JPH04117210A - Cutting blade of combine or the like - Google Patents

Abstract

PURPOSE:To stabilize arrangement and installation of respective cutter fingers by engaging installation parts of the cutter fingers with installation grooves in the transverse direction and supporting the cutter fingers so as to be nipped from the top and bottom. CONSTITUTION:Guide bars 1 and 2 are superposed in a cross-sectional shape of GAMMA and installation grooves 5 are formed between parts in the transverse direction of both. Many cutter fingers 3 are fixed by engaging installation parts along the aforementioned installation grooves 5, inserting and fixing installing pins 8 over pin holes 6 formed in the guide bars 1 and 2 and pin holes 7 formed in the cutter fingers 3. Thereby, the installation parts 4 of the cutter fingers 3 are engaged with the installation grooves 5 between the parts in the transverse direction though the construction of the guide bars 1 and 2 is simple. Since the cutter fingers 3 are supported so as to be nipped from the top and bottom, arrangement and installation of the respective cutter fingers 3 are stabilized.

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a cutting blade for a combine harvester, etc., and consists of a fixed blade that is fixed along a cutter bar and a movable blade that slides on the upper surface of the fixed blade. Can be used as a cutting blade in the form of a clipper.

(Prior Art and Problems to be Solved by the Invention) Pin holes 6 and 7 are formed along the length of the guide bars 1 and 2 to form the mounting portion 4 of the base of a paring force used for combine harvesters, binders, etc. The structure of a cutting blade for a combine harvester or the like is characterized in that a mounting pin 8 is inserted into and fixed to the blade.

(Function and Effect of the Invention) The tuffinger 3 has a mounting portion 4 fitted along the mounting groove 5, and a bottle hole 6 formed in these guide bars 1 and 2.
and the bottle hole 7 formed in the cutter finger 3,
Since the attachment pin 8 is inserted and the attachment part 4 of the fixed finger 3 is fitted and supported so as to be clamped from above and below, the arrangement and attachment of each cutter finger 3 is stable.

(Example) The interval between the upper and lower mounting grooves 5 formed between them is maintained. Arms 9 are integrally provided at both left and right ends of the guide bars 1 and 2 to protrude rearward, and each arm 9 has a mounting boss 12 that is fitted into a pair of mounting frames 11 and attached to the reaping frame 10. is fixed. Further, a cover 13 is superimposed on the upper surface of the guide bar 1 and is integrally formed by welding or the like. In addition, rectangular bottle holes 6 are formed in the cover 13 and the guide bar 1.degree. 2 at appropriate intervals in the longitudinal direction. Further, a transmission case 14 is provided at one end of the cover 13, and a transmission shaft 15 is interposed from above to interlock the movable blade 16 so as to reciprocate. 17 is a drive pin provided at one end of the movable blade 16. The movable blade 16 has a large number of triangular blade pieces 19 arranged and fixed to the cutter blade 18, and slides back and forth along the upper surface of the cutter finger 3.

The cutter finger 3 is formed in a 0-shape extending from the mounting portion 4 at the base to a portion of the fingers on both left and right sides.
It matches the pitch of 9. The mounting portion 4 is set to have a thickness that is just fit into the mounting groove 5, and has rectangular bottle holes 7 formed on both left and right sides so as to coincide with the bottle holes 7. or.

A vertical gap is formed in a part of the finger at the tip, in which a sliding blade piece 19 can intervene, and a receiving part 20 that connects a part of the left and right fingers and protrudes outward is formed in the front and rear middle part.
is provided to receive and slide the lower surface of the blade piece 19, and
Uke stops the intervention of the culm. Moreover, when each cutter finger 3 is fitted into the mounting groove 5 of the guide bars 1 and 2 and arranged, the receiving part 20 between the adjacent cutter fingers 3
are arranged so that they are close to each other or partially overlap one another above and below.

Reference numeral 21 denotes a blade holder, which prevents the movable blade 16 from floating upward, and is attached to the upper side of the cover 13 together with the guide bars 1, 2, etc. by means of a mounting pin 8. This blade holder 21 is formed with bottle holes 22 having the same spacing as the bottle holes 6.

The mounting pin 8 has a square cross section similar to each bottle hole 6, 7, and has a screw formed at its lower end into which a tightening nut 23 is screwed. The mounting pin 8 for fixing the blade holder 21 has a slightly larger angular cross section that can be fitted into the pin hole 22, and is set longer with a step 24.

The cutting blade device 25 consisting of the cutter finger 3, movable blade 16, etc. as described above is used as a two-stage cutting blade as shown in FIGS. 4 and 5. The combine has a threshing device 28 mounted on a car body 27 in the form of a crawler 26, and in front of the threshing device 28 is provided a reaping device 29 in a full culm input mode, a conveyance device 30, etc., and is raised and lowered by a lift cylinder 31 that is extendable and retractable by hydraulic pressure.

The reaping device 29 is provided with a reel 33 for scraping the seeds of the culm rearward between the weed splitting devices 32 at both left and right ends, a clipper-shaped cutting blade device 34 is provided at the bottom, and a reaping device 34 is provided at the bottom of the reaping device 33 for removing the seed part of the culm. A collection device 3 that collects and sends the culms to the transportation device 30.
5 is set. 36 is the cabin that covers the control equipment, 37
is an auger that transports and discharges the husk from the grain tank after harvesting.

The cutting blade device 25 is provided at the rear lower part of the cutting blade device 34 and cuts the base of the culm after being cut by the cutting blade device 34. The mounting frame 11, which is vertically adjusted by the contraction of the cylinder 38, is guided at several points by guide bosses 39 integrated with the reaping frame 10 so as to be vertically slidable. 40 is a transmission case on the side of the reaping frame 10;
The movable blade 16 is reciprocally driven by a telescopic transmission shaft 15 from O.

During the reaping operation, when the tips of the culms that are scraped by the rotation of the reel 33 are harvested by the cutting blade device 34, the collecting device 35. The grain is supplied to the threshing device 28 via the conveying device 30 and the like, and is subjected to threshing processing.

The remaining culm from which the tip of the ear has been cut is removed by the cutting blade device 25 at the rear.
It is harvested from the base of the stock and placed on the side on the running ground.

In this cutting blade device 25, when the drive pin 17 is reciprocated from the transmission shaft 15 to the left and right, the movable blade 16 is reciprocated and slides along the upper surface of each cutter finger 3. The culm guided in between is cut with 19 blade pieces. The cut culm is guided to the rear side through the upper surface of the cover 13, the blade holder 21, etc. on the rear side of the movable blade 16, and is dropped.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; FIG. 1 is an exploded plan view showing a partially cutaway left and right side view, FIG. 2 is an assembled plan view showing a partially side view, and FIG. 3 is a -( Explanation of symbols) 1 Guide bar 3 Cutter finger 5 Mounting groove 7 Pin hole guide bar mounting part Pin hole mounting pin

Claims (1)

[Claims] A pair of upper and lower guide bars 1 and 2 are formed into a cross-sectional shape in the horizontal and vertical directions, and a mounting portion 4 of the base of the cutter finger 3 is installed between the upper and lower horizontal portions of each guide bar 1 and 2. , 2 are formed to fit and align in the longitudinal direction of the cutter fingers 3, and the mounting pins 8 are inserted into pin holes 6 and 7 formed across each of these horizontal parts and the mounting part 4 of each cutter finger 3. A cutting blade for a combine harvester, etc., which is characterized by being fixed in place.