JP2694853B2 - Riding agricultural work machine - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a paddy field riding work machine in which a working machine for rice planting is mounted on a riding type traveling vehicle body.

[Conventional technology]

Conventionally, there is a paddy riding work machine equipped with a cover body for covering the traveling vehicle body with a floor portion for riding, in which the cover body is integrally provided from above the front end portion of the traveling vehicle body to above the front side of the rear wheels. It was

[Problems to be solved by the invention]

In the above-mentioned conventional type, when performing work such as inspection and adjustment of the transmission system and operation system of the traveling vehicle body, a cover body covering the traveling vehicle body is integrally provided from above the front end portion of the traveling vehicle body to above the front side of the rear wheels. Since it is a cover body of the above, it is difficult to start the work quickly because it is necessary to remove the entire large cover body before performing the above-mentioned inspection and adjustment work,
In addition, since a large space is required for the place where the removed cover body is placed, there is a problem that the work place is limited.

[Means for solving the problem]

In order to solve the above problems, the present invention has a cover body 40 that includes a floor portion 41 when riding and covers the traveling vehicle body 2 from the front end of the machine body to the front upper part of the rear wheel 16 in the machine longitudinal direction.
A steering shaft 13a for attaching the steering wheel 13b to the upper end below the operation panel 48 provided below the steering wheel 13b and provided with at least the operation tool, and the periphery of the connecting member for connecting to the operation tool of the operation panel 48. In a riding agricultural work machine in which a steering post cover 47 for covering is attached to the traveling vehicle body 2,
40 is divided into a front cover body 40a and a rear cover body 40b in the front-rear division, the steering post cover 47 is divided into a front portion 47a and a rear portion 47b in the front-rear division, and a front cover body 40a of the cover body 40 is formed. When the front portion 47a of the steering post cover 47 is removed, the portion covered by the front portion 47a and the lower portion of the fuselage are continuously opened to the front of the fuselage, and at least one of the open portions is opened. The riding agricultural machine is characterized in that the transmission device A of the section and a connecting member for connecting to the operation tool of the operation panel 48 are arranged.

[Functions and Effects of the Invention]

Since the present invention is configured as described above,
Without removing the entire cover covering the traveling vehicle body 2, the front cover body 40a which is divided into the front and rear parts and becomes smaller, and the front portion 47a of the steering post cover 47 which is divided into the front and rear parts and becomes smaller, are removed. A connecting member for connecting the portion covered by the front portion 47a and the lower portion of the machine body to the front side of the machine body continuously, and connecting at least a part of the transmission device A and the operation tool of the operation panel 48 in the open portion. Since the and are arranged, it is possible to inspect and adjust the operation system and the transmission system of the front part of the airframe at once in a wide range by standing on the front side of the airframe, and the front cover body 40a and the front part 47a to be removed are relatively small. Since they are configured, they can be easily attached and detached, and the above-mentioned inspection and adjustment work can be done quickly.Furthermore, since there is no need for a large space for the cover body 40a and the front portion 47a after being removed, a place to perform work. Control The result receiving difficult, therefore, the inspection and adjustment work becomes allow better efficiency.

〔Example〕

1 to 6 show an embodiment of the present invention, and show a state in which a working machine 3 for rice planting is attached to the rear portion of a traveling vehicle body 2 and used as a passenger rice transplanter 1.

The traveling vehicle body 2 has a transmission case 5 and a differential case 9 integrally formed with the transmission case 5 at the front of the machine body. Left and right front axle cases 10 and 10 project outward from both side surfaces of the differential case, and at the ends thereof. Front wheel support cases 11, 11 are vertically erected so that they can be turned, and the left and right front wheels 12, 1 are attached to the lower ends of the front wheel support cases.
2 are each supported. A steering case 13 is provided at the front of the mission case 5, a steering shaft 13a is projected upward from the steering case 13, and a steering wheel 13b is attached to the upper end of the steering shaft 13a.

The front end of the main frame 7 extending rearward is fixedly connected to the rear surface of the differential case 9, and the rear case 14 is provided at the rear end of the main frame. The chain cases 15 and 15 are attached to the left and right ends of the rear case so as to face rearward, and the left and right rear wheels 16 and 16 are axially supported at the rear ends thereof, respectively. The rear case 14 is positioned approximately in the middle of the front wheel 12 and the rear wheel 16 in a side view, the engine base 19 is horizontally mounted on the rear case, and the engine 20 is installed thereon.

The output shaft 22 of the engine protrudes forward, and its extension shaft 23
Is provided in front of the mission case 5. As shown in FIGS. 3 and 5, below the extension shaft 23, there are provided a mission input shaft 24 projecting forward from the mission case 5 and a counter shaft 25 having substantially the same height as the input shaft. The rotational power of the extension shaft 23 is transmitted to the mission input shaft 24 via the counter shaft 25 by a belt. That is, the belt type transmission A is a pulley of the extension shaft.
One belt 27 is provided between 23a and the counter shaft pulley 25a.
Is stretched, and two belts 28 and 29 are stretched between the pulley 25a of the counter shaft and the pulley 24a of the transmission input shaft. The transmission mechanism from the counter shaft 25 to the mission input shaft 24 is configured as a belt transmission mechanism having an auxiliary shift and a clutch, and either the belt 28 or the belt 29 is tensioned by the tension pulley 30 to perform low speed or high speed transmission. It is possible to switch between a clutch engaged state in which it is performed and a clutch disengaged state in which both belts 28 and 29 are loosened to cut off transmission.

The power input to the transmission case 5 from the transmission input shaft 24 is taken out as a traveling system output and a working system output. The drive system output is divided into a front wheel drive output and a rear wheel drive output by the differential case 9, and the front wheel drive output is transmitted to the front wheel 12 through the transmission means in the front axle case 10 and the front wheel support case 11.
The rear wheel drive output is transmitted to the rear case 14 via the rear wheel transmission shaft 32, and is transmitted to the rear wheel 16 via the transmission means in the rear case and the chain case 15. On the other hand, the power of the work system is transmitted to the rear end of the machine body through the first transmission shaft 33 for transmitting to the work machine, and from here, the work machine 3 described later is transmitted through the second transmission shaft 34. Power is transmitted to.

A cover body 40 having a floor portion 41 when riding is placed over the chassis configured as described above. The cover body 40 is a flat-shaped floor portion 41 and a trapezoidal front cover portion that protrudes from the floor and covers the upper part of the front end portion of the machine body.
42 and an engine cover portion 43 that covers the engine 20 and the like, and a floor portion that is located between the front wheels 12 and the rear wheels 16.
Steps 44, 44 for getting on and off one step lower than the floor are formed on both left and right sides of 41. A steering post 46 including the steering shaft 13a is projected upward from a rear portion of the front cover portion 42, and a steering post cover 47 is provided around the steering post 46. An operation panel 48 to which various operation levers and meters are attached and a headlight 49 are provided above the steering post 46, and cables pass through the steering post cover 47. Further, on the engine cover portion 43, the cockpit 5 is opposed to the steering wheel 13b and the operation panel 48.
0 is set. Furthermore, on the lower side of the front end of the body,
A belt cover 51 is provided to cover the front surface and the lower surface of the belt transmission A. The engine cover part 43
A notch 43a is formed in the rear part of the floor part 41 so that the link device 60 to be described later is arranged, and a rear part 41 of the floor part 41 is formed.
The c and 41c are formed in an inclined shape so as to cover the upper front side of the rear wheels 16 and 16.

The cover body 40 is divided into front and rear parts along the separation plane XX. This separation surface XX divides the front cover portion 42 into the front and rear portions by passing through the lower end front and rear center of the steering post cover 47 and the front and rear side portions of the floor portion 41 by dividing the front cover portion 42 into the front and rear portions. It is composed of a surface and a surface connecting the both in the front-rear direction. Therefore, the cover body 40
Is divided into a front cover body 40a and a rear cover body 40b with the separation surface XX interposed therebetween.
Is also divided into a front side front floor portion 41a and a rear side rear floor portion 41b. The front cover body 40a has a generally concave shape in a plan view, and can be removed from the machine body by moving it forward with the fixing bolts and the like removed. When the front cover 40a is removed from the machine, the side surface of the mission case 5 is completely exposed and the steering case 13 and the upper part of the belt type transmission A are opened. It will be easy to do. The belt cover 51 may also be detachable from the front cover body 40a integrally.

Further, the steering post cover 47 is also divided into a front portion 47a and a rear portion 47b near the front and rear center. Rear part 47b
Is fixed to the rear body 40b, while
The front portion 47a is detachably attached to the rear portion 47b. As shown in FIG. 6, the structure of the mounting portion is such that a plurality of bolt receivers 53, ... Are provided along the edge of the rear portion 47b, and the edge of the front portion 47a is associated with the bolt receivers. U-shaped cutouts 54, ... Are formed in the portion, and the bolts 55 are fastened to the bolt receiver 53 in a state where the edges of both portions are overlapped with each other, whereby the both are integrated. Therefore, when the bolts 55, ... Are loosened, the front portion 47a can be pulled out forward to be removed, and the cables housed inside can be easily inspected. The operation panel 48
Also, since the headlight 49 is attached to the rear portion 47b side, these remain as they are even if the front portion 47a is removed.

At the rear of the traveling vehicle body 2, a link device 60 that supports the work machine 3 and vertically moves the work machine 3 is provided. In this link device 60, an upper link 62 and a lower link 63 are rotatably supported by a support frame 61 fixed to the machine body, and a connecting frame 65 for mounting a working machine is attached to the rear end portions of these upper and lower links. ing. At the lower end of the connecting frame 65, a rolling shaft 66 that rotatably supports the work implement 3 is provided. By expanding and contracting the hydraulic cylinder 67 provided between the rear part of the rear case 14 and the link base 62a of the upper link, the connecting frame 65 can be moved up and down while being held in a substantially fixed posture, and the work attached to this The machine 3 is raised and lowered.

The work machine 3 is a work machine for rice planting, and is provided with a transmission case 70 that is transmitted from the traveling vehicle body 2 side via the transmission shaft 34, and is inclined above the transmission case so that the front side is higher. Seedling mounting table 71 and planting claw 72 that holds the seedling at the tip
a and provided with a planting rod 72 for picking up the seedlings one by one while planting them in the field while moving up and down while drawing a predetermined trajectory, and on the lower side of the transmission case 70, A center float 75 for supporting the machine body of the working machine 3 on the surface of the paddy field and a pair of left and right floats 76, 76 are pivotally mounted so as to be vertically rotatable. A rod 77 for detecting vertical movement is attached to the front part of the center float 75, and when the float moves upward, the hydraulic cylinder 67 is extended to lift the working machine 3,
On the contrary, when the float moves downward, the hydraulic cylinder 67 is contracted to lower the working machine 3.

[Brief description of the drawings]

The drawings are briefly described below. FIG. 1: Side view showing a riding rice transplanter. FIG. 2 is a plan view showing a body structure of a passenger rice transplanter. FIG. 3: A front view showing a belt type transmission. FIG. 4: Side view showing a belt type transmission. FIG. 5: Plan view showing the cover body. FIG. 6 is a side view showing a detachable structure of the steering post cover. The main symbols in the figure will be briefly described below. 2: Traveling vehicle, 5: Mission case 12: Front wheel, 13b: Steering wheel 16: Rear wheel, 40: Cover body 41: Floor part, 40a: Front cover body 40b: Rear cover body, 47: Steering post cover 47a: Steering post cover front part 47b: Steering post cover rear part 48: Control panel

 ─────────────────────────────────────────────────── ─── Continuation of the front page Judge General Chairman Nagahiko Asano Judge Judge Yoshikazu Iguchi Judge Morikawa Mototsugu (56) References JP 63-112911 (JP, A) JP 48-12626 (JP, A) JP Shown 62-20708 (JP, A) Shown 62-83783 (JP, U) Shown 621-217312 (JP, U) Shown 57-122495 (JP, U) Shown

Claims (1)

(57) [Claims] 1. A cover body 40 having a floor portion 41 for riding and covering the traveling vehicle body 2 from a front end portion of the body to a front upper portion of a rear wheel 16 in a longitudinal direction of the body, and a steering wheel 13b.
Operation panel that is arranged below the vehicle and includes at least operation tools
In the riding agricultural work machine in which a steering post cover 47 covering the periphery of a steering shaft 13a for attaching the steering wheel 13b to the upper end below 48 and a connecting member connected to the operation tool of the operation panel 48 is attached to the traveling vehicle body 2, The cover body 40 is divided into a front cover body 40a and a rear cover body 40b, and the steering post cover 47 is divided into a front portion 47a and a rear portion 47b, and the front cover body of the cover body 40 is divided. When 40a and the front portion 47a of the steering post cover 47 are removed, the portion covered by the front portion 47a and the lower portion of the fuselage are continuously opened to the front side of the fuselage. A riding agricultural working machine characterized in that at least a part of the transmission device A and a connecting member that is connected to the operation tool of the operation panel 48 are arranged.