JPH0641412U - Claw prevention device for planting nails in rush transplanter - Google Patents

Abstract

(57) [Abstract] [Purpose] In the planting work with the planting claw of the rush planting machine, even if it is pushed out by the push rod that is elastically arranged below the planting claw, it is still inside the groove of the planting claw. The purpose of the present invention is to effectively and surely remove the remaining rush grass seedlings to the outside, to prevent seedling clogging, and to eliminate inconveniences such as missing plants and poor posture of planted seedlings. [Structure] A scraper 5 that reciprocates back and forth is disposed in the groove portion 1a of the planting claw 1 so as to obliquely pass between a rear upper part and a front lower part of the planting claw 1 to perform the reciprocating motion. The time of
After the end of the planting, the push rod 2 is retracted until the planting claw 1 reaches the rotation top dead center, and the reciprocating stroke is such that the rear retracting position is behind the push rod receiving portion 2a at the time of retracting. The forward pushing position is configured to be forward of the tip of the planting claw.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a structure for preventing a seedling from being clogged in the groove of a planting claw in a rush transplanter.

[0002]

[Prior art]

 Conventionally, it has been publicly known that a plant transplanter of a rice transplanter has been improved to be a grass transplanter. It is also known that a planting claw that cuts off the seedling and plants the seedling on the field is constructed. Then, in order to smoothly plant seedlings on the field from the planting claws at the time of planting, a configuration is known in which a push rod is arranged below the planting claws to push forward the grass seedlings.

The structure of a conventional planting claw and push rod will be described with reference to FIGS. 11 and 12. 11 is a perspective view of a conventional planting claw and push rod, and FIG. 12 is a front view of the same. The planting claw 1 has a base fixed to the upper part of a planting arm 3 for rotating the planting claw by a bolt, and is divided into a fork-like bifurcation from the central part to form a groove 1a and a tip 1b-1b. is doing. As shown in FIG. 12, the tip portion 1b is bent in an inverted L shape in a front view to form a side surface portion 1c, and the lower side of the side surface portion 1c is formed into a blade shape. By constructing the planting claw in this way, the planting arm 3 rotates, and first, when inheriting the rush seedlings from the seedling mounting table, a predetermined amount of the rush seedlings is cut off at the tips 1b and 1b. The receiving portion 2a of the push rod described later pushes out the rush seedlings in the groove portion 1a at the time of planting, and the tip portion 1b is It serves as a member that guides the receiving portion 2a so as not to escape laterally.

A push rod 2 is provided below the planting claw 1 so as to be able to move forward and backward from the tip of the planting arm 3. A U-shaped (or V-shaped) receiving portion 2a in a front view is fixed to the tip of the push rod 2 via a guide plate portion 2b. The receiving portion 2a is arranged in a shape to be fitted between the side surface portions 1c, 1c of the planting claw tip portions 1b, 1b, and suppresses the blurring of the receiving portion 1a when pushing out rush seedlings. In addition, as described above, it is configured so as to suppress seedlings from the outside.

[0005]

[Problems to be solved by the device]

 In the conventional planting claw configuration as described above, even if the push rod 2 is pushed forward, the sown grass may remain at the rear position within the groove portion 1a of the planting claw 1, and the push rod 2 may be pushed thereafter. Even if the rod 2 is pulled backward, the residual seedlings are pressed behind the receiving portion 2a of the pushed push rod 2 and are not removed. In this way, seedlings are clogged in the groove 1a of the planting claw 1, and even when inheriting a rush seedling from the seedling mounting table, the inheritance is not successful and a missing plant or poor planting appearance of the planting seedling occurs. It will be the cause.

[0006]

[Means for Solving the Problems]

 The present invention has the following structure in order to solve the above problems. That is, in the rush transplanter, a scraper 5 that reciprocates back and forth in the groove 1a at the tip of the planting claw 1 is arranged, and the time of the reciprocating reciprocating movement of the scraper 5 is set after the planting claw sedge planting. Between the time when the push rod 2 is pulled rearward and the time when the planting claw 1 is rotated to the top dead center, and the scraper 5 is in the groove 1a of the planting claw 1 and is located in the upper rear part and the lower front part. And the front end of the scraper 5 is located forward of the front end of the planting claw 1 at the forward movement end position in the forward and backward reciprocating movements. The rearward moving end portion is configured to be rearward of the push rod receiving portion 2a, and constitutes a device for preventing clogging of the planting claw in the rush transplanter.

[0007]

[Action]

 In the configuration in which the residual seedling removing device is attached to the planting claw of the rush transplanting machine, the scraper 5 of the residual seedling removing device moves the push rod 2 after planting the rush plant while the planting claw 1 is rotating once. After being pulled backward, it is pushed forward in the groove 1a of the planting claw 1 to reach the front of the tip of the planting claw 1 and push the rush seedlings remaining in the groove 1a. It is released to the outside by pushing out above the front part of the planting claw without contacting the receiving part 2a of the rod 2, and immediately before the planting claw 1 receives the rush seedling from the seedling table 10. The scraper 5 is pulled rearward of the push rod receiving portion 2a until the top dead center of the planting claw rotation is reached, and waits for the next succession of rush seedlings.

[0008]

【Example】

 The problems and configurations to be solved by the present invention are as described above. Next, the embodiments of the present invention shown in the accompanying drawings will be described. Fig. 1 is a side view of the entire hay transplanter, Fig. 2 is a perspective view showing the state of the planting claw 1 and the planting arm 3 equipped with a residual seedling removing device when the scraper 5 is extruded, and Fig. 3 is the same scraper 5. 4 is a side view showing the state of the scraper 5 when retracted, FIG. 4 is a side view showing the configuration of the scraper 5 in the planting claw 1, FIG. 5 is the same plan view, and FIG. 6 is a side view showing the configuration of the scraper 5 of another shape. FIG. 7 is a plan view of the same, FIG. 8 is a side view showing the structure of the scraper 5 with the extruding surface 5a attached to the tip, FIG. 9 is a front view of the same, and FIG. It is a diagram showing the forward and backward movement timing of.

The overall structure of the rush transplanter will be described with reference to FIG. In the rush transplanter, a planting part C is detachably attached to a rear part of a traveling device A through a work implement attachment device B. In the planting section C, the seedling mounting table 15 is arranged above the planting mission case M, and the chain case 16 is provided so as to project rearward from the planting mission case M, and is planted at the rear end of the chain case 16. The attachment arm 3 is provided, and the attachment claw 1 is attached to the tip of the attachment arm 3. Then, power is input to the planted mission case M via a transmission shaft 17 from a PTO shaft projecting rearward from the rear surface of the traveling device A, and the seedling table 15 is reciprocated left and right from the planted mission case M. Then, by rotating the planting arm 3 in synchronism with the reciprocating motion of the seedling mounting table 15, the tip of the planting claw 1 is rotated in an elliptical shape so that a fixed amount of rush seedlings on the seedling mounting table 15 can be fixed. They are cut and planted on the field.

The configurations of the planting claw 1 and the push rod 2 are similar to those shown in FIGS. 11 and 12 of the prior art, and the seedling removing device of the present invention is attached to the planting claw having such a configuration. It is a thing. That is, as shown in FIGS. 2 and 3, a rotary shaft 6a is projected in the middle of the planting arm 3 to pivotally support the planting arm 3, and the rotary shaft 6a is fixed to a drive shaft driven by the chain case 16. It is fixed to the end of the provided arm and serves as the rotating shaft 6a of the crank arm 6. On the middle of the crank arm 6, a pushing lever 7 is fixed by a bolt 8 and a nut 9, and further a seedling removing push rod 10 is provided in front of the rotary shaft 6a on the side surface of the planting arm 3. It is slidably supported by a guide member 11, and the pressing lever 7 is arranged so as to accurately press against the rear end of the seedling removing push rod 10, and the bolt 8 and nut 9 are loosened. In addition, the mounting position on the crank arm 6 is adjusted so that the push rod 10 for removing seedlings can be accurately pressed. Therefore, when the crank arm 6 is rotated, the pushing lever 7 pushes the tip of the seedling removing push rod 10 and slides forward.

Then, the front end of the seedling removing push rod 10 is fixed to one end of the intermediate rod 12, the other end of the intermediate rod 12 is fixed to the rear end of the scraper 5, and The scraper 5 is supported by the guide members 13 and 13 so as to be slidable back and forth by bolts 4 and 4 for fixing to the planting arm 3. Further, a return spring 14 is wound between the guide member 13 and the intermediate rod 12 at the rear part of the scraper 5 to urge the intermediate rod 13 and the scraper 5 rearward (therefore removing seedlings). When the pushing lever 7 is released from the push rod 10 for removing the seedlings, the scraper 5, the intermediate rod 12, and the seedlings are quickly removed. The push rod 10 for the vehicle is pulled backward. The tip of the scraper 5 is inserted into the groove 1a of the planting claw 1 and arranged.

In the seedling removing device having the above-described configuration, the crank arm 6 also makes one rotation about the rotation shaft 6a during one rotation of the planting arm 3, and as shown in FIG. The pushing lever 7 pushes the seedling removing push rod 10 to slide it forward, and the scraper 5 slides forward in the groove 1a of the planting claw 1 accordingly. Then, when the crank arm 6 further rotates and the pressing lever 7 is disengaged from the seedling removing push rod 10, the scraper 5 in the groove portion 1a of the planting claw 1 is pulled backward, and FIG. The state is as shown in. By reciprocating the scraper 5 back and forth in the groove 1a, the grass seedlings that are desired to be clogged in the groove 1a are pushed out and removed.

Next, the structure of the scraper 5 in the groove portion 1a of the planting claw 1 will be described. First, when the scraper 5 is pushed forward, the rush seedlings are pushed out to the upper side of the planting claw 1. This means that if the rush seedlings are pushed forward in parallel, the root portion of the seedling will hit the receiving portion 2a of the push rod 2 arranged below the tip portions 1b and 1b of the planting claw 1, This is because the seedlings are likely to be caught, and by pushing the seedlings above the front part of the planting claw 1, the seedlings can be removed smoothly without hitting the receiving portions 2a. Therefore, the shape of the scraper 5 in the groove portion 1a of the planting claw 1 is to pass through the groove portion 1a from the upper rear portion to the lower front portion as shown in FIG. 4 and FIG. As shown in FIG. 7, the vehicle passes through the lower part of the front part and the upper part of the rear part. Further, as shown in FIG. 3, by inclining the sliding direction of the scraper 5 upward with respect to the planting claw 1 by an angle θ1, the pushing out of the grass seedlings to the front upper part becomes smoother.

Next, the forward and backward reciprocating stroke of the scraper 5 is such that the rush seedlings in the groove portion 1a that were not pushed out by the push rod 2 are extruded and removed. It is arranged at a position further rearward than the second receiving portion 2a and located at the rearmost portion of the groove portion 1a. When the front push-out is performed, the push rod 2 is positioned forward of the receiving portion 2a of the push rod 2 and is further forward of the frontmost end portion of the planting claw 1 (dimension L), and the inside of the groove portion 1a. Make sure that the seedlings are released more reliably.

It should be noted that the above is the description of the configuration of the wire-shaped scraper, but in the case of the wire-shaped scraper, the front part of the seedling in the groove 1a does not press against the scraper 5, and only a part of the scraper is used. It is conceivable that the scabbard seedlings may be pushed out by No. 5 and still remain in the groove 1a. Therefore, as shown in FIGS. 8 and 9, it is possible to fix the extrusion surface portion 5a at the tip of the scraper in the groove portion 1a. The push-out surface portion 5a has a shape in which the lower portion is inclined forward (angle θ2, the same angle when the wire rod is used) in conformity with the shape of the scraper 5 in a side view, to facilitate extruding the sward. ing. Further, in a front view, the push rod is shaped so as to fit all over the inside of the receiving portion 2a, that is, all the residual seedlings in the groove portion 1a are pushed out, and when the receiving portion 2a passes through, The gap between the receiving portion 2a and the scraper for preventing the residual seedlings from protruding does not occur. The pushing surface portion 5a in FIG. 9 is U-shaped in accordance with the U-shaped receiving portion 2a in the front view, but when the receiving portion 2a is V-shaped in the front view, it may be formed in the V-shape.

Finally, the timing of reciprocating back and forth of the scraper 5 during the rotation of the planting claw 1 will be described with reference to FIG. In one rotation locus of the planting claw 1 in the figure, the position where the seedling mounting table 15 receives the sward of the sward is set to the seedling inheritance position, and at the bottom dead center of the rotation locus, the planting to the field is performed. The completed position is the end position of planting, the position where the push rod 2 is retracted after the end of planting is the push rod retracted end position, and the top dead center in the trajectory of the planting claw rotation is the top dead center position. To do. First, during the period from inheriting the seedlings from the seedling mounting table 15 to the planting claws 1 until planting the seedlings in the field (to), the seedlings are conveyed downward and the push rod 2 extrudes the seedlings. Further, when seedlings remain in the groove portion 1a during the rearward pulling of the push rod 2 after the planting claw 1 has finished planting at the bottom dead center of rotation (to), the scraper 5 can effectively eliminate the residual seedlings after the end of the push rod withdrawal. That is, after the pulling of the push rod 2 in the upward trajectory of the planting claw 1, the scraper 5 is pushed forward to eliminate the residual seedlings.

If the scraper 5 is not retracted by the time the seedling is passed from the seedling mounting table 15, grass seedlings will enter the rear of the scraper 5 in the groove 1a, and After that, it will no longer be possible to remove it with the scraper 5. Therefore, it is necessary to retract the scraper 5 to the last part in the groove 1a before the seedling is passed from the seedling mounting table 15, and the withdrawal limit time is set to the top dead center position immediately before the seedling is passed. . That is, the scraper 5 is moved back and forth between the end of the pull-in of the push rod 2 and the top dead center position of the rotation locus of the planting claw 1 (~). The pushing timing of the pushing lever 7 to the seedling removing push rod 10 is adjusted. The adjustment of the timing is obtained by adjusting the attachment angle of the crank arm 6 to the planting arm 3 on the rotary shaft 6a.

[0018]

[Effect of device]

 Since the present invention is configured as described above, it has the following effects. That is, since the seedling removing device having the scraper 5 that reciprocates back and forth in the groove 1a of the planting claw 1 of the grass transplanter is provided as in claim 1, the seedling removing device is provided in the groove 1a of the planting claw 1. Residual grass seedlings are removed, the seedlings are not clogged, and it is possible to eliminate defective plants and poor posture of planted seedlings.

Further, since the time of reciprocating the scraper 5 back and forth once for each rotation of the planting claw is optimized as claimed in claim 2, the seedling is provided behind the scraper 5 in the groove 1 a of the planting claw 1. The residual seedlings can be effectively removed by preventing a situation in which the seedlings are clogged.

Further, as in claim 3, the shape of the scraper 5 is configured such that the rush seedlings are pushed out above the front part of the planting claw, so that when the scraper 5 is pushed out, the vicinity of the root of the rush seedlings is the receiving portion of the push rod 2. It can be smoothly discharged to the outside without contacting the 2a.

Further, since it is configured as in claim 4, when the scraper 5 is retracted rearward, the grass seedlings that cannot be pushed out by the push rod receiving portion 2a are in front of the scraper 5, and When the scraper 5 is pushed forward, the tip of the scraper 5 projects forward of the planting claw 1, so that the residual seedlings are discharged to the outside more reliably from the groove 1a. By attaching the seedling removing device configured as described above to the planting claw, a hay transplanter that can perform a very good planting work is obtained.

[Brief description of drawings]

FIG. 1 is an overall side view of a grass transplanter.

FIG. 2 is a perspective view showing a state where a scraper 5 is pushed out of a planting claw 1 and a planting arm 3 provided with a residual seedling removing device.

FIG. 3 is a side view showing a state when the scraper 5 is retracted.

FIG. 4 is a side view showing a configuration of a scraper 5 in the planting claw 1.

FIG. 5 is a plan view of the same.

FIG. 6 is a side view showing a configuration of a scraper 5 of another shape as well.

FIG. 7 is a plan view of the same.

FIG. 8 is a side view showing the configuration of the scraper 5 in which the extruding surface portion 5a is also attached to the tip portion.

FIG. 9 is a front view of the same.

FIG. 10 is a diagram showing the reciprocating timing of the scraper 5 during rotation of the planting pawl.

FIG. 11 is a perspective view of a conventional planting claw and push rod.

FIG. 12 is a front view of the same.

[Explanation of symbols]

 1 Planting claw 1a Groove 2 Push rod 2a Receiving part 3 Planting arm 5 Scraper

Claims (4)

[Scope of utility model registration request] 1. In a grass transplanter, a tip of a planting claw 1 is formed into a bifurcated fork shape, a front end of a scraper 5 is faced in a groove portion 1a, and the scraper 5 is arranged to reciprocate back and forth. A device for preventing clogging of a planting nail in a rush transplanter characterized by the above. 2. The device for preventing clogging of a planting claw according to claim 1, wherein the scraper 5 is reciprocally moved forward and backward.
A device for preventing clogging of a planting claw in a plant for planting nails, wherein the push rod 2 is retracted rearward after the planting claws have been planted and then the rotation of the planting claw 1 is performed up to the top dead center. . 3. The device for preventing clogging of a planting claw according to claim 1, wherein the scraper 5 is reciprocally slid in a slanting direction in which the tip is upward with respect to the planting claw 1. A device to prevent clogging of planted nails in rush transplanters. 4. The forward and backward reciprocating movement range of the scraper 5 for preventing clogging of the planting claw according to claim 1, wherein the tip of the scraper 5 is located in front of the tip of the planting claw 1.
A device for preventing clogging of a planting claw in a grass transplanter, characterized in that it is located between the positions behind the receiving part 2a when the push rod 2 is retracted.