Platform lifting and locking device for ocean engineering equipment

Abstract

The invention relates to the technical field of ocean platform lifting and locking, in particular to a platform lifting and locking device for ocean engineering equipment, which comprises an ocean platform, supporting frames which sink into the seabed to support the whole ocean platform are arranged at the upper end of the ocean platform in an array mode, and limiting rods are arranged on the outer walls of the supporting frames in an array mode. A lifting mechanism for controlling the ocean platform to move up and down is arranged at the upper end, close to the supporting frame, of the ocean platform and comprises mounting boxes, the mounting boxes are fixedly mounted at the upper end, close to the supporting frame, of the ocean platform in an array mode, and locking mechanisms for locking the platform to the fixed position are arranged in the positions, close to the limiting rods, of the mounting boxes. After the ocean platform is lifted to a designated position, the locking rope is wound and fixed to the outer wall of the limiting rod, so that the ocean platform is fixed, the situation that a traditional hydraulic locking mechanism cannot conduct fastening and locking, and consequently operation of a lifting system is unstable or the locking function fails is avoided, and lifting and locking of the platform are more stable.

Description

Technical Field

[0001] This invention relates to the field of marine platform lifting and locking technology, specifically a platform lifting and locking device for marine engineering equipment. Background Technology

[0002] Marine engineering refers to new construction, reconstruction, and expansion projects aimed at developing, utilizing, protecting, and restoring marine resources, with the main body of the project located on the seaward side of the coastline. Generally, the main contents of marine engineering can be divided into two parts: resource development technology and equipment and facility technology. Specifically, it includes: land reclamation and seawall engineering; artificial islands, offshore and seabed material storage facilities, cross-sea bridges, and submarine tunnels; submarine pipelines and submarine power (optical) cables; marine mineral resource exploration and development and its ancillary projects; marine energy development and utilization projects such as offshore tidal power stations, wave power stations, and thermal energy conversion power stations; large-scale mariculture farms and artificial reef projects; comprehensive seawater utilization projects such as salt fields and seawater desalination; and marine recreation, sports, and landscape development projects.

[0003] Existing marine engineering lifting platforms typically use rope winding and multiple sets of mechanical gears rotating on a rack to lift the entire platform. After the platform is pushed to the appropriate position, a locking block is inserted into the locking device via a hydraulic telescopic device to fix the entire platform. However, during long-term use, the high humidity and high salt spray conditions in the marine environment can accelerate the corrosion of metal components, reducing material strength and fatigue life. After supporting the platform for a long time, the gears and racks in the lifting locking device may experience fatigue deformation and fail to engage with the gears on the rack, or they may even break and fail to lock. This can lead to instability in the lifting system or failure of the locking function, and in severe cases, may cause the platform to overturn or suffer structural damage. Therefore, based on the problems mentioned above, we provide a lifting locking device for marine engineering equipment. Summary of the Invention

[0004] The purpose of this invention is to provide a platform lifting and locking device for marine engineering equipment to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A platform lifting and locking device for marine engineering equipment includes a marine platform. The upper end of the marine platform is provided with an array of support frames that are submerged on the seabed to support the entire marine platform. Limit rods are arrayed on the outer wall of the support frames. The upper end of the marine platform near the support frames is provided with a lifting mechanism for controlling the up and down movement of the marine platform. The lifting mechanism includes mounting boxes, and the mounting boxes are all fixedly mounted in an array on the upper end of the marine platform near the support frames. The interior of the mounting boxes near the limit rods is provided with a locking mechanism for locking the platform in a fixed position.

[0007] Preferably, the mounting box has an array of lifting cylinders arranged inside near the limiting rod. A lifting rope is wound around the outer wall of the lifting cylinder, and the upper end of the lifting rope is fixedly connected to the upper end of the support frame, while the other end of the lifting rope is fixedly installed at the lower end of the support frame.

[0008] Preferably, a lifting motor is fixedly installed on the inner wall of the mounting box near the lifting cylinder, a torque box is fixedly installed at the output end of the lifting motor, a driven gear ring is fixedly sleeved on the outer wall of the lifting cylinder near the torque box, a rotating rod is fixedly installed at the output end of the torque box near the driven gear ring, and a driving gear is fixedly installed at one end of the rotating rod near the driven gear ring, and the driving gear is meshed with the driven gear ring.

[0009] Preferably, the locking mechanism includes a locking block, which is disposed at the lower end of the offshore platform. A connecting rope is fixedly installed at the upper end of the locking block. A winding disc is rotatably disposed inside the offshore platform near the connecting rope. The connecting rope is wound and installed on the outer wall of the winding disc. Rotating shafts are fixedly installed at both ends of the winding disc. A winding cylinder is fixedly sleeved on the inner wall of the rotating shaft.

[0010] Preferably, a gearbox is fixedly connected to the rotating shaft installed at the end of the winding reel away from the winding drum, and a reset motor is fixedly installed at the input end of the gearbox.

[0011] Preferably, a rotating rope is wound and installed on the outer wall of the winding drum, and a rotating disk is rotatably installed on the inner wall of the mounting box near the rotating rope, with the end of the rotating rope away from the winding drum wound on the outer wall of the rotating disk.

[0012] Preferably, multiple mounting blocks are arrayed on the inner wall of the mounting box near the rotating disk. Each mounting block has a mounting cylinder fixedly mounted on one end near the limiting rod, and the mounting cylinder is sleeved on the outer wall of the limiting rod. A sliding rod is slidably mounted on the inner wall of the mounting block, and a control rope is fixedly mounted between the sliding rod and the rotating disk.

[0013] Preferably, a locking rope is provided inside the mounting cylinder, and multiple connecting rings are provided on the outer wall of the locking rope. Each connecting ring is rotatably connected to a control telescopic rod. A fixing rope is fixedly connected to the upper end of the locking rope, and a fixing block is fixedly connected to the end of the fixing rope away from the locking rope. A linkage rope is fixedly installed at the lower end of the locking rope, and a linkage block is fixedly installed at the end of the linkage rope away from the locking rope.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. This invention allows the offshore platform to be raised to a designated position, and then the locking rope is wound and fixed to the outer wall of the limit rod, thereby fixing the offshore platform. This avoids the instability of the lifting system or the failure of the locking function caused by the inability to lock properly in traditional hydraulic locking mechanisms, making the lifting and locking of the platform more stable.

[0016] 2. In this invention, after the locking block descends, it acts as a damper under the influence of gravity, reducing the sway of the offshore platform under the influence of waves and wind, thus making the offshore platform more stable. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall appearance and structure of the present invention;

[0018] Figure 2 This is a partial schematic diagram of the external structure of the present invention;

[0019] Figure 3 This is a schematic diagram of the structure of the winding disk in this invention;

[0020] Figure 4 This is a schematic diagram of the internal structure of the mounting box in this invention;

[0021] Figure 5 This is a schematic diagram of the lifting cylinder in this invention;

[0022] Figure 6 This is a schematic diagram of the rotating disk in this invention;

[0023] Figure 7 This is a schematic diagram of the mounting cylinder in this invention;

[0024] Figure 8 This is a schematic diagram of the locking rope structure in this invention;

[0025] Figure 9 This is a schematic diagram of the structure for controlling the telescopic rod in this invention.

[0026] The attached diagram lists the components represented by each number as follows:

[0027] 1. Offshore platform; 101. Support frame; 102. Limiting rod;

[0028] 2. Lifting mechanism; 201. Mounting box; 202. Lifting motor; 203. Lifting cylinder; 204. Lifting rope; 205. Torque box; 206. Driven gear ring; 207. Rotating rod; 208. Driving gear;

[0029] 3. Locking mechanism; 301. Locking block; 302. Connecting rope; 303. Rotating disc; 304. Mounting block; 305. Mounting cylinder; 306. Control rope; 307. Locking rope; 308. Sliding rod; 309. Control telescopic rod; 310. Connecting ring; 311. Fixing block; 312. Fixing rope; 313. Linkage block; 314. Linkage rope; 315. Stop bar; 316. Rotating rope; 317. Winding disc; 318. Rotating shaft; 319. Winding cylinder; 320. Gearbox; 321. Reset motor. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] This invention provides a technical solution: such as Figure 1 - Figure 9 As shown, a platform lifting and locking device for marine engineering equipment includes a marine platform 1. An array of support frames 101, submerged on the seabed and supporting the entire marine platform 1, is arranged at the upper end of the marine platform 1. Limiting rods 102 are arranged in an array on the outer wall of the support frames 101. These limiting rods 102 are made of a rough, corrosion-resistant material, which will not be described in detail here. A lifting mechanism 2, controlling the vertical movement of the marine platform 1, is arranged near the upper end of the marine platform 1 close to the support frames 101. The lifting mechanism 2 includes mounting boxes 201, which are all fixedly installed in an array on the upper end of the marine platform 1 near the support frames 101. The mounting boxes 201 are located near the limiting rods 102. The platform is internally equipped with a locking mechanism 3 to lock it in a fixed position. Specifically, when the offshore platform 1 moves to a designated position and needs to be raised or lowered, the support frame 101 is moved downward by the lifting mechanism 2. After the support frame 101 touches the seabed, the limit rod 102 continues to move downward, thereby raising the offshore platform 1. When the offshore platform 1 is raised to the designated position, the locking component in the locking mechanism 3 is wound and fixed to the outer wall of the limit rod 102, thereby fixing the offshore platform 1. This prevents the gears and racks in the lifting and locking device from fatigue deformation after supporting the platform for a long time, which could lead to instability in the lifting system. This makes the platform lifting and locking more stable.

[0032] Inside the mounting box 201 near the limit rod 102, there is an array of lifting cylinders 203. A lifting rope 204 is wound around the outer wall of the lifting cylinder 203, and the upper end of the lifting rope 204 is fixedly connected to the upper end of the support frame 101. The other end of the lifting rope 204 is fixedly installed at the lower end of the support frame 101. When the lifting cylinder 203 rotates in the forward direction, it winds the lifting rope 204 connected to the upper end of the support frame 101, and the lower end of the lifting rope 204 of the support frame 101 is released, causing the support frame 101 to move downward. When the lifting cylinder 203 moves in the reverse direction, it winds the lifting rope 204 connected to the lower end of the support frame 101, and the upper end of the lifting rope 204 of the support frame 101 is wound, causing the support frame 101 to move upward.

[0033] A lifting motor 202 is fixedly installed on the inner wall of the mounting box 201 near the lifting cylinder 203. A torque box 205 is fixedly installed at the output end of the lifting motor 202. The torque box 205 is existing technology and will not be described in detail here. The transmission ratio of the torque at the input end to the output end of the torque box 205 is 1:10. The torque box 205 reduces the output torque of the lifting motor 202 and increases the torque at the output end of the torque box 205, thereby making it easier for the lifting motor 202 to rotate the lifting cylinder 203 through the torque box 205. A driven gear ring 206 is fixedly sleeved on the outer wall of the lifting cylinder 203 near the torque box 205. A rotating rod 207 is fixedly installed at the output end of the torque box 205 near the driven gear ring 206. A driving gear 208 is fixedly installed at one end of the rotating rod 207 near the driven gear ring 206. The driving gear 208 and the driven gear ring are connected... The driven gear ring 206 and the driving gear 208 are meshed together. The diameter ratio of the driven gear ring 206 to the driving gear 208 is 15:1. Specifically, when the offshore platform 1 needs to be raised, the lifting motor 202 is started. The output end of the lifting motor 202 is fixedly connected to the input end of the torque box 205. The internal structure of the torque box 205 starts to work. The rotating rod 207 installed at the output end of the torque box 205 drives the driving gear 208 to start rotating. The driving gear 208 causes the driven gear ring 206 to drive the lifting cylinder 203 to start rotating. The entire offshore platform 1 is lifted by the winding and contraction of the lifting rope 204. When the rotation output torque of the lifting motor 202 is transmitted to the lifting cylinder 203 through the torque box 205, the torque is amplified by a hundredfold. This makes it more convenient for the lifting cylinder 203 to rotate, wind the lifting rope 204, and pull the support frame 101 up and down to lift the offshore platform 1.

[0034] The locking mechanism 3 includes a locking block 301, which is located at the lower end of the offshore platform 1. The locking block 301 is a block-shaped object resistant to seawater corrosion, as is available in the prior art. A gate is located at the lower end of the offshore platform 1 near the locking block 301. When the gate is closed, the locking block 301... It can be stored inside the offshore platform 1. The gravity of the locking block 301 causes the center of gravity of the offshore platform 1 to shift downward, making the offshore platform 1 more stable. A connecting rope 302 is fixedly installed at the upper end of the locking block 301. A winding disc 317 is rotatably installed inside the offshore platform 1 near the connecting rope 302, and the connecting rope 302 is wound and installed on the outer wall of the winding disc 317. A rotating shaft 318 is fixedly installed at both ends of the winding disc 317. A winding cylinder 319 is fixedly sleeved on the inner wall of the rotating shaft 318. Specifically, when the locking block 301 starts to move downward, the gravity generated by the locking block 301 pulls the winding disc 317 to start rotating. The winding disc 317 drives the rotating shaft 318 to start rotating, which in turn pulls the winding cylinder 319 to start rotating.

[0035] A gearbox 320 is fixedly connected to a rotating shaft 318 installed at the end of the winding disc 317 away from the winding drum 319. A reset motor 321 is fixedly installed at the input end of the gearbox 320. When it is necessary to store the released locking block 301 into the offshore platform 1, the reset motor 321 is started, so that the gearbox 320 transmits the power of the reset motor 321, so that the torque is greater. The rotating shaft 318 drives the winding disc 317 to start rotating, lifting the locking block 301 upward, making it easier to retract the locking block 301.

[0036] A rotating rope 316 is wound and installed on the outer wall of the winding drum 319. A rotating disk 303 is rotatably installed on the inner wall of the mounting box 201 near the rotating rope 316, with the end of the rotating rope 316 away from the winding drum 319 wound on the outer wall of the rotating disk 303. When the winding drum 319 starts to rotate and rewind, the winding drum 319 winds the rotating rope 316 onto the outer wall, causing the rotating rope 316 to pull the rotating disk 303 to start rotating. Multiple mounting blocks 304 are arrayed and installed on the inner wall of the mounting box 201 near the rotating disk 303, with the mounting blocks 304 close to the limit rod. One end of each 102 is fixedly installed with an installation cylinder 305, and the installation cylinder 305 is sleeved on the outer wall of the limiting rod 102. A sliding rod 308 is slidably installed on the inner wall of the installation block 304, and a control rope 306 is fixedly installed between the sliding rod 308 and the rotating disk 303. Specifically, when the rotating disk 303 starts to rotate, the sliding rod 308 in the installation block 304 is pulled by the control rope 306 to start moving, so that the internal structure of the installation cylinder 305 sleeved on the outer wall of the limiting rod 102 fixes the installation cylinder 305 to the outer wall of the limiting rod 102.

[0037] The mounting cylinder 305 contains a locking rope 307. Multiple connecting rings 310 are mounted on the outer wall of the locking rope 307. Each connecting ring 310 is rotatably connected to a control telescopic rod 309. These control telescopic rods 309 are electrically controlled telescopic rods in the prior art, which will not be elaborated upon here. A stop bar 315 perpendicular to the control telescopic rod 309 is mounted on the inner wall of the connecting ring 310, preventing the locking rope 307 from coiling and contacting the limiting rod 102. Activating the control telescopic rod 309 causes it to retract, pulling the connecting rings 310 to spread the locking rope 307 away from each other, thus preventing the locking rope 307 from contacting the limiting rod 102. A fixing rope 312 is fixedly connected to the upper end of the locking rope 307, and the fixing rope 312 is positioned away from the locking rope 307. One end of the sliding rod 308 is fixedly connected to a fixing block 311, and the fixing block 311 is fixedly installed at the end of the sliding rod 308 away from the control rope 306. The lower end of the locking rope 307 is fixedly installed with a linkage rope 314, and the end of the linkage rope 314 away from the locking rope 307 is fixedly installed with a linkage block 313, and the linkage block 313 is fixedly installed at the end of the sliding rod 308 away from the control rope 306. Specifically, when the control rope 306 pulls the sliding rod 308 to start moving, the sliding rod 308 drives the linkage rope 314 and the fixing rope 312 to start moving and pull the locking rope 307 to start contracting and closing. The locking rope 307 is pressed and adhered to the outer wall of the limit rod 102, so that the marine platform 1 is raised and moved to a suitable position, and then the marine platform 1 is fixed and locked at a suitable height, making the lifting and locking of the marine platform 1 more stable.

[0038] It should be noted that the winding force of the locking rope 307 in the locking mechanism 3 when locking the offshore platform 1 is determined by Euler's formula. When the total angle of contact between the locking rope 307 and the limiting rod 102 is θ, the relationship between the tension difference at both ends and the frictional force is as follows:

[0039]

[0040] Where F0 is the tension at both ends of the rope, e is the number of turns of the rope, and μ is the coefficient of friction. This means that the more turns the locking rope 307 makes, the larger θ becomes, and the friction increases exponentially, which can make the friction reach thousands of times the initial value, thereby continuously increasing the friction between the locking rope 307 and the limiting rod 102.

[0041] Each turn of the locking rope 307 generates an independent frictional force on the contact surface of the limiting rod 102. Multiple turns of the locking rope 307 are equivalent to the superposition of multiple frictional forces. This superposition is not a linear relationship, but is affected by the combined effect of the wrap angle and pressure distribution.

[0042] The greater the rotational force of the rotating disk 303, the stronger the positive pressure of the locking rope 307 on the limiting rod 102, thereby directly increasing the frictional force. According to the Coulomb friction model, the frictional force is:

[0043] f=μN, where N is the normal force. Tightening the locking rope 307 can significantly increase N, thereby increasing the friction.

[0044] It should be noted that when the offshore platform 1 rises to a suitable height and needs to be locked and secured, the winding reel 317 rotates to release the connecting rope 302, causing the locking block 301 to begin moving downwards under the action of gravity. The self-weight of the locking block 301 is converted into the tension of the locking rope 307, thereby making the tension of the offshore platform 1 more stable. At the same time, after the locking block 301 descends, it plays a damping and shock-absorbing role under the action of gravity, reducing the swaying amplitude of the offshore platform 1 under the blowing of waves and sea wind, making the offshore platform 1 more stable.

[0045] Working principle: When the offshore platform 1 moves to the designated position and needs to be raised or lowered, the lifting motor 202 is started. The output end of the lifting motor 202 is fixedly connected to the input end of the torque box 205. The internal structure of the torque box 205 starts to work. The rotating rod 207 installed at the output end of the torque box 205 drives the active gear 208 to start rotating. The active gear 208 causes the driven gear ring 206 to drive the lifting cylinder 203 to start rotating. Through the winding and retraction of the lifting rope 204, the entire offshore platform 1 is lifted. When the rotational output torque of the lifting motor 202 is transmitted to the lifting cylinder 203 through the torque box 205, the torque is amplified a hundredfold. This causes the lifting cylinder 203 to rotate and wind the lifting rope 204, pulling the support frame 101 up and down to lift the offshore platform 1. By replacing the gears in the traditional device with the lifting rope 204, the maintenance and replacement of the offshore lifting device are more convenient.

[0046] Once the offshore platform 1 is raised to the appropriate position, the switch gate located at the lower end of the locking block 301 is opened, causing the locking block 301 to move downwards under gravity. This downward movement of the locking block 301 pulls the winding disc 317 to rotate via the connecting rope 302. The rotating shaft 318 drives the winding drum 319 to rotate, which in turn drives the rotating disc 303 to rotate. The rotating disc 303 then causes the control rope 306 to pull the sliding rod 308 to move. The sliding rod 308 then drives the linkage rope 314 and the fixed rope 312 to move, pulling the locking rope 307 to retract and close. The locking rope 307 presses against the outer wall of the limit rod 102, thereby raising and moving the offshore platform 1 to the appropriate position and locking it at the appropriate height, making the lifting and locking of the offshore platform 1 more stable.

[0047] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0048] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A platform lifting and locking device for marine engineering equipment, comprising a marine platform (1), characterized in that: The upper end of the marine platform (1) is provided with an array of support frames (101) that are submerged in the seabed to support the entire marine platform (1). Limiting rods (102) are arrayed on the outer wall of the support frame (101). The upper end of the marine platform (1) near the support frame (101) is provided with a lifting mechanism (2) to control the up and down movement of the marine platform (1). The lifting mechanism (2) includes a mounting box (201), and the mounting boxes (201) are arrayed and fixedly installed on the upper end of the marine platform (1) near the support frame (101). The interior of the mounting box (201) near the limiting rod (102) is provided with a locking mechanism (3) to lock the platform in a fixed position.

2. The platform lifting and locking device for marine engineering equipment according to claim 1, characterized in that: The mounting box (201) is equipped with an array of lifting cylinders (203) inside the limit rod (102). A lifting rope (204) is wound around the outer wall of the lifting cylinder (203), and the upper end of the lifting rope (204) is fixedly connected to the upper end of the support frame (101), while the other end of the lifting rope (204) is fixedly installed at the lower end of the support frame (101).

3. The platform lifting and locking device for marine engineering equipment according to claim 2, characterized in that: A lifting motor (202) is fixedly installed on the inner wall of the mounting box (201) near the lifting cylinder (203). A torque box (205) is fixedly installed at the output end of the lifting motor (202). A driven gear ring (206) is fixedly sleeved on the outer wall of the lifting cylinder (203) near the torque box (205). A rotating rod (207) is fixedly installed at the output end of the torque box (205) near the driven gear ring (206). A driving gear (208) is fixedly installed at one end of the rotating rod (207) near the driven gear ring (206), and the driving gear (208) meshes with the driven gear ring (206).

4. The platform lifting and locking device for marine engineering equipment according to claim 2, characterized in that: The locking mechanism (3) includes a locking block (301), and the locking block (301) is located at the lower end of the offshore platform (1). A connecting rope (302) is fixedly installed at the upper end of the locking block (301). A winding disc (317) is rotatably installed inside the offshore platform (1) near the connecting rope (302). The connecting rope (302) is wound and installed on the outer wall of the winding disc (317). A rotating shaft (318) is fixedly installed at both ends of the winding disc (317). A winding cylinder (319) is fixedly sleeved on the inner wall of the rotating shaft (318).

5. A platform lifting and locking device for marine engineering equipment according to claim 4, characterized in that: The rotating shaft (318) installed at the end of the winding disc (317) away from the winding drum (319) is fixedly connected to a gearbox (320), and a reset motor (321) is fixedly installed at the input end of the gearbox (320).

6. The platform lifting and locking device for marine engineering equipment according to claim 5, characterized in that: A rotating rope (316) is wound and installed on the outer wall of the winding drum (319), and a rotating disk (303) is rotatably installed on the inner wall of the mounting box (201) near the rotating rope (316), and one end of the rotating rope (316) away from the winding drum (319) is wound on the outer wall of the rotating disk (303).

7. A platform lifting and locking device for marine engineering equipment according to claim 6, characterized in that: Multiple mounting blocks (304) are arrayed on the inner wall of the mounting box (201) near the rotating disk (303). Each mounting block (304) has a mounting cylinder (305) fixedly mounted on one end near the limiting rod (102), and the mounting cylinder (305) is sleeved on the outer wall of the limiting rod (102). A sliding rod (308) is slidably mounted on the inner wall of the mounting block (304), and a control rope (306) is fixedly mounted between the sliding rod (308) and the rotating disk (303).

8. A platform lifting and locking device for marine engineering equipment according to claim 7, characterized in that: The mounting cylinder (305) is equipped with a locking rope (307) inside. Multiple connecting rings (310) are provided on the outer wall of the locking rope (307). A control telescopic rod (309) is rotatably connected between the connecting rings (310) and the mounting cylinder (305). A fixing rope (312) is fixedly connected to the upper end of the locking rope (307). A fixing block (311) is fixedly connected to the end of the fixing rope (312) away from the locking rope (307). A linkage rope (314) is fixedly installed at the lower end of the locking rope (307). A linkage block (313) is fixedly installed at the end of the linkage rope (314) away from the locking rope (307).

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