JP2020198891A - Work machine - Google Patents

Abstract

To provide a work machine capable of improving finishing performance and land-leveling performance of the work machine as compared with a conventional work machine.SOLUTION: A work machine 100 mounted on a rear part of a travelling machine body 650 that advances accompanying the forward travelling of the travelling machine body while rotating a tilling rotor, and tills a farm field includes: a shield cover 23 for covering an upper part of the tilling rotor; a first land levelling body 21 provided to the rear end part of the shield cover so as to be vertically rotatable; a second land levelling body 22 provided to the rear end part of the first land levelling body so as to be vertically rotatable; and a vibration part 50 for vibrating the second land levelling body.SELECTED DRAWING: Figure 1

Description

The present invention relates to a working machine which is attached to the rear part of a traveling machine and advances in a field as the traveling machine moves forward while rotating a tilling rotor.

In Patent Document 1, a horizontally long member is arranged inside the first leveling body, and vertically long members are attached to the horizontally long member at predetermined intervals. The rake composed of these vertically elongated members rotates in the vertical direction around the center axis of rotation to vibrate in the front-rear direction, embedding impurities in the cultivated soil under the surface of the field and crushing the soil mass in the cultivated soil. The technology is disclosed.

Patent Document 2 discloses a configuration in which a power transmission member is reciprocated in the vertical direction by the power of a prime mover to vibrate the pressing substrate up and down to level the nursery surface.

Patent Document 3 describes a working machine connected to the rear part of a propulsion machine such as a tractor, in which a crank and a connecting rod are attached to a rotating shaft rotated by a groove pulley, and the connecting rod hits a ground leveling body. A structure is disclosed in which the ground leveling body crushes the soil mass and proceeds.

Japanese Unexamined Patent Publication No. 2006-254748 Japanese Unexamined Patent Publication No. 2008-22807 Jikken Sho 47-32247

However, in the invention described in Patent Document 1, since the rake vibrates inside the first leveling body, improvement of the embedding performance by the rake can be expected, but from the viewpoint of the leveling property of the field, the vibrating body is formed in the second leveling body. A configuration that is affected by the vibration of is desired.

Further, in the invention described in Patent Document 2, it is desired that the vibration of the pressing substrate is limited to the vertical direction, and the structure is not limited to that direction from the viewpoint of the leveling property of the field.

Further, in the invention described in Patent Document 3, although the ground preparation plate repeats a horizontal state and an inclined state due to the rotation of the groove pulley and the crank, a configuration more efficient than the rotation of the groove pulley and the crank is desired.

The problems of any of the documents mentioned above also affect the finish and leveling of the working machine.

In view of the above circumstances, an object of the present invention is to provide a working machine capable of improving the finishability and leveling property of the working machine as compared with the conventional case.

According to the present invention, the work machine is attached to the rear part of the traveling machine and advances to cultivate the field as the traveling machine moves forward while rotating the tilling rotor, and is connected to the rear part of the traveling machine. A work machine provided with a frame, a ground leveling body provided at the rear part of the frame and rotatably supported with respect to the frame to level the field, and a vibrating part provided on the ground leveling body. Is provided.

According to the present invention, the finishability and leveling property of the working machine are improved as compared with the conventional case.

It is a perspective view which shows the work machine which concerns on 1st Embodiment of this invention, and the traveling machine body which pulls a work machine. It is a side view of a working machine. It is an enlarged perspective view of a vibrating part. It is sectional drawing which saw the structure of FIG. 3 from the vertical upper side. It is a perspective view of the work machine which concerns on 2nd Embodiment. It is a perspective view of the work machine which concerns on 3rd Embodiment. It is a perspective view of the work machine which concerns on 4th Embodiment. It is a perspective view of the work machine which concerns on 5th Embodiment.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. The embodiments shown below are examples of embodiments of the present invention, and the present invention is not limited to these embodiments. In the drawings referred to in the present embodiment, the same parts or parts having the same functions may be designated by the same reference numerals or similar reference numerals, and the repeated description thereof may be omitted. Further, in the following description, with respect to the members having the same function, the subscript R may be used for the member on the right side in the traveling direction, and the subscript L may be used for the member on the left side in the traveling direction.

Further, for convenience of explanation, the terms front and rear will be used, but the front indicates the direction of the traveling machine 650 for pulling the working machine 100 with respect to the working machine 100, and the rear indicates the direction of the working machine 100 with respect to the traveling machine 650. Shown.

The working machine 100 according to the embodiment of the present invention is connected to the rear part of a traveling machine 650 such as a tractor like a tilling work machine or a puddling work machine, and cultivates or stirs the soil by rotating the tilling claw 35. It is a working machine. In the embodiment, the configuration of the present invention will be described using a shaving work machine as an example of the working machine 100, but the working machine according to the present invention may be any one used for the shaving work, and the tilling work other than the shaving work machine. It may be a machine or a work machine other than these.

(First Embodiment)
FIG. 1 is a perspective view showing a working machine 100 according to a first embodiment of the present invention and a traveling machine body 650 for pulling the working machine 100. FIG. 2 is a side view of the working machine 100. The work machine 100 is mounted on the rear part of the traveling machine body 650. The working machine 100 advances along with the forward traveling of the traveling machine body 650 while rotating the tilling rotor 30 (see FIG. 2) to cultivate the field 65. The working machine 100 has a three-divided structure including a central working part (working machine main body) 100C, a left working part (left extension working body) 100L, and a right working part (right extension working body) 100R. The central working portion 100C is arranged in the central portion of the working machine 100. The left working portion 100L and the right working portion 100R are rotatably attached to both left and right ends of the central working portion 100C in the vertical direction.

[Structure of central work unit 100C]
The central work unit 100C includes a switching unit 8 for switching work, a top mast 11, a lower link connecting unit 12, an input shaft 13, a transmission frame 15, a support frame 16, a tilling rotor 30, and a shield cover. It includes 23, a first leveling body 21 (sometimes called an “apron”), a second leveling body 22 (sometimes called a “leveler”), and a link mechanism unit 26. The switching unit 8 rotates the second ground leveling body 22 downward. In this example, the switching unit 8 includes a motor and a link mechanism.

The top mast 11 and the lower link connecting portion 12 are provided at the front central portion and the front left and right two locations of the central working portion 100C, respectively. The top mast 11 and the lower link connecting portions 12 provided at the two left and right positions are connected to the top link of the traveling machine body 650 and the lower links (three-point link connecting mechanism) provided at the two left and right positions, respectively. The work machine 100 is mounted on the front part of the machine body having a main frame extending in the left-right direction so as to be able to move up and down with respect to the rear part of the traveling machine body 650. The working machine 100 and the traveling machine 650 may be connected via an auto hitch frame mounted on the three-point link mechanism of the traveling machine 650.

The input shaft 13 is housed in a gearbox 14 provided in the front central portion of the central working portion 100C and projects forward. Power is transmitted to the input shaft 13 from the PTO (Power Take Off) shaft of the traveling machine body 650 via a universal joint or the like.

The frames 15 to 19 are connected to the rear portion of the traveling machine body 650, and have the above-mentioned transmission frame 15, the support frame 16, and the side plate frames 17, 18, and 19. Of these, the transmission frame 15 and the support frame 16 also serve as the main body frame and extend horizontally on both the left and right sides of the gearbox 14. The transmission frame 15 has a transmission shaft (not shown) inside. The support frame 16 may be hollow without incorporating the transmission shaft. A chain transmission case 6 is vertically installed at the side end of the transmission frame 15, and a side plate frame 19 is vertically installed at the side end of the support frame 16 so as to face the chain transmission case 6.

The tilling rotor 30 includes a rotary shaft (not shown) and a plurality of tilling claws 35 (see FIG. 2). The rotary shaft is mounted between the lower end of the chain transmission case 6 and the lower end of the side plate frame 19. The plurality of tilling claws 35 are detachably attached around the axis of the rotary shaft. The power transmitted from the traveling machine body 650 to the input shaft 13 is changed in the gearbox 14, the transmission shaft is rotated, and the rotary shaft is rotationally driven via the chain transmission case 6, and the tillage rotor 30 (see FIG. 2). Is configured to rotate in a predetermined direction to perform tilling work. The rotary shaft may include a mounting flange and a mounting holder, and the plurality of tilling claws 35 may be detachably attached to the mounting flange or the mounting holder.

The shield cover 23 covers the upper part of the tillage rotor 30. In the present embodiment, the leveling body 20 includes a first leveling body 21 and a second leveling body 22. The ground leveling body 20 is provided at the rear part of the frames 15 to 19 and is supported so as to be vertically rotatable with respect to the frames 15 to 19 to level the field 65.

The first leveling body 21 is rotatably attached to the rear end portion of the shield cover 23 in the vertical direction, and the rear side extends diagonally downward. The first leveling body 21 covers the tilling claw 35 of the tilling rotor 30. The cultivated ground is leveled flat by the rear end of the first leveling body 21.

The second leveling body 22 is rotatably attached to the rear end portion of the first leveling body 21 in the vertical direction. The second leveling body 22 prepares the field 65 together with the first leveling body 21. The cultivated ground of the field 65 is further leveled by the second leveling body 22. Conventionally, the second leveling body 22 statically strokes the surface of the field after leveling, but in the present embodiment, the second leveling body 22 also has a function of vibrating.

An extension leveling body 34 is provided on one side and the other side of the body width direction M of the second leveling body 22. The extension leveling body 34 has an extension leveling body 34R extending to the right from the side plate frame 18 and an extension leveling body 34L extending to the left from the side plate frame 17.

One end of the link mechanism portion 26 is connected to the rear portion of the gearbox 14, and the other end portion is connected to the upper surface of the second ground leveling body 22. The link mechanism portion 26 is movable in the vertical direction as the second ground leveling body 22 rotates in the vertical direction. In the present embodiment, the link mechanism portion 26 is composed of a swing arm 27 and a connecting rod 28.

One end of the swing arm 27 is rotatably connected to the rear portion of the gearbox 14, and the other end extends rearward so that the swing arm 27 can swing in the vertical direction. Here, one end of the swing arm 27 is rotatably connected to the rear portion of the gearbox 14 with a shaft portion extending in the lateral direction as a rotation fulcrum.

The connecting rod 28 is connected between the other end of the swing arm 27 and the upper surface of the second leveling body 22. That is, the swing arm 27 is connected to the second leveling body 22 via the connecting rod 28. Both ends of the connecting rod 28 are rotatably connected to the swing arm 27 and the second leveling body 22. Therefore, when the second ground leveling body 22 rotates in the vertical direction, the swing arm 27 rotates in the vertical direction with the shaft portion as a rotation fulcrum via the connecting rod 28.

The left receiving member 56L and the right receiving member 56R are provided in the central working portion 100C. The receiving member 56 regulates the downward movement of the rod portion by contacting the left and right working portions with the rod portion in the folded state.

FIG. 3 is an enlarged perspective view of the vibrating portion 50. FIG. 4 corresponds to a cross-sectional view of the configuration of FIG. 3 as viewed from above. In the present embodiment, the working machine 100 has a vibrating portion 50 that vibrates mainly the second leveling body 22 (see FIG. 1) of the first leveling body 21 and the second leveling body 22. The vibrating portion 50 includes a box portion 51, a first link 52, and a disk portion 200e. The box portion 51 is arranged next to the gear box 14 in the body width direction M. The box portion 51 is supported by the support frame 16.

Inside the box portion 51, a sprocket 200a that can rotate around the rotating shaft 200X, a sprocket 200b that can rotate around the rotating shaft 200Y, and a chain 200c suspended from the sprocket 200a and the sprocket 200b are arranged. .. The sprocket 200a is provided with a clutch 200d. The disk portion 200e is provided with an eccentric shaft 200Z at an eccentric position eccentric from the center of rotation of the disk portion 200e. Further, the connecting rod 28 is provided with a support shaft 10X.

On the other hand, a hole 20a is provided on one end side of the first link 52, and a hole 20b is provided on the other end side of the first link 52.

An eccentric shaft 200Z is inserted through the hole 20a of the first link 52. Further, a support shaft 10X is inserted through the hole 20b of the first link 52. When the rotating shaft 200Y rotates, the sprocket 200b, the chain 200c, and the sprocket 200a are accelerated and rotated. When the sprocket 200a and the disk portion 200e rotate around the rotation shaft 200X, the eccentric shaft 200Z rotates around the rotation shaft 200X, and the first link 52 swings up and down and back and forth.

Then, the connecting rod 28 vibrates up and down and back and forth, and by this operation, the second leveling body 22 vibrates with respect to the first leveling body 21 and swings around the leveler rotation center 31 (see FIG. 1). For this reason, the second ground leveling body 22 not only vibrates up and down, but also has improved stirring and burying performance.

In the present embodiment, the vibration of the second leveling body 22 causes not only the vibration of the muddy water inside the second leveling body 22 but also the vibration of the muddy water outside the second leveling body 22. As a result, the area of muddy water vibrated by the vibration of the second leveling body 22 becomes large.

Further, when the vibrating portion 50 described above vibrates and strikes the second ground leveling body 22, the following actions occur. (1) Rice plants, soil lumps, etc. are buried in the mud, and the mud floats on the surface. Then, the rice straw and soil mass that could not be crushed by the tillage claw 35, and the rice straw and soil mass that could not be completely buried by the rake can be buried in the muddy water (improvement of burial property).

Further, (2) when the fine vibration is applied to the field 65, the mud discharges the contained air, and the surface of the field 65 is patted. In particular, due to the discharge of air in the mud, the surface of the field 65 is less likely to have irregularities over time, and the surface of the field 65 is beautifully finished (improved flatness).

In the above-described example, the first link 52 is used to indirectly vibrate the second leveling body 22 via existing parts such as the swing arm 27 and the connecting rod 28, but the first link 52 is used. The second ground leveling body 22 may be vibrated directly.

(Second Embodiment)
FIG. 5 is a perspective view of the working machine 200 according to the second embodiment. The working machine 200 of the second embodiment is different from the configuration of the first embodiment in that the vibrating portion 60 is directly attached to the surface of the second leveling body 22 and vibrates the second leveling body 22.

As shown in FIG. 5, the vibrating unit 60 includes a vibrating body 600 and a vibrating body support unit 601. The vibrating body support portion 601 has a hole portion 601a and a mounting portion 601b. The vibrating body 600 is fitted in the hole 601a, and the mounting portion 601b is mounted on the second leveling body 22.

(Third Embodiment)
FIG. 6 is a perspective view of the working machine 300 according to the third embodiment. In the work machine 300 of the third embodiment, the vibrating portion 70 vibrates by expanding and contracting between the first leveling body 21 and the second leveling body 22, causing the second leveling body 22 to vibrate up and down and the second leveling body 22. 1 The ground leveling body 21 is also different from the configuration of the first and second embodiments in that it vibrates up and down.

The vibrating portion 70 includes a supporting portion 72, a lower link 70Y, a vibrating moving member 700, an upper link 70X, and a supporting portion 71.

The support portion 72 is fixed to the second leveling body 22 and has a shaft 72X along the body width direction M. The lower link 70Y has a hole 70b at the end along the body width direction M, and the shaft 72X described above is inserted into the hole 70b. Therefore, the lower link 70Y is configured to be rotatable around the shaft 72X.

The support portion 71 is fixed to the first leveling body 21 and has a shaft 71X along the body width direction M. The upper link 70X has a hole 70a at the end along the width direction M of the machine body, and the shaft 71X described above is inserted into the hole 70a. Therefore, the upper link 70X is configured to be rotatable about the shaft 71X.

The vibration moving member 700 is formed in a tubular shape so as to include the lower link 70Y and the upper link 70X described above. Here, the vibration moving member 700 is fixed toward the lower link 70Y, and the vibration moving member 700 is configured to be movable along the longitudinal direction of the upper link 70X. The vibration moving member 700 vibrates up and down along the upper link 70X, so that the second ground leveling body 22 vibrates up and down.

(Fourth Embodiment)
FIG. 7 is a perspective view of the working machine 400 according to the fourth embodiment. In the vibrating unit 80 of the fourth embodiment, the rotating body 800 is mainly attached to the first leveling body 21, and the rotating body 800 is partially connected to the second leveling body 22 to be connected to the first leveling body 21. It differs from the configuration of the first embodiment in that the second ground leveling body 22 is made to vibrate together.

The vibrating portion 80 includes a support portion 72, a second link 81, a rotating body 800, and a support portion 801. The support portion 72 is fixed to the second leveling body 22 and has a shaft 72X along the body width direction M.

The second link 81 is formed with a hole 81a along the machine width direction M at one end and a hole 81b along the machine width direction M at the other end. The shaft 72X is inserted into the hole 81b. Therefore, the second link 81 is configured to be rotatable with respect to the second leveling body 22.

The rotating body 800 has a rotating shaft 800X along the body width direction M. A rotating plate 800a is fixed to the rotating shaft 800X. The rotary plate 800a is provided with a crankshaft 800b along the body width direction M at a position eccentric from the center of rotation. Then, the crankshaft 800b is inserted into the hole portion 81a of the second link 81 described above.

The support portion 801 has a hole portion 801a. The rotating body 800 is fitted into the hole 801a. The support portion 801 is attached to the first leveling body 21 while supporting the rotating body 800.

When the rotating shaft 800X of the rotating body 800 rotates, the rotating plate 800a rotates. Then, the hole 81a of the second link 81 rotates about the rotation shaft 800X, so that the second link 81 swings up and down. As a result, the second leveling body 22 connected to the second link 81 vibrates up and down.

(Fifth Embodiment)
FIG. 8 is a perspective view of the working machine 500 according to the fifth embodiment. The working machine 500 of the fifth embodiment is different from the configuration of the first embodiment in that the vibration of the vibrating portion 90 is configured to be generated by the gear 900.

The vibrating portion 90 includes a support portion 72, a third link 91, and a gear 900. The support portion 72 has a shaft 72X along the body width direction M as described above.

The third link 91 has a hole 91a along the machine width direction M at one end and a hole 91b along the machine width direction M at the other end. The shaft 72X is inserted into the hole 91b. The shaft 900a of the gear 900 is inserted into the hole 91a of the third link 91. Further, the shaft 900a of the gear 900 is rotatably supported by an end portion in the width direction of the first leveling body 21.

The gear 900 has a shaft 900a and a plate portion 900b. The gear 900 is arranged outside the body width direction M of the second leveling body 22 and the first leveling body 21.

According to any of the configurations of Examples 1 to 5, regarding the "finishing property" and "land leveling property" of the field, (A) the appearance is beautiful and gives a good impression, and (B) it is good for agricultural work after the next step. , Can be in the desired state. The details will be described below.

(A) The appearance is beautiful and gives a good impression: (1) No clay lumps or stones, invisible, (2) Smooth surface, (3) Uniform and uniform appearance (in the field) The exhaust of air on the surface is promoted, and the surface of the field is beautifully finished (improved uniformity), (4) there is no puddle, there is no unevenness, it looks small, (5) straw and rice plants are not floating on the surface, it looks It seems that there is no such thing (straw, rice stock, soil mass, etc. are buried in the mud (improved burial property)).

(B) The desirable state for agricultural work after the next process is that the surface is "toro-toro" and water and soil / mud are sufficiently mixed and dissolved.

When the second ground leveling body 22 is vibrated, the following points are good. (1) Soil and water near the vibrating surface dissolve and mix well, (2) Mixing reduces soil mass and dirt near the surface, (3) Mixing smoothes the surface, (4) ) By mixing, it looks even and uniform.

Further, when the second ground leveling body 22 vibrates, the fluidity of soil and water is increased by the vibration (5), and the unevenness is filled and reduced. (6) Floating straw and rice plants tend to sink.

14; Gearbox, 15: Transmission frame, 16; Support frame, 17; Side plate frame, 18: Side plate frame, 19; Side plate frame, 20; Ground leveling body, 21; First ground leveling body, 22; Second ground leveling body, 23 Shield cover, 50: vibrating part, 52: first link, 51a: one end, 51b: other end, 55: gear, 60: vibrating part, 65: field, 70: vibrating part, 70a: hole part, 70b : Hole part, 70X: Upper link, 70Y: Lower link, 71: Support part, 72: Support part, 80: Vibration part, 80a: Plate, 81: Second link, 81a: Hole part, 81b: Hole part, 90: Vibration part, 90a: Rotating part, 91: Third link, 91a: Hole part, 91b: Hole part, 100 working machine, 650: Traveling machine body, 700: Vibration moving member, 800: Rotating body, 800a: Rotating plate , 800b: Crank shaft, 800X: Rotating shaft, 900: Gear, 900a: Shaft, 900b: Plate, K: Rotating direction, M: Aircraft width direction

Claims (6)

It is a work machine that is attached to the rear part of the traveling machine and advances to cultivate the field as the traveling machine moves forward while rotating the tilling rotor.
A shield cover that covers the upper part of the tillage rotor,
A first leveling body rotatably provided in the vertical direction at the rear end of the shield cover,
A second leveling body rotatably provided in the vertical direction at the rear end of the first leveling body,
The vibrating part that vibrates the second leveling body and
A working machine. The working machine according to claim 1, wherein the vibrating portion is provided directly on the second leveling body and includes a vibrating body that independently vibrates the second leveling body. The vibrating portion has a transmission mechanism for transmitting power from the traveling machine body, one end of which is connected to the transmission mechanism, and the other end of which is directly or indirectly connected to the second leveling body. The working machine according to claim 1, further comprising one link. A gearbox having an input shaft for inputting power from the traveling machine body,
A link mechanism portion provided between the gearbox and the second leveling body, and
With more
The link mechanism portion includes a swing arm having one end connected to the gearbox, and a connecting rod provided between the other end of the swing arm and the second leveling body.
The vibrating portion has a transmission mechanism for transmitting power from the traveling machine body, and a first link having one end connected to the transmission mechanism and the other end connected to the connecting rod. The working machine according to 1. The working machine according to claim 1, wherein the vibrating unit includes a vibrating body that is connected to the first leveling body and the second leveling body and vibrates both the first leveling body and the second leveling body. The work machine according to any one of claims 1 to 5, wherein the work machine is a substitute scraping work machine.

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