JP3859367B2 - Support structure of the seedling drive unit of the vegetable transplanter - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
In the vegetable transplanting machine, the present invention relates to a drive mechanism that vertically feeds a seedling tray placed on a seedling stand, a lateral feed drive mechanism of a seedling stand that slides horizontally and horizontally with respect to the longitudinal feed direction, and a seedling The present invention relates to an arrangement configuration of a seedling removal drive mechanism that extracts seedlings from a tray.
[0002]
[Prior art]
Conventionally, a seedling tray on which vegetable seedlings have been grown is placed on a seedling stand, and a slide shaft is installed horizontally on the rear of the machine, and a seedling stand is slidably placed on the slide shaft, and is fed laterally. The vegetable seedling is guided to the seedling picking position by driving, and the seedling tray is vertically driven at the end position of the left and right reciprocating movement of the seedling mounting table, and the vegetable seedling is taken out from the seedling tray by the seedling picking nail and placed in the transplanting nail A technique for inserting and rotating the transplanting claw and transplanting it to a farm field is known.
A drive case that houses a lateral feed drive mechanism that shifts the lateral feed drive of the seedling stage, a drive case that drives a seedling catch, and a drive that houses a vertical feed drive mechanism that transmits vertical feed to the seedling stage A separate drive case was provided for each case, and it was individually fixed on the frame on the aircraft side.
[0003]
[Problems to be solved by the invention]
In the prior art, when the drive cases are individually fixed to the machine body, naturally, the support member is also required, which increases the cost. In addition, the driving path for transmitting the driving force synchronized with each driving case is complicated, and the layout of the other transplanting claws and seedling mounts is restricted in order to place the driving case, and the entire body is enlarged. . In addition, it is necessary to perform the operation of aligning all phases of seedling claw drive, lateral feed and longitudinal feed after the assembly of each drive case to the machine body side, and each drive case is in a remote position and its power transmission configuration Was complicated and complicated.
In addition, the positional relationship between the seedling claw and the seedling platform and the positional relationship of the seedling platform with the horizontal feed shaft or vertical feed shaft are shifted due to mounting errors on the machine side of each drive case, distortion due to long-term use, etc. The seedling mount is not driven accurately, and there is a possibility that the seedling cannot be reliably taken out by the seedling picking claws.
[0004]
[Means for Solving the Problems]
The present invention uses the following means in order to solve the above problems. That is, in the vegetable transplanting machine that interlocks the lateral feed drive mechanism, the seedling claw drive mechanism and the vertical feed drive mechanism of the seedling platform, a support frame protrudes laterally from the drive case that houses the lateral feed drive mechanism, A longitudinal feed drive case is fixed to the end of the support frame, and the lateral feed drive case and the longitudinal feed drive case are integrally connected.
Further, an arm protrudes upward from one end of a drive case that houses the transverse feed drive mechanism, and a seedling-claw drive mechanism is supported on the upper part of the arm.
The seedling platform on which the seedling tray can be vertically fed is linked to the horizontal feed drive mechanism and slidably supported on the vertical feed drive shaft horizontally mounted on the machine body. In a vegetable transplanting machine in which a feed drive shaft is driven, a drive case that houses the lateral feed drive mechanism is disposed at a substantially central portion of the machine body, and a longitudinal feed drive mechanism is housed in a side of the drive case via a frame. A drive case is integrally fixed.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to the accompanying drawings. 1 is an overall side view of the vegetable transplanting machine, FIG. 2 is also a plan view, FIG. 3 is a side view of an integrated drive case that houses a drive mechanism for driving seedlings, and FIG.
[0006]
Next, the overall structure of the walking type vegetable transplanter of the present invention will be described. As shown in FIGS. 1 and 2, an engine frame 2 is arranged at the front part of the airframe, an engine 4 is placed on the engine frame 2, and a pulley is installed in a transmission case 3 fixed at the rear part of the engine frame 2, Power is transmitted through a belt or the like. Further, a main frame 1 is projected from the upper part of the mission case 3 to the rear. The main frame 1 has a plan view type structure, and has an open side end fixed to the left and right side surfaces of the upper part of the mission case 3, and the transplant part 5 and a seedling mounting table 34 to be described later are slid left and right inside the main frame 1. Arranged freely, the operation unit 6 is disposed at the rear end of the main frame 1. Further, the rear portion of the main frame 1 is curved in a U shape in a side view along the shape of the lower surface of the seedling table 34 so that the seedling table 34 can be easily assembled from the side.
Further, the upper side and the side of the engine 4 and the mission case 3 are covered with a cover 9. A spare seedling stand (not shown) can be fixed on both the left and right sides of the front of the machine body. The operation unit 6 is provided with a travel clutch lever, a work clutch lever, and the like.
[0007]
The traveling drive shafts 10 and 10 are projected from both lower sides of the transmission case 3, and the rear traveling drive cases 12 and 12 are pivotally supported by the traveling drive shafts 10 and 10 so as to be rotatable up and down. A sprocket is fixed on the travel drive shaft 10 in the rear travel drive case 12, and an axle 14 is pivotally supported on the other side of the rear travel drive case 12. Each has a sprocket fixed thereto, so that the traveling drive wheel 16 can be driven together with the axle 14 from the traveling drive shaft 10 via the sprocket and the chain.
Further, on the left and right sides of the front portion of the engine frame 2, front wheel support members 52 and 52 for supporting the front wheel 15 are pivotally supported. The front wheel support 52 and the rear traveling drive case 12 are linked and connected via a connecting rod 90. Further, one end of a vertical movement operation rod 91 is connected to the upper part of the rear traveling drive case 12 and the other end of the vertical movement operation rod 91 is connected to a lifting drive unit (not shown).
[0008]
Accordingly, the up / down drive unit is driven to move the left / right up / down operation rods 90 and 91 back and forth, and the rear traveling drive case 12 and the front wheel support 52 are rotated in conjunction with each other. By raising the body 52, the entire body can be raised and transplanted to a high heel, and conversely, the rear traveling drive case 12 and the front wheel support body 52 are horizontally laid to make a low heel. It becomes the applied height. On slopes, the aircraft can be kept horizontal by changing the left and right heights.
[0009]
Further, an elevating / closing mechanism 32 for the transplantation claw 31 is disposed between the front and rear central portions of the main frame 1, and the lower frame 37 projects rearward from the rear side surface of the transmission case 3, A cover ring 39 is provided. A second operation unit having a main transmission lever 73, a planting depth lever, a soil pressure adjustment lever, an inter-organization transmission lever, and the like is disposed above the soil covering wheel 39.
[0010]
The raising / lowering opening / closing mechanism 32 of the transplanting claw 31 is disposed at the rear part of the planting transmission case 45 protruding rearward from one side of the transmission case 3 (right side in this embodiment), and the chain, sprocket, etc. The power is transmitted through. Power is also transmitted from the transmission case 3 via the universal joint shaft 67 and the like to the lateral feed drive case 160 which is a seedling drive mechanism. A vertical feed driving force is transmitted to the seedling stage 34 from a lateral feed drive case 160 through a vertical feed drive case 204. This vertical feed driving force causes the seedling tray to be conveyed downward by a certain amount, and the seedling catching claw 66 that is driven to rotate conveys the seedling one by one from the seedling tray to the transplanting claw 31, thereby The soil is lowered, opened on the ridge, dropped and planted, and the soil on both sides is pressed by the cover ring 39 and transplanted.
[0011]
A seedling stage 34 and a seedling removal drive mechanism are arranged between the rear portions of the main frame 1.
First, the support structure of the seedling stage 34 will be described. The seedling stage 34 is arranged in an inclined shape in front and rear and rear height, and is laid out so as to make the overall length of the machine body as short as possible. The seedling stage 34 has a guide plate 120 on which a seedling tray is placed, side frames 121 and 121 that support the left and right sides of the guide plate 120, and a drive sprocket 126 that is loosely fitted on the front side of the side frame 121. A longitudinal feed drive shaft 123 formed in a polygonal shape is slidably fitted in the center of the drive sprocket 126. A driven sprocket 125 is pivotally supported in the middle of the front and rear sides of the side frame 121, and a chain 127 is wound around the driven sprocket 125 and the driving sprocket 126.
[0012]
In addition, a push pin (not shown) projects inward from the middle position of the chain 127, and the push pin is inserted between the pot holes on the front and rear of the seedling tray. When the chain 127 is driven, the push pin pushes the pot hole of the seedling tray forward from the rear, and passes between the upper presser bar 131 provided around the seedling mount 34 and the guide plate 120, The seedling tray T is vertically fed by the rotation of the vertical feeding drive shaft 123, and the seedling tray after the seedling is extracted is fed onto the lower presser bar 132.
[0013]
The seedling stage 34 is supported at its front part by a longitudinal feed drive shaft 123 so as to be slidable left and right. A midway part before and after the seedling stage 34 is supported by a guide frame 145 horizontally laid on the rear part of the main frame 1 to be slidable. A lower presser bar 132 of the seedling table 34 is firmly fixed to the side frame 121 by a stay (not shown), and a roller is pivotally supported in the middle of the front and rear of the lower presser bar 132 so as to be freely rotatable in the guide frame 145. The seedling table 34 is slidably supported by two portions of the vertical feed drive shaft 123 and the guide frame 145.
[0014]
Next, the configuration of the seedling removal drive mechanism of the present invention disposed between the rear portions of the main frame 1 will be described. As shown in FIGS. 1 to 4, a lateral feed drive case 160 is placed and fixed in the middle of the main frame 1 extending rearward from the left side of the mission case 3. A lateral feed shaft 85 projects from the right side of the lateral feed drive case 160 to the right. The lateral feed shaft 85 has a support frame 200 projecting rightward from the lateral feed drive case 160, a middle portion of the support frame 200 is fixed on the right main frame 1, and further extended rightward to extend to the right end. The pivot part 200a is formed by bending the part rearward, and a transverse feed shaft 85 is pivotally supported between the pivot part 200a and the transverse feed drive case 160. Therefore, the lateral feed shaft 85 is integrally supported by the lateral feed drive case 160.
[0015]
Further, a cylindrical frame 201 having higher rigidity than the left side surface of the lateral feed drive case 160 is extended to the right side, a mounting plate 202 is fixed to the left end portion of the cylindrical frame 201, and a vertical feed drive case 204 is attached to the mounting plate 202. Is fixed, and a longitudinal feed drive case 204 is disposed at the left end of the rear part of the machine body. That is, the longitudinal feed drive case 204 is integrally supported by the transverse feed drive case 160.
[0016]
A longitudinal feed drive shaft 123 is pivotally supported at the rear upper part of the longitudinal feed drive case 204, protrudes to the left, and is pivotally supported by the pivot portion 200a. The rear upper part of the vertical feed drive case 204 is supported by the pivoting portion 200a (support frame 200) via the vertical feed drive shaft 123, the vertical feed drive case 204 is formed as a frame, and is integrally connected to the lateral feed drive case 160. And rigidity is increased. Accordingly, the relative position between the transverse feed shaft 85 and the longitudinal feed drive shaft 123 is stably fixed, and the seedling stage 34 that slides left and right on the longitudinal feed drive shaft 123 is provided with the support frame 200 and the transverse feed drive case. 160 and a frame formed by the longitudinal feed drive case 204 can be stably supported. Therefore, the sliding of the seedling stage 34 is stabilized, and the interlocking connection with the slipper on the lateral feed shaft 85 is stabilized.
[0017]
The support frame 200 is formed by bending a plate body, and is composed of a highly rigid cylindrical pipe frame and a plate-like pivoting portion 200a fixed to the end of the pipe frame. It can also be set as the frame structure which supports the seedling mounting stand 34 with high rigidity.
[0018]
Here, the seedling feed drive mechanism in the lateral feed drive case 160 and the longitudinal feed drive case 204 will be described. Power is transmitted from the transmission case 3 to the transverse drive case 160. An L-shaped transmission case 162 is fixed to the left side of the left side surface of the transmission case 3, and seedling driving force is transmitted from the transmission case 162 to the universal joint shaft 67. The end of the universal joint shaft 67 is interlocked with an input shaft 161 protruding forward from the lateral feed drive case 160 to input seedling removal driving force.
[0019]
In the lateral feed drive case 160, a seedling collection input shaft 159 is supported in the left-right direction behind the input shaft 161, and a lateral feed intermediate shaft 154, a lateral feed shaft 85, and the like are parallel to the seedling collection input shaft 159. It is stored. The power transmitted to the input shaft 161 is transmitted to the seedling removal input shaft 159 via a bevel gear, and the intermediate feed gear 90/91 is disposed on the right side of the seedling collection input shaft 159 and the lateral feed intermediate shaft 154. The shaft 154 is intermittently driven. Several transmission gears are loosely fitted on the transverse feed intermediate shaft 154, and any one of the transmission gears is fitted into a shift key (not shown) and rotated together with the transverse feed intermediate shaft 154, and the left end portion of the transverse feed shaft 85. The driving force is transmitted to the speed change driven gear fixed to the side, and the lateral feed shaft 85 is intermittently driven according to the speed change amount. Then, the slider on the lateral feed shaft 85 is reciprocated to the left and right, the slider is interlocked with a receiving body (not shown) at the front of the seedling table 34, and the seed table 34 is intermittently reciprocated to the left and right. It is done.
[0020]
A vertical feed input shaft 180 is supported on the same axis as the horizontal feed shaft 85 below the vertical feed drive case 204, and the right end of the vertical feed input shaft 180 and the left end of the horizontal feed shaft 85 are cylindrical. These interlocking shafts 181 are interlocked so as to be relatively unrotatable, and intermittent driving is transmitted. The vertical feed input shaft 180 and the horizontal feed shaft 85 are connected via an interlocking shaft 181, and the power transmission configuration is simple compared to transmission by a chain and a sprocket, and transmission by a belt and a pulley. The number of points is small and the power transmission path is a small space. The layout of other seedling platforms 34 and the like is not limited, and the degree of freedom in design is increased.
[0021]
In the longitudinal feed drive case 204, two intermittent intermediate shafts 205 and 206, a longitudinal feed intermediate shaft 207, and a longitudinal feed drive shaft 123 are supported.
[0022]
Drive transmission from the longitudinal feed input shaft 180 to the intermittent intermediate shaft 205, from the intermittent intermediate shaft 205 to the intermittent intermediate shaft 206, and from the intermittent intermediate shaft 206 to the vertical feed drive shaft 123 is transmitted from a gear in which a part of the tooth surface is cut off. As the power is transmitted and the intermittent drive of the longitudinal feed input shaft 180 is transmitted, for example, while the upstream shaft is intermittently driven once, the driven shaft is rotated by a quarter. Therefore, the longitudinal feed intermediate shaft 207 is intermittently driven once only after the longitudinal feed input shaft 180 is intermittently driven a plurality of times. Therefore, the slider on the lateral feed shaft 85 moves intermittently a plurality of times to the left and right, and the longitudinal feed intermediate shaft 207 is intermittently driven when positioned at the end thereof.
[0023]
Then, the longitudinal feed drive shaft 123 is driven from the longitudinal feed intermediate shaft 207 via the longitudinal feed speed change mechanism 210, and the length of one pot hole of the seedling tray placed on the seedling placing table 34 is vertically increased. The feed is driven.
[0024]
Next, the arrangement configuration of the seedling claw drive mechanism 220 will be described. On the right side of the lateral feed drive case 160, an arm 213 projects from the front end of the seedling stand 34 in front of the seedling stand 34 in a side view, and a seedling claw drive mechanism 220 is formed on the arm 213. . A seedling claw drive mechanism 220 is disposed at a higher position than the front part of the seedling mount 34, and a driving locus of a seedling claw 66, which will be described later, is above the support frame 200.
[0025]
In addition, a seedling collection intermediate shaft 222 is pivotally supported on the middle of the arm 213, and a seedling harvesting output shaft 224 is pivotally supported on the upper portion of the arm 213. A seedling input shaft 159 pivotally supported in the lateral feed drive case 160 protrudes to the right side from the right side surface of the lateral feed drive case 160, and a sprocket 221 is fixed to the end. Transmission from the sprocket 221 to the sprocket 226 on the intermediate shaft 222 via the chain 225, and synchronization with the traveling drive from the sprocket 227 on the other end of the intermediate shaft 222 to the sprocket 230 on the seedling output shaft 224 via the chain 228 Power is transmitted.
[0026]
The seedling claw drive mechanism 220 includes a swing drive case 156 fixed to the other end of the seedling output shaft 224, a crank arm 157 pivotally supported at the end of the swing drive case 156, and an end of the crank arm 157. The swinging body 158 is pivotally supported, and the seedling catching claw 66 is fixed to the rear part of the swinging body 158.
[0027]
As the seedling output shaft 224 is driven, the swing drive case 156 rotates, and a crank arm 157 is moved with respect to the swing drive case 156 via a gear mechanism (not shown) in the swing drive case 156. The rotating body 158 rotates and causes the oscillator 158 to perform a crank motion. At this time, since the rear part of the rocking body 158 is guided by the groove of the guide body 229, the driving locus is drawn so that the seedling catching claw 66 takes out the seedling from the seedling tray on the seedling mounting base 34 and carries the seedling to the transplanting claw 31. It is.
[0028]
In this way, the seedling claw drive mechanism 220 serves as a support member for the chains 225 and 228 and the sprockets 226 and 227 as the power transmission mechanism and the arm 213 as the support member, and the power transmission configuration is a small space configuration. Since this is a chain transmission, there is little loss of power transmission, and the driving force synchronized with the traveling drive can be transmitted easily.
[0029]
Further, the seedling catching claw driving mechanism 220 is configured to support a part of the lateral feed driving case 160 on an arm 213 that extends forward and upward. The seedling catching claw driving mechanism 220 is integrated with the lateral feeding drive case 160. Thus, the mounting position of the seedling claw drive mechanism 220 is stabilized. That is, in the lateral feed drive case 160, the seedling stage 34 is integrally fixed to the frame via the support frame 200, and the seedling claw drive mechanism 220 is fixed to a part of the lateral feed drive case 160. The relative position of the seedling claw driving mechanism 220 with respect to the seedling mounting table 34 is stable without shifting, and the seedling can be reliably extracted with the driving locus of the seedling collecting claw 66 directed to the seedling tray on the seedling mounting table 34. Even if the pot hole of the seedling tray is small, seedling removal can be performed reliably.
[0030]
Further, the lateral feed drive mechanism 160 is housed in the transverse feed drive case 160, and the seedling claw drive mechanism 220 is fixed to a part of the lateral feed drive case 160, and the vertical feed drive mechanism is installed via the cylindrical frame 201. The longitudinal feed drive case 204 to be housed is fixed, and a drive case in which each drive mechanism is integrated is formed. In addition, an integrated drive case can be formed and adjusted for lateral feed, vertical feed, and seedling claw drive, and then assembled to the machine body, improving assembly at the factory. Furthermore, the drive cases 160 and 204 and the seedling claw drive mechanism 220 are integrated and have high rigidity, and even if they are used continuously, the relative position of each drive mechanism is small, and the work for synchronizing each drive mechanism is reduced. Can do. Further, the seedling stage 34 is supported by the integrated drive case via the support frame 200 and the like, and the seedling stage 34 and the seedling stage 34 are easily assembled as a unit on the machine body side.
[0031]
【The invention's effect】
Since the present invention is configured as described above, the following effects can be obtained. That is, in the vegetable transplanting machine in which the lateral feed drive mechanism, the seedling claw drive mechanism, and the vertical feed drive mechanism of the seedling stage are interlocked as described in claim 1, it is lateral to the drive case that houses the lateral feed drive mechanism. In order to store each drive mechanism, a support frame is provided on the end of the support frame, and a longitudinal feed drive case is fixed to the end of the support frame, and the transverse feed drive case and the longitudinal feed drive case are integrally connected. A separate drive case is provided, and a free layout is used so that the power transmission configuration to this separate drive case is simplified. It is easy to do.
[0032]
3. A drive case containing a transverse feed drive mechanism, as the arm projects above one end of the drive case containing the transverse feed drive mechanism and the seedling claw drive mechanism is supported on the upper part of the arm. The seedling catching claw drive mechanism can be supported integrally, and it is not necessary to provide a special support member, so that the number of parts can be reduced and the cost can be reduced. Furthermore, the relative positions of the seedling claw drive mechanism and the lateral feed drive mechanism are stably arranged without shifting, and power from the lateral feed drive mechanism to the seedling claw drive mechanism can be accurately transmitted. Then, the seedling picking claw drive mechanism is assembled to the drive case that houses this lateral feed drive mechanism, and the vertical feed drive case is further assembled into an integral seedling removal drive unit to synchronize the vertical feed, the lateral feed, and the seedling removal drive. After that, by assembling on the machine body side, it is possible to simplify assembly in the factory.
[Brief description of the drawings]
FIG. 1 is an overall side view of a vegetable transplanter.
FIG. 2 is a plan view of the same.
FIG. 3 is a side view of an integrated drive case that houses a drive mechanism for each seedling drive;
FIG. 4 is a plan sectional view of the same.
[Explanation of symbols]
34 Seedling stand 85 Horizontal feed shaft 123 Vertical feed drive shaft 160 Horizontal feed drive case 200 Support frame 200a Pivoting portion 201 Cylindrical frame 204 Vertical feed drive case 213 Arm 220 Seedling claw drive mechanism

Claims (2)

In a vegetable transplanting machine in which a horizontal feed drive mechanism, a seedling claw drive mechanism, and a vertical feed drive mechanism of a seedling platform are linked, a support frame protrudes laterally from a drive case that houses the transverse feed drive mechanism. A support structure for a seedling drive unit of a vegetable transplanting machine, wherein a vertical feed drive case is fixed to an end of a frame, and a lateral feed drive case and a vertical feed drive case are integrally connected. 2. A seedling removal drive unit for a vegetable transplanting machine according to claim 1, wherein an arm protrudes upward from one end of a drive case housing the lateral feed drive mechanism, and a seedling claw drive mechanism is supported on the upper part of the arm. Support structure.

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