JPH04141012A - Agricultural working machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to the structure of a partial mounting portion of a working machine in an agricultural working machine such as a rice transplanter.

[Prior Art] A vehicle includes an up link and a lower link supported vertically and rotatably on a traveling vehicle body, and a connecting frame attached to the tips of these upper and lower links, and a rotation provided in the front and rear direction on the connecting frame. There is an agricultural machine in which a working machine part is attached to a freely movable rolling shaft. This type of agricultural machine is equipped with a rolling lock device that prevents the work machine from rolling during non-working conditions such as when turning. It has been proposed to provide a protrusion that protrudes to the side, and when the upper link rotates beyond a certain angle, the protrusion engages with a retaining member provided on the work implement side.

[Problem to be solved by the invention] The link device is composed of one link and the lower link is made of two pieces of wood.The lower link is formed into a cross-sectional shape with high bending rigidity, and the upper link is made up of two pieces of wood. It is generally molded with some flexibility to absorb load fluctuations. For this reason, there is a problem in that when the upper link bends due to the weight of the working machine part that causes the upper link to perform the rolling lock operation, the operation becomes unstable.

[F stage for solving the problem] In order to solve the problem described in F-, the present invention has the following configuration.

That is, the agricultural machine according to the present invention has 1-
Rotatably supported below = link and one'IT
1. 1 link and a connecting frame attached to the distal end side of these lower links, and in which the working machine part is attached to a rotatable rolling shaft provided in the front-rear direction on the connecting frame, wherein the lower link When the rotation angle becomes 1 or more, a part of the lower link becomes F# in a part of the working machine part, and the rolling low 2 device restricts the rolling movement of the working machine part about the rolling axis. It is characterized by the fact that it is provided.

[fIHNovember 1] A rolling row device is installed that can restrict the rolling movement of the work equipment part around the rolling axis when the rotation angle of the trin becomes 1- or more, so that the work equipment part is lower than a predetermined height. When ■- rises to 1-, is it made? , 4# are automatically fixed to prevent rolling. The lower links are in a pair on the left and right, and have high bending rigidity, so they are difficult to bend even against heavy work equipment, and the rolling lock operation is performed reliably.

[Embodiment] Figures 1 and 2 show an embodiment of the present invention, and this agricultural machine 1 has a link device 3 provided at the rear of the machine 2, which is a traveling vehicle body, and a link device 6, which is a working machine part. Row planting +-1 part 4
is fully installed, and a fertilizer application device 5 is also provided separately from this, and the whole is constructed as a riding-on fertilizer application machine.

This tIj, 2 has a rectangular frame 6 that is long from front to back in plan view.
An engine lO is disposed at a position toward the rear of the intermediate portion of the frame, and a transmission case 11 is disposed in front of the engine lO. The transmission case 11 has a hydraulic pump 12 assembled to its rear surface, and a steering boss 13 protrudes upward from its front portion. A front wheel support case 14.14 is provided so as to be able to change direction on the side of the transmission case 11, and a front wheel 15.15 is pivotally supported at its lower end. In addition, a rolling rod 17 is supported by a rolling shaft 16 protruding from the rear end of the brake L/-A 6, and a rear wheel support case 18.1 is attached to both left and right ends of the rolling rod 17.
A rear wheel 19.19 is pivotally supported on 8. A cover 20 serving as a step for operation is mounted on these L, and a pilot's seat 21 is installed on the side of the cover at one position of the engine IO.

The engine output taken out to the engine output shaft 10a is transmitted to the hydraulic pump drive shaft 12a via the belt 23,
Furthermore, it is transmitted from the hydraulic pump drive shaft to the mission input shaft 11a via the bell I.24. The pulleys 25 and 26 on which the belt 24 is hung are configured such that the width of the belt groove can be adjusted.
By changing the effective diameter of the transmission ratio, the transmission ratio can be changed continuously. That is, the hydraulic pump drive shaft 12a
The transmission section from the transmission input shaft 11a to the mission input shaft 11a is configured as a belt continuously variable transmission type sub-transmission device. The transmission input shaft 11a is provided with a main clutch (not shown), and inside the case 1, there are a main transmission, a transmission between the wheels, a rear wheel differential 6, and a front wheel differential. A brake, rear wheel brake system, etc. are housed here. mission case 11
Front wheel drive output, rear wheel drive output and working output are taken out from the front wheel drive output, the front wheel drive output is transmitted to the front wheel support case 14.14, and the rear wheel drive output is transmitted to the rear wheel support case 14.14 via the rear wheel transmission shaft 28.28. , is, and the working output is transmitted to the planting +1 clutch case 30 provided diagonally rearward of the engine 10 via the planting unit driving wheel 29. From the rear of this clutch case 30, there is a PTO that drives the planting section 4.
A shaft 32 and a fertilizing drive shaft 33 for driving the fertilizing device 5 protrude.

In the link device 3, one 1-link 41 and a pair of left and right F links 42.42 are supported in a link base frame 40 erected at the vk end of the frame 6 so as to be vertically rotatable. A connecting frame 43 is provided at the rear end of the link. As shown in FIGS. 3 and 4, the connecting frame 43 has 21-, lower links 41, 42, 42 and bins 45, 46.
The docking base 48 is attached to the docking base 48, and the F- and king plate 49 are removable to the docking base 48.
0 is equipped with a planting part 4 in a rolling manner. That is, the docking base 48 is provided on the link side, and the docking plate 49 is provided on the planting part side.As a joint between the two 48. A hook receiving member 52 is fixed horizontally, and convex members 53 53 are provided on both side surfaces of the docking plate 49 to engage with the hook receiving member 52 at the upper end thereof. hook part 5
4 is formed, and the convex members 5 are formed on both side surfaces.
A retaining portion 55.55 is formed which engages with 3.53. When connecting, lower the upper and lower links 41, 42, 42 and attach the docking base 48 to the toking plate 49b.
The running vehicle body 2 is made to play a par 7 with the heights aligned and both 8.49 points facing each other. The rear part of the lower link 42.42 protrudes more toward the planting area than the bin 46, and the ends 42a, 42a are bent outward to form a V-shape when viewed from the construction surface. The beading plate 49 is correctly guided to the docking base 48 by the portions 42a, 42a.

The hydraulic cylinder 57, which is a driving means of the link device 3, has a base pivotally attached to the frame 6, and a tip end of a piston rod connected to a lower end of a swing arm 58 hanging from the base of the upper link 61.

When the hydraulic cylinder 57 is expanded or contracted, the connecting frame 43 is moved up and down while being held in a substantially constant position, and the planting section 4 attached thereto is raised and lowered.

Further, a roller holding member 61 is provided on the upper surface of the rolling bearing section 60 of the planting section 4, and a pair of left and right rollers 6 is attached to the roller holding member 61.
2 and 62 are attached vertically with the axis centered. The installation height of these rollers 62, 62 is such that they are located above the lower link tips 42a, 42a during the working state shown by the chain line in FIG. The lower link 42 is set to be at the same height as the lower link tips 42a, 42a when the lower link 42 rotates upward by a partial angle θ or more. Therefore, when the planting section 4 is raised when turning, etc., the rollers 62, 62 fit into the space between the lower link tips 42a, 42a, and the rolling movement of the planting section 4 around the rolling shaft 50 is restricted. Ru. When the planting section 4 is lowered, the rollers 62, 62 are removed from the space between the lower link tips 42i and 42a, and the planting section 4 can be rolled. In this way, the bottom link tip,
A rolling lock device consisting of rollers, etc.
The rolling of the planting part 4 is automatically locked and released due to the raising and lowering movement of the planting part 4. As shown in the figure, the lower links 42 and 42 have a vertically elongated cross-sectional shape, so the upper link 41
The amount of deflection is smaller than that of the 2-legged roller, and the locking and releasing operations of bipedal rolling are performed reliably.

As shown in FIG. 5, if neutral springs 64, 64, etc. are tied between the upper part of the docking plate 49 and both ends of the roller holding member 61, the docking plate 49
When the docking plate 48 is removed from the docking base 48, the docking plate 49 does not rotate around the rolling shaft 50 or wobbles when attached/detached, and the work of connecting the docking plate 48 and docking plate 49 is made smoother. I can do it.

Further, as shown in FIG. 6, a detachable lever 66 is rotatably provided at the lower part of the docking puto 48, and the detachable lever and the docking plate 49 are connected to the swing control spring 66.
7, it becomes possible for the docking plate 49 and below to rotate back and forth (swing motion) around the hook receiving member 52, allowing the planting section 4 to smoothly follow changes in the field situation. , the docking base 48 and the docking plate 49 can be attached by simply operating the attachment/detachment lever 66.
can be separated, allowing for easy attachment and detachment of both.

FIG. 7 shows a mounting section of a different planting section, which attaches the rolling shaft 50' to the rolling bearing section 60.
By inserting the planting part 4 into the connecting frame 43', the planting part 4 is attached to the connecting frame 43'. Rolling bearing part 60'
A rolling holding member 61' is provided at the upper end thereof, and a pair of left and right rollers 62', 62'' are attached to the upper end of the member so that the axes of the rollers 62' and 62'' are aligned in front and back. Similarly, when the tip of the lower link 42' is facing downward, the tip of the lower link 42a', 42
a', and is set to be at the same height as the lower link tips 42a', 42a' when the lower link 42' rotates by a certain angle or more. Therefore, when the planting part 4 is lowered, the rollers 62', 62' move the lower link tips 42a', 4 as shown in FIG. 8(a).
2a', and the planting part 4 can roll. However, when the planting part 4 is raised, the rollers 62' and 62' move to the lower link tip 42a as shown in FIG. 8(b).
', 42a, and the rolling shaft 5
The rolling movement of the planting portion 4 around 0' is restricted.

The planting section 4 is integrated with the rolling bearing section 60, and is
A transmission case 70 transmitting power from the O shaft 32, transmission pipes 71.71 protruding from both side surfaces of the transmission case, and transmission pipes 71.71 extending rearward from the center of the transmission case 70 and both ends of the transmission pipes 71.71. 3 chain cases 72. ...
A planting section frame is constituted by each chain case 72.
... A total of 6 sets of planting devices 74. One set on each side of the rear end.
...is provided. Planting part M74. . . , a seedling stand 75 tilted so that the front side is uppermost is supported by a support frame 77 and a rail 79 attached to a seedling stand support frame 78 so as to be slidable left and right. The upper surface of the seedling tray 75 has a seedling tray 7 corresponding to the number of planting rows (6 in the illustrated example).
5a, . . . , and a belt-type seedling feeding device 81, . Further, at the lower end of the seedling stand 75, a planting section ff1 is provided.
74. Seedling outlet 82 corresponding to... ... is formed integrally with the support frame 77. The seedling platform 75 reciprocates left and right to sequentially supply the seedlings on the platform to the seedling outlet 82, and the pair of planting rods 7 of the planting device 74
4a and 74a perform closed loop motion drawing a predetermined trajectory.

The seedlings supplied to the seedling outlet 82 are alternately held and planted in the field. When the seedling platform 75 reaches the end of the left and right travel and finishes supplying one horizontal row of seedlings to the seedling take-out port 82, the seedling feeding devices 81, . . . operate to move the seedlings downward by one row. Transfer to.

On the lower side of these planting sections 4, V center floats 90 and a pair of left and right side floats 91 and 91 are provided at the center, and grooves are formed on both sides of each of these floats to form grooves for seedling transplantation. Vessel 92. ... is installed. Each float 90, 91.91 has a chain case 72.91. ...
Float support attached to 93. The front part is pivoted to the lower end of the... so that it can move up and down. center float 90
A detection rod 94 for detecting vertical movement is attached to the front part of the sensor, and a hydraulic valve 95 for controlling the hydraulic cylinder 57 is driven based on the detection result of the detection rod. When the center float 90 moves upward, the hydraulic valve 95 moves in the direction in which the hydraulic cylinder 57 extends.
is driven, and as a result, the planting section 4 is raised. If the field level is low, the operation is the opposite of the above.

The fertilizer application device 5 includes a hopper 100 that stores fertilizer, a feeder 101 that feeds out the fertilizer in the hopper downward, and a fertilization pipe that guides the fertilizer fed from the feeder to the transplanting groove formed by the groove creator 92. 102. The hopper 100 is shared by two adjacent rows, each with one
A total of three sets of main bodies consisting of one hopper 100 and two feeders 101 and 101 are attached to an air tank 104 made of a square pipe horizontally installed on the link base frame 60,
When viewed from the side, it is disposed in a space between the steering wheel 21 and the seedling stand 75. Feeding roll 101 in each feeding device 101,...
a, . Further, a blower 107 is provided in the engine room, and this blower 107
and the air tank lO4 are connected by an air pipe 108, and the fertilization pipe 102. ... are attached with their starting ends opening into the air tank 104.

In this way, warm air in the engine room is transferred to the fertilizing pipe 102. By supplying the fertilizer to ...-, the distribution of the fertilizer within the pipe is improved, and it is effective to prevent the fertilizer from solidifying within the vibrator.

[Effects of the Invention] As explained above, the agricultural machine according to the present invention is provided with a rolling lock device that locks and releases rolling according to the rotation angle of the lower link with a small amount of deflection. These operations are now performed reliably.

[Brief explanation of drawings]

Fig. 1 is a side view of a riding fertilizing rice transplanter which is an embodiment of the present invention, Fig. 2 is a plan view thereof, Fig. 3 is a side view of main parts, and Fig. 4
The figure is a perspective view thereof. 5 to 7 are perspective views, side views, and perspective views of the main parts of different embodiments, respectively, and FIG. 8 is an explanatory diagram of the operation of the main parts shown in FIG. 7. l... Riding fertilizer application rice transplanter (agricultural machine), 2... This machine (
traveling vehicle body), 3... link device, 4... planting section, 5
...M Fertilization N, 6...Frame, 10...Engine, 11...Mission case, 41...Upper link, 42°42'...Lower link, 42a, 42a'.
...Lower link tip, 43.43'...Connection frame, 48
...Docking base, 49...Docking bait, 50.50'...Rolling shaft, 52, 52'
···roller.

Claims (1)

[Claims] (1) Comprising an upper link and a lower link that are vertically rotatably supported by the traveling vehicle body, and a connecting frame attached to the tips of these upper and lower links, the connecting frame is rotatably provided in the front-rear direction. In an agricultural machine in which a working machine part is attached to a rolling shaft, when the rotation angle of the lower link exceeds a certain level, a part of the lower link interferes with a part of the working machine part, and the working machine around the rolling shaft An agricultural machine characterized by being equipped with a rolling lock device that restricts the rolling movement of its parts.