EP0256304B1 - Maschine für Erdarbeiten - Google Patents
Maschine für Erdarbeiten Download PDFInfo
- Publication number
- EP0256304B1 EP0256304B1 EP87110040A EP87110040A EP0256304B1 EP 0256304 B1 EP0256304 B1 EP 0256304B1 EP 87110040 A EP87110040 A EP 87110040A EP 87110040 A EP87110040 A EP 87110040A EP 0256304 B1 EP0256304 B1 EP 0256304B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- jaw
- articulated
- fact
- interdependant
- frame
- 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 - Lifetime
Links
- 238000007790 scraping Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000000470 constituent Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C3/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith and intended primarily for transmitting lifting forces to loose materials; Grabs
- B66C3/14—Grabs opened or closed by driving motors thereon
- B66C3/16—Grabs opened or closed by driving motors thereon by fluid motors
-
- 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
- E02F3/40—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets
- E02F3/413—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with grabbing device
Definitions
- a spring or hydraulic cylinder device 17 is provided between the pivot axis 7 and the sets of links II, 13 secured to the secondary arms 8, this device being mounted so that it resists elastically the opening of the jaw 3 by pivoting on the joints “a” and “b” and thus tends to maintain the rounded portion 18 of said jaw 3 against the tube 5 secured to the main arms 4 (see FIGS. 1 and 2), especially when opening the jaws 3.
- FIG 5 it illustrates another gripping position in which the two jaws, enclosing between them a block of stone 19 for example, are not positioned symmetrically with respect to the frame I.
- the two jaws 3 can therefore work with a certain independence from each other, in particular according to the shape and the positioning of the block 19.
- the angle between the two links II and 13 is more open in the case of the right jaw than in the one on the left.
- pivot point which was located approximately I / 8 from the lower end of the jaws 3 in the closed position ( Figure I), is moved upward (0 ') in the case of the jaw of straight line where the angle a'of the link 13 has become negative relative to the plane parallel to the chassis passing through the hinge axis 12; the pivot point 0 "of the left jaw is moved downwards, near the lower end, the angle ⁇ " of the link 13 being greater than the angle a of the closed position ( Figure I ).
- FIG. 6, in which the same constituent elements are designated by the same reference numbers as those of the embodiment of FIGS. 5, is distinguished from this by the presence of a hydraulic cylinder 20, mounted integral with the hinge pin 9 and rigidly connected to the transverse tube 5 by a bent rod 21 and a double triangular intermediate element 22. More particularly, the end of the rod 20 'of the cylinder 20 is articulated on one of the vertices of the element 22, a second vertex 23 being welded to the transverse tube 5, while the bent rod 21 is fixed on one side to the third vertex 24 of the triangular element 22 and on the other removably, for example by means of a key, on a lug 25 also welded to the transverse tube 5.
- the role of the hydraulic cylinder 20 is the same as that of the spring device 17 represented in the figures to 5. If the hydraulic cylinder 20 is a double-acting cylinder, then this cylinder can control either the opening and the closing of the upper part 18 of the jaws 3.
- connecting rod 16 of the embodiment of the figures to 5 is replaced by two half-rods 16 'connected to each other by a connecting rod 16 "pivoted in its center.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Shovels (AREA)
- Soil Working Implements (AREA)
- Earth Drilling (AREA)
- Handcart (AREA)
- Separation By Low-Temperature Treatments (AREA)
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT87110040T ATE50748T1 (de) | 1986-07-18 | 1987-07-11 | Maschine fuer erdarbeiten. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH2893/86 | 1986-07-18 | ||
| CH2893/86A CH669002A5 (fr) | 1986-07-18 | 1986-07-18 | Engin de terrassement. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0256304A1 EP0256304A1 (de) | 1988-02-24 |
| EP0256304B1 true EP0256304B1 (de) | 1990-03-07 |
Family
ID=4243966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP87110040A Expired - Lifetime EP0256304B1 (de) | 1986-07-18 | 1987-07-11 | Maschine für Erdarbeiten |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0256304B1 (de) |
| AT (1) | ATE50748T1 (de) |
| CH (1) | CH669002A5 (de) |
| DE (2) | DE256304T1 (de) |
| ES (1) | ES2001466B3 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257610A (zh) * | 2015-07-13 | 2016-01-20 | 南通港闸船舶制造有限公司 | 易操作的自航钢耙抓斗挖泥船液压系统 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2194193A1 (de) * | 2008-12-05 | 2010-06-09 | Serge Vuistiner | Baggergreifer |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR919101A (fr) * | 1945-12-18 | 1947-02-27 | Benne-preneuse | |
| DE1114623B (de) * | 1957-01-14 | 1961-10-05 | Wilhelm Ludowici Dr Ing | Greifer |
| DE1123097B (de) * | 1959-11-21 | 1962-02-01 | Taylor & Sons Manchester Ltd F | Kuebelgreifer mit hydraulischem Antrieb zum Verschwenken der beiden Kuebelhaelften |
| US3667796A (en) * | 1970-10-30 | 1972-06-06 | Deere & Co | Logging grapple |
| FR2300034A1 (fr) * | 1975-02-10 | 1976-09-03 | Yumbo | Benne preneuse a commande hydraulique |
| US4023848A (en) * | 1976-01-05 | 1977-05-17 | J. I. Case Company | Log grapple |
| CA1036047A (en) * | 1976-04-27 | 1978-08-08 | Logging Development Corporation | Apparatus for accumulating trees during harvesting of the same |
| NL7700847A (nl) * | 1977-01-27 | 1978-07-31 | Nemag Nv | Grijper of dergelijke. |
| CH641864A5 (fr) * | 1980-12-02 | 1984-03-15 | Serge Vuistiner | Engin de terrassement. |
-
1986
- 1986-07-18 CH CH2893/86A patent/CH669002A5/fr not_active IP Right Cessation
-
1987
- 1987-07-11 EP EP87110040A patent/EP0256304B1/de not_active Expired - Lifetime
- 1987-07-11 DE DE198787110040T patent/DE256304T1/de active Pending
- 1987-07-11 DE DE8787110040T patent/DE3761816D1/de not_active Expired - Lifetime
- 1987-07-11 AT AT87110040T patent/ATE50748T1/de not_active IP Right Cessation
- 1987-07-11 ES ES87110040T patent/ES2001466B3/es not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257610A (zh) * | 2015-07-13 | 2016-01-20 | 南通港闸船舶制造有限公司 | 易操作的自航钢耙抓斗挖泥船液压系统 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0256304A1 (de) | 1988-02-24 |
| ES2001466B3 (es) | 1990-05-16 |
| ATE50748T1 (de) | 1990-03-15 |
| DE3761816D1 (de) | 1990-04-12 |
| ES2001466A4 (es) | 1988-06-01 |
| DE256304T1 (de) | 1988-06-30 |
| CH669002A5 (fr) | 1989-02-15 |
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|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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| TCNL | Nl: translation of patent claims filed | ||
| GBC | Gb: translation of claims filed (gb section 78(7)/1977) | ||
| TCAT | At: translation of patent claims filed | ||
| 17P | Request for examination filed |
Effective date: 19880321 |
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