Work forward and fast reverse mechanism controlled by spring swing rod

Abstract

The present invention relates to a working feed quick return motion mechanism controlled by a spring oscillating bar. The mechanism comprises a driving mechanism and a toggling mechanism which are connected through yoke bars, the driving mechanism comprises a driving gear meshed with a first gear and a second gear, the driving gear is arranged in a sliding manner on a driving shaft, the first gear and the second gear are opposite in rotating direction, the toggling mechanism comprises a shifter lever in sliding arrangement, two yoke bars are arranged on the shifter lever, one end of the driving shaft is provided with a threaded rod, a thread sleeve connected with a bent bar sleeves the threaded rod through threads, the oscillating bar is provided with a first rotating shaft, a second rotating shaft and a third rotating shaft in turn, is connected with the shifter lever through the first rotating shaft and with a chain bar through the second rotating shaft, and rotates through the third rotating shaft, two ends of a chain are connected with a free end of the chain bar and a free end of the bent bar, the free end of the chain bar and the free end of the bent bar can be abutted together, and one end of a spring is fixedly connected onto the oscillating bar at the second rotating shaft while the other end of the spring is fixedly connected onto a fixing block.

Description

technical field [0001] The invention relates to a transmission conversion mechanism, in particular to a work-forward and fast-reverse mechanism controlled by a spring swing bar. Background technique [0002] The transmission conversion mode of modern power mechanism is mostly carried out by means of frequency converter to control the motor. The frequency converter controls the speed of the motor and controls the steering of the motor, which makes the speed output of the motor to the transmission mechanism extremely flexible. However, the common frequency converter has insufficient voltage compensation for the motor when outputting low frequency, and the torque boost of the motor is not enough, resulting in a decrease in the output torque of the motor and unstable load capacity. Especially in the process of frequent start, stop, and reverse at low speeds, ordinary frequency converters do have shortcomings, and the mechanical transmission mechanism needs to be redesigned to ac...

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