JP2554204Y2 - Paddy field vehicle frame structure - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paddy field working vehicle such as a rice transplanter, and more particularly to a frame structure of the vehicle.

[0002]

2. Description of the Related Art Generally, a riding rice transplanter has a traveling body supported by a front wheel and a rear wheel. The traveling body has an engine mounted on a front part, and a seat disposed on a rear part.
And a working machine such as a planting device is mounted behind it.

[0003] In the traveling body of a riding rice transplanter as described above, the body frame is composed of two front and rear frames which are arranged substantially in parallel in the front and rear direction of the body and spaced apart from each other in parallel. Vertical stays are respectively provided on the front and rear frames, and a frame cover is integrally connected to upper ends of the vertical stays, and a seat is mounted on the frame cover.

[0004]

However, in the above-mentioned frame structure, the rigidity in the vertical and horizontal directions is not sufficient, and in particular, supporting the steps requires a shape and strength corresponding to the load. Further, there is a problem with a shaft for pivotally supporting a link for mounting a working machine and a stay for supporting a seat.

[0005] In view of the above, according to the present invention, a curved portion is provided in a part of the pipe of the frame structure, and the frame structure is modified.
An object of the present invention is to provide a frame structure of a paddy field working vehicle that solves the above-mentioned problem by increasing the rigidity of the frame structure.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and is supported by a front wheel (2) and a rear wheel (3), and has a seat (7) at a rear portion thereof. In a frame structure of a paddy field working vehicle (1) having a traveling machine body (5) having a working machine (10) mounted on the rear side thereof, the frame structure (F) has a left and right outer side extending in the machine body front-rear direction and Inner frame member (13, 1
4), and the rear portion of the outer frame member (13) is curved upward (13a), and the rear portion of the inner frame member (14) has a seat support stay ( 15) and fix the sheet support stay (1).
5), the seat (7) is provided, and the shafts (8c, 8d) for pivotally supporting the links (8a, 8b) for mounting the working machine (10) are fixed. ), The top (13a ') of the curved portion is moved to the horizontal stay (19).
And the seat support stay (15) is fixed to the lateral stay (19).

[0007]

According to the above construction, the working machine (10) can be reliably supported, and the seat (7) can be firmly supported.
Further, the strength of the step (22) supported by the frame members (13, 14) is also improved. Particularly, the strength of the rear step surface (22c) on the side of the seat, which is supported by the curved portion (13a) of the outer frame member (13), is improved.

[0008]

[Effect of the invention] As described above, according to the invention,
The seat support stay (15) is connected from the lower inner frame member (14) to the seat support member (17) via the horizontal stay (19), and the horizontal stay (19) is connected to the curved portion (13a) and the seat support. Since the stay (15) is connected, the vertical and horizontal rigidity of the entire frame is enhanced and the weight is reduced.

Further, the strength of the step (22) is increased by strengthening the frame structure (F), and the body cover (23) having the step (22) can be made lightweight. In particular, the strength of the rear step surface (22c) on the side of the sheet placed on the curved portion (13a) has been improved.
The worker can easily replenish the seedlings by moving from the step front part (22a) to the sheet side part (22b).

When the position of the frame member (13) is set close to the side surface of the wheel (3), the wheel (3) can be muddy by the curved portion 13a, and it is not particularly necessary to provide a scraper for muddying. , Reducing costs. At this time, the frame member bending portion (13a) is attached to the wheel (3).
Crosses diagonally, the wrap area is small and the mud does not adhere to the frame member (13), and there is a sufficient space for removing mud in the vicinity of the wheel (3), so that mud can be easily removed.

The reference numerals in parentheses above are for comparison with the drawings, but do not limit the configuration of the present invention.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, the riding rice transplanter 1 has a traveling body 5 supported by front wheels 2 and rear wheels 3.
The traveling body 5 is provided with an engine 6 at a front end thereof and a driver seat 9 having a seat 7 at a rear portion. Further, a link 8 is provided behind the traveling body 5.
The planting unit 10 is supported via a and 8b so as to be able to move up and down freely. The planting unit 10 is provided with a large number of planters 11..., floats 51 and seedling rests 12. A hydraulic cylinder device 52 is disposed between the rear end portion of the traveling machine body 5 and the bracket 4 fixed to the upper link 8a. The hydraulic cylinder device 52 is planted based on the expansion and contraction of the hydraulic cylinder device 28 by the hydraulic control valve. The attachment 10 moves up and down.

As shown in FIGS. 2 and 3, a frame structure F constituting the traveling body 5 has a square pipe 1 as an outer frame member on the left and right outer sides extending in the longitudinal direction of the body.
3, 13 are provided, and square pipes 14, 14 are provided as inner frame members inside thereof. Further, the rear portion 13a of the outer square pipe 13 is curved upward. Further, a seat support stay 15 is fixed to a rear portion of the inner square pipe 14 so as to face upward. At the top of the seat support stay 15, a seat support pipe 1 is provided.
7 is fixedly provided, and the sheet 7 is provided thereon. Furthermore,
The shafts 8c and 8d for pivotally supporting the links 8a and 8b for mounting the planting portion 10 are fixed to the seat support stay 15. Further, a horizontal stay 19 made of a square pipe is fixedly connected to the top 13b of the curved portion 13a of both outer square pipes 13, and the horizontal stay 19 is also fixed to the seat support stay 15.

Further, the left and right outer pipes 13 are asymmetrical in the front, and the left pipe is long and bent in the lateral direction to form a front horizontal frame portion 13d. The square pipe forms an auxiliary lateral stay portion 13e that is shorter than the left-side square pipe and short after bending. The front horizontal frame portion 13 d and the auxiliary horizontal stay portion 13 e are connected by a vertical pipe 31, and a crosspiece pipe 32 is connected between the pipe 31 and the left-sided square pipe 13. 33. The rear ends of the left and right outer square pipes 13, 13 are connected by an arched frame 16, a rear axle 35 is connected, and horizontal frames 36, 37 are connected to a central portion thereof. And step 3 for the operator getting on and off each pipe 13
9 is fixed.

On the other hand, at the rear end of the engine mount 33, the plate 40 extends over the left and right outer square pipes 13, 13.
The plate 40 fixes and supports the rear side surface of the transmission case 41, and the front ends of the left and right inner square pipes 14, 14 are fixed. Also,
A sheet support stay 15 erected on the square pipe 14
The sheet support pipes 17, 17 at the upper end are curved 17a so that the rear part expands outward, and the front part thereof is connected by a horizontal plate 42, and the sheet 7 is supported at the plate 42 part. Furthermore, left and right inner square pipes 14, 14
The rear end is connected to a plate 43 for fixing the central front side surface of the rear axle 35, and the arc-shaped frame 16 is fixed to the rear end.

Then, as shown in FIGS. 4 to 6, the body cover 23 is placed on the frame structure F. The body cover 23 is integrally formed of synthetic resin, and has a step portion 22, a seat portion 25, and an engine portion 2.
6. The step portion 22 extends outside the driver's seat foot rest surface 22 a, which is a flat surface extending right and left in front of the seat portion 25, and extends on both sides of the front step surface 22 b extending on both sides of the engine portion 26 and the seat portion 25. It has a rear step surface 22c. The seat 25
Is formed so as to bulge upward, and a hole 26b is formed in the engine portion 26 by a rising edge 26a. In the engine section 26, the engine 6 and the like protrude upward from the hole 26b, and the hood 27 is placed so as to cover the engine 6 and the rear cover 28 is placed so as to cover the rear. . Further, a bumper 29 is attached to the front of the body cover 23, and a center marker 30 is attached to the center of the bumper 29 so as to extend and contract so as to protrude upward.

On the other hand, the horizontal frame 36 projects outward from the left and right outer square pipes 13 in plan view, and a spare seedling frame 46 and a trace marker 47 are fixed to the projecting portion via a bracket 45. I have. The spare seedling frame 46 extends in a U-shape in the left and right lateral direction of the front step surface 22b.
Is placed.

The outer square pipes 13 and 13 extend from the front step surface 22b to the rear step surface 22c.
Are located, and the strength of the step surface is high.
In particular, as shown in FIG. 5, the rear step surface 22c rises obliquely rearward, but an intermediate portion thereof is supported by the curved portion 13a of the outer square pipe, and an upper end portion thereof is supported by the seat. It is supported by the curved portion 17a of the pipe 17, and has sufficient strength to withstand even an operator riding. Thereby, the operator can move the front step surface 2
The spare seedling is taken out from the spare seedling stand 21 in a posture in which one side is put on 2a, and it is moved by one foot to the rear step surface 22c.
It can be supplied to the seedling rest 12 of the planting section 10 while being placed on the top.

As shown in FIG. 1, the rear wheel 3 is disposed slightly outside the curved portion 13a of the outer square pipe 13. Therefore, when the riding rice transplanter 1 travels in the paddy field and the mud adheres to the rear wheel 3 and is carried around, the curved portion 13a close to the rear wheel functions as a scraper and adheres to the rear wheel 3. Scraping off mud. At this time, since the curved portion 13a crosses the lug portion of the rear wheel 3 obliquely, the mud scraping effect is high, and only the outer square pipe 13 is present near the rear wheel 3, so that the curved portion 13a is scraped off. There is enough mud discharge space.

In this embodiment, a square pipe is mainly used as a frame member, but a circular pipe or a shape member may be used. Further, in the seat support pipe 17, the sheet support portion is configured by the plate 42, but this may be configured by bending one pipe.

[Brief description of the drawings]

FIG. 1 is an overall side view showing a riding rice transplanter to which the present invention is applied.

FIG. 2 is a plan view showing the frame structure.

FIG. 3 is a side view showing the frame structure.

FIG. 4 shows a state in which a body cover is placed on a frame structure.

FIG. 5 is a side view thereof.

FIG. 6 is an exploded perspective view showing the body cover.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Paddy field working vehicle (riding rice transplanter) 2 Front wheel 3 Rear wheel 5 Running body 7 Seat 8a, 8b Link 8c, 8d Axis 10 Work machine (planting part) 13 Outer frame member (square pipe) 13a Curved (curved part) 13a 'Top 14 Inner frame member (square pipe) 15 Seat support stay 19 Side stay 22 Step (part) 22a Driver's seat footrest 22b Front step surface 22c Rear step surface 23 Body cover F Frame structure

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Yukio Kato 667, Iya-cho, Oaza, Higashi-Izumo-cho, Yatsuka-gun, Shimane Prefecture 1 Mitsubishi Agricultural Machinery Co., Ltd.

Claims (1)

(57) [Scope of request for utility model registration] 1. A frame structure of a paddy field working vehicle which is supported by front wheels and rear wheels, has a seat at a rear portion thereof, and has a traveling machine body equipped with a working machine behind the frame, wherein the frame structure includes: It has left and right outer and inner frame members extending in the longitudinal direction of the fuselage, and a rear portion of the outer frame member is curved upward, and a seat support stay is provided on a rear portion of the inner frame member so as to face upward. And the seat supporting stay is provided with the seat, and a shaft for pivotally supporting a link for mounting the working machine is fixed, and further, the tops of the curved portions of the outer frame members are connected by a horizontal stay. And a frame structure for a paddy field working vehicle, wherein the seat support stay is fixed to the horizontal stay.