Excavator boom energy regenerating device and boom energy regenerating valve block thereof

Abstract

The invention discloses an excavator boom energy regenerating device and a boom energy regenerating valve block of the excavator boom energy regenerating device, relating to the technical field of the excavator. The excavator boom energy regenerating device comprises a power oil path, a pilot oil path, a loading oil path, a boom energy regenerating valve block and an oil return oil path, wherein, the operating speed of the boom is identified by the boom energy regenerating valve block through pilot pressure change of the pilot oil path; when the pilot pressure reaches the first preset value, hydraulic oil, flowing out from the fourth oil hole and in the boom oil cylinder small cavity is controlled to flow into the boom oil cylinder large cavity between the power oil path and the loading oil path through a first oil hole, so as to achieve regenerating function. With the adoption of the excavator boom energy regenerating device and the boom energy regenerating valve block of the excavator boom energy regenerating device, the boom operating speed is identified by the excavator boom energy regenerating device according to the pilot pressure change, the boom energy regenerating function is activated after the pilot pressure reaches the preset value, and the hydraulic oil in the regenerating boom oil cylinder small city is regenerated, so that the energy consumption of the excavator is reduced and the operating efficiency of the excavator is improved.

Description

technical field [0001] The invention relates to the technical field of excavators, in particular to an excavator boom energy regeneration device and a boom energy regeneration valve group thereof. Background technique [0002] As an efficient earth-rock construction machine, hydraulic excavators occupy an important position in the construction machinery industry. The hydraulic multi-way valve is the core of the excavator, and its performance directly affects the performance and quality of the excavator. [0003] Excavators currently on the market do not have boom energy regeneration function, the lack of boom energy regeneration function, so that a part of the excavator boom operation cycle can be recovered and the energy is wasted in the form of overflow, which increases the heat dissipation system The load reduces the service life of the hydraulic multi-way valve, resulting in high energy consumption and low efficiency of the excavator. [0004] However, many countries i...

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Problems solved by technology

[0005] The technical problem to be solved by the embodiments of the present invention is to provide an excavator arm energy regeneration device and its arm energy regeneration valve group to solve the problems of high energy consumption and low efficiency of the excavator

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