Guide device for piston rod of fin rotating oil cylinder of fin stabilizer
By designing a guiding device with a vertical guide rod and a guide slider, the problem of fin angle indication deviation caused by the rotation of the piston rod of the anti-roll fin cylinder was solved, achieving accurate guidance and easy assembly, and improving accuracy and indication reliability.
Patent Information
- Application Number
- CN202423225254.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2034-12-26
AI Technical Summary
The existing anti-roll fin cylinder piston rod rotates, causing the fin angle indication to deviate, resulting in fin retraction failure. It is also inconvenient to assemble and lacks precision.
Design a guiding device including a vertical guide rod, a guide slider, and a piston rod of a rotary fin cylinder. The vertical guide rod is fixed to the rotary fin cylinder body by hexagonal bolts, and the guide slider slides along the guide groove of the vertical guide rod to ensure accurate guidance of the piston rod.
It achieves accurate guidance, is easy to assemble, improves precision, ensures reliable fin angle indication, and avoids fin retraction failure.
Smart Images
Figure CN223644944U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the application of preventing rotation of marine hydraulic cylinders, and in particular to a piston rod guide device for a fin-stabilizing and fin-rotating cylinder. Background Technology
[0002] Currently, the anti-roll fins on the new training ship are retractable anti-roll fins. After one deployment, the anti-roll fins experienced difficulty in retracting. An inspection revealed that the fin angle indicator inside the cabin was at zero. Underwater inspection showed that the anti-roll fin blades were clearly not at zero. After manually adjusting the underwater fin angle to zero, the fins were retracted. After the ship entered the dock, the fin blades were deployed. The fin-turning cylinder was disassembled, and it was found that the piston rod of the fin-turning cylinder rotated with the bottom cross connecting block, causing the fin angle indicator to deviate, which in turn led to the failure of fin retraction. Utility Model Content
[0003] The purpose of this invention is to provide a guide device for the piston rod of a fin-stabilizing hydraulic cylinder that offers accurate guidance, ease of assembly, improved precision, and reliable indication.
[0004] The technical solution adopted by this utility model to achieve the above-mentioned objective is: a piston rod guide device for a fin-reducing rotating cylinder, including a vertical guide rod (1), a guide slider (2), a piston rod (3) of a rotating cylinder and a cylinder body (5). The vertical guide rod (1) is fixed on the upper end face of the cylinder body (5). One end of the guide slider (2) is installed on the flat surface of the upper end of the piston rod (3) of the rotating cylinder, and the other end is connected to the guide groove of the vertical guide rod (1). The guide slider (2) can slide up and down along the guide groove of the vertical guide rod (1).
[0005] The vertical guide rod (1) is fixed to the upper end face of the rotating fin cylinder body (5) by hexagonal bolts (4).
[0006] One end of the guide slider (2) is installed on the flat surface of the upper end of the piston rod (3) of the rotating fin cylinder, and is fixed by the connecting thread of the piston rod (3).
[0007] This utility model provides a guide device for the piston rod of a fin-stabilizing cylinder, which avoids deviation in the length of the fin angle indicator rod caused by the internal rotation of the piston rod of the fin-stabilizing cylinder, thus preventing fin angle indication deviation and fin retraction failure; it provides accurate guidance, is easy to assemble, improves precision, and ensures reliable indication. Attached Figure Description
[0008] Figure 1 This is a schematic diagram of the overall structure of a piston rod guide device for a rock-damping fin rotary fin cylinder according to this utility model.
[0009] In the diagram: 1. Vertical guide rod; 2. Guide slider; 3. Rotary fin cylinder piston rod; 4. Hex bolt; 5. Rotary fin cylinder body. Detailed Implementation
[0010] like Figure 1 As shown, the anti-roll fin rotating cylinder piston rod guide device includes a vertical guide rod 1, a guide slider 2, a rotating cylinder piston rod 3, and a rotating cylinder body 5. The vertical guide rod 1 is fixed to the upper end face of the rotating cylinder body 5 by hexagonal bolts 4. One end of the guide slider 2 is installed on the upper flat surface of the rotating cylinder piston rod 3 and fixed by the rotating cylinder piston rod 3 through a connecting thread. The other end is connected to the guide groove of the vertical guide rod 1. The guide slider 2 can slide up and down along the guide groove of the vertical guide rod 1. The anti-roll fin rotating cylinder piston rod guide device of this utility model provides accurate guidance and is easy to assemble in application; it improves precision and provides reliable indication; it avoids the deviation of the fin angle indicator rod length caused by the internal rotation of the anti-roll fin rotating cylinder piston rod, which leads to fin angle indication deviation and fin retraction failure.
Claims
1. A piston rod guide device for a fin-stabilizing hydraulic cylinder, characterized in that: It includes a vertical guide rod (1), a guide slider (2), a rotating fin cylinder piston rod (3) and a rotating fin cylinder body (5). The vertical guide rod (1) is fixed on the upper end face of the rotating fin cylinder body (5). One end of the guide slider (2) is installed on the upper flat surface of the rotating fin cylinder piston rod (3), and the other end is connected to the guide groove of the vertical guide rod (1). The guide slider (2) can slide up and down along the guide groove of the vertical guide rod (1).
2. The anti-roll fin hydraulic cylinder piston rod guide device according to claim 1, characterized in that: The vertical guide rod (1) is fixed to the upper end face of the rotating fin cylinder body (5) by hexagonal bolts (4).
3. The anti-roll fin hydraulic cylinder piston rod guide device according to claim 1, characterized in that: One end of the guide slider (2) is installed on the flat surface of the upper end of the piston rod (3) of the rotating fin cylinder, and is fixed by the connecting thread of the piston rod (3).