JPS6120244B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION In general, grain culms that are arranged in an orderly manner in a field have a substantially constant rigidity, and can be transported in an orderly manner, but grain culms that are laid down become soft and easily bend. If the culm length is detected at the same position as , it is treated as serious.

Even in the same field, there are often a mixture of erect grain culms and lodging grain culms depending on the part, and in such cases, adjusting the culm length detector by moving it toward the culm allows you to adjust the culm length regardless of the condition of the grain culm. A predetermined handling depth can be achieved.

In addition, when the grain culm is completely collapsed or extremely close to it and it is not suitable to adjust the handling depth using the detection signal, it is necessary to switch to manual adjustment. If left facing the grain culm movement path, the movement of the soft grain culm will be obstructed by the culm length detector, its posture will be significantly disturbed, and straw debris etc. will become entangled with the culm length detector.

Furthermore, in a system in which the sensor is configured as a single arm with a bent tip and the culm length is detected by the pressing force of the grain culm against the arm, when the tip of the grain culm comes into contact with the bent part of the arm, The pressing force fluctuates depending on the hardness and softness of the grain culm, and it is not possible to set an appropriate range of handling depth.Furthermore, the tip of the ear receives abnormally large resistance from the arm, causing a delay in the tip of the ear, which causes the ear to be threshed. There were problems such as the fact that it was inserted into the supply port of the device in a crooked state, resulting in many split ears and culms.

The present invention solves the above-mentioned problem by detecting the culm length of the grain culm to be threshed using a plurality of ear side tentacles 32, 32' and stock base tentacles 33, 33' to adjust the handling depth. In the combine harvester, at least the panicle side contact pieces 32, 32' are integrally attached to the panicle detector 33 in a state where they are arranged side by side in the culm direction, and
The above-mentioned problems have been solved by providing the panicle detector 33 so that it can be moved in the direction of the culm and can be changed into a working position and a non-working position.

An embodiment of the present invention will be explained with reference to the drawings.
Reference numeral 1 denotes a machine body having a traveling device 2, and is equipped with a threshing device 3 having a supply port 4 at the front and a pruning rail 5 and a feed chain 6 attached along a handling port at the side.

7 is equipped with a reaping device consisting of a cutting blade 8, a horizontal conveying belt 9, a grain culm combing body 10, etc. on the front part, and the rear part is attached to the fuselage 1.
It is a support frame that is pivoted to the front part of the machine so that it can move up and down with a support shaft 11, and the cutting height can be adjusted by a hydraulic cylinder installed between it and the machine body. A guide frame (not shown) is provided above the supply port 4 of the device 3, which is supported by a pivot 12 to be able to move vertically, and whose front portion is connected to the reaping device by a link 14. An ear-side conveyance belt 18 extending in the front-rear direction is stretched, and the front part of the guide rod 17 installed in parallel with this is attached to the reaping device, and the rear part is attached to the upper part of the supply port 5 of the threshing device 3.

In addition, on the lower side of the panicle side conveyance belt 18, there is a clamping rod 16.
A support frame 15 of the stock clamping conveyance belt 15 in the front-rear direction is provided, and the support frame 15 of the stock clamping conveyance belt 15
The front end of the support frame 15a is rotatably attached to the frame 13 of the reaping device by a vertical support shaft so that the rear part can be adjusted in horizontal movement, and the middle part of the support frame 15a is shown in FIG. As shown in the figure, it is attached to the tip of a rod 20 that is supported on the support frame 7 through a bearing sleeve 17 so as to be slidable in the lateral direction. It is connected via a connecting rod 22 to an elongated hole 23' at the lower end of a manual lever 23, which is mounted on the side so as to be tiltable laterally.

Further, a screw shaft 26 attached to the bearing sleeve 19 and rotated by a control motor 25 penetrates through the ring body 21, and the screw shaft 26 has a threaded groove inside the ring body 21 and is compressed by a spring 27. Since the screw shaft 26 is driven by the control motor 25, the stock clamping conveyor 15 rotates around its front part and its rear part moves laterally, and the manual lever 2
3 is tilted, the ball 28 moves backward against the spring 27, and the stock clamping conveyor 15 moves laterally together with the ring body 21 and the rod 20, and the handling depth is adjusted together.

Above the ear side conveyance belt 18, there is a stand guide whose lower edge is inclined toward the operation panel 24 side (laterally) to the extent that the grain stalks being conveyed along the ear side conveyance belt 18 can lean against it. The surface 29a constitutes an inverted F-shaped ridge line 29b, which is a gently inclined ridge line diagonally rearward and upward from a position facing substantially the front end of the ear side conveyance belt 18, followed by a gradually steeper ridge line. A guide plate 29 is provided with a receiving guide surface 29c formed by bending the support guide surface 29a toward the operation panel 24 side, and a notch 30 provided at the rear upper part of the guide plate 29 is provided on both sides of the lower surface of the guide plate 29. The guide rails 31, 31 in the vertical direction are protruded, and the guide grooves on both sides of the spike detector 33, which has contact pieces 32, 32' vertically spaced apart from each other at an appropriate distance, are connected to the guide rails 31, 31. . The part detector 33 is fixed by appropriately tightening a butterfly screw 35 whose tip abuts against the lower surface of the guide plate 29 , and has a rod-shaped operating body 34 with a grip near the operating panel 24 and the pilot's seat 24a. Therefore, the culm length can be appropriately detected by pressing down and adjusting the operating body.

In addition, if the degree of lodging of the grain culm is significant or for other reasons it is not appropriate to adjust the handling depth based on the detection signal and it is better to manually adjust the handling depth by visual inspection, the culm length detector 33 By pulling it out, turning it over, and inserting it into the guide rails 31, 31, the culm length detector 33 can push and bend the easily bendable grain culm when manually adjusting the handling depth, and straw waste, weeds, etc. can be prevented from wrapping around the culm length detector. It never sticks.

Next, to explain the case where the handling depth is automatically adjusted, the stalk part of the grain culm cut by the cutting blade 8 is transferred horizontally by the horizontal conveyance belt 9 and delivered to the grain head clamping conveyance belt 15, and then The part side is guided by a curved guide rod 36 installed from the side of the grain culm combing body 10 to the front and above the middle part of the guide rod 17, and also on the receiving guide surface 29. As the stock base and stem are carried further backward, the panicle changes direction and stands up as if being combed up by the steep slope of the ridgeline 29b, and the whole plant leans down and is guided. Immediately after leaning lightly on the surface 29a, the panicle reaches the panicle detector 33 and the stock head detector 33' provided below it.

In this case, the stock head detector 33' always detects the grain culm regardless of its length, and if the length of the grain culm is appropriate, the tip is between the tentacles 32 and 32' of the grain detector 33. In some cases, the control device 37 does not turn on the circuit of the control motor 25, so it remains as it is, but if the grain culm is short and needs to be handled deeply, the tips of the grains
2', the panicle detector 33 detects that it is a short culm, and the control device 37 moves the control motor 25 in a direction in which the rear part of the stock clamping conveyance belt 15 approaches the operation panel 24. When the tip of the tip contacts the lower contact piece 32', the control motor 25 stops.

In addition, if the grain culm is long, the tip of the grain has 3 tentacles.
Both 2 and 32' are in the detection state, and the control device rotates the control motor 25 in the opposite direction to the above-mentioned direction, and moves the lower part of the stock head clamping conveyance belt 15 outward until the tip is located between the tentacles 32 and 33'. The handling depth is automatically adjusted by pushing it towards the direction.

As described above, the present invention provides a combine harvester in which the culm length of the grain culm to be threshed is detected by a plurality of ear side tentacles 32, 32' and stock base tentacle 33' to adjust the handling depth. , at least the panicle-side contact pieces 32, 32' are integrally attached to the panicle detector 33 in a state where they are arranged side by side in the culm direction, and the panicle detector 33 itself can be adjusted and operated in the direction of the culm. Since it is provided so that it can be converted into a posture and a non-working posture, the tip of the ear set by the ear-side tentacles 32, 32' of the ear-side detector 33 is adjusted while the presence or absence of grain culm is detected by the stalk-side tentacle 33'. In addition to being able to accurately detect the appropriate range of position, since it does not detect the magnitude of contact pressure, the pressing force on the tip does not increase and significant delays in tip transfer can be prevented. Since the pieces 32, 32' are integrally attached to the panicle detector 33, when adjusting the movement in the culm direction, the individual pieces 32, 32'
32' are moved separately, the installation interval does not change and can be adjusted integrally while maintaining an appropriate interval, and the same applies when converting between working and non-working positions. They can be converted in one piece, and both operations are easy.

Furthermore, when adjusting the transfer and converting to working and non-working positions, it is necessary to adjust and convert only the ear detector which is an obstacle to the conveyance, so it is necessary to operate the stock detector which does not interfere with the conveyance of the ear. Reasonable adjustments can be made.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a combine harvester to which the present invention is applied;
FIG. 2 is a sectional view of the main part, FIG. 3 is a perspective view of the spike detector, and FIG. 4 is a plan view of the main part. 1... body, 3... threshing device, 7... support frame,
15... Stock head clamping conveyance belt, 18... Panicle side conveyance belt,
19... Bearing tube, 20... Rod, 25... Control motor, 26... Spiral shaft, 29 ... Guide plate, 29
a... leaning guide surface, 29b... ridge line, 29c...
Reception guide surface, 30... Notch, 32, 32'...
Touch piece, 33...detector, 37...control device.

Claims (1)

[Claims] 1. In a combine harvester in which the handling depth is adjusted by detecting the culm length of the grain culm to be threshed by a plurality of ear side tentacles 32, 32' and a stock base tentacle 33', at least the The pieces 32, 32' are integrally attached to the panicle detector 33 in a state where they are arranged side by side in the culm direction, and the panicle detector 33 itself can be moved in the culm direction for adjustment and to have an active position and a non-active position. A handling depth adjustment device for a combine harvester, characterized in that it is provided so as to be convertible to