BIDIRECTIONAL COUNTER

摘要

A bidirectional counter comprising a central gear (1), a drive shaft (2), numeric wheels (3), and a main shaft (4). The drive shaft (2) drives the rotation of the numeric wheels (3) by means of a transmission mechanism; one end of the main shaft (4) is connected to the medium-driven central gear (1) and is driven to rotate by said gear (1); the other end of the main shaft (4) has connected thereto a main bevel gear (5); a left bevel gear (6) and an opposing right bevel gear (7) are mounted on the drive shaft (2); unidirectional bearings (8) having the same orientation are disposed between the left bevel gear (6) and the drive shaft (2) and between the right bevel gear (7) and the drive shaft (2), respectively; and the main bevel gear (5) meshes simultaneously with the left bevel gear (6) and the right bevel gear (7). The present bidirectional counter achieves bidirectional counting and has a simple structure and low cost.