EP0347371B2 - Brechzange zum Abräumen von Bauwerken, insbesondere von Mauern aus armiertem Beton - Google Patents

Brechzange zum Abräumen von Bauwerken, insbesondere von Mauern aus armiertem Beton Download PDF

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Publication number
EP0347371B2
EP0347371B2 EP89810349A EP89810349A EP0347371B2 EP 0347371 B2 EP0347371 B2 EP 0347371B2 EP 89810349 A EP89810349 A EP 89810349A EP 89810349 A EP89810349 A EP 89810349A EP 0347371 B2 EP0347371 B2 EP 0347371B2
Authority
EP
European Patent Office
Prior art keywords
pliers
tongs
bumps
cutting
concrete
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP89810349A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0347371B1 (de
EP0347371A1 (de
Inventor
Hans-Rudolf Zepf
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.)
DRAGO ENGINEERING AG
Original Assignee
DRAGO ENG AG
DRAGO ENGINEERING 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=4230741&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0347371(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by DRAGO ENG AG, DRAGO ENGINEERING AG filed Critical DRAGO ENG AG
Priority to AT89810349T priority Critical patent/ATE92140T1/de
Publication of EP0347371A1 publication Critical patent/EP0347371A1/de
Application granted granted Critical
Publication of EP0347371B1 publication Critical patent/EP0347371B1/de
Publication of EP0347371B2 publication Critical patent/EP0347371B2/de
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
    • E02F3/965—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements of metal-cutting or concrete-crushing implements
    • 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
    • B28D1/22—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by cutting, e.g. incising
    • B28D1/222—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by cutting, e.g. incising by pressing, e.g. presses
    • 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 invention lies in the field of construction machinery and relates to a crusher guided by a construction machine for clearing structures, in particular structures made of reinforced concrete, according to the preamble of patent claim 1.
  • the cutting levers are provided with bumps which have to be welded on when they are worn.
  • a separating blade attached to a separate shoulder of the cutting lever for cutting reinforcements in the concrete is arranged on each cutting lever. The breaking of the concrete and the separation of reinforcements can be done in a pair of pliers cuts.
  • only the free end of the cutting lever is equipped with an exchangeable crushing jaw.
  • the object of the invention is the creation of a concrete pliers with which the separation of the reinforcement and the breaking of the concrete in succession in the same plier cut is possible and worn bumps on the cutting levers can be replaced with little effort.
  • the pliers device shown in Figure 1 consists of the following essential components.
  • the pliers parts 1 and 1 ' which, by interacting, represent the pliers function.
  • Due to the central axis of rotation here, the pliers parts are divided into two parts, the pliers levers 3,3 'and the cutting levers 4,4'.
  • the pliers parts are pivotally mounted on a pliers body 7.
  • Hydraulic actuating pistons 10, 10 ' actuate the two parts of the pliers, the point of application of the force on the pliers levers 3, 3' is arranged on the outer ends 9, 9 'of the pliers levers.
  • a force actuating element a double-acting hydraulic piston 10, 10 'is provided, the operation of which will be discussed later.
  • a pliers stem 11, 11 ' is arranged on the pliers parts 1, 1' outside of the axes of rotation 2.2 'in the direction of the cutting levers 4, 4' and represents a kind of pliers in itself.
  • This pliers stem 11, 11 ' carries a cutting edge 6, 6' for cutting reinforcements, especially reinforcing irons.
  • each cutting lever 4,4 'of the pliers parts 1,1' carries a pliers cutting edge 5,5 '.
  • Each of these cutting edges 5,5 ' has at least two pliers bumps 12,12', which are interchangeable in a special embodiment.
  • the pliers cutting edge 5 is detachably fastened to the pliers part 1 with, for example, screws 13.
  • FIGS 2 and 3 show the concrete tongs open and closed in the assembled state.
  • the pincer bumps 12, 12 'are to be noted which are here renamed rear bumps A and front bumps B.
  • the rear humps A cause a so-called bite, with which the break point is identified and thus the break is provoked.
  • the front humps cause a so-called afterbite, with which the provoked break is put into practice.
  • the distance between the cusps A and B denotes the length of the lever over which the refractive power would decrease if the cusps were the same size.
  • the humps are of different heights, namely in such a way that the inner humps A with the smaller lever length and the greater force effect attack earlier and thus exert the initial refractive power, while the outer humps B with the longer lever length and the smaller force effect Apply the force a little later to the surface to be cracked and thus take over the final refractive power.
  • the breaking effect of the pliers parts can be adjusted to different breaking thicknesses (wall thicknesses) by the distance between two bumps and by the height of the bumps according to the opening width.
  • the crushing knuckles are designed to be detachable and replaceable.
  • different pliers blades 5,5 'with the correspondingly molded or attached pliers bumps 12,12' are designed to be insertable into the cutting lever part 4,4 'and with fastening means, as shown in the figure by a screw 13, for example. attached to the cutting levers.
  • the cusps are releasably inserted as such, similar to sift teeth in the jaw, in the cutting levers 4, 4 'or in an intermediate carrier, similar to the pliers cutting 5.5'.
  • the claws cusps, with cutting edge and root, are inserted a tapered opening and are secured, for example, by a cross pin. Since the pliers bumps exert their breaking effect under pressure, they do not have to be secured against well-known tensile forces. It is therefore sufficient to insert the cross pin through a depression in the cusp root so that it is only pinched. This will be discussed in more detail in connection with FIG. 6.
  • pincer bumps which consist of a hardened material
  • the pliers can be well normalized. So all interchangeable pincer bumps have roots of the same size and design. The cusp edge is built up at different heights on such a standard root. In this way, each pair of pliers can be inserted at the point A or B, depending on the desired bite profile for the pre-bite and the post-bite, if necessary also for an intermediate bite if more than two pliers bumps are to be arranged on the cutting lever 4,4 '. It is easy to see that any biting characteristic can be produced in this way.
  • FIG. 4 shows the concrete pliers seen from the side, in which representation the rather surprisingly narrow cutting levers 4 are also visible from this side.
  • the cutting lever thickness is approx. 40 mm
  • the total thickness of the pliers is just over 30 cm (this corresponds to the model T-3 of the crusher series).
  • the lever proportions H: h and H: A for the inner tongs and H: B for the outer tongs are clearly visible. It is clear that intermediate pincers can also be used, which exert their corresponding breaking effect within the proportion H: h in connection with the preliminary and / or cooperation with the other pincers.
  • the suspension device 8 on which the concrete tongs are rotatably mounted about their longitudinal axis, should also be mentioned. This free rotation is necessary to avoid damaging torsional forces on the hydraulic booms to which the concrete tongs are attached. So the pliers can be attached to the masonry and closed. Any rotation or tilting of the pliers is then avoided by the rotatability of the suspension device.
  • the concrete pliers according to the invention should also be able to cut through the reinforcing bars cast into the concrete either in the same or in a subsequent work step, for which purpose a pliers stem 11, 11 'for receiving a separating blade 6, 6' is provided on each plier part 1, 1 '.
  • a pliers stem 11, 11 'for receiving a separating blade 6, 6' is provided on each plier part 1, 1 '.
  • the separating blades 6, 6' are detachably and interchangeably fastened in the pliers stem.
  • the breaking of the concrete is based on the wedge effect with which the surface layer of the concrete wall is driven apart.
  • New pincer bumps have a better wedge effect than blunt pincer bumps.
  • the inner pincer bumps are subjected to greater force and therefore wear out faster than the outer pincer bumps. Since the pincer bumps can now be replaced individually and therefore the exchange is also more cost-effective, the breaking performance can be kept much higher at the same cost as before.
  • there is the possibility of an optimal hump arrangement with regard to hump height which effectively adds to the improved breaking performance.
  • the same can also apply to the separating blades 6, 6 ', the shape and arrangement of which can also be varied to increase the shear effect.
  • FIGS. 5A, B and C show refractive power or cutting force diagrams as a function of the wall thickness or steel thickness.
  • the force attack on the material to be cleared is shown at the inner pliers bumps at point A, at the outer pliers bumps at point B and between the separating blades at different operating pressures.
  • the operating pressures are 150, 175, 200 and 225 bar.
  • the refractive power is between 35 and 60 tons between the inner, 20 to 36 tons between the outer pliers bumps for wall thicknesses of 10 to 40 cm (see also legend to Figure 1) and the cutting force between the separating blades is between 50 to 80 tons for reinforcing bars between 10 and 40 mm.
  • the proportions of the pliers levers are approximately as follows: the distance from the axis of rotation 2.2 'of a pliers part 1.1' to the force application point in the pliers lever 3.3 ', transferred to the cutting lever 4.4', is sufficient between the inner and outer pliers bumps in points A and B. In this way, the inner pincer bumps experience a higher breaking pressure than the forceps lever force and the outer pincer bumps experience a slightly smaller one.
  • the refractive power diagrams correspond to a pair of pliers with a maximum opening of 45 cm. It can be seen that the refractive power begins to decrease, a little over 25 cm between the inner tongs at wall thicknesses, a little over 20 cm between the outer tongs at wall thicknesses. The reason for this is the pliers geometry, which in the case of pliers depends on the length of the cutting lever or the length of the pliers. While the pliers lever length is constant, the cutting lever length varies (in the example discussed by approx. 25 cm).
  • the force on the tong levers 3,3 ' is exerted hydraulically by a double-acting cylinder.
  • the double-acting cylinder has a flying piston and is operated with both piston surfaces, which means that the hydraulic pressure is on one side of the piston on the outer piston crown and on the other Put the piston side at the same time on the inner (lower) piston crown.
  • the approximate doubling of the piston area in one direction of action almost gives the force of two hydraulic cylinders.
  • a pressure intensifier which usually has to be used to obtain the necessary refractive power of 30 to 40 tons at an operating pressure of approx. 150 bar.
  • the usual known pressure intensifiers have a translation effect of approximately a factor of 2 to 4.
  • FIG. 9 shows the basic illustration of such a cylinder: areas A with 2 times the largest area or pressure for closing the crusher via the hydraulic inlets 90, 90 ', slowly and with the highest pressure closing, ie great force, that is, the effect of two cylinders is expressed; Surfaces B with 2 times the smallest surface for opening the crushing tongs via the hydraulic inlets 91,91 ', opening quickly and with low pressure.
  • the overall effect is as follows, slow if a lot of force is used and fast if little force is used, which results in an optimal work cycle.
  • FIG. 6 now shows the device with the interchangeable pliers bumps in one embodiment, with which the concrete pliers can be used with the exact "bit" or only new teeth.
  • the entire part represents a pliers cutting edge 5, as can also be seen in FIG. 1 with molded cusps.
  • This pliers cutting edge consists here in detail of a bump bed 60 with the recesses 62 and 64 for receiving the pointed bumps 61 and 63.
  • These bumps are made of a hardened material and it is also the actual wearing parts which, if blunt, are replaced. However, the solubility is not only due to wear, but also to achieve a work profile which is formed by a variable hump height and hump arrangement.
  • the hump 61 is the higher hump A and the hump 63 is the lower hump B. Together, they form a work profile.
  • the bump bed 60 is also designed here so that it contributes to the work profile.
  • the working profile causes a different breaking effect depending on the forceps opening, which can be used accordingly.
  • tables can be created on the basis of which the correct cusp beds and the corresponding cusps in the corresponding number can be read and selected for a specific breaking effect.
  • the cusp bed 60 is screwed onto the cutting lever 4 of the concrete pliers, for example, for which the screws 67 and 68 are shown.
  • the pincer bumps 61, 63 are inserted into the recesses 62, 64 in the bump bed. So that the pressure force transmission from the bumps to the bump bed is ensured on the one hand and the bumps can be easily removed from their seat again, the bumps in the seating area 61 ', 63' (slightly towards the bottom) are tapered.
  • the humps are fixed in the hump bed with cross pins 65, 66. Since the pincer bumps are not subjected to tension, this type of fixation is sufficient.
  • FIG. 7 shows an embodiment of a pincer with a hard metal tip, with which very good results were achieved.
  • the hard metal tip 70 is simply pressed into a steel bed 72 of the cusp and held by the press tension.
  • a heavy-duty clamping sleeve 73 serves as an intermediate insert between the bump bed and the steel bed for the hard metal tip of the entire pincer bump.
EP89810349A 1988-06-15 1989-05-11 Brechzange zum Abräumen von Bauwerken, insbesondere von Mauern aus armiertem Beton Expired - Lifetime EP0347371B2 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89810349T ATE92140T1 (de) 1988-06-15 1989-05-11 Brechzange zum abraeumen von bauwerken, insbesondere von mauern aus armiertem beton.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH230788 1988-06-15
CH2307/88 1988-06-15

Publications (3)

Publication Number Publication Date
EP0347371A1 EP0347371A1 (de) 1989-12-20
EP0347371B1 EP0347371B1 (de) 1993-07-28
EP0347371B2 true EP0347371B2 (de) 1997-01-22

Family

ID=4230741

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89810349A Expired - Lifetime EP0347371B2 (de) 1988-06-15 1989-05-11 Brechzange zum Abräumen von Bauwerken, insbesondere von Mauern aus armiertem Beton

Country Status (7)

Country Link
US (1) US4934616A (ja)
EP (1) EP0347371B2 (ja)
JP (1) JPH01322071A (ja)
AT (1) ATE92140T1 (ja)
DE (1) DE58905023D1 (ja)
FR (1) FR2632999A1 (ja)
IT (1) IT1230397B (ja)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5004168A (en) * 1989-11-13 1991-04-02 Brian Purser Crushing apparatus
DE4013126A1 (de) * 1990-04-25 1991-10-31 Helmut Wack Abbruchgeraet
US5044568A (en) * 1990-08-20 1991-09-03 Takachiho Kogyo Yuugen Kaisha Hand crusher with rotatably mounted handle
CH682988A5 (de) * 1991-02-04 1993-12-31 Zepf Hans Rudolf Anbauschere.
ES2028598A6 (es) * 1991-02-04 1992-07-01 Fernandez Sanchez Joaquin Procedimiento de exfoliacion de piezas de pizarra y maquina correspondiente.
DE4104856A1 (de) * 1991-02-16 1991-10-31 Krupp Maschinentechnik Antriebseinrichtung fuer ein abbruchwerkzeug
JP3063940B2 (ja) * 1992-07-07 2000-07-12 株式会社坂戸工作所 天然砕石塊破砕システム
JP2585939B2 (ja) * 1993-01-26 1997-02-26 大淀小松株式会社 破砕装置
JP2577181B2 (ja) * 1993-06-16 1997-01-29 大淀ヂ−ゼル株式会社 万能解体機
US5474242A (en) * 1994-10-11 1995-12-12 The Stanley Works Demolition tools with jaws having replaceable working surfaces
AT403491B (de) * 1996-02-15 1998-02-25 Wimmer Alois Ing Betonbrechzange mit schneidschere
DE59904659D1 (de) * 1999-12-30 2003-04-24 Franz Muri Betonbrechzange
US20060226271A1 (en) * 2003-12-15 2006-10-12 Seiichi Sakato Crusher and crushing method thereof
JP5148077B2 (ja) * 2006-06-07 2013-02-20 勇 藤森 油圧ショベル
GB2479487B (en) * 2006-09-27 2012-02-15 Caterpillar Inc Metal shears
USD752114S1 (en) * 2012-06-04 2016-03-22 Caterpillar Work Tools B.V. Multi-processor and modular wear protection system
KR101525797B1 (ko) * 2013-12-11 2015-06-03 정수동 굴삭기용 다용도 작업기기
CN105233438B (zh) * 2015-11-13 2018-10-23 钦州学院 防盗网快速破拆器
WO2017158372A1 (en) 2016-03-18 2017-09-21 Creative Crushers Ltd Pile croppers and methods for cutting piles

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE365127C (de) * 1918-09-12 1922-12-08 Rene Emile Trottier Backenbrecher mit zwei gegeneinander beweglichen, unter der Einwirkung eines Schwinghebels stehenden Brechbacken
JPS554416A (en) * 1978-06-23 1980-01-12 Watanabe Kaitai Kogyo Kk Cutter
JPS6062373A (ja) * 1983-09-16 1985-04-10 重水　昭彦 コンクリ−ト破砕機
DE3618191A1 (de) * 1986-05-30 1987-12-03 Michael Barnsteiner Betonbrechzange
FI872060A (fi) * 1986-10-29 1988-04-30 Veikko Yrjoe Johannes Impola Anordning foer krossning av konstruktioner.
US4838493B1 (en) * 1988-06-10 1994-12-06 Labounty Manufacturing Concrete crusher

Also Published As

Publication number Publication date
FR2632999A1 (fr) 1989-12-22
IT1230397B (it) 1991-10-21
IT8920887A0 (it) 1989-06-15
EP0347371B1 (de) 1993-07-28
EP0347371A1 (de) 1989-12-20
DE58905023D1 (de) 1993-09-02
US4934616A (en) 1990-06-19
ATE92140T1 (de) 1993-08-15
JPH01322071A (ja) 1989-12-27

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