CN-122010007-A - Marine lifting platform and marine lifting device

CN122010007ACN 122010007 ACN122010007 ACN 122010007ACN-122010007-A

Abstract

The invention belongs to the field of marine elevators, and particularly relates to a marine lifting platform and a marine lifting device. The invention provides a marine lifting platform for improving bearing capacity, which comprises a platform body and connecting parts for being in transmission connection with a lifting mechanism, wherein a group of centering rollers are arranged on the left side and the right side of the platform body, each group of centering rollers comprises at least two centering rollers which are arranged up and down, the connecting parts are positioned on a vertical plane where rolling axes of all the centering rollers are positioned, the front side and the rear side of each centering roller are used for being in guide fit with a guide rail along the up-down direction, at least the outer side or at least the inner side of each centering roller is provided with a limiting ring, and the inner side or the outer side of each limiting ring is used for being in stop fit with the guide rail along the left-right direction. The invention also provides a marine lifting device comprising the marine lifting platform. Limiting guide to the table body is realized through the cooperation of two sets of righting idler wheels on the left side and the right side and the guide rail, so that the table body can be ensured to normally lift and lift when the table body is in a unbalanced load state, and the bearing capacity is improved.

Inventors

ZHANG YONGQING
ZHAI YAN
WANG BINGZHE
LI XUE

Assignees

中国船舶集团有限公司第七一三研究所
中船海为高科技有限公司

Dates

Publication Date: 20260512
Application Date: 20260202
Priority Date: 20251231

Claims (10)

1. The marine lifting platform comprises a platform body for supporting objects and a connecting part for being in transmission connection with a lifting mechanism for driving the platform body to lift, and is characterized in that a group of centering rollers are arranged on the left side and the right side of the platform body, each group of centering rollers comprises at least two centering rollers which are arranged up and down, the connecting part is positioned on a vertical plane where rolling axes of all the centering rollers are positioned, the front side and the rear side of each centering roller are used for being in guide fit with a guide rail along the up-down direction, at least the outer side or at least the inner side of each centering roller is provided with a limiting ring, the inner side or the outer side of each limiting ring is used for being in stop fit with the guide rail along the left-right direction so as to limit the left-right position of the platform body, and the distance between the rolling axes of the centering rollers on the vertical plane where the rolling axes of the centering rollers are positioned and the front end and the rear end of the platform body are different so as to realize unbalanced loading of the platform body.
2. The marine lifting platform of claim 1, wherein the ratio of the distance L1 to L2 of the vertical plane on which the rolling axis of the righting roller is located from the front and rear ends of the platform body satisfies 1:1< L1:l2<4:1.
3. The marine lifting platform of claim 1, wherein the connection is at the same height as the center of the same set of centering rollers and the connection is outboard of both sets of centering rollers.
4. The marine lifting platform of claim 1, wherein the stop collars are provided on both the left and right sides of each of the righting rollers.
5. The marine lifting platform of any one of claims 1-4, wherein the connection portion comprises connection pins for passing through chain holes in a chain of the lifting mechanism, the connection pins are respectively provided with at least two on the left and right sides of the platform body, and the midpoints of all the connection pins are positioned at the same height with the midpoints of all the centering rollers in the same set of centering rollers on either one of the left and right sides of the platform body.
6. A marine lifting device comprising a lifting platform, a lifting mechanism for driving the lifting platform to lift and a guiding mechanism for guiding the lifting platform to move up and down, wherein the guiding mechanism comprises a guide rail extending up and down, and the lifting platform is the marine lifting platform according to claim 1.
7. The marine lifting device of claim 6, wherein in the fore-and-aft direction, a vertical plane defining the rolling axis of the righting roller is at a distance L1 from one end of the platform body away from the side wall surface of the cabin, and at a distance L2 from the other end of the platform body, 1:1< L1:l2<4:1.
8. The marine lifting device of claim 6, wherein the guide rail is a ring-shaped guide rail with a notch, the centering rollers are arranged at the notch and are in guiding fit with the guide rail, the connecting parts are positioned at the same height with the centers of the centering rollers of the same group, and the connecting parts are positioned at the outer sides of the two groups of centering rollers and are positioned in the accommodating cavity surrounded by the ring-shaped guide rail.
9. The marine riser package of claim 8 wherein the riser package includes a sprocket and chain mechanism located in the receiving cavity, the sprocket and chain mechanism including sprockets located at upper and lower ends of the receiving cavity and a chain drivingly connected to the sprockets, the connection portion including a connection pin extending through a sprocket hole of the chain to drivingly connect the riser package to the marine riser platform, the connection pin being provided with at least two on each of the left and right sides of the platform body, and a midpoint of all of the connection pins being located at a same height as a midpoint of all of the centering rollers in a same set of centering rollers on either of the left and right sides of the platform body.
10. The marine riser package of any one of claims 6 to 9 wherein the right and left sides of each of the righting rollers are provided with stop collars.

Description

Marine lifting platform and marine lifting device Technical Field The invention belongs to the field of marine elevators, and particularly relates to a marine lifting platform and a marine lifting device. Background In the prior art, the elevator is generally installed on land (for example, CN206767553U, chinese patent No. 2017.12.19). For ships, materials such as living supplies and the like are inevitably required to be transferred between two decks. The ship is limited to shake easily, the lifter occupies more influence of a channel, materials are generally conveyed by utilizing a scissor type lifting platform with wheels at the bottom, and the scissor type lifting platform can be removed after the materials are conveyed. However, the scissor type lifting platform has the problems of large volume, low transmission efficiency, high maintenance cost, large shaking amount during lifting, environmental pollution caused by hydraulic oil leakage and the like. To solve the above part of the technical problems, a person skilled in the art modifies the elevator and enables it to be applied on a ship. For example, chinese patent application publication No. CN112357815A, publication No. 2021.02.12 discloses a marine lifting platform comprising an eccentrically arranged lifting platform to reduce the area of the passage occupied by the lifting platform and ensure a sufficiently large passage area of the passage. The lifting platform is also provided with a second limiting roller to further limit the lifting platform, so that the overturning moment formed by the self weight of the lifting platform and the materials is overcome, and the stability and the safety of the lifting platform are improved. On the one hand, the marine lifting platform is driven by a hydraulic cylinder matched with a pulley block, oil leakage is easy to occur, and environmental pollution is caused, on the other hand, materials and the total weight of the lifting platform form a overturning moment, and when the overturning moment which can be born by the lifting platform is fixed, the rated carrying capacity of the lifting platform is smaller, and the weight of materials which can be conveyed at one time is smaller. Disclosure of Invention The invention further aims to provide the marine lifting platform, so that the technical problem that the rated load capacity of the existing marine lifting platform is small is solved. The invention aims to provide a marine lifting device which aims to solve the same technical problems. In order to achieve the above purpose, the technical scheme of the marine lifting platform provided by the invention is as follows: The marine lifting platform comprises a platform body for supporting objects and a connecting part in transmission connection with a lifting mechanism for driving the platform body to lift, wherein a group of centering rollers are arranged on the left side and the right side of the platform body, each group of centering rollers comprises at least two centering rollers which are arranged up and down, the connecting part is positioned on a vertical plane where rolling axes of all the centering rollers are positioned, the front side and the rear side of each centering roller are used for being in guide fit with a guide rail along the up-down direction, at least the outer side or at least the inner side of each centering roller is provided with a limiting ring, the inner side or the outer side of each limiting ring is used for being in stop fit with the guide rail along the left-right direction so as to limit the left-right position of the platform body, and the distance between the vertical plane where the rolling axes of the centering rollers are positioned and the front end and the rear end of the platform body is different so as to realize unbalanced loading of the platform body. Furthermore, the ratio of the distance L1 between the vertical plane where the rolling axis of the centralizing roller is located and the front end and the rear end of the table body to the distance L2 is 1:1< L1:L2<4:1. Furthermore, the connecting part and the center of the same group of centralizing rollers are positioned at the same height, and the connecting part is positioned at the outer sides of the two groups of centralizing rollers. Furthermore, the limiting rings are arranged on the left side and the right side of each centralizing roller. Further, the connecting portion comprises connecting pins for penetrating through chain holes in the chains of the lifting mechanism, at least two connecting pins are respectively arranged on the left side and the right side of the table body, and the midpoints of all the connecting pins and the midpoints of all the centralizing rollers in the same group of centralizing rollers are located at the same height on any one of the left side and the right side of the table body. The marine lifting platform has the beneficial effects that the limiting rings are matched with the guide