JP3558550B2 - Riding rice transplanter - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a rear body structure of a riding rice transplanter, and more particularly to a body structure near a driver's seat.
[0002]
[Prior art]
As the structure below the seat, as shown in Japanese Patent Application Laid-Open No. Hei 5-310091, the floor cover is formed with an opening of a minimum necessary size for inserting and removing a battery and passing a support member of a driver seat. When the seat is in a normal sitting posture, the opening is hidden in a plan view.
[0003]
[Problems to be solved by the invention]
The above-described configuration of the lower portion of the seat is difficult to implement when performing maintenance of the mechanical devices and electrical devices disposed in the lower portion of the seat with the seat removed, since the opening of the floor cover is small. At the same time, the floor cover itself must be removed to make it easier to perform, which requires a troublesome and troublesome operation, and there is room for improvement.
[0004]
In view of the above-mentioned circumstances, the present invention aims to improve maintainability and rationalize the structure below a driver's seat.
[0005]
[Means for Solving the Problems]
〔Constitution〕
A first aspect of the present invention is a riding type rice transplanter, comprising a floor cover having a step portion of a driving section and a rear fender section, and forming a bottomless box-shaped center cover covering an opening below a driver seat from the floor cover. To be installed in the raised state, the center cover is mounted on the fuselage by screwing a bolt that passes through the upper wall of the center cover through the opening to the support member erected from the fuselage frame. And a rubber suction seat is mounted on the support member via the upper wall of the center cover, and a lower end hem of the center cover is erected from a peripheral edge of an opening in the floor cover. configure the edge rib to the outer circumference, erected in front stays from body frame through insertion holes formed on the front side upper surface of the center cover above the center cover, Serial with pivotally swing freely open and close in the horizontal fulcrum lower front in the front stay which projects above the upper surface of the center cover seat, to a rear lower portion of the seat are supported by the suction seat It is characterized by.
[0006]
According to a second aspect of the present invention, in the first aspect, a vertical rib extending vertically is integrally formed on a back surface of a lower end skirt portion of the center cover, and an edge rib is sandwiched and disposed in a downwardly open concave portion formed at a lower end portion of the vertical rib. It is characterized by being constituted so that it may be performed.
[0007]
[Action]
According to the first aspect of the present invention, the center cover can be removed by a simple operation of removing the seat and then removing the bolt, and when the center cover is mounted, the lower end hem surrounds the edge rib of the floor cover opening. Therefore, even if there are some dimensional errors and product errors, it is possible to prevent a gap from being formed at a joint portion between them.
[0008]
Since the center cover has a bottomless box shape, if it is removed, the periphery of the lower part of the seat will be open, and it will be a large three-dimensional opening horizontally and vertically, so that fingers and tools can easily reach and maintenance is easy, There is no need to remove the floor cover. Also, in the past, there was a cover opening that was not covered by the lower part of the seat, so the floor cover built-in material could be seen from the opening depending on the viewing angle, but with the structure of the present application, the floor cover was left open. Since there is no opening, it is preferable in that the internal components of the floor cover cannot be seen from the outside.
[0009]
According to the configuration of claim 2, the vertical rib is provided on the back side of the lower end hem of the center cover, and the edge rib of the floor cover is sandwiched in the downward open concave formed at the lower end of the vertical rib. Since the lower end of the center cover does not separate from the edge rib, for example, the lower end is lifted from the edge rib, the finishing accuracy of the joint between the center cover and the floor cover is improved, and the appearance is improved. Since the vertical ribs are formed integrally with the center cover by molding or the like, there is almost no increase in cost due to the provision of the vertical ribs.
[0010]
〔effect〕
In the riding type rice transplanter according to the first and second aspects, the center cover is formed as a bottomless box and is made of a relatively large part, so that the maintenance of the lower portion of the seat in the detached state is improved, and the center cover is removed. It is easy to attach and detach, and the appearance including the floor cover at the time of installation has been improved, and the rear structure of the vehicle body has been streamlined.
[0011]
In the riding type rice transplanter according to the second aspect, the economical contrivance of integrally forming the vertical ribs on the back surface of the center cover allows the connection portion with the floor cover to have a smoother shape, contributing to further improvement in appearance. There are advantages to
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 and 2, an engine 3 and a transmission case 4 are provided at the front of a body having a pair of left and right front wheels 1 and a pair of left and right rear wheels 2 that can be steered. And a seedling planting device 7 is connected to the rear part of the machine body via a link mechanism 6 so as to be able to move up and down freely to form a riding type rice transplanter. The seedling planting device 7 is configured to be six-row planting, and includes three planting transmission cases 8, a rotating case 9 rotatably supported on both left and right sides of the planting transmission case 8, and a rotating case 9 at both ends. It comprises a pair of planting claws 10 to be deployed, three ground floats 11, a seedling mounting table 16, and the like.
[0013]
As shown in FIGS. 3 and 4, an HST 12 is integrally provided on the left lateral side of the transmission case 4 of the horizontal axis type, and the HST 12 and the engine 3 are belt-driven. A hydraulic pump 14 driven by a shaft 13a of a pump 13 to which engine power is input is mounted on the right side of the transmission case 4, and the rotation of a shaft 15a of a motor 15 is input to the transmission case 4.
[0014]
As shown in FIGS. 5 and 6, the power of the motor shaft 15 a is transmitted to the front wheel differential mechanism 19 and the traveling output shaft 20 via the main clutch 17 and the two-stage high and low traveling auxiliary transmission mechanism 18. At the same time, the power that has passed through the front wheel differential mechanism 19 is transmitted to the left and right front wheel drive transmission shafts 19a, 19a. Reference numeral 21 denotes a front wheel differential lock mechanism that can be freely turned on and off.
[0015]
Further, a transmission gear 23 is provided on a drive shaft 18a of the traveling auxiliary transmission mechanism 18 via a one-way clutch 22 that transmits only rotation in the direction in which the body advances, and the transmission gear 23 is provided with seven high and low gears. Power is transmitted to the planting output shaft 26 via the gear-type inter-stock transmission mechanism 24 and the jump clutch 25. In the HST 12 and the transmission case 4, the traveling output shaft 20 and the planting output shaft 26 are front-rear shafts, but the other shafts such as the drive shaft 18 a are set to left-right horizontal shafts. In addition, the axis P of the traveling output shaft 20 and the axis Y of the planting output shaft 26 disposed on the traveling output shaft 20 coincide with the left and right centers C of the vehicle body as shown in FIG. Are located in
[0016]
As shown in FIGS. 11 to 14, a rear axle case 27 for supporting the rear wheels 2, 2 includes a rear axle 28, a gear type reduction mechanism 29 for the rear axle 28, and left and right side cases including a side clutch / brake 30. The parts 31, 31 and the left and right side case parts 31, 31 are connected, and a sheet metal center case part 33 for supporting the input shaft 32 is connected and integrated. The input shaft 32 and the traveling output shaft 20 of the transmission case 4 are linked to each other via a traveling transmission shaft a which is coupled to both of them.
[0017]
The rear axle case 27 is supported on the body so as to freely roll left and right around the axis P of the input shaft 32 facing forward and backward. That is, a front support member 35 for externally fitting a large-diameter pipe 34 that rotatably surrounds the input shaft 32 into a bearing, and a rear support member for internally fitting a small-diameter pipe 36 fixed to the rear side of the center case part 33 in a bearing. 37 are mounted on the body frame F.
[0018]
Initially compressed winding springs 39, 39 are interposed between a pair of left and right main frames 38, 38 constituting the body frame F and left and right spring receivers 33a, 33a fixed to the center case portion 33. is there. That is, the rolling springs 39, 39 extending between the rear axle case 27 and the body are disposed on the left and right sides of the rolling fulcrum P, respectively, and the rolling regulating mechanism 40 for biasing the rear axle case 27 to the rolling neutral position is provided. Usually, the left and right front wheels 1, 1 and the left and right rear wheels 2, 2 are horizontal to each other.
[0019]
As shown in FIGS. 15 and 16, the rear end of the planting transmission shaft b coupled to the planting output shaft 26 of the transmission case 4 and the PTO input shaft 41 provided in the feed case 44 are The PTO interlocking shaft 42 and the universal joints 43 at the front and rear ends of the PTO interlocking shaft 42 are operatively connected to each other, and the seedling planting device 7 can be freely rolled up and down around a rolling fulcrum shaft 46 disposed immediately above the PTO input shaft 41. It is supported by the link mechanism 6.
[0020]
That is, the rolling fulcrum shaft 46 protruding forward from the feed case 44 is rotatably supported on the pipe portion 45a at the lower end of the mast member 45 at the rear end of the elevating link mechanism 6, and the axis X of the rolling fulcrum shaft 46 is Left and right centers C. Therefore, in the rolling neutral state of the seedling planting apparatus 7, the axis Z of the PTO input shaft 41 also coincides with the vehicle body center C.
[0021]
As described above, in the Honda planting machine, the running shafts a and b for planting and planting, the rolling axis P of the rear axle case 27, and the rolling axis X of the seedling planting device 7 are all the center C of the vehicle body left and right. And the right and left movement of the PTO input shaft 41 due to the rolling of the seedling planting device 7 is extremely small, and the universal joints 43 at the front and rear ends of the PTO interlocking shaft 42 are bent. The angle is kept to a minimum.
[0022]
Next, the vehicle body structure below the driver's seat will be described.
As shown in FIGS. 1, 2, and 7 to 10, the driving unit 5 includes a floor cover 49 having a step portion 47 and a rear fender portion 48, and a center cover 51 below the driving seat 50. It has a good appearance. The center cover 51 is formed as a bottomless box-shaped lid member that covers an opening 49 a formed below the driver's seat 50 in the floor cover 49, and is provided so as to stand up from the floor cover 49.
[0023]
The center cover 51 attaches one knob bolt 52 that passes through the upper wall 51a thereof to a downwardly-facing U-shaped support member 53 that is erected from a vertical plate frame portion 54 (an example of the body frame F) through an opening 49a. While being attached to the vehicle body by screwing, the lower end hem portion 51c of the center cover 51 surrounds an edge rib 49b erected from the periphery of the opening 49a of the floor cover 49 in the attached state to the vehicle body. It is configured to do so.
[0024]
A large number of vertical ribs 51b extending in the vertical direction are integrally formed on the back surface of the center cover lower end bottom portion 51c, and a downwardly open concave portion formed at the lower end of the vertical ribs 51b has a substantially U-shaped cross section. The edge rib 49b of the floor cover 49 is sandwiched between the cushion rubbers 57. Due to this sandwiching arrangement, the floor cover 49 and the center cover 51 are securely and connected to each other without misalignment or floating, and exhibit a good appearance.
[0025]
The driver seat 50 is pivotally supported by a front stay 55 erected from the upper end of the front end of the vertical plate frame portion 54 at a lateral fulcrum Q so as to be able to swing open and close forward, and a pair of rubbers is provided on the left and right sides of the lower surface of the lower portion of the seat. The seats 56 are mounted on the vehicle body by being mounted on a support member 53 via an upper wall 51a of the center cover 51. Therefore, the center cover 51 is formed only with the insertion holes for the front stay 55 and the knob bolt 52, so that the inside of the center cover 51 is first invisible from the outside.
[Brief description of the drawings]
FIG. 1 is an overall side view of a riding type rice transplanter. FIG. 2 is an overall plan view of a riding type rice transplanter. FIG. 3 is a side view showing an arrangement structure on a floor in front of a vehicle body. FIG. FIG. 5 is an exploded view showing the traveling system transmission structure inside the millon case. FIG. 6 is an exploded view showing the planting system transmission structure inside the millon case. FIG. 7 is a partially cutaway view showing the structure below the driver's seat. FIG. 8 is an exploded perspective view of a floor cover and a center cover. FIG. 9 is a cross-sectional view showing a structure of a connecting portion between the center cover and the floor cover. FIG. 10 is a cross-sectional front view showing a mounting structure of a zeta cover. 11 is a rear view showing the positional relationship between the transmission shaft for traveling and planting and the rear axle case. FIG. 12 is a side view of a partially cutaway showing a rolling support structure of the rear axle case. Rear view of a partially cutaway shown in FIG. 14: rear axle FIG. 15 is a side view of a seedling planting device. FIG. 16 is a partially cutaway side view showing a structure near a rolling fulcrum of the seedling planting device. Description】
5 Operating part 47 Step part 48 Fender part 49 Floor cover 49a Opening 49b Edge rib 50 Operating seat 51 Center cover 51a Upper wall 51b Vertical rib 51c Lower end hem 52 Bolt 53 Support member 56 Suction seat F Body frame

Claims (2)

A bottomless box-shaped center provided with a floor cover (49) having a step portion (47) of a driving portion (5) and a rear fender portion (48), and covering an opening (49a) below a driving seat (50). In order to provide the cover (51) in a state of standing up from the floor cover (49), the center cover (51) is bolted (52) through the upper wall (51a) through the opening (49a). It is mounted on the body by screwing it to a support member (53) standing upright from the frame (F), and in this mounted state, a rubber suction seat (56) (56) Is mounted on the support member (53) via the upper wall (51a) of the center cover (51), and the lower end skirt (51c) of the center cover (51) is Floor cover (49 Said edge ribs (49b) erected from the periphery of the opening (49a) configured to outer circumference, from the body frame (F) through insertion holes formed on the front side upper surface of the center cover (51) in A front stay (55) is erected above the center cover (51), and a lower portion of the front side of the seat (50) projects laterally from the front stay (55) projecting above the upper surface of the center cover (51). A riding type rice transplanter pivotally supported by (Q) for swinging opening and closing, and a lower rear portion of the seat (50) supported by the suction seats (56) and (56) . A vertical rib (51b) extending vertically is integrally formed on the back surface of the lower end hem (51c) of the center cover (51), and the vertical rib (51b) has a downwardly open concave formed at the lower end thereof. The riding type rice transplanter according to claim 1, wherein the edge rib (49b) is configured to be sandwiched therebetween.

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