JPH0115338Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an improvement of a pressure device in a bed filling machine.

The purpose of this invention is that the top surface of the soil in the seedling nursery box, which is compressed by rotating and pressing the pressing roll or by rotating and pressing the pressing plate, is moved in a direction perpendicular to the direction of movement of the seedling box. Due to mounding of soil and rotational movement due to the remaining part of the body circumferential surface of the pressure roll, compaction residue is generated at both the front and rear corners of the press roll, and during sowing, the seed rice sown in this mounded area rolls and becomes paddy-depleted. This causes the occurrence of missing plants during rice transplantation, but the purpose is to eliminate this heaving phenomenon and achieve flattening of the soil pressure surface of the bed of the seedling box.

The present invention, which is devised to achieve the above object, uses a bed soil filling machine which is designed to transport the seedling raising boxes with bed soil spread thereon almost horizontally using a conveying device, and the upper surface of the bed soil which has been spread inside the seedling raising boxes is The machine is characterized in that a pressure plate forming a pressing plane to be pressed from above is supported by a parallel crank device mounted on the machine wall, and the pressure plate is pressed in a parallel motion attitude.

Embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Reference numeral 1 denotes a machine frame in the form of a machine A, which is mounted and fixed between the moving guide side frames 2, 2 of the floor filling machine A.

Reference numeral 3 denotes a pressing roll which is located between the movement guide side frames 2 and 2 and which presses from above the top surface of the soil spread on the inside of the seedling raising box 4 which is mounted and moved on the conveying device.
The pressure roll 3 is attached to the left and right side walls 1a, 1 of the machine frame 1.
It is rotatably mounted on the tips of swinging rods 5, 5 which are rotatably supported on b. The swinging rods 5, 5 and springs 6, 6 elastically bias it downward. Reference numeral 7 denotes a scraper for scraping off soil adhering to the outer peripheral surface of the pressure roll 3, and the scraper 7 is attached to the swinging rods 5, 5.

A parallel crank device B is configured in the inner cavity of the machine frame 1 to swing in the direction of movement of the seedling box 4. Two parallel links 8a and 8b are hung rotatably.

Reference numeral 9 denotes a pressure plate; the pressure plate 9 is located on the lower side and forms a presser flat surface 9b for pressing the upper surface of the soil from above; on the upper side, it forms a mounting plate 9a that is approximately parallel to the presser flat surface 9b. , the mounting plate 9a and the presser flat surface 9
b is integrally bent to form a diagonal standing wall 9c that tilts forward and downward. On the upper surface of the mounting plate 9a of the pressure plate 9, support pins 9d and 9e are fixedly installed in the front and rear at equal intervals to the distance between the links 8a and 8b.

Support pins 9d and 9e of the pressure plate 9 are rotatably suspended below the parallel links 8a and 8b, and the pressure plate 9 is mounted in the state where the pressure is applied (see Figures 2A and 2B). Although the plate 9a is in a substantially horizontal state, it is suspended to form a connecting link between the links 8a and 8b.

The pressing plane 9b of the pressing plate 9 is positioned slightly lower than the upper edge of the sides 4a, 4b of the seedling raising box 4 in the waiting state for applying the pressing force (FIG. 2A).

Of the links 8a and 8b, the support portion of the link 8a into which the support pin 9d on the front side (the left side in each figure in FIG. 2) is fitted is an elongated hole 8a1, and the sides 4a and 4b of the seedling box 4 are pressed into a pressure plate. Make sure to allow for the rise when 9a crosses over.

On the other hand, a pin 8b1 is provided in the middle of the other link 8b to protrude laterally (in the direction perpendicular to the plane of the paper in FIG. 2). Then, the top plate 1 of the machine wall 1
A tension coil spring 11 is attached between the pin 8b1 and a movable fulcrum 10a using a roller 10 that rolls in the moving direction of the seedling box 4 approximately centered above the upper fulcrum 8b2 of the link 8b on c. The pin 8b1 is suspended so that it is always pulled upward.

Furthermore, this pin 8b1 has a sensing rod 12 attached downwardly.
a The fixed sensing arm 12 is fitted into the upper part of the sensing arm 12 through the elongated hole 12b. The sensing arm 12
A pin 12c is provided in the lower part of the machine so as to protrude laterally, and the pin 12c is configured to push the sensing arm 12 upward at all times by means of a plate spring 13 fixed to the machine wall 1. Further, the leaf spring 13 is configured to bias the pressure plate 9 upwardly to assist in raising the pressure plate 9.

Reference numeral 14 denotes a regulating piece that regulates the operation of the support pin 9d on the front side of the front pressure plate 9. The regulating piece 14 is fixed to the machine wall 1 so as to be tilted downward to the rear side. It is designed to prevent the front support pin 9d from lifting up at times, and to allow it to lift up so that it can climb over the sides 4a and 4b of the seedling box 4 when it is not under pressure.

Next, the operation of the present invention will be explained with reference mainly to FIGS. 2A to 2D.

The seedling raising box 4, which has been sprinkled with bed soil, is transported by a transport device.
It is moved to the right in each figure of FIG. and,
During the movement, the top surface of the soil in the seedling box 4 is compressed by the pressure roll 3. As the state of the pressure action progresses and as shown in FIG. Then, the two parallel links 8a and 8b of the parallel crank device B, which suspends the jaw pressure plate 9, swing counterclockwise, and the whole jaw pressure plate 9 descends in a parallel state, and the seedling raising box 4 is lowered.
The raised part of the bed soil due to the residual pressure on the circumferential surface of the pressure roll 3 which is generated on the side 4a of the pressure roll 3 is compressed. At this time, the sensing arm 12 is gradually swung clockwise from the non-sensing state shown in FIG. 2A. As the parallel links 8a and 8b swing, the roller 10 moves slightly to the right, and the support pin 9d, which is fitted into the elongated hole 8a1 at the bottom of the left link 8a, is attached to the regulating piece 1.
The sensing arm 12 that moves along the lower surface of 4 and engages the pin 8b1 in the middle of the right link 8b as the pin 8b1 lowers down the leaf spring 13, but receives the upward biasing action of the leaf spring 13. , the two links 8a, 8b and the sensing arm 12 rise up through the elongated hole 12b of the arm 12, as shown in FIG. At this time, the pressing surface 9b of the pressing plate 9 applies maximum pressure to the upper surface of the soil.

Furthermore, when the seedling raising box 4 continues to move to the right, the parallel links 8a and 8b exceed the bottom dead center due to the tension coil spring 11, and instantaneously swing counterclockwise. At this time, the roller 10 further moves to the right as the parallel links 8a and 8b swing, and the support pin 9d of the left link 8a escapes from the lower surface of the regulation piece 14 and moves to the right side of the link 8b. As the intermediate pin 8b1 rises, the sensing arm 12 rotates clockwise due to the upward biasing action of the leaf spring 13, and the sensing rod 12a enters a state in which it can sense the passage of the side 4a of the seedling raising box 4.
At this time, the pressure plate 9 receives the upward biasing action of the leaf spring 13 in addition to the upward movement of the pin 8b1 due to the swinging of the right link 8b, and supports the elongated hole 8a1 at the bottom of the link 8a, causing the pin 9d to rise. Then, as shown in FIG.
The state allows the passage of.

The seedling raising box 4 continues to move to the right, and the sides 4a and 4b of the seedling raising box 4 pass the pressing surface 9b of the pressure plate 9.
When the side 4a comes into contact with the sensing rod 12a, the sensing lever 12 is swung counterclockwise. The swinging of the sensing lever 12 in turn pushes down the leaf spring 13, and at the same time swings the links 8a and 8b clockwise (see FIG. 2D). At this time, roller 10
moves slightly to the left.

When the nursery box 4 moves further to the right, link 8
a and 8b are instantaneously swung clockwise by the tension coil panel 11 beyond the bottom dead center. At this time, the roller 10 further moves to the left as the links 8a and 8b swing, and the elongated hole 8 of the left link 8a
The support pin 9d fitted to a1 passes through the upper surface of the regulating piece 14 and moves to the left, and as the pin 8b1 at the intermediate portion of the right link 8b rises, the leaf spring 13 is biased upward and the tension coil spring is 11 causes the links 8a and 8b to swing in parallel, returning to the state shown in FIG. 2A again.

In this way, when the air pressure is applied, the air pressure plate 9 is moved downward parallel to the counterclockwise direction by the action of the parallel crank device B, and when the air pressure effect is completed, the sensing rod 12a attached to the lower part of the sensing arm 12 is moved. It continues to swing back until it becomes detectable. During this backward movement, the pressure plate 9 swings upward to the right while changing its posture to a forward upward position due to the upward biasing of the leaf spring 13 and the lifting prevention release of the regulating piece 14, and then the sensing rod 12a of the sensing arm 12 Pushed by the side 4a of the movable seedling growing box 4, due to this movement, the pressure plate 9 swings to the left while remaining in the forward upward position, and overcomes the sides 4a and 4b of the seedling growing box 4. . Then, the pressing plate 9 advances to the left until it enters the state shown in FIG. 2A, and the forward upward movement state returns to the pressing standby state, and the pressing surface 9b becomes approximately horizontal. In this way, the pressure plate 9 makes a pseudo-oval motion.

According to the present invention configured and operated as described above,
This is because the pressing plate 9 is supported by a parallel crank device to press the raised part of the soil on the side 4a of the seedling box 4 due to the residual pressure on the body circumferential surface of the pressing roll 3 in a parallel motion posture. Since the presser surface can be lowered and pressed while maintaining a parallel state, it is very effective that the top surface of the bed soil can be leveled evenly over the entire surface inside the seedling growing box 4.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a pressure device part of a bed filling machine in which the present invention can be implemented, and FIGS. 2A to 2D are side sectional views for explaining the operation of the pressure device. Explanation of the main symbols in the drawings: A...bed filling machine, B...
... Parallel crank device, 4 ... Seedling raising box, 9 ... Pressure plate, 9b ... Pressure plane.

Claims (1)

[Scope of utility model registration request] In a bed soil filling machine configured to transport a seedling raising box on which bedding soil has been spread on a rack approximately horizontally using a conveying device, a pressing plate is provided which forms a pressing plane that presses from above the top surface of the bedding soil that has been spread inside the seedling raising box. A pressurizing device for a floor filling machine, characterized in that the pressurizing plate is supported by a parallel crank device mounted on a machine wall and pressurizes a pressurizing plate in a parallel motion posture.