JPH052286B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a seedling bed frame protection device for a rice transplanter.

[Prior art] A seedling stand is provided on the upper part of the rice transplanter frame in an inclined manner so that the front side is on top. The rice transplanter is equipped with a seedling receiving frame for receiving the seedlings, and a seedling planting tool for dividing and taking out the seedlings from the lower end of the seedling platform and planting them in the field, and a float is provided at the bottom of the rice transplanter frame to slide over the field surface. A rice transplanter is known in which a rice transplanter is connected to a tractor body. In this type of rice transplanter, the seedbed support frame protrudes to the side of the machine and is made of relatively weak materials such as aluminum to provide corrosion resistance, so it may come into contact with obstacles such as rocks during operation. They were often damaged or deformed.

[Problems to be Solved by the Invention] In view of the above circumstances, the present invention provides a protection device with a simple structure that can effectively protect a seedbed receiving frame.

[Means for Solving the Problems] In other words, the seedling bed frame protection device according to the present invention includes a seedling platform provided on the top of the rice transplanter frame with the front side facing upward, and a seedling platform provided at the rear of the seedling platform. The rice transplanter frame is provided with a seedbed receiving frame that is provided at the lower end position and receives the lower end of the seedling bed on the seedling platform, and a seedling planting tool that divides and takes out the seedlings from the lower end of the seedling platform and plants them in the field. In a rice transplanter in which a rice transplanter is connected to a tractor body, the rice transplanter is equipped with a float that slides over the field on the lower side, and a hollow rotating rod for suspending the float and adjusting the vertical position of the float is placed above the float. The present invention is characterized in that a protection rod is provided laterally and projects outward from the side end of the seedbed receiving frame, and its base is slidably fitted into the hollow rotating rod.

[Embodiment] The embodiment shown in the drawings will be described below. FIGS. 1 and 2 are a side view and a plan view showing an example of a rice transplanter according to the present invention. 1 is constructed by connecting a rice transplanting device 4 to the rear part of a riding-type towing vehicle body 2 via a parallel link device 3.

An engine 5 is installed at the front of the towing vehicle body 2,
A bonnet 6 covers the engine 5. A transmission case 7 is provided at the rear of the engine 5, and a pair of left and right chain cases 8, 8 that protrude rearward are provided at the rear of the transmission case 7. Rear wheels 9, which are wheels, are each pivotally supported. A pair of left and right front wheels 10, 10 are provided at the front part of the machine body so as to be able to change direction, and a step member 11 is provided above the front wheels so as to surround the front part of the machine body.

The parallel link device 3 includes front and rear vertical members 15, 16.
It consists of one upper link 17 and a pair of left and right lower links 19, 19, and the respective members are connected to each other with pins. A downward protrusion 20 is integrally provided on the upper link 17, and this protrusion 20 is connected to the mission case 7 by a hydraulic cylinder 22 of a lifting device 21. The lower end of the front vertical member 15 is pivotally connected to a connecting pipe 28 that connects the left and right chain cases 8, 8. A rice transplanting device 4 is connected to the rear end of the parallel link device 3 via a rolling shaft 25. By expanding and contracting the hydraulic cylinder 22 of the lifting device 21, this rice transplanting device 4
can be moved up and down. Further, the rice transplanting device 4 can freely rotate left and right by rotating the rolling shaft 25. In the figure, 26 is a driver's seat, and the seat frame 2 is U-shaped in plan view.
7.

The rice transplanting device 4 is a rice transplanter frame 3 that has a built-in transmission device.
0, and a seedling stand 32 is provided above the rice transplanter frame 30.
is provided at an angle with the front side facing upward. The seedling stand 32 is provided so as to be able to reciprocate from side to side along a guide rail 34 provided at the upper end of the support 33. The seedling stand 32 is divided into four sections by a partition plate 36, and a seedling bed receiving frame 37 having a receiving part 37a with an L-shaped cross section is provided at the lower end and extending in the left-right direction. The seedbed receiving frame 37 is used to prevent the seedling placed on the seedling platform 32 from sliding down, and is fixed to the rice transplanter frame 30 as shown in FIG. In order to cover the seedling table 32, it protrudes to the side of the body by an amount corresponding to the amount of movement of the seedling table 32. 40 is an arm of a lateral movement device provided in the rice transplanter frame 30, and 41 is a guide member that guides the transfer of the seedling platform 32.

At the rear of the rice transplanter frame 30, there is a seedling planting claw 4 at the tip.
3, and a planting device 47 having a swing crank 45 that drives the seedling planting tool 44 so that its tip portion swings up and down in an elliptical trajectory. It is being The seedbed receiving frame 37 has notches 49, 49, at the position where the seedling planting tool 44 is arranged.
...... has been established, and 50 flat seedbeds with soil are provided.
The seedling planting claw 43, which has received one seedling 51 from the seedling, is configured to descend through this notch 49.

On the lower side of the rice transplanter frame 30, a central float 55 and a pair of left and right side floats 56, 56 are provided which level the ground while sliding over the field. These floats 55 and 56 are support arms 61 and 6 of a hollow rotation rod 60 rotatably supported on the rice transplanter frame 30.
1, . Rotating rod 60
As shown in FIG. 4, there is a vertical position adjustment lever 6.
3 is integrally provided, and by rotating the lever up and down along the groove 65 of the guide plate 64 and fixing it, the float 5 is attached to the rice transplanter frame 30.
5, 56 are configured so that the vertical positions thereof can be adjusted. Note that the floats 55 and 56 can be rotated up and down about the pivot point S.

The front part of the central float 55, the rice transplanter, and the rice transplanter frame 30
A hydraulic valve 66 for vertical position detection is provided between the two. When the central float 56 moves upward to push up the spool of the hydraulic valve 66, the piston rod 22 of the hydraulic cylinder 22 protrudes, and when the central float 55 rotates downward, the piston rod 22a retracts. .

The rice transplanting device 4 is powered by the transmission case 7.
The power is transmitted to a power transmission device inside the rice transplanter frame 30 via a power transmission device including a power transmission shaft 67, a universal joint 68, etc. that protrudes rearward from the rice transplanter frame 30.

Next, this rice transplanting device 4 includes the seedbed receiving frame 3.
A protection rod 7 that is located in front of 7 and protects the seedbed receiving frame.
0 is set. The protection rod 70 is formed into a bent U-shape in plan view, and a mounting end 70a, which is the base thereof, is slidably fitted into the end of the hollow rotary rod 60 for adjusting the vertical position of the float. It is fixed with a set bolt 71. The protection rod 70 is provided below the seedbed receiving frame 37, but as shown in FIG. 5, the side end portion 70b is slightly raised when viewed from the rear and approaches the lower end of the seedbed receiving frame 37. Although this arrangement is more effective in protecting the seedbed receiving frame 37, it may also be simply provided horizontally. Further, the protection rod 70 has a side end 70b curved in an arc shape protruding outward from the side end of the seedbed receiving frame 37, and by loosening the set bolt 71, the position of the side end 70b can be adjusted as appropriate. It is configured to be adjustable. The tip portion 70c of the protection rod 70, which is folded back toward the center of the body so as to be substantially parallel to the seedbed receiving frame 37, is inserted inside the side end portion of the seedbed receiving frame 37. As described above, if the protruding length of the protection rod 70 is configured to be adjusted and fixed as appropriate, it can be retracted out of the way when not in use, which is convenient in practice. . In addition, the protective rod 7
It is preferable for safety to position the folded end portion 70c of the seedbed holder frame 37 inside the end portion of the seedbed receiving frame 37 as described above, since this prevents hands and feet from being injured during work. This tip 70
c is, for example, when changing to 5-row planting,
When widening the movement range of the seedling stand 32, it is recommended to fold it back sufficiently deeply so that it is located inside the auxiliary seedling bed receiving frame 75 that is added to the side end of the original seedling bed receiving frame 37, as shown in FIG. preferable. Furthermore, if the side end 70b of the protection rod 70 is curved so as to be on one circular arc, when this part hits a ridge or the like, the contact length will be short and the aircraft will be able to rotate. This is convenient because the amount of contact does not increase when the user tries to move away from the ridge. When the vertical position adjustment lever 63 is operated to rotate the rotation rod 60, the protection rod 70 also rotates, but it is provided so that it does not come into contact with the seedbed receiving frame 37 even at the highest position.

[Effects of the Invention] This rice transplanting device is provided with a protection rod 70 that protrudes outward from the seedbed receiving frame 37 at the lower front side of the seedbed receiving frame 37 that projects to the side of the machine body.
It is now possible to effectively protect the seedbed receiving frame 37, which is easily damaged by stones, plants, etc. present in the field during work. Since the protection rod 70 is attached using a rotation rod 60 provided in the lateral direction of the fuselage in order to adjust the vertical position of the floats 55 and 56, a special support member for supporting the protection rod 70 is used. It is compact in appearance, simple in structure, and inexpensive. Since the rotary rod is hollow, it is lightweight, which is preferable for improving performance. Furthermore, since the protection rod 70 is supported by slidably fitting the base into the hollow rotation rod, it functions as a plug that closes the openings at both ends of the hollow rotation rod. It is now possible to adjust the amount of protrusion as appropriate, and when not in use, it can be retracted out of the way with a simple operation.

[Brief explanation of the drawing]

Figures 1 and 2 are a side view and a plan view showing an example of a rice transplanter according to the present invention, Figure 3 is a sectional view of a seedling stand, Figures 4a and b, Figures 5 and 6.
The figure is an explanatory diagram of the main part. 1... Rice transplanter, 2... Traction vehicle body, 3... Parallel link device, 4... Rice transplanting device, 7... Mission case, 8... Chain case, 21... Lifting device, 30... Rice transplanter frame , 32... Seedling stand, 37...
... Seedbed receiving frame, 44 ... Seedling planting tool, 55 ... Center float, 45 ... Side float, 60 ... Rotating rod, 70 ... Protection rod.

Claims (1)

[Claims] 1. A seedling stand installed on the top of the rice transplanter frame at an angle with the front side facing upward, and a seedling bed support frame installed at the rear lower end position of the seedling stand to receive the lower end of the seedling bed on the seedling stand. and a rice transplanting device, which is equipped with a seedling planting tool for dividing and taking out seedlings from the lower end of the seedling platform and planting them in the field, and a float that slides over the field surface is provided at the bottom of the rice transplanter frame. In a rice transplanter connected to a towing vehicle body, a hollow rotating rod for suspending the float and adjusting the vertical position of the float is provided horizontally above the float, and protrudes outward from a side end of the seedbed receiving frame. 1. A seedling support frame protection device for a rice transplanter, characterized in that a protection rod is provided with its base slidably fitted into the hollow rotating rod.