Pure-hydraulic electric loader

Abstract

The invention discloses a pure-hydraulic electric loader, comprising a motor module, a hydraulic pump, a pump transfer gear box, a motor transfer gear box and a hydraulic motor module, wherein the motor module is connected with the hydraulic pump; the motor module is formed by one or more motors and is used for outputting power to the hydraulic pump; the hydraulic pump drives the hydraulic motor module through a distributing valve; the hydraulic motor module is fixedly arranged on the motor transfer gear box; an output shaft of the motor transfer gear box is connected with front and back drive axles of the pure-hydraulic electric loader and is used for driving the pure-hydraulic electric loader to walk; and steering, swing arm lifting and bucket movement are realized by oil supply of the distributing valve. The pure-hydraulic electric loader disclosed by the invention adopts pure hydraulic pressure to carry out piloted control, and has the advantages of simple structure and convenience for operation. The motor is used as power to replace an internal-combustion engine, so that the maintenance cost can be greatly reduced; and a hydraulic motor is adopted to drive and the power is stably output; and the working efficiency is far higher than mechanical transmission work efficiency and the pure-hydraulic electric loader is energy-saving and environment-friendly.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a pure hydraulic electric loader. Background technique [0002] Hydraulic pressure is a device that transmits pressure through hydraulic oil (depending on the actual situation). Compared with mechanical transmission and electric transmission, hydraulic transmission has the advantages of light weight, small size, small motion inertia, fast response, and convenient operation and control. [0003] Because hydraulic transmission has many advantages such as stable transmission, light weight, small size, large carrying capacity, and easy stepless speed regulation, crawler loaders (forklifts), tunnel boring machines and other large-scale construction machinery and equipment mostly use hydraulic transmission. However, the power transmission mode of the wheel loader (forklift) is still realized through the clutch, transmission, transmission shaft and drive axle, as described in "A Po...

AI Technical Summary

Problems solved by technology

However, the power transmission mode of the wheel loader (forklift) is still realized through the clutch, transmission, transmission shaft and drive axle, as described in "A Power Transmission Device for Pure Electric Loaders (Application No.: 201110278118.7)" Although the device realizes the transmission device powered by an electric motor or a battery pack instead of an internal combustion engine, it has not fundamentally changed the original mechanical transmission principle, nor has it fully utilized the advantages of hydraulic transmission.

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