JP2017176042A - Feed chain drive device of head-feed combine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To satisfactorily perform grain culm supply to a threshing device even if traveling at low speed for harvesting the falling grain culm and wet grain culm, and thereby increase efficiency of harvesting work.SOLUTION: A feed chain drive device of a head-feed combine is provided with: a vehicle speed tuning drive path (A) for transmitting the power of an engine (15) to a feed chain (13) via a hydraulic continuously variable transmission (17) for driving a traveling device (2); and a constant speed drive path (B) for transmitting the power from the engine (15) to the feed chain (13) without going via the hydraulic continuously variable transmission (17) and performing the drive at a predetermined high speed. Also, a falling grain culm reaping operation tool (12) is provided, and the traveling device (2) is driven at a low speed on the basis of the operation of the falling grain culm reaping operation tool (12), and also the feed chain (13) is driven at the high speed via the constant speed drive path (B).SELECTED DRAWING: Figure 2

Description

  The present invention relates to a feed chain drive device for a self-removing combine.

  A self-decomposing combiner is a type of cereal that is inserted into the handling chamber while holding the cereal stock carried by the reaping device with a feed chain provided along the handle of the threshing device and feeding it backwards. The teeth are planted in the handle barrel on the tip of the ears so that the grains are handled.

  As described in Patent Document 1, the feed chain in this self-detaching combine is switched between a vehicle speed-synchronized drive that shifts in synchronization with the harvesting traveling speed of the combine and an arbitrary speed-changing drive, and the conveyance speed is set according to the amount of harvested culm. It can be changed.

  When the feed chain is driven in synchronism with the vehicle speed, the amount of harvested cereal straw supplied to the threshing device becomes appropriate, and good threshing performance is maintained.

JP 2005-21030 A

  However, when harvesting cereals that have fallen on the field with a self-removing combine harvester, it is necessary to mow the cereals that have fallen slowly while driving at a low speed. Because the speed is low, if the amount of cereals is large, the pestle is wet, or the posture of cereal conveyance is disturbed, the cereals stagnate at the entrance of the threshing device, causing clogging and interrupting the harvesting operation. It may be necessary.

  In the self-decomposing combine harvester, the harvesting operation of the harvested cereal and the wet cereal can be performed satisfactorily even when traveling at a low speed, and the efficiency of the harvesting operation by the combine can be improved. The purpose is to increase.

  The problems of the present invention are solved by the following technical means.

  The invention according to claim 1 is a reaping device (4) for harvesting cereals vegetated in a field, and a feed chain for conveying cereals harvested by the reaping device (4) while supplying them to the threshing device (3). 13) a self-removable combine feed chain drive device comprising a feed chain (17) through a hydraulic continuously variable transmission (17) for driving the travel device (2). 13) A vehicle speed-synchronized drive path (A) that is transmitted to the feed chain (13) without passing through the hydraulic continuously variable transmission (17) from the engine (15) at a predetermined high speed. A feed chain drive device for a self-removing combine machine characterized by having a constant speed drive path (B) for driving.

  According to the second aspect of the present invention, an overlaid grain culling operation tool (12) is provided, and the traveling device (2) is driven at a low speed based on the operation of the overlaid corn cocoon harvesting operation tool (12). The feed chain drive device for a self-detaching combine according to claim 1, wherein the feed chain (13) is driven at a high speed via the constant speed drive path (B).

  According to the first aspect of the present invention, when harvesting cereal grains that have not fallen in the field, the feed chain 13 that conveys the harvested cereal grains is driven via the vehicle speed synchronized drive path A at an appropriate speed. Since cereals are sent, threshing is good. Further, when the traveling device 2 is driven at a low speed in order to mow the fallen cereal, the feed chain 13 is driven at a high speed via the constant speed drive path B, so that even if a large amount of cereals are present, the threshing device 3 is driven. The harvesting operation can be continued while the combine is running at a low speed without stagnation, and the efficiency of the harvesting operation is increased.

  According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, when the grain to be harvested is changed from the napped state to the fallen cedar, the fallen cereal reaping operation tool 12 is operated. Thus, since the traveling device 2 is in a low-speed traveling state and the feed chain 13 is driven at a high speed via the constant speed drive path B, the harvesting operation of the fallen cereal can be performed with an easy operation.

FIG. 1A is a side view of the self-removing combine, and FIG. 1B is a partially enlarged view of FIG. It is a power transmission diagram of a feed chain. It is a block diagram of automatic control. It is a side view of the self-removing combine of another embodiment. It is a left side sectional view of a general-purpose combine.

  Hereinafter, an embodiment of the present invention will be described with reference to an embodiment shown in the drawings.

  In this specification, the left and right directions in the forward direction of the combine are referred to as left and right, respectively, the forward direction is referred to as forward, and the reverse direction is referred to as rear.

  The outline of the combine according to the present embodiment will be described with reference to FIGS. 1A and 1B. Reference numeral 1 denotes a combiner body frame, 2 a crawler type traveling device provided below the body frame 1, A threshing device 3 is mounted on the left side, a reaping device 4 is provided on the front side of the body frame 1, a Glen tank 5 is mounted on the right side of the threshing device 3, and a control unit 6 is provided on the front side of the Glen tank 5.

  The steering lever 60 erected on the control unit 6 is a side where the steering lever 60 tilts the traveling direction of the traveling device 2 by applying a brake to one of the left and right axles driven from the mission case 20 when tilted to the left and right. To go to. Further, if a mild turning switch (not shown) provided on the steering lever 60 is pressed, the brakes are intermittently applied, so that the crawler crawling and slippage of the traveling device 2 are reduced.

  Further, if the steering lever 60 is tilted to the left and right, the rotation of the engine 15 is automatically reduced, so that a gentle turning can be performed.

  The reaping device 4 has a weeding device 8 for weeding cereals to be planted side by side at the front end position, and the weeding device 8 is used for weeding on the rear side of each weeding device 8. A pulling device 9 is provided for raising the cereal cereal, a cutting blade 10 is provided on the rear side of the pulling device 9, and a threshing device 3 for rearing the cereal that has been cut by the cutting blade 10 on the rear side above the cutting blade 10. A chopped grain culm transporting device 11 is provided for transporting to the top.

  The cereals that have been transported to the end of the harvested cereal transporting device 11 are inherited in a proper posture by the feed chain 13 of the threshing device 3 and are transported backward. The feed chain 13 is stretched along a handling port on one side of the handling chamber in which a handling cylinder (not shown) of the threshing device 3 can be pivoted. And the waste after the threshing process is carried out by a waste chain (not shown).

  A weed ridge 7 is erected on the front side of the pulling device 9, and an obstacle detection device 50 such as a camera is provided downward in the middle of the upper and lower sides, and the front side is covered with a weed cover 51 that is pointed forward. ing. The obstacle detection device 7 operates when the clutch of the reaping device 4 is engaged, detects an obstacle thrown into the field such as an empty can or an empty box existing in front of the reaping device 4, sounds an alarm, The driving of the device 4 and the traveling device 2 is stopped. Further, the engine 15 may be configured to automatically stop.

  As shown in FIG. 4, the mounting structure of the obstacle detection device 50 may be configured such that a loop-shaped mounting arm 53 is provided in front of the pulling device 9, and a plurality of right and left are arranged at the tip portion to monitor the entire cutting width. good.

  Further, as shown in FIG. 5, in the general-purpose general-purpose combine, a loop-shaped mounting arm 55 is provided in front of the mounting arm 56 that supports the take-up reel 54, and a plurality of right and left are arranged at the tip portion to monitor the entire cutting width. You should do it.

  Accordingly, as shown in FIG. 2, the first belt 19 extends from the first output pulley 16 fixed to the output shaft 14 of the engine 15 to the first input pulley 18 fixed to the input shaft of the HST (hydraulic continuously variable transmission) 17. The second belt 24 is transmitted from the second output pulley 21 fixed to the output shaft 14 to the second input pulley 22 fixed to the input shaft 25 of the rear gear case 23.

  The HST 17 is attached to the transmission case 20 to drive the traveling device 2 at a variable speed, and is transmitted from the output shaft 28 shifted by the transmission case 20 to the cutting input shaft 30 by the third belt 29, and input from the cutting input shaft 30 to the front gear case 31. A vehicle speed tuned drive path A is formed as a configuration in which the fourth belt 33 is transmitted to the shaft 32 and the front sprocket 37 of the feed chain 13 is driven by the output shaft 36 of the front gear case 31. The fourth belt 33 is provided with a front clutch pulley 34 that is operated by a front clutch motor 35 so as to be able to contact and separate, and the transmission of the driving force to the feed chain 13 is connected and disconnected.

  Inside the rear gear case 23, there are provided a rear clutch 39 for connecting and disconnecting the power transmission by the rear clutch motor 38, and a height clutch 40 for switching the transmitted power between a high speed transmission state and a low speed transmission state by a high and low clutch motor 41, A sprocket 43 is provided after being fixed to the output shaft 42 to form a constant speed drive path B for driving the feed chain 13 at a high speed.

  Therefore, the drive of the feed chain 13 is fixed when the front clutch 34 is connected and the rear clutch 39 is disconnected and transmitted, and the vehicle speed tuning drive path A is disconnected and the front clutch 34 is disconnected and the rear clutch 39 is connected and transmitted. The high-speed drive can be selected, and the constant-speed drive can be selected by switching the high and low clutch 40 so that the low-speed drive state and the constant-speed drive path B that becomes the high-speed drive state can be selected.

  FIG. 3 is a block diagram of automatic control. On the input side of the control device 45, a cutting layer thickness sensor 46 that detects the thickness of the layer of the cutting cereal masher provided in the chopped cereal transporting device 11 is provided, and the grain to be conveyed The amount of soot is detected by the layer thickness. This cutting layer thickness sensor 46 determines the occurrence of clogging with an excessive layer thickness, and the clogging determination with the layer thickness takes into account that when the running speed increases, the cereal swells due to changes in centrifugal force or acceleration. Therefore, it is determined that the blockage is thicker than usual. In addition, in the case of a cereal husk having many weeds or an overgrown husk, the determination thickness of clogging can be changed by the layer thickness sensor sensitivity adjustment dial 49.

  In addition, a fall work detection sensor 47 is provided for detecting that the auxiliary transmission lever 12 has been shifted to the fall cut position. The inclining work detection sensor 47 may be a push button provided on the main transmission lever.

  Further, a vehicle speed detection sensor 48 that detects the traveling speed of the traveling device 2, a layer thickness sensor sensitivity adjustment dial 49 that adjusts the detection sensitivity of the cutting portion layer thickness sensor 46, an obstacle detection device 50, and a crop selection dial 57 are provided.

  The control device 45 outputs a control signal to the front clutch motor 35, the rear clutch motor 38, and the high and low clutch motor 41, and outputs a control signal to the clogging alarm 52 and the transmission of the traveling device 2.

  In a normal mowing operation, the front clutch 34 is turned on, the clutch 39 is turned off, and the feed chain 13 is driven by the vehicle speed synchronized drive A. However, when the sub-shift lever 12 is set to the sub-shift, the traveling device 2 is lowered and the front clutch 34 is driven. Then, the clutch 39 is turned on and the high / low clutch 40 is switched to high speed to control the feed chain 13 to be driven by the constant speed drive path B.

  The high-low clutch 40 is switched to a low speed when the worker directly supplies the feed straw 13 with the grain husks that have been harvested by cutting the combine and performs threshing.

  For example, if the harvested grain is wheat, the crop selection dial 57 controls the feed chain 13 to be driven at a lower speed than in the case of rice when the wheat is selected.

A Vehicle speed synchronized drive path B Constant speed drive path 1 Airframe frame 2 Traveling device 3 Threshing device 4 Mowing device 5 Glen tank 6 Control unit 7 Weeding rod 8 Weeding device 9 Pulling device 10 Cutting blade 10
11 Conveying device 12 Overturned grain harpoon operating tool (sub-shift lever)
13 Feed chain 14 Output shaft 15 Engine 16 First output pulley 17 HST
18 First input pulley 19 First belt 20 Transmission case 21 Second output pulley 22 Second input pulley 23 Rear gear case 24 Second belt 25 Input shaft 28 Output shaft 29 Third belt 30 Cutting input shaft 31 Front gear case 32 Input shaft 33 Fourth belt 34 Front clutch 35 Front clutch motor 36 Output shaft 37 Front sprocket 38 Rear clutch motor 39 Rear clutch 40 High and low clutch 41 High and low clutch motor 42 Output shaft 43 Rear sprocket 45 Control device 46 Cutting part layer thickness sensor 47 Lodging work detection sensor 48 Vehicle speed detection sensor 49 Layer thickness sensor sensitivity adjustment dial 50 Obstacle detection device 51 Weed cover 52 Clogging alarm 53 Mounting arm 54 Pick-up reel 55 Mounting arm 56 Mounting arm 57 Crop selection dial 60 Steering lever

Claims (2)

A harvesting device (4) for harvesting cereals vegetated on a farm field, and a self-removing combiner comprising a feed chain (13) for conveying cereals harvested by the reaping device (4) while feeding them to the threshing device (3) A feed chain drive device,
A vehicle speed synchronized drive path (A) for transmitting the power of the engine (15) to the feed chain (13) via a hydraulic continuously variable transmission (17) for driving the traveling device (2);
There is provided a constant speed drive path (B) that is transmitted from the engine (15) to the feed chain (13) without passing through the hydraulic continuously variable transmission (17) and is driven at a predetermined high speed. A self-decomposing combine feed chain drive device characterized by the above. Provide the fallen grain cocoon harvesting tool (12),
The travel device (2) is driven at a low speed on the basis of the operation of the fallen grain culling operation tool (12), and the feed chain (13) is driven at a high speed via the high constant speed drive path (B). The feed chain drive device for a self-decomposing combine according to claim 1, wherein the feed chain drive device is driven.

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