The Mechanization of Transport in Vinyl House (VI)

Automatic Operation of the Car for Exclusive Use of Transport

Abstract

Automatic operation of the car for exclusive use of transport becomes a useful method for the reduction of labor in vinyl house.
The author produced two types of automatic operation devices, the trolley car and the battery car. The results of performance test were as follows:
(1) The purposes of automatic operation are automatic starting and automatic stopping of the car. Workers recognize the car stop by the buzzer, and load the harvests on the car or unload the harveste from the car.
(2) The trolley car was equipped with D. C. motor (12V, 144W) for the prime mover. It could be loaded with 50kg (the standard load) and had about 0.35m/s travel speed.
The car equipped with a driving wheel and four supporting wheels, and the driving wheel ran in the guide rail.
(3) The automatic operation device of the trolley car was set between the trolley duct and the rectifier that was the source of electricity. The sauce of electricity of the time switch used in the device was A. C. 100V.
Performace of reset of the time switch was inaccurate when set above 80 second.
(4) The structure of the battery car was the same as the trolley car, but output of the motor equipped was 192W and the capacity of the battery used was 60AH.
Inputs of the motor were 145W and 150W when loaded 0kg and 105kg respectively. Therefore input were independent of the load.
(5) The electric time reley circuit that applied the unijunction transistor and the thyristor war used in the automatic operation device of the battery car. The stoppage time could be varied from 30 second to 150 second by changing the resistance of the circuit from 15kΩ to 85kΩ by 8 stepes.
Sufficient results were obtained for the performance of the time reley by the experiment.
(6) Times of the continuous automatic operation of the battery car were 3 hours when it was loaded 45kg, and the value of its application was recognized.