JP2004187506A - Reaping speed change structure of reaping harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the operation efficiency of a reaping speed change apparatus when the reaping speed change apparatus is installed in a reaping transmission system in a reaping speed change structure of a reaping harvester. <P>SOLUTION: The reaping transmission system is branched from the space between a traveling speed change apparatus 7 and a traveling apparatus 1 and composed so as to transmit power to a reaping part 2. The reaping speed change apparatus 15 is installed in the reaping transmission system and an actuator 16 for operating the reaping speed change apparatus 15 is provided. An artificially operated speed change operation tool 19 for operating the actuator 16 is installed in a speed change lever 17 of the traveling speed change apparatus 7. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a structure of a speed change operation of a reaper in a reaper.
[0002]
[Prior art]
In the reaper and harvester, generally, the power of the engine is configured to be transmitted to the traveling device via the traveling transmission, the reaping transmission system is branched from between the traveling transmission and the traveling device, and the reaper is transmitted through the reaping transmission system. The power is transmitted to the reaping unit, and the power shifted by the traveling transmission is transmitted to the traveling device and the reaping unit. This is because the driving speed of the reaping unit can be obtained in accordance with the traveling speed of the machine body by linking the driving speed of the traveling device with the driving speed of the reaping unit.
[0003]
For example, when a crop in a field is lying down, the reaper sometimes cuts the traveling speed of the machine greatly reduced. In this case, if the traveling transmission is largely operated to the low speed side, the driving speed of the mowing unit is also greatly reduced, and conversely, a situation may occur in which the crops in the field cannot be cut well.
Thereby, as disclosed in Patent Document 1, for example, a mowing transmission system is provided with a mowing transmission (22 in FIG. 1 of Patent Document 1), and the traveling transmission is largely shifted to a lower speed side as described above. Even if the operation is performed, the driving speed of the reaping unit can be prevented from being greatly reduced by operating the reaping transmission to the high speed side by that amount (the driving speed of the reaping unit can be maintained).
[0004]
[Patent Document 1]
JP-A-2-23811 (FIG. 1)
[0005]
[Problems to be solved by the invention]
According to the structure of Patent Literature 1, a mowing transmission lever (24 in FIG. 1 of Patent Literature 1) for operating the mowing transmission is provided. Thus, for example, when the driver shifts the shift lever for operating the traveling transmission largely by hand to the low speed side, the driver separates the same hand from the shift lever and switches to the cutting shift lever to operate the cutting shift lever. As a result, there is room for improvement in operability.
SUMMARY OF THE INVENTION It is an object of the present invention to improve the operability of a mowing transmission when a mowing transmission is provided with a mowing transmission in a mowing transmission structure of a mowing harvester.
[0006]
[Means for Solving the Problems]
[I]
According to the first aspect of the present invention, the vehicle is configured to transmit the power of the engine to the traveling device via the traveling transmission, and provided with a shift lever for operating the traveling transmission. The reaping transmission system is branched to transmit power to the reaping unit via the reaping transmission system. The mowing transmission system is provided with a mowing transmission, and an actuator for operating the mowing transmission is provided.
[0007]
Thus, according to the first aspect of the present invention, for example, when the driver manually operates the shift lever to a low speed side, the driver holds the shift lever with the same hand without releasing the same hand from the shift lever. The shift operating tool can be operated in the state, and the slash transmission can be operated by operating the shift operating tool.
[0008]
In this case, according to the first aspect of the present invention, an actuator for operating the reaping transmission is provided, and the actuator is operated by operating the speed change operation tool, and the reaping transmission is operated by the actuator. Thus, the shift operating tool may be an electric switch, so that the operation of the shift operating tool can be performed lightly.
[0009]
[II]
According to the feature of the second aspect, similar to the case of the first aspect, the "operation" described in the above [I] is provided, and in addition, the following "operation" is provided.
In a reaper, the traveling transmission may be configured as a continuously variable transmission such as a hydrostatic type or a belt type. Thus, according to the second aspect of the present invention, since the reaper transmission is configured as a continuously variable transmission, it is possible to finely set the shift position of the reaper transmission in accordance with the shift position of the traveling transmission. .
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
As shown in FIG. 1, a mowing unit 2 is provided at a left front portion of a body supported by a crawler-type right and left traveling device 1, and an operating unit 3 is provided at a right front portion of the body. A threshing device 4 is provided at the rear left portion, and a Glen tank 5 is provided at the right rear portion of the fuselage. A combine for rice, which is an example of a reaper, is configured. Thereby, the culm in the field is cut by the cutting unit 2, threshing is performed by the threshing device 4, and the grains collected by the threshing device 4 are supplied to the Glen tank 5.
[0011]
As shown in FIG. 2, a traveling transmission case 6 is provided, a hydrostatic continuously variable transmission 7 is connected to the transmission case 6, and the power of an output shaft 8a of the engine 8 is controlled by a belt-type tension. It is transmitted to the input shaft 7a of the hydrostatic continuously variable transmission 7 via the clutch 9. A gear transmission-type auxiliary transmission 10 capable of shifting between two high and low stages is provided inside the transmission case 6, and the power of the output shaft 7b of the hydrostatic continuously variable transmission 7 is transmitted by the auxiliary transmission 10, right and left. Are transmitted to the right and left traveling devices 1 via side clutches (not shown). The power of the output shaft 8a of the engine 8 is transmitted to the input shaft 4a of the threshing device 4 via a belt-type tension clutch 11.
[0012]
As shown in FIG. 2, an output shaft 12 is provided in the transmission case 6, an intermediate shaft 13 is disposed between the output shaft 12 and the reaper 2, and an output shaft 7 b of the hydrostatic continuously variable transmission 7 is provided. Is transmitted to the output shaft 12, and the power of the output shaft 12 is transmitted to the intermediate shaft 13 via the belt-type tension clutch 14. A belt-type continuously variable transmission 15 is configured between the intermediate shaft 13 and the input shaft 2a of the reaper 2, and an electric cylinder 16 for operating the continuously variable transmission 15 is provided. The continuously variable transmission 15 has a transmission ratio of 1: 1 at the lowest speed position, and is configured to be operable from the lowest speed position (transmission ratio 1: 1) to the speed increasing side.
[0013]
The hydrostatic continuously variable transmission 7 is configured to be operable at a high speed side of forward movement, at a high speed side of reverse movement, and at a neutral position. As shown in FIGS. 1 and 2, a shift lever 17 provided in the driving unit 3 is provided. The operation of the hydrostatic continuously variable transmission 7 is performed by this. As shown in FIGS. 2 and 3, a lever guide 18 that is linear with respect to the shift lever 17 is provided, and the lever guide 18 is provided with a neutral position N1, a forward shift range F, and a reverse shift range R. Thus, when the shift lever 17 is operated to the neutral position N1, the hydrostatic continuously variable transmission 7 is operated to the neutral position, and when the shift lever 17 is operated to the forward shift range F, the hydrostatic continuously variable transmission 7 is operated. Since it is operated on the forward side, the hydrostatic continuously variable transmission 7 can be operated between the neutral position N1 and the fastest forward position FM. When the shift lever 17 is operated to the reverse speed change range R, the hydrostatic continuously variable transmission 7 is operated to the reverse side, and the hydrostatic continuously variable transmission 7 is switched between the neutral position N1 and the reverse most high speed position RM. 7 can be operated.
[0014]
As shown in FIGS. 2, 3, and 4, an operation switch 19 is provided on the side of the grip 17a at the upper end of the shift lever 17, and the driver holds the grip 17a of the shift lever 17 with his left hand, for example. In this state, the operation switch 19 can be operated back and forth with the left thumb. The operation switch 19 is configured to be operable at a neutral position N2, a front acceleration position H, and a rear deceleration position L, and is biased to the neutral position N2 by a spring (not shown).
[0015]
Thus, as shown in FIGS. 2 and 3, when the operation switch 19 is operated to the speed increasing position H, the continuously variable transmission 15 is operated to the speed increasing side by the electric cylinder 16, and the operation switch 19 is set to the neutral position. When operated to the position N2, the electric cylinder 16 stops, and the continuously variable transmission 15 is held at the shift position where the electric cylinder 16 has stopped. When the operation switch 19 is operated to the deceleration position L, the continuously variable transmission 15 is operated to the deceleration side by the electric cylinder 16, and when the operation switch 19 is operated to the neutral position N2, the electric cylinder 16 is stopped and the electric cylinder 16 is stopped. The continuously variable transmission 15 is held at the shift position where the cylinder 16 is stopped.
[0016]
In this case, an indicator (not shown) for displaying the shift position of the continuously variable transmission 15 is provided in the driving unit 3, and the driver visually checks the indicator to check the shift position of the continuously variable transmission 15. While operating the operation switch 19. When the continuously variable transmission 15 is operated to the lowest speed position (transmission ratio 1: 1) and the highest speed position by the electric cylinder 16, the electric cylinder 16 is stopped regardless of the operation of the operation switch 19, and the continuously variable transmission 15 is operated. 15 is held at the lowest speed position (transmission ratio 1: 1) and the highest speed position.
[0017]
[Another embodiment of the invention]
In the above-mentioned [Embodiment of the invention], a hydrostatic stepless transmission or a gear transmission having a plurality of shift positions may be used instead of the belt-type stepless transmission 15. Good.
INDUSTRIAL APPLICABILITY The present invention is applicable not only to combine harvesters for rice but also to harvesters and harvesters for barley and soybeans, and to harvesters and harvesters for rush.
[0018]
【The invention's effect】
According to the first aspect of the present invention, in the reaper speed change structure of the reaper and harvester, for example, when the driver manually operates the shift lever to a lower speed side, the driver can use the same hand without releasing the same hand from the shift lever. Thus, the user can operate the speed change operation device while holding the speed change lever to operate the reaping transmission, thereby improving the operability of the reaping transmission.
In this case, according to the first aspect of the present invention, the actuator for operating the reaping transmission is provided, and the operation of the speed change operation tool becomes light, so that the operability of the reaping transmission can also be improved in this respect. did it.
[0019]
According to the feature of the second aspect, similar to the case of the first aspect, the "effect of the invention" of the above-described claim 1 is provided. It has.
According to the feature of the second aspect, by configuring the reaper transmission as a continuously variable transmission, it is possible to finely set the shift position of the reaper transmission in accordance with the shift position of the traveling transmission, thereby enhancing the functionality. Could be something.
[Brief description of the drawings]
FIG. 1 is an overall side view of a combine. FIG. 2 is a schematic view showing a transmission structure from an engine to right and left traveling devices and a reaping unit. FIG. 3 is a plan view of a shift lever, a lever guide, and an operation switch. ] A perspective view of the grip portion of the shift lever and the operation switch.
REFERENCE SIGNS LIST 1 traveling device 2 reaping section 7 traveling transmission 8 engine 15 reaping transmission 16 actuator 17 shift lever 19 shift operation tool

Claims (2)

A transmission lever configured to transmit the power of the engine to the traveling device via the traveling transmission, and operating the traveling transmission,
By branching the reaping transmission system from between the traveling transmission and the traveling device, and configured to transmit power to the reaping unit via the reaping transmission system,
The mowing transmission system includes a mowing transmission, and an actuator that operates the mowing transmission.
A reaping and shifting structure of a reaper, wherein the shifting lever is provided with a shift operating tool which is manually operated by operating the actuator. The reaper transmission structure of a reaper according to claim 1, wherein the reaper transmission is configured as a continuously variable transmission.

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