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Excavator hydraulic system

A hydraulic system and excavator technology, applied in mechanically driven excavators/dredgers, earth movers/shovels, construction, etc., can solve problems such as work efficiency and driving comfort constraints, and improve efficiency and comfort. Effect

Pending Publication Date: 2021-04-16
恒岳重工有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This has great restrictions on work efficiency and driving comfort.

Method used

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  • Excavator hydraulic system
  • Excavator hydraulic system

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Embodiment Construction

[0012] like figure 1 , figure 2 As shown, the excavator hydraulic system of the present invention includes a boom cylinder 3, a bucket cylinder 4, a stick cylinder 5, a swing motor 6, and a boom control main valve 8 connected with the boom cylinder 3 for controlling the boom cylinder 3 , the bucket control main valve 9 connected with the bucket oil cylinder 4 for controlling the bucket oil cylinder 4, the arm control main valve 10 connected with the arm cylinder 5 for controlling the arm cylinder 5, and connected with the swing motor 6 for Control the rotation control main valve 11 of the slewing motor 6, the joystick 13 connected to the pilot hydraulic control ends at both ends of the above-mentioned control main valves, and the oil pumping system connected to the above-mentioned each control main valves, the oil pumping system includes plunger variables Pump 15, pilot oil pump 7 and hydraulic oil tank 14, the boom control main valve 8, bucket control main valve 9, stick co...

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Abstract

The invention provides an excavator hydraulic system for the situation that an existing excavator has high requirements for operability of a driver and is low in working efficiency under different working conditions; the operation difficulty of the driver is lowered, and the production efficiency is improved; a large arm control main valve, a bucket control main valve, a bucket rod control main valve and a rotation control main valve are all arranged on a working oil way of a plunger variable pump in parallel, and a pilot oil pump is connected with pilot hydraulic control ends at the two ends of each control main valve through control handles; proportional electromagnetic valves are arranged on oil ways between the pilot hydraulic control ends at the two ends of each control main valve and the control handles, and oil inlet ways and oil outlet ways of the proportional electromagnetic valves communicate with the pilot hydraulic control ends of the control main valves and working oil ports of the control handles separately; pilot electric control ends of the proportional electromagnetic valves are connected with controllers; one ends of the controllers are connected to the pilot electric control ends of the proportional electromagnetic valves, and the other ends of the controllers are connected to a human-computer interface; and the human-computer interface is used for operating the controllers and setting parameters.

Description

technical field [0001] The hydraulic system of an excavator of the invention belongs to the technical field of excavators. Background technique [0002] An excavator is a construction machine for excavating soil. The overall structure includes a working device, a walking structure, a slewing mechanism, and an operating mechanism. Among them, the working device can be subdivided into boom, stick, bucket and other structures. During general construction, various working conditions are accomplished by directly manipulating the hydraulic pilot handle to control the boom, stick, and bucket. [0003] The working conditions of excavators generally include flat ground conditions, earthwork loading conditions, and slope brushing and grooving conditions. Under each working condition, the speed of the boom, arm and bucket is different, which requires the driver to have enough experience to deal with different working conditions. The driver often needs to repeat a certain action conti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02F3/42E02F9/22E02F9/20
Inventor 赵宇昊邸升彭玮刘尧强
Owner 恒岳重工有限责任公司