JP2007037500A - Transplanter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a transplanter having a seedling transfer apparatus to transfer a mat seedling from the front part of a traveling machine body backward and enabling the adjustment of the inclined posture of the seedling transfer apparatus to perform the mat seedling feeding operation while keeping the almost optimum working postures of the levee-side assistant and the operator on the transplanter. <P>SOLUTION: The transplanter has a seedling transfer apparatus supported its front part and rear part at a side of the traveling machine body with separate supporting devices having adjustable supporting height. The supporting devices are a plurality of posts standing at the front and rear parts of the sides of the body and having adjustable length. The seedling transfer apparatus is lifted or lowered by releasing the engagement of the cylinder of the supporting post and a supporting rod by gripping an operation tool. The supporting post is extended or constricted by an actuator. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a transplanter provided with a seedling transfer device for transferring a mat seedling from a front part to a rear part of a traveling machine body.

  Connected to the rear part of the traveling machine body is a transplanting machine that scrapes the mat seedling from the seedling stand and transplants it to the field, and a seedling transfer device that transfers the mat seedling from the front part to the rear part of the traveling machine body Provided with a slant to the bottom, the assistant at the heel supplies the mat seedling to the front part of the seedling transfer device, and the operator on the transplanter takes out the mat seedling from the rear part of the seedling transfer device and connects it to the rear part of the traveling machine body A transplanter configured to supply to the seedling platform of the transplanter is already known (see Patent Document 1).

JP 2005-176680 A

The thing of the said patent document 1 is that the front-and-back inclination of the seedling transfer device is constant, and the height of the front part of the seedling transfer device depends on the field conditions where the height of the cocoon is different from the general height or the physique of the assistant. In some cases, it was forced to take an unreasonable posture when supplying mat seedlings.
In addition, if the seedling transfer device is moved up and down in parallel in order to make the height of the front part of the seedling transfer device appropriate, the height of the rear part also changes by the same amount. Unreasonableness may occur.
An object of the present invention is to provide a transplanting machine provided with a seedling transfer device for transferring mat seedlings from the front part to the rear part of the traveling machine body, in which both the assistant on the heel side and the operator on the transplanting machine have a substantially appropriate working posture. It is an object of the present invention to provide a transplanter that can adjust the inclination posture of the seedling transfer device so that mat seedling supply work can be performed.

  The present invention relates to a seedling transfer device for connecting a transplanting machine for scraping a mat seedling from a seedling stand and transplanting it to a farm field at the rear part of the traveling machine body and transferring the mat seedling from the front part to the rear part of the traveling machine body. The transplanting machine provided with the first feature is that the seedling transfer device is supported on the side part of the traveling machine body through a support device whose height can be adjusted separately for the front part and the rear part.

  A second feature is that a plurality of support devices are erected on the front and rear sides of the traveling machine body, and each of the support devices is composed of vertically-extendable support columns.

  Further, the column is composed of a cylindrical column standing on the side of the traveling body and a support rod that is slidably fitted inside the cylindrical column, and a locking position between the cylindrical column and the support rod is selected. Thus, the height of the front part and the rear part of the seedling transfer device can be set separately, and the seedling transfer device is provided with a handle and an operation tool that can be gripped at the same time as the handle. A third feature is that the seedling transfer device can be operated up and down by releasing the lock between the pillar and the support rod.

  A fourth feature is that the support column is configured to be vertically extendable by an actuator.

  The transplanter of the present invention is connected to the rear part of the traveling machine body with a transplanting machine for scraping the mat seedling from the seedling platform and transplanting it to the field, and also transfers the mat seedling from the front part to the rear part of the traveling machine body. In the transplanting machine provided with the seedling transfer device, the seedling transfer device is supported on the side part of the traveling machine body through the support device whose height can be adjusted separately for the front part and the rear part. Do not overload the work posture of the assistant who places the mat seedling on the front end of the device and the operator who takes the mat seedling from the rear end of the seedling transfer device on the transplanter and places it on the seedling platform In addition, the optimum height of the front end portion and rear end portion of the seedling transfer device and the forward / backward inclination can be appropriately selected so that the mat seedling can be smoothly conveyed on the seedling transfer device.

In addition, since the support device is erected on the front and back sides of the traveling machine body, and is composed of a strut that can be vertically expanded and contracted separately, one of the front part and the rear part of the seedling transfer device is supported by the strut. By adjusting the other height, the desired one of the front end portion or the rear end portion of the seedling transfer device can be adjusted, and then the other can be set to a height while squeezing the front / rear inclination of the seedling transfer device. .
Further, at that time, the height of the other one is adjusted while receiving the load of the seedling transfer device on the front and rear columns, so that the weight supported by the operator during height adjustment can be reduced.

  Further, the column is composed of a cylindrical column standing on the side of the traveling body and a support rod that is slidably fitted inside the cylindrical column, and a locking position between the cylindrical column and the support rod is selected. The height of the front part and the rear part of the seedling transfer device can be set separately, and the seedling transfer device is provided with a handle and an operation tool that can be gripped at the same time as the handle. Since the seedling transfer device can be operated up and down by releasing the lock between the support rod and the support rod, it is possible to release the lock between the cylindrical column and the support rod while supporting the seedling transfer device with a handle. It is possible to smoothly perform a series of operations for adjusting the height of the seedling transfer device, such as unlocking of the seedling transfer device, up and down operation of the seedling transfer device, and re-locking.

  And if the said support | pillar is comprised by an actuator so that it can expand-contract vertically, the operator can adjust the height of a seedling transfer apparatus, without supporting a heavy article.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1 and 2, a riding type rice transplanter 1 which is an example of a transplanter of the present invention is provided with a transplanter 3 in a rear portion of a traveling machine body 2 through a hydraulic link mechanism 4 so as to be movable up and down. The lower part of the body 2 includes a pair of left and right front wheels 5a and 5a and rear wheels 5b and 5b.
An unillustrated engine, a hydraulic continuously variable transmission, and a transmission case are provided at the front of the traveling machine body 2, and the power extracted from the engine is transmitted to the power in the transmission case via the hydraulic continuously variable transmission. The device distributes the driving power and the planting power to the front wheels 5a and 5a, the rear wheels 5b and 5b, and the transplanting machine 3.

The transplanting work machine 3 will be described in detail. A planting horizontal frame 6 is provided horizontally at the rear end of the hydraulic link mechanism 4 via a rolling shaft, and a seedling support is supported above the planting horizontal frame 6. A frame 7 is erected to support the upper part of the seedling mount 8 so as to be slidable in the left-right direction.
A plurality of planter cases 9 are attached to the rear lower portion of the planting lateral frame 6, and seedlings for planting beaks 10 are provided on the planter case 9.
Moreover, the lower part of the seedling stage 8 is supported on the upper surface of the planter case 9 via an apron so as to be slidable in the left and right directions.
A plurality of floats 11 are provided adjacent to the planter case 9 in the left-right direction, and the riding rice transplanter 1 lowers the transplanter 3 so that the float 11 contacts the field scene. Then, by driving the beak 10 while the traveling machine body 2 is traveling, the beak 10 scrapes off the seedlings on the seedling mounting base 8 and plantes them in the field.

  In addition, the seedling placing table 8 has a seedling placing surface 8a made of super-hydrophilic resin, moisture is retained between the seedling placing surface 8a and the seedling, and the seedling is stably slid on the seedling placing surface 8a. This prevents the stock removal due to poor seedling feeding.

On the other hand, the upper part of the traveling machine body 2 is covered with various machine body covers such as a front cover 12 covering the front part of the machine body and a main cover 13 covering the rear part of the machine body.
The front cover 12 has a bonnet portion 12a in the center, and front steps 12b and 12b are integrally connected to both sides thereof.
The main cover 13 includes a central bulging portion 13a in which a seat 14 is provided, and a floor step 13b is provided surrounding the front half of the central bulging portion 13a. The front and rear rear height inclined surfaces 13c are connected to the rear end portion of 13b, and a flat rear step 13d is provided at the rear end portion of the inclined surface 13c.
The front steps 12b and 12b, the floor step 13b, and the rear steps 13d and 13d provided on these body covers can be moved from the front to the rear of the traveling body 2, and the rear steps 13d and 13d can be moved. 13d is a step for a seedling supply operation for placing a foot during a seedling supply operation from the seedling transfer device 15 to be described later to the seedling mounting base 8.

  On the other hand, the both sides of the traveling machine body 2 are provided with a seedling transfer device 15 for supplying the mat seedling N from the heel Z in front of the traveling machine body 2, and the seedling transfer device 15 includes a fixed conveyor 15a and a front portion of the fixed conveyor 15a. The first movable conveyor 15b is provided so as to be pivotable up and down, and the second movable conveyor 15c is provided at the rear of the fixed seedling table 15a so as to be pivotable up and down. The first movable conveyor 15b and the second movable conveyor 15c are folded to be folded on the fixed conveyor 15a, and the posture can be changed. .

Further, outside the front step 12b in front of the floor step 13b of the traveling machine body 2, a front strut 16 and a rear strut 17 are erected as support devices, and a seedling is attached by attaching the bottom of the fixed conveyor 15a. The transfer device 15 is supported.
As shown in FIG. 2, when the mat seedling N is supplied from the ridge Z to the riding type rice transplanter 1, the seedling transfer device 15 is in an unfolded posture, and the whole of the seedling transporting device 15 is in a tilted posture that is low before and after. Yes.
At this time, the first movable conveyor 15a constituting the seedling transfer device 15 largely protrudes from the front end of the traveling machine body 2, and the second movable conveyor 15b extends to the side of the rear end portion of the seat 14, and the transplanter 3 It is located in the vicinity of the seedling stage 8.

  The seedling transfer device 15 in the unfolded posture state as described above generally has a roller conveyor in which a plurality of rolling rollers 19 are attached between the left and right outer frames 18, 18 at a predetermined interval, as shown in FIG. When the mat seedling N is replenished to the seedling transfer device 15 from the heel, first, the first seedling platform 15a of the seedling transfer device 15 that protrudes greatly from the front end of the traveling machine body 2 The mat seedling N can be continuously replenished onto the seedling transfer device 15 from outside the field by being positioned and sliding the mat seedling N sequentially on the rolling roller 19 to the rear of the machine body.

  In addition, a stopper plate 20 having an inverted L-shaped cross section is provided at the rear end of the second movable conveyer 15c constituting the seedling transfer device 15, and the stopper plate 20 is configured to have a front and rear inclined posture. The mat seedling N is prevented from falling from the rear end portion of the seedling transfer device 15 that is used, and transplanting work can be performed in a state where the mat seedling N is placed using the seedling transfer device 15 as a spare seedling stand. Yes.

Then, when the mat seedling N transferred to the rear end portion of the seedling transfer device 15 is taken out from the seedling transfer device 15, the next mat seedling N moves to the rear end portion of the seedling transfer device 15 by its own weight. The operator can move the mat from the rear end of the seedling transfer device 15 while staying at the rear part of the traveling machine body 2 without moving back and forth on the traveling machine body 2 like the one provided with the spare seedling stand at the front part of the traveling machine body 2. The seedlings N can be sequentially supplied to the seedling stage 8.
That is, when the assistant supplies the mat seedling N to the seedling transfer device 15 from outside the machine, the operator supplies the mat seedling N to the seedling mount 8 without moving from the rear part of the traveling machine body 2 at all. When there is no assistant, the operator supplies the mat seedling N to the seedling transfer device 15 from the outside of the machine and moves the mat seedling N on the seedling transfer device 15 to the rear of the machine body. When the mat seedling N is supplied from the rear end of the seedling transfer device 15 to the seedling stage 8 sequentially, the mat seedling N supplied on the traveling machine body 2 from the outside of the machine is supplied to the seedling stage 8 at least. It is not necessary to move back and forth on the traveling machine body 2.

  In the riding type rice transplanter 1 configured as described above, when the mat seedling N is supplied to the seedling placing stand 8 from the edge of the seedling, the seedling box 21 containing the mat seedling N or the seedling on which the mat seedling N is placed. When the scooping plate 22 is placed on the front end portion of the seedling transfer device 15, the seedling box 21 slides on the seedling transfer device 15 configured to be high before and after and is transferred to the rear end side of the seedling transfer device 15. .

  Then, the operator slides the preliminary seedling N placed on the seedling box 21 or the seedling sowing plate 22 into the seedling placing table 8 and sequentially supplies the seedling box 21 or the seedling sowing plate 22 after finishing the seedling supplying operation. It is placed on the seedling transfer device 15 and returned when the riding rice transplanter 1 approaches the ridge Z again.

Here, the supporting device of the seedling transfer device 15 will be described in detail. The front support column 16 and the rear support column 17 are slid on the inside of the cylindrical column 23 and the cylindrical column 23 erected on the body frame of the traveling machine body 2. The upper end of the support rod 24 is provided with a rotation support shaft 24a, and brackets 25a and 25b can be rotated on the rotation support shaft 24a. It is attached.
And the seedling transfer device 15 is supported by the side part of the traveling body 2 by attaching the said fixed seedling stand 15a to each bracket 25a, 25b.

Further, as shown in FIG. 3, the cylindrical pillar 23 is provided with a plurality of holes 26, and an appropriate one of the plurality of holes 26 is selected and the holes 27 provided in the support rod 24 are combined. By inserting the locking pin 28 and locking the support rod 24 to the cylindrical column 23, the front and rear columns 16, 17 can be adjusted to desired lengths, respectively.
Then, by adjusting the front struts 16 and the rear struts 17 to appropriate lengths, the front end portion of the seedling transfer device 15, the height of the rear end portion, and the amount of forward and backward inclination are set according to the working conditions. Can do.
The distance between the pivot shafts 24a and 24a of the support rods 24 and 24 can be changed by adjusting the lengths of the front column 16 and the rear column 17 separately. A long hole 25c is formed in the bracket 25a on the front strut side, and the rotation support shaft 24a is allowed by moving in the long hole 25c.

FIG. 4 is a side view showing a case where the height of the seedling transfer device 15 is adjusted higher than the standard so that the working posture of the assistant does not become too low in the field where the heel Z is higher than the standard.
The support rod 24 of the front column 16 is engaged with the uppermost hole 26b that is two steps higher than the hole 26a at the standard position of the cylindrical column 23, and the rear column 17 is engaged with the hole 26c that is one step higher than the hole 26a at the standard position. By stopping, the front end portion is adjusted higher than the standard posture P (one-dot chain line in the figure) of the seedling transfer device 15, and the rear end portion is adjusted to a position equivalent to the standard position.

FIG. 5 is a side view showing a case where the height of the seedling transfer device 15 is adjusted to be lower than the standard so that the working posture of the assistant does not become too high in the field where the heel Z is lower than the standard.
The support rod 24 of the front column 16 is locked at the position of the lowermost hole 26d that is two steps lower than the hole 26a at the standard position of the cylindrical column 23, and the rear column 17 is locked at the position 26e that is one step lower than the standard position 26a. Thus, the front end portion is adjusted to be lower than the standard posture P (one-dot chain line in the drawing) of the seedling transfer device 15, and the rear end portion is adjusted to a position equivalent to the standard posture.
In the case where the seedling transfer device 15 is simply moved up and down in parallel, when the front end is adjusted up and down, the rear end also moves up and down, and the working posture of the operator on the machine may be deteriorated. Since the part moves upside down, the forward / backward inclination of the seedling transfer device 15 may become low in front and back in some cases, making it difficult to transfer the seedling to the rear.
However, since the rider-type rice transplanter 1 of the present invention can adjust the height of the front part and the rear part of the seedling transfer device 15, the mat seedling N is placed on the front end of the seedling transfer device 15 at the heel Z in front of the transplanter. The height of the operator who places the mat and the operator who takes the mat seedling N from the rear end of the seedling transfer device 15 on the riding rice transplanter 1 and places the mat seedling N on the seedling platform 8 is not overwhelming. The mat seedling N can be set while taking into account the forward / backward inclination of the seedling transfer device 15 so that the mat seedling N is smoothly conveyed on the seedling transfer device 15.

Moreover, by adjusting the other height in a state where one of the front part or the rear part of the seedling transfer device 15 is supported by the support 16 (17), the front end part or the rear end part of the seedling transfer device 15 is adjusted. After adjusting one of the desired ones, the other can be set to a height while squeezing the back-and-forth inclination of the seedling transfer device 15.
In addition, at that time, the height of the other one is adjusted while receiving the load of the seedling transfer device 15 by the one support 16 (17) at the front and rear, so that the weight supported by the operator when adjusting the height can be reduced.

Also, the front end located on the heel side needs to be moved up and down depending on the height of the heel, whereas the working height on the rear end is relative to the rear step, so the front end is adjusted up and down. No amount is needed.
In the present invention, since the front and rear struts are connected to positions shifted rearward from the front and rear center of the seedling transfer device 15, the vertical amount of the front end portion of the seedling transfer device 15 relative to the vertical amount of the front strut 16 is the rear strut. It is larger than the vertical amount of the rear end portion of the seedling transfer device 15 with respect to the vertical amount of 17.
Thereby, the necessary adjustment amount of the seedling transfer device 15 can be obtained without setting a large adjustment allowance between the cylindrical column 23 and the support rod 24.

In addition, if the seedling transfer device 15 is tilted in the front-rear and rear height as shown in FIG. 6, the seedling box 21 after the mat seedling N on the seedling transfer device 15 is supplied to the seedling mount 8, or the seedling-seeding It can be set as the return posture which returns board 22.
In FIG. 1, reference numeral 27 denotes a fall prevention member for preventing the mat seedling N from falling from the front end portion of the seedling transfer device 15 when the seedling transfer device 15 is in a tilted posture of the front and rear. And it is comprised by the leaf | plate spring, and when supplying the mat seedlings N from the front, it attaches so that it may elastically deform rearward and supply of the mat seedlings N may not be prevented.

7 and 8 show a second embodiment of the present invention.
Reference numeral 28 in the figure denotes a handle that is gripped when the seedling transfer device 15 is operated up and down, and is integrally formed with the rotation support shaft 24 a of the support rod 24, and the engagement between the cylindrical column 23 and the support rod 24. This is for raising and lowering the seedling transfer device 15 with the handle 28 in a state where the stop is released.
Further, while the operation tool 29 is rotatably supported on the rotation support shaft 24 a adjacent to the handle 28, the handle 28 is provided with a regulating member 28 a, and comes into contact with the operation tool 29. The downward rotation of the operation tool 29 is restricted, and the handle 28 and the operation tool 29 can be gripped and operated simultaneously.
On the other hand, a locking pin 30 that selectively engages with a plurality of holes 26 provided in the cylindrical column 23 is provided in the support rod 24 so as to be able to advance and retreat, and is urged toward the outer surface side of the cylindrical column 23 by a compression spring 31. Further, the locking pin 30 and the pin 32 provided on the base side of the operation tool 29 are connected by an interlocking wire 33.
In the figure, reference numeral 34 denotes a plate that supports the outer of the interlocking wire 33 and is attached to the support rod 24 by welding.

With the above-described configuration, in the present embodiment, the seedling transfer device 15 is provided with the handle 28 and the operation tool 29 that can be gripped simultaneously with the handle 28, and the gripping operation of the operation tool 29 is performed via the interlocking wire 33. The locking pin 30 is retracted inward of the support rod 24 against the compression spring 31 so that the lock between the support rod 24 and the cylindrical column 23 can be released.
Since the handle 28 and the operation tool 29 can be held simultaneously to support the seedling transfer device 15, the locking between the cylindrical column 23 and the support rod 24 can be released. A series of operations for adjusting the height of the seedling transfer device 15 such as the operation and the re-engagement operation can be smoothly performed without changing.

  Further, as described above, when returning the empty box 21 and the seedling sowing plate 22 after the mat seedling N is supplied to the seedling stage 8 during a series of planting operations, It is particularly advantageous because the return posture of the front, low and rear can be taken simply by grasping the handle 28 and the operation tool 29 at the same time and lifting the seedling transfer device 15 upward and releasing the hand.

Furthermore, FIG. 9 shows 3rd Embodiment of this invention, and the thing of this embodiment makes the length of the front and back support | pillars 16 and 17 expandable vertically with an actuator.
More specifically, electric motors (actuators) 36 and 36 are arranged side by side on a support frame 35 connected to the body frame of the traveling machine body 2, and screw screw shafts 37 and 37 are attached to output shafts of the electric motors 36 and 36. is doing.
Reference numerals 38 and 38 in the figure denote support rods that are mounted on the screw screw shafts 37 and 37, and nuts 39 that are screwed to the screw screw shafts 37 and 37 at the lower ends of the support rods 38 and 38. , 39 are attached.
On the other hand, reference numeral 40 in the figure is a controller for operating the electric motors 36, 36, and 41 is a control unit attached to the support frame 35. The controller 40 operates the electric motors 36, 36 to drive the screw screw shaft. The support rods 38 and 38 are moved up and down by rotating the plates 37 and 37 forward and backward, respectively, so that the lengths of the support columns 16 and 17 can be vertically expanded and contracted.

With the above configuration, the riding type rice transplanter 1 according to the present embodiment has the support columns 16 and 17 extended and retracted by the electric motors (actuators) 36 and 36 so that the operator can transfer the seedling transfer device 15 without supporting heavy objects. Can be adjusted.
Furthermore, in the present embodiment, since the vertical extension / contraction of the support columns 16 and 17 is performed by the rotation of the screw screw shafts 37 and 37, the length of the support columns 16 and 16 can be adjusted steplessly.

The controller 40 and the control unit 41 are connected by a long signal line 42 so that the controller 40 can be operated from any position at least between the front end portion and the rear end portion of the seedling transfer device 15. Yes.
With such a configuration, it is possible to easily adjust the height of the seedling transfer device 15 from an operator on the riding type rice transplanter 1 and an assistant on the ridge Z.

  Further, limit switches 43 and 43 are provided in the long hole 25c portion of the bracket 15a for attaching the seedling transfer device 15 to the front support column 16, and the rotation support shaft 38a of the support rod 38 is connected to the limit switches 43 and 43. Since the electric motors 36 and 36 are configured to stop driving by contact, the seedling transfer device 15 is prevented from being tilted more than necessary, and the mat seedling N is prevented from falling. Can be prevented.

  In addition, instead of the limit switches 43, 43, a seed sensor is provided in the seedling transfer device 15, and the electric motors 36, 36 are configured to stop the seedling transfer device 15 from being over-inclined based on the detected value of the tilt sensor. May be.

It is a top view of the transplanter of this invention. It is a side view same as the above. It is a principal part rear view same as the above. It is a side view which shows an example at the time of adjusting a seedling transfer apparatus higher than a standard. It is a side view which shows an example at the time of adjusting a seedling transfer apparatus lower than a standard. It is a side view which shows an example at the time of adjusting the seedling transfer apparatus to the attitude | position of front low and back high. It is a principal part side view which shows 2nd Embodiment. It is a principal part rear view which shows 2nd Embodiment. It is a side view which shows 3rd Embodiment.

Explanation of symbols

2 traveling machine body 3 transplanting work machine 8 seedling placing table 15 seedling transfer device 16 front support 17 rear support N mat seedling

Claims (4)

  Transplanting to the rear part of the traveling machine body is connected with a transplanting machine that scrapes the mat seedling from the seedling stand and transplants it to the field, and is provided with a seedling transfer device that transfers the mat seedling from the front part to the rear part of the traveling machine body A transplanter, wherein the seedling transfer device is supported on a side portion of a traveling machine body through a support device whose height can be adjusted separately for each of a front part and a rear part.   2. The transplanter according to claim 1, wherein a plurality of the support devices are provided on the front and rear sides of the traveling machine body, and are each composed of a support column that can be vertically expanded and contracted individually.   The column is composed of a cylindrical column that is erected on the side of the traveling body and a support rod that is slidably fitted inside the cylindrical column, and the locking position between the cylindrical column and the support rod is selected. The height of the front and rear parts of the seedling transfer device can be set separately, and the seedling transfer device is provided with a handle and an operation tool that can be gripped simultaneously with the handle. The transplanter according to claim 2, wherein the seedling transfer device can be operated up and down by releasing the locking with the support rod.   The transplanter according to claim 2, wherein the column is configured to be vertically extendable by an actuator.

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