JPH1014337A - Airframe structure of riding rice transplanter - Google Patents

Abstract

(57) [Summary] [Problem] To rationally increase the mounting strength of a transmission case and the rigidity of a front frame. SOLUTION: A transmission case 35 and a front frame 38 in a U-shape in a plan view surrounding the transmission case 35 from the front and both right and left sides are connected to a front portion of a body frame 11, and are mounted on the transmission case 35. The engine is mounted and connected, and a support member 40 is installed over the front side 38A of the front frame 38 and the transmission case 35,
A battery mounting base 42 is provided on the support member 40.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a body structure of a riding type rice transplanter.

[0002]

2. Description of the Related Art In today's riding rice transplanters, a configuration is generally adopted in which reserve seedling rests are arranged on the left and right front portions of an operating unit.

[0003] A boarding passage is formed between the engine arranged at the front part and the left and right spare seedling rests, and the airframe is positioned so that the front part abuts the ridge, so that the ridge is formed. Numerous configurations have been adopted for facilitating movement to and from the driving unit.

Focusing on the above points, as a result of research, the present inventor has found that a transmission case and a U-shaped front frame which surrounds the transmission case from the front and both left and right sides are provided at the front of the body frame. And an engine structure was proposed in which an engine was mounted on the transmission case.

In the case of this airframe structure, the spare seedling rest is mounted on the front frame by mounting the spare seedling rest on the front frame, and a boarding step for closing a gap between the engine and the front frame from above is provided. And the passage configuration for boarding can be realized.

[0006]

SUMMARY OF THE INVENTION The present invention is an improvement of the above-mentioned airframe structure, and an object thereof is to rationally increase the mounting strength of a transmission case and the rigidity of a front frame.

[0007]

The features, functions and effects of the first aspect of the present invention are as follows.

(Characteristic) A transmission case is connected to a front portion of the body frame, and a front frame having a U-shape in plan view surrounding the transmission case from the front and both left and right sides, and an engine is mounted on the transmission case. In this connection, a supporting member is provided over the front side of the front frame and the transmission case, and a mounting base for a battery is provided on the supporting member.

(Operation) According to the first aspect of the present invention, since the supporting member is provided over the front side of the front frame and the transmission case, the front side is connected to the transmission case via the supporting member. While the rigidity of the front frame can be increased, the attachment strength of the transmission case can be increased by connecting the front case to the front side of the transmission case via a support member.

In addition, attention is paid to the fact that the supporting member has high rigidity in strongly connecting the front side portion and the transmission case in order to increase the rigidity of the front frame and the mounting strength of the transmission case. Since the mounting member for the battery is provided on this supporting member, there is no shortage in the strength required for mounting and supporting the battery, and the battery can be reliably supported by this supporting member. It is only necessary to use a small battery having a strength enough to position the battery.

(Effects) Therefore, according to the first aspect of the present invention, the structure of the transmission case can be simplified by simply providing the support member, and the mounting strength of the transmission case and the rigidity of the front frame can be increased. By using the member for the mounting portion of the battery mounting base, the support member can be made multifunctional.

According to the second aspect of the present invention, the features, actions,
The effects are as follows.

(Features) In the first aspect of the present invention, the support member is connected to the transmission case via a bracket, and a lower end portion of a column of a spare seedling rest provided on the front left and right of the body is fixed to the bracket. It is in the point that has been.

(Operation) According to the second aspect of the present invention, one bracket doubles as a bracket for attaching the support member to the transmission case and a bracket for attaching the column of the spare seedling rest.

(Effects) Therefore, according to the second aspect of the present invention, the mounting of the supporting member to the transmission case and the mounting of the support for the spare seedling rest can be achieved by sharing the members, and the structure can be simply realized. .

According to the third aspect of the present invention, the features, actions,
The effects are as follows.

(Features) In the first and second aspects of the present invention, a step for covering the engine with a hood and closing a gap between the engine and the front frame from above is provided. The steps are connected in a protruding manner from the lower end of the bonnet, so that the hood and the boarding step can be integrally attached and detached.

(Effect) According to the third aspect of the invention, attention is paid to the point that the boarding step necessary for forming a boarding passage on both the left and right sides of the engine and the hood covering the engine are adjacent to each other. The boarding step and the bonnet are integrated and detachable, so by removing it, the clearance between the engine and the front frame, as well as around the engine, can be opened. Maintenance for peripheral devices around the vehicle can be performed without being disturbed by the boarding steps.

Moreover, since the bonnet and the boarding step are not separately attached and detached but are attached and detached integrally, only one removing operation and one attaching operation are required.

(Effects) Therefore, according to the third aspect of the present invention, maintenance of the engine and the transmission case and the peripheral devices around them can be performed with good workability, and the hood and the boarding required as pre- and post-operations thereof. Removal / attachment operation of the work step can be performed with good workability.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a riding type rice transplanter has a quadruple link mechanism 4 at the rear of a four-wheel drive riding traveling body 3 having a pair of left and right front wheels 1 and rear wheels 2. The seedling planting device 5 of the four-row planting specification is connected to be movable up and down through
There is provided a basic structure in which reserve seedling rests 6 are provided at the front left and right sides of each of the above, and a hydraulic cylinder 7 for moving the seedling planting apparatus 5 up and down is provided.

The body frame 11 of the riding vehicle 1
As shown in FIG. 4, FIG. 10 and FIG. 11, a pair of left and right main frames 12 which are long in front and rear are arranged in parallel with each other, and Outer frame 13 and a front horizontal frame 14 connecting a front portion of the main frame 12 and a front portion of the outer frame 13.
, A rear horizontal frame 15 for connecting the rear part of the main frame 12 and the rear part of the outer frame 13, and a connecting member 16 for connecting the rear parts of the main frames 12, and the whole is configured in a rectangular lattice shape.

Each of the left and right main frames 12 is a sheet metal pressed material formed in a square pipe shape as shown in FIGS. 6 and 11, and is raised rearward in a side view as shown in FIGS. And a substantially trapezoidal vertical frame portion 12 extending forward and backward from the vicinity of the front-rear center to the rear portion.
A is extended and extended in a series, and the left and right vertical frame portions 12A are connected by the connecting member 16. An axle case 19 that supports the rear wheel 2 is mounted via a bracket 20 below the rear portion.

The outer frame 13 is a sheet metal pressed material having a vertical U-shaped vertical cross-sectional shape, and as shown in FIGS. .

As shown in FIG. 11, the front horizontal frame 14 is a straight round pipe material, and
Reference numeral 5 denotes a round pipe member whose center side is bent forward as shown in FIGS.

As shown in FIGS. 2 to 4 and FIG. 10, a transmission case 35 supporting the front wheels 1 is connected to the front of the body frame 11 in a state where the front ends of the left and right main frames 12 are connected to each other. A front frame 38 formed in a U-shape in plan view so as to surround the transmission case 35 from the front and both left and right sides thereof is connected with both ends of the front horizontal frame 14 as connection portions. .
The front frame 38 is a sheet metal press structure having a vertical U-shaped cross section, and headlights 39 are mounted on the left and right sides of the front surface of the front side 38A.

The transmission case 35 and the front frame 3
8, a pair of left and right support members 40 having a tilted attitude to the ground are connected to each other, as shown in FIGS. 2, 4, and 5, over the front side portion 38A. 40
A mounting table 42 for the battery 41 is mounted. Note that a battery 41 is provided on the front of the front frame 38.
A guard member 43 located in front of is mounted.
The transmission case 35 and the axle case 20 are connected by a reinforcing frame 37 made of a pipe material so as to secure the strength of the entire body.

FIG. 3, FIG.
As shown in FIGS. 6 and 7, a resin body cover 21 that covers the entire body from above is detachably attached. The driving deck 21 is provided in the first half of the body cover 21.
The rear fender 21b and the seat support 21c are integrally formed in the rear half. A driver's seat 24 is provided on the upper part of the seat support 21 c via a support fitting 23.
Is rotatably mounted around the fulcrum X,
A rubber (or spring) cushion member 25 for receiving and supporting the driver's seat 24 is attached.

The body cover 21 is shown in FIGS.
0, as shown in FIG. 11, in the mounted state, the outer frame 13 is elastically mounted and supported via anti-vibration rubbers 26 provided on the front, rear, left and right of the outer frame 13.
2A is connected to the rear connecting member 16 for connecting the vibration isolating rubber 2.
7, and is elastically received and supported. Also, as shown in FIGS. 3, 4, 6, 7, and 9 to 11, the connecting pins 28a provided on the left and right rear portions are engaged from above with the locking fittings 29 provided on the right and left rear portions of the body frame 11. As a result, the hook 30 provided on the body frame 11 is positioned on the connecting pin 28a and the connecting pin 28b.
The vehicle body cover 21 can be elastically supported on the vehicle body frame 11 by engaging the respective a and 30b, while the entire driver seat 24 can be removed by removing the hooks 30a and 30b. It is configured.

At the outer ends of the left and right outer frames 13,
As shown in FIGS. 1, 3, 4, 6, 10, and 11, the getting-on / off steps 31 are respectively connected in a suspended manner. The reinforcement stay 3 is designed to reinforce the boarding step 31 itself and the entire body frame 11.
2 are respectively erected.

As shown in FIGS. 1 and 8, the spare seedling rest 6 is constructed by providing a plurality of upper and lower seedling receiving shelves 6B on a support 6A standing upright from an airframe.

The support 6A is shown in FIGS. 1, 2, 8,
As shown in FIG. 2, the front-side support portion 6a and the rear-side support portion 6b are formed in an inverted U-shape in a lateral side view that is continuous at their upper ends. It is attached over the support portions 6a and 6b. 4, 5, 10 and 12, the left and right supports 6A are connected to each other by connecting the lower ends of the front support portions 6a with horizontal rod portions 6c so as to be unified. Have been.

The left and right columns 6A have side brackets Sb for attachment to the front frame 38 at the lower end of the front column portion 6a, and the transmission case 35 is located at the left and right center of the horizontal rod 6c. Has a center bracket Cb for mounting. That is, the left and right columns 6A are
It is attached to the front frame 38 at the front column portion 6a, and attached to the transmission case 35 at the horizontal rod portion 6c. The horizontal rod 6c is provided with a hook 44 used for towing or rope hanging.

The center bracket Cb is provided with a bracket portion b for bolting the rear end of the support member 40. That is, the support member 40 is connected to the transmission case 35 via the center bracket Cb.

The rear column portion 6b of the column 6A
Is finished with its lower end positioned higher than the operation step surface SF formed from the upper surface of the body cover 21. In the space below the rear pillar portion 6b, a body operation pedal 26 is provided. Has been deployed.

As shown in FIG. 2, a steering gear case 50 is connected to an upper portion of the transmission case 35, and an air-cooled engine 36 is mounted on the upper portion of the steering gear case 50.

As shown in FIG. 2, a steering handle 51 is attached to the steering gear case 50, and a pitman arm 52 pivotally supported at the lower portion of the transmission case 35 swings left and right by turning the steering handle 51. The left and right front wheels 1 are steered by a dynamic operation.

An instrument panel 54 is provided at the rear of the engine 36 with the handle post 53 as a support, and a fuel tank 55 is installed above the engine 36 so as to partially overlap the engine 36.

As shown in FIGS. 2 and 8, a bonnet 56 for covering the engine 36 is disposed in front of the instrument panel 54. Between the engine 36 and the front frame 38, as shown in FIG. As described above, boarding step 2 for closing the gap A from above and forming a floor of a boarding passage R for performing a walking movement between the front of the fuselage and the driving section B.
8 are arranged.

As shown in FIG. 8, the boarding step 28 is extended from the lower end of the bonnet 56 and is integrated with the bonnet 56. It is configured to be removable. A decorative cover portion 29 that covers the front frame 38 is provided continuously around the periphery of the boarding step 28.

As shown in FIGS. 2, 4, and 5, the engine 36 has an output shaft 36a mounted horizontally in a horizontal direction, and one end of the output shaft 36a is connected to the transmission case 35.
Is a double-tension type sub-transmission that performs high-low two-stage gear shifting by selectively engaging two sets of belt transmission mechanisms having different transmission ratios provided with tension clutches with the input shaft 35a. It is interlocked and connected via 57. The auxiliary transmission 57 also functions as a main clutch that cuts off transmission to the transmission case 35 by setting both sets of belt transmission mechanisms to the clutch disengaged state. A hydraulic pump 58 connected to the other end of the output shaft 36a is mounted on the right side of the engine 36.

The engine power input to the transmission case 35 via the sub-transmission 57 is appropriately shifted by a gear-type main transmission (not shown) that shifts forward two steps and reverse one step, and the left and right front wheels 1 are shifted. Is transmitted to
, The rear axle case 2 via the transmission shaft 59
0 is transmitted. As shown in FIG. 3, a part of the power input to the transmission case 35 and subjected to the main transmission is appropriately shifted by a stock transmission (not shown) provided in the transmission case 35, and then transmitted to the transmission shaft. The seedlings are transmitted to the seedling planting device 5 through 60.

The power input to the axle case 19 is, as shown in FIG.
a and 61b are transmitted to the left and right rear wheels 2.

As shown in FIGS. 2 to 4 and FIG. 8, the pedal 26 is pivotally supported by the body frame 11 so as to be arranged at the foot of the driving section B, that is, at the left foot of the lower space. A main clutch pedal 26A, and a pair of left and right side brake pedals 26B and 26C pivotally supported by the body frame 11 so as to be arranged side by side on the right foot portion,
The main clutch pedal 26A is used to disengage the sub-transmission 57, that is, the main clutch, by being depressed, and the side brake pedals 26B and 26C are operated.
Can be depressed separately and simultaneously. When each depressing operation is performed, the corresponding side clutch / brake 61a, 61b is operated to be disengaged and braked. The clutch and brakes 61a and 61b are both turned off and braked.

Then, as shown in FIG. 13, the front horizontal frame 14 of the body frame 11 is
It is a stopper for supporting and supporting the support arms 26a of A, 26B, 26C at the return position against the return biasing force of the return spring S.

The seedling planting apparatus 5 has a seedling stand 8 on which the seedlings are placed and reciprocally moved laterally with a constant stroke, a four-row planting mechanism 9 for planting two plants by one rotation, and a leveling of the planted rice field. And is connected to the quadruple link mechanism 4 so as to freely roll around the axis P in the front-rear direction.

The hydraulic cylinder 7 raises and lowers the seedling planting device 5 by shortening drive, and lowers the seedling planting device 5 by its own weight by extension operation.

Further, a muffler 45 having an exhaust port 45a directed laterally outward is disposed at a lower front portion in the front frame 38.

[Other Embodiments] In the above embodiment, a pair of left and right main frames 12, an outer frame 13, a front horizontal frame 14, and a rear horizontal frame 15 are used as the body frame 11.
However, the structure of the body frame 11
The shape can be changed as appropriate.

In the above embodiment, the bonnet 56 and the boarding step 28 are configured to be integrally detachable. However, the bonnet 56 and the boarding step 28 may be configured to be separately detachable.

In the above embodiment, the support member 40 is provided via the bracket Cb fixed to the support 6A of the preliminary seedling rest 6.
Is connected to the transmission case 35, but the support member 40 may be connected to the transmission case 35 via a bracket different from the bracket Cb, or may be directly connected to the transmission case 35. .

[Brief description of the drawings]

FIG. 1 is an overall side view of a riding rice transplanter.

FIG. 2 is a front side view of the riding type rice transplanter with a bonnet removed.

FIG. 3 is a rear side view of the riding type rice transplanter with its body cover removed.

FIG. 4 is a plan view of the riding type rice transplanter with its hood and body cover removed.

FIG. 5 is a front view of the riding type rice transplanter with its bonnet removed.

FIG. 6 is a vertical front view of the rear part of the riding type rice transplanter.

FIG. 7 is a perspective view of an airframe cover.

FIG. 8 is a perspective view of the front of a riding type rice transplanter.

FIG. 9 is a longitudinal sectional side view of the rear part of the riding type rice transplanter.

FIG. 10 is a plan view showing a frame configuration.

FIG. 11 is a perspective view showing an airframe.

FIG. 12 is an exploded perspective view of a front frame and a support.

FIG. 13 is a side view of a pedal mounting portion.

[Explanation of symbols]

 Reference Signs List 6 spare seedling rest 6A support 11 body frame 28 boarding step 35 transmission case 36 engine 38 front frame 38A front side 40 support member 41 battery 42 mounting base 56 bonnet A gap Cb bracket

Claims (3)

[Claims] 1. A transmission case is connected to a front portion of a body frame, and a U-shaped front frame which surrounds the transmission case from the front and both left and right sides, and an engine is mounted on the transmission case. A body structure of a riding type rice transplanter, wherein a support member is provided over the front side of the front frame and the transmission case, and a mounting base for a battery is provided on the support member. 2. The supporting member according to claim 1, wherein the supporting member is connected to the transmission case via a bracket, and a lower end of a column of a spare seedling rest provided on the front left and right sides of the fuselage is fixed to the bracket. The body structure of a riding rice transplanter. 3. A boarding step for covering the engine with a hood and closing a gap between the engine and the front frame from above is provided. The boarding step is connected to the lower end of the hood in a projecting manner. 3. The body structure of a riding type rice transplanter according to claim 1, wherein the bonnet and the boarding step are integrally detachable.