WO1995035418A1 - Concrete demolisher - Google Patents

Concrete demolisher Download PDF

Info

Publication number
WO1995035418A1
WO1995035418A1 PCT/SE1995/000745 SE9500745W WO9535418A1 WO 1995035418 A1 WO1995035418 A1 WO 1995035418A1 SE 9500745 W SE9500745 W SE 9500745W WO 9535418 A1 WO9535418 A1 WO 9535418A1
Authority
WO
WIPO (PCT)
Prior art keywords
demolisher
legs
carrier
demolishers
bracket
Prior art date
Application number
PCT/SE1995/000745
Other languages
French (fr)
Inventor
Bertil Borg
Hedvig Szarka
Original Assignee
Fambo Sweden Ab
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fambo Sweden Ab filed Critical Fambo Sweden Ab
Priority to AU27603/95A priority Critical patent/AU2760395A/en
Publication of WO1995035418A1 publication Critical patent/WO1995035418A1/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3677—Devices to connect tools to arms, booms or the like allowing movement, e.g. rotation or translation, of the tool around or along another axis as the movement implied by the boom or arms, e.g. for tilting buckets
    • E02F3/3681—Rotators
    • 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
    • E02F3/965—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements of metal-cutting or concrete-crushing implements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00—Working measures on existing buildings
    • E04G23/08—Wrecking of buildings
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00—Working measures on existing buildings
    • E04G23/08—Wrecking of buildings
    • E04G23/082—Wrecking of buildings using shears, breakers, jaws and the like
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00—Working measures on existing buildings
    • E04G23/08—Wrecking of buildings
    • E04G2023/086—Wrecking of buildings of tanks, reservoirs or the like

Definitions

  • the present invention relates to a device at tear down demolishers, concrete and scrap demolishers, which in a starting position are pivotally mounted in their length direction on tool carriers, mainly excavators, in order to make it possible to manoeuver, such as to grip and demolish material, by connection to the hydraulic system of the tool carrier.
  • Such demolishing tools though having a pivoting pos- sibility, are always to be seen as accessory equipment for tool carriers, such as excavators, and is often supplied from manufacturers that have only adapted the fastener of its demolishing equipment to the tool holder of the tool carrier.
  • problems both with regard to durability and to stability will arise, which problems may have immediate consequences both in break downs and in the long run due to that the details of the tool carrier are subjected to loads which they are not dimensioned for.
  • a demolisher equipment of the above mentioned kind pinches an object which is not in line with the arm of the tool carrier, special problems will arise.
  • large bending moments are applied on the tool carrier, which even may be dangerous when the force of the demolisher gives a torque in the transverse direction of the tool carrier, in which direction the stability of the tool carrier does not limit the forces on the equipment.
  • the object of the present invention is to provide an equipment with which the problems described above and asso- ciated therewith are solved.
  • the demolisher is comple ⁇ tely self-adjusting as a consequence of that the hydraulic force necessary to manoeuver the legs of the demolisher, pivotally journalled in a bracket, emanates from a coupling between the legs of the demolisher at the same time as the legs of the demolisher together with the pressure cylin ⁇ der/cylinders acting on these are journalled in at least one common attachment point in the bracket.
  • Fig. 1 is a side view of a known concrete demolisher construction, which through its construction gives both torque and bending moment on the tool carrier,
  • Fig. 2 is another side view of a known concrete de ⁇ molisher, having a pivotal connection between the tool carrier and the demolisher in order to eliminate the reac ⁇ tion force from the torque
  • Fig. 3 is a top view schematically showing an excava ⁇ tor as a tool carrier and the action from the bending moment which appears as a consequence of the grip of the demolisher
  • Fig. 4 is a view corresponding to Fig. 3, though with a demolisher according to the invention.
  • Fig. 5 more in detail shows the construction of and the mobility of a demolisher according to the invention
  • Fig. 6 shows further details of preferred embodiments of the invention
  • Fig. 7 shows an alternative embodiment of a demo ⁇ lisher according to the invention.
  • Fig. 1 shows how a demolisher of a known kind works.
  • One of the legs 1 of the demolisher which at the same time constitutes a foundation for attachment to a tool carrier 2, is made to grip around an object in that another leg 3 is pivoted around a pivot point on the leg 1 and is actua ⁇ ted by a hydraulic cylinder operating from the foundation.
  • a construction of this kind both a bending moment and a torque from the demolisher are obtained and are directly transferred to the tool carrier 2 with the resulting pro ⁇ blem recited above.
  • Fig. 2 shows a construction which prevents the appea ⁇ rance of a torque when gripping and/or cutting an object. This is obtained in that both the legs 1 and 3 are mounted on a carrier 4, which in turn is pivotably arranged on a mounting bracket, which in its turn is fastened to the tool carrier 2 in a conventional manner (not shown) .
  • Fig. 3 is only intended to show (somewhat exaggerated) how a demo- lisher construction according to Fig. 2 effects the tool carrier 2 when a bending moment arises.
  • Fig. 4 schematically shows an embodiment of the in ⁇ vention and how such a demolisher trough its self-adjusting function uses said bending moment for turning the legs of the demolisher until an equilibrium at a bending moment which approximately is equal to zero arises.
  • the demolisher according to Fig. 4 is shown more in detail in Fig. 5 where it is more evident how the legs of the demolisher are pivotably journalled in one and the same point 5 on a carrier 4a.
  • the legs of the demolisher are furthermore connected to each other by a double acting hyd ⁇ raulic cylinder 6 which is connected to the hydraulic sys ⁇ tem of the tool carrier 2 and performs the gripping and/or demolishing work to be done.
  • the carrier 4a in a way known per se is pivotally arranged on the tool carrier 2.
  • the pos ⁇ sible end positions for the respective legs are shown with dash-dotted lines.
  • Fig. 6 shows an arrangement which is substantially analogous to the one shown in Fig. 5 but on which a couple of other qualities have been added.
  • a hydraulically manoeu- vered locking cylinder 9 may if required lock the leg 2 to the carrier 4, whereby, however, the positive feature with bending moment equalization will disappear.
  • each demolisher leg 1 and 2 has been provided with a shoulder 12 which stops pivoting of the legs into angles that only make the demolisher difficult to handle.
  • Fig. 7 shows last but not least an embodiment of a demolisher in which two hydraulic cylinders 6 are used instead of only one.
  • the hydraulic cylinders 6 act between a couple of legs 3 arranged in front of each other and a distance piece 10 which is freely pivotally journalled on a carrier 4a as in the embodiments described above.
  • the arrangement according to Fig. 7 gives a better control and of course a greater potential force when gripping/cutting than the earlier described embodi ⁇ ments.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Mining & Mineral Resources (AREA)
  • General Engineering & Computer Science (AREA)
  • Working Measures On Existing Buildindgs (AREA)

Abstract

Device at tear down demolishers, concrete and scrap demolishers, which in a starting position is pivotally mounted in its length direction on carriers (2), mainly excavators, in order to make it possible to maneuver, such as to grip and demolish material, by connection to the hydraulic system of the tool carrier (2). The demolisher is completely self-adjusting as a consequence of that the hydraulic force necessary to maneuver the legs (1, 3) of the demolisher pivotally journalled in a bracket (4a) emanates from a coupling between the legs (1, 3) of the demolisher at the same time as the legs of the demolisher together with the cylinder/cylinders (6) acting on these are journalled in at least one common attachment point (5) in the bracket (4a).

Description

CONCRETE DEMOLISHER
The present invention relates to a device at tear down demolishers, concrete and scrap demolishers, which in a starting position are pivotally mounted in their length direction on tool carriers, mainly excavators, in order to make it possible to manoeuver, such as to grip and demolish material, by connection to the hydraulic system of the tool carrier.
When previously performing demolishing work, diffe¬ rent types of concrete crushing equipment have been used, such as air driven hammers mounted on tool carriers men¬ tioned above. However, air hammers have become more and more troublesome to use during later years due to the heavy noise generated at the use of tools of this kind. As a con¬ sequence demolishing tools of the above mentioned kind have more recently been used to an increasing extent.
Such demolishing tools, though having a pivoting pos- sibility, are always to be seen as accessory equipment for tool carriers, such as excavators, and is often supplied from manufacturers that have only adapted the fastener of its demolishing equipment to the tool holder of the tool carrier. As a consequence of insufficient constructional adaptation, problems both with regard to durability and to stability will arise, which problems may have immediate consequences both in break downs and in the long run due to that the details of the tool carrier are subjected to loads which they are not dimensioned for. When a demolisher equipment of the above mentioned kind pinches an object which is not in line with the arm of the tool carrier, special problems will arise. Hereby large bending moments are applied on the tool carrier, which even may be dangerous when the force of the demolisher gives a torque in the transverse direction of the tool carrier, in which direction the stability of the tool carrier does not limit the forces on the equipment.
The object of the present invention is to provide an equipment with which the problems described above and asso- ciated therewith are solved.
According to the invention the demolisher is comple¬ tely self-adjusting as a consequence of that the hydraulic force necessary to manoeuver the legs of the demolisher, pivotally journalled in a bracket, emanates from a coupling between the legs of the demolisher at the same time as the legs of the demolisher together with the pressure cylin¬ der/cylinders acting on these are journalled in at least one common attachment point in the bracket.
The invention will be further described below under reference to the attached drawings, which show and eluci¬ date the problem in question as well as describe an embodi¬ ment of the invention, and in which:
Fig. 1 is a side view of a known concrete demolisher construction, which through its construction gives both torque and bending moment on the tool carrier,
Fig. 2 is another side view of a known concrete de¬ molisher, having a pivotal connection between the tool carrier and the demolisher in order to eliminate the reac¬ tion force from the torque, Fig. 3 is a top view schematically showing an excava¬ tor as a tool carrier and the action from the bending moment which appears as a consequence of the grip of the demolisher,
Fig. 4 is a view corresponding to Fig. 3, though with a demolisher according to the invention,
Fig. 5 more in detail shows the construction of and the mobility of a demolisher according to the invention,
Fig. 6 shows further details of preferred embodiments of the invention, and Fig. 7 shows an alternative embodiment of a demo¬ lisher according to the invention.
Fig. 1 shows how a demolisher of a known kind works. One of the legs 1 of the demolisher, which at the same time constitutes a foundation for attachment to a tool carrier 2, is made to grip around an object in that another leg 3 is pivoted around a pivot point on the leg 1 and is actua¬ ted by a hydraulic cylinder operating from the foundation. With a construction of this kind both a bending moment and a torque from the demolisher are obtained and are directly transferred to the tool carrier 2 with the resulting pro¬ blem recited above.
Fig. 2 shows a construction which prevents the appea¬ rance of a torque when gripping and/or cutting an object. This is obtained in that both the legs 1 and 3 are mounted on a carrier 4, which in turn is pivotably arranged on a mounting bracket, which in its turn is fastened to the tool carrier 2 in a conventional manner (not shown) . Fig. 3 is only intended to show (somewhat exaggerated) how a demo- lisher construction according to Fig. 2 effects the tool carrier 2 when a bending moment arises.
Fig. 4 schematically shows an embodiment of the in¬ vention and how such a demolisher trough its self-adjusting function uses said bending moment for turning the legs of the demolisher until an equilibrium at a bending moment which approximately is equal to zero arises.
The demolisher according to Fig. 4 is shown more in detail in Fig. 5 where it is more evident how the legs of the demolisher are pivotably journalled in one and the same point 5 on a carrier 4a. The legs of the demolisher are furthermore connected to each other by a double acting hyd¬ raulic cylinder 6 which is connected to the hydraulic sys¬ tem of the tool carrier 2 and performs the gripping and/or demolishing work to be done. At the reference numeral 7 in the Figure it appears how the carrier 4a in a way known per se is pivotally arranged on the tool carrier 2. The pos¬ sible end positions for the respective legs are shown with dash-dotted lines. By arranging a return spring 8 between the leg 2 and the carrier 4a both the legs 1 and 2 may after each operation assume a service-friendly starting position which is such that the operator always knows from which position the legs will start.
Fig. 6 shows an arrangement which is substantially analogous to the one shown in Fig. 5 but on which a couple of other qualities have been added. A hydraulically manoeu- vered locking cylinder 9 may if required lock the leg 2 to the carrier 4, whereby, however, the positive feature with bending moment equalization will disappear. Moreover, each demolisher leg 1 and 2 has been provided with a shoulder 12 which stops pivoting of the legs into angles that only make the demolisher difficult to handle.
Fig. 7 shows last but not least an embodiment of a demolisher in which two hydraulic cylinders 6 are used instead of only one. In this embodiment the hydraulic cylinders 6 act between a couple of legs 3 arranged in front of each other and a distance piece 10 which is freely pivotally journalled on a carrier 4a as in the embodiments described above. The arrangement according to Fig. 7 gives a better control and of course a greater potential force when gripping/cutting than the earlier described embodi¬ ments.
The invention has been described in detail above with reference to a specific embodiment, which by no means should be seen as delimiting for the invention which is defined by the enclosed claims.

Claims

C L A I M S
1. A device at tear down demolishers, concrete and scrap demolishers, which in a starting position are pivo¬ tally mounted in their length direction on tool carriers (2) , mainly excavators, in order to make it possible to manoeuver, such as to grip and demolish material, by con¬ nection to the hydraulic system of the tool carrier (2) , c h a r a c t e r i z e d in that the demolisher is completely self-adjusting as a consequence of that the hydraulic force necessary to manoeuver the legs (1, 3) of the demolisher pivotally journalled in a bracket (4a) , emanates from a coupling between the legs (1, 3) of the demolisher at the same time as the legs of the demolisher together with the pressure cylinder/cylinders (6) acting on these are journalled in at least one common attachment point (5) in the bracket (4a) .
2. A device according to claim 1, c h a r a c t e r i z e d in that it comprises only one hydraulic cylinder (6) , which is arranged between the legs of the demolisher (1, 3) .
3. A device according to claim 1, c h a r a c t e r i z e d in that it comprises two hydrau¬ lic cylinders (6) , which are manoeuverable independently from each other and are mechanically connected on one hand to each of the demolisher legs (1, 3) and on the other hand to a common distance piece (10) which in itself is pivo¬ tally arranged on a carrier (4a) .
4. A device according to claim 2, c h a r a c t e r i z e d in that it comprises means (8) for centering the demolisher in its center position by the use of a certain force which is such that the demolisher may turn in the carrier (4a) when the bias force is excee¬ ded.
5. A device according to claim 2 or 4, c h a r a c t e r i z e d in that the one leg (3) of the demolisher may be locked in relation to the carrier (4a) whereby the connection between the leg (3) and the carrier becomes rigid enabling it to take up torque.
6. A device according to anyone of the preceeding claims, c h a r a c t e r i z e d in that the possible pivot angle of the demolisher legs (1, 3) in relation to the carrier (4a) is limited by stop means (12) .
7. A device according to claim 6, c h a r a c t e r i z e d in that the stop means (12) are arranged on the respective legs (1, 3) .
PCT/SE1995/000745 1994-06-17 1995-06-19 Concrete demolisher WO1995035418A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU27603/95A AU2760395A (en) 1994-06-17 1995-06-19 Concrete demolisher

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9402128-4 1994-06-17
SE9402128A SE9402128D0 (en) 1994-06-17 1994-06-17 Device for concrete shears

Publications (1)

Publication Number Publication Date
WO1995035418A1 true WO1995035418A1 (en) 1995-12-28

Family

ID=20394424

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1995/000745 WO1995035418A1 (en) 1994-06-17 1995-06-19 Concrete demolisher

Country Status (3)

Country Link
AU (1) AU2760395A (en)
SE (1) SE9402128D0 (en)
WO (1) WO1995035418A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5664734A (en) * 1995-02-23 1997-09-09 Nippon Pneumatic Manufacturing Co., Ltd. Crusher apparatus
EP0825312A1 (en) * 1996-08-19 1998-02-25 Nippon Pneumatic Manufacturing Co. Ltd. Crusher

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3342305C2 (en) * 1983-09-16 1989-04-06 Takachiho Kogyo Yuugen Kaisha, Tokio/Tokyo, Jp
EP0435702A1 (en) * 1989-12-15 1991-07-03 LaBounty Manufacturing, Inc. Demolition tool for a hydraulic excavator
US5224268A (en) * 1992-04-20 1993-07-06 Pemberton, Inc. Apparatus for shearing a material mass
DE3923173C2 (en) * 1988-07-26 1993-08-19 Kabushiki Kaisha Sakato Kosakusho, Chiba, Jp

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3342305C2 (en) * 1983-09-16 1989-04-06 Takachiho Kogyo Yuugen Kaisha, Tokio/Tokyo, Jp
DE3923173C2 (en) * 1988-07-26 1993-08-19 Kabushiki Kaisha Sakato Kosakusho, Chiba, Jp
EP0435702A1 (en) * 1989-12-15 1991-07-03 LaBounty Manufacturing, Inc. Demolition tool for a hydraulic excavator
US5224268A (en) * 1992-04-20 1993-07-06 Pemberton, Inc. Apparatus for shearing a material mass

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5664734A (en) * 1995-02-23 1997-09-09 Nippon Pneumatic Manufacturing Co., Ltd. Crusher apparatus
EP0825312A1 (en) * 1996-08-19 1998-02-25 Nippon Pneumatic Manufacturing Co. Ltd. Crusher

Also Published As

Publication number Publication date
SE9402128D0 (en) 1994-06-17
AU2760395A (en) 1996-01-15

Similar Documents

Publication Publication Date Title
US4881867A (en) Excavator attachment
US4295287A (en) Backhoe bucket quick coupler
US6379075B1 (en) Quick coupler apparatus
US4375345A (en) Clamping arm assembly for a backhoe
US5581917A (en) Quick coupling device
US5975604A (en) Grapple with universal attachment device
US5431528A (en) Quick coupling arrangement for excavator buckets and the like
US5465513A (en) Device for quick connection of hydraulic tubings
US5423625A (en) Boom/arm coupler for excavator
US5400531A (en) Excavator device
US4466494A (en) Implement with gripping arm assembly for a backhoe
US5467542A (en) Coupling assembly and actuating mechanism therefor
US4373852A (en) Quick coupling and release mechanism for buckets
ATE259921T1 (en) DEVICE FOR DETACHABLE COUPLING A TOOL TO A BOOM OF AN EXCAVATOR
US6132130A (en) Excavator hitch
US6305106B1 (en) Apparatus for releasably coupling an attachment to an excavator
KR0136104B1 (en) Gear lock quick disconnect mechanism for articulated machine
CA2037202A1 (en) Universal excavator with auxiliary tool supply means and bucket scraper
US4932832A (en) Backhoe gripping attachment
EP0695386B1 (en) Implement coupling for excavator or loader
US7866935B1 (en) Manually operated coupler
JP2004360447A (en) Tool coupler
WO1995035418A1 (en) Concrete demolisher
WO2003021047A1 (en) Excavator assembly
US4425072A (en) Material handling equipment extension apparatus for wrecking and the like

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AU CN FI JP KR PL US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 1995922863

Country of ref document: EP

WWW Wipo information: withdrawn in national office

Ref document number: 1995922863

Country of ref document: EP

122 Ep: pct application non-entry in european phase