JPH0582208U - Seedling transfer device for seedling transplanter - Google Patents

Abstract

(57) [Abstract] [Purpose] Despite the pair of twist belt type seedling posture changing and conveying units, the tension unit applies a substantially uniform tension over the entire width of the belt to improve the succession of seedlings from the lateral conveying unit. It is an object of the present invention to provide a seedling transfer device for a seedling transplanter, which is capable of accurately feeding seedlings and keeping the planting posture of seedlings constant. [Structure] Lateral transfer unit 14 for transferring seedlings 12 in a lying posture
In the seedling transplanter equipped with the seedling transfer device 8 in which the seedling attitude changing / conveying unit 15 composed of a pair of twisting belts for changing to the standing attitude is installed, the tension roller 40 provided in the seedling attitude changing / conveying unit 15 is used as a belt. It was configured in a frusto-conical shape along the twisting direction of.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a seedling transfer device in a seedling transplanter such as a grass seedling transplanter.

[0002]

[Prior Art]

 The applicant of the present invention, as shown in FIG. 11, uses a lateral transport unit (A) for transporting a band-shaped grass grass seedling placed on a seedling stand (E) in a lying posture, and a horizontal transport unit (A). A seedling posture changing and conveying section (c) consisting of two endless belts (twisting belts) that transforms the sent-up seedlings into a standing posture that corresponds to the proper take-out posture by the planting rod (b). We have proposed a grass seedling transplanter equipped with a seedling transfer device that is erected from the seedling supply side to the seedling extraction side (Japanese Patent Application No. 3-69034, etc.), and in its own right, the horizontal transfer section (a) A seedling pressing guide (d) is provided along the surface above the seedling to improve the seedling feeding action, and a tension roller (f) is provided on the feeding start end side of the seedling posture changing and feeding section (c). The tension of the twist belt is maintained.

[0003]

[Problems to be solved by the device]

 However, the tension roller (f) does not consider the twisting of the belt, but simply uses a cylindrical pulley, so that even tension pressure is not applied evenly to the twisted belt, and one side of the belt is tensioned at the tension part. There is a problem that the seedlings are not lifted up from the rollers (f) and the transporting posture of the seedlings is disturbed, and the planting accuracy is lowered because the seedlings are not planted in an orderly upright posture.

[0004]

[Means for Solving the Problems]

 The seedling transfer device of the seedling transplanter according to the present invention is based on the above-mentioned actual conditions, and includes a horizontal transfer section for transferring seedlings in a lying position and a falling position sent by the horizontal transfer section. Transform the seedlings into a standing posture that corresponds to the proper taking-out posture by the planting rod. Seedlings equipped with a seedling posture changing and transporting unit consisting of a pair of twist belts and a seedling feeding device erected from the seedling supply side to the seedling taking-out side. In the transplanting machine, the gist is that the tension roller provided in the seedling posture changing and conveying section is configured in a truncated cone shape along the belt twisting direction.

[0005]

[Action]

 Since the tension part of the seedling posture changing / conveying unit does not lift one side of the belt from the tension roller, a substantially uniform tension force is applied to the entire width of the belt. Not only is the transfer of seedlings always performed well, but the belt holding action of the seedlings is reliable and the seedling posture is not disturbed. As a result, the seedling planting posture is always constant.

[0006]

【Example】

 The structure of the present invention will be described with reference to an embodiment shown in the drawings. In the drawing, the running section (this machine) of a passenger rice transplanter having a driver's seat 1a, an assistant's seat 1b, and a spare seedling support frame 1c (the main unit) A, 6 rows of grass seedlings are planted via an elevating link mechanism 2. A device equipped with a transplanter P is illustrated. (A) The grass seedling transplanting machine P is equipped with a seedling placing table 3, a drive case 4, a planting rod 5, a planting section 7 including a float 6 for sliding down a rice field, and the like from the seedling supplying side to the seedling removing side. The grass seedlings transported by the seedling transporting device 8 installed on the table 3 are sandwiched by the planting rods 5 one by one and continuously planted on the rice field. The seedling mounting table 3 has bottom plates 9a and 9b fixed to a pair of left and right seedling carrier supporting frames 9, and six seedling mounting tables 3 are provided below the inclined upper end side of the seedling mounting table 3 corresponding to the number of rows of the planting section 7. A seedling box mounting table 11 (a structure of the seedling box mounting table 11 will be described later) on which the seedling box 10 is detachably mounted is connected in series. In each seedling box 10, the stem a is cut into a predetermined length, and the stem a near the root b is sandwiched with paper adhesive tape T from both sides (taping process), and the tape T portion is attached. A band-shaped sapling (tape seedling) 12 formed by winding a thread from the outside is stored in a zigzag shape (the length of the tape seedling is 10 to 12 m, and the planting length in the field is About 100 m), the band-shaped grass seedlings 12 are planted from the tip end side by the planting rods 5 by the seedling transporting device 8 provided between the partition plates 13 assembled on the seedling mounting table 3 corresponding to each planting strip. It is designed to be transported to the seedling removal side. Then, the seedling transfer device 8 transfers the seedlings in a lying posture and the horizontal transport unit 14 and the seedlings 12 in the lying posture sent by the horizontal transport unit 14 to the standing posture corresponding to the proper take-out posture by the planting rod 5. It is composed of a seedling posture changing / conveying unit 15 for transforming. 16 is a rolling support hitch for the planting section, 17 is a line drawing marker, 18 is a stay, 19 is a stand for the planting section that can be tilted up and down, 20 is a transmission cover, 21 is the transfer end side of the seedling posture changing transfer section 15 (seedling) The seedling feeding / cutting device provided on the take-out side) is composed of a stalk-point feeding rotary body 22, seedling support guides 23, 23a, 23c, and a cutting section 24 for dividing each band-shaped seedling into individual plants. Reference numeral 25 is a cutting blade supporting transmission case, and a pair of cutting blades 26 and receiving blades 27 are arranged on the left and right of the case 25 so as to move toward and away from each other, and three cases corresponding to 6-row planting. 25 are arranged side by side. Reference numeral 28 is a gutter-shaped seedling root guide, and 29 is a planting guide.

By the way, the lateral conveying section 14 and the seedling posture changing conveying section 15 which constitute the seedling conveying device 8 are endless belts, respectively, and are distributed and installed on the lateral conveying section 14 side near the root and on the left and right on the stem tip side. The formed endless belt 14a is stretched between a pulley 31 supported by a pulley supporting shaft 30 and a pulley 33 fixed to first drive shafts 32, 32a for driving the seedling posture changing / transporting. The endless belts (twisting belts) 15a and 15b on the side of the seedling posture changing and conveying section 15 are arranged in the middle section of the left and right endless belts 14a on the side of the horizontal conveying section 14 so as to sandwich the midway part of the conveying seedlings in the stem body direction. Pulleys arranged in front and fixed to the first and second drive shafts 32 and 32a and the second drive shafts 34 and 34a, which are separate bodies on the left and right sides, and pulleys supported in the mounting bracket 21a of the seedling feeding and cutting device 21. It is laid between 37 and 38 in a twisted state from the horizontal direction to the vertical direction. Reference numeral 39 denotes a stalk forward feeding gum blade rotating body that rotates integrally with the pulley 31.

A pair of upper and lower tension rollers 40 for pressing the non-transporting side of the endless belts 15a and 15b are rotatably provided near the conveyance start ends of the endless belts 15a and 15b via a roller shaft 41. The tension roller 40 has a truncated cone shape along the twisting direction of the endless belts 15a and 15b. That is, as shown in the figure, the pair of upper and lower tension rollers 40 are turned 180 ° so that the large diameter portion and the small diameter portion are right and left reversed, and the roller facing surface is lowered to the right corresponding to the twist of the endless belts 15a and 15b. It is held in a parallel state. Further, a plate-shaped tension plate 42 is provided in the middle of the endless belts 15a and 15b in the carrying direction, and a tension pulley 43 is provided at the carrying end side. 44 and 45 are bearings, and 46 is a rubber body for preventing pulley slippage.

Reference numeral 50 denotes a seedling-holding conveying band which is rotatably provided above the conveying surface of the endless belt 14a that constitutes the lateral conveying unit 14, and the seedling-holding conveying band 50 is a fulcrum on the front side in the conveying direction. As a result, the seedling supply side is constructed so that it can be opened and closed vertically. In this embodiment, the seedling holding and conveying belt 50 is arranged above the endless belt 14a on the root side of the seedling 12 as an example. That is, a plate in which a pulley 52 is rotatably supported and a handle 53 for lifting and tension adjustment is fixedly mounted on an L-shaped support frame 51 that is rotatably supported with respect to the second drive shafts 34, 34a. 54 is provided with a mounting frame 55 which is connected and fixed through a long hole and a bolt (not shown) so as to be adjustable forward and backward, and between the pulley 52 and the pulley 56 fixed to the second drive shaft 34, 34a. The seedling pressing conveyor belt 50 is hung so that the endless belt 14a and the seedling pressing conveyor belt 50 can convey the grass roots 12 with the hard root side being clamped from above and below with an appropriate pressing force. is there. Then, in order to apply a proper elastic force to the conveying surface of the endless belt 14a with the seedling pressing conveyor belt 50, in the direction of the endless belt 14a via the tension bullet 57 stretched between the support frame 51 and the partition plate 13. I have been energized. The seedling pressing conveyor belt 50 can be maintained in an open state by an appropriate stop mechanism at a position rotated upward by 30 ° to 45 ° about the second drive shafts 34, 34a with respect to the conveyor surface. There is.

Reference numeral 60 denotes a sensor (sensor for detecting a seedling breakage alarm) that detects that the grass seedlings 12 on the lateral transport section 14 have disappeared (or have decreased). It is attached via a bracket 61. The sensor 60 is linked to an alarm means 62 such as a buzzer or a lamp provided on the monitor panel, and the sensor 60 contacts the stalk portion a while the grass seedling 12 is flowing on the lateral transport section 14. Since the switch is held in the OFF state because it is pressed upwards, when the seedling 12 is cut off, the sensor 60 elastically returns downward and the switch is turned ON, and the alarm means 62 is automatically displayed (or buzzer notification). It is like this. The sensor 60 is attached to the seedling pressing conveyor belt 50 on the side closer to the conveying start end.

Now, the seedling box mounting table 11 is configured as follows. That is, the loop-shaped frame 67 formed by integrally connecting the front and rear horizontal rails 63 and 64 and the left and right vertical rails 65 and 66 is provided below the seedling transfer device 8 from the planting portion 7 via the stays 68 and 69. A front horizontal bar 63 of the frame 67 is provided on the bottom side of the seedling box 10 so as to extend forward through the space and below the middle part in the front-rear width direction of the frame 67 integrally with the frame 67. The front side of the seedling box abuts on the middle horizontal rail 70 and the rear horizontal rail 64 of the frame 67, respectively, so that the nursery box 10 is detachably supported in an inclined posture in which it is supported at three points. In this embodiment, a horizontally long rectangular frame 67 made of a round pipe is fixed to the planting portion 7 with brackets 71, 72 and bolts 73, 74, etc., and is attached via an upper stay 68 and a lower stay 69. When the seedling box 10 is set, the upper part of the side surface of the seedling box 10 is attached to and held by the partition plate 13.

Next, the transmission mechanism of the seedling carrier 8 will be described. Power is introduced from the PTO shaft S of the machine A through the universal joint shaft U into the planting part central transmission case 75, and then branched and one is transmitted to the planting rod 5 via the drive case 4 and the other. Is further branched to a cutting blade support transmission case 25 side and a seedling carrier 8 side by a bevel case 78 via a shaft joint 76 and a universal joint shaft 77 for absorbing assembly error. The power to the 8 side was appropriately changed by the speed change lever 80 in the speed change lever case 79 (the cutting amount of one plant, that is, the number of plantings was adjusted by changing the seedling transfer speed. The rotation speed of the planting rod 5 was constant). After that, it is transmitted to the counter shaft 81 by chain transmission, and from the counter shaft 81 to the second drive shafts 34 and 34a for seedling posture changing / conveying drive by chain transmission, and further to the first by rotation of the gears 82 and 83 which are always meshed. Transmitted to the drive shafts 32, 32a First and second drive shafts 32, 32a, is a pulley 33,35,36,56 fixed to 34,34a is configured to rotate. Reference numeral 84 is a chain tensioner, and 85 and 86 are transmission chains. By the way, a pin clutch 87 of a stapling device is mounted on the shaft ends of the second drive shafts 34, 34a. That is, the input sprocket 88 on the side of the second drive shaft is rotatable with respect to the shafts 34 and 34a, and the pin 90 fixed to the shifter 89 is an input sprocket 91a provided on a clutch lever (bar stop lever) 91. The clutch lever is held in the engaged state by being fitted into the pin hole 88a provided in the shaft 88 and the pin hole 82a provided in the gear 82. When the clutch 90 is tilted to the clutch disengagement side, the pin 90 disengages from the pin hole 82a provided in the gear 82 and the rotation of one of the second drive shafts 34a or 34 is stopped, so that the seedling transfer on one side of the left and right sides is interrupted. ing. Reference numeral 92 is a shifter arm, 93, 94 and 95 are sprockets, and 96 is an output shaft. In addition, in the above-mentioned embodiment, the seedling transplanter for the rush plant 12 which is connected in a band by taping is explained, but the present invention relates to a rose rush plant or a seedling transplanter other than the rush plant. Can also be applied.

In the above-mentioned structure, first, the handle 53 is lifted to erect the seedling pressing / conveying belt 50, and the feeding tip end side of the band-shaped grass seedlings 12 housed in each seedling box 10 is set to the end of the lateral conveying section 14. After placing the seedlings on the belts 14a and lowering the seedling-holding carrier belt 50, when the float A is brought into contact with the paddy field and the machine A is moved forward to start planting, the grass seedlings 12 are stalks near the root b. The part a is conveyed by being in a lying posture while being sandwiched by the lateral conveyance part 14 composed of the endless belt 14a and the seedling pressing conveyance belt 50. Then, from the terminal end of the lateral conveying section 14, the grass seedling 12 is taken over by the endless belts 15a, 15b of the seedling posture changing conveying section 15, and the endless belts 15a, 15b sandwich the middle portion in the direction of the stem and blade gradually from the lying posture to the root. After being transferred to the seedling feeding / cutting device 21 side while being transformed into an upright posture with b downward, the tape T portion was cut one by one from the feeding tip end side with the cutting blade 26 and the receiving blade 27, It is sandwiched by the rotating planting rods 5 and planted continuously on the rice field. By the way, the grass seedlings 12 supplied to the starting side of the lateral conveying section 14 are hard stalks near the root b while the proper feeding posture is maintained by the lateral conveying section 14 consisting of the endless belt 14a and the seedling pressing conveying belt 50. Since the a side is conveyed while being sandwiched with an appropriate pressing force, the feeding posture of the seedlings is not disturbed and the seedlings can be fed smoothly and reliably. Therefore, the seedlings 12 are smoothly taken over to the seedling posture changing and conveying section 15 without any damage or clogging of the seedlings. Moreover, since the tension roller 40 provided on the starting end side of the seedling posture changing / conveying unit 15 is formed in a truncated cone shape along the twisting direction of the endless belts 15a and 15b, the tension pressure of the endless belts 15a and 15b is reduced. The tension is applied evenly over the entire width, and one side of the endless belts 15a and 15b does not float above the tension roller 40 at the tension portion. Therefore, not only is the transfer of the seedlings 12 from the lateral transfer section 14 to the seedling posture changing transfer section 15 always carried out favorably, but the seedling holding action is ensured even though the endless belts 15a and 15b that rotate in a twisted state are used. As a result, the seedlings are not disturbed and the feeding of seedlings is performed accurately in an orderly manner.As a result, the cutting action at the end of the transport for each plant is performed accurately without skewing or variation in the number of cuttings. Therefore, the seedlings can be properly sandwiched by the planting rods 5 in a stable posture. Therefore, the planting posture of the seedlings is always constant and the planting accuracy is greatly improved.

[0014]

[Effect of the device]

 Since the present invention is configured as described above, the tension portion in the seedling posture changing / conveying portion does not lift one side of the belt from the tension roller, so that a substantially uniform tension force is applied to the entire width of the belt. Not only is the transfer of seedlings from the horizontal transfer section to the seedling posture changing transfer section always performed well, but the belt also ensures the retention of seedlings and ensures proper seedling feeding without disturbing the seedling posture. As a result, there is an effect that the planting posture of seedlings can be kept constant.

[Brief description of drawings]

FIG. 1 is a side view showing a state in which a grass transplanter transplanter is attached to a main unit of a riding rice transplanter.

FIG. 2 is a plan view showing a state in which a grass transplanter transplanter is attached to the passenger rice transplanter.

FIG. 3 is a side view of a grass plant transplanter.

FIG. 4 is a perspective view of a main part.

FIG. 5 is a partially cutaway front view of the seedling carrier device without the endless belt.

FIG. 6 is a front view of a seedling cutting part.

FIG. 7 is a plan view of a seedling box mounting table.

FIG. 8 is a schematic explanatory view of a transmission mechanism.

FIG. 9 is an explanatory diagram showing a structure of a transmission mechanism.

FIG. 10 is a cross-sectional view of a line stopper device.

FIG. 11 is a side view of a conventional rush plant transplanting machine.

[Explanation of symbols]

 8 Seedling Conveying Device 12 Bush Seedling 14 Horizontal Conveying Section 14a Endless Belt 15 Seedling Posture Changing Conveying Section 15a Endless Belt 15b Endless Belt 40 Tension Roller

Continuation of front page (72) Inventor Yukinori Takami, 667 Izaiya-cho, Higashi-Izumo-cho, Yatsuka-gun, Shimane Prefecture 1 Mitsubishi Agricultural Machinery Co., Ltd. Agricultural machinery Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. A lateral transport unit for transporting seedlings in a lying posture, and a pair of twists for transforming the seedlings in a lying posture sent by the lateral transport unit into an upright posture corresponding to a proper take-out posture by a planting rod. In a seedling transplanter equipped with a seedling transfer device constructed from a seedling feeding side to a seedling removing side, which comprises a belt and a seedling posture changing / conveying unit, a tension roller provided in the seedling posture changing / conveying unit is arranged along the twisting direction of the belt. A seedling transfer device for a seedling transplanter, which is configured in a truncated cone shape.