Upper surface molding blade, upper surface molding body, and ridge coating machine

Abstract

To provide an upper surface molding blade capable of firmly and beautifully molding a joint between a molding part newly molded by an upper surface molding body (upper surface molding blade) and an upper surface of an original levee in upper surface molding, and a joint in the vicinity of a previously molded part and a later molded part (in the case of molding both sides of a levee) in the case of molding both sides of the levee, and to provide an upper surface molding body having the upper surface molding blade, and a levee plastering machine having the upper surface molding body.SOLUTION: In the upper surface molding blade 41b1 which can be elastically deformed and is used for the upper surface molding body of the levee plastering machine, a region corresponding to the outer end side of the upper surface molding body of the upper surface molding blade 41b1 is formed into a shape capable of molding the upper surface of the levee harder than other regions.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to an upper surface forming blade of a ridge coating machine, an upper surface forming body, and a ridge coating machine. [Background technology]

[0002] Conventionally, a paddy field ridge coating machine that coats the inner surface (slope) and top surface of paddy field ridges has been known (see Patent Documents 1 and 2). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2010-45995 [Patent Document 2] Japanese Patent Application Laid-Open No. 2013-176320 Summary of the Invention [Problem to be solved by the invention]

[0004] The top surface of the ridge needs to be firmly coated and compacted because workers stand on it to work and walk. It is also necessary to prevent the finished top surface of the ridge from becoming uneven, scratched, or even destroyed after shaping. Therefore, in order to enable the ridge to be firmly coated and compacted even under dry soil conditions, the ridge coating machines shown in Patent Documents 1 and 2 use a ridge forming body that has multiple elastically deformable ridge top surface forming sections and pressing sections (top surface forming blades) that form the ridge top surface. During operation, the multiple upper surface shaping blades are components that rotate while being pressed firmly against the upper surface of the ridge, forming the upper surface of the ridge. As shown in Figure 9, the upper surface of the ridge is shaped by the upper surface shaping body (upper surface shaping blade), but the area F3 near the joint between the shaped portion F1 formed by the upper surface shaping body (upper surface shaping blade) and the upper surface F2 of the original ridge cannot be formed firmly. If the area F3 near the joint is not formed firmly and remains soft, it can be difficult to walk on the ridge or to drive work machines or vehicles over it. Therefore, after forming the ridges, workers sometimes had to tamp down the joints on the top surface of the ridges with their own feet.

[0005] Therefore, the present invention aims to provide an upper surface forming blade that can firmly and neatly form the joint between the newly formed portion formed by the upper surface forming body (upper surface forming blade) and the upper surface of the original ridge in upper surface forming, or the joint between the earlier formed portion and the later formed portion (in the case of forming both sides of the ridge) in upper surface forming when forming both sides of the ridge, using only the work of a ridge coating machine, an upper surface forming body having said upper surface forming blade, and a ridge coating machine having said upper surface forming body. [Means for solving the problem]

[0006] In order to solve such problems, the present invention has the following configuration. An elastically deformable upper surface forming blade used in an upper surface forming body of a furrow coating machine, An upper surface shaping blade, an upper surface shaping body having said upper surface shaping blade, and a ridge coating machine having said upper surface shaping body, characterized in that the area of ​​the upper surface shaping blade corresponding to the outer end side of the upper surface shaping body is shaped so that the upper surface of the ridge can be molded more firmly than other areas. [Effects of the Invention]

[0007] The upper surface shaping blade of the present invention can provide an upper surface shaping blade that can firmly and neatly shape the area around the joint between the shaped part and the upper surface of the original ridge, and the area around the joint between the earlier shaped part and the later shaped part, simply by working with a ridge coating machine, an upper surface shaped body having the upper surface shaping blade, and a ridge coating machine having the upper surface shaped body. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a diagram showing a ridge coating machine A and a traveling vehicle body B according to an embodiment of the present invention. [Figure 2] FIG. 1 is a diagram showing a ridge coating machine A according to an embodiment of the present invention. [Figure 3] FIG. 2 is a diagram showing a ridge forming portion 41 according to an embodiment of the present invention. [Figure 4] FIG. 2 is a view showing an upper surface molding part 41b according to the embodiment of the present invention. [Figure 5] FIG. 2 is a diagram showing a ridge forming portion 41 according to an embodiment of the present invention. [Figure 6] 10A and 10B are diagrams showing an upper surface molding blade 41b1 according to an embodiment of the present invention. [Figure 7] 10A and 10B are diagrams showing an upper surface molding blade 41b1 according to an embodiment of the present invention. [Figure 8] FIG. 2 is a diagram showing a ridge forming portion 41 according to an embodiment of the present invention. [Figure 9] FIG. 10 is a diagram showing a conventional ridge-formed body. DETAILED DESCRIPTION OF THE INVENTION

[0009] [Embodiment] Hereinafter, a ridge coating machine A according to an embodiment of the present invention will be described with reference to the drawings. In the following description, the same reference numerals in different drawings indicate parts with the same functions, and duplicated descriptions in each drawing will be omitted as appropriate. For ease of explanation, terms indicating directions such as up, down, forward, backward, right, and left are used, but the direction in which gravity acts is downward, and the opposite is upward. Furthermore, the direction in which traveling vehicle body B moves is forward, and the opposite is backward. Furthermore, facing forward, the right side is the right, and the left side is the left.

[0010] [Overall configuration] FIG. 1 is a diagram showing a ridge coating machine A and a traveling vehicle body B in an operating state according to an embodiment of the present invention, as viewed from above. FIG. 2 shows the ridge coating machine A of FIG. 1, where (a) is a view from above and (b) is a view from the right. The ridge coating machine A is connected to a running vehicle B such as a tractor, and performs ridge coating work while moving forward as the running vehicle B moves.It is equipped with an attachment unit 1, an offset mechanism unit 2, a power transmission unit 3, and a working unit 4. The traveling body B has a pair of left and right front tires B1, a pair of left and right rear tires B2, and a three-point linkage B3 that connects the agricultural implement to the rear of the traveling body B. By operating the offset mechanism 2, the working unit 4 can be offset from a storage position, which is a position behind the traveling body B, to a position (offset position) offset to the right and outward as shown in Figures 1 and 2, and further to a position (maximum offset position) which is offset most to the right and outward beyond Figures 1 and 2.

[0011] The furrow coating machine A of this embodiment is structurally capable of driving the working unit 4 regardless of the position of the working unit 4 between the storage position and the maximum offset position, but furrow coating work cannot be performed unless the furrow forming unit 41 (described later) of the working unit 4 is positioned to the right and outward of the outermost right side of the running body B (the outer surfaces of the right front tire B1 and rear tire B2).Therefore, in reality, furrow coating work will not be performed unless the furrow forming unit 41 is positioned to the right and outward of the outermost right side of the running body B.

[0012] [Installation part] The mounting part 1 is connected to a three-point linkage B3 provided at the rear of the traveling vehicle body B. The three-point linkage B3 is usually composed of a top link, a lift rod, a lower link, etc. The three-point linkage B3 is a well-known mechanism, so a detailed description thereof will be omitted. Note that only the lower link B31 is shown in FIG. 1.

[0013] In this embodiment, the mounting portion 1 is mounted to a three-point link mechanism B3 via an auto hitch C (also called a quick hitch or a one-touch hitch). The mounting portion 1 has a hitch frame 11 connected to the auto hitch C, and a furrow coating machine power input shaft 12 to which power is transmitted from a PTO shaft (not shown) of a tractor. On the hitch frame 11, an offset mechanism unit 2 for offsetting the working unit 4 and a power transmission unit 3 for transmitting power from the furrow coating machine power input shaft 12 to the working unit 4 are attached facing rearward. The mounting unit 1 may be connected to the three-point link mechanism B3 of the traveling vehicle body B without using the auto hitch C.

[0014] [Offset mechanism] The offset mechanism 2 is a mechanism for offsetting the working unit 4 between a storage position and a maximum offset position. Specifically, the offset mechanism 2 can offset the working unit 4 between a storage position at the rear of the traveling body B and an offset position to the side (outside right in this embodiment) with respect to the traveling direction of the traveling body B as shown in FIG. 1. The offset mechanism 2 has an offset frame 21, a link rod 22, a support frame 23, and an expandable member (not shown). In this embodiment, the support frame 23 supports the working unit 4 and is configured to offset the working unit 4 to the right.

[0015] One end (front side) of the offset frame 21 and the link rod 22 is rotatably connected to the hitch frame 11, and the other end (rear side) of the offset frame 21 and the link rod 22 is rotatably connected to the support frame 23. With the above configuration, the hitch frame 11, offset frame 21, link rod 22, and support frame 23 form a parallelogram link mechanism (parallel link mechanism) with each rotation center as its vertex. With this link mechanism, the offset mechanism unit 2 can offset and move the working unit 4 while maintaining the angle of the working unit 4 relative to the traveling direction of the traveling body B. The offset mechanism 2 is a known mechanism, and therefore a detailed description thereof will be omitted.

[0016] [Power transmission section] The front end of the power transmission unit 3 is connected to the hitch frame 11 of the mounting unit 1 so as to be rotatable about a vertical axis α, and the rear end is connected to the working unit frame 45 of the working unit 4 (details of which will be described later) so as to be rotatable about a vertical axis β (see Figure 1). The rotation shafts at the front and rear ends of the power transmission unit 3 are coaxial with the rotation shafts at the front and rear ends of the offset frame 21, which is one of the frames that make up the offset mechanism unit 2. In addition, power transmission shafts are arranged concentrically with the rotation shafts at the front and rear ends of the power transmission unit 3. An input sprocket, to which power is transmitted from the furrow coating machine power input shaft 12, is attached to the upper end of the rotation shaft at the front end of the power transmission unit 3, and an output sprocket, which transmits power to the working unit input shaft (described below), is attached to the upper end of the rotation shaft at the rear end of the power transmission unit 3, and a roller chain is wound between the input sprocket and the output sprocket, constituting a known chain drive mechanism. As described above, the power transmission unit 3 employing a chain drive mechanism is a known mechanism, and therefore a detailed description thereof will be omitted. The power transmission unit 3 may be other power transmission means such as a power transmission shaft and universal joints attached to both ends of the shaft.

[0017] [Working section] The working unit 4 is the part where ridge painting work is performed, and as shown in Figure 2, it has a ridge forming unit 41 (ridge forming body), a pre-treatment unit 42, a top treatment unit 43, and a ground wheel 44 (also called a coulter), each of which is supported by a working unit frame 45. The rear end of the working unit frame 45 is rotatably connected to the rear rotation axis of the offset frame 21 of the offset mechanism unit 2. In other words, the working unit frame 45 is rotatable around axis β relative to the offset mechanism unit 2. The working unit frame 45 also includes a working unit input shaft (not shown) that inputs power from the rear power transmission shaft of the power transmission unit 3, and power transmission means (not shown) that transmits power from the working unit input shaft to the ridge forming unit 41, pre-processing unit 42, and top field processing unit 43. In other words, the working unit frame 45 supports the ridge forming unit 41, pre-processing unit 42, and top field processing unit 43, and also includes power transmission means that transmits power to the ridge forming unit 41, pre-processing unit 42, and top field processing unit 43. The ridge forming section 41 includes a slope forming section 41a (slope forming body) that forms the slope E1 of the ridge E, and an upper surface forming section 41b (upper surface forming body) that forms the upper surface E2 of the ridge E. The slope forming section 41a is a substantially truncated cone-shaped member whose center extends horizontally perpendicular to the left and right direction of the traveling direction of the work machine body, and the upper surface forming section 41b is a member that is substantially coaxial with the slope forming section 41a and has a generally cylindrical shape (as will be described in detail later, an upper surface forming blade 41b1 is attached to the outer peripheral surface of an upper surface forming blade support section 41b2 of a polygonal cylinder), and is provided on the right outside of the slope forming section 41a. The ridge forming section 41 is supported by a central shaft disposed at the center thereof, receives power from the power transmission section 3 and rotates clockwise around this central shaft when viewed from the right.

[0018] Furthermore, a ridge position detection sensor 47 for detecting the position of the ridge is attached to the working unit frame 45 via a ridge position detection sensor attachment arm 46 so as to be positioned behind the upper surface molding unit 41b. The pre-treatment unit 42 has a tillage shaft with tines 42a attached, and the tillage shaft rotates by receiving power from the power transmission unit 3. The pre-treatment unit 42 uses the rotating tines 42a to break up the soil on the slope E1 of the ridge E before ridge filling. The broken up soil is applied by the rear slope forming unit 41a to form a new slope E1. The top field processing unit 43 has a tillage shaft with tillage tines 43a attached, and the tillage shaft rotates by receiving power from the power transmission unit 3. The top field processing unit 43 uses the rotating tillage tines 43a to break up the soil on the top surface E2 of the ridge E before ridge filling. The broken up soil is applied by the rear top surface forming unit 41b to form a new top surface E2. The ridge forming section 41, the pre-processing section 42, and the top processing section 43 are well-known mechanisms, and therefore detailed explanations thereof will be omitted.

[0019] The working unit 4 is offset by the offset mechanism unit 2, which is a parallel link mechanism, so that the rotation axes of the slope forming unit 41a and the upper surface forming unit 41b of the ridge forming unit 41 can be offset from the storage position at the rear of the running body B to an offset position on the right outside while maintaining a state in which they are perpendicular to the left and right of the traveling direction of the running body B. In addition, the working unit 4 is rotatable around the axis β relative to the offset mechanism unit 2. With this configuration, the rotation axes of the slope forming unit 41a and the upper surface forming unit 41b of the ridge forming unit 41 can be rotated in the front-rear direction from a state perpendicular to the left and right direction relative to the traveling direction of the traveling vehicle body B. It should be noted that the working unit 4 does not necessarily have to be configured to be rotatable around the axis β relative to the offset mechanism unit 2.

[0020] [Ridge forming part] Fig. 3 is a diagram showing the ridge forming section 41 according to an embodiment of the present invention, and Fig. 4 is a diagram showing the upper surface forming section 41b according to an embodiment of the present invention. Note that Figs. 3 and 4 are cross-sectional views with a portion (near the uppermost upper surface forming blade fixing member 41b3 in the figures) cut away. The two-dot chain line in Fig. 4 indicates the upper surface forming blade 41b1 in a non-operating state. FIG. 5 is a diagram showing a ridge forming unit 41 according to an embodiment of the present invention, where (a) is a diagram showing a non-operating state and (b) is a diagram showing a working state. The ridge forming unit 41 has a slope forming unit 41a rotatably supported by the working unit frame 45, and an upper surface forming unit 41b whose base end is attached to the top of the slope forming unit 41a and whose outer end extends in the ridge width direction. The slope forming unit 41a and upper surface forming unit 41b are attached to a rotating shaft (not shown) rotatably supported by the working unit frame 45. The ridge forming unit 41 rotates when power is transmitted to the rotary shaft via a power transmission means in the working unit frame 45 .

[0021] [Slope forming section] The slope shaping unit 41a has a slope shaping blade support portion (not shown) and eight slope shaping blades 41a1 in a generally fan shape. The slope shaping blade support portion is attached to a rotary shaft. The slope shaping blades 41a1 are attached to the outer peripheral surface of the slope shaping blade support portion and lined up in the circumferential direction. Of the adjacent slope shaping blades 41a1, the slope shaping blade 41a1 on the downstream side in the rotation direction is arranged so that the upstream end of the slope shaping blade 41a1 on the downstream side in the rotation direction overlaps the upper surface of the downstream end of the slope shaping blade 41a1 on the upstream side in the rotation direction, and the eight slope shaping blades 41a1 form a generally conical surface. The slope shaping blades 41a1 may be detachably attached to the slope shaping blade support portion. The number of slope shaping blades 41a1 that form the slope shaping portion 41a may be any number other than eight.

[0022] [Top molding part] As shown in FIG. 4, the upper surface molding section 41b has eight elastically deformable, substantially rectangular upper surface molding blades 41b1 molded from an elastic material such as resin, and an octagonal cylindrical upper surface molding blade support section 41b2. In this embodiment, the upper surface molding blades 41b1 and the slope surface molding blades 41a1 are configured in equal numbers. The upper surface molding blade support section 41b2 is attached to the rotation shaft, and its base end is detachably attached to the top of the slope surface molding section 41a. When attached to the upper surface molding blade support section 41b2, the upper surface molding blade 41b1 has a molding region 41b11, whose upstream side in the rotation direction is pressed against the slightly curved ridge upper surface to mold the ridge upper surface. When attached to the upper surface molding blade support section 41b2, the upper surface molding blade 41b1 has a flat mounting region 41b12 that is continuous with the molding region 41b11 downstream in the rotation direction and is attached to the upper surface molding blade support section 41b2. One long side (mounting region 41b12) of the upper surface shaping vanes 41b1 is detachably attached to the outer peripheral surface of the upper surface shaping vane support portion 41b2 in a circumferentially aligned manner, and the upstream end of the upper surface shaping vane 41b1 located downstream in the rotational direction of adjacent upper surface shaping vanes 41b1 is arranged so as to overlap the upper surface of the downstream end of the upper surface shaping vane 41b1 located upstream in the rotational direction, so that the upper surface shaping portion 41b has a generally cylindrical shape formed by eight upper surface shaping vanes 41b1 (see FIG. 3). Note that the number of upper surface shaping vanes 41b1 forming the upper surface shaping portion 41b can be any number other than eight, and if the number of upper surface shaping vanes 41b1 is any number other than eight, the number of outer peripheral surfaces of the upper surface shaping vane support portion 41b2 must be changed depending on the number of upper surface shaping vanes 41b1. Furthermore, the upper surface shaping blade support portion 41b2 may be cylindrical instead of polygonal tubular. Furthermore, the number of slope shaping blades 41a1 and the number of upper surface shaping blades 41b1 do not have to be the same. Furthermore, the shaping region 41b11 does not have to be curved on an arc.

[0023] Hereinafter, the side of the upper surface molding blade 41b1 corresponding to the base end side of the upper surface molding portion 41b will be simply referred to as the base end side, and the side corresponding to the opposite side of the base end side of the upper surface molding portion 41b will be simply referred to as the outer end side (see Figure 5(a)). The mounting area 41b12 is formed with three pin engagement holes 41b13 aligned in the longitudinal direction of the mounting area 41b12, into which pins 41b32 provided on the upper surface molding blade fixing member 41b3 (described later) can be fitted (see Figures 6 and 7). A lateral outer plate 41b21 is attached to the outer end side corresponding to the opposite side of the base end side of the upper surface molding blade support portion 41b2, and an upper surface molding blade fixing member 41b3 for attaching the upper surface molding blade 41b1 to the upper surface molding blade support portion 41b2 is removably attached to the lateral outer plate 41b21. 4, pin engagement holes 41b22 are formed on the circumferential surface of each of the upper surface shaping blade support portions 41b2, which are substantially octagonal cylindrical, and into which pins 41b32 (described later) provided on the upper surface shaping blade fixing member 41b3 can engage. Although not shown, the pin engagement holes 41b22 are elongated holes parallel to the axis, have a width that prevents the head of the pin 41b32 from passing through, and one end (outer end) is a generally circular potbelly hole with a diameter that allows the head of the pin 41b32 to be inserted through, and are formed in three locations on each circumferential surface, aligned in the same direction as the axis.

[0024] The upper surface shaping blade fixing member 41b3 is a long plate-like member having a bent attachment piece 41b31 at one end, and the attachment piece 41b31 is fixed to the lateral outer plate 41b21 of the upper surface shaping blade support portion 41b2 with a bolt. The upper surface shaping blade fixing member 41b3 is also provided with three pins 41b32 that can fit into pin engagement holes 41b13 formed in the upper surface shaping blade 41b1 and can engage with pin engagement holes 41b22 formed in the upper surface shaping blade support portion 41b2. Although not shown, the pins 41b32 are provided at three locations aligned in the longitudinal direction of the upper surface shaping blade fixing member 41b3 so as to correspond to the three pin engagement holes 41b13 formed in the upper surface shaping blade 41b1 and the three pin engagement holes 41b22 formed in the upper surface shaping blade support portion 41b2, and protrude so as to be able to fit (be inserted into) the corresponding pin engagement holes 41b13 and pin engagement holes 41b22. In other words, the three pins 41b32 provided on the upper surface shaping blade fixing member 41b3 are arranged so as to be aligned in the same direction as the axis when the upper surface shaping blade fixing member 41b3 is fixed to the lateral outer plate 41b21.

[0025] The method for attaching the upper surface shaping blade 41b1 to the upper surface shaping blade support part 41b2 will be described below. The upper surface shaping blade 41b1 is attached to the upper surface shaping blade fixing member 41b3 by fitting the three pin engagement holes 41b13 of the upper surface shaping blade 41b1 onto the three pins 41b32 of the upper surface shaping blade fixing member 41b3. The pins 41b32 of the upper surface shaping blade fixing member 41b3 to which the upper surface shaping blade 41b1 is attached are inserted into the approximately circular portions at one end (outer end) of the three pin engagement holes 41b22 of the upper surface shaping blade support portion 41b2, and then the upper surface shaping blade fixing member 41b3 to which the upper surface shaping blade 41b1 is fitted is moved toward the base end so that the pins 41b32 engage with the pin engagement holes 41b22. Then, the mounting pieces 41b31 of the upper surface shaping blade fixing member 41b3 are fixed to the lateral outer plate 41b21 of the upper surface shaping blade support portion 41b2 with bolts. In this way, the upper surface shaping blade 41b1 is detachably attached to the upper surface shaping blade support portion 41b2 so that its long side (attachment region 41b12) is parallel to the rotation axis of the ridge forming portion 41. In addition, at the base end of the upstream end of the upper surface forming blade 41b1 in the rotation direction, a protrusion 41b14 (see also Figure 6) is formed that forms a ridge shoulder that is superimposed on the upper surface of the slope forming blade 41a1.

[0026] As shown in Fig. 4, when the ridge coating machine A is not in operation, the upper surface shaping blade 41b1 (two-dot chain line) is in a state in which it spreads in a direction away from the peripheral surface of the upper surface shaping blade support portion 41b2. The outer circle of the one-dot chain circles in Fig. 4 indicates the position of the outermost surface of the upper surface shaping blade 41b1 (excluding the protruding portion 41b14) in this state. Furthermore, when the ridge coating machine A is in operation, the upper surface shaping portion 41b is pressed against the upper surface E2 of the ridge E, and the upper surface shaping blade 41b1 (solid line) pressed against the upper surface E2 of the ridge E is deformed by stress from the upper surface E2 of the ridge E and comes to a state in which it wraps around the circumferential surface of the upper surface shaping blade support portion 41b2. The inner circle of the dotted chain circle in Figure 4 indicates the position of the outermost surface of the upper surface shaping blade 41b1 (excluding the protrusion portion 41b14) in this state. The upper surface shaping blade 41b1 pressed against the upper surface E2 exerts a force that expands in a direction away from the peripheral surface of the upper surface shaping blade support portion 41b2 due to its elasticity (the force that tries to return to its original state), i.e., a pressing force that presses against the upper surface E2 of the ridge. The upper surface shaping blade 41b1 uses this force to coat and harden the upper surface E2 of the ridge E. Of the eight upper surface shaping blades 41b1, only those pressed against the upper surface E2 will deform and wrap around the circumferential surface of the upper surface shaping blade support portion 41b2, but for the sake of explanation, Figures 3 and 4 show all eight upper surface shaping blades 41b1 as deformed and wrapped around the circumferential surface of the upper surface shaping blade support portion 41b2.

[0027] 6 and 7 are diagrams showing five examples of the upper surface forming blade 41b1 according to the embodiment of the present invention. FIG. 6(a) shows, from the left side, a front view, a right side view, a cross-sectional view along line aa, and a view of the outer end portion cut along line bb from the right side (outer end side). FIG. 6(b) shows, from the left side, a front view, a right side view, a cross section taken along line cc, and a view of the outer end portion cut along line dd as seen from the right side (outer end side). FIG. 6(c) is a front view and a right side view from the left side. Figure 7(a) shows, from the left side, a front view, a right side view, a cross-sectional view along line ff, a view of the outer end portion cut along line gg from the right side (outer end side), a view of a modified version of the cross-sectional view along line gg, and the bottom is a cross-sectional view along line hh. Figure 7(b) shows, from the left side at the top, a front view, a right side view, a cross-sectional view along line ii, and a view of the outer end portion cut along line jj from the right side (outer end side), the middle section shows a cross-sectional view along line kk, and the bottom section shows a modified example of the cross-sectional view along line kk. Figure 8 is a diagram showing the ridge forming unit 41 of an embodiment of the present invention. Figure 8(a) shows an example using the upper surface forming blade 41b1 shown in Figure 6(b), and Figure 8(b) shows an example using the upper surface forming blade 41b1 shown in Figure 6(c), with the upper diagram showing the non-operating state and the lower diagram showing the operating state.

[0028] 6(a) shows the upper surface shaping blade 41b1 shown in Figures 3 to 5, which has a protrusion 41b15 formed at the end on the upstream side in the direction of rotation and on the outer end side. The protrusion 41b15 protrudes toward the outer end and also protrudes downward (upstream in the direction of rotation) from the region located in the center of the upper surface shaping blade 41b1, and is configured to have a shape that widens from the outer end side to the base end side, in other words, a shape that tapers from the base end side to the outer end side. In other words, the area located on the outer end side of the upper surface shaping blade 41b1, including the protrusion 41b15, is formed in a different shape from the area located in the center of the upper surface shaping blade 41b1, and the protrusion 41b15 (area located on the outer end side of the upper surface shaping blade 41b1) presses longer and more strongly on the area F3 near the joint between the shaped portion F1 and the upper surface F2 of the original ridge, and the area F3 near the seam between the shaped portion F1 and the upper surface F2 of the previously shaped ridge, as well as the upper surface F2 of the original ridge and the upper surface F2 of the previously shaped ridge, than on the shaped portion F1 formed by other parts of the upper surface shaping blade 41b1 (areas located in the center of the upper surface shaping blade 41b1).As a result, the area F3 near the joint between the shaped portion F1 and the upper surface F2 of the original ridge and the area F3 near the seam between the shaped portion F1 and the upper surface F2 of the previously shaped ridge can be firmly molded. The lower end of protrusion 41b15 gradually slopes downward toward the outer end, i.e., the amount of downward protrusion increases toward the outer end. The size of protrusion 41b15 can be designed as appropriate, and the shape of protrusion 41b15 is not limited to a fan-shaped shape, but may be any other shape as long as it presses the vicinity F3 of the joint between formed portion F1 and the upper surface F2 of the original ridge, the vicinity F3 of the joint between formed portion F1 and the upper surface F2 of the previously formed ridge, as well as the upper surface F2 of the original ridge and the upper surface F2 of the previously formed ridge, longer and more strongly than the formed portion F1 formed by other portions of upper surface shaping blade 41b1 (the region located at the center of upper surface shaping blade 41b1).

[0029] In the example of upper surface shaping blade 41b1 shown in Figure 6(b), upper surface shaping blade 41b1 does not protrude outward, and an extension portion 41b16 is formed at the upstream and outer end of upper surface shaping blade 41b1, extending the length of upper surface shaping blade 41b1 in the rotational direction upstream in the rotational direction. The rotational length e' of the upstream and outer end of upper surface shaping blade 41b1 where extension portion 41b16 is formed is longer than the rotational length e of the central region of upper surface shaping blade 41b1. In other words, the region located on the outer end of upper surface shaping blade 41b1, including extension portion 41b16, is formed in a different shape from the central region of upper surface shaping blade 41b1. The region located at the outer end of the upper surface shaping blade 41b1, including the extension 41b16, presses the vicinity F3 of the joint between the shaped portion F1 and the upper surface F2 of the base ridge and the vicinity F3 of the joint between the shaped portion F1 and the upper surface F2 of the previously formed ridge longer and more strongly than the other portion of the upper surface shaping blade 41b1 (the region located at the center of the upper surface shaping blade 41b1), thereby firmly molding the vicinity F3 of the joint between the shaped portion F1 and the upper surface F2 of the base ridge and the vicinity F3 of the joint between the shaped portion F1 and the upper surface F2 of the previously formed ridge (see FIG. 8). Note that in this embodiment, the length (length in the rotational direction) of the extension 41b16 is gradually increased toward the outer end, so that the rigidity of the extension 41b16 gradually increases from the region located at the center of the upper surface shaping blade 41b1 toward the outer end, i.e., the pressing force against the upper surface of the ridge gradually increases. The length (length in the rotational direction) of the extension 41b16, the width (length in the axial direction of the upper surface molding portion 41b) of the extension 41b16, and the shape of the extension 41b16 can all be designed appropriately.

[0030] 6(c), an elastic member 41b17 is attached to the outer end of the upper surface shaping blade 41b1, downstream in the direction of rotation. The elastic member 41b17 increases the rigidity of the outer end of the upper surface shaping blade 41b1, making the outer end of the upper surface shaping blade 41b1 less susceptible to deformation and strengthening the pressing force against the upper surface F2 of the ridge. This allows the outer end of the upper surface shaping blade 41b1 to strongly press against the upper surface F2 of the base ridge of the shaped portion F1 and the upper surface F2 of the previously shaped ridge, thereby firmly molding the vicinity F3 of the joint between the shaped portion F1 and the upper surface F2 of the base ridge and the vicinity F3 of the joint between the shaped portion F1 and the upper surface F2 of the previously shaped ridge. 6(c), the elastic member 41b17 is a long rectangle with a pin engagement hole formed at one end. The elastic member 41b17, together with the upper surface shaping blade 41b1, is engaged with the pin 41b32 (see FIG. 4) of the upper surface shaping blade fixing member 41b3, and is fixed integrally with the upper surface shaping blade 41b1 to the upper surface shaping blade support portion 41b2.

[0031] The elastic member 41b17 may be integral with the upper surface molding blade 41b1 by the pin 41b32, or may be integral with other fasteners such as bolts, or may be integral with the upper surface molding blade 41b1 by adhesive bonding. The length (length in the rotational direction) and width (length in the axial direction of the upper surface molding portion 41b) of the elastic member 41b17 can be designed as appropriate. Furthermore, the shape of the elastic member 41b17 is not limited to a long rectangle, and any other shape is possible. For example, the elastic member 41b17 can be formed into a right-angled trapezoid or right-angled triangle and attached to the upper surface molding blade 41b1 so that the length of the elastic member 41b17 in the rotational direction gradually increases toward the outer end, thereby gradually increasing the rigidity of the upper surface molding blade 41b1 toward the outer end. The material and elastic modulus of the elastic member 41b17 can also be selected as appropriate, and the elastic member 41b17 can be made of resin, metal, rubber, etc. The elastic member 41b17 may be made of the same material as the upper surface molding blade 41b1 or a different material. It may be made of a material with a higher or lower elastic modulus than the upper surface molding blade 41b1. In addition, the position at which the elastic member 41b17 is attached may be near the joint F3 between the molded portion F1 and the upper surface F2 of the original ridge, or near the joint F3 between the molded portion F1 and the upper surface F2 of the previously molded ridge, or any other position where it can press longer and harder against the upper surface F2 of the original ridge or the upper surface F2 of the previously molded ridge than the molded portion F1 formed by other parts of the upper surface molding blade 41b1 (the area located in the center of the upper surface molding blade 41b1). Furthermore, in this embodiment, one elastic member 41b17 is attached to the upper surface shaping blade 41b1, but a configuration in which multiple elastic members 41b17 are attached may also be used. By appropriately attaching multiple elastic members 41b17 to the upper surface shaping blade 41b1, it becomes possible to finely adjust the rigidity of the upper surface shaping blade 41b1.

[0032] 7(a), a thick portion 41b18 is formed at the outer end of upper surface shaping blade 41b1 to make the outer end of upper surface shaping blade 41b1 less susceptible to deformation and to increase the pressing force that presses against ridge upper surface E2. Thick portion 41b18 increases the rigidity of the outer end of upper surface shaping blade 41b1, and the outer end of upper surface shaping blade 41b1 strongly presses against the upper surface F2 of the original ridge of shaped portion F1 and the upper surface F2 of a previously shaped ridge, thereby firmly molding the vicinity F3 of the joint between shaped portion F1 and the upper surface F2 of the original ridge, and the vicinity F3 of the joint between shaped portion F1 and the upper surface F2 of a previously shaped ridge. The width of the thick portion 41b18 (the length in the axial direction of the upper surface molding portion 41b) and the thickness of the thick portion 41b18 can both be designed appropriately. The rightmost drawing in Figure 7(a) shows an example in which the location of the thick portion 41b18 is changed. In this example, the thick portion 41b18 is formed only on a portion of the length of the upper surface molding blade 41b1 in the rotational direction. In this way, the length of the thick portion 41b18 (length in the rotational direction) can also be designed as appropriate. In the example shown in the cross-sectional view of line h-h in Figure 7(a), the thickness is increased on the back (inner) side of the upper surface shaping blade 41b1, but it is also possible to increase the thickness on the front (outer) side of the upper surface shaping blade 41b1.

[0033] 7(b), similar to that of FIG. 7(a), a thickened portion 41b18 is formed at the outer end of the upper surface shaping blade 41b1, but this thickened portion 41b18 is formed so that the thickness gradually increases from the base end to the outer end. The thickened portion 41b18 increases the rigidity of the outer end of the upper surface shaping blade 41b1, and the outer end of the upper surface shaping blade 41b1 strongly presses against the upper surface F2 of the base ridge of the shaping portion F1 and the upper surface F2 of the previously shaped ridge, thereby firmly shaping the vicinity F3 of the joint between the shaping portion F1 and the upper surface F2 of the base ridge and the vicinity F3 of the joint between the shaping portion F1 and the upper surface F2 of the previously shaped ridge. The width of the thick portion 41b18 (the length in the axial direction of the upper surface molding portion 41b), the length of the thick portion 41b18 (the length in the rotational direction), and the thickness of the thick portion 41b18 can all be designed appropriately. As shown in the kk line cross section and the k'-k' cross section in Figure 7(b), there are two configurations: one in which the thickness is increased on the back (inner) side of the upper surface shaping blade 41b1, and the other in which the thickness is increased on the front (outer) side of the upper surface shaping blade 41b1. It is also possible to increase the thickness on both the front and back sides of the upper surface shaping blade 41b1.

[0034] Another possible configuration for increasing the rigidity of the outer end side of the upper surface molding blade 41b1 is to form the outer end side of the upper surface molding blade 41b1 from a material having a higher elastic modulus than the other parts. For example, the outer end side of the upper surface molding blade 41b1 and the other parts may be formed separately from different materials, or the outer end side of the upper surface molding blade 41b1 and the other parts, which are formed separately from different materials, may be integrated by bonding or welding, or the outer end side of the upper surface molding blade 41b1 and the other parts may be integrated by two-color molding using different materials.

[0035] In the above, the shapes of the protrusion 41b15 and extension 41b16 at the end of the upper surface shaping blade 41b1 upstream in the direction of rotation and at the outer end, as shown in Figures 6(a) and (b), the configuration of attaching an elastic member 41b17 downstream in the direction of rotation at the outer end of the upper surface shaping blade 41b1 as shown in Figure 6(c), and the thick portion 41b18 formed at the outer end of the upper surface shaping blade 41b1 as shown in Figure 7 have been described as different examples, but it is also possible to configure an upper surface shaping blade 41b1 by combining two or more of these examples.

[0036] As described above, the embodiments of the present invention (including examples of the upper surface molding blade 41b1) have been described in detail with reference to the drawings, but the specific configuration is not limited to these embodiments, and the present invention also includes design changes and the like that do not deviate from the gist of the present invention. Furthermore, the above-mentioned embodiments can be combined by utilizing each other's technology as long as there are no particular contradictions or problems in their purpose, configuration, etc. [Explanation of symbols]

[0037] A Ridge coating machine 1. Mounting part 11 Hitch frame 12. Ridge coating machine power input shaft 2 Offset mechanism 21 Offset Frame 22 Link rod 23 Support frame 3 Power transmission section 4 Working section 41 Ridge forming part 41a Slope forming section 41a1 Slope forming blade 41b Top molding part 41b1 Upper surface molding blade 41b11 Molding area 41b12 Mounting area 41b13 Pin engagement hole 41b14 Overhang 41b15 Protrusion 41b16 Extension 41b17 Elastic member 41b18 Thick wall part 41b2 Upper surface molded blade support part 41b21 Lateral outer plate 41b22 Pin engagement hole 41b3 Upper surface forming blade fixing member 41b31 Mounting piece 41b32 pin 42 Pretreatment section 42a Cultivating Claw 43 Tenba Processing Department 43a Cultivating Claw 44 Grounding wheel 45 Working unit frame 46 Ridge position detection sensor mounting arm 47 Ridge position detection sensor B. Running vehicle B1 Front tire B2 rear tire B3 three-point linkage B31 Lower Link C Auto hitch

Claims

1. An elastically deformable upper surface forming blade used in an upper surface forming body of a furrow coating machine, An upper surface forming blade characterized in that the region of the upper surface forming blade corresponding to the outer end side of the upper surface forming body is shaped so that the upper surface of the ridge can be formed more firmly than other regions.

2. An upper surface shaping blade as described in claim 1, characterized in that it has a protrusion that protrudes toward the outer end side of the upper surface shaping body in a region of the upper surface shaping blade corresponding to the outer end side of the upper surface shaping body, at a location corresponding to the upstream side of the rotation direction of the upper surface shaping body.

3. An upper surface shaping blade as described in claim 1, characterized in that it has an extension portion extending upstream in the direction of rotation of the upper surface shaping body at a location corresponding to the upstream side in the direction of rotation of the upper surface shaping body in a region of the upper surface shaping blade corresponding to the outer end side of the upper surface shaping body.

4. An elastically deformable upper surface forming blade used in an upper surface forming body of a furrow coating machine, An upper surface forming blade, characterized in that a region of the upper surface forming blade corresponding to the outer end side of the upper surface forming body has higher rigidity than other regions.

5. 5. The upper surface forming blade according to claim 4, wherein a region of the upper surface forming blade corresponding to an outer end side of the upper surface forming body is thicker than other regions.

6. 5. The upper surface forming blade according to claim 4, wherein an elastic member is attached to a region of the upper surface forming blade corresponding to an outer end side of the upper surface forming body.

7. 5. The upper surface forming blade according to claim 4, wherein a region of the upper surface forming blade corresponding to the outer end side of the upper surface forming body is formed of a material having higher rigidity than other regions.

8. A cylindrical upper surface molding body used in a ridge coating machine to mold the upper surface of the ridge, An upper surface molding, The upper surface molding body has an upper surface molding blade support portion, An upper surface forming body, characterized in that a plurality of upper surface forming blades according to any one of claims 1 to 7 are attached to the upper surface forming blade support portion and aligned in the direction of rotation.

9. A ridge coating machine characterized by having an attachment section attached to a traveling body, a pre-processing section that rotates the tilling tines to cut down part of the ridge, an upper surface forming body described in claim 8, and a ridge forming body that has an approximately truncated cone-shaped slope forming body that forms the slope of the ridge.

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