EP0191336A1 - Ensemble composé d'un outil de frappe et d'une unité de support - Google Patents

Ensemble composé d'un outil de frappe et d'une unité de support Download PDF

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Publication number
EP0191336A1
EP0191336A1 EP86100968A EP86100968A EP0191336A1 EP 0191336 A1 EP0191336 A1 EP 0191336A1 EP 86100968 A EP86100968 A EP 86100968A EP 86100968 A EP86100968 A EP 86100968A EP 0191336 A1 EP0191336 A1 EP 0191336A1
Authority
EP
European Patent Office
Prior art keywords
unit
arrangement according
shaped elements
elements
carrier unit
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.)
Granted
Application number
EP86100968A
Other languages
German (de)
English (en)
Other versions
EP0191336B2 (fr
EP0191336B1 (fr
Inventor
Friedrich-Karl Dr.-Ing. Arndt
Karlheinz Fritz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fried Krupp AG Hoesch Krupp
Original Assignee
Fried Krupp AG Hoesch Krupp
Fried Krupp AG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6262390&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0191336(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Fried Krupp AG Hoesch Krupp, Fried Krupp AG filed Critical Fried Krupp AG Hoesch Krupp
Priority to AT86100968T priority Critical patent/ATE39519T1/de
Publication of EP0191336A1 publication Critical patent/EP0191336A1/fr
Application granted granted Critical
Publication of EP0191336B1 publication Critical patent/EP0191336B1/fr
Publication of EP0191336B2 publication Critical patent/EP0191336B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E02F3/96—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements
    • E02F3/966—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements of hammer-type tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/24—Damping the reaction force
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/26—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by impact tools, e.g. by chisels or other tools having a cutting edge

Definitions

  • the invention relates to an arrangement consisting of a guide or carrier unit and an impact unit arranged within the carrier unit and connected to it via elastic damping elements, which contains a piston which can be moved translationally in a cylinder onto an anvil-like tool.
  • the carrier unit is generally screwed to a connecting piece which is pivotally mounted on the boom of a mobile carrier device.
  • a hydraulic hammer is supported as an impact unit axially against a box-shaped support unit via compression springs.
  • an elastic stop is provided to limit the hammer with little impact.
  • the hammer is guided in wear plates arranged on the carrier unit, so that the vibrations generated by the impact can be radiated unhindered via the housing or the carrier unit, which leads to a considerable acoustic pollution of the environment.
  • the chisel tip is axially loaded.
  • the hammer is supported radially against the housing by a pre-stressed hollow cylindrical insulation element.
  • the hammer lies with a shoulder on metallic locking elements which are fastened directly to the housing, so that in this case there is an undamped metallic connection between the hammer and the housing.
  • the invention has for its object to provide an arrangement with a striking unit and a carrier unit in which even in extreme, i.e. the greatest forces occurring with such an arrangement, in particular also radial forces and when the impact unit is looked up without load, an effective reduction of noise and gentle operation is possible.
  • the elastic material is only subjected to tension and shear in the area of lower loads transversely to the hammer axis. Since there is no mechanical or metallic limitation of the relative movement in the arrangement after the linearity range of the damping material has been exceeded, a metallic contact between the hammer and the carrier unit as the cause of disturbing noise and high wear and tear is reliably avoided if the arrangement is dimensioned correctly.
  • the hammer is reliably guided within the carrier unit even when the damping elements are installed without pretensioning.
  • the number of bolts holding the side cheeks of the carrier unit together can be reduced to a minimum.
  • a further progression of the already disproportionate spring characteristic of the damping material can be achieved if the arrangement is designed according to one of claims 10 to 12, wherein a particularly simple measure can be carried out with the use of an adhesive connection according to claim 11. With the increase in the progression of the spring characteristic curve, it is at the same time achieved that a metallic contact between the striking unit and the carrier unit is avoided with greater certainty with otherwise the same dimensions. Additional sound absorbing measures are described in claims 13 and 14.
  • a hydraulic hammer 2 provided with a chisel 1 is arranged in a guide or carrier unit 3.
  • the carrier unit 3 is in turn fastened to a connecting piece 4 which is fastened to a boom 5 of a carrier vehicle 6.
  • the boom 5 has a main arm 7 which is articulated on a main support 8.
  • the main carrier 8 is articulated in the carrier vehicle 6 and its angular position can be changed by a hydraulic cylinder 9.
  • the angular position of the main arm can be changed by a hydraulic cylinder 10.
  • An extension arm 11 is articulated to the free end of the main arm 7, the angular position of which can be changed with respect to the main arm by a hydraulic cylinder 12.
  • the connector 4 can be adjusted in its angular position relative to the extension arm 11 by a further hydraulic cylinder 13.
  • the chisel 1 can thus be attached to the material 14 to be reduced in wide areas at different heights, widths and angular positions by means of the described cantilever elements in the plane of the drawing, which also represents the central plane of the cantilever 5.
  • the guide or carrier unit 3 has two side cheeks 16, each of which has one Flange 17 are screwed to the connector 4.
  • the side walls 16 have bushes 18 with coaxial bores 19 in pairs at three points, in each of which there is a common bolt 20 which is axially fixed in the carrier unit 3 at each end with a roll pin 21.
  • FIG. 2 While the arrangement in FIG. 2 is shown in the same view as the arrangement in FIG. 1 attached to the carrier vehicle 6, the arrangement in FIG. 3 is shown in a section along the line III-III in FIG. 2. While the center line 23 shown in broken lines in FIG. 3 represents the main or longitudinal center plane of the arrangement, the center line 24 shown in broken lines in FIG. 2 corresponds to the transverse center plane.
  • the hammer 2 in which a percussion piston 26, which can be moved in a cylinder 25 indicated by dashed lines in FIG. 2, acts pulsatingly on the chisel 1, has three through openings or holes 27, the arrangement or hole pattern of which corresponds to that of the bores 19 in covers the cheeks 16.
  • the through holes 27 have a cylindrical extension 29 delimited by collar-like shoulders 28 in the middle and a chamfer 30 on the outside.
  • the space between the cylindrical extension 28 of the respective opening 27 and the associated bolt 20 of the carrier unit 3 is filled by a damping element 31 made of flexible material. Overall, the arrangement has three elastic connections designed in this way between the carrier unit 3 and the hammer 2.
  • the bolts 20 with the damping elements 21 are pressed through the chamfers 30 into the bores 27 until the material of the damping elements 31 completely fills the cylindrical extension 29.
  • the essential forces occurring in the main median plane 23 between the hammer 2 and the carrier unit 3 can be transmitted correctly both with a vertical or - with respect to the chisel 1 and the cylinder 25 - axial component as well as with a horizontal or radial component will.
  • the elastic material has a progressive spring characteristic, that is, the transmitted force increases disproportionately compared to the deflection or the relative movement between the hammer 2 and the carrier unit 3, so that a change in the range of large forces results in only a slight change in the relative movement Has.
  • the - based on the bolts 20 - radial distance of the metallic parts between the hammer 2 and the bushes 18 of the support unit 3 is selected such that metallic contact is reliably prevented even with the greatest forces to be expected.
  • the axial distance between the hammer 2 and the bushes 18, which in turn is related to the bolts 20, is also chosen to be so large that metallic contact does not take place even with the greatest forces to be expected with a component perpendicular to the main central plane 23.
  • a band-shaped casing 32 made of sound-absorbing material is arranged between the side walls 16 of the carrier unit 3.
  • the jacket 32, the openings 33, 34. for the passage of the hoses 35 for the hydraulic medium or for the passage for the chisel 1, is held by flanges 36 of the side walls 16 and led to the underside of the hammer 2.
  • the side walls 16 are covered on their inside with insulation mats 37 for further sound insulation.
  • the damping elements 31 are connected to the corresponding surfaces of the passage opening 27 in the hammer 2 or to the surface of the bolts 20 by means of frictional or frictional engagement, while the shoulders 28 of the openings 27 and the bushes 18 have a partial positive engagement only on the sides to the damping elements 31.
  • the essentially hollow cylindrical damping elements 31 can, however, also be connected to the bolt 20 on their inner surface by an adhesive connection, as a result of which the spring characteristic "applied force depending on the relative movement between hammer 2 and carrier unit 3" runs more progressively.
  • a hydraulic hammer 102 has cylindrical recesses 39 on its two side surfaces, which are inserted into pins 40 with a fixed press fit.
  • the pins 40 have a cylindrical circumferential groove 41, to which a hollow-cylindrical damping element 131 made of flexible material is applied.
  • the associated carrier unit 103 in turn has two side cheeks 116 which are connected to one another by spacer bolts 44.
  • the side walls 116 each have two bushes 45, the hole pattern of which corresponds to that of the recesses 39 of the hammer 102.
  • the sockets 45 point to the inside, that is, in the direction of the respective other cheek 116 has a cylindrical recess 46 which is delimited to the outside by a collar-shaped constriction or shoulder 47.
  • the cheek 116 shown on the left in FIG. 5 with the bushes 45 is pushed onto the damping elements 131 of the associated pins 40 of the hammer 102, the spacer bolts 44 already being on the cheek 116.
  • the cheek 116 shown on the right in FIG. 5 with its bushes 45 is then pushed onto the damping elements 131 of the corresponding pins 40 and connected to the other cheek 116 via the spacer bolts 44 to form a fixed unit 103.
  • the damping elements 131 are also generally with a radial preload between the pins 40 and the bushes 45.
  • the progression of the spring characteristic of the elastic connection provided by the damping elements 131 between the hammer 102 and the carrier unit 103 can also be increased thereby (which at same force is equivalent to a reduction in the relative movement) that the damping elements 131 are glued to the bolts 40.
  • a further increase in the progression of the spring characteristic can be achieved in that the damping elements 131 are surrounded by a steel sleeve 49 glued to them (cf. FIG. 6).
  • the steel sleeve 49 has a fixed sliding fit in relation to the recess 46 in the cylindrical bush 45.
  • the hammer 202 has a cylindrical recess 51 and an annular groove 52 arranged concentrically to it instead of the through openings 27 or the recesses 39.
  • a cover 54 which can be inserted into a recess 53 in the side cheeks 216, has, corresponding to the recess 51 and the groove 52, a pin 55 and an annular web 56 arranged concentrically around it.
  • An annular damping element 231 with a U-shaped cross section is arranged in the groove of the cover 54 formed by the pin 55 and the web 56 and a band-shaped damping element 231a is arranged on the outer surface of the web 56 and is connected to the cover 54 by an adhesive connection.
  • the cover 59 inserted into a recess 58 of the side cheeks 316 has parallel webs 60 with grooves 61 lying between them.
  • the webs 60 are tapered trapezoidally towards their open end.
  • Corresponding damping elements 331, 331a are vulcanized onto the side surfaces of the outer webs 60 and in the grooves 61.
  • the cover 59 designed in this way engages with its webs 60 in corresponding ones parallel grooves 62 embedded in the hammer 302, which run there transversely to the hammer axis.
  • the covers 59 which extend through the recesses 58 in the side cheeks 316 are firmly connected to the side cheeks 316 by screw connections 63.
  • the pretensioning of the damping elements 331, 331a can be changed by different thicknesses b of the flange width of the cover 59 and thus influence their spring characteristic accordingly.
  • the concentrically arranged webs and grooves can also have a trapezoidal or conical cross section and the parallel webs and grooves can have a rectangular cross section.
  • the damping elements 31, 131, 231 and 331 and the insulating jacket 32 are made of rubber or a rubber-like material.
  • the insulation mats 37 can consist of a thermoplastic, flexible plastic mixture enriched with specifically heavy fillers and having a density of the order of (2 ... 2.5) 10 3 kg / m 3 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Shovels (AREA)
  • Tyre Moulding (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Vibration Prevention Devices (AREA)
EP86100968A 1985-02-13 1986-01-24 Ensemble composé d'un outil de frappe et d'une unité de support Expired - Lifetime EP0191336B2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86100968T ATE39519T1 (de) 1985-02-13 1986-01-24 Anordnung bestehend aus schlagaggregat und traegereinheit.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3504871 1985-02-13
DE3504871A DE3504871C2 (de) 1985-02-13 1985-02-13 Gerät bestehend aus Trägereinheit und Schlagaggregat

Publications (3)

Publication Number Publication Date
EP0191336A1 true EP0191336A1 (fr) 1986-08-20
EP0191336B1 EP0191336B1 (fr) 1988-12-28
EP0191336B2 EP0191336B2 (fr) 1995-07-26

Family

ID=6262390

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86100968A Expired - Lifetime EP0191336B2 (fr) 1985-02-13 1986-01-24 Ensemble composé d'un outil de frappe et d'une unité de support

Country Status (4)

Country Link
EP (1) EP0191336B2 (fr)
JP (1) JPH0716895B2 (fr)
AT (1) ATE39519T1 (fr)
DE (1) DE3504871C2 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0447552A1 (fr) * 1989-07-11 1991-09-25 Institut Gidrodinamiki Imeni M.A. Lavrentieva Sibirskogo Otdelenia Akademii Nauk Sssr Dispositif de frappe
EP0534369A1 (fr) * 1991-09-23 1993-03-31 Esco Corporation Support de fixation pour outils d'un engin de terrassement
US6058632A (en) * 1997-11-07 2000-05-09 Hawkins; Peter Arthur Taylor Tool holder with percussion member
EP1627960A3 (fr) * 2004-08-18 2007-05-23 Toku Pneumatic Tool MFG Co. Ltd. Support de fixation pour brise-roche.
EP2109519A1 (fr) * 2007-02-07 2009-10-21 Robert Bosch GmbH Amortissement des vibrations pour un outil électrique
WO2012082984A1 (fr) * 2010-12-18 2012-06-21 Caterfillar Inc Tampon latéral de marteau

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2541389Y2 (ja) * 1990-03-07 1997-07-16 ホシザキ電機株式会社 食器洗浄装置
CN104234109B (zh) * 2014-09-01 2016-06-01 山东天瑞重工有限公司 液压破碎锤

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB282188A (en) * 1926-10-18 1927-12-22 Riley Coventry Ltd Improvements in engine and gear box mountings
US2048256A (en) * 1933-09-15 1936-07-21 Gen Motors Corp Oscillating pivot joint unit
GB653982A (en) * 1948-08-19 1951-05-30 Wright Howard Clayton Improvements in flexible bearings or mountings
FR2215293A1 (fr) * 1973-11-28 1974-08-23 Poclain Sa
US3889762A (en) * 1973-02-17 1975-06-17 Dobson Park Ind Rock breaking machine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5337703U (fr) * 1976-09-04 1978-04-03
JPS5723115U (fr) * 1980-07-15 1982-02-05
JPS5920441U (ja) * 1982-07-30 1984-02-07 株式会社東芝 信号検出回路装置
DE8331703U1 (de) * 1983-11-02 1984-10-04 Henze, Heinrich, 1000 Berlin Hydraulischer aufbruchhammer

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB282188A (en) * 1926-10-18 1927-12-22 Riley Coventry Ltd Improvements in engine and gear box mountings
US2048256A (en) * 1933-09-15 1936-07-21 Gen Motors Corp Oscillating pivot joint unit
GB653982A (en) * 1948-08-19 1951-05-30 Wright Howard Clayton Improvements in flexible bearings or mountings
US3889762A (en) * 1973-02-17 1975-06-17 Dobson Park Ind Rock breaking machine
FR2215293A1 (fr) * 1973-11-28 1974-08-23 Poclain Sa

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0447552A1 (fr) * 1989-07-11 1991-09-25 Institut Gidrodinamiki Imeni M.A. Lavrentieva Sibirskogo Otdelenia Akademii Nauk Sssr Dispositif de frappe
EP0447552A4 (en) * 1989-07-11 1991-12-18 Petr Yakovlevich Fadeev Striking device
EP0534369A1 (fr) * 1991-09-23 1993-03-31 Esco Corporation Support de fixation pour outils d'un engin de terrassement
US6058632A (en) * 1997-11-07 2000-05-09 Hawkins; Peter Arthur Taylor Tool holder with percussion member
EP1627960A3 (fr) * 2004-08-18 2007-05-23 Toku Pneumatic Tool MFG Co. Ltd. Support de fixation pour brise-roche.
US7628222B2 (en) 2004-08-18 2009-12-08 Toku Pheumatic Tool Mfg. Co., Ltd. Breaker mounting bracket
EP2109519A1 (fr) * 2007-02-07 2009-10-21 Robert Bosch GmbH Amortissement des vibrations pour un outil électrique
EP2109519A4 (fr) * 2007-02-07 2011-02-23 Bosch Gmbh Robert Amortissement des vibrations pour un outil électrique
US8714280B2 (en) 2007-02-07 2014-05-06 Robert Bosch Gmbh Vibration dampening for a power tool
WO2012082984A1 (fr) * 2010-12-18 2012-06-21 Caterfillar Inc Tampon latéral de marteau

Also Published As

Publication number Publication date
EP0191336B2 (fr) 1995-07-26
EP0191336B1 (fr) 1988-12-28
DE3504871A1 (de) 1986-08-14
JPS61188089A (ja) 1986-08-21
ATE39519T1 (de) 1989-01-15
JPH0716895B2 (ja) 1995-03-01
DE3504871C2 (de) 1994-02-10

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