Rapidly replaced and assembled tower top hoisting device for large-span stay cable irregular tower top

Abstract

The utility model discloses a quick-replacing and assembling type tower top hoisting device for a large-span stay cable irregular tower top. Comprising cable bent towers, main beams, bearing beams, stiffening plates, inclined struts, pulley blocks, anchoring points, stand columns, transverse rods, inclined rods, transverse stiffening rods, inclined stiffening rods and transverse struts. The main beam, the stand column and the inclined strut are anchored on the cable bent tower through anchoring points, the force bearing beam is connected to the main beam, and the stiffening plates are connected to the two sides of the force bearing beam and connected to the main beam at the same time. And the pulley block is suspended on the bearing beam. According to the device, the tower top structure of the cable-stayed bridge tower can be fully utilized, and the device is suitable for irregular tower tops of various shapes and designs; the problem that the tower top crane of the irregular cable-stayed bridge tower is difficult to install is effectively solved, and the tower top crane has the advantages of being convenient to install, short in construction period and material-saving.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction facilities, in particular to a fast-changing assembled tower top hanging device for irregular tower tops of large-span inclined cables. Background Art

[0002] Cable-stayed bridges have the advantages of large spanning capacity, low material consumption, simple construction, and beautiful appearance. They have been widely and rapidly applied and developed in bridge construction at home and abroad. The cable system of a cable-stayed bridge is a crucial component of its structure and is responsible for bearing the main bridge load. However, as time goes by, due to the influence of environmental and traffic factors during the actual operation period, the performance of the cable will significantly decline. In order to ensure the operational safety of the bridge structure, the cable needs to be replaced when necessary.

[0003] The tower crane is the main lifting equipment for the tower top. During the cable-stayed cable replacement construction, it is used to lower the anchor head of the old cable tower to the bridge deck and lift the anchor head of the new cable tower to the cable sleeve mouth of the tower end for hanging. However, the early designs of cable-stayed bridge towers have various shapes and irregular tower top structures, which bring great difficulties to the installation of tower cranes. Traditional tower cranes are single in form and complex to install, which is difficult to meet construction requirements. Therefore, it is necessary to fully combine the different cable-stayed bridge tower top structures and design a tower crane device that can be applied to various types of tower top structures. Utility Model Content

[0004] In order to solve the problems in the background technology, the utility model provides a quick-replacement assembled tower top hanging device for irregular tower tops of large-span cable-stayed cables. The utility model can be applied to tower top structures of various types of irregular cable-stayed cables, can make full use of the tower top structures, has a simple structure, is easy to install, and has a short construction period. The utility model can be widely used in various types of cable-stayed cable replacement projects.

[0005] The technical solution adopted by the utility model is as follows:

[0006] The utility model discloses a quick-replacement assembly type tower top hanging device for irregular tower tops of large-span inclined cables, comprising:

[0007] The main beam comprises a main beam I and a main beam II arranged in parallel, the main beam I is installed on the top surface of the tower through a column, the main beam II is directly installed on the top surface of the tower, and both ends of the main beam extend outside the tower top and are connected to the two side surfaces of the tower top through a diagonal brace I;

[0008] A plurality of equally spaced transverse stiffeners Ⅰ are connected between the two main beams Ⅰ and Ⅱ;

[0009] Multiple load-bearing beams are symmetrically arranged on the left and right sides of the main beam, and the front and rear ends of the load-bearing beams are respectively connected to the main beam I and the main beam II.

[0010] The height of the tower top surface corresponding to the main beam II is higher than the height of the tower top surface corresponding to the main beam I.

[0011] The diagonal brace I and the main beam are connected with the diagonal brace II, and the diagonal brace I, the main beam and the diagonal brace II form a triangular structure.

[0012] A group of oblique stiffening rods II is connected between two adjacent transverse stiffening rods I on the left side of the main beam and between two adjacent transverse stiffening rods I on the right side, and the left and right groups of oblique stiffening rods II are symmetrically arranged; each group of oblique stiffening rods II consists of two oblique stiffening rods II, one end of the two oblique stiffening rods II is connected to the middle of one of the stiffening rods, and the other ends of the two oblique stiffening rods II are respectively connected to the front end and the rear end of the other stiffening rod.

[0013] The front and rear ends of the load-bearing beam are fixed above the main beam, and the front and rear ends of the transverse stiffening rod I are fixed on the inner side of the main beam.

[0014] Oblique stiffening plates are fixed on both sides of the end of the load-bearing beam, and the upper and lower ends of each stiffening plate are respectively connected to the load-bearing beam and the main beam; a pulley block is hung on the load-bearing beam.

[0015] Two diagonal rods and a transversely arranged cross bar are connected between the two columns supporting the main beam I; the two ends of the cross bar are respectively connected to the middle of the two columns; one end of one of the diagonal rods is connected to the connection position between the top of the column and the main beam I, and the other end is connected to the connection position between the cross bar and the column; one end of the other diagonal rod is connected to the bottom end of the column, and the other end is connected to the connection position between the cross bar and the column; a cross brace arranged parallel to the transverse stiffening rod I is connected between the column and the cable tower.

[0016] The main beam, diagonal brace I, columns and transverse braces are all fixed on the cable tower through anchor points.

[0017] The main beams, load-bearing beams, stiffening plates, diagonal braces, columns, cross bars, diagonal bars, transverse stiffening bars I, diagonal stiffening bars II and cross braces are all steel components, and the cross-sectional forms include but are not limited to I-beams, double I-beams, angle steels, and channel steels.

[0018] The beneficial effects of the utility model are:

[0019] The utility model can make full use of the top structure of the cable-stayed bridge tower and adapt to irregular tower tops of various shapes and designs. Through flexible adjustment, it can ensure that the equipment can effectively adapt to the replacement of cable-stayed cables of different structures; the device takes into account the special shape of the irregular tower top to ensure the safe and stable replacement of the cable-stayed cables.

[0020] The utility model helps to minimize potential risks and problems during construction, improve the safety of the project, and thus achieve efficient and safe cable replacement. It can greatly simplify the tower crane structure, effectively solve the problem of difficult installation of irregular cable-stayed bridge towers, and has the advantages of convenient installation, short construction period, and material saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is the main view of the utility model device Figure 1 .

[0022] Figure 2 It is the main view of the utility model device Figure 2 .

[0023] Figure 3 It is a top view of the device of the utility model.

[0024] Figure 4 It is a side view of the device of the utility model.

[0025] In the figure: 1. cable tower, 2. main beam I, 3. load-bearing beam, 4. stiffening plate, 5. diagonal brace I, 6. diagonal brace II, 7. pulley block, 8. anchor point, 9. column, 10. cross bar, 11. diagonal bar, 12. main beam II, 13. transverse stiffening rod I, 14. diagonal stiffening rod II, 15. cross brace. DETAILED DESCRIPTION

[0026] The utility model is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] like Figure 1~Figure 4 As shown, the utility model includes a cable tower 1, a main beam, a load-bearing beam 3, a stiffening plate 4, a diagonal brace, a pulley block 7, an anchor point 8, a column 9, a crossbar 10, a diagonal bar 11, a transverse stiffening rod 13, a diagonal stiffening rod 14 and a crossbar 15. The load-bearing beam 3 is connected to the main beam, and the stiffening plate 4 is connected to both sides of the load-bearing beam and the main beam at the same time; the pulley block 7 is suspended on the load-bearing beam 3. The main beam includes a main beam Ⅰ2 and a main beam Ⅱ12 arranged in parallel, the main beam Ⅰ2 is installed on the top surface of the cable tower 1 through the column 9, and the main beam Ⅱ12 is directly installed on the top surface of the cable tower 1. The two ends of the main beam extend outside the tower top and are connected to the two sides of the tower top through the diagonal brace Ⅰ5; the diagonal brace includes a diagonal brace Ⅰ5 and a diagonal brace Ⅱ6, and the diagonal brace Ⅱ6 is connected between the diagonal brace Ⅰ5 and the main beam, and the diagonal brace Ⅰ5, the main beam and the diagonal brace Ⅱ6 form a triangular structure.

[0028] The diagonal braces 5 , the columns 9 , and the transverse braces 15 are fixed on the cable tower 1 via the anchor points 8 .

[0029] The crossbar 10 and the cross brace 15 are connected to the column 9, and the diagonal bar 11 is connected to the column 9 and the main beam 12 to enhance the stability of the structure.

[0030] A plurality of equally spaced transverse stiffening rods Ⅰ13 are connected between the two main beams Ⅰ2 and the main beam Ⅱ12 to strengthen the connection between the main beams Ⅰ and Ⅱ.

[0031] The oblique stiffening rod 14 is connected between two different transverse stiffening rods 13 .

[0032] In a specific implementation, the form of the anchor point 8 includes but is not limited to chemical anchor bolts, and other anchoring methods are also within the scope of protection of this patent.

[0033] The main beam, load-bearing beam 3, stiffening plate 4, diagonal brace, column 9, cross bar 10, diagonal bar 11, transverse stiffening rod 13, diagonal stiffening rod 14 and cross brace 15 are all steel components, and the cross-sectional forms include but are not limited to I-beam, double I-beam, angle steel, channel steel, etc.

[0034] The pulley block 7 is a fixed pulley, 4 of which are arranged on both sides, and the position of the pulley can be adjusted along the direction of the load-bearing beam 3. Specific embodiments

[0035] First, each component is transported to the top of the tower by a small hoist. Then, it is installed in the following order:

[0036] First, install the column 9 and fix it to the cable tower 1 through the anchor point 8; then install the crossbar 10, the diagonal bar 11 and the cross brace 15, and the cross brace 15 is fixed to the cable tower 1 through the anchor point 8; then install the main beam Ⅰ2 and the main beam Ⅱ12, the main beam Ⅰ2 is connected to the column 9 and the diagonal bar 11, and the main beam Ⅱ12 is directly fixed to the cable tower 1 through the anchor point 8. Next, install the transverse stiffening rod Ⅰ13 and the diagonal stiffening rod Ⅱ14. Then connect the load-bearing beam 3 to the main beam Ⅰ2 and the main beam Ⅱ12, connect the stiffening plate 4, and hang the pulley block 7 on the load-bearing beam 3. Finally, install the diagonal brace Ⅰ5, fix one end of the diagonal brace Ⅰ5 to the cable tower 1 through the anchor point 8, and connect the other end to the end of the main beam, and then install the diagonal brace Ⅱ6 between the main beam and the diagonal brace Ⅰ5.

[0037] All connection forms of the utility model include but are not limited to welding and bolt connection, and other connection forms are also within the scope of protection of this patent. The arrangement of the main beam Ⅰ2 and the main beam Ⅱ12 includes but is not limited to the arrangement described in the utility model, which can be adjusted according to the tower top form of the cable-stayed bridge, and in principle, the original tower top structure is fully utilized. The arrangement of the column 9 includes but is not limited to the arrangement described in the utility model, which can be adjusted according to the tower top form of the cable-stayed bridge, and in principle, the original tower top structure is fully utilized.

Claims

1. A quick-change assembly tower top hanging device for irregular tower tops with large-span inclined cables, characterized in that: include: The main beam comprises a main beam I (2) and a main beam II (12) arranged in parallel, the main beam I (2) being mounted on the top surface of the cable tower (1) through a column (9), the main beam II (12) being directly mounted on the top surface of the cable tower (1), and both ends of the main beam extending outside the tower top and connected to two side surfaces of the tower top through a diagonal brace I (5); A plurality of equally spaced transverse stiffeners I (13) are connected between the two main beams I (2) and the main beam II (12); A plurality of load-bearing beams (3) are symmetrically arranged on the left and right sides of the main beam, and the front and rear ends of the load-bearing beams (3) are respectively connected to the main beam I (2) and the main beam II (12).

2. The quick-change assembly tower top hanging device for irregular tower tops with large-span inclined cables according to claim 1 is characterized in that: The height of the tower top surface corresponding to the main beam II (12) is higher than the height of the tower top surface corresponding to the main beam I (2).

3. The quick-change assembly tower top hanging device for irregular tower tops with large-span inclined cables according to claim 1 is characterized in that: A diagonal brace II (6) is connected between the diagonal brace I (5) and the main beam, and the diagonal brace I (5), the main beam and the diagonal brace II (6) form a triangular structure.

4. The quick-change assembly tower top hanging device for irregular tower tops with large-span inclined cables according to claim 1 is characterized in that: A group of oblique stiffening rods II (14) is connected between two adjacent transverse stiffening rods I (13) on the left side of the main beam and between two adjacent transverse stiffening rods I (13) on the right side, and the two groups of oblique stiffening rods II (14) on the left and right are symmetrically arranged; Each group of oblique stiffening rods II (14) is composed of two oblique stiffening rods II (14), one end of each of the two oblique stiffening rods II (14) is connected to the middle of one of the transverse stiffening rods I (13), and the other ends of the two oblique stiffening rods II (14) are respectively connected to the front end and the rear end of another transverse stiffening rod I (13).

5. The quick-change assembly tower top hanging device for irregular tower tops with large-span inclined cables according to claim 1 is characterized in that: The front and rear ends of the load-bearing beam (3) are fixed above the main beam, and the front and rear ends of the transverse stiffening rod I (13) are fixed inside the main beam.

6. The quick-change assembly tower top hanging device for irregular tower tops with large-span inclined cables according to claim 1 is characterized in that: Oblique stiffening plates (4) are fixed to the left and right sides of the end of the load-bearing beam (3), and the upper and lower ends of each stiffening plate (4) are respectively connected to the load-bearing beam (3) and the main beam; a pulley block (7) is suspended on the load-bearing beam (3).

7. The quick-change assembly tower top hanging device for irregular tower tops with large-span inclined cables according to claim 1 is characterized in that: Two oblique rods (11) and a transversely arranged crossbar (10) are connected between the two columns (9) supporting the main beam I (2); both ends of the crossbar (10) are respectively connected to the middle of the two columns (9); One end of one of the diagonal rods is connected to the connection position between the top end of the column (9) and the main beam I (2), and the other end is connected to the connection position between the cross bar (10) and the column (9); one end of the other diagonal rod is connected to the bottom end of the column (9), and the other end is connected to the connection position between the cross bar (10) and the column (9); A transverse brace (15) arranged parallel to the transverse stiffening rod I (13) is connected between the column (9) and the cable tower.

8. The quick-change assembly tower top hanging device for irregular tower tops with large-span inclined cables according to claim 1 is characterized in that: The main beam, diagonal brace I (5), column (9) and transverse brace (15) are all fixed to the cable tower (1) via anchor points (8).

9. The quick-change assembly tower top hanging device for irregular tower tops with large-span inclined cables according to claim 1, characterized in that: The main beam, load-bearing beam (3), stiffening plate (4), diagonal brace, column (9), cross bar (10), diagonal bar (11), transverse stiffening rod I (13), diagonal stiffening rod II (14) and cross brace (15) are all steel components, and the cross-sectional forms include but are not limited to I-beams, double I-beams, angle steels and channel steels.

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