A crushing device

By setting a block limit and an adjustment part in the pivot seat to adjust the support height, the torque problem of the excavator during bending action and the maintenance difficulty of the pivot shaft are solved, and a more stable and convenient excavator structural design is achieved.

CN119145494BActive Publication Date: 2025-09-05CHINA RAILWAY NO 5 ENGINEERING GROUP CO LTD GUIZHOU SUBSIDIARY +1
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Patent Information

Application Number
CN202411559323.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-11-04
Publication Date
2025-09-05
Estimated Expiration
2044-11-04

AI Technical Summary

Technical Problem

Existing excavators generate large torque when the arm performs bending movements, which increases the load on components and reduces stability and service life; the pivot shaft wears out and is difficult to maintain; and the digging angle requirements vary under different working conditions, making switching inconvenient.

Method used

A stop block is set in the pivot seat to limit the position, disperse the torque and improve stability; the pivot seat is lifted to facilitate disassembly and assembly, and the cylinder support height is adjusted through the adjustment part to adapt to different working conditions.

Benefits of technology

The stability and service life of the excavator are improved, the disassembly and assembly process of the pivot seat is simplified, and the flexibility and adaptability of the structure are enhanced.

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Abstract

A crushing device, the third arm of which includes an air spring, a connecting frame, a shell, an upper pull-up bracket, a vibration box, a hydraulic motor, a lower pull-down bracket, and a driving mechanism; the transmission rod is connected to the shell through the connecting frame, and the shell is provided with an upper pull-up bracket, a vibration box, a hydraulic motor, a lower pull-down bracket, and a transmission mechanism; an air spring is provided between the vibration box and the inner wall of the shell, the upper end of the vibration box is connected to the upper pull-up bracket, and the lower end of the vibration box is connected to the lower pull-down bracket; a hydraulic motor is provided on the vibration box, and a driving mechanism is provided inside the vibration box; the driving mechanism includes a driving helical gear, a driven helical gear, and an eccentric block; the hydraulic motor drives the driving helical gear to rotate, and the driving helical gear drives the driven helical gear to rotate, and an eccentric block is provided on the driven helical gear.
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