Anti-fouling curtain lifting device

Abstract

The invention discloses an antifouling curtain lifting device which comprises a curtain body and at least two lifting assemblies arranged in the length direction of the curtain body at intervals. The lifting assembly comprises an outer circular pipe, a middle circular pipe which is arranged in the outer circular pipe in a penetrating mode and can slide in the axial direction of the outer circular pipe, and inner round steel which is arranged in the middle circular pipe in a penetrating mode and can slide in the axial direction of the middle circular pipe, the bottom end of the inner round steel is fixedly connected with the tail end of the curtain body, and the top end of the outer circular pipe is fixedly connected with the initial end of the curtain body; the curtain lifting device further comprises a lifting assembly used for driving the inner round steel and the middle round pipe to slide into the outer round pipe. The lifting assembly is arranged to pull and fix the curtain body, the mode that a drag chain is adopted for pulling and fixing in the prior art is replaced, the overall structure is simple and compact, use is convenient and fast, and the problems that in the prior art, structural strength is low, and use is inconvenient are solved.

Description

Technical Field

[0001] The invention relates to the technical field of marine equipment, and in particular to an anti-fouling curtain lifting device. Background Art

[0002] During the ship operation process, especially dredging, sand pumping and piling operations, water pollution will be caused to the surrounding waters. In order to protect the environment and prevent the leakage of pollutants, it is usually necessary to set up anti-fouling curtains around the operation area. However, the traditional anti-fouling curtain device has shortcomings in fixing and lifting, such as unstable fixing and complicated operation. Referring to the patent document with application number CN2023108528861, it discloses an anti-fouling structure for DCM pile ship construction, which includes a curtain, and the lower end of the curtain is connected with a counterweight chain along the lateral expansion direction of the curtain. The counterweight chain includes several sections of chain units, and a U-shaped tube structure is connected between adjacent chain units. A flexible rope is inserted into the U-shaped tube structure, one end of the flexible rope is wound on a flexible rope retracting device 1, and the other end is wound on a flexible rope retracting device 2, and a rigid member is hung between adjacent flexible ropes. The anti-fouling structure uses a counterweight chain to pull the curtain. This connection method will cause the curtain to swing easily, and there are problems such as low structural strength and inconvenient use. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an anti-fouling curtain lifting device, which can solve the problem of low structural strength in the past.

[0004] In order to solve the above technical problems, the present invention discloses an anti-fouling curtain lifting device, comprising a curtain body and at least two lifting components arranged at intervals along the length direction of the curtain body; the lifting components comprise an outer circular tube, an intermediate circular tube passed through the outer circular tube and slidable along the axial direction of the outer circular tube, an inner circular steel passed through the intermediate circular tube and slidable along the axial direction of the intermediate circular tube, the bottom end of the inner circular steel is fixedly connected to the end of the curtain body, and the top end of the outer circular tube is fixedly connected to the starting end of the curtain body; the curtain lifting device also comprises a lifting component for driving the inner circular steel and the intermediate circular tube to slide to the inside of the outer circular tube.

[0005] The lifting assembly includes a manual hoist, the manual hoist includes a retractable steel wire rope, the top end of the inner round steel is provided with a lifting ring, and the steel wire rope is fixedly connected to the lifting ring.

[0006] Wherein, a tip portion is formed at the bottom end of the inner round steel.

[0007] Among them, the bottom end face of the outer circular tube is vertically fixed with a first circular ring, the middle circular tube is inserted into the first circular ring, the outer peripheral side face of the middle circular tube is fixedly connected with a first limiting ring located inside the outer circular tube, the inner diameter of the first circular ring is smaller than the outer diameter of the first limiting ring, and the outer diameter of the first limiting ring is smaller than the inner diameter of the outer circular tube.

[0008] Among them, a second circular ring is vertically fixed to the bottom end face of the middle circular tube, the inner circular steel is inserted into the second circular ring, and the outer peripheral side of the inner circular steel is fixedly connected to a second limiting ring located inside the middle circular tube, the inner diameter of the second circular ring is smaller than the outer diameter of the second limiting ring, the outer diameter of the second limiting ring is smaller than the inner diameter of the middle circular tube, and the outer diameter of the second circular ring is equal to or larger than the outer diameter of the first circular ring.

[0009] Wherein, a third circular ring is fixedly connected to the lower end of the outer peripheral side surface of the inner circular steel, and the outer diameter of the third circular ring is equal to or greater than the outer diameter of the second circular ring.

[0010] Among them, the outer side surface of the first circular ring, the outer side surface of the second circular ring and the outer side surface of the third circular ring are all fixedly connected with eyelets for binding the curtain body.

[0011] Among them, the top end surface of the outer circular tube is vertically fixed with a first lifting ring, the top end surface of the middle circular tube is vertically fixed with a second lifting ring located inside the outer circular tube, and the top end surface of the inner circular steel is vertically fixed with a lifting cover plate. The inner diameter of the first lifting ring is smaller than the outer diameter of the second lifting ring, and the inner diameter of the second lifting ring is smaller than the outer diameter of the lifting cover plate.

[0012] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0013] (1) The curtain body is towed and fixed by setting a lifting assembly, replacing the previous method of using a drag chain for towing and fixing. The overall structure is simple and compact, easy to use, and solves the previous problems of low structural strength and inconvenient use;

[0014] (2) The inner round steel of the lifting assembly can use its own gravity to unfold the curtain, replacing the previous mechanical drive method, saving energy and simplifying the operation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 It is a schematic diagram of the structure of the curtain lifting device in the present invention in a retracted state;

[0017] Figure 2 It is a schematic diagram of the structure of the curtain lifting device in the present invention in the extended state;

[0018] Figure 3 It is a schematic diagram of the structure of the lifting assembly in the present invention in a retracted state;

[0019] Figure 4 It is a schematic diagram of the structure of the lifting assembly in the present invention in the extended state;

[0020] Figure 5 for Figure 3 The enlarged view of point A in the middle;

[0021] Figure 6 for Figure 3 The enlarged view of point B in the middle;

[0022] Figure 7 for Figure 4 Enlarged view of point C in the middle;

[0023] Figure 8 for Figure 4 Enlarged view of point D in the middle. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] The terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish different objects rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, device, product or server that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products or servers.

[0026] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0027] The present invention discloses a specific implementation of an anti-fouling curtain lifting device, see Figure 1 and Figure 2The anti-fouling curtain lifting device includes a curtain body 1 and three lifting components 2 arranged at intervals along the length direction of the curtain body 1. It should be noted that the lifting components 2 are used to pull and fix the curtain body 1. The number of lifting components 2 can be selectively set according to actual needs, and can be two, four, five, etc.

[0028] As an improvement, combined with Figure 3 and Figure 4 The lifting assembly 2 includes an outer tube 21, an intermediate tube 22 inserted in the outer tube 21 and slidable along the axial direction of the outer tube 21, and an inner round steel 23 inserted in the intermediate tube 22 and slidable along the axial direction of the intermediate tube 22. The bottom end of the inner round steel 23 is fixedly connected to the end of the curtain body 1, and the top end of the outer tube 21 is fixedly connected to the beginning of the curtain body 1. The outer tube 21, the intermediate tube 22 and the inner round steel 23 form a telescopic structure, which can extend and contract the curtain body 1, thereby improving the convenience of the curtain lifting device.

[0029] As a preferred solution, a tip portion 24 is formed at the bottom end of the inner round steel 23. The inner round steel 23 falls to the riverbed by its own gravity, and the tip portion 24 is a conical structure, which can be inserted into the riverbed, so that the bottom of the curtain body 1 can be fixed, and it will not swing due to the influence of wind, waves and currents to affect engineering operations, and the anti-fouling curtain can cover the riverbed as much as possible, with better anti-fouling effect, no need for additional power equipment, not only simplifying the operation process, but also making the device applicable to waters of different depths.

[0030] Combination Figure 1 and Figure 5 The curtain lifting device also includes a lifting assembly for driving the inner round steel 23 and the middle round tube 22 to slide into the inner part of the outer round tube 21. Optionally, the lifting assembly includes a manual hoist 51, which is a conventional manual hoist 51. The manual hoist 51 is simple, easy to maintain, and convenient to operate. The manual hoist 51 includes a retractable wire rope 52, which is wound around the manual hoist 51. The top end of the inner round steel 23 is provided with a lifting ring 25, and the wire rope 52 is fixedly connected to the lifting ring 25. Specifically, the top end surface of the outer round tube 21 is vertically fixed with a first lifting ring 41, the top end surface of the middle round tube 22 is vertically fixed with a second lifting ring 42 located inside the outer round tube 21, and the top end surface of the inner round steel 23 is vertically fixed with a lifting cover plate 43. The inner diameter of the first lifting ring 41 is smaller than the outer diameter of the second lifting ring 42, and the inner diameter of the second lifting ring 42 is smaller than the outer diameter of the lifting cover plate 43.

[0031] When the manual hoist 51 is lifted, the lifting ring 25 of the inner round steel 23 is connected to the wire rope 52, and the manual hoist 51 drives the wire rope 52 to retract. As the wire rope 52 is lifted, the lifting cover plate 43 of the inner round steel 23 contacts the second lifting ring 42 of the middle round tube 22. As the wire rope 52 is lifted, the middle round tube 22 is also lifted together with the inner round steel 23. When the second lifting ring 42 of the middle round tube 22 contacts the first lifting ring 41 of the outer round tube 21, the lifting process is completed, and the contraction of the entire curtain body 1 is completed.

[0032] In order to prevent the inner round steel 23 and the middle round tube 22 from falling out of the outer round tube 21 during the falling process, Figures 6 to 8 The bottom end surface of the outer circular tube 21 is vertically fixed with a first circular ring 31, the middle circular tube 22 is inserted in the first circular ring 31, and the outer peripheral side surface of the middle circular tube 22 is fixedly connected with a first limiting ring 61 located inside the outer circular tube 21, the inner diameter of the first circular ring 31 is smaller than the outer diameter of the first limiting ring 61, and the outer diameter of the first limiting ring 61 is smaller than the inner diameter of the outer circular tube 21. The bottom end surface of the middle circular tube 22 is vertically fixed with a second circular ring 32, the inner circular steel 23 is inserted in the second circular ring 32, and the outer peripheral side surface of the inner circular steel 23 is fixedly connected with a second limiting ring 62 located inside the middle circular tube 22, the inner diameter of the second circular ring 32 is smaller than the outer diameter of the second limiting ring 62, the outer diameter of the second limiting ring 62 is smaller than the inner diameter of the middle circular tube 22, and the outer diameter of the second circular ring 32 is equal to or larger than the outer diameter of the first circular ring 31. A third circular ring 33 is fixedly connected to the lower end of the outer peripheral side surface of the inner circular steel 23 . The outer diameter of the third circular ring 33 is equal to or greater than the outer diameter of the second circular ring 32 .

[0033] During the extension of the lifting assembly 2, the middle circular tube 22 and the inner circular steel 23 extend downward due to the action of gravity. When the first limiting ring 61 on the middle circular tube 22 contacts the first circular ring 31 of the outer circular tube 21, the middle circular tube 22 reaches the limit position, and the inner circular steel 23 continues to descend. When the second limiting ring 62 of the inner circular steel 23 contacts the second circular ring 32 of the middle circular tube 22, the inner circular steel 23 reaches the limit position, and the device reaches the maximum depth position.

[0034] It should be noted that the number of the first limiting ring 61 and the second limiting ring 62 can be selected and set according to actual needs. When two limiting rings are set, even if one of them is damaged, the other one can also serve as a backup.

[0035] In order to further pull and fix the curtain body 1, the bottom end of the middle circular tube 22 can be connected and fixed to the middle part of the curtain body 1. Specifically, the outer side surface of the first circular ring 31, the outer side surface of the second circular ring 32 and the outer side surface of the third circular ring 33 are all fixedly connected with eye rings 34 for binding the curtain body 1.

[0036] The anti-fouling curtain lifting device of this embodiment uses a lifting assembly 2 to pull and fix the curtain body 1, replacing the previous method of using a drag chain to pull and fix. The overall structure is simple and compact, easy to use, and solves the problem of low structural strength and inconvenient use in the past. The inner round steel 23 of the lifting assembly 2 can use its own gravity to unfold the curtain, replacing the previous method of using mechanical drive, saving energy consumption, and simplifying the operation process.

[0037] Finally, it should be noted that the anti-fouling curtain lifting device disclosed in the embodiment of the present invention only discloses a preferred embodiment of the present invention, which is only used to illustrate the technical solution of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that it is still possible to modify the technical solutions recorded in the aforementioned embodiments, or to replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An anti-fouling curtain lifting device, characterized in that: It comprises a curtain body and at least two lifting assemblies arranged at intervals along the length direction of the curtain body; The lifting assembly includes an outer round tube, an intermediate round tube inserted in the outer round tube and slidable along the axial direction of the outer round tube, and an inner round steel inserted in the intermediate round tube and slidable along the axial direction of the intermediate round tube, the bottom end of the inner round steel is fixedly connected to the end of the curtain body, and the top end of the outer round tube is fixedly connected to the beginning end of the curtain body; The curtain lifting device also includes a lifting assembly for driving the inner round steel and the middle round tube to slide into the inner part of the outer round tube.

2. The anti-fouling curtain lifting device according to claim 1, characterized in that: The lifting assembly comprises a manual hoist, and the manual hoist comprises a retractable steel wire rope. A lifting ring is arranged at the top end of the inner round steel, and the steel wire rope is fixedly connected to the lifting ring.

3. The anti-fouling curtain lifting device according to claim 1 or 2, characterized in that: The bottom end of the inner round steel is formed with a tip portion.

4. The anti-fouling curtain lifting device according to claim 1, characterized in that: A first circular ring is vertically fixed to the bottom end surface of the outer circular tube, the intermediate circular tube is inserted into the first circular ring, and the outer peripheral side surface of the intermediate circular tube is fixedly connected to a first limiting ring located inside the outer circular tube, the inner diameter of the first circular ring is smaller than the outer diameter of the first limiting ring, and the outer diameter of the first limiting ring is smaller than the inner diameter of the outer circular tube.

5. The anti-fouling curtain lifting device according to claim 4, characterized in that: A second circular ring is vertically fixed to the bottom end surface of the intermediate circular tube, the inner circular steel is inserted into the second circular ring, and the outer peripheral side surface of the inner circular steel is fixedly connected to a second limiting ring located inside the intermediate circular tube, the inner diameter of the second circular ring is smaller than the outer diameter of the second limiting ring, the outer diameter of the second limiting ring is smaller than the inner diameter of the intermediate circular tube, and the outer diameter of the second circular ring is equal to or larger than the outer diameter of the first circular ring.

6. The anti-fouling curtain lifting device according to claim 5, characterized in that: A third circular ring is fixedly connected to the lower end of the outer peripheral side surface of the inner circular steel, and the outer diameter of the third circular ring is equal to or greater than the outer diameter of the second circular ring.

7. The anti-fouling curtain lifting device according to claim 6, characterized in that: The outer side surfaces of the first circular ring, the second circular ring and the third circular ring are all fixedly connected with eyelets for tying up the curtain body.

8. The anti-fouling curtain lifting device according to claim 1, characterized in that: The top end surface of the outer circular tube is vertically fixed with a first lifting ring, the top end surface of the middle circular tube is vertically fixed with a second lifting ring located inside the outer circular tube, and the top end surface of the inner circular steel is vertically fixed with a lifting cover plate. The inner diameter of the first lifting ring is smaller than the outer diameter of the second lifting ring, and the inner diameter of the second lifting ring is smaller than the outer diameter of the lifting cover plate.

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