Upper surface forming blade, upper surface forming body and furrow coating machine

Abstract

The present invention aims to provide an upper surface forming blade that can optimize the force pressing against the upper surface of a ridge without increasing the diameter of the upper surface forming body and regardless of the rigidity or length of the upper surface forming blade itself, an upper surface forming body having the upper surface forming blade, and a ridge coating machine having the upper surface forming body. [Solution] An elastically deformable upper surface shaping blade 41b1 used on the upper surface shaping body of a furrow coating machine, characterized in that the upper surface shaping blade 41b1 has a guide portion 41b16 that guides the rigidity of the upper surface shaping blade to increase, or a guide portion 41b16 that guides the rigidity of the upper surface shaping blade to decrease, an upper surface shaping body having the upper surface shaping blade 41b1, and a furrow coating machine having the upper surface shaping body.

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 ridges needs to be firmly coated and compacted because workers stand on it to work and walk. It is also necessary to ensure that the finished top surface of the ridges does not become uneven, scratched, or even destroyed after shaping. To enable the ridges 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 shape the ridge top surface. During operation, the multiple upper surface shaping blades are components that shape the ridge upper surface while rotating while being pressed firmly against the ridge upper surface. If the upper surface shaping blades are too hard, i.e., have too high rigidity, when they are pressed against the ridge upper surface, they are difficult to deform, and the pressing force on the ridge upper surface becomes too strong, causing the ridge surface to become uneven, scratched, or destroyed, making it impossible to form a clean ridge upper surface. Therefore, to firmly coat the ridge upper surface, it is necessary to optimize the rigidity of the upper surface shaping blades and coat the ridge upper surface while pressing the upper surface shaping blades against the ridge upper surface appropriately during operation. Furthermore, the upper surface shaping blade is a component that works while in contact with the upper surface of the ridge and is required to be wear-resistant, so it is not preferable to simply make the upper surface shaping blade thin in order to optimize rigidity.

[0005] In order to optimize the rigidity of the upper surface forming blade while ensuring its wear resistance, it is possible to increase the thickness of the upper surface forming blade and adjust the length L of the upper surface forming blade in the rotational direction (see Figure 4), i.e., the diameter Φ of the upper surface forming body (the diameter when the upper surface forming blade is open, i.e., when no stress is applied to the upper surface forming blade: see Figure 3). Increasing the length of the upper surface shaping blade in the rotational direction, i.e., increasing the diameter Φ of the upper surface shaping body, increases the elastic displacement D of the upper surface shaping blade (the amount of displacement from an open state of the upper surface shaping blade to a closed state due to stress from the top surface of the ridge; see Figure 4). However, if the diameter Φ of the upper surface shaping body is increased without changing the size of the upper surface shaping blade support part to which the upper surface shaping blade is attached in order to optimize rigidity while ensuring the wear resistance of the upper surface shaping blade, assuming a given size (diameter) of the ridge shaping body, the width diameter R acting on the slope of the slope shaping body (see Figure 3) will be smaller, resulting in a lower ridge height after shaping. While it is possible to reduce the size of the upper surface shaping blade support part to which the upper surface shaping blade is attached in order to prevent the ridge height from decreasing after shaping, there is a limit to how small this can be made in order to ensure the strength of the structure for attaching the upper surface shaping blade and the upper surface shaping blade support part itself. On the other hand, if the length in the rotational direction of the upper surface shaping blade is shortened, that is, if the size of the upper surface shaping blade support part to which the upper surface shaping blade is attached is not changed and the diameter Φ of the upper surface shaping body is reduced, when the size (diameter) of the ridge shaping body is set to a predetermined size, the width diameter R acting on the slope of the slope shaping body can be increased and the ridge height after shaping can be ensured, but the elastic displacement D of the upper surface shaping blade will be smaller and the force pressing against the ridge top surface will be stronger, making it impossible to shape a clean ridge top surface.

[0006] Therefore, the present invention aims to provide an upper surface shaping blade that can optimize the force pressing against the upper surface of the ridge without increasing the diameter of the upper surface shaping blade and regardless of the rigidity or length of the upper surface shaping blade itself, an upper surface shaping blade, and a ridge coating machine that has the upper surface shaping blade. [Means for solving the problem]

[0007] In order to solve such problems, the present invention has the following configuration. An upper surface shaping blade that is elastically deformable and is used on the upper surface shaping body of a furrow coating machine, characterized in that the upper surface shaping blade has a guide portion that guides the rigidity of the upper surface shaping blade to be higher or a guide portion that guides the rigidity of the upper surface shaping blade to be lower; an upper surface shaping blade; and a furrow coating machine that has the upper surface shaping blade. [Effects of the Invention]

[0008] The agricultural machine of the present invention can provide an upper surface shaping blade that can optimize the force pressing against the upper surface of the ridge without increasing the diameter of the upper surface shaping blade and regardless of the rigidity or length of the upper surface shaping blade itself, an upper surface shaping body having said upper surface shaping blade, and a ridge coating machine ridge shaping body having said upper surface shaping body. [Brief explanation of the drawings]

[0009] [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] FIG. 2 is a partially enlarged view of an upper surface molding portion 41b according to the 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. 10 is a partially enlarged view of an upper surface molding portion 41b of a modified example. DETAILED DESCRIPTION OF THE INVENTION

[0010] [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.

[0011] [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.

[0012] 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.

[0013] [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.

[0014] 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.

[0015] [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.

[0016] 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.

[0017] [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 both front and rear ends of the power transmission unit 3 are coaxial with the rotation shafts at both 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 both 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.

[0018] [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 roughly cylindrical and coaxial with the slope forming section 41a (the details will be described later, but 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.

[0019] 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.

[0020] 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.

[0021] [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. 5A and 5B are diagrams showing the ridge forming unit 41 according to an embodiment of the present invention, with (a) showing the unit in a non-operating state and (b) showing the unit in an operating state. Note that in the operating state, only the upper surface forming blades 41b1 pressed against the upper surface E2 of the ridge E are deformed by stress from the ridge E, but for convenience, the right diagram of FIG. 5B shows a state in which all of the upper surface forming blades 41b1 are deformed. 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 .

[0022] [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.

[0023] [Top molding part] 4, the upper surface molding section 41b has eight elastically deformable, generally 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 forming blade support portion 41b2 is attached to the rotary shaft, and the base end side is detachably attached to the top of the slope forming portion 41a. The upper surface shaping blade 41b1 has a shaping region 41b11, which, when attached to the upper surface shaping blade support part 41b2, is pressed against the upper ridge surface, which is curved slightly like an arc, on the upstream side in the direction of rotation, to shape the upper ridge surface, and a flat mounting region 41b12, which, when attached to the upper surface shaping blade support part 41b2, is continuous with the shaping region 41b11 on the downstream side in the direction of rotation and is attached to the upper surface shaping blade support part 41b2. Note that, as will be described in detail later, a guide portion 41b16 is provided at the boundary periphery 41b15 between the shaping region 41b11 and the mounting region 41b12, which is an area caused by the elastic deformation of the shaping region 41b11, to guide the upper surface shaping blade 41b1 to increase or decrease its rigidity. Inducing increased rigidity means inducing a smaller amount of deformation (less likely to deform) when the upper surface shaping blade 41b1 is pressed against the top surface of the ridge, i.e., inducing a smaller amount of elastic displacement, and inducing a stronger pressing force with which the upper surface shaping blade 41b1 presses against the top surface of the ridge. Inducing decreased rigidity means inducing a larger amount of deformation (easier to deform) when the upper surface shaping blade 41b1 is pressed against the top surface of the ridge, i.e., inducing a larger amount of elastic displacement, and inducing a weaker pressing force with which the upper surface shaping blade 41b1 presses against the top surface of the ridge.

[0024] 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.

[0025] 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 region 41b12 has three pin engagement holes 41b13 aligned in the longitudinal direction of the mounting region 41b12, into which pins 41b32 provided on the upper surface molding blade fixing member 41b3 (described later) can be fitted (see FIG. 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.

[0026] 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 through) 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.

[0027] The method for attaching the upper surface shaping blade 41b1 to the upper surface shaping blade support portion 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 end upstream of the rotation direction of the upper surface forming blade 41b1, at the end on the base end side, there is formed a protrusion 41b14 (see also Figure 7) that forms a ridge shoulder that is superimposed on the upper surface of the slope forming blade 41a1.

[0028] As shown in Figure 5(a), when the ridge coating machine A is not in operation, the upper surface shaping blade 41b1 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 among the dotted and dashed circles in Figure 4 indicates the position of the outermost surface of the upper surface shaping blade 41b1 (excluding the protruding portion 41b14) in this state. As shown in Figure 5(b), 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 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 deform and wrap around the circumferential surface of the upper surface shaping blade support portion 41b2, but for the sake of explanation, the right-hand figures in Figures 3, 4, and 5(b) 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.

[0029] Figure 6 is a partially enlarged view of the upper surface molding portion 41b, showing three different examples of the upper surface molding portion 41b, specifically, the upper surface molding blade 41b1. Figure 6(a) shows a conventional upper surface molding blade 41b1, with only the mounting portion cut away to show a cross section. Figures 6(b) and 6(c) each show a different example of the upper surface molding blade 41b1 according to an embodiment of the present invention, and also show a cross section of the boundary peripheral portion 41b15. In the example shown in Fig. 6(b), a guide portion 41b16 is provided in the boundary peripheral portion 41b15 to guide the upper surface shaping blade 41b1, which is formed by a recess that is thinner than the other regions of the upper surface shaping blade 41b1, to decrease the rigidity (to make it easier to deform), and in the example shown in Fig. 6(c), a guide portion 41b16 is provided in the boundary peripheral portion 41b15 to guide the upper surface shaping blade 41b1, which is formed by a protrusion that is thicker than the other regions of the upper surface shaping blade 41b1, to increase the rigidity (to make it harder to deform). Note that, of the upper surface shaping blade 41b1 shown in the figure, the solid line indicates the working state (the state pressed against the upper surface E2), and the two-dot chain line indicates the non-working state (the state not pressed against the upper surface E2). As described above, in upper surface molding portion 41b that coats and hardens upper surface E2, it is important to optimize the rigidity of upper surface molding blade 41b1, and it is also necessary to consider wear resistance.

[0030] In the example of upper surface shaping vane 41b1 shown in Fig. 6(b), a guide portion 41b16 is formed by a recess that is thinner than the other portions of upper surface shaping vane 41b1 (portions other than boundary peripheral portion 41b15) on the attachment region 41b12 side of the shaping region 41b11 of upper surface shaping vane 41b1, i.e., at boundary peripheral portion 41b15, where deformation of upper surface shaping vane 41b1 occurs. This guide portion 41b16 guides upper surface shaping vane 41b1 to have a lower rigidity. In the example of upper surface shaping vane 41b1 shown in Fig. 6(b), because guide portion 41b16 is formed by a recess, the rigidity of upper surface shaping vane 41b1 is lowered. When shaping region 41b11 is pressed against upper surface E2, upper surface shaping vane 41b1 is more likely to deform and the pressing force pressing against upper surface E2 is smaller than in the conventional upper surface shaping vane 41b1 shown in Fig. 6(a). For example, if the overall thickness of upper surface shaping blade 41b1 is increased to improve wear resistance, the overall rigidity of upper surface shaping blade 41b1 will increase, which means that upper surface shaping blade 41b1 will be less likely to deform, and the pressing force pressing against upper surface E2 will increase. In response to this, by providing guide portions 41b16 formed by recesses that are thinner than other portions of upper surface shaping blade 41b1 at boundary peripheral portions 41b15 resulting from elastic deformation of upper surface shaping blade 41b1, the rigidity of boundary peripheral portions 41b15 can be partially reduced, making upper surface shaping blade 41b1 more easily deformed (flexible). In other words, by appropriately providing guide portions 41b16 formed by recesses corresponding to the portions to be deformed (bent) during operation, the rigidity of the entire upper surface shaping blade 41b1 can be prevented from becoming too high, and the rigidity of the entire upper surface shaping blade 41b1 can be optimized. The guide portion 41b16 formed by the recess may be a recess having a shape that gradually reduces in thickness from the other portion of the upper surface forming blade 41b1.

[0031] In the example of upper surface shaping vane 41b1 shown in Fig. 6(c), a guide portion 41b16 is formed by a convex portion that is thicker than the other portions of upper surface shaping vane 41b1 (portions other than boundary peripheral portion 41b15) on the attachment region 41b12 side of the shaping region 41b11 of upper surface shaping vane 41b1, i.e., at boundary peripheral portion 41b15, where deformation of upper surface shaping vane 41b1 occurs. This guide portion 41b16 guides upper surface shaping vane 41b1 to be rigid. In the example of upper surface shaping vane 41b1 shown in Fig. 6(b), because guide portion 41b16 is formed by a convex portion, the rigidity of upper surface shaping vane 41b1 is increased. When shaping region 41b11 is pressed against upper surface E2, upper surface shaping vane 41b1 is less likely to deform and the pressing force pressing against upper surface E2 is greater than in the conventional upper surface shaping vane 41b1 shown in Fig. 6(a). For example, if the upper surface shaping blade 41b1 is made of a material with a low modulus of elasticity, the rigidity of the entire upper surface shaping blade 41b1 will be low. In response to this, by providing guide portions 41b16 formed by convex portions that are thicker than other portions of upper surface shaping blade 41b1 at boundary peripheral portion 41b15 caused by elastic deformation of upper surface shaping blade 41b1, the rigidity of boundary peripheral portion 41b15 can be increased, making upper surface shaping blade 41b1 less likely to deform (bend). In other words, by appropriately providing guide portions 41b16 formed by convex portions corresponding to portions that should not be deformed (not bent too much) during operation, it is possible to prevent the rigidity of the entire upper surface shaping blade 41b1 from decreasing, and to optimize the rigidity of the entire upper surface shaping blade 41b1. The guide portion 41b16 formed by the convex portion may be a convex portion having a shape that gradually increases in thickness from the other portion of the upper surface forming blade 41b1. Since the guide portion 41b16 is provided to guide the rigidity of the upper surface forming blade 41b1, it is undesirable for its thickness to change due to wear. Therefore, it is preferable that the guide portion 41b16 be provided on the attachment region 41b12 side of the forming region 41b11, which is less likely to come into contact with the upper surface E2, i.e., in the boundary peripheral portion 41b15.

[0032] Figure 7 shows four examples of the upper surface shaping blade 41b1 of the embodiment. The left drawings in each of Figures 7(a) to (e) show plan views of the upper surface shaping blade 41b1, the right drawings in Figures 7(a), (b), and (d) are partial cross-sectional views of the right side view of the upper surface shaping blade 41b1, and Figures 7(c) and (e) are right side views of the upper surface shaping blade 41b1. Figure 7(a) shows the upper surface forming blade 41b1 shown in Figure 6(b), and a guide portion 41b16 formed by a recess that is thinner than other portions is formed on the mounting area 41b12 side of the forming area 41b11 of the upper surface forming blade 41b1, i.e., on the boundary peripheral portion 41b15, so as to extend parallel to the long side of the upper surface forming blade 41b1. Figure 7(b) shows an example in which the position of the guide portion 41b16 formed by the recess provided in the upper surface molding blade 41b1 shown in Figure 7(a) is changed, and the guide portion 41b16 that guides so as to reduce rigidity is formed in addition to the boundary peripheral portion 41b15. The guide portion 41b16 is formed in three places in total: one at the outer end portion of the upper surface molding portion 41b, on the attachment region 41b12 side of the molding region 41b11, and one each at the base end portion of the upper surface molding portion 41b, on the attachment region 41b12 side of the molding region 41b11 and on the protruding portion 41b14 side.

[0033] 7(b), the upper surface forming blade 41b1 has guide portions 41b16 formed by recesses at the outer end portion of the upper surface forming portion 41b, i.e., the portion corresponding to the outer end of the formed portion of the upper surface E2, and at the base end portion of the upper surface forming portion 41b, i.e., the portion corresponding to the ridge shoulder of the upper surface E2, which guide the lowering of the rigidity. This partially reduces the rigidity of the outer end portion of the upper surface forming portion 41b and partially reduces the rigidity of the base end portion of the upper surface forming portion 41b, thereby partially changing the deformability of the upper surface forming blade 41b1 and partially reducing the pressing force pressing against the upper surface E2. In other words, the rigidity of the upper surface forming blade 41b1 is optimized for each portion.

[0034] Figure 7(c) shows the upper surface forming blade 41b1 shown in Figure 6(c), and on the mounting area 41b12 side of the forming area 41b11 of the upper surface forming blade 41b1, i.e., on the boundary peripheral portion 41b15, a guide portion 41b16 formed by a convex portion that is thicker than other portions is formed so as to extend parallel to the long side of the upper surface forming blade 41b1.

[0035] In the example of the upper surface forming blade 41b1 shown in Figure 7(d), three guide portions 41b16 formed by holes are formed in the attachment region 41b12 side of the forming region 41b11 of the upper surface forming blade 41b1, i.e., in the boundary peripheral portion 41b15. The provision of the guide portions 41b16 formed by holes reduces the rigidity of the upper surface forming blade 41b1 in some places. In other words, the guide portions 41b16 formed by holes are appropriately provided to correspond to the parts to be deformed (bent) during operation. For example, the rigidity of the upper surface forming blade 41b1 can be optimized by changing the size of the holes or the area ratio of the holes to the forming region 41b11. 7(d), the guide portion 41b16 is formed in three separate locations: one at the outer end portion of the upper surface molding portion 41b, one at the base end portion, and one at an intermediate portion between them. Of these, the guide portion 41b16 formed by a hole formed in the base end portion is large, and the rigidity of the base end side of the upper surface molding blade 41b1 is lower.

[0036] In the example of the upper surface shaping blade 41b1 shown in Figure 7(e), a guide portion 41b16 formed by a bent portion is formed on the attachment region 41b12 side of the shaping region 41b11 of the upper surface shaping blade 41b1, i.e., the boundary peripheral portion 41b15, so as to guide the upper surface shaping blade 41b1 to have low rigidity, and the guide portion 41b16 extends parallel to the long side of the upper surface shaping blade 41b1. The provision of the guide portion 41b16 formed by a bent portion reduces the rigidity of the upper surface shaping blade 41b1. In other words, the rigidity of the upper surface shaping blade 41b1 can be optimized by appropriately providing the guide portion 41b16 formed by a bent portion corresponding to the portion to be deformed (bent) during operation.

[0037] In the example shown in Figure 7(c) above, a guide portion 41b16 is formed by increasing the thickness of the attachment area 41b12 side of the upper surface molding blade 41b1, i.e., a part of the boundary peripheral portion 41b15.However, it is also possible to form the guide portion 41b16 by attaching another member by adhesive to the attachment area 41b12 side of the upper surface molding blade 41b1, i.e., a part of the boundary peripheral portion 41b15, to guide the blade so as to increase its rigidity. Furthermore, the guide portion 41b16 can also be formed by molding a portion of the upper surface molded blade 41b1 from a material having a different elastic modulus from the other portions. For example, one portion of the upper surface molded blade 41b1 and the other portions may be formed separately from different materials, and the two or more portions formed separately from different materials may be integrated by bonding, welding, or the like, or one portion of the upper surface molded blade 41b1 and the other portions may be formed integrally from different materials by two-color molding. In addition, the size, shape, etc. of the guide portion 41b16, the size, shape, thickness, etc. of the recesses and protrusions that form the guide portion 41b16, and the size, shape, thickness, and formation location, etc. of the holes that form the guide portion 41b16 can be designed appropriately depending on the material, etc. of the upper surface molding blade 41b1.

[0038] [Variations] Figure 8 is a partially enlarged view of the upper surface shaping portion 41b of a modified example, showing four different examples of the upper surface shaping blade 41b1. Figure 8(a) is a view showing a partial modification of the upper surface shaping blade 41b1 of Figure 6(a), Figures 8(b) and 8(d) are views showing a partial modification of the upper surface shaping blade 41b1 of Figure 6(b), and Figure 8(c) is a view showing a partial modification of the upper surface shaping blade 41b1 of Figure 6(c). Note that, of the upper surface shaping blades 41b1 shown in the figures, the solid line indicates the working state (a state pressed against the upper surface E2), and the two-dot chain line indicates the non-working state (a state not pressed against the upper surface E2). The area upstream of the upper surface shaping blade 41b1 in the rotation direction is pressed strongly against the upper surface of the ridge and is subject to large wear, so by making this area thicker, wear resistance is improved. In the upper surface forming blade 41b1 shown in FIGS. 8(a) to 8(c), a thick portion 41b1a is formed in the end region on the upstream side in the rotation direction, which is thicker than the thickness of other regions. In the upper surface molded blade 41b1 shown in FIG. 8(d), a thick portion 41b1a that is thicker than the other regions is formed in a region slightly away from the upstream end in the rotation direction. By forming the thick portion 41b1a, it is possible to improve the wear resistance without increasing the overall thickness of the upper surface molding blade 41b1, i.e., without increasing the rigidity of the upper surface molding blade 41b1, thereby achieving both optimization of rigidity and improvement of wear resistance. The thickness, shape, and location of the thick portion 41b1a can be appropriately designed depending on the material of the upper surface forming blade 41b1.

[0039] As described above, in the present invention, the rigidity of the upper surface shaping blade 41b1 is optimized to optimize the force with which the upper surface shaping blade 41b1 of the upper surface shaping portion 41b presses the upper surface of the ridge. The thickness of the upper surface shaping blade 41b1 is one factor that affects the rigidity of the upper surface shaping blade 41b1, and the thickness of the upper surface shaping blade 41b1 affects the wear resistance of the upper surface shaping blade 41b1. Hereinafter, how to design the upper surface shaping blade 41b1 will be described, taking into consideration the force with which the upper surface shaping blade 41b1 presses the upper surface of the ridge and the wear resistance. First, consider a case where the thickness of upper surface shaping blade 41b1 does not need to be increased from the viewpoint of wear resistance due to the material of upper surface shaping blade 41b1, etc. In this case, there are two cases in which the force with which upper surface shaping blade 41b1 presses upper surface E2 can be optimized: either by lowering the rigidity of upper surface shaping blade 41b1 or by increasing the rigidity. When uniformly lowering the rigidity of the upper surface forming blade 41b1, as in the upper surface forming blade 41b1 shown in FIG. 7(a), a guide portion 41b16 is uniformly formed from the base end side to the outer end side of the upper surface forming blade 41b1 to guide the rigidity to be lowered by a recess, or as in the upper surface forming blade 41b1 shown in FIG. 7(e), a guide portion 41b16 is uniformly formed from the base end side to the outer end side of the upper surface forming blade 41b1 to guide the rigidity to be lowered by a bent portion. In order to partially reduce the rigidity of the upper surface forming blade 41b1, it is conceivable to partially form a guide portion 41b16 in the upper surface forming blade 41b1 that guides the rigidity to be reduced by a recess, as in the upper surface forming blade 41b1 shown in Figure 7(b), or to partially form a guide portion 41b16 in the upper surface forming blade 41b1 that guides the rigidity to be reduced by a hole, as in the upper surface forming blade 41b1 shown in Figure 7(d). When uniformly increasing the rigidity of the upper surface shaping blade 41b1, it is possible to uniformly form a guide portion 41b16 that guides the upper surface shaping blade 41b1 to increase its rigidity by the convex portion from the base end to the outer end, as in the upper surface shaping blade 41b1 shown in Figure 7(c), or to partially form a guide portion 41b16 in the upper surface shaping blade 41b1 that guides the upper surface shaping blade 41b1 to increase its rigidity by the convex portion in order to partially increase the rigidity of the upper surface shaping blade 41b1.

[0040] Next, consider the case where the thickness of the entire upper surface forming blade 41b1 is increased in order to improve the wear resistance. In this case, when it is desired to lower or increase the rigidity of the upper surface shaping blade 41b1, if there is no need to increase the thickness of the upper surface shaping blade 41b1 as described above, it is possible to uniformly form a guide portion 41b16 from the base end to the outer end of the upper surface shaping blade 41b1 that guides the rigidity to be lowered by a recess, partially form a guide portion 41b16 in the upper surface shaping blade 41b1 that guides the rigidity to be lowered by a recess, partially form a guide portion 41b16 in the upper surface shaping blade 41b1 that guides the rigidity to be lowered by a hole, uniformly form a guide portion 41b16 from the base end to the outer end of the upper surface shaping blade 41b1 that guides the rigidity to be lowered by a convex portion, or partially form a guide portion 41b1 in the upper surface shaping blade 41b1 that guides the rigidity to be lowered by a convex portion, in the same way as lowering or increasing the rigidity of the upper surface shaping blade 41b1. Furthermore, in order to improve wear resistance, it is also conceivable to thicken the upper surface shaping blade 41b1 in part. As with the upper surface shaping blade 41b1 shown in Fig. 8, it is conceivable to thicken the parts that are subject to greater wear. When it is desired to lower or increase the rigidity of the upper surface shaping blade 41b1 that has been partially thickened, in the same way as lowering or increasing the rigidity of the upper surface shaping blade 41b1 when it is not necessary to increase the thickness of the upper surface shaping blade as described above, it is possible to uniformly form a guide portion 41b16 from the base end side to the outer end side of the upper surface shaping blade 41b1 that guides the blade to lower its rigidity by a recess, or to form a guide portion 41b16 in the upper surface shaping blade 41b1 that guides the blade to lower its rigidity by a recess. It is conceivable to partially form a guide portion 41b16 in the upper surface forming blade 41b1 to guide the blade to lower its rigidity by a hole, to uniformly form a guide portion 41b16 in the upper surface forming blade 41b1 from the base end side to the outer end side by a convex portion to guide the blade to lower its rigidity, or to partially form a guide portion 41b16 in the upper surface forming blade 41b1 to guide the blade to lower its rigidity by a convex portion.

[0041] As described above, the embodiments and modifications of the present invention have been described in detail with reference to the drawings, but the specific configurations are not limited to these embodiments and modifications, and in particular, the position and shape of the guide portions and the number of guide portions to be formed can be changed as appropriate, and even design changes that do not deviate from the gist of the present invention are included in the present invention. Furthermore, the above-described embodiments and modifications can be combined by utilizing each other's technologies as long as there are no particular contradictions or problems in their purposes, configurations, etc. [Explanation of symbols]

[0042] 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 forming blade 41b11 Molding area 41b12 Mounting area 41b13 Pin engagement hole 41b14 Overhang 41b15 Boundary periphery 41b16 Induction part 41b1a 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, The upper surface forming blade is characterized in that it has a guide portion that guides the rigidity of the upper surface forming blade to be increased or a guide portion that guides the rigidity of the upper surface forming blade to be decreased.

2. The upper surface forming blade according to claim 1 , wherein the guide portion has a thickness different from that of a region of the upper surface forming blade that is different from the guide portion of the upper surface forming blade.

3. 2. The upper surface molded blade according to claim 1, wherein the guide portion is a hole.

4. 2. The upper surface molded blade according to claim 1, wherein the guide portion is a bent portion.

5. 2. The upper surface forming blade according to claim 1, wherein the guide portion is provided on the side of the upper surface forming body to which the upper surface forming blade is attached, in an area where the upper surface forming blade is attached to the upper surface forming blade support portion.

6. An upper surface shaping blade according to any one of claims 1 to 5, characterized in that the thickness of the upstream region of the upper surface shaping blade in the rotation direction is made thicker than the thickness of other regions.

7. A cylindrical upper surface molding body used in a ridge coating machine to mold the upper surface of the ridge, 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 5 are attached to the upper surface forming blade support portion in a circumferentially aligned manner.

8. A ridge coating machine characterized by having an attachment part attached to a traveling body, a pre-processing part that cuts away part of the ridge by rotating the tilling tines, an upper surface forming body described in claim 7, 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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