JPH0221845Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a bonnet structure of a rice transplanter in which a preliminary seedling stand is provided above the bonnet.

The structure of the bonnet in such a rice transplanter requires a means for fixing the bonnet in the closed position. For example, if a fixing means using a set bolt, which is a conventional means, is used between the bonnet main body and the machine body, the bonnet main body The disadvantages are that the load of the spare seedlings may cause breakage, that it takes time to fix and unfix, and that opening and closing of the bonnet, such as engine maintenance and inspection, is troublesome.

In view of the above, an object of the present invention is to make the supporting structure of the spare seedling stand bonnet robust and to enable it to be fixed to and released from the body frame easily and quickly.

In order to achieve the above-mentioned purpose, the present invention consists of front and back frame members separated from each other on the left and right sides, which are connected at the front and rear by horizontal frame members, and a bonnet and a spare seedling stand are attached to the movable frame whose rear part is pivotally connected to the fuselage. The present invention is characterized in that a receiving member for elastically engaging and holding the horizontal frame member of the movable frame in the bonnet closed position is connected to the fuselage frame side.

The functions and effects of the present invention having the above characteristics are as follows.

<Function> Since the spare seedling stand and the bonnet are attached to the machine body via the movable frame, there is no need for a reinforcing structure for the bonnet, even though the weight of the spare seedling stand is directly attached to the bonnet. In this case, not only the weight of the bonnet but also the weight of the preliminary seedling stand are acting on the movable frame.
The focus is on the fact that not only the weight of the bonnet but also the weight of the spare seedling tray acts, and the downward swinging force of the movable frame is sufficient to suppress the vertical swinging of the movable frame due to machine vibration, etc. By configuring the movable frame to be elastically engaged and held by the receiving member in the bonnet closing position, the movable frame can be moved into the airframe with only the original downward swing for closing the bonnet. The fixing of the movable frame to the fuselage frame and the fixation of the movable frame to the fuselage frame, such as fixing the movable frame to the fuselage frame securely and releasing only the original upward swing of the movable frame to open the bonnet, The release operation is very easy.

Moreover, since the movable frame portion that is elastically engaged and held by the receiving member is the front sideways frame material, the movable frame is stably and reliably supported by the aircraft frame at both front and rear ends when the bonnet is closed. Although the movable frame can be reliably received by the resilient engagement of the receiving member, compared to the case where the movable frame is received at a portion of the movable frame other than the front sideways frame member, the receiving member is The elastic engagement force can be weakened. This can reduce the operating force required to swing the movable frame upward while disengaging it from the receiving member.

<Effects> Although the movable frame can be securely fixed in the bonnet closed position, the only operation required to open and close the bonnet is to swing the movable frame up and down to open and close the bonnet. Combined with the ease of operation, the bonnet can be opened and closed easily and quickly.

Hereinafter, embodiments of the configuration of the present invention will be described based on the drawings.

The transmission case 2 fixedly connected to the front engine 1 and the planting transmission case 4 for the rear planting device 3 are connected to a pipe frame with a front-rear posture that also serves as a transmission case that houses the transmission shaft to the planting device 3. A pair of left and right running wheels 7, 7 that can swing up and down, and these wheels 7, 7 are integrated into the fuselage frame F, which has a structure that is fixedly connected to the fuselage frame F through a connecting member 6 located on the lower side of the frame F. Hydraulic cylinder 8 that swings up and down
A bonnet 9, a spare seedling stand 10 located above the bonnet 9 and rotatable around the vertical axis a, a group of floats 10, and a steering handle 12 extending rearward are assembled. Attach it to form a walking rice transplanter.

The planting device 3 moves planting claws 3B corresponding to each pine seedling in conjunction with the horizontal reciprocation of the seedling stand 3A, which is tilted backwards and places a plurality of pine seedlings in parallel in the horizontal direction. By circulating up and down,
This is a well-known method in which a unit amount of seedlings are taken out from pine seedlings and planted, and a detailed explanation of its structure will be omitted.

The wheels 7, 7 are respectively supported by swinging free ends of swing arms 13, 13 which are pivotally connected to the mission case 2 so as to be able to swing vertically.

The swing arms 13, 13 also serve as a transmission case for the wheels 7, 7.

The hydraulic cylinder 8 is connected to a pair of left and right brackets 14, 14' that are erected on the transmission case 2.
The piston rod 8B of the cylinder case 8A is fitted and held at the protruding end of the piston rod 8B in a plate-shaped bracket 15 which is supported to be vertically swingable at the bottom end of the cylinder case 8A and is fixed to the pipe frame 5. has been done. A fuel tank 16 is installed between the upper ends of the pair of brackets 14, 14' and the plate-shaped bracket 15.

The means for linking the hydraulic cylinder 8 and the wheels 7, 7 is a suspension spring 1 at the end of the piston rod 8B in the hydraulic cylinder 8.
7, and a horizontal member 20 that is connected to the swing arms 13, 13 through rods 19, 19 at both left and right ends thereof.
are pivotably connected around the vertical axis b,
This is a means for moving the wheels 7, 7 up and down by moving the back and forth moving member 18 back and forth via the hydraulic cylinder 8, and linking the wheels 7, 7 in a state in which the wheels 7, 7 are swung oppositely by the swinging of the lateral member 20. P is when the heights of the frame F of the two wheels 7, 7 relative to the aircraft are the same,
This is a lock pin that can prevent the horizontal member 20 from swinging relative to the longitudinally moving member 18 and prevent the wheels 7, 7 from swinging in opposite directions. It is operated by

The bonnet 9 and the spare seedling stand 10 are attached to the planting mechanism case 4 by bolts 21, 21...
A pair of left and right plate-shaped stays 2 fixedly connected via
This movable frame 2 is attached to a movable frame 23 that is connected to the movable frame 2 and 22 so as to be vertically swingable around the rear end side.
The bonnet 9 is fixedly mounted so that it can be opened and closed by vertical swinging of the bonnet 3.

The movable frame 23 consists of a pair of left and right front-to-back frame members 23A, 23A, which are positioned in a parallel position at appropriate intervals in the left and right lateral directions, and horizontal frame members 23B, 23B' using pipes at their front and rear ends, respectively. The end portions of the horizontal frame members 23B and 23B' that protrude laterally outwardly from the front and rear frame members 23A and 23A have a small diameter. It is drawn and processed.

Then, this movable frame 23 is moved to the plate-shaped stay 2.
2, 22 in a vertically swingable manner, the small diameter ends of the rear horizontal frame member 23B' are used as attachment portions 23a, 23a, and the attachment portions 23a,
Plate-shaped stay 2 of the tapered part connected to 23a
The mounting portions 23a, 23a are inserted and held in the holes formed in the plate-shaped stays 22, 22 so as to be able to swing freely, in a state in which they are prevented from coming out by contact with the opposing surfaces of 2, 22, that is, in a state in which the left and right positions are restricted. It is a means to do so.

The means for fixing the bonnet 9 to the movable frame 23 is to attach the horizontal frame members 23B, 2 to the left and right side walls 9A, 9A of the bonnet 9.
A hole is formed through which both ends of the frame members 23B, 23B' are inserted, and bolts 24, 24, etc. are screwed into both ends of the frame members 23B, 23B' with both ends of the horizontal frame members 23B, 23B' inserted through the holes. hand,
The washers 25, 2 are attached by these bolts 24, 24...
5. This is a means for preventing removal through...

The means for attaching the preliminary seedling stand 10 to the movable frame 23 is to attach a cylindrical support shaft located on the vertical axis a to a frame 26 suspended between the front and rear frames 23A and 23A of the movable frame 23. 2
7 is erected so as to vertically penetrate through the top plate 9B of the bonnet 9, and a spare seedling stand 10 is placed on the upper end of this cylindrical support shaft 27 so as to be swingable around the vertical axis a, and , the support shaft 2 is attached to the preliminary seedling stand 10.
This is a means for fixing and connecting a cylindrical body 30 that is fitted onto the outside of the seedling stand 7 to prevent the preliminary seedling stand 10 from falling. Reference numeral 31 designates a rotation-locking pin of the preliminary seedling stand 10 that can be freely inserted into and removed from holes 32a and 32b formed on the opposing peripheral surface of the cylindrical body 30 and the support shaft 27; It is a coil spring that moves and biases in the insertion direction. 31A is an operating tool for the locking pin 31.

The means for fixing the movable frame 23 in the bonnet 9 closed position is to attach the front horizontal frame member 2 of the movable frame 23 to the plate-shaped bracket 15.
3B is a means for attaching a receiving portion 34 made of a leaf spring that elastically engages with the bonnet 9 via a bolt 34A, and a means for fixing the movable frame 23 in the bonnet 9 open position is the means for attaching the receiving portion 34 made of a leaf spring that elastically engages with the bonnet 9. With the upward swinging of the movable frame 23, the bonnet 9 is reversibly expanded from the bent position to the extended position, and beyond the extended position, the bonnet 9 is slightly bent in the opposite direction from the bent position. A pair of left and right bent links 35, 35 that provide tension support
It is a means of intervening. The receiving portion 34 is configured such that its mounting position can be adjusted up and down by making the bolt hole 34A a long hole.

FIG. 8 A, B, and C each show another embodiment,
In another embodiment shown in A, the upper inner peripheral surface portion 27a of the support shaft 27 is made into a Taber surface.
In another embodiment shown in B, the upper outer peripheral surface portion 27 of the support shaft 27 has a smaller upper end mounting surface area.
By making b a tapered surface, the area of the upper end mounting surface of the support shaft 27 is reduced.
By making both a and 27b tapered surfaces, the upper end mounting surface area of the support shaft 27 is reduced. When these are used, rotational resistance of the preliminary seedling stand 10 due to friction can be reduced.

[Brief explanation of drawings]

The drawings show an embodiment of the bonnet structure of the rice transplanter according to the present invention, and Fig. 1 is a side view of the rice transplanter, Fig. 2 is a partially cutaway side view of the main part, and Fig. 3 is a cross-sectional view of the main part. Plan view, Figures 4 and 5 are enlarged cross-sectional plan views of the main parts, Figure 6 is a longitudinal cross-sectional view of the main parts, Figure 7 is an enlarged longitudinal cross-sectional side view of the main parts, and Figures 8 A, B, and C are FIG. 2 is a vertical sectional view of main parts showing another embodiment. 23A...Front and back frame material, 23B, 23
B'... Horizontal frame material, 23... Movable frame, 9... Bonnet, 10... Spare seedling stand,
F... fuselage frame, 34... receiving part.

Claims (1)

[Claims for Utility Model Registration] 1. In a rice transplanter in which a spare seedling stand 10 is arranged on the upper side of the bonnet 9, front and rear facing frame members 23A, 23A spaced apart from each other on the left and right are replaced with horizontally facing frame members 23A and 23A at the front and rear thereof. 23B,
The bonnet 9 and the spare seedling stand 10 are attached to the movable frame 23 which is connected at the movable frame 23B and whose rear part is pivotally connected to the body, and the horizontal frame member 23B of the movable frame 23 is elastically engaged and held in the bonnet closed position. This is a bonnet structure of a rice transplanter in which a receiving member 34 is connected to the body frame F side. 2. The bonnet structure of a rice transplanter according to claim 1, wherein the receiving member 34 is comprised of a plate spring.