JPH047685Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" This invention is a rice transplanter that uses a planting claw to take out one seedling from a seedling table that moves back and forth from side to side and to plant it in a field. This invention relates to a seedling vertical feeding device that vertically feeds seedlings on a platform.

"Prior Art" Conventionally, as shown in Japanese Utility Model Application Laid-open No. 56-73227, there has been a technology that prevents the vertical feed shaft from rotating in any operation other than the vertical feed operation of seedlings.

"Problems to be Solved by the Invention" The above-mentioned prior art provides a friction plate and a friction spring at the end of the vertical feed shaft, and forces the friction plate against a bracket that supports the vertical feed shaft, so that the plate and the bracket are connected to each other. Since the rotation of the vertical feed shaft is regulated by frictional resistance, the braking force of the vertical feed shaft is likely to change due to muddy water adhering to the space between the friction plate and the bracket or the friction spring, or due to rust on these parts. There were problems in terms of functionality and handling, such as the need for a waterproof structure to prevent malfunctions in vertical feeding and the need for troublesome maintenance.

``Means for Solving the Problems'' However, the present invention is a seedling vertical feeding device of a rice transplanter that rotates a vertical feeding shaft installed on a seedling stand and feeding the seedlings in the removal direction with a predetermined rotational force or more. The inner side of the brake shaft, which is integrally connected to the shaft, is pivotally supported by the bifurcated inner receiving part of the bearing of the seedling stand, and a brake rubber is fitted onto the outer periphery of the outer end of the brake shaft, and the brake rubber is attached in the axial direction. A nut that is compressed by the brake shaft is screwed onto the outer end of the brake shaft, and the outer part of the brake shaft is rotatably supported by the bifurcated outer receiving part of the bearing via the brake rubber so as to be rotatable at a predetermined rotational force or more. This is a characteristic feature.

``Operation'' Therefore, since the brake rubber installed on the brake shaft bulges in a direction substantially perpendicular to the shaft core to generate rotational resistance, it is almost impossible for muddy water to enter between the brake rubber and the bearing. Somehow, there is no adhesion of rust, etc., and it is possible to prevent the rotation of the vertical feed shaft with more stable braking force than before, and the sealing function of the brake rubber eliminates the need for a waterproof structure, and it is also effective for removing mud and preventing rust. This eliminates the need for troublesome maintenance, and makes it easy to improve the vertical seedling feeding function and handling operability. In addition, since the brake shaft is supported at a predetermined position by the bifurcated inner receiving part of the bearing, the brake rubber is not biased. This can prevent loads from being applied, easily prevent uneven wear and deformation of the brake rubber, and easily simplify the brake rubber support structure and improve durability.

"Embodiment" An embodiment of the present invention will be described below in detail based on the drawings.

Fig. 1 is an explanatory diagram of the vertical feeding section, Fig. 2 is an overall side view of the rice transplanter, and Fig. 3 is a plan view of the same. 3 is the engine installed in the engine 2; 4 is the engine 2 installed in the engine 3;
5 is a transmission case connected to the rear end of the base frame 3; 6 is an axle case connected to both left and right rear ends of the transmission case 5; 7 and 8 are front and rear wheels for running in paddy fields; 9 is the driver's seat,
10 is a steering handle, and 11 is a spare seedling stand.

Further, reference numeral 12 in the figure is a planting section equipped with a seedling stand 13 for multi-row planting, a plurality of planting claws 14, etc. The planting is carried out in the planting case 17 through the take-out plate 15 and the guide rail 16, which supports the planting case 17 so as to be able to slide back and forth in the left and right directions, and through the planting arm 18 and the planting claw drive shaft 19, which are moved by a crank. Attach the claw 14. The planting case 17
A main float 20 for leveling the planting surface, which is a sliding body, and left and right side floats 21, 21 are installed below, and the planting section 12 is connected to the traveling section 1 via a three-point link mechanism 22 and a hydraulic cylinder 23. The front and rear wheels 7 and 8 are connected so as to be able to rise and fall, and the front and rear wheels 7 and 8 are driven and run at a substantially constant speed, and at the same time, one seedling is continuously placed by a planting claw 14 from a seedling platform 13 that slides back and forth from side to side. It is configured so that it can be taken out and used for planting seedlings in the field.

As shown in FIGS. 4 and 5, the seedling stand 13
A pair of upper and lower vertical feed shafts 24 are provided near the lower end of the slope of the lower surface.
25 are hung horizontally in parallel, and when the seedling platform 13 reaches the end of left-right movement, the pine seedlings on the upper surface of the seedling platform 13 are intermittently transferred to the lower seedling take-out section via a vertical feed transmission mechanism such as a vertical feed drive cam and a follower cam. Roller-shaped vertical feed foils 26 and 27, which are vertical feed members to be fed, are fixedly supported on the vertical feed shafts 24 and 25 at approximately equal intervals, and the foils 26 and 27 are fed through holes 28 formed in the seedling mounting table 13. , 27 are configured to protrude above the upper surface of the seedling stand 13 and come into pressure contact with the lower surface of the pine seedling.

The foils 26 and 27 are formed into cylindrical bodies having a width W, and the central circumferential portion is formed to have a slightly smaller diameter than both left and right ends. In addition, the vertical feed shafts 24, 2
Pulley shafts 29 and 30 are provided protruding from one end of 5, respectively, and these pulley shafts 29 and 30 are connected to pulleys 31 and 3.
2 and a belt 33, so that when the shaft 24 rotates, the shaft 25 also rotates at the same time through a vertical feed transmission mechanism.

The pulley shafts 29, 30 are vertical feed bearings 34, 3.
These bearings 34 and 35 are supported by a bearing stand 36 which is a single reinforcing base, and as shown in FIG. The bearing pedestal 36 is integrally fixed via 39.

Further, a transmission cover 40 covering the lower parts of the pulleys 31, 32 and the belt 33 is removably fixed to a frame 41 which is integrally attached to the bearing stand 36 via bolts 42.

Furthermore, as shown in FIG. 7, the lower vertical feed shaft 24
The intermediate portion of the holder is supported by a vertical feed bearing 43, and the bearing 4 is attached to a rail body 44, which is a guide member that guides and supports the seedling mounting table 13 on the seedling take-out plate 15.
3 is fixed via a bolt 45, and the upper surface 43b of the bearing is fixed to the lower surface of the seedling stand 13 via a bolt 45, so that the bearing 43 is integrated with both the seedling stand 13 and the rail body 44. By fixing them, they are constructed so as to improve their mutual strength.

On the other hand, as shown in FIG. 8, a brake shaft 47 is provided protrudingly from the other end of the lower vertical feed shaft 24 via a pin 46.
A washer 4 is attached to the outer end threaded shaft portion 47a of the brake shaft 47.
Brake rubber 5 which is a brake elastic member whose mounting width can be adjusted via 8, 49 and a lock nut 50.
The brake shaft 47 and the brake rubber 51 are rotatably supported by a bearing 52 which is fixed to the rim portion 37 of the seedling stand 13 via a bolt 39. After the feeding operation is completed, the friction between the brake rubber 51 and the bearing 52 is used to keep the shaft 24 from rotating.
By varying the attachment width of the brake rubber 51 by operating the lock nut 50, the frictional force between the brake rubber 51 and the bearing 52 is adjusted to be large or small as appropriate. As is clear from the above, in the seedling vertical feeding device of the rice transplanter that rotates the vertical feeding shaft 24 provided on the seedling platform 13 and feeding the seedlings in the removal direction with a predetermined rotational force or more, the brake is integrally connected to the vertical feeding shaft 24. Place the inner part of the shaft 47 on the seedling stand 1
The brake rubber 5 is mounted on the outer periphery of the outer end of the brake shaft 47.
A nut 50 into which the brake rubber 51 is fitted and which compresses the brake rubber 51 in the axial direction is screwed onto the outer end of the brake shaft 47.
The outer portion of the brake shaft 47 is rotatably supported by the bifurcated outer receiving portion of the bearing 52 via a predetermined torque or more.

By the way, as shown in FIGS. 2 and 9, a battery 53 mounted on the front part of the base frame 3
The battery case 56 is housed in a battery case 56 having a handle 54 and a hook 55, and the hook 55 of the battery case 56 which houses the battery 53 is removably supported by the support member 57 of the frame 3, and the battery case 56 is removably supported during the annual rice planting season. When the battery 53 needs to be charged, it is configured so that it can be easily removed and carried to a charging place for charging.

The present embodiment is constructed as described above, and when the seedling platform 13 reaches the end of left and right movement, the lower vertical feed shaft 2
4 rotates, the upper vertical feed shaft 25 is also rotated at the same time, and the vertical feed wheels 2 are provided in two stages in the vertical direction.
Even with 6 and 27 rotations, the seedling pine on the seedling table 13 is smoothly vertically fed to the lower end side of the slope. After the vertical feeding of the seedling pine is completed, the rotation of the shaft 24 is reliably stopped and maintained by the frictional force between the brake rubber 51 and the bearing 52, and the planting claws 14 are then used to accurately feed each plant. While the seedlings are being taken out, the rubber 51 is worn out and the bearing 5
When the frictional force between the two parts decreases, the mounting width can be adjusted to a smaller value by operating the lock nut 50, thereby maintaining the frictional force constant at the reference state.

Further, as the vertical feed bearing 43 is fixed to both the lower surface of the seedling platform 13 and the rail body 44, the mutual reinforcing effect between the seedling platform 13 and the rail body 44 is promoted.
Moreover, since the bearing 43 itself is positioned on the rail body 44, even if the seedling stand 13 is made of resin that is easily deformed, the position of the bearing 43 does not change, and therefore the position of the follower cam remains constant. This suppresses variations in the vertical feed amount.

"Effect of the invention" As is clear from the above embodiments, the present invention has a vertical feed shaft 2 which is provided on the seedling stand 13 and which sends the seedlings in the direction of taking out the seedlings.
In a seedling vertical feeding device of a rice transplanter which rotates a rice transplanter 4 at a predetermined rotational force or more, the inner side of a brake shaft 47 which is integrally connected to the vertical feeding shaft 24 is pivotally supported by a bifurcated inner receiving part of a bearing 52 of a seedling platform 13. , the brake shaft 4
7 Fit the brake rubber 51 on the outer periphery of the outer end,
Further, a nut 50 for compressing the brake rubber 51 in the axial direction is screwed onto the outer end of the brake shaft 47, and the outer part of the brake shaft 47 is connected to the bifurcated outer receiving part of the bearing 52 via the brake rubber 51. The brake rubber 51 is rotatably supported at a predetermined rotational force or more, and generates rotational resistance by utilizing the fact that the brake rubber 51 provided on the brake shaft 47 bulges in a direction substantially perpendicular to the shaft core. There is almost no chance of muddy water entering between the bearing 52 and the bearing 52.
In addition, there is no adhesion of rust, etc., and the rotation of the vertical feed shaft 24 can be prevented with a more stable braking force than before.Furthermore, the sealing function of the brake rubber 51 eliminates the need for a waterproof structure, and the hassle of removing mud and preventing rust. The brake shaft 47 is supported at a predetermined position by the bifurcated inner receiving part of the bearing 52, so that the brake shaft 47 is supported at a predetermined position by the fork-shaped inner receiving part of the bearing 52. 51, can easily prevent uneven wear and deformation of the brake rubber 51, and can easily simplify the brake rubber 51 support structure and improve durability. It is.

[Brief explanation of the drawing]

Fig. 1 is an explanatory plan view of a vertical feeding section showing an embodiment of the present invention, Fig. 2 is an overall side view of the rice transplanter, Fig. 3 is a plan view of the same, and Fig. 4 is an explanatory side view of Fig. 1. , 5th
The figure is an explanatory front view of the same, Figure 6 is a partially enlarged view of the previous figure,
FIG. 7 is a perspective view taken along the same line, FIG. 8 is an enlarged view of the same portion, and FIG. 9 is a perspective view of the battery case. 13... Seedling stand, 24... Vertical feed shaft, 51...
Brake elastic member, 52... Vertical feed bearing.

Claims (1)

[Scope of utility model registration request] In a seedling vertical feeding device of a rice transplanter that rotates a vertical feeding shaft 24 provided on a seedling loading table 13 and feeding the seedlings in the removal direction with a predetermined rotational force or more, the inner side of the brake shaft 47 integrally connected to the vertical feeding shaft 24 is used for loading seedlings. A nut 50 is rotatably supported on the bifurcated inner receiving part of a bearing 52 of the stand 13, a brake rubber 51 is fitted on the outer periphery of the outer end of the brake shaft 47, and a nut 50 is compressed in the axial direction. The outer end of the brake shaft 47 is screwed onto the outer end of the shaft 47, and the outer portion of the brake shaft 47 is rotatably supported by the bifurcated outer receiving portion of the bearing 52 via the brake rubber 51 so as to be rotatable at a predetermined rotational force or more. A vertical seedling feeding device for rice transplanters.