JP2001008529A - Combine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem of the lowering of the sensing performance and the generation of overload on a thresher or generation of insufficient threshing caused by the decreased supplying depth in a combine having a structure to adjust the rotation on the axis along the moving direction of a culm resulting in remarkable variation of the distance between a sensing object and a guide cover in the case of adjusting by such means. SOLUTION: The traveling vehicle 2 of a combine having a traveling gear 1 is provided with a reap pretreatment apparatus 6 having a lower transfer apparatus 3 placed at the lower part of the pretreatment apparatus 6 to transfer the lower part of a reaped culm and an upper transfer apparatus 4 placed at the upper part of the pretreatment apparatus to transfer the upper part of the culm. An upper guide plate 5 to guide the upper part of the culm is placed above the upper transfer apparatus 4. A supplying depth sensor 8 positioning the tip end close to the upper guide plate 5 and having sensing members 7 arranged with intervals in a direction crossing the transfer direction of the culm and a vertical shaft 9 having axis nearly perpendicular to the upper guide plate 5 are placed above the upper transfer apparatus 4. The lateral position of the supplying depth sensor 8 is changeable around the vertical shaft 9 by the operation of an operation handle 33.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine provided with a supply depth sensor for detecting the position of the tip of a grain culm before supplying the cut culm in a field to a threshing apparatus.

[0002]

2. Description of the Related Art Conventionally, grain culms, for example, rice, have long and short grain culm lengths due to regional differences (for example, southwestern warm regions and Hokkaido), differences in varieties, differences in the degree of growth, and the like. In order to cope with the problem, a combine equipped with a handling depth control device for automatically controlling the handling depth according to the grain stalk length based on a detection signal from a feed depth sensor having a plurality of sensors has become widespread.

[0003]

However, conventionally, there has been considered a configuration in which the rotation is adjusted by the axis in the moving direction of the grain stalk, but when such adjustment is made, the sensor and the guide cover are adjusted. -Greatly changes the sensing performance. For this reason, the supply depth becomes shallow and an overload is generated in the threshing device, or the supply depth becomes shallow and the unhandled portion is generated.

[0004]

The present invention takes the following technical means in order to solve the above-mentioned problems. That is, a traveling body 2 provided with a traveling device 1 is provided with a lower transporting device 3 for transporting a lower portion of a cut culm at a lower portion, and an upper transporting device 4 and an upper transporting device 4 for transporting an upper portion of a grain culm at an upper portion. A cutting pre-processing device 6 provided with an upper guide plate 5 for guiding the upper portion of the grain stalk is provided on the upper side of the stalk. A supply depth sensor 8 having a sensor 7 arranged at intervals in a crossing direction and a vertical axis 9 having an axis substantially perpendicular to the upper guide plate 5 are provided. Reference numeral 8 denotes a combine having a configuration in which the position can be freely changed in the horizontal direction about the vertical axis 9.

[0005]

The traveling body 2 is moved by driving the rotating parts of the body such as the traveling device 1 and the harvesting operation is started. Then, the lower part of the grain stalk, ie, the side of the root of the stalk, cut by the cutting means of the pre-cutting device 6 is conveyed by the lower conveying device 3, and the upper part, ie, the upper part of the stalk, is guided by the upper guide plate 5. It is conveyed to one side by the upper conveying device 4, and at this time, the tip is supplied to the sensor 7 of the sensor 8, which outputs detection information as to whether or not the position of the tip is proper. .

In such an operation, there is a case where an operator wants to change the position of the supply depth sensor 8 depending on the condition of the grain stalk or the operation efficiency. At this time, when the worker performs a moving operation on the supply depth sensor 8, the supply depth sensor 8 moves laterally around the vertical axis 9 by one operation.

[0007]

[Effect] When supplying to the next process from the pre-cutting device 6,
Since the supply positions of the cereal stems can be aligned, work efficiency can be improved. Further, the supply depth sensor 8 is operated by one operation.
Since the position can be changed in the horizontal direction about the vertical axis 9, the distance between the lower end of the sensor 7 and the upper surface of the upper guide plate 5 becomes substantially constant, so that the detection performance by the sensor 7 is stabilized and workability is improved. improves.

[0008]

Embodiments of the present invention will be specifically described below with reference to the drawings. First, the structure of the combine A is equipped with a reaping unit B at the front of a traveling vehicle body 2 equipped with a traveling device 1.
Is equipped with a grain threshing section C, and a grain processing D having a grain tank, a grain discharging auger, and the like on the lateral side of the threshing section C, and a seat and an operation in front of the grain processing section D. An operation unit E provided with various levers and switches for performing operations is provided.

The traveling vehicle body 2 is constructed by winding a crawler 10 made of rubber material constituting the traveling device 1 around a driving sprocket 11 and a plurality of idler wheels 12, and sinks not only in a dry field but also in a wet field. It can be run without running. The traveling vehicle body 2 is a hydrostatic continuously variable transmission (hereinafter referred to as “HS”) driven by rotational power of an engine (not shown).
T ") and a transmission mechanism or the like for rotating a drive sprocket (not shown), so that the speed can be shifted and stopped, and the configuration is the same as that of the related art.

The threshing unit 13 of the threshing unit C has a feed chain 14, a handling chamber with a handling cylinder mounted on the upper side, a sorting chamber on the lower side, and a supplied harvesting culm. It is mounted on the traveling vehicle body 2 as a configuration for threshing and sorting. Next, the pre-cutting device 6 of the cutting unit B includes a cutting support frame 15, a plurality of weeding rods 18 attached to both lateral ends and a central portion of a lower gear box 37, and the like. The frame 16 is provided with a reaper 1 described later.
7. The cereal stem raising device 19, each cereal stem conveying device and the like are mounted.

The cutting pretreatment device 6 includes a weeding rod 1 at the lower front end.
8, a grain stalk raising device 19 having an inclined shape behind it,
A mowing device 17 is provided in the rear lower portion, and the aforementioned field
Between the starting end of the doughen 14 and a scraping transport device 20 for scraping the grain stalks cut by the reaper 17 backward, an upper transport device 4 for transporting the upper portion of the grain stalk arranged vertically and its lower portion And the lower transport device 3 for transporting the cereal stems in order.

The cutting pre-processing device 6 will be described. A mowing stand (not shown) is provided at the upper end of a traveling transmission case 42 provided on the traveling vehicle body 2 and transmitted to the traveling device 1.
A cutting input frame 43, which is disposed laterally on the cutting base and is provided with a pipe-shaped cutting support frame 15 inclined obliquely downward and forward, is rotatably supported. A cutting input pulley 44 is attached to the cutting input case 43 with one end protruding outward, and a cutting input shaft 46 to which a bevel gear 45 is fixed is provided at an intermediate portion. Further, the bevel gear 45 meshes with a bevel gear 48 attached to an upper shaft end of a mowing transmission shaft 47 provided inside the mowing support frame 15.

The rotational power output from the drive source (engine in the embodiment) is transmitted to the cutting input pulley 44 through appropriate transmission means, and the cutting input shaft 46,
The power is transmitted to the mowing transmission shaft 47 via the bevel gears 45 and 48, and the transmission means is transmitted from the mowing transmission shaft 47 to driving units such as the mowing device 17, the grain stalk raising device 19, and the scraping conveying device 20 of the mowing pre-processing device 6. This is a configuration for transmission through the transmission.

The cutting input gear 43 on the opposite side to the cutting input pulley 44 is provided with a rotatable gear or other transmission mechanism 50. -S 49 is detachably attached.
The gear 51 of the transmission mechanism 50 at the lower part of the cutting output gear box 49 is attached to the other end of the cutting input shaft 46, and from the upper part of the cutting output gear case 49 through the transmission mechanism through the culm. In this configuration, the lower transport device 3 that transports the lower portion of the image and the upper transport device 4 that transports the upper portion of the lower device are driven.

The upper guide plate 5 for guiding the upper part of the grain stalk is detachably attached at one end to the end of the upper transporting device 4 along the grain stalk transport path by a detachable tool (bolt, nut, etc.). The other end is provided on the inclined guide surface 5a positioned above at a predetermined distance, and the upper end of the inclined guide surface 5a is detachably attached to a support tube 21 described later by a detachable tool (bolt, nut, or the like). I have.

Numeral 21 is a frame for cutting one end of a hollow tube.
It is detachably attached to the system 16 with bolts, nuts, etc.
The intermediate portion is made to protrude upward on the side of the upper transporting device 4 on the non-transporting side, and is bent in the lateral direction to form the inclined guide surface 5a.
And a support tube bent downward at a lateral lateral position across the upper transport device 4. A supply depth sensor 8 is provided at an intermediate portion provided substantially parallel to the inclined guide surface 5a of the support tube 21, and an upper transfer device 4 is configured and rotatably provided at a tip portion bent downward. A guide rod 4b is attached along the endless chain 4a.

The supply depth sensor 8 is provided at predetermined intervals on the back surface of a sensor frame 22 formed by bending a flat plate to form an inverted L-shape, fetches various kinds of work information, and issues a control command to various actuators. The micro switch 23 connected to the CPU 63 for outputting the signal after the operation,
24, a sensor 7 for turning on and off the microswitch 23, and a sensor 7 for turning on and off the microswitch 24.

Reference numeral 25 denotes a horizontal link support surface 25b having a vertical standing surface 25a formed by bending a flat plate at approximately 90 degrees and holes 26, 26 provided at intervals in the axial direction of the support tube 21.
And a support tube 2 having an upright surface 25a provided substantially parallel to the inclined guide surface 5a.
1 and is fixed substantially parallel to the inclined guide surface 5a along the axial direction.

The links 27 and 28 are formed in a flat, narrow rectangular shape, and one link 27 is formed longer than the other to form an operating handle 33. The link 27 is slightly larger than the hole 26 at the same distance from the tip. Vertical axes 9 having a small diameter and substantially the same diameter with a screw formed at the shaft end are provided integrally. Further, the longitudinal axes 9, 9 of the links 27, 28 are inserted into the holes 26 so that the shaft ends protrude from the link support surface 25b, and the compression type spring 30 and the washer 31 are inserted into the projecting portions 29. By adjusting the compressive force of the spring 30 with the nut 32 meshing with the screw, that is, by adjusting the compressive force of the spring 30, the lateral frictional force of the links 27 and 28 can be adjusted. .

At the distal ends of the two links 27 and 28, a sensor frame 22 is provided on the longitudinal axis so that the sensing elements 7 are arranged in the axial direction of the support tube 21 and substantially perpendicular to the inclined guide surface 5a. Are pivotally connected via a support shaft 34 of the
28, the sensor frame 22, and the sensor support 25 form a parallel link. Then, the sensor frame 22
Are attached to the links 27 and 28, the lower end of each sensing element 7 is close to a point where it does not contact the inclined guide surface 5a.

When the operating handle 33 is rotated to a predetermined position in the horizontal direction, the sensor frame 22 is moved by the two links 27 and 28 constituting the parallel link in a direction substantially parallel to the opposite direction and stopped. Even if the cereal stalks conveyed by the partial conveying devices 3 and 4 push the sensor 7, the compression is performed so that the compression force of the spring 30 is greater than the pressing force, and the links 27 and 28 move the sensor frame 22. It does not have a configuration.

Numeral 35 denotes a mowing elevating cylinder, which is configured to raise and lower the mowing frame 16 by a hydraulic device such as a solenoid valve (not shown) by operating the elevating lever 36 forward or rearward. The raking and conveying device 20 includes a lower raking ring and an upper raking endless belt. The raking and conveying device 20 is provided above the mowing device 17 for each row of mowing grain culm, and rakes and transports the cereal culm backward. It has a configuration.

The lower transporting device 3 includes, as main components,
A sprocket (not shown) rotatably provided at front and rear intervals, and an endless chain 3a wound around the sprocket.
And a guide rod 3b, etc., which is moved along the straight portion of the endless chain 3a and constantly pressed against the endless chain by a spring. The upper conveying device 4 includes a sprocket (not shown) rotatably provided at an interval in the front and rear, an endless chain 4a having lugs 38 wound around the sprocket and protruding toward the conveying passage at predetermined intervals. A guide rod 4b and the like are provided along the straight portion of the endless chain 3a and attached to the support tube 21 and constantly pressed toward the endless chain by a spring.

Reference numeral 39 denotes a recess formed on the rear side surface of the central portion of the lower gear box 37 so as to be slightly larger than the outer diameter of the lubrication tube 40 toward the front side.
(In the embodiment, the hycorin tube) is a pre-cutting device 6.
Of the lower gear box 37 is fitted into the recess 39. Reference numeral 41 denotes a flexible clamp whose lower end is detachably attached to the lower gear box 37.
Is fixed.

Therefore, when the lubrication pipe 40 crosses the lower gear box 37, it can be accommodated in the recess 39 provided at the rear end of the lower gear box 37. It can move smoothly without any. Since the number of members for fixing the lubrication pipe 40 can be reduced, the assembling and disassembling operations can be simplified, the operation efficiency can be improved, and the cost can be reduced.

Further, the mowing pre-processing device 6 is configured so that it can be moved and adjusted in the lateral direction with respect to the traveling direction of the traveling vehicle body 2 by the driving means. In FIG. 11, the horizontal frame 52 has one end of the pipe cut and fixed to the lower end of the support frame 15, and the other end on the left side in the forward direction of the traveling vehicle body 2 (hereinafter referred to as the uncut culm side). ) Is provided near the weeding rod 18 located at the leftmost end.

The swinging means has a rear end rotatably mounted on the horizontal frame 52 and a front end mounted on the cutting frame 16.
A left link 53 rotatably attached to the uncut culm side, and a rear end rotatably attached to the lower end of the mowing support frame 15 and a front end portion of the already cut culm of the cutting frame 16. A right link 54, which is rotatably attached to the center of the side and forms a substantially parallel link with the left link 53, and a forward / reverse rotation provided at a position offset to the right end of the cutting frame 16 on the cut culm side. A motor 55, a motor shaft 56 rotated by the activation of the electric motor 55, and a screw portion formed on the inner peripheral surface for meshing with a screw portion formed on the outer peripheral surface of the motor shaft 56, and the other end thereof And a cylinder 57 whose part is rotatably attached to the horizontal frame 52.

Therefore, when the forward / reverse rotation motor 55 rotates forward, the motor shaft 56 also rotates in the same direction, and the forward / reverse rotation motor 55 rotates.
Since the distance between the cutter 55 and the cylinder 57 is shortened and the cutting frame 16 is moved to the uncut culm side, the left and right links 53 and 54 are related to the pre-cutting processing centering on the rear end supporting portion. The device 6 is moved to the uncut culm side, and conversely, the forward / reverse motor 55
When the motor rotates in the reverse direction, the motor shaft 56 also rotates in the same direction, so that the distance between the forward / reverse motor 55 and the cylinder 57 becomes longer, and the cutting frame 16 is moved to the already cut culm side (driver's seat side). Therefore, in connection with this, the left and right links 53 and 54 move the pre-cutting device 6 toward the already cut culm around the rear end support portion.

The right link 54 is a cutting support frame.
A transmission mechanism such as gears for transmitting the rotational power transmitted by the mowing transmission shaft 47 provided in the gear 15 to the drive units such as the mowing device 17 and the grain stalk raising device 19 is provided, and is formed in a box shape. Pre-cutting device 6 in the embodiment of FIG.
The mechanism for moving and adjusting the lateral direction is a forward / reverse rotation motor (not shown) as a driving source, a wire receiving body 58 having one end rotatably and removably attached to the horizontal frame 52, One end is connected to an operating portion (not shown) that is activated by the activation of the forward / reverse motor, and the other end is rotatably attached to the uncut culm side end of the cutting frame 16. Wire 59
And an outer end having one end attached to the wire receiving body 58 and the other end cut and attached to the machine frame on the support frame side.
A wire 61 composed of a wire 60 and a compression spring 62 whose ends are attached to the right link 54 and the end of the cut frame 16 on the cut culm side to constantly draw the cut frame 16 to the cut culm side. And so on.

Next, the block circuit shown in FIG. 13 will be described. Reference numeral 63 denotes an arithmetic control unit (hereinafter referred to as a CPU) of a microcomputer having a memory in which necessary data and control programs are incorporated. Performs arithmetic / logic and comparison operations. Then, as information input to the CPU 63 through the input interface 64,
A part of the work condition information from the various switches includes supply depth control work information from the supply depth switch 65, ear position information from the micro switches 23 and 24, and left or right movement from the cutting horizontal slide switch 66. There is information.

Further, as information output from the CPU 63 via the output interface 67, a conveying device (not shown) for changing the supply depth of the grain stalk to the feed chain 14 of the threshing device 13 is driven. There are forward or reverse rotation start command signals to the supply depth motor 68 and the forward / reverse rotation motor 55. Next, the operation will be described.

First, a driver sitting in a seat turns on an engine switch (not shown) to start the engine, and operates a throttle lever to adjust the number of revolutions of the engine.
Then, various switch switches such as the supply depth switch 65 are operated to select a work condition. Then, the driver operates the mowing / unclutching lever to transmit the power to the pre-cutting device 6 and the threshing device 13, and further operates the transmission lever to move the traveling vehicle body 2 forward. The cutting pre-processing device 6 includes a cutting input pulley 44, a cutting input shaft 46, and bevel gears 45 and 4.
8, the reaping transmission shaft 47, the reaping device 17, the cereal stem raising device 19 via the transmission mechanism provided in the right link 54,
The endless chain 3a and the upper transfer device 4 of the lower transfer device 3 are driven via a transmission mechanism 50 such as a gear rotatably provided in the cutting output gear box 49 by driving the scraping transfer device 20 and the like.
Of the endless chain 4a.

If necessary, the lifting lever 36
Is operated back and forth to extend and retract the mowing cylinder 35 to select the height of the mowing pre-processing device 6 and to align the culm to be harvested to start the operation. In the case where the lifting lever 36 and the operation for correcting the traveling direction of the traveling vehicle body 2 are also used,
It may be tilted left or right to correct the direction of travel. Further, when the cutting horizontal slide switch 66 is set to the left side, the CPU 63 outputs a forward rotation start command signal to the forward / reverse rotation motor 55. Then, the motor shaft 56 rotates in the same direction as that and shortens the interval between the forward / reverse rotation motor 55 and the cylinder 57, so that the cutting frame 16 is moved toward the uncut culm side. The links 53 and 54 move the pre-cutting device 6 to the uncut culm side around the rear end support portion. Conversely,
When the cutting horizontal slide switch 66 is set to the right, C
PU 63 outputs a reverse rotation start command signal to forward / reverse rotation motor 55. Then, the motor shaft 56 rotates in the same direction as that, and the interval between the forward / reverse rotation motor 55 and the cylinder 57 is lengthened, so that the cutting frame 16 moves toward the cut culm side. The links 53 and 54 move the pre-cutting device 6 to the already-cut culm side around the rear end support portion.

Since the left and right links 53 and 54 move the cutting frame 16 to the uncut culm side or the already-cut culm side around the rear end supporting portion, the pre-cutting device 6 reaches a desired position in the lateral direction. Then, the on-operation of the cutting horizontal slide switch 66 is stopped. In this manner, the forward / reverse motor 55, which is the driving source for moving the pre-cutting device 6 in the lateral direction, is moved to the end of the cutting frame 16 on the side opposite to the direction in which the cut culm is transported. Since it is provided so as to be biased, the movement of the cut stalks is not hindered, and the cutting operation can be performed smoothly.

In FIG. 12, when the forward / reverse rotation motor rotates forward and pulls the inner wire 59, the cutting frame 16 is related to this and compresses the compression spring 62 while not cutting. Move laterally toward the culm side. When the forward / reverse motor rotates in the reverse direction, the compressed compression spring 62
The cutting frame 16 is moved laterally toward the cut culm side by the pressing force of (1). Therefore, the pre-cutting device 6 can quickly return to the cut culm side.

The culm in the field is subjected to weeding by the weeding rod 18 at the lower front end of the advancing traveling vehicle body 2, and is then caused to stand upright by the culling raising device 19. Thereafter, the root of the stock is cut by the cutting device 17. The harvested grain stalk is transferred to the scraping and conveying device 18.
The lower part is sandwiched between the endless chain 3a and the guide rod 3b of the lower conveying device 3, and the upper part is lugs 38 of the endless chain 4a of the upper conveying device 4.
Threshing device 13 by feed rod 4b and feed chain 14
Conveyed toward. Then, it reaches the starting end of the feed chain 14 from the transport end and is supplied to the threshing apparatus 1 for threshing.

During such an operation, when the cereal stem comes into contact with both of the sensing elements 7 of the supply depth sensor 8 and the micro switches 23 and 24 are turned on, the CPU 63 transmits the output through the output interface 67. Since a forward drive command signal is output to the supply depth motor 68, the supply device for the supply depth moves to the shallower handling side in connection with this. Conversely, when the cereal stalk does not contact both the sensing elements 7 of the supply depth sensor 8, the CPU 63 outputs a reverse drive command signal to the supply depth motor 68 via the output interface 67. Therefore, in connection with this, the conveying device for the supply depth moves to the deep handling side.

When the feeding posture of the grain stalk is corrected and comes into contact with the sensor 7 on the near side, the feeding control signal is not output from the CPU 63 and the grain is supplied to the threshing device 13 at an appropriate depth. it can. In some cases, the position of the sensing element 7 may be changed by moving the supply depth sensor 8 depending on the conditions of the grain culm in the field. In this case, when the operating handle 33 is moved in the horizontal direction around the vertical axis 9, the sensor frame 22 is moved in parallel in the opposite direction by the two links 27 and 28 constituting the parallel link and stopped. At this time, since the sensing element 7 moves substantially parallel to the inclined guide surface 5a, the inclined guide surface 5a
This prevents poor contact with the grain stalks being transported while being guided, thereby improving the sensing performance. The operation handle 3
The user can adjust the position of the sensing element 7 by a simple operation of one operation of 3.

[0039]

Another embodiment A sensor frame 22 provided with a sensor 7, a microswitch (not shown) and the like at the tip of an operation handle 33 provided so as to be able to stop rotating around the longitudinal axis 9 as a fulcrum. The sensor 7 is moved substantially parallel to the inclined guide surface 5a by rotating the operation handle 33.

[Brief description of the drawings]

FIG. 1 is a side view of a combine.

FIG. 2 is a front view of the combine.

FIG. 3 is a perspective view of a partially pre-cutting pretreatment device.

FIG. 4 is a plan view of an upper transfer device having an upper guide plate.

FIG. 5 is a perspective view of a supply depth sensor.

FIG. 6 is a plan view of a supply depth sensor.

FIG. 7 is a side view of a supply depth sensor.

FIG. 8 is a plan view of a supply depth sensor according to another embodiment.

FIG. 9 is a plan view of a partially cut-out lower gear box.

FIG. 10 is a side view of the lower gear box.

FIG. 11 is a partially cutaway plan view of a pre-cutting device having lateral moving means.

FIG. 12 is a partially cutaway plan view of a pre-cutting device having a lateral moving unit according to another embodiment.

FIG. 13 is a block diagram.

[Description of Signs] 1 Traveling device 2 Traveling vehicle body 3 Lower transporting device 4 Upper transporting device 5 Upper guide plate 6 Cutting pretreatment device 7 Sensor 8 Supply depth sensor 9 Vertical axis

Claims (1)

[Claims] 1. A traveling body 2 provided with a traveling device 1 is provided with a lower transporting device 3 for transporting a lower portion of a cut culm at a lower portion and an upper transporting device 4 for transporting an upper portion of a grain culm at an upper portion. A pre-cutting device 6 provided with an upper guide plate 5 for guiding the upper part of the grain culm above the transport device 4 is provided. Above the upper transport device 4, the tip is brought close to the upper guide plate 5 and A supply depth sensor 8 having a sensor 7 arranged at intervals in a direction crossing the transport direction and a vertical axis 9 having an axis substantially perpendicular to the upper guide plate 5 are provided. A combine in which the depth sensor 8 is configured to be freely changeable in the horizontal direction about the vertical axis 9.