Lifeboat rope deployment structure

Abstract

The utility model discloses a lifeboat rope winding and unwinding structure, including main rotating arm, support arm, connecting cross arm, steel wire rope cable, support arm fixed connection is in the top of main rotating arm, and the center of connecting cross arm is fixedly connected with the other end of support arm, and the both ends of connecting cross arm are equipped with the limit ring, and the limit ring is equipped with the main pulley, and the symmetric reinforcement rib is equipped between connecting cross arm and support arm, and a group of auxiliary pulleys are equipped on connecting cross arm and reinforcement rib, and the junction of reinforcement rib and connecting cross arm, the junction of reinforcement rib and support arm are equipped with the deflection pulley, and the steel wire rope cable is connected through auxiliary pulley, deflection pulley and main pulley and is extended downward after passing through the limit ring and is connected with lifeboat. The utility model discloses a group of rotating arm and the combination of connecting cross arm, hoist lifeboat, and the structure is more simple, and the use is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of shipbuilding, and in particular to a lifeboat rope deployment and retrieval structure. Background Technology

[0002] In existing technologies, lifeboat deployment and retrieval structures employ two sets of independent rotating arms symmetrically arranged to improve lifting stability, with two sets of ropes connecting the two sides of the lifeboat for lifting. While this type of structure can balance the force to some extent, it is complex, the two sets of arms occupy a large space, and operational flexibility is limited in confined areas such as the ship's deck; at the same time, the pulleys lack anti-derailment limits, and there is still a possibility of rope derailment, so the stability of deployment and retrieval needs to be improved. Utility Model Content

[0003] The purpose of this invention is to provide a rope deployment and retrieval structure for a lifeboat with single-arm support.

[0004] The purpose of this utility model is achieved as follows: a lifeboat rope deployment and retraction structure includes a main rotating arm, a support arm, a connecting cross arm, and a steel wire rope; the support arm is fixedly connected to the top of the main rotating arm, and the center of the connecting cross arm is fixedly connected to the other end of the support arm; the connecting cross arm has limiting rings at both ends, and a main pulley is provided inside the limiting ring; symmetrical reinforcing ribs are provided between the connecting cross arm and the support arm, and a set of auxiliary pulleys is provided on the connecting cross arm and the reinforcing ribs; steering pulleys are provided at the junction of the reinforcing ribs and the connecting cross arm, and at the junction of the reinforcing ribs and the support arm; the steel wire rope is connected to the main pulleys through the auxiliary pulleys and the steering pulleys, passes through the limiting rings, and extends downwards to connect with the lifeboat.

[0005] Preferably, the ends of the two sets of steel wire ropes passing through the limiting ring are connected to a crossbar, and a hoisting sling is provided below the crossbar to connect and fix it to the lifeboat.

[0006] Preferably, the main pulley is composed of a rotating shaft and a pulley, the rotating shaft is placed inside the limiting ring, the pulley is recessed in the middle, and the pulley is provided with protruding extension plates on both sides, with a small gap between the extension plates and the inner wall of the limiting ring; the limiting ring is square in shape.

[0007] Preferably, a guide tube is provided in front of the auxiliary pulley. The guide tube is a through-tube structure, and the openings at both ends of the guide tube are turned outward to form arc-shaped rolled edges.

[0008] Compared with the prior art, the advantages of this utility model are:

[0009] 1. This utility model adopts a combination of a set of rotating arms and a connecting cross arm, replacing the traditional two sets of rotating arms, which simplifies the structure and makes it more practical;

[0010] 2. This utility model uses a guide tube for guidance, an auxiliary pulley, and a steering pulley for multi-node direction changing to prevent the cable from derailing and further ensure smooth winding and unwinding; Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0012] Figure 2 This is a top view of the support arm and connecting cross arm of this utility model.

[0013] Figure 3 This is a schematic diagram of the structure of the guide tube of this utility model.

[0014] Among them, 1 is the main rotating arm, 2 is the support arm, 3 is the connecting cross arm, 4 is the wire rope, 5 is the limiting ring, 6 is the main pulley, 601 is the rotating shaft, 602 is the pulley, 6021 is the extension plate, 7 is the reinforcing rib, 8 is the auxiliary pulley, 9 is the steering pulley, 10 is the lifeboat, 11 is the crossbar, 12 is the hoisting sling, 13 is the guide cylinder, and 1301 is the arc-shaped rolled edge. Detailed Implementation

[0015] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0016] It should be noted that in the description of this utility model, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. These terms are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. The terms "horizontal," "vertical," and "suspended," etc., do not indicate that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0017] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] like Figure 1-3 As shown, a lifeboat rope deployment and retrieval structure includes a main rotating arm 1, a support arm 2, a connecting cross arm 3, and a steel wire rope 4. The support arm 2 is fixedly connected to the top of the main rotating arm, and the center of the connecting cross arm 3 is fixedly connected to the other end of the support arm 2. Limiting rings 5 ​​are provided at both ends of the connecting cross arm 3, and main pulleys 6 are provided inside the limiting rings 5. Reinforcing ribs 7 are symmetrically provided between the connecting cross arm 3 and the support arm 2. A set of auxiliary pulleys 8 are provided on the connecting cross arm 3 and the reinforcing ribs 7. Steering pulleys 9 are provided at the junction of the reinforcing ribs 7 and the connecting cross arm 3, and at the junction of the reinforcing ribs 7 and the support arm 2. The steel wire rope 4 is connected to the main pulleys 6 through the auxiliary pulleys 8 and the steering pulleys 9, passes through the limiting rings 5, and extends downward to connect with the lifeboat 10.

[0019] like Figure 1 As shown, the ends of the two sets of steel wire ropes 4 after passing through the limiting ring 5 are connected to a crossbar 11. Below the crossbar 11, there is a hoisting sling 12 that is connected and fixed to the lifeboat 10. The crossbar can enhance the stability of the steel wire ropes during release and retraction.

[0020] like Figure 2 As shown, the main pulley 6 consists of a rotating shaft 601 and a pulley 602. The rotating shaft 601 is placed inside the limiting ring 5. The pulley 602 is recessed in the middle. The pulley 602 has protruding extension plates 6021 on both sides. The extension plates 6021 have a small gap with the inner wall of the limiting ring 5. The limiting ring 5 is square in shape. The square structure can cooperate with the pulley. The protruding extension plates on both sides further reduce the gap with the inner wall of the square limiting ring. This double protection ensures that the wire rope always moves in close contact with the pulley groove and prevents the rope from slipping.

[0021] like Figure 2-3 As shown, a guide cylinder 13 is provided in front of the auxiliary pulley 8. The guide cylinder 13 is a through-tube structure. The openings at both ends of the guide cylinder 13 are turned outward to form arc-shaped rolled edges 1301. The guide cylinder can guide the wire rope before it enters the auxiliary pulley, ensuring that the rope enters the auxiliary pulley groove accurately. The arc-shaped rolled edge design at both ends can effectively prevent the rope from being scratched by the opening edge when entering and exiting the guide cylinder, thus protecting the structural integrity of the wire rope.

[0022] The working principle of this invention is explained as follows: During operation, the main rotating arm can adjust the overall frame angle to facilitate alignment with the lifeboat deployment and retrieval position. The steel wire rope sequentially passes through the guide tube for pre-guidance, changes direction via auxiliary pulleys, and further adjusts its path via steering pulleys before finally winding around the main pulley. The main pulley rotates stably within a square limiting ring, and recessed grooves and extension plates prevent the rope from slipping, driving the rope to be deployed and retracted along a preset path. The ends of the two sets of ropes are kept tension-balanced by crossbars, and the lower hoisting rigging connects to the lifeboat to prevent tilting during lifting and lowering. During rope retraction, power drives the rope upward along the pulley group, synchronously pulling the lifeboat via the crossbars; during rope release, the rope is slowly lowered, with each pulley and guide tube working together to ensure the rope does not deviate, achieving stable deployment and retrieval of the lifeboat.

[0023] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention should fall within the protection scope of the present invention. The technical content for which protection is sought in the present invention has been fully described in the claims.

Claims

1. A lifeboat rope deployment and retrieval structure, characterized in that: It includes a main rotating arm, a support arm, a connecting cross arm, and a steel wire rope. The support arm is fixedly connected to the top of the main rotating arm, and the center of the connecting cross arm is fixedly connected to the other end of the support arm. Limiting rings are provided at both ends of the connecting cross arm, and main pulleys are provided inside the limiting rings. Reinforcing ribs are symmetrically provided between the connecting cross arm and the support arm. A set of auxiliary pulleys is provided on the connecting cross arm and the reinforcing ribs. Steering pulleys are provided at the junctions of the reinforcing ribs and the connecting cross arm, and at the junctions of the reinforcing ribs and the support arm. The steel wire rope is connected to the main pulleys through the auxiliary pulleys and the steering pulleys, passes through the limiting rings, and extends downwards to connect with the lifeboat.

2. The lifeboat rope deployment and retrieval structure according to claim 1, characterized in that: The ends of the two sets of steel wire ropes that pass through the limiting ring are connected to a crossbar, and a hoisting sling is provided below the crossbar to connect and fix it to the lifeboat.

3. The lifeboat rope deployment and retrieval structure according to claim 1, characterized in that: The main pulley is composed of a rotating shaft and a pulley. The rotating shaft is placed inside the limiting ring. The pulley is recessed in the middle. The pulley has protruding extension plates on both sides. The extension plates have a small gap with the inner wall of the limiting ring. The limiting ring is square in shape.

4. The lifeboat rope deployment and retrieval structure according to claim 1, characterized in that: A guide tube is provided in front of the auxiliary pulley. The guide tube is a through-tube structure, and the openings at both ends of the guide tube are turned outward to form arc-shaped rolled edges.

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