JP2019030268A - Agricultural machine - Google Patents

Abstract

To improve efficiency of maintenance work in an agricultural machine.SOLUTION: The agricultural machine mounted on a rear side of a traveling machine body, hauled by the traveling machine body, and tilling a field, includes: a first work rotor that, with traveling of the traveling machine body, rotates, with a first claw shaft used as a rotary shaft, the first claw shaft including a plurality of first tilling claws disposed thereon; a second work rotor that, with rotation of the first work rotor, rotates with a second claw shaft used as a rotary shaft, the second claw shaft including a plurality of second tilling claws disposed thereon; and a cover member disposed on the upper side of the second claw shaft so as to cover the second claw shaft, with it spaced from the second claw shaft and the second tilling claws, in a side view of the agricultural machine. In the side view of the agricultural machine, a forward end portion of the cover member is located between the first claw shaft and the second claw shaft.SELECTED DRAWING: Figure 4

Description

  The present invention relates to an agricultural machine. In particular, the present invention relates to a farm work machine including a work rotor for plowing a farm field.

  2. Description of the Related Art Conventionally, there is known an agricultural machine that is attached to a rear portion of a tractor via a hitch mechanism and obtains a driving force by being pulled by the tractor. For example, the agricultural working machine described in Patent Document 1 is attached to the rear portion of the tractor and pulled to rotate the front working rotor, and the power is transmitted to the rear working rotor through the chain mechanism. It has a structure. In the agricultural working machine having such a structure, as the tractor travels, the front working rotor and the rear working rotor rotate, so that the tilling claws provided on the respective working rotors plow the field.

  In the agricultural machine described in Patent Document 1, both the shaft of the front-side work rotor and the shaft of the rear-side work rotor are covered with one shield cover. The shield cover prevents the soil cultivated by the farm machine from scattering.

U.S. Pat. No. 4,492,273

  In the agricultural machine described in Patent Document 1, since the shield cover covers the shafts of both the front and rear working rotors, for example, the soil attached to the front working rotor is removed, or the front side In the maintenance work of the work rotor on one side, such as exchanging the tilling claws of the work rotor, the shield cover may interfere with the maintenance.

  An object of the present invention is to improve the efficiency of maintenance work in an agricultural machine.

  A farm work machine according to an embodiment of the present invention is a farm work machine that is attached to the rear portion of a traveling machine body and is pulled by the traveling machine body to cultivate a farm field. A first working rotor that rotates with the first claw shaft disposed as a rotation axis, and a second rotation that rotates with the second claw shaft disposed with the plurality of second tilling claws as the rotation axis in accordance with the rotation of the first work rotor. A two-work rotor, and a cover member that is spaced apart from the second claw shaft and the second tilling claw and is disposed above the second claw shaft so as to cover the second claw shaft in a side view of the agricultural machine. The front end portion of the cover member is located between the first claw shaft and the second claw shaft in a side view of the agricultural machine.

  The cover member is composed of a first cover member and a second cover member. In a side view of the agricultural machine, the front end portion of the second cover member protrudes more forward than the first cover member, and the second cover member The rear end portion of the first cover member may protrude rearward from the first cover member.

  The front end portion of the second cover member may be located between the first claw shaft and the second claw shaft.

  The rear end of the second cover member may be located between the second claw shaft and the cage roller.

  The material of the second cover member may be rubber.

  The front end portion of the second cover member may be positioned inside the rotation locus of the tip portion of the first tilling claw when the first work rotor rotates.

  According to the present invention, the efficiency of maintenance work can be improved in an agricultural machine.

It is the schematic which looked at the agricultural working machine in one Embodiment from the diagonally upper left of the back side. It is the schematic which looked at the agricultural machine in one Embodiment from the upper part. It is the schematic which looked at the agricultural working machine in one Embodiment from diagonally upward of the front side. It is a side view of the soil scattering prevention cover which the agricultural working machine in one embodiment has. It is a side view of another soil scattering prevention cover which the agricultural working machine in one Embodiment has.

<First Embodiment>
(Composition of farm equipment)
A configuration of the agricultural machine 100 according to the present embodiment will be described. In the present embodiment, an example of a farming machine 100 that is attached to the rear part of a traveling machine body such as a tractor and that is pulled by the traveling machine body to plow a farm field is illustrated.

  FIG. 1 is a schematic view of the agricultural working machine 100 according to the first embodiment as viewed from the upper left side on the rear side. FIG. 2 is a schematic view of the agricultural machine 100 according to the first embodiment as viewed from above. FIG. 3 is a schematic view of the agricultural working machine 100 according to the first embodiment as viewed from obliquely upward on the front side. 1 to 3 show a schematic configuration of the agricultural working machine 100 according to the present embodiment, and some components are not shown for convenience of explanation.

  The farm work machine 100 of this embodiment is roughly divided and includes a mounting part 10, a tilling work part 20, and a pressure reducing work part 30. Hereinafter, each part will be described in detail.

  The mounting portion 10 includes a top mast 11, a pair of lower links 12a and 12b, a pair of support members 13a and 13b, and a pair of first connecting members 14a and 14b.

  The support members 13 a and 13 b are fixed to the first support frame 21 and the second support frame 22 of the tillage working unit 20 and support the top mast 11. The lower links 12 a and 12 b are directly fixed to the first support frame 21. The first connecting members 14a and 14b connect the top mast 11 and the lower links 12a and 12b.

  The top mast 11 and the lower links 12a and 12b are connected to a three-point link mechanism (not shown) provided at the rear of the traveling machine body such as a tractor. Since the structure of the three-point link mechanism is well-known, description here is omitted. By connecting the mounting part 10 to the three-point link mechanism of the traveling machine body, the agricultural working machine 100 of this embodiment is mounted on the rear part of the traveling machine body.

  The tilling work unit 20 includes a first support frame 21, a second support frame 22, a pair of side plates 23a and 23b, a first cover member 24, a first work rotor 25, a second work rotor 26, a plurality of subsoilers 27, and a pair. The regulating members 29a and 29b, and a speed change mechanism 40 described later are included. In FIG. 1, the speed change mechanism 40 is indicated by a dotted line and is covered with a speed change mechanism cover member 41.

  The first support frame 21 and the second support frame 22 are connected to the side plates 23a and 23b and support the side plates 23a and 23b. Further, as described above, the first support frame 21 and the second support frame 22 support the top mast 11 via the support members 13a and 13b. The first support frame 21 further supports the lower links 12a and 12b.

  Further, the first support frame 21 supports a plurality of subsoilers 27. The plurality of subsoilers 27 are detachably fixed to the first support frame 21 via fixing members 28, respectively. The subsoiler 27 is a component that crushes and softens the subsoil (also referred to as lower layer soil) as the traveling machine body travels, and is disposed at a predetermined interval with respect to the first support frame 21. The fixing member 28 can be attached to an arbitrary position of the first support frame 21.

  A first work rotor 25 and a second work rotor 26 are installed between the side plates 23a and 23b. The first cover member 24 is installed between the side plates 23 a and 23 b and covers the upper portion of the second work rotor 26. The first cover member 24 plays a role of preventing the clumps from scattering upward during the tilling work of the first work rotor 25 and the second work rotor 26.

  Further, regulating members 29a and 29b are attached to the side plates 23a and 23b, respectively. These regulating members 29a and 29b function as means for regulating the vertical movement of a pair of first support arms 33a and 33b that support a first basket roller 31 described later.

  The first working rotor 25 includes a first claw shaft 25a and a plurality of first tilling claws 25b. A plurality of the first tilling claws 25b are arranged around the axis at a predetermined mounting position of the first claw shaft 25a (for example, the first claw flange 25g). In the present embodiment, for example, six first tilling claws 25b are arranged for one first claw flange 25g. A plurality of first claw flanges 25g are provided at a predetermined interval in the longitudinal direction of the first claw shaft 25a.

  The second working rotor 26 includes a second claw shaft 26a and a plurality of second tilling claws 26b. Similar to the first work rotor 25, a plurality of second tilling claws 26b are also arranged around the axis at a predetermined mounting position (for example, the second claw flange 26g) of the second claw shaft 26a. In the present embodiment, for example, six second tilling claws 26b are arranged for one second claw flange 26g. A plurality of second claw flanges 26g are provided at a predetermined interval in the longitudinal direction of the second claw shaft 26a.

  In the present embodiment, the first tilling claw 25b is attached to the first claw shaft 25a while shifting the phase between the adjacent first claw flanges 25g. That is, when the first work rotor 25 is viewed from the direction (left-right direction) along the first claw shaft 25a, the plurality of first tilling claws 25b adjacent to each first claw flange 25g are connected to the first claw shaft 25a. They are arranged in a spiral from one side to the other side. The second tillage claw 26b is also mounted on the second claw shaft 26a with the same configuration. Thereby, while the resistance at the time of tilling of the 1st working rotor 25 and the 2nd working rotor 26 can be made small, the uniform agricultural field surface with few unevenness | corrugations can be obtained.

  Moreover, the 1st nail | claw axis | shaft 25a and the 2nd nail | claw axis | shaft 26a are rotatably attached via the bearing etc. with respect to the side plates 23a and 23b, respectively. Further, the first claw shaft 25 a and the second claw shaft 26 a can be interlocked with each other via the speed change mechanism 40. In the present embodiment, the speed change mechanism 40 is provided on the side plate 23 a and the periphery thereof is protected by a speed change mechanism cover member 41.

  In the present embodiment, the speed change mechanism 40 has a function of increasing the rotation speed of the second work rotor 26 more than the rotation speed of the first work rotor 25 (in that sense, it may be referred to as a “speed increase mechanism”). ). For example, in the present embodiment, the speed change mechanism 40 causes the second working rotor 26 to rotate at a speed that is two to four times that of the first working rotor 25 (specifically, about three times).

  In the present embodiment, the speed change mechanism 40 is configured by combining a plurality of sprockets having different sizes and a roller chain installed on the plurality of sprockets. However, the present invention is not limited to this, and the speed change mechanism 40 may be configured by combining a plurality of spur gears having different numbers of teeth.

  The pressure reducing operation unit 30 includes a first basket roller 31, a second basket roller 32, a pair of first support arms 33a and 33b, and a pair of second support arms 34a and 34b.

  The first basket roller 31 has a structure in which a plurality of flat bars 31b are installed on a plurality of ring-shaped support members 31a. Similarly, the second basket roller 32 has a structure in which a plurality of flat bars 32b are installed on a plurality of ring-shaped support members 32a. Although not shown in the present embodiment, both the support member 31a and the support member 32a have a rotation shaft inside an opening provided near the center. That is, the first basket roller 31 and the second basket roller 32 rotate around a rotation shaft (not shown).

  In the agricultural working machine 100 according to the present embodiment, when the traveling machine body travels forward as it travels, the first basket roller 31 and the second basket roller 32 travel while rotating after the plowing work unit 20 has passed. At that time, the plurality of flat bars 31b and 32b are configured to crush and crush the soil blocks in the field cultivated by the tilling work unit 20.

  The first basket roller 31 is rotatably supported by the first support arms 33a and 33b. One end of the first support arms 33a and 33b is rotatably connected to the side plates 23a and 23b, and the other end is connected to a rotating shaft (not shown) of the first basket roller 31. As described above, the vertical movement of the first support arms 33 a and 33 b can be restricted by the restriction members 29 a and 29 b provided in the tilling work unit 20.

  The second basket roller 32 is rotatably supported by a pair of second support arms 34a and 34b. One ends of the second support arms 34a and 34b are rotatably connected to the first support arms 33a and 33b, and the other ends are connected to a rotation shaft (not shown) of the second basket roller 32. In the present embodiment, since one end of the second support arms 34a and 34b is rotatably connected to the first support arms 33a and 33b, the first basket roller 31 and the second basket roller 32 can move in the vertical direction. There is freedom.

  Further, for example, an electric cylinder or the like is installed between the second support frame 22 (or the first support frame 21) and the second support arms 34a and 34b, and the second basket roller 32 can be lifted to an arbitrary position. It is good also as a structure. In this case, it is possible to perform soil crushing and crushing in the field with only the first basket roller 31. Further, in the case of such a structure, since the load of the second basket roller 32 is applied to the first basket roller 31, it is possible to improve the pressure suppressing performance of the first basket roller 31.

  As described above, the agricultural working machine 100 of the present embodiment is pulled as the traveling machine body travels, and cultivates the field surface by the action of the first work rotor 25 and the second work rotor 26. The soil blocks in the field cultivated by the first work rotor 25 and the second work rotor 26 are crushed and crushed by the action of the first basket roller 31 and the second basket roller 32.

  At this time, the rotation speed of the second work rotor 26 is increased by the speed change mechanism 40 more than the rotation speed of the first work rotor 25. For example, in the agricultural working machine 100 of the present embodiment, the second work rotor 26 rotates at a speed approximately three times that of the first work rotor 25. Therefore, it is possible to rapidly cultivate the farm field by moving a traveling machine body such as a tractor at a high speed.

(Structure of soil scattering prevention cover)
Next, a specific configuration of the soil scattering prevention cover 43 in the agricultural machine 100 according to the present embodiment will be described with reference to FIG. In the description of FIG. 4, the description of the contents described in FIGS. 1 to 3 is omitted. Moreover, in FIG. 4, F and its arrow represent front and front in a side view. B and its arrow represent rear and rear in a side view. U and its arrow represent up and up in a side view. D and its arrow represent lower and lower in a side view.

  FIG. 4 is a side view showing configurations of the soil scattering prevention cover 43, the first work rotor 25, and the second work rotor 26 in the agricultural working machine 100 of the present embodiment.

  The front end of the soil scattering prevention cover 43 is located between the first claw shaft 25a and the second claw shaft 26a. Further, the rear end of the soil scattering prevention cover 43 is located between the second claw shaft 26 a and the first basket roller 31.

  The soil scattering prevention cover 43 includes a first cover member 24 and a second cover member 42.

  The first cover member 24 is disposed above the second claw shaft 26 a in the side view of the agricultural machine 100. In addition, the first claw shaft 25 a is not disposed below the first cover member 24 in the side view of the agricultural working machine 100. Further, the first cover member 24 overlaps the second cover member 42. The first cover member 24 may also be referred to as a shield cover.

  The second cover member 42 is disposed above the second claw shaft 26 a in the side view of the agricultural machine 100. In addition, the first claw shaft 25 a is not disposed below the second cover member 42 in the side view of the agricultural working machine 100. Further, the second cover member 42 and a rotation locus 260 described later are separated from each other. That is, the second cover member 42 is separated from the second claw shaft 26a and the second tilling claw 26b.

  Further, in the side view of the agricultural machine 100, the front end portion of the second cover member 42 projects forward from the first cover member 24. Similarly, the rear end portion of the second cover member 42 projects rearward from the first cover member 24. Here, the end of the second cover member 42 with respect to the end of the first cover member 24 protrudes longer in the rear than in the front. Further, the length of the front end of the second cover member 42 protruding forward from the first cover member 24 is a length that does not reach a rotation locus 250 described later. That is, the front end portion of the second cover member 42 does not contact the tip portion of the first tilling claw 25b. Further, the front end portion of the second cover member 42 does not contact the tip end portion of the second tilling claw 26b. The front end of the second cover member 42 does not come into contact with the tip of the first tillage claw 25b and the tip of the second tillage claw 26b, so that the second cover member 42 becomes the first tillage claw 25b, And it is possible to prevent the second cover member 42, the first tilling claw 25b, and the second tilling claw 26b from being worn by contacting with the second tilling claw 26b.

  Furthermore, in the side view of the agricultural machine 100, the front end portion of the second cover member 42 is located behind the tip portion of the second tilling claw 26b located in front of the second claw shaft 26a. Further, the rear end portion of the second cover member 42 is located behind the tip portion of the second tilling claw 26b located behind the second claw shaft 26a. That is, in the agricultural machine 100, the second cover member 42 is arranged so as to cover the rear of the second work rotor 26 rather than the front. The second cover member 42 covers the rear side rather than the front side of the second work rotor 26, thereby preventing the scattering of soil that the second work rotor 26 rolls up rearward.

  The front end portion of the second cover member 42 is located between the first claw shaft 25a and the second claw shaft 26a. Further, the rear end portion of the second cover member 42 is located between the second claw shaft 26 a and the first basket roller 31.

  As the material of the second cover member 42, for example, iron, stainless steel, ceramics, resin, wood, rubber, or the like can be applied. In this specification, an example in which the material of the second cover member 42 is rubber is shown. Since the material of the second cover member 42 is rubber, it is difficult for soil to adhere to the soil scattering prevention cover 43, and even if soil has adhered to the second cover member 42, it is wound up by the second work rotor 26. When the soil collides with the second cover member 42, the second cover member 42 vibrates because the second cover member 42 is elastic rubber. As the second cover member 42 itself vibrates, the soil attached to the second cover member 42 can be efficiently dropped. Furthermore, since the material of the second cover member 42 is rubber, the weight of the entire soil scattering prevention cover 43 can be further reduced. Reducing the weight of each component constituting the farm work machine 100 is advantageous for improving the work efficiency of the farm work machine 100. The second cover member 42 may be called a rubber cover.

  In this embodiment, the 1st cover member 24 and the 2nd cover member 42 show the example fixed with the volt | bolt and the nut. The fixing of the first cover member 24 and the second cover member 42 is not limited to this configuration. For example, the first cover member 24 and the second cover member 42 may be bonded with an adhesive material such as an adhesive, or may be fixed with a member such as a rivet. What is necessary is just to select suitably in the range which does not deviate from the meaning of this invention.

  The soil scattering prevention cover 43 does not necessarily have the second cover member 42. By not having the second cover member 42, the weight of the entire soil scattering prevention cover 43 can be further reduced.

  Here, an example is shown in which the second cover member 42 is composed of a single member, but the present invention is not limited to this example. For example, the second cover member 42 may be composed of two or more members. When the second cover member 42 has two or more members, in the side view of the agricultural machine 100, two or more of the members constituting the second cover member 42 have a free end at the front end. Also good. When two or more front ends of the members constituting the second cover member 42 are free ends, the scattered soil becomes a member constituting the second cover member 42 during the operation of the agricultural working machine 100. Two or more of the members constituting the second cover member 42 vibrate when the second tilling claw 26b that contacts or rotates contacts the member constituting the second cover member 42, and the second cover The soil adhering to the member 42 can be dropped.

  Furthermore, here, in the side view of the agricultural machine 100, the front end portion of the soil scattering prevention cover 43 is located between the first claw shaft 25a and the second claw shaft 26a, and is behind the soil scattering prevention cover 43. Although the example which is located between the 2nd nail | claw axis | shaft 26a and the 1st basket roller 31 is shown, this edge part is not limited to this example. The front end of the second cover member 42 is located between the first claw shaft 25a and the second claw shaft 26a, and the rear end of the second cover member 42 is connected to the second claw shaft 26a. Although the example located between the 1st basket rollers 31 is shown, it is not limited to this example. The soil scattering prevention cover 43 is disposed above the second claw shaft 26 a and the first basket roller 31, and the rear end portion of the soil scattering prevention cover 43 is located between the first basket roller 31 and the second basket roller 32. May be. In this case, scattering of the soil wound up by the first basket roller 31 can be prevented. Furthermore, the soil scattering prevention cover 43 may be disposed above the first basket roller 31 and the second basket roller 32, and the rear end of the soil scattering prevention cover 43 may be located behind the second basket roller 32. In this case, scattering of the soil wound up by the second basket roller 32 can be prevented. Similarly, the second cover member 42 is disposed above the second claw shaft 26 a and the first basket roller 31, and the rear end portion of the second cover member 42 is between the first basket roller 31 and the second basket roller 32. It may be located between. Also in this case, scattering of the soil wound up by the first basket roller 31 can be prevented. Further, the second cover member 42 may be disposed above the first basket roller 31 and the second basket roller 32, and the rear end portion of the second cover member 42 may be located behind the second basket roller 32. Also in this case, scattering of the soil wound up by the second basket roller 32 can be prevented.

  The first work rotor 25 has a first claw shaft 25a and a first tilling claw 25b. Here, the first work rotor 25 is a work rotor on the front side of the agricultural work machine 100, and the first claw shaft 25a is also called a front shaft. The rotation locus 250 shown in FIG. 4 is the locus of the tip of the first tillage claw 25b when the first work rotor 25 rotates, that is, the locus farthest from the first claw shaft 25a of the first tillage claw 25b. The rotation locus 250 may be referred to as the rotation locus of the tip portion of the first tilling claw 25b when the first work rotor 25 rotates.

  The first work rotor 25 rotates at a slower speed than the second work rotor 26, and soil does not scatter over the first work rotor 25. Therefore, a soil scatter prevention cover 43 is provided over the first work rotor 25. Not placed. That is, the soil scattering prevention cover 43 is not disposed above the first claw shaft 25a.

  The second working rotor 26 has a second claw shaft 26a and a second tilling claw 26b. Here, the second work rotor 26 is a work rotor on the rear side of the agricultural work machine 100, and the second claw shaft 26a is also called a rear shaft. The rotation locus 260 shown in FIG. 4 is the same as the rotation locus 250 in the first work rotor 25, and the tip of the second tillage claw 26b when the second work rotor 26 rotates, that is, the second tillage claw 26b. This is the locus of the place farthest from the two claw shaft 26a. The rotation locus 260 may be referred to as the rotation locus of the tip of the second tillage claw 26b when the second work rotor 26 rotates.

  As described above, in the side view of the agricultural working machine 100 according to the present embodiment, the soil scattering prevention cover 43 is not disposed above the first work rotor 25, that is, above the first claw shaft 25a. It is arranged above the rotor 26, that is, above the second claw shaft 26a. Therefore, the agricultural machine 100 according to the present embodiment can widen the space above the first claw shaft 25a. In addition, since the soil scattering prevention cover 43 is disposed only above the second claw shaft 26a where the soil is likely to be scattered by high speed rotation, the soil scattering prevention cover 43 is maintained more effectively than the conventional one while maintaining the soil scattering prevention effect. The size can be reduced. Therefore, according to the present invention, the operator can secure a wide space above the first work rotor 25 and removes the soil adhering to the first work rotor 25. It is possible to improve the efficiency of maintenance work such as replacing 25b. Further, conventionally, since the shield cover has covered the upper portion of the first claw shaft 25a, it is necessary to perform soil removal work between the first claw shaft 25a and the shield cover. Since there is no member covering the upper part of the first claw shaft 25a, there is no risk of soil clogging during the tilling work of the farm work machine 100, and there is no need to perform soil removing work that interrupts the tilling work. The working efficiency of the machine 100 can be improved. Furthermore, according to the present invention, the agricultural machine 100 can be reduced in weight, and the working efficiency of the agricultural machine 100 can be further improved.

  In addition, the soil scattering prevention cover 43 of the agricultural machine 100 according to the present embodiment is such that the end of the second cover member 42 with respect to the end of the first cover member 24 is rearward compared to the front in the side view of the agricultural machine 100. Protrusively longer. Therefore, the soil scattering prevention cover 43 included in the agricultural machine 100 according to the present embodiment can cover the rear of the second claw shaft 26a. Therefore, the scattering of the soil wound up backward by the second work rotor 26 of the agricultural working machine 100 can be prevented.

Second Embodiment
Another structure of the soil scattering prevention cover 43 in the agricultural machine 100 according to the present embodiment will be described with reference to FIG. In addition, the description similar to 1st Embodiment is abbreviate | omitted.

  5, the front end portion of the second cover member 42 constituting the soil scattering prevention cover 43 projects forward from the first cover member 24 in a side view of the agricultural work machine 100 with respect to the configuration shown in FIG. 4. And the point which is in the rotation locus | trajectory 250 of the 1st working rotor 25 differs. In other words, the first tillage claw 25 b comes into contact with the front end portion of the second cover member 42 during the tilling work of the agricultural work machine 100.

  Although not shown, like the first embodiment, the second cover member 42 is preferably composed of two or more members. In addition, it is preferable that the second cover member 42 is composed of two or more members, and two or more front ends of the members constituting the second cover member 42 are free ends.

  As described above, in the agricultural machine 100 according to the present embodiment, during the cultivation work of the agricultural machine 100, the scattered soil contacts the second cover member 42, or the first tillage claw 25 b and the second cultivation claw 26 b are the first. The second cover member 42 can be vibrated by contacting the two cover members 42. As the second cover member 42 vibrates, the soil adhered to the second cover member 42 can be dropped. According to the present invention, the work of removing soil can be omitted, so that the work efficiency of the agricultural machine 100 can be improved.

  Each embodiment described above as an embodiment of the present invention may be implemented in appropriate combination as long as it does not contradict each other.

  The present invention has been described above with reference to the drawings. However, the present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 10 ... Mounting part, 11 ... Top mast, 12a, 12b ... Lower link, 13a, 13b ... Support member, 14a, 14b ... 1st connection member, 20 ... Tillage working part, 21 ... 1st support frame, 22 ... 2nd Support frame, 23a, 23b ... side plate, 24 ... first cover member, 25 ... first work rotor, 25a ... first claw shaft, 25b ... first tillage claw, 25g ... first claw flange, 26 ... second work Rotor, 26a ... second claw shaft, 26b ... second tillage claw, 26g ... second claw flange, 27 ... subsoiler, 28 ... fixing member, 29a, 29b ... regulating member, 30 ... crushing working part, 31 ... first cage roller , 31a ... support member, 31b ... flat bar, 32 ... second cage roller, 32a ... support member, 32b ... flat bar, 33a, 33b ... first support arm, 34a, 34b ... second support Over arm, 40 ... gear mechanism, 41 ... speed change mechanism cover member, 42 ... second cover member, 43 ... Saturday scattering prevention cover 100 ... agricultural machines, 250, 260 ... rotation locus

Claims (6)

A farm working machine that is attached to the rear part of a traveling machine body and that is pulled by the traveling machine body to plow a farm field,
Along with the traveling of the traveling machine body, a first working rotor that rotates with a first claw shaft on which a plurality of first tilling claws are arranged as a rotation axis;
A second working rotor that rotates around the second claw shaft on which a plurality of second tilling claws are arranged in accordance with the rotation of the first working rotor;
In the side view of the agricultural machine, a cover member that is spaced apart from the second claw shaft and the second tilling claw and is disposed to cover the second claw shaft above the second claw shaft;
With
A front end portion of the cover member is located between the first claw shaft and the second claw shaft in a side view of the agricultural machine. The cover member includes a first cover member and a second cover member,
In a side view of the agricultural machine, a front end portion of the second cover member protrudes forward of the first cover member, and a rear end portion of the second cover member is more than the first cover member. The farm work machine according to claim 1 which protrudes back. The agricultural working machine according to claim 2, wherein a front end portion of the second cover member is located between the first claw shaft and the second claw shaft. The agricultural working machine according to claim 2 or 3, wherein a rear end portion of the second cover member is located between the second claw shaft and a cage roller. The agricultural machine according to any one of claims 2 to 4, wherein the material of the second cover member is rubber. The front end portion of the second cover member is located inside a rotation locus of a tip portion of the first tillage claw when the first work rotor rotates. Agricultural machine according to item.

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