JP2001190162A - Holder - Google Patents

Abstract

(57) [Summary] [PROBLEM] To make a proper hole in a multi-film when a lower part of a drilling body such as a planting cup of a vegetable seedling transplanter is pierced and opened to form a hole in the multi-film. To build a multi-film hold-down tool. SOLUTION: In a holding tool which presses an outer peripheral portion of a hole of the multi-film formed by opening a lower portion of a hole making body into a multi-film while pressing the holding tool, the holding tool is urged downward. Pressing spring 74
Was provided. Further, when the lower portion of the hole body 32 is opened in a state of protruding into the multi-film, the amount of compression of the pressing spring 74 is maximized, and the downward biasing force of the holding member is maximized.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of a presser for pressing an outer peripheral portion of a drilling body for making a hole in a covering material such as a multi-film coated on a field.

[0002]

2. Description of the Related Art Conventionally, in a planting cup provided for a vegetable seedling transplanter, the cup is divided into front and rear portions such that the lower end portion of the planting cup is opened in a state of descending and entering the soil. Some plants form planting holes in the soil. When the field is covered with a covering material such as a multi-film, the lower part of the planting cup is opened to form a planting hole in the soil and simultaneously form a hole in the covering material. .

[0003] Further, there is a type in which a presser for pressing a coating material on an outer peripheral portion of the planting cup from above is provided.

[0004]

In a drilling body such as a planting cup having the above structure, if the covering material is loosened or the pressing force of the holding member is insufficient, the surrounding portion is opened when the lower portion is opened. When the coating material is pulled, the shape and size of the formed hole may be improper, and an appropriate hole may not be formed in the coating material.

[0005]

The present invention takes the following technical means to solve the above-mentioned problems. That is, the invention according to claim 1 is a pressing tool that presses, from above, an outer peripheral portion of a hole of the covering material formed by opening the lower part of the drilling body 32 while protruding into the covering material in the field. The pressing device is provided with urging devices 74 and 88 for urging downward.

[0006] Further, the invention according to claim 2 provides a drilling body 32.
The downward urging force of the urging devices (74, 88) is maximized when the lower part is opened with the lower part protruding into the covering material.
The holding tool described in (1). Therefore, the pressing tool of the present invention presses the outer peripheral portion of the hole of the covering material formed by the drilling body 32 from below by being urged downward by the urging devices 74 and 88.

[0007]

According to the present invention, the presser of the present invention is urged downward by the urging devices 74 and 88, so that the covering material can be surely held down even if there is some unevenness in the field scene. Thus, a desired pressing force can be obtained, and a proper hole can be formed in the covering material by the hole body 32.

[0008] Further, according to the holding device of claim 2,
The urging force of the urging devices 74 and 88 is maximized when the lower part of the hole-forming body 32 is opened and a hole is formed in the covering material. Therefore, when the pressing force is required, the urging force of the urging devices 74 and 88 is increased. Can be done.

[0009]

An embodiment of the present invention will be described with reference to the drawings. FIGS. 1 and 2 show a walking-type vegetable seedling transplanter 1 for planting onion seedlings in a field.
This walking-type vegetable seedling transplanter 1 mainly includes an engine 2 and a main transmission case 3 at a front portion, a pair of left and right front wheels 4 and rear wheels 5 as running wheels, a seedling planting device 6 at a rear portion, and a seedling supply section. 7 and a steering handle 8. In this walking-type vegetable seedling transplanter 1, the front wheel 4 and the rear wheel 5 run through the ridges so that the aircraft straddles the ridge covered with the multi-film in the field, and the seedlings are positioned at the left of the upper surface of the ridge. Planting device 6
Two onion seedlings are simultaneously planted by the left and right seedling planting tools 33, and the same row is reciprocated and planted so that four rows of seedlings are planted in one row.

An engine mount 9 is fixed to the front of the main drive case 3 and the engine 2 is mounted on the engine mount 9.
Is placed and attached. The output shaft of the engine 2 provided in the left and right direction enters the main transmission case 3 so that the power of the engine 2 is input into the main transmission case 3. A running chain rotatable with respect to the main transmission case 3 is provided at the left and right ends of the main transmission case 3.
The left and right housings 10 are provided to transmit the power in the main transmission case 3 into the traveling chain case 10. Output shafts 10a are provided on the left and right outer sides of the rotating tip of the traveling chain case 10, and a pair of left and right rear wheels 5 as traveling wheels are attached to the output shaft 10a. The aircraft is driven by the driving of the vehicle. Therefore, the main transmission case 3 is a transmission that transmits power to the rear wheels 5 as running wheels. On the other hand, a front wheel supporting frame extending in the left-right direction is provided below the engine mounting table 9.
A front wheel mounting portion 13 is provided rotatably around a rolling shaft 12 in the front-rear direction, and a front wheel mounting portion 13 extending downward is provided at both left and right end portions of the front wheel supporting frame 11. The front wheel 4 is attached, and a pair of left and right front wheels 4 is provided in front of each of the pair of left and right rear wheels 5. The front wheels 4 are idle wheels.

A main frame 14 is provided at the rear of the main transmission case 3 to extend to the right. The main frame
A steering handle 8 is provided at the rear end of the frame 14, and the steering handle 8 is connected via the main frame 14 to the main transmission case 3.
It is a configuration supported by.

A hydraulic lift cylinder 16 is provided at the center of the rear of the main drive case 3 in the left-right direction. The hydraulic lift cylinder 16 is fixedly provided to a hydraulic switching valve portion 17 fixed to the main transmission case 3 and switches the hydraulic pressure from a hydraulic pump 18 fixed to the main transmission case 3. 17 is operated by operating a lifting / lowering operation valve provided in 17. At the cylinder rod end of the hydraulic elevating cylinder 16, a horizontal rod 19 extending left and right is provided, and rear wheel elevating rods 21 and 22 are pivotally attached to the left and right ends of the horizontal rod 19, respectively.
The other end of 2 is pivotally connected to the upper arm 10b fixed to each traveling chain case 10, so that the horizontal rod 19 and the traveling chain case 10 are connected. I have.
Therefore, the traveling chain case 10 is rotated around the input shaft 10c of the traveling chain case 10 via the horizontal rod 19 and the rear wheel lifting rods 21 and 22 by the expansion and contraction of the hydraulic lifting cylinder 16. The rear wheel 5 is moved up and down by the rotation of the traveling chain case 10, and the body is raised and lowered.

A horizontal hydraulic cylinder 25 which is operated by hydraulic pressure from a hydraulic pump 18 is provided in a middle portion of the left rear wheel elevating rod 22 so as to extend and retract. The left rear wheel 5 is moved up and down with respect to the vertical position of the right rear wheel 5 by the expansion and contraction of
The aircraft can be maintained horizontally horizontally regardless of the unevenness of the valleys. A right and left tilt sensor 26 of a pendulum type is provided on the right side of the main drive case 3, and is detected by the left and right tilt sensor 26 via a horizontal operation valve provided in the hydraulic pressure switching valve unit 17. Hydraulic cylinder 2
5 is operated to maintain the aircraft body horizontally left and right.

In the seedling planting apparatus 6, the power from the main drive case 3 is provided on the rear side of the main drive case 3 so as to plant one seedling in the field. The operation is transmitted through a seedling planting device drive case 31 fixed to the planting transmission case 30 and the planting transmission case 30. The seedling planting device 6 includes two right and left seedling planting tools 33 each having a planting cup 32 and a seedling planting tool operating mechanism 34 that operates to raise and lower the seedling planting tool 33. The planting cup 3
2 is a drilling body for making a hole in the multi-film coated on the field.

The seedling supply section 7 is provided above the seedling planting device 6 and supplies left and right seedlings for sequentially supplying one plant seedling to the left and right seedling planting tools of the seedling planting device 6. It is provided with a supply turntable 35. The left and right seedling supply rotary tables 35 are vertically rotated by a reciprocating operation of a crank rod 36 connected to a crank arm 36a which reciprocates back and forth by transmission from the planting transmission case 30.
5a, and is reciprocatingly operated by the crank rod 36.
Each of the left and right is driven to rotate via a left and right drive arm 37 that reciprocates around, a left and right connection rod 38 connected to the drive arm 37, and a left and right one-way clutch mechanism 39. Further, the seedling supply rotating table 35 has a configuration in which a plurality of seedling supply cups 40 are provided at predetermined intervals along a circumference around the rotation shaft 35a. The seedling supply cup 40 is the cup 4
0 is provided to be openable and closable, and is provided below the seedling supply cup 40 only when the seedling supply cup 40 comes to a predetermined position by rotation of the seedling supply rotating table 35.
A seedling supply cup opening / closing guide 41 provided so as to open the bottom surface of O is fixedly provided on the machine body side. Therefore, when the seedling supply cup 40 comes to the predetermined position A by the rotation of the seedling supply turntable 35, the bottom surface 40 a of the seedling supply cup 40 is opened and the pot seedlings in the seedling supply cup 40 are moved downward by the seedling attachment 33.
When the seedling supply rotating table 35 further rotates and the seedling supply cup 40 deviates from the predetermined position A, the bottom surface 40a of the seedling supply cup 40 closes.

At the front side of the left and right seedling supply rotating tables 35, there is provided a seedling mounting table 42 on which the seedlings raised in the cell tray are mounted together with the cell tray. Then, from the rear side of the left and right rear wheels 5, that is, the left and right sides of the left and right seedling supply turntables 35, the workers supply the pot seedlings on the seedling mounting table 42 into the seedling supply cup 40 one by one. Has become.

The seedling supply cup 40 is made of a transparent resin material so that the presence or absence of a seedling can be visually recognized from the side of the seedling supply section 7. Therefore, seedling supply cup 4
When the worker who supplies the pot seedling to 0 visually checks for the presence or absence of a seedling in the seedling supply cup 40, the worker must not be able to visually recognize the seedling supply cup 40 because it is in the way or look in from above the cup 40. There is no such thing as
The operator can visually check the presence or absence of seedlings in the seedling supply cup 40 while maintaining the posture while performing the seedling supply operation in a posture where the pot seedling can be easily supplied to the seedling supply cup 40.
Note that the seedling supply cup 40 may be any material that can visually check the presence or absence of a seedling from the side, such as being translucent if not transparent.

The seedling plant tool operating mechanism 34 includes a front link mechanism 43 and a rear link mechanism 44.
The front side link mechanism 43 has a planting transmission case 3 at the base end side.
The front second link 43b is connected to the other end of the front first link 43a attached to the front second link 43a, and the base 45 of the right and left seedling planting tools 33 is attached to the rear end of the front second link 43b.
Are connected at the front side. Similarly, the rear link mechanism 44 includes a rear second link 44b at the other end of the rear first link 44a whose base end is attached to the planting transmission case 30.
The rear side of the base 45 of the seedling attachment 33 on the left side is connected to the rear end of the rear side second link 44b. A front drive arm 43 is provided at an intermediate portion of the front second link 43b and the rear second link 44b.
c, a rear drive arm 44c is provided, and the front drive arm 43c and the rear drive arm 44c are rotatably driven by the power from the seedling planting device drive case 31. ing. Therefore, the seedling tool operating mechanism 34 constituted by the front link mechanism 43 and the rear link mechanism 44 by driving the front drive arm 43c and the rear drive arm 44c.
Is operated to raise and lower the left and right planting cups 32 attached to the rear end of the operating mechanism 34 so as to draw a long loop locus T in the vertical direction. By the operation of the seedling planting tool operating mechanism 34, the left and right seedling planting tools 33 are moved up and down from the seedling transfer position B immediately below the seedling supply turntable 35 to the seedling planting position C in the field. . It should be noted that the base of the left seedling planting tool 33 and the base of the right seedling planting tool 33 are integrally provided by connecting shafts 46 provided at the front and rear, so that the left and right seedling planting tools 33 move up and down integrally. It has become.

The seedling planting tool 33 comprises a base 45 and a planting cup 32 provided below the base. The base 45 is provided with a seedling guide tube 47 for guiding a seedling dropped and supplied from the seedling supply unit 7 to the planting cup 32.
The planting cup 32 is divided into two parts in the front-rear direction and configured to open and close the lower part. The planting cup 32 descends in a state in which one pot of seedlings inherited from the seedling supply cup 40 of the seedling supply turntable 35 is accommodated, At the seedling planting position C, the lower part is opened back and forth to form a planting hole in the field, and seedlings are supplied and planted in the planting hole.

Next, the operation of opening and closing the planting cup 32 will be described. The planting cup 32 has a front part 32 a and a rear part 3.
2b are provided separately from each other, and the front portion 32a is provided on the rear end of the rear second link 44b. Are fixed to the left and right rear support plates 51 that rotate around a rotation shaft 50 provided at the rear end of the front second link 43b.
The front support plate 49 and the rear support plate 51
A connecting shaft 52 for connecting both plates 49 and 51 is provided at the same position on the left and right sides when viewed from the side. Left rear support plate 51 of left seedling attachment 33
The opening / closing rod 53 has one end attached thereto, and the other end of the opening / closing rod 53 is rotated about a connecting shaft 54 between the rear first link 44a and the rear second link 44b.
It is configured to be attached to the tip of the. An opening / closing cam 56 is provided at the distal end of the rear drive arm 44c, and the opening / closing cam 56 comes into contact with a roller 57 provided in the middle of the opening / closing arm 55 from below. The pivoting of the opening / closing arm 55 to the lower side at the bottom dead center of the raising / lowering operation trajectory T of the seedling planting tool 33 is restricted.
The second rear portion 32b is rotated rearward.
In addition, the rear support plate 51 on the right side of the seedling attachment 33 on the left side.
And a rear support plate 51 on the left side of the seedling attachment 33 on the right side are integrally provided via a connection plate 58.
The rear part 32b of the right planting cup 32 also rotates with the rotation of the rear part 32b of the left planting cup 32. The front part 32a of the planting cup 32 is connected to the rear part 32b.
Around the rotation shaft 50 provided at the rear end of the front second link 43b via the connection shaft 52 connecting the front support plate 49 and the rear support plate 51 with the rearward rotation of the front support plate 49. The front part 3 of the planting cup 32 is configured to rotate forward.
2a and the rear part 32b rotate in opposite directions to open the lower part of the planting cup 32. A closing spring 59 is provided between the front supporting plate 49 and the rear supporting plate 51. The closing spring 59 attaches the planting cup 32 in a direction in which the lower portion of the planting cup 32 closes. I'm going.

On the rear side of the planting cup 32, soil covering rings 60 for covering the soil are provided on the left and right sides of the seedlings planted in the field. The earthing ring 60 has an outer periphery made of rubber, and has a left-right rotating shaft 61 attached to the main frame 14.
A seedling which is rotatably mounted on a soil-covering ring support frame 62 which is rotatable around, and which is always grounded and planted on the upper surface of the ridge by the weight of the soil-covering ring 60, the soil-covering ring support frame 62 and the weight 63. The soil is covered on the sides.
The earth covering wheel 60 is configured to rotate as the aircraft advances while being in contact with the upper surface of the ridge in the field.

A grounding plate 64 is provided in front of the ridges 33 of the seedling planting device 6 to be grounded on the upper surface of the ridge, and the connecting rods 65 and 66 are turned by the vertical rotation of the grounding plate 64. The lifting operation valve of the hydraulic switching valve portion 17 is operated via the like, and the hydraulic lifting cylinder 16 is operated. Accordingly, when the ground plate 64 moves up and down as the machine body moves up and down with respect to the upper surface of the ridge due to the unevenness of the ridge of the ridge on which the front wheel 4 and the rear wheel 5 travel, the hydraulic lifting cylinder 16 operates, The vertical movement of the body is controlled so that the vertical angle of the ground plate 64 becomes a predetermined angle.

An operation panel 67 is provided in front of the steering handle 8 and behind the seedling supply section 7. The operation panel 67 includes a main clutch lever 68 capable of turning on and off the drive of the rear wheel 5 and the seedling placement section 7, a lifting / lowering operation of the machine by the hydraulic lifting / lowering cylinder 16, and a drive of the seedling placement section 7. A planting / elevating lever 69 that can perform only cutting is provided.

A side clutch lever 70 is provided below the left and right grips 8a, 8a of the steering handle 8. By operating the side clutch lever 70, one of the left and right rear wheels 5 is driven. It is severing. Then, while the operator pushes down the steering wheel 8 and lifts the front wheel 4 in the air, the operator operates one of the left and right side clutch levers 70 to cut off the driving of one of the left and right rear wheels 5. The aircraft is to be turned.

By the way, on the front part 32a and the rear part 32b of the planting cup 32 of the seedling planting tool 33 of the seedling planting apparatus 6, a pressing tool 71 is provided for pressing against the upper surface of the ridge, that is, the multi-film, from above. I have. This holding tool 71
Is a hanging rod 72 extending downward from the upper part of the planting cup 32.
Are provided at the lower end portions of the semicircular ring members 73, respectively.
Are provided on the front part 32a and the rear part 32b of the planting cup 32 symmetrically in the front-rear direction. In addition, the hanging bar 72 is
It is provided on the planting cup 32 via a pressing spring 74 and is slidable up and down with respect to the planting cup 32.

Accordingly, in the walking-type vegetable transplanter 1, the rear wheel 5 is driven by the transmission from the engine 2 so that the front wheel 4 and the rear wheel 5 travel through the valleys of the ridge, and the body advances. Then, even if the body moves up and down with respect to the upper surface of the ridge due to the unevenness of the valleys of the ridge, the rear wheel 5 is raised and lowered by the hydraulic lifting cylinder 16 by the vertical movement of the grounding plate 64, and The seedling placement position C is controlled so as to have a predetermined height with respect to the upper surface of the ridge. The horizontal hydraulic cylinder 25 is operated so as to control the vertical height of the left and right rear wheels 5 so that the aircraft is maintained horizontally horizontally even when the aircraft is tilted in the left-right direction due to the unevenness of the valleys. Then, the worker supplies the seedlings one by one to the seedling supply cup 40 of the seedling supply turntable 35 of the seedling supply unit 7, so that the planting cup of the seedling attachment 33 is transferred from the seedling supply cup 40 to the seedling transfer position B. The pot seedlings are dropped and supplied in 32 and are held.

When the seedling planting tool 33 is lowered toward the soil by the seedling planting tool operating mechanism 34 in order to plant the seedlings in the field, the lower end of the planting cup 32 breaks through the multi-film and enters the soil. Together with the presser 71
Ring member 73 contacts the multi-film. Further, when the seedling inoculating tool 33 descends to the bottom dead center of the operating locus T, the lower part of the planting cup 32 opens back and forth in this state, pushing out the soil, forming a planting hole in the field, and forming the planting hole in the field. The multi-film is pushed back and forth while supplying the seedlings, and the pressing spring 74 is compressed so that the ring 73 presses the multi-film. Therefore, the pressing spring 74 is
This is an urging device that presses the ring 73 of the presser 71 against the multi-film.

Therefore, when the lower portion of the planting cup 32 is opened to make a hole in the multi-film, the ring 7
3, the multi-film around the planting hole is pressed down, so that an appropriate hole can be formed in a state where the multi-film is not loosened. Further, the holding member 71
Is pressed against the multi-film by the pressing spring 74, so that the multi-film can be reliably pressed even if there is some unevenness in the field scene, and a desired pressing force can be obtained, and the planting cup 32 This makes it possible to make an appropriate hole in the multi-film. Therefore,
By making the holes of the multi-film small or otherwise inappropriate, it is possible to prevent the planting posture of the seedlings after being planted by the seedling planting tool 33 from becoming inappropriate. Also, by making the holes of the multi-film too large, the cut pieces of the perforated multi-film contact the seedlings planted with heat and burn the leaves of the seedlings, and the heat retention effect in the multi-film can be reduced. It is possible to suppress the adverse effects on the cultivation of the seedling after planting, such as not being obtained sufficiently.

The holding tool 71 is used for the planting cup 3.
2 is located at the bottom dead center of the operating locus T, the amount of compression of the downwardly pressing pressing spring 74 is maximum, so that the pressing force is maximum when the planting cup 32 makes a hole in the multi-film, and When a hole is formed in the film, the pressing force can be increased.

The holding member 81 shown in FIG. 8 is provided with a connecting member 82 for connecting the left and right ends of the front and rear rings 73 in addition to the holding member 71 described above. The connecting body 82 is made of a stretchable elastic body such as rubber. Therefore, this holding member 81 can press the multi-film of the entire circumference of the planting hole by the front and rear rings 73 and the connecting body 82, and can more appropriately make a hole in the multi-film, Since the connecting body 82 expands and contracts with opening and closing of the lower portion of the planting cup 32, opening and closing of the planting cup 32 is not hindered.

FIG. 9 shows a holding member 83 having a different structure, although the other structure is the same. The presser 83 is moved from the seedling guide tube 47, which is the base 45 of the seedling attachment 33, to a pressing spring 74 and a suspension rod 72.
The front and rear annular members 73 are provided via the base, and do not move back and forth regardless of the opening and closing of the lower portion of the planting cup 32, so that the multi-film is stably pressed regardless of the opening and closing of the lower portion of the planting cup 32. can do. When cutting blades 84 are provided before and after the lower part of the planting cup 32 as in the planting cup 32 shown in FIG. 9, the lower part of the planting cup 32 is opened and the multi-film is smoothly pushed back and forth. Can be
Drilling of the multi-film can be performed stably.

FIG. 10 similarly shows a pressing member 85 having the same structure as that of the planting cup 32, but having a different structure.
An arm 86 is provided at the front portion of the planting cup 32 so as to be rotatable around a left-right axis 86a, and an idle roller 87 provided at the end of the arm 86 is provided on each of the left and right sides. Configuration. A tension spring 88 for pressing is provided between the arm 86 and the rear part 32b of the planting cup 32. Therefore, when the seedling planting tool 33 is lowered toward the soil by the seedling planting tool operating mechanism 34 in order to plant the seedlings in the field, the holding roller 87 contacts the multi-film, and the seedling planting tool 33 is further activated. When the lower part of the planting cup 32 opens back and forth to the bottom dead center of the locus T, the tension spring 88 for pressing is pulled and the tension spring 8
The pressing roller 87 presses the multi-film by the urging force of No. 8. As a result, the pressing force of the pressing roller 87 increases in conjunction with the opening of the lower portion of the planting cup 32 and the opening and closing of the multi-film, so that the multi-film can be efficiently pressed. When the lower part of the planting cup 32 is opened, the pressing roller 87 moves forward with respect to the planting cup 32, so that the soil on the side toward the planting hole is somewhat reduced. Since the seedling is supplied and slightly covered with the seedling immediately after planting, it is possible to prevent the planted seedling from falling down before the soil is covered by the soil covering ring 60 and to stabilize the planted seedling in an appropriate planting posture. it can. Further, since the pressing body for the multi-film is constituted by the pressing roller 87, the pressing roller 8 is provided.
The resistance applied to the multi-film and the holding member 85 due to the forward movement of the machine while the abutment 7 is in contact with the multi-film can be suppressed. It can be carried out.

[Brief description of the drawings]

FIG. 1 is a side view of a walking type vegetable transplanter.

FIG. 2 is a plan view of a walking type vegetable transplanter partially omitted.

FIG. 3 is a bottom view showing the seedling supply turntable.

FIG. 4 is a side view showing a seedling attachment operating mechanism.

FIG. 5 is a plan view showing a seedling attachment operating mechanism.

FIG. 6 is a perspective view showing a planting cup and a holder.

FIG. 7 is a side view showing the planting cup and the retainer.

FIG. 8 is a perspective view showing another holding member.

FIG. 9 is a perspective view showing another holding member.

FIG. 10 is a perspective view showing another holding member.

[Explanation of symbols]

32: planting cup, 74: pressing spring, 88: tension spring, 71, 81, 83, 85 ... holding tool

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Fujio Murakawa 1-Yakura, Tobe-cho, Iyo-gun, Ehime Pref.

Claims (2)

[Claims] 1. A presser for pressing an outer peripheral portion of a hole of a covering material formed by opening a lower portion of a hole making member into a covering material in a field from above, said urging member being biased downward. Presser provided with biasing devices 74 and 88 to perform the pressing. 2. The holding device according to claim 1, wherein the downward urging force of the urging devices 74 and 88 is maximized when the lower portion of the drilling body 32 is opened in a state of protruding into the covering material.