JP2017180033A5 - - Google Patents

Download PDF

Info

Publication number
JP2017180033A5
JP2017180033A5 JP2016072867A JP2016072867A JP2017180033A5 JP 2017180033 A5 JP2017180033 A5 JP 2017180033A5 JP 2016072867 A JP2016072867 A JP 2016072867A JP 2016072867 A JP2016072867 A JP 2016072867A JP 2017180033 A5 JP2017180033 A5 JP 2017180033A5
Authority
JP
Japan
Prior art keywords
rotational speed
prime mover
hydraulic
valve
hydraulic oil
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.)
Granted
Application number
JP2016072867A
Other languages
Japanese (ja)
Other versions
JP6640641B2 (en
JP2017180033A (en
Filing date
Publication date
Application filed filed Critical
Priority to JP2016072867A priority Critical patent/JP6640641B2/en
Priority claimed from JP2016072867A external-priority patent/JP6640641B2/en
Priority to US15/475,136 priority patent/US10618527B2/en
Publication of JP2017180033A publication Critical patent/JP2017180033A/en
Publication of JP2017180033A5 publication Critical patent/JP2017180033A5/ja
Application granted granted Critical
Publication of JP6640641B2 publication Critical patent/JP6640641B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Description

前記制御部は、前記目標回転数毎に前記低下量を判定するための前記判定値を有している。
前記制御部は、前記目標回転数が大きくなるにしたがって傾きが小さく設定された第1制御特性を用いて前記作動弁の制御を行う
The control unit has the determination value for determining the amount of decrease for each target rotational speed.
The control unit controls the operation valve using a first control characteristic in which the inclination is set to be small as the target rotational speed is increased .

Claims (4)

原動機と、
前記原動機の目標回転数を設定する設定部材と、
前記原動機の駆動により作動可能で且つ作動油を吐出する油圧ポンプと、
前記油圧ポンプから吐出した作動油が供給される作動弁と、
前記作動弁の作動油によって作動可能な油圧機器と、
前記原動機の負荷が所定以上での前記作動弁の作動油の圧力と原動機の実回転数との関係を示す特性であって前記目標回転数に対応して定められた複数の第1制御特性と、前記原動機の負荷が所定未満での前記作動弁の作動油の圧力と原動機の実回転数との関係を示す第2制御特性とを記憶する記憶部と、
前記目標回転数からの前記実回転数の低下量が予め定められた判定値未満である場合には前記第2制御特性に基づいて前記作動弁の制御を行い、前記低下量が前記実回転数の判定値以上である場合には前記目標回転数に応じて定められた前記第1制御特性に基づいて前記作動弁の制御を行う制御部と、
を備えている作業機の油圧システム。
Prime mover,
A setting member for setting a target rotational speed of the prime mover;
A hydraulic pump operable by driving the prime mover and discharging hydraulic oil;
An operating valve to which hydraulic oil discharged from the hydraulic pump is supplied;
Hydraulic equipment operable by hydraulic fluid of the operating valve;
A plurality of first control characteristics determined in correspondence with the target rotational speed, each of which is a characteristic indicating a relationship between a hydraulic oil pressure of the working valve and an actual rotational speed of the prime mover when a load of the prime mover is equal to or greater than a predetermined value; A storage unit that stores a second control characteristic indicating a relationship between the pressure of the hydraulic oil of the operating valve and the actual rotational speed of the prime mover when the load of the prime mover is less than a predetermined value;
When the decrease amount of the actual rotation number from the target rotation number is less than a predetermined determination value, the operation valve is controlled based on the second control characteristic, and the decrease amount is the actual rotation number. A control unit that controls the operating valve based on the first control characteristic determined according to the target rotational speed when the determination value is equal to or greater than
The working machine's hydraulic system.
前記制御部は、前記目標回転数毎に前記低下量を判定するための前記判定値を有している請求項1に記載の作業機の油圧システム。   2. The hydraulic system for a working machine according to claim 1, wherein the control unit has the determination value for determining the amount of decrease for each target rotational speed. 前記制御部は、前記目標回転数が大きくなるにしたがって値が大きく設定された前記判定値を用いて前記作動弁の制御を行う請求項2に記載の作業機の油圧システム。   3. The hydraulic system for a working machine according to claim 2, wherein the control unit controls the operation valve using the determination value that is set to a larger value as the target rotational speed increases. 原動機と、
前記原動機の目標回転数を設定する設定部材と、
前記原動機の駆動により作動可能で且つ作動油を吐出する油圧ポンプと、
前記油圧ポンプから吐出した作動油が供給される作動弁と、
前記作動弁の作動油によって作動可能な油圧機器と、
前記作動弁の作動油の圧力と原動機の実回転数との関係を示す特性であって前記目標回転数に対応して定められた複数の第1制御特性と、前記作動弁の作動油の圧力と原動機の実回転数との関係を示す第2制御特性とを記憶する記憶部と、
前記目標回転数からの前記実回転数の低下量が予め定められた判定値未満である場合に
は前記第2制御特性に基づいて前記作動弁の制御を行い、前記低下量が前記実回転数の判定値以上である場合には前記目標回転数に応じて定められた前記第1制御特性に基づいて前記作動弁の制御を行う制御部と、
を備えている作業機の油圧システム。
Prime mover,
A setting member for setting a target rotational speed of the prime mover;
A hydraulic pump operable by driving the prime mover and discharging hydraulic oil;
An operating valve to which hydraulic oil discharged from the hydraulic pump is supplied;
Hydraulic equipment operable by hydraulic fluid of the operating valve;
A plurality of first control characteristics, which indicate a relationship between the pressure of the hydraulic oil of the working valve and the actual rotational speed of the prime mover, and are determined corresponding to the target rotational speed, and the pressure of the hydraulic oil of the working valve And a storage unit for storing a second control characteristic indicating a relationship between the actual rotational speed of the prime mover,
When the decrease amount of the actual rotation number from the target rotation number is less than a predetermined determination value, the operation valve is controlled based on the second control characteristic, and the decrease amount is the actual rotation number. A control unit that controls the operating valve based on the first control characteristic determined according to the target rotational speed when the determination value is equal to or greater than
The working machine's hydraulic system.
JP2016072867A 2016-03-31 2016-03-31 Working machine hydraulic system Active JP6640641B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2016072867A JP6640641B2 (en) 2016-03-31 2016-03-31 Working machine hydraulic system
US15/475,136 US10618527B2 (en) 2016-03-31 2017-03-31 Hydraulic system for work machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2016072867A JP6640641B2 (en) 2016-03-31 2016-03-31 Working machine hydraulic system

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP2017248143A Division JP6707514B2 (en) 2017-12-25 2017-12-25 Hydraulic system of work equipment

Publications (3)

Publication Number Publication Date
JP2017180033A JP2017180033A (en) 2017-10-05
JP2017180033A5 true JP2017180033A5 (en) 2018-02-08
JP6640641B2 JP6640641B2 (en) 2020-02-05

Family

ID=60003925

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2016072867A Active JP6640641B2 (en) 2016-03-31 2016-03-31 Working machine hydraulic system

Country Status (1)

Country Link
JP (1) JP6640641B2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11047111B2 (en) * 2018-08-21 2021-06-29 Deere & Company Work vehicle with constant velocity implement actuation
JP6935038B2 (en) * 2019-03-28 2021-09-15 日立建機株式会社 Construction machinery
JP7399820B2 (en) * 2020-08-15 2023-12-18 株式会社クボタ work equipment
JP7399821B2 (en) * 2020-08-15 2023-12-18 株式会社クボタ work equipment
JP7399822B2 (en) * 2020-08-15 2023-12-18 株式会社クボタ work equipment
CN113738626B (en) * 2021-08-16 2024-03-19 三一汽车起重机械有限公司 Hydraulic system for work machine, control method, and work machine

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4493990B2 (en) * 2003-11-26 2010-06-30 日立建機株式会社 Traveling hydraulic working machine
JP2010133469A (en) * 2008-12-03 2010-06-17 Caterpillar Japan Ltd Working vehicle
CN102770645B (en) * 2010-02-03 2015-05-20 株式会社小松制作所 Engine control device
JP5687970B2 (en) * 2011-08-10 2015-03-25 株式会社クボタ Working machine
JP5669692B2 (en) * 2011-08-10 2015-02-12 株式会社クボタ Working machine
JP5687971B2 (en) * 2011-08-10 2015-03-25 株式会社クボタ Working machine
CN103958319B (en) * 2011-10-27 2016-11-23 沃尔沃建筑设备公司 For the method controlling the speed of vehicle

Similar Documents

Publication Publication Date Title
JP2017180033A5 (en)
US9739266B2 (en) Fluid-working machine and method of operating a fluid-working machine
JP2012180683A5 (en)
KR102067838B1 (en) Hydraulic system of Construction machinery
JP2012082643A5 (en)
WO2009038017A1 (en) Engine control device
EP2444299A3 (en) Hydraulic power steering system
JP2016031125A (en) Revolution control device for construction machine
EP2918735A3 (en) Hydraulic driving apparatus for working machine
WO2012154463A2 (en) Method,apparatus,and computer-readable storage medium for controlling torque load of multiple variable displacement hydraulic pumps
JP2015140763A (en) Engine pump control device and work machine
JP2020041700A5 (en)
WO2013128622A1 (en) Method for controlling variable displacement pump
JP5898390B1 (en) FORKLIFT AND FORKLIFT CONTROL METHOD
RU2017140422A (en) HYDRAULIC CONTROL DEVICE AND HYDRAULIC CONTROL METHOD FOR VEHICLE
RU2017114897A (en) METHOD FOR HYDRAULIC STRENGTHENING OF DRIVING A VEHICLE AT A LOW SPEED
CN106740855B (en) A kind of power distribution control method and device of mobile operation vehicle
JP2019049102A5 (en)
WO2011118301A8 (en) Hydraulic circuit for working vehicle
JP2014080155A5 (en)
JP6367676B2 (en) Hydraulic circuit control device and hydraulic circuit control method
RU2015119187A (en) Pump control method
KR20180004173A (en) Apparatus and method for controlling a work machine
EP3043084A3 (en) Clutch control system
JP6970533B2 (en) Hydraulic system