DE4427750A1 - Load and choker hook for automatic rope-operated cranes with entry bow - Google Patents

Load and choker hook for automatic rope-operated cranes with entry bow

Info

Publication number
DE4427750A1
DE4427750A1 DE19944427750 DE4427750A DE4427750A1 DE 4427750 A1 DE4427750 A1 DE 4427750A1 DE 19944427750 DE19944427750 DE 19944427750 DE 4427750 A DE4427750 A DE 4427750A DE 4427750 A1 DE4427750 A1 DE 4427750A1
Authority
DE
Germany
Prior art keywords
hook
load
rope
entry
recess
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.)
Withdrawn
Application number
DE19944427750
Other languages
German (de)
Inventor
Jakob Mairhofer
Franz Hochleitner
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of DE4427750A1 publication Critical patent/DE4427750A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00Other constructional features or details
    • B66C13/04Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
    • B66C13/06Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for minimising or preventing longitudinal or transverse swinging of loads
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B61RAILWAYS
    • B61BRAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
    • B61B7/00Rope railway systems with suspended flexible tracks
    • B61B7/06Rope railway systems with suspended flexible tracks with self-propelled vehicles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C21/00Cable cranes, i.e. comprising hoisting devices running on aerial cable-ways

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Jib Cranes (AREA)

Abstract

The invention relates to a special embodiment of a load and choker hook (4) for automatic rope-operated cranes (1) as well as its associated entry bow (8). Known automatic rope-operated cranes have a load pendulum which mechanically locks the load hook and thus frictionally largely prevents turning of the hook and thus of the traction and lifting rope (3). More recent automatic rope-operated cranes, often radio-controlled, no longer require a load pendulum, although it is considered to be a disadvantage that the load or choke hook (4) can turn during travel and thus overloads the traction or lifting rope (3), which can lead to rope breakage. The invention avoids this disadvantage by designing the top part (4) of the hook in the shape of a truncated pyramid which is cut by two parallel surfaces (8) and is rotated in a positively actuated manner when moving into the entry bow in such a way that it can pass the recess (6) of the entry bow (5) only with the narrow side (8) and thus prevents further turning. In order to guarantee this function at all operationally induced inclinations of the carrying rope (2), the entry bow (5) is curved in its longitudinal profile in such a way that there is a uniform distance (A) between the entry bow (5) and the point of inflection (B) at the deflection pulley (9), as shown in Fig. 5. <IMAGE>

Description

Die Erfindung betrifft eine besondere Ausformung eines Last- und Chokerhakens (4) für Seilkran-Automaten (1) gemäß dem Oberbegriff des Anspruches 1 sowie eine besondere Ausführung des dazugehörigen Einfahrtsbügels (5) gemäß Oberbegriff des Anspruches 2.The invention relates to a special design of a load and choker hook ( 4 ) for cable crane machines ( 1 ) according to the preamble of claim 1 and a special embodiment of the associated entry bracket ( 5 ) according to the preamble of claim 2.

Bekannte Ausführungen von Lasthaken für Seilkran-Automaten weisen in der Regel an deren oberen Ende, an dem das Zug- bzw. Hubseil aus dem Haken austritt, ein kreisförmiges Element zur erleichterten Einfahrt und anschließender Verriegelung in einem Lastpendel auf. Da diese Verriegelung zumeist eine kraftschlüssige Sperre gegen weiteres Verdrehen bewirkt, sind in der Regel keine weiteren konstruktiven Maßnahmen gegen Verdrehung nötig.Known designs of load hooks for cable crane machines show in the As a rule, at the upper end at which the pulling or lifting rope exits the hook, a circular element to facilitate entry and subsequent Locking in a load pendulum. Since this locking is mostly a Non-positive lock against further twisting are usually no further constructive measures against twisting necessary.

Neuere Ausführungen von Seilkran-Automaten, oft durch Funkfernsteuerung gesteuert, benötigen zum Teil kein Lastpendel mit dessen Verriegelungsmechanismus mehr. Dies ergibt aber den nachteiligen Umstand, daß ein nicht gegen Verdrehung gesicherter Last- oder Chokerhaken sich während der Fahrt drehen kann und damit das Zug- oder Hubseil auf dem kurzen Seilstück zwischen der Umlenkrolle und dem Haken auf- oder eindreht. Dies führt zu einer Überbelastung des Seiles, die bis zum Seilbruch führen kann.Newer versions of cable crane machines, often controlled by radio remote control, some do not need a load pendulum with its locking mechanism more. However, this results in the disadvantageous fact that a not against Locked load or choker hooks turn while driving can and thus the pull or hoist rope on the short piece of rope between the Deflection roller and the hook on or screwed. This leads to an overload of the rope, which can lead to the rope breaking.

Um dieser wesentlich erhöhten Unfallgefahr gegenzuwirken, ist die erfindungswesentliche Ausformung des Last- und Chokerhakens (4) dergestalt, daß der Haken (4) beim Einziehen in den Einfahrtsbügel (5) bzw. in dessen Ausnehmung (6) zwangsläufig so gedreht wird, daß er nur mit der Schmalseite (8) die Ausnehmung (6) passieren kann und somit nach dem Einziehen lagefixiert ist. Jeder weitere Drehung des Hakens (4) ist damit verhindert, wie in Fig. 2 dargestellt.To counteract this substantially increased risk of accidents, essential to the invention shaping of the load and Chokerhakens (4) is such that the hook (4) is forcibly rotated so being pulled into the entrance bracket (5) and in its recess (6) so that it only with the narrow side ( 8 ) can pass through the recess ( 6 ) and is thus fixed in position after being drawn in. Any further rotation of the hook ( 4 ) is prevented, as shown in Fig. 2.

Dies wird dadurch erreicht, daß der obere Teil des Hakens (4) wie in Fig. 1 dargestellt, ausgehend von einem annähernd quadratischen Querschnitt (7), dessen eine Diagonale die beiden Schmalseitenebenen rechtwinklig kreuzt, sich zu einem Pyramidenstumpf erweitert, der durch zwei parallele Flächen (8) im Abstand des Hakens (4) beschnitten ist. Zwecks leichtem Einfahren und Eindrehen sind die Kanten an den Längsseiten geringfügig abgefast und alle übrigen Kanten (10) gleichmäßig verlaufend abgerundet.This is achieved in that the upper part of the hook ( 4 ) as shown in Fig. 1, starting from an approximately square cross-section ( 7 ), one diagonal of which intersects the two narrow side planes at right angles, widens to form a truncated pyramid which is paralleled by two Surfaces ( 8 ) at a distance from the hook ( 4 ) is trimmed. For easy insertion and screwing in, the edges on the long sides are slightly chamfered and all other edges ( 10 ) are rounded evenly.

Die Sicherheit gegen Verdrehen des Hakens (4) ist nur in eingefahrenem Zustand gegeben. Damit dies auch bei den im Betrieb auftretenden unterschiedlichen Tragseilneigungen, wie in Fig. 3 und Fig. 4 dargestellt, gewährleistet ist, ist der Einfahrtsbügel (5) in seinem Längsverlauf gekrümmt und die Länge der Ausnehmung (6) dergestalt, daß eine Verschiebung des in der Ausnehmung (6) lagefixierten und geführten Hakenoberteils (4) ermöglicht ist. Dies wird dadurch erreicht, daß, wie in Figur dargestellt, die Krümmungslinie des Einfahrtsbügels (5) in gleichmäßigen Abstand (A) vom Knickpunkt (B) der Umlenkrolle (9) verläuft. The safety against turning the hook ( 4 ) is only given when retracted. Is therefore this also shown in occur in operation different supporting cable inclinations, as in Fig. 3 and Fig. 4, ensures the entrance bracket (5) is curved along its length and the length of the recess (6) such that a shift of the in the recess ( 6 ) positionally fixed and guided hook upper part ( 4 ) is made possible. This is achieved in that, as shown in the figure, the line of curvature of the entry bracket ( 5 ) runs at a uniform distance (A) from the break point (B) of the deflection roller ( 9 ).

BezugszeichenlisteReference list

 (1) Seilkran-Automat
 (2) Tragseil
 (3) Zug- oder Hubseil
 (4) Last- und Chokerhaken
 (5) Einfahrtsbügel
 (6) Ausnehmung im Einfahrtsbügel
 (7) Querschnitt am oberen Hakenende
 (8) Querschnitt am unteren Ende des Hakenoberteils
 (9) Umlenkrolle für Zug- oder Hubseil
(10) gerundete Kanten des Hakenoberteils
(11) Zugseil-Klemmapparat
( 1 ) Rope crane automat
( 2 ) suspension cable
( 3 ) traction or hoist rope
( 4 ) Load and choker hook
( 5 ) Entry bracket
( 6 ) Recess in the entrance bracket
( 7 ) Cross section at the top end of the hook
( 8 ) Cross section at the lower end of the upper hook part
( 9 ) Pulley for traction or hoisting rope
( 10 ) rounded edges of the hook top
( 11 ) Traction rope clamp

Claims (2)

1. Last- und Chokerhaken für Seilkran-Automaten mit zwangsläufiger Drehung und lagefixierter Führung des Hakens in eine Ausnehmung eines Einfahrtsbügels eines Seilkranwagens, dadurch gekennzeichnet, daß der obere Teil des Hakens (4) ausgehend von einem annähernd quadratischen Querschnitt (7), dessen eine Diagonale die beiden Schmalseitenebenen rechtwinklig kreuzt, einen Pyramidenstumpf darstellt, der durch zwei parallele Flächen (8) im Abstand der Diagonale des Ausgangsquerschnittes in den Ebenen der Schmalseiten des Hakens (4) beschnitten ist, wobei die Kanten an den Längsseiten des Hakens (4) geringfügig abgefast und alle übrigen Kanten (10) gleichmäßig verlaufend abgerundet sind.1. load and choker hook for cable crane machines with inevitable rotation and positionally fixed guidance of the hook in a recess of an entry bracket of a cable crane car, characterized in that the upper part of the hook ( 4 ) starting from an approximately square cross-section ( 7 ), one of which Diagonal crosses the two narrow side planes at right angles, represents a truncated pyramid which is trimmed by two parallel surfaces ( 8 ) at a distance from the diagonal of the initial cross section in the planes of the narrow sides of the hook ( 4 ), the edges on the long sides of the hook ( 4 ) being slight bevelled and all other edges ( 10 ) are rounded evenly. 2. Einfahrtsbügel für den Last- und Chokerhaken eines Seilkran-Automaten nach Anspruch 1, dadurch gekennzeichnet, daß die Breite der Ausnehmung (6) des in seinem Längsverlauf gekrümmten Einfahrtsbügels (5) den Schmalseiten des oberen Teiles des Hakens (4) entspricht und daß die Länge der Ausnehmung (6) des Einfahrtsbügels (5) sowie eine besondere Krümmung eine Verschiebung des in der Ausnehmung (6) lagefixierten und geführten Hakenoberteiles für jede im Betrieb vorkommende Neigung des Tragseiles (2) zuläßt, ohne daß das Seil hierdurch in seiner Spannung beeinflußt wird.2. Entry bracket for the load and choker hook of a cable crane machine according to claim 1, characterized in that the width of the recess ( 6 ) of the longitudinally curved entry bracket ( 5 ) corresponds to the narrow sides of the upper part of the hook ( 4 ) and that the length of the recess ( 6 ) of the entrance bracket ( 5 ) and a special curvature allows the upper part of the hook fixed and guided in the recess ( 6 ) to be displaced for every inclination of the supporting cable ( 2 ) occurring in operation, without the cable thereby becoming tensioned being affected.
DE19944427750 1993-08-27 1994-08-05 Load and choker hook for automatic rope-operated cranes with entry bow Withdrawn DE4427750A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT172293A ATA172293A (en) 1993-08-27 1993-08-27 LOAD AND CHOKER HOOKS FOR ROPE-CRANE MACHINES

Publications (1)

Publication Number Publication Date
DE4427750A1 true DE4427750A1 (en) 1995-03-09

Family

ID=3519598

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19944427750 Withdrawn DE4427750A1 (en) 1993-08-27 1994-08-05 Load and choker hook for automatic rope-operated cranes with entry bow

Country Status (2)

Country Link
AT (1) ATA172293A (en)
DE (1) DE4427750A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1134178A2 (en) * 2000-03-10 2001-09-19 FASSI GRU IDRAULICHE S.p.A. Limit stop device for lifting cranes, particularly cranes with telescopic arms
CN113772552A (en) * 2021-09-08 2021-12-10 山东博宇重工科技有限公司 Novel crane

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1134178A2 (en) * 2000-03-10 2001-09-19 FASSI GRU IDRAULICHE S.p.A. Limit stop device for lifting cranes, particularly cranes with telescopic arms
EP1134178A3 (en) * 2000-03-10 2002-11-06 FASSI GRU IDRAULICHE S.p.A. Limit stop device for lifting cranes, particularly cranes with telescopic arms
CN113772552A (en) * 2021-09-08 2021-12-10 山东博宇重工科技有限公司 Novel crane

Also Published As

Publication number Publication date
ATA172293A (en) 1997-05-15

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