A monitoring device and method for a hook of an offshore vessel

Abstract

The application discloses a kind of offshore work ship hook monitoring device and method, device includes construction platform and is set on the crane boom of construction platform, still include the monitoring component of setting in the construction platform four around monitoring sea state, control platform, install laser emitter in the end of crane boom, with laser emitter cooperation monitoring hook sway laser receiver, the laser receiver is installed on the dynamic balance platform with compensating sea wave movement, and control platform controls dynamic balance platform movement to cooperate laser receiver receives laser signal, the support frame of the crane boom is equipped with mounting bracket, the dynamic balance platform is detachably connected with mounting bracket, the monitoring buoy, laser emitter, laser receiver are electrically connected with control platform respectively.The present application can monitor sea state data and the displacement of hook in current environment in real time, can be applicable to different sea area sea state, according to actual situation assess the feasibility of lifting, compared with experience more reliable.

Description

Technical Field

[0001] The present invention relates to a monitoring device and method for a hook, and in particular to a monitoring device and method for a hook of an offshore operation vessel. Background Art

[0002] With the development of marine engineering technology, humanity's utilization of marine resources has increased significantly. Offshore hoisting and construction technology has become a key technology in marine development. Currently, the vast majority of offshore construction is carried out using floating platforms or specialized engineering vessels, using fixed cranes or self-propelled crawler cranes mounted on these platforms or vessels.

[0003] Deep-sea and offshore lifting operations are characterized by complex sea conditions and unpredictable climates. Construction platform structures, under the impact of environmental loads, experience six degrees of freedom (DOF) motion. Excessive movement can cause significant inconvenience to construction. Furthermore, when a crane arm lifts a heavy object and suspends it in mid-air, the object is affected by strong winds, causing the boom to swing significantly, posing a safety hazard. Traditional offshore lifting operations rely on experienced technicians to determine whether the lifting requirements are met based on on-site conditions. This approach to assessing the feasibility of lifting relies heavily on empirical judgment. Due to the randomness of sea conditions and the limitations of human experience, this judgment is less reliable and cannot be applied to different sea areas. Summary of the Invention

[0004] Purpose of the invention: The purpose of the present invention is to provide a monitoring device and method for a hook of an offshore work vessel that can monitor sea conditions in real time and has wide applicability and high reliability.

[0005] Technical solution: The monitoring device for the hook of an offshore work vessel described in the present invention includes a construction platform and a boom arranged on the construction platform, as well as a monitoring component arranged around the construction platform for monitoring the sea conditions, a control platform, a laser transmitter installed at the end of the boom, and a laser receiver that cooperates with the laser transmitter to monitor the shaking of the hook. The laser receiver is installed on a dynamic balancing platform that can compensate for wave movement, and the control platform controls the movement of the dynamic balancing platform to cooperate with the laser receiver to receive laser signals. A mounting frame is provided on the support frame of the boom, and the dynamic balancing platform is detachably connected to the mounting frame. The monitoring buoy, laser transmitter, and laser receiver are electrically connected to the control platform respectively.

[0006] Furthermore, the monitoring component includes a buoy, the bottom end of the buoy is detachably connected to a mooring cable, and the other end of the mooring cable is connected to a lead sinker for submerging into the water.

[0007] Furthermore, a wind speed sensor is installed on the top of the buoy, a wave height meter is installed on the side of the buoy, and a current meter is installed on the bottom of the buoy. The wind speed sensor, wave height meter, and current meter are electrically connected to the control platform through an umbilical cable and transmit monitoring data to the control platform.

[0008] Furthermore, a fixed platform is provided directly below the dynamic balancing platform, and three Hooke's hinges are installed at equal intervals at the bottom end of the dynamic balancing platform and the top end of the fixed platform. The upper Hooke's hinge and the lower Hooke's hinge are staggered by 60°, and three diagonally braced telescopic cylinders are hinged between the dynamic balancing platform and the fixed platform through the Hooke's hinge.

[0009] Furthermore, inertial measurement sensors for detecting their postures are respectively installed at the bottom of the dynamic balancing platform and the hook of the boom, and the inertial measurement sensors are electrically connected to the control platform, and the control platform is electrically connected to the telescopic cylinder and controls its extension and retraction.

[0010] Furthermore, the mounting frame includes two symmetrically arranged cantilevers, one end of the cantilever is hinged with a connecting rod, the other end of the connecting rod is hinged with a first clamp, the first clamp is detachably connected to the support frame of the boom, a limiting slide is provided between the connecting rod and the cantilever, a slide groove is provided on the side of the cantilever, one end of the limiting slide extends into the slide groove and is slidably connected, and the other end of the limiting slide is hinged to the connecting rod.

[0011] Furthermore, an electric telescopic rod is provided under the cantilever, the movable end of the electric telescopic rod is hinged to the cantilever, and the fixed end of the electric telescopic rod is hinged to a second clamp, the second clamp is detachably connected to the support frame of the boom, and the second clamp is located below the first clamp, and the control platform is connected to the electric telescopic rod and controls its extension and retraction.

[0012] Furthermore, a clamping sleeve adapted to the cantilever of the mounting frame is provided at the bottom end of the fixed platform, and the clamping sleeve is detachably connected to the cantilever by bolts.

[0013] Based on the same inventive concept, the present invention also provides a method for monitoring a hook of an offshore operation vessel, comprising the following steps:

[0014] Deploy the construction platform to the designated construction location and drop buoys at equal intervals around the periphery of the construction platform;

[0015] Wind speed sensors, wave height meters, and current meters monitor sea surface wind speed, wave height, and seawater flow rate respectively, and transmit the monitored sea condition data to the control platform;

[0016] Loosen the hook of the boom, lift the boom and let the hook hang down naturally;

[0017] The electric telescopic rod is controlled through the control platform to expand the support frame even if the cantilever is in a horizontal state;

[0018] Install the fixed platform on the two cantilevers and make the laser receiver and laser transmitter on the same vertical line;

[0019] Turn on the laser transmitter and laser receiver. The laser transmitter emits laser signals while following the arm's swing. The laser receiver receives the laser signals and transmits them to the control platform to generate displacement data of the hook's swing.

[0020] When the laser transmitter and laser receiver are turned on, the inertial measurement sensor constantly monitors the posture of the dynamic balancing platform and the hook and transmits the monitored posture data to the control platform in real time. The control platform controls the telescopic cylinder based on the posture data to keep the dynamic balancing platform in a horizontal state.

[0021] The control platform evaluates the current state based on sea condition data, displacement data, and attitude data to determine whether the current state meets the lifting conditions;

[0022] After the lifting conditions are met, turn off the laser transmitter and laser receiver, store the mounting frame through the control platform, and disassemble the mounting frame and dynamic balancing platform.

[0023] Furthermore, a plurality of buoys are provided, and the plurality of buoys are arranged at equal intervals around the construction platform, and the central angle between two adjacent buoys is 45°.

[0024] Beneficial effects: Compared with the existing technology, the present invention has the following significant advantages: high reliability and applicability to different sea conditions. The present invention can monitor the sea condition data and the displacement of the hook in the current environment in real time, and evaluate the feasibility of lifting based on actual conditions, which is more reliable than experience. The displacement data monitoring of the hook has high accuracy, and when the laser transmitter is turned on, the dynamic balancing platform can offset the motion interference caused by external environment such as surging waves, so that the laser receiver can better cooperate with the laser transmitter. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the present invention.

[0026] Figure 2 It is a structural schematic diagram of the buoy of the present invention.

[0027] Figure 3 It is a partial structural diagram of the present invention.

[0028] Figure 4 It is a structural schematic diagram of the dynamic balancing platform and the hook of the present invention.

[0029] Figure 5 It is a structural schematic diagram of the cantilever and connecting rod of the present invention.

[0030] Figure 6 It is a structural schematic diagram of the dynamic balancing platform and the fixed platform of the present invention. DETAILED DESCRIPTION

[0031] The technical solution of the present invention will be further described below with reference to the accompanying drawings.

[0032] Example 1

[0033] like Figure 1-5 As shown, a monitoring device for a hook of an offshore work vessel described in the present invention includes a construction platform 1 and a boom 2 arranged on the construction platform 1, and also includes a monitoring component arranged around the construction platform 1 to monitor the sea conditions, a control platform 3, a laser transmitter 4 installed at the end of the boom 2, and a laser receiver 5 cooperating with the laser transmitter 4 to monitor the shaking of the hook. The monitoring components are provided in multiple groups, and the number of monitoring components can be selected according to specific circumstances. The multiple monitoring components are evenly spaced around the construction platform 1 to monitor the current sea conditions in real time. The laser receiver 5 is installed on a dynamic balancing platform 6 with a function of compensating for wave movement, and the control platform 3 controls the movement of the dynamic balancing platform 6 to cooperate with the laser receiver 5 to receive laser signals. A mounting frame is provided on the support frame of the boom 2, and the dynamic balancing platform 6 is detachably connected to the mounting frame. The monitoring buoy 7, the laser transmitter 4, and the laser receiver 5 are electrically connected to the control platform 3 respectively.

[0034] Specifically, the monitoring component includes a buoy 7, the bottom end of the buoy 7 is detachably connected to a mooring cable 8, and the other end of the mooring cable 8 is connected to a lead sinker 9 for submerging into the water. When in use, the buoy 7 is thrown into the sea water, and the lead sinker 9 sinks into the sea water due to its own weight, so that the buoy 7 is relatively fixed in the current position to prevent the buoy 7 from being blown away by the waves. A wind speed sensor 10 is installed on the top of the buoy 7, a wave height meter 11 is installed on the side of the buoy 7, and a current meter 12 is installed on the bottom of the buoy 7. The wind speed sensor 10, the wave height meter 11, and the current meter 12 are electrically connected to the control platform 3 through an umbilical cable and transmit the monitoring data to the control platform 3.

[0035] A fixed platform 13 is provided directly below the dynamic balancing platform 6, and three Hooke's hinges 14 are installed at equal intervals on the bottom end of the dynamic balancing platform 6 and the top end of the fixed platform 13. The upper Hooke's hinge 14 and the lower Hooke's hinge 14 are staggered by 60°. Three diagonally braced telescopic cylinders 15 are hinged between the dynamic balancing platform 6 and the fixed platform 13 through the Hooke's hinge 14, wherein the dynamic balancing platform 6 is configured as a circular plate structure. The control platform 3 will move due to the surging waves. The dynamic balancing platform 6 and the control platform 3 move synchronously, which will make the laser receiver 5 unable to receive the laser signal emitted by the laser transmitter 4, and the three telescopic cylinders 15 extend and retract, so that the Hooke's hinges 14 at both ends of the telescopic cylinders 15 rotate and deflect, thereby causing the dynamic balancing platform 6 to move accordingly to offset the wave movement and keep the dynamic balancing platform 6 in a horizontal state. In order to further accurately control the movement of the dynamic balancing platform 6, at the bottom of the dynamic balancing platform 6 and the hook of the boom 2 are respectively The inertial measurement sensor 16 is installed to detect its posture, and the inertial measurement sensor 16 is electrically connected to the control platform 3. The control platform 3 is electrically connected to the telescopic cylinder 15 and controls its extension and retraction. The inertial measurement sensor 16 can monitor the posture of the dynamic balancing platform 6 and the hook in real time and transmit it to the control platform 3 in real time, so that the platform can accurately control the telescopic cylinder 15; the wind speed sensor 10, the wave height meter 11, and the current meter 12 monitor the sea conditions in real time and transmit the sea condition data to the control platform 3. The laser receiver 5 and the laser transmitter 4 monitor the displacement of the hook in the current situation, that is, the swing amplitude of the hook, and transmit the displacement data of the hook to the control platform 3. The inertial measurement sensor 16 also transmits the posture data of the dynamic balancing platform 6 and the hook to the control platform 3. Taking into account the sea condition data, displacement data and posture data, the reliability of the lifting is evaluated based on actual data, which is more reliable than judging based on experience.

[0036] Specifically, the mounting frame includes two symmetrically arranged cantilevers 17, the bottom end of the fixed platform 13 is provided with a clamping sleeve adapted to the cantilever 17 of the mounting frame, and the clamping sleeve is detachably connected to the cantilever 17 by a bolt, one end of the cantilever 17 is hinged with a connecting rod 18, the other end of the connecting rod 18 is hinged with a first clamp 19, the first clamp 19 is detachably connected to the support frame of the boom 2, a limiting slide 20 is provided between the connecting rod 18 and the cantilever 17, a slide groove 21 is provided on the side of the cantilever 17, one end of the limiting slide 20 extends into the slide groove 21 and is slidably connected, the other end of the limiting slide 20 is hinged with the connecting rod 18, an electric telescopic rod 22 is provided below the cantilever 17, the movable end of the electric telescopic rod 22 is hinged to the cantilever 17, and the fixed end of the electric telescopic rod 22 is hinged with a second clamp 2 3. The second clamp 23 is detachably connected to the support frame of the boom 2, and the second clamp 23 is located below the first clamp 19. The control platform 3 is connected to the electric telescopic rod 22 and controls its extension and retraction, wherein the first clamp 19 and the second clamp 23 can be connected to the support frame of the boom 2 by bolts or screws, or by other detachable connection methods; when the boom is under construction or not in use, the mounting frame is in a stored state, the electric telescopic rod 22 is at an initial length, the cantilever 17 and the connecting rod 18 are folded, and when the feasibility of the hook lifting needs to be evaluated, the electric telescopic rod 22 is extended, and while the cantilever 17 is expanded outward, the limit slide 20 slides in the slide groove 21 until the limit slide 20 slides to the limit position and is locked, and the electric telescopic rod 22 continues to extend until the cantilever 17 is in a horizontal state.

[0037] Example 2

[0038] The method for monitoring a hook of an offshore work vessel according to the present invention comprises the following steps:

[0039] Deploy the construction platform 1 to the designated construction location, and throw buoys 7 at equal intervals on the periphery of the construction platform 1. The number of buoys 7 can be selected according to actual conditions. Preferably, the central angle between two adjacent buoys 7 is 45°, so that the buoys 7 can cover the wave direction range of the construction platform 1 as comprehensively as possible.

[0040] The buoy 7 floats on the sea surface, and the lead weight 9 makes the buoy 7 relatively fixed at the current position. The buoy 7 can move within a small range, but will not drift away with the waves. The wind speed sensor 10, wave height meter 11, and current meter 12 installed on the buoy 7 respectively monitor the sea surface wind speed, wave height, and sea water flow rate, and transmit the monitored sea condition data to the control platform 3.

[0041] When the sea condition data transmitted to the control platform 3 reaches the preset standard, the hook of the boom 2 can be loosened, and the boom 2 can be lifted to allow the hook to droop naturally. When the sea condition data does not reach the preset standard, it can be continuously waited until the sea condition data reaches the preset standard.

[0042] After releasing the hook, the swing amplitude of the hook in the current environment is monitored to further judge the reliability of the lifting in the current situation. First, the electric telescopic rod 22 is controlled by the control platform 3 to unfold the support frame. Even if the cantilever 17 is in a horizontal state, the cantilever 17 is unfolded outward during the extension of the electric telescopic rod 22. At the same time, the limit slide 20 slides in the slide groove 21 until the limit slide 20 slides to the limit position and is locked. The electric telescopic rod 22 continues to extend until the cantilever 17 is in a horizontal state.

[0043] Then, the ferrule of the fixed platform 13 is sleeved on the two cantilevers 17. At this time, the fixed platform 13 can be moved relative to the cantilever 17 so that the laser receiver 5 and the laser transmitter 4 are on the same vertical line. Then, the fixed platform 13 is fixed in the current position by bolts. Because the cantilever 17 is in a horizontal state, when the telescopic cylinder 15 is in the initial state, the dynamic balancing platform 6 is located directly above the fixed platform 13, that is, the dynamic balancing platform 6 is also in a horizontal state at this time.

[0044] After the dynamic balancing platform 6 is installed, the laser transmitter 4 and the laser receiver 5 are turned on. The laser transmitter 4 emits a laser signal while following the shaking of the boom 2. The laser receiver 5 receives the laser signal and transmits it to the control platform 3 to generate displacement data of the hook shaking.

[0045] In order to offset the motion interference caused by the surging waves, when the laser transmitter 4 and the laser receiver 5 are turned on, the inertial measurement sensor 16 constantly monitors the posture of the dynamic balancing platform 6 and the hook and transmits the monitored posture data to the control platform 3 in real time. The control platform 3 controls the extension and retraction of the telescopic cylinder 15 based on the posture data. The extension and retraction of the telescopic cylinder 15 causes the Hooke's hinge 14 to rotate and offset, thereby maintaining the dynamic balancing platform 6 in a dynamic horizontal state.

[0046] The control platform 3 evaluates the current state based on the sea state data, displacement data and attitude data, and determines whether the current state meets the lifting conditions;

[0047] After the lifting conditions are met, turn off the laser transmitter 4 and the laser receiver 5, and at the same time turn off the inertial measurement sensor 16, and store the mounting frame. After storing the mounting frame, you can also directly disassemble it to prevent it from affecting the normal function of the hook and avoid damaging the mounting frame and the components installed on it during construction. Disassemble the mounting frame and the dynamic balancing platform. If the lifting conditions are not met, wait until the lifting conditions are met. When storing the mounting frame, first control the telescopic cylinder 15 to retract so that the dynamic balancing platform 6 drops to the lowest height, and then control the electric telescopic rod 22 to retract it, and the cantilever 17 is rotated toward the support frame of the boom 2 for storage. As the electric telescopic rod 22 continues to shorten, the limit slide 20 slides in the opposite direction in the slide groove 21 until the cantilever 17 is stored to the initial state. The fixed platform 13 can be removed from the cantilever 17 according to actual conditions, and the buoy 7 can also be retracted according to actual conditions.

Claims

1. A monitoring device for a hook of an offshore work vessel, comprising a construction platform (1) and a boom (2) arranged on the construction platform (1), characterized in that: It also includes a monitoring component arranged around the construction platform (1) for monitoring sea conditions, a control platform (3), a laser transmitter (4) installed at the end of the boom (2), and a laser receiver (5) cooperating with the laser transmitter (4) to monitor the shaking of the hook, wherein the laser receiver (5) is installed on a dynamic balancing platform (6) capable of compensating for wave motion, and the control platform (3) controls the movement of the dynamic balancing platform (6) to cooperate with the laser receiver (5) to receive laser signals, a mounting frame is provided on the support frame of the boom (2), the dynamic balancing platform (6) is detachably connected to the mounting frame, and the monitoring component, the laser transmitter (4), and the laser receiver (5) are electrically connected to the control platform (3) respectively; A fixed platform (13) is provided directly below the dynamic balancing platform (6), and three Hooke's hinges (14) are evenly spaced apart at the bottom end of the dynamic balancing platform (6) and the top end of the fixed platform (13), with the upper Hooke's hinge (14) and the lower Hooke's hinge (14) being staggered by 60°. Three diagonally braced telescopic cylinders (15) are hinged between the dynamic balancing platform (6) and the fixed platform (13) via the Hooke's hinge (14); The bottom of the dynamic balancing platform (6) and the hook of the boom (2) are respectively installed with inertial measurement sensors (16) for detecting their postures, and the inertial measurement sensors (16) are electrically connected to the control platform (3), and the control platform (3) is electrically connected to the telescopic cylinder (15) and controls its telescopic movement; The mounting frame includes two symmetrically arranged cantilevers (17), one end of the cantilever (17) is hinged to a connecting rod (18), the other end of the connecting rod (18) is hinged to a first clamp (19), the first clamp (19) is detachably connected to the support frame of the boom (2), a limiting slide bar (20) is provided between the connecting rod (18) and the cantilever (17), a slide groove (21) is provided on the side of the cantilever (17), one end of the limiting slide bar (20) extends into the slide groove (21) and is slidably connected, and the other end of the limiting slide bar (20) is hinged to the connecting rod (18); An electric telescopic rod (22) is provided below the cantilever (17), a movable end of the electric telescopic rod (22) is hinged to the cantilever (17), a fixed end of the electric telescopic rod (22) is hinged to a second clamp (23), the second clamp (23) is detachably connected to the support frame of the boom (2), and the second clamp (23) is located below the first clamp (19), and the control platform (3) is connected to the electric telescopic rod (22) and controls its extension and retraction.

2. The monitoring device for a hook of an offshore work vessel according to claim 1, characterized in that: The monitoring assembly comprises a buoy (7), the bottom end of the buoy (7) is detachably connected to a mooring cable (8), and the other end of the mooring cable (8) is connected to a lead sinker (9) for submerging into the water bottom.

3. The monitoring device for a hook of an offshore work vessel according to claim 2, characterized in that: A wind speed sensor (10) is installed on the top of the buoy (7), a wave height meter (11) is installed on the side of the buoy (7), and a current meter (12) is installed on the bottom of the buoy (7). The wind speed sensor (10), the wave height meter (11), and the current meter (12) are electrically connected to the control platform (3) through an umbilical cable and transmit monitoring data to the control platform (3).

4. The monitoring device for a hook of an offshore work vessel according to claim 1, characterized in that: The bottom end of the fixed platform (13) is provided with a clamping sleeve adapted to the cantilever (17) of the mounting frame, and the clamping sleeve is detachably connected to the cantilever (17) via bolts.

5. A method for using the monitoring device for a hook of an offshore work vessel according to any one of claims 1 to 4, characterized in that: The following steps are involved: Deploy the construction platform (1) to the designated construction location, and drop buoys (7) at equal intervals around the periphery of the construction platform (1); The wind speed sensor (10), wave height meter (11), and current meter (12) respectively monitor the sea surface wind speed, wave height, and seawater flow rate, and transmit the monitored sea condition data to the control platform (3); Loosen the hook of the boom (2), lift the boom (2) and allow the hook to droop naturally; Controlling the electric telescopic rod (22) through the control platform (3) to unfold the support frame, even if the cantilever (17) is in a horizontal state; The fixed platform (13) is mounted on the two cantilevers (17), and the laser receiver (5) and the laser transmitter (4) are positioned on the same vertical line; Turning on the laser transmitter (4) and the laser receiver (5), the laser transmitter (4) emits a laser signal while following the shaking of the crane arm (2), and the laser receiver (5) receives the laser signal and transmits it to the control platform (3), thereby generating displacement data of the hook shaking; When the laser transmitter (4) and the laser receiver (5) are turned on, the inertial measurement sensor (16) constantly monitors the posture of the dynamic balancing platform (6) and the hook and transmits the monitored posture data to the control platform (3) in real time. The control platform (3) controls the telescopic cylinder (15) based on the posture data to keep the dynamic balancing platform (6) in a horizontal state. The control platform (3) evaluates the current state based on the sea state data, displacement data and attitude data, and determines whether the current state meets the lifting conditions; After the lifting conditions are met, the laser transmitter (4) and the laser receiver (5) are turned off, the mounting frame is stored through the control platform (3), and the mounting frame and the dynamic balancing platform (6) are disassembled.

6. The method for monitoring the hook of an offshore work vessel according to claim 5, characterized in that: A plurality of buoys (7) are provided, and the plurality of buoys (7) are arranged at equal intervals around the construction platform (1), and the central angle between two adjacent buoys (7) is 45°.

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