JP2564874Y2 - Grass seedling trimming device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for trimming the root and stem of a rush seedling prior to transplantation using a transplanter.

[0002]

2. Description of the Related Art Japanese Patent Laid-Open No.
In the -108403 publication, a pair of upper and lower endless transport belts hold the stem portion of the grass seedling while transporting it in a direction intersecting the stem axis thereof. In the grass seedling trimming device configured to cut the tip, a pair of upper and lower endless endless conveyor belts for supporting roots are arranged between a pair of machine frames, and the stem of the tip of the grass seedling is pinched. It is disclosed that the endless conveyor belt is disposed outside the one machine frame. Further, a pair of disc cutters arranged so as to bite each other, which is a cutting means for cutting the stem on the tip side, is adjacent to the side edge of the endless transport belt sandwiching the stem on the tip side. Have been placed.

[0003]

The prior art does not disclose where the power transmission means for the endless conveyor belt and the disk cutter are located and the specific structure thereof. It is also disclosed that the pair of machine frames for the lower endless conveyor belt and the pair of machine frames for the upper endless conveyor belt have separate unit configurations, respectively, and can be individually attached to and detached from the base of the apparatus. It has not been. If the unit is not unitary and the unit is not detachable from the base or the like, for example, when replacing one endless transfer belt or disc cutter, the support shaft of the other endless transfer belt or the power transmission The mechanism also has to be disassembled, and there has been a problem that disassembly and assembly work is extremely troublesome.

An object of the present invention is to solve this problem with a simple configuration.

[0005]

In order to achieve the above object, the present invention provides a method for transporting a rush seedling in a direction intersecting the stem axis while holding the stem portion of the rush seedling by a pair of endless conveyor belt means. In a grass seedling trimming device configured to cut the lower root portion and ear tip of the grass seedling by cutting means, the endless transport belt means, cutting means, and a power transmission mechanism to them. A unit structure supported by a pair of support frames, and the pair of support frames in each unit structure are removably attached to the machine frame of the trimming device. And a meshing gear for transmitting power from the power transmission mechanism to the other power transmission mechanism.

[0006]

According to this configuration, a pair of endless transport belt means, cutting means, a power transmission mechanism for them, and a pair of support frames for supporting them on both sides of the transport surface of the grass seedlings. And a pair of units are detachably mounted on the machine frame. Since the meshing gear is used for power transmission from one unit to the other unit, the attachment and detachment of each unit can be executed completely independently for each unit.

Therefore, during the assembling work, parts can be assembled in advance for each of the units, and a mounting error between the parts can be corrected, so that the mounting accuracy is improved. Also, since a pair of units may be mounted on the machine frame, the units can be detached from each other even during disassembly work, and disassembly and assembly work becomes extremely easy.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will now be described with reference to the drawings. FIG. 1 is a left side view of an apparatus for trimming germ and seedlings, FIG. 2 is a front view taken along the line II-II of FIG. 3 is a right side view, FIG. 4 is a front view of a main part, FIG. 5 is a plan view of a lower endless transport belt, and FIG. 6 is a plan view of an upper endless transport belt.

The cutting and arranging apparatus 1 comprises a main unit A and a bogie unit B. The bogie unit B has a pair of front and rear downwardly bent U-shaped pipe-shaped frames 2a and 2b, and a lower end. And a pedestal 3 having caster wheels 6 on each frame 2
The pillars 3 are vertically movably fitted into the hollow pillar portions a and 2b, and the locking pins 5 are inserted into a plurality of pin holes 4 formed in the pillars 3 at different heights to adjust the height. Lock as much as possible.

The main unit A is supported by support members 7, 7 for connecting the pair of front and rear frames 2a, 2b on both left and right sides. In the main unit A, a pair of upper and lower endless conveyor belts, that is, a lower endless conveyor belt 8 and an upper endless conveyor belt 9 are disposed so that the supply port 10 is on the left side and the discharge port 11 is on the right side in FIG. Then, the pair of upper and lower endless transport belts 8 and 9 driven at the same speed sandwich the stem portion of the rush seedling I and transport it in a direction (substantially perpendicular direction) intersecting the stem axis. In this case, the upper and lower pair of endless transport belts 8 and 9 are arranged so that the transport surfaces are inclined so that the stem axis of the sprouts I is at an angle θ1 with respect to the horizontal plane (see FIG. 1). As a result, the rush seedling I can be conveyed in a state in which the tip side is directed upward toward the front side of the main unit A, and the root is positioned rearward and downward.

In the middle of the upper and lower pair of endless conveyor belts 8 and 9 in the conveying direction, cutting means 14a and 14b composed of upper and lower pair of disk cutters 12 and 13 are arranged on the front edge side and the rear edge side of the endless conveyor belt. Then, the lower root portion Ib and the tip portion Ia of the rush seedling I are cut and trimmed to a length L (see FIG. 7).
As described above, the stem axis of the rush seedling I is at an angle θ1 with respect to the horizontal plane, and the roots are located below, so that the degree of roots hanging down with respect to the stem axis is reduced, so that extra length is required. Of the lower root Ib can be surely cut.
Further, as mentioned above, the stem axis is inclined, and the tip part Ia of the seedling I protrudes outside the machine near the upper part of the frame 2a on the front side of the bogie part B, so that the front face of the main body part A is combined. It is possible to lower the height of the hand of the worker holding the spike portion Ia side of the grass seedling I on the side, and to improve the working efficiency by relaxing the worker's standing posture or sitting posture on a chair. it can.

As shown in FIG. 2, on the left side of the supply port 10, a supply guide slide 15 shaped like a letter when viewed from the front is provided, and a bracket 17 is provided on the left side of the cover body 16 of the lower endless conveyor belt 9.
On the rear end side of the supply guide slide 15 having the width dimension (W1), the abutment plate 18 extends obliquely upward at right angles to the upper surface thereof and extends in the direction of the supply port 10.
Is arranged, and the root of the seedling I placed on the supply guide slide 15 is brought into contact with the abutment plate 18. The abutment plate 18 is attached to the cover body 19 of the upper endless transport belt 8 and the cover body 1.
6 are slidably mounted on a pair of upper and lower guide rails 20 and 20 respectively fixed to the left side surface of the base 6, and are positioned by fixing means such as a wing nut to adjust the position of the cutting means 14b for cutting the lower root. Reference numeral 21 denotes a discharge guide for guiding the cut grass seedlings toward the storage box 22, and reference numeral 23 denotes a box for storing the cut and naturally dropped root lower part Ib (chips). The operator holds the tip of the germ seedling I by hand and attends to the outlet 11.

Next, the structure of the upper endless conveyor belt 8 and the lower endless conveyor belt 9 will be described with reference to FIGS. The lower endless transport belt 9 is supported by being wound around a driving wrapping support roller 24 on the downstream side (right side in FIG. 2) in the transport direction and a tension wrapping support roller 25 on the upstream side (left side in FIG. 2) in the transport direction. The lower drive shaft 27 of the wrapping support roller 24 is connected to the front and rear pair of lower support frames 26 and 2.
6 rotatably supported. The lower endless transport belt 9 is disposed between the front and rear pair of lower support frames 26, 26 such that the side edges thereof face each other. The lower support frame 2
Cutting means 14a, 14 rotatably supported by 6, 26
b, the large-diameter disk cutters 13, 13 outside the lower support frames 26, 26 (on the side opposite to the side edges of the lower endless transport belt 9 across the support frames 26). Is detachably fixed so as not to rotate.

The mechanism for transmitting power to the lower endless conveyor belt 9 and the disk cutters 13 and 13 is located outside the lower support frame 26 of the lower support frame which is located on the tip side of the seedling I and has the large diameter. (Outside the front side of the apparatus). That is, a lower endless power transmission mechanism is provided by a power transmission mechanism composed of a chain sprocket 28 attached to the lower drive shaft 27 and a chain 31 wound around a chain sprocket 30 of a drive motor 29 with a speed change mechanism arranged in the space inside the lower cover body 19. The conveyor belt 9 is driven. The chain sprocket 33 of the drive motor 29 and the chain sprocket 34 of the cutting lower drive shaft 32
And is driven to rotate via a chain 35 wound around the shaft.

On the other hand, a winding support roller 2 for tension
5 is rotatably supported on a support shaft 36, and front and rear long holes 3 formed at both ends of the support shaft 36 in lower support frames 26, 26.
7 and 37, the tension of the endless transport belt 9 is adjusted via tension means including a bracket 38 and an adjusting screw 39 attached to both ends of the support shaft 36. In this case, a tension means is provided so that the direction in which the endless transport belt 9 extends in the lower endless transport belt 9 on the side facing the upper endless transport belt 8 by tension is substantially parallel.

The idler roller 40 is located on the front side of the disk cutter 13 in the transport direction and
And the upper disk cutter 12 are positioned near an overlapping portion (a cut portion substantially along the transport direction), thereby restricting the position of the sprouts I at the time of cutting to the radial center side of the disk cutter 13 and cutting. The effect can be improved. A guide support plate 57 is attached to the outside of the rear lower support frame 26 via bolts 58 and brackets 59, and the root Ib conveyed to the guide support plate 57 rides thereon, whereby the root Ib is moved along the stem axis. Can be prevented from drooping at a large angle with respect to, and the cutting can be further ensured.

As described above, the lower endless conveyor belt 9, the winding support rollers 24, 25, the intermediate idler roller 40, the disk cutter 13, and the power transmission mechanism for these are mounted on the pair of lower support frames 26, 26. A pair of lower support frames 26, 26 of this unit is attached to brackets 70a, 70b having an L-shaped cross section, which are fixed to the machine frame of the main unit A via bolts 71, 71. (See FIG. 4).

The upper endless conveyor belt 8 is divided into an upper root side conveyor belt 8a and an upper tip side conveyor belt 8b in the longitudinal direction of the belt. 42 is a pair of upper and lower support frames 4
3, 43, and is rotatably supported by the upper root side conveyor belt 8 a between the front and rear upper support frames 43, 43.
And the upper spike side conveying belt 8b are positioned. In addition, the cutting upper drive shaft 4 of the cutting means 14a, 14b
6, a small-diameter disk cutter 12, 1 outside the upper support frames 43, 43 (on the side opposite to the side edge of the upper endless transport belt 8 across the support frame 43).
2 is fixed detachably and non-rotatably.

The mechanism for transmitting power to the upper endless conveyor belt 8 and the disk cutters 12, 12 is located outside the lower support frame 26 located on the tip side of the grass seedling I among the lower support frames, and It is arranged outside the large-diameter disk cutter 13 (on the front side of the apparatus).
That is, the gear 44 attached to the upper drive shaft 42 meshes with the gear 45 attached to the lower drive shaft 27, and is driven to rotate in a predetermined direction. Also, the upper drive shaft 42 and the cutting upper drive shaft 46
A power transmission mechanism is configured such that the power transmission mechanism is interlocked via the chain 47 and the chain sprockets 48 and 49.

The middle idler roller 50 in the upper endless transport belt 8 is separated into a small-diameter roller 50b on the root side and a large-diameter roller 50a on the tip side, and each is rotatably supported by a support shaft 51 so as to be independently rotatable. ing. The idler roller 50 is connected to the disk cutters 12, 12.
The idler roller 4 is viewed from the side further upstream of the conveyance.
0, and is disposed close to the lower endless conveyor belt 9. On the other hand, the wrapping support roller 52 for tension on the upstream side in the conveyance direction is disposed at a position away from the lower endless conveyance belt 9, and is provided by the endless conveyance belt 8 from the wrapping support roller 52 to the idler roller 50. The direction of extension of the transport surface is configured to widen and incline (angle θ2) toward the transport upstream side (supply side) with respect to the transport direction of the lower endless transport belt 9.

A support shaft 53 rotatably supporting the wrapping support roller 52 is slidably supported by a long hole 54 formed in the upper support frames 43 so as to be pulled in the direction of the inclination angle θ2. The tension of the endless transport belt 8 is adjusted via tension means including a bracket 55 and an adjusting screw 56 attached to both ends of the support shaft 53. As described above, the upper endless transport belt 8, its supporting rollers 41 and 52, the intermediate idler roller 50, the disk cutters 12, 12, and the power transmission mechanism for these are mounted on the pair of upper supporting frames 43, 43. The upper and lower pair of upper support frames 43, 43 of this unit are fixed to brackets 72a, 72b having an L-shaped cross section and fixed to the machine frame of the main unit A by bolts 73, 73.
(See FIG. 4).

In this configuration, the intermediate idler rollers 50 and 40 of the pair of endless conveyor belts 8 and 9 driven at the same speed are arranged in a non-opposed manner on the upstream side of the cutting means in the conveyance. As shown in FIG.
The action of preventing the endless transport belts 8 and 9 from loosening when transporting while nipping is performed, and the action of preventing the grass seedlings to be nipped from escaping to the cutting position by the roller cutter blades 12 and 13. Both have the effect of not being damaged.

Further, the idler roller 50 is moved from the wrapping support roller 52 on the upstream side of the upper endless conveying belt 8 to the conveying side.
The direction of extension of the transport surface by the endless transport belt 8 up to the transport upstream side with respect to the transport direction by the lower endless transport belt 9 is greatly inclined.
Since the winding support roller 52 is separated from the lower endless transport belt 9 and the idler roller 50 is arranged so as to approach the lower endless transport belt 9, the lower endless transport belt 9 is provided on the upstream side of the transport, which is a supply section of the rush I. The gap can be largely opened so that the conveying surface of the upper endless conveying belt 8 is inclined at a large angle with respect to the upper endless conveying belt 8. Therefore, it is easy to supply the rush seedlings to the supply port 10 of the main unit A, and it is easy to pinch them.

In addition, the position of the intermediate idler roller 50 in the upper endless transport belt 8 is determined by the cutting means 14a,
With a configuration in which the tension means for the winding support roller 52 for tension and the tension means for the winding support roller 25 for tension in the lower endless conveyor belt 9 are fixedly positioned on the upstream side of the conveyance from the position 14b, and Since the inclination angle θ2 of the conveying surface on the supply side does not change, the two operations (the operation for preventing the endless conveyor belt from being slack when the rush seedling is conveyed while being pinched) without increasing the number of idler rollers installed. Thus, there is no change in the action of preventing the grass seedlings I to be held from escaping to the cut portion, thereby simplifying the configuration and reducing the manufacturing cost.

It should be noted that the positions of the transport upstream wrapping support roller 25 and the transport downstream wrapping support roller 24 of the lower endless transport belt 9 are changed to the corresponding transport upstream wrapping support roller 52 of the upper endless transport belt 8. By arranging it so that it protrudes forward and backward from the position of the downstream side wrapping support roller 41 in the transport direction, it becomes easy to carry in the grass seedlings I at the supply port 10, while a pair of endless transport belts is provided at the discharge port 11. The dispersal phenomenon caused by the sudden discharge of the grass seedlings I to be pinched at 8 and 9 can be eliminated and the grass seedlings I can be discharged smoothly.

In the above-described embodiment, the ratio of the number of teeth of the gears 44 and 45 is set to be the same, and the transport driving speeds of the upper and lower endless transport belts 8 and 9 are set to be the same. Large diameter disk cutter 1
The peripheral velocities of the disc cutters 12 and 12
From the drive motor 29 so as to be higher than the peripheral speed of the chain sprockets 28, 3 in the power transmission mechanism.
The tooth number ratio of 0, 33, 34, 44, 49 is set.

With this configuration, the seedlings I that are nipped and transported by the pair of endless transport belts 8 and 9 come into contact with the outer periphery (blade portion) of the large-diameter disc cutter 13 first. Therefore, by increasing the peripheral speed of the large-diameter disk cutter 13, the sharpness of cutting the seedlings I that first come into contact with the disk cutter 13 is improved. Then, the tip part Ia (stem part) and the lower root part I of the plant I
After cutting b to some extent, small-diameter disc cutter 1
2 is completely cut at the engaging portion with 2, and a load does not act on the pair of disk cutters 12 and 13 at the same time. Therefore, the driving power source of the driving motor 29 does not need to instantaneously output a large power. The power source can be made with a small horsepower. Therefore, there is an effect that the size and cost of the device can be reduced.

Even if the lower drive shaft 34 and the upper drive shaft 46 are set to the same rotational speed, the large-diameter disc cutter 1
Naturally, the peripheral speed of No. 3 can be made higher than the peripheral speed of the small-diameter disk cutter 12. Accordingly, as described above, the power transmission mechanism for providing a difference in the peripheral speed between the large and small disk cutters is also simplified. In addition, if the pair of endless conveyor belts are arranged vertically so as to sandwich the grass seedling I up and down, and the large-diameter disc cutter 13 is arranged so as to be in contact with the lower side of the grass seedling, sharpness is further improved. improves.

Further, as described above, the endless transport belt 8 is disposed between the upper and lower support frames 26, 26, 43, 43.
9 and the disk cutters 13 and 12 are disposed outside the support frames 26 and 43, and the endless transport belts 8 and 9 are transported with the disk cutters 12 and 13 under the condition that the widths of both endless transport belts 8 and 9 are increased. , 9 can be brought close to each other, so that the pinching / conveying force of the grass seedlings I is not weakened and chips can be prevented from being clogged between the endless conveying belt and the disk cutter. Since the lower part of the grass seedling is soft but sticky, the disc cutter for cutting that portion is liable to be worn, so that the frequency of replacement is high. However, the support frames 26, 4 arranged on the rear side of the device are used.
Since the pair of disc cutters 21 and 13 for cutting the lower root Ia are detachably mounted on the outside of the base 3, the replacement work of the disc cutters 12 and 13 becomes extremely easy.

Further, the power transmission mechanism is disposed outside the pair of disk cutters 12 and 13 for cutting the tip side of the rush seedling I as described above, and its position is the upper position which is the tip side. Since the chips of the grass seedlings I, especially the chips at the bottom of the root, do not fall on the power transmission mechanism, it is possible to prevent the chips from being entangled with the power transmission mechanism and to easily repair the power transmission mechanism. Play.

In order to prevent the lower endless conveyor belt 9 and the upper endless conveyor belt 8 from meandering, as shown in FIGS. 5 and 6, the winding support rollers 24, 25, 41, 52 and idler rollers 40, 50 are used. Is provided with a convex annular ring portion 60 on the outer peripheral surface of the cylinder by welding or the like. This has the same effect as providing a crown (a state in which the diameter of the middle part in the longitudinal direction of the cylinder is larger than the diameters of both ends of the cylinder) on the circumferential surface of each of the winding support rollers. It is possible to prevent the transport belt from contacting one of the support frames and the like, and to prevent the transport belt from traveling in a meandering manner, thereby avoiding damage to the endless transport belt. In particular, when the upper endless transport belt 8 of the above embodiment is divided into two parts, 8a and 8b, the inconvenience of adjacent belt portions running on the other side can be eliminated.

As can be understood from FIGS. 5, 6, 9 and 10, the disk cutters 12 and 13 in the cutting means 14a and 14b are provided outside the upper frame 43 and the lower frame 26, respectively. 32 are detachably attached to both ends. In this case, it is necessary to fix the disk cutters 12 and 13 to the drive shafts 46 and 32 so as not to rotate in order to facilitate the work of replacing the disk cutters. Therefore, the drive shaft 4 having a round shaft shape
The both ends 61, 61 are formed in a rectangular (square) cross section, and a sleeve 63 having a square inner diameter hole 62 is fitted to the end 61. The outer periphery of the sleeve 63 has a hexagonal cross section, and has a flange portion 64 at an intermediate portion in the length direction of the outer periphery. The inner diameter holes of each of the disk cutters 12 and 13 are formed as hexagonal holes so as to be fitted on the outer peripheral surface of the star portion 64, and the side surfaces of the disk cutters 12 and 13 abut against the disk surface of the flange portion 64. The disc cutter is held down by bolts 66 and collars 67 which are attached to screw holes 65 formed in the end face. When the chain sprockets 49, 34 are detachably mounted on the outside of the disk cutters 12, 13, the square end 6 projecting from the inner diameter hole 62 of the sleeve 63 is used.
1, a chain sprocket 49 having a square hole
34, the other side of the disk cutters 12, 13 is pressed by the boss of the chain sprocket, and the outer side of the chain sprocket is clamped and fixed between the bolt 66 and the collar 67 (see FIGS. 9 and 10). ). According to the configuration described above, the drive shafts 46 and 32 are made to be round shafts, and the sleeve 63 having a non-circular outer periphery is interposed.
It is possible to increase the non-circular inner diameter holes of the disk cutters 12 and 13 to improve the transmission of rotational force (reduce the surface pressure with the shaft at the inner diameter holes), and to prevent the disk cutter from swinging.

[Brief description of the drawings]

FIG. 1 is a left side view of a device for trimming rush seedlings.

FIG. 2 is a front view taken along the line II-II of FIG.

FIG. 3 is a right side view of the same.

FIG. 4 is an enlarged front view of a main part of the main unit.

FIG. 5 is a partially cutaway plan view of the lower endless transport belt.

FIG. 6 is a partially cutaway plan view of the upper endless transport belt.

FIG. 7 is an explanatory diagram showing trimming of rush seedlings.

FIG. 8 is an explanatory diagram showing a state in which rush seedlings are transported by upper and lower endless transport belts.

FIG. 9 is an enlarged sectional view of a main part showing a disk cutter mounting part.

FIG. 10 is a perspective view of the same.

[Explanation of symbols]

Reference Signs List A Main unit B Cart unit I Grass seedling 1 Trimming device 2a, 2b Frame 3 Pillar 8 Upper endless conveyor belt 9 Lower endless conveyor belt 10 Supply port 11 Outlet 12 Upper disk cutter 13 Lower disk cutter 14a, 14b Cutting means 15 Supply guide slide 16, 19 Cover body 18 Backing plate 24, 25, 41, 52 Wrapping support roller 26 Lower support frame 29 Drive motor 32, 46 Drive shaft 28, 30, 33, 34, 44, 49 Chain sprocket 31, 35, 47 Chain 40, 50 Idler roller 43 Upper support frame 44, 45 Gear 60 Ring part 63 Sleeve 70a, 70b, 72a, 72b Bracket 71, 73 Bolt

Claims (1)

(57) [Scope of request for utility model registration] 1. A pair of endless conveyor belt means for holding a stem portion of a rush seedling and transporting the stalk portion in a direction intersecting the stem axis thereof. In the grass seedling trimming device that is configured to cut, the endless transport belt means and the cutting means and the power transmission mechanism to them, and a unit configuration supported by a pair of support frames, respectively, The pair of support frames in each unit configuration are detachably mounted on the machine frame of the trimming device, and the two units are configured to transmit power from the one power transmission mechanism to the other power transmission mechanism. A cutting and aligning apparatus for grass seedlings, comprising a meshing gear.