Adjustable LNG carrier multi-purpose boom
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 恒力造船(大连)有限公司
- Filing Date
- 2025-08-08
- Publication Date
- 2026-07-14
Smart Images
Figure CN224493442U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of multi-purpose gantry crane technology for LNG carriers, and is a multi-purpose gantry crane for LNG carriers that is easy to adjust. Background Technology
[0002] As a clean and efficient energy source, liquefied natural gas (LNG) has seen a continuous increase in demand in recent years, leading to a corresponding expansion in its transportation needs. This market trend has created broad prospects for the LNG carrier construction market. LNG carriers are specialized vessels designed to transport liquefied natural gas at extremely low temperatures of -163°C, often referred to as "super-refrigerated trucks at sea." Their technology is extremely advanced, and they are considered one of the "three jewels in the crown" of shipbuilding, alongside aircraft carriers and large cruise ships, representing the highest level of global shipbuilding technology. Compared to ordinary merchant ships, LNG carriers are significantly more expensive. These vessels are technologically advanced and have high added value, not only bringing shipyards greater profits but also enhancing their economic efficiency and profitability.
[0003] During the transportation, loading, unloading, and maintenance of LNG carriers, various equipment and materials often need to be lifted and related operations are carried out. Traditional jack structures are often single-function and cannot meet the diverse lifting needs of LNG carriers. In addition, jacks have poor flexibility and are not easy to adjust according to needs, which affects their use. Utility Model Content
[0004] This invention addresses the technical problems of traditional lifting boom structures often having limited functionality, making it difficult to meet the diverse lifting needs of LNG carriers, and the poor flexibility of lifting booms, which hinders their use. Instead, it provides a multi-purpose lifting boom for LNG carriers that is easy to adjust.
[0005] This utility model solves the above-mentioned technical problems through the following technical solutions:
[0006] This utility model provides an easily adjustable multi-purpose boom for LNG carriers, the easily adjustable multi-purpose boom for LNG carriers comprising:
[0007] Main beam, the surface of which is fitted with a web plate;
[0008] Main beam panels, with main beam panels installed at the top and bottom of the main beam;
[0009] Main beam partition, the main beam partition is fixedly connected to the front and rear surfaces of the web of the main beam;
[0010] The first lifting lug assembly is installed on the top of the main beam panel on the top side of the main beam.
[0011] The second lifting lug assembly is installed at the bottom of the main beam panel on the bottom side of the main beam.
[0012] The third lifting lug assembly is installed on the top of the main beam panel on the top side of the main beam.
[0013] Furthermore, the main beam has two webs, which are disposed on the front and rear surfaces of the main beam, and an information marking area is provided in the middle of the web.
[0014] Furthermore, reinforcing elbows are provided on both sides of the information identification area and installed on the surface of the web of the main beam. The reinforcing elbows are installed on the bottom surface of the main beam panel.
[0015] Furthermore, two support plates are installed on opposite sides of the bottom of the main beam panel on the bottom side of the main beam.
[0016] Furthermore, two support elbows are fixedly connected to the side surface of the support plate, and the top of the support elbows is fixedly connected to the bottom surface of the main beam panel on the bottom side of the main beam.
[0017] Furthermore, the first lifting lug assembly includes a first lifting lug plate, a first lifting groove, a first rotating bead, and a first rotating cylinder. The first lifting lug plate is installed on the top side of the main beam panel. The first lifting lug has a first lifting groove, and the first rotating bead is rotatably connected in the first lifting groove. The first rotating bead is rotatably connected to the outer surface of the first rotating cylinder.
[0018] Furthermore, the second lifting lug assembly includes a second lifting lug plate, a second lifting groove, a second rotating bead, and a second rotating cylinder. The second lifting lug plate is symmetrically installed on the bottom surface of the main beam panel. Fifteen second lifting grooves are equidistantly opened on the surface of the second lifting lug plate. The second rotating bead is installed in the second lifting groove and is in rolling connection with the outer surface of the second rotating cylinder.
[0019] Furthermore, the third lifting lug assembly includes a third lifting lug plate, a third lifting groove, a third rotating bead, and a third rotating cylinder. The third lifting lug plate is fixedly installed on the top side surface of the main beam panel. The surface of the third lifting lug plate has a third lifting groove, and a third rotating bead is installed in the third lifting groove. The third rotating bead is rotatably connected to the outside of the third rotating cylinder.
[0020] Furthermore, multiple main beam partitions are installed on the side surface of the web of the main beam, and adjacent main beam partitions are distributed at equal intervals.
[0021] Furthermore, there are two main beam panels, which are symmetrically distributed about the main beam.
[0022] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of this utility model.
[0023] The positive and progressive effects of this utility model are as follows:
[0024] The aforementioned adjustable multi-purpose LNG carrier boom, with its wire rope connected to the lifting lugs, utilizes a first, second, and third rotating drum to reduce friction at the connection point and maintain optimal temperature. During lifting, slow lifting is necessary, and personnel are prohibited from standing nearby. After the boom is under load, it must be checked for interference with outfitting components. If no issues are found, the equipment should be lifted 100-200mm off the ground and stabilized before commencing formal lifting operations. After use, the boom should be properly stored and regularly inspected for appearance and flaw detection for future use. The first, second, and third lifting lug assemblies allow for easy adjustment according to lifting requirements, offering flexible operation and convenience to meet the diverse lifting needs of LNG carriers. Attached Figure Description
[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application.
[0026] Figure 1 This is a three-dimensional structural diagram of the multi-purpose boom for LNG carriers according to this utility model.
[0027] Figure 2 This is a bottom-view three-dimensional structural diagram of the multi-purpose boom for LNG carriers according to this utility model.
[0028] Figure 3 This is a schematic diagram of the main structure of the multi-purpose boom for LNG carriers according to this utility model.
[0029] Figure 4 This is a front sectional view of the multi-purpose boom for LNG carriers according to this utility model.
[0030] Figure 5 This is a schematic diagram of the first lifting lug assembly of the multi-purpose lifting boom for LNG carriers according to this utility model.
[0031] Figure 6 This is a schematic diagram of the second lifting lug assembly of the multi-purpose lifting boom for LNG carriers according to this utility model.
[0032] Figure 7 This is a schematic diagram of the third lifting lug assembly of the multi-purpose lifting boom for LNG carriers according to this utility model.
[0033] Explanation of reference numerals in the attached figures
[0034] 1. Main beam web; 2. Main beam face plate; 3. Main beam diaphragm; 4. Support plate; 5. Support elbow plate; 6. First lifting lug assembly; 61. First lifting lug plate; 62. First lifting groove; 63. First rotating ball; 64. First rotating cylinder; 7. Second lifting lug assembly; 71. Second lifting lug plate; 72. Second lifting groove; 73. Second rotating ball; 74. Second rotating cylinder; 8. Third lifting lug assembly; 81. Third lifting lug plate; 82. Third lifting groove; 83. Third rotating ball; 84. Third rotating cylinder; 9. Reinforcing elbow plate; 10. Information marking area; 11. Main beam. Detailed Implementation
[0035] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.
[0036] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.
[0037] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.
[0038] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.
[0039] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; 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, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.
[0040] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.
[0041] like Figure 1-7 As shown, the easily adjustable multi-purpose LNG carrier boom includes:
[0042] Main beam 11, the surface of which is fitted with a main beam web 1, the main beam 11 is made of AH36;
[0043] Main beam panel 2, the main beam 11 is equipped with main beam panel 2 at the top and bottom;
[0044] Main beam partition 3, which is fixedly connected to the front and rear surfaces of the web plate 1 of the main beam;
[0045] The main beam web plate 1 of the lifting boom has a thickness of 25mm, the main beam panel 2 has a thickness of 30mm, the main beam partition 3 has a thickness of 15mm, the first lifting lug assembly 6 is a 60-ton lifting lug, the second lifting lug assembly 7 is a 15-hole 50-ton lifting lug assembly, and the third lifting lug assembly 8 is a 5-ton lifting lug. All structural components must be derusted before welding. Unless otherwise specified, the weld leg of the corner welds is 0.7 times the thickness of the thinner plate among the welded plates. After welding, except for the support plate 4 and support elbow plate 5 which do not require flaw detection, the main beam panel 2, main beam web plate 1, and main beam partition 3 require UT flaw detection, and the remaining components require MT flaw detection. After completion, the multi-purpose lifting boom is painted with two coats of yellow paint and requires regular inspection, testing, and maintenance. If cracks, deformation, or other damage are found, it must be taken out of service or scrapped. Before using this lifting boom, its appearance quality must be checked. If any damage is found, it must not be used. The lifting boom should be stored in a dry location, avoiding humid environments, and the support structure should be stored on the ground.
[0046] During use, the wire rope is connected to the lifting lug. The first rotating drum 64, the second rotating drum 74, and the third rotating drum 84 work together to reduce friction at the connection point and ensure proper temperature control. Lifting should be done slowly, and no personnel are allowed to stand nearby. After the support rod is under load, check for interference with outfitting components. If there are no issues, the equipment can be lifted 100-200mm off the ground and stabilized before commencing formal lifting operations. After use, the equipment should be stored properly and undergo regular visual and non-destructive testing for future use. The first lifting lug assembly 6, the second lifting lug assembly 7, and the third lifting lug assembly 8 allow for adjustments based on lifting requirements, making operation flexible and convenient, and meeting the diverse lifting needs of LNG carriers.
[0047] The first lifting lug assembly 6 is installed on the top of the main beam panel 2 on the top side of the main beam 11;
[0048] The second lifting lug assembly 7 is installed at the bottom of the main beam panel 2 on the bottom side of the main beam 11;
[0049] The third lifting lug assembly 8 is installed on the top of the main beam panel 2 on the top side of the main beam 11.
[0050] The main beam web 1 has two webs 1, which are disposed on the front and rear surfaces of the main beam 11. An information marking area 10 is provided in the middle of the main beam web 1.
[0051] The information identification area 10 is provided with reinforcing elbow plates 9 on both sides, which are installed on the surface of the web plate 1 of the main beam. The reinforcing elbow plates 9 are installed on the bottom surface of the main beam panel 2.
[0052] Support plates 4 are installed on opposite sides of the bottom of the main beam panel 2 on the bottom side of the main beam 11, and there are two support plates 4.
[0053] Two support elbow plates 5 are fixedly connected to the side surface of the support plate 4, and the top of the support elbow plate 5 is fixedly connected to the bottom surface of the main beam panel 2 on the bottom side of the main beam 11.
[0054] The first lifting lug assembly 6 includes a first lifting lug plate 61, a first lifting groove 62, a first rotating bead 63, and a first rotating cylinder 64. The first lifting lug plate 61 is installed on the top side of the main beam panel 2. The first lifting lug has a first lifting groove 62. The first rotating bead 63 is rotatably connected in the first lifting groove 62. The first rotating bead 63 is rotatably connected to the outer surface of the first rotating cylinder 64.
[0055] The second lifting lug assembly 7 includes a second lifting lug plate 71, a second lifting groove 72, a second rotating bead 73, and a second rotating cylinder 74. The second lifting lug plate 71 is symmetrically installed on the bottom side surface of the main beam panel 2. Fifteen second lifting grooves 72 are equidistantly opened on the surface of the second lifting lug plate 71. The second rotating bead 73 is installed in the second lifting groove 72 and is in rolling connection with the outer surface of the second rotating cylinder 74.
[0056] The third lifting lug assembly 8 includes a third lifting lug plate 81, a third lifting groove 82, a third rotating bead 83, and a third rotating cylinder 84. The third lifting lug plate 81 is fixedly installed on the top side surface of the main beam panel 2. The third lifting lug plate 81 has a third lifting groove 82 on its surface. The third rotating bead 83 is installed in the third lifting groove 82 and is rotatably connected to the outside of the third rotating cylinder 84.
[0057] Multiple main beam partitions 3 are installed on the side surface of the web 1 of the main beam, and adjacent main beam partitions 3 are distributed at equal intervals.
[0058] There are two main beam panels 2, and the two main beam panels 2 are symmetrically distributed about the main beam 11.
[0059] The circuits, electronic components, and modules involved are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this application does not involve any improvement to the software and methods.
[0060] This utility model is not limited to the above-described embodiments. Any changes in its shape or structure fall within the protection scope of this utility model. The protection scope of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the protection scope of this utility model.
Claims
1. A versatile gantry crane for LNG carriers that is easy to adjust, characterized in that, The easily adjustable multi-purpose LNG carrier boom includes: Main beam (11), the surface of which is fitted with a web plate (1); Main beam panel (2), the main beam (11) is equipped with main beam panel (2) at the top and bottom; Main beam partition (3), the main beam partition (3) is fixedly connected to the front and rear surfaces of the web plate (1) of the main beam; The first lifting lug assembly (6) is installed on the top of the main beam panel (2) on the top side of the main beam (11); The second lifting lug assembly (7) is installed at the bottom of the main beam panel (2) on the bottom side of the main beam (11); The third lifting lug assembly (8) is installed on the top of the main beam panel (2) on the top side of the main beam (11).
2. The adjustable multi-purpose LNG carrier boom as described in claim 1, characterized in that: The main beam web (1) has two webs (1), which are located on the front and rear surfaces of the main beam (11). An information marking area (10) is provided in the middle of the main beam web (1).
3. The easily adjustable multi-purpose LNG carrier boom as described in claim 2, characterized in that: The information identification area (10) is provided with reinforcing elbow plates (9) installed on the surface of the web plate (1) of the main beam on both sides. The reinforcing elbow plates (9) are installed on the bottom surface of the main beam panel (2).
4. The adjustable multi-purpose LNG carrier boom as described in claim 1, characterized in that: Support plates (4) are installed on opposite sides of the bottom of the main beam panel (2) on the bottom side of the main beam (11), and there are two support plates (4).
5. The easily adjustable multi-purpose LNG carrier boom as described in claim 4, characterized in that: Two support elbows (5) are fixedly connected to the side surface of the support plate (4), and the top of the support elbows (5) is fixedly connected to the bottom surface of the main beam panel (2) on the bottom side of the main beam (11).
6. The easily adjustable multi-purpose LNG carrier boom as described in claim 1, characterized in that: The first lifting lug assembly (6) includes a first lifting lug plate (61), a first lifting groove (62), a first rotating bead (63), and a first rotating cylinder (64). The first lifting lug plate (61) is installed on the top side of the main beam panel (2). The first lifting lug has a first lifting groove (62) inside. The first rotating bead (63) is rotatably connected inside the first lifting groove (62). The first rotating bead (63) is rotatably connected to the outer surface of the first rotating cylinder (64).
7. The adjustable multi-purpose LNG carrier boom as described in claim 1, characterized in that: The second lifting lug assembly (7) includes a second lifting lug plate (71), a second lifting groove (72), a second rotating bead (73), and a second rotating cylinder (74). The second lifting lug plate (71) is symmetrically installed on the bottom surface of the main beam panel (2). Fifteen second lifting grooves (72) are equidistantly opened on the surface of the second lifting lug plate (71). The second rotating bead (73) is installed in the second lifting groove (72). The second rotating bead (73) is rolledly connected to the outer surface of the second rotating cylinder (74).
8. The adjustable multi-purpose LNG carrier boom as described in claim 1, characterized in that: The third lifting lug assembly (8) includes a third lifting lug plate (81), a third lifting groove (82), a third rotating bead (83), and a third rotating cylinder (84). The third lifting lug plate (81) is fixedly installed on the top side surface of the main beam panel (2). The third lifting lug plate (81) has a third lifting groove (82) on its surface. The third rotating bead (83) is installed in the third lifting groove (82). The third rotating bead (83) is rotatably connected to the outside of the third rotating cylinder (84).
9. The adjustable multi-purpose LNG carrier boom as described in claim 1, characterized in that: Multiple main beam partitions (3) are installed on the side surface of the web plate (1) of the main beam, and the partitions (3) of the main beam are equidistantly distributed between adjacent main beam partitions (3).
10. The easily adjustable multi-purpose LNG carrier boom as described in claim 1, characterized in that: The number of main beam panels (2) is two, and the two main beam panels (2) are symmetrically distributed about the main beam (11).