Hoisting system and hoisting method for underwater blind hoisting

Abstract

The invention discloses a hoisting system and a hoisting method for underwater blind hoisting, and particularly relates to the technical field of underwater engineering, the hoisting system comprises a hoisting head, a hoisting tool catcher and a guide assembly; the guiding assembly comprises a connecting piece used for guiding the lifting appliance catcher and the lifting head to be in butt joint and locked, and a traction piece used for relieving butt joint and locking of the lifting appliance catcher and the lifting head. The lifting appliance catcher is movably connected to the outer surface of the connecting piece in a sleeving manner and slides along the connecting piece, and a locking mechanism for catching the lifting head is arranged on the lifting appliance catcher; and one end of the connecting piece is fixedly connected with the hoisting head. Through the combination of the lifting head and the lifting appliance catcher and the utilization of the shape of the conical lifting appliance head, the catching accuracy and stability in the underwater environment are improved, the lifting function can be completed without direct underwater contact, the lifting efficiency is improved, and the safety risk in the operation process is reduced; and the application range and the flexibility of the hoisting operation are improved.

Description

Technical Field

[0001] The present invention relates to the field of underwater engineering technology, and more specifically, to a lifting system and a lifting method for underwater blind lifting. Background Art

[0002] In the field of sewage and other underwater engineering, heavy-duty submersible pumps play a vital role. They are often used in various scenarios such as drainage, irrigation, and underwater operations. In the underwater lifting operation of heavy-duty submersible pumps, the existing technology mainly relies on traditional lifting methods and means, which have obvious limitations and shortcomings: First, the traditional method often requires the water in the operation area to be drained first to expose the submersible pump to be lifted, which is not only time-consuming and labor-intensive, but also may cause unnecessary damage to the environment; secondly, even if solutions such as reserved steel chains are adopted, complex operations such as fixing, hooking, and moving hanging points are required on the water surface. These operations are not only inefficient, but also pose high safety risks; it can be seen that the existing underwater lifting technology has significant difficulties in achieving precise positioning; and due to the complex underwater environment, insufficient light, and limited vision, it is difficult for operators to accurately judge the position and status of the submersible pump, thereby increasing the difficulty of operation and the risk of failure; the existing lifting schemes are also insufficient in terms of stability, and are prone to shaking or falling off during the lifting process, further exacerbating safety risks.

[0003] In order to solve the problem of difficult positioning and unstable lifting due to limited vision caused by complex environment when lifting heavy submersible pumps underwater, a lifting system and lifting method for underwater blind lifting are proposed as a further improvement. Summary of the invention

[0004] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides a lifting system and a lifting method for underwater blind lifting to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: A lifting system for underwater blind lifting, comprising: a lifting head fixedly mounted on the top of the lifting load, a lifting device catcher and a guide assembly detachably connected to the lifting device hook;

[0006] The guide assembly includes: a connecting member for guiding the sling catcher to dock and lock with the lifting head and a traction member for releasing the sling catcher from docking and locking with the lifting head;

[0007] The sling catcher is movably sleeved on the connecting piece and slides along the connecting piece, and the sling catcher is provided with a locking mechanism for capturing the sling head;

[0008] One end of the connecting piece is fixedly connected to the lifting head; one end of the traction piece is fixedly connected to the locking mechanism.

[0009] Further, the locking mechanism comprises: a first pull rod, a second pull rod, a locking load-bearing block, a locking spring and a locking load-bearing shaft;

[0010] The two locking load-bearing shafts are rotatably connected to the two sides of the sling catcher respectively, and the two locking load-bearing blocks used to capture the lifting head are fixedly connected to the middle parts of the two locking load-bearing shafts respectively. One end of the first pull rod and one end of the second pull rod are fixedly installed on the two ends of the locking load-bearing shaft respectively, and the two second pull rods are fixedly connected by a locking spring, and the ends of the two first pull rods away from the locking load-bearing shaft are fixedly connected to the traction member.

[0011] Furthermore, the hoisting head comprises: a conical hoisting head and a circular support column fixedly mounted on the top of the hoisted load.

[0012] The smaller end of the conical sling head is set as a connecting end, the bottom surface of the conical sling head is set as a locking surface, the connecting end is fixedly connected to one end of the connecting piece, the diameter of the locking surface is larger than the diameter of the circular support column, and the top of the circular support column is fixedly connected to the middle of the locking surface;

[0013] One end of the two locking load-bearing blocks that is close to each other clamps the circular support column and contacts the locking surface.

[0014] Further, a capture cavity extending to the bottom surface is opened inside the sling catcher, and the capture cavity comprises: a conical cavity located inside the sling catcher and a cylindrical cavity located between the bottom surface of the sling catcher and the conical cavity;

[0015] The shape of the conical cavity is the same as that of the conical hanger head, the maximum diameter of the conical cavity is not greater than the diameter of the cylindrical cavity, and the diameter of the locking surface is not greater than the diameter of the cylindrical cavity;

[0016] A limit block is fixedly installed on one side of the sling catcher close to the first pull rod, and the traction member passes through the inside of the limit block;

[0017] A through hole communicating with the conical cavity is provided on the top of the spreader catcher, and one end of the connecting piece passing through the through hole is fixedly connected to the conical spreader head;

[0018] Both sides of the top of the sling catcher are fixedly mounted with fixing seats, and the fixing seats are hung on the hook of the lifting equipment through an auxiliary device.

[0019] Further, the spreader catcher comprises: a positioning barrel, a load-bearing side plate and a housing auxiliary side plate;

[0020] Two opposite and parallel load-bearing side plates and two opposite and parallel auxiliary side plates of the shell are respectively fixedly installed around the positioning barrel, and the tops of the two load-bearing side plates are fixedly installed with fixing seats, and the fixing seats are hung on the hook of the lifting equipment through auxiliary devices;

[0021] The inner diameter of the positioning barrel is not less than the diameter of the locking surface.

[0022] Furthermore, through grooves for locking the rotation of the load-bearing block are provided on both sides of the positioning barrel.

[0023] Further, the auxiliary device includes: a lifting ring and a lifting belt;

[0024] The lifting ring passes through the top of the fixing seat, and the lifting ring is rotatably connected to the fixing seat. The two ends of the lifting belt are movably sleeved on the tops of the two lifting rings respectively, and the lifting belt is hung on the hook of the lifting equipment.

[0025] A lifting method for underwater blind lifting, comprising the lifting system, specifically comprising the following steps:

[0026] Step 1: Install the lifting head and extend the connector installed on the lifting head to the ground anchor point;

[0027] Step 2: Start the lifting equipment, insert the lifting device catcher into the connecting piece, and after the lifting hook of the lifting equipment hooks the lifting device catcher, move the lifting hook and the lifting device catcher toward the lifting head along the path constructed by the connecting piece;

[0028] Step 3: The spreader catcher catches the lifting head;

[0029] Step 4: Move the sling catcher and the sling head (1) caught by it to a designated position;

[0030] Step 5: Determine whether the position where the spreader catcher is unlocked and separated from the lifting head is on the water surface or underwater:

[0031] If it is on the water surface, pull the traction piece to release the docking and locking between the spreader catcher and the lifting head, and use the lifting equipment to lift the spreader catcher to separate the two;

[0032] If it is underwater, not only the traction piece and the lifting head are pulled to connect and lock, and the lifting equipment is used to lift the lifting device catcher to separate the two; the lifting device catcher is also separated from the connecting piece and waits for the next lifting operation.

[0033] Furthermore, in the step three, when the lifting head enters the interior of the sling catcher, that is, the conical cavity or positioning barrel of the capture cavity, it will overcome the locking spring and push open the two locking load-bearing blocks. Subsequently, the two locking load-bearing blocks will be engaged with the locking surface when they are reset to ensure precise docking.

[0034] Furthermore, in the steps 2, 4 and 5, if the sling catcher moves, the traction member needs to be retracted to avoid malfunction;

[0035] If the sling catcher and the lifting head move, the connecting parts and traction parts need to be pulled back and stored on the ground to ensure the stability and safety of the lifting process.

[0036] Technical effects and advantages of the present invention:

[0037] 1. Compared with the traditional heavy-duty submersible pump lifting system and lifting method that requires direct operation by divers or underwater robots, the combination of the lifting head and the lifting catcher and the conical shape of the lifting head can improve the alignment efficiency of the catcher, effectively improve the capture accuracy and stability in the underwater environment, and realize the function of lifting without direct underwater contact, which greatly improves the lifting efficiency and reduces the safety risks during operation; the design of the conical lifting head and the lifting catcher enables it to adapt to various complex underwater environments, including extreme conditions such as low visibility and high water flow. The conical structure has no angle requirement for the falling direction of the lifting catcher, thereby improving the scope of application and flexibility of the lifting operation.

[0038] 2. Compared with the prior art, a guide assembly is used to guide the catcher to slide smoothly into and lock on the lifting head, thereby simplifying the operation process, improving the stability and safety of lifting, and avoiding lifting failures or accidents caused by improper operation or environmental factors; after the lifting work is completed, the locking mechanism on the sling catcher is used to achieve the function of quick release between the sling catcher and the lifting head; by reducing potential risks and equipment damage during the lifting process, the present invention helps to improve the utilization rate of heavy-duty submersible pumps and extend their service life, and provides more reliable and efficient equipment support for the production and operation of related industries.

[0039] 3. Compared with the prior art, the lifting system for underwater blind lifting of the present invention simplifies the operating process, reduces the skill requirements for operators, and does not require divers or drainage and pool cleaning operations, thereby reducing equipment damage caused by improper operation and corresponding maintenance costs; the lifting method of the present invention stands out among similar technologies for its innovation and uniqueness, and provides strong support for technological progress and industrial upgrading in the industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0041] Figure 2 It is a side view of the embodiment 1 of the hanger catch of the present invention.

[0042] Figure 3 It is a front view of the embodiment 1 of the spreader catcher of the present invention.

[0043] Figure 4 It is a rear view of the embodiment 1 of the spreader catcher of the present invention.

[0044] Figure 5 It is an exploded schematic diagram of the locking mechanism of the present invention.

[0045] Figure 6 It is a schematic diagram of the lifting head of the present invention.

[0046] Figure 7 It is a schematic diagram of the explosion structure of Example 2 of the spreader catcher of the present invention.

[0047] The accompanying drawings are marked as follows:

[0048] 1. Lifting head;

[0049] 11. conical spreader head; 111. connection end; 112. locking surface;

[0050] 12. Round support column;

[0051] 2. Spreader catcher;

[0052] 21. Capture cavity; 211. Conical cavity; 212. Cylindrical cavity;

[0053] 22. Limit block;

[0054] 23. Through hole;

[0055] 24. Fixed seat

[0056] 25. Positioning barrel; 251. Through slot;

[0057] 26. Load-bearing side panels;

[0058] 27. Auxiliary side panels of the shell;

[0059] 3. Guide assembly; 31. Connecting piece; 32. Traction piece;

[0060] 4. Locking mechanism;

[0061] 41. first pull rod; 42. second pull rod; 43. locking load-bearing block; 44. locking spring;

[0062] 45. Lock the load-bearing shaft;

[0063] 5. Auxiliary device; 51. Lifting ring; 52. Lifting strap. DETAILED DESCRIPTION

[0064] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0065] As attached Figure 1-7 A lifting system for underwater blind lifting is shown, comprising: a lifting head 1 fixedly mounted on the top of the lifting load, a lifting device catcher 2 detachably connected to the lifting device hook, and a guide assembly 3;

[0066] The present invention is directed to a hoisting load which may be a submersible pump;

[0067] Among them, the sling catcher 2 adopts a carbon steel shell, which is positioned by bolts and fixed by welding, and has a load-bearing function;

[0068] The guide assembly 3 includes: a connecting member 31 for guiding the sling catcher 2 to dock and lock with the lifting head 1 and a traction member 32 for releasing the sling catcher 2 from docking and locking with the lifting head 1;

[0069] The sling catcher 2 is movably sleeved on the outer surface of the connecting member 31 and slides along the connecting member 31. The sling catcher 2 is provided with a locking mechanism 4 for capturing the lifting head 1.

[0070] One end of the connecting member 31 is fixedly connected to the lifting head 1 , and the other end of the connecting member 31 extends to the ground so that the connecting member 31 has a fixing point.

[0071] The lifting head 1 comprises: a conical lifting head 11 and a circular support column 12 fixedly installed on the top of the lifting load.

[0072] The smaller end of the conical spreader head 11 is set as a connecting end 111, and the bottom surface of the conical spreader head 11 is set as a locking surface 112. The connecting end 111 is fixedly connected to one end of the connecting member 31. The diameter of the locking surface 112 is larger than the diameter of the circular support column 12. The top of the circular support column 12 is fixedly connected to the middle of the locking surface 112.

[0073] The two locking load-bearing blocks 43 have their ends close to each other clamping the circular support column 12 and contacting the locking surface 112 so that the locking load-bearing blocks 43 can lock the sling catcher 2;

[0074] Among them, the lifting head 1 is one of the core components of the device of the present invention. Since the end of the conical lifting head 11 is a cone, the stability and guidance of the cone are utilized, which not only facilitates the capture of the lifting catcher 2, but also ensures the stable connection between the lifting head 1 and the lifting catcher 2 during the lifting process, and is not limited by the horizontal angle; the lifting head 1 is made of high-strength 45# steel through processing and tempering, and the surface of the finished product after processing is treated with a passivation process, which has excellent corrosion resistance and wear resistance, and can adapt to harsh underwater environments;

[0075] Among them, the conical sling head 11 at the end of the lifting head 1 can be of other shapes (such as cylindrical, spherical or specially designed polyhedron) in addition to the conical shape. As long as it can effectively cooperate with the sling catcher 2 and realize the locking function, it can be adopted.

[0076] Among them, the sling catcher 2 is another key component of the present invention, which is hung on the hook of the lifting equipment and is associated with the lifting head 1 through the guide component 3; the sling catcher 2 can be made of ordinary Q250 steel and 45# steel materials, and has the characteristics of low cost and high strength; the sling catcher 2 can also have a variety of designs, such as using a spring-loaded mechanical clamping mechanism, a magnetic catcher or a flexible rope with a hook, etc.; these alternative designs can be selected according to specific application scenarios and lifting requirements.

[0077] Among them, the guide assembly 3 is one of the innovative points of the present invention. The connector 31 installed on the lifting head 1 can be made of corrosion-resistant stainless steel thin wire rope, which can guide the sling catcher 2 to move smoothly along the predetermined path until the sling catcher 2 is docked and locked with the lifting head 1; and the other end of the connector 31 extends to the ground. The guide assembly 3 can be further optimized, such as using stronger and more wear-resistant materials, or designing a more complex guide rope retracting and releasing structure on the sling catcher 2 to reduce the manual auxiliary operation work.

[0078] The traction member 32 is a nylon rope for pulling the first pull rod 41 in the locking mechanism 4 as a release operation, so as to facilitate the unlocking and separation action after the sling catcher 2 captures the lifting head 1.

[0079] The locking mechanism 4 may consider introducing wireless remote control technology or automatic locking system, which can further improve the flexibility and safety of the lifting operation. For example, the locking or releasing of the catcher may be triggered by a remote control signal, or automatic locking may be achieved by using sensors and algorithms;

[0080] Among them, it is also possible to consider integrating sensors and monitoring systems on the lifting head 1 and the lifting device catcher 2, which can monitor various parameters in the lifting process (such as tension, angle, speed, etc.) in real time, so as to provide more accurate operation guidance and safety warnings.

[0081] In a preferred embodiment, as shown in the attached Figure 2 , Attachment Figure 3 , Attachment Figure 4 , Attachment Figure 5 and attached Figure 7 As shown, the locking mechanism 4 includes: a first pull rod 41, a second pull rod 42, a locking load-bearing block 43, a locking spring 44 and a locking load-bearing shaft 45;

[0082] The two locking load-bearing shafts 45 are respectively rotatably connected to the two sides of the sling catcher 2, and the two locking load-bearing blocks 43 used to capture the lifting head 1 are respectively fixedly connected to the middle parts of the two locking load-bearing shafts 45. One end of the first pull rod 41 and one end of the second pull rod 42 are respectively fixedly installed on the two ends of the locking load-bearing shafts 45, and the two second pull rods 42 are fixedly connected by a locking spring 44. The ends of the two first pull rods 41 away from the locking load-bearing shafts 45 are fixedly connected to the traction member 32.

[0083] Among them, the locking load-bearing block 43 is a solid metal block in the sling catcher 2, which is used to lock the sling head 1 and bear the entire lifting load;

[0084] The first pull rod 41 and the second pull rod 42 are two sets of pull rod structures installed on the catcher, and the locking and releasing actions are mainly achieved by the locking spring 44 and the locking bearing shaft 45 on the locking bearing block 43;

[0085] Wherein, the locking spring 44 is a locking reverse tension spring;

[0086] Among them, the locking mechanism 4 is equivalent to a release lever, and the locking load-bearing shaft 45 is a fulcrum. If the traction member 32 is pulled, the first pull rod 41 and the second pull rod 42 are respectively the power arm and the resistance arm; if the traction member 32 is released, the first pull rod 41 and the second pull rod 42 are respectively the resistance arm and the power arm; thereby achieving the rapid separation of the sling catcher 2 and the lifting head 1.

[0087] Spreader catcher 2 Embodiment 1: As shown in the attached Figure 2 , Attachment Figure 3 and attached Figure 4 As shown, a capture cavity 21 extending to the bottom surface is provided inside the sling catcher 2, and the capture cavity 21 includes: a conical cavity 211 located inside the sling catcher 2 and a cylindrical cavity 212 located between the bottom surface of the sling catcher 2 and the conical cavity 211;

[0088] The shape of the conical cavity 211 is the same as that of the conical spreader head 11 , the maximum diameter of the conical cavity 211 is not greater than the diameter of the cylindrical cavity 212 , and the diameter of the locking surface 112 is not greater than the diameter of the cylindrical cavity 212 ;

[0089] The surface of the conical spreader head 11 of the lifting head 1 is a locking surface that matches the conical cavity 211 inside the spreader catcher 2. Due to its structural and force characteristics, it can ensure that the spreader catcher 2 and the lifting head 1 are accurately docked and firmly locked during the lifting process;

[0090] A limit block 22 is fixedly mounted on one side of the sling catcher 2 close to the first pull rod 41 , and the traction member 32 passes through the inside of the limit block 22 .

[0091] Among them, since one end of the traction member 32 is connected to the two first pull rods 41, the end of the traction member 32 near the first pull rod 41 is divided into two by one, so a spring is added between the separation point and the limit block 22 to improve the structure;

[0092] A through hole 23 communicating with the conical cavity 211 is formed on the top of the spreader catcher 2 , and one end of the connecting piece 31 passing through the through hole 23 is fixedly connected to the conical spreader head 11 .

[0093] Among them, the top of the lifting head 1 is hollow, and if the connecting member 31 is a stainless steel guide rope, the connecting member 31 passes through the through hole 23 and extends to the ground, which is used to achieve the guiding and positioning of the lifting device catcher 2;

[0094] Both sides of the top of the sling catcher 2 are fixedly mounted with fixing seats 24 , and the fixing seats 24 are hung on the hook of the lifting equipment through the auxiliary device 5 .

[0095] Spreader catcher 2 embodiment 2: as shown in the attached Figure 1 and attached Figure 7 As shown, the spreader catcher 2 includes: a positioning barrel 25, a load-bearing side plate 26 and a shell auxiliary side plate 27;

[0096] Two opposite and parallel load-bearing side plates 26 and two opposite and parallel shell auxiliary side plates 27 are respectively fixedly installed around the positioning barrel 25, and the tops of the two load-bearing side plates 26 are fixedly installed with fixed seats 24, and the fixed seats 24 are hung on the hook of the lifting equipment through the auxiliary device 5;

[0097] The inner diameter of the positioning barrel 25 is not less than the diameter of the locking surface 112;

[0098] The positioning barrel 25 is used to capture the conical lifting head 11 of the lifting head 1 so that the locking load-bearing block 43 contacts the locking surface 112 to realize the locking function.

[0099] In a preferred embodiment, as shown in the attached Figure 7 As shown, through grooves 251 for locking the rotation of the load-bearing block 43 are opened on both sides of the positioning barrel 25, so that the rotation of the locking load-bearing block 43 is not hindered.

[0100] In a preferred embodiment, as shown in the attached Figure 1 and attached Figure 7 As shown, the auxiliary device 5 includes: a lifting ring 51 and a lifting belt 52;

[0101] The lifting ring 51 passes through the top of the fixing seat 24, and the lifting ring 51 is rotatably connected to the fixing seat 24. The two ends of the lifting belt 52 are movably connected to the top of the two lifting rings 51, and the lifting belt 52 is hung on the hook of the lifting equipment; so that the lifting device catcher 2 that captures the conical lifting device head 11 can be lifted by using the hook of the lifting equipment.

[0102] A lifting method for underwater blind lifting includes the above-mentioned lifting system, and the specific method includes the following steps:

[0103] Step 1: Preparation:

[0104] First, install the lifting head 1 on the lifting load and ensure that the two are firmly connected. Then, extend the connecting piece 31 installed on the lifting head 1 to the ground, tighten it appropriately and set it aside for use.

[0105] Step 2: Start hoisting:

[0106] When the load needs to be hoisted, first check whether the locking mechanism 4 and the traction member 32 of the sling catcher 2 are flexible and free of jamming; after confirming that the pulling traction member 32 is smooth, the elastic force is moderate, and there is no abnormality; then, the operator starts the hoisting equipment, passes the connecting member 31 through the top of the sling catcher 2, and operates the hook of the hoisting equipment to descend, so that the hook and the sling catcher 2 are lowered underwater along the connecting member 31; then, under the guidance of the connecting member 31, the sling catcher 2 moves along the predetermined path toward the hoisting head 1;

[0107] Step 3: Docking and locking:

[0108] When the spreader catcher 2 catches the lifting head 1, the lifting head 1 first enters the capture chamber 21 or the positioning barrel 25 of the spreader catcher 2, and then the locking load-bearing block 43 of the locking mechanism clamps the lifting head 1, and the locking load-bearing block 43 cooperates with the locking surface 112 to achieve stable locking;

[0109] Step 4: Lifting and hoisting:

[0110] After the spreader catcher 2 captures the lifting head 1 and locks it successfully, the operator can start the lifting equipment, and the hook of the lifting equipment pulls the spreader catcher 2 and the captured lifting load to above the water surface;

[0111] Step 5: Unlock and separate:

[0112] If the sling is unlocked and separated on the water surface, after the hoisted load is successfully hoisted to the designated position, the hoisted load is stably placed on the ground work position, and the sling catcher 2 is located on the hoisting head 1 above the hoisted load. At this time, the traction member 32 is in a non-stressed state. The operator manually pulls the traction member 32, and the traction member 32 drives the first pull rod 41 connected to it and drives the locking load-bearing block 43 through the locking load-bearing shaft 45 to release the docking and locking of the sling catcher 2 and the hoisting head 1, and at the same time starts the hook of the hoisting equipment to lift the sling catcher 2 to achieve the separation of the two;

[0113] If the sling catch 2 is unlocked and separated underwater, then when the hoisted load is successfully hoisted from the ground to the designated underwater position, the sling catch 2 is located on the hoisting head 1 above the hoisted load. At this time, the hoisted load is in the water, and the traction member 32 is in a non-stressed state. The operator manually pulls the traction member 32, and the traction member 32 drives the first pull rod 41 connected to it and drives the locking load-bearing block 43 through the locking load-bearing shaft 45 to release the docking and locking of the sling catch 2 and the hoisting head 1, and at the same time starts the crane to lift the catcher to separate the two; then, after the sling catch 2 leaves the water surface along the connecting member 31, the sling catch 2 is taken out from the connecting member 31, and the connecting member 31 is appropriately tightened and fixed to the ground anchor point. The sling catch 2 is naturally dried and placed in the designated position for the next hoisting operation.

[0114] In a preferred embodiment, as shown in the attached Figure 1 , Attachment Figure 2 and attached Figure 3 As shown, in step three, when the lifting head 1 enters the capture cavity 21 conical cavity 211 or the positioning barrel 25 of the sling catcher 2, it will overcome the locking spring 44 and push open the two locking load-bearing blocks 43. Then the two locking load-bearing blocks 43 will reset and match the locking surface 112 to ensure precise docking.

[0115] Among them, through the cooperation of the lifting head 1 and the lifting device catcher 2, as well as the function of the guide component 3, the blind lifting function of the submersible pump under water is realized, and direct operation can be performed without divers or drainage and pool cleaning;

[0116] In a preferred embodiment, as shown in the attached Figure 1 , Attachment Figure 2 and attached Figure 3 As shown, in step 2, step 4 and step 5, if the sling catcher 2 moves, the operator needs to manually retract the traction member 32 to avoid malfunction;

[0117] If the sling catcher 2 and the lifting head 1 move, the operator needs to manually pull the connecting member 31 and the traction member 32 to the ground to ensure the stability and safety of the lifting process.

[0118] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0119] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lifting system for underwater blind lifting, characterized by: include: A lifting head (1) fixedly mounted on the top of a lifting load, a lifting device catcher (2) detachably connected to a lifting hook of a lifting device, and a guide assembly (3); The guide assembly (3) comprises: a connecting piece (31) for guiding the sling catcher (2) to dock and lock with the lifting head (1) and a traction piece (32) for releasing the sling catcher (2) from docking and locking with the lifting head (1); The sling catcher (2) is movably sleeved on the connecting piece (31) and slides along the connecting piece (31), and a locking mechanism (4) for capturing the lifting head (1) is provided on the sling catcher (2); One end of the connecting member (31) is fixedly connected to the lifting head (1); and one end of the traction member (32) is fixedly connected to the locking mechanism (4).

2. A lifting system for underwater blind lifting according to claim 1, characterized in that: The locking mechanism (4) comprises: a first pull rod (41), a second pull rod (42), a locking load-bearing block (43), a locking spring (44) and a locking load-bearing shaft (45); The two locking load-bearing shafts (45) are respectively rotatably connected to the two sides of the sling catcher (2), and the two locking load-bearing blocks (43) for capturing the lifting head (1) are respectively fixedly connected to the middle parts of the two locking load-bearing shafts (45). One end of the first pull rod (41) and one end of the second pull rod (42) are respectively fixedly installed on the two ends of the locking load-bearing shaft (45), and the two second pull rods (42) are fixedly connected by a locking spring (44). The ends of the two first pull rods (41) away from the locking load-bearing shaft (45) are fixedly connected to the traction member (32).

3. A lifting system for underwater blind lifting according to claim 2, characterized in that: The lifting head (1) comprises: a conical lifting head (11) and a circular support column (12) fixedly installed on the top of the lifting load. The smaller end of the conical sling head (11) is configured as a connecting end (111), the bottom surface of the conical sling head (11) is configured as a locking surface (112), the connecting end (111) is fixedly connected to one end of the connecting piece (31), the diameter of the locking surface (112) is larger than the diameter of the circular support column (12), and the top of the circular support column (12) is fixedly connected to the middle of the locking surface (112); One end of the two locking load-bearing blocks (43) that is close to each other clamps the circular support column (12) and contacts the locking surface (112).

4. A lifting system for underwater blind lifting according to claim 3, characterized in that: The sling catcher (2) is provided with a capture cavity (21) extending to the bottom surface, and the capture cavity (21) comprises: a conical cavity (211) located inside the sling catcher (2) and a cylindrical cavity (212) located between the bottom surface of the sling catcher (2) and the conical cavity (211); The shape of the conical cavity (211) is the same as that of the conical hanger head (11), the maximum diameter of the conical cavity (211) is not greater than the diameter of the cylindrical cavity (212), and the diameter of the locking surface (112) is not greater than the diameter of the cylindrical cavity (212); A limit block (22) is fixedly installed on one side of the sling catcher (2) close to the first pull rod (41), and the traction member (32) passes through the interior of the limit block (22); A through hole (23) communicating with the conical cavity (211) is provided at the top of the sling catcher (2); one end of the connecting piece (31) passing through the through hole (23) is fixedly connected to the conical sling head (11); A fixing seat (24) is fixedly mounted on both sides of the top of the lifting device catcher (2), and the fixing seat (24) is hung on the hook of the lifting equipment through an auxiliary device (5).

5. The lifting system for underwater blind lifting according to claim 3 is characterized in that: The sling catcher (2) comprises: a positioning barrel (25), a load-bearing side plate (26) and an outer shell auxiliary side plate (27); Two opposite and parallel load-bearing side plates (26) and two opposite and parallel shell auxiliary side plates (27) are respectively fixedly mounted on the four sides of the positioning barrel (25), and a fixing seat (24) is fixedly mounted on the top of the two load-bearing side plates (26), and the fixing seat (24) is hung on the hook of the lifting equipment through an auxiliary device (5); The inner diameter of the positioning barrel (25) is not less than the diameter of the locking surface (112).

6. A lifting system for underwater blind lifting according to claim 5, characterized in that: Through grooves (251) for locking the bearing block (43) to rotate are formed on both sides of the positioning barrel (25).

7. A lifting system for underwater blind lifting according to claim 4 or 5, characterized in that: The auxiliary device (5) comprises: a lifting ring (51) and a lifting belt (52); The lifting ring (51) passes through the top of the fixing seat (24), and the lifting ring (51) is rotatably connected to the fixing seat (24). The two ends of the lifting belt (52) are movably sleeved on the tops of the two lifting rings (51), and the lifting belt (52) is hung on the hook of the lifting equipment.

8. A method for underwater blind lifting, comprising the lifting system according to any one of claims 1 to 7, characterized in that: The specific method includes the following steps: Step 1: Install the lifting head (1), and extend the connecting piece (31) installed on the lifting head (1) to the ground anchor point; Step 2: Start the lifting equipment, insert the lifting device catcher (2) into the connecting piece (31), and after the lifting hook of the lifting equipment hooks the lifting device catcher (2), move the lifting hook and the lifting device catcher (2) toward the lifting head (1) along the path constructed by the connecting piece (31); Step 3: The lifting device catcher (2) catches the lifting head (1); Step 4: Move the lifting device catcher (2) and the lifting head (1) caught by it to a designated position; Step 5: Determine whether the position where the lifting device catcher (2) is unlocked and separated from the lifting head (1) is on the water surface or underwater: If on the water surface, the traction member (32) is pulled to release the docking and locking of the sling catcher (2) and the lifting head (1), and at the same time, the sling catcher (2) is lifted by the lifting equipment to separate the two; If it is underwater, not only the traction member (32) is pulled to release the docking and locking of the sling catcher (2) and the lifting head (1), but also the sling catcher (2) is lifted by the lifting equipment to separate the two; the sling catcher (2) is also separated from the connecting member (31) to wait for the next lifting operation.

9. A method for underwater blind lifting according to claim 8, characterized in that: In step three, when the lifting head (1) enters the interior of the lifting device catcher (2), that is, the conical cavity (211) of the capture cavity (21) or the positioning barrel (25), it will overcome the locking spring (44) and push the two locking load-bearing blocks (43) apart. Subsequently, when the two locking load-bearing blocks (43) are reset, they engage with the locking surface (112) to ensure precise docking.

10. A method for underwater blind lifting according to claim 8, characterized in that: In the steps 2, 4 and 5, if the sling catcher (2) moves, the traction member (32) needs to be retracted to avoid malfunction; If the lifting device catcher (2) and the lifting head (1) move, the connecting piece (31) and the traction piece (32) need to be pulled and stored to ensure the stability and safety of the lifting process.

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