Variable stiffness anti-shock support system for heavy duty gearboxes

By using a variable stiffness impact-resistant support system and a servo motor to adjust the stiffness and damping force of the shock absorption device, the energy transmission problem of traditional heavy-duty gearboxes under impact loads is solved, achieving efficient impact energy absorption and stability assurance.

CN122407766APending Publication Date: 2026-07-17QINGDAO UNIV OF TECH
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Patent Information

Application Number
CN202610488865.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-14
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

When faced with instantaneous impact loads, the support structure of traditional heavy-duty gearboxes transmits the impact loads to the core components with almost no attenuation, leading to fatigue damage to vulnerable parts and an inability to buffer continuous vibrations, posing a risk of resonance.

Method used

A variable stiffness impact-resistant support system is adopted, which uses a servo motor to drive the gear disk to rotate, adjusts the pre-compression of the damping spring and the damping force of the damper, and achieves adaptive stiffness adjustment. It also absorbs impact energy through a multi-stage energy consumption mechanism, including elastic deformation, damping fluid flow and lateral buffering.

Benefits of technology

It effectively dissipates impact energy, avoids wear and bearing failure caused by excessive displacement of the gearbox, ensures operational stability and service life, and achieves a dynamic balance of load-bearing and buffering effect.

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Abstract

本发明涉及重载齿轮箱技术领域,公开了重载齿轮箱的变刚度抗冲击支撑系统,包括基座和底座,底座的底部固定式连接有两个上铰接座,上铰接座的底部铰接式连接有减震装置,减震装置的下部螺纹式连接有齿轮,移动台活动式连接在基座的底部,伺服电机的底部固定式连接有转轴,转轴的底部固定式连接有齿轮盘,齿轮的一端与齿轮盘的一侧啮合式连接,若冲击载荷较大时,系统通过预设在齿轮箱上的传感器反馈冲击强度,伺服电机快速响应,驱动齿轮盘转动,齿轮推动阻尼器向上移动,进一步压缩减震弹簧,增大弹簧刚度,同时阻尼器内阻尼液流动阻力增大,阻尼力提升,快速消耗冲击能量,避免齿轮箱因过度位移导致齿面磨损、轴承失效等故障。
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Citation Information

Patent Citations

  • A heavy-duty gearbox

    CN218845047U