EP0035159A2 - Pince pour éléments en béton en forme de dalles - Google Patents

Pince pour éléments en béton en forme de dalles Download PDF

Info

Publication number
EP0035159A2
EP0035159A2 EP81101101A EP81101101A EP0035159A2 EP 0035159 A2 EP0035159 A2 EP 0035159A2 EP 81101101 A EP81101101 A EP 81101101A EP 81101101 A EP81101101 A EP 81101101A EP 0035159 A2 EP0035159 A2 EP 0035159A2
Authority
EP
European Patent Office
Prior art keywords
lever
toggle lever
toggle
arm
clamp
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
EP81101101A
Other languages
German (de)
English (en)
Other versions
EP0035159A3 (en
EP0035159B1 (fr
Inventor
Martin Probst
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.)
SF-Vollverbundstein-Kooperation GmbH
Original Assignee
SF-Vollverbundstein-Kooperation GmbH
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 SF-Vollverbundstein-Kooperation GmbH filed Critical SF-Vollverbundstein-Kooperation GmbH
Priority to AT81101101T priority Critical patent/ATE13703T1/de
Publication of EP0035159A2 publication Critical patent/EP0035159A2/fr
Publication of EP0035159A3 publication Critical patent/EP0035159A3/de
Application granted granted Critical
Publication of EP0035159B1 publication Critical patent/EP0035159B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/42—Gripping members engaging only the external or internal surfaces of the articles
    • B66C1/44—Gripping members engaging only the external or internal surfaces of the articles and applying frictional forces
    • B66C1/442—Gripping members engaging only the external or internal surfaces of the articles and applying frictional forces actuated by lifting force
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/52—Apparatus for laying individual preformed surfacing elements, e.g. kerbstones

Definitions

  • the invention relates to a clamp for plate-shaped concrete elements, in particular for laying units consisting of loosely placed concrete paving stones, for receiving, transporting and depositing (laying) the same with a cart-shaped laying device, the plate-shaped concrete elements being detectable by at least two clamping jaws engaging on opposite narrow upright side surfaces are.
  • the invention relates to a special field of civil engineering, namely mechanical engineering Positioning of soil covers made of concrete paving stones using a laying device.
  • the above mechanized laying method works on the basis of the use of laying units. These consist of a group of paving stones, which are put together in a relative arrangement corresponding to the finished paving slab to form a plate-like structure and are recorded one after the other with laying devices and laid on a prepared subgrade.
  • the invention is therefore based on the object to provide a bracket for the transport and laying of loose, not interconnected paving stones laying units, which is simply constructed by using only mechanical means.
  • the clip according to the invention is characterized in that at least one of the clamping jaws is arranged on a two-armed lever which can be acted upon by a pressure element, the force arm of which is several times longer than the load arm receiving the clamping jaw.
  • the mechanical pressure element which according to the invention consists of at least one toggle lever which, in the clamping position of the clamping jaws, is brought almost into its extended position.
  • the invention is based on the knowledge that loose concrete paving stones can only be held together and laid to form a laying unit if very high clamping forces are introduced into the laying unit from the sides by the clamping jaws of a clamp.
  • these high clamping forces are generated primarily by the toggle lever, which acts on the long load arm of at least one two-armed lever with a clamping jaw.
  • the toggle lever is preferably dimensioned and designed in a special way that in the clamped position the toggle lever has almost reached the extended position, deviates from this 180 ° position only by a few degrees. As a result, an exceptionally high force is transmitted to the two-armed lever or to the clamping jaw (s) during the last phase of the stretching movement of the toggle lever.
  • the toggle lever is variable in length so that adjustments are possible. Furthermore, a length compensation element in the form of a heavy-duty compression spring is installed in the toggle lever. The spring force is dimensioned such that the stretched position of the toggle lever is not reached for a given load, but on the other hand, deformations or fractures causing the toggle lever are compensated for.
  • the toggle lever is acted upon by the laying device itself, namely by lifting the (loaded) clamp.
  • the bracket 10 shown in Fig. 1 is intended for attachment to a laying device, for example in the version of DE-A-22 41 503.
  • a boom 11 or the free end of the same is shown schematically in Fig. 1.
  • a support element 12 designed as a simple bracket, rod or fork-shaped is pivotably arranged.
  • the bracket 10 is detachably attached in a suitable manner, such that it is carried hanging by the boom 11.
  • the clamp 10 is used to grasp, carry and place laying units 13. These are plate-shaped elements made of a plurality of concrete paving stones 14, which are loosely placed together. Spacers 15 formed laterally on the concrete paving stones 14 ensure a relative arrangement.
  • the clamp 10 shown here is equipped with two opposing clamping jaws 16 and 17. These capture the laying unit 13 in the region of opposing upright side surfaces 18 and 19.
  • the jaw 16 is fixed in the embodiment of FIG. 1, while the opposite jaw 17 is movable to open and close the clamp 10 and to apply the clamping forces.
  • the clamping jaw 17 forms the load arm 20 of a pivotably mounted two-armed lever 21.
  • This load arm 20 is relatively short, namely only insignificantly longer than the height dimension of the clamping jaw 17 itself the load arm 20.
  • the lever 21 is angled in the region of its pivot bearing 23 such that in the clamped position the load arm 20 is arranged essentially upright, while the power arm 22 points outward at an acute angle.
  • the clamping jaws 16 and 17 or the lever 21 are arranged on a support frame which, in the present case, is designed as a cross member 24 which is centered with respect to the laying unit 13.
  • the fixed clamping jaw 16, which runs transversely to this cross member 24, is adjustably arranged on the cross member 24 in order to adapt to different dimensions of the laying units 13, by means of releasable screws 25.
  • the lever 21 or the power arm 22 of the same are acted upon by a special pressure element.
  • This consists of a toggle lever 26 which in a pivot bearing 27 the free end of the lever 21 is connected. The opposite end is fixed in a further pivot bearing 28. In the exemplary embodiment in FIG. 1, this is arranged in or on a bearing block 29 which is fixed in position on the cross member 24.
  • the toggle lever 26 consists of the toggle lever arms 30 and 31. These are connected to one another in a toggle lever joint 32.
  • the support element 12 of the laying device also acts on the clamp 10.
  • the toggle lever 26 transmits the closing or clamping force to the clamp 10, namely to the clamping jaw 17.
  • the toggle arms 30, 31 are pivoted downwards relative to one another and are therefore at a clear angle to one another.
  • the jaw 17 is also pivoted into an inclined position, while the power arm 22 is substantially upright.
  • the bracket 10 is now "open".
  • the toggle lever 26 is moved from the dashed position (kink position) by lifting the clamp 10 into the extended position or into a position which almost corresponds to the extended position.
  • the pivoting movement of the toggle arms 30 and 31 is carried out by the upward movement of the boom 11.
  • the clamping jaw 17 is pressed against the laying unit 13 by the pivoting movement of the lever 21.
  • FIG. 2 The individual phases of movement of the toggle lever 26 and the clamp parts connected to it are shown schematically in FIG. 2.
  • the upper line shows the end position of the toggle lever 26, which is always "below” the extended position, but only deviates from it by a few degrees.
  • the toggle arms 30, 31 are not of the same length in FIG. 1.
  • the toggle arm 31 is variable in length by a telescopic design.
  • a rod 33 leading in the present case to the toggle lever 32 is telescopically displaceable in a tube 34.
  • the above telescopic parts (rod 33, tube 34) are supported against each other by an elastic compensating element in the form of a heavy-duty compression spring 35.
  • This is supported on the one hand on a stop 36 (screw nut) of the rod 33 and on the other hand on the front end of the tube 34.
  • the compression spring 35 At extremely high axial loads in the area of the toggle arm 31, the compression spring 35 is compressed to avoid deformations and destruction. However, the spring force is selected so that the "usual" loads can be absorbed without the toggle lever 26 being moved to the exact extended position.
  • the stop 36 is adjustable so that a bias of the compression spring 35 can be changed.
  • the rod 33 emerging from the tube 34 on the side opposite the compression spring 35 is fixed at the front end of the tube 34 by a support screw 37.
  • the tube 34 is connected to the lever 21 as part of the toggle lever arm 31 via the externally attached pivot bearing 27.
  • the tube 34 is also slidably arranged on the rod 33, that is to say held only by compression spring 35 and support screw 37.
  • the clip 10 is equipped with a special lock 38, which ensures the position of the clip 10 required for the respective functional sequence. Details of an embodiment of this lock 38 are shown in FIGS. 3 to 5.
  • pawls 40, 41 are mounted in a U-shaped holder 39, namely a (lower) pawl 40 and an upper one Setting pawl 41.
  • the aforementioned pawls 40, 41 are pivotally and translationally displaceably mounted in the holder 39 designed as a housing.
  • the (upper) pawl 41 is mounted with an angle hole 42 on a transverse pin 43 attached to the holder 39.
  • the pawl 40 with an elongated hole 45 is also arranged on a pin 44.
  • Pawl 40 and pawl 41 are also pivotally coupled to each other by a connecting pin 46.
  • the relative position and design of the pawls 40, 41 is such that they protrude laterally with parts from the holder 39 in certain positions.
  • the lock 38 is assigned an actuating member in the form of a (rigid) extension 47 of the toggle lever 26, namely the toggle arm 30, beyond the toggle joint 32.
  • This extension 47 which is designed as a flat profile, is moved laterally past the lock 38, namely the holder 39, in the vertical plane during the movements of the toggle lever 26 in such a way that the parts of the pawls 40, 41 projecting from the holder 39 are acted upon.
  • the aim is to fix the opening position (dashed lines) of the clamp 10, namely when it is fed to a laying unit 13 for receiving the same without load.
  • the extension 47 which naturally follows the pivoting movements of the toggle lever arm 30, is directed downward and lies against the underside of a nose 48 of the pawl 40 protruding from the holder 39. The latter is thereby turned counterclockwise.
  • a stop piece 49 of the pawl 40 is thereby in contact with a support wall 50 of the holder 39.
  • the pawl 40 or its nose 48 are thereby fixed in the position shown in FIG. 3.
  • the extension 47 is held in the lower position.
  • the toggle lever 26 cannot be moved into the position adjacent to the extended position, corresponding to the closed position of the clamp 10, despite the load from the boom 11.
  • the knee lever 26 is relieved, with the result that the extension 47 is released from the underside of the nose 48.
  • the unloaded detent pawl 40 pivots counterclockwise from the position shown in FIG. 3 to that shown in FIG. Fig. 3) migrates to the upper end position (Fig. 4).
  • the extension 47 can be moved past the pawl 40 or the nose 48 by moving the toggle lever 26 in the direction of the extended position.
  • the adjusting pawl 41 which also protrudes beyond the holder 39 in the starting position (FIG. 3), is acted upon by the extension 47, which is moved further upward, and is thereby moved inward with simultaneous pivoting.
  • the adjusting pawl 41 moves from the position according to FIG. 4 into that according to FIG. 5. This is accompanied by a downward movement of the adjusting pawl 41.
  • This movement in turn is transmitted via the connecting pin 46 to the pawl 40, with the result that it is moved into a standby position (FIG. 5) in which the nose 48 protrudes from the holder 39 and into the movement path of the extension 47 .
  • the clamp 10 according to FIGS. 1 to 5 therefore works automatically without manual intervention, solely by movements of the same from the handle of the laying device.
  • FIG. 6 An alternative embodiment of the clip 10 is shown in FIG. 6.
  • two two-armed levers 51 and 52 are provided to act on one jaw 16, 17 each.
  • the levers 51, 52 are mounted with a pivot bearing 53, 54 in the manner described in principle at the ends of the support frame, namely the cross member 24.
  • a toggle lever 55 is formed in this embodiment from two substantially identical toggle lever arms 56, 57. These each connect to the free ends of the levers 51, 52 via a rotary bearing 58, 59.
  • the mutually facing ends of the toggle lever arms 56, 57 are pivotally or articulatedly connected to one another, preferably via a common hinge pin 60.
  • the toggle lever arms 56, 57 are also variable in length here, specifically in the exemplary embodiment shown by means of a turnbuckle 63 of a type known in principle.
  • a pawl 64 is pivotally arranged on the guide bracket 61. In the extended, inwardly pivoted position, this pawl 64 rests with a support lug on the hinge pin 60 and thus prevents its upward movement even under load. To unlock the toggle lever 55, the pawl 64 is pulled back into the dashed position, whereby the hinge pin 60 is released. In the present case, the movements of the pawl 64 are triggered by a Bowden cable 65, which expediently leads to the operating side of the laying device, in particular to a handle. The clamp 10 can thus be operated from the handle of the laying device.
  • the clamping jaws 16 and 17 are provided with heavy-duty, elastically compressible coverings 66 on the clamping side. These allow the laying units to be gripped elastically.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
  • Road Paving Structures (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • Magnetic Heads (AREA)
  • Clamps And Clips (AREA)
  • Panels For Use In Building Construction (AREA)
  • Moulds, Cores, Or Mandrels (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
  • Revetment (AREA)
  • Road Paving Machines (AREA)
EP81101101A 1980-02-22 1981-02-17 Pince pour éléments en béton en forme de dalles Expired EP0035159B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81101101T ATE13703T1 (de) 1980-02-22 1981-02-17 Klammer fuer plattenfoermige betonelemente.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3006652 1980-02-22
DE19803006652 DE3006652A1 (de) 1980-02-22 1980-02-22 Klammer fuer plattenfoermige betonelemente

Publications (3)

Publication Number Publication Date
EP0035159A2 true EP0035159A2 (fr) 1981-09-09
EP0035159A3 EP0035159A3 (en) 1982-02-24
EP0035159B1 EP0035159B1 (fr) 1985-06-05

Family

ID=6095291

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81101101A Expired EP0035159B1 (fr) 1980-02-22 1981-02-17 Pince pour éléments en béton en forme de dalles

Country Status (8)

Country Link
EP (1) EP0035159B1 (fr)
JP (1) JPS56161287A (fr)
AT (1) ATE13703T1 (fr)
CA (1) CA1153602A (fr)
DE (2) DE3006652A1 (fr)
DK (1) DK76281A (fr)
ES (1) ES265248Y (fr)
NO (1) NO810518L (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2539775A1 (fr) * 1983-01-21 1984-07-27 Luymes & Bal Aanneming Procede de pavage et grappin pour sa mise en oeuvre
EP0559188A1 (fr) * 1992-03-04 1993-09-08 Siegfried Bolz Dispositif pour manipuler des pièces à usiner lourdes
EP1209290A1 (fr) * 2000-11-22 2002-05-29 Laurijssen B.V.B.A. Dispositif de pavage
CN107425465A (zh) * 2017-05-12 2017-12-01 国网冀北电力有限公司秦皇岛供电公司 单片绝缘子吊装装置
CN116040467A (zh) * 2023-02-17 2023-05-02 中铁建工集团有限公司 一种自制简易型玻璃夹具

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2808983C (fr) 2013-03-05 2019-06-25 Techo-Bloc Inc. Appareil de transport et procede pour le transport, l'orientation et l'installation d'une unite de blocs de pavage

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB783433A (en) * 1954-10-11 1957-09-25 Welding Ind Ltd Improvements in load gripping devices
US2866660A (en) * 1955-08-03 1958-12-30 L A Spring & Wire Corp Block-lifting grab
GB823664A (en) * 1956-03-21 1959-11-18 Uddeholms Ab Improvements in lifting device
CH406978A (de) * 1961-04-11 1966-01-31 Moskopf Peter Einrichtung zum Laden, Entladen, Stapeln und Transportieren von horizontal liegendem Gut
FR1392875A (fr) * 1964-04-10 1965-03-19 Appareil de manutention et de levage
DE2853656C2 (de) * 1978-12-13 1986-06-26 Optimas Bauelemente u. Baugeräte GmbH, 2915 Saterland Gerät zum Verlegen von Pflastersteinen

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2539775A1 (fr) * 1983-01-21 1984-07-27 Luymes & Bal Aanneming Procede de pavage et grappin pour sa mise en oeuvre
EP0559188A1 (fr) * 1992-03-04 1993-09-08 Siegfried Bolz Dispositif pour manipuler des pièces à usiner lourdes
EP1209290A1 (fr) * 2000-11-22 2002-05-29 Laurijssen B.V.B.A. Dispositif de pavage
BE1013850A5 (nl) * 2000-11-22 2002-10-01 Laurijssen B V B A Inrichting voor het leggen van straatstenen.
CN107425465A (zh) * 2017-05-12 2017-12-01 国网冀北电力有限公司秦皇岛供电公司 单片绝缘子吊装装置
CN107425465B (zh) * 2017-05-12 2024-04-23 国网冀北电力有限公司秦皇岛供电公司 单片绝缘子吊装装置
CN116040467A (zh) * 2023-02-17 2023-05-02 中铁建工集团有限公司 一种自制简易型玻璃夹具

Also Published As

Publication number Publication date
ES265248U (es) 1983-02-16
JPS56161287A (en) 1981-12-11
NO810518L (no) 1981-08-24
DE3170797D1 (en) 1985-07-11
EP0035159A3 (en) 1982-02-24
DE3006652A1 (de) 1981-08-27
EP0035159B1 (fr) 1985-06-05
ATE13703T1 (de) 1985-06-15
DK76281A (da) 1981-08-23
CA1153602A (fr) 1983-09-13
ES265248Y (es) 1983-08-01

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