JPH0723343Y2 - Step support device for riding mobile agricultural machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Use The present invention relates to a riding mobile agricultural machine such as a riding rice transplanter, a riding fertilizer applicator, or a riding sowing machine, and particularly to a step supporting device thereof.

(B) Conventional technology Conventionally, a riding mobile agricultural machine in which an engine is mounted in the front part of a driving step, a driver's seat is provided in the rear part, and rear steps are arranged on both sides of the driver's seat, the rear step is the step of the driving step. It was attached to the main frame separately from the frame.

(C) Problems to be solved by the invention Since the riding mobile agricultural machine has the step frame and the rear step as separate bodies, and these are separately fixed to and supported by the main frame using a number of brackets, The mounting structure is complicated and the manufacturing and assembling are expensive and expensive, and the driver may operate or perform work in either the driving step or the rear step. Regardless, it was necessary to give sufficient supporting strength separately.

(D) Means for Solving the Problems The present invention is a riding mobile agricultural machine in which an engine is mounted at the front of a driving step, a driver's seat is provided at the rear, and both lower sides of the driver's seat are covered with a rear cover. , A step frame having a substantially horizontal upper surface is provided, operation steps are overlapped and mounted on the step frame, the front part of the rear step is fixed to the rear part of the step frame, and the rear part is supported by the main frame. As a result, both the step frame and the rear step serve as the other supporting member to solve the above-mentioned problems.

(E) Action The rear part of the step frame is supported by the rear step, and the front part of the step frame is supported by the main frame, so the supporting structure of the step frame itself is simplified, and the rear step uses the front part as the step frame. The rear step is supported by the main frame, and the rear step support structure is also simplified.

Then, while the driver is driving in the driving frame, the rear step supports a part of the load integrally with the driving frame, and conversely, when the driver stands in the rear step, The frame shares and supports a part of the load.

(F) Embodiment An embodiment of the present invention will be described with reference to the riding rice transplanter shown in the drawings.
The engine is mounted on the front engine frame 3, and rear wheels 6 and 6 are mounted on the rear axle extending from the rear case 5 mounted on the rear portion of the main frame 1 to the both sides, and the rear wheels are mounted on the rear side. A planting device 8 is mounted so as to be able to move up and down via a three-point link 7. The transmission mechanism in the transmission case 2 transfers the power of the engine to the front wheels 9 and 9 and the propeller shaft 1.
It is distributed to the rear case 5 in which 0 is interposed, the planting device 8, and the like.

And a bonnet covering the engine and its accessories
The front side step 11a is integral with the front side step 11a. The front opening 12 at the lower front end of the front side step 11a is fitted to a shaft rod 13 fixed to the front part of the engine frame 3, and the rear part is engaged with a panel rear cover 4 described later. Since it is detachably locked,
When the bonnet 11 is rotated forward around the shaft rod 13, the entire engine room can be opened as shown by the chain line in FIG. 1, and when the bonnet 11 is lifted in this state, it can be easily removed. .

As shown in FIG. 3 (b), the panel rear cover 4 is mounted on a horizontal crosspiece 15c which is fixedly installed between the front portions of the vertical frames 15a, 15a of the step frame 15 via a spacer 4a and a screw 4b.
It is detachably fastened at two places on the left and right.

Further, the step frame 15 is a left and right vertical frame 15a,
It is configured by integrally connecting 15a with a horizontal frame 15b, the middle part is fixed to the front end of the main frame 1 by a bracket 17, and the front part is screwed to the front axle case 16 by a bracket 18 hanging from the left and right. On the front, back, left and right of the lower surface of the operation step 20, downwardly U-shaped locking members 21 ... Composed of elastic steel plates are fixed. Frame 15
The width is slightly wider at the upper part than a, the lower part is a little narrower, and the lower end is expanded outward, so the anti-vibration rubber 19 (notch part at the part corresponding to the locking tool 21 ... After the operation step 20 is pushed in from above so that the notch of the front end fits in the vicinity of the spacers 4a, 4a, the locking tool 21 ... As shown in FIG. 6, the vertical frame 15a is fitted and the lower part is engaged and fixed to the corners on both sides of the lower part of the vertical frame 15a, and the rear end is received by the front ends of rear steps 33, 33 described later. ,
When the driving step 20 is lifted, the locking tools 21 ... Disengage from the vertical frame 15a.

Even when the rear cover 35, which will be described later, located at the rear part of the operation step 20 is formed integrally with the operation step 20, or when the front side steps are formed in series at the front part of the operation step 20, the operation step 20 is performed together with them. It can be easily attached / detached to / from the step frame 15, and when the locking tool 21 is fixed to the lower surface of the operation step by setting the fitting groove in the lateral direction so as to be fitted to the horizontal rail 15c, the operation step 20 is completed. It is possible to prevent lateral and longitudinal displacement.

A rubber mat 22 is laid on the operation step 20.

A seat frame cover 24 is fixed on a seat frame 23 standing upright on the rear portion of the main frame 1, and a driver seat 26 is pivotally mounted on a front portion of a bracket 25 protruding forward from the seat frame cover 24. As shown in FIG. 4, both sides of the seat frame cover 24 are gently inclined downwards, and the various operation levers, For example, the oil pressure sensing lever
28, through which the planting lever 30 and the like are inserted and guided, and lever guide grooves 31 ... Having a locking step portion on the side are formed.

Further, the rear steps 33, 33 have their front ends welded to the rear ends of the left and right vertical frames 15a, 15a, and the lateral frames 32, 32 projecting outward from the seat frame 23 integrated with the in-frame 1 toward the rear part. The rear part is fixed to the end part of each so that the rear part becomes higher. That is, the rear part of the main frame 1
The front support members of the rear steps 33, 33 become the front support members of the rear steps 33, 33, and the front support members of the rear steps 33, 33 become the rear support members of the main frame 1, so that the supporting means can be simplified and the other loads are shared. And support.

Further, a rear cover 35 that covers both sides of the seat frame 23, an upper rear side, and a lower front side has a square shape in a plan view, and has a pair of left and right pipes 36, 36 at the front lower portion thereof, and the main frame 1 Lateral fulcrum pins 39, 39 are fixed to the brackets 38, 38 that are integrated with the brackets 37, 37 that stand upright, and the pipes 36, 36 can be freely inserted into and removed from the fulcrum pins 39, 39 and can be rotated. As shown in FIG. 1, the driver's seat 26 is rotated forward so that the steering handle 47 leans against the seat frame cover 24 and is fixed to the seat frame cover 24. When the rear cover 35 is rotated forward, the upper portion and side portions of the lever support portion and the like can be opened. In this state, the pipes 36, 36 are pulled out from the fulcrum pins 39, 39 by moving laterally. The rear cover 35 can be removed. 34a is a grip portion of the operation lever.

As described above, when the rear cover 35 is pivotally opened or detached,
The operation levers such as the oil pressure sensing lever 28 and the planting lever 30 are
The levers are held in the lever guide grooves 31 of the seat frame cover 23, respectively, and when the rear cover 35 is disengaged, the operation lever does not require the operation of attaching and detaching the grip portion 34a.

Also, if the rear cover 35 is returned to the normal posture shown by the solid line,
Since its upper portion is bent inward as shown in FIG. 4, it is easily positioned by being guided by the descending inclined surface and centered on the outer stepped portion 24a of the seat frame cover 24. Polymerize while being treated. Furthermore, the pipe 3
Since the intervals of 6,36 are narrower than the intervals of the fulcrum pins 39,39, in FIG. 4, the left pipe 36 is fitted into the tip of the corresponding fulcrum pin 39, that is, one of them is positioned. Then, the pipe 36 on the right side can be easily fitted into the fulcrum pin 39 on that side. Further, since the edge rubber 40 is fitted and fixed to the bent portion at the upper portion of the rear cover 35, the overlapping portion is well adhered to prevent dust and rainwater from flowing in and muddy water from spouting. You can

Further, even when the rear cover 35 is integrally formed with the operation step 20 or the front side step 11a is formed in series at the front part thereof and these are attached and detached, the levers on both sides of the seat frame cover 24 are also provided. The guide groove 31 holds the operation lever, and when attaching / detaching, it is not necessary to attach / detach the grip portion of the operation lever.

In the drawing, 41 is a fertilizer tank, and the ribs in the vertical direction protruding from the rear end of the fertilizer tank are bolted to brackets 42, 42 fixed to the front ends of the vertical frames 15a, 15a. The lower surface of is supported by a dish-shaped receiving frame 43 fixed to the engine frame 3. 44 is the lifting step, 45
Is a main gear shift lever, and 46 is a sub gear shift lever.

(G) Effect of the invention Since the invention is constructed as described above, the step frame
The rear portion of the rear step 33 is supported by the rear step 33, and the front portion of the rear step 33 is supported by the step frame 15. Consequently, the supporting device of the step frame 15 and the supporting device of the rear step 33 can be simplified. Therefore, the cost for manufacturing and assembling the parts can be significantly reduced.

When the driver is driving in step 20, the weight is shared not only by the step frame 15 but also by the rear step 33, and when the driver moves to the rear step 33, the step frame 15 Also supports part of the load by sharing it, so it is safe to reduce the strength of the support member, and from this point as well, it is possible to reduce the weight of the machine and to reduce the cost.

[Brief description of drawings]

The drawings show an embodiment of the present invention. Fig. 1 (a) is a side view of a riding rice transplanter, Fig. 1 (b) is a side view of a bonnet pivot portion, and Fig. 2 is a view of the riding rice transplanter. FIG. 3 (a) is a side view of a driving step and a rear cover, FIG. 3 (b) is a sectional view of a panel rear cover mounting portion, and FIG. 3 (c) is a sectional view of a driving step rear supporting portion. Fig. 4 (a) is a sectional view taken along the line AA of Fig. 1 (a), and Fig. 4 (b).
FIG. 5 is a sectional view of a rear support portion of a rear cover, FIG. 5 is a perspective view of a step frame and a rear step, and FIG. 6 is a transverse sectional view of the same. 1 ... Main frame, 8 ... Planting device, 11 ... Bonnet, 13 ... Axle, 15 ... Step frame, 15a ...
Vertical frame, 20 …… Operating step, 21 …… Locking device, 23…
… Seat frame, 28 …… Oil pressure sensing lever, 30 …… Planting lever, 33 …… Rear step, 35 …… Rear cover, 39…
... fulcrum pin

Claims (1)

[Scope of utility model registration request] 1. A riding mobile agricultural machine in which an engine is mounted in the front part of a driving step 20, a driver's seat 26 is provided in the rear part, and both lower sides of the driver's seat 26 are covered with a rear cover 35. A substantially horizontal step frame 15 is provided, and the operation step 20 is superposed and mounted on the step frame 15, the front part of the rear step 33 is fixed to the rear part of the step frame 15, and the rear part is attached to the main frame 1. A step support device for a riding mobile agricultural machine, which is characterized in that