Method for setting response modes of construction vehicle operation lever

a technology for operation levers and construction vehicles, applied in mechanical devices, constructions, couplings, etc., can solve problems such as and affecting the operation of construction vehicles

Inactive Publication Date: 2005-09-22
VOLVO CONSTR EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0011] It is, therefore, an object of the present invention to provide a method for setting response modes of an operation lever in construct

Problems solved by technology

When the operation lever is manipulated fast, the control valve's spool, which supplies hydraulic fluid to an actuator for driving a working apparatus, starts moving violently.
Therefore, shock-induced vibration is generated at the start or end of the operation of the actuator, and repeatedly generated vibration makes drivers feel more tired.
Even though an experienced driver is able to operate the operation lever with great delicacy and skill and to move the working apparatus gently, a beginner often has difficulty in handling the operation lever, especially for starting and finishing the operation of the lever because of shock-induced vibration generated by the inertia of the working apparatus.
As aforementioned, the vibration generated at the start or end of the o

Method used

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  • Method for setting response modes of construction vehicle operation lever
  • Method for setting response modes of construction vehicle operation lever
  • Method for setting response modes of construction vehicle operation lever

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Embodiment Construction

[0021] A preferred embodiment of the present invention will be described herein below with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

[0022]FIG. 1 is a schematic diagram of a hydraulic system to which a method for setting response modes of an operation lever according to one embodiment of the present invention is applied.

[0023] The hydraulic system to which a method for setting response modes according to one embodiment of the present invention is applied includes hydraulic pump 11 driven by an engine 10, an actuator 13 for driving a working apparatus (not shown) using hydraulic fluid supplied from the hydraulic pump 11, a control valve 14 for supplying the hydraulic fluid in the hydraulic pump 11 to the actuator 13, an operation lever 16 for generating an operation signal to drive the actuator 13, a controller 18 for changing th...

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Abstract

The present invention discloses a method for freely setting response modes of the operation lever of construction vehicle, according to driver's skills or proficiency and work characteristics, in which the method includes the steps of: receiving a mode signal from a mode selection means, and selecting one of a plurality of selection modes; receiving an operation signal from the operation lever; filtering the operation signal through a filter which is operating in response to the selected response mode; and outputting a filtered control signal.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates in general to an operation lever of a construction vehicle, and more particularly, to a method for freely setting response modes of the operation lever of a construction vehicle according to the skills or proficiency of a driver and work characteristics. [0003] 2. Description of the Related Art [0004] In general, construction vehicle including an excavator has an operational lever like a joystick, which operates working apparatus such as a boom, arm, bucket, and swing unit. Hydraulic pressure from an engine-driven hydraulic pump is a driving power source of operations of the working apparatus. The construction vehicle also have a controller that controls a control valve according to the control signal of the operation lever and thus, controls the pressure, direction and flow of hydraulic fluid supplied to working apparatus. [0005] Sometimes drivers tend to move the operation lever quick...

Claims

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Application Information

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IPC IPC(8): E02F9/20E02F9/22
CPCE02F9/2025E02F9/2062E02F9/20
Inventor KIM, DONG SOO
Owner VOLVO CONSTR EQUIP
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