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Control device and method for wheel type mechanical hydraulic travelling system

A technology of mechanical hydraulics and control methods, which is applied in the direction of control devices, transportation and packaging, and driver input parameters. Operational fatigue and the effect of reducing throttling loss

Active Publication Date: 2016-06-15
SUNWARD INTELLIGENT EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to avoid the above-mentioned problems of poor control feeling, large impact and poor control flexibility caused by the energy loss caused by driving at low speed when the engine is at high speed or the driving speed cannot be added when the engine is at low speed. Control device and method for wheeled mechanical hydraulic driving system

Method used

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  • Control device and method for wheel type mechanical hydraulic travelling system
  • Control device and method for wheel type mechanical hydraulic travelling system
  • Control device and method for wheel type mechanical hydraulic travelling system

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Embodiment Construction

[0059] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0060] according to figure 1 As shown, the stroke of the accelerator pedal 7 is detected by the pedal detection mechanism 20, the pressure of the main hydraulic pump 15 is detected by the pressure detection mechanism 22, the pressure of the brake control valve 38 is detected by the brake pressure detection mechanism 39, and the rotational speed of the engine 1 is detected by the rotational speed Mechanism 19 detects, and travel speed detection mechanism 41 detects vehicle speed, and the detection signal of above-mentioned detection mechanism is jointly input into control unit 30, and display mechanism input mechanism 18 realizes data exchange and control with control unit 30, accelerator control unit 25, the first The solenoid valve 9, the second solenoid valve 12, the third solenoid valve 31 and the control unit 30 realize data exchange and control, an...

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Abstract

The invention discloses a control device and method for a wheel type mechanical hydraulic travelling system. Based on a control unit, state quantities including pressure, rotating speed, electric currents, positions and the like are detected, a first magnetic valve, a second magnetic valve and a third magnetic valve are controlled, besides, a damping device is additionally arranged on a pilot oil line, and too big impact during starting and stopping is avoided. An accelerator pedal and running speed are in real-time matching, so that the maneuvering flexibility is improved, and maneuvering comfort and driving feeling are enhanced; the throttling losses when a running control valve is not fully opened are reduced, energy is saved, and the control response speed is increased; control on manual switch and automatic switch under various travelling operating conditions is realized, the trouble that a manipulator frequently adjusts various travelling modes is reduced, and the operation fatigue feeling is reduced; pressure impact during starting and stopping is reduced, and better comfort is achieved.

Description

technical field [0001] The invention relates to a control device and method for a wheeled mechanical hydraulic driving system. Background technique [0002] Hydrostatic drives are widely used in mobile machinery as shown in the figure 1 , because in its driving system, changes in engine speed, main pump displacement, travel valve opening, travel motor displacement and other parameters will cause changes in driving speed, and its input is a multivariate system. Therefore, the general control method of the traditional hydrostatic drive driving system is to fix the engine throttle and other parameters before driving and only control the driving speed by adjusting the opening of the driving valve. The traditional hydraulic driving system such as figure 2 As shown, the hydraulic pedal (60) controls the walking control valve (10), and the first solenoid valve (9) controls whether the driving direction is forward or backward, because the walking control valve (10) does not work ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W30/14B60W10/04B60W10/06B60W10/30
CPCB60W10/04B60W10/06B60W10/30B60W30/143B60W2510/0638B60W2540/10
Inventor 何清华刘均益陈艳军何耀军
Owner SUNWARD INTELLIGENT EQUIP CO LTD
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