Hydraulic gravity inverted arm type lifeboat frame

Abstract

The utility model belongs to the technical field of lifeboat frames, and discloses a hydraulic gravity inverted arm type lifeboat frame which comprises a supporting piece, a supporting arm and a bottom plate are rotationally connected to the supporting piece, a hydraulic cylinder is connected between the supporting piece and the supporting arm, a winding part and a traction part wound on the winding part are installed on the supporting arm, and the bottom plate is connected with the supporting arm. The traction part is wound or unwound through the winding part, so that the lifeboat frame ascends or descends relative to the horizontal plane, a supporting face for supporting the bottom of the lifeboat frame is formed at the top of the bottom plate, the top of the supporting piece is fixedly connected with a driving piece, and the output end of the driving piece is connected with the bottom plate. The driving piece drives the bottom plate to rotate relative to the supporting piece till the bottom plate makes contact with the bottom of the lifeboat, then the lifeboat is supported through the bottom plate, the acting force of the steel cable is dispersed and prevented from acting on the steel cable for a long time, the load of the steel cable is reduced, and the service life of the steel cable is prolonged.

Description

Technical Field

[0001] This utility model belongs to the field of lifeboat frame technology, specifically relating to a hydraulic gravity inverted arm type lifeboat frame. Background Technology

[0002] Currently, offshore platforms, ships, and other watercraft are generally equipped with lifeboats as emergency lifesaving equipment. Lifeboat racks are crucial emergency lifesaving facilities on ships, primarily used to support lifeboats and control their vertical movement. In emergencies, such as abandoning ship, lifeboat racks assist crew and passengers in quickly and safely lowering lifeboats into the water, helping them detach from the mother ship, sustain life, and await rescue. The quality and stability of the lifeboat rack are critical to the use of lifeboats and rescue missions. It typically consists of a combination of fixed and movable supports, ensuring the lifeboat remains stable during storage and deployment.

[0003] There are several types of lifeboat davits, mainly divided into inverted boom davits and free-fall davits. The inverted boom davit uses a hydraulic cylinder to drive the inverted boom to rotate around a fixed point, thus moving the lifeboat davit up and down. This design allows for the rapid deployment of lifeboats in emergencies. However, during use, the lifeboat is suspended by steel cables for extended periods, resulting in continuous stress on the cables, increasing their load and shortening their lifespan. Utility Model Content

[0004] The purpose of this invention is to provide a hydraulic gravity inverted arm type lifeboat frame to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a hydraulic gravity inverted arm lifeboat frame, comprising a support member fixed to a ship, a support arm rotatably connected to the support member, and a hydraulic cylinder connected between the support member and the support arm. The support arm rotates relative to the support member by extending and retracting the hydraulic cylinder. A towing member is installed on the support arm, and the towing member includes a winding part and a traction part wound around the winding part for connecting the lifeboat frame. The lifeboat frame rises or falls relative to the horizontal plane by winding the traction part or unwinding the traction part through the winding part.

[0006] A base plate is rotatably connected to the support member. The base plate is located below the winding part, and the top of the base plate forms a support surface that supports the bottom of the lifeboat frame. A drive member is fixedly connected to the top of the support member. The output end of the drive member is connected to the base plate. The base plate is rotated by the drive member to contact or separate from the bottom of the lifeboat frame.

[0007] Preferably, the support member includes a base;

[0008] Two side plates are fixedly connected to each of the symmetrical sides of the base, and fixing screws are screwed onto the side plates.

[0009] Preferably, the winding section includes a mounting frame fixedly connected to the support arm, a winding roller is rotatably connected inside the mounting frame, and a first motor is fixedly connected to the mounting frame. The output end of the first motor is connected to the winding roller, and the traction section is wound around the winding roller.

[0010] Preferably, the traction part includes a steel cable, a guide frame is fixedly connected to the top of the support arm, and two guide wheels are rotatably connected to the support arm. The guide frame is located between the two guide wheels. One end of the steel cable is wound around the take-up roller, and the other end passes through the guide wheel, the guide frame, and the guide wheel in sequence. A hook is fixedly connected to the free end of the steel cable.

[0011] Preferably, the driving component includes a second motor, a driven gear is fixedly connected to one side of the base plate, the second motor is fixedly connected to the top of the base, and the output end of the second motor is connected to a driving gear that matches the driven gear.

[0012] Preferably, the base plate has two symmetrically formed side grooves that match the support arm, and the base plate has a through mounting groove between the two side grooves, and multiple auxiliary rollers are rotatably connected inside the mounting groove.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) By setting a rotatable base plate, when the lifeboat is lifted by the towing part, the base plate is driven to rotate relative to the support member by the drive member until the base plate contacts the bottom of the lifeboat, thereby supporting the lifeboat by the base plate, thereby dispersing the force of the steel cable, avoiding the force from acting on the steel cable for a long time, reducing the load on the steel cable, and extending the service life of the steel cable.

[0015] (2) Based on the above-mentioned beneficial effects, when the device lowers the lifeboat, the present invention rotates the bottom plate relative to the base, so that the free end of the bottom plate tilts downward to guide the lifeboat, and guides the lifeboat to slide down through the auxiliary roller, so as to avoid the lifeboat falling directly onto the water surface, reduce the impact on the lifeboat, and improve the stability of the device when lowering the lifeboat. Attached Figure Description

[0016] Figure 1 This is one of the perspective views of this utility model;

[0017] Figure 2 This is a second perspective view of the present utility model;

[0018] Figure 3 This is the third perspective view of the present utility model;

[0019] Figure 4 This is a front view of the present invention;

[0020] Figure 5 This is a perspective view of the base plate of this utility model after it has been rotated;

[0021] In the diagram: 1. Side plate; 2. Guide wheel; 3. Side groove; 4. Support arm; 5. Guide frame; 6. Mounting groove; 7. Mounting frame; 8. Steel cable; 9. Take-up roller; 10. First motor; 11. Auxiliary roller; 12. Hydraulic cylinder; 13. Drive gear; 14. Base; 15. Fixing screw; 16. Driven gear; 17. Second motor; 18. Base plate; 19. Hook. Detailed Implementation

[0022] 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.

[0023] Please see Figures 1-5 As shown, this utility model provides the following technical solution:

[0024] A hydraulic gravity-operated inverted arm lifeboat frame includes a support member fixed to a ship, a support arm 4 rotatably connected to the support member, and a hydraulic cylinder 12 connected between the support member and the support arm 4. The support arm 4 rotates relative to the support member by extending and retracting the hydraulic cylinder 12. A towing member is installed on the support arm 4. The towing member includes a winding part and a traction part wound around the winding part for connecting the lifeboat. The lifeboat rises or falls relative to the horizontal plane by winding the traction part or unwinding the traction part through the winding part.

[0025] The base plate 18 is rotatably connected to the support member. The base plate 18 is located below the winding part, and the top of the base plate 18 forms a support surface that supports the bottom of the lifeboat. A drive member is fixedly connected to the top of the support member. The output end of the drive member is connected to the base plate 18. The base plate 18 is rotated by the drive member to contact or separate from the bottom of the lifeboat.

[0026] The above technical solution fixes the support component to the ship. After the support component is fixed, when personnel need to lift the lifeboat, the hydraulic cylinder 12 operates, causing the hydraulic cylinder 12 to push the support arm 4 to rotate relative to the support component, thus tilting the support arm 4. Then, the free end of the traction part is connected to the lifeboat. The winding part operates, causing the winding part to wind up the traction part, pulling the lifeboat and raising it relative to the water surface until the lifeboat is moved onto the ship. The hydraulic cylinder 12 operates again, causing the hydraulic cylinder 12 to push the support arm 4 to rotate relative to the support component, thus rotating the support arm 4 back to its original position. The drive component operates, and the lifeboat continues to move. The driving component drives the base plate 18 to rotate relative to the support component, thereby tilting the base plate 18 until the top of the base plate 18 contacts the bottom of the lifeboat, thus supporting the lifeboat, reducing the force on the traction part, and extending the service life of the traction part. When personnel need to lower the lifeboat, the hydraulic cylinder 12 works, thereby pushing the support arm 4 to rotate relative to the support component, thereby tilting the support arm 4, and then connecting the free end of the traction part to the lifeboat. The winding part works, thereby winding the traction part, causing the traction part to pull the lifeboat, thereby lowering the lifeboat relative to the water surface until the lifeboat moves to the water surface.

[0027] Specifically, in one embodiment, regarding the aforementioned support member:

[0028] like Figures 1-5 As shown, the support includes a base 14;

[0029] The base 14 has two side plates 1 fixedly connected to both sides symmetrically, and the side plates 1 are screwed with fixing screws 15.

[0030] In this embodiment, when personnel need to fix the support, the base 14 is placed on the ship, the fixing screw 15 is inserted into the side plate 1 and rotated, and the fixing screw 15 abuts against the side plate 1, thereby fixing the side plate 1 and the base 14, and the base 14 supports the support arm 4.

[0031] In addition, regarding the aforementioned winding portion in this utility model:

[0032] like Figures 1-5 As shown, the winding section includes a mounting frame 7 fixedly connected to the support arm 4. A winding roller 9 is rotatably connected inside the mounting frame 7, and a first motor 10 is fixedly connected to the mounting frame 7. The output end of the first motor 10 is connected to the winding roller 9, and the traction section is wound around the winding roller 9.

[0033] In this embodiment, the mounting frame 7 is supported by the support arm 4. When the personnel need to rewind the traction part, the first motor 10 works, thereby driving the take-up roller 9 to rotate on the mounting frame 7, and the take-up roller 9 rewinds and unwinds the traction part.

[0034] Specifically, in one embodiment, regarding the aforementioned traction portion:

[0035] like Figures 1-5 As shown, the traction part includes a steel cable 8, a guide frame 5 is fixedly connected to the top of the support arm 4, and two guide wheels 2 are rotatably connected to the support arm 4. The guide frame 5 is located between the two guide wheels 2. One end of the steel cable 8 is wound around the take-up roller 9, and the other end passes through the guide wheel 2, the guide frame 5 and the guide wheel 2 in sequence. The free end of the steel cable 8 is fixedly connected to a hook 19.

[0036] In this embodiment, when the take-up roller 9 rotates, the take-up roller 9 takes up or unwinds the steel cable 8, thereby causing the steel cable 8 to pull the hook 19, which in turn causes the hook 19 to move the lifeboat. Furthermore, when the steel cable 8 moves, the guide frame 5 and the guide wheel 2 work together to make the movement of the steel cable 8 more stable.

[0037] Furthermore, regarding the aforementioned driving component in this utility model:

[0038] like Figures 1-5 As shown, the driving component includes a second motor 17, a driven gear 16 is fixedly connected to one side of the base plate 18, the second motor 17 is fixedly connected to the top of the base 14, and the output end of the second motor 17 is connected to a drive gear 13 that matches the driven gear 16.

[0039] In this embodiment, when it is necessary to drive the base plate 18 to rotate, the second motor 17 works, thereby driving the drive gear 13 to rotate, which in turn drives the driven gear 16 to rotate, thereby causing the base plate 18 to rotate relative to the base 14, thus adjusting the angle of the base plate 18.

[0040] When the device needs to lower the lifeboat, in order to facilitate the lowering of the lifeboat, such as Figures 1-5 As shown, two side grooves 3 that match the support arm 4 are symmetrically opened on the base plate 18. A through mounting groove 6 is opened on the base plate 18. The mounting groove 6 is located between the two side grooves 3, and multiple auxiliary rollers 11 are rotatably connected inside the mounting groove 6.

[0041] In this embodiment, when the base plate 18 is rotated to a downward tilt angle, the lifeboat separates from the hook 19, causing the lifeboat to fall onto the base plate 18. The auxiliary roller 11 assists in moving the lifeboat, allowing it to slide onto the water surface and preventing it from falling directly into the water.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hydraulically gravity-operated inverted boom type lifeboat frame, characterized in that: Includes a support member fixed to the ship, on which a support arm (4) is rotatably connected, and a hydraulic cylinder (12) is connected between the support member and the support arm (4). The support arm (4) is rotated relative to the support member by extending and retracting the hydraulic cylinder (12). A towing member is installed on the support arm (4). The towing member includes a winding part and a traction part wound around the winding part for connecting the lifeboat frame. The lifeboat frame is raised or lowered relative to the horizontal plane by winding the traction part or unwinding the traction part through the winding part. A base plate (18) is rotatably connected to the support member. The base plate (18) is located below the winding part, and the top of the base plate (18) forms a support surface for supporting the bottom of the lifeboat frame. A drive member is fixedly connected to the top of the support member. The output end of the drive member is connected to the base plate (18). The base plate (18) is rotated by the drive member to contact or separate from the bottom of the lifeboat frame.

2. A hydraulic gravity davit type liferaft cradle according to claim 1, characterized in that: The support includes a base (14); The base (14) has two side plates (1) fixedly connected to its two symmetrical sides, and a fixing screw (15) is screwed onto the side plate (1).

3. The hydraulic gravity inverted boom type lifeboat frame according to claim 2, characterized in that: The winding section includes a mounting frame (7) fixedly connected to the support arm (4), a winding roller (9) is rotatably connected inside the mounting frame (7), and a first motor (10) is fixedly connected to the mounting frame (7). The output end of the first motor (10) is connected to the winding roller (9), and the traction section is wound around the winding roller (9).

4. A hydraulic gravity davit type liferaft cradle according to claim 3, characterized in that: The traction part includes a steel cable (8), a guide frame (5) is fixedly connected to the top of the support arm (4), and two guide wheels (2) are rotatably connected to the support arm (4). The guide frame (5) is located between the two guide wheels (2). One end of the steel cable (8) is wound around the take-up roller (9), and the other end passes through the guide wheel (2), the guide frame (5), and the guide wheel (2) in sequence. The free end of the steel cable (8) is fixedly connected to a hook (19).

5. A hydraulic gravity davit type liferaft cradle according to claim 4, characterized in that: The driving component includes a second motor (17), a driven gear (16) is fixedly connected to one side of the base plate (18), the second motor (17) is fixedly connected to the top of the base (14), and the output end of the second motor (17) is connected to a drive gear (13) that matches the driven gear (16).

6. A hydraulic gravity-operated inverted boom lifeboat frame according to claim 5, characterized in that: Two side grooves (3) matching the support arm (4) are symmetrically opened on the base plate (18). A through mounting groove (6) is opened on the base plate (18). The mounting groove (6) is located between the two side grooves (3), and multiple auxiliary rollers (11) are rotatably connected inside the mounting groove (6).

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