A lifeboat lifting device for passenger ships

Abstract

This invention relates to the field of lifeboat lifting, and discloses a lifeboat lifting device for passenger ships, including a swing arm structure, a swing arm drive device, and a lifting drive device installed on the passenger ship. The lifting drive device is connected to the lifeboat. The swing arm structure is provided with an anti-sway structure. The swing arm structure includes a vertically arranged sleeve assembly. A lifting cable on the swing arm drive device is connected to the top of the swing arm structure. The arc-shaped rod is provided with a toothed groove. The swing arm structure is provided with a swing arm locking device that stops the rotation of the swing arm structure by engaging with the toothed groove. The beneficial effects of this invention compared with the prior art are: when the swing arm structure rotates, the angle transmission structure drives the connecting gear to make the sleeve assembly rotate in the opposite direction around the sleeve axis at the same angle as the swing arm structure, so that the sleeve assembly is always in a vertical state, suppressing the swaying of the lifting cable, greatly improving the stability of the lifeboat during movement, reducing the swaying amplitude caused by inertia, reducing cable wear, and ensuring the safety of passengers.

Description

Technical Field

[0001] This invention relates to the field of lifeboat lifting, specifically to a lifeboat lifting device for passenger ships. Background Technology

[0002] In the field of passenger ship safety, lifeboat lifting devices are critical equipment for ensuring passenger safety, and their performance directly affects the rapid and stable deployment and retrieval of lifeboats in emergencies. However, existing passenger ship lifeboat lifting devices face the following pressing technical problems in practical applications:

[0003] During the raising and lowering of existing lifeboats, the lifting cables are prone to significant swaying due to inertia when the swing arm structure rotates, resulting in poor lifeboat stability. This swaying not only accelerates cable wear and shortens equipment lifespan, but also poses a significant safety hazard in emergencies, as the lifeboat's uncontrolled swaying could impede passenger evacuation.

[0004] Traditional swing arm structures rely on a single lifting cable for drive. If the cable breaks, the swing arm structure will lose traction and fall uncontrollably, lacking an effective emergency locking mechanism. This uncontrolled state could cause the lifeboat to collide with the passenger ship's hull or the water surface, resulting in secondary injuries and seriously threatening equipment safety and personnel lives.

[0005] Existing lifting devices are insufficient in suppressing the swaying of the lifting cables during the raising and lowering of lifeboats. Since the lifeboat is only connected to the swing arm structure by cables, it is prone to swaying during vertical raising and lowering due to cable slack or uneven force, resulting in an unstable raising and lowering process. This is especially true in complex environments such as wind and waves, making it difficult to ensure the stable take-off and landing of the lifeboat. Summary of the Invention

[0006] To solve the above-mentioned technical problems, the technical solution provided by the present invention is as follows:

[0007] A lifeboat lifting device for passenger ships includes a swing arm structure, a swing arm drive device, and a lifting drive device installed on the passenger ship. A lifting rope installed on the lifting drive device is connected to the lifeboat through the swing arm structure. The swing arm structure is provided with an anti-sway structure that can keep the lifting rope stable during operation by rotating with the swing arm structure. The anti-sway structure includes a vertically installed sleeve assembly that can retract and extend with the lifting rope. A lifting cable installed on the swing arm drive device is connected to the top of the swing arm structure. An arc-shaped rod is installed on the passenger ship that passes through the swing arm structure. The arc-shaped rod is provided with a toothed groove. A swing arm locking device is provided inside the swing arm structure that stops the rotation of the swing arm structure by engaging with the toothed groove.

[0008] As an improvement, the swing arm structure includes a rotating shaft that is rotatably connected to the passenger ship. Both ends of the rotating shaft are fixedly connected to the swing arm body. A force-bearing rod one and a force-bearing rod two are provided between the two swing arm bodies. The force-bearing rod one is located at the top of the swing arm body.

[0009] The anti-sway structure includes two sets of anti-sway devices. Both sets of anti-sway devices include a connecting gear sleeved on the outside of the force-bearing rod. Both ends of the connecting gear are fixedly connected to a sleeve sleeved on the outside of the force-bearing rod. The sleeve is fixedly connected to the sleeve assembly through a connector. When the rotating shaft rotates, it can drive the connecting gear to rotate in the opposite direction to the swing arm body at the same angle.

[0010] As an improvement, a reinforcing rod is provided between the first and second load-bearing rods. A fixing rod is provided between the first reinforcing rod and the swing arm body. A gear fixing plate is provided between the fixing rod and the first load-bearing rod. A transmission gear is provided on the gear fixing plate and meshes with the connecting gear. A reinforcing rod is provided between the second load-bearing rod and the rotating shaft. A transmission gear is provided on the second reinforcing rod. A fixing gear is fitted on the rotating shaft and fixed to the passenger ship and meshes with the transmission gear. The first and second transmission gears are connected by a toothed belt.

[0011] As an improvement, both transmission gear one and transmission gear two are composed of toothed component one and two toothed components two. The two toothed components two are located on both sides of toothed component one. Toothed component two meshes with connecting gear or fixed gear, and toothed component one meshes with toothed belt.

[0012] As an improvement, a bottom block is provided where the lifting rope passes through the sleeve assembly. The sleeve assembly includes a fixed sleeve that is fixedly connected to the connector. Several retractable sliding sleeves are provided inside the fixed sleeve. The bottom end of the innermost sliding sleeve is fixedly connected to the bottom block. The bottom block is connected to the lifeboat by a connecting cable.

[0013] As an improvement, the second reinforcing rod is provided with an anti-tooth-loosening structure that can press the toothed belt. The anti-tooth-loosening structure includes a fixed plate fixed to the top of the second reinforcing rod, a sliding rod slidably inserted in the fixed plate, a pressure plate at one end of the sliding rod, a roller at the end of the pressure plate that is rolled and connected to the toothed belt, guard plates on both sides that are slidably connected to the toothed belt, a spring three located between the fixed plate and the pressure plate on the sliding rod, and a limit block two at the other end of the sliding rod.

[0014] As an improvement, a slot is provided at the position where the arc-shaped rod passes through the swing arm body. A partition is provided in the slot, and a sliding block is slidably inserted into the partition. One end of the sliding block is provided with a toothed block that engages with the toothed groove, and the other end of the sliding block is provided with a force plate. A second spring is provided between the force plate and the inner wall of the slot. A slide groove is provided at the position where the sliding block is located below the partition. A limiting slider is slidably provided in the slide groove. The top of the limiting slider extends out of the slide groove and abuts against the partition. A first limiting block is provided at the top of the limiting slider. A first spring is provided between the inner wall of the slide groove and the limiting slider. A pull line that can drive the limiting slider to move in the slide groove is connected between the limiting slider and the first lifting cable.

[0015] As an improvement, one end of the pull cable is located inside the spring and passes through the sliding block. The sliding block is equipped with an auxiliary pulley connected to the pull cable. The pull cable passes through the swing arm body and is connected to the lifting cable. The swing arm body is equipped with an extension plate. Between the two extension plates is a redirection auxiliary rod that abuts against the lifting cable. The lifting cable is fixedly connected to the force rod. The connection point between the pull cable and the lifting cable is located between the redirection auxiliary rod and the force rod.

[0016] The advantages of this invention compared to the prior art are as follows:

[0017] 1. The anti-sway structure ensures the stability of lifting cable two and lifting cable three during operation:

[0018] When the swing arm structure rotates, it drives the connecting gear to rotate the sleeve assembly in the opposite direction around the sleeve axis at the same angle as the swing arm structure, keeping the sleeve assembly in a vertical position, suppressing the swaying of the lifting cable, greatly improving the stability of the lifeboat during movement, reducing the swaying amplitude caused by inertia, reducing cable wear, and ensuring the safety of passengers.

[0019] 2. The swing arm locking device can effectively prevent the swing arm structure from falling out of control:

[0020] When the lifting cable breaks, the tension on the cable decreases or disappears. Under the action of spring 2, the sliding block drives the toothed block to engage with the toothed groove. Under the action of spring 1, the limiting slider extends out of the groove to limit the sliding block, so that the swing arm body stops falling uncontrollably. This prevents the swing arm structure from falling uncontrollably due to the cable breakage, and provides safety protection for the lifting and lowering operation of the lifeboat.

[0021] 3. The sleeve assembly design suppresses the swaying of the lifting cable, enabling stable raising and lowering of the lifeboat:

[0022] When the lifting drive device raises or lowers the lifeboat by releasing or retracting the lifting cables, several sliding sleeves inside the fixed sleeve will extend or retract one by one as the lifeboat moves. The sleeve assembly in the vertical position suppresses the shaking of the lifting cables, allowing the lifeboat to move down or up stably and improving the smoothness of the lifting process.

[0023] 4. The anti-tooth-drop structure ensures stable operation of the anti-sway structure and facilitates the inspection of the toothed belt condition:

[0024] The springs in the anti-loosening structure apply pressure to the toothed belt through relative force, reducing the probability of tooth slippage when the toothed belt tension is insufficient. At the same time, the scale layer on the surface of the sliding rod can represent the tightness of the toothed belt. The staff can judge whether the toothed belt needs to be replaced by the scale value, which not only ensures the reliability of the transmission system, but also facilitates maintenance. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of a lifeboat lifting device for passenger ships according to the present invention. Figure 1 ;

[0026] Figure 2 This is a schematic diagram of the overall structure of a lifeboat lifting device for passenger ships according to the present invention. Figure 2 ;

[0027] Figure 3 This is a schematic diagram showing the overall disassembly of a lifeboat lifting device for passenger ships according to the present invention. Figure 1 ;

[0028] Figure 4 This is a schematic diagram showing the overall disassembly of a lifeboat lifting device for passenger ships according to the present invention. Figure 2 ;

[0029] Figure 5 This is a schematic diagram of the anti-sway structure of a lifeboat lifting device for passenger ships according to the present invention;

[0030] Figure 6 This is a schematic diagram of the anti-tooth dislodging structure of a lifeboat lifting device for passenger ships according to the present invention;

[0031] Figure 7 This invention relates to a lifting device for lifeboats on passenger ships. Figure 4 Schematic diagram at point A in the middle;

[0032] Figure 8 This is a schematic diagram of the swing arm locking device of a lifeboat lifting device for passenger ships according to the present invention. Figure 1 ;

[0033] Figure 9 This is a schematic diagram of the swing arm locking device of a lifeboat lifting device for passenger ships according to the present invention. Figure 2 ;

[0034] Figure 10 This is a schematic diagram of a sleeve assembly for a lifeboat lifting device for passenger ships according to the present invention;

[0035] Figure 11 This is a partial cross-sectional schematic diagram of the sleeve assembly of a lifeboat lifting device for passenger ships according to the present invention.

[0036] As shown in the figure: 1. Swing arm structure; 101. Rotating shaft; 102. Swing arm body; 103. Force-bearing rod one; 104. Reinforcing rod one; 105. Transmission wheel one; 106. Transmission wheel two; 107. Reinforcing rod two; 108. Force-bearing rod two; 109. Slot; 110. Partition plate; 111. Extension plate; 112. Directional auxiliary rod; 2. Swing arm drive device; 201. Drive box one; 202. Winding roller one; 203. Lifting cable one; 3. Lifting drive device; 301. Drive box two; 302. Winding roller two; 303. Lifting cable two; 304. Lifting cable three; 305. Base block; 306. Connecting cable; 4. Anti-sway structure; 401. Sleeve; 402. Connector; 403. Sleeve assembly; 4 404. Fixed sleeve; 405. Sliding sleeve; 406. Limiting slide bar; 407. Connecting gear; 408. Gear fixing plate; 409. Transmission gear one; 410. Transmission gear two; 411. Tooth belt; 412. Fixed gear; 5. Swing arm locking device; 501. Arc rod; 502. Tooth groove; 503. Sliding block; 504. Tooth block; 505. Slide groove; 506. Limiting slider; 507. Limiting block one; 508. Pull cable; 509. Spring one; 510. Auxiliary pulley; 511. Force plate; 512. Spring two; 6. Anti-tooth dislodgement structure; 601. Fixing plate; 602. Sliding rod; 603. Pressure plate; 604. Spring three; 605. Limiting block two; 606. Roller; 607. Guard plate. Detailed Implementation

[0037] The present invention will now be described in further detail with reference to the accompanying drawings.

[0038] Combined with appendix Figure 1 Appendix Figure 2 Appendix Figure 3 Appendix Figure 4 Appendix Figure 5 Appendix Figure 7 Appendix Figure 8 Appendix Figure 9 As shown:

[0039] A lifeboat lifting device for passenger ships includes a swing arm structure 1, a swing arm drive device 2, and a lifting drive device 3 installed on the passenger ship. The lifting ropes include a second lifting cable 303 and a third lifting cable 304 connected to the lifting drive device 3. The swing arm structure 1 is provided with an anti-sway structure 4 that can keep the second lifting cable 303 and the third lifting cable 304 stable during operation by rotating with the swing arm structure 1. The anti-sway structure 4 includes a sleeve assembly 403 that is vertically set and can follow the second lifting cable 303 and the third lifting cable 304 to complete the extension and retraction work. The first lifting cable 203 installed on the swing arm drive device 2 is connected to the top of the swing arm structure 1. An arc-shaped rod 501 is installed on the passenger ship that passes through the swing arm structure 1. The arc-shaped rod 501 is provided with a toothed groove 502. The swing arm structure 1 is provided with a swing arm locking device 5 that stops the rotation of the swing arm structure 1 by engaging with the toothed groove 502.

[0040] The lifting cable 303 and lifting cable 304 installed on the lifting drive device 3 are both connected to the lifeboat through the transmission wheel 106 and transmission wheel 105 on the swing arm structure 1.

[0041] The working principle of this invention is as follows: When raising or lowering a lifeboat, the swing arm drive device 2 is first activated to drive the swing arm structure 1 to rotate. The rotation of the swing arm structure 1 is to allow the lifeboat to be stored on or transferred from the passenger ship to the outside of the passenger ship. During this process, the function of the swing arm locking device 5 is that when the lifting cable 203 of the traction swing arm structure 1 is disconnected from the swing arm structure 1, the swing arm locking device 5 can immediately engage with the tooth groove 502 on the arc rod 501 to stop the swing arm structure 1 from rotating and falling. When the lifting drive device 3 is activated, it can lift the lifeboat in the water or lower the lifeboat located outside the passenger ship to the water. During this process, the anti-sway structure 4 can extend and retract with the lifting cable 303 and the lifting cable 304. When the swing arm structure 1 rotates, the sleeve assembly 403 will always be in a vertical state. At this time, the sleeve assembly 403 can greatly improve the stability of the lifeboat during the movement by suppressing the swaying of the lifting cable 303 and the lifting cable 304.

[0042] Combined with appendix Figure 1 Appendix Figure 2 Appendix Figure 3 Appendix Figure 4 Appendix Figure 7 Appendix Figure 8 Appendix Figure 9 As shown:

[0043] The swing arm drive device 2 includes a drive box 201 and a winding roller 202. The drive box 201 can drive the winding roller 202 to perform winding and releasing work on the lifting cable 203.

[0044] A slot 109 is provided at the position where the arc-shaped rod 501 passes through the swing arm body 102. A partition 110 is provided inside the slot 109, and a sliding block 503 is slidably inserted into the partition 110. One end of the sliding block 503 is provided with a toothed block 504 that engages with the toothed groove 502, and the other end of the sliding block 503 is provided with a force-bearing plate 511. A spring 512 is provided between the force-bearing plate 511 and the inner wall of the slot 109. The sliding block 503 is located below the partition 110. A slide groove 505 is provided, and a limiting slider 506 is slidably provided in the slide groove 505. The top of the part of the limiting slider 506 extending out of the slide groove 505 abuts against the partition plate 110. A limiting block 507 is provided at the top of the limiting slider 506. A spring 509 is provided between the inner wall of the slide groove 505 and the limiting slider 506. A pull wire 508 that can drive the limiting slider 506 to move in the slide groove 505 is connected between the limiting slider 506 and the lifting cable 203.

[0045] One end of the pull cable 508 is located inside the spring 509 and passes through the sliding block 503. The sliding block 503 is provided with an auxiliary pulley 510 connected to the pull cable 508. The pull cable 508 passes through the swing arm body 102 and is connected to the lifting cable 203. The swing arm body 102 is provided with an extension plate 111. Between the two extension plates 111, there is a redirection auxiliary rod 112 that abuts against the lifting cable 203. The lifting cable 203 is fixedly connected to the force rod 103. The connection point between the pull cable 508 and the lifting cable 203 is located between the redirection auxiliary rod 112 and the force rod 103.

[0046] In order to prevent the swing arm structure 1 from falling uncontrollably due to the disconnection of the lifting cable 203 during the rotation of the lifeboat when it is released or retrieved, the present invention provides a swing arm locking device 5.

[0047] When the swing arm structure 1 is driven to move, the lifting cable 203 is fixedly connected to the force-bearing rod 103. Since a redirecting auxiliary rod 112 is provided between the two extension plates 111 to abut against the lifting cable 203, the angle between the portion of the lifting cable 203 located between the redirecting auxiliary rod 112 and the force-bearing rod 103 and the swing arm body 102 is fixed. That is, the distance between a point of the lifting cable 203 located between the redirecting auxiliary rod 112 and the force-bearing rod 103 and the slot 109 remains unchanged. Furthermore, since the connection point between the pull wire 508 and the lifting cable 203 is located between the redirecting auxiliary rod 112 and the force-bearing rod 103, when the lifting cable 203 is not disconnected, the lifting cable 203 generates a continuous and stable tension on the pull wire 508. Specifically:

[0048] The pull wire 508 pulls the limiting slider 506 to move completely into the slide groove 505. Since the pull wire 508 exerts an upward pulling force on the sliding block 503 through the limiting slider 506, the pull wire 508 pulls the sliding block 503 upward, causing the toothed block 504 to disengage from the toothed groove 502. Both the first spring 509 and the second spring 512 are in a compressed state. At this time, the swing arm body 102 and the arc rod 501 can slide.

[0049] When the lifting cable 203 breaks, the tension on the pull cable 508 caused by the lifting cable 203 decreases from extremely strong to weak and eventually approaches zero. This process occurs when the lifting cable 203 snaps and springs upward due to the breaking force. At this time, the pull cable 508 experiences extremely strong tension. Because the time between the breaking force and its disappearance is extremely short, if the pull cable 508 does not break when subjected to the breaking force, the tension on the pull cable 508 caused by the lifting cable 203 will decrease or disappear after the breaking force ends. If the pull cable 508 breaks when subjected to the breaking force, the tension on the pull cable 508 caused by the lifting cable 203 will disappear. At this time, the sliding block 503, under the action of the spring 512, drives the toothed block 504 to engage with the toothed groove 502. When the limiting slider 506 is below the partition 110, one end of the limiting slider 506... Under the action of spring 509, the sliding block 503 is limited by extending from the groove 505. Specifically, when the toothed block 504 and the toothed groove 502 are engaged, the impact force caused by the uncontrolled fall of the swing arm structure 1 will cause the toothed block 504 and the toothed groove 502 to be unable to be stably engaged and will spring away. At this time, the limiting slider 506 can extend from the groove 505 at the instant the toothed block 504 and the toothed groove 502 are engaged. The limiting slider 506 located outside the groove 505 can abut against the partition 110. At this time, if the toothed block 504 and the toothed groove 502 have a tendency to spring away, they can not spring away under the action of the limiting slider 506 abutting against the partition 110. That is, the toothed block 504 and the toothed groove 502 can be stably engaged. The swing arm body 102 stops falling uncontrollably under the action of the toothed block 504 and the toothed groove 502.

[0050] The specific embodiment of the connection between the pull cable 508 and the lifting cable 203 is as follows: The top of the pull cable 508 is provided with a locking ring that is sleeved on the outside of the lifting cable 203. The locking ring and the lifting cable 203 are slidably connected. When the lifting cable 203 is in a taut state due to tension, the lifting cable 203 can then exert an upward pulling force on the pull cable 508 and pull it a certain distance to compress the spring 509 and the spring 512. When the lifting cable 203 breaks, the locking ring can slide on the lifting cable 203 to relieve part of the breaking force. At this time, the probability of the pull cable 508 breaking when the lifting cable 203 breaks will be reduced.

[0051] Combined with appendix Figure 1 Appendix Figure 2 Appendix Figure 3 Appendix Figure 4 Appendix Figure 5 As shown:

[0052] The lifting drive device 3 includes a second drive box 301 and a second winding roller 302. The second drive box 301 can drive the second winding roller 302 to simultaneously wind and release the second lifting cable 303 and the third lifting cable 304.

[0053] The swing arm structure 1 includes a rotating shaft 101 that is rotatably connected to the passenger ship. Both ends of the rotating shaft 101 are fixedly connected to the swing arm body 102. Between the two swing arm bodies 102, there is a first force-bearing rod 103 and a second force-bearing rod 108. The first force-bearing rod 103 is located at the top of the swing arm body 102.

[0054] The anti-sway structure 4 includes two sets of anti-sway devices. Both sets of anti-sway devices include a connecting gear 407 sleeved outside the force rod 103. Both ends of the connecting gear 407 are fixedly connected to a sleeve 401 sleeved outside the force rod 103. The sleeve 401 is fixedly connected to the sleeve assembly 403 through a connector 402. When the rotating shaft 101 rotates, it can drive the connecting gear 407 to rotate in the opposite direction relative to the swing arm body 102 at the same angle.

[0055] A reinforcing rod 104 is provided between the first force-bearing rod 103 and the second force-bearing rod 108. A fixing rod is provided between the first reinforcing rod 104 and the swing arm body 102. A gear fixing plate 408 is provided between the fixing rod and the first force-bearing rod 103. A transmission gear 409 that meshes with the connecting gear 407 is provided on the gear fixing plate 408. A reinforcing rod 107 is provided between the second force-bearing rod 108 and the rotating shaft 101. A transmission gear 410 is provided on the second reinforcing rod 107. A fixing gear 412 that is fixed to the passenger ship and meshes with the transmission gear 410 is sleeved on the rotating shaft 101. The first transmission gear 409 and the second transmission gear 410 are connected by a toothed belt 411.

[0056] Both transmission gear 1 409 and transmission gear 2 410 are composed of gear 1 and two gear 2. The two gear 2 are located on both sides of gear 1. Gear 2 meshes with connecting gear 407 or fixed gear 412. Gear 1 meshes with toothed belt 411.

[0057] When the swing arm structure 1 rotates to one side, the anti-sway structure 4 works and drives the connecting gear 407 to make the sleeve assembly 403 rotate around the axis of the sleeve 401 to the other side at the same angle as the swing arm structure 1. At this time, the sleeve assembly 403 is still in a vertical state.

[0058] To ensure the lifeboat remains stable during the lifting and lowering process of the lifting drive device 3, an anti-sway structure 4 is installed. In existing technology, because the lifeboat is only suspended by cables during the rotation of the swing arm structure 1, inertia can cause the lifeboat to sway. This swaying can accelerate the wear and tear of the cables and even cause them to break, greatly affecting the safety of passengers. The specific working process of the anti-sway structure 4 is as follows:

[0059] Before rotation, the sleeve assembly 403 of the swing arm structure 1 is in a vertical state. During rotation, if the sleeve assembly 403 needs to remain vertical, the rotation angles of the swing arm structure 1 and the connecting gear 407 must be equal and their rotation directions opposite. Since the rotating shaft 101 is fitted with a fixed gear 412 that is fixed to the passenger ship and meshes with the second transmission gear 410, the second transmission gear 410 can roll around the fixed gear 412. That is, the second transmission gear 410 also rotates on its own axis while rotating around the axis of the fixed gear 412. In this invention, the diameters of the second transmission gear 410 and the fixed gear 412 are equal, and the diameters of the second transmission gear 410 and the first transmission gear 409 are equal. At this time, the rotation angle of the first transmission gear 409 relative to the swing arm structure 1 is equal to its revolution angle around the fixed gear 412, and the rotation direction of the first transmission gear 409 is also equal to the rotation angle of the swing arm structure 1. Since the connecting gear 407 meshes with the transmission gear 409, the connecting gear 407 rotates in the opposite direction to the swing arm structure 1. If the rotation angle of the connecting gear 407 is required to be equal to the rotation angle of the swing arm structure 1, the diameters of the connecting gear 407 and the transmission gear 409 must be equal. During the rotation of the swing arm structure 1, the connecting gear 407 can drive the sleeve assembly 403 to rotate in the opposite direction by the same angle so that the sleeve assembly 403 is always in a vertical state. In specific implementation, the sleeve assembly 403 will only rotate when the swing arm structure 1 rotates due to the gear meshing. When the swing arm structure 1 stops rotating, the sleeve assembly 403 will also be in a stationary state. The stationary sleeve assembly 403 can greatly reduce the swaying amplitude caused by inertia when the lifeboat is moved by the swing arm structure 1 by limiting the swing of the lifting rope.

[0060] Combined with appendix Figure 1 Appendix Figure 2 Appendix Figure 3 Appendix Figure 4 Appendix Figure 5 Appendix Figure 10 Appendix Figure 11 As shown:

[0061] A base block 305 is provided at the part where the lifting cable 2 303 and the lifting cable 3 304 pass through the sleeve assembly 403. The sleeve assembly 403 includes a fixed sleeve 404 that is fixedly connected to the connector 402. Several retractable sliding sleeves 405 are provided inside the fixed sleeve 404. The bottom end of the innermost sliding sleeve 405 is fixedly connected to the base block 305. The base block 305 is connected to the lifeboat by a connecting cable 306.

[0062] The fixed sleeve 404 and several sliding sleeves 405 are positioned in pairs by a limiting slide rod 406 at the bottom of the inner sleeve being inserted into the outer sleeve. The limiting stop provided at the top of the limiting slide rod 406 can prevent the inner sleeve from separating from the outer sleeve.

[0063] When raising or lowering the lifeboat, the lifting drive device 3 releases or retracts lifting cables 2 303 and 304 to raise or lower the lifeboat. During the process, when the lifeboat is released, lifting cables 2 303 and 304 move the lifeboat downward. Since the bottom end of the innermost sliding sleeve 405 is fixed to the bottom block 305, several sliding sleeves 405 inside the fixed sleeve 404 will extend one by one. When the lifeboat falls to the water, the sliding sleeves 405 stop extending. Since the sleeve assembly 403 is in a vertical state, the fixed sleeve 404 and several sliding sleeves 405 in the extended state will suppress the shaking of lifting cables 2 303 and 304, thereby stabilizing the downward movement of the lifeboat.

[0064] Combined with appendix Figure 1 Appendix Figure 2 Appendix Figure 4 Appendix Figure 5 Appendix Figure 6 As shown:

[0065] The reinforcing rod 2 107 is provided with an anti-tooth-detachment structure 6 that can press the toothed belt 411. The anti-tooth-detachment structure 6 includes a fixing plate 601 fixed to the top of the reinforcing rod 2 107. A sliding rod 602 is slidably inserted into the fixing plate 601. One end of the sliding rod 602 is provided with a pressure plate 603. The end of the pressure plate 603 is provided with a roller 606 that is slidably connected to the toothed belt 411. Both sides are provided with guard plates 607 that are slidably connected to the toothed belt 411. A spring 3 604 located between the fixing plate 601 and the pressure plate 603 is sleeved on the sliding rod 602. The other end of the sliding rod 602 is provided with a limiting block 2 605.

[0066] The anti-tooth-detachment structure 6 is mainly used to detect the tension of the toothed belt 411 and to keep the toothed belt 411 in a taut state. In specific implementation, a scale layer representing the tension of the toothed belt 411 can be set on the surface of the sliding rod 602. When the tension of the toothed belt 411 is sufficient, that is, the squeezing force on the spring 604 is large, the compression degree of the spring 604 is large, and the scale value is high. When the tension of the toothed belt 411 is insufficient, the squeezing force on the spring 604 is small, that is, the scale value is low. The operator can judge whether the toothed belt 411 needs to be replaced by the scale value. When the tension of the toothed belt 411 is insufficient, the spring 604 will also apply pressure to the toothed belt 411 through the relative force, which can reduce the probability of tooth detachment when the tension of the toothed belt 411 is insufficient, and to a certain extent ensure the stable operation of the anti-sway structure 4.

[0067] In a specific implementation of this invention, when the swing arm structure 1 rotates, the connecting gear 407 rotates in the opposite direction by the same angle, thereby keeping the sleeve assembly 403 vertical at all times. The fixed sleeve 404 of the sleeve assembly 403 is equipped with a retractable sliding sleeve 405. The bottom end of the innermost sliding sleeve 405 is connected to the lifeboat via a base block 305 and a connecting cable 306. The drive box 301 of the lifting drive device 3 drives the winding roller 302 to simultaneously wind and release the lifting cable 303 and the lifting cable 304, thereby achieving the lifting and lowering of the lifeboat. During the lifting and lowering process, the sliding sleeves 405 extend or retract one by one to suppress the swaying of the lifting cables. When the lifting cable 203 is disconnected, the tension of the pull wire 508 on the limit slider 506 disappears, the spring 2 512 pushes the sliding block 503 to make the tooth block 504 engage with the tooth groove 502, and the spring 1 509 pushes the limit slider 506 to extend out of the slide groove 505 to limit it, preventing the swing arm from falling out of control; in the anti-tooth dislodging structure 6 at the top of the reinforcing rod 2 107, the pressure plate 603 on the sliding rod 602 is connected to the toothed belt 411 by the roller 606, the spring 3 604 keeps the toothed belt 411 taut, and the scale layer on the surface of the sliding rod 602 can show the tightness of the toothed belt 411, making it easy to determine whether the toothed belt 411 needs to be replaced.

[0068] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A lifeboat lifting device for passenger ships, comprising a swing arm structure (1), a swing arm drive device (2), and a lifting drive device (3) installed on a passenger ship, wherein a lifting rope installed on the lifting drive device (3) is connected to the lifeboat through the swing arm structure (1), characterized in that: The swing arm structure (1) is provided with an anti-sway structure (4) that can keep the lifting rope stable during operation by rotating with the swing arm structure (1). The anti-sway structure (4) includes a sleeve assembly (403) that is set vertically and can follow the lifting rope to complete the extension and retraction work. The lifting cable (203) set on the swing arm drive device (2) is connected to the top of the swing arm structure (1). The passenger ship is provided with an arc rod (501) that passes through the swing arm structure (1). The arc rod (501) is provided with a tooth groove (502). The swing arm structure (1) is provided with a swing arm locking device (5) that stops the swing arm structure (1) from rotating by engaging with the tooth groove (502). The swing arm structure (1) includes a rotating shaft (101) that is rotatably connected to the passenger ship. Both ends of the rotating shaft (101) are fixedly connected to the swing arm body (102). A force-bearing rod one (103) and a force-bearing rod two (108) are provided between the two swing arm bodies (102). The force-bearing rod one (103) is located at the top of the swing arm body (102). The anti-sway structure (4) includes two sets of anti-sway devices. Both sets of anti-sway devices include a connecting gear (407) sleeved outside the force rod (103). Both ends of the connecting gear (407) are fixedly connected to a sleeve (401) sleeved outside the force rod (103). The sleeve (401) is fixedly connected to the sleeve assembly (403) through a connector (402). When the rotating shaft (101) rotates, it can drive the connecting gear (407) to rotate in the opposite direction relative to the swing arm body (102) at the same angle. A reinforcing rod 1 (104) is provided between the first force-bearing rod (103) and the second force-bearing rod (108). A fixing rod is provided between the first reinforcing rod (104) and the swing arm body (102). A gear fixing plate (408) is provided between the fixing rod and the first force-bearing rod (103). A transmission gear 1 (409) is provided on the gear fixing plate (408) and meshes with the connecting gear (407). A reinforcing rod 2 (107) is provided between the second force-bearing rod (108) and the rotating shaft (101). A transmission gear 2 (410) is provided on the reinforcing rod 2 (107). A fixing gear (412) is fixed to the passenger ship and meshes with the transmission gear 2 (410) on the rotating shaft (101). The first transmission gear (409) and the second transmission gear (410) are connected by a toothed belt (411).

2. The lifeboat lifting device for passenger ships according to claim 1, characterized in that: Both transmission gear one (409) and transmission gear two (410) are composed of gear one and two gear two. The two gear two are located on both sides of gear one. Gear two meshes with connecting gear (407) or fixed gear (412), and gear one meshes with toothed belt (411).

3. The lifeboat lifting device for passenger ships according to claim 1, characterized in that: A base block (305) is provided where the lifting rope passes through the sleeve assembly (403). The sleeve assembly (403) includes a fixed sleeve (404) that is fixedly connected to the connector (402). The fixed sleeve (404) has several retractable sliding sleeves (405). The bottom end of the innermost sliding sleeve (405) is fixedly connected to the base block (305). The base block (305) is connected to the lifeboat by a connecting cable (306).

4. The lifeboat lifting device for passenger ships according to claim 1, characterized in that: The reinforcing rod 2 (107) is provided with an anti-tooth-loosening structure (6) that can press the toothed belt (411). The anti-tooth-loosening structure (6) includes a fixing plate (601) fixed to the top of the reinforcing rod 2 (107). A sliding rod (602) is slidably inserted into the fixing plate (601). A pressure plate (603) is provided at one end of the sliding rod (602). A roller (606) that is slidably connected to the toothed belt (411) is provided at the end of the pressure plate (603). Protective plates (607) that are slidably connected to the toothed belt (411) are provided on both sides. A spring 3 (604) located between the fixing plate (601) and the pressure plate (603) is sleeved on the sliding rod (602). A limiting block 2 (605) is provided at the other end of the sliding rod (602).

5. The lifeboat lifting device for passenger ships according to claim 1, characterized in that: The swing arm body (102) has a slot (109) at the position where the arc rod (501) passes through. A partition (110) is provided in the slot (109). A sliding block (503) is slidably inserted on the partition (110). One end of the sliding block (503) is provided with a tooth block (504) that engages with the tooth groove (502). The other end of the sliding block (503) is provided with a force plate (511). A second spring (512) is provided between the force plate (511) and the inner wall of the slot (109). The sliding block (503) is located below the partition (110). A chute (505) is provided at the location, and a limiting slider (506) is slidably provided in the chute (505). The top of the part of the limiting slider (506) extending out of the chute (505) abuts against the partition (110). A limiting block (507) is provided at the top of the limiting slider (506). A spring (509) is provided between the inner wall of the chute (505) and the limiting slider (506). A pull wire (508) that can drive the limiting slider (506) to move in the chute (505) is connected between the limiting slider (506) and the lifting cable (203).

6. The lifeboat lifting device for passenger ships according to claim 5, characterized in that: One end of the pull wire (508) is located inside the spring (509) and passes through the sliding block (503). The sliding block (503) is provided with an auxiliary pulley (510) connected to the pull wire (508). The pull wire (508) passes through the swing arm body (102) and is connected to the lifting cable (203). The swing arm body (102) is provided with an extension plate (111). Between the two extension plates (111) is a redirection auxiliary rod (112) that abuts against the lifting cable (203). The lifting cable (203) is fixedly connected to the force rod (103). The connection between the pull wire (508) and the lifting cable (203) is located between the redirection auxiliary rod (112) and the force rod (103).

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