EP1595033B1 - Auxiliary device for excavator and excavator provided with said device - Google Patents
Auxiliary device for excavator and excavator provided with said device Download PDFInfo
- Publication number
- EP1595033B1 EP1595033B1 EP02808284A EP02808284A EP1595033B1 EP 1595033 B1 EP1595033 B1 EP 1595033B1 EP 02808284 A EP02808284 A EP 02808284A EP 02808284 A EP02808284 A EP 02808284A EP 1595033 B1 EP1595033 B1 EP 1595033B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- grip element
- excavator
- excavation tool
- movable
- guide means
- 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
- 238000009412 basement excavation Methods 0.000 claims abstract description 52
- 238000013519 translation Methods 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 2
- 210000000245 forearm Anatomy 0.000 description 4
- 230000004913 activation Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000009877 rendering Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 239000010902 straw Substances 0.000 description 2
- 241000909536 Gobiesocidae Species 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 239000004463 hay Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000010871 livestock manure Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004137 mechanical activation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003313 weakening effect 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
- E02F3/36—Component parts
- E02F3/40—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets
- E02F3/402—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with means for facilitating the loading thereof, e.g. conveyors
- E02F3/404—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with means for facilitating the loading thereof, e.g. conveyors comprising two parts movable relative to each other, e.g. for gripping
-
- 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
- E02F3/425—Drive systems for dipper-arms, backhoes or the like
Definitions
- the present invention relates to an auxiliary device for an excavator and, in particular, an auxiliary gripping device for an excavator of the type with articulated arms.
- Excavators with articulated arms generally include a supporting structure, a platform mounted on the supporting structure and a plurality of articulated arms at which ends excavation tools are mounted, for instance buckets, shovels, or the like.
- excavavator By the term “excavator” as is used herein, it is intended to identify also those excavators wherein the articulated arms are installed on a platform constituted by a frame which is mounted, in its turn, on a tractor, for instance like those that are installed on the rear of a grader or a farm tractor. Besides the already mentioned excavation tools, there can be mounted on the articulated arms also grip tools such as crampons to grasp for instance poles or tree trunks, or rake devices for handling hay, straw, etc.
- the shovel In the excavators provided with an excavation shovel, the shovel is mounted on articulated joints or is hinged on a forearm and its movement is operated by an hydraulic jack, which in its turn acts on the shovel or one of its articulated joints of connection to the forearm.
- a problem that affects the known excavators arises when it is necessary to handle loads having a size greater than that of the excavation tool.
- a particularly frequent example of such drawback is the finding of rocks during excavation works. Such rocks are often of such a size that it is not possible to handle them by utilizing the excavation tool only, while having a weight that allows to move them with the excavator.
- US-A-4932832 discloses an auxiliary device for an excavator according to the preamble of claim 1 and discloses an excavator according to the preamble of claim 9.
- the auxiliary device is mounted on a supporting element fastened to an arm of the excavator and does not require additional power or operation control devices to function as gripping, crushing or holding device. Appropriate linkages allow to move in rotation the auxiliary device under the action of the operating means for the excavation tool.
- US-A-4283866 shows another example of an auxiliary clasping device operated by the same cylinder actuator of the excavation tool.
- Object of the present invention is to solve the aforesaid problems by proposing in particular an auxiliary device for excavators with articulated arms, suitable to give the excavators additional grip functions in a particularly simple and economical manner.
- Another object of the present invention is to provide an auxiliary device of the aforesaid type that can be easily installed also on already existing excavators.
- a further object of the present invention is to provide an auxiliary device of the aforesaid type that can be easily installed and removed in a short time.
- an auxiliary device for an excavator with articulated arms provided with an excavation tool movable in rotation under the action of suitably control means.
- the auxiliary device includes at least one supporting element that can be fastened to at least one of the excavator articulated arms, at least one movable grip element and rigid mechanical connection means to mechanically connect the movable grip element to the excavation tool and transmit to the grip element a movement generated by the means for actuating the operation in rotation of the excavation tool.
- the grip element is movable in translation along a rectilinear direction.
- both the excavation tool and the grip element are mobile with respect to each other and approach until they reach a closing position, wherein it is possible to grasp and firmly retain a load and moving away from each other until they reach an opening position that allow the unloading of the load.
- the rigid mechanical connection means include rods that connect the grip element to an articulation system of the excavation tool.
- the connection to the articulation system is preferably obtained through a removable pin.
- the grip element is slidingly mounted in suitable guide means included in the supporting element.
- the ends of the guide elements are advantageously open to allow an easy removal of the grip means from the same guide means.
- the grip element can be easily removed in a few moments, if this should be necessary: actually, it suffices to release the engagement between the pin and the rods in correspondence of the articulation joint and to extract the grip element from one of the ends of the guide means.
- the pin can be only slightly extracted to disengage the rods, locking it therefore again in its position in the corresponding articulation, whereby only the excavation function is restored. By carrying out the same operations reversed, it is possible to restore in a few moments also the grip function.
- an excavator with articulated arms that includes at least one excavation tool rotably mounted on one of the articulated arms and means for controlling the actuation in rotation of the excavation tool.
- the excavator advantageously includes an auxiliary device mounted on at least one of the articulated arms and having at least one supporting element and at least one movable grip element, as well as rigid mechanical connection means to connect the grip element to the excavation tool and to mechanical transmit to the grip element a movement generated by the means for actuating the operation in rotation of the excavation tool.
- the grip element is movable in translation along a rectilinear direction.
- the movable grip element includes a grip portion having a width smaller that the width of the excavation tool. This allows to maintain the grip element installed without hindering the excavation functions, and therefore to have it always available, should it be necessary to utilize it to remove loads, for instance blocks or the like, which may be found during the excavation.
- the excavator according to the present invention has several advantages compared to the known art.
- the presence of the grip element allows to grasp and shift items having a size greater than those of a conventional excavation tool, such as for instance a shovel.
- the versatility of the machine is increased, which beside being utilizable as an excavator may be also utilized for handling loads and materials without requiring the replacement of the excavation tool with other tools suitable for the purpose.
- high loads can be handled, for instance trunks and poles, or light but difficult-to-grasp loads, for instance hay, straw, manure or the like.
- the device can be produced economically and installed easily on already existing excavators, an additional jack for the activation of the grip element being unnecessary.
- the excavator 1 includes, as know in the art, an excavation tool 2, for instance a shovel, which is connected by a pin 3 to one of the articulated arms of the excavator, in particular to forearm 4, also known as thrusting arm or excavation arm.
- an excavation tool 2 for instance a shovel
- forearm 4 also known as thrusting arm or excavation arm.
- Arm 4 has an hydraulic jack 5 or like operating means, to impart shovel 2 movements through an articulated parallelogram system that includes two arched rods 8 and 9, with rod 8 hinged at 10 on the articulated arm 4 and rod 9 hinged at 11 on shovel 2.
- Rods 8 and 9 are also connected to each other through a pin 7 to which also the mobile stem of hydraulic jack 5 is connected. As is known, the activation of hydraulic jack 5 acts on the articulated parallelogram system to cause the rotation of shovel 2 about pin 3.
- the excavator shown in the figures is provided with an auxiliary device including a grip element 12, which is moved by the same jack 5 that actuates shovel 2, in such a manner that shovel 2 and grip element 12 are mutually movable between an opening position ( Figure 1 ) and a closing position ( Figure 2 ).
- rigid mechanical connection means constituted by a couple of rods 13 that connect grip element 12 to the rotation operating means of shovel 2.
- rods 13 are hinged at one of their ends on grip element 12 at 14, while at the opposite end the rods 13 are connected to pin 7 that connects in its turn stem 6 of jack 5 and the arched rods 8 and 9 of the articulation system of shovel 2.
- grip element 12 is mechanically shifted in translation along a rectilinear direction between the two mutual opening and closing positions shown in Figures 1 and 2 , an additional jack for the control of the movement of grip element 12 being unnecessary.
- Grip element 12 includes a T-shaped base portion 15 which is slidingly engaged in guide means 16 fastened to the articulated arm 4.
- Guide means 16 include a plate 17 that is permanently fastened to arm 4, for instance by welding or any other know means that allows to prevent the weakening of said arm.
- Two L-shaped uprights 19 are fastened on plate 17, that are fastened to plate 17 by means of nuts 20 that allow, if necessary, the possible removal of uprights 19.
- grip element 12 includes a grip portion having a width smaller than the width of shovel 2. In this manner, grip element 12 does not hinder the movements of shovel 2 during the excavation works and can therefore be kept mounted without creating problems for the excavator utilization. However, if necessary, grip element 12 can be removed in a rapid and simple manner, as is explained hereunder.
- pin 7 to which rods 13 are connected, as well as stem 6 of jack 5 and arched rods 8 and 9, is removable to allow a rapid removal or reinstallation of the auxiliary device.
- Pin 7 is in fact locked on both sides in a suitable way, for instance by means of pegs or split pins 18 (one of which can be seen in Figures 1 and 2 ).
- the restoring of grip element 12 can be effected as much rapidly by carrying out the same operations reversed, again without completely removing pin 7 from the articulation system of the excavation tool.
- both ends of guide means 16 are open for a more easy insertion or extracting of base portion 15 from either end. Once grip element 12 is removed, only plate 17 and uprights 19 remain fastened to arm 4, and it is therefore possible to utilize only the excavation tool 2.
- guide means 16 offer another advantage. In fact, they allow base portion 15 to protrude from its ends when grip element 12 is, for instance, in the opening position with respect to shovel 2 ( Figure 1 ) or also in the closing position with respect to shovel 2 ( Figure 2 ). In this way, possible residues or material debris can be expelled from guide means 16 without dismounting the same, thus rendering the possible maintenance operations particularly simple and economical.
- the working of the auxiliary device according to the invention is extremely simple.
- the rigid mechanical connection means that operate the translation of grip element 12 along guide means 16 are, as mentioned above, made up by rods 13 which link the grip element 12 to pin 7.
- rods 13 are shifted consequently and drag grip element 12 in translation along guide means 16, approaching to or moving away from shovel 2. In this way it is possible to grasp loads L having a size much greater than that of shovel 2, as can be seen for instance in Figure 4 .
- rods 13 show a slight curvature in their central portion to prevent possible interference with a load kept between excavation tool 2 and grip element 12 in the mutual closing position ( Figure 2 ).
- rods 13 may have any shape whatever, provided that it is suitable for the purpose, for instance a rectilinear shape, or have a more marked curvature with respect to the one shown.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Earth Drilling (AREA)
- Shovels (AREA)
Abstract
Description
- The present invention relates to an auxiliary device for an excavator and, in particular, an auxiliary gripping device for an excavator of the type with articulated arms.
- Excavators with articulated arms generally include a supporting structure, a platform mounted on the supporting structure and a plurality of articulated arms at which ends excavation tools are mounted, for instance buckets, shovels, or the like.
- By the term "excavator" as is used herein, it is intended to identify also those excavators wherein the articulated arms are installed on a platform constituted by a frame which is mounted, in its turn, on a tractor, for instance like those that are installed on the rear of a grader or a farm tractor. Besides the already mentioned excavation tools, there can be mounted on the articulated arms also grip tools such as crampons to grasp for instance poles or tree trunks, or rake devices for handling hay, straw, etc.
- In the excavators provided with an excavation shovel, the shovel is mounted on articulated joints or is hinged on a forearm and its movement is operated by an hydraulic jack, which in its turn acts on the shovel or one of its articulated joints of connection to the forearm.
- A problem that affects the known excavators arises when it is necessary to handle loads having a size greater than that of the excavation tool. A particularly frequent example of such drawback is the finding of rocks during excavation works. Such rocks are often of such a size that it is not possible to handle them by utilizing the excavation tool only, while having a weight that allows to move them with the excavator.
- In this case, it is needed the intervention of other especially equipped machines that sometime are not directly available in the working site, or it might be necessary to replace the excavation tool and/or the forearm that supports the same. These operations involve particularly long times and can therefore delay works considerably.
- As a partial solution of this problem, excavations tools have been realized that are provided with an articulated counter-shovel activated by a dedicated jack. However, this solution is expensive especially in that it requires a more powerful hydraulic system, and the overall dimensions of the additional auxiliary devices make its adoption on reduced size machines difficult. Besides, the adoption of the counter-shovel may be a hindrance to the usual excavation functions.
-
US-A-4932832 discloses an auxiliary device for an excavator according to the preamble of claim 1 and discloses an excavator according to the preamble ofclaim 9. - The auxiliary device is mounted on a supporting element fastened to an arm of the excavator and does not require additional power or operation control devices to function as gripping, crushing or holding device. Appropriate linkages allow to move in rotation the auxiliary device under the action of the operating means for the excavation tool.
-
US-A-4283866 shows another example of an auxiliary clasping device operated by the same cylinder actuator of the excavation tool. - Object of the present invention is to solve the aforesaid problems by proposing in particular an auxiliary device for excavators with articulated arms, suitable to give the excavators additional grip functions in a particularly simple and economical manner.
- Another object of the present invention is to provide an auxiliary device of the aforesaid type that can be easily installed also on already existing excavators.
- A further object of the present invention is to provide an auxiliary device of the aforesaid type that can be easily installed and removed in a short time.
- Such objects are achieved thanks to on auxiliary device according to claim 1, or anyhow thanks to an excavator according to
claim 9. Further characteristics are specified in the dependent claims. - In a first aspect of the present invention, there is provided an auxiliary device for an excavator with articulated arms, provided with an excavation tool movable in rotation under the action of suitably control means. The auxiliary device includes at least one supporting element that can be fastened to at least one of the excavator articulated arms, at least one movable grip element and rigid mechanical connection means to mechanically connect the movable grip element to the excavation tool and transmit to the grip element a movement generated by the means for actuating the operation in rotation of the excavation tool. The grip element is movable in translation along a rectilinear direction.
- In this way, the grip element is moved by the same means for operating the excavation tool, rendering thereby unnecessary the use of additional operating means and, therefore, the upgrade of the hydraulic system.
- In particular, both the excavation tool and the grip element are mobile with respect to each other and approach until they reach a closing position, wherein it is possible to grasp and firmly retain a load and moving away from each other until they reach an opening position that allow the unloading of the load.
- The rigid mechanical connection means include rods that connect the grip element to an articulation system of the excavation tool. The connection to the articulation system is preferably obtained through a removable pin.
- The grip element is slidingly mounted in suitable guide means included in the supporting element. The ends of the guide elements are advantageously open to allow an easy removal of the grip means from the same guide means.
- Thus, the grip element can be easily removed in a few moments, if this should be necessary: actually, it suffices to release the engagement between the pin and the rods in correspondence of the articulation joint and to extract the grip element from one of the ends of the guide means. The pin can be only slightly extracted to disengage the rods, locking it therefore again in its position in the corresponding articulation, whereby only the excavation function is restored. By carrying out the same operations reversed, it is possible to restore in a few moments also the grip function.
- According to a second aspect of the present invention, an excavator with articulated arms is provided, that includes at least one excavation tool rotably mounted on one of the articulated arms and means for controlling the actuation in rotation of the excavation tool. The excavator advantageously includes an auxiliary device mounted on at least one of the articulated arms and having at least one supporting element and at least one movable grip element, as well as rigid mechanical connection means to connect the grip element to the excavation tool and to mechanical transmit to the grip element a movement generated by the means for actuating the operation in rotation of the excavation tool. The grip element is movable in translation along a rectilinear direction.
- Preferably, the movable grip element includes a grip portion having a width smaller that the width of the excavation tool. This allows to maintain the grip element installed without hindering the excavation functions, and therefore to have it always available, should it be necessary to utilize it to remove loads, for instance blocks or the like, which may be found during the excavation.
- The excavator according to the present invention has several advantages compared to the known art. In fact, the presence of the grip element allows to grasp and shift items having a size greater than those of a conventional excavation tool, such as for instance a shovel. In this way also the versatility of the machine is increased, which beside being utilizable as an excavator may be also utilized for handling loads and materials without requiring the replacement of the excavation tool with other tools suitable for the purpose. In this manner, high loads can be handled, for instance trunks and poles, or light but difficult-to-grasp loads, for instance hay, straw, manure or the like.
- Besides, thanks to the mechanical activation (instead of hydraulic activation) through the rigid mechanical connection means, the device can be produced economically and installed easily on already existing excavators, an additional jack for the activation of the grip element being unnecessary.
- These and other advantages will be evident from the following description and the drawings attached by way of non limiting illustration, wherein:
-
Figure 1 is a side view of the excavator with an auxiliary grip device according to the invention, with the excavation tool and the grip element in a mutual opening position; -
Figure 2 is a view similar to that ofFigure 1 , with the excavation tool and the grip element in a mutual opening position; -
Figure 3 is a rear view of the auxiliary gripping device mounted on an excavator according to the present invention, with the excavation tool and the grip element in a mutual opening position; -
Figure 4 is a perspective view of an excavator handling a load; -
Figure 5 is a cross-section view of some elements of the auxiliary device according to the present invention, mounted on an arm of an excavator; and -
Figure 6 is a plan view of the supporting element mounted on an arm of an excavator. - With first reference to
Figures 1-4 , the excavator 1 includes, as know in the art, anexcavation tool 2, for instance a shovel, which is connected by apin 3 to one of the articulated arms of the excavator, in particular toforearm 4, also known as thrusting arm or excavation arm. -
Arm 4 has anhydraulic jack 5 or like operating means, to impartshovel 2 movements through an articulated parallelogram system that includes twoarched rods rod 8 hinged at 10 on the articulatedarm 4 androd 9 hinged at 11 onshovel 2. -
Rods pin 7 to which also the mobile stem ofhydraulic jack 5 is connected. As is known, the activation ofhydraulic jack 5 acts on the articulated parallelogram system to cause the rotation ofshovel 2 aboutpin 3. - According to the present invention, the excavator shown in the figures is provided with an auxiliary device including a
grip element 12, which is moved by thesame jack 5 that actuatesshovel 2, in such a manner thatshovel 2 andgrip element 12 are mutually movable between an opening position (Figure 1 ) and a closing position (Figure 2 ). - There are in fact provided rigid mechanical connection means constituted by a couple of
rods 13 that connectgrip element 12 to the rotation operating means ofshovel 2. In particular, as shown,rods 13 are hinged at one of their ends ongrip element 12 at 14, while at the opposite end therods 13 are connected topin 7 that connects in itsturn stem 6 ofjack 5 and thearched rods shovel 2. - In this way,
grip element 12 is mechanically shifted in translation along a rectilinear direction between the two mutual opening and closing positions shown inFigures 1 and2 , an additional jack for the control of the movement ofgrip element 12 being unnecessary. -
Figures 5 and 6 show with more details some parts of the auxiliary device according to the present invention.Grip element 12 includes a T-shapedbase portion 15 which is slidingly engaged in guide means 16 fastened to the articulatedarm 4. - Guide means 16 include a
plate 17 that is permanently fastened toarm 4, for instance by welding or any other know means that allows to prevent the weakening of said arm. - Two L-shaped
uprights 19 are fastened onplate 17, that are fastened to plate 17 by means ofnuts 20 that allow, if necessary, the possible removal ofuprights 19. - As can be see in particular in the view of
Figure 3 ,grip element 12 includes a grip portion having a width smaller than the width ofshovel 2. In this manner,grip element 12 does not hinder the movements ofshovel 2 during the excavation works and can therefore be kept mounted without creating problems for the excavator utilization. However, if necessary,grip element 12 can be removed in a rapid and simple manner, as is explained hereunder. - In fact, according to an advantageous aspect of the present invention,
pin 7 to whichrods 13 are connected, as well asstem 6 ofjack 5 andarched rods Pin 7 is in fact locked on both sides in a suitable way, for instance by means of pegs or split pins 18 (one of which can be seen inFigures 1 and2 ). - In this way, there is no need to completely remove
pin 7 from the articulation system, but only pegs or splitpins 18 need being removed to release the engagement betweenpin 7 androds 13, by extracting only slightly pin 7 first from one side and then from the other side. This allows to remove the connection ofrods 13 to the articulated system of the excavator and to extract then thegrip element 12 from guide means 16. Pegs or splitpins 18 are then mounted again in their position to preventpin 7 from extraction during excavation works. - The restoring of
grip element 12 can be effected as much rapidly by carrying out the same operations reversed, again without completely removingpin 7 from the articulation system of the excavation tool. - As can be seen in the figures, and in particular in
Figures 1 to 3 , both ends of guide means 16 are open for a more easy insertion or extracting ofbase portion 15 from either end. Oncegrip element 12 is removed, onlyplate 17 anduprights 19 remain fastened toarm 4, and it is therefore possible to utilize only theexcavation tool 2. - The open ends of guide means 16 offer another advantage. In fact, they allow
base portion 15 to protrude from its ends whengrip element 12 is, for instance, in the opening position with respect to shovel 2 (Figure 1 ) or also in the closing position with respect to shovel 2 (Figure 2 ). In this way, possible residues or material debris can be expelled from guide means 16 without dismounting the same, thus rendering the possible maintenance operations particularly simple and economical. - The working of the auxiliary device according to the invention is extremely simple. The rigid mechanical connection means that operate the translation of
grip element 12 along guide means 16 are, as mentioned above, made up byrods 13 which link thegrip element 12 topin 7. When thehydraulic jack 5 actuates inrotation shovel 2,rods 13 are shifted consequently and draggrip element 12 in translation along guide means 16, approaching to or moving away fromshovel 2. In this way it is possible to grasp loads L having a size much greater than that ofshovel 2, as can be seen for instance inFigure 4 . - Various modifications may be introduced without falling outside the scope of the present invention. For instance, in the embodiment described herein,
rods 13 show a slight curvature in their central portion to prevent possible interference with a load kept betweenexcavation tool 2 andgrip element 12 in the mutual closing position (Figure 2 ). However,rods 13 may have any shape whatever, provided that it is suitable for the purpose, for instance a rectilinear shape, or have a more marked curvature with respect to the one shown.
Claims (19)
- Auxiliary device for excavator (1) with articulated arms (4), said excavator having at least one mobile excavation tool (2) which is movable in rotation under the action of operating means (5) including:at least one supporting element (17) that may be fastened to at least one of said articulated arms (4);at least one movable grip element (12); andrigid mechanical connection means (8, 9, 13) to mechanically connect said movable grip element (12) to said excavation tool (2) and transmit to said grip element (12) a movement generated by said rotation operating means (5) of said excavation tool (2), characterized in that said grip element (12) is movable in translation along a rectilinear direction.
- A device according to claim 1, wherein said excavation tool (2) and said grip element (12) are mobile with respect to each other, approaching up to a closing position and moving away up to an opening position.
- A device according to claim 1, wherein said rigid mechanical connection means include rods (8, 9, 13) that connect said grip element (12) to an articulation system of said excavation tool (2).
- A device according to claim 3, wherein said rods (8, 9, 13) are connected to the articulation system by means of a removable pin (7).
- A device according to claim 1, wherein said grip element (12) is slidingly mounted in guide means (16) included in said supporting element (17).
- A device according to claim 5, wherein the ends of said guide means (16) are open.
- A device according to claim 5 or 6, wherein said grip element (12) includes a base portion (15) engaged in said guide means (16), said base portion protruding at least partly from said ends of the guide means (16) when said grip element (12) is in opening or closing position.
- A device according to any of claims 5 to 7, wherein said grip element (12) can be extracted from said guide means (16) through any one of the open ends of the same.
- Excavator (1) with articulated arms (4) including at least one excavation tool (2) rotatably mounted on one of said articulated arms (4) and means (5) to actuate the operation in rotation of said excavation tool (2) including:an auxiliary device mounted on at least one of said articulated arms (4) and having at least one supporting element (17) and at least one movable grip element (12); andrigid mechanical connection means (8, 9, 13) to connect said movable grip element (12) to said excavation tool (2) and mechanically transmit to said grip element (12) a movement generated by said means (5) for actuating the operation in rotation of said excavation tool (2), characterized in that said grip element (12) is movable in translation along a rectilinear direction.
- An excavator (1) according to claim 9, wherein said excavation tool (2) and said grip element (12) are movable with respect to each other, toward to each other up to a closing position and away from each other up to an opening position.
- An excavator (1) according to claim 9, wherein said rigid mechanical connection means include rods (8, 9, 13) that connect said grip element (12) to an articulation system of said excavation tool (2).
- An excavator (1) according to any of claims 9 to 11, wherein the ends of said rods (8, 9, 13) are connected to said articulation joint by means of a removable pin (7).
- An excavator (1) according to any of claims 9 to 12, wherein said means (5) for actuating the operation in rotation of said excavation tool (2) include an hydraulic jack.
- An excavator (1) according to any of claims 9 to 13, wherein said rigid mechanical connection rods (8, 9, 13) are hinged at the end of the mobile stem (6) of said hydraulic jack.
- An excavator (1) according to claim 9, wherein said supporting element (17) is fixed to at least one of said articulated arms (4) by welding.
- An excavator (1) according to claim 9, wherein said grip element (12) is slidingly mounted in guide means (16) included in said supporting element (17).
- An excavator (1) according to claim 16, wherein the ends of said guide means (16) are open.
- An excavator (1) according to claim 16 or 17, wherein said grip element (12) includes a base portion (15) engaged in said guide means (16), said base portion protruding at least partly from said ends of the guide means (16) when said grip element (12) is in opening position or closing position.
- An excavator (1) according to claim 9, wherein said at least one movable grip element (12) includes a grip portion having a width smaller than the width of said excavation tool (2).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/IT2002/000822 WO2004057114A1 (en) | 2002-12-23 | 2002-12-23 | Auxiliary device for excavator and excavator provided with said device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1595033A1 EP1595033A1 (en) | 2005-11-16 |
EP1595033B1 true EP1595033B1 (en) | 2008-09-10 |
Family
ID=32676772
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02808284A Expired - Lifetime EP1595033B1 (en) | 2002-12-23 | 2002-12-23 | Auxiliary device for excavator and excavator provided with said device |
Country Status (7)
Country | Link |
---|---|
US (1) | US20060150446A1 (en) |
EP (1) | EP1595033B1 (en) |
JP (1) | JP2006511740A (en) |
AT (1) | ATE408042T1 (en) |
AU (1) | AU2002368495A1 (en) |
DE (1) | DE60228896D1 (en) |
WO (1) | WO2004057114A1 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1888302A4 (en) | 2005-05-16 | 2015-05-06 | Terminator Ip S A | Improved breaking machine |
US8775035B2 (en) | 2012-12-03 | 2014-07-08 | Deere & Company | Hydraulic management system and method based on auxiliary work tool usage |
JP6241949B2 (en) * | 2014-12-18 | 2017-12-06 | キャタピラー エス エー アール エル | Front attachment for work vehicle |
KR101576854B1 (en) * | 2015-10-23 | 2015-12-21 | 이강원 | Secondary tongs for excavator |
WO2018192850A1 (en) * | 2017-04-19 | 2018-10-25 | Rototilt Group Ab | Control systems for an excavator and methods for controlling an excavator with a movable excavator thumb and an auxiliary tool hold by a tiltrotator |
ES2945142T3 (en) * | 2017-11-01 | 2023-06-28 | Clark Equipment Co | Excavator Grapple Attachment |
CN113502866B (en) * | 2021-06-28 | 2022-10-04 | 中铁一局集团(广州)建设工程有限公司 | Tamping device for three-back backfilling |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3275172A (en) * | 1965-05-04 | 1966-09-27 | Wrex All Implements Inc | Wrecking and loading tool for use with a back hoe |
JPS5838049Y2 (en) * | 1979-02-17 | 1983-08-27 | 淳次 小川 | double-grip bucket |
US4375345A (en) * | 1981-07-23 | 1983-03-01 | J. I. Case Company | Clamping arm assembly for a backhoe |
JPH0637083Y2 (en) * | 1984-09-10 | 1994-09-28 | 株式会社エスケ− | Pavement asphalt peeling excavation bucket |
US4932832A (en) * | 1989-01-30 | 1990-06-12 | Mccasland Thomas A | Backhoe gripping attachment |
US5553408A (en) * | 1995-04-21 | 1996-09-10 | Townsend; Edward H. | Excavator bucket attachment |
US5678332A (en) * | 1996-06-24 | 1997-10-21 | Hawkins; Bobby Leonard | Changeable and retractable implement for use on a back hoe and method |
JPH11193544A (en) * | 1997-12-29 | 1999-07-21 | Iida Tekko:Kk | Gripping machine |
JPH11336114A (en) * | 1998-05-27 | 1999-12-07 | Hidetoshi Nakagawa | Fitting mechanism of attachment member to earth-moving machine such as power shovel |
JP2000027226A (en) * | 1998-07-15 | 2000-01-25 | Iida Tekko:Kk | Attachment for excavator |
US6203267B1 (en) * | 1999-08-03 | 2001-03-20 | Rockland Inc. | Material handling assembly for machines and thumb assembly thereof |
US6370801B1 (en) * | 1999-11-23 | 2002-04-16 | 1994 Weyer Family Limited Partnership | Hydraulic collection tool |
US7111419B1 (en) * | 2000-07-31 | 2006-09-26 | Rockland, Inc. | Thumb for a backhoe |
IES20010079A2 (en) * | 2001-01-31 | 2002-08-07 | Geith Patents Ltd | An adjustable mounting assembly for mounting a support stay of a clamp arm to a dipper arm of a back acter |
US6640471B2 (en) * | 2002-03-06 | 2003-11-04 | D&D Excavating & Drainage, Ltd. | Thumb for earth moving equipment |
-
2002
- 2002-12-23 AU AU2002368495A patent/AU2002368495A1/en not_active Abandoned
- 2002-12-23 WO PCT/IT2002/000822 patent/WO2004057114A1/en active IP Right Grant
- 2002-12-23 EP EP02808284A patent/EP1595033B1/en not_active Expired - Lifetime
- 2002-12-23 DE DE60228896T patent/DE60228896D1/en not_active Expired - Fee Related
- 2002-12-23 US US10/540,008 patent/US20060150446A1/en not_active Abandoned
- 2002-12-23 JP JP2004561970A patent/JP2006511740A/en not_active Ceased
- 2002-12-23 AT AT02808284T patent/ATE408042T1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DE60228896D1 (en) | 2008-10-23 |
WO2004057114A1 (en) | 2004-07-08 |
ATE408042T1 (en) | 2008-09-15 |
JP2006511740A (en) | 2006-04-06 |
US20060150446A1 (en) | 2006-07-13 |
AU2002368495A1 (en) | 2004-07-14 |
EP1595033A1 (en) | 2005-11-16 |
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