JPH0520135Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Field of industrial application The present invention relates to a sieve sorting device in a thresher that threshes and sorts grain culms.

(b) Prior Art A thresher is already known in which a oscillating sorting body having a transport plate and a sorting net in that order is installed in a sorting air duct below the handling chamber, and an auxiliary flow plate is attached to the upper or lower surface of the sorting net so that it can be moved forward or backward to adjust the leakage area of the sorting net depending on the amount of material to be sorted, etc.

(c) Problems to be solved by the invention The flat plate movement adjustment device in the known threshing machine has an arm pivotally attached to one end of the wide auxiliary flow plate, and the arm is attached to one side of the swinging sorting body. Since the auxiliary flow plate was adjusted to move forward or backward by pushing and pulling a long hole drilled in the side plate as a guide, when the auxiliary flow plate was moved forward or backward by the arm, this would occur and the forward/backward movement would be extremely poor or the movement would be difficult. In addition, it is necessary to take measures to prevent grains and straw debris from blowing out from the elongated holes.Furthermore, since the movement distance of the auxiliary flow plate and the arm are approximately equal, a large amount of operation is required, and the side plate is long. Since the holes are drilled, the strength of the oscillating sorter is reduced, making it difficult to apply to large objects.

(d) Means for solving the problem The present invention involves installing an oscillating sorting body in the sorting air passage at the bottom of the handling room, and arranging a transfer plate and a sorting net in that order on the oscillating sorting body. In this threshing machine, a gap is provided in the vertical direction at the connection between the transfer plate and the sorting net, and an auxiliary transfer plate is inserted in this gap so as to be movable back and forth, and the bases of the pair of left and right connecting rods are connected to the width of the transfer plate. The auxiliary transfer plate is rotatably pivoted by a fulcrum pin held at an intermediate portion thereof, and pins provided at both ends of the auxiliary transfer plate are slidably fitted into elongated holes formed at the tips of the connecting rods, In addition, the above-mentioned problem was solved by slidably fitting a pin provided at the tip of a Y-shaped adjustment body in plan view that moves back and forth into a long hole formed in the middle part of the connecting rod.

(e) Action When the adjustment body is moved toward the sorting net, the midway parts of the left and right connecting rods move by the same amount as the movement of the adjustment body at the bottom of the sorting plate, so that both sides of the auxiliary transfer plate are connected. The tip of the rod pushes out the filter by a force greater than the amount of movement of the adjusting body with approximately the same pressing force, and the leakage area of the sorting net is reduced.

Furthermore, when the adjusting body is adjusted by moving in the opposite direction,
The middle part of the continuous rod moves to the opposite side from the sorting net, and along with this, both sides of the auxiliary transfer plate move in a direction away from the sorting net, and the leakage area of the sorting net is expanded. In this case, the left and right connecting rods apply approximately equal force to both sides of the auxiliary transfer plate, and the amount of movement is amplified.

Furthermore, there is no need to drill long holes in the side plates of the swinging sorter.

(f) Embodiment To explain an embodiment of the present invention, a threshing machine is mounted on a combine harvester base with the supply port at the front. A processing cylinder 5 is mounted on a shaft in a processing chamber 4 provided from the side of the dust inlet 3 provided on one side of the rear part of the chamber to the rear, and a dust sorting chamber 7 is installed from below the receiving screen 6 of the processing chamber 2.
A swinging sorting body 8 is installed so as to swing back and forth, and the swinging sorting body 8 has a sorting path consisting of a transfer plate 10, a front chaff sheave 11, and a rear chaff sheave 12 as its upper layer. , corrugated transfer plate 13
and a sorting path consisting of a sorting net 15 facing above the first receiving gutter 14 and a stroke rack 17 facing above the second receiving gutter 16 as a lower layer,
The air blower 18 provided below the supply port serves as a sorting air passage that blows through the net 20 and front chaff sheave 11 stretched on the starting end side of the transfer plates 10 and 13, and a sorting air passage that blows through the screen 20 and the front chaff sheave 11 from below the transfer plate 13. The suction windmill 21 is provided on one side of the rear of the processing chamber 4, and the suction windmill 21 is provided on one side of the rear of the processing chamber 4. The discharge port and the dust sorting chamber 7 are sucked.

A feed chain 22 and a pinching rail 23 are installed opposite to each other on the outside of the handling port, and the exhaust dust sorting chamber 7 is connected from the rear end thereof.
A straw removal conveying device 25 is provided above.

The rear end of the transfer plate 13 and the front end of the sorting net 15 are formed into stepped portions in which the transfer plate 13 is raised, and between them, the rear part of an auxiliary transfer plate 26 made of a corrugated plate can be advanced and retreated. The auxiliary transfer plate 26 is inserted into the transfer plate 13 via a forward/backward adjusting device 27.
Supported by

The advancement/retraction adjustment device 27 includes a guide body 30 in which bent portions on both sides of the upper portion are welded to the center portion of the lower surface of the transfer plate 13, and a guide body 30 has a long hole 28 in the front and back direction in the bottom plate portion.
, a sliding body 31 that is fitted into the guide body 30 and whose middle part of its width is slidably engaged with the elongated hole 28; and a fulcrum pin whose inner end protrudes from the lower surface of the rear end of the guide body 30. 32 and whose outer ends are welded to both lower surfaces of the auxiliary transfer plate 26;
A pair of left and right connecting rods 34, 34 are pivotally connected to the connecting rods 34, 34, and the protrusions on both sides are pivotally connected to the middle part of the connecting rods 34, 34, forming a Y-shape in plan view, and the rear center is connected to the sliding body. 31 and an adjusting body 36 screwed onto the connecting rods 34, 34 by screws 35, 35.
For the central and outer end pivoting parts, slides 38 made of synthetic resin with high abrasion resistance and vibration absorbing properties are fitted into elongated holes 37, and these slides 38 are adjusted. It is constructed by being fixed to pins 39 protruding from both rear ends of the body 36 and the front ends of the plates 33, 33.

Further, the connecting rods 34, 34 are pulled rearward by springs 40, 40, respectively, and the rear ends are screwed into the adjusting body 36 and the sliding body 31 by screws 35, 3.
The front end of the band-shaped spring plate 41 which is screwed together by screws 5 is inserted into a guide metal 42 made of synthetic resin on the lower surface of the swinging sorter 8, and is inserted into the guide metal 42 made of synthetic resin provided on the front upper surface of the threshing cover 43. It is interlocked with an adjustment lever 45 via a wire 46, and the adjustment lever 45 is fitted into a guide groove of an operation panel 47.

Next, to explain the sorting of grain threshing, handling room 2
The grains and small straw waste generated inside the tank leak from the receiving net 6 onto the transfer plate 10 and are sieved while being screened by the front chaff sieve 11 and rear chaff sieve 12.

In addition, the leakage material from the front and rear chaff sieves 11 and 12 is sieved and screened by a sorting net 15, and falls into the first receiving gutter 14, and the straw containing the second material remaining on the sorting net 15. The waste is transferred to the stroke rack 17 and subjected to sieving and winnowing, and the second waste that leaks and falls into the second receiving gutter 16 is returned to the handling chamber 2 or the transfer plate 10 by the second thrower.

Furthermore, the dust discharged from the dust inlet 3 is transferred to the processing chamber 4.
The straw waste that leaks from the processing cylinder receiving net 50 joins the swinging sorter 8 and is sorted, and the straw waste that has moved to the end of the processing chamber 4 is discharged from the discharge port. The straw waste floating in the dust sorting chamber 7 is sucked out of the machine by the suction windmill 21,
Large pieces of straw are discharged from the dust outlet 52 to the outside of the machine.

In such a threshing sorting process, if the threshing conditions are good and the threshing can be carried out with high efficiency and the amount of material to be sorted on the swing sorting body 8 is large, rotating the front adjustment lever 45 upward will cause the adjustment body 36 and The sliding body 31 is pulled forward via the wire 46 and the spring plate 41, and the left and right connecting rods 34, 34 rotate forward about the fulcrum pin 32, so that the auxiliary transfer plate 26 is pulled forward by the spring 40, 40, the grains are equally transferred forward on both the left and right sides as shown by the chain lines in FIG.

Conversely, when the amount of material to be sorted is small, rotating the adjustment lever 45 downward loosens the wire 46 and spring plate 41, and the left and right connecting rods 34, 34
are pulled by the springs 40, 40, respectively, and rotate rearward about the fulcrum pin 32 as shown by solid lines, so that the auxiliary transfer plate 26 moves rearward and covers the upper surface of the front portion of the sorting net 15. The leakage area of the sorting net 15 is reduced, and the amount of the material to be sorted can ensure at least the thickness of the layer to prevent cut straw from mixing with the grains.

When the front auxiliary transfer plate 26 is moved back and forth, both sides of the plate can be pushed and pulled approximately equally, so the auxiliary transfer plate 26 moves smoothly forward and backward without this occurring, and the adjustment body 36 is connected. Rod 3
4 and 34, the amount of movement of the auxiliary transfer plate 26 is amplified compared to the amount of movement of the adjusting body.
Even if the amount of operation of the adjustment lever 45 is small, the movement of the auxiliary transfer plate 26 can be adjusted significantly.

(G) Effect of the Invention In the present invention, in a thresher in which a swaying separator 8 is suspended in the separator air passage below the handling chamber 2 as described above, and a transport plate 13 and a separator net 15 are disposed in that order on the swaying separator 8, a gap is provided in the vertical direction at the connection between the transport plate 13 and the separator net 15, and an auxiliary transport plate 26 is interposed in this gap so as to be movable back and forth, the bases of a pair of left and right connecting rods 34, 34 are pivotally attached to the transport plate 13 by a fulcrum pin 32 held in the middle of the width of the transport plate 13, and pins 39, 39 provided at both ends of the auxiliary transport plate 26 are slidably fitted into long holes 37, 37 formed at the tips of the connecting rods 34, 34, and the connecting rods 34, 34 are pivotally attached to the transport plate 13 by a fulcrum pin 32 held in the middle of the width of the transport plate 13, and the pins 39, 39 provided at both ends of the auxiliary transport plate 26 are slidably fitted into long holes 37, 37 formed at the tips of the connecting rods 34, 34.
Pins 39, 39 provided at the tip of the adjustment body 36, which is Y-shaped in a plan view and moves back and forth, are freely fitted into long holes 37, 37 formed in the middle of the rods 4, 34.Therefore, when the adjustment body 36 is moved back and forth, the auxiliary transfer plate 26 is pushed and pulled approximately equally on both the left and right sides via the left and right connecting rods 34, 34, so that the auxiliary transfer plate 26 can be moved forward and backward smoothly even when heavy sorted objects are placed on it.

In addition, since the intermediate portions of the above-mentioned connecting rods 34, 34 can be moved forward and backward by the adjusting body 36, the movement of the auxiliary transfer plate 26 can be greatly adjusted with a small amount of operation, and it is possible to move and adjust the movement of the auxiliary transfer plate 26 by a small amount. There is no need to drill a long hole in the side plate of the body 8 for advancing and retracting operations, and there is no need to take measures to prevent the objects to be sorted from flowing out from the long hole. It is possible to prevent the strength of the sorting body 8 from decreasing.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention,
Figure 1 is a longitudinal sectional view of the threshing machine, Figure 2 is a cross-sectional view of the threshing section, Figure 3 is a longitudinal sectional view of the main parts, Figure 4 is a perspective view of the same, Figure 5a is a plan view of the same, FIG. 6 is a longitudinal sectional view of the advance/retreat adjustment device, FIG. 7 is a perspective view of the sliding member guide portion, and FIG. 8...Occillating sorting body, 13...Transfer plate, 15...
Sorting net, 26... Auxiliary transfer plate, 34... Connecting rod, 3
6... Adjustment body, 40... Spring.

Claims (1)

[Scope of utility model registration request] A swinging sorting body 8 is installed in the sorting air passage at the bottom of the handling room 2, and a transfer plate 13 and a sorting net 15 are attached to the swinging sorting body 8.
In this threshing machine, a gap is provided in the vertical direction at the connection between the transfer plate 13 and the sorting net 15, and an auxiliary transfer plate 26 is interposed in this gap so as to be movable back and forth. The base of the connecting rods 34, 34,
A fulcrum pin 3 held at the middle part of the width of the transfer plate 13
2, the connecting rods 34, 34
Pins 39, 39 provided at both ends of the auxiliary transfer plate 26 are slidably fitted into elongated holes 37, 37 formed at the tips of the connecting rods 34, 34. A sieve sorting device for a threshing machine, characterized in that pins 39, 39 provided at the tips of an adjusting body 36 having a Y-shape in plan view and moving back and forth are slidably fitted in the sieve sorting device 37, 37.