JP5645204B2 - Pricking machine - Google Patents

Description

  The present invention relates to a scraping work machine.

  2. Description of the Related Art Conventionally, a scraping work machine is known that is connected to the rear portion of a tractor and performs a scraping operation while moving with the tractor. Such a plowing machine is suitable for rice farming by crushing paddy etc. into the soil and leveling it while crushing the paddy soil finely with a plowing rotor provided with many tilling claws. It is to make. For this reason, the scraping work machine is required to efficiently take the scissors or the like ahead in the traveling direction into the working position of the scraping rotor.

  Therefore, for example, in Patent Document 1, the both side surfaces of the side cover provided on the left and right sides of the scraper rotor are rectangular in plan view, and the front end is bent upward and extends obliquely upward. In addition, there is disclosed a scraping work machine including a leveling plate on which a guide surface inclined toward the scraping rotor is formed.

  According to such a scraping work machine, when there is a ridge on the front side in the traveling direction, if the leveling plate moves forward, the heel is forcibly moved along the guide surface in the axial direction of the scraping rotor. It is considered that the amount of wrinkles that are swallowed by the scratching claw or rake of the rotor can be increased.

JP 2005-295907 A (paragraph 0040 to paragraph 0042)

  However, in the scraping work machine described in Patent Document 1, the leveling plate is provided outside the side covers provided on the left and right sides of the scraping rotor, and when the work is performed, the leveling plate is operated from the retracted position. It was necessary to return to the retracted posture from the workable posture when the work was finished by swinging to a possible posture. In the case where the scraping rotor is a foldable type composed of a central scraping rotor disposed at the center in the left-right direction, and a left scraping rotor and a right scraping rotor disposed on the left and right, the left and right working postures are maintained. If the scraper rotor is folded, the left and right ground leveling plates may interfere with each other and may be damaged.

  The present invention has been made in view of the above-described circumstances, and provides a scraping work machine capable of efficiently performing scraping work by taking at least one of the problems as described above as an example. Objective.

In order to solve such a problem, a scraping work machine according to the present invention is provided with a scraping rotor that is mounted on the rear part of a traveling machine body and rotates around a rotation shaft provided in the left-right direction by power transmitted from the traveling machine body. A scraping work machine that performs a scraping operation while traveling along with the travel of the traveling machine body while the scraping rotor rotates, and includes a shield cover that covers the top of the scraping rotor, the shield cover having a center in the left-right direction. It inclines so that it may protrude ahead toward both ends from the side.
Further, the scraping rotor includes a central scraping rotor disposed at the center in the left-right direction, a left scraping rotor disposed on the left side of the central scraping rotor, and a right scraping rotor disposed on the right side of the central scraping rotor. The shield cover comprises a central shield cover that covers the upper portion of the central scraping rotor, a left shield cover that covers the upper portion of the left scraper rotor, and a right shield cover that covers the upper portion of the right scraper rotor, The shield cover is inclined so as to protrude forward from the right end side toward the left end side, and the right shield cover is inclined so as to protrude forward from the left end side toward the right end side. .
The center shield cover is inclined so as to protrude forward from the center side in the left-right direction toward both end sides.
Further, a mudguard is attached to the front side of the shield cover in the traveling direction.

  ADVANTAGE OF THE INVENTION According to this invention, the scraping work machine which can perform a scraping operation | work efficiently can be provided.

It is a perspective view which shows the external appearance of the scraping work machine which concerns on one Embodiment of this invention. It is a top view which shows the external appearance of the scraping work machine which concerns on one Embodiment of this invention. It is a fragmentary sectional view which shows the power transmission system of the scraping work machine which concerns on one Embodiment of this invention. It is a top view which shows the external appearance of the scraping work machine which concerns on other embodiment of this invention.

  Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings. For convenience, the same or corresponding elements may be denoted by the same reference numerals and description thereof may be omitted. Note that the present invention is widely applicable to a scraping work machine that includes a scraping rotor that rotates about a rotating shaft provided in the left-right direction and that advances along with the traveling of the traveling machine body while the scraping rotor rotates. However, here, an example in which the present invention is applied to a folding scraping work machine will be described.

  FIG. 1 is a perspective view from the front side showing the appearance of the cutting work machine 1, and FIG. 2 is a plan view showing the appearance of the cutting work machine 1. FIG. The skimming work machine 1 is connected to the rear part of the traveling machine body 90 such as a tractor by a three-point link coupling mechanism (not shown), and advances along with the forward traveling of the traveling machine body 90 to perform the scraping work. Working machine body 10 disposed at the center in the left-right direction with respect to the direction, and left working body 20L and right working body 20R as extension working machines that are attached to both left and right ends so as to be rotatable in the up-down direction. And a rotary working unit having a three-part structure. In the illustrated example, the width (the length in the left-right direction) of the left working body 20L and the right working body 20R is about half of the width of the work implement main body 10.

  Shaft portions 14 and 14 extending in the front-rear direction are provided at the left and right end portions of the work machine main body 10, and the left work body 20L and the right work body 20R are rotatable up and down about the shaft portions 14 and 14. Is provided. Hydraulic cylinders 19 and 19 are provided between the upper part of the work machine body 10 and the left work body 20L and between the upper part of the work machine body 10 and the right work body 20R, respectively. A storage position where the work body 20L and the right work body 20R are folded above the work machine main body 10, and a deployment position where the left work body 20L and the right work body 20R shown in FIG. Move between.

  The work machine body 10 includes a main frame 11 extending in the left-right direction, and a gear box 13 is provided at the center of the main frame 11 in the left-right direction. The gear box 13 is provided with an input shaft 17 that protrudes forward, and the power from the PTO shaft of the traveling machine body 90 is transmitted to the gear box 13 via a power transmission means such as a universal joint. It is to be transmitted. As shown in FIG. 3, the rear end of the input shaft 17 and the right end portion of the power transmission shaft 15 provided in the main frame 11 are connected within the gear box 13 by, for example, bevel gears 15a and 17a. As a result, the power of the input shaft 17 is transmitted to the power transmission shaft 15.

  A chain case 8 is suspended from the left end of the main frame 11, and a side frame 9 is suspended from the right end. Between the lower part of the chain case 8 and the side frame 9, a scraping rotor 30C having a large number of tilling claws (partially omitted in the drawing) is rotatably supported. The left end portion of the power transmission shaft 15 is inserted into the chain case 8, and an input side sprocket 60 that is fixed to the power transmission shaft 15 and rotates with the power transmission shaft 15 is provided at the left end portion. ing. A chain 68 is hung on the input side sprocket 60, and this chain 68 is hung on an output side sprocket 69 provided at the lower part of the chain case 8 (a part of the chain 68 is omitted in the drawing). The output-side sprocket 69 is connected to the scraping rotor 30C of the work machine body 10, whereby the scraping rotor 30C is configured to rotate in a predetermined direction.

  The left working body 20L and the right working body 20R are respectively provided with side frames 21L and 21R at outer end portions in the unfolded position, and a large number of support parts 23L and 23R provided on the side frames 21L and 21R One end side (outer end at the unfolded position) of the scraping rotors 30L and 30R to which the tilling claws (partially omitted in the drawing) are attached is rotatably supported. The other end side (the inner end side at the unfolded position) of the scraping rotors 30L and 30R is rotatably supported by support frames 25L and 25R provided on the left and right inner sides at the unfolded positions of the left working body 20L and the right working body 20R. The driven clutches 31L and 31R are connected to the end portions thereof. The driven clutches 31L and 31R are disposed closer to the work machine body 10 than the support frames 25L and 25R, respectively.

  The driven clutch 31L of the left working body 20L is coupled to the output side sprocket 69 and meshes with the drive clutch 18 exposed outward (left side) from the chain case 8 at the deployed position. Similarly, the driven clutch 31R of the right working body 20R is engaged with the drive clutch 19 that is connected to the right end portion of the scraping rotor 30c and exposed outward (right side) from the side frame 9 in the deployed position. is there. Thereby, the scraping rotors 30L, 30C, 30R (collectively referred to as “scraping rotor 30”) rotate in conjunction with the same direction as the output side sprocket 69 rotates.

  A main body shield cover 40C, a left shield cover 40L, and a right shield cover 40R (collectively referred to as “shield cover 40”) are disposed above the scraping rotors 30C, 30L, and 30R, respectively. The rear end portion is provided with a main body apron 50C, a left apron 50L and a right apron 50R (collectively referred to as “apron 50”) whose front end portion is rotatably attached and whose rear side extends obliquely rearward. . A leveler 52 is provided at the rear end of the apron 50 so as to be pivotable in the vertical direction. The left apron 50L and the right apron 50R are provided with an extension leveler 55 that extends outward in the left-right direction. The extension leveler 55 is rotatable up and down about a rotation axis extending in the front-rear direction. It has become. Thereby, the extension leveler 55 can move between a working position protruding outward from the apron 50 by the rotating device 56 and a storage position arranged at the rear part of the apron 50.

  The main body shield cover 40C has an upper surface portion 41C having a rectangular shape in plan view disposed above the rotation center axis of the scraping rotor 30C, and a front surface portion 43C extending forward from the upper surface portion 41C and inclined downward. And a rear surface portion 45C that extends rearward from the upper surface portion 41C and is inclined downward and is provided with a main body apron 50C at the rear end portion. In the illustrated example, the front surface portion 43C and the rear surface portion 45C both have a rectangular shape in plan view. A side cover (not shown) having a shape along the edge of the upper surface portion 41C, the front surface portion 43C, and the rear surface portion 45C is provided at the left and right ends of the main body shield cover 40C. Protect.

  The left shield cover 40L and the right shield cover 40R are a top surface portion 41L, 41R having a rectangular shape in plan view and disposed above the rotation center axis of the scraping rotor 30L and the scraping rotor 30R, and a front side from the top surface portions 41L, 41R. Front surface portions 43L and 43R that are extended downward and inclined downward, and rear surface portions 45L that are extended rearward from the upper surface portions 41L and 41R and inclined downward and provided with aprons 50L and 50R at the rear ends. 45R. Then, in plan view, the front end edges of the front surface portions 43L and 43R of the left shield cover 40L and the right shield cover 40R are inclined such that the outer end side in the left-right direction at the unfolded position protrudes forward, and the left shield cover 40L Then, it is inclined linearly so as to protrude forward from the right end side toward the left end side, and the right shield cover 40R is inclined linearly so as to protrude forward from the left end side toward the right end side. As shown in FIG. 1, a side cover 47R having a shape along the edge of the upper surface portion 41R, the front surface portion 43R, and the rear surface portion 45R is provided at the left and right ends of the right shield cover 40R. , Protecting the sides. The left shield cover 40L is also provided with a similar side cover (not shown).

  In the illustrated example, the upper surface portion 41C and the rear surface portion 45C of the main body shield cover 40C and the upper surface portions 41L and 41R and the rear surface portions 45L and 45R of the left shield cover 40L and the right shield cover 40R have a length in the front-rear direction. It is formed substantially the same. Further, the length of the main body shield cover 40C projecting to the front side of the front surface portion 43C and the length of the front surface portions 43L and 43R of the left shield cover 40L and the right shield cover 40R projecting forward are the length of the main body shield cover 40C. Both end portions (in the left shield cover 40L and the right shield cover 40R, the inner end portion at the unfolded position) substantially coincide. For this reason, the front end edges of the front surface portions 43L and 43R of the left shield cover 40L and the right shield cover 40R are stretched further forward from the substantially same protruding position as the front end edge of the front surface portion 43C of the main body shield cover 40C. It is something to be issued. Note that the front end edges of the front surface portions 43C, 43L, and 43R of the main body shield cover 40C, the left shield cover 40L, and the right shield cover 40R all have substantially the same height.

  A mudguard 48 is provided on the front edges of the front surface portions 43C, 43L, 43R of the main body shield cover 40C, the left shield cover 40L, and the right shield cover 40R by a predetermined fixing means. In the illustrated example, the mudguard 48 is fixed to the front end edges of the front surface portions 43C, 43L, and 43R by a plate-like pressing member 49a and fastening means 49b such as a bolt. The mudguard 48 in the illustrated example has a plurality of mudguard pieces 48a formed by forming slits that are evenly provided in the vertical direction, and the lower end of each mudguard piece 48a is directed upward from the outside to the inside. It is designed to tilt. That is, the mudguard piece 48a disposed on the right side from the center with respect to the traveling direction is inclined so that the lower left end part is higher than the lower right end part, and the mudguard piece 48a disposed on the left side with respect to the traveling direction is The lower right end is inclined so as to be higher than the lower left end. Thus, by providing a predetermined inclination, the flow of water in the paddy field when in the traveling state can be guided to the center side.

  In addition, since the mudguard 48 is fixed to the shield cover 40, the lower end portion may be in a state of being immersed in the mud, so that the mudguard 48 receives excessive resistance from the rice stock and soil mass during work. It is desirable to have elasticity that can bend and deform appropriately. Therefore, it is desirable that the mudguard 48 is made of a synthetic resin such as polypropylene, polyethylene, polyvinyl chloride, and vinyl acetate, or a metal material such as a steel plate and stainless steel in addition to rubber (synthetic rubber).

  According to the embodiment, the left shield cover 40L is inclined linearly so as to protrude forward from the right end side toward the left end side, and the right shield cover 40R protrudes forward from the left end side toward the right end side. Thus, the shield cover 40 is inclined so as to protrude forward from the center side toward both end sides. Thereby, when the scraping work machine 1 is advanced, a flow of water is formed in the direction from the left and right to the center, so that the scissors are easily moved to the scraping rotor 30 side, and the swaging work is performed efficiently. In addition, since the distance from the scraping rotor 30 to the front end of the shield cover 40 is increased and the extrusion of muddy water to the front side due to the rotation of the scraping claw is reduced, the movement of the ridges by the extrusion is suppressed.

  In the embodiment, the left working body 20L and the right working body 20R have a width (length in the left-right direction) that is about half of the width of the work implement main body 10. Therefore, the left shield cover 40L, the main body shield cover The ratio in the width direction of 40C and the right shield cover 40R is left shield cover 40L: main body shield cover 40C: right shield cover 40R≈1: 2: 1. Thus, since the width of the left shield cover 40L and the right shield cover 40R which are the inclined portions is configured to be large with respect to the whole, it is possible to effectively form a flow of water.

  Further, a mudguard 48 is provided at the lower end portion on the front side of the shield cover 40, whereby a larger water flow is formed by a synergistic effect with the shield cover 40.

(Modification)
In addition, about the front-surface part 43C of the main body shield cover 40C, although the example which is a rectangular shape with the length of the front-back direction is shown as an Example, it is not limited to this. A modification is shown in FIG. Only the main body shield cover 140 having a configuration different from that of the embodiment will be described using the same reference numerals as in FIGS.

  The main body shield cover 140 in the scraping work machine 100 according to the modification is provided with an upper surface portion 141 having a rectangular shape in plan view disposed above the rotation center axis of the scraping rotor 30C, and extends from the upper surface portion 141 to the front side. And a front surface portion 143 inclined downward and a rear surface portion 145 extending rearward from the upper surface portion 141 and inclined downward and provided with an apron 50C at the rear end. In a plan view, the front edge of the front portion 143 is inclined so that the left and right ends at the unfolded position protrude forward, and in the illustrated example, the width (distance in the left and right direction) is about half of the left and right. It is what you are doing. Accordingly, the ratio of the left inclined portion 143L, the central portion 143C, and the right inclined portion 143R in the width direction is left inclined portion 143L: center portion 143C: right inclined portion 143R≈1: 2: 1.

  In the modified example, by being configured as described above, not only can the water flow be more effectively formed, but the left working body 20L and the right working body 20R are placed in the retracted positions, and only the working machine body 10 is scraped. Even when the work is performed, a water flow flowing into the center can be formed.

  As described above, the embodiments of the present invention have been described in detail with reference to the drawings. However, the specific configuration is not limited to these embodiments, and the design can be changed without departing from the scope of the present invention. Is included in the present invention. For example, an example in which the front end sides of the front portions of the left shield cover and the right shield cover are all inclined is shown, but the present invention is not limited to this, and the range to be inclined is arbitrarily designed.

  Moreover, although the example where the shape of the upper surface part of a left shield cover and a right shield cover is a rectangular shape was shown, it is not limited to this. For example, you may make it incline so that the shape of an upper surface part may protrude ahead as it becomes the left-right direction outer end side. In this case, the front surface portion is formed in a substantially parallelogram shape, and is inclined so that the outer side protrudes forward in accordance with the overhang of the upper surface portion.

  Moreover, although the example in which the inclined surface in the front end edge of the front part of the left shield cover and the right shield cover is linearly formed in a plan view is shown, the present invention is not limited to this. The shield cover only needs to be inclined so as to protrude forward from the center side in the left-right direction toward both ends, and may be curved so as to enter inside (opposite to the traveling direction), for example.

  Moreover, as the mudguard material, an example in which a mudguard piece is formed by entering a slit in the vertical direction and the lower end edge of each mudguard piece is inclined is shown, but the present invention is not limited to this. You may incline only this angle.

DESCRIPTION OF SYMBOLS 1 Scratch work machine 10 Work machine main body 20L Left work machine 20R Right work machine 30C Drake rotor 30L Drake rotor 30R Drake rotor 40C Main body shield cover 40L Left shield cover 40R Right shield cover 43L Front 43R Front 48

Claims (4)

It is equipped with a scraping rotor that is mounted on the rear part of the traveling machine body and rotates around a rotation shaft provided in the left-right direction by the power transmitted from the traveling machine body, and advances along with the traveling of the traveling machine body while rotating. A scraping work machine that performs scraping work.
A shield cover covering the top of the scraper rotor;
The scraper working machine, wherein the shield cover is inclined so as to protrude forward from the center side in the left-right direction toward both end sides. The scraping rotor comprises a central scraping rotor disposed at the center in the left-right direction, a left scraping rotor disposed on the left side of the central scraping rotor, and a right scraping rotor disposed on the right side of the central scraping rotor,
The shield cover consists of a central shield cover that covers the top of the central scraping rotor, a left shield cover that covers the top of the left scraping rotor, and a right shield cover that covers the top of the right scraping rotor,
The left shield cover is inclined so as to protrude forward from the right end side toward the left end side,
The scraping work machine according to claim 1, wherein the right shield cover is inclined so as to protrude forward from the left end side toward the right end side.   The scraping work machine according to claim 2, wherein the central shield cover is inclined so as to protrude forward from the central side in the left-right direction toward both end sides.   The scraping work machine according to any one of claims 1 to 3, wherein a mudguard is attached to the front side of the shield cover in the traveling direction.

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