A basket device for jack-up rig leg maintenance

Abstract

The application discloses a kind of for the maintenance of self-elevating drilling platform pile leg basket device, improve the technical problem such as small repair range, high use cost.The device includes main chord tube, three, between adjacent two main chord tube is connected respectively by several support tube groups, and constitute triangular truss type pile leg structure;Basket assembly, one or three, and respectively with pile leg structure is connected, basket assembly is located inside position of pile leg structure, multiple telescopic ladders are respectively arranged on each basket assembly;Lifting mechanism, multiple, and respectively set on corresponding basket assembly, lifting mechanism is used to control corresponding basket assembly lifting;Multiple telescopic ladders on each basket assembly are at least set to: three can reach corresponding main chord tube position respectively, and three can reach corresponding support tube group position respectively.The application can increase repair range, improve repair efficiency, can also save floor area, reduce use cost.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of oil drilling, and particularly relates to a hanging basket device for maintaining a pile leg of a self-elevating drilling platform. BACKGROUND

[0002] Currently, when oil and gas exploration and development operations are carried out at sea, a self-elevating drilling platform pile shoe is inserted into the seabed, a lifting device is used to lift the hull along the pile leg to a certain air gap from the sea level, the pile leg is locked after ballast, and the influence of environmental factors such as sea wind, sea wave, ocean current and the like on the hull during work is effectively avoided, and heaving, longitudinal and transverse drift movements are not generated. After the drilling operation is completed, the lifting device lowers the hull to the sea level, the buoyancy and jetting of the hull are used to pull out the pile leg, and then the self-elevating drilling platform is towed to a new well site for operation.

[0003] The pile leg of the self-elevating drilling platform in the related art is usually a triangular truss type steel structure welded by a rack, a main chord tube and a support tube, and is a basic component of the self-elevating drilling platform. The quality of the pile leg directly relates to the performance and benefit of the entire drilling platform. The pile leg in the marine environment for a long time is affected by environmental factors such as seawater, microorganisms, salt fog, sea wind, lightning and random working load, and the pile leg steel structure will form cracks and corrosion and other damages, which will cause safety hazards to the entire drilling platform. Therefore, the pile leg of the self-elevating drilling platform needs to be regularly measured in thickness and inspected for damage, and the cracks and surface wear of the welded joints need to be repaired.

[0004] The hanging basket device in the related art is usually installed on the main chord tube and controlled in lifting by a hydraulic control device. However, the hanging basket device is difficult to reach the middle position between two adjacent main chord tubes, that is, it is difficult for the construction personnel to detect and maintain the support tube, thereby affecting the maintenance range. Meanwhile, the lifting of the hanging basket device is realized by the hydraulic control device, and there are problems such as high use cost and large occupied area, which need to be improved. SUMMARY

[0005] In order to solve all or part of the above problems, the purpose of the present application is to provide a hanging basket device for maintaining a pile leg of a self-elevating drilling platform, which can increase the maintenance range, improve the maintenance efficiency, and also save the occupied area and reduce the use cost.

[0006] The present application provides a hanging basket device for maintaining a pile leg of a self-elevating drilling platform, comprising:

[0007] The main chord tubes are three in number, and the adjacent two main chord tubes are connected by a plurality of support tube groups, respectively, and the main chord tubes and the support tube groups together form a triangular truss type pile leg structure;

[0008] The basket assembly is provided with one or three, and is connected with the leg structure, the basket assembly is located inside the leg structure, a plurality of telescopic ladders are arranged on each basket assembly, and the telescopic ladders are arranged along the circumference of the basket assembly.

[0009] The lifting mechanism is provided with a plurality of lifting mechanisms arranged on the corresponding basket assemblies, and the lifting mechanism is used for controlling the lifting of the corresponding basket assemblies.

[0010] The telescopic ladders on each basket assembly are arranged in at least three positions, which can reach the corresponding main chord pipe position and the corresponding support pipe group position.

[0011] Optionally, the lifting mechanism comprises:

[0012] The lifting machine is provided with a plurality of lifting machines arranged on the corresponding basket assemblies.

[0013] The support part is provided with a plurality of support parts connected to the top of the leg structure.

[0014] The traction rope is provided with a plurality of traction ropes, the top end of the traction rope is connected with the corresponding support part, and the bottom end of the traction rope is connected with the corresponding lifting machine.

[0015] The lifting machine is used for winding and unwinding the corresponding traction rope, so as to realize the lifting movement of the basket assembly.

[0016] Optionally, the lifting mechanism further comprises:

[0017] The safety guide device is provided with a plurality of safety guide devices arranged on the corresponding basket assemblies.

[0018] The plurality of traction ropes are connected with the corresponding safety guide devices, and the safety guide devices can compensate the working angle of the traction rope, so that the traction rope remains vertical.

[0019] Optionally, the lifting mechanism further comprises:

[0020] The safety lock is provided with a plurality of safety locks arranged on the corresponding basket assemblies.

[0021] The safety rope is provided with a plurality of safety ropes, the safety rope passes through the corresponding safety lock, the top end of the safety rope is connected with the corresponding support part, and the bottom end of the safety rope is connected with the corresponding basket assembly.

[0022] When the basket assembly is lifted, the safety lock moves synchronously with the corresponding basket assembly. If the traction rope is detached and causes the basket assembly to tilt more than 8°, the safety lock can lock the basket assembly on the corresponding safety rope, thereby providing tilt protection for the basket assembly.

[0023] Optionally, the bottom of the safety rope is provided with a counterweight to keep the bottom end of the safety rope vertical.

[0024] Optionally, the support part includes a lifting belt fixed to the top of the pile leg structure, and the traction rope and the safety rope are connected to the corresponding lifting belt through shackles.

[0025] Optionally, the support part includes a support beam, and the traction rope and the safety rope are connected to the corresponding support beam through shackles, and the support beam and the adjacent two support tube groups form a triangular structure.

[0026] Optionally, the hoist includes:

[0027] A variable frequency motor is arranged on the basket assembly.

[0028] A transmission is arranged on the basket assembly, and the input shaft of the transmission is connected to the output shaft of the variable frequency motor.

[0029] A rope wheel is fixed to the output shaft of the transmission, and the traction rope is connected to the corresponding rope wheel, so that the rope wheel can wind and unwind the traction rope.

[0030] Optionally, the hoist further includes:

[0031] A cable storage winch is arranged on the basket assembly, and the cable storage winch can work with the corresponding rope wheel to wind and unwind the traction rope.

[0032] Optionally, a locking mechanism is arranged on the telescopic ladder, and when the telescopic ladder reaches the position of the main chord tube or the support tube group, the locking mechanism can fix the telescopic ladder to the main chord tube or the support tube group.

[0033] Optionally, the end of the telescopic ladder away from the basket assembly is closed to protect the safety of the operator.

[0034] Optionally, an electric control system is arranged on the basket assembly, the lifting mechanism is connected to the electric control system, and the electric control system is used to control the opening and closing of the lifting mechanism, thereby realizing the electric control lifting of the basket device.

[0035] From the above technical solutions, the basket device for maintaining the pile leg of the self-elevating drilling platform provided by the application has the following advantages:

[0036] The device sets the basket device inside the pile leg structure, and the main chord pipe and the support pipe group position can be reached through the telescopic ladder, so that the maintenance range is increased and the maintenance efficiency is improved. Meanwhile, the device uses the hoist to control the lifting of the basket assembly, and has simple design and manufacturing, low cost, small maintenance workload and low cost, and can also save the floor area.

[0037] Other features and advantages of the application will be described in the subsequent description. BRIEF DESCRIPTION OF DRAWINGS

[0038] The accompanying drawings are used to provide a further understanding of the technical solutions of the application, and constitute a part of the specification, and are used together with the embodiments of the application to explain the technical solutions of the application, and do not constitute a limitation on the technical solutions of the application.

[0039] Figure 1 It is a schematic view of the overall structure of embodiment 1 of the application;

[0040] Figure 2 It is a top view of embodiment 1 of the application;

[0041] Figure 3 It is a schematic view of the structure of the basket assembly in embodiment 1 of the application;

[0042] Figure 4 It is Figure 1 It is an enlarged schematic view of area A in the middle;

[0043] Figure 5 It is a schematic view of the overall structure of embodiment 2 of the application;

[0044] Figure 6 It is a top view of embodiment 2 of the application;

[0045] Figure 7 It is a schematic view of the structure of the basket assembly in embodiment 2 of the application.

[0046] Explanation of reference signs:

[0047] 1, main chord pipe; 2, support pipe group; 3, basket assembly; 4, telescopic ladder; 5, lifting mechanism; 51, hoist; 511, frequency conversion motor; 512, speed changer; 513, rope wheel; 514, cable storage winch; 52, support part; 521, hoisting belt; 522, shackle; 523, support cross beam; 53, traction rope; 54, safety guide device; 55, safety lock; 56, safety rope; 57, counterweight; 6, locking mechanism; 7, electric control system. DETAILED DESCRIPTION

[0048] In order to make the objects, technical solutions and advantages of the present application clearer, below the embodiments of the present application will be described in detail with reference to the drawings. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other arbitrarily without conflict.

[0049] Embodiment 1

[0050] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 Embodiment 1 of the present application is disclosed, which is a basket device for maintaining the pile leg of a self-elevating drilling platform, comprising three vertically arranged main chord pipes 1, and a plurality of support pipe groups 2 are arranged between every two adjacent main chord pipes 1 to connect the main chord pipes 1 and the support pipe groups 2, so that the main chord pipes 1 and the support pipe groups 2 jointly form a triangular truss type pile leg structure.

[0051] In one embodiment, as shown in Figure 2 , Figure 3 , Figure 4 , a basket assembly 3 is arranged inside the pile leg structure, a plurality of telescopic ladders 4 are arranged on the basket assembly 3, and the plurality of telescopic ladders 4 are arranged along the circumference of the basket assembly 3. A lifting mechanism 5 is arranged on each basket assembly 3, and the lifting mechanism 5 is used to control the corresponding basket assembly 3 to ascend and descend.

[0052] In the present embodiment, six telescopic ladders 4 are arranged, and the six telescopic ladders 4 are arranged at equal intervals, wherein three of them can respectively reach the positions of the corresponding main chord pipes 1, and the other three can respectively reach the middle positions of the corresponding support pipe groups 2.

[0053] The basket device for maintaining the pile leg of a self-elevating drilling platform in the present embodiment can reach the positions of the main chord pipes 1 and the support pipe groups 2 through the telescopic ladders 4, thereby increasing the range of maintenance, so that the operator can quickly maintain the pile leg structure, thereby improving the maintenance efficiency.

[0054] In one embodiment, as shown in Figure 2 , Figure 3 , Figure 4 , the lifting mechanism 5 comprises a plurality of hoists 51, a support part 52 and a traction rope 53, the hoist 51 is fixed on the corresponding basket assembly 3, the support part 52 is fixed on the top of the pile leg structure, the top end of the traction rope 53 is connected with the corresponding support part 52, and the bottom end is connected with the corresponding hoist 51, and the hoist 51 is used to wind and unwind the corresponding traction rope 53, thereby realizing the ascending and descending movement of the basket assembly 3.

[0055] In the embodiment, the hoist 51, the support 52 and the traction rope 53 are provided with three respectively, and the bottom ends of the three traction ropes 53 are distributed equidistantly along the circumference of the basket assembly 3, that is, the gravity center of the basket assembly 3 is kept stable, so that the basket assembly 3 can be lifted stably.

[0056] In one embodiment, as shown in Figure 2 , Figure 3 , Figure 4 shown, the lifting mechanism 5 further comprises three safety guide devices 54 fixed on the basket assembly 3 respectively, and the three traction ropes 53 are connected with the corresponding safety guide devices 54 respectively, and the safety guide devices 54 can compensate the working angle of the traction rope 53, so that the traction rope 53 remains vertical.

[0057] In one embodiment, as shown in Figure 2 , Figure 3 , Figure 4 shown, the lifting mechanism 5 further comprises three safety locks 55 and safety ropes 56, the three safety locks 55 are fixed on the basket assembly 3 respectively, and the three safety ropes 56 pass through the corresponding safety locks 55 respectively, and the top end of the safety rope 56 is connected with the corresponding support 52, and the bottom end is connected with the corresponding basket assembly 3.

[0058] In the embodiment, the safety lock 55 is mainly composed of rope clamp, cover plate, torsional spring, roller and other components. When the basket assembly 3 is lifted, the safety lock 55 moves synchronously with the corresponding basket assembly 3. If the traction rope 53 is off and the basket assembly 3 moves obliquely more than 8°, the safety lock 55 can lock the basket assembly 3 on the corresponding safety rope 56, so as to play a role in the oblique safety protection of the basket assembly 3.

[0059] In one embodiment, as shown in Figure 2 , Figure 3 , Figure 4 shown, the bottom of the safety rope 56 is connected with a counterweight 57, and the counterweight 57 mainly plays a role in keeping the safety rope 56 vertical, that is, keeping the bottom of the safety rope 56 vertical, so that the safety rope 56 will not be bent in use, and ensures that the basket assembly 3 will not be stuck and the normal work of the safety lock 55.

[0060] In one embodiment, as shown in Figure 2 , Figure 3 , Figure 4 shown, the support 52 comprises a lifting belt 521, and the lifting belt 521 is fixed on the top of the pile leg structure, and the traction rope 53 and the safety rope 56 are connected with the corresponding lifting belt 521 through shackles 522 respectively, which is the bearing mechanism of the whole basket device.

[0061] In one embodiment, as shown in Figure 2 , Figure 3 , Figure 4As shown, the hoist 51 comprises a variable frequency motor 511, a transmission 512 and a rope wheel 513, the variable frequency motor 511 is fixed on the basket assembly 3, the transmission 512 is fixed on the basket assembly 3, and the input shaft of the transmission 512 is connected with the output shaft of the variable frequency motor 511. The rope wheel 513 is fixedly sleeved on the output shaft of the transmission 512, and the traction rope 53 is connected with the corresponding rope wheel 513, so that the rope wheel 513 can wind and unwind the traction rope 53.

[0062] In the embodiment, the variable frequency motor 511 has an electromagnetic brake device, which has a manual release function, and can manually release the hoist 51 in an emergency to drive the basket assembly 3 to slide down to the required position.

[0063] In one embodiment, as shown in Figure 2 , Figure 3 , Figure 4 As shown, the hoist 51 further comprises a cable storage winch 514 fixed on the basket assembly 3, and the cable storage winch 514 can work cooperatively with the hoist 51 to realize winding and unwinding of the traction rope 53. The cable storage winch 514 has a constant tension and overspeed brake function, which can prevent the occurrence of a tangled rope condition by applying a certain tension to the traction rope 53 during the operation of the hoist 51. At the same time, the cable storage winch 514 can detect the speed of the traction rope 53 in real time, and when a stall condition occurs, the cable storage winch 514 implements braking to ensure safety.

[0064] In one embodiment, as shown in Figure 2 , Figure 3 , Figure 4 As shown, the telescopic ladder 4 is provided with a locking mechanism 6, which can fix the telescopic ladder 4 with the main string tube 1 or the support tube group 2 when the telescopic ladder 4 reaches the position of the main string tube 1 or the support tube group 2. In the embodiment, the locking mechanism 6 adopts an electromagnet structure, which can realize magnetic attraction fixation of the telescopic ladder 4 with the main string tube 1 or the support tube group 2 when the telescopic ladder 4 reaches the position of the main string tube 1 or the support tube group 2, so as to realize the connection of the two.

[0065] In one embodiment, as shown in Figure 2 , Figure 3 , Figure 4 As shown, the end of the telescopic ladder 4 away from the basket assembly 3 is closed to protect the safety of the operator, reduce the risk of the operator falling, and thus protect the personal safety of the operator.

[0066] In one embodiment, as shown in Figure 2 , Figure 3 , Figure 4 As shown, the basket assembly 3 is provided with an electric control system 7, the lifting mechanism 5 is connected with the electric control system 7, and the electric control system 7 is used to control the opening and closing of the lifting mechanism 5, so as to realize electric control lifting of the basket device.

[0067] In the embodiment, the electric control system 7 comprises a controller connected with the lifting mechanism 5 and a remote controller wirelessly connected with the controller to send control signals to the controller. Meanwhile, the electric control system 7 has an emergency stop function to stop the action of the lifting machine 51 in an emergency.

[0068] In one embodiment, as shown in Figure 2 、 Figure 3 、 Figure 4 The basket assembly 3 is composed of a load-bearing plate and a plurality of guardrails to carry personnel, maintenance tools and materials. Meanwhile, the basket assembly 3 is made of light aluminum alloy to reduce the overall weight of the basket assembly 3.

[0069] From the above process, the basket device in the embodiment can carry personnel, maintenance tools and materials, conveniently implement full-range detection and maintenance of platform pile legs, and be disassembled and used by the platform hoisting equipment to meet different platform installation requirements. The basket device can solve the problems of the existing pile leg maintenance device, such as complex design and manufacturing, large maintenance workload, high cost, large installation workload, difficult transportation and storage, small maintenance range, etc., and can improve the maintenance efficiency, shorten the construction period and reduce the construction cost.

[0070] Meanwhile, the electric control system 7 controls the electric lifting machine 51, which is simple in design and manufacturing, low in cost, and only needs one set of driving system, small in maintenance workload and low in cost. Meanwhile, the basket device has a compact structure, can be installed from one side of the pile leg, does not need to be assisted by a land auxiliary crane, has small installation workload, small occupied area and is easy to store and transport.

[0071] Embodiment 2

[0072] As shown in Figure 2 、 Figure 3 、 Figure 4 The embodiment 2 of the present application is different from the embodiment 1 in that three basket assemblies 3 are arranged inside the pile leg structure, and three telescopic ladders 4 are arranged on each basket assembly 3. The three basket assemblies 3 are distributed at three corner positions of the pile leg structure, and the three telescopic ladders 4 on each basket assembly 3, one of which can reach the position of the corresponding main chord pipe 1, and the other two can respectively reach the middle positions of the corresponding support pipe groups 2.

[0073] In one embodiment, as shown in Figure 5 、 Figure 6 、 Figure 7 Figure 5 Figure 6 Figure 7As shown, two of each of the hoist 51, the traction rope 53 and the safety rope 56 are provided, and the support part 52 comprises a support cross beam 523, the traction rope 53 and the safety rope 56 are connected with the corresponding support cross beam 523 through the shackles 522, and the support cross beam 523 and the adjacent two support pipe groups 2 form a triangular structure.

[0074] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the present application should be the usual meanings understood by the skilled in the art to which the present application belongs.

[0075] In addition, the terms "first", "second", and the like are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified.

[0076] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the description of the present application. Especially, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A basket device for maintaining the legs of a jack-up drilling platform, characterized in that, include: There are three main chord pipes (1). Adjacent main chord pipes (1) are connected by several support pipe groups (2), and the main chord pipes (1) and the support pipe groups (2) together form a triangular truss-type pile leg structure. The suspended platform assembly (3) is provided in one or three quantities and is connected to the pile leg structure respectively. The suspended platform assembly (3) is located inside the pile leg structure. Each suspended platform assembly (3) is provided with multiple telescopic ladders (4) and the multiple telescopic ladders (4) are arranged around the circumference of the suspended platform assembly (3). Multiple lifting mechanisms (5) are provided on the corresponding suspended basket assembly (3), and the lifting mechanisms (5) are used to control the lifting of the corresponding suspended basket assembly (3). Among them, at least three of the telescopic ladders (4) on each of the suspended basket assemblies (3) are configured such that three can reach the corresponding position of the main chord tube (1) and three can reach the corresponding position of the support tube group (2).

2. The basket device for maintenance of legs of a jack-up drilling platform according to claim 1, characterized in that, The lifting mechanism (5) includes: Multiple hoists (51) are provided and are respectively installed on the corresponding suspended basket assembly (3); Support parts (52) are multiple and are connected to the top of the pile leg structure respectively; Multiple traction ropes (53) are provided, with the top end of each traction rope (53) connected to the corresponding support part (52) and the bottom end connected to the corresponding hoist (51). The hoist (51) is used to retract and extend the corresponding traction rope (53), thereby realizing the lifting and lowering movement of the basket assembly (3).

3. The basket device for maintenance of legs of a jack-up drilling platform according to claim 2, characterized in that, The lifting mechanism (5) also includes: Safety guidance devices (54) are provided in multiples and are respectively installed on the corresponding suspended basket assembly (3); The plurality of the traction ropes (53) are respectively connected to the corresponding safety guide devices (54), and the safety guide devices (54) are capable of compensating for the working angle of the traction ropes (53) so that the traction ropes (53) remain vertical.

4. The basket device for maintenance of legs of a jack-up drilling platform according to claim 3, characterized in that, The lifting mechanism (5) also includes: Safety locks (55) are multiple and are respectively installed on the corresponding suspended basket assembly (3); Safety ropes (56), in multiple quantities, each of the multiple safety ropes (56) passes through a corresponding safety lock (55), the top end of each safety rope (56) is connected to a corresponding support (52), and the bottom end is connected to a corresponding suspended basket assembly (3); When the suspended basket assembly (3) is raised or lowered, the safety lock (55) moves synchronously with the corresponding suspended basket assembly (3). If the traction rope (53) falls off and causes the suspended basket assembly (3) to tilt by more than 8°, the safety lock (55) can lock the suspended basket assembly (3) onto the corresponding safety rope (56) to provide safety protection against tilting of the suspended basket assembly (3).

5. The basket device for maintenance of legs of a jack-up drilling platform according to claim 4, characterized in that, The bottom of the safety rope (56) is provided with a counterweight (57) to keep the bottom end of the safety rope (56) vertical.

6. The basket device for maintenance of legs of a jack-up drilling platform according to claim 4, characterized in that, The support (52) includes a lifting belt (521) which is fixed to the top of the pile leg structure, and the traction rope (53) and safety rope (56) are respectively connected to the corresponding lifting belt (521) by shackles (522).

7. The basket device for maintenance of legs of a jack-up drilling platform according to claim 4, characterized in that, The support part (52) includes a support beam (523), the traction rope (53) and the safety rope (56) are respectively connected to the corresponding support beam (523) through shackles (522), and the support beam (523) and the two adjacent support tube groups (2) form a triangular structure.

8. The basket device for maintenance of legs of a jack-up drilling platform according to claim 2, characterized in that, The hoist (51) includes: A variable frequency motor (511) is mounted on the suspended platform assembly (3); A transmission (512) is mounted on the suspended basket assembly (3), and the input shaft of the transmission (512) is connected to the output shaft of the variable frequency motor (511); A pulley (513) is fixed to the output shaft of the transmission (512), and the traction rope (53) is connected to the corresponding pulley (513) so that the pulley (513) can retract and extend the traction rope (53).

9. The basket device for maintenance of legs of a jack-up drilling platform according to claim 8, characterized in that, The hoist (51) also includes: A cable storage winch (514) is installed on the basket assembly (3), and the cable storage winch (514) can work in conjunction with the corresponding sheave (513) to realize the winding and unwinding of the traction rope (53).

10. The basket device for maintenance of legs of a jack-up drilling platform according to claim 1, characterized in that, The telescopic escalator (4) is equipped with a locking mechanism (6). When the telescopic escalator (4) reaches the position of the main chord tube (1) or the support tube group (2), the locking mechanism (6) can fix the telescopic escalator (4) to the main chord tube (1) or the support tube group (2).

11. The basket device for maintenance of legs of a jack-up drilling platform according to claim 1, characterized in that, The end of the telescopic escalator (4) away from the suspended basket assembly (3) is closed to protect the safety of the operator.

12. The basket device for leg maintenance of a jack-up drilling platform according to claim 1, characterized in that, The suspended basket assembly (3) is equipped with an electrical control system (7), the lifting mechanism (5) is connected to the electrical control system (7), and the electrical control system (7) is used to control the opening and closing of the lifting mechanism (5), thereby realizing the electrical control lifting of the suspended basket device.

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