A hydraulic auxiliary system for excavator multifunctional implements

Abstract

The invention discloses a hydraulic auxiliary system for excavator multifunctional equipment, which comprises a main control valve, an electromagnetic proportional pressure reducing valve group, an electromagnetic reversing valve, a foot valve, a hydraulic control reversing valve, a shuttle valve, an electric switch, and a pressure switch , electrical switch group, hydraulic oil tank and filter. On the basis of the one-way hydraulic system for special machines and tools, the present invention achieves that the system simultaneously satisfies the requirements of the system by adding hydraulically controlled reversing valves, electromagnetic reversing valves, pressure switches, electrical switch groups, shuttle valves and electromagnetic proportional pressure reducing valve groups. Special implement system with one-way function and two-way function. In actual use, it only needs to replace special tools to realize multiple functions of the excavator without adding hydraulic pipelines. The invention not only is simple and reliable in the actual operation process, and reduces the cost, but also has great significance for the development of the excavator's multifunctional implement.

Description

technical field [0001] The invention relates to a hydraulic auxiliary system for multi-functional machines and tools of an excavator, in particular to a hydraulic system with multiple functions of special machines and tools, and belongs to the technical field of excavators. Background technique [0002] In the current excavator market, especially in the European and American high-end markets, more and more excavators are used in various working conditions, which requires the installation of special tools on traditional excavators. It can realize a single function, and it is impossible to make multiple special machines share one main valve oil port and pipeline. To realize the excavator with multiple special machine functions, it is necessary to connect an external reversing valve. This is because the existing excavator Only one spare spool is reserved for the main control valve, and different implements often have their own independent hydraulic pipelines, which will cause p...

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Problems solved by technology

[0002] In the current excavator market, especially in the European and American high-end markets, more and more excavators are used in various working conditions, which requires the installation of special tools on traditional excavators. It can realize a single function, and it is impossible to make multiple special machines share one main valve oil port and pipeline. To realize the excavator with multiple special machine functions, it is necessary to connect an external reversing valve. This is because the existing excavator Only one spare spool is reserved for the main control valve, and different implements often have their own independent hydraulic pipelines, which will cause problems such as complicated pipelines, difficult layout, and increased costs; and due to the limited space of excavator pipelines However, the existing multi-function machine tool system often can only realize two different special machine tool functions, and cannot realize the purpose of multiple functions on one excavator

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