GB754202A - Improvements in or relating to mechanical shovels - Google Patents
Improvements in or relating to mechanical shovelsInfo
- Publication number
- GB754202A GB754202A GB37745/54A GB3774554A GB754202A GB 754202 A GB754202 A GB 754202A GB 37745/54 A GB37745/54 A GB 37745/54A GB 3774554 A GB3774554 A GB 3774554A GB 754202 A GB754202 A GB 754202A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- supply
- arm
- liquid
- jack
- 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
- E02F3/42—Drives for dippers, buckets, dipper-arms or bucket-arms
- E02F3/422—Drive systems for bucket-arms, front-end loaders, dumpers or the like
-
- 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
- E02F3/283—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 with a single arm pivoted directly on the chassis
-
- 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
- E02F3/30—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 with a dipper-arm pivoted on a cantilever beam, i.e. boom
-
- 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
- E02F3/30—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 with a dipper-arm pivoted on a cantilever beam, i.e. boom
- E02F3/308—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 with a dipper-arm pivoted on a cantilever beam, i.e. boom working outwardly
Abstract
754,202. Shovelling machines. AHLMANN, K., and AHLMANN, J. S. [trading as AHLMANN-CARLSHUTTE KOMM.- GES.]. Dec. 31, 1954 [Jan. 14, 19541. No. 37745/54. Class 68(1) [Also in Group XXIX] In a shovelling machine the control means 38 of the hydraulic circuits to the various hydraulically-actuated jacks 12, 15, 23, 24, that regulate movement of a scoop, comprises a pressure relief valve 54, a valve 40 for controlling the jacks 23, 24 that rotate a turret 6 supporting an arm 9, carrying the scoop, a valve 41 for controlling the jack 15 that tilts the scoop relative to the arm 9, and a valve 42 for controlling the jack 12 that raises the arm 9. The interconnected inlet and outlet passages 53 and 51, 52 in the associated casings of the valves are so arranged that upon actuation of the valve 41 the supply of liquid under pressure to the valve 42 is interrupted. Valve 42 can be locked in an open position to permit the supply of liquid to the jack 12 to raise the arm 9, but this supply is stopped on actuation of valve 41 to supply liquid to the jack 15 to tilt the scoop relative to the arm 9. The valve 40 can be provided with tapered portions 73, 74 that, on actuation of the valve to control the jacks 23, 24, regulate the supply of liquid to the valves 41, 42, or a passage 72 may be provided in the casing of valve 40 so that the supply of liquid to valves 41, 42 is independent of the actuation of valve 40.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE754202X | 1954-01-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB754202A true GB754202A (en) | 1956-08-01 |
Family
ID=6659302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB37745/54A Expired GB754202A (en) | 1954-01-14 | 1954-12-31 | Improvements in or relating to mechanical shovels |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE534708A (en) |
| FR (1) | FR1116359A (en) |
| GB (1) | GB754202A (en) |
-
0
- BE BE534708D patent/BE534708A/xx unknown
-
1954
- 1954-12-22 FR FR1116359D patent/FR1116359A/en not_active Expired
- 1954-12-31 GB GB37745/54A patent/GB754202A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE534708A (en) | |
| FR1116359A (en) | 1956-05-07 |
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