JPH03262415A - Sensor for waste straw choking in combine - Google Patents

Abstract

PURPOSE:To surely sense the choking in a waste straw feeding part for a cutter, waste straw raking in part for a knotter or binding part by constructing a pressure-sensitive unit of a choking sensor provided on the back end side of a plant foot conveying unit in a waste straw conveyor from a member extending within a specific region. CONSTITUTION:A choking sensor 61 provided on the back end side of a plant foot conveying unit 18 in a waste straw conveyor is constructed from a sensing switch (61a) and a sensor plate (61b) and the sensor plate is installed so as to extend from the upper part of a cutting part of a cutter onto a feeding part for a knotter.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a waste straw clogging detection device in a self-removing combine harvester equipped with at least a cutter and a knotter as a waste straw processing device.

(B) Prior art Conventionally, a feed chain and a pinch rail were installed outside the handling opening of the handling room, and the waste straw discharged from the culm opening was transferred to the rear of the handling room by a waste straw having a stock head side conveyor. Conveyed by straw conveying device,
It is already known that in a combine harvester that shreds or bundles the transported waste straw by selecting either a cutter or a knotter arranged in the front and rear, a clogging detection device is attached to the waste straw conveyance device6 ( C) Problems to be Solved by the Invention Although the above known combine harvester was able to detect clogging in the straw removal conveying device, it could detect clogging in the cutter supply section, between the cutter and the knotter, in the notter scraping section, or It was not possible to detect any clogging at the binding part of the knotter.

Furthermore, if it is attempted to detect clogging in the cutter supply section, the scraping section between the cutter and the knotter, or the knotter binding section, a large number of clogging detection devices are required and the installation structure thereof becomes complicated.

(d) Means for solving the problem The present invention provides a feed chain and a pinching rail outside the handling opening of the threshing device, and transports the waste straw discharged from the culm opening at the rear of the handling room. In a harvesting machine, the straw is conveyed by a straw transporting device having a stock conveyor with clamping rails arranged oppositely on the conveyance surface of a chain, and the transported waste straw is processed by cutters or knotters installed at the front and rear. A clogging sensing device is provided on the terminal end side of the conveyor, and the pressure sensitive body of the clogging sensing device is composed of a series of members extending from above the cutting section of the cutter to above the supplying section of the knotter. If a blockage occurs in either the scraping part between the knotter or the binding part of the knotter, it can be detected by the pressure-sensitive operation of a single pressure-sensitive element, thereby solving the above-mentioned problem. Settled.

(e) The culm, which is conveyed with the working plant base held between the feed chain and the pinch rail, is threshed on the panicle side by the handling barrel in the handling room.
The waste straw whose ear side is discharged from the culm outlet is transferred to the starting end of the waste straw conveyance device, where it is conveyed in a pinched manner, and when it is intended to be shredded, it is fed to a cutter to be cut and bundled. are not fed to the cutter, but are further conveyed to the rear, bound by a knotter, and discharged.

If a blockage occurs in the feed section of the cutter during such straw removal processing, the sensing device is activated to detect the clogged and accumulated waste straw on the front side of the pressure sensitive body, and also detects the clogged and accumulated waste straw on the front side of the pressure sensitive body. If a blockage occurs, the system detects the clogged straw on the rear side and automatically or manually stops the engine based on these detection signals, or automatically or manually disengages the appropriate clutch. By doing so, the straw removal device, power supply, turnter, and knotter are stopped to eliminate the above-mentioned blockage.

(F) Embodiment To explain a lower-class threshing machine in which an embodiment of the present invention is mounted on a combine harvester, 1 indicates a front side plate 3 and a rear side plate 4 of a handling chamber 2.
The handling cylinder is mounted on a handling cylinder shaft, and includes a blower wind turbine 5 installed below the supply port, and a cross-flow fan 6 installed behind it.
The dust exhaust fan 7 provided at the rear constitutes a sorting air path extending from the bottom of the handling chamber 2 to the dust sorting room 8, and the sorting air path includes a first sieve sorting section 10 and a second sieve sorting section 11. A swinging sorting body 12 is installed so as to swing back and forth, and behind the handling opening of the handling chamber 2, a feed chain 13 and a pinching rail 14 are installed oppositely, and on the opposite side. A processing chamber 16 is disposed along the rear side wall from the dust inlet 2a at the rear of the processing chamber 2, has a processing cylinder receiving net 15a, and has a processing cylinder 15 mounted on a shaft. The straw removal conveyance device 17 arranged at the rear is composed of a stock conveyor 18 made of a straw removal chain and an ear side conveyor 20 made of a conveyor belt having a large number of flexible lugs 19 on the outer periphery. and stock carrier 1
A disk-shaped cutter 22 having a switching plate 21 on the upper surface is attached to the lower part of the terminal end of the thresher 8 and the rear of the threshing machine, and a knotter 23 is attached to the rear of the disk-shaped cutter 22.

The stock carrier 18 is the top plate 8a of the dust sorting chamber 8.
The feed chain 13 is provided substantially horizontally as shown in FIG. 1, and diagonally from the inside end of the feed chain 13 to the panicle side as shown in FIG. It is approximately parallel to the panicle side of the stock head conveyor 18 at an interval, and corresponds to the midway part of the stock head conveyor 18 from the part facing the lower edge of the culm opening as shown in FIG. 1 when viewed from the side. The industrial internal rod 24, which protrudes from the base of the plant at the top of the culm, is slightly lower at the rear, as shown in Figure 2 in plan view. The tip is inclined slightly outward as shown in FIG.

Further, the panicle side conveyor 20 has its lower side as a conveyance surface, and on both sides thereof, as shown in FIG. The front ends of the rods 25 and 26 are bent downward and fixed to the mounting plate 27, and the mounting plate 27 is attached to the inner surface of the side plate 28 of the threshing machine which is slanted diagonally inward and downward. As shown in FIG. 4, the guide rod 26 is lower than the guide rod 25 on the stock base side, and its rear end is horizontal as shown in FIG. Reference numeral 29 denotes a stock supply guide rod that supports the stock part of the waste straw and guides it to the lower surface of the starting end of the stock transport body 18.

In addition, the conveyance chain of the stock conveyor 18 is a straw removal frame 30.
The straw removal frame 30 is supported by support frames 33 and 34, and the rear part of the ear-side conveyor 20 is wrapped around The shaft 36 of the drive V-pulley 35 is supported via a bearing on a pipe frame 37 which is fixed slightly toward the front of the straw removal frame 3o, and the frame 39 which pivotally supports the floating V-pulley 38 is A holder 41 attached to an arm 40 hanging diagonally inward from the straw removal frame 30 is supported by a spring 42 so as to be movable back and forth. As shown in FIG. 6, a holding plate is engaged with the chain roller of the stock conveyor 18, its upper part is fixed to the upper part of the bracket 45 rising from the side of the straw removal frame 30, and the lower edge is cut in an arc shape. 46 so as not to disengage, and a U-shaped guide rail 47 with a downward opening is fitted from above on the conveyance side of the panicle side conveyor 20 to guide it so as not to lift up due to conveyance pressure. , a guide plate 48 is overlaid and pivotally supported only on the outside (stock side) of the floating V pulley 38, and the front end is attached to the floating V pulley 38.
The rear part of the scraper 50 fitted into the groove is slidably fitted to the front end of the guide rail 47, and is attached to the pipe frame 37, and the guide plate 51 is aligned only on the stock side of the drive V-boo 9-35. Chain wrapping prevention plates 49 extending rearward are attached to both sides of the rear end rotating portion of the stock carrier 18, and the shaft of the driving sprocket 31 is connected to a bevel gear case 52, a V pulley 53, etc. as shown in FIG. Although not shown in the drawings, it is driven by a handling barrel shaft that protrudes rearward from the rear side plate 4.

The stock head holding guide rod 55, which is pressed against the chain roller of the stock base conveyor 18, is fixedly supported by a guide plate 57, and its rear end extends to just before the disc-shaped cutter 22. It is supported on the top plate 8a of the dust sorting chamber 8 via an inclined support rod 59 that is biased upward by a winding spring 58.

The transfer section sensor 60 provided at the starting end of the stock carrier 18 consists of a switch section 60b and a sensor arm 60c, and the sensor arm 60c is located at a portion approximately corresponding to the axis of the drive sprocket 31 as shown in FIG. It is bent to form an abbreviated shape when viewed from the side, and the descending slope section at the front detects a blockage between the feed chain 13 and the stock carrier 18, and the horizontal section detects a blockage at the nipping section. do. Furthermore, when a large bundle of straw is fed and threshed, the large bundle of straw is compressed around the drive sprocket 31 with the stock end tied together and does not touch the sensor arm 60c.

The rear clogging detection device 61 is a detection switch 61a attached to the outside of the rear part of the straw removal chain guide 64, and the cutting part of the disc cutter 22 (the intersection of the front and rear disc blades when viewed from the side).
The rear end of the cutter and the stock base conveyor 18 from the front and above.
The sensor plate 61b has a pair of front and rear bins 63.63 attached to its upper surface, as shown in FIG. Straw removal chain guide 6
Straw removal chain guide 6
The notched grooves 64a formed in the straw removal frame 30 are fitted into the bins 30a protruding from the outer surface of the straw removal frame 30, and screwed onto the bins 30a so that they can be adjusted up and down. Since the sensor plate 61b is biased downward by the spring 67 and received by the stopper 67a, the upward resistance of the sensor plate 61b is relatively large in the downward posture, but becomes smaller as it rises, and as a result, the sensor plate 61b is not in the normal conveyance state. Although it is difficult to rise, it is easy to detect when a blockage occurs and rises. The stopper 67a is constructed of a plate that is inclined so that the front part is high and the rear part is gradually lower, so that it prevents the straw from getting entangled with the sensor plate 61b.

In addition, the straw disposal sensing section 62 has its base connected to the sensor plate 6.
1b, and bend it so that it faces the rear surface of the chain wrapping prevention plate 49 in plan view, and slightly descends in side view, and enters between the left and right scraping rotors 68° 68 (first and Fig. 2), and if the supply part of the disc-shaped cutter 22, the scraping part formed by the scraping rotary bodies 68, 68, or the binding part of the knotter 23 becomes clogged, the clogged discharge For straw, the straw waste processing sensing section 62 is connected to the sensor plate 61b.
As a result, the sensing switch 61a senses and operates. Further, since the straw removal processing sensing section 62 surrounds the terminal end of the stock source conveyor 18 in plan view, it is also possible to detect the winding up of straw. The sensor plate 61b and the straw disposal sensing section 62 constitute an integrated pressure sensitive body, and the sensing switch 61a is used both for detecting clogging in the stock carrier 18 and for detecting clogging in the straw disposal device. The Rukoto.

In the above-mentioned lower-class threshing machine, the stock part of the threshed straw is transferred from the end of the feed chain I3 to the starting end of the stock transport body 18 while being supported by the stock supply guide rod 29,
The top surface of the panicle discharged from the culm is held down by the industrial internal rod 24 in the direction that intersects with the panicle transporter 20.
The guide rod 25 is guided through the upper part of the starting end of the guide rod 26 on the ear side while preventing it from climbing up to the top.
．． It is also guided by the rising part of the starting end of the ear-side conveyor 26 and is supplied to the starting end of the panicle-side conveyor 20 .

At this time, the measurement of the ears of straw is delayed due to the threshing resistance of the handling barrel l, and the straw is discharged in a depressed position, but the guide rod 26 on the ear side is lower than the guide rod 25 on the stock side. The ear-side carrier 20 is scooped up easily, and due to the difference in diameter between the input sprocket 43 and the drive V-pulley 35, the ear-side carrier 20 is lifted while being carried backwards at a higher speed than the stock carrier 18, and there is no transfer delay or delay during the transfer. The height difference is corrected and the horizontal posture becomes orderly. During this transportation, the stock head conveyor 18 and the ear side transport body 20 are parallel in plan view, but when viewed from the side, the interval becomes narrower as they move toward the rear. The leaves branching out toward the panicle side try to be pushed between the floating V pulley 38 and the driving V pulley 35 and the V belt, but the front and rear guide plates 4
8 and 51 prevent this, and the guide rods 25 and 26 support and guide the straw effortlessly along both sides of the ear side conveyor 20 and allow rotation due to the speed difference.
At the end of the cutter 22, the ear side is slightly ahead, and in the subsequent conveyance process, the ear side is supported and guided by the guide rods 25 and 26, and the stock head is forcibly conveyed to the top of the disc-shaped cutter 22 by the stock head conveyor 18. be done.

When cutting the waste straw sent later in this way, the switching plate 2
When the straw is rotated upward to open the supply port, the waste straw is fed to the disc-shaped cutter 22 and shredded, and when it is to be bundled, the switching plate 21 is rotated downward and the straw is cut into pieces by the disc-shaped cutter 22. When the supply port 22 is closed, the waste straw passes over the disc-shaped cutter 22 and is discharged backward, and the scraping rotary body 68 scrapes it toward the knotter 23, which collects it and bundles and discharges it. do.

During such threshing processing and straw removal processing, if a blockage occurs between the end of the feed chain 13 and the starting end of the stock head conveyor 18, the sensor arm 60c will cause the downward slope of the front part to As it is pushed backward, rotate counterclockwise around its base and press the switch part 60b to turn it on.
Also, if the culm is pulled out along with the plant during reaping in a wet field, etc., and the root stock with a lump of mud is transported and clogged at the starting end of the plant base conveyor 18, the sensor arm 60c The horizontal portion of is pushed up and the switch portion 60b is turned on.

In addition, if a blockage occurs at the rear of the middle part of the stock transport body 18, the sensor plate 61b is pushed up against the tension spring 67, and the sensor plate 61b is pushed up against the tension spring 67, and the sensor plate 61b is pushed up against the tension spring 67.
senses.

Therefore, if a blockage occurs in the supply section of the disc-shaped cutter 22 or the scraping section of the knotter 23, the pressure of the accumulated waste straw or the conveyance chain scraping up the clogged straw in the terminal circulation section may cause the clogging to occur. The straw disposal sensing section 62 is pushed up,
At that time, the sensor plate 61b is activated by the straw disposal sensing section 62.
The sensor switch 61a senses and operates, and the detection signal issues an alarm, stops the engine, or connects a clutch installed in the transmission system of the waste straw processing device and waste straw conveyance device. automatically or manually to remove clogged waste straw before it becomes clogged or excessive.

(g) Effects of the Invention As described above, the present invention includes a feed chain 13 and a pinching rail 14 on the outside of the handling opening of the threshing device, and the straw discharged from the culm opening at the rear of the handling chamber 2 is In the harvesting machine, the straw is transported by a straw transporting device having a stock conveyor 18 with clamping rails arranged oppositely on the transport surface of the transport chain, and the transported straw is processed by cutters or knotters installed in the front and rear. A clogging sensing device 61 is provided on the terminal end side of the stock carrier 18, and the pressure sensitive body of the clogging sensing device 61 is constituted by a series of members extending from above the cutting section of the cutter to above the supply section of the knotter 23. Straw supply section to the knotter 23
Even if a blockage occurs in either the straw raking section or the binding section of the knotter 23, the single blockage detection device can reliably detect the blockage.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, in which Fig. 1 is a longitudinal sectional view of a lower-class threshing machine, Fig. 2 is a plan view of the same, Fig. 3 is a plan view of a straw conveying device, and Fig. 4 is a plan view of the straw conveying device. The figure is a side view of the same as above, FIG. 5 [a] is an exploded perspective view of the rear clogging detector, FIG. fb) is a cross-sectional view of the same as above, and FIG. 7 is a cross-sectional view of the straw receiving part. 2. Handling room, 13. Feed chain, 14 pinching rail, 18. Stock head conveyor, 20. Ear side conveyor, 22.
Disk type cutter, 23 knotter, 24...1 guide rod, 25.26...guide rod, 31...drive sprocket, 35...drive V pulley, 59...inclined support rod, 60
・・Inheritance part sensor, 61・・Clogging sensor, 61a・・Detection switch, 61b・・Sensor plate, 62・・・Straw disposal sensing part

Claims (1)

[Claims] A feed chain 13 and a pinching rail 14 are installed on the outside of the handling opening of the threshing device, and the straw discharged from the culm opening at the rear of the handling chamber 2 is transferred to a stock with pinching rails arranged opposite to the conveying surface of the conveying chain. In a harvesting machine, the straw is transported by a waste straw transport device having a former transport body 18, and the transported waste straw is processed by cutters or knotters installed in front and rear.
A clogging sensing device 61 is provided at the terminal end of the cutter 8, and the pressure sensitive body of the clogging sensing device 61 is inserted into the knotter 23 from above the cutting portion of the cutter.
1. A straw discharge clogging detection device for a combine harvester, characterized in that it is constructed of a series of members extending over a supply section.