JPH0119625Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention provides a traveling machine body having a threshing section, and a reaping section that reaps the planted grain culms and supplies the reaped grain culms to the threshing section, around the axis in the longitudinal direction of the machine body. The present invention relates to a combine harvester which is configured to be swingably connected so that the reaping part can be rolled relative to the traveling machine body so that the cutting height on both the left and right sides is the same regardless of the left and right inclination of the traveling machine body.

Conventionally, in the above combine harvester, when the reaping section is rolled against the traveling machine body, the distance between the grain culm conveying device in the threshing section and the reaping section's conveying device that supplies grain culm to this conveying device changes greatly. As a result, when the grain culm is transferred from the reaping section to the threshing section, the grain culm falls and is supplied from the reaping section side transport device, which is a wide distance away, to the threshing section side transport device, and the impact of the fall causes the grain culm to be disturbed in its posture. In order to prevent this problem, it is necessary to have a structure in which the grain culm from the reaping section is transferred to the threshing section, which complicates the structure of the transportation system. There were flaws.

The purpose of the present invention is to minimize the change in the distance between the reaping section side transport device and the threshing section side transport device due to reaping section rolling, and to connect the reaping section and the traveling machine body while shortening the machine body length. The purpose is to modify it so that it can be made stronger.

A characteristic configuration of the present invention is that, in the above-mentioned combine harvester, the reaping section swing axis is disposed close to the grain culm conveying device in the threshing section, and is an inclined axis located at the bottom level toward the front end of the machine body. Its functions and effects are as follows.

That is, when the rolling axis is arranged close to the threshing section side conveying device, the swinging fulcrum of the reaping section side conveying device, which swings relative to the threshing section side conveying device as the reaping section rolls, becomes the threshing section side conveying device. It is located near the terminal end of the reaping section side transport device, which is located close to the starting end of the reaping section. Therefore, the change in the distance between the reaping section-side conveying device and the threshing section-side conveying device caused by the rolling of the reaping section can be suppressed to a small extent, and regardless of the rolling of the reaping section, the grain culm is transferred from the reaping section to the threshing section without causing disturbances in posture, etc. It has become possible to carry out the transfer smoothly without any trouble, and the transfer configuration has been simplified by eliminating the need to provide an intermediate conveyance to ensure that the grain culm transfer can be carried out smoothly, as is the case when there is a wide change in the interval. I was able to make it possible. Furthermore, by making the rolling axis the inclined axis, compared to the case where the rolling axis is horizontal, even if the connecting frame between the reaping part and the traveling machine body is longer, and the distance between the reaping part and the threshing part main body can be increased. Even if the width is narrower, the connection frame can be placed between the upper and lower parts of the traveling machine and the reaping section side transport device.
It is arranged along the front downward slope of the reaping section transport device, and the connection span of the connection frame to the reaping section and the traveling machine body can be lengthened. Therefore, the long connection span makes the connection between the reaping section and the traveling machine body advantageous in terms of strength.Moreover, the reaping section and the threshing section main body can be brought as close together as possible, and the overall length of the machine body can be made as short as possible. It came to this.

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, a lifting device 1 and a reaping device 2 for the planted grain culm transport the harvested grain culm backwards in an upright position, and at the end of the transport, change the posture to a horizontally falling position and move the harvested grain culm to the threshing section 3. A reaping section 5 having a vertical conveying device 4 for supplying to the starting end of a threshing feed chain 3a serving as a grain culm conveying device is installed at the front part of a crawler type traveling machine body having the threshing section 3, driving section 6, etc. are connected to form a combine harvester.

As shown in FIG. 2, the vertical conveying device 4 is configured to carry two reaped grain culms raised by two lifting devices 1, 1 on the left side of the machine body into first and second rows. The structure is such that the two-rotation packers 7a and 7b merge and transport the harvested grain to the rear of the reaping device 2, and the one-row reaped grain culm is raised and reaped by the pulling device 1 on the right side of the machine body. The third
The structure is such that the rotary packer 7c scrapes and conveys the grain to the rear of the reaping device 2, and the grain culm from the third packer 7c is transferred to one ear-side locking conveyance endless rotary chain 8 and the first to third A first conveyance section that supplies the threshing feed chain 3a by means of three stock side clamping conveyance endless rotary chains 9, 10, 11;
The grain culms from the first and second packers 7a, 7b are conveyed by the first transport section with the grain end side stopped so that they are supplied to the threshing feed chain 3a together with the grain culms from the third packer 7c. A second conveyance section is provided which joins the first conveyance section midway through an endless rotation chain 12 and a stock side pinch conveyance endless rotation chain 13.

The second plant side chain 10 is configured so that it can be oscillated using the conveyance end side as a fulcrum so that the conveyance start end side approaches and separates from the ear side chain 8, and by this rocking operation, the third strain Original side chain 1
1 is inherited from the second plant side chain 10 and the gripping position is changed in the direction of the culm to adjust the handling depth.

An upright guide rail 1 for the grain culm locking and conveying pawl 8a that the ear side chain 8 has that can swing up and down.
4, the conveying claw 8a is connected to the second stock side chain 10.
In the intermediate route section where the grain culms are transferred by cooperation with the chain 8, the upright guide acting section is configured to be located farther away from the chain 8 than other route sections in this intermediate route section. be. That is, the receding angle of the conveying pawl 8a when passing through the intermediate path portion where the grain culm may be slid against the conveying pawl 8a to adjust the handling depth is the same as the receding angle when passing through other path portions. The grain culm should be larger than the corner to prevent the grain culm from slipping through the conveying claw 8a except in the middle route, and even if the culm is soft and bends at the part where it contacts the conveying claw 8a, the tip of the grain is Even if the handling depth is adjusted in the direction of pulling out the grain culm from the ear side chain 8 toward the plant base when the grain culm is in a state where it rests on the conveyance claw 8a, the grain culm is lower than the position where the grain culm is held by the conveyance claw 8a. The structure is such that it is slid as far as possible toward the downstream side of the transfer, so that it is difficult for the ear to break or other breakage to occur.

As shown in FIGS. 1 to 3, a connecting frame 15 having one round shaft portion 15a and first and second sheet metal portions 15b, 15c is connected to a pair of front and rear support columns 1.
6a, 16b, and a bending/extending link mechanism 17, a first axis P in the longitudinal direction of the machine body is arranged on the traveling machine base 18 in an inclined state closer to the threshing feed chain 3a and located closer to the bottom level toward the front end of the machine body. It is configured so that it can freely swing up and down around the _first hydraulic cylinder 19, and can also be operated swinging and fixed by the first hydraulic cylinder 19, and is also used as the transmission case of the reaping section 2, as well as the longitudinal direction section of the machine body. The reaping frame 20, which includes a reaping frame 20a and a transverse body part 20b, is vertically swung around a second axis _P2 in the transverse direction of the machine body, to the first sheet metal part 15b via a pair of bearing members 21a and 21b. The reaping section 2 is connected freely to the first hydraulic cylinder 1 and is configured to be swingable and fixed by the second hydraulic cylinder 22.
9 performs rolling and fixing operations around the first axis _P1 , and the second hydraulic cylinder 22 performs rolling and fixing operations around the first axis P1.
It is connected to the traveling body so that it can be swung up and down and fixed around the axis _P1 . and,
The two ultrasonic sensors 23a and 23b are configured so that each of them emits ultrasonic waves toward the field and receives reflected sound waves from the field, and is integrated with the reaping section 2 to perform vertical movement of the vehicle against the traveling vehicle and from the traveling vehicle. It is attached to both the left and right sides of the reaping section 2 so that the machine rolls, and information is input from the left and right sensors 23a and 23b, respectively, and the reaping is performed based on the time required from the time when the sensor 23a or 23b transmits a sound wave until it receives a sound wave. a rolling control mechanism (not shown) that detects the ground heights of the left and right sides of the section 2 and automatically operates the first cylinder 19 so that the difference between these two detected heights falls within a set range; sensor 23a,
23b, the height above the ground of the reaping section 2 is detected in the same manner as the rolling control mechanism, and the second cylinder 22 is automatically operated so that the detected height is within a set range. A control mechanism (not shown) is mounted on each of the traveling machines, and the mowing height can be maintained almost the same on both sides regardless of whether the traveling machine is tilted from side to side. This allows work to be done while maintaining approximately the same height.

In addition, the transmission belt 24 shown in FIGS. 1 and 2
The rotating force of the drive pulley 25 provided in the threshing section 3 is transferred to the transmission mechanism 2 attached to the connection frame 15.
6 is for transmitting the signal to the input pulley _26a , which is provided coaxially with the first axis P1. Further, the transmission belt 27 transmits the rotational force of the output pulley 26b of the transmission mechanism 26 to the reaping section input pulley 28 attached to the reaping frame ₂₀ concentrically with the second axis P2. It is for.

[Brief explanation of drawings]

The drawings show an embodiment of the combine harvester according to the present invention, in which Fig. 1 is a side view of the front part of the combine, Fig. 2 is a schematic plan view of the front part of the combine, and Fig. 3 is a partially cutaway front view of the reaping part connection part. It is a diagram. 2... Reaping section, 3... Threshing section, 3a... Grain culm conveying device, _P1 ... Reaping section swing axis.

Claims (1)

[Scope of utility model registration request] A reaping section 2 that reaps planted grain culms and supplies reaped grain culms to the threshing section 3 is connected to a traveling machine body having a threshing section 3 so as to be swingable around an axis _P1 in the longitudinal direction of the machine body. The combine harvester is a combine harvester in which the reaping section swing axis _P1 is an inclined axis disposed close to the grain culm conveying device 3a in the threshing section 3 and located at the bottom level toward the front end of the machine body.