JPH0212526B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a reaping section support device for a combine harvester.

(Prior Art) A conventional combine harvester includes a reaping section that reaps grain culms in a field, a threshing section that threshes and sorts the harvested grain culms, a traveling section, and other accessory devices.

The reaping section has the upper end of its support frame pivoted to the threshing section side frame, expands and contracts the lower hydraulic system, and adjusts vertical movement according to the dryness and humidity of the field or the growing condition of the rice. When the vehicle is going over a ridge or a ridge, the hydraulic system is fully extended to raise the vehicle to its highest position.

Note that Japanese Patent Application Laid-Open No. 145131/1983 describes a technique in which a separate hydraulic device is extended and contracted to adjust the movement of only the lifting device of the reaping section in the vertical direction.

(Problems to be Solved by the Invention) The reaping section of the known combine harvester has a structure in which the upper end of its support frame is pivoted to the threshing section side frame, and the vertical movement is adjusted by expanding and contracting the lower hydraulic device. Therefore, there were problems in inspection, maintenance, and adjustment between the reaping section and the threshing section. In the device described in Japanese Patent Application Laid-open No. 52-145131, a separately provided hydraulic device is expanded and contracted to adjust the lifting device in the vertical direction.
Since the conveying device is not moved back and forth, maintenance of the transition section between the conveying device and the threshing section is almost impossible.

(Means for Solving the Problem) Therefore, the present invention provides a threshing section 5 in which the grain supply chain 8 and the grain culm lever 10 are in the direction of movement of the machine body above the traveling section 2, and the threshing section 5 is In front, there is a branch 1
5, the pulling device 16, the cutting blade 17, and the conveying device 18,1
A reaping section 11 is formed by integrating the reaping section 9 and the reaping section 11 into a framework, and the reaping section 11 is attached to the traveling section 2 and the threshing section 5 so that it can move up and down and slide back and forth. This is a support device for the transfer section, which facilitates maintenance of the transfer section.

(Example) An example of the present invention will be described with reference to the drawings. 1 is a combine harvester, 2 is a running section, and 3 is a running crawler 3, 4.
1 is a traveling frame, 5 is a threshing section, and 11 is a reaping section.

The threshing section 5 includes a handling chamber 6 having a threshing drum and a sorting chamber 7 that houses a sorting device.
An endless grain culm supply chain 8 and a grain culm lever 10 which is elastically attached to the grain culm supply chain 8 side by a compression coil spring 9 are provided on the side of the grain culm supply chain 8 .

The reaping section 11 has a framework structure including a grass cutting body 15, a pulling device 16, a cutting blade 17, a tip conveying device 18, and a root conveying device 19. 12 is a support frame of the reaping section 11;
A reaping gear box 13 is provided at the lower end of the reaping gear box 13 so as to form a T-shape with the reaping gear box 1.
A plurality of grass dividing rods 14 are attached to extend forward along the ground from 3.

At the tip of the weeding rod 14, a weeding body 15 is provided to scrape out the grain culms in the field, and behind it, a plurality of lifting devices 16 are provided to vertically raise the weeded grain culms. It is provided with the upper end tilted backwards.

A clipper-shaped cutting blade 17 for cutting the root part of the erected grain culm is supported close to the ground at the rear end of the weeding rod 14. In addition, this cutting blade 17
An ear conveying device 18 and a root conveying device 19 for conveying the harvested grain culm to the threshing section 5 are installed above the grain culm. Reference numeral 20 denotes side covers provided on both left and right sides of the reaping section 11.

The reaping section 11 described above is attached to the threshing section 5 or the machine frame by an upper coupling fitting 21 and a lower support device 22.

The upper coupling fitting 21 is provided between a shaft stopper 23 provided on the supply side of the grain culm supply chain 8 of the threshing section 5 and a shaft stopper 24 at the upper end of the support frame 12.

A rotatable link 25 and a lever 26 are fixed to the shaft stopper 24 . The link 25 is formed by two levers 27 and 28, the lever 28 being pivotally fixed to the shaft stopper 24, and the lever 27 being pivotally fixed to the shaft stopper 23. The total length of the two levers 27 and 28 when extended is approximately twice that of the lever 26, and the link 25 and lever 26 can be pivotally connected to the pivot fitting 23 at the same time. In addition, they are constructed so that they can be independently and selectively pivoted.

That is, this allows the shaft stopper 24 of the reaping section 11 to connect the terminal ends of the conveying devices 18 and 19 to the threshing section 5.
It is formed so that it can freely move forward and backward with respect to the threshing section 5 so as to be brought close to or separated from the threshing section 5.

Further, the lower support device 22 has both ends rotatably pivoted to a support arm 29 that projects forward from the lower end of the threshing section 5 and to the tip thereof and the lower end of the support frame 12. It is provided with a connecting lever 30 that connects these, and a telescopic hydraulic device 31 is installed between the connecting lever 30 and the traveling frame 4.

By operating this hydraulic system 31 from the driver's seat, the reaping section 11 swings around the pivot at the tip of the support arm 29, but as shown in FIG. , an upper coupling fitting 21 which is connected by a lever 26 and cannot be expanded or contracted.
When the reaping part 11 is connected by the above, the reaping part 11 is vertically adjusted around the tip of the support arm 29 and the shaft stop of the shaft stop 23.

As shown in FIG. 2, when the reaping section 11 and the threshing section 5 are connected by the telescopic upper coupling fitting 21, when the hydraulic device 31 is extended, the weeding body 1
The link 25 extends while the tip of the link 5 remains in contact with the ground.
The upper ends of the conveying devices 18 and 19 are separated from the threshing section 5, so that the grain culms harvested by hand can be supplied to the threshing section.

Further, on the side of the reaping section 11, there is an operation box 3 equipped with various levers for operating each part of the machine.
2 is provided.

In FIG. 5, 33 is a cylinder, and 34 is a link rod.

(effect) Next, we will discuss the effect.

Place the upper coupling fitting 21 in the state shown in FIG. 1, that is,
A lever 26 is installed between the shaft stopper 23 and the shaft stopper 24.
When entering the field with both ends of the upper coupling fitting 21 not being able to expand or contract, when the hydraulic device 31 is expanded or contracted depending on the condition of the grain culm, the weeding body 15, the pulling device 16, and the cutting blade 17 are moved. The reaping section 11, which has a frame structure including the reaping section and the conveying devices 18 and 19, moves up and down around the shaft attachment part of the shaft stopper 23 and the support arm 29, so that the cutting height position is adjusted. In addition,
When the hydraulic device 31 is fully extended, the reaping section 11 moves upward, and even if there is a high ridge, it moves forward, easily crossing it, and reaps and threshes the adjacent field.

When moving forward after adjusting the cutting height position, the grass is divided by the weed splitting body 15, pulled up by the pulling device 16, harvested by the cutting blade 17, transported by the tip conveying device 18 and the root conveying device 19, and then connected to the grain culm supply chain 8. The grain is fed to the transfer handling room 6 using a culm lever 10 and threshed.

When harvesting with the combine harvester 1, the four corners of the field cannot be harvested, resulting in uncut areas, which are harvested by hand. Once the hand-harvesting is finished,
The lever 26 is disengaged from the shaft stopper 23, and the levers 27 and 28 of the link 25 are extended, and when the hydraulic device 31 is extended in this state, the reaping section 11 moves forward while sliding on the ground due to its own weight. The space between the shaft stopper 23 and the shaft stopper 24 is widened.

Therefore, the hand-cut grain culm can be supplied to the supply section of the grain culm supply chain 8 and the grain culm lever 10. In addition, maintenance of the supply section of the grain culm supply chain 8 and the grain culm lever 10 can be performed.

(Effects) A conventional combine harvester includes a reaping section that reaps grain culms in a field, a threshing section that threshes and sorts the harvested grain culms, a traveling section, and other accessory devices. The reaping section has the upper end of its support frame pivoted to the threshing section side frame, expands and contracts the lower hydraulic system, and adjusts vertical movement according to the dryness and humidity of the field or the growing condition of the rice. When the vehicle is going over a ridge or a ridge, the hydraulic system is fully extended to raise the vehicle to its highest position. Note that Japanese Patent Application Laid-open No. 145131/1983 describes a technique in which a separate hydraulic device is extended and contracted to move a lifting device in the reaping section in the vertical direction.

The reaping section of the known combine has a configuration in which the upper end of its support frame is fixed to the threshing section side frame, and the lower hydraulic device is expanded and contracted to adjust the vertical movement. There were problems with inspections, maintenance, and adjustments during the period. In the device described in Japanese Patent Application Laid-open No. 52-145131, a separately provided hydraulic device is expanded and contracted to adjust the lifting device in the vertical direction.
Since the conveying device is not moved back and forth, maintenance of the transition section between the conveying device and the threshing section is almost impossible.

However, in the present invention, a threshing section 5 is provided above the running section 2, in which the grain culm supply chain 8 and the grain culm lever 10 are in the direction of movement of the machine. 16, cutting blade 17, and conveying device 18,
Reaping section 11 constituted as one framework with 19
The reaping section 11 is a reaping section support device of a combine that is attached so that it can move up and down and slide back and forth with respect to the running section 2 and the threshing section 5, and the maintenance of the transfer section is easy. It produces effects that are easy to perform.

[Brief explanation of drawings]

Figure 1 is a side view of the combine with the upper coupling fittings in a non-retractable state, Figure 2 is a side view of the combine with the upper coupling fittings in a freely retractable state, and Figure 3.
The figure is an enlarged side view of the upper coupling fitting, FIG. 4 abc is a diagram of an example of the upper coupling fitting, and FIG. 5 is a diagram of another embodiment of the upper coupling fitting. Explanation of symbols 1...Combine harvester, 2...Traveling section, 3
... Traveling crawler, 4... Traveling frame, 5... Threshing section, 6... Handling room, 7... Sorting room, 8... Grain culm supply chain, 9... Compression coil spring, 10... Grain culm lever, 1
DESCRIPTION OF SYMBOLS 1... Reaping part, 12... Support frame, 13... Reaping gear box, 14... Grass dividing rod, 15... Grass dividing body, 16
... Lifting device, 17... Cutting blade, 18... Spear tip conveying device,
19... Root conveyance device, 20... Side cover, 21
... Upper coupling fitting, 22... Lower support device, 23... Shaft stopper, 24... Shaft stopper, 25... Link, 26...
Lever, 27... Lever, 28... Lever, 29... Support arm, 30... Connection lever, 31... Hydraulic system, 32... Operation box, 33... Cylinder, 34
…Link.

Claims (1)

[Claims] 1. A threshing section 5 is provided above the running section 2, where the grain supply chain 8 and the grain culm lever 10 are in the direction of movement of the machine;
In front of the threshing section 5, there are a weeding body 15 and a pulling device 1.
6, the cutting blade 17, and the conveying devices 18, 19 are integrated into a framework to form a reaping section 11, and the reaping section 11 can move up and down and slide back and forth with respect to the traveling section 2 and the threshing section 5. A movable combine harvester reaping part support device.