Buffer structure of miniature excavator: Fid-Bau Portal

Buffer structure of miniature excavator

DU JINJIANG

The invention discloses a buffering structure of a miniature excavator, and relates to the technical field of miniature excavators. The buffering structure comprises a belleville spring, a flat key, a push rod and a lead screw pair. According to the buffering structure, the impact force generated at the excavator bucket is transmitted to the push rod through the electric cylinder supporting lug and then transmitted to the lead screw pair through the push rod, the impact force of a traditional structure is borne by the lead screw pair, and the impact force borne by the original lead screw pair is weakened due to the fact that the belleville spring is high in buffering and vibration absorption capacity. The advantages that the belleville spring is large in rigidity and high in buffering and vibration absorbing capacity are fully exerted, then the lead screw pair longer in service life is obtained, the service life of the lead screw pair additionally provided with the buffering structure can be greatly prolonged, and the defect that the service life of a traditional lead screw pair is greatly shortened when the traditional lead screw pair bears impact is overcome. The transmission structure using the structure has a very wide application prospect.

本发明公开了一种微型挖掘机的缓冲结构，涉及微型挖掘机技术领域。所述缓冲结构，包括：碟形弹簧、平键、推杆和丝杠副。本发明的缓冲结构：由挖机铲斗处产生的冲击力经电动缸支耳传递至推杆，再由推杆传递至丝杠副，其传统结构的冲击力均由丝杠副承受，现结构因碟形弹簧其缓冲吸振能力强的优点弱化原有丝杠副应承受的冲击。充分发挥碟形弹簧刚度大，缓冲吸振能力强的优点，进而得到寿命更久的丝杠副，能够使加入缓冲结构的丝杠副大幅增加其使用寿命，克服了传统丝杠副承受冲击时寿命大幅降低的缺点。使用该结构的传动结构具有十分广阔的应用前景。

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