Patch forming machine

Abstract

This invention provides a ridge-forming machine that can properly form ridges up to the end of the old ridge, even in the presence of foreign matter. [Solution] A ridge forming machine A is characterized by comprising: an embankment section 4 that supplies soil excavated from the original ridge back to the original ridge using an excavation rotor 43a positioned at the tip of a transmission case 162 that is mounted on the machine frame 3 so as to be vertically rotatable; a forming section 5 located behind the embankment section 4 in the direction of travel, which presses the soil supplied from the embankment section onto the original ridge while rotating to form a new ridge; a lifting link mechanism 6 that allows the excavation rotor 43a to move up and down relative to the forming section 5 in the embankment section 4; and an input shaft 13 that supplies power to the embankment section 4 in the machine frame 3, wherein the embankment section 4 is configured to be rotatable relative to the forming section 5 independently of the operation of the lifting link mechanism 6, and is rotatable above the upper surface of the original ridge by the operation of the lifting link mechanism 6, and the input shaft 13 is located behind the pivot point of the transmission case 162.

Description

Technical Field

[0001] The present invention relates to an agricultural working machine. More specifically, it relates to a ridge former.

Background Art

[0002] A farm field is sometimes surrounded by ridges formed by heaping up soil around the perimeter thereof. In many cases, ridges are often formed in a rectangular shape or a polygonal shape. That is, a ridge has a plurality of straight portions and corner portions connecting the straight segments to each other. As means for forming such a ridge, for example, Patent Document 1 is disclosed. The configuration of Patent Document 1 comprises: a rotatable ridge-coating body that coats mud on the top surface and side surface of an old ridge on a machine frame; a mud supply rotary that cuts the old ridge in front of the ridge-coating body and supplies cut soil to the ridge-coating body; and a drive means that rotationally drives the ridge-coating body and the mud supply rotary, so as to form a ridge. Patent Document 2 discloses that the pretreatment section, which is the mud supply rotary in Patent Document 1, can be lifted and lowered relatively with respect to the ridge trimming section, which is the ridge-coating body in said document, and the pretreatment section can be lifted from a position below the upper part of the old ridge to a position higher than the upper part of the old ridge in a side view.

Prior Art Literature

Patent Literature

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problem to be Solved by the Invention

[0004] When forming ridges using the apparatus described in Patent Document 1, if the mud-supplying rotary reaches the end of one side as it progresses, it cannot proceed any further. As a result, after the mud-supplying rotary has excavated, the ridge-forming body cannot perform the work, and there is a problem in that the ridge cannot be formed at the end of the ridge, leaving excavation marks. In Patent Document 2, the pre-processing unit can be raised and lowered above the upper surface of the old ridge, making it possible to raise it above the upper part of the old ridge at the end of the ridge. Therefore, unlike Patent Document 1, it is possible to form the old ridge at the end of the ridge during work with the ridge-shaping unit without interfering with the ridges on other adjacent sides of the ridge.

[0005] Incidentally, the surface and interior of the ridge may contain relatively hard foreign objects such as stones, relative to the soil. Therefore, when performing work using the structure described in Patent Document 2, if the rotating shaft of the pre-processing unit collides with a foreign object, the ridge-shaping unit will oscillate up and down. At the same time, the ridge-shaping unit located at the rear also oscillates integrally with the ridge-shaping unit, causing the upper surface of the formed ridge to undulate up and down, which may prevent the formation of a proper ridge. This invention was made in view of the above-mentioned problems, and aims to provide a ridge-forming machine that can properly form ridges up to the end of the old ridge even in the presence of foreign matter. [Means for solving the problem]

[0006] This invention is The embankment section, which supplies soil excavated from the original ridge back to the original ridge using an excavation rotor positioned at the tip of a transmission case that is mounted on the machine frame so as to be able to rotate up and down, A forming unit located behind the embankment in the direction of travel, which presses soil supplied from the embankment onto the original ridge while rotating to form a new ridge, The embankment section includes a lifting link mechanism that allows the excavation rotor to move up and down relative to the molding section, The aforementioned machine frame is equipped with an input shaft for supplying power to the embankment section, The embankment section is configured to be rotatable relative to the molding section independently of the operation of the lifting link mechanism, and is rotatable above the upper surface of the original ridge by the operation of the lifting link mechanism, and the input shaft is located behind the pivot point of the transmission case. A ridge forming machine characterized by the following: It relates to.

[0007] This invention further, A part of the lifting link mechanism is located below the input shaft. A ridge forming machine characterized by the following: It relates to.

[0008] This invention further, The aforementioned lifting link mechanism includes a first link rotatably connected to the machine frame, A second link rotatably connects the aforementioned aircraft frame and the first link and is extendable and retractable in the longitudinal direction, The device comprises a third link connected to the first link by a connecting portion that allows it to rotate and slide, and the elastic member being fitted into at least one side of the connecting portion, The third link is located below the input shaft. A ridge forming machine characterized by the following: It relates to.

[0009] This invention further, When the embankment section is rotated to a position above the upper surface of the original ridge, the rotation axis of the excavation rotor is located above the rotation axis of the molding section. A ridge forming machine characterized by the following: It relates to.

[0010] This invention further, When the embankment is rotated above the upper surface of the original ridge, the rotation axis of the excavation rotor is such that the first link is located above the support axis relative to the machine frame. A ridge forming machine characterized by the following: It relates to.

[0011] This invention further, Said lifting link mechanism comprises an elastic member that allows rotation of said embankment portion and biases the embankment portion in a direction opposite to the rotation direction, A ridge forming machine comprising: relating to. [Effect of the Invention]

[0012] The present invention can provide a ridge forming machine capable of properly forming a ridge up to the end of an old ridge even when foreign matter is present. [Brief Description of Drawings]

[0013] [Figure 1] It is a top view of the ridge forming machine according to an embodiment of the present invention. In the forward working state, the height of the embankment portion is at the reference position. [Figure 2] It is a side view of the ridge forming machine according to an embodiment of the present invention, showing a state where the embankment portion is at the reference position during forward operation, as viewed from the left side with respect to the traveling direction. [Figure 3] It is a side view of the ridge forming machine according to an embodiment of the present invention, showing a state where the embankment portion is at the reference position during forward operation, as viewed from the right side with respect to the traveling direction. [Figure 4] It is a top view of the ridge forming machine according to an embodiment of the present invention. In the reverse working state, the height of the embankment portion is at the reference position. [Figure 5] It is a side view of the ridge forming machine according to an embodiment of the present invention, and is an enlarged view of the working portion during forward operation or reverse operation, which is at a reference position serving as a working standard. [Figure 6] It is a side view of the ridge forming machine according to an embodiment of the present invention, and is an enlarged view of the working portion during forward operation or reverse operation, in which the embankment portion is at the highest position. [Figure 7] It is a side view of the ridge forming machine according to an embodiment of the present invention, and is an enlarged view of the working portion during forward operation or reverse operation, in which the embankment portion is at the lowest position. [Figure 8] It is a side view of the ridge forming machine according to an embodiment of the present invention, which is a view illustrating a protective cover, and the protective cover is at the reference position. [Figure 9] It is a front view of the ridge forming machine according to an embodiment of the present invention, which is a view illustrating a protective cover, and the protective cover is at the reference position. [Figure 10] This is a side view of a ridge-forming machine according to an embodiment of the present invention. It is a diagram illustrating the protective cover, shown in its highest position. [Figure 11] This is a side view of a ridge-forming machine according to an embodiment of the present invention. It is a diagram illustrating the protective cover, which is in its lowest position. [Figure 12] This is a side view of a ridge-forming machine according to an embodiment of this invention. This is a rear cover view seen from the right side in the direction of travel. The embankment section is the reference position. [Figure 13] This is a front view of a ridge-forming machine according to an embodiment of the present invention. This diagram illustrates the rear cover when the embankment section is in its standard position. However, the embankment transmission section is partially omitted from the illustration. The embankment section cover is also omitted from the illustration. [Figure 14] This is a plan view of a ridge-forming machine according to an embodiment of this invention. This is a rear cover view taken from above along the main guide surface. [Figure 15] This is a side view of a ridge-forming machine according to an embodiment of the present invention. It is the rear cover as seen from the right side in the direction of travel. The embankment section is at its lowest position. [Figure 16] This is a side view of a ridge-forming machine according to an embodiment of the present invention. It shows the rear cover as viewed from the right side in the direction of travel. The embankment section is in the raised position, and the rear cover is rotated to the rear due to an external force. [Modes for carrying out the invention]

[0014] Embodiments of this invention will be described with reference to the drawings. The figure shows a ridge-forming machine A, which is an embodiment of the present invention. In this explanation, the left side of Figure 1 will be considered the front in the direction of work forward, the right side the rear in the direction of work forward, the top the right relative to the direction of work forward, and the bottom the left relative to the direction of work backward.

[0015] A is a ridge-forming machine. Ridge-forming machine A has a machine frame 1, an offset frame 21 that can rotate horizontally relative to the machine frame 1, and a working section W that can rotate horizontally relative to the offset frame 21 by an actuator 24B for rotating the working section. The working section W forms a new ridge while adjusting to the appropriate position relative to the original ridge.

[0016] At the front of the machine frame 1, there is a mounting section 10 for attaching the rib-forming machine A to the three-point linkage mechanism of the traveling machine. The rib-forming machine A is attached to the three-point linkage mechanism at the rear of the traveling machine via the mounting section 10 and used. The mounting section 10 has a top bracket 101 that protrudes forward and upward from the center of the machine frame 1, and a top link pin 102 is provided at the front end of the upper part of this top bracket 101. Similarly, lower brackets 103 protrude from the machine frame 1 to the left and right, facing each other, and lower link pins 104, 104 are attached to the front ends of each of these lower brackets 103. The rib-forming machine A is connected to and attached to the three-point linkage mechanism of the traveling machine by these top link pins 102 and lower link pins 104.

[0017] The rotating frame section 2 will now be described. The ridge-forming machine A shown in Figure 1 is mounted on a three-point linkage mechanism (not shown) on a traveling machine body and forms ridges in fields as the traveling machine, such as a tractor, moves. The ridge-forming machine A consists of a machine frame 1 on the traveling machine body side, a rotating frame section 2 attached to the machine frame 1 so as to be rotatable horizontally at one end, and a working section W attached to the other end of the rotating frame section 2 so as to be rotatable. The working section W can be positioned offset to the left or right from the center of the machine frame 1 by the rotating frame section 2.

[0018] At the front of the working unit W in the direction of travel during operation, there is an embankment section 4 that excavates soil from the field surface and a portion of the original ridge and piles it up on the sides and top of the original ridge. Located at the rear of the working unit W in the direction of travel during operation, there is a molding disc body 51 that is rotated by a horizontal rotating shaft perpendicular to the direction of travel, compacts the embankment piled up by the embankment section 4, and forms a new ridge on the original ridge.

[0019] In this embodiment, when the rotating frame 2 is swung to the right in the forward direction of the traveling machine to position the working unit W to the right, the ridges of the fields can be formed as the traveling machine moves forward. Conversely, when the rotating frame 2 is rotated to position the working unit W to the left, the ridges of the fields can be formed as the traveling machine moves backward. The rotating frame section 2 is composed of an offset frame 21 that is rotatably attached to the rear of the machine frame 1. The offset frame 21 can be driven to rotate left and right in relation to the direction of travel by a driving means, which is an offset frame actuator 24A. The driving means is a cylinder that can be extended and retracted, and in the embodiment described, it is a cylinder that can extend and retract a piston rod by hydraulic pressure generated within the driving means using electricity as a power source. The driving mechanism can be either an electrically powered cylinder or a cylinder that uses hydraulic pressure generated at another location and sent through piping to extend and retract the piston rod, as long as it effectively rotates the rotating frame section 2.

[0020] The work unit W is positioned on one side of the traveling machine and enables forward operation, where the traveling machine, consisting of a tractor or the like, moves forward to form a ridge, and reverse operation, where the offset frame 21 and the work unit W are positioned on the other side of the traveling machine and the traveling machine moves backward to form a ridge. In this embodiment, the forward operation state has the work unit W protruding to the right side of the forward side of the traveling machine. When describing the machine configuration below, unless otherwise specified, the ridge forming machine A in the forward operation state will be described. The reverse operation state will be described as needed.

[0021] The machine frame 1 will now be described. The machine frame 1 has a mounting section 10 at its front that can be connected to a lifting device (not shown), such as a three-point linkage mechanism, of the traveling machine body (not shown), and is configured to allow the ridge-forming machine A to be attached and detached.

[0022] 13 is the input shaft. The machine frame 1 is equipped with an input shaft 13 that obtains power from the traveling machine body and supplies power to the work unit W. The mounting section 10 and the traveling machine body may be connected via a coupling device such as a quick coupler. In this embodiment, the mounting section 10 is connected to the traveling machine body by a top link pin 102 located at the top and lower link pins 104, 104 located on the left and right sides below. In addition, an input shaft 13 capable of obtaining rotational power from the traveling machine body via a drive shaft (not shown) or the like is provided at the front of the machine frame 1, protruding forward parallel to the direction of travel. The rib forming machine A obtains power from the traveling machine body via the input shaft 13.

[0023] 21 is an offset frame. The offset frame 21 is a long member, and its front end, which is one end in the longitudinal direction, is connected to the rear of the machine frame 1, which is the rear of the mounting part 10, so as to be able to rotate horizontally. The other end of the offset frame 21, the rear end, is movable to both the left and right sides of the machine frame 1. The offset frame 21 is connected to an offset frame actuator 24A, which is a cylinder that is a driving means for connecting to the machine frame 1, and the offset frame 21 rotates horizontally as the offset frame actuator 24A expands and contracts. The pivot point on the front end of the offset frame 21 is in the same left-right position as the top link pin 102 with respect to the direction of travel in a plan view, but it may be in a position that is offset in the left-right direction.

[0024] Let me explain the work area W. The work unit W is rotatably connected to the rear end of the offset frame 21. The work unit W comprises a machine frame 3 which forms the basic framework, an embankment section 4 located in front of the machine frame 3 and having an excavation rotor 43a that protrudes laterally from the machine frame 3, and a molding section 5 located in rear of the machine frame 3 and having a molded disc body 51 that protrudes laterally from the machine frame 3.

[0025] The aircraft frame 3 includes a long base frame 30 that is rotatably connected to the rear end of the offset frame 21, and a roughly triangular plate-shaped transmission frame 163 that is fixed to the other end of the base frame 30 in the longitudinal direction so as to be suspended downward, and the aircraft frame 3 is rotatable relative to the offset frame 21.

[0026] An actuator 24B for rotating the work section, consisting of a cylinder connected to the offset frame 21, is connected to the base frame 30 via a rotating link mechanism 34 that connects the offset frame 21 and the machine frame 3. As the actuator 24B for rotating the work section extends and retracts, it rotates the machine frame 3 horizontally from one side to the other side of the offset frame 21. 34 is a rotating link mechanism. The rotating link mechanism 34 is a link mechanism in which multiple link members connect the offset frame 21 and the machine frame 3 to each other, and can bend in accordance with the rotation of the machine frame 3. By bending in response to the extension and retraction movement of the working section rotation actuator 24B, the base frame 30 can be driven to rotate left and right in the direction of travel relative to the rotating frame section 2.

[0027] The working unit input shaft 14 and the transmission case 162 will be described below. An input shaft 14 for the work section is provided above the transmission frame 163 and below the base frame 30. The input shaft 14 for the work section is positioned in a direction that intersects with the input shaft 13. In this embodiment, the input shaft 14 for the work section is oriented in the left-right direction, which is approximately perpendicular to the input shaft 13 in a plan view. By connecting the work unit input shaft 14 to the input shaft 13 with a universal joint drive shaft 131, the rotational power of the traveling machine can be transmitted to the work unit W. The transmission frame 163 is provided with a transmission case 162 that houses the transmission members, and the rotational power obtained from the work unit input shaft 14 is speed-shifted. This power is output to the embankment rotation shaft 161a located at the bottom of the transmission case 162.

[0028] Let me explain the embankment section 4. The embankment section 4 supplies soil excavated from the original ridge back to the original ridge using an excavation rotor 43a positioned at the tip of an embankment transmission unit 161 that is mounted on the machine frame 3 so as to be vertically rotatable. The embankment transmission unit 161 rotates vertically around the embankment section rotation shaft 161a as a pivot point. The embankment section 4 is configured to be rotatable relative to the molding section 5, and can be rotated above the upper surface of the original ridge by the operation of the lifting link mechanism 6, which will be described later. In this embodiment, the lower end of the maximum rotation range R of the excavation rotor 43a constituting the embankment section 4 can move above the upper surface of the original ridge. The working section input shaft 14 is located behind the pivot point of the embankment transmission section 161.

[0029] As shown in Figure 6, when the embankment section 4 is rotated above the upper surface of the original ridge, the rotation axis of the excavation rotor 43a is located above the rotation axis of the molding section 5. Furthermore, the rotation axis of the excavation rotor 43a is located above the first link support shaft 611 of the first link 61, which will be described later and is provided on the machine frame 3. In other words, when the excavation rotor 43a is raised above the upper surface of the original ridge, the first link 61 is pushed down, ensuring ground contact space for the drive shaft 131 and not hindering the transmission of rotational power. The embankment section 4 is located at the front of the machine frame 3 and is provided to be able to rotate vertically relative to the machine frame 3. The embankment section 4 includes an embankment transmission section 161 which serves as the base, an excavation rotor 43a which is an excavation rotor located laterally toward the ridge side from the embankment transmission section 161, and an upper surface treatment rotor 43b. 161a is the embankment rotation axis. The embankment rotation axis 161a rotates the excavation rotor 43a and the top surface treatment rotor 43b.

[0030] The embankment section 4 includes an excavation section 41a, which is a tilling device provided with multiple excavation blades 40, each with a different radius of rotation, arranged radially on a horizontal rotation axis and positioned to protrude from the side of the original ridge; an upper surface treatment section 41b, which is a tilling device provided with multiple excavation blades 40 arranged radially on a horizontal rotation axis and positioned on the upper part of the original ridge; an embankment section cover 42a, which covers the top of the excavation section 41a and guides the soil kicked up by the excavation blades 40 towards the original ridge; and an upper surface treatment cover 42b, which covers the top of the upper surface treatment section 41b and guides the soil towards the original ridge. The embankment section 4, which is a tilling device equipped with an excavating blade 40, is rotated by power from the traveling machine body to excavate the soil on the field surface, a portion of the original levee slope, and the top surface of the original levee. The original levee slope can be excavated in a stepped manner depending on the rotation radius of the excavating blade 40 of the embankment section 4. The excavated soil is thrown onto a molded disc body 51 located on the original levee side and behind the embankment section 4 to form an embankment. The molded disc body 51 will be described later. In this embodiment, the tilling device in the embankment section 4 is provided in two locations. The tilling device consists of an excavation section 41a that excavates the soil on the field surface and the slope of the original ridge, and an upper surface processing section 41b located on the molded disc body 51 side of the excavation section 41a that excavates the soil on the upper surface of the original ridge. Since the excavation rotor 43a rotates up and down with respect to the upper surface processing rotor 43b which is coaxial with the embankment section rotation axis 161a, it can also be said that the excavation section 41a of the embankment section 4 moves up and down with respect to the upper surface processing section 41b.

[0031] 161 is the embankment transmission unit. The embankment transmission unit 161 is an embankment transmission case that transmits power transmitted from the transmission frame 163 to the excavation rotor 43a, and its rear end is attached to the embankment rotation shaft 161a. The embankment transmission unit 161 rotates around the embankment rotation shaft 161a, allowing the front end of the embankment transmission unit 161 to move up and down. The embankment rotation shaft 161a is a drive shaft output from the transmission case 162 of the transmission frame 163, and by making it the pivot point of the embankment transmission case, which is the embankment transmission unit 161, the power transmission and the pivot point are made common, thereby suppressing the complexity of the transmission system and the machine itself. Since the embankment rotation axis 161a is located in front of the work unit input axis 14, the embankment 4 can be positioned towards the front in the direction of travel, and the center of gravity of the ridge forming machine A can be positioned forward. Therefore, it is possible to suppress the center of gravity balance of the traveling machine equipped with the ridge forming machine A from shifting to the rear during ridge forming work, and good weight distribution can be achieved.

[0032] Since the work unit input shaft 14 is located behind the embankment rotation shaft 161a, the input shaft 13 and the work unit input shaft 14 can be positioned as far apart as possible. This allows the drive shaft 131 to be positioned in a way that suppresses its bending angle, thereby reducing the stress load caused by rotation involving bending of the drive shaft 131 and ensuring durability. The embankment transmission unit 161 houses the transmission members inside the embankment transmission case and transmits the rotational power received from the transmission case 162 of the transmission frame 163 to the excavation rotor 43a after changing the speed.

[0033] 43a is an excavation rotor. The excavation rotor 43a has multiple excavation blades 40 arranged on an excavation blade rotation shaft 43c that protrudes laterally from the tip of the embankment transmission unit 161 toward the ridge side. The excavation blade rotation shaft 43c rotates the excavation rotor 43a with rotational power obtained from the embankment transmission unit 161, causing the excavation blades 40 to excavate a part of the original ridge and the base of the original ridge. Furthermore, the excavation rotor 43a throws the excavated soil back toward the original ridge by rotation, and the thrown soil piles up toward the side and top of the original ridge. The excavation height of the embankment 4 can be adjusted by moving the excavation rotor 43a up and down around the embankment rotation shaft 161a as the pivot point.

[0034] The excavation blades 40 of the excavation rotor 43a are arranged in multiple types with differences in length and shape, excavating the side of the original ridge in a stepped manner. By excavating in a stepped manner, if the excavated soil is dumped again, the excavated soil will be reliably piled up in the stepped section, preventing collapse. Furthermore, when the soil is solidified in the molding section 5 described later, it is possible to increase the contact area between the original ridge and the dumped excavated soil, preventing collapse after the new ridge is formed.

[0035] The edges of the stepped section, which forms the excavation track left by the excavation rotor 43a, are not necessarily horizontal or vertical; they may be formed so that the edges are inclined relative to each other. Alternatively, each edge may be formed by combining different lengths. Furthermore, at least one of the edges may be curved, or it may be formed as a stepped section combining curved and straight edges.

[0036] 5 is the molding section. The molding section 5 is located behind the embankment section 4 in the direction of travel, and rotates and presses the soil supplied from the embankment section 4 against the original ridge to form a new ridge. The molding section 5 is located on the rear side of the machine frame 3. That is, the molding section 5 is located on the rear side in the direction of travel of the embankment section 4. The molding section 5 has a molding transmission section 164 and a molding disc body 51.

[0037] 164 is a molding transmission unit. The molding transmission unit 164 is a molding transmission case, which houses the transmission members and transmits the rotational power received from the transmission case 162 of the transmission frame 163 via the embankment rotating shaft 161a to the molded disc body 51 after changing the speed. The molding transmission case 164 is positioned with the embankment rotating shaft 161a at its front end and facing towards the rear. The molding transmission unit 164 is positioned so that approximately the middle part is located below the work unit input shaft 14. As a result, the molding transmission unit 164 is positioned relatively far forward of the work unit input shaft 14, making it possible to shift the center of gravity of the ridge forming machine A towards the traveling machine body during forward operation. Therefore, the mounting balance of the traveling machine body can be maintained in good condition.

[0038] The molded disc body 51 is located at the rear end of the molding transmission case 164 and is provided to protrude from the transmission frame 163 toward the ridge side. The molded disc body 51 consists of an upper roller 52 that molds the upper surface of the ridge and a molded disc 511 that molds the side surface of the ridge.

[0039] The upper roller 52 is made up of a cylindrical roller. In addition, uneven surfaces such as ridges or steps may be formed on the circumference of the upper roller 52. A molded disc body 51 is provided so as to be continuous with the stepped portion of the upper roller 52. The molded disc body 51 is formed in a substantially frustoconical shape with the upper roller 52 side as the apex. In detail, the molded disc 511 is provided in a frustoconical shape with multiple steps by overlapping a plurality of segmented pieces 511a. There are no limitations on the detailed shape of the segmented pieces 511a, and the most suitable shape can be adopted as appropriate. Furthermore, the method and positional relationship of overlapping the segmented pieces 511a can also be adopted in a manner that is as appropriate as appropriate.

[0040] The molded disc body 51 is rotated by rotational power output from the rear end of the molding transmission case 164, via power obtained from the working section input shaft 14, through the embankment section rotation shaft 161a and the molding transmission section 164. The molded disc body 51 is also rotated in conjunction with the excavation rotor 43a of the embankment section 4. The molded disc body 51 rotates faster than the travel speed around a rotation axis perpendicular to the direction of travel. That is, the molded disc body 51 moves while slipping and rotating along the top and sides of the ridge. The molded disc body 51 rubs and presses the excavated soil supplied from the embankment section 4 against the original ridge, forming a new ridge by compacting the excavated soil. Since the weight of the ridge forming machine A itself is added to the rotating molded disc body 51, an even stronger new ridge can be formed.

[0041] Although the explanation has assumed that the central axes of the upper roller 52 and the molded disc body 51 are coaxial with the output shaft 53 that is output from the molding transmission case 164, the explanation is not limited to this, and the central axes of each or one of the upper roller 52 and the molded disc body 51 may be positioned at a location not coaxial with the output shaft 53, thereby causing eccentricity. In this case, the pressure due to eccentricity will be added, further solidifying the new ridges.

[0042] The top surface processing unit 41b will now be described. The work unit W may further include an upper surface processing unit 41b. The upper surface processing unit 41b has an upper surface processing rotor 43b with multiple excavation blades 40 arranged thereon, which excavates the soil on the upper surface of the original ridge and supplies the excavated soil to an upper surface roller 52 located at the rear. In this embodiment, the upper surface processing rotor 43b is coaxial with the embankment rotation axis 161a and is positioned approximately parallel to the central axis of the molded disc body 51, and protrudes from the machine frame 3 so as to be positioned on the upper surface of the ridge. The upper surface treatment section 41b works in cooperation with the embankment section 4 located in front of it to efficiently excavate the sides and top of the original ridge and supply excavated soil to the formation section. In other words, the upper surface treatment section 41b makes it even easier to form a strong new ridge.

[0043] Let me explain the lifting link mechanism 6. The embankment section 4 is equipped with a lifting link mechanism 6 that allows the excavation rotor 43a to move up and down relative to the molding section 5. As shown in Figure 2, a part of the lifting link mechanism 6 is located below the input shaft 13. The drive shaft 131 can be placed in the gap space formed by the lifting link mechanism 6, allowing for an efficient arrangement of the transmission path and enabling the entire device to be made compact. The lifting link mechanism 6 has elastic members (a downward elastic member 632 and an upward elastic member 633) made of metal coil springs that allow the embankment section 4 to rotate and bias it in the opposite direction to the rotation. Furthermore, the embankment section 4 is provided to be rotatable vertically via a lifting link mechanism 6. The lifting link mechanism 6 has a first link 61, a second link 62, a third link 63, and a virtual fourth link 64.

[0044] Let me explain Link 61. The first link 61 is a member with a longitudinal length, and its intermediate portion is positioned to the side of the transmission frame 163 and the molding transmission section 164, and behind the embankment transmission section 161. The intermediate portion of the first link 61 is connected to the transmission frame 163 of the machine frame 3 by a first link support shaft 611, and is supported so as to be rotatable. Since the first link 61 is located below the work section input shaft 14, it is possible to rotate it while avoiding the drive shaft 131 and the input shaft 13.

[0045] Let's explain the second link, 62. The second link 62 rotatably connects the aircraft frame 3 and the front first link 61 and is extendable and retractable in the longitudinal direction. The second link 62 rotatably connects the rear of the base frame 30, located on the upper part of the aircraft frame 3, to the rear end of the first link 61. The second link 62 is composed of an axially expandable and contractible mechanism. In this embodiment, a cylinder is used as the expandable and contractible mechanism. The direct drive source for the cylinder is electricity, fluid pressure, etc., but other types may be used, and the type is not limited. The telescopic mechanism is extendable and retractable in the longitudinal direction of the second link 62, meaning that the second link 62 itself extends and retracts. The telescopic mechanism may also consist of male and female threaded rods instead of a cylinder, and the second link 62 may be extended and retracted by the threaded rods. Alternatively, the second link 62 may be extended and retracted by rotating the threaded rods using rotational power obtained from a motor or the like. By extending or retracting the extension mechanism, which is the second link 62, the front end of the first link 61 rotates up and down around the first link support shaft 611 as a pivot point.

[0046] Let's explain the third link, 63. The third link 63 is connected to the front end of the first link 61 by a rotatable and slidable connecting portion 634, and elastic members (a downward elastic member 632 and an upward elastic member 633) are fitted to at least one side of the connecting portion 634, either above or below. The third link 63 is located below the work unit input shaft 14. The third link 63 is a long, elongated member. In this embodiment, the third link 63 is a long, round or cylindrical member. The upper end of the third link 63 is rotatably connected to the third link support shaft 631, which is fixed to the rear end of the embankment transmission unit 161. The upper end of the third link 63 can be said to be rotatably connected to the embankment unit 4. The intermediate portion of the third link 63 is slidably connected to the first link 61 by a connecting portion 634 provided on the front end side of the first link 61. The connecting portion 634 is a member that is rotatably attached to the front end of the first link 61 and has a hole 637 that allows the third link 63 to slide, supporting the intermediate portion of the third link 63. The connecting portion 634 absorbs the rotation of the first link 61 and the third link 63.

[0047] The downward-pressing elastic member 632 will now be described. The downward-pushing elastic member 632 is provided to be inserted into the upper third link 63, which is sandwiched between the third link support shaft 631 and the connecting portion 634. The downward-pushing elastic member 632 biases the excavation rotor 43a in a downward direction.

[0048] The elastic member 633 for pushing up will now be described. The elastic member 633 for pushing up is positioned between the connecting portion 634 and the lower end of the third link 63. A locking member 635 is provided on the lower end of the third link 63 and is inserted into the third link 63 between the connecting portion 634 and the locking member 635. The elastic member 633 biases the drilling rotor 43a in an upward direction. In this embodiment, the locking member 635 is a nut, which is tightened onto a bolt portion 636 provided on the tip of the third link. The tip of the free end of the third link 63 to which the lifting elastic member 633 is attached is tightened with a bolt 636 to secure the lifting elastic member 633. Tightening the bolt 636 increases the clamping force of the connecting part 634 and the repulsive force of the spring, thereby strengthening the support force for the embankment 4. In this embodiment, the downward elastic member 632 and the upward elastic member 633 are inserted coaxially with the third link 63 using a compression coil spring, but they do not necessarily have to be coaxial, nor do they have to be coil springs. When the locking member 635 (nut) at the tip of the third link 63 is tightened more, the clamping force of the connecting portion 634 by the downward elastic member 632 and the upward elastic member 633 increases, and the repulsive force of the spring increases, thereby strengthening the biasing force on the embankment 4.

[0049] The fourth link 64 will now be described. The fourth link 64 is a virtual link connecting the third link support shaft 631 and the base frame 30 at the top of the second link 62.

[0050] As the embankment section 4 moves up and down, the downward-pressing elastic member 632, which is a coil spring on the fixed side, is compressed and then stretched. Each time, the downward-pressing elastic member 632 expands and contracts, but then tries to return to its original state. When the downward-pressing elastic member 632 stretches, the upward-pressing elastic member 633 contracts, and when the downward-pressing elastic member 632 contracts, the upward-pressing elastic member 633 expands. The upward-pressing elastic member 633, which is a coil spring on the free end side, dampens the expansion and contraction of the downward-pressing elastic member 632.

[0051] Let me explain the balance of rebound. Since the downward elastic member 632 and the upward elastic member 633 are positioned opposite each other with respect to the connecting portion 634, they interact with each other. The vertical position of the drilling rotor 43a is determined when the repulsive forces of the downward elastic member 632 and the upward elastic member 633 are balanced. When the excavation rotor 43a receives an impact from the ridge side being excavated, it shortens either the downward elastic member 632 or the upward elastic member 633 to increase the repulsive force and biases the connecting portion 634 toward the other elastic member. Subsequently, the other elastic body of either the downward elastic member 632 or the upward elastic member 633 receives the connecting portion 634 that has been pushed by the other elastic member. Subsequently, the other elastic body biases the other elastic member, gradually damping it. At this time, the first link 61 and the second link 62 maintain their positions while the third link 63 and the fourth link 64 change their positions relative to the aircraft frame 3 and the molded part 5.

[0052] The machine frame 3 and the molding section 5 remain unchanged in their vertical positions, while only the embankment section 4 moves up and down. In other words, since the vertical position of the molding section 5 does not change, the top surface of the new ridge can be compacted in a straight line without becoming wavy. Furthermore, in response to the impact received by the excavation rotor 43a, the third link 63 slides against the connecting portion 634 provided on the first link 61, causing the embankment 4 to move up and down, which is then damped by the downward-pushing elastic member 632 and the upward-pushing elastic member 633. As a result, after the excavation rotor 43a receives an impact, it returns to the set height again, making it possible to continue the work.

[0053] The damping effect can be changed by altering the spring characteristics, such as the spring constant, of the downward elastic member 632 and / or the upward elastic member 633. The holding characteristics of the embankment 4 can be changed by adjusting the tightening force of the locking member 635. The downward elastic member 632 and the upward elastic member 633 may have different spring characteristics.

[0054] Alternatively, the installation of the upward-pushing elastic member 633 may be omitted, and only the downward-pushing elastic member 632 may be provided. In this case, a locking member 635 is provided directly below the connecting portion 634. When the excavation rotor 43a is subjected to an impact during rotation, the upward-pushing embankment 4 can be supported by the downward-pushing elastic member 632. At this time, the lower part of the third link 63 will be lowered from the connecting portion 634, but when the embankment 4 returns to its original position due to the downward-pushing elastic member 632, the downward position of the embankment 4 can be restricted by the locking member 635. If only the downward-pressing elastic member 632 is used, not only is the buffering-related configuration simplified, but the lowered position of the embankment section 4 can be fixed. For example, when the excavation rotor 43a is not working away from the ridge, the swinging of the embankment section 4 due to its own weight can be suppressed. In other words, the swinging of the embankment section 4 toward the downward side is restricted by the locking member 635.

[0055] The vertical position of embankment section 4 will be explained. The vertical position of the excavation rotor 43a of the embankment section 4 moves up and down relative to the molding section 5 by the extension and contraction of the second link 62. In this embodiment, when the second link 62 is extended, the front end of the first link 61 rises and the excavation rotor 43a lowers. Conversely, when the second link 62 is shortened, the front end of the first link 61 lowers and the excavation rotor 43a rises. The fourth link 64 is a virtual link connecting the third link support shaft 631 and the upper part of the second link 62. Since the third link support shaft 631 also rotates up and down in conjunction with the rotation of the embankment section 4, the length and positional relationship of the line segment of the fourth link 64 changes according to the raising and lowering of the embankment section 4. The lifting link mechanism 6 is provided in such a way that it can maintain the vertical position while allowing the embankment section 4 to swing up and down. Therefore, even if the excavation rotor 43a comes into contact with foreign matter present in the soil during excavation, the impact can be absorbed by the up and down swinging of the excavation rotor 43a. Furthermore, since impact is less likely to be transmitted to the machine frame 3 that supports the embankment section 4, the machine frame 3 can also be protected. Moreover, since impact is less likely to be transmitted to the rotating frame section 2 and machine frame 1 connected to the machine frame 3, impact is less likely to be transmitted to the worker riding in the mobile machine, making it possible to continue working comfortably.

[0056] The rotation axis of the digging rotor 43a can be raised higher than the rotation axis of the molded disc body 51. Specifically, the lower end of the maximum rotation region R of the digging rotor 43a can be raised to a position above the lower end of the maximum rotation region R of the upper rotor of the molded disc body 51. Furthermore, it can be said that the rotation axis of the digging rotor 43a can rotate above the support axis of the first link 61. In other words, because the maximum rotation region R of the digging rotor 43a is located above the upper surface of the original ridge, the digging rotor 43a will not dig into the original ridge that intersects with the original ridge being worked on in front of it.

[0057] The positions of the lifting link mechanism 6 and the work unit input shaft 14 will be described below. The work unit input shaft 14 is located behind the embankment unit rotation shaft 161a in the direction of travel. This arrangement makes it possible to bring the vertically oscillating embankment unit 4 closer to the mounting unit 10. In other words, by bringing the vertically oscillating embankment unit 4 closer to the traveling machine, the oscillating motion of the traveling machine, which is operating with the ridge forming machine A attached, can be suppressed via the machine frame 3, offset frame 21, and machine frame 1. As a result, the suppression of the oscillating motion of the traveling machine stabilizes the vertical position of the forming unit 5, enabling the formation of a proper new ridge. Furthermore, the lifting link mechanism 6 is located behind the embankment unit 4. The rear side of the embankment unit 4 and the side of the forming unit 5 have relatively more space for placement compared to the front of the embankment unit 4, so it is possible to secure oscillating space for shock absorption by the lifting link mechanism 6.

[0058] Furthermore, a third link 63 is positioned below the working unit input shaft 14. The third link 63, the downward elastic member 632, and the upward elastic member 633 are covered from above by the base frame 30 and the drive shaft 131. Therefore, even without providing new covers, the adhesion of foreign matter when it falls from above can be suppressed. Foreign matter is less likely to adhere to the third link 63 and the connecting part 634, suppressing problems with their sliding motion. In addition, the ingress of foreign matter into the downward elastic member 632 and the upward elastic member 633 can be suppressed, thus maintaining the performance of the biasing force. The embankment section 4 is positioned in front of the working unit input shaft 14. In other words, since the working unit input shaft 14 is positioned behind the virtual fourth link 64, the drive shaft 131 can transmit power within an appropriate bending angle range in a plan view, enabling continuous ridge formation work. Furthermore, since the second link 62 and the third link 63 are located below the working unit input shaft 14, the drive shaft 131 can transmit power within an appropriate range of bending angles in the vertical direction when viewed from the side. The combined bending angle of the drive shaft 131 can also be used within an appropriate range when viewed from the top and from the side, thus enabling even more continuous ridge-forming work.

[0059] In forward operation, since the ridge-forming machine A is positioned at the rear of the machine in the direction of travel, it is physically impossible to excavate the original ridge and form the new ridge for the length of the machine. Therefore, by switching the direction of travel of the machine so that the ridge-forming machine A is at the front of the machine, it becomes possible to form the ridge all the way to the end of the ridge. I will explain the reverse operation. In reverse operation, the offset frame 21 and the work unit W are positioned on the other side of the traveling machine, and the traveling machine is moved in reverse to form the ridge. In this embodiment, the offset frame 21 and the work unit W are positioned on the left side of the traveling machine with respect to the forward direction of the traveling machine. In this state, it is possible to perform reverse operation to form the ridge by moving the traveling machine in reverse. The ridge forming machine A is positioned on the forward side of the direction of travel, which is the direction of reverse movement of the traveling machine, to form the ridge. In both forward and reverse operation, the work unit W is positioned so that the front side in the direction of travel is the embankment, and the forming unit is positioned behind the embankment in the direction of travel.

[0060] In the case of reverse operation, the embankment section 4 is more likely to come into contact with a ridge that is positioned in a direction intersecting the ridge that is being excavated from the original ridge and formed into a new ridge. When the embankment section 4 reaches the intersecting ridge, it is unable to advance any further, and the forming of the new ridge at the forming section 5 behind the embankment section 4 becomes impossible. In other words, an unformed section is created. The intersecting ridge may be a ridge that is yet to be formed into a new ridge, or it may be a new ridge that has already been formed.

[0061] When the embankment section 4 reaches the intersecting ridge D, the excavation rotor 43a of the embankment section 4 is raised so that it is positioned above the top surface of the ridge, thereby allowing the forming section 5 to reach the end of the ridge, which is the intersection point with the intersecting ridge, while avoiding contact between the embankment section 4 and the intersecting ridge. By continuing to form a new ridge with the forming section 5 up to the end of the ridge, efficient ridge formation becomes possible. Furthermore, even if the embankment section 4 comes into contact with an obstacle during excavation and lifting / lowering operation, the lifting / lowering link mechanism 6, the downward elastic member 632, the upward elastic member 633, etc., absorb the impact of the contact. The embankment section 4 can properly form a ridge up to the end of the original ridge even if there are foreign objects other than soil in the old ridge. Since the lifting / lowering link mechanism 6 absorbs the impact, the impact is not transmitted to the traveling machine, and the operator riding in the traveling machine can work comfortably.

[0062] In the embodiment, the excavation blade rotation axis 43c and excavation rotor 43a of the embankment section 4, and the upper surface treatment rotor 43b of the upper surface treatment section 41b were described as being oriented horizontally perpendicular to the direction of work, but the embodiment is not limited to this configuration. The excavation blade rotation axis 43c and the excavation rotor 43a may be arranged horizontally parallel to the direction of travel, or they may be arranged in an inclined direction vertically or horizontally relative to the direction of travel. Furthermore, although the excavation trace formed by excavating the side of the original ridge was described as being staircase-shaped, the excavation trace is not limited to the example shown. By changing the shape and arrangement of the excavation blade 40, or by changing the orientation of the excavation rotor 43a and the upper surface treatment rotor 43b described above, when viewed from the direction of the original ridge, it is possible to excavate almost parallel to the side of the original ridge, excavate in a curved shape including an arc, excavate in a combination of various curves, or excavate in a combination of straight and curved shapes. The embankment section 4 may consist only of the excavation section 41a, and the upper surface treatment section 41b may be omitted.

[0063] Let me explain the embankment cover 42a. The embankment section 4 is equipped with an embankment section cover 42a. The embankment section cover 42a covers the upper part of the excavation rotor 43a without changing its relative positional relationship with the transmission case 162. The embankment section 4 is provided with an embankment section cover 42a that covers the upper and rear of the excavation rotor 43a. The embankment section cover 42a may also cover the upper part of the embankment section 4, which is the pre-processing section. The embankment section cover 42a is provided integrally with the embankment transmission case, which is the embankment transmission section 161. That is, the relative position of the embankment section cover 42a does not change regardless of the raising and lowering of the embankment section 4. The embankment cover 42a is open at the front and rear during operation, allowing the old ridge that moves relative to it during operation to be supplied to the excavation rotor 43a side, and the excavated soil excavated by the excavation rotor 43a to be supplied to the rear forming section 5.

[0064] The rear guide section 42c of the embankment cover 42a will now be described. The embankment cover 42a may have a rear guide section 42c. The rear guide section 42c is configured to cover the rear side of the excavation rotor 43a and can guide the excavated soil excavated by the excavation rotor 43a to the side of the ridge and the molded disc body 51. In this embodiment, the rear guide section 42c is provided so as to be at the same height as the excavation blade rotation axis 43c of the excavation rotor 43a, or slightly above the excavation blade rotation axis 43c, extending downward from the upper rear end of the embankment cover 42a. Furthermore, the left-right width of the rear guide section 42c when viewed from the direction of travel is provided so as to overlap with the portion of the excavation rotor 43a that is located on the embankment transmission section 161 side of the molded disc body 51, as shown in Figure 14. In this embodiment, it covers approximately half the width of the excavation width of the excavation rotor 43a. As shown in Figure 14, the rear guide section 42c in a plan view is installed so that it has a surface that slopes towards the rear as it moves from the embankment transmission section 161 side toward the molded disc body 51 side which becomes the ridge side. This surface allows the rear guide section 42c to guide the excavated soil thrown from the excavation rotor 43a toward the machine frame 3 side toward the ridge side, and enables the excavated soil to be pressed by the molded disc body 51 without any leakage.

[0065] The protective cover 7 will be described based on Figures 8 to 11. The embankment section 4 is provided so as to be rotatable relative to the ridge-forming section, and its relative positional relationship with the excavation rotor 43a changes in conjunction with the rotation of the embankment section 4. The protective cover 7 is provided so as to be movable relative to the embankment cover 42a. The protective cover 7 is connected to the machine frame 3 and includes a linking member 72 that changes its relative position to the excavation rotor 43a in accordance with the raising and lowering of the embankment section 4. The protective cover 7 rotates coaxially with the rotation axis of the drilling rotor 43a. The embankment section 4 is further provided with a protective cover 7. The protective cover 7 is positioned above the embankment section cover 42a and is rotatably mounted between above and in front of the embankment section cover 42a. In other words, the protective cover 7 is mounted to be relatively movable with respect to the embankment section cover 42a. The protective cover 7 is mounted to be approximately the same width as the embankment section cover 42a and is mounted to protect the maximum rotation area R of the excavation rotor 43a.

[0066] The pivot axis of the protective cover 7 is coaxial with the drilling blade rotation axis 43c of the drilling rotor 43a. Therefore, the rotation of the protective cover 7 can be made without changing the distance from the maximum rotation region R of the drilling rotor 43a.

[0067] The extension cover 71 will be described based on Figure 8. An extension cover 71 may be positioned at the rear of the protective cover 7, extending to the rearward side. The extension cover 71 is made of a flexible material and can cover parts that the rotating protective cover 7 cannot cover the excavation rotor 43a to complement it. The protective cover 7 may take any form other than those exemplified, and a plate-like member may be configured to extend from the rear end of the protective cover 7 in conjunction with its rotation. Alternatively, the plate-like member may be configured to extend to the rear end of the protective cover 7 in advance.

[0068] The linking member 72 will now be described. A connecting member 72 is provided to connect the protective cover 7 and the machine frame 3. In a side view, the connecting member 72 connects the side of the protective cover 7 and the front of the transmission frame 163. In this embodiment, the connecting member 72 connects the left side of the protective cover 7 to the front of the reinforcing frame 31, which has one end fixed to the base frame 30 and the other end rotatably supporting the embankment transmission section 161 adjacent to the embankment transmission section 161. The reinforcing frame 31 constitutes a part of the machine frame 3.

[0069] As the embankment section 4 moves up and down, the relative angle between it and the machine frame 3 changes. Therefore, by connecting the embankment section 4 and the machine frame 3 with a linking member 72, it is possible to rotate the protective cover 7 in conjunction with the movement of the embankment section 4 up and down. As shown in Figures 8, 10, and 11, in a side view, the machine frame 3, the embankment transmission unit 161, the protective cover 7, and the connecting member 72 can be said to be configured in a four-bar linkage. When the embankment transmission unit 161 rotates relative to the machine frame 3, the protective cover 7 rotates via the connecting member 72.

[0070] This section describes an example of how the protective cover 7 works. When the embankment section 4 is raised, the protective cover 7 extends from the front end of the embankment section cover 42a and moves to the front of the embankment section cover 42a from above the embankment section cover 42a so as to cover the front of the maximum rotation range R of the excavation rotor 43a. When the embankment section 4 is lowered, the protective cover 7 moves from its position on the front side of the embankment section cover 42a, which covers the front of the maximum rotation range R of the excavation rotor 43a, to the upper side of the embankment section cover 42a. In other words, the protective cover 7 rotates in accordance with the raising and lowering of the embankment section 4 so as to change its relative position to the excavation rotor 43a and the embankment transmission section 161.

[0071] Let's consider the case where the embankment section 4 is raised from its normal working position. As the embankment transmission section 161 rises while changing its relative angle with respect to the machine frame 3, the embankment section cover 42a moves to the rear side of the excavation rotor 43a compared to before the embankment section 4 was raised. As a result, the upper and front sides of the excavation rotor 43a become exposed. The protective cover 7 shown in this embodiment can cover the upper and front sides of the excavation rotor 43a that cannot be covered by the embankment section cover 42a of the raised embankment section 4.

[0072] Furthermore, consider a scenario where, for example, the work unit W is performing work while obtaining power from the work unit input shaft 14, and approaches a crossing ridge D that extends in a direction intersecting the work ridge E, which is excavating the original ridge and forming a new ridge. In this case, from the viewpoint of improving work efficiency, the embankment unit 4 may be raised without cutting the power to the embankment unit 4 and the forming unit 5. Even in such a case, the protective cover 7 can prevent the scattering of excavated soil and other materials upward and forward from the rotating excavation rotor 43a. In addition, as the embankment unit 4 is raised and lowered, the protective cover 7 properly covers the excavation rotor 43a, so even if there are obstacles in front of and / or above the excavation rotor 43a when the embankment unit 4 is raised, direct contact with the excavation rotor 43a can be prevented.

[0073] In this embodiment, the protective cover 7 is provided to move above the embankment cover 42a, but it may also be provided to move above the embankment cover 42a. That is, it can be provided to move between the embankment cover 42a and the maximum rotation region R of the excavation rotor 43a. Also, although the protective cover 7 is provided coaxially with the excavation blade rotation axis 43c, which is the rotation axis of the excavation rotor 43a, it is not necessarily limited to this. It is sufficient that the movement of the protective cover 7 prevents it from coming into contact with the excavation rotor 43a, and the distance between the protective cover 7 and the maximum rotation region R of the excavation rotor 43a may change. Also, although it is illustrated as having an extension cover 71, it may consist only of the protective cover 7. The protective cover 7 is not limited to the illustrated shape, and may be changed to a shape that properly covers the excavation rotor 43a on its own.

[0074] The connecting member 72 does not have to connect the protective cover 7 and the aircraft frame 3 in the exemplified position. For example, it may connect the side of the protective cover 7 to another member fixed to the aircraft frame 3. Alternatively, it may connect the top surface of the protective cover 7 to the base frame 30 of the aircraft frame 3. In other words, it is sufficient if the position allows the rotation of the embankment 4 to be linked to the rotation of the protective cover 7. The protective cover 7 is provided to rotate in conjunction with the embankment section 4 using a linking member 72, but this is not limited to this embodiment. It is also possible to rotate the protective cover 7 directly with an actuator such as a cylinder or motor. In this case, the rotation angle of the embankment section 4 may be detected by a sensor or the like, and the rotation of the protective cover 7 may be controlled in conjunction with or causally related to the detection.

[0075] The embankment section 4 is located behind the excavation rotor 43a and is capable of guiding the soil supplied from the excavation rotor 43a to the molded disc body 51. In the side view shown in Figure 2 and below, a rear cover 8 may be provided, which allows at least the main guide surface 81, which is the surface that guides the soil to the molded disc body 51, to rotate from a position in front of the front end of the maximum rotation region R1 of the molded disc body 51 to a position behind the front end of the maximum rotation region R1 of the molded disc body 51. The rear cover 8 covers the rear side of the excavation rotor 43a. In this example, the rear cover 8 is provided so as to be continuous with the rear end of the embankment cover 42a. More specifically, the rear cover 8 is positioned so as to be continuous downward with the rear guide portion 42c of the rear of the embankment cover 42a.

[0076] The rear cover 8 is rotatable from a position where its front edge 87, in a side view, is located in front of the front end of the maximum rotation region R1 of the molded disc body 51, to a position where it is located behind the front end of the maximum rotation region R1 of the molded disc body 51. In other words, the rear cover 8 has a main guide surface 81, which in a side view is at least the surface that guides the soil to the molded disc body 51, that is rotatable from a position outside the maximum rotational outer diameter of the molded disc body 51 to a position inside the maximum rotational outer diameter of the molded disc body 51.

[0077] Furthermore, the rear cover 8 is rotatable so that its leading edge 87, when viewed from the side, moves from a position outside the maximum rotational outer diameter of the molded disc body 51 to a position within the maximum rotational outer diameter of the molded disc body 51. The rear cover 8 is configured to be passively rotatable by external force, from a position that does not overlap with the molded disc body 51 to a position that overlaps with the molded disc body 51 in a side view. The rear cover 8 changes its relative position to the excavation rotor 43a, which rises as the embankment section 4 rotates. The rear cover 8 is configured to be rotatable coaxially with the rotation axis of the drilling rotor 43a.

[0078] The rear cover 8 provided on the embankment section 4 is positioned separately from the embankment section cover 42a, which covers the upper side of the excavation rotor 43a, and is rotatable independently of it. The rear cover 8 is equipped with an engaging portion 84 that engages with the embankment cover 42a when the embankment 4 rotates, causing the rear cover 8 to rotate in a direction that pushes it backward.

[0079] The rear cover 8 is configured to cover the rear side of the excavation rotor 43a below the rear guide section 42c. This allows the excavated soil excavated by the excavation rotor 43a to be guided to the ridge side and the molded disc body 51. Furthermore, the rear cover 8 is provided so as to be able to rotate in the front-rear direction independently of the rotating embankment section 4 with respect to the machine frame 3.

[0080] Further details of the rear cover 8 will be explained. The rear cover 8 is a plate-shaped member that is bent in a crank shape when viewed from above, and has a main guide surface 81 that changes the direction in which the excavated soil excavated by the excavation rotor 43a is discharged and guides it toward the side of the ridge, a front guide surface 82 that is provided continuously forward from one end of the main guide surface 81 and protrudes forward from the main guide surface 81, and a rear guide surface 83 that protrudes to the rear front from the other end of the main guide surface 81 and has a rotating part at its upper part that can rotate relative to the machine frame 3.

[0081] The rear guide surface 83 will be described further. The rear guide surface 83 is a plate-shaped member positioned between the transmission case 162 of the transmission frame 163 and the molded disc body 51 when viewed from the direction of travel. In the reference position of the working state in this embodiment, the lower end of the rear guide surface 83 is positioned below the drilling blade rotation axis 43c and above the lower end of the maximum rotation region R of the drilling rotor 43a. In addition, in the reference position of the working state viewed from the side, the rear end of the rear guide surface 83 is provided to overlap with the front part of the molded disc body 51. As a result, the rear guide surface 83 suppresses the movement of excavated soil guided by the excavation rotor 43a and the main guide surface 81 (described later) away from the ridge, and makes it possible to effectively concentrate the excavated soil onto the molded disc body 51. The reference position for the working state is the state in which the lower end of the maximum rotation area R of the excavation rotor 43a is at approximately the same height as the lower end of the maximum rotation area R1 of the molded disc body 51, as shown in Figures 2, 3, 5, and 12 in a side view. The reference position is also the standard positional relationship between the embankment section 4 and the molding section 5 during the ridge forming operation. The embankment section 4 performs the ridge forming operation while adjusting its position vertically based on the reference position, which is the standard position. Not limited to the above example, the relative positional relationship between the embankment section 4 and the molding section 5 can be appropriately changed depending on the implementation method.

[0082] The upper part of the rear guide surface 83 is rotatably attached to the machine frame 3, making the rear cover 8 rotatable. In this embodiment, the rear guide surface 83 is attached adjacent to the transmission case 162, which is coaxial with the embankment section rotation shaft 161a of the embankment transmission unit 161, making the rear cover 8 rotatable relative to the machine frame 3.

[0083] The main guide surface 81 is formed to be continuous with the front end of the rear guide surface 83. In the reference position of the working state, the main guide surface 81 is positioned and formed to be continuous with the rear guide portion 42c of the embankment cover 42a on the lower side. Also, in the reference position, the main guide surface 81 is on the front side with respect to the machine frame 3 and is located in front of the embankment transmission unit 161 and the transmission case 162 of the transmission frame 163. The upper end of the main guide surface 81 in the reference position is set at the same height as the drilling blade rotation axis 43c or at a height that reaches slightly above the drilling blade rotation axis 43c. The lower end of the main guide surface 81 is below the drilling blade rotation axis 43c and is located above the lower end of the maximum rotation area R of the drilling rotor 43a. The height setting of the lower end of the rear cover 8 does not obstruct the operation of the drilling rotor 43a and the molded disc body 51.

[0084] Furthermore, the left-right width of the main guide surface 81, as viewed from the direction of travel shown in Figure 9, is set to overlap with the portion of the excavation rotor 43a that is located on the embankment transmission unit 161 side of the molded disc body 51, similar to the rear guide section 42c. In a side view, the main guide surface 81 can be said to cover the rear of the excavation rotor 43a.

[0085] As shown in Figure 14, the main guide surface 81 in plan view is installed to have a surface that slopes towards the rear as it moves from the embankment transmission unit 161 side toward the molded disc body 51 side which is the ridge side, similar to the rear guide section 42c. Together with the rear guide section 42c, the main guide surface 81 guides the excavated soil thrown from the excavation rotor 43a toward the machine frame 3 side so that it is concentrated in the front part of the molded disc body 51 on the ridge side, and the excavated soil can be pressed by the molded disc body 51 without any leakage.

[0086] The main guide surface 81 works in cooperation with the rear guide section 42c to guide the excavated soil, which is thrown from the excavation rotor 43a toward the machine frame 3, to the front side of the molded disc body 51 on the side of the ridge. The main guide surface 81, together with the rear guide section 42c of the embankment cover 42a, efficiently collects the excavated soil on the front surface of the molded disc body 51, making it possible to press the excavated soil against the molded disc body 51.

[0087] The front guide surface 82 will now be described. The front guide surface 82 is formed to be continuous with the main guide surface 81 from a different end than the connection portion of the rear guide surface 83. The front guide surface 82 is positioned and formed to project forward continuously from the main guide surface 81. The front guide surface 82 has a surface parallel to the direction of travel and is located directly below the embankment transmission case, which is the embankment transmission unit 161. In this embodiment, the upper end of the front guide surface 82 is located slightly lower than the main guide surface 81, and the height of the lower end is below the drilling blade rotation axis 43c, similar to the lower ends of the main guide surface 81 and the rear guide unit 42c, and slightly above the lower end of the maximum rotation region R of the drilling rotor 43a.

[0088] The front guide surface 82 is a member that restricts the movement of excavated soil from the excavation rotor 43a away from the embankment transmission unit 161 and away from the work ridge E. Through the front guide surface 82, the main guide surface 81, and the rear guide surface 83, the rear cover 8 efficiently guides the excavated soil towards the ridge side and in front of the molded disc 51.

[0089] Let me explain the elastic body 85. An elastic body 85 is attached to the upper part of the rear guide surface 83. The elastic body 85 is a coil spring that spans the machine frame 3 and the upper part of the rear guide surface 83, and constantly biases the rear cover 8 toward the drilling rotor 43a. In this embodiment, the elastic body 85 spans the front side of the transmission frame 163 and the upper part of the rear guide surface 83. When an external force is applied to the rear cover 8 from the drilling rotor 43a side, which is the forward side in the direction of travel, toward the molding section 5 side, which is the rear side in the direction of travel, the rear cover 8 is designed to rotate toward the rear if the force overcomes the resistance of the elastic body 85. When the external force is removed, the rear cover 8 rotates toward the drilling rotor 43a side.

[0090] Let me explain Regulatory Body 86. The rear cover 8 has a restricting body 86 that restricts rotation in the direction approaching the digging rotor 43a. The restrictor 86 is provided on the machine frame 3 so as to be in contact with the front part of the rear guide surface 83, and restricts the rear cover 8 from moving toward the excavation rotor 43a, which is on the front side. In this embodiment, the restrictor 86 is provided on the transmission case 162, which has a pin-shaped member arranged on the transmission frame 163. The restrictor 86 restricts the rear cover 8 from moving forward from the position where it is positioned to be continuous with the embankment cover 42a when the embankment 4 in the working state is at the reference position.

[0091] The engaging portion 84 will now be described. An engaging portion 84 is provided at the upper end of the main guide surface 81. The engaging portion 84 is provided so as to be able to engage with an engaged portion 42a1 provided on the embankment cover 42a. In this embodiment, the engaging portion 84 is the front surface of the upper end of the main guide surface 81, and the engaged portion 42a1 is the rear surface of the lower end of the rear guide portion 42c provided on the embankment cover 42a. The engaging portion 84 engages with the engaged portion 42a1, and by bringing the surface of the engaging portion 84 into contact with the surface of the engaged portion 42a1, it is possible to restrict the rotation of the rear cover 8. When the embankment 4 is lowered from its reference position, the engaging portion 84 maintains a predetermined distance between the rear cover 8 and the excavation rotor 43a. Specifically, when the embankment section 4 is lowered, the engaged portion 42a1 of the embankment section cover 42a, which rotates integrally with the embankment section 4, engages with the engaging portion 84, thereby enabling the rear cover 8 to be pushed upward relative to the aircraft frame 3.

[0092] In other words, when raising or lowering the embankment section 4, and especially when rotating the embankment section 4 downward from the reference position, maintaining the positional relationship between the embankment section cover 42a and the rear cover 8 makes it possible to maintain the continuity between the rear guide portion 42c of the embankment section cover 42a and the main guide surface 81. Therefore, even when rotating the embankment section 4 downward from the reference position, it is possible to restrict the rear cover 8 from approaching the excavation rotor 43a, and the guiding performance of the rear cover 8 to the shaping section 5 is not impaired. Furthermore, the rear cover 8 at the reference position is also a branching point where continuity with the rear guide portion 42c of the embankment section cover 42a can be maintained. When the embankment section 4 is raised from the reference position, the rear cover 8 is configured to separate from the embankment section cover 42a, and when the embankment section 4 is lowered from the reference position, the rear cover 8 rotates integrally with the embankment section cover 42a. Therefore, when the embankment section 4 rises, the rear cover 8 is not positioned below the excavation rotor 43a, preventing the rear cover 8 from coming into contact with the top surface of the original ridge. The embankment section 4 only needs to rise to the minimum necessary extent, and excessive rising is avoided.

[0093] The operation details will be explained. The operation of the rear cover 8 will be explained in conjunction with the raising and lowering of the embankment section 4 and the positional relationship of the ridges, etc. Furthermore, in the following explanation, the operation of each part will be described in the reverse operation state to facilitate understanding. Note that in reverse operation, the reverse direction of the traveling machine is the forward direction of travel in the ridge forming operation.

[0094] First, the worker adjusts the embankment section 4 to the reference position shown in Figures 1 to 5, 8 to 10, 12, and 13, or to a position below the reference position. The excavation rotor 43a and the molded disc body 51 are rotated, and the work section W is advanced toward the excavation rotor 43a. The rear cover 8, in cooperation with the embankment section cover 42a, guides the excavated soil excavated by the excavation rotor 43a toward the front of the molded disc body 51 on the side of the ridge.

[0095] When the vertical height of the original ridge decreases, the machine is operated to rotate the embankment section 4 relative to the machine frame 3 to further lower it. At this time, the rear cover 8 is pressed by the engagement of the engaging part 84 and rotates relative to the machine frame 3 so as to push the rear cover 8 upward toward the rear. When the embankment section 4 rotates downward from the reference position, the rear cover 8 rotates in conjunction with the embankment section cover 42a and coaxially with the embankment transmission section 161, so the positional relationship of the rear cover 8 with respect to the embankment section cover 42a does not change. As a result, the embankment section 4 can properly guide the excavated soil without causing soil leakage, which is a state where the excavated soil is thrown away from the ridge, and the work can continue without any change in the soil guiding performance. The ridge shaping work can be performed within the working range from the reference position to the lowest position shown in Figures 7 and 15, and the height of the embankment 4 is adjusted as appropriate according to the height of the original ridge.

[0096] As the work unit W continues the ridge-forming work, it will eventually reach the end of the ridge. At the end of the ridge, there is a crossing ridge D that runs in a direction intersecting with the working ridge E, which has been worked on so far. When the height of the embankment unit 4 continues the ridge-forming work within its working range and reaches the end of the working ridge E, the front end of the excavation rotor 43a of the embankment unit 4 first reaches the crossing ridge D. Since the excavation rotor 43a cannot excavate against the crossing ridge D, the work unit W, having reached the crossing ridge D with the embankment unit 4, cannot continue its movement and continue the ridge-forming work. On the other hand, the forming unit 5 of the work unit W has not reached the crossing ridge D that connects to the end of the working ridge E. In other words, the end of the working ridge E remains in an unformed state.

[0097] When the excavation rotor 43a is above the intersecting ridge D and the lower end of the maximum rotation area R is raised above the upper surface of the intersecting ridge D, contact with the intersecting ridge D can be avoided, allowing the working unit W to continue moving toward the intersecting ridge D. When the embankment section 4 is raised upward from its reference position, the rear cover 8 attempts to rotate in accordance with the rise of the embankment section 4 due to the biasing force of the elastic body 85. However, the restricting body 86 prevents the rear cover 8 from rotating toward the excavation rotor 43a. Therefore, even if the embankment section 4 is raised above its reference position, the rear cover 8 does not rise from the position it was in when the embankment section 4 was at its reference position. When the embankment section 4 is raised, the rear cover 8 is not positioned directly below the front half of the maximum rotation region R of the excavation rotor 43a. As a result, by ensuring an empty space directly below the excavation rotor 43a when the embankment section 4 is raised, the excavation rotor 43a can avoid crossing ridges D with minimal upward movement.

[0098] With the maximum rotation area R of the excavation rotor 43a positioned above the intersecting ridge D, the work unit W continues to advance toward the intersecting ridge D. The rear cover 8, located on the forward side in the direction of travel of the molding unit 5, reaches the intersecting ridge D after the excavation rotor 43a. Upon reaching the intersecting ridge D, the front end of the rear cover 8 contacts the intersecting ridge D. In this embodiment, the front edge 87 of the front guide surface 82 contacts the side of the intersecting ridge D. Note that, in the reference position, at least the front guide surface 82 and the main guide surface 81 of the rear cover 8 are located in front of the molded disc body 51. Also, in the reference position, the front edge 87 of the rear cover 8 is also located in front of the molded disc body 51. In a side view, less than half of the area of ​​the rear guide surface 83 of the rear cover 8 overlaps with the maximum rotation area R of the molded disc body 51. In this embodiment, 25% overlap.

[0099] At the start of contact between the front edge 87 of the rear cover 8 and the intersecting ridge D, and before contact, the front edge 87 of the rear cover 8 in a side view is located in front of the front end of the maximum rotation region R1 of the molded disc body 51. Alternatively, it can be said that the front edge 87 of the rear cover 8, pushed by the intersecting ridge D, is located outside the maximum rotational outer diameter (maximum rotation region R1) of the molded disc body 51. Furthermore, at the start of contact between the front edge 87 of the rear cover 8 and the intersecting ridge D, and before contact, the main guide surface 81 of the rear cover 8, which guides the excavated soil to the molded disc body 51, is located in front of the front end of the maximum rotation region R1 of the molded disc body 51 in a side view. Alternatively, it can be said that the main guide surface 81 of the rear cover 8, which guides the excavated soil to the molded disc body 51, is located outside the maximum rotational outer diameter of the molded disc body 51 in a side view. Therefore, until the front edge 87 of the rear cover 8 comes into contact with the intersecting ridge D, the excavated soil moving from the embankment 4 can be properly guided to the molding section 5.

[0100] As the work section W continues to move, the front edge 87 is pushed against the side of the intersecting ridge D. The rear cover 8 receives an external force that attempts to rotate relative to the rear in the direction of travel due to the pressure with the intersecting ridge D. Subsequently, when the external force received by the rear cover 8 resists the biasing force of the elastic body 85, it causes the rear cover 8 to rotate to the rear. At this time, the molding section 5 is continuing its molding operation. Also, since at least the excavation rotor 43a of the embankment section 4 is located above the upper surface of the ridge, no excavated soil is supplied from the excavation rotor 43a to the molding section 5.

[0101] As the movement continues towards the intersecting ridge D, the pressure on the rear cover 8 by the intersecting ridge D continues, causing the rear cover 8 to continue rotating. As a result, the molding operation by the molding unit 5 can continue, and the molding unit 5 reaches the side of the intersecting ridge D, which is the end of the working ridge E. Specifically, the front end of the maximum rotation range R1 of the molding disc body 51 reaches a position where it can contact the side of the intersecting ridge D. In other words, the molding disc body 51 can work all the way to the end of the ridge.

[0102] After the molded disc body 51 reaches the edge of the ridge and is pushed by the intersecting ridge D, the front edge 87 of the rear cover 8 is located behind the front end of the maximum rotation region R1 of the molded disc body 51 in a side view. Alternatively, it can be said that the front edge 87 of the rear cover 8 pushed by the intersecting ridge D is located within the maximum rotational outer diameter of the molded disc body 51. Furthermore, the main guide surface 81 of the rear cover 8, which guides the excavated soil toward the molded disc body 51 after the molded disc body 51 reaches the edge of the ridge and is pushed by the intersecting ridge D, is located behind the front end of the maximum rotation region R1 of the molded disc body 51 in a side view. Alternatively, it can be said that the main guide surface 81 of the rear cover 8, which guides the excavated soil toward the molded disc body 51 in a side view, is located within the maximum rotational outer diameter of the molded disc body 51. Furthermore, in a side view, the rear guide surface 83 of the rear cover 8, which is pushed by the intersecting ridges D, overlaps with the maximum rotation region R of the molded disc body 51 by at least half of its area. In this embodiment, more than 80% overlaps with the maximum rotation region R1 of the molded disc body 51.

[0103] The above operation allows the molded disc body 51 to reach the end of the ridge where it intersects with the intersecting ridge D, thereby suppressing the occurrence of unformed portions. Furthermore, by configuring the rear cover 8 not to rotate upward from its reference position, the embankment 4 can avoid the intersecting ridge D with minimal upward movement. Additionally, by rotating the rear cover 8, which is located in front of the molded disc body 51 in the direction of travel, due to the external force generated by contact with the intersecting ridge D, the molded disc body 51 can reach the connection point with the intersecting ridge D, which is the end of the ridge.

[0104] The rear cover 8 is configured to rotate passively by utilizing the external force generated by contact with the ridge, thus eliminating the need for drive by actuators or the like. This makes it possible to reduce the energy required to drive the rear cover 8 and the weight of actuators and the like. When raising the embankment section 4 to avoid intersecting ridges D, it is only necessary to raise the embankment section 4 by the amount required to avoid the maximum rotation range R of the excavation rotor 43a. This reduces the energy and time required to raise the embankment section 4, allowing for more efficient ridge formation work.

[0105] The rear cover 8 was described in an example where it rotates to the rear due to contact with the intersecting ridge D, but it is not limited to this example. Since the rear cover 8 can rotate freely to the rear, it can rotate to the rear even when the embankment section 4 is working within the range from the reference position to the lowest position. More specifically, if the excavated soil supplied from the excavation rotor 43a does not flow to the side of the ridge but accumulates between the excavation rotor 43a and the main guide surface 81, the accumulation of excavated soil due to progress becomes an external force, causing the rear cover 8 to rotate to the rear. Then, the engaging portion 84 moves away from the engaged portion 42a1, and the rear cover 8 rotates to the rear, allowing it to overcome the accumulated excavated soil.

[0106] Furthermore, the upper surface treatment rotor 43b of the upper surface treatment unit can continue excavating the upper surface of the ridge even while the embankment 4 and the rear cover 8 are rising. In this case, it is also possible to excavate the upper surface of the intersecting ridge D. Although the above embodiment was described in terms of reverse operation, it can also be applied to forward operation. For example, it includes cases where the machine reaches the intersecting ridge D in a forward operation, while at least steering the machine and turning the offset frame. In the above embodiment, the working section W was described when the ridge forming machine is mounted on either the front or rear of the traveling machine. However, it may also be mounted on the side of the traveling machine, and the ridges may be formed by the forming section 5 until it reaches the intersecting ridge D during forward operation. In the above embodiment, the rotation axis of the digging rotor 43a is described as being oriented horizontally, almost perpendicular to the ridge being formed. However, there are no limitations on the rotation axis of the digging rotor 43a. It may be oriented horizontally, parallel to the direction of travel, or it may be tilted slightly to the left or right from this position. The digging rotor 43a can be tilted in any direction, not just horizontally. [Explanation of symbols]

[0107] A Ridge forming machine D Cross ridge 3. Aircraft Frame 4. Embankment 42a Embankment Cover 43a Drilling rotor 5 Molding section 6. Lifting link mechanism 7 Protective cover 71 Extension Cover 8. Rear cover 13 Input axes 162 Transmission Case

Claims

1. The embankment section, which supplies soil excavated from the original ridge back to the original ridge using an excavation rotor positioned at the tip of a transmission case that is mounted on the machine frame so as to be able to rotate up and down, A forming unit located behind the embankment in the direction of travel, which presses soil supplied from the embankment onto the original ridge while rotating to form a new ridge, The embankment section includes a lifting link mechanism that allows the excavation rotor to move up and down relative to the molding section, The aforementioned machine frame is equipped with an input shaft for supplying power to the embankment section, The embankment section is configured to be rotatable relative to the molding section independently of the operation of the lifting link mechanism, and is rotatable above the upper surface of the original ridge by the operation of the lifting link mechanism, and the input shaft is located behind the pivot point of the transmission case. A ridge-forming machine characterized by the following.

2. A part of the lifting link mechanism is located below the input shaft. The ridge forming machine according to feature 1.

3. The aforementioned lifting link mechanism includes a first link rotatably connected to the machine frame, A second link rotatably connects the aforementioned aircraft frame and the first link and is extendable and retractable in the longitudinal direction, The device comprises a third link connected to the first link by a connecting portion that allows it to rotate and slide, and the elastic member being fitted into at least one side of the connecting portion, The third link is located below the input shaft. The ridge forming machine according to feature 2.

4. When the embankment section is rotated to a position above the upper surface of the original ridge, the rotation axis of the excavation rotor is located above the rotation axis of the molding section. The ridge forming machine according to feature 2 or 3.

5. When the embankment is rotated to a position above the upper surface of the original ridge, the rotation axis of the excavation rotor is such that the first link is located above the support axis relative to the machine frame. The ridge forming machine according to feature 2 or 3.

6. The lifting link mechanism includes an elastic member that allows the embankment to rotate and biases it in a direction opposite to the direction of rotation, A ridge forming machine according to claim 2 or 3, characterized by comprising the above.

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