Cable truss

Abstract

A cable truss, including upper chord cable, lower chord cable, cable clamp, cable clamp support arm, cable end connecting block; the two ends of the cable clamp support arm are respectively provided with a cable clamp, the cable clamp is a cylindrical structure as a whole, which is composed of upper spiral body, middle spiral body and lower spiral body, the joint of the upper spiral body and the middle spiral body is provided with an upper chord cable through hole, and the joint of the middle spiral body and the lower spiral body is provided with a lower chord cable through hole; a plurality of telescopic locking pin shafts are arranged in the upper spiral body and the lower spiral body in the vertical direction, the middle spiral body is provided with locking pin shaft insertion holes corresponding to the locking pin shafts, and the locking pin shafts are inserted and matched with the locking pin shaft insertion holes. The application solves the design problem of the cable net node, reduces the adverse effect of the unbalanced force between the cable nets on the overall structure, increases the force rationality of the node and the safety of the whole cable net, reduces the processing and manufacturing cost and the construction difficulty, and can be applied to the "sky round place" structure of the "Dream of Red Mansions" drama fantasy garden engineering.

Description

Technical Field

[0001] This invention relates to the field of cable net construction technology for large building structures, and more specifically, to a cable truss. Background Technology

[0002] Prestressed cable structures are a common building form in large-span structures, frequently used in applications such as stadium roofs. They consist of a cable net composed of prestressed cables. After the cables are installed, they are tensioned to achieve the predetermined cable force, and then the roof slab is laid on the cable net. Cable net structures are one type of large-span prestressed steel structure system; it is a highly efficient full-tension system.

[0003] Cable net structures come in various shapes and unique designs, but many of these creative designs present numerous challenges to the design of the cable nodes. The cable nodes are the connecting hubs of the cable net, and their structural rationality and safety directly affect the overall performance of the cable net.

[0004] During the design of cable net structures, unbalanced forces inevitably arise between the various cable segments due to the structure's inherent construction. These unbalanced forces are further amplified during construction by various factors, including errors in the precision of cable processing, errors in the position of marking points on the cables, errors in the installation position of cable clamps, the combined action of multiple cables, and errors in the processing and installation of steel structure anchor points, thus adversely affecting the entire cable net system.

[0005] Currently, while existing technologies for resisting unbalanced forces between cables in cable nets can achieve a certain degree of resistance, the design of the cables and their connection points significantly increases the manufacturing cost of the cable net structure, raises construction difficulty, and consequently increases construction costs, while also affecting construction accuracy and aesthetics to some extent. Furthermore, for certain special structures, the cable connections themselves are insufficient to resist the unbalanced forces of the cable net structure, not only creating safety hazards for the entire cable structure but also greatly increasing the design complexity of the connections.

[0006] The present invention provides a cable truss to solve the above problems. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention provides a cable truss that effectively solves the design challenges of cable net nodes, reduces the adverse effects of unbalanced forces between cable nets on the overall structure, increases the stress rationality of nodes and the safety of the entire cable net, and reduces processing and manufacturing costs and construction difficulty. It can be successfully applied to the "Heaven and Earth" roof structure of the "Dream of the Red Chamber" theatrical fantasy city landscape project.

[0008] To achieve the above objectives, the present invention provides a cable truss, comprising an upper chord cable, a lower chord cable, cable clamps, a cable clamp support arm, and a cable end connecting block; each end of the cable clamp support arm is provided with a cable clamp, the cable clamp being a cylindrical structure composed of an upper helix, a middle helix, and a lower helix; an upper chord cable through-hole is provided at the junction of the upper and middle helices, and a lower chord cable through-hole is provided at the junction of the middle and lower helices; multiple retractable locking pins are provided vertically within the upper and lower helices, and a locking pin insertion hole corresponding to the locking pin is provided within the middle helix, the locking pins being inserted into the locking pin insertion hole.

[0009] Preferably, the cable clamp and the cable clamp support arm are connected as one unit by a hinge structure; the cable end connecting block is connected as one unit to the upper chord cable and the lower chord cable by a hinge structure.

[0010] In any of the above embodiments, it is preferred that the cylindrical structure has a central rotating column inside, and the upper and lower helical bodies rotate in opposite directions around the central rotating column to achieve the overall closure and opening of the cylindrical structure.

[0011] In any of the above embodiments, it is preferred that the middle spiral is located at the middle position in the vertical direction of the central rotating column and is fixedly integrated with the central rotating column.

[0012] In any of the above embodiments, it is preferred that the cable end connecting block includes a support plate, a plurality of upper chord cable hinge seats, a plurality of lower chord cable hinge seats, and an auxiliary cable hinge seat.

[0013] In any of the above embodiments, it is preferred that the support plate is radially disposed on the outer wall of the central ring of the cable net structure, and upper chord cable hinge seats and lower chord cable hinge seats are respectively disposed on the two sides of the support plate. Upper chord cable hinge seats and lower chord cable hinge seats are disposed on the end of the support plate away from the central ring, and an auxiliary cable hinge seat is disposed at the middle position of the end.

[0014] In any of the above embodiments, it is preferred that the axes of the upper chord cable through-hole and the lower chord cable through-hole form an angle of 60°-90°; the cable clamp support arm is configured with a screw and sleeve connection method to facilitate length adjustment.

[0015] In any of the above embodiments, it is preferred that a cable force monitoring unit is provided inside the cable clamp, and a cable force sensing unit is provided inside both the upper chord cable and the lower chord cable. The cable force monitoring unit can receive signals from the cable force sensing unit and monitor the force on the cable in real time.

[0016] In any of the above embodiments, it is preferred that the cable force monitoring unit is disposed in the upper chord cable perforation and the lower chord cable perforation of the middle helix, and includes an arc-shaped fiber optic grating monitor. The arc-shaped fiber optic grating monitor is in contact with the upper chord cable and the lower chord cable, and its arc shape is adapted to the surface shape of the cable.

[0017] In any of the above embodiments, it is preferred that the locking pin shaft is a multi-section coaxial telescopic sleeve structure. When the upper and lower spiral bodies rotate in opposite directions around the central rotating column to open the cylindrical structure as a whole, the multiple telescopic locking pin shafts provided therein retract into the upper and lower spiral bodies, thereby unlocking the cable clamp from the upper and lower chord cables. When the upper and lower spiral bodies rotate in opposite directions around the central rotating column to close the cylindrical structure as a whole, the multiple telescopic locking pin shafts extend out and are inserted into the corresponding locking pin shaft insertion holes, thereby locking the upper and lower chord cables with the cable clamp.

[0018] The beneficial effects of this invention are:

[0019] 1. This invention effectively solves the design problem of cable net nodes, reduces the adverse effects of unbalanced forces between cable nets on the overall structure, increases the stress rationality of nodes and the safety of the entire cable net, reduces processing and manufacturing costs and construction difficulty, and can be successfully applied to the "Heaven and Earth" roof structure of the "Dream of the Red Chamber" theatrical fantasy city landscape project.

[0020] 2. The steel cable clamp in this invention features a clever design with upper and lower spiral bodies that can rotate helically and are combined with a central spiral body. This design enables effective automatic locking and unlocking of the steel cable with excellent locking performance. Furthermore, it is extremely convenient to install, significantly reducing the complexity and tediousness of manually tightening bolts and other fasteners used in existing technologies. This significantly improves construction efficiency and ensures the load-bearing performance of the cable net nodes, thus significantly improving construction quality. Additionally, the steel cable perforation angle can be set to meet the needs of different cable net structures, expanding its application range.

[0021] 3. In this invention, the length of the cable clamp support arm can be adjusted according to construction requirements, ensuring the overall shape of the cable net structure and preventing cables of different layers from getting tangled together, thus meeting the application and construction needs of different cable net structures. The cable clamp is equipped with a cable force monitoring unit suitable for real-time monitoring of the cable force in the cable net structure, ensuring construction safety and effectiveness. The arc-shaped fiber optic grating monitor improves the contact effect with the cable while protecting the cable surface from mechanical damage, eliminating the error caused by local bending deformation of the cable and improving monitoring accuracy. Construction and installation are convenient, and maintenance and replacement can be easily carried out, reducing the maintenance cost throughout the entire life cycle. Brief description of the attached figures

[0022] Figure 1This is a schematic diagram of the overall structure of the cable truss according to the present invention;

[0023] Figure 2 This is a schematic diagram of the cable clamp and cable clamp support arm of the cable truss according to the present invention;

[0024] Figure 3 This is a schematic diagram of the cable end connection block of the cable truss according to the present invention. Detailed Implementation

[0025] The technical solution of this application will be described in detail below with reference to the specific embodiments and accompanying drawings. However, the following embodiments are only used to understand the present invention. The embodiments and features in the embodiments of this application can be combined with each other. This application can be implemented in a variety of different ways as defined and covered by the claims.

[0026] Example 1

[0027] See Figure 1-3 A cable truss includes an upper chord cable 1, a lower chord cable 2, cable clamps 3, cable clamp support arms 4, and cable end connecting blocks 5. Each end of the cable clamp support arm 4 is provided with a cable clamp 3. Each cable clamp 3 is a cylindrical structure composed of an upper helix 6, a middle helix 7, and a lower helix 8. An upper chord cable through-hole 9 is provided at the junction of the upper helix 6 and the middle helix 7, and a lower chord cable through-hole 10 is provided at the junction of the middle helix 7 and the lower helix 8. Multiple retractable locking pins 11 are provided vertically within the upper helix 6 and the lower helix 8. The middle helix 7 has locking pin insertion holes corresponding to the locking pins 11, and the locking pins 11 are inserted into the locking pin insertion holes.

[0028] The cable clamp 3 and the cable clamp support arm 4 are connected as one unit by a hinge structure; the cable end connecting block 5 is connected as one unit to the upper chord cable 1 and the lower chord cable 2 by a hinge structure.

[0029] The cylindrical structure has a central rotating column inside, and the upper helix 6 and the lower helix 8 rotate in opposite directions around the central rotating column to achieve the overall closing and opening of the cylindrical structure.

[0030] The intermediate helical body 7 is located at the middle position in the vertical direction of the central rotating column and is fixed together with the central rotating column.

[0031] The cable end connecting block 5 includes a support plate 12, multiple upper chord cable hinge seats 13, multiple lower chord cable hinge seats 14, and auxiliary cable hinge seats 15.

[0032] The support plate 12 is radially arranged on the outer wall of the central ring of the cable net structure. The two sides of the support plate 12 are respectively provided with an upper chord cable hinge seat 13 and a lower chord cable hinge seat 14. The upper chord cable hinge seat 13 and the lower chord cable hinge seat 14 are provided on the end of the support plate 12 away from the central ring, and an auxiliary cable hinge seat 15 is provided at the middle position of the end.

[0033] The axes of the upper chord cable through hole 9 and the lower chord cable through hole 10 form a 60° angle; the cable clamp support arm 4 is configured with a screw and sleeve connection method to facilitate length adjustment.

[0034] The cable clamp 3 is equipped with a cable force monitoring unit, and the upper chord cable 1 and the lower chord cable 2 are both equipped with cable force sensing units. The cable force monitoring unit can receive signals from the cable force sensing units and monitor the force on the cable in real time.

[0035] The cable force monitoring unit is installed in the upper chord cable perforation 9 and the lower chord cable perforation 10 of the middle helix. It includes an arc-shaped fiber optic grating monitor, which is in contact with the upper chord cable 1 and the lower chord cable 2, and its arc shape is adapted to the surface shape of the cable.

[0036] The locking pin shaft 11 is a multi-section coaxial telescopic sleeve structure. When the upper spiral body 6 and the lower spiral body 8 rotate in opposite directions around the central rotating column to open the entire cylindrical structure, the multiple telescopic locking pin shafts 11 retract into the upper spiral body 6 and the lower spiral body 8, thereby unlocking the cable clamp from the upper chord cable 1 and the lower chord cable 2. When the upper spiral body 6 and the lower spiral body 8 rotate in opposite directions around the central rotating column to close the entire cylindrical structure, the multiple telescopic locking pin shafts 11 extend out and are inserted into the corresponding locking pin shaft insertion holes, thereby locking the upper chord cable 1 and the lower chord cable 2 with the cable clamp 3.

[0037] Example 2

[0038] See Figure 1-3 A cable truss includes an upper chord cable 1, a lower chord cable 2, cable clamps 3, cable clamp support arms 4, and cable end connecting blocks 5. Each end of the cable clamp support arm 4 is provided with a cable clamp 3. Each cable clamp 3 is a cylindrical structure composed of an upper helix 6, a middle helix 7, and a lower helix 8. An upper chord cable through-hole 9 is provided at the junction of the upper helix 6 and the middle helix 7, and a lower chord cable through-hole 10 is provided at the junction of the middle helix 7 and the lower helix 8. Multiple retractable locking pins 11 are provided vertically within the upper helix 6 and the lower helix 8. The middle helix 7 has locking pin insertion holes corresponding to the locking pins 11, and the locking pins 11 are inserted into the locking pin insertion holes.

[0039] The cable clamp 3 and the cable clamp support arm 4 are connected as one unit by a hinge structure; the cable end connecting block 5 is connected as one unit to the upper chord cable 1 and the lower chord cable 2 by a hinge structure.

[0040] The cylindrical structure has a central rotating column inside. The upper helix 6 and the lower helix 8 rotate in opposite directions around the central rotating column in a spiral pattern to achieve the overall closing and opening of the cylindrical structure.

[0041] The intermediate helical body 7 is located at the middle position in the vertical direction of the central rotating column and is fixed together with the central rotating column.

[0042] The cable end connecting block 5 includes a support plate 12, multiple upper chord cable hinge seats 13, multiple lower chord cable hinge seats 14, and auxiliary cable hinge seats 15.

[0043] The support plate 12 is radially arranged on the outer wall of the central ring of the cable net structure. The two sides of the support plate 12 are respectively provided with an upper chord cable hinge seat 13 and a lower chord cable hinge seat 14. The upper chord cable hinge seat 13 and the lower chord cable hinge seat 14 are provided on the end of the support plate 12 away from the central ring, and an auxiliary cable hinge seat 15 is provided at the middle position of the end.

[0044] The axes of the upper chord cable through hole 9 and the lower chord cable through hole 10 form a 75° angle; the cable clamp support arm 4 is configured with a screw and sleeve connection method to facilitate length adjustment.

[0045] The cable clamp 3 is equipped with a cable force monitoring unit, and the upper chord cable 1 and the lower chord cable 2 are both equipped with cable force sensing units. The cable force monitoring unit can receive signals from the cable force sensing units and monitor the force on the cable in real time.

[0046] The cable force monitoring unit is installed in the upper chord cable perforation 9 and the lower chord cable perforation 10 of the middle helix. It includes an arc-shaped fiber optic grating monitor, which is in contact with the upper chord cable 1 and the lower chord cable 2, and its arc shape is adapted to the surface shape of the cable.

[0047] The locking pin shaft 11 is a multi-section coaxial telescopic sleeve structure. When the upper spiral body 6 and the lower spiral body 8 rotate in opposite directions around the central rotating column to open the entire cylindrical structure, the multiple telescopic locking pin shafts 11 retract into the upper spiral body 6 and the lower spiral body 8, thereby unlocking the cable clamp from the upper chord cable 1 and the lower chord cable 2. When the upper spiral body 6 and the lower spiral body 8 rotate in opposite directions around the central rotating column to close the entire cylindrical structure, the multiple telescopic locking pin shafts 11 extend out and are inserted into the corresponding locking pin shaft insertion holes, thereby locking the upper chord cable 1 and the lower chord cable 2 with the cable clamp 3.

[0048] Furthermore, to further improve the technical effect of the present invention, in this embodiment, the upper chord steel cable 1 and the lower chord steel cable 2, from the inside out, respectively include a first optical fiber, a galvanized steel strand, four second optical fibers, a steel cable sheath, and a steel cable end anchor. The first optical fiber is located at the center of the steel strand, and the four second optical fibers are evenly spaced on the circumference of the steel strand. Multiple sets of grating sensing devices are arranged along the length of the first and second optical fibers. The first optical fiber, the second optical fiber, and the grating sensing devices constitute the cable force sensing unit. This arrangement ensures comprehensive cable force monitoring without blind spots, guaranteeing thorough monitoring effectiveness.

[0049] In this invention, the cable tension sensing unit is embedded within the steel cable body, and a steel cable sheath protects the unit from damage. This method seamlessly integrates the cable tension sensing unit and the steel cable, enabling effective sensing and coordination with the cable tension monitoring unit located within the cable clamp, thus achieving precise measurement of the cable tension. Furthermore, it is simple to construct, easy to manufacture, provides real-time monitoring, accurate measurement, has a compact structure, and is easy to maintain.

[0050] Auxiliary cable fixing structures are respectively provided in the upper chord cable through-hole 9 of the upper helical body 6 and the lower chord cable through-hole 10 of the lower helical body 8. Each auxiliary cable fixing structure includes a compression strut, on which a freely movable cable clamping plate is fitted. A compression spring is fitted around the outer circumference of the compression strut, with one end fixed and the other end connected to the cable clamping plate. The cable clamping plate is semi-circular in shape to adapt to the outer circumference of the cable. With this auxiliary cable fixing structure, when cables are threaded through the upper chord cable through-hole 9 and the lower chord cable through-hole 10, the pressure of the compression spring ensures that the cable clamping plate completely compresses the cable, guaranteeing the fixing effect for cables of different radii in the upper chord cable through-hole 9 and the lower chord cable through-hole 10. Simultaneously, it provides a certain degree of elasticity between the cable clamp 3 and the threaded cable, avoiding damage caused by the cable clamp's completely rigid fixation of the cable. Furthermore, the steel cable auxiliary fixing structure can be adjusted at any time according to the actual situation, which greatly improves the stability of the load at the cable net nodes.

[0051] Example 3

[0052] See Figure 1-3A cable truss includes an upper chord cable 1, a lower chord cable 2, cable clamps 3, cable clamp support arms 4, and cable end connecting blocks 5. Each end of the cable clamp support arm 4 is provided with a cable clamp 3. Each cable clamp 3 is a cylindrical structure composed of an upper helix 6, a middle helix 7, and a lower helix 8. An upper chord cable through-hole 9 is provided at the junction of the upper helix 6 and the middle helix 7, and a lower chord cable through-hole 10 is provided at the junction of the middle helix 7 and the lower helix 8. Multiple retractable locking pins 11 are provided vertically within the upper helix 6 and the lower helix 8. The middle helix 7 has locking pin insertion holes corresponding to the locking pins 11, and the locking pins 11 are inserted into the locking pin insertion holes.

[0053] The cable clamp 3 and the cable clamp support arm 4 are connected as one unit by a hinge structure; the cable end connecting block 5 is connected as one unit to the upper chord cable 1 and the lower chord cable 2 by a hinge structure.

[0054] The cylindrical structure has a central rotating column inside, and the upper helix 6 and the lower helix 8 rotate in opposite directions around the central rotating column to achieve the overall closing and opening of the cylindrical structure.

[0055] The intermediate helical body 7 is located at the middle position in the vertical direction of the central rotating column and is fixed together with the central rotating column.

[0056] The cable end connecting block 5 includes a support plate 12, multiple upper chord cable hinge seats 13, multiple lower chord cable hinge seats 14, and auxiliary cable hinge seats 15.

[0057] The support plate 12 is radially disposed on the outer wall of the central ring of the cable net structure. Upper chord cable hinge seats 13 and lower chord cable hinge seats 14 are respectively disposed on both sides of the support plate 12. The upper chord cable hinge seats 13 and lower chord cable hinge seats 14 are disposed on the end of the support plate 12 furthest from the central ring, and an auxiliary cable hinge seat 15 is disposed at the middle position of the end. During cable net construction, the auxiliary cable hinge seat 15 is connected to the end of the auxiliary cable used in erecting the cable net, effectively ensuring construction safety and quality.

[0058] The axes of the upper chord steel cable through hole 9 and the lower chord steel cable through hole 10 form a 90° angle; the steel cable clamp support arm 4 is configured with a screw and sleeve connection method, which facilitates length adjustment.

[0059] The cable clamp 3 is equipped with a cable force monitoring unit, and the upper chord cable 1 and the lower chord cable 2 are both equipped with cable force sensing units. The cable force monitoring unit can receive signals from the cable force sensing units and monitor the force on the cable in real time.

[0060] The cable force monitoring unit is installed in the upper chord cable perforation 9 and the lower chord cable perforation 10 of the middle helix. It includes an arc-shaped fiber optic grating monitor, which is in contact with the upper chord cable 1 and the lower chord cable 2, and its arc shape is adapted to the surface shape of the cable.

[0061] The locking pin shaft 11 is a multi-section coaxial telescopic sleeve structure. When the upper spiral body 6 and the lower spiral body 8 rotate in opposite directions around the central rotating column to open the entire cylindrical structure, the multiple telescopic locking pin shafts 11 retract into the upper spiral body 6 and the lower spiral body 8, thereby unlocking the cable clamp from the upper chord cable 1 and the lower chord cable 2. When the upper spiral body 6 and the lower spiral body 8 rotate in opposite directions around the central rotating column to close the entire cylindrical structure, the multiple telescopic locking pin shafts 11 extend out and are inserted into the corresponding locking pin shaft insertion holes, thereby locking the upper chord cable 1 and the lower chord cable 2 with the cable clamp 3.

[0062] Furthermore, to further improve the technical effect of the present invention, in this embodiment, the synchronous extension and retraction of the locking pin 11 with the rotation of the upper spiral 6 or the lower spiral 8 is achieved through the following structure: an internal gear is provided at the bottom end of the locking pin 11, an external gear is provided inside the upper spiral 6 or the lower spiral 8, a guide rod is passed through the internal gear, and a telescopic block with a transmission structure is provided on the guide rod. One end of the telescopic block is connected to the internal gear, and the other end is connected to the second telescopic sleeve. The fixed end of the first telescopic sleeve is provided on the end face of the internal gear, and the first telescopic sleeve is provided with a guide rod, a transmission structure, and a telescopic block. The second telescopic sleeve is fitted inside the first telescopic sleeve. When the upper spiral 6 or the lower spiral 8 rotates spirally, the external gear drives the internal gear to rotate, causing the first telescopic sleeve to gradually extend, and at the same time, the transmission structure drives the telescopic block to slide outward on the guide rod, thereby causing the second telescopic sleeve to also extend outward. Until the locking pin is fully extended and inserted into the corresponding locking pin insertion hole, the cable clamp 3 locks the upper chord cable 1 and the lower chord cable 2.

[0063] The transmission structure can adopt a commonly used structure in the field, as long as it can achieve the function of stroke transmission and thus achieve the above-mentioned technical effect. Similarly, if a coaxial telescopic sleeve structure with three or more sections is adopted, the second and subsequent telescopic sleeves can adopt the same structure as the first telescopic sleeve to achieve the above-mentioned technical effect.

[0064] The above-mentioned structure ensures that the locking pin shaft 11 is compactly arranged and highly integrated. While ensuring the locking effect, it significantly reduces the overall volume and weight of the steel cable clamp. The structure is simple, stable and reliable, easy to control, highly automated, and can achieve precise position control, resulting in a good locking effect on the steel cable.

[0065] As can be seen from the above embodiments, the present invention effectively solves the design problem of cable net nodes, reduces the adverse effects of unbalanced forces between cable nets on the overall structure, increases the stress rationality of nodes and the safety of the entire cable net, reduces processing and manufacturing costs and construction difficulty, and can be successfully applied to the "Heaven and Earth" roof structure of the "Dream of the Red Chamber" theatrical fantasy city landscape garden project.

[0066] The steel cable clamp of this invention features a clever design with upper and lower spiral bodies that can rotate helically and are combined with a central spiral body. This design enables effective automatic locking and unlocking of the steel cable with excellent locking performance. Furthermore, it is extremely convenient to install, significantly reducing the complexity and tediousness of manually tightening bolts and other fasteners used in existing technologies. This significantly improves construction efficiency and ensures the stress performance of the cable net nodes, thus greatly enhancing construction quality. Additionally, the steel cable perforation angle can be set to meet the needs of different cable net structures, expanding its application range.

[0067] In this invention, the length of the cable clamp support arm can be adjusted according to construction requirements to meet the application and construction needs of different cable net structures. The cable clamp is equipped with a cable force monitoring unit for real-time monitoring of the cable force in the cable net structure, ensuring construction safety and effectiveness. The arc-shaped fiber optic grating monitor improves the contact effect with the cable while protecting the cable surface from mechanical damage, eliminating the error caused by local bending deformation of the cable and improving monitoring accuracy. The invention is easy to install and can be easily repaired and replaced, reducing the maintenance cost throughout its life cycle.

[0068] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A cable truss, characterized in that, It includes an upper chord steel cable (1), a lower chord steel cable (2), a steel cable clamp (3), a steel cable clamp support arm (4), and a steel cable end connecting block (5); a steel cable clamp (3) is provided at each end of the steel cable clamp support arm (4). The steel cable clamp (3) is a cylindrical structure composed of an upper spiral body (6), a middle spiral body (7), and a lower spiral body (8). An upper chord steel cable through hole (9) is provided at the junction of the upper spiral body (6) and the middle spiral body (7), and a lower chord steel cable through hole (10) is provided at the junction of the middle spiral body (7) and the lower spiral body (8); multiple retractable locking pin shafts (11) are provided in the upper spiral body (6) and the lower spiral body (8) along the vertical direction. A locking pin shaft insertion hole corresponding to the locking pin shaft (11) is provided in the middle spiral body (7), and the locking pin shaft (11) is inserted into the locking pin shaft insertion hole. The cable clamp (3) and the cable clamp support arm (4) are connected as one unit by a hinge structure; the cable end connecting block (5) is connected as one unit to the upper chord cable (1) and the lower chord cable (2) by a hinge structure. The cylindrical structure has a central rotating column inside, and the upper helix (6) and lower helix (8) rotate in opposite directions around the central rotating column to achieve the overall closure and opening of the cylindrical structure.

2. The cable truss according to claim 1, characterized in that, The middle spiral (7) is located in the middle position of the central rotating column in the vertical direction and is fixed together with the central rotating column.

3. The cable truss according to claim 2, characterized in that, The cable end connecting block (5) includes a support plate (12), multiple upper chord cable hinge seats (13), multiple lower chord cable hinge seats (14), and auxiliary cable hinge seats (15).

4. The cable truss according to claim 3, characterized in that, The support plate (12) is radially arranged on the outer wall of the central ring of the cable net structure. The two sides of the support plate (12) are respectively provided with an upper chord cable hinge seat (13) and a lower chord cable hinge seat (14). The upper chord cable hinge seat (13) and the lower chord cable hinge seat (14) are provided on the end of the support plate (12) away from the central ring, and an auxiliary cable hinge seat (15) is provided at the middle position of the end.

5. The cable truss according to claim 4, characterized in that, The axes of the upper chord cable through hole (9) and the lower chord cable through hole (10) form an angle of 60°-90°; the cable clamp support arm (4) is configured with a screw and sleeve connection method to facilitate length adjustment.

6. The cable truss according to claim 5, characterized in that, The cable clamp (3) is equipped with a cable force monitoring unit, and the upper chord cable (1) and lower chord cable (2) are both equipped with cable force sensing units. The cable force monitoring unit can receive the signal from the cable force sensing unit and monitor the force of the cable in real time.

7. The cable truss according to claim 6, characterized in that, The cable force monitoring unit is set in the upper chord cable through hole (9) and lower chord cable through hole (10) of the middle helix. It includes an arc-shaped fiber optic grating monitor. The arc-shaped fiber optic grating monitor is in contact with the upper chord cable (1) and the lower chord cable (2), and its arc shape is adapted to the surface shape of the cable.

8. The cable truss according to claim 7, characterized in that, The locking pin shaft (11) is a multi-section coaxial telescopic sleeve structure. When the upper spiral body (6) and the lower spiral body (8) rotate in opposite directions around the central rotating column to open the cylindrical structure as a whole, the multiple telescopic locking pin shafts (11) provided therein retract into the upper spiral body (6) and the lower spiral body (8) respectively, thereby unlocking the steel cable clamp from the upper chord steel cable (1) and the lower chord steel cable (2). When the upper spiral body (6) and the lower spiral body (8) rotate in opposite directions around the central rotating column to close the cylindrical structure as a whole, the multiple telescopic locking pin shafts (11) extend out and are inserted into the corresponding locking pin shaft insertion holes, thereby locking the upper chord steel cable (1) and the lower chord steel cable (2) with the steel cable clamp (3).

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