JPH0739400Y2 - Threshing equipment overload prevention structure - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention mainly relates to a transmission structure of a threshing device mounted on a combine for harvesting soybeans and other beans.

[Conventional technology]

Conventionally, as the transmission structure of the threshing device mounted on the combine for rice and wheat, a series of shafts such as the Tara-mitsu shaft as the driving shaft and the first screw shaft, the second screw shaft, and the rotary shaft for swing selection It is common to use a belt to tie them together.

A rotation detection sensor is installed on the No. 2 screw shaft to detect clogging in the No. 2 screw shaft or the No. 2 reduction device connected to this screw shaft. Then, safety devices such as an alarm device and an engine stop mechanism are activated.

[Problems to be solved by the device]

As the threshing device for processing beans is a whole culm input type that supplies the whole harvested grain culm to the threshing section, the amount of culm sent to the sorting section handles only the graining section. Compared to the threshing equipment for threshing rice and wheat, the clogging is more likely to occur not only on the No. 2 screw section but also on the rocking sorter. Therefore, if the threshing device for beans is equipped with the above-mentioned overload prevention structure, in this case, an overload acts on the rotary shaft for swing selection, and slippage occurs between the input pulley and the transmission belt of this rotary shaft. As a result, the rotation of the No. 2 screw shaft does not decrease, and there is a risk that the work may be continued without knowing the clogging of the culm on the swing sorting device.

In particular, beans are more easily damaged than grains of rice and wheat, so it is necessary to detect clogging of the processed material early and take appropriate measures such as cleaning.

The present invention has been made by paying attention to such an actual situation, and it is possible to accurately detect clogging in each part of the threshing device including the second screw part and perform an appropriate process in an early stage. It is an object of the present invention to provide an overload prevention structure capable of achieving a simple structure.

[Means for Solving the Problems]

In order to achieve the above object, the present invention is characterized by a series of belts including a small-diameter driving pulley that receives power from the Karatsu shaft and input pulleys for the first screw shaft, the second screw, and the rotary shaft for swing selection. Along with the interlocking connection with, the second screw shaft and the belt-type bucket conveyor for lifting the second material are interlocked and connected, and the rotation detection sensor for detecting the rotation speed of the rotating portion at the upper part of the bucket conveyor is provided. The safety device is configured to be activated when it is detected that the rotation speed of the bucket conveyor is lower than the set speed, and the action and effect thereof are as follows.

[Action]

According to the above characteristic configuration, when the second conveyor for lifting the second object is clogged only, a slip occurs between the lower drive pulley and the conveyor belt of the bucket conveyor, the conveyor belt rotates at a low speed, and the upper conveyor rotates. The rotation detection sensor detects that the rotation is low.

If clogging occurs not only on the bucket conveyor but also on the second screw, the load on the belt transmission system that is linked to the driving pulley becomes excessive and slips occur on the driving pulley, causing the rotation of the driving belt to decrease. Is also detected as a decrease in rotation in the rotating section above the bucket conveyor.

Also, if excessive pile clogging of the culms on the rocking sorting plate occurs, the load on the rotating shaft that drives the piles will increase and slip will occur on the driving pulley, which will cause the upper rotating part of the bucket conveyor to slow down. Further, the clogging at the first screw also causes the slip at the driving pulley, and is detected by the same rotation sensor.

[Effect of device]

As described above, according to the present invention, a small-diameter driving pulley that easily causes slippage is introduced into the belt transmission system, and a single rotation detection sensor is provided above the bucket conveyor for lifting the second product. With a simple structure, it is possible to detect clogging in each part of the first screw, the second screw, the swing sorting device, and the bucket conveyor for lifting the second object with the rotation sensor. It became possible to detect clogging early and take appropriate action.

〔Example〕

 Embodiments of the present invention will be described below with reference to the drawings.

Fig. 1 shows a combine constructed for harvesting soybeans and buckwheat.

As shown in the figure, a mowing part (1) is arranged at the front part of the machine body. This mowing part (1) is a rotary take-up reel (2), a clipper-type mowing device (3), and a mowed grain. It is composed of an auger (4) for gathering culms, a feed conveyor (5) for feeding grain culms upward, and the like. And the threshing device (1
The support part (8) is fixed to the front part of the vehicle body frame (7) having the pair of left and right crawler traveling devices (6) on which the horizontal axis (P) of the support part (8) is mounted. ₁ ) A mowing section (1) is attached to the periphery so as to be vertically movable, and a hydraulic cylinder (9) for vertically driving the mowing section (1) is provided.

With the above structure, the harvested grain culms collected by the auger (4) on the feed conveyor (5) side are conveyed by the carrier (5b) which is rotationally driven by the chain (5a) to the bottom of the feed conveyor (5). It passes through between the side guide plate (10) and the feed conveyor (5) and is sent to the grain culm discharge port (11) side.

Then, as shown in FIG. 1, the grain culms that have come out from the grain culm discharge port (11) are fed by a belt-type supply conveyor by a rotary drive type beater (12) provided in the front part of the threshing device (14). (13)
Is released on. Then, behind the supply conveyor (13), there is arranged a handling cylinder (16) which is driven to rotate clockwise around the horizontal axis (P ₂ ) in the figure. As a result, the grain culms on the supply conveyor (13) are sent to the handling cylinder (16) side, and are also sandwiched between the supply conveyor (13) and the pressure roller (15) so that the handling cylinder (16) side. It is extruded and threshed.

Below the handling cylinder (16), there is provided a sorting section for the falling processing objects. This configuration will be described. As shown in FIG. 1, the chaff sheave (17a) and the straw rack (17) are provided.
An oscillating sorting plate (17) equipped with b), a karako (18), a wind direction adjusting plate (19), and a sorting belt conveyor (2)
0) etc. are leveled, and the best thing is the most screw (2
After being collected in 1) and laterally fed, it is pumped from the end by a belt type bucket conveyor (22) and stored in the first tank (23). Then, the second material is collected by the second material processing rotor (24) and made into single particles.
Grains and the like that have leaked from the lower part of the second material processing rotor (24) are collected as second material by the second screw (25) and fed laterally, and then a belt-type bucket conveyor (at the end thereof) ( 26) and is stored in the second tank (27).

FIG. 2 shows the transmission structure of the threshing device (14).

The Karato shaft (18a) supporting the Karato (18) receives power from an engine (not shown), and the handling barrel (16), the first screw (21), the bucket conveyor (22), the second object processing rotor (24). ), The second screw (25), the bucket conveyor (26), and the rotary shaft (28) that pivotally rocks the rocking sorting plate (17), etc., and the Karako shaft (18a) is the driving shaft. .

In other words, the Karato shaft (18a) and the handle shaft (16a) are
In addition to being linked in conjunction with 9), the Karato shaft (18a) and the counter shaft (30) arranged above it are linked by a belt (31). And this counter shaft (30)
The small diameter driving pulley (30a) attached to the, the input pulley (21b) of the most screw shaft (21a), the input pulley (28a) of the rotary shaft (28) for driving the swing selection plate, the second screw shaft ( The input pulley (25b) of 25a) and the input pulley (24a) of the second product processing rotor (24) are connected in a series by a single belt (32). In this case, the driving pulley (30a) is set to have a smaller winding diameter than the other input pulley group serving as the driven pulley, and the driving pulley against the overload of the transmission system of the belt (32). The pulley (30a) is set so that slippage easily occurs.

Further, the most screw shaft (21a) and the lower drive shaft (33) of the bucket conveyor (22) are gear-interlocked conveyors (2
The lower drive shaft (33) in 2) is gear-linked and
The second screw shaft (25a) and bucket conveyor (2
The lower drive shaft (34) in 6) is geared.

Then, a rotation detecting sensor (S) is provided on the upper portion of the bucket conveyor (26) for lifting the second item.

FIG. 3 shows the upper part of the bucket conveyor (26), which is a conveyor case (3
The left and right tension brackets (37) that are adjusted up and down via the tension bolts (36) are installed on the upper part of 5), and the support shaft (38) horizontally fixed to the tension bracket (37) Wide driven pulleys (39)
Are rotatably supported by bearings (40), and a conveyor belt (42) having a bucket (41) is wound around the driven pulley (39). The rotation detection sensor (S) includes a permanent magnet (43) embedded in the side end surface of the driven pulley (39) and an electromagnetic pickup (44) fixed to the support shaft (38) side. A pulse signal is output from and input to the control circuit (45).

Therefore, when the rotation speed of the bucket conveyor (26) decreases, the cycle of the pulse signal from the electromagnetic pickup (44) increases accordingly, and when this cycle exceeds a set value, the control circuit (45) changes the safety device. The operation signal is output to (46).

As the safety device (46), an alarm mechanism or an engine automatic stop mechanism, which is used alone or in combination, is used.

When the driven pulley (39) of the bucket conveyor (26) has a support structure that rotates integrally with the support shaft (38), a rotation detection sensor (S) is used to detect the rotation of the support shaft (38). It is good to provide.

Alternatively, the driving pulley (30a) may be directly provided on the Karako shaft (18a).

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

[Brief description of drawings]

The drawing shows an embodiment of the present invention, FIG. 1 is a vertical sectional side view showing the overall structure of the combine, FIG. 2 is a schematic side view of the transmission structure, and FIG. It is a vertical front view shown. (18a) …… Tara Minoh axis, (21a) …… most screw axis,
(25a) …… Second screw shaft, (21b), (25b), (2
8a) …… Input pulley, (26) …… Bucket conveyor,
(28) …… Rotary axis, (46) …… Safety device, (S) …… Rotation detection sensor.

Claims (1)

[Scope of utility model registration request] Claims: 1. A small diameter drive pulley (30a) that receives power from the Karako shaft (18a), a first screw shaft (21a), a second screw (25a), and a rotary shaft (28) for swing selection. The input pulleys (21b), (25a) and (28a) are linked and linked by a series of belts (32), and the second screw shaft (25a) and a belt type bucket conveyor for lifting the second load ( 26) is connected and linked, and equipped with a rotation detection sensor (S) that detects the rotation speed of the rotating part above the bucket conveyor (26), and detects that the rotation speed of the bucket conveyor (26) has dropped below the set value. An overload prevention structure for a threshing device, which is configured to activate a safety device (46) when operated.