JPH053706A - Sowing apparatus - Google Patents

Abstract

PURPOSE:To completely perform the ridge-making and sowing operations over the whole surface of a field by placing a ridge-forming mechanism at the back of a tilling mechanism through a parallelogramic link mechanism and moving the ridge-forming mechanism in lateral direction with a cylinder apparatus. CONSTITUTION:A ridge-forming mechanism 17 is connected at the back of a tilling mechanism 15 through a parallelogramic link mechanism 29 in a state freely movable in lateral direction. The ridge-forming mechanism is moved with a cylinder apparatus 30 through the parallelogramic link mechanism to the position immediately behind the tilling mechanism or at the right or left side of the mechanism.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION Field of the Invention The seeding device of the present invention relates to a device for directly sowing seeds such as rice paddy and seeds of vegetables in rice fields and uplands.

[0002]

2. Description of the Related Art Conventionally, as a seeding device of this type, for example, as described in Japanese Patent Application No. Hei 2-271775 and drawings, a seeding device is connected to a towing vehicle. The machine frame is provided with a plurality of shallow seeding grooves and a ridge-molding body that forms deep drainage grooves on both sides of each of the seeding grooves rotatably provided, and a shallow ridge-molding body is formed on the rear part of the ridge-molding body. A plurality of sowing tubes facing each above each sowing groove are arranged and fixed in parallel at a fixed position, a seed hopper is provided on the machine frame, and a plurality of hoses connected to the seed feeding section of the seed hopper are provided at the plurality of hoses. It has been proposed to connect to each of the seeding pipes, and to attach a soil cover plate for shaving the surface portion of the ridge to the plurality of seeding pipes via springs to cover the seeding grooves with soil.

[0003]

In the above structure, the seeding device is connected directly behind the towing vehicle, and the seeding device cannot be moved in the left-right direction. There are few problems in the case of the last step where seeding work is carried out by proceeding along the ridge on the opposite side of the first step to be performed, but there are few problems, but the ridge raising work and the sowing work are carried out while reciprocating from the first step to the last step. In this case, there is an unworked part where the ridge making work and the sowing work cannot be performed at the boundary with the previous stroke, and the ridge making work and the sowing work are continuously performed from the first stroke to the last stroke. There is a problem that you cannot do it.

The present invention has been made in view of the above-mentioned problems, and it is possible to continuously perform the ridge raising work and the sowing work while reciprocating from the first stroke to the last stroke, and at the boundary with the previous stroke. It is an object of the present invention to provide a seeding device capable of reliably preventing an unworked part in which a ridge work and a seeding work cannot be performed.

[0005]

A sowing apparatus of the present invention comprises a tilling mechanism section having a rotary tiller, a plurality of sowing grooves provided at the rear portion of the tilling mechanism section, and drainage at both sides of each sowing groove. A ridge forming member having a plurality of seeding openings for seeding each of the ridge forming member and each seeding groove formed by the ridge forming member, and the ridge forming mechanism unit in front and back of the cultivating member. A parallelogram link mechanism that is movably connected in the left-right direction via the left and right vertical shafts, and the parallelogram link mechanism that is connected between the front and rear parts at one diagonal position of this parallelogram link mechanism is variably adjusted. And a cylinder device for moving the ridge forming mechanism part in the left-right direction with respect to the tilling mechanism part.

[0006]

In the seeding device of the present invention, the cylinder device is used in the case of the last step of advancing the ridges and the like on the opposite side and the first step of advancing the ridges and the like to perform the sowing work. When the piston rod is expanded and contracted by actuation, the parallelogram link mechanism is horizontally rotated about the vertical axes of the front, rear, left and right, and the ridge forming mechanism connected to the parallelogram link mechanism is interlocked and horizontally moved. It Then, the left and right parallel links of this parallelogram link mechanism are changed to a state in which they are positioned in parallel rearward, and the ridge molding of the ridge forming mechanism moves to the position directly behind the rotary cultivator of the cultivating mechanism. To be done. When the operation of the cylinder device is stopped in this state, the ridge molding of the ridge forming mechanism is set at the position directly behind the rotary cultivating body of the cultivating mechanism, and the ridge forming body of the ridge forming mechanism is the first or last stroke. The work posture is set to prepare for.

Then, when the rotary tiller of the cultivating mechanism and the ridge molding of the ridge forming mechanism are driven to rotate,
The field is sequentially cultivated as the rotary cultivator rotates, and in this cultivated field, a plurality of shallow sowing grooves and deep drainage grooves are formed on both sides of each shallow sowing groove simultaneously due to the rotation of the ridge molding. It is formed sequentially. Also,
While rotating the rotary tillage and the ridge molding, the seeds are fed from each sowing port, so that the seeds are sequentially sown in each shallow seeding groove formed by the ridge molding.

Next, in the case of turning back from the first stroke to the second stroke, when the cylinder device is actuated to extend the piston rod, the parallelogram link mechanism is centered on the front, rear, left and right vertical axes with respect to the traveling direction. And is horizontally rotated toward the right side (front stroke side), and the ridge forming mechanism portion connected to the parallelogram link mechanism is interlocked and horizontally moved toward the right side. Then, the ridge molding of the ridge forming mechanism is offset to the right by one ridge from the position directly behind the rotary cultivating body of the cultivating mechanism, and when the operation of the cylinder device is stopped, the right side of the rotary cultivating body of the cultivating mechanism is The ridge forming body of the ridge forming mechanism is set at the position, and the right end of the ridge forming body of the second stroke is arranged at a position where it moves along the drainage groove of the ridge at the right end of the first stroke. It is installed and set in a work posture in preparation for the work of the second stroke.

Then, when the rotary tiller of the cultivating mechanism and the ridge molding of the ridge forming mechanism are driven to rotate,
In this rotary tillage and ridge molding, sowing work is performed in the same manner as in the above case, followed by each ridge in the first step, followed by forming work of each ridge in the second step and sowing work for each ridge. The work is not performed at the boundary between the first stroke and the second stroke. In this way, the reciprocating work is performed by sequentially returning to the last stroke.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of an embodiment of the present invention will be described below with reference to the drawings.

In the figure, reference numeral 1 denotes a machine frame, which has a main frame 2 which is long in the left-right direction, and the chain case 3 and an upper portion of a bracket 3a facing each other are integrally fixed to both ends of the main frame 2. The cultivating shaft 5 of the rotary cultivating body 4 is rotatably provided horizontally between the opposing lower ends of the chain case 3 and the bracket 3a. The rotary cultivator body 4 is configured by radially arranging a large number of cultivating claws 6 in the axial direction of a cultivating shaft 5. Further, a cover body 7 covering the upper part of the rotary tiller 4 is fixed between the opposing chain case 3 and bracket 3a, and the rear end of the cover body 7 is made of a plate-shaped elastic member. The ground leveling body 8 is fixed.

An input shaft 9 is provided at a substantially middle portion of the main frame 2.
Is provided so as to rotatably project toward the front, and an output shaft (not shown) of the mission 10 is provided with an interlocking medium (not shown) including a chain in the chain case 3 to The rotary tiller 4 is rotatably interlocked and connected. Further, lower arms 11 are provided on the front left and right portions of the main frame 2 so as to face each other, and upper arms 12 are provided on the upper part of the mission 10 so as to project forward. The upper arm 12 and the left and right lower arms 11 are not connected by stays 13, and connecting portions 14 are provided at the front end portions of the left and right lower arms 11 and the front end portions of the upper arm 12, respectively.

The machine frame 1 and the left and right lower arms 11
And a main frame 2 having an upper arm 12, a rotary tiller 4,
The tilling mechanism 15 is configured by the mission 10 having the input shaft 9.

Next, a ridge forming mechanism portion 17 is connected to the rear side portion of the main frame 2 via a variable connecting mechanism portion 16 which is displaceable in the left-right direction. The variable connection mechanism section 16 includes the main frame 2
Left and right connecting fittings 20 axially attached to the connecting rods 18 protruding from the left and right rear parts via vertical shafts 19 respectively.
And has a connecting rod 22 facing the left and right connecting fittings 20 and projecting from the front left and right portions of the connecting frame 21 that is long in the left and right direction of the ridge forming mechanism part 17 through the vertical shaft 23 in the left and right directions respectively. It has left and right connecting fittings 24 rotatably attached to the shaft, and between the left and right connecting fittings 20, 24 facing the front and back, the front and rear ends of a pair of upper and lower parallel links 25, 26 are supported by a support shaft 27. Each is pivotally mounted.

A pair of upper and lower parallel links of the left and right parts
In each of 25 and 26, a coil spring 28 is stretched between the support shafts 27 at one of the diagonal positions before and after the shafts are axially attached. It is supposed to support. Then, the main frame 2 of the cultivating mechanism section 15 and the ridge forming mechanism section
A parallelogram link mechanism 29 is constituted by 17 connecting frames 21, a pair of left and right upper and lower parallel links connecting these, and front, rear, left and right vertical shafts 19, 23. The front, rear, left and right connecting fittings 20, 24 are each formed in an L shape in a plan view, and one vertical plate 32 is connected to the front and rear end portions of the pair of upper and lower parallel links 25, 26. Insertion holes 33 through which the respective support shafts 27 are inserted are formed at the top and bottom, and the front and rear vertical shafts 19, 23 are provided at the upper and lower portions of the other vertical plate 34.
Supporting pieces 36 each having an insertion hole 35 through which each of them is inserted are provided so as to face each other. Also, the front, rear, left and right connecting fittings 20, 24
, The front and rear connecting fittings at one of the diagonal positions
Horizontal plates 79 are integrally formed at the lower ends of the vertical plates 32 of one of the 20 and 24, and vertical connecting shafts 80 are integrally projected downward from the lower surfaces of the horizontal plates 79. The connecting shaft 80 and the upper and lower insertion holes 33 on the connecting shaft 80 are provided on the same axis.

Further, in the parallelogram link mechanism 29, the front and rear connecting fittings 20 at the one diagonal position,
Among the 24 connecting shafts 80, the base end of the cylinder device 30 is connected to the universal joint on one of the connecting shafts 80 on the front side.
It is rotatably pivoted in the vertical and horizontal directions via 81, and the tip end of the piston rod 31 of the cylinder device 30 is vertically moved via a universal joint 82 on the other rear connecting shaft 80. It is rotatably pivoted both horizontally and horizontally. Then, the left and right vertical shafts 19 of the front part are expanded and contracted by the expansion and contraction of the piston rod 31 of the cylinder device 30.
The parallelogram link mechanism 29 is changed with the center of rotation as the center of rotation so that the ridge forming mechanism portion 17 is moved and displaced in the left-right direction with respect to the traveling direction.

Next, the ridge forming mechanism portion 17 has opposing brackets 37 having upper ends integrally fixed to both ends of the connecting frame 21, and a rotation is provided between the lower ends of the opposing brackets 37. A shaft 38 is rotatably provided horizontally, and a center portion of a groove molding body 39 for drainage groove molding formed in a large number of abacus beads having a large diameter in the axial direction is provided on the rotation shaft 38 at a predetermined interval. The center of the groove forming body 40 for seeding groove forming, which is integrally fixed and is formed in the rotating shaft 38 between each of the plurality of ridge forming bodies 39 in the axial direction in the form of a large number of abacus beads. The parts are fixed together. Then, the left and right large-diameter groove-formed bodies 39 and the small-diameter groove-formed body 40 between the large-diameter groove-formed bodies 39.
The ridge forming body 41 for forming the one ridge A is constituted by and the plurality of sets of ridge forming bodies 41 are continuously arranged in the axial direction of the rotary shaft 38. Plural rows of ridges A are continuously formed side by side.

An upper portion of a mission case 43 containing a mission 42 is fixed to a substantially middle portion of the coupling frame 21, and an input shaft 44 is rotatably projected forward at an upper end portion of the mission case 43. The lower end of the mission case 43 is rotatably supported by an intermediate portion of the rotary shaft 38. The rotary shaft 38 is connected to an output shaft of the mission 42 by an interlocking medium (not shown). ) Is rotatably linked through. In addition, in the front and rear portions of the lower end portion of the mission case 43, the large diameter groove molded bodies 39 are formed.
The groove forming portions 45 each having a cross-sectional shape substantially the same as that of the operating portion are integrally provided so as to project.

A support piece 46 is integrally provided on the lower side of the left and right brackets 37 so as to project rearward and integrally therewith.
Between the rear ends of the left and right support pieces 46, mounting pieces having an L-shaped cross section are provided.
47 are integrally fixed horizontally, and a large number of mounting holes 48 are vertically penetrated in the horizontal direction of the horizontal portion of the mounting piece 47 at positions corresponding to the small-diameter grooved bodies 40. Has been formed. Further, the upper end of a vertically elastically deformable support body 49 made of an elastic member such as a rubber plate is integrally fixed to the vertical portion of the mounting piece 47 by a plurality of bolts 51 via a holding piece 50. ing.

The support 49 has a large number of substantially triangular elastic support pieces 52 whose lower sides are contracted in parallel at the positions corresponding to the small-diameter groove moldings 40 in the left-right direction. At the lower end of each elastic support piece 52, the upper part of the soil covering body 53 that collapses the opposing inner wall shoulders of the upper part of the seeding groove B formed by the small diameter groove forming body 40 and covers the groove bottom C Are integrally fixed with a plurality of bolts and nuts 54. The soil covering body 53 is formed of a narrow plate-shaped soil covering metal fitting that is long in the vertical direction.

Next, a support frame 55 is integrally erected on the main frame 2 of the machine frame 1, and a seed hopper 56 containing seeds for sowing is supported on the support frame 55. The seed hopper 56 has a feeding portion 57 formed at the lower end portion, and the feeding portion 57 has the large number of mounting holes.
A large number of discharge ports 58 corresponding to the number of 48 are formed. One end of a hose 59 is connected to the discharge ports 58, and the other ends of the plurality of hoses 59 are connected to the plurality of attachments. The holes 48 are inserted into each of the holes 48 and protrude downward, and the sowing mouth bodies 60 are connected to the numerous hoses 59, respectively. Each of the sowing mouth bodies 60 is a hollow cylindrical shape, the connecting portion side of each hose 59 is thin and is formed to have a gradually increasing diameter toward the sowing mouth 61, and the sowing mouth 61 is substantially elliptical in the vertical direction. Is formed in.

In addition, one end of a support piece 62 is fixed to each of the sowing mouth bodies 60, and the other end of each of the support pieces 62 faces the sowing mouth 61 and the front side of the covering body 53. The seeding mouth bodies 60 and the soil covering bodies 53, which are fixed to the respective parts and face each other in the front and rear, are integrally connected.

Next, the operation of the above embodiment will be described.

The input shaft 9 of the mission 10 is connected to the three-point suspension mechanism of the tractor and the three-point connecting portion 14 of the machine frame 1 and is provided on the main frame 2 via the power transmission shaft to the PTO shaft of the tractor.
To connect. Further, the input shaft 44 of the mission 43 provided on the coupling frame 21 is connected to the output shaft 63 rotatably projected on the rear side of the mission 10 via the transmission shaft 64.

Next, in the case of the first step in which the ridges and the like are advanced to perform the sowing work and the last step in which the ridges and the like on the opposite side are advanced to perform the sowing work, the cylinder device 30 is operated. When the piston rod 31 is expanded or contracted, the front left and right vertical shafts 19
The parallelogram link mechanism 29 is variably rotated about the center and is horizontally rotated, and the ridge forming mechanism portion 17 connected to the parallelogram link mechanism 29 is interlocked and horizontally moved. And the left and right parallel links of this parallelogram link mechanism 29
25 and 26 are variable so as to be positioned parallel to the rear side, and the ridge molding 41 of the ridge molding mechanism 17 is cultivated.
It is moved to the position directly behind the rotary tiller 4 of 15. When the operation of the cylinder device 30 is stopped in this state, the ridge forming mechanism portion 17 is located at a position directly behind the rotary tiller 4 of the tiller mechanism portion 15.
The ridge molding 41 of the ridge molding mechanism section 17 is set.
Is set to a work posture prepared for the first stroke or the last stroke.

Next, the machine frame 1 is pulled by the tractor, and the input shafts 9 and 44 of the missions 10 and 43 are rotated by the output from the PTO shaft of the tractor. The rotary tiller 4 of the tiller mechanism 15 and each ridge molded body 41 of the ridge forming mechanism 17 are rotationally driven by the outputs from the missions 10 and 43. Then, as the rotary cultivator 4 advances in rotation, the field is sequentially cultivated, and in this cultivated field, the plurality of shallow seeding grooves B and both sides of the plurality of shallow seeding grooves B are added to the cultivated field due to the rotation of each ridge molding 41. Deep drainage grooves D are simultaneously formed in the portion at the same time. That is, in each of a plurality of sets of ridge moldings 41 arranged and fixed side by side in the axial direction of the rotary shaft 38, shallow seeding grooves B having a substantially V-shaped cross section are successively formed by the groove moldings 40 each having a small diameter. At the same time, deep drainage grooves D having a substantially V-shaped cross section are successively formed in the large-diameter groove moldings 39, and the ridges A are formed on the outer peripheral portion of the rotary shaft 38.
The surface portion of is shaped like a plane.

In this case, the small-diameter groove-forming bodies 40 and the large-diameter groove-forming bodies 39 are rotated at a rotational speed higher than the traveling speed through the rotary shaft 38, thereby forming the large- and small-sized groove forming bodies. The bodies 39 and 40 are slip-driven with respect to the tillable soil, and the shallow seeding groove B is formed by these large and small groove forming bodies 39 and 40.
In addition, the deep drainage groove D is surely and accurately formed into a substantially V-shaped cross section, and soil is prevented from adhering to the large and small groove formed bodies 39 and 40.

Further, while the rotary tiller 4 and the ridge molding 41 are rotationally driven, the seeds are sequentially fed out from the respective discharge ports 58 in the feeding portion 57 of the seed hopper 56, whereby the seeds are respectively fed to the hose 59 and the hose 59. Through the seeding mouths 60 connected to these hoses 59, seeds are successively sown from the respective seeding mouths 61 into the respective shallow seeding grooves B formed by the ridge moldings 41. In addition, the seed bottoms C on the seeds are sown while being sown in the respective sowing grooves B, and the upper side walls of the sowing grooves B after the sowing are destroyed by being sequentially scraped off by the respective soil cover bodies 53.
Will be covered with soil.

In this case, a sowing mouthpiece is provided on the front side of each covering body 53.
Since the sowing mouth 61 of 60 is attached, sowing and soil covering are continuously performed at the same advancing position, and the sowing mouth 61 is prevented from changing so as to be shaken in the vertical direction and the horizontal direction, and , The lower end of each soil cover 53 has its own sowing groove B
The seeds from the sowing mouth 61 are surely sown in the respective sowing grooves B by the guide action of moving along the upper side walls of the.

[0030] Further, each soil cover supporting each seeding opening 61
53 is fixed to each elastic support piece 52 of the support 49 that is elastically deformable in the vertical direction, so that each soil covering body 53 follows the change in the vertical direction of each ridge surface portion, and each seeding groove. The upper side wall of B can always be surely destroyed for covering the soil, and a large change in the amount of soil covering each groove bottom C can be prevented.

Further, the seeding mouth 61 of each sowing mouth body 60 is formed to have a substantially elliptical shape which is long in the up-down direction, so that the seeds discharged from each sowing mouth 61 toward the respective sowing grooves B. The seeds can be surely seeded in the seeding groove B without being scattered in the lateral direction.

Next, in the case of turning back from the first stroke to the second stroke, when the cylinder device 30 is operated and the piston rod 31 is extended, the parallelogram linkage mechanism 29 centering on the vertical shafts 19 on the left and right of the front part. Is varied and horizontally rotated toward the right side (forward stroke side) with respect to the traveling direction, and the ridge forming mechanism portion 17 connected to the parallelogram link mechanism 29 is interlocked and horizontally moved toward the right side. To be done. Then, each ridge forming body 41 of the ridge forming mechanism portion 17 is offset to the right by one ridge from the position directly behind the rotary tiller 4 of the cultivating mechanism portion 15 to form a large-diameter groove at the right end portion of the ridge forming body 41. When the body 39 is disposed in the drainage groove D at the right end portion in the previous stroke and the operation of the cylinder device 30 is stopped, each of the ridge forming mechanism parts 17 is located at the right side position of the rotary tiller body 4 of the tiller mechanism part 15. Ridge molding
41 is set, and the ridge molding 41 at the right end of the second stroke is set.
The large-diameter grooved body 39 at the right end of the first stroke is disposed at a position where it moves along the drainage groove D of the ridge A at the right end of the first stroke in the traveling direction, and the work posture is prepared for the second stroke. Is set to.

Then, when the rotary tiller 4 of the tiller mechanism section 15 and each ridged body 41 of the ridge forming mechanism section 17 are respectively driven to rotate, the rotary tiller 4 and each ridger shaped body 41 have the above-mentioned case. The seeding work is carried out in the same manner as the above, followed by the forming work of each ridge A in the second step and the seeding work for each ridge A continuously following each ridge A in the first stroke, and the first stroke and two strokes. There is no unworked part at the boundary with the eyes.
In this way, the reciprocating work is performed by sequentially returning to the last stroke.

Next, in the above-mentioned embodiment, the case where the tractor is moved straight along the previous stroke with the ridge forming mechanism 17 being offset in the left-right direction of the traveling direction in the work after the second stroke has been described. Without being limited to this, the ridge forming mechanism 17 is moved straight along the front stroke, and is automatically moved along the front stroke while automatically correcting the positional deviation in the left-right direction, and the work from the first stroke to the second stroke and thereafter is performed. May be continuously performed.

In this case, for example, as shown in FIGS. 6 and 7, the support arms 70 facing the left and right brackets 37 of the ridge forming mechanism 17 are integrally projected forward,
The upper portions of the suspension rods 71 are horizontally rotatably supported by the front ends of the left and right support arms 70, and the forked metal fittings 73 are vertically attached to the lower ends of the left and right suspension rods 71 via a horizontal shaft 72. The left and right bifurcated metal fittings 73 are rotatably pivoted in a direction, and are positioned in front of the large-diameter groove forming body 39 at both ends in the left and right direction of the ridge forming mechanism portion 17 and have an abacus guide shape. A roller 74 is rotatably mounted on a support shaft 75. An angle sensor 76 is attached to the upper ends of the left and right suspension rods 71. The left and right guide rollers 74 are arranged on the horizontal axis with respect to the respective hanging rods 71.
It is supported up and down around 72.

Further, between the connecting shafts 80 of the front and rear connecting fittings 20 and 24 at one diagonal position of the parallelogram link mechanism 29 connecting the ridge forming mechanism part 17, one of the connecting shafts 80 has an electric cylinder. The base end of the device 77 is rotatably pivoted vertically and horizontally via a universal joint, and the tip end of the piston rod 78 of the electric cylinder device 77 is connected to the universal joint on the other connecting shaft 80. A limit switch LS for switching the left and right angle sensors 76 is provided on the main body of the electric cylinder device 77, which is rotatably pivoted vertically and horizontally. Further, the electric cylinder device 77 is CP
Connected to U, this CPU has the left and right angle sensors
76 and the limit switch LS are respectively connected, and a switch unit having a manual and automatic changeover switch is connected to the CPU.

With this configuration, when the vehicle is turned back from the first stroke to the second stroke, the piston rod 78 of the electric cylinder unit 77 is output by the output from the CPU.
When the ridge forming mechanism 17 is extended, for example, the ridge forming mechanism portion 17 is offset to the right side on the front stroke side, and the large-diameter groove forming body 39 at the right end of the ridge forming body 41 and the right guide roller 74 are moved in the previous stroke. It is arranged in the drainage groove D at the right end of the electric cylinder device 77 and is stopped by the CPU. Also,
The automatic changeover switch of the switch unit is operated to turn on the angle sensor 76 of the right guide roller 74 and turn off the left angle sensor 76.

The rotary tiller 4 of the tiller mechanism section 15
As the ridge forming body 41 of the ridge forming mechanism portion 17 is driven while rotating, the large-diameter groove forming body 39 at the right end of the ridge forming body 41 and the right guide roller 74 are moved to the right end at the time of the previous stroke. The ridge-raising work and the sowing work of the second step are performed along the first stroke in the same manner as in the case of the above-described embodiment while rotating and advancing along the drainage groove D of the section. At this time, the tilling mechanism section 15 is advanced. When the guide roller 74 on the right side is displaced to the left in the direction, the guide roller 74 on the right side is horizontally rotated by the resistance of the side wall of the drainage groove D, and the horizontal rotation of the guide roller 74 is detected by the angle sensor 76. The detection signal of 76 is output to the CPU, and the electric cylinder device 77 is operated by the control signal from the CPU, the piston rod 78 is further extended, and the ridge forming portion 15 is displaced to the left in the traveling direction. Mechanical part 17 is right It is automatically moved to the side.

Therefore, the cultivating mechanism 15 is displaced to the left in the traveling direction, and the ridge forming mechanism 17 is automatically corrected to the right in the traveling direction, that is, the lateral displacement of the ridge forming mechanism 17 is automatically corrected. While making corrections, proceed straight along the previous stroke and the work from the first stroke to the second stroke and thereafter will be performed continuously. As in the first stroke and the last stroke, when the ridge forming mechanism section 17 is set directly behind the tilling mechanism section 15 by the operation of the electric cylinder device 77, the left and right angle sensors 76 are set to off respectively. , Electric cylinder device 77
Lock the operation of to the set position.

Further, both ends of the hydraulic cylinder device are respectively connected to the universal joints between the connecting shafts 80 of the front and rear connecting fittings 20 and 24 at one diagonal position of the parallelogram link mechanism 29 connecting the ridge forming mechanism part 17. Vertically rotatably and horizontally rotatably connected through the guide roller 74 and the large-diameter grooved body 39 at the right end on the front stroke side at the time of the second and subsequent strokes. It may be installed in the groove D, and the operation of the piston rod of the hydraulic cylinder device may be set in a free state. When the cultivating mechanism 15 is displaced in the left-right direction with respect to the traveling direction, the groove forming body 39 at the right end in the traveling direction receives the resistance of the side wall of the drainage groove D and the ridge forming mechanism 17 is automatically displaced. It is corrected to the opposite side of the direction, and the work after the second stroke is continuously performed.

[0041]

According to the present invention, the ridge forming mechanism portion is movably connected to the rear portion of the tilling mechanism portion through the parallelogram link mechanism so as to be movable in the left and right directions. Since a cylinder device for variably adjusting the parallelogram mechanism between the front and rear parts in the diagonal position to move the ridge forming mechanism part in the left and right direction is connected, the cylinder device is operated to operate the ridge through the parallelogram link mechanism. By setting the forming mechanism to move right behind or to the left or right of the tilling mechanism, it is possible to perform continuous ridge making work and sowing work while reciprocating from the first stroke to the last stroke. It is possible to reliably prevent the occurrence of an unworked portion where the ridge and the seeding work cannot be performed at the boundary with the.

[Brief description of drawings]

FIG. 1 is a side view of a seeding device showing an embodiment of the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a plan view of the parallelogram link mechanism of the above.

FIG. 4 is a perspective view of the same coupling member.

FIG. 5 is a perspective view showing the same seeding state.

FIG. 6 is a plan view of a seeding device showing another embodiment.

FIG. 7 is a front view showing a traveling state of the same guide roller.

[Explanation of symbols]

 4 Rotary tiller 15 Tiller mechanism 17 Ridge forming mechanism 19 Vertical axis 23 Vertical axis 29 Parallelogram link mechanism 30 Cylinder device 39 Groove forming body 40 Groove forming body 41 Ridge forming body 56 Seed hopper 61 Seeding mouth B Seeding groove D Drain

Claims (1)

Claims: 1. A tilling mechanism portion having a rotary tiller,
A plurality of seeding grooves provided in the rear part of this tilling mechanism part and a ridge molded body that forms drainage grooves on both sides of each seeding groove, respectively, and each seeding groove formed by this ridge molded body A ridge forming mechanism having a plurality of seeding openings, a parallelogram link mechanism in which the ridge forming mechanism is connected to the cultivating mechanism movably in the left and right directions via front, rear, left and right vertical shafts, and the parallelogram. And a cylinder device that is connected between the front and rear parts at one diagonal position of the link mechanism and variably adjusts the parallelogram link mechanism to move the ridge forming mechanism part in the left-right direction with respect to the tilling mechanism part. A seeding device characterized by the above.