一种四辊轧机的弯串辊液压缸更换装置
By designing a replacement device for the hydraulic cylinders of the bending roll assembly, including the pulley, lifting frame, and transfer plate, the operational difficulties of the hydraulic cylinders of the bending rolls during the disassembly and installation of the rolling mill were solved, enabling fast, stable, and convenient replacement and improving maintenance efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WISDRI ENG & RES INC LTD
- Filing Date
- 2025-07-17
- Publication Date
- 2026-07-17
AI Technical Summary
The bending roller hydraulic cylinder presents problems of difficult operation, low efficiency and high risk during the disassembly and installation of the rolling mill, especially in high temperature and high load environments where it is difficult to install and disassemble stably.
A device for changing hydraulic cylinders of curved rollers was designed, comprising a trolley, a lifting frame assembly, a slide block, and an adapter plate assembly. The trolley moves on the slide block, the lifting frame assembly is raised and lowered, and the adapter plate assembly enables the rapid and stable replacement of hydraulic cylinders of curved rollers.
It enables rapid, stable, and convenient replacement of hydraulic cylinders for bending rollers, reducing operational difficulty, improving maintenance efficiency, and saving manpower.
Smart Images
Figure CN224508025U_ABST
Abstract
Claims
1. A hydraulic cylinder replacement device for bending rolls in a four-roll mill, characterized in that: It includes a trolley, a lifting frame assembly, a slide that can move back and forth on the roll changing guide, and an adapter plate assembly for detachable connection to the hydraulic cylinder of the bending roll. The trolley is movably mounted on the slide block to ensure that the trolley can move back and forth between the inlet and outlet sides of the slide block; the lifting frame assembly is liftably mounted on the trolley and is used to hook the adapter plate assembly.
2. The bending roll hydraulic cylinder replacement device of a four-high rolling mill according to claim 1, characterized in that: The slide block is provided with a mounting groove that matches the trolley. The two opposite groove walls of the mounting groove are respectively provided with track grooves, and the trolley is movably mounted in the track grooves.
3. The bending roll hydraulic cylinder changing device of a four-high rolling mill according to claim 2, characterized in that: The slide block is equipped with a wear-resistant plate, which is used to ensure that the slide block slides smoothly on the roller changing guide rail.
4. The bending roll hydraulic cylinder replacement device of a four-high rolling mill according to claim 2, characterized in that: The outer wall of the slide is provided with a connecting pin for connecting to the pin hole of the roller changing trolley.
5. The bending roll hydraulic cylinder changing device of a four-high rolling mill according to claim 1, characterized in that: The trolley, the lifting frame assembly, and the slide are each equipped with lifting lugs.
6. The bending roll hydraulic cylinder replacement device of a four-high rolling mill according to any one of claims 1 to 5, characterized in that: The trolley includes a trolley frame, a detachable top seat mounted on the top of the trolley frame, and a first support wheel assembly mounted on the bottom of the trolley frame; the first support wheel assembly is movably mounted in the track groove; a second support wheel assembly is provided on the opposite inner wall of the trolley frame to ensure the stability of the lifting frame assembly moving up and down within the trolley frame.
7. The bending roll hydraulic cylinder changing device of a four-high rolling mill according to claim 6, characterized in that: The lifting frame assembly includes a hook and a liftable lifting frame. The hook is mounted on the lifting frame to hook the adapter plate assembly. The opposite outer walls of the lifting frame are respectively provided with guide rail grooves extending upward and downward, and the second support wheel set is movably mounted on the guide rail grooves.
8. The bending roll hydraulic cylinder replacement device of a four-high rolling mill according to claim 7, characterized in that: The lifting frame has a through hole at the top center away from the slide block for the chain of the hand chain hoist to pass through; the inner wall of the lifting frame is provided with centrally symmetrically distributed limiting blocks near the bottom of the slide block to limit the lateral movement of the adapter plate assembly.
9. The bending roll hydraulic cylinder changing device of a four-high rolling mill according to claim 8, characterized in that: The adapter plate assembly includes an adapter plate, a first pad, a second pad, a third pad, and disassembly screws for fastening the adapter plate to the bending roller hydraulic cylinder. The adapter plate has multiple process holes. The first pad and the second pad are respectively located at the upper and lower ends of one side of the adapter plate, and the third pad is located on the other side of the adapter plate. The first pad and the hook cooperate to ensure that the adapter plate is hung on the lifting frame. The second pad and the limiting block cooperate to restrict the lateral movement of the adapter plate. The third pad has a boss for supporting the bending roller hydraulic cylinder. The first pad, the second pad, and the third pad are installed in multiple positions through the process holes to adapt to the corresponding side replacement requirements of the hydraulic cylinder.