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：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.