JPS5837232Y2 - mobile harvester - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a mobile harvester equipped with a main transmission device that changes the speed of a traveling device, and a sub-transmission device that changes the speed changed by the main transmission device into multiple speeds. It is.

In such a mobile harvester, the main transmission is used to switch between forward height and low speed, as well as forward and backward movement, and the sub-transmission changes the speed changed by the main transmission to high. The vehicle is operated to the low speed side in the field, and to the high speed side when driving on the road or in similar driving conditions.

Furthermore, conventionally, by synchronizing changes in vehicle speed and changes in hoisting speed, it is possible to prevent the culm from tipping forward due to a delay in hoisting speed relative to vehicle speed, and the culm pull-out phenomenon caused by an increase in hoisting and reaping speed relative to vehicle speed. was configured to avoid this.

However, the vehicle speed change range includes high-speed ranges that are unsuitable for hoisting work such as driving on the road, so if the operator accidentally operates in that high-speed range during hoisting, the culm junction may be torn to shreds. There is a risk of grain shedding.

Therefore, it is necessary to disable the driving of the pulling device in a high-speed travel range above a certain level.

Therefore, in addition to a configuration that synchronizes the speed with the vehicle speed,
When the vehicle speed reaches a certain level or higher, a structure is required to cut off the drive of the pulling device, and a means incorporating such an automated structure would require complicated structural fabrication.

The present invention aims to solve such problems.

The mobile harvester of the present invention is configured to synchronize at least the supply speed of the pulling device with the vehicle speed, and is configured to cut off the drive to the pulling device in conjunction with the operation of the sub-transmission to the high speed range side. At the same time, an operation to cut off the drive of the pulling device based on the operation of the sub-transmission device to the high speed range side,
It is characterized in that it is configured to cut off the gear engagement interlock that transmits power to the pulling device in conjunction with the operation of the shift fork of the sub-transmission device in the traveling transmission case.

In other words, when operating the auxiliary transmission to the high speed side and switching the machine's traveling speed to high speed travel without harvesting, the drive of the hoisting device is automatically cut off, so when traveling at high speed (
This prevents the lifting device from being driven unnecessarily.

Therefore, by increasing and decreasing the lifting speed in synchronization with the vehicle speed, the culm per unit time can be pulled up easily and smoothly, and a separate operation for cutting off the driving of the lifting device is not required. It has now been possible to reliably avoid unnecessary operation of the lifting device without doing so.

Moreover, the operation of turning off the drive of the traction device based on the operation of the auxiliary transmission to the high speed range side is performed by linking the clutch operation lever of the traction device and the operation lever of the auxiliary transmission through a link or the like. Rather, the gear engagement of the traction device in the traveling transmission case is interlocked with the shift fork operation of the auxiliary transmission lever (7).
Each operating lever is arranged without being restricted by a link connecting the clutch operating lever of the pulling device and the operating lever of the sub-transmission device, etc. in the lever arrangement relationship arranged to facilitate aircraft control operations. It has the advantage of being able to

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 shows a combine harvester as an example of a mobile harvester, in which a planted culm pulling device 1 is provided at the front of the machine, and a reaping device 2 is provided near the ground by which the pulling device 1 is pulled out. Further, at the rear, a harvested husk culm removal force conveying device 5 is disposed that delivers the harvested husk culm to a feed chain 4 attached to a threshing device 3 mounted on the rear of the machine, and includes the feed chain 4 as well. A cut culm supply device 6 is configured.

The traveling body 7 is equipped with a crawler-type left and right traveling device 8 9 , and the traveling devices 8 and 9 are connected to a hydraulic continuously variable transmission (main transmission) 1 in which the output from the installed engine E is transmitted to the traveling device 8 , 9 .
0, a chain transmission device 11, and a transmission M as a sub-transmission device.

Further, the driving force is transmitted from the mission M to the cut husk supply device 6, and the cut culm supply device is operated in synchronization with the vehicle speed changed by operating the operating lever 12 linked to the main transmission 10. The culm feeding rate of No. 6 is configured to be changed.

In the above configuration, one embodiment of the present invention is configured as follows.

That is, the input shaft 13 of the mission M has a large-diameter small-diameter gear 14 .
A transmission gear 16 formed with a transmission gear 15 is spline-fitted so as to be slidable in the direction of the input shaft axis, and an intermediate shaft 18 is located between the input shaft 13 and a steering shaft 17 and a steering shaft 17 located on the lower side of the transmission shaft. A small-diameter large-diameter gear 19.20 is fixed to the shift gear 16, and the large-diameter small-diameter gear 14.15 of the shift gear 16 is changed by operating the sub-shift lever linked to the shift fork 21 of the shift gear 16 to switch between high and low and neutral. Small diameter large diameter gear 1 of intermediate shaft 18
9 and 20 constitute an auxiliary transmission device 40 that selectively engages or does not engage and shifts the vehicle speed to a low, high, or stopped state.

The drive to the cut husk supply device 6 side is configured as follows.

That is, the idling gear 22, which is always in mesh with the large-diameter gear 14 of the speed change gear 16, is loosely fitted to the supply intermediate shaft 23, and the first meshing portion 24 is formed inside the idling gear 22. The first movable member 25 is spline-fitted to the shaft 23.
A second meshing portion 26 that meshes with the fitting portion 24 is formed to constitute a clutch 27 that switches and supplies a state in which driving force is transmitted to the cut husk culm supply device 6 and a state in which it is not transmitted.

28 is a shifter. And the auxiliary transmission shifter 21
is loosely fitted into a recess 29 formed over a certain range in the movable member 25, and when the sub-transmission gear 16 is switched to the high speed side, the movable member 25 is forcibly moved in the direction of the non-meshing force. When the sub-shift is switched to the high speed side, the driving force to the cut husk supply device 6 is automatically cut off.

In this case, the clutch 27 cannot be engaged even if the shifter 28 is operated manually.

In a state in which the auxiliary transmission shift fork 21 is switched to a low speed side, and in a neutral state, the clutch 27 is configured to be manually operated by a shifter 28.

In other words, the present invention is configured to synchronize the supply speed of the cut husk supply device 6 with the vehicle speed, and cut off the drive to the supply device 6 in conjunction with the operation of the sub-transmission device 40 to the high speed range side. It is structured as best as possible.

In the figure, 30 indicates a parking brake mechanism, and among two axes (steering axis, intermediate axis) 17. A lock piece 34 is engaged with a fixed gear 32 and spline-fitted to the force shaft 17 by operating the parking brake operating lever 33.
meshes with the side part of the freely rotating gear 31, and both shafts 17
This prevents the relative rotation of 18° and stops the rotation of the axle.

In this case, the main clutch 35 is disconnected in conjunction with the operation of the parking brake lever 33 toward the brake activation side.

The main clutch 35 can be operated by operating the main clutch lever 36 when the parking brake mechanism 30 is not activated.

FIG. 4 shows a second embodiment, in which the constant engagement between the human power shaft 13 of the mission M and the reaping supply side intermediate shaft 23 is released,
Free rotation teeth 37, 3B are provided on the human power shaft 13 and the intermediate shaft 23, and the driving force is transmitted by sliding movement of the spline-fitted transmission gear 16 and movable member 25 by respective shifter operations. ing.

FIG. 5 shows a third embodiment, in which a shift fork 21' of a transmission gear 16 and a shifter 28' of a clutch 27 are linked by a wire 39.

[Brief explanation of drawings]

The drawings show an embodiment of the mobile harvester according to the present invention, Fig. 1 is an explanatory diagram of a combine harvester, Fig. 2 is a drive system diagram, Fig. 3 is a drive system diagram of the main parts, and Fig. 4 is an explanatory diagram of a combine harvester. Drive system diagram showing an embodiment. FIG. 5 is a drive system diagram showing a third embodiment. 1... Pulling device, 8, 9... Traveling device, 10... Main transmission device, 40... Sub-transmission device.

Claims (1)

[Scope of utility model registration request] In a mobile harvester including a main transmission 10 that changes the speed of the traveling devices 8 and 9, and a sub-transmission 40 that switches the speed changed by the main transmission 10 to a plurality of speeds, at least the pulling device 1 is provided. The supply speed of the sub-transmission device 40 is configured to be synchronized with the vehicle speed, and the drive to the pulling device 1 is cut off in conjunction with the operation of the sub-transmission device 40 to the high-speed range side. The shift fork 21 of the auxiliary transmission in the traveling transmission case
A mobile harvester characterized in that it is configured to cut off gear interlocking that transmits power to the pulling device 1 in conjunction with the operation of the pulling device 1.