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Control apparatus for steering mechanism

A technology for control devices and steering mechanisms, applied to steering mechanisms, electric steering mechanisms, automatic steering control components, etc., can solve problems such as power reduction

Inactive Publication Date: 2013-05-08
JTEKT CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] If the power consumption temporarily increases, the on-vehicle battery temporarily increases a lot of load, and the electric power that can be supplied to the driving motor and the steering assist motor decreases, so it may not be possible to drive forward / backward according to the driver's intention.

Method used

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  • Control apparatus for steering mechanism
  • Control apparatus for steering mechanism
  • Control apparatus for steering mechanism

Examples

Experimental program
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Embodiment Construction

[0019] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0020] figure 1 It is a schematic side view of an electric forklift.

[0021] The car body 2 of the electric forklift 1 has a front wheel 5 as a driving wheel and a rear wheel 6 as a steering wheel, a loading and unloading device 3 arranged at the front of the car body 2 , and a distribution device arranged at the rear of the car body 2 . A weight 4 , a drive source 9 including a drive motor of the vehicle, and a power transmission device 8 for connecting the drive source 9 to the front wheels 5 . Furthermore, a vehicle steering device 7 for steering the rear wheels 6 is also provided.

[0022] The electric forklift 1 includes a cab 26 including a driver's seat 21 . Cab 26 is formed on vehicle body 2 in a state surrounded by frame 23 . A shift lever support supporting the shift lever 24 is provided in the cab 26 .

[0023] The vehicle steering device 7 is...

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PUM

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Abstract

The invention provides a control apparatus for steering mechanism. In a material handling vehicle such as an electric forklift, a depression amount of an accelerator pedal (26) that provides an instruction on a control amount of a drive motor (9) for driving a drive wheel (5) is detected. When the depression amount of the accelerator pedal (25) is equal to or larger than a predetermined value and a forward-backward switching signal that indicates that a shift lever (24) is operated is received, a drive current for a steered system motor (19) is set to a value smaller than a normal drive current within a predetermined time period (T) that starts upon reception of the forward-backward switching signal.

Description

technical field [0001] The invention relates to a control device for a steering mechanism of a loading and unloading vehicle. Background technique [0002] In recent years, the electrification of loading and unloading vehicles is progressing, and the steering mechanism is also tending to be electrified. In a steering mechanism that steers a wheel with a large steering friction, the power consumption of the actuator is large, and the load on the on-vehicle battery also increases. For example, refer to Japanese Patent Application Laid-Open No. 2000-128005. [0003] In particular, in an electric forklift, which is an electric loading and unloading vehicle, when a forward / reverse shift operation is performed, the accelerator is kept in a nearly fully open state and the shift operation is often performed. [0004] In this case, since the drive wheels are driven by the drive motor and the steering mechanism is also driven by the steering assist motor, a large amount of electric ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D5/04B62D6/00
CPCB66F9/24
Inventor 叶山良平
Owner JTEKT CORP
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