at the most downstream side of the flow path 6 of the second hydraulic pump 3, and the traveling confluence spool 21 and the CBP spool ( Except for the first proportional control valve 23 that outputs the secondary signal pressure supplied to 22, the configuration is the same as that of the traveling confluence control system shown in FIG. Omitted and duplicated reference numerals are the same.
  • the manipulation amount of the driving pedal 15 may be detected by a current value input directly to the controller 10 when the electric driving pedal 15 is pressed by the driver. This makes the parts of the pressure sensing device 12 shown in FIG. 4 unnecessary.
  • the operation amount of the traveling pedal 15 is detected by the current value input to the controller 10 when the driving pedal 15 is operated, and the proportional control valve 17 is supplied from the controller 10 to be proportional to the operation amount.
  • the configuration except for controlling the traveling spool 5 by outputting a control signal is the same as the configuration of the traveling joining control system shown in FIG. 4, and thus the configuration and detailed description thereof are omitted.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Operation Control Of Excavators (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)

Abstract

L'invention porte sur un système de commande de fusionnement d'entraînements pour fixer une vitesse de propulsion en fusionnant un RPM bas et un débit de refoulement de pompe à basse capacité de l'entraînement d'un excavateur du type sur roues à une vitesse élevée. La présente invention décrit un système de commande de fusionnement d'entraînements qui comprend : des première et seconde pompes hydrauliques à capacité variable à commande électronique ; une pédale d'entraînement hydraulique ; un commutateur de sélection de mode de travail ; un distributeur d'entraînement et au moins un distributeur de dispositif de travail ; un distributeur de fusionnement d'entraînements, qui est installé sur un côté amont d'un trajet d'écoulement de la seconde pompe hydraulique, pour fermer un trajet d'écoulement de la première pompe hydraulique et fusionner l'huile hydraulique de la seconde pompe hydraulique avec l'huile hydraulique de la première pompe hydraulique ; un distributeur CBP, qui est installé sur le côté le plus inférieur d'un aval de la seconde pompe hydraulique, pour créer une pression d'actionnement exercée sur un trajet d'écoulement en tandem de la seconde pompe hydraulique ; une première soupape de commande proportionnelle servant à fournir une pression de signal secondaire qui est émise de manière à être proportionnée à un signal de commande extérieure, à chacun des distributeurs de fusionnement d'entraînements et du distributeur CBP ; et une unité de commande servant à commander le RPM d'un dispositif générateur de force d'entraînement en correspondance avec une pression de signal d'entraînement de la pédale d'entraînement, en envoyant le signal de commande à des soupapes de commande électroniques qui sont agencées sur les première et seconde pompes hydrauliques, et pour émettre en sortie le signal de commande envoyé à la première soupape de commande proportionnelle.
PCT/KR2011/010035 2011-12-23 2011-12-23 Système de commande de fusionnement d'entraînements pour engin de travaux publics Ceased WO2013094793A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/KR2011/010035 WO2013094793A1 (fr) 2011-12-23 2011-12-23 Système de commande de fusionnement d'entraînements pour engin de travaux publics
KR1020147016875A KR101641272B1 (ko) 2011-12-23 2011-12-23 건설기계의 주행 합류 제어시스템

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103527541A (zh) * 2013-09-16 2014-01-22 洛阳中重自动化工程有限责任公司 一种实现备用泵自动切换的液压控制系统
CN108518369A (zh) * 2018-03-20 2018-09-11 广东力源液压机械有限公司 一种插装阀大流量动态输出控制方法及插装阀

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000021360U (ko) * 1999-05-26 2000-12-26 김형벽 유압구동식 건설장비의 주행제어장치
KR20070069849A (ko) * 2005-12-28 2007-07-03 두산인프라코어 주식회사 굴삭기의 주행복합제어용 유압시스템
JP2007321972A (ja) * 2006-06-05 2007-12-13 Kayaba Ind Co Ltd 建設機械の動力装置
KR20100041100A (ko) * 2008-10-13 2010-04-22 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 건설장비용 유압시스템

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200208364Y1 (ko) * 2000-07-26 2000-12-15 주식회사아펙스인 3ｄ 입체 음향 청취 시스템

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000021360U (ko) * 1999-05-26 2000-12-26 김형벽 유압구동식 건설장비의 주행제어장치
KR20070069849A (ko) * 2005-12-28 2007-07-03 두산인프라코어 주식회사 굴삭기의 주행복합제어용 유압시스템
JP2007321972A (ja) * 2006-06-05 2007-12-13 Kayaba Ind Co Ltd 建設機械の動力装置
KR20100041100A (ko) * 2008-10-13 2010-04-22 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 건설장비용 유압시스템

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103527541A (zh) * 2013-09-16 2014-01-22 洛阳中重自动化工程有限责任公司 一种实现备用泵自动切换的液压控制系统
CN108518369A (zh) * 2018-03-20 2018-09-11 广东力源液压机械有限公司 一种插装阀大流量动态输出控制方法及插装阀
CN108518369B (zh) * 2018-03-20 2023-09-29 广东力源液压机械有限公司 一种插装阀大流量动态输出控制方法及插装阀

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