JP2007143537A - Seedling stock-transplanting apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seedling stock-transplanting apparatus capable of ensuring seedling stock posture and enabling planting of high accuracy by compact constitution without interference with a planting tool. <P>SOLUTION: The seedling stock-transplanting apparatus is composed of a seedling-placing base 51, an edge-receiving member 63e and a bottom-receiving member 63f for receiving an lower end edge of a mat seedling M and left and right seedling stock-guiding plates 63g opposing while interposing the stock port 51a, a planting tool 62, etc. and the left and right seedling stock guide plates 63g are attached and fixed to the bottom-receiving member 63f and the edge-receiving member 63e and are formed in a state protruded from the edge-receiving member 63e to the side of the planting tool 62 and bifurcated rib connecting two ribs 63a and 63b each extending from the bottom-receiving member 63f and the edge-receiving member 63e to each other is provided along the transfer direction T of seedling stocks on the outside of left and right seedling stock guide plates 63g. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a seedling transplanting device that is mounted on a seedling planting machine and is stocked from a mat seedling and planted in a field.

As described in Patent Document 1, a seedling transplanting device mounted on a seedling planting machine includes a seedling platform that accommodates mat seedlings in an inclined posture, and an edge receiving member and a bottom receiving member for receiving the mat seedling lower end. Is formed of a seedling receiving portion in which the cross section is integrally formed in an L shape, a seedling guide plate provided on the left and right sides of the stock dividing opening, a planting tool that performs planting operation in a predetermined locus, and the like.
The seedlings stocked by the planting tool from the lower end of the mat seedling of the seedling transplanting device are moved along the right and left seedling guide plates and are planted in the field.
JP-A-9-266711

  However, since the right and left seedling guide plates need to be made small in a range that does not interfere with the planting tool, the posture of the seedling may be disturbed by swinging in the left-right direction, and as a result, there is a problem that planting accuracy cannot be secured. there were.

  An object of the present invention is to provide a seedling transplanting device that can secure a seedling posture and enables high-accuracy planting with a compact configuration that does not interfere with a planting tool.

The invention according to claim 1 is a seedling table that slidably accommodates mat seedlings in an inclined position, an edge receiving member that receives the lower end edge of the mat seedlings set on the seedling mounting base, and holds the edge receiving member. A bottom receiving member that receives the bottom surface side of the mat seedling, a right and left seedling guide plates that are opposed to each other with a stock portion formed by cutting out a part of the edge receiving member and the bottom receiving member, and the stock portion A seedling transplanting device comprising a planting tool for planting and transferring a portion of a mat seedling from the left and right seedling stock guide plates and transferring the seedling stock along the left and right seedling guide plates. It is attached to and supported by the receiving member and protrudes from the edge receiving member to the side of the planting tool. On the outside of the seedling guide plate, there are two extending from the bottom receiving member and the edge receiving member, respectively. A bifurcated rib with ribs connected to each other along the direction of seedling transfer. Characterized in that Te is provided.
The left and right seedling guide plates have a large bending rigidity in the left-right direction due to the bifurcated ribs.

  According to the configuration of claim 1, the tip of the planting tool enters the stock outlet, separates the seedling from the mat seedling, and the seedling is extended by the planting tool along the planting transfer locus. It is moved while being guided left and right. Since this bifurcated rib extends to the bottom receiving member and the edge receiving member, the right and left seedling guide plates ensure the bending rigidity to the side and suppress the positional deviation with the stock outlet. The posture of the seedling can be maintained up to the vicinity of the planting position while suppressing the right and left movement of the planting tool through the seedling. Therefore, the seedling transplanting device having the above configuration can plant the seedlings in a predetermined posture with high accuracy by the compact reinforcing rib that does not interfere with the planting tool.

A seven-row planting type rice transplanter as an embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 1 is an overall side view of the riding type rice transplanter of this embodiment, and FIG. 2 is a plan view of the rice transplanter of FIG.

  In this rice transplanter 1, a seedling transplanting device 4 as an agricultural machine unit is connected to a rear side of the traveling vehicle body 2 via a lifting and lowering connecting device 3 so as to be lifted and lowered. The traveling vehicle body 2 is a four-wheel drive vehicle including a pair of left and right front wheels 10 and 10 and rear wheels 11 and 11 which are drive wheels. A mission case 12 is disposed at the front of the fuselage. Front wheel final cases 13 and 13 are provided on the left and right sides of the front wheels, and front wheels 10 and 10 are attached to front wheel axles that protrude outward from a front wheel support portion that can change the steering angle of the front wheel final cases 13 and 13. . Further, the front end portion of the main frame 15 is fixed to the rear portion of the transmission case 12, and the rear wheel gear case 18 is supported by a rear wheel rolling shaft provided horizontally at the front and rear of the rear end of the main frame 15 in the horizontal direction. The rear wheels 11 and 11 are attached to a rear wheel axle that is supported in a freely rolling manner and projects outwardly from the rear wheel gear cases 18 and 18.

  The engine 20 is mounted on the main frame 15, and the rotational power of the engine 20 is transmitted to the transmission case 12 via a first belt transmission device 21 and a second belt transmission device 23 capable of continuously variable transmission. Then, after being shifted by the transmission in the transmission case 12, the power is separated into traveling power and external power to be extracted.

  A part of the traveling power is transmitted to the front wheel final cases 13 and 13 to drive the front wheels 10 and 10, and the rest is transmitted to the rear wheel gear cases 18 and 18 to drive the rear wheels 11 and 11. Further, the external take-out power is transmitted to a planting clutch case 25 provided at the rear portion of the traveling vehicle body 2, and then transmitted to the seedling transplanting device 4 through a planting transmission shaft 26.

The upper part of the engine 20 is covered with an engine cover 30, and a seat 31 is installed thereon. A front cover 32 that houses various operation mechanisms is provided in front of the seat 31, and a handle 34 for steering the front wheels 10 and 10 is provided above the front cover 32. The engine cover 30 and the front cover 32 have horizontal floor steps 35 on the left and right sides of the lower end.
The rear portions of the front cover 32 and the floor step 35 are rear steps 36 that are higher than the floor step 35. On both the left and right sides of the front part of the traveling vehicle body 2, spare seedling platforms 38, 38 on which replenishment seedlings are placed are provided so as to be pivotable between a position projecting laterally from the machine body and a position stored inside. ing.

  The lifting and lowering connecting device 3 has a parallel link configuration, and includes a single upper link 40 and a pair of left and right lower links 41 and 41. The links 40, 41, 41 are rotatably supported at the base side by a link base frame 42 erected at the rear end of the main frame 15, and a vertical link 43 is connected to the tip side. A connecting shaft 44 that is rotatably supported by the seedling transplanting device 4 is inserted into and connected to the lower end portion of the vertical link 43, and the seedling transplanting device 4 is connected so as to be rotatable about the connecting shaft 44.

  A piston rod of a lifting hydraulic cylinder 45 whose base is pivotally attached to the main frame 15 is connected via a spring to the tip of a seedling support frame 46 formed integrally with the upper link 40, and the cylinder 45 is hydraulically connected. By extending and contracting, the upper link 40 rotates up and down, and the seedling transplanting device 4 moves up and down while maintaining a substantially constant posture.

  The seedling transplanting device 4 has a seven-row planting structure, a transmission case 50 that also serves as a frame, a seedling mounting base 51 that carries seedlings and reciprocates left and right to supply seedlings one by one to the stock outlets 51a of each row. , Planting device 52 for planting seedlings supplied to the stock outlet 51a,..., And a pair of left and right drawing markers 53L, 53R for drawing the machine course in the next stroke to the topsoil surface.

  In the lower part of the seedling transplanting device 4, a center float 55 is provided at the center, and mid floats 57, 57 and side floats 56, 56 are provided on the left and right sides thereof. When the aircraft is advanced with these floats 55, 56, 57 in contact with the mud surface of the field, the floats 55, 56 slide while leveling the mud surface, and the seedlings 52,. Is planted.

  Each of the floats 55 and 56 is pivotably attached so that the front end side moves up and down according to the unevenness of the field soil surface. Up and down movement of the front part of the center float 55 is detected by a vertical movement detection mechanism during planting work. Then, according to the detection result, the planting depth of the seedling is always kept constant by switching the hydraulic valve that controls the lifting hydraulic cylinder 45 to raise and lower the seedling transplanting device 4.

  The seedling transplanting device 4 is slidable to the left and right by the power on the traveling vehicle body via the planting transmission shaft 26 (FIG. 1). A seedling located at the lowermost stage of the platform 51 is supplied to the stock outlet 51a (FIG. 2), and the seedling device 52,... When the seedling platforms 51,... Move to the end of the left and right stroke and all the seedlings at the lowest stage are planted, the seedling feeding belt 60 is operated to transfer the seedlings on the stage downward by one stage.

  Further, as shown in the development view of the seedling support frame configuration in FIG. 3, a hook clutch 103 that switches the operation and stop of the planting device 52 in units of two adjacent strips is provided in the transmission case 102. Since the clutch 103 is often operated to “disengage” at the time of work at the heel side, it is usually called the above-mentioned “畦 clutch”. The hook clutch 103 is turned on and off by the hook clutch lever 54 provided on the handle post. The hook clutch lever 54 is provided corresponding to each hook clutch 103.

  The support frame is provided with three vertically long vertical frames 65a to 65c that support the upper part of the seedling platform 51 so as to be movable left and right via a roller 111 that is a left and right movement guide unit. The pair of first horizontal frames 67a and 67b that connect between the horizontal frame 66 that spans 65c and the two vertical frames 65a and 65b located at the left end and the center of the three vertical frames 65a to 65c. The vertical frame 65a, 65b is fixed by welding or the like so that it cannot be removed, and an attachment portion is provided between the pair of horizontal frames 67a, 67b to which the drawing force driving device 82 can be attached.

  The pair of second horizontal frames 68a and 68b connecting the remaining one vertical frame 65c and the central vertical frame 65b are detachable from the two vertical frames 65b and 65c, respectively. The horizontal frames 67b and 68b also serve as a support frame for the fertilizer hose 64.

  A guide roller 111 of the seedling stage 51 is attached to the upper ends of the three vertical frames 65a to 65c, and a planting transmission case 102 having a planting tool 62 is provided to the lower ends of the three vertical frames 65a to 65c. It is connected.

Since the first horizontal frames 67a and 67b and the vertical frames 65a and 65b provided with the attachment portions in the above configuration are fixed by a method such as welding or integral molding so that they cannot be removed, they can be manufactured at low cost.
In addition, by changing the second horizontal frames 68a and 68b, the entire horizontal width of the frames 65 to 68 can be changed in accordance with the size of the seedling transplanting device 4 such as the number of seedling platforms 51 installed. The versatility of is increased.
Further, since the support frame structure of the seedling transplanting device 4 has a compact configuration and is strong, the seedling stage guide roller 111 can be attached to the upper ends of the vertical frames 65a to 65c.

  Further, a drawing marker driving device 82, which is an essential component in the seedling transplanter, is disposed between the pair of left vertical frames 65a and 65b, and the center of gravity of the entire support frame structure is located to the left of the drawing. In such a seedling transplanter that does not use the fertilizer 61, even if the right second horizontal frame 68b and fertilizer hose 64 are removed, the planting transmission case 101 is located on the right side. The balance in the left-right direction can be maintained.

  FIG. 4 shows a schematic side view of the seedling transplanting device 4, and a configuration is adopted in which a marker wire (not shown) of the left and right drawing markers 53 is passed between the seedling mount 51 and the fertilization hose 64. As a result, the marker wire is guarded by the fertilizer hose 64 and the vertical frame 65 in the front and rear, so that the marker wire is not caught on the rear wheel 11, all the parts are neatly stored, and the appearance is also beautiful.

  Below the seedling stage 51, as shown in FIG. 5 as viewed in the direction of arrow A in FIG. 4, left and right vertical frames 65a through left and right rolling springs 47a and 47a from the transmission case 50 that supports the connecting shaft 44. A support means capable of a rolling operation is configured by being connected to a support rail 51r connected to 65c and extending to the left and right directions of the machine body on the lower surface of the seedling stage 51 via left and right balance springs 47b and 47b.

(Share branch)
In the stock outlet 51a of the seedling transplanting device 4, as shown in FIGS. 6 and 7, respectively, a side view and a front view of the main part thereof are slidably accommodated so that the mat seedling M can be slid. In order to receive the seedling mount 51 that reciprocates in the left and right directions and the lower end of the mat seedling M, seedling receiving portions 63e and 63f extending in the left-right direction of the machine body are provided. In the stock outlet 51a of the seedling receiving parts 63e and 63f, a planting tool 62 for planting and transferring the seedlings with a predetermined trajectory T is disposed while partly separating the seedlings M from the lower end of the mat seedling M. .

  Specifically, the seedling placing stand 51 includes a bottom plate 51b that is slidable so that the mat seedling M can be slid, and a seedling receiving portion is disposed at a position facing the inclined lower end. The seedling receiving portion includes an edge receiving member 63e that receives the lower end edge of the mat seedling M set on the seedling mount 51, and a bottom receiving member 63f that receives the bottom side of the mat seedling M while holding the edge receiving member 63e. Are integrally formed in an L-shaped cross section, a part of which is cut out to form a stock outlet 51a, and left and right seedling guide plates 63g and 63g that are opposed to each other across the stock outlet 51a are formed as seedlings. It is provided along the transfer trajectory T of the stock.

  The left and right seedling guide plates 63g, 63g are attached to and fixedly supported on the bottom receiving member 63f and the edge receiving member 63e, and project from the edge receiving member 63e within a range h that does not interfere with the planting tool 62 side. On the outer side of each of the seedling guide plates 63g and 63g, a bifurcated structure comprising two ribs 63a and 63b extending from the bottom receiving member 63f and the edge receiving member 63e, respectively, and an extending rib 63c extending further by connecting them together. A rib is formed in a Y shape in a side view along the transfer path T of the seedling.

  In the seedling transplanting device 4 having the above-described configuration, the tip of the planting tool 62 enters the stock outlet 51 a to separate the seedling from the mat seedling M, and this seedling is moved along the movement trajectory T by the planting tool 62. The left and right seedling guide plates 63g, 63g are moved while being guided left and right. Since the left and right seedling guide plates 63g and 63g have bifurcated ribs 63a to 63c extending to the bottom receiving member 63f and the edge receiving member 63e, the lateral bending rigidity is ensured and the position of the left and right seedling guide plates 63g and 63g is determined. The shift is suppressed, and as a result, the posture of the seedling can be maintained up to the vicinity of the planting position while suppressing the right and left movement of the planting tool 62 through the seedling.

  In this way, the right and left seedling guide plates 63g, 63g prevent twisting after molding by the bifurcated ribs 63a to 63c on the outer side surfaces, and ensure a large bending rigidity in the left-right direction. By holding the seedling in a predetermined posture even by the vibration of 62, high-accuracy planting becomes possible.

(Fertilization hose)
FIG. 8 is a side view of the arrangement configuration of the fertilization hose.
The fertilizer hose 64 disposed within the width of the seedling stage 51 is configured to be forced forward by a horizontal connecting tube of the seedling stage frames 67b and 68b so that the rolling spring 47a is released. By comprising in this way, since it can comprise according to the fertilization hose 64 arrange | positioned by escaping the rear-wheel tire 11 in the both outer side parts of the seedling stand 51, the weight balance of the body is improved by suppressing the overall length of the body compactly. can do.

(Side plate)
FIG. 9 is a side view of the side plate portion of the seedling transplanting apparatus.
A flange-shaped side plate 71 that closes both sides of the seedling stage frame 102 is provided, and is formed integrally with the planting depth frame pipe 107d and the tube seedling hole for blinding and lateral positioning. The stop plate 71 can reduce the number of parts and improve the appearance.

(bracket)
FIG. 10 is a plan view of a rolling hub portion of the seedling transplanting apparatus.
The bracket 44b that connects the rolling hub 44h and the planting part frame 102 is formed of a single rigid body, and is disposed at a position between the heel clutch cable 103c and the fertilizer hose 64. With this configuration, the seedling transplanting device 4 can be supported even when the heel clutch cable 103c has to pass under the lead cam 107.

(Transmission system)
FIG. 11 is a side view of the transmission system of the seedling transplanting device.
The main transmission shaft 4a, the counter shaft 107c, the lead cam shaft 107, and the planting depth frame 107d are arranged vertically so that the lines connecting the shafts of the planting depth frame 107d are tilted forward along the inclination of the seedling mounting table 51. Constitute. By configuring in this way, the distance between the shafts is extended, the bending angle of the shaft becomes gentle, the transmission system is made compact, and the weight and the center of gravity can be reduced.

(Line marker)
FIG. 12 is a side view in which the storage state of the line marker 53 is shown, and FIG. 13 is an enlarged view (a) of the line marker support part and its B arrow view (b).
By supporting the main body using the joint 53s of the line marker 53 as an elastic member such as a spring, it is possible to reduce the cost with a simple configuration, and avoid the situation where the guide does not move due to mud clogging when the guide is configured with a pipe material. can do.

(float)
FIG. 14 is a plan view (a) and a side view (b) of the float.
In the case of seven row planting, two side floats 56 are arranged on both outer sides, and three center floats 55 are arranged in the center. The center float 55 has a configuration in which the center portion 55c protrudes thinly and the both side portions 55s and 55s move backward to allow the rear wheel 11 to escape. The up-turn of the central part 55c is formed so that the tip of the central part 55c and both side parts 55s, 55s is inclined upward to form an up-turn and the seedling transplanting device 4 does not interfere with the hydraulic link at the uppermost position. It is formed lower than both side portions 55s and 55s.

By comprising in this way, the disadvantage of sensing by mud accumulating and becoming heavy at a float tip and both ends can be eliminated, without requiring the separate float by a hollow material.
Further, the front end edge of the float 55 is formed by the center part 55c and both side parts 55s and 55s by the left and right direction lines of the machine body, so that the muddy water can be satisfactorily introduced and the discharge can be reduced. Further, by matching the tip positions of the side portions 55 s and 55 s with the tip position of the side float 56, mud can be made to be uniform. In this case, a rear wheel constituted by a large-diameter outer ring and a small-diameter inner ring is provided by arranging the front end positions of both side portions 55s, 55s of the center float 55 so as to come out ahead of the front end position of the side float 56. It is possible to reduce the influence of water on the side float 56 while ensuring escape from the side.

Further, as shown in FIG. 15A, the bottom surface of the center float 55 is formed with drainage grooves 55t and 55t at the boundary between the central portion 55c and both side portions 55s and 55s. The front ends of the grooves 55t and 55t are inserted into the recesses 55b and 55b. The water draining grooves 55t and 55t can reduce the discharge of water, and the recesses 55b and 55b can improve the flow of mud and water.
In addition to the above, as shown in FIG. 15 (b), the drainage grooves 55u, 55u are formed between the planting strips with the tip side widened, or as shown in FIG. 15 (c), the drainage groove 55v. , 55w can be formed at the position P of the planting strip to improve drainage.

  As shown in FIG. 16, the tip side surface of the finger 55f is formed with a small recess 55r, and when the wear has progressed and its presence cannot be visually identified, the replacement time is taken as a guideline. can do.

It is a whole side view of a riding type rice transplanter. It is a top view of the riding type rice transplanter of FIG. It is a frame composition development view of a planting part. It is a side view of a planting part. It is A arrow directional view in FIG. It is a principal part side view of a seedling transplanting device. It is a principal part front view of a seedling transplanting device. It is a side view of the arrangement configuration of a fertilization hose. It is a side view of the side plate part of a seedling transplanting device. It is a top view of the rolling hub part of a seedling transplanting device. It is a side view of the transmission system of a seedling transplanting device. It is the side view which described the accommodation state of the line marker together. It is an enlarged view of a line marker support part. It is the top view (a) and side view (b) of a float. It is a bottom view (ac) of a float. It is a principal part block diagram of a finger.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rice transplanter 3 Elevating connection apparatus 4 Seedling transplanting device 10 Front wheel 11 Rear wheel 51 Seedling stand 51b Bottom plate 51a Stock split 52 Planting device 62 Planting tool 63a, 63b Rib (bifurcated rib)
63c Extension rib (bifurcated rib)
63e Edge receiving member (seedling receiving part)
63f Bottom receiving member (seedling receiving part)
63g Seedling Information Board M Matt Seedling T Transfer Trajectory

Claims (1)

A seedling stage (51) for slidably storing the mat seedling (M) in an inclined posture, and an edge receiving member (63e) for receiving the lower end edge of the mat seedling (M) set on the seedling stage (51) A bottom receiving member (63f) that receives the bottom surface side of the mat seedling while holding the edge receiving member (63e), and a part of the edge receiving member (63e) and the bottom receiving member (63f) are cut out. The left and right seedling guide plates (63g, 63g) that face each other across the stock division (51a), and part of the mat seedling (M) from the stock division (51a), and the left and right seedling guide plates In a seedling transplanting device comprising a planting tool (62) for planting and transferring a seedling along (63g, 63g),
The left and right seedling guide plates (63g, 63g) are formed of the bottom receiving member (63f) and the edge receiving member (
63e) and fixed to the edge receiving member (63e) projecting toward the planting tool (62) and formed on the outside of each of the left and right seedling guide plates (63g, 63g) A bifurcated rib that connects two ribs (63a, 63b) extending from the bottom receiving member (63f) and the edge receiving member (63e) to each other is provided along the transfer direction (T) of the seedling. Seedling transplanter.

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