Mining roof support frame with base skids lifting device
AssigneeDBT Bergbau-Service Gmbh
InventorAlois Scheunert
Life of this patent
Estimating the term…
Abstract
The disclosure concerns a mining roof support frame including at least one hydraulic lifting ram which is mounted on a bridging member connecting two base skids of the main frame, and which by way of a pressure-generated force can be extended downward against a walking bar of the walking unit of the mining roof support frame located between the base skids. In accordance with the disclosure, the base skids lifting device is connected with the bridging member such that it can pivot. With walking unit ram pivot pins withdrawn only on one side, the base skids lifting device can be pivoted out of the way about opposing pivot pins.
Claims19
A mining roof support frame comprising:
- a shield roof support frame including a main frame, two base skids, and at least one hydraulic lifting ram of a base skids lifting device mounted on a bridging member connecting the two base skids of the main frame;
- and,
- the lifting ram including a pressure-generated force extending downward against a walking bar of a walking unit located between the base skids of the mining roof support frame, wherein the base skids lifting device is pivotably connected with the bridging member.
A base skids lifting device for a mining roof support frame comprising:
- a shield roof support frame including a main frame and two base skids,
- at least one hydraulic lifting ram mounted on a bridging member connecting the two base skids of the main frame producing a pressure-generated force extending downward against a walking bar of a walking unit of the mining roof support frame located between the base skids;
- and,
- the base skids lifting device is selectively connectable and pivotable with the bridging member.
Dependencies are inferred from the claim text.