Self-locking structure The self-locking device of the operating mechanism traditionally uses a steel ball self-locking structure, which is easy to wear. The transmission adopts a sector-shaped self-locking block and a self-locking pin shaft for self-locking, and uses a sector-shaped self-locking block and a housing to limit the position. Interlocking structure Interlocking is achieved by using an interlocking fork. When in a certain gear neutral position, only the shift block of the gear is aligned with the groove of the interlock fork, and the shift block on the other shift fork shaft is just blocked by the inner wall of the interlock fork. , Is locked in the neutral position, so as to achieve interlocking, the interlocking effect is good. Reverse lock Structurally, to ensure that the reverse gear is engaged, it is necessary to overcome the greater spring force and the spring force of the high and low gear positioning ring to prevent accidental engagement of the reverse gear. Double H valve When the interlocking fork moves with the shift shaft to select the gear, it drives the spherical sliding column of the double H valve to realize the conversion of high and low gears.The adopted double H valve of the new structure effectively solves the defect of high leakage failure rate of the double H valve of other products.