JPH1052134A - Seedling transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seedlings transplanter capable of having relatively compact structure and desirably keeping a belt tension in a state capable of easily supplying seedlings, etc. SOLUTION: This apparatus has a belt-type longitudinal feeding device 8 feeding seedlings loaded on a seedling loading stage 3 to an underside seedling taking out port 4 and a belt 15 is wound around an under side driving pulley 13 and an upper side driven pulley 14 of the belt-type longitudinal feeding device 8. In this case, the driven pulley 14 is supported freely movably so as to be parted or approached from/to the driving pulley 13 and a tension applying means 25 applying tension to the belt 15 by giving energizing force to the driven pulley 14 in a direction separating from the driving pulley 13 is provided in a state of positioning within the wound region of the belt 15 in a side view.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling planting device such as a rice transplanter or a rush transplanter, and more particularly, to a belt-type vertical device for feeding a seedling placed on a seedling rest to a lower seedling outlet. The present invention relates to a seedling planting device comprising a feeding device, wherein the belt-type vertical feeding device is configured by winding a belt around a lower drive pulley and an upper idle pulley.

[0002]

2. Description of the Related Art Conventionally, in this kind of seedling planting apparatus,
Only about the lower half of the seedling stand had a belt-type vertical feeder installed. For this reason, a tension spring is wound around the belt to provide a tension applying means such as a spring for stretching the belt with a predetermined tension so that a slip or the like does not occur at the time of conveyance by the belt type vertical feeding device. 2. Description of the Related Art There is a known type in which an upper wheel is provided so as to be pulled upward.

[0003]

In recent years, it has been proposed to stretch a belt of a belt-type vertical feeder over substantially the entire area of a seedling mounting place of a seedling mounting table. In the conventional method, when tension is applied to the belt using a tension spring as in the related art, a member for locking one end of the tension spring is provided from the transport start end of the vertical feed of the seedling rest. It has to be provided in such a way that it separates and protrudes from the wrinkle, and it has been predicted that the seedling rest becomes large as a whole, and that the protruding member tends to be in the way, and it is difficult to replenish the seedlings.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and has a relatively compact construction and a seedling plant capable of maintaining a belt tension satisfactorily in a state where seedlings can be easily supplied. The purpose is to provide an attachment device.

[0005]

[Means for Solving the Problems]

(Structure) The seedling planting device according to claim 1 of the present invention includes a belt-type vertical feeding device that feeds a seedling placed on a seedling mounting table to a lower seedling outlet, and the belt-type vertical feeding device. A seedling planting device comprising a belt wound around a lower drive pulley and an upper idler pulley, wherein the idler pulley is movably supported with respect to the drive pulley. A tension applying means for applying a tension to the belt by applying a biasing force to the idle pulley in a direction away from the driving pulley is provided in a state where the tension applying means is located in a belt winding region in a side view. There is a characteristic configuration.

(Operation) According to the first aspect of the present invention, since the tension applying means is provided in a state where the tension applying means is located in the belt winding area when viewed from the side, the tension applying means is provided in the longitudinal conveyance direction. It is not necessary to provide a configuration for applying tension beyond the installation range.

(Effects) Therefore, according to the structure of the first aspect of the present invention, a member for locking, for example, a spring or the like is not provided beyond the belt installation range in providing the tension applying means. The vertical transfer device and the seedling rest can be made to have no protruding parts at the supporting points for tensioning such as springs, so that the whole seedling rest can be configured compactly and the seedling replenishment etc. is unobstructed. And improved its workability.

(Structure) According to a second aspect of the present invention, there is provided a seedling planting apparatus according to the first aspect, wherein a transport start end of the belt-type vertical feeding device is located near an upper end of the seedling rack. There is a characteristic configuration.

According to the second aspect of the present invention, the transportable range of the belt-type vertical feeding device extends from near the upper end of the seedling rest to near the seedling outlet at the lower end of the seedling rest. The seedlings can be given a longitudinal feed action over almost the entire range of the seedling rest, and can be reliably fed vertically as compared to those that simply slide the seedlings to feed the seedlings vertically. Seedlings can be planted in a state where the seedlings are reliably sent to the outlet.

(Effects) Therefore, according to the configuration of the second aspect of the present invention, since the reliability of seedling feeding is high, the possibility of occurrence of stock deficiency can be made extremely small and good. Planting is done.

(Structure) According to a third aspect of the present invention, in the seedling planting apparatus according to the first or second aspect, a plurality of the belt-type vertical feeding devices are arranged side by side on the right and left to mount the seedling rest. In addition to being equipped, a plurality of the belt-type vertical feeding devices are configured as a set of a pair of left and right inner right and left so as to apply tension by the tension applying means.

(Operation) According to the configuration of the third aspect of the present invention, the number of the tension applying means can be reduced as compared with the case where the tension applying means is provided for each belt type vertical feeding device. I have.

(Effects) Therefore, according to the configuration of claim 3 of the present invention, the number of tension applying means for applying tension to the belt can be reduced, so that the number of parts can be reduced and The cost can be reduced.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an example of a seedling planting device in a rush transplanter. The seedling planting apparatus 1 is mounted on a rear end portion of a riding traveling machine body on the left side of the figure so as to be capable of driving up and down via a four-link mechanism 2. And
This seedling planting apparatus 1 is configured for six-row planting, and the stocked rush seedlings F are mounted and intermittently fed laterally at a predetermined pitch, and are moved left and right at a constant stroke. The seedling rest 3, which is reciprocated and laterally moved, has a downwardly inclined posture, and a seedling planting tool 5 as a planting mechanism for taking out and planting one seedling from a seedling outlet 4 at the lower end of the seedling rest 3. The vehicle is provided with a transmission case D through which the power for driving the seedling planting tool 5 and the like is transmitted from the riding vehicle, a ground float 6 for leveling the planting surface of the field, and the like.

As shown in FIG. 3, the seedling gantry 3 is configured for six-row planting having six rows of each seedling mounting portion a corresponding to a planting streak. A partition wall 7 for partitioning the seedling mounting portions a inside the left and right ends of the seedling rest 3 is provided between the left and right ends of the seedling rest 3.
In addition, each of the seedling placing parts a is provided with a belt type vertical feeder 8 for feeding the rush seedlings F to the seedling outlet 4 by a certain distance each time the seedling placing table 3 reaches the stroke end of the left and right movement. It is. In the figure, 70 is a sensor for detecting the amount of seedlings.

In order to form the seedling planting tool 5, a planting claw 9 for taking out and planting a seedling of one strain and a seedling pushing tool 10 for pushing out the seedling held by the planting claw 9 at the time of planting are provided with a planting arm 11. , And the planting claw 9 is driven and rotated in a state of passing through the inside of the seedling taking out port 4 to plant a seedling. When the seedlings are taken out, the auxiliary claws 12 are provided before the planting claws 9 so as to protrude into the vicinity of the picked portion of the rush seedlings F on the seedling placing stand 3 and ensure the separation of the seedlings.

As shown in FIGS. 1 to 3, each of the belt-type vertical feeders 8 has a drive pulley 13 located at a low position near the seedling take-out port 4, and a drive pulley 13 located at a position substantially near the upper end of the seedling rest 3. The transport belt 15 is wound around the idle rotation pulley 14 so as to be stretched. That is, the seedling rest 3 itself is configured as a frame body in which the frame members are connected vertically and horizontally, and the partition walls 7 are fixed to the vertical frame members 3A along the vertical direction, and the vertical frames adjacent to the left and right sides thereof are fixed. The driving pulley 13 and the idler pulley 14 are provided on the members 3A, 3A in a state where they are pivotally supported, and the belt 15 is wound around the drive pulley 13 and the idler pulley 14.

A support structure is provided for supporting the seedling rest 3 on the machine body side, opposite to the place where the seedlings are placed on the seedling rest 3. That is, seedling rest 3
In each of the above vertical frame members 3A, a mounting member 16 made of sheet metal was provided by bolting at an upper portion opposite to the place where the seedlings were placed, and was made of an aluminum drawn material along the left and right direction across each mounting member 16. The rail bracket 17 is connected by bolts. The mounting bracket 16 and the rail bracket 17 are:
A bracket 18 is connected to the frame structure as the main body of the seedling rest 3 across the transport belt 15. Then, the guide groove 19 of the rail fitting 17 is formed with the guide groove 19 extending in the left-right direction that is recessed upward.
A support 22 made of a square pipe material provided with an engaged portion 20 that engages with a support 22 connected to the planting transmission case D by a bolt fastening. Although the lower part of the seedling rest 3 is not described in detail, it is supported by the planting transmission case D by a rail structure so as to be slidable left and right.

Further, as shown in FIGS. 2 and 7, a horizontal frame member 3B for connecting the upper end of the seedling rest 3 to the left and right is provided.
A cradle portion 24 made of a plate material capable of placing a seedling group supply box 23 for supplying a seedling group to the seedling mounting portion a of the seedling mounting table 3 under a load is provided by bolting. The cradle portion 24 is located above the upper end of the transport belt 15 and has an upper surface substantially along the transport surface of the transport belt 15. Therefore, when supplying a seedling group to the seedling mounting part a, as shown in FIG. 7, the load of the seedling group supply box 23 is left in the receiving portion 24 and the seedling group supply box 23 is placed in the seedling mounting box 23. After the slide is loaded in the placement section a, the front wall 23f of the seedling group supply box 23 is swung down and opened to open the seedling group supply box 23, and in this state, the seedling group supply box 23 is pulled backward, so that only the seedling group is placed in the seedling placement section a. Replenish above.

With the above configuration, the support member 21 for supporting the seedling rest 3 on the planting transmission case D as a fixing portion.
Since the transport start end of the transport belt 15 of the vertical feed belt transport device 8 is set higher than that of the upper alligator, the seedling mounting part a
The seedlings can be fed vertically by the transport belt 15 over almost the entire area of the range. Therefore, there is no need for a member for assisting the vertical feeding by pushing the seedling group downward, thereby simplifying the structure.

Next, the tension applying means 25 for applying tension to the belt 15 in the belt type vertical feeding device 8 will be described. As shown in FIGS. 1 to 6, of the six belt-type vertical feeding devices 8 arranged side by side on the left and right, a pair of three on the left and right sides is configured as a set so that tension can be applied. More specifically, a pair of left and right belt-type vertical feeders 8, 8
As a set, the idler pulleys 14 corresponding to the set are externally fitted to a single shaft body 26 so as to be able to rotate integrally or freely and freely. The portion between the idler pulleys 14 and 14 is rotatably supported by a shaft bracket 27 as shown in FIG.
Here, three pairs of left and right belt-type vertical feeders 8, 8 are arranged side by side. And
The shaft body 26 has left and right ends and both idler pulleys 1.
At a location between the four and fourteenth, the guide frame 28 is bolted to each of the vertical frame members 3A, and is inserted into a guide notch groove 29 formed along a vertical feed direction. The guide notch groove 29 allows the shaft body 26 to be slidably guided in the longitudinal feed direction and to be position-regulated in a direction perpendicular to the longitudinal feed direction. A pair of left and right vertical bar members 27B, 27B is provided on the horizontal bar member 27A constituting the shaft support 27.
The drive pulley 13 is provided in a state where the drive pulley 13 extends, and a lateral pin 31 for engaging one end of a spring 30 for applying tension to the belt 15 is continuously provided at the tip of each of the vertical bar members 27B, 27B. ing. This pin 31 is
A is inserted through the guide notch groove 33 of the second shaft guide fitting 32 bolted to A. This guide notch 3
3, the pin 31 can be slidably guided in the longitudinal feed direction and the position thereof is regulated in a direction orthogonal to the longitudinal feed direction. The shaft guide bracket 28 and the second shaft guide bracket 32 uses the same parts as shown in FIG. Further, in the state between the shaft guide fitting 28 and the second shaft guide fitting 32, the second horizontal pin 34 for locking the other end of the spring 30 is connected to the mounting bracket 16.
Are connected to each other by welding or the like. The spring 30 is formed of a tension spring, and is provided in a state where the spring 30 is located in a region where the belt 15 is wound around in a side view. That is, the spring 30 is located in a range surrounded by the transport action path for the seedlings of the belt 15 forming the endless rotation zone and the return path returning to the transport action path behind the transport action path. -ing
In addition, the vertical support member 27B is restricted in contact with the second guide member 32 in the left-right direction even if the shaft support member 27 is undesirably displaced left and right, so that a pair of left and right second guide members 32 is provided. , 32 is maintained at a constant position. Here, the second guide fitting 32 constitutes a lateral displacement restricting means, and the shaft support fitting 27 constitutes a belt tension member.

Next, the idle pulley 14 will be briefly described. As shown in FIG. 4, the idle pulley 14 of the belt type vertical feed device 8 in the seedling mounting portion a for one row has a single pulley material fitted around the shaft body 26 so as to freely rotate. Instead, a pair of left and right pulley members 35, 35 having the same shape are fitted around the shaft 26 in a freely rotatable manner in a state of being tightly contacted. The pair of left and right pulley members 35, 35 constitutes the idler pulley 14 because the idler pulley 14 made of a synthetic resin material is composed of a single pulley member. Is relatively large, so that it is a relatively long and complicated shape pulley material, and the mold to be formed is expensive, and the molding is difficult. As shown in FIG. 8, by forming the small diameter only near the abutting portion of the pair of left and right pulley members 35, 35, the belt is provided at the center of the left and right width on the inner surface side of the conveyor belt 15 in accordance with the small diameter portion S. It is also possible to adopt a configuration in which the ridge 36 formed along the rotation direction, that is, the vertical feed direction, can be engaged and guided. The drive pulley is also composed of a pair of left and right pulleys.

Next, the partition wall 7 will be briefly described. As shown in FIG. 1, the partition wall 7 is formed by sheet metal processing a stainless plate material into a box shape, and the upper end edge thereof is closed with a cap 37 made of synthetic resin to improve the appearance. In addition, the generation of rust and the like on the partition wall 7 is suppressed.

Next, the cotter pin structure of the seedling attachment 5 will be briefly described. As shown in FIG.
Arm 38 for oscillating the shaft is extended rearward from each transmission case 39 (the above-mentioned transmission case D), and is rotatable around a horizontal axis Q in a case where a chain transmission mechanism is provided. It is pivoting. The swing arm 38 is externally fitted to a rotation support shaft 40 that is supported by each of the transmission cases 39, and the rotation support shaft 40 and the swing arm 38 are fixed at a predetermined phase by a key 41. doing. Further, rattling between the swing arm 38 and the rotation support shaft 40, which is insufficient with the key 41, is prevented by the cotter pin 42. That is, a pin hole 43 having a tapered shape is formed in the swing arm 38 so as to partially intersect with the rotation support shaft 40, and a cotter pin 42 having a tapered shape is fitted into the pin hole 43. . The insertion of the cotter pin 42 is performed through a screw hole of a nut 44 welded in advance to the pin hole 43 entrance, and the cotter pin 42 is pushed into the pin hole 43 by a screwing operation of a bolt 45 fastened to the nut 44. I have. Since the cotter pin 42 can be pushed into the pin hole 43 by the screwing operation of the bolt 45, the cotter pin 42 can be worked in a narrower space than directly hitting the cotter pin 42 with a hammer or the like and fitting it into the pin hole 43, which facilitates work. ing.

Next, a mechanism for switching each belt type vertical feeder 8 between a drivable state and a non-drivable state will be described. As shown in FIG. 4 and FIG.
And a switching lever 55 supported on the rear side of the seedling rest 3 so as to be swingable around an axis X orthogonal to the belt conveying surface. 13, the tension of the belt 15 is relaxed by displacing the belt 15 so that the rotational force of the driving pulley 13 is not transmitted to the belt 15, and the idle rotation is performed by applying the tension force to the belt 15 by the urging force of the spring 30. The pulley 14 can be switched to a state in which the pulley 14 is located away from the drive pulley 13. To be more specific, the switching lever 55 is formed of the left and right vertical frame members 3A # on which a pair of left and right belt-type vertical feeding devices 8 and 8 are arranged, and which is the first one from the left in rear view. A support pin 57 is provided along the axis X on an erecting bracket 56 that is erectly connected to the second one, and the elongate hole 58 of the switching lever 55 formed by sheet metal is inserted into the support pin 57 for engagement. A third pin 27C protruding from a central portion in the left-right direction of the horizontal bar member 27A of the shaft support is loosely fitted into the hole 59 provided near the elongated hole 58. A sheet metal lever guide 60 for guiding the switching lever 55 is connected to the mounting bracket 56, and the switching lever 55 is moved between the belt relaxing position and the belt tensioning position by the lever guide 60. Guide and switching lever 55 in both positions
Can be held. Further, the switching lever 55
In the middle position of the ridge, a ridge-side clutch for the corresponding set of belt-type vertical feeders 8 and 8 (the planting mechanism 5 corresponding to each corresponding planting strip interposed in the transmission mechanism in the transmission case D). And a stop pin 62 for attaching a release wire 61 that is linked to perform an on / off operation. In the figure, 63
Is a sheet metal slack preventing member for receiving the slack belt 15 and restricting slack so that the back surface of each belt 15 does not sag downward when the belt 15 is slack at the back. The loosening prevention member is not limited to a sheet metal member, but may be formed by welding a bar or assembling the bar.

According to the above configuration, when the switching lever 55 is positioned at the lower holding position of the lever guide 60, the shaft support 27 is elastically urged upward by the urging force of the spring 30. Thereby, the belt 15
Is in a normal state in which the rotational force of the drive pulley 13 is transmitted to the belt 15. At this time, the planting clutch is also operated to the engaged state. On the other hand, when the switching lever 55 is positioned at the upper holding position of the lever guide 60, the spring 3
The shaft support 27 is displaced to the lower side against the urging force of 0, whereby the idler pulley 14 is positioned closer to the drive pulley 13, and the tension of the belt 15 is relaxed. Thus, the rotational force of the drive pulley 13 is not transmitted to the belt 15 due to slip or the like.
Therefore, for example, it is possible to switch the planting for two rows so that four rows can be planted, to stop the planting for four rows so that two rows can be planted, or to allow six rows to be planted.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view showing a seedling planting device of a rush transplanter.

FIG. 2 is a longitudinal side view showing a seedling mounting table.

FIG. 3 is a rear view showing a seedling mounting table.

FIG. 4 is a partially broken front view showing a seedling feeding belt and the like at an upper part of a seedling placing table.

FIG. 5 is a longitudinal sectional front view showing a seedling feeding belt and the like at an upper part of a seedling placing table.

FIG. 6 is a partially cutaway front view showing a shaft support.

FIG. 7 is a perspective view showing a seedling group supply box and an upper part of a seedling rest.

FIG. 8 is a partially broken front view showing another seedling feeding belt and the like.

FIG. 9 is a partially cutaway side view showing the structure of the driving arm of the auxiliary pawl.

[Explanation of symbols]

 3 Nursery stand 4 Nursery outlet 8 Belt type vertical feeder 13 Driving pulley 14 Floating pulley 15 Belt 25 Tension applying means

Claims (3)

[Claims] A belt-type vertical feeder for feeding seedlings placed on a seedling mounting table to a lower seedling outlet is provided, and the belt-type vertical feeder is connected to a lower drive pulley and an upper idler. What is claimed is: 1. A seedling planting device comprising a belt wound around a pulley, wherein the idler pulley is movably supported with respect to the drive pulley, and the idler pulley is separated from the drive pulley. A seedling planting apparatus, wherein tension applying means for applying a biasing force in a direction to apply tension to the belt is provided in a state where the tension applying means is located within a region where the belt is wound in a side view. 2. The seedling planting apparatus according to claim 1, wherein a transport start end of the belt-type vertical feeding device is located near an upper end of the seedling placing table. 3. A plurality of belt-type vertical feeding devices are provided side by side on a right and left side of the seedling rest, and a plurality of belt-type vertical feeding devices are provided as a pair of left and right inner belts. The seedling planting apparatus according to claim 1 or 2, wherein tension is applied by means.