公开(公告)号：US12162689B2

公开(公告)日：2024-12-10

申请号：US18171240

申请日：2023-02-17

Applicant: ROBBINS MINING, INC.

Inventor： Shirley Donnelly Riffe

IPC: B65G15/60 ,  B65G17/12 ,  B65G23/10 ,  B65G23/44

Abstract: A belt tension-reducing device is provided, which includes a support member; a pliable central wheel assembly configured to engage a both downwardly and upwardly moving portions of the conveyor belt; first and second outboard roller assemblies positioned to engage the downwardly and upwardly moving portions, respectively. A second effective rolling radius of the pliable central wheel assembly at a contact point with the upwardly moving portion of the conveyor belt can be greater than a first effective rolling radius of the pliable central wheel assembly at a contact point with the downwardly moving portion of the conveyor belt to reduce stresses on the belt in a vertical shaft. The belt tension-reducing devices can be arranged in a stacked configuration within the vertical shaft.

公开(公告)号：US20240254879A1

公开(公告)日：2024-08-01

申请号：US18424649

申请日：2024-01-26

Applicant: ROBBINS MINING, INC.

Inventor： Bradley Dean Grothen ,  Jay Michael McNeeley ,  Stephen Mitchell Smading

IPC: E21D9/11 ,  E21D9/12

CPC classification number: E21D9/112 ,  E21D9/12

Abstract: A Tunnel Boring Machine (TBM) with a circular cutting profile includes secondary cutterhead components that produce a semicircular-arched tunnel profile for use in underground mining and/or civil construction operations, e.g., for boring in material containing rocks with
Unconfined Compressive Strength (UCS) of up to 200 MPA or stronger. The machine is particularly suited to excavate long access tunnels, mine development drifts, road tunnels, and other types of tunnels that require flat bottom, semicircular-arched profiles. The substantially flat tunnel floor allows immediate and effective use of standard vehicles for material and crew transport as well as other construction and mining activities.

公开(公告)号：US20230257203A1

公开(公告)日：2023-08-17

申请号：US18171240

申请日：2023-02-17

Applicant: ROBBINS MINING, INC.

Inventor： Shirley Donnelly Riffe

IPC: B65G15/60

CPC classification number: B65G15/60 ,  B65G2201/045

Abstract: A belt tension-reducing device is provided, which includes a support member; a pliable central wheel assembly configured to engage a both downwardly and upwardly moving portions of the conveyor belt; first and second outboard roller assemblies positioned to engage the downwardly and upwardly moving portions, respectively. A second effective rolling radius of the pliable central wheel assembly at a contact point with the upwardly moving portion of the conveyor belt can be greater than a first effective rolling radius of the pliable central wheel assembly at a contact point with the downwardly moving portion of the conveyor belt to reduce stresses on the belt in a vertical shaft. The belt tension-reducing devices can be arranged in a stacked configuration within the vertical shaft.

公开(公告)号：US20240383687A1

公开(公告)日：2024-11-21

申请号：US18667922

申请日：2024-05-17

Applicant: ROBBINS MINING, INC.

Inventor： Bradley Dean Grothen

IPC: B65G17/02 ,  B65G17/08 ,  B65G21/22 ,  B65G23/44

Abstract: A laterally articulable belt conveyor assembly is provided. The assembly has a central chain forming a loop extending around a first roller wheel and a second roller wheel, a plurality of elongate slats operably coupled to the central chain and each having rolling members at their lateral ends, a belt operably coupled to each of the plurality of elongate slats, the belt configured to carry excavated muck from a loading end portion to an unloading end portion. The assembly further includes a plurality of guide rail pairs each forming a gap for receiving the rolling members therebetween and directing the plurality of elongate slats along the gap. The guide rail pairs can be articulable from a straight configuration to a curved configuration, where the belt travels in a laterally curved path. The guide rail pairs can be telescoping in length to adjust to the curved configuration.