Protective device with umbrella-shaped cable-membrane structure

Abstract

The utility model discloses a protection device with an umbrella-shaped cable-membrane structure, which is used for protection in a tower drum of a wind turbine generator system and comprises an umbrella-shaped structure, and the umbrella-shaped structure comprises a base, a plurality of umbrella rib connecting rods and an umbrella cover, and the umbrella rib connecting rods are hinged to the base in a radial mode. The application of the umbrella-shaped cable-membrane structure realizes the lightweight design of the protection platform, the accessory cost of a project can be effectively reduced, and the umbrella rib connecting rods are hinged to the base, so that the included angle between the umbrella rib connecting rods and the base can be adjusted, the protection device with the umbrella-shaped cable-membrane structure can be switched to be in an opening and closing state, and the protection effect is improved. Meanwhile, the opening amplitude can be changed, so that protection platforms of different sizes are obtained to adapt to towers of different diameters, the adaptability of the protection device with the umbrella-shaped cable-membrane structure is improved, compared with an all-steel protection platform, the protection device with the umbrella-shaped cable-membrane structure is low in cost and light in weight, and the umbrella cover can collect small-size sundries.

Description

Technical Field

[0001] The utility model relates to the technical field of wind turbines, and particularly relates to a protection device with an umbrella-shaped cable-membrane structure. Background Art

[0002] The single-unit capacity of wind turbines is getting larger and larger, and the tower height is getting higher and higher, which has become a major development trend in the wind power industry in recent years. The quantity and types of electrical equipment and accessories in the tower barrel have also increased continuously with the increase of the single-unit capacity of the unit, and the safety protection requirements for the electrical equipment at the tower bottom have become increasingly prominent.

[0003] The bottom diameter of the traditional flexible tower is small, and a full-steel integral platform is mostly used as the protection platform. With the increase of the tower height and the popularization of the steel-concrete composite tower technology, the bottom diameter of the wind turbine tower is constantly increasing, and the problems of large weight and high cost of the full-steel integral platform are obvious, and it is difficult to replace during later maintenance.

[0004] The anti-falling net is also a commonly used anti-falling object solution, but it cannot block small-volume sundries and cannot protect the bottom equipment in the wind power tower barrel. Content of the Utility Model

[0005] Therefore, the purpose of the utility model is to provide a protection device with an umbrella-shaped cable-membrane structure to reduce the weight of the protection device, lower the cost, and can block and collect small-volume sundries.

[0006] To solve the above technical problems, the technical solution of the utility model is as follows:

[0007] A protection device with an umbrella-shaped cable-membrane structure for protecting inside the wind turbine tower barrel, comprising an umbrella-shaped structure, and the umbrella-shaped structure includes a base, a plurality of umbrella rib connecting rods radially hinged to the base, and an umbrella surface.

[0008] Furthermore, it further includes a fixed beam, both ends of the fixed beam are adapted to be connected to the inner side wall of the tower barrel, and a base lifting device is arranged on the fixed beam. The base lifting device includes a first motor, a first roller, and a base cable; the first motor can drive the first roller to rotate, one end of the base cable is connected to a base lifting lug at the top of the base, and the other end is unwound and wound around the first roller.

[0009] Furthermore, a connecting rod lifting device is also arranged on the fixed beam. The connecting rod lifting device includes a second motor, a second roller, and a plurality of connecting rod cables; the plurality of connecting rod cables are connected to the plurality of umbrella rib connecting rods in one-to-one correspondence. The second motor can drive the second roller to rotate, one end of the connecting rod cable is connected to a connecting rod lifting lug on the umbrella rib connecting rod, and the other end is unwound and wound around the second roller.

[0010] Further, it also includes a moving frame, a third motor, a rack, and a gear; the moving frame includes a first bracket, a second bracket, and a third bracket connected integrally; wherein,

[0011] The first motor is fixed on the first bracket, and the first roller is installed inside the first bracket;

[0012] The second motor is fixed on the second bracket, and the second roller is installed inside the second bracket;

[0013] The third motor is fixed on the third bracket, the gear is located inside the third bracket, the third motor can drive the gear to rotate, the rack is installed on the fixed beam along the length direction of the fixed beam, and the gear can roll along the rack under the drive of the third motor.

[0014] Further, a first notch is formed on the bottom wall of the first bracket, and the base cable enters the first bracket from the first notch and is unwound and wound around the first roller; and / or, a plurality of second notches are formed on the side wall of the second bracket corresponding to the plurality of link cables, the plurality of second notches are arranged at intervals around the side wall of the moving frame, and the link cables enter the second bracket from the second notches and are unwound and wound around the second roller.

[0015] Further, it also includes a plurality of limiting cables, one end of each limiting cable is connected to a link hole on the umbrella rib link, and the other end bypasses a tower barrel fixed pulley fixed on the inner wall of the tower barrel and is connected to the inner side wall of the tower barrel.

[0016] Further, it also includes a safety cable, one end of the safety cable is connected to the base, and the other end enters the first bracket from the bottom of the first bracket and passes through the side wall of the first bracket, bypasses a bracket fixed pulley installed on the side wall of the moving frame and a tower barrel fixed pulley installed on the inner side wall of the tower barrel, and is connected to the inner side wall of the tower barrel.

[0017] Further, the base lifting device is located below the fixed beam, the link lifting device is located above the fixed beam, and the output shaft of the third motor is arranged perpendicular to the length direction of the fixed beam.

[0018] Further, the umbrella surface is a flame-retardant umbrella surface.

[0019] Further, a storage bag is provided at the bottom of the base for collecting fallen sundries.

[0020] The technical solution of the present utility model has the following advantages:

[0021] 1. The protective device with an umbrella-shaped cable-membrane structure provided by the present utility model is used for protection inside the tower barrel of a wind turbine. It includes an umbrella-shaped structure, which consists of a base, a plurality of umbrella rib linkages radially hinged to the base, and an umbrella surface. Compared with the traditional fully steel integral platform of a wind power tower barrel as a protective platform, the application of the umbrella-shaped cable-membrane structure realizes the lightweight design of the protective platform, which can effectively reduce the accessory cost of the project. Moreover, since the umbrella rib linkages are hinged to the base, the included angle between the umbrella rib linkages and the base can be adjusted, enabling the protective device with the umbrella-shaped cable-membrane structure to switch between the open and closed states. At the same time, the opening amplitude can also be changed, thereby obtaining protective platforms of different sizes to adapt to tower racks of different diameters, and further improving the adaptability of the protective device with the umbrella-shaped cable-membrane structure. The protective device with the umbrella-shaped cable-membrane structure has a lower cost and lighter weight compared with the fully steel protective platform. In addition, the umbrella surface can block and collect small-volume sundries.

[0022] 2. The protective device with an umbrella-shaped cable-membrane structure provided by the present utility model further includes a mobile rack, a third motor, a rack, and a gear. The first motor, the second motor, and the third motor are all fixed on the mobile rack. The third motor can drive the gear to rotate. The rack is installed on the steel beam along the length direction of the steel beam, and the gear can roll along the rack under the drive of the third motor. In this way, the position of the umbrella-shaped structure can be adjusted, so that the use of the umbrella-shaped structure is not affected by the electrical equipment layout on the equipment platform at the bottom. When installing and maintaining the umbrella-shaped structure, a suitable site can be selected for lifting.

[0023] 3. For the protective device with an umbrella-shaped cable-membrane structure provided by the present utility model, the umbrella surface is a flame-retardant umbrella surface, which can effectively protect the upper structure in case of a fire and gain precious time for fire fighting and disaster relief.

[0024] 4. For the protective device with an umbrella-shaped cable-membrane structure provided by the present utility model, a storage bag is provided at the bottom of the base for collecting fallen sundries. Then, in cooperation with the movement of the mobile rack to drive the umbrella-shaped structure to move to the side of the ladder, the aerial cleaning of sundries can be realized, effectively improving the operation and maintenance efficiency of the platform. Description of the Drawings

[0025] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0026] Figure 1 It is a three-dimensional schematic diagram of the protective device with an umbrella-shaped cable-membrane structure in the embodiment of the present utility model;

[0027] Figure 2 Front view of the protection device with an umbrella-shaped cable-membrane structure in the embodiment of the present utility model;

[0028] Figure 3 is Figure 2 Enlarged view at position F in

[0029] Figure 4 Schematic three-dimensional view of the protection device with an umbrella-shaped cable-membrane structure in the embodiment of the present utility model after removing the fixed beam and the umbrella-shaped structure;

[0030] Figure 5 Front view of the protection device with an umbrella-shaped cable-membrane structure in the embodiment of the present utility model after removing the fixed beam and the umbrella-shaped structure;

[0031] Figure 6 Side view of the protection device with an umbrella-shaped cable-membrane structure in the embodiment of the present utility model after removing the fixed beam and the umbrella-shaped structure;

[0032] Figure 7 Bottom view of the protection device with an umbrella-shaped cable-membrane structure in the embodiment of the present utility model after removing the fixed beam and the umbrella-shaped structure;

[0033] Figure 8 Schematic three-dimensional view of the umbrella-shaped structure in the protection device with an umbrella-shaped cable-membrane structure in the embodiment of the present utility model in the open state;

[0034] Figure 9 Schematic three-dimensional view of the umbrella-shaped structure in the embodiment of the present utility model;

[0035] Figure 10 Schematic partial three-dimensional enlarged view of the umbrella-shaped structure in the embodiment of the present utility model;

[0036] Figure 11 Front view of the umbrella-shaped structure in the protection device with an umbrella-shaped cable-membrane structure in the embodiment of the present utility model in the open state;

[0037] Figure 12 Front view of the umbrella-shaped structure in the protection device with an umbrella-shaped cable-membrane structure in the embodiment of the present utility model in the retracted state and located on the left side.

[0038] Explanation of reference numerals:

[0039] 1. Umbrella-shaped structure; 11. Base; 111. Base lifting lug; 12. Umbrella rib connecting rod; 121. Connecting rod lifting lug; 122. Connecting rod hole; 21. First motor; 22. First roller; 31. Second motor; 32. Second roller; 41. Third motor; 5. Moving frame; 51. First bracket; 511. First notch; 52. Second bracket; 521. Second notch; 53. Third bracket; 531. Notch; 61. Gear; 7. Fixed beam; 71. Rack; 81. Bracket fixed pulley; 82. Tower barrel fixed pulley; 9. Umbrella surface; A. Base cable; B. Safety cable; C. Connecting rod cable; D. Limit cable; E. Storage bag. Detailed implementation manners

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0041] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0042] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0043] In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0044] Such as Figures 1 to 12As shown in the figure, the present utility model provides a protection device with an umbrella-shaped cable-membrane structure (hereinafter referred to as the protection device) for protection inside the wind turbine tower barrel. The protection device includes an umbrella-shaped structure 1, and the umbrella-shaped structure 1 includes a base 11, a plurality of umbrella rib linkages 12 radially hinged to the base 11, and an umbrella surface 9.

[0045] In the protection device with an umbrella-shaped cable-membrane structure in the present utility model, compared with the traditional fully steel integral platform of the wind power tower barrel as the protection platform, it realizes the lightweight design of the protection platform, can effectively reduce the accessory cost of the project. And since the umbrella rib linkage 12 and the base 11 are hinged, the included angle between the umbrella rib linkage 12 and the base 11 can be adjusted, so that the umbrella-shaped structure 1 can be switched between the open and closed states, and at the same time, the opening amplitude can also be changed, thus obtaining protection platforms of different sizes to adapt to tower barrels of different diameters, and further improving the adaptability of the protection device. The protection device with an umbrella-shaped cable-membrane structure has a lower cost and lighter weight compared with the fully steel protection platform. In addition, the umbrella surface 9 can block and collect small-volume sundries, and can improve the installation and operation and maintenance efficiency of the protection platform through the deformation of the umbrella-shaped cable-membrane structure.

[0046] Specifically, the number of the umbrella rib linkages 12 is eight. The bottom end of the umbrella rib linkage 12 is hinged to the base 11. A linkage lifting lug 121 is provided in the middle of the umbrella rib linkage 12, and a linkage hole 122 for fixing the umbrella surface 9 is provided at the top end of the umbrella rib linkage 12.

[0047] Furthermore, the protection device further includes a fixed beam 7. Specifically, the fixed beam 7 is an H-shaped steel beam. Both ends of the fixed beam 7 are fixedly connected to the inner side wall of the tower barrel by bolts.

[0048] As Figures 2 to 6 shown, a base lifting device is detachably fixed on the fixed beam 7. The base lifting device includes a first motor 21, a first drum 22, and a base cable A (as Figure 3 shown). The first motor 21 can drive the first drum 22 to rotate. One end of the base cable A is connected to a base lifting lug 111 at the top of the base 11 (as Figure 2 and Figure 3 shown), and the other end is unwound and wound around the first drum 22. In this way, the open and closed states of the umbrella-shaped structure 1 can be switched by lifting the base 11, and the opening amplitude of the umbrella-shaped structure 1 can be adjusted to meet different requirements.

[0049] Furthermore, the protection device further includes a linkage lifting device, and the linkage lifting device is detachably fixed on the fixed beam 7. As Figures 2 to 6 shown, the linkage lifting device includes a second motor 31, a second drum 32, and multiple linkage cables C (as Figure 2 and Figure 3As shown in the figure; multiple connecting rod cables C are connected to multiple umbrella rib connecting rods 12 in a one-to-one corresponding position. The second motor 31 can drive the second drum 32 to rotate. One end of the connecting rod cable C is connected to the connecting rod lug 121 on the umbrella rib connecting rod 12, and the other end is unwound and wound around the second drum 32. In this way, when the base 11 remains in place, the opening amplitude of the umbrella structure 1 can still be adjusted to meet different requirements.

[0050] Furthermore, the base lifting device is located below the fixed beam 7, and the output shaft of the first motor 21 is parallel to the length direction of the fixed beam 7. The connecting rod lifting device is located above the fixed beam 7, and the output shaft of the second motor 31 is vertically arranged and perpendicular to the length direction of the fixed beam 7.

[0051] Furthermore, as Figures 2 to 6 shown, it further includes a moving frame 5, a third motor 41, a rack 71, and a gear 61. The first motor 21, the second motor 31, and the third motor 41 are all fixed on the moving frame 5. The output shaft of the third motor 41 is horizontally arranged and perpendicular to the length direction of the fixed beam 7 and perpendicular to the output shaft of the second motor 31. The rack 71 is installed on the fixed beam 7 along the length direction of the fixed beam 7, and the gear 61 can roll along the rack 71 under the drive of the third motor 41. In this way, the position of the umbrella structure 1 can be adjusted, so that the use of the umbrella structure 1 is not affected by the electrical equipment layout on the equipment platform at the bottom, and a suitable site can be selected for lifting during the installation and operation and maintenance of the umbrella structure 1.

[0052] Specifically, the moving frame 5 includes a first bracket 51, a second bracket 52, and a third bracket 53 that are fixedly connected together. The first motor 21 is fixed on the first bracket 51, and the first drum 22 is horizontally arranged inside the first bracket 51. The second motor 31 is fixed on the second bracket 52, and the second drum 32 is vertically arranged inside the second bracket 52. The third motor 41 is fixed on the third bracket 53. Both ends of the fixed beam 7 pass through the notches 531 on both side walls of the third bracket 53 (as Figure 4 shown). There are two racks 71, which are respectively arranged on the inner bottom wall of the lower flange of the H-shaped steel beam and are located on both sides of the web of the H-shaped steel beam. Correspondingly, two gears 61 are also provided. The two gears 61 are respectively located on both sides of the web, and one of the gears 61 is used as the driving gear and is driven to rotate by the third motor 41, and the other gear 61 is used as the driven gear and is rotatably installed on the third bracket 53. The rack 71 provides support for the roller 61, and when the third motor rotates, the roller 61 will roll along the rack 71, driving the moving frame 5 to move along the length direction of the fixed beam 7. Of course, the number of driven gears 61 can also be other values, which are not specifically limited here and can be set according to actual needs.

[0053] Furthermore, a first notch 511 is formed on the bottom wall of the first bracket 51 (asFigure 7 As shown in the figure, the top end of the base cable A enters the first bracket 51 from the first notch 511 and is unrolled and wound around the first drum 22; and / or, a plurality of second notches 521 (such as Figure 4 As shown in the figure) are provided on the side wall of the second bracket 52 corresponding to the plurality of link cables C. The plurality of second notches 521 are arranged at intervals around the side wall of the moving frame 5. The top end of the link cable C enters the second bracket 52 from the second notch 521 and is unrolled and wound around the second drum 32.

[0054] Furthermore, it further includes a limiting cable D (such as Figure 2 As shown in the figure), one end of the limiting cable D is connected to the upper link hole 122 of the umbrella rib link 12 adjacent to the tower barrel fixed pulley 82, and the other end bypasses the tower barrel fixed pulley 82 fixed on the inner wall of the tower barrel (such as Figure 2 As shown in the figure) and is connected to the inner side wall of the tower barrel. The limiting cable D can limit the umbrella-shaped structure 1 to prevent the umbrella-shaped structure from rotating.

[0055] Furthermore, as Figure 3 As shown in the figure, it further includes a safety cable B. As the last safety cable, one end of the safety cable B is connected to the base lifting lug 111, and the other end enters the first bracket 51 from the bottom of the first bracket 51 and passes through the side wall of the first bracket 51, and bypasses the bracket fixed pulley 81 installed on the side wall of the first bracket 51 and the tower barrel fixed pulley 82 installed on the inner side wall of the tower barrel and is connected to the inner side wall of the tower barrel.

[0056] Furthermore, the umbrella surface is a flame-retardant umbrella surface made of a flame-retardant material, specifically a film-like structure made of a high-strength flexible flame-retardant polyvinyl chloride material, which can effectively protect the upper structure in case of a fire and gain precious time for fire fighting and disaster relief.

[0057] Furthermore, a storage bag E (such as Figure 3 As shown in the figure) is provided at the bottom of the base 11 for collecting fallen sundries. Then, in cooperation with the movement of the moving frame 5 to drive the umbrella-shaped structure 1 to move to the side of the ladder, the aerial cleaning of sundries can be realized, effectively improving the platform operation and maintenance efficiency.

[0058] Preferably, the base cable A, the link cable C, the limiting cable D, and the safety cable B are all made of steel wire ropes.

[0059] The following introduces the usage method of the protection device with an umbrella-shaped cable-membrane structure:

[0060] Contract the umbrella-shaped structure 1: Untie the limiting cable D and the safety cable B, start the first motor 21 to drive the first drum 22 to rotate, lower the base cable A, start the second motor 31 to drive the second drum 32 to rotate, and slowly tighten the link cable C to make the umbrella-shaped structure 1 in a contracted state;

[0061] Moving umbrella structure 1: Start the third motor 41 to drive the driving gear to roll along the rack 71, drive the moving frame 5 to slowly approach the inner wall of the tower barrel to the left (in the Figure 11 viewpoint), and at the same time pay attention to tightening the Figure 12 limiting cable D and safety cable B located on the left as shown in the figure;

[0062] Lowering the umbrella structure 1: Start the first motor 21 to drive the first drum 22 to rotate, lower the base cable A, start the second motor 31 to drive the second drum 32 to rotate, lower the connecting rod cable C, and at the same time pay attention to loosening the limiting cable D and safety cable B, lower the entire retracted umbrella structure 1 to 0.5 m above the ground. Of course, the distance of the umbrella structure 1 can also be other values, which are not specifically limited here and can be selected according to actual needs.

[0063] Cleaning the umbrella structure 1: Remove the storage bag E at the bottom of the base 11 and clean up the collected sundries.

[0064] Resetting the umbrella structure 1: After cleaning and inspection, lift the umbrella structure 1, move the umbrella structure 1, and then deploy the umbrella structure 1 to complete the reset of the umbrella structure 1.

[0065] Obviously, the above embodiments are only examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. A protective device with an umbrella-shaped cable-membrane structure, used for protection inside a wind turbine tower, characterized in that: The umbrella-shaped structure (1) comprises a base (11), a plurality of rib connecting rods (12) radially hinged on the base (11), and an umbrella surface (9).

2. The protective device with an umbrella-shaped cable-membrane structure according to claim 1, characterized in that: It also includes a fixed beam (7), both ends of which are suitable for being connected to the inner wall of the tower, and a base lifting device is provided on the fixed beam (7), and the base lifting device includes a first motor (21), a first roller (22) and a base cable (A); the first motor (21) can drive the first roller (22) to rotate, one end of the base cable (A) is connected to the base lifting ear (111) at the top of the base (11), and the other end is unwound and wound around the first roller (22).

3. The protective device with an umbrella-shaped cable-membrane structure according to claim 2, characterized in that: The fixed beam (7) is also provided with a connecting rod lifting device, which comprises a second motor (31), a second roller (32) and a plurality of connecting rod cables (C); the plurality of connecting rod cables (C) are connected to the plurality of umbrella rib connecting rods (12) in a one-to-one corresponding manner, the second motor (31) can drive the second roller (32) to rotate, one end of the connecting rod cable is connected to the connecting rod hanging ear (121) on the umbrella rib connecting rod (12), and the other end is unwound and wound around the second roller (32).

4. The protective device with an umbrella-shaped cable-membrane structure according to claim 3, characterized in that: It also includes a moving frame (5), a third motor (41), a rack (71), and a gear (61); the moving frame (5) includes a first bracket (51), a second bracket (52), and a third bracket (53) connected as one body; wherein, The first motor (21) is fixed on the first bracket (51), and the first roller (22) is installed in the first bracket (51); The second motor (31) is fixed on the second bracket (52), and the second roller (32) is installed in the second bracket (52); The third motor (41) is fixed on the third bracket (53), the gear (61) is located in the third bracket (53), the third motor (41) can drive the gear (61) to rotate, the rack (71) is installed on the fixed beam (7) along the length direction of the fixed beam (7), and the gear (61) can roll along the rack (71) under the drive of the third motor (41).

5. The protective device with an umbrella-shaped cable-membrane structure according to claim 4, characterized in that: A first slot (511) is provided on the bottom wall of the first bracket (51), and the base cable (A) enters the first bracket (51) through the first slot (511) and is unwound and wound around the first roller (22); and / or, a plurality of second slots (521) are provided on the side wall of the second bracket (52) corresponding to the plurality of connecting rod cables (C), and the plurality of second slots (521) are spaced around the side wall of the mobile frame (5), and the connecting rod cable (C) enters the second bracket (52) through the second slot (521) and is unwound and wound around the second roller (32).

6. The protective device with an umbrella-shaped cable-membrane structure according to claim 4, characterized in that: It also includes a plurality of limiting cables (D), one end of each of which is connected to a connecting rod hole (122) on the umbrella rib connecting rod (12), and the other end of each of which is connected to the inner wall of the tower by bypassing a tower fixed pulley (82) fixed on the inner wall of the tower.

7. The protective device with an umbrella-shaped cable-membrane structure according to claim 6, characterized in that: It also includes a safety cable (B), one end of which is connected to the base (11), and the other end of which enters the first bracket (51) from the bottom of the first bracket (51) and passes through the side wall of the first bracket (51), and bypasses the bracket fixed pulley (81) installed on the side wall of the mobile frame (5) and the tower fixed pulley (82) installed on the inner wall of the tower, and is connected to the inner wall of the tower.

8. The protective device with an umbrella-shaped cable-membrane structure according to claim 4, characterized in that: The base lifting device is located below the fixed beam (7), the connecting rod lifting device is located above the fixed beam (7), and the output shaft of the third motor (41) is arranged perpendicular to the length direction of the fixed beam (7).

9. The protective device with an umbrella-shaped cable-membrane structure according to any one of claims 1 to 8, characterized in that: The umbrella surface is a flame retardant umbrella surface.

10. The protective device with an umbrella-shaped cable-membrane structure according to any one of claims 1 to 8, characterized in that: A storage bag (E) is provided at the bottom of the base (11) for collecting dropped debris.

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