JP2019083795A - Rice transplanter - Google Patents

Abstract

To provide a rice transplanter capable of fitting a guide rail to a guide-rail stay without being deviated from a prescribed position in a machine body cross direction.SOLUTION: In a rice transplanter including a guide rail 131 for guiding a seedling mat on a seedling loading table in a longitudinal direction, and a guide-rail stay 132 for supporting the guide rail 131 from below, and performing lift adjustment of the guide rail 131 by moving vertically, the guide rail 131 has a movement regulation part 132b surface-contacted with a rear end face 132b of the guide-rail stay 132, for regulating movement of the guide-rail stay 132 in a direction orthogonal to the movement direction X.SELECTED DRAWING: Figure 8

Description

  The present invention is a rice transplanter provided with a guide rail for guiding the seedling mat on the seedling platform in the lateral direction, and a guide rail stay for supporting the guide rail from below and moving the guide rail up and down to move up and down. About.

  The rice planter cuts and holds one seedling from the seedling mat with the planting claws while reciprocating the seedling mat on the seedling platform along the guide rails in the left-right direction, so as to plant it on the field.

  Patent Document 1 listed below describes a guide rail and a guide rail stay that raises and lowers the guide rail. In Patent Document 1, the guide rail is mounted on the guide rail stay and then fixed with a bolt, but when the guide rail is mounted, the corner of the lower surface of the guide rail and the corner of the upper surface of the guide rail stay Positioning is performed when the parts abut.

JP, 2017-136008, A

  In Patent Document 1, the surface on which the guide rail abuts on the guide rail stay is only the lower surface supported by the guide rail stay, and the sectional shape of the guide rail is separated from the corner of the lower surface from the guide rail stay to the rear of the machine body There is a gap between the guide rail and the guide rail stay. Therefore, if the guide rails are fastened by bolts in a state of being displaced from the guide rail stays before fastening, the positional deviation is kept rising, and the amount of seedlings taken by one plant by the planting claws is changed.

  Then, an object of the present invention is to provide a rice transplanter which can attach a guide rail to a guide rail stay, without shifting from a predetermined position in a machine longitudinal direction in view of the above-mentioned subject.

The rice transplanter according to the present invention has a guide rail for guiding the seedling mat on the seedling platform in the lateral direction,
A guide rail stay for supporting the guide rail from below and moving the guide rail up and down by moving up and down;
The guide rail is in surface contact with a part of the guide rail stay and has a movement restricting portion which restricts movement of the guide rail stay in a direction orthogonal to the movement direction.

  According to this configuration, when the movement restricting portion is in surface contact with a part of the guide rail stay, the guide rail can be prevented from moving in the direction orthogonal to the movement direction of the guide rail stay, so the machine longitudinal direction The guide rail can be attached to the guide rail stay without being displaced from the predetermined position.

  In the present invention, the guide rail may be capable of moving the guide rail stay in the moving direction when the movement restricting portion is in surface contact with the guide rail stay.

  According to this configuration, since the guide rail can be brought close to the guide rail stay in a state where the movement restricting portion is in contact with the guide rail stay at the time of mounting, the mounting becomes easy.

  The rice transplanter according to the present invention includes a spacer which can be disposed between the guide rail and the guide rail stay, and the movement restricting portion makes surface contact with the guide rail stay even when the spacer is disposed. May be.

  According to this configuration, even when the spacer is disposed and the height of the guide rail is raised, the movement restricting portion can be in surface contact with the guide rail stay to restrict the movement of the guide rail.

  In the rice transplanter of the present invention, the movement restricting portion may be longer than the length of the spacer in the movement direction of the guide rail stay.

  According to this configuration, even in the state where the spacer is disposed, the movement restricting portion reliably contacts the guide rail stay.

  In the present invention, the movement restricting portion may have an abutting surface which is in surface contact with the rear end surface of the guide rail stay and extends along the moving direction of the guide rail stay.

  According to this configuration, since the guide rail can be brought close to the guide rail stay in a state where the movement restricting portion is in contact with the guide rail stay at the time of mounting, the mounting becomes easy.

It is a left view of a rice transplanter in an embodiment. It is a top view of a rice transplanter in an embodiment. It is a left view of a seedling planting apparatus. It is a front view of a seedling planting apparatus. It is a top view of a seedling planting apparatus. It is the perspective view which looked at the guide rail and guide rail stay from the downward direction. It is sectional drawing for demonstrating adjustment of a seedling taking quantity. It is the figure which expanded a part of sectional drawing of FIG. It is sectional drawing of seedling amount adjustment which concerns on other embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the left side is simply referred to as the left side in the traveling direction of the traveling vehicle body 2 (left direction in FIG. 1), and the right side is simply referred to as the right side in the traveling direction.

  First, with reference to FIG. 1 and FIG. 2, a schematic structure of the row planting type rice transplanter 1 will be described. The rice transplanter 1 includes a traveling body 2, a pair of left and right front wheels 3 and a pair of left and right rear wheels 4 that support the traveling body 2, and an engine 5 mounted on the front of the traveling body 2. The power from the engine 5 is transmitted to the rear transmission case 6 to drive the front wheel 3 and the rear wheel 4 so that the traveling body 2 travels forward and backward. A front axle case 7 projects left and right sides of the transmission case 6, and a front wheel 3 is steerably attached to a front axle extending outward from the front axle case 7 in the left and right direction. The cylindrical frame 8 projects to the rear of the transmission case 6, the rear axle case 9 is fixed to the rear end side of the cylindrical frame 8, and the rear wheel 4 is attached to the rear axle extending outward from the rear axle case 9 There is.

  As shown in FIG. 1 and FIG. 2, on the upper surface side of the front part and the central part of the traveling airframe 2, a work step (car body cover) 10 for carrying an operator is provided. A front bonnet 11 is disposed above the front of the work step 10, and an engine 5 is installed inside the front bonnet 11. A traveling shift pedal 12 for stepping operation is disposed on the rear side of the front bonnet 11 in the upper surface of the work step 10.

  Further, the driving operation unit 13 on the rear upper surface side of the front bonnet 11 is provided with a steering handle 14, a traveling main shift lever 15, and a work lever 16 as an elevating operation tool. A steering seat 18 is disposed behind the front bonnet 11 of the upper surface of the work step 10 via a seat frame 17. In addition, right and left sides of the front bonnet 11 are provided with left and right spare seedling mounts 24 across the work step 10.

  A link frame 19 is erected at the rear end of the traveling body 2. A seedling planting apparatus 23 for eight-row planting is vertically movably connected to the link frame 19 via a lifting link mechanism 22 including a lower link 20 and a top link 21. In this case, a hitch bracket 38 is provided on the front side of the seedling planting device 23 via a rolling fulcrum shaft 142 (see FIG. 4). By connecting the hitch bracket 38 to the rear side of the lifting link mechanism 22, the seedling planting device 23 is arranged to be able to move up and down in the rear of the traveling machine body 2. The cylinder base end side of the hydraulic elevating cylinder 39 is vertically rotatably supported at the upper rear portion of the cylindrical frame 8. The rod tip end side of the elevating cylinder 39 is connected to the lower link 20. As a result of rotating the elevating link mechanism 22 up and down by the expansion and contraction movement of the elevating cylinder 39, the seedling planting device 23 moves up and down. The seedling planting device 23 is configured to be rotatable around the rolling fulcrum shaft 142 so as to be able to change the inclined posture in the left-right direction.

  The operator gets on the work step 10 from the getting on and off step 25 on the side of the work step 10 and drives the seedling planting device 23 to move the planting plant in the field while moving in the field by driving operation. Perform work (rice planting work). In the seedling planting operation, the operator replenishes the seedling mat on the spare seedling loading stand 24 to the seedling planting device 23 as needed.

  As shown in FIGS. 1 and 2, the seedling planting device 23 includes a planting input case 26 to which power is transmitted from the engine 5 via the transmission case 6, and four sets for Yazo connected to the planting input case 26. Planting transmission case 27 (one set of two lines), seedling planting mechanism 28 provided on the rear end side of each planting transmission case 27, seedling table 29 for eight-row planting, and each planting transmission case 27 And a float 32 for leveling of the surface arranged on the lower side of The seedling planting mechanism 28 is provided with a rotary case 31 having two planting claws 30 for one row. Two rows of rotary cases 31 are disposed in the planting transmission case 27. By one rotation of the rotary case 31, two planting claws 30 cut and hold a single seedling each and plant it on the field surface leveled with the float 32. On the front side of the seedling planting device 23, there is provided a leveling rotor 85 for raising and lowering the leveling scene (for leveling).

  Side markers 33 are provided on the left and right sides of the seedling planting device 23. The side marker 33 has a marker wheel body 34 for muscle pulling and a marker arm 35 for rotatably supporting the marker wheel body 34. The proximal end side of each marker arm 35 is pivotally supported on the left and right outer sides of the seedling planting device 23 so as to be able to rotate left and right. The side marker 33, based on the operation of the work lever 16 in the driving operation unit 13, lands a locus serving as a reference in the next step on the field and forms a working posture, and raises the marker wheel 34 to separate from the field It is configured to be pivotable to the non-working posture.

  Next, the configuration of the seedling planting device 23 will be described with reference to FIGS. 3 to 5. The seedling planting apparatus 23 is provided with a planting frame 111 that connects between the front ends of four sets of planting transmission cases 27 for Yachijo. The planting frame 111 is extended in the left-right direction. A planting input case 26 is attached to the center of the planting frame 111. The planting input case 26 includes a horizontal feed shaft of a seedling horizontal feed mechanism 79 for laterally feeding the seedling platform 29 in the left-right direction, and a longitudinal length of a seedling vertical feed mechanism 80 for longitudinally feeding seedlings on the seedling platform 29. The feed drive shaft 80a and the planting output shaft 81 of the seedling planting mechanism 28 are rotated.

  A seedling horizontal feed mechanism 79 and a seedling vertical feed mechanism 80 are connected to the planting input case 26. The feed body 79a of the seedling lateral feed mechanism 79 is connected to the lower surface side of the rear surface of the seedling platform 29, and moves the seedling platform 29 laterally in the lateral width direction along the upper rail 151 and the lower rail 152. For this reason, the seedling mat on the seedling loading stand 29 is continuously reciprocated and transversely conveyed. On the other hand, a pair of vertical feed drive cams 80 b is fixed to the vertical feed drive shaft 80 a of the seedling vertical feed mechanism 80. When the seedling platform 29 reaches the end of reciprocation (the return point of the reciprocation), each longitudinal feed drive cam 80b is rotationally driven by the longitudinal feed drive shaft 80a. At this time, the drive cam 80b is in contact with the driven cam 153, whereby the seedling vertical feed belt 155 is driven, and the seedling mat on the seedling mount 29 is intermittently fed longitudinally for transportation (see FIG. 7). The seedling take-up interlocking cam 138 fixed to the seedling taking adjustment shaft 136 and the driven cam 153 attached to the vertical feed roller shaft 154 are connected via the interlocking wire 156, so that the seedling longitudinal feed is made The amount is also changed, and appropriate seedling vertical feeding is performed according to the seedling removal amount.

  Further, as shown in FIGS. 6 and 7, the seedling planting device 23 has a guide rail 131 at the lower end of the seedling platform 29 and a guide rail stay 132 which adjusts the seedling amount by moving the guide rail 131 up and down. And are provided. The guide rail stay 132 is fixed to the upper portion of the round rod-like guide rod 134. The guide rod 134 is vertically movably supported by a guide member 133 bolted to the planting transmission case 27. The base end of the seedling taking control cam 135 is fixed to the seedling taking adjusting shaft 136 extended in the left-right direction. The tip of the seedling taking adjustment cam 135 is inserted into the guide rail stay 132. Further, the proximal end of the seedling taking adjustment member 137 is fixed to the seedling taking adjustment shaft 136. The seedling taking adjustment member 137 is positionally adjusted via the connection member 139 by the seedling taking adjustment actuator mechanism 161 (see FIG. 5), whereby the guide rail 131, guide via the seedling taking adjustment shaft 136 and the seedling taking adjustment cam 135 The rail stay 132 and the guide rod 134 are vertically moved to adjust the amount of seedlings for one strain to be taken out by the planting claw 30. The seedling taking adjustment shaft 136 is rotatably supported by bearing plates fixed on the top of the planting transmission case 27.

  The details of the guide rail 131 and the guide rail stay 132 will be described with reference to FIG. The guide rail 131 guides the lower end of the seedling mat which is moved in the left-right direction by the seedling stand 29 which is laterally fed in the left-right direction. The guide rail stay 132 supports the guide rail 131 from the lower side, and moves the guide rail 131 up and down by moving up and down. The guide rail stay 132 is configured by bending a plate-like member, and supports the guide rail 131 at the upper plate portion. An upper end surface 132 a of the guide rail stay 132 is fixed to a lower surface 131 a of the guide rail 131 by a bolt 130.

  As shown in FIG. 6, the bolt 130 and the guide rod 134 are arranged side by side in the left-right direction with respect to the guide rail stay 132. Therefore, in the conventional structure (for example, Patent Document 1), if the fastening by the bolt 130 is insufficient, the guide rail 131 is pivoted with respect to the guide rail stay 132 about the bolt 130. In addition to this, the guide rail stay 132 rotates with respect to the guide member 133 about the round rod-like guide rod 134. As a result, the guide rail 131 may be displaced from the predetermined position in the longitudinal direction of the machine with respect to the guide member 133.

  The guide rail 131 according to the present invention has a movement restricting portion 131 b which is in surface contact with a part of the guide rail stay 132 and restricts the movement of the guide rail stay 132 in the direction orthogonal to the movement direction X. Here, the moving direction X of the guide rail stay 132 is the direction in which the guide rod 134 slides with respect to the guide member 133, in other words, the axial direction of the guide rod 134. The movement restricting portion 131 b is in surface contact with the rear end surface 132 b of the upper portion of the guide rail stay 132 and has an abutting surface extending along the moving direction X of the guide rail stay 132. Thus, when the movement restricting portion 131 b is in surface contact with the rear end surface 132 b of the guide rail stay 132, the guide rail 131 allows the movement of the guide rail stay 132 in the movement direction X. Since the guide rail 131 does not rotate with respect to the guide rail stay 132 by having the movement restricting portion 131 b, the guide rail 131 can be prevented from moving in the longitudinal direction of the machine, and as a result, the machine body The guide rail 131 can be attached to the guide rail stay 132 without being displaced from the predetermined position in the front-rear direction.

  Further, as shown in FIG. 9, a spacer 140 may be provided between the lower surface 131 a of the guide rail 131 and the upper end surface 132 a of the guide rail stay 132. Spacer 140 is bolted to lower surface 131 a of guide rail 131. A bolt for fastening the spacer 140 is disposed on the side of the guide rail stay 132. By providing the spacer 140, it is possible to increase the height of the guide rail 131 and reduce the amount of seedlings for one strain taken out by the planting claw 30 without changing the other settings. In the moving direction X of the guide rail stay 132, the movement restricting portion 131b is longer than the length (thickness) of the spacer 140. As a result, as shown in FIG. 9, the movement restricting portion 131 b is in surface contact with the rear end surface 132 b of the guide rail stay 132 even when the spacer 140 is disposed and the height of the guide rail 131 is raised. The length (thickness) of the spacer 140 is, for example, 3 mm. The length of the movement restricting portion 131 b is, for example, 5 mm or more. The movement restricting portion 131 b is preferably longer by 2 mm or more than the length of the spacer 140.

  As mentioned above, although embodiment of this invention was described based on drawing, it should be thought that a specific structure is not limited to these embodiment. The scope of the present invention is indicated not only by the description of the embodiments described above but also by the claims, and further includes all modifications within the meaning and scope equivalent to the claims.

DESCRIPTION OF SYMBOLS 1 Rice transplanter 2 Traveling vehicle body 131 Guide rail 131a Guide rail lower surface 131b Movement control part 132 Guide rail stay 132a Upper surface of guide rail stay 132b Rear surface of guide rail stay 134 Guide rod 140 Spacer seat

Claims (5)

Guide rails for guiding the seedling mat on the seedling platform in the left-right direction,
A guide rail stay for supporting the guide rail from below and moving the guide rail up and down by moving up and down;
The rice transplanter according to claim 1, wherein the guide rail is in surface contact with a part of the guide rail stay and has a movement restricting portion that restricts movement of the guide rail stay in a direction perpendicular to the movement direction.   The rice transplanter according to claim 1, wherein the guide rail is capable of moving the guide rail stay in the moving direction when the movement restricting portion is in surface contact with the guide rail stay. A spacer which can be disposed between the guide rail and the guide rail stay;
The rice transplanter according to claim 1, wherein the movement restricting part is in surface contact with the guide rail stay even in a state where the spacer is disposed.   The rice transplanter according to claim 3, wherein the movement restricting portion is longer than the length of the spacer in the movement direction of the guide rail stay. The rice planter according to claim 1, wherein the movement restricting portion has an abutment surface which is in surface contact with a rear end surface of the guide rail stay and extends along a movement direction of the guide rail stay.

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