A boat-mounted dinghy launching and recovery device

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By integrating the bottom power wheel set, side guide wheels, and one-way locking wheels into the stern of the vessel, along with rubber anti-collision pads and distance sensors, the problem of unsuitability for launching and retrieving small boats on smaller vessels has been solved, enabling fast and safe launching and retrieving operations that comply with maritime safety regulations.

CN224528930UActive Publication Date: 2026-07-21SANDIANSHUI NEW ENERGY TECHNOLOGY (HUBEI) CO LTD

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Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner: SANDIANSHUI NEW ENERGY TECHNOLOGY (HUBEI) CO LTD
Filing Date: 2025-10-11
Publication Date: 2026-07-21

AI Technical Summary

Technical Problem

Existing boat launching and launching devices are not suitable for smaller vessels, as they affect deck space and are unsafe, especially for sightseeing boats, fishery administration and maritime surveillance vessels, and small construction vessels. Existing devices are cumbersome to operate, slow, and do not comply with maritime safety regulations.

Method used

Design a shipboard trough area integrated into the middle of the stern of a vessel, equipped with a bottom power wheel set, side guide wheels and one-way locking wheels, combined with rubber anti-collision pads and distance sensors to achieve stable launching and safe locking of the small boat, and realize automatic control through an electronic control system.

Benefits of technology

It enables the rapid and safe deployment and retrieval of small boats, complies with maritime safety regulations, avoids deck space occupation and safety hazards, and improves operational efficiency and safety.

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Abstract

The utility model discloses a shipborne dinghy retraction device relates to ship equipment technical field, including bottom bracket, bottom power wheel group, two groups of side guide wheels and one way locking wheel, and the bottom bracket is formed with the shipborne groove area for accommodating the boat between the ship stern, and the front side of shipborne groove area is located on the side wall of bottom bracket and is installed with the anticollision protective pad, and the front end of boat is provided with the safety line of traction, and the upper end of bottom bracket is provided with the fixed rope pile of convenient safety line fixed, the device is integrated in the shipborne groove area in the middle part of ship stern, does not need to occupy the deck of ship stern, does not influence the normal activity of deck, adapts the characteristics of small tonnage ship deck narrow, also avoids the unsafe factor of the rope towed dinghy to appear, improves safe operation, through the cooperation of bottom power wheel group and side guide wheel, can complete retraction in short time, avoids the security risk of the rope towed.

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Description

Technical Field

[0001] This utility model relates to the field of marine equipment technology, and in particular to a shipborne small boat launching and launching device. Background Technology

[0002] According to maritime navigation safety regulations, ships must carry small boats. Small boats are an essential lifesaving and transportation configuration. Existing small boat launching and recovering devices mainly include hoisting type and stern slipway type. Many smaller vessels, especially some inland waterway vessels, such as sightseeing boats, fishery administration and maritime surveillance vessels, and small construction vessels, have narrow decks and low hulls. Using hoisting type and stern slipway type for launching and recovering small boats has always been unsatisfactory. For example, hoisting type is cumbersome, slow, and not safe enough. Using stern slipway type will inevitably affect and obstruct the observation line of sight and occupy the limited deck space, which is also unsuitable. Therefore, the above-mentioned vessels still often use towing small boats with ropes, but this method is unsafe and does not comply with regulations.

[0003] To address the aforementioned problems, this utility model provides a device for launching and retrieving small boats. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a shipborne small boat launching and launching device, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a boat launching and launching device, including a bottom bracket fixed to the middle of the stern of a vessel, a boat-mounted trough area for accommodating the boat is formed between the bottom bracket and the stern of the vessel, and a bottom power wheel set is installed at the upper end of the bottom bracket in the boat-mounted trough area.

[0006] Two sets of side guide wheels are symmetrically installed on both sides of the ship-mounted tank area. Each set of side guide wheels has a one-way locking wheel at the tail end for locking the stored boat.

[0007] Anti-collision pads are installed on the front side of the ship's tank area on the side wall of the bottom bracket. A towing safety rope is installed at the front of the boat, and a fixing stake is installed at the upper end of the bottom bracket to facilitate the fixing of the towing safety rope.

[0008] As a further technical solution of this utility model, each group of side guide wheels is provided with at least six, and the side guide wheels include a roller bracket and a roller 1 installed on the side wall of the bottom bracket, and the roller 1 is rotatably mounted on the roller bracket.

[0009] As a further technical solution of this utility model, the bottom power wheel set includes multiple rows of rollers that drive each other. Each pair of adjacent rollers is driven by a belt or chain, and one of the rollers in each row is connected to a drive motor that can provide power.

[0010] As a further technical solution of this utility model, the second roller is made of polyurethane.

[0011] As a further technical solution of this utility model, a rotating rod is connected to the one-way locking wheel, and the one-way locking wheel and the rotating rod are rotatably connected. The other end of the rotating rod is rotatably connected to a fixed seat. A locking motor is also installed on the side wall of the bottom bracket, and the output end of the locking motor is fixed to the other end of the rotating rod. The locking motor drives the rotating rod to rotate 90 degrees on the fixed seat.

[0012] As a further technical solution of this utility model, the two side walls of the boat are provided with outer plate grooves corresponding to the two one-way locking wheels. When the one-way locking wheels rotate to a right angle with the inner wall of the boat-mounted groove area, they are exactly in the outer plate grooves, which are used to lock the boat after it is stored.

[0013] As a further technical solution of this utility model, an electrical control box is also installed on the upper end of the bottom bracket, and the electrical control box is electrically connected to the ship's monitoring room.

[0014] As a further technical solution of this utility model, the anti-collision pad is made of rubber, and a distance sensor is also installed on one side of the anti-collision pad.

[0015] This utility model provides a shipborne small boat launching and launching device, which has the following advantages compared with the prior art:

[0016] 1. This design provides a shipborne small boat launching and launching device. The device is integrated into the shipborne trough area in the middle of the stern end of the ship. It does not occupy the stern deck of the ship and does not affect the normal activities on the deck. It is suitable for the narrow deck of small tonnage ships and avoids the unsafe factors of towing small boats with ropes, thus improving safe operation.

[0017] 2. The boat launching and retrieval device designed in this paper can complete the launching and retrieval in a short time by cooperating with the bottom power wheel set and the side guide wheel, avoiding the safety hazards of towing with a rope and complying with maritime safety regulations. In addition, the one-way locking wheel is mechanically locked to the groove of the boat's outer plate, and with the secondary fixation of the traction safety rope, the stability of the boat after being stored is doubly guaranteed, preventing the boat from shifting when the ship rocks.

[0018] 3. The boat launching and retrieving device designed in this paper utilizes the combination of rubber anti-collision pads and distance sensors. It can not only effectively buffer the impact of collisions and reduce the risk of damage to the equipment and the boat, but also monitor the position of the boat in real time. When the boat is in place, it can automatically control the one-way locking wheel to lock it, thereby improving its stability. Attached Figure Description

[0019] Figure 1 This is a schematic diagram showing the position of the boat on the mother ship in this utility model;

[0020] Figure 2 This is a top view of the present invention;

[0021] Figure 3 This is a side view of the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of this utility model.

[0023] In the diagram: 1. Bottom bracket; 2. Anti-collision pad; 3. Side guide wheel; 4. One-way locking wheel; 41. Rotating rod; 42. Fixed seat; 5. Bottom drive wheel set; 6. Traction safety rope; 7. Fixed rope stake; 8. Boat; 9. Electrical control box. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-4 This utility model provides a technical solution for a boat-borne small boat launching and retrieving device: A boat-borne small boat launching and retrieving device includes a bottom bracket 1 fixed to the middle of the stern of a ship. A boat-borne groove area for accommodating a boat 8 is formed between the bottom bracket 1 and the stern of the ship. The groove area extends longitudinally along the ship and is adapted to the length of the small boat (i.e., boat 8). The device can be made according to the bottom shape of the small boat and can be flat or V-shaped to ensure a close fit with the bottom of the small boat. A bottom power wheel set 5 is installed at the upper end of the bottom bracket 1 in the boat-borne groove area. The bottom power wheel set 5 includes multiple rows of mutually driven rollers. The number of rows is adapted according to the width of the small boat. Each row of rollers has ≥3 rollers to ensure even support of the weight of the small boat. Each pair of adjacent rollers is driven by a belt or chain. One of the rollers in each row is connected to a drive motor that can provide power. The drive motor has a built-in reducer to achieve synchronous operation. The rollers are made of polyurethane material. Utilizing its high coefficient of friction, the friction with the bottom of the small boat is increased to prevent the small boat from slipping during launching and retrieving.

[0026] Two sets of side guide wheels 3 are symmetrically installed on both sides of the ship-borne tank area. Each set of side guide wheels 3 has at least six wheels, which are evenly distributed along the length of the ship-borne tank area. The side guide wheels 3 include a roller bracket and a roller 1 installed on the side wall of the bottom bracket 1. The roller 1 is rotatably mounted on the roller bracket. The side guide wheels 3 can guide and adjust the attitude of the boat 8 during the launching and launching operations to prevent the boat from deviating. During the launching operation, it does not affect the boat from sliding out.

[0027] Each set of side guide wheels 3 has a one-way locking wheel 4 at its tail end for locking the stored boat 8. The one-way locking wheel 4 is connected to a rotating rod 41, and the one-way locking wheel 4 and the rotating rod 41 are rotatably connected. The one-way locking wheel 4 can roll around its own axis. The other end of the rotating rod 41 is rotatably connected to a fixed seat 42, which is fixed to the side wall of the bottom bracket 1. The side wall of the bottom bracket 1 is also equipped with a locking motor, and the output end of the locking motor is fixed to the other end of the rotating rod 41. The locking motor drives the rotating rod 41 to rotate 90 degrees on the fixed seat 42. The two side walls of the boat 8 are provided with outer plate grooves corresponding to the two one-way locking wheels 4. The depth and width of the grooves are adapted to the diameter of the one-way locking wheel 4. When the one-way locking wheel 4 rotates to a right angle with the inner wall of the boat-mounted groove area, it is exactly in the outer plate groove, which is used for mechanical locking of the stored boat 8.

[0028] Anti-collision pads 2 are installed on the side wall of the bottom bracket 1 at the front of the ship-borne tank area. The anti-collision pads 2 are made of rubber with a thickness of ≥50mm. They are used to buffer the front impact force when the boat 8 is recovered. A distance sensor, such as an ultrasonic sensor, is also installed on one side of the anti-collision pads 2. It can monitor the distance between the boat 8 and the anti-collision pads 2 in real time to avoid excessive collisions. It can also facilitate the transmission of signals to the electrical control box 9 to control the locking operation of the one-way locking wheel 4.

[0029] The front of the boat 8 is equipped with a towing safety rope 6, which is made of high-strength nylon rope with a breaking tensile strength of ≥50kN. The upper end of the bottom bracket 1 is equipped with a fixing rope stake 7, which is made of metal and has anti-slip texture on the surface, to facilitate the fixing of the towing safety rope 6, serving as a secondary safety measure after the boat 8 is stored.

[0030] An electrical control box 9 is also installed on the upper end of the bottom bracket 1. The electrical control box 9 is fixed inside the rainproof protective shell on the upper end of the bottom bracket 1. The electrical control box 9 is electrically connected to the control system of the ship's monitoring room through a cable to complete the access of power and signal. It can receive control commands from the monitoring room, such as starting / stopping the bottom power wheel set, controlling the operation of the locking motor, and feeding back the working status of the device, such as the speed of the power wheel set, the locking status, and the distance sensor data. The electrical control box 9 contains a PLC controller, which facilitates the synchronous operation of multiple rows of bottom power wheel sets 5.

[0031] In addition, the device must meet the following operating conditions of the mother ship: speed ≤10km / h, roll ≤5 degrees, and trim ≤3 degrees. The operating conditions are monitored in real time by the ship's monitoring room, and the launching and retraction operations are automatically prohibited if the conditions are not met.

[0032] The working principle of this utility model is as follows: During the recovery of the boat 8, the boat is adjusted to the working condition (speed ≤10km / h, roll ≤5 degrees, pitch ≤3 degrees), the ship monitoring room sends a recovery start command, controls the drive motor of the bottom power wheel set 5 to start, and drives the roller two to rotate synchronously (rotation direction towards the inside of the ship).

[0033] Under the guidance of the wake of the mother ship, the boat 8 approaches the ship-borne tank area. The bottom of the boat 8 contacts the polyurethane roller 2 of the bottom power wheel set 5. The roller 2 drives the boat 8 to slide towards the inside of the ship-borne tank area through high friction. During the recovery process, the side guide wheel 3 rolls into contact with the side wall of the boat 8, correcting the boat 8's deviation in real time and ensuring that the boat 8 moves stably along the ship-borne tank area.

[0034] When the front of the boat 8 approaches the anti-collision pad 2, the distance sensor detects that the distance of the boat 8 has reached the standard and sends an approach signal to the ship monitoring room. Then the monitoring room sends a locking command to control the locking motor of the one-way locking wheel 4 to start, drive the rotating rod 41 to rotate 90 degrees around the fixed seat 42, so that the one-way locking wheel 4 is embedded in the groove of the outer plate on both sides of the boat 8, and completes the mechanical locking of the boat 8.

[0035] Furthermore, the bottom power wheel assembly 5 stops operating, and the on-site staff re-secure the towing safety rope 6 at the front of the boat 8 to the fixed rope stake 7. After checking that the locking status of the one-way locking wheel 4 is correct, they report to the ship monitoring room that the recovery is complete, and the entire recovery process ends.

[0036] During the release of boat 8, the monitoring room sends a release command, and the electrical control box 9 controls the locking motor of the one-way locking wheel 4 to start, driving the rotating rod 41 to rotate 90 degrees around the fixed seat 42 to reset, so that the one-way locking wheel 4 moves out of the grooves on the outer plates of both sides of boat 8, thus completing the release of the mechanical lock of boat 8.

[0037] Furthermore, the on-site staff untied the fixed connection between the towing safety rope 6 at the front of the boat 8 and the fixed rope stake 7. The ship monitoring room sent a release start command through the electrical control box 9 to control the drive motor of the bottom power wheel set 5 to start, driving the multiple rows of rollers to rotate synchronously (the rotation direction is towards the outside of the ship).

[0038] Driven by the bottom power wheel set 5, the boat 8 slides smoothly outward along the ship's trough area, with the side guide wheel 3 assisting in maintaining the boat 8's directional stability until the boat 8 completely slides into the water.

[0039] Then, after the ship's monitoring room confirms through video monitoring or on-site feedback that the boat 8 has detached from the device, it sends a stop command, the bottom power wheel assembly 5 stops operating, and the release of the boat 8 is completed.

[0040] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model are implemented according to conventional methods in the art, unless otherwise specified or limited.

Claims

1. A boat-borne small boat launching and retrieving device, comprising a bottom bracket (1) fixed to the middle of the stern end of a vessel, characterized in that, A shipboard trough area for accommodating a boat (8) is formed between the bottom bracket (1) and the stern of the vessel. A bottom power wheel set (5) is installed at the upper end of the bottom bracket (1) in the shipboard trough area. Two sets of side guide wheels (3) are symmetrically installed on both sides of the ship-borne tank area. Each set of side guide wheels (3) has a one-way locking wheel (4) at the tail end for locking the stored boat (8). The front side of the ship-borne tank area is equipped with a collision protection pad (2) on the side wall of the bottom bracket (1). The front end of the boat (8) is provided with a towing safety rope (6). The upper end of the bottom bracket (1) is provided with a fixing rope stake (7) to facilitate the fixing of the towing safety rope (6).

2. The boat launching and retrieving device according to claim 1, characterized in that, Each set of the side guide wheels (3) is provided with at least six, and the side guide wheels (3) include a roller bracket and a roller one installed on the side wall of the bottom bracket (1), and the roller one is rotatably mounted on the roller bracket.

3. The boat launching and retrieving device according to claim 1, characterized in that, The bottom power wheel assembly (5) includes multiple rows of rollers that drive each other. Each pair of adjacent rollers is driven by a belt or chain, and one of the rollers in each row is connected to a drive motor that can provide power.

4. The boat launching and retrieving device according to claim 3, characterized in that, The second roller is made of polyurethane.

5. A boat-borne launch and recovery device according to claim 1, characterized in that, The one-way locking wheel (4) is connected to a rotating rod (41), and the one-way locking wheel (4) and the rotating rod (41) are rotatably connected. The other end of the rotating rod (41) is rotatably connected to a fixed seat (42). The side wall of the bottom bracket (1) is also equipped with a locking motor, and the output end of the locking motor is fixed to the other end of the rotating rod (41). The locking motor drives the rotating rod (41) to rotate ninety degrees on the fixed seat (42).

6. The boat launching and retrieving device according to claim 1, characterized in that, The two sides of the boat (8) are provided with outer plate grooves corresponding to the two one-way locking wheels (4). When the one-way locking wheel (4) rotates to a right angle with the inner wall of the ship's loading area, it is exactly in the outer plate groove, which is used to lock the boat (8) after it is stored.

7. The boat launching and retrieving device according to claim 1, characterized in that, An electrical control box (9) is also installed on the upper end of the bottom bracket (1), and the electrical control box (9) is electrically connected to the ship's monitoring room.

8. A boat-borne launching and recovering device according to claim 1, characterized in that, The anti-collision pad (2) is made of rubber, and a distance sensor is also installed on one side of the anti-collision pad (2).