JP2011050287A - Seedling transplanter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compact seedling transplanter equipped with a seedling planting device capable of narrowly setting a space between planting rows. <P>SOLUTION: This seedling transplanter is characterized by having an output shaft 9 from a planting transmission case 2, 43, planting row driving arms 36 rotated by the rotation of the output shaft 9, planting row seedling-planting tools 59 for planting seedlings by the rotation of the planting row driving arms 36, and swinging arms 108 connected to the planting transmission case 2, 43 and the seedling-planting tools 59, in a seedling-planting device 50, and disposing balance weight portions 36a projected on the inside from the right and left end portions of the planting transmission case 2, 43 in the forward travelling direction of a travel vehicle body 56 in an end portion on the side opposite to the planting row seedling-planting tool 59-connected side 36b of each planting row driving arm 36 at a place not contacting with the right and left end portions of the planting transmission case 2, 43 on the rotation driving of the driving arms 36 in order to balance to the seedling-planting tools 59. Thereby, an inter-planting row space which is a space between the planting row seedling-planting tools 59 can narrowly be set. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a seedling transplanting machine in which a seedling planting device is connected to a traveling vehicle body.

  Conventionally, a seedling platform that supplies a plurality of seedlings on the left and right corresponding to the seedling mounting section corresponding to the seedling mounting section by placing the seedlings on the seedling mounting sections provided on the left and right and moving left and right, Taking seedlings at the exit and planting them Seedling planting units equipped with a plurality of seedling planting devices provided on the left and right, a powder storage unit for storing fertilizer and chemicals that become powder particles, and powder particles in the powder storage unit Multi-row planting type rice planting that becomes a seedling transplanting machine provided with a powder body discharge device equipped with a feeding unit that feeds the body by a predetermined amount and a float etc. that is grounded while sliding on the seedling planting surface The machine is known.

The seedling planting device in the seedling planting part of such a riding type rice transplanter operates with a long closed loop trajectory where the planting claw at the tip of the seedling planting tool is vertically cut and cuts one seedling. It is planted in soil, seedlings are inserted and transplanted.
Since the planting claws of the seedling planting tool are easily attached with mud or the like as described above and are subjected to an impact when they are grounded, maintenance inspection is required. And in order to raise the work efficiency of maintenance inspection, in the following patent document 1, a planting case (which is a seedling planting tool) is easily made from a seedling planting gear box (which is a planting transmission device) by a pin. A configuration that can be removed is disclosed.

JP 10-155323 A

With the configuration described in Patent Document 1, maintenance and inspection work for the seedling planting tool is facilitated.
On the other hand, in recent years, a more compact seedling transplanter has been demanded from the viewpoint of installation space and economy. And the thing which can set the planting strip by a seedling planting apparatus narrower than before is desired.

  However, in the seedling planting device described in Patent Document 1, the lateral width of the machine body (the crank part for rotating the seedling planting tool and the seedling planting tool, the planting transmission device to the seedling planting tool, etc.) Even if the maintenance of the seedling planting tool is good, the spacing between the planting strips cannot be set narrow, and the request for downsizing the seedling transplanter cannot be met.

  Then, the subject of this invention is providing the compact seedling transplanting machine provided with the seedling planting apparatus which can set the space between planting narrowly.

The said subject is achieved by the following structure.
That is, the invention according to claim 1 includes a traveling vehicle body (56), a drive source (E) provided on the traveling vehicle body (56), and a seedling platform (6) provided behind the traveling vehicle body (56). ), A seedling planting device (50) provided in association with each planting line for planting seedlings on the seedling mounting table (6), and a seedling planting device using power from the drive source (E) In the seedling transplanting machine for multi-row planting provided with a case (2, 43) containing a planting transmission section provided for each seedling planting device (50) for transmission to (50), the seedling planting The device (50) has a longitudinal direction in the left-right direction toward the advancing direction of the traveling vehicle body (56), and protrudes on both sides in the left-right direction of the planting transmission case (2, 43). 2 and 43) is fixedly connected to both ends of the output shaft (9) rotated by the power from the output shaft (9) and the output shaft (9). A drive arm (36) of each planting strip that is driven and rotated by rotation of the shaft (9), and an end of each planting transmission case (2, 43) side behind the mounting portion of the output shaft (9) A swing arm (108) that is connected and swings in the front-rear direction with the other end as a fulcrum, and each planting transmission case (2, 43) in the forward direction of the traveling vehicle body (56). The front part is connected to the end part (36b) of the drive arm (36) of each planting strip, and the rear part is connected to the swing side end part of the swing arm (108). A loop having a long front end in the vertical direction in a side view toward the forward direction of the traveling vehicle body (56) while the rocking arm (108) is rocked by the driving rotation of the driving arm (36) of each planting strip And a seedling planting tool (59) for each planting line for planting seedlings in the shape of an operating locus, The vehicle (36) is balanced with the seedling planting tool (59) at the end opposite to the connection side end (36b) with the seedling planting tool (59), and the traveling vehicle body (56). Projecting inwardly from the left and right ends of the planting transmission case (2, 43) toward the forward direction of the shaft, and does not contact the left and right ends of the planting transmission case (2, 43) when the drive arm (36) is driven to rotate. It is a seedling transplanting machine characterized in that a balance weight part (36a) is provided at a position.

  According to a second aspect of the present invention, the seedling planting tool (59) is provided on the outer side in the left-right direction of the drive arm (36) in the forward direction of the traveling vehicle body (56), and the swing arm (108) The lateral position of the traveling vehicle body (56) in the forward direction is substantially the same as that of the drive arm (36) or outside of the drive arm (36) in the lateral direction, and the seedling planting tool (59) A connecting portion (110) that is provided on the inner side in the left-right direction and connects the swing arm (108) and the seedling planting tool (59) is formed toward the forward direction of the traveling vehicle body (56). ) On the left and right inner sides of the balance weight portion (36a) of the drive arm (36), on the surface facing the connecting portion (110), on the left and right inner sides in the forward direction of the traveling vehicle body (56), When the drive arm (36) is driven to rotate, A seedling transplantation machine according to claim 1, characterized in that a recess so as not to contact forming portion and (110) (36aa).

  According to the seedling transplanting machine of claim 1, the balance weight part (36a) of the drive arm (36) protrudes inward from the left and right ends of the planting device transmission case (2, 43), and the drive arm (36 ) Is driven at a position where it does not contact the left and right ends of the planting device transmission case (2, 43), so that the planting tool (59) operates without grounding the balance weight (36a). Securing the size necessary for balancing with the planting tool (59) so as to reduce the vibration caused by the plant, and spacing between the seedling planting tools (59) of each planting line provided in the left-right direction It is possible to narrow the spacing between the planting strips.

Further, according to the seedling transplanting machine according to claim 2, in addition to the effect of the invention according to claim 1, the driving provided at both ends of the output shaft (9) of the planting transmission case (2, 43). The swing arm (108) is provided in a position substantially the same as the arm (36) in the left-right direction or on the outer side in the left-right direction with respect to the drive arm (36) and on the inner side in the left-right direction of the seedling planting tool (59). The swing arm (108) can be arranged at a position closer to the inside in the left-right direction, the seedling planting device (50) can be made compact, and the spacing between the planting strips can be set efficiently.
Further, a connecting part (110) for connecting the swing arm (108) and the seedling planting tool (59) is provided on the left and right inner sides of the seedling planting tool (59), and the balance weight part (36a) of the drive arm (36) is provided. ) On the surface facing the connecting portion (110) of the left and right inner sides and provided with a recess (36aa) so as not to contact the connecting portion (110) when the driving arm (36) is driven to rotate. Even if (36) is rotationally driven, it does not interfere with the connecting portion (110) between the swing arm (108) and the seedling planting tool (59).

It is a side view of the seedling transplanter (six-row planting) of one Embodiment of this invention. It is a top view of the seedling transplanting machine of FIG. It is the figure which showed the transmission mechanism of the seedling planting part of the rice transplanter of FIG.1 and FIG.2. It is the figure which showed the connection part of the hook clutch of the rice transplanter of FIG. 1, and the cable for the action | operation. It is the figure which showed the connection part of the seedling feed belt of the rice transplanter of FIG. 1, and the cable for the action | operation. It is a top view of the transmission apparatus of the seedling planting part of the rice transplanter of FIG. FIG. 7A is an enlarged plan view of the vicinity of the seedling planting device of the transmission device portion of FIG. 6, and FIG. 7B is a side view of FIG. 7A. It is a top view (four row planting) of a seedling tank carrying a seedling loading part with a wide inter-strip distance. It is a top view (six-row planting) of a seedling tank when the distance between the stripes of a seedling loading part is made narrow. It is sectional drawing of the seedling tank of FIG. It is a top view of the seedling tank at the time of changing the width of each seedling mounting part of the seedling transplanting machine shown in FIG. It is explanatory drawing in the case of using the seedling box for seedling mounting parts with a wide inter-strip distance for a seedling mounting part with a short inter-strip distance. It is a top view of the seedling tank of the seedling transplanter of one embodiment of the present invention. It is explanatory drawing (a top view of a seedling tank) when a seedling planting tool scrapes off a seedling from the seedling mounting part of a seedling tank. It is explanatory drawing when a seedling planting tool scrapes off a seedling from the seedling mounting part of a seedling tank (figure of seedling planting tool vicinity).

An embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows a left side view of a 6-row transplanter as a seedling transplanter according to an embodiment of the present invention, and FIG. 2 shows a plan view of the rice transplanter in FIG. Moreover, in FIG. 3, the transmission mechanism of the seedling planting part N of the rice transplanter of FIG. 1 is shown.
In the present specification, the left and right directions in the forward direction of the rice transplanter are respectively left and right, the forward direction is forward, and the backward direction is rear.

  The traveling vehicle body 56 is a four-wheel drive vehicle including a pair of left and right front wheels 13 and 13 and rear wheels 15 and 15 which are drive wheels, and a transmission case 22 is disposed at the front of the fuselage. A front wheel final case 80 is provided on the left and right sides of the front wheel 13, and the front wheels 13 and 13 are attached to the front wheel axle 14 that protrudes outward from a front wheel support portion that can change the steering direction of the front wheel final case 80. The left and right rear wheel gear cases 81 rotate up and down around the rotation fulcrum axis S, whereby the left and right rear wheels 15 move up and down to follow the field. Rear wheels 15 and 15 are attached to a rear wheel axle 16 projecting outward from the rear wheel gear case 81.

A driver's seat 19 is mounted on the mid cover 18 on the step floor 17 of the vehicle body 56, and an engine E, a fuel tank 21, and the like as drive sources are provided below the seat cover 18. Moreover, the boarding / alighting step 20 at the time of an operator boarding / alighting is provided in the lower left and right sides of the step floor 17.
The rotational power of the engine E is transmitted from the engine output pulley 90 (FIG. 1) to the input shaft of a continuously variable hydrostatic transmission (HST) 93 (FIG. 1) via the belt 91 (FIG. 1). The hydraulic pump is driven from the shaft, and further transmitted from the output shaft of the hydrostatic transmission to the mission in the mission case 22. The rotational power transmitted to the mission in the mission case 22 is shifted by the transmission in the case 22 and then separated into traveling power and external power to be extracted. The traveling power is transmitted from the front wheel final case 80 to the front wheels 13 and 13 and from the rear wheel gear case 81 to the rear wheels 15 and 15 and also to the planting transmission shaft 23.

On the left and right sides of the steering post 24 that stands up from the step floor 17 at the front of the aircraft, the spare seedling platforms 25 and 25 on which the seedlings for replenishment are placed are stored at the position where they protrude sideways from the aircraft. It is provided to be able to rotate at the position.
Further, a lift link 57 in the form of a parallel link is connected to the rear end portion of the vehicle body 56 so as to be rotatable up and down, and includes a single upper link 57a and a pair of left and right lower links 57b and 57b. These lift links 57 are rotatably attached to a rear-view gate-shaped rear frame 26 whose base side is erected at the rear end of the vehicle body 56. The upper link 57a and the lower links 57b and 57b rotate up and down by the expansion and contraction of the elevating cylinder 27 between the vehicle body 56 and the lower link 57b and the upper link 57a, and the seedling planting portion N remains in a substantially constant posture. Go up and down.

  The hitch link 28 at the rear end of the lift link 57 is provided with a rolling shaft 55 (FIG. 6) having a longitudinal direction in the front-rear direction (located in the R portion in FIG. 1), and can be freely rolled in the left-right direction. There are springs 95 (FIG. 1) on both the left and right sides of the connected rolling shaft 55, and the springs are stretched and contracted to maintain a horizontal state. The spring 95 is connected to the vehicle body 56 side and a support frame 30 described later. Further, the rolling shaft 55 is located at the center in the left-right direction of the vehicle body 56.

  The seedling planting portion N has a six-row planting structure, and the support frame 30 (the support frame 30 is supported from the traveling vehicle body 56) that supports the planting transmission portion 1 (FIG. 3) and the rolling shaft 55 of the seedling planting portion N. It can also be said that it is supported via the rolling shaft 55). A seedling mounting part 6e and a seedling mounting part 6e that are placed on the seedlings and reciprocally move left and right to feed the seedlings to the seedling outlet 6b of each strip. A seedling planting device 50 for planting seedlings supplied to the seedling tank (seedling stage) 6 and the seedling outlet 6b,... In the field,... A pair of drawing markers and the like are provided.

  Each seedling mounting portion 6e accommodates and feeds out a rectangular mat seedling, and is configured to have a rearward downward slope. A seedling feeding belt 6c is provided at the bottom of the lower end, and this seedling feeding belt 6c is driven intermittently. The seedlings are fed out every certain amount. Specifically, the seedling tank 6 has mat seedlings placed on a plurality of seedling mounting portions 6e provided on the left and right sides, and reciprocates left and right, so that the seedling receiving plate (front plate) 6a in each row is divided into one stock. When the seedlings are supplied to the seedling outlet 6b and all the seedlings in the horizontal row are supplied to the seedling outlet 6b, the seedlings are transferred downward by the seedling feeding belt 6c.

  And the seedling planting tool 59 of the seedling planting apparatus 50 operates by drawing a closed loop locus whose tip (front end) is long in the vertical direction, and cuts out one stock of seedlings and transplants them into the soil. Moreover, the seedling mounting part 6e is divided for every mat seedling by the partition protrusion part 6d. The seedling feeding belt 6c transports the seedling in the front-rear direction or the vertical direction toward the forward direction of the vehicle body 56. In the present embodiment, the seedling feeding belt 6 c transfers seedlings to the lower rear part in the forward direction of the vehicle body 56.

  In the lower part of the seedling planting part N, a center float 51 is provided in the center, and side floats 52 are provided on both the left and right sides thereof, and the aircraft is placed with the center float 51 and the side floats 52 in contact with the mud surface of the field. If it advances, the center float 51 and the side float 52 will slide while leveling the muddy surface, and seedlings will be planted by the seedling planting devices 50,. The center float 51 and the side float 52 support the rear part so as to be rotatable around the float shaft 40 (FIG. 1) at the rear end of the depth frame 115, and the depth frame 115 rotates up and down with respect to the support frame 30. In this configuration, the height of the float shaft 40 can be adjusted.

Each float (center float 51, side float 52) moves up and down on the front end side according to the unevenness of the field topsoil surface, and the vertical movement of the front part of the center float 51 is the angle sensor 53 (FIG. 1) during planting work. By switching the hydraulic valve 29 (FIG. 1) that controls the lifting cylinder 27 in accordance with the detection result, the seedling planting part N is raised and lowered, so that the seedling planting depth is always kept constant.
The planting transmission part (planting apparatus transmission case) 1 of the seedling planting device 50 has a wide shape in the left-right direction, and the rear part is branched to the left and right, along each center float 51 and the upper part of the side float 52. It protrudes rearward and forms a branch part in a fork-like form.
The power transmitted to the seedling planting portion N by the planting transmission shaft 23 is transmitted into the planting transmission portion 1 provided in the seedling planting portion N, and the seedling planting device for each strip from the planting transmission portion 1 is transmitted. 50 and the seedling feed belt 6c. A branching transmission part 41 that branches power in the planting transmission part 1 and transmits it to the seedling planting device 50 in units of every two strips is provided, and a planting part that turns on and off the transmission of the branching transmission part 41 A clutch 61 is provided, and power is transmitted from the planting partial clutch 61 to the branch transmission unit 41 by a chain 178 (FIG. 3). It can be stopped every time.

The planting partial clutch 61 that switches the operation and stop of the seedling planting device 50 in two adjacent units is often operated to “cut” at the time of work at the shoreline. "is called. An interlocking mechanism that stops the seedling feeding belt 6c of the planting strip corresponding to the operation of the planting partial clutch 61 is also provided. Reed clutch levers 62 (FIG. 1) for operating the planting partial clutch 61 are provided on the rear side of the driver's seat 19 and in front of the upper portion of the seedling tank 6.
Further, as shown in FIG. 3, the seedling feed driving cam 170 is always rotated by driving from the power in the planting transmission section 1, and the seedling feeding drive cam 170 is driven at the left and right moving ends of the seedling placement section 6e. , 172, the rotating shaft 174 integrated with the seedling feeding arm 172 rotates, and the rotation of 174 also drives the left and right seedling feeding partial clutch 63 via the left and right links 176, for seedling feeding. The seedling feed driving roller 220 is driven from the partial clutch 63 to drive the seedling feeding belt 6c. 4 shows a connection portion between the planting partial clutch 61 and the planting cable 72 for operation thereof, and FIG. 5 shows a connection portion between the seedling feeding belt 6c and the seedling feeding cable 73 for operation thereof. ing.

  The planting partial clutch 61 provided in the planting transmission unit 1 includes a drive-side clutch body 206 fixed to the transmission shaft 50a of the seedling planting device 50, and a clutch tooth 206a of the clutch body 206 that is detachable. A passive clutch body 207 having 207a is provided, and the passive clutch body 207 is always urged toward the transmission shaft 50a by a spring 209, a sprocket 210, and a washer 211. It is in an operating state (a state where the planting cable 72 is pulled).

  A clutch pin groove 207b is provided on the side surface of the passive clutch body 207, and a hook clutch pin 213 connected to the tip of the planting cable 72 is detachably provided in the groove.畦 Clutch pin 213 is provided in the hole so as to pass through the hole in the wall surface of planting transmission unit 1, and can be protruded from the wall surface of planting transmission unit 1 to the inside of planting transmission unit 1 by spring 214. . Therefore, when the planting cable 72 is pulled, the hook clutch pin 213 is moved in the direction of being pulled out of the clutch pin groove 207b of the passive clutch body 207. When the hook pin 213 is pulled out in the clutch pin groove 207b of the passive clutch body 207 by a predetermined pulling amount, the planting partial clutch 61 is "on" by the urging force of the spring 214. When the planting partial clutch 61 does not plant seedlings (planting partial clutch 61: “OFF”), the planting partial clutch 61 is a fixed position stop clutch. Becomes “ON”.

When the planting partial clutch 61 is disengaged, the planting cable 72 is loosened, so that the heel clutch pin 213 enters the clutch pin groove 207b by the urging of the compression spring 214, and in this state, the passive side clutch body As the 207 rotates, the passive clutch body 207 gradually moves to the compression spring 209 side against the compression spring 209 by the guide of the clutch pin groove 207b, and the passive clutch body 207 has a predetermined rotational position (clutch). The clutch teeth 206a and 207a are disengaged for the first time in a state where the saddle clutch pin 213 is positioned at the rotational direction end of the pin groove 207b, and the passive clutch body 207 stops at a fixed position. Note that the compression spring 214 is not contracted by the urging force of the compression spring 209 and the hook clutch pin 213 is not pushed back to the planting cable 72 side.
When the planting partial clutch 61 is “ON”, the chain 216 locked to the sprocket 210 is driven, and the seedling planting device 50 is activated.

  FIG. 5 shows the configuration of the operating mechanism of the seedling feeding belt 6c. The seedling feeding cable 73 is connected to one end of an L-shaped shifter arm 219, and the other end of the shifter arm 219 is connected to the driving side clutch body 221 of the seedling feeding driving roller 220. The drive-side clutch body 221 is switched to “ON” and “OFF” in accordance with the movement of the “ON” and “OFF” sides of the valve, and constitutes a seedling feeding partial clutch 63. The drive side clutch body 221 can be engaged with and disengaged from the seedling feed roller 220 via the clutch teeth 220a and 221a. The seedling feed drive roller 220 is adjacent to the seedling feed drive 220 on the side opposite to the drive side clutch body 221. It is connected via a clutch tooth that is always meshed with the roller 220. A seedling feed driven roller 223 is provided at a position parallel to the seedling feed drive roller 220, and a seedling feed belt 6 c is wound between the drive roller 220 and the driven roller 223.

  By operating the heel clutch lever 62, the passive side clutch body 207 of the planting partial clutch 61 can be switched between operation and non-operation, and the drive side clutch body 221 of the seedling feeding belt 6c is switched between operation and non-operation. Can do. That is, the planting cable 72 for operating the cocoon clutch can be moved to the cocoon clutch operating side, and at the same time, the seedling feeding cable 73 for activating the seedling feeding belt can be moved to the seedling feeding belt operating side. The planting cable 72 can be moved to the heel clutch non-operating side, and at the same time, the seedling feeding cable 73 for operating the seedling feeding belt can be moved to the seedling feeding belt non-operating side. As described above, the seedling planting device 50 and the seedling feeding belt 6c can be operated simultaneously by operating the hook clutch levers 62, and can be deactivated simultaneously.

In FIG. 6, the top view of the planting transmission part 1 of the seedling planting part N of the seedling transplanting machine of FIG. 1 is shown. FIG. 7A shows an enlarged view of the vicinity of the seedling planting device 50 of the transmission device portion of FIG. 6, and FIG. 7B shows a side view of FIG.
The planting transmission unit 1 includes a spacer case 44 having a longitudinal direction in the left-right direction, and a center case 2 at the center branching from the spacer case 44 to the seedling planting tool 59 of each strip of each seedling planting device 50. The side case 43 is composed of side cases 43 on both sides. The side case 43 is connected to the left and right side portions of the center case 2 via a spacer case 44 in the form of a tube to form a fork-like shape as an integral structure. A rolling shaft 55 is provided at substantially the same position of the center case 2 portion corresponding to the handle portion of the fork-like shape, and an input shaft 3 is provided at a right side position to be connected to the planting transmission shaft 23.

Drive arms 36 are provided on the left and right sides of the planting output shaft 9 mounted on the rear ends of the center case 2 and the side case 43.
A seedling planting tool 59 supported by a support frame (support member) 46 connected to the planting output shaft 9 is provided at the end of each drive arm 36, and the hanging posture is maintained by the rotation of the drive arm 36. Then, while being driven up and down, the seedling separated and held at the upper seedling outlet 6b is planted on the soil surface, and the center case 2 and the side case 43 are in a double-row planting form, and are configured as a six-row planting as a whole. .

  Between the center case 2 and the front part of the side case 43, the transmission shaft 4 is mounted in the lateral direction (left and right direction) through the spacer case 44, and from this transmission shaft 4 to the branch transmission portion 41, the center case 2, The planting output shaft 9 is transmitted and rotated through a chain 178 which is a vertical transmission mechanism in the side case 43. Further, each branch transmission portion 41 is provided with a planting partial clutch 61. By turning this planting partial clutch 61 on and off, transmission to the center case 2 and the side case 43 is turned on and off.

Since the planting partial clutch 61 (FIG. 1) is provided for each center case 2 and each side case 43, the planting partial clutch 61 over a number of areas where the seedling planting operation is to be stopped by the dredging operation is provided.切 り The clutch lever 62 can be turned off. At this time, each planting partial clutch 61 is configured to turn on and off the transmission of the bifurcated branch transmission portion 41, and therefore, the planting partial clutch 61 is operated for each double planting.
Further, each branch transmission portion 41 is provided with a safety clutch 8, and the safety clutch 8 is a clutch that transmits power between the transmission shaft 4 and the chain sprocket 67 on the transmission shaft 4 of the branch transmission portion 41. A claw is provided and pressed by the spring 68 toward the chain sprocket 67 side. The chain sprocket 67 is rotatable around the transmission shaft 4, and the seedling planting overload acts on the chain sprocket 67 side, whereby the safety clutch 8 part is disengaged.

  A cam shaft transmission case 12 is formed on the right side of the chain 178 and the rolling shaft 55 at the front portion of the center case 2 at the center, and is provided along the lateral direction below the bottom of the seedling mounting portion 6e. The right end portion of the lead cam shaft 10 is supported. In the camshaft transmission case 12, a camshaft transmission mechanism 11 comprising a chain transmission between the right end of the lead camshaft 10 and the transmission shaft 4 is provided, and a lateral transmission comprising the camshaft transmission mechanism 11 and the camshaft transmission case 12 is provided. The power is transmitted from the transmission shaft 4 to the lead cam shaft 10 by the portion.

  This lead cam shaft 10 is formed with a reciprocating spiral cam groove 47 on its peripheral surface, and a lead cam 48 protruding on the bottom surface of the bottom of the seedling mounting portion 6e supported so as to be movable left and right is fitted to rotate the lead cam shaft 10. Thus, the seedling mounting portion 6e is reciprocated left and right across the tank width. A seedling feed driving cam 170 is provided at the tip of the lead cam shaft 10, and the seedling feeding arm 172 (FIG. 3) is driven by the rotation of the seedling feeding drive cam 170, so that the seedling placement portion 6 e is at the left and right lateral ends. Each time it moves, the seedling feeding belt 6c is driven by a certain amount, and the mat seedling of the seedling mounting portion 6e is transferred to the seedling receiving plate 6a side.

  At the time of seedling planting, the seedling planting part N is in a state of being freely rollable around the rolling shaft 55, and when the soil surface, the cultivator, etc. are tilted to the left and right by the ground sliding of the center float 51 and the side float 52, this rolling shaft Rolling control is performed around 55, the sliding soil surface by each of the floats 51 and 52 is leveled so as to be as horizontal as possible, and the seedling planting depth is maintained to be uniform.

The transmission mechanism of the seedling planting part N will be described.
Power from the engine E is transmitted to the input shaft 3 through the planting transmission shaft 23 and the transmission shaft 4 rotates, and the center case 2 and the side case 43 portion planting partial clutch 61, the safety clutch 8, and the branch transmission. The seedling planting tool 59 operates through the part 41, the chain 178, and the like. Further, the lead cam shaft 10 rotates from the transmission shaft 4 through the cam shaft transmission mechanism 11 in the cam shaft transmission case 12, and the seedling mounting portion 6e reciprocates left and right, so that the seedlings are sequentially placed on the seedling outlet 6b. Supply. In addition, when the seedling placement part 6e reaches the left and right ends together with the seedling supply operation, the seedling feeding drive cam 170 drives the seedling feeding arm 172 (FIG. 3), and the seedling feeding belt 6c transports the seedling downward. . In this way, the mat-like seedlings housed in the seedling placing part 6e are fed to the seedling receiving plate 6a side, and each seedling planting tool that acts on the seedling outlet 6b of the seedling receiving plate 6a. 59, and is planted on the soil surface leveled by the center float 51 and the side floats 52.

The connection and operation mechanism of the seedling planting tool 59 of the seedling planting apparatus 50 will be described.
Power is transmitted from the branching transmission part 41 in the planting transmission part 1 to the planting output shaft 9 that protrudes from the left and right sides of the center case 2 and the side case 43 via the chain 178 and is planted. The shaft 9 rotates. The drive arms 36 of the respective strips are fixedly connected to both ends of the planting output shaft 9 that protrude from the center case 2 and the side case 43, and are driven and rotated in conjunction with the rotation of the planting output shaft 9. . A seedling planting tool 59 is rotatably connected to one end portion of the drive arm 36 (connection portion V in FIG. 7). The seedling planting tool 59 is moved up and down by the rotation of the drive arm 36, and the seedling separated and held at the seedling outlet 6b is scraped by the planting claw 59a at the tip (front end) and moved up and down in a side view. Seedlings are planted in a loop-like operation locus (a dashed line in FIG. 15C) that is long in the direction.

One end of the swing arm 108 is rotatably connected to the rear end portion of the seedling planting tool 59, and the other end of the swing arm 108 is attached to the rear portion of each center case 2 and side case 43. The rear end 46a is pivotally connected.
For example, when the planting output shaft 9 rotates in the direction of arrow A as shown in FIG. 7, the drive arm 36 fixedly connected to both ends of the planting output shaft 9 also rotates in the direction of arrow A with the planting output shaft 9 as a fulcrum. Move. The seedling planting tool 59 whose central portion is pivotally connected to the end of the drive arm 36 also rotates in the direction of arrow A with the planting output shaft 9 as a fulcrum while maintaining the hanging posture, and a planting claw 59a. Plant seedlings. The swing arm 108 connected to the rear end portion of the seedling planting tool 59 has an arrow in conjunction with the operation of the seedling planting tool 59 with the connection portion with the support frame 46 (the rear end portion 46a of the support frame 46) as a fulcrum. Swings in the B direction (front-rear direction).

  And the balance weight part 36a for balancing with the seedling planting tool 59 of each planting strip is provided in the end part 36a on the opposite side to the connection side end part 36b with the seedling planting tool 59 of the drive arm 36. Is provided. The balance weight portion 36a is provided at a position that protrudes inward from the left and right end portions of the center case 2 and the side case 43 and does not contact the left and right end portions of the center case 2 and the side case 43 when the drive arm 36 is driven to rotate. Yes.

  A connecting portion K (FIG. 7A) between the balance weight portion 36a of the drive arm 36 and the drive arm 36 of each center case 2 and side case 43 overlaps in the upward direction toward the forward direction of the traveling vehicle body 56. In position.

  When the drive arm 36 is rotationally driven, if the drive arm 36 and the center case 2 and the side case 43 are provided with a width in the left-right direction so as not to overlap at all in plan view, It becomes impossible to set the spacing between the planting strips (interstitch distance), which is the distance between the seedling planting tools 59 of the respective planting strips, from the current state.

  However, in this way, the balance weight portion 36a of the drive arm 36 partially overlaps with each center case 2 and the side case 43 by the planting operation of the seedling planting tool 59, but each center case 2 and side case The balance weight portion 36a is grounded by projecting inwardly from the left and right end portions (connecting portion K) of 43 and not contacting the left and right end portions of the center case 2 and the side case 43 when the drive arm 36 is driven to rotate. In such a state, the size necessary for balancing with the seedling planting tool 59 can be ensured so that vibration due to the operation of the seedling planting tool 59 can be reduced, and the spacing between the planting lines can be set narrow.

For example, the inter-strip distance can be shortened from 30 cm for four-row planting to 25 cm for six-row planting without major changes such as replacement of the drive arm 36. When shortening from 30 cm to 25 cm, a member (such as a length of a bolt (shaft)) of a connecting portion between the seedling planting tool 59 and the drive arm 36 or the swing arm 108 is changed. With this configuration, the seedling planting device 50, and thus the seedling transplanting machine, can be made compact.
Further, the swing arm 108 is preferably provided at a position in the left-right direction that is substantially the same as that of the drive arm 36 or outside the drive arm 36 in the left-right direction.

  A swing arm 108 is provided at substantially the same position as the drive arm 36 provided at both ends of the planting output shaft 9 or in the left-right direction outside the drive arm 36 and inside the seedling planting tool 59 in the left-right direction. By providing, the swing arm 108 can be disposed at a position closer to the inner side in the left-right direction, the seedling planting device 50 can be made compact, and the spacing between the planting strips can be set efficiently.

Furthermore, the interlocking mechanism of the seedling planting tool 59, the drive arm 36, and the swing arm 108 will be described in detail.
As described above, during the planting operation, the swing arm 108 swings in the front-rear direction (arrow B direction) with the rear end portion 46a of the support frame 46 as a fulcrum by the operation of the seedling planting tool 59. When the connection side end portion 36b of the drive arm 36 is forward and the balance weight portion 36a is positioned rearward (state in FIG. 7A), the connection portion 36b of the seedling planting tool 59 with the drive arm 36 is Since the swinging arm 108 is positioned in front of the planting output shaft 9, the swinging arm 108 is also positioned in front of the swinging fulcrum (support frame rear end 46a). On the other hand, when the balance weight part 36a of the drive arm 36 is forward and the connection side end part 36b is located rearward, the connection part 36b of the seedling planting tool 59 with the drive arm 36 is rearward with respect to the planting output shaft 9. Therefore, the swing arm 108 is also located on the rear side with respect to the swing support point 46a.

  Therefore, when the connection side end portion 36b of the drive arm 36 is forward and the balance weight portion 36a is positioned rearward (the state of FIG. 7A), the swing arm that is connected to the rear end portion of the seedling planting tool 59 108 is positioned on the front side of the swing fulcrum 46a, so that the swing arm 108 and the balance weight part 36a overlap in a side view, but the connection side end 36b of the drive arm 36 is rearward and the balance weight part 36a is positioned forward. In this case, since the swing arm 108 connected to the seedling planting tool 59 is located on the rear side of the swing support point 46a, the connection side end 36b of the drive arm 36 and the swing arm 108 do not overlap in a side view.

  As described above, when the connection side end 36b of the drive arm 36 is located forward and the balance weight 36a is located rearward due to the planting operation, the balance weight 36a and the swing arm 108 are in an overlapping position in a side view. When the connection side end portion 36b of the drive arm 36 is rearward and the balance weight portion 36a is positioned forward, the connection side end portion 36b of the drive arm 36 with the seedling planting tool 59 and the swing arm 108 are in an overlapping position. By providing the seedling planting tool 59, the drive arm 36, and the swing arm 108 so as to prevent the seedling planting tool 59, the compact seedling planting apparatus 50 is achieved in which the width in the front-rear direction of the drive arm 36 and swing arm 108 is suppressed.

  Further, a connecting portion 110 that connects the swing arm 108 and the seedling planting tool 59 is provided on the left and right inner sides of the seedling planting tool 59, and on the surface facing the connecting portion 110 of the balance weight portion 36a of the drive arm 36, Concave portions are provided on the right and left sides so as not to contact the connecting portion 110 when the drive arm 36 is driven to rotate. That is, the balance weight part 36a is provided to be displaced inward in the left-right direction with respect to the connection side end part 36b so as not to interfere with the connection part 110. For example, as shown in FIG. 7A, the balance weight portion 36a may be formed with a recess 36aa so as to avoid a bolt 110 portion connecting the seedling planting tool 59 and the swing arm 108 in plan view.

  As described above, when the driving arm 36 is driven to rotate, the concave portion 36aa is provided on the surface of the balance weight portion 36a facing the connecting portion 110 so as not to come into contact with the connecting portion 110, so that the driving arm 36 can be driven to rotate. There is no interference with the connecting portion (bolt 110 portion) between the swing arm 108 and the seedling planting tool 59.

7A, the width W1 of the rear end portion of the support frame 46 (connecting portion with the swing arm 108) 46a is set to the front end portion of the support frame 46 (with the planting output shaft 9). The width may be smaller than the width W2 of the connecting portion 46b (W1 <W2), and the rear portion of the support frame 46 may be tapered.
In the case of a seedling transplanting machine having a narrow spacing between planting lines, the swing arms 108 of adjacent seedling planting tools 59 approach each other. Therefore, it is necessary to reduce the width of the support frame 46 in order to prevent the swing arms 108 from interfering with each other. However, if the lateral width of the entire support frame 46 is reduced, the strength of the support frame 46 is reduced.

  However, instead of reducing the width of the entire support frame 46 in the lateral direction, the width of the rear end portion 46a to which the swing arm 108 is connected is made narrower than other portions, so that Since the portion can secure a sufficient width in the lateral direction, the strength of the entire support frame 46 can be maintained.

Further, FIG. 8 shows a plan view (four-row planting) of the seedling tank 6 on which the seedling placing part 6e having a large interstitial distance is mounted, and FIG. 9 shows a case where the spacing between the seedling placing parts 6e is narrowed. The top view (six-row planting) of the seedling tank 6 is shown. Further, FIG. 10 shows a cross-sectional view of the seedling tank 6 of FIG.
The case where the narrow seedling mounting part 6e is formed by cutting and joining the wide seedling mounting part 6e of the four-row planting will be described. For example, when the distance between the streaks is reduced from 30 cm to 25 cm, 6 stumps are formed by connecting 5 cm from the lateral width (30 cm) of each seedling mounting portion 6e of the 4 stump seedling tank 6 shown in FIG. It is used as a seedling tank 6. Moreover, although the unevenness | corrugation is provided in the surface of each seedling mounting part 6e so that the transfer of a seedling may become smooth, the cutting position C of the seedling mounting part 6e is set to the recessed part 118 of the seedling mounting part 6e surface. And the joint D of each seedling mounting part 6e is fixed by the rivet 116.

The seedling tank 6 of the conventional seedling transplanting machine is integrally formed, and it is made separately for 6-row planting and 4-row planting. The seedling tank 6 for four-row planting can be used by reducing the width and connecting them together.
Then, the joint D is aligned with the concave portion 118 on the surface of the seedling mounting portion 6e and fixed by the rivet 116, so that the head of the rivet 116 does not jump out on the surface of the seedling mounting portion 6e. Therefore, by cutting and connecting the seedling placement portions 6e in this way, it is possible to prevent the seedlings on each seedling placement portion 6e from being caught and hindering the conveyance.

  Similarly, the extended seedling mounting portion 120, which is an extended portion of the seedling tank 6, may be connected with a reduced width. The extended seedling mounting part 120 is also cut and connected in the same manner as the seedling mounting part 6e, but the cutting position and the connecting position are matched to the cutting position C and the connecting position D of the seedling mounting part 6e to be the same position in the left-right direction. The partition for each line is connected by the same line, and the sliding resistance of the seedling can be reduced. When the connecting position between the extended seedling mounting part 120 and the seedling mounting part 6e is different in the left-right direction, the seedling that slides on the extended seedling mounting part 120 stops at the joint between the extended seedling mounting part 120 and the seedling mounting part 6e. However, the seedling smoothly slides on the seedling tank 6 by aligning the connecting positions of the extended seedling mounting section 120 and the seedling mounting section 6e in a straight line.

In FIG. 11, the top view of the seedling tank 6 at the time of changing the horizontal width of each seedling mounting part 6e of the seedling transplanter shown in FIG. 2 is shown. FIG. 11A shows the seedling tank 6 when the distance between the streaks is wide (for example, 30 cm), and FIGS. 11B and 11C show the case where the distance between the streaks is narrow (for example, 25 cm). A seedling tank 6 is shown.
A seedling feeding belt 6c is disposed in a hole 153 provided at the bottom of the lower end of each seedling placing portion 6e of the seedling tank 6, and the seedling feeding belt 6c is operated by driving the seedling feeding arm 172 (FIG. 3). The seedling on the seedling feeding belt 6c is sent downward.

When narrowing the seedling placement part 6e with a distance of 30 cm shown in FIG. 11 (a) to a distance of 25 cm between the seedlings, the two seedling feeding belts 6c on each seedling placement part 6e are cut equally at two left and right lengths. 11B, when forming a seedling placement part 6e with a distance of 25 cm between the strips, where two symmetrical symmetrical seedling feeding belts 6c as shown in FIG. 11B are formed, there are two joining positions D of each seedling placement part 6e. Therefore, it takes time and effort for processing, and the cost increases.
However, the two seedling feeding belts 6c on each seedling mounting portion 6e are cut and joined at only one place so as to pass only the hole 153 of one of the left and right seedling feeding belts 6c, as shown in FIG. 11 (c). When the seedling placement part 6e having a distance of 25 cm between the streaks is arranged with the left-right asymmetric seedling feeding belt 6c, the connection position D of each seedling placement part 6e is only one, so that the labor of processing is reduced and the cost can be reduced. .

FIG. 12 shows an explanatory diagram (simplified view) when the seedling box for the seedling placing part 6e having a long inter-strip distance is used for the seedling placing part 6e having a short inter-strip distance. 12 (a) shows a perspective view of the seedling box 125, FIG. 12 (b) shows a sectional view of the seedling box 125 when the seedling is grown, and FIG. 12 (c) shows a partial plan view of the seedling tank 6. The figure is shown.
In the case of the seedling mounting part 6e having a wide inter-strip distance (four-row planting), the seedlings 125 are usually grown in the seedling box 125 adjusted to the width of the wide seedling mounting part 6e. It cannot be mounted on the narrow seedling portion 6e. That is, the size of the seedling box 125 is determined by the distance between the streaks of the seedling mounting portion 6e, and lacks versatility.

Therefore, a half-width seedling is created by raising the partition 130 in the center of the seedling box 125, and the width of the partition protrusion 6d of the seedling tank 6 is set so as to match the seedling width of the narrow seedling. To do.
For example, when the inter-strip distance is 30 cm, the lateral width of the seedling box 125 is 28 cm (the lateral width of the partition protrusion 6d is 2 cm), and a partition (fence) 130 is inserted into the center of the seedling box 125 to obtain the lateral width. 14cm (28/2) seedlings are raised. And when installing in the seedling mounting part 6e whose distance between stripes is 25 cm (FIG.12 (c)), since it is 25-14 = 9cm, the width W of the partition protrusion part 6d of the seedling mounting part 6e is expanded to 9 cm. To use.

  In this manner, the seedlings grown using the conventional seedling box 125 can be mounted on the seedling mounting portion 6e having a narrow inter-strip distance. Therefore, it is not necessary to prepare a seedling box 125 for the seedling placement part 6e having a narrow inter-strip distance, which is economical.

  FIG. 13 (a) shows a plan view of the seedling tank 6 and the seedling planting device 50 of the four-row seedling placement section 6e with a long inter-strip distance, and FIG. 13 (b) shows a short inter-strip distance. A plan view of the seedling tank 6 and the seedling planting device 50 of the six-row seedling placement section 6e is shown, and FIG. FIG. 13 (d) shows a plan view of the seedling tank 6 when mounted on the seedling mounting portion 6e, and FIG. 13 (d) shows a case where the seedling tank 6 in FIG. 13 (c) moves laterally (refers to moving in the left-right direction). The top view of the seedling tank 6 is shown.

  Although the width W of the partition protrusion 6d of the seedling mounting part 6e (four-row planting) with a wide inter-strip distance and the seedling mounting part 6e (six-planting) with a short inter-strip distance is usually the same width, When mounting a seedling for a large seedling mounting portion 6e on the seedling mounting portion 6e having a short inter-strip distance, the width W of the partition protrusion 6d is made as small as possible so that a seedling having a normal width is mounted on the seedling tank 6. If the partition protrusion 6d is moved to the left and right of the seedling planting tool 59 by the lateral movement of the seedling tank 6, it can be planted with a narrow inter-strip distance.

For example, when the normal width W of the partition protrusion 6d of the seedling placement part 6e (four-row planting) with a long inter-strip distance is 2 cm and the inter-strip distance J of the four-row plant is 30 cm (FIG. 13 (a)). Similarly, the normal width W of the partition protrusion 6d of the seedling placement part 6e (six-row planting) with a short inter-strip distance is 2 cm, and the inter-strip distance J is 25 cm (FIG. 13B).
When the inter-strip distance J of the 4-row planting is 30 cm, the lateral width of the seedling mounting portion 6e is 28 cm when the lateral width of the partition protrusion 6d is 2 cm. Therefore, as shown in FIG. 13 (c), the lateral width of the seedling mounting portion 6e is set to 28 cm, which is the same as the lateral width of the four-row seedling mounting portion 6e in FIG. The seedlings are small, for example, 1 mm and close to each other. And in order to match | combine the horizontal width of the seedling tank 6, the seedling with a different width | variety from the other seedling mounting part 6e is put into the part of 8 cm of horizontal width shown by the shaded part on the left side.

The lateral movement distance of the seedling tank 6 is the same as the lateral movement distance Y (Fig. 13 (c)) (the lateral movement distance Y is 23 cm) of the six-row plant with the distance between the stripes of 25 cm. The part 6d moves laterally through the seedling removal outlet 6b, which is the scraping position of the seedling planting tool 59 of the seedling planting device 50 (moves to the dotted line position in FIG. 13C).
When the seedling tank 6 is laterally moved by Y in the left direction from the position shown in FIG. 13C, the seedling tank 6 becomes the position shown in FIG.

FIG. 14 shows an explanatory diagram (simplified plan view of the seedling tank 6) when the seedling planting tool 59 scrapes off the seedling from the seedling mounting portion 6e of the seedling tank 6. FIG.
15 (a) to 15 (c) are explanatory diagrams when the seedling planting tool 59 scrapes off the seedling from the seedling mounting portion 6e of the seedling tank 6 (simple view near the seedling planting tool 59). . FIGS. 15A and 15B are plan views, and FIG. 15C is a side view.

FIG. 14 will be described.
When trying to plant a seedling with a distance of 25 cm using the seedling mounting portion 6e with a distance of 30 cm, for example, when the seedling tank 6 moves laterally to the left end, When the right end of the seedling mounting part 6e is aligned, the width part of 3 cm on the left side of the rightmost end (first strip) seedling is planted by the second seedling planting tool 59 from the right (second strip). It will be. Hereinafter, the seedlings are scraped off from the partition protrusion 6d by an integral multiple width of 3 cm, and from the seedling mounting part 6e of the adjacent strip.

That is, the width of 6 cm on the left side of the second row of seedlings is planted by the third row of seedling planting tools 59, and the width of 9 cm on the left side of the third row of seedlings is planted by the fourth row of seedling planting tools 59. Will be planted. Then, the width of 12 cm on the left side of the 4th seedling is planted by the 5th seedling planting tool 59, and the width of 15cm on the left side of the 5th seedling is planted by the 6th seedling planting tool 59. Will be planted. The remaining seedlings with hatched parts are removed as appropriate.
And the nail | claw 59a (FIG. 7) of the seedling planting tool 59 scrapes off a seedling just by the right-and-left end (right and left sides) of the partition rib part 6d, and the nail | claw 59a of the seedling planting tool 59 and the partition rib part 6d It is advisable to set the number of horizontal movements of the seedling tank 6 so as not to interfere. If the distance of one lateral movement of the seedling tank 6, that is, the scraping width of the seedling, is Z, Z is a value obtained by dividing 3 cm by an integer.

The number of times of lateral feeding (number of times of lateral movement) of the seedling tank 6 is a value obtained by dividing the inter-strip distance J by the lateral movement distance Z per seedling removal of the seedling planting device 50. Set to scrape seedlings. That is, a value obtained by dividing 3 cm by an integer is the scraping width Z, and dividing 25 cm between the stripes by this Z is the number of times of horizontal feeding.
For example, when the seedling scraping width (lateral movement distance Z) of the seedling planting tool 59 is 1 cm (when an integer of “the value obtained by dividing 3 cm by an integer” is set to 3), the distance between the streaks is 25 cm. Therefore, the number of times of horizontal feeding is 25 times (25/1 = 25).

Since the width W of the partition projection 6d is made as small as possible, the width of the gap 59aa of the claw 59a of the seedling planting tool 59 is larger than the width W of the partition projection 6d. Therefore, when the seedling planting tool 59 is scraped off, the lateral movement distance Z for one time is set such that the notch portion of the claw 59a in the plan view U-shape passes right and left of the partition protrusion 6d. The gap 59aa at the notch is made to pass through the width of the partition protrusion 6d. Even if the partition protrusion 6d does not pass through the gap 59aa at the notch, both do not interfere with each other.
When the gap 59aa in the cutout portion of the seedling planting tool 59 passes through the width of the partition ridge portion 6d, the seedlings on both the left and right sides of the partition ridge portion 6d can be scraped simultaneously with the same nail 59a.

Moreover, as shown in FIG.15 (c), you may notch the partition protrusion part 6d of the seedling receiving plate 6a of the seedling extraction exit 6b part which is a scraping position of a seedling. That is, the partition protrusion 6d is not provided at the seedling outlet 6b of the seedling receiving plate 6a, and the length (lower end) of the partition protrusion 6d in the longitudinal direction is made shorter than usual, thereby ensuring reliable partitioning. Interference between the protrusion 6d and the claw 59a of the seedling planting tool 59 can be prevented. Furthermore, it is also possible to remove all the partition protrusions 6d of the seedling placement part 6e of the seedling tank 6 so as to be completely removed so that seedlings having an arbitrary width can be mounted. For example, seedlings are grown on the entire surface in a seedling box having a large width such as a lawn, and the seedlings are replenished so that they are appropriately cut and filled on the seedling tank 6 (seedling mounting part 6e).
By doing so, it saves the trouble of raising seedlings and is economical.

  The seedling transplanter of the present invention is not limited to a rice transplanter, and may be used as a seedling transplanter for planting other seedlings such as vegetable seedlings. Also, a riding seedling transplanter or a walking seedling transplanter may be used.

DESCRIPTION OF SYMBOLS 1 Planting transmission part 2 Center case 3 Input shaft 4 Transmission shaft 6 Seedling tank (seedling stage) 6a Seedling receiving plate 6b Seedling outlet 6b Seedling outlet 6c Seedling feeding belt 6d Partitioning ridge 6e Seedling part 8 Safety clutch 9 Planting Output Shaft 10 Lead Cam Shaft 11 Cam Shaft Transmission Mechanism 12 Cam Shaft Transmission Case 13 Front Wheel 14 Front Wheel Axle 15 Rear Wheel 16 Rear Wheel Axle 17 Step Floor 18 Mid Cover 19 Driver's Seat 20 Getting On / Off Step 21 Fuel Tank 22 Mission Case 23 Planting Attached transmission shaft 24 Steering post 25 Preliminary seedling stage 25a Post 26 Rear frame 27 Elevating cylinder 28 Hitch link 29 Hydraulic valve 30 Support frame 36 Drive arm 40 Float shaft 41 Branching transmission portion 43 Side case 44 Spacer case 46 Frame 47 Cam groove 48 Lead cam 50 Seedling planting device 50a Moving shaft 51 Center float 52 Side float 53 Angle of attack sensor 55 Rolling shaft 56 Traveling vehicle body 57 Lift link 57a Upper link 57b Lower link 59 Seedling planting tool 61 Planting partial clutch 62 畦 Clutch lever 63 Seedling feeding partial clutch 67 Chain Sprocket 68 Spring 72 Planting cable 73 Seedling feed cable 80 Front wheel final case 81 Rear wheel gear case 90 Engine output pulley 91 Belt 93 Hydrostatic transmission 95 Spring 110 Bolt (connection part)
116 Rivet 115 Depth frame 118 Recessed portion 120 Extended seedling mounting portion 125 Seedling box 130 Partition 153 Hole 170 Seedling feed drive cam 172 Seedling feed arm 174 Rotating shaft 176 Link 178 Chain 206 Drive side clutch body 207 Passive side clutch bodies 206a and 207a Clutch Teeth 207b Clutch pin grooves 209, 214 Spring 210 Sprocket 211 Washer 213 畦 Clutch pin 216 Chain 219 L-shaped shifter arm 220 Seedling drive roller 221 Drive side clutch body 220a, 221a Clutch tooth 223 Driven roller E Engine N Seedling Part S Rotating fulcrum shaft

Claims (2)

Traveling vehicle body (56),
A drive source (E) provided on the traveling vehicle body (56);
A seedling stand (6) provided behind the traveling vehicle body (56);
A seedling planting device (50) provided in association with each planting line to plant seedlings on the seedling stage (6);
A case (2, 43) containing a planting transmission portion provided for each seedling planting device (50) in order to transmit power from the drive source (E) to the seedling planting device (50); In a multi-row seedling transplanter,
The seedling planting device (50)
The traveling vehicle body (56) has a longitudinal direction in the left-right direction toward the advancing direction, protrudes from the left and right sides of the planting transmission case (2, 43), and extends from the planting transmission case (2, 43). An output shaft (9) rotated by power,
A drive arm (36) of each planting strip that is fixedly connected to both ends of the output shaft (9) and rotated by rotation of the output shaft (9);
An oscillating arm in which the end of each planting transmission case (2, 43) is connected to the rear of the mounting portion of the output shaft (9), and the other end oscillates in the front-rear direction with the end as a fulcrum. (108) and
It is provided on each of the left and right sides of each planting transmission case (2, 43) in the forward direction of the traveling vehicle body (56), and the front part is the end (36b) of the driving arm (36) of each planting strip. The rear part is connected to the swing side end of the swing arm (108), and the swing arm (108) is swung by the drive rotation of the drive arm (36) of each planting strip. A seedling planting tool (59) for each planting line for planting seedlings in a loop-like operation locus having a long front end in the vertical direction when viewed from the side in the forward direction of the traveling vehicle body (56);
The driving arm (36) is balanced with the seedling planting tool (59) at the end opposite to the connection side end section (36b) with the seedling planting tool (59), and the vehicle body ( 56) projecting inward from the left and right ends of the planting transmission case (2, 43) toward the forward direction, and at the left and right ends of the planting transmission case (2, 43) when the drive arm (36) is driven to rotate. A seedling transplanter characterized in that a balance weight portion (36a) is provided at a position where it does not contact. The seedling planting tool (59) is provided on the outer side in the left-right direction of the drive arm (36) in the forward direction of the traveling vehicle body (56),
The swing arm (108) is substantially the same as the drive arm (36) in the left-right direction with respect to the forward direction of the traveling vehicle body (56) or outside the drive arm (36), and Provided inside the left and right direction of the seedling planting tool (59),
A connecting portion (110) for connecting the swing arm (108) and the seedling planting tool (59) is provided on the left and right inner sides of the seedling planting tool (59) in the forward direction of the traveling vehicle body (56). ,
Rotation of the drive arm (36) on the surface facing the connecting portion (110) of the balance weight portion (36a) of the drive arm (36) on the left and right in the forward direction of the traveling vehicle body (56). The seedling transplanter according to claim 1, wherein a recess (36aa) is provided so as not to contact the connecting portion (110) during driving.

Images