JP2015165787A - Two-axle rotary tiller apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a two-axle rotary tiller apparatus that can adjust the soil-crushing area.SOLUTION: The two-axle rotary tiller apparatus 30 comprises a first tiller (main tiller 50), a second tiller ( tiller for fine earth 70) disposed behind the first tiller in a detachable manner, and a ridge forming device 90. The second tiller comprises a driving source (motor 71), and is disposed in a controllable manner in an up and down direction and in a back and forth direction with respect to the first tiller. Furthermore, the second tiller comprises a driving source and is disposed to have a controllable rotation number of the second tiller.

Description

  The present invention relates to a rotary tiller, and more particularly, to a biaxial rotary tiller having a first tiller and a second tiller.

  In order to cultivate a field, a rotary tiller that is towed by a vehicle such as a tractor is used. The rotary tiller has a rotary tiller where a plurality of claws rotate at high speed. The topsoil in the field is cultivated by crushing the soil with a plurality of claws of the rotary tillage section.

  Among the rotary tillers, there is a biaxial rotary tiller having a first tiller provided along the width direction of the vehicle and a second tiller provided behind the first tiller. In the biaxial rotary tiller, the soil roughened by the first tiller is further crushed by the second tiller, and the place where planting is applied to the top of the cultivated soil is made fine. be able to.

  In Patent Document 1, the first tillage unit is driven by power from a PTO (Power Take-Off) shaft, and the detachable second tillage unit is separately driven independently by a drive system using an electric motor. A biaxial rotary tiller configured as described above is disclosed.

JP 2001-078502 A

  According to the biaxial rotary tiller of Patent Document 1, the drive system that rotationally drives the rotary claw shaft of the second tillage part is simplified, and the second tillage part can be easily attached to and detached from the first tillage part. It is supposed to be possible. Furthermore, Patent Document 1 describes that it is preferable to configure the second tillage part so that the vertical relative position with respect to the first tillage part can be arbitrarily adjusted.

  Some biaxial rotary tillers, as described in Patent Document 1, allow the second tiller to be adjusted in the vertical direction with respect to the first tiller. However, they are used after being fixed after the vertical relative position of the second tillage device is adjusted. On the other hand, among the two-shaft rotary tillers, there is one that allows the second tiller to swing up and down with respect to the first tiller. However, they are crushed by following the unevenness of the ground such that the second tillage device moves up and down integrally with the leveling plate. Therefore, in these biaxial rotary tillers, the vertical relative position of the second tiller with respect to the first tiller is not freely changed during soil tillage.

  Thus, in the biaxial rotary tiller, sufficient consideration is not given to the crushed soil area during tillage.

  Accordingly, an object of the present invention is to provide a two-shaft rotary tiller in which the crushed area is adjustable.

  For this reason, the biaxial rotary tiller according to the present invention includes a first tiller, a second tiller provided detachably behind the first tiller, and a tiller 2 In the shaft-type rotary tiller, the second tiller includes a drive source and is provided to be controllable in the vertical and forward / backward directions with respect to the first tiller.

  Furthermore, the biaxial rotary tiller according to the present invention is characterized in that the second tiller is periodically controlled in the vertical direction.

  Furthermore, the biaxial rotary tiller according to the present invention is characterized in that the rotation speed of the second tillage device is larger than the rotation speed of the first tillage device.

  Furthermore, the biaxial rotary tiller according to the present invention includes a first tiller, a second tiller provided detachably on the rear side of the first tiller, and a biaxial having a tiller. In the rotary rotary tiller, the second tiller includes a drive source, and the number of rotations of the second tiller is provided to be controllable.

  Furthermore, the biaxial rotary tiller according to the present invention is characterized in that the rotational speed of the second tiller is controlled so as to periodically change.

  Furthermore, the biaxial rotary tiller according to the present invention is characterized in that the maximum value of the rotation speed of the second tillage device is larger than the rotation speed of the first tillage device.

  Furthermore, the biaxial rotary tiller according to the present invention is characterized in that the rotation speed of the first tiller is not less than 100 rpm (Revolutions Per Minute) and not more than 200 rpm.

  Furthermore, the biaxial rotary tiller according to the present invention is characterized in that the first tiller and the second tiller can rotate forward and backward, respectively.

  Furthermore, in the biaxial rotary tiller according to the present invention, the drive source is an electric motor.

  Furthermore, in the biaxial rotary tiller according to the present invention, the drive source is a hydraulic motor.

  Furthermore, in the biaxial rotary tiller according to the present invention, the second tiller is a center drive type attached to an upper arm extending rearward from a center case to which the first tiller is attached. And

  Furthermore, the biaxial rotary tiller according to the present invention is characterized in that the crushed claws of the second tiller are arranged corresponding to the top and center of the ridge formed by the ridger. To do.

  Furthermore, the biaxial rotary tiller according to the present invention is further provided with a hopper that accommodates the marker, and the marker is sprayed on places where the second tiller has crushed.

  According to the present invention, in a biaxial rotary tiller having a first tillage device, a second tiller provided detachably behind the first tillage device, and a tiller, The tillage device includes a drive source and is provided so as to be controllable in the vertical and longitudinal directions with respect to the first tillage device. Therefore, a place where planting is performed, that is, fine soil is required in the upper portion of the formed straw. Crushing can be performed only at the locations where the work is performed, and the work efficiency can be improved. Furthermore, it is possible to prevent tangling of unnecessary materials such as grass and soil clogging, and to maintain the performance of the crushed soil well.

  Furthermore, according to the present invention, since the second tillage device is periodically controlled in the vertical direction, the soil can be crushed at a predetermined interval, and the work efficiency can be further improved.

  Furthermore, according to this invention, since the rotation speed of the 2nd tillage apparatus is larger than the rotation speed of the 1st tillage apparatus, it can pulverize efficiently and can improve work efficiency more. Can do. And crushed soil can be performed reliably and the performance of crushed soil can be improved more.

  Furthermore, according to the present invention, in a biaxial rotary tiller having a first tiller, a second tiller that is detachably provided behind the first tiller, and a vertical stand, The No. 2 tillage device includes a drive source, and the number of rotations of the second tillage device is provided to be controllable. Therefore, a place where planting is performed, that is, fine soil is required in the upper portion of the formed tillage. Crushing can be performed only at the location, and the efficiency of the work can be improved. Furthermore, it can be crushed to a desired particle size, and the performance of the crushed soil can be maintained well.

  Furthermore, according to the present invention, the rotation speed of the second tillage device is controlled so as to fluctuate periodically, so that the soil can be crushed at a predetermined interval, and the work efficiency is further improved. be able to.

  Furthermore, according to the present invention, since the maximum value of the rotation speed of the second tillage device is larger than the rotation speed of the first tillage device, the ground can be efficiently crushed and the work efficiency can be further improved. Can be improved. And crushed soil can be performed reliably and the performance of crushed soil can be improved more.

  Furthermore, according to this invention, since the rotation speed of the 1st tillage apparatus is 100 rpm or more and 200 rpm or less, it can crush efficiently and can form a hail and can improve work efficiency more. it can. And the formation of a heel can be performed reliably and the performance of work can be improved more.

  Furthermore, according to the present invention, since the rotation of the first tillage device and the second tillage device can be rotated forward and backward, respectively, it is possible to further prevent tangling of unnecessary objects such as grass and soil clogging. And the performance of the crushed soil can be maintained better.

  Furthermore, according to the present invention, since the drive source is an electric motor, the drive source provided in the second tillage device has a simple configuration and can easily output a high-speed rotation, thereby improving the work efficiency. Can be improved.

  Furthermore, according to the present invention, since the drive source is a hydraulic motor, the drive source included in the second tillage device can be simply configured, and a high output can be easily obtained, thereby improving work efficiency. Can be made.

  Furthermore, according to the present invention, the second tillage device is of a center drive type attached to the upper arm extending rearward from the center case to which the first tillage device is attached. Can be made simple, can be easily attached and detached, and work efficiency can be further improved.

  Furthermore, according to the present invention, the crushing claw of the second tillage device is disposed corresponding to the top and center of the ridge formed by the ridger, so that the 2 tillage devices can be crushed and work efficiency can be further improved.

  Furthermore, according to the present invention, the hopper for accommodating the marker is further provided, and the marker is sprayed on the place where the second tilling device has crushed, so that the place where the fine soil is formed by the second tilling device is clearly indicated. It is possible to improve the work efficiency.

It is a side view which shows the form with which the biaxial rotary tiller as an example of this embodiment was mounted | worn with the tractor. It is a principal part enlarged side view of FIG. It is the rear view which abbreviate | omitted some biaxial rotary tillers. It is the schematic sectional view which looked at the ridge formed after the operation | work by a biaxial rotary tiller from the advancing direction side. FIG. 5 is a schematic cross-sectional view taken along line VV in FIG. 4. An example of the nail | claw attached to a biaxial rotary tiller is shown, FIG. 6A is the front view, FIG. 6B is the side view, and FIG. 6C is the top view. It is a principal part enlarged side view of a modification.

  Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings. FIG. 1 is a side view showing a form in which a biaxial rotary tiller 30 as an example of this embodiment is mounted on a tractor 10. In the following, for convenience of explanation, the left side in FIG. 1 which is the traveling direction of the tractor 10 is defined as the front direction, and is orthogonal to the traveling direction and extends to the near side and the far side in FIG. The direction is the width direction.

  A tractor 10 illustrated in FIG. 1 includes an engine E, a battery BT, a generator (not shown), a radiator, a cooling fan, an air cleaner, and the like in a bonnet 11. The engine E, the battery BT, the generator, and the radiator are placed on the chassis 12. The generator operates in conjunction with the output part of the engine E. The battery BT is connected to the generator. Electricity generated by the generator is stored in the battery BT.

  The tractor 10 includes front wheels 13 and 13 on the left and right sides of the front part corresponding to the traveling direction of the aircraft, and includes rear wheels 14 and 14 on the left and right sides of the rear part. Fenders 15 and 15 are provided so as to cover the left and right rear wheels 14 and 14 from above and from the inside of the tractor 10, respectively. The tractor 10 may have a configuration in which a crawler is used for the traveling device.

  A dashboard 16 is provided behind the bonnet 11 via an air cut plate (not shown). The dashboard 16 is provided with a panel (not shown) that displays the speed, the remaining amount of fuel, and the like. A steering column cover 17 is provided adjacent to the rear of the dashboard 16. A steering wheel 18 projects from the upper end of the steering column cover 17. An accelerator lever (not shown) is provided on the right side of the steering 18. A clutch pedal 19 and left and right brake pedals (not shown) are provided below the steering column cover 17.

  A driver's seat 20 is provided behind the steering column cover 17 at a predetermined distance. The driver's seat 20 is disposed between the left and right fenders 15 and 15.

  Below the driver seat 20, a transmission case TM containing a transmission (not shown) is disposed. The transmission case TM is fixed to the rear part of the chassis 12. The transmission transmits the power of the engine E to the rear wheels 14 and 14.

  A fuel tank (not shown) is arranged adjacent to the rear of the driver seat 20. The fuel tank is disposed between the left and right fenders 15 and 15. ROPS (Roll-Over Protective Structures) 21 protrudes upward from the rear ends of the left and right fenders 15, 15. Note that the tractor 10 may have a cabin.

  On the rear upper surface of the transmission case TM, for example, a hydraulic working machine lifting mechanism 22 for lifting and lowering the biaxial rotary tiller 30 mounted as a working machine is attached. Note that the working machine lifting mechanism 22 is not limited to a hydraulic type, and may be a mechanical type using a gear, for example, as long as the working machine can be raised and lowered.

  The biaxial rotary tiller 30 according to this embodiment is coupled to the rear of the transmission case TM of the tractor 10 via a three-point link mechanism including a pair of left and right lower links 23 and 23 and a top link 24. The front end sides of the left and right lower links 23 are connected to the left and right side surfaces of the rear portion of the transmission case TM so as to be rotatable. A front end side of the top link 24 is rotatably connected to a rear portion of the work machine lifting mechanism 22. The PTO shaft 25 for transmitting the driving force of the engine E is linked to the engine E and protrudes rearward on the rear surface of the transmission case TM.

  The work machine elevating mechanism 22 is provided with a pair of left and right lift arms 26 and 26 that are rotated by an elevating hydraulic cylinder (not shown). The left and right lift arms 26 and 26 are connected to the left and right lower links 23 and 23 via left and right lift rods 27 and 27, respectively. Each of the left and right lift arms 26, 26 is configured such that the biaxial rotary tiller 30 moves up and down by rotating.

  The biaxial rotary tiller 30 according to the present embodiment includes a main tiller 50 as a first tiller for roughing, and a second tiller provided detachably behind the main tiller 50. It has a fine soil tillage device 70 and a tiller 90 also called a cultivator.

  In addition, at the front portion of the main tilling device 50, a lower connecting portion 31 that is detachably connected to each of the left and right lower links 23 and 23 in the three-point link mechanism of the tractor 10, and a top link 24 that is detachably connected. The upper connecting part 32 is provided. On the other hand, a rear portion of the main tillage device 50 is provided with an unillustrated tillage depth adjusting bar extending rearward. A plowing depth adjusting frame (not shown) extends in the width direction and is connected to the rear end of the plowing depth adjusting bar.

  Furthermore, between the upper connection part 32 and the tilling depth adjusting bar, a tilling depth adjusting mechanism 33 that can freely adjust expansion and contraction is provided. The vertical position of the tilling depth adjusting bar and the tilling depth adjusting frame is changed by the rotation of the tilling depth adjusting handle 34 provided in the tilling depth adjusting mechanism 33.

  The plowing depth adjustment frame supports the upper end of a gauge ring arm (not shown) extending in the vertical direction, and a disk-like gauge ring (not shown) is provided at the lower end of the gauge ring arm so as to be rotatable about the width direction. It may be done. According to such a configuration, the biaxial rotary tiller 30 moves up and down as the gauge wheel moves up and down due to the rotation of the tilling handle 34, and the tilling depth becomes adjustable.

  An upper arm 35 extending rearward is further provided at the rear of the main tilling device 50. An upper frame 36 extending in the width direction is attached to a rear portion of the upper arm 35 extending rearward so that a front-rear position on the upper arm 35 can be adjusted. A support arm 37 extending further to the rear of the upper frame 36 is further provided at the rear of the main tilling device 50. A support frame 38 extending in the width direction is attached to the rear portion of the support arm 37 extending rearward so that the front-rear position on the support arm 37 can be adjusted. A fine soil tillage device 70 is attached to the upper frame 36, and a ridger 90 is attached to the support frame 38. Therefore, each of the fine soil tillage device 70 and the tiller 90 is configured such that the front and rear positions with respect to the main tillage device 50 are adjustable.

  The upper arm 35 and the support arm 37 may be configured to be provided with a fine soil plowing depth adjustment mechanism and a vertical position adjustment mechanism (not shown) similar to the plowing depth adjustment handle 34 described above. . By providing the fine soil plowing depth adjusting mechanism and the vertical tiller vertical position adjusting mechanism, the vertical relative positions of the fine soil tillage device 70 and the vertical tiller 90 with respect to the main tillage device 50 can be adjusted. . When the relative position in the vertical direction of the fine soil tillage device 70 and the vertical stand 90 with respect to the main tillage device 50 may be the same, both are attached to the same strut, for example, the upper arm 35. It may be a configuration.

  FIG. 2 is an enlarged side view of the main part of FIG. FIG. 3 is a rear view in which a part of the biaxial rotary tiller 30 is omitted.

  The main tillage device 50 has a main claw shaft rotor center case 51 at a substantially central portion in the width direction. A drive input shaft 52 projects from the front surface of the main claw shaft rotor center case 51. The drive input shaft 52 is linked to the PTO shaft 25 via a universal joint shaft 53. The main claw shaft rotor center case 51 incorporates a power transmission mechanism such as a bevel gear (not shown) that transmits the power of the drive input shaft 52 extending in the front-rear direction in the width direction. The main claw shaft rotor center case 51 is rotatably connected to the lower end of the above-described upper connecting portion 32 at the upper side.

  A cylindrical rotary main beam 54 extends from the main claw shaft rotor center case 51 on both sides in the width direction. The cylindrical rotary main beam 54 incorporates a power transmission shaft 55 that extends in the width direction and is pivotally coupled to the power transmission mechanism. The cylindrical rotary main beam 54 is connected to the rear end of the lower connecting portion 31 described above.

  The upper part of the main claw shaft transmission side case 56 extending substantially in the vertical direction is fixed to one end (left side in the illustration of FIG. 3) of the rotary main beam 54 extending left and right. On the other hand, on the other end of the rotary main beam 54 (on the right side in the illustration of FIG. 3), an upper portion of a bracket 57 extending substantially in the vertical direction is fixed so as to face the main claw shaft transmission side case 56. A main claw shaft rotor 58 extending between the lower portions of the main claw shaft transmission side case 56 and the bracket 57 is rotatably provided. A plurality of main claws 59 extending radially in the radial direction are attached to the main claw shaft rotor 58.

  Each of the output end of the power transmission shaft 55 and the input end of the main claw shaft rotor 58 protrudes into the main claw shaft transmission side case 56. Sprockets (not shown) are fixed to the output end of the power transmission shaft 55 and the input end of the main claw shaft rotor 58, respectively. The sprockets are interlocked and connected by an endless chain (not shown).

  Thus, in the main tillage device 50, the power input from the PTO shaft 25 via the universal joint shaft 53 is supplied to the drive input shaft 52, the power transmission mechanism, the power transmission shaft 55, the endless chain, and the main claw shaft rotor 58. It is comprised so that it may be transmitted.

  The illustrated main tillage device 50 is a side drive type, and the main claw shaft transmission side case 56 is provided on one end side of the rotary main beam 54. However, the main tillage device 50 may be a center drive type. In this case, a configuration corresponding to the main claw shaft transmission side case 56 is provided extending downward from the main claw shaft rotor center case 51.

  A rotary main cover 60 is provided so as to surround the main claw shaft rotor 58 and the rotation locus L1 of the main claw 59. The rotary main cover 60 includes an upper surface cover disposed so as to cover the rotation path L1 of the main claw 59 in the width direction, and a pair of left and right side covers provided at both ends in the width direction of the upper surface cover. In the drawing, the display of the side cover is omitted. A mounting portion 61 is provided at the rear end of the rotary main cover 60 so as to extend in the width direction.

  The fine soil tillage device 70 is attached to the main tillage device 50 with a predetermined front-rear axis distance H and upper / lower axis distance V. Here, the axis refers to the rotation axis of the rotor of each device. The shaft of the fine soil tillage device 70 is disposed above the shaft of the main tillage device 50. As described above, the fine soil tillage device 70 is configured to be adjustable from the initial front-rear axis distance H and the upper-lower axis distance V.

  The fine soil tillage device 70 includes, for example, a motor 71 as a drive source. Therefore, the biaxial rotary tiller 30 according to this embodiment is configured such that the fine soil tiller 70 and the main tiller 50 are individually driven. The driving of the motor 71 is controlled by a control unit (not shown).

  An electric motor may be used as the motor 71. By using an electric motor as a drive source, the drive source provided in the thin soil tillage device 70 can have a simple configuration, and can easily output high-speed rotation, thereby further improving work efficiency. . The electric motor is detachably connected to the battery BT of the tractor 10 by a coupler (not shown).

  On the other hand, a hydraulic motor may be used as the motor 71. By using a hydraulic motor as a drive source, the drive source provided in the fine soil tillage device 70 can be configured in a simple manner, a high output can be easily obtained, and work efficiency can be further improved. Furthermore, by using a hydraulic motor, forward rotation, stop, and reverse rotation can be easily changed continuously. A flexible hydraulic hose (not shown) is connected to the hydraulic motor. And it connects with the external hydraulic pressure taking-out port (not shown) of tractor 10 so that attachment or detachment is possible by the hydraulic coupler (not shown) which a hydraulic hose has. As the hydraulic motor, for example, a plunger motor may be used, and among them, an axial swash plate type, an axial swash shaft type, a radial type, or the like may be used.

  The fine soil tillage device 70 further includes a gear box 72 below the motor 71. The gear box 72 incorporates a power transmission mechanism such as a bevel gear (not shown) that transmits the power of the output shaft of the motor 71 extending in the vertical direction in the width direction. The gear box 72 rotatably supports the claw shaft rotor 73 for fine soil extending on both sides in the width direction. A plurality of fine soil claws 74 are attached to the fine soil claw shaft rotor 73 as crushed soil claws extending radially in the radial direction. A case 75 is provided between the motor 71 and the gear box 72 and extends in the vertical direction and encloses the output shaft of the motor 71.

  It is more preferable that the fine soil tillage device 70 is further configured to include a vertical position adjusting mechanism that can change the vertical position. For example, an upper arm 35 is used as the vertical position adjusting mechanism. The upper arm 35 is configured such that the rear end side thereof is rotatable in the vertical direction. The fine soil tillage device 70 attached to the upper arm 35 allows the vertical position of the fine soil claw shaft rotor 73 and the fine soil pawl 74 with respect to the main tillage device 50. The fine soil tillage device 70 is swingably attached in the front-rear direction with the upper frame 36 as an axis. Note that a hydraulic cylinder may be used between the upper frame 36 and the motor 71 as the vertical expansion / contraction adjustment mechanism. However, if the motor 71 is provided in the vicinity of the claw shaft rotor 73 for fine soil or the claw 74 for fine soil, soil adheres to the motor 71.

  It is more preferable that the fine soil tillage device 70 is further configured to include a front / rear expansion / contraction adjustment mechanism that is expandable / contractible substantially in the front / rear direction. For example, as shown in FIG. 2, a hydraulic cylinder 76 is used as the front / rear expansion / contraction adjustment mechanism. One end of the hydraulic cylinder 76 is attached to the rear surface of the main claw shaft rotor center case 51, a frame (not shown) attached to the upper arm 35, and the like. The other end of the hydraulic cylinder 76 is rotatably attached to an attachment pin 77 provided on the outer periphery of the case 75 or the like. As described above, the fine soil tillage device 70 is swingably attached about the upper frame 36 as an axis. Therefore, the fine soil tillage device 70 having the hydraulic cylinder 76 can freely position the fine soil claw shaft rotor 73 and the fine soil pawl 74 in the front-rear direction with respect to the main tillage device 50.

  Therefore, the fine soil tillage device 70 according to the present embodiment allows the fine soil claw shaft rotor 73 and the fine soil pawl 74 to be positioned in the vertical direction and the longitudinal direction with respect to the main tillage device 50. That is, the fine soil claw shaft rotor 73 can be adjusted in the vertical direction and the front-rear direction with reference to the main claw shaft rotor 58.

  A flexible hydraulic hose (not shown) is connected to the hydraulic cylinder 76. The hydraulic hose has a hydraulic coupler (not shown) and is configured so that it can be easily attached to an external hydraulic outlet port (not shown) of the tractor 10. The rotation of the upper arm 35 and the operation of the hydraulic cylinder 76 are controlled by the control unit. Therefore, the fine soil tillage device 70 according to the present embodiment is configured to be controllable in the vertical direction and the front-back direction of the fine soil claw shaft rotor 73 and the fine soil claw 74 with respect to the main tillage device 50. Yes.

  The fine soil tillage device 70 is not limited to be configured as a side drive type. In any type, if the fine soil claw shaft rotor 73 and the fine soil claw 74 of the fine soil tillage device 70 are controllable in the vertical direction and the longitudinal direction with respect to the main tillage device 50. good.

  However, the fine soil tillage device 70 is more preferably a center drive type. With the center drive type, the vertical adjustment mechanism of the fine soil tillage device 70 can have a simple configuration, can be easily attached and detached, and work efficiency can be further improved.

  Further, the fine soil tillage device 70 may be configured to be attached to the rotary main cover 60. However, the vertical adjustment mechanism of the fine soil tillage device 70 with respect to the main tillage device 50 is complicated.

  A fine soil rotary main cover 77 and a rotary rear cover 78 are provided so as to surround the rotation locus L2 of the fine soil claw shaft rotor 73 and the fine soil claw 74. The fine soil rotary main cover 77 is configured to be connectable to the attachment portion 61 of the rotary main cover 60. The rotary main cover 77 includes an upper surface cover disposed so as to cover the upper portion of the rotation locus L2 of the fine soil claw 74 and a pair of left and right side covers provided at both ends in the width direction of the upper surface cover. Note that the top cover is not provided at a position overlapping the motor 71, the gear box 72, and the case 75 in plan view. In the drawing, the display of the side cover is omitted.

  The rotary rear cover 78 includes a rear cover disposed so as to cover the rear of the rotation locus L2 of the fine soil claw 74 and a pair of left and right side covers provided at both ends in the width direction of the rear cover. In the drawing, the display of the side cover is omitted. The rear cover is configured to be rotatable about a hinge 79 extending in the width direction between the fine soil rotary main cover 77 and the rotary rear cover 78. The rear end of the rear cover is configured to be leveled in contact with the upper surface of the formed ridge. The rotary rear cover 78 may be supported by the lower end of a hanger rod (not shown) whose upper part is connected to the rear part of the above-described tilling depth adjusting bar. In this case, the rotary rear cover 78 can function as a tilling depth sensor.

  An upper end of a vertical arm 91 is attached to the support frame 38 so as to extend downward and adjust the position in the width direction. The elevator 90 is supported by the lower part of the elevator arm 91. The erecting device 90 is composed of a pair of left and right molded plates 92, 92.

  FIG. 3 shows a rotary rear cover-forming plate line 93 in which the positions of two pairs of forming plates 92 arranged in the width direction and the position of the rotary rear cover 77 are connected. A line extending vertically indicates the position of the molding plate 92, and a line extending horizontally indicates the position of the rotary rear cover 77. The rotary rear cover-forming plate line 93 is a measure of the wrinkles that are formed.

  Each of the pair of left and right molded plates 92, 92 is configured such that the upper part is inclined inward in the width direction rather than the lower part. It is more preferable that the bottom plates of the forming plates 92 and 92 are respectively provided with earthing plates 94 and 94 configured such that the rear portion is inclined inward in the width direction rather than the front portion. In addition, the number of the shaping | molding plates 92 and 92 can be suitably changed according to the usage type of the biaxial rotary tiller 30, the dimension of the width direction, etc. Furthermore, the distance between the pair of left and right molded plates 92, 92 may be configured to be adjustable according to the width of the ridge formed, and can be changed as appropriate.

  In the figure, the forming plates 92 and 92 and the earthing plates 94 and 94 are located behind the fine soil tillage device 70. However, both ends of the claw shaft rotor 73 for the fine soil extending in the width direction may be shortened, and the forming plates 92 and 92 and the earthing plate 94 may be configured to extend forward to a position covering the rotation locus L2.

  As shown in FIG. 3, a plurality of main claws 59 of the main tillage device 50 are attached along a main claw shaft rotor 58 extending in the width direction. Similarly, it is not limited that a plurality of fine soil pawls 74 of the fine soil tillage device 70 are attached along the narrow soil pawl shaft rotor 73 extending in the width direction. However, as shown in FIG. 3, it is more preferable that the fine soil claws 74 of the fine soil tillage device 70 are arranged corresponding to the top and center of the ridge formed by the ridger 90. By providing the fine soil pawl 74 at this position, the fine soil tillage device 70 can be crushed at an appropriate position of the ridge to be formed, and work efficiency can be further improved. The fine soil pawls 74 may be configured to be movable in the width direction after being provided over the entire width of the fine soil pawl shaft rotor 73.

  The tractor 10 configured as described above and the biaxial rotary tiller 30 are coupled via a three-point link mechanism, and the PTO shaft 25 and the drive input shaft 52 are coupled. The tractor 10 advances by pulling the biaxial rotary tiller 30 and transmits the driving force of the engine E to the drive input shaft 52 through the PTO shaft 25. The main pawl shaft rotor 58 is rotated from the drive input shaft through the power transmission mechanism, the power transmission shaft 55, and the endless chain by the driving force of the engine E, and the motor 71 is driven by the driving force of the motor 71. The soil claw shaft rotor 73 rotates. In this manner, the soil in the field is roughened at a predetermined plowing depth, and the ground at a predetermined plowing depth with respect to the relatively large-grained soil that has been roughened is crushed. Done and the surface is leveled.

  FIG. 4 is a schematic cross-sectional view of the rod F formed after the work by the biaxial rotary tiller 30 as seen from the traveling direction side.

  The coarse soil c roughened by the main tillage device 50 is further crushed by the fine soil tillage device 70 to form fine soil f. Coarse soil c is gathered toward the inner side in the width direction by the earth gathering plates 94, 94, and further, the fences F are formed by the coarse plates c and fine soil f by the forming plates 92, 92.

  The fine soil tillage device 70 is located above the main tillage device 50, and is configured to break up the coarse soil c formed by the main tillage device 50 more finely. Therefore, the fine soil f is efficiently formed in the place where the crop P on the upper side of the ridge F is planted.

  The number of rotations of the main claw shaft rotor 58 of the main tillage device 50 only needs to be such that the formation of the ridge F is possible. However, if the rotation speed of the main tillage device 50 is less than 100 rpm, the soil may not be sufficiently crushed. On the other hand, when the rotation speed of the main tillage device 50 is greater than 200 rpm, energy loss increases and productivity is likely to decrease. Therefore, the rotation speed of the main tillage device 50 is more preferably 100 rpm or more and 200 rpm or less. If the rotation speed of the main claw shaft rotor 58 is within this range, the main tillage device 50 can efficiently crush the soil to form the cocoon F, thereby further improving the work efficiency. And the main tillage apparatus 50 can perform the formation of the hook F reliably, and can improve the performance of work more.

  On the other hand, the claw shaft rotor 73 for fine soil has a main claw shaft rotor 58 so that the tillage soil can be transported and taken out so that the claw shaft rotor 73 for fine soil does not become a resistance of the cultivated soil during tilling. It is better to synchronize at the same rotation speed.

  However, the fine soil tillage device 70 needs to form a finer grain size. Therefore, the rotational speed of the fine soil pawl shaft rotor 73 of the fine soil tillage device 70 is larger than that of the main pawl shaft rotor 58 of the main tillage device 50. Since the number of rotations of the fine soil claw shaft rotor 73 is larger than that of the main claw shaft rotor 58, the crushing can be efficiently performed, and the work efficiency can be further improved. And the tilling device 70 for fine soil can perform crushed soil reliably, and can improve the performance of crushed soil more.

  Furthermore, in the biaxial rotary tiller 30 according to the present embodiment, the claw shaft rotor 73 for fine soil can be adjusted in the vertical direction with the main claw shaft rotor 58 as a reference, so that it is positioned above the ridge F. The vertical amount, that is, the depth of the fine soil f to be changed is variable.

  FIG. 5 is a schematic cross-sectional view taken along line VV in FIG. 4, and is a schematic view of the ridge F formed after the work by the biaxial rotary tiller 30 as viewed from the side in the traveling direction. In FIG. 5, the biaxial rotary tiller 30 has advanced to the left, and the main pawl 59 of the main tiller 50 and the fine soil pawl 74 of the fine soil tiller 70 are schematically shown.

  One feature of the biaxial rotary tiller 30 according to this embodiment is that the vertical position of the fine soil tiller 70 with respect to the main tiller 50 can be controlled. FIG. 5 shows an example of soil tillage in which the feature is utilized. When only the vertical direction of the fine soil tillage device 70 is controlled, the hydraulic cylinder 76 may be omitted.

  It is assumed that planting in the period C is planned along the traveling direction of the biaxial rotary tiller 30 in the cocoon F. Here, for example, when the tractor 10 is traveling at a constant traveling speed v, the upper arm 35 moves up and down at a rate of once every time T = C / v, and the fine soil claw shaft rotor 73 is moved. , And the claw 74 for fine soil moves to the position of the lowest point.

  The lowest point of the trajectory of the fine soil claw 74 is sine by the progress of the tractor 10 at a constant traveling speed v and the vertical movement of the fine soil claw shaft rotor 73 and the fine soil claw 74 in the cycle C. Draw a curve. A region of fine soil f is formed above the drawn sine curve. Then, planting is performed in a region crushed to the deepest position at intervals of the period C.

  Therefore, according to the biaxial rotary tiller 30 according to the present embodiment, the fine soil tiller 70 is periodically controlled in the vertical direction, so that the soil can be crushed at predetermined intervals. Since the planting area can be efficiently formed, the work efficiency can be further improved.

  In FIG. 5, a fine soil f region is continuously formed at the upper end of the ridge F. However, in some cases, the finest claw 74 has a state where the lowest point of the claw 74 protrudes above the upper end of the ridge F, that is, the fine claw 74 is completely exposed to the ground surface. The claw 74 may be controlled to move up and down. By such control, a region of fine soil f is formed discontinuously at the upper end of the ridge F. That is, it is possible to form a partial fine soil on the top of the ridge F. Furthermore, since the area where the claw 74 for fine soil crushes becomes smaller, the frequency of occurrence of tangling of unnecessary materials such as grass and clogging of soil can be reduced, and the claw 74 for fine soil is exposed to the ground surface. At this stage, we can remove entangled grass and attached soil.

  About the depth of the fine soil f, it adjusts suitably according to soil quality, the kind of crop, etc. For example, in the case of soil in which a crust (a hard surface layer) is easily formed by plowing, the fine soil claw shaft rotor 73 and the fine soil claw 74 may be set to move up and down shallowly.

  The vertical movement of the fine soil tillage device 70 may be performed based on the moving distance of the tractor 10. However, if the traveling speed v of the tractor 10 changes, the crushed soil may be insufficient if the vehicle speed is high, while the crushed soil may be more than necessary if the vehicle speed is low. Therefore, when the fine soil tillage device 70 is positioned below, the hydraulic cylinder 76 also moves forward or backward to control the amount of change from the reference vehicle speed. It may be configured to be performed. By such control, the passing speed of the fine soil tillage device 70 at a place where planting is performed becomes constant. Therefore, the degree of crushed soil can be adjusted.

  As described above, in the biaxial rotary tiller 30 according to the present embodiment, the fine soil tiller 70 includes the motor 71 and is provided so as to be controllable in the vertical and longitudinal directions with respect to the main tiller 50. According to this configuration, in the upper part of the ridge F to be formed, crushed soil can be performed only at a place where planting is performed, that is, a place where the fine soil f is required, and work efficiency can be improved. Furthermore, it is possible to prevent tangling of unnecessary materials such as grass and soil clogging, and to maintain the performance of the crushed soil well.

  Further, in the biaxial rotary tiller 30 according to the present embodiment, the fine soil tillage device 70 is replaced with a configuration in which the fine soil tillage device 70 is controllable in the vertical and longitudinal directions with respect to the main tillage device 50. The number of rotations of 70 may be configured to be controllable. By utilizing the feature, the ridge F shown in FIG. 5 can be formed. In the case of such a configuration, either or both of the vertical position adjustment mechanism by the upper arm 35 and the front / rear expansion / contraction adjustment mechanism by the hydraulic cylinder 76 can be omitted. For example, when the hydraulic cylinder 76 is omitted, the fine soil tillage device 70 may be configured not to swing around the upper frame 36 as an axis.

  As in the case described above, it is assumed that planting at the cycle C is planned along the traveling direction of the biaxial rotary tiller 30. Here, for example, when the tractor 10 is traveling at a constant traveling speed v, the rotational speed of the fine soil claw shaft rotor 73 is changed at a rate of once per time T = C / v. As the claw shaft rotor 73 for fine soil rotates faster, the claw 74 for fine soil crushes the soil finely. Note that the maximum rotation speed of the fine soil tillage device 70 is larger than the rotation speed of the main tillage device 50. Thus, the crushed soil can be efficiently performed, the work efficiency can be further improved, the crushed soil can be reliably performed, and the performance of the crushed soil can be further improved.

  Then, the fine soil claw 74 periodically forms the fine soil f region by the progress of the tractor 10 at a constant traveling speed v and the fluctuation of the rotational speed of the fine soil claws shaft rotor 73 in the cycle C. Then, planting is performed in a region finely crushed at intervals of the period C.

  Thus, according to the biaxial rotary tiller 30 according to the present embodiment, the rotational speed of the fine soil tiller 70 is controlled so as to periodically change, so that at predetermined intervals. Crushing can be performed and work efficiency can be further improved.

  For example, when it is desired to sufficiently pulverize the soil and promote the drying of the soil, an adjustment may be made such that the number of rotations of the fine soil claw shaft rotor 73 is increased. The number of rotations of the fine soil pawl shaft rotor 73 is appropriately adjusted according to soil quality, crop type, and the like in consideration of water permeability, water retention, air permeability, and the like.

  As described above, in the biaxial rotary tiller 30 according to the present embodiment, the fine soil tillage device 70 includes the motor 71 and the number of rotations of the fine soil tillage device 70 is controllable. According to this configuration, in the upper part of the ridge F to be formed, crushed soil can be performed only at a place where planting is performed, that is, a place where the fine soil f is required, and work efficiency can be improved. Furthermore, it can be crushed to a desired particle size, and the performance of the crushed soil can be maintained well.

  In the biaxial rotary tiller 30 according to the present embodiment, the fine soil tillage device 70 is configured to be controllable in the vertical and longitudinal directions with respect to the main tillage device 50, and the fine soil tillage device 70 It is possible to freely combine the configuration in which the number of rotations is controllable. With such a configuration, it is possible to further increase the degree of freedom for forming the ridge F.

  For example, in addition to the configuration in which the fine soil tillage device 70 is provided so as to be controllable in the front-rear direction with respect to the main tillage device 50, the rotational speed of the fine soil tillage device 70 is provided so as to be controllable. it can. In that case, when the traveling speed v of the tractor changes in addition to the fluctuation of the rotational speed of the claw shaft rotor 73 for fine soil in the period C, the hydraulic cylinder 76 moves forward or backward. Control may be performed to absorb the amount of change from the reference vehicle speed. By such control, the passing speed of the fine soil tillage device 70 at a place where planting is performed becomes constant. Therefore, the degree of crushed soil can be adjusted.

  Further, in addition to them, the fine soil tillage device 70 can be configured to be controllable in the vertical direction with respect to the main tillage device 50. In that case, for example, when the fine soil claw 74 is exposed to the ground, the grass is entangled when the fine soil claw 74 is exposed to the ground. Etc. or removal of attached soil may be performed. Such control can further prevent tangling of unnecessary materials such as grass and soil clogging, and can maintain the performance of the crushed soil better.

  Furthermore, in the biaxial rotary tiller 30 according to the present embodiment, the main tiller 50 and the fine soil tiller 70 can be rotated forward (down cut) and reverse (up cut), respectively. It is preferred that The motor 71 and the PTO shaft 25 that drives the main claw shaft rotor 58 can be remotely operated forward / reversely or stopped by a panel provided on the dashboard 16 or an operator provided near the driver's seat 20. Is more preferable. The control unit controls the rotation speed, rotation direction, and the like of the motor 71 and the main claw shaft rotor 58 based on the input value on the panel and the movement amount of the operation element.

  By adopting a configuration that allows forward and reverse rotation, it is possible to remove soil using reverse rotation, remove entangled grass, and attached soil. Therefore, with this configuration, it is possible to further prevent tangling of unnecessary materials such as grass and clogging of the soil, and to maintain the performance of the crushed soil better.

  It should be noted that control for reverse rotation may be performed at the stage where the fine soil claw 74 is exposed on the ground surface, as described with reference to FIG. Similarly to the above, it is possible to further prevent tangling of unnecessary materials such as grass and clogging of the soil, and to maintain the performance of the crushed soil better.

  6 shows an example of the claw 100 attached to the biaxial rotary tiller, FIG. 6A is a front view thereof, FIG. 6B is a side view thereof, and FIG. 6C is a plan view thereof. The nail | claw 100 has the leaf-like form of a tree by front view. Further, the claw 100 has blade surfaces 101 and 101 on both sides thereof. And the nail | claw 100 forms the blade edge | tip 102 which the lower end bent toward the outer side.

  As the main nail 59 and the fine soil nail 74 described above, for example, a nail claw may be used. However, the forward and reverse claws 100 shown in FIG. 6 are used, so that the main pawl shaft rotor 58 of the main tillage device 50 and the fine soil pawl shaft rotor 73 of the fine soil tillage device 70 are rotated normally. When switching between rotation and reverse rotation, it is not necessary to attach and change the main claw 59 and the claw 74 for fine soil. Therefore, by using the nail | claw 100, normal rotation and reverse rotation can be switched rapidly and work efficiency can be improved more.

  In addition, the direction in which the blade edge 102 of the claw 100 attached to the main claw shaft rotor 58 and the claw shaft rotor 73 for fine soil is bent is appropriately arranged inward and outward in the width direction. A claw 100 having a pair of a claw 100 bent inward in the width direction and a claw 100 bent outward may be used.

  FIG. 7 is an enlarged side view of a main part of a modification. The biaxial rotary tiller 30 according to the present embodiment may further include a spreading device 110.

  A machine frame of the biaxial rotary tiller 30, for example, a support 111 extending upward from the rear end of the support arm 37 is attached. A hopper 112 and a spraying device 110 including a feeding device 113 are attached to the upper portion of the column 111. The hopper 112 that accommodates the marker 114 that serves as a mark when sprayed on the soil is formed in a funnel shape that decreases in diameter downward. The marker 114 only needs to have a high visibility as a mark for soil, such as lime, and may be solid or liquid. A feeding device 113 is connected under the hopper 112. The feeding device 113 incorporates a rotation shaft (not shown) that is rotated by a motor (not shown). The marker 114 accommodated in the hopper 112 is discharged by a certain amount by the rotation of the rotating shaft.

  One end of a flexible outlet tube 115 is attached below the feeding device. A hole 116 is formed in the rotary rear cover 77 with a lid. The lead-out pipe 115 passes through the hole 116 and is drawn to the vicinity of the upper part of the ridge F. The other end of the outlet tube 115 is open, and the marker 114 fed out from the feeding device 113 is scattered on the ridge F. In addition, the structure further provided with the blower for pumping the marker 114 may be sufficient.

  By being configured in this way, the marker 114 is scattered on the surface of the fine soil f on which the crushed soil has been performed. Therefore, the marker 114 as a mark can be visually recognized more clearly. In that case, intermittent spraying in conjunction with the above-described cycle C may be used. Locations intermittently sprayed at intervals of the period C serve as a standard for the planting area.

  In addition, the soil improvement material, a fertilizer, a box application agent, etc. may be substituted for the marker 114 accommodated in the hopper 112 of the spraying apparatus 110, Furthermore, you may mix with these.

  As described above, the biaxial rotary tiller 30 according to the present embodiment includes the hopper 112 that accommodates the marker 114, and is configured to spray the marker 114 to the places where the fine soil tiller 70 has crushed soil. good. According to such a configuration, the location where the fine soil f is formed can be clearly indicated by the fine soil tillage device 70, and the work efficiency can be further improved.

  As described above, according to this embodiment, it is possible to provide the biaxial rotary tiller 30 in which the crushed soil region is adjustable. And according to the biaxial rotary tiller 30 according to the present embodiment, in the upper part of the ridge F to be formed, the soil is crushed only at the place where planting is performed, that is, the place where the fine soil f is required. It is possible to improve work efficiency. Furthermore, according to the biaxial rotary tiller 30 according to the present embodiment, it is possible to prevent tangling of unnecessary objects such as grass and clogging of soil, and to maintain the performance of crushed soil well.

  The biaxial rotary tiller of the present invention is not limited to being pulled by a riding-type work vehicle such as a tractor. For example, as a device for tilling all kinds of soil such as a walking type tiller. Can be applied.

30 2-axis rotary tiller 50 First tiller (main tiller)
70 Second tillage device (fine soil tillage device)
71 Drive source (motor)
74 Crushing nail (nail for fine soil)
90 Tail stand 100 Claw 110 Spreading device 112 Hopper 114 Marker C Period c Coarse soil F 畝 f Fine soil H Distance between front and rear axes of main tillage device and fine soil tillage device V Main tillage device and fine soil Distance between top and bottom axes with the tillage device

Claims (13)

A first tillage device;
A second tillage device detachably provided behind the first tillage device;
In a two-shaft rotary tiller having a vertical stand,
The second tillage device includes a drive source, and is provided so as to be controllable in the vertical and longitudinal directions with respect to the first tillage device. The biaxial rotary tiller according to claim 1, wherein the second tillage device is periodically controlled in the vertical direction. 3. The biaxial rotary tiller according to claim 1, wherein the rotation speed of the second tillage device is larger than the rotation speed of the first tillage device. A first tillage device;
A second tillage device detachably provided behind the first tillage device;
In a two-shaft rotary tiller having a vertical stand,
The second tillage device includes a drive source, and the rotational speed of the second tillage device is provided to be controllable. The biaxial rotary tiller according to claim 4, wherein the rotation speed of the second tiller is controlled so as to periodically change. The biaxial type according to any one of claims 4 to 5, wherein the maximum value of the rotation speed of the second tillage device is larger than the rotation speed of the first tillage device. Rotary tillage device. The biaxial rotary tiller according to any one of claims 3 and 6, wherein the rotation speed of the first tiller is 100 rpm or more and 200 rpm or less. The biaxial rotary according to any one of claims 1 to 7, wherein the rotation of the first tillage device and the second tillage device are forwardly and reversely rotatable, respectively. Tillage equipment. The biaxial rotary tiller according to any one of claims 1 to 8, wherein the drive source is an electric motor. The biaxial rotary tiller according to any one of claims 1 to 8, wherein the drive source is a hydraulic motor. The said 2nd tilling apparatus is a center drive type attached to the upper arm extended rearward from the center case to which the said 1st tilling apparatus is attached, The one of Claim 1 thru | or 10 characterized by the above-mentioned. 2 axis type rotary tiller. 12. The ground claw of the second tillage device is arranged corresponding to a top and a center of a ridge formed by the ridger. 12. 2-axis rotary tiller. The biaxial rotary tiller according to any one of claims 1 to 12, further comprising a hopper that accommodates the marker, wherein the marker is sprayed on the place where the second tillage device is crushed. .

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