JP5000311B2 - Pricking machine - Google Patents

Description

The present invention relates to raised soil formed in the corner portions of the field which is tillage by Russia Tari working unit to earthing up possible puddling working machine.

  Conventionally, this kind of scavenging work machine 60 is described in, for example, Patent Document 1, and as shown in FIG. 6A (partial plan view), below a mounting frame 62 constituting a part of the machine body 61. A rotary working part (crush body in the literature) is provided rotatably, a shield cover 15 (cover body in the literature) covering the upper part of the rotary working part is provided in the machine body 61, and a shield cover located on the rear side of the rotary working part The first leveling body 63 for leveling the cultivated soil cultivated by the rotary working unit is provided at the rear end portion of the 15 so as to be rotatable in the vertical direction, and the first leveling body 63 is leveled by the first leveling body 63 at the rear end portion of the first leveling body 63. A second leveling body 64 for further leveling the cultivated soil is provided.

  The first leveling body 63 of the scraping work machine 60 is provided so as to crimp the cultivated soil surface via a fixing plate or the like attached to the machine body 61. The second leveling body 64 can be set to a rocking free position and a soiling work position for making the vertical rocking of the second leveling body 64 free through a switching operation means 65 provided in the machine body 61. When the second leveling body 64 is set to the earthing work position, the second leveling body 64 is in a state of standing in the vertical direction, and can be forced to scrape and move the cultivated soil in the field. Become.

  Patent Document 2 also discloses a scraping work machine that separately provides a leveling body that performs earthing when performing earthing work. As shown in FIG. 6B (perspective view), the scraper working machine 70 is capable of adjusting the vertical position on the rear side of the rotary working part whose upper part is covered by the shield cover 15 and performing the first work. A leveling body 71 is provided, and a second leveling body 72 is provided on the rear side of the first leveling body 71 so as to be movable up and down to level the field.

Japanese Patent Laid-Open No. 9-94002 JP 2006-204108 A

  Among such conventional skimming machines, the scraping work machine 60 that puts the second leveling body 64 upright when performing the earthing has an uneven portion 66 at the tip of the second leveling body 64 in the width direction of the leveling body. If the cultivated soil in the field is grounded by the second leveling body 64, the soiling work trace is likely to be a streak. In addition, since there is no leveling mechanism on the rear side of the second leveling body 64, there arises a problem that the cultivated soil surface becomes rough.

  Further, the scraping work machine 70 for providing the first leveling body 71 when performing the earthing is provided for the first leveling body 71 to perform the earthing, and a rear cover 73 attached to the rear end portion of the shield cover 15 and A soil discharge opening 74 is formed between the first leveling body 71 for discharging surplus cultivated soil at the time of soiling, and a rubber plate discharge opening cover that covers the soil discharge opening 74 at the rear end of the rear cover 73. Since the body 75 is attached, there are disadvantages that the number of parts is large, the cost is increased, the structure is complicated, and the usability is poor.

The present invention has been made in view of such a problem, and leveling the cultivated soil surface after soiling, leveling up the cost without complicating the structure of the scraping work machine, and being easy to use. An object is to provide a scratching machine .

In order to solve such a problem, the present invention has the following features. One of the features is a machine body that rotatably supports a rotary working part that performs tillage work, a cover part that is provided on the machine body and covers an upper part of the rotary work part (for example, the shield cover 15 in the embodiment), and the cover To the back side of the apron moved to the earthing work position in a scraper working machine comprising an apron that is pivotally supported at the rear end of the part and a leveler that is pivotally supported at the rear end of the apron A rotation restricting means (for example, a rotation restricting device 30 in the embodiment) that restricts the rotation of the rod, and the rotation restricting means includes a rod portion that is supported by the apron so that the lower end portion thereof is freely rotatable and extends upward. A regulation position adjustment unit that adjusts a position that regulates rotation of the apron to the back side, and the regulation position adjustment unit is a main body unit that supports the tip portion of the rod portion so as to be movable in the front-rear direction; Can be rotated freely on the main unit An arm part that is held and contacts the tip part of the rod part to move the tip part, and a cylinder part that is provided in the main body part and rotates the arm part. The tip part can be moved to a position where the amount of cultivated soil brought down by the apron during the soiling work is reduced, a position where the amount of cultivated soil brought up is increased, and a position where the rotation of the apron is freed when performing the scraping work, The leveler is characterized in that it performs leveling work of the cultivated soil collected by the apron during the earthing work by the apron .

According to this feature, by providing the rotation restricting means for restricting the rotation of the apron that has been moved to the earthing work position to the back side, the apron is moved to the earthing work position, and the back of the apron is moved by the rotation restricting means. The rotation to the side is restricted. For this reason, when the aircraft moves forward with the apron moved to the earthing work position, the apron can perform the earthing work by scraping the cultivated soil in the field. As a result, it is possible to level the cultivated soil surface after soiling. In addition, the rotation restricting means has a restricting position adjusting unit that adjusts the position that restricts the rotation of the apron to the back side, so that when the field is leveled by the apron, the apron is set to the rear side of the aircraft more However, when carrying out work on the field with an apron, the apron can be set on the front side of the machine body, the apron's rotation restricting position can be easily adjusted, and the usability of the scraping work machine can be further improved. it can. In addition, the leveler can level the earthing work trace by the apron by performing leveling work of the cultivated soil gathered by the apron during the earthing work by the apron.

  One of the characteristics is that the rotation restricting means includes an elastic body (for example, the spring 37 in the embodiment) that urges the apron against the rotation of the apron toward the back side.

  According to this feature, the rotation restricting means has an elastic body that urges the apron against the rotation of the apron to the back side, so that the soil staying on the surface side of the apron during the earthing work by the apron. When the amount increases, the elastic body contracts and the apron can be rotated to the back side when the amount of accumulated soil exceeds a predetermined amount. For this reason, it becomes possible to discharge the excess soil staying on the surface side of the apron, and it is possible to prevent the workability of the earthing work from being lowered.

According to the scraping work machine according to the present invention, by having the above characteristics, the surface of the cultivated soil after leveling is leveled, the structure of the scraping work machine is simple, the cost increase is suppressed, and the usability is easy to use. Machine can be provided.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a scraping work machine according to the present invention will be described below with reference to FIGS. Note that. For convenience of explanation, the directions of the arrows shown in FIG. 1 (side view) and FIG. 2 (a) (plan view) will be described below as the front and rear direction and the left and right direction.

  As shown in FIG. 1 (side view), the scraping work machine 1 is a three-point link coupling mechanism (not shown) provided at the rear part of the traveling machine body 90 at the front part of the machine body 5 having the main frame 3 extending in the left-right direction. The top mast 7 and the lower link connecting portion connected to each other are provided, and are attached to the rear portion of the traveling machine body 90 so as to be movable up and down. A gear box 9 having an input shaft 9a projecting forward is provided at the central portion in the left-right direction of the main frame 3, and power is input from the PTO shaft of the traveling machine body 90 through a power transmission means such as a universal joint to the input shaft 9a. To be communicated to.

  A chain transmission case 11 is suspended from the left end portion of the main frame 3, and a side frame is suspended from the right end portion of the main frame 3 so as to face the chain transmission case 11. Rotary work in which a transmission mechanism is provided on the left side of the main frame 3 connected to the chain transmission case 11 and in the chain transmission case 11, and a plurality of tilling claws are attached between the lower end of the chain transmission case 11 and the side frame. The part 13 is rotatably provided. Then, the power transmitted to the input shaft 9a is transmitted to the transmission mechanism in the main frame 3 and the chain transmission case 11 through the gear box 9 to rotate the rotary working unit 13 in a predetermined direction.

  The upper side of the rotary working unit 13 is covered with a shield cover 15, and side covers 17 are provided at both ends of the shield cover 15 in the left-right direction. A front end portion of the apron 19 is attached to the rear end portion of the shield cover 15 so as to be rotatable in the vertical direction, and the apron 19 extends obliquely downward. The rear end portion 19a of the apron 19 is formed in a substantially straight line shape in the left-right direction, and flattens the cultivated soil surface. A leveler 21 is attached to the rear end of the apron 19 so as to be rotatable in the vertical direction, and the lower surface of the leveler 21 is grounded to level the cultivated soil surface.

  A pair of rotation restricting devices 30 that restrict the rotation of the apron 19 toward the back side are provided between the back surface of the apron 19 and the upper surface of the shield cover 15 on the center side of the left and right ends of the body 5. ing. As shown in FIGS. 1, 2A and 2B (rear view), the rotation restricting device 30 includes a rod portion 31 that extends in the front-rear direction and is arranged on the back side of the apron, and a rod portion. The position adjustment part 40 which adjusts the position which controls the movement to the front side of the front-end part of 31 is provided. The rod portion 31 has a rear end attached to the support member 33 attached to the back surface of the apron 19 so as to be rotatable and slidable, and a pin member 35 provided at the front end is provided at the position adjusting portion 40. It is attached so as to be movable along the elongated hole 41 formed.

  The support member 33 includes a pair of support plates 33a that are disposed to face each other in the left-right direction, and a columnar rotation portion 34 is rotatably attached between the support plates 33a. The rear end portion of the rod portion 31 is slidably inserted into the rotating portion 34, and is attached to the rod portion 31 between the rotating portion 34 and the pin 36 attached to the intermediate portion of the rod portion 31. The spring 37 which is a part of the movement regulating device 30 suppresses the rotation of the apron 19 toward the back side. In the intermediate portion of the rod portion 31, a plurality of insertion holes for inserting the pins 36 are provided at predetermined intervals in the axial direction of the rod portion 31, and when the insertion position of the pins 36 is changed, The size of the gap between the spring 37 and the pin 36 extending in the natural length can be adjusted, and the range in which the apron 19 can freely rotate can be adjusted.

  The above-described pin member 35 provided at the front end portion of the rod portion 31 is attached with its left and right end portions protruding from the rod portion 31, and the pair of left and right protruding pin members 35 are disposed opposite to the position adjustment portion 40. The front end portion of the rod portion 31 is supported so as to be movable in the front-rear direction.

  The position adjusting unit 40 is attached to the main body 43 attached to the shield cover 15, and is rotatably attached to the main body 43 in the front-rear direction so as to contact the pin member 35 of the rod 31 and the front end of the rod 31. The arm part 45 which adjusts the position which controls the movement to the front side of this, and the cylinder part 47 which is attached to the upper part of the main-body part 43 and rotates the arm part 45 is comprised. The main body portion 43 includes a pair of main body side support plates 43a arranged to face each other in the left-right direction, and the long hole portions 41 described above are provided in the main body side support plates 43a in a state of extending in the front-rear direction. The front end portion of the rod portion 31 described above is disposed between the pair of main body side support plates 43a.

  On the upper part between the pair of main body side support plates 43a, a cylinder portion 47 is attached in which the rod side is disposed on the rear side and the bottom side is disposed on the front side. A U-shaped connecting member 49 is attached to the rod-side tip of the cylinder portion 47 in a plan view, and the tip of the connecting member 49 is connected to each outer upper end of the pair of body-side support plates 43a in the front-rear direction. It is attached to the middle part of the arm part 45 that is attached to be freely rotatable. For this reason, when the cylinder part 47 is extended, the lower part of the arm part 45 is rotated backward, and when the cylinder part 47 is contracted, the lower part of the arm part 45 is rotated forward. The cylinder portion 47 may be either a hydraulic type or an electric type.

  The arm portion 45 has a contact portion 45 a whose lower side extends to a position below the long hole portion 41 and contacts the pin member 35 of the rod portion 31. For this reason, if expansion / contraction of the cylinder part 47 is locked in a state where the contact part 45a is in contact with the pin member 35, the arm part 45 is in a locked state, and the movement of the pin member 35 to the front side can be restricted.

  When the cylinder portion 47 is substantially fully extended, the arm portion 45 moves the contact portion 45a to the vicinity of the rear end position of the long hole portion 41 and moves the pin member 35 to the rear end position of the long hole portion 41. The contact portion 45a is formed so as to move in the vicinity of the front end position of the long hole portion 41 when the cylinder portion 47 is substantially fully reduced.

  The cylinder part 47 of the rotation restricting device 30 is configured such that the expansion and contraction movement is controlled in accordance with the operation of the operation switch of the operator who has boarded the traveling machine body 90. The operation switch is only required to be installed within a range that can be operated by an operator who has boarded the traveling machine body 90, and may be installed at a driver's seat of the traveling machine body 90 or a front side portion of the skimming work machine 1.

  In the above-described embodiment, an example in which a pair of rotation restricting devices 30 are provided in the left-right direction of the body is shown. However, the present invention is not limited to this, and one or three rotation restricting devices 30 are provided in the body 5. You may provide above.

  Next, the earthing work method when the earthing work is performed by the scraper working machine 1 configured as described above will be described. Usually, paddy padding is a work for removing unevenness by bringing up the cultivated soil formed around the field by the scraping work inside the field. First, a soil evacuation operation in which the amount of cultivated soil collected by the scraper working machine 1 of the present invention is small will be described. As shown in FIG. 3 (side view), the traveling machine body 90 is arranged such that the apron 19 is positioned at the earthing work position Pt where the inclination angle θ of the apron 19 with respect to the field surface is an acute angle (θ = about 50 degrees in the drawing). The boarded operator operates the operation switch to extend the cylinder portion 47 of the rotation restricting device 30. Further, the power of the traveling machine body 90 is transmitted to the input shaft 9a, and the rotary working unit 13 is rotated in a predetermined direction. Then, when the traveling machine body 90 is moved forward and the scraping work machine 1 is moved forward, the rotary working unit 13 cultivates the cultivated soil in the field, and the rotation restricting device 30 restricts the rotation of the apron 19 toward the back side. The cultivated soil cultivated by the apron 19 is leveled, and the surface of the cultivated soil leveled by the leveler 21 is leveled.

  Moreover, the earthing work method with much amount of cultivated soil gathered with the scraping work machine 1 of this invention is demonstrated. First, as shown in FIG. 4 (side view), the apron 19 is positioned at the earthing work position Pt where the apron 19 is substantially upright with respect to the field surface (in the drawing, the inclination angle θ of the apron 19 is about 70 degrees). As described above, the cylinder portion 47 of the rotation restricting device 30 is brought into a substantially fully extended state. Further, the power of the traveling machine body 90 is transmitted to the input shaft 9a, and the rotary working unit 13 is rotated in a predetermined direction. When the traveling machine body 90 travels forward, the rotary working unit 13 plows the agricultural soil in the field, and the rotation restriction device 30 restricts the rotation of the apron 19 toward the back side, and the plowing is performed by the apron 19 that is substantially upright. The cultivated soil is grounded and leveled, and the surface of the cultivated soil leveled by the leveler 21 is leveled.

  Here, when the amount of cultivated soil staying on the front side of the apron 19 increases, the pressing force to the back side of the apron 19 increases and the spring 37 is contracted. As a result, the apron 19 can be rotated to the back side to discharge excess cultivated soil, and the workability of the earthing work can be prevented from being lowered.

  In addition, when performing a normal scraping work without performing the earthing work, as shown in FIG. 5 (side view), it is necessary to turn the apron 19 in a free state. In this case, the operator operates the operation switch to reduce the cylinder portion 47 of the rotation restricting device 30 to the fully contracted state, so that the contact portion 45a of the arm portion 45 is in front of the front end of the long hole portion 41. Move. As a result, the front end portion of the rod portion 31 can freely move in the front-rear direction along the long hole portion 41, and the apron 19 can be rotated freely. When the traveling machine body 90 travels forward in this state, the cultivated soil in the field is cultivated by the rotary working unit 13, the cultivated soil cultivated by the apron 19 is leveled, and the surface of the cultivated soil laid by the leveler 21 is leveled. Thus, normal scraping work can be performed.

  In this way, by providing the pivoting work machine 1 with the rotation restricting device 30 that restricts the rotation of the apron 19 toward the back side, the back side of the apron 19 that has been moved to the earthing work position by the rotation restricting device 30. Rotation to can be restricted. For this reason, when the scraping work machine 1 moves forward with the apron 19 moved to the earthing work position, the earthing work can be performed by the apron 19, and the cultivated soil surface after the earthing can be leveled by the leveler 21. . In addition, since the apron 19 is used for the earthing work, the usability of the scraping work machine 1 can be improved. Further, since the rotation restricting device 30 has a simple structure including the rod portion 31 to which the spring 37 is attached and the position adjusting portion 40, even if the rotation restricting device 30 is provided in the scraping work machine 1, The structure is not complicated, and an increase in cost can be suppressed.

  Further, the rotation restricting device 30 includes a position adjusting unit 40 that adjusts a position for restricting the rotation of the apron 19 toward the back side, so that the rotation restricting position of the apron 19 according to the work content of the apron 19 is achieved. Adjustment can be performed and the usability of the scraping work machine 1 can be further improved.

  In addition, the cylinder expansion / contraction direction of the position adjusting unit 40 is not limited to the above-described embodiment, and may be reversed. In this case, the inclination angle θ of the apron 19 becomes loose when the cylinder portion 47 extends, and the inclination angle θ of the apron 19 becomes tight when the cylinder portion 47 shrinks. Further, the scraping work machine 1 is not limited to the above-described embodiment, and the apron 19 may be configured such that both side portions in the left-right direction can be folded. In this case, the rotation restricting device 30 is connected to the apron main body portion arranged at the center of the apron 19 in the left-right direction, and the extension apron connected to the left and right ends of the apron main body portion is interlocked with the apron main body portion. And configured to rotate. By constructing in this way, like the above-mentioned scraping work machine 1, the cultivated soil surface after leveling is leveled, and the cost increase can be suppressed without complicating the structure of the scraping work machine. , Can improve usability.

  In the above-described embodiment, the cylinder expansion / contraction direction of the position adjustment unit 40 is shown when the inclination angle θ of the apron 19 is about 50 ° and when it is about 70 ° when performing the earthing work. As long as the movement of the front end portion of the rod portion 31 to the front side is restricted by the arm portion 45 of the position adjusting portion 40, the scraping work machine 1 of the present invention can perform the earthing work by the apron 19. Even if the inclination angle θ of the apron 19 is between about 50 ° and about 70 ° or smaller than about 50 °, the earthing work can be performed. Furthermore, depending on the field conditions, it is possible to perform a scraping operation while using the earthing function.

The side view of the scraping work machine concerning one embodiment of the present invention is shown. FIG. 2 shows a scraping work machine according to an embodiment of the present invention, in which FIG. 1A is a partial plan view on the left side of the scraping work machine, and FIG. 2B is a partial rear view on the left side of the scraping work machine. The partial side view of the scraping working machine for demonstrating the action | operation of the rotation control apparatus provided in the shaving working machine is shown. The partial side view of the scraping working machine for demonstrating the action | operation of the rotation control apparatus provided in the shaving working machine is shown. The partial side view of the scraping work machine for demonstrating the action | operation of the rotation control apparatus when it exists at the time of normal scraping work is shown. A conventional scraping work machine is shown, in which (a) is a partial plan view of the scraping work machine, and (b) is a partial perspective view of the back side of another scraping work machine.

1 Scratch work machine 5 Airframe 13 Rotary work part 15 Shield cover (cover part)
19 Apron 21 Leveler 30 Rotation restricting device (Rotation restricting means)
31 Rod part 37 Spring (elastic body)
40 Position adjustment part (Regulated position adjustment part)
43 Body
45 Arm
47 Cylinder part Pt Digging work position

Claims (2)

A machine body that rotatably supports a rotary working part that performs tillage work, a cover part that is provided on the machine body and covers an upper part of the rotary work part, and an apron that is rotatably supported by a rear end part of the cover part In the scraper working machine comprising a leveler rotatably supported at the rear end of the apron,
A rotation restricting means for restricting the rotation of the apron moved to the earth work position to the back side ;
The rotation restricting means includes a rod portion that has a lower end portion rotatably supported by the apron and extends upward, and a restriction position adjustment portion that adjusts a position that restricts the rotation of the apron toward the back side. Have
The restricting position adjusting unit includes a main body part that supports the front end part of the rod part so as to be movable in the front-rear direction, and is rotatably supported by the main body part to contact the front end part of the rod part. And a cylinder portion that is provided in the main body portion and that rotates the arm portion, and the tip end of the rod portion is moved by the apron when the arm portion is rotated. A position to reduce the amount of cultivated soil, a position to increase the amount of cultivated soil to be moved, and a position to make the rotation of the apron free when performing scraping work,
The leveler performs a leveling work of the cultivated soil laid by the apron during the digging work by the apron .   2. The scraping work machine according to claim 1, wherein the rotation restricting unit includes an elastic body that urges the apron against rotation of the apron toward the back side.

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