JP2867593B2 - Grain stalk supply and transport equipment in combine harvesters - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a grain culm supply / transportation device that supplies a harvested grain culm to a threshing apparatus in a combine.

(Prior Art) Conventionally, a combine has been provided with a grain culm supply / conveying apparatus for supplying cereal stalks cut by a reaper to a threshing apparatus. Further, the grain culm supply and transport device is constituted by a head-side transport device and a stock-side transport device.

The grain culm supply / transportation device is configured to be able to adjust the handling depth by vertically rotating the culm supply / transportation device around the supply port of the threshing device.

(Problems to be Solved by the Invention) In the grain culm supply and transport device as described above, the transport speed of the tip side transport device and the transport speed of the stock side transport device are always the same. Also, this relationship remains unchanged even when the handling depth is adjusted.

Then, if the grain culm supply / conveyance device is turned up and down according to the length of the harvested grain culm, the handling depth can be adjusted. However, in fact, the longer the grain culm to be conveyed, the longer the ear is behind the root of the stock. was there.

(Means for Solving the Problems) The present invention employs the following technical means to solve the problems as described above.

That is, with respect to the front-side transport device 1 that transports the harvested grain culm, the rear-side grain culm supply transport device 2 is changed in position,
In the combine configured so that the handling depth of the grain culm supplied to the threshing device 3 can be adjusted,
Is constituted by a tip-side transport device 5 and a stock-source-side transport device 6, and a transport-speed changing means 7 for changing a relative transport speed between the tip-side transport device 5 and the stock-source-side transport device 6 is provided.
When the grain culm supply / conveyance device 2 moves in the direction of the long culm corresponding position, the conveyance speed changing means 7 operates, and the conveyance speed of the head-side conveyance device 5 is higher than the conveyance speed of the stock side conveyance device 6. This is a grain culm supply / transportation device characterized in that it is configured to be as follows.

(Operation and Effect of the Invention) The harvested grain culm is transported by the front-side transport device, and is taken over by the rear-side grain culm supply transport device. At this time, the handling depth is adjusted by changing the position of the grain stalk supply / transport device according to the length of the grain stalk. Then, in relation to the adjustment of the handling depth, the relative transport speed between the tip-side transport device and the stock-side transport device is changed.

That is, the transport speed changing means is operated in connection with adjusting the handling depth in the direction of the position corresponding to the long culm, and the transport speed of the tip side transport device becomes higher than the transport speed of the stock side transport device.
As a result, it is possible to correct the transport delay of the tip during transport of the long culm, maintain the supply posture to the threshing apparatus properly, and give a good threshing action. As a result, an efficient threshing operation can be performed without any troubles such as unhandled items.

(Example) An example of the present invention will be described.

The combine 8 has a control unit 1 above the endless traveling device 9.
0, an engine 11, a threshing device 3, a hopper 12, etc. are mounted, and a mowing device 13 is provided at the front part by a hydraulic cylinder 14 so as to be vertically rotatable. The reaping device 13 includes a reaping frame.
Weeding rod 16, raising device 17, clipper-type cutting blade for 15
18. It is configured by attaching the front transfer device 1 and the like. The front-side transport device 1 is composed of an upper and lower transport device 1a and a lower transport device 1b that can change the transport speed. The upper transport device 1a transports the spike side of the cereal stem, and the lower transport device 1b transports the stock side of the cereal stem. The reaping device 13 is transmitted from the reaping input pulley 19 via the reaping input shaft 20, the bevel gear 21, and the bevel gear 22, and the vertical rotation center of the reaping device 13 coincides with the axis of the reaping input shaft 20. I do.

Further, a grain culm supply and transport device 2 is provided between the cutting device 13 and the threshing device 3. The grain culm supply / conveyance device 2 transfers the harvested grain culm from the front side conveyance device 1 to the feed chain 23 of the threshing device 3, and includes a lug type tip side conveyance device 5 located above the transmission case 24. It is configured by attaching a chain-type stock transfer device 6 located on the lower side. Then, the transmission case 24 is rotatably fitted and mounted on the outer cylinder 28 of the transport input shaft 27 driven via the cutting input shaft 20, the spur gear 25, and the spur gear 26. The stock side transfer device 6 drives the transfer chain 33 via the transfer input shaft 27, bevel gear 29, bevel gear 30, transfer output shaft 31, and drive sprocket 32. The tip-side transport device 5 includes a transport input shaft 27, a bevel gear 29, a bevel gear
30, conveyance output shaft 31, ring cone type continuously variable transmission 34,
At the time of driving 35, the lug chain 38 having the lug 37 is driven via the driving sprocket 36.

Then, the roller 40 at the tip of the support frame 39 fixed to the grain culm supply / transport device 2 is moved from the electric motor 41 to the speed reduction device 4.
2. It is placed and supported on an L-shaped frame 45 which is vertically rotated via an arm 43 and a rod 44. The adjustment of the handling depth is performed by the L-shaped frame 45 rotating up and down by driving the electric motor 41. This is to rotate the grain culm supply and transport device 2 up and down about the axis of the transport input shaft 27. As a result, the starting end of the stock-side transfer device 6 moves up and down with respect to the end of the front-side transfer device 1 to change the interval, thereby changing the grain stalk clamping position at the time of taking over the harvested grain stalk. In this way, the feed chain 23 is taken over in a state where the length from the holding position to the tip is kept constant, and a tip having a fixed length is supplied into the threshing device 3. The adjustment of the handling depth is to rotate the grain culm supply and transport device 2 upward as the harvested grain culm becomes longer. The electric motor
41 is operated by a manual switch or an automatic control device which detects the length of the cut culm (the position of the tip) and outputs the control. Sensors 78 for detecting the length (position of ears) of the harvested grain culm of this automatic control device are provided at two locations at different heights in the vertical direction on the back of the raising device 17.

Further, the continuously variable transmission 34 transmits the drive output shaft 31 to the drive shaft 35 by changing the speed of the transfer output shaft 31 in a stepless manner.
Is to be driven. The continuously variable transmission 34 is capable of adjusting a gear ratio by sliding a shifter 46.
The shifter 46 slides by the rotation of the arm 47. Further, the arm 47 and the arm 43 are connected by a wire 48, and the continuously variable transmission is linked with the vertical rotation of the arm 43.
The gear ratio of 34 is configured to be adjusted. (This is the transfer speed changing means 7.) With this configuration, the rotation speed of the drive sprocket 36 of the tip side transfer device 5 increases as the handling depth is adjusted and the grain culm supply transfer device 2 is rotated upward. . At this time, the drive sprocket of the stock side transfer device 6
Since the rotation speed of 32 is constant, the lug of
The moving speed of 37 is faster than the moving speed of the transfer chain 33 of the stock side transfer device 6. This makes it possible to correct the delay of the ear when transporting long culm.

In addition, the length (the position of the tip) of the cut grain culm is detected by a sensor 78 on the back surface of the raising device 17, and when the cut grain culm is detected to be a long culm, the upper transfer device of the front transfer device 1 is detected. The transfer speed of 1a is made faster than the transfer speed of the lower transfer device 1b. This can also correct the delay of the ear when transporting long culm.

A transfer spiral 52 for transferring the leaked material from the receiving net 50 onto the swinging rack 51 is provided on the lower front side of the receiving net 50 along the outer periphery of the handling drum 49 in the threshing device 3. Multiple units are arranged in the direction. The transfer spiral 52 is arranged with a different spiral pitch so that the longer the distance from the feed chain 23, the larger the spiral pitch. In the under-handling type threshing device 3, there is more leakage from the receiving net 50 in a portion farther from the feed chain 23 due to the rotation direction of the handling drum 49. By arranging the transfer spiral 52 having a high transport speed (large spiral pitch) in a portion where a large amount of leakage occurs, the thickness of the processed material layer on the swinging shelf 51 can be made substantially uniform in the left-right direction. As a result, the leakage rate of the processed material from the swinging shelf 51 can be appropriately maintained, and the sorting loss of the grains can be eliminated.

Above the handling cylinder 49 of the threshing device 3, a dust adjustment guide 53 for feeding and guiding the threshing product is provided, and a solenoid 54 for adjusting the feed angle of the dust adjustment guide 53 is provided. Further, a mission for driving the endless traveling device 9 will be described. Reference numeral 63 denotes an input pulley 64, a fixed gear group 65.
An input shaft 66 having an idle gear group 67, a slide key 68 selectively engaging with the inner peripheral surface of the idle gear group 67, and a speed change shaft having a shifter groove 69, and 70 being an intermediate shaft having an intermediate gear 71 ,
Reference numeral 72 denotes a center gear 73, and side clutch gears 74, 7 provided on the left and right sides of the center gear 73 in a slidable manner.
4, a side clutch shaft having a side clutch 58 having a multi-plate disc capable of applying a braking force to the side clutch gears 74, 74, a wheel gear 76 meshing with the side clutch gear 74, an endless belt (endless track belt) Is a wheel shaft having a driving sprocket 77 for driving the wheel. A hydraulic circuit for adjusting the steering of the endless traveling device 9 will be described. Reference numeral 55 denotes a hydraulic pump, 56 denotes a direction switching valve, and 57 denotes a push for operating the side clutch 58 by sliding the left and right side clutch gears 74. A cylinder, 59 is a pressure detection switch, 60 is a variable relief valve, and 61 is a filter. Then, the solenoid of the direction switching valve 56 is operated by the tilting of the steering lever 62 provided in the steering section 10 to switch the oil path. At the same time, the pressure in the push cylinder 57 is changed by changing the relief pressure of the variable relief valve 60, and the effectiveness of the side clutch 58 is adjusted. The relief pressure of the variable relief valve 60 is controlled by the steering lever 62.
Increases substantially proportionally to the tilt angle of. The solenoid 54 operates when the pressure detection switch 59 detects a pressure equal to or higher than a certain value, and the
53 is changed to an angle at which resistance is applied in the feed direction of the threshing product. This prevents the combine 8 from cutting the side of the field and operating the steering lever 62 to correct the direction to the next side, thereby preventing the threshing product in the threshing apparatus 3 from scattering to the outside and causing loss. be able to.

[Brief description of the drawings]

BRIEF DESCRIPTION OF THE DRAWINGS The drawings show an embodiment of the present invention. FIG. 1 is an explanatory view of a main part, FIG. 2 is a side view of a combine, FIG. 3 is a cutaway side view of a threshing apparatus, and FIG. 5 is a plan view for explaining the transfer spiral, FIG. 6 is a view for explaining the operation of the dust control guide, FIG. 7 is a view for explaining the side clutch operating mechanism, and FIG. 8 is a cutaway of the transmission case. Fig. 9 is a hydraulic circuit diagram. DESCRIPTION OF SYMBOLS 1... Front side transport apparatus, 1a... Upper side transport apparatus, 1b... Lower side transport apparatus, 2... Grain culm supply and transport apparatus, 3.
4 ... supply port, 5 ... tip side transfer device, 6 ... stock side transfer device, 7 ... transfer speed changing means, 8 ... combine,
9 Endless belt type traveling device, 10 Operating section, 11 Engine, 12 Hopper, 13 Cutting device, 14 Hydraulic cylinder, 15 Cutting frame, 16 Weeding rod, 17 Raising device, 18 Cutting blade, 19 Cutting input pulley, 20 Cutting input shaft, 21 Bevel gear, 22 Bevel gear, 23 Feed chain, 24 Transmission case , 25… spur gear, 26… spur gear, 27… conveyance input shaft, 28… outer cylinder, 29… bevel gear, 30
... bevel gear, 31 ... transport output shaft, 32 ... drive sprocket, 33 ... transport chain, 34 ... continuously variable transmission, 35 ... drive shaft, 36 ... drive sprocket, 37 ... lug, 38 … Chain with lug, 39… Support frame, 40… Roller, 41…
... Electric motor, 42 ... Reduction gear, 43 ... Arm, 44 ...
Rod, 45: L-shaped frame, 46: Shifter, 47: Arm, 48: Wire, 49: Handle cylinder, 50: Bearing, 51 ...
Oscillating shelf, 52: Transfer spiral, 53: Dust control guide, 54
… Solenoid, 55… Hydraulic pump, 56… Directional switching valve, 57… Push cylinder, 58… Side clutch,
59 …… Pressure detection switch, 60 …… Variable relief valve,
61 ... Filter, 62 ... Steering lever, 63 ... Input shaft, 64
…… Input pulley, 65… Fixed gear group, 66 …… Shift shaft, 67
…… Floating gear group, 68 …… Slide key, 69 …… Shifter groove, 70 …… Intermediate shaft, 71 …… Intermediate gear, 72 …… Side clutch shaft, 73 …… Center gear, 74 …… Side clutch gear, 75 Wheel wheel, 76 Wheel gear, 77 Drive sprocket, 78 Sensor

Claims (1)

(57) [Claims] 1. A position of a rear grain feeding and conveying device 2 is changed with respect to a front conveying device 1 for conveying a harvested grain stem.
In the combine configured so that the handling depth of the grain culm supplied to the threshing device 3 can be adjusted,
Is constituted by a tip-side transport device 5 and a stock-source-side transport device 6, and a transport-speed changing means 7 for changing a relative transport speed between the tip-side transport device 5 and the stock-source-side transport device 6 is provided.
When the grain culm supply / conveyance device 2 moves in the direction of the long culm corresponding position, the conveyance speed changing means 7 operates, and the conveyance speed of the head-side conveyance device 5 is higher than the conveyance speed of the stock side conveyance device 6. A grain culm supply / transportation device characterized by being configured to be as follows.