Groove cutter drive with split inner wheel/integrated bearing

Abstract

The invention relates to a drive device for a construction machine, in particular for a groove cutting machine, comprising a connecting support and a wheel support, which is rotatably supported on the connecting support via at least one rolling bearing and which can be rotatably driven relative to the connecting support by means of a drive motor via at least one gear stage, a gear of the gear stage is supported in a non-rotatable manner on the connecting bracket and / or on a bearing guard rigidly connected to the connecting bracket by means of a flexible and / or movable bearing element in a radially displaceable and / or tiltable manner relative to the connecting bracket, the gear is disposed within the connecting bracket and is in rolling engagement and / or meshing with at least one other gear.

Description

technical field [0001] The invention relates to a drive for a construction machine, in particular in the form of a trench cutter, comprising a connecting bracket and a wheel support, which is rotatably supported on the connecting bracket by means of at least one rolling bearing and can be driven by a drive motor via at least one The gear stage is rotationally driven relative to the connecting bracket. The invention also relates to a trench cutter with such a drive. Background technique [0002] In underground or surface mining machines, rotatably driven work tools are often subjected to high forces and shock loads which, on the one hand, must be absorbed by sufficiently stable bearings and, on the other hand, should not damage the rotating ground The drive train of the drive that drives the work tool. In this case, the rotary working tools of such construction machines (for example, the cutting wheel of a trench cutter or the cutting drum of an open pit miner) are usually ...

AI Technical Summary

Problems solved by technology

[0003] On the one hand, the available installation space is very limited due to such a transmission stage inside the wheel bracket or the connecting bracket that rotatably supports the wheel bracket

On the other hand, there is the problem that when the work tool hits rocks or stones, for example in earthworks, the impact load of the work tool is transmitted to the gear stage and can damage it

[0004] In the case of trench cutters there is also the problem that a large number of different cutting wheels having geometrically different widths and diameters must be fastened to the cutting wheel drive

[0009] While this deformation can be limited if the surrounding or adjacent structural components are constructed sufficiently solidly or with increased wall thickness, internal installations can be made if the external dimensions are also limited, for example by the requirement to be able to fit a small, elongated cutting wheel The space will be reduced accordingly

This reduction in internal installation space in turn limits the performance of the transmission

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