JPH0448658Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to a soil covering device for a seeding machine, and is intended to obtain an appropriate amount of soil covering even when the soil is hard.

(Prior art) Generally, a seeding machine includes a furrower that forms a seeding furrow,
It is equipped with a seeding device that feeds and sows seeds into a seeding groove, and a soil covering member that covers the sown seeds with soil.

Since seeds are required to be sown to a certain depth, a certain appropriate amount of soil is required regardless of whether the soil is soft or hard. Therefore, even if the soil is hard, it is necessary for the soil covering member to dig into the soil and obtain a sufficient amount of soil covering. For this reason, in the past, the soil covering member was made to be able to swing up and down, so that the soil covering member's own weight would increase the amount of digging into the soil.

(Problem that the invention aims to solve) In fields where the soil is hard, there is a problem that the soil covering member cannot penetrate into the soil sufficiently by its own weight, and an appropriate amount of soil cannot be obtained. Ta.

The present invention aims to solve the above problems.

(Means for Solving the Problems) The technical measures taken by the present invention to solve the problems of the prior art are characterized by the fact that a mobile body 1 having a handle 6 is equipped with a float that slides over a paddy field. 8 is provided, and a furrower 14 for forming a seeding groove is provided on both the left and right sides of the float 8, and the base of the soil covering member 16 that covers the seeds sown in the seeding groove is connected to the float 8 via a horizontal shaft 37. In this seeding machine, the bases of the left and right soil covering members 16 are connected by a connecting member 39 that crosses above the float 8, and the soil covering member is brought into contact with this connecting member 39 side. A stopper 47 for regulating the lower limit position of the earth covering member 16 is provided on the float 8, and an elastic member 40 connected to the connecting member 39 and urging the earth covering member 16 in the ground direction is provided above the float 8. An operating lever 42 that is interlocked with the member 40 and adjusts the biasing force of the elastic member 40 is provided near the grip portion of the handle 6.

(Function) By increasing the biasing force of the elastic member 40 on the soil covering member 16 in fields with hard soil, and decreasing the biasing force in fields with soft soil, the soil of the soil covering member 16 is adjusted according to the softness of the soil. The amount of biting into can be changed.

(Example) Hereinafter, an example in which the present invention is applied to a direct sowing machine in flooded soil will be described based on the drawings.
has a mobile body 2 for traveling in rice fields, and the body 2 includes an engine 3, a transmission case 4, and a pair of transmission cases 5 disposed on the left and right sides of the transmission case 4.
Consists of etc.

A handle 6 extends rearward from the fuselage 2, and a pair of left and right drive wheels 7 are connected via a transmission case 5.
The vertical position can be adjusted freely.

8 is a float, which is attached to the lower abdomen of the fuselage 2.

A plurality of seeding units 9 are arranged at equal intervals in the left and right direction behind the mobile body 2. Each seeding unit 9 includes a seeding device 10, a float 12, a pair of left and right furrowers 14, a pair of left and right first soil covering members 15,
It consists of a pair of left and right second soil covering members 16.

The seeding device 10 includes a seed tank 18 that stores seeds such as seed rice, and a seed tank 18 that is driven via a drive shaft 19 extending rearward from the engine 3.
a feeding roll 20 that feeds out and sows the seeds within;
It has a pair of left and right guide hoses 21 that guide the seeds fed out from the feeding roll 20 to the ground.

The float 12 has a head 24 located at the front,
A main body part 25 integrally extends rearward from the left-right center side of the head 24, and a pair facing the main body part 25 in the left-right direction and integrally extends rearward from both left and right end parts of the head 24. an attached part 26,
A recessed portion 27 that opens rearward is formed between the main body portion 25 and the attached portion 26. A lower end portion of the guide hose 21 is disposed within the front end portion of the recessed portion 27 and is fixed to the support arm 22 via the mounting member 28 . Further, a bracket having a gate shape in plan view is attached to the upper surface of the main body portion 25, and includes a front plate 31 and a pair of left and right side plates 32. A pair of left and right support plates 33 that protrude forward are fixedly provided at the center of the front plate 31 in the left and right direction. And the support plate 33
is pivotally supported at the lower end of a support arm 22 extending from the body 2 via a spindle 23 so as to be swingable about a left-right axis. The rear portion of each side plate 32 is erected at the side end of the rear portion of the main body portion 25 .

Each groove making device 14 is fixed to the lower surface of the float 12 to form a seeding groove, and has a pair of left and right side plates 3.
5. The front portions of both side plates 35 are integrated and located in front of the recessed portion 27, and the middle portions of the side plates 35 in the front-rear direction gradually expand toward the rear to form the lower front ends of the main body portion 25 and the attachment portion 26. The rear side thereof faces parallel to both sides of the front side of the recessed portion 27. As a result, a seeding groove is formed as the machine moves forward.

Each first soil covering member 15 is located at the rear of the outer side plate 35 of the furrower 14 and is fixed to the lower surface of the attachment part 26, and is a first earth covering surface that slopes toward the seeding groove toward the rear end. 15a. As a result, the seeds in the seeding furrow are covered with a small amount of soil in the first stage as the machine moves forward.

Each of the second soil-covering members 16 is disposed with respect to the first soil-covering member 15 so as to sandwich the sown seeds in the left-right direction, and is located further back than the first soil-covering member 15 . And the first soil covering member 1
The seeds covered with soil in step 5 are covered with soil in a second stage with a larger amount of soil than the amount of soil covered with the first soil covering member 15, which slopes toward the seeding groove toward the rear end. Second earthen surface 1
It has 6a. The front end of each second soil covering member 16 extends upward, and a cylindrical body 36 is fixed to the extended end. This cylindrical body 36 is provided with left and right horizontal shafts 37 that protrude outward from the side plate 32 on the upper surface of the float 12.
The second soil covering member 16 is rotatably fitted to the outside, so that the second soil covering member 16 can freely swing up and down. A biasing means 38 is provided for biasing each second soil covering member 16 so as to swing in the direction toward the ground (in the direction of arrow A in the figure). The biasing means 38 includes a connecting rod (connecting member) 39, a tension coil spring 40, a push-pull wire 41, an operating lever 42, a positioning tool 43, and the like. The connecting rod 39 has a U-shape with each end fixed to the pair of left and right cylindrical bodies, and extends over the float 12 in the form of a bridge. The spring 40 has one end connected to the connecting rod 3
9 is connected to the center and located above the float 8. One end of the inner wire 41a of the push-pull wire 41 is connected to the other end of the spring 40, and one end surface of the outer wire 41b is supported by a receiver 44 fixed to the upper surface of the float 12. The operating lever 42 is attached to the handle 6 near the grip portion via a housing 45 so as to be swingable and positionable and fixed. The other end of the inner wire 41a is operatively connected to a lever 42, and the other end surface of the outer wire 41b is supported by a housing 45. The positioning tool 43 includes a receiver 46 fixed on the float 12 and a bolt 47 screwed into the receiver 46 so as to be movable back and forth. The tip of this bolt 47 contacts the connecting rod 39 from behind, and the contact position is changed by moving the bolt 47 back and forth, so that the rear end of the second soil covering member 16 is positioned at the lowest position. , its lowest position can be adjusted freely. As a result, when the spring 40 is pulled rearward via the push-pull wire 41 by swinging the lever 42, the elastic force of the spring 40 applies a biasing force to the second soil covering member 16 in the direction of ground contact. It will be done. Moreover, by changing the amount of tension of the spring 40 by changing the swinging position of the lever 42, the biasing force can be changed and adjusted. In this embodiment, the amount of tension of the spring 40 is eliminated so that the elastic force of the spring 40 does not act, so that no urging force acts on the second soil covering member 16.

With the above configuration, when directly sowing into irrigated soil in a paddy field, the flooded soil direct sowing machine 1 is driven by the drive wheels 7, and the feed rolls 20 of each sowing unit 9 are rotationally driven. Then, in each seeding unit 9, the float 12 slides while the ground follows, the groove creator 14 forms a seeding groove of a predetermined depth, and the seeding groove is passed from the feed roll 20 to the guide hose 21. The seeds are fed out and sown. The first soil covering member 15 first covers the sown seeds with a small amount of soil in the first stage. Then, the second soil covering member 16 performs a final second stage of covering the seeds with a large amount of soil on the seeds covered with soil by the first soil covering member 15. Then, this second soil covering member 1
The second soil covering member 1 is attached via a spring 40 so that the amount of soil covered by the second soil covering member 6 is appropriate depending on the softness and hardness of the soil.
6 is biased toward the ground. That is, when the soil is hard, the amount of tension of the spring 40 is increased by operating the lever 42, and the urging force of the second soil covering member 16 is increased, thereby increasing the amount of digging into the soil and covering the soil with the soil. Ensure quantity. Also,
When the soil is soft, the amount of tension of the spring 40 is reduced by operating the lever 42, and the second soil covering member 16 is
By reducing the biasing force, the amount of digging into the soil is reduced, and the amount of soil covered is prevented from becoming excessive. This makes it possible to always obtain an appropriate seeding depth. If the soil is softer, the biasing force of the spring 40 is eliminated and the second soil covering member 16 digs into the soil by its own weight, and the positioning tool 43 is used to adjust the digging depth so that it does not become too large. Bye.

In the above embodiment, the second soil covering member 16 is biased by the tension coil spring 40, but the present invention is not limited to this, and the connecting rod 39 may be pressed from the front by a compression coil spring, or other rubber may be used. , any elastic member may be used. Further, although the push-pull wire 41 and lever 42 are used to adjust the biasing force, the means for adjusting the biasing force is not limited to this. Furthermore, the present invention may also be applied to the first soil covering member 15.

(Effects of the invention) According to the invention, it is possible to adjust the biasing force of the soil covering member in the direction of ground contact by the elastic member according to the hardness of the soil, so even when the soil is hard, the amount of soil covered is always appropriate. can be obtained. Moreover,
An operating lever that adjusts the biasing force of the elastic member connected to the connecting member that connects the bases of the left and right soil covering members is provided near the grip of the handle, so that the pressing force of the left and right soil covering members against the soil can be adjusted. While in the working position,
The left and right sides can be adjusted simultaneously by hand operation and with one operating system, providing good operability. In addition, since a stopper is provided to regulate the lower limit position of the soil covering member, even though the biasing force of the elastic member is adjusted, when lifting the soil covering member side of the mobile body and making a turn, etc. The soil-covering member can be positioned by the stopper, and the soil-covering member does not swing in a free state, making it easy to turn and the like.

Furthermore, since the left and right soil covering members are interlocked and connected by a connecting member, the elastic member and stopper can be positioned above the float, thereby preventing the elastic member and stopper from being covered with mud. Mud may adhere to the elastic member, making it difficult to adjust the biasing force, and if the stopper's abutment position can be adjusted, adjustment may become difficult due to mud adhering to the elastic member. There's nothing to do.

[Brief explanation of the drawing]

FIG. 1 is an overall side view of a submerged soil direct seeding machine according to an embodiment of the present invention, FIG. 2 is a plan view of the same soil covering device, and FIG. 3 is a side view of the same soil covering device. 10... Seeding device, 14... Grooving device, 16...
Soil covering member, 40...spring.

Claims (1)

[Claims for Utility Model Registration] A movable body 1 having a handle 6 is provided with a float 8 that slides over a paddy field, and groove makers 14 for forming a seeding groove are provided on both left and right sides of the float 8. The base of the soil covering member 16, which covers the seeds sown in the
In this seeding machine, the bases of the left and right soil covering members 16 are connected by a connecting member 39 that crosses above the float 8, and the soil covering member is brought into contact with this connecting member 39 side. A stopper 47 for regulating the lower limit position of the earth covering member 16 is provided on the float 8, and an elastic member 40 connected to the connecting member 39 and urging the earth covering member 16 in the ground direction is provided above the float 8. A soil covering device for a seeding machine, characterized in that an operating lever 42 is provided in the vicinity of a grip portion of a handle 6, and is interlocked with a member 40 to adjust the biasing force of the elastic member 40.