Reversible three-cable positioning system, mounting method and barrel dumping method

Abstract

The invention provides a reversible three-cable positioning system, a mounting method and a barrel dumping method. The reversible three-cable positioning system comprises a barrel assembly, a ship body fixing assembly and a driving and locking assembly, the barrel assembly is rotatably connected to a ship body, and a guide part is arranged on the barrel assembly and used for guiding a steel wire rope to achieve positioning during ship operation; the ship body fixing assembly is fixedly arranged on the ship body and used for achieving rotation and fixation of the barrel assembly; the driving and locking assembly comprises a driving part and a locking part, the driving part is used for driving the barrel assembly to be switched between the vertical operation state and the horizontal navigation state, and the locking part is used for fixing the barrel assembly when the barrel assembly is in the vertical operation state and fixing the barrel assembly when the barrel assembly is in the horizontal navigation state. Through the rotatable barrel structure, three-cable positioning can be conveniently achieved during ship operation, the barrel can be rapidly toppled over during ship sailing, and the influence of the barrel on ship sailing resistance is reduced to the maximum extent.

Description

Technical Field

[0001] This invention relates to the field of marine equipment technology, specifically to a tiltable three-cable positioning system, its installation method, and a method for tilting the hull. More particularly, it relates to a three-cable positioning system equipped on cutter suction dredgers (or similar construction vessels). Background Technology

[0002] The three-cable positioning system is a common positioning system used on cutter suction dredgers (or similar construction vessels). It is generally installed on the outside of the bow or stern of the hull. Traditional three-cable positioning systems involve many components, including not only the hull itself, but also corresponding hull lifting rails, lifting pulleys, and lifting wire ropes. The upper and lower fixing devices of the hull are also quite complex. All of these factors contribute to the large number of components and the overall size of the three-cable positioning system, which negatively impacts the hull's drag resistance performance.

[0003] To meet the positioning requirements of similar construction vessels such as cutter suction dredgers (or sludge removal vessels) during operation, and to minimize the adverse effects of the three-cable positioning system on the hull's resistance performance, there is an urgent need to develop a new type of safe, reliable, and easy-to-operate three-cable positioning system.

[0004] Patent document CN109252559B discloses a three-cable positioning system for a cutter suction dredger, which has three positioning winches, three positioning guide pulleys, a cylinder and pulley seats. However, its disadvantage is that it does not have a rotatable cylinder assembly, which causes the positioning system to generate greater resistance during navigation and reduces navigation efficiency. Summary of the Invention To address the shortcomings of existing technologies, the purpose of this invention is to provide a tiltable three-cable positioning system, an installation method, and a cylinder tilting method.

[0005] A reversible three-cable positioning system according to the present invention includes: a cylindrical assembly, a hull fixing assembly, and a driving and locking assembly; The cylindrical assembly is rotatably connected to the hull, and the cylindrical assembly is provided with a guide component for guiding the wire rope to achieve positioning during ship operations; The hull fixing assembly is fixedly installed on the hull and is used to realize the rotation and fixation of the cylindrical assembly; The drive and locking assembly includes a drive component and a locking component. The drive component is used to drive the cylinder assembly to switch between a vertical operating state and a horizontal navigation state. The locking component is used to fix the cylinder assembly when it is in the vertical operating state and to fix the cylinder assembly when it is in the horizontal navigation state.

[0006] Preferably, the guiding component includes a plurality of guide pulleys disposed at the top of the cylinder assembly and a plurality of rope discharge pulleys disposed at the bottom; the guide pulleys are arranged parallel to each other and spaced apart, for guiding different wire ropes respectively; The number of rope-exiting pulleys is equal to the number of guide pulleys. The rope-exiting pulleys on both sides are symmetrically inclined in opposite directions relative to the rope-exiting pulley in the middle, which is used to guide the wire rope to the positioning anchor without interference.

[0007] Preferably, the cylindrical assembly includes a cylindrical body, a cylindrical body fixing plate symmetrically arranged on the top of the cylindrical body, and a fixing seat fixed to the bottom of the cylindrical body; The cylinder fixing plate extends along the cylinder axial direction and is provided with a wire rope fixing hole, a rotating fixing pin hole and a rotating support shaft hole. The fixing base includes an upper fixing base and a lower fixing base, both of which have pin holes and are coaxially aligned.

[0008] Preferably, the top of the cylinder is provided with an upper pin support seat and a lower pin support seat, which are spaced apart along the axial direction of the cylinder to constrain the pin of the locking component; The pin includes an upper fixing pin, a lower fixing pin, and a connecting rod connecting the two. The upper fixing pin is provided with an upper fixing plate and a lower fixing plate. The lower fixing plate is used to abut against the lower pin support seat and limit the movement after the cylinder assembly is switched to the vertical operation state, thereby connecting the lower fixing pin to the fixing seat and the hull fixing assembly.

[0009] Preferably, the hull fixing assembly includes a support platform, a rotating support base, a fixing platform, and deck guide pulleys; The support platform is fixed to the outer edge of the deck of the ship, the rotating support seat is fixedly installed on the support platform, and the rotating support seat forms a rotating pair by cooperating with the rotating support shaft hole of the cylinder fixing plate through the support shaft. The fixed platform has a hole that mates with the pin hole of the fixed seat, which is used to insert the lower fixed pin after the cylinder assembly is switched to the vertical operation state. The deck guide pulley is used to change the direction of the steel wire rope used for rotating the drive component.

[0010] Preferably, the drive unit includes three positioning winches and a rotating steel wire rope; The positioning winches are installed on the deck of the ship's hull, and one of them is equipped with an auxiliary drum. One end of the rotating steel wire rope is wound around the auxiliary drum, and the other end is detachably connected to the steel wire rope fixing hole of the drum fixing plate, for driving the drum assembly to rotate.

[0011] Preferably, the locking component further includes: a rotating retaining pin; The rotating retaining pin is used to lock the cylinder assembly in the horizontal navigation state, and cooperates with the rotating retaining pin hole and rotating support seat of the cylinder fixing plate.

[0012] Preferably, the wire rope fixing hole of the cylinder fixing plate is used to bear the rotational traction force of the cylinder assembly, the rotating support shaft hole is used to support the rotation of the cylinder assembly, and the rotating fixing pin hole is used to bear the locking shear force.

[0013] An installation method for the reversible three-cable positioning system provided by the present invention includes the following steps: S1: Install three positioning winches and deck guide pulleys on the deck of the ship, and weld the fixed support platform, rotating support seat and fixed platform; S2: Assemble the guide pulley, cylinder fixing plate, rope outlet pulley and fixing seat into the cylinder to form the cylinder assembly; S3: Install the pin: Install the pad on the upper pin support and fix the upper fixing pin. Connect the upper fixing pin and the lower fixing pin through the connecting rod. Install the lower fixing pin into the upper fixing seat of the fixing seat. S4: Hoist the cylinder assembly to the installation position, align the rotating support shaft hole of the cylinder fixing plate with the rotating support seat, and insert the support shaft to form a rotating connection; S5: Pass the three steel wire ropes through the guide pulley and the rope exit pulley in sequence, and connect them to the positioning anchor; S6: Rotate the cylinder assembly to a vertical position, align the pin hole of the fixing seat with the hole of the fixing platform, remove the pad to allow the pin to fall and lock, and complete the installation.

[0014] A method for tilting the cylinder of the tiltable three-cable positioning system according to the present invention is characterized by comprising the following steps: S1: Lift the pin upwards until the lower fixing pin disengages from the fixing platform, install the pad on the upper pin support seat to fix the upper fixing pin, and unlock the vertical state lock of the cylinder assembly; S2: Connect one end of the rotating wire rope to the wire rope fixing hole of the drum fixing plate, and the other end to the auxiliary drum of the positioning winch. S3: Start the positioning winch of the secondary drum configuration, tighten the rotating wire rope, and drive the drum assembly to rotate around the support shaft; S4: When the cylinder assembly rotates to a horizontal navigation state, insert the rotating fixing pin into the rotating fixing pin hole of the cylinder fixing plate and the rotating support seat to achieve horizontal fixation.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention, through its rotatable cylindrical structure, can conveniently realize the operation mode of the three-cable positioning system during ship construction operations; and can quickly tilt the cylinder during ship navigation to minimize its impact on the ship's navigation resistance. Attached Figure Description

[0016] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a front view that mainly illustrates the working state of the three-cable positioning system of this invention; Figure 2 This is a front view of the three-cable positioning system after the cylinder has been rotated to a horizontal position. Figure 3 This is a schematic diagram illustrating the main cylindrical structure of the present invention; Figure 3A for Figure 1 Sectional view of section BB; Figure 3B for Figure 3 Sectional view of section AA; Figure 3C for Figure 3A A magnified view of a portion of the center (B-axis). Figure 3D for Figure 3 Sectional view of EE section; Figure 3E for Figure 3 Sectional view of the GG section; Figure 4 This is a schematic diagram illustrating the position of the pin when the cylinder is in a fixed state, which is the main feature of this invention. Figure 5 This is a schematic diagram illustrating the position of the pin when the cylinder is in a rotatable state, which is the main feature of this invention. Figure 5A for Figure 5 Sectional views of sections HH and II; Figure 6 This is a schematic diagram illustrating the main pin structure of the present invention; Figure 7 This is a schematic diagram illustrating the main process of cylinder rotation in this invention; Figure 8 This is a schematic diagram illustrating the rotating support structure of the present invention.

[0017] As shown in the figure: Detailed Implementation

[0018] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0019] This embodiment provides a reversible three-cable positioning system, mainly comprising: a cylindrical assembly, a hull fixing assembly, and a drive and locking assembly. The cylindrical assembly is rotatable and includes a cylindrical body 10. The cylindrical body 10 can be a long cylindrical structure with a rectangular or circular cross-section.

[0020] Three guide pulleys 8 are arranged on the top plate of the cylinder 10 to guide three positioning wire ropes 2 respectively. The three guide pulleys 8 are parallel to each other and spaced at a certain distance to ensure that the wire ropes 2 from different winches do not interfere with each other. Two axially extending cylinder fixing plates 9 are symmetrically welded to the top of the cylinder 10 for connection and rotation with the hull 18. Each cylinder fixing plate 9 has three holes: a wire rope fixing hole 91, a rotation fixing pin hole 92, and a rotation support shaft hole 93. These three holes are arranged linearly away from the central plane of symmetry of the cylinder 10. The wire rope fixing hole 91 is used for the rotational traction force of the cylinder assembly, the rotation support shaft hole 93 is used to support the rotation of the cylinder assembly, and the rotation fixing pin hole 92 is used to withstand the locking shear force. The three holes are separated to avoid structural interference.

[0021] The top of the cylinder 10 is also provided with an upper pin support 171 and a lower pin support 172 for installing the pin 6. The two are spaced a certain distance in the axial direction of the cylinder 10, and together constrain the upper fixing pin 63 of the pin 6 to prevent it from falling accidentally when not in operation. The pin 6 is mainly composed of an upper fixing pin 63, a lower fixing pin 64 and a connecting rod 66 connecting the two. The upper fixing pin 63 is provided with an upper fixing plate 61 and a lower fixing plate 62. When falling by gravity, the lower fixing plate 62 abuts against the top of the lower pin support 172 and is limited, so that the lower fixing pin 64 passes through the fixing platform 5 of the fixing seat 11 and the hull fixing assembly, realizing a reliable connection between the fixing seat 11 and the hull fixing assembly.

[0022] At the bottom of the cylinder 10, a fixing seat 11 is installed. The fixing seat 11 includes an upper fixing seat and a lower fixing seat, each with two pin holes 16. During processing, it is necessary to ensure that the two pairs of holes on the upper and lower fixing seats are aligned vertically to ensure coaxiality and to ensure that the pins 6 can be smoothly inserted and locked. In addition, three rope-discharging pulleys 12 are arranged at the bottom of the cylinder 10 (see... Figure 3EThe number of rope-exiting pulleys 12 is equal to that of the guide pulleys 8, which are used to finally guide the wire rope 2 to the positioning anchor; the rope-exiting pulleys 12 on both sides are symmetrically inclined in the opposite direction relative to the rope-exiting pulley 12 in the middle, to ensure that the three wire ropes 2 do not interfere with each other during the guiding process.

[0023] The hull fixing assembly is used to reliably install and fix the aforementioned cylinder assembly to the hull. This assembly includes a support platform 13 fixed to the outer edge of the deck of the hull 18, on which a rotating support seat 4 is fixedly connected. The rotating support seat 4 is a symmetrical structure of two plates extending horizontally, with holes on it corresponding to holes on the cylinder fixing plate 9, forming a rotating joint and a locking joint. A support shaft 3 passes through the rotating support shaft hole 93 in the rotating support seat 4 and the cylinder fixing plate 9, thus forming the pivot for the rotation of the cylinder 10. A box-shaped fixing platform 5 is also provided on the hull as a support base for the bottom of the cylinder, and it also has a pair of mating pin holes for engaging with the pin holes 16 on the fixing seat 11, allowing the lower fixing pin 64 to be inserted and locked when the cylinder assembly is switched to a vertical operating state. Simultaneously, a deck guide pulley 15 is installed on the hull deck to change the direction of the rotating wire rope 14.

[0024] The drive and locking components provide power to the system and enable switching and locking of operating states. The power source consists of three positioning winches 1 installed on the ship's deck, which provide the positioning tension required by the system; one of the winches is additionally equipped with a secondary drum. One end of each of the three steel wire ropes 2 is wound around one of the three winches, and then guided sequentially through the guide pulley 8 at the top of the drum and the exit rope pulley 12 at the bottom, before finally connecting to the positioning anchor, forming three independent positioning cables.

[0025] The drive and locking assembly includes a drive component and a locking component. The drive component is used to drive the cylinder assembly to switch between a vertical operating state and a horizontal navigation state. The locking component is used to fix the cylinder assembly when it is in the vertical operating state and to fix the cylinder assembly when it is in the horizontal navigation state.

[0026] One end of the rotating wire rope 14 is fixed to the auxiliary drum, and the other end is detachably connected to the wire rope fixing hole 91 of the drum fixing plate 9 when operation is required. The drum assembly is driven to rotate by the winch, realizing the erection and lowering of the drum. The locking function is realized by the pin 6 and the rotating fixing pin 7. The pin 6 is used to lock the bottom of the drum in the vertical state, and the rotating fixing pin 7 is used to insert into the rotating support 4 and the rotating fixing pin hole 92 of the drum fixing plate 9 after the drum 10 is tilted to the horizontal position, thereby realizing the horizontal fixation of the drum 10.

[0027] The present invention also provides an installation method for the above-mentioned reversible three-cable positioning system, the installation steps of which are as follows: S1: Install three positioning winches 1 and deck guide pulleys 15 on the deck of hull 18. Weld and fix the support platform 13, the rotating support seat 4 and the fixed platform 5.

[0028] S2: Assemble the guide pulley 8, cylinder fixing plate 9, rope outlet pulley 12 and fixing seat 11 into the cylinder 10 to form the cylinder assembly.

[0029] S3: Install pin 6 S3.1: Install a pad on the upper pin support seat 171 at the top of the cylinder 10, then install the upper fixing pin 63 of the pin 6, and use bolts to connect and fix the upper fixing plate 61 to the pad. S3.2: Connect the connecting rod 66 to the top of the lower fixing pin 64, and then install the lower fixing pin 64 into the upper fixing seat of the fixing seat 11, ensuring that the bottom of the lower fixing pin 64 does not exceed the bottom of the upper fixing seat; S3.3: Connect the top of the connecting rod 66 to the bottom of the upper fixing pin 63 to complete the vertical fixation of the pin 6.

[0030] S4: Use lifting equipment to hoist the cylinder assembly to the installation position, align the rotating support shaft hole 93 of the cylinder fixing plate 9 with the rotating support shaft hole of the rotating support seat 4, and insert the support shaft 3 for connection.

[0031] S5: Pass the three steel wire ropes 2 through the guide pulley 8 and the rope exit pulley 12 in sequence, and connect them to the positioning anchor.

[0032] S6: Slowly rotate the cylinder assembly to a vertical position so that the pin hole 16 of the bottom fixing seat 11 of the cylinder is aligned with the pin hole of the fixing platform 5 in the vertical direction.

[0033] S7: Remove the pad on the upper pin support 171 to allow the pin 6 to fall down until the lower fixing plate 62 contacts the upper end face of the lower pin support 172. At this time, the lower fixing pin 64 should pass through the pin hole 16 of the fixing platform 5 and enter the lower fixing seat of the fixing seat 11, with its bottom basically flush with the bottom of the lower fixing seat, thus completing the installation.

[0034] The cylinder 10 is fixed at two points by the support shaft 3 at the top and the pin 6 at the bottom, so that the three-cable positioning system can reliably withstand the positioning tension from all directions and achieve precise positioning when the ship is in the construction operation state.

[0035] The present invention also provides a method for tilting a cylinder for the above-mentioned positioning system. When a ship is navigating, to reduce drag, the cylinder can be tilted to a horizontal position according to the following steps: S1: Remove pin 6: S1.1: Raise the pin 6 upwards until the bottom of its lower fixing pin 64 is slightly higher than the bottom of the upper fixing seat of the fixing seat 11; S1.2: Install a pad on the upper pin support 171 and use bolts to connect and fix the upper fixing plate 61 to the pad, thereby fixing the pin 6; S2: Tilt and secure the cylinder; S2.1: Connect one end of the rotating wire rope 14 to the wire rope fixing hole 91 of the drum fixing plate 9, and connect the other end to the auxiliary drum of the positioning winch 1. S2.2: Start the positioning winch 1 equipped with a secondary drum, tighten the rotating wire rope 14, and make the drum 10 rotate around the support shaft 3; S2.3: When the cylinder 10 is rotated to a horizontal position, insert the rotating fixing pin 7 to achieve fixation. Alternatively, a slide rail can be pre-installed on the deck, and the cylinder can be slid into the ship and fixed after it is leveled.

[0036] This tilting operation method utilizes the system's built-in winch and wire rope for power, making it simple and efficient. After releasing the lock of the bottom pin 6, the cylinder assembly can be quickly switched from a vertical operating state to a horizontal navigation state using the top rotating mechanism. This minimizes wind resistance and wave impact during ship navigation, effectively improving speed and sailing economy. Simultaneously, the modular design allows the cylinder to be slid into the ship for storage when needed, enabling: convenient operation of the three-cable positioning system during ship construction work; and rapid tilting (or even dismantling) of the three-cable system during ship navigation, minimizing its impact on ship drag.

[0037] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", 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 application 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 application.

[0038] Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A top-down three-cable positioning system, characterized in that, include: Cylindrical assembly, hull fixing assembly, and drive and locking assembly; The cylindrical assembly is rotatably connected to the hull (18), and the cylindrical assembly is provided with a guide component for guiding the wire rope (2) to achieve positioning during ship operation; The hull fixing assembly is fixedly installed on the hull (18) and is used to cooperate with the cylindrical assembly to achieve rotation and fixation; The drive and locking assembly includes a drive component and a locking component. The drive component is used to drive the cylinder assembly to switch between a vertical operating state and a horizontal navigation state. The locking component is used to fix the cylinder assembly when it is in the vertical operating state and to fix the cylinder assembly when it is in the horizontal navigation state.

2. The invertible three-cable positioning system of claim 1, wherein, The guiding component includes multiple guide pulleys (8) disposed at the top of the cylinder assembly and multiple rope-out pulleys (12) disposed at the bottom; the guide pulleys (8) are arranged parallel to each other and spaced apart, and are used to guide different wire ropes (2) respectively. The number of the rope-exiting pulleys (12) is equal to that of the guide pulleys (8). The rope-exiting pulleys (12) on both sides are symmetrically inclined in opposite directions relative to the rope-exiting pulley (12) in the middle, so as to guide the wire ropes (2) to the positioning anchor without interference.

3. The invertible three-cable positioning system of claim 1, wherein, The cylindrical assembly includes a cylindrical body (10), a cylindrical body fixing plate (9) symmetrically arranged on the top of the cylindrical body (10), and a fixing seat (11) fixed to the bottom of the cylindrical body (10). The cylinder fixing plate (9) extends along the cylinder (10) axially and is provided with a wire rope fixing hole (91), a rotating fixing pin hole (92) and a rotating support shaft hole (93). The fixing seat (11) includes an upper fixing seat and a lower fixing seat, both of which have pin holes (16) and are coaxially aligned.

4. The invertible three-cable positioning system of claim 3, wherein, The top of the cylinder (10) is provided with an upper pin support seat (171) and a lower pin support seat (172), which are spaced apart along the axial direction of the cylinder (10) to constrain the pin (6) of the locking component. The pin (6) includes an upper fixing pin (63), a lower fixing pin (64) and a connecting rod (66) connecting the two. The upper fixing pin (63) is provided with an upper fixing plate (61) and a lower fixing plate (62). The lower fixing plate (62) is used to abut against the lower pin support seat (172) and limit the movement after the cylinder assembly is switched to the vertical operation state, so that the lower fixing pin (64) connects the fixing seat (11) and the hull fixing assembly.

5. The invertible three-cable positioning system of claim 3, wherein, The hull fixing components include a support platform (13), a rotating support base (4), a fixing platform (5), and a deck guide pulley (15). The support platform (13) is fixed to the outer edge of the deck of the hull (18), and the rotating support seat (4) is fixedly installed on the support platform (13). The rotating support seat (4) is connected to the rotating support shaft hole (93) of the cylinder fixing plate (9) through the support shaft (3) to form a rotating pair. The fixed platform (5) has a hole that matches the pin hole (16) of the fixed seat (11) for inserting the lower fixed pin (64) after the cylinder assembly is switched to the vertical operation state. The deck guide pulley (15) is used to change the direction of the rotating wire rope (14) of the drive component.

6. The invertible three-cable positioning system of claim 3, wherein, The driving component comprises three positioning winches (1) and a rotating wire rope (14); The positioning winch (1) is installed on the deck of the ship body (18), and one of the three positioning winches is provided with a secondary winding drum; One end of the rotating wire rope (14) is wound on the secondary winding drum, and the other end is detachably connected with the wire rope fixing hole (91) of the cylinder fixing plate (9), and is used for driving the cylinder assembly to rotate.

7. The invertible three-cable positioning system of claim 3, wherein, The locking component further comprises a rotating fixing pin (7); The rotating fixing pin (7) is used for locking the cylinder assembly in the horizontal navigation state, and is matched with the rotating fixing pin hole (92) of the cylinder fixing plate (9) and the rotating support seat (4).

8. The invertible three-cable positioning system of claim 3, wherein, The wire rope fixing hole (91) of the cylinder fixing plate (9) is used for bearing the rotating traction force of the cylinder assembly, the rotating support shaft hole (93) is used for supporting the rotation of the cylinder assembly, and the rotating fixing pin hole (92) is used for bearing the locking shear force.

9. A method of installing a downhole tri-cable positioning system according to any one of claims 1 to 8, characterized in that, The method comprises the following steps: S1: installing three positioning winches (1) and a deck guide pulley (15) on the deck of the ship body (18), and welding and fixing a support platform (13), a rotating support seat (4) and a fixed platform (5); S2: assembling a guide pulley (8), a cylinder fixing plate (9), a rope outlet pulley (12) and a fixed seat (11) to a cylinder (10) to form a cylinder assembly; S3: installing a latch (6): installing a backing plate on an upper latch support seat (171) and fixing an upper fixing pin (63), connecting the upper fixing pin (63) and a lower fixing pin (64) through a connecting rod (66), and installing the lower fixing pin (64) into an upper fixing seat of the fixed seat (11); S4: hoisting the cylinder assembly to the installation position, aligning the rotating support shaft hole (93) of the cylinder fixing plate (9) with the rotating support seat (4), and inserting a support shaft (3) to form a rotating connection; S5: passing three wire ropes (2) through the guide pulley (8) and the rope outlet pulley (12) in sequence, and connecting the wire ropes to positioning anchors; S6: rotating the cylinder assembly to a vertical state, aligning the latch hole (16) of the fixed seat (11) with the hole of the fixed platform (5), removing the backing plate to make the latch (6) fall and lock, and completing the installation.

10. A method of pouring a tub of a pourable three-cable positioning system according to any one of claims 1 to 8, characterized in that, The method comprises the following steps: S1: lifting the latch (6) upward to make the lower fixing pin (64) disengage from the fixed platform (5), installing a backing plate on the upper latch support seat (171) to fix the upper fixing pin (63), and unlocking the vertical state locking of the cylinder assembly; S2: connecting one end of the rotating wire rope (14) to the wire rope fixing hole (91) of the cylinder fixing plate (9), and connecting the other end to the secondary winding drum of the positioning winch (1); S3: starting the positioning winch (1) provided with the secondary winding drum, tightening the rotating wire rope (14), and driving the cylinder assembly to rotate around the support shaft (3); S4: when the cylinder assembly rotates to a horizontal navigation state, inserting the rotating fixing pin (7) into the rotating fixing pin hole (92) of the cylinder fixing plate (9) and the rotating support seat (4) to realize horizontal fixing.

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