JPS5845542Y2 - Culm length detection device in combine harvester - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a culm length detection device for a combine harvester that detects the culm length of a shell culm and uses the detection result for adjusting the handling depth, etc.

When detecting the culm length while moving the culm, if the culm is detected while being supported on a guide plate, it can be detected relatively accurately without variation.

However, the amount of culms transferred varies significantly depending on the crop or variety, and when the amount of culms is large, if the sensor facing the guide plate is brought too close to the guide plate, the detector itself will wear out. As the grain becomes a dog, it creates a large amount of resistance against the tip of the shell culm, causing a delay in the transfer of the sugar part, leading to more spike breakage and culm shedding during threshing, and furthermore, weeds etc. get entangled with the detector, reducing the detection function. do.

Furthermore, when the amount of culm is small, if the tactility of the detected amount is too far from the guide plate, a detection error will occur.

The purpose of the present invention is to eliminate the above-mentioned drawbacks.The present invention is designed to house a detector for detecting culm length in a cover, to attach the detector so that it can be moved up and down, and to provide a tactile feel to the detector. 31.31' protrudes downward from the cover and hangs down into the shell culm passage formed on the guide plate, so that its tactility moves up and down within the shell culm passage as the detector is adjusted up and down. It is characterized by having the following configuration.

The present invention will be explained in more detail with reference to the embodiment shown in the drawings below. 1 is a machine body having a traveling device 2, on which a threshing device 3 is mounted, and a reaping device 4 in front.
It is equipped with a hydraulic cylinder interposed between the vehicle and the chassis, allowing it to tilt up and down around a pivot shaft at the rear.

The erect culm is washed up by the culm combing bodies 5, 5 of the reaping device 4, and then cut by the cutting blade 6, and the stem portion thereof is conveyed to the side of the reaping device 4 by the horizontal conveyor 7.

Between the horizontal conveying body 7 of the reaping device 4 and the starting end of the clamping conveying body 3' consisting of the feed chain 8 and the peg rails 9 of the threshing device 3, there is provided an upper end with an axis in the front and back direction. A culm lifting body 12 consisting of a conveying chain 10 that is rotatably supported and can be tilted laterally and a clamping rod 11 is installed to clamp and convey the plant base side, and the panicle side is the stem part. The grain is supplied to the supply port 13 of the threshing device 3 by the lifting body 14 and the guide rod 15 whose base is fixed to the culm combing body 5.

Therefore, the horizontal conveying body 7, the culm lifting body 12, and the clamping conveying body 3'
The conveying path for supplying the shell culm to the threshing device is constituted by the shell culm, and the handling depth is adjusted by tilting the shell culm lifting body 12 and changing the clamping position of the shell culm. There is.

Next, to explain automatic handling depth adjustment, in FIG. horizontal screw pestle 2
0 is connected to a moving ring 23 via a ball 22 pressed by a spring 21, and the moving ring 23 is connected to the control motor 1.
When the rod 24 is moved from side to side by rotation of the screw 9 and the screw 20, the rod 24 is parallel to the screw 20, which is integrated with the moving ring 23.
moves, and the handling depth is adjusted by tilting the shell culm lifting body 12 to the left or right about its upper support shaft.

The control device 16 includes a stem detector 25 attached to the terminal end of the culm lifting body 12, a tip detector 26 attached to the upper part of the supply port 13, and an operation for switching between manual and automatic modes. The tip detector 26 is connected to a changeover switch 27 installed near the panel 28a, and the tip detector 26 is installed at the bottom of an operating knob 29 that can be raised and lowered and installed inside a pulley cover 28. A pair of handles 31 and 31' rotatably attached to a substantially horizontal shaft 30 perpendicular to the shaft of the handling cylinder protruding from the lower end are attached to the pulley cover 2.
It hangs down onto the guide plate 33 from a long hole 32 drilled in the lower surface of 8, and its base faces the contact pieces 34, 34' and has tactile properties 31, 31.
When the tip contacts the tip and rotates, it comes into contact with the contact pieces 34, 34'.

Furthermore, the pulley cover 28 not only covers the pulley of the handling barrel shaft, but also covers operating parts such as the shaft 30 and the contact pieces 34 and 34' that pivot the tactile elements 31 and 31' of the tip detector 26. Since the tip detector 26 is also covered, the structure for mounting the tip detector 26 can be made compact, and the operating portion can be sufficiently protected to ensure smooth and reliable detection operation for a long time.

Further, the upper part of the operation bundle 29 passes through a holding cylinder 36 into a long hole 35 bored in the top plate of the pulley cover 28 in a direction perpendicular to the handling cylinder axis, and the holding cylinder 36 has a long hole in the lower end circumferential surface. It has a soot collar 37 that engages with the lower edge of the pulley cover 35, a tightening nut 38 that engages with the thread on the outer peripheral surface and comes into contact with the upper surface of the pulley cover 28 at the middle part, and a spring 39 at the upper end.
A ball 42 is built in, which is pressed by a bolt 40 and fitted into one of a plurality of holes 41 provided at predetermined intervals on the outer peripheral surface of the operating bundle 29. The installation position of the operation bundle 29 can be changed, and the degree of contact with the sugar part of the shell culm can be adjusted by moving it up and down. When the culm moves on the guide plate 33 and the tip tries to come into contact with the stalks 31 and 31', if it is treated shallowly, it does not touch any of the stalks 31 and 31' (the stalk detector 25 is detected regardless of the culm length), in this case, the control device 16 drives the control motor 19 so that the screw punch 20 moves the lower end of the culm lifting body 12 outward (to the right in FIG. 2). When the ear rotates as shown in FIG.
is rotated in the opposite direction to the above, so that the starting end of the husk culm lifting body 12 grips the reaped husk culm appropriately near the stem part, and the handling depth is automatically adjusted.

When adjusting the handling depth manually, tilt the lever 43 pivoted to the side of the operation panel 28a to the left or right, and the ball 22
moves backward against the spring 21, and the movable ring 23 moves laterally, so that the handling depth can be quickly adjusted within a desired range.

As mentioned above, the present invention houses a detector for detecting the culm length inside the cover, and attaches the detector so that it can be moved up and down, and the tactile parts 31, 31' of the detector are made to protrude downward from the cover. It is suspended in the shell culm passage formed on the guide plate, and its tactility is configured to move up and down within the shell culm passage as the detector is adjusted up and down, so that it is supported by the guide plate and does not vary. The tactility of the detector comes into contact with the tip of the culm from above, which is moving in a stable state, to detect the culm length, which stabilizes the detection accuracy.

In addition, the tactility of the detector moves far and near relative to the guide plate, and the distance between them can be adjusted, so when there is a large amount of shell culm, the above distance can be adjusted according to the amount, and the sugar in the shell culm can be adjusted. It is possible to prevent transport delays and clogging, and to reduce the occurrence of ear breakage and removal during threshing, and to prevent deterioration of the detection function due to entanglement of weeds and the like with the grain.

Furthermore, when the amount of culm is small, by increasing the tactility of the detector closer to the guide plate, the culm length can always be accurately detected without causing a detection error due to the detector being too far away from the guide plate.

Furthermore, since the tactile element hangs down from the hole at the bottom of the cover, it is possible to prevent straw, etc., from entering the operating parts of the detector, such as the pivot and switch parts at the base of the tactile element, which are housed inside the cover. In addition, the cover also contributes to guiding the culm, bringing the culm into smooth guiding contact with the shaft piece, and feeding the culm to the supply port in a well-organized state. I can do it.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, in which Fig. 1 is a perspective view of a combine harvester, Fig. 2 is a sectional view of the handling depth adjustment mechanism, Fig. 3 is a sectional view of the main parts, and Fig. 4 is a perspective view of the same as above. 3... Threshing device, 4... Reaping device, 7
...... Horizontal conveyor, 12... Culm lifting body,
13... Supply port, 16... Control device,
19...iIJ motor, 20...screw pestle, 26...tip detector, 28...pulley cover, 29...operation・Ndol, 31
, 31/-... tactility, 32.35... long hole, 33... guide plate.

Claims (1)

[Scope of utility model registration request] A detector for detecting culm length is housed in the cover, and the detector is mounted so that it can be moved up and down, and the tactility of the detector 31 is adjusted.
, 31' are made to protrude downward from the cover and hang down into the shell culm passage formed on the guide plate, so that their tactile properties move up and down within the shell culm passage as the detector is adjusted to move up and down. A culm length detection device for a combine harvester, characterized by comprising: