JPH0889044A - Fitting structure for reaping blade in reaper - Google Patents

Abstract

PURPOSE: To provide the subject fitting structure for solving inconvenience of catching weed, straw, dust, etc., and having improved operation efficiency, by attaching a reaping blade bearer furnished with a reaping blade to the lower part of a reaping frame so as to freely adjust the vertical position of the bearer and projecting the lower end part of a supporting member lower than the reaping blade. CONSTITUTION: This fitting structure is made by vertically movably constituting a supporting plate 23 which is dropped from a longitudinal frame member 12b and temporarily supports a reaping blade bearer 16 so as to make the supporting plate follow the adjustment of the vertical position of the reaping blade bearer 16. In providing one of the reaping blade bearer 16 and the supporting plate 23 with an engaging hole 23a and the other with an engaging pin 25 which is meshed with the engaging hole 23a in a through state and temporarily holds the reaping blade bearer 16, the tip part of the engaging pin 25 is preferably furnished with a large diameter part for preventing removal of the engaging pin from the engaging hole 23a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting blade mounting structure for a harvester such as a combine harvester.

[0002]

BACKGROUND OF THE INVENTION Generally,
In this seed reaper, the cutting blade pedestal to which the cutting blade is attached is attached to the lower side of the cutting frame by using a screw or the like. However, the cutting frame is attached by a method such as interposing a collar on the screw. There is one that makes it possible to adjust the mounting height of the cutting blade. Then, when adjusting the mounting height, the cutting blade pedestal is to be attached and detached, but since the cutting blade pedestal is heavy, attachment and detachment work is not easy, especially when attaching to the mowing frame. However, since it is necessary to perform the alignment work and the screwing work in a state where the heavy cutting blade support is lifted, it is necessary to perform the work by at least two persons, which is inferior in efficiency. Therefore, it is proposed to provide a supporting member, in which a plurality of engaging portions are arranged side by side in the vertical direction, in a hanging shape on the cutting frame. In other words, by selectively setting the cutting blade cradle to one of the engaging parts,
It is possible to carry out the installation work while temporarily supporting it at the desired height, but with this one, when the cutting blade cradle is set to the upper engaging part, the lower end of the support member is more than the cutting blade. Since it protrudes downward, there is a risk that grass, straw, dust, etc. may be caught and interfere with the mowing work.

[0003]

SUMMARY OF THE INVENTION The present invention was devised with the object of providing a mounting structure for a cutting blade in a reaper capable of eliminating these drawbacks in view of the above circumstances. A cutting blade pedestal to which a cutting blade is attached is attached to a lower side of a mowing frame in a vertically adjustable manner, and the cutting blade pendant is suspended from the cutting frame to the cutting blade pedestal. In providing the supporting member for supporting, the supporting member is provided so as to be vertically movable with respect to the mowing frame. Further, according to the present invention, it is possible to eliminate the inconvenience that the lower end portion of the support member projects below the cutting blade and catches grass, straw, dust or the like.

[0004]

Next, an embodiment of the present invention will be described with reference to the drawings. In the drawings, 1 is a combine, and the combine 1 comprises a pretreatment unit 2 for cutting stems, a threshing selection unit 3 for threshing grains from the cut stems and selecting the threshed grains, A post-processing unit 4 for post-processing (discharging, cutting, bundling, etc.) of the threshed culm, a crawler-type running unit 5, an operation unit 6 in which various operating tools are arranged, and the like are provided. Both are conventional.

The pretreatment unit 2 divides the stem culms into a number of cutting lines, and divides the stalks introduced from between the dividers 7 arranged side by side at predetermined intervals at the front end of the machine body. A raising device 8 for raising, a cutting blade 9 for cutting the root of the stem for which the stem has been raised, a scraping device 10 located above the cutting blade 9 for scraping the stem, and a threshing selection unit 3 for cutting the cut stem. The cutting frame 12 to which the divider 7 and the cutting blade 9 are attached is a horizontal frame portion 12a facing the left-right direction and the horizontal frame. Part 12
A plurality of vertical frame portions 12b projecting forward from a are integrally formed, and a divider 7 is attached to the tip of each vertical frame portion 12b, while each vertical frame portion 12b is attached.
The cutting blade 9 is attached to the lower part of the middle part of the.

The cutting blade 9 is constructed by vertically stacking a pair of blade bodies 15 formed by connecting a number of knives 13 by a knife bar 14. The double blades 15 have a cutting blade cradle 1 having a width dimension substantially the same as that of the horizontal frame portion 12a.
It is attached to 6 so that it can reciprocate left and right, but each blade 15
The knife head 17 projecting from the rear portion is engaged with a pair of bell cranks 18 and 18a which are interlockingly coupled to each other, so that the piston rod 19 coupled to one of the bell cranks 18 can reciprocate forward and backward. Along with it, double-edged body 15
Move to the left and right in opposite directions to cut stems.

Reference numeral 20 denotes a screw for attaching the cutting blade support 16 to the lower side of each vertical frame portion 12b.
0 penetrates the cutting blade pedestal 16 from below and projects upward,
The cutting blade pedestal 16 is fixed to the lower side of each vertical frame portion 12b by screwing the protruding portion into the mounting bracket 21 welded to each vertical frame portion 12b. In the mounting state in which the collar 22 is interposed between the cutting blade pedestal 16 and the screw head, the cutting blade pedestal 16 is mounted in the lower position, while in the mounting state in which the collar 22 is interposed between the cutting blade pedestal 16 and the screw head, The cutting blade receiving stand 16 is attached to the upper position, and the attaching height of the cutting blade 9 can be adjusted in two steps in this manner.

Reference numeral 23 is a support plate which is attached to the vertical frame portions 12b at the left and right ends via the locking brackets 24. The support plate 23 hangs downward from the vertical frame portion 12b, but at the lower end portion thereof. Has an engagement hole 23a. On the other hand, engagement pins 25 projecting outward in the left and right directions are fixedly mounted on both left and right ends of the cutting blade receiving stand 16 via mounting plates 26, and the engagement pins 25 penetrate the engagement holes 23a. Cutting blade cradle 1
6 can be temporarily supported in a drooping posture as shown in FIG. That is, since the rear end portion of the cutting blade receiving base 16 is temporarily supported, the cutting blade receiving base 16 can be easily lifted, and the screw 20 can be matched with the screw hole position of the mounting bracket 21 only by lifting. However, since the large diameter portion 25a having a larger diameter than the base end side is formed at the tip end portion of the engagement pin 25, the engagement pin 25 is prevented from coming off due to the stopper action of the large diameter portion 25a. It is becoming regulated. In FIG. 7, A is the engagement hole 23a.
, B is the diameter of the large diameter portion 25a, C is the engagement pin 2
The diameter is 5, and each dimension has the following relationship. A>B> C

The locking brackets 24 are welded to the vertical frame portions 12b at the left and right ends, respectively.
On the inner side surface, a locking pin 24a that locks the upper end of the support plate 23 in a penetrating manner is provided so as to project inward. On the other hand, the upper end portion of the support plate 23 is formed with a locking hole 23b which can be fitted into the locking pin 24a, and the locking hole 23b has a predetermined size in the vertical direction (the collar 22).
Since it is formed into a long hole having a height dimension of approximately),
The vertical movement of the support plate 23 with respect to the vertical frame portion 12b is allowed. That is, the support plate 2
3 can move up and down within a range corresponding to the upper and lower mounting heights of the cutting blade receiving stand 16 described above. Therefore, when the cutting blade receiving stand 16 is adjusted up and down, the support plate 23 follows this.
Will also move up and down. That is, since the relative position (relative height) between the support plate 23 and the cutting blade pedestal 16 is kept substantially constant, even when the provisional cutting blade pedestal 16 is set on the upper side, the lower end portion of the support plate 23 is It is possible to prevent the cutting blade cradle 16 from largely protruding downward.

Further, 27 is an R pin attached to the locking pin 24a so as to prevent the support plate 23 from being pulled out, and the R pin 27 is attached to a mounting hole 24b formed in the locking pin 24a. However, since a predetermined interchange interval is secured between the R pin 27 and the support plate 23, the support plate 23 is allowed to swing to the left and right. That is, since it is possible to swing the support plate 23 to engage and disengage it from the engaging pin 25, it is possible to perform the attachment / detachment work without moving the cutting blade pedestal 16 which is a heavy item to the left and right. , The cutting blade cradle 16 even in the temporary support state
Bell cranks 18 and 18a to allow the left and right movement of the
It is possible to easily perform the engaging work with respect to. A bent piece 24c that bends inward is integrally formed on the rear edge of the locking bracket 24. The bent piece 24c contacts the rear edge of the locked support plate 23. For this purpose, the support plate 23 functions as a detent piece that restricts the front-back rotation of the support plate 23.

In the embodiment of the present invention constructed as described above, the support plate 23 that hangs from the vertical frame portion 12b to temporarily support the cutting blade receiving base 16 is vertically movable with respect to the vertical frame portion 12b. For this reason, the mounting height of the cutting blade pedestal 16 can be followed up or down. Therefore, the support plate 23 keeps the relative position of the cutting blade pedestal 16 substantially constant. Therefore, even when the provisional cutting blade pedestal 16 is set on the upper side, the lower end portion of the support plate 23 has the cutting blade pedestal 16. It is possible to avoid the inconvenience of projecting greatly downward from 16, and to eliminate the inconvenience of grass, straw, dust, etc. caught on the lower end of the support plate 23 as much as possible.

Moreover, since the vertical position of the support plate 23 automatically changes following the cutting blade receiving stand 16, there is no need to adjust the vertical position of the support plate 23, resulting in cutting. It is also possible to improve workability in height adjustment work, replacement work, and the like of the blade support 16.

The support plate 23 has an engaging hole 23.
Engagement pin 2 for temporarily supporting the cutting blade pedestal 16 by engaging the cutting hole pedestal 16 with the cutting hole pedestal 16 while penetrating the engagement hole 23a.
Since the engagement pin 25 is provided, there is no possibility that the engagement pin 25 will fall out of the engagement groove when the cutting blade support 16 is attached or detached, as in the case of engaging the engagement pin 25 with the hook-shaped engagement groove.

Further, at the tip of the engaging pin 25,
Since the large-diameter portion 25a is formed to prevent the engagement pin 23 from coming off from the engagement hole 23a, it is possible to prevent the inconvenience of the engagement pin 25 coming off when the cutting blade receiving base 16 is attached or detached, and to minimize the penetration allowance of the engagement pin 25. Since it can be suppressed, the support plate 23
The engagement operation of the engagement pin 25 with respect to can also be facilitated.

Furthermore, since the support plate 23 is swingably supported to the left and right, it is possible to swing the support plate 23 to engage and disengage the support pin 23. It is possible to perform the attaching and detaching work without moving the blade receiving base 16 to the left and right, and at the same time, allowing the lateral movement of the cutting blade receiving base 16 even in the temporary supporting state, the bell crank 18,
The engagement work with respect to 18a can also be facilitated.

The present invention is of course not limited to the above embodiment, and for example, the support plate 2 is used.
It is also possible to form the engagement hole 23a formed in No. 3 as a long hole that is long in the vertical direction. In this case, since the engaging and disengaging work of the engagement pin 25 becomes easy, the workability in the height adjustment work of the cutting blade receiving stand 16 and the replacement work can be further improved.

[0017]

In summary, since the present invention is constructed as described above, the cutting blade pedestal having the cutting blade mounted thereon can be attached to the lower side of the cutting frame so that the vertical position can be adjusted. However, since the supporting member that hangs down from the cutting blade frame to temporarily support the cutting blade pedestal can move up and down with respect to the cutting frame, when the vertical position of the cutting blade pedestal is adjusted, it follows this. Then, the support member also moves up and down. In other words, since the relative position between the support member and the cutting blade pedestal is kept substantially constant, even when the temporary cutting blade pedestal is set on the upper side, the lower end of the support member protrudes below the cutting blade pedestal. As a result, it is possible to eliminate the inconvenience that grass, straw, dust, etc. are caught on the lower end portion of the support member as much as possible, and ensure good cutting performance.

[Brief description of drawings]

FIG. 1 is a perspective view of a combine.

FIG. 2 is a schematic side view of a pretreatment unit.

FIG. 3 is a plan view of a main part of a cutting blade mounting portion.

FIG. 4 is a side view of the same.

FIG. 5A is a side view showing a state where the cutting blade is mounted on the upper side;
(B) It is a side view which shows a lower side attachment state.

6A is a side view of the support plate, FIG. 6B is a plan view of the locking bracket, and FIG. 6C is a side view of the locking bracket.

FIG. 7 is a cross-sectional view of essential parts showing the relationship between a support plate and engagement pins.

[Explanation of symbols]

 1 Combine 2 Pretreatment Section 9 Cutting Blade 12 Mowing Frame 16 Cutting Blade Support 20 Screw 23 Support Plate 23a Engagement Hole 23b Engagement Hole 24 Engagement Bracket 25 Engagement Pin 25a Large Diameter Part

Claims (3)

[Claims] 1. A mowing machine comprising a cutting blade pedestal to which a cutting blade is attached and which is attached to a lower side of a mowing frame so that its vertical position can be adjusted, and the cutting blade is suspended from the mowing frame. A structure for mounting a cutting blade in a reaper, wherein a supporting member for temporarily supporting the pedestal is provided so that the supporting member is vertically movable with respect to the reaping frame. 2. The cutting blade cradle or the support member according to claim 1, wherein an engaging hole is provided in the other member, while the other member is engaged with the engaging hole in a penetrating manner. In providing an engaging pin for temporarily supporting the cutting pin, a large-diameter part for preventing the engaging pin from coming off the engaging hole is formed at a tip end part of the engaging pin. 3. An engaging hole is provided in either one of the cutting blade cradle or the supporting member according to claim 1, while the other member is engaged with the engaging hole in a penetrating manner from the left-right direction to cut. In order to provide an engaging pin for temporarily supporting the blade receiving base, the supporting member is configured to be swingable in the left-right direction, and a cutting blade mounting structure in a reaper.