EP2197779B1 - Articulated mechanical arm - Google Patents
Articulated mechanical arm Download PDFInfo
- Publication number
- EP2197779B1 EP2197779B1 EP08789695.7A EP08789695A EP2197779B1 EP 2197779 B1 EP2197779 B1 EP 2197779B1 EP 08789695 A EP08789695 A EP 08789695A EP 2197779 B1 EP2197779 B1 EP 2197779B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rigid section
- arm
- pivot point
- rigid
- cylinder
- 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.)
- Active
Links
- 230000007246 mechanism Effects 0.000 claims description 16
- 241000167854 Bourreria succulenta Species 0.000 claims description 13
- 235000019693 cherries Nutrition 0.000 claims description 13
- RRLHMJHRFMHVNM-BQVXCWBNSA-N [(2s,3r,6r)-6-[5-[5-hydroxy-3-(4-hydroxyphenyl)-4-oxochromen-7-yl]oxypentoxy]-2-methyl-3,6-dihydro-2h-pyran-3-yl] acetate Chemical compound C1=C[C@@H](OC(C)=O)[C@H](C)O[C@H]1OCCCCCOC1=CC(O)=C2C(=O)C(C=3C=CC(O)=CC=3)=COC2=C1 RRLHMJHRFMHVNM-BQVXCWBNSA-N 0.000 description 12
- 230000011514 reflex Effects 0.000 description 5
- 230000001154 acute effect Effects 0.000 description 3
- 230000002265 prevention Effects 0.000 description 2
- 238000013016 damping Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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
- E02F3/30—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
- E02F3/301—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 with more than two arms (boom included), e.g. two-part boom with additional dipper-arm
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/54—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes with pneumatic or hydraulic motors, e.g. for actuating jib-cranes on tractors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
- B66F11/04—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
- B66F11/044—Working platforms suspended from booms
-
- 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
Definitions
- This invention relates to an articulated mechanical arm according to the preamble of claim 1.
- Such an arm is known from DE 1 102 366 B .
- Mechanical arms are seen in wide use provided by a number of manufacturers for applications including digging.
- such mechanical arms utilise rigid beam sections connected to each other at pivot points.
- the rigid sections pivot in a vertical plane within an angular range less than a reflex angle.
- Such limited angular freedom of motion suits the application of such a mechanical arm for low level work such as digging.
- the use of such an arm for overhead work is limited due to restrictions placed upon the angular freedom of articulation of the arm by the design of the arm and the pivot points.
- a lifting crane is an example of a device that uses a mechanical arm.
- DE 3 609 512 , EP 1 770 050 and FR 2 600 634 each describe examples of a crane using a mechanical articulated arm.
- the crane includes a columnar stanchion with a main jib that is pivotably attached to the stanchion and is connected to a swivel arm by means of a joint.
- a single hydraulic cylinder/piston mechanism is operable to swivel the arm in relation to the main jib by means of an articulation system that includes two interacting articulation pieces.
- the hydraulic cylinder/piston mechanism is attached to the top of the main jib to allow the arm to swivel between two end positions; a first position in which the swivel arm is located substantially parallel to the underside of the main jib and a second position where the arm projects upwards from the free end of the main jib at a certain angle, for example 50 degrees.
- a foldable crane is described, where the crane includes a crane support and a pivotal arm system that includes a lift arm and a telescopic articulated arm rotatably hinged to the lift arm.
- a lift cylinder operates between the support and the lift arm and an articulation cylinder operates between the lift arm and the telescopic arm.
- the crane In the stowed condition the crane is arranged with the arms and the support forming a Z shape.
- the lift arm rotates about a pivot in a one direction and the telescopic arm rotates about the pivot point on the lift arm in an opposite direction to unfold the arm mechanism. Further rotation of both the lift arm and the telescopic arm moves the arm to the operating position as a lifting crane.
- a device that is suitable for use with a lifting machine such as a crane jib is described.
- the device controls the articulation movement of two arms; where one arm is fixed and the other arm is movable relative to the first.
- the movement of the second arm is by rotation about a pivot point where the two arms join together at one end.
- Rotation of the moving arm is controlled by two cylinder/pistons that are joined together at one end and are pivotally attached to a lever arm connected to the pivot point.
- the other end of the first cylinder is connected to the fixed arm and the other end of the second piston is connected to the moving arm.
- Discrete pieces of equipment for example "cherry pickers" are used for overhead, high level working.
- a platform is elevated, typically using a scissor-like mechanism, or with rigid sections which pivot in a vertical plane with an angular range less than a reflex angle in order to provide a base from which work can be conducted.
- an articulated mechanical arm according to claim 1.
- Such an articulated mechanical arm allows for operation both as a digger arm and as a "cherry picker” due to the range of movement of the first rigid section relative to the second rigid section.
- the arm can thus function as a mechanical digger or as a cherry picker with little more effort than swapping the digger bucket for a cherry picker platform.
- the mechanical arm when used on a vertical plane, would be suitable for both higher level (eg overhead) work as well as for lower level work (eg below head height).
- the angular range of the first and second rigid sections may range from an acute angle through an obtuse angle to a reflex angle.
- the working angle of operation between the adjacent first and second rigid sections may range from being an acute through an obtuse to a reflex angle in either direction.
- the articulated mechanical arm may comprise one or more hydraulic or pneumatic cylinders, the cylinders having a fulcrum centre which is arranged to load and/or move at least one of the plurality of a rigid sections to which it is pivotally connected relative to another of the plurality of rigid sections.
- the articulated mechanical arm may comprise a pivotal motion assistance mechanism, for example a ratchet clamp.
- the pivotal motion assistance mechanism may be arranged to assist relative pivotal movement of rigid sections independently of any other external object, for example the ground.
- the articulated mechanical arm may comprise actuators such as hydraulic cylinders or angular actuators such as hydraulic motors.
- the articulated mechanical arm may comprise fittings arranged to receive at least one attachment.
- the articulated mechanical arm may comprise a control mechanism arranged to control the orientation of the at least one attachment.
- the attachment may comprise at least one of the following: cherry picker platform, bucket, pneumatic or hydraulic drill, pneumatic or hydraulic hammer, pallet lifting forks, or a hedge or bush cutter.
- the articulated mechanical arm may comprise a mechanism for temporarily moving the fulcrum of a cylinder which would otherwise obstruct the movement of the rigid sections to a configuration suitable for overhead operation.
- the articulated arm may comprise a damping mechanism arranged to dampen gravity assisted movement of pivotally connected adjacent rigid sections.
- an articulated mechanical arm 1 comprises first rigid section 2 and second rigid section 3, a pivot 4, a hydraulic ram 5 and a base 6;
- the base 6 comprises a mechanical digger, a tractor, or any suitable vehicle, for example a four wheel drive, all terrain vehicle.
- the present embodiment comprises an attachment in the form of bucket 7 for digging purposes.
- the inferior angle of operation ⁇ i is less than 180 degrees and the articulated mechanical arm 1 operates in the manner of a standard digger arm where the fulcrum 20 of the ram 5 operates exclusively within the superior angle of operation ⁇ s and does not intersect the axis 21 of the first rigid section 2.
- the first rigid section 2 has a recess 8 extending partway along its longitudinal axis from the pivot 4 so as to define a substantially U-shaped channel therein.
- the recess 8 allows part, or all of, the ram 5 to pass from one side of the first rigid section 2 to the other. This, changes the point of action of the fulcrum 20 of the ram 5 from the superior angle ⁇ s of operation to the inferior angle of operation ⁇ i .
- the second rigid section 3 pivots with respect to the first rigid section such that the inferior angle of operation ⁇ i can be a reflex angle. This allows the use of the arm 1 for high level applications for example as a "cherry picker", with the fitting of a suitable platform 9.
- the drawings represent the sequence of events to raise the cherry picker platform from ground level upwards.
- the downward load is maintained such that the longitudinal axis of the second rigid section 3 passes overcentre of the pivot 4.
- the longitudinal axis of the second rigid section 3 crosses or intersects the longitudinal axis of the first rigid section 2 so that the fulcrum 20 now operates in the inferior angle of operation ⁇ i .
- the ram 5 extends further such that second rigid section 3 rotates further about the pivot 4 and the superior angle of operation ⁇ s reduces accordingly, such that it may become an acute angle.
- an additional rigid section 11 allows operation of the arm 1 such that the platform 9 can be at even a higher level or at a position more distant from the support base 6.
- the extra section allows the platform 9 to remain upright even at ground level and a control mechanism 12 maintains the platform 9 level in operation.
- first rigid section 2 and second rigid section 3 are used for the convenience of describing their relationship to one another and do not reflect their positions in a plurality of rigid sections.
- Figures 10 to 14 show a second embodiment of an articulated arm subsection that is substantially the same as that of Figure 1 . Accordingly, similar parts are accorded the same reference numerals.
- the arm 1 comprises an additional ram 13 and a cam 14.
- the cam 14 is rotatably linked to the additional ram 13, the pivot 15, the first rigid section 2 and the ram 5.
- Extension of additional ram 13 changes the position of the pivot 15 of the ram 5 from its position within the superior angle of operation ⁇ s to a position within the inferior angle of ⁇ i through actuating rotation of the cam 14.
- a ratchet 16 maintains the second rigid section 3 in the overcentre position until released.
- the additional ram 13 retracts to reverse the rotation of the cam 14 to return the anchor pivot 15 of the ram 5 to its original position within the superior angle of operation ⁇ s .
- Extension of the ram 5 now rotates the second rigid section 3 in a direction to further reduce the superior angle ⁇ s while the ratchet 16 offers minimal resistance.
- this mechanism When this mechanism in its original position it can be used to prevent either unwanted downward or unwanted upward overcentring of the second rigid section 3.
- the prevention of unwanted downward overcentring of the arm 1 is important when the arm 1 is operating in the superior angle of operations, for example as a cherry picker.
- the prevention of unwanted upward overcentring of the arm 1 is important when the arm is operating in the inferior angle of operation, for example digging, where the mechanism limits the inferior angle of operation to less than 180 degrees.
- Such an arrangement allows the overcentring of the second rigid section 3 with respect to the first rigid section 2 without the use of the ground or other external body as a counterload.
- any suitable mechanism may be employed in order to limit either of the superior, or the inferior, angles of operation to less than 180 degrees.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Jib Cranes (AREA)
- Manipulator (AREA)
Description
- This invention relates to an articulated mechanical arm according to the preamble of
claim 1. Such an arm is known fromDE 1 102 366 B . - Mechanical arms are seen in wide use provided by a number of manufacturers for applications including digging. Typically, such mechanical arms utilise rigid beam sections connected to each other at pivot points. Typically, the rigid sections pivot in a vertical plane within an angular range less than a reflex angle. Such limited angular freedom of motion suits the application of such a mechanical arm for low level work such as digging. However, the use of such an arm for overhead work is limited due to restrictions placed upon the angular freedom of articulation of the arm by the design of the arm and the pivot points.
- A lifting crane is an example of a device that uses a mechanical arm.
DE 3 609 512EP 1 770 050FR 2 600 634DE 3 609 512 - In
EP 1 770 050 - In
FR 2 600 634 - Discrete pieces of equipment, for example "cherry pickers", are used for overhead, high level working. In such a "cherry picker" a platform is elevated, typically using a scissor-like mechanism, or with rigid sections which pivot in a vertical plane with an angular range less than a reflex angle in order to provide a base from which work can be conducted.
- Such "cherry pickers" are not suitable for use in underhead operations such as digging. This is because the raising mechanisms are inherently not suitable for movement below the horizontal plane of the base of the "cherry picker".
- According to the present invention, there is provided an articulated mechanical arm according to
claim 1. - Such an articulated mechanical arm allows for operation both as a digger arm and as a "cherry picker" due to the range of movement of the first rigid section relative to the second rigid section. The arm can thus function as a mechanical digger or as a cherry picker with little more effort than swapping the digger bucket for a cherry picker platform. For example, when used on a vertical plane, the mechanical arm would be suitable for both higher level (eg overhead) work as well as for lower level work (eg below head height).
- The angular range of the first and second rigid sections may range from an acute angle through an obtuse angle to a reflex angle.
- The ability of the rigid sections to pivot in relation to each other on a plane through an angle greater than 180 degrees in either direction gives a greater freedom of operating angle than is currently available.
- The working angle of operation between the adjacent first and second rigid sections may range from being an acute through an obtuse to a reflex angle in either direction.
- The articulated mechanical arm may comprise one or more hydraulic or pneumatic cylinders, the cylinders having a fulcrum centre which is arranged to load and/or move at least one of the plurality of a rigid sections to which it is pivotally connected relative to another of the plurality of rigid sections.
- The articulated mechanical arm may comprise a pivotal motion assistance mechanism, for example a ratchet clamp. The pivotal motion assistance mechanism may be arranged to assist relative pivotal movement of rigid sections independently of any other external object, for example the ground.
- The articulated mechanical arm may comprise actuators such as hydraulic cylinders or angular actuators such as hydraulic motors.
- The articulated mechanical arm may comprise fittings arranged to receive at least one attachment. The articulated mechanical arm may comprise a control mechanism arranged to control the orientation of the at least one attachment. The attachment may comprise at least one of the following: cherry picker platform, bucket, pneumatic or hydraulic drill, pneumatic or hydraulic hammer, pallet lifting forks, or a hedge or bush cutter.
- The articulated mechanical arm may comprise a mechanism for temporarily moving the fulcrum of a cylinder which would otherwise obstruct the movement of the rigid sections to a configuration suitable for overhead operation.
- The articulated arm may comprise a damping mechanism arranged to dampen gravity assisted movement of pivotally connected adjacent rigid sections.
- Embodiments of the invention will now be described, by way of example only, with reference to the accompanying drawings:
-
Figure 1 is a schematic representation of an articulated mechanical arm according to an aspect of the present invention shows a typical digging application comprising two rigid sections where the superior angle of operation Θs and the inferior angle of operation Θi are both defined by the relative angles of theaxis 21 of the firstrigid section 2 and theaxis 22 of the secondrigid section 3; -
Figure 2 is a plan view of a pivot region of the articulated mechanical arm ofFigure 1 ; -
Figures 3 to 6 are representations of two rigid sections of the articulated mechanical arm ofFigure 1 being configured for an overhead application; -
Figures 7 to 9 are representations illustrating the introduction into the articulated mechanical arm of a further rigid section so as to allow work at higher levels and at positions more distant to the support base; -
Figures 10 to 14 are cross-sectional side elevations of the pivot region of a second embodiment of an articulated arm according to an aspect of the present invention. -
Figure 15 is a schematic diagram showing thefirst section 2 andsecond section 3 of thearm 1 infigure 1 , in alternate configurations. - Referring now to
Figures 1 and 2 , an articulatedmechanical arm 1 comprises firstrigid section 2 and secondrigid section 3, apivot 4, ahydraulic ram 5 and abase 6;. Typically, thebase 6 comprises a mechanical digger, a tractor, or any suitable vehicle, for example a four wheel drive, all terrain vehicle. The present embodiment comprises an attachment in the form of bucket 7 for digging purposes.
When operated as a digger the inferior angle of operation Θi is less than 180 degrees and the articulatedmechanical arm 1 operates in the manner of a standard digger arm where thefulcrum 20 of theram 5 operates exclusively within the superior angle of operation Θs and does not intersect theaxis 21 of the firstrigid section 2. - The first
rigid section 2 has a recess 8 extending partway along its longitudinal axis from thepivot 4 so as to define a substantially U-shaped channel therein. The recess 8 allows part, or all of, theram 5 to pass from one side of the firstrigid section 2 to the other. This, changes the point of action of thefulcrum 20 of theram 5 from the superior angle Θs of operation to the inferior angle of operation Θi. The secondrigid section 3 pivots with respect to the first rigid section such that the inferior angle of operation Θi can be a reflex angle. This allows the use of thearm 1 for high level applications for example as a "cherry picker", with the fitting of a suitable platform 9. - The drawings represent the sequence of events to raise the cherry picker platform from ground level upwards.
- Referring now to
Figures 3 and 4 , in order to raise thefree end 10 of thearm 1 above the longitudinal axis of the firstrigid section 2, theram 5 is retracted fully and the platform 9 is lowered to the ground. In a typical digger arm arrangement, theram 5 reaches is full retractive limit when the inferior angle of operation is less than 180 degrees, this places a limitation on the inferior angle of operation. In order to remove this limitation on the inferior angle of operation a mechanism is provided to selectively and temporarily free theram 5 fromfulcrum point 15 on the firstrigid section 2. A downward load is maintained to cause the longitudinal axis of the secondrigid section 3 to rotate about the pivot such that the longitudinal axes of the first and secondrigid sections rigid section 3 passes overcentre of thepivot 4. The longitudinal axis of the secondrigid section 3 crosses or intersects the longitudinal axis of the firstrigid section 2 so that thefulcrum 20 now operates in the inferior angle of operation Θi. Once the secondrigid section 3 has passed overcentre, flipped upwards, thearm 1 is suitable for use in higher level applications. - Referring now to
Figure 5 and 6 , theram 5 extends further such that secondrigid section 3 rotates further about thepivot 4 and the superior angle of operation Θs reduces accordingly, such that it may become an acute angle. - Referring now to
Figures 7 to 9 , the use of an additionalrigid section 11 allows operation of thearm 1 such that the platform 9 can be at even a higher level or at a position more distant from thesupport base 6. The extra section allows the platform 9 to remain upright even at ground level and acontrol mechanism 12 maintains the platform 9 level in operation. - It will be appreciated that although described with reference to a cherry picker platform the use of an additional rigid section also allows the operation of a digger bucket or other attachment at an increased distance from the
base 6. Also, it will be appreciated that the labels firstrigid section 2 and secondrigid section 3 are used for the convenience of describing their relationship to one another and do not reflect their positions in a plurality of rigid sections. -
Figures 10 to 14 show a second embodiment of an articulated arm subsection that is substantially the same as that ofFigure 1 . Accordingly, similar parts are accorded the same reference numerals. - The
arm 1 comprises anadditional ram 13 and acam 14. Thecam 14 is rotatably linked to theadditional ram 13, thepivot 15, the firstrigid section 2 and theram 5. - Extension of
additional ram 13 changes the position of thepivot 15 of theram 5 from its position within the superior angle of operation Θs to a position within the inferior angle of Θi through actuating rotation of thecam 14. - Retraction of the
additional ram 13 exerts a force on the secondrigid section 3 at anoperating pivot 15 which causes the secondrigid section 3 to rotate about thepivot point 4. The longitudinal axis of the secondrigid section 3 crosses or intersects the longitudinal axis of the firstrigid section 2. Once the secondrigid section 3 has passed overcentre thearm 1 is suitable for use in higher level applications with the fulcrum 20 now operating within the inferior angle of Θi. - A
ratchet 16 maintains the secondrigid section 3 in the overcentre position until released. Theadditional ram 13 retracts to reverse the rotation of thecam 14 to return theanchor pivot 15 of theram 5 to its original position within the superior angle of operation Θs. - Extension of the
ram 5 now rotates the secondrigid section 3 in a direction to further reduce the superior angle Θs while theratchet 16 offers minimal resistance. - When this mechanism in its original position it can be used to prevent either unwanted downward or unwanted upward overcentring of the second
rigid section 3. The prevention of unwanted downward overcentring of thearm 1 is important when thearm 1 is operating in the superior angle of operations, for example as a cherry picker. The prevention of unwanted upward overcentring of thearm 1 is important when the arm is operating in the inferior angle of operation, for example digging, where the mechanism limits the inferior angle of operation to less than 180 degrees. - Such an arrangement allows the overcentring of the second
rigid section 3 with respect to the firstrigid section 2 without the use of the ground or other external body as a counterload. - It will be appreciated that any suitable mechanism may be employed in order to limit either of the superior, or the inferior, angles of operation to less than 180 degrees.
- While various embodiments of the invention have been described, it will be apparent to those skilled in the art once given this disclosure that various modifications, changes, improvements and variations may be made without departing from the scope of the invention, as defined by the claims.
Claims (4)
- An articulated mechanical arm (1) comprising:a first rigid section (2) connected to a base (6);a second rigid section (3) pivotably connected to the first rigid section (2) about a first pivot point (4);and a cylinder (5) operatively connected at a first end via a second pivot point (15) to the first rigid section (2) and at a second end via a third pivot point (20) to a first end of the second rigid section (3), the third pivot point (20), and thus the first end of the second rigid section (3), being proximal to the first rigid section (2), such that advancing and retracting the cylinder causes the second rigid section (3) to pivot about the first pivot point (4) relative to the first rigid section (2);wherein the angular position of the second rigid section (3) relative to the first rigid section (2) is such that the arm (1) is configured to selectively perform underhead or overhead work, wherein exerting a load on the second rigid section (3) causes pivotal rotation of the second rigid section (3) about the first pivot point (4) such that the third pivot point (20) crosses the longitudinal axis of the first rigid section (2) to adopt the overhead or underhead working position; characterised in thatthe first rigid section (2) includes a recess (8) arranged to allow passage of the first end of the second rigid section (3) and of the third pivot point (20) when the longitudinal axis of the second rigid section when the cylinder crosses the longitudinal axis of the first rigid section.
- An arm according to claim 1, further comprising an additional cylinder (13) and a cam (14), wherein the cam is rotatably linked to the additional cylinder (13), the second pivot point (15), the cylinder (5) and the first rigid section (2), wherein actuating rotation of the cam (14) is operable to change the angular position of operation of the second pivot point.
- An arm according to claim 1, further comprising a ratchet (16) operable to maintain the second rigid section (3) in an overhead position.
- An arm according to any preceding claim comprising fittings arranged to receive at least one attachment and a control mechanism arranged to control the orientation of the at least one attachment, wherein the attachment comprises at least one of the following: a cherry picker platform, a bucket, an hydraulic/pneumatic drill or hammer, pallet lifting prongs or a hedge cutter.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IES20070639 IES20070639A2 (en) | 2007-09-07 | 2007-09-07 | Articulated mechanical arm |
PCT/IE2008/000084 WO2009031131A2 (en) | 2007-09-07 | 2008-09-03 | Articulated mechanical arm |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2197779A2 EP2197779A2 (en) | 2010-06-23 |
EP2197779B1 true EP2197779B1 (en) | 2016-04-20 |
Family
ID=40404239
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08789695.7A Active EP2197779B1 (en) | 2007-09-07 | 2008-09-03 | Articulated mechanical arm |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2197779B1 (en) |
IE (1) | IES20070639A2 (en) |
WO (1) | WO2009031131A2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140023468A1 (en) * | 2011-04-04 | 2014-01-23 | Vehicules Inpak Inc./Inpak Vehicles Inc. | Vehicle-mounted articulated arm for discharging bins |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1102366B (en) * | 1959-07-03 | 1961-03-16 | Focke Wulf Ges Mit Beschraenkt | Height-adjustable work platform with articulated mast |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4461369A (en) * | 1981-03-30 | 1984-07-24 | Amador Hydraulic Services Limited | Articulated boom and assembly therefor |
SE456575B (en) * | 1985-04-25 | 1988-10-17 | Hiab Foco Ab | CRAN OUR VIPPARM IS TURNABLE RELATIVELY THE MAIN ARM THROUGH A LINKING SYSTEM |
FR2600634B1 (en) * | 1986-06-24 | 1988-09-23 | Guilhem Claire | DEVICE FOR CONTROLLING THE ARTICULATION OF TWO ARMS OF AN E NGIN |
SE466911B (en) * | 1990-08-29 | 1992-04-27 | Hiab Ab | VIPPARMSKRAN |
DK1770050T3 (en) * | 2005-09-29 | 2010-03-15 | Steindl Krantechnik Ges M B H | Collapsible crane |
-
2007
- 2007-09-07 IE IES20070639 patent/IES20070639A2/en not_active IP Right Cessation
-
2008
- 2008-09-03 WO PCT/IE2008/000084 patent/WO2009031131A2/en active Application Filing
- 2008-09-03 EP EP08789695.7A patent/EP2197779B1/en active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1102366B (en) * | 1959-07-03 | 1961-03-16 | Focke Wulf Ges Mit Beschraenkt | Height-adjustable work platform with articulated mast |
Also Published As
Publication number | Publication date |
---|---|
WO2009031131A3 (en) | 2009-06-25 |
IES20070639A2 (en) | 2011-02-16 |
EP2197779A2 (en) | 2010-06-23 |
WO2009031131A2 (en) | 2009-03-12 |
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