JP2002171825A - Cereal grain-discharging unit of combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cereal grain-discharging unit capable of stopping its dispatching work of cereal grains from a grain tank for preventing further clogging or breakage of a transmission system of the cereal grain-dispatching device when the clogging of the cereal grains is generated on discharging the cereal grains in the grain tank to the outside of the machine by air force. SOLUTION: This cereal grain-discharging unit has a constitution characterized by installing the cereal grain-dispatching device at the grain tank for taking out the cereal grains stored in the grain tank, an air conveying force-generating means for conveying the cereal grains taken out by the above cereal grain- dispatching device, a cereal grain-discharging auger for discharging the cereal grains together with air to the outside of the machine on the downstream side in the cereal grain conveying direction of the above air conveying force- generating means, a clogging sensor 8b for detecting the clogging of the cereal grains in the vicinity of the cereal grain-discharging port of the cereal grain- discharging auger, and a regulating means 100 for stopping the driving of the cereal grain-dispatching device on detecting the clogging of the cereal grains by the above cereal grain-clogging sensor.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a combine grain discharging device.

[0002]

2. Description of the Related Art A conventional grain discharging device for a combine is provided with a spiral at the lower portion of a Glen tank, and discharges the grain from the grain discharging auger by rotating the spiral.

[0003]

In the above-described combine grain discharging device, the grains are damaged by friction with the spiral. In addition, since it was a configuration to provide a spiral,
The weight of the whole combine was heavy.

[0004] The present invention provides a grain discharging device which solves such a problem, and aims to cope with clogging of the grain at the time of discharging the grain.

[0005]

SUMMARY OF THE INVENTION The present invention takes the following technical means in order to solve the above-mentioned problems. That is, in the invention according to claim 1, a cutting device 3 that cuts the planted grain culm and transports it rearward is provided in front of the chassis 2 having the traveling device 1, and the cutting device 3 is provided on the chassis 2. In a combine provided with a threshing device 4 for threshing and sorting the conveyed grain culms, a grain tank 5 for temporarily storing the grains threshed and selected by the threshing device 4, and an operation unit 6, the grain tank 5 Is provided with a grain feeding device 15 for taking out the grains stored in the Glen tank 5,
Air conveying force generating means 7 for conveying the grains taken out by the grain feeding device 15 by pneumatic force is provided. On the lower side of the air conveying force generating means 7 in the grain conveying direction, the kernels are mixed with air. A grain discharge auger 8 is provided for discharging to the outside of the machine, and a clogging sensor 8b for detecting clogging of a grain is provided in the vicinity of a grain discharge port 8a of the grain discharging auger 8; A control unit 100 for stopping the operation of the grain feeding device 15 when the clogging of the grain is detected is provided.

According to the second aspect of the present invention, the alarm is generated by the alarm generating means 8c substantially simultaneously with the stop of the operation of the grain feeding device 15. It is a combine grain discharging device.

[0007]

According to the first aspect of the invention, when the grains in the Glen tank 5 are discharged outside the machine, the air conveying force generating means 7 and the grain feeding device 15 are driven. The grains delivered by the grain delivery device 15 are discharged out of the machine from the grain discharge port 8a of the grain discharge auger 8 together with air by the air force generated by the air conveying force generating means 7. To go.
During the discharging operation, when the clogging sensor 8b detects a clogged state of the grain, the control unit 100 stops driving the grain feeding device 15.

According to the second aspect of the present invention, when the driving of the grain feeding device 15 is stopped, the alarm generating means 8c is provided.
Alarm occurs.

[0009]

According to the first aspect of the present invention, when the grain is clogged in the vicinity of the grain discharge port 8a, the drive of the grain feeding device 15 is stopped. On the lower side in the grain transport direction, it is possible to prevent the grain from being extremely clogged. Accordingly, damage to the grain such as detachment can be prevented, and damage to the grain feeding device 15 and its driving system can be prevented.

According to the second aspect of the present invention, since the worker can recognize the clogged state of the grain, the operator can immediately take measures to improve the work efficiency.

[0011]

Embodiments of the present invention will be described with reference to the drawings. 1 to 4 show an ordinary combine which is an agricultural machine that embodies the present embodiment.

In front of the undercarriage 2 having the traveling device 1, a cutting device 3 for cutting the planted cereal culm and transporting it to the rear, and a threshing device further rearward by inheriting the cereal culm transported from the mowing device 3. An elevator 3a is provided for transporting the vehicle 3 toward the elevator. The cutting device 3 includes a weeding tool 10 for weeding the planted grain culm, a scraping reel 3c having a tine 3b for scraping the weeded grain culm, a cutting blade 11 for cutting the scraped grain culm,
It is composed of an auger drum 12 and the like for feeding the cut culm to the rear elevator 3a. During the transportation of the elevator 3a, a discharge device 3d configured to discharge dust in the elevator 3a to the outside of the machine is configured.

On the undercarriage 2, a threshing device 4 for threshing and sorting grain culms conveyed from the elevator 3a, and a Glen tank 5 for temporarily storing the grains that have been threshing and sorted by the threshing device 4
And the operation unit 6 covered by the cabin 6a is placed. The temperature inside the cabin 6a can be adjusted, and a condenser 6c as a cooling device for the refrigerant for the temperature adjustment is provided.
Is mounted and supported by a frame above the rear part of the chassis 2. The engine 2a is mounted at the front of the chassis 2 and below the operation unit 6 so as to be able to transmit the rotating parts of each device.

When the work is started by running such a combine, the planted grain culm is weeded by the weeding tool 10 and is scraped by the scraping reel 3c having the tine 3b to the cutting blade 11. Is reaped. The grain stalks cut by the cutting blade 11 are collected by the auger drum 12, and are lifted by the elevator 3a.
It is sent to the beginning of.

The cereal culm sent to the elevator 3a is conveyed rearward and is put into a threshing device 4 for threshing and sorting. The grains selected by threshing by the threshing apparatus 4 are the first elevator 35
From the tank 5 and temporarily stored therein.
When the grains in the Glen tank 5 are full, the grains are conveyed by the air conveying force generated by the air conveying force generating means 7 (hereinafter referred to as blower), and the kernels of the grain discharging auger 8 are discharged. It is discharged from the exit 8a to the outside of the machine. In the present embodiment, as described above, the ordinary type combine is shown. However, the function and effect are the same even with the self-removable type combine.

The structure of the blower 7, the Glen tank 5, and the grain discharge auger 8 will be specifically described. Blower 7
Is below the Glen tank 5 and the Glen tank 5
The front plate 5b is provided with an air inlet 7a and an air outlet 7b. A grain feeding device 15 is provided below the Glen tank 5, and is configured to be rotationally driven by a motor 13 and a chain 14. The grain feeding device 15 is provided with a plurality of blades 15a. The discharge port 7b of the blower 7 and the lower part of the grain feeding device 15 are connected by a flexible pipe 16, and the other side of the grain feeding device 15 (the lower side in the grain conveying direction). ) Is also connected to a grain discharge pipe 17, and is constituted by a single grain discharge pipe 17 up to the vicinity of the grain discharge port 8 a of the grain discharge auger 8.

As shown in FIGS. 3 and 4, the blower 7 may be mounted at the front of the front plate 5b of the Glen tank 5. Further, the grain feeding device 15 may be attached in a state of being swung by 90 °. Since the grain discharge pipe 17 is configured to be flexible, the grain discharge pipe 17 is configured to be slightly curved between the connection portion of the grain feeding device 15 and the vertical steel pipe 19. Further, the grain discharge pipe 17 is configured to bend gently between the vertical steel pipe 19 and the horizontal steel pipe 21. This is to reduce the resistance of the air passing through the grain discharge pipe 17 and the grain. Thereby, the grains are smoothly transported toward the grain discharge port 8a.

In order to gently bend the grain discharge pipe 17, in order to reduce the resistance applied to the air and the grains, at least 10 mm of the inner diameter of the grain discharge pipe 17 is required.
Double is needed. However, due to the structure of the combine,
It is difficult to adopt a configuration that takes ten times the inner diameter of the grain discharge pipe 17. If configured in this way, the grain discharge pipe 17
Is projected rearward, and the overall length of the combine becomes significantly longer. Therefore, the configuration is made such that at least up to approximately five times the inner diameter of the grain discharge pipe 17 is allowed. For this purpose, the performance of the blower 7 may be improved. Accordingly, the grain discharge pipe 17 can be prevented from protruding rearward, so that the overall length of the grain-pneumatic combine can be shortened, and the combine can be made compact.

At the front and rear of the Glen tank 5, a front plate 5b and a rear plate 5c are respectively provided integrally with the Glen tank 5, and the front plate 5b is formed integrally with the blower 7. The pipe 16 connecting the discharge port 7b of the blower 7 and the lower part of the grain feeding device 15 is made of a flexible material, but there is no problem in function even if it is made of a steel pipe. .
Since the joint 9 is provided in the middle of the pipe 16, when the joint 9 is removed, the blower 7 and the grain feeding device 15 are removed.
Can be easily attached and detached independently of the Glen tank 5.

The grain discharge pipe 17 connecting the lower part of the grain feeding device 15 and the grain discharge port 8a of the grain discharge auger 8 is constituted by a continuous flexible tube. I have. The grain discharge pipe 17 is configured to pass through a vertical steel pipe 19 that can be rotated left and right by a motor 18 and a horizontal steel pipe 21 that can be moved up and down by a hydraulic cylinder 20.

A gear 19a is fixed to the vertical steel pipe 19, and meshes with a pinion 18a of a motor 18 fixed to the machine body. Further, between the vertical steel pipe 19 and the horizontal steel pipe 21, a hydraulic cylinder 20 for raising and lowering the horizontal steel pipe 21 is provided. Therefore, the grain is discharged from the grain outlet 8
a, the motor 18 is driven to rotate the vertical steel pipe 19 (the horizontal steel pipe 21 is also rotated at this time), and the hydraulic cylinder 20 is driven to move the horizontal steel pipe 21 to an arbitrary position. It is configured to go up and down. Therefore, the vertical steel pipe 19
When the is turned, a torsional force acts on the grain discharge pipe 17, but as described above, there is no problem because the grain discharge pipe 17 is flexible. Further, when the horizontal steel pipe 21 moves up and down, elongation and compression force act on the grain discharge pipe 17, but there is no problem because the grain discharge pipe 17 is flexible.

Next, the drive configuration of the blower 7 will be described with reference to FIG. FIG. 5 shows a plan view. A pulley 2c is fixedly provided on an output shaft 2b of the engine 2a mounted below the operation unit 6. A belt 23 is wound around the pulley 2c and a fixed pulley 25 of an input shaft 24a of a rear counter case 24.
The output shaft 24b of the counter case 24 has a pulley 2
4c is integrally formed by casting.

The rear bevel case 27 is attached to the pulley 24c.
A belt 26 is wound around the pulley 28 of the input shaft 27a, and a belt tension clutch 33 is provided on the belt 26. The belt tension clutch 33 is provided with a cable 33a, which is connected to the grain discharge lever 22 of the operation unit 6.

A bevel gear 29 is fixed to the other end of the input shaft 27a of the bevel case 27 and meshes with a bevel gear 30 whose direction has been changed by 90 °.
A shaft 31 is fixed to the bevel gear 30, and the shaft 3
Reference numeral 1 denotes a configuration extending forward, and a chassis 2
Is fixedly provided. The belt 34 wound around the pulley 32
The blower 7 is wound around a rotating shaft 7c and a fixed pulley 7d.

During the harvesting operation in the field, when the grains in the Glen tank 5 are full, the motor 18 is driven to move the grain discharging auger 8 to an arbitrary position desired by the operator (such as a truck bed or a truck bed). (At this time, the horizontal steel pipe 21 also turns). Then, the hydraulic cylinder 20 provided between the vertical steel pipe 19 and the horizontal steel pipe 21 is driven to move the grain discharge port 8a up and down to a desired position.

Next, the grain discharge lever 22 provided on the operation unit 6 is set to the on state. Then, since the cable 33a is pulled and the belt tension clutch 33 tensions the belt 26, the power from the engine 2a is transmitted from the output shaft 2b to the counter case 24, the belt 26, and the bevel case 2.
7, transmitted through the shaft 31 to the rotating shaft 7c of the blower 7, the blower 7 starts rotating. After a predetermined time, the electric motor 13 is driven to drive the grain feeding device 15. This is because if the electric motor 13 is driven first and the grain feeding device 15 is driven, the grains are not conveyed and are clogged below the grain feeding device 15.

As a result, air is sucked from the suction port 7a of the blower 7, and the sucked air is discharged from the discharge port 7b while being accelerated to a certain speed or higher. Then, it passes through the pipe 16 and joins with the grains fed by the grain feeding device 15 below the grain feeding device 15. After that, it passes through the inside of the grain transport pipe 17 and is discharged from the grain discharge port 8a to the outside of the machine.

Thus, the grains in the Glen tank 5 can be prevented from being damaged. In particular, helical discharge is effective for transporting soybeans, one of the grains that are easily damaged. In addition to soybeans, it has an effect of preventing damage in transporting grains such as rice, wheat, and buckwheat. In addition, since the conventional spiral can be eliminated, the weight can be reduced.

However, grains may be clogged in the vicinity of the grain discharge port 8a. The grains are conveyed together with the high-speed air, so that they are almost never clogged. However, when the grains are wet, or when the grains discharged to the vicinity of the grain discharge port 8a approach. Despite this, if the grains are continuously discharged, the grains are clogged in the vicinity of the grain discharge port 8a.

Therefore, as shown in FIG.
clogging sensor 8 for detecting the state of clogging of grains near a
b is provided. When the clogging sensor 8b detects a clogged state of the grain, the signal is transmitted to the control means 100, and the control means 100 further transmits a signal to the motor 13 driving the grain feeding device 15. do it,
The driving of the motor 13 is stopped. This block diagram is shown in FIG. Thus, the grain outlet 8
When the grain is clogged in the vicinity of a, the drive of the grain feeding device 15 is stopped, so that the extremely clogged state of the grain can be prevented at the junction of the grain and the air or at the lower side in the grain transport direction. become. Accordingly, damage to the grain such as detachment can be prevented, and damage to the grain feeding device 15 and its driving system can be prevented.

As described above, when the grain feeding device 15 is stopped, the operator may misunderstand that the grain discharge from the Glen tank 5 has been completed. Causes the alarm generating means 8c to generate an alarm or to display the state of grain clogging on the monitor 8d. The monitor 8d is provided on the operation unit 6. This allows the operator to recognize the clogged state of the grain, so that the operator can immediately take measures to improve the work efficiency. The alarm generating means 8c may be configured to notify by voice.

As described above, when the grain feeding device 15 is stopped, the driving of the engine 2a and the blower 7 is not stopped. If the blower 7 stops, the clogged state of the grains will not be resolved. If the drive of the blower 7 is stopped, the portion where the grain transport pipe 17 is arranged in the vertical direction will This is because the grains fall down, and the grains overlap and clog at the lowest bottom. Even if the blower 7 is driven again in such a state, the grains may not be easily transported.

As another embodiment, when the clogging sensor 8b detects a clogged state of the grain, the engine cut-off fuel cut motor 8e may be driven to stop driving the engine 2a itself. In this case, when restarting the engine 2a, if the clogging state of the clogging sensor 8b is not resolved, the engine 2a is configured to be unable to start by restraining the restart of driving. Thereby, acceleration of the clogging state can be prevented.

As described above, the drive of the grain feeding device 15 and the blower 7 is automatically driven by setting the grain discharge lever 22 to the ON state. Of course, the blower 7 is driven first, and after a predetermined time, the grain feeding device 15 is driven. However, the grain feeding device 15 is configured to be able to be independently driven and stopped by a manual switch (not shown) for maintenance management. With this manual switch on, the engine 2
When driving a, the engine 2a cannot be driven. As a result, the grains in the Glen tank 5 are not inadvertently discharged to the outside of the machine, so that clogging of the grains can be prevented. Of course, if the engine 2a cannot be started,
The operator may misunderstand that this is another problem, so let the alarm or monitor notify the operator.

Next, FIGS. 7 and 8 will be described. In the Glen tank 5, a filling fan 40 for increasing the storage amount by making the grains uniform is provided. The filling fan 40
Is driven by a motor 41.
The motor 0 and the motor 41 are both integrally mounted on a cover 42 provided on the upper part of the Glen tank 5. The cover 42 is configured to be opened and closed with the hinge 43 as a fulcrum.
This is the configuration to be performed. Thereby, maintenance of the filling fan 40 and the motor 41 can be easily executed. As shown in the plan view of FIG. 8, the filling fan 40 is arranged on the right side of the grain discharge auger 8, that is,
Since it is not disposed below the grain discharge auger 8, it can be opened upward together with the cover 42 as described above. Thus, the capacity of the Glen tank 5 can be prevented from being reduced.

Further, as shown in FIG. 8, the grain discharging auger 8 is arranged on the right side of the elevator 35, that is, arranged so as to avoid above the elevator 35. As a result, the upper lid 35a of the first elevator 35 becomes detachable,
Maintenance management can be easily performed. The first lid 35a
Can be attached and detached with a plurality of bolts 35b, but there is no problem since the frequency of maintenance management is not high.

Next, FIGS. 9 and 10 will be described. As described above, the grains in the Glen tank 5 are transported by the pneumatic force generated by the blower 7. However, when the grains are directly taken out into the grain bag, the air is discharged at a high speed, so that the dust is removed. Many occurrences made it difficult for workers to work. Therefore, the inclined surface 4 of the Glen tank 5
5 is provided with a plurality of grain take-out ports 46. In this embodiment, there are two locations (46a, 46b).

A rectangular cylinder 47 projects laterally from the inclined surface 45, and includes a left cylinder 47a and a right cylinder 47b.
The left cylindrical body 47a and the right cylindrical body 47b are configured such that their outlets face downward. Above the grain outlets 46a and 46b, a holder 48 for supporting the grain bag 49 is formed. This allows the operator to take out the grains directly from the Glen tank 5 into the grain bag 49, so that the work can be performed efficiently without being covered with dust.

When the grain bag 49 is hooked on the holder 48, the position of the holder 48 is configured such that the height H of the grain bag 49 and the distance H from the ground are substantially equal, so that the grains are full. There is no need to support it, and stable work can be performed. A reinforcing member 50 is provided between the cylinder 47 and the grain feeding device 15. Thereby, the rigidity of the cylinder 47 and the grain feeding device 15 is improved. In particular, a full grain bag 49
When attaching / detaching, there is a case where a large load acts on the holder 48 and the cylindrical body 47. Even in such a case, the damage of the cylindrical body 47 can be prevented.

[Brief description of the drawings]

FIG. 1 is a left side view

FIG. 2 is a right side view

FIG. 3 is a right side view

FIG. 4 is a plan view

FIG. 5 is a plan view

FIG. 6 is a block diagram.

FIG. 7 is a right side view.

FIG. 8 is a plan view

FIG. 9 is a right side view.

FIG. 10 is a rear view.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Traveling device, 2 ... chassis, 3 ... Harvesting device, 4 ... Threshing device, 5 ... Glen tank, 6 ... Operating part, 7 ... Air conveyance force generation means, 8 ... Grain discharge auger, 8a ... Grain discharge port , 8b
... clogging sensor, 8c ... alarm generating means, 100 ... control means.

Claims (2)

[Claims] 1. In front of a chassis 2 having a traveling device 1,
A harvesting device 3 is provided for cutting the planted grain culm and transporting it rearward. A threshing device 4 for threshing and sorting the culm transported from the harvesting device 3 is provided on the undercarriage 2, and threshing and sorting by the threshing device 4. In a combine provided with a Glen tank 5 for temporarily storing the processed grains and an operation unit 6, the Glen tank 5
Is provided with a grain feeding device 15 for taking out the grains stored in the Glen tank 5, and an air conveying force generating means 7 for conveying the grains taken out by the grain feeding device 15 by pneumatic force.
A grain discharge auger 8 for discharging the grains together with air to the outside of the machine is provided on the lower side of the air conveyance force generating means 7 in the grain conveyance direction, and a grain discharge port 8a of the grain discharge auger 8 is provided. Is provided in the vicinity of the clogging sensor 8b for detecting clogging of the grain,
When the clogging sensor 8b detects clogging of a grain, a control means 100 for stopping the driving of the grain feeding device 15 is provided. 2. The combine grain discharging device according to claim 1, wherein an alarm is generated by the alarm generating means 8c substantially simultaneously with the stop of the driving of the grain feeding device 15.