JPH0228642Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial field of application This invention is used in the technical field of rotary tilling devices in tillers.

Prior art A flat material is formed to have a symmetrical arched edge with a wide base and a narrow top with respect to its center line, a blade edge is formed on the arched edge, and the upper part is curved in one direction. While curving to along the line,
A crank-shaped attachment part is provided, and this attachment part is attached to a claw holder attached to a flange disk provided at the shaft end of the tilling shaft, so that the base end is positioned outward from the outer surface of the flange disk. are doing.

Problems that the invention aims to solve: Conventional forward/reverse tilling claws attached to the flange disc provided at the end of the tilling shaft were constructed as described above, so the crank-shaped attachment part, the outer periphery of the flange disc, and the base of the forward/reverse tilling claws were There was a problem in that grass straw became entangled between the edges and increased resistance to tilling.

Technical means for solving the problems This invention takes the following technical means to solve the above problems.

A flat material is formed to have a symmetrical arched edge such that the base is wide and the top is narrow relative to its center line, a blade edge is formed on the arched edge, and the upper part is curved to one side. At the same time, the back surface is pressed along the center line to the curved side to form a ridge-like raised part, and the base part is provided at the end of the tilling shaft from the outside of the flange disc. At the same time, the base end was bent along the inside of the flange disk, and a mounting portion for attaching to the claw holder of the tilling shaft was provided on the curved side of the base along the center line.

Function: When the tilling shaft is rotated in the normal direction, the forward and reverse tilling claws rotate counterclockwise when viewed from the left side, and one blade edge cuts into the soil in front of the flange disk, greatly scraping the soil vertically and horizontally, and removing large soil clods. The flange disk is released from below to the rear, and the soil is roughened and tilled together with other forward and reverse tilling claws provided in the middle of the tilling shaft. Next, when the tilling shaft is reversed, the forward/reverse tilling claw rotates clockwise when viewed from the left side, and the other blade edge rotates from the tilled field side to the underside of the flange disk, cutting into the lower layer of the soil. The fine tilled soil is scraped vertically and horizontally from the bottom to the top of the flange disk, and the fine tilled soil is carried between the rotary cover and the tilling shaft and thrown backwards to perform fine tilling.

Effect A slope is formed from the outside of the flange disk whose base is provided at the end of the tilling shaft so as to cover part of the outer periphery of the flange disk, and the base end is bent along the inside of the flange disk. There is a mounting part on the curved side that attaches to the claw holder of the tilling shaft along the center line and along the slope, so that when tilling, grass straw that gets tangled with the forward/reverse tilling claws will not get tangled with the mounting part and the claw holder. do not have.

Embodiment One embodiment of this invention will be described below based on the drawings.

First, the configuration will be explained. A side-drive rotary tiller 4 is connected to the rear of a body 1 of an agricultural tractor via a three-point link mechanism 2 and a universal joint 3 so as to be able to move up and down and transmit power. This rotary tilling device 4 includes a central transmission case 7 in which input shafts 5 and 6 which are selectively connected to a universal joint 3 are protruded back and forth, and a side transmission case on the left side of the central transmission case 7 via a support tube 8. 9 is installed so that power can be transmitted, and a side support plate 11 is installed on the right side via a support tube 10.
A drive shaft 13 with a flange disk 12 is provided on the inner side of the lower part of the side transmission case 9, and a support shaft 15 with a flange disk 14 is provided on the inner side of the lower part of the side support plate 11. Between 12 and 14, flange disks 17 and 17 with tilling shafts 16 provided at both ends are attached to the flange disks 12 and 14 by tightening them with bolts and nuts 18, 18, and the central transmission case 7, side transmission case 9, and side Support plate 11 and tillage shaft 16
etc. are configured to be integrated with the rotary cover 19 and rotate about a vertical axis with respect to the frame side consisting of the mast 20, the tail wheel support part 21, etc., and can be switched left and right. The side claw holders 22, 22 provided on the tilling shaft 16 have side forward/reverse tilling claws 23,
23, intermediate forward/reverse tilling claws 25, 25... are attached to the intermediate claw holders 24, 24.... The side forward/reverse tilling claws 23, 23 have a base end 27 wide with respect to the center line 26 and a top part 28.
The arc edges 29 and 30 are symmetrical so that the width is narrow, and the blade edges 32 and 33 are formed between the top 28 and the base 31 of the arc edges 29 and 30, and the upper part 34 is turned inward. While curving, the back surface is pressed toward the curved side along the center line 26 to form a ridge-like protuberance 35, and the base 31 is moved from the outer periphery of the flange disks 12, 14 to the flange disks 17, 1.
At the same time, the proximal end 27 is bent so as to overlap with the inside of the flange disk 17, and the side claw holder 22 of the flange disk 17 is placed in the center of the proximal end 27.
A notch 36 is provided in which the base portion 31 is fitted, and a mounting portion 37 is provided along the center line 26 of the base portion 31 and fitted into the side claw holder 22 formed in accordance with the bending thereof.

Next, the effect will be explained. When roughly tilling a field, use the rotary tiller 4 with the universal joint 3 connected to the input shaft 5.
The aircraft 1 travels by driving the . The tilling shaft 16 is rotated counterclockwise in left side view, and the side forward/reverse tilling claws 23, 23 are the intermediate forward/reverse tilling claws 25, 2.
5 rotates in the durn cut direction with... and cuts into the soil in front of the flange disks 12, 17, 14, 17 from the blade edges 32, 32 to scrape the soil vertically and horizontally and remove large tilled soil lumps from the flange disks 12, 17, 17,
14, 17 from below to the rear, allowing for rough tilling in which fine tilled soil is distributed in the lower layer and large clods of tilled soil are distributed in the upper layer. In addition, when tilling fine soil with the premise of creating ridges, the central transmission case 7, side transmission case 9, side support plate 11, tilling shaft 16, and rotary cover 19 are rotated together around the vertical axis. When the machine body 1 is run with the input shaft 6 connected to the universal joint 3 and the rotary tilling device 4 is driven, the tilling shaft 16 rotates clockwise in the left side view and performs side forward and reverse tilling. The claws 23, 23, together with the intermediate forward/reverse tilling claws 25, 25..., cut into the lower side of the soil from the rear of the flange disks 12, 17, 14, 17 from the blade edges 33, 33 to scrape the soil vertically and horizontally. 12, 17, 14, and 17, the tilled soil is picked up in the upper front side and thrown around to the rear along the rotary cover 19, and the tilled soil in relatively large clods is in the lower layer and the fine tilled soil in the upper layer. It is cultivated on fine soil with a distribution of

In this embodiment, the side forward/reverse tilling claws 23 are provided so that the mounting portion 37 runs along the bent base 31, and the side claw holder 22 is fitted into a notch 36 provided on the base end side. Therefore, the grass straw caught on the side forward/reverse tilling claws 23 is released together with the tilled soil along the blade edges 32 and 33 without getting entangled with the mounting part 37 and the side claw holder 22, and the grass straw caught on the side forward/reverse tilling claws 23 is released together with the tilled soil along the blade edges 32 and 33, and the grass straw is not tangled with the mounting part 37 or the side claw holder 22, and is thrown away together with the tilled soil. It is possible to prevent an increase in tillage resistance due to grass straw getting entangled in the holder.

[Brief explanation of the drawing]

The drawings show one of the embodiments of this invention, and Fig. 1 is a perspective view of the main parts, Fig. 2 is a side view, Fig. 3 is an overall side view, Fig. 4 is an overall rear view, and Fig. 5 is an overall view. FIG. 2 is a perspective view showing a prior art. The main part is the explanation of the symbols, 1...the fuselage, 4...the rotary tilling device, 5, 6...the input shaft, 12, 14, 1
7... Flange disk, 16... Tilling shaft, 22
...Side claw holder, 23...Side forward/reverse tilling claw, 26...Center line, 27...Base end, 28...
Top, 29, 30... Arc edge, 31... Base, 3
2, 33...blade edge, 34...upper part, 35...raised part, 36...notch part, 37...attachment part.

Claims (1)

[Scope of utility model registration request] A flat material is formed to have a symmetrical arched edge with a wider base and narrower top with respect to its center line, a blade edge is formed on the arched edge, and the upper part is curved to one side. At the same time, the back surface is pressed along the center line to the curved side to form a ridge-shaped raised part, and a part of the outer periphery of the flange disc is covered from the outside of the flange disc whose base is provided at the end of the tilling shaft. The method is characterized by forming a curved slope, bending the base end along the inside of the flange disk, and providing a mounting part on the curved side of the base for attaching to the pawl holder of the tilling shaft along the center line. Forward and reverse cultivation claws.