Multi-working-condition automatic speed regulation control system of electric loader

A technology of automatic speed regulation and control system, which is applied in the direction of control drive, control device, electric vehicle, etc. It can solve the problems of electric loader speed limit, high energy consumption, poor driver experience, etc., to extend the charging interval and ensure operation safety. Effect

Active Publication Date: 2022-01-11
XCMG CONSTR MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a multi-working-condition automatic speed regulation control system for the electric loader to solve the problem of not limiting the speed of the electric loader under different working conditions in the prior art. Technical problems such as high energy consumption and poor driver experience

Method used

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  • Multi-working-condition automatic speed regulation control system of electric loader
  • Multi-working-condition automatic speed regulation control system of electric loader

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The rocker switch 10 is in the manual mode, which is the default mode of the loader. The driver can manually turn on the shift function according to his own functional requirements, specifically:

[0045] Rotate the rotary switch 11 to the gear corresponding to the low-speed driving of the loader. After the determination of the control strategy, the VCU control unit 12 outputs the speed limit execution parameter corresponding to the gear, and transmits it to the motor controller 13 through CAN communication. At the same time, the motor The controller 13 reads the speed of the travel motor 14, compares the current speed with the set value of the gear, and controls the output torque of the travel motor 14 so that the travel motor 14 maintains the maximum speed limit of the gear. Similarly, the rotary switch 11 is rotated to the loader The high-speed or medium-speed gear can realize the high-speed or medium-speed driving of the loader.

[0046] The high-speed driving gear ...

Embodiment 2

[0048] The rocker switch 10 is in the automatic mode, which sets the pressure threshold of the pump port of the working pump 1 when the working tool is not in action, and sets the pressure threshold of the large cavity of the boom cylinder 6 when the loader tool is lifted at the highest position without load; automatically The speed regulation specifically includes the following steps: (1) When the pressure value detected by the first pressure sensor 8 is greater than the pressure threshold of the pump port of the working pump 1, the VCU control unit 12 judges that the loader is in the shoveling condition, and controls the speed of the loader Do not exceed the maximum speed in the low drive gear;

[0049] That is, when the boom cylinder 6 or the bucket cylinder 7 is in a moving state, the multi-way valve spool I 3 or the multi-way valve spool II4 is in the working position under the promotion of the pilot oil. At this time, the high-pressure oil of the working pump 1 passes thr...

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Abstract

The invention discloses a multi-working-condition automatic speed regulation control system of an electric loader, which comprises a detection module, the detection module comprises a first pressure sensor and a second pressure sensor, the first pressure sensor is arranged in a pump opening oil way of a working pump of a hydraulic system and used for detecting the pressure value of the working pump during shovel loading operation of the loader, the second pressure sensor is connected in an oil way of a large cavity of a movable arm oil cylinder of the hydraulic system and is used for detecting the pressure value of the large cavity of the movable arm oil cylinder when the working machine tool of the loading machine ascends or descends; a control module which comprises a VCU control unit which is used for controlling the motion state of the loading machine and electrically connected with the first pressure sensor and the second pressure sensor, and the VCU control unit is used for controlling the motion of the loading machine according to detection data of the first pressure sensor and the second pressure sensor. Speed requirements for different working conditions of shoveling operation and walking can be guaranteed, operation safety in the operation process is guaranteed, meanwhile, energy can be properly saved, consumption can be properly reduced, and the single-time charging interval is prolonged.

Description

technical field [0001] The invention relates to a multi-working-condition automatic speed regulation control system for an electric loader, which belongs to the technical field of loaders. Background technique [0002] In response to low-carbon environmental protection policies and emission requirements in key areas, new energy vehicles are not limited to passenger vehicles. Many construction machinery OEMs have completed the research and development and trial production of new energy models. Here we will focus on shovel loading machinery—— electric loader. Due to the scheme structure of the electric installation, the traditional gearbox is canceled during the operation of the whole vehicle, and the speed is adjusted without gear switching. The output torque of the motor is adjusted through the accelerator pedal to realize the change of the vehicle speed. The disadvantages are: [0003] 1. Excessive speed during the shovel loading process brings certain safety hazards. At t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L15/20B60L15/28
CPCB60L15/20B60L15/28B60L2200/40B60L2240/423Y02T10/72
Inventor 邱楚然董雯雯侯璐张宁江云鹤孙志远
Owner XCMG CONSTR MACHINERY
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