Conveyance system

Abstract

The purpose of the present invention is to provide a conveyance system and a rack, the conveyance system being configured only by a simple mechanical structure and causing no malfunctions, and the rack being able to reliably and sequentially engage with / disengage from a plurality of pinions without being stopped or damaged, while shock, vibration, noise or the like is suppressed even if the pinions differ in phase and speed or are shifted in phase by temperature changes. The rack (120) comprises: a body portion (121) which is provided with a plurality of fixed rack teeth (122) in the center; and a movable portion (123) which is provided with movable rack teeth (124) that are continuous with at least one end of the fixed rack teeth (122). The movable portion (123) is supported so as to be rockable about a support shaft (125) which is provided further forward in the movement direction than the position where the movable rack teeth (124) of the movable portion (123) are located.

Description

technical field [0001] The present invention relates to a conveyance system in which a pinion is engaged with a rack provided on a movable body such as a conveyance cart, and the movable body such as a conveyance cart is moved by rotation of the pinion. Background technique [0002] In a transport system for transporting a moving body such as a transport trolley, it is known that a driving unit is provided on the moving body for moving, a driving unit is provided on the side of the transport road, and a plurality of moving bodies are connected for traction, engagement, and detachment from the movement. Various conveying systems such as chains. [0003] For example, a conveyance system is known in which the automobile body and the like are held on a conveyance trolley, which is a moving body, and the conveyance trolley is conveyed to each process such as painting and drying in order to paint the automobile body and the like. , a rack is set on the conveying trolley, a pinion...

AI Technical Summary

Problems solved by technology

[0004] In the conveying system using such a rack and pinion combination, since a plurality of pinions are arranged on the side of the conveying road, the rack installed on the conveying trolley is sequentially engaged and disengaged from the plurality of pinions, while the prescribed Therefore, if there is a deviation in the phase and speed of the rack teeth and pinion teeth when mating occurs, dust may be generated at the same time as collisions, vibrations, noises, etc., and in the worst case, there may be The rack and pinion are damaged or unable to cooperate and stop

[0005] In particular, when the transfer system is used in processes such as welding and drying, even if the rack teeth are aligned with the pinion teeth when the pinion is installed, the high-temperature furnace itself will expand and contract due to large temperature changes. The pitch of the pinion gear assembled by this expansion and contraction also expands and contracts, and phase deviation cannot be avoided.

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