EP2192075B1 - Block tackle - Google Patents

Block tackle Download PDF

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Publication number
EP2192075B1
EP2192075B1 EP09013573A EP09013573A EP2192075B1 EP 2192075 B1 EP2192075 B1 EP 2192075B1 EP 09013573 A EP09013573 A EP 09013573A EP 09013573 A EP09013573 A EP 09013573A EP 2192075 B1 EP2192075 B1 EP 2192075B1
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EP
European Patent Office
Prior art keywords
cover
rope
pulley
cover element
orifice
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EP09013573A
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German (de)
French (fr)
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EP2192075A1 (en
Inventor
Eckhard Dr.-Ing. Bube
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ABUS Kransysteme GmbH
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ABUS Kransysteme GmbH
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Publication of EP2192075A1 publication Critical patent/EP2192075A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D3/00—Portable or mobile lifting or hauling appliances
    • B66D3/04—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage

Definitions

  • the invention relates to a rope bottle, in particular a lower block for cables, with at least one of a cover with hood openings for a load rope surrounded pulley, wherein at least one relative to a hood opening slidably guided cover is provided, wherein the cover has a cable opening for the load rope and wherein the cable opening in the cover is smaller than the hood opening in the cover.
  • a rope bottle, in particular lower block for cables known, which has at least one of a cover hood with inlet and outlet openings for a load rope pulley, wherein in the inlet and outlet opening a cover is inserted, which has an opening for the load rope, and the opening in the cover is smaller than the inlet and outlet opening in the cover.
  • the inlet and outlet openings is slot-shaped and that the cover is displaceable in the inlet and outlet openings.
  • the cover element has a base strip curved in a circular manner in accordance with the outer edge of the cover, which rests flat on the outer surface of the edge of the cover.
  • the base strip extends approximately from the center in the way that a guide portion for the load rope in the form of a substantially rectangular triangle is formed, the corresponding curved hypotenuse is formed by the base strip.
  • the opening for the load rope in the cover is formed as a channel which extends from the base bar to one of the two outer Kathetenlick the guide portion.
  • the longitudinal extent of the channel extends in the plane of the pulley at an angle of 90 ° to an imaginary line running through the discharge point of the load rope from the pulley and the center of the pulley.
  • the cover covers the edges of the inlet and outlet outside with its base bar and inwardly with a retaining strip which engages behind the edges, so that the cover is mounted in the circumferential direction of the cover slidably on this.
  • the retaining strip thus lies with a the edge of the cover facing guide surface on the inner surface of the edge.
  • the retaining strip is attached via a central web bar on the underside of the base strip, so that the cover member has an H-shaped cross section in this area.
  • the lower block consists essentially of a central connecting element, which combines both the function of an axis for this purpose at both ends rotatably mounted pulleys and the function of a receiving element for a load hook in it.
  • the load hook is mounted for rotation about a vertical axis from below in the connecting element.
  • the two pulleys are coaxial with each other and rotatably mounted around which are connected to the cable load cables are guided.
  • the pulleys are provided with covers as accident protection. The covers should prevent the fingers or hands of the operator between rope and pulley are pulled and clamped.
  • Each cover is provided with two inlet and outlet openings so that the guided around the pulley load rope can enter the cover and exit again from this, the cable openings have a large longitudinal extent, since the opening angle between the two strands of the load cables depending on the Configuration of the cable and the distance between the cable and the bottom block may vary between about 0 ° and 30 °.
  • the drainage point of the load rope moves from the pulley in the region of the inlet and outlet openings. Since the diameter of the rope is only a fraction of the length of the inlet and outlet, it can continue to happen that the hand or the fingers an operator of the bottom block of the load rope are fed into the remaining space of the inlet and outlet opening.
  • German patent DE 34 05 759 C2 discloses a rope bottle with one or more mounted on a bearing axis pulleys, with both sides of the pulleys mounted on the bearing axis cover cheeks and with an anchoring means for the rope bottle.
  • the invention has for its object to provide a rope bottle of the type mentioned, in particular a lower block for cables, with improved safety and long life, which can be produced easily and inexpensively and when moving the load cable to a slight wear of the Lastseils leads.
  • the cover is arranged in strips and below the hood opening.
  • the cover is designed as a cover strip, which does not pass through the cover from above or behind, but is arranged below the hood opening.
  • the cover between the pulley and the cover in the circumferential direction is freely guided by the rope movable.
  • the cover in the circumferential direction can move partially, the end positions in the back and forth displacement of the cover by the respective top and bottom drainage point of the load rope from the pulley or the top and bottom entry point of the load rope in the groove area of the pulley and thus on the Range of hood openings are fixed.
  • the cover according to the invention has a structurally simple structure and can be moved at low frictional forces, without jamming of the cover on the cover or the pulley must be feared. Moreover, a low wear of the load rope and a high level of accident protection are ensured by the cover in the cable bottle according to the invention.
  • the end positions when moving back and forth of the cover are defined by the respective top and bottom drainage point of the load rope of the pulley or the top and bottom entry point of the load rope in the groove portion of the pulley, the cover is at least in the region of its transverse edges still covered by a partially the pulley peripheral edge of the cover, so that an effective engagement protection is ensured.
  • the cover element preferably has, in the case of a central arrangement of the cable opening in the cover element, a length which is greater than twice the length of the hood opening in the circumferential direction.
  • the cover can rest in the circumferential direction slidably on the pulley or be stored on the pulley.
  • the cover may have a substantially circular curved bar, which is adjacent to the radially outward flat side of the peripheral edge of the cover.
  • the bend of the cover is adapted to the bend of the edge of the cover.
  • On the pulley facing inner flat side of the cover may be provided extending in the region of the central longitudinal axis guide portion, wherein the guide portion projects beyond a flat edge region of the cover and engages in the groove portion of the pulley and wherein the guide portion is slidably guided on adjacent groove legs of the pulley.
  • the cover can be moved in a simple manner relative to the cover on the one hand and relative to the pulley on the other hand in the circumferential direction.
  • corresponding guide sections are provided on the inside of the edge at the edge of the cover, in which the cover element is displaceably guided.
  • the hood opening may have a same width over the entire length in the circumferential direction of the pulley, wherein the hood opening is formed by an area in the circumferential direction interrupting the edge of the cover.
  • the cover can then be designed as a bar with a constant width in the longitudinal or circumferential direction, which corresponds to the width of the hood opening or the distance between two cover the cover forming side walls of the cover. This contributes to a simple structural design of the cable bottle according to the invention,
  • the cable opening can be limited in the circumferential direction by an arcuate edge portion of the cover to reduce the wear on incoming and outgoing load rope to the cover.
  • the cable opening can also be designed as a slot.
  • the load rope runs in or out of rounded or chamfered edges of the cover member to reduce the frictional forces when moving the load rope.
  • the cover may comprise at least one in the radial direction over the edge of the cover projecting or aligned with the edge of the cover stop bevel, the stop slope limits the cable opening in the circumferential direction, the load rope on the stop slope on or expires and wherein the stop slope comes on reaching an upper inlet or discharge point or a lowest inlet or discharge point of the load rope from the pulley against the edge of the cover to the plant.
  • the incoming or outgoing load rope thus does not rub against the cover, which contributes to low wear.
  • the cable opening is provided in the region of the central transverse axis of the cover.
  • the cover element preferably has a length in the circumferential direction which corresponds at least to twice the length of the hood opening. This ensures that the hood opening is closed at each possible inlet or, drainage point of the load rope of the cover, wherein the load rope on or runs through the cable opening in the cover.
  • the width of the cable opening in the cover can be 1.2 to 2 times, in particular 1.5 times, the diameter of the load rope correspond. In the case of a circular rope opening, this applies correspondingly to the diameter of the rope opening.
  • the cover is formed in several parts, wherein a division axis or parting plane passes through the rope opening.
  • two strip-shaped cover members may be provided, which are detachably connectable to one another via the longitudinal sides, wherein the rope opening is formed between the longitudinal sides.
  • a first cover with a circumferentially extending from a cable opening to a transverse edge of the first cover part longitudinal recess and a second cover for closing the longitudinal recess are provided, wherein the longitudinal recess in the region of the central longitudinal axis of the first cover extends.
  • the first cover member may be formed in the circumferential direction substantially U-shaped with two longitudinally extending spaced apart edge webs, between which the longitudinal recess is imaged.
  • the load cable can be threading over the longitudinal recess in the rope opening after separating the two cover parts.
  • the second cover member is then reconnected to the first cover member to close the longitudinal recess, resulting in that the load rope is securely guided in the limited by the two cover parts rope opening.
  • the cover can be formed as a shaped part of sheet metal and bent according to the shape of the pulley and / or the cover, so that in particular a stirring is ensured on the pulley.
  • the cover can also be made of an elastic material, in particular made of plastic, so that the cover automatically adapts during assembly to the shape of the pulley and / or the cover.
  • the wear on the load rope is reduced when using a cover made of plastic.
  • Fig. 1 is a perspective view of a lower block 1 according to the invention shown, which is suspended on pulleys 2 guided pairs of load cables 3 on a cable, not shown.
  • the lower block 1 consists essentially of a central connecting element, not shown, with two laterally mounted pulleys 2 and a hook 4 hung thereon from below.
  • the load hook 4 is mounted rotatably about a vertical axis on the connecting element, as shown in FIG DE 103 11 424 B3 is described.
  • the coaxially arranged and separated by the connecting element pulleys 2 are each surrounded by circular covers 5, which are divided into an outer hood part 6 and an inner hood part 7 in the plane of the pulley 2.
  • the hood parts 6, 7 are disc-shaped and connected to each other via a peripheral edge 8.
  • the two hood parts 6, 7 limit together with the edge of the 8th a flat cylindrical cavity for receiving the pulley 2, the edge 8 may be part of a hood part 6, 7.
  • Fig. 1 the cover 5 of the front pulley 2 is shown cut open, so that the view of the pulley 2 is released.
  • each cover 5 two hood openings are provided for the inlet of the load rope 3 on the pulley 2 and for its expiry of the pulley 2.
  • the hood openings have in the circumferential direction of the pulley 2 and the cover 5 seen a length L, which corresponds to a multiple of the diameter of the load cable 3.
  • the length L is required, since during operation of the cable the angle between the runs of the load cables 3 varies and thus the flow point of the load cable 3 from the pulley 2 changes.
  • the length of the hood opening can be about 90 ° relative to the circumference of the cable pulley 2 or the cover 5.
  • the hood opening has over the entire length L in the circumferential direction an equal width, wherein the hood opening is formed by a circumferentially partially undercutting the edge 8 of the cover 5.
  • the existing length L of the hood opening prevents it, that the load rope 3 at the edge 8 of the cover 5 personallyschleift and thereby can take damage. This is particularly important when the covers 8 are formed as sheet metal parts.
  • Fig. 1 shows, the lower block 1 relative to the hood openings in the circumferential direction slidably guided cover elements 9, wherein each cover 9 has a cable opening 10 for the load cable 3 and wherein the cable opening 10 in the cover 9 is smaller than the hood opening in the cover 5.
  • the cover 9 the size of the hood openings is reduced to the size of the cable opening 10, thereby successfully preventing a hand or a finger of the operator from the load rope 3 can be pulled into the hood opening.
  • the cover 9 is strip-shaped and arranged between the cover 5 and the pulley 2 in the circumferential direction of the pulley 2 slidably.
  • the cover elements 9 are guided free of the load cable 3 and moved in the circumferential direction. This results in a simple structural design of the lower block 1 with low production costs and high accident prevention. Jamming or tilting of the cover 9 on the cover 5 is not to be feared.
  • the displacement of the cover 9 in the circumferential direction of the pulley 2 is determined by the position of the respective run or inlet point of the load cable 3 in the region of a hood opening , In this case, the cover member 9 is still covered at maximum displacement in the circumferential direction, at least in the region of its transverse edges 11 of the edge 8 of the cover 5, so that a secure closure of the hood opening is guaranteed at each possible drain or inlet point of the load cable 3.
  • the cover 9 can rest in the circumferential direction of the pulley 2 slidably on the pulley 2.
  • the covering element 9 can have a guide section 13 extending in the region of the central longitudinal axis on the inner side 12 facing the cable pulley 2, wherein the guide section 13 engages in the groove region 14 of the cable pulley 2.
  • the groove portion 14 of the pulley 2 is limited by two groove legs 15, wherein the guide portion 13 can be guided on inner surfaces 16 of adjacent groove legs 15 of the pulley 2 slidably. This is in Fig. 5 shown.
  • the guide section 13 projects beyond the longitudinal edges 17 of the cover element 9 in the direction of the groove area 14, wherein the longitudinal edges 17 do not rest on the longitudinal edges 18 of the groove legs 15.
  • the cover 9 is wave-shaped with substantially constant thickness.
  • the guide portion 13 is formed by an engaging in the groove portion 14 arcuate portion of the cover 9, wherein the cover 9 abuts in the region of the guide portion 13 against the inner surfaces 16 of the groove legs 15 and is guided.
  • the longitudinal edges 17 of the cover 9 are again not on the groove legs 15.
  • the cover 9 has a bulged guide portion 13 which projects beyond the longitudinal edges 17 in the direction of the groove portion 14 and engages in the groove portion 14.
  • the cover 9 is on the inner side 12 on the one hand with the longitudinal edges 17 on the longitudinal edges 18 of the groove legs 15 and the other partially with the guide portion 13 on the inner surfaces 16 of the groove legs 15.
  • the cover 9 has a trained as a slot rope opening 10 for the load cable 3.
  • the cable opening 10 is provided in the region of the central transverse axis X of the cover 9 and divides the cover 9 in two halves, each half may have an equal length.
  • the width b of the rope opening 10 may preferably correspond to 1.2 to 2 times, in particular 1.5 times, the diameter of the load rope 3.
  • the cover member 9 is formed in several parts, wherein a dividing axis Y 1, the cable opening 10 intersects.
  • the pitch axis Y 1 extends between two strip-shaped cover members 20, 21, wherein the cover members 20, 21 on adjacent longitudinal sides 22, 23 are releasably connectable to each other.
  • the cover member 21 has transversely to the circumferential direction in the form of a U-shaped and circumferentially curved frame into which the cover member 20 can be inserted in the direction of the central transverse axis X of the cover 9.
  • the cable opening 10 is formed.
  • the division of the cover 9 in the longitudinal or circumferential direction allows the removal of the pulley 2 with retracted load cable. 3
  • the cover 9 is integrally formed.
  • the cover 9 preferably made of an elastic material, in particular made of plastic, so that the cover 9 during assembly to the radius of the pulley 2 automatically adapts.
  • the wear on the load rope 3 is reduced in a covering element 9 made of plastic.
  • a further embodiment of a cover 9 is shown, wherein the cover 9 has a first cover 24 with a circumferentially extending from the cable opening 10 to a transverse edge 26 of the first cover 24 longitudinal recess in the region of the central longitudinal axis Y 2 .
  • a second cover member 25 is provided, which can be inserted over the transverse edges 26 of the first cover member 24 in the circumferential direction in the longitudinal recess.
  • the first cover part 24 is U-shaped in the circumferential direction and has two web-shaped and curved edge sections 27 extending in the circumferential direction.
  • the band sections 27 delimit the longitudinal recess, wherein after the separation of the two cover parts 24, 25, the load cable 3 can be threaded over the longitudinal recess into the region of the cable opening 10. Subsequently, the cover 25 is then reconnected to the cover 24, so that the load cable 3 is guided securely in the cable opening 10.
  • a plug connection between the two cover parts 24, 25 may be provided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)
  • Electric Cable Arrangement Between Relatively Moving Parts (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Guides For Winding Or Rewinding, Or Guides For Filamentary Materials (AREA)
  • Suspension Of Electric Lines Or Cables (AREA)
  • Emergency Lowering Means (AREA)

Abstract

The pulley i.e. lower pulley (1), has a cable roller (2) surrounded by a cover plate (5) with a plate opening for a load cable (3). A covering unit (9) is movable relative to the plate opening and has a cable opening for the load cable. The unit (9) is designed in a laminar manner and arranged below the plate opening, where the unit (9) is made from an elastic material e.g. plastic. The unit (9) is covered by an edge (8) of the plate during the maximum movement of the unit (9) in a circumferential direction of the roller in an area of transverse edges of the unit (9).

Description

Die Erfindung betrifft eine Seilflasche, insbesondere eine Unterflasche für Seilzüge, mit wenigstens einer von einer Abdeckhaube mit Haubenöffnungen für ein Lastseil umgebenen Seilrolle, wobei wenigstens ein relativ zur einer Haubenöffnung verschiebbar geführtes Abdeckelement vorgesehen ist, wobei das Abdeckelement eine Seilöffnung für das Lastseil aufweist und wobei die Seilöffnung in dem Abdeckelement kleiner als die Haubenöffnung in der Abdeckhaube ist.The invention relates to a rope bottle, in particular a lower block for cables, with at least one of a cover with hood openings for a load rope surrounded pulley, wherein at least one relative to a hood opening slidably guided cover is provided, wherein the cover has a cable opening for the load rope and wherein the cable opening in the cover is smaller than the hood opening in the cover.

Aus der DE 103 11 424 B3 ist eine Seilflasche, insbesondere Unterflasche für Seilzüge, bekannt, die mindestens eine von einer Abdeckhaube mit Ein- und Austrittsöffnungen für ein Lastseil umgebene Seilrolle aufweist, wobei in die Ein- und Austrittsöffnung ein Abdeckelement eingesetzt ist, das eine Öffnung für das Lastseil aufweist, und die Öffnung in dem Abdeckelement kleiner als die Ein- und Austrittsöffnung in der Abdeckhaube ist. Um eine Seilflasche mit einem verbesserten Unfallschutz zu schaffen, wird in der DE 103 11 424 B3 vorgeschlagen, daß die Ein- und Austrittsöffnung schlitzförmig ist und daß das Abdeckelement in der Ein- und Austrittsöffnung verschiebbar ist. Das Abdeckelement weist hierzu eine entsprechend dem Außenrand der Abdeckhaube kreisförmig gebogene Grundleiste auf, die flächig auf der Außenfläche des Randes der Abdeckhaube aufliegt. In Umfangsrichtung der Abdeckhaube erweitert sich die Grundleiste etwa ab deren Mitte in der Art, daß ein Führungsbereich für das Lastseil in Form eines im wesentlichen rechtwinkligen Dreiecks entsteht, dessen entsprechend gekrümmte Hypotenuse von der Grundleiste gebildet wird. Die Öffnung für das Lastseil in dem Abdeckelement ist als Kanal ausgebildet, der sich von der Grundleiste zu einer der beiden äußeren Kathetenseiten des Führungsbereichs erstreckt. Die Längserstreckung des Kanals verläuft in der Ebene der Seilrolle in einem Winkel von 90° zu einer durch den Ablaufpunkt des Lastseils von der Seilrolle und dem Mittelpunkt der Seilrolle verlaufenden gedachten Geraden. Das Abdeckelement überdeckt die Ränder der Ein- und Austrittsöffnung außen mit seiner Grundleiste und nach innen mit einer Halteleiste, die die Ränder hintergreift, so daß das Abdeckelement in Umfangsrichtung der Abdeckhaube verschiebbar an dieser befestigt ist. Die Halteleiste liegt somit mit einer dem Rand der Abdeckhaube hinzugewandten Führungsfläche an der Innenfläche des Randes an. Hierfür ist die Halteleiste über eine mittige Stegleiste an der Unterseite der Grundleiste befestigt, so daß das Abdeckelement in diesem Bereich einen H-förmigen Querschnitt aufweist.From the DE 103 11 424 B3 is a rope bottle, in particular lower block for cables, known, which has at least one of a cover hood with inlet and outlet openings for a load rope pulley, wherein in the inlet and outlet opening a cover is inserted, which has an opening for the load rope, and the opening in the cover is smaller than the inlet and outlet opening in the cover. In order to create a rope bottle with an improved accident protection, is in the DE 103 11 424 B3 proposed that the inlet and outlet openings is slot-shaped and that the cover is displaceable in the inlet and outlet openings. For this purpose, the cover element has a base strip curved in a circular manner in accordance with the outer edge of the cover, which rests flat on the outer surface of the edge of the cover. In the circumferential direction of the cover, the base strip extends approximately from the center in the way that a guide portion for the load rope in the form of a substantially rectangular triangle is formed, the corresponding curved hypotenuse is formed by the base strip. The opening for the load rope in the cover is formed as a channel which extends from the base bar to one of the two outer Kathetenseiten the guide portion. The longitudinal extent of the channel extends in the plane of the pulley at an angle of 90 ° to an imaginary line running through the discharge point of the load rope from the pulley and the center of the pulley. The cover covers the edges of the inlet and outlet outside with its base bar and inwardly with a retaining strip which engages behind the edges, so that the cover is mounted in the circumferential direction of the cover slidably on this. The retaining strip thus lies with a the edge of the cover facing guide surface on the inner surface of the edge. For this purpose, the retaining strip is attached via a central web bar on the underside of the base strip, so that the cover member has an H-shaped cross section in this area.

Das aus der DE 103 11 424 B3 bekannte Abdeckelement weist einen konstruktiv aufwendigen Aufbau auf. Im übrigen kommt es aufgrund der Rührung des Lastseiles in der als Kanal ausgebildeten Öffnung in dem Abdeckelement zu einer verstärkten Reibung, die den Verschleiß des Lastseils beschleunigt. Da die Stegleiste des Abdeckelementes in einem Spalt der Abdeckhaube geführt ist, wobei das Abdeckelement die Abdeckhaube durchgreift, kommt es auch hier zu erhöhten Reibkräften und einer erhöhten Gefahr des Verkantens des Abdeckelementes an der Abdeckhaube.That from the DE 103 11 424 B3 known cover member has a structurally complex structure. Moreover, it comes due to the stirring of the load cable in the channel formed as opening in the cover to increased friction, which accelerates the wear of the load rope. Since the web bar of the cover is guided in a gap of the cover, wherein the cover engages through the cover, it also comes here to increased frictional forces and increased risk of tilting of the cover on the cover.

Aus dem deutschen Patent DE 196 02 931 C2 ist eine Unterflasche für Seilzüge bekannt. Die Unterflasche besteht im wesentlichen aus einem zentralen Verbindungselement, das sowohl die Funktion einer Achse für hieran an beiden Enden drehbar gelagerte Seilrollen als auch die Funktion eines Aufnahmeelementes für einen Lasthaken in sich vereint. Der Lasthaken ist um eine vertikale Achse drehbar von unten in dem Verbindungselement gelagert. An gegenüberliegenden Seiten des Verbindungselementes sind die beiden Seilrollen koaxial zueinander sowie drehbar gelagert, um die die mit dem Seilzug verbundenen Lastseile geführt sind. Die Seilrollen sind mit Abdeckhauben als Unfallschutz versehen. Die Abdeckhauben sollen verhindern, daß die Finger bzw. Hände des Bedieners zwischen Seil und Seilrolle eingezogen und eingeklemmt werden. Jede Abdeckhaube ist mit zwei Ein- und Austrittsöffnungen versehen, damit das um die Seilrolle geführte Lastseil in die Abdeckhaube eintreten sowie wieder aus dieser austreten kann, Die Seilöffnungen weisen eine große Längserstreckung auf, da der Öffnungswinkel zwischen den beiden Trumen der Lastseile in Abhängigkeit von der Ausgestaltung des Seilzugs und des Abstandes zwischen dem Seilzug und der Unterflasche etwa zwischen 0° und 30° variieren kann. Entsprechender Weise wandert der Ablaufpunkt des Lastseiles von der Seilrolle im Bereich der Ein- und Austrittsöffnungen. Da der Durchmesser des Seils nur einen Bruchteil der Länge der Ein- und Austrittsöffnung beträgt, kann es weiterhin passieren, daß die Hand oder die Finger eines Bedieners der Unterflasche von dem Lastseil in den verbleibenden Freiraum der Ein- und Austrittsöffnung eingezogen werden.From the German patent DE 196 02 931 C2 is a sub-bottle for cables known. The lower block consists essentially of a central connecting element, which combines both the function of an axis for this purpose at both ends rotatably mounted pulleys and the function of a receiving element for a load hook in it. The load hook is mounted for rotation about a vertical axis from below in the connecting element. On opposite sides of the connecting element, the two pulleys are coaxial with each other and rotatably mounted around which are connected to the cable load cables are guided. The pulleys are provided with covers as accident protection. The covers should prevent the fingers or hands of the operator between rope and pulley are pulled and clamped. Each cover is provided with two inlet and outlet openings so that the guided around the pulley load rope can enter the cover and exit again from this, the cable openings have a large longitudinal extent, since the opening angle between the two strands of the load cables depending on the Configuration of the cable and the distance between the cable and the bottom block may vary between about 0 ° and 30 °. Correspondingly, the drainage point of the load rope moves from the pulley in the region of the inlet and outlet openings. Since the diameter of the rope is only a fraction of the length of the inlet and outlet, it can continue to happen that the hand or the fingers an operator of the bottom block of the load rope are fed into the remaining space of the inlet and outlet opening.

Das deutsche Patent DE 34 05 759 C2 offenbart eine Seilflasche mit einer oder mehreren auf einer Lagerachse gelagerten Seilrollen, mit beidseitig der Seilrollen auf der Lagerachse befestigten Deckelwangen und mit einem Verankerungsmittel für die Seilflasche.The German patent DE 34 05 759 C2 discloses a rope bottle with one or more mounted on a bearing axis pulleys, with both sides of the pulleys mounted on the bearing axis cover cheeks and with an anchoring means for the rope bottle.

Der Erfindung liegt die Aufgabe zugrunde, eine Seilflasche der eingangs genannten Art, insbesondere eine Unterflasche für Seilzüge, mit einem verbesserten Unfallschutz und langer Haltbarkeit zu schaffen, die sich in einfacher Weise und kostengünstig herstellen läßt und beim Bewegen des Lastseils zu einem nur geringen Verschleiß des Lastseils führt.The invention has for its object to provide a rope bottle of the type mentioned, in particular a lower block for cables, with improved safety and long life, which can be produced easily and inexpensively and when moving the load cable to a slight wear of the Lastseils leads.

Diese Aufgabe wird erfindungsgemäß bei einer Seilflasche der eingangs genannten Art dadurch gelöst, daß das Abdeckelement streifenförmig und unterhalb von der Haubenöffnung angeordnet ist. Bei der erfindungsgemäßen Seilflasche ist das Abdeckelement als Abdeckleiste ausgebildet, die die Abdeckhaube nicht von oben durch- oder hintergreift, sondern unterhalb von der Haubenöffnung angeordnet ist. Dabei ist das Abdeckelement zwischen der Seilrolle und der Abdeckhaube in Umfangsrichtung frei durch das Seil bewegbar geführt. Letztlich läßt sich das Abdeckelement in Umfangsrichtung bereichsweise verschieben, wobei die Endpositionen beim Hin- und Herverschieben des Abdeckelementes durch den jeweiligen obersten und untersten Ablaufpunkt des Lastseiles von der Seilrolle bzw. den obersten und untersten Einlaufpunkt des Lastseils in den Rillenbereich der Seilrolle und damit auf den Bereich der Haubenöffnungen festgelegt sind. Das erfindungsgemäße Abdeckelement weist einen konstruktiv einfachen Aufbau auf und läßt sich bei geringen Reibkräften verschieben, ohne das ein Verkanten des Abdeckelementes an der Abdeckhaube oder der Seilrolle befürchtet werden muß. Im übrigen werden durch das Abdeckelement bei der erfindungsgemäßen Seilflasche ein geringer Verschleiß des Lastseils und ein hoher Unfallschutz gewährleistet.This object is achieved in a rope bottle of the type mentioned fact that the cover is arranged in strips and below the hood opening. In the rope bottle according to the invention, the cover is designed as a cover strip, which does not pass through the cover from above or behind, but is arranged below the hood opening. In this case, the cover between the pulley and the cover in the circumferential direction is freely guided by the rope movable. Finally, the cover in the circumferential direction can move partially, the end positions in the back and forth displacement of the cover by the respective top and bottom drainage point of the load rope from the pulley or the top and bottom entry point of the load rope in the groove area of the pulley and thus on the Range of hood openings are fixed. The cover according to the invention has a structurally simple structure and can be moved at low frictional forces, without jamming of the cover on the cover or the pulley must be feared. Moreover, a low wear of the load rope and a high level of accident protection are ensured by the cover in the cable bottle according to the invention.

Bei maximaler Verschiebung des Abdeckelementes in Umfangsrichtung der Seilrolle, wobei die Endpositionen beim Hin- und Herverschieben des Abdeckelementes durch den jeweiligen obersten und untersten Ablaufpunkt des Lastseiles von der Seilrolle bzw. den obersten und untersten Einlaufpunkt des Lastseils in den Rillenbereich der Seilrolle festgelegt sind, ist das Abdeckelement zumindest im Bereich seiner Querränder noch von einem bereichsweise die Seilrolle umlaufenden Rand der Abdeckhaube überdeckt, so daß ein wirkungsvoller Eingriffschutz gewährleistet ist. Vorzugsweise weist das Abdeckelement in diesem Zusammenhang bei mittiger Anordnung der Seilöffnung im Abdeckelement eine Länge auf, die größer als die zweifache Länge der Haubenöffnung in Umfangsrichtung ist.At maximum displacement of the cover in the circumferential direction of the pulley, the end positions when moving back and forth of the cover are defined by the respective top and bottom drainage point of the load rope of the pulley or the top and bottom entry point of the load rope in the groove portion of the pulley, the cover is at least in the region of its transverse edges still covered by a partially the pulley peripheral edge of the cover, so that an effective engagement protection is ensured. In this context, the cover element preferably has, in the case of a central arrangement of the cable opening in the cover element, a length which is greater than twice the length of the hood opening in the circumferential direction.

Das Abdeckelement kann in Umfangsrichtung verschiebbar auf der Seilrolle aufliegen bzw. auf der Seilrolle gelagert sein. Bei dieser Ausführungsform kann das Abdeckelement eine im wesentlichen kreisförmig gebogene Leiste aufweisen, die mit der in radialer Richtung außen liegenden Flachseite an den umlaufenden Rand der Abdeckhaube angrenzt. Die Abbiegung des Abdeckelementes ist dabei an die Abbiegung des Randes der Abdeckhaube angepaßt. Auf der der Seilrolle zugewandten inneren Flachseite des Abdeckelementes kann ein im Bereich der Mittellängsachse verlaufender Führungsabschnitt vorgesehen sein, wobei der Führungsabschnitt über einen flachen Randbereich des Abdeckelementes übersteht und in den Rillenbereich der Seilrolle eingreift und wobei der Führungsabschnitt auf benachbarten Rillenschenkeln der Seilrolle verschiebbar geführt ist. Dadurch läßt sich das Abdeckelement in einfacher Weise relativ zur Abdeckhaube einerseits und relativ zur Seilrolle andererseits in Umfangsrichtung verschieben. Grundsätzlich ist es aber auch möglich, daß an dem Rand der Abdeckhaube entsprechende Führungsabschnitte auf der Innenseite des Randes vorgesehen sind, in denen das Abdeckelement verschiebbar geführt ist.The cover can rest in the circumferential direction slidably on the pulley or be stored on the pulley. In this embodiment, the cover may have a substantially circular curved bar, which is adjacent to the radially outward flat side of the peripheral edge of the cover. The bend of the cover is adapted to the bend of the edge of the cover. On the pulley facing inner flat side of the cover may be provided extending in the region of the central longitudinal axis guide portion, wherein the guide portion projects beyond a flat edge region of the cover and engages in the groove portion of the pulley and wherein the guide portion is slidably guided on adjacent groove legs of the pulley. As a result, the cover can be moved in a simple manner relative to the cover on the one hand and relative to the pulley on the other hand in the circumferential direction. In principle, however, it is also possible that corresponding guide sections are provided on the inside of the edge at the edge of the cover, in which the cover element is displaceably guided.

Die Haubenöffnung kann über die gesamte Länge in Umfangsrichtung der Seilrolle eine gleiche Breite aufweisen, wobei die Haubenöffnung durch eine in Umfangsrichtung bereichsweise Unterbrechung des Randes der Abdeckhaube gebildet wird. Das Abdeckelement kann dann als Leiste mit einer in Längs- bzw. Umfangsrichtung gleichbleibenden Breite ausgebildet sein, die der Breite der Haubenöffnung bzw. dem Abstand zwischen zwei die Abdeckhaube bildenden Seitenwänden der Abdeckhaube entspricht. Dies trägt zu einem einfachen konstruktiven Aufbau der erfindungsgemäßen Seilflasche bei,The hood opening may have a same width over the entire length in the circumferential direction of the pulley, wherein the hood opening is formed by an area in the circumferential direction interrupting the edge of the cover. The cover can then be designed as a bar with a constant width in the longitudinal or circumferential direction, which corresponds to the width of the hood opening or the distance between two cover the cover forming side walls of the cover. This contributes to a simple structural design of the cable bottle according to the invention,

Die Seilöffnung kann in Umfangsrichtung durch einen kreisbogenförmigen Randabschnitt des Abdeckelementes begrenzt werden, um den Verschleiß beim ein- und auslaufenden Lastseil an dem Abdeckelement zu verringern. Die Seilöffnung kann auch als Langloch ausgebildet sein. Vorzugsweise läuft das Lastseil an gerundeten oder angefasten Kanten des Abdeckelementes ein- bzw. ab, um die Reibungskräfte beim Bewegen des Lastseils zu verringern.The cable opening can be limited in the circumferential direction by an arcuate edge portion of the cover to reduce the wear on incoming and outgoing load rope to the cover. The cable opening can also be designed as a slot. Preferably, the load rope runs in or out of rounded or chamfered edges of the cover member to reduce the frictional forces when moving the load rope.

Um den Verschleiß weiter zu verringern, kann das Abdeckelement wenigstens eine in radialer Richtung über den Rand der Abdeckhaube überstehende oder mit dem Rand der Abdeckhaube ausgefluchtete Anschlagschräge aufweisen, wobei die Anschlagschräge die Seilöffnung in Umfangsrichtung begrenzt, wobei das Lastseil an der Anschlagschräge ein- bzw. ausläuft und wobei die Anschlagschräge bei Erreichen eines obersten Einlauf- bzw. Ablaufpunktes oder eines untersten Einlauf- bzw. Ablaufpunktes des Lastseils von der Seilrolle gegen den Rand der Abdeckhaube zur Anlage kommt. Das ein- bzw. auslaufende Lastseil reibt somit nicht an der Abdeckhaube, was zu einem geringen Verschleiß beiträgt.To further reduce wear, the cover may comprise at least one in the radial direction over the edge of the cover projecting or aligned with the edge of the cover stop bevel, the stop slope limits the cable opening in the circumferential direction, the load rope on the stop slope on or expires and wherein the stop slope comes on reaching an upper inlet or discharge point or a lowest inlet or discharge point of the load rope from the pulley against the edge of the cover to the plant. The incoming or outgoing load rope thus does not rub against the cover, which contributes to low wear.

Bei einer weiter bevorzugten Ausführungsform der Erfindung ist die Seilöffnung im Bereich der Mittelquerachse des Abdeckelementes vorgesehen. Bei mittig angeordneter Seilöffnung weist das Abdeckelement vorzugsweise eine Länge in Umfangsrichtung auf, die zumindest der doppelten Länge der Haubenöffnung entspricht. Dadurch wird sichergestellt, daß die Haubenöffnung bei jedem möglichen Einlauf- bzw, Ablaufpunkt des Lastseils von dem Abdeckelement verschlossen ist, wobei das Lastseil durch die Seilöffnung in dem Abdeckelement ein- bzw. abläuft.In a further preferred embodiment of the invention, the cable opening is provided in the region of the central transverse axis of the cover. When the cable opening is arranged centrally, the cover element preferably has a length in the circumferential direction which corresponds at least to twice the length of the hood opening. This ensures that the hood opening is closed at each possible inlet or, drainage point of the load rope of the cover, wherein the load rope on or runs through the cable opening in the cover.

Die Breite der Seilöffnung in dem Abdeckelement kann dem 1,2 bis 2-fachen, insbesondere dem 1,5-fachen, des Durchmessers des Lastseils entsprechen. Bei einer kreisförmigen Seilöffnung gilt dies entsprechend für den Durchmesser der Seilöffnung. Durch eine ausreichende Größe der Seilöffnung wird der Verschleiß des Lastseils verringert,The width of the cable opening in the cover can be 1.2 to 2 times, in particular 1.5 times, the diameter of the load rope correspond. In the case of a circular rope opening, this applies correspondingly to the diameter of the rope opening. By a sufficient size of the rope opening the wear of the load rope is reduced,

Um das Abdeckelement in einfacher Weise nachrüsten und die Seilrolle austauschen zu können, ist bei einer weiter bevorzugten Ausführungsform der Erfindung vorgesehen, daß das Abdeckelement mehrteilig ausgebildet ist, wobei eine Teilungsachse bzw. Trennebene durch die Seilöffnung verläuft. Vorzugsweise können zwei streifenförmige Abdeckteile vorgesehen sein, die über die Längsseiten lösbar miteinander verbindbar sind, wobei zwischen den Längsseiten die Seilöffnung gebildet wird. Es ist aber auch möglich, daß ein erstes Abdeckteil mit einer sich in Umfangsrichtung von einer Seilöffnung bis zu einem Querrand des ersten Abdeckteils erstreckenden Längsausnehmung und ein zweites Abdeckteil zum Verschließen der Längsausnehmung vorgesehen sind, wobei die Längsausnehmung im Bereich der Mittellängsachse des ersten Abdeckteils verläuft. Das erste Abdeckteil kann in Umfangsrichtung im wesentlichen U-förmig ausgebildet sein mit zwei sich in Längsrichtung erstreckenden voneinander beabstandeten Randstegen, zwischen denen die Längsausnehmung bebildet wird. Damit läßt sich das Lastseil nach dem Trennen der beiden Abdeckteile über die Längsausnehmung in die Seilöffnung einfädeln. Anschließend wird dann das zweite Abdeckteil wieder mit dem ersten Abdeckteil verbunden, um die Längsausnehmung zu verschließen, was dazu führt, daß das Lastseil in der von den beiden Abdeckteilen begrenzten Seilöffnung sicher geführt ist.In order to retrofit the cover in a simple manner and replace the pulley is provided in a further preferred embodiment of the invention that the cover is formed in several parts, wherein a division axis or parting plane passes through the rope opening. Preferably, two strip-shaped cover members may be provided, which are detachably connectable to one another via the longitudinal sides, wherein the rope opening is formed between the longitudinal sides. But it is also possible that a first cover with a circumferentially extending from a cable opening to a transverse edge of the first cover part longitudinal recess and a second cover for closing the longitudinal recess are provided, wherein the longitudinal recess in the region of the central longitudinal axis of the first cover extends. The first cover member may be formed in the circumferential direction substantially U-shaped with two longitudinally extending spaced apart edge webs, between which the longitudinal recess is imaged. Thus, the load cable can be threading over the longitudinal recess in the rope opening after separating the two cover parts. Subsequently, the second cover member is then reconnected to the first cover member to close the longitudinal recess, resulting in that the load rope is securely guided in the limited by the two cover parts rope opening.

Das Abdeckelement kann als Formteil aus Blech ausgebildet und entsprechend der Form der Seilrolle und/oder der Abdeckhaube gebogen sein, so daß insbesondere eine Rührung auf der Seilrolle gewährleistet ist. Vorzugsweise kann das Abdeckelement aber auch aus einem elastischen Material, insbesondere aus Kunststoff, hergestellt sein, so daß sich das Abdeckelement bei der Montage selbsttätig an die Form der Seilrolle und/oder der Abdeckhaube anpaßt. Zudem wird bei Einsatz eines Abdeckelementes aus Kunststoff der Abrieb an dem Lastseil verringert.The cover can be formed as a shaped part of sheet metal and bent according to the shape of the pulley and / or the cover, so that in particular a stirring is ensured on the pulley. Preferably, however, the cover can also be made of an elastic material, in particular made of plastic, so that the cover automatically adapts during assembly to the shape of the pulley and / or the cover. In addition, the wear on the load rope is reduced when using a cover made of plastic.

Nachfolgend wird die Erfindung anhand der Zeichnung exemplarisch beschrieben, wobei die Erfindung nicht auf die in der Zeichnung offenbarten Ausführungsbeispiele beschränkt ist.The invention will be described by way of example with reference to the drawing, the invention not being limited to the embodiments disclosed in the drawing.

In der Zeichnung zeigen

Fig. 1
eine perspektivische Darstellung einer Unterflasche mit zwei Seilrollen,
Fig. 2
eine perspektivische Ansicht einer ersten Ausführungsform eines Abdeckelementes der in Fig. 1 dargestellten Unterflasche,
Fig. 3
eine perspektivische Ansicht einer zweiten Ausführungsform ei- nes Abdeckelementes,
Fig. 4
eine perspektivische Ansicht einer dritten Ausführungsform eines Abdeckelementes,
Fig. 5
eine Querschnittsansicht des in Fig. 2 dargestellten Abdeckele- mentes entlang der Schnittlinie A-A,
Fig. 6
eine Querschnittsansicht einer zweiten Ausführungsform eines Abdeckelementes und
Fig. 7
ein Querschnittsansicht einer dritten Ausführungsform eines Ab- deckelementes .
In the drawing show
Fig. 1
a perspective view of a lower block with two pulleys,
Fig. 2
a perspective view of a first embodiment of a cover of the in Fig. 1 illustrated lower bottle,
Fig. 3
a perspective view of a second embodiment of a cover member,
Fig. 4
a perspective view of a third embodiment of a cover,
Fig. 5
a cross-sectional view of in Fig. 2 illustrated Abdeckele- Mentes along the section line AA,
Fig. 6
a cross-sectional view of a second embodiment of a cover and
Fig. 7
a cross-sectional view of a third embodiment of a cover element.

In Fig. 1 ist eine perspektivische Ansicht einer erfindungsgemäßen Unterflasche 1 gezeigt, die über um Seilrollen 2 geführte Paare von Lastseilen 3 an einem nicht dargestellten Seilzug aufgehängt ist. Die Unterflasche 1 besteht im wesentlichen aus einem zentralen nicht gezeigten Verbindungselement mit zwei seitlich gelagerten Seilrollen 2 und einem von unten hieran aufgehängtem Lasthaken 4. Der Lasthaken 4 ist um eine vertikale Achse drehbar an dem Verbindungselement gelagert, so wie dies in der DE 103 11 424 B3 beschrieben ist.In Fig. 1 is a perspective view of a lower block 1 according to the invention shown, which is suspended on pulleys 2 guided pairs of load cables 3 on a cable, not shown. The lower block 1 consists essentially of a central connecting element, not shown, with two laterally mounted pulleys 2 and a hook 4 hung thereon from below. The load hook 4 is mounted rotatably about a vertical axis on the connecting element, as shown in FIG DE 103 11 424 B3 is described.

Die koaxial zueinander angeordneten und über das Verbindungselement voneinander beabstandeten Seilrollen 2 sind jeweils von kreisförmigen Abdeckhauben 5 umgeben, die in ein äußeres Haubenteil 6 und in ein inneren Haubenteil 7 in der Ebene der Seilrolle 2 geteilt sind. Die Haubenteile 6, 7 sind scheibenförmig ausgebildet und über einen umlaufenden Rand 8 miteinander verbunden. Die beiden Haubenteile 6, 7 begrenzen zusammen mit dem Rand 8 einen flachzylindrischen Hohlraum zur Aufnahme der Seilrolle 2, Der Rand 8 kann Bestandteil eines Haubenteils 6, 7 sein. Es können auch schalen- oder tellerförmig ausgebildete Haubenteile 6, 7 vorgesehen sein, wobei die Ränder der Haubenteile 6, 7 gegeneinander anliegen. In Fig. 1 ist die Abdeckhaube 5 der vorderen Seilrolle 2 aufgeschnitten dargestellt, so daß der Blick auf die Seilrolle 2 freigegeben ist.The coaxially arranged and separated by the connecting element pulleys 2 are each surrounded by circular covers 5, which are divided into an outer hood part 6 and an inner hood part 7 in the plane of the pulley 2. The hood parts 6, 7 are disc-shaped and connected to each other via a peripheral edge 8. The two hood parts 6, 7 limit together with the edge of the 8th a flat cylindrical cavity for receiving the pulley 2, the edge 8 may be part of a hood part 6, 7. It can also shell-shaped or dish-shaped hood parts 6, 7 may be provided, wherein the edges of the hood parts 6, 7 abut against each other. In Fig. 1 the cover 5 of the front pulley 2 is shown cut open, so that the view of the pulley 2 is released.

In jeder Abdeckhaube 5 sind zwei Haubenöffnungen für den Einlauf des Lastseils 3 auf die Seilrolle 2 und für dessen Ablauf von der Seilrolle 2 vorgesehen. Die Haubenöffnungen weisen in Umfangsrichtung der Seilrolle 2 bzw. der Abdeckhaube 5 gesehen eine Länge L auf, die einem Mehrfachen des Durchmessers des Lastseils 3 entspricht. Die Länge L ist erforderlich, da während des Betriebes des Seilzugs der Winkel zwischen den Trumen der Lastseile 3 variiert und sich somit der Ablaufpunkt des Lastseils 3 von der Seilrolle 2 ändert. Die Länge der Haubenöffnung kann bezogen auf den Umfang der Seilrolle 2 bzw. der Abdeckhaube 5 ca. 90° betragen. Die Haubenöffnung weist über die gesamte Länge L in Umfangsrichtung eine gleiche Breite auf, wobei die Haubenöffnung durch eine in Umfangsrichtung bereichsweise Unterberechung des Randes 8 der Abdeckhaube 5 gebildet wird. Die vorhandene Länge L der Haubenöffnung verhindert dabei, daß das Lastseil 3 an dem Rand 8 der Abdeckhaube 5 vorbeischleift und hierdurch Schaden nehmen kann. Dies ist insbesondere dann wichtig, wenn die Abdeckhauben 8 als Blechformteile ausgebildet sind.In each cover 5, two hood openings are provided for the inlet of the load rope 3 on the pulley 2 and for its expiry of the pulley 2. The hood openings have in the circumferential direction of the pulley 2 and the cover 5 seen a length L, which corresponds to a multiple of the diameter of the load cable 3. The length L is required, since during operation of the cable the angle between the runs of the load cables 3 varies and thus the flow point of the load cable 3 from the pulley 2 changes. The length of the hood opening can be about 90 ° relative to the circumference of the cable pulley 2 or the cover 5. The hood opening has over the entire length L in the circumferential direction an equal width, wherein the hood opening is formed by a circumferentially partially undercutting the edge 8 of the cover 5. The existing length L of the hood opening prevents it, that the load rope 3 at the edge 8 of the cover 5 vorbeischleift and thereby can take damage. This is particularly important when the covers 8 are formed as sheet metal parts.

Wie sich weiter aus Fig. 1 ergibt, weist die Unterflasche 1 relativ zu den Haubenöffnungen in Umfangsrichtung verschiebbar geführte Abdeckelemente 9 auf, wobei jedes Abdeckelement 9 eine Seilöffnung 10 für das Lastseil 3 aufweist und wobei die Seilöffnung 10 in dem Abdeckelement 9 kleiner als die Haubenöffnung in der Abdeckhaube 5 ist. Durch das Abdeckelement 9 wird die Größe der Haubenöffnungen auf die Größe der Seilöffnung 10 verringert, wodurch erfolgreich verhindert wird, daß eine Hand oder ein Finger des Bedieners von dem Lastseil 3 in die Haubenöffnung gezogen werden kann.How to get out Fig. 1 shows, the lower block 1 relative to the hood openings in the circumferential direction slidably guided cover elements 9, wherein each cover 9 has a cable opening 10 for the load cable 3 and wherein the cable opening 10 in the cover 9 is smaller than the hood opening in the cover 5. By the cover 9, the size of the hood openings is reduced to the size of the cable opening 10, thereby successfully preventing a hand or a finger of the operator from the load rope 3 can be pulled into the hood opening.

Wie sich insbesondere aus den Figuren 2 bis 4 ergibt, ist das Abdeckelement 9 streifenförmig ausgebildet und zwischen der Abdeckhaube 5 und der Seilrolle 2 in Umfangsrichtung der Seilrolle 2 verschiebbar angeordnet. Die Abdeckelemente 9 werden dabei frei von dem Lastseil 3 geführt bzw. in Umfangsrichtung verschoben. Dadurch ergibt sich ein einfacher konstruktiver Aufbau der Unterflasche 1 bei geringen Herstellungskosten und hohem Unfallschutz. Ein Verklemmen oder Verkanten des Abdeckelementes 9 an der Abdeckhaube 5 steht nicht zu befürchten. Da das Lastseil 3 durch die Seilöffnung 10 hindurchgeführt ist und somit das Abdeckelement 9 von dem Lastseil 3 geführt wird, ist die Verschiebung des Abdeckelementes 9 in Umfangsrichtung der Seilrolle 2 bestimmt durch die Lage des jeweiligen Ablauf bzw. Einlaufpunktes des Lastseiles 3 im Bereich einer Haubenöffnung. Dabei wird das Abdeckelement 9 bei maximaler Verschiebung in Umfangsrichtung zumindest im Bereich seiner Querränder 11 noch von dem Rand 8 der Abdeckhaube 5 überdeckt, so daß ein sicherer Verschluß der Haubenöffnung bei jedem möglichen Ablauf- bzw. Einlaufpunkt des Lastseiles 3 gewährleistet ist.As can be seen in particular from the FIGS. 2 to 4 shows, the cover 9 is strip-shaped and arranged between the cover 5 and the pulley 2 in the circumferential direction of the pulley 2 slidably. The cover elements 9 are guided free of the load cable 3 and moved in the circumferential direction. This results in a simple structural design of the lower block 1 with low production costs and high accident prevention. Jamming or tilting of the cover 9 on the cover 5 is not to be feared. Since the load cable 3 is passed through the cable opening 10 and thus the cover 9 is guided by the load cable 3, the displacement of the cover 9 in the circumferential direction of the pulley 2 is determined by the position of the respective run or inlet point of the load cable 3 in the region of a hood opening , In this case, the cover member 9 is still covered at maximum displacement in the circumferential direction, at least in the region of its transverse edges 11 of the edge 8 of the cover 5, so that a secure closure of the hood opening is guaranteed at each possible drain or inlet point of the load cable 3.

Wie in den Figuren 5 bis 7 dargestellt, kann das Abdeckelement 9 in Umfangsrichtung der Seilrolle 2 verschiebbar auf der Seilrolle 2 aufliegen. Das Abdeckelement 9 kann auf der der Seilrolle 2 zugewandten Innenseite 12 einen im Bereich der Mittellängsachse verlaufenden Führungsabschnitt 13 aufweisen, wobei der Führungsabschnitt 13 in den Rillenbereich 14 der Seilrolle 2 eingreift. Der Rillenbereich 14 der Seilrolle 2 wird begrenzt durch zwei Rillenschenkel 15, wobei der Führungsabschnitt 13 auf Innenflächen 16 von benachbarten Rillenschenkeln 15 der Seilrolle 2 verschiebbar geführt sein kann. Dies ist in Fig. 5 dargestellt. Der Führungsabschnitt 13 steht über die Längsränder 17 des Abdeckelementes 9 in Richtung zu dem Rillenbereich 14 über, wobei die Längsränder 17 nicht auf den Längskanten 18 der Rillenschenkel 15 aufliegen.As in the FIGS. 5 to 7 illustrated, the cover 9 can rest in the circumferential direction of the pulley 2 slidably on the pulley 2. The covering element 9 can have a guide section 13 extending in the region of the central longitudinal axis on the inner side 12 facing the cable pulley 2, wherein the guide section 13 engages in the groove region 14 of the cable pulley 2. The groove portion 14 of the pulley 2 is limited by two groove legs 15, wherein the guide portion 13 can be guided on inner surfaces 16 of adjacent groove legs 15 of the pulley 2 slidably. This is in Fig. 5 shown. The guide section 13 projects beyond the longitudinal edges 17 of the cover element 9 in the direction of the groove area 14, wherein the longitudinal edges 17 do not rest on the longitudinal edges 18 of the groove legs 15.

Bei der in Fig. 6 dargestellten Ausführungsform ist das Abdeckelement 9 wellenförmig ausgebildet mit im wesentlichen gleichbleibender Dicke. Hier wird der Führungsabschnitt 13 durch einen in den Rillenbereich 14 eingreifenden bogenförmigen Abschnitt des Abdeckelementes 9 gebildet, wobei das Abdeckelement 9 im Bereich des Führungsabschnitts 13 gegen die Innenflächen 16 der Rillenschenkel 15 anliegt und dadurch geführt ist. Die Längsränder 17 des Abdeckelementes 9 liegen wiederum nicht auf den Rillenschenkeln 15 auf.At the in Fig. 6 illustrated embodiment, the cover 9 is wave-shaped with substantially constant thickness. Here, the guide portion 13 is formed by an engaging in the groove portion 14 arcuate portion of the cover 9, wherein the cover 9 abuts in the region of the guide portion 13 against the inner surfaces 16 of the groove legs 15 and is guided. The longitudinal edges 17 of the cover 9 are again not on the groove legs 15.

Dem entgegen ist bei der in Fig. 7 dargestellten Ausführungsform vorgesehen, daß das Abdeckelement 9 einen ausgebauchten Führungsabschnitt 13 aufweist, der über die Längsränder 17 in Richtung zum Rillenbereich 14 übersteht und in den Rillenbereich 14 eingreift. Bei dieser Ausführungsform liegt das Abdeckelement 9 auf der Innenseite 12 zum einen bereichsweise mit den Längsrändern 17 auf den Längskanten 18 der Rillenschenkel 15 und zum anderen bereichsweise mit dem Führungsabschnitt 13 auf den Innenflächen 16 der Rillenschenkel 15 auf.The opposite is at the in Fig. 7 illustrated embodiment, that the cover 9 has a bulged guide portion 13 which projects beyond the longitudinal edges 17 in the direction of the groove portion 14 and engages in the groove portion 14. In this embodiment, the cover 9 is on the inner side 12 on the one hand with the longitudinal edges 17 on the longitudinal edges 18 of the groove legs 15 and the other partially with the guide portion 13 on the inner surfaces 16 of the groove legs 15.

Wie sich insbesondere aus den Figuren 2 bis 4 ergibt, weist das Abdeckelement 9 eine als Langloch ausgebildete Seilöffnung 10 für das Lastseil 3 auf. Die Seilöffnung 10 ist dabei im Bereich der Mittelquerachse X des Abdeckelementes 9 vorgesehen und teilt das Abdeckelement 9 in zwei Hälften, wobei jede Hälfte eine gleiche Länge aufweisen kann. Die Breite b der Seilöffnung 10 kann vorzugsweise dem 1,2 bis 2-fachen, insbesondere dem 1,5-fachen, des Durchmessers des Lastseiles 3 entsprechen. Dadurch werden die Reibungskräfte zwischen dem Lastseil 3 und dem Abdeckelement 9 bei der Bewegung des Lastseils 3 im Bereich der Seilöffnung 10 verringert, was zu einem geringeren Verschleiß des Lastseils 3 beiträgt.As can be seen in particular from the FIGS. 2 to 4 shows, the cover 9 has a trained as a slot rope opening 10 for the load cable 3. The cable opening 10 is provided in the region of the central transverse axis X of the cover 9 and divides the cover 9 in two halves, each half may have an equal length. The width b of the rope opening 10 may preferably correspond to 1.2 to 2 times, in particular 1.5 times, the diameter of the load rope 3. As a result, the frictional forces between the load cable 3 and the cover 9 are reduced in the movement of the load cable 3 in the region of the cable opening 10, which contributes to a lower wear of the load cable 3.

Gemäß Fig. 2 ist das Abdeckelement 9 mehrteilig ausgebildet, wobei eine Teilungsachse Y1 die Seilöffnung 10 schneidet. Bei der in Fig. 2 dargestellten Ausführungsform verläuft die Teilungsachse Y1 zwischen zwei streifenförmigen Abdeckteilen 20, 21, wobei die Abdeckteile 20, 21 an benachbarten Längsseiten 22, 23 lösbar miteinander verbindbar sind. Das Abdeckteil 21 weist quer zur Umfangsrichtung die Form eines U-förmigen und in Umfangsrichtung gebogenen Rahmens auf, in den sich das Abdeckteil 20 in Richtung der Mittelquerachse X des Abdeckelementes 9 einstecken läßt. Dadurch wird die Seilöffnung 10 gebildet. Die Zweiteilung des Abdeckelementes 9 in Längs- bzw. Umfangsrichtung ermöglicht den Ausbau der Seilrolle 2 bei eingeschertem Lastseil 3.According to Fig. 2 the cover member 9 is formed in several parts, wherein a dividing axis Y 1, the cable opening 10 intersects. At the in Fig. 2 illustrated embodiment, the pitch axis Y 1 extends between two strip-shaped cover members 20, 21, wherein the cover members 20, 21 on adjacent longitudinal sides 22, 23 are releasably connectable to each other. The cover member 21 has transversely to the circumferential direction in the form of a U-shaped and circumferentially curved frame into which the cover member 20 can be inserted in the direction of the central transverse axis X of the cover 9. As a result, the cable opening 10 is formed. The division of the cover 9 in the longitudinal or circumferential direction allows the removal of the pulley 2 with retracted load cable. 3

Bei der in Fig. 3 dargestellten Ausführungsform ist das Abdeckelement 9 einteilig ausgebildet. Hier kann das Abdeckelement 9 vorzugsweise aus einem elastischen Material, insbesondere aus Kunststoff, bestehen, so daß sich das Abdeckelement 9 bei der Montage an den Radius der Seilrolle 2 selbsttätig anpaßt. Im übrigen wird bei einem Abdeckelement 9 aus Kunststoff der Abrieb am Lastseil 3 verringert.At the in Fig. 3 illustrated embodiment, the cover 9 is integrally formed. Here, the cover 9 preferably made of an elastic material, in particular made of plastic, so that the cover 9 during assembly to the radius of the pulley 2 automatically adapts. Incidentally, the wear on the load rope 3 is reduced in a covering element 9 made of plastic.

In Fig. 4 ist eine weitere Ausführungsform eines Abdeckelementes 9 dargestellt, wobei das Abdeckelement 9 ein erstes Abdeckteil 24 mit einer sich in Umfangsrichtung von der Seilöffnung 10 bis zu einem Querrand 26 des ersten Abdeckteils 24 erstreckenden Längsausnehmung im Bereich der Mittellängsachse Y2 aufweist. Zum Verschließen der Längsausnehmung ist ein zweites Abdeckteil 25 vorgesehen, das sich über die Querränder 26 des ersten Abdeckteils 24 in Umfangsrichtung in die Längsausnehmung einschieben läßt. Das erste Abdeckteil 24 ist in Umfangsrichtung U-förmig ausgebildet und weist zwei sich in Umfangsrichtung erstreckende stegförmige und gebogene Randabschnitte 27 auf. Die Bandabschnitte 27 begrenzen die Längsausnehmung, wobei sich nach dem Trennen der beiden Abdeckteile 24, 25 das Lastseil 3 über die Längsausnehmung bis in den Bereich der Seilöffnung 10 einfädeln läßt. Anschließend wird dann das Abdeckelement 25 wieder mit dem Abdeckteil 24 verbunden, so daß das Lastseil 3 sicher in der Seilöffnung 10 geführt ist. Hier kann vorzugsweise eine Steckverbindung zwischen den beiden Abdeckteilen 24, 25 vorgesehen sein.In Fig. 4 a further embodiment of a cover 9 is shown, wherein the cover 9 has a first cover 24 with a circumferentially extending from the cable opening 10 to a transverse edge 26 of the first cover 24 longitudinal recess in the region of the central longitudinal axis Y 2 . For closing the longitudinal recess, a second cover member 25 is provided, which can be inserted over the transverse edges 26 of the first cover member 24 in the circumferential direction in the longitudinal recess. The first cover part 24 is U-shaped in the circumferential direction and has two web-shaped and curved edge sections 27 extending in the circumferential direction. The band sections 27 delimit the longitudinal recess, wherein after the separation of the two cover parts 24, 25, the load cable 3 can be threaded over the longitudinal recess into the region of the cable opening 10. Subsequently, the cover 25 is then reconnected to the cover 24, so that the load cable 3 is guided securely in the cable opening 10. Here, preferably, a plug connection between the two cover parts 24, 25 may be provided.

Claims (13)

  1. A block tackle, particularly a lower block (1) for cable pulls, comprising at least one rope pulley (2) surrounded by a cover (5) having cover orifices for a pulley rope (3), wherein at least one cover element (9) is provided in a manner guided in a sliding motion relative to a cover orifice, wherein the cover element (9) has a rope orifice (10) for the pulley rope (3), and wherein the rope orifice (10) is smaller in the cover element (9) than the cover orifice in the cover (5), characterized in that the cover element (9) is arranged below the cover orifice in a striped manner.
  2. The block tackle according to claim 1, characterized in that the cover element (9) is covered with a maximum displacement in the circumferential direction of the rope pulley (2) at least in the region of the lateral edges (11) of the cover element (9) by means of an edge (8) of the cover (5).
  3. The block tackle according to claims 1 or 2, characterized in that the cover element (9) rests on the rope pulley (2) in such manner that the same may be displaced in circumferential direction.
  4. The block tackle according to one of the previous claims, characterized in that the cover element (9) has a guide section (13) on the interior side (12) facing the rope pulley (2) extending in the region of the center longitudinal axis, wherein the guide section (13) projects beyond an edge region (17) of the cover element (9) and engages into the ridged region (14) of the rope pulley (2), and wherein the guide section (13) is guided in a displaceable manner on adjacent ridge arms (15) of the rope pulley (2).
  5. The block tackle according to one of the previous claims, characterized in that the cover orifice has a same width across the entire length (L) in circumferential direction, wherein the cover orifice is formed by interruptions in sections of the edge (8) of the cover (5) in circumferential direction.
  6. The block tackle according to one of the previous claims, characterized in that the cover element (9) comprises a rope orifice (10) for the pulley rope (3) that is essentially circular in shape.
  7. The block tackle according to one of the previous claims, characterized in that the rope orifice (10) is provided in the region of the center lateral axis (X) of the cover element (9).
  8. The block tackle according to one of the previous claims, characterized in that the width (b) of the rope orifice (10) corresponds to 1.2 to 2 times, particularly to 1.5 times the diameter of the pulley rope (3).
  9. The block tackle according to one of the previous claims, characterized in that the cover element (9) is embodied in multiple parts, wherein a divisional axis (Y1) intersects the rope orifice (10).
  10. The block tackle according to one of the previous claims, characterized in that the cover element (9) comprises two stripe-shaped cover parts (20, 21), wherein the cover parts (20, 21) are detachably connected to each other on adjacent longitudinal sides (22, 23).
  11. The block tackle according to one of the previous claims, characterized in that the cover element (9) comprises a first cover part (24) having a longitudinal recess extending from the rope orifice (10) to the lateral edge (26) of the first cover part (24) in the region of the center longitudinal axis (Y2), and that a second cover part (25) is provided for closing the longitudinal recess.
  12. The block tackle according to one of the previous claims, characterized in that the cover element (9) is embodied as a molded part from sheet metal, and is bent in accordance with the radius of the rope pulley (2).
  13. The block tackle according to one of the previous claims, characterized in that the cover element (9) consists of an elastic material, particularly of plastic.
EP09013573A 2008-11-26 2009-10-28 Block tackle Active EP2192075B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008059071A DE102008059071B3 (en) 2008-11-26 2008-11-26 A pulley block

Publications (2)

Publication Number Publication Date
EP2192075A1 EP2192075A1 (en) 2010-06-02
EP2192075B1 true EP2192075B1 (en) 2011-07-06

Family

ID=41719343

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09013573A Active EP2192075B1 (en) 2008-11-26 2009-10-28 Block tackle

Country Status (4)

Country Link
EP (1) EP2192075B1 (en)
AT (1) ATE515475T1 (en)
DE (1) DE102008059071B3 (en)
ES (1) ES2368601T3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015109900B4 (en) 2015-06-19 2017-05-04 Terex Mhps Gmbh Bottom block, in particular for cables, and method of mounting a cover element on the cable bottle
FI13061Y1 (en) * 2021-11-08 2021-11-25 Konecranes Global Oy Finger guard

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2728552A (en) * 1953-08-10 1955-12-27 Jr Jessee E Fate Traveling block guard and lock
DE3405759C2 (en) * 1984-02-17 1986-10-16 Willy Habegger AG, Thun Rope bottle
DE19602931C2 (en) * 1996-01-18 2001-04-26 Mannesmann Ag Bottom block
DE10311424B3 (en) * 2003-03-13 2004-12-02 Demag Cranes & Components Gmbh Rope bottle, in particular bottom block for cable pulls

Also Published As

Publication number Publication date
EP2192075A1 (en) 2010-06-02
ES2368601T3 (en) 2011-11-18
ATE515475T1 (en) 2011-07-15
DE102008059071B3 (en) 2010-04-29

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