CN219806940U

CN219806940U - Buffer device in ship rescue boat retraction system

Info

Publication number: CN219806940U
Application number: CN202321348365.4U
Authority: CN
Inventors: 胡尊立; 庄海江; 倪英良; 沈伟; 孟少城
Original assignee: Jiangyin Beihai Lsa Co ltd
Current assignee: Jiangyin Beihai Lsa Co ltd
Priority date: 2023-05-30
Filing date: 2023-05-30
Publication date: 2023-10-10
Anticipated expiration: 2033-05-30

Abstract

The utility model discloses a buffer device in a ship rescue boat retraction system, which comprises an arm support structure, wherein one end of the arm support structure is provided with an arm support pulley, the other end of the arm support structure is provided with a winch, a steel wire rope is wound on the winch, the buffer device is arranged in the middle of the arm support structure, and the steel wire rope passes through the buffer device and bypasses the arm support pulley to be connected with a rescue boat; the buffer device comprises a mounting frame, a buffer oil cylinder and a buffer pulley; the mounting bracket is fixed on the cantilever crane structure and provides mounting platform for the buffer cylinder, and buffer pulley is connected in the free end rotation of buffer cylinder, and this device cluster is gone into on the jacking equipment wire rope of salvage ship, and when the capstan winch was braked, wire rope applyed the pulling force to the buffer cylinder to make the free end of buffer cylinder stretch out, and then release a section distance with wire rope, realize providing the buffering effect to the salvage ship, reduce the impact force that salvage ship end produced greatly.

Description

Buffer device in ship rescue boat retraction system

Technical Field

The utility model relates to the field of rescue boat retraction equipment, in particular to a buffer device in a ship rescue boat retraction system.

Background

According to the regulations of the international maritime convention, the ocean vessel must be equipped with a rescue boat and a retraction device matched with the rescue boat. Generally, the rescue boat retraction device realizes the operations of lifting and lowering the boat through the boat lifting rope and the guide pulley device.

In the existing ship rescue boat retraction device, as disclosed in the application number CN202021788764.9, the on-load sea wave compensation winch comprises a winch base, a suspension arm fixedly arranged on the winch base, a winding drum arranged on the winch base, a steel wire rope for suspending the rescue boat and wound on the winding drum, wherein the winding drum is driven by a gear box, and the gear box is connected with a main hydraulic motor and an auxiliary hydraulic motor; the top end of the suspension arm is provided with an arm support pulley, the steel wire rope bypasses the arm support pulley and then is connected with a rescue boat, and the suspension arm is provided with a safety device for compensating the loosening state of the steel wire rope by sea waves. The rescue boat is directly connected to the winch through the steel wire rope, so that the retraction operation of the rescue boat is realized. However, the rescue boat is braked halfway due to various reasons during lifting and lowering, the rescue boat receives sudden impact force during braking, the impact force cannot be effectively reduced by a direct connection mode, personnel on the boat feel bad, and in view of the above, a buffer device in a ship rescue boat retraction system is required to be provided to solve the problems.

Disclosure of Invention

The utility model aims to solve the technical problems and provides a buffer device in a ship rescue boat retraction system.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the buffer device in the ship rescue boat retraction system comprises a boom structure, wherein one end of the boom structure is provided with a boom pulley, the other end of the boom structure is provided with a winch, a steel wire rope is wound on the winch, the buffer device is arranged in the middle of the boom structure, and the steel wire rope penetrates through the buffer device and bypasses the boom pulley to be connected with the rescue boat;

the buffer device comprises a mounting frame, a buffer oil cylinder and a buffer pulley; the mounting frame is fixed on the arm support structure to provide a mounting platform for the buffer oil cylinder, and the free end of the buffer oil cylinder is rotationally connected with the buffer pulley.

Further, the free end of the buffer oil cylinder is provided with an oil cylinder rod, the end part of the oil cylinder rod is provided with a pulley frame, the pulley frame is of a U-shaped structure, and the buffer pulley is rotatably connected in an opening of the pulley frame.

Further, one end, far away from the opening, of the pulley frame is a connecting end, the connecting end is provided with a sinking groove, the end part of the oil cylinder rod is provided with a plug connector, the connecting end is provided with a first pin hole perpendicular to the axis direction of the sinking groove, and the plug connector is provided with a second pin hole; and a positioning pin is arranged through the first pin hole and the second pin hole.

Further, third pin holes are formed in two sides of the pulley frame, a pulley rotating shaft penetrates through the third pin holes, a pulley bearing is arranged on the inner ring of the buffer pulley, and a bearing sealing cover is arranged between two sides of the pulley bearing and the inner wall of the pulley frame.

Further, the pulley bearing is provided with an inner ring and an outer ring, the inner ring is in interference fit with the pulley rotating shaft, the bearing sealing cover is annular, and the bearing sealing cover is provided with an inner ring which is in tight fit with the inner ring in a propping way and an outer ring which is matched with the ring groove of the buffer pulley; the ring groove is arranged on the side wall of the buffer pulley and is coaxial with the buffer pulley, and the outer ring is buckled into the ring groove and is in relative rotation connection with the ring groove; the inner ring and the outer ring are arranged on the same side face of the bearing sealing cover.

Further, the pulley rotating shaft comprises a shaft body, one end of the shaft body is provided with an end cap, the end cap is connected with the shaft body to form a T shape, the other end of the shaft body is provided with a fixed groove, a stop plate is matched with the fixed groove, the stop plate is clamped into the fixed groove, and the stop plate is fixed on the side wall of the pulley frame through a screw.

Further, the buffer device further comprises a guide pulley, the guide pulley is arranged on the arm support structure, and the steel wire rope bypasses the guide pulley.

Compared with the prior art, the utility model has the beneficial effects that: the device is connected onto the lifting equipment steel wire rope of the rescue boat in series, when the winch is braked, the steel wire rope applies tension to the buffer oil cylinder, so that the free end of the buffer oil cylinder stretches out, the steel wire rope is released for a certain distance, the effect of buffering the rescue boat is achieved, and the impact force generated at the end of the rescue boat is greatly reduced. The sealing covers arranged on the two sides of the buffer pulley can effectively seal lubricating grease of the bearing inside, so that external water vapor is prevented from entering to rust the bearing, and the device can be used for a long time.

Drawings

FIG. 1 is a schematic view of a marine rescue boat retraction system according to the present utility model;

FIG. 2 is a schematic structural diagram of a buffer device of the receiving and releasing system of the present utility model;

FIG. 3 is a schematic view of the buffer pulley of the present utility model;

in the figure: 1. a boom structure; 2. arm support pulleys; 3. a winch; 4. a wire rope; 5. a guide pulley; 6. a mounting frame; 7. a buffer cylinder; 8. a buffer pulley; 9. an oil cylinder rod; 10. a pulley frame; 11. a connection end; 12. sinking grooves; 13. a plug; 14. a first pin hole; 15. a second pin hole; 16. a positioning pin; 17. a third pin hole; 18. a pulley rotating shaft; 19. a pulley bearing; 20. a bearing sealing cover; 21. an inner ring; 22. an outer ring; 23. an inner ring; 24. an outer ring; 25. a ring groove; 26. a shaft body; 27. an end cap; 28. a fixing groove; 29. and a stop plate.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

The buffer device in the ship rescue boat retraction system comprises a cantilever crane structure 1, wherein the cantilever crane is arranged on a ship body and can rotate to extend outwards as shown in fig. 1. One end of the arm support structure 1 is provided with an arm support pulley 2, the other end of the arm support structure is provided with a winch 3, a steel wire rope 4 is wound on the winch 3, and the winch 3 drives the steel wire rope 4 to lift, retract and release a rescue boat suspended and fixed at the end of the arm support pulley 2. The buffer device is arranged in the middle of the arm support structure 1, and the steel wire rope 4 passes through the buffer device and bypasses the arm support pulley 2 to be connected with the rescue boat;

specifically, as shown in fig. 1 and 2, the buffer device comprises a mounting frame 6, a buffer oil cylinder 7 and a buffer pulley 8; the mounting frame 6 is fixed on the arm frame structure 1 to provide a mounting platform for the buffer oil cylinder 7, the mounting frame 6 can be a vertical plate vertically fixed on the upper end face of the arm frame structure 1, and the cylinder body part of the buffer oil cylinder 7 is fixed on the mounting frame 6 through bolts to provide a fixed position for the buffer device.

The free end of the buffer oil cylinder 7 is rotationally connected with the buffer pulley 8, the steel wire rope 4 bypasses the buffer pulley 8, when the winch 3 end is used for controlling braking, the steel wire rope 4 at the winch 3 end is positioned, the steel wire rope 4 at the rescue boat end exerts a pulling force on the buffer pulley 8 under the action of gravity, the buffer oil cylinder 7 is pulled out under the action of the pulling force, hydraulic oil in the buffer oil cylinder 7 can buffer the steel wire rope 4, so that the rescue boat fixed at the end of the steel wire rope 4 gradually stops falling, and the hydraulic pressure of the buffer oil cylinder 7 is utilized for buffering the rescue boat in the lifting process. The buffering device further comprises a guide pulley 5, the guide pulley 5 is arranged on the arm support structure 1, and the steel wire rope 4 is arranged around the guide pulley 5. The specific trend of the steel wire rope 4 is shown in fig. 1, the steel wire rope 4 is wound on the winch 3, the steel wire rope 4 is wound on one side of the buffer pulley 8 and turns to be wound out from the other side, then enters from one side of the guide pulley 5, turns again to be wound out from the other side, and then enters the arm support pulley 2.

The free end of the buffer oil cylinder 7 is provided with an oil cylinder rod 9, the end part of the oil cylinder rod 9 is provided with a pulley frame 10, the pulley frame 10 is of a U-shaped structure, and the buffer pulley 8 is rotatably connected in an opening of the pulley frame 10. The pulley frame 10 is connected with the buffer oil cylinder 7 through the connecting end 11, the connecting end 11 is provided with a sinking groove 12, the end part of the oil cylinder rod 9 is provided with an inserting head 13, the connecting end 11 is provided with a first pin hole 14 perpendicular to the axial direction of the sinking groove 12, and the inserting head 13 is provided with a second pin hole 15; the positioning pins 16 are arranged through the first pin holes 14 and the second pin holes 15, as shown in fig. 2, the positioning pins 16 sequentially pass through the first pin holes 14 and the second pin holes 15, so that the pulley frame 10 is fixed on the buffer oil cylinder 7, and it is understood that the buffer pulley 8 can be fixedly arranged in the horizontal direction by the plug-in mode of the pin rods.

Third pin holes 17 are formed in two sides of the pulley frame 10, a pulley rotating shaft 18 penetrates through the third pin holes 17, a pulley bearing 19 is arranged on an inner ring 23 of the buffer pulley 8, and a bearing sealing cover 20 is arranged between two sides of the pulley bearing 19 and the inner wall of the pulley frame 10. The sealing covers are arranged on the two sides of the pulley bearing 19, so that the pulley bearing 19 can be effectively sealed, lubricating grease is filled between the two sealing covers, a good lubricating effect is achieved, and the sealing covers can block the entry of external sundries. Specifically, as shown in fig. 3, the pulley bearing 19 has an inner ring 21 and an outer ring 22, the inner ring 21 is in interference fit and sleeved on the pulley rotating shaft 18, the bearing sealing cover 20 is in a ring shape, and the bearing sealing cover 20 is provided with an inner ring 23 which is in abutting fit with the inner ring 21 and an outer ring 24 which is matched with the ring groove 25 of the buffer pulley 8; the annular groove 25 is an annular groove 25 which is arranged on the side wall of the buffer pulley 8 and is coaxial with the buffer pulley, and the outer ring 24 is buckled in the annular groove 25 and is connected with the buffer pulley in a relative rotation manner; the inner ring 23 and the outer ring 24 are arranged on the same side surface of the bearing sealing cover 20, and when in actual installation, the sealing covers on the two sides are abutted against the inner ring 21 of the pulley bearing 19 through the inner ring 23, so that the sealing covers can be kept not to rotate when the buffer pulley 8 rotates, the annular grooves 25 on the two sides of the buffer pulley 8 are annular, and the outer ring 24 is clamped into the annular grooves 25, so that the sealing on the outer ring 22 side of the bearing can be realized, and a good lubricating sealing effect can be kept.

The pulley rotating shaft 18 comprises a shaft body 26, an end cap 27 is arranged at one end of the shaft body 26, the end cap 27 is connected with the shaft body 26 to form a T shape, a fixing groove 28 is arranged at the other end of the shaft body 26, a stop plate 29 is matched with the fixing groove, the stop plate 29 is clamped in the fixing groove 28, and the stop plate 29 is fixed on the side wall of the pulley frame 10 through a screw. In actual installation, after the pulley rotating shaft 18 passes through the third pin hole 17, the other end part provided with the fixing groove 28 just exposes out of the outer wall of the mounting frame 6, and then the stop plate 29 is clamped into the fixing groove 28, so that the two ends of the pulley rotating shaft 18 are fixed.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. The buffer device in the ship rescue boat retraction system is characterized by comprising a boom structure (1), wherein one end of the boom structure (1) is provided with a boom pulley (2), the other end of the boom structure is provided with a winch (3), a steel wire rope (4) is wound on the winch (3), the buffer device is arranged in the middle of the boom structure (1), and the steel wire rope (4) penetrates through the buffer device and bypasses the boom pulley (2) to be connected with a rescue boat;

the buffer device comprises a mounting frame (6), a buffer oil cylinder (7) and a buffer pulley (8); the mounting frame (6) is fixed on the arm support structure (1) to provide a mounting platform for the buffer oil cylinder (7), and the free end of the buffer oil cylinder (7) is rotationally connected with the buffer pulley (8).

2. The buffer device in the ship rescue boat retraction system according to claim 1, wherein the free end of the buffer oil cylinder (7) is provided with an oil cylinder rod (9), the end part of the oil cylinder rod (9) is provided with a pulley frame (10), the pulley frame (10) is in a U-shaped structure, and the buffer pulley (8) is rotatably connected in an opening of the pulley frame (10).

3. The buffer device in the ship rescue boat retraction system according to claim 2, wherein one end of the pulley frame (10) far away from the opening is a connecting end (11), the connecting end (11) is provided with a sinking groove (12), the end part of the oil cylinder rod (9) is provided with an inserting head (13), the connecting end (11) is provided with a first pin hole (14) perpendicular to the axis direction of the sinking groove (12), and the inserting head (13) is provided with a second pin hole (15); a positioning pin (16) is arranged through the first pin hole (14) and the second pin hole (15).

4. The buffer device in the ship rescue boat retraction system according to claim 2, wherein the pulley frame (10) is provided with a third pin hole (17), a pulley rotating shaft (18) is arranged through the third pin hole (17), the inner ring (23) of the buffer pulley (8) is provided with a pulley bearing (19), and a bearing sealing cover (20) is arranged between the two sides of the pulley bearing (19) and the inner wall of the pulley frame (10).

5. The buffer device in the ship rescue boat retraction system according to claim 4, wherein the pulley bearing (19) is provided with an inner ring (21) and an outer ring (22), the inner ring (21) is in interference fit and sleeved on the pulley rotating shaft (18), the bearing sealing cover (20) is in a circular ring shape, the bearing sealing cover (20) is provided with an inner ring (23) which is in abutting fit with the inner ring (21) and an outer ring (24) which is in fit with the annular groove (25) of the buffer pulley (8); the ring groove (25) is a ring groove (25) which is arranged on the side wall of the buffer pulley (8) and is coaxial with the buffer pulley, and the outer ring (24) is buckled in the ring groove (25) and is connected with the buffer pulley in a relative rotation way; the inner ring (23) and the outer ring (24) are arranged on the same side face of the bearing sealing cover (20).

6. The buffer device in the ship rescue boat retraction system according to claim 4, wherein the pulley rotating shaft (18) comprises a shaft body (26), one end of the shaft body (26) is provided with an end cap (27), the end cap (27) is connected with the shaft body (26) to form a T-shaped structure, the other end of the shaft body (26) is provided with a fixing groove (28), a stop plate (29) is matched with the fixing groove (28), the stop plate (29) is clamped in the fixing groove (28), and the stop plate (29) is fixed on the side wall of the pulley frame (10) through a screw.

7. The buffering device in the ship rescue boat retraction system according to claim 1, wherein the buffering device further comprises a guide pulley (5), the guide pulley (5) is arranged on the arm support structure (1), and the steel wire rope (4) is arranged around the guide pulley (5).