A multi-radial cable compression tensioning mechanism

Abstract

This application provides a compression tensioning mechanism for multi-radial cables to solve the problems of low tensioning efficiency and poor consistency of radial cable stress after tensioning caused by the need for multiple tensioning operations in existing double-layer multi-radial cable net structures. It includes an upper and lower compression plate arranged coaxially and symmetrically, and several screws arranged in a circular array along the axis of the upper compression plate. Locking nuts are threaded to the upper and lower parts of the screws, and the upper and lower compression plates are slidably fitted onto the screws between the two locking nuts. The middle of the upper and lower radial cables to be tensioned is located between the upper and lower compression plates. A pushing module for driving the upper and lower compression plates to move in opposite directions is provided on the screws outside the upper and / or lower compression plates. This application simultaneously tensions several upper and lower radial cables using symmetrically arranged upper and lower compression plates, resulting in high tensioning efficiency and good consistency of stress on the radial cables after tensioning.

Description

Technical Field

[0001] This invention relates to the field of tensioning mechanisms for prestressed cables, and in particular to a compression tensioning mechanism for multi-radial cables. Background Technology

[0002] To accommodate as many solar panels as possible, floating solar power platforms require a large surface area, resulting in relatively large platform dimensions. Framed steel structures are unsuitable for floating solar power platforms due to their heavy weight and high cost. Prestressed cable net structures, on the other hand, offer strong spanning capabilities and are lightweight, making them an ideal structural form for floating solar power platforms. Especially with carbon fiber replacing steel cables, prestressed cable net structures are more resistant to seawater corrosion and have a longer lifespan.

[0003] However, the tensioning of the prestressed cable net structure is the most important and critical forming process of this structural system. If the tensioning method of a single cable is used, the construction period is long, the process is complex, the cost is high, and the efficiency is low. Therefore, innovative forming processes and equipment need to be adopted according to the structural characteristics. Summary of the Invention

[0004] The purpose of this invention is to provide a compression tensioning mechanism for multi-radial cables. This addresses the technical problems of low tensioning efficiency and poor consistency of stress on radial cables after tensioning, which are caused by the need for multiple tensioning operations in existing double-layer multi-radial cable net structures.

[0005] A multi-radial cable compression tensioning mechanism includes an upper compression plate and a lower compression plate arranged coaxially and symmetrically, and a plurality of screws arranged in a ring array along the axis of the upper compression plate;

[0006] The axes of several screws are parallel to the axis of the upper extrusion disc. The upper and lower parts of the screws are threaded with locking nuts. The upper and lower extrusion discs are slidably sleeved on the screws between the two locking nuts.

[0007] Optionally, the radial cables to be tensioned include upper radial cables and lower radial cables;

[0008] The middle parts of the upper radial cable and the lower radial cable are located between the upper extrusion plate and the lower extrusion plate. The middle part of the upper radial cable is pressed against the inner end face of the upper extrusion plate, and the middle part of the lower radial cable is pressed against the inner end face of the lower extrusion plate. A tensioning gap is provided between the inner end faces of the upper extrusion plate and the lower extrusion plate.

[0009] Optionally, a pusher module for driving the upper and / or lower extrusion plates to move in opposite directions is provided on the screw outside the upper extrusion plate and / or lower extrusion plate.

[0010] Optionally, the jacking module includes a hollow frame, a through-type jack, and an anchoring nut arranged sequentially on the screw.

[0011] The hollow frame and the through-hole jack are slidably sleeved on the screw rod. The front end of the hollow frame is pressed against the outer end face of the upper or lower extrusion plate, and the front end of the through-hole jack is pressed against the rear end of the hollow frame. The anchoring nut is threadedly connected to the screw rod at the rear end of the through-hole jack.

[0012] Optionally, the hollow frame is a U-shaped frame, and the hollow frame includes a horizontal plate and two vertical plates connected to both ends of the horizontal plate;

[0013] The horizontal plate has a through hole for the screw to pass through, the front ends of the two vertical plates abut against the outer end face of the upper or lower extrusion plate, and the locking nut is located between the two vertical plates.

[0014] Optionally, guide radii are provided on the inner end faces of both the upper and lower extrusion discs.

[0015] Optionally, when the radial cable tensioning is complete, adjust the locking nut to abut against the outer end faces of the upper and lower extrusion plates.

[0016] Optionally, the number of upper radial cables and lower radial cables is greater than or equal to that of the other two types of cables, and a plurality of upper radial cables and lower radial cables are arranged along a circular array.

[0017] Because of the adoption of the above technical solution, the present invention has the following advantages:

[0018] 1. This application utilizes symmetrically arranged upper and lower extrusion discs to simultaneously tension multiple upper and lower radial cables. It features a simple structure, convenient operation, and high construction efficiency.

[0019] 2. This application achieves synchronous growth of tension in all cables through the relative movement of the upper and lower compression plates, resulting in high coordination and synchronization. This avoids the cumbersome cable synchronization methods required by traditional methods, such as displacement gauges and force gauges, and is not only more efficient but also faster in construction.

[0020] 3. After the tensioning is completed, the relative positions of the upper and lower extrusion plates are limited by the locking nut, and the hollow frame, through-hole jack and anchor nut are disassembled so that the hollow frame, through-hole jack and anchor nut can be reused, which can save costs significantly.

[0021] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0022] The accompanying drawings of this invention are described below.

[0023] Figure 1 This is a schematic diagram of the extrusion tensioning mechanism of the present invention.

[0024] Figure 2 This is a schematic diagram of the hollow frame structure of the present invention.

[0025] Figure 3 This is a schematic diagram of the structure of the extrusion disc of the present invention.

[0026] Figure 4 This is a schematic diagram of the structure of the top-pushing module after the tensioning is completed and disassembled according to the present invention.

[0027] In the diagram: 1-Upper extrusion plate; 2-Lower extrusion plate; 3-Screw; 4-Locking nut; 5-Upper radial cable; 6-Lower radial cable; 7-Hollow frame; 701-Horizontal plate; 702-Vertical plate; 703-Through hole; 8-Through-type jack; 9-Anchor nut; 10-Guide fillet. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] Example:

[0030] like Figure 1 and Figure 3 The multi-radial cable compression tensioning mechanism shown includes an upper compression plate 1 and a lower compression plate 2 arranged coaxially and symmetrically, and a plurality of screws 3 arranged in a ring array along the axis of the upper compression plate 1.

[0031] The axes of several screws 3 are parallel to the axis of the upper extrusion plate 1. The upper and lower parts of the screws 3 are threaded with locking nuts 4. The upper extrusion plate 1 and the lower extrusion plate 2 are slidably sleeved on the screws 3 between the two locking nuts 4.

[0032] In this embodiment, as one example of this application, the large prestressed cable net structure component includes an upper ring and a lower ring, and a plurality of support rods disposed between the upper ring and the lower ring. A plurality of upper radial cables 5 are arranged in a ring array on the upper ring, and a plurality of lower radial cables 6 are arranged in a ring array on the lower ring. The two ends of the upper radial cables 5 are fixed to the upper ring, and the two ends of the lower radial cables 6 are fixed to the lower ring. The plurality of upper radial cables 5 intersect at a first intersection point, and the plurality of lower radial cables 6 intersect at a second intersection point. The first and second intersection points are located on the extended axes of the upper extrusion plate 1 and the lower extrusion plate 2. The upper radial cables 5 and the lower radial cables 6 form a symmetrically arranged parabolic structure. The inner end face of the upper extrusion plate 1 abuts against the first intersection point, and the inner end face of the lower extrusion plate 2 abuts against the second intersection point. A tensioning gap is provided between the inner end faces of the upper extrusion plate 1 and the lower extrusion plate 2.

[0033] In this embodiment, both the upper radial cable 5 and the lower radial cable 6 are tensioned carbon fiber cables. The inner end faces of the upper extrusion plate 1 and the lower extrusion plate 2 are provided with guide rounded corners 10 to prevent the right angle from damaging the carbon fiber cables during the tensioning process.

[0034] like Figure 1 As shown, a pusher module is provided on the screw 3 on the outer side of the upper extrusion plate 1 and / or the lower extrusion plate 2 for driving the upper extrusion plate 1 and the lower extrusion plate 2 to move in opposite directions.

[0035] like Figure 1 , Figure 2 and Figure 4 As shown, the jacking module includes a hollow frame 7, a through-type jack 8, and an anchoring nut 9 arranged sequentially on the screw 3;

[0036] The hollow frame 7 and the through-hole jack 8 are slidably sleeved on the screw 3. The front end of the hollow frame 7 is pressed against the outer end face of the upper extrusion plate 1 or the lower extrusion plate 2, and the front end of the through-hole jack 8 is pressed against the rear end of the hollow frame 7. The anchoring nut 9 is threadedly connected to the screw 3 at the rear end of the through-hole jack 8.

[0037] like Figure 1 , Figure 2 and Figure 4 As shown, the hollow frame 7 is a U-shaped frame, and the hollow frame 7 includes a horizontal plate 701 and two vertical plates 702 connected to both ends of the horizontal plate;

[0038] The horizontal plate 701 has a through hole 703 for the screw 3 to pass through, and the front ends of the two vertical plates 702 are pressed against the outer end face of the upper extrusion plate 1 or the lower extrusion plate 2. The locking nut 4 is located between the two vertical plates 702.

[0039] In this embodiment, a push-pull module can be installed on the screw 3 on the outer end face of the upper extrusion plate 1, or on the screw 3 on the outer end face of the lower extrusion plate 2, or simultaneously on the screw 3 on the outer end faces of both the upper and lower extrusion plates 1 and 2. Initially, the inner end faces of the upper extrusion plate 1 and the lower extrusion plate 2 are respectively abutted against the upper radial cable 5 and the lower radial cable 6, and the locking nuts 4 at both ends are tightened. The hollow frame 7, the through-type jack 8, and the anchoring nut 9 are then installed onto the screw 3 (e.g., Figure 1 The diagram shows the installation of a push-up module on the screw 3 on the outer end face of the upper extrusion plate 1. The through-hole jack 8 is activated to push out the tension. Under the action of the through-hole jack 8, the tension gap between the upper extrusion plate 1 and the lower extrusion plate 2 is reduced. When the preset push-out force is reached, the through-hole jack 8 stops moving. The locking nut 4 under the hollow frame 7 is tightened again, and the hollow frame 7, the through-hole jack 8 and the anchor nut 9 are removed from the screw. The tensioning is completed.

[0040] In summary, this application improves the tensioning efficiency by simultaneously tensioning several upper radial cables 5 and lower radial cables 6 using symmetrically arranged upper extrusion plate 1 and lower extrusion plate 2, while also ensuring good stress consistency among the radial cables after tensioning.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A multi-radial cable compression tensioning mechanism, characterized in that, It includes an upper extrusion plate (1) and a lower extrusion plate (2) arranged coaxially and symmetrically, and several screws (3) arranged in a ring array along the axis of the upper extrusion plate (1). The axes of several screws (3) are parallel to the axis of the upper extrusion plate (1). The upper and lower parts of the screws (3) are threaded with locking nuts (4). The upper extrusion plate (1) and the lower extrusion plate (2) are slidably sleeved on the screws (3) between the two locking nuts (4).

2. The multi-radial cable compression tensioning mechanism according to claim 1, characterized in that, The radial cables to be tensioned include the upper radial cable (5) and the lower radial cable (6); The middle parts of the upper radial cable (5) and the lower radial cable (6) are located between the upper extrusion plate (1) and the lower extrusion plate (2). The middle part of the upper radial cable (5) is pressed against the inner end face of the upper extrusion plate (1), and the middle part of the lower radial cable (6) is pressed against the inner end face of the lower extrusion plate (2). A tensioning gap is provided between the inner end faces of the upper extrusion plate (1) and the lower extrusion plate (2).

3. The multi-radial cable compression tensioning mechanism according to claim 2, characterized in that, A pusher module is provided on the screw (3) on the outside of the upper extrusion plate (1) or / and the lower extrusion plate (2) for driving the upper extrusion plate (1) and the lower extrusion plate (2) to move in opposite directions.

4. The multi-radial cable compression tensioning mechanism according to claim 3, characterized in that, The jacking module includes a hollow frame (7), a through-type jack (8), and an anchoring nut (9) arranged sequentially on the screw (3). The hollow frame (7) and the through-hole jack (8) are slidably sleeved on the screw (3). The front end of the hollow frame (7) is pressed against the outer end face of the upper extrusion plate (1) or the lower extrusion plate (2). The front end of the through-hole jack (8) is pressed against the rear end of the hollow frame (7). The anchoring nut (9) is threadedly connected to the screw (3) at the rear end of the through-hole jack (8).

5. The multi-radial cable compression tensioning mechanism according to claim 4, characterized in that, The hollow frame (7) is a U-shaped frame, and the hollow frame (7) includes a horizontal plate (701) and two vertical plates (702) connected to both ends of the horizontal plate. The horizontal plate (701) has a through hole (703) for the screw (3) to pass through. The front ends of the two vertical plates (702) are pressed against the outer end face of the upper extrusion plate (1) or the lower extrusion plate (2). The locking nut (4) is located between the two vertical plates (702).

6. The multi-radial cable compression tensioning mechanism according to claim 1, characterized in that, Guide radii (10) are provided on the inner end faces of the upper extrusion plate (1) and the lower extrusion plate (2).

7. The multi-radial cable compression tensioning mechanism according to claim 4, characterized in that, When the radial cable tensioning is completed, adjust the locking nut (4) to abut against the outer end face of the upper extrusion plate (1) and the lower extrusion plate (2).

8. The multi-radial cable compression tensioning mechanism according to claim 2, characterized in that, The number of the upper radial cables (5) and lower radial cables (6) is greater than or equal to 2, and a plurality of the upper radial cables (5) and lower radial cables (6) are arranged along a ring array.

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