JPS6021941Y2 - Combine long and short culm adjustment device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a long and short culm adjustment device for a combine harvester.

Conventionally, there has been a length adjustment means in which a lower conveying device is provided below an upper conveying device for holding the tip side so that the lower conveying device can be moved toward and away from the upper conveying device. The displacement operation of the conveying device becomes complicated as the support structure becomes more complicated, and there are disadvantages in that it is difficult to easily process and assemble the device, and it becomes expensive.

In addition, there is a conventional technology in which an adjustment plate that can change the inclination angle is provided below the culm conveyance device, but cutting blades are provided in the middle and on the sides of the adjustment plate, and these are arranged side by side in the left and right direction of the machine. Therefore, it was difficult to shorten the transfer distance of the culm, and it was difficult to use it in a large riding combine harvester for multi-row cutting.

The present invention solves the above-mentioned conventional drawbacks, and includes installing conveyor tines for clamping the stock head below and approximately parallel to the upper conveyor device that clamps and conveys the tip side of the culm, and the feed of the conveyor tine. A lower pre-conveyance device is provided on the starting end side, and a lower post-conveyance device is provided on the rear end side thereof, and the bottom plate of the conveyance path for sliding contact with the stock base is attached below the conveyance tine so as to be freely accessible and detachable. is attached rotatably and fixedly, and is configured so that it can be fed to the lower post-transport device after the base of the culm inherited from the lower pre-transport device to the transport tine is aligned by the bottom plate of the transport path, and the lower pre-transfer device The grain culm holding device prevents the grain culm from falling off immediately after harvesting with the cutting blade, and the grain culm holding device of the lower conveyance device prevents the grain culm from falling off which is inherited to the foot chain. By holding the culm whose length is adjusted by the upper conveying device and the conveying tine, it is possible to prevent inconveniences such as bending the culm midway, and to smoothly change the clamping range of the culm. Sometimes, by aligning the root of the grain culm with the bottom plate of the conveyance passage, the tip of the grain culm can be aligned and appropriate length adjustment can be obtained. The culm can be securely clamped to prevent the culm from falling off during threshing, and in particular, the lower conveying intermediate section, which in the conventional structure was only used for clamping and conveying the culm, can be used to adjust the length and shortness of the culm and to align the stock. By doing this, we have created a long/short culm adjustment device for a combine that has a simple structure that maintains the culm conveyance function, allows easy processing, assembly, and maintenance and inspection, and is easy to handle and improve work efficiency. This is what we are trying to provide.

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

Figure 1 is a side view of a combine harvester, in which 1 is a machine base, 2 is a pair of running rollers 3, 3 is a track frame equipped on both left and right sides, and 4 is a track that allows the machine base 1 to rotate in the vertical direction. A pivot shaft supported by the frame 2; 5 is a cylinder that lifts the front part of the machine 1 upwards using the pivot shaft 4 as a fulcrum; 6 is a threshing machine mounted on the machine 1; A barrel 7 (see FIG. 2) is mounted on a shaft along the longitudinal direction of the machine base 1.

8 is a reaping device for multi-row mowing, and multiple grass dividing boards 9...
... and a cutting blade 10.

Reference numeral 11 denotes a shell culm transfer device, which is composed of a feed chain 12 and a culm rod 13, and is connected to the threshing machine 6.
It is provided along the handling opening (not shown).

14 is a grain frying conveyor device that takes out fine grains from the first mouth;
Reference numeral 5 indicates a straw cutting device detachably installed at the rear of the threshing machine 6; 16 indicates a straw removing chain extending from the terminal end of the feed chain 12 to the upper part of the cutter of the straw removing device 15;
7 is a cover for the chain 16; 18 is a driving sprocket for the running roller 3; 19 is the sprocket 1;
A front idler supporting the end of the roller 3 running together with 8, a carrier roller 20 slidingly contacting the upper inner surface of the running roller 3, and 21... on the lower inner surface of the running roller 3. A plurality of track rollers are brought into sliding contact.

Furthermore, 22 is a suction/discharge seat device whose suction port is opened toward the sorting air path.

Next, a raking drum is installed above the cutting blade 10 in the reaping device 8, and the raking drum 23.
For ..., use star foil 2 to scrape the base side of the culm.
Equipped with 4... so that it can be freely rotated.

Each star foil 24 has left and right shell culm lifting devices 25.
A sprocket (not shown) for driving the lower pre-conveyance device 26 is provided coaxially with the star wheel 25.

The starting end of the lower pre-conveyance device 26 is located above the cutting blade 10, and a lower pre-conveyance device 27 is installed behind the device 26 with a predetermined interval.

Here, the terminal end of the device 27 is extended toward the starting end of the foot chain 12, and each of the conveying devices 26.2
A conveyance tine 28 is installed below the conveyance tine 28, and a conveyance passage bottom plate 29 is provided below the conveyance tine 28, and the lower part of the bottom plate 29 is pivotally supported by a pivot rod 30. It is installed so that it can be rotated and fixed using the lower part as a fulcrum.

Further, as shown in FIG. 2, culm guide rods 31 are installed on the sides of each of the elements 26, 28, and 29 to form a culm base conveying passage 32 for conveying the culm base of the culm. There is.

Furthermore, a connecting member 33.
A piston rod 36 of a hydraulic cylinder 35 is connected via 34.

Further, an upper conveying device 38 for pinching and conveying the tip side of the culm is extended above the lower conveying device 37 composed of the above-mentioned elements 26 to 29.

On the other hand, detection devices 39 and 40 are attached to the inner surface of the handling cylinder pulley cover as shown in FIG.

Each detection device 39.40 is equipped with a microswitch 41 having a normally open contact 41a and a microswitch 42 having a normally closed contact 42b.
0 to detect the handling depth of the shell culm inserted into the handling chamber 43, and to vary the inclination angle of the conveyance passage bottom plate 29 via a hydraulic circuit.

As shown in FIG. 2, a chamber 35a on one side of the cylinder 35
The chamber 35b on the other side is connected to a hydraulic pump 44 and a tank 45 via a 4-port electromagnetic switching valve 48 having solenoids 46 and 47, and a relief valve 40 is connected to the discharge side of the hydraulic pump 44. .

On the other hand, as shown in FIG. 3, the main switch 5 is connected to the battery 50.
1 is connected, and a series circuit of the contact 42b of one microswitch 42 and the solenoid 47 is connected to the main switch 51, and a series circuit of the contact 41a of the other microswitch 41 and the solenoid 46 is connected in parallel, Battery 50 and each solenoid 47, 46
Manual switches 52 and 53 are connected between the two.

The present invention is constructed as described above. For example, when one person operates the reaping latch lever 56, the main switch 56
1 is turned ON and drives the solenoid 47, the switching valve 48 is switched and the hydraulic pressure from the hydraulic pump 44 is supplied to the chamber 35a on one side of the cylinder 35, and the transfer passage bottom plate 29 is
The piston rod 36 connected to the piston moves in the direction of arrow a in FIG. 2, and the bottom plate 29 swings counterclockwise (toward the deep handling side) as shown by the solid line in FIGS. 1 and 2.

Therefore, the culm cut by the cutting blade 10 is pinched and conveyed rearward along the conveyance passage 32 while the base of the culm is aligned with the conveyance passage bottom plate 29 in such a state, and the terminal end of the lower conveyance apparatus 27 is This is sequentially inherited from the beginning to the starting end of the foot chain 12.

Moreover, the tilted state of the bottom plate 29 can be maintained while the bottom plate 29 is moved clockwise (toward the rear end) in FIGS. 1 and 2 by means described later with a time delay depending on the amount of operation. Therefore, the shell culm at the early stage of reaping can be transported while being handled thoroughly, and the culm can be prevented from falling off.

Next, the grain culm transported by the lower transport device 37 is inserted into the handling chamber from the handling port, and this culm is transferred to each of the detection devices 3.
9.40, the contacts 41c and 42b of each microswitch 41.42 are actuated to energize one solenoid 46.

As a result, the electromagnetic switching valve 48 switches and the hydraulic pump 44
Hydraulic oil is supplied to the chamber 35b on the other side of the cylinder 35 and pushes down the piston rod 36 connected to the conveyance passage bottom plate 29 in the direction of the arrow in FIG. Swing it clockwise (toward the rear end) as shown, and make the angle of inclination gentle.

At this time, if the grain culm is in contact with only one of the detection devices 40, each contact 41a, 4 of the microswitch 41.
2b are both off, the current to each solenoid 46, 47 is cut off, and the swinging of the conveyance path bottom plate 29 is stopped with the tip of the grain culm maintained between the sensor arms of each detection device 39, 40. Ru.

Next, when a relatively short culm is transported and its tip does not contact any of the sensor arms of each detection device 39, 40, the contact 42b of the microswitch 42 in one of the detection devices 40 is always Since the state is closed, the solenoid 47 is energized again, and the conveyance passage bottom plate 2 is energized again as described above.
9 is oscillated counterclockwise as shown by the solid line in Figures 1 and 2 to insert the shell culm into the deep handling side, and by repeating this automatic control, the handling depth of the shell culm is increased. It is automatically controlled.

In addition, when adjusting the handling depth by manual operation, the handling depth of the culm can be controlled by turning on and off the manual switches 52 and 53 as appropriate, as in the case of automatic adjustment.

In the above embodiment, the piston rod 36 of the hydraulic cylinder 35 is connected to the lower surface of the upper end of the conveyance passage bottom plate 29.
Although the bottom plate 29 is configured to be tilted by hydraulic operation, a flexible wire is connected to the upper end of the conveyance path bottom plate 29 and the wire is extended to the vicinity of the driver's seat, and the bottom plate 29 is tilted by operating a lever. It may also be configured to do so.

As is clear from the embodiments described above, the present invention provides a conveying tine 28 for holding the stock head below and approximately parallel to the upper conveying device 38 that pinches and conveys the tip side of the culm. A lower pre-conveyance device 26 is provided on the feed start end side, and a lower post-conveyance device 27 is provided on the feed end side thereof, and below the conveyance tine 28, a device for sliding the stock base can be freely approached and separated. The conveyance passage bottom plate 29 is rotatably attached, and the culms inherited from the lower pre-conveyance device 26 to the conveyance tines 28 are arranged so that they can be fed to the lower post-conveyance device 27 after being aligned by the conveyance passage bottom plate 29. By holding the grain culm in the lower pre-transport device 26, it is possible to prevent the grain culm from falling off immediately after harvesting by the cutting blade 10, and by holding the grain culm in the lower post-transport device 27, the grain culm inherited to the foot chain 12 can be prevented from falling off. The upper conveying device 38 and the conveying tine 28 can prevent the shell culm from falling off and adjust its length by the conveying path bottom plate 29.
By holding the grain culm between the two, it is possible to prevent inconveniences such as bending the grain culm in the middle, and to smoothly change the clamping range of the husk.
9, the tip of the shell culm can be aligned to obtain proper length and shortness adjustment, and by aligning the stem base, the shell culm can be securely held in the foot chain 12, so that it can be used during threshing. It is possible to prevent the shell culm from falling off, and in particular, the lower conveyance intermediate section, which in the conventional structure had only the function of pinching and conveying the shell culm, is used to adjust the length and shortness of the culm and to align the stock, thereby improving the transport function of the shell culm. It has a simple structure that allows for easy processing, assembly, and maintenance and inspection while maintaining the same condition, and has remarkable effects such as being easy to handle, improving work efficiency, and being extremely practical.

[Brief explanation of the drawing]

FIG. 1 is a side view of a combine harvester showing an embodiment of the present invention;
FIG. 2 is a system diagram showing the long and short culm adjustment device, and FIG. 3 is its electric circuit diagram. 26...Lower pre-transport device 27...Lower pre-transport device, 28...Transport tine, plate, 38...Upper transfer device. 29...Bottom of conveyance passage

Claims (1)

[Scope of utility model registration request] A conveyor tine 28 for clamping the stock head is provided below and approximately parallel to the upper conveyor device 38 that pinches and conveys the tip side of the culm, and a lower pre-conveyance device 26 is installed on the feed start end side of the conveyor tine 28. A lower post-transport device 27 is connected to each end of the feed, and a transport path bottom plate 29 for sliding the base of the stock is rotatably fixed below the transport tine 28 so as to be able to approach and separate from it. A long/short culm adjustment device for a combine harvester, characterized in that the culms that are inherited from the lower pre-conveyance device 26 to the conveyance tines 28 can be fed to the lower post-conveyance device 27 after being aligned by a conveyance path bottom plate 29.