Pipe chain machine tensioner

Abstract

The invention discloses a tensioning device of a tube chain machine. The tensioning device comprises a tension sprocket mechanism, and a tension driving mechanism used for providing tensioning force for the tension sprocket mechanism, wherein the tension sprocket mechanism comprises a tension sprocket which is matched with a main shaft, two ends of the main shaft are fixed on a frame structure, at least a local part of the frame structure is provided with a sliding plate or sliding block structure, and under the driving of the tensioning force, the tension sprocket mechanism can be moved freely by the sliding plate or sliding block structure along at least one fixed slideway or slide rail. The tension driving mechanism is preferably selected from a cylinder driving mechanism and / or a counter weight driving mechanism. Preferably, the tensioning device also comprises an alarm device used for monitoring and warning chain fracture. The tensioning device has a firm and reliable structure, the displacement of the tension sprocket is completely along a straight line, chain falling and ununiform stress of a chain and the sprocket can not be caused, the displacement space of the tension sprocket is larger, the applicability is stronger, and the damage on other components of a conveying device when the chain is fractured can also be effectively avoided.

Description

technical field [0001] The invention relates to a pipe chain machine, in particular to a pipe chain machine tensioning device. Background technique [0002] The pipe chain conveyor is currently a relatively good conveying machine that can be used for bulk material (powder or granular) conveying. It has low energy consumption, little damage to materials, and good material applicability. It can be widely used in various special materials, such as abrasive materials and materials with poor fluidity. see figure 1 , The pipe chain conveyor is composed of a cyclically running chain that circulates in the pipe, and its two ends are the driving end and the tensioning end. The purpose of tensioning is mainly to absorb the shrinkage or elongation of the chain due to traction, thermal expansion and contraction, etc., and to avoid chain breakage due to overload. Generally speaking, the tension of the chain in the use of the tube chain conveyor is the key to whether the conveyor can w...

AI Technical Summary

Problems solved by technology

The disadvantages of this scheme are: the tensioning range is small (that is, the displacement of the tensioning sprocket is small), the tensioning force is not constant, and it is impossible to provide a constant force as the displacement changes.

Another defect is that the tension force provided by the spring is very limited. When the traction force reaches a certain level, the spring will be compacted and can no longer provide the follow-up displacement of the tensioning sprocket.

In this case, two potential risks arise: one, the chain can come loose and cause it to fall off the sprocket, and two, the chain can be pulled due to overtightening

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