Ridge painting machine

Abstract

To provide a levee plastering machine capable of reducing a load applied to an operator.SOLUTION: A levee plastering machine 1 comprises: a banking body for cultivating soil and banking the soil; a levee formation body 37 for compacting the soil and forming levees; and side cover means 50 for covering a side part of the banking body. The side cover means 50 has a plate-shaped side cover body 91 which is vertically movable to the banking body. The side cover body 91 can be switched between a first state in which the side cover body is movable between an upper limit position and a lower limit position, and a second state in which the side cover body is held to a holding position where maintenance work to the banking body is possible by the side cover body.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a ridge painting machine for performing ridge painting work. [Background technology]

[0002] 2. Description of the Related Art Conventionally, for example, a ridge coating machine as described in Patent Document 1 below is known.

[0003] This conventional ridge coating machine is coupled to a traveling vehicle such as a tractor and performs ridge coating work while moving by the traveling vehicle, and is equipped with an embankment body (pretreatment body) that tills and piles up the soil, a ridge forming body (ridge preparation body) that compacts the soil to form ridges, and a side cover that prevents soil from scattering during tilling. The side cover is supported by a pair of link members and can be moved between an upper limit position (upper end position) and a lower limit position (lower end position). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2015-15936 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, the conventional ridge-pasting machine has a problem in that the side covers get in the way when performing maintenance work on the embankment, placing a heavy burden on the worker.

[0006] The present invention has been made in consideration of the above points, and has an object to provide a ridge coating machine that can reduce the burden on the operator. [Means for solving the problem]

[0007] The ridge application machine of the present invention comprises an embankment body that tills and piles up the soil, a ridge forming body that compacts the soil to form ridges, and side cover means that covers the sides of the embankment body, the side cover means having a side cover body that can be switched between a first state in which it can be moved between an upper limit position and a lower limit position, and a second state in which it is held in a holding position where maintenance work can be performed on the embankment body. Effect of the Invention

[0008] According to the present invention, the burden on the worker can be reduced. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a plan view of a ridge coating machine according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a side view of the same furrow coating machine (with the side cover body in the lowermost position). [Diagram 3] This is a side view of the same furrow coating machine (with the side cover body positioned at the upper limit position). [Figure 4] FIG. 2 is a side view of the same furrow coating machine (with the side cover body in the holding position). [Diagram 5] 1A and 1B are perspective views showing a side cover means (guide device) of the same ridge coating machine, and FIG. 1C is a side view showing a part of the upper link member. [Figure 6] 4(a) to 4(c) are side views showing the side cover means of the same. [Figure 7] 1 is a side view showing the state of water supplying operation to the tank of the sprinkler device. FIG. [Figure 8] FIG. 13 is a diagram for explaining an example in which two pins are used. [Figure 9] 13A and 13B are diagrams showing a side cover means of a ridge coating machine according to another embodiment of the present invention, in which (a) is a side view in a state where the side cover body is positioned at the upper limit position, and (b) is a cross-sectional view taken along line AA. [Figure 10] FIG. 4A is a side view showing the side cover means in the state where the side cover body is located at the retaining position, and FIG. 4B is a BB sectional view. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] An embodiment of the present invention will be described with reference to FIGS.

[0011] In the figure, reference numeral 1 denotes a ridge coating machine, which is an agricultural machine used by being connected to a three-point link 3 at the rear of a tractor 2, which is a traveling vehicle. The ridge coating machine 1 performs ridge coating work (ridge repair work) while moving along the ridge as the tractor 2 travels. The type of three-point link (three-point support device) 3 at the rear of the tractor 2 is arbitrary, and may be, for example, either a standard three-point link or a special three-point link.

[0012] As shown in Figures 1 and 2, the ridge painting machine 1 comprises a body 6 that is detachably connected to a three-point link 3 at the rear of the tractor 2, a working means (offset working means) 7 that is provided on the body 6 and performs ridge painting work at a desired offset position relative to the tractor 2, and a sprinkler device 8 that is a liquid supply means that supplies liquid water to the working means 7.

[0013] The machine body 6 has a fixed machine frame 11 that is detachably connected to the three-point link 3 at the rear of the tractor 2, and a movable machine frame 12 that is movable in the left-right direction relative to the fixed machine frame 11 (offsetable relative to the tractor). The movable machine frame 12 is connected to the fixed machine frame 11 via a connecting means 15 having two rotating arms 13, 14, and the working means 7 is provided on this movable machine frame 12. The movable machine frame 12 is rotatable relative to the rotating arms 14, centered on a rotating fulcrum 10 located at the rear of the ridge coating machine 1.

[0014] The movable frame 12 moves relative to the fixed frame 11 based on the extension and contraction of a cylinder 18, which is an extension and contraction driving means such as an electric hydraulic cylinder, and the working means 7 is selectively switched at least between a working state (forward working state) and a stored state. In the stored state, the working means (working unit) 7 is located in the rear area of ​​the tractor 2, but in the working state (offset state), it is located at an offset position shifted laterally from the rear area. The amount of offset in the working state can also be adjusted by the extension and contraction of the cylinder 18. In addition, for example, a configuration in which the switching is performed manually or a configuration in which the working state can be switched to a return working state (reverse working state) may also be used.

[0015] The fixed machine frame (front frame) 11 has a three-point connection part 20 that is detachably connected to a three-point link (three-point hitch part) 3 via, for example, a coupler (not shown). The three-point connection part 20 has one top mast 21, two lower arms 22, a top pin (upper pin) 23 attached to the tip of the top mast 21, and a lower pin (lower pin) 24 attached to the tip of the lower arm 22.

[0016] The top pin 23 is made of a round shaft-shaped member having an axial direction in the left-right direction, and is detachably attached to one of a plurality of attachment holes 25 formed at the tip of the top mast 21 of the three-point connecting part 20. The base end of the top mast 21 is attached to a mast attachment part 28. The front end of the right rotating arm 14 is rotatably attached to the mast attachment part 28.

[0017] The fixed machine frame 11 has an input shaft 26 that is detachably connected to a power transmission joint that is connected to, for example, a PTO shaft (not shown), and that inputs power from the tractor 2 when the PTO shaft of the tractor 2 rotates.

[0018] The power input by the input shaft 26 is transmitted to the working means 7 via the power transmission means 27. The working means 7 performs work based on the transmitted power. The upper part of the input shaft 26 is covered with an input shaft cover 17.

[0019] The fixed machine frame 11 has a longitudinal frame section 30 that is elongated in the left-right direction. At both longitudinal ends of the frame section 30, there are provided U-shaped stand holder sections 31 for removably mounting a stand (not shown). At two longitudinal intermediate positions of the frame section 30, mounting plate sections 32 are fixed, and the base ends (upper ends) of the lower arms 22 are attached to the mounting plate sections 32.

[0020] Furthermore, a longitudinal protruding frame portion 33 protrudes diagonally downward and rearward from a portion of the longitudinal frame portion 30 located near the left mounting plate portion 32. The front end portion of the left rotating arm 13 is rotatably attached to the rear end portion of the protruding frame portion 33. The protruding frame portion 33 is disposed near the side of a tank 71, which is a container-shaped liquid storage portion in which water (liquid) is stored.

[0021] The working means 7 has an embankment body 36 that plows the rice field surface and ridges (original ridges) while rotating in a predetermined direction to pile up the soil, a ridge forming body 37 that forms a ridge (new ridge) by compacting the embankment (cultivated soil) made by the embankment body 36 while rotating in the predetermined direction, and an upper surface scraping body 38 that scrapes the upper surface of the ridge (original ridge) while rotating in the predetermined direction. The embankment body 36, ridge forming body 37 and upper surface scraping body 38 are all rotatably mounted on the movable machine frame 12.

[0022] The movable machine frame 12 is provided with an embankment body cover 41, a ridge forming body cover 42 and an upper surface scraping body cover 43. A side cover means 50 for preventing soil scattering that covers the side (right side) of the embankment body 36 is provided on a side plate portion 44 on the right side (outside) of the embankment body cover 41.

[0023] Here, the banking body 36 has a rotating shaft 51 supported by the movable machine frame 12, and a plurality of tilling tines (banking tines) 52 detachably attached to the rotating shaft 51. The rotating shaft 51 has a round shaft-shaped shaft main body portion 51a extending in the left-right direction, and a plurality of tine mounting portions 51b provided on the shaft main body portion 51a so as to protrude radially outward, and the tilling tines 52 are detachably attached to each of the tine mounting portions 51b by mounting fixtures (e.g., bolts and nuts, etc.) 49.

[0024] The upper surface scraper 38 has a rotating shaft 53 supported by the movable machine frame 12, and a plurality of tilling tines (scuffing tines) 54 detachably attached to the rotating shaft 53. The working depth (cultivation depth) of the embankment body 36 and the upper surface scraper 38 can be adjusted by the extension and retraction of a cylinder 55, which is an extension and retraction drive means such as an electric hydraulic cylinder (it may also be configured to be manually adjustable).

[0025] The ridge forming body 37 has a rotating shaft 56 supported by the movable machine frame 12, and a ridge forming member 57 detachably attached to the rotating shaft 56. The ridge forming member 57 is composed of a stepped truncated cone-shaped ridge side forming part 58 that forms the ridge side surface, and a stepped cylindrical ridge upper surface forming part 59 that forms the ridge upper surface.

[0026] The ridge side forming part 58 has a base 61 and a plurality (e.g., eight) of ridge side forming plates (face plates) 62 removably attached to the base 61. Each ridge side forming plate 62 is formed, for example, in the shape of a fan and a curved plate convex on the outer surface side. The ridge top surface forming part 59 consists of an upper surface roller 63, and a plurality of spiral step portions 64 are formed on the outer circumferential surface of this upper surface roller 63.

[0027] The sprinkler device 8 sprinkles water onto the ridge forming body 37 in order to prevent soil from adhering to the ridge forming body 37, for example, when the soil is sticky. For example, a worker in the driver's seat of the tractor 2 can adjust the amount of water sprinkled (including zero) by operating a remote control to control the pump of the sprinkler device 8. Note that it is also possible to adopt a configuration in which the amount of water sprinkled is adjusted by operating a cock, or a configuration in which the amount of water sprinkled is automatically adjusted by detecting soil adhering to the surface of the ridge forming body 37.

[0028] The sprinkler device 8 comprises a tank support 70 which is removably attached to the fixed machine frame 11 which is the fixed part of the body 6, a tank 71 which is supported by the tank support 70 and at least a part (at least half or more), i.e., for example, the entirety (including almost the entirety), of which is located below the center of the top pin 23 of the fixed machine frame 11, and a hose 73 which is a pipe whose base end is connected to a connection port (liquid outlet portion) 72 formed at the bottom of the tank 71 and whose tip end extends to the ridge forming body 37 and is located in the vicinity of the ridge forming body 37.

[0029] In addition, the sprinkler device 8 has an opening / closing lid (cap) 78 that opens and closes a top opening (liquid inlet portion) 77, which is an opening formed at the top of the tank 71, and this opening / closing lid 78 is removably attached to the top of the tank 71.

[0030] Furthermore, the watering device 8 has a motor-driven pump (not shown) provided midway along a long, thin, flexible hose 73, and a plurality of watering nozzles 74 attached to the tip end of the hose 73 and facing the ridge forming body 37. The watering nozzles 74 are attached to a nozzle attachment member 75 attached to the movable machine frame 12 so that their orientation can be adjusted.

[0031] Here, the tank 71 is made of a rectangular parallelepiped container member having, for example, four sides, front, back, left and right, and has a circular top opening 77 on its top surface (upper end) for pouring water into the tank 71, and this top opening 77 can be opened and closed with an opening / closing lid 78.

[0032] Specifically, the tank (container member) 71 has a main body 79 for storing water, and a short cylindrical portion 80 protruding upward from the upper surface of the main body 79, with an upper opening (circular space) 77 formed by the upper end surface opening of the cylindrical portion 80, and this upper opening 77 is closed in an openable / closable manner by an opening / closing lid 78 attached to the cylindrical portion 80.

[0033] An upper opening (water supply port) 77 for introducing water into the inside of the main body 79 of the tank 71 is located below the center of the top pin 23 (in other words, the central axis X in the left-right direction passing through the axis of the top pin) when the tank 71 is in the horizontal position (the working position of the ridge coating machine). On the other hand, a connection port 72 at the bottom of the tank 71 is located below the center of the lower pin 24 (in other words, the central axis Y in the left-right direction passing through the axis of the lower pin). In this state, the inclination angle α of the input shaft 26 with respect to the horizontal direction is, for example, 5 degrees.

[0034] In this state, when viewed from above, the working implement 7 in an offset working state is located to one side (right side) of the input shaft 26 in the fore-and-aft direction, and the tank 71 in a horizontal position is located to the other side (left side) of the input shaft 26 in the fore-and-aft direction (see FIG. 1).

[0035] 1, in plan view, the tank 71 is located at the front of the ridge coating machine 1 (the position on the fixed frame side) and to the side of the embankment 36, and the tank 71 and the embankment 36 are lined up in the left-right direction in plan view. In other words, the tank 71 is located forward of the pivot fulcrum 10 on the rear side of the ridge coating machine 1, and is disposed in a position where it does not rotate together with the movable frame 12.

[0036] Furthermore, the left side surface (left end) 71a of the tank 71 is positioned so as to protrude outward from the left stand holder portion (left end of the fixed machine frame) 31. That is, in a plan view, at least a part (left side) of the tank 71 is positioned so as to protrude leftward from the left end of the body 6. Furthermore, behind the tank 71, there is a working space 60 where an operator can stand and perform water supply work (see Figs. 1 and 5).

[0037] The tank support 70, which thus fixedly supports the tank 71 at a position on the fixed machine frame 11 side (front position of the ridge coating machine), is detachably attached to the left side of the fixed machine frame 11, and has a pair of left and right L-shaped mounting members (two stays) 81, 82 that face each other at a distance, and a support member (one tank stand) 83 that is installed between these mounting members 81, 82 and supports the tank 71. The support member 83 has a plate member 87 on the left side.

[0038] On the other hand, as also shown in Figures 5 and 6, the side cover means 50 has a plate-shaped side cover body (guide plate) 91 that can move up and down to cover the sides of the embankment body 36 during ridge-plastering work by the working means 7, thereby preventing the tilled soil from scattering (spitting out) to the sides.

[0039] Based on the operation (e.g., changing the position) of the operating body 92 operated by the worker, the side cover body 91 can be selectively switched between a first state (working state) in which it can be moved between an upper limit position and a lower limit position during ridge-plastering work, and a second state (holding state) in which it is held in a holding position (a raised position in which the side cover body is raised and is a position higher than the lower limit position) in which maintenance work can be performed on the embankment body 36 during maintenance work.

[0040] 5 and 6, the operating body 92 is configured with, for example, only one round-shaft-shaped pin (operating member) 93. Note that an example in which a plurality of pins, for example, two pins (at least two operating members) 93, 94 are used as the operating body 92 will be described later (see FIG. 8).

[0041] In a first state in which one pin 93 constituting the operating body 92 is positioned at a first position (a position corresponding to the first state) by a positioning body 96, which is a positioning part, the side cover body 91 can move up and down between an upper limit position and a lower limit position to follow the upper surface of the ridge (original ridge).

[0042] On the other hand, in a second state in which the side cover body 91 is lifted and one pin 93 is positioned at a second position (a position corresponding to the second state) by the positioning body 96, the side cover body 91 is held in a desired holding position (raised position) with at least downward movement restricted so that a worker can perform maintenance work on the embankment body 36.

[0043] When the side cover body 91 is in the second state, the embankment 36 is exposed to the sides (the sides of the embankment are not covered by the side cover body) as shown in Fig. 4. This allows the worker to easily perform maintenance work on the embankment 36, such as replacing the tillage tines 52 and removing soil adhering to the surfaces of the tillage tines 52 and the inner surface of the embankment cover 41.

[0044] The holding position in the second state shown in Fig. 4 is the same as (including approximately the same as) the upper limit position in the first state shown in Fig. 3. Specifically, this holding position is a position where the side cover body 91 in the second state does not overlap with the tillage tines 52 of the embankment body 36 in a side view (a position where the side cover body is located above the tillage tines of the embankment body).

[0045] 5, a positioning body (pin mounting plate) 96 for positioning the operating body 92 has a mounting plate portion 97 attached to the side cover body 91, and a protruding plate portion 98 having an L-shaped cross section that protrudes from the upper portion of the mounting plate portion 97 and is located above the side cover body 91. A first hole portion 101 and a second hole portion 102 for inserting a pin are formed in the upper portion of the mounting plate portion 97 and aligned in the front-rear direction. Similarly, a first hole portion 103 and a second hole portion 104 for inserting a pin are formed in the protruding plate portion 98 and aligned in the front-rear direction.

[0046] The two first holes 101, 103 facing each other at a distance form a first positioning unit 106 that positions the pin 93 of the operating body 92 at a first position corresponding to the first state. The two second holes 102, 104 facing each other at a distance form a second positioning unit 107 that positions the pin 93 of the operating body 92 at a second position corresponding to the second state.

[0047] Therefore, the side cover body 91 is in a first state when the pin 93 is inserted into the first positioning portion 106 and located at the first position, but is in a second state when the side cover body 91 is lifted to a predetermined height position and the pin 93 is inserted into the second positioning portion 107 and located at the second position. That is, the side cover body 91 can be selectively switched between the first state and the second state based on the replacement of the pin 93. And, for example, the side cover body 91 can be switched from the first state to the second state simply by replacing the pin 93 with the side cover body 91 lifted to the upper limit position (including the approximately upper limit position).

[0048] The pin 93 has a round shaft portion 93a and a head portion 93b provided at the end of the round shaft portion 93a, and the round shaft portion 93a is formed with a hole portion 93c into which an R pin 105 for preventing it from falling out is inserted.

[0049] The side cover body 91 is supported by a support member 110, which is a support portion, so as to be movable up and down. The support member 110 has a pair of upper and lower longitudinal link members (rotating arms) 111, 112 that are rotatable in the up and down direction relative to the embankment body cover 41.

[0050] The front end of each link member 111, 112 is rotatably connected to a mounting plate 113 attached to the side plate portion 44 of the embankment cover 41 via an axle (rotation fulcrum) 114. The rear end of each link member 111, 112 is rotatably connected to the side cover body 91 via an axle (rotation fulcrum) 115. Based on the rotation of both link members 111, 112, the side cover body 91 moves up and down relative to the embankment (embankment cover) 36 so as to follow the upper surface of the ridge (original ridge).

[0051] Of the two link members 111, 112, the upper link member 111 is provided with a lower limit restriction engagement portion (lowering stop abutment portion) 116, an upper limit restriction engagement portion (upper limit abutment portion) 117, and a retaining engagement portion (fixed abutment portion) 118, each provided at a different position.

[0052] The lower limit restricting engagement portion 116 is a portion that restricts the side cover body 91 from moving downward beyond the lower limit position by engaging (contacting) with the pin 93 positioned at the first position (see FIG. 6(a)). The upper limit restricting engagement portion 117 is a portion that restricts the side cover body 91 from moving upward beyond the upper limit position by engaging with the pin 93 positioned at the first position (see FIG. 6(b)). The holding engagement portion (fixing engagement portion) 118 is a portion that restricts at least downward movement of the side cover body 91 (downward movement due to its own weight) by engaging with the pin 93 positioned at a second position different from the first position, thereby holding the side cover body 91 in a holding position (see FIG. 6(c)).

[0053] Here, the upper link member 111 has a straight, plate-shaped longitudinal portion 121 and a plate-shaped protruding portion 122 integrally formed at the rear end of this longitudinal portion 121 so as to protrude upward, and this protruding portion 122 has a recessed portion 123 cut out therein that opens toward the rear side.

[0054] The lower limit restriction engagement portion 116 is formed in a concave shape at the bottom of one surface (the front surface) of the protruding portion 122. The upper limit restriction engagement portion 117 is formed in a concave shape at the top of one surface of the protruding portion 122. The holding engagement portion 118 is formed at the top of the other surface (the rear surface) of the protruding portion 122. In other words, the holding engagement portion 118 is formed at the top of the recessed portion 123 of the protruding portion 122.

[0055] A movable cover body 127 is attached to the rear end of the side cover body 91 via a rubber plate 126, which is an elastic plate. The angle between the side cover body 91 and the movable cover body 127 can be adjusted by angle adjustment means 128. The angle adjustment means 128 has an adjustment plate 130 in which a plurality of pin holes 129 are formed, and the angle between the two cover bodies can be adjusted by selecting the pin hole into which the adjustment pin 131 is inserted.

[0056] Next, the operation of the ridge coating machine 1 will be described.

[0057] For example, when plastering a ridge with sticky soil, the clayey soil will adhere to the surface of the ridge forming body 37, so it is necessary to use the water sprinkler device 8 to sprinkle water to prevent the soil from adhering.

[0058] In such a case, before starting the ridge painting work, the worker sets the ridge painting machine 1 to the working position shown in Figure 7 (tank horizontal position) using the three-point linkage 3 of the tractor 2, as shown in Figure 7, and performs water supply work to the tank 71 of the sprinkler device 8.

[0059] That is, the worker places the ridge coating machine 1 on the rice field surface in the working position shown in Figure 5, then removes the opening / closing lid 78 from the tank 71, and with the top opening (water supply port) 77 of the tank 71 open upward, uses a container 90, such as a plastic tank, to pour a predetermined amount of water (for example, 20 liters or 30 liters) from the container 90 into the tank 71 through the top opening 77.

[0060] At this time, the upper opening 77 opening upward is located at a lower position than the upper top pin 23 of the three-point connection portion 20 of the fixed machine frame 11, so that the worker can easily perform the water supply work.

[0061] After the water supply work is completed, the ridge coating machine 1 is moved forward (in the direction of travel) along the ridge by driving the tractor 2, while the water sprinkler device 8 sprays water toward the ridge forming body 37, thereby carrying out the ridge coating work.

[0062] Specifically, the upper surface scraping body 38 tills and scrapes the upper side of the ridge, behind which the embankment body 36 tills the rice field surface and the ridge to pile up the soil, and behind which the ridge forming body 37 compacts the mounded soil (cultivated soil) formed by the embankment body 36 to form the ridge.

[0063] At this time, the watering nozzle 74 sprays water in the tank 71 towards the ridge forming body 37, thereby supplying the desired amount of water to the ridge forming body 37. Therefore, even if the soil is sticky, soil is less likely to adhere to the surfaces of the ridge side forming portion 58 and the ridge top surface forming portion 59 of the ridge forming member 57 of the ridge forming body 37. Note that water may be supplied to the soil by the watering device 8 in cases where, for example, the soil has little moisture and the ridge cannot be painted cleanly.

[0064] During such ridge-plastering work, the side cover body 91 is in the first state in which it can move up and down relative to the embankment body 36, so it moves along the top surface of the ridge while covering the sides of the embankment body 36, preventing soil from being discharged to the sides from the tilling tines 52. As a result, the desired amount of soil is supplied to the ridge-forming body 37, and a well-finished ridge is formed.

[0065] On the other hand, for example, when performing maintenance work on the embankment body 36, the worker first removes the pin 93 from the first positioning portion 106 with the side cover body 91 positioned at the lowest position (which may be a position slightly raised from the lowest position), and then manually lifts the side cover body 91 to a predetermined height position (specifically, for example, a position higher than the holding position), and inserts the pin 93 into the second positioning portion 107.

[0066] Based on such replacement of one pin 93, which is the operation body 92 (changing the position from the first position to the second position), the state of the side cover body 91 is switched from the first state to the second state.

[0067] As a result, the side cover body 91 in the second state is held in a holding position, which is a raised position located above the embankment body 36, making it possible for workers to easily perform maintenance work on the embankment body 36 (e.g., replacing the claws, removing soil, etc.).

[0068] Furthermore, according to the ridge coating machine 1, the upper opening 77 of the tank 71 of the sprinkler device 8 is located below the center of the upper top pin 23 of the three-point connection part 20 of the fixed machine frame 11 of the body 6, making the water supply work of filling the tank 71 easier than before and reducing the burden on the worker.

[0069] In addition, when working to paint ridges with the ridge coating machine 1, in a plan view, the working means 7 in an operating state offset relative to the tractor 2 is positioned to one side of the input shaft 26, and the tank 71 is positioned to the other side of the input shaft 26 and the tank 71 is positioned in front of the ridge coating machine 1, so that the overall weight balance is good, making ridge coating work easier and further reducing the burden on the worker.

[0070] Furthermore, the tank support 70 that supports the tank 71 has a pair of mounting members 81, 82 attached to the fixed machine frame 11 and a support member 83 installed between these mounting members 81, 82. Therefore, the tank support 70 with a simple configuration can properly support the tank 71 so that its entirety is positioned below the top pin 23 of the fixed machine frame 11 and forward of the rotation fulcrum 10 of the movable machine frame 12.

[0071] Furthermore, since the side cover body 91 can be selectively switched between the first state and the second state based on the operation of the operating body 92, the side cover body 91 can be switched to the second state and held at the desired upper limit position during maintenance work, so that the side cover body 91 does not get in the way, thereby reducing the burden on the worker.

[0072] Furthermore, since the side cover body 91 can be selectively switched between the first state and the second state based on the replacement of one pin 93 that constitutes the operating body 92, an operator can easily switch the side cover body 91 from the first state to the second state by simply inserting the pin 93 into the second positioning portion 107 while lifting the side cover body 91 to a predetermined height position.

[0073] As shown in FIG. 8, a plurality of operation members 92, for example, two pins 93 and 94, may be used.

[0074] In this case, one pin 93 remains inserted in the first positioning portion 106, and the other pin 94 is inserted and removed (inserted and removed) into and from the second positioning portion 107. In other words, the side cover body 91 can be selectively switched between the first state and the second state based on the insertion and removal of the pin 94 constituting the operation body 92. Then, an operator can easily switch the side cover body 91 from the first state to the second state by simply inserting the pin 94 into the second positioning portion 107 with the side cover body 91 raised to a predetermined height position.

[0075] Moreover, the side cover means 50 may have a configuration as shown in FIGS.

[0076] 9 and 10 is composed of, for example, only one U-shaped pin (operating member) 141. The U-shaped pin 141 is held by a U-shaped frame-shaped pin holder 142 attached to the side cover body 91 so as to be rotatable in the front-rear direction and movable in the left-right direction (horizontal direction). A spring 145, which is a biasing means for biasing the U-shaped pin 141 toward the side cover body 91, is provided between a retaining ring 143 attached to the lower end of the U-shaped pin 141 and a spring receiving portion 144 of the pin holder 142.

[0077] 5, and has an attachment plate portion 146 attached to the side cover body 91 and a U-shaped portion 147 provided at the upper end of the attachment plate portion 146. The U-shaped portion 147 has a pair of opposing plates 148, 149 spaced apart from each other, and one of the opposing plates 148 has a first hole portion 151 and a second hole portion 152 for inserting a pin aligned in the front-rear direction formed therein. The other opposing plate 149 has an arc-shaped long hole portion 153 for guiding a pin that extends in the front-rear direction formed therein.

[0078] The first hole 151 constitutes a first positioning portion 106 that positions the U-pin 141 of the operating body 92 at a first position corresponding to the first state. The second hole 152 constitutes a second positioning portion 107 that positions the U-pin 141 of the operating body 92 at a second position corresponding to the second state.

[0079] Therefore, the side cover body 91 is in the first state when the U-shaped pin 141 is inserted into the first positioning portion 106 and located at the first position, but is in the second state when the side cover body 91 is lifted to a predetermined height position and the U-shaped pin 141 is inserted into the second positioning portion 107. In other words, the side cover body 91 can be selectively switched between the first state and the second state based on the replacement of the U-shaped pin 141. For example, the side cover body 91 can be switched from the first state to the second state simply by replacing the U-shaped pin 141 with the side cover body 91 lifted to the upper limit position (including the approximately upper limit position).

[0080] In the above embodiments, the holding position (fixed position) in the second state is the same as (including approximately the same as) the upper limit position in the first state, but the present invention is not limited to this and may be lower than the upper limit position, or may be a position where the side cover body 91 in the second state does not overlap with the attachment (member operated by the worker when replacing the claws) 49 in a side view (a position where the side cover body is located above the attachment for the claws of the embankment body). The holding position may also be, for example, higher than the upper limit position.

[0081] Furthermore, the configuration is not limited to having two positioning portions, i.e., for example, the first positioning portion 106 and the second positioning portion 107, but may be a configuration having only one positioning portion (the first positioning portion 106 or the second positioning portion 107), for example.

[0082] Furthermore, the side cover body and the positioning body are not limited to being separate bodies, and may be configured such that a positioning portion such as a hole is integrally formed in a part of the side cover body.

[0083] Furthermore, the liquid supplying means may be a means for supplying a chemical (liquid) such as a liquid herbicide or a chemical solution for hardening soil by spraying it onto the soil or working means.

[0084] Furthermore, the tank of the liquid supply means is not limited to a configuration in which the entire tank is located below the center of the top pin, and may be configured, for example, such that a part of the tank (for example, an opening for putting liquid into the tank) is located below the center of the top pin. Note that the liquid supply means is not necessarily required, and the configuration may not include the liquid supply means.

[0085] Furthermore, the ridge applicator may be of a return type that is capable of performing return work in the corners of a field. [Explanation of symbols]

[0086] 1 Ridge painting machine 36 Embankment 37 Ridge forming body 50 Side cover means 91 Side cover body 92 Control unit 96 Positioning body which is a positioning part 106 First positioning part 107 Second positioning part 110 Support body which is a supporting part 111,112 Link member 116 Lower limit control engagement part 117 Upper limit regulation engagement part 118 Holding engagement part

Claims

1. The embankment is made by tilling the soil, A ridge forming body that compacts the soil to form a ridge; and a side cover means for covering the sides of the embankment. The side cover means is a side cover body that is switchable between a first state in which the side cover body is movable between an upper limit position and a lower limit position, and a second state in which the side cover body is held in a holding position in which maintenance work on the embankment body can be performed; A support portion for supporting the side cover body, The side cover body is switchable between the first state and the second state based on an operation of an operating body, The support portion is a lower limit restricting engagement portion that restricts the side cover body from moving downward below the lower limit position by engaging with the operating body; an upper limit restriction engagement portion that restricts the side cover body from moving upward beyond the upper limit position by engaging with the operating body; a retaining engagement portion that, by engaging with the operating body, restricts at least downward movement of the side cover body and retains the side cover body at the retaining position; A ridge coating machine characterized by the above.

2. The embankment is made by tilling the soil, A ridge forming body that compacts the soil to form a ridge; and a side cover means for covering the sides of the embankment. The side cover means is a side cover body that is switchable between a first state in which the side cover body is movable between an upper limit position and a lower limit position, and a second state in which the side cover body is held in a holding position in which maintenance work on the embankment body can be performed; A support portion for supporting the side cover body, The side cover body is switchable between the first state and the second state based on an operation of an operating body, The support portion has upper and lower link members that are rotatable in the vertical direction, The upper link member of the upper and lower link members is a lower limit restricting engagement portion that restricts the side cover body from moving downward below the lower limit position by engaging with the operating body; an upper limit restriction engagement portion that restricts the side cover body from moving upward beyond the upper limit position by engaging with the operating body; a retaining engagement portion that, by engaging with the operating body, restricts at least downward movement of the side cover body and retains the side cover body at the retaining position. A ridge coating machine characterized by the above.

3. The embankment is made by tilling the soil, A ridge forming body that compacts the soil to form a ridge; and a side cover means for covering the sides of the embankment. The side cover means is a side cover body that is switchable between a first state in which the side cover body is movable between an upper limit position and a lower limit position, and a second state in which the side cover body is held in a holding position in which maintenance work on the embankment body can be performed; A support portion for supporting the side cover body, The side cover body is switchable between the first state and the second state based on an operation of an operating body, The support portion has upper and lower link members that are rotatable in the vertical direction, The upper link member of the upper and lower link members is a lower limit restricting engagement portion that restricts the side cover body from moving downward below the lower limit position by engaging with the operating body; a retaining engagement portion that, by engaging with the operating body, restricts at least downward movement of the side cover body and retains the side cover body at the retaining position; A ridge coating machine characterized by the above.

4. The side cover means has a positioning portion for positioning the operation body, The positioning portion is a first positioning unit that positions the operating body at a first position corresponding to a first state; and a second positioning portion for positioning the operation body at a second position corresponding to a second state.

4. The ridge coating machine according to claim 1,

5. The support portion has upper and lower link members that are rotatable in the up-down direction, The upper link member of the upper and lower link members is provided with a lower limit restricting engagement portion, an upper limit restricting engagement portion and a retaining engagement portion.

2. The ridge coating machine according to claim 1.

6. The holding position in the second state in which the side cover body is held is the same as the upper limit position in the first state.

6. The ridge coating machine according to claim 1,

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