WO2002022966A1 - Digging apparatus - Google Patents
Digging apparatus Download PDFInfo
- Publication number
- WO2002022966A1 WO2002022966A1 PCT/GB2001/003985 GB0103985W WO0222966A1 WO 2002022966 A1 WO2002022966 A1 WO 2002022966A1 GB 0103985 W GB0103985 W GB 0103985W WO 0222966 A1 WO0222966 A1 WO 0222966A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- arm
- digging
- auger
- bucket
- digging apparatus
- Prior art date
Links
- 239000000463 material Substances 0.000 claims abstract description 26
- 241000030361 Girellinae Species 0.000 claims abstract description 6
- 238000005422 blasting Methods 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 101100328887 Caenorhabditis elegans col-34 gene Proteins 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000009969 flowable effect Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- E02F3/06—Dredgers; Soil-shifting machines mechanically-driven with digging screws
-
- 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
- E02F3/405—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 using vibrating means
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F7/00—Equipment for conveying or separating excavated material
- E02F7/02—Conveying equipment mounted on a dredger
- E02F7/026—Conveying equipment mounted on a dredger mounted on machines equipped with dipper- or bucket-arms
Definitions
- This invention relates to digging apparatus.
- the present invention seeks to provide a new and inventive form of digging apparatus.
- the present invention proposes digging apparatus which includes an arm mounted for movement in the direction of and below the surface of the ground, the arm having digging means at its lower end for use in cutting a trench in the ground, and in which the arm contains an auger for removing material from the vicinity of the digging means.
- the digging means could take the form of a bucket with transversely directed teeth, which can be used with a scooping action.
- the bucket can also be used for lifting material from the trench, e.g large rocks which might otherwise jam the auger. It is also preferred that the digging means incorporates a lateral opening in the side wall of the auger arm.
- the auger arm may be provided with a vibrator to assist in movement of material along the arm.
- the arm may also have a nibbler mounted part-way along its length.
- the digging means includes a bucket
- the bucket is preferably provided with opposed digging extensions for increasing the digging width.
- Material may be removed from the upper end of the auger arm by means of a chute, a conveyor or a transverse blasting duct.
- FIG. 1 is a general side view of an excavator in accordance with the invention which is provided with an auger arm;
- Figure 2 is a front view of part of the auger arm having a nibbler bar attachment
- Figure 3 is a front view of a bucket mounted at the lower end of the auger arm
- Figure 4 is a part-sectional view through a modified form of the auger arm
- Figures 5 and 6 are side and bottom views of a grab attachment for use with the auger arm.
- Figure 7 is a side view of another form of vehicle which is provided with an auger arm in accordance with the invention.
- Fig. 1 shows an excavator of the kind known as a "backhoe loader" which includes a tractor 1 having a first upwardly-inclined arm section 2 which can be moved about a vertical axis and a second arm section 3 which can be moved about a horizontal axis by an hydraulic ram 4.
- the second arm section 3 is coupled to a tubular auger arm 5, about 3 to 4 metres long, which is pivoted at 6 for movement about a horizontal axis by means of a ram 7.
- the arm 5 contains a screw auger 8 (e.g. 300mm to 350mm in diameter) which is driven by an hydraulic motor 9 mounted at the top of the arm 5.
- a digging bucket 10 is pivotally mounted at the bottom of the arm 5 for movement about a horizontal axis by a ram 11 acting between the rear of the bucket and a pivot mounting 12 on the auger arm.
- the bucket is of a conventional kind having an arcuate bottom wall, a rear wall and two opposed side walls with a set of digging teeth projecting forwardly from the bottom wall.
- a chute 15 At the top of the auger arm 5 material can be discharged via a chute 15, a conveyor, or similar means carried by the arm 5.
- a chute or conveyor could conveniently be hinged to the arm allowing it to be stowed against the arm when not in use.
- the chute or conveyor is preferably also mounted such that it can be swivelled to left or right for depositing excavated material on either side of the trench, either onto the ground or into a dumper truck etc.
- the arm 5 also contains a lateral opening 16 arranged such that when digging relatively shallow trenches, say up to 2 metres deep, material which is scooped out by the bucket 10 is continuously removed by the auger and discharged at the top of the arm. The speed of digging deeper trenches is also increased however. The material removed by the bucket can still be fed into the auger arm, but when the arm is full it can be raised to permit discharge of the material at a suitable level.
- the auger can be fitted to a conventional excavator between the arm 2, 3 and the bucket 10 or in place of the arm 3.
- the hydraulic motor 9 can be coupled up to the hydraulic lines which are normally present on the arm.
- the auger attachment considerably speeds up the task of digging a trench in reasonably good ground, typically a factor of two or three.
- the attachment can also reduce the cost of constructing short bore pile foundations.
- Such foundations include concrete piles joined by reinforced concrete ring beam.
- By removing the bucket 10 it is possible to form the trench and piles in one operation.
- Vertical movement of the auger arm 5 will allow vertical piles to be drilled, with material entering the arm through the bottom of the arm, but if the arm is raised to a suitable level and moved laterally a trench can be cut between the piles with material being removed via the side opening 16.
- the edges of the bottom and side openings can be provided with digging teeth or cutting blades as necessary.
- the auger arm 5 When trenches are cut in tarmac surfaces it is advantageous to provide the auger arm 5 with a nibbler bar 18 as shown in Fig. 2.
- the niggler bar takes the form of a vertical plate 19 having spaced, downwardly directed teeth 20.
- the nibbler bar 18 is mounted in the direction of digging so that when the auger arm moves vertically the teeth bite into the tarmac surface and break away small fragments in the direction of the trench. This considerably reduces the risk of inadvertently lifting large areas of tarmac during trenching.
- the bucket 10 can be adapted to dig trenches of different widths by adding bolt-on wings 22, 23, as show in Fig. 3. The wings are directed outwardly to increase the effective digging width of the bucket and thereby remove the need to change buckets.
- the auger arm can be provided with a vibrator to assist the movement of excavated material up the arm.
- An add-on vibrator can be used or the motor 9 could be modified to provide a vibratory action.
- movement of excavated material along the auger arm may be assisted by feeding compressed air or other gas into the arm 5.
- auger arm 5 it may be desirable to move the auger arm 5 independently of the excavator arm 2, 3. As shown in Fig. 4, this can be achieved by providing the arm with an external sleeve 26 to which the arm section 3 and ram 7 are attached. The auger arm 5 is moved relative to the sleeve by a further ram 27, or equivalent means such as an hydraulic motor having a drive gear working on a rack.
- the auger arm 5 can also be modified as shown in Fig.s 5 and 6.
- the bucket is replaced by a grab or clam attachment 30 having a pair of pivoted jaws 31 and 32 which are moved together by a ram 33. Again, material which is dug out by the jaws is carried up the arm by the auger 8.
- Fig. 7 shows the auger arm fitted to a caterpillar vehicle 40.
- the auger arm can be used for conventional trenching as described above it has also been modified for blasting. Instead of discharging via a chute or conveyor the top of the arm 5 is connected to a transverse duct 41 coupled to the outlet of a gas turbine 42.
- a safety valve 43 is provided to release excess pressure from the duct 41 should it become blocked by excavated material.
- Such a machine could, for example, be useful when excavating cable-laying trenches in remote areas, but it would also be useful in fighting forest fires by smothering the flames in excavated material. Material excavated from the earth poses less risk of creating steam clouds than using water jets.
- auger machines described above are very versatile. They can be used for trenches and general digging, piling probing and pit excavating, as well as for moving flowable solid, liquid or sludge materials. They also have potential application in fire fighting, concrete spraying, ground stabilisation etc.
Landscapes
- 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)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2001284280A AU2001284280A1 (en) | 2000-09-09 | 2001-09-06 | Digging apparatus |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0022173.9 | 2000-09-09 | ||
GB0022173A GB0022173D0 (en) | 2000-09-09 | 2000-09-09 | Digging apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002022966A1 true WO2002022966A1 (en) | 2002-03-21 |
Family
ID=9899172
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB2001/003985 WO2002022966A1 (en) | 2000-09-09 | 2001-09-06 | Digging apparatus |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU2001284280A1 (en) |
GB (1) | GB0022173D0 (en) |
WO (1) | WO2002022966A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006123948A2 (en) | 2005-05-16 | 2006-11-23 | Rocktec Limited | Improved hammer mounting |
GB2474695A (en) * | 2009-10-23 | 2011-04-27 | Hesco Bastion Ltd | Auger |
GB2477792A (en) * | 2010-02-15 | 2011-08-17 | Hesco Bastion Ltd | Auger |
CN108388109A (en) * | 2017-02-03 | 2018-08-10 | 淡水河谷公司 | Recycling machine control system and method |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS573931A (en) * | 1980-06-06 | 1982-01-09 | Taiho Kensetsu Kk | Soil and sand excavator |
DE3104116A1 (en) * | 1981-02-06 | 1982-09-02 | Gerhard Dücker KG Landmaschinenfabrik, 4424 Stadtlohn | Trench cutting machine |
US4669945A (en) * | 1986-03-26 | 1987-06-02 | J. I. Case Company | Foldable and swivelable hopper-loading screw conveyor |
US4864748A (en) * | 1988-01-29 | 1989-09-12 | Boyer, Inc. | Materials transport and distribution apparatus |
US5184715A (en) * | 1991-05-09 | 1993-02-09 | Core Industries, Inc. | Mechanical drive for dual conveyor system |
JPH0874288A (en) * | 1994-09-05 | 1996-03-19 | Hirose & Co Ltd | Earth and sand excavating and conveying device |
US6206249B1 (en) * | 1999-02-02 | 2001-03-27 | Damian L. Lang | Fluent material container and dispenser |
-
2000
- 2000-09-09 GB GB0022173A patent/GB0022173D0/en not_active Ceased
-
2001
- 2001-09-06 WO PCT/GB2001/003985 patent/WO2002022966A1/en active Application Filing
- 2001-09-06 AU AU2001284280A patent/AU2001284280A1/en not_active Abandoned
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS573931A (en) * | 1980-06-06 | 1982-01-09 | Taiho Kensetsu Kk | Soil and sand excavator |
DE3104116A1 (en) * | 1981-02-06 | 1982-09-02 | Gerhard Dücker KG Landmaschinenfabrik, 4424 Stadtlohn | Trench cutting machine |
US4669945A (en) * | 1986-03-26 | 1987-06-02 | J. I. Case Company | Foldable and swivelable hopper-loading screw conveyor |
US4864748A (en) * | 1988-01-29 | 1989-09-12 | Boyer, Inc. | Materials transport and distribution apparatus |
US5184715A (en) * | 1991-05-09 | 1993-02-09 | Core Industries, Inc. | Mechanical drive for dual conveyor system |
JPH0874288A (en) * | 1994-09-05 | 1996-03-19 | Hirose & Co Ltd | Earth and sand excavating and conveying device |
US6206249B1 (en) * | 1999-02-02 | 2001-03-27 | Damian L. Lang | Fluent material container and dispenser |
Non-Patent Citations (2)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 006, no. 061 (M - 123) 20 April 1982 (1982-04-20) * |
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 07 31 July 1996 (1996-07-31) * |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006123948A2 (en) | 2005-05-16 | 2006-11-23 | Rocktec Limited | Improved hammer mounting |
GB2474695A (en) * | 2009-10-23 | 2011-04-27 | Hesco Bastion Ltd | Auger |
GB2477792A (en) * | 2010-02-15 | 2011-08-17 | Hesco Bastion Ltd | Auger |
GB2477792B (en) * | 2010-02-15 | 2012-02-15 | Hesco Bastion Ltd | Auger and method |
CN108388109A (en) * | 2017-02-03 | 2018-08-10 | 淡水河谷公司 | Recycling machine control system and method |
Also Published As
Publication number | Publication date |
---|---|
AU2001284280A1 (en) | 2002-03-26 |
GB0022173D0 (en) | 2000-10-25 |
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