A multi-lifting lug hoisting beam suitable for condenser installation construction

Abstract

The utility model discloses a kind of multi-lifting lug beam suitable for condenser installation construction, including hoisting beam main body, at least two pairs of lifting lug components are fixedly arranged on the hoisting beam main body, each pair of lifting lug components includes two lifting lugs, two lifting lugs are symmetrically arranged relative to the gravity line of hoisting beam main body, lifting lug is provided with a through-hole, multiple lifting lugs are sequentially arranged, the through-hole is arranged in front-back direction, front and rear side surface is fixedly arranged with hanging cable column, the hoisted object is connected with hanging cable column by sling, according to the gravity distribution of the hoisted object, different lifting lug combination is selected and crane hook is connected with soft connection hoisting, to ensure that the hoisted object is horizontal, to adapt to the requirement of condenser installation construction.

Description

Technical Field

[0001] This utility model belongs to the field of hoisting equipment technology, specifically relating to a multi-ear lifting beam suitable for condenser installation and construction. Background Technology

[0002] Due to the narrow installation space and the regulations prohibiting the swinging and collision of heavy objects, double slings must be used for lifting large and heavy objects. The angle between the line of action of the tension of the slings and the plumb line must not exceed 5º, and the swing amplitude must not exceed 500mm to ensure the safety and stability of the lifting.

[0003] Existing single-beam double-cable lifting beams typically have two lifting lugs symmetrically arranged along their center of gravity on the upper surface of the beam, i.e., a single-pair lifting lug beam. Two pairs of hanging cable posts are symmetrically arranged on both sides of the beam along its center of gravity. Long materials are flexibly connected to the hanging cable posts via slings. The axis of the lifted long material is consistent with the left and right direction of the beam. However, for large and heavy objects, such as condensers, the center of gravity may not coincide with the midpoint of its axis, which can lead to the lifting center of gravity of the beam not coinciding with the center of gravity of the lifted object. This can even cause serious tilting during lifting, potentially resulting in safety accidents. The lifting center of gravity of a single-pair lifting lug beam is located on the vertical midline of the horizontal line connecting the length of the beam, and is fixed and cannot be adjusted, making it unsuitable for condenser installation and construction specifications. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model optimizes and improves the existing single-pair lifting lug beam to form a multi-lug lifting beam suitable for condenser installation and construction, so as to adapt to the special application scenario of nuclear power condenser lifting and installation construction. Specifically, it is achieved through the following technical solution:

[0005] A multi-lug lifting beam suitable for condenser installation includes a main body. At least two pairs of lug assemblies are fixedly installed on the main body. Each pair of lug assemblies includes two lugs, which are symmetrically arranged relative to the center line of gravity of the main body. The lugs have through holes for cable threading. Multiple lugs are arranged sequentially along the length of the main body, with the through holes arranged in a front-to-back direction.

[0006] Two pairs of cable-stayed column assemblies are fixedly installed on the main body of the lifting beam. Each pair of cable-stayed column assemblies includes two cable-stayed columns, one on each of the front and rear sides of the main body of the lifting beam. The two pairs of cable-stayed column assemblies are symmetrically arranged on the left and right sides relative to the center line of gravity of the main body of the lifting beam. The object being lifted is connected to the cable-stayed columns through slings.

[0007] Furthermore, a limiting post is fixedly installed at the end of the cable-hanging post, and the cable-hanging post and the limiting post are fixedly connected to form a cross shape. The limiting post can prevent the sling from slipping off the cable-hanging post.

[0008] Furthermore, in the two adjacent pairs of lifting lug assemblies, the two lifting lugs located at the same end of the main body of the lifting beam are arranged close together, that is, the distance between the cable through holes of the two lifting lugs is small, which facilitates precise adjustment so that the lifting center of gravity of the lifting beam coincides with the center of gravity of the object being lifted.

[0009] Furthermore, the end face of the main body of the lifting beam is rectangular or I-shaped to meet the strength requirements.

[0010] Furthermore, the center of gravity line of the main body of the lifting beam is marked on both the front and rear sides, and the marked line is located in the middle of the length direction of the main body of the lifting beam.

[0011] The beneficial effects of this utility model are:

[0012] The multiple pairs of lifting lugs and lifting beams of this utility model can select different combinations of lifting lugs and connect them to the crane hook for lifting according to the center of gravity distribution of the object being lifted, so that the lifting center of gravity of the lifting beam coincides with the center of gravity of the object being lifted, thus preventing safety accidents such as tilting of the object. Attached Figure Description

[0013] Figure 1 This is an isometric view of the lifting beam of the two pairs of lifting lug assemblies in Embodiment 1;

[0014] Figure 2 A schematic diagram illustrating the lifting of a long material with its center of gravity slightly to the left;

[0015] Figure 3 A schematic diagram of lifting a long material with its center of gravity slightly to the right;

[0016] Figure 4 This is an isometric view of the lifting beam of the three pairs of lifting lug assemblies in Embodiment 2;

[0017] In the diagram, 100 represents the main body of the lifting beam, 101a represents the first left lifting lug, 101b represents the first right lifting lug, 102a represents the second left lifting lug, 102b represents the second right lifting lug, 103a represents the third left lifting lug, 103b represents the third right lifting lug, 104 represents the cable-hanging post, 105 represents the limiting post, 106 represents the center of gravity line, 200 represents the long material being lifted, and 201 represents the center of gravity of the long material being lifted. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example 1

[0019] In order to make the lifting center of gravity of the lifting beam coincide with the center of gravity of the suspended object, at least one pair of lifting lugs are added to the upper surface of the lifting beam. In this embodiment, the upper surface of the lifting beam has two pairs of lifting lugs.

[0020] Please see Figure 1-3 In this embodiment, the main body 100 of the lifting beam is a rectangular steel structure. There are marking lines on the front and rear sides of the main body 100 of the lifting beam. In the figure, the black vertical solid line is the marking line. The marking line is located in the middle of the length direction of the main body 100 of the lifting beam. It is the vertical midline of the length direction of the main body 100 of the lifting beam. The center of gravity of the main body 100 of the lifting beam coincides with the marking line. The marking line is also the center of gravity line 106 of the main body 100 of the lifting beam.

[0021] Two pairs of cable-hanging column assemblies are installed on the front and rear sides of the main body 100 of the lifting beam. Each pair of cable-hanging column assemblies has two cable-hanging columns 104, one on each of the front and rear sides. The two pairs of cable-hanging column assemblies are symmetrically arranged about the left and right sides relative to the center line 106. One pair on each side is fixedly connected to the main body 100 of the lifting beam. The object being lifted is connected to the cable-hanging column 104 through the sling. If the object being lifted is a long material, its axis is consistent with the length direction of the main body 100 of the lifting beam. To prevent the sling from slipping off the cable-hanging column 104, a limiting column 105 is fixedly installed at the end of the cable-hanging column 104. The structure after the cable-hanging column 104 and the limiting column 105 are fixedly connected forms a cross shape when viewed from above. The sling hangs between the limiting column 105 and the front or rear side of the main body 100 of the lifting beam.

[0022] Two pairs of lifting lug assemblies are fixedly installed on the upper surface of the main body 100 of the lifting beam. Each pair of lifting lug assemblies includes two lugs, which are symmetrically arranged about 106 relative to the center line 106 of the main body 100 of the lifting beam. Each lug has a cable-passing hole, and the lugs are arranged sequentially with the cable-passing holes arranged in a front-to-back direction. The first pair of lifting lug assemblies consists of a first left lug 101a and a first right lug 101b; the second pair consists of a second left lug 102a and a second right lug 102b. At the left end of the main body of the lifting beam, the second left lug 102a and the first left lug 101a are arranged sequentially from left to right; at the right end of the main body of the lifting beam, the second right lug 102b and the first right lug 101b are arranged sequentially from right to left. In adjacent pairs of lifting lug assemblies, the two lugs located at the same end of the main body of the lifting beam are arranged close together.

[0023] Please see Figure 2 and 3 The two black diagonal solid lines in the figure represent the lifting slings, which are connected to the crane hook; the black vertical dashed line represents the lifting center of gravity line. In the figure, the long material being lifted 200 has a center of gravity mark pattern 201.

[0024] Please see Figure 2If the center of gravity of the long material is biased to the left, one lifting sling is threaded through the sling through hole of the second left lifting lug 102a, and the other lifting sling is threaded through the sling through hole of the first right lifting lug 101b. After the long material 200 is lifted, the lifting center of gravity line coincides with the center of gravity mark pattern 201 of the long material, so that the axis of the long material 200 is kept horizontal, and the lifted material is transported smoothly.

[0025] Please see Figure 3 If the center of gravity of the long material is biased to the right, one lifting sling is inserted through the sling through hole of the second left lifting lug 101a, and the other lifting sling is inserted through the sling through hole of the first right lifting lug 102b. After the long material 200 is lifted, the lifting center of gravity line coincides with the center of gravity mark pattern 201 of the long material, so that the axis of the long material 200 is kept horizontal, and the lifted material is transported smoothly.

[0026] If the center of gravity of the long material is neither to the left nor to the right, and the center of gravity marker pattern 201 of the long material being lifted is located at the center point of the axis, then one lifting sling is threaded through the sling through hole of the second left lifting lug 101a, and the other lifting sling is threaded through the sling through hole of the first right lifting lug 101b, or one lifting sling is threaded through the sling through hole of the second left lifting lug 102a, and the other lifting sling is threaded through the sling through hole of the first right lifting lug 102b. The axis of the long material 200 being lifted remains horizontal, so that the lifted object is lifted and transported smoothly. Example 2

[0027] The difference between this embodiment and Embodiment 1 is that the upper surface of the main body 100 of the lifting beam has three pairs of lifting lug assemblies.

[0028] like Figure 4 As shown, the three pairs of lifting lug assemblies are as follows: the first pair consists of a first left lifting lug 101a and a first right lifting lug 101b; the second pair consists of a second left lifting lug 102a and a second right lifting lug 102b; and the third pair consists of a third left lifting lug 103a and a third right lifting lug 103b. On the left end of the main body of the lifting beam, the third left lifting lug 103a, the second left lifting lug 102a, and the first left lifting lug 101a are arranged sequentially from left to right. On the right end of the main body of the lifting beam, the third right lifting lug 103b, the second right lifting lug 102b, and the first right lifting lug 101b are arranged sequentially from right to left.

[0029] If the center of gravity of the long material is biased to the left, there are three combinations of lifting slings: the third left lifting lug 103a with the first right lifting lug 101b, the third left lifting lug 103a with the second right lifting lug 102b, and the second left lifting lug 102a with the third right lifting lug 103b. If the center of gravity of the long material is biased to the left, there are also three combinations of lifting slings: the third right lifting lug 103b with the first left lifting lug 101a, the third right lifting lug 103b with the second left lifting lug 102a, and the second right lifting lug 102b with the third left lifting lug 103a.

[0030] If the center of gravity of the long material is neither to the left nor to the right, and the center of gravity marker pattern 201 of the long material being lifted is located at the center point of the axis, then there are three combinations of lifting sling threading methods, namely, the third left lifting lug 103a and the third right lifting lug 103b, the second left lifting lug 102a and the second right lifting lug 102b, and the first left lifting lug 101a and the first right lifting lug 101b.

[0031] The axis of the long material being lifted 200 is kept horizontal, so that the material is lifted and transported smoothly. Compared with Example 2, the range of adjustment of the lifting center of gravity is larger in this embodiment.

[0032] Other embodiments include an upper surface of the main body 100 of the lifting beam consisting of four pairs of lifting lugs, with the lifting sling threading method being analogous to the combination in embodiments one and two, and the range of adjustment of the lifting center of gravity being larger than that in embodiments one and two.

[0033] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A multi-lug lifting beam suitable for condenser installation and construction, characterized in that, Includes the main body of the lifting beam, on which at least two pairs of lifting lug assemblies are fixedly installed; Each pair of lifting lugs includes two lifting lugs, which are symmetrically arranged on the left and right sides relative to the center line of gravity of the main body of the lifting beam. The lifting lugs are provided with cable through holes. Multiple lifting lugs are arranged sequentially along the length of the main body of the lifting beam, and the cable through holes are arranged in the front and back direction. Two pairs of cable-stayed column assemblies are fixedly installed on the main body of the lifting beam. Each pair of cable-stayed column assemblies includes two cable-stayed columns, one on each of the front and rear sides of the main body of the lifting beam. The two pairs of cable-stayed column assemblies are symmetrically arranged on the left and right sides relative to the center line of gravity of the main body of the lifting beam. The object being lifted is connected to the cable-stayed columns through slings.

2. The multi-lug lifting beam suitable for condenser installation and construction according to claim 1, characterized in that, A limiting post is fixedly installed at the end of the hanging cable post.

3. The multi-lug lifting beam suitable for condenser installation and construction according to claim 1, characterized in that, In the two adjacent pairs of lifting lug assemblies, the two lifting lugs located at the same end of the main body of the lifting beam are arranged close together.

4. The multi-lug lifting beam suitable for condenser installation and construction according to claim 1, characterized in that, The end face of the main body of the lifting beam is rectangular or I-shaped.

5. The multi-lug lifting beam suitable for condenser installation and construction according to any one of claims 1-3, characterized in that, The center of gravity line of the main body of the lifting beam is marked on both the front and rear sides, and the marked line is located in the middle of the length direction of the main body of the lifting beam.

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