JPH058370Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a waste oil structure for discharging lubricating oil within a transmission case.

[Prior art]

Conventional waste oil plugs of this kind for discharging lubricating oil inside the mission case are tightly screwed into a threaded waste oil hole provided at the bottom of the mission case using a tool such as a spanner.

[Problem that the invention attempts to solve]

Therefore, there is a problem in that a tool such as a spanner is required to remove this tightly screwed waste oil stopper, which is cumbersome to operate.

In addition, in conventional rice transplanters, a float that slides on the field surface is installed below the rice transplanter case, making it difficult to set up the waste oil receiver, resulting in the problem of waste oil accidentally falling onto the float.
In any case, the problem that waste oil work cannot be done smoothly remains unsolved.

[Means to solve the problem]

The present invention was devised to solve the above-mentioned conventional problems, and provides a transmission case waste oil structure that can facilitate oil waste work by using the gear shifter shaft as a waste oil plug. For the purpose of established,
A gasket 3 that closes the through hole 31 is attached to a threaded portion 32 provided on the outer shaft end side of the speed change shifter shaft 22.
3 into which a knob 35 is screwed.

[Effect]

When removing waste oil, you can simply attach and detach the knob 35 screwed into the shaft end of the gearshift shifter shaft 22, without using a wrench or the like to attach or detach the waste oil stopper like a conventional waste oil stopper. It is possible to perform waste oil work using the through hole 31 of the speed change shifter shaft 22. Moreover,
Since the waste oil can be guided and discharged to a position away from the transmission case 15 by the length that protrudes to the outside of the speed change shifter shaft, the waste oil work is further facilitated, and
It is possible to prevent the lower part of the transmission case 15 from becoming dirty with waste oil. Further, by simply providing the speed change shifter shaft 22 at the lower part of the transmission case 15, the conventional waste oil plug can be made unnecessary.

〔Example〕

Hereinafter, the drawings showing the present invention as an embodiment will be explained.

As shown in Fig. 3, an engine 2 is mounted in the front of the rice transplanter 1, which is arranged in the longitudinal direction.
The fuselage is also provided with a left-right axle 3, a transmission case 4 that swings vertically around the axle 3, and a wheel shaft 5 pivotally supported at the rear end of the transmission case 4. A running wheel 6 is fixed to.

Further, a base end of a control handle 7 extending diagonally rearward is fixed to the rear end of the aircraft.
A seedling stand 8 is disposed above the control handle 7 and is configured to move back and forth laterally in the left-right direction. A planting rod 9 is installed on the body below the seedling platform 8 to scrape one seedling's worth of soil from the soiled seedlings (not shown) placed on the seedling platform 8 and plant them. , these are driven from the engine 2 via a transmission mechanism (not shown). Furthermore, a float 10 is disposed below the aircraft body and is disposed in the front-rear direction and slides on the rice field.

A transmission case 15 is disposed on the base end side of the aforementioned control handle 7 and has a built-in scraping amount changing mechanism for changing the lateral feed amount of the seedling platform 8 to increase or decrease the scraping amount by the planting rod 9. It is set up.

As shown in FIG.
A speed change shaft 16 is supported within the speed change shaft 16, and a sliding gear 20 consisting of a large diameter gear 17 and a small diameter gear 18 is rotatably provided on the speed change shaft 16. The lower part of the shifter arm 21, which is fitted in the upper part of the shifter arm 21, is fixed to the inner shaft end of a transmission shifter shaft 22, which is disposed along the lower part of the transmission case 15 and parallel to the axial direction of the transmission shaft 16.

The operation side of the speed change shifter shaft 22 extends outwardly through a shaft support 23 provided in the transmission case 15, and the speed change shifter shaft 22 facing the shaft support 23 has large, medium and small stocks. Stop grooves 24, 25, 26 are provided at three locations that can be set to
The shaft support 22 facing this is provided with a hole that accommodates a ball 27 and a spring 28 that urges the ball 27 into the stop groove of the speed change shifter shaft 22, and the upper part of this hole is hermetically closed by a bolt 29. is,
Furthermore, an O-link 30 is provided to prevent oil leakage.

This speed change shifter shaft 22 is provided with a through hole 31 along the axial direction, and this speed change shifter shaft 22
The outer shaft end side of the screw portion 3 has a larger diameter than the through hole 31.
2, a screw hole of a knob 35 is screwed into this screw portion 32 via a packing 33 that closes the through hole 31, and a rotation prevention protrusion 36 is formed around this knob 35. It is desirable that this speed change shifter shaft 22 be provided in an oil sump recess 37 formed at the bottom of the transmission case 15 so that the amount of residual lubricating oil is as small as possible.

Therefore, during rice planting work, the speed change shifter shaft 2
By pushing and pulling 2 in the axial direction, the amount of lateral feed of the seedling stand 8 can be changed and the amount of scraping by the planting rod 9 can be set to large, medium, or small plants. , the transmission shifter shaft 22 provided at the bottom of the transmission case 15 is used as it is, and the knob 3 is
The waste oil work can be carried out with a simple operation of attaching and detaching the 5, and the waste oil can be disposed of at a position away from the transmission case 15, so it is possible to avoid the float 10 disposed below the transmission case 15. The waste oil can be placed in the same position, and the waste oil receiver can be set independently of the float 10.

[Effect of idea]

In summary, the waste oil structure of the transmission case according to the present invention is such that a transmission shifter shaft is disposed at the bottom of the transmission case, a through hole is provided along the axis direction of the transmission shifter shaft, and a through hole is provided on the outside of the transmission shifter shaft. Because the knob that closes the through hole is detachably provided on the shaft end side that protrudes from the shaft, when working with waste oil,
The shifter shaft can be opened by simply attaching and detaching the knob provided on the outer shaft end of the shifter shaft, without using a wrench to attach or detach the waste oil plug like a conventional waste oil cap. Waste oil work can be done using the through hole.

In addition, the waste oil can be guided and discharged away from the transmission case by the length of the gear shifter shaft that protrudes outside the transmission case, making the waste oil work even easier and preventing the lower part of the transmission case from getting dirty with waste oil. can be prevented. Furthermore, the conventional waste oil plug can be eliminated by simply installing the gear shifter shaft at the bottom of the transmission case.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention,
FIG. 1 is a longitudinal sectional view of the main parts, FIG. 2 is a side view of the transmission case, and FIG. 3 is a side view of the entire rice transplanter. 15... Mission case, 20... Rocking gear, 22... Speed shifter shaft, 31... Through hole, 3
2...Screw part, 33...Putskin, 35...Knob.

Claims (1)

[Scope of utility model registration request] A speed change shifter shaft is disposed in the lower part of the transmission case, a through hole is provided in the speed change shifter shaft along the axial direction, and a knob is provided on the shaft end side projecting to the outside of the speed change shifter shaft to close the through hole. A waste oil structure with a removable mission case.