A lattice type lifting lug for overall turning and hoisting of a large truss structure

Abstract

The utility model provides a kind of lattice type lifting lug for large truss structure overall turning over hoisting, it is related to truss hoisting technical field, including ear plate, truss steel pipe and annular stiff board, the front and rear sides of ear plate are all welded with pasting plate;The ear plate, pasting plate and annular stiff board are welded to form lifting lug frame, the lifting lug frame is welded with truss steel pipe;Two the side of pasting plate mutually away is all provided with lattice board, and the lattice board is welded connection with annular stiff board and truss steel pipe.This lifting lug structure is suitable for large tonnage, irregular truss overall turning over hoisting, and lifting lug structure installation is convenient, and stability is strong, and its good stress characteristics when overall hoisting operation is carried out, reduces construction risk, improves construction efficiency, reduces construction cost and operation difficulty, with good use value.

Description

Technical Field

[0001] This utility model relates to the field of truss structure hoisting technology, and more specifically, to a lattice-type lifting lug for the overall overturning and hoisting of large truss structures. Background Technology

[0002] Large truss structures are lattice-type load-bearing structures composed of several straight members connected by nodes (hinged nodes or rigid nodes). They typically have large spans, a large number of components, and a large overall scale. They are widely used in engineering fields such as large-span buildings, bridges, and large stadiums. The core feature is that the load is transferred by the axial force (tension or compression) of the members, which can meet the load-bearing requirements of large spaces with a relatively light self-weight.

[0003] With the development of bridge construction technology and structural innovation, the application of temporary box girder support structures in bridge construction is becoming more and more widespread. These temporary supports are mostly large-volume, large-tonnage, and irregular truss structures. The installation of such truss structures at sea faces many problems, such as the fact that the current offshore support construction and installation is mostly carried out by segmental hoisting and assembly, which is time-consuming, costly, difficult and risky. Utility Model Content

[0004] This utility model aims to solve the problems of long construction time, high construction cost, high operation difficulty and high construction risk in the existing technology of hoisting and assembly.

[0005] To solve the above problems, this utility model provides a lattice-type lifting lug for the overall overturning and hoisting of large truss structures, including a lug plate, truss steel pipe and annular stiffening plate, wherein the front and rear sides of the lug plate are welded with a plate. The ear plate, the mounting plate, and the annular stiffening plate are welded to form a lifting lug frame, which is then welded to the truss steel pipe. A lattice plate is provided on each of the two plates that are far apart from each other, and the lattice plate is welded to the annular stiffening plate and the truss steel pipe.

[0006] The present invention provides a lattice-type lifting lug for the overall tilting and hoisting of large truss structures, which, compared with the prior art, has the following beneficial effects, but is not limited to: This lattice-type lifting lug, used for the overall tilting and hoisting of large truss structures, is constructed by welding and installing plates on both sides of the lug plate, which are then welded together with the annular stiffening plate to form a lifting lug frame. The lifting lug frame is then welded to the corresponding lifting points on the truss steel pipes in the truss structure, and further reinforced by welding lattice plates. This connects the lifting lug structure and the truss structure into a tight and stable whole. This lifting lug structure is suitable for the overall tilting and hoisting of large-tonnage, irregular trusses. The lifting lug structure is easy to install and has strong stability. Its excellent stress characteristics reduce construction risks, improve construction efficiency, and lower construction costs and operational difficulty during overall hoisting operations, making it highly valuable.

[0007] Furthermore, the lattice-type lifting lug used for the overall overturning and hoisting of large truss structures includes an arched shackle and a pin, wherein the arched shackle is connected to the pin; the front side wall of the front panel has an ear hole that mates with the pin, and the ear hole extends through to the rear side wall of the rear panel.

[0008] Furthermore, the truss steel pipe includes a main steel pipe one and two main steel pipe two, and the bottom of the main steel pipe one is connected to three branch steel pipes; the two main steel pipe two are welded to the front and rear sides of the main steel pipe one respectively; the number of the annular stiffening plates is eight, namely two first bent annular stiffening plates, two second bent annular stiffening plates and four arc-shaped annular stiffening plates.

[0009] Furthermore, the number of lattice plates is eight; four are provided on each side of the two plates that are far apart from each other, and each lattice plate is welded between two adjacent annular stiffeners and welded to the main steel pipe.

[0010] Furthermore, the two first bent annular stiffeners are respectively welded to the left and right sides of the ear plate, and are welded to the main steel pipe and the corresponding branch steel pipe. Two second-bent annular stiffeners are symmetrically distributed on the side of the two plates that are far apart from each other. The second-bent annular stiffeners are welded to the plates, the main steel pipe and the corresponding branch steel pipe. Each of the second bent annular stiffeners has an arc-shaped annular stiffener on its left and right sides, and the arc-shaped annular stiffeners are welded to the plate, the first main steel pipe, and the second main steel pipe.

[0011] Furthermore, each of the two main steel pipes has a clearance slot at one end that is close to the other, which cooperates with the second bent annular stiffener.

[0012] Furthermore, when the lower ends of the first bent annular stiffener and the second bent annular stiffener are welded to the corresponding support steel pipes, they are bent at corresponding angles.

[0013] Furthermore, the ear plate and the mounting plate are welded together using intermittent fillet welds.

[0014] Furthermore, the first bent annular stiffener and the ear plate are connected by double-sided bevel penetration welding; the second bent annular stiffener and the arc-shaped annular stiffener are connected to the plate by bevel penetration welding.

[0015] Furthermore, the ear plate, annular stiffener, cladding plate, and lattice plate are all made of Q345b low alloy steel. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of the lattice-type lifting lugs used for the overall overturning and hoisting of large truss structures according to an embodiment of this utility model; Figure 2 For the present utility model Figure 1 Rear view; Figure 3 For the present utility model Figure 1 The left view; Figure 4 For the present utility model Figure 1 Top view; Figure 5 This is a schematic diagram of the connection structure between the ear plate and the mounting plate in an embodiment of the present utility model; Figure 6 This is a schematic diagram of the structure of the lifting lug frame according to an embodiment of the present utility model; Figure 7 For the present utility model Figure 6 Rear view; Figure 8 This is a schematic diagram of the connection structure between the lifting lug frame and the truss steel pipe in an embodiment of this utility model; Figure 9 For the present utility model Figure 8 Rear view; Figure 10 This is a schematic diagram of the connection structure between the lifting lug frame, the lattice plate, and the truss steel pipe in an embodiment of this utility model. Figure 11 For the present utility model Figure 10 Rear view; Figure 12 This is a schematic diagram of the structure of the second main steel pipe in an embodiment of this utility model.

[0017] Explanation of reference numerals in the attached figures: 1. Ear plate; 101. Ear hole; 2. Truss steel pipe; 201. Main steel pipe one; 202. Main steel pipe two; 2021. Clearance slot; 203. Support steel pipe; 3. Annular stiffening plate; 301. First bent annular stiffening plate; 302. Second bent annular stiffening plate; 303. Arc-shaped annular stiffening plate; 4. Adhesive plate; 5. Lattice plate; 6. Bow-shaped shackle; 7. Pin shaft. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings showing multiple embodiments according to this application. It should be understood that the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments described in this application without creative effort will fall within the scope of protection of this application.

[0019] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. The terminology used in the description of this application is for the purpose of describing specific embodiments only and is not intended to limit the use of open-ended terms such as "comprising," "including," "having," "containing," etc., in the description, claims, and accompanying drawings. Therefore, "comprising," "including," or "having" refers to, for example, a method or apparatus having one or more steps or elements, but not limited to having only these one or more elements. The terms "first," "second," etc., in the description, claims, or accompanying drawings are used to distinguish different objects, not to describe a specific order or hierarchy. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0020] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element 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.

[0021] Furthermore, in the attached diagram, the X-axis represents the vertical direction, that is, the front-to-back position, and the positive direction of the X-axis (that is, the direction the arrow points to) represents the front, and the negative direction of the X-axis (that is, the direction opposite to the positive direction of the X-axis) represents the back. In the attached diagram, the Y-axis represents the horizontal direction, that is, the left-to-right position, and the positive direction of the Y-axis (that is, the direction the arrow points to) represents the left, and the negative direction of the Y-axis (that is, the direction opposite to the positive direction of the Y-axis) represents the right. In the attached diagram, the Z-axis represents the vertical direction, that is, the up-to-down position, and the positive direction of the Z-axis (that is, the direction the arrow points to) represents the up, and the negative direction of the Z-axis (that is, the direction opposite to the positive direction of the Z-axis) represents the down.

[0022] It should also be noted that the aforementioned X-axis, Y-axis and Z-axis are only for the purpose of facilitating the description of this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0023] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can be a direct connection or an indirect connection through an intermediate medium; or 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 application according to the specific circumstances.

[0024] It should be emphasized that when the term "comprising / including" is used in this specification, it is used to explicitly indicate the presence of the stated feature, integer, step, or component, but does not exclude the presence or addition of one or more other features, integers, steps, parts, or groups of features, integers, steps, or parts.

[0025] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0026] See Figures 1-12 A lattice-type lifting lug for overall overturning and hoisting of a large truss structure according to an embodiment of the present utility model includes a lug plate 1, a truss steel pipe 2 and an annular stiffening plate 3. The front and rear sides of the lug plate 1 are welded with a plate 4. Ear plate 1, mounting plate 4 and annular stiffening plate 3 are welded to form a lifting ear frame, and the lifting ear frame is welded to the truss steel pipe 2; A lattice plate 5 is provided on each side of the two plates 4 that are far apart from each other. The lattice plate 5 is welded to the annular stiffening plate 3 and the truss steel pipe 2.

[0027] In this embodiment, the lattice-type lifting lug used for the overall tilting and hoisting of large truss structures is formed by welding and installing the mounting plates 4 on both sides of the lug plate 1, and then welding them together with the annular stiffening plate 3 to form a lifting lug frame. The lifting lug frame is then welded to the corresponding lifting points on the truss steel pipe 2 in the truss structure, and further reinforced by welding the lattice plate 5. This connects the lifting lug structure and the truss structure into a tight and stable whole. This lifting lug structure is suitable for the overall tilting and hoisting of large-tonnage, irregular trusses. Moreover, the lifting lug structure is easy to install and has strong stability. Its good stress characteristics reduce construction risks, improve construction efficiency, and reduce construction costs and operational difficulties during overall hoisting operations, thus having great practical value.

[0028] See Figures 1-3 Optionally, the lattice-type lifting lug used for the overall overturning and hoisting of large truss structures includes an arc-shaped shackle 6 and a pin 7, with the arc-shaped shackle 6 connected to the pin 7; the front side wall of the front side panel 4 is provided with an ear hole 101 that mates with the pin 7, and the ear hole 101 extends through to the rear side wall of the rear side panel 4.

[0029] In this embodiment, when in use, the corresponding bow-shaped shackle 6 and pin 7 are matched according to the lifting weight. The pin 7 is passed through the ear hole 101 and connected to the bow-shaped shackle 6 for installation, so that the lifting lug can be lifted and the large truss structure can be lifted further.

[0030] Specifically, the diameter of the ear hole 101 is the diameter of the pin 7 plus two millimeters, which facilitates the pin 7 to pass through the ear hole 101 to be installed on the ear plate 1 and the mounting plate 4.

[0031] See Figures 1-4 , Figure 8 and Figure 12 Optionally, the truss steel pipe 2 includes a main steel pipe 201 and two main steel pipes 202. The bottom of the main steel pipe 201 is connected to three branch steel pipes 203. The two main steel pipes 202 are welded to the front and rear sides of the main steel pipe 201 respectively. The number of annular stiffening plates 3 is eight, namely two first bent annular stiffening plates 301, two second bent annular stiffening plates 302 and four arc-shaped annular stiffening plates 303.

[0032] In this embodiment, multiple different types of annular stiffening plates 3 are used to connect with the main steel pipe 201, the main steel pipe 202 and the branch steel pipe 203 of the truss steel pipe 2 respectively, forming multiple load-bearing lifting points, so that the force is evenly distributed on the truss steel pipe 2 and the stability is improved during lifting.

[0033] See Figure 1 , Figure 10 and Figure 11Optionally, the number of lattice plates 5 is eight; four are set on each side of the two plates 4 that are far apart from each other, and a single lattice plate 5 is welded between two adjacent annular stiffening plates 3 and welded to the main steel pipe 201.

[0034] In this embodiment, after the lifting lug frame formed by welding the lug plate 1, the mounting plate 4 and the annular stiffening plate 3 is welded to the truss steel pipe 2, it is further reinforced by welding the lattice plate 5, which facilitates the connection of the lifting lug structure and the truss steel pipe 2 structure into a tight whole and improves the lifting stability.

[0035] See Figures 6-9 Optionally, the two first bent annular stiffening plates 301 are respectively welded to the left and right sides of the ear plate 1, and are welded to the main steel pipe 201 and the corresponding branch steel pipe 203. Two second-bend annular stiffening plates 302 are symmetrically distributed on the side of the two plates 4 that are far apart from each other. The second-bend annular stiffening plates 302 are welded to the plates 4, the main steel pipe 201 and the corresponding branch steel pipe 203. Each second bent annular stiffener 302 has an arc-shaped annular stiffener 303 on its left and right sides. The arc-shaped annular stiffener 303 is welded to the plate 4, the main steel pipe 1 201 and the main steel pipe 2 202.

[0036] In this embodiment, by dispersing and welding the first bent annular stiffening plate 301, the second bent annular stiffening plate 302, and the arc-shaped annular stiffening plate 303 to the corresponding lifting points on the ear plate 1, the mounting plate 4, and the truss steel pipe 2, the overall stability of the lifting ear structure is strong, making it suitable for the overall turning and lifting of large trusses.

[0037] See Figure 1 and Figure 12 Optionally, each of the two main steel pipes 202 has a clearance slot 2021 at one end that is close to the other, which cooperates with the second bent annular stiffening plate 302.

[0038] In this embodiment, after welding the ear plate 1, the mounting plate 4, and the annular stiffening plate 3 to form the lifting ear frame, welding it to the main steel pipe 201 and the branch steel pipe 203, and then welding the lattice plate 5, two main steel pipes 202 are used. One end of each pipe is compared with the second bent annular stiffening plate 302. A clearance slot 2021 that matches the second bent annular stiffening plate 302 is cut at one end of each main steel pipe 202. Then, the two main steel pipes 202 are welded to the main steel pipe 201 in both the front and rear directions, and the second bent annular stiffening plate 302 passes through the clearance slot 2021 to achieve welding and fixing between the two main steel pipes 202 and the main steel pipe 201.

[0039] It should be noted that when welding and installing the two main steel pipes 202, if interference occurs with the arc-shaped annular stiffening plate 303, the part of the arc-shaped annular stiffening plate 303 that interferes with the main steel pipe 202 should be cut off. After the main steel pipe 202 is welded and fixed to the main steel pipe 1 201, the cut part of the arc-shaped annular stiffening plate 303 is then welded to the outer wall of the main steel pipe 202 to achieve the welding connection between the arc-shaped annular stiffening plate 303 and the plate 4, the main steel pipe 1 201 and the main steel pipe 202, so that the overall load on the lifting lug is uniform.

[0040] See Figure 8 and Figure 9 Optionally, the lower ends of the first bent annular stiffener 301 and the second bent annular stiffener 302 are bent at corresponding angles when welded to the corresponding support steel pipes 203.

[0041] In this embodiment, there is a certain angle between the branch steel pipe 203 and the main steel pipe 201. During welding, the first bent annular stiffening plate 301 and the second bent annular stiffening plate 302 are bent at the corresponding angle to match the branch steel pipe 203, so that the first bent annular stiffening plate 301 and the second bent annular stiffening plate 302 can be firmly connected to each part of the truss steel pipe 2.

[0042] See Figure 1 Optionally, the ear plate 1 and the mounting plate 4 are welded together by intermittent fillet welds.

[0043] In this embodiment, the connection strength of the plates is ensured, thereby increasing the tensile and bending strength of the lifting lugs.

[0044] See Figure 1 Optionally, the first bent annular stiffener 301 is connected to the ear plate 1 by double-sided bevel penetration welding; the second bent annular stiffener 302 and the arc-shaped annular stiffener 303 are connected to the plate 4 by bevel penetration welding.

[0045] In this embodiment, the connection strength between the first bent annular stiffening plate 301 and the ear plate 1, and between the second bent annular stiffening plate 302, the arc-shaped annular stiffening plate 303 and the mounting plate 4 is improved, thereby enhancing the overall strength of the lifting lugs and making them suitable for the overall tilting and hoisting of large tonnage, irregular trusses, and capable of coping with complex stress conditions.

[0046] It should be noted that the welding of the annular stiffening plate 3 to the truss steel pipe 2 adopts double-sided fillet welds; the welding of the lattice plate 5 to the annular stiffening plate 3 and the truss steel pipe 2 adopts double-sided fillet welds. Among them, the height of the weld between the lifting lug components is less than or equal to the wall thickness of the component, and the height of the weld between the lifting lug and the truss steel pipe 2 is less than or equal to the wall thickness of the truss steel pipe.

[0047] See Figure 1Optionally, the ear plate 1, the annular stiffening plate 3, the mounting plate 4, and the lattice plate 5 are all made of Q345b low alloy steel.

[0048] In this embodiment, the overall stiffness, strength, and stability of the lifting lug are improved.

[0049] Although the present invention has been disclosed above, its protection scope is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the protection scope of the present invention.

Claims

1. A lattice-type lifting lug for the overall tilting and hoisting of large truss structures, characterized in that, It includes ear plates (1), truss steel pipes (2) and annular stiffeners (3), and the ear plates (1) are welded with plates (4) on both the front and rear sides. The ear plate (1), the mounting plate (4) and the annular stiffening plate (3) are welded to form a lifting ear frame, and the lifting ear frame is welded to the truss steel pipe (2); A lattice plate (5) is provided on each side of the two plates (4) that are far apart from each other. The lattice plate (5) is welded to the annular stiffening plate (3) and the truss steel pipe (2).

2. The lattice-type lifting lug for the overall tilting and hoisting of large truss structures according to claim 1, characterized in that, It includes a bow-shaped shackle (6) and a pin (7), the bow-shaped shackle (6) being connected to the pin (7); the front side wall of the front panel (4) is provided with an ear hole (101) that cooperates with the pin (7), and the ear hole (101) extends through to the rear side wall of the rear panel (4).

3. The lattice-type lifting lug for the overall tilting and hoisting of large truss structures according to claim 1, characterized in that, The truss steel pipe (2) includes a main steel pipe one (201) and two main steel pipe two (202). The bottom of the main steel pipe one (201) is connected to three branch steel pipes (203). The two main steel pipe two (202) are welded to the front and rear sides of the main steel pipe one (201) respectively. The number of the annular stiffening plates (3) is eight, namely two first bending annular stiffening plates (301), two second bending annular stiffening plates (302) and four arc-shaped annular stiffening plates (303).

4. The lattice-type lifting lug for the overall tilting and hoisting of large truss structures according to claim 3, characterized in that, The number of the lattice plates (5) is eight; four are set on each side of the two plates (4) that are far apart from each other, and a single lattice plate (5) is welded between two adjacent annular stiffening plates (3) and welded to the main steel pipe (201).

5. The lattice-type lifting lug for the overall tilting and hoisting of large truss structures according to claim 3, characterized in that, The two first bent annular stiffeners (301) are respectively welded to the left and right sides of the ear plate (1) and welded to the main steel pipe (201) and the corresponding branch steel pipe (203); Two second bent annular stiffeners (302) are symmetrically distributed on the side of the two plates (4) that are far apart from each other. The second bent annular stiffeners (302) are welded to the plates (4), the main steel pipe (201) and the corresponding branch steel pipe (203). Each of the second bent annular stiffeners (302) has an arc-shaped annular stiffener (303) on its left and right sides. The arc-shaped annular stiffeners (303) are welded to the plate (4), the first main steel pipe (201) and the second main steel pipe (202).

6. The lattice-type lifting lug for the overall tilting and hoisting of large truss structures according to claim 3, characterized in that, The two main steel pipes (202) are provided with a clearance slot (2021) at one end that is close to each other, which is matched with the second bent annular stiffening plate (302).

7. The lattice-type lifting lug for the overall tilting and hoisting of large truss structures according to claim 5, characterized in that, When the lower end of the first bent annular stiffener (301) and the lower end of the second bent annular stiffener (302) are welded to the corresponding support steel pipe (203), they are bent at the corresponding angles.

8. The lattice-type lifting lug for the overall tilting and hoisting of large truss structures according to claim 1, characterized in that, The ear plate (1) and the mounting plate (4) are welded by intermittent fillet welds.

9. The lattice-type lifting lug for the overall tilting and hoisting of large truss structures according to claim 3, characterized in that, The first bent annular stiffener (301) is connected to the ear plate (1) by double-sided bevel penetration welding; the second bent annular stiffener (302) and the arc-shaped annular stiffener (303) are connected to the plate (4) by bevel penetration welding.

10. The lattice-type lifting lug for the overall tilting and hoisting of large truss structures according to claim 1, characterized in that, The ear plate (1), the annular stiffening plate (3), the patch plate (4), and the lattice plate (5) are all made of Q345b low alloy steel.

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