Opening pulley for ship

Abstract

The utility model relates to the technical field of ship equipment, in particular to an open pulley for a ship. The open pulley for the ship comprises a stainless steel frame body and a pulley body, the whole frame body is of a C-shaped structure, and the pulley body is connected to the lower portion in the frame body through a first fixing shaft. Protection plates matched with the pulley body are arranged on the two sides, located on the pulley body, of the frame body, and an opening for a cable to enter and exit is formed in the position, located between the C-shaped structure and the protection plates, of the frame body; one end of the first fixing shaft is of a rectangular structure, and the other end is fixed through nut threads. A hanging ring is fixed to the top of the frame body. According to the open pulley, the C-shaped frame body and the open design are adopted, a cable can laterally and rapidly enter the pulley, the operation efficiency is improved, the guide plate is additionally arranged, the cable can smoothly enter the pulley, abrasion is reduced, meanwhile, the limiting plate and the torsion spring are arranged at the opening, the opening can be automatically closed, and the cable is prevented from accidentally disengaging.

Description

Technical Field

[0001] This utility model relates to the field of marine equipment technology, specifically to an open pulley for ships. Background Technology

[0002] Marine pulleys are common cable guiding devices, primarily used in ship mooring, cargo loading and unloading, and towing operations. Their function is to change the direction of force on the cable, reduce friction between the cable and the ship's structure, extend the cable's lifespan, and ensure the safety and stability of the operation. Traditional pulleys typically employ a closed structure, requiring the cable to pass through the side of the pulley, suitable for fixed installations.

[0003] Existing marine pulleys are mostly enclosed structures, requiring cables to be threaded through the end of the pulley. This is inconvenient during frequent cable loading and unloading, impacting operational efficiency. Furthermore, traditional pulleys use bolts for fixing, which tend to loosen over time, affecting structural stability. Therefore, there is an urgent need for a marine pulley that facilitates rapid cable loading and unloading while maintaining a robust structure. Utility Model Content

[0004] The purpose of this invention is to provide an open pulley for ships to solve the problems of inconvenience in threading cables and insufficient structural stability of existing pulleys.

[0005] The technical solution provided by this utility model is an open pulley for ships, including a stainless steel frame and a pulley body. The frame is generally C-shaped, and the pulley body is connected to the lower part of the frame body through a first fixed shaft. The frame is provided with protective plates matching the pulley body on both sides of the pulley body, and the frame is provided with an opening for the cable to enter and exit between the C-shaped structure and the protective plates. One end of the first fixed shaft is a rectangular structure, and the other end is fixed by a nut thread. A lifting ring is fixed to the top of the frame.

[0006] As a preferred technical solution of this utility model, the bottom of the frame is provided with a through hole that runs through the top and bottom of the frame.

[0007] As a preferred technical solution of this utility model, the frame is provided with a corresponding slot at one end of the rectangular structure of the fixed axis, and the slot is provided with a positioning protrusion that limits the first fixed axis.

[0008] As a preferred embodiment of this utility model, the first fixed shaft is inserted into a plug on one side of the nut to prevent the nut from coming off.

[0009] As a preferred technical solution of this utility model, the protective plate and the frame are fixed together as an integral structure by welding.

[0010] As a preferred technical solution of this utility model, a guide plate is provided inside the frame, located above the pulley body and directly opposite the opening.

[0011] As a preferred technical solution of this utility model, the inner side of the frame located above the opening is rotatably connected to a limiting plate via a second fixed shaft, and a torsion spring for resetting the limiting plate is provided between the limiting plate and the top of the frame. The second fixed shaft has the same structure as the first fixed shaft.

[0012] As a preferred technical solution of this utility model, the lifting ring consists of a base located inside the upper part of the frame and a U-shaped ring located at the top of the frame, and the base is fixed to the U-shaped ring by welding through a connecting rod passing through the frame.

[0013] The advantages of this utility model compared with the prior art are as follows:

[0014] 1. This open pulley adopts a C-shaped frame and open design, allowing the cable to enter the pulley quickly from the side, improving work efficiency. A guide plate is added to ensure the cable enters the pulley smoothly and reduce wear. At the same time, the opening can be automatically closed by setting a limit plate and a torsion spring at the opening to prevent the cable from accidentally coming out.

[0015] 2. The fixed shaft of this open pulley is fixed with a rectangular slot and nut, and a bolt is provided to make the fixed shaft a double fixed structure, which prevents loosening and extends service life.

[0016] 3. This open pulley uses a stainless steel frame instead of the traditional cast iron body, which not only provides higher strength but also a longer service life. Attached Figure Description

[0017] Figure 1 This utility model relates to the structure of an open pulley for ships. Figure 1 .

[0018] Figure 2 This utility model relates to the structure of an open pulley for ships. Figure 2 .

[0019] Figure 3 This is a cross-sectional three-dimensional structural diagram of an open pulley for ships according to the present invention.

[0020] Figure 4 This is a structural diagram of the bolt insertion point of an open pulley for ships according to this utility model.

[0021] As shown in the figure:

[0022] 1. Frame; 2. Pulley body; 3. First fixed shaft; 4. Protective plate; 5. Opening; 6. Nut; 7. Lifting ring; 8. Through hole; 9. Slot; 10. Positioning protrusion; 11. Bolt; 12. Guide plate; 13. Second fixed shaft; 14. Limiting plate; 15. Torsion spring; 16. Base; 17. U-shaped ring; 18. Connecting rod. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Example 1:

[0026] As per the instruction manual Figure 1-4 As shown, an open pulley for ships includes a stainless steel frame 1 and a pulley body 2. The frame 1 has an overall C-shaped structure. The pulley body 2 is connected to the lower part of the frame 1 through a first fixed shaft 3. A lifting ring 7 is fixed to the top of the frame 1. The lifting ring 7 consists of a base 16 located inside the upper part of the frame 1 and a U-shaped ring 17 located at the top of the frame 1. The base 16 is connected to the frame 1 by a connecting rod 18, which passes through the frame 1 and the U-shaped ring 17 and is welded together to form an integral mechanism. The bottom of the frame 1 has a through hole 8 that runs through the top and bottom of the frame 1, which can be used for auxiliary fixing to adapt to different installation requirements.

[0027] In this utility model, the frame 1 is provided with protective plates 4 on both sides of the pulley body 2, which are matched with the pulley body 2. The protective plates 4 and the frame 1 are fixed together by welding. The frame 1 is provided with an opening 5 between the C-shaped structure and the protective plates 4 for the cable to enter and exit. Inside the frame 1, a guide plate 12 is provided above the pulley body 2 and directly opposite the opening 5.

[0028] In this utility model, the inner side of the frame 1 located above the opening 5 is rotatably connected to the limiting plate 14 via the second fixed shaft 13, and a torsion spring 15 for resetting the limiting plate 14 is provided between the limiting plate 14 and the top of the frame 1. The second fixed shaft 13 has the same structure as the first fixed shaft 3.

[0029] In this utility model, one end of the first fixed shaft 3 is a rectangular structure, and the other end is fixed by a nut 6. The frame 1 is provided with a corresponding slot 9 at one end of the rectangular structure of the fixed shaft, and the slot 9 is provided with a positioning protrusion 10 that limits the first fixed shaft 3. The first fixed shaft 3 is inserted with a plug 11 to prevent the nut 6 from falling off on one side of the nut 6.

[0030] In a specific implementation of this utility model, the cable enters the inner side of the pulley body 2 through the opening 5, and the limiting plate 14 automatically closes under the action of the torsion spring 15 to prevent the cable from coming out (the limiting plate 14 can be installed or not depending on the situation); the guide plate 12 guides the cable to slide smoothly and reduces friction; the fixed shaft is fixed at both ends through the slot 9 and the nut 6, and a bolt 11 is added for double fixing to ensure structural stability; the lifting ring 7 can be used to suspend the pulley; the bottom through hole 8 is designed for auxiliary fixing to adapt to different installation requirements.

[0031] The present invention and its embodiments have been described above. This description is not restrictive, and the specific embodiments shown are only one of the embodiments of the present invention. The actual structure is not limited to this. In short, if a person skilled in the art is inspired by this description and designs a similar structure and embodiment without departing from the inventive spirit of the present invention, such design should fall within the protection scope of the present invention.

Claims

1. A marine open-end pulley, characterized in that: It includes a stainless steel frame (1) and a pulley body (2). The frame (1) is C-shaped, and the pulley body (2) is connected to the lower part of the frame (1) through a first fixed shaft (3). The frame (1) is provided with protective plates (4) that match the pulley body (2) on both sides, and the frame (1) is provided with an opening (5) for the cable to enter and exit between the C-shaped structure and the protective plate (4); One end of the first fixed shaft (3) is a rectangular structure, and the other end is fixed by a nut (6) thread; The top of the frame (1) is fixed with a lifting ring (7).

2. The open pulley for ships according to claim 1, characterized in that: The bottom of the frame (1) is provided with a through hole (8) that runs through the top and bottom of the frame (1).

3. The open pulley for ships according to claim 1, characterized in that: The frame (1) has a corresponding slot (9) at one end of the rectangular structure of the fixed shaft, and the slot (9) has a positioning protrusion (10) that limits the first fixed shaft (3).

4. A marine open pulley according to claim 1, characterized in that: The first fixed shaft (3) is located on one side of the nut (6) and is plugged with a bolt (11) to prevent the nut (6) from coming off.

5. A marine open pulley according to claim 1, characterized in that: The protective plate (4) and the frame (1) are fixed together by welding to form an integral structure.

6. A marine open pulley according to claim 1, characterized in that: Inside the frame (1), a guide plate (12) is provided above the pulley body (2) and directly opposite the opening (5).

7. A marine open pulley according to claim 1, characterized in that: The frame (1) is located on the inner side above the opening (5) and is rotatably connected to a limiting plate (14) via a second fixed shaft (13). A torsion spring (15) for resetting the limiting plate (14) is provided between the limiting plate (14) and the top of the frame (1). The second fixed shaft (13) has the same structure as the first fixed shaft (3).

8. A marine open pulley according to claim 1, characterized in that: The lifting ring (7) consists of a base (16) located inside the frame (1) and a U-shaped ring (17) located at the top of the frame (1). The base (16) is connected to the frame (1) by a connecting rod (18) and is fixed together with the U-shaped ring (17) by welding.

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