Ridge plastering machine and ridge shaping body

Abstract

To provide a ridge-forming machine that includes a ridge-forming body capable of forming strong ridges while suppressing vibrations. [Solution] The ridge-forming machine is a ridge-forming machine having a ridge-shaping body connected to a traveling machine body and which forms ridges while rotating around a rotation axis, wherein the ridge-shaping body has a slope step portion and comprises a slope forming portion that forms the slope of the ridge, a ridge shoulder forming portion that forms the shoulder portion of the ridge, and an upper surface forming portion that forms the upper surface of the ridge, wherein a ridge shoulder step portion is provided on the outer circumferential surface of the ridge shoulder forming portion, and the center of the rotation axis is not located on the extension line of the slope step portion and the ridge shoulder step portion when viewed from the axial direction of the rotation axis.

Description

Technical Field

[0001] The present invention relates to a ridging machine and a ridging body.

Background Art

[0002] Conventionally, a ridging machine is known as an agricultural working machine for forming ridges in paddy fields. Generally, the ridging machine forms a new ridge by newly adding soil to the broken old ridge, rotating a forming body that abuts against the side surface of the ridge, and compacting the filled soil against the old ridge. For example, Patent Document 1 discloses a ridging machine that forms the side surface and the upper surface of a ridge. The ridging machine of Patent Document 1 is provided with a member for forming a ridge shoulder (also referred to as a "ridge shoulder forming part") that connects a member for generating an upper surface (also referred to as an "upper surface forming part" or an "upper surface roller") and a member for forming a side surface (also referred to as a "side surface forming part").

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] On the other hand, although the ridge shoulder forming part of Patent Document 1 has a frustum of a cone shape, the ridge shoulder part is not sufficiently compacted, leaving a problem in the strength of the ridge shoulder part. In addition, since there is a height deviation between the side surface forming part and the ridge shoulder forming part, vibration occurs during ridge formation.

[0005] In view of such problems, one object of the present invention is to provide a ridging machine including a ridging body capable of forming a strong ridge while suppressing vibration.

Means for Solving the Problems

[0006] A levee-forming machine in one embodiment of the present invention is a levee-forming machine having a levee-shaping body connected to a traveling machine body and rotating around a rotation axis to form a levee, wherein the levee-shaping body has a slope step portion and comprises a slope shaping portion for shaping the slope of the levee, a levee shoulder shaping portion for shaping the shoulder portion of the levee, and an upper surface shaping portion for shaping the upper surface of the levee, wherein a levee shoulder step portion is provided on the outer circumferential surface of the levee shoulder shaping portion, and the center of the rotation axis is not located on the extension line of the slope step portion and the levee shoulder step portion when viewed from the axial direction of the rotation axis.

[0007] In the above-described ridge-forming machine, the ridge shoulder step portion may be provided parallel to the slope step portion.

[0008] In the above-described ridge-forming machine, the ridge shoulder step portion may be formed in a non-linear shape.

[0009] A ridge shaping body in one embodiment of the present invention is a ridge shaping body that forms ridges while rotating around a rotation axis, and has a slope step portion, comprising a slope forming portion that forms the slope of the ridge, a ridge shoulder forming portion that forms the shoulder portion of the ridge, and an upper surface forming portion that forms the upper surface of the ridge, wherein a ridge shoulder step portion is provided on the outer circumferential surface of the ridge shoulder forming portion, and the center of the rotation axis is not located on the extension line of the slope step portion and the ridge shoulder step portion when viewed from the axial direction of the rotation axis. [Effects of the Invention]

[0010] According to one embodiment of the present invention, a ridge-forming machine is provided that includes a ridge-forming body capable of forming strong ridges while suppressing vibrations. [Brief explanation of the drawing]

[0011] [Figure 1] This is a side view showing the configuration of a ridge-forming machine in its stored state according to the first embodiment of the present invention. [Figure 2] This is a top view showing the configuration of a ridge-forming machine in its stored state according to the first embodiment of the present invention. [Figure 3] This is a perspective view showing the configuration of a ridged body according to the first embodiment of the present invention. [Figure 4]This is an enlarged perspective view showing the configuration of a ridged structure according to the first embodiment of the present invention. [Figure 5] This is a side view showing the configuration of a ridged body according to the first embodiment of the present invention. [Figure 6] This is an enlarged side view showing the configuration of a ridged body according to the first embodiment of the present invention. [Figure 7] This is a rear view showing the configuration of a ridged body according to the first embodiment of the present invention. [Figure 8] This is a top view showing the configuration of a ridge-forming machine in operation according to the first embodiment of the present invention. [Figure 9] This is a front view showing the configuration of a prepared furrow in a working state according to the first embodiment of the present invention. [Figure 10] This is a side view showing the configuration of a prepared furrow in a working state according to the first embodiment of the present invention. [Figure 11] This is a perspective view showing the configuration of a ridged body according to the first embodiment of the present invention. [Figure 12] This is a perspective view showing the configuration of a ridged body according to the first embodiment of the present invention. [Figure 13] This is a side view showing the configuration of a ridged body according to the first embodiment of the present invention. [Figure 14] This is a perspective view showing the configuration of a ridged body according to the first embodiment of the present invention. [Modes for carrying out the invention]

[0012] A first embodiment of the ridge-forming machine of the present invention will be described below with reference to the drawings. However, the ridge-forming machine of one embodiment of the present invention can be implemented in many different ways, and the description below is not limited to the examples shown. In the drawings referenced in this embodiment, the same parts or parts having similar functions are denoted by the same reference numerals, and repeated descriptions thereof are omitted.

[0013] In the following description, for the sake of convenience of explanation, terms indicating directions such as "up", "down", "front", "rear", "right", and "left" are used. However, for the ridging machine according to an embodiment of the present invention, the direction in which gravity acts is "down", and the opposite is "up". Also, the direction of travel during work is "front", and the opposite is "rear". Further, toward the "front", the right side is "right", and the left side is "left".

[0014] (First Embodiment) (1-1. Configuration of Ridging Machine 100) FIG. 1 is a side view schematically showing the configuration of the ridging machine 100 according to the first embodiment of the present invention. FIG. 2 is a top view schematically showing the configuration of the ridging machine 100 according to the first embodiment of the present invention. As shown in FIG. 1, the ridging machine 100 of the present embodiment includes a mounting portion 110, a power transmission portion 120, an offset mechanism portion 130, a ridging body 140, a pre-treatment portion 150, and a top field treatment portion 160. However, the configuration of the ridging machine 100 of the present embodiment is not limited to the configuration shown in FIGS. 1 and 2.

[0015] The mounting portion 110 includes a lower link connecting portion 111, a top link connecting portion 112, a hitch frame 113, and an input shaft 114, and is mounted on a three-point link mechanism of a traveling machine body (not shown) such as a tractor. The connection between the ridging machine 100 and the traveling machine body may be via an auto hitch frame mounted on the three-point link mechanism of the traveling machine body.

[0016] The hitch frame 113 includes a mechanism for transmitting the power transmitted to the input shaft 114 to the power transmission portion 120. The input shaft 114 is connected to the PTO shaft of the traveling machine body via a transmission joint such as a universal joint. The power output from the traveling machine body is transmitted to the input shaft 114. Although not shown in the figure, a control portion is provided in the hitch frame 113 of the mounting portion 110. The control portion includes an arithmetic processing device, a storage device, a communication device, etc., and has a function of controlling the overall operation of the ridging machine 100.

[0017] The power transmission unit 120 is a mechanism that transmits power input to the mounting unit 110 to the ridge shaping body 140, the pre-processing unit 150, and the top-of-the-ridge processing unit 160. Although not shown in the figures, in this embodiment, the power transmission unit 120 of the ridge shaping machine 100 is composed of a winding drive device. Specifically, the power transmission unit 120 is composed of a chain drive device having a pair of sprockets and a roller chain. However, the power transmission unit 120 is not limited to this example and may be a belt drive device having a pair of pulleys and a belt, or a universal joint.

[0018] The offset mechanism 130 is positioned between the mounting section 110 and the ridge-forming body 140, and rotates relative to the mounting section 110 to offset the ridge-forming body 140 in the left-right direction. The offset mechanism 130 includes a parallel link mechanism rotatably connected to the mounting section 110 and the ridge-forming body 140. That is, by rotating the offset mechanism 130 relative to the mounting section 110, the ridge-forming body 140 can be moved in the left-right direction while maintaining its orientation (e.g., direction of the rotation axis) and posture. However, the specific configuration of the offset mechanism 130 is not limited to this example; any mechanism capable of offsetting the ridge-forming body 140 laterally is acceptable. Furthermore, the offset mechanism 130 can offset the pre-processing section 150 and the top-of-the-field processing section 160.

[0019] The offset mechanism 130 includes a first link arm 131, a second link arm 132, and a third link arm 133. The front end of the first link arm 131 is rotatably connected to the hitch frame 113, and its rear end is rotatably connected to the third link arm 133. The second link arm 132 is positioned below the power transmission unit 120, and its front end is rotatably connected to the hitch frame 113, and its rear end is rotatably connected to the third link arm 133. At this time, the first link arm 131 and the second link arm 132 are positioned approximately parallel to each other. The third link arm 133 is also positioned approximately parallel to the hitch frame 113. Thus, the offset mechanism 130 includes a parallel link mechanism composed of the hitch frame 113, the first link arm 131, the second link arm 132, and the third link arm 133.

[0020] In this embodiment, the offset mechanism 130 can offset the ridge shaping body 140, the pre-processing section 150, and the top surface processing section 160 in the left-right direction by operating the parallel link mechanism described above using an actuator (for example, an electric cylinder) not shown.

[0021] The ridge shaping body 140 includes a slope forming section 141, an upper surface forming section 143, and a ridge shoulder forming section 145, all of which are rotatably supported. Power transmitted to the ridge shaping body 140 via the power transmission section 120 is input as rotational power. The slope forming section 141, the upper surface forming section 143, and the ridge shoulder forming section 145 rotate together due to the input power, forming a ridge at a lateral position of the ridge plastering machine 100. Specifically, the slope of the ridge is formed by the slope forming section 141, the upper surface (top) of the ridge is formed by the upper surface forming section 143, and the shoulder portion of the ridge is formed by the ridge shoulder forming section 145. The specific structure of the ridge shaping body 140 will be described later. In this specification, the virtual axis that serves as the rotation center of the ridge shaping body 140 is referred to as the rotation axis 140c.

[0022] The pre-processing unit 150, also called the soil embankment unit (or tilling unit), has the role of cutting away a portion of the old ridge and supplying soil to the ridge-forming unit 140. The pre-processing unit 150 has a rotatably supported rotating shaft 150c and a plurality of tines 151 provided on the rotating shaft 150c. The rotating tines 151 come into contact with the old ridge to cut away the old ridge and throw the soil toward the ridge-forming unit 140. The ridge-forming unit 140 forms a new ridge by applying the soil thrown by the pre-processing unit 150 to the cut-away old ridge. In this embodiment, the rotating shaft 150c is positioned at an inclination with respect to an axis parallel to the direction of travel of the traveling machine, so that it gets closer to the ridge as it moves forward.

[0023] The top-of-the-ridge processing unit 160 has the role of cutting away a portion of the top of the old ridge. Similar to the pre-processing unit 150, the top-of-the-ridge processing unit 160 has a plurality of rotatably mounted claws 161. The top-of-the-ridge processing unit 160 cuts away a portion of the top surface of the old ridge by bringing the rotated claws 161 into contact with the top portion of the old ridge. Soil supplied from the pre-processing unit 150 is piled up in the cut-away portion. The top surface with the piled-up soil is pressed and shaped by the top surface shaping unit 143 of the ridge shaping body 140.

[0024] (1-2. Composition of the ridged section 140) Figure 3 is a perspective view of the ridge-forming body 140 in the first embodiment of the present invention. Figure 4 is an enlarged view of a part of the perspective view of the ridge-forming body 140 in the first embodiment of the present invention. Figure 5 is a side view of the ridge-forming body 140 in the first embodiment of the present invention. Figure 6 is an enlarged view of a part of the ridge-forming body 140 in the first embodiment of the present invention. Figure 7 is a rear view (rear view) of the ridge-forming body 140 in the first embodiment of the present invention. Each component of the ridge-forming body 140 will be described in detail.

[0025] (1-2-1. Structure of the slope forming section 141) The slope forming section 141 has a substantially frustoconical shape. The slope forming section 141 is constructed by connecting a plurality (eight in this embodiment) of forming plates 1411 to each other. As shown in Figure 4, each forming plate 1411 has an end on the downstream side (front) in the rotation direction R (hereinafter referred to as the "downstream end 1411a"), an end on the upstream side (rear) in the rotation direction R (hereinafter referred to as the "upstream end 1411b"), and a surface that exerts force on the slope of the ridge (hereinafter referred to as the "acting surface 1411c"). The slope forming section 1411 is connected to each other by fixing the downstream end 1411a and the upstream end 1411b of adjacent forming plates 1411 by welding or the like. At this time, a slope step section 1413, which is a step, is provided between adjacent forming plates 1411. More specifically, as shown in Figure 4, in adjacent molded plates 1411, the step formed by the upstream end 1411b of molded plate 1411-1 located downstream in the rotational direction R and the molded plate 1411-2 located upstream in the rotational direction R is the slope step portion 1413, and the upstream end 1411b of molded plate 1411-1 located downstream in the rotational direction R forms the top (highest position) of the step. At this time, as shown in Figure 6, when viewed from the axial direction of the rotation axis 140c, the center of the rotation axis 140c is not located on the extension line L1413 of the slope step portion 1413, that is, on the extension line of the upstream end 1411b of the molded plate 1411.

[0026] It should be noted that this connection method is merely one example and is not limited to this example. For example, the slope forming section 141 may be constructed by preparing two annular frames that serve as the base of the slope forming section 141 and fixing a plurality of forming plates 1411 to each annular frame. In this case, the forming plates 1411 are not directly connected to each other as in this embodiment, but are indirectly connected to each other via the frames. Also, each forming plate 1411 may be connected to the frame so that it can be replaced independently one by one.

[0027] During the levee plastering operation, the slope shaping unit 141 rotates in the rotational direction R around a rotation axis 140c that extends horizontally from the levee plastering machine 100, i.e., perpendicular to the levee. The working surfaces 1411c of each shaping plate 1411 constituting the slope shaping unit 141 are curved surfaces that gently protrude toward the levee. The working surfaces 1411c are pressed against the levee while rotating in the rotational direction R, compacting the soil on the slope of the levee. In this way, the levee is shaped by applying the rotated slope shaping unit 141 to the old levee on which soil supplied from the pre-processing unit 150 has been piled.

[0028] (1-2-2. Configuration of the upper molded section 143) The upper molding section 143 has a cylindrical shape that extends in directions perpendicular to the direction of travel D1 of the work machine. The upper molding section 143 is attached to the top of the slope molding section 141 via a mounting base (not shown).

[0029] As shown in Figure 7, in this embodiment, an upper surface step portion 1431 is formed on the outer peripheral surface 143a of the upper surface molding portion 143, extending from the end closer to the slope molding portion 141 (also called the "first end portion 143e1") to the opposite end (also called the "second end portion 143e2"). The end of the ridge shoulder molding portion 145 on the upper surface molding portion 143 side is provided to cover the end of the upper surface molding portion 143 on the slope molding portion 141 side. Therefore, the first end portion 143e1 may be the end on the slope molding portion 141 side, or it may be the boundary portion with the ridge shoulder molding portion 145. Multiple upper surface step portions 1431 are provided along the rotational direction (circumferential direction) of the upper surface molding portion 143 (eight in this embodiment).

[0030] In this embodiment, as shown in Figure 6, the distance from the rotation axis 140c of the upper molding section 143 (ridged section 140) to the outer peripheral surface 143a gradually increases between the upper step sections 1431 adjacent to the rotation direction R of the upper molding section 143, as you move from the downstream side (front) to the upstream side (rear) of the rotation direction R of the upper molding section 143 (ridged section 140). Specifically, as shown in Figure 6, between the upper step sections 1431 adjacent to the rotation direction R of the upper molding section 143, the distance L143a2 from the rotation axis 140c on the upstream side (rear) of the rotation direction R to the outer peripheral surface 143a is larger than the distance L143a1 from the rotation axis 140c on the downstream side (front) of the rotation direction R. As a result, during ridge formation, varying degrees of pressure (pressure) is applied to the coated surface of the ridge from the upper surface forming section 143, enabling the formation of a firm ridge surface.

[0031] In this embodiment, the upper stepped portion 1431 is constructed in steps by connecting a plurality of linear stepped portions. In this embodiment, it includes a first portion 1431a, which is five linear stepped portions substantially parallel to the rotation axis 140c, and a second portion 1431b, which is four stepped portions that connect adjacent first portions 1431a and are inclined with respect to the rotation axis 140c. In this embodiment, the four second portions 1431b are formed parallel to each other, and the second portions 1431b of the plurality of upper stepped portions 1431 are also parallel to each other. As shown in Figure 7, the starting point 1431s on the first end portion 143e1 side is located downstream (forward) in the rotation direction R than the ending point 1431f of the second end portion 143e2. Therefore, each of the multiple first parts 1431a is sequentially shifted from the downstream side (front) to the upstream side (rear) in the rotational direction R, from the starting point 1431s of the first end 143e1 to the ending point 1431f of the second end 143e2. As a result, the upper step portion 1431 is formed in a downward step shape from the starting point 1431s to the ending point 1431f. However, the upper step portion 1431 is not limited to this, and may be formed in a step shape (upward step shape) in the opposite direction from the starting point 1431s to the ending point 1431f.

[0032] In this embodiment, the length from the starting point 1431s on the first end 143e1 side to the ending point 1431f on the second end 143e2 side of the upper stepped portion 1431 is longer than the length L1 of the straight line connecting the starting point 1431s and the ending point 1431f. As a result, when forming the upper surface of the ridge, the length of the edge (working end) formed by the upper stepped portion 1431 becomes longer than L1, increasing the area in contact (acting) between the upper forming portion 143 (upper stepped portion 1431) and the ground (applied surface of the ridge), thereby increasing the impact on the soil (applied surface). As a result, a stronger ridge surface can be formed. Furthermore, the shape of the upper step portion 1431 is not limited to the above, as long as the length of the edge (working end) formed by the upper step portion 1431, that is, the sum of the lengths of the linear step portions (first portion 1431a and second portion 1431b) included in the upper step portion 1431 is longer than L1. For example, as in this embodiment, it is not necessary to provide a step (first portion 1431a) parallel to the rotation axis 140c in the upper step portion 1431, and it is also possible to configure all of the linear edges (step portions) included in the upper step portion 1431 (first portion 1431a and second portion 1431b) to be inclined with respect to the rotation axis 140c. In this case, in a plan view or a rear view, the linear edges may be configured to be inclined downwards from the downstream side to the upstream side in the rotation direction R with respect to the rotation axis 140c, or to be configured to be inclined upwards from the upstream side to the downstream side in the rotation direction R.

[0033] Furthermore, the angle of each linear edge (step) constituting one upper surface step portion 1431 with respect to the rotation axis 140c can also be set arbitrarily. In this case, it is possible to make the angles of each linear edge with respect to the rotation axis 140c all different, or, as in this embodiment, it is possible to make at least a part of the angle of each linear edge with respect to the rotation axis 140c the same as the angle of the other edges with respect to the rotation axis 140c.

[0034] Furthermore, in the straight edges that constitute the upper step portion 1431, it is preferable that the angle between adjacent edges (the smaller of the two angles), in this embodiment, the angle between the first portion 1431a and the second portion 1431b, be obtuse. By making the angle between adjacent straight edges obtuse, it is possible to prevent soil from accumulating at the corner where adjacent straight edges intersect.

[0035] Furthermore, when viewed from the axial direction of the rotation axis 140c, the upper stepped portion 1431 is formed with an inclination such that the distance from the rotation axis 140c to the outer peripheral surface 143a gradually increases from the upstream side to the downstream side in the rotation direction R. That is, the angle between the inclination from the highest to the lowest part of the upper stepped portion 1431 and the (smaller) angle between the outer peripheral surface 143a of the upper molded portion 143 is formed as an obtuse angle. In this embodiment, as shown in Figure 6, the inclination is such that the distance from the rotation axis 140c to the outer peripheral surface 143a gradually increases from the upstream side to the downstream side in the rotation direction R, but it is also possible to configure it so that the distance from the rotation axis 140c to the outer peripheral surface 143a gradually increases from the downstream side to the upstream side in the rotation direction R.

[0036] Furthermore, in this embodiment, each of the multiple upper surface stepped portions 1431 formed on the upper surface molded portion 143 has the same spacing and shape. As a result, the upper surface stepped portions 1431 are formed in a spiral shape on the upper surface molded portion 143. This prevents all ends (edges (working ends)) of the upper surface stepped portions 1431 from contacting the upper surface of the ridge at the same time, thereby mitigating vertical vibrations and stabilizing the shape of the ridge. In this case, of the upper step portions 1431 adjacent to the upper surface molding portion 143 in the circumferential direction, the endpoint 1431-1f of the upper step portion 1431-1 located downstream (forward) in the rotation direction R is located downstream (front) of the upper step portion 1431-2 located upstream (rear) in the rotation direction R of the said upper step portion 1431-1, while the starting point 1431-2s of the upper step portion 1431-2 is located downstream (front) in the rotation direction R. In other words, when viewed from the axial direction of the rotation axis 140c, the upper step portions 1431 adjacent to each other in the circumferential direction are configured to overlap. As a result, for example, when the endpoint 1431-1f of the upper step portion 1431-1 provided on the downstream side in the rotation direction R comes into contact with the upper surface of the ridge, the upper step portion 1431-2 adjacent to it on the upstream side also comes into contact with the upper surface of the ridge, so that at least one upper step portion 1431 comes into contact with the upper surface of the ridge during ridge plastering work. Note that the lengths of each of the first portions 1431a of the upper step portion 1431 may be the same or different.

[0037] (1-2-3. Structure of the ridge shoulder forming section 145) As shown in Figure 4, the ridge shoulder forming section 145 is provided in an annular shape so as to cover a part of the slope forming section 141 (the end on the side of the upper forming section 143) and a part of the upper forming section 143 (the end on the side of the slope forming section 141). The ridge shoulder forming section 145 includes the ridge shoulder outer circumferential surface 1451 and the ridge shoulder step portion 1453.

[0038] The ridge shoulder step portion 1453 is provided corresponding to the respective slope step portion 1413 and upper step portion 1431. Specifically, the ridge shoulder step portion 1453 is provided upstream (rear) in the rotational direction R compared to the slope step portion 1413 and upper step portion 1431. The ridge shoulder step portion 1453 has a downstream end portion 1453a provided on the downstream side (front) and an upstream end portion 1453b provided on the upstream side (rear).

[0039] In this embodiment, the ridge shoulder step portion 1453 is provided in a straight line. Furthermore, the ridge shoulder step portion 1453 is provided parallel to the slope step portion 1413. In this case, as shown in Figure 6, when viewed from the axial direction of the rotation axis 140c, the center of the rotation axis 140c is not located on the extension line L1413 of the slope step portion 1413 (more specifically, the extension line L1411b of the upper end (upstream end 1411b) of the slope step portion 1413) and the extension line L1453 of the ridge shoulder step portion 1453 (more specifically, the extension line L1453a of the upper end (downstream end 1453a) of the ridge shoulder step portion 1453). With the above configuration, the slope step portion 1413 and the ridge shoulder step portion 1453 can gradually come into contact with the ridge when the ridge body 140 rotates. This makes it possible to suppress vibrations of the ridge-forming body 140 during ridge formation, and also reduces the kicking of soil backward, thereby improving the finished condition of the ridge.

[0040] As shown in Figure 7, a projection 1455 is provided on a part of the outer circumferential surface 1451 of the ridge shoulder forming section 145, which protrudes near the slope step section 1413. The projection 1455 extends until it contacts the forming plate 1411. This prevents the end of the upstream end 1411b of the forming plate on the ridge shoulder forming section 145 side from eroding the ridge.

[0041] Furthermore, in this embodiment, the height H1411b (distance from the upstream end 1411b to the rotation axis 140c) of the working end of the slope shaping section 141, i.e., the upper end of the slope step section 1413 (the upstream end 1411b of the shaping plate 1411), and the height H1451e1 (distance from the end 145e1 on the slope shaping section 141 side to the rotation axis 140c) of the ridge shoulder shaping section 145 are aligned. This suppresses the kicking of soil backward at the joint between the slope shaping section 141 and the ridge shoulder shaping section 145. As a result, the finished state of the ridge can be improved. Similarly, the height of the upper step portion 1431 and the end portion 145e2 of the ridge shoulder forming portion 145 on the upper forming portion 143 side (distance from the rotation axis 140c of the ridge body 140) are aligned. This suppresses the kicking of soil backward at the joint between the upper forming portion 143 and the ridge shoulder forming portion 145. As a result, the finished state of the ridge can be improved.

[0042] (1-2-4. Composition of the ridged body 140 in the working state) Figure 8 is a top view showing the ridge-forming machine 100 in operation according to the first embodiment of the present invention. Figure 9 is a front view showing the ridge-forming body 140 in operation according to the first embodiment of the present invention. Figure 10 is a side view showing the ridge-forming body 140 in operation according to the first embodiment of the present invention.

[0043] As shown in Figures 8 to 10, the upper step portion 1431 of the upper surface molding section 143 has a spiral shape in appearance, which allows the soil SO discharged from the pre-processing section 150 in front of the upper surface molding section 143 to flow to the right in the direction of travel D1. This allows the soil SO discharged onto the upper surface of the ridge at the pre-processing section 150 to be used for shaping the ridge surface without falling towards the slope. Furthermore, by allowing the excess soil SO during ridge formation to flow to the right in the direction of travel D1, the ridge surface can be shaped while maintaining an appropriate amount of soil.

[0044] Furthermore, the distance from the rotation axis 140c of the upper surface molding section 143 (ridge body 140) to the outer peripheral surface 143a increases between the upper surface stepped sections 1431 adjacent to the rotation direction R of the upper surface molding section 143, as the upper surface molding section 143 (ridge body 140) moves from the downstream side (front) to the upstream side (rear). This applies stimulation to the coating surface of the ridge top during ridge formation, enabling the formation of a firm ridge top surface.

[0045] Furthermore, in this embodiment, the length from the starting point 1431s on the first end 143e1 side to the ending point 1431f on the second end 143e2 side of the upper stepped portion 1431 is longer than the length L1 of the straight line connecting the starting point 1431s and the ending point 1431f. As a result, when forming the upper surface of the ridge, the area in contact (acting upon) of the upper forming portion 143 (upper stepped portion 1431) with the ground (the coated surface of the ridge) increases, and the stimulation to the soil (coated surface) increases. As a result, a stronger ridge surface can be formed.

[0046] Furthermore, in this embodiment, since the ridge shoulder forming section 145 has a ridge shoulder step section 1453, it is possible to stimulate the soil (coated surface) of the ridge shoulder section when compacting the ridge shoulder section compared to when there is no step.

[0047] Furthermore, in this embodiment, when viewed from the axial direction of the rotation axis 140c, the center of the rotation axis 140c is not located on the extension line L1413 of the slope step portion 1413 or the extension line L1453 of the ridge shoulder step portion 1453. Therefore, when the ridge shaping body 140 rotates, the slope step portion 1413 and the ridge shoulder step portion 1453 gradually come into contact with the ridge. This suppresses vibration of the ridge shaping body 140 during ridge formation. Consequently, by using this embodiment, soil kicking can be suppressed and the finished state of the ridge can be improved.

[0048] Furthermore, the height H1411b (distance from the upstream end 1411b to the rotation axis 140c) of the working end (upstream end 1411b) of the slope shaping section 141, i.e., the top of the slope step section 1413, is the same as the height H1451e1 (distance from the first end 1451e1 to the rotation axis 140c) of the ridge shoulder shaping section 145. This suppresses soil kicking at the joint between the slope shaping section 141 and the ridge shoulder shaping section 145, thereby improving the finished condition of the ridge.

[0049] (modified version) A ridge-forming body different from the ridge-forming body shown in the first embodiment will be described. Specifically, examples with different configurations of the upper surface forming section and the ridge shoulder forming section will be described.

[0050] (Variation 1) Figure 11 is a perspective view of the ridged body 140A in modified example 1. As shown in Figure 11, the upper molding section 143A is configured to be separable and has a first upper molding section 143A-1 and a second upper molding section 143A-2. The first upper molding section 143A-1 has an upper step section 143A-11 similar to the upper step section 1431 shown in the first embodiment described above, and the second upper molding section 143A-2 also has an upper step section 143A-21 similar to the upper step section 1431 shown in the first embodiment described above. In the upper molding section 143A, the upper step section 143A-11 of the first upper molding section 143A-1 and the upper step section 143A-21 of the second upper molding section 143A-2 may be formed in the same pattern or may be different. The first upper molding section 143A-1 is attached to the top of the slope molding section 141 via a mounting base (not shown), similar to the first embodiment described above, and the second upper molding section 143A-2 is connected to the side of the first upper molding section 143A-1 that is not close to the slope molding section 141 by bolts or the like.

[0051] In this modified example 1, as shown in Figure 11, in the first upper surface molding section 143A-1, the starting point 143A-11s on the first end 143A-1e1 side of the upper surface step section 143A-11, which is closer to the slope molding section 141, is located downstream (forward) in the rotational direction R than the ending point 143A-11f on the opposite second end 143A-1e2 side. In the second upper surface molding section 143A-2, the starting point 143A-21s on the first end 143A-2e1 side of the upper surface step section 143A-21, which is closer to the slope molding section 141, is located downstream (forward) in the rotational direction R than the ending point 143A-21f on the opposite second end 143A-2e2 side.

[0052] Furthermore, in this modified example 1, the first upper molding section 143A-1 and the second upper molding section 143A-2 are connected. In this case, the upper step portion 143A-11 formed on the first upper molding section 143A-1 and the upper step portion 143A-21 formed on the second upper molding section 143A-2 are provided in a continuous manner. Specifically, the endpoint 143A-11f of the upper step portion 143A-11 formed on the first upper molding section 143A-1 and the starting point 143A-21s of the upper step portion 143A-21 formed on the second upper molding section 143A-2 coincide.

[0053] (Modification 2) Figure 12 is a perspective view of the ridged body 140B in modified example 2. As shown in Figure 12, the upper surface molding section 143B is configured to be separable, similar to the upper surface molding section 143A in modified example 1, and has a first upper surface molding section 143B-1 and a second upper surface molding section 143B-2. The first upper surface molding section 143B-1 is attached to the top of the slope molding section 141 via a mounting base (not shown), similar to the first upper surface molding section 143A-1 shown in modified example 1. The second upper surface molding section 143B-2 is also connected to the side of the first upper surface molding section 143B-1 that is not close to the slope molding section 141 by bolts or the like, similar to the second upper surface molding section 143A-2 shown in modified example 1. Furthermore, the first upper molding section 143B-1 has an upper step section 143B-11 similar to the upper step section 143A-11 shown in the aforementioned modified example, and the second upper molding section 143B-2 also has an upper step section 143A-B21 similar to the upper step section 143A-21 shown in the aforementioned modified example 1. In the first upper molding section 143B-1, the starting point 143B-11s on the first end 143B-1e1 side of the upper step section 143B-11, which is closer to the slope molding section 141, is located downstream (forward) in the rotational direction R than the ending point 143B-11f on the opposite second end 143B-1e2 side. Furthermore, in the second upper surface molding section 143B-2, the starting point 143B-21s on the first end 143B-2e1 side of the upper surface step section 143B-21, which is closer to the slope molding section 141, is located downstream (forward) in the rotational direction R than the ending point 143B-21f on the opposite second end 143B-2e2 side.

[0054] As shown in Figure 12, the upper step portion 143B-11 formed on the first upper surface molding section 143B-1 and the upper step portion 143B-21 formed on the second upper surface molding section 143B-2 may be provided with a phase difference. Specifically, the end point 143B-11f of the upper step portion 143B-11 formed on the first upper surface molding section 143B-1 and the starting point 143B-21s of the upper step portion 143B-21 formed on the second upper surface molding section 143B-2 may be offset in the rotational direction R. As a result, the roller makes contact with the ridge surface at two points in the left-right direction (direction of the rotation axis 140c) relative to the direction of travel D1, and vibrations in the direction perpendicular to the direction of travel D1 are eliminated. Therefore, a more stable ridge surface molding operation can be achieved.

[0055] While Modification 1 and Modification 2 show examples where two upper molding sections are connected, the present invention is not limited to this. Depending on the size of the ridges, three or more upper molding sections may be connected.

[0056] (Variation 3) In the first embodiment of the present invention, an example was shown in which the ridge shoulder step portion 1453 is provided in a straight line, but the present invention is not limited thereto. Figure 13 is a front view of the ridge body 140C in modified example 3. As shown in Figure 13, in the ridge body 140C, the ridge shoulder step portion 1453C may have a non-linear shape. More specifically, the downstream end portion 1453Ca on the downstream side (front) of the ridge shoulder step portion 1453C in the rotational direction R may be provided in a stepped shape. By having a non-linear shape for the ridge shoulder step portion 1453C, the length over which the ridge shoulder forming portion 145 acts when the ridge shoulder portion is compacted can be further increased, and a stronger ridge shoulder can be formed. Note that the downstream end portion 1453Ca of the ridge shoulder step portion 1453C is not limited to a stepped shape, but may be provided in a curved shape (curved), may have multiple inflection points, or may be provided in a jagged shape.

[0057] In the first embodiment of the present invention, an example was shown in which the starting point 143e1s on the first end 143e1 side is located downstream (forward) in the rotational direction R than the ending point 1431f on the second end 143e2 side, but the present invention is not limited thereto. Figure 14 is a perspective view of the ridged body 140D. As shown in Figure 14, in the ridged body 140D, the starting point 1431s on the end side of the upper surface step portion 143D1 of the upper surface forming portion 143D1 that is closer to the slope forming portion 141 may be located upstream (rear) in the rotational direction R than the ending point 1431f on the opposite end side. In this case, the first portion 1431a of the upper surface step portion 143D1 may be formed in a stepped shape so that it is sequentially shifted from the upstream (rear) side to the downstream (forward) side with respect to the rotational direction R from the starting point 1431s of the first end 143e1 to the ending point 1431f of the second end 143e2.

[0058] Furthermore, although the first embodiment of the present invention shows an example in which the upper step portion 1431 has a stepped shape, the present invention is not limited. The upper step portion 1431 may be formed in a curved shape from the starting point 1431s on the first end 143e1 side to the ending point 1431f on the second end 143e2 side. Alternatively, the upper step portion 1431 may be formed in a curved shape having two or more inflection points from the starting point 1431s on the first end 143e1 side to the ending point 1431f on the second end 143e2 side.

[0059] Although the present invention has been described above with reference to the drawings, the present invention is not limited to the embodiments described above, and can be modified as appropriate without departing from the spirit of the invention. For example, any additions, deletions, or design changes made by a person skilled in the art based on each embodiment are also included in the scope of the present invention, as long as they retain the gist of the invention. Furthermore, the embodiments described above can be combined as appropriate, as long as they do not contradict each other, and technical matters common to each embodiment are included in each embodiment even if not explicitly described.

[0060] Furthermore, any effects or benefits other than those brought about by the embodiments described above, if they are clear from the description herein or easily predictable to a person skilled in the art, are naturally considered to be brought about by the present invention. [Explanation of symbols]

[0061] 100... Ridge plastering machine, 110... Mounting section, 111... Lower link connection section, 112... Top link connection section, 113... Hitch frame, 114... Input shaft, 120... Power transmission section, 130... Offset mechanism section, 131... First link arm, 132... Second link arm, 133... Third link arm, 140... Ridge shaping body, 140A... Ridge shaping body, 140B... Ridge shaping body, 140c... Rotating shaft, 140C... Ridge shaping body ,140D···ridged section,141···slope forming section,141a···forming plate,143···top forming section,143a···outer surface,143A···top forming section,143A-1···first top forming section,143A-11···top step section,143A-11f···end point,143A-2···second top forming section,143A-21···top step section,143A-21s···start point,143B-1···first top forming section,143B-11···top step section,143 B-11f...End point, 143B-2...Second upper surface molding section, 143B-21...Upper surface step section, 143B-21s...Start point, 143e1...First end point, 1431s...Start point, 143e2...Second end point, 1431f...End point, 145...Ridge shoulder molding section, 145e1...End point, 150...Pre-processing section, 151...Claw, 160...Top surface processing section, 161...Claw, 1411...Molding plate, 1411-1...Molding plate, 1411-2... Molded plate, 1411a...downstream end, 1411b...upstream end, 1411c...working surface, 1413...slope step section, 1431...top step section, 1431-1...top step section, 1431-1f...end point, 1431-2...top step section, 1431-2s...start point, 1431a...first part, 1431b...second part, 1451...outer surface of ridge shoulder, 1453...ridge shoulder step section, 1453C...ridge shoulder step section, 1455...protrusion

Claims

1. A ridge-forming machine having a ridge-shaping body connected to a traveling machine body and rotating around a rotation axis to form ridges, The aforementioned ridged body is A slope forming section having a slope step and shaping the slope of the ridge, A ridge shoulder forming section that forms the shoulder of the ridge, It comprises an upper surface forming section for shaping the upper surface of the ridge, A ridge shoulder step is provided on the outer circumferential surface of the ridge shoulder forming section. A ridge-forming machine in which, when viewed from the axial direction of the rotation axis, the center of the rotation axis is not located on the extension line of the slope step portion and the ridge shoulder step portion.

2. The aforementioned ridge shoulder step portion is provided parallel to the aforementioned slope step portion, The ridge-forming machine according to claim 1.

3. The ridge-forming machine according to claim 1, wherein the ridge shoulder step portion is formed in a non-linear shape.

4. A ridge-forming machine that forms ridges while rotating around a rotation axis, A slope forming section having a slope step and forming the slope of the ridge, A ridge shoulder forming section that forms the shoulder of the ridge, It comprises an upper surface forming section for shaping the upper surface of the ridge, A ridge shoulder step is provided on the outer circumferential surface of the ridge shoulder forming section. A ridged body in which, when viewed from the axial direction of the rotation axis, the center of the rotation axis is not located on the extension line of the slope step portion and the ridge shoulder step portion.

Images