JP2001161120A - Seedling transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a functionally excellent arrangement of a transmitting part for a seedling planting device and its supporting frame in a seedling transplanter of a constitution for transmitting a power through the transmitting part for the seedling planting device arranged on the rear side of a seedling- carrying platform to the seedling planting device in each row. SOLUTION: This seedling transplanter is obtained by arranging an input route to a transmitting part 112 for the seedling planting device in a position passing under the seedling-carrying platform 38 and bending the input route in a part just under the seedling-carrying platform 38 so as to be convex downward. When the seedling planting device 39 is kept in a state for taking out seedlings from the seedling-carrying platform 38, a regulating tool 83d for the amount of uprooting of the seedlings of the seedling planting device 39 and a frame 44 for supporting the transmitting part 112 for the seedling planting device 39 are arranged so as not to overlap when viewed from the side. A part of the transmitting part 112 for the seedling planting device 39 is installed in the frame 44 supporting the transmitting part 12 for the seedling planting device 39.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling transplanter having a structure for transmitting to a seedling planting device of each line via a seedling planting device transmitting portion disposed on the rear side of a seedling mounting table.

[0002]

2. Description of the Related Art In a seedling transplanter provided with a seedling mounting portion provided with a seedling mounting table, a seedling transplanting device, and the like behind a traveling vehicle body, a seedling mounting table is provided in order to improve the front-rear weight balance of the body. There is a configuration in which the transmission is transmitted to the seedling planting device of each line via a seedling planting device transmission portion arranged on the rear side, and a heavy seedling mounting table is positioned as forward as possible.

[0003]

In the above-described seedling transplanter, a frame for supporting the seedling plant transmission unit and an input path to the seedling plant transmission unit are arranged below the seedling mounting table. Due to this, the conventional one has the following problems. (1) Since the position of the seedling mounting table is high, the seedling transfer distance from the seedling mounting table to the top soil surface of the field is long, and the planting accuracy of the seedlings is not stable. (2) When adjusting the amount of seedlings collected by the seedling planting device, the frame supporting the transmission portion of the seedling planting device becomes an obstacle. (3) Compared with a configuration in which the seedling mounting device is directly transmitted from the front of the seedling mounting table to the seedling transplanting device, an extra frame for supporting the seedling transplanting device transmission unit is required, so that the weight of the seedling transplanting portion is heavy. .

The present invention relates to a seedling transplanter in which a frame for supporting the seedling plant transmission unit and an input path to the seedling plant transmission unit are arranged below the seedling table. Therefore, the following configuration has been adopted.

[0005]

That is, the seedling transplanter according to the first aspect of the present invention transmits the seedlings to each row of seedlings via a seedling transplanter transmission unit disposed on the rear side of the seedling mounting table. In the seedling transplanter, the input path to the seedling plant transmission unit is arranged at a position passing below the seedling mounting table, and is bent so as to be convex downward just below the seedling mounting table. It is characterized by.

A seedling transplanter according to a second aspect of the present invention is the seedling transplanter, wherein the seedling transplanter is transmitted to the seedling planting device of each strip via a seedling planting device transmitting portion disposed on the rear side of the seedling table. When the seedling planting apparatus is in a state of taking out seedlings from the seedling mounting table, the seedling picking amount adjuster of the seedling planting apparatus and the frame supporting the seedling planting device transmission unit do not overlap in a side view. It is characterized by being arranged in.

[0007] Further, the seedling transplanter according to the third invention comprises:
In a seedling transplanter that transmits to a seedling planting device of each line via a seedling planting device transmitting portion disposed on the rear side of a seedling mounting table, a seedling planting device is mounted in a frame that supports the seedling planting device transmitting portion. It is characterized in that a part of the transmission part is provided.

[0008]

Preferred embodiments of the present invention will be described below with reference to the drawings. In the seedling transplanter 1 shown in FIGS. 1 to 7, a six-row seedling planting section 4 is attached to the rear side of the riding traveling vehicle body 2 via a lifting link device 3 so as to be able to move up and down. The main part of the fertilizer applicator 5 for spraying fertilizer is provided near the side of each planting strip, and is configured as a riding fertilizer rice transplanter as a whole.

The traveling vehicle body 2 is a four-wheel drive vehicle including a pair of left and right front wheels 10, 10 and rear wheels 11, 11, which are drive wheels. Front wheel final cases 13, 13 are provided on the left and right sides of a transmission case 12 arranged at the front of the fuselage, and the front wheels 10, 10 are attached to front wheel axles projecting outward from lower portions of the front wheel final cases 13, 13. ing. A front end portion of a main frame 15 is fixed to a rear portion of the transmission case 12, and a rear wheel gear case is provided so as to freely roll around a rear wheel rolling shaft provided horizontally at the rear end of the main frame 15 on the left and right sides. The rear wheels 11, 11 are attached to a rear axle that projects outward from a rear wheel gear case.

The rotational power of the engine 20 mounted on the main frame 15 is transmitted to the transmission case 12 via a first belt transmission 21 and a second belt transmission 23 capable of continuously variable transmission operation. After being shifted by the gear type transmission mechanism in the transmission case 12, the front wheels 10,
The transmission is transmitted to the seedling planting section 4 and each operating section of the fertilizer application device 5 while being transmitted to the rear wheel 10 and the rear wheels 11 and 11.

The seat 25 is installed on an engine cover 26 that covers an upper part of the engine 20. In front of the seat 25, a steering wheel 27 for steering the front wheels 10, 10 is provided. On the left and right sides of the front of the traveling vehicle body 2, there are provided spare seedling mounts 28 on which seedlings for replenishment are placed.

The lifting link device 3 has a parallel link configuration, and includes one upper link 30 and a pair of left and right lower links 31 and 3.
1 is provided. These links 30, 31, 31 are rotatably mounted on a link base frame 32 erected on the rear end of the main frame 15 on the base side, and a vertical link 33 is connected to the distal end side. And the rolling shaft 4a of the seedling planting part 4 is connected to the vertical link 33,
The seedling planting part 4 is mounted so as to be freely rollable. A hydraulic elevating cylinder 35 is interposed between a support member fixed to the main frame 15 and a distal end of a swing arm 34 integrally formed with the upper link 30. Pivots up and down, and the seedling planting section 4 attached to the vertical link 33 moves up and down with a substantially constant posture. The hydraulic lift cylinder 35 is controlled to expand and contract by a hydraulic lift valve 36 provided on the traveling vehicle body 2.

The seedling planting section 4 has a six-row planting structure, and seedling loading tables 38 for supplying seedlings one by one to a predetermined seedling outlet, and seedlings supplied to the seedling outlet are planted in a field. Six sets of seedling planting devices 39,..., A center float 40 and side floats 41, 41 for leveling the surface of the field prior to seedling planting
And The seedling-planting frame supporting them is provided with a transmission case 43 located at the center in the left and right directions and provided with the rolling shaft 4a, and a front and rear portion having a front end connected to the transmission case and a rear portion extending obliquely upward. Frame 44,
44, 44, a left and right connecting pipe 45 for connecting the front ends of the front and rear frames, an input case 46 provided adjacent to the right side of the rear end of the central front and rear frame 45, and a rear end of each front and rear frame It is composed of a connecting plate 47 for connecting them, a seedling support frame 48 having a base fixed to the front ends of the front and rear frames 44 at the left and right ends.

The seedling mounting table 38 is provided in a forwardly inclined posture in which the front side is higher, and is supported movably left and right on the back side of the seedling mounting surface divided into six surfaces. The supporting structure is such that engagement sliding contact members 51,.
And the engaging sliding member is connected to the front and rear frames 44 and 4.
Left and right long support rails 5 provided on the upper front end of 4,44
2 are slidably engaged with left and right, and rollers 53,... Attached to the upper end of the seedling support frame 48 are fixed to the upper rear surface of the seedling mounting portion. 54.

The support rail 52 is integrally formed with a seedling receiving frame 52a having an L-shaped cross section for receiving the lower end surface of the seedling on the seedling mounting table. In the position corresponding to each seedling planting device of the seedling receiving frame 52a, a U-shaped notched seedling outlet 55,... Is formed. As the seedling table 38 reciprocates left and right by a left-right moving mechanism described later, the seedlings located at the lower end of each seedling mounting portion are sequentially supplied to the seedling outlets 55. A seedling 83, which will be described later, of the seedling planting device 41 passes through the seedling outlet 55, and the seedlings are divided into one plant and taken out.

The support rail 52 is supported as described below. That is, support rail mounting members 59 are provided on brackets 57 fixed to the front and rear frames 44 so as to be slidable in the inclination direction of the seedling mounting table, and the support rails 52 are mounted on the support rail mounting members. In addition, bracket 5
The left and right seedling picking amount adjusting pipes 60 are rotatably fitted to the right and left seedling picking amount adjusting pipes, and the leading end portions of the seedling picking amount adjusting arms 61,.
9 are connected by pins 62. When the seedling picking amount adjusting lever 63 is operated to rotate the seedling picking amount adjusting pipe 60, the support rail mounting members 59,... And the support rails 52 move in the tilting direction of the seedling mounting table 38, thereby planting. Tool 83
Of seedlings (vertical length of one plant) is adjusted.
Reference numeral 64 denotes a lever guide for fixing the seedling collection amount adjusting lever 63 to an arbitrary position in a plurality of stages, and is attached to the intermediate frame 48 a of the seedling mounting support frame 48.

Since the middle frame 48a of the seedling table support frame 48 has a shape in which the central portion protrudes forward, the rear space of the central portion is wide, and the transmission case 43 and the fertilizing hose 122, ... can be arranged without difficulty. Thereby, the rear wheel 11 and the seedling planting section 4
And the overall length can be shortened.

A belt-type vertical seedling feeding device 66 is provided below the seedling mounting surface. This seedling vertical feeder 66
Is an endless seedling feed belt having small projections formed on the outer periphery thereof stretched over a driving roller and a driven roller.
When 8 reaches the end of the left and right strokes and all the seedlings of one horizontal row located at the lower end of the seedling mounting portion are taken out, the seedling feed belt is operated by a predetermined amount by the seedling vertical feed drive mechanism described later. ,
Transfer the seedlings downward.

As shown in FIG. 7, both ends of the support rail 52 can be folded when the seedling transplanter is stored. That is, the support rail end 52b is inserted into the projection 70 formed on the support rail main body 52, and the connecting plate 71 is fixed to the both 52, 52b by the rotating collars 72, 72 and the bolts 73, 73. The collar insertion hole 71a on the support rail end side of the connecting plate is a long hole, so that the bolt 73 is loosened and the support rail end 5
2b is removed from the projection 70, and the support rail end 52b is folded forward as shown by a chain line in FIG.

Outside the support rail 52, a support rail guard 75 for preventing the left and right ends of the support rail 52 from being damaged by contact with an obstacle is attached. The support rail guard 75 has an attachment pipe 75a provided inward from the middle portion slidably fitted to both ends of the left and right connection pipe 45, and a front end provided on the outer surface of the seedling support frame 48. It is fitted and attached to the guard receiver 76. When the seedling transplanter is stored, the support rail guard 75 is pulled out and removed from the guard receiver 76, and in this state, the support rail guard 75 is rotated around the mounting pipe 75a.
The support rail guard 75 is pushed inward to reduce the lateral width of the body.

The seedling planting device 39 includes a rotary case 81 integrally mounted on a left-right rotary case shaft 80 rotatably supported by a bent portion of the front and rear frames 44, and a pair of rotary cases 81 supported at both ends of the rotary case. Planter shaft 82,
Planting tools 83, 83 are attached to 82, respectively. Each planting tool 83 is provided with a seedling separation claw 84 and a seedling pushing claw 85. When the rotary case shaft 80 is driven and rotated, the pair of planting tools 83, 83 move in the same trajectory on which the seedling separation claw 84 draws the tip trajectory P while maintaining a half-period interval therebetween in a constant posture. I do. When the seedling separation claw 84 passes through the seedling removal port 55, one seedling of the seedling mounting table 38 is separated and taken out. When the seedling separating claws 84 enter the topsoil portion of the field, the seedling pushing claws 85 protrude, and push out the soil portion of the seedlings held by the seedling separating claws 84 downward to plant the seedlings in the field.

The planting tool 83 is attached to the planting tool shaft 82 with a cotter pin 83a so as to rotate integrally with the mounting tool 83, and the main body case 83c is attached to the mounting metal with the mounting bolt 83.
d and 83d. Mounting bolt 83d, 83d
By changing the position of the planting tool 83 by changing the mounting position of the planting tool 83, the amount of seedlings collected by the planting tool 83 can be adjusted.

Each of the floats 40, 41, 41 is attached to a float support shaft 90 which is rotatably supported below the front ends of the front and rear frames 44,.
Are supported via 1,. Center float 40
Of the hydraulic valve 36 with respect to the horizontal plane is detected by the ground height detecting mechanism 92, and based on the detection result,
Is driven to move up and down the seedling planting section 4 to maintain the planting depth of the seedlings constant. When the float support shaft 90 is rotated by a planting depth adjusting lever (not shown), the vertical position of each float changes, and the reference planting depth of the seedling changes.

The power from the traveling vehicle body 2 is transmitted to the planting transmission shaft 93.
Planting intermediate shaft 9 penetrating the transmission case 43 back and forth through the
4 is transmitted to the front end. A part of the power transmitted to the planting intermediate shaft 94 is transmitted to the transmission case via a transverse feed transmission mechanism provided in the transmission case 43 and comprising a combination of a plurality of gears and a set of bevel gears G1 and G2. The power is transmitted to a left-right lead cam shaft 95 provided on the left side of the reference numeral 43. The lead cam shaft 95 is a shaft having a spiral groove 95a formed on the outer periphery, and a lead metal 97 fixedly attached at both left and right ends to a lateral feed drive rod 96 connected to the seedling mounting table 38.
Are engaged with the groove 95a. Therefore, when the lead cam shaft 95 rotates, the lead metal 87 moves in the axial direction along the groove 95a, and the seedling mounting table 38 is reciprocated right and left. Thereby, the seedlings located at the lower end of the seedling mounting table 38 are sequentially supplied to the seedling outlets 55,. By changing the lateral movement speed of the seedling table 38 by changing the speed of the lateral feed mechanism, the number of seedlings to be taken per stroke can be switched stepwise.

On the right side of the transmission case 43, a seedling vertical feed shaft 98 which rotates integrally with the lead cam shaft 95 is provided, and the seedling vertical feed arms 99, 99 are attached to this.
When the seedling mounting table 38 moves to the end of the left and right strokes, the constantly rotating seedling vertical feed arm 99 engages with an operating arm (not shown) attached to the drive roller shaft 63a of the seedling vertical feeder 66. Then, the operation arm is rotated by a predetermined angle.
As a result, the seedling feed belt of the seedling vertical feeding device 66 operates by a predetermined amount, and transfers the seedlings downward by the amount of the seedlings collected.

The right end of the lead cam shaft 95 is rotatably supported by a roller bearing 104 disposed on the outer periphery of the bevel gear G2, and the left end is attached to the front end of the left and right case 44 by bolts and nuts. The roller case 104 is rotatably supported by a roller bearing 104 in the bearing case 105, and is entirely exposed from the transmission case 43. And the lead cam shaft 95
Between the lead metal 97 and the transmission case 65,
And a pair of bellows-like covers 106, 106 provided between the lead metal 97 and the bearing case 105. As described above, since the lead cam shaft 95 is provided outside the transmission case 43, by removing the bearing case 105 from the front and rear cases 46 on the left side, the lead cam shaft 95 is removed.
Can be removed from the transmission case 43, and maintenance such as phase adjustment of the bevel gears G1 and G2 can be easily performed.

The rear end of the planting intermediate shaft 94 is connected to a planting input shaft 111 via a universal joint 110 located immediately below the seedling mounting table 40. Planting input shaft 11
Reference numeral 1 denotes a rear end supported by the input case 46, and an input from the planting intermediate shaft 94 is transmitted to the rear end of the front and rear frames 44, 44, 44 via bevel gears G3, G4 in the input case. The driving force is transmitted to the horizontal planting drive shaft 112 supported by the input case 46. The planting intermediate shaft 94 is almost horizontal,
The planting input shaft 111 is inclined backward and upward. For this reason,
The input path to the planting drive shaft 112 passes under the seedling mounting table 38 and is bent so as to project downward just below the seedling mounting table 38. By arranging the input path in this way, the lower end position of the seedling mounting table 38 can be made as low as possible, and the seedling transfer distance from the seedling outlet 55 to the top soil surface of the field is shortened, so that the seedling placement posture is reduced. It is possible to stabilize.

A sprocket 114 attached to the planting drive shaft 112 and a chain 116 hung on a sprocket 115 attached to the rotary case shaft 80 are built in the rear portion of each front and rear frame 44. Is transmitted to the rotary case shaft 80 to drive the seedling planting device 39. A ridge clutch 117 is provided at a connecting portion between the sprocket 115 and the rotary case shaft 80 to be driven in and out by a wire operation. Therefore, the on / off of seedling planting can be arbitrarily switched in units of two.

The front and rear frame 44 is configured by joining left and right divided members 44a and 44b. Since the front part of the front and rear frame 44 is constituted by the left member 44a alone, only the right member 44b can be easily removed, and the inside of the front and rear frame 44 can be easily maintained. The attachment portion of the ridge clutch operation wire 118 is formed on the right member 44b.

The planting drive shaft 112 which is a transmission unit of the planting device.
And the chains 116,... Are arranged on the rear side of the seedling mounting table 38. Then, a chain 116 is provided in the front and rear frames 44 which are the supporting frames. With this configuration, the front and rear frames 44 can be effectively used as a part of the seedling plant transmission unit, and the weight of the seedling plant can be reduced.

The attachment bolts 83d, 83d, which are the seedling collecting amount adjusting tools of the seedling planting device, are connected to the seedling extracting port 55 by the planting tool 83.
Is provided so as not to overlap with the front and rear frames 44 which are frames that support the seedling plant transmission unit when viewed from the side. Therefore, the amount of seedlings can be easily adjusted.

The position of the planting drive shaft 112 is
a is located below the extension 119 of the bottom surface of FIG. Therefore, the leaves of the seedling supported by the seedling receiving frame 52 a do not interfere with the planting drive shaft 112.

The fertilizer applicator 5 is provided with a fertilizer storage unit 120 and a fertilizer feeding unit 121 on the rear upper side of the traveling vehicle body 2 and transfers the granular fertilizer stored in the fertilizer storage unit 120 to the fertilizer feeding unit 1.
, And the fertilizer is transferred through the fertilizing hoses 122,... To the fertilizing guides 123,... Attached to the floats 40, 41, 41, and the groove forming bodies 124,. Thus, the fertilizer is dropped into the fertilizing groove formed near the side of the seedling attachment strip.

The lower part of the fertilizer hose 122 connected to the fertilizer guide 123 has a lead cam shaft 95, a left and right connecting pipe 4
5 and the lower part of the seedling collection amount adjusting pipe 60 are substantially parallel to a straight line connecting them. This allows the fertilizing hoses 122,... To approach the seedling mounting table 38, so that the seedling placement part 4 can be reduced in size and weight.

[0035]

According to the first aspect of the present invention, the position of the seedling mounting table can be lowered, so that the seedling transfer distance from the seedling mounting table to the top soil surface of the field can be shortened, and the planting accuracy of the seedlings can be stabilized. Became.

According to the second aspect of the present invention, when the seedling planting apparatus is in a state of taking out seedlings from the seedling mounting table, a seedling collecting amount adjusting tool of the seedling planting apparatus and a frame supporting the seedling planting apparatus transmission unit. Since the two do not overlap in the side view, the amount of seedlings collected by the seedling planting apparatus can be easily adjusted.

Further, according to the third invention, the frame supporting the transmission portion of the seedling planting device can be effectively used as a part of the transmission portion of the seedling planting device, and the weight of the seedling planting portion can be reduced.

[Brief description of the drawings]

FIG. 1 is a side view of a seedling transplanter.

FIG. 2 is a plan view of the seedling transplanter.

FIG. 3 is a development view in which a part of a seedling plant is omitted.

FIG. 4 is a side view of a main part of the seedling planting section.

FIG. 5 is a plan view 1 of a main part of a seedling planting part, a part of which is shown in a cross section.

FIG. 6 is a plan view 2 of a main part of a seedling planting part, a part of which is shown in a cross section.

FIG. 7 is an exploded view of a support rail folded portion.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 seedling transplanter 2 traveling vehicle body 3 elevating link device 4 seedling planting part 5 fertilizer application device 38 seedling mounting table 39 seedling planting device 43 transmission case 44 front and rear frames 52 support rail 52a seedling receiving frame 83d mounting bolt (seedling removal amount adjusting tool) 95 Lead cam shaft 94 Planting intermediate shaft (input path) 111 Planting input shaft (input path) 112 Planting drive shaft (seedling planting device transmission unit) 116 Chain (seedling planting device transmission unit) 122 Fertilizing hose

Claims (3)

[Claims] 1. A seedling transplanter that transmits to a seedling planting device of each line via a seedling planting device transmission unit disposed on the rear side of a seedling mounting table, wherein an input path to the seedling planting device transmission unit is determined. A seedling transplanter, wherein the seedling transplanter is disposed at a position passing below the seedling mounting table and is bent so as to project downward just below the seedling mounting table. 2. A seedling transplanter that transmits to a seedling planting device of each strip via a seedling planting device transmitting portion disposed on the rear side of a seedling stage, wherein the seedling planting device moves the seedling stage from the seedling stage. A seedling transplanter, wherein the seedling picking amount adjusting tool of the seedling planting device and the frame supporting the seedling planting device transmission portion are arranged so as not to be overlapped in a side view when the seedling planting device is taken out. . 3. A seedling transplanter that transmits to a seedling planting device of each line via a seedling planting device transmitting portion disposed on the rear side of a seedling mounting table, wherein the seedling planting device transmitting portion has a frame. A seedling transplanter characterized in that a part of a seedling plant transmission unit is provided in the plant.