JP2010246458A - Combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rake-in type combine harvester capable of automatically preventing a spill of reaped grain culm from a reaping frame outside of the same in the case of turning the machine body at a levee side, etc. <P>SOLUTION: The combine harvester is provided with a controller to control lifting or lowering of a rake-in reel to a preset level based on a detection value of a vertical reel position sensor to detect a vertical position of the reel, and move the rake-in reel forward for a prescribed time interval when the vertical position of the rake-in reel detected by the vertical reel position sensor is higher than an upper limit position of a preset range and then lower the rake-in reel to a prescribed position based on the detection value of the vertical reel position sensor. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a combine which is an agricultural grain harvesting machine.

The rake-type combine that is the subject of the present invention, when the machine is driven by a traveling device, rakes the culm with a scraping reel that rotates the cereals in the field, harvests the culm with a cutting blade, and collects it with an auger And is supplied to the threshing chamber of the threshing device by the conveying device and threshed.
At this time, the front / rear position and the vertical position of the scraping reel with respect to the cutting frame are adjusted in order to improve the working efficiency of the scraping reel according to the state of the grain straws in the field.

  Also, a mounting shaft in the left-right direction is provided on the lower surface of the bottom plate of the basket body integrated with the cutting frame, and a front sensing plate is rotatably attached to the mounting shaft to the left and right, and a plate is attached to the left and right front sensing plates. Since the cutting height sensor is provided to detect the amount of rotation, when the cutting part descends and the front sensing plate comes into contact with the field, it rotates about the mounting shaft, and this causes the cutting height sensor to move to the cutting part. The height is detected, and the cutting height control for making the height of the cutting portion constant by this signal is performed.

JP 2001-78540 A

  In the invention described in the above-mentioned patent document 1, in the scraping type combine having the above-described configuration, the planted culm in the field is raked with the rake reel, and the harvested culm in the basket body integrated with the reaping frame In order to prevent the machine body from spilling out from the basket body integral with the cutting frame when the machine turns, etc., manually push down the scraping reel and scrape the grains inside the basket body integral with the cutting frame. I was trying to pinch it between the reel and basket.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a rake-type combine that can automatically prevent spilled cereals in a basket body from spilling outside from the reaping frame when the machine turns at the edge of the basket. It is.

The problems of the present invention are solved by the following means.
According to the first aspect of the present invention, a scraping reel (8) for scraping the culm and a support member (15) for supporting the scraping reel (8) so as to be movable up and down with respect to the cutting frame (5). And an elevating device (17) for moving the support member (15) up and down to raise and lower the take-up reel (8), and a movement for moving the take-up reel (8) in the front-rear direction with respect to the support member (15). The cutting part (4) having a member (20, 21), a reel lifting / lowering position sensor (62) for detecting the lifting / lowering position of the take-up reel (8), and a scraping value based on the detection value of the reel lifting / lowering position sensor (62). The control for raising and lowering the raising / lowering position of the insertion reel (8) to the set position and the reel raising / lowering position sensor (62) detect that the raising / lowering position of the take-up reel (8) is raised from the upper limit position of the setting range. Advance the reel (8) for a predetermined time, A combine the vertical position is provided a control device (60) for performing control to lower the position of the scraping reel (8) on the basis of the detected value of Lumpur vertical position sensor (62).

  According to invention of Claim 2, the pick-up reel (8) which scrapes a grain candy, and the supporting member (15) which supports this pick-up reel (8) to a cutting frame (5) freely movable up and down. An elevating device (17) for moving the support member (15) up and down to raise and lower the take-up reel (8), and a moving member (20 for moving the take-up reel in the front-rear direction with respect to the support member (15)) 21), a cutting part (4) having a reel lifting / lowering position sensor (62) for detecting the lifting / lowering position of the take-up reel (8), and a scraping reel ( 8) When the raising / lowering position of the take-up reel (8) is detected to be higher than the upper limit position of the setting range by the control for raising and lowering the raising / lowering position to the set position and the reel raising / lowering position sensor (62). Ascending the reel while moving 8) forward for a predetermined time It is combined in which a control device (60) to the vertical position performs control to lower to a predetermined position of the scraping reel (8) on the basis of the detected value of the position sensor (62).

  According to the first aspect of the present invention, when the combine turns after scraping the cereal with the scraping reel 8, the scraping reel 8 is moved forward as much as possible and then lowered to scratch the front side of the cutting frame 5. The harvesting loss of the harvested cereal can be reduced by blocking with the insert reel 8 and preventing the cereal from spilling out of the harvesting frame 5 when the combine turns.

  According to the second aspect of the present invention, when the combine turns after scraping the cereal with the scraping reel 8, the scraping reel 8 is moved downward as much as possible to lower the front side of the cutting frame 5. The harvesting loss of the harvested cereal can be reduced by blocking with the insert reel 8 and preventing the cereal from spilling out of the harvesting frame 5 when the combine turns.

The right view of the combine of one Example of this invention is shown. The right view of the moving mechanism of the take-in reel of the combine of FIG. 1 is shown. The top view of the moving mechanism of the take-in reel of the combine of FIG. 1 is shown. The side view of the grounding sensor attachment part of the cutting part of the combine of FIG. 1 is shown. The control block diagram of the harvesting part of the combine of FIG. 1 is shown. The flowchart of the up-and-down movement control and back-and-forth movement control of the take-in reel of the harvesting part of the combine of FIG. 1 is shown. The flowchart of the cutting height control of the cutting part of the combine of FIG. 1 is shown.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 shows a right side view of a combine according to an embodiment of the present invention, FIG. 2 shows a side view of a take-up reel portion of the combine of FIG. 1, and FIG. 3 shows a combine reel of the combine of FIG. A plan view of the forward / backward moving mechanism is shown, and FIG. 4 is a side view of the cutting ground sensor mounting portion of the cutting portion of the combine of FIG. In this specification, the left and right directions are referred to as left and right, respectively, and the front and rear directions are referred to as front and rear, respectively.

  The combiner body frame 1 and the traveling device 2 are provided below the body frame 1, a threshing device (not shown) is provided on the upper left side of the body frame 1, and the cutting unit 4 is provided on the front side of the threshing device. Grains harvested by the reaping unit 4, transported to the threshing device and threshed by the threshing device are stored in the Glen tank 43 and then discharged to the outside from the auger 44.

  The cutting part 4 is a part of the cutting frame 5 formed of a rectangular frame in plan view and a part of the cutting frame 5 integrally formed with the cutting frame 5 with synthetic resin. A basket body 6 and a weed body 7 supported in front of the basket body 6 are provided, and a scraping reel 8 for scraping the cereals weed by the weeding body 7 is provided. 14 is provided, and an auger 44 for collecting the harvested culms is provided on the rear side of the cutting blade 14. The rear end of the cutting frame 5 is connected to the start end of the transport device 23, and the end of the transport device 23 is connected to the threshing chamber (not shown) of the threshing device. Further, the cutting unit 4 is provided with a cutting unit upper and lower cylinders (not shown) between the cutting frame 5 or the conveying device 23 and the body frame 1, and the cutting unit 4 is configured to be vertically movable by expansion and contraction of the cylinders. Then, a cutting height sensor 66 (see FIG. 5) is provided at an appropriate position, and the height of the cutting unit 4 is detected by this sensor 66.

  Further, a rotation center shaft (not shown) extending in the left-right direction is provided at the center portion of the take-up reel 8, and a pair of reel mounting members 9 are fixed to the left and right end portions of the rotation center shaft. The reel mounting member 9 is provided with a plurality of arm rods 10 projecting radially about the rotation center axis, and the tip portions of the adjacent arm rods 10 are connected to each other by reinforcing rods 11 to form a polygonal shape as a whole. Constitute. A base portion of the reel tine 12 is pivotally supported at the tip of each armband 10 so as to be rotatable. Reel mounting members 9 provided at the left and right ends of the lateral rotation center axis of the take-up reel 8 are rotatably supported by boss portions 13, respectively. The boss portions 13 are formed by a pair of left and right reel support arms (support members) 15. The reel support arm 15 is slidably attached to the front side portion in the longitudinal direction (the longitudinal direction of the machine body). The sliding of the boss portion 13 on the reel support arm 15 is performed by the rod 21 and the reel front / rear arm 20. That is, as shown in the plan view of FIG. 3, the base of a reel front / rear arm 20 that is rotated in the front / rear direction by a reel front / rear motor 18 is attached to the reel support arm 15 so as to be able to rotate back and forth. A rod 21 connects the upper end portion of the arm 20 and the boss portion 13.

The reel support arm 15 is pivotally supported by the cutting frame 5 so as to be movable up and down about the rotation shaft 15a, and the intermediate portion of the reel support arm 15 is supported by the cutting frame 5. Since it is supported at the tip of the attached reel vertical hydraulic cylinder 17, the vertical movement of the reel support arm 15 is performed by the reel vertical hydraulic cylinder 17, and the raising / lowering position of the take-up reel 8 is changed.
Note that a circle C in FIG. 2 indicates a locus drawn by the tip of the reel tine 12 when the take-up reel 8 rotates.

  When the reel front / rear motor 18 is operated with the above configuration, the reel front / rear arm 20 rotates in the front / rear direction, and the boss 13 slides on the reel support arm 15 in the longitudinal direction via the rod 21, The front and rear positions of the take-in reel 8 are changed.

The above configuration has the following effects.
When the vehicle is driven by the traveling device 2, the grain culm is scraped by the reel tines 12 of the scraping reel 8 that rotates the corn straw in the field, and the stock of the corn straw is weeded by the weeding body 7, Grains harvested and harvested by the cutting blade 14 are collected by the auger 44, supplied to the threshing chamber of the threshing device by the transport device 23, and threshed.

  At this time, in order to improve the working efficiency of the take-up reel 8 depending on the state of the rice straw in the field, the front / rear position of the take-up reel 8 with respect to the cutting frame 5 is adjusted by operating the reel front / rear motor 18 and the reel front / rear arm. The rotation of 20 is transmitted to the boss 13 via the rod 21 and the boss 13 is slid in the longitudinal direction on the reel support arm 15.

  Further, as shown in FIG. 4, a rotating shaft 31 in the left-right direction is provided on the lower surface of the bottom plate 6 a of the basket body 6 integral with the cutting frame 5, and the front sensing plate 32 is fixed to the rotating shaft 31 on the left and right. The rear end of the front sensing plate 32 and the front end of the rear sensing plate 33 are connected by an intermediate rotation shaft 34, and the front end of the rear detection plate 33 is rotated intermediately. A shaft 34 is pivotally mounted so as to be rotatable up and down. The front-side sensing plate 32 and the rear-side sensing plate 33 are made of a plate body having a rectangular shape in plan view having a width substantially equal to the cutting width, and are arranged so as to be respectively located on the left and right sides of the bottom plate 6a as shown in FIG.

The front end of the spring 30 is locked to the front side sensing plate 32, and the rear end of the spring 30 is locked to the rear side sensing plate 33. Therefore, the rear end of the rear sensing plate 33 is supported in a state of being pressed against the basket body 6 integrated with the cutting frame 5 by the spring 30, and the rear end of the rear sensing plate 33 is the bottom surface 6 a of the basket body 6. Is slidably touching.
The spring 30 is composed of a tension spring body, and the front sensing plate 32 is urged downward and the rear sensing plate 33 is energized so that the rear sensing plate 33 moves backward. It has a function to prevent entry into a farm scene and a function to prevent intrusion of mud into the upper surface side of the front sensing plate 32.

  As shown in FIG. 4, an arm 35 is fixed to a rotation shaft 31 protruding from a basket body 6 integral with the cutting frame 5, an engagement pin 36 is provided on the arm 35, and the engagement pin 36 has a bifurcated shape. An engagement groove 37 a formed in the contact 37 is engaged, and the base of the contact 37 is rotatably attached to the basket body 6 side by a shaft 39, and the contact on the basket body 6 side through rotation of the shaft 39. A grounding height sensor (position sensor) 40 that detects the grounding height of the cutting unit 4 by detecting the amount of rotation 37 is configured. A pair of grounding height sensors (position sensors) 40 are provided on the left and right sides of the aircraft. That is, when the cutting unit 4 is lowered and the front side sensing plate 32 comes into contact with the field, the arm 35 rotates about the rotating shaft 31 around the rotating shaft 31. The engagement pin 36 provided at the position moves, and the contact 37 is rotated by the movement of the engagement pin 36, whereby the ground contact height of the cutting portion 4 can be detected.

  The arm 35 is engaged with a front end of a spring 41 that urges the front side sensing plate 32 toward the downward rotation side, a rear end of the spring 41 is engaged with an adjustment bolt 42, and the adjustment bolt 42 is disposed on the basket body 6 side. Screw onto the fixed part. Therefore, when the spring 41 is pulled by the adjusting bolt 42, the elasticity of the spring 41 becomes strong, and the sensitivity of the contact height sensor 40 becomes dull. When the spring 41 is loosened, the sensitivity becomes sensitive.

  Further, in the combine of this embodiment, as shown in the control block diagram of FIG. 5, the reel control controller 60 is connected to the following input side device and output side device. A mowing / threshing lever (switch) 51 for operating the mowing unit 4 and the threshing unit, and a reel automatic selection switch 53, a reel raising switch 54, a reel for switching an automatic control function by a reel one-touch switch 52 described later to be valid / invalid. Reel one-touch for performing both the forward movement and lowering operations of the lowering switch 55, the reel advance switch 57, the reel reverse switch 58, and the like, and the scraping reel 8 attached to the main transmission lever (not shown). A switch 52 is connected to the input side of the reel controller 60. Further, on the input side of the reel controller 60, a power steering lever 61 for turning the combine, a cutting height sensor 66 for detecting the ground height of the cutting unit 4, and a reel raising / lowering position for detecting the raising / lowering position of the take-up reel 8 are provided. A sensor 62, a vehicle speed sensor 63, an engine speed sensor 65, and the like are connected.

  Further, on the output side, ascending and descending hydraulic valves 17a and 17b of the upper and lower hydraulic cylinders 17 that move the take-up reel 8 up and down, a relay 65a that drives the take-up reel 8 forward (drives the motor 18), and a relay 65b that moves backward. (Which drives the motor 18) is connected.

When the reel automatic touch switch 53 is switched to the effective side and the reel one-touch switch 52 for performing both the forward movement operation and the lowering operation of the pick-up reel 8 is turned on, the pick-up reel 8 is moved from the lower limit position of a predetermined lifting range. It has a function of raising it to a predetermined position when it is in the lower position, and lowering it to a predetermined position when the take-up reel 8 is located above the upper limit position of the lifting range.
The predetermined position at the time of raising and lowering the take-up reel 8 is detected by the reel raising / lowering position sensor 62.

  When the reel one-touch switch 52 is turned on, if it is detected that the take-up reel 8 is in a raised position from a predetermined position, an output for automatically making the take-up reel 8 move forward for a predetermined time is output. However, it can be lowered to a predetermined position.

  Thus, when the combine turns after scraping the cereal with the take-up reel 8, the take-up reel 8 is moved forward and then lowered to bring the cereal in the basket 6 integral with the cutting frame 5 into the take-up reel 8 The combine can be positioned at the work position after turning so that the cereal spillage does not fall out of the basket 6 due to the centrifugal force when the combine turns.

  The height of the take-up reel 8 may be changed by manual operation during the mowing operation, but the combine that has come to the work position after turning may be moved up and down by the fact that the take-up reel 8 is at a lower position than the predetermined position. Since it is detected by the position sensor 62, after the reel one-touch switch 52 is turned on to automatically raise the scraping reel 8 to a predetermined position, or by raising, the output is retracted for a predetermined time. Can return the take-up reel 8 to the proper take-up position of the cereal after turning.

FIG. 6 shows a flowchart of the above-described control for lowering / forwarding the take-up reel 8 before turning and the control for raising / retreating the take-up reel 8 after turning.
In the flowchart of FIG. 6, when the pick-up reel lifting / lowering position sensor 62 detects that the height of the pick-up reel 8 is higher than a predetermined high position in step a, the timer for adjusting the height of the pick-up reel 8 starts counting, While the count of the timer is not finished, an output for advancing the take-up reel 8 is output and the take-up reel 8 is arranged at an appropriate advance position. When the count of the timer ends, the take-up reel 8 is lowered to an appropriate position by the lowering output of the take-up reel 8.

  In step b, when the pick-up reel lifting / lowering position sensor 62 detects that the height of the pick-up reel 8 is lower than a predetermined low position, the timer for adjusting the height of the pick-up reel 8 is started, and the count of the timer is started. While this is not finished, the retracting output of the take-up reel 8 is output and the take-up reel 8 is arranged at an appropriate retracted position. When the count of the timer ends, the scraping reel 8 is lifted to an appropriate position by the lift output of the scraping reel 8.

  Further, when the cutting / threshing lever 51 is turned on and the reel automatic selection switch 53 is turned on, the ascending / descending position of the cutting unit 4 is detected by the cutting height sensor 66, and the height of the cutting unit 4 is a height below a predetermined value. When the cutting height sensor 66 detects that the height is suitable for cutting, the scraping reel 8 is lowered to a height suitable for scraping the cereal. A flowchart of this control is shown in FIG.

  In the flowchart of FIG. 7, a predetermined high position is stored in the memory of the controller 60 in step a, and the detected value of the cutting height sensor 66 is lower than the predetermined low position of the stored height of the cutting unit 4. Is small, the take-up reel 8 is raised and placed at an appropriate position. Further, when the height position of the scraping reel 8 is higher than the stored high position, the storage of the stored high cutting height position is canceled, and the low cutting height position is determined. Remember.

  Further, when the detected value of the cutting height sensor 66 is larger than the predetermined height position of the height of the cutting unit 4 in step b, when the low position of the cutting height is stored, the height of the scraping reel 8 is stored. If the position is higher than the low position, the take-up reel 8 is lowered and placed at an appropriate position. Further, when the height position of the scraping reel 8 is higher than the low position, the storage of the stored low cutting height position is canceled and the high cutting height position is stored.

  In addition, when a handling depth sensor for detecting the handling depth of the cereal in the threshing portion of the combine is installed with a self-removable mowing portion, the handling depth is not changed without changing the mounting position of the handling depth sensor. In a combine with a depth adjustment sensitivity adjustment unit (for example, a dial) that can change the height position in the cockpit, the change of the treatment depth position is determined by changing the distance from the treatment depth sensor to the reflecting surface (the thickness of the grain ) Can be changed.

  In addition, when measuring the distance from the handle depth sensor to the reflecting surface and controlling the handle depth, the filter processing is used to calculate the appropriate distance without reacting to each leaf or ear. Is required. If the filter processing is performed uniformly with respect to the vehicle speed, even if there is no problem in normal continuous work, it responds to each leaf and ear and becomes shallow handling in low speed work to harvest grains such as lying down There is a problem, but it is a depth sensor that detects the distance from the sensor to the measurement surface (layer thickness of the cereal). Filter processing with different cut-off frequencies is performed, and the processing value used for control is set to the vehicle speed or transport speed By changing accordingly, the above problem can be solved.

DESCRIPTION OF SYMBOLS 1 Airframe frame 2 Traveling apparatus 4 Cutting part 5 Cutting frame 6 Basket body 6a Bottom plate 7 Weeding body 8 Scraping reel 9 Reel mounting member 10 Arm bar 11 Reinforcement bar 12 Reel tine 13 Boss part 14 Cutting blade 15 Reel support arm 15a Rotation Shaft 17 Reel vertical hydraulic cylinders 17a, 17b Hydraulic valve 18 Reel front / rear motor 20 Reel front / rear arm 21 Rod 23 Transfer device 30 Spring 31 Rotating shaft 32 Front sensing plate 34 Intermediate pivot shaft 33 Rear sensing plate 35 Arm 36 Engagement Joint pin 37 Contact 37a Engaging groove 39 Shaft 40 Grounding height sensor (position sensor)
41 Spring 42 Adjustment bolt 43 Glen tank 44 Auger 51 Cutting / threshing lever (switch)
52 Reel one-touch switch 53 Reel automatic selection switch 54 Reel up switch 55 Reel down switch 57 Reel forward switch 58 Reel reverse switch 60 Reel controller 61 Power steering lever 62 Reel elevating position sensor 63 Vehicle speed sensor 65 Engine speed sensor 65a, 65b Relay 66 Cutting height sensor

Claims (2)

A scraping reel (8) for scraping the cereals, a support member (15) for supporting the scraping reel (8) with respect to the cutting frame (5), and a support member (15) An elevating device (17) for moving the pick-up reel (8) up and down, a moving member (20, 21) for moving the pick-up reel (8) in the front-rear direction with respect to the support member (15), and a pick-up A cutting part (4) provided with a reel lifting position sensor (62) for detecting the lifting position of the reel (8);
Based on the detection value of the reel lifting / lowering position sensor (62), the raising / lowering position of the take-up reel (8) is raised and lowered to the set position, and the raising / lowering position of the take-up reel (8) is set by the reel raising / lowering position sensor (62). When it is detected that the position has risen from the upper limit position, the take-up reel (8) is moved forward for a predetermined time, and then the take-up reel (8) is lifted and lowered based on the detection value of the reel lift position sensor (62). Control device (60) for performing control to lower the position to a predetermined position
Combine that is characterized by providing. A scraping reel (8) for scraping the cereals, a support member (15) for supporting the scraping reel (8) with respect to the cutting frame (5), and a support member (15) Elevating device (17) for moving up and down the pick-up reel (8), moving members (20, 21) for moving the pick-up reel back and forth with respect to the support member (15), and the pick-up reel (8 A cutting part (4) provided with a reel lift position sensor (62) for detecting the lift position of
Based on the detection value of the reel lifting / lowering position sensor (62), the raising / lowering position of the take-up reel (8) is raised and lowered to the set position, and the raising / lowering position of the take-up reel (8) is set by the reel raising / lowering position sensor (62). When it is detected that the position has risen from the upper limit position, the raising / lowering position of the take-up reel (8) is determined based on the detection value of the reel raising / lowering position sensor (62) while the take-up reel (8) is advanced for a predetermined time. (60) which performs control which lowers to a predetermined position
Combine that is characterized by providing.

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