JP4389120B2 - Seedling machine wheels - Google Patents

Description

  The present invention relates to a wheel of a seedling planting machine or the like that reduces the deposition of mud around the traveling wheel in a wheel of a seedling planting machine or a paddy field management work machine.

2. Description of the Related Art A technique for providing a plate-like foil cover so as to cover both the inside and outside of a spoke portion of a wheel is known (for example, see Patent Document 1).
JP-A-10-155319 (first page, FIG. 1).

  The front wheel of the seedling planter is provided with a foil cover in order to reduce the scratching of the soil caused by steering or the like, and to keep the straightness good and stable. However, the mud around the wheel cover adheres and accumulates around the axle boss at the center of rotation, forming a large mud mass, and finally falls on the adjacent planted seedlings, The planted seedlings are likely to be damaged.

According to the first aspect of the present invention, a plate-like foil cover (3) is provided outside the wheel rim (1) and along the outside of the spoke (2) , and the foil cover (3) has a center. A conical portion (67) having a conical bulging portion formed outward is formed, and a mud hole ( inside and outside ) is formed at a position facing the conical portion (67) and the spacing portion between the spokes (2). It is set as the structure of wheels, such as a seedling transplanter characterized by having formed 4) . During vehicle traveling, mud adhering by rotation of the wheel to the side of the wheel cover (3) is, with the rotation rise to this soil surface upper position, toward the wheel cover (3) face to the rotation center portion falling Is done. Then come to the position of the mud loophole (4) of the central portion, mud is or fall by the mud loophole (4), the mud loophole (4) section boss or the spoke (2) unit or the like of It is dropped by being hit by rotation or coming out to the opposite side through this mud hole (4) . For this reason, it is less likely that mud stays and accumulates and clumps while adhering to the center of the foil cover (3) .

In the invention according to claim 2, the mud hole (4) is formed between the plate edge (7) of the reinforcing plate (6) for reinforcing the spoke (2) mounting portion around the axle boss (5). A wheel of a seedling transplanter or the like according to claim 1 . As described above, when the mud adhered to the outer surface of the wheel cover (3) by the rotation of the wheel reaches the mud hole (4) at the center of rotation, the mud does not easily become a lump and easily falls. In particular, the mud located in the mud hole (4) is not crushed and lumped by contact with the foil cover (3) and the plate edge (7) of the reinforcing plate (6) rotating integrally with the foil cover (3). It becomes easy to fall.

In the invention according to claim 1, the mud hole 4 of the wheel cover 3 makes it easy for muddy water flowing inside the conical portion 67 on the inner surface of the foil cover 3 to flow out from the mud hole 4 to the outer surface part. The mud that is about to flow and accumulate along the outer surface of the foil cover 3 is washed away by the muddy water, so that the adhesion and accumulation of mud on the surface of the wheel cover 3 can be reduced, and the wheel rim 1 rotates. It is possible to prevent mud accumulation and lump formation on the center. That is, the mud moving to the rotation center along the surface of the wheel cover 3 is likely to fall through the mud hole 4 inward or outward, and the mud can hardly be accumulated.

In addition to the effect of the invention described in claim 1 , the invention described in claim 2 is configured so that the mud flowing down to the mud hole 4 of the foil cover 3 is the reinforcing plate 6 in the mud hole 4 and the plate edge 7. It becomes easy to fall to the outer side of the mud hole 4 immediately after being crushed or scraped off by rotating contact such as.

  1 to 3, the seedling body 11 is provided with a front wheel 13 that can be steered by a handle 14 at both left and right ends of a front axle housing, and a rear wheel 16 is mounted at both left and right ends of a rear axle housing 15 for driving. The configuration is such that the vehicle is driven to rotate by an engine mounted under the seat floor 17 below the seat 12. On the upper side of the vehicle body 11, a center floor 19 is provided between the front dashboard 18 and the rear seat floor 17. Sides on both the left and right sides extending from the center floor 19 to the front and rear dashboards 18 and the seat floor 17 are provided. A step floor 20 is provided. The front end of the side step floor 20 is opened to the front side on the outer side of the dashboard 18 so that the driver can easily get on and off from the side of the side step floor 20 as well as from the front end side.

  A seedling planting device 22 is connected to the rear end of the vehicle body 11 via a lift link 21 in the form of a parallel link, and is lifted and lowered by expansion and contraction of a lift cylinder provided between the vehicle body 11. This seedling planting device 22 has a center float 23 in the lower part and side floats 24 on the left and right side parts, and a seedling planting mechanism 25 for planting seedlings on the soil surface leveled by the floats 23 and 24 in the rear part. In the upper part, a seedling tank 26 inclined upward and forward is provided so as to be movable left and right, and matted seedlings supplied to the seedling tank 26 are fed to the operation area of each seedling planting mechanism 25 while being fed to the rear lower part. However, it is configured to perform multi-row planting such as 6-row planting form. Further, an auxiliary seedling mounting frame 29 having a plurality of seedling receiving shelves 28 is mounted by a support bracket on the front part of the vehicle body 11 and outside the front part of the side step floor 20. A fertilizer including a fertilizer tank 30, a fertilizer feeding device 31, a fertilizer hose, and the like is mounted on the rear portion of the vehicle body 11, and the fertilizer flows down to the groover 32 provided in the flat portion of each float 23, 24 Then, fertilization can be performed at the planting strip position by each planting mechanism 25 of the seedling planting device 22.

  As shown in FIG. 7, the rear wheel 16 is linked so that the left and right rear wheel shafts 37 mounted on the rear axle housing 15 are transmitted and rotated from the front transmission case 35 through the rear wheel drive shaft 36. ing. The rear wheel drive shaft 36 has a universal joint 37 and spline shaft joints 38 and 39 at the front and rear end portions. In order to prevent mud from entering the spline shaft joints 38 and 39, these spline shafts 38 and 39 are provided. The spline shaft portion 38 is formed in a spline-free portion 40 in which the base end portion of the inner spline shaft 39 has a simple round shape and the fitting end portion of the spline shaft 38 is formed in a simple round shape. It is set as the fitting form which overlapped by positioning the front-end | tip part. Reference numeral 41 denotes a bearing of the spline shaft joint 39, and a bevel gear 42 at the tip of the spline shaft joint 39. The rear wheel shaft 43 meshes with an interlocking gear 44 to transmit the left and right rear wheels 16. . The outer spline shaft coupling 38 is formed with a spline over the tip, but can also be formed in a rounded shape, similar to the splineless portion 40 of the spline shaft coupling 39.

  Further, as shown in FIGS. 8, 9, and 10, the center marker 47 serving as a driving index of the driver or the driver's weight is placed on the front end portion of the vehicle body 11 such as over the heel to bring the vehicle body center of gravity forward. A pedal step 48 and the like for shifting are provided. The center marker 47 is lit with a lamp, is provided at the tip of a long marker pole 49, and is lit on the inside via a wire of wiring. Since the marker pole 49 protrudes high, it often becomes a hindrance. For this reason, the marker pole 49 can be lowered by being tilted in the front-rear direction and the left-right direction. The base 50 of the marker pole 49 is formed in an L shape and can be fitted and supported by the socket 51 at the front end of the vehicle body 11. The socket 51 is formed in the front-rear direction, and is provided on the lower side of the vehicle body 11 so as to be rotatable around a horizontal axis 52 in the horizontal direction. The base portion 50 of the marker pole 49 is fitted to the socket 51, and the spring 53 fitted to the tip portion of the base portion 50 is repelled rearward, and the pin 54 that is located on the front side of the base portion 50 and protrudes is inserted into the socket 51. The marker pole 49 is configured to be engaged with a notch 55 formed on the front end edge of the front end edge so as to be locked. The notches 55 are formed at appropriate angular intervals so that the tilt angle of the marker pole 49 can be selected appropriately. The marker pole 49 can be pivoted back and forth by fixing the post-war tilt angle by tightening the bolt on the horizontal shaft 52. A notch 57 is formed in the guide edge 56 integrated on the side, and the structure can be locked at an inclination angle in the front-rear direction.

  Further, when the pedal step 48 is supported around the step shaft 58 so as to be pivotable up and down and is always resiliently pivoted upward by the return spring, it can be brought into the storage state C. Then, the driver can step on the foot B and get on as a step. At this time, the locking piece 59 protruding to the rear side of the pedal step 48 comes into contact with the swing position of the pitman arm 60 steered and linked by the steering handle 14 to fix the steering swing of the pitman arm 60. can do. In this fixed position, the front wheel 13 is set so as to be maintained in a straight traveling state. A tie rod 61 connects the pitman arm 60 and the steering arm on the front wheel 13 side. When the driver goes up on the pedal step 48 and deviates the center of gravity of the vehicle body 11 to the front side, the pitman arm 60 cannot rotate, so the front wheels 13 are maintained in a straight traveling state.

  A wheel cover 3 is provided on the steerable front wheel 13 so as to reduce lifting of mud when the front wheel 13 rotates. The front wheel 13 is provided with spokes 2 in a radial direction around an axle boss 5 at the center of rotation, and a wheel rim 1 is provided on the outer periphery thereof. A rubber tire 65 having a lug is fitted to the wheel rim 1. A reinforcing plate 6 is provided around the axle boss 5 so as to be sandwiched between the inner side and the outer side between the attachment portions of the spokes 2, and the plate edge 7 formed between the spokes 2 of the reinforcing plate 6 The outer peripheral portions of the outer reinforcing plates 6 are welded to be integrated with the spoke 2 portion and the like, and between the circular hole shape or the central hole shape of the triangular shape of the wheel cover 3 fixed to the outer surface of the spoke 2 The mud hole 4 is formed in the surface. Such a front wheel 13 is rotated by transmitting the axle boss 5 to the axle 66. Here, during traveling of the vehicle body, the mud adhering to the side surface of the wheel cover 3 due to the rotation of the wheels flows down toward the rotation center portion of the wheel cover 3 as the rotation of the soil cover rises upward. The And when it comes to the position of the mud hole 4 in the center, the mud falls at the mud hole 4, or the boss part of the mud hole 4 part or the rotation of the spoke 2 part, etc. It falls, for example, through the mud hole 4 to the inner surface on the opposite side. For this reason, mud is less likely to stagnate, accumulate or clump while adhering to the center of the foil cover 3. The mud that adheres to the outer surface of the wheel cover 3 due to the rotation of the front wheel 13 reaches the mud hole 4 at the center of the rotation and does not easily become a lump and easily falls. The mud located in the hole 4 is crushed by the contact with the foil cover 3 and the plate edge 7 of the reinforcing plate 6 that rotates together with the foil cover 3, and is easily dropped without lumping.

  Such a foil or bar 3 is made of a polyester film resin such as ABS (acrylic / nitrile / butaryene / styrene) resin material or a resin blended with fluorine as a base material to improve the mud adhesion prevention effect. By adopting a structure in which the one formed in the shape is integrally molded, mud deposits can be prevented.

Next, mainly based on FIG. 4, a conical portion 67 is formed in which the central portion of the foil cover 3 is bulged outwardly in a conical shape, and the conical portion 67 is opposed to the interval portion between the spokes 2. A hole 4 is formed. In such a form, the muddy water that flows inside the conical portion 67 on the inner side surface of the foil cover 3 easily flows out from the mud hole 4 to the outer side surface portion, and is centered along the outer side surface of the foil cover 3. mud to be deposited flows into parts are washed away by the mud, it is possible to reduce the adhesion deposition of mud on the surface of the wheel cover 3.

  Next, mainly based on FIG. 5, the center hole of the foil cover 3 is formed in a substantially triangular shape, and the triangular center hole and the plate edge 7 of the reinforcing plate 6 located on the inner side of the triangular hole are formed. A slit-like mud hole 4 is formed between them. In addition, guide edges 68 and 69 are formed at the hole edges of the mud holes 4 so as to be inclined toward the inner central portion. By such guide edges 68 and 69, the muddy water flowing to the center along the inner side surface of the foil cover 3 smoothly flows out from the mud hole 4 to the outside, and mud mud to the outer center is removed. Adhesion deposition can be prevented. The foil cover 3 is sandwiched between the inner side of each spoke 2 part and the holding piece 70 of polymerization, and is fixed by tightening bolts 71 or the like.

  Next, mainly referring to FIG. 6, the mounting of the front wheel 13 and the wheel cover 3 is shared by the same bolt 72. A reinforcing plate 6 or a disk replacing the axle boss 5 is formed at the center of the spoke 2, and this reinforcing plate 6 is superposed on the outer side of the mounting disk 74 of the axle 66 and can be attached by tightening bolts 72. At this time, a spacer ring 75 having an appropriate thickness is interposed on the outer surface of the disk or the reinforcing plate 6 to overlap the foil cover 3, and the bolt 72 is inserted and tightened to be fixed. The detachable configuration can be made simple and easy.

The side view of the whole seedling transplanter. The side view and front sectional view of the front wheel part. The top view of the seedling transplanter. The side view and front sectional drawing of the front-wheel part which show the part another example. The side view and front sectional drawing of the front-wheel part which show the part another example. The front sectional view of the front wheel part which shows the part another example. The plain sectional view of the rear wheel drive shaft. The front view and its side view of the center marker part. Part of the exploded slope view. The side view which shows the operating state of the pedal step part, and the top view of the part.

1 Wheel Rim 2 Spoke 3 Wheel Cover 4 Mud Hole 5 Axle Boss 6 Reinforcement Plate 7 Edge
67 Cone

Claims (2)

A plate-like foil cover (3) is provided outside the wheel rim (1) and along the outside of the spoke (2) , and the center of the foil cover (3) bulges outward in a conical shape. The conical portion (67) is formed, and an open mud hole (4) is formed on the inner and outer sides of the conical portion (67) at a position facing the space between the spokes (2). Wheels for seedling planters. The mud hole (4) is formed between a plate edge (7) of a reinforcing plate (6) that reinforces a spoke (2) mounting portion around an axle boss (5). Wheels of listed seedling transplanters.

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