JPS6151091B2 - - Google Patents

Description

[Detailed Description of the Invention] This invention is a method of fixing an excavator to the lower end of a knife that is attached to the rear of a traveling vehicle body such as a tractor and buried so as to hang down below the soil surface, and has a leading edge as a cutting edge. This invention relates to a swinging subsoiler that forms a cavity under the soil surface by appropriately swinging a lever knife back and forth.

With this type of subsoiler, foreign matter such as straw and weeds scattered on the field gets caught in the front part of the knife, making it difficult to cut reliably, so it is often necessary to stop the operation and remove the caught foreign matter. There were flaws. For this reason, conventionally there was a swinging rod that operated integrally with the knife to sweep away the foreign matter present on the front side of the knife, but this type of rod was installed at the front part far away from the knife. Since the swinging rod was provided hanging down at the position, the swinging rod also caught foreign matter, and there was a drawback that these foreign matter could not be removed accurately.

Therefore, the present invention has taken the following technical means for the purpose of eliminating the above-mentioned drawbacks.

That is, a knife is pivotally mounted on a machine frame connected to the rear of the traveling vehicle body so as to hang below the soil surface, and an excavator is fixed to the lower end of this knife, and an appropriate eccentric cam mechanism is attached to the lower end of the knife. The knife is configured to swing back and forth at the front side of the knife, and a bar-shaped contaminant removal rod is provided on the front side of the knife with its tip end hanging downward. Providing it close to the front edge and with its lower end looking into the soil,
The structure of the oscillating subsoiler is characterized in that the dirt removal rod is oscillated back and forth by the eccentric cam mechanism about a pivot located above the oscillating pivot of the knife.

This invention will be described in detail based on an embodiment shown in the drawings. Reference numeral 1 denotes a machine frame, which has a hitch 2 attached to the top link and lower link of the tractor at its front end, and a tail wheel 3 detachably attached to its rear end. 4 is a beam member that strengthens the machine frame and the hitch.

Reference numeral 5 denotes an input shaft which is rotated by conduction from the PTO shaft of the tractor, and is mounted on the machine frame 1 so as to be rotatable back and forth, its tip is formed into a spline, and the eccentric cam 6 is integrally fixed to the rear end. ing.

7 is a knife that is long in the vertical direction and hangs down so as to reach deep below the soil surface. A rotating frame 9 is fixed to the upper part of the knife, and this rotating frame 9 is pivoted to the machine frame 1 8 to move the knife 7 back and forth. The knife 7 is swingable and has a cutting edge 10 on its front edge, and a digging body 11 for digging soil is fixed to the lower end of the knife 7. 12 is the excavation body 11
This is a cavity forming machine connected to the rear of the machine.

A spring 13 is interposed between the rotating frame 9 and an arm 14 provided on the machine frame 1 at the rear side of the rotating frame 9, and urges the rotating frame 9 forward. It is something. Reference numeral 15 denotes a crank, whose intermediate bent portion is pivoted 16 to the machine frame at a position higher than the pivot portion 8 of the rotating frame 9, and a cam follower 17 in contact with the eccentric cam 6 is attached to the front end of the crank. At the end is the rotating frame 9.
A roller 18 is fixedly attached thereto to receive the front elastic force, and the rotation frame 9 is configured to swing back and forth via the crank 15 by the rotation of the eccentric cam 6. In this embodiment, the eccentric cam 6, crank 15, cam follower 17, and roller 18 constitute an eccentric cam mechanism. Reference numeral 19 denotes a dirt removal rod, the base of which is fixed to the front side of the pivot portion 16 of the crank 15, and whose tip end is hung downward and extends into the soil at the front side of the side surface of the knife 7. The swinging pivot portion 16 is located above the swinging pivot portion 8 of the knife 7, and the swinging pivot portion 16 is placed above the swinging pivot portion 8 of the knife 7, so that the knife 7 is vibrated more than the back and forth amplitude received from the crank 15 via the rotating frame 9. , when the knife 7 is swung forward by the eccentric cam mechanism, the exclusion rod 19
The knife 7 vibrates so much that it moves away from the front end of the knife 7, and conversely, when it swings backward, the knife 7
The front end of the knife 7 is swung so that it is spaced further forward than the dirt removal rod 19, so that the knife 7 and the dirt removal rod 19 alternately come into contact with the dirt. Reference numeral 20 denotes a coulter, which is fixed to the machine frame 1 so as to be positioned in the same plane in front of the knife 7 and rolled, and is used to cut off foreign matter scattered on the soil surface in advance. It is provided so that the periphery is buried in a shallow area below the surface.

In the configuration of the above example, when the subsoiler configured as described above is attached to the tractor and the input shaft 5 is transmitted and rotated from the PTO shaft, the eccentric cam 6 that constitutes the eccentric cam mechanism vibrates the crank 15, and the roller of this crank 15 vibrates. 18 and spring 13 to swing the rotating frame 9 back and forth around the pivot 8, and the knife 7 fixed to the rotating frame 9 and the digging body 11 fixed to the lower part of the knife 7.
rock back and forth. Therefore, the excavator 11 advances while excavating the soil deep below the soil surface, and the cavity forming machine 12 at the rear creates a cylindrical hole. The work is done in this way, but the knife 7
If there is foreign material such as straw or weeds on the front soil surface, some of it will be cut off by the coulter 20, but the remaining material will float around on the soil surface. It remains.

At this time, the contaminant removal rod 19 is swung back and forth by an eccentric cam mechanism about a pivot 16 that is integrally fixed to the crank 15 and located above the pivot 8 of the knife 7. Therefore, the contaminant removal rod 19 is swung back and forth more than the knife 7 on the front and lateral sides of the knife 7, and as a result, the contaminant culm is alternately placed between the knife 7 and the expulsion rod 19. When they come into contact, they receive a lateral feed action,
The foreign objects are sequentially moved laterally outwardly away from the knife 7, thereby preventing them from being caught by the knife 7.

Since the present invention has the above-mentioned configuration, the knife and the exclusion rod can alternately abut against foreign matter such as straw and weeds scattered on the front side without unnecessarily increasing the amplitude of the excavation body of the subsoiler, and remove these foreign matter such as straw and weeds. Contaminants can be accurately removed laterally away from the knife, preventing them from getting tangled with the knife, and work efficiency is improved because there is no need to interrupt work to remove foreign substances that are caught in the knife, unlike in the past. It has effects that can be improved.

[Brief explanation of the drawing]

The drawings show one embodiment of the invention.
FIG. 1 is a side view, and FIG. 2 is a plan sectional view of the main parts. Explanation of symbols, 1...Machine frame, 5...Input shaft, 6...
...Eccentric cam, 7...Knife, 10...Blade edge, 11
...Drilling body, 15...Crank, 19...Contaminant removal rod.

Claims (1)

[Claims] 1. A knife is pivotally mounted on the machine frame connected to the rear of the traveling vehicle so as to hang below the soil surface, and the excavator is fixed to the lower end of this knife, and an appropriate eccentric cam mechanism is attached to the knife. The knife is configured to swing back and forth, and a bar-shaped contaminant removal rod is provided on the front lateral side of the knife with its tip end hanging downward, so that the knife can be moved forward and backward. approaching the edge,
and installed so that its lower end extends into the soil,
An oscillating subsoiler characterized in that the dirt removal rod is oscillated back and forth by the eccentric cam mechanism about a pivot located above the oscillating pivot of the knife.