一种基于轴向制动的贝壳抓斗稳定装置
By combining disc springs and friction brake pads, the axial sway of the clamshell grab is limited, solving the problem of grab instability, improving operational accuracy and safety, and extending equipment life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 潍柴(青岛)智慧重工有限公司
- Filing Date
- 2025-08-06
- Publication Date
- 2026-07-17
AI Technical Summary
Existing clamshell grabs are susceptible to load changes and excavator rotation after grabbing materials, resulting in swaying, rotation, or unstable posture, which affects operating accuracy, equipment life and operational safety.
The axial freedom of the clamshell grab is restricted by the compression force provided by the disc spring preload and the force of the friction brake pads through the double-threaded shaft. Combined with the threaded retaining ring to control the preload, it prevents lateral slippage and improves stability and safety.
It effectively prevents uniaxial swaying of the clamshell grab, improves stability and safety, reduces equipment wear and maintenance costs, and ensures operator safety.
Smart Images
Figure CN224513036U_ABST
Abstract
Claims
1. A clamshell grab stabilizing device based on axial braking, comprising a pin, a hanger at the lower end of the pin, and an upper turntable at the lower end of the hanger, characterized in that, The hanger and the upper turntable are connected by a double-threaded shaft. Adjusting shims are provided at both ends of the double-threaded shaft. A friction brake pad is provided at one end of the adjusting shim. A disc spring is provided at one end of the friction brake pad. A threaded retaining ring is provided at one end of the disc spring.
2. A shell grab bucket stabilizing device based on axial braking as claimed in claim 1, characterized in that, The double-threaded shaft passes through the hanger and the upper turntable, and is movably connected to the hanger and the upper turntable.
3. A shell grab bucket stabilizing device based on axial braking as claimed in claim 1, characterized in that, The end of the double-threaded shaft is provided with an external thread, and the threaded retaining ring is provided with an internal thread. The double-threaded shaft and the threaded retaining ring are threadedly connected.
4. An axial braking based shell grab bucket stabilizing device as claimed in claim 1, wherein, The adjusting shims, friction brake pads, and disc springs are all sleeved on the double-threaded shaft and are detachably connected to the double-threaded shaft.
5. An axial braking based shell grab bucket stabilizing device as claimed in claim 1, wherein, One end of the adjusting shim is in close contact with the upper turntable, and the other end of the adjusting shim is in close contact with one end of the friction brake pad.
6. The clamshell grab stabilizing device based on axial braking as described in claim 5, characterized in that, The other end of the friction brake pad is in close contact with one end of the disc spring.
7. An axial braking based conch shell grab stabilizing device as claimed in claim 6, wherein, The other end of the disc spring is in close contact with one end of the threaded retaining ring.
8. An axial braking based shell grab bucket stabilizing device as claimed in claim 1, wherein, A frame is provided at the lower end of the upper turntable, and hydraulic cylinders are provided at both ends of the frame.
9. An axial braking based conch shell grab stabilizing device as claimed in claim 8, wherein, The upper end of the hydraulic cylinder is provided with a hydraulic cylinder pin, through which the hydraulic cylinder and the frame are movably connected.
10. An axial braking based conch shell grab stabilizing device as claimed in claim 9, wherein, The lower part of the frame is provided with a shell hopper, which is connected to the frame by a pin; the output end of the hydraulic cylinder is connected to the shell hopper by a pin.