JP4881217B2 - Agricultural machine - Google Patents

Description

  The present invention relates to an agricultural machine that can easily change the working depth of a soil working body.

  2. Description of the Related Art Conventionally, as a farm work machine that is used by being connected to a work machine lifting support part (three-point link hitch part) at the rear of a tractor that is a traveling vehicle, for example, a partial deep tiller (subsoiler work machine) described in Patent Document 1 below. It has been known.

  The partial deep cultivator described in Patent Document 1 includes a work implement body that has a pin insertion hole portion and is connected to a work implement lifting support portion of a tractor, and a plurality of holes that are arranged in different vertical positions at different height positions. On the upper end side so as to be movable up and down with respect to the work machine body, and a soil working body that performs soil crushing work that is earth work in a state where the lower end side is inserted below the ground surface, and a hole and a pin that face each other And a lock pin that is removably inserted into the insertion hole and restricts the vertical movement of the earth work body relative to the work machine body.

For example, when changing the working depth of the earth working body from one working depth to another working depth shallower than the one working depth, a hole corresponding to the one working depth facing each other and After removing the pins from the pin insertion hole, the earth work body is moved up to a desired height with respect to the work machine body with 2 to 3 workers, and in this state, the other work depths facing each other are set. A pin is inserted into the corresponding hole and pin insertion hole.
JP-A-9-322601 (FIG. 3 etc.)

  However, in the above conventional farm work machine, it is necessary to lift a relatively heavy earth work body to a desired height with respect to the work machine main body with 2 to 3 workers, and the work depth of the earth work body can be changed. It takes time and effort.

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

  The agricultural machine according to claim 1 has a pin contact part and a pin insertion hole part, and a work machine body connected to the work machine lifting support part of the traveling vehicle, and a plurality of first hole parts having different height positions. And a plurality of second holes corresponding to the plurality of first holes, provided so as to be movable up and down with respect to the work implement body, and at least partially inserted in the ground surface And a first pin that is removably inserted into the first hole and regulates downward movement of the earth working body relative to the work machine body by contact with the pin contact portion. A working depth of the soil working body, comprising: a second pin that is removably inserted into the opposing second hole portion and the pin insertion hole portion and restricts the vertical movement of the soil working body with respect to the work machine body. Is changed from one working depth to another working depth, the second pins are connected to each other. The work implement main body is lowered by the operation of the work implement lifting support portion after the removal of the second pin and the removal of the second pin according to the one working depth. The lower end of the earth work body is applied to the ground surface to move the earth work body up with respect to the work machine body, and then the first pin is moved to the first hole corresponding to the one work depth. The first pin is brought into contact with the pin abutting portion by changing the first hole portion corresponding to the other working depth from the portion and then raising the work implement body by operating the work implement lifting support portion. The earth work body is moved down with respect to the work implement main body until it comes into contact, and then the second pin is inserted into the second hole portion and the pin insertion hole portion corresponding to the other working depths facing each other. To do.

  The agricultural machine according to claim 2 is the agricultural machine according to claim 1, further comprising an additional earth work body that is detachably attached to the work machine body and performs earth work behind the earth work body, The first pin is removably inserted, the first pin is inserted into the third hole, and the first pin and the pin contact portion are in contact with each other; and The additional earth work body is attached to and detached from the work implement body when the entire earth work body is located on the ground surface.

  The agricultural machine according to claim 3 is the agricultural machine according to claim 1 or 2, wherein the earth working body has a vertically long knife and a chisel provided at the lower end of the knife.

  According to the invention which concerns on Claim 1, it is not necessary to lift a comparatively heavy earth working body with respect to a working machine main body manually, and the working depth of an earth working body can be changed easily.

  According to the invention which concerns on Claim 2, not only the working depth of a soil working body can be changed easily, but an additional soil working body can be easily attached or detached with respect to a working machine main body.

  According to the invention which concerns on Claim 3, the working depth of the comparatively heavy earth working body which has a knife and a chisel can be changed easily.

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

  1 to 6, reference numeral 1 denotes an agricultural machine. The agricultural machine 1 is connected to a work machine lifting support portion 3 at the rear of a tractor 2 that is a traveling vehicle, and moves forward by the forward traveling of the tractor 2, for example. It is a partial deep tiller such as a subsoiler that crushes soil.

  The tractor 2 includes a tractor body (not shown) that is a vehicle body. Wheels 5 as traveling wheels are rotatably provided on the left and right sides of the front and rear portions of the tractor body. At the rear end portion of the tractor body, a work machine lifting support portion 3 such as a three-point link hitch portion that supports the agricultural work machine 1 so as to be lifted and lowered is provided. The work implement lifting and lowering support section 3 includes an upper link 8 and a left and right lower link 9 that are rotated up and down around the rotation fulcrums 6 and 7 on the front end side by hydraulic means (not shown).

  The farm work machine 1 is provided with a work machine main body 11 detachably connected to the work machine lifting support part 3 at the rear of the tractor 2, and is provided on the work machine main body 11 so as to be movable up and down with respect to the work machine main body 11. A part, that is, for example, the lower end side is inserted below the ground surface G, and a vertically long earth work body 12 that performs soil crushing work that is earth work in a state set to a desired work depth according to the state of the field. And.

  The work machine main body 11 has a main frame portion 14 that is formed in, for example, a rectangular pipe and is formed in the left-right direction. The main frame portion 14 is provided with a three-point connecting portion 15 which is a traveling vehicle connecting portion connected to the work implement lifting support portion 3 of the tractor 2. The three-point connecting portion 15 includes an upper connecting portion 16 that is rotatably connected to the upper link 8 and left and right lower connecting portions 17 that are rotatably connected to the lower link 9. Further, the main frame portion 14 is provided with a holding portion 18 that holds the earth work body 12 so as to be movable up and down. The holding part 18 has an opening 19 that opens in the vertical direction, and the upper end side of the earth working body 12 is fitted into the opening 19 so as to be slidable in the vertical direction along the opening 19. In addition, a pin insertion hole portion 21 that opens in the left-right direction is formed in a substantially central portion of the holding portion 18 (see FIG. 2 and the like). Further, a pin contact portion 22 is formed on the upper surface portion of the holding portion 18.

  The earth work body 12 includes a knife 25 such as a vertically long shank, and a claw claw that is provided at the lower end of the knife 25 and performs soil crushing work while moving below the ground surface G in the soil of the field. And a chisel 26. The knife 25 has a plate shape in which the left-right direction of the farm work machine 1 is the thickness direction, and is inserted into the opening 19 of the holding part 18 of the work machine body 11 so as to be slidable in the vertical direction along the opening 19. Yes.

  On the upper rear side of the knife 25, a plurality of, for example, five first holes 28 that are open in the left-right direction and have different height positions, for example, are formed side by side at equal intervals. . In addition, on the upper front side of the knife 25, a plurality of, for example, five second holes 29 having different height positions corresponding to the plurality of first holes 28 are provided at equal intervals. And formed side by side in the vertical direction. These five second hole portions 29 are arranged so as to be shifted downward with respect to the corresponding five first hole portions 28, for example, the first second hole portion 29 and the fourth first hole portion 28 from the top. Are located at approximately the same height.

  Further, the farm work machine 1 is removably inserted into the first hole 28 of the knife 25 of the earth work body 12 and is brought into contact with the pin contact portion 22 of the work machine body 11 so that the work machine body of the earth work body 12 can be removed. Up and down movement of the earth work body 12 with respect to the work machine main body 11 detachably inserted into the first pin 31 such as a stopper pin for restricting the downward movement relative to 11 and the second hole 29 and the pin insertion hole 21 facing each other. And a second pin 32 such as a stop pin for regulating the movement. The vertical position of the earth work body 12 with respect to the work machine body 11 can be adjusted by changing the insertion positions of the first pin 31 and the second pin 32, and the work depth of the earth work body 12 can be adjusted according to the state of the field, etc. Can be changed.

  Next, referring to the drawing, the working depth of the earth work body 12 is changed from one working depth A shown in FIG. 1 to another working depth B shown in FIG. 6 which is shallower than the one working depth A. To explain.

  First, the worker lifts the work implement body 11 from the working state of one working depth A shown in FIG. The second pin 32 is removed from the second hole portion 29 and the pin insertion hole portion 21 corresponding to one working depth A facing each other on the surface G, that is, for example, a field scene. This state is shown in FIG. 2, and in this state, the first pin 31 restricts the downward movement of the earth work body 12 relative to the work machine body 11, but since the second pin 32 is removed, the earth work The body 12 can move up with respect to the work machine main body 11.

  When the entire earth work body 12 is located on the ground surface G, the earth work body 12 is supported by the first pin 31 and the second pin 32 is not loaded, so the second pin 32 is easily removed. It is possible.

  Next, as shown in FIG. 3, the worker lowers the work implement main body 11 by operating the work implement lifting support portion 3 of the tractor 2 while the second pin 32 is removed, and thereby the earth work implement 12 is removed. After the chisel 26 at the lower end is brought into contact with the ground surface G, the earth work body 12 is moved up with respect to the work machine body 11, and then the first pin 31 is removed from the first hole 28 corresponding to one working depth A. It replaces with the 1st hole 28 according to the other working depth B. That is, when the work implement main body 11 is lowered by the work implement lifting support portion 3 of the tractor 2, the earth work body 12 is pushed against the ground surface G by contact with the ground surface G and is raised above the work implement main body 11. The five first holes 28 are all positioned above the holding portion 18 of the work machine body 11. In this state, the operator removes the first pin 31 from the first hole portion 28 corresponding to one work depth A, and this removed first pin 31 is now changed to the other work depth B. Insert into one hole 28.

  Next, as shown in FIG. 4, the operator raises the work implement body 11 by operating the work implement lifting support portion 3 of the tractor 2 to insert it into the first hole portion 28 corresponding to another work depth B. The earth work body 12 is moved downward with respect to the work machine body 11 until the first pin 31 thus made contacts with the pin contact part 22 of the holding part 18, and the first pin 31 is moved further by raising the work machine body 11. After pushing up at the pin abutting portion 22 to lift the entire earth working body 12 from the ground surface G and positioning it on the ground surface G, as shown in FIG. It inserts in the 2nd hole 29 according to B, and the pin insertion hole 21.

  That is, when the work implement body 11 is raised by the work implement lifting support portion 3 of the tractor 2, the earth work body 12 moves down with respect to the work implement main body 11, and the first hole portion corresponding to the other work depth B is obtained. The first pin 31 inserted into 28 abuts on the pin abutting portion 22 of the holding portion 18 of the work machine body 11. When the first pin 31 and the pin contact portion 22 come into contact with each other, the second hole portion 29 and the pin insertion hole portion 21 corresponding to other working depths B face each other. When the second pin 32 is inserted into the second hole 29 and the pin insertion hole 21 corresponding to the other working depth B facing each other, the work of the earth work body 12 is performed by the second pin 32. Vertical movement with respect to the machine body 11 is restricted.

  Then, as shown in FIG. 6, when the work implement body 11 is lowered by the work implement lifting support portion 3 of the tractor 2 and then the tractor 2 is caused to travel forward, the earth work body 12 has another working depth B. Soil crushing work is performed in the working state.

  Thus, according to the agricultural work machine 1, unlike the conventional case, it is not necessary for the worker to manually lift the relatively heavy earth work body 12 with respect to the work machine body 11, and the working depth of the earth work body 12 can be easily achieved. It can be changed and the burden on the operator can be reduced.

  Further, since the downward movement of the earth work body 12 with respect to the work machine main body 11 is restricted by the contact between the first pin 31 and the pin contact portion 22, the earth work body 12 can be removed even if the second pin 32 is accidentally pulled out. It does not fall and has excellent safety.

  Next, another embodiment of the agricultural machine according to the present invention will be described with reference to FIGS.

  The farm work machine 1 shown in FIGS. 7 to 13 is configured such that an additional earth work body 41 such as a rotary that performs earth work behind the earth work body 12 can be detachably attached to the work machine main body 11. Note that the same reference numerals are given to the same components as those in the first embodiment, and the description thereof is omitted.

  As shown in FIG. 7 and the like, the front end portion of one top link 42 is rotatably connected to the upper connecting portion 16 of the work machine body 11, and the left and right lower connecting portions 17 of the work machine body 11 are The front ends of the lower arms 43 are connected to each other so as to be rotatable.

  As shown in FIG. 11 and the like, the rear end portion of the top link 42 of the work implement main body 11 is rotatably connected to the upper connection portion 44 of the additional earth work body 41, and the left and right lower arms of the work implement main body 11 are connected. Hook portions 43a formed at the rear end portion of 43 and having a concave shape upward are respectively connected to the lower connection portion 45 of the additional earth work body 41 so as to be rotatable. The height position of the rear end portion of the lower arm 43 can be adjusted by changing the insertion positions of the height adjusting pins 49 in a plurality of, for example, three holes 48 formed in the work machine body 11.

  Further, as shown in FIG. 7 and the like, a pressure reducing wheel 46 is detachably attached to the work machine body 11. The pressure reducing wheel 46 includes an arm portion 46a and a rotating portion 46b that is rotatably provided at the lower end portion of the arm portion 46a.

  Further, a third hole 50 is inserted in the rear side of the knife 25 of the earth work body 12 so that the first pin 31 is removably inserted when the additional earth work body 41 is attached to or detached from the work machine body 11. Is formed. And the 1st pin 31 is inserted in the 3rd hole 50, this 1st pin 31 and the pin contact part 22 contact each other, and the whole earth working body 12 is located on the ground surface G Thus, the additional soil work body 41 is attached to and detached from the work machine body 11 (see FIG. 10).

  On the other hand, as shown in FIG. 10 and the like, the additional earth work body 41 includes a main body 51 that is detachably attached to the work machine main body 11, a gauge ring 52 that is detachably attached to the main body 51, and a chain case portion 55 of the main body 51. Further, a tilling body 53 that is rotatably provided between the bracket portion (not shown) and performs the tilling work, and a leveling work that is provided at the rear end portion of the cover portion (not shown) of the main body 51 so as to be rotatable up and down. It has a body 54 and the like.

  Next, the case where the additional earth work body 41 is attached to the work machine body 11 will be described with reference to the drawings.

  First, the worker raises the work implement main body 11 by operating the work implement lifting / lowering support portion 3 of the tractor 2 from a single work state using only the earth work construct 12 shown in FIG. Is positioned on the ground surface G, and in this state, the second pin 32 is removed from the second hole 29 and the pin insertion hole 21 facing each other. FIG. 8 shows this state. In this state, the first pin 31 restricts the downward movement of the earth work body 12 with respect to the work machine main body 11, but the second pin 32 is removed, so that the earth work The body 12 can move up with respect to the work machine main body 11. When the entire earth work body 12 is located on the ground surface G, the earth work body 12 is supported by the first pin 31 and the second pin 32 is not loaded, so the second pin 32 is easily removed. It is possible.

  Next, as shown in FIG. 9, the operator lowers the work implement main body 11 by operating the work implement lifting support portion 3 of the tractor 2 while the second pin 32 is removed, so that the earth work body 12 is removed. After the chisel 26 at the lower end is brought into contact with the ground surface G, the earth work body 12 is moved up with respect to the work machine body 11 to a position where the first pin 31 can be inserted into the third hole 50, and then the first pin 31 Is replaced from the first hole 28 to the third hole 50, and the pressure reducing wheel 46 is removed from the work machine body 11.

  That is, when the work implement main body 11 is lowered by the work implement lifting support portion 3 of the tractor 2, the earth work body 12 is pushed against the ground surface G by contact with the ground surface G and is raised above the work implement main body 11. The five first hole portions 28 and the third hole portion 50 are positioned above the holding portion 18 of the work machine body 11. In this state, the operator removes the first pin 31 from the first hole 28 and inserts the removed first pin 31 into the third hole 50 this time.

  Next, the operator slightly raises the work implement body 11 by operating the work implement lifting support portion 3 of the tractor 2, whereby the first pin 31 inserted into the third hole 50 is a pin contact portion of the holding portion 18. The earth work body 12 is moved downward relative to the work machine main body 11 until it abuts against 22 and the first pin 31 is pushed up by the pin contact portion 22 by further raising the work machine main body 11 so that the entire earth work body 12 is It floats from the ground surface G and is positioned on the ground surface G, and the height adjusting pin 49 is removed from the hole 48.

  FIG. 10 shows this state, and when the tractor 2 travels back in this state, the work machine body 11 moves toward the additional soil work body 41 and the work machine body 11 and the additional soil work body 41 approach each other. Then, the additional earth work body 41 is attached to the work machine body 11. That is, the operator moves the work implement main body 11 closer to the additional earth work body 41 by the back travel of the tractor 2, and then connects the rear end portion of the top link 42 of the work equipment main body 11 to the upper connection of the additional earth work body 41. The hook portion 43a at the rear end of the left and right lower arms 43 of the work machine body 11 is connected to the lower connecting portion 45 of the additional earth work body 41.

  Next, as shown in FIG. 11, the operator slightly lowers the work implement body 11 by operating the work implement lifting support portion 3 of the tractor 2 to bring the chisel 26 at the lower end of the earth work body 12 to the ground surface G. The earth work body 12 is moved upward with respect to the work machine main body 11, and in this state, the first pin 31 is replaced with one first hole portion 28 selected from the third hole portion 50 and is used for height adjustment. The pin 49 is inserted into the selected one hole 48.

  Next, as shown in FIG. 12, the worker raises the work implement body 11 by operating the work implement lifting support portion 3 of the tractor 2, so that the first pin 31 is brought into contact with the pin contact portion 22 of the holding portion 18. The earth work body 12 is moved downward with respect to the work machine main body 11 until it abuts, and the first pin 31 is pushed up by the pin contact portion 22 by further raising the work machine main body 11 so that the entire earth work body 12 is grounded. The second pin 32 is inserted into the second hole 29 and the pin insertion hole 21 facing each other, and the gauge ring 52 is removed from the main body 51 after being floated from G and positioned on the ground surface G. That is, when the work implement main body 11 is raised by the work implement lifting support portion 3 of the tractor 2, the earth work body 12 is moved downward with respect to the work implement main body 11 and the first pin 31 inserted into the first hole portion 28. Comes into contact with the pin contact portion 22 of the holding portion 18 of the work machine body 11. When the first pin 31 and the pin contact portion 22 come into contact with each other, the second hole portion 29 and the pin insertion hole portion 21 corresponding to the working depth corresponding to the first hole portion 28 face each other. When the second pin 32 is inserted into the second hole 29 and the pin insertion hole 21 facing each other, the vertical movement of the earth work body 12 relative to the work machine body 11 is restricted by the second pin 32. The

  Then, as shown in FIG. 13, when the work implement body 11 is lowered by the work implement lifting support portion 3 of the tractor 2 and then the tractor 2 is moved forward, a soil crushing work is performed by the earth work body 12. Then, the tilling work is performed by the additional soil work body 41.

  When removing the additional soil work body 41 from the work machine body 11, the procedure for attaching the additional soil work body 41 to the work machine body 11 may be reversed. Further, in a single work state with only the earth work body 12, the work depth of the earth work body 12 can be changed by the same procedure as in the above-described one embodiment.

  And according to this agricultural working machine 1, not only the working depth of the earth working body 12 can be easily changed, but also the additional earth working body 41 can be easily attached to and detached from the working machine main body 11, and the burden on the operator is reduced. It can be further reduced and work efficiency is improved.

  In any of the above-described embodiments, the earth work body 12 may be one that crushes the soil in the field and lifts it upside down, a bullet dark hole drilling machine that forms a hole in the soil in the field, etc. The type of the additional soil work body 41 is also arbitrary.

  Moreover, the number of the 1st hole 28 and the 2nd hole 29 which the earth work body 12 has is not limited to five, Six or more may be sufficient.

It is a side view of the state set to one working depth of the agricultural working machine which concerns on one embodiment of this invention. It is explanatory drawing which shows the procedure at the time of changing the working depth of a farm working machine same as the above. FIG. 3 is an explanatory diagram following FIG. 2. It is explanatory drawing following FIG. It is explanatory drawing following FIG. It is a side view of the state set to the other working depth of the agricultural working machine same as the above. It is a side view of the state which works only with the earth work body of the agricultural working machine which concerns on other embodiment of this invention. It is explanatory drawing which shows the procedure at the time of attaching an additional earth work body to the working machine main body of a agricultural working machine same as the above. It is explanatory drawing following FIG. It is explanatory drawing following FIG. It is explanatory drawing following FIG. It is explanatory drawing following FIG. It is a side view of the state which works with the soil working body and additional soil working body of an agricultural working machine same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Agricultural work machine 2 Tractor which is a traveling vehicle 3 Working machine raising / lowering support part
11 Work implement body
12 Earthwork body
21 Pin insertion hole
22 Pin contact part
25 Knives
26 Chisel
28 1st hole
29 2nd hole
31 Pin 1
32 Pin 2
41 Additional soil work
50 3rd hole A One working depth B Other working depth G Ground surface

Claims (3)

A work implement main body having a pin abutting portion and a pin insertion hole portion and connected to the work implement lifting support portion of the traveling vehicle;
A plurality of first holes having different height positions and a plurality of second holes corresponding to the plurality of first holes are provided so as to be vertically movable with respect to the work implement body, at least a part of which is provided. A soil work body that performs soil work in a state of being inserted under the ground surface;
A first pin that is removably inserted into the first hole and regulates the downward movement of the earth work body relative to the work implement main body by contact with the pin contact portion;
A second pin that is removably inserted into the second hole portion and the pin insertion hole portion facing each other, and regulates the vertical movement of the earth work body relative to the work implement main body,
When the working depth of the earth working body is changed from one working depth to another working depth, the second holes corresponding to the one working depth facing each other and the second pins, Remove from the pin insertion hole,
After removing the second pin, the work implement main body is lowered by the operation of the work implement lifting and lowering support section so that the lower end portion of the earth work body is brought into contact with the ground surface, and the earth work body is attached to the work implement main body. The first pin is changed from the first hole corresponding to the one working depth to the first hole corresponding to the other working depth,
Next, the work implement main body is moved up by the operation of the work implement lifting support portion, and then the earth work body is moved down with respect to the work implement main body until the first pin comes into contact with the pin contact portion. The agricultural machine is characterized in that the second pin is inserted into the second hole and the pin insertion hole corresponding to the other working depth facing each other. It is detachably attached to the work machine body and has an additional earth work body that performs earth work behind the earth work body.
The earth work body has a third hole portion into which the first pin is removably inserted,
When the first pin is inserted into the third hole portion, the first pin and the pin contact portion are in contact with each other, and the entire earth work body is located on the ground surface, the additional soil work is performed. The agricultural work machine according to claim 1, wherein a body is attached to and detached from the work machine main body. The agricultural working machine according to claim 1 or 2, wherein the soil working body includes a vertically elongated knife and a chisel provided at a lower end portion of the knife.

Images