EP0703184A1 - Pince pour anneau de regard - Google Patents

Pince pour anneau de regard Download PDF

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Publication number
EP0703184A1
EP0703184A1 EP95110806A EP95110806A EP0703184A1 EP 0703184 A1 EP0703184 A1 EP 0703184A1 EP 95110806 A EP95110806 A EP 95110806A EP 95110806 A EP95110806 A EP 95110806A EP 0703184 A1 EP0703184 A1 EP 0703184A1
Authority
EP
European Patent Office
Prior art keywords
group
clamping
jaws
clamping jaws
support frame
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
EP95110806A
Other languages
German (de)
English (en)
Other versions
EP0703184B1 (fr
Inventor
Florian Schmölz
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Individual
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Individual
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6912974&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0703184(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Publication of EP0703184A1 publication Critical patent/EP0703184A1/fr
Application granted granted Critical
Publication of EP0703184B1 publication Critical patent/EP0703184B1/fr
Anticipated expiration legal-status Critical
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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
    • B66C1/54—Internally-expanding grippers for handling hollow articles
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
    • E02D29/14—Covers for manholes or the like; Frames for covers
    • E02D29/1445—Tools for positioning or removing cover frames

Definitions

  • the invention relates to a shaft ring gripper with a support frame which has a first group of three clamping jaws lying at an angular distance of 120 ° to one another in a horizontal plane.
  • Manhole ring grippers of this type use chain-like pliers-like clamping devices, each with two clamping jaws, which rest on the inside and outside of the pipe wall and clamp the pipe wall between them when the support frame is lifted. It is disadvantageous that the operator of the device has to leave the control station in order to position the clamping jaws. Another disadvantage is that shaft rings can be transported and displaced in the vertical position, but not so-called cones, which taper upwards from the shaft ring diameter to the manhole cover diameter. Such cones have the shape of an oblique truncated cone because the shell must run perpendicular to a surface line, where stirrups are attached for accessing the shaft.
  • Such a cone for a shaft pipe width of 1000 mm has a manhole cover opening of 600 mm. If such cones are gripped by the manhole gripper at the manhole cover opening, they hang askew because of the eccentric center of gravity, which is why placing a cone on a manhole is problematic.
  • the object of the invention is to provide a manhole ring gripper that can be operated by an operator only from the control station of the device and with which not only manhole rings, but also the associated cones can be moved without problems, without having to make adjustments to the manhole ring gripper.
  • the support frame has three at least approximately radially directed guide bodies at the same distance from a vertical central axis of the support frame, in each of which a clamping member equipped with a clamping jaw, preferably a slide, is movably mounted that the support frame is a, has coaxial guide member to the central axis, in which a tension element is guided axially displaceably, that the tension element is connected to an axial-radial displacement converter, which in turn is connected to the slides in such a way that the jaws are moved synchronously radially when the tension element is axially displaced relative to the guide element, that at the upper end of the pulling element there is provided a suspension means for a load lifter, that a second group of three displaceable clamping jaws is provided on the supporting frame in a parallel plane lying below the horizontal plane of the first group of clamping jaws, the clamping plane of which cken on a smaller diameter than that of the first group, that the suspension means has a first coaxial suspension position for the load
  • the manhole ring gripper works with a new clamping principle in which the clamping jaws are moved radially outwards when the support frame is lifted until it rests against the inner surface of the chess ring.
  • the weight of the shaft ring is converted with high efficiency into the radially outward clamping forces.
  • With the three clamping jaws on the inside of the manhole ring it can be securely picked up, transported and moved.
  • the load-bearing frame is relieved.
  • the tension element moves the jaws radially inwards into an inoperative position.
  • the clamping elements can also consist of swivel levers instead of linearly movable slides.
  • the suspension means must be brought into the second suspension position, which may or may not require manual adjustment by the operator. It is namely within the scope of the invention to shift the suspension means from the first suspension position into the second suspension position by lowering, pivoting and lifting again without the operator having to leave the control position.
  • the distance between the two suspension positions corresponds to the eccentricity of the center of gravity of a shaft cone from the axis of the manhole cover opening.
  • Both groups of clamping jaws can have their own axial radial displacement converters, which, for. B. can work on the wedge principle, the toggle principle or a combination of these principles.
  • Two jaws of both jaw groups are preferably arranged in an axial plane and rigidly connected to each other, so that an axial-radial displacement converter is sufficient for this pair of jaws.
  • a further development of the invention is that the tension element protrudes from the guide element on the bottom side and at its end lying below the horizontal plane of the first group of clamping jaws, three links are pivotally mounted, which extend obliquely upward to one of the sliders and fastened to this or to it Connection piece are articulated.
  • the loaded tension element must be relieved in order to be able to release the clamping jaws from the shaft ring.
  • support plates are provided above the radial planes of the two jaw groups, which protrude radially outwards from their respective associated jaws. These support plates provided on the support frame then serve to support the support frame on the shaft ring.
  • the suspension means is lowered further, for example a crane hook, the weight of the tension element ensures that the jaws are released.
  • the guide bodies for the slides of the jaws of the first group are used for the lower second group of clamping jaws, while three additional radial support irons are welded to the support frame for the clamping jaws of the first group.
  • the sliding directions of the slides in the guide bodies extend slightly outwards with respect to the horizontal plane at a small angle.
  • the clamping jaws are pivotally mounted on their slides or the connecting pieces attached to them and are preloaded in terms of weight or spring, in which they rest against a stop.
  • the coupling device can include an automatic system which ensures that the successive lowering movements of the tension element in the guide element alternately unlock and lock. This can be achieved, for example, by means of a swivel pawl on the guide member of the support frame, which is supported in the coupling position on a stop of the tension element, so that the tension element and the support frame are coupled for common movement and which can be pivoted into an unlocking position in order to decouple the tension element from the guide element .
  • the suspension means has a vertical plate with a slot arrangement, that a hook adjacent to the plate or two hooks on both sides of the plate protrude upward on the guide element, which form the coupling device and engage in the contour of the slot arrangement, and that the load lifter has a support bolt movable in the slot arrangement.
  • the operator therefore only needs to lower the support bolt, then pivot it slightly away in the slot arrangement of the plate under the hook and then pull it up again, the bolt automatically reaching the coaxial suspension position in the slot arrangement.
  • a particularly advantageous development consists in the fact that the slot arrangement has an essentially V-shaped curved or angled slot path, the upper ends of which form the two suspension positions for the two unlocking positions, specifically for shaft ring and shaft cone operation.
  • the operator can thus move the support bolt from the control position from one suspension position to the other if he has to transport a shaft cone instead of a shaft ring and vice versa.
  • the distance between the two suspension positions is in the range from 40% to 60% of half the diameter of the clamping jaws of the second lower group and is preferably about 50% of that measure.
  • the center of gravity of the shaft cone is then at least approximately below this second suspension position, which is offset from the coaxial suspension position.
  • the manhole ring gripper 10 has a support frame 12 which consists of a horizontal triangular frame 14 which carries a vertical guide tube 18 by means of radial struts 16.
  • An approximately radially directed guide bushing 20 is welded to each of the three corners of the triangular frame 14, from which a diagonal strut 22 extends obliquely upward inwards to the guide tube 18.
  • a rod-shaped slide 22 is slidably mounted in each guide bush 20, slidably mounted. The sliding direction of the slide 22 extends slightly upwards in an axial plane at a small angle.
  • Each of the three slides 22 carries at its front end a clamping jaw 24, the clamping surface of which is convexly curved and toothed to improve the holding function.
  • the jaw 24 is pivotally mounted in its lower half on the slide 22 and has a weight arm 26 projecting towards the rear, for which the guide bush 20 forms a stop.
  • the jaw 24 can thus pivot clockwise (FIG. 1) to reinforce the clamping engagement.
  • a pull rod 28 is guided to be vertically displaceable.
  • the pull rod 28 protrudes from the guide tube 18 on both sides, is slotted at its upper end and welded to a vertical plate 30 inserted into the slot.
  • a flange 32 is screwed, on which three links 34 are pivotally mounted, which extend inclined radially outwards and are pivotably mounted on a connecting plate 36, which in turn is welded to the rear end of the respective slide 22 is.
  • the connecting plate 36 extends downward from the slide 22 and serves at the lower end for the pivotable mounting of a further clamping jaw 38, which corresponds to the clamping jaw 24 and also has a rear weight arm, around the clamping jaw 38 in a starting position in contact with the end wall of the connecting plate 36 to keep.
  • the support frame 12 thus has a first group of three clamping jaws 24, which lie in a horizontal plane, and a second group of three clamping jaws 38, which are arranged in a parallel plane lying below this horizontal plane and have a diameter which is approximately 60% of the diameter of the first group of clamping jaws 24 is.
  • the vertical plate 30 at the upper end of the pull rod 28 has a slot arrangement 40, which consists of an angled, approximately V-shaped slot track 42 and a track extension 44 starting from its right track branch.
  • a support pin 46 is guided in the slot arrangement 40 and is fastened to a fork 48 of a hydraulic lifter.
  • the upper end of the right-hand path branch of the slot path 42 forms a first coaxial suspension position 50 for the supporting bolt 46.
  • a second suspension position 52 is formed at the upper end of the slot path 42 at the upper end thereof, which is approximately the same horizontal distance from the first suspension position 50 has half the center distance of the lower clamping jaws 38 from the central axis of the shaft ring gripper 10, designated 54.
  • the web extension 44 runs approximately parallel to the left web section of the slot web 42, but offset to this up to a vertical plane, which the support pin 46 in the position shown in FIG. 1 affected outside. In the coupling position of the pull rod 28 on the support frame 12, the support pin 46 is located at the upper end of the web extension 44, namely coaxially to the central axis 54.
  • the coupling is effected by means of a hook 56 which is welded to the outside of the guide tube 18, namely along a vertical area which forms an angle of approximately 30 ° with the vertical plane containing the axis of the support bolt 46, so that the position of the hook 56 in FIG. 1 appears offset inwards.
  • the hook 56 protrudes into the contour of the web extension 44.
  • the upper end of the web extension 44 is semicircular in accordance with the inner contour of the hook 56, so that there is a projecting nose 58 for the lower limitation of the right-hand slot web section, which for transferring the support pin 46 from the first suspension position 50 into the coupling position according to FIG. 1 serves.
  • a radial, horizontal support arm 60 is also welded to each diagonal strut 22 and projects beyond the outer clamping jaw 24 arranged below it to the outside.
  • the manhole ring gripper 10 hangs on the lifting bolt 46, in which in FIG. 1 position shown.
  • the jaws 24, 38 are located yourself in an inwardly retracted position.
  • the support frame 12 can thus be retracted into a manhole ring until it rests on the three support arms 60.
  • a further lowering of the support bolt 46 leads it downward in the web extension 44.
  • the pull rod 28 only lowers until its plate 30 is seated on the guide tube 18.
  • the pivot pin 46 reaches the left flank of the web extension 44 by slight pivoting on the boom of the load lifter. Then the operator switches to "lifting" and the pivot pin 46 arrives in the right branch of the slot web 42 and is then forcibly guided into the first coaxial suspension position 50 .
  • the pull rod 28 extends upwards out of the guide tube 18, the links 34, which act as an axial-radial displacement converter, moving the slides 22 outwards and their clamping jaws 24 being pressed against the inner surface of the shaft ring. Thanks to their swiveling, automatic fine adjustment takes place.
  • the manhole gripper 10 jams on the manhole ring and takes it along with the further upward movement.
  • the manhole ring hangs exactly horizontally and can therefore be placed exactly on a previously staggered manhole ring.
  • a slight lowering of the support bolt 46 then leads it along the nose 58 of the plate 30 into the bottom extension 44, in which it can be lifted afterwards, if necessary after being supported by slightly pivoting the boom of the load lifter into the position shown in FIG. 1 shown clutch position arrives.
  • the downward movement of the support bolt 46 results in a lowering of the pull rod 28, so that the clamping jaws 24 become detached from the shaft ring.
  • the support frame 12 can thus be lifted out of the shaft ring again.
  • the shaft ring gripper 10 is shown in FIG. 1 shown in the manhole cover opening of the shaft cone with its lower jaws 38 retracted.
  • Usual manhole cones have a manhole cover diameter of 600 mm.
  • the jaws 38 of the lower jaw group are adjusted to this dimension.
  • the support pin 46 must be moved out of the web extension 44 into the slot track 42 in the manner already described, but now into the left branch of this slot track 42 until the support pin 46 reaches the second suspension position 52. This lies above the center of gravity of the shaft cone, so that when it is raised further, the lower group of clamping jaws 38 is placed on the wall of the shaft cone, clamped, and the shaft cone can then be transported in a horizontal position.
  • the shaft ring gripper 10 should be aligned with its plate 30 when transporting shaft cones with respect to the axial plane of the shaft cone into which the axes of the two cone openings fall. This can be accomplished very simply in that the plate 30 is aligned with one of the support arms 60. This support arm 60 is aligned with the vertical jacket area of the shaft cone, the crampons in the interior of the shaft cone being an orientation aid. An important detail of this invention is therefore that the plate 30 lies with one of the extension arms 60 in an axial plane.

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Blast Furnaces (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
EP95110806A 1994-08-30 1995-07-11 Pince pour anneau de regard Expired - Lifetime EP0703184B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9413933U DE9413933U1 (de) 1994-08-30 1994-08-30 Schachtgreifer
DE9413933U 1994-08-30

Publications (2)

Publication Number Publication Date
EP0703184A1 true EP0703184A1 (fr) 1996-03-27
EP0703184B1 EP0703184B1 (fr) 1997-05-21

Family

ID=6912974

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95110806A Expired - Lifetime EP0703184B1 (fr) 1994-08-30 1995-07-11 Pince pour anneau de regard

Country Status (4)

Country Link
EP (1) EP0703184B1 (fr)
AT (1) ATE153310T1 (fr)
DE (2) DE9413933U1 (fr)
ES (1) ES2103619T3 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004044615A1 (de) * 2004-09-13 2006-03-30 Schmölz, Florian Universelle Greif- und Hebevorrichtung für zylindrische Körper
WO2007028794A3 (fr) * 2005-09-07 2007-05-10 Antec Ltd Dispositif de prehension pour anneau de puits
DE102010016123A1 (de) 2010-03-24 2011-09-29 Florian Schmölz Schachtringgreifer
DE102015121798A1 (de) 2015-12-15 2017-06-22 WIMAG GmbH Ringgreifer
DE102016106412B4 (de) 2016-04-07 2022-02-24 Probst Gmbh Greif- und Hebevorrichtung für ein Greifgut

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010036549A1 (de) * 2010-07-21 2012-01-26 Florian Schmölz Schachtringreifer
DE202011110120U1 (de) 2011-09-12 2012-11-21 Florian Schmölz Hebezeug zum Umsetzen einer Verbaubox
CN105174039A (zh) * 2015-09-17 2015-12-23 成都中机盈科科技有限公司 一种u型石墨坩埚起吊系统
CN116537340B (zh) * 2023-05-18 2026-05-08 湖南德泰建筑工程有限公司 一种房屋排水铺管装置及方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2809070A (en) * 1955-02-28 1957-10-08 Western Electric Co Grapples
US2823948A (en) * 1955-12-21 1958-02-18 Kenneth W Horton Grab for lifting hollow objects
DE1248887B (fr) * 1965-02-08 1967-08-31
AT331458B (de) * 1974-03-01 1976-08-25 Semmelrock Kg Vorrichtung zum verladen von schachtringen od.dgl.
FR2380216A1 (fr) * 1977-02-14 1978-09-08 Filliette Gerard Pince pour pose et levage d'elements prefabriques et autres
DE3808644C1 (fr) * 1988-03-15 1989-07-13 Deutsche Gesellschaft Fuer Wiederaufarbeitung Von Kernbrennstoffen Mbh, 3000 Hannover, De
DE4221819A1 (de) * 1992-07-03 1994-01-13 Ulrich Rein Innengreifer zum Erfassen und Handhaben von Beton-Hohlformteilen

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2809070A (en) * 1955-02-28 1957-10-08 Western Electric Co Grapples
US2823948A (en) * 1955-12-21 1958-02-18 Kenneth W Horton Grab for lifting hollow objects
DE1248887B (fr) * 1965-02-08 1967-08-31
AT331458B (de) * 1974-03-01 1976-08-25 Semmelrock Kg Vorrichtung zum verladen von schachtringen od.dgl.
FR2380216A1 (fr) * 1977-02-14 1978-09-08 Filliette Gerard Pince pour pose et levage d'elements prefabriques et autres
DE3808644C1 (fr) * 1988-03-15 1989-07-13 Deutsche Gesellschaft Fuer Wiederaufarbeitung Von Kernbrennstoffen Mbh, 3000 Hannover, De
DE4221819A1 (de) * 1992-07-03 1994-01-13 Ulrich Rein Innengreifer zum Erfassen und Handhaben von Beton-Hohlformteilen

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004044615A1 (de) * 2004-09-13 2006-03-30 Schmölz, Florian Universelle Greif- und Hebevorrichtung für zylindrische Körper
WO2007028794A3 (fr) * 2005-09-07 2007-05-10 Antec Ltd Dispositif de prehension pour anneau de puits
DE102010016123A1 (de) 2010-03-24 2011-09-29 Florian Schmölz Schachtringgreifer
DE102015121798A1 (de) 2015-12-15 2017-06-22 WIMAG GmbH Ringgreifer
DE102015121798B4 (de) * 2015-12-15 2021-01-21 WIMAG GmbH Ringgreifer
DE102016106412B4 (de) 2016-04-07 2022-02-24 Probst Gmbh Greif- und Hebevorrichtung für ein Greifgut

Also Published As

Publication number Publication date
ATE153310T1 (de) 1997-06-15
DE59500252D1 (de) 1997-06-26
DE9413933U1 (de) 1994-12-01
ES2103619T3 (es) 1997-09-16
EP0703184B1 (fr) 1997-05-21

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