EP0810330B1 - Dispositif pour fixer un outil à l'extrémité du bras d'une pelle mécanique - Google Patents
Dispositif pour fixer un outil à l'extrémité du bras d'une pelle mécanique Download PDFInfo
- Publication number
- EP0810330B1 EP0810330B1 EP97400869A EP97400869A EP0810330B1 EP 0810330 B1 EP0810330 B1 EP 0810330B1 EP 97400869 A EP97400869 A EP 97400869A EP 97400869 A EP97400869 A EP 97400869A EP 0810330 B1 EP0810330 B1 EP 0810330B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tool
- stop
- axis
- arm
- shaft
- 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
Images
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
- E02F3/3604—Devices to connect tools to arms, booms or the like
- E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
- E02F3/364—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat using wedges
Definitions
- the present invention relates to improvements to devices for attaching a tool to the end of the arm of a shovel mechanical or the like.
- a quick coupler has two parts, a first part, or hooking member, which is worn by the end of the arm and a second part which is rendered secured to the tool.
- the second part consists mainly of a tree, or by two pins, fixed relative to the tool.
- the first part which is articulated at the end of the arm, presents, in its form the simpler, a hook forming a semi-cylindrical cradle likely to be engaged on the tool shaft when the latter rests on the ground.
- Such a device is illustrated by that described in EP-A-438931.
- a device comprising, in its simplest form, a stop provided on the hooking member capable of cooperating, when the tool is locked, with a stop carried by the tool so as to object to the tool shaft tending to come out of its cradle.
- Each of the two abovementioned stops has a surface of contact formed by a portion of the surface of a straight cylinder with circular director whose axis coincides with that of the tree of the tool, the two surfaces being respectively convex and concave.
- the radius of the convex surface, corresponding to the stop carried by the tree is equal to that of the concave surface.
- the present invention which overcomes these drawbacks, is remarkable in that when the two stops cooperate in locking position, the axis of the fictitious cylinder on which the two contact surfaces of said stops are located is arranged in front of the shaft axis capable of being carried by the tool relative to the direction of rotation of the latching member when the latter pivots from the non-position locked in the locked position.
- the fixed stop that carried by the tree, is made in two parts assemblies, one of which has the contact surface, a shim inserted between the two said parts allowing the adjustment of the position of said contact surface.
- 1 is the end of the usual arm of a charger on which a tool such as a bucket should be attached.
- the representation of the bucket has been limited to the beam or shaft 2 carried by the bucket and constituting the edge of the opposite bucket teeth.
- the fastening member 3 is produced at by means of two identical hooks 4, joined by at least one crosspiece 5.
- Each hook has a semi-cylindrical cradle 6 receiving the shaft 2 of the tool.
- the attachment member 3 is articulated at the end of the arm 1 through an axis 7 and can pivot around said axis by through links 8 and 9 subjected to the action of a jack, the piston rod is shown at 10 in Figure 1.
- the shaft 2 has, at least, a stop 11 likely to cooperate, when the tool is locked (fig. 2), with a stop 12.
- the fixed stop 11 has a convex contact surface 14, located on a fictitious right cylinder C whose generatrices are parallel to axis 13.
- the stop 12 has a concave contact surface 15, located on a fictitious right cylinder C whose generatrices are parallel to axis 13.
- the two aforementioned cylinders have the same diameter and, when the member 3 is in the locked position (fig. 2 and 5), the axes of the two fictitious cylinders coincide. There is no play between the surfaces 14 and 15 and that's the ideal situation.
- the axis Ci of the cylinder comprising the surface 14 is offset relative to the axis 13 in the direction of rotation of the member 3 to move from the position of Figure 1 to that of the figure 2.
- the stop 11 is made in two parts 11a and 11b assembled with a wedge interposed 16. The assembly is carried out using countersunk screws whose axes are shown schematically in 17.
- This last device makes it possible to adapt the tool to the organ of attachment and to correct, in a final way, a defect of tool construction.
- the thickness of the shim 16 is increased and conversely otherwise.
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)
- Earth Drilling (AREA)
- Load-Engaging Elements For Cranes (AREA)
Description
- la figure 1 est une vue partielle, en élévation, montrant l'accrochage d'un outil à l'extrémité du bras d'un chargeur à l'aide d'une attache rapide comportant le dispositif de l'invention, la représentation de l'outil étant limitée à son arbre usuel;
- la figure 2 est une vue, analogue à celle 1, montrant l'ensemble en position verrouillée;
- les figures 3 à 5 sont des vues, partielles et à plus grande échelle, montrant les différentes positions de la butée mobile durant l'opération de verrouillage;
- la figure 6 est une vue, partielle et à plus grande échelle, limitée à la butée fixe et montrant une autre caractéristique de l'invention.
Claims (2)
- Dispositif pour fixer un outil à l'extrémité du bras (1) d'une pelle mécanique, le dispositif comportant une attache rapide comportant un organe d'accrochage (3) susceptible d'être porté par ledit bras (1), et un arbre (2), pourvu d'une butée (11), susceptible d'être portée par l'outil, ledit organe (3) présentant une butée (12) susceptible de coopérer, en position verrouillée, avec ladite butée (11) de l'arbre (2), caractérisé en ce que l'axe (1) du cylindre fictif (c) sur lequel sont situées les surfaces de contact (14-15) des butées est situé en avant de l'axe (13) de l'arbre (2) susceptible d'être portée par l'outil par rapport au sens de rotation de l'organe d'accrochage lorsque celui-ci pivote de la position non verrouillée à la position verrouillée.
- Dispositif selon la revendication 1, caractérisé en ce que la butée (11) susceptible d'être portée par l'outil est réalisée en deux parties dont l'une comporte la surface de contact (14), une cale ajustable (16) étant interposée entre lesdites parties.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9606641A FR2749332B1 (fr) | 1996-05-30 | 1996-05-30 | Dispositif pour fixer un outil a l'extremite du bras d'une pelle mecanique |
| FR9606641 | 1996-05-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0810330A1 EP0810330A1 (fr) | 1997-12-03 |
| EP0810330B1 true EP0810330B1 (fr) | 2002-10-09 |
Family
ID=9492539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97400869A Expired - Lifetime EP0810330B1 (fr) | 1996-05-30 | 1997-04-18 | Dispositif pour fixer un outil à l'extrémité du bras d'une pelle mécanique |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0810330B1 (fr) |
| AT (1) | ATE225881T1 (fr) |
| DE (1) | DE69716164T2 (fr) |
| DK (1) | DK0810330T3 (fr) |
| ES (1) | ES2184967T3 (fr) |
| FR (1) | FR2749332B1 (fr) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE791834A (nl) * | 1971-12-01 | 1973-03-16 | Verachtert Antonius P | Graafmachine |
| FR2717516B1 (fr) * | 1994-03-16 | 1996-05-03 | Pel Job Groupe | Dispositif pour permettre la prise automatique d'outils, notamment pour engins de terrassement ou analogue. |
| FR2725224B1 (fr) * | 1994-09-29 | 1997-04-18 | Morin Freres | Perfectionnements aux dispositifs pour fixer un outil a l'extremite du bras d'une pelle hydraulique ou analogue |
-
1996
- 1996-05-30 FR FR9606641A patent/FR2749332B1/fr not_active Expired - Fee Related
-
1997
- 1997-04-18 AT AT97400869T patent/ATE225881T1/de active
- 1997-04-18 EP EP97400869A patent/EP0810330B1/fr not_active Expired - Lifetime
- 1997-04-18 ES ES97400869T patent/ES2184967T3/es not_active Expired - Lifetime
- 1997-04-18 DK DK97400869T patent/DK0810330T3/da active
- 1997-04-18 DE DE69716164T patent/DE69716164T2/de not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP0810330A1 (fr) | 1997-12-03 |
| FR2749332A1 (fr) | 1997-12-05 |
| DE69716164T2 (de) | 2003-06-05 |
| FR2749332B1 (fr) | 1998-07-03 |
| DE69716164D1 (de) | 2002-11-14 |
| DK0810330T3 (da) | 2003-02-03 |
| ATE225881T1 (de) | 2002-10-15 |
| ES2184967T3 (es) | 2003-04-16 |
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