JPH05304818A - Clogging detector of thresher - Google Patents

Abstract

PURPOSE:To surely detect clogging state of receiving net. CONSTITUTION:The objective clogging detector is equipped with a threshing chamber A providing a receiving net 22 for dropping the treated material down from the starting end side to the final end side and forming an opening part 15 for discharging the treated material at the final end side, an oscillating selection plate 19 arranged under the threshing chamber A, a judging means 100 for judging clogging state of the receiving net 22 and plural layer thickness- detecting means (the first and second layer thickness sensors) S4 and S5 for detecting the layer thickness of the treated material existing on the oscillating selection plate 19. These layer thickness detecting means S4 and S5 are equipped with each at least one at a place at front side and a place at the rear side than rear end part position of the receiving net 22 in the transfer direction of the treated material. The judging means 100 judges that the receiving net 22 is kept in clogging state when the layer thickness in the place at the rear side is thicker than the layer thickness in the place at the front side, based on the information of these plural layer thickness detecting means S4 and S5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handling chamber provided with a net for leakage of processed material from a starting end side to an end side, and an opening for discharging the processed material formed on the end side. The present invention relates to a clogging detection device for a threshing device, which is provided with an oscillating sorting plate disposed below the handling chamber and a determination means for determining a clogging state of the receiving net.

[0002]

2. Description of the Related Art In the above threshing device, when the cut grain culm is threshed in the handling room and the net for leaking the processed product to the sorting device is clogged, the processed product is clogged. Cannot be leaked from the receiving net, and the processed product which cannot be leaked is transferred to the end side of the handling chamber and dropped from the processed product discharging opening formed therein. As a result, the recovery amount of the first product decreases and the sorting capacity decreases, the recovery amount of the second product becomes too large, and the so-called third loss, in which grains are mixed with straw waste and released outside the machine. This is an unfavorable state in which the amount also increases. Therefore, conventionally, in the clogging detection device of the threshing device, in order to prevent the receiving net clogging early and avoid the above state from continuing, for example, a transmission type photoelectric sensor is attached to the mesh portion of the receiving net, and this photoelectric When the signal from the sensor changes to the ON state or the OFF state, it is not the clogging state, but if the OFF state continues, it is determined to be the clogging state.

[0003]

However, in the above-mentioned conventional means, since it is difficult to install photoelectric sensors in all of a large number of mesh parts, only a plurality of photoelectric sensors are provided at appropriate places, and the reliability of detection is improved. There was a problem that was low.

The present invention has been made in view of the above circumstances, and an object thereof is to obtain a clogging detection device for a threshing device that can solve the above problems and reliably detect a clogging state of a receiving net. is there.

[0005]

A characteristic configuration of a clogging detecting device of a threshing device of the present invention is that a plurality of layer thickness detecting means for detecting a layer thickness of a processed object existing on the rocking sorting plate, At least one is provided at each of the front side position and the rear side position with respect to the rear end position of the receiving net in the processed material transfer direction,
The determining means determines that the net is clogged when the layer thickness at the rear side portion is thicker than the layer thickness at the front side portion based on the information of the plurality of layer thickness detecting means. There is a point to do.

[0006]

According to the characteristic constitution of the present invention, when the treated net is not clogged and the processed material is leaking normally, the layer thickness at the lower side thereof, that is, the rear end portion position of the net is lower than that. The layer thickness at the front side portion is thicker than the layer thickness at the rear side portion than at the rear end position of the receiving net. Therefore, when the layer thickness at the rear side portion is thicker than the layer thickness at the front side portion, it is judged that the net is clogged.

[0007]

Therefore, according to the characterizing feature of the present invention, the clogging is detected based on the layer thickness of the rocking sorting plate which changes with the clogging of a part and the whole of the receiving net, so that the detection reliability can be improved. It is possible to obtain an excellent clogging detection device for a sorting device.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a threshing device mounted on a combine will be described below with reference to the drawings.

The self-removing combine shown in FIG. 2 includes a pair of left and right crawler traveling devices 1, a threshing device 2, a control section 3, a cutting section 4, and the like. The cutting unit 4 includes a weeding tool 5, a planting grain culm raising device 6, and a cutting blade 7, and the cut grain culm is fed by a conveying device 9 to a feed chain 16 of the threshing device 2.
Be transported to. Further, a stock origin sensor S1 for detecting whether or not grain culm is supplied is provided at the tip of the transport device 9. Then, as shown in FIG. 3, the power from the engine E is transmitted to the threshing device 2 via the threshing clutch 10 and the crawler traveling device via the traveling clutch 11 and the hydraulic continuously variable transmission 12. 1 is transmitted to the mission unit 13, and the power thereof is further transmitted to the harvesting unit 4 via the harvesting clutch 14. In order to detect whether or not the threshing device 2 is in operation, the threshing clutch 10 is provided with a threshing switch SW1 for detecting the on / off state thereof.

As shown in FIGS. 4 and 5, the threshing device 2 accommodates the handling cylinder 8 and a receiving net 22 for leaking processed material from the starting end side to the terminating end side thereof on the lower side thereof, In addition, a handling room A having an opening 15 for discharging the processed material on the end side, a feed chain 16 for supplying the grain culm supplied from the cutting section 4 to the handling room A, and a horizontal axial fan for dust removal. 1
7. A sorting device B including a swinging sorting plate 19 and a tomi 18 arranged below the handling chamber A for sorting the processed products after threshing, and for collecting the processed products after the sorting. It has a first mouth 20 and a second mouth 21. The receiving net 22 is provided along the lower outer peripheral portion of the handling cylinder 8, and the single-grained grains of the processed product after threshing are swung from the receiving net 22 to the swing selection plate 1
On the other hand, the processed material which has not leaked from the receiving net 22 while falling down to 9 falls from the rear end portion of the receiving net 22 through the opening 15 and onto the swing selection plate 19.

The rocking sorting plate 19 includes a Glen pan 27, a chaff sheave 24, and a Straw rack 23, which are arranged so as to be sequentially arranged from the front to the rear, and leaks from the chaff sheave 24, and further, the Glen sheave. The grain leaked from 25 is collected from the first port 20 and stored in a tank or the like. After the mixture of the grains and the straw waste that has fallen from the rear end of the chaff sheave 24 or the rear end of the Glen sieve 25 is collected from the second opening 21, the rear end portion of the handling chamber A is recovered by a screw type second material reducing device 26. It is conveyed upward to the lateral side position, blown to the front side by the rotary plate 40 that is installed in the discharge port 28 provided at the tip end thereof and rotates around the axis of the vertical axis, and drops to the front side position of the swing selection plate 19. To do.

As shown in FIGS. 4 and 5, the swing selection plate 1
A layer thickness detecting means for detecting the layer thickness of the processed material present on the first layer thickness sensor S4 installed on the front side of the rear end position of the receiving net 22 in the processed material transfer direction.
And a second layer thickness sensor S5 provided at a position rearward of the position of the rear end of the receiving net 22. The first layer thickness sensor S4 is attached to the bow 39 fixed to the lower side of the receiving net 22, and the second layer thickness sensor S5 is attached to the mounting arm fixed to the swing selection plate 19. Has been. The layer thickness sensors S4 and S5 are shown in FIG.
As shown in FIG. 5, the sensor bar T hangs swingably around the horizontal axis, and the potentiometer PM has a resistance value that changes according to the rearward rotation angle of the sensor bar T (processed material transfer direction). .. The sensor bar T is formed in a bifurcated shape in which the downstream portion T1 in the processed material transfer direction is longer than the upstream portion T2, whereby the downstream portion T1 when the processed material layer is thin.
Is in contact with the object to be processed, and the upstream portion T2 is in contact with the object to be processed when the layer thickness increases. Then, as the layer thickness of the object to be processed becomes thicker, the rotation angle of the sensor bar T becomes larger and the resistance value of the potentiometer PM increases, and a signal voltage corresponding to the resistance value is input to the control device H described later. ..

As shown in FIG. 7, the chaff sheave 24 has a plurality of strip plate members 24a juxtaposed in the processed product transfer direction (right direction in the drawing) rotatably attached to the left and right side plates. Then, the angle of the strip plate member 24a is simultaneously changed by pushing and pulling the operation rod 30 pivotally attached to the lower end portion of each strip plate member 24a in the front-rear direction. As a result, the distance d (hereinafter referred to as a chaff sheave opening) between adjacent members is changed while maintaining the parallelism of the strip plate members 24a.

A sheave motor M1 for changing and adjusting the chaff sheave opening is provided, and a gear type linkage mechanism 3 is provided.
1, the swing arm 32, and the release wire 33 are connected to the operation rod 30. Then, by changing the polarity of the applied voltage and rotating the sheave motor M1 in the forward and reverse directions, the chaff sheave opening can be opened or closed. Further, a potentiometer-type chaff sheave opening sensor S2 for detecting the chaff sheave opening from the rotation angle of the swing arm 32 is provided.
Reference numeral 29 is a spring for urging the chaff sheave 24 to return to the closing side.

The toumi 18 is used to blow off the straw chips on the swing selection plate 19, and the wind force thereof is, as shown in FIG. 8, the opening of the fan case cover 18a (hereinafter referred to as "opening").
This is done by changing the Toumi exhaust opening. That is, as the opening degree of the exhaust air of Toumi increases, the amount of air escaping from the opening increases, and the wind force that blows off the processed material on the swing selection plate 19 (hereinafter, referred to as the Tumi wind force) decreases.

The TOMI exhaust air opening is adjusted by the TOMI motor M.
When the polarity of the applied voltage is changed to rotate in the forward and reverse directions, the fan case cover 18a is opened and closed via the linkage mechanism 34, the swing arm 35, and the rods 36 and 37. In the figure, S3 is a potentiometer-type exhaust air outlet sensor for detecting the exhaust air outlet opening degree from the rotation angle of the swing arm 35.

As shown in FIG. 1, a control device H using a microcomputer is provided, and the control device H includes the stock sensor S1, the chaff sheave opening sensor S2, the toumi exhaust air opening sensor S3, and First layer thickness sensor S
4, the second layer thickness sensor S5 and the threshing switch SW
Each signal from 1 is input. Also, the control device H
From the sheave motor M1 and the toumi motor M
2 is output, and a signal is output to the monitor 34 including the alarm lamp 34a, the alarm buzzer 34b and the character display 34c.

Further, the control device H includes a swing selection plate 19
A voltage signal from the threshing control control volume VR for manually setting the target layer thickness of the above-mentioned processed material is input, and as shown in FIG. 9, the target layer thickness is set thicker as the voltage is higher. ing. In this way, when the target layer thickness is set to be thin to reduce the loss of grains due to third crops, etc., or the target layer thickness is set to be thick to reduce the mixing of straw debris into the first product. When the sorting accuracy is to be improved, etc., it can be appropriately selected by judging from the crop conditions and the like.

Then, the control device H is used to constitute a discriminating means 100 for discriminating the clogging state of the receiving net 22, and the discriminating means 100 is constituted by the first layer thickness sensor S4 and the second layer thickness sensor S4. Based on the detection information of the layer thickness sensor S5, the layer thickness of the rear side portion in the processed material transfer direction detected by the second layer thickness sensor S5 is the processed material transfer direction detected by the first layer thickness sensor S4. Is thicker than the layer thickness of the front side portion of
Is configured to be determined to be clogged.

The control unit H drives the sheave motor M1 and the toumi motor M2 so that the layer thickness X detected by the first layer thickness sensor S4 becomes the set target layer thickness. That is, if the detection layer thickness X is larger than the target layer thickness, the chaff sheave opening is adjusted to the open side and the toumi exhaust air opening is adjusted to the small side, while if the detection layer thickness X is smaller than the target layer thickness, It is configured to adjust the opening to the closed side and adjust the Toumi exhaust air opening to the large side.

Next, the operation of the controller H will be described with reference to the flow chart shown in FIG. Note that this process is an interrupt process at regular intervals (for example, several tens of milliseconds).
c). First, when both the threshing switch SW1 and the stock source sensor S1 are turned on, that is, after confirming that the grain culm is being supplied to the threshing device 2, the first layer thickness sensor S4 and the second layer thickness sensor S5. The layer thickness X at the front side portion and the layer thickness Y at the rear side portion are detected respectively. Then, the detected layer thickness X at the front side portion and the detected layer thickness Y at the rear side portion are compared, and when the layer thickness Y at the rear side portion is thicker than the layer thickness X at the front side portion, the reception It is determined that the mesh 22 is in a clogged state, the warning lamp 34a is turned on, the warning buzzer 34b is activated,
Also, a clogging alarm is activated by displaying “Tsumari Hassay” on the character display 34c to notify the operator of clogging of the receiving net 22. When the layer thickness X at the front side portion is larger than the layer thickness Y at the rear side portion, the chaff sheave opening degree and the toumi exhaust air opening degree are automatically adjusted as described above.

[Other Embodiments] In the above embodiment, as the plurality of layer thickness detecting means S4 and S5 for detecting the layer thickness of the processed material existing on the rocking sorting plate 19, the net 22 in the processing material transfer direction is used. One layer thickness sensor S4 and one layer thickness sensor S5 are provided at the front side and the rear side of the rear end position, respectively.
However, the present invention is not limited to this, and two or more layer thickness sensors may be provided at each location, and the detection values of the two or more layer thickness sensors may be averaged to obtain the layer thickness at that location.

In the above embodiment, the layer thickness detecting means S is also used.
As S4 and S5, a contact sensor that detects the layer thickness by the swing angle of the bar that comes into contact with the processed object and swings to the rear side was used. For example, a photoelectric sensor or an ultrasonic sensor that detects the layer thickness may be used.

It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a block diagram of a control configuration.

FIG. 2 is a schematic side view of the combine.

[Fig. 3] Combined power system diagram

FIG. 4 is a schematic vertical sectional side view of a threshing device.

FIG. 5 is a vertical sectional front view of the upper part of the threshing device.

FIG. 6 is a side view of the layer thickness detecting means.

FIG. 7 is a side view of the chaff sheave opening adjustment mechanism.

FIG. 8 is a side view of the Toumi exhaust air flow adjustment mechanism.

FIG. 9 is a diagram showing characteristics of a threshing control control volume.

FIG. 10 is a flowchart of control operation.

[Explanation of symbols]

 A handling room 22 receiving net 15 opening 19 swing selection plate 100 discriminating means S4, S5 layer thickness detecting means

Claims (1)

[Claims] 1. A handling chamber having a net (22) for leaking processed material from a starting end side to a terminating side, and an opening (15) for discharging the processed material formed at the terminating side ( A), a swing selection plate (19) arranged below the handling room (A), and a determination means (10) for determining the clogging state of the receiving net (22).
0) and a clogging detecting device of the threshing device, wherein a plurality of layer thickness detecting means (S4, S5) for detecting the layer thickness of the processed product existing on the rocking sorting plate (19). However, at least one is provided at each of the front side position and the rear side position with respect to the rear end position of the receiving net (22) in the processed material transfer direction, and the determination means (100) is configured to have the plurality of layer thicknesses. A threshing device that determines, based on the information from the detection means (S4, S5), that the net (22) is in a clogged state when the layer thickness at the rear side portion is thicker than the layer thickness at the front side portion. Clogging detector.