Management machine

Abstract

To provide an easy-to-use power tiller.SOLUTION: A power tiller comprises a frame, a tillage tine that is attached to the frame in a position below the frame, and a cover that is attached to the frame. The cover can switch between the first state of not covering the tillage tine and the second state of covering the tillage tine in a position below the tillage tine.SELECTED DRAWING: Figure 8

Description

Technical Field

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

Background Art

[0002] Conventionally, various management machines capable of cultivating soil with tilling claws have been proposed. Also, when loading the management machine onto a truck or the like, a case for storing the tilling claws has been proposed so that the loading platform is not damaged by the tilling claws and the sediment adhering to the tilling claws does not adhere to the loading platform (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

[0004] However, the case according to the background art has a problem that it is not integrated with the management machine, so it is inconvenient to use. For example, when loading the management machine onto the loading platform, if the case is in a place separated from the management machine, the operator needs to go to the place where the case is to pick up the case.

[0005] An object of the present invention is to provide a management machine with good usability.

Means for Solving the Problems

[0006] The management machine according to one aspect of the present invention includes a frame, tilling claws attached to the frame below the frame, and a cover attached to the frame. The cover can be changed between a first state in which the tilling claws are not covered and a second state in which the tilling claws are covered below the tilling claws.

Effects of the Invention

[0007] According to the present invention, a user-friendly cultivator can be provided. [Brief explanation of the drawing]

[0008] [Figure 1] This is a perspective view of the management machine according to the embodiment, taken from the front right. [Figure 2] Figure 1 is a perspective view of the tiller shown in Figure 1, taken from the right rear. [Figure 3] Figure 1 is a perspective view of the left wheel and left leg assembly, cover, housing, and right wheel and right leg of the tiller shown. [Figure 4] Figures 1 and 2 are perspective views showing the pulled-out state of the cover of the cultivator. [Figure 5] Figure 4 is an enlarged view of the cover pulled out from the storage compartment (the cover in the pulled-out state). [Figure 6] Figures 1 and 2 are perspective views showing the left and right extended states of the cover of the cultivator. [Figure 7] Figure 6 is an enlarged view of the cover in its left and right unfolded state. [Figure 8] Figures 1 and 2 are perspective views showing the coverage of multiple tilling tines by the cover of the tiller shown. [Figure 9] This is a perspective view of the tiller 100 relating to the first modified example, viewed from the right rear. [Figure 10] This is a perspective view of the cultivator 100 relating to the second modified example, viewed from the right rear. [Modes for carrying out 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 front-rear direction X, the left-right direction Y, and the up-down direction Z may be described. The front-rear direction X includes the front X1 and the rear X2. The front X1 is the direction in which the management machine 100 moves forward. The rear X2 is the opposite direction of the front X1. The left-right direction Y includes the left Y1 and the right Y2. The left Y1 is the direction of the left hand toward the front end of the management machine 100. The right Y2 is the opposite direction of the left Y1. The up-down direction Z includes the upper Z1 and the lower Z2. The upper Z1 is the vertically upward direction. The lower Z2 is the opposite direction of the upper Z1.

[0011] FIG. 1 is a perspective view of the management machine 100 according to the embodiment as viewed from the front right obliquely. FIG. 2 is a perspective view of the management machine 100 shown in FIG. 1 as viewed from the rear right obliquely.

[0012] ※Configuration of Claim 1 As shown in FIGS. 1 and 2, the management machine 100 generally includes a frame 1, a power source 2, a transmission 3 (see FIG. 2), a transmission mechanism 4, a tilling unit 5, a left wheel 6L, a right wheel 6R, a resistance bar 7, a cover 8 (see FIG. 1), and an operation unit 9.

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

[0014] The power source 2 generates power. The power is used to rotate at least the claw shaft 51 of the tilling unit 5. In the embodiment, the power source 2 is an internal combustion engine and is located on the upper surface of the frame 1.

[0015] The transmission 3 changes the torque and rotational speed of the power from the power source 2 according to a user operation through the operation unit 9. In the embodiment, the transmission 3 is located at the rear end of the frame 1 (see FIG. 2).

[0016] The transmission mechanism 4 includes a chain, a pulley, etc., and transmits the power from the output shaft of the transmission 3 to the claw shaft 51. In the embodiment, the transmission mechanism 4 extends generally downward from the lower end of the transmission 3.

[0017] The tilling part 5 has, in addition to the tilling shaft 51, a plurality of tilling claws 52. That is, the control unit 100 includes the tilling claws 52. The tilling shaft 51 is located generally downward and away from the transmission 3. Specifically, the tilling shaft 51 extends linearly in each of the leftward Y1 and rightward Y2 directions from near the lower end of the transmission mechanism 4. That is, the plurality of tilling claws 52 are attached to the frame 1 below the frame 1 via the transmission mechanism 4 and the transmission 3. Also, the tilling shaft 51 is supported by the transmission mechanism 4 so as to be rotatable about the circumferential direction θ1 of the axis along the left-right direction Y. The tilling shaft 51 rotates in the circumferential direction θ1 by the power transmitted by the transmission mechanism 4.

[0018] The plurality of tilling claws 52 are detachably fixed at positions on the circumferential surfaces of different tilling shafts 51 in the left-right direction Y. Each tilling claw 52 extends while bending from the outer peripheral surface of the tilling shaft 51 in the radial direction r1 of the tilling shaft 51. Each tilling claw 52 rotates together with the tilling shaft 51. As a result, it becomes possible to till the soil by the tilling part 5 while the control unit 100 is moving forward.

[0019] Hereinafter, a virtual plane passing through the center of the tilling shaft 51 in the left-right direction Y and parallel to the front-rear direction X will be referred to as the "vertical center plane P01".

[0020] Here, the operation unit 9 will be described. The operation unit 9 is operated by a user (i.e., an operator) for various operations of the control unit 100. The operation unit 9 includes a handle 91, a main clutch lever 92, an accelerator lever 93, and an engine switch 94.

[0021] The handle 91 is gripped by the user's hand. The handle 91 is attached immediately behind X2 of the power source 2. From this position, the handle 91 extends obliquely upward and rearward of the power source 2.

[0022] The main clutch lever 92 is operated by the user to transmit power from the power source 2 to the pawl shaft 51 or to disengage power from the pawl shaft 51. Specifically, when an external force is applied to the main clutch lever 92 by user operation, a clutch (not shown) is engaged. As a result, power from the power source 2 is transmitted to the pawl shaft 51. On the other hand, when no external force is applied to the main clutch lever 92 by user operation, a clutch (not shown) is disengaged. As a result, power from the power source 2 is not transmitted to the pawl shaft 51.

[0023] The accelerator lever 93 is operated by the user to adjust the rotational speed of power source 2 (internal combustion engine).

[0024] The engine switch 94 can be switched to one of three positions by the user: start position, operating position, or stop position. When the engine switch 94 is moved from the stop position to the start position via the operating position, the power source 2 starts. If the power source 2 is to be kept running, the engine switch 94 is moved from the start position to the operating position. When the engine switch 94 is moved from the operating position to the stop position, the power source 2 stops.

[0025] Figure 3 is a perspective view of the left wheel 6L and left leg 61L set, cover 8, housing 83, and right wheel 6R and right leg 61R of the tiller 100 shown in Figure 1.

[0026] As shown in Figures 2 and 3, the tiller 100 further comprises a left leg 61L and a right leg 61R. As shown in Figure 3, the left leg 61L has a base end 611L, a first section 612L, a second section 613L, and a tip 614L. The base end 611L is attached to the lower rear corner of the left side of the transmission 3 (see Figure 2). The first section 612L extends from the base end 611L toward the left Y1. The second section 613L extends from the left end of the first section 612L generally toward downward Z2, passing behind the multiple tilling tines 52 to reach the tip 614L.

[0027] The right leg 61R has a proximal end 611R, a first portion 612R, a second portion 613R, and an distal end 614R. The proximal end 611R, the first portion 612R, the second portion 613R, and the distal end 614R may be symmetrical with respect to the proximal end 611L, the first portion 612L, the second portion 613L, and the distal end 614L in the left-right direction Y, with respect to the longitudinal central plane P01. Therefore, a detailed description of the right leg 61R will be omitted.

[0028] As shown in Figures 2 and 3, the left wheel 6L is attached to the tip 614L of the left leg 61L. Therefore, the left wheel 6L is attached to the frame 1 via the left leg 61L, etc., at a position X2 rearward from the multiple tilling tines 52. The left wheel 6L is rotatable around an axis along the left-right direction Y. The right wheel 6R is attached to the tip 614R of the right leg 61R. Therefore, the right wheel 6R is attached to the frame 1 via the right leg 61R, etc., at a position X2 rearward from the multiple tilling tines 52. The right wheel 6R is rotatable around an axis along the left-right direction Y. It is preferable that the axis of the left wheel 6L and the axis of the right wheel 6R are the same.

[0029] Further details regarding the cover 8 and the housing section 83 will be described later.

[0030] Refer again to Figure 2. As shown in Figure 2, the resistance bar 7 has a base end 71 and a tip end 72. The base end 71 is attached to the rear surface of the transmission 3 (see Figure 2). The resistance bar 7 extends diagonally downward and rearward along the longitudinal center plane P01 from the base end 71 to the tip end 72. The tip end 72 is located diagonally upward and rearward from the left wheel 6L and the right wheel 6R.

[0031] Figure 4 is a perspective view showing the pulled-out state of the cover 8 of the cultivator 100 shown in Figures 1 and 2. Figure 5 is an enlarged view of the cover pulled out from the storage compartment shown in Figure 4 (cover in the pulled-out state).

[0032] As shown in Figures 3 to 5, the housing section 83 is sandwiched between the second sections 613L and 613R and supported by the second sections 613L and 613R. The housing section 83 is a roughly rectangular box that is elongated in the left-right direction Y. That is, the housing section 83 is hollow. The housing section 83 has a front wall 831 that generally faces forward X1. A narrow slit 832 is formed in the front wall 831 along its upper edge in the left-right direction Y. The slit 832 is continuous with the internal space of the housing section 83. The left-right width of the slit 832 is approximately the same as the left-right width of the internal space of the housing section 83.

[0033] The cover 8 is housed in the internal space of the housing section 83. That is, the cover 8 is attached to the frame 1 via the housing section 83, the left leg 61L and the right leg 61R, etc. The cover 8 has a cover body 81 and a second engaging portion 82. The cover body 81 is long and strip-shaped and made of a flexible material such as resin or rubber. When the cover body 81 is housed in the housing section 83 (hereinafter referred to as the "housed state"), only the tip 811 of the cover 8 protrudes from the slit 832 to the outside of the housing section 83 (see Figure 3). A winding mechanism (not shown) for the cover body 81 is provided inside the housing section 83. More specifically, a roll pipe is provided inside the housing section 83 so as to be rotatable around an axis along the left-right direction Y. In the housed state, the base end of the cover body 81 is fixed to the outer circumferential surface of the roll pipe. Specifically, the base end of the cover 8 is positioned behind the multiple tilling tines 52 and is attached to the frame 1 via the housing section 83, left leg 61L, and right leg 61R. The cover body 81 is attached with the outer surface of the roll pipe wound around from the base end to the tip. In other words, in the stored state, the cover body 81 does not cover the multiple tilling tines 52. Therefore, the stored state is an example of the "first state" of this disclosure. In the stored state, the housing section 83 winds up the cover 8 and stores it inside. This allows the long cover body 81 to be stored compactly.

[0034] A spiral spring is attached to the roll pipe. The user holds the tip 811 of the cover body 81 by hand against the spring force of the spiral spring and pulls it out of the housing 83. Alternatively, another user applies a downward force Z2 to the tiller 100, for example, while holding the handle 91. As a result, the tiller 100 can be positioned so that the left wheel 6L, the right wheel 6R, and the resistance rod 7 are in contact with the road surface, and the multiple tilling tines 52 are lifted off the road surface (see Figure 4). Therefore, the user can easily pass the cover body 81, which has been pulled out of the housing 83, between the left wheel 6L and the right wheel 6R and the multiple tilling tines 52, and also between the multiple tilling tines 52 and the road surface at a point Z2 below them.

[0035] Figure 6 is a perspective view showing the left and right extended state of the cover 8 of the cultivator 100 shown in Figures 1 and 2. Figure 7 is an enlarged view of the cover 8 in the left and right extended state shown in Figure 6.

[0036] As is clear from the above, the left end of the housing section 83 is located to the right Y2 of the left end of the multiple tilling tines 52. The right end of the housing section 83 is located to the left Y1 of the right end of the multiple tilling tines 52. Therefore, if the size of the cover body 81 in the left-right direction Y (hereinafter referred to as "left-right width") is the same as the left-right width of the slit 832, the cover body 81 cannot cover all of the tilling tines 52.

[0037] Therefore, as shown in Figures 6 and 7, the width of the cover body 81 is selected to be larger than the distance between the ends of the tilling tines 52 in the left-right direction Y. The cover body 81 is then folded along virtual fold lines L1 and L2 so that its width is less than the width of the slit 832, and then stored in the storage section 83. Here, it is preferable that the thickness of the portion of the cover body 81 along the fold lines L1 and L2 is thinner than the thickness of the other portions of the cover body 81. This makes it easier to fold the cover body 81 along the fold lines L1 and L2.

[0038] The user pulls the tip 811 of the cover 8 out of the housing 83, and then unfolds the folded cover body 81 in the left-right direction Y. In Figures 6 and 7, the left portion 81L of the cover body 81 is shown to the left of the fold line L1 Y1. The right portion 81R of the cover body 81 is shown to the right of the fold line L2 Y2. Furthermore, the central portion 81C of the cover body 81 is shown between the fold lines L1 and L2. In this left-right unfolded state, the right end of the cover body 81 is located to the right Y2 of the right end of the multiple tilling tines 52, and the left end of the cover body 81 is located to the left Y1 of the multiple tilling tines 52. Also, the cover body 81 is continuous between its left and right ends. That is, the cover body 81 does not have through holes except for the second engaging portion 82 formed on the tip 811. This makes it difficult for objects (i.e., soil, etc.) that fall from the tilling tines 52 onto the cover 8 to move outside the cover 8.

[0039] Figure 8 is a perspective view showing the covering state of the multiple tilling tines 52 by the cover 8 of the tiller 100 shown in Figures 1 and 2.

[0040] As shown in Figures 4 to 8, the second engaging portion 82 is a through hole formed in the cover body 81 along the tip 811 of the cover body 81. The second engaging portion 82 has an elongated shape in the left-right direction Y.

[0041] Furthermore, as shown in Figures 4, 6, and 8, the tiller 100 has a first engaging portion 11. The first engaging portion 11 is located X1 forward and Z1 above the plurality of tilling tines 52. In detail, the first engaging portion 11 is attached to the front end of the frame 1. The first engaging portion 11 is generally hook-shaped in a plan view from the left-right direction Y, and the second engaging portion 82 engages with it.

[0042] The user passes the cover body 81 below Z2 the multiple tilling tines 52, then lifts the tip 811 upward Z1 to hook the second engaging portion 82 onto the first engaging portion 11. Generally, there are no structures in front of the multiple tilling tines 52 that would interfere with the work. Therefore, as in the embodiment, if the base end of the cover body 81 is located behind X2 the multiple tilling tines 52 and the first engaging portion 11 is located at the front end of the tiller 100, the work of covering the tilling tines 52 with the cover body 81 is simplified.

[0043] When the second engaging portion 82 engages with the first engaging portion 11, the cover 8 enters a second state in which it covers multiple tilling tines 52 below each of the tines 52 at a position Z2 lower than each of the tines 52. Thus, according to this embodiment, a user-friendly tiller 100 is provided. In particular, because the cover 8 is attached to the frame 1, it can be quickly covered with multiple tilling tines 52 as needed, making it very user-friendly.

[0044] Furthermore, in this embodiment, the left wheel 6L, the right wheel 6R, and the resistance bar 7 make it easier to lift the multiple tilling tines 52 off the road surface. In the second state, the cover body 81 passes between the multiple tilling tines 52 and the left wheel 6L and the right wheel 6R. Therefore, the work of covering the tilling tines 52 with the cover body 81 becomes easier.

[0045] Figure 9 is a perspective view of the tiller 100 according to the first modified example, viewed from the right rear. The tiller 100 shown in Figure 9 differs from the tiller 100 shown in Figures 1 to 8 in that the orientation of the slit 832 formed in the housing section 83 is towards the rear X2. Due to this difference, the cover body 81 covers not only the multiple tilling tines 52 but also the multiple tilling tines 52, the left wheel 6L and the right wheel 6R, and the left wheel 6L and the right wheel 6R, passing below Z2. This makes it possible for the cover body 81 to receive objects falling from the left wheel 6L and the right wheel 6R.

[0046] Figure 10 is a perspective view of the tiller 100 according to the second modified example, viewed from the right rear. As shown in Figure 10, the tiller 100 is equipped with a left fender 12L and a right fender 12R. In addition, the tiller 100 is equipped with a left cover 8L and a right cover 8R in place of the cover 8, and with a left storage section 83L and a right storage section 83R in place of the storage section 83.

[0047] The left fender 12L is a flat plate-shaped member attached to the left side Y1 of the frame 1. The left fender 12L extends at least in the front-rear direction X and left-right direction Y above Z1 some of the left tilling tines 52 of the multiple tilling tines 52. The right fender 12R may be symmetrical to the left fender 12L in the left-right direction Y with respect to the vertical center plane P01. The left fender 12L and the right fender 12R prevent mud from splashing upwards Z1 from the multiple tilling tines 52.

[0048] The left storage section 83L and the right storage section 83R are attached to the rear ends of the left fender 12L and the right fender 12R, respectively, and house the left cover 8L and the right cover 8R, which have the same configuration as the cover 8, in the same manner as the storage section 83.

[0049] Embodiments and modifications of the present disclosure have been described above with reference to the drawings. However, the present disclosure is not limited to the embodiments and modifications described above, and can be implemented in various forms without departing from its essence. Furthermore, the multiple components disclosed in the embodiments and modifications described above can be modified as appropriate. For example, some of the components shown in an embodiment or modification may be deleted from the embodiment or modification.

[0050] 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 or modifications 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.

[0051] In this embodiment, the power source 2 was an internal combustion engine. However, it is not limited to this, and the power source 2 may also be an electric motor.

[0052] In this embodiment, the cover 8 was housed in a storage section 83 and indirectly attached to the frame 1. However, the design is not limited to this, and the storage section 83 is not required. In this case, the cover 8 only needs to be able to be directly attached to the frame 1, for example, in a folded or rolled-up state. The cover 8 also only needs to be unfolded when covering the multiple tilling tines 52.

[0053] In this embodiment, the housing portion 83 was located X2 rearward from the multiple tilling tines 52, and the first engaging portion 11 was located X1 forward from the multiple tilling tines 52. However, the embodiment is not limited to this, and the housing portion 83 may be located X1 forward from the multiple tilling tines 52, and the first engaging portion 11 may be located X2 rearward from the multiple tilling tines 52.

[0054] The tiller 100 may have drive wheels positioned in front of X1 or behind X2 the multiple tilling tines 52.

[0055] This application discloses the following notes. These notes are not intended to limit the present invention.

[0056] (Note 1) Frame and, A plurality of tilling tines attached to the frame below the frame, A cover attached to the frame and Equipped with, A tiller, wherein the cover can be changed between a first state in which it does not cover the plurality of tilling tines and a second state in which it covers the plurality of tilling tines below each of the tines.

[0057] (Note 2) In the second state described above, the left end of the cover is located to the left of the left end of the plurality of tilling tines, In the second state described above, the right end of the cover is located to the right of the right end of the plurality of tilling tines, The cover is continuous between the left end and the right end of the cover, as described in Appendix 1 of the management machine.

[0058] (Note 3) It further comprises a first engaging portion located in front of the plurality of tilling tines, The base end of the cover is attached to the frame at a position rearward from the tilling tines. The cultivator according to Appendix 1 or Appendix 2, wherein the cover has a second engaging portion at the tip of the cover that engages with the first engaging portion.

[0059] (Note 4) The frame is further equipped with wheels mounted at a position rearward of the aforementioned plurality of tilling tines, The cover passes between the tilling tines and the wheels in the second state, as described in any of Appendix 1 to Appendix 3 of the cultivator.

[0060] (Note 5) The frame is further equipped with wheels attached at a position rearward from the tilling tines, The cover is located below the wheels and covers the wheels in the second state, as described in any of Appendix 1 to Appendix 4 of the cultivator.

[0061] (Note 6) The management machine according to any one of the appendices 1 to 5, further comprising a storage section for winding up and storing the aforementioned cover inside. [Industrial applicability]

[0062] The present invention is a cultivator and has industrial applicability. [Explanation of symbols]

[0063] 100: Management machine 1: Frame 11: First engaging part 2:Power source 3: Transmission 4: Transmission mechanism 5: Tillage Department 52: Cultivator tines 6L: Left wheel 6R: Right wheel 7: Resistance rod 8: Cover 82: Second engaging part 83: Containment Unit 8L: Left cover 8R: Right cover 9 :Operation section

Claims

1. Frame and, A plurality of tilling tines attached to the frame below the frame, A cover attached to the frame and Equipped with, The cover can be changed between a first state in which it does not cover the plurality of tilling tines and a second state in which it covers the plurality of tilling tines below each of the tines. In the second state described above, the left end of the cover is located to the left of the left end of the plurality of tilling tines, In the second state described above, the right end of the cover is located to the right of the right end of the plurality of tilling tines, The cover is continuous between the left end and the right end of the cover, and is a cultivator.

2. The cultivator according to claim 1, wherein the cover has a flexible cover body that covers the cultivating tines.

3. A frame and, A plurality of tilling tines attached to the frame below the frame, A cover attached to the frame and Equipped with, The cover can be changed between a first state in which it does not cover the plurality of tilling tines and a second state in which it covers the plurality of tilling tines below each of the tines. It further comprises a first engaging portion located in front of the plurality of tilling tines, The base end of the cover is attached to the frame at a position rearward from the tilling tines. The cover has a second engaging portion at its tip that engages with the first engaging portion, wherein the cover is a cultivator.

4. A frame and, A plurality of tilling tines attached to the frame below the frame, A cover attached to the frame and Equipped with, The cover can be changed between a first state in which it does not cover the plurality of tilling tines and a second state in which it covers the plurality of tilling tines below each of the tines. The frame is further equipped with wheels mounted at a position rearward of the aforementioned plurality of tilling tines, The cover passes between the tilling tines and the wheels in the second state of the tiller.

5. A frame and, A plurality of tilling tines attached to the frame below the frame, A cover attached to the frame and Equipped with, The cover can be changed between a first state in which it does not cover the plurality of tilling tines and a second state in which it covers the plurality of tilling tines below each of the tines. The frame is further equipped with wheels attached at a position rearward from the tilling tines, The cover, in the second state, covers the wheels below them, and is located above them, in the tiller.

6. A frame and, A plurality of tilling tines attached to the frame below the frame, A cover attached to the frame and Equipped with, The cover can be changed between a first state in which it does not cover the plurality of tilling tines and a second state in which it covers the plurality of tilling tines below each of the tines. A cultivator further comprising a storage section for rolling up and storing the aforementioned cover inside.

Images