Torsion-resistant composite cable special for heliostat of photo-thermal power generation

Abstract

The application relates to the technical field of cables, and provides a special torsion-resistant composite cable for a heliostat of a photo-thermal power generation device, which comprises a core and a sheath, and the sheath is wrapped on the outside of the core; the sheath comprises a wrapping layer, an armored layer and a wear-resistant layer, and the wrapping layer, the armored layer and the wear-resistant layer are sequentially arranged from inside to outside. The special torsion-resistant composite cable for the heliostat of the photo-thermal power generation device can improve the torsion resistance of the cable.

Description

Technical Field

[0001] This application relates to the technical field of cables, and in particular to a torsion-resistant composite cable specifically designed for solar thermal power generation heliostats. Background Technology

[0002] Cables are basic electrical and signal transmission devices that integrate conductors, insulation layers, and protective structures. They enable stable transmission of power, control signals, and communication signals and are widely used in various power equipment, automated control systems, and new energy power generation scenarios. They are fundamental supporting components for the safe and stable operation of various electromechanical equipment and intelligent control systems.

[0003] Current cable structures are conventionally designed and generally have poor torsional resistance. In the field of heliostats, heliostats need to frequently rotate and oscillate during operation, causing the associated cables to continuously withstand alternating torsional and bending loads. Under long-term cyclical conditions, existing cables are prone to sheath cracking, core twisting and deformation, conductor breakage, signal transmission interruption, and other faults, significantly increasing the operation and maintenance costs of solar thermal power plants and seriously affecting the overall operational stability and power generation efficiency of the heliostat field. Therefore, further improvements are needed. Summary of the Invention

[0004] To improve the torsional resistance of cables, this application provides a torsional resistant composite cable specifically for solar thermal power generation heliostats.

[0005] The torsion-resistant composite cable for solar thermal power generation heliostats provided in this application adopts the following technical solution: A torsion-resistant composite cable for solar thermal power generation heliostats includes a conductor and a sheath, with the sheath covering the outside of the conductor. The sheath includes a wrapping layer, an armor layer, and an abrasion-resistant layer, arranged sequentially from the inside to the outside.

[0006] By adopting the above technical solution, an armor layer is set between the wrapping layer and the wear-resistant layer, improving the cable's torsional resistance. An wear-resistant layer is set on the outside of the armor layer, giving the overall structure good wear resistance and increasing its service life.

[0007] Optionally, an inner lining layer is provided between the wrapping layer and the armor layer, and an outer protective layer is provided between the armor layer and the wear-resistant layer.

[0008] Optionally, the armor layer is covered with multiple layers from the inside out.

[0009] By adopting the above technical solution and setting multiple armor layers, the torsional resistance of the overall structure is further improved.

[0010] Optionally, a constraint frame is provided on the outer side of the sheath, and the constraint frame has multiple constraint slots for the sheath to be inserted into; a constraint block is provided protruding at the opening of the constraint slot.

[0011] By adopting the above technical solution, multiple constraint slots on the constraint frame allow multiple cable sheaths to be embedded, enabling the constraint frame to position multiple cables and improve the overall neatness of cable laying. Simultaneously, the constraint frame maintains a certain distance between multiple cables, preventing them from sticking together and ensuring good heat dissipation. During installation, the cable sheath is squeezed into the constraint slot, causing it to deform. After being squeezed into the constraint slot, the sheath returns to its original shape, and the constraint blocks confine the sheath within the constraint slot, improving the ease of assembly and disassembly of the constraint frame.

[0012] Optionally, multiple constraint frames are provided along the length of the sheath, and the constraint slots of two adjacent constraint frames are staggered; the constraint frames are connected with locking bolts, and the locking bolts are connected in series with all the constraint frames.

[0013] By adopting the above technical solution, all constraint frames are connected in series with locking bolts, so that multiple cables on all constraint frames are connected as a whole, thereby improving the neatness of cable laying.

[0014] Optionally, the surface of the constraint frame is provided with two positioning strips, and a positioning area is formed between the two positioning strips for adjacent constraint frames to be embedded. The side walls of the two positioning strips that are close to each other are provided with constraint springs.

[0015] By adopting the above technical solution, when installing two adjacent constraint frames, the constraint frame is embedded into the positioning area of ​​the other constraint frame. During this process, the constraint frame pushes open the constraint spring. After the constraint frame is embedded into the positioning area of ​​the other constraint frame, the constraint spring returns to its original shape, thereby initially fixing the two constraint frames to facilitate the installation of locking bolts and improve the operational convenience of the overall structure. The positioning frame maintains the orientation of the two constraint frames, ensuring that multiple cables are spaced apart and maintaining good heat dissipation for the overall structure.

[0016] Optionally, a limit strip is hinged to the constraint frame, with a limit end and a push end formed at both ends of the limit strip. When the push end is driven to swing, the limit end of the limit strip abuts against or disengages from the outer surface of the sheath.

[0017] By adopting the above technical solution, after the cable is embedded in the constraint groove, the pushing end of the limiting strip is pushed, forcing the limiting end of the limiting strip to abut against the outer surface of the sheath, thereby limiting the cable and further improving the connection stability between the sheath and the constraint frame.

[0018] Optionally, a pusher is slidably mounted on the constraint frame, and the side wall of the pusher has a guide surface; when the locking bolt passes through the constraint frame, the pusher abuts against the locking bolt, and the pusher pushes the push end of the limit strip through the guide surface, and forces the limit end of the limit strip to abut against the outer surface of the sheath.

[0019] By adopting the above technical solution, when the locking bolts are sequentially inserted through multiple constraint frames, the locking bolts push the pusher frame, causing the pusher frame to slide. The pusher frame, through the guide surface, pushes the pusher end of the limiting strip, thereby forcing the limiting end of the limiting strip to press against the outer surface of the sheath, reducing the possibility of the sheath detaching from the constraint groove and improving the operational convenience of the overall structure. In addition, the locking bolts abut against the pusher frame, and the force of the pusher frame can react on the locking bolts, reducing the possibility of the locking bolts loosening, thereby improving the connection stability of the overall structure.

[0020] Optionally, a constraint seat is installed on the constraint frame, and a constraint groove is provided on the constraint seat; a docking component is provided between the constraint frame and the constraint seat, and the constraint frame and the constraint seat are detachably connected through the docking component.

[0021] By adopting the above technical solution, the constraint seat can be detachably installed on the constraint frame through the docking assembly. In practical applications, the constraint seat with an inner diameter that matches the outer diameter of the constraint groove can be selected according to the outer diameter of the sheath, thereby improving the adaptability of the overall structure.

[0022] Optionally, the constraint frame has a rod, and the constraint seat has a slot for inserting the rod; the inner wall of the slot and the side wall of the rod are both provided with a mating half-groove, and when the rod is fully inserted into the slot, the two mating half-grooves are connected to each other; the mating assembly includes a mating half-block and a mating spring, two mating half-blocks are provided and are rotatably installed in two mating half-grooves respectively; the mating spring is provided in the mating half-groove, and the normal state of the mating spring forces the mating half-block to partially rotate out of the corresponding mating half-groove.

[0023] By adopting the above technical solution, during installation between the constraint seat and the constraint frame, the slot of the constraint seat is aligned with the insertion rod of the constraint frame and pushed in, so that the insertion rod is fully inserted into the slot. In this state, the mating half-grooves of the inner wall of the slot and the side wall of the insertion rod are aligned with each other. Under the action of the mating spring, the mating half-pieces partially rotate out of their respective mating half-grooves, thereby embedding into the other mating half-grooves, achieving locking between the constraint seat and the constraint frame. During disassembly, simply move one of the mating half-pieces to rotate it into its respective mating half-grooves to "unlock" and remove the constraint seat, greatly improving the operational convenience of the overall structure. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of Example 1; Figure 2 This is a schematic diagram illustrating the structure of the constraint frame in Example 2; Figure 3 This is a schematic diagram of the constraint frame structure shown in Example 3; Figure 4 This is a schematic diagram illustrating the structure of the constraint groove in Example 3; Figure 5 This is an exploded view of the positioning area in Example 3; Figure 6 yes Figure 5 Enlarged view of point A in the middle; Figure 7 This is a partial cross-sectional view of Embodiment 4 illustrating the limiting strip; Figure 8 This is a partial cross-sectional view of the docking components in Embodiment 5; Figure 9 yes Figure 8 Enlarged view of point B in the middle.

[0025] Explanation of reference numerals in the attached diagram: 1. Core wire; 11. Filler layer; 2. Sheath; 21. Wrapping layer; 22. Inner lining layer; 23. Armor layer; 24. Outer sheath; 25. Wear-resistant layer; 3. Constraint frame; 31. Positioning strip; 311. Groove; 32. Positioning area; 33. Constraint spring; 34. Insert rod; 35. Connecting hole; 36. Positioning surface; 37. Moving groove; 38. Limiting post; 4. Constraint groove; 41. Constraint block; 5. Locking bolt; 51. Locking nut; 6. Limiting strip; 61. Limiting end; 62. Pushing end; 63. Rotating shaft; 7. Pushing frame; 71. Guide surface; 72. Return spring; 8. Constraint seat; 81. Slot; 82. Docking half slot; 9. Docking assembly; 91. Docking half block; 92. Docking spring; 93. Unlocking rod. Detailed Implementation

[0026] The following combination Figures 1-9 This application will be described in further detail. Example 1

[0027] This application discloses a torsion-resistant composite cable specifically for solar thermal power generation heliostats.

[0028] Reference Figure 1 A torsion-resistant composite cable for solar thermal power generation heliostats includes a conductor 1 and a sheath 2. The conductor 1 has multiple conductors, and a filler layer 11 is installed on the outside of the multiple conductors 1. The sheath 2 covers the filler layer 11 and all conductors 1.

[0029] In this embodiment, the sheath 2 includes a wrapping layer 21, an inner lining layer 22, an armor layer 23, an outer protective layer 24, and a wear-resistant layer 25. These layers are arranged sequentially from the inside out. Specifically, two sets of armor layers 23 are provided between the inner lining layer 22 and the outer protective layer 24. The wrapping layer 21 can be made of polyester non-woven fabric or PET polyester tape. The inner lining layer 22 serves to prevent the armor layer 23 from scratching the wrapping layer 21, blocks moisture, and provides a flat base for the armor layer 23. Both the inner lining layer 22 and the outer protective layer 24 can be made of PVC (polyvinyl chloride) or PE (polyethylene). The armor layer 23 can be steel wire braided armor or stranded steel wire armor. The wear-resistant layer 25 can be made of nylon braiding.

[0030] The implementation principle of Embodiment 1 of this application is as follows: an armor layer 23 is provided between the wrapping layer 21 and the wear-resistant layer 25 to improve the torsional resistance of the cable. By providing multiple armor layers 23, the torsional resistance of the overall structure is further improved. The wear-resistant layer 25 is provided on the outside of the armor layer 23, so that the overall structure has good wear resistance and improves the service life of the overall structure. Example 2

[0031] This application discloses a torsion-resistant composite cable specifically for solar thermal power generation heliostats.

[0032] The difference between the torsion-resistant composite cable for solar thermal heliostats disclosed in this application and Embodiment 1 is as follows: Reference Figure 2 In this embodiment, a constraint frame 3 is installed on the outer side of the sheath 2. Each of the two opposite sidewalls of the constraint frame 3 has a constraint groove 4. The constraint groove 4 is used for embedding the sheath 2 to constrain the position of two parallel cables, improving the neatness of the cable laying. Two constraint blocks 41 are installed at the opening of each constraint groove 4. The two constraint blocks 41 are fixedly installed on the two opposite inner walls of the opening of the constraint groove 4, and the distance between the two constraint blocks 41 is less than the outer diameter of the sheath 2.

[0033] The implementation principle of Embodiment 2 of this application is as follows: Multiple constraint slots 4 on the constraint frame 3 allow multiple cable sheaths 2 to be embedded, enabling the constraint frame 3 to position multiple cables and improve the overall neatness of cable laying. Simultaneously, the constraint frame 3 maintains a certain distance between multiple cables, preventing them from sticking together and maintaining good heat dissipation. During installation, the cable sheath 2 is squeezed into the slot of the constraint slot 4, causing the sheath 2 to deform. After the sheath 2 is squeezed into the constraint slot 4, it returns to its original shape, and the constraint block 41 can confine the sheath 2 within the constraint slot 4, improving the ease of assembly and disassembly of the constraint frame 3. Example 3

[0034] This application discloses a torsion-resistant composite cable specifically for solar thermal power generation heliostats.

[0035] The difference between the torsion-resistant composite cable for solar thermal heliostats disclosed in this application and that in Example 2 is as follows: Reference Figure 3 , Figure 4 , Figure 5In this embodiment, multiple constraint frames 3 are arranged along the length of the sheath 2, and adjacent constraint frames 3 are arranged perpendicularly so that the constraint grooves 4 of adjacent constraint frames 3 are staggered. A connecting hole 35 is opened at the center of the surface of the constraint frame 3, and a locking bolt 5 is connected to the constraint frame 3. The locking bolt 5 passes through the connecting hole 35 of two adjacent constraint frames 3 in sequence and is connected to a locking nut 51. The locking nut 51 is sleeved on the locking bolt 5 and threadedly connected to the locking bolt 5.

[0036] Two positioning strips 31 are fixedly installed on the surface of the constraint frame 3. The positioning strips 31 are arc-shaped and the distance between the two positioning strips 31 gradually increases from the center to both ends. A positioning area 32 is formed between the two positioning strips 31 for adjacent constraint frames 3 to be embedded. Both opposite side walls of the constraint frame 3 have positioning surfaces 36 for the positioning strips 31 to abut.

[0037] Reference Figure 5 , Figure 6 Both positioning bars 31 have grooves 311 on their adjacent sidewalls. A constraint spring 33 is installed in the groove 311. The constraint spring 33 is elastically set, with one end fixedly installed on the inner wall of the groove 311 and the other end of the constraint spring 33 protruding from the groove 311 near the constraint frame 3. When the adjacent constraint frame 3 is embedded in the positioning area 32, the constraint spring 33 abuts against the surface of the adjacent constraint frame 3.

[0038] The implementation principle of Embodiment 3 of this application is as follows: All constraint frames 3 are connected in series by locking bolts 5, making the multiple cables on all constraint frames 3 a whole, thus improving the neatness of cable laying. When installing two adjacent constraint frames 3, the constraint frame 3 is embedded into the positioning area 32 of the other constraint frame 3. During this process, the constraint frame 3 pushes open the constraint spring 33. After the constraint frame 3 is embedded into the positioning area 32 of the other constraint frame 3, the constraint spring 33 returns to its original shape, thereby initially fixing the two constraint frames 3 to facilitate the installation of the locking bolts 5 and improve the operational convenience of the overall structure. The positioning frame maintains the orientation of the two constraint frames 3, ensuring that the multiple cables are arranged at intervals, thus maintaining good heat dissipation of the overall structure. Example 4

[0039] This application discloses a torsion-resistant composite cable specifically for solar thermal power generation heliostats.

[0040] The difference between the torsion-resistant composite cable for solar thermal heliostats disclosed in this application and Example 3 is as follows: Reference Figure 7In this embodiment, a limiting strip 6 is installed on the surface of the constraint frame 3, and a rotating shaft 63 is fixedly installed on the limiting strip 6. The rotating shaft 63 is rotatably installed on the constraint frame 3, and the limiting strip 6 is hinged to the surface of the constraint frame 3 through the rotating shaft 63. Specifically, four limiting strips 6 are provided, two of which are used to abut against the outer surface of the sleeve 2 of one of the constraint grooves 4 of the constraint frame 3, and the other two limiting strips 6 are used to abut against the outer surface of the sleeve 2 of the other constraint groove 4 of the constraint frame 3.

[0041] The two ends of the limiting strip 6 form a limiting end 61 and a pushing end 62 respectively. The limiting end 61 is located on the side of the pushing end 62 away from the connecting hole 35. When the pushing ends 62 of the two limiting strips 6 corresponding to the constraint groove 4 move away from each other, the limiting ends 61 of the two limiting strips 6 corresponding to the constraint groove 4 approach each other and abut against the outer surface of the sheath 2 in the corresponding constraint groove 4 to restrict the sheath 2 from leaving the corresponding constraint groove 4.

[0042] The surface of the constraint frame 3 has a moving groove 37, and both ends of the moving groove 37 extend along the connecting line of the two constraint grooves 4. A push frame 7 is installed on the constraint frame 3, and a moving block (not shown in the figure) is fixedly installed on the side wall of the push frame 7. The moving block is slidably installed in the moving groove 37, and the push frame 7 is slidably installed on the constraint frame 3 through the moving block. There are two push frames 7, and the two push frames 7 are corresponding to the two constraint grooves 4. Each push frame 7 has two guide surfaces 71, and the two guide surfaces 71 of the push frame 7 are corresponding to the two limit strips 6 of the constraint groove 4.

[0043] A return spring 72 is installed between the two pushers 7. Under normal conditions, the return spring 72 forces the two pushers 7 to move closer to each other. When the locking bolt 5 passes through the connecting hole 35 of the constraint frame 3, the pusher 7 abuts against the locking bolt 5, and the pusher 7 pushes the push end 62 of the limit bar 6 through the guide surface 71, and forces the limit end 61 of the limit bar 6 to abut against the outer surface of the sheath 2.

[0044] Multiple limiting posts 38 are fixedly installed on the surface of the constraint frame 3. The limiting posts 38 are used to limit the flipping angle of the limiting strip 6 so as to ensure that when the push frame 7 slides toward the side closer to the corresponding constraint groove 4, it can push the pushing ends 62 of the two limiting strips 6 away from each other.

[0045] The implementation principle of Embodiment 4 of this application is as follows: After the sheath 2 is embedded in the constraint groove 4, the two push frames 7 are pried open and the locking bolt 5 is passed through the connecting hole 35 of the constraint frame 3. In this state, the push frame 7 pushes the push end 62 of the limiting strip 6 through the guide surface 71, forcing the limiting strip 6 to rotate around the rotation axis 63, so that the limiting end 61 of the limiting strip 6 abuts against the outer surface of the sheath 2 inside the constraint groove 4, thereby limiting the cable and reducing the possibility of the sheath 2 detaching from the constraint groove 4, further improving the connection stability between the sheath 2 and the constraint frame 3. In addition, the locking bolt 5 abuts against the push frame 7, and the push frame 7 is subjected to the elastic force from the return spring 72, which can react on the locking bolt 5, reducing the possibility of the locking bolt 5 loosening, thereby improving the connection stability of the overall structure. Example 5

[0046] This application discloses a torsion-resistant composite cable specifically for solar thermal power generation heliostats.

[0047] The difference between the torsion-resistant composite cable for solar thermal heliostats disclosed in this application and Example 3 is as follows: Reference Figure 8 , Figure 9 In this embodiment, constraint seats 8 are installed at both ends of the constraint frame 3, and constraint grooves 4 are disposed on the constraint seats 8. A docking component 9 is provided between the constraint frame 3 and the constraint seats 8, and the constraint frame 3 and the constraint seats 8 are detachably connected through the docking component 9.

[0048] A rod 34 is fixedly installed on the side wall of the constraint frame 3, and a slot 81 for inserting the rod 34 is opened on the side wall of the constraint seat 8. The shape of the slot 81 is adapted to the shape of the rod 34. The inner wall of the slot 81 and the side wall of the rod 34 are both provided with mating half-grooves 82. When the rod 34 is fully inserted into the slot 81, the two mating half-grooves 82 are interconnected, and in the interconnected state, the two mating half-grooves 82 combine to form a circular shape.

[0049] The docking assembly 9 includes two docking halves 91 and two docking springs 92. Two docking halves 91 are provided and rotatably installed within two docking slots 82, respectively. The shape of the docking halves 91 matches the shape of the docking slots 82. The number of docking springs 92 corresponds to the number of docking halves 91. One end of each docking spring 92 is fixedly connected to the corresponding docking half 91, and the other end is fixedly connected to the inner wall of the docking slot 82. Under normal conditions, the docking springs 92 force the docking half 91 to partially rotate out of the corresponding docking slot 82.

[0050] An unlocking rod 93 is fixedly installed on the side wall of the mating half block 91 inside the insertion rod 34. The side wall of the insertion rod 34 has an arc-shaped groove (not shown in the figure). The arc-shaped groove connects to the mating half groove 82 inside the insertion rod 34, and the virtual central axis of the arc-shaped groove coincides with the rotation central axis of the mating half block 91. The unlocking rod 93 passes through the arc-shaped groove and exits the outside of the insertion rod 34.

[0051] The implementation principle of Embodiment 5 of this application is as follows: the constraint groove 4 is set on the constraint seat 8, and the constraint seat 8 is detachably installed on the constraint frame 3 through the docking component 9. In practical applications, the constraint seat 8 with an inner diameter that matches the constraint groove 4 can be selected according to the actual outer diameter of the sheath 2 to improve the adaptability of the overall structure.

[0052] When installing the constraint seat 8 and the constraint frame 3, align the slot 81 of the constraint seat 8 with the insertion rod 34 of the constraint frame 3 and push it in so that the insertion rod 34 is fully inserted into the slot 81. In this state, the mating half-grooves 82 of the inner wall of the slot 81 and the side wall of the insertion rod 34 are aligned with each other. Under the action of the mating spring 92, the mating half-pieces 91 partially rotate out of their respective mating half-grooves 82, thereby embedding into the other mating half-grooves 82, thus locking the constraint seat 8 and the constraint frame 3. During disassembly, simply move one of the mating half-pieces 91 with the unlocking lever 93 to rotate it into its respective mating half-grooves 82, and the constraint seat 8 can be "unlocked" and removed, greatly improving the operational convenience of the overall structure.

[0053] The above are preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made to the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A torsion-resistant composite cable specifically for solar thermal power generation heliostats, characterized in that: It includes a wire core (1) and a sheath (2), with the sheath (2) covering the outside of the wire core (1); the sheath (2) includes a wrapping layer (21), an armor layer (23) and a wear-resistant layer (25), which are arranged sequentially from the inside to the outside.

2. The torsion-resistant composite cable for solar thermal power generation heliostats according to claim 1, characterized in that: An inner lining layer (22) is provided between the wrapping layer (21) and the armor layer (23), and an outer protective layer (24) is provided between the armor layer (23) and the wear-resistant layer (25).

3. The torsion-resistant composite cable for solar thermal power generation heliostats according to claim 1, characterized in that: The armor layer (23) is covered with multiple layers from the inside to the outside.

4. The torsion-resistant composite cable for solar thermal power generation heliostats according to claim 1, characterized in that: The outer side of the sheath (2) is provided with a constraint frame (3), and the constraint frame (3) has a plurality of constraint grooves (4) for the sheath (2) to be inserted into; a constraint block (41) is provided protruding from the groove opening of the constraint groove (4).

5. The torsion-resistant composite cable for solar thermal power generation heliostats according to claim 4, characterized in that: The constraint frame (3) is provided with multiple constraints along the length of the sheath (2), and the constraint slots (4) of two adjacent constraint frames (3) are staggered; the constraint frame (3) is connected with locking bolts (5), and the locking bolts (5) are connected in series with all the constraint frames (3).

6. The torsion-resistant composite cable for solar thermal power generation heliostats according to claim 5, characterized in that: The surface of the constraint frame (3) is provided with two positioning strips (31), and a positioning area (32) for adjacent constraint frames (3) to be embedded is formed between the two positioning strips (31). The side walls of the two positioning strips (31) that are close to each other are provided with constraint springs (33).

7. The torsion-resistant composite cable for solar thermal heliostats according to claim 5, characterized in that: A limiting strip (6) is hinged on the constraint frame (3). The two ends of the limiting strip (6) form a limiting end (61) and a pushing end (62) respectively. When the pushing end (62) is driven to swing, the limiting end (61) of the limiting strip (6) abuts against or disengages from the outer surface of the sheath (2).

8. The torsion-resistant composite cable for solar thermal power generation heliostats according to claim 7, characterized in that: A pusher (7) is slidably mounted on the constraint frame (3). The side wall of the pusher (7) has a guide surface (71). When the locking bolt (5) passes through the constraint frame (3), the pusher (7) abuts against the locking bolt (5), and the pusher (7) pushes the push end (62) of the limit strip (6) through the guide surface (71), and forces the limit end (61) of the limit strip (6) to abut against the outer surface of the sheath (2).

9. A torsion-resistant composite cable for solar thermal power generation heliostats according to claim 4, characterized in that: The constraint frame (3) is equipped with a constraint seat (8), and a constraint groove (4) is provided on the constraint seat (8); a docking component (9) is provided between the constraint frame (3) and the constraint seat (8), and the constraint frame (3) and the constraint seat (8) are detachably connected through the docking component (9).

10. A torsion-resistant composite cable for solar thermal power generation heliostats according to claim 9, characterized in that: The constraint frame (3) has a rod (34), and the constraint seat (8) has a slot (81) for inserting the rod (34); the inner wall of the slot (81) and the side wall of the rod (34) are provided with a docking half-groove (82). When the rod (34) is fully inserted into the slot (81), the two docking half-grooves (82) are connected to each other; the docking assembly (9) includes a docking half block (91) and a docking spring (92). There are two docking half blocks (91) and they are rotatably installed in the two docking half-grooves (82) respectively; the docking spring (92) is located in the docking half-groove (82). The docking spring (92) normally forces the docking half block (91) to partially rotate out of the corresponding docking half-groove (82).

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