JP2003102237A - Dust-removing device of combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the dust-removing performance of the reaping and transporting section of a combine harvester. SOLUTION: This dust-removing device of the combine harvester is characterized by disposing a dust-preventing cover 13 for covering the upper side of the reaping and transporting section 7, forming the dust-preventing cover 13 from a fixed front cover 13a and a rear cover 13b capable of being longitudinally slid with respect to the front cover 13a, and disposing dust-removing fans 14, 15 in mutually facing postures in the grain straw-transporting direction of a grain straw-transporting device 10. Suction air or pressurized air is allowed to act on dusts with the dust-removing fans 14 in the longitudinal direction wide range of the transported grain straws to remove the dusts.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust removing device for a harvesting and conveying section of a combine.

[0002]

2. Description of the Related Art Japanese Patent Application Laid-Open No. 2001-78558 discloses a dust removing apparatus for a combine harvesting and conveying section. According to the present invention, a cross-flow fan is provided above the handling chamber of the threshing unit, the intake air passage is connected to the front side of the cross-flow fan, and the intake port of the intake air passage is opened in the dust-proof cover of the mowing unit to allow cross-flow. The dust sucked by the fan is guided to the rear part of the machine body and discharged.

[0003]

SUMMARY OF THE INVENTION In the above invention, since the intake port of the intake air passage connected to the cross flow fan is opened at the rear part of the dustproof cover of the mowing section to discharge the dust, the suction force is weak. There was a problem that suction of dust from the harvested culm was insufficient. Therefore, the present invention is intended to solve such a problem and improve the performance of removing dust from a transported grain culm.

[0004]

In order to solve the above-mentioned problems, the invention of claim 1 conveys to a cutting and conveying section 7 which is arranged laterally of the cockpit 3 and whose vertical rotation is adjustable. A dustproof cover 13 is provided so as to cover the grain culm, and this dustproof cover 1
3 comprises a fixed front cover 13a located on the front side and a rear cover 13b slidable in the front-rear direction with respect to the front cover 13a, and when the rear cover 13b slides to the front side, The rear cover 13b is mounted above the front cover 13a and overlaps the front cover 13a to open the rear cover 13b.
4 is provided.

According to the first aspect of the present invention, the dust exhaust fan 14 provided in the fixed front cover 13a located on the front side of the dust-proof cover 13 sucks wind to the grain culms conveyed by the reaper-conveying unit 7. Dust is exhausted by applying air or compressed air. When the rear cover 13b is slid forward with respect to the front cover 13a provided with the dust exhaust fan 14, the rear cover 1
The dustproof cover 13 can be opened while 3b rides above the front cover 13a and overlaps.

According to a second aspect of the present invention, in addition to the first aspect of the invention, a plurality of dust-exhausting fans 14 and 15 are arranged inside the front cover 13a so as to face each other along the longitudinal direction of the transport grain stem. It is characterized by having done. The invention of claim 2 provides a dustproof cover 1
By the plurality of dust-exhausting fans 14 and 15 provided in the front cover 13a in the fixed state of No. 3, suction wind or compressed air is applied over a wide range in the longitudinal direction of the transfer grain culm of the cutting and conveying unit 7 to remove it from the transfer grain culm. Remove dust.

The invention of claim 3 is characterized in that, in addition to the invention of claim 1, the dust-exhaust fan 14 is driven / stopped in association with the driving / stopping of the mowing and conveying section 7 and the threshing section 4.
In the invention of claim 3, the dust-exhaust fan 14 provided in the front cover 13a in the fixed state of the dust-proof cover 13 is driven when the cutting and conveying section 7 and the threshing section 4 are driven, and stopped when stopped. At the same time, suction air or compressed air is applied to the conveyed grain culms of the harvesting and conveying section 7 to remove dust from the conveyed grain culms.

[0008]

According to the first aspect of the present invention, the dust-exhausting fan 14 provided on the front cover 13a of the dust-proof cover 13 applies suction air or compressed air from the vicinity of the conveyed grain culm, so that the dust-exhaust performance is improved. be able to. Further, the dust collecting fan 14 is provided in the front cover 13a on the fixed side of the dustproof cover 13, and the rear cover 13b is opened above the front cover 13a so that the rear cover 13b overlaps the front cover 13a and is opened. To make the dust cover 13 easy.
The attachment structure of the dust-exhaust fan 14 can be simplified.

Further, according to the second aspect of the present invention, the plurality of dust-exhausting fans 14 and 15 perform the dust-extracting action over a wide area in the longitudinal direction of the conveyed grain culm, and the dust-exhausting performance can be improved. Also,
According to the third aspect of the present invention, when the dust removal fan 14 provided in the front cover 13a of the dustproof cover 13 is driven / stopped, the dust removal fan 14 is driven when the reaping transport unit 7 and the threshing unit 4 are driven, and stopped when stopped. As a result, the dust-exhaust fan 14 is driven and dust is emitted only when dust is generated during the transportation of the harvested culm, and durability and energy saving can be improved.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention shown in the drawings will be described below. The traveling vehicle body 2 of the combine travels by the crawler traveling devices 1 and 1, and on the traveling vehicle body 2, the cockpit 3, the threshing unit 4, the grain tank 5, the rice shavings treatment device 6 and the like are mounted, and the front of the threshing unit 4 is mounted. Is provided with a reaping and conveying section 7 which is vertically rotated around a fulcrum in the rear part and is moved up and down.

The planted grain culm is cut by the cutting device 9 after being raised by the grain culm raising device 8 of the cutting and conveying device 7, and the cut grain culm is taken over by the grain culm conveying device 10 and conveyed by lifting. , To the feed chain 11 of the threshing unit 4.
Next, the grain culms sent to the handling chamber (not shown) by the feed chain 11 are threshed by the rotation of the handling cylinder (not shown), and the grains and straw waste that have passed through the catch net are shaken and sorted (not shown). ), And is separated into grains and straws by the sieving action of the rocking sorting device, and transferred to the lower sorting air passage (not shown) for wind selection. The wind-selected grains are fried and stored in the Glen tank 5 by the first fried device 12,
In addition, the straw waste flowing to the terminal side of the sorting air passage is discharged from the rear part of the threshing section 4 to the outside of the machine, and the thresher waste that has been conveyed rearward by the feed chain 11 is discharged by the rice shaving treatment device 6. , For example, shredded and discharged outside the machine.

Next, the dust removing device of the cutting and conveying section 7 will be described with reference to FIGS. A dust-preventing cover 13 is provided on the harvesting and conveying section 7 arranged laterally of the cockpit 3 so as to cover the upper portion of the conveyer grain stem. This dust cover 13
Is composed of a front cover 13a located on the front side and fixedly attached to the frame, and a rear cover 13b slidably provided in the front-rear direction with respect to the front cover 13a. When the front cover 13b is slid and opened to the front side, the rear cover 13b overlaps the front cover 13a and rides thereon.

A first dust-exhaust fan 14 is arranged inside the front cover 13a with its dust suction port facing downward, and a second dust-exhaust fan 15 is oriented toward the outer part with its dust suction port facing obliquely inward. Are arranged. These dust-exhausting fans 14 and 15 are arranged in front of the takeover adjusting chain 10a on the terminal side of the grain culm conveying device 10.

The first and second dust-exhausting fans 14 and 15 are driven by the fan motor 16, and the dust suction port is provided with a net 17 for preventing the sucking of the grain culms. The dust thus collected flows downward along the inner peripheral surface of the front cover 13a, is discharged, and is discharged downward from the transfer section 7 of the threshing section 4 to the front of the harvesting and conveying section 7 of the harvesting culm. .

Therefore, the first dust collecting fan 14 and the second dust collecting fan 15 are arranged so as to be substantially opposed to each other along the wide range in the longitudinal direction of the grain culm conveyed by the grain culm conveying device 10. It is possible to absorb dust from the whole grain culm and improve the dust absorbing ability. In addition, the entire upper surface of the grain culm transporting device 10 of the reaping and transporting unit 7 is covered by the front and rear covers 13 of the dustproof cover 13.
The first and second dust exhaust fans 14 and 15 are attached to the front cover 13a on the fixed side of the dust cover 13, and the rear cover 13b is located above the front cover 13a. Since the structure is such that it overlaps and opens so that it rides up, maintenance of the reaping / conveying unit 7 can be facilitated.

The dust that has been sucked in is filtered by the front cover 13a.
Since it is guided to the outside downward along the inner peripheral surface of the culm and is discharged to the lower part of the reaping / conveying unit 7 through the front of the transfer portion of the threshing unit 4 of the reaping culm to the feed chain 11, the culm conveying device 10 threshes. The first and second dust-exhausting fans 14, 15 are provided for the unstable transport grain culm which is being taken over by the feed chain 11 of the section 4.
It is possible to smoothly carry over the cut culms while preventing the disturbance of the conveyed culms and the spillage of the conveyed culms without the exhaust air from flowing.

Next, based on FIGS. 1 and 5, first and second
The ON / OFF configuration of the dust removal fans 14 and 15 will be described. Turns the first and second dust removal fans 14 and 15 on and off
In doing so, the first and second dust-exhausting fans 14 and 15 are turned on in connection with turning on / off of the mowing / threshing clutch lever 18.
It is configured to turn off. That is, as shown in FIG.
A mowing / thrushing clutch on / off detection switch 19 for detecting ON / OFF of the mowing / thrushing clutch lever 18 is connected to a control unit 20 with a built-in CPU via an input interface.
Further, fan motors 16 and 16 for driving the first and second dust exhaust fans 14 and 15 are connected to the control unit 20 via an output interface.

As shown in FIG. 5 (2), when the drive control of the dust-exhausting fan is started, it is judged whether or not the reaper / threshing clutch on / off detection switch 19 is turned on, and the reaper / threshing clutch is detected. When the ON / OFF detection switch 19 detects ON, a drive command is issued and the fan motors 16 and 16 are turned ON.
Also, the reaper / threshing clutch on / off detection switch 19
Is detected, the fan motors 16 and 16 are turned off.
Set to F.

Therefore, the first and second dust-exhausting fans 14 and 15 are driven to remove the dust only when dust is generated during the transfer of the harvested culm with the reaping and threshing clutch engaged. Energy saving can be improved. Next, another embodiment of removing dust from the cut grain culm will be described with reference to FIG.

A dustproof cover 13 is provided so as to cover an upper portion of the transport culm of the cutting and transporting section 7 provided on the side of the cockpit 3, and the dustproof cover 13 is located on the front side and is in a fixed front cover. 13a and a rear cover 13b that is provided slidably in the front-rear direction with respect to the front cover 13a. Further, when the rear cover 13b is slid to the front side, the rear cover 13b overlaps the upper side of the front cover 13a so that the rear cover 13b can ride on and open. On the inner side of the front cover 13a, a compressed air type first dust-exhaust fan 21 is arranged with its blower port facing downward, and on the outer side, a second dust-exhaust fan 22 is slanted inwardly. It is arranged so as to be directed toward the front side of the takeover adjusting chain 10a on the terminal end side of the grain culm transporting device 10. These dust removal fans are dust removal fan motors 16
It is driven by a and 16a.

Therefore, the first and second first dust-exhausting fans 21 and 22 are blown to the cut grain culms being conveyed by the grain culm conveying device 10.
It is possible to improve the threshing performance by blowing off the straw and dust adhering to the cut grain culm and the straw debris that is caught or clogged in the grain culm conveying device 10 and sending a clean grain culm to the threshing unit 4. .

In addition, the first and second dust-exhausting fans 2 are provided in the front cover 13a fixed to the front frame of the dust-proof cover 13.
Since the first and second dust collecting fans 13 and 22 are provided, the mounting structure can be simplified without moving the first and second dust collecting fans 21 and 22 when the dustproof cover 13 is opened and closed.

Further, dust generated in the mowing and conveying section 7 can be removed by blowing air toward the ground, and dust and soaring around the cockpit 3 and hot air can be removed downward, thereby providing a comfortable operation space. be able to. Also, the dust removal fan motor 1
6a and 16a may be configured to rotate the first and second dust-exhaust fans 21 and 22 in the forward or reverse direction, and may be configured to be driven by switching the forward and reverse with a switch. Further, it may be configured to switch between normal rotation and reverse rotation at predetermined time intervals.

Then, the first and second dust collecting fans 21, 2
By rotating the cutting blade 2 in the forward direction, the straw scraps caught in the reaping and conveying section 7 and the stuck straw scraps can be blown off and cleaned. In addition, the first and second dust removal fans 2
By rotating the Nos. 1 and 22 in the reverse direction, the dust in the dustproof cover 13 can be sucked and removed, and the dust adhering to the cut culm during transportation can be sucked and removed and discharged outside the machine.

Further, since the rear cover 13b is slidable in the front-rear direction with respect to the front cover 13a of the dustproof cover 13 so as to be openable and closable, when the rear cover 13b is closed.
The first and second dust-exhausting fans 21, 22 can be rotated in the reverse direction to absorb and remove the dust in the dust-proof cover 13.

Next, another drive control of the dust-collecting fan will be described with reference to FIGS. 2 and 7. As shown in FIG. 2, a grain culm presence / absence sensor 23 for detecting the presence or absence of a harvested grain culm is provided near the grain culm transporting device 10, and as shown in FIG. 7, the grain culm presence / absence sensor 23 is passed through an input interface. Control unit 20
To the control unit 20 via the output interface, the first dust-collecting fan motor 24 for rotating the first and second dust-collecting fans 21, 22 in the forward direction, and the second dust-collecting fan motor for rotating in the reverse direction. 25 are provided.

When the drive control of the first and second dust-exhausting fans 21, 22 is started, it is judged whether the reaping and threshing clutch lever 18 is on / off, and if the clutch is on, then the grain stem presence sensor 23. The presence / absence of cut culms is determined by, and when the grain culm presence / absence sensor 23 detects that there is no culm, the first and second dust removal fans 21 and 22 are normally rotated to blow air to clean the reaping / conveying unit 7, Further, when the presence of grain culm is detected, it is rotated in the reverse direction and sucked, and the dust of the transported grain culm is sucked and discharged.

Further, a traveling sensor (not shown) provided in the traveling power transmission device detects forward traveling or backward traveling of the machine body, and when the traveling sensor detects backward traveling, the first and second dust-collecting fans 21, 22 rotate forward. -Blow air to clean the reaping / conveying unit 7, and when forward traveling is detected, the first and second dust-exhausting fans 21 and 22 are reversely rotated and sucked, so that dust from the conveyed grain stem is sucked and discharged. You may comprise.

Further, when the cutting and conveying section 7 is raised and rotated to a predetermined height during the cutting operation, the feed chain 11 of the threshing section 4 is moved.
In the combine adopting the feed chain stop control at the time of raising the mowing and conveying section so as to stop the cutting operation, when the mowing and conveying section 7 is lifted above a predetermined height and the feed chain 11 of the threshing section 4 is stopped, the first and second Exhaust fan 21,22
When the cutting and conveying unit 7 is at a position lower than a predetermined height and the grain and culm conveying device 10 is driven, the feed chain 11 of the threshing unit 4 is driven. The first and second dust-exhausting fans 21 and 22 may be inversely rotated in relation to each other to suck the dust from the transport grain culm.

[Brief description of drawings]

1] Overall side view

FIG. 2 is an overall plan view

[Fig. 3] Overall front view

FIG. 4 is a cutaway front view of a main part.

FIG. 5 is a block circuit diagram and a flowchart.

FIG. 6 is a cutaway front view of a main part.

FIG. 7 is a block circuit diagram and a flowchart.

[Explanation of symbols]

1 Crawler traveling device 2 running car 3 pilot seat 4 Threshing Department 5 Glen Tank 6 waste treatment device 7 Mowing and transporting section 8 Grain culm raising device 9 cutting device 10 Grain culvert carrier 11 Feed Chain 13 Dust cover 13a front cover 13b rear cover 14 Dust fan 15 Dust fan

Claims (3)

[Claims] 1. A dust-preventing cover 13 is provided on a lateral side of a cockpit 3 and is adjustable in vertical movement so as to cover a conveyer grain stem. A front cover 13a in a fixed state and a rear cover 13b slidable in the front-rear direction with respect to the front cover 13a. When the rear cover 13b is slid forward, the rear cover 13b Front cover 1
A combine dust removing device, characterized in that the dust removing fan 14 is provided in the front cover 13a so as to ride over the upper portion 3a and open. 2. The combine dust according to claim 1, wherein a plurality of dust-exhausting fans 14 and 15 are arranged to face each other in the inner portion of the front cover 13a along the longitudinal direction of the transported grain culm. Removal device. 3. The combine dust removing apparatus according to claim 1, wherein the dust-exhausting fan 14 is driven / stopped in association with the driving / stopping of the mowing and conveying section 7 and the threshing section 4.