JP2011239740A - Farm implement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a farm implement which hardly causes troubles due to soil clogging or the like and can readily be maintained.SOLUTION: The farm implement 1 includes a cultivation member 11 for performing cultivation works and a land-leveling member 16 for performing land-leveling works. The farm implement 1 has a connector 31 whose one end side is connected to a machine frame 6 and whose other end side is connected to the land-leveling member 16, and an operation member 46 which can selectively be set to the first state or the second state. The operation member 46 is rotatably connected to a rotator 47. One end side of an extension coil spring 61 is attached to the attaching portion 58 of the rotator 47, and the other end side of the extension coil spring 61 is attached to the attaching portion 36 of the connector 31. When the operation member 46 is set to the first state, the extension coil spring 61 downward energizes the land-leveling member 16. When the operation member 46 is set to the second state, the extension coil spring 61 does not energize the land-leveling member 16.

Description

  The present invention relates to an agricultural machine that can be easily maintained.

  Conventionally, for example, an agricultural machine described in Patent Document 1 is known.

  This conventional farm work machine includes a machine body connected to a tractor that is a traveling vehicle, a cultivating body that is provided in the machine body and performs a cultivating work, and a leveling body that performs a grading work behind the cultivating body. In addition, the agricultural machine includes an operating lever, a rotating frame that rotates together with the operating lever, a front end portion pivotally attached to a rear end portion of the rotating frame, and a rear end side inside the hole of the rotating piece (tumbler). And a compression coil spring wound around the spring rod and energizing the leveling body.

JP-A-10-52105

  However, in the conventional agricultural machine described above, for example, the soil tends to be clogged in the hole of the rotating piece (tumbler) and the movement of the spring rod becomes bad, and the maintenance is complicated.

  This invention is made | formed in view of such a point, and it aims at providing the agricultural machine with easy maintenance.

  The agricultural machine according to claim 1 has a machine body, a farming body that is provided in the machine body and performs a tilling work, a ground leveling body that performs a ground leveling work behind the farming body, and a mounted portion, and one end side of the farming machine is A connection body connected to the machine body, the other end side of which is connected to the leveling body, an operating body provided rotatably on the machine body, and selectively set to the first state and the second state; A rotating body that is rotatably connected to the operating body, and an urging force that one end side is attached to the attached portion of the rotating body and the other end side is attached to the attached portion of the connecting body. When the operating body is set in the first state, the biasing body biases the leveling body downward, and the operating body is set in the second state. In some cases, the biasing body does not bias the leveling body or biases the leveling body upward. And it serves as a state.

  When the operating body is set to the second state in the agricultural machine according to claim 1, the agricultural machine according to claim 1 is an urging body when the tilling depth of the tilling body becomes equal to or greater than the set depth. Becomes a state of biasing the leveling body downward.

  The agricultural machine according to claim 3 is the agricultural machine according to claim 1 or 2, wherein the connecting body has a plurality of attached parts, and the other end side of the biasing body is from among the attached parts. It is attached to the selected one attached portion.

  The agricultural machine according to claim 4 is the agricultural machine according to any one of claims 1 to 3, wherein the machine body has an arc-shaped elongated hole portion, and the operating body is inserted into the arc-shaped elongated hole portion. It has a shaft part and is rotatable about a rotation center axis passing through the arc center of the arc-shaped elongated hole part, and the rotating body is rotatably connected to the shaft part of the operating body. It is a thing.

  The agricultural machine according to claim 5 is the agricultural machine according to any one of claims 1 to 4, wherein the biasing body is a tension coil spring.

  According to the first aspect of the present invention, since it is a configuration that does not use a conventionally required rotating piece or the like, problems due to clogging of soil are less likely to occur, and maintenance is easy.

  According to the invention which concerns on Claim 2, when the operating body is set to the 2nd state, when the tilling depth of a tilling body becomes more than a setting depth, a biasing body will bias a leveling body below. Therefore, appropriate leveling work can be performed.

  According to the invention which concerns on Claim 3, the biasing force of a biasing body can be easily adjusted by selecting the to-be-attached part which attaches the other end side of a biasing body.

  According to the invention which concerns on Claim 4, an airframe has a circular arc long hole part, and an operation body has the axial part inserted in the circular arc long hole part, and the rotation which passes along the circular arc center of a circular arc long hole part Since it is rotatable about the central axis, and the rotating body is connected to the shaft portion of the operating body so as to be rotatable, not only a simple configuration but also maintenance is easy.

  According to the invention of claim 5, since the biasing body is a tension coil spring, the tension coil spring appropriately biases the leveling body downward when the operating body is set to the first state. .

It is a side view of the agricultural working machine which concerns on the 1st Embodiment of this invention. It is a top view of an agricultural working machine same as the above. It is a partial side view of an agricultural working machine same as the above. It is a partial top view of an agricultural working machine same as the above. It is an action figure in the state where the operation tool of the agricultural work machine was set to the 1st state, (a) is an action figure at the time of normal work, and (b) is an action figure at the time of deep plowing work. It is an action figure in the state where the operation tool of the farm work machine was set to the 2nd state, (a) is an action figure at the time of normal work, and (b) is an action figure at the time of deep plowing work. FIG. 7 is a partial detail view corresponding to FIG. 6. It is an action figure of the state where the operation tool of the agricultural working machine concerning a 2nd embodiment of the present invention was set to the 1st state, (a) is an action figure at the time of normal work, and (b) is at the time of deep plowing work FIG. It is an action figure in the state where the operation tool of the farm work machine was set to the 2nd state, (a) is an action figure at the time of normal work, and (b) is an action figure at the time of deep plowing work. It is a partial side view of the agricultural machine based on the 3rd Embodiment of this invention. It is a partial side view of the agricultural machine based on the 4th Embodiment of this invention. It is a partial side view of the agricultural working machine which concerns on the 5th Embodiment of this invention. It is a partial side view of an agricultural working machine same as the above. It is a partial side view of the agricultural working machine which concerns on the 6th Embodiment of this invention. It is a partial side view of an agricultural working machine same as the above.

  A first embodiment of the present invention will be described with reference to FIGS.

  1 and 2, reference numeral 1 denotes an agricultural machine, and the agricultural machine 1 is a towing-type scraping working machine (cultivation leveling device) used by being connected to the rear part of a tractor (not shown) that is a traveling vehicle, for example. is there. The farm work machine 1 is connected to the rear part of the tractor and performs the tilling work and the earthing work while moving toward the forward direction (left direction in FIG. 1) by the forward traveling of the tractor in the farm field. To do.

  The farm work machine 1 is, for example, a three-fold foldable type, and includes a central work unit 2 and left and right extension work units (side work) provided at both right and left ends of the central work unit 2 so as to be foldable and unfoldable. Part) 3. Each extension work part 3 is provided in the central work part 2 so as to be rotatable up and down around a shaft part 4 in the front-rear direction.

  The central working unit 2 includes a machine body 6 connected to a three-point link unit (working machine lifting device) at the rear of the tractor.

  The airframe 6 has a three-point connecting portion constituted by a top mast and a lower arm (not shown), and the three-point connecting portion is connected to the three-point link portion of the tractor T. The machine body 6 has a gear case portion 7 at the center in the left-right direction, and the input shaft 8 is rotatably supported by the gear case portion 7. The input shaft 8 is connected to the PTO shaft of the tractor via power transmission means.

  Further, below the machine body 6, a cultivating body 11 that rotates in a predetermined direction around a rotation center axis in the left-right direction with power from the input shaft 8 side is rotatably provided. The cultivating body 11 has a cultivating shaft 12 that is a rotation shaft in the left-right direction, and a plurality of cultivating claws 13 that are provided on the cultivating shaft 12 and rotate integrally with the cultivating shaft 12. The upper portion of the tillage body 11 is covered with a substantially plate-like cover portion (cultivation portion cover) 10 of the body 6.

  Further, a substantially plate-shaped leveling body 16 that performs leveling work behind the tillage body 11 is provided at the rear end portion of the cover portion 10 of the body 6 so as to be rotatable up and down via a rubber plate 17 that is an elastic plate. ing. The leveling body 16 includes a substantially flat plate-shaped first leveling body (level plate) 18 having an upper end attached to the rear end portion of the cover portion 10 via a rubber plate 17, and a lower end portion of the first leveling body 18. It has a substantially plate-like second leveling body (rake) 19 attached so as to be vertically rotatable.

  The first leveling body 18 has a left and right shaft portion 20 at the upper end on both ends in the left and right direction, and this shaft portion 20 is formed in a substantially plate-shaped leveling body support rotating portion 21 of the machine body 6. The straight long hole portion 22 is slidably inserted along the straight long hole portion 22.

  The leveling body support rotating portion 21 is attached to the left and right side plate portions 23 of the machine body 6 so as to be vertically rotatable around a shaft portion 24 in the left-right direction. In addition, a substantially plate-like stopper portion 25 is fixedly attached to the side plate portion 23 of the machine body 6 so as to restrict downward rotation of the first leveling body 18 by contact with the first leveling body 18. That is, the first leveling body 18 is prevented from rotating downward from a predetermined position due to contact with the stopper portion 25.

  Further, as shown in FIGS. 3 and 4, the central working unit 2 has an upper end that is one end side rotatably connected to the machine body 6 and a lower end that is the other end is the second end of the leveling body 16. A pair of left and right connecting bodies 31 are rotatably connected to one leveling body 18.

  The connection body 31 includes a first connection arm (first U-shaped frame) 33 and a second connection rotatably connected to the first connection arm 33 via a shaft portion 35 that is a connection shaft portion in the left-right direction. And an arm (second U-shaped frame) 34. A shaft portion 35 that is a connecting pin is a mounted portion (spring mounted portion) 36.

  The upper end portion of the first connecting arm 33 is connected to the arm connected portion 38 of the body 6 so as to be rotatable about a shaft portion 39 in the left-right direction. The arm connected portion 38 is fixedly attached to the cover portion 10 of the body 6. The lower end portion of the second connecting arm 34 is connected to the arm connected portion 40 of the first leveling body 18 so as to be rotatable around a shaft portion 41 in the left-right direction. The arm connected portion 40 is fixedly attached to the main body plate portion 18a of the first leveling body 18. And the lower end part of the 1st connection arm 33 and the upper end part of the 2nd connection arm 34 are mutually connected via the axial part 35 so that rotation is possible.

  Further, the central working unit 2 is provided in the arm connected portion 38 of the airframe 6 so as to be rotatable around a rotation center axis (fulcrum) X in the left-right direction, and is in a first state (standing state) and a second state (falling down) And an operating body (handle) 46 such as an operating lever that is selectively set to a state), and a rotating body (spring hanging member) 47 that is an interlocking body that is rotatably connected to the operating body 46. .

  The operating body 46 is integrally connected to a left and right support shaft portion 51 supported by the arm connected portion 38 of the machine body 6 so as to be rotatable about the rotation center axis X, and an end portion of the support shaft portion 51. A gripping shaft portion 52 that is bent about 90 degrees with respect to the support shaft portion 51, and a left-right shaft portion 53 that is connected to the support shaft portion 51 via a connecting plate portion 54 and is positioned in parallel with the support shaft portion 51. And have. Note that the rotation center axis X coincides with the axis of the support shaft portion 51.

  The shaft portion 53 of the operation body 46 is slidably inserted along the arc-shaped elongated hole portion 55 into the arc-shaped elongated hole portion 55 formed in the arm connected portion 38 of the machine body 6. That is, the operating body 46 has a shaft portion 53 that is slidably inserted into the arc-shaped elongated hole portion 55 of the machine body 6, and the operating body 46 is a rotation center that passes through the arc center of the arc-shaped elongated hole portion 55. It can be turned up and down with respect to the body 6 around the axis (support shaft portion 51) X. When the operating body 46 is set to the first state, the shaft portion 53 is located at the lower end of the arc-shaped elongated hole portion 55, and when the operating body 46 is set to the second state, the shaft portion 53 is arc-shaped. Located at the upper end of the long hole portion 55.

  The rotating body 47 is, for example, a substantially plate-like member having a substantially U shape, and has one shaft hole 56 at one end and one spring hole 57 at the other end. . The spring hole portion 57 is a mounted portion (spring mounted portion) 58.

  Then, the shaft portion 53 of the operating body 46 is rotatably fitted in the shaft hole 56 of the rotating body 47. That is, the shaft hole portion 56 of the rotating body 47 is rotatably connected to the outer peripheral side of the shaft portion 53 of the operating body 46. Further, the rotating body 47 has a concave engaging portion 59 that is detachably engaged with the support shaft portion 51 of the operating body 46.

  The central working unit 2 has a front end portion which is one end side attached to a spring hole portion 57 which is a mounted portion 58 of the rotating body 47 and a rear end portion which is the other end side is a mounted portion of the coupling body 31. A tension coil spring (pull spring) 61 is provided as an urging body that is attached to the shaft portion 35 that is 36 and urges the leveling body 16.

  As shown in FIG. 4, the tension coil spring 61 is disposed below the first connecting arm 33, has a substantially arc-shaped one end hooking portion 62 at the front end portion, and has a substantially arc-shaped other at the rear end portion. An end hook 63 is provided. The one end hooking portion 62 is hooked on the spring hole 57 of the rotating body 47, and the other end hooking portion 63 is hooked on the shaft portion 35 of the coupling body 31.

  Further, as shown in FIG. 2, a earthing unit 65 for locking the leveling body 16 in the earthing work state is provided at the center in the left-right direction of the central working part 2.

  Each of the left and right extension work units 3 includes an extension machine 71 provided on the machine body 6 of the central work part 2 so as to be pivotable up and down, and an extension farm body (see FIG. (Not shown), and an extended leveling body 73 that is provided on the cover part (cultivation part cover) 72 of the extension machine body 71 so as to be rotatable up and down and performs leveling work behind the extended tillage body.

  The extended leveling body 73 includes a first extended leveling body (side flat plate) 74 whose upper end is attached to the rear end portion of the cover portion 72 via a rubber plate, and a lower end portion of the first extended leveling body 74. And a substantially plate-like second extended leveling body (side rake) 75 attached to be rotatable. Further, an additional extension leveling plate (extension rake) 76 is attached to the outer end portion of the second extension leveling body 75 so as to be vertically rotatable.

  The agricultural work machine 1 includes a state in which only the central work unit 2 is operated, a state in which the central work unit 2 and the left and right extension work units 3 are operated, and a central work unit 2 and one of the left and right extension operations. It is possible to selectively switch to the state of working in the section 3. Further, the extended leveling body 73 of the extension work unit 3 is configured to rotate up and down integrally with the leveling body 16 of the central work unit 2 when the extension work unit 3 is deployed.

  Next, the operation of the agricultural machine 1 will be described.

  For example, a case will be described in which the left and right extension work sections 3 are folded, and only the central work section 2 performs a tilling work that is a scraping work.

  In the field, that is, for example, a paddy field in which water is stored, when the farm work machine 1 is moved forward by the forward traveling of the tractor, the tilling work is performed by the tilling body 11 and the leveling work is performed by the leveling body 16.

  Here, as shown in FIGS. 5 (a) and 5 (b), when the operating body 46 is set to the first state, the normal operation (during the shallow plowing operation) and the deep plowing operation are performed. Also, the tension coil spring 61 urges the first leveling body 18 downward via the connecting body 31. That is, the first leveling body 18 is pressed downward by the urging force of the tension coil spring 61, and the contact pressure between the first leveling body 18 and the field scene increases. As a result, the first leveling body 18 smoothes the unevenness of the farm scene while breaking the clump of the farm scene.

  In addition, the larger the angle α formed between the center line A of the tension coil spring 61 and the line B connecting the rotation fulcrums (shaft portions 35 and 39) on both ends of the first connecting arm 33, the larger the first leveling body 18 is. The ground pressure (pressure applied by the tension coil spring 61) increases. That is, the tension coil spring 61 extends according to the upward rotation of the first connecting arm 33. For this reason, the ground contact pressure of the first leveling body 18 is higher in the deep plowing work shown in (b) than in the normal work shown in (a).

  Also, as shown in FIGS. 6A and 6B, when the operating body 46 is set to the second state, the tension coil spring 61 is the first leveling during the normal operation (in the shallow tillage operation). The body 18 is not urged (meaning including a state where the body 18 is slightly urged downward), and the tension coil spring 61 urges the first leveling body 18 downward during deep plowing work.

  That is, as shown in FIG. 7A, when the operating body 46 is set to the second state, when the tilling depth F of the tilling body 11 is less than the set depth, the tension coil spring 61 is in the first state. The ground leveling body 18 is almost free. As a result, even when the soil in the farm scene is light, the soil does not move in the traveling direction.

  In this unpressurized state, the center line A of the tension coil spring 61 and the line B connecting the rotation fulcrums (shaft portions 35 and 39) on both ends of the first connecting arm 33 are substantially coincided with each other in a side view. The angle α is substantially zero. For this reason, the tension coil spring 61 does not expand and contract when it is integrally rotated with the rotating body 47 and rotated up and down around the shaft portion 53. At this time, there is a gap 80 between the support shaft portion 51 of the operating body 46 and the engaging portion 59 of the rotating body 47.

  However, as shown in FIG. 7B, when the tilling depth F of the tilling body 11 is equal to or greater than the set depth, the support shaft portion 51 of the operating body 46 is engaged with the engaging portion 59 of the rotating body 47. The upper and lower rotations of the rotating body 47 are restricted by the mating contact.

  For this reason, the tension coil spring 61 extends in response to the upward rotation of the first connecting arm 33. As a result, the first leveling body 18 is pressed downward by the urging force of the tension coil spring 61, and the first leveling body The contact pressure with 18 farm scenes increases.

  And according to such a farming machine 1, since it is the structure which does not use the rotation piece etc. which were required conventionally, it is not only a simple structure, but it is hard to produce the malfunction by clogging of soil, etc., and frequent maintenance Is not required, maintenance is easy, and sufficient tension can be obtained by using the tension coil spring 61.

  Further, when the operating body 46 is set to the second state, when the tilling depth F of the tilling body 11 becomes equal to or larger than a preset setting depth, the tension coil spring 61 attaches the first leveling body 18. Since the tension coil spring 61 biases the first leveling body 18 downward from the state where it is not biased, an appropriate leveling work can be performed.

  Further, the machine body 6 has an arc-shaped elongated hole portion 55, and the operating body 46 has a shaft portion 53 inserted into the arc-shaped elongated hole portion 55, and a rotation center axis line passing through the arc center of the arc-shaped elongated hole portion 55. Since the rotation body 47 is configured to be rotatable to the shaft portion 53 of the operation body 46, the rotation body 47 is not only a simple configuration but also easy to maintain. .

  In the first embodiment, the configuration having the rubber plate 17 as the rubber cover has been described. However, as in the second embodiment shown in FIGS. 8 and 9, for example, the rubber plate 17 is provided. Instead, a configuration in which the upper end portion of the first leveling body 18 of the leveling body 16 is rotatably attached to the rear end portion of the side plate portion 23 of the machine body 6 via the shaft portion 20 may be employed.

  FIG. 10 shows a third embodiment.

  The coupling body 31 of the third embodiment has a plurality of attached portions 36, and the other end hooking portion 63 of the tension coil spring 61 is selected from a plurality (for example, three) of the attached portions 36. It is detachably attached to one attached portion 36. Each attached portion 36 may be a hole formed on the side surface of the first connection arm 33, or may be a pin attached to the side surface of the first connection arm 33.

  In this case, the urging force of the tension coil spring 61 can be easily adjusted by selecting and changing the attached portion 36 to which the other end hooking portion 63 of the tension coil spring 61 is attached. The pressure can be adjusted easily.

  FIG. 11 shows a fourth embodiment.

  The coupling body 31 of the fourth embodiment has a plurality of attached portions 36, and the other end hooking portion 63 of the tension coil spring 61 is selected from a plurality (for example, two) of attached portions 36. It is detachably attached to one attached portion 36. One of the two attached portions 36 is a shaft portion 35, and the other is a pin 35 a attached to the side surface of the first connecting arm 33.

  Even in this case, the biasing force of the tension coil spring 61 can be easily adjusted by selectively changing the attached portion 36 to which the other end hooking portion 63 of the tension coil spring 61 is attached, and the ground pressure of the first leveling body 18 can be adjusted. Can be adjusted easily.

  12 and 13 show a fifth embodiment.

  The rotating body 47 according to the fifth embodiment has a substantially triangular plate shape having the arc-shaped hole portion 81, and the same applies to the structure including the rotating body (spring hanging member) 47 having such a shape. The effect of this can be achieved.

  14 and 15 show a sixth embodiment.

  In the sixth embodiment, when the operating body 46 is set to the second state, the tension coil spring 61 biases the first leveling body 18 upward during normal work (in shallow cultivation work). (A state in which the ground pressure of the first leveling body 18 is reduced), and during the deep plowing operation, the tension coil spring 61 biases the first leveling body 18 downward.

  As is clear from FIG. 14, in the normal operation, the spring hole portion 57 is located above the line B connecting the rotation fulcrums (shaft portions 35 and 39) on both ends of the first connecting arm 33. The first leveling body 18 is pressurized upward by the urging force of the tension coil spring 61, and the ground contact pressure with the field scene of the first leveling body 18 decreases. That is, the weight of the first leveling body 18 is reduced by the amount of the urging force of the tension coil spring 61.

  Further, as is clear from FIG. 15, during deep plowing work, the spring hole 57 is positioned below the line B connecting the rotation fulcrums (shaft portions 35, 39) on both ends of the first connection arm 33. Therefore, the first leveling body 18 is pressed downward by the urging force of the tension coil spring 61, and the contact pressure between the first leveling body 18 and the field scene increases. That is, the weight of the first leveling body 18 is increased by the amount of the urging force of the tension coil spring 61.

  In addition, although not shown in figure, you may make it combine the structure of the agricultural working machine 1 of said each embodiment suitably.

  Moreover, the agricultural working machine 1 is not limited to a three-fold folding type, and may have only the central working unit 2.

  Further, the leveling body 16 may not include the second leveling body 19 but may include only the first leveling body 18.

  Further, the biasing body that biases the leveling body 16 may be one using rubber, a fluid pressure cylinder, or the like in addition to the tension coil spring 61 that is an elastic member.

1 Farming machine 6 Airframe
11 Tillage
16 Leveling body
31 Connected body
36 Mounted part
46 Operation body
47 Rotating body
53 Shaft
55 Arc-shaped slot
58 Mounted part
61 Tensile coil spring as biasing body F Tilling depth

Claims (5)

The aircraft,
A plowing body that is provided on this machine and performs plowing work;
A leveling body that performs leveling work behind this tilled body,
A connected body having a mounted portion, one end side connected to the machine body, and the other end side connected to the leveling body;
An operating body that is rotatably provided in the machine body and is selectively set to the first state and the second state;
A rotating body having a mounted portion and rotatably connected to the operating body;
One end side is attached to the attached portion of the rotating body, and the other end side includes an urging body attached to the attached portion of the coupling body,
When the operating body is set to the first state, the biasing body biases the leveling body downward,
When the operating body is set in the second state, the urging body is in a state where it does not urge the leveling body or a state where it urges the leveling body upward. In the case where the operating body is set to the second state, the urging body urges the leveling body downward when the cultivating depth of the cultivating body exceeds the set depth. Item 1. Agricultural machine according to item 1. The coupling body has a plurality of attached portions,
The farm work machine according to claim 1 or 2, wherein the other end side of the urging body is attached to one attached portion selected from the plurality of attached portions. The fuselage has an arc-shaped slot,
The operating body has a shaft portion inserted into the arc-shaped elongated hole portion, and is rotatable about a rotation center axis passing through the arc center of the arc-shaped elongated hole portion,
The agricultural implement according to any one of claims 1 to 3, wherein the rotating body is rotatably connected to the shaft portion of the operating body. The agricultural implement according to any one of claims 1 to 4, wherein the urging body is a tension coil spring.

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