Bridge crane arrangement

Patent metadata

Field	Value
Publication number	US-11319192-B2
Application number	US-201917048298-A
Country	US
Kind code	B2
Filing date	Apr 12, 2019
Priority date	Apr 20, 2018
Publication date	May 3, 2022
Grant date	May 3, 2022

Abstract

A bridge crane arrangement includes at least one main girder having a central web and a bottom flange; end girders supporting opposite ends of the main girder; a slide arranged between an end girder and the main girder, the slide allowing the movement of the end girder in relation to the main girder in at least its longitudinal direction and the rotation of the end girder and main girder in relation to each other; and a restrictor to restrict the movements between the end girder and the main girder. On the top surface of the end girder, there is arranged a support platform wider than the bottom flange, the slide includes a slide surface arranged on the top surface of the support platform and/or the bottom surface of the bottom flange, and the restrictor is arranged to the support platform on both sides of the bottom flange.

First claim

The invention claimed is:

1. A bridge crane arrangement comprising:
at least one main girder for a trolley, the at least one main girder having a longitudinal central web which has at least one web plate, and a longitudinal bottom flange arranged in a bottom part of the longitudinal central web and protruding from the longitudinal central web onto both sides thereof;
at least two end girders adapted to support opposite ends of the at least one main girder;
wheels arranged to the at least two end girders and intended to move the bridge crane arrangement along substantially parallel guides which are transverse in relation to the at least one main girder and thus to support the entire bridge crane arrangement;
a slide arranged between an end girder of the at least two end girders on at least one side and a corresponding end of the at least one main girder, the slide allowing movement of said end girder of the at least two end girders in relation to the at least one main girder in at least a longitudinal direction thereof and rotation of said end girder of the at least two end girders and the at least one main girder in relation to each other; and
a restrictor configured to restrict the movements between said end girder of the at least two end girders and the at least one main girder,
wherein on a top surface of said end girder of the at least two end girders there is arranged a support platform wider than the longitudinal bottom flange,
wherein the slide includes a slide surface arranged on a top surface of the support platform and/or a bottom surface of the longitudinal bottom flange of the at least one main girder, and
wherein the restrictor is arranged to the support platform on both sides of the longitudinal bottom flange of the at least one main girder, outside the at least one main girder.

2. The bridge crane arrangement as claimed in claim 1 , wherein the slide surface is formed of tape having sliding characteristics, and having a core structure on top of which the slide surface is arranged.

3. The bridge crane arrangement as claimed in claim 1 , wherein the slide surface is formed of a sprayable substance comprising sliding characteristics, which has been sprayed, painted, or coated on the top surface of the support platform and/or on the bottom surface of the longitudinal bottom flange of the at least one main girder.

4. The bridge crane arrangement as claimed in claim 1 , wherein the slide surface is adapted on a substantially horizontal plane.

5. The bridge crane arrangement as claimed in claim 1 , wherein the restrictor comprises raising elements installed on the top surface of the support platform on both sides of the longitudinal bottom flange of the main girder, and cover parts connected to the raising elements and extending on top of the longitudinal bottom flange.

6. The bridge crane arrangement as claimed in claim 5 , wherein the raising elements and cover parts are separate pieces.

7. The bridge crane arrangement as claimed in claim 6 , wherein the raising elements are formed of a plurality of superimposed plates.

8. The bridge crane arrangement as claimed in claim 5 , wherein the raising elements and cover parts are integrated into a uniform structure.

Assignees

• Konecranes Global Corp

Inventors

• Peippo Juha
• Kalliokoski Kirsi

Classifications

• B66C9/16 Primary

  with means for maintaining alignment between wheels and track · CPC title

• B66C9/10 Primary

  Undercarriages or bogies, e.g. end carriages, end bogies · CPC title

• B66C6/00 Primary

  Girders, or track-supporting structures, specially adapted for cranes (base supporting structures with legs B66C5/00; girders in general E04C3/02) · CPC title

• B66C17/00

  Overhead travelling cranes comprising one or more substantially horizontal girders the ends of which are directly supported by wheels or rollers running on tracks carried by spaced supports · CPC title