Three-point enveloping clamping full-size sleeve dismounting device and method

The three-point envelope clamping sleeve assembly and disassembly device uses a clamping hydraulic motor and synchronous rack drive for three-point envelope contact clamping, combined with the precise alignment of the transverse trolley and the centering saddle, which solves the problems of low efficiency, poor equipment versatility and safety risks of the existing sleeve assembly and disassembly methods, and realizes efficient, automated and multi-specification flexible sleeve assembly and disassembly in high-speed rolling production lines.

CN121447413BActive Publication Date: 2026-07-24CHINA NAT HEAVY MACHINERY RES INSTCO
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA NAT HEAVY MACHINERY RES INSTCO
Filing Date
2025-12-05
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing sleeve assembly and disassembly methods are inefficient, have poor equipment versatility, are complex to operate, and pose safety risks, making it difficult to meet the high-efficiency, automated, and multi-specification flexibility requirements of high-speed rolling production lines.

Method used

The device employs a three-point enveloping clamping full-size sleeve assembly and disassembly mechanism, which includes a clamping swing mechanism, an axial conveying mechanism, a sleeve centering mechanism, and a sleeve supply mechanism. It utilizes a clamping hydraulic motor and a synchronous rack to drive the gripper arm to open and close, achieving three-point enveloping contact clamping. The device also generates radial clamping force through hydraulic system pressurization. Combined with the precise centering of the traverse trolley and the centering saddle, it achieves automated assembly and disassembly of the sleeve.

Benefits of technology

It automates and improves the efficiency of sleeve assembly and disassembly, shortens non-production time, increases production cycle time, reduces safety risks, adapts to rapid switching of multiple sleeve specifications, and meets the needs of high-speed rolling production lines.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present application relates to the technical field of plate strip rolling production, in particular to a three-point envelope clamping type full-size sleeve dismounting device and dismounting method, which adopts an asymmetric structure of "left floating gripper + right active rigid gripper arm", and two nylon pad plates on the floating gripper and one nylon pad plate on the right clamping arm are in contact with the sleeve to form stable three-point envelope contact; the +25° floating capability of the left floating gripper can automatically compensate for the outer circle roundness deviation of the sleeve caused by manufacturing, wear or lifting deformation, ensure uniform distribution of clamping force, avoid local stress damage to the sleeve, and the right active rigid gripper arm provides a stable positioning reference to ensure that the sleeve has a certain relative position between the manipulator in the clamping state; the functions of each mechanism of the present application are specific, the structure is clear, fault diagnosis and maintenance are more convenient, the device can be optimally arranged according to the site space and is not limited by the upper and lower coil car tracks.
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Citation Information

Patent Citations

  • New mechanical arm for dismounting sleeve from strip cold mill

    CN101391418A

  • Oil cylinder disassembling and assembling machine

    CN108673104A