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Walking controller of operation car

A technology of control device and running device, which is applied in the layout of power device control mechanism, transmission device control, agriculture, etc., and can solve problems such as no further acceleration and difficult operation of the driver

Inactive Publication Date: 2009-06-10
KUBOTA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, when the driver moves the vehicle speed command mechanism to the acceleration side, the driving speed will correspond to the moving operation of the vehicle speed command mechanism even before the vehicle speed command mechanism is operated to a position corresponding to the aforementioned intermediate speed in the predetermined operating range. And accelerate accordingly, but after exceeding this position, even if you operate further to the high-speed side, you can no longer accelerate
[0017] For example, if the maximum speed of a certain car body is 50km / h, if the driver indicates the upper limit value (here 50km / h) through the vehicle speed command mechanism, if the output speed of the engine is low, although it reaches the predetermined Before the intermediate speed corresponding to the intermediate position in the operating range (for example, before reaching 25km / h), it can accelerate proportionally. , and sometimes can no longer accelerate
[0018] Therefore, there is such a disadvantage that, in the predetermined operation range of the vehicle speed command mechanism, from the position corresponding to the aforementioned intermediate speed to the high-speed side, although the driver manually controls the vehicle speed to increase the speed The mechanism moves to the high-speed side, and the speed of the car body does not accelerate, which will make the driver feel difficult to operate, or mistakenly think that the transmission system has failed, etc.

Method used

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  • Walking controller of operation car
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Examples

Experimental program
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no. 1 Embodiment approach

[0105] First, a first embodiment of a travel control device for a work vehicle according to the present invention will be described with reference to FIGS. 1 to 9 .

[0106] The combine harvester that shows its whole side with Fig. 1 relies on the driving travel of left and right pair of crawler-type traveling device (one example of traveling device) 1R, 1L. In the front portion of walking body 2, be connected with liftable, the reaping conveying device (an example of operating device) 3 that reaps the upright ear bar that is transported to the rear. On the traveling body 2, a threshing device (an example of a working device) 4 that accepts the harvested ear stems from the harvesting conveying device 3 and implements threshing and sorting processing, and a grain storage device that stores the grains from the threshing device 4 are installed. Slot 5. And the driver part 6 is formed in the front of the grain tank 5. As shown in FIG.

[0107] The composition of the driving mech...

no. 2 Embodiment approach

[0162] Next, a second embodiment of the travel control device for a work vehicle according to the present invention will be described.

[0163] This second embodiment is the same as the above-mentioned first embodiment except that the configuration for implementing "speed synchronization processing" in the straight-forward control performed by the aforementioned control device is different. Therefore, in the following description, only the configuration different from the first embodiment will be described, and the description of the same configuration will be omitted.

[0164] In the above-mentioned first embodiment, in the "speed synchronization process", the shift position of the trunnion 29 of the pair of continuously variable transmission devices 11R, 11L is always positioned on the far side from the stop shift position (neutral position). The continuously variable transmission is designated as the "reference continuously variable transmission". On the other hand, in thi...

no. 3 Embodiment approach

[0172] Next, a third embodiment of the travel control device for a work vehicle according to the present invention will be described.

[0173] This third embodiment is the same as the above-mentioned first embodiment except that the configuration for implementing "speed synchronization processing" in the linear control performed by the aforementioned control device is different. Therefore, in the following description, only the Configurations different from those of the first embodiment will be described, and descriptions of the same configurations will be omitted.

[0174] In the above-mentioned first embodiment, in the "speed synchronization process", the shift position of the trunnion 29 of the pair of continuously variable transmission devices 11R, 11L is always positioned on the far side from the stop shift position (neutral position). The continuously variable transmission is designated as the "reference continuously variable transmission". In contrast, in the third emb...

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PUM

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Abstract

To provide a travelling control device of a working vehicle which favorably carries out car speed command operation while maintaining a straight forwarding state even when output rotating speed of an engine changes. Target speed-change positions of a pair of non-stage transmissions 11R, 11L to separately change respective travelling speed of a pair of left and right travelling devices in non-stage, a pair of hydraulic cylinders 33R, 33L to operate to change speed of them and a pair of operated bodies 29 corresponding to a command position of a main speed-change lever 24 are set, a pair of the hydraulic cylinders 33R, 33L is actuated so as to be at the target speed-change position, and a pair of the hydraulic cylinders 33R, 33L is actuated so that output speed of a pair of the non-stage transmissions 11R, 11L becomes target speed for synchronization when a speed-change position of either one of the operated bodies 29 becomes the target speed-change position.

Description

technical field [0001] The invention relates to a travel control device for work vehicles such as a combine harvester. More specifically, the present invention relates to such a travel control device for a working vehicle, which has: [0002] A pair of left and right running devices driven by the power of the engine; [0003] A pair of continuously variable transmission devices for traveling that respectively change the traveling speed of the pair of left and right traveling devices; [0004] A pair of actuators for respectively performing speed change operations on the pair of continuously variable transmission devices for traveling; [0005] A vehicle speed command mechanism that can be freely moved and operated within a predetermined operating range including the stop command position that instructs the traveling body to stop, and the greater the movement operation amount relative to the stop command position, the higher the speed indicated; [0006] a rotary instruction...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H61/42B62D11/04A01D69/00A01D41/00B60K26/00
CPCA01D41/1274A01D69/03
Inventor 山中之史上田吉弘林繁树加藤裕治
Owner KUBOTA CORP