JPH06303837A - Head-feeding type combine harvester - Google Patents

Abstract

PURPOSE:To prevent occurrence of unthreshed reaped grain culm even in the case of short cut reaped grain. CONSTITUTION:In a head-feeding type combine harvester equipped with a holding and transporting device 10 for passing an ear tip side of reaped grain culm through a threshing chamber while supporting and transporting a foot side of the reaped grain culm, the head-feeding type combine harvester is constituted to be changeable in between a state of carrying out holding and transportation of grain culm by the holding and transporting device 10 and a whole culm throwing state releasing hold by the holding and transporting device 10 and throwing transported grain culm to the threshing chamber.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-removing combine having a pinching / conveying device for nipping the root side of a cut grain culm and conveying it while allowing the tip side to pass through the handling chamber.

[0002]

2. Description of the Related Art In a conventional self-removing combine, a planting grain culm is mowed by a mowing section at the front end of the machine body, and the mowed grain culm is arranged by a vertical conveying device in a threshing device so as to face the feed chain. It is configured to handle the plant side of the harvested grain culvert while sandwiching and transporting it with a sandwiching and conveying device composed of a sandwiching rail that detects the culm length for changes in the culm length of the planted grain culm. Based on the detection result of the sensor, a configuration has been adopted in which the handling depth adjustment control is performed to change the sandwiched portion by the vertical transport device in the culm length direction (see, for example, Japanese Patent Laid-Open No. 4-365420).

[0003]

However, in the above-mentioned conventional configuration, when the culm length of the transported grain culm is extremely short, even if the vertical transport device is controlled to move to the deepest handling side, it is pinched by the feed chain. Since the distance from the grain to the grain-grained portion of the grain is short, the grain-grained grain portion may pass through a region that cannot be subjected to the handling action by the handling barrel rotating in the handling room. In particular, in the reaping work at the edge of the ridge, when performing the reaping work while raising the reaper in order to prevent the divider at the front end of the machine body from coming into contact with the ridge, the so-called reaping work causes As a result of shortening, the above-mentioned problems occur, and there is an adverse effect that unhandled parts occur. The present invention aims to eliminate the above-mentioned problems.

[0004]

The features of the first invention are as follows:
In the self-removing combine described at the beginning, a threshing operation state switching means is provided that is switchable between a state in which the grain transporting device is clamped and transported by the sandwiching and transporting device and a whole culm loading state in which the transported grain stalks are loaded into the handling chamber. There is a point. A characteristic configuration of the second invention is provided with a culm length detecting means for detecting whether or not an insertion length of the harvested culm conveyed by the sandwiching and conveying device into the handling chamber is equal to or less than a set value, and this culm length detecting means When it is detected that is less than or equal to the set value, the threshing operation state switching means is provided with a switching control means for automatically switching from the sandwiching and conveying state of the grain culms by the sandwiching and conveying device to the all culm throwing state. It is in. A characteristic configuration of the third invention is provided with culm length detecting means for detecting whether or not the insertion length of the cut culm conveyed by the sandwiching and conveying device into the handling chamber is equal to or less than a set value, and the culm length detecting means When it is detected that is less than or equal to the set value, an alarm means for issuing an alarm is provided.

[0005]

According to the characteristic constitution of the first invention, for example, when the culm length of the cut grain culm is within the set range, the sandwiching and conveying device performs the threshing process while performing the sandwiching and transporting so that the culm length of the harvested culm is short. If there is a risk that unhandled grain will be left over, it will be possible to switch not only the culm but also the stem culm into the handling room so that the culm can be thrown into the handling room. The grain culm is not discharged without performing the handling process for, and it is possible to reliably avoid the occurrence of the untreated part. According to the characteristic configuration of the second invention, when the culm length detecting means detects that the culm length of the transported grain culm is shorter than the setting, at that time, the threshing process is usually performed while sandwiching and transporting the grain culm by the sandwiching and conveying device. It automatically switches from the working state to the whole culm feeding state in which not only the granulation part but also the stem culm part is put into the handling chamber from the working state, so that the handling process is not performed on the granulation part. It is not discharged, and it is possible to reliably prevent the unhandled portion from being left. Moreover, the aircraft operator does not need to perform the operation of switching the threshing work state. According to the characteristic configuration of the third invention, when the culm length detecting means detects that the culm length of the transported grain culm is equal to or less than the set value and is extremely short, an alarm is issued, so that the aircraft operator can recognize this and It is possible to issue a command to switch from the normal work state to the above-mentioned all culm throwing state, the grain culm is not discharged without handling the graining part, and it is possible to reliably avoid leftovers can do.

[0006]

Therefore, according to the characteristic configuration of the first invention,
It has become possible to provide a self-removing combine capable of reliably avoiding the adverse effect that the grain adhering grain portion passes through an area in which the handling cannot be performed in the handling room and unhandled remains occur. According to the characteristic configuration of the second invention, in addition to the effect of the characteristic configuration of the first invention, the switching of the threshing operation state as described above is automatically performed, so that the aircraft operator does not need to perform a troublesome switching operation. , Unretained items will always be reliably avoided. According to the characteristic configuration of the third invention,
In addition to the effect of the characteristic configuration of the first invention, the threshing work state is switched based on the intention of the airframe operator. Therefore, for example, switching to the all-culm insertion state due to malfunction of the culm length detection operation or the like Is frequently performed and threshing work load becomes excessive, and there is an advantage that the drawbacks can be solved.

[0007]

Embodiments will be described below with reference to the drawings. Figure 1
Shows a self-healing combine. This combine is
Airframe frame 2 including a pair of left and right crawler traveling devices 1
The threshing device 3 is mounted on the upper part, the pre-mowing processing unit 4 is movably connected to the front of the machine body, and the boarding operation unit 5 is provided on the right side of the pre-mowing processing unit 4. The pre-reaping processing unit 4 is a weeding tool 6 for allocating and dividing the culm to be reaped, a raising device 7 for raising the fallen culm in an upright posture, and a reaping device 8 for cutting the root of the raised culm. , A plurality of auxiliary transporting devices 9a, 9b, 9c for collecting the harvested grain culms of the respective strips toward the center in the width direction and rearward while gradually changing the posture of the gathered grain culms in the standing posture to the sideways posture. The threshing device 3 is provided with a vertical transport device 11 for transporting toward the start end of the sandwiching transport device 10, and the entire pre-mowing processing unit 4 is provided with a horizontal axis P.
It is supported on the machine body frame 2 so that it can be raised and lowered around it. The sandwiching and conveying device 10 for threshing work, as shown in FIG.
It is composed of a feed chain 12 which is endlessly rotationally driven, and a sandwiching rail 13 which is arranged so as to face it. The sandwiching rail 13 is composed of a plurality of divided bodies 1 having a U-shaped cross section.
3a is pivotally connected to each other, and each of the pivotally connected portions is urged downward by a coil spring 16 that is externally fitted to a guide rod 15 that is penetratingly supported by the fixed base 14 and regulates the position. 13a is configured to be bendable so that the grain culms can be clamped and conveyed.

Each of the auxiliary transfer devices 9a, 9b, 9c is
Each transport path length and driving speed are set so that the grain culms of each row cut at substantially the same cutting timing are joined together. That is, as shown in FIG. 3, the grain culms in the strips on the uncut side and the strips in the middle are the belts 17 with the locking projections.
a, 17b and scraping rotators 18a, 18b are gathered together on the center side by auxiliary transporting devices 9a, 9b, and the strips on the trimmed side are belts 17c with locking projections, scraping rotators 18c. The auxiliary transporting device 9c configured by the sandwiching and transporting device 19 is configured to be merged and transported to the gathering position. Therefore, the auxiliary transfer devices 9a and 9b in the uncut side strip and the intermediate strip are set to have substantially the same transport path length and substantially the same drive speed, and the auxiliary transport device 9c for the strip on the cut side has a long transport path. Because the driving speed is 2
It is configured so that the grain culms of each row cut at almost the same cutting timing are merged together by setting them faster than the other people.

The vertical transfer device 11 is composed of a tip-side locking transfer device 11a and a stocker-side clamping transfer device 11b, and an electric motor 20 with a speed reduction mechanism allows relative vertical swing operation around the horizontal axis. Each of the auxiliary transport devices 9 is configured.
By changing the sandwiching position of the grain culms that are jointly conveyed from a, 9b, and 9c in the culm length direction, the depth of entry into the handling chamber 3a of the threshing device 3 (handling depth) is always controlled appropriately. Configured. That is, a pair of upper and lower grain culm detection sensors 21 and 22 for detecting the culm length of the transported grain culm are provided in the grain culm transport path, the short culm side detection sensor 21 always detects the grain culm, and the long culm side detection sensor 22 is The control device 23 equipped with a microcomputer drives and controls the electric motor 20 so as to be in the non-detection state, and vertically moves the vertical transfer device 11 so that the tip of the grain stem is located between the sensors 21 and 22. Dynamic control.

The threshing device 3 is a carrying device 1 for sandwiching the cut culm.
When the root side is clamped by 0, the tip side is driven by the handling barrel 3b that is driven to rotate in the handling chamber 3a, and the threshing work is performed. And, the vertical transfer device 11 is provided with the threshing operation state switching means A capable of switching between a state in which the feed chains 12 carry and hold the grain culms and a state in which all the culms are fed into the handling chamber. When the short culm side detection sensor 21 detects the absence of grain culm despite being operated to the side, the length of the transported grain culm is an extremely short culm that cannot be handled by the depth adjustment. When it is judged that there is, the threshing work state switching means A is provided with a switching control means for automatically switching from the state of sandwiching and transporting the grain culms by the feed chain 12 to the state of putting all the culms. The short culm side detection sensor 21 constitutes culm length detecting means B. More specifically, one of the plurality of guide rods 15 for supporting the sandwiching rail 13 is provided so as to be capable of being driven upward by an electric motor 25 via a link mechanism 24, and is provided at a sandwiching action position located on the lower side and an upper side. It is configured so that it can be switched to a position where it is retracted to release the sandwiched state of the grain culms. Therefore, by switching the guide rod 15 to the clamping release position,
The grain culm which is being transported to the location is released from the sandwiched transport by the feed chain 12 and the sandwiching rail 13, and the whole is pulled into the handling chamber. That is, the threshing release electric motor 25 constitutes the threshing operation state switching means A. Then, the clamping release electric motor 25 is configured to be drive-controlled by the control device 23, and the control device 2
3 is the short culm side detection sensor 2 even though the handling depth adjusting electric motor 20 is driven to the deepest handling side.
When 1 detects the absence of grain culm, it is configured to drive the nipping release electric motor 25 after a predetermined transportation required time to switch the guide rod 15 from the nipping action position to the nipping release position. There is. That is, the control device 23
The switching control means is constituted by. As a result, for example, when performing the mowing work on the edge of the ridge, when performing the mowing work while making a detour upward so that the weeding tool 6 does not contact the ridge, the cutting height becomes high and the length of the mowing culm is short. However, in such a case, the short culm side detection sensor 21 detects the absence of the grain culm, and it is possible to prevent the unhandled portion from being left in the above-mentioned all culm throwing state. .

The pinch release position is the feed chain 1
It may be set in the latter half of the sandwiching and conveying path by 2. By doing so, the handling process in the handling room 3a is mostly performed at the front end of the transport path, and the handling process load is small in the latter half, so the threshing work load becomes excessive with the introduction of all culms. Can be suppressed.

[Other Embodiments] As described above, the threshing work state switching means A is automatically switched and controlled, and the handling depth adjusting electric motor 20 is driven to the deepest handling side. However, if the short culm side detection sensor 21 detects the absence of grain culm, the control device activates an alarm buzzer (an example of alarm means) to alert the aircraft operator to the attention. Then, the operator may switch the manual switching switch connected to the control device to switch the threshing operation state switching means A.

As the culm length detecting means B for detecting whether or not the length of insertion of the cut grain culm into the handling chamber is equal to or less than a set value, instead of using the culling depth adjusting sensor as described above. As shown in FIG. 4, a dedicated culm length detection sensor 26 for detecting that the culm length is equal to or shorter than the set length may be configured on the front wall of the threshing device 3 on the side of the handle 3c.

The threshing operation state switching means A may be constructed as follows. As shown in FIG. 6 and FIG. 7, at the transfer position for the feed chain 12 from the vertical transfer device 11, the grain culm being delivered is forcibly pulled out and the whole culm is scraped into the handling port 3c of the threshing device 3 and transported. Crank type scraping device 2
7, the electromagnetic clutch 28 is provided in the transmission system for the crank type scraping device 27, and the handling depth adjusting electric motor 20 is driven to the deepest handling side. When the detection sensor 21 detects the absence of grain culm, the control device 23 controls the electromagnetic clutch 28 to switch from the disengaged state to the engaged state after a lapse of a predetermined transportation time. The culm may be thrown in so that the unprocessed residue does not occur. In this case, the threshing operation state switching means A is constituted by the crank type scraping device 27 and the electromagnetic clutch 28. As shown in FIG. 5, a disc cutter 2 for cutting the transport grain culm is provided at a position close to the feed chain 12 on the inner side of the handling chamber.
9 is provided by a slide mechanism 30 so as to be movable up and down, and when the above-mentioned short culm is detected, the disc cutter 2
The slide mechanism 30 may be controlled so that the grain culm is cut from the position where 9 is retracted downward to a cutting position where almost all culms are thrown into the handling chamber. Disk cutter 2
9 and the slide mechanism 30 constitute the threshing operation state switching means A.

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

[Brief description of drawings]

FIG. 1 is a side view of a front portion of a self-removing combine.

FIG. 2 is a side view showing threshing work state switching means.

FIG. 3 is a plan view of a pre-cutting processing unit.

FIG. 4 is a plan view showing a culm length detection sensor attached state

FIG. 5 is a front view showing a threshing work state switching means of another embodiment.

FIG. 6 is a side view showing threshing work state switching means of another embodiment

FIG. 7 is a front view showing threshing work state switching means of another embodiment.

[Explanation of symbols]

 3a Handling room 10 Clamping / conveying device 23 Switching control means A Threshing work state switching means B Bole length detection means

Claims (3)

[Claims] 1. A self-removing combine, comprising a sandwiching and conveying device (10) for sandwiching and conveying the plant side of a cut grain culm and passing the tip side through the inside of the handling chamber (3a). A threshing operation state switching means (A) capable of switching between a state in which a sandwich culm is sandwiched and conveyed by the sandwiching and conveying device (10) and a state in which all the accumulated culms are inserted into the handling chamber (3a) can be switched. A self-removing combine. 2. A culm length detecting means (B) for detecting whether or not the insertion length of the cut culm conveyed by the sandwiching and conveying device (10) into the handling chamber (3a) is less than or equal to a set value. When the culm length detecting means (B) detects that the culm length is less than or equal to the set value, the threshing work state switching means (A)
The self-draining combine harvester according to claim 1, further comprising a switching control means (23) for automatically switching from the sandwiching and transporting state of the grain culms by the sandwiching and transporting device (10) to the all culm throwing state. 3. A culm length detecting means (B) for detecting whether or not the insertion length of the cut culm conveyed by the sandwiching and conveying device (10) into the handling chamber (3a) is less than or equal to a set value. 2. The self-removing combine harvester according to claim 1, further comprising: an alarm unit that issues an alarm when the culm length detecting unit (B) detects that the culm length is equal to or less than the set value.