EP2431537A1 - Excavator stabilisers - Google Patents
Excavator stabilisers Download PDFInfo
- Publication number
- EP2431537A1 EP2431537A1 EP11275112A EP11275112A EP2431537A1 EP 2431537 A1 EP2431537 A1 EP 2431537A1 EP 11275112 A EP11275112 A EP 11275112A EP 11275112 A EP11275112 A EP 11275112A EP 2431537 A1 EP2431537 A1 EP 2431537A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- blade
- stabilisers
- pair
- arm
- excavator
- 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.)
- Withdrawn
Links
- 239000003381 stabilizer Substances 0.000 title claims abstract description 54
- 239000013536 elastomeric material Substances 0.000 claims description 5
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 230000000284 resting effect Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000003019 stabilising 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
- E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
- E02F3/80—Component parts
- E02F3/815—Blades; Levelling or scarifying tools
- E02F3/8157—Shock absorbers; Supports, e.g. skids, rollers; Devices for compensating wear-and-tear, 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
- E02F3/96—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements
- E02F3/963—Arrangements on backhoes for alternate use of different tools
- E02F3/964—Arrangements on backhoes for alternate use of different tools of several tools mounted on one machine
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/08—Superstructures; Supports for superstructures
- E02F9/085—Ground-engaging fitting for supporting the machines while working, e.g. outriggers, legs
Definitions
- This invention relates to mechanical diggers or excavators of the type having a movably mounted digger arm at one end, the arm having a tool-carrying end for carrying e.g. an excavation bucket, and a movably mounted elongated blade at the other end of the excavator to be lowered from a raised position to a ground level position for either pushing removed material such as sand and gravel in a direction away from the tool carrying end for e.g. flattening the ground, or operable in a ground engaging mode to stabilise the excavator during use of the digger arm and associated bucket.
- the present invention is derived from the realisation that there is a need for a solution to the foregoing problems that can be easily fixed in place and, when so fixed, permits the operator of the excavator to raise and lower the blade as required for moving the excavator from one position to another, without compromising the stability otherwise available by the use of the underside of the blade for this purpose.
- a pair of stabilisers for respectively opposite ends of a moveable elongate blade of a mechanical excavator of the type having a moveably mounted digger arm remote from the moveable blade and a tool-carrying end for carrying e.g.
- the stabilisers each comprising or including a blade engaging portion adapted to be releasably secured onto or into a respective end of the blade, the blade engaging portion supporting an end structure, and a resiliently deformable foot portion forming part of the end structure, the foot portion being adapted to, in use, and in combination with the corresponding foot portion of the other stabiliser, prevent the lowermost edge of the blade from touching the ground when the blade is lowered theretowards.
- the stabilisers may be secured to respective ends of the blade in any convenient manner but, when so secured, the excavator is therefore converted for use on e.g. roads or pavements without any risk of the blade damaging the surface when it is lowered theretowards in order to stabilise the excavator.
- a stabiliser in accordance with the invention may be used instead, with the stabiliser arm being inserted into the tubular opening up to a required limit, which may be variable, and then secured in position, with a corresponding stabiliser being secured on the other end of the blade.
- the blade engaging portion is an arm adapted to be releasably secured onto or into a respective end of the blade, and the end structure is a leg, in which the resiliently deformable foot portion forms part of the leg.
- the leg may be of a length greater than the lowermost edge of the blade when the stabiliser arm is fitted thereto. Stabilisers of this type are particularly suited for use with relatively lightweight mechanical diggers or excavators such as 1.5 tonne devices.
- each stabiliser is mounted on the arm transverse to it, and each leg is symmetrical about the major axis of the arm and having a foot portion on each end, thereby to ensure that when the stabiliser is fitted to the blade in either orientation the lowermost edge of the blade cannot be grounded.
- the blade engaging portion includes an elongate portion for insertion into a tubular part of the blade and securing thereto, for example with a pin which is inserted into an aperture formed in the elongate portion.
- the end structure may include a bracket adapted to be secured against the underside of the blade, the deformable foot portion forming part of the bracket.
- each stabiliser is formed in two or more pieces, in which a first piece includes the elongate portion and a second piece includes the bracket, the first and second pieces being releasably coupleable, either directly or indirectly.
- the blade engaging portion may include an end fixing structure for positioning against one end of the blade, in which the elongate portion extends from the end fixing structure.
- the blade engaging portion may further include a bracket engaging elongate portion which extends from the end fixing structure and is releasably coupleable with a receiving portion on the bracket which receives the bracket engaging elongate portion.
- Embodiments of this type are particularly advantageous with relatively large mechanical diggers or excavators, such as diggers or excavators of greater than 1.5 tonnes weight.
- the or each foot portion is made of an elastomeric material and is replaceable so that as the elastomeric material wears out through continuous use the foot portion can simply be replaced.
- a method of preventing damage to a ground surface on which a mechanical excavator of the type described is resting including the steps of fitting a respectively opposite pair of stabilisers to the ends of the excavator blade when in its raised condition, and thereafter lowering the blade until the foot portions of the pair of stabilisers contact the ground, and thereafter commencing work with the moveably mounted digger arm and associated tools.
- FIG. 1 is a perspective view of the rear and one side of a mechanical excavator shown generally at 1 comprising an operator cab 2 swivelably mounted on a tracked chassis 3 and having at its forward end a moveably mounted digger arm 4. At the free end of the digger arm 4 is a tool-carrying end 5 for, typically, carrying an excavation bucket 6, which may be of variable size.
- a stabiliser blade 7 which can be raised and lowered as required to either push loose material such as sand and gravel for the purposes of levelling it, or to act instead as a stabiliser when the digger arm 4 is in use.
- the lowermost edge 7a of the blade 7 is normally pressed into the ground so as to stabilise the rest of the excavator 1 when the digger arm 4 is in use.
- the blade 7 is in some respects of hollow construction to the extent that sockets 8 may be provided at both ends for the purposes of e.g. fitting extension blades (not shown) so as to widen the overall length of the blade 7.
- each stabiliser 9 comprises a generally channel-shaped arm 10 for fitting into the socket 8, the arm 10 also including a through bore 11 positioned to align with corresponding bores (not shown) within the socket 8 and into which a retaining pin may be inserted to releasably secure the arm 10 within the socket 8.
- the arm 10 is fixed to a leg 12 mounted transverse to it, on each end of which is a foot portion 13 with an elastomeric outer layer 14.
- the leg 12 is symmetrical relative to the major axis of the arm 10 so that, whether used on one side or the other of the blade 7, the spacing between the major plane of the arm 10 and each foot 13 remains the same. This spacing is greater than the distance between the major axis of the arm 10 and the lowermost edge 7a of the blade 7 so that, when the stabilisers 9 are fitted to respective ends of the blade 7 it can never engage with the ground. In this condition, when the blade 7 is lowered the feet 13 and hence elastomeric pads 14 engage the ground instead, thus preventing any damage to the surface. In addition, the effective length of the stabiliser blade 7 is increased, such that overall stability for the excavator 1 is correspondingly increased.
- the invention therefore provides an elegantly simple solution to a potentially serious problem by using existing formations or recesses in the blade 7 for the purpose of ensuring that when it is to be used as a stabiliser on hard ground it can be easily prevented from causing damage thereto without compromising the safety of the operator.
- Figures 3 and 4 show a second embodiment of a stabiliser which is particularly useful for fitting to larger excavator devices up to and including 8 tonne excavators.
- the stabiliser of the second embodiment is in two-part form.
- Figure 3 shows a bracket, depicted generally at 30, and
- Figure 4 shows an end fixing plate, depicted generally at 40, which, in use, is coupled to the bracket 30.
- the bracket 30 comprises a main body portion 31 generally of triangular cross-sectional shape which is fitted underneath the blade.
- a plate 32 is upstanding from the body portion 31 so as to be locatable at the rear of the blade.
- the plate 32 upstands from a rear wall 31 a of the body portion 31.
- an elongate socket 33 is also in connection with the rear wall 31 a.
- the body portion 31 also comprises an upstanding front lip 31 b which locates against the lower front edge of the blade.
- a foot portion 34 is attached to a lower portion 31 c of the body portion 31 by any convenient means, such as via screws, bolts or other fixing elements.
- the foot portion 13 is formed from a suitable resiliently deformable material such as nylon or an elastomer.
- the end fixing plate 40 comprises a main plate 41 which may be shaped so as to generally conform with the shape of the end of the blade.
- a locating piece 42 is positioned at the front of the end fixing plate 40 so as to locate on the front end of the blade.
- the end fixing plate 40 further comprises first and second elongate portions 43, 44 which extend inwardly from an inner surface of the plate 41.
- the first elongate portion 43 extends from near to the top of the plate 41, and in use is disposed in the socket of the blade.
- the first elongate portion 43 has a through bore 43a which is positioned to align with corresponding bores within the socket of the blade, thereby permitting the end fixing plate 40 to be releasably secured to the blade via a pin in a manner substantially identical to that described earlier in relation to the first embodiment.
- the second elongate portion 44 is disposed near to the bottom of the plate 41, and is sized and positioned so as to be received in an inner bore 33a formed in the socket 33.
- the second elongate portion has a through bore 44a for receiving a pin which also extends through a bore formed in the socket 33 (not shown).
- the bracket 30 can be releasably secured to the end fixing plate 40, which in turn is releasably secured to the blade 7.
- the plate 32, socket 33 and locating piece 42 may be conveniently welded into place.
- At least part of the main portion 31 of the bracket 30 can be conveniently and advantageously formed by appropriate folding of a metal plate into shape.
- the lower portion 31 c of the main portion 31 may be reinforced with another plate. Alternatively, the lower portion 31 c may be formed from a separate base plate which may be folded to produce the lip 31 b.
- the end fixing plate 40 may be formed in adjustable multiple parts, or may be otherwise adjustable so as to facilitate positioning against blades of different sizes and shapes.
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
According to the invention there is provided in combination a pair of stabilisers for respectively opposite ends of a moveable elongate blade of a mechanical excavator of the type having a moveably mounted digger arm remote from the moveable blade and a tool-carrying end for carrying e.g. an excavator bucket on the end of the arm, the stabilisers each comprising or including a blade engaging portion adapted to be releasably secured onto or into a respective end of the blade, the blade engaging portion supporting an end structure, and a resiliently deformable foot portion forming part of the end structure, the foot portion being adapted to, in use, and in combination with the corresponding foot portion of the other stabiliser, prevent the lowermost edge of the blade from touching the ground when the blade is lowered theretowards.
Description
- This invention relates to mechanical diggers or excavators of the type having a movably mounted digger arm at one end, the arm having a tool-carrying end for carrying e.g. an excavation bucket, and a movably mounted elongated blade at the other end of the excavator to be lowered from a raised position to a ground level position for either pushing removed material such as sand and gravel in a direction away from the tool carrying end for e.g. flattening the ground, or operable in a ground engaging mode to stabilise the excavator during use of the digger arm and associated bucket. When operated in this latter mode it is usually necessary to ensure that the blade is lowered slightly beyond the plane of the ground on which the excavator is standing, thereby slightly raising that part of the body of the excavator such that the point of greatest weight is as far as possible away from the tool-carrying end of the digger arm, to thereby maximise the stability of the excavator for e.g. subsequently digging a trench.
- The foregoing scenario for stabilising an excavator will inevitably leave a mark corresponding to the underside of the blade which, on soft ground, is not particularly problematic since it can be subsequently smoothed over. However, where the excavator is to be used on hard surfaces, such as roads, pavements and patios, the mark left by the underside of the blade can be very unsightly and can also cause unwanted damage, leading to penalties being imposed on e.g. utility companies by Local Councils. An obvious way of avoiding such problems is by putting wooden chocks or rubber tyres underneath the blade to ensure that it never touches the hard surface, but this has Health & Safety implications for the operator of the excavator, and it is also time consuming and tedious to reposition such objects every time the excavator is to be moved.
- The present invention is derived from the realisation that there is a need for a solution to the foregoing problems that can be easily fixed in place and, when so fixed, permits the operator of the excavator to raise and lower the blade as required for moving the excavator from one position to another, without compromising the stability otherwise available by the use of the underside of the blade for this purpose.
- According to a first aspect of the invention there is provided in combination a pair of stabilisers for respectively opposite ends of a moveable elongate blade of a mechanical excavator of the type having a moveably mounted digger arm remote from the moveable blade and a tool-carrying end for carrying e.g. an excavator bucket on the end of the arm, the stabilisers each comprising or including a blade engaging portion adapted to be releasably secured onto or into a respective end of the blade, the blade engaging portion supporting an end structure, and a resiliently deformable foot portion forming part of the end structure, the foot portion being adapted to, in use, and in combination with the corresponding foot portion of the other stabiliser, prevent the lowermost edge of the blade from touching the ground when the blade is lowered theretowards.
- With this arrangement the stabilisers may be secured to respective ends of the blade in any convenient manner but, when so secured, the excavator is therefore converted for use on e.g. roads or pavements without any risk of the blade damaging the surface when it is lowered theretowards in order to stabilise the excavator.
- Conveniently, where the excavator is of the type having an elongated blade adapted to receive extension pieces at each end, the extension pieces being slotted into an upper, tubular, part of the blade and thereafter secured in place with a pin, a stabiliser in accordance with the invention may be used instead, with the stabiliser arm being inserted into the tubular opening up to a required limit, which may be variable, and then secured in position, with a corresponding stabiliser being secured on the other end of the blade.
- In one embodiment, the blade engaging portion is an arm adapted to be releasably secured onto or into a respective end of the blade, and the end structure is a leg, in which the resiliently deformable foot portion forms part of the leg. The leg may be of a length greater than the lowermost edge of the blade when the stabiliser arm is fitted thereto. Stabilisers of this type are particularly suited for use with relatively lightweight mechanical diggers or excavators such as 1.5 tonne devices.
- Advantageously, the leg of each stabiliser is mounted on the arm transverse to it, and each leg is symmetrical about the major axis of the arm and having a foot portion on each end, thereby to ensure that when the stabiliser is fitted to the blade in either orientation the lowermost edge of the blade cannot be grounded.
- In further embodiments, the blade engaging portion includes an elongate portion for insertion into a tubular part of the blade and securing thereto, for example with a pin which is inserted into an aperture formed in the elongate portion. The end structure may include a bracket adapted to be secured against the underside of the blade, the deformable foot portion forming part of the bracket.
- Advantageously, each stabiliser is formed in two or more pieces, in which a first piece includes the elongate portion and a second piece includes the bracket, the first and second pieces being releasably coupleable, either directly or indirectly. In these embodiments, the blade engaging portion may include an end fixing structure for positioning against one end of the blade, in which the elongate portion extends from the end fixing structure. The blade engaging portion may further include a bracket engaging elongate portion which extends from the end fixing structure and is releasably coupleable with a receiving portion on the bracket which receives the bracket engaging elongate portion. Embodiments of this type are particularly advantageous with relatively large mechanical diggers or excavators, such as diggers or excavators of greater than 1.5 tonnes weight.
- Conveniently, the or each foot portion is made of an elastomeric material and is replaceable so that as the elastomeric material wears out through continuous use the foot portion can simply be replaced.
- According to a second aspect of the invention there is provided a method of preventing damage to a ground surface on which a mechanical excavator of the type described is resting, including the steps of fitting a respectively opposite pair of stabilisers to the ends of the excavator blade when in its raised condition, and thereafter lowering the blade until the foot portions of the pair of stabilisers contact the ground, and thereafter commencing work with the moveably mounted digger arm and associated tools.
- The invention will now be described, by way of example only, with reference to the accompanying drawings in which:
-
Figure 1 is a perspective view of the rear and one side of a mechanical excavator; -
Figure 2 shows a first embodiment of a stabiliser; -
Figure 3 shows (a) an end view and (b) a rear view of a bracket of a second embodiment of a stabiliser; and -
Figure 4 shows (a) an end view and (b) a rear view of an end fixing plate of the second embodiment of the stabiliser. -
Figure 1 is a perspective view of the rear and one side of a mechanical excavator shown generally at 1 comprising an operator cab 2 swivelably mounted on a trackedchassis 3 and having at its forward end a moveably mounteddigger arm 4. At the free end of thedigger arm 4 is a tool-carryingend 5 for, typically, carrying an excavation bucket 6, which may be of variable size. - At the other end of the
excavator 1 is a stabiliser blade 7 which can be raised and lowered as required to either push loose material such as sand and gravel for the purposes of levelling it, or to act instead as a stabiliser when thedigger arm 4 is in use. In such latter configuration, thelowermost edge 7a of the blade 7 is normally pressed into the ground so as to stabilise the rest of theexcavator 1 when thedigger arm 4 is in use. As is well known, the blade 7 is in some respects of hollow construction to the extent thatsockets 8 may be provided at both ends for the purposes of e.g. fitting extension blades (not shown) so as to widen the overall length of the blade 7. However, whether or not extension pieces to the blade 7 are attached it will be understood that when thelowermost edge 7a of the blade 7 is in contact with hard surfaces such as roads and pavements there is a danger of causing damage thereto, and this problem is addressed in accordance with this embodiment of the invention by the use of generally 'T'-shaped stabilisers 9 inserted withinrespective sockets 8 at each end of the blade 7. As is shown more clearly with reference toFigure 2 eachstabiliser 9 comprises a generally channel-shaped arm 10 for fitting into thesocket 8, thearm 10 also including a throughbore 11 positioned to align with corresponding bores (not shown) within thesocket 8 and into which a retaining pin may be inserted to releasably secure thearm 10 within thesocket 8. - The
arm 10 is fixed to aleg 12 mounted transverse to it, on each end of which is afoot portion 13 with an elastomericouter layer 14. Theleg 12 is symmetrical relative to the major axis of thearm 10 so that, whether used on one side or the other of the blade 7, the spacing between the major plane of thearm 10 and eachfoot 13 remains the same. This spacing is greater than the distance between the major axis of thearm 10 and thelowermost edge 7a of the blade 7 so that, when thestabilisers 9 are fitted to respective ends of the blade 7 it can never engage with the ground. In this condition, when the blade 7 is lowered thefeet 13 and henceelastomeric pads 14 engage the ground instead, thus preventing any damage to the surface. In addition, the effective length of the stabiliser blade 7 is increased, such that overall stability for theexcavator 1 is correspondingly increased. - When the
excavator 1 has to be moved to a new working position it is simply necessary for the blade 7 to be raised and then lowered again in the new working position without the need for the operator of the excavator to leave the cab 2 and provide alternative means of ensuring that thelower edge 7a of the blade 7 does not come into contact with the ground. The invention therefore provides an elegantly simple solution to a potentially serious problem by using existing formations or recesses in the blade 7 for the purpose of ensuring that when it is to be used as a stabiliser on hard ground it can be easily prevented from causing damage thereto without compromising the safety of the operator. -
Figures 3 and 4 show a second embodiment of a stabiliser which is particularly useful for fitting to larger excavator devices up to and including 8 tonne excavators. The stabiliser of the second embodiment is in two-part form.Figure 3 shows a bracket, depicted generally at 30, andFigure 4 shows an end fixing plate, depicted generally at 40, which, in use, is coupled to thebracket 30. Thebracket 30 comprises amain body portion 31 generally of triangular cross-sectional shape which is fitted underneath the blade. Aplate 32 is upstanding from thebody portion 31 so as to be locatable at the rear of the blade. Theplate 32 upstands from arear wall 31 a of thebody portion 31. Also in connection with therear wall 31 a is anelongate socket 33. Thebody portion 31 also comprises an upstandingfront lip 31 b which locates against the lower front edge of the blade. Afoot portion 34 is attached to alower portion 31 c of thebody portion 31 by any convenient means, such as via screws, bolts or other fixing elements. Thefoot portion 13 is formed from a suitable resiliently deformable material such as nylon or an elastomer. Theend fixing plate 40 comprises amain plate 41 which may be shaped so as to generally conform with the shape of the end of the blade. A locatingpiece 42 is positioned at the front of theend fixing plate 40 so as to locate on the front end of the blade. Theend fixing plate 40 further comprises first and secondelongate portions plate 41. It is understood that the terms 'inwardly' and 'inner' refer to the end fixing plate when fitted to the end of the blade. The firstelongate portion 43 extends from near to the top of theplate 41, and in use is disposed in the socket of the blade. The firstelongate portion 43 has athrough bore 43a which is positioned to align with corresponding bores within the socket of the blade, thereby permitting theend fixing plate 40 to be releasably secured to the blade via a pin in a manner substantially identical to that described earlier in relation to the first embodiment. The secondelongate portion 44 is disposed near to the bottom of theplate 41, and is sized and positioned so as to be received in aninner bore 33a formed in thesocket 33. The second elongate portion has athrough bore 44a for receiving a pin which also extends through a bore formed in the socket 33 (not shown). In this way, thebracket 30 can be releasably secured to theend fixing plate 40, which in turn is releasably secured to the blade 7. Theplate 32,socket 33 and locatingpiece 42 may be conveniently welded into place. At least part of themain portion 31 of thebracket 30 can be conveniently and advantageously formed by appropriate folding of a metal plate into shape. Thelower portion 31 c of themain portion 31 may be reinforced with another plate. Alternatively, thelower portion 31 c may be formed from a separate base plate which may be folded to produce thelip 31 b. Theend fixing plate 40 may be formed in adjustable multiple parts, or may be otherwise adjustable so as to facilitate positioning against blades of different sizes and shapes.
Claims (14)
- In combination a pair of stabilisers for respectively opposite ends of a moveable elongate blade of a mechanical excavator of the type having a moveably mounted digger arm remote from the moveable blade and a tool-carrying end for carrying e.g. an excavator bucket on the end of the arm, the stabilisers each comprising or including a blade engaging portion adapted to be releasably secured onto or into a respective end of the blade, the blade engaging portion supporting an end structure, and a resiliently deformable foot portion forming part of the end structure, the foot portion being adapted to, in use, and in combination with the corresponding foot portion of the other stabiliser, prevent the lowermost edge of the blade from touching the ground when the blade is lowered theretowards.
- A pair of stabilisers according to claim 1 in which the blade engaging portion is an arm adapted to be releasably secured onto or into a respective end of the blade and the end structure is a leg, in which the resiliently deformable foot portion forms part of the leg.
- A pair of stabilisers according to claim 2 in which the leg is of a length greater than the lowermost edge of the blade when the stabiliser arm is fitted thereto.
- A pair of stabilisers according to claim 2 or claim 3 in which the leg of each stabiliser is transversely mounted on the arm, and each leg is symmetrical about the major axis of the arm and has a foot portion on each end, thereby to ensure that when the stabiliser is fitted to the blade in either orientation the lowermost edge of the blade cannot be grounded.
- A pair of stabilisers according to any previous claim in which the blade engaging portion includes an elongate portion for insertion into a tubular part of the blade and securing thereto.
- A pair of stabilisers according to claim 5 wherein each stabiliser further includes a pin which can be inserted into an aperture formed in the elongate portion to secure the elongate portion to the blade.
- A pair of stabilisers according to any previous claim in which the end structure includes a bracket adapted to be secured against the underside of the blade, the deformable foot portion forming part of the bracket.
- A pair of stabilisers according to claim 7 wherein each stabiliser is formed in two or more pieces, in which a first piece includes the elongate portion and a second piece includes the bracket, the first and second pieces being releasably coupleable, either directly or indirectly.
- A pair of stabilisers according to claim 8 in which the blade engaging portion includes an end fixing structure for positioning against one end of the blade, in which the elongate portion extends from the end fixing structure.
- A pair of stabilisers according to claim 9 in which the blade engaging portion further includes a bracket engaging elongate portion which extends from the end fixing structure and is releasably coupleable with a receiving portion on the bracket which receives the bracket engaging elongate portion.
- A pair of stabilisers according to any previous claim in which each foot portion is made of an elastomeric material.
- A pair of stabilisers according to claim 11 in which the elastomeric material is replaceable so that as the elastomeric material wears out the foot portion can be replaced.
- A method of preventing damage to a ground surface on which a mechanical excavator is resting, the mechanical excavator being of the type having a moveable elongate blade, a moveably mounted digger arm remote from the moveable blade and a tool-carrying end for carrying e.g. an excavator bucket on the end of the arm, including the steps of fitting a respectively opposite pair of stabilisers to the ends of the excavator blade, lowering the blade until the foot portions of the pair of stabilisers contact the ground, and thereafter commencing work with the moveably mounted digger arm and associated tools.
- A mechanical excavator of the type having a moveably elongate blade, a moveably mounted digger arm remote from the moveable blade, and a tool-carrying end for carrying e.g. an excavator bucket on the end of the arm, the mechanical excavator further comprising a pair of stabilisers, in which the stabilisers each comprise or include a blade engaging portion which is releasably secured onto or into a respective end of the blade, the blade engaging portion supporting an end structure, and a resiliently deformable foot portion forming part of the end structure, the foot portion in combination with the corresponding foot portion of the other stabiliser preventing the lowermost edge of the blade from touching the ground when the blade is lowered theretowards.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB1015372.4A GB201015372D0 (en) | 2010-09-15 | 2010-09-15 | Excavator stabilisers |
GB1113832A GB2480567A (en) | 2010-09-15 | 2011-08-11 | Excavator stabilisers attached to a moveable blade |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2431537A1 true EP2431537A1 (en) | 2012-03-21 |
Family
ID=43065227
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11275112A Withdrawn EP2431537A1 (en) | 2010-09-15 | 2011-09-14 | Excavator stabilisers |
Country Status (2)
Country | Link |
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EP (1) | EP2431537A1 (en) |
GB (2) | GB201015372D0 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2498182B (en) * | 2011-12-30 | 2015-03-25 | Caterpillar Inc | Wear pad assembly |
Citations (6)
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---|---|---|---|---|
JPH02292419A (en) * | 1989-04-28 | 1990-12-03 | Yutani Heavy Ind Ltd | Small-sized excavator |
JPH0731960U (en) * | 1993-11-19 | 1995-06-16 | セイレイ工業株式会社 | Excavator structure of excavator |
US5431443A (en) * | 1993-08-04 | 1995-07-11 | Steyr-Daimler-Puch Ag | Supporting device for a rescue vehicle |
US6386586B1 (en) * | 2000-06-28 | 2002-05-14 | Tuff Industries, Inc. | Mobile equipment stabilizer foot pad |
EP1635002A1 (en) * | 2004-09-10 | 2006-03-15 | Caterpillar Inc. | Backhoe/Loader bucket support structure |
JP2006103627A (en) * | 2004-10-08 | 2006-04-20 | Yanmar Co Ltd | Outrigger mounting mechanism of working machine |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE20117775U1 (en) * | 2001-10-31 | 2003-03-20 | Liebherr-Hydraulikbagger GmbH, 88457 Kirchdorf | Dozer blade for construction machines |
-
2010
- 2010-09-15 GB GBGB1015372.4A patent/GB201015372D0/en not_active Ceased
-
2011
- 2011-08-11 GB GB1113832A patent/GB2480567A/en not_active Withdrawn
- 2011-09-14 EP EP11275112A patent/EP2431537A1/en not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02292419A (en) * | 1989-04-28 | 1990-12-03 | Yutani Heavy Ind Ltd | Small-sized excavator |
US5431443A (en) * | 1993-08-04 | 1995-07-11 | Steyr-Daimler-Puch Ag | Supporting device for a rescue vehicle |
JPH0731960U (en) * | 1993-11-19 | 1995-06-16 | セイレイ工業株式会社 | Excavator structure of excavator |
US6386586B1 (en) * | 2000-06-28 | 2002-05-14 | Tuff Industries, Inc. | Mobile equipment stabilizer foot pad |
EP1635002A1 (en) * | 2004-09-10 | 2006-03-15 | Caterpillar Inc. | Backhoe/Loader bucket support structure |
JP2006103627A (en) * | 2004-10-08 | 2006-04-20 | Yanmar Co Ltd | Outrigger mounting mechanism of working machine |
Also Published As
Publication number | Publication date |
---|---|
GB201015372D0 (en) | 2010-10-27 |
GB2480567A (en) | 2011-11-23 |
GB201113832D0 (en) | 2011-09-28 |
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