EP0669279B1 - Teleskopierstab - Google Patents
Teleskopierstab Download PDFInfo
- Publication number
- EP0669279B1 EP0669279B1 EP95101719A EP95101719A EP0669279B1 EP 0669279 B1 EP0669279 B1 EP 0669279B1 EP 95101719 A EP95101719 A EP 95101719A EP 95101719 A EP95101719 A EP 95101719A EP 0669279 B1 EP0669279 B1 EP 0669279B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- telescopic bar
- cylinder unit
- sections
- accordance
- 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
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/64—Jibs
- B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
- B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
- B66C23/705—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic telescoped by hydraulic jacks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/64—Jibs
- B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
- B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
- B66C23/707—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic guiding devices for telescopic jibs
Definitions
- the invention relates to a telescopic rod with the features of The preamble of claim 1.
- Such telescopic rods are z. B. as a telescopic boom in a vehicle or Rail crane used as a cantilever arm of a truck loading crane or as a telescopic arm at a working platform.
- the telescopic rod consists of several tube-like shots which are slidably mounted one inside the other.
- the cross section of this tubular shots can be round, oval or polygonal. In the latter case acts it is box-like profile cross-sections.
- the to extend the telescopic rod serving multi-stage piston-cylinder unit is arranged within the rod and the number of steps can be the number of shots of the telescopic rod correspond. However, this does not necessarily have to be the case.
- a return device of its own which can consist of a rope or a chain that is inside the telescopic rod lies on the one hand with the last extendable shot and on the other hand is connected to a winding device.
- the extendable part of the piston rod is a large one Length, one usually sees a piston rod with a large diameter that has the required kink resistance. However, if you Increased diameter of the piston rod, you have to use a cylinder accordingly provide larger dimensions so that there is a greater weight and thereby increase the manufacturing costs.
- the invention is therefore based on the object of structurally simple measures to propose the kink resistance of the multi-stage piston-cylinder unit to improve or increase what according to the invention by those measures manages the content and subject of the characterizing part of the claim 1 are. Thanks to the proposal according to the invention, the high Kink stiffening of the piston-cylinder unit achieved in that part of the collar Abutment provided in the base or foot area of the individual shots are, in part by abutments that the different diameters of the individual stages of the piston-cylinder unit adapt themselves without separate and complex drive means must be provided for this.
- the telescopic rod which is shown moved together in FIG. 1, has five one inside the other Slidable shots (1, 2, 3, 4, 5) on a circumferentially closed Cross section.
- This cross section can be round, oval, but also polygonal.
- the first shot 1 is at one end in a not shown here Shape stored, which essentially depends on the purpose of the telescopic rod judges. If it is a jib for a mobile crane, it is the telescopic rod by one perpendicular to the drawing plane and one in the axis lying in the drawing plane can be pivoted.
- the individual shots 1 to 5 are guided in a suitable manner.
- a multi-stage, single-acting piston-cylinder unit 13 arranged here only with the first shot 1 on the Position 6 and with the last shot in the row 5 at point 10 is connected.
- the number of stages of the piston-cylinder unit 13 can be different from the number of shots 1 to 5 of the telescopic rod.
- the last in line Shot 5 carries at its free end a head flange 16, also other construction elements can be specified here, depending on the application the telescopic rod is provided.
- This abutment 7 here consists of a ring 20, which is the piston-cylinder unit 13 encloses with some play.
- This ring 20 is spoke-like Bracing with the inside of the base area of the second Shot 2 connected.
- individual ones can also be used radially extending webs may be provided.
- a collar 15 is fixed, in which several, parallel to the axis of the Telescopic rod extending guide rails 14 are slidably mounted. At their outer end, these guide rails 14 are with a within the last shot 5 slidably arranged, preferably on the Inner wall of this shot 5 connected hub 22 connected. This hub is 22 in the middle with little play from the last stage 23 of the piston-cylinder unit 13 enforced.
- An abutment 8 comparable to the fixed abutment 7 is also in the base area the last shot 5 arranged.
- abutments 18 and 19 are here by means of pawls 24 pivotably mounted along the inner circumference and 25, expediently along this circumference at least three such abutments in the same arc spacing are arranged.
- the individual pawls 24 and 25 are by springs 26 and 27 charged.
- the pivot axes of these pawls 24 and 25 lie in the cross-sectional planes the shots and their swiveling planes in the longitudinal central axis in one the Longitudinal central axis of the telescopic rod containing longitudinal plane.
- the torque exerted by the springs 26, 27 is against the direction of extension the piston-cylinder unit 13 directed.
- These jacks 24 and 25 can be designed so that they either in their pivoted position abut directly at the respective stage of the piston-cylinder unit 13 or but that their support surfaces are at least immediately adjacent to these steps.
- These pawls 24 and 25 are suitably mounted so that they are in their pivoted position take a locked dead center position so that one on the support surfaces in the radial direction - based on the cross-sectional planes of the telescopic rod - acting force the pawls do not swing out of their Can move position or position. This is done by the detailed representation according to FIG. 4 clear.
- the swivel angle, the position of the stop and the position of the support surface of the pawl with respect to the pivot axis are so aligned with each other that one in the radial direction - based on the cross-sectional planes of the telescopic rod - acting on the support surface of the pawl Force, this cannot pivot, so that if high or eccentric Load on the telescopic rod and the associated low lateral Evasion of the piston-cylinder unit 13 these pawls their support function exercise.
- a separate device is provided for retracting the telescopic rod, which here consists of a steel cable 12 and a winding device 11.
- This steel cable 12 which runs within the wefts, is at the end with the last shot 5 connected.
- the above-mentioned support function is carried out in the base area of shots 2 and 5 fixed abutments 7 and 8, as described above, exercised.
- a stop 17 is provided which is fixed to the inner wall of the shot 5.
- the measure according to the invention it is possible with a multi-part or multi-stage piston-cylinder unit 13 whose outer dimensions as possible to keep small, but at the same time to be able to transmit very high forces, since the kink resistance compared to previously known measures is considerable could be improved.
- the means for lateral support are dimensioned relatively small, but they are sufficient, the kink resistance of the extended and loaded telescopic rod very significantly, as experience has shown low lateral forces are only necessary to achieve this Avoid buckling of a rod-like component.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Actuator (AREA)
- Walking Sticks, Umbrellas, And Fans (AREA)
- Percussion Or Vibration Massage (AREA)
- Joints Allowing Movement (AREA)
- Jib Cranes (AREA)
Description
- 1
- Schuß
- 2
- Schuß
- 3
- Schuß
- 4
- Schuß
- 5
- Schuß
- 6
- Stelle
- 7
- Widerlager
- 8
- Widerlager
- 9
- 10
- Stelle
- 11
- Aufwickeleinrichtung
- 12
- Stahlseil
- 13
- Kolben-Zylindereinheit
- 14
- Führungsschiene
- 15
- Kragen
- 16
- Kopfflansch
- 17
- Anschlag
- 18
- Widerlager
- 19
- Widerlager
- 20
- Ring
- 21
- Stufe
- 22
- Nabe
- 23
- Stufe
- 24
- Klinke
- 25
- Klinke
- 26
- Feder
- 27
- Feder
- 28
- Schwenkachse
- 29
- Schwenkachse
Claims (11)
- Teleskopierstab bestehend aus mehreren, ineinander verschiebbar gelagerten, rohrartigen Schüssen (1, 2, 3, 4, 5) sowie einer innerhalb des Teleskopierstabes angeordneten, mehrstufigen Kolben-Zylindereinheit (13), die einerseits mit dem äußersten Schuß (1) des Teleskopierstabes und andererseits mit dem letzten inneren Schuß (5) desselben verbunden ist, dadurch gekennzeichnet, daß an den jeweils inneren Basisbereichen zumindest einiger Schüsse (3, 4) radial verstellbare, gegen die äußere Mantelfläche der ausgefahrenen Stufen der Kolben-Zylindereinheit (13) gerichtete, evtl. an diese anlegbare Widerlager (18, 19) vorgesehen sind und gegebenenfalls die in der Reihe zweiten (2) und letzten ausfahrbaren Schüsse (5) feststehende, den äußeren Mantelflächen der ihnen bei ausgefahrener Kolben-Zylindereinheit (13) zugeordnet liegenden Stufen benachbart angeordnete Widerlager (7, 15, 22) aufweisen.
- Teleskopierstab nach Anspruch 1, dadurch gekennzeichnet, daß im Basisbereich der Schüsse (3, 4) entlang des inneren Umfanges als Widerlager schwenkbar gelagerte Klinken (24, 25) angeordnet sind.
- Teleskopierstab nach Anspruch 2, dadurch gekennzeichnet, daß entlang des inneren Umfanges mindestens drei schwenkbar gelagerte Klinken (24, 25) in voneinander gleichen Bogenabständen angeordnet sind.
- Teleskopierstab nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß die einzelnen Klinken (24, 25) durch die Kraft einer Feder (26, 27) belastet sind.
- Teleskopierstab nach Anspruch 2, dadurch gekennzeichnet, daß die Schwenkachsen (28, 29) der Klinken (24, 25) in Querschnittsebenen der Schüsse (3, 4) liegen.
- Teleskopierstab nach Anspruch 2, dadurch gekennzeichnet, daß die Schwenkebenen der Klinken (24, 25) in der die Längsmittelachse des Teleskopierstabes beinhalteten Längsebene liegen.
- Teleskopierstab nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß das von der Kraft der Feder (26, 27) auf die Klinke (24, 25) ausgeübte Drehmoment gegen die Ausschieberichtung der Kolben-Zylindereinheit (13) gerichtet ist.
- Teleskopierstab nach Anspruch 1, dadurch gekennzeichnet, daß am freien Ende der in der Reihe vorletzten Stufe der Kolben-Zylindereinheit (13) ein Kragen (15) angeordnet ist, an bzw. in welchem mehrere parallel zur Achse des Teleskopierstabes liegende Führungsschienen (14) verschiebbar gelagert sind, die an ihrem außenseitig liegenden Ende mit einer innerhalb des letzten Schusses verschiebbar gelagerten, vorzugsweise an der Innenwand dieses Schusses anliegenden Nabe (22) verbunden sind, die ihrerseits mittig von der letzten Stufe (23) der Kolben-Zylindereinheit (13) durchsetzt ist.
- Teleskopierstab nach Anspruch 1, dadurch gekennzeichnet, daß im Basisbereich des in der Reihe zweiten Schusses (2) ein feststehendes Widerlager (7) vorgesehen ist, das als von der Kolben-Zylindereinheit (13) mit Spiel durchsetzter Ring (20) ausgebildet ist oder das aus einzelnen, bis zum äußeren Mantel der Kolben-Zylindereinheit reichenden Stegen besteht.
- Teleskopierstab nach Anspruch 2, dadurch gekennzeichnet, daß die Klinken (24, 25) in ihrer Stützstellung an einem Anschlag anliegen, der die Klinken gegenüber einer radial - bezogen auf den Teleskopierstab - auf sie einwirkenden und durch die unter Belastung seitlich ausweichende Kolben-Zylindereinheit (13) verursachten Kraft in einer Totpunktlage hält.
- Teleskopierstab nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß die Kolben-Zylindereinheit (13) einfach wirkend ausgebildet ist und zur Verkürzung des ausgefahrenen Teleskopierstabes ein flexibles Zugglied, beispielsweise eine Kette oder ein Stahlseil vorgesehen ist, das entlang der Schüsse verläuft und das mit dem in der Reihe letzten Schuß verbunden ist und dessen andere Ende aufwickelbar ist und die Aufwickeleinrichtung außerhalb oder innerhalb der Schüsse vorgesehen ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT395/94 | 1994-02-25 | ||
AT0039594A AT403041B (de) | 1994-02-25 | 1994-02-25 | Teleskopierstab |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0669279A1 EP0669279A1 (de) | 1995-08-30 |
EP0669279B1 true EP0669279B1 (de) | 1999-04-07 |
Family
ID=3489468
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95101719A Expired - Lifetime EP0669279B1 (de) | 1994-02-25 | 1995-02-09 | Teleskopierstab |
Country Status (5)
Country | Link |
---|---|
US (1) | US5632395A (de) |
EP (1) | EP0669279B1 (de) |
JP (1) | JPH0834595A (de) |
AT (2) | AT403041B (de) |
DE (1) | DE59505547D1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1827518B (zh) * | 2005-03-01 | 2010-11-03 | 格罗夫美国有限责任公司 | 伸缩式起重臂的适应性滑动轴承部分、滑动轴承以及滑动轴承组件 |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6225123B1 (en) * | 1997-04-30 | 2001-05-01 | Becton Dickinson And Company | Additive preparation and method of use thereof |
DE102005009348B4 (de) * | 2005-03-01 | 2013-05-29 | Manitowoc Crane Group France Sas | Anpassungsfähiges Gleitlager für Teleskopkranausleger |
US7849641B2 (en) * | 2007-07-12 | 2010-12-14 | Thor Global Enterprises Ltd. | Undercarriage for a telescopic frame |
US20110126700A1 (en) * | 2007-07-12 | 2011-06-02 | Johannsen Thorkil J | Undercarriage for a telescopic frame |
AT12942U1 (de) * | 2011-11-08 | 2013-02-15 | Palfinger Ag | Kran, insbesondere ladekran für ein fahrzeug |
FR3022794B1 (fr) * | 2014-06-27 | 2016-07-29 | Decathlon Sa | Structure de jeu comprenant une base disposee en appui sur le sol |
US10533585B2 (en) | 2015-11-16 | 2020-01-14 | Saab Ab | Telescopic device and method for operating a telescopic device |
US9539948B1 (en) | 2016-03-22 | 2017-01-10 | Jac Products, Inc. | Telescoping step assist system and method |
WO2018035197A1 (en) | 2016-08-17 | 2018-02-22 | D & M Designs Llc | Collapsible telescoping pole |
US10723272B2 (en) | 2017-12-04 | 2020-07-28 | Jac Products, Inc. | Step rail system for vehicle |
CN110054032A (zh) * | 2019-05-20 | 2019-07-26 | 倪军 | 一种新型的电动伸缩杆 |
CN111517236B (zh) * | 2020-04-30 | 2022-06-28 | 湖南双达机电有限责任公司 | 伸缩机构、臂架及高空作业设备 |
CN112963176A (zh) * | 2021-04-09 | 2021-06-15 | 湖南五新隧道智能装备股份有限公司 | 一种伸缩式布料机 |
CN113526377A (zh) * | 2021-07-12 | 2021-10-22 | 中国船舶重工集团公司第七一三研究所 | 一种新型重载可伸缩吊臂 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE214833C (de) * | ||||
US3616728A (en) * | 1969-12-05 | 1971-11-02 | Tel E Lect | Actuator mounting assembly for telescopic parts |
DE2018926C2 (de) * | 1970-01-31 | 1982-07-08 | Tadano Ironworks Co.Ltd., Takamatsu | Teleskopausleger für einen Kran |
US3792555A (en) * | 1971-04-08 | 1974-02-19 | Kidde & Co Walter | Five section full powered telescopic crane boom |
US4132040A (en) * | 1977-05-12 | 1979-01-02 | Jlg Industries, Inc. | Multi-section lifting boom |
DE2926292A1 (de) * | 1979-06-29 | 1981-01-08 | Harnischfeger Gmbh | Insbesondere mobiler teleskopauslegerkran |
US4408424A (en) * | 1981-03-20 | 1983-10-11 | Richard K. Teichgraeber | Telescoping cylinder stabilizer |
SU1065330A1 (ru) * | 1982-05-05 | 1984-01-07 | Ленинградский Филиал Всесоюзного Института По Проектированию Организации Энергетического Строительства "Оргэнергострой" | Устройство дл фиксации секций телескопической крановой стрелы |
DD214833A1 (de) * | 1983-05-02 | 1984-10-24 | Babelsberg Masch Veb | Vorrichtung zur erhoehung der leistungsfaehigkeit von mobilkranen |
SU1221197A1 (ru) * | 1984-06-19 | 1986-03-30 | Одесское производственное объединение тяжелого краностроения им.Январского восстания | Телескопическа стрела грузоподъемного устройства |
US4946051A (en) * | 1989-04-05 | 1990-08-07 | Cliff John O | Two-boom crawler crane |
DE9013210U1 (de) * | 1990-09-18 | 1991-01-03 | Liebherr-Werk Ehingen Gmbh, 7930 Ehingen | Teleskopiersystem mit verringerter Knicklänge des Teleskopierzylinders |
DE9318847U1 (de) * | 1993-12-08 | 1994-02-03 | Ec Engineering + Consulting Spezialmaschinen Gmbh, 89079 Ulm | Teleskopierbarer Ausleger mit mehrstufigem Hydraulikzylinder |
-
1994
- 1994-02-25 AT AT0039594A patent/AT403041B/de not_active IP Right Cessation
-
1995
- 1995-02-09 DE DE59505547T patent/DE59505547D1/de not_active Expired - Fee Related
- 1995-02-09 AT AT95101719T patent/ATE178567T1/de not_active IP Right Cessation
- 1995-02-09 EP EP95101719A patent/EP0669279B1/de not_active Expired - Lifetime
- 1995-02-15 US US08/388,807 patent/US5632395A/en not_active Expired - Fee Related
- 1995-02-22 JP JP7034013A patent/JPH0834595A/ja not_active Withdrawn
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1827518B (zh) * | 2005-03-01 | 2010-11-03 | 格罗夫美国有限责任公司 | 伸缩式起重臂的适应性滑动轴承部分、滑动轴承以及滑动轴承组件 |
Also Published As
Publication number | Publication date |
---|---|
DE59505547D1 (de) | 1999-05-12 |
EP0669279A1 (de) | 1995-08-30 |
AT403041B (de) | 1997-10-27 |
JPH0834595A (ja) | 1996-02-06 |
US5632395A (en) | 1997-05-27 |
ATA39594A (de) | 1997-03-15 |
ATE178567T1 (de) | 1999-04-15 |
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