JPH10276553A - Machine frame for threshing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent threshing performance from being lowered by keeping the prescribed dimension of clearance between handling teeth and a threshing reception net by suppressing distortion, which occurs on a machine frame for threshing device because of a threshing load, to a minimum. SOLUTION: Concerning this threshing device, a grain culm route A is formed between a front side panel 3 and a rear side panel 4 in a threshing chamber supporting a threshing cylinder, and the upper part of left side panel 6 in a sorting chamber downside the threshing chamber 2 and its upside area are made into open space B. Then, a threshing reception net 9 is framed between a middle side panel 8 inside the rear side panel 4 and the front side panel 3. In this case, the rear side panel 4 and the middle side panel 8 are bonded into ladder by plural dust sorting bars 10 arranged along with the surface of threshing reception net at suitable intervals, and the right and part of reinforce panel 4a of another member loaded on the main body of grain culm route A on the rear side panel 4 is bonded to a partition plate 13 in a dust processing chamber at the back of threshing chamber 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a frame of a threshing apparatus, and more particularly to a technique for increasing the rigidity of a frame of a threshing apparatus.
It can be used for stationary threshing machines.

[0002]

2. Description of the Related Art Conventionally, in a frame of a threshing apparatus, a handling cylinder is supported on a front plate and a rear plate of a threshing chamber, and a feed chain is provided on both side plates by a feed chain at the time of threshing. A large cut-out portion is provided as a passage for the culm to be conveyed, and a large open space is provided in the upper region of the left side plate when the feed chain is opened outward during maintenance or the like. It is well known that a threshing receiving net for a handling cylinder is supported between a middle side plate and a front side plate located near the inner side.

However, the front plate and the rear plate supporting the handling cylinder have a large cut-out portion as a grain culm conveying passage, and a large open space for maintenance is also provided in an upper region of the left plate. In addition, since these members are formed of a thin plate in order to reduce the weight, in the case of the threshing method of the bottom-handling mode, the driving reaction force of the handling cylinder at the time of threshing, especially the rear side plate and the middle An excessive load is applied to the side plates and the like, and it is difficult to maintain the clearance between the toothing of the handling cylinder and the threshing receiving net at a predetermined size.

Therefore, in the present invention, the rear plate and the middle plate are joined in a ladder shape by a dust sorting bar, and a reinforcing plate is attached to the rear plate to increase the rigidity of the machine frame.

[0005]

According to the present invention, a grain culm passage A is formed in a front side plate 3 and a rear side plate 4 of a threshing chamber 2 for supporting a handling drum 1, and a sorting chamber 5 below the threshing chamber 2 is located on the left side. The upper part of the plate 6 and the upper region thereof are formed as an open space B with the opening of the feed chain 7 outward, and a threshing net 9 is provided between the middle plate 8 and the front plate 3 located near the inside of the rear plate 4. The rear side plate 4 and the middle side plate 8 are joined to each other in a ladder shape by a plurality of dust sorting bars 10 arranged along the threshing receiving net 9 at appropriate intervals. The right end of the reinforcing plate 4a, which is a separate member which is attached to the culm passage A mainly below the central part of the rough handling cylinder 1 of 4, is positioned behind the threshing chamber 2 to support the dust discharge cylinder 11. The machine frame is characterized in that it is joined to the partition plate 13 of the exhaust processing chamber 12.

[0006]

With the above arrangement, the grain culm supplied to the threshing device is transported by the feed chain 7 and threshed between the handling drum 1 and the threshing receiving net 9, and the thresh is further removed from the dust drum 1.
After being reprocessed by 1, the dust is discharged outside the machine. At the time of such threshing processing, the front side plate 3 and the rear side plate 4 that support the handling cylinder 1 in the threshing room 2 are used when the grain culm is threshed.
Distortion is likely to occur due to the driving reaction force of the tooth treatment implanted in the tooth.

Since this tendency is particularly noticeable in the rear plate 4, the rear plate 4 and the middle plate 8 are laddered by a plurality of dust sorting bars 10 arranged along the threshing receiving net 9 at appropriate intervals. In addition to increasing the rigidity by forming and joining in a shape, the lower part of the rear side plate 4 below the center of the roughly handling cylinder 1 is mainly composed of the grain culm passage A, and the reinforcing plate 4 a of at least another member thicker than the rear side plate 4 is attached. Rigidity is increased, and the right end of the reinforcing plate 4a is joined to the partition plate 13 of the dust treatment chamber 12, so that the rigidity is further increased, and the rear side plate 4 during threshing is further increased.
And the distortion generated in the middle side plate 8 and the front side plate 3 can be minimized, so that the clearance between the toothing of the handling cylinder 1 and the threshing receiving net 9 is maintained at a predetermined size to reduce the threshing performance. Can be prevented.

[0008]

As described above, the rear plate 4 that supports the rear side of the handling cylinder 1 and the middle plate 8 that supports the threshing receiving net 9 are formed and joined in a ladder-like manner by the dust-sorting bar 10. A reinforcing plate 4a is attached to the rear side plate 4, and the reinforcing plate 4a
is joined to the partition plate 13 of the dust treatment chamber 12, the rigidity can be greatly increased with a slight increase in weight. Even when an excessive load is applied to the middle side plate 8, the generation of distortion can be minimized.

Accordingly, as in the prior art, the handling cylinder 1 is reduced for weight reduction.
The front side plate 3 and the rear side plate 4 supporting the front plate have a thin plate structure, and have an open space B when the feed chain 7 is opened outward in the upper region of the left side plate 6,
A large distortion occurs in the rear side plate 4 supporting the handling cylinder 1 and the middle side plate 8 supporting the threshing receiving net 9, and the toothing of the handling cylinder 1 and the threshing receiving net 9 are generated.
It is difficult to maintain the clearance with the predetermined size, and there is no problem in the threshing state. Therefore, a highly efficient operation can be performed without lowering the threshing performance by the machine frame configuration with less distortion.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings for a combine (particularly a threshing apparatus). A traveling device 16 provided with a pair of left and right traveling crawlers 15 traveling on the soil surface is provided below the undercarriage 14 of the combine, and on the undercarriage 14 husks supplied and fed to the feed chain 7 are threshed. A threshing device 18 having a Glen tank 17 for selectively collecting the threshed grains and temporarily storing them, and a discharge cylinder 17a for discharging the grains from the Glen tank 17 to the outside of the machine.
Is mounted.

At the front side of the threshing device 18, a weeding body 19 for weeding the planted grain culm, a raising part 20 for causing the weeded grain culm, and a cutting blade part 21 for cutting the caused grain culm.
And a cutting device 23 provided with a grain stalk transport portion 22 for transporting the harvested grain stalk to the rear side and delivering the harvested stem to the feed chain 7 so that the front end of the chassis 14 can be moved up and down with respect to the soil surface. It is constructed by mounting it on a part.

An operation device 24 for controlling the operation of the combine is provided on one side of the threshing device 18 and an operation seat 2 for this operation.
5 are provided, and the traveling device 16, the threshing device 18, the reaping device 23, the operating device 24 and the like constitute an airframe 26. The threshing apparatus 18 has a threshing chamber 2 on the upper side, a dust treatment chamber 12 on the rear side of the threshing chamber 2, and a sorting chamber 5 on the lower side.

The threshing room 2 is provided with a front side plate 3 at the inlet side for supplying the grain culm, and the front side plate 3 is provided with a conveying passage A for the threshing grain culm by a large inverted notch. At the same time, a rear side plate 4 is formed at the outlet side of the threshing chamber 2 at the same cutout as the front side plate 3 to form a conveying path A. The front side plate 3 and the rear side plate 4 support the handling cylinder 1. Support and configure.

The handling cylinder 1 has a handling tooth 1a for threshing grain culms.
Are arranged and planted, a middle plate 8 is arranged near the inside of the rear plate 4, and two lower and back sides of the handle drum 1 are provided between the middle plate 8 and the front plate 3. The threshing receiving net 9 which is divided and surrounds is detachably supported. The dusting drum 11 for reprocessing the threshed threshed by the handling cylinder 1 and discharging the dust is attached to the inner side plate 8 at the back side of the threshing receiving net 9, that is, on the right side and the dusting rear side plate 2.
7, a dust processing chamber 12 is provided behind and in parallel with the handling cylinder 1 to support the bearing in parallel.

As shown in FIG. 1, a plurality of waste materials disposed at appropriate intervals are roughly sorted to remove straw wastes and the like discharged from the threshing room 2 and not leaking from a threshing receiving net 9 and sent to a dust processing chamber 12. The dust separating bar 10 joins the middle plate 8 and the rear plate 4 along a threshing receiving net 9 in a ladder-like manner by welding or using bolts or the like, thereby forming a box-shaped structure in which mutual rigidity increases. The rear plate 4
A rear plate 4 for reinforcing the cutout portion mainly in the cereal stalk passage A over the whole area on the lower side from the center position of the rough handling cylinder 1 of FIG.
A thicker reinforcing plate 4a of the same shape is joined by bonding, and the right end of the reinforcing plate 4a is joined to a partition plate 13 that holds the outer periphery of the dust treatment chamber 12 at the position of the rear side plate 4, so that threshing is performed. Notch of the rear side plate 4 due to the load of
A rigid structure that can reduce distortion of the part.

A handle cylinder cover 28 that covers the upper part of the threshing device 18 such as the threshing chamber 2 and the dust processing chamber 12 is openably and closably provided. A driving joint for driving the feed chain 7 is provided at the outlet end of the feed chain 7 which presses and holds the feed chain 7 from below and conveys the feed chain 7 from below. 30 are engaged with each other.

In the sorting room 5, an oscillating sorting shelf 31 for performing specific gravity sorting of thresh leaked from the threshing receiving net 9 is provided.
It is provided in a region from the entrance side start end to the exit side end part, and Karin 32 which wind-selects thresh by blowing air below the entrance side of the swing sorting shelf 31, and between this Karin 32 and the outlet side, The first spiral 33 for horizontally feeding the first grain selected by the specific gravity sorting and the wind sorting and the second spiral 34 for horizontally feeding the second product are provided.

As shown in FIG. 2, an open space B having a size necessary for taking out the threshing receiving net 9 out of the machine, cleaning the threshing net 9 and the like is provided above the left side plate 6 of the sorting room 5 and its upper region. Provided,
A lid side plate 35 for closing the open space B and a chain frame 36 for extending the feed chain 7 are integrally formed, and a rotation support shaft 37 provided at a front end of the left side plate 6 is used as a fulcrum. To be able to open and close. A mesh stopper plate 38 for locking the end of the threshing receiving net 9 is attached to the lid side plate 35 so as to be movable along the arc of the threshing receiving net 9 on the side of the toothing 1a of the handling drum 1. Is opened and closed, the drive coupling 30 of the feed chain 7 is configured to be detachable.

A dust exhaust fan 39 for exhausting threshing dust to the outside by a sirocco fan or the like and a fan exhaust port 40 are formed by an upper cover 39a and a lower guide 39b above the lower side of the swing sorting shelf 31. Provided. The culm cutter 41, which cuts the culm by a large number of opposed disk blades 41a and 41b and discharges the culm to the outside of the machine, is mounted on the rear side plate 42 of the threshing device 18 so as to face the fan dust outlet 40. At the same time, a culm transport chain 43 that conveys the threshed culm to the culm cutter 41 extends from the rear end of the threshing chamber 2.

In the threshing room 2, the threshed by the handling drum 1 and leaked from the threshing receiving net 9 falls onto the oscillating sorting shelf 31 of the sorting room 5, and is subjected to specific gravity sorting by the oscillating sorting shelf 31. The first grain and the second grain selected by the wind sorting by Karino 32 are fed laterally by the first spiral 33 and the second spiral 34, and are conveyed to the Glen tank 17 and the sorting room 5 and the like, respectively.

In such a threshing apparatus 18, when it is necessary to take out the threshing receiving net 9 outside the machine or clean the swinging sorting shelf 31, the upper area of the left side plate 6 of the sorting room 5 is removed. A lid side plate 35 closing the open space B, and a chain frame 36 and a net retaining plate 38 integrally formed with the lid side plate 35 are wound around the feed chain 7 and mounted around a rotation support shaft 37 as a fulcrum. By opening the door outward, the threshing receiving net 9 is brought into an open state where it can be pulled out, and the net 9 can be detached from the front side plate 3 and the middle side plate 8 of the threshing room 2 and easily pulled out to the front side. In addition, it is possible to easily remove straw waste or the like caught or accumulated on the swing sorting shelf 31.

As described above, even if the large open space B for maintenance is provided in the upper region of the left side plate 6 of the sorting room 5, the handling cylinder 1 is supported by the front side plate 3 and the rear side plate 4. By supporting the threshing receiving net 9 by the front side plate 3 and the middle side plate 8 with a structure that increases the rigidity of the machine frame as described above, the clearance between the toothing 1a of the handling cylinder 1 and the threshing receiving net 9 is set to a predetermined value. Dimensions can be maintained and threshing performance can be prevented from lowering.

As shown in FIG. 1, an auxiliary left side plate 44 joined to the front side of the middle side plate 8 and the rear side plate 4, that is, the left end, is extended rearward from this joint portion to the rear side of the left side plate 6. The auxiliary left side plate 44 reinforces the open space B in the upper region of the left side plate 6 and has a shallow U-shape provided over the entire width of the middle side plate 8 and the rear side plate 4. The auxiliary left side plate 44 and the upper part of the left side plate 6 are connected and arranged by a connection reinforcing plate 45 having a sectional shape such as the above.

The upper and lower end portions of the connection reinforcing plate 45 are located at the upper and lower ends of the left side plate 6 and the auxiliary member which are in contact with the outer peripheral portion of the inner surface of the lid side plate 35 in order to prevent dust from blowing out from the gap when the lid side plate 35 is closed. The connecting portion at the lower end of the linear sealing member 46 attached to the position of the left side plate 44 is a rail portion for taking out the swing sorting shelf 31 out of the left side plate 6. 6a.

As described above, by connecting and reinforcing the left side plate 6 and the auxiliary left side plate 44 with the connection reinforcing plate 45,
The structure for increasing the rigidity of the machine frame as described above can be further enhanced. The cross-sectional shape of the connecting reinforcing plate 45, such as a U-shape, can improve the strength of the reinforcing plate 45 itself, prevent the side seal of the swing sorting shelf 31 from being damaged, and can prevent the reinforcing plate 45 from being left-sided. 6, the strength of the left-hand side plate 6 itself and the connecting portion thereof can be improved.

As shown in FIG. 3, the upper and lower sides of a net retaining plate 38 for locking the drawn-out end of the threshing receiving net 9 to the lid side plate 35 are provided with bolts, nuts, and the like. In the one that can be moved and adjusted to the side,
As shown in FIGS. 4 and 5, a plurality of rows (for example, six rows) of teeth 1 a on the rear side of the cylinder 1 pass through the rear side where the net retaining plate 38 rises along the arc of the threshing receiving net 9. A groove m having an appropriate depth is provided.

When threshing of the cereal stalk, conventionally, if unhandled portions are generated, the net retaining plate 38 is moved to the handling teeth 1a side,
Although the clearance between the mesh retaining plate 38 and the teeth 1a is adjusted to be close to zero, it is difficult to suppress the occurrence of unhandled by this measure alone, and therefore, as described above, the teeth are formed in the groove m of the mesh retaining plate 38. By adjusting so that 1a bites into the groove, the groove m acts like a divider and promotes threshing, so that the remaining untreated can be suppressed to a minimum, and the spikes of the trailing ears and short culm are also inserted into the groove m. As a result, it is possible to improve the shedding performance.

Further, of the plurality of teeth 1a corresponding to the groove m of the net stopper plate 38, a plurality of teeth 1a (for example, 3) on the rear end side.
By making the (rows-12) higher by several millimeters (for example, 3.5 millimeters), it is possible to further increase the suppression of unhandled portions and the improvement of the shedding performance as described above.
In the traveling device 16, a transmission case 48 having a hydraulically driven pawl clutch type side clutch 47 and a shifter 63 for driving the left and right traveling crawlers 15 is mounted on the front end of the chassis 14. (FIG. 12
A power steering lever 49 is provided on one side of the operation device 24 for performing left and right steering during the movement and raising and lowering the mowing device 23.
As shown in FIG. 9, a see-saw switch 50 for turning ON / OFF by a swing operation and outputting a signal of an output time of an extremely short steering operation control by a swing operation is provided at a grip end portion 49a of the lever 49, as shown in FIG. Is provided, and the number of times of the steering operation control output is slightly adjusted by turning on the switch 50.
A sensitivity setting dial 51 as shown in FIG. 10 is arranged on a switch panel of the operation device 24.

As shown in FIG. 11, there is provided a controller 52 which mainly arranges a CPU and performs arithmetic control of an automatic circuit.
On the input side of the controller 52, the seesaw switch 50 and the sensitivity setting dial 51, and the power steering lever 4
The left and right steering switch 53 which is turned on / off by the left / right operation 9; the direction sensor 54 which automatically turns on / off this left / right steering; A height sensor 55 that raises and lowers the vehicle height, a cutting position sensor 56 that detects the raising and lowering position of the cutting device 23 by operating the power steering lever 49 in the front-rear direction, and a vehicle speed sensor 57 that detects the vehicle speed are connected. A direction control solenoid valve 58 for switching the hydraulic circuit is connected to the output side.

As shown in FIG. 12, the hydraulic circuit for turning the side clutch 47 on and off includes a left hydraulic cylinder 60a or a right hydraulic cylinder for actuating the left or right side clutch 47 from a hydraulic pump 59 via a direction control solenoid valve 58. A pipe is connected to each piston side of the cylinder 60b, and the variable throttle 61a and the fixed throttle 6 are operated from the respective intermediate positions of the hydraulic cylinders 60a and 60b by operating the power steering lever 49, respectively.
It is configured to be connected to the oil return tank 62 via 1b.

Conventionally, when one-way mowing work is performed on a soft soil surface such as a wetland, the traveling crawler 15 is used.
Sinks from the soil surface and increases running resistance, so that the left and right steering by the power steering lever 49 tends to be excessively operated. When the operation is excessive, the left and right steering and the progress of the aircraft 26 are smoothly performed. It is difficult to perform the operation, and if it is poorly performed, the traveling performance deteriorates due to mud pushing or the like, and if the vehicle stagnates in this state, traveling may be impossible.

In such a case, the vehicle height sensor 55 detects a vehicle height above a certain level at which the body 26 can travel, and detects that the cutting height of the reaper 23 is at a predetermined position at this vehicle height. When the power steering lever 49 is turned on, the signal of the extremely short output time can be continuously output in small increments according to the setting of the sensitivity setting dial 51 by turning the seesaw switch 50 of the power steering lever 49 left or right. Therefore, the steering operation can be performed little by little during the long steering control distance, and the left-right steering can be performed smoothly, and the steering operability can be improved without damaging the soil surface.

Further, as in the prior art, in which the distance to the stock company is controlled by the length of the output signal time, the vehicle approaches the stock company when the vehicle speed is high (about 1 m / sec or more). In some cases, the swing of the body 26 to the left and right becomes large, and the ride comfort may be deteriorated. In such a case, as shown in FIG. 13, as the vehicle speed detected by the vehicle speed sensor 57 increases, the pulse signal to be output to the direction control solenoid valve 58 is controlled so as to reduce the number of outputs in a very short fixed time. The pulse output for a very short period of time is increased by increasing the number of outputs at low speeds and decreasing the number of outputs at high speeds, so that the steering operation can be continued little by little, so that the cutting streaks can be dislodged or uncultivated culm. It is possible to prevent snagging or the like, and to perform smooth steering operation control, so that the swing of the body 26 can be reduced even when approaching the stock company side, and the riding comfort can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a main machine frame configuration of a threshing apparatus.

FIG. 2 is a perspective view showing a state in which a lid side plate and a handling drum cover of the threshing apparatus are opened.

FIG. 3 is a schematic front view showing a state in which a net stopper plate of the threshing apparatus is adjusted and moved toward the tooth handling side.

FIG. 4 is a perspective view showing a state of a groove portion into which a tooth of a net stopper plate of the threshing device is bitten.

FIG. 5 is a front view showing a state in which teeth are bitten into grooves of a net stopper plate of the threshing apparatus.

FIG. 6 is a side sectional view showing the entire configuration of the threshing apparatus.

FIG. 7 is a plan sectional view showing the entire configuration of the threshing apparatus.

FIG. 8 is a side view showing the overall configuration of the combine.

FIG. 9 is a perspective view showing a form of a power steering lever of the combine.

FIG. 10 is a plan view showing an adjustment dial for controlling the number of pulse outputs for the right and left steering control of the combine.

FIG. 11 is a block diagram showing an electric circuit for controlling the right and left steering of the combine.

FIG. 12 is a block diagram showing a hydraulic circuit for right and left steering control of the combine.

FIG. 13 is a diagram showing the relationship between the number of output signals for the right and left steering control of the combine and the vehicle speed.

[Explanation of symbols]

 1. Handling cylinder 2. Threshing room Front side plate 4. Rear plate 4a. Reinforcement plate 5. Sorting room 6. Left side plate 7. Feed chain 8. Middle side plate 9. Threshing receiving net 10. Dust sorting bar 11. Dust cylinder 12. Dust treatment chamber 13. Divider

Claims (1)

[Claims] 1. A grain culm passage A is formed in a front side plate 3 and a rear side plate 4 of a threshing chamber 2 for supporting a handling cylinder 1, and an upper part of a sorting chamber 5 left side plate 6 below the threshing chamber 2 and an upper area thereof. In the threshing apparatus in which a threshing receiving net 9 is supported between the middle side plate 8 and the front side plate 3 located near the inside of the rear side plate 4, The rear side plate 4 and the middle side plate 8 are joined in a ladder shape by a plurality of dust sorting bars 10 arranged along the threshing receiving net 9 at appropriate intervals, and the central part of the rear side plate 4 substantially in the handling cylinder 1 The right end of the reinforcing plate 4a, which is a separate member whose lower side is mainly attached to the grain stalk passage A, is located behind the threshing chamber 2 and supports the dust-cylinder 11 in a partition plate of the dust-treating chamber 12. A machine frame characterized by being joined to the frame 13.