JP4191581B2 - Vegetable transplanter - Google Patents

Description

  The present invention relates to a vegetable transplanter provided with a transplant hole opener that can be opened and closed and moved up and down.

Conventionally, a transplanting hole opening device having a pair of front and rear nail bodies is installed so that it can be opened and closed and moved up and down, and the transplanting hole opening device holds a seedling in a closed state and holds a seedling in an open state. There are vegetable transplanters that operate to drop.
In this type of transplanter, various technologies have been devised that make it possible to plant seedlings in a multi-film covered cocoon, and as one of them, for example, as disclosed in Patent Document 1, There is one provided with a left and right cutting blade that is inclined in the vertical direction in the left-right direction at the lower end of the transplant aperture.

JP 2002-165503 A

The technique shown in Patent Document 1 is provided with cutting blades facing left and right on both the front nail body and the rear nail body, which is costly and is formed by the transplant opening device when the transplant opening device comes out of the soil. The side surface of the hole is scraped up with the cutting edge of the rear nail body, and it is easy to cause landslide. Further, since the horizontal cutting edge is inclined in the vertical direction in the horizontal direction, In this case, the bottom surface of the hole formed by the opening operation of the front nail body and the rear nail body is inclined, and the upright posture of the seedling in the hole is easily impaired.
An object of the present invention is to provide a vegetable transplanter that can easily cope with such problems.

In order to achieve the above object, the present invention, as described in claims 1 and 2, is equipped with a transplant opener comprising a pair of front and rear nail bodies that can be opened and closed and moved up and down. In the vegetable transplanter that operates to hold the seedling in the closed state and drop the seedling in the open state,
At the lower end of the front nail body, a plate-like blade body that is formed in a left-right direction and extends downward from the lowermost end of the rear nail body is provided, and a left-right direction is provided at the lower edge of the plate-like blade body. A full-width portion is provided with a left-right cutting blade protruding downward from the lowermost end of the rear nail body, and the rear nail body is not provided with a cutting blade .

  In the present invention, the left-right cutting blade provided at the lower end of the front nail body smoothly cuts the multi-film covering the ridges into an appropriate width in the shape of a horizontal character when the transplanting opening device is lowered. The transplantation opening device enters the soil to form a hole at the entry point, and then the transplantation opening device is opened to form a bottom surface of the hole, and subsequently a seedling that is held inwardly. It is dropped on the bottom surface, and then moved upward while leaving the seedling in the hole.

  The transplant opening device of the known vegetable transplanting machine generally has a movement trajectory in the soil of the lower end of the front nail body shorter than that of the rear nail body, and the lower part moves forward ahead of the upper part. The lower end of the front nail body is not moved back and forth with respect to the soil, and the lower part of the rear nail body is moved backward with respect to the soil. The lower end forms the bottom surface of the hole on the soil surface, and then the upper part is raised so as to move forward ahead of the lower part. Therefore, the phenomenon in which the left and right cutting blades provided at the lower end of the front nail scrape up the soil on the rear side of the hole while the transplantation opening device is raised is compared to the case where a plate blade is provided on the rear nail body. As a result, the landslide of the hole is less likely to occur. In addition, the front nail body rushes into the soil so as to kick the soil forward, but at this time, the plate-like blade body acts so as to push the soil away and not enter between the front nail body and the rear nail body, On the other hand, when it is assumed that the plate-like blade body is provided at the lower end of the rear nail body, the plate-like blade body acts so as to positively enter between the front nail body and the rear nail body over the soil. Therefore, when the plate-like blade body is provided on the front nail body as in the present invention, the soil accumulates on the front surface of the plate-like blade body, compared with the case where the plate-like blade body is provided on the rear nail body. It becomes difficult.

The above-described invention is preferably embodied as follows.
That is, as described in claim 3, the left-right length of the left-right cutting blade is made substantially the same as the upper diameter of the root of the seedling. If it does in this way, it will become the tendency for the right-and-left width torn by the said left-right direction cutting blade to approach the minimum necessary level.

  Further, as described in claim 4, in addition to making the left and right lengths of the left and right cutting blades larger than the left and right widths of the lower end of the transplant aperture, a plurality of rearwardly entering and exiting the left and right cutting blades It becomes a visual triangular wave shape. In this way, the left and right widths torn by the left and right cutting blades are suitable for entering the transplant opening device into the soil, and the start point of cutting the multi-film by the left and right cutting blades is pointed out. Thus, the sharpness of the left-right cutting blade is improved.

According to the present invention, the following effects can be obtained.
That is, according to the first aspect of the present invention, the multi-film with the left and right cutting blades covering the soil surface can be smoothly and cleanly cut into the required width of a horizontal character in the left and right direction. After entering the soil and forming a hole for transplantation on the soil surface and exiting from the soil, the multi-film tearing location that has been expanded and expanded is revived by its own resilience and the tearing location As a result, the frost damage of the seedling after transplanting can be effectively prevented, and the vibration caused by the wind at the multi-film tearing portion can be reduced to suppress the landslide caused by the vibration. It can be done.

  Further, since the left and right cutting blades are provided in the front nail body, the left and right cutting blades are formed in the transplant hole formed by the transplant opening device as compared with the case where the left and right cutting blades are provided in the rear nail body. Since it is difficult to scrape the rear side of the hole, it is possible to effectively prevent the collapse of the hole, and the movement trajectory of the left-right cutting blade in the soil is shortened, and the frictional movement distance with the soil is shortened. It is possible to suppress wear at the sharp point of the lower edge of the left-right cutting blade.

  According to the second aspect of the present invention, the following effect can be obtained in addition to the effect of the first aspect of the invention. That is, the left-right cutting blade is inserted through the plate-like blade body. The multi-film to which the left and right cutting blades are torn can be smoothly guided to the upper side of the front nail body and the rear nail body. When entering the soil so as to kick the soil forward, the plate-like blade body is prevented from pushing away the soil and entering between the front nail body and the rear nail body, and the plate-like blade body is As compared with the case where the claw body is provided, the soil can be less likely to be deposited on the front surface of the plate-like blade body.

  According to the third aspect of the present invention, in addition to the above-described effects, the following effects can be obtained. That is, the left and right widths of the multi-film tearing portions by the left and right direction cutting blades are minimized. Therefore, the opening area of the tearing portion can be made as small as possible, and the frost damage and the landslide can be more effectively prevented.

  According to the fourth aspect of the present invention, the following effect can be obtained in addition to the above-described effect, that is, the transplant opening device can be smoothly soiled through the multi-film tearing portion by the left-right cutting blade. The multi-film can be cut more smoothly by the left and right cutting blades.

A vegetable transplanter 101 according to the present invention will be described with reference to the drawings.
1 is a side view showing the overall configuration of the vegetable transplanter 101, FIG. 2 is a plan view showing the overall configuration of the vegetable transplanter 101, and FIG. 3 is a rear view showing the lifting mechanism of the transplanter 151. 4 is a side view showing a lifting mechanism of the transplant aperture 151, FIG. 5 is a plan view showing a guide mechanism of the transplant aperture 151, and FIG. 6 shows a guide mechanism of the transplant aperture 151. FIG.

First, the overall configuration of the vegetable transplanter 101 will be described.
1 and 2, the vegetable transplanter 101 has an engine 103 and a mission case 104 arranged on the front and rear of the chassis frame 102, and a handle frame 106 that serves as a handle member is disposed rearward from the upper part of the mission case 104. Are connected in a horizontal direction. In addition, working unit support frames 105 and 105 are extended from the chassis frame 102 to the left and right.

  The body frame of the vegetable transplanter 101 includes a chassis frame 102, a handle frame 106, working unit support frames 105 and 105, a mission case 104, and the like.

  A seedling supply device 107 is disposed in the middle of the handle frame 106, and a seedling transplanting device 120 is disposed below the seedling supply device 107. The seedling supply device 107 and the seedling transplanting device 120 are used for seedling planting. A working unit is configured. The rear portion of the handle frame 106 is a driving operation unit 109.

  Front wheel support arms 111 and 111 are rotatably provided on the front portion of the chassis frame 102, and the front wheels 112 and 112 are pivotally supported on the front wheel support arms 111. Further, at the rear of the chassis frame 102, chain cases 116 and 116 are rotatably provided on the left and right, and the rear wheels 117 and 117 are pivotally supported on the chain cases 116, respectively.

  The front and rear front wheel support arms 111 and the chain case 116 are connected to each other through a link mechanism and a hydraulic cylinder 228 provided on the chassis frame 102, and the front wheel support arm 111 and the chain case 116 are interlocked. And the raising / lowering mechanism of the chassis frame 102 is comprised.

  Further, as shown in FIG. 3, working unit drive shafts 114 </ b> L and 114 </ b> R extending from the inside of the mission case 104 to the left and right are provided at the rear upper part of the mission case 104.

  A sprocket 127 for moving up and down the transplant hole opening device 151 provided in the seedling transplanting device 120 is fixed to the working unit drive shaft 114L extending to the left. Power is transmitted from the sprocket 127 through the chain 331, and the seedling transplanting device 120 is driven.

  On the other hand, a sprocket (not shown) for driving the seedling transport pot of the seedling supply device 107 is fixed to the working unit drive shaft 114R extending rightward. Then, power is transmitted from the sprocket through the chain, and the seedling supply device 107 is driven.

  As shown in FIG. 2, the seedling supply device 107 is provided with a disk-shaped rotary table 135 horizontally, and the rotary table 135 is driven to rotate by receiving a driving force transmitted from the working unit drive shaft 114R. A plurality of seedling transport pots 140, 140... Are held on the same circumference on the turntable 135. A seedling is inserted and held in the seedling transport pot 140 by an operator.

  Then, the seedling is dropped from an appropriate position of the movement locus of the seedling transport pot 140 that rotates with the rotation of the turntable 135 (a portion overlapping the planar view transplanter 151), and the transplantation hole of the seedling transplanter 120 is transferred. A seedling is put into the vessel 151. Here, the seedling transport pot 140 is provided with a shutter that can open and close the bottom surface. When the shutter is closed, the seedling is held, and when the shutter is opened, the seedling is dropped.

  In addition, seedling placing stands 131 and 131 are arranged on the left and right sides of the machine body, and seedlings are placed on these seedling placing stands 131 and 131, and the seedlings on the seedling feeding device 107 are manually operated by the operator. Supply to transport pot 140.

  A seedling transplanting device 120 is disposed below the seedling supply device 107 at the rear of the mission case 104. The seedling transplanting device 120 is provided with a transplant aperture 151 that opens and closes and moves up and down. The transplant hole opening device 151 is configured to hold a seedling in a closed state and drop the seedling in an open state.

  Each transplant aperture 151 receives a seedling from the seedling supply device 107 on the top dead center side of its moving path. More specifically, seedlings that fall from the seedling transport pot 140 at the appropriate position are put into the transplant opening device 151 from above.

In addition, each transplanter 151 enters into the cocoon 125 on the bottom dead center side of its own movement path to be in an open state to form a seedling planting hole in the cocoon 125 and It is supposed to drop seedlings into the holes.
Then, the soil covering is applied to the root portion of the seedling by the covering rings 119, 119,... Arranged behind the transplanting aperture 151, and the transplanting operation of one seedling is completed.

Next, the raising / lowering mechanism of the transplant hole opening device 151 is demonstrated using FIG. 3, FIG.
A rotary case 152 is arranged on one side of the left and right of the transplant aperture 151 (left side in this embodiment), and on the other side of the transplant aperture 151, ascending and descending of the transplant aperture 151 is guided. A guide means 153 is provided in the vertical direction, and includes an arm 157 and a link for connecting them in addition to these. The rotary case 152 is supported by the machine frame, the guide means 153 is fixed to the machine frame, and a transplanting hole device 151 is disposed between the rotary case 152 and the guide means 153. The transplanting hole device 151 is the seedling. It is configured to move up and down below the supply device 107.

As shown in FIGS. 3 and 4, a sprocket 155 is fixed on the side surface of the rotary case 152, and a chain 331 is wound between the sprocket 155 and the sprocket 127. Power is transmitted from the drive shaft 114L to the rotary case 152 so that the rotary case 152 rotates.
A fulcrum shaft 154 that rotatably supports the center of the sprocket 155 is inserted into the rotary case 152. The fulcrum shaft 154 is fixed to the working unit support frame 105.

  Accordingly, the rotary case 152 rotates together with the sprocket 155 in the direction of the arrow around the fulcrum shaft 154 (clockwise as viewed from the left side) f0. The rotation of the rotary case 152 causes the gears, shafts, and the like in the rotary case 152 to rotate, and the arm 157 provided at one end of the rotary case 152 rotates in a direction f2 opposite to the rotational direction of the rotary case 152. Is done.

An aperture support shaft 159 is fixed to the other end of the arm 157 (the end on the side opposite to the rotary case 152). The aperture support shaft 159 is an aperture that supports the transplant aperture 151. The instrument support 160 is rotatably inserted.
Here, the aperture support shaft 159 is a moving body that moves by obtaining the power of the engine 103 via the rotary case 152 and the arm 157, and moves up and down while drawing an elliptical orbit. Then, the transplanting aperture 151 supported by the aperture support shaft 159 also moves along the elliptical orbit together with the aperture support shaft 159.

  Here, the rotary case 152 and the arm 157 rotate only in a plane perpendicular to the left-right direction and do not displace in the left-right direction. For this reason, the elliptical orbit drawn by the aperture support shaft 159 is also an elliptical orbit including displacements in the front-rear direction (advancing direction of the machine body) and the up-down direction, and is not displaced in the left-right direction.

  Therefore, in order to control the posture of the transplant aperture 151, at least the forward / backward movement of the transplant aperture 151 needs to be restricted, and the guide means functions as the forward / backward restricting means. 153 and a guide body 171 guided thereby.

In addition, the transplanter 151 is lifted and lowered by driving the rotary case 152 and the arm 157 on the supporter shaft 159 that supports the transplanter 151. In other words, the transplanter 151 has a structure in which the guider 171 moves up and down following the lifter support shaft 159, and therefore, the guide body 171 on the driven side when entering the cage. In some cases, an unbalanced load is applied.
The guide means 153 and the guide body 171 are configured such that the guide body 171 does not fall off from the guide means 153 even when the above-described offset load is applied, and the transplant aperture 151 can be lifted and lowered reliably. It is said.

  As shown in FIGS. 3 and 4, the transplant aperture 151 has a pair of front and rear nail bodies 128 and 129 that open and close in a beak shape, and the front nail body 128 and the rear nail body 129 are pivoted. It is pivotally supported by a support shaft 164. The transplant aperture 151 is opened and closed by swinging the front nail body 128 and the rear nail body 129.

  The transplant aperture 151 is supported by an aperture support 160, and a guide 171 guided by the guide means 153 is fixed to the aperture support 160, and an opening / closing cam 161 is provided. Etc. are related. A spring 169 is interposed between the cup 160a fixed to the aperture supporter 160 and the pivot shaft 164. The spring 169 closes the front claw body 128 and the rear claw body 129. It is energized to be in a state.

The opening / closing cam 161 is fixed to the aperture support shaft 159 that connects the rotary case 152 and the aperture support 160 together with the arm 157, and is integrated with the arm 157 as the transplant aperture 151 is moved up and down. Rotate to. As the opening / closing cam 161 rotates, the opening / closing cam 161 and the rear nail body 129 are interlocked via the link 165 so that the front nail body 128 and the rear nail body 129 are opened and closed.
The cup 160a has a funnel shape so that the seedling can easily enter the cup 160a from the seedling supply device 107, and the seedling is delivered from the cup 160a to the inside of the front nail body 128 and the rear nail body 129.

A configuration for guiding the raising and lowering of the transplant aperture 151 will be described.
As described above, the guide body 171 fixed to the transplant aperture 151 is guided by the guide means 153 provided on the machine frame of the vegetable transplanter 101, and the elevation of the transplant aperture 151 is guided. ing.

As shown in FIGS. 4 and 5, the guide means 153 includes front and rear guide rails 253 and left and right guide rails 254.
At this time, as shown in FIG. 5, both guide rails 253 and 254 have a U-shaped cross section in the extending direction (vertical direction).

  The front and rear guide rails 253 are arranged so that the open side of the U-shaped cross section faces the left side, and the front and rear guide rollers 173 described later are inserted from the open side, that is, from the left side. The left and right guide rails 254 are arranged such that the open side of the U-shaped cross section faces the front side, and the left and right guide rollers 173 described later are inserted from the open side, that is, from the front side.

As shown in FIGS. 2 and 5, the guide means 153 is supported between the right front end portion of the handle frame 106 and the right working portion support frame 105.
The handle frame 106 and the working unit support frame 105 are part of the machine body frame of the vegetable transplanter 101 as described above.

As shown in FIGS. 5 and 6, the guide body 171 provided in the transplanter 151 has a base frame 177 serving as a main body. The base frame 177 has an L shape in plan view in which the front and rear plate portions 177a and the left and right plate portions 177b are connected.
A guide body support shaft 170 is fixed to the front and rear plate portions 177a so as to penetrate in the left-right direction, and the aperture supporter 160 of the transplant aperture 151 is supported on the left side of the guide body support shaft 170. It has become. As described above, the left side of the transplant aperture 151 is supported by the aperture support shaft 159 that moves along the elliptical orbit.

The guide body 171 is provided with front and rear guide rollers 173 and 173 and left and right guide rollers 174 and 174 formed of bearings.
A pair of front and rear guide rollers 173 are provided above and below the base frame 177, the upper guide roller 173 is supported on the outer side (right side) of the guide body support shaft 170, and the lower guide roller 173 is a guide body support shaft. 170 is supported by a left and right support shaft 175 provided in parallel below.

The front and rear guide rollers 173 and 173 are inserted into the front and rear guide rails 253 and are slidable along the direction in which the front and rear guide rails 253 are formed (vertical direction).
Each of the left and right guide rollers 173 is supported by a support shaft 176 in the front-rear direction and is inserted into the left and right guide rails 254 so as to be slidable along the formation direction (vertical direction) of the left and right guide rails 254. ing.

  The support shafts 175 and 176 are fixed to a base frame 177 that is a main body of the guide body 171. Specifically, a support shaft 175 is fixed to the lower bearing 173 on the front and rear plate portion 177a, and support shafts 176 and 176 are fixed to the left and right plate portion 177b.

As described above, the transplant aperture 151 moves up and down along an elliptical trajectory that is not displaced in the left-right direction.
Here, the front / rear guide roller 173 is guided by the front / rear guide rail 253, thereby restricting the forward / backward movement of the transplant aperture 151. By this restriction of the back and forth movement, the back and forth movement of the transplant opener 151 that moves up and down is restricted, and the posture of the transplant opener 151 is controlled, so that the posture of entering the reed 125 and the seedling from the seedling supply device 107 are controlled. The posture at the time of receipt (when the seedlings are dropped) is considered appropriate.
Further, the left and right guide rollers 174 are guided by the left and right guide rails 254, so that the right and left movement of the transplant aperture 151 is restricted.

  Next, a characteristic configuration of the present invention will be described with reference to FIGS. 7 is a left side view of the transplant aperture 151, FIG. 8 is a rear view of the transplant aperture 151, FIG. 9 is a left side view showing the lower portion of the transplant aperture 151, and FIG. 10 is a transplant aperture. 11 is a rear view showing a lower part of the transplanter 151, FIG. 11 is a left side view showing a modified example of the lower part of the transplant aperture 151, and FIG. 12 is a rear view showing a modified example of the transplanter 151.

  As shown in FIG. 7 and FIG. 8, a plate-like shape that is formed in a left-right direction plate shape at the lower end portion of the front nail body 128 of the transplant aperture 151 and extends downward from the lowermost end P 0 of the rear nail body 129. A blade body 180 is provided. At this time, the front nail body 128 and the plate-like blade body 180 may be formed by bending the same metal plate member, but the present invention is not limited thereto.

  Further, the lower edge of the plate-like blade body 180 is provided with a left and right cutting blade 181 whose full width portion in the left and right direction protrudes downward from the lowermost end p0 of the rear claw body 129. The left and right cutting blades 181 are sharp when viewed from the side. When processing this, the rear edge tip a1 of the rear surface of the plate-shaped blade body 181 is cut into a triangular shape as shown in FIGS. Alternatively, as shown in FIGS. 11 and 12, the front end edge a2 of the plate-like blade body 180 may be cut into a triangular shape, or the rear end edge a1 and the front end edge of the plate-like blade body 180 may be cut. Both a2 may be cut into a triangular shape.

  In addition, the left and right length L of the left and right cutting blade 181 is the upper diameter of the inner space of the root pot for the seedling w held by the transplant aperture 151 (that is, the upper diameter of the root soil S attached to the root of the seedling w). L1) is preferably substantially the same as L1), and is preferably larger than the left and right width L2 of the lower end of the transplant aperture 151.

  As shown in FIG. 10, the left-right direction cutting blade 181 should have a plurality of rear-view triangular wave shapes that enter and exit in the up-down direction as shown in FIG. 10, and more specifically, the three triangular waveform blades b1. , B2 and b3 are provided in a bilaterally symmetrical shape, and the apex p1 of the triangular corrugated blade b1 at the center in the left-right direction protrudes downward from the apex p2 of the other triangular corrugated blade b2.

  Next, regarding a series of operations when the seedling w is planted in a cocoon covered with a multi-film transplanting aperture 151, which receives and holds the tobacco seedling w inward of the front nail body 128 and the rear nail body 129, This will be described with reference to FIGS. Here, FIG. 13 is a side view explanatory view showing a state where the transplant aperture 151 has opened a transplant hole, FIG. 14 shows the transplant hole opened in the transplant aperture 151, and A is a side view. In the sectional view, B is a plan view.

  The transplant aperture 151 is moved forward with respect to the ground 182 as indicated by a one-dot chain line 183a in FIG. 13 by two actions of the forward movement of the airframe and the movement of the transplant aperture 151 along the elliptical orbit with respect to the airframe. It descends while displacing to f1, and then repeats moving so as to rise while displacing to the front f1 with respect to the ground 182 as shown by a one-dot chain line 183b in FIG.

  In this movement process, the transplant hole opening device 151 receives the tobacco seedling w from the seedling transport pot 140 in the vicinity of the uppermost position, and is placed inward of the front nail body 128 and the rear nail body 129 that are closed. 7 is held in an upright posture as shown in FIG. 7, and in this held state, it descends in an inclined posture in which the lower part moves forward in advance like the transplanter 151 shown in FIG. .

  By this descent, the left-right cutting blade 181 reaches the multi-film 184 covering the ridge, and first, the apex p1 of the triangular waveform blade b1 at the center in the left-right direction is pressed in contact with the multi-film 184, As a result, the triangular corrugated blade b1 smoothly cuts in the left-right direction starting from a specific position of the multi-film 184, and then the apexes p2, p2 of the other triangular corrugated blades b2, b2 make point contact with the multi-film 184 and are pressed. Then, the cut formed by the triangular corrugated blade b1 at the center of the left and right sides is torn smoothly so as to further expand in the left and right direction. As a result, the front nail body 128 and the rear nail body 129 are formed at specific locations on the multi-film 184. A cut in the shape of a horizontal character that substantially matches the left-right width L2 at the lower end is formed.

  Subsequently, the front nail body 128 and the rear nail body 129 are placed in the soil so that the front end of the front nail body 128 passes through the positions indicated by reference numerals c1, c2, c3, and c4 in FIG. At the time of this entry, the front nail body 128 and the rear nail body 129 both have a substantially inverted conical shape, so that the cut end of the multi-film 184 is forcibly and smoothly extended in the front-rear direction and spreads. The front nail body 128 and the rear nail body 129 are enlarged to match the outer peripheries of the front nail body 128 and the rear nail body 129, and the front nail body 128 and the left-right-direction blade body 180 act so that the soil can be pushed forward on these front surfaces. The facing blade body 181 prevents the movement of the soil from entering between the front claw body 128 and the rear claw body 129 from the front claw body 128 and the rear claw body 129. Adhere It acts to suppress the deposition Te.

  Thus, the transplanter 151 is lowered while forming a transplantation hole 185 in the soil 182 below the multi-film 184, and when it reaches the substantially lowermost position, guide operations such as the aperture support shaft 159 and the guide means 153 are performed. The front claw body 128 and the rear claw body 129 are instantaneously opened in the front-rear direction by the action of the opening / closing cam 161, the link 165, and the like, and the front end of the front claw body 128 is positioned at the position indicated by reference numeral c4. Is maintained, and the tip of the rear nail body 129 is moved to the position indicated by reference sign d1. By this opening operation, the tip of the back nail body 129 forms the bottom surface 185a of the transplant hole 185 shown in FIG. 14, and at this time, the tip of the back nail body 129 moves in a substantially horizontal rear direction. The bottom surface 185a of the hole 185 is also substantially horizontal. Then, the tobacco seedling w held inside the front nail body 128 and the rear nail body 129 has the tips of the front nail body 128 and the rear nail body 129 separated from the upper diameter L1 of the root soil S of the tobacco seedling w. At this time, it is dropped onto the bottom surface 185a of the hole 185 by its own weight, and at this time, the substantially horizontal bottom surface 185a stably supports the tobacco seedling w in an upright posture.

  Subsequently, the transplant aperture 151 is lifted while being displaced forward so that the upper part is advanced while maintaining the open state of the front nail body 128 and the rear nail body 129. In this ascending process, The tip moves so as to pass through the points indicated by reference numerals c5, c6, c7, and c8 in this order, and the tip of the rear nail body 129 has reference signs d2, d3, and d4 with respect to the respective points c5, c6, c7, and c8. , D5 are moved so as to pass through in this order, so that the tip of the rear nail body 129 contacts the side surface of the hole 185 except that the lowermost part 185b of the rear side surface of the hole 185 is slightly scraped. Without moving, and eventually leaves the multi-film 184 and comes out of the soil 182. After that, the tip of the front nail body 128 is moved upward so as to pass over the alternate long and short dash line 183b. body 28 and Kotsumetai 129 is restored actuated to the closed state, it rises toward the position that is passed to the next seedling.

  As is clear from the above, the front nail body 128 has a shorter movement trajectory (especially a movement trajectory that interferes with the soil) in the soil 182 than the rear nail body 129. In addition to effectively preventing landslide of the hole 185 by 181, the wear of the left-right cutting blade 181 is suppressed, and resistance to the opening operation of the front nail body 128 and the rear nail body 129 is reduced.

  Then, as shown in FIG. 14B, the cut end 184a of the multi-film 184 after being released from the interference with the transplant aperture 151 is sharply opened by the left and right direction cutting blade 181 to a size close to the necessary minimum and excessively extended. Since it is not done, it is revived by the resilience of itself over time and effectively shrinks, and the cut surface 184a thus reduced suppresses the intrusion of cold air into the hole 185 and prevents the seed w In addition to preventing frost damage, the flapping of the cut surface 184a due to wind is suppressed to prevent landslide on the side surface of the hole 185.

It is a side view which shows the whole structure of the vegetable transplanter. It is a top view which shows the whole structure of the vegetable transplanter 101. FIG. It is a rear view which shows the raising / lowering mechanism of the transplant hole opening device 151. FIG. It is a side view which shows the raising / lowering mechanism of the transplant hole opening device 151. FIG. It is a top view which shows the guide mechanism of the transplant hole opening device 151. FIG. It is a side view which shows the guide mechanism of the transplant hole opening device 151. FIG. It is a left view of a transplant aperture device. It is a rear view of a transplant opener. It is a left view which shows the lower part of a transplant hole opening device. It is a rear view which shows the lower part of a transplant opener. It is a left view which shows the modification of the lower part of a transplant opener. It is a rear view which shows the modification of the lower part of a transplant opener. It is side view explanatory drawing which shows a mode that the transplant aperture | opening device has opened the hole for transplant. 1 shows a transplant hole opened by a transplant opener, wherein A is a side sectional view and B is a plan view.

Explanation of symbols

101 vegetable transplanting machine 128 front nail body 129 rear nail body 151 transplant opening device 180 plate blade body 181 left and right direction cutting blade p0 bottom end L left and right length of left and right cutting blade L1 upper diameter of root S of seedling L2 transplant Left and right width of the lower end of the opener w Seedling

Claims (4)

A transplanter having a pair of front nails and a rear nail is installed so that it can be opened and closed and moved up and down, so that the transplanter holds the seedling in a closed state and drops the seedling in an open state. In the vegetable transplanting machine that operates to the left and right, a cutting edge is provided at the lower end portion of the front nail body that has a left and right direction cutting edge that protrudes downward from the lowermost end of the rear nail body. A vegetable transplanting machine characterized in that no cutting blade is provided . A transplanter having a pair of front nails and a rear nail is installed so that it can be opened and closed and moved up and down, so that the transplanter holds the seedling in a closed state and drops the seedling in an open state. In the vegetable transplanting machine that operates on the plate, the lower end of the front nail body is provided with a plate-like blade body that is formed in a laterally oriented plate shape and extends downward from the lowermost end of the rear nail body, A left and right cutting edge is provided at the lower edge of the body so that the full width portion in the left and right direction protrudes downward from the lowermost end of the rear nail body, and the cutting edge is not provided on the rear nail body.
Vegetable transplanter, characterized in that the decoction. The vegetable transplanter according to claim 1 or 2, wherein a left and right length of the left and right cutting blade is substantially the same as an upper diameter of a root soil of the seedling. In addition to making the left and right lengths of the left and right cutting blades larger than the left and right width of the lower end of the transplant aperture, the left and right cutting blades have a plurality of rearward triangular wave shapes that enter and exit in the vertical direction. The vegetable transplanter according to claim 1, 2, or 3.

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