GB1365511A - Energy recovery systems - Google Patents

Energy recovery systems

Info

Publication number
GB1365511A
GB1365511A GB443871A GB443871A GB1365511A GB 1365511 A GB1365511 A GB 1365511A GB 443871 A GB443871 A GB 443871A GB 443871 A GB443871 A GB 443871A GB 1365511 A GB1365511 A GB 1365511A
Authority
GB
United Kingdom
Prior art keywords
pump
jack
motor
battery
fluid
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.)
Expired
Application number
GB443871A
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.)
Conveyancer Ltd
Original Assignee
Conveyancer Ltd
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 Conveyancer Ltd filed Critical Conveyancer Ltd
Priority to GB443871A priority Critical patent/GB1365511A/en
Publication of GB1365511A publication Critical patent/GB1365511A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/14—Energy-recuperation means
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
    • H02J7/1415—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle with a generator driven by a prime mover other than the motor of a vehicle

Abstract

1365511 Lift tracks CONVEYANCER Ltd 4 May 1972 [11 Feb 1971] 4438/71 Heading B8H [Also in Division H2] A system for returning energy to the battery (not shown) of, for example, an industrial lift truck, comprises an electric motor 1 supplied by the battery and adapted to drive an hydraulic pump 8, and control valves 15, 20 which direct hydraulic fluid from the pump to a jack 16 of the truck or allow fluid to return from the jack to the pump to drive it and the motor so that the motor restores energy to the battery. In order to raise the jack, a lever associated with the valve 15 is moved to close contacts 2 and set the swash plate angle of the pump by means of an actuator 21. The motor 1 therefore drives the pump 8 which supplies fluid from a reservoir 9 via valves 10, 15, 14, 18 to the jack. To lower the jack, the lever is moved to open a diverter valve 20 and to set the valve 15 so that as the potential energy of the jack drives the pump the fluid is returned via conduits 13, 19 to the reservoir. The lever also causes opening of the contacts 2 and changes over a switch 6 connected between series and shunt field coils 3 and 5 respectively. The pump therefore drives the armature 4 of the motor 1 as a generator and supplies charging current to the battery via a diode or thyristor 7.
GB443871A 1972-05-04 1972-05-04 Energy recovery systems Expired GB1365511A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB443871A GB1365511A (en) 1972-05-04 1972-05-04 Energy recovery systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB443871A GB1365511A (en) 1972-05-04 1972-05-04 Energy recovery systems

Publications (1)

Publication Number Publication Date
GB1365511A true GB1365511A (en) 1974-09-04

Family

ID=9777187

Family Applications (1)

Application Number Title Priority Date Filing Date
GB443871A Expired GB1365511A (en) 1972-05-04 1972-05-04 Energy recovery systems

Country Status (1)

Country Link
GB (1) GB1365511A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993004519A1 (en) * 1991-08-12 1993-03-04 Knorr-Bremse Ag Accummulator-charging device
WO2000015457A1 (en) * 1998-09-10 2000-03-23 Elfstroem Svein Driving means
EP1067296A1 (en) 1999-07-06 2001-01-10 HEILMEIER & WEINLEIN Fabrik für Oel-Hydraulik GmbH & Co. KG Electrohydraulic lifting module
EP3610837A1 (en) * 2018-08-16 2020-02-19 Autolift S.r.l. Wheelchair lift with low energy consumption

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993004519A1 (en) * 1991-08-12 1993-03-04 Knorr-Bremse Ag Accummulator-charging device
WO2000015457A1 (en) * 1998-09-10 2000-03-23 Elfstroem Svein Driving means
EP1067296A1 (en) 1999-07-06 2001-01-10 HEILMEIER & WEINLEIN Fabrik für Oel-Hydraulik GmbH & Co. KG Electrohydraulic lifting module
EP3610837A1 (en) * 2018-08-16 2020-02-19 Autolift S.r.l. Wheelchair lift with low energy consumption
US11648160B2 (en) 2018-08-16 2023-05-16 Autolift S.R.L. Wheelchair lift with low energy consumption

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee