Engagement chain type driving device

Abstract

The invention relates to an engagement chain type driving device including a pair of driving sprockets, which rotate positively and reversely in opposite directions about a pair of rotating shafts, a pair of engagement chains, which engage with each other by the pair of driving sprockets so to be integrated together, and a driving source, which drives the pair of driving sprockets, wherein the engagement chain includes inner tooth plates and outer tooth plates, which each include buckling limiting flat surfaces, the inner tooth plates and outer tooth plates being brought opposite to each other and into contact with each other when the engagement chains are integrated by the pair of driving sprockets, such that the flat surfaces hold the chain engagement position.

Description

technical field [0001] The present invention relates to a driving device used in manufacturing equipment in various manufacturing fields, conveying equipment in the transportation field, nursing equipment in the medical and welfare field, stage equipment in the art field, etc. The chain is an intermeshing chain drive device that serves as the drive medium for the forward and backward motion. Background technique [0002] Conventionally, as a drive device, there is a drive device that uses a pair of meshing chains that engage with each other to move up and down integrally, so-called chuck chains, to move a workpiece such as a heavy object up and down (for example, refer to Patent Document 1). [0003] In the meshing chain 550 used in this conventional driving device, various studies have been carried out on the shape of the hook surface 555b formed on each link piece 555, the distance between the pins and the distance between the bushes, and the like. The area on the opposit...

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Problems solved by technology

[0006] In addition, regarding the above-mentioned problem that the bending strength of the pair of engaging chains 550 decreases due to the gap between the bending limiting flat surfaces 555a, as described in Japanese Patent No. 3370928, the ground is installed as the installation surface. In the case of using the engaging chain 550 with the driving device installed, the effect can be reduced by eliminating the gap generated between the bending limiting flat surfaces 555a due to the weight of the load supporting member 510 and the workpiece acting on the pair of engaging chains 550. However, when the engaging chain 550 is used for a drive device in the form of a suspension installation installed on the ceiling surface or a drive device in the form of cantilever support installed on a vertical wall surface, the above-mentioned problems will become apparent.

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