JPS642603Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a reaping frame support device for a combine harvester. Conventionally, the reaping frame of a combine harvester was supported by the machine wall of a threshing machine mounted on a chassis, and the lower part of the reaping frame was pivotally supported by a lifting hydraulic cylinder so that it could be raised and lowered. However, such combine harvesters suffer from defects such as the load and vibration of the reaping frame being applied directly to the machine wall support, deforming the threshing machine and reducing threshing performance, and causing fatigue failure of the support. It was hot.

In addition, a support is erected from the chassis in front of the threshing machine,
There are some systems in which the reaping frame is supported by the pillars, but in recent years, as the performance of the reaping unit has improved, an auxiliary combing device has been attached to the side of the combing device, and the reaping frame is supported by this. Due to the increased weight of the frame and lateral imbalance, the vertical, longitudinal, and lateral loads and vibrations that are applied to the column are large, and the strength of the cantilevered column with only the lower part fixed to the chassis is weak. There was a defect that not only the support but also the reaping frame was deformed, impeding reaping transportation performance and reducing seating comfort. Therefore, it is conceivable to connect the pillars to the front side plate of the thresher to reinforce the pillars, but if the pillars are simply connected, there is a risk that the threshing machine itself may be deformed or damaged as described above.

In view of the above-mentioned conventional situation, the present invention aims to improve this by making the front side plate of the threshing machine a double structure in the shape of a hollow box, and further reinforcing it by overlapping an intermediate member in the hollow part. A mounting arm is provided on the reinforcing part, and the support column is connected and fixed via the attachment arm, so that the reaping frame is supported by the reinforced support column that is integrated with the threshing machine.

Hereinafter, the structure of the present invention will be explained based on the drawings. In the figure, 1 is a combine harvester chassis supported by a traveling device 2 and having a reaping frame 3 mounted on the front. A thresher 4 is mounted, a driver's seat 5 is erected on the other side, and a paddy receiver is arranged behind it.

The reaping frame 3 has operating parts such as a combing case 6, conveying devices 7, 8, 9, and 10, and a cutting blade 11. These operating parts are connected to a gear case 12 provided at the rear upper part of the reaping frame 3. Power is transmitted more appropriately through a transmission function. A pulley 13 is provided on an input shaft projecting outward from the gear case 12, and is driven by a belt stretched between drive shaft pulleys provided on the chassis 1.
12a is a cylindrical body projecting inward from the gear case 12. Reference numeral 14 denotes an auxiliary combing device provided on the side of the combing case 6, which is detachably attached to the reaping frame 3.

Reference numeral 15 denotes a pair of left and right columns erected on the chassis 1 in front of the threshing machine 4, and the bases thereof are attached to the front part of the chassis 1 with bolts 16. Reference numeral 17 denotes a horizontal support shaft that connects the upper parts of the left and right columns 15, 15, and the support shaft 17 is provided with a pair of left and right metals 18 having recesses on the upper surface.
The cylindrical body 12a is supported by the cap 18a that covers the cylindrical body 12a, and the entire reaping frame 3 is configured to be rotatable around the cylindrical body 12a. Reference numeral 19 is a support arm protruding downward from the support shaft 17, and the support arm 19 has the support arm 19 extending downward from the support shaft 17.
A link shaft 19a is provided parallel to the link shaft 19a, and one end of the first link 20 is pivotally supported on the link shaft 19a.

Reference numeral 21 denotes a lower frame provided at the lower part of the reaping frame 3, and a bracket 21 provided at the rear thereof.
The front end of a hydraulic cylinder 22 mounted on the chassis 1 is pivotally supported at a. A second link 23 is pivotally supported at the upper end. The other end of the second link 23 and the end of the first link 20 are rotatably connected by a connecting pin, that is, both links 20, 23
is configured to be flexible.

In this way, the reaping frame 3 as a whole is supported by the upper part of the support column 15, and is movable up and down about the cylinder 12a by the back and forth operation of the hydraulic cylinder 22.

The threshing machine 4 on the chassis 1 is mounted with the supply port 24 facing forward and the feed chain 25 side facing the driver's seat 5 on the opposite side. The constituting inner plate 27a and the outer plate 27b on the outside for reinforcing the supply 24 portion are overlapped at appropriate intervals and are formed into a hollow box shape in cross section.As shown in FIG. One bent edge of 27b is the inner plate 27
The outer plate 27 is spot welded to the bent edge a of a.
The other bent edge 2 of b is spot welded to the plate surface of the inner plate 27a.

28 is an intermediate member made of an iron plate with a U-shaped cross section;
At the base of the supply port 24, the inner plate 27a and the outer plate 2
7b, and its bottom bent portion E is spot welded to the bent edge A of the inner plate 27a,
The bent portion of the bottom side on the opposite side is spot welded to the plate surface of the inner plate 27a, and the upper side is overlapped with the inner surface of the outer plate 27b.

Reference numeral 35 denotes a side cover, which is attached to the inner plate 27a and the intermediate member 28 by bolts 36 passing through it.

Reference numeral 29 denotes a mounting member provided to connect the support column 15 and the front side plate 27, and an intermediate member on the front side of the front side plate 27.
28, and its bottom bent part ``chi'' is triple welded to the overlapping parts ``a'' and ``b'' of the front side plate 27,
The bottom portion of the flat plate is spot welded to the surface of the outer plate 27b.

30 is a bolt for attaching the mounting member 29 to the front plate 27, 32 is a spacer interposed between the inner plate 27a and the outer plate 27b, and 31 is a nut, and the mounting member 29 is as strong as the front plate 27 as described above. It is integrally fixed by welding and bolts to the reinforced part. Reference numeral 29a denotes a mounting arm projecting forward from the mounting member 29.

Reference numeral 33 is a bracket having a U-shaped cross section provided below the inlet of the supply port 24, and its bottom side is connected to the front side plate 27.
A chain frame 25a is attached to an outer side 33b which is fixedly fixed to and protrudes forward, and an inner side is formed into a mounting arm 33a for connecting with the support column 15.

34 is a connecting body interposed between the threshing machine 4 and the support column 15 to connect the two, and the tip of a front arm 34b protruding forward from the middle part of the horizontal bar 34a is fixed to the upper end of the support support 15. The tips of rear arms 34c, 34c protruding rearward from the end of the horizontal bar 34a are screwed onto the mounting arms 29a, 33a, respectively.

The present invention is constructed as described above, and has a thresher 4
The supply port 24 portion of the front side plate 27 is formed into a hollow box shape in cross section, and in particular, the base of the supply port 24, which is subjected to the most load during threshing, is provided with an intermediate member 28 in the hollow portion to create a so-called triple structure. Because of its strong shape, even when a large amount of grain culm is fed, the upper cantilevered portion of the feed port 24 can be continuously operated for a long period of time without causing fatigue or deformation due to swinging up and down or back and forth. The strut 15 that supports the reaping frame 3 is connected to the above-mentioned reinforced part of the threshing machine 4 via a mounting arm, and the strut 15 and the threshing machine 4 provide three-dimensional rigidity. Since it constitutes a support body and supports the reaping frame 3, it can sufficiently support the reaping frame 3 without deformation or damage even if the weight of the reaping frame 3 is large or the left and right is unbalanced. This is something that can be done.

The present invention is directed to a combine harvester in which a support is erected from the chassis at the front of the thresher to support the reaping frame, and the lower part of the reaping frame is pivotally supported by an elevating cylinder so that it can be raised and lowered. , the upper part of the support is connected and fixed to the front plate of the threshing machine, and the front plate of the threshing machine has an inner plate constituting the threshing machine frame and an outer plate on the outside thereof that strengthens the supply port part. They are overlapped to form a hollow box-like cross section, and an intermediate member that can be joined to both is provided between the two side plates, whereby the support is fixed to the portion of the front side plate configured as described above where the intermediate member is present. A reaping frame support device for a combine harvester, characterized in that it is connected and fixed to a threshing machine via an arm to support the reaping frame, and the front plate of the threshing machine is strengthened by a simple structure. This provides rigidity, and by connecting this to the column that supports the reaping frame, an integrated rigid support is obtained, which can sufficiently withstand excessive weight and imbalance of the reaping frame. A reaping frame support device has now been constructed.

[Brief explanation of the drawing]

The drawings show a combine harvester equipped with the device of the present invention, in which Fig. 1 is a plan view, Fig. 2 is a side view of the main part, Fig. 3 is a perspective view of the main part, and Fig. 4 is a main part. 5 is a cross-sectional view of the main part taken along line B-B in Fig. 3, and Fig. 6 is an exploded perspective view of the main part.
FIG. 7 is a sectional view showing the assembly along the line A--A in FIG. 6, and FIG. 8 is an exploded perspective view of the main parts. 1... Chassis, 3... Reaping frame, 4... Threshing machine,
12a... Cylindrical body, 15... Support column, 22... Hydraulic cylinder, 27... Front side plate, 27a... Inner plate,
27b... Outer plate, 28... Intermediate member, 34...
Connector.

Claims (1)

[Scope of utility model registration request] In a combine harvester, in which a post is erected from the chassis at the front of the threshing machine to support the reaping frame, and the lower part of the reaping frame is pivotably supported by an elevating cylinder so that it can be raised and lowered, the upper part of the support is The front plate of the threshing machine is connected and fixed to the front plate of the threshing machine, and the front plate of the threshing machine has a hollow box shape in cross section by overlapping the inner plate constituting the threshing machine frame and the outer plate that is located outside of the frame and reinforcing the supply port. At the same time, an intermediate member that can be joined to both sides is provided between the two side plates, and the threshing machine is connected to the support column through a mounting arm that is fixed to a portion of the front side plate constructed as described above corresponding to the presence of the intermediate member. What is claimed is: 1. A reaping frame support device for a combine harvester, characterized in that the reaping frame support device is connected to and fixed to support the reaping frame.