JP2519983Y2 - Straw clogging detection device in thresher - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application The present invention relates to a device for detecting straw clogging in a thresher mounted on a combine or a harvester.

(B) Conventional technology Conventionally, a feed chain and a pinch rail are provided outside the handling mouth of the handling room, and the straw discharged from the culm outlet is conveyed to the rear of the handling room by the straw conveying device. In the threshing machine described above, there is already known a device for detecting jamming of straw in a threshing machine, in which a pressure sensitive body and a sensing switch are provided at the end of the straw conveying body to detect jamming of straw.

(C) Problems to be solved by the device Since the straw clogging sensing device in the known threshing machine has the pressure sensitive body and the sensing switch separately attached to the support member, the assembling and dismounting and the pressure sensitive body It was troublesome to adjust the relative position of the sensor switch and.

(D) Means for Solving the Problems The present invention has a feed chain and a clamp rail on the outside of the mouth of the handling room, and discharges the straw discharged from the outlet of the rear of the handling room. In a thresher adapted to be conveyed by a straw conveying device, a clogging sensing device mounted on the straw conveying device is constructed by integrally assembling a pressure sensitive body and a sensing switch to an intermediate support member, While the support member is detachably attached to the straw frame, the clogging sensing device is configured to be adjustable in sensitivity by being attached to the straw frame so as to be vertically adjustable, thereby solving the above-mentioned problems.

(E) Action The grain culm, which is transported by sandwiching the root of the plant with the feed chain and the pinching rail, is subjected to threshing processing by the handling cylinder in the handling room on the ear side, and the straw discharged from the culm outlet is used as a straw conveying device. Sandwiched and conveyed by, and the conveyed straw is processed by a straw processing device such as a cutter or knotter, and when a jam occurs in the straw conveying device or the straw processing device, the straw clogging sensing device detects it. .

Then, in the step of mounting the pressure-sensitive body and the sensing switch on the straw-conveying device, first, the pressure-sensitive body and the sensing switch are integrally assembled to the intermediate support member in a state where the positional relationship between the two is properly set, The intermediate support member is then attached to the straw frame. Therefore, unlike the conventional case in which the pressure sensitive body and the sensing switch are directly attached to the straw-conveying device separately, the relative position adjustment of the both is not troublesome, and the clogging sensing device can be easily used in the straw-conveying device. Be attached to. In addition, if the characteristics of the grain stalk change due to the assembly error of the straw transfer device itself, the difference in the type, etc., adjust the mounting position of the jam sensor to the straw transfer device up or down to correspond to these. The sensitivity is adjusted so that good clogging is always detected.
Moreover, this sensitivity adjustment is performed by adjusting the vertical mounting position of the intermediate support member, in which the pressure sensitive body and the sensing switch are integrally assembled, with respect to the straw frame. Since it is not necessary to change the relative position to the switch or readjust it, the sensitivity can be easily adjusted and the clogging can be detected accurately.

(F) Embodiments An embodiment of the present invention will be described with reference to a lower-side threshing machine mounted on a combine, in which 1 is a handling cylinder which is mounted on a front side plate 3 and a rear side plate 4 of a handling chamber 2 by a handling barrel shaft. Therefore, the blower fan 5 provided below the supply port, the cross-flow fan 6 provided at the rear of the blower fan, and the dust removal fan 7 provided at the rear are a sorting air duct extending from below the handling chamber 2 to the dust sorting chamber 8. In the sorting air passage, a swing sorting body 12 including a first sieve sorting portion 10, a second sieve sorting portion 11 and the like is installed so as to swing back and forth.
A feed chain 13 and a sandwiching rail 14 are provided in the rear of the handling port of the above, and on the other side thereof, a processing cylinder receiving net 15a is provided along the side wall at the rear from the dust delivery port 2a at the rear of the handling chamber 2. The rear side plate 4 is provided with a processing chamber 16 in which the processing cylinder 15 is internally mounted on the shaft.
The straw-conveying device (17) arranged rearward of the culm outlet has a stock carrier (18) made of straw chain and a large number of flexible lugs (19) on the outer circumference.
, And a disc-shaped cutter 22 having a switching plate 21 on the upper surface at the lower end of the stocker carrier 18 and at the rear of the thresher. Is attached, and a knotter 23 is attached to the rear part.

The stock carrier 18 is substantially horizontal on the top plate 8a of the dust sorting chamber 8 as shown in FIG. 1 and extends from the inner end of the feed chain 13 to the ear side as shown in FIG. As shown in FIG. 2, the ear-side carrier 20 is obliquely arranged and is substantially parallel to the ear side of the stock carrier 18 with a space therebetween as shown in FIG. 2, and in a side view as shown in FIG. From the part facing the lower edge of the stock carrier 18
The upper guide rod 24, which is stretched in an upward slope over the part corresponding to the midway part, and which protrudes toward the base of the stock at the lower part of the culm, has a slightly lower rear part and in plan view, As shown in FIG. 2, the tip is inclined slightly outward and the tip is close to the lower part of the leading end traveling portion of the ear side carrier 20.

Further, the bristle side carrier 20 has a lower surface as a carrier surface, and on both sides thereof, guide rods 25 and 26 made of a pair of left and right elastic bodies are provided along a narrow gap as shown in FIG. Bend the front ends of rods 25 and 26 downward to attach the mounting plate 2
7 and the mounting plate 27 is attached to the inner surface of the side plate 28 of the thresher which is inclined obliquely inward and downward, and the ear side guide rod 26 is a guide rod 25 on the root side as shown in FIG. The lower end is horizontal as shown in FIG. 1 and extends to the front part of the disc cutter 22. Reference numeral 29 is a stock supply supply guide rod that guides the stock base of the straw along the feed chain 13 and guides it to the lower surface of the starting end of the stock carrier 18.

Further, the conveyor chain of the stock carrier 18 is stretched around a drive sprocket 31 pivotally supported on the front part of the straw frame 30 and an idler wheel 32 pivotally supported on the rear part thereof to support the straw frame 30 to support frames 33, 3
Drive V supported by 4 and wrapped around the rear part of the ear side carrier 20
The shaft 36 of the pulley 35 is supported via a bearing on a pipe frame 37 which is fixed to the front part rather than the middle part of the straw frame 30, and the frame 39 supporting the floating V pulley 38 is the frame. Arm hanging diagonally inward from frame 30
An input sprocket 43, which is supported on a holder 41 attached to 40 through a spring 42 so as to be able to advance and retract, has an input sprocket 43 attached to the end of the stocker side of the stocker 18, as shown in FIG. It is meshed with the chain roller, the upper part is fixed to the upper part of the bracket 45 rising from the side surface of the straw frame 30 and hung down, and the lower edge is pressed by a pressing plate 46 cut in an arc shape so as not to be disengaged. A U-shaped guide rail 47 that opens downward is fitted to the conveying side of the bristle carrier 20 from above to guide it so that it does not float up due to the conveying pressure, and the outside of the floating V-pulley 38 (stock side). Only for information board
48 is superposed and pivotally supported, the rear end of the scraper 50 having the front end fitted in the groove of the floating V pulley 38 is slidably fitted on the front end of the guide rail 47, and is attached to the pipe frame 37 to drive the V pulley. A guide plate 51 is provided only on the stock root side of 35, and a chain winding prevention plate 49 extending rearward is attached to both sides of the rear end traveling portion of the stock carrier 18, and the shaft of the drive sprocket 31 is As shown in FIG. 2, the bevel gear case 52 and the V-pulley 53 are used to drive the handle barrel shaft, which is not shown in the drawing, but projects rearward from the rear plate 4.

The stock pinching guide rod 55, which is pressed against the chain roller of the stock carrier 18, has its rear end extended to the position immediately before the disc cutter 22 while being fixedly supported by the guide plate 57.
57 is an inclined support rod that is urged upright by a winding spring 58.
It is supported on the top plate 8a of the dust sorting chamber 8 via 59.

The inheritance sensor 60 provided at the starting end of the stock carrier 18 is composed of a switch section 60b and a sensor arm 60c, and the sensor arm 60c is a portion substantially corresponding to the axis of the drive sprocket 31 as shown in FIG. It is bent so as to form a substantially L shape in side view. The forward descending slope portion detects clogging between the feed chain 13 and the stock carrier 18, and the horizontal portion detects clogging of the sandwiching portion. To do.

Thus, the clogging sensing device 61 provided near the terminal end of the stock carrier 18 includes a sensing switch 61a mounted on the outer side of a straw chain guide 64 which is an intermediate support member, and a sensor plate 61b.
The sensor plate 61b has a pair of front and rear pins 63, 63 attached to the upper surface thereof, as shown in FIG. 5, projected onto the outer surface of the straw chain guide 64 via the links 65, 65 in the forward tilted posture. A pair of front and rear support pins 66, 66 provided so as to swing up and down and back and forth, and a vertical cutout groove (or elongated hole) 64a formed in the straw chain guide 64 in the straw frame 30.
A tension spring which is fitted to a pin 30a protruding from the outer side surface of the link and screwed so as to be adjustable in the vertical direction, and which has a gentle inclination from the link 65 between the pin 63 on the front side and the pin on the diagonally upper front side.
Since it is urged downward by 67, and the inclined portion at the front end is received by the stopper 67a that is inclined upward toward the front,
Standby at a predetermined height, the rising resistance of the sensor plate 61b becomes maximum in that state, and becomes smaller gradually as it rises, so that the sensor plate 61b is difficult to rise in a normal transport state, but when jam occurs and rises The rising resistance decreases and the sensing sensitivity improves.

The straw processing sensor 62 has a base fixed to the rear end of the sensor plate 61b, directed toward the rear surface of the chain winding prevention plate 49 in a plan view, and bent so as to be slightly lowered in a side view. When the feeding portion of the disc-type cutter 22 or the scraping rotary member 68 of the knotter 23 is clogged, the jammed straw is scraped up in the process of the conveyor chain moving upward at the terminal end. The straw processing sensing unit 62 rises together with the sensor plate 61b, so that the sensing switch 61a senses and operates. The sensing switch 61a is used for both clogging detection of the stock carrier 18 and clogging of the straw processing device, and the straw processing sensing unit 62 and the sensor plate serve as a pressure sensitive body of the clogging sensing device 61. I am configuring.

In the above-mentioned under-treatment type threshing machine, the root portion of the threshing-treated straw is inherited from the end of the feed chain 13 to the beginning of the stock carrier 18 while being supported by the stock supply guide rod 29, and the culms are discharged. The ear part side discharged from the mouth is pressed by the upper guide rod 24 in the direction intersecting the ear side carrier 20 to prevent it from bidding on the ear side carrier 20 and preventing the ear side guide rod 26 from moving up. It is guided through the upper part of the starting end and is also guided by the rising part of the starting ends of the guide rods 25 and 26, and is supplied to the starting end of the ear side carrier 20.

At that time, the ear part side of the straw is discharged due to the threshing resistance of the handling cylinder 1 and is pushed down, but the guide rod 26 on the ear side is lower than the guide rod 25 on the stocker side. Scooped up comfortably, the ear side carrier 20 is a stock carrier due to the diameter difference between the input sprocket 43 and the drive V pulley 35.
While being transported backwards at a speed higher than 18, the transportation delay and height difference are corrected during transportation, resulting in a neat horizontal posture. During this transportation, the stock carrier 18 and the ear-side carrier 20 are parallel in a plan view, but the intervals become gradually narrower as they move rearward in a side view. The leaves branching and extending from the ear toward the ear tend 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 48 and 51 prevent it, and guide them. The rods 25, 26 support and guide the straw along both sides of the ear side carrier 20 without difficulty and allow the turning by the speed difference, and at the end of the ear side carrier 20, the ear side is slightly ahead. The guide rod 25,2
It is supported and guided by 6, and the stock section is a disk type cutter 22
Is forcibly transported by the stock carrier 18 to the upper part of.

In this way, when cutting the discharged straw, the switching plate
When 21 is rotated upward to open the supply port, the straw is supplied to the disc cutter 22 and shredded.
In the case of bundling, when the switching plate 21 is rotated downward to close the supply port of the disc type cutter 22, the straw is discharged rearward through the disc type cutter 22, and the swab 68 is rotated.
Scratches toward the knotter 23, and the knotter 23 bundles and releases it.

When performing such threshing treatment and straw treatment,
When a clogging occurs between the end of the feed chain 13 and the start of the stock carrier 18, the sensor arm 60c rotates counterclockwise about its base because the descending slope of the front part of the sensor arm 60c is pushed backward. Then, the switch 60b is pressed to turn it on, and the grain culm is pulled out together with the stock during mowing in a wet field, etc., and the root stock with a lump of mud is carried and the starting end of the stock carrier 18 is transferred. When the part is clogged, the horizontal part of the sensor arm 60c is pushed up and the switch part 60b is turned on.

Further, when a jam occurs behind the intermediate portion, the sensor plate 61b is pushed up against the tension spring 67, and the sensing switch 61a senses it.

Further, the supply portion of the disc type cutter 22 or the knotter 23
When a jam occurs in the scraping part of the conveyor, the conveyor chain scrapes up the jammed straw at the terminal traveling part, so that the straw processing sensing unit 62 is pushed up, and the sensor plate 61b rises, and the sensing switch 61a senses it. It activates, which triggers an alarm or shuts down the engine.

When the clogging sensing device 61 is assembled, the sensing switch 61 is previously attached to the straw chain guide 64, that is, the intermediate support member.
a, the sensor plate 61b, the links 65 and 65, and the tension spring 67 in the assembled state, which is attached to the straw frame 30, and the sensitivity adjustment is performed by the clogging sensing device 61 which is paired as described above.
By moving it up and down and tightening it with a screw.

(G) Effect of the Invention The present invention has the following effects due to the above-described configuration.

Before mounting the pressure sensitive body and the sensing switch 61a on the intermediate support member in advance without separately mounting the pressure sensitive body and the sensing switch on the straw discharge device, the intermediate support member is discharged. By attaching to the frame 30, a clogging detection device
The 61 can be easily attached to the straw conveying device 17.

Further, as described above, by previously assembling the pressure sensitive body and the sensing switch 61a to the intermediate support member, the relative positions of the both can be set easily and reliably.

By attaching an intermediate support member, in which the pressure sensitive body and the sensing switch 61a are assembled, to the straw frame 30 so as to be adjustable in the vertical direction, the characteristics of the grain stem due to the assembly error of the straw conveyor device 17, the difference in the variety, etc. The sensitivity of the clogging detection device 61 can be adjusted according to the change, and good clogging detection can be performed.

Moreover, since the sensitivity adjustment is performed by adjusting the vertical mounting position of the intermediate support member with respect to the straw frame 30, the relative position between the pressure-sensitive body and the sensing switch 61a is changed or readjusted each time the sensitivity is adjusted. It is possible to easily adjust the sensitivity and improve the clogging detection accuracy without needing to do so.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a vertical sectional view of a lowering type threshing machine, FIG. 2 is a plan view of the same as above, and FIG. 3 is a plan view of a straw conveying device. FIG. 4 is a side view of the same, FIG. 5 (a) is an exploded perspective view of a rear clogging detector, FIG. 4 (b) is a transverse sectional view of the same, and FIG. FIG. 7 (b) is a transverse sectional view of the same as above, and FIG. 7 is a transverse sectional view of the straw inheritance portion. 2 …… Handling room, 13 …… Feed chain, 14 …… Clamping rail, 18 …… Stock source carrier, 20 …… Bear side carrier, 22 …… Disk cutter, 23 …… Knotter, 24 …… Upper guide rod, 2
5,26 …… Guide rod, 31 …… Drive sprocket, 35 …… Drive V pulley, 59 …… Inclined support rod, 60 …… Sending sensor,
61 …… Clogging sensor, 61a …… Sensing switch, 61b …… Sensor plate, 64 …… Straw chain guide, 65 …… Link, 67 …… Tension spring

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-2-34133 (JP, A) Actually opened 55-42980 (JP, U) Actually opened 52-168863 (JP, U)

Claims (1)

(57) [Scope of utility model registration request] 1. A feed chain 13 and a sandwiching rail 14 are provided outside the handling opening of the handling room 2, and the straw discharged from the outlet of the rear part of the handling room 2 is conveyed by an straw conveying device 17. In the threshing machine configured to do so, the clogging sensing device 61 mounted on the straw conveying device 17 is configured by integrally assembling the pressure sensitive body and the sensing switch 61a to the intermediate supporting member, and the intermediate supporting member. Is removable from the straw frame 30, while the jam sensing device 61 is configured to be vertically adjustable by being attached to the straw frame 30 so that the sensitivity can be adjusted. .