Fabricated cable bent tower stiff framework

Abstract

The utility model belongs to the technical field of bridge engineering cable bent tower construction, and particularly relates to an assembled cable bent tower stiff framework. The utility model provides an assembled cable bent tower stiff skeleton which comprises a plurality of stiff skeleton units and parallel connection units used for connecting the stiff skeleton units. Each stiff skeleton unit comprises a quadrilateral frame, two rotary connecting assemblies arranged at the two opposite inner corners of the quadrilateral frame respectively, and a telescopic sleeve rod with the two ends connected with the two rotary connecting assemblies respectively, so that the situation that the whole stiff skeleton is difficult to hoist is effectively avoided, the fabricated construction of the stiff skeleton is achieved, and the construction efficiency is improved. The assembly mode is simple, the application scene is diversified, and adjustment can be conducted according to the actual site situation.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge engineering cable tower construction, in particular to an assembled cable tower rigid skeleton. Background Art

[0002] Cable towers, the primary load-bearing structures of long-span cable-stayed and suspension bridges, are primarily constructed of concrete. The rigid skeleton structure of cable-stayed bridge towers is a truss structure assembled from steel sections, designed to ensure the tower's external dimensions, the attachment and forming of various components such as rebar, and the positioning of formwork. Its structure, strength, rigidity, and stability directly impact the quality and safety of the tower's construction. Due to factors such as the inclination of the tower column, a rigid skeleton is used in the tower column construction to provide sufficient construction surface while meeting the structural load requirements and satisfying the rigidity requirements of cable-stayed bridge towers.

[0003] The rigid frame serves as a guide for cable tower construction, steel bar positioning, formwork fixation, and pre-embedded positioning. Therefore, high strength and stability are required for the rigid frame. Existing rigid frames are conventionally prefabricated and hoisted as a whole. However, as the span of the bridge increases, the cross-sectional size of the cable tower increases, with the long side varying from 16 meters. Therefore, large-scale lifting and hoisting equipment is required for the overall hoisting of the frame. Furthermore, to prevent structural deformation, the rigid frame requires a complex structure, high processing precision, and low efficiency.

[0004] The Chinese utility model patent with patent publication number CN204715211U and publication date 2015.10.21 discloses a rigid frame and a cable tower construction structure using the rigid frame, including: an inner frame, an outer frame formed on the periphery of the inner frame, and a connecting cross bar that fixes the inner frame and the outer frame. The inner frame and the outer frame are both composed of a plurality of frame columns and a plurality of horizontally arranged frame parallels that connect the plurality of frame columns. Each of the frame columns and the frame parallels are made of steel sections, and a plurality of first diagonal braces are provided between the top ends of the inner frame and the outer frame.

[0005] The general usage and advantages of the rigid frame in this Chinese utility model patent are as follows: providing lifting points for the crane to lift through the sling and for fixing the steel bar segments for tower casting, the rigid frame includes a cage-shaped inner frame and an outer frame formed on the periphery of the inner frame, the inner frame and the outer frame are fixed with a number of connecting cross bars, and a number of first diagonal braces are provided between the top ends of the inner frame and the outer frame; the rigid frame in the utility model is formed by fixing multiple frames, and has the characteristics of "rigid top and soft bottom", which can prevent the rigid frame from being deformed during the lifting process, thereby affecting the quality of the project.

[0006] However, during actual use, the rigid frame still has at least the following shortcomings, in other words, these are the technical problems to be solved by the present invention: although the rigid frame can provide stable support to prevent deformation, the construction process of a single frame is very complicated, and the connection angles of the multiple frames constituting the rigid frame are very diverse, which are difficult to control during the construction process. Once an error occurs, it cannot be adjusted in time, resulting in low construction efficiency.

[0007] Therefore, in summary, there is an urgent need for a rigid frame with efficient construction method and multiple connection angles to solve such problems. Utility Model Content

[0008] The utility model provides an assembled cable tower rigid frame, comprising a plurality of rigid frame units and a parallel connection unit for connecting the rigid frame units, the rigid frame unit comprising a quadrilateral frame, two rotating connection components respectively arranged at two opposite inner corners of the quadrilateral frame, and a telescopic sleeve rod with two ends respectively connected to the two rotating connection components, so that: the utility model effectively avoids the situation where the overall rigid frame is difficult to hoist, realizes the assembled construction of the rigid frame, has a simple assembly method, is applicable to a variety of scenarios, and can be adjusted according to actual conditions on site.

[0009] The technical solution adopted by the present invention to solve the above problems is: an assembled cable tower rigid frame, including multiple rigid frame units, and a parallel connection unit arranged between the rigid frame units; the rigid frame unit includes a quadrilateral frame, two rotating connection components respectively arranged at two opposite inner corners of the quadrilateral frame, and telescopic sleeves with two ends respectively connected to the two rotating connection components.

[0010] A further preferred technical solution is that the quadrilateral frame includes two connecting rod groups arranged opposite to each other to form a quadrilateral, the connecting rod groups include two connecting rods with hinged ends, and the ends of the connecting rods other than the hinged ends are fixed ends.

[0011] A further preferred technical solution is that the rotating connection assembly includes two connecting plates arranged at the hinges of the two connecting rods, two first through holes arranged on the two connecting plates, a first threaded rod passing through the two first through holes to connect the two connecting plates, a rotating plate sleeved on the first threaded rod and located between the two connecting plates, and two first limit nuts screwed on the first threaded rod and respectively located at the side ends of the two connecting plates.

[0012] A further preferred technical solution is that the telescopic sleeve includes an outer rod, an inner connecting rod arranged inside the outer rod, and two connecting members respectively arranged on ends of the outer rod and the inner connecting rod that are relatively far away and connected to the rotating plate.

[0013] A further preferred technical solution is that the connecting member includes an extension plate arranged on the end of the outer rod or the inner rod, a second through hole arranged on the extension plate, a third through hole arranged on the rotating plate, a second threaded rod passing through the second through hole and the third through hole, and two second limit nuts screwed on the second threaded rod.

[0014] A further preferred technical solution is that the outer rod is an internally threaded cylinder, and the inner connecting rod is an externally threaded rod.

[0015] A further preferred technical solution is that: the telescopic sleeve rod further includes scale lines respectively arranged on the outer rod and the inner rod.

[0016] A further preferred technical solution is that the rigid skeleton unit further includes positioning grooves and positioning protrusions respectively arranged on two parallel sides of the quadrilateral frame.

[0017] A further preferred technical solution is that: the rigid skeleton unit further includes a through groove provided on the positioning protrusion.

[0018] A further preferred technical solution is that the parallel connection unit includes connecting angle steels arranged between the rigid skeleton units. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is an overall top view of the utility model;

[0020] Figure 2 This is a front view of the rigid skeleton unit connection of the present invention;

[0021] Figure 3 This is a front view of the rigid skeleton unit of the present utility model;

[0022] Figure 4 This is a side view of the rotary connection assembly of the present utility model;

[0023] Figure 5 It is a side view of the connecting piece of the present invention.

[0024] In the figures, the meanings of the reference numerals are as follows:

[0025] Rigid skeleton unit 1, parallel connection unit 2, connecting plate 3;

[0026] The rectangular frame 11, the rotating connecting assembly 12, the telescopic sleeve 13, the positioning groove 14, the positioning protrusion 15, and the through slot 16;

[0027] Connecting rod assembly 111, connecting plate 121, first through hole 122, first threaded rod 123, rotating plate 124, first limiting nut 125, outer rod 131, inner rod 132, connecting piece 133, scale line 134;

[0028] Connecting rod 1111 , extension plate 1331 , second through hole 1332 , third through hole 1333 , second threaded rod 1334 , second limiting nut 1335 . DETAILED DESCRIPTION

[0029] The following describes the embodiments of the present invention in detail with reference to the accompanying drawings. The following descriptions are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention.

[0030] The directional terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or may be mentioned in this specification are defined relative to the structures shown in the drawings. The words "inside" and "outside" refer to the directions toward or away from the geometric center of a specific component, respectively. They are relative concepts and may therefore change accordingly according to their different positions and different usage states. Therefore, these or other directional terms should not be interpreted as restrictive terms.

[0031] Example 1

[0032] As attached Figure 1-2 As shown, an assembled cable tower rigid frame includes multiple rigid frame units 1 and parallel connection units 2 arranged between the rigid frame units 1; the rigid frame unit 1 includes a quadrilateral frame 11, two rotating connection components 12 respectively arranged at two opposite inner corners of the quadrilateral frame 11, and a telescopic sleeve rod 13 with two ends respectively connected to the two rotating connection components 12.

[0033] In this embodiment, the general method of using the assembled cable tower rigid frame is as follows:

[0034] The number and angle of the rigid frame units 1 are planned according to the project conditions. During the construction process, the rigid frame units 1 are connected using the parallel connection units 2 to form an overall rigid frame. For the convenience of construction, the rigid frame unit 1 is mainly composed of a quadrilateral frame 11. The rotating connection components 12 arranged at the relative inner corners make the angle of the quadrilateral frame 11 adjustable. At the construction site, the length of the telescopic sleeve 13 arranged on the diagonal of the quadrilateral frame 11 is adjusted according to the situation, thereby achieving the fixation of the angle of the quadrilateral frame 11; in this embodiment, the quadrilateral frame 11 is installed first and then the telescopic sleeve 13 is installed.

[0035] As a preferred embodiment of this embodiment, the rigid skeleton unit 1 also includes positioning grooves 14 and positioning protrusions 15 respectively arranged on two parallel sides of the quadrilateral frame 11, and a through groove 16 arranged on the positioning protrusion 15; the parallel connection unit 2 includes connecting angle steels arranged between the rigid skeleton units 1.

[0036] In this embodiment, the fixed quadrilateral frame 11 uses a sling to lift the rigid skeleton unit 1 through the through slot 16, and the positioning groove 14 on the upper rigid unit skeleton 1 is inserted into the positioning protrusion 15 on the lower rigid unit skeleton 1. The position of the positioning groove 14 on the quadrilateral frame corresponds to the position of the positioning protrusion 15, so that the rigid skeleton unit can be quickly positioned and then fixed and welded, which greatly improves work efficiency; the flat connection unit 2 includes connecting angle steels for connecting multiple rigid skeleton units 1 to each other to form an inner skeleton and an outer skeleton.

[0037] The specific construction method of the rigid skeleton includes the following steps:

[0038] The first step is to plan the number, angle, and size of the planar rigid skeleton units based on the shape and outer dimensions of the project tower.

[0039] The second step is to arrange the rigid skeleton units and assemble them, where the materials are set based on their own structure, strength, stiffness and stability.

[0040] The third step is to measure and lay out, locate the rigid frame units around the tower according to the tower plane position, make adjustments after pre-installation according to the actual situation, and weld and fix them;

[0041] The fourth step is to weld and position the rigid frame units firmly, and then connect the rigid frame units into a whole by connecting angle steel as a flat unit;

[0042] The fifth step is to carry out steel bar positioning and binding construction, embedded parts positioning construction, etc. according to the rigid skeleton.

[0043] Example 2

[0044] As attached Figure 3-5 As shown, the details are as follows:

[0045] The quadrilateral frame 11 includes two connecting rod groups 111 that are relatively arranged to form a quadrilateral, and the connecting rod group 111 includes two connecting rods 1111 with hinged ends, and the connecting rod 1111 is a fixed end other than the hinged end; the telescopic sleeve rod 13 includes an outer rod 131, an inner connecting rod 132 arranged in the outer rod 131, two connecting members 133 respectively arranged on the relatively distant ends of the outer rod 131 and the inner connecting rod 132 and connected to the rotating plate 124, and scale lines 134 respectively arranged on the outer rod 131 and the inner connecting rod 132, the outer rod 131 is an internally threaded cylinder, and the internal connecting rod 132 is an externally threaded rod.

[0046] In this embodiment, a more stable and convenient construction method is disclosed, in which the quadrilateral frame is divided into two relative connecting rod groups 111 with the diagonal axis as the axis, and each connecting rod group 111 includes two connecting rods 1111 whose ends are hinged to each other, and a rotating connecting component 12 is provided at the hinge of the connecting rod 1111. Therefore, during the construction process, it is only necessary to hinge the two connecting rods 1111 to each other and then connect the rotating connecting components 12 at the hinge of the two connecting rod groups 111 to each other using a telescopic sleeve 13 to achieve preliminary fixation, and then adjust the length of the telescopic sleeve 13 to the length at the planned angle, and finally weld the two fixed ends of the two connecting rod groups 111 to complete the assembly of a rigid skeleton unit 1; the telescopic sleeve 13 is preferably an inner connecting rod 132 with an external thread and an outer connecting rod 131 with an internal thread. The overall length of the telescopic sleeve 13 is adjusted by rotation to achieve continuous length adjustment, and the scale line 134 is used to accurately control the length of the telescopic sleeve.

[0047] As a preference of this embodiment, the rotating connection assembly 12 includes two connecting plates 121 arranged at the hinges of the two connecting rods 1111, two first through holes 122 arranged on the two connecting plates 121, a first threaded rod 123 passing through the two first through holes 122 to connect the two connecting plates 121, a rotating plate 124 sleeved on the first threaded rod 123 and located between the two connecting plates 121, and two first limiting nuts 125 screwed on the first threaded rod 123 and respectively located at the side ends of the two connecting plates 121.

[0048] In this embodiment, the specific structure of the rotating connection assembly 12 is disclosed. The first threaded rod 123 passes through one of the connecting plates 121, the rotating plate 124, and then through the other connecting plate 121 in sequence, forming a three-layer structure that fixes the rotating plate 124 in the middle. The two first limiting nuts 125 are respectively screwed on the two ends of the first threaded rod 123. When the rotating plate 124 completes the rotation, the two first limiting nuts 125 are rotated to stop them respectively on the surfaces of the two connecting plates 121 to complete the fixation.

[0049] As a preferred embodiment of this embodiment, the connecting member 133 includes an extension plate 1331 arranged on the end of the outer rod 131 or the inner rod 132, a second through hole 1332 arranged on the extension plate 1331, a third through hole 1333 arranged on the rotating plate 124, a second threaded rod 1334 passing through the second through hole 1332 and the third through hole 1333, and two second limiting nuts 1335 screwed on the second threaded rod 1334.

[0050] In this embodiment, the specific structure of the connecting member 133 for connecting the telescopic sleeve 13 and the rotating connection assembly 12 is disclosed; extension plates 1331 are respectively provided at both ends of the telescopic sleeve 13 for connecting with the rotating plate 124 in the rotating connection assembly 12, and after the second threaded rod 1334 passes through the extension plate 1331 and the rotating plate 124, the two second limit nuts 1335 provided at both ends of the second threaded rod 1334 are rotated until they stop at the surfaces of the extension plate 1331 and the rotating plate 124.

[0051] Compared with the existing technology, the technical solution described in this application has the following advantages: by pre-assembling the frame on the ground, fine-tuning the length and inclination during the construction process and then welding and fixing it, the construction efficiency is greatly improved, and the mismatch caused by errors in the prefabricated frame during the construction process is avoided. This solution can be adjusted in time according to actual conditions, which improves the construction effect as a whole, thereby further improving the stability of the rigid frame.

[0052] While the embodiments of the present invention have been described in detail above with reference to the accompanying drawings, the present invention is not limited to the embodiments described above. Various modifications are possible within the scope of knowledge possessed by a person skilled in the art without departing from the spirit of the present invention. These modifications are non-inventive and are protected by patent law as long as they fall within the scope of the claims of the present invention.

Claims

1. An assembled cable tower rigid frame, characterized by: The invention comprises a plurality of rigid frame units (1), and a parallel connection unit (2) arranged between the rigid frame units (1); the rigid frame unit (1) comprises a quadrilateral frame (11), two rotating connection components (12) respectively arranged at two opposite inner corners of the quadrilateral frame (11), and a telescopic sleeve rod (13) with two ends respectively connected to the two rotating connection components (12).

2. The assembled cable tower rigid frame according to claim 1, characterized in that: The quadrilateral frame (11) comprises two connecting rod groups (111) arranged opposite to each other to form a quadrilateral, the connecting rod group (111) comprising two connecting rods (1111) with hinged ends, and the ends of the connecting rods (1111) other than the hinged ends are fixed ends.

3. The assembled cable tower rigid frame according to claim 2, characterized in that: The rotating connection assembly (12) includes two connecting plates (121) arranged at the hinged joints of the two connecting rods (1111), two first through holes (122) arranged on the two connecting plates (121), a first threaded rod (123) passing through the two first through holes (122) to connect the two connecting plates (121), a rotating plate (124) sleeved on the first threaded rod (123) and located between the two connecting plates (121), and two first limiting nuts (125) screwed on the first threaded rod (123) and respectively located at the side ends of the two connecting plates (121).

4. The assembled cable tower rigid frame according to claim 3, characterized in that: The telescopic sleeve rod (13) comprises an outer rod (131), an inner connecting rod (132) arranged inside the outer rod (131), and two connecting members (133) respectively arranged at ends of the outer rod (131) and the inner connecting rod (132) that are relatively far apart and connected to the rotating plate (124).

5. The assembled cable tower rigid frame according to claim 4, characterized in that: The connecting member (133) includes an extension plate (1331) arranged on the end of the outer rod (131) or the inner rod (132), a second through hole (1332) arranged on the extension plate (1331), a third through hole (1333) arranged on the rotating plate (124), a second threaded rod (1334) passing through the second through hole (1332) and the third through hole (1333), and two second limiting nuts (1335) screwed on the second threaded rod (1334).

6. The assembled cable tower rigid frame according to claim 4, characterized in that: The outer rod (131) is an internally threaded cylinder, and the inner connecting rod (132) is an externally threaded rod.

7. The assembled cable tower rigid frame according to claim 4, characterized in that: The telescopic sleeve rod (13) further comprises scale lines (134) respectively arranged on the outer rod (131) and the inner connecting rod (132).

8. The assembled cable tower rigid frame according to claim 1, characterized in that: The rigid skeleton unit (1) further comprises a positioning groove (14) and a positioning protrusion (15) respectively arranged on two mutually parallel sides of the quadrilateral frame (11).

9. The assembled cable tower rigid frame according to claim 8, characterized in that: The rigid skeleton unit (1) further comprises a through slot (16) provided on the positioning protrusion (15).

10. The assembled cable tower rigid frame according to claim 1, characterized in that: The parallel connection unit (2) comprises connecting angle steels arranged between the rigid skeleton units (1).

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