GB753209A - Improvements in or relating to mechanical shovels - Google Patents
Improvements in or relating to mechanical shovelsInfo
- Publication number
- GB753209A GB753209A GB37749/54A GB3774954A GB753209A GB 753209 A GB753209 A GB 753209A GB 37749/54 A GB37749/54 A GB 37749/54A GB 3774954 A GB3774954 A GB 3774954A GB 753209 A GB753209 A GB 753209A
- Authority
- GB
- United Kingdom
- Prior art keywords
- jacks
- turret
- valve means
- ahlmann
- pressure differential
- 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Jib Cranes (AREA)
Abstract
753,209. Shovelling machines. AHLMANN, K., and AHLMANN, J. S. [trading as AHLMANN-CARLSHUTTE KOMM.- GES.]. Dec. 31, 1954 [Jan. 12, 1954], No. 37749/54. Class 68(1) [Also in Group XXIX] In a shovelling machine in which a scoopcarrying jib 9 and the jacks for actuating the jib and the scoop 11 are mounted on a turret 6 rotatably supported on a vehicle chassis 1, the turret 6 is rotated by a pair of single-acting, hydraulically actuated jacks 23, 24 one only of which is operated at a time, said jacks being interconnected through spring-loaded relief valve means 46. On the interruption of the flow of liquid to and from the cylinders the inertia of the moving turret and the structure supported thereon would, if no valve means 46 were provided between the jacks, result in the creation 'of an excessive pressure differential in the jacks as the rotation of the turret is halted, but because of the valve means 46 the pressure differential is greatly reduced. The valve of the pressure differential is dependant upon the tension of spring-loading means 53 of the two non. return valves 51 of the valve means 46. Each piston rod 29, 30 of the jacks 23, 24 is connected by a chain 39, 34 to the turret 9. Specification 753.008 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE753209X | 1954-01-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB753209A true GB753209A (en) | 1956-07-18 |
Family
ID=6656455
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB37749/54A Expired GB753209A (en) | 1954-01-12 | 1954-12-31 | Improvements in or relating to mechanical shovels |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR1116360A (en) |
GB (1) | GB753209A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2139594A (en) * | 1983-05-11 | 1984-11-14 | Simo Lahikainen | Boom swinging means |
US4768917A (en) * | 1986-10-23 | 1988-09-06 | Vme Americas Inc. | Loader boom mechanism |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3236401A (en) * | 1964-06-25 | 1966-02-22 | Wagner Mfg Inc | Side dump loader |
US3289855A (en) * | 1965-01-06 | 1966-12-06 | Ohio Brass Co | Derrick |
-
1954
- 1954-12-22 FR FR1116360D patent/FR1116360A/en not_active Expired
- 1954-12-31 GB GB37749/54A patent/GB753209A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2139594A (en) * | 1983-05-11 | 1984-11-14 | Simo Lahikainen | Boom swinging means |
US4768917A (en) * | 1986-10-23 | 1988-09-06 | Vme Americas Inc. | Loader boom mechanism |
Also Published As
Publication number | Publication date |
---|---|
FR1116360A (en) | 1956-05-07 |
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