WO2009094926A1 - Raccord rapide d'outillage et machine l'utilisant - Google Patents

Raccord rapide d'outillage et machine l'utilisant Download PDF

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Publication number
WO2009094926A1
WO2009094926A1 PCT/CN2009/070176 CN2009070176W WO2009094926A1 WO 2009094926 A1 WO2009094926 A1 WO 2009094926A1 CN 2009070176 W CN2009070176 W CN 2009070176W WO 2009094926 A1 WO2009094926 A1 WO 2009094926A1
Authority
WO
WIPO (PCT)
Prior art keywords
hydraulic
coupler
actuator
machine
tool
Prior art date
Application number
PCT/CN2009/070176
Other languages
English (en)
Inventor
Sean W. Johnson
Sixin Wang
Original Assignee
Caterpillar Inc.
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 Caterpillar Inc. filed Critical Caterpillar Inc.
Publication of WO2009094926A1 publication Critical patent/WO2009094926A1/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • 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
    • E02F9/2275—Hoses and supports therefor and protection therefor

Definitions

  • the present disclosure relates generally to a tool quick coupler for a machine, and more particularly to utilizing a fluid connection to and from the implement hydraulic system of the machine to actuate a tool quick coupler.
  • Wheel loaders designate a group of machines generally identified by a chassis supported by four wheels that carry hydraulically actuated boom and bucket actuators. Wheel loaders are known to come in a variety of sizes and shapes and may be steered using conventional wheel steering techniques or hydraulically via an articulated chassis. Although the tool most often associated with a wheel loader is a loader bucket, wheel loaders can be configured with a variety of different tools for specific applications including but not limited to ground engaging tools, forks, blades, rakes, brooms, material handling arms, snow removal plows and several others. In many instances, the wheel loader will be configured with a certain tool for performing a designated duty cycle which does not change.
  • a wheel loader may utilize a general purpose bucket for much of its duty cycle, but also utilize forks during a different part of a work day.
  • hydraulically actuated quick couplers enable an operator to disengage the machine from one tool and couple the machine to a second tool, often without needing to leave the operator compartment.
  • a Caterpillar 950H wheel loader may either manual pin actuation or utilize hydraulic fluid from a continuously pressurized reservoir associated with hydraulic wheel brake actuators for providing the necessary pressurized hydraulic fluid to operate the quick coupler.
  • a Caterpillar 950H wheel loader may either manual pin actuation or utilize hydraulic fluid from a continuously pressurized reservoir associated with hydraulic wheel brake actuators for providing the necessary pressurized hydraulic fluid to operate the quick coupler.
  • not all wheel loaders have a readily available continuous supply of pressurized fluid available for operating a quick coupler. Changing tools on such machines can be a labor intensive and time consuming process.
  • the present disclosure is directed to one or more of the problems set forth above.
  • a machine in one aspect, includes an implement hydraulic system with a hydraulic boom actuator and a hydraulic bucket actuator.
  • a tool quick coupler assembly
  • a control valve is fluidly positioned between the implement hydraulic system and the hydraulic coupler actuator.
  • a method of operating a machine includes moving a coupler pin toward a decoupling position. Hydraulic fluid is supplied from an implement hydraulic system to a hydraulic coupler actuator. An electrical actuator coupled to a control valve is simultaneously energized while actuating a hydraulic implement actuator.
  • a hydraulic system in still another aspect, includes an open center boom control valve member and an open center bucket control valve member positioned in a valve housing.
  • a first adapter which defines a pump supply port and a coupler supply port, is attached over a pump port of the valve housing.
  • a second adapter which defines a tank return port and a coupler return port, is attached over a tank port of the valve housing.
  • Figure 1 is a general view of a machine according to one aspect of the present disclosure
  • Figure 2 is an exemplary view of a tool quick coupler assembly according to another aspect of the present disclosure.
  • Figure 3 is a schematic view of a hydraulic system circuitry for the machine of Figure 1.
  • a machine 10 is illustrated as a wheel loader, but may be any other suitable machine such as a telehandler, an excavator or any other of the numerous machines that utilize a hydraulic implement system and may utilize two or more different tools.
  • Wheel loader 10 includes a chassis that is supported by four wheels in a conventional manner.
  • the chassis carries a boom that may be raised and lowered via a hydraulic boom actuator 15, and also carries a tool 18, which may be extended and retracted via a hydraulic bucket actuator 14 in a conventional manner.
  • an intervening quick coupler 30 interconnects boom 12 to tool 18, which is illustrated as a bucket.
  • Bucket 18 may include a hook 19 that engages a bar 31 of tool coupler assembly 30.
  • tool quick coupler assembly 30 includes a base 32 that is securely attached to boom 12 using conventional techniques, such as fastener bolts and the like.
  • extending and retracting hydraulic bucket actuator 14 causes tool coupler assembly 30 to extend and retract relative to boom 12 in a known manner.
  • Tool quick coupler assembly 30 includes a pair of coupler pins 33 and 34 which may be moved into place and received in counterpart pin bores 20 of a tool to facilitate attachment of tool 18 to machine 10.
  • Bar 31 may be positioned at any suitable location on tool quick coupler assembly 30.
  • Coupler pins 33 and 34 move horizontally via the action of a hydraulic coupler actuator 35 via intervening mechanical links 38.
  • Hydraulic coupler actuator 35 may be a double action hydraulic cylinder or two separate hydraulic cylinders.
  • a control valve 40 may be mounted adjacent hydraulic coupler actuator 35 and provides the means by which hydraulic fluid from a hydraulic coupler supply line supply hose 36 causes hydraulic coupler actuator 35 to extend or retract. Low pressure hydraulic fluid from hydraulic coupler actuator 35 is returned via a coupler return hose 37.
  • the hydraulic system for the machine of Figure 1 includes an implement hydraulic system 60, a steering hydraulic system 90 and the hydraulics associated with the tool coupler assembly 30 shown in Figure 2.
  • Implement hydraulic system 60 includes many features well known in the art including implement control valves 61 located in the operator compartment 13 in order to control the actuation of hydraulic boom actuator(s) 15 and hydraulic bucket actuator 14 via a valve block assembly 69.
  • the control valve 61 operate pilot valves to deliver hydraulic fluid to opposite ends of open center boom control valve member 72 and open center bucket control valve member 73 to reposition the same in a valve housing 70, which is a portion of the valve block assembly 69.
  • valve members 73 and 72 are open center valve members that result in pump 63 circulating hydraulic fluid at relatively low pressure from tank 62, through valve block assembly 69, and back to tank 62 for recirculation.
  • Hydraulic fluid is supplied from pump 63 via a pump hose 64 that is connected to a pump supply port 80 of an adapter 75 that is attached to valve housing 70.
  • hose is intended to encompass any collection of conduits (flexible or rigid) and any fittings for transporting fluid from one location to another within a system.
  • Adapter 75 may be attached over the pump port 74 of valve housing 70.
  • Adapter 75 also includes a coupler supply port 79 that facilitates connection to coupler supply hose 36, which is also shown in Figure 2.
  • return fluid returns to tank 62 via a tank hose 65 that is connected to a tank return port 78 of an adapter 76, which is also attached to valve housing 70.
  • Adapter 76 may be substantially identical to adapter 75 and includes a coupler return port 77 that facilitates connection to coupler return hose 37, which is also shown in Figure 2.
  • Adapter 76 may be attached over tank port 71 of valve housing 70.
  • This implementation strategy of the tool coupler assembly allows for incorporation into the implement hydraulic system 60 without any substantial modification to the implement hydraulic system other than the addition of adapters 75 and 76.
  • a machine without a tool quick coupler assembly 30 of the present disclosure would show pump hose 64 connected directly to pump port 70 of valve housing, and tank hose 65 connected directly to tank port 71 of valve housing 70.
  • the necessary hydraulic connections for the tool quick coupler assembly 30 of the present disclosure can be accomplished simply by disconnecting the existing pump hose 64 and tank hose 65 from valve housing 70, attaching adapters 75 and 76 to valve housing 70, and then reattaching the pump hose 64 and tank hose 65 to the respective pump supply port 80 and tank return port 78 of the adapter 75 and 76.
  • Coupler supply hose 36 is connected to coupler supply port 79, and coupler return hose 37 is connected to coupler return port 77. Nevertheless, those skilled in the art will appreciate that coupler supply hose 36 and coupler return hose 37 could be connected to implement hydraulic system 60 elsewhere, such as directly to the lines extending between hydraulic bucket actuator 14 and valve block assembly 69, without departing from the present disclosure.
  • Tool quick coupler assembly 30 includes a control valve 40 that is fluidly positioned between the implement hydraulic system 60 and the hydraulic coupler actuator 35.
  • Control valve 40 may include an electrical actuator 56, such as a solenoid, and a control valve member 43 that is movable between a decoupling position as shown with electrical actuator 56 energized, and a coupling position when electrical actuator 56 is deenergized due to the biasing force of a spring 44.
  • Control valve 40 may also include a pressure relief valve 46 if desired.
  • the tool quick coupler assembly 30 may also include a pair of ball valves 45 that facilitate detachment of the subassembly shown in Figure 2, such as for servicing and the like.
  • Electrical actuator 56 may be connected to the electrical switch 50 described earlier as located in the operator compartment 13 via a conventional communication line 54.
  • the electrical switch 50 may include a toggle component 51 that includes an enablement feature 52 coupled to a lock 53. Enablement feature 52 may be moved to one side to retract lock 53 to enable the toggle 51 to move to a position that energizes electrical actuator 56. Thus, more than an accidentally bumping of electrical switch 50 may be necessary in order to energize electrical actuator 56 in order to prevent accidental movement of control valve member 43 during normal operation of machine 10.
  • the present disclosure is applicable to any machine that includes an implement hydraulic system and is configured to be coupled to different tools for carrying out various operations as discussed earlier.
  • the present disclosure finds particular application to wheel loaders, the present disclosure is not so limited as the same concepts may be applied to other machines including but not limited to telehandlers, excavators and other known machines.
  • the present disclosure finds particular applicability to machines that include an implement hydraulic system with normally open center valve strategies and no other hydraulic pressure system, such as hydraulic brakes, that may be tapped and utilized for providing hydraulic fluid to operate a tool quick coupler assembly 30 according to the present disclosure.
  • coupling machine 10 to a tool 18 is accomplished by the machine operator approaching the tool with the hydraulic boom actuator 15 nearly fully retracted and the hydraulic bucket actuator 14 slightly extended so that bar 31 is located at a horizontal position lower than a hook 19 of tool 18.
  • the hydraulic bucket actuator 14 is retracted causing the bar 31 of the tool quick coupler assembly 30 to engage hook 19 of tool 18.
  • a combination of hydraulic bucket actuator retraction and maybe hydraulic boom actuator extension is performed until the base 32 of tool quick coupler assembly 30 contacts a backside of tool 18.
  • coupler pins 33 and 34 should come into alignment with the receiving pin bores 20 if the coupler pins 33 and 34 are in their decoupling position as shown in Figure 2.
  • the coupler pins 33 and 34 may be moved to their decoupling position by simultaneously actuating at least one hydraulic implement actuator 14 or 15 while energizing electrical actuator 56 via appropriate movement of switch 50.
  • Energization of electrical actuator 56 moves control valve member 43 to the position shown in Figure 3, while retracting hydraulic bucket actuator 14 causes pressure to build in pump hose 64, which is fluidly connected to coupler supply hose 36 via adapter 75. If none of the implement actuators 14 or 15 are actuated, pressure in implement hydraulic system 60 remains low due to the normally open center valve configuration, and hence the tool coupler assembly 30 is without hydraulic power to move hydraulic coupler actuator 35 in either direction.
  • the electrical switch 50 may be returned to a de-energized position causing spring 44 to move control valve member 43 to the right.
  • the coupler supply hose 36 causes fluid to extend hydraulic coupler actuator
  • a decoupling operation is performed by typically contracting the hydraulic boom actuator(s) 15 so that the tool 18 is located near the ground.
  • the hydraulic bucket actuator 14 may be slightly extended so that when the coupler pins are moved to a decoupling position, the tool 18 will swing on bar 31 via hook 19 to a position where coupler pins 33 and 34 are out of alignment with pin bore(s) 20 of tool 18, and a bottom edge of the tool 18 contacts the ground.
  • the operator will move enablement feature 52 to allow toggle component 51 to move to a position to energize electrical actuator 56 causing control valve member 43 to move to the position shown in Figure 3. This will cause hydraulic fluid to retract hydraulic coupler actuator 35 and disengage coupler pins 33 and 34 from the respective pin bores 20.
  • the bucket tilt actuator 14 can continue to be extended so that bar 31 disengages from hook 19. The machine operator can then back the machine away from tool 18 and approach a different tool for coupling of a machine 10 as described earlier.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Operation Control Of Excavators (AREA)

Abstract

L'invention concerne une machine (10), telle une chargeuse sur pneus, comprenant un système hydraulique pour outil (60) qui comprend un actionneur de flèche hydraulique (15) et un actionneur de godet hydraulique (14), la machine étant munie d'un raccord rapide d'outillage (30). L'ensemble raccord rapide d'outillage (30) supporté par un châssis (11) de la machine (10) comprend un actionneur de raccord hydraulique (35) relié de manière fluide au système hydraulique pour outil (60) et une valve de distribution (40), qui est positionnée de manière fluide entre le système hydraulique pour outil (60) et l'actionneur de raccord hydraulique (35). La valve de distribution (40) peut être déplacée par un actionneur électrique (56) connecté électriquement à un commutateur (50) dans un boîtier de commande d'opérateur (13). Au cours du changement d'outil, une goupille de raccord (33, 34) de l'ensemble raccord rapide d'outillage (30) est déplacée vers une position de découplage par l'excitation simultanée de l'actionneur électrique (56) tout en actionnant l'actionneur de godet hydraulique (14) afin de créer une pression du fluide dans le système hydraulique pour outil (60) qui utilise des valves à centre ouvert.
PCT/CN2009/070176 2008-01-24 2009-01-16 Raccord rapide d'outillage et machine l'utilisant WO2009094926A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN 200810008816 CN101492923B (zh) 2008-01-24 2008-01-24 工装机具快速连接器及使用该机具连接器的机械
CN200810008816.3 2008-01-24

Publications (1)

Publication Number Publication Date
WO2009094926A1 true WO2009094926A1 (fr) 2009-08-06

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PCT/CN2009/070176 WO2009094926A1 (fr) 2008-01-24 2009-01-16 Raccord rapide d'outillage et machine l'utilisant

Country Status (2)

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CN (1) CN101492923B (fr)
WO (1) WO2009094926A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102199926A (zh) * 2011-04-29 2011-09-28 中国人民解放军总后勤部建筑工程研究所 多功能工程机械属具快换机构
GB2517831A (en) * 2013-06-24 2015-03-04 Kinshofer Greiftechnik Quick-coupler
US9114815B2 (en) 2013-03-14 2015-08-25 Brandt Road Rail Corporation Assembly for extendable rail-supported vehicle coupler

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2426266B1 (fr) * 2010-09-07 2018-10-17 Caterpillar Work Tools B. V. Agencement de couplage
EP2426267B1 (fr) * 2010-09-07 2020-12-30 Caterpillar Work Tools B. V. Agencement de couplage
WO2012122469A1 (fr) 2011-03-10 2012-09-13 Clark Equipment Company Système de couplage d'outil pour machine électrique
US10029896B2 (en) * 2014-12-17 2018-07-24 Caterpillar Inc. Tool coupler having compact locking configuration
CN111576540A (zh) * 2020-06-05 2020-08-25 上海三一重机股份有限公司 挖掘机属具控制系统及控制方法
CN111980085A (zh) * 2020-08-31 2020-11-24 合肥学院 便捷更换的挖掘铲及具有该挖掘铲的挖掘装载机

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1104282A (zh) * 1992-07-27 1995-06-28 吉尔摩运输服务有限公司 用于重型机械的连接装置
CN1106881A (zh) * 1993-09-29 1995-08-16 乔治·J·克拉克 具有遥控可伸缩销轴的挖斗连接装置
JP2004036635A (ja) * 2002-06-28 2004-02-05 Hitachi Constr Mach Co Ltd 建設機械のクイックヒッチ油圧回路
CN200940273Y (zh) * 2006-07-19 2007-08-29 山东临工工程机械有限公司 一种小型液压挖掘机及挖掘装载机的工作机具快换装置
WO2007129982A1 (fr) * 2006-05-10 2007-11-15 Oilquick Ab Bloc distributeur, porte-outil, engin de chantier et utilisation d'un bloc distributeur

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7168908B2 (en) * 2005-04-27 2007-01-30 Caterpillar Inc Work tool coupling device for a machine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1104282A (zh) * 1992-07-27 1995-06-28 吉尔摩运输服务有限公司 用于重型机械的连接装置
CN1106881A (zh) * 1993-09-29 1995-08-16 乔治·J·克拉克 具有遥控可伸缩销轴的挖斗连接装置
JP2004036635A (ja) * 2002-06-28 2004-02-05 Hitachi Constr Mach Co Ltd 建設機械のクイックヒッチ油圧回路
WO2007129982A1 (fr) * 2006-05-10 2007-11-15 Oilquick Ab Bloc distributeur, porte-outil, engin de chantier et utilisation d'un bloc distributeur
CN200940273Y (zh) * 2006-07-19 2007-08-29 山东临工工程机械有限公司 一种小型液压挖掘机及挖掘装载机的工作机具快换装置

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102199926A (zh) * 2011-04-29 2011-09-28 中国人民解放军总后勤部建筑工程研究所 多功能工程机械属具快换机构
CN102199926B (zh) * 2011-04-29 2012-10-31 中国人民解放军总后勤部建筑工程研究所 多功能工程机械属具快换机构
US9114815B2 (en) 2013-03-14 2015-08-25 Brandt Road Rail Corporation Assembly for extendable rail-supported vehicle coupler
GB2517831A (en) * 2013-06-24 2015-03-04 Kinshofer Greiftechnik Quick-coupler
GB2517831B (en) * 2013-06-24 2016-08-03 Kinshofer Greiftechnik Quick-coupler

Also Published As

Publication number Publication date
CN101492923A (zh) 2009-07-29
CN101492923B (zh) 2013-02-13

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