JP5955065B2 - Agricultural machine - Google Patents

Description

  The present invention relates to an agricultural machine capable of easily connecting to a traveling vehicle.

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

  This conventional farm work machine is provided on a connection frame that is detachably connected to a traveling vehicle such as a tractor, a work machine main body to which the connection frame is attached to be movable up and down, and a main body frame of the work machine main body. A stand and a work posture adjusting body such as a turnbuckle for moving the work machine main body up and down relative to the connecting frame are provided.

Japanese Utility Model Publication No. 63-193403 (FIG. 1)

  However, in the above conventional farm work machine, for example, when the farm work machine is coupled to a traveling vehicle, the work machine body is connected to the connecting frame by the work posture adjusting body in order to adjust the work posture (ground posture) of the work machine body. For example, when the vehicle is moved up and down, the direction (angle) of the connecting frame may be out of the range where the traveling vehicle can be connected.

  In such a case, the connection frame cannot be connected to the traveling vehicle as it is in the next operation, and therefore there is a risk that it will take time to connect the agricultural working machine to the traveling vehicle.

  This invention is made | formed in view of such a point, and it aims at providing the agricultural machine which can perform the connection operation | work to a traveling vehicle easily.

The agricultural machine according to claim 1 is an agricultural machine connected to a traveling vehicle, a connection frame detachably connected to the traveling vehicle, and a work machine main body to which the connection frame is attached so as to be movable up and down. A stand provided on the connection frame; and an adjustment body for moving the work machine body up and down relative to the connection frame, and the work machine body is moved relative to the connection frame by the adjustment body during work. Even when the farmer is moved up and down, the direction of the connecting frame is always constant when using the stand with the farm machine removed from the traveling vehicle .

  The farm machine according to claim 2 is the farm machine according to claim 1, wherein the connection frame has stand attachment portions to which the stand is detachably attached on both left and right sides.

The agricultural machine according to claim 3 is the agricultural machine according to claim 2, wherein the stand mounting portion of the connection frame is configured by a square pipe-shaped arm portion, and the stand is slid along the outer peripheral surface of the arm portion. It has a cylindrical part fitted to the outer peripheral side of the lever part.

The agricultural machine according to claim 4 is the agricultural machine according to claim 2, wherein the stand mounting portion of the connection frame includes a square pipe-shaped arm portion, and a U-shaped stand holder portion fixed to the arm portion. It is comprised by.

According to the present invention, for example, even when the work implement body is moved up and down with respect to the connection frame by the adjusting body during work, the orientation of the connection frame is always maintained when using the stand with the agricultural work machine removed from the traveling vehicle. Since it is constant, the connection frame can be directly connected to the traveling vehicle in the next work, and the connection work to the traveling vehicle can be facilitated.

It is a top view at the time of the non-working (at the time of stand use) of the agricultural working machine concerning one embodiment of the present invention. It is a top view at the time of advance work of a farm work machine same as the above. It is a top view at the time of the reverse operation | work of an agricultural working machine same as the above. It is a fragmentary perspective 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 explanatory drawing at the time of working posture adjustment of a farm working machine same as the above. It is a fragmentary perspective view of the agricultural working machine which concerns on other embodiment of this invention. It is a partial top view of an agricultural working machine same as the above.

  An embodiment of the present invention will be described with reference to the drawings.

  In the figure, reference numeral 1 denotes an agricultural machine. The agricultural machine 1 is connected to a rear portion of a tractor (not shown), for example, a traveling vehicle, and travels along the ridge of the farm field by traveling of the tractor (frontward during forward operation, This is a paddy machine that performs padding work (offset work) that is agricultural work while moving backward) during reverse work.

  As shown in FIGS. 1 to 5, the farm work machine 1 is a vertically rotating frame that is detachably connected to a three-point link hitch part (worker lifting support part) that is a work machine connection part at the rear of the tractor. A connection frame (front frame) 3 and a work machine body 5 attached to the front end of the connection frame 3 so as to be pivotable up and down about a horizontal axis (rotation fulcrum) 4 are provided.

  The agricultural machine 1 also has a stand 6 detachably provided on both the left and right sides of the connecting frame 3 and a working time when the connecting frame 3 is connected to the three-point link hitch portion of the tractor (the stand is not used). In order to adjust the working posture (ground posture) of the working machine main body 5, the working machine main body 5 is rotated up and down about the left and right axis 4 with respect to the connected connecting frame 3. And a working posture adjusting body (adjusting body) 8 which is a manual adjusting body.

  The connecting frame 3 as a hitch frame has a frame main body portion 13 having a center top pin 11 and left and right lower pins 12. An input shaft 14 in the front-rear direction connected to the PTO shaft of the tractor via a joint or the like is rotatably provided at the center of the frame main body 13.

  Moreover, the connection frame 3 has the left-right direction stand attachment part 15 to which the upper end part of the stand 6 was attached so that attachment or detachment was possible on both right and left sides. The stand attachment portion 15 is composed of only an arm portion 18 that is a square pipe-like projecting portion that projects horizontally from the vertical plate 16 of the frame main body portion 13 outward, for example. Note that a pin hole 19 is formed in the stand attachment portion 15.

  The stand 6 has, for example, a shape that has a substantially inverted T shape in a side view. That is, the stand 6 has a first longitudinal portion 21 having a longitudinal direction that is grounded to a grounding surface such as the ground, and a longitudinally long first portion 21 is provided at a middle portion of the first longitudinal portion 21 in the longitudinal direction. Two longitudinal portions 22 are erected.

  At the upper end of the second longitudinal portion 22, a rectangular tubular portion 23 is fixedly fitted to the outer peripheral side of the stand mounting portion 15 of the connecting frame 3 so as to be detachable. A pin hole (not shown) is formed in the cylindrical portion 23, and a mounting pin 25 serving as a mounting means for the pin hole of the cylindrical portion and the pin hole 19 of the stand mounting portion 15 that are coincident with each other. Is inserted in a removable manner.

  When the stand 6 is attached to the stand attachment portion 15 of the connecting frame 3, the cylindrical portion 23 is slid inward in one direction along the outer peripheral surface of the stand attachment portion 15. After fitting on the outer peripheral side, the mounting pin 25 is inserted from above into the pin hole of the cylindrical portion 23 and the pin hole 19 of the stand mounting portion 15 that are coincident with each other.

  When the stand 6 is detached from the stand attachment portion 15 of the connecting frame 3, the tubular portion 23 is in the other direction along the outer peripheral surface of the stand attachment portion 15 after removing the attachment pin 25 from the pin hole. By sliding outward, the fitting with the stand mounting portion 15 is released.

  Thus, the pair of left and right stands 6 can be easily attached to and detached from the stand mounting portion 15 of the connection frame 3 without using a tool.

  The work machine main body 5 has a main body frame (rear frame) 31 attached to the upper part of the left and right plates 16 of the frame main body portion 13 of the connecting frame 3 so as to be rotatable in the vertical direction about the horizontal axis 4. doing. That is, the connecting frame 3 is attached to the front end of the main body frame 31 so as to be pivotable in the vertical direction about the shaft 4, and the front connecting frame 3 and the rear main body frame 31 form a double frame structure. Yes. The connecting frame 3 and the main body frame 31 of the work machine main body 5 are connected by a working posture adjusting body 8 which is a connecting means provided between the frames 3 and 31.

  In addition, a support frame 33 that supports working means 32 for performing a smearing operation is attached to the main body frame 31 via a connecting means 35 such as a rotating arm 34. The front end portion of the rotation arm 34 is attached to the center portion of the main body frame 31 so as to be rotatable about a vertical axis 36. A support frame 33 is attached to the rear end portion of the rotating arm 34 so as to be rotatable about a vertical axis 37.

  Then, the working means 32 supported by the support frame 33 is in a forward working state in which the haze is applied while moving in the traveling direction by the forward traveling of the tractor based on the expansion and contraction operation of the electrohydraulic cylinder 40 as the driving means (see FIG. 2), a reverse working state (see FIG. 3) in which the tractor is moved in the advancing direction by reverse running (back running), and a non-working state (see FIG. 1) located behind the tractor. Can be selectively switched.

  Here, the working means 32 includes a banking part (rotary part) 41 that plows and builds up the soil of the paddy field and paddy (general) while rotating, and a banking by the banking part 41 while rotating behind the banking part 41 in the traveling direction. And a ridge forming portion (disk portion) 42 that forms a ridge (new ridge) by compacting and a top surface cutting portion 43 that cuts the upper surface of the ridge (former ridge) while rotating in the forward direction of the embankment portion 41. ing.

  The embankment portion 41 has a rotation shaft that is rotatably provided on the support frame 33. A embankment nail is attached to the rotation shaft, and the upper side of the embankment nail is covered with a cover body 44.

  The ridge forming portion 42 has a rotation shaft 45 rotatably provided on the support frame 33, and a truncated cone-shaped ridge side surface forming body 46 and a cylindrical ridge surface forming body 47 are attached to the rotation shaft 45. ing.

  The upper surface shaving portion 43 has a rotating shaft that is rotatably provided on the support frame 33, and an upper surface shaving claw is attached to the rotating shaft, and the upper side of the upper surface shaving claw is covered with a cover body 48.

  The work posture adjusting body 8 is the front and back posture of the work machine body 5 according to the size of the tractor and the like, independently of the hydraulic lever of the tractor, during work when the agricultural work machine 1 is connected to the tractor. It is an adjusting means for adjusting the working posture.

  The working posture adjusting body 8 protrudes from a screw-type expansion / contraction part 51 that is a longitudinal connection part that can extend and contract in the longitudinal direction connecting the connection frame 3 and the main body frame 31, and a rear end part of the expansion / contraction part 51. A rotatable handle portion (posture adjusting screw handle) 52 is provided.

  The front end of the telescopic part 51 is connected to the connecting frame 3 so as to be rotatable via a left / right shaft 53, and the rear end part of the telescopic part 51 is pivoted to the main body frame 31 via a left / right shaft 54. Connected as possible. The stretchable part 51 has an outer cylinder 51a and an inner cylinder 51b that goes in and out of the outer cylinder 51a.

  Then, as shown in FIG. 6, when the agricultural work machine 1 is connected to the tractor, when the handle portion 52 is rotated in one direction to extend the telescopic portion 51, the work is performed on the connecting frame 3 connected to the tractor. The machine body 5 rotates downward about the shaft 4 by an amount corresponding to the amount of extension of the telescopic part 51.

  Further, when the handle portion 52 is rotated in the other direction to contract the expansion / contraction portion 51, the work machine body 5 moves the shaft 4 by an amount corresponding to the contraction amount of the expansion / contraction portion 51 with respect to the connection frame 3 connected to the tractor. Rotate upward to the center.

  Thus, the working posture of the work implement body 5 can be easily adjusted by operating the handle portion 52 of the working posture adjusting body 8 without using a tool.

  Next, the operation and the like of the farm work machine 1 will be described.

  As shown in FIG. 2, when the working means 32 of the work machine body 5 is set to the forward working state and the agricultural work machine 1 is moved in the traveling direction by the forward traveling of the tractor, the upper surface shaving unit 43 shaves the upper surface of the ridge, 41 cultivates the soil and raises it to the ridge, and the ridge forming section 42 compacts the bank to form a ridge.

  Further, at the corner of the farm field, as shown in FIG. 3, after the working means 32 of the work implement body 5 is switched from the forward working state to the backward working state, the agricultural working machine 1 is moved in the traveling direction by the backward running of the tractor. Then, the upper surface shaving portion 43 shaves the upper surface of the ridge, the embankment portion 41 plows the soil and raises it to the ridge, and the ridge forming portion 42 compacts the embankment to form a ridge.

  Here, the farming machine 1 connected to the tractor in this way performs the hulling work, but before starting this hulling work, the worker can change the working posture of the work machine body 5 (if necessary). Adjust the ground posture.

  When adjusting the front-rear posture, which is the work posture of the work machine body 5, the operator rotates the handle portion 52 of the work posture adjuster 8 by a desired amount in either one direction or the other direction to expand and contract. The unit 51 is operated.

  When the telescopic part 51 of the work posture adjusting body 8 extends, the work machine body 5 rotates downward with respect to the connection frame 3 connected to the tractor. When the telescopic part 51 of the working posture adjusting body 8 is contracted, the work machine body 5 rotates upward with respect to the connecting frame 3 connected to the tractor.

  Then, after the finishing operation, the operator switches the working means 32 of the work machine body 5 to the non-working state and then attaches the left and right stand of the connecting frame 3 connected to the tractor as shown in FIG. The stand 6 is attached to the part 15.

  After the stand 6 is attached, the entire agricultural work machine 1 is lowered by the downward movement of the three-point link hitch portion of the tractor, and the lower surface of the first elongated portion 21 of the stand 6 is grounded to the ground surface such as the ground. Thereafter, the connection between the three-point link hitch portion of the tractor and the connection frame 3 is released, and the connection between the PTO shaft of the tractor and the input shaft 14 is released.

  As a result, the work machine body 5 is supported by the pair of left and right stands 6 via the connection frame 3. For this reason, even when the handle portion 52 of the work posture adjusting body 8 is operated in this state, the connecting frame 3 remains constant without moving, and the work machine body 5 moves up and down with respect to the connecting frame 3.

  And according to such an agricultural working machine 1, the working machine main body 5 was rotated up and down with respect to the connection frame 3 for working posture adjustment according to the tractor by the working posture adjusting body 8 at the time of working, for example. Even in this case, when using the stand from which the farm work machine 1 is removed from the tractor, the direction (angle) of the connecting frame 3 is always constant. It can be connected to the point link hitch part, and the connection work to the tractor can be facilitated.

  In other words, when the stand 6 is mounted on both sides of the connecting frame 3, the angle of the input shaft 14 is related to the length of the expansion / contraction part 51 of the working posture adjusting body 8 that connects the connecting frame 3 and the main body frame 31. There is always a constant angle. In other words, the direction of the connecting frame 3 directly supported by the stand 6 is always a fixed direction.

  For this reason, for example, no matter how much the length of the expansion / contraction part 51 is adjusted at the time of operation, it is not necessary to readjust the length of the expansion / contraction part 51 when connecting to the tractor. The three-point link hitch part can be easily and reliably attached and detached.

  In the above-described embodiment, a description has been given of a slide-type configuration in which the stand (horizontal insertion type stand) 6 is slidable with respect to the stand mounting portion 15 of the connection frame 3. For example, as shown in FIGS. In addition, a holder type configuration in which the stand (hanging type stand) 6 can be attached to and detached from the stand holder portion 60 of the stand mounting portion 15 of the connection frame 3 may be adopted.

  In this configuration, the stand attachment portion 15 of the connecting frame 3 is constituted by an arm portion 18 and a stand holder portion 60 having a U-shaped cross section fixed to the front surface of the arm portion 18. A bearing recess 61 that opens upward is formed at the upper end of the stand holder portion 60. A pin hole 63 is formed in the lower portion of the stand holder portion 60.

  Also, a left and right insertion shaft 62 that is removably inserted into the bearing recess 61 is fixed to the upper end of the second longitudinal portion 22 of the stand 6. A pin hole (not shown) is formed in the vicinity of the upper end of the second longitudinal portion 22, and the pin hole of the second longitudinal portion 22 and the pin hole 63 of the stand holder portion 60 that are coincident with each other are formed. On the other hand, the mounting pin 25 is removably inserted.

  And when attaching the stand 6 to the stand attachment part 15 of the connection frame 3, after inserting the insertion shaft 62 of the stand 6 in the bearing recessed part 61 of the stand holder part 60, the stand holder part which the attachment pin 25 corresponded mutually. 60 pin holes 63 and the second elongated portion 22 are inserted from the outside into the pin holes.

  When the stand 6 is detached from the stand mounting portion 15 of the connecting frame 3, the mounting pin 25 is removed from the pin hole, and then the stand 6 is lifted to insert the insertion shaft 62 from the bearing recess 61 of the stand holder portion 60. Pull upward.

  Thus, even with the holder-type configuration shown in FIGS. 7 and 8, the pair of left and right stands 6 can be easily attached to and detached from the stand mounting portion 15 of the connecting frame 3 without using a tool.

  Moreover, in any embodiment, the farm work machine 1 is not limited to a paddle coater, and the type of the farm work machine such as a ditching machine, a disk rotary, a seeding machine, or a fertilizer machine is arbitrary.

  Further, the connection frame 3 is not limited to the configuration in which the connection frame 3 is attached to the main body frame 31 of the work machine body 5 so as to be rotatable in the vertical direction. For example, the connection frame is attached to the work machine body so as to be movable in the vertical direction. However, in this case, the work height which is the work posture of the work machine main body is adjusted by the work posture adjusting body.

  Further, the working posture adjusting body 8 is not limited to the one having the handle portion 52, and may be, for example, one having a rack and a pinion, one having a turnbuckle, or one having a pin inserted and removed.

  Furthermore, the work posture adjusting body 8 is not a manual type, and may have a drive source such as an electric motor or an electric hydraulic cylinder, and the work machine body 5 may be moved up and down with respect to the connection frame 3 by remote control operation.

  Further, the stand 6 is not limited to a detachable one, and for example, a configuration in which the stand 6 is provided on the connecting frame 3 so as to be rotatable between an operating position and a non-operating position may be used.

DESCRIPTION OF SYMBOLS 1 Agricultural work machine 3 Connection frame 5 Work machine main body 6 Stand 8 Working posture adjustment body which is adjustment body
15 Stand mount
18 arms
23 cylindrical part
60 Stand holder

Claims (4)

An agricultural machine connected to a traveling vehicle,
A connecting frame which is detachably connected to the vehicle,
A work machine body on which the connecting frame is mounted so as to be movable up and down;
A stand provided on the connection frame;
An adjustment body for moving the work implement main body up and down with respect to the connection frame ;
Even when the work implement main body is moved up and down with respect to the connection frame by the adjustment body during work, the orientation of the connection frame is always constant when using the stand with the farm work machine removed from the traveling vehicle. agricultural machine, characterized in that it. The agricultural machine according to claim 1, wherein the connection frame has stand attachment portions on both the left and right sides to which the stand is detachably attached. The stand mounting part of the connecting frame is composed of square pipe-shaped arms,
The stand has a cylindrical portion that is slid along the outer peripheral surface of the arm portion and is fitted to the outer peripheral side of the arm portion.
The agricultural machine according to claim 2, wherein: The stand mounting portion of the connecting frame is composed of a square pipe-shaped arm portion and a stand holder portion having a U-shaped cross section fixed to the arm portion.
The agricultural machine according to claim 2, wherein:

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