Patent ID: 9738453
Date: 2017-08-22
CPC Classifications: B65G

Claim:
1. An operating tension indicating and adjustment device for an endless chain strand of a chain conveyor, comprising: a tensioning device for generating a pre-tensioning force acting in a first direction of movement of the chain strand; a concave section formed in the chain strand next to an area of a transport section; and a pivoting arm having a fixed point mounted on a shaft and a contact point sliding on the chain strand, the pivoting arm applying a compressive force to the chain strand; wherein the shaft is rotated in a bearing positioned in a frame of the chain conveyor and extends in a second direction substantially perpendicular to the first direction of the movement of the chain strand, wherein the pivoting arm is coupled with a tension indicator displaying an operating tension of the chain strand, wherein the compressive force has a third direction substantially perpendicular to a tangent of the chain strand at the contact point of the pivoting arm, and wherein components of the compressive force on the chain strand on both sides of the contact point take a value of 2-35% of the pre-tensioning force, wherein adjustment of the tension indicator between position switches directly adjusts the compressive force on the chain strand.