JPH0555815U - Rush seedling trimming device - Google Patents

Abstract

(57) [Abstract] [Purpose] To facilitate the work of exchanging the pair of disc cutters 13 and 12 for cutting the rush seedling I in the rush seedling trimming device, and to the disc cutter and the endless conveyor belts 9 and 8. Prevents chips from entangled with the power transmission mechanism of. [Structure] The respective endless conveyor belts 9 and 8 are arranged between a pair of support frames 26, 26, 43 and 43, respectively, and on the outer side opposite to the position of the endless conveyor belt with the support frames 26 and 43 interposed therebetween. A pair of front and rear cutting means 14 composed of a pair of disk cutters 13 and 12 which rotate in opposition to each other.
a and 14b are provided, and a power transmission mechanism including a chain, a chain sprocket, and the like for the cutting means and the endless conveyor belt is provided outside the support frames 26 and 43 with the disc cutters 13 and 12 interposed therebetween. To do.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a device for trimming roots and stems of rush seedlings prior to transplantation using a transplanter.

[0002]

[Prior Art]

 As a prior art of this kind of device, in Japanese Patent Laid-Open No. 3-108403, a pair of upper and lower endless conveyor belts sandwiches a stalk portion of a rush seedling and conveys it in a direction intersecting with the stem axis line thereof. In an aligning device for locust seedlings configured to cut the lower root portion and the tip of the rush seedling by a cutting means, a pair of upper and lower endless conveyor belts for root support are arranged between a pair of support frames. However, it is disclosed that an endless transport belt for sandwiching the stalk on the tip side of the rush seedling is arranged outside the one support frame. Further, a pair of disc cutters, which are cutting means for cutting the stalks on the tip side and arranged so as to face each other, are adjacent to the side edges of the endless conveyor belt that holds the stalks on the tip side. Are arranged.

[0003]

[Problems to be solved by the device]

 By the way, the prior art does not disclose which of the power transmission means to the endless conveyor belt and the disc cutter. In the above-mentioned prior art, in order to facilitate the replacement work of the disc cutter, if the power transmission means is arranged between the disc cutter and the endless conveyor belt, the mosquito seedlings are likely to be entangled with the power transmission means and the seedlings are damage. In addition, the width of the endless conveyor belt must be narrowed due to the width of the power transmission section, which causes a problem that the endless conveyor belt has a weak gripping and conveying force for grass seedlings. The present invention aims to solve this problem with a simple configuration.

[0004]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention provides a pair of endless conveyor belts for sandwiching the stalks of rush and transporting them in a direction intersecting with the stem axis line. In an aligning device for rush seedlings configured to cut the lower roots and the tips of the ears, the endless conveyor belts are arranged between a pair of supporting frames, and the supporting frames are sandwiched between the endless conveyor belts. The cutting means constituted by a pair of disc cutters that rotate in opposition to each other are provided on the outer side of the position opposite to, and the power transmission mechanism to the cutting means and the endless conveyor belt is sandwiched between the disc cutters. And is disposed on the outer side opposite to the supporting frame.

[0005]

[Operation and effect of the device]

 With this configuration, since the pair of disc cutters are arranged outside the side edges of the endless conveyor belt with the pair of support frames interposed therebetween, the gap between the side edges of the endless conveyor belt and the disk cutter can be reduced. In other words, under the condition that the width dimension of the endless conveyor belt is increased, the endless conveyor belt can be cut by the pair of disc cutters while being conveyed with a strong holding force. Further, since the power transmission mechanism for the disc cutter and the endless conveyor belt is arranged outside the disc cutter, the risk of sewage of turfgrass seedlings being entangled with the power transmission mechanism is reduced, and the trouble of transport jamming is also reduced. It has the effect of decreasing the number.

[0006]

【Example】

 An embodiment embodying the present invention will now be described with reference to the drawings. Fig. 1 is a left side view of a cutting and aligning device for grass seedlings, Fig. 2 is a front view taken along the line II-II of Fig. 1, and Fig. 3 is a right side view. 4 and 5 are plan views of a lower endless conveyor belt, and FIG. 6 is a plan view of an upper endless conveyor belt.

The cutting and aligning device 1 for rush and seedlings is composed of a main body unit A and a trolley unit B. The trolley unit B has a pair of front and rear pipe-shaped frames 2a and 2b bent downward in a U-shape and a lower end. A pedestal 3 provided with caster wheels 6, and the pedestal 3 is vertically movably fitted into the hollow columns of the frames 2a and 2b, and the pedestal 3 is drilled at different height positions. The locking pin 5 is inserted into the plurality of pin holes 4 and the height is adjusted so that the locking can be achieved.

The main unit A is supported by support members 7, 7 that connect the front and rear frames 2 a, 2 b on both left and right sides. In this machine section A, a lower endless conveyor belt 8 and an upper endless conveyor belt 9 are arranged so that the supply port 10 is on the left side and the discharge port 11 is on the right side in FIG. With the endless conveyor belts 8 and 9, the stem portion of the rush seedling I is sandwiched and conveyed in a direction intersecting the stem axis line (a substantially right angle direction). In that case, the pair of upper and lower endless conveyor belts 8 and 9 are arranged so that the conveyor surfaces thereof are inclined so that the stem axis of the grass seedling I is at an angle θ1 with respect to the horizontal plane (see FIG. 1). As a result, the tip of the rush seedling I can be conveyed in a state in which the tip end side is directed upward toward the front side of the machine unit A and the root part is rearward and downward.

Cutting means 14a and 14b composed of a pair of upper and lower disc cutters 12 and 13 are arranged on the front edge side and the rear edge side of the endless conveyor belts in the middle of the upper and lower endless conveyor belts 8 and 9 in the conveying direction. Then, the root lower part Ib and the tip part Ia of the rush seedling I are cut and cut to a length L (see FIG. 7). As described above, the stem axis of the rush plant I has an angle θ1 with respect to the horizontal plane, and the root portion is located downward, so that the root is less likely to hang downward with respect to the stem axis. It is possible to reliably cut the lower part of the root Ib of various lengths. Furthermore, as described above, the stalk axis is inclined, and the tip portion Ia of the rush seedling I is projected to the outside of the machine near the upper side of the frame 2a on the front surface side of the bogie portion B. It is possible to lower the height of the hand of the worker who holds the tip Ia side of the rush seedling I on the front side of A, and makes it easier for the worker to stand or sit on a chair to improve work efficiency. Can be improved.

As shown in FIG. 2, on the left side of the supply port 10, a feed guide slide 15 having a letter-shape in a front view is fixed to the left side surface of the cover body 16 of the lower endless conveyor belt 9 via a bracket 17. On the other hand, on the rear end side of the supply guide slide 15 having the width dimension (W1), a contact plate 18 is arranged so as to extend obliquely upward at a right angle to the upper surface thereof and to extend in the direction of the supply port 10, and supply is performed. The root portion of the rush seedling I placed on the guide slide 15 is brought into contact with the pad plate 18. The contact plate 18 is slidably attached to a pair of upper and lower guide rails 20 and 20 fixed to the cover body 19 of the upper endless conveyor belt 8 and the left side surface of the cover body 16, respectively, and is fixed by a fixing means such as a wing nut. After the positioning, the cutting means 14b for cutting the roots is positioned and adjusted. Reference numeral 21 is a discharge guide for guiding the cut rush seedlings toward the storage box 22, and reference numeral 23 is a box for storing the cut lower part Ib (shavings) which is naturally dropped. The operator holds the tip of the rush seedling I by hand and accompanies the outlet 11.

Next, the structures of the upper endless conveyor belt 8 and the lower endless conveyor belt 9 will be described with reference to FIGS. 2 and 4 to 6. The lower endless conveyor belt 9 is wound around a drive winding support roller 24 on the downstream side (right side in FIG. 2) in the transport direction and a winding support roller 25 for tension on the upstream side (left side in FIG. 2) in the transport direction. The lower drive shaft 27, which is hung and supported, on the wrapping support roller 24 is rotatably supported by the front and rear lower support frames 26, 26. The lower endless conveyor belt 9 is arranged between the front and rear lower supporting frames 26, 26 so that their side edges face each other. The cutting lower drive shaft 32 in the cutting means 14a, 14b rotatably supported by the lower support frames 26, 26 is provided outside the lower support frames 26, 26 (the lower endless transport belt 9 with the support frame 26 sandwiched therebetween). At the side opposite to the position of the side edge), the large-diameter disk cutters 13 and 13 are detachably and non-rotatably fixed.

The power transmission mechanism to the lower endless conveyor belt 9 and the disk cutters 13 and 13 is outside the lower support frame 26 located on the tip side of the rush seedling I of the lower support frame and has the large diameter. It is placed on the outside of the disc cutter 13 (front side of the device). That is, the chain sprocket 28 mounted on the lower drive shaft 27 and the chain sprocket 30 of the drive motor 29 with a speed change mechanism arranged in the inner space of the lower cover body 19 are wrapped around the chain 31 to form a lower power transmission mechanism. The endless conveyor belt 9 is driven. Then, the chain sprocket 33 of the drive motor 29 and the chain sprocket 34 of the cutting lower drive shaft 32 are rotationally driven via a chain 35 wound around the chain sprocket.

On the other hand, a tension winding support roller 25 is rotatably supported by a support shaft 36, and both ends of the support shaft 36 are respectively provided in front and rear elongated holes 37, 37 formed in the lower support frames 26, 26. While it is slidably supported, the tension of the endless conveyor belt 9 is adjusted through the tension means composed of brackets 38 attached to both ends of the support shaft 36 and adjusting screws 39. In that case, the tension means is provided so that the extending direction by the tension of the endless transport belt 9 is substantially parallel to the transport surface of the lower endless transport belt 9 facing the upper endless transport belt 8.

When the idler roller 40 is positioned on the front side of the disc cutter 13 in the transport direction and in the vicinity of the overlapping portion of the disc cutter 13 and the upper disc cutter 12 (cutting point substantially along the transport direction), It is possible to prevent the position of the rush seedling I from shifting toward the center of the radius of the disc cutter 13 and improve the cutting action. The guide support plate 57 is attached to the outside of the rear lower support frame 26 via the bolts 58 and the brackets 59, and the root lower part Ib conveyed to the guide support plate 57 rides on the lower part of the root lower part Ib. It is possible to prevent drooping at a large angle with respect to the axis, and the cutting is more reliable.

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. The drive shaft 42 is rotatably supported by a pair of front and rear upper support frames 43, 43, and the upper root side conveyor belt 8a and the upper tip side conveyor belt 8b are interposed between the pair of front and rear upper support frames 43, 43. So that is located. Further, the cutting upper drive shaft 46 of the cutting means 14a, 14b is provided outside the upper support frames 43, 43 (on the side opposite to the side edge position of the upper endless conveyor belt 8 with the supporting frame 43 interposed therebetween). The small-diameter disk cutters 12, 12 are detachably fixed so as not to rotate.

The power transmission mechanism to the upper endless conveyor belt 8 and the disc cutters 12 and 12 is outside the lower support frame 26 located on the tip side of the rush seedling I of the lower support frame, In addition, it is arranged outside the large-diameter disk cutter 13 (on the front side of the device). 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 rotationally driven in a predetermined direction. Further, the power transmission mechanism is configured so that the upper drive shaft 42 and the cut upper drive shaft 46 are interlocked via the chain 47 and the chain sprockets 48, 49.

In the above-described embodiment, the gear ratios of the gears 44 and 45 are set to be the same, and the conveyance driving speeds of the upper and lower endless conveyance belts 8 and 9 are set to be the same, while the cutting means 14a and 14b. So that the peripheral speed of the large-diameter disk cutters 13 and 13 in FIG. 2 may be higher than the peripheral speed of the small-diameter disk cutters 12 and 12, from the drive motor 29 to the chain sprocket 28, 30, 33, 34, in the power transmission mechanism. Set the tooth ratio of 44, 49.

According to this structure, the rush seedling I sandwiched and conveyed by the pair of endless conveyor belts 8 and 9 first comes into contact with the outer periphery (blade portion) of the large-diameter disk cutter 13. Therefore, by increasing the peripheral speed of the large-diameter disk cutter 13, the cutting ability of the grass seedling I that comes into contact with the disk cutter 13 first becomes good. Then, after cutting the tips Ia (stems) and lower roots Ib of the grass seedlings I to some extent with this large-diameter disc cutter rotating at a high speed, the whole is cut at the bite part with the small-diameter disc cutter 12. Since the load does not act on the pair of disc cutters 12 and 13 at the same time, the drive power source of the drive motor 29 does not need to instantaneously generate a large power, and a power source of a small horsepower can be used in time. be able to. Therefore, there is an effect that the device can be downsized and the cost can be reduced.

Even if the lower drive shaft 34 and the upper drive shaft 46 are set to the same number of revolutions, the peripheral speed of the large-diameter disk cutter 13 can be made higher than that of the small-diameter disk cutter 12. .. Therefore, as described above, the power transmission mechanism for differentiating the peripheral speeds of the large and small disc cutters becomes simple. If the pair of endless conveyor belts are arranged vertically so that the rush seedling I is sandwiched between them, and the large-diameter disk cutter 13 is arranged so as to come into contact with the underside of the rush seedling, the sharpness is further improved. Will improve.

Furthermore, as described above, the endless conveyor belts 8 and 9 are arranged between the pair of upper and lower support frames 26, 26, 43 and 43, and the disc cutters 13 and 12 are provided outside the support frames 26 and 43. Since they are arranged, the disc cutters 12 and 13 can be brought close to the side edges of the endless conveyor belts 8 and 9 under the condition that the width dimensions of both the endless conveyor belts 8 and 9 are increased, and the grazing seedling I is sandwiched and conveyed. It does not weaken the force and also prevents chips from clogging between the endless conveyor belt and the disc cutter. The lower part of the grass seedlings is soft but sticky, and the disk cutter for cutting that part is easily worn and frequently replaced. However, the support frame 26, Since a pair of disc cutters 21 and 13 for cutting the root lower part Ia is detachably attached to the outer side of 43, the exchange operation of the disc cutters 12 and 13 becomes extremely easy.

Further, as described above, the power transmission mechanism is arranged outside the pair of disc cutters 12 and 13 for cutting the tip side of the rush seedling I, and its position is the top side on the tip side. Since the power transmission mechanism does not allow the cuttings of the rush seedling I, especially the cuttings of the lower part of the root, to be prevented from being entangled with the power transmission mechanism, and the repair of the power transmission mechanism can be easily performed. Play.

The intermediate idler roller 50 in the upper endless conveyor belt 8 is separated into a small-diameter roller 50b on the root side and a large-diameter roller 50a on the tip side, which are independently rotatably supported by a support shaft 51. ing. The idler roller 50 is arranged so as not to face the idler roller 40 in a side view on the upstream side of the disk cutters 12 and 12 in the conveying direction, and to be close to the lower endless conveying belt 9. On the other hand, the tension winding support roller 52 on the upstream side in the transport direction is disposed at a position apart from the lower endless transport belt 9 and the endless transport belt 8 from the wind support roller 52 to the idler roller 50. The extension direction of the conveying surface is greatly expanded and inclined (angle θ2) toward the conveying upstream side (supply side) with respect to the conveying direction of the lower endless conveying belt 9.

The support shaft 53 that rotatably supports the wrapping support roller 52 is slidably supported by the long holes 54 formed in the upper support frames 43, 43 so as to be pulled in the direction of the inclination angle θ2. On the other hand, the tension of the endless conveyor belt 8 is adjusted through the tension means composed of the bracket 55 attached to both ends of the support shaft 53 and the adjusting screw 56. Thus, the intermediate idler rollers 50 and 40 of the pair of endless conveyor belts 8 and 9 which are driven at the same speed are arranged so as not to face each other upstream of the cutting means in the conveying direction. As described above, the action of preventing the slack of each of the endless transport belts 8 and 9 when the rush seedling I is carried while being sandwiched, and the squeezed grass seedling escapes to the cutting point by the roller cutter blades 12 and 13. There is an effect that neither the action of preventing it nor the damage is impaired.

Further, the extension direction of the transport surface of the upper endless transport belt 8 from the winding support roller 52 on the upstream side of the transport to the idler roller 50 by the endless transport belt 8 is set to the transport direction of the lower endless transport belt 9 described above. On the other hand, the wrapping support roller 52 is separated from the lower endless conveyor belt 9 and the idler roller 50 is arranged so as to be close to the lower endless conveyor belt 9 so as to be largely spread and inclined toward the upstream side of the conveyor. On the upstream side of the transport, which is the supply section of the seedling I, a large gap can be opened so that the transport surface of the upper endless transport belt 8 is inclined at a large angle with respect to the lower endless transport belt 9. Therefore, it becomes easy to supply the plant of the rush seedling to the supply port 10 of the machine unit A, and it is easy to hold it.

Moreover, the position of the intermediate idler roller 50 in the upper endless transport belt 8 is fixedly positioned upstream of the cutting means 14a and 14b in the transport direction, and the position of the idler roller 50 with respect to the winding support roller 52 for tension is fixed. Due to the constitution of the tension means and the tension means for the winding support roller 25 for tension in the lower endless conveyor belt 9, the inclination angle θ2 of the conveying surface on the supply side does not change, so that the number of idler rollers to be installed is increased. Change to the above two actions (action to prevent slackening of the endless conveyor belt when carrying grazing seedlings while sandwiching and carrying, and action to prevent the sandwiched grass seedling I from escaping to the cutting point) It is possible to reduce the manufacturing cost while simplifying the configuration.

The positions of the transport upstream-side wrapping support roller 25 and the transport downstream-side wrapping support roller 24 of the lower endless transport belt 9 correspond to the corresponding transport upstream-side wrapping support roller 52 and transport of the upper endless transport belt 8. By arranging so as to project forward and backward from the position of the downstream-side wrapping support roller 41, it becomes easy to carry in the rush seedling I at the supply port 10, while a pair of endless conveyor belts is provided at 11 discharge ports. The seedlings I to be sandwiched between 8 and 9 can be discharged smoothly without the dissipative phenomenon caused by the spiting out all at once.

In order to prevent the lower endless conveyor belt 9 and the upper endless conveyor belt 8 from meandering running, as shown in FIGS. 5 and 6, the winding support rollers 24, 25, 41, 52 and the idler rollers 40, 50 are provided. Is provided with a convex ring-shaped ring portion 60 on the outer peripheral surface of the cylinder by welding or the like. This has the same effect as adding a crown (the diameter of the middle portion of the cylinder in the longitudinal direction is larger than the diameter of both longitudinal end portions of the cylinder) to the circumferential surface of each of the winding supporting rollers, and the wound endless It is possible to prevent uneven movement such as contact of the conveyor belt with one of the support frames and meandering running, and avoid damage to the endless conveyor belt. In particular, when the upper endless conveyor belt 8 of the above embodiment is divided into 8a and 8b, it is possible to eliminate the inconvenience that adjacent belt portions run on the other side.

As can be understood from FIGS. 5, 6, 9, and 10, the disc cutters 12 and 13 of the cutting means 14 a and 14 b have drive shafts 46 outside the upper frame 43 and the lower frame 26, respectively. , 32 are detachably attached to both ends. In that case, in order to facilitate the replacement work of the disc cutters, it is necessary to fix the disc cutters 12 and 13 to the drive shafts 46 and 32 so that they cannot rotate. Therefore, both ends 61, 61 of the round shaft-shaped drive shafts 46, 32 are formed in a rectangular (square) cross section, and a sleeve 63 having a square inner diameter hole 62 is fitted on the end 61. The outer circumference of the sleeve 63 has a hexagonal cross section, and a collar portion 64 is provided in the middle of the outer circumference in the longitudinal direction. The inner diameter holes of the disc cutters 12 and 13 are hexagonal holes so as to be fitted on the outer peripheral surface of the star portion 64, and the side surfaces of the disc cutters 12 and 13 are brought into contact with the disc surface of the collar portion 64, so that the end portion 61 The disc cutter is pressed by the bolt 66 and the collar 67 which are attached to the screw hole 65 formed in the end face. When the chain sprockets 49, 34 are detachably mounted on the outer sides of the disk cutters 12, 13, a square hole is fitted into the square end portion 61 protruding from the inner diameter hole 62 of the sleeve 63. Formed on the chain sprocket 49, 34, the other side surface of the disk cutter 12, 13 is pressed by the boss portion of the chain sprocket, and the outer surface side of the chain sprocket is clamped and fixed by the bolt 66 and the collar 67 (Fig. 9 and FIG. 10). According to the configuration described above, the drive shafts 46 and 32 are round shafts, while the sleeve 63 having a non-circular outer circumference is interposed to increase the non-circular inner diameter holes of the disk cutters 12 and 13. It is possible to improve the transmission of the rotational force (to reduce the surface pressure with the shaft at the inner diameter hole) and to prevent the disc cutter from swinging.

[Brief description of drawings]

FIG. 1 is a left side view of a trimming device for 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 the main part of the main unit.

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

FIG. 6 is a partially cutaway plan view of an upper endless conveyor belt.

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

FIG. 8 is an explanatory diagram showing a state of transporting rush seedlings by the upper and lower endless transport belts.

FIG. 9 is an enlarged sectional view of an essential part showing a disc cutter attachment part.

FIG. 10 is a perspective view of the same.

[Explanation of Codes] A Main Machine Section B Truck Section I Ikusa Seedling 1 Cutting and aligning device 2a, 2b Frame 3 Pillar 8 Upper endless conveyor belt 9 Lower endless conveyor belt 10 Supply port 11 Discharge port 12 Upper disc cutter 13 Lower disc cutter 14a, 14b Cutting means 15 Supply guide slide 16, 19 Cover body 18 Cover plate 24, 25, 41, 52 Winding 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

Claims (1)

[Scope of utility model registration request] 1. A pair of endless conveyor belts sandwiches the stem portion of a rush seedling and conveys it in a direction intersecting with the stem axis. In an aligning device for rush grass seedlings configured to cut,
Each of the endless conveyor belts is arranged between a pair of support frames, and each of the cuttings is composed of a pair of disk cutters that rotate in opposition to each other on the outer side opposite to the position of the endless conveyor belt with each support frame interposed therebetween. A cutting and aligning device for locust seedlings, characterized in that the cutting means and the power transmission mechanism to the endless conveyor belt are provided outside the support frame with the disc cutter interposed therebetween.