Compound drive system and control method of electric excavator

An electric excavator and drive system technology, applied in the direction of earth mover/shovel, construction, etc., can solve the problems of low work efficiency of excavators, complain about controllability, and can not take into account all actions, so as to improve controllability and work. Efficiency and improved coordination

Active Publication Date: 2020-11-20
XCMG EXCAVATOR MACHINERY
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  • Claims
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Problems solved by technology

[0003] However, limited by the power of the engine, when the power of the hydraulic pump is constant, it is easy to have insufficient flow when performing compound actions,

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  • Compound drive system and control method of electric excavator
  • Compound drive system and control method of electric excavator
  • Compound drive system and control method of electric excavator

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Embodiment Construction

[0055] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is illustrative only, and in no way restricts the disclosure, its application or uses. The present disclosure can be implemented in many different forms and is not limited to the embodiments described here. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that relative arrangements of parts and steps, compositions of materials, numerical expressions and numerical values ​​set forth in these embodiments should be interpreted as illustrative only and not as limiting, unless specifically stated otherwise.

[0056] "First", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distin...

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Abstract

The invention relates to a compound drive system of an electric excavator. The compound drive system of the electric excavator comprises a first motor, a second motor, a load-sensitive valve, a pressure sensor and a vehicle control unit; the first motor is configured to drive a turning device of the electric excavator; the second motor is configured to drive a hydraulic pump so as to provide hydraulic oil for a plurality of action execution elements of the electric excavator; the load-sensitive valve is in communication between the hydraulic pump and the action execution elements and can adjust the oil supply pressure and flow according to the pressure and flow requirements of the action execution elements; the pressure sensor is configured to measure the pressure of a load-sensitive oil port of the load-sensitive valve; and the vehicle control unit is in communication connection with the pressure sensor and is configured to enable the first motor to selectively work in a single actionmode or a composite action mode according to a pressure measurement value of the pressure sensor. According to the embodiment of the compound drive system and control method of the electric excavator, the driving requirements of the electric excavator in the single action mode and the composite action mode can be considered, the coordination among actions of the electric excavator is improved, and then the controllability and the working efficiency of the electric excavator are improved.

Description

technical field [0001] The present disclosure relates to the field of engineering machinery, in particular to a compound drive system and a control method of an electric excavator. Background technique [0002] All the actions of the traditional diesel-powered excavator are driven by hydraulic oil. When excavating and unloading, the excavator needs to use action actuators, such as the action of the boom, arm, bucket, and bulldozer, and excavation Compound operation of machine turning action. [0003] However, limited by the power of the engine, when the power of the hydraulic pump is constant, it is easy to have insufficient flow when performing compound actions, which makes the overall work efficiency of the excavator low, and various actions cannot be taken into account. Therefore, users often complain about handling problems. Contents of the invention [0004] In view of this, the embodiments of the present disclosure provide a compound driving system and control metho...

Claims

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Application Information

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IPC IPC(8): E02F9/20E02F9/22
CPCE02F9/20E02F9/2004E02F9/2058E02F9/22E02F9/2267
Inventor 耿家文刘跃吉郭会会王帅冯小靖陈超王震崔相义张真畅张飞岳苏华李金澎马立国吴锦王荣标陈钦法
Owner XCMG EXCAVATOR MACHINERY
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