Ride-on rice transplanter or ride-on direct seeder

A technology of live broadcast machine and rice transplanter, which is applied in the direction of steering mechanism, vehicle parts, steering tie rod, etc., which can solve the problems of large impact load, increase the weight of gearbox, etc., and achieve improved support strength, reduced uneven wear, and reduced possibility Effect
CN105984493BActive Publication Date: 2020-10-16KUBOTA CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
KUBOTA CORP
Publication Date
2020-10-16

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Abstract

Provided is an operating vehicle. The operating vehicle is provided with an arm support shaft (45) arranged at the bottom fo a gearbox (3). The arm support shaft performs swing operation on a connecting rod arm (44). Due to the fact that a small gear (42) arranged at the lower part of a steering shaft (41) in the gearbox (3) is engaged with a steering gear (46) arranged in the arm support shaft (45) in the gearbox (3), linkage between a rotary shaft (41) and the arm support shaft (45) is achieved. The steering shaft (41) is supported between upper and lower positions of the small gear (42) through a first bearing part (43d) at the lower part and through a first bearing part (43u) at the upper part. The first bearing part (43d) is arranged on the lower side of the small gear (42). The first bearing part (43u) at the upper part is arranged on the upper side of the small gear (42) at the lower part of inner space of the gearbox (3). The operating vehicle is utilized so that endurability of a power transmission structure between the steering shaft and the connecting rod arm is improved.
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Description

technical field

[0001] The invention relates to a ride-on rice transplanter or a ride-on direct seeding machine, which has a steering shaft and a connecting lever arm, and the steering shaft is supported with its lower end side inserted into a gearbox; the connecting lever arm is provided at the bottom of the gearbox. side. Background technique

[0002] As described above, the technique described in the following [1] is known as a work vehicle in which a steering shaft and a link arm are supported in a transmission.

[0003] [1] That is, in the transmission, the upper end side of the steering shaft is supported by a torque generator fixed to the upper portion of the transmission, and the lower end side of the steering shaft is supported by a ball bearing provided on the bottom wall of the transmission.

[0004] In addition, at a position slightly above the portion supported by the ball bearing, the pinion gear included in the steering shaft meshes with the sector gear inclu...

Claims

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