JP2000316332A - Planting part of rice transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problems of the insufficient length of a planting part of a rice transplanter for achieving sufficient leveling performance with a float and the formation of deep float track and the falling down of adjacent seedlings in the case of using a long float. SOLUTION: The base ends of plural arms 87 are fixed to a rotatably supported lateral shaft 38 for adjusting the planting depth. A float 35 is placed under the planting depth adjusting shaft, a bracket-attaching face B is formed on the upper face at the back of the float main body, a bracket 86' is attached to the bracket attaching face B, a supporting shaft 85 is attached to the bracket and the supporting shaft is connected to the tip end of the arm. In the planting part of a rice transplanter having the above construction, the bracket-attaching face B is positioned ahead of the supporting shaft to prevent the face B to be positioned in an area A behind the supporting shaft and increase the area C' of the lower face of the float contacting with the field in the area A.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a planting portion of a rice transplanter. More specifically, the present invention relates to a technique for improving the leveling performance of a float in a planting section of a rice transplanter in order to improve a field without leaving traces of traveling wheels of a traveling vehicle body.

[0002]

2. Description of the Related Art Conventionally, a planting section of a rice transplanter has a float for erasing wheel traces of a traveling vehicle body or leveling a field before planting seedlings with a planting claw. The rear part is rotatably supported, and the front part of the float swings in accordance with the unevenness of the field, and presses the soil of the field from above to smooth the unevenness of the field.

In particular, in a planting section of a multi-row planting type rice transplanter, a center float is disposed at the center of the planting section, and a plurality of pairs of side floats are provided outside the planting section. A configuration in which a plurality of floats are leveled in front of a plurality of planting claws is also known.

[0004]

However, in the above-described planting section of the conventional rice transplanter, when the muddy soil of the field is hard, when the mud layer is thin, or when the cultivator has severe irregularities. In some cases, the wheel traces of the traveling vehicle body remain without being completely erased by the side float. Also, depending on the type of wheel, the leveling of the field by the float may be insufficient. Insufficient leveling causes variations in the depth of planting due to the planting claws and instability of the planting posture. Was rare.

In order to solve this problem, it has been considered that the float is made longer in the front-rear direction. Or tilting or knocking down the already planted neighboring seedlings (especially when bending and planting). Also, there is a problem that a trace of the float remains largely.

The problems to be solved by the present invention are as described above. Next, means for solving the problems will be described. In the first aspect, the base ends of the plurality of arms are fixed to the rotatable and horizontally supported planting depth adjusting shaft, and a float is disposed below the planting depth adjusting shaft. A bracket mounting surface is provided on the rear upper surface of the float,
In a planting portion of a rice transplanter having a configuration in which a bracket is provided on the bracket mounting surface, a fulcrum shaft is provided on the bracket, and the fulcrum shaft is connected to a tip of the arm, the position of the bracket mounting surface is the fulcrum shaft. The one that is more forward.

According to a second aspect of the present invention, the center float is arranged, and two or more pairs of side floats are arranged symmetrically on the left and right outer sides of the center float. The rear end is located forward of the rear end of the side float that is one inner side of the float.

According to a third aspect of the present invention, in the planting portion of the rice transplanter according to the second aspect, the rear end of the side float, which is one inner side of the outermost side float, is turned with a minimum radius. Is located forward of the trail drawn by the rear end of the outermost side float.

[0008]

Next, an embodiment of the present invention will be described. FIG. 1 is a side view showing the overall configuration of a rice transplanter having a planting section according to one embodiment of the present invention. FIG. 2 is a plan view showing a configuration in which the rear part of the float is suspended in the main planting section, FIG. 3 is a side view showing a configuration near the center float, and FIG. 4 is a configuration showing a configuration near the second side float. It is a side view.

First, an overall configuration of a riding rice transplanter according to an embodiment of the present invention will be described with reference to FIGS. That is, in the riding rice transplanter A, the planting portion 4 is disposed at the rear portion of the traveling portion 1 via the elevating link mechanism 27, and the traveling portion 1 has the engine 2 mounted above the front portion of the body frame 3 and mounted at the lower front portion. The front wheel 6 is supported via a front axle case, and the rear wheel 8 is supported via a rear axle case 7 at the rear. The engine 2 is covered with a bonnet 9, spare seedling stands 10 and 10 are disposed on both sides of the bonnet 9, and a steering handle 14 is disposed on a dashboard 5 at a rear portion of the bonnet 9. The vehicle body cover 12 covers both sides and the rear of the vehicle body frame 3, and the seat 13 is disposed at a position rearward of the steering handle 14.
Sides of the seat 13 and the front of the seat 13, and both sides of the seat 13 and the seat 1
3 steps backwards.

On the side of the driver's seat 13, a traveling speed change lever 30, an auxiliary speed change lever 31 for planting up / down and work traveling speed, and a planting sensitivity adjusting lever are arranged. A clutch pedal 32 and left and right brake pedals are arranged, and an eight-row fertilizer 33 is arranged behind the seat 13.

The planting section 4 includes a seedling table 16, a planting claw 17, a center float 34, and a plurality of side floats 3.
The seedling table 16 is disposed at a front height and a low level. The lower part of the seedling table 16 is reciprocated right and left by a lower guide rail 18 and an upper part of the front is an upper guide rail 19. The lower guide rail 18 and the upper guide rail 19 are slidably supported by a planting center case 20 via a frame or the like. Then, connecting pipes are protruded from the planting center case 20 to the left and right, and the chain cases 21 are fixed to the ends thereof. The chain cases 21 are fixed to each other, and a total of four chain cases 21 are arranged in parallel. These four chain cases 21, 21 ... extend rearward in parallel,
A rotary case 22 that rotates in one direction is arranged on each of the left and right sides of the rear end, and two planting claws 17 are arranged on each of the eight rotary cases 22, and an eight-row planting type planting part 4 is provided. Be composed.

In the above configuration, the planting center case 2
To 0, the power of the PTO shaft provided at the rear part of the traveling unit 1 is input via a universal joint or the like, and drives the rotary case 22 via the chain case 21 to drive the planting claws 17. In this manner, the seedling table 16 is reciprocally slid left and right along with the forward traveling, and the planting claws 17 are driven in synchronization with the reciprocating motion to cut out one seedling of seedlings so that the planting operation is continuously performed. Make up.

A front portion of the planting center case 20 is connected to the lifting link mechanism 27 via a rolling fulcrum shaft, and the lifting link mechanism 27 includes a top link 25, a lower link 26, and the like. The planting section 4 can be moved up and down by an elevating cylinder 28 arranged below.

The seedling mounting table 16 is divided into two seedling mounting tables on the right outside in the traveling direction to form a divided seedling mounting table 16D, and a fixed six-row seedling mounting table at the center of the machine is used as a main seedling mounting table. 16M, the split seedling mounting table 16D is configured to be detachable, the split seedling mounting table 16D is detached, and is mounted on the seedling mounting surface side of the main seedling mounting table 16M so as to be stowable. are doing.

Here, the configuration of the planting section 4 will be described in detail. That is, as shown in FIG. 2, the planting portion 4 has a center float 34 at the lower center and first side floats 35, 35 and a second side float 3 on both left and right sides.
5 ′ and 35 ′ are provided, and each of the floats 34.3
. Are provided on the brackets 86 on the upper surface of the rear part of each float, respectively (FIGS. 3 and 4).
The base ends of the planting depth adjusting arms 87 are fixedly mounted on the planting depth adjusting shaft 38 which is rotatably supported in the horizontal direction, and the distal end of the arm 87 is connected to the fulcrum shaft 85. It is connected to. These floats 34, 35, 35 'are made of synthetic resin or the like, and are formed by blow molding.

A base end of a planting depth adjusting lever 98 for changing a standard planting depth is fixed to the planting depth adjusting shaft 38, and the lever 98 is moved along a guide (not shown). By rotating, the planting depth adjusting arms 87
Is pivoted up and down so that the rear pivot point of each of the floats 34, 35 and 35 'is moved up and down to adjust the planting depth. An elevation control device 99 is provided above the front of the center float 34, detects the inclination angle of the center float 34, and automatically raises and lowers the planting section 4 in accordance with the detected value. Planting claw 17 due to unevenness etc.
The variation in the planting depth caused by the variance does not occur.
In this embodiment, the planting depth adjusting shaft 38 is configured to connect the three shaft members 38L, 38C, 38R via the connecting plates 88, 88, and the left and right shaft members 38L, 38L.
R can be shifted in phase with respect to the central shaft member 38C so that a difference can be provided between the height of the rear pivot point of the side floats 35 and 35 'and that of the center float 34. I have to.

Next, the mounting structure of the bracket to the first side float 35 and the second side float 35 'in this embodiment will be described. FIG. 5 is a side sectional view showing the case where the conventional bracket mounting structure is applied to the first side float, and FIG. 6 is a side sectional view showing the case where the bracket mounting structure of the present invention is applied to the first side float. It is.

First, a conventional mounting structure of a bracket to a side float will be described. That is, as shown in FIG. 5, the side float 35 is usually formed by blow molding so as to be hollow, but in the portion of the bracket mounting surface B, the bracket 86 'is attached to the upper surface of the float 35.
The upper wall U and the lower wall L of the float are formed so as to be integral with each other in order to withstand the bolt tightening pressure while being able to dispose the bolts and the like for mounting the bolts, so that the portion is not hollow. However, the left and right sides are hollow. Therefore, the float 35 does not come into contact with the field surface at the bracket mounting surface B, so that the field is not leveled at the bracket mounting surface B, and the leveling is performed only slightly behind the field. This was only the portion (C in FIG. 5), which caused insufficient leveling performance.

On the other hand, in the present invention, as shown in FIG. 6, the bracket mounting surface B is provided closer to the front than the conventional position, so that the bracket mounting surface B is not provided on the lower surface of the rear portion of the float 35. Thus, the above problem is solved. In particular, by arranging the bracket mounting surface B before the fulcrum shaft 85 that rotatably supports the float 35, the region is always in contact with the field and performs an effective leveling operation. Since the bracket mounting surface B is not provided in the area A on the side, the portion C 'where the leveling action is performed is wider than that of the conventional case C (C'> C), and the pressing is performed. The leveling action is improved.

As described above, the bracket mounting surface B is provided on the upper surface of the float 35 near the front as described above, and the structure of the bracket 86 'is adjusted so that the fulcrum shaft 85 is located rearward of the mounting surface B. This is achieved by a configuration in which the upper end is bent so as to be located rearward of the bracket mounting surface B. However, this configuration is merely an example, and for example, the bracket 86 'may be configured to be curved or may be configured diagonally.

Although FIG. 6 shows the structure of the first side float 35, the bracket mounting structure of the second side float 35 'is exactly the same. Further, in the present embodiment, the bracket mounting configuration is applied only to the first side float 35 and the second side float 35 ', but a similar configuration can be applied to the center float 34. The leveling performance of the float 34 can also be improved.

Next, the relationship of the length of the side float, which is another main part of the present invention, will be described in detail. FIG. 7 is a plan view showing the relationship between the positions of the rear ends of the first side float and the second side float. FIG. 8 is the relationship between the locus drawn by the first side float and the position of the rear end of the second side float. FIG.

That is, as shown in FIG. 7, the position P 'of the rear end of the second side float 35' located on the outermost side of the fuselage.
Is located forward of the rear end P of the first side float 35 located on the inner side of the first side float 35. In this embodiment, it is located forward by the distance x shown in FIG. . That is, the outermost second side float 35 'is
There is less need to level the irregularities as wheel marks, and because it passes through the path closest to the already planted adjacent seedlings, the length is kept to a minimum to prevent adverse effects on adjacent seedlings On the other hand, the first side float 35 that passes through the wheel traces and is leveled is lengthened to some extent so that the wheel traces can be surely erased.

As shown in FIG. 8, a case is considered in which a trail M drawn by the rear end P 'of the second side float 35' located on the outermost side of the body when the body is turned with the smallest radius is considered. In such a manner that the rear end P of the first side float 35 located on the inner side is located forward of the trajectory M,
The positions PP and P 'of the rear ends of the side floats 35 and 35' are adjusted. In other words, the chain line 3 in FIG. 8 is such that the rear end of the first side float projects rearward from the locus M.
The structure shown in FIG.

With this configuration, even when planting must be performed while turning the body with a small radius, for example, when planting on the shore having a sharp bend, the outermost second side float 35 'does not contact the shore. If only the operation is performed with care, the first side float 35 does not come into contact with the shore, so that the operator can reliably plant the plant near the bent shore with a simple operation.

Next, a configuration for connecting the side floats 35 and 35 ', which is another main part of the present invention, will be described. FIG. 9 is a plan view showing a configuration when the first side float and the second side float are connected.

That is, in this embodiment, as shown in FIG. 9, the side floats 35, 35 'adjacent to each other are connected via a connecting member 94 to form both side floats 35, 35'.
Can be configured to swing up and down integrally.

That is, conventionally, only the side floats 35 and 35 'adjacent to each other can be swung independently of each other, so that the leveling performance may not be sufficient in some cases. Variations were likely to occur. Alternatively, there was also a configuration in which many (three or more) sections were leveled with an integrated float, but this configuration had a high leveling performance, but the ground contact area for pressing the field was too large,
In some cases, traces of the float remained, mud pushing occurred, and impurities such as straw stayed at the front of the float to increase resistance and disturb planting.

In order to solve these problems, in this embodiment, the adjacent side floats 35, 35 'are connected to the connecting member 94.
It is possible to connect via. By connecting the side float located on the outermost side and the side float located one inner side of the float via the connecting member in this manner, compared to a configuration in which adjacent floats swing independently from each other, Since the leveling ability can be improved and the contact area that presses the field is not too large as in the case of the above-mentioned integrated float, it can be planted neatly without leaving the float traces tight in the field, and the accumulation of foreign substances Is also reduced. In addition, the configuration in which the adjacent floats 35 and 35 'swing simultaneously and integrally reduces the variation in the planting depth for each strip. Also, compared to a configuration in which many (three or more) sections are leveled with an integral float, the accumulation of foreign substances such as straw at the front of the float and the occurrence of mud pushing are reduced. Traces are hardly left.

Since the connecting member 94 is detachable from the side floats 35, 35 'by bolts, pins, engaging members, etc., when there are many foreign substances, the connecting member 94 is removed and the side float 35 is removed. 35, 35 'Prevents stagnation in the front. For example, when it is desired to have strong unevenness in the field and strong leveling is desired, and when there are few contaminants on the field, side floats are connected to improve the leveling performance. On the other hand, when the field is already leveled to some extent and there are many impurities on the field, the connection of the side float is released to prevent the accumulation of the impurities. That is, some of the impurities on the field, the hardness of the field,
Depending on the conditions of the field, such as leveling, the side float 35
By connecting and disconnecting 35 ', the configuration of the side floats 35 and 35' can be configured to enhance the leveling performance, or can be configured to emphasize the prevention of accumulation of contaminants. You can use them properly.

[0031]

The present invention is configured as described above.
The following effects are obtained. That is, while the base ends of a plurality of arms are fixedly mounted on a planting depth adjusting shaft which is rotatably supported laterally, a float is arranged below the planting depth adjusting shaft. And a bracket mounting surface is provided on the rear upper surface of the float, a bracket is provided on the bracket mounting surface, a fulcrum shaft is provided on the bracket, and the fulcrum shaft is connected to a tip of the arm. In the portion, the position of the bracket mounting surface is located forward of the fulcrum axis, so that the bracket mounting surface is not provided on the float lower surface in a region behind the fulcrum shaft, so that the leveling action is strong. Since the area where the float lower surface is in contact with the field can be ensured large in the above-mentioned region, the leveling action of the float is improved, and good planting becomes possible. Also, compared to a configuration in which the float is lengthened, the trace of the float is hardly left, and it is less likely to adversely affect adjacent seedlings when bent and planted.

In the planting section of a rice transplanter having a configuration in which a center float is arranged and two or more pairs of side floats are arranged symmetrically on the left and right sides thereof, the outermost side float is arranged. The rear end is located forward of the rear end of the side float that is one inside the float, so the side float that is one inside the outermost side float is longer. Since the long side floats are surely leveled, variations in the planting depth are reduced, and good planting is enabled.

According to a third aspect of the present invention, in the planting portion of the rice transplanter according to the second aspect, the rear end of the side float that is one inner side than the outermost side float has the rice transplanter turned with a minimum radius. In the case where the rear end of the outermost side float is in front of the trajectory drawn, if the aircraft must be planted while turning with a small radius, for example, even if it is planted on the shore with a sharp bend, the outermost As long as the side float is operated while being careful not to touch the shore, the side float inside one side does not touch the shore.
With the simple operation, the operator can reliably plant the plant at the very edge of the curved shore while maintaining the effect of the above. Even when turning with the minimum radius, the rear end of the side float that is one inner side of the outermost side float is located forward of the trail drawn by the rear end of the outermost side float. By operating the fuselage with the same attention, it is possible to plant the shore of any shape on the edge of the shore as far as the turning performance of the aircraft permits.

[Brief description of the drawings]

FIG. 1 is a side view showing the overall configuration of a rice transplanter provided with a planting section according to one embodiment of the present invention.

FIG. 2 is a plan view showing a configuration in which a rear part of a float is suspended from a main planting section.

FIG. 3 is a side view showing a configuration near a center float.

FIG. 4 is a side view showing a configuration near a second side float.

FIG. 5 is a side sectional view showing a case where a conventional bracket mounting configuration is applied to a first side float.

FIG. 6 is a side sectional view showing a case where the bracket mounting structure of the present invention is applied to a first side float.

FIG. 7 is a plan view showing the relationship between the positions of the rear ends of the first side float and the second side float.

FIG. 8 is a plan view showing the relationship between the locus drawn by the first side float and the position of the rear end of the second side float.

FIG. 9 is a plan view showing a configuration when the first side float and the second side float are connected.

[Explanation of symbols]

A Rice transplanter 1 Running part 4 Planting part 34 Center float 35 First side float (side float located one inside from outermost) 35 'Second side float (side float located at outermost) 38 Planting depth Height adjustment shaft 85 Support shaft 86 'Bracket 87 Arm (planting depth adjustment arm) 94 Connecting member P Rear end of first side float P' Rear end of second side float M Rice transplanter turned with minimum radius In case, the trail drawn by the rear end of the first side float

Claims (3)

[Claims] 1. The planting depth adjusting shaft, which is rotatably supported laterally, has bases of a plurality of arms fixed thereto, and a float is arranged below the planting depth adjusting shaft. A bracket mounting surface is provided on the rear upper surface, a bracket is provided on the bracket mounting surface, a fulcrum shaft is provided, and the fulcrum shaft is connected to a tip of the arm. The planting section of a rice transplanter, wherein the position of the bracket mounting surface is located forward of the fulcrum axis. 2. In a planting part of a rice transplanter having a configuration in which a center float is arranged and two or more pairs of side floats are arranged symmetrically on the left and right outer sides, the rear end of the outermost side float is A planting part for a rice transplanter, wherein the planting part is located forward of a rear end of a side float one inside of the float. 3. The transplanting part of a rice transplanter according to claim 2, wherein the rear end of the side float that is one inner side than the outermost side float is the outermost side when the rice transplanter turns with a minimum radius. The planting section of a rice transplanter, characterized in that the trailing edge of the side float is ahead of the locus drawn.