JPS602731Y2 - Auxiliary seedling feeding device for riding rice transplanters - Google Patents

Description

[Detailed description of the invention] The present invention tilts the auxiliary seedling table mounted on the traveling body of the riding rice transplanter up and down to supply clustered seedlings to the main seedling table of the seedling planting device installed on the traveling body. This relates to an auxiliary seedling feeding device in a riding rice transplanter.

Generally, the traveling body of a riding rice transplanter is equipped with an auxiliary seedling platform that supplies clustered seedlings to the main seedling platform of the seedling planting device, which is installed on one side of the traveling vehicle so that it can be raised and lowered. The auxiliary seedling mounting table is tilted up and down via a hydraulic cylinder that extends and contracts in order to automatically slide down and feed the seedlings to the raised main seedling mounting table of the seedling planting device.

On the other hand, the group seedlings placed on the auxiliary seedling table mentioned above have good or bad rooting, and for this reason, if the group seedlings descend from the auxiliary seedling table at a fast rate, some of the grouped seedlings have good rooting. In this case, neither the remaining seedlings on the main seedling stand nor the supplied seedlings will collapse, but in the case of clustered seedlings with poor rooting, the roots of the remaining seedlings or supplied seedlings will collapse and the normal condition will not occur. There was a fear that it would be impossible to carry out seedling planting work.

However, conventionally, the hydraulic cylinder that tilts the auxiliary seedling table up and down has been designed to expand and contract by operating an operating lever that opens and closes the hydraulic supply valve of the hydraulic cylinder, so it is not possible to freely control the expansion and contraction speed. Therefore, in the case of a hydraulic cylinder that expands and contracts quickly, it is necessary to reduce the expansion and contraction speed of the hydraulic cylinder by operating the operating lever so that the hydraulic pressure supply valve is half open when the seedlings are in clusters with poor rooting. This has the disadvantage that it is difficult for beginners to operate it because it requires a lot of skill to operate and is complicated to operate.

In addition, in the case of a hydraulic cylinder with a slow expansion and contraction speed, when using grouped seedlings with good rooting, there is a disadvantage that the feeding time of grouped seedlings becomes longer and the work efficiency decreases, which is not preferable in any case. Ta.

The present invention was devised in order to eliminate these drawbacks in view of the above-mentioned actual situation, and the auxiliary seedling supply device provided on the traveling device is expanded and contracted by hydraulic pressure supplied through a hydraulic supply valve. A hydraulic cylinder is formed so as to be tiltable up and down to supply the group of seedlings to the main seedling mounting table of the seedling planting device. Through a mechanism,
By configuring the system to freely adjust the tilting speed of the auxiliary seedling mounting table, the tilting speed of the auxiliary seedling mounting table can be adjusted depending on the quality of rooting of the group of seedlings by adjusting the tilting speed of the auxiliary seedling mounting table by installing an intervening device between the hydraulic cylinder and the hydraulic supply valve. It can be freely adjusted by the hydraulic adjustment mechanism,
It is possible to constantly feed the group of seedlings on the auxiliary seedling table to the main seedling table at the optimum speed, and as a result, even beginners can easily handle it without any complicated or difficult operations. It is an object of the present invention to provide an auxiliary seedling feeding device for a riding rice transplanter that can improve work efficiency.

The structure of the present invention will be described with reference to one embodiment shown in the drawings. Reference numeral 1 denotes a traveling body of a riding rice transplanter, which is equipped with a handle 2 and a driver's seat 3, or approximately at the center thereof.

Reference numeral 4 denotes a seedling planting device which is installed at the rear of the traveling body 1 so as to be able to rise and fall freely, and includes a seedling planting mechanism similar to the conventional one, and a seedling planting device 4 that is inclined backward and downward in order to supply collective seedlings to the seedling planting mechanism. It is constructed by being equipped with a main seedling mounting table 5, a float 6, etc.

7 is a support frame fixed to the rear of the driver's seat 3 of the traveling body 1; 8 is a guide frame that together with the support frame 7 constitutes a frame for supporting an auxiliary seedling mounting table, which will be described later; 9 is a support frame fixed to the rear side of the guide frame 8; The lifting frame 9 is a lifting frame that moves up and down with a hydraulic cylinder 10.
It is configured to move up and down freely along the guide frame 9.

Reference numeral 11 indicates a lower swing arm whose base end is pivoted near the upper end of the guide frame 8, and reference numeral 12 indicates an upper swing arm whose base end is pivoted near the upper end of the elevating frame 9.

The intermediate portion of the lower swing arm 11 and the support frame are connected via a hydraulic cylinder 13 and a return spring 14.

Reference numerals 15 and 16 refer to pipe members extending in the left-right direction fixed to the tips of the respective swing arms 11 and 12; 17 and 18 refer to support rods extending in the left-right direction fixed to the middle and upper ends of the lifting frame 9; It is.

When clips 21 fixed to the rear surfaces of the base ends of the upper and lower auxiliary seedling mounting stands 19 and 20 are rotatably and detachably engaged with each of the pipe materials 15 and 16, the support rods 17 and 16 are connected to the support rods 17 and 16, respectively. The tips of the auxiliary seedling mounting tables 19 and 20 are slidably placed on the auxiliary seedling supplying device 2 , respectively.
1 is configured.

On the other hand, FIG. 3 shows a hydraulic pressure supply circuit diagram installed in the traveling machine body 1 including the auxiliary seedling supply device 21. A hydraulic supply valve 23 for a swinging arm connected to a hydraulic cylinder 13 that swings a hydraulic cylinder 13, a hydraulic supply valve 24 for a lifting frame connected to a hydraulic cylinder 10 that moves up and down a lifting frame 9, and a seedling planting device 4. The oil pressure is supplied in series to a hydraulic pressure supply pulse 26 for the seedling planting device, which is connected to a hydraulic cylinder 25 that moves up and down.

A hydraulic pressure regulating valve 27 is interposed between the hydraulic pressure supply valve 23 for the swing arm 11 and the hydraulic pressure path of the hydraulic cylinder 13, and the operating lever 2 of the hydraulic pressure regulating valve 27
By operating 7a, the hydraulic pressure to the hydraulic cylinder 13 can be freely adjusted.

In the figure, 28 is the operating lever of the hydraulic pressure supply valve 23 for the swing arm, 28a is the trigger for returning the hydraulic pressure supply valve 23 to the position where it does not normally supply pressure oil to the hydraulic cylinder 13, and 29 is the lever for the lifting frame. The operating lever 29a of the hydraulic supply valve 24 is a trigger for normally returning the hydraulic supply valve 24 to a neutral position, 30 is an operating lever of the hydraulic supply valve 26 for the seedling planting device, and 31 is a relief valve.

Next, the operation of the present invention constructed as described above will be explained.

When planting seedlings, each auxiliary seedling table 19, 20 is loaded with a group of seedlings, and the main seedling table 5 is also loaded with grouped seedlings, and the seedlings are planted to the extent that the float 6 slides into contact with the rice field. When the attached device 4 is lowered and the traveling body 1 is made to travel,
The seedlings on the main seedling mounting table 5 are sequentially taken out for each unit planting seedling by a planting rod equipped in the seedling planting device 4 and planted on the rice field.

When the seedling planting work progresses and the number of seedlings on the main seedling platform 5 decreases to a predetermined amount, the main seedling platform 5 is replenished with grouped seedlings, but in this case, first the traveling machine 1 is stopped. At the same time, the seedling planting operation is stopped, the horizontal movement position of the main seedling mounting table 5 is stopped at the same phase position as the auxiliary seedling placing tables 19 and 20, and the seedling planting device 4 is moved to the highest position by operating the operating lever 30. When the hydraulic cylinder 13 is extended by operating the operating lever 28 after raising it to this position, the hydraulic cylinder 13
With the extension of , the lower swing arm 11 stands up and swings about the pivot point with the guide frame 8 .

Accordingly, the lower auxiliary seedling mounting table 19 gradually tilts backward using the support rod 17 as a fulcrum and slides rearward using the support rod 17 as a guide.

Then, the tip (slanted lower end) of the auxiliary seedling placing table 19 overlaps the upper end of the main seedling placing table 5, and the main seedling placing table 5 tilts further backward using the upper surface of the main seedling placing table 5 as a guide. When the seedlings are slid upwardly, the clustered seedlings on the lower auxiliary seedling table 19 are slid down and supplied onto the main seedling table 5 by their own weight.

After that, when the operating lever 28 is released, the hydraulic pressure supply valve 23 for the swinging arm is switched by the bullet 28a, the hydraulic cylinder 13 is shortened by the restoring force of the return spring 14, and the lower auxiliary seedling table 19 is moved in the opposite direction. It returns to its original position while moving.

Then, when the seedling planting work is resumed and the number of seedlings on the main seedling mounting table 5 decreases to a predetermined amount, the seedling planting device 4
is raised to feed the group of seedlings to the main seedling mounting table 5. In this case, the operating lever 29 is operated to raise the hydraulic cylinder 1.
0 is shortened and the lifting frame 9 is lowered along the guide frame 8, the upper auxiliary seedling mounting table 20 is lowered and the lower surface of the tip of the upper swinging arm 12 is brought into contact with the tip of the lower swinging arm 11. come into contact with

In this state, when the hydraulic cylinder 13 is extended as described above, the upper swinging arm 12 is pushed up via the lower swinging arm and gradually rises, and the main seedling mounting table is tilted in the same way as the lower auxiliary seedling mounting table 19. The grouped seedlings will be fed by sliding down onto the top of the container.

By the way, the supply from the auxiliary seedling mounting tables 19, 20 to the main seedling mounting table 5 is performed by extending the hydraulic cylinder 13, and the extension speed of the hydraulic cylinder 13 is determined by operating the hydraulic control valve 27 with the operating lever 27a. It can be changed freely by adjusting the hydraulic pressure supply amount.
When supplying grouped seedlings with good rooting, even if the hydraulic pressure supply amount is increased, the extension speed of the hydraulic cylinder 13 is increased, and the tilting speed of the auxiliary seedling mounting tables 19 and 20 is increased, the grouped seedlings will not take root. The seedlings can be slid down and accommodated on the main seedling mounting table 5 without collapsing, and work efficiency can be improved.

On the other hand, when supplying grouped seedlings with poor rooting, adjust the operating lever 27a to slow down the extension speed of the hydraulic cylinder 13, slow down the inclination speed of the auxiliary seedling mounting table 19, 20, and place the main seedlings on the seedlings. If the seedlings are slowly slid down onto the placing stand 5, the grouped seedlings can be reliably accommodated without their roots collapsing, so that seedlings can be smoothly replenished, and normal seedling planting work will not be impaired by the roots collapsing.

In short, the present invention has a seedling planting device mounted on a traveling machine so that it can be raised and lowered, and an auxiliary seedling mounting table comprising an auxiliary seedling mounting table on which grouped seedlings to be supplied are placed on a main seedling mounting table of the seedling planting device. In a riding rice transplanter equipped with a feeding device, the auxiliary seedling mounting table is formed to be vertically tiltable via a hydraulic cylinder that expands and contracts by hydraulic pressure supplied through a hydraulic pressure supply valve, and It is configured to feed the grouped seedlings by sliding down, and a hydraulic adjustment mechanism is interposed between the hydraulic path between the hydraulic cylinder and the hydraulic supply valve to freely adjust the tilting speed of the auxiliary seedling mounting table. Therefore, the tilting speed of the auxiliary seedling mounting table can be adjusted depending on the quality of the rooting of grouped seedlings placed on the auxiliary seedling mounting table or the main seedling mounting table.
It can be freely adjusted by the hydraulic adjustment mechanism interposed between the hydraulic cylinder and the hydraulic supply valve, and therefore the main seedlings can be placed on the auxiliary seedling mounting table at the optimum speed suitable for grouped seedlings without root collapse. It is possible to cause the supply to slide down to the placing stand, and thereby,
It does not require any complicated or difficult operations and can be handled easily and reliably even by beginners, and it has extremely useful practical effects such as improving work efficiency.

[Brief explanation of the drawing]

The drawings show an embodiment of the auxiliary seedling feeding device in a riding rice transplanter according to the present invention, in which FIG. 1 is an overall side view of the riding rice transplanter, FIG. 2 is an enlarged side view of the same essential parts, FIG. 3 is a hydraulic path diagram. In the figure, 1 is a traveling machine, 4 is a seedling planting device, 5 is a main seedling mounting table, 13 is a hydraulic cylinder, 19 and 20 are auxiliary seedling placing tables,
21 is an auxiliary seedling feeding device, 23 is a hydraulic pressure supply valve for the swing arm, and 27 is a hydraulic control valve.

Claims (1)

[Scope of utility model registration request] A riding rice transplanter equipped with an auxiliary seedling supply device consisting of a seedling planting device mounted on a traveling machine body so as to be able to rise and fall freely, and an auxiliary seedling mounting table on which collective seedlings to be supplied are placed on the main seedling mounting table of the seedling planting device. In this method, the auxiliary seedling mounting table is formed to be tiltable up and down via a hydraulic cylinder that expands and contracts with hydraulic pressure supplied via a hydraulic pressure supply valve, and bark is applied to feed the group of seedlings by sliding them onto the main seedling mounting table. At the same time, a hydraulic pressure adjustment mechanism is interposed between the hydraulic path of the hydraulic cylinder and the hydraulic supply valve,
An auxiliary seedling feeding device for a riding rice transplanter, characterized in that the auxiliary seedling mounting table has a bark so that the tilting speed can be freely adjusted.