DE1965651A1 - crane - Google Patents

Description

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109828/1087

BAD ORiGiNAt

VPA 69/1481

are led to electrical control and control devices for the engines of the two slewing cranes. From one slewing crane to another movable electrical lines are also routed over the Control signals for the interconnected operation of the two slewing cranes are passed on. Used to rotate the platform in double operation a separate slewing gear drive, in which two pinions driven by electric motors are fixed in one on the support column Engage the ring gear.

The invention brings an improvement to a crane with a boom rotatable about a vertical axis. According to the invention

| k the crane mast is designed as a rope tower, inside Lifting and luffing ropes are guided, and the luffing mechanism and hoisting mechanism are stationary near the foot of the rope tower, in particular to form a 'structural unit summarized, arranged. In this way, the engines can be moved closer together, so that maintenance and Accessibility are facilitated. In addition, the moved crane mass is reduced and the electrical line connections between the electrical control and control devices and the associated electrical drive motors are shortened »furthermore Slip rings can be omitted. ,, Because the luffing and lifting mechanism are taken out of the crane mast, a very narrow design of the crane mast designed as a rope tower is made possible, so that when using (tes Krana on ships there is good visibilityaa

ρ "guarantees aind..

According to one embodiment according to the invention, the boom is on one rotatable rope tower can be moved around a horizontal axis and in addition to the luffing mechanism and lifting mechanism, there is a slewing mechanism fixed for the sail tower »This eliminates the need for moving height connecting lines to the electric motor for the slewing gear.

The drawing shows aind embodiment of the invention. It aalgeni
+ stored

-3-109828 / 1087

- 3 - VPA 69 / H81

Pig. 1a an elevation,

Pig. 1 "b a side elevation,

Pig. 1c a plan of a double crane,

Pig. 2a an elevation of another double crane,

Pig. 2b a side elevation on this and

Pig. 2c the associated floor plan.

The one in Pig. 1a illustrated board crane for a ship S "has a boom 2 rotatable about a vertical axis 1. At the end of the boom 2, a rope 3 is attached, which has rollers 4 to guided and connected to a cable drum 9 .. This cable drum 9 is driven by a luffing gear motor 11 via a transmission 10 driven. A lifting mechanism, which is equipped with a drive motor 12, is used to raise and lower a load 10 and cable drum 13 on a roller 14 to 18 guided Load rope 19 is working. In the crane according to the invention, the crane mast is designed as a rope tower 20, inside which the hoist rope

19 and the luffing rope 3 are guided, the luffing mechanism and hoist near the foot of the rope tower 20 stationary, in particular to a unit summarized, are arranged. The electrical switching and control devices 21 for the electrical drive motors of the engines are also close to the bottom of the rope tower fixedly arranged. Hoist gear, luffing gear and possibly also the electrical switching and control devices are preferred housed in a common housing 22. This is how it is not required the machines and equipment in fully protected Run porm. -

One embodiment of the invention is the rope tower fixedly arranged and the boom 2 is attached to a support ring, which is rotated around the fixed rope tower

20 is rotatably arranged. A slewing gear motor 24 is used for this purpose, which has a gear 25 and a pinion 26 with one on the Geilturm 20 fixed ring gear 27 connected to the torque is. The rollers arranged at the head of the rope tower 20 are 3ind 4 to 8 and 14 to 18 for the hoisting and luffing ropes around the fixed one Rope tower 20 arranged to be rotatable, whereby the necessary pivoting of the rope pulleys during a rotary movement of the extension

109828/1087

sad

'- ik ~ ^: - VPA 69/1481

casual 2 is reached. The rollers 6 to 8 and H to 16 are fixedly mounted in a housing 28 which is rotatably arranged about the axis 1 via bearings 29 on the head of the rope tower 20. A carrier 30 for the rollers 4, 5 and 17, 18 is attached to the housing 28 so as to be rotatable about a vertical axis 31. In this way, in the case of small pivoting movements of the boom 2, only the carrier 30 will also pivot about its axis 31 and, after reaching its maximum pivoting range of approximately 100 °, the housing 28 will be rotated via the bearing 29. With a pivoting movement of the carrier 30, the cables 3 and 19 are bent around the rollers 6, 7 and 15, 16, while with a rotational movement of the housing 28, the cables guided within the cable tower are subjected to a torsional stress of 3.19%. The rotatable arrangement of the carrier 30 on the housing 28 ensures that when the boom 2 is pivoted about the angle oi, the cables within the cable tower 20 are only rotated by about half the angle oC.

The rotating mechanism for the boom 2 is expediently arranged on the rotatable support ring 23 and the pinion 26 of the rotating mechanism engages in a ring gear firmly connected to the rope tower 20 a. In that the boom 2 is attached to a support ring 23 is, the moving masses are kept very small, so that the slewing gear accelerates faster.

fc The arrangement of the boom 2 on a support ring 23 makes it possible in addition, to expand a crane in the manner of a modular system to a double crane, in which a further hoist 2 on a second, also through a rotating mechanism around the common one fixed rope tower 20 rotatable ring 23 is arranged. This makes it possible to use a common ring gear 27 and two rotating mechanisms both an independent single operation of both booms and a double operation in which both booms 2 on one work together to carry out a load.

According to another embodiment of the invention, the slewing gear for the boom is also arranged in a stationary manner near the foot of the cable tower and a pinion of the slewing gear engages in one

«# 1087 BATHROOM OBiQIMAL

- tr- VPA 69/1481

a ring gear attached to the rotatable Hing dee Auelegere. This means that all electric drive motors can be arranged in a fixed manner so that all moving electrical lines omitted. This crane can also be based on a modular system can be extended to a double crane.

As can be seen from Fig. 1b, the boom 2 is about one horizontal axis 32 movable.

In order to achieve a parallel position of the to reach both boom 2, these are on the associated Support ring 23 by a releasable connection (screw bolt) a vertical axis 53 rotatably mounted (Pig. Ic). The on their trestles 35 are lowered Aueleger 2 before recording of a double operation after loosening screw bolts 34 Rotate about the axes 33 with the aid of the slewing motors 24 in the position indicated by the center line P. Then be the boom with the screw bolts 34 back on their support rings attached and to take up the double operation in their parallel location (shown in dashed lines).

According to a further embodiment of the invention is - how Fig. 2a shows - Her rope tower 20 fixed on a rotatable platform 36 attached, which has independently rotatable disks 37 on which the boom 2 are articulated. Here you can the slewing gear for the boom 2 near the foot of the rope tower 20 can also be arranged in a fixed manner. A pinion 38 of the rotating mechanism engages in one of the rotatable disks 37 for the boom attached gear crane 39 a. Since the cable tower 20 is arranged to be rotatable, the housing 28 with the cable pulleys 6 to 8 and 14 to 16 be firmly connected to the rope tower 20, and only the rollers 4, 5 and 17 »18 mounted on the carrier 30 bind around the Axes 31 arranged so that they can pivot, so that the rotary movements of the boom 2 in the individual operation of the crane can follow: Via the gear 25 and the clutches, optionally with the ring gear 39 of the rotary jacks 37 or over heat! 41 with a feast The ring gear 42 arranged on the platform 36 can be coupled

BADORtGLNAU -6-

. 100028 -

- VPA 69 / H81

can. This saves a special drive for the platform.

Due to the fixed assignment of the cable drums 13 for the hoists of both booms 2, it is possible to have the ropes 19 for the hoists work on an internal gripper 43, as is done in Pig. 2c is shown in dashed lines. Here, both cable drums 13 of the hoist units are connected, for example via shafts 45, by a differential limit switch 44 (Pig · 2b), which indicates ^{the positions: "Gripper open" and "Gripper closed 11".} In the Greiferbetritb the hoist motors 12 and the Wippfe plant motors 11 are controlled synchronously as in double operation of the two booms 2.

In a simple way, in single operation, collision of the boom can be prevented by using the two slewing gear for the disks 37 are connected to a differential limit switch via shafts. This differential limit switch detects the relative Movement of both booms and is brought into action on the electrical control device.

In a further embodiment of the invention, two booms are arranged on a common hanging that can be rotated around a fixed rope tower, with head rollers for lifting and Wi pp- W ropes of both arms being arranged to be rotatable around the fixed rope tower. The rotatable Hing has independently rotatable discs to which the booms are hinged. With this embodiment, the moving dimensions can be reduced compared to the crane according to FIG. 2a.

12 claims 2 Piguren

-7-

Claims (12)

VPA 69/1481 Claims Crane with a boom that can be rotated around a vertical axis, characterized in that the Kranaast as a rope tower (20) is formed, in the interior of which hoist rope (19) and rocker hatchet (3) and that the luffing gear and lifting gear close to the foot of the rope tower (20) are fixed, in particular combined into a structural unit. 2. Crane according to claim 1, characterized in that the hoist, luffing gear and optionally auoh electrical switching and Control devices (21) are housed in a common housing (22) ". 3. Crane according to claim 1 or 2, characterized in that the Cable tower (20) is fixed and the boom (2) is attached to a support ring (23) which is driven by a rotating mechanism is rotatably arranged around the fixed rope tower (20) and that at the head of the rope (20) arranged rollers (4 to 8 and 14 to 18) for hoisting ropes (19) and luffing ropes (3) are rotatably mounted around the fixed rope tower ('2O). 4. Crane according to claim 3, characterized in that rollers (6 to 8 and 14 to 16) are mounted in a housing (28) rotatable about the cable tower, to which a carrier (30) with further Rollers (4,5 and 17,18) for hoisting ropes (19) and luffing ropes (3) are pivoted. 5. crane naoh claim 2 and 3, characterized in that the Rotary gear for the Aueleger (2) is arranged on the rotatable support ring (23) and a pinion (26) of the rotary gear in one engages the ring gear (27) firmly connected to the rope tower (20). 6. crane naoh claim 3, characterized by a further boom (2) which is attached to a second, by a slewing gear to the common fixed rope tower (20) rotatable ring (23) -8-109828 / 1087 is arranged - • β-- VPA 69/1481 7. Crane according to claim 2 and 3 »characterized in that the slewing gear for the boom close to the foot of the rope tower is arranged stationary and a pinion of the rotating mechanism in a ring gear attached to the rotatable ring of the boom intervenes. 8. Crane according to claim 6, characterized in that the boom (2) on the associated support ring (23) by a releasable connection (34) are mounted rotatably about a vertical axis (33). W 9. Crane according to claim 1 or 2, characterized in that the rope tower (20) is fixedly mounted on a rotatable platform (36) which has independently rotatable disks (37) to which the booms (2) are articulated are. 10. Crane according to claim 1, characterized in that two booms are arranged on a common ring rotatable around a fixed rope tower, which are independent of each other has rotatable discs on which the booms are hinged and that head rollers for hoisting and luffing ropes of both booms are rotatably arranged around the fixed rope tower. ^ 11. Crane according to claim 6, 9 or 11, characterized in that ™ the cable drums (13) of the hoists of the two booms (2) are connected to a differential limit switch (44) and via their cables (19) to a common gripper (43). 12. Crane according to claim 1, characterized in that the boom is mounted movably about a horizontal axis on a rotatable rope tower and that in addition to the seesaw and Hoist a slewing gear for the rope tower is fixedly arranged. 109828/1087
BAD ORKSiNAL