A socket-type hanger device for a stern tube

Abstract

The utility model discloses a socket type lifting appliance device of stern tube, including the hoist beam, the lifting ring, the hydraulic oil cylinder, the sliding block and the pin shaft, its main features are at: the groove that the sliding block slides is established below the hoist beam, the lifting ring is symmetrically arranged on the both ends of hoist beam, the hydraulic station is fixed in the center position of hoist beam top, the hydraulic oil cylinder is built -in installation in hoist beam inside, the hydraulic oil cylinder both ends symmetrically are provided with hydraulic push rod, the one end of hydraulic push rod away from hydraulic oil cylinder is connected with the sliding block, the sliding block is welded fixed with pin axle seat, the pin axle is welded fixed with pin axle seat, the pen type push rod for locking stern tube is set up in the pin axle inside, the utility model hydraulic oil cylinder drive both ends hydraulic push rod telescoping, drive the sliding block along hoist beam groove sliding, can flexible adjustment pin axle position, drive pin axle locking stern tube through the pen type push rod in the pin axle, solved the lifting appliance unable to protect stern tube side wall, easily cause damage, and difficult to adapt to different specifications stern tube hoisting problem.

Description

Technical Field

[0001] This utility model relates to the technical field of stern tube lifting devices, and in particular to a socket-type lifting device used in the assembly and fabrication of stern tubes to achieve stable lifting of stern tubes and adapt to stern tubes of various specifications. Background Technology

[0002] In the assembly and fabrication process of ship stern tubes, after the stern tubes are assembled and welded, they need to enter the machining stage. During this process, a lifting device is required to suspend the stern tube to meet the machining requirements. However, existing lifting devices have significant drawbacks: after the stern tube is suspended, its sidewalls are directly exposed to the external environment, lacking an effective protective structure. When sharp objects on site come into contact with the stern tube sidewalls, they can easily cause damage to the tube wall and outer surface, affecting not only the appearance quality of the stern tube but also potentially compromising the structural integrity of the tube wall. This can lead to deviations in subsequent machining accuracy or a decrease in the performance of the stern tube, increasing construction costs and the risk of rework. Summary of the Invention

[0003] The purpose of this utility model is to provide a socket-type lifting device for stern tubes, so as to solve the problems that existing lifting devices cannot protect the side wall of the stern tube, are prone to damage, and are difficult to adapt to the lifting of stern tubes of different specifications, so as to achieve stable and safe lifting of stern tubes, and at the same time meet the lifting needs of multiple specifications of stern tubes.

[0004] To achieve the above technical objectives and meet the above technical requirements, the technical solution adopted by this utility model is: a socket-type lifting device for a stern tube, comprising a lifting beam, lifting rings, a hydraulic cylinder, a slider, and a pin; its main features are: a groove for sliding of the slider is provided below the lifting beam; lifting rings are symmetrically arranged at both ends of the lifting beam; a hydraulic station is fixed at the center position above the lifting beam; the hydraulic cylinder is internally installed inside the lifting beam; hydraulic push rods are symmetrically arranged at both ends of the hydraulic cylinder; the end of the hydraulic push rod away from the hydraulic cylinder is connected to the slider; the slider is welded and fixed to the pin seat; the pin is welded and fixed to the pin seat; and a pen-type push rod for locking the stern tube is provided inside the pin.

[0005] Preferably, the lifting beam is made of custom-made seamless square tubing.

[0006] Preferably, the hydraulic cylinder drives the hydraulic push rods at both ends to perform telescopic movements, and during the movement of the hydraulic push rods, the slider is pushed to slide along the groove below the lifting beam.

[0007] Preferably, the slider, under the driving force transmitted by the hydraulic cylinder through the hydraulic push rod, drives the pin seat and the pin fixed to the pin seat to move synchronously along the groove below the lifting beam; the pen-type push rod can drive the pin to lock the stern tube through its own movement to prevent the stern tube from sliding during transportation.

[0008] Compared with the traditional structure, the beneficial effects of this utility model are: This invention uses a pen-type push rod inside the pin to drive the pin and lock the stern tube, preventing the stern tube from sliding during hoisting and transportation, and reducing the risk of side wall collisions caused by shaking. At the same time, the lifting beam is made of customized seamless square tube, which is high in strength and lightweight. The hydraulic station is welded and fixed to the lifting beam and moves synchronously with the lifting device, without the need for an additional power source. The overall structure of the lifting device is stable, and the hydraulic system has pressure protection and overload protection functions, further ensuring the safety of stern tube hoisting and reducing the probability of side wall damage.

[0009] The hydraulic cylinder drives the hydraulic push rods at both ends to extend and retract, causing the slider to slide along the lifting beam groove. The position of the pin can be flexibly adjusted to adapt to multiple specifications of stern tubes. There is no need to equip different specifications of stern tubes with separate lifting tools, thus reducing construction costs. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model; In the diagram: 1. Lifting beam; 2. Lifting ring; 3. Hydraulic cylinder; 4. Hydraulic station; 5. Sliding block; 6. Pin; 7. Hydraulic push rod; 8. Pin seat; 9. Pen-type push rod. Detailed Implementation

[0011] The present invention will be further described below.

[0012] See attached document Figure 1 A socket-type lifting device for a stern tube includes a lifting beam 1, lifting rings 2, a hydraulic cylinder 3, a slider 5, and a pin 6. Its main features are: a groove for sliding the slider 5 is provided below the lifting beam 1; lifting rings 2 are symmetrically arranged at both ends of the lifting beam 1; a hydraulic station 4 is fixed at the center of the upper part of the lifting beam 1; the hydraulic cylinder 3 is internally installed inside the lifting beam 1; hydraulic push rods 7 are symmetrically arranged at both ends of the hydraulic cylinder 3; the end of the hydraulic push rod 7 away from the hydraulic cylinder 3 is connected to the slider 5; the slider 5 is welded and fixed to the pin seat 8; the pin 6 is welded and fixed to the pin seat 8; and a pen-type push rod 9 for locking the stern tube is provided inside the pin 6.

[0013] In this preferred embodiment, the lifting beam 1 is made of custom-made seamless square tubing.

[0014] In this preferred embodiment, the hydraulic cylinder 3 drives the hydraulic push rods 7 at both ends to perform telescopic movements. During the movement of the hydraulic push rods 7, the slider 5 is pushed to slide along the groove below the lifting beam 1.

[0015] In this preferred embodiment, the slider 5, under the driving force transmitted by the hydraulic cylinder 3 through the hydraulic push rod 7, drives the pin seat 8 and the pin 6 fixed to the pin seat 8 to move synchronously along the groove below the lifting beam 1; the pen-type push rod 9 can drive the pin 6 to lock the stern tube through its own movement to prevent the stern tube from sliding during transportation.

[0016] In practice, the lifting rings at both ends of the lifting beam 1 are connected to the crane hooks to ensure a secure connection. The hydraulic station 4 is started, and the hydraulic cylinder 3 is controlled to drive the hydraulic push rods 7 at both ends to extend and retract, pushing the slider 5 to slide along the groove below the lifting beam 1. The spacing of the pins 6 is adjusted to match the length of the stern tube to be lifted. The two ends of the stern tube are connected to the pins 6, and the pen-type push rod 9 inside the pin 6 is started to drive the pin 6 to lock the stern tube and prevent slippage during the lifting process. The stern tube is lifted to the designated position by remotely operating the crane. During transportation, the pressure protection and overload protection functions of the hydraulic system are activated in real time to avoid accidents. After reaching the target position, the pen-type push rod 9 is reset by remote control to release the stern tube 6. Then, the position of the lifting device is adjusted by the crane to complete the unloading of the stern tube.

[0017] The above embodiments of this utility model are merely examples to clearly illustrate this utility model, and are not intended to limit the scope of protection of this utility model. All equivalent technical solutions also fall within the scope of this utility model, and the patent protection scope of this utility model should be defined by each claim.

Claims

1. A socket-type lifting device for a stern tube, comprising a lifting beam (1), lifting rings (2), a hydraulic cylinder (3), a slider (5), and a pin (6); characterized in that: a groove for sliding of the slider (5) is provided below the lifting beam (1), lifting rings (2) are symmetrically arranged at both ends of the lifting beam (1), a hydraulic station (4) is fixed at the center of the upper part of the lifting beam (1), the hydraulic cylinder (3) is internally installed inside the lifting beam (1), hydraulic push rods (7) are symmetrically arranged at both ends of the hydraulic cylinder (3), the end of the hydraulic push rod (7) away from the hydraulic cylinder (3) is connected to the slider (5), the slider (5) is welded and fixed to the pin seat (8), the pin (6) is welded and fixed to the pin seat (8), and a pen-type push rod (9) for locking the stern tube is provided inside the pin (6).

2. The socket-type lifting device for a stern tube according to claim 1, characterized in that: The suspension beam (1) is made of custom-made seamless square tubing.

3. The socket-type lifting device for a stern tube according to claim 1, characterized in that: The hydraulic cylinder (3) drives the hydraulic push rods (7) at both ends to perform telescopic movements. During the movement of the hydraulic push rods (7), the slider (5) is pushed to slide along the groove below the lifting beam (1).

4. The socket-type lifting device for a stern tube according to claim 1, characterized in that: The slider (5) drives the pin seat (8) and the pin (6) fixed to the pin seat (8) to move synchronously along the groove below the lifting beam (1) under the driving force transmitted by the hydraulic cylinder (3) through the hydraulic push rod (7); the pen-type push rod (9) can drive the pin (6) to lock the stern tube through its own movement to prevent the stern tube from sliding during transportation.

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