GB1297520A – – Google Patents
GB1297520A – – Google Patents
Info
Publication number
GB1297520A
GB1297520A
GB1297520DA
GB1297520A
GB 1297520 A
GB1297520 A
GB 1297520A
GB 1297520D A
GB1297520D A
GB 1297520DA
GB 1297520 A
GB1297520 A
GB 1297520A
Authority
GB
United Kingdom
Prior art keywords
valve
line
operated
flow
pump
Prior art date
1969-11-20
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
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.)
1969-11-20
Filing date
1969-11-20
Publication date
1972-11-22
1969-11-20
Application filed
filed
Critical
1972-11-22
Publication of GB1297520A
publication
Critical
patent/GB1297520A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
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
B—PERFORMING OPERATIONS; TRANSPORTING
B66—HOISTING; LIFTING; HAULING
B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
B66C13/00—Other constructional features or details
B66C13/18—Control systems or devices
B—PERFORMING OPERATIONS; TRANSPORTING
B66—HOISTING; LIFTING; HAULING
B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
B66C2700/00—Cranes
B66C2700/06—Cranes in which the lifting movement is done with a hydraulically controlled plunger
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
F15B2211/2053—Type of pump
F15B2211/20546—Type of pump variable capacity
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
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
F15B2211/3111—Neutral or centre positions the pump port being closed in the centre position, e.g. so-called closed 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
F15B2211/30—Directional control
F15B2211/31—Directional control characterised by the positions of the valve element
F15B2211/3122—Special positions other than the pump port being connected to working ports or the working ports being connected to the return line
F15B2211/3127—Floating position connecting the working ports and the return line
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
F15B2211/32—Directional control characterised by the type of actuation
F15B2211/327—Directional control characterised by the type of actuation electrically or electronically
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
F15B2211/4053—Flow control characterised by the type of flow control means or valve with flow dividers using 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
F15B2211/505—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
F15B2211/515—Pressure control characterised by the connections of the pressure control means in the circuit
F15B2211/5156—Pressure control characterised by the connections of the pressure control means in the circuit being connected to a return line and a directional control valve
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
F15B2211/515—Pressure control characterised by the connections of the pressure control means in the circuit
F15B2211/5159—Pressure control characterised by the connections of the pressure control means in the circuit being connected to an output member and a return line
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
F15B2211/55—Pressure control for limiting a pressure up to a maximum pressure, e.g. by using a pressure relief valve
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
F15B2211/555—Pressure control for assuring a minimum pressure, e.g. by using a back pressure valve
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
F15B2211/7051—Linear output members
F15B2211/7053—Double-acting 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
F15B2211/78—Control of multiple output members
F15B2211/781—Control of multiple output members one or more output members having priority
Abstract
1297520 Hydraulic motor control circuits P G LEESON 20 Nov 1970 [20 Nov 1969] 56751/69 Heading F1P An hydraulic control apparatus for the long travel, cross travel and lifting motions of a crane or hoist comprises a driven pump 2, drawing fluid from a reservoir 1, a two-way solenoid actuated valve 1A and a flow splitting device 5 supplied through the valve 1A, a fluid line 24 from the flow splitting device 5 to operate motors 17 controlling the lifting motion when a valve 8 is operated and a fluid line 23 from flow splitting device 5 to motors 15, 16 controlling long travel and cross travel motions respectively when valves 6, 11 and 12 are operated. A hook service is operated by a ram 1D when flow from the pump 2 is diverted by means of valve 1A and passes through conduits 22, 41 via a solenoid operated valve 1B. A variable speed control device is connected to the pump 3 in order to increase the output flow. Exhaust lines from all the motion circuits converge into one line 29 connected through a check valve 18 and filter 19 to the reservoir 1. The pressure in line 24 may be boosted by operation of valve 6 so that fluid line 23 is connected to a line 28 which joins line 24, a non-return valve 7 being incorporated in line 28.
GB1297520D
1969-11-20
1969-11-20
Expired
GB1297520A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
GB5675169
1969-11-20
Publications (1)
Publication Number
Publication Date
GB1297520A
true
GB1297520A
(en)
1972-11-22
Family
ID=10477446
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB1297520D
Expired
GB1297520A
(en)
1969-11-20
1969-11-20
Country Status (2)
Country
Link
DE
(1)
DE2057129A1
(en)
GB
(1)
GB1297520A
(en)
Cited By (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
CN102748333A
(en)
*
2012-07-06
2012-10-24
上海中联重科桩工机械有限公司
Hydraulic motor control system and full-hydraulic walking-type pile driving frame
CN104373404A
(en)
*
2014-11-24
2015-02-25
徐州重型机械有限公司
Control system and method for composite actions and crane
1969
1969-11-20
GB
GB1297520D
patent/GB1297520A/en
not_active
Expired
1970
1970-11-20
DE
DE19702057129
patent/DE2057129A1/en
active
Pending
Cited By (3)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
CN102748333A
(en)
*
2012-07-06
2012-10-24
上海中联重科桩工机械有限公司
Hydraulic motor control system and full-hydraulic walking-type pile driving frame
CN102748333B
(en)
*
2012-07-06
2015-04-29
上海中联重科桩工机械有限公司
Hydraulic motor control system and full-hydraulic walking-type pile driving frame
CN104373404A
(en)
*
2014-11-24
2015-02-25
徐州重型机械有限公司
Control system and method for composite actions and crane
Also Published As
Publication number
Publication date
DE2057129A1
(en)
1971-05-27
Similar Documents
Publication
Publication Date
Title
GB1325201A
(en)
1973-08-01
Hydraulic motor control apparatus
GB1415767A
(en)
1975-11-26
Hydraulic transmissions for driving machines provided with holding brakes
GB1389614A
(en)
1975-04-03
Well stimulation apparatus and method
GB1233620A
(en)
1971-05-26
GB1370736A
(en)
1974-10-16
Winch apparatus
GB1443650A
(en)
1976-07-21
Device for controlling hydraulic fluid
GB1339656A
(en)
1973-12-05
Control circuit and lock valve for pivot axle lockout rams
GB1335386A
(en)
1973-10-24
Systems for operating and controlling hydraulically driven winches hoists and the like
GB1459533A
(en)
1976-12-22
Pressurised fluid supply apparatus
GB912003A
(en)
1962-12-05
Hydraulic mechanism
GB1439624A
(en)
1976-06-16
Hoisting winch in particular for a boring machine
GB1297520A
(en)
1972-11-22
GB1485686A
(en)
1977-09-14
Hydraulic system for a pipelayer
GB1537430A
(en)
1978-12-29
Actuating drive means
GB1335835A
(en)
1973-10-31
Apparatus for raising and lowering aircraft arrest devices
US2254708A
(en)
1941-09-02
Power transmission
GB1026680A
(en)
1966-04-20
Tensioned modified suspended trolley system for transferring loads between stations
ES345876A2
(en)
1970-02-01
Power steering apparatus,especially for motor vehicles
GB1340190A
(en)
1973-12-12
Stage scenery moving apparatus
DE3684402D1
(en)
1992-04-23
HYDRAULIC CONTROL DEVICE.
GB962652A
(en)
1964-07-01
Improvements relating to hydraulic load-moving apparatus
GB753866A
(en)
1956-08-01
Improvements in auxiliary hydraulic gear mechanism as incorporated in mining machines
GB1354929A
(en)
1974-06-05
Drive devices
GB1240585A
(en)
1971-07-28
Suction dredger
GB1314389A
(en)
1973-04-18
Pilot operated control valve
Legal Events
Date
Code
Title
Description
1973-04-04
PS
Patent sealed
1977-06-22
PLNP
Patent lapsed through nonpayment of renewal fees
