WO2016080760A1 - Appareil de commande de circuit hydraulique d'équipement de construction - Google Patents

Appareil de commande de circuit hydraulique d'équipement de construction Download PDF

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Publication number
WO2016080760A1
WO2016080760A1 PCT/KR2015/012417 KR2015012417W WO2016080760A1 WO 2016080760 A1 WO2016080760 A1 WO 2016080760A1 KR 2015012417 W KR2015012417 W KR 2015012417W WO 2016080760 A1 WO2016080760 A1 WO 2016080760A1
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WIPO (PCT)
Prior art keywords
hydraulic circuit
front work
construction machine
displacement
control valve
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Application number
PCT/KR2015/012417
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English (en)
Korean (ko)
Inventor
조영식
Original Assignee
두산인프라코어 주식회사
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Application filed by 두산인프라코어 주식회사 filed Critical 두산인프라코어 주식회사
Priority to CN201580065189.5A priority Critical patent/CN107002390A/zh
Priority to KR1020177016343A priority patent/KR102088091B1/ko
Priority to EP15861005.5A priority patent/EP3222784A4/fr
Publication of WO2016080760A1 publication Critical patent/WO2016080760A1/fr

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    • 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
    • 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
    • E02F9/2004—Control mechanisms, e.g. control levers
    • 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
    • E02F9/2025—Particular purposes of control systems not otherwise provided for
    • E02F9/2037—Coordinating the movements of the implement and of the frame
    • 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
    • E02F9/2246—Control of prime movers, e.g. depending on the hydraulic load of work tools
    • 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
    • E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
    • E02F9/2267—Valves or distributors
    • 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
    • E02F9/02—Travelling-gear, e.g. associated with slewing gears
    • 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
    • E02F9/225—Control of steering, e.g. for hydraulic motors driving the vehicle tracks
    • 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
    • E02F9/2257—Vehicle levelling or suspension systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/20576—Systems with pumps with multiple pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/3056—Assemblies of multiple valves
    • F15B2211/3059—Assemblies of multiple valves having multiple valves for multiple output members
    • F15B2211/30595—Assemblies of multiple valves having multiple valves for multiple output members with additional valves between the groups of valves for multiple output members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/665—Methods of control using electronic components
    • F15B2211/6658—Control using different modes, e.g. four-quadrant-operation, working mode and transportation mode
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7058—Rotary output members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
    • F15B2211/7135—Combinations of output members of different types, e.g. single-acting cylinders with rotary motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
    • F15B2211/7142—Multiple output members, e.g. multiple hydraulic motors or cylinders the output members being arranged in multiple groups

Definitions

  • the present invention relates to a hydraulic circuit control device for a construction machine, and more particularly, to a hydraulic circuit control device for a construction machine that can mitigate the impact caused by the flow rate change when the traveling and front work at the same time.
  • Construction machinery generally includes a hydraulic circuit device and a work device.
  • the hydraulic circuit device includes an operation unit, a control valve, a pump, and an actuator.
  • Work tools include, for example, excavators among construction machines, boom structures, arm structures, bucket structures and optional devices.
  • the operation unit includes a joystick and a pedal provided in the driver's seat.
  • the main control control valve provides the actuator with a flow rate corresponding to the joystick displacement.
  • the pump may be provided with a first pump and a second pump, and provide pressure to the working oil to the main control control valve.
  • the actuator is actuated by the hydraulic oil provided to allow the work tool to operate.
  • the actuator includes a left driving motor and a right driving motor used for driving, a boom cylinder, an arm cylinder, a bucket cylinder and an option cylinder used for front work, and a swing motor for turning the upper body.
  • the construction machine can select the driving mode and the working mode.
  • the driving mode is selected, the straight running performance is improved, and when the working mode is selected, the work performance is given priority over the driving performance.
  • the conventional hydraulic circuit device has a problem that the front work is slow to proceed immediately after operating the control valve.
  • the operator operates the joystick to perform a desired task during the driving straight
  • the time from operating the joystick to the time when the actuator actually starts to operate is long. have. That is, there is a problem that the operation of the front work device is delayed when the operation of the front work device is required while the driving straight is performed.
  • Patent Document 1 Republic of Korea Patent Publication No. 10-2003-0008069 (2003.01.24.)
  • Patent Document 2 Republic of Korea Patent Publication No. 10-2005-0066041 (2005.06.30.)
  • an object of the present invention is to provide a hydraulic circuit control device for a construction machine that can solve the shock generated when the operation of the front work device is required while driving straight ahead.
  • Hydraulic circuit control device for a construction machine for achieving the above technical problem, the first, second pump (11, 12); A first driving motor 41 receiving a flow rate discharged from the first pump 11; A second driving motor 42 receiving a flow rate discharged from the second pump 12; A front work device 50 receiving a flow rate discharged from the first pump 11 or the second pump 12; A control valve 20 installed in a flow path between the first and second pumps 11 and 12 and the front work device 50; A joystick (110) generating a first operation signal for operating the front work device (50); A driving pedal 120 generating a second operation signal for operating the first and second driving motors 41 and 42; And when both of the first operation signal and the second operation signal are input, calculate a control value for controlling the control valve 20 based on a control map, and calculate the control value to the control valve 20. And a control unit 400 for outputting.
  • the hydraulic circuit control device of a construction machine when the control valve 20 is controlled can supply the flow rate discharged from the second pump 12 to the first travel motor (41). have.
  • control valve 20 is the flow rate discharged from the first pump 11 and the flow rate discharged from the second pump 12 is joined. can do.
  • the front work device 50 may include a boom cylinder, arm cylinder and bucket cylinder.
  • control map is from the operation request time point t0 of the front work device 50 to the time point t2 at which the displacement of the spool becomes maximum.
  • the control value may be changed to a constant slope.
  • the displacement of the spool of the control valve 20 is 40 with respect to the maximum displacement at the operation request time t0 of the front work device 50.
  • the control value may be calculated to be from% to 80%.
  • the displacement of the spool of the control valve 20 is 40 with respect to the maximum displacement at the operation request time t0 of the front work device 50.
  • the control value may be calculated to be from% to 65%.
  • the displacement of the spool of the control valve 20 is 55 with respect to the maximum displacement at the operation request time t0 of the front work device 50.
  • the control value may be calculated to be from% to 75%.
  • the hydraulic circuit control device of a construction machine according to an embodiment of the present invention, the control value from the operation time point t0 of the front work device 50 to the time point t2 when the displacement of the spool becomes the maximum This may be increasing.
  • the hydraulic circuit control device of a construction machine according to an embodiment of the present invention, the control value from the operation time point t0 of the front work device 50 to the time point t2 when the displacement of the spool becomes the maximum It may be changed to this constant slope (a).
  • the flow rate of the first pump can be provided to the front work device early when traveling and work is required at the same time, thereby the front work device is You can actually advance the starting point of operation.
  • the hydraulic circuit control apparatus of the construction machine by controlling the displacement of the spool of the control valve to a constant slope can mitigate the impact due to the running speed deceleration.
  • FIG 1 and 2 are views for explaining the hydraulic circuit of the construction machine according to an embodiment of the present invention.
  • FIG 3 is a view for explaining the flow rate change according to the switching of the control valve in the hydraulic circuit control device of a construction machine according to an embodiment of the present invention.
  • FIG. 4 is a view for explaining a hydraulic circuit control method of a construction machine according to an embodiment of the present invention.
  • FIG. 5 is a view for explaining a control map for controlling the control valve in the hydraulic circuit control apparatus of a construction machine according to an embodiment of the present invention.
  • FIG. 6 is a view for explaining the effect of the hydraulic circuit control device of a construction machine according to an embodiment of the present invention.
  • FIGS. 1 and 2 are views for explaining a hydraulic circuit of a construction machine according to an embodiment of the present invention.
  • Hydraulic control apparatus for a construction machine as shown in Figures 1 and 2, the first, the second pump (11, 12), the control valve 20, the main control valve and various actuators can do.
  • the first and second pumps 11 and 12 form a pressure in the hydraulic oil and discharge the same.
  • the control valve 20 is disposed between the first and second pumps 11 and 12 and the main control valve to determine the flow direction of the hydraulic oil discharged from the first and second pumps 11 and 12.
  • Various actuators may include a first travel motor 41, a second travel motor 42, and a front work device 50.
  • the front work device 50 described above may include a boom cylinder, an arm cylinder, a bucket cylinder.
  • the front work device 50 may be divided into a first actuator group 51 and a second actuator group 52.
  • the first actuator group 51 may include an arm 2 speed cylinder, a boom 1 speed cylinder, and a bucket cylinder.
  • the first actuator group 51 may further include an optional device.
  • the second actuator group 52 may include an arm 1 speed cylinder, a boom 2 speed cylinder, and a swing motor, while the second actuator group 52 may further include another option device.
  • the control valve 20 may be a two position four port valve.
  • the hydraulic oil discharged from the first pump 11 is provided to the first travel motor 41 and the first actuator group 51.
  • the hydraulic oil discharged from the second pump 12 is provided to the second driving motor 42 and the second actuator group 52.
  • the hydraulic oil discharged from the first pump 11 is provided to the first actuator group 51 and the second actuator group 52.
  • the hydraulic oil discharged from the second pump 12 is provided to the first travel motor 41 and the second travel motor 42.
  • the first pump 11 is in charge of the front work device 50, and the second pump 12 is connected to the first travel motor 41 and the second. It is in charge of the traveling motor 42. This improves the straightness of travel when the construction machine travels.
  • Figure 3 is a view for explaining the flow rate change according to the switching of the control valve in the hydraulic circuit control device of a construction machine according to an embodiment of the present invention.
  • the control valve 20 determines the position of the spool according to the strength of the current value. As the spool of the control valve 20 moves, the flow direction of the hydraulic oil and the flow rate of the hydraulic oil change. That is, the flow path area varies according to the displacement of the spool. The flow path increases with a wide flow path area, and the flow rate decreases with a narrow flow path area.
  • the first port A is connected to the first pump 11.
  • the second port B is connected to the first control valve 31 for controlling the first travel motor 41.
  • the third port C is connected to the second actuator group 52.
  • the fourth port D is connected to the second pump 12.
  • the first flow path is a flow path connected from the first port A to the second port B.
  • the second flow path is a flow path connected from the fourth port D to the third port C.
  • the third flow path is a flow path connected from the first port A to the third port C.
  • the fourth flow path is a flow path connected from the fourth port D to the second port B.
  • FIG. 3 shows the flow path area diagrams of the first, third and fourth flow paths, and it is possible to understand how the flow rates of the flow paths change as the displacement of the spool of the control valve 20 changes.
  • the hydraulic circuit control device for a construction machine may include an input unit 100, the control unit 400.
  • the controller 400 may include a processor 200 and a performer 300.
  • FIG. 4 is a view for explaining a hydraulic circuit control method of a construction machine according to an embodiment of the present invention.
  • the joystick 110 generates a first operation signal for operating the front work device 50.
  • the driving pedal 120 generates a second operation signal for operating the first and second driving motors 41 and 42.
  • the input unit 100 receives a first operation signal for operating the front work device 50 and a second operation signal for driving. That is, only one of the first operation signal and the second operation signal may be input to the input unit 100, the other signal may be input after the input of one signal, and the first and second operations may be performed. All of the signals may be input.
  • control unit 400 calculates a control value for controlling the control valve 20 based on the control map, and outputs the control value to the control valve 20. do.
  • the control unit 400 will be described in more detail as follows.
  • the processing unit 200 determines that the front work device operation is required while driving in the determination unit 210.
  • the processor 200 calculates a control value for controlling the control valve 20 based on the control map 220.
  • control value may be understood as a current value to be applied to the control valve 20. That is, when the current value is maximum, the displacement of the spool of the control valve 20 may be maximum.
  • the output unit 300 outputs the control value calculated by the processing unit 200 to the control valve 20, whereby the control valve 20 may be controlled by the control value.
  • the displacement of the spool of the control valve 20 is controlled in accordance with the control map, so that when the operation of the front work device 50 is required,
  • the area of the flow path may be increased such that a portion of the flow rate of the second pump 12 is provided to the front work device 50. This can advance the time at which the front work device 50 actually starts to operate.
  • the displacement of the spool of the control valve 20 is controlled in accordance with the control map, so that the area of the third flow path is increased in proportion to that of the first flow path.
  • the decreasing rate can be controlled to decrease at a slow rate. As a result, the driving speed can be prevented from suddenly decelerating and the shock can be prevented.
  • the flow rate discharged from the second pump 12 may be supplied to the first travel motor 41.
  • the second pump 12 can supply the flow rate not only to the second travel motor 42 but also to the first travel motor 41, and in particular, to supply the flow rate to the first and second travel motors 41 and 42 at the same time. This can improve the straight running performance.
  • the displacement of the spool of the control valve 20 is 40% to the maximum displacement at the operation time t0 of the front work device 50.
  • the control value can be calculated to be 80%.
  • a part of the discharge flow rate of the second pump 12 may be provided to the front work device 50 through the third flow path. A good flow rate is then provided so that the operation of the front tool can be smoothly implemented.
  • the hydraulic oil is continuously provided to the first travel motor 41 through the first flow path, thereby rapidly reducing the traveling speed of the construction machine. It can prevent.
  • the displacement of the spool of the control valve 20 is 40 with respect to the maximum displacement at the operation time t0 of the front work device 50.
  • the control value may be calculated to be from% to 65%. This allows the front work tool 50 to be operated in an optimized range that does not slow down the operation speed of the front work tool 50.
  • the displacement of the spool of the control valve 20 is 55 with respect to the maximum displacement at the operation request time t0 of the front work device 50.
  • the control value may be calculated to be from% to 75%.
  • the displacement of the spool of the control valve 20 is 55% or more with respect to the maximum displacement, it can be tuned to improve the speed of the work machine.
  • the displacement of the spool of the control valve 20 is 75% or less with respect to the maximum displacement can be tuned to smoothly decelerate running.
  • FIG. 5 is a view for explaining a control map for controlling the control valve in the hydraulic circuit control apparatus of a construction machine according to an embodiment of the present invention.
  • the control value is a predetermined slope (from the operation request time t0 of the front work device 50 to the time point t2 at which the displacement of the spool is maximum ( can be changed constantly to a).
  • the above-mentioned predetermined inclination (a) may be set and shipped from the manufacturer, or may be newly set as desired.
  • Input step A step of receiving a first operation signal for operating the front work device 50 or a second operation signal for driving. That is, when only the second operation signal is input, it may be determined that only driving is performed. However, when the first operation signal is input in a situation where the second operation signal is being input, it is intended to operate the front work device while driving. You can judge.
  • the pilot pressure is generated. Therefore, whether the first operation signal is input may be determined based on whether a pilot pressure is formed in the pilot line.
  • a second operation signal is generated. The second operation signal can be known based on the on / off state of the control valve 20.
  • Calculation step If it is determined whether the first operation signal and the second operation signal are all input, and it is determined that the first and second operation signals are being simultaneously input, the control value of the control valve 20 based on the control map. This is the step being calculated. That is, when it is determined that the front work device is operated while driving, the spool of the control valve 20 is controlled to change the area of the first, second, third and fourth flow paths. This may increase the flow rate provided to the front work device 50 at a specific point in time. The specific time point is a time t0 at which the operation of the front work device is required while driving.
  • the control valve 20 is controlled according to the control value calculated in the calculating step. As a result, the control valve 20 may implement a specific displacement at a specific time point.
  • the displacement of the spool of the control valve 20 is controlled in accordance with the control map, at the time (t0) when the operation of the front work device 50 is required.
  • a portion of the flow rate of the second pump 12 may be provided to the front work device 50. This can advance the time t1 at which the front work device 50 actually starts to operate.
  • the displacement of the spool of the control valve 20 is controlled according to the control map, so that the area of the third flow path is increased in proportion to the increase of the area of the first flow path.
  • the decreasing rate can be controlled to decrease at a slow rate. As a result, the driving speed can be prevented from suddenly decelerating and the shock can be prevented.
  • the control value is the displacement of the spool of the control valve 20 with respect to the maximum displacement
  • the control value can be set to be 50% to 70%.
  • the control value is a constant slope from the operation request time (t0) of the front work device 50 to the time point (t2) the displacement of the spool is maximum can be changed according to (a).
  • FIG. 6 is a view for explaining the effect of the hydraulic circuit control device of a construction machine according to an embodiment of the present invention.
  • the displacement of the spool gradually increases from the operation request time t0 of the front work device 50 to the time t2 at which the displacement of the spool spool becomes maximum.
  • the flow rate discharged from the first pump 11 is distributed at the maximum flow rate to the first travel motor 41 and is hardly distributed to the front work device 50.
  • the flow rate discharged from the second pump 12 is distributed at the maximum flow rate to the second travel motor 42 and is rarely distributed to the first travel motor 41.
  • the spool of the control valve 20 is moved so that the displacement of the spool increases to the extent that the operation of the front work device 50 can be started. That is, the operation start time t1 of the front work device 50 is after a predetermined time is delayed from the operation request time t0 of the front work device 50.
  • the flow rate distributed to the first travel motor 41 among the flow rates discharged from the first pump 11 is reduced, The flow rate distributed to the front tool 50 by the reduced flow rate is increased.
  • the flow rate distributed to the second travel motor 42 among the flow rates discharged from the second pump 12 is reduced, and the flow rate distributed to the first travel motor 41 is increased by the reduced flow rate.
  • the flow rate changes rapidly while driving.
  • an impact may occur.
  • the displacement of the spool starts from the starting displacement.
  • the starting displacement may be a displacement in which the position of the spool has already moved much more than the initial displacement according to the first embodiment. And the displacement of the spool is gradually increased until the maximum from the starting displacement.
  • the flow rate distributed to the first travel motor 41 among the flow rates discharged from the first pump 11 gradually decreases, and the front work device by the reduced flow rate.
  • the flow rate dispensed to 50 is increased.
  • the flow rate distributed to the second travel motor 42 among the flow rates discharged from the second pump 12 is gradually decreased, and the flow rate distributed to the first travel motor 41 is increased by the reduced flow rate.
  • the start time t1 of operation of the front work device 50 may be the same time point or very close to the time point t0 of operation of the front work device 50.
  • the time required from the start time (t1) of the operation of the front work device 50 to the time point (t2) when the displacement of the spool is maximum It is a relatively long time compared to Example 1. Therefore, since the change in flow rate proceeds for a relatively long time, the change in flow rate may be moderate, and further, the running speed may be prevented from being drastically reduced.
  • the hydraulic circuit control device of the construction machine according to the second embodiment of the present invention is set so that the front work device is actually 40% to 80% of the maximum displacement of the spool displacement of the control valve 20 when traveling and work are simultaneously required.
  • the time to start the operation can be advanced.
  • the hydraulic circuit control device of the construction machine according to the second embodiment of the present invention by controlling the displacement of the spool of the control valve 20 to a constant inclination (a) can be alleviated the impact due to the running speed deceleration. .
  • the hydraulic circuit control device of a construction machine can be used to prevent the start of operation of the front work device when the working device of the front is operated while the construction machine is running. have.

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  • Fluid Mechanics (AREA)
  • Operation Control Of Excavators (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

La présente invention concerne un appareil de commande du circuit hydraulique d'un équipement de construction. L'appareil de commande du circuit hydraulique d'un équipement de construction selon un mode de réalisation de la présente invention est configuré de sorte que lorsqu'un déplacement et du travail sont requis en même temps, le flux d'une première pompe peut être fourni de façon précoce à un appareil de travail avant, ce qui permet d'avancer l'instant de lancement réel du fonctionnement de l'appareil de travail avant. De plus, l'appareil de commande du circuit hydraulique d'un équipement de construction selon le mode de réalisation de la présente invention permet de commander le tiroir cylindrique d'une vanne de commande (20) conformément à une carte de commande et peut ainsi atténuer un impact provoqué par une réduction de la vitesse de déplacement.
PCT/KR2015/012417 2014-11-20 2015-11-18 Appareil de commande de circuit hydraulique d'équipement de construction WO2016080760A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201580065189.5A CN107002390A (zh) 2014-11-20 2015-11-18 工程机械的液压回路控制装置
KR1020177016343A KR102088091B1 (ko) 2014-11-20 2015-11-18 건설기계의 유압회로 제어 장치
EP15861005.5A EP3222784A4 (fr) 2014-11-20 2015-11-18 Appareil de commande de circuit hydraulique d'équipement de construction

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2014-0162836 2014-11-20
KR20140162836 2014-11-20

Publications (1)

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WO2016080760A1 true WO2016080760A1 (fr) 2016-05-26

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EP (1) EP3222784A4 (fr)
KR (1) KR102088091B1 (fr)
CN (1) CN107002390A (fr)
WO (1) WO2016080760A1 (fr)

Families Citing this family (2)

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Publication number Priority date Publication date Assignee Title
KR102564414B1 (ko) * 2018-10-29 2023-08-08 에이치디현대인프라코어 주식회사 건설기계의 주행 제어 시스템 및 건설기계의 주행 제어 방법
CN111691492B (zh) * 2020-06-30 2022-06-28 徐州徐工挖掘机械有限公司 挖掘机的液压系统和挖掘机

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070074511A1 (en) * 2005-09-30 2007-04-05 Caterpillar Inc. Multi-pump control system and method
KR20090070802A (ko) * 2007-12-27 2009-07-01 두산인프라코어 주식회사 건설장비의 전자유압 시스템
KR20140009998A (ko) * 2010-12-27 2014-01-23 볼보 컨스트럭션 이큅먼트 에이비 건설기계의 유압시스템
KR20140017510A (ko) * 2010-12-27 2014-02-11 볼보 컨스트럭션 이큅먼트 에이비 건설기계용 주행 제어시스템
KR20140074324A (ko) * 2011-10-07 2014-06-17 볼보 컨스트럭션 이큅먼트 에이비 건설기계용 우선 제어시스템

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4345436A (en) * 1980-04-07 1982-08-24 Caterpillar Tractor Co. Control for load sharing pumps
JP3013225B2 (ja) * 1995-01-11 2000-02-28 新キャタピラー三菱株式会社 吊り作業制御装置
JP3491600B2 (ja) * 2000-04-13 2004-01-26 コベルコ建機株式会社 建設機械の油圧制御回路
KR100797315B1 (ko) 2001-07-16 2008-01-23 두산인프라코어 주식회사 굴삭기의 주행 및 프론트작업의 복합작업용 유압제어장치
KR100988429B1 (ko) 2003-12-26 2010-10-18 두산인프라코어 주식회사 굴삭기의 주행복합작업용 유압제어장치
JP4380643B2 (ja) 2006-02-20 2009-12-09 コベルコ建機株式会社 作業機械の油圧制御装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070074511A1 (en) * 2005-09-30 2007-04-05 Caterpillar Inc. Multi-pump control system and method
KR20090070802A (ko) * 2007-12-27 2009-07-01 두산인프라코어 주식회사 건설장비의 전자유압 시스템
KR20140009998A (ko) * 2010-12-27 2014-01-23 볼보 컨스트럭션 이큅먼트 에이비 건설기계의 유압시스템
KR20140017510A (ko) * 2010-12-27 2014-02-11 볼보 컨스트럭션 이큅먼트 에이비 건설기계용 주행 제어시스템
KR20140074324A (ko) * 2011-10-07 2014-06-17 볼보 컨스트럭션 이큅먼트 에이비 건설기계용 우선 제어시스템

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3222784A4 *

Also Published As

Publication number Publication date
CN107002390A (zh) 2017-08-01
EP3222784A1 (fr) 2017-09-27
KR20170091115A (ko) 2017-08-08
KR102088091B1 (ko) 2020-04-28
EP3222784A4 (fr) 2018-08-01

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