GB1377726A - Arrangement for braking in the end position of a forwards-and- backwards movable body - Google Patents
Arrangement for braking in the end position of a forwards-and- backwards movable bodyInfo
- Publication number
- GB1377726A GB1377726A GB2500573A GB2500573A GB1377726A GB 1377726 A GB1377726 A GB 1377726A GB 2500573 A GB2500573 A GB 2500573A GB 2500573 A GB2500573 A GB 2500573A GB 1377726 A GB1377726 A GB 1377726A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lines
- fluid
- stroke
- piston
- forwards
- 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
Links
Classifications
-
- 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
- E02F9/2203—Arrangements for controlling the attitude of actuators, e.g. speed, floating function
- E02F9/2207—Arrangements for controlling the attitude of actuators, e.g. speed, floating function for reducing or compensating oscillations
-
- 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
- E02F3/38—Cantilever beams, i.e. booms;, e.g. manufacturing processes, forms, geometry or materials used for booms; Dipper-arms, e.g. manufacturing processes, forms, geometry or materials used for dipper-arms; Bucket-arms
- E02F3/382—Connections to the frame; Supports for booms or arms
- E02F3/384—Connections to the frame; Supports for booms or arms the boom being pivotable relative to the frame about a vertical axis
-
- 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
- F15B11/20—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors controlling several interacting or sequentially-operating 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
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Operation Control Of Excavators (AREA)
- Actuator (AREA)
- Braking Arrangements (AREA)
Abstract
1377726 Damping hydraulic actuators VOLVO BM AB 24 May 1973 [31 May 1972] 25005/73 Heading F1P A pair of double acting rams 1a, 1b, which swing a member 9 about an axis 7 and are supplied with fluid through lines 15a, 15b, have conventional means 11a, 11b for damping the end of the stroke of pistons 3a, 3b which are each connected to the opposite end of the other cylinder by lines 23a, 23b so that both ends of the stroke of each piston is damped. Check valves 27a, 27b ensure that fluid passing through lines 23a, 23b is returned through chambers 17a, 17b and lines 13a, 13b. When the piston 3a moves downwards, fluid is pushed from the chamber 21a through line 23a and into the chamber 17b, so that when the piston 3b approaches the end of its stroke both pistons are damped because exhaust fluid from both cylinders passes through the damping means 11b.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE712972A SE363368B (en) | 1972-05-31 | 1972-05-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1377726A true GB1377726A (en) | 1974-12-18 |
Family
ID=20270490
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2500573A Expired GB1377726A (en) | 1972-05-31 | 1973-05-24 | Arrangement for braking in the end position of a forwards-and- backwards movable body |
Country Status (4)
Country | Link |
---|---|
DE (1) | DE2326382C3 (en) |
FR (1) | FR2186578B1 (en) |
GB (1) | GB1377726A (en) |
SE (1) | SE363368B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0009974A1 (en) * | 1978-10-04 | 1980-04-16 | Ford Motor Company Limited | Swing post hydraulic circuit |
EP3156307A1 (en) * | 2015-10-13 | 2017-04-19 | Deere & Company | Work vehicles with cylinder cushioning arrangement |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU502182B2 (en) * | 1975-03-17 | 1979-07-19 | Massey-Ferguson Inc | Hydraulic swing mechanism |
FR2395412A1 (en) * | 1977-06-23 | 1979-01-19 | Poclain Sa | AUTOMATIC ROTATION STOP DEVICE OF A HYDRAULIC MOTOR |
-
1972
- 1972-05-31 SE SE712972A patent/SE363368B/xx unknown
-
1973
- 1973-05-24 GB GB2500573A patent/GB1377726A/en not_active Expired
- 1973-05-24 DE DE19732326382 patent/DE2326382C3/en not_active Expired
- 1973-05-30 FR FR7319859A patent/FR2186578B1/fr not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0009974A1 (en) * | 1978-10-04 | 1980-04-16 | Ford Motor Company Limited | Swing post hydraulic circuit |
EP3156307A1 (en) * | 2015-10-13 | 2017-04-19 | Deere & Company | Work vehicles with cylinder cushioning arrangement |
Also Published As
Publication number | Publication date |
---|---|
FR2186578B1 (en) | 1976-04-23 |
FR2186578A1 (en) | 1974-01-11 |
SE363368B (en) | 1974-01-14 |
DE2326382B2 (en) | 1978-02-23 |
DE2326382C3 (en) | 1978-10-26 |
DE2326382A1 (en) | 1973-12-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed |