JP3853216B2 - Pre-processing control device for combine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a preprocessing control device for a combine.
[0002]
[Prior art and problems to be solved by the invention]
Conventionally, in a combine, the output from an engine is branched and output to a traveling transmission system and a preprocessing transmission system to a preprocessing unit including grain transport, and a traveling transmission for driving a traveling device and a preprocessing unit driving It is known that the preprocessing control device is provided with speed interlocking means so as to change the driving speed of the preprocessing unit in conjunction with the change of the traveling speed in conjunction with the preprocessing transmission.
[0003]
In the above-described configuration, the drive speed after the shift of the travel transmission is detected after the output from the engine is branched to the travel transmission system and the pre-processing transmission system, and this drive speed detection information Based on the standard speed control for driving the preprocessing unit at a speed synchronized with the traveling speed by controlling the actuator for shifting the preprocessing transmission, and the driving speed of the preprocessing unit for the traveling speed It is possible to switch to constant speed control that keeps constant regardless of changes, and keeps stable cereal conveyance linked to the traveling speed while the aircraft is traveling, and when the aircraft traveling is stopped A so-called forced scraping operation in which the transmission and the pre-processing transmission are disconnected and the pre-processing unit continues the cereal conveyance can be performed.
[0004]
[Problems to be solved by the present invention]
The present invention was devised in the course of research and development in order to perform the linkage operation between the traveling transmission system of the combine equipped with the standard speed control and the constant speed control described above and the preprocessing transmission system with better operability and accuracy. The purpose of this is to provide a switching means that switches between standard speed control and constant speed control on the main gearshift lever that is always held by the operator while the aircraft is running, so that It is an object of the present invention to provide a pre-processing unit control device in a combine that can easily perform drive control of the pre-processing unit including the cereal conveyance while performing the process.
[0005]
[Means for Solving the Problems]
In order to solve the above problems, a first technical means adopted by the present invention includes a traveling transmission system that transmits an output from an engine to a traveling device through a switching operation of a main transmission lever provided in the traveling transmission, In a combine provided with a pre-processing transmission system for transmitting the output from the engine to a pre-processing unit via a pre-processing transmission, and provided with speed interlocking means for changing the driving speed of the pre-processing unit in conjunction with the traveling speed The pre-processing transmission system is a transmission system branched from the engine, and the pre-processing transmission system is provided with a dedicated work machine HST for shifting the drive speed of the pre-processing unit. detecting a running speed while providing a transmission speed sensor, the transport rotation sensor for detecting the driving speed of the preprocessing unit to the pretreatment transmission system provided in the main shift lever, the transport rotation detection The driving speed of the pre-processing unit based on the detection of capacitors varies with a change of the running speed based on the detection of the transmission rotation detecting sensor, the standard speed control for stopping the driving of the pre-processing unit in a state in which aircraft travel is stopped And the driving speed of the preprocessing unit based on the detection of the conveyance rotation detection sensor is kept constant regardless of the change in the traveling speed based on the detection of the transmission rotation detection sensor, and the preprocessing unit A switching means for switching to constant speed control that enables driving is provided. As a second technical means, the main transmission lever has a pre-processing unit different from that for the standard speed control. A mode changeover switch that is linked to the driving speed at the driving speed is provided, and as a third technical means, a switching means is provided on the side surface portion of the grip portion of the main transmission lever. Provided and is characterized in that a mode switch on the front portion of the main shift lever.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described in detail with reference to the accompanying drawings.
1 and 2, reference numeral 1 denotes a combine. The combine 1 is provided with a left and right crawler travel devices 4 and 4 on a body frame 3 provided with a pre-processing section 2 at its front portion so as to be movable up and down. 3, in addition to the driving cabin 5, a threshing section (not shown), a grain tank 6, a discharge auger 7, and the like are placed and fixed to constitute the combine 1.
[0007]
On the left side of the driver's seat 8 provided in the driving cabin 5 is provided with a main transmission lever 10 having a gripping portion 10a provided with a forced take-in switch 9a and a depression switch 9b composed of a momentary switch described later. A sub shift lever 11 is provided at a left position further away from the shift lever 10, and the vehicle travels by a combined shift operation of the levers 10 and 11.
[0008]
Further, the power transmission configuration of the combine 1 will be described. As shown in FIG. 3, two pulleys 13 and 14 for extracting output are attached to the drive shaft 12 a of the engine 12, and the driving force from the engine 12 is Is branched and output to a traveling transmission system A that is transmitted to the traveling HST 15 via the pulley 13 and a pre-processing transmission system B that is transmitted to the handle cylinder input shaft 16 via the pulley 14, and the traveling is provided with the HST 15. Driving forces for the left and right traveling devices are respectively output from the transmission 17 so as to perform variable speed traveling when the aircraft is traveling straight and turning in the left and right directions, and pulleys attached to the pulley 14 and the barrel input shaft 16. A belt 19 for driving force transmission is wound between the belt 18 and a tension clutch structure provided in the middle of the winding of the belt 19. It is configured to perform connection and disconnection of the driving force transmitted to the preprocessing transmission system B via the grain clutch 20.
[0009]
Then, the driving force to the pretreatment transmission system B is transmitted to the input pulley 24 of the work machine HST 23 constituting the work machine transmission 22 via the barrel input shaft 16 and the pulley 21, and is driven from the work machine transmission 22. The force is branched and output to the transmission system B1 to the pretreatment unit 2 and the transmission system B2 to the threshing feed chain 25.
[0010]
The work machine transmission 22 has two output shafts, a preprocessing output shaft 26 for driving force output to the preprocessing unit 2 and a feed chain output shaft 27 for driving force output to the threshing feed chain 25. The threshing feed chain 25 is driven via a sprocket 28 provided on the end side of the feed chain output shaft 27, and the handling cylinder 29 is connected to the handling cylinder input shaft 16 via a bevel gear 30. It is driven.
[0011]
On the other hand, the pretreatment unit 2 includes a cutting blade device 31, a pulling device 32, a handling depth conveyance body 33, and the like, and transmission of driving force to the preprocessing unit 2 is an input shaft of driving force on the preprocessing unit 2 side. 34 is carried out via a transmission belt 37 wound around a pulley 35 attached to the pulley 34 and the pulley 36 attached to the pre-processing output shaft 26, and a driving force is applied to the input shaft 34. The transmission system B1 to the input preprocessing unit 2 has a structure in which each mechanism is driven at a driving speed corresponding to the rotational speed (speed) of the driving force. A mowing clutch 38 having a tension clutch structure for connecting / disconnecting transmission of driving force to the input shaft 34 is provided, and connecting / disconnecting is performed by an on / off operation of an unillustrated mowing clutch switch provided in the driver's seat.
[0012]
Next, the control configuration of the above-described traveling transmission system A, the preprocessing transmission system B including the transmission system B1 to the pretreatment unit 2 and the transmission system B2 to the threshing feed chain 25 will be described.
[0013]
First, an engine rotation sensor S1 for detecting the rotational speed of the engine 12 is attached to a drive shaft 12a of the engine 12 that outputs a driving force to each of the transmission systems A and B (B1, B2). The driving force transmitted from 12a to the traveling HST 15 of the traveling transmission 17 is transmitted from the auxiliary transmission output shaft 40 to the left and right traveling devices (not shown) via the main transmission lever 10 and the auxiliary transmission mechanism 39 provided in the traveling transmission system A. ), The transmission speed of the airframe is shifted, and a transmission rotation detection sensor S2 is attached to the auxiliary transmission output shaft 40 to detect the rotational speed (traveling speed) of the auxiliary transmission output shaft 40. A main transmission potentiometer P serving as a switching position sensor for detecting the switching position of the lever 10 is provided at the base end of the main transmission lever 10. It is provided.
[0014]
Further, a motor M1 as an actuator for operating a swash plate angle to perform a speed change operation of the work machine HST23 is integrally attached to a trunnion shaft (not shown) of the work machine HST23 constituting the preprocessing transmission system B. In addition, the preprocessing output shaft 26 of the work machine transmission 22 is provided with a conveyance rotation detection sensor S3 for detecting the rotation speed of the preprocessing output shaft 26 (driving speed of the preprocessing unit 2). Further, the cutting clutch 38 is provided with a preprocessing clutch motor M2 for operating the cutting clutch 38 to be turned on and off, and is configured to automatically control turning on and off of the cutting clutch 38 by the preprocessing clutch motor M2.
[0015]
Further, each of the sensors S2 and S3 and the forced take-in switch 9a and the overturning switch 9b provided on the main transmission lever 10 perform a shifting operation of the work implement HST23 via the control unit 41 as shown in FIG. The conveyance drive control of the preprocessing unit 2 is performed by controlling the motor M1. Reference numeral 42 denotes a lodging lamp that is turned on when the lodging switch 9b is turned on.
[0016]
That is, as shown in FIG. 5, the detection information data is first read by the transmission rotation detection sensor S2, and then the detection information data is read by the conveyance rotation detection sensor S3. Thereafter, it is determined whether the forced take-in switch 9a is ON or OFF, and as shown in FIG. 6, while the forced take-in switch 9a is pressed to the ON state, regardless of the change in the traveling speed, The working machine HST23 for shifting the driving speed (preprocessing rotation speed R) of the processing unit 2 is held constant (constant speed control setting), and when the forced take-in switch 9a is released, the preprocessing unit 2 in the next stage automatically. The drive control is linked to the travel speed, and the process proceeds to the determination of whether the lodging switch 9b is ON or OFF.
[0017]
When the lodging switch 9b is in the OFF state, normal interlocking driving is performed (standard speed control setting). If the switch 9b is pressed in the ON state, the pre-processing unit 2 is compared with the standard speed control. It will be switched to the lodging setting with increased driving speed.
[0018]
Therefore, in the normal work traveling of the combine 1, only the main shift lever 10 that is frequently operated is gripped, and the operation related to the mowing and threshing work is extended to the operation portion provided in another part as in the past. It is possible to carry out the operation without any error, and it is possible to prevent the erroneous operation with respect to the lever operation and to ensure the safety of the cutting and threshing work accompanying the traveling of the aircraft.
[0019]
【The invention's effect】
In short, the present invention relates to a traveling transmission system that transmits the output from the engine to the traveling device via a switching operation of a main transmission lever provided in the traveling transmission, and the output from the engine via the preprocessing transmission. In a combine provided with a pre-processing transmission system for transmitting to the pre-processing unit and provided with speed interlocking means for changing the driving speed of the pre-processing unit in conjunction with the traveling speed, the pre-processing transmission system is referred to as the traveling transmission system. While providing a transmission system branched from the engine, the pre-processing transmission system is provided with a dedicated work machine HST for shifting the driving speed of the pre-processing unit, and the traveling transmission system is provided with a transmission rotation sensor for detecting the traveling speed, the conveying rotation sensor for detecting the driving speed of the preprocessing unit to the pretreatment transmission system provided in the main shift lever, driving speed of the pre-processing unit based on the detection of the transport rotation detecting sensor The changes relative to the change in the running speed based on the detection of the transmission rotation detecting sensor, and the standard speed control for stopping the driving of the pre-processing unit in a state in which aircraft travel is stopped based on the detection of the transport rotation detecting sensor A constant speed control that allows the pre-processing unit to be driven in a state in which the driving of the pre-processing unit is held constant regardless of the change in the traveling speed based on the detection of the transmission rotation detection sensor and the vehicle is stopped. Since the switching means is provided, the operation related to the mowing and threshing operation different from the operation related to traveling is provided in a different part as in the conventional case only by grasping the main transmission lever that the operator always uses when the aircraft is traveling. It can be performed without reaching the operation section one by one, and it can reduce the burden on the operator and maintain a smooth field running operation while preventing erroneous operation for complicated lever operations. It is intended to achieve an extremely useful new effect that.
[Brief description of the drawings]
FIG. 1A is an overall side view of a combine.
(B) is the principal part perspective view in a driving | running cabin same as the above.
FIG. 2A is a front view of a main part of a main transmission lever.
(B) is the principal part side view same as the above.
FIG. 3 is a power transmission system diagram of a combine.
FIG. 4 is a connection control diagram of sensors and switches.
FIG. 5 is a flowchart of conveyance drive control.
FIG. 6 is a graph showing the relationship between pre-processing drive speed and travel speed.
[Explanation of symbols]
12 Engine 10 Main transmission lever A Traveling transmission system 2 Preprocessing part B Preprocessing transmission system 1 Combine 9a Forced take-in switch (switching means)
9b Lodging switch (mode switch)

Claims (3)

A traveling transmission system that transmits the output from the engine to the traveling device through a switching operation of a main transmission lever provided in the traveling transmission, and before the output from the engine is transmitted to the preprocessing unit through the preprocessing transmission. In a combine provided with a processing transmission system and provided with a speed interlocking means for changing the driving speed of the preprocessing unit in conjunction with the traveling speed,
The pretreatment transmission system is a transmission system branched from the engine and the traveling transmission system, and the preprocessing transmission system is provided with a dedicated work machine HST for changing the drive speed of the preprocessing unit,
While providing a transmission rotation sensor that detects a traveling speed in the traveling transmission system, a conveyance rotation detection sensor that detects a driving speed of a preprocessing unit is disposed in the preprocessing transmission system,
The driving speed of the pre-processing unit based on the detection of the conveyance rotation detection sensor is changed in conjunction with the change of the traveling speed based on the detection of the transmission rotation detection sensor, and the vehicle is stopped in a state where the vehicle travel is stopped. Standard speed control for stopping the driving of the processing unit, and the driving speed of the preprocessing unit based on the detection of the conveyance rotation detection sensor is held constant regardless of the change in the traveling speed based on the detection of the transmission rotation detection sensor , A pre-processing control apparatus for a combine, comprising switching means for constant speed control that enables driving of the pre-processing unit in a state in which the airframe travel is stopped. 2. The front of the combine according to claim 1, wherein the main speed change lever is provided with a mode changeover switch that is linked to a running speed at a driving speed of a preprocessing unit different from the standard speed control. Processing control device. 3. The pre-processing control device for a combine according to claim 1, wherein a switching means is provided on a side portion of the grip portion of the main transmission lever, and a mode change switch is provided on the front portion of the main transmission lever.

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