JP2006042747A - Tilling rotor of farm implement - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent an accident that pretreating rotors are co-rotated and damaged by a field soil pressure receiving with the travel of a farm implement. <P>SOLUTION: A balk-coating implement comprises a pretreating rotor 21 for scraping away an old balk and piling up the soil, and a balk-arranging portion for coating the old balk with the piled soil. The pretreating rotor 21 comprises an intermediate cylindrical shaft 31 fit onto a rotary shaft 12 projected from and supported on a pretreating power transmission case 11 in a torque-transmittable state, and a cylindrical shaft 41 fit onto the intermediate cylindrical shaft 31 and used for attaching tilling tines thereto. A flange 43 attached to the cylindrical shaft 41 is disposed on the rear side of a flange 32 disposed in the intermediate cylindrical shaft 31 in the travel direction of the cylindrical shaft 41, and connected and fixed to the flange 32 disposed in the intermediate cylindrical shaft 31 with a shear bolt 80. The cylindrical shaft 41 is fit onto the intermediate cylindrical shaft 31 with a play in the axial direction. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a tilling rotor for an agricultural machine that repels soil in a farm while traveling.

  As a farming machine equipped with such a tilling rotor, a tacking machine that performs a tacking work is known. In general, in the cocoon coater, the tilling rotor repels the soil cut from the side of the old paddle and fills the old paddle, and the soil with the trimming section 70 is applied onto the old paddle. (See Patent Document 1).

  The tilling rotor (filling rotor 15 in the literature) of this padding work machine is configured such that when the rotor comes into contact with stones, obstacles, etc. There is a possibility that a large impact load acts on the tilling rotor and damages the tilling claw and the like. In view of this, the tacking machine is provided with a safety mechanism that connects and fixes the flange provided on the tilling rotor and the flange provided on the rotary shaft (rotor rotary shaft 25 in the literature) with shear pins or shear bolts. For this reason, when an impact load is applied to the tilling nail and a shearing force exceeding a predetermined value is applied to the shear pin or shear bolt, the shear pin or shear bolt is actively broken to drive the tilling rotor, gear, chain, etc. System damage can be prevented in advance.

Registered Utility Model No. 2502866 Publication

  This conventional tillage rotor is installed with its rotating shaft extending in a direction along the traveling direction, and a flange provided on the tilling rotor is arranged on the front side in the traveling direction with respect to the flange of the rotating shaft. For this reason, when the shear bolt or shear pin breaks and torque transmission from the rotary shaft to the tilling rotor becomes impossible, the flange of the tilling rotor receives earth pressure from the field due to the progress of the tilling rotor and presses against the flange of the rotating shaft. There is a risk that the tilling rotor rotates together with the tilling rotor and the attachment surface of the flange of the tilling rotor, the shear bolt or the like is seized.

  In addition, the conventional tiller rotor rotates together even if the shear bolt etc. breaks, so the operator may continue working without noticing the fracture of the shear bolt etc. Or the damage of the tilling rotor is increased.

  The present invention has been made in view of such a problem, and prevents the tilling rotor from co-rotating when the shear bolt or the like breaks, prevents the tilling rotor from being damaged, and breaks the shear bolt or the like. It is an object of the present invention to provide a tilling rotor for an agricultural machine that can be easily recognized by an operator.

  In order to achieve the above object, the tilling rotor (for example, the pretreatment rotor 21 in the embodiment) of the agricultural machine (for example, the padding work machine 1 in the embodiment) of the present invention has a transmission case (for example, the pretreatment in the embodiment). An intermediate cylinder shaft extending in the same direction as the rotation shaft is externally fitted on the rotation shaft supported by protruding from the power transmission case 11) so that torque can be transmitted. The flange provided on the intermediate cylinder shaft and the flange provided on the cylinder shaft for attaching the tillage claw are connected and fixed by shear pins or shear bolts.

  According to the present invention, when an impact load is applied to the tilling nail by connecting and fixing the flange of the intermediate cylinder shaft and the flange of the cylinder shaft for attaching the tilling nail with the shear pin or the shear bolt, the shearing force due to the impact load is reduced. If the predetermined value is exceeded, the shear pin or shear bolt breaks. For this reason, the situation where an impact load is transmitted to a tilling rotor etc. is prevented, and damage to a tilling rotor etc. can be prevented beforehand.

  Further, the present invention is characterized in that the flange of the cylinder shaft for attaching the tillage claw is disposed behind the intermediate cylinder shaft in the traveling direction and is connected and fixed to the flange of the intermediate cylinder shaft by a shear pin or a shear bolt. And

  According to this invention, when the progress of the tilling rotor continues in a state where the shear pin or the shear bolt is broken by disposing the flange of the cylinder shaft for mounting the tillage claws on the rear side in the traveling direction from the flange of the intermediate cylinder shaft, The tube shaft moves to the side away from the intermediate tube shaft by the earth pressure received from the field as it progresses. For this reason, a gap can be formed between the flange of the intermediate cylindrical shaft and the flange of the cylindrical shaft, and the situation where the cylindrical shaft rotates together with the rotating intermediate cylindrical shaft can be prevented. Occurrence of a situation where the mounting surfaces of the flange and the flange of the cylindrical shaft are seized can be prevented. In addition, when the shear pin or the like breaks in the cylinder shaft for attaching the tilling claw, power transmission from the rotating shaft is lost, so that the tilling rotor is stopped. As a result, the operator can easily recognize that the shear pin or the like is in a broken state, and can prevent incomplete work or expansion of damage to the drive system such as the tilling rotor, gear, and chain.

  Furthermore, the present invention is characterized in that a cylinder shaft for attaching a tilling nail is externally fitted so as to be movable rearward in the traveling direction along the intermediate cylinder shaft after the shear pin or shear bolt is broken.

  According to the present invention, when the shear pin or the shear bolt is broken by externally fitting the cylinder shaft for attaching the tillage nail so as to be movable rearward in the traveling direction along the intermediate cylinder shaft after the shear pin or shear bolt is broken, The shaft moves rearward in the traveling direction along the intermediate cylinder shaft due to the earth pressure received in the field as it travels. For this reason, the flange of the intermediate cylinder shaft and the flange of the cylinder shaft for attaching the tillage claw can be brought into a non-contact state.

  In addition, the present invention is characterized in that the farm work machine is a padding work machine that continuously forms straws such as farm fields.

  According to the present invention, by using a farming machine as a paddy working machine, it is possible to prevent the tilling rotor from rotating together, prevent the tilling rotor from being damaged, and easily recognize the breaking of the shear bolt or the like. It is possible to provide a tilling rotor for a tacking machine having the same.

  According to the tilling rotor of the agricultural machine according to the present invention, the flange of the intermediate cylinder shaft and the flange of the cylinder shaft for attaching the tilling claw are connected and fixed by the shear pin or the shear bolt, and the cylinder shaft for attaching the tilling claw is broken with a shear pin or the like. Attached to the rear intermediate cylinder shaft so that it can move rearward in the direction of travel, the cylinder shaft flange for mounting the tillage claws is located on the rear side in the forward direction than the flange of the intermediate cylinder shaft This prevents the rotation of the tilling rotor, prevents damage to the drive system of the tilling rotor, chain, gear, etc., and allows the operator to easily notice the breaking of the shear bolt etc. Can be provided.

  A preferred embodiment of a tilling rotor of an agricultural machine according to the present invention will be described below with reference to FIGS. In the present embodiment, a pretreatment rotor of a hulling machine that performs a hulling work according to the traveling of the traveling machine body will be described as an example. For convenience of explanation, the directions of the arrows shown in FIG. 1 (plan view) and FIG. 2 (side view) will be described below as the front-rear direction and the left-right direction.

  As shown in FIGS. 1 and 2, the hulling machine 1 is connected to the rear portion of the traveling machine body 90 and proceeds in accordance with the forward movement and the backward movement to perform the hulling work. In contrast, an offset mechanism 10 that can move in the left-right direction and a working unit 20 that is provided on the moving end side (rear end side) and that performs a dashing operation are configured. The working unit 20 includes a pretreatment rotor 21 according to the present invention that cuts the side portions of the old fence and repels the old fence to deposit the earth, and forms the new fence by painting the piled soil on the old fence. And a collar 70.

  The pretreatment rotor 21 is supported via a pretreatment power transmission case 11 connected to a drive shaft case (not shown) extending downward from the moving end side of the offset mechanism 10 and is supported by protruding from the pretreatment power transmission case 11. The rotating shaft 12 is connected. The rotating shaft 12 is configured to rotationally drive the power from the traveling machine body 90 via a power transmission mechanism (not shown).

  When the working unit 20 is moved so that the working direction axis O2 indicating the working direction of the working unit 20 is parallel to the traveling direction A of the traveling machine body 90, the shaft unit 30 serving as the rotation center of the pretreatment rotor 21 moves in the traveling direction. It is installed in a state that is oriented obliquely with respect to A. The shaft portion 30 may be installed such that the working direction axis O2 of the working unit 20 is parallel to the traveling direction A of the traveling machine body 90 or an acute angle with the traveling direction A.

  As shown in FIG. 3, the pretreatment rotor 21 includes the above-described shaft portion 30 connected to the rotary shaft 12 and a plurality of tilling claws 60 that are radially attached to the shaft portion 30. The shaft portion 30 is externally fitted so as to be able to transmit torque to the rotary shaft 12 and extends in the same direction as the rotary shaft 12, and a tilling nail mounting cylindrical shaft 41 fitted on the intermediate cylindrical shaft 31. Have

  As shown in FIG. 4A, the cylindrical shaft 41 is provided with a plurality of attachment boxes 42 for removably attaching the tilling claw 60 to the outer peripheral surface thereof. The mounting box 42 is provided so as to protrude radially with respect to the cylinder shaft 41, and a cutting claw 60 a for cutting and a tilling claw 60 b for lifting up are attached to the mounting box 42. A flange 43 that protrudes radially outward is attached to an end portion on the distal end side of the cylindrical shaft 41. The flange 43 is formed with a through hole 43a for inserting a shear bolt. The flange 43 is disposed on the rear side in the traveling direction (the base end side of the intermediate cylinder shaft 31) with respect to the flange 32 of the intermediate cylinder shaft 31 shown in FIG. It is fixed to the link. Note that the distance between the end surface (mounting surface 43b) on the distal end side of the flange 43 of the cylindrical shaft 41 and the proximal end portion of the cylindrical shaft 41, that is, the length of the cylindrical shaft 41 is set to L1.

  As shown in FIG. 4B, the intermediate cylinder shaft 31 includes a cylinder shaft main body 33 and a spline fitting portion 35 provided on the base end side. The cylindrical shaft main body 33 has a flange 32 that is attached to the outer side on the distal end side and protrudes radially outward. The flange 32 is formed with a through hole 32a through which a shear bolt is inserted. The through hole 32a is formed at a position where it can communicate with the through hole 43a formed in the flange 43 of the cylinder shaft 41 in a state in which the cylinder shaft 41 shown in FIG. ing. A lid portion 34 having a hole 34 a is fixed to the end portion on the distal end side of the cylindrical shaft main body 33. When the bolt 36 is inserted into the hole 34a and screwed into the rotary shaft 12 and tightened, the intermediate cylinder shaft 31 can be attached to the rotary shaft 12 in a state of being prevented from coming off.

  A distance L2 between an end surface (mounting surface 32b) on the base end side of the flange 32 and a base end side end portion of the tube shaft main body 33 is larger than the length L1 of the tube shaft 41 shown in FIG. For this reason, when the cylindrical shaft 41 is fitted on the intermediate cylindrical shaft 31 so that the flange 43 of the cylindrical shaft 41 is positioned closer to the proximal end side of the intermediate cylindrical shaft 31 than the flange 32 of the intermediate cylindrical shaft 31, the cylindrical shaft 41 is It is attached to the intermediate cylinder shaft 31 with play in the axial direction. Accordingly, when the cylindrical shaft 41 is moved along the intermediate cylindrical shaft 31 toward the rotary shaft 12, a gap can be formed between the flange 43 of the cylindrical shaft 41 and the flange 32 of the intermediate cylindrical shaft 31. Details of this gap will be described later.

  The spline fitting portion 35 provided on the proximal end side of the cylindrical shaft main body 33 is fixed by welding or the like and integrated with the cylindrical shaft main body 33. The spline fitting portion 35 is externally fitted to the rotary shaft 12 and is splined to enable torque transmission from the rotary shaft 12 to the cylindrical shaft main body 33.

  As shown in FIG. 3 again, the through holes 32a and 43a provided in the flange 32 of the intermediate cylinder shaft 31 and the flange 43 of the cylinder shaft 41 are inserted into the shear holes for connecting and fixing the flanges 32 and 43, respectively. Bolts 80 are inserted. The shear bolt 80 is designed to be broken when an impact load acts on the rotating tillage claw 60 and a shearing force exceeding a predetermined value acts on the shear bolt 80. A shear pin may be used instead of the shear bolt 80.

  In addition, attachment to the rotating shaft 12 of the intermediate | middle cylinder shaft 31 and the cylinder shaft 41 is performed as follows. First, the tube shaft 41 is fitted on the intermediate tube shaft 31. Then, the cylindrical shaft 41 and the intermediate cylindrical shaft 31 are relatively rotated so that the through holes provided in the flange 43 of the cylindrical shaft 41 and the flange 32 of the intermediate cylindrical shaft 31 communicate with each other. Then, shear bolts 80 are inserted into these through holes to connect and fix the flanges 32 and 43 together. These cylinder shafts are arranged so that the spline fitting portion 35 of the intermediate cylinder shaft 31 faces the rotating shaft 12, and the spline fitting portion 35 is externally fitted to the rotating shaft 12 to be splined. Then, the bolt 36 is fastened to the rotating shaft 12. As a result, the intermediate cylindrical shaft 31 is attached to the rotary shaft 12 in a state of being prevented from being removed via the bolts 36, and the intermediate cylindrical shaft 31 and the cylindrical shaft 41 are connected and fixed to the rotary shaft 12.

  Next, the operation of the pretreatment rotor 21 will be described. First, the working unit 20 shown in FIG. 1 is moved to the offset working position, and the working unit 20 is rotated so that the working direction axis O2 of the working unit 20 is parallel to the traveling direction A of the traveling machine body 90. At this time, the shaft portion 30 of the pretreatment rotor 21 is installed in a state in which the shaft portion 30 is directed obliquely with respect to the traveling direction A of the traveling machine body 90 as described above. In this state, when the traveling machine body 90 moves forward, and the padding work machine 1 is driven and the pretreatment rotor 21 rotates, the tilling claw 60a for cutting moves the side of the old paddle K as shown in FIG. While cutting, the paddy field at the time of the old paddle K is dug up, and the tilling claws 60b for repelling lift the soil up to the old paddle K to fill the ground. And the soil where the trimming part 70 shown in FIG. 1 was piled is apply | coated on the cut old iron, and a new rice cake is formed.

  Here, when the rotating tilling claw 60 comes into contact with a stone, an obstacle, or the like, a large impact load acts on the tilling claw 60, the shaft portion 30 or the like, and there is a possibility that they are damaged. However, when the impact load acts on the shear bolt 80 as a shearing force exceeding a predetermined value, the shear bolt 80 is actively broken to block transmission of a large impact load to the tilling claw 60, the shaft portion 30, and the like. For this reason, it is possible to prevent the pretreatment rotor 21 and the drive system such as the gear and the chain from being damaged.

  Further, due to the breaking of the shear bolt 80, the cylinder shaft 41 becomes free with respect to the intermediate cylinder shaft 31. The cylinder shaft 41 receives the earth pressure from the field due to the advancement of the pretreatment rotor 21 in the arrow B direction, and moves to the rear side in the movement direction (arrow C direction) with respect to the intermediate cylinder shaft 31. Move to the indicated position. As a result, a gap is formed between the mounting surface 59 b of the flange 43 of the cylindrical shaft 41 and the mounting surface 32 b of the flange 32 of the intermediate cylindrical shaft 31. For this reason, the flange 32 of the rotating intermediate cylinder shaft 31 does not come into contact with the flange 43 of the cylinder shaft 41, so that the mounting surfaces 32b and 43b of the flanges 32 and 43 and the broken shear bolt 80 are seized. Can be prevented.

  Further, when the cylindrical shaft 41 becomes free with respect to the intermediate cylindrical shaft 31 due to the breaking of the shear bolt 80, the pretreatment rotor 21 is stopped. For this reason, the operator can easily notice that the shear bolt 80 is broken, and can accurately determine the interruption of the wrinkling operation. As a result, it is possible to suppress the situation where the smearing operation is continued in a state where the pretreatment rotor 21 is stopped. Expansion can be prevented in advance.

  In the above-described embodiment, the pre-treatment rotor 21 of the padding work machine 1 has been described as an example of the tilling rotor. The same effect can be obtained by carrying out similarly to the pretreatment rotor.

  Further, the pretreatment rotor 21 may be attached to a rotation shaft that protrudes from the pretreatment power transmission case 11 to one side and a rotation shaft that protrudes from the pretreatment power transmission case 11 to the other side. In this case, when the working unit 20 is installed with the working direction axis O2 of the working unit 20 shown in FIG. 1 extending in parallel in the front-rear direction, these rotational axes are parallel or oblique to the traveling direction A of the traveling machine body 90. Configure to face the direction. Then, when the rotary shafts projecting to the one side and the other side are subjected to earth pressure from the agricultural field as they progress, the pretreatment rotor 21 moves so that the flange of the cylinder shaft moves away from the flange of the intermediate cylinder shaft. Wear. By configuring in this way, it is possible to obtain the same effect as that of the above-described embodiment.

The top view of the glazing work machine provided with the pretreatment rotor concerning one embodiment of the present invention is shown. A side view of this glazing machine is shown. Sectional drawing of the pre-processing rotor mounted in this drape coater is shown. Sectional drawing of the axial part of a pre-processing rotor is shown, The figure (a) is sectional drawing of a cylinder axis | shaft, The figure (b) is sectional drawing of an intermediate | middle cylinder axis | shaft. Sectional drawing of the pre-processing rotor for demonstrating the action | operation of a pre-processing rotor is shown.

Explanation of symbols

1 Sprinkle coating machine (agricultural machine)
11 Pre-processing power transmission case (transmission case)
12 Rotating shaft 21 Pretreatment rotor (cultivation rotor)
31 Intermediate tube shaft 32, 43 Flange 41 Tube shaft 80 Shear bolt

Claims (4)

  An intermediate tube shaft extending in the same direction as the rotation shaft is externally fitted to the rotation shaft supported by projecting from the transmission case so that torque can be transmitted, and a cylinder shaft for attaching a tilling nail is externally fitted to the intermediate tube shaft, A tilling rotor of an agricultural machine characterized in that a flange provided on an intermediate cylinder shaft and a flange provided on the cylinder shaft for attaching the tilling claw are connected and fixed by shear pins or shear bolts.   The flange of the cylinder shaft for attaching the tillage claw is disposed on the rear side in the traveling direction with respect to the flange of the intermediate cylinder shaft, and is connected and fixed to the flange of the intermediate cylinder shaft by the shear pin or the shear bolt. The tilling rotor of the agricultural working machine according to claim 1.   The agricultural work according to claim 1 or 2, wherein the cylinder shaft for mounting the tillage nail is externally fitted so as to be movable rearward in the traveling direction along the intermediate cylinder shaft after breaking the shear pin or the shear bolt. The tiller rotor of the machine.   The tilling rotor of the agricultural working machine according to any one of claims 1 to 3, wherein the agricultural working machine is a straw coating working machine that continuously forms straws in a field or the like.

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