EP2697148B1 - Arrangement consisting of a travelling gear carrier and a running wheel block fastened detachably thereto, and installation method therefor - Google Patents

Description

The invention relates to an arrangement comprising a chassis carrier and a rotor block detachably secured thereto, wherein the rotor block consists of a housing with at least one connection surface and an impeller mounted in the housing and protruding out of the housing, and the impeller block is aligned with the chassis carrier.

The invention also relates to a method for assembling an arrangement comprising a chassis carrier and an impeller block, wherein the impeller block consists of a housing with at least one connection surface and an impeller mounted in the housing and protruding out of the housing, in which the impeller block is aligned with the chassis carrier and screwed to it. An arrangement and a method according to the preamble of claims 1 and 10 are achieved by DE 19540217 C1 disclosed.

Various types of impeller blocks are known which conceptually provide or permit the replacement of the impeller or impeller block in different ways.

From the German patent DE 10 2004 008 552 B3 a block-shaped impeller block with a housing is known, which has at least one support surface receiving a bearing force. In opposite side walls of the housing pivot bearing seating surfaces for sliding and / or roller bearings for the storage of an impeller are arranged for disassembly of the impeller from the housing, the sliding and / or rolling bearings to the outside and the impeller to an approximately transversely thereto side expandable.

Furthermore, from the German patent specification DE 31 34 750 C2 Impeller blocks are known, which are formed from two welded together halves of a bearing housing. In the bearing housing rotary bearing seating surfaces are pressed for bearings in which a hub of an impeller is supported. To screw the impeller block to a chassis support such as a head support of a crane, are on an upper terminal surface and all other sides of the housing Holes provided, which serve to receive fastening screws. However, replacement of this impeller block is possible only in its entirety. After replacement, the entire impeller block must be re-attached to the chassis support - just as in the initial installation - by means of screws. In this case, the runner block is in its position relative to the chassis carrier with the other wheels align so that the axis of rotation of the impeller perpendicular to the impeller track on which the impeller rolls, runs.

This assembly process is time-consuming by the alignment. If the alignment procedure is not carried out, there is a risk that the impellers will be scraped (skewed) due to skewing on the impeller path and thus wear out more quickly. Furthermore, there is the danger in the application of a bridge crane that the running behavior of the bridge crane is sensitive disturbed by skew, ticks and wheel flange wear. In addition, lateral forces occur with increasing skew angle, which load the chassis carrier beyond the operating stress. This problem is described in detail in DIN 15018.

On this basis, the object of the present invention is to provide a way to facilitate the replacement of impeller blocks.

This object is achieved by the reproduced in claim 1 arrangement. Advantageous embodiments of the invention are specified in claims 2 to 9 and 11. We also achieved this object by the reproduced in claim 10 method.

According to the invention is in an arrangement of a chassis support and a detachably attached thereto impeller block, wherein the impeller block consists of a housing with at least one pad and a mounted in the housing and projecting out of the housing impeller and the impeller block is aligned with the chassis carrier, wherein the pad of the impeller block, a machined groove is arranged, in which a machined plate is held positively, a facilitated replacement of a wheel block achieved in that an alignment of the impeller block is fixed to the chassis support such that after the alignment of the impeller block to the Chassis support the plate is firmly connected to the chassis carrier. Since when replacing the impeller block as a result of wear or defect, the plate remains on the chassis support, the new impeller block, which also has a groove according to the invention can be installed without realignment of the track of the new impeller block. The plate and the groove thus form a positive connection according to the tongue and groove principle to ensure alignment. In this arrangement according to the invention, the fact that the careful alignment of the impeller block with the chassis carrier that has taken place during the initial assembly is utilized. For this purpose, the impeller block is aligned with loosely inserted plate on the chassis carrier and then fixed the plate on the chassis carrier insoluble and immovable.

In a preferred embodiment, the groove and the plate are formed such that a successful alignment of the track of the impeller is held and an adjustability of the width of the track of the impeller in the manner of a linear guide is maintained. Thus, in a new wheel block, the alignment can be adopted immediately and the required adjustment of the track width can be easily achieved by lateral displacement of the wheel block. After setting the gauge, the tightening of the screw of the impeller block takes place on the chassis carrier.

In a preferred embodiment, the plate is welded to the chassis carrier.

In order to achieve an easy adjustability of the track, it is provided that the groove in the connection surface forms opposite and linear guide surfaces against which the rectangular plate rests. For this purpose, it is necessary that the linear guide surfaces of the groove are aligned parallel to the axis of rotation of the impeller of the impeller block. The gauge is adjusted with loose screw connection between the wheel block and the chassis carrier.

The actual attachment of the impeller block to the chassis carrier takes place advantageously via a screw.

Particularly advantageously, it is provided that the connection surface is formed by two respective outer lateral raised surfaces, between which the groove is arranged.

Advantageously, it is provided that the plate has a thickness corresponding to the depth of the groove.

Particularly advantageous is provided as a field of application that the chassis carrier is part of a crane, a gantry crane or a crane trolley. Basically, in these cranes, the alignment of the impeller blocks to the rails is important but also expensive. Only with a good alignment increased wear of the wheels can be avoided.

According to the invention, a method for assembling an arrangement comprising a chassis carrier and an impeller block, wherein the impeller block consists of a housing with at least one connection surface and an impeller mounted in the housing and projecting out of the housing, in which the impeller block is aligned with the chassis support and thereto is screwed, a facilitated replacement of an impeller block achieved in that after alignment of the impeller block to the chassis support a machined in a machined groove of the pad of the impeller block machined plate is firmly connected to the chassis support. Advantageously, the plate is first loosely inserted in the groove during assembly of the impeller block and aligned together with the impeller block in an initial assembly. Only then is the plate permanently connected to the chassis carrier for the permanent whereabouts.

Preferably, in this case, the plate is welded to the chassis carrier.

• Figur 1 eine schematische perspektivische Ansicht eines Laufkrans;
• Figur 2 eine schematische perspektivische Ansicht eines Laufradblocks des Laufkrans aus Figur 1;
• Figur 3 eine schematische Draufsicht auf ein Ende eines Fahrwerkträgers des Laufkrans aus Figur 1 und
• Figur 4 eine teilgeschnittene schematische Seitenansicht auf ein Ende eines Fahrwerkträgers gemäß Figur 3.

Further details of the invention will become apparent from the following description of an embodiment with reference to the drawing. Show it:

• FIG. 1 a schematic perspective view of a crane;
• FIG. 2 a schematic perspective view of an impeller block of the crane FIG. 1 ;
• FIG. 3 a schematic plan view of an end of a chassis carrier of the overhead crane FIG. 1 and
• FIG. 4 a partially sectioned schematic side view of an end of a chassis carrier according to FIG. 3 ,

In the FIG. 1 is a generally designated 1 overhead crane 1, which is designed as a so-called two-girder bridge crane. The traveling crane 1 can be moved on a rail track with two mutually parallel and spaced apart rails substantially horizontally in a crane travel direction K. Here, the rails are indicated only schematically by dash-dotted lines.

The overhead crane 1 comprises two parallel and spaced apart box girders 2A, B, which form a horizontal crane girder and serve as a travel path for a trolley 3 with a hoist 4. Here, the trolley 3 moves on the box girders 2A, B in a horizontal Katzfahrrichtung k, which is aligned at right angles to the crane travel direction K. Accordingly, the box girders 2A, B also extend in Katzfahrrichtung k. Alternatively, only a single box girder or double T-profile may be provided in the manner of a one-girder bridge crane. The trolley 3 then moves a lower flange of the box girder.

The box girders 2A, B are at their respective opposite ends on transversely thereto and thus in the crane driving direction K running gear carriers 5. At the opposite ends of the box girder 2A, B is in each case an impeller block 6 is arranged, which is optionally driven by an electric motor. The impeller blocks 6 are movable on the rails, not shown, in the crane drive direction K.

The FIG. 2 shows a schematic perspective view of the impeller block 6, each having a downwardly open, box-shaped housing 7, on whose upper side an upper connection surface 8 is provided, which is also called head connection surface. The connection surface 8 is delimited by two respective raised and flat surfaces 9 lying on the outside and thus lying in the crane running direction K in front and behind. The surfaces 9 extend over the entire width of the housing 7. Seen between the surfaces 9 in the crane running direction K, a planar and deeper machined region or a machined groove 10 is arranged, which surrounds the surfaces 9 in the connection surface 8 separates each other. The groove 10 extends over the entire width of the housing 7 and between its open sides. This extension direction runs in Katzfahrrichtung k. Also, the groove 10 is seen in crane running direction K front and rear bounded by guide surfaces 10 a, which are formed by the surfaces 9.

In the housing 7, an impeller 11 is mounted, which rotates with a hub 12 about a transverse to the crane running direction K and horizontal axis of rotation D and down to a lower side 13 out, which is the terminal surface 8 opposite, partly from the housing 7 sticks out. In the usual installation position, the rotation axis D is aligned horizontally. The hub 12 is held laterally in sliding and / or rolling bearings, which are inserted into the housing 7.

In the machined to size groove 10 is also machined to size plate 14 can be used. In this case, the plate 14 abuts the two guide surfaces 10a of the groove 10. The plate 14 and the groove 10 are machined such that they are mutually positive fit and accurate.

Furthermore, the FIG. 2 can be seen that in the surfaces 9 mounting holes 18 are arranged. For each surface 9, two fastening bores 18 are provided in the region of the lateral ends of the surfaces 9. About this total of four mounting holes 18 of the impeller block 6 is releasably secured to the chassis support 5. For this purpose, the mounting holes 18 are formed as through holes or threaded holes. Also, instead of the mounting holes 18 per surface 9 a groove can be provided with an undercut, in which then nuts can be used as a function of nuts.

In the FIG. 4 is a partially cut schematic side view of one end of a chassis support 5 with a mounted impeller block 6 to see. The end of the chassis carrier 5 has a downwardly, to the sides and to the front or rear - seen in crane running direction K - open recess 17. The recess 17 is bounded above by a flat and rectangular mounting plate 16, which is part of the chassis support 5. When first mounting an impeller block 6 to one end of the chassis support 5, the impeller block 6 is inserted into the recess 17 and its Pad 8 comes to rest against the recess facing side of the mounting plate 16. Subsequently, the impeller block 6 is screwed by four screws 9, which extend through the mounting holes 18, with the chassis support 5. Here, the plate 14 is loosely inserted into the groove 10 and mounted with. Then the impeller block 6 is aligned in the crane running direction K, ie the track of the impeller block 6 in order to be able to roll along the rails of the traveling crane 1 with little wear. The impeller block 6 is for this purpose pivoted about an imaginary vertical axis and thus aligned with respect to its track. After alignment of the impeller block 6 and screwing the impeller block 6, the plate 14 is then welded to the mounting plate 16 of the chassis support 5 and thus fixed inextricably and immovably. For a preferred lock point welding, the mounting plate has four holes 15 which lie in the region of an inserted plate 14. By creating a weld in the holes, the underlying plate 14 is firmly connected to the chassis support 5. After assembly, thus the plate 14 is part of the chassis support 5. Alternatively, can be used to the hole spot welding and pinning and screwing.

Should it be necessary for a wear or a defect of a wheel block 6 whose replacement, the screws 19 are released, the plate 14 remains in the welded position. Then a new impeller block 6 of the same type is used with the dimensionally processed groove 10 and screwed. Since the plate 14 with respect to the crane travel direction K and thus the track of the impeller block 6 is already aligned, the alignment can be omitted in a change and the assembly is simplified. The gauge can be easily adjusted because the impeller block 6 is transverse to the crane travel direction K with its guide surfaces 10a along the plate 14 slidably, as long as the impeller block 6 is not yet firmly bolted to the chassis support 5. The new impeller block 6 is necessarily aligned with the plate 14 correctly with respect to its track.

The FIG. 3 shows a schematic plan view of one end of a chassis support 5 of the overhead crane 1 from FIG. 1 , In this view, the arrangement of the holes 15 for the attachment of the plate 14 via the hole spot weld on the mounting plate 16 is particularly well to see. Also, the screws 19 for releasably securing the impeller block 6 can be seen on the chassis support 5.

LIST OF REFERENCE NUMBERS

1

overhead crane

2A, B

Channel bars

3

trolley

4

hoist

5

suspension carrier

6

impeller block

7

casing

8th

terminal area

9

area

10

groove

10a

guide surface

11

Wheel

12

hub

13

page

14

plate

15

drilling

16

mounting plate

17

recess

18

mounting hole

19

screw

D

axis of rotation

k

Cross travel direction

K

Crane travel direction

Claims (11)

1. Arrangement comprising a running gear support (5) and a travel wheel block (6) detachably fastened thereto, the travel wheel block (6) comprising a housing (7) having at least one mating surface (8) and comprising a travel wheel (11) which is mounted in the housing (7) and which projects out of the housing (7), and the travel wheel block (6) being aligned relative to the running gear support (5), there being arranged in the mating surface (8) of the travel wheel block (6) a machined groove (10) in which a machined plate (14) is held in positive interengagement, characterised in that an alignment of the travel wheel block (6) relative to the running gear support (5) which has been carried out is fixed by connecting the plate (14) solidly to the running gear support (5) once the alignment of the travel wheel block (6) relative to the running gear support (5) has been carried out.
2. Arrangement according to claim 1, characterised in that the groove (10) and the plate (14) are so formed that an alignment which has been carried out of the line of travel of the travel wheel (11) is fixed, and adjustability is preserved for the track at which the travel wheel (11) follows this line on the principle of a straight-line guide.
3. Arrangement according to claim 1 or 2, characterised in that the plate (14) is welded to the running gear support (5).
4. Arrangement according to one of claims 1 to 3, characterised in that the groove (10) creates in the mating surface (8) straight-line guiding surfaces (10a) situated in opposite positions against which the square-cornered plate (14) rests.
5. Arrangement according to claim 4, characterised in that the straight-line guiding surfaces (10a) of the groove (10) are aligned parallel to the axis of rotation (D) of the travel wheel (11) of the travel wheel block (6).
6. Arrangement according to one of claims 1 to 5, characterised in that the travel wheel block (6) is screwed or bolted to the running gear support (5).
7. Arrangement according to one of claims 1 to 6, characterised in that the mating surface (8) is formed by two elevated lateral surfaces (9) which are each situated at the periphery and between which the groove (10) is arranged.
8. Arrangement according to one of claims 1 to 7, characterised in that the thickness of the plate (14) corresponds to the depth of the groove (10).
9. Arrangement according to one of claims 1 to 8, characterised in that the running gear support (5) is a component part of a travelling crane, a gantry crane or a crane trolley.
10. Method of assembling an arrangement comprising a running gear support (5) and a travel wheel block (6), the travel wheel block (6) comprising a housing (7) having at least one mating surface (8) and comprising a travel wheel (11) which is mounted in the housing (7) and which projects out of the housing (7), in which method the travel wheel block (6) is aligned relative to the running gear support (5) and is screwed or bolted thereto, characterised in that, once the travel wheel block (6) has been aligned relative to the running gear support (5), a machined plate (14) which is held in positive interengagement in a machined groove (10) in the mating surface (8) of the travel wheel block (6) is solidly connected to the running gear support (5).
11. Method according to claim 10, characterised in that the plate (14) is welded to the running gear support (5).

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