A ring beam device for hoisting SC structural modules in nuclear power plants

Abstract

This utility model discloses a ring beam device for hoisting SC structural modules in nuclear power plants, including a ring distributor, several slings, a ring lifting beam, and several rigging devices. One end of each sling is connected to the ring distributor, and the other end is connected to the ring lifting beam. One end of each rigging device is connected to the lifting beam. The ring lifting beam is composed of several truss units, with adjacent truss units fixed by bolt groups. Each truss unit includes two connecting plates, several main support members, and several auxiliary support members. The main support members are connected to the two connecting plates at both ends, and the auxiliary support members are connected in an orderly manner to different main support members. The main support members of the truss unit are connected to the connecting plates via butt welds. Bolt groups are installed around the connecting plates to achieve inter-unit connections. The connecting plates, while transmitting hoisting loads, also ensure the rigidity of the connection points.

Description

Technical Field

[0001] This utility model relates to the technical field of large-component hoisting during the construction phase of nuclear power plants, specifically to a ring beam device for hoisting SC structural modules in nuclear power plants. Background Technology

[0002] The SC structure lifting beam structure is a device for lifting SC structures. In existing SC structure lifting beam structures, the vertical lifting load needs to be transferred through the truss beam structure. Specifically, both the upper and lower lifting points are directly set on the main pipe of the truss beam, and the main pipe is reinforced with thickened sleeves. The vertical lifting load must be transferred from the lower lifting point to the upper lifting point through the main pipe, branch pipes, and their welds of the truss beam. The upper lifting lugs must be placed along the direction of the secondary slings, requiring high directional positioning. Existing SC structure lifting beam devices achieve segmental connection through four separate connecting joints. Specifically, a joint is set on each of the four main pipes, each joint has a ring of bolts, and radially cross-section connecting branch pipes are set near the connection section to improve the strength and rigidity of the connection.

[0003] The drawbacks of existing SC structure lifting beam devices are: 1. The load of the lower lifting point needs to be transferred to the upper lifting point through the truss beam, which must bear both vertical and horizontal loads; 2. The connection method of the joint is weak, and it is strengthened by adding branch pipes. Therefore, the existing structure has high requirements for component strength and welding strength, the self-weight of the lifting beam is large, the manufacturing difficulty is high, and the economic efficiency is low. Utility Model Content

[0004] This invention aims to solve some problems existing in the prior art. Therefore, one objective of this invention is to propose a ring beam device for hoisting SC structural modules in nuclear power plants. By optimizing the connection structure of the truss beams, the vertical hoisting load is directly transferred from the lower hoisting point to the upper hoisting point, reducing stress on various structures.

[0005] To achieve the above objectives, this utility model proposes:

[0006] A ring beam device for hoisting SC structural modules in nuclear power plants includes a ring distributor, several slings, a ring lifting beam, and several rigging devices. One end of each sling is connected to the ring distributor and the other end is connected to the ring lifting beam. One end of each rigging device is connected to the lifting beam. The ring lifting beam is composed of several truss units, with adjacent truss units fixed by bolt groups. Each truss unit includes two connecting plates, several main support members, and several auxiliary support members. Both ends of the main support members are connected to the two connecting plates, and the auxiliary support members are connected in an orderly manner to different main support members.

[0007] Preferably, in the truss unit, one connecting plate is provided with at least one upper lifting lug at one end and at least two lower lifting lugs at the other end, one end of the sling is connected to the upper lifting lug, and one end of the rigging is connected to the lower lifting lug.

[0008] Preferably, the connecting plate has a plurality of through holes along its outer contour, and bolt groups can be assembled in the through holes.

[0009] Preferably, the main support member is an arc-shaped structural member, and the arc length of the main support member located on the outer ring is greater than the arc length of the main support member located on the inner ring.

[0010] Preferably, several main support members and several auxiliary support members form multiple triangular structures.

[0011] Preferably, the circular distributor includes an upper connecting part and a lower disc part, and the lower disc part is provided with a plurality of annularly arranged connecting ears, and the other end of the sling is connected to the connecting ears.

[0012] The beneficial effects of this utility model are:

[0013] The main support components of the truss unit are connected to the connecting plate by butt welds. Bolt groups are set around the connecting plate to achieve the connection between units. While transmitting the hoisting load, the connecting plate also plays a role in ensuring the rigidity of the connection.

[0014] Both the upper and lower lifting lugs are mounted on the connecting plate. The vertical load of the lower lifting lug can be directly transferred to the upper lifting lug through the connecting plate without the need for transfer through the truss beam. The upper lifting lug can be arranged radially, simplifying the positioning requirements.

[0015] Compared with existing technologies, this ring beam device has a relatively simple structure, is easy to manufacture, and is economically efficient, while ensuring that the lifting load and stiffness meet the requirements.

[0016] The features and advantages of this utility model will be described in detail through embodiments in conjunction with the accompanying drawings. Attached Figure Description

[0017] Figure 1 This is the front view of this utility model;

[0018] Figure 2 This is a utility model Figure 1 Enlarged view of point A in the image;

[0019] Figure 3 This is a utility model Figure 1 Enlarged view of point B in the image;

[0020] Figure 4 This is a top view of the annular lifting beam of this utility model.

[0021] Reference numerals: 1. Ring distributor, 11. Upper connecting part, 12. Lower disc part, 2. Sling, 3. Ring lifting beam, 31. Truss unit, 311. Connecting plate, 3111. Upper lifting lug, 3112. Lower lifting lug, 312. Main support member, 313. Auxiliary support member, 4. Rigging. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses consistent with some aspects of this application as detailed in the appended claims.

[0024] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, the technical or scientific terms used in this application should be understood in their ordinary sense by one of ordinary skill in the art to which this utility model pertains. The words “a” or “one” and similar terms used in this application specification and claims do not indicate a limitation of quantity, but rather indicate the presence of at least one. “A plurality” includes two, equivalent to at least two. The words “comprising” or “including” and similar terms mean that the element or object preceding “comprising” or “including” covers the element or object listed following “comprising” or “including” and its equivalents, and does not exclude other elements or objects. The words “connected” or “linked” and similar terms are not limited to physical or mechanical connections and can include electrical connections, whether direct or indirect. The singular forms “a,” “the,” and “the” used in this application specification and appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0025] To ensure the safe and stable hoisting of SC structural modules in nuclear power plants, a ring beam device for hoisting SC structural modules in nuclear power plants was developed. This device optimizes the stress structure based on traditional hoisting beams and also reduces the self-weight of the hoisting beam.

[0026] Please refer to the following for details. Figure 1-4A ring beam device for hoisting SC structural modules in nuclear power plants includes a ring distributor 1, 16 slings 2, a ring lifting beam 3, and 32 rigging 4 forming a complete hoisting structure. The ring distributor 1 is connected to a hoisting machine. The rigging 4 hoists the object. One end of the sling 2 is connected to the ring distributor 1, and the other end is connected to the ring lifting beam 3. One end of the rigging 4 is connected to the lifting beam. The ring lifting beam 3 is composed of 16 truss units 31. Each truss unit 31 includes two connecting plates 311, four main support members 312, and several auxiliary support members 313. The two ends of the four main support members 312 are respectively connected to the two connecting plates 311, and the several auxiliary support members 313 are connected in an orderly manner to different main support members 312.

[0027] Specifically, two main support members 312 are installed in parallel above the connecting plate 311, and two main support members 312 are installed in parallel below the connecting plate 311.

[0028] Furthermore, in the truss unit 31, the connecting plate 311 on the left side is provided with an upper lifting lug 3111 at one end and two lower lifting lugs 3112 at the other end. One end of the sling 2 is connected to the upper lifting lug 3111, and one end of the rigging 4 is connected to the lower lifting lug 3112.

[0029] Furthermore, the connecting plate 311 has several through holes along its outer contour, and bolt groups can be installed in the through holes. That is, two adjacent truss units 31 are fixed by M30 high-strength bolt groups to form the entire annular hanging beam 3.

[0030] Furthermore, the main support member 312 is an arc-shaped structural member, and the arc length of the main support member 312 located on the outer ring is greater than the arc length of the main support member 312 located on the inner ring.

[0031] Furthermore, multiple triangular structures are formed between several main support members 312 and several auxiliary support members 313. The triangular structures have stability, which makes the strength of the annular hanging beam 3 even higher.

[0032] Furthermore, the circular distributor includes an upper connecting part 11 and a lower disc part 12. The lower disc part 12 has several annularly arranged connecting ears on its lower side, and the other end of the sling 2 is connected to the connecting ears.

[0033] In this embodiment, all main support components 312 are made of Φ219x8 Q355C tubing, all auxiliary support components 313 are made of Φ150x8 Q355C tubing, with a cross-sectional size of 1100x1200; all connecting plates 311 are cut from 60mm Q355C steel plates.

[0034] This ring beam device is assembled by cutting and welding various types of steel. The ring lifting beam 3 transfers the load (rigging 4 and the object being lifted) of the 32 lower lifting lugs 3112 to the 16 upper lifting lugs 3111 through the connecting plate 311. That is, by using this ring beam device, the vertical lifting load can be directly transferred from the lower lifting point to the upper lifting point, reducing the stress on each structure.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A ring beam device for hoisting SC structural modules in nuclear power plants, characterized in that, It includes a ring distributor (1), several slings (2), a ring beam (3) and several rigging (4). One end of the sling (2) is connected to the ring distributor (1) and the other end is connected to the ring beam (3). One end of the rigging (4) is connected to the beam. The ring beam (3) is composed of several truss units (31). Two adjacent truss units (31) are fixed by bolt groups. The truss unit (31) includes two connecting plates (311), several main support members (312) and several auxiliary support members (313). The two ends of the several main support members (312) are respectively connected to the two connecting plates (311). The several auxiliary support members (313) are connected in an orderly manner on different main support members (312).

2. The ring beam apparatus for hoisting a nuclear power SC structure module according to claim 1, characterized in that, In the truss unit (31), one end of a connecting plate (311) is provided with at least one upper lifting lug (3111) and the other end is provided with at least two lower lifting lugs (3112). One end of the sling (2) is connected to the upper lifting lug (3111), and one end of the rigging (4) is connected to the lower lifting lug (3112).

3. The ring beam device for hoisting nuclear power plant SC structural modules according to claim 1, characterized in that, The connecting plate (311) has several through holes along its outer contour, and bolt groups can be assembled in the through holes.

4. The ring beam apparatus for hoisting a nuclear SC structure module according to claim 1, wherein, The main support member (312) is an arc-shaped structural member, and the arc length of the main support member (312) located on the outer ring is greater than the arc length of the main support member (312) located on the inner ring.

5. The ring beam apparatus for hoisting a nuclear SC structure module according to claim 4, wherein, Several main support members (312) and several auxiliary support members (313) form multiple triangular structures.

6. The ring beam apparatus for hoisting a nuclear SC structure module according to any one of claims 1-5, wherein, The circular distributor includes an upper connecting part (11) and a lower disc part (12). The lower disc part (12) has several ring-shaped connecting ears on its lower side, and the other end of the sling (2) is connected to the connecting ears.

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