DE2244585A1 - ARTICULATED BOOM FOR LIFTING AND TRANSPORTING LOADS, IN PARTICULAR FOR A CRANE - Google Patents

Description

PATENT Attorney D1PL.-INQ. JOACHIM STREET

645 HANAU RÖMERSTR. 1 »· POST BOX 793 · TEL.IW03 · TELEQKAMME: HANAUPATENT · TELEX: 418478t p.l

GALLAY SA _{n #} September 1972 JOU LES TOURS (Indro et Loire) Str / Ad - 10 France

Empty the articulated boom for lifting and transport of loads, especially for a crane.

The invention relates to a boom for a lifting machine, for example a crane or the like. This boom consists of two elements that are hinged to each other. A boom tip is located on a boom foot, with the loads can be handled with the free end of the jib tip and a load lifting device located therein.

Such articulated articulated booms are known. Meanwhile are the possibilities for work and use of these machines are limited. They are also expensive to build and complicated. Most of these devices have a first cable drum for operating the boom foot and a second drum for controlling the boom tip inclination on.

OeI of the present invention are intended to avoid this disadvantage

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ORIGINAL INSPECTED

which are created by using a hinged articulated boom which can be controlled in a particularly simple way, whereby he offers new work options.

An articulated jib beam of the invention has a lower fixed Axis around which a first carrier, which forms the boom foot, is articulated, whereas on its opposite one End of the lower part of a second beam, which is the boom tip forms, is hinged. A winch attached to a fixed support is attached to the free end of the rope by a rope Boom tip connected to control the inclination changes to be able to. This type of boom is used in accordance with the invention designed so that a ski ingo of constant length with a End at the tip of the boom foot and with the other end Is attached to a fixed point, while stops between Boom foot and boom tip are provided around this To connect in a predetermined raised position, as well as that with the help of a single winch with the boom foot alignable boom tip is moved in the area that lies outside the stop position while with the same Winch the whole formed by the boom tip and boom foot rigid unit is moved when the boom tip is the aforementioned Ansth I agste I I ung has reached. The main advantage is that a second winch can be omitted. In addition, the cantilever foot can be designed as a hollow beam and can thereby the pulley block can be laid inside the hollow beam *

Another advantage is that in different versions elnstel the articulation angle between the two boom parts Iber Ut.

Further details, feature ο and Vortolle result from the following description of the drawing examples.

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Show it:

Flg. 1 shows a schematic overall view of a crane with Articulated boom according to the invention in a working position,

Fig. 2, 3 and 4 several successive installation phases,

FIGS. 5 and 6 show a modified embodiment with an interior Pulley,

7 and 8 a further modified embodiment

form with pulleys and inner stops and

FIGS. 9 and 10 show a different setting of the embodiment from FIGS. 7 and 0.

In the FIg. 1 to 4 If a crane with an articulated boom is shown, the example is mounted on a platform 1 of a vehicle Is. Around a horizontal axis 2 above the platform 1, the base of a hollow beam 3 is hinged, which the Boom foot forms. At the top of this boom 3 is an axis 4 is provided, on which the lower end of a further carrier 5 is articulated, which the jib tip there «- represents. At your free end is the boom tip 5 with a hoist rope 6 for handling the loads 7 is provided.

A strut 0 is hinged on the axis 4. Furthermore Is a rope 9, which is hinged on one end 10 of the Strut 8 is anchored, connected to a control drum 12, which is firmly anchored on the platform 1. In the way of the Rope 9 can be turned on a pulley block 13 to a To achieve reduction.

Finally, there is a rope or loop 14 of constant length with one end on axis A and 11 the other end

-A-

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- 4 fixed at a fixed point 15 on platform 1.

Behind the axle 4 is on the tip of the boom foot 3 a stop surface 16 and on the lower part of the mast tip 5 a further stop surface 17 is provided.

With the crane one works in the following catfish:

If the boom foot 3 is inclined sufficiently forward during construction Is and the position of Flg. 3 has reached, then tense the loop 14 and it becomes clear that by further unwinding the winch 12 and the rope 9 running off, the boom foot is not lowered any further but held by the loop 14 and that only the top of the mast 5 (in the direction of the arrow 18) lowers, for example to adjust the position of the wings. 1 or 4 to take. As a result, a load 7 In can be relatively be handled far away from the platform 1 of the vehicle, for example above a building 19, during his Creation.

If, on the other hand, starting from the limit position according to FIG. 3, the winch 12 runs in reverse and winds the rope 9 (arrow 20), this has the effect that at the same time the boom 3 and the Boom tip 5 (arrow 21) must be raised. The two elements 3 and 5 are then on the surfaces 16 and 17 against each other At the ready and act like one rigid boom. The lifting takes place with simultaneous relaxation of the loop 14.

It is known that a block and tackle like the block and tackle 13 in the present example a relatively sensitive unit Is. The present invention now offers a possibility To protect him. For this is. In accordance with the modification according to the FIg. 5 and 6, the rope 9 put around pulleys and 23, which lead it down to the boom foot 3, In its interior os up to a first set of free roles 24

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runs up. This lower set 24 is part of the pulley system 13, which also has an upper set of rollers 25, whose axis is fixed to a fixed support inside the boom 3 and at its tip. On the other Side of pulley set 25 is the rope with the drum of the Winch 12 connected.

It can be seen that this modification works in the same way works like the previously described embodiment, with the difference is that the pulley block 13 is protected inside of AusTegerfußes 3 (Flg. 6) is working. The lower set of rollers moves in the direction of the jib foot axis (arrow 26) or In the opposite direction.

In the Flg. 7 to 10 a further embodiment is shown, in which the pulley system 13 is also moved into the interior of the boom foot 3. The two sets of roles are here to help of the pulley system 13, that is to say the lower roller set 24 and an upper roller set 27, are freely movable. The axis of the upper Roller set 27 serves as an anchoring point for the sling with constant length, which is also at the fixed point 15 on the Platform is set. A roller 28 guides the loop to the upper part of the boom 3 such that the tension the loop 14 brings the tube set 27 to an upright position (Arrow 29). The amplitude of this movement is by a fixed one Stop 30, which is firmly connected to the boom 3, is limited.

In addition, a fixed one is adjustable in its pitch Stop 31 between the two sets of rollers 24 and 27 is provided in such a way that it acts as a stop for the lower Set 24 is used when it is raised.

Finally, the whole device is designed so that, to Pulling the upper set 27 downwards wonn the golden roller sets 24 and 27 are attached, a greater force is required, is necessary than to divide the lower set 24 downwards.

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hen, in the event that the winch 12 to the Loosening the rope is operated.

Finally, in this case it should be noted that the joint axis 4 of the boom 3 and the boom tip 5 before. Arranged in the middle or behind these two elements without the need for stop surfaces 16 and 17,

The device works as follows:

If, based on the position In Flg. 7 (only the upper sentence 27 is in the stop), the winch 12 is operated to loosening the rope, it becomes clear that only the lower Roller set 24 lowers (arrow 32), although the boom tip 5 also lowers (arrow 33). The upper sentence 27 and the Cantilever foot 3 remain unmoved at this tent.

If, on the other hand, the winch 12 is acted on, a train exerting on the rope, the lower set 24 becomes the Caused to climb until it is supported on the stop 31. In this position, the boom foot 3 and the boom tip 5 form an angle 34 which remains unchanged if it changes About the winch 12 is pulled on the rope. In fact remains Beyond this position the lower set 24 remains stationary and the upper set 27 descends (arrow 35), while doing the simultaneous lifting of the non-deformable from now on Unit of boom tip 5 and boom 3 causes the limit the fixed angle 34 between them.

It is clear that this fixed angle 34 by simple Moving the adjustable stop 31 can be set to any desired value. In the Flg. 9 and 10 is For example, a setting is shown with which it is possible to arrive at the same result as in the case of Fig. 1 to 4, i.e., if the boom tip 5 and the boom

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gerfuß 3. are fixed with each other (the lower set 24 is supported against its stop 31), the boom tip 5 is in the extension of the boom foot 3 (angle 34 «180 °).

Expectations :

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Claims (1)

Expectations K Articulated boom for lifting and transporting Loads, especially for a crane, with a lower one horizontal axis around which a first Tröger, the forms a boom, is articulated, while at its opposite end the lower part of a second Is hinged to the beam that forms the boom tip, Furniture through a winch attached to a fixed support «Connected in rope to the free end of the jib tip is in order to be able to control the changes in the position, characterized in that a loop (14) with a constant lung at one end the tip of the boom foot (3) and the other end is attached to a fixed point (13), while stops (16, 17) are provided between boom foot (3) and boom tip (5) in order to raise them in a predetermined manner To connect position, and that with the help of a single winch (12) with the boom foot (3) can be aligned Boom tip (5) is moved in the area that lies outside of the stop, while with the same Winch (1?) The whole of the jib tip (5) and jib foot (3) formed rigid unit is moved when the Aus Iogerspitze reaches the aforementioned stop position Has. 2. Articulated boom according to claim 1, characterized in that that the upper end of the Schi Inge (14) set directly at the upper end of the legerfuss (3) is. 3. articulated boom according to claims 1 and 2, characterized gekennze i chnot, DAC dan control (9) with or without pulley (13) lujcntromme I from the .71 of dl- 309812/0885 Is connected straight to the free end of an alignable strut (8) and thereby forms a non-deformable triangle that tilts with a cable pull (9) and the free end of the boom tip (5), the alignable strut (3) in the zone of the Articulation point of the two extension elements (3, 5) is articulated and the stops consist of support shoulders (16, 17), one of which is arranged at the tip of the jib foot (3 ·) and the other at the bottom of the jib tip (5) Is. Articulated jib according to one or more of the preceding claims, characterized in that the winch (12), the fastening point (15) for the loop (14), the _{alignable strut (Q) and} support heels (16, 17) behind the Articulation axis (4) are arranged between the Iegerspltze (5) and the boom foot (3). Articulated boom according to one or more of the foregoing Claims, characterized in that the control unit I (9), which is the drum of the winch (12) with the adjustable strut - (8) and the free one The end of the boom tip (5) connects with a reduction pulley (13) is provided, which is completely inside the Aus Iegorfußes (3). Articulated boom according to claim 5, characterized in that that the pulley block (13) has a first set of rollers (25) which is attached to the upper part of the From the foot and inside it is fixed ", has, while a second movable roller set (24) In the lower part of dos Aus I e-gorf ufios advances and I ri those Toil do "; Get going (9) which goes to hinged strobe (0) and leads to Aus I erjorsp 1 tze. - 10 - 309812/0885 22U585 .- 10 - 7. Articulated boom according to one or more of the preceding claims 1 to 5, characterized in that the lower part of the pulley block (13) in the boom foot (3) with a first fixed but adjustable stop (31), because inside this boom foot ( 3) is arranged between the two sets of rollers (24, 27), both of which are movable, while a second fixed stop (30) is provided above the upper set of rollers (27) and as an anchoring point for one end of the loop (14) of constant length, which is routed via rollers (2B) to the other fixed anchorage point CI5) at the base of the crane. 8. Articulated boom according to claim 7, characterized in that that on the Scholtel between the boom foot (3) and the lower part of the legorsp 1 tzo (5) a free joint without stops is provided. 9. Articulated boom according to claims 7 and H, characterized marked, the device so designed 1st, that by the action of the single winch (12) on the rope (9) of the lower pulley (24) first moves while the upper pulley (27) is in the stop remains, while the upper pulley block only begins to lower when the lower pulley block (24) has come to a stop, with dds simultaneous lifts the boom foot (3) and the boom tip (5) causes will. 10. Articulated boom according to claim 1, characterized in that dal} the constant Läncjo Loop (14) according to the desired opinion of the Auslotjerfußes (3) is adjustable. 309812/0885 Blank page