DE2721268A1 - METHOD AND DEVICE FOR BUILDING THE MASTER OF A TOWER CRANE, IN PARTICULAR A CRANE OF HIGH PERFORMANCE - Google Patents

Description

PATENT Attorney DIPL.-INQ. JOACHIM STRASSt

»45 HANAU ROMERSTR. 19 POST BOX 7W TEL (061M) Ϊ0803 / ϊη7 40 TELEGRAMS: HANAUPATENT. TELEX:

POTAIN S.A. 2721268

(1 1 533) A.

Method and device for erecting the mast of a tower crane, in particular of a crane large Lp i s t uno ^ t ii h i gke i t

Devices are known that have a sliding cage included to mast elements a :. To erect the crane. An outer cage is moved outside on the mast of the crane. The ones to be assembled Elements are inserted through an open face of the cage. This open face, d. H. they don't is provided with cross braces, represents a weaker zone of the cage and specifies a direction of construction for the introduction of the elements. Other devices include one Cage inside the mast; those to be arranged one above the other Items are then attached to the sliding cage its upper part arranged. In any case, the Do not dismantle the cage, it remains inside and on the Top of the mast, where there is an area exposed to the wind and a represents substantial dead load.

The two types of cages have other disadvantages in common: the length of the cage contributes to the length of the mast elements; Everyone Mast elements must have guide means and mounting stops attached to the tower columns and spaced a distance equal to that Stroke of the lifting device.

These disadvantages increase the greater the number of elements to be arranged one above the other and the greater the dimensions each element increases. So is z. B. the assembly of a tower crane with the help of known devices is not recommended, if the mast elements have a square cross-section of Have a side length of 4 meters and a height of 6 meters and weigh about 5 to 6 tons. It would then be a cage

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of at least 12 meters is required, and it should be certain Parts of the tower are oversized for that reason alone to absorb loads occurring during assembly, while these loads (torsion ...) during the drive time of the Crane does not exist bind.

The object of the invention is to avoid the disadvantages and specify a device for the assembly of a tower crane that can be completely dismantled and all auxiliary equipment for heaving up, in order to build a completely to get free crane. The invention also relates to a Procedure that aims "during the" exit (Te Ieskopierens) "not to place abnormal loads on the mast. The invention therefore particularly relates to assembly of very high efficiency cranes.

According to the invention a method of assembly or construction a tower crane specified, in which the mast elements by means of a lifting device and by means of an inner extendable Masts are stacked and assembled, with the method according to the invention is characterized by:

the lifting of the inner mast or slider with the help of the lifting devices, all of which can be dismantled Cage to be worn;

raising the cage to the top of the tower formed by the mast over which the slider rises;

bringing in the various not yet assembled Parts forming a mast element between the mast top and the base of the cage;

stapling these parts together above the point of the mast and around the slider, and the lock the extracted element at the top of the mast;

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attaching the base of the lifting cage to the this way raised the mast top to the cycle start over and install a new element.

Although a cage or hoist is used, the has all the facilities for assembly, this cage plays not directly the role of an extension element; after the end of the mast structure, the cage can be dismantled and with all be brought down with its own lifting and guiding means, such that the mast is in the working position of all of these Sharing is free and easy with minimal wind resistance offers.

According to another inventive feature, the lifting of heavy parts through a system of rungs, sliding pieces and Openings for stapling and taking over avoided, with the positioning of the axes locking or sliding of the lifting cage or the sliding piece, the latter is moved under the action of lifting equipment, as well as the cage is handled by means of the lifting load cable of the crane boom, assembled, lifted and finally dismantled.

A Te I eskopiervorrichtung according to the invention for stocking up a tower crane by attaching additional mast elements is particularly suitable for the assembly of very large cranes Efficiency. This device contains a lifting device, which is carried by a telescopic cage that has the same quei— cut how the mast has at the tower base, this cage is arranged above the mast and an inner mast or slider surrounds. This device is characterized in that all mounting devices are firmly connected to the cage, while they cooperate with the struts or spars of the slider arranged support means, the base plate of the slider fixed parts or "sliding elements" carried at the end of the

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Structure are attached to fastening means, so-called "flaps or rungs", which are located between the struts or spars of the slider and those of the cage and the outer mast, these flaps or rungs being demountable and either with the cage or with the unit of slider and masts are firmly connected, and that the relative displacements of the cage and the slider by means such as ζ. B. rollers or sliding blocks are performed, which are connected to the cage test and along the columns of the slider cn II, itiyg I ei th, whose base plate can be locked on the tip of the outer M.isten we rden.

According to a further embodiment of the invention is the Cage made of at least two completely removable grids or lattice work. These grids are interconnected and form a structure that allows facilities to Extending the slide, lower and upper guide means, Be a fastening and recording system for those to be topped up Mast elements, and means for stapling the element and the cage that sits on top of the mast is located.

This cage consists z. B. from two latticework in U-shape or made of four L-shaped elbows or two-planes, with the The apex of each L corresponds to one of the struts or spars of the cage.

According to a further preferred embodiment of the invention the lifting devices contain at least two winches that are operated by Cage are supported and symmetrical with respect to the axis of the crane are arranged and are supported directly on the spars or struts of the outer mast. These winches are between the outside space of the slider and the interior of the cage arranged on the base plate of the cage in order to create a vertical reaction in the

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To transfer struts or bars of the outer mast, so that no torsional loads, bending loads or abnormal See rbe Iastun is exposed gene during the construction of the masts. The upper outer edge of each winch is provided with a locking shoe provided with Profi I, which engages in the form of a pawl under the test supports on the struts of the slider, these supports forming a ratchet , which also works with double levers ζ us ammeη that work on the cage are arranged, and represent release elements between two winch barrels.

According to a further embodiment of the invention , the height of the cage is as small as possible, the minimum value being defined by the length which is required in order to obtain correct guidance of the slider by the upper and lower rollers (or sliding blocks).

According to a further embodiment of the invention, the slider (or the inner mast that slides above) has a height that is at least equal to the sum of the heights of the cage and a standard ma stele meter, the slider relative to the cage locked at the top of the mast can move up a distance equal to the length of a mast element to be attached.

According to a further A r ungsfοrm usfüh the invention, the base plate of the slider is provided with a horizontal Doppe Iquerverbindung illustrating a mounting cross between the struts whose lower region is provided with a retractable locking device which serves to provide a firm connection between the slider and the mast while the cage rises again, during the assembly of the elements and while the elements are being attached.

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Contained in accordance with a further embodiment of the invention the locking and stapling devices at the level of each strut or bar:

a "flap or rung" which includes: an upper horizontal plate for attachment to the base of the cage; a diagonally aligned rod slotted on the portion enclosed by the outer spar and the spar of the inner slide, a centering tif1 ₁ to center the flap or cage with respect to the spar of the outer mast; a vertical hood extending over the height of the hinged cover; horizontal brackets branching off from one and the other part of the spar of the slider; a sheet which is arranged in a vertical plane which is substantially perpendicular to the plane of the hood, the sheet being provided with openings for tab connections;

one diagonally on the base plate and one on the outer surface of the spar of the slider attached sliding element, the is provided with stapling openings above the flap cover;

a pawl that is under the cross of the slider below Interposition of a free axis of rotation is arranged, whereby ■ it is made possible that the loads are automatically transferred to the two bolts of the pawl, the Latches engage in seats that are in the tabs of the spars of the elements of the outer mast below the tab openings the elements are provided;

Angle plates that are attached to the slide and with the angles of the - "flaps" work together;

a fixing plate attached to the base of the cage of the cage and the plates, all of these parts being provided are used to attach fasteners to detachable stapling or

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mounting means (axles, pins, screws ...) .

The locking devices and fixing devices mentioned are explained in detail below. Be on it pointed out that this explanation does not limit the subject matter of the application. Any fastening devices are in the Scope of the invention that allow the mast at the end The extension is held alone, being ensured must be that excellent strength and manageability are guaranteed during operation.

According to further features of the invention:

owns the top edge of each mast element to be added in all striving a form that corresponds to the Centering pin of the flap can work together, and it has two diagonal ribs that attach to the strut are fixed, and are arranged at a distance, which is a slide rail for the vertical slide iron and represent the return of the flap;

the telescopic cage consists of around the slider arranged two identical latticework in a U-Cross section, which are attached to each other of axles are coupled into the upper and lower cross pieces, whereby it is sufficient at the end of the assembly, just pull out the two upper axles and the two lower axles to close the cage dismantle and use the crane's lifting cable to connect it to all lifting and guiding devices that the Has cage and which can be dismantled into parts bring back the earth;

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At the end of the construction, the crane mast consists of mast elements that are placed one on top of the other and with each other are attached, with the top edge of the top member in a fixed manner to the base plate of the slider is connected, which then represents the upper part of the crane pillar or mast, the only the mast, the flaps and the sliding piece; it should be noted that the other parts, under among other things, also the guide facilities while the base of the slider is over the top of the erected mast.

According to a further embodiment of the invention contains the base plate of the telescopic cage has a fastening system for the mast elements, which are in several parts around the slider be built around, the fastening system z. B. of the monorail type, and wherein the attachment the grid, as well as raising the cage to the height of the locked slide on the top of the last mast element via the monorail system, this System implemented using a double load cable line will.

According to a further embodiment of the invention are only two or four struts or spars of the slider with support means for the Hemmglieder of the winch and for the on The outer edges of the double levers or pawls arranged on the cage are provided, the standard elements which can be stacked on top of one another of the mast then do not contain any guide or lifting elements.

According to a further embodiment of the invention, the remain removable flaps through their top plate as long as the structure of the mast is attached to the cage until it is releasably attached to the top of the last mast element

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and / or can be attached to the angle sheets of the slider. While the tower is being erected, the flaps are detached from the cage and fastened between the raised outer masts and the upper slider in order to create transmission links for the workloads, while the slider extends the crane from Ienker to the mast, which is constructed from elements arranged one above the other wearing. It should be noted that the flaps represent heavy parts that do not have to be raised according to an embodiment of the invention except for their attachment or the retraction of the axes.

Further details, features and advantages of the invention emerge from the following description of the drawing.

Show it:

1 shows a crane according to the invention before the assembly and the addition of the tower;

FIg. 2 shows a schematic dismantling of the telescopic cage, the lifting devices and the devices for lifting the tower;

3 shows the raised crane column after the auxiliary equipment has been dismantled;

4 shows a center section through the lifting devices;

Figure 5 is a view along lines V-V (Figure 4)

the cage and the guide devices of the slider;

6 shows the support structure of a cage which can be domed;

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7 shows the upper assembly zone of the cage, in a perspective view;

8 shows the individual in the lower assembly zone;

9 schematically, from above, the structure of a

Cage =; made up of two U-shaped latticework

consists;

Fig. 10 is a perspective, unfolded

Representation of the connections between the slider and the mast tip and the telescopic cage that can be made by attaching and detachable screw elements. These connections are secured in every corner of the tower by a removable flap;

11 is an enlarged view of the outer regions

a stiffening cross attached to the base of the slider;

Fig. 12 shows a connecting axis of a releasable pawl which is arranged under the slider;

FIG. 13 is a pawl with two bars which are connected through the axis of Figure 12 with the base plate of the slider;

Figure 14 is a front view of the latch of Figure 13;

FIG. 15 is a specific section along the lines XV-XV (of Figure 4) at the level of a guide and He f TKI appe;

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Fig. 16 is a partial section along the lines

XVI-XVI (according to Fig. 4) at the level of a releasable locking bolt;

17 vertical cross-sections through the device, show the phases of construction of the inner slide;

21 shows the assembly of the latticework of one to be aligned Mast element, lifting the unit of the cage and latticework on the top of the sliding piece and the heightening of the mast by assembling the latticework around the slider.

The invention relates essentially to lifting or telescopic extension of a tower crane 1 with a boom distributor 2. The device is from an original position described from, which is shown in FIG. Tower 3 is at its minimum height. He is in the vertical Position above the ground 4. The erection of the tower and the Boom from the horizontal transport position is z. B. by means of an auxiliary machine 5 or another known one Established.

The tower 3 includes an outer mast 7 carried by the base 4, it includes a sliding inner mast 6, hereinafter referred to as the "slider". This slider carries at its tip a pivot 8, a Orientation device 9 and the cabin (not shown) of the tower crane 1. In Fig. 1, the lifting devices of the Mastes schematically through its support structure or the cage 10 shown, the z. B. consists of two latticework 10 a and 10 b in a U-shape. This cage is easy to use by means of the

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Load hook of the crane demontierbdr. When the erection of the outer mast 7 has been completed, all assembly and guide devices have been removed from the tower crane, and the tower crane then has that in F i <_). 3 appearance shown. The tower consists solely of the outer mast 7, which telescopically extended by adding aufeinanderset ζ cash elements, by the way up over the head de ^1, masts slide 6 and by a system of fixed and removable connections 11, is erected 12, wherein the Connections connect the base of the slider to the top of the last element 13 of the mast 7.

In Fig. 4 is an embodiment for the telescopic Displacement of the mast 7 shown in detail. The cage 10 above the mast 7 carries in two of its lower opposing angles of attachment and articulation points two hydraulic winches 14 and 15, each surrounded by two double levers 16 and 17 with a swivel seat are. The winches and the DoppelhotuH are between the struts of the outer cage and the struts of the slider 6, the latter being regular on their outer surface spaced support means 18 included. At the outer end of the rod of each winch there is a retarding member 19. The Hemmgl ied 19 and the outer end of each arm of the double lever 16 are profiled so that they are automatically snap onto the supports 18 of the struts 26 of the slider. These support elements 18 have z. B. the shape of a after stepped down hook, which is an upward (deflector 20) displacement of the slider 6 with respect to the Allow cage 10.

The cage 10 also includes upper and lower cross braces and 22 which have castors attached to them that rotate along the struts of the slider. When the striving is a

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have a round cross-section, the upper rollers 23 and the lower rollers 24 are arranged in pairs and opposite one another. These are then bevel gears (FIGS. 4 and 5).

FIGS. 6 to 9 show the structure of the cage 10. The cage is shaped U-by two to the slider 6 around arranged gridworks 10a and 10b realized (Fig. 9), each lattice in one of its angles a fastening point 25 for a Has windlass. The two Grundtei Ie of the cage are at their upper cross members 21a and 21b and at their lower cross members 22a and 22b by means of axles 28 and 29 mi te i nanderjve rkop pe I t, which are arranged in corresponding seats (Fig. 7 and 8 ). This results in a structure corresponding to the arrangement according to FIG. 6. The struts 27 of the cage and 30 of the outer mast define the same cross-sections (Fig. 9). It should be noted that the dismantling of the cage 10 is easily feasible by means of the crane hook : it is sufficient to remove the stapling axes, the fixing of the flaps and part of the rollers.

The crossings or struts of the grid are not limited to those shown in FIG. In the same way, the cage can be formed by four elbows or two-sided pieces and carry a winch and a double lever at all of its lower angles. The structure and strength of the telescopic device are a function of the weight and dimensions of the mast elements.

Be the fastening tabs and releasable locking devices between the elements of the mast, the telescopic cage and the slider are shown in detail in FIGS . An important part of each connection is represented by a removable flap 11, there being a flap for each strut of the mast. The flap contains:

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a horizontal support bar 31 oriented diagonally to the mastwork;

- a hood 32 formed by two vertical iron sheets (or by one slotted over part of its size Iron sheet) is formed, the iron sheets running diagonally and provided, to run between the outer strut 30 and the inner strut 26 of the slider;

- A vertical plate 33, which is essentially perpendicular to the hood 32 and extends to below the rod 31 first stretches;

- Two angle plates 34 and 34a, which are attached to the rod 31 and are oriented so that they are with the open one and the other part past the strut of the slider;

an upper horizontal plate 36 containing vertical openings 37 for screws for fastening to the cage to record.

The flap 11 (Fig. 10) is at the top of a mast element centered with the help of a centering pin 38 in the outer Area of the strut 30 is provided in order to be received in a seat 35 of the rod 31. After all, all of them are pro files the flap with openings to attach fasteners to be able to. The flap can be connected to:

- A mast element, with pins in tabs connecting openings 39, which are provided in ribs or tabs that are diagonally attached to the outer Areas of each strut 30 are attached, with the lower end of the plate 33 between the two lugs slides until openings 42 coincide with openings 39; 70 98 A 7/1 05 7 -23-

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- The slider 6, in which the cap 32, which at

43 is pinned to a sliding element 44 which is connected to the base of the strut 26 and extends horizontally at 45, whereby this He f t ve r b i η d un g the slide is deprived of its movement and after the telescopic extension, during the Work of the crane, connect to the top of the outer mast ensures;

- The base of the cage 10, with screws fastened in the openings 37 of the plate 36 and the plate 37 a that is stuck on the Käfiy (Fig. 10).

It has already been shown above that the tower only contains the sliding piece, the mast and a system for fixed connection 11, 12 after the telescopic extension . In addition, it has already been pointed out that the device according to the invention is used in particular for cranes with very high capacities (e.g. for lifting loads of 15 tons with a radius of 70 meters).

After the cage has run down there is a transfer the loads from the upper slider to the lower mast part I with the largest cross-section and a connection between these two parts ensured by:

1). the multiple (z. B. triple) stitching connec tion between sliding element 44 and cap 32 of the flap (HörizontaI axis 30, Fig. 15);

2). the tab connection of the flap 11 on the top of the outer mastwork (axes 51 and 52 Fig. 15);

3). the stitching connection of the angle plates 34 and 34a with the analog profiles 46 and 46 a of the slider. These connections on the vertical

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Axes 43 and 4 4 (Fig. 15) take the torsional forces on whom the mastworks while working is exposed;

4). a complementary lock with two bolts directly connects a cross piece of the base plate of the slider with the mast. This lock is shown in FIG. 16, while the latches are shown in detail in FIGS. 11-14.

Under the cross-shaped cross brace 12 (Fig. 4 and 5) are Vertical sheets 47 attached, which are intended to be a take up horizontal axle bearing 48 (Figs. 11 and 12). A bolt 49 contains a frame 55, which is by means of central Bores 56 and 56a on the axis 48 can be attached. The latch is also provided with two slide pins 57 and 58 Mistake. Since the struts of the slider are retractable backwards, they are with respect to the struts of the mast free. In the starting position, the pins engage in the tabs 40 and 41, so that the cross bracing of the slider is fixed to the top of the mast by the pins and the axle 58 connected (Figs. 13, 14 and 16).

The various phases of the tower construction are shown in FIG. 17 to 25 shown. This sequence of figures shows the following work steps:

a) the cage 10 is built around the slider and attached the top of the base mast (Fig. 1) or the last existing element (Fig. 17) locked.

b) The flaps 11 are screwed under the cage 10. This leased line will be used during the entire lifting operation no longer removed. It should be noted that

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a flap is placed at the level of each strut of the structures . In this way there are four units of connection and retractable slide element. Struts 26, 27, 30 with a cylindrical cross section are shown. However, this shape is not intended to limit the subject matter of the invention, and rectangular tubes, L-shaped angles, etc. can also be used. In the initial position (FIG. 17) the winch 14 is retracted. The inhibiting member 19 engages under the upper support member 18 of the slider 6 , which is attached to the mast le me nt 7 by means of the bolt 49. It should be noted that the same structure is implemented at all four angles of the mastwork (as regards the locking) and at at least two angles as regards the winches and the support members . The structure is identical for all angles, although the method of operation is described, whereby only one group of the fixed lift, staple and return connection is examined.

c) The double lever 16 (FIG. 4) is released, which can then snap into place under a support member 18 in order to support the slide 6. The pin 57 of the latch 5Q is retracted while the winch 14 is activated. As a result of the interlocking between the support member 18 and the inhibiting member 19, the slider 6 (arrow 20) is raised by a height which is equal to the distance between two successive support members 18. In the course of this displacement , the slider is guided by the upper rollers 23 and the lower rollers 24 of the cage. The double lever 16 on the fixed cage moves away from the strut 26 under the action of the shape of the support members 18. At the end

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the winch moves sit; · back under a lower-lying support member. In this way, as can be seen from FIG. 18, the slide piece b is held in an upper position by the top I lifts.

d) It is then possible to retract the winch rod and the outer inhibiting member 19 under the second supporting member of the slider to ra; -ten, i.e. through the rollers 23 and 24 is guided and held by the double lever 16 will. The bolt 49 remains retracted and the cage 10 remains locked at the top of the mast 7. In this way, periods of time are realized in which the slider is raised; This is required to make the inner mast relative to the outer Mast 7 to be raised. This sequence consists e.g. B. from four winch runs, as in Figs. 18, 19, 20 and is shown. After the fourth sound the slider was raised to a height 60 equal to the height of a piece of mast to be erected. (Fig. 21).

e) The lower end of the cage 10 contains a suspension system, e.g. B. a monorail 65, 65a (Fig. 9). Under this monorail, the unassembled Fixed latticework that will form a mast element. Because each of these latticework is very heavy it is done by means of the crane hook of the crane from Ienker handled, the hoisting rope of which is guided in a pulley block, as shown in FIG. One can access this Way part of the additional element 61 to below bring the counterpart during the second part symmetrically below the Deflector is brought (Figs. 21 and 22).

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f) After the slider 6 has been raised by a height 60 (FIG. 21), the stitching connector is pulled back, the flaps 11 the cage with the mastwork along the axes 51 and 52 (Fig. 15) after locking the slider to the top of the mastwork (Figures 16 and 23). Then you pull the winches 14 and the back I to lift I 16 according to the arrow 62 (Fig. 23). The cage and the flaps will be linked together and free to slide with respect to the slider and mast assembly, the elements of which are connected to one another by means of the bolt 49. The cage 10 is then in Raised towards the top of the slider. This shift is made by means of a lifting system of the crane or with other devices (e.g. with the winches). The cage is supported by rollers 23 and 24 (Figs. 22 and 23) or by guide jaws guided.

g) The parts raised in this way are held by means of a connection with the slider (tack connection, hook or the like). The two parts 61 a and 61 b of the mast element 61 can then be uncoupled, which is then also decoupled Using the upper openings 39 of the tabs 40 and at the top of the outer mast by means of a Tab connection is attached.

h) The cage 10 is tacked onto the new upper edge obtained. You return to the starting position 17 when the lifting means are released and when the slider is removed from the struts of the Mast is released (the pins of the bolt 49 are from the lower openings 41 a and 41 b of the tab 41 pulled) (see. Figs. 13, 14 and 16). The device is then ready for a new assembly cycle (Figures 24 and 25).

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When the Fitjur 25 is ready to assemble the last mast element represents, so it remains only, the slide 6 telescopic extend (Fig. 21), the flaps 11 over the sliding elements 44, and to screw the angle plates 34 onto the angle plates 46. After the screws for fastening of the cage on the flaps have been taken away, the cage and part of its rollers are dismantled in order with all his parts down to the ground bring.

As you know, this step is relatively easy. It is enough that To dismantle the cage that the assembly axles (two or four axes 28 and two or four axes 29, FIGS. 7 and 8) are removed, and that the elementary basic latticework obtained be attached to the crane hook, and that these parts are lowered. The crane column then consists solely of the stacked mast elements 7, from the upper slide 6 and the flaps of the fixed connection 11.

It should be noted that the invention is not limited to the described embodiment, which is only for example has been described. Without leaving the scope of the invention, the removable cage can be bi Idenden Latticeworks change, as do other details of execution (cross-section of the struts, inclusions, number the winches, handle connection devices ...) can be modified.

The basic advantages of the method and the device for assembling a tower crane according to the invention are the following:

- there is a bare crane column (wind resistance is m i η i ma I)

- It is the dismantling of the auxiliary assembly equipment and the Guiding devices possible for the assembly of other cranes can be used;

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- During assembly, a minimum of imbalances occurs. There are therefore few torsional loads in the mast: one works practically all the time along the neutral vertical axis;

- The telescopic cage, due to its symmetrical structure, always offers the same strength regardless of the desired direction;

- the height of the cage is minimal, not more dependent on the height of the elements which are arranged one above the other en sol I;

the parts of a mast element are positioned and assembled around the slide, above the tip of the temporary mast and below the removable slide cage.

As an example of use, it should be noted that the invention for the assembly of a crane. high performance , which has the following properties:

- the crane column is 100 meters high and contains elements of

6 meters high, each of these elements weighing 3 tons;

- Capacity: from 15 tons with a radius of 70 meters;

- Empty weight: 150 tons; Mast of 4 m 4 m.

In the device according to the invention , a detachable cage of 4 × 4 × 6.3 m is used, which carries two winches for 110 tons , which have an achievable path of 1.6 m.

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However, it should be noted that the invention equally applicable to cranes with klt-int-rcr dimensions is.

It should be pointed out specifically .juf tο I qeηde points:

- the true ones to the masterpiece! the loads exerted in a de-telescopic manner sj η d are identical to the loads exerted during operation (work de = - Kr one); For this reason, the mast should not be oversized, so that relatively strong torsion and rit-gebela ^ tuiiri.n, ι us ζ uha I t en, occur during assembly with all known devices;

- the mast elements do not contain any guide part or

Lifting part of the slider or the cage; in particular, these standard elements are not provided with support members or support pins which are only arranged on the slide at regular intervals; it can be seen that the masfwerk according to the invention consists of elements whose cost price is reduced; the crane column obtained is as light and ^c o bare as possible: this is particularly interesting for masts that have an increased number of elements arranged one above the other;

the structures forming the cage and the mast elements are designed in such a way that they meet the requirements placed on their transport; In the example already mentioned above, the cage and each mast element are made from an assembly of four angle pieces or two planes, each 2 m by 2 m, which gives the mast a size of 4 χ 4 m.

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Further, the to St _t ■ uerkahi ne access leading conductor is disposed of the crane inside the masts. The circuit is constructed terelemcnten from fixed Lei, wherein a Le i th re I * ^j men t is in each mast element, and of collapsible bulkhead en surrounded by the displacement of the slide out of a lifting step s to enabling.

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Claims (1)

PATENT Attorney DIPL-INQ. JOACHIM STREET HANAU RÖMERSTR. 19 POSTBOX 793 TEL. (06181) 20803/80740 · TELEQRAMME: HANAUPATENT ■ TELEX- 4 18478 « pat 27212G3 POTAlN S.A. Avenue du President Roosevelt Chevi I Iy Larue, VaI de Marne France May 9, 1977 (6695626 FR) Rb / Ml - 11 Method and device for erecting the mast of a tower crane, in particular a crane of great capacity Patent claims: Method for telescopic extension of a tower crane by stacking mast elements by means of a Lifting device and a sliding inner mast, marked by : - the lifting of the inner mast or slider by means of lifting devices, all of which can be dismantled Cage to be carried, - The lifting of the cage to the tip of the slider, the guide by means of devices fixedly arranged on the cage it is guaranteed - the addition between the top of the mast and the base of the cage of different, not yet assembled parts, which form a mast element, 709847/105 7 ORIGINAL INSPECTED ΡΟΤΑ IN SA
(1 1 533) - the fastening of these parts to each other around the sliding piece, the lashing of the received element on the Top of the mast, locking the base of the Cage at the top of the raised mast to begin a new assembly cycle, wherein the cage or the lifting device al Ie mounting elements the slider and the guide for the sliding movement between the slider and the cage, wherein the height of the cage is not directly related to the height of the mast elements, and upon completion of the telescopic structure of the cage dismantled and with all assembly and guide elements are lowered to the ground can be, and wherein during work operation the tower stripped of all these auxiliary facilities and is exempt and therefore minimal wind resistance offers. 2. The method according to claim 1, d d d u rc h g e k e η η ζ e i c h η e t that a cage without an opening is used is that the elements to be arranged one above the other under the Cage can be hung and assembled over the mast without a preferred direction. 3.. Method according to claim 1, characterized z ^ e i c h η e t that all assembly and guide elements, carried by the demountable cage between the inner slide and the outer mast a connection and Guide organ, or "flap", and that the only slider is provided with support means. 709 847/105 7 ΡΟΤΑ IN SA
(1 1 533) Method according to one of the preceding claims, characterized in that al Ie lifting movements of heavy parts are avoided by that staples, axles or similar elements are provided that these parts with one or the other of the Lock sliding elements. Device for telescopic lifting of the tower of a Crane for carrying out the method according to one of the preceding claims, in particular for cranes with a great performance, which contain a telescopic cage, whose cross-section is identical to the cross-section of the mast, and the one above the mast around a slider is assembled around and a support structure as an assembly aid represents, characterized in that the lifting means (14, 15, 16, 17) fixed to the removable Cage (10) are arranged and between the struts (27) of the cage and the struts (26) of the slider (6) are arranged to cooperate with support members (18) attached to the slider (6) that the slider (6) can be raised by longitudinal displacement, and that to the upper and lower cross struts of the cage (10) viewed devices (23, 24) the movement of the slider (6) to lead . Device according to claim 5, characterized in that the base plate of the struts (26) of the slider (6) has a cross strut in the form of a cross, which has a retractable and releasable lock near its outer region, which is over the tip of the strut to be lifted mast is tackable. -A- 7098 "47/1057 POTAIN SA
(11 533) Device according to Claim 6, characterized in that the locks (49) of the slider (6) contain a frame (55) which by means of a horizontally displaceable axis (48) can be fastened in fixed bearings transversely to the strut that the staple connection between the mast and slider (6) by two retractable pins (57, 58) takes place that when the slide (6) is moved, the latch (49) run vertically until the assembly of the frame (55) on an axis enables the Remove loads on the two pins (57, 58). Apparatus according to claim 5, characterized in that the cage (10) also includes equipped with at least two hydraulic winches (14, 15) is, the lifting means represent that the lifting means through means (16, 17) for supporting the slide (6) contain that these parts (14, 15, 16, 17) on the base plate of the cage (10) in two each other opposite angles are arranged. Device according to claim 8, characterized in that that the upper ends of the winches (14, 15) contain a profiled locking member (19), which engages in the form of a latch under a support member (18) attached to the slider (6), that the successive support members (18) z. B. in the form of downward facing hooks are regularly attached along a strut (26) to a straight line Train ratchet. 709847/105 POTAIN SA
(1 1 533) 10. Device according to one of the preceding claims 5, 8 or 9, characterized in that the support and catching means (16, 17) at the level of the winches (14, 15) are designed as a double lever that the arms of this double lever are partially on Cylinder of the winch (14, 15) over I open to with to be able to engage their free ends under the support members (18) attached to the slider (6), that the double levers (16, 17) enable the lever winches (14, 15) to retract, with the slide (6) is held in its upper position. 11. Device according to one of claims 5 to 10, characterized in that the removable telescopic cage (10) is constructed from at least two latticework, which are connected to each other above the mast to represent a support structure for the lever winches (14, 15) that Guide means (23, 24) and a handle connecting device enable the transfer of loads between the higher slide (6) and the mast. 12. Device according to claims 1 and 11, characterized in that the guide for the relative movement between the cage and slide (6) by fillet wheels (23, 24) are implemented in pairs in opposing positions on the upper and lower transverse struts (22 , 21) of the cage (10) are arranged , and that during the course of the assembly, these bevel gears (23, 24) roll along the struts (27) of the slider (6) and that during operation of the crane (after assembly) the Rollers (23, 24) are removed from the crane column at the same time as the cage (10). 709847/105 POTAIN S.A. 13. Device according to one of claims 5 to 12, d a through characterized in that the height of the slider (h) is at least equal to the sum of the heights of the cage (10) and a standard mast strap to be added fs is. 14. Device according to one of Claims 5 and 8 to 12, characterized in that the Height of the cage (10) is as small as possible that the smallest value of the height of the cage (10) by the required Length that is required to complete a ensure correct guidance of the slider (6). 15. Device according to one of claims 5 to 14 for implementation of the method according to claim 2, characterized in that the base of the cage (10) a fastening device, e.g. B. a rail has, and that the parts of the mast element to be agitated is hung under this rail and around the extended Slider (6) are arranged before being assembled will. 16. Device according to claims 5 and 11, for implementation of the method according to claim 3 or 4, characterized in that the stitching connecting device of the slider (6) on the top of the attached mast between each of the four struts contains: - A removable flap (11) which is heavy and strong Part in one piece, with tack-hole profiles and is provided with Schraüb verbiηdungseiηrichtungen that the "Flap" (11) either on the cage (10) (during the 709 847/105 POTAIN SA
(11 533) Assembly of the tower) or on the unit consisting of slide (6) and mast (during work of the crane) is attached, - one diagonal at the base of the strut of the slider (6) arranged sliding element, the holes has to with the flapUI) a staple connection enter, wherein the sliding element has the shape of a guide cap, - Angle plates attached to the slider (6), intended to absorb the torsional loads acting on the struts, a ¹ fastening plate which is firmly connected to the base of the cage (10) and which is attached to an analogous plate of the cap (11 ) can be screwed on, wherein the connecting elements and HeftverbiηdungseIemente of bolts (49) are completed, which are attached to the base plate of the slider (6). 17. Device according to one of claims 5 and 8 to 10, characterized in that the shape of the support members (18) of the slide (6) is so formed is that a displacement of the slider (6) upwards is possible that the inhibiting members (19) of the Winches (14, 15) and the ends of the double levers slide along the upper surface of these support members (18), up, while the cage goes up to the extended one Slider (6) is raised, the winches (14, 15) and the double lever (16, 17) are retracted to the outside to bypass the support members (18). 709847/105 7 POTAIN SA
(1 1 533) 18. The device according to claim 11, characterized in that that the cage (10) consists of four elbows or two flatteners in an L-shape, and that the lifting means are arranged at the angles of at least two of the L-shaped parts. 19. The device according to claim 11, characterized in that that the cage (10) is created by assembling two latticework in a U-shape. 20. Device according to claims ^U 3 and 11, characterized in that the cage (10) is provided with sliding blocks which slide along the struts (27) of the slider (6), while a relative displacement of the cage with respect to the slider ( 6) succeeded. 21. Device according to one of claims 5 to 20, d a through characterized in that the lifting means and the guide means attached to the cage, and the support members (18) present only on the slider (6) are provided in order to move in a vertical direction Loads when extending telescopically on the outer masts to transfer, which is not damaged in this way by the assembly process, as the mast elements do not contain any lifting or guiding devices. 22. Device according to one of claims 5 to 21, characterized in that a TpiI each mast element is provided with ladder steps which form an access ladder to the control cabin of the crane that the ladder inside the masterworks. is organized and by Surround protective walls or other safety devices is that the protective walls are arranged on the latticework of the mast elements that they during the telescopic movement can be folded or retracted against the latticework, and that this structure prevents the displacement of the slider (6) inside the mast. - 9 - 709 847/105 7