JP2009261330A - Seedling transplanter - Google Patents

Abstract

An object of the present invention is to provide a seedling transplanting machine in which muddy water is pushed away in a rotor area so that muddy water is not pushed out to an adjacent seedling planting strip area.
SOLUTION: Grounding is possible with respect to a seedling planting part 4 having a plurality of seedling planting tools 52a provided at a rear part of a traveling vehicle body 2 so as to be movable up and down and in a lateral width direction of the traveling vehicle body 2. This is a seedling transplanter equipped with leveling tools 27a and 27b for leveling the ground, and a V-shaped plate 29 for mud wave dispersion in front of the leveling tools 27a and 27b. The leveling ability is improved even in the cultivating field in the field including many.
[Selection] Figure 4

Description

  The present invention relates to a seedling transplanter with a ground work device.

In a seedling transplanter equipped with a seedling planting device with a float (sometimes referred to as a rice transplanter), a configuration with a rotor for leveling the field just before seedling planting by the seedling planting device is known. ing.
The seedling transplanting machine detects the depth of the seedling planting device using a sensor float provided in the seedling planting device, and detects the height of the seedling planting device with respect to the fielding device based on the detection information. A configuration for controlling the height is provided. In addition, many seedling transplanters have a rotor in front of the seedling planting device, so if the mud waves generated by the rotation of the rotor flow backward and directly hit the front or lower surface of the sensor float, the sensor float May erroneously detect the depth of the cultivator, and erroneously adjust the height of the seedling planting device relative to the cultivator by erroneous detection information sent by the sensor float.

  Therefore, conventionally, seedling transplanters have been known in which a wave breaker is provided between the rotor and the sensor float so that mud waves generated by the rotation of the rotor flow behind and do not directly hit the front or lower surface of the sensor float. (Patent Document 1).

In the present specification, the forward direction of the seedling transplanter is referred to as the front side, the backward direction is referred to as the rear side, and the left-right direction toward the forward direction is referred to as the left side and the right side, respectively.
JP-A-8-23731

  An object of the present invention is to provide a seedling transplanting machine in which muddy water is pushed away in a rotor region so that mud water is not pushed out to an adjacent seedling planting strip region.

The above-mentioned problem of the present invention is solved by the following means.
The invention described in claim 1 includes a seedling planting portion (4) having a plurality of seedling planting tools (52a) provided at the rear portion of the traveling vehicle body (2) so as to be movable up and down, and the seedling planting portion (4). ) And is arranged in the width direction of the traveling vehicle body (2), and is arranged in front of the leveling tools (27a, 27b) for grounding and leveling the ground, and the leveling tools (27a, 27b). It is a seedling transplanting machine provided with the mud-wave dispersion member (29).

  According to the first aspect of the present invention, when the mud wave dispersing member (29) disposed in front of the leveling tools (27a, 27b) is provided, the leveling performance is improved even in a field cultivator including a lot of muddy water. To do.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
1 and 2 are a side view and a plan view of a seedling transplanter equipped with a fertilizer application device as a powder and granule feeding device according to an embodiment of the present invention. In this seedling transplanter 1 with fertilizer application, a seedling planting part 4 is mounted on the rear side of the traveling vehicle body 2 via a lifting link device 3 so that the seedling planting part 4 can be raised and lowered. Is provided.

  The traveling vehicle body 2 is a four-wheel drive vehicle including a pair of left and right front wheels 10 and 10 and a pair of left and right rear wheels 11 and 11 as drive wheels, and a transmission case 12 is disposed at the front of the fuselage. Front wheel final cases 13, 13 are provided on the left and right sides of the case 12, and the left and right front wheels are mounted on the left and right front wheel axles projecting outward from the respective front wheel support portions capable of changing the steering direction of the left and right front wheel final cases 13, 13. 10 and 10 are respectively attached. Further, the front end portion of the main frame 15 is fixed to the rear portion of the transmission case 12, and a rear wheel gear case 18, with a rear wheel rolling shaft provided horizontally in the front and rear sides at the rear left and right center of the main frame 15 as a fulcrum. The rear wheels 11 and 11 are attached to a rear wheel axle 11a that is supported in a freely rolling manner and projects outwardly from the rear wheel gear cases 18 and 18.

  The engine 20 is mounted on the main frame 15, and the rotational power of the engine 20 is transmitted to the transmission case 12 via the belt transmission device 21 and the HST 23. The rotational power transmitted to the mission case 12 is shifted by a transmission in the case 12 and then separated into traveling power and external power to be extracted. A part of the traveling power is transmitted to the front wheel final cases 13 and 13 to drive the front wheels 10 and 10, and the rest is transmitted to the rear wheel gear cases 18 and 18 to drive the rear wheels 11 and 11. Further, the external take-out power is transmitted to a planting clutch case 25 provided at the rear part of the traveling vehicle body 2, and then transmitted to the seedling planting unit 4 by the planting transmission shaft 26, and also the fertilizer application device 5 by the fertilization transmission mechanism 28. Is transmitted to.

The upper part of the engine 20 is covered with an engine cover 30, and a seat 31 is installed thereon. A front cover 32 incorporating various operation mechanisms is provided in front of the seat 31, and a handle 34 for steering the front wheels 10 and 10 is provided above the front cover 32. The engine cover 30 and the front cover 32 have horizontal floor steps 35 on the left and right sides of the lower end. The floor step 35 is partly grid-shaped (see FIG. 2), and mud on the shoe of the worker walking through the step 35 falls on the field. The rear part on the floor step 35 is a rear step 36 that also serves as a rear wheel fender.
Further, on both the left and right sides of the front part of the traveling vehicle body 2, the spare seedling platforms 38, 38 on which the replenishment seedlings are placed can be pivoted to a position projecting laterally from the machine body and a position housed inside. Is provided.

  The elevating link device 3 has a parallel link configuration, and includes one upper link 40 and a pair of left and right lower links 41, 41. These links 40, 41, 41 are pivotally attached to a rear-view portal-shaped link base frame 42 erected on the rear end of the main frame 15, and a vertical link 43 is connected to the tip side thereof. ing. And the connecting shaft 44 rotatably supported by the seedling planting part 4 is inserted and connected to the lower end part of the vertical link 43, and the seedling planting part 4 is connected so as to be able to roll around the connecting shaft 44. An elevating hydraulic cylinder 46 is provided between a support member fixed to the main frame 15 and a tip of a swing arm (not shown) integrally formed with the upper link 40, and the cylinder 46 is expanded and contracted by hydraulic pressure. The upper link 40 pivots up and down, and the seedling planting part 4 moves up and down while maintaining a substantially constant posture.

  The seedling planting section 4 has a six-row planting structure, a transmission case 50 that also serves as a frame, a mat seedling, and a left and right reciprocating motion to supply seedlings to the seedling outlet 51a of each row one by one. When all the seedlings are supplied to the seedling outlet 51a, the seedling feed belt 51b is used to transfer the seedlings downward by a seedling feeding belt 51b, and the seedling planting is carried out in the field. Attaching device 52,..., A pair of left and right drawing markers (not shown) for drawing the aircraft path in the next stroke to the topsoil surface, and the like are provided. In the lower part of the seedling planting part 4, a center float 55 is provided in the center, and side floats 56, 56 are provided on the left and right sides thereof. When the aircraft is advanced with these floats 55, 56, 56 in contact with the mud surface of the field, the floats 55, 56, 56 slide while leveling the mud surface, and the seedling planting device 52, Seedlings are planted by ... Each of the floats 55, 56, and 56 is rotatably mounted so that the front end side moves up and down in accordance with the unevenness of the surface soil surface of the field. During planting work, the vertical movement of the front part of the center float 55 receives the angle sensor ( The planting depth of the seedling is always maintained constant by switching the hydraulic valve that controls the lifting hydraulic cylinder 46 according to the detection result to raise and lower the seedling planting unit 4.

  The fertilizer applicator 5 feeds the granular fertilizer stored in the fertilizer hopper 60 by a certain amount by the feeding portions 61,... And applies the fertilizer to the left and right sides of the floats 55, 56, 56 with the fertilizer hoses 62,. Guided to a guide (not shown),... Is dropped into a fertilization structure formed in the vicinity of the side portion of the seedling planting line by a grooved body 69 provided on the front side of the fertilization guide. Air generated by the blower 58 driven by the blower electric motor 53 is blown into the fertilizer hose 62 through the air chamber 59 that is long in the left-right direction, and the fertilizer in the fertilizer hose 62 is forced by the wind pressure. It is designed to be transported.

  A rotor 27 (27a, 27b) which is an example of a leveling device is attached to the seedling planting unit 4. In addition, the seedling mount 51 is configured to slide in the left-right direction using a support roller 65a of a rectangular support frame 65 having a full width in the left-right direction and the vertical direction that supports the entire seedling planting unit 4 as a rail.

The main part of the rotor support structure is shown in the side view of FIG. 3 and the rear view of FIG. 4, and the main part plan view of the rotors 27a and 27b, the floats 55 and 56, and the seedling planting device 52 part is shown in FIG.
The rotor support structure includes a beam member 66 whose upper ends are rotatably supported on both side members 65b of the support frame 65 of the seedling stage 51, a support arm 67 fixed to both ends of the beam member 66, and the support. A rotor support frame 68 that is rotatably attached to the arm 67 is provided. A drive shaft 70 (70a, 70b) of the rotor 27 (27a, 27b) is attached to the lower end of the rotor support frame 68. The lower end portion of the rotor support frame 68 is connected to a connecting member 71 that is rotatably attached to the transmission case 50.

  As shown in FIG. 5, left and right transmissions 97a and 97b for shifting the power from the engine side are arranged in the rotor drive case 87, and the shifted power from the transmissions 97a and 97b is transmitted to the rear wheels. 11 and 11 and the rotors 27a and 27b.

  As shown in FIG. 5, the rotor (sometimes referred to as the center rotor) 27b located in front of the center float 55 in relation to the arrangement position with the floats 55 and 56 is referred to as the rotor (referred to as side rotor) located in front of the side float 56. It is located in front of 27a. Therefore, the power to the drive shaft portion 70a of the left rotor 27a is transmitted from the gear in the gear case 18 of the rear wheel 11 to the gear in the rotor drive case 87, and from the rotor drive case 87 through the universal joint 72 and the like. The power is transmitted to the drive shaft 70b of the rotor 27b from a chain (not shown) in the chain case 73 to which power is transmitted from the end of the drive shaft 70a of the left rotor 27a inside the vehicle body. The drive shaft 70a of the right rotor 27a is transmitted with power from the drive shaft 70b of the rotor 27b via a right chain (not shown).

  Since the drive shaft portion 70b of the rotor 27b is only supported through a pair of left and right chain cases 73, 73, a reinforcing member 74 that bridges the pair of left and right chain cases 73, 73 to reinforce the chain cases 73, 73. Is provided.

The rotor 27b is suspended by a pair of link members 76 and 77 whose upper ends are supported by the beam member 66 via a spring 78.
The pair of link members 76 and 77 includes a first link member 76 whose one end is fixedly supported by the beam member 66 and a second link member 77 whose one end is rotatably connected to the other end of the first link 76. Thus, the spring 78 is connected between the other end of the second link member 77 and a mounting piece 74a rotatably supported by the reinforcing member 74.

  The beam member 66 is rotated in the direction in which the first link member 76 is rotated upward by the operation of the rotor lifting / lowering motor 63, and the first link member 76 and the second link member are rotated along with the rotation of the beam member 66. The rotor 27 b can be lifted upward via the spring 77 and the spring 78. When the rotor 27b is moved upward, the rotor 27a is also simultaneously moved upward via the drive shaft portion 70b and the drive shaft portion 70a.

  As shown in FIG. 4, since the rotors 27a and 27b can be moved up and down by the rotor lifting / lowering motor 63, when the seedlings are planted with the rotors 27a and 27b while leveling the edge, Switching from the working state of the rotors 27a and 27b in which the shaft of the member 66 is rotatable to the storage state of the rotors 27a and 27b is automatically performed by the rotor lifting and lowering motor 63 in conjunction with the raising of the seedling planting unit 4. It can be configured.

Since the rotor 27b is supported by the seedling planting part 4 via a spring 78 or the like so that the rotor 27b escapes from the lower links 41, 41 when the seedling planting part 4 is raised, the rotor 27a is flexible. Is supported by the seedling planting part 4.
Further, the rotors 27a and 27b may be adjusted to a set height by a rotor height adjustment dial provided on a meter panel (not shown) provided in the vicinity of the control seat 31.

  When the rotor height is set manually, the rotors 27a and 27b may not be used during the next seedling planting operation while the rotors 27a and 27b are moved to the storage position. If the configuration is adjusted to the set height, such a problem can be prevented.

As shown in FIG. 4, a rotor raising / lowering motor 63 is attached to one end of the beam member 66. When the seedling planting portion 4 is raised, the rotors 27a and 27b are lowered, and when the seedling planting portion 4 is lowered, the rotor is moved. 27a and 27b may be configured to rise. As a result, the rotors 27a and 27b can be lowered at the time of turning, and only the turning trace can be leveled. In this case, the control device 100 controls the drive of the rotor lifting / lowering motor 63 by turning on the lifting / lowering link sensors 94 (FIG. 3) of the upper and lower links 40 and 41 of the seedling planting unit 4 and the rotor interlocking on / off switch 96 (FIG. 2). Do. In the case of such a configuration, the rotor elevating motor 63 can be automatically operated, so that the operability is improved.
As shown in FIG. 3, a rotor cover 37 is provided on the upper rear side of the rotors 27 a and 27 b so that mud is not applied to the floats 55 and 56.

  As described above, the rotors 27a and 27b are usually lifted by operating the rotor lifting / lowering motor 63, but in this embodiment, a saddle clutch (see FIG. When the hook clutch lever 19 (FIG. 2) is turned off, the rotor lifting / lowering motor 63 is operated to automatically lower the rotors 27a and 27b to perform leveling work.

For this purpose, a saddle clutch lever sensor 19a (FIG. 4) for detecting whether the saddle clutch lever 19 is on or off is provided.
Therefore, when the heel clutch is disengaged by operating the heel clutch lever 19 in order to adjust the number of planting strips in the headland and the vicinity thereof, the heel clutch lever sensor 19a detects the disconnection of the heel clutch lever 19 and controls it. The apparatus 100 (FIG. 4) can automatically lower the rotors 27a and 27b to perform leveling work. Thereby, it is possible to reliably level the headland or the vicinity of the headland which is likely to be rough in the field.

  Moreover, as shown in FIG. 4, when the V-shaped plate 29 for dispersing mud waves is provided in front of the rotors 27a and 27b, the leveling performance is improved even in a farming field in a farm field that contains a lot of mud water. The V-shaped plate 29 is shown only in FIG.

Further, when the structure is such that the left and right rotors 27a, 27a can be driven independently as shown in FIG. 5, when one rotor 27a gets over a large soil mass, the seedling planting section 4 As a configuration for forcibly increasing the rotational speed of the rotor 27a, which has been raised by rolling in the left-right direction, by the left and right transmissions 97a, 97b, a large earth lump is broken by the rotor 27a to level the ground.
Thus, the leveling ability and rolling controllability can be improved as compared with the prior art.

  Also, in the configuration of the rotors 27a and 27b shown in FIGS. 3 to 5, when the seedling planting part 4 is raised when the seedling transplanter 4 is stored in a warehouse or the like of the seedling transplanter, the center rotor 27b hits the links 76 and 77, and the center The rotor 27b is pressed downward to be close to the ground, and the storage height of the seedling planting part 4 is lowered. Therefore, there is a problem that the center rotor 27b hits the ground or the water surface in Fukada.

Therefore, the diameter of the center rotor 27b can be made smaller than the diameter of the side rotor 27a, and the height when the center rotor 27b is stored can be made relatively high.
However, when the diameter of the center rotor 27b is smaller than the diameter of the side rotor 27a, the peripheral speed of the center rotor 27b and the peripheral speed of the side rotor 27a are different if the rotational speeds of the two types of rotors 27a and 27b are the same. Therefore, the leveling condition varies.
Therefore, when the diameter of the center rotor 27b is smaller than the diameter of the side rotor 27a, the rotational speed of the center rotor 27b is made faster than the rotational speed of the side rotor 27a, and the peripheral speeds of both the rotors 27a and 27b are matched. The seedling transplanter can move forward smoothly.

Further, as shown in FIG. 5, the rotor drive shaft portion 70b is extended on both sides of the rotor 27b, and brushes 33, 33 are attached to both ends of the rotor drive shaft portion 70b, and the rear wheels 11, 11 are attached by the brushes 33, 33. The configuration to remove mud from the spoke part is shown.
This wheel mud dropping brush 33 uses the rotational driving force of the rotor 27b, and mud can be removed while the seedling transplanter is traveling straight or turning, which helps the wheel cleaning operation.

  When the seedling transplanter equipped with the rotor 27 is to be used as a multi-purpose rice transplanter such as a grooving machine or a weeding machine, the rotor 27 is configured to be detachable, and then the rotor 27 is removed. It is necessary to be able to install a grooving machine or weeding machine for the first time.

  FIG. 6 shows a side view of the main part of the mounting portion of the rotor 27a. When the rotor 27a is detachably attached by a hitch 98 attached to the tip of the upper and lower links 40 and 41, and the grooving machine or weeder 99 is attached to the upper and lower links 40 and 41, the rotor 27a is attached to the upper and lower links 40, 41. , 41 hits the grooving machine or weeding machine 99 as shown in FIG. 6, so the rotor 27a is removed and the grooving machine or weeding machine 99 is attached to the upper and lower links 40, 41 via the hitch 98. There is a need to.

  By using the configuration shown in FIG. 6 above, it is possible to prevent the rotor 27 from coming into contact with the seedling grown to some extent during the grooving operation or the weeding operation using the grooving machine or the weeding machine 99, and damaging the seedling. Further, if the rotor 27 is operated during the grooving operation or during the grooving operation, the soil can be prevented from being loosened and flowing.

  FIG. 7 shows a schematic side view of the vicinity of the connecting portion between the upper link 40 and the lower link 41 which are link members between the seedling planting portion 4 and the traveling vehicle body 2 in the seedling transplanting machine for Fukada. When the seedling planting part 4 is in Fukada and the seedling planting part 4 sinks, the center rotor 27b and the upper and lower links 40 and 41 also sink, so the lower link 41 may come into contact with the center rotor 27b. Thus, the portion of the lower link 41 that may come into contact with the center rotor 27b is curved so as to avoid contact with the center rotor 27b.

  Further, in the plan view of FIG. 8A and the configuration example of the rotor portion of the seedling transplanter shown in FIG. 8B, only one rotor 27 is used to reduce the cost, and the side floats 56 and 56 It is located at a position that is forward and crosses the center float 55. For this purpose, the center float 55 is provided with a curved portion 55a, and the rotor 27 is disposed below the curved portion 55a. As shown in FIG. 8B, when the center float 55 is provided with a curved portion 55a and the rotor 27 is disposed below the curved portion 55a, the ground pressure by the center float 55 is different from that of the center float 55 shown in FIG. Compared to that, it is not so inferior.

  In addition, the configuration example of the rotor portion of the seedling transplanter shown in the plan view of FIG. 9A and the side view of FIG. 9B also has only one rotor 27 in order to reduce the cost. The rotor 27 is disposed in front of the side float 56 and at a position crossing the center float 55. In this case, the center float 55 is divided into two front and rear, the rotor 27 is arranged in the divided region, and the center float 55 divided into two front and rear is connected from the lower side of the rotor 27.

  In the present invention, the seedling planting part of the rice transplanter can be configured simply and has a high possibility of use.

It is a side view of the seedling different syrup seedling transplanting machine of the Example of this invention. It is a top view of the seedling transplanting machine of FIG. It is a principal part side view of the seedling planting part of the seedling transplanting machine of FIG. It is a principal part rear view of the support structure of the seedling mounting stand of the seedling transplanting machine of FIG. It is a principal part top view of the seedling planting part of the seedling transplanting machine of FIG. It is a principal part side view of the attaching part of the rotor in the case of using the seedling transplanting machine of FIG. 1 as a multipurpose seedling transplanting machine. FIG. 2 is a schematic side view of the vicinity of a connecting part of a link member between a seedling planting part and a traveling vehicle body when the seedling transplanting machine of FIG. 1 is used as a seedling transplanting machine for Fukada. They are a top view (Drawing 8 (a)) and a side view (Drawing 8 (b)) of the example of composition of the rotor part of a low-cost seedling transplanter. It is a top view (Drawing 9 (a)) and a side view (Drawing 9 (b)) of an example of composition of a rotor part of a low-cost seedling transplanter.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Seedling transplanter with fertilizer application 2 Traveling vehicle body 3 Elevating / lowering link device 4 Seedling planting part 5 Granule feeding device (fertilizer) 10 Front wheel 11 Rear wheel 11a Rear wheel drive shaft 12 Mission case 13 Front wheel final case 15 Main frame 16 Transmission lever 18 Rear wheel gear case 19 畦 Clutch lever 19a 畦 Clutch lever sensor 20 Engine 21 Belt transmission 23 HST
25 Planting clutch case 26 Planting transmission shaft 27 (27a, 27b) Rotor
28 Fertilizer transmission mechanism 29 V-shaped plate 30 Engine cover 31 Seat 32 Front cover 33 Brush 34 Handle 35 Floor step 36 Rear step 37 Rotor cover 38 Spare seedling table 40 Upper link 40a Protrusion 41 Lower link 42 Link base frame 43 Vertical Link 44 Connecting shaft 45 Rotor height adjusting lever 46 Elevating hydraulic cylinder 47 Chain case 48 Rotor height adjusting member 48a Long hole 49 Spring 50 Transmission case 51 Seedling stand 51a Seedling outlet 51b Seedling feeding belt 52 Seedling planting device 52a Seedling Planting tool 53 Blower electric motor 54 Output shaft 55 Center float
56 Side float 57 Elastic body
58 Blower 59 Air chamber 60 Fertilizer hopper 61 Feeding part 62 Fertilizer hose 63 Rotor lifting / lowering motor 64 Sprocket 65 Seedling planting part support frame
65a Support roller 65b Side member 66 Beam member 67 Support arm 68 Rotor support frame 69 Groove 70 (70a, 70b) Drive shaft 70b 'Universal joint 71 Connecting member 72 Universal joint 73 Chain case 74 Reinforcing member 74a Mounting piece 76 First link member 77 Second link member 78 Spring 80 Planting depth rolling stay 81 Float adjustment pipe 87 Rotor drive case 94 Lift link sensor 96 Rotor interlocking on / off switch 97a, 97b Transmission 98 Hitch 100 Control device

Claims (1)

A traveling vehicle body (2), and a seedling planting portion (4) having a plurality of seedling planting tools (52a) provided to be movable up and down at the rear in the traveling direction of the traveling vehicle body (2);
A plurality of ground leveling tools (27a, 27b) which are arranged in the width direction transverse to the traveling direction of the traveling vehicle body (2) and are grounded to level the ground by being movable up and down with respect to the seedling planting part (4). )When,
A seedling transplanter comprising: a mud wave dispersion member (29) disposed in front of the traveling body (2) in the traveling direction from the leveling tool (27a, 27b).

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