WO2018052468A1 - Hydraulic clamping systems having load side-shifting variably responsive to load weight - Google Patents

Hydraulic clamping systems having load side-shifting variably responsive to load weight Download PDF

Info

Publication number
WO2018052468A1
WO2018052468A1 PCT/US2016/069365 US2016069365W WO2018052468A1 WO 2018052468 A1 WO2018052468 A1 WO 2018052468A1 US 2016069365 W US2016069365 W US 2016069365W WO 2018052468 A1 WO2018052468 A1 WO 2018052468A1
Authority
WO
WIPO (PCT)
Prior art keywords
load
shifting
control system
clamping
clamp
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/US2016/069365
Other languages
English (en)
French (fr)
Inventor
David W. Petronek
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.)
Cascade Corp
Original Assignee
Cascade Corp
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 Cascade Corp filed Critical Cascade Corp
Priority to AU2016423192A priority Critical patent/AU2016423192B2/en
Priority to CN201680088077.6A priority patent/CN109562520B/zh
Priority to FIEP16916390.4T priority patent/FI3512670T3/fi
Priority to JP2019505217A priority patent/JP6810244B2/ja
Priority to EP16916390.4A priority patent/EP3512670B1/en
Priority to CA3028648A priority patent/CA3028648C/en
Priority to BR112019001939-1A priority patent/BR112019001939B1/pt
Priority to ES16916390T priority patent/ES3036014T3/es
Publication of WO2018052468A1 publication Critical patent/WO2018052468A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/20—Means for actuating or controlling masts, platforms, or forks
    • B66F9/22—Hydraulic devices or systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/12—Platforms; Forks; Other load supporting or gripping members
    • B66F9/14—Platforms; Forks; Other load supporting or gripping members laterally movable, e.g. swingable, for slewing or transverse movements
    • B66F9/146—Side shift, i.e. both forks move together sideways relative to fork support
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/12—Platforms; Forks; Other load supporting or gripping members
    • B66F9/18—Load gripping or retaining means
    • B66F9/183—Coplanar side clamps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/12—Platforms; Forks; Other load supporting or gripping members
    • B66F9/18—Load gripping or retaining means
    • B66F9/184—Roll clamps
    • 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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/161—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load
    • 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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/161—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load
    • F15B11/166—Controlling a pilot pressure in response to the load, i.e. supply to at least one user is regulated by adjusting either the system pilot pressure or one or more of the individual pilot command pressures
    • 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
    • F15B2211/30505—Non-return valves, i.e. check valves
    • F15B2211/3051—Cross-check valves
    • 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
    • F15B2211/30585—Assemblies of multiple valves having a single valve 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
    • F15B2211/30—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
    • 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
    • F15B2211/31—Directional control characterised by the positions of the valve element
    • F15B2211/3105—Neutral or centre positions
    • F15B2211/3116—Neutral or centre positions the pump port being open in the centre position, e.g. so-called open centre
    • 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
    • F15B2211/40—Flow control
    • 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
    • F15B2211/40—Flow control
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40523—Flow control characterised by the type of flow control means or valve with flow dividers
    • 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
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
    • F15B2211/50518—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using pressure relief valves
    • 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
    • F15B2211/50—Pressure control
    • F15B2211/52—Pressure control characterised by the type of actuation
    • F15B2211/528—Pressure control characterised by the type of actuation actuated by fluid pressure
    • 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
    • F15B2211/50—Pressure control
    • F15B2211/575—Pilot pressure control
    • 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
    • F15B2211/67—Methods for controlling pilot pressure
    • 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
    • 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
    • F15B2211/76—Control of force or torque of the output member
    • 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
    • F15B2211/78—Control of multiple output members
    • F15B2211/782—Concurrent control, e.g. synchronisation of two or more actuators

Definitions

  • Hydraulic load-handling clamp assemblies of the type normally mountable on lift trucks and other industrial vehicles for manipulating and transporting loads, often have a pair of transversely openable and closable clamp arms powered by one or more linear or rotary hydraulic actuators for selectively gripping and releasing loads.
  • Such hydraulic clamp assemblies also commonly have a selectable hydraulic side-shifting capability which can move the clamp arms transversely in unison in either of two opposite directions while clamping a load.
  • the same hydraulic actuator(s) which perform the load-clamping function also selectively perform the side-shifting function, thereby
  • Such systems are referred to herein as “integral” load clamping and side-shifting units.
  • the clamp assembly's load-clamping hydraulic actuator(s) are movably carried by a separate side-shifting assembly having its own separate side-shifting hydraulic actuator(s).
  • Fig. 1 is a hydraulic circuit diagram exemplifying a load-handling clamp assembly in an integral combination with a clamp side-shifting assembly, and also showing a load hoisting circuit, all operable in accordance with the present invention.
  • Fig. 2 is a hydraulic circuit diagram exemplifying a non-integral side-shifting assembly in place of the integral side-shifting assembly of Fig. 1, omitting the load-handling clamp assembly for purposes of clarity and also operable in accordance with the present invention.
  • Fig. 3 is a hydraulic circuit diagram similar to Fig. 2 except that its exemplary non- integral side-shifting assembly utilizes a bidirectional rotary hydraulic motor to perform the side-shifting function.
  • Fig. 4 is a hydraulic circuit diagram similar to Fig. 2 except that its exemplary non- integral side-shifting assembly utilizes a reciprocating rotary hydraulic motor to perform the side-shifting function.
  • the hydraulic arrangement shown in Fig. 1 exemplifies a typical integral load clamping circuit 9 for controlling a pair of clamp arms 10, 12 each laterally movable selectively toward or away from each other for selectively clamping or unclamping a load (not shown) between them.
  • the clamp arms are laterally closable toward each other to clamp a load by the introduction of pressurized hydraulic fluid through lines 14, 16 and 18 from a manually or electrically controlled clamp valve 20 which, upon movement toward the right in Fig. 1, introduces hydraulic fluid under pressure from pump 22 through clamping lines 14, 16 and 18 to move pistons 26 and 28 toward each other to clamp a load.
  • hydraulic fluid is exhausted from the opposite sides of the pistons 26 and 28 through lines 36 and 38 respectively, through pilot operated check valves 37 and 39 respectively, and through a conventional flow divider/combiner valve 34 to line 32, from which the fluid is exhausted through valve passageway 25 of clamp valve 20 and exhaust line 27 to a hydraulic fluid reservoir 29.
  • divider/combiner valve 34 and lines 36 and 38 to move the pistons 26 and 28, and their corresponding clamp arms 10 and 12, away from each other thereby opening the clamp arms 10 and 12.
  • hydraulic fluid is exhausted from the pistons 26 and 28 and through lines 16 and 18, through a pilot-operated check valve 40 opened by pressure in line 32, and through line 14 and valve passageway 42 to exhaust line 27 and hydraulic reservoir 29.
  • the clamp arms 10, 12 are laterally movable bidirectionally in unison selectively either to the left or right in Fig. 1 while the load-clamping valve 20 is closed, so as to perform a side-shifting function, either while clamping a load or without any load.
  • the side-shifting control valve 44 upon movement of the side-shifting control valve 44 to the right, hydraulic fluid under pressure is introduced from pump 22 and line 27 through the side-shift valve passageway 46, side- shifting line 48 and thus to line 36, thereby imposing leftward pressure on the piston 26 .
  • the leftward pressure on piston 26 causes clamping fluid in line 16 to be transferred to line 18 of the other clamping cylinder, thereby causing corresponding leftward pressure also on piston 28 and the exhaustion of fluid from line 38 through line 50 and valve passageway 52 to the hydraulic reservoir 29, so that the pistons 26 and 28 side-shift to the left in unison.
  • No leakage of the fluid is permitted through clamping line 14 during the foregoing left side-shifting process because the pilot-operated check valve 40 preserves the clamping pressure.
  • a load hoist valve 56 if moved to the left, selectively conducts hydraulic load-lifting pressurized fluid from line 27 through valve passageway 58 and line 59 to one or more load-hoisting hydraulic cylinders such as 60, 62 which lift the load clamp 10, 12.
  • the load-hoisting cylinders can have any suitable arrangement, including "free lift" cylinder arrangements having different piston diameters for extending sequentially.
  • variable weights of the loads may be sensed preferably, but not necessarily, from variable hydraulic pressure in hoist line 59 through a sensing line 66 of a side-shifting force control circuit 68.
  • valve 70 In response to such decrease in the side-shift relief pressure setting of relief valve 70, valve 70 opens and thereby relieves the side-shifting pressure in line 71, representing the highest pressure in lines 48 or 50 as sensed between check valves 49 and 51, through line 76 and whichever check- valve 78 or 80 and line 48 or 50 is not exposed to side shifting pressure from valve 44 and therefore can exhaust fluid through valve 44 to reservoir 29.
  • the side-shifting pressure in either of lines 48 or 50 is variably limited by the automatically variable relief setting of the valve 70 in response to the variable weight of the load, as sensed through lines 66 and 72.
  • Fig. 2 shows an exemplary alternative side-shifting circuit with a reversible side- shifting linear actuator 100, which need not be integral with the exemplary clamp circuit 9 (not shown).
  • the side-shifting circuit can, if desired, be part of a separate attachment to the lift truck or other load-carrying vehicle, usable in conjunction with a side-shifting unit or as part of a side-shifting unit, possibly together with other attachments which utilize side-shifting such as bale clamps, fork clamps, paper roll clamps, and so forth.
  • FIG. 3 shows a further exemplary alternative side-shifting circuit with a reversible rotary hydraulic motor 102 capable of performing a side-shifting function, and which need not be integral with the clamp circuit 9.
  • Fig. 4 shows a further exemplary alternative side-shifting circuit with a rotationally reciprocating hydraulic motor 104 capable of performing a curved side-to-side swinging motion for layer-picking load clamps, and which need not be integral with the clamp circuit 9.
  • Another example of such a layer picking application could be a telescopic boom clamping force control.

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Press Drives And Press Lines (AREA)
  • Control Of Presses (AREA)
PCT/US2016/069365 2016-09-16 2016-12-30 Hydraulic clamping systems having load side-shifting variably responsive to load weight Ceased WO2018052468A1 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
AU2016423192A AU2016423192B2 (en) 2016-09-16 2016-12-30 Hydraulic clamping systems having load side-shifting variably responsive to load weight
CN201680088077.6A CN109562520B (zh) 2016-09-16 2016-12-30 具有可变负载重量响应的负载侧移的液压夹紧系统
FIEP16916390.4T FI3512670T3 (fi) 2016-09-16 2016-12-30 Hydrauliset puristusjärjestelmät varustettuna kuorman painon perusteella muuttuvalla kuorman sivuttaissiirtymällä
JP2019505217A JP6810244B2 (ja) 2016-09-16 2016-12-30 積荷のサイドシフトを積荷荷重に対して可変的に応答させる液圧クランプシステム
EP16916390.4A EP3512670B1 (en) 2016-09-16 2016-12-30 Hydraulic clamping systems having load side-shifting variably responsive to load weight
CA3028648A CA3028648C (en) 2016-09-16 2016-12-30 Hydraulic clamping systems having load side-shifting variably responsive to load weight
BR112019001939-1A BR112019001939B1 (pt) 2016-09-16 2016-12-30 Sistema de controle
ES16916390T ES3036014T3 (en) 2016-09-16 2016-12-30 Hydraulic clamping systems having load side-shifting variably responsive to load weight

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US15/267,694 2016-09-16
US15/267,694 US10494241B2 (en) 2016-09-16 2016-09-16 Hydraulic clamping systems having load side-shifting variably responsive to load weight

Publications (1)

Publication Number Publication Date
WO2018052468A1 true WO2018052468A1 (en) 2018-03-22

Family

ID=61617826

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2016/069365 Ceased WO2018052468A1 (en) 2016-09-16 2016-12-30 Hydraulic clamping systems having load side-shifting variably responsive to load weight

Country Status (10)

Country Link
US (1) US10494241B2 (enExample)
EP (1) EP3512670B1 (enExample)
JP (1) JP6810244B2 (enExample)
CN (1) CN109562520B (enExample)
AU (1) AU2016423192B2 (enExample)
BR (1) BR112019001939B1 (enExample)
CA (1) CA3028648C (enExample)
ES (1) ES3036014T3 (enExample)
FI (1) FI3512670T3 (enExample)
WO (1) WO2018052468A1 (enExample)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102044059B1 (ko) * 2016-08-02 2019-11-12 주식회사 두산 포크 이동의 제어 장치
CA3007257A1 (en) 2017-06-08 2018-12-08 Jody Addicott Fork-carriage apparatus for a lift truck and valve assembly therefor
DE102017115537A1 (de) * 2017-07-11 2019-01-17 Liebherr-Hydraulikbagger Gmbh Baumaschine
DE102019201599A1 (de) * 2019-02-07 2020-08-13 Bhs Intralogistics Gmbh Überführungsanordnung
US11655130B2 (en) 2019-05-22 2023-05-23 Cascade Corporation Synchronized hybrid clamp force controller for lift truck attachment
CA3186577A1 (en) * 2020-06-18 2021-12-23 Cascade Corporation Synchronized hybrid clamp force controller for lift truck attachment
US11142087B1 (en) 2021-05-10 2021-10-12 Mark Ellery Ogram Electric vehicle recharging
US12304790B1 (en) 2021-07-20 2025-05-20 Shaw Industries Group, Inc. Clamp adapter for lift vehicle to facilitate lifting of malleable objects
IT202300004011A1 (it) * 2023-03-06 2024-09-06 Bolzoni Spa Valvola rigenerativa perfezionata per il controllo dei movimenti di apertura e chiusura delle ganasce di una pinza, in particolare una pinza per carrelli elevatori, e pinza per carrelli elevatori comprendente tale valvola rigenerativa.

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3865424A (en) * 1972-04-06 1975-02-11 Voest Ag Hydraulically operable tongs for charging a workpiece to be forged
US4431365A (en) * 1977-07-13 1984-02-14 Clark Equipment Company Pressure control mechanism for a grapple skidder
US20020131852A1 (en) * 1998-10-07 2002-09-19 Jordan Dean Clark Adaptive load-clamping system
US20060073001A1 (en) * 2004-08-04 2006-04-06 Loron, Inc. Hydraulic force control system for clamping assembly
US20100089704A1 (en) 2008-10-09 2010-04-15 Cascade Corporation Equalized hydraulic clamp force control

Family Cites Families (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2663443A (en) 1951-04-18 1953-12-22 Baker Raulang Co Carrier for industrial elevating trucks
US2795346A (en) * 1953-07-16 1957-06-11 Hyster Co Load grip side shift for lift trucks
US3692198A (en) * 1970-12-28 1972-09-19 Clark Equipment Co Hydraulic lift truck with small number of fluid lines
US3971584A (en) * 1975-03-17 1976-07-27 Gte Sylvania Incorporated Automatic load compensating clamp truck jaws
US3990594A (en) * 1975-08-29 1976-11-09 Cascade Corporation Fluid-actuated clamping apparatus and circuit
US4335992A (en) * 1980-01-07 1982-06-22 Towmotor Corporation Side shift fork adjustable carriage
US4682931A (en) * 1986-09-22 1987-07-28 Cascade Corporation Lift truck clamp for handling stacked loads of different sizes
JPH075272B2 (ja) * 1987-07-27 1995-01-25 株式会社豊田自動織機製作所 サイドシフトクランプ装置
US5984617A (en) * 1998-05-11 1999-11-16 Cascade Corporation Clamp for handling stacked loads of different sizes at different maximum clamping forces
US6431816B1 (en) * 1998-10-07 2002-08-13 Cascade Corporation Adaptive load-clamping system
US6843636B2 (en) * 1998-10-07 2005-01-18 Cascade Corporation Adaptive load-clamping system
US7056078B2 (en) * 2003-09-24 2006-06-06 Cascade Corporation Hydraulically-synchronized clamp for handling stacked loads different sizes
ITMI20051256A1 (it) * 2005-07-04 2007-01-05 Auramo Oy Gruppo idraulico di controllo dei bracci di una pinza e pinza comprendente tale gruppo idraulico
CN100577554C (zh) * 2006-04-19 2010-01-06 浙江佳力科技股份有限公司 全液压电动叉车液压系统
CA2553994A1 (fr) * 2006-07-25 2008-01-25 Michel Lessard Calculateur de pression hydraulique entierement mecanique
US20080063503A1 (en) * 2006-09-11 2008-03-13 Joseph Lee Garrett Bale lifting device for the handling of bales of fibrous material
US8091467B2 (en) * 2008-04-30 2012-01-10 Cascade Corporation Hydraulic valve circuit with damage-control override
US20100300812A1 (en) * 2009-05-28 2010-12-02 Georgia-Pacifica Consumer Products LP Forklift Clamp
DE102010038663A1 (de) * 2010-07-29 2012-02-02 Griptech Gmbh Vorrichtung zur Aufnahme von Lasten
CN201841947U (zh) * 2010-10-31 2011-05-25 合肥搬易通科技发展有限公司 随车叉车液压系统
US20160243709A1 (en) * 2010-12-13 2016-08-25 Brian L. Ganz Robotic gripper
US8573070B2 (en) * 2011-02-22 2013-11-05 The Boeing Company Force and normality sensing for end effector clamp
CN102635581B (zh) * 2012-05-03 2014-07-16 泸州长江石油工程机械有限公司 用于超深径向井作业的液压控制系统
US8755929B2 (en) * 2012-10-29 2014-06-17 Cascade Corporation Interactive clamp force control system for load handling clamps
WO2014171953A1 (en) * 2013-04-19 2014-10-23 Cascade Corporation Clamping attachment with regenerative hydraulic circuit
US9579801B2 (en) * 2013-06-11 2017-02-28 Somatis Sensor Solutions LLC Systems and methods for sensing objects
CN203451178U (zh) * 2013-08-16 2014-02-26 安庆联动属具股份有限公司 一种叉车用吊笼式砖块夹
US9309099B2 (en) * 2014-06-20 2016-04-12 Cascade Corporation Side-shift limiter
US10011468B2 (en) * 2014-10-30 2018-07-03 Cascade Corporation Pivoting load-bearing assembly with force sensor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3865424A (en) * 1972-04-06 1975-02-11 Voest Ag Hydraulically operable tongs for charging a workpiece to be forged
US4431365A (en) * 1977-07-13 1984-02-14 Clark Equipment Company Pressure control mechanism for a grapple skidder
US20020131852A1 (en) * 1998-10-07 2002-09-19 Jordan Dean Clark Adaptive load-clamping system
US20060073001A1 (en) * 2004-08-04 2006-04-06 Loron, Inc. Hydraulic force control system for clamping assembly
US20100089704A1 (en) 2008-10-09 2010-04-15 Cascade Corporation Equalized hydraulic clamp force control

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3512670A4

Also Published As

Publication number Publication date
US10494241B2 (en) 2019-12-03
BR112019001939A2 (pt) 2019-05-07
ES3036014T3 (en) 2025-09-11
AU2016423192B2 (en) 2022-09-08
JP6810244B2 (ja) 2021-01-06
CN109562520B (zh) 2021-10-29
EP3512670A1 (en) 2019-07-24
EP3512670B1 (en) 2025-06-11
FI3512670T3 (fi) 2025-09-11
BR112019001939B1 (pt) 2022-02-01
AU2016423192A1 (en) 2019-01-17
CA3028648A1 (en) 2018-03-22
CN109562520A (zh) 2019-04-02
JP2019534831A (ja) 2019-12-05
US20180079634A1 (en) 2018-03-22
EP3512670A4 (en) 2020-05-13
CA3028648C (en) 2021-07-06

Similar Documents

Publication Publication Date Title
EP3512670B1 (en) Hydraulic clamping systems having load side-shifting variably responsive to load weight
USRE50500E1 (en) Equalized hydraulic clamp force control
US8979154B2 (en) Clamping attachment with regenerative hydraulic circuit
EP0261873B1 (en) Lift truck load clamp for handling stacked loads of different sizes
EP0959039B1 (en) Clamp for handling stacked loads of different sizes at different maximum clamping forces
CN108025440B (zh) 具有带有多个可伸缩延伸级段的负载夹持液压缸的夹具
US7222484B1 (en) Hydraulic system with multiple pressure relief levels
EP1663842B1 (en) Hydraulically-synchronized clamp for handling stacked loads of different sizes

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16916390

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 3028648

Country of ref document: CA

ENP Entry into the national phase

Ref document number: 2016423192

Country of ref document: AU

Date of ref document: 20161230

Kind code of ref document: A

ENP Entry into the national phase

Ref document number: 2019505217

Country of ref document: JP

Kind code of ref document: A

REG Reference to national code

Ref country code: BR

Ref legal event code: B01A

Ref document number: 112019001939

Country of ref document: BR

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2016916390

Country of ref document: EP

Effective date: 20190416

ENP Entry into the national phase

Ref document number: 112019001939

Country of ref document: BR

Kind code of ref document: A2

Effective date: 20190130

WWG Wipo information: grant in national office

Ref document number: 2016916390

Country of ref document: EP