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Work vehicle

A working vehicle and movement technology, which is applied to vehicle components, agriculture, motor vehicles, etc., can solve problems such as the inability of working vehicles to drive automatically, and achieve the effect of preventing the reduction of operating efficiency and reliability

Pending Publication Date: 2020-12-11
YANMAR POWER TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Since a work vehicle that can run autonomously in an unmanned state is originally configured to travel by the driver of a passenger, there are cases where the work vehicle cannot be driven automatically for a long period of time.
In such a case, when the work vehicle is automatically driven, there is a possibility that the brake operating system for emergency stop may not operate normally.

Method used

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Embodiment Construction

[0061] Hereinafter, an embodiment in which the present invention is applied to a tractor as an example of a work vehicle will be described based on the drawings as an example of a mode for implementing the present invention.

[0062] In addition, the present invention can be applied to passenger working vehicles such as passenger lawn mowers, passenger rice transplanters, combines, trucks, wheel loaders, and snow plows other than tractors.

[0063] Such as Figure 1~2 As shown, the tractor 1 exemplified in this embodiment is configured to be able to automatically travel in a field or the like as an example of a work site by an automatic travel system for a work vehicle. The automatic driving system includes an automatic driving unit 2 mounted on the tractor 1 , and a mobile communication terminal 3 as an example of a wireless communication device configured to communicate with the automatic driving unit 2 by wireless communication. As the portable communication terminal 3 , a...

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PUM

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Abstract

The present invention makes it possible to avoid the risk of a brake operation system for emergency stopping not operating normally during autonomous travel of a work vehicle. A work vehicle is provided with: a foot brake for braking left and right rear wheels; an autonomous travel unit that enables autonomous travel of the vehicle; and an electric actuator for switching the foot brake between a braking state and a release state. The autonomous travel unit comprises a control unit (22Fa) for controlling the operation of the electric actuator. When an autonomous travel mode is selected by humanoperation of a mode selection unit, the control unit (22Fa) performs operation verification processing in which it is verified by operation control of the electric actuator whether the foot brake isoperating normally, and when it is verified that the foot brake is operating normally in the operation verification processing, said control unit (22Fa) transitions to a completed operation verification state and allows the travel mode to transition from a manual travel mode to the autonomous travel mode.

Description

technical field [0001] The present invention relates to a work vehicle including a service brake for braking a traveling device. Background technique [0002] In passenger cars, there are devices that perform emergency braking control when there is a risk of collision with a preceding vehicle as a driving assistance device and a driving assistance method (for example, refer to Patent Document 1). [0003] Patent Document 1: Japanese Patent Application Laid-Open No. 2017-43193 [0004] In recent years, in work vehicles such as tractors, automation that enables the work vehicles to run autonomously has been promoted using satellite positioning systems (NSS: Navigation Satellite System) such as GPS (Global Positioning System). If the automation of such work vehicles is promoted, unmanned work vehicles that can run autonomously under unmanned conditions can be promoted. brake system. [0005] Since a work vehicle that can run autonomously in an unmanned state is originally co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T17/22B60T7/04
CPCB60T7/042B60T7/06B60T7/12B60T2220/04B60Q9/00G05G1/44G05G11/00G05G1/01B60W60/0051B60W2540/12B60W2540/215B60W50/0205B60W2050/022B60W2300/152B60Q2800/20B60W50/029B60W10/18B60T17/221B60T13/741A01B69/00G05D1/0061G05D2201/0213A01B69/008B60T11/04B60T2270/406G05D2201/0201
Inventor 池乘健太
Owner YANMAR POWER TECHNOLOGY CO LTD