JP2012105596A - Device for supporting seedling rack in rice transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate maintenance of a lower shoe member in a device for supporting a seedling rack constructed by fitting the lower shoe member 17 attached to the lower rear surface of the seedling rack 15 and having a downward U-shaped cross-sectional shape to a lower rail 18 attached to a support frame 11 in a rice transplanter in a laterally extending manner, while fitting an upper shoe member 21 provided at the support frame into a guide rail 19 attached to the upper rear surface of the seedling rack and having a downward U-shaped cross-sectional shape.SOLUTION: The upper shoe member 21 is constructed to vertically move by a lift mechanism provided at the support frame 11.

Description

  The present invention relates to an apparatus for supporting a seedling platform in a rice transplanter so as to be laterally movable with respect to the machine body.

  Conventionally, a support device for a seedling platform in a rice transplanter, for example, as described in Patent Document 1 and the like, while attaching a lower shoe member formed in a U-shaped section downward to the bottom of the back surface of the seedling platform, A guide rail having a U-shaped cross-section extending in the lateral direction is attached to the upper part of the rear surface of the seedling stand, and the lower shoe member is attached to the lower rail attached to the support frame side such as a transmission case. The upper shoe member, which is fitted so as to slide freely in the longitudinal direction of the guide rail and protrudes upward to the support frame side in the guide rail, slides freely in the longitudinal direction of the guide rail. By inserting it so as to move, the seedling stage is supported so as to be laterally movable left and right.

JP 2000-041429 A

  Since the conventional support device for the seedling platform has the above-described configuration, a large portion of the weight of the seedling platform is not formed on the lower shoe member having a U-shaped cross-section that is attached to the lower back of the seedling platform. Due to the action of the portion, the lower shoe member portion has a frictional portion at the sliding portion between the lower shoe member and the lower rail to which the lower shoe member is fitted, or smooth sliding. Therefore, it is necessary to regularly perform maintenance such as replenishing lubricating oil (grease) or cleaning this sliding part. It required time and time.

  An object of the present invention is to make it extremely easy to perform maintenance such as replenishment of lubricating oil and replacement of parts for the lower shoe member and the lower rail.

In order to achieve this technical problem, claim 1
“A lower shoe member that slidably guides and supports the seedling stand along a lower rail that is attached to the support frame of the rice transplanter so as to extend laterally, and a guide rail that is attached to the upper back of the seedling stand. In the support device for the seedling platform, the upper shoe member provided on the support frame so as to be slidably fitted,
The upper shoe member is configured to move up and down by a shoe lifting mechanism provided on the support frame. "
It is characterized by that.

Claim 2
“In the first aspect of the present invention, the upper shoe members are plurally arranged at appropriate intervals along the longitudinal direction of the guide rail, and at least two upper shoe members among the upper shoe members are It was configured to move up and down by the shoe lifting mechanism. "
It is characterized by that.

Claim 3
“In the first or second aspect of the invention, the upper and lower movements of the upper shoe member are moved upward and downward with respect to the leveling mechanism for leveling the farm scene in front of the seedling platform. It was detachably connected as it did. "
It is characterized by that.

Furthermore, claim 4
“In any one of claims 1 to 3, the shoe lifting mechanism is provided with a locking means for holding the shoe lifting mechanism in the raising operation position.”
It is characterized by that.

  2. The lower part which raises the upper shoe member attached to the support frame side in the seedling planting device by the shoe lifting mechanism to lift the whole seedling stage and guides and supports the seedling stage. Since the shoe member moves away from the lower rail where it fits, maintenance such as lubrication (grease) replenishment and cleaning for the sliding part between them can be done extremely easily, and parts can be replaced very easily. The labor and time required for these can be greatly reduced.

  Next, according to claim 2, the seedling stage can be lifted by the at least two upper shoe members among the plurality of upper shoe members under a state in which the inclination to the left and right is reduced. Other upper shoe members except for at least two upper shoe members among the plurality of upper shoe members can be separated from the guide rails into which the upper shoe members are fitted, so that maintenance and component replacement for the other upper shoe members can be performed extremely easily. be able to.

  According to a third aspect of the present invention, the raising of the seedling stage by the raising operation of the upper shoe member can be performed by the lifting / lowering operation mechanism with respect to the leveling mechanism. Can be shared and the cost can be reduced.

  Furthermore, according to claim 4, when the seedling stage is lifted by the raising operation of the upper shoe member, the lifted state can be held by the locking means. Etc. can be performed safely.

It is a side view of a riding type rice transplanter. It is a top view of FIG. It is an enlarged view of the seedling planting apparatus in FIG. FIG. 4 is a side view taken along the line IV-IV in FIG. 3. FIG. 5 is an enlarged sectional view taken along line VV in FIG. 4. FIG. 6 is an enlarged sectional view taken along line VI-VI in FIG. 4. It is a figure which shows the upper shoe member and shoe raising / lowering mechanism in a seedling planting apparatus. FIG. 8 is a perspective view of FIG. 7. It is IX-IX view sectional drawing of FIG. FIG. 10 is a cross-sectional view taken along the line XX in FIGS. 8 and 9. FIG. 10 is a cross-sectional view taken along the line XI-XI in FIGS. 8 and 9. It is a figure which shows the state which lifted the seedling stand. It is a principal part enlarged view of FIG.

  Hereinafter, drawings (FIGS. 1 to 13) when an embodiment of the present invention is applied to a riding type rice transplanter will be described.

  In these drawings, reference numeral 1 denotes a riding type rice transplanter. The riding type rice transplanter 1 includes a traveling vehicle body 2 and a seedling planting device 3 (8 in the embodiment) detachably connected to the rear portion of the traveling vehicle body 2. For planting).

  The traveling vehicle body 2 is supported by the left and right front wheels 4 and the left and right rear wheels 5, and the front wheels 4 and the rear wheels 5 are driven or the rear wheels 5 are driven by the engine 6 mounted on all of them. Is configured to travel forward or backward.

  The traveling vehicle body 2 is provided with a control seat 7 and a steering handle 8, and a lifting mechanism 9 is provided at a rear portion of the traveling vehicle body 2 at a central portion in the front-rear direction in the plan view of the traveling vehicle body 2. The seedling planting device 3 is detachably connected to the hitch member 10 at the rear end of the lifting mechanism 9, and the seedling planting device 3 is lifted and lowered by the lifting mechanism 9.

  The seedling planting device 3 includes a transmission case 12 constituting a part of the support frame 11, a plurality (eight) planting mechanisms 13 provided at appropriate intervals in the lateral direction at the rear end thereof, and the planting mechanisms 13. A plurality of floats 14 arranged side by side on the lower side and a seedling stage 15 provided on the upper side of the transmission case 14 in the support frame 11.

  The transmission case 12 inputs the power of the engine 6 in the traveling vehicle body 2 via the first PTO shaft 16 to drive each planting mechanism 13 and drive the seedling table 15 in the lateral direction. And so on.

  As shown in FIG. 5, a lower shoe member 17 having a U-shaped cross section is attached to the lower part of the rear surface of the seedling mount 15. The lower shoe member 17 is fitted on a lower rail 18 attached to the upper surface of the transmission case 12 constituting a part of the support frame 11 so as to extend in the lateral direction so as to freely slide in the longitudinal direction. ing. By the slidable fitting of the lower shoe member 17 and the lower rail 18, the seedling mounting table 15 is supported so as to be movable in the lateral direction.

  As shown in FIG. 5, the lower shoe member 17 is composed of a grooved rail 17a made of metal such as aluminum and a shoe 17b made of synthetic resin loaded in the grooved rail 17a. Further, a stopper 19 for preventing the lower shoe member 17 from coming off the lower rail 18 is detachably attached to the lower rail 18 by fastening bolts 20.

  On the other hand, a guide rail 21 having a U-shaped cross-section facing downward is attached to the back surface of the upper part of the seedling table 15 so as to extend in the lateral direction, while the back surface of the seedling table 15 from the transmission case 12 of the support frame 11. A plurality of (four) upper shoe members 23a, 23b, 23c, and 23d are attached to the upper end of the gate-type frame 22 erected along the horizontal direction at appropriate intervals in the lateral direction, and each upper shoe member 23a, 23b, 23c, and 23d are inserted into the guide rail 21 so as to slide freely in the longitudinal direction of the guide rail 21, so that the upper part of the seedling stage 15 can be moved in the lateral direction. I support it.

  Further, the seedling planting device 3 is provided with a rotating roller type leveling mechanism 24 for leveling the field scene at a portion between the seedling planting device 3 and the rear wheel 5 in the traveling vehicle body 2. The rotary roller leveling mechanism 24 is configured to be rotationally driven by inputting the power of the engine 6 in the traveling vehicle body 2 through the second PTO shaft 25.

  Further, the leveling mechanism 24 is provided with a plurality of arms 27 projecting backward from a horizontal shaft 26 pivotally supported at a substantially middle portion of the support frame 11 in the height direction of the portal frame 22 via link rods 28. The horizontal shaft 26 is rotated by an elevating operation lever 29 so as to be raised and lowered with respect to the farm scene.

  That is, the horizontal shaft 26, the arm 27, the link rod 28, the lifting operation lever 29, and the like constitute a lifting operation mechanism 30 for the leveling mechanism 24. The lifting operation lever 29 in the lifting operation mechanism 30 includes a plurality of lifting operation levers 29. When the leveling mechanism 24 is set to a predetermined height position with respect to the field scene, the position holding member 31 having a notch is configured to be detachably held at the operation position.

  Of the plurality of upper shoe members 23a, 23b, 23c, 23d, two upper shoe members 23a, 23d located on the left and right sides are attached to the portal frame 22 so as not to move up and down. At least two central upper shoe members 23b and 23c located between the upper shoe members 23a and 23d are formed on the portal frame 22 along the back surface of the seedling stage 15 by the shoe lifting / lowering mechanism 32 in each. Installed to move up and down.

  The shoe elevating mechanism 32 is configured as shown in FIGS.

  That is, the shoe elevating mechanism 32 has a U-shaped fixed bracket 33 fixed to the portal frame 22 by welding or the like, a movable bracket 34 to which the central upper shoe members 23b and 23c are attached, An operation lever 35 pivotally attached to a fixed bracket 33 by a pivot pin 36 is provided. The movable bracket 34 is fastened inside the fixed bracket 33 by a pair of upper and lower bolts 37a and 37b. ing.

  In this case, the lower bolt 37b of the pair of bolts 37a, 37b is fitted in a long groove bolt hole 38 formed in the movable bracket 34 so as to extend substantially parallel to the seedling mounting table 15, A pivot pin 36 in the operation lever 35 is fitted in a guide groove hole 39 formed in the movable bracket 34 so as to extend in parallel with the long groove bolt hole 38, and removes the upper bolt 37 a, The bolt 37b is loosened or removed, and the bolt 20 of the stopper 19 with respect to the lower shoe member 17 is loosened or removed as shown by a two-dot chain line in FIG. The long groove bolt hole 38 and the guide groove hole 39 are guided to move up and down along the seedling mount 15.

  In addition to this, the tip of the operation lever 35 is detachably connected to the movable bracket 34 by a connecting bolt 40, so that the movable bracket 35 can be rotated by rotating the operation lever 35. 34 is configured to move up and down.

  That is, while removing the upper bolt 37a, loosening or removing the lower bolt 37b, loosening or removing the bolt 20 of the stopper 19, and rotating the operation lever 35, the seedling mounting Of the plurality of upper shoe members 23a, 23b, 23c, and 23d that support the upper portion of the table 15, at least two upper shoe members 23b and 23c located at the center are configured to move upward.

  The entire seedling stage 15 is supported by the two upper shoe members 23b and 23c located at the center so as not to be greatly tilted left and right by the downward rotation of the operation lever 35. , As shown in FIGS. 12 and 13.

  Since the lower shoe member 17 in the lower part is separated from the lower rail 18 in which the seedling stage 15 is lifted by the lifting of the seedling stage 15 as a whole, the lubricating oil (grease) can be supplied and cleaned to the sliding part in the meantime. At the same time, parts can be replaced.

  At the same time, among the plurality of upper shoe members 23a, 23b, 23c, 23d, the upper shoe members 23a, 23d positioned on the left and right sides are separated from the guide rail 21 into which the upper shoe members 23a, 23d are fitted. Maintenance and parts replacement for the upper shoe members 23a and 23d located can also be performed.

  Further, between the operation lever 35 and the fixed bracket 33, there is provided locking means for holding the shoe lifting mechanism 32 in the raising operation position.

  That is, in a state where the seedling table 15 is lifted by turning the operation lever 35 downward, the lock pin hole 41 in the operation lever 35 coincides with the lock pin hole 42 in the fixed bracket 33, By inserting the lock pin 43 across the lock pin holes 41, 42, the seedling mount 15 is held in a lifted state.

  When the various operations described above are completed, the upper lever members 23b and 23c located in the center are moved downward by rotating the operation lever 35 downward after the lock pin 43 is pulled out. The seedling stage 15 can be returned to the original position, and thereafter, the predetermined work is completed by fastening the pair of bolts 37a and 37b and fastening the bolt 20 of the stopper 19.

  Next, in the present embodiment, the operation lever 35 in the shoe elevating mechanism 32 is detachably connected to the elevating operation mechanism 30 in the leveling mechanism 24 via the interlocking link 44 and the detachable pin 45. It is configured as follows.

  That is, when only the leveling mechanism 24 is moved up and down by the lifting operation lever 29 in the lifting operation mechanism 30, the pin 45 that connects the operation lever 35 in the shoe lifting mechanism 32 and the interlocking link 44 is removed. Yes.

  In contrast, the operation lever 35 in the shoe elevating mechanism 32 and the interlocking link 44 are connected to each other by a pin 45 so that the seedling stage 15 is lifted by the operation lever 35 in the shoe elevating mechanism 32. Can be performed by the elevating operation lever 29 in the elevating operation mechanism 30 with respect to the leveling mechanism 24.

  In the above-described embodiment, the shoe raising / lowering mechanism 32 raises the two 23b and 23c located in the center among the plurality of upper shoe members 23a, 23b, 23c, and 23d. However, the present invention is not limited to this, is the two upper shoe members 23a, 23b, 23c, and 23d out of two upper positions 23a and 23d that are positioned on the left and right sides are operated by the shoe elevating mechanism 32? Alternatively, any two of the plurality of upper shoe members 23a, 23b, 23c, and 23d can be configured to be lifted by the shoe lifting mechanism 32.

  Further, the upper shoe member that can be lifted may be only one if it has a structure that supports the center of the lateral width (also referred to as the center of gravity) of the seedling mount 15. Furthermore, the shoe elevating mechanism 32 is not limited to the configuration of the above embodiment, but can be configured in other ways.

DESCRIPTION OF SYMBOLS 1 Riding type rice transplanter 2 Traveling vehicle body 3 Seedling planting device 11 Support frame of seedling planting device 13 Planting mechanism 14 Float 15 Seedling stage 17 Lower shoe member 18 Lower rail 21 Upper guide rails 23a-23d Upper shoe member 24 Leveling mechanism 29 Lifting control lever of leveling mechanism 30 Lifting control mechanism of leveling mechanism 32 Shoe lifting mechanism 35 Control lever of shoe lifting mechanism 43 Lock pin

Claims (4)

A lower shoe member that slidably guides and supports the seedling table along a lower rail that is attached to the support frame of the rice transplanter so as to extend laterally, and a guide rail that is attached to the upper back surface of the seedling table. In the support device for the seedling stage, comprising an upper shoe member provided on the support frame so as to be freely movable,
A support device for a seedling platform in a rice transplanter, wherein the upper shoe member is configured to move up and down by a shoe lifting mechanism provided on the support frame.   The upper shoe member according to claim 1, wherein a plurality of the upper shoe members are arranged at appropriate intervals along the longitudinal direction of the guide rail, and at least two of the upper shoe members are A device for supporting a seedling platform in a rice transplanter, wherein the device moves up and down by a shoe lifting mechanism.   3. The upper and lower movements of the upper shoe member according to claim 1 or 2, wherein the shoe raising / lowering mechanism is moved up and down with respect to a leveling mechanism for leveling a farm scene in front of the seedling platform. Thus, the seedling mounting support device in the rice transplanter, which is detachably connected.   4. The seedling support device for a rice transplanter according to any one of claims 1 to 3, wherein the shoe lifting mechanism is provided with a lock means for raising the shoe lifting mechanism in an operating position.

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