Control device for closed walking system of wheel excavator

A traveling system and control device technology, applied in the direction of earth mover/shovel, construction, etc., can solve the problems of inability to meet the requirements of driving speed and direction adjustment, achieve smooth speed adjustment process, solve low efficiency, and improve acceleration performance effect

Active Publication Date: 2021-06-22
XCMG EXCAVATOR MACHINERY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The hydraulic excavators in the prior art all adopt the open system of quantitative pump or one-way variable pump and quantitative motor in the walki

Method used

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  • Control device for closed walking system of wheel excavator

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Embodiment Construction

[0042] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, and are not intended to limit the protection scope of the present invention.

[0043] The application principle of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0044] Such as figure 1 As shown, the present invention provides a control device for a closed walking system of a wheeled excavator, including:

[0045]The controller 18 is used to connect with the electronic accelerator pedal 22, the direction switch 23 and / or the gear switch 24, and collect preset signals;

[0046] An engine control module 21, connected to the controller 18;

[0047] Traveling pump unit, used to be connected with engine 19...

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Abstract

The invention discloses a control device and method for a closed walking system of a wheel excavator. The control device comprises a controller, an engine control module, a pressure sensor unit, a walking pump proportional control valve unit, a walking motor unit and a walking motor proportional control valve unit, and the controller is used for being connected with an electronic accelerator pedal, a direction switch and/or a gear switch. The engine control module is connected with the controller. Two ends of the pressure sensor unit are respectively connected with the walking pump unit and the controller. Two ends of the walking pump proportional control valve unit are respectively connected with the walking pump unit and the controller. An oil inlet of the walking motor unit is connected with an oil outlet of the walking pump unit, and an oil outlet is connected with an oil inlet of the walking pump unit. Two ends of the walking motor proportional control valve unit are respectively connected with the walking motor unit and the controller. One end of a rotating speed sensor is connected with the walking motor unit, and the other end is connected with the controller. Direction adjustment and stepless speed adjustment of the excavator can be achieved.

Description

technical field [0001] The invention belongs to the technical field of excavator control, and in particular relates to a control device for a closed walking system of a wheeled excavator. Background technique [0002] In recent years, with the acceleration of urbanization in our country, the country has increased the amount of engineering construction in the fields of transportation, construction, and water conservancy projects. The market demand for construction machinery across the country has increased sharply, especially the demand for hydraulic excavators has continued to grow. Because of the needs of transition and emergency rescue, the requirements for the driving speed of excavators are getting higher and higher. [0003] The hydraulic excavators in the prior art all adopt quantitative pumps or open systems of unidirectional variable pumps and quantitative motors in the walking system, which are limited by open hydraulic components and cannot meet the requirements of...

Claims

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Application Information

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IPC IPC(8): E02F9/22
CPCE02F9/2246E02F9/225E02F9/2253E02F9/2292
Inventor 郑磊
Owner XCMG EXCAVATOR MACHINERY
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