Floating rope pulley assembly, positioning pile lifting device and pile lowering method

Abstract

This invention relates to the field of marine lifting equipment, specifically disclosing a floating rope pulley assembly and a positioning pile lifting device, comprising: a fixed plate, a first pulley, a rotating frame assembly with a second pulley, a guide rod with a counterweight, a third pulley mounted on the counterweight, an electromagnet, a first locking block and a second locking block, a rope, a tower, and a winch. It also discloses a method for lowering positioning piles, implemented using the aforementioned positioning pile lifting device. This invention, by leaving a certain amount of slack in the middle of the rope and using the counterweight to pull and manage the line, and by using the rotating frame assembly to give the second pulley a certain rotational slack, allows the rope pulled by the counterweight to offset the expansion and contraction of the rope at the positioning pile when the hull is subjected to external forces and moves vertically. The rotating frame assembly can also offset the rotation of the rope, providing a buffering effect in both the longitudinal and lateral directions, maintaining the position of the positioning pile in the arrangement of holes, thereby ensuring construction quality and improving construction safety.

Description

Technical Field

[0001] This invention belongs to the field of marine lifting equipment, and specifically relates to a floating rope wheel assembly, a positioning pile lifting device, and a pile lowering method. Background Technology

[0002] A dredging vessel is a type of waterway dredging vessel. It typically requires drilling holes in the bottom of the waterway using a drilling machine, then pre-burying explosives in the holes for blasting and dredging.

[0003] When drilling operations are carried out by a reef-blasting vessel, it is usually necessary to lower positioning piles into the bottom of the channel to position the vessel and fix it in the correct location before drilling can begin. However, the operating environment for reef-blasting vessels is usually characterized by rapid currents, and if there is wind and waves or passing ships, the water surface will fluctuate longitudinally and laterally, causing the reef-blasting vessel to sway vertically and horizontally. When the vessel sways, it is easy to pull out the positioning piles, making it impossible for the piles to touch the bottom, causing the vessel to drift, or even causing it to capsize, thus affecting the construction quality, efficiency, and equipment safety.

[0004] Patent application CN202210702592.6 discloses a cable control protection device for a drilling rig vessel's positioning pile, including a bracket. A positioning pile body is slidably connected to the inner wall of the bracket. A steel cable is fixedly connected to the surface of the positioning pile body. A pulley, rotatably connected to the bracket, is slidably connected to the surface of the steel cable. A cable control assembly is slidably connected to the surface of the steel cable. A fixing block is fixedly installed on the front of the bracket. The cable control assembly consists of a centrifugal component, a deceleration component, and a buffer component. The deceleration component is located on both sides of the centrifugal component, and the buffer component is located on the side of the deceleration component furthest from the centrifugal component. Although the centrifugal component in this prior art can effectively solve the problem of stalling during the positioning pile's descent, thus preventing the positioning pile from detaching, the positioning pile in this prior art can still shift due to longitudinal and lateral movement when the vessel encounters wind and waves, affecting its safety performance during construction.

[0005] The above background information is provided only to aid in understanding the inventive concept and technical solution of this invention. It does not necessarily belong to the prior art of this patent application. In the absence of clear evidence that the above information was disclosed on the filing date of this patent application, the above background information should not be used to evaluate the novelty and inventiveness of this application. Summary of the Invention

[0006] The purpose of this invention is to provide a floating rope wheel assembly, a positioning pile lifting device, and a pile lowering method, thereby overcoming the shortcomings of existing reef-blasting vessel positioning piles, which are easily affected by longitudinal and lateral water surface fluctuations during construction, causing displacement, affecting work quality and personnel safety.

[0007] To achieve the above objectives, the present invention provides a floating rope pulley assembly, comprising: a fixed plate having a first pulley and an arc-shaped waist-shaped hole; a rotating frame assembly having a first end and a second end opposite to each other, the first end being rotatably connected to the fixed plate and having a wire passage, the second end extending outward from the outer periphery of the fixed plate and having a second pulley; a guide rod having one end fixedly connected to the rotating frame assembly, the other end of the guide rod extending downward from the fixed plate, the guide rod having a slidable counterweight, the counterweight having a third pulley, one end of the guide rod having an electromagnet capable of attracting the counterweight, the counterweight having a first engaging surface and a second engaging surface on both sides, the other end of the guide rod having a rotating seat; a first locking block and a second locking block, the first locking block being fixedly connected to the rotating frame assembly and having a first guide surface matching the first engaging surface, the second locking block being fixedly connected to the fixed plate and having a second guide surface matching the second engaging surface, wherein the first engaging surface interacts with the first guide surface and the second engaging surface interacts with the second engaging surface. The mutual contact between the second guide surfaces restricts the rotation of the first end; a rope, one end of which is connected to the positioning pile and the winch respectively, the middle part of which is wound around the top of the first pulley and the second pulley and the bottom of the third pulley, and can pass through the cable passage and the arc-shaped waist-shaped hole; the rotating frame assembly includes: a rotating plate, which is located at the bottom of the fixed plate, one end of which is rotatably connected to the fixed plate through a rotating member, the rotating member having a first through hole, and the rotating plate having a second through hole opposite to the first through hole, the first through hole and the second through hole being connected to each other to form the cable passage, the other end of which has a notch corresponding to the arc-shaped waist-shaped hole, through which the rope can pass; a rotating arm, which is located at the top of the fixed plate, and is fixedly connected to the rotating plate through a first connecting bolt, the second pulley being disposed on the rotating arm; a rotating sleeve, which is rotatably sleeved on the first connecting bolt and located in the arc-shaped waist-shaped hole.

[0008] Preferably, in the above technical solution, the rotation axis of the first end coincides with the axis of the wire passage, and the rotation axes of the first pulley, the second pulley and the third pulley are all perpendicular to the rotation axis of the first end.

[0009] Preferably, in the above technical solution, the center of the center line of the arc-shaped waist-shaped hole coincides with the axis of the wire passage.

[0010] Preferably, in the above technical solution, the rotating seat is provided with a spring baffle. When the counterweight moves closer to the other end of the guide rod, the spring baffle can abut against the counterweight and brake it.

[0011] Preferably, in the above technical solution, the normals of the first engaging surface and the second engaging surface are inclined toward one end of the guide rod, and the normals of the first guiding surface and the second guiding surface are inclined toward the other end of the guide rod.

[0012] Preferably, in the above technical solution, the edge of the first guide surface is provided with a first arc edge, the edge of the second guide surface is provided with a second arc edge, and the middle parts of the first arc edge and the second arc edge both arch towards the other end of the guide rod.

[0013] Preferably, in the above technical solution, the edge of the first through hole is provided with a rounded corner.

[0014] On the other hand, to achieve the above objectives, the present invention also provides a positioning pile lifting device, which includes the floating rope wheel assembly as described above, and a tower. The fixing plate is fixedly installed at one end of the tower, and a base is provided at the other end of the tower. The rotating seat is rotatably connected to the base. The guide rod and the counterweight are located inside the tower. A winch is also installed inside the tower near the base. The other end of the rope is fixedly connected to the shaft of the winch.

[0015] On the other hand, to achieve the above objectives, the present invention also provides a method for lowering positioning piles, which is implemented using the positioning pile lifting device described above, and includes the following steps:

[0016] Fixed counterweight: A positioning stake is suspended at one end of the rope, and the winch is controlled to wind up the other end of the rope, causing the counterweight to rise and the electromagnet to attract the counterweight.

[0017] Lowering the positioning pile: Control the winch to release the other end of the rope, which will slowly lower the positioning pile until it touches the bottom;

[0018] Floating operation: Control the winch to continue releasing the line, de-energize the electromagnet, and allow the counterweight to slide freely to a position close to the rotating seat. Turn off and lock the winch, keep the positioning pile in contact with the bottom, and keep the counterweight suspended. When the hull rises vertically, the middle of the rope can lift the counterweight. When the hull moves laterally, the rope can pull the second pulley to generate a certain amount of floating rotation along with the rotating frame assembly.

[0019] Retrieve the positioning pile: Start the winch to wind up one end of the rope. The counterweight is pulled up by the middle of the rope. The first engaging surface and the first guide surface come into contact with each other, and the second engaging surface and the second guide surface come into contact with each other, so that the rotating frame group automatically aligns. The electromagnet is energized to attract the counterweight, thereby locking the rotation of the rotating frame group. Continue to run the winch to wind up the rope, so that one end of the rope lifts the positioning pile.

[0020] Compared with existing technologies, the present invention has the following advantages:

[0021] 1. The floating rope pulley assembly and positioning pile lifting device in this invention can achieve this by leaving a certain margin in the middle of the rope and pulling it with a counterweight, and then using a rotating frame assembly to give the second pulley a certain rotational margin. When the hull is subjected to external force and moves vertically, the rope pulled by the counterweight can offset the expansion and contraction of the rope at the positioning pile, and the rotating frame assembly can offset the rotation of the rope. This provides a buffering effect in both the longitudinal and lateral directions, ensuring that the positioning pile is always positioned at the location of the arrangement hole during operation, thereby guaranteeing construction quality and improving construction safety.

[0022] 2. The counterweight in this invention can not only pull the excess portion in the middle of the rope, making each part of the rope tightly wound in the groove of each pulley, but also be attracted by an electromagnet. The first engaging surface and the first guide surface are in contact with each other, and the second engaging surface and the second guide surface are in contact with each other, thereby locking the rotation of the rotating frame assembly. When the electromagnet and the counterweight are in contact with each other, the excess portion in the middle of the rope can also be eliminated.

[0023] 3. In this invention, the normals of the first and second engaging surfaces are inclined upwards, and the normals of the first and second guiding surfaces are inclined downwards. Furthermore, the edges of the first and second guiding surfaces are respectively provided with a first arc edge and a second arc edge. When the counterweight approaches the electromagnet, the rotating frame assembly can be automatically aligned by the mutual contact between the guiding surfaces and the engaging parts.

[0024] 4. In the rotating frame assembly of the present invention, the rotating arm can extend the second pulley outward, so that there is a certain safe distance between the positioning pile and the tower. Furthermore, a rotatable rotating sleeve is fitted on the connecting bolt between the rotating arm and the rotating plate, and the rotating sleeve slides within the arc-shaped waist-shaped hole. This rotating sleeve not only serves to support and limit the connecting bolt, but also reduces the coefficient of friction when the rotating frame rotates.

[0025] 5. In this invention, the rotation axis of the rotating frame assembly coincides with the axis of the cable passage. When the rotating frame assembly rotates, the rope will not interfere with the rotating frame assembly, thereby preventing the rope from falling out of the grooves in each pulley. Furthermore, the first through hole of the rotating component has a rounded corner on its edge, which can play a protective role when the rope slides relative to the rotating component, thereby preventing accelerated wear of the rope. Attached Figure Description

[0026] Figure 1 This is a structural diagram of the floating rope wheel assembly in Embodiment 1.

[0027] Figure 2 This is a structural diagram of the floating rope wheel assembly in Embodiment 1 from another angle.

[0028] Figure 3 This is a structural diagram of the fixing plate, the first pulley, and the second locking block in Embodiment 1.

[0029] Figure 4 This is a structural diagram of the rotating frame assembly in Embodiment 1.

[0030] Figure 5 This is a structural diagram of the rotating frame assembly from another angle in Embodiment 1.

[0031] Figure 6 This is a structural diagram of the guide rod and counterweight in Embodiment 1.

[0032] Figure 7 This is a structural diagram of the positioning pile lifting device in Embodiment 2.

[0033] Explanation of key figure labels:

[0034] 100-Fixing plate, 101-First pulley, 102-Arc-shaped waist-shaped hole, 103-Mounting hole;

[0035] 200-Rotating frame assembly, 201-First end, 202-Second end, 203-Wire passage, 204-Second pulley, 205-Rotating plate, 206-First through hole, 207-Second through hole, 208-Notch, 209-Rotating arm, 210-First connecting bolt, 211-Rotating sleeve, 212-Rotating component, 213-Second connecting bolt, 214-Rounded corner;

[0036] 300-guide rod, 301-counterweight, 302-third pulley, 303-electromagnet, 304-first engagement surface, 305-second engagement surface, 306-rotating seat, 307-spring baffle;

[0037] 400 - First locking block, 401 - Second locking block, 402 - First guide surface, 403 - Second guide surface, 404 - First arc edge, 405 - Second arc edge;

[0038] 500-rope;

[0039] 600 - Tower, 601 - Base, 602 - Winch. Detailed Implementation

[0040] 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.

[0041] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "top surface," "bottom surface," "inner," "outer," "inner side," and "outer side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0042] In the description of this invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. Where the terms "first," "second," and "third" are used for descriptive purposes and to distinguish technical features, they should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the sequential relationship of the indicated technical features.

[0043] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The embodiments of this invention will now be described according to its overall structure. Example

[0044] like Figures 1 to 6As shown, the floating rope wheel assembly in this embodiment includes: a fixed plate 100, a first pulley 101, an arc-shaped waist-shaped hole 102, a mounting hole 103, a rotating frame assembly 200, a first end 201, a second end 202, a wire passage 203, a second pulley 204, a rotating plate 205, a first through hole 206, a second through hole 207, a notch 208, a rotating arm 209, a first connecting bolt 210, a rotating sleeve 211, a rotating component 212, a second connecting bolt 213, a rounded corner 214, a guide rod 300, a counterweight 301, a third pulley 302, an electromagnet 303, a first engaging surface 304, a second engaging surface 305, a rotating seat 306, a spring baffle 307, a first locking block 400, a second locking block 401, a first guide surface 402, a second guide surface 403, a first arc edge 404, a second arc edge 405, and a rope 500.

[0045] A first pulley 101 is installed on the top surface of the fixing plate 100 and an arc-shaped waist-shaped hole 102 is provided. The rotation axis of the first pulley 101 is parallel to the top surface of the fixing plate 100. The arc-shaped waist-shaped hole 102 passes through the top and bottom surfaces of the fixing plate 100. An installation hole 103 is provided between the first pulley 101 and the arc-shaped waist-shaped hole 102, which passes through the top and bottom surfaces of the fixing plate 100.

[0046] The rotating frame assembly 200 includes a first end 201 and a second end 202. The first end 201 is rotatably connected to the mounting hole and is provided with a wire passage 203. The rotation axis of the first end 201 coincides with the axis of the wire passage 203. The second end 202 extends outward from the outer periphery of the fixed plate 100 and is equipped with a second pulley 204. The rotation axis of the second pulley 204 is perpendicular to the rotation axis of the first end 201.

[0047] More specifically, the rotating frame assembly 200 also includes: a rotating plate 205, a rotating arm 209, and a rotating sleeve 211. The rotating plate 205 is located at the bottom of the fixed plate 100. One end of the rotating plate 205 is fixedly connected to the rotating component 212 by a second connecting bolt 213. The rotating component 212 can be rotatably fitted into the mounting hole 103 to form a rotatable connection with the fixed plate 100. A first through hole 206 is provided through the top and bottom of the rotating component 212. A second through hole 207 is provided at one end of the rotating plate 205, which is aligned with the first through hole 206. When the rotating component 212 and the rotating plate 205 are fixedly connected by the second connecting bolt 213, the first through hole 206 and the second through hole 207 are aligned with each other to form a wire passage 203. A rounded corner 214 is provided at the edge of the first through hole 206. A notch 208 is provided at the other end of the rotating plate 205. The notch 208 corresponds to the arc-shaped waist-shaped hole 102, and the rope 500 can pass through the intersection area between the notch 208 and the arc-shaped waist-shaped hole; the rotating arm 209 is installed on the top of the fixed plate 100, and the rotating arm 209 is fixedly connected to the rotating plate 205 by the first connecting bolt 210. The end of the rotating arm 209 extends outward from the edge of the fixed plate 100, and the second pulley 204 is installed at the end of the rotating arm 209; the rotating sleeve 211 is rotatably fitted on the first connecting bolt 210 and located in the arc-shaped waist-shaped hole 102. When the rotating frame assembly rotates, the rotating sleeve 211 can move in the arc-shaped waist-shaped hole 102 and form rolling friction with the hole wall. The center of the center line of the arc-shaped waist-shaped hole 102 coincides with the axis of the wire passage 203.

[0048] A guide rod 300 is installed on the rotating plate 205. One end of the guide rod 300 is fixedly connected to the bottom of the rotating plate 205 and perpendicular to its bottom surface. The other end of the guide rod 300 extends downwards towards the fixed plate 100. There are two guide rods 300, which are parallel to each other. A slidable counterweight 301 is fitted on the guide rod 300. A third pulley 302 is installed on the top of the counterweight 301. An electromagnet 303 is provided at one end of the guide rod 300. The electromagnet 303 can attract the top of the counterweight 301. A first engaging surface 304 and a second engaging surface 305 are respectively provided on both sides of the counterweight 301. A rotating seat 306 is fixedly installed at the other end of the guide rod 300. A spring baffle 307 is installed on the top surface of the rotating seat 306. When the counterweight 301 rapidly approaches the other end of the guide rod 300, the spring baffle 307 can abut against the bottom of the counterweight 301 and brake it.

[0049] The first locking block 400 is fixedly connected to the rotating plate 205 via a connecting post and is located below the rotating plate 205. The first locking block 400 has a first guide surface 402 that matches the first engaging surface 304. The second locking block 401 is fixedly connected to the fixing plate 100 via a connecting post and is located below the fixing plate 100. The second locking block 401 has a second guide surface 403 that matches the second engaging surface 305. The mutual contact between the first engaging surface 304 and the first guide surface 402, and between the second engaging surface 305 and the second guide surface 403, restricts the rotation of the first end 201 of the rotating frame assembly 200. The normals of the first engaging surface 304 and the second engaging surface 305 are inclined at one end of the guide rod 300, and the normals of the first guide surface 402 and the second guide surface 403 are inclined at the other end of the guide rod 300. The first arc edge 404 is provided on the edge of the first guide surface 403, and the second arc edge 405 is provided on the edge of the second guide surface 403. The middle of the first arc edge 404 and the second arc edge 405 are both arched towards the other end of the guide rod 300. When the rotating frame 200 rotates at a certain angle, when the counterweight 301 moves towards the rotating frame 200, it can be guided by the first arc edge 404 and the second arc edge 405 to make the first engaging surface 304 abut against the first guide surface 402, and the second engaging surface 305 abut against the second guide surface 403, so that the rotating frame 200 rotates by itself until the first locking block 400 and the second locking block 401 are parallel to each other. When the counterweight 301 is locked between the first locking block 400 and the second locking block 401, the counterweight 301 is attracted and fixed by the electromagnet 303, thereby restricting the relative rotation between the rotating frame 200 and the fixed plate 100.

[0050] One end of the rope 500 is connected to the positioning pile and the winch 602 respectively. The middle part of the rope 500 is wound around the top of the first pulley 101 and the second pulley 204 and the bottom of the third pulley 302 respectively, and can pass through the wire passage 203 and the arc-shaped waist hole 102. When the electromagnet 303 and the counterweight 301 are separated, the counterweight 301 can fall freely along the guide rail due to its own weight, and pull the middle part of the rope 500 taut. Example

[0051] like Figure 7As shown, the positioning pile lifting device in this embodiment includes the floating rope wheel assembly in the above embodiment. In addition to the above structure, it also includes a tower 600. The tower 600 is fixed vertically on the ship's deck. The fixing plate 100 is fixedly installed on the top of the tower 600. A base 601 is installed at the bottom of the tower 600. The rotating seat 306 is rotatably connected to the base 601. The guide rod 300 and the counterweight 301 are both located inside the tower 600. A winch 602 is also installed inside the tower 600 near the base 601. The end of the rope 500 is fixedly connected to the shaft of the winch 602. Example

[0052] The method for lowering the positioning pile in this embodiment needs to be implemented using the positioning pile lifting device in Embodiment 2, and it specifically includes the following steps:

[0053] Fixed counterweight: Hang a positioning stake at one end of the rope 500, control the winch 602 to wind up the other end of the rope 500, so that the middle of the rope 500 is straightened and the counterweight 301 is raised, and the electromagnet 303 is turned on to attract the counterweight 301.

[0054] Lowering the positioning pile: Control the winch 602 to release the other end of the rope 500, and the rope 500 will drive the positioning pile to slowly lower until it touches the bottom;

[0055] Floating operation: Control the winch 602 to continue releasing the line, de-energize the electromagnet 303, and allow the counterweight 301 to slide freely to a position close to the rotating seat 306. Close and lock the winch 602 to keep the positioning pile in contact with the bottom and keep the counterweight 301 suspended. When the hull rises vertically, the middle part of the rope 500 can lift the counterweight 301. The middle part of the rope 500 is always taut. When the hull moves laterally, the rope 500 can pull the second pulley 204 to generate a certain amount of floating rotation with the rotating frame 200, so that the position of the positioning pile is not moved.

[0056] Retrieve the positioning pile: Start the winch 602 to wind up one end of the rope 500. The counterweight 301 is pulled up by the middle of the rope 500. The first engaging surface 304 and the first guide surface 402 come into contact with each other, and the second engaging surface 305 and the second guide surface 403 come into contact with each other, so that the rotating frame 200 automatically aligns. The electromagnet 303 is energized to attract the counterweight 301, thereby locking the rotation of the rotating frame 200. Continue to run the winch 602 to wind up, so that one end of the rope 500 lifts the positioning pile.

[0057] In summary, the floating rope wheel assembly, positioning pile lifting device, and pile lowering method of this invention can achieve the following: by leaving a certain margin in the middle of the rope and pulling it with a counterweight, and then using a rotating frame assembly to give the second pulley a certain rotational margin, when the hull is subjected to external forces and moves vertically, the rope pulled by the counterweight can offset the expansion and contraction of the rope at the positioning pile, and the rotating frame assembly can offset the rotation of the rope. This provides a buffering effect in both the longitudinal and lateral directions, ensuring that the positioning pile is always positioned at the location of the arrangement hole during operation, thereby guaranteeing construction quality and improving construction safety.

[0058] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the invention to the precise forms disclosed, and it is obvious that many changes and variations can be made based on the above teachings. Although embodiments of the invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. The purpose of selecting and describing exemplary embodiments is to explain the specific principles of the invention and its practical application, so that those skilled in the art, after reading this specification, can make modifications, substitutions, variations, and various choices and changes to the embodiments as needed without departing from the principles and spirit of the invention, provided that such modifications, substitutions, variations, and choices and changes are within the scope of the claims of the invention and are protected by patent law.

Claims

1. A floating rope pulley assembly, characterized in that, include: The fixing plate is provided with a first pulley and an arc-shaped hole; A rotating frame assembly includes a first end and a second end opposite to each other. The first end is rotatably connected to the fixed plate and is provided with a wire passage. The second end extends outward from the outer periphery of the fixed plate and is provided with a second pulley. A guide rod, one end of which is fixedly connected to the rotating frame assembly, and the other end of which extends downward toward the fixed plate. A slidable counterweight is provided on the guide rod, and a third pulley is provided on the counterweight. An electromagnet capable of attracting the counterweight is provided at one end of the guide rod. A first engaging surface and a second engaging surface are provided on both sides of the counterweight. A rotating seat is provided at the other end of the guide rod. The first locking block and the second locking block are fixedly connected to the rotating frame assembly and have a first guide surface that matches the first locking surface. The second locking block is fixedly connected to the fixed plate and has a second guide surface that matches the second locking surface. The rotation of the first end can be restricted by the mutual abutment between the first locking surface and the first guide surface and between the second locking surface and the second guide surface. A rope, one end of which is connected to a positioning stake and a winch respectively, has its middle section wound around the top of the first pulley and the second pulley and below the third pulley, and can pass through the cable passage and the arc-shaped waist hole. The rotating frame assembly includes: a rotating plate located at the bottom of the fixed plate, one end of which is rotatably connected to the fixed plate via a rotating component, the rotating component having a first through hole, and the rotating plate having a second through hole aligned with the first through hole, the first and second through holes forming the cable passage; the other end of the rotating plate having a notch corresponding to the arc-shaped waist-shaped hole, through which the rope can pass; a rotating arm located at the top of the fixed plate, the rotating arm being fixedly connected to the rotating plate via a first connecting bolt, and a second pulley mounted on the rotating arm; and a rotating sleeve rotatably mounted on the first connecting bolt and located within the arc-shaped waist-shaped hole.

2. The floating rope pulley assembly according to claim 1, characterized in that, The rotation axis of the first end coincides with the axis of the wire passage, and the rotation axes of the first pulley, the second pulley and the third pulley are all perpendicular to the rotation axis of the first end.

3. The floating rope pulley assembly according to claim 2, characterized in that, The center of the center line of the arc-shaped waist-shaped hole coincides with the axis of the wire passage.

4. The floating rope pulley assembly according to claim 1, characterized in that, The rotating seat is equipped with a spring baffle. When the counterweight moves closer to the other end of the guide rod, the spring baffle can abut against the counterweight and brake it.

5. The floating rope pulley assembly according to claim 1, characterized in that, The normals of the first engaging surface and the second engaging surface are inclined toward one end of the guide rod, while the normals of the first guiding surface and the second guiding surface are inclined toward the other end of the guide rod.

6. The floating rope pulley assembly according to claim 5, characterized in that, The first guide surface has a first arc edge, and the second guide surface has a second arc edge. The middle parts of the first arc edge and the second arc edge both arch towards the other end of the guide rod.

7. The floating rope pulley assembly according to claim 1, characterized in that, The edge of the first through hole is rounded.

8. A positioning pile lifting device, comprising a floating rope pulley assembly as described in any one of claims 1 to 7, characterized in that, Also includes: The tower has a fixed plate fixedly installed at one end, and a base is provided at the other end of the tower. The rotating seat is rotatably connected to the base. The guide rod and the counterweight are located inside the tower. A winch is also installed inside the tower near the base. The other end of the rope is fixedly connected to the winch shaft.

9. A method for lowering positioning piles, implemented using the positioning pile lifting device described in claim 8, characterized in that... Includes the following steps: Fixed counterweight: A positioning stake is suspended at one end of the rope, and the winch is controlled to wind up the other end of the rope, causing the counterweight to rise and the electromagnet to attract the counterweight. Lowering the positioning pile: Control the winch to release the other end of the rope, which will slowly lower the positioning pile until it touches the bottom; Floating operation: Control the winch to continue releasing the line, de-energize the electromagnet, and allow the counterweight to slide freely to a position close to the rotating seat. Turn off and lock the winch, keep the positioning pile in contact with the bottom, and keep the counterweight suspended. When the hull rises vertically, the middle of the rope can lift the counterweight. When the hull moves laterally, the rope can pull the second pulley to generate a certain amount of floating rotation along with the rotating frame assembly. Retrieve the positioning pile: Start the winch to wind up one end of the rope. The counterweight is pulled up by the middle of the rope. The first engaging surface and the first guide surface come into contact with each other, and the second engaging surface and the second guide surface come into contact with each other, so that the rotating frame group automatically aligns. The electromagnet is energized to attract the counterweight, thereby locking the rotation of the rotating frame group. Continue to run the winch to wind up the rope, so that one end of the rope lifts the positioning pile.

Images