Management machine

Abstract

To provide a tending machine that can change a shape of ridge.SOLUTION: A tending machine includes: a tilling claw; a sheet member positioned backward from the tilling claw, spreading at least in a vertical direction and a horizontal direction, and having flexibility; and a ridge-forming part capable of switching between a first attitude relating to a shape of ridge and a second attitude relating to a shape of ridge different from the first attitude.SELECTED DRAWING: Figure 2

Description

Technical Field

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[0001] The present invention relates to a management machine.

Background Art

[0002] Conventionally, various management machines for soil management have been proposed. Some management machines can form ridges from tilled soil (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0009] Hereinafter, a cultivator 100 according to an embodiment of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals and will not be repeated in the description.

[0010] In this embodiment, for ease of understanding, the forward / backward direction X, left / right direction Y, and up / down direction Z may be described. The forward / backward direction X includes the front X1 and rear X2. Front X1 is the direction in which the cultivator 100 moves forward. Rear X2 is the opposite direction of front X1. The left / right direction Y includes the left Y1 and right Y2. Left Y1 is the direction to the left of the front end of the cultivator 100. Right Y2 is the opposite direction of left Y1. The up / down direction Z includes the upward Z1 and downward Z2. Upward Z1 is the vertically upward direction. Downward Z2 is the opposite direction of upward Z1.

[0011] Figure 1 is a perspective view of the cultivator 100 according to the embodiment, viewed from the front right. Figure 2 is a perspective view of the cultivator 100 shown in Figure 1, viewed from the rear left.

[0012] As shown in Figures 1 and 2, the tiller 100 broadly comprises a frame 1, a power source 2, a transmission 3, a transmission mechanism 4, a pair of drive wheels 5, a tilling section 6, an operating section 7, a sheet member 8, and a ridging section 9.

[0013] The power source 2 and the transmission 3 are mounted on frame 1.

[0014] Power source 2 generates power. This power is used to rotate at least the drive wheels 5 and each of the tilling tines 62. In this embodiment, power source 2 is an internal combustion engine located on the upper surface of frame 1.

[0015] The transmission 3 changes the torque and rotational speed of the power from the power source 2 according to user operation via the control unit 7. In this embodiment, the transmission 3 is located at the rear end of the frame 1.

[0016] The transmission mechanism 4 includes a chain and pulleys, and transmits power from the output shaft of the transmission 3 to the wheel axle 51 and the pawl shaft 61.

[0017] The wheel axle 51 is supported at the rear end of the frame 1 and extends along the left-right direction Y. More specifically, the wheel axle 51 is located below the transmission 3 at the rear end of the frame 1. The wheel axle 51 is also rotatably supported in the circumferential direction θ1 of its axis along the left-right direction Y. The wheel axle 51 rotates in the circumferential direction θ1 by power transmitted by the transmission mechanism 4. One and the other of the drive wheels 5 are mechanically connected to the left and right ends of the wheel axle 51. The drive wheels 5 rotate together with the wheel axle 51 in a plane intersecting the wheel axle 51. The direction in which the drive wheels 5 rotate in the circumferential direction θ1 is determined by user operation through the control unit 7. The rotation of the drive wheels 5 causes the tiller 100 to travel forward X1 or backward X2.

[0018] The tilling part 6 has, in addition to the tine shaft 61, a plurality of tilling tines 62 and a rotary cover 63. That is, the control unit 100 includes the tilling tines 62. The tine shaft 61 is positioned rearward and obliquely downward away from the transmission 3. In other words, the tine shaft 61 is located at the rear X2 relative to the wheel shaft 51. At this position, the tine shaft 61 extends along the left-right direction Y. Further, the tine shaft 61 is rotatably supported about the circumferential direction θ2 of the axis along the left-right direction Y. The tine shaft 61 rotates in the circumferential direction θ2 by the power transmitted by the transmission mechanism 4.

[0019] The plurality of tilling tines 62 are detachably fixed at positions on the circumferential surfaces of different tine shafts 61 in the left-right direction Y. Each tilling tine 62 extends while bending from the outer circumferential surface of the tine shaft 61 in the radial direction r1 of the tine shaft 61. Each tilling tine 62 rotates together with the tine shaft 61. As a result, when the control unit 100 is moving forward, it becomes possible to till the soil with the tilling part 6.

[0020] The rotary cover 63 is a member that covers a part of the plurality of tilling tines 62. The rotary cover 63 is provided so as not to contact each rotating tilling tine 62. Specifically, the rotary cover 63 is positioned away from the tine shaft 61 in the radial direction r1 from the locus where the tip of each tilling tine 62 moves in the circumferential direction θ2 of the tine shaft 61. The locus is circular in a plan view from the left-right direction Y. In the embodiment, the rotary cover 63 covers from near the front end to near the rear end through the upper end in the circumferential direction θ2 of the movement locus of each tilling tine 62.

[0021] Hereinafter, a virtual plane that passes through the center of the tine shaft 61 in the left-right direction Y and is parallel to the front-rear direction X will be referred to as the "vertical center plane P01".

[0022] The operation unit 7 is operated by a user (i.e., an operator) for various operations of the control unit 100. The operation unit 7 includes a handle 71, a main clutch lever 72, an accelerator lever 73, an engine switch 74, and a turning lever 75.

[0023] The handle 71 is held in the user's hand. The handle 71 is mounted X2 immediately behind the transmission 3. From this position, the handle 71 extends diagonally upward and rearward from the tilling unit 6.

[0024] The main clutch lever 72 is operated by the user to transmit power from the power source 2 to the wheel axle 51 and the pawl shaft 61, or to disengage power from the wheel axle 51 and the pawl shaft 61. Specifically, when an external force is applied to the main clutch lever 72 by user operation, a clutch (not shown) is engaged. As a result, power from the power source 2 is transmitted to the wheel axle 51 and the pawl shaft 61. On the other hand, when no external force is applied to the main clutch lever 72 by user operation, a clutch (not shown) is disengaged. As a result, power from the power source 2 is not transmitted to the wheel axle 51 and the pawl shaft 61.

[0025] The accelerator lever 73 is operated by the user to adjust the rotational speed of power source 2 (internal combustion engine).

[0026] The engine switch 74 can be switched by the user to one of three positions: start, run, or stop. When the engine switch 74 is moved from the stop position to the start position via the run position, the power source 2 starts. If the power source 2 is to be kept running, the engine switch 74 is moved from the start position to the run position. When the engine switch 74 is moved from the run position to the stop position, the power source 2 stops.

[0027] The turning lever 75 can be switched between a straight-ahead position and a turning position by user operation. In the straight-ahead position, the differential gear (not shown) of the drive wheels 5 is locked. As a result, the straight-line stability of the tiller 100 is improved. On the other hand, in the turning position, the lock on the differential gear is released, resulting in a rotational difference between the left and right drive wheels 5. As a result, the tiller 100 becomes easier to turn.

[0028] The sheet member 8 is made of a flexible material, typically rubber. The sheet member 8 is attached to the rear edge 631 of the rotary cover 63 using a fixing member 632 which includes a plurality of knobs. The sheet member 8 is positioned X2 behind the tilling tines 62 and covers the tilling tines 62 from the rear. This prevents mud from splashing backward due to the rotation of the tilling tines 62. The sheet member 8 extends diagonally downward and rearward from the rear edge 631 and extends at least in the vertical Z direction and the left-right Y direction. In this embodiment, the sheet member 8 extends diagonally downward and rearward and in the left-right Y direction. That is, the sheet member 8 extends in three directions: the front-rear direction X, the left-right Y direction and the up-down Z direction.

[0029] In detail, the sheet member 8 has a first main surface 81 and a second main surface 82. The first main surface 81 faces diagonally upward and rearward and extends at least in the vertical direction Z and the left-right direction Y. The first main surface 81 is an example of a "main surface" in this disclosure.

[0030] In detail, the first main surface 81 has a first side 81A, a second side 81B, a third side 81C, and a fourth side 81D.

[0031] The first side 81A is the upper side and is located along the rear edge 631 of the rotary cover 63. In this embodiment, the first side 81A extends along the left-right direction Y. However, the left and right ends of the first side 81A are curved diagonally downward and rearward. The first side 81A has a shape that is symmetrical with respect to the vertical center plane P01 in the left-right direction.

[0032] The second side 81B and the third side 81C extend roughly in a straight line diagonally downward and backward from the left and right ends of the first side 81A. The lengths of the second side 81B and the third side 81C are approximately the same.

[0033] The fourth side 81D connects the lower ends of the second side 81B and the third side 81C. The fourth side 81D has a wavy or zigzag shape.

[0034] The second main surface 82 faces in the opposite direction to the first main surface 81, that is, diagonally downward and forward. In this embodiment, the second main surface 82 has substantially the same shape as the first main surface 81. The second main surface 82 is substantially parallel to the first main surface 81 and is located a predetermined distance from the first main surface 81 diagonally downward and forward. This predetermined distance is much shorter than each of the first side 81A, the second side 81B, and the third side 81C.

[0035] Figure 3 is a side view of the ridging section 9 shown in Figures 1 and 2. Figure 4 shows the first state of the ridging section 9 shown in Figures 1 to 3. Figure 5 shows the second state of the ridging section 9 shown in Figures 1 to 3.

[0036] As shown in Figures 3 to 5, the ridging unit 9 can be switched by user operation between a first posture (the posture shown in Figure 4) with respect to the shape of the ridges and a second posture (the posture shown in Figure 5) with respect to a different ridge shape from the first posture. A tiller 100 is provided that can change the shape of the ridges (see Figures 6(a) and (b)) using the ridging unit 9.

[0037] As shown in Figures 4 and 5, the ridging unit 9 has a plurality of shafts 91, a plurality of rotating members 92, and at least one fixing device 93 on the first main surface 81 in a portion Y1 to the left of the vertical center surface P01. The first main surface 81 faces diagonally upward and backward. The ridging unit 9 is located on the first main surface 81 and not the second main surface 82, and the fixing device 93 faces the user operating the operation unit 7, making it easy for the user to access the ridging unit 9.

[0038] In this embodiment, the multiple shafts 91 are a first shaft 911 and a second shaft 912. The multiple rotating members 92 are a first rotating member 921 and a second rotating member 922.

[0039] The first shaft 911 and the second shaft 912 each protrude from different positions on the first main surface 81.

[0040] More specifically, the first shaft 911 is provided at a first specific position P11 on the first main surface 81. The first specific position P11 is relatively close to the vertical center plane P01 and the fourth side 81D. More specifically, on the first main surface 81, the first specific position P11 is closer to the vertical center plane P01 than to the second side 81B, and closer to the fourth side 81D than to the first side 81A.

[0041] The first shaft 911 protrudes diagonally upward and rearward from the first specific position P11. That is, the first shaft 911 protrudes in a projection direction T1 away from the second main surface 82, with respect to the first main surface 81. The projection direction T1 is parallel to the normal direction T of the first main surface 81.

[0042] The second shaft 912 is provided at a second specific position P12 on the first main surface 81. The second specific position P12 is relatively close to the second side 81B and the first side 81A. More specifically, on the first main surface 81, the second specific position P12 is close to the second side 81B of the vertical center surface P01 and the second side 81B, and close to the fourth side 81D of the first side 81A and the fourth side 81D.

[0043] The first rotating member 921 and the second rotating member 922 are provided corresponding to the first shaft 911 and the second shaft 912.

[0044] The first rotating member 921 has a first end 921A and a second end 921B. The first end 921A is supported on the first shaft 911 so as to be rotatable around the first shaft 911 along the seat member 8. The second end 921B is displaceable between a first position P21 on the first main surface 81 (see Figure 4) and a second position P22 on the first main surface 81 that is different from the first position P21 (see Figure 5).

[0045] The second rotating member 922 has a third end 922A and a fourth end 922B. The third end 922A is supported by the second shaft 912 so as to be rotatable around the second shaft 912 along the seat member 8. The fourth end 922B is displaceable between a third position P23 on the first main surface 81 (see Figure 4) and a fourth position P24 on the first main surface 81 that is different from the third position P23 (see Figure 5). The third position P23 is approximately the same position as the first position P21. The fourth position P24 is approximately the same position as the second position P22.

[0046] As shown in Figure 4, when the second end 921B is in the first position P21 and the fourth end 922B is in the third position P23, the ridging unit 9 takes the first position. As shown in Figure 5, when the second end 921B is in the second position P22 and the fourth end 922B is in the fourth position P24, the ridging unit 9 takes the second position. With the ridging unit 9, to change the shape of the ridges, it is only necessary to change the positions of the second end 921B and the fourth end 922B. Therefore, the structure of the ridging unit 9 is simplified.

[0047] Next, the first rotating member 921 and the second rotating member 922 will be described in more detail with reference to Figures 3 to 5. Each of the first rotating member 921 and the second rotating member 922 is made of a material having higher rigidity than the sheet member 8. Metal is an example of such a material. Each of the first rotating member 921 and the second rotating member 922 is a flat plate having an arc-shaped planar shape.

[0048] The first rotating member 921 has a through hole 9211 (see Figure 3) located closer to the first end 921A than the second end 921B. The planar shape of the through hole 9211 is circular. The first shaft 911 is inserted through the through hole 9211. A thread is formed on the circumferential surface of the first shaft 911. In this state, a washer 9212 (see Figure 3) with a larger diameter than the through hole 9211 is inserted through the protruding end of the first shaft 911. The washer 9212 is then fixed to the first shaft 911 by a nut 9213. As a result, the first rotating member 921 is rotatable around the axis of the first shaft 911 and does not fall off the first shaft 911. The first rotating member 921 has a through hole 9214 located closer to the second end 921B than the first end 921A than the second end 921B. The planar shape of the through-hole 9214 is an elongated oval curved in an arc.

[0049] The second rotating member 922 has a through hole 9221 located closer to the third end 922A than the fourth end 922B. The planar shape of the through hole 9221 is circular. The second shaft 912 is inserted through the through hole 9221. A thread is formed on the circumferential surface of the second shaft 912. In this state, a washer 9222 (see Figure 3), which has a larger diameter than the through hole 9221, is inserted through the protruding end of the second shaft 912. The washer 9222 is then fixed to the second shaft 912 by a nut 9223. The second rotating member 922 has a through hole 9224 located closer to the fourth end 922B than the third end 922A than the fourth end 922B. The planar shape of the through hole 9224 is an oblong curved in an arc shape.

[0050] The fixing device 93 secures the second end 921B to the first position P21 and the second position P22, and the fourth end 922B to the third position P23 and the fourth position P24. The fixing device 93 makes it difficult for the positions of the first rotating member 921 and the second rotating member 922 to change while the tiller 100 is making ridges. As a result, the shape of the ridges does not vary greatly in the length direction.

[0051] In detail, the fastener 93 includes a thumb screw 931 and a nut 932. The threaded portion of the thumb screw 931 is inserted through both the through holes 9214 and 9224. The nut 932 is then screwed onto the threaded portion of the thumb screw 931 protruding from the first and second rotating members 921 and 922, respectively, fixing the first and second rotating members 921 and 922 between the thumb screw (female thread) 931 and the bolt (male thread) 932. This allows the ridging unit 9 to assume either the first or second position.

[0052] The first rotating member 921 and the second rotating member 922 are positioned closer to the imaginary line L01 connecting the first shaft 911 and the second shaft 912 when the ridging section 9 is in the first position than when it is in the second position. That is, the first position P21 and the third position P23 are closer to the imaginary line L01 than the second position P22 and the fourth position P24. This makes it possible to make the slope surface of the rib planar (see Figure 6(a)) or curved (see Figure 6(b)).

[0053] The ridging section 9 may be provided not only on the left side of the sheet member 8, but also on the right side of the sheet member 8. That is, the cultivator 100 has one ridging section 9 on each of the left and right sides of the sheet member 8. The configuration of the right-side ridging section 9 is symmetrical to the left-side ridging section 9 with respect to the vertical center plane P01. Therefore, a detailed explanation of the right-side ridging section 9 will be omitted. With this configuration, ridges are formed on both the left and right sides as the cultivator 100 moves forward. Therefore, ridging can be done efficiently.

[0054] Furthermore, as shown in Figure 2, the tiller 100 is further equipped with a tail wheel 94. The tail wheel 94 is rotatable around an axis along the left-right direction Y at a ridging position located away from the first main surface 81 in the protruding direction T1. The tail wheel 94 can be moved to a different tilling position (the position shown in Figures 4 and 5) during tilling operations.

[0055] When performing furrowing work with the tiller 100, the user moves the tail wheel 94 to the furrowing position (see Figure 2). The user also sets each furrowing unit 9 to either the first or second position. In this state, the user drives the tiller 100 over tilled soil D01. As a result, when each furrowing unit 9 is in the first position, furrows D11 (see solid line) with generally flat slopes are formed in the soil D01. On the other hand, when each furrowing unit 9 is in the second position, furrows D12 (see solid line) with generally arc-shaped bulges are formed in the soil D01.

[0056] Embodiments of the present disclosure have been described above with reference to the drawings. However, the present disclosure is not limited to the embodiments described above, and can be implemented in various forms without departing from its essence. Furthermore, the multiple components disclosed in the above embodiments can be modified as appropriate. For example, some components from all the components shown in one embodiment may be added to the components of another embodiment, or some components from all the components shown in one embodiment may be removed from the embodiment.

[0057] Furthermore, the drawings schematically show each component in order to facilitate understanding of this disclosure, and the thickness, length, number, spacing, etc. of each component shown may differ from the actual dimensions due to the convenience of drawing creation. Also, the configuration of each component shown in the above embodiments is merely an example and is not particularly limiting, and it goes without saying that various modifications are possible within the scope that does not substantially deviate from the effects of this disclosure.

[0058] Power source 2 is not limited to an internal combustion engine; it may also be an electric motor.

[0059] The fourth side 81D is not limited to a wavy or zigzag shape; for example, it may be a straight line.

[0060] In the above embodiment, each ridging unit 9 was equipped with a first rotating member 921 and a second rotating member 922. However, the embodiment is not limited to this, and each ridging unit 9 may be composed of a single rotating member 92 or three or more rotating members 92.

[0061] In the above embodiment, each rotating member 92 had an arc-shaped planar shape. However, the embodiment is not limited to this, and each rotating member 92 may have a rectangular planar shape.

[0062] This application discloses the following notes. These notes are not intended to limit the present invention.

[0063] (Note 1) Tillage tines, A sheet member located behind the aforementioned tilling tines, extending at least vertically and horizontally, and having flexibility, A ridging unit that can switch between a first posture regarding the shape of the ridges and a second posture regarding a ridge shape different from the first posture. A cultivator equipped with the following features.

[0064] (Note 2) The sheet member has a main surface that extends at least in the vertical direction and the horizontal direction, The aforementioned ridging section is, A shaft protruding from the main surface, A rotating member having a first end and a second end, wherein the first end is supported on the shaft so as to be rotatable around the shaft along the sheet member, and the second end is displaceable between a first position on the main surface and a second position on the main surface different from the first position. It has, The tiller described in Appendix 1, wherein when the second end is in the first position and the second position, the ridging section assumes the first posture and the second posture.

[0065] (Note 3) The tiller according to Appendix 2, wherein the ridging section further has a fixing device for fixing the second end to the first position and the second position.

[0066] (Note 4) The sheet member has a main surface that extends at least in the vertical direction and the horizontal direction, The aforementioned ridging section is, The first shaft and the second shaft protrude from different positions on the main surface, A first rotating member having a first end and a second end, wherein the first end is supported on the first shaft so as to be rotatable around the first shaft along the sheet member, and the second end is displaceable between a first position on the main surface and a second position on the main surface different from the first position. A second pivotable member having a third end and a fourth end, wherein the third end is supported on the second shaft so as to be rotatable around the second shaft along the sheet member, and the fourth end is displaceable between a third position on the main surface and a fourth position on the main surface different from the third position, while overlapping with the second end. A fastener for fixing the second end to the fourth end and It further possesses, When the second end is in the first position and the fourth end is in the third position, the ridging section assumes the first posture. The tiller described in Appendix 1, wherein the ridging section assumes the second posture when the second end is in the second position and the fourth end is in the fourth position.

[0067] (Note 5) The tiller as described in (Appendix 4), wherein the first rotating member and the second rotating member are positioned closer to the imaginary line connecting the first shaft and the second shaft when the ridging section is in the first position than when it is in the second position.

[0068] (Note 6) The cultivator according to Appendix 4 or Appendix 5, wherein the sheet member is provided with one ridging section on each of the left and right sides.

[0069] (Note 7) The main surface is facing diagonally upward and backward, as described in Appendices 2 to 6. [Industrial applicability]

[0070] The present invention is a cultivator and has industrial applicability. [Explanation of symbols]

[0071] 100: Management machine 1: Frame 2:Power source 3: Transmission 4: Transmission mechanism 5: Drive wheels 6: Tillage Department 62: Cultivator tines 7 :Operation section 8: Sheet material 81: First main surface 82: Second main surface 9: Ridge-making section 91: Shaft 911: First shaft 912: Second shaft 92: Rotating member 921: First moving member 922: Second moving member 93: Fixture L01: Virtual line

Claims

1. Tillage tines, A sheet member located behind the aforementioned tilling tines, extending at least vertically and horizontally, and having flexibility, A ridging unit that can switch between a first posture regarding the shape of the ridges and a second posture regarding a ridge shape different from the first posture. Equipped with, The aforementioned ridging section is, Each has a first and second pivotable member, one end of which is fixed to the sheet member and the other end of which is displaceable along one surface of the sheet member. The other ends of the first rotating member and the second rotating member are connected, A tiller that can switch between a first posture and a second posture by displacing the position of the other end of each of the first and second rotating members.

2. The sheet member has a main surface that extends at least in the vertical direction and the horizontal direction, The aforementioned ridging section is, It has a shaft that protrudes from the main surface, Either the first rotating member or the second rotating member has a first end and a second end, the first end is supported on the shaft so as to be rotatable around the shaft along the seat member, and the second end is displaceable between a first position on the main surface and a second position on the main surface different from the first position. The cultivator according to claim 1, wherein when the second end is in the first position and the second position, the furrowing section assumes the first posture and the second posture.

3. The tiller according to claim 2, wherein the ridging section further has a fixing device for fixing the second end to the first position and the second position.

4. Tillage tines, A sheet member located behind the aforementioned tilling tines, extending at least vertically and horizontally, and having flexibility, A ridging unit that can switch between a first posture regarding the shape of the ridges and a second posture regarding a ridge shape different from the first posture. Equipped with, The sheet member has a main surface that extends at least in the vertical direction and the horizontal direction, The aforementioned ridging section is, The first shaft and the second shaft protrude from different positions on the main surface, A first rotating member having a first end and a second end, wherein the first end is supported on the first shaft so as to be rotatable around the first shaft along the sheet member, and the second end is displaceable between a first position on the main surface and a second position on the main surface different from the first position. A second pivotable member having a third end and a fourth end, wherein the third end is supported on the second shaft so as to be rotatable around the second shaft along the sheet member, and the fourth end is displaceable between a third position on the main surface and a fourth position on the main surface that is different from the third position, while overlapping with the second end. A fastener for fixing the second end to the fourth end and It further possesses, When the second end is in the first position and the fourth end is in the third position, the ridging section assumes the first posture. When the second end is in the second position and the fourth end is in the fourth position, the ridging section assumes the second posture, in a tiller.

5. The tiller according to claim 4, wherein the first rotating member and the second rotating member are positioned closer to the imaginary line connecting the first shaft and the second shaft when the ridging section is in the first position than when it is in the second position.

6. The cultivator according to claim 4 or 5, wherein the sheet member is provided with one ridging section on each of the left and right sides.

7. The main surface is facing diagonally upward and backward, according to any one of claims 2 to 5.

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