JP3669110B2 - Seedling planting machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a seedling planting machine provided with a fertilizer application device on a traveling vehicle body .
[0002]
[Prior art]
Conventionally, engine power is transmitted via a crank to intermittently rotate a feed rotor, and the lateral width of a feed groove provided in the feed rotor is expanded and reduced to adjust the feed amount of fertilizer.
[0003]
[Problems to be solved by the invention]
In the above prior art, if the granular fertilizer having a large particle size is used, when the horizontal width of the feed groove is narrowed to reduce the feed amount of fertilizer, the amount of fertilizer entering the narrow groove varies and is dispersed. The amount could be unstable. In addition, since the feeding rotor rotates intermittently, vibration is generated.
[0004]
[Means for Solving the Problems]
In the present invention, the feed rotor rotates to feed the fertilizer in the tank 61 to the blow pipe 59, and the fertilizer fed to the blow pipe 59 passes through the tube 60 with the air blown from the air chamber 57. In the seedling planting machine provided with the fertilizer application device 2 to be sprayed on the traveling vehicle body 1, the upward feeding transmission shaft 36 that is rotated by the power of the engine 9 of the traveling vehicle body 1 is transmitted to the feeding rotor to transfer the feeding rotor. with a configuration that is continuously rotating, the feed-out feeding Russia from the transmission shaft 36 - provided with a transmission the transmission path to the data, rotatably mounted in the horizontal axis 74 to a support plate 71 which projects after from the air chamber 57 The shift lever 73 is provided at a position where the shift lever 73 can be operated from the seat 10, and the transmission device is configured such that the shift device can be shifted by the shift lever 73 .
[0005]
【Example】
Next, an embodiment of the present invention will be described.
A seedling transplanter 3 having a fertilizer application device 2 is attached to the traveling vehicle body 1 to form a seedling transplanter (rice transplanter) (FIGS. 1 and 2).
The traveling vehicle body 1 is configured as follows. A main gear box 5 and a rear wheel gear box 6 are provided in front of and behind the frame 4, and a front wheel 7 and a rear wheel 8 are arranged on both sides of each. The engine 9 is mounted on the frame 4 and its power is changed to a desired number of revolutions by a transmission in the main gear box 5, and then reaches the front wheels 7 and the rear wheels 8, which rotate on the paddy field. Thus, the traveling vehicle body 1 is made to travel.
[0006]
When the seat 10 is provided on the engine 9 and the steering handle 11 in front of the seat 10 is operated, the front wheels 7 are steered to change the course of the traveling vehicle body 1.
A pair of left and right support columns 12 extend upward from the rear portion of the frame 4. Both front and rear ends of a pair of left and right parallel links 13 and 14 are attached to the column 12 and the lifting frame 15, respectively. A piston rod 17 protrudes obliquely upward from a hydraulic cylinder 16 attached to the frame 4, and its protruding end is connected to an arm 18 integral with the upper link 13. When oil is supplied to the hydraulic cylinder 16, the piston rod 17 extends and the elevating frame 15 rises. When the oil is returned to the tank, the piston rod 17 returns and the elevating frame 15 descends, and the oil is hydraulically supplied. When confined in the cylinder 16, the elevating frame 15 is kept in that position.
[0007]
The seedling planting device 3 is configured as follows. A seedling gear box 19 is attached to the lifting frame 15 so as to be swingable about a rolling shaft in the front-rear direction. Three seedling frames 20 extend from the seedling gear box 19 at equal intervals, and an intermediate oval rotating case 21 is attached to both sides of each rear part. A pair of implantation rods 22 are attached to both ends of the respective rotating cases 21. When the rotating case 21 is rotated counterclockwise in FIG. 1 by the power of the engine 9, the planetary gears therein make the implant cage 22 turn in the same direction while maintaining the same posture. .
[0008]
A seedling receiving plate 23 having an L-shaped cross section is disposed horizontally and attached to the seedling planting frame 20. A pair of struts 24 extend forward from the front part of the right and left seedling planting frames 20, and a seedling mount 25 is supported by the upper part thereof and the front part of the seedling receiving plate 23 so as to be movable left and right. A laterally moving rod 26 that reciprocates left and right by the power of the engine 9 protrudes from the seedling gear box 19 to the left and right, and its tip and the seedling mounting table 25 are connected by a rod 27 so that the seedling mounting table 25 is reciprocated. It has become. The seedling mount 25 is inclined obliquely forward and is divided by five partition walls 28 in the middle, and six group seedlings of approximately 30 cm × 60 cm are placed side by side. Each group seedling moves to the left and right with its rear end protruding on the seedling receiving plate 23. Six seedling outlets 23k are provided at equal intervals in the seedling receiving plate 23, and the tips of the pair of planting ridges 22 pass alternately when the swivel descends, and the ends of the group seedlings reaching above And is transplanted into mud at the lower end of the swivel. A belt conveyor 29 is provided on the seedling stage 25, and when the seedling stage 25 comes to the left and right ends by the above movement, it is driven to feed out the group seedlings thereon to the seedling receiving plate 23 side.
[0009]
Three floats 30 are arranged side by side, and when the traveling vehicle body 1 moves forward, it slides on the mud surface of the paddy field, and when the seedlings are transplanted, the overhanging portions of the respective front portions are leveled in advance. ing. A pivot shaft 31 operated by the operator of the seat 10 is provided on the lower abdomen of the seedling-planting frame 20, a plurality of arms 32 project later, and the rear part of each float 30 pivots on the rear end of the arm 32 with a pin When the float 30 is attached freely and moved up and down, the planting depth of the seedling can be adjusted.
[0010]
The center float 30 becomes a sensor float, and oil is supplied to and discharged from the hydraulic cylinder 16 by the vertical movement of its tip, and the seedling planting device 3 is supported at a certain height from the mud surface even when the cultivator is shallow. It is made to be done.
A clutch case 33 is fixed between the pair of struts 12, and the power of the engine 9 in the main gear box 5 is introduced into the PTO shaft 34 by way of an implanted clutch (not shown) therein. The rear seedling planting transmission shaft 35 and the upward feeding transmission shaft 36 are reached (FIG. 8). The planting clutch is configured as a fixed position stop clutch, and when the pin 37 is pulled up, the seedling planting transmission shaft 35 and the feeding transmission shaft 36 start to rotate, reciprocate to the left and right of the seedling mounting table 25 and the planting basket 22 When the pin 37 is pushed down by turning, the seedling planting transmission shaft 35 and the feeding shaft 36 are stopped from rotating at the position where the planting basket 22 is lifted from the mud surface.
[0011]
The lateral width reducing device of the seedling planting device 3 is configured as follows.
The left partition wall 28 is composed of two plates and extends upward, and the respective upper ends are connected by hinges 38 (FIG. 5). Then, when the seedling stage 25 comes to the left end, the above-mentioned implantation clutch is turned “off” and the left end portion of the seedling stage 25 is folded around the hinge 38, as shown in FIG. The width of 25 is reduced.
[0012]
A square tube 23t is integrally provided on the front part of the back surface of the seedling receiving plate 23, and the rigidity is enhanced. The seedling receiving plate 23 is divided into a central portion 23A and a lateral end portion 23B outside the seedling mounting base 25 folded as described above (FIG. 4). Since the left and right are symmetrical, the left end portion will be described below. The guide plate 39 is divided into an inner end portion 39A and an outer end portion 39B, both of which are connected by a hinge 40 so as to rotate around a vertical axis 41 (FIG. 7). The inner end portion 39A is attached to the back surface of the end of the central portion 23A so as to rotate around a shaft (bolt) 42 in the front-rear direction. The outer end portion 39B is attached to the back surface of the lateral end portion 23B with the accessory plate 43 interposed therebetween, and the bolt 44 inserted from the accessory plate 43 enters the elongated hole 39h of the outer end portion 39B, and the lateral end portion 23B is the outer end portion 39B. It is made to slide in the longitudinal direction. The tip of the pin 45 protruding inward from the accessory plate 43 is inserted into the hole 41 a of the shaft 41. Further, the tip of the knock pin 46B of the lateral end portion 23B is inserted into the knot hole 46A (FIG. 6) of the central portion 23A. A snap lock 47 is provided between the outer end portion 39B and the lateral end portion 23B, and when tightened, the lateral end portion 23B is drawn toward the central portion 23A.
[0013]
Therefore, when the snap lock 47 is released in FIG. 7 and the lateral end portion 23B is pulled out, the bolt 44 is guided by the long hole 39h and moved outward, and the pin 45 and the knock pin 46B are respectively moved from the hole 41a and the knock hole 46A. Exit. When the end of the lateral end portion 23B is lifted, it rotates around the shaft 42 and rotates counterclockwise in FIG. 7 (dashed line in FIG. 7). After that, when the end of the horizontal end portion 23B is pushed forward, it rotates around the shaft 41 and the upper end is lowered (FIGS. 5 and 6).
[0014]
When the pin 48 protrudes downward from the accessory plate 43 (FIG. 7) and the lateral end portion 23B is folded as described above, the pin 48 engages with the spring clip 49 of the seedling planting frame 20 (FIG. 6). .
Since the lateral end portion 23B folded in this way does not exist in the left / right movable range of the left / right moving parts such as the seedling platform 25 and the belt conveyor 29, the lateral end portion 23B is mistakenly folded while being folded down. Even if the left / right moving part is moved left / right, it will not be damaged by interference.
[0015]
Note that the lateral end portion 23B folded as described above is spliced to the central portion 23A when operated in reverse.
A guard that also serves as a stand is configured as follows. The square tube 50 protrudes outward from the right and left seedling planting frames 20 (FIG. 4, but only left). A front / rear pin 51 is rotatably attached to the square tube 50. The inner surface of the mounting plate 52 is in contact with the outer end of the square tube 50, and a pair of pins 53 that are connected to the pins 51 are pulled by the springs 54 to be attracted. The bar 55 protruding outward from the plate 52 is bent after seeing from above, and protects the protruding portion of the seedling receiving plate 23.
[0016]
When the seedling device 3 is raised and the bar 55 is pulled out, the spring 54 is compressed and the plate 52 is separated from the end face of the square tube 50. When the bar 55 is pushed down, it turns with the pin 51 and faces downward. When the pulled force is removed, the plate 52 is attracted to the lower surface of the square tube 50 by the spring 54. When the raising seedling planting device 3 is lowered, the lower end of the bar 55 comes into contact with the ground and the descent stops.
[0017]
According to this configuration, when the bar 55 is opened as a stand and the seedling planting device 3 is supported, the load is received by the lower surface of the square tube 50, so that the strength is increased and the support is stabilized.
The fertilizer applicator 2 is configured as follows. Grooves 56 are mounted on either side of each float 30 to create fertilizer grooves in the mud surface next to each shoot to be transplanted (FIG. 1). A horizontally long air chamber 57 is fixed on the support column 12 and air is blown in by a blower 58 at the left end. Six blow-out pipes 59 project rearward from the air chamber 57, and each projecting end and the groove forming device 56 are connected by a flexible tube 60. When the tank 61 is disposed on the blowing pipe 59 and the feeding shaft 62 (FIG. 10) rotates, the feeding rotor (not shown) rotates and the fertilizer in the tank 61 is fed to the intermediate portion of the blowing pipe 59. It is like that. Accordingly, the fertilizer fed into the blow-out pipe 59 is sent through the tube 60 by the air blown out from the air chamber 57, and is sprayed from the grooving device 56 to the fertilizer grooves formed by the fertilizer.
[0018]
As is well known, the feeding rotor is provided with a plurality of horizontally long feeding grooves on the cylindrical surface, and when the adjusting shaft 76 of FIG. 10 is turned, the horizontal width of the feeding groove is expanded and reduced so that the amount of fertilizer fed can be adjusted. ing.
The power transmission device for the feeding rotor is made as follows. The upper part of the feeding transmission shaft 36 is constituted by a square tube, and the square shaft 63 is slidably inserted into this (FIG. 8). The bevel gear 63a at the upper end of the square shaft 63 is bitten by the bevel gear 64a fixed to the intermediate shaft 64 (FIG. 9). A large gear 65A and a small gear 65B are fixed to the intermediate shaft 64. A small gear 66 </ b> A and a large gear 66 </ b> B meshing with each other are rotatably provided on the transmission shaft 67. When the clutch 68 provided on the transmission shaft 67 so as not to rotate with a key or spline moves to the left, the pawl engages with the pawl of the small gear 66A, the transmission shaft 67 rotates at a high speed, and the clutch 68 moves to the right. When the nail of the large gear 66B is bitten, the transmission shaft 67 rotates at a low speed. A gear 69 fixed to the transmission shaft 67 is bitten by a gear 70 fixed to the feeding shaft 62, and the power of the engine 9 is replaced with the conventional intermittent rotation by the crank, and the feeding rotor is provided by continuous rotation of the gear and transmission shaft provided with a transmission. Has been communicated to.
[0019]
Conventionally, as described above, the lateral width of the feeding groove provided in the feeding rotor has been expanded and reduced to adjust the feed amount of the fertilizer. However, when a granular fertilizer having a large particle size is used, the lateral width of the feeding groove is adjusted. When the feed rate of fertilizer was reduced by narrowing the width of the fertilizer, the amount of fertilizer entering into the narrow groove could vary, and the application rate could become unstable. According to this configuration, by reducing the rotation of the feeding rotor, a small amount of fertilizer can be fed out with a wide feeding groove, and thus the above-described fear is eliminated. In addition, because of continuous rotation, the vibration due to intermittent rotation was reduced and the amount of fertilizer fed was further stabilized.
[0020]
In practice, the adjustment of the lateral width of the feeding groove and the speed change of the feeding rotor can be used in combination.
The transmission operating device is configured as follows. As shown in FIG. 10, the vertical shaft 72 is rotatably supported by the support plate 71 that protrudes later from the air chamber 57. When the shifter fork 72 a is engaged with the clutch 68 and the shaft 72 rotates, the clutch 68 is rotated. Moves to the left and right. The lower portion of the speed change lever 73 that can be operated from the seat 10 is pivotally attached to the support plate 71 by a horizontal shaft 74, and an arm (not shown) that protrudes to the right from the shaft 72 and the lower portion of the speed change lever 73 is a rod 75. The clutch 68 is moved to the right at the position of the solid line in FIG. 10, and the clutch 68 is moved to the left at the position of the chain line.
[0021]
【effect】
As described above, according to the present invention, a transmission is provided in the transmission path from the upward feeding transmission shaft 36 to the feeding rotor, and the support plate 71 protruding rearward from the air chamber 57 can be rotated by the horizontal shaft 74. A small amount of fertilizer can be fed out with a wide feeding groove by slowing down the rotation of the feeding rotor by the speed change operation of the speed change lever 73 that can be operated from the seat 10. Even if the amount is small, the spraying amount is stable and the conventional problems are solved. In addition, because of the continuous rotation, the vibration based on the intermittent rotation is reduced, and the amount of fertilizer fed is further stabilized.
[Brief description of the drawings]
FIG. 1 is a side view of a seedling planting machine according to the present invention. FIG. 2 is a plan view thereof. FIG. 3 is a plan view in which the width of the seedling planting device is reduced. FIG. 5 is a side view thereof. FIG. 6 is an enlarged side view of a part thereof. FIG. 7 is a view of a part thereof as viewed in the direction of arrow A in FIG. FIG. 9 is a rear view thereof. FIG. 10 is a side view of a part of the fertilizer applying apparatus.
DESCRIPTION OF SYMBOLS 1 ... Traveling vehicle body, 2 ... Fertilizer, 9 ... Engine, 10 ... Seat, 36 ... Feeding transmission shaft, 57 ... Air chamber, 59 ... Blowing pipe, 60 ... Tube, 61 ... Tank , 71 ... Support plate, 73 ... Shift lever, 74 ... Horizontal axis

Claims (1)

Feeding Russia - fertilizers and motor rotation in the tank (61) is fed to the outlet pipe (59), Ju in the air blown out from該吹outflow tract (59) to the fed-out fertilizer air chamber (57) - Bed ( 60) In a seedling planter provided with a fertilizer application device (2) sprayed through the interior of the traveling vehicle body (1) , an upward feeding transmission shaft (36 rotated by the power of the engine (9) of the traveling vehicle body (1) ) from the supply b - to the transmission to the motor and該繰Delo - with a configuration for continuously rotating the motor, from the feeding transmission shaft (36) feeding b - the transmission is provided to the transmission path to data, the air chamber ( 57), a shift lever (73) attached to a support plate (71) protruding later from the seat (10) is provided at a position where the shift lever (73) can be operated from the seat (10). A seedling transplanter configured to change the speed of the transmission .

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