JP4456550B2 - Agricultural machine - Google Patents

Description

  The present invention relates to an agricultural machine that can easily change a non-working state of a soil working body.

Conventionally, for example, a central work machine main body connected to the rear part of a traveling vehicle such as a tractor, and the work machine main body is provided so as to be pivotable in the vertical direction. Agricultural working machines such as a scraping harrow equipped with left and right soil working bodies that are in a state (non-working state) and an intermediate folding state (150-fold state) are known (for example, see Patent Document 1).
JP 2005-65568 A

  However, in the conventional agricultural machine described above, when the non-working state of the earth work body is changed from the folding non-working state (180 degree folding state) to the intermediate folding non-working state (150 degree folding state), and conversely, When changing from the folding non-working state (150-degree folding state) to the folding non-working state (180-degree folding state), the pins must be inserted and removed, and there is a risk of taking time and effort for the changing work.

  This invention is made | formed in view of such a point, and it aims at providing the agricultural machine which can perform the change of the non-working state of a soil working body easily.

  The agricultural machine according to claim 1 is provided with a work machine main body and the work machine main body so as to be rotatable, and when the work machine main body is rotated in the unfolding direction, the unfolding operation state is obtained, and the rotation is approximately 180 degrees in the folding direction. The earth work body that is in a non-folding state due to the rotation and that is in the non-working state by turning the intermediate folding angle of less than 180 degrees in the folding direction, and the earth work body is rotatably provided. A non-working state setting body that is in a state of being positioned at the first position by rotation in one direction and is in a state of being positioned in the second position by rotation in the other direction. When located at the first position, the earth work body is folded into a non-working state by turning about 180 degrees in the folding direction, and the non-working state setting body is located at the second position. In some cases, the earth work body is turned in an intermediate fold by turning at an intermediate fold angle of less than 180 degrees in the fold direction. We are made of a non-work state.

  The farm machine according to claim 2 is the farm machine according to claim 1, wherein the intermediate folding angle of the earth work body in the intermediate folding non-working state can be changed.

  According to the invention according to claim 1, when the non-working state of the earth work body is changed from the folding non-working state to the intermediate folding non-working state, and conversely, from the intermediate folding non-working state to the folding non-working state In the case of changing to the non-working state, the non-working state setting body only needs to be rotated, and it is not necessary to insert / remove the pin. Therefore, the nonworking state of the earth work body can be easily changed.

  According to the invention which concerns on Claim 2, since the intermediate folding angle of the intermediate | middle folding non-working state of an earth work body is changeable, the intermediate folding non-working state of an earth work body is changed as needed. be able to.

  An embodiment of an agricultural machine according to the present invention will be described with reference to FIGS.

  1 to 4, reference numeral 1 denotes a foldable agricultural machine. The agricultural machine 1 is connected to, for example, a three-point link portion (worker lifting support device) at the rear of a tractor that is a traveling vehicle (not shown). It is a three-part folding type scraping device used.

  The farm work machine 1 includes a central work part 2 that is a single work machine body that is longitudinally connected to the three-point link part at the rear part of the tractor, and substantially right and left ends at both right and left ends of the central work part 2. It is provided so as to be able to rotate in the vertical direction around the rotation axis (rotation fulcrum) 4, and is brought into a deployment work state by rotation in the deployment direction around the rotation axis 4. By turning approximately 180 degrees in the tatami direction, the fold is in a non-working state (180 degrees fold state), and the intermediate fold angle is less than 180 degrees in the fold direction (approximately 110 degrees to approximately 150 degrees), for example approximately 150. And an extension working unit 3 that is a left and right earth working body that is in an intermediate folding non-working state (150-degree folding state) by rotation of the degree.

  The left and right extension working parts 3 have a bilaterally symmetric structure and the same length, and are formed in a longitudinal shape in the left-right direction. The length dimension of each extension work part 3 in the left-right direction is, for example, approximately half of the length dimension of the central work part 2 in the left-right direction.

  Here, the central working unit 2 includes a horizontal body 11 that is connected to the three-point link portion at the rear of the tractor, and a tiller (not shown) that is rotatably provided on the body 11 and performs a tilling work. And a leveling body (not shown) that is provided at the rear end portion of the cover portion 12 of the body 11 so as to be vertically rotatable and that performs leveling work behind the tillage body.

  The body 11 has a circular pipe-shaped frame portion 13 that is elongated in the left-right direction. A gear box portion 14 is provided at the approximate center in the left-right direction of the frame portion 13, and an input shaft (not shown) is rotatably provided in the gear box portion 14. The input shaft is connected to the PTO shaft of the tractor T via a universal joint and a transmission shaft. Further, a transmission case portion 15 such as a chain case and a bracket portion 16 are provided at both left and right ends of the frame portion 13 of the body 11, and a tiller is rotatably mounted on the transmission case portion 15 and the bracket portion 16. This cultivator is driven to rotate by power from the input shaft side.

  Further, the attachment plate portions 17 on both the left and right sides of the machine body 11 are engaging bodies for fixing the extension working portion 3 to the central working portion 2 when the extension working portion 3 is folded 180 degrees and 150 degrees. A non-working fixing hook 21 is attached so as to be rotatable about a support shaft 22 between a fixed state and a fixed release state. The non-working fixing hook 21 formed with the engaging recess 23 and the lever bar portion 25 is biased by a biasing means 24 such as a torsion spring so as to be in a fixed state. Further, an elastically deformable lock lever member 26 that locks the non-working fixing hook 21 in a fixed state is attached to the mounting plate portion 17 of the machine body 11. Further, on both the left and right sides of the machine body 11, there are provided substantially plate-like contact receiving portions 30 that contact the extended work portion 3 when the extended work portion 3 is folded 180 degrees (see FIG. 3).

  On the other hand, the tillage body receives a power from the input shaft side from a transmission means constituted by a shaft, a chain, and the like, and rotates in the left-right direction. The drive rotation shaft extends to the drive rotation shaft. And a plurality of tilling claws projecting radially at intervals in the direction. Further, the leveling body is a first leveling plate (level plate) attached to the cover portion 12 of the body 11 via an elastic plate such as a rubber plate, and the first leveling plate is rotated via a horizontal axis. And a second leveling plate (rake) attached thereto.

  Each extension work unit 3 is provided with an extension machine 31 rotatably attached to the end of the machine body 11 of the central work part 2 around the rotation shaft 4, and the center work part 2 provided rotatably on the extension machine 31. An extended cultivated body (not shown) that extends the working width of the cultivated body, and a rear end portion of the cover 32 of the extension machine body 31 that can be turned up and down and is centered behind the extended cultivated body There is an extended leveling body (not shown) that performs leveling work by extending the working width of the leveling body of the working unit 2.

  The extension body 31 has a mounting plate portion 33 at the inner end portion on the central working portion 2 side, and the mounting plate portion 33 has a rotation by human power in one direction (for example, downward, counterclockwise in FIG. 2). A non-working state setting body (regulation) that is placed in the first position by a moving operation and placed in the second position by a turning operation by human power in another direction (for example, upward, clockwise in FIG. 2). The body) 35 is attached so as to be rotatable about a fulcrum pin portion (rotation fulcrum) 36.

  As shown in FIG. 5, the non-working state setting body 35 has a pair of opposed plate portions 40 that are spaced apart from each other, and the opposed plate portions 40 have a first pin portion 41 and a second pin portion that are parallel to each other. 42 and the 3rd pin part 43 are constructed. A spring hooking groove 44 is formed in the second pin portion 42. One end of a coil-like tension spring 45, which is an urging means, is hooked on the spring hooking groove 44 of the second pin portion 42, and the other end of the tension spring 45 protrudes from the spring hooking protrusion 46 protruding from the mounting plate. It is hooked.

  Then, as shown in FIG. 3, the first pin portion 41 of the non-working state setting body 35 receives the biasing force of the tension spring 45 and comes into contact with the first pin receiving portion 47 of the extension machine 31 to set the non-working state. When the body 35 is located at the first position, the extension work unit 3 is folded 180 degrees by rotating approximately 180 degrees in the folding direction.

  When the extension working part 3 is folded 180 degrees, the contact part 48 of the extension machine body 31 comes into contact with the contact receiving part 30 of the machine body 11, and the fulcrum pin part 36 of the non-working state setting body 35 is a non-working fixing hook. The extension working portion 3 that is engaged with the 21 engaging recesses 23 and is folded 180 degrees is fixed to the central working portion 2.

  Further, as shown in FIG. 4, the non-working state setting body 35 is set by the third pin portion 43 of the non-working state setting body 35 receiving the urging force of the tension spring 45 and coming into contact with the third pin receiving portion 49 of the extension machine body 31. When the body 35 is located at the second position, the extension working unit 3 is folded 150 degrees by rotating approximately 150 degrees in the folding direction.

  When the extension working part 3 is folded 150 degrees, the first pin part 41 of the non-working state setting body 35 comes into contact with the pin receiving part 50 of the machine body 11, and the second pin part 42 of the non-working state setting body 35 is non-working. The extension working portion 3 that is engaged with the engaging recess 23 of the fixing hook 21 at the time of working and is folded at 150 degrees is fixed to the central working portion 2.

  As shown in FIG. 2, the attachment plate portion 51 of the extension machine body 31 is an engagement body for fixing the extension work portion 3 to the central work portion 2 when the extension work portion 3 is in the unfolding work state. A fixing hook 52 at the time of work is attached so as to be rotatable between a fixed state and a fixed release state about the support shaft 53. The working fixing hook 52 in which the engaging recess 54 and the lever bar portion 55 are formed is biased by a biasing means 56 such as a torsion spring so as to be in a fixed state. The engaging concave portion 54 of the fixing hook 52 during operation engages with the engaging pin portion 58 of the machine body 11 when the extension working portion 3 is in the unfolding work state.

  On the other hand, the extended tillage body is positioned on the same axis as the drive rotation axis of the tillage body of the central work section 2 when the extension work section 3 is in the unfolding operation state, and is driven by the power from the drive rotation shaft side and extends in the left-right direction. A shaft and a plurality of tilling claws projecting radially from the driven rotating shaft at intervals in the axial direction of the driven rotating shaft. The extended leveling body includes a first extended leveling plate (level plate) attached to the cover portion 32 of the extension machine body 31 of the central working unit 2 via an elastic plate such as a rubber plate, and the first extended leveling plate. And a second extended leveling plate (rake) attached rotatably through a left-right axis.

  In addition, the agricultural working machine 1 is in a state of working with only the central working unit 2, a state of working with the central working unit 2 and one of the left and right extension working units 3, and an extension of both the central working unit 2 and the left and right. It is possible to selectively switch to a state of working with the working unit 3. In addition, the farm work machine 1 includes a gas spring 60 that assists the rotation operation of the extension work unit 3 with respect to the central work unit 2. One end of the gas spring 60 is pivotally attached to the machine body 11 of the central working unit 2, and the other end of the gas spring 60 is pivotally attached to the extension machine body 31 of the extension working unit 3.

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

  For example, when performing a substitute work using the farm work machine 1, the left and right extension work units 3 are set in the unfolding work state. That is, for example, when the left and right extension work parts 3 are in a 180 degree folded state, the left and right extension work parts 3 are rotated about 180 degrees in the deploying direction about the rotation shaft 4 with respect to the center work part 2. Then, the left and right extension working parts 3 are located on both left and right sides of the central working part 2 and are aligned with the central working part 2 along the left and right directions (state shown in FIG. 1).

  At this time, the engaging recess 54 of the fixing hook 52 during operation and the engaging pin portion 58 of the machine body 11 are engaged with each other by the rotation of the extension working portion 3 in the unfolding direction. The working unit 3 is fixed to the central working unit 2. In order to release the fixation, the lever fixing portion 52 may be rotated by holding the lever bar portion 55 to bring the fixation release state.

  When the driving rotary shaft of the central working unit 2 is driven and rotated based on the power from the input shaft side in the unfolded working state of the extension working unit 3, the driven rotary shaft is driven and rotated according to the rotation of the driving rotary shaft, By the rotation of the drive rotation shaft and the driven rotation shaft, the tilling work is performed by the tilling body and the extension tilling body, and the leveling work is performed by the leveling body and the extension leveling body.

  For example, when moving between the fields, the non-working state setting body 35 is rotated about the fulcrum pin part 36 to be positioned at the second position, The extension work part 3 is rotated about 150 degrees in the folding direction about the rotation shaft 4 to bring the extension work part 3 into the 150 degree folded state which is the intermediate folding non-working state (state shown in FIG. 4).

  At this time, the engagement recess 23 of the non-working fixing hook 21 and the second pin part 42 of the non-working state setting body 35 are engaged by the rotation of the extension working part 3 by approximately 150 degrees in the folding direction, By this engagement, the extended working portion 3 in the folded state of 150 degrees is fixed to the central working portion 2. In order to release this fixation, the lever bar 25 may be held and the non-working fixation hook 21 may be rotated to enter the fixation release state.

  Further, after the work is completed, when the agricultural work machine 1 is transported to the work machine storage position in the warehouse or the like, the non-work state setting body 35 is rotated about the fulcrum pin portion 36 to be positioned at the first position. From the central working unit 2, the left and right extension working units 3 are rotated about 180 degrees in the folding direction about the pivot shaft 4, and the extension working unit 3 is folded in a 180 degree folded state. (State shown in FIG. 3).

  At this time, the engagement recess 23 of the non-working fixing hook 21 and the fulcrum pin part 36 of the nonworking state setting body 35 are engaged by the rotation of the extension working part 3 by approximately 180 degrees in the folding direction. The extended working part 3 that is folded 180 degrees is fixed to the central working part 2 by the engagement. In order to release this fixation, the lever bar 25 may be held and the non-working fixation hook 21 may be rotated to enter the fixation release state.

  And, according to the agricultural work machine 1, when changing the non-working state of the extension work unit 3 from the 180 degree folded state to the 150 degree folded state, and conversely when changing from the 150 degree folded state to the 180 degree folded state, Since it is only necessary to rotate the non-working state setting body 35 and there is no need to insert / remove the pins, the non-working state of the extension working unit 3 can be changed very easily. However, it is possible to easily switch between the 180 degree folded state and the 150 degree folded state by a one-touch operation.

  In the above-described embodiment, the configuration in which the intermediate folding angle of the extension working unit 3 in the intermediate folding non-working state is only about 150 degrees has been described. However, for example, a plurality of intermediate folding angles can be set and the extension work can be performed. It can also be set as the structure which can change the intermediate | middle folding angle of the intermediate | middle folding non-working state of the part (earth work body) 3. FIG.

  In the agricultural working machine 1 shown in FIGS. 6 to 10, the intermediate folding angle of the extension working unit 3 can be changed from, for example, approximately 150 degrees to approximately 140 degrees by inserting and removing the pins. It is also possible to return the intermediate folding angle from approximately 140 degrees to approximately 150 degrees by inserting and removing the pins.

  The non-working state setting body 35 shown in FIG. 6 and the like has two first hole portions 150-degree folding holes 61, 62 and two second hole portions 140-degree folding holes 63, 64. have.

  As shown in FIG. 9, when the fulcrum pin portion 36 and the third pin portion 43 are detachably inserted into the 150-degree folding hole portions 61 and 62, respectively, the extension working portion 3 causes the rotating shaft 4 to move. By turning about 150 degrees in the center folding direction (intermediate folding angle), the folding state is 150 degrees, and as shown in FIG. 10, the fulcrum pin portion 36 and the third pin portion 43 are each folded at 140 degrees. When inserted into the holes 63 and 64 in a detachable manner, the extension working part 3 is folded 140 degrees by turning about 140 degrees (intermediate folding angle) in the folding direction around the turning shaft 4. It becomes a state.

  That is, in the agricultural machine 1 shown in FIGS. 6 to 10, the intermediate folding non-working state of the extension working part 3 is set to the 140 degree folded state and the 150 degree folded state by inserting / removing the fulcrum pin part 36 and the third pin part 43. It can be selected and set to either. Other configurations are basically the same as those shown in FIG.

  And in the agricultural work machine 1 shown in FIGS. 6 to 10, as in the case shown in FIG. 1 and the like, when changing the non-working state of the extension work unit 3 from the 180 degree folded state to the 150 degree folded state or the 140 degree folded state, On the contrary, when changing from the 150 degree folded state or the 140 degree folded state to the 180 degree folded state, it is only necessary to rotate the non-working state setting body 35, and it is not necessary to insert / remove the pin. The non-working state of the unit 3 can be changed very easily. For example, even an elderly person can easily switch between the 180 degree folded state and the 150 degree folded state or the 140 degree folded state by a one-touch operation. Can do.

  Although not shown, for example, the intermediate folding non-working state of the extension working unit 3 is selected from three states (or four or more states), for example, one of 110 degree folded state, 140 degree folded state, and 150 degree folded state It may be settable.

  Further, the farm work machine 1 may be one provided with a soil work body (extension work part) only on either the left or right side, or one that does not perform soil work such as scraping work in the central work machine body.

It is a whole front view showing one embodiment of the agricultural machine of the present invention. It is a partial front view of a farm work machine same as the above. It is a partial front view at the time of a 180 degree | times folding state of an agricultural working machine same as the above. It is a partial front view at the time of a 150 degree | times folding state of an agricultural working machine same as the above. It is a figure which shows the non-working state setting body of an agricultural working machine same as the above. It is a partial front view which shows other embodiment of the agricultural machine of this invention. It is a partial front view of a farm work machine same as the above. It is a partial front view at the time of a 180 degree | times folding state of an agricultural working machine same as the above. It is a partial front view at the time of a 150 degree | times folding state of an agricultural working machine same as the above. It is a partial front view at the time of a 140 degree | times folding state of an agricultural working machine same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Agricultural working machine 2 Central working part which is working machine main body 3 Extension working part which is earth working
35 Non-working state setting body

Claims (2)

The work machine body,
This work machine body is provided so as to be able to rotate, and when it is rotated in the unfolding direction, it is in the unfolding working state, and when it is rotated approximately 180 degrees in the folding direction, it is in the non-folding working state. A soil work body that is in an intermediate folding non-working state by rotation of an intermediate folding angle of less than 180 degrees;
A non-working state setting body which is provided on the earth work body so as to be rotatable and is located at the first position by turning in one direction and is located at the second position by turning in the other direction. And
When the non-working state setting body is located at the first position, the earth work body is in a folding non-working state by turning about 180 degrees in the folding direction,
When the non-working state setting body is located at the second position, the earthworking body is in an intermediate folding non-working state by turning an intermediate folding angle of less than 180 degrees in the folding direction. Agricultural working machine characterized. The agricultural machine according to claim 1, wherein an intermediate folding angle of the soil working body in an intermediate folding non-working state is changeable.

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