DE202006008683U1 - Railway crane for loading an unloading goods trains comprises deviating rollers for a lifting cable for lifting and lowering a hook which is coupled to the cable via a hook surface which can be lifted partially up to a boom via the cable - Google Patents

Abstract

Railway crane comprises deviating rollers (8) for a lifting cable (9) for lifting and lowering a hook (10) which is coupled to the cable via a hook surface (11) which can be lifted partially up to a boom (6) via the cable. Preferred Features: The hook surface is lifted completely up to the boom via the cable. One roller is arranged in the longitudinal direction of the boom in front of or behind the hook surface in the boom.

Description

The The invention relates to a railway crane with a vertical around a Axle rotatable on an undercarriage mounted uppercarriage, with a boom mounted on the superstructure and at least one in Outrigger mounted idler pulley for a hoisting rope for lifting and Lowering a load hook, wherein the load hook on a hook bottle with the Hoist rope is coupled.

Railway cranes are known in various designs from practice. All known Railway cranes have one at the free end of the boom Hook hook with the hoist rope coupled load hook on, over the heavy loads, such as completely prefabricated turnouts, raised and in place can be transported. A disadvantage of the known railway cranes is that the hook bottle is arranged together with the load hook below the boom head, which is why with boom not raised, such as when working Below the overhead lines is the case, the remaining lifting height, the is called Distance between load hook and ground is very low, so only Components of low height can be raised.

From that Based on the object of the invention, a railway crane to design so that the crane can be used even at low working height is.

The solution This task is inventively characterized in that the hook bottle over the hoist rope is at least partially liftable up to the boom.

By the possibility according to the invention Lift the crane bottle at least partially into the jib to be able to is it possible for the first time, the Crane at low working height, for example, below the catenary of a rail track, too without lifting the boom for lifting components of greater height, such as for example, for unloading prefabricated and stacked Track sections as well as for loading and unloading of material wagons use to be able to.

According to one preferred embodiment of Invention is proposed that the hook bottle over the Hoist rope completely is liftable into the boom, thereby ensuring the best possible working conditions predetermined low working height achievable are.

With a practical embodiment The invention proposes that in the boom at least two Deflection rollers are arranged, wherein in each case at least one deflection roller longitudinal the boom in front of and behind the hook bottle in the boom are. Through the simple and / or multiple deflection of the hoist rope on the different many pulleys can different heavy loads are lifted with the crane.

Around to allow lifting of the crane bottle to the boom, the pulleys are inventively arranged so that the hook bottle in the raised position in the boom between the pulleys is arranged in the boom.

The multiple deflection of the hoist rope over one Guide roller for lifting particularly heavy loads according to the invention thereby be achieved that the pulleys designed as twin roles are.

Finally will proposed with the invention that the boom different abutment points are arranged for fixing the hoist rope. Through the different Abutment points for the Hoist rope it is possible To convert the crane to lift normal and heavy loads can, the hoist rope after different frequent deflections over the Deflection rollers is fixed at the respective abutment points.

Further Features and advantages of the invention will become apparent from the accompanying drawings, in the two embodiments a railway crane according to the invention are shown only by way of example, without the invention on these embodiments to restrict. In the drawing shows:

1 a side view of a railway crane according to the prior art;

2 a side view of the boom head of a first embodiment of a crane according to the invention, representing the crane bottle in the retracted position;

3 a plan view of the boom head according to 2 ;

4 a perspective side view of the boom head according to 2 but showing the crane bottle in the lowered position;

5 a side view of the boom head of a second embodiment of a crane according to the invention, representing the crane bottle in the lowered position and

6 a perspective side view of the boom head according to 5 ,

The one in the picture 1 illustrated prior art railway crane consists essentially of an undercarriage 1 and one around a vertical axis 2 rotatable on the undercarriage 1 stored superstructure 3 , where the undercarriage 1 about landing gears 4 on tracks 5 is movable.

The superstructure 3 carries a boom 6 , on the one hand with the superstructure 3 around the axis of rotation 2 is rotatable and on the other hand about a pivot axis 7 is pivotable in a plane perpendicular to the rail plane.

The front part of the boom 6 forms a boom head 6a in which, in the illustrated embodiment, a deflection roller 8th for a hoist rope 9 for lifting and lowering a load hook 10 is stored, wherein the load hook 10 over a hook bottle 11 with the hoist rope 9 is coupled.

To balance the over the load hook 10 liftable load is on the boom head 6a opposite end of the superstructure 3 a counterweight 12 arranged, depending on the embodiment of the railway crane via a support arm to the outside displaceable on the superstructure 3 can be stored.

Furthermore, the superstructure 3 a driver's cab 13 arranged, from which all functions of the railway crane are controllable.

To a collision of the boom 6 To prevent with the electrical overhead lines, is the pivot angle of the boom 6 still limited above usually by the height of the electrical overhead lines. In addition to the rotatability and pivotability are the boom 6 often formed telescopically in length.

As shown in Figure 1 can be seen, the lifting height H, that is, the distance between the load hook 10 and the floor or rails 5 next to the swiveling angle of the jib 6 through the structural height of hook block 11 and load hook 10 limited, as well as in the 1 shown raised position the hook bottle 11 together with the load hook 10 below the boom head 6a is arranged.

The in the pictures 2 to 6 illustrated constructions of the boom head 6a differ from the known embodiment according to 1 in that, in particular from 2 It can be seen that the load hook 10 carrying hook bottle 11 completely into the boom head 6a of the jib 6 can be raised, resulting in a much higher lifting height H compared to the known railway cranes results.

To lift the hook bottle 11 over the hoist rope 9 to the boom 6 are in the jib 6 at least two pulleys 8th with axial distance zueinender so in the boom 6 arranged that over the hoist rope 9 hook flap to be lifted 11 between these spaced pulleys 8th Recording in the boom 6 place.

In the pictures 2 to 6 illustrated embodiments are each three Umlenkrollenpaare 8th in the boom 6 stored, with individual pulleys 8th as twin roles 8a are formed to a multiple deflection of the hoisting rope 9 to enable.

Depending on the weight of the load hook 10 Lifting load can be the hoist rope 9 over single or multiple over only two or all three Umlenkrollenpaare 8th be redirected. Fixing the hoist rope 9 on the boom 6 via abutment points 14 wherein in the illustrated embodiment, two spaced-apart recovery points 14 are provided in order to realize different Umlenkverhältnisse.

At the in 2 to 4 illustrated embodiment is a four-fold deflection of the hoisting rope 9 which is designed to lift normal heavy loads. The hoist rope 9 runs in this arrangement, starting from a cable drum 15 over the first pulley 8th , the hook bottle 11 and the second pulley 8th towards the foremost abutment point 14 , 4 shows how the hook bottle 11 together with the load hook 10 starting from the in 2 shown raised position for receiving or depositing a load is lowered.

The pictures 5 and 6 show a designed to lift very heavy loads designed eight-fold deflection of the hoist 9 , In this multiple deflection via a pulley 8th now comes the design of the pulleys 8th as twin roles 8a used because the hoist rope 9 , in particular from 6 seen twice over the hook bottle 11 directly adjacent pulleys 8th to be led. In this illustrated eightfold deflection of the hoist rope 9 is the hoist rope 9 at the rear abutment point 14 fixed.

For reasons of better clarity of the illustrations was in the perspective views according to 4 and 6 only the spatial arrangement of Umlenkrollenpaare 8th as well as the hook bottle 11 without the structural frame parts of the boom 6 or the boom head 6a shown.

The illustrated structural design of the boom 6 and in particular the boom head 6a is characterized by the fact that the load hook 10 carrying hook bottle 11 to increase the lifting height H to the boom 6 can be lifted into it.

With in such a way trained railway crane, it is also at low working height, for example below overhead lines, possible, Loads big height lift, for example, when unloading or loading prefabricated and stacked track bumps or points of one or on a material cart.

1

undercarriage

2

axis of rotation

3

superstructure

4

landing gear

5

rail

6

boom

6a

boom head

7

swivel axis

8th

idler pulley

8a

twin role

9

hoist rope

10

load hook

11

hook block

12

counterweight

13

cab

14

Abutment point

15

cable drum

H

Lifting height

Claims (6)

Railway crane with one around a vertical axis ( 2 ) rotatable on an undercarriage ( 1 ) mounted superstructure ( 3 ), with one on the superstructure ( 3 ) cantilevers ( 6 ) and at least one in the jib ( 6 ) mounted pulley ( 8th ) for a hoist rope ( 9 ) for raising and lowering a load hook ( 10 ), whereby the load hook ( 10 ) via a hook block ( 11 ) with the hoist rope ( 9 ), characterized in that the hook bottle ( 11 ) via the hoist rope ( 9 ) at least partially into the boom ( 6 ) is liftable. Railway crane according to claim 1, characterized in that the hook block ( 11 ) via the hoist rope ( 9 ) completely into the boom ( 6 ) is liftable. Railway crane according to claim 1 or 2, characterized in that in the boom ( 6 ) at least two pulleys ( 8th ) are arranged, wherein in each case at least one deflection roller ( 8th ) in the longitudinal direction of the boom ( 6 ) in front of and behind the hook block ( 11 ) in the boom ( 6 ) are arranged. Railway crane according to claim 3, characterized in that the hook block ( 11 ) in the boom ( 6 ) raised position between the pulleys ( 8th ) in the boom ( 6 ) is arranged. Railway crane according to claim 3 or 4, characterized in that the deflection rollers ( 8th ) as twin rolls ( 8a ) are formed. Railway crane according to one of claims 1 to 5, characterized in that on the boom ( 6 ) different abutment points ( 14 ) for fixing the hoist rope ( 9 ) are arranged.