JP2021027823A - Combine-harvester - Google Patents

Abstract

To provide a combine-harvester capable of preventing excessive load from being applied to a detection sensor and preventing the detection sensor from operating improperly in the combine-harvester comprising the detection sensor for detecting clogging of grains, at a discharge part side of a discharge auger tip end.SOLUTION: A combine-harvester comprises a thresher, a grain tank, and a discharge auger, where the discharge auger includes a cylindrical conveyance part whose base end side is supported by a machine body side so as to be able to turn left/right and to perform lifting/lowering operation, a cylindrical discharge cylinder provided at an opening part at the tip end side of the conveyance part, and a discharge guide part provided on the lower side of the discharge cylinder. The discharge cylinder includes a bracket for supporting a detection sensor for detecting clogging of the grains. The bracket is bent outward the discharge cylinder such that the detection sensor is disposed outside an inner periphery side of the discharge cylinder. The detection sensor is disposed at the inner periphery side of the discharge guide part that is overhung outward the inner periphery side of the discharge cylinder.SELECTED DRAWING: Figure 2

Description

The present invention relates to a combine provided with a detection sensor for detecting clogging of grains discharged to a discharge portion of a discharge auger.

A threshing device for threshing the grain harvested by the harvesting section, a grain tank for storing the grains threshed by the threshing device, and a discharge auger for discharging the grains in the grain tank to the outside of the machine. The discharge auger is provided with a tubular transport portion whose base end side is supported so that it can be swiveled left and right and can be raised and lowered on the Glen tank side, and an opening is formed on the lower side thereof by being provided on the tip end side of the transport portion. It has a tubular discharge part and a detection sensor that detects that the discharge part is clogged with grains when the discharge part is stuck in a pile of grains at the discharge destination, and is located on the lower side of the discharge part. The combine described in Patent Document 1 in which a discharge guide portion for extending the discharge portion downward is separately provided is conventionally known.

In the combine of the above document, since the discharge guide portion is composed of a flexible member, even when the discharge portion is clogged with grains, the clogging of the grains in the discharge portion can be easily cleared. At the same time, it is possible to efficiently prevent a situation in which members such as the transport racen in the transport section are deformed due to clogging of the grains, but a large amount of grains discharged from the discharge section are sent to the detection sensor in the discharge section. There is a problem that the detection sensor may not operate normally due to the collision.

JP-A-2007-174929

The present invention prevents an excessive load from being applied to the detection sensor or malfunction of the detection sensor in a combine provided with a detection sensor for detecting grain clogging at the discharge portion side of the tip of the discharge auger. The challenge is to provide a combine that can be used.

In order to solve the above problems, the present invention firstly comprises a threshing device for threshing the grain harvested by the cutting unit, a grain tank for storing the grains threshed by the threshing device, and the grain tank. The discharge auger is provided with a discharge auger for discharging the grains inside the machine, and the discharge auger has a tubular transport portion whose base end side is supported on the machine body side so as to be able to turn left and right and move up and down, and the transport portion. In a combine having a tubular discharge cylinder provided in the opening on the tip side of the pipe and a discharge guide portion provided on the lower side of the discharge cylinder, clogging of the grains is detected on the discharge cylinder side. A bracket for supporting the detection sensor is provided, and the bracket is bent toward the outside of the discharge cylinder so that the detection sensor is arranged on the outer side of the inner peripheral surface side of the discharge cylinder, and the detection sensor is formed. Is characterized in that it is arranged on the inner peripheral surface side of the discharge guide portion extending outward from the inner peripheral surface side of the discharge cylinder.

Secondly, the discharge guide portion is configured by attaching a flexible strip-shaped member in a state of being wound in an annular shape along the discharge cylinder, and the inner circumference of a position where the end sides of the strip-shaped member are wrapped with each other. It is characterized in that the bracket and the detection sensor are arranged on the surface side.

Third, the bracket has a base end portion that is mounted and fixed along the rear surface side of the discharge cylinder by bending and forming a plate-shaped member extending in the vertical direction in a crank shape, and the base end portion. A bent portion whose lower end side extends rearward and a mounting portion extending downward from the bent portion to which the detection sensor is attached are formed, and the bent portion causes the upper side of the detection sensor to be raised. It is characterized by being configured to be covered.

By arranging the detection sensor for detecting the clogging of grains in the discharge cylinder on the outside of the inner peripheral surface of the discharge cylinder by the bracket, it becomes difficult for the grains, foreign substances, etc. to hit the detection sensor. Therefore, it is possible to prevent the detection sensor from malfunctioning or being damaged.

Further, the discharge guide portion is configured by attaching a flexible strip-shaped member so as to be wound in an annular shape along the discharge portion, and the inner peripheral surface side at a position where the end portions of the strip-shaped member are wrapped with each other. According to the one in which the bracket and the detection sensor are arranged, the detection sensor is provided because the band-shaped member also functions as a protective cover for the detection sensor by being provided inside the flexible member. It is not necessary to separately provide a member to be protected, and the bracket to be attached while pushing away the strip-shaped member can be easily attached.

The bracket has a base end portion that is mounted and fixed along the rear surface side of the discharge portion by bending and forming a plate-shaped member extending in the vertical direction in a crank shape, and a lower end portion of the base end portion. A bent portion whose side extends rearward and a mounting portion which extends downward from the bent portion and to which the detection sensor is attached are formed, and the upper side of the detection sensor is covered by the bent portion. According to the above-described sensor, since the upper side of the detection sensor attached to the bracket is covered by the bent portion, grains, straw debris, etc. falling from the discharge portion on the detection sensor Can be effectively prevented from accumulating.

It is an overall side view of the head-feeding combine to which this invention was applied. It is the main part side sectional view which showed the internal structure of the auger tip. It is the bottom view of the main part which showed the discharge part. It is an assembly perspective view which showed the discharge part.

FIG. 1 is an overall side view of a head-feeding combine to which the present invention is applied. In the illustrated combine, a threshing section (threshing device) 3 is installed on the left half of the machine frame 2 supported by a pair of left and right crawler type traveling devices 1 and 1, and a cabin is placed on the front side of the right half of the machine frame 2. 4 is provided, and a grain tank 6 is arranged on the rear side of the cabin 4 to form a traveling machine body 7, and a pretreatment part (cutting part) 8 for cutting grain culms is provided in front of the traveling machine body 7. It is connected and supported so that it can be driven up and down.

During the forward traveling of the traveling machine body 7, the grain culms cut by the pretreatment section 8 are backward transported to the threshing section 3 side by the transport device 9 on the pretreatment section 8 side and passed to the feed chain 11 in the front-rear direction. Is done. The culm that is rearwardly transported along the threshing section 3 by the feed chain 11 is handled (threshed) by a handling cylinder (not shown) that is rotationally driven in the threshing section 3 to discharge straw. The culm that has become the straw is discharged from the rear end side of the traveling machine body 7 to the outside of the machine. On the other hand, the processed product that has been threshed is sorted into grains such as paddy and other discharges such as straw waste, and the grains are stored in the grain tank 6.

The grains contained in the grain tank 6 are discharged to the outside of the machine by an auger (discharge auger) 12 having a base end supported on the rear right side of the traveling machine body 7 (see FIG. 1).

The auger 12 has a vertical cylinder 13 supported on the right side of the rear end portion of the traveling machine body 7 so as to be rotatable around its own axis, and a base end portion swings up and down at the upper end portion of the vertical cylinder 13. It is composed of a transport cylinder 14 that extends linearly from the base end portion to the tip end portion that is possibly supported, and a discharge portion 16 formed on the tip end side of the transport cylinder 14. That is, the auger 12 whose base end side is supported so that the posture can be changed is horizontally swiveled by rotating left and right around the vertical axis 13, and the discharge cylinder 14 is moved with respect to the vertical axis 13. It is configured to be raised and lowered by swinging up and down.

As a result, the grains stored in the grain tank 6 are upwardly transported to the base end side of the transport cylinder 14 by the vertically rising spiral (not shown) provided in the vertical cylinder 13. The grains transported to the base end side of the transport cylinder 14 are transported to the tip end side of the transport cylinder 14 by the transport racen 17 extending in the axial direction in the transport cylinder 14. The grains transported by the transport spiral 17 are discharged from the discharge unit 16 to the outside of the machine.

The discharge portion 16 is provided so as to extend downward from the opening 18 formed on the lower surface side of the front end of the transport cylinder 14, and is transported to the tip end side of the auger 12 by the transport cylinder 14. Guide the grains to fall (discharge) directly below the opening 18 (see FIG. 2).

Further, the discharge unit 16 is provided with a camera 30 for photographing the side directly below the discharge unit 16 from which grains are discharged, and a lighting 21 for illuminating the side directly below the discharge unit 16. It is configured so that the position and situation where grains are discharged from the control unit side in the cabin 4 can be confirmed (see FIGS. 2 and 3 and the like).

Further, on the inner side of the discharging portion 16, a guide mechanism 22 for guiding the grains falling from the opening 18 so as to be smoothly discharged to the outside of the machine, and the grains in the discharging portion 16 A clogging sensor (detection sensor, paddy sensor, detector) 23 for detecting the presence or absence of clogging is provided. The specific configuration of the discharge unit 16 will be described below.

Next, the configuration of the auger on the discharge portion side will be specifically described with reference to FIGS. 2 to 4. FIG. 2 is a cross-sectional view of the main part showing the internal structure of the tip of the auger, FIG. 3 is a bottom view of the main part showing the discharge part, and FIG. 4 is an assembly perspective view showing the discharge part. ..

The discharge portion 16 has a frame-shaped discharge cylinder 24 attached and fixed to the opening 18 on the lower surface side of the tip of the transport cylinder 14, and a frame-shaped discharge portion 24 attached so as to extend the discharge portion 24 to the lower side. The discharge guide unit 26, the lighting 21, the camera 30, the guide mechanism 22, and the clogging sensor 23 are provided.

The discharge cylinder 24 is a metal member formed in a square frame shape that is open in the vertical direction, is provided so as to extend downward from the opening 18, and uses a fixing bolt 27. It is mounted and fixed to the transport cylinder 14 side. At this time, a pair of front / rear (left / right) fixing holes 28, 28 to which the discharge guide portion 26 is attached are bored on the peripheral surface (left / right side surface and front / rear surface) side of the lower portion of the discharge cylinder 24.

The discharge guide portion 26 is formed in an annular shape (cylindrical shape) by winding a flexible strip-shaped member (elastic member) around the lower peripheral edge side of the discharge cylinder 24, and in this state, the discharge guide portion 26 is formed through the fixing hole 28. By being bolted to the discharge cylinder 24 side, it is configured to be attached to the discharge unit 24 while maintaining the tubular shape. A fixing hole 26a for bolting to the discharge cylinder 24 side is bored on the upper peripheral side of the discharge guide portion 26 via the fixing hole 28 (see FIG. 4 and the like).

At this time, the strip-shaped member is composed of one single member formed longer than the peripheral surface length of the discharge cylinder 24, and the strip-shaped member has a start end side and an end side of the discharge cylinder 24. It is configured to overlap (wrap) on the rear surface side, and to fasten the end sides of the wrapped band-shaped members together to the fixing holes 28A and 28A on the rear surface side of the discharge cylinder 24 (FIGS. 2 to 4). reference).

That is, the tubular discharge portion 16 extending downward from the opening 18 is formed of metal by the discharge cylinder 24 on the upper side thereof, while the lower side thereof is formed by the discharge guide portion 26. It is composed of flexible elastic members.

Incidentally, the discharge guide portion 26 may be a rubber member or a resin member such as nylon resin, and is not limited to a flexible member or a flexibly deformable member.

The camera 30 is mounted and fixed at a position closer to the left and right sides (right in the illustrated example) of the rear surface of the discharge cylinder, and the camera cover 31 that covers the left and right sides, the upper surface, and the rear surface side of the camera is It is provided. The camera cover 31 is configured so that the upper surface side thereof is inclined downward toward the rear so that grains, straw debris, and the like can be slid off without being deposited on the sliding cover.

The lighting 21 is provided on the front end side of the auger 12 by a U-shaped mounting arm 32 extending forward from the front side of the discharge cylinder 24, which is firmly formed of a metal member. The illumination 21 is configured to illuminate the side directly below the opening (exhaust portion).

Further, a power cable 33 is connected to the lighting 21, and the power cable 33 is mounted on the transport cylinder 14 by a plurality of wiring fixing supports 34 provided along the upper surface side of the transport cylinder 14 of the auger 12. It is attached to (see Fig. 2).

The guide mechanism 22 includes a plate-shaped opening / closing body 36 pivotally supported on the front surface side of the inner surface of the discharge cylinder 24 so as to be vertically swingable, and inclined plates 37 provided on the left and right side surfaces and the rear surface of the inner surface of the discharge cylinder 24. When the grains dropped from the opening 18 are discharged from the discharge section 16, the grains can be guided so as not to disperse in the plane direction (see FIGS. 2 and 3).

The inclined plates 37 are a pair of left and right side inclined plates 37A and 37A attached so as to incline downward from the left and right side surface sides of the discharge cylinder 24 toward the center of the discharge cylinder 24, and the rear surface of the discharge cylinder 24. It has a rear inclined plate 37B attached so as to incline downward from the side toward the center of the discharge cylinder 24, and the inclined plates 37A and 38B are arranged directly below the opening 18.

The inclined plates 37A, 37A, and 37B are arranged in a U shape so as to cover the inside of the peripheral edge of the opening 18 when viewed from the bottom. As a result, the inclined plates 37A, 37A, 37B can guide the grains that have fallen from the peripheral side of the opening 18 so as to be dropped from the central side of the discharging portion 16 (see FIG. 3 and the like). ..

The opening / closing body 36 is pivotally supported on the front end side of the discharge cylinder 24 via a support shaft 38 so as to be vertically swingable, and the tip end side thereof extends toward the center (rear) in the discharge cylinder 24. It is installed. As a result, the opening / closing body 36 is configured to be able to switch its posture by swinging up and down around the support shaft 38.

Specifically, the opening / closing body 36 opens the entire discharging portion 16 by swinging forward about the support shaft 38 and bringing the entire opening / closing body 36 into contact with the front surface side of the discharge cylinder 24. The grains that have fallen from the opening 18 (each inclined plate 37) are discharged from a predetermined discharge position by the retracted posture (see FIG. 3) and the tilting from the support shaft 38 toward the rear and downward. It is configured so that it can be switched to a guide posture (see FIG. 2) for adjusting the position.

At this time, the opening / closing body 36 is urged toward the upper side (opening 18) by providing the support shaft 38 with the elastic member (torsion spring) 39, and is urged from the auger (opening). The opening / closing body 36 is configured to be tilted downward according to the amount of grains discharged. That is, when the amount of grains discharged is small, the opening / closing body 36 can adjust the front-rear position of the grains discharged from the discharging unit 16, while the amount of grains discharged has increased. In this case, the weight of the grains pushes the torsion spring 39 downward against the urging force of the torsion spring 39, so that the opening / closing body 36 can be prevented from being damaged.

Next, the clogging sensor and the mounting mode of the clogging sensor will be described with reference to FIGS. 2 to 4. The clogging sensor 23 includes a sensor device 41 for detecting that grains have entered the discharge section 16 from an opening on the lower end side of the discharge section 16 (discharge guide section 26), and the sensor device 41 for the discharge tube. A support bracket 42 that is attached and supported on the 24 side is provided, and grains are continuously discharged to a predetermined discharge destination by the auger 12 and deposited at the discharge destination, so that the grains discharged from the auger 12 are discharged from the discharge unit 16. It is configured to detect that the inside of the discharge unit 16 is clogged without falling (discharging) from the discharge unit 16 and surely prevent the clogging of grains in the discharge unit 16 from reaching the opening 18 side. (See Fig. 2 and Fig. 3 etc.).

The sensor device 41 is a sensor such as a detection surface 43 on which a surface in contact with grains clogged in the discharge unit 16 is formed, and a limit switch or the like that detects that a pressure equal to or higher than a predetermined value is received from the detection surface 43. It is provided with a sensor main body 44, a mounting tool 46 to which the sensor main body 44 and the detection surface 43 are attached and attached to the support bracket 42 side, and a wiring 47 connected to the sensor main body 44.

The support bracket 42 is a plate-shaped member extending in the vertical direction and bent in a crank shape, and has a fixing portion (base end portion) 42a bolted to the rear surface side of the discharge cylinder 24 and the support bracket 42. A bent portion 42b in which the lower end side of the fixed portion 42a is bent rearward and a mounting portion 42c extending downward from the rear end side of the bent portion 42b to which the sensor device 41 is attached are formed, and the fixing portion is formed. A clamp 48 for fixing the wiring 47 is provided on the 42a (upper end) side (see FIGS. 2 and 4 and the like).

As a result, in the support bracket 42, the sensor device 41 is mounted on the mounting portion 42c side, so that the upper portion of the sensor device 41 (the front-rear width of the sensor device 41) is within the front-rear width of the bent portion 42b. It is formed so that it fits (see Fig. 2).

According to the configuration, the clogging sensor 23 (the sensor device 41) uses the support bracket 42 to view the outside of the rear surface of the discharge cylinder 24 and the inner peripheral surface of the discharge guide portion 26 (specifically). Is mounted and supported between the inside of the rear surface). In other words, the clogging sensor 23 is configured to be arranged on the rear side of the rear surface of the discharge cylinder 24 (see FIGS. 2 and 3).

At this time, unlike the discharge cylinder 24, the rear side of the discharge guide portion 26 is made of a flexible material so that the rear side of the discharge guide portion 26 projects to the rear of the sensor device 41 from the rear side of the discharge cylinder 24. It is formed by extending it.

Specifically, when the discharge guide portion 26 is provided on the lower side of the discharge cylinder 24, the clogging sensor 23 is located between the rear outer surface side of the discharge cylinder 24 and the end side of the strip-shaped member. The discharge guide portion 26 and the support bracket 42 are fastened together to the rear outer surface side of the discharge cylinder 24 with the support bracket 42 (fixing portion 42a) sandwiched therein, so that the discharge guide portion 26 and the support bracket 42 are mounted and fixed.

At this time, the clogging sensor 23 (sensor device 41) is moved to the discharge guide portion 26 by pushing the discharge guide portion 26 backward by the support bracket 42 (bending portion 42b and the mounting portion 42c) and bending the discharge guide portion 26. It can be arranged on the inside and on the rear side of the rear part of the discharge cylinder 24.

According to the above configuration, since the clogging sensor 23 is arranged outside the range of the opening 18 (specifically, the rear outside) in the bottom surface (planar) view, the clogging sensor 23 is arranged from the discharge portion 16 (opening 18). When the grains are smoothly discharged, it is possible to efficiently prevent the grains from coming into contact with the clogging sensor 23 and thereby malfunction of the clogging sensor 23.

Further, according to the support bracket 41 and the discharge guide portion 26, the upper side and the back side of the sensor device 41 can be covered (covered) without providing a large gap, so that the sensor device 41 is covered with the sensor device 41. It is also possible to prevent the accumulation of grains and straw debris discharged from the opening 18.

Further, since the discharge guide portion 26 also functions as a protective cover that covers the outer peripheral side of the clogging sensor 23 other than the detection surface 43 side so as to be in close contact with the clogging sensor 23, it is necessary to separately provide a member for protecting the clogging sensor 23. The number of parts can be reduced.

By the way, the clamp 48 is provided on the upper end side of the support bracket 42 (fixing portion 42a) so as to be exposed on the upper side of the discharge guide portion 26 that sandwiches the support bracket 42. As a result, the clamp 48 can be arranged on the rear outer surface side of the discharge cylinder 24 in a state of being firmly fixed to the discharge cylinder 24 side. The wiring 47 connected to the sensor body 44 can be positioned on the rear side of the discharge unit 16. (See Fig. 2 etc.).

As a result, the wiring 47 connected to the sensor main body 44 is arranged toward the upper end side of the transport cylinder 14 above the discharge guide portion 26 via the lower end side of the opening at the rear portion, and is arranged by the clamp 48. The wiring 47 can be held on the rear surface side of the discharge cylinder 24. The wiring 47 is extended along the auger 12 to the rear side of the traveling machine body together with the power cable 33 at the upper end of the transport cylinder 14.

Further, the sensor device 41 (sensor body 44) may be able to detect that the grains discharged from the discharge unit 16 are about to be clogged in the discharge unit 16 without falling, and the detection. In addition to a limit sensor (detection switch) that detects that a load of a predetermined value or more is applied to the surface 43, a pressure sensor that detects the pressure received by the detection surface 43, and an impact sensor that detects the impact force received by the detection surface 43. Etc. may be used.

In the illustrated example, the support bracket 41 is formed of a metal plate-shaped member, but may be formed of an elastic member such as a synthetic resin. According to this configuration, even when an unexpected external force is applied to the clogging sensor 23, it is possible to prevent the clogging sensor 23 from being damaged.

3 Threshing section (threshing device)
6 Glen tank 8 Pretreatment part (cutting part)
12 augers (emission augers)
14 Conveyance cylinder (conveyance part)
23 Clog sensor (detection sensor)
24 Discharge cylinder 26 Discharge guide 42 Support bracket (bracket)
42a Fixed part (base end part)
42b Bent part 42c Mounting part

Claims (3)

A threshing device that threshes the culm cut by the cutting department,
A grain tank for storing grains that have been threshed by the threshing device, and
It is equipped with a discharge auger for discharging the grains in the grain tank to the outside of the machine.
The discharge auger includes a tubular transport portion whose base end side is supported so as to be able to turn left and right and move up and down on the machine body side, and a tubular discharge cylinder provided in an opening on the tip side of the transport portion. In a combine having a discharge guide portion provided on the lower side of the discharge cylinder,
A bracket for supporting a detection sensor for detecting the clogging of the grains is provided on the discharge cylinder side.
The bracket is bent toward the outside of the discharge cylinder so that the detection sensor is arranged on the outer side of the inner peripheral surface side of the discharge cylinder.
The detection sensor is a combine that is arranged on the inner peripheral surface side of the discharge guide portion that extends outward from the inner peripheral surface side of the discharge cylinder. The discharge guide portion is configured by attaching a flexible strip-shaped member in a state of being wound in an annular shape along the discharge cylinder, and is located on the inner peripheral surface side at a position where the end sides of the strip-shaped member are wrapped with each other. The combine according to claim 1, wherein the bracket and the detection sensor are arranged. The bracket has a base end portion that is attached and fixed along the rear surface side of the discharge cylinder by bending and forming a plate-shaped member that extends in the vertical direction in a crank shape, and a lower end portion of the base end portion that is rearward. A bent portion extending toward the surface and a mounting portion extending downward from the bent portion to which the detection sensor is attached are formed, and the bent portion covers the upper side of the detection sensor. The combine according to any one of the configured claims 1 or 2.

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