JP2015208305A - Tilling machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tilling machine that can sufficiently secure the strength of mounting parts of tilling claws, is durable and has a tilling claw mounting structure for facilitating the work of mounting and dismounting the tilling claws.SOLUTION: A tilling machine is characterized as follows: claw mounting holders 61 each are constituted of a holder member 610 with a release part facing the right and left sides and having the U-shaped cross section, and a holder side plate 611 for forming a fitting insertion hole of the rectangular cross-section capable of fitting a mounting base of tilling claws 62 arranged oppositely to the U-shaped bottom face of the holder member 610; the holder side plate 611 is shaped in a single plate provided at the position assuming a center of a rotating shaft 60 as the point symmetry in side view, and is also used as the holder side plate 611 of the other claw mounting holder 61; and the tilling claws 62 each are fixed by the bottom face of the U-shaped cross section of the holder member 610 and a fastening material 614 inserted in one mounting hole penetrated through the holder side plate 611 in parallel with the rotating shaft 60.

Description

  The present invention relates to a farming machine that is used by being mounted on a tractor, and relates to a cultivation rotary that cultivates a farm field with a cultivation body having a rotating shaft that is attached with a plurality of cultivation claws arranged radially in the axial direction. Specifically, the present invention relates to a structure of a portion where a tilling claw is attached to a rotation shaft of a tilling body of a tilling rotor.

  Conventionally, as a structure for attaching a tilling claw to a rotation shaft of a tilling body of a tilling rotary tilling a farm field, a “cultivation claw holder” in Japanese Patent Laid-Open No. 2003-284402 or a “farming machine” in Japanese Patent Laid-Open No. 2012-143219 The mounting structure shown in FIG.

JP 2003-284402 A JP2012-143219A

  The attachment of the tilling claws described in Patent Document 1 is provided by welding the tilling claw holders 1 and 20 to the tilling shafts 2 and 21, respectively, for each of the tilling claws 4 and 23. It is attached by fastening. In this structure, since the bolts and nuts 3 and 22 are fastened in one place, the attachment and removal of the tilling claws 4 and 23 can be easily performed. Since the weld length to 2 and 21 is not sufficient, there is a problem that the structure is disadvantageous in strength.

  Further, the attachment of the tilling claws described in Patent Document 2 has a structure in which a plurality of tilling claws are attached to a single flange 30 welded to the rotary shaft 21, and two places provided for each of the tilling claws. Bolts are inserted into the fastening holes and attached. One flange 30 welded to the rotating shaft 21 can be welded to the outer periphery of the rotating shaft 21 so that it can have a durable structure. However, the fastening claws are fastened at two or more locations. Part is necessary, and there is a problem that the work of attaching and removing the tilling claw cannot be easily performed.

  The present invention aims to solve such problems, and it is possible to sufficiently secure the strength of the attachment portion of the tilling nail, which is durable, and in which the attachment and removal work of the tilling nail is easy. An object of the present invention is to provide a tillage working machine having a claw mounting structure.

  In order to solve the above-mentioned problems, a machine body, a tiller body in which a large number of tillage claws are radially provided on a rotating shaft in a horizontal direction perpendicular to the advancing direction of the machine body, and a leveling body that performs leveling work behind the tiller body The tiller body includes a rotating shaft rotatably provided on the body, and a claw attachment holder that protrudes from an outer periphery of the rotating shaft and radially attaches a plurality of tilling claws in the axial direction. And a tilling claw to be attached to the claw attachment holder, the claw attachment holder being disposed opposite to the U-shaped holder member having a U-shaped cross section with the release portion facing left and right sides, and the U-shaped bottom surface of the holder member It is composed of a holder side plate that forms an insertion hole with a rectangular cross section into which the tillage claw mounting base can be inserted, and the holder side plate is provided in a position that is point-symmetric with respect to the rotation axis center in a side view. A single unit that also serves as the holder side plate of the claw mounting holder The tilling claw is fixed by a fastening material that is inserted into one mounting hole that passes through the bottom surface of the U-shaped cross section of the holder member and the holder side plate in parallel with the rotating shaft. Propose work implements.

  With the tillage claw attachment structure of the present invention, it is possible to provide a tillage working machine that can sufficiently secure the strength of the attachment portion of the tillage claw and can easily attach and remove the tillage claw.

It is a side view of the tillage working machine of the Example of this invention. It is the top view which carried out the cross section for demonstrating the drive part of the tillage working machine of the Example of this invention. It is the principal part side view which carried out the cross section of the tillage body of the Example of this invention. It is the top view which carried out the partial cross section of the cultivation body of the Example of this invention. It is sectional drawing of the state in which the tilling nail attachment base of the present invention was inserted in the fitting insertion hole of the holder.

  An embodiment will be described based on an example shown in the drawings. FIG. 1 is a side view from the left side of a working direction of a tilling work machine according to an embodiment of the present invention, FIG. 2 is a cross-sectional plan view for explaining a drive unit of the tilling work machine according to an embodiment of the present invention, and FIG. Fig. 4 is a side view of the rotary body of the embodiment of the present invention in section, Fig. 4 is a plan view of a portion of the tiller body of the embodiment of the present invention, Fig. 5 is a holder of the tillage claw mounting base of the present invention. It is sectional drawing of the state inserted in the insertion hole. A three-point link mechanism, which is a lifting link, is provided at the rear of a tractor (not shown) that is a traveling work vehicle, and is connected to the mounting portion 3 at the front of the tilling work machine A. They are freely connected and driven by power output from the tractor side.

  The mounting portion 3 is provided at the front left and right center portion of the tillage work machine A, and includes a top link pin 31 at the upper center and a pair of lower link pins 30 positioned at the lower left and right thereof. A point link mechanism (not shown) is connected to a top link and a lower link, and is attached to a tractor.

  An input case 1 is provided at the center of the front mounting portion 3, and an input shaft 10 projects from the front. The input shaft 10 is connected to an output shaft (not shown) of the tractor through a universal joint or the like, and receives power from the tractor.

  A pipe frame 20 configured by a round pipe is provided so as to protrude integrally from the input case 1 to the left and right sides, and downward from the protruding end of the pipe frame 20 on one of the left and right sides (left side in FIG. 2). The airframe 2 is constituted by the extended vertical transmission case 5 and the vertical support frame 21 extending downward from the protruding end of the pipe frame 20 on the other side of the left and right sides. The rotary shaft 60 is rotatably supported between the lower end of the transmission case 5 and the lower end of the support frame 21.

  A large number of tilling claws 62 are attached to the rotary shaft 60 at regular intervals in the radial direction to constitute the tilling body 6. The upper part of the tillage body 6 is covered with the rotor cover 63, and the rear part is located at the rear end part of the rotor cover 63 and the leveling body 4 whose front end part is connected to be rotatable in the vertical direction. The scattering of the cultivated soil is received and the leveling is performed by the rear rotating end of the leveling body 4. The leveling body 4 is urged in a rotating direction by a spring provided on a rod 40 that is bridged and connected between the upper surface side of the leveling body 4 and the machine body 2 side.

  The power input from the input shaft 10 of the input case 1 is decelerated by the gear 12 built in the input case 1 and passes through a pipe frame 20 (left side in FIG. 2) protruding from the left and right sides. It is transmitted into the transmission case 5 by the output shaft 11. An output sprocket 50 is fixed to the end of the output shaft 11 in the transmission case 5, and a rotary shaft sprocket 52 is fixed to the end of the rotary shaft 60 supported by the lower end of the transmission case 5. Power is transmitted by the roller chain 51 thus made, and the rotary shaft 60 is rotationally driven.

  The support portion of the rotating shaft 60 on the transmission case 5 side is rotatably supported by a bearing and is lubricated by lubricating oil stored in the transmission case 5. An oil supply port (not shown) is provided in the upper part of the transmission case 5, and the roller chain 51 and the bearing are lubricated by the supplied lubricating oil.

  As shown in FIG. 2, the support portion on the support frame 21 side of the rotary shaft 60 is rotatable by a bearing 70 held on the support frame 21 via a bearing retainer 71 attached to the support frame 21 with bolts and nuts. It is supported.

  The attachment part of the tilling claw 62 of the tilling body 6 will be described with reference to FIGS. A holder side plate 611 having a surface in a direction perpendicular to the axial direction is fixed to the rotary shaft 60 by a plurality of welds at regular intervals in the axial direction. The holder side plate 611 has an oval shape when viewed from the axial direction of the rotating shaft 60, and the rotating shaft 60 passes through the center portion and is welded. Further, on the oval surface of the holder side plate 611, two claw mounting holders 61 for holding the tilling claw 62 are provided at positions that are point-symmetric with respect to the center of the rotation shaft 60. The claw mounting holder 61 is formed by welding a holder member 610 having a U-shaped cross section with a release portion facing in a direction parallel to the right and left rotation shafts to the holder side plate 611. The mounting base of the tilling claw 62 is fitted into the fitting insertion hole 612 having a rectangular cross section formed by the U-shaped bottom surface of the holder member 610 and the holder side plate 611 arranged so as to be opposed thereto, and the tilling claw 62 is attached. The insertion hole 612 is provided in a direction in which the cultivating claw 62 base is inserted at an angle retracted with respect to the rotation direction of the rotation shaft 60.

  The mounting hole of the tilling claw 62 inserted into the fitting insertion hole 612 is superposed on one mounting hole 613 penetrating the holder member 610 in a U-shaped cross section and the holder side plate 611 in parallel with the rotation shaft 60. The tilling claw 62 is attached by the inserted fastening material 614. The fastening material 614 includes a bolt and a nut in this example. The holder member 610 side of the mounting hole 613 is molded into a hexagonal shape that can fit the hexagonal head of the bolt that is the fastening material 614. When the bolt is inserted from the holder member 610 side, the head is fitted and the bolt It is a detent. When a nut is screwed into a bolt protruding on the surface of the holder side plate 611 opposite to the holder member 610 and tightened, the tilling claw 62 is brought into close contact with the holder side plate 611 and fixed. The tilling claws 62 are attached to the bolts and nuts at one place, so that the tilling claws 62 can be easily replaced, and the holder side plate 611 and the holder member 610 are sufficiently welded to the rotating shaft 60. Therefore, the strength of the mounting portion of the tilling claw 62 can be sufficiently secured, and a durable tilling work machine can be provided.

  The holder side plate 611 is fixed by a plurality of weldings at regular intervals in the axial direction of the rotating shaft 60, and is welded at different angles so that the side view tilling claws 62 are radial.

  Next, in order to perform the tilling work by the tiller working machine A of the present invention, the three-point link mechanism of the tractor which is a traveling machine is connected by the lower link pin 30 and the top link pin 31 of the mounting portion 3 and the three points of the tractor are connected. The link mechanism can be moved up and down. Further, the input shaft 10 is connected to the output shaft of the tractor and a universal joint, etc., so that power can be input.

  When the tractor is operated to rotate the cultivator 6 to lower the three-point link mechanism in the cultivated field, the soil is cultivated by the cultivating claws 62 of the cultivator 6. When the tractor is run in this state, the field can be cultivated sequentially. Moreover, the leveling body 4 is located in the rear part of the tilled body 6, and work is performed while leveling the cultivated soil surface layer.

  The claw mounting holder 61 of the tillage body 6 has a holder side plate 611 having an oval shape and the center portion is welded with the rotary shaft 60 penetrating, and the oval surface of the holder side plate 611 is centered on the rotary shaft 60. The claw mounting holders 61 are provided at two positions symmetrical with respect to each other, and the two claw mounting holders 61 are configured to be used as a single holder side plate 611, and are strong enough to receive the resistance from tillage. This is a structure that sufficiently secures. The holder side plate 611 is fixed by a plurality of weldings in the axial direction of the rotating shaft 60 at a predetermined interval, and is welded by changing the phase so that the side-view tilling claws 62 are radially arranged. Occurrence of vibration due to the is reduced and work can be done comfortably.

  When exchanging the tilling claw 62 worn by the tilling work, the claw can be exchanged only by removing the fastening material 614 at one place of the claw mounting holder 61, so that the exchanging work can be performed efficiently.

  The present invention can be applied to a tilling work machine that has a tilling body having a plurality of tilling claws attached to a rotating shaft and is mounted behind a traveling machine such as a tractor and performs a tilling work with the tilling body.

DESCRIPTION OF SYMBOLS 1 Input case 10 Input shaft 11 Output shaft 12 Gear 2 Machine body 20 Pipe frame 21 Support frame 3 Mounting part 30 Lower link pin 31 Top link pin 4 Leveling body 40 Rod 5 Transmission case 50 Output sprocket 51 Roller chain 52 Rotary shaft sprocket 6 Plowing Body 60 Rotating shaft 61 Claw mounting holder 610 Holder member 611 Holder side plate 612 Insertion hole 613 Mounting hole 614 Fastening material (bolt / nut)
62 Tillage Claw 63 Rotor Cover 7 Bearing 70 Bearing 71 Bearing Retainer A Tillage Working Machine

Claims (1)

In a cultivating work machine comprising: a body, a cultivating body provided with a plurality of cultivating claws radially on a rotating shaft in a horizontal direction perpendicular to the traveling direction of the body, and a leveling body that performs leveling work behind the cultivating body ,
The tillage body is attached to the rotary shaft provided rotatably on the machine body, a claw mounting holder that protrudes from the outer periphery of the rotary shaft and radially attaches a plurality of tilling claws in the axial direction, and the claw mounting holder. The claw attachment holder has a tiller claw attachment base by disposing the claw attachment holder so as to face the U-shaped cross-section of the holder member facing the left and right sides and the U-shaped bottom surface of the holder member. It is composed of a holder side plate that forms an insertion hole with a rectangular section that can be inserted, and the holder side plate also serves as a holder side plate of another claw mounting holder provided at a position that is point-symmetric with respect to the rotation axis center in side view. The tilling claw is fixed by a fastening material that is inserted into a single plate-shaped bottom member having a U-shaped cross section of the holder member and a mounting hole that passes through the holder side plate in parallel with the rotation shaft. Tillage work machine.