EP0673876B1 - Teleskopierstab - Google Patents
Teleskopierstab Download PDFInfo
- Publication number
- EP0673876B1 EP0673876B1 EP95101743A EP95101743A EP0673876B1 EP 0673876 B1 EP0673876 B1 EP 0673876B1 EP 95101743 A EP95101743 A EP 95101743A EP 95101743 A EP95101743 A EP 95101743A EP 0673876 B1 EP0673876 B1 EP 0673876B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- telescopic rod
- tube portions
- shot
- clamps
- bolts
- 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
- B66C23/708—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic locking devices for telescopic jibs
Definitions
- the invention relates to a telescopic rod consisting of several, one inside the other slidably mounted, tubular shots, as well as one within the Telescopic rod arranged, possibly multi-stage piston-cylinder unit, on the one hand with the outermost shot of the telescopic wand and on the other hand connected to the last inner shot of the same, being in the area the inner end faces of individual shots can be moved transversely to their longitudinal direction, in operative connection with the respectively adjacent outer shot bringable latches are provided and when in the extended end position Firing the bolt of the inner shot into an opening of the outer one adjacent shot engages positively.
- Such telescopic rods are used, for example, as cantilevers in vehicles or Rail cranes are used as the cantilever arm of a truck loading crane or as a telescopic arm for a work platform and the like
- the telescopic rod consists of an outer one Shot and several telescopic inner shots.
- the outside shot and the inner wefts have a box-shaped cross section with belts and Ridges or are optionally created from a pipe cross-section.
- the push-out arrangement usually it is a multi-stage piston-cylinder unit, is connected to the outermost and the innermost shot.
- Known Versions on telescopic booms have the attachment points of the Push-out device on the individual sections of the parts to be telescoped attached.
- the invention has for its object a telescopic rod of the beginning mentioned type so constructively that when using a simple Push-out arrangement that only attacks the outermost and innermost shot, a clear driving sequence of the individual shots is generated, namely in the way that the individual shots successively extended or retracted can be, and this with little, simple design effort.
- a telescopic rod is made up of several slidably mounted one inside the other Shots known (GB-PS 1569 315), in which the individual shots both Lockable against each other when extended as well as when retracted are.
- the locking bolts provided here are via piston-cylinder units actuated, which in turn are externally controlled. The intended constructive Effort is considerable.
- the invention provides that the latch on the inner faces of those lying between the outermost and the innermost shot Shots are provided and also on the inner faces of those Shots that follow the shots with the bolts inwards, the bolts
- the locks hold in the unlocking position are arranged and outside on the end faces of between the outermost and innermost shot lying shots spring-loaded brackets are provided which when the telescopic rod is retracted on the outer end faces of the inside the following shots arranged bolts form fit, the individual Brackets held by a spring-loaded locking pin in the closed position are adjacent to the front of the shot carrying the clips lying outer shot is arranged.
- Expedient embodiments of the invention are set out in the subclaims. Thanks to the invention it is ensured that when extending the telescopic rod first the shots with gradually decreasing diameter of the Are extended one after the other, while the shots gradually with the retract increasing diameter successively.
- the telescopic rod seen in FIGS. 1 to 4 from the side and in part is shown cut, has several successive tubular Shots 1, 2, 3, 4, 5, 6, with the tubular shot 1 with the largest Diameter forms the outermost shot, with one not shown here Extension arrangement such as a multi-stage piston-cylinder unit connected is.
- the one also connected to this push-out device Shot 6 forms the innermost shot.
- the push-out device, not shown is arranged inside the telescopic rod.
- the innermost shot 6 carries one Head 7, on which a tool or the like. can be arranged.
- On the inside End faces 23 of the shots 2, 3, 4 and 5 are here in pairs and in diametrical Arrangement bolt 8 is provided, which can be moved transversely to the axial direction of the shots stored and carried by a spring 9.
- FIGS. 1 to 4 are expediently in the neutral zone of the Telescopic rod, so - based on FIGS. 1 to 4 - in a plane that is rectangular to the drawing level.
- the bolt-like bolts 8 protrude through the Wall of the shot on which they are stored and they have a back Ramp surface 11, which cooperates with a lock 12 on the inner Front 13 of the subsequent shot is arranged (Fig. 5).
- This Lock 12 here consists of a parallel to the axis of the shot Dome with a wedge bevel 14 on the front. Is the telescopic rod moved together? (Fig. 1 and Fig. 5), the locks 12 engage in the latch 8 and hold this in its unlocked position, which is illustrated in Fig.
- the bars 8 are now dimensioned so long and their axial displacement is so large that they - released by the lock 12 - on the inner wall of the adjacent outer Shot under the action of the force of the biased spring 8. are two adjacent shots (Fig. 6) in their extended end position, see above the bolt 8 of the respective inner shot is congruent with a recess 15 in the wall of the adjacent outer shot (Fig. 6), in which he is pressed in by the force of the prestressed spring 9.
- brackets 16 are arranged, each from two-armed pairs provided symmetrically to each other Jaws 17 are each formed with a pivot axis 24.
- the two against the Limit projecting portions of these jaws 17 from the end face of the respective shot an elongated hole recess 18 which extends in the axial direction of the shots.
- a compression spring 19 Between the section facing the adjacent outer shot this jaw 17 is a compression spring 19, the jaws 17 and the bracket 16 holds in the closed position.
- Limit the latter sections of the jaws 17 also a recess 20 that is open against the adjacent outer shot is.
- a locking pin 21 which is parallel to the axial direction the shots extend and the spring is loaded.
- locking bolts 21 are provided on the shots 2, 3 and 4.
- 4, 5 and 6 bolts 22 are located on the outer end faces of the shots fixed, the arrangement of these bolts 22 is made such that when moved together Shots (Fig. 1) these bolts 22 each from the slot 18th a bracket 16 are included.
- the compression spring 19 of the bracket 16 of the one following the outermost shot second shot 2 is dimensioned so that it generates a force that the due to the frictional resistance maximum force including a safety margin corresponds.
- the other brackets 16 are for the time being by the ones which engage in them Locking pin 21 blocked.
- the shot 2 now moves opposite the shot 1 over its entire length until the bolt 8 on the inner end face 23 of the shot 2 is congruent with the recess 15 in the wall of the Shot 1 lies, whereupon this bolt 8 of the shot 2 in this recess 15 by the force of the prestressed spring 9 acting on it and thus these two shots 1 and 2 are locked against each other in the axial direction (Fig. 3).
- the bolt Due to the further effective force of the push-out device, the bolt is now 22 on the front side of the subsequent shot 3 from the bracket 16 of the Shot 2 pressed so that in the sequence of the shot 3 relative to the shot 2 Can be fully extended, while at the same time on the front of the Shot 2 provided locking bolt 21 releases the bracket 16 of the shot 3 (Fig.
- the one from the push-out device moves for the time being worn innermost shot 6 against the axial displacement secured shot 5, the bolt 22 on the end face of the innermost Shot 6 gets into the bracket 16 on the front side of the shot 5 and then the lock arranged on the inner end face 23 of the innermost shot 6 12 the bolt 8 of the shot 5 in its release position from the recess 15 retracts in the wall of the shot 4.
- the shot 5 is by means of it Clip 16 on the pin 22 of the innermost carried by the extractor Shot 6 hung up so to speak and now these two move together again shots 6 and 5 connected by the clamp 16 further to the right, the movement described above now between shot 5 and shot 4 is repeated, in an analogous manner, until all the shots for Are moved together completely, so again the position shown in FIG. 1 to each other achieved.
- the brackets 16 successively To block.
- the telescopic rod according to the invention which, as mentioned at the beginning, serves as an extension arm a crane or the like is usually lifted around a horizontal axis can be lowered and rotated and swiveled around a vertical axis.
- the individual tubular ones Shots 1 to 6 usually have a box cross-section.
- the bolts 8 are mechanically actuated by the spike-like Lock 12. It is within the scope of the invention, here electrical, hydraulic or to provide pneumatic actuators.
- the invention It is possible to measure the telescopic rod in terms of its performance limits full use, because those shots are always fired in chronological order that have the largest cross-section or when entering with the shot with the smallest cross-section is started and then always only the shot with the next larger cross section can be obtained.
- the bolts 8 and interlocking with them 12 arranged in pairs in the neutral zone of the telescopic rod.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
- Joints Allowing Movement (AREA)
- Walking Sticks, Umbrellas, And Fans (AREA)
- Percussion Or Vibration Massage (AREA)
- Supports For Pipes And Cables (AREA)
- Clamps And Clips (AREA)
- Jib Cranes (AREA)
- Forklifts And Lifting Vehicles (AREA)
Description
- 1
- rohrartiger Schuß
- 2
- rohrartiger Schuß
- 3
- rohrartiger Schuß
- 4
- rohrartiger Schuß
- 5
- rohrartiger Schuß
- 6
- rohrartiger Schuß
- 7
- Kopf
- 8
- Riegel
- 9
- Feder
- 10
- Wand
- 11
- Auflauffläche
- 12
- Sperre
- 13
- Stirnseite
- 14
- Keilschräge
- 15
- Ausnehmung
- 16
- Klammer
- 17
- Backen
- 18
- Langlochausnehmung
- 19
- Druckfeder
- 20
- Aussparung
- 21
- Sperrbolzen
- 22
- Bolzen
- 23
- Stirnseite
- 24
- Schwenkachse
Claims (10)
- Teleskopierstab bestehend aus mehreren, ineinander verschiebbar gelagerten, rohrartigen Schüssen (1 - 6), sowie einer innerhalb des Teleskopierstabes angeordneten, gegebenenfalls mehrstufigen Kolben-Zylinder-Einheit, die einerseits mit dem äußersten Schuß (1) des Teleskopierstabes und andererseits mit dem letzten inneren Schuß (6) desselben verbunden ist, wobei im Bereich der inneren Stirnseiten (23) einzelner Schüsse quer zu deren Längsrichtung verschiebbare, mit dem jeweils benachbart liegenden äußeren Schuß in Wirkverbindung bringbare Riegel (8) vorgesehen sind und bei in ausgefahrener Endlage befindlichen Schüssen der Riegel (8) des jeweils inneren Schusses in eine Öffnung (15) des jeweils äußeren benachbarten Schusses formschlüssig eingreift, wobei die Riegel (8) an den inneren Stirnseiten (23) der zwischen dem äußersten und dem innersten Schuß (1, 6) liegenden Schüssen (2, 3, 4, 5) vorgesehen sind und ferner an den inneren Stirnseiten (23) derjenigen Schüsse (2, 3, 4, 5, 6), die den die Riegel (8) aufweisenden Schüssen (2, 3, 4, 5) nach innen folgen, die Riegel (8) bei zusammengefahrenem Teleskopierstab in Entriegelungsstellung haltende Sperren (12) angeordnet sind dadurch gekennzeichnet, daß außen an den Stirnseiten der zwischen dem äußersten und innersten Schuß (1, 6) liegenden Schüsse (2, 3, 4, 5) federbelastete Klammern (16) vorgesehen sind, die bei zusammengefahrenem Teleskopierstab an den äußeren Stirnseiten der jeweils nach innen folgenden Schüsse angeordnete Bolzen (22) formschlüssig fassen, wobei die einzelnen Klammern (16) von je einem federbelasteten Sperrbolzen (21) in Schließstellung gehalten sind, der an der äußeren Stirnseite des die Klammern (16) tragenden Schusses benachbart liegenden äußeren Schusses angeordnete ist.
- Teleskopierstab nach Anspruch 1, dadurch gekennzeichnet, daß die Sperren (12) stirnseitig eine Keilschräge (14) aufweisen und federbelastete Riegel (8) eine Auflauffläche (11) für die Sperren (12) besitzen, an welcher die Sperre (12) bei in Entriegelungsstellung befindlichem Riegel (8) anliegt, wenn der Teleskopierstab zusammengefahren ist.
- Teleskopierstab nach Anspruch 2, dadurch gekennzeichnet, daß die Sperren (12) durch dornartige, parallel zu den Längsachsen der Schüsse (1, 2, 3, 4, 5, 6) liegende Stifte gebildet sind.
- Teleskopierstab nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Riegel (8) und die mit ihnen zusammenwirkenden Sperren (12) in der biegeneutralen Zone des Teleskopierstabes liegen.
- Teleskopierstab nach Anspruch 1, dadurch gekennzeichnet, daß die Klammern (16) aus paarweise angeordneten, zweiarmigen Backen (17) gebildet sind, wobei die Backen der geschlossenen Klammern (16) zur Aufnahme der Bolzen (22) eine sich in Verschieberichtung der Schüsse (1, 2, 3, 4, 5, 6) erstreckende Langlochausnehmung (18) aufweisen.
- Teleskopierstab nach einem der Ansprüche 1 oder 5, dadurch gekennzeichnet, daß zwischen den zweiarmigen Backen (17) der Klammern (16) eine diese in Schließstellung haltende Druckfeder (19) angeordnet ist und diese Druckfeder (19) bezogen auf die Schwenkachse (24) der Backen (17) der Langlochausnehmung (18) gegenüberliegt.
- Teleskopierstab nach Anspruch 5, dadurch gekennzeichnet, daß der die Langlochausnehmung (18) aufweisende Abschnitt der Klammern (16) die Stirnseite des ihn tragenden Schusses überragt.
- Teleskopierstab nach Anspruch 1 oder 6, dadurch gekennzeichnet, daß der dem benachbarten, äußeren Schuß zugewandte Abschnitt der Klammer, der die die Klammer in Schließstellung haltende Druckfeder (19) aufweist, eine gegen diesen Schuß hin offene Aussparung (20) besitzt, in welche bei zusammengefahrenem Teleskopierstab der Sperrbolzen (21) ragt.
- Teleskopierstab nach Anspruch 1, dadurch gekennzeichnet, daß die an der äußeren Stirnseite der Schüsse angeordneten zweiarmigen Klammern (16) und die federbelasteten Sperrbolzen (21) in Umfangsrichtung des Teleskopierstabes aufeinanderfolgend angeordnet sind.
- Teleskopierstab nach Anspruch 1, dadurch gekennzeichnet daß die Sperrbolzen (21) achsparallel zu den Achsen der Schüsse angeordnet und gegen die Kraft einer Feder längsverschiebbar sind.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT576/94 | 1994-03-18 | ||
AT0057694A AT403040B (de) | 1994-03-18 | 1994-03-18 | Teleskopierstab |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0673876A1 EP0673876A1 (de) | 1995-09-27 |
EP0673876B1 true EP0673876B1 (de) | 1999-04-21 |
Family
ID=3494240
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95101743A Expired - Lifetime EP0673876B1 (de) | 1994-03-18 | 1995-02-09 | Teleskopierstab |
Country Status (5)
Country | Link |
---|---|
US (1) | US5624046A (de) |
EP (1) | EP0673876B1 (de) |
JP (1) | JPH0834596A (de) |
AT (2) | AT403040B (de) |
DE (1) | DE59505680D1 (de) |
Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7465108B2 (en) * | 2000-02-10 | 2008-12-16 | Cam Guard Systems, Inc. | Temporary surveillance system |
US6375370B1 (en) * | 2000-02-10 | 2002-04-23 | Cam Guard Systems, Inc. | Temporary surveillance system |
US20080100707A1 (en) * | 2000-02-10 | 2008-05-01 | Cam Guard Systems, Inc. | Temporary surveillance system |
US6619570B1 (en) | 2000-06-14 | 2003-09-16 | Orbit Irrigation Products, Inc. | Telescoping watering wand |
US6692142B1 (en) | 2000-08-04 | 2004-02-17 | Musco Corporation | Apparatus, method, and system of a moveable lighting |
US6446408B1 (en) * | 2000-08-04 | 2002-09-10 | Musco Corporation | Collapsible pole |
JP4901010B2 (ja) * | 2001-03-05 | 2012-03-21 | 株式会社タダノ | ブーム伸縮機構の制御装置 |
US6601719B2 (en) | 2001-09-21 | 2003-08-05 | Link-Belt Construction Equipment Co., L.P., Lllp | Locking and latching system for a telescoping boom |
US20040123328A1 (en) * | 2002-12-20 | 2004-06-24 | Ecamsecure, Inc. | Mobile surveillance vehicle |
DE102005007522A1 (de) * | 2005-02-17 | 2006-08-31 | Putzmeister Ag | Stützausleger für fahrbare Arbeitsmaschinen |
SI2147174T1 (sl) * | 2007-04-16 | 2017-11-30 | Falck Schmidt Defence System A/S | Teleskopski drog |
WO2009058241A2 (en) * | 2007-10-29 | 2009-05-07 | Us Tower Corporation | Polygon mast |
CN101214913B (zh) * | 2008-01-21 | 2010-06-02 | 长沙中联重工科技发展股份有限公司 | 一种起重机用连杆式互锁机构 |
DE202008016604U1 (de) * | 2008-12-15 | 2009-03-19 | Terex Demag Gmbh | Teleskopausleger |
US8789654B2 (en) | 2010-08-17 | 2014-07-29 | Jlg Industries, Inc. | Mast lift with screw drive and gas strut |
US9505596B2 (en) | 2010-08-17 | 2016-11-29 | Jlg Industries, Inc. | Mast lift with screw drive and gas strut |
CN103648961B (zh) * | 2010-08-17 | 2016-01-13 | Jlg工业公司 | 使用多级桅杆模块的桅杆升降装置 |
US8922451B2 (en) * | 2011-01-25 | 2014-12-30 | The Will-Burt Company | Lockdown mechanism for an electric drive screw telescoping mast system |
CN102491198B (zh) * | 2011-11-29 | 2014-09-10 | 三一汽车起重机械有限公司 | 单缸插销油缸及具有该油缸的伸缩臂装置、起重机 |
CN103307069A (zh) * | 2012-03-13 | 2013-09-18 | 鸿富锦精密工业(深圳)有限公司 | 多节可伸缩装置 |
JP6294716B2 (ja) * | 2014-03-18 | 2018-03-14 | 日本車輌製造株式会社 | 掘削機械 |
US9371663B2 (en) | 2014-05-07 | 2016-06-21 | Us Tower Corporation | Internally keyed extruded mast system |
DE202014004976U1 (de) * | 2014-06-16 | 2014-08-07 | Liebherr-Werk Ehingen Gmbh | Teleskopausleger und Kran |
GB2582249B (en) * | 2019-01-25 | 2023-07-05 | South Midlands Communications Ltd | Telescopic mast |
CN113023634B (zh) * | 2021-04-07 | 2024-04-19 | 唐山市时迁科技有限公司 | 一种稳固的矿山机械作业平台 |
CN114436168B (zh) * | 2021-12-27 | 2022-08-05 | 浙江尤恩叉车股份有限公司 | 一种电动叉车 |
CN116253258B (zh) * | 2023-05-12 | 2023-10-03 | 四川川运重工机械有限公司 | 随车起重机吊臂结构以及随车起重机 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2819803A (en) * | 1954-10-12 | 1958-01-14 | Leo B Obenchain | Boom for cranes |
US3398645A (en) * | 1966-11-30 | 1968-08-27 | Nat Crane Corp | Multiple extension apparatus |
US3398492A (en) * | 1966-12-21 | 1968-08-27 | Nat Crane Corp | Extendable boom |
US3842985A (en) * | 1972-12-15 | 1974-10-22 | Harnischfeger Corp | Means for extending and retracting crane boom section |
US4036372A (en) * | 1975-12-15 | 1977-07-19 | Clark Equipment Company | Extension and retraction means for the telescopic boom assembly of a crane |
US4492311A (en) * | 1981-08-17 | 1985-01-08 | Fmc Corporation | Coupling and latching mechanism for extensible boom |
US4664272A (en) * | 1981-11-05 | 1987-05-12 | Kidde, Inc. | Telescoping crane boom with locking and indicator means |
SU1255555A1 (ru) * | 1985-01-28 | 1986-09-07 | Одесское производственное объединение тяжелого краностроения им.Январского восстания | Телескопическа стрела грузоподъемного устройства |
-
1994
- 1994-03-18 AT AT0057694A patent/AT403040B/de not_active IP Right Cessation
-
1995
- 1995-02-09 EP EP95101743A patent/EP0673876B1/de not_active Expired - Lifetime
- 1995-02-09 AT AT95101743T patent/ATE179149T1/de not_active IP Right Cessation
- 1995-02-09 DE DE59505680T patent/DE59505680D1/de not_active Expired - Fee Related
- 1995-02-15 US US08/388,808 patent/US5624046A/en not_active Expired - Fee Related
- 1995-03-14 JP JP7054717A patent/JPH0834596A/ja not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
ATE179149T1 (de) | 1999-05-15 |
ATA57694A (de) | 1997-03-15 |
DE59505680D1 (de) | 1999-05-27 |
US5624046A (en) | 1997-04-29 |
EP0673876A1 (de) | 1995-09-27 |
AT403040B (de) | 1997-10-27 |
JPH0834596A (ja) | 1996-02-06 |
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