Turntable brake mechanism of neutrino subsurface buoy laying device and parameter design method

Abstract

The invention discloses a turntable braking mechanism of a neutrino subsurface buoy laying device, which comprises a first assembly, a second assembly, a transmission rod, a handle and a steel wire, and the first assembly and the second assembly are in mirror symmetry and are connected through the transmission rod; the first assembly comprises a first lifting table, a first elastic piece, a first brake mechanism protection plate, a first triangular connecting rod and a first connecting rod. The top of the first lifting table and the top of the second lifting table can be engaged with or disengaged from a sawtooth plate on the edge of the rotary table. The problem that an existing brake device is not suitable for ultra-deep water operation is solved, the stability of the rotating disc in the descending process of the laying device is guaranteed to a great extent, and the safety of laying operation is improved.

Description

Technical Field

[0001] The invention relates to the field of neutrino buoy deployment, and in particular to a turntable braking mechanism and a parameter design method of a neutrino buoy deployment device. Background Art

[0002] The "Hai Ling" neutrino telescope project requires the establishment of a dense detector array consisting of 1,200 detector strings in the South China Sea. During the deployment of the string, the deployment device integrates and packs 20 neutrino detection balls and transports them to the seabed. After the deployment device lands smoothly on the bottom, the turntable equipped with the neutrino detection balls rotates and rises at the same time. As each section of the cable is tightened in turn, the neutrino detection balls will also come out under the action of tension and complete the release. However, the turntable of the deployment device may rotate due to water disturbance during its descent in the seawater. In severe cases, it may even cause individual detection balls to accidentally come out or the cables to get entangled and knotted. In addition, in the process of assembling the 20 detection balls one by one on the turntable of the deployment device on land, if the turntable is not equipped with a well-structured braking device, irregular rotation will also occur, greatly increasing the difficulty of installing the detection balls, reducing the installation efficiency, and failing to ensure the quality of the detection balls installed at sea under special circumstances.

[0003] In response to the above-mentioned practical engineering problems, combined with the harsh sea conditions when the "Hai Ling" neutrino telescope project was operating in the ultra-deep water of 3,500 meters in the South China Sea, a deployment device turntable brake mechanism was designed that not only fits the structural design of the deployment device, but can withstand the large static pressure of seawater, can keep the turntable from rotating during the descent process under poor sea conditions, and can maintain high efficiency and reliability when installing the detection ball on land or at sea. It is of great significance to the advancement of the "Hai Ling" neutrino telescope project.

[0004] Therefore, technicians in this field are committed to developing a turntable brake mechanism and parameter design method for a neutrino buoy deployment device. Summary of the invention

[0005] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is:

[0006] 1. The existing brake mechanism design is mainly for land operations or shallow water operations. In the case of greater ocean water depths, the brake mechanism will face the problem of insufficient strength and weak components being easily damaged in accidental collisions.

[0007] 2. When 20 detection balls are sequentially installed into the empty spaces of the deployment device turntable on land or at sea (under special circumstances), if the rotation of the turntable is not restricted, the installation speed may be slowed down due to the rotation of the turntable, considering that the force required to unlock the clamp lock of the current empty space when installing the detection ball is large. In addition, the installation efficiency is even more difficult to guarantee in the case of shaking operations at sea. In addition, due to the instability of the turntable, the detection ball may not be installed in place. In this case, not only is the success of the deployment difficult to guarantee, but the surface glass of the detection ball may also be directly scratched, causing it to fail.

[0008] 3. During the process of the deployment device descending from the sea surface to the seabed, the turntable of the deployment device may rotate due to water disturbance. In serious cases, it may even cause individual detection balls to accidentally fall out or cables to become entangled.

[0009] To achieve the above-mentioned purpose, the present invention provides a turntable brake mechanism of a neutrino buoy deployment device, comprising a first component, a second component, a transmission rod, a handle, and a steel wire. The first component is mirror-symmetrical with the second component. The first component comprises a first lifting platform, a first elastic member, a first brake mechanism protection plate, a first triangular connecting rod and a first connecting rod. The second component comprises a second lifting platform, a second elastic member, a second brake mechanism protection plate, a second triangular connecting rod and a second connecting rod. The two ends of the transmission rod are respectively connected to the first triangular connecting rod and the second triangular connecting rod. The internal rotating structure of the handle is connected to one end of the first triangular connecting rod through the steel wire. The first triangular connecting rod can rotate around a first axis. The other end of the first triangular connecting rod is connected to one end of the first connecting rod. The other end of the first connecting rod is connected to the first lifting platform. One end of the first elastic member is fixed and the other end is connected to the first lifting platform. The tops of the first lifting platform and the second lifting platform can engage or disengage with the sawtooth plate at the edge of the turntable. The first elastic member and the second elastic member are springs. When the handle (the handle is fixed on the bottom plate frame of the deployment device, and the bottom plate frame is not shown in the figure) is rotated, the steel wire connected to the rotating structure inside the handle is tightened or loosened. When the steel wire is tightened, it drives the triangular connecting rod to rotate clockwise in the direction shown in the figure, drives the connecting rod to move downward, the spring is compressed, the lifting platform descends, and separates from the sawtooth plate on the edge of the turntable. The transmission rod drives the triangular connecting rod on the other side to rotate, so that the lifting platform on the other side also descends, and the top of the lifting platform at both ends is separated from the sawtooth plate on the edge of the turntable. When the steel wire is loosened, the springs at both ends drive the lifting platform to rise, and the top of the lifting platform at both ends engages with the sawtooth plate on the edge of the turntable.

[0010] Furthermore, the material of the turntable brake mechanism of the neutrino buoy deployment device is mainly high-strength alloy steel.

[0011] In a second aspect, the present invention further provides a parameter design method for a turntable brake mechanism based on the above-mentioned neutrino buoy deployment device, comprising steps 1-13:

[0012] Step 1: Obtain the overall design of the turntable brake mechanism, including the structure diagram and parts diagram;

[0013] Step 2: Develop a simulation model based on the overall design of the turntable brake mechanism to analyze the structural strength and other indicators of the turntable brake mechanism;

[0014] Step 3: Develop a test model based on the overall design of the turntable brake mechanism to analyze the structural strength and other indicators of the turntable brake mechanism;

[0015] Step 4: Determine the mass of the upper structure such as the turntable of the deployment device according to the actual situation;

[0016] Step 5: Determine the material used for the turntable brake mechanism;

[0017] Step 6: Determine the overall volume of the turntable brake mechanism;

[0018] Step 7: Determine the overall mass of the turntable brake mechanism;

[0019] Step 8: Determine the rigidity of the lifting platform;

[0020] Step 9: Determine the strength and stiffness of the turntable brake mechanism lifting platform connecting rod and spring;

[0021] Step 10: Determine the coordination and movement relationship between the spring and the connecting rod of the processed turntable brake mechanism during operation;

[0022] Step 11: Determine the maximum speed and acceleration of the spring and connecting rod movement and the time required to complete braking and separation when the turntable brake mechanism is in operation according to numerical simulation;

[0023] Step 12: Through the above steps, preliminarily determine the parameters of the turntable brake mechanism that meet the actual requirements, including the selection and stiffness coefficient of the spring;

[0024] Step 13: Optimize the parameters of the turntable brake mechanism according to the model test and numerical simulation results, and iterate repeatedly to continuously obtain better results.

[0025] Furthermore, the step 5 specifically includes further determining the material used for the turntable brake mechanism according to the mass of the upper structure of the deployment device determined in step 4.

[0026] Furthermore, the step 6 specifically includes determining the overall volume of the turntable brake mechanism according to the strength and stiffness requirements of the components.

[0027] Furthermore, the step 7 specifically includes determining the overall mass of the turntable brake mechanism according to the strength and stiffness requirements of the components.

[0028] Furthermore, the step 8 specifically determines the stiffness of the lifting platform according to the maximum water depth in which the deployment device is located during operation and the shape and thickness of the lifting platform of the turntable brake mechanism that is initially designed.

[0029] Furthermore, the step 9 specifically determines the strength and stiffness of the lifting platform connecting rod and the spring of the turntable brake mechanism according to the mass of the upper structure of the deployment device.

[0030] Furthermore, the step 10 specifically involves determining the coordination and movement relationship between the spring and the connecting rod of the processed turntable brake mechanism during operation through an actual mechanical structure verification test.

[0031] Furthermore, the step 11 specifically involves determining, based on numerical simulation, the maximum speed and acceleration of the spring and connecting rod movement, and the time required to complete braking and separation when the turntable brake mechanism is in operation.

[0032] Technical Effects

[0033] 1. The present invention proposes a new structural design scheme for the braking mechanism of a neutrino buoy deployment device, which overcomes the problem that the existing braking device is not suitable for ultra-deep water operations, and to a large extent ensures the stability of the turntable during the descent of the deployment device, thereby improving the safety of the deployment operation. The core components of the braking mechanism (transmission rod, connecting rod, lifting platform, protective plate) are made of high-strength pressure-resistant materials, which overcomes the problem of insufficient pressure-bearing capacity of the existing braking mechanism and further promotes the realization of the goal of safe and efficient deployment. The present invention provides a structural design scheme for the braking mechanism of a neutrino buoy deployment device, which provides a powerful reference for the deployment and implementation process of deep-sea dense neutrino detector arrays.

[0034] 2. The present invention proposes a purely mechanical turntable brake mechanism for a neutrino buoy deployment device. During the installation of the detection ball, the turntable can be turned to an empty position and then limited by the brake mechanism. After the current detection ball is installed, the brake mechanism is unlocked and turned to the next empty position until all 20 detection balls are assembled. During the installation process, the turntable always remains stable and does not rotate, which improves the fluency and stability of the installation process of the detection ball of the deployment device. When the detection ball is to be installed in the corresponding empty position of the turntable, the brake mechanism lifting platform is lifted so that its top contacts the serrated plate on the edge of the turntable of the deployment device to complete the locking of the turntable; after the current detection ball is installed and the next detection ball is ready to be installed, the brake mechanism lifting platform is lowered so that its top is separated from the serrated plate on the edge of the turntable of the deployment device. At this time, the turntable can be rotated to the next empty position. The present invention provides a high-efficiency turntable brake mechanism structural design scheme for the installation of detection balls for a neutrino buoy deployment device in the form of a waterwheel, which can effectively reduce the damage and failure of the detection ball caused by the free rotation of the turntable, and improve the efficiency and safety of the installation operation.

[0035] 3. How to deal with water disturbance during the descent of the deployment device is a key link in the entire deployment process. The present invention introduces a turntable brake mechanism to ensure that the turntable does not rotate freely during the descent, without interference in the deployment operation, thereby promoting the successful execution of the entire deployment operation. A purely mechanical turntable brake mechanism design for a deployment device is provided, which is easy to operate and highly reliable. The turntable can be kept in a fixed state during the descent of the deployment device, and can rotate freely when the detection ball begins to be released. It provides a more reliable means for the deployment of neutrino buoy series, and combined with a purely mechanical brake structure, it can greatly ensure the success of the deployment operation.

[0036] The concept, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings to fully understand the purpose, characteristics and effects of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of a turntable brake mechanism of a neutrino buoy deployment device of the present invention;

[0038] Figure 2 It is a schematic diagram of the braking state of the turntable braking mechanism of a neutrino buoy deployment device of the present invention (one side);

[0039] Figure 3 It is a schematic diagram of the unlocked state of the turntable brake mechanism of a neutrino buoy deployment device of the present invention (one side);

[0040] Figure 4 The present invention is a flow chart of a method for optimizing the parameters of a turntable brake mechanism of a neutrino buoy deployment device. DETAILED DESCRIPTION

[0041] The following describes several preferred embodiments of the present invention with reference to the drawings in the specification, so that the technical content is clearer and easier to understand. The present invention can be embodied in many different forms of embodiments, and the protection scope of the present invention is not limited to the embodiments mentioned in the text.

[0042] In the drawings, components with the same structure are indicated by the same numerical reference numerals, and components with similar structures or functions are indicated by similar numerical reference numerals. The size and thickness of each component shown in the drawings are arbitrarily shown, and the present invention does not limit the size and thickness of each component. In order to make the illustration clearer, the thickness of the components is appropriately exaggerated in some places in the drawings.

[0043] Embodiment 1

[0044] like Figure 1As shown, a turntable brake mechanism of a neutrino buoy deployment device of the present invention includes a first component, a second component, a transmission rod 5, a handle 8 and a steel wire. The first component is mirror-symmetrical with the second component and is connected through the transmission rod 5. The first component includes a lifting platform 2, a spring 3, a brake mechanism protection plate 4 and a triangular connecting rod 6 and a connecting rod 7. The handle 8 is connected to the triangular connecting rod 6 of the first component through a steel wire, and the top of the lifting platform 2 can engage with the serrated plate 1 at the edge of the turntable.

[0045] The turntable brake mechanism is directly fixed to the bottom plate frame of the neutrino buoy deployment device. The turntable needs to be fixed when installing the detection ball or resisting seawater disturbance. At this time, the brake mechanism lifting platform is in contact with the serrated plate on the edge of the turntable; when switching the installation position of the detection ball or preparing to start the deployment operation on the seabed, the turntable needs to be unlocked. At this time, the brake mechanism lifting platform is separated from the serrated plate on the edge of the turntable.

[0046] When installing the detection ball into the turntable on land or at sea, first make the top of the lifting platform fit with the sawtooth plate 1 on the edge of the turntable, and fix the turntable. When installing the detection ball at the next position, pull the handle clockwise in the direction shown in the figure (the handle is fixed on the bottom plate frame of the deployment device, and the bottom plate frame is not shown in the figure). The steel wire connected to the internal rotating structure of the handle is pulled and tightened to the upper left, driving the triangular connecting rod to rotate clockwise in the direction shown in the figure, driving the connecting rod to move downward, the spring is compressed, and the lifting platform descends and separates from the sawtooth plate on the edge of the turntable. The transmission rod drives the triangular connecting rod on the other side to rotate, so that the lifting platform on the other side also descends. At this time, the brake mechanism is in the unlocked state. After rotating to the next detection ball installation position, the handle can be pulled counterclockwise to complete the locking of the brake mechanism. Repeating this step repeatedly can achieve stable and efficient installation of multiple detection balls (in case of severe sea conditions, the brake mechanism needs to be locked in advance. After the entire deployment device is transported to the seabed, the ROV manipulator can be operated to unlock the brake mechanism and prepare to start the deployment operation).

[0047] The first component and the second component are located on the left and right sides of the turntable respectively, and the two are arranged in a mirror-symmetrical manner. The structure of the first component is as follows: Figure 2 As shown. In the braking state, the brake mechanism is in a self-locking state, the connecting rod and two springs provide upward support for the lifting platform, and the top of the lifting platform fits with the sawtooth plate on the edge of the turntable. At this time, the turntable of the deployment device is fixed and cannot rotate freely. Pull the handle clockwise (use the ROV manipulator to pull the handle clockwise on the seabed) to make the triangular connecting rods on both sides rotate clockwise synchronously, the top of the lifting platform is separated from the sawtooth plate on the edge of the turntable, and the brake mechanism enters the unlocked state.

[0048] like Figure 3As shown in the figure, in the unlocked state, the connecting rod moves downward, the two springs are compressed, and the lifting platform moves downward, and the top of the lifting platform is separated from the sawtooth plate on the edge of the turntable. At this time, the turntable of the deployment device is not fixed and can rotate freely. Pulling the handle counterclockwise can make the triangular connecting rods of the brake mechanism on both sides rotate counterclockwise synchronously, the top of the lifting platform fits with the sawtooth plate on the edge of the turntable, and the brake mechanism enters the braking state.

[0049] Embodiment 2

[0050] like Figure 4 As shown, a method for designing parameters of a turntable brake mechanism of a neutrino buoy deployment device of the present invention comprises the following steps:

[0051] Step 1: Obtain the overall design plan of the turntable brake mechanism, including structural drawings, parts drawings, etc.

[0052] Steps 2 and 3: Develop a simulation model or test model based on the design drawings to analyze the structural strength and other indicators of the turntable brake mechanism.

[0053] Step 4: Determine the quality of the upper structure such as the turntable of the deployment device based on actual conditions.

[0054] Step 5: Based on the mass of the superstructure of the deployment device determined in step 4, further determine the material used for the turntable brake mechanism (mainly high-strength alloy steel).

[0055] Steps 6 and 7: Further determine the overall volume and mass of the turntable brake mechanism based on component strength and stiffness requirements.

[0056] Step 8: Determine the rigidity of the lifting platform according to the maximum water depth where the deployment device is located during operation and the shape and thickness of the preliminary designed turntable brake mechanism lifting platform.

[0057] Step 9: Determine the strength and stiffness of the turntable brake mechanism lifting platform connecting rod and spring based on the mass of the superstructure of the deployment device.

[0058] Step 10: Through actual mechanical structure verification tests, determine the coordination and movement relationship between the spring and the connecting rod of the processed turntable brake mechanism during operation.

[0059] Step 11: Determine the maximum speed and acceleration of the spring and connecting rod movement, as well as the time required to complete braking and separation when the turntable brake mechanism is in operation based on numerical simulation.

[0060] Step 12: Through the above steps, preliminarily determine the parameters of the turntable brake mechanism that meet the actual requirements (including the selection and stiffness coefficient of the spring).

[0061] Step 13: Optimize the parameters of the turntable brake mechanism according to the model test and numerical simulation results, and iterate repeatedly to continuously obtain better results.

[0062] Step 14: Through model tests and numerical simulations, the performance indicators (such as strength) and functional realization of the turntable brake mechanism after iterative optimization design are checked and verified.

[0063] The preferred specific embodiments of the present invention are described in detail above. It should be understood that ordinary technicians in the field can make many modifications and changes based on the concept of the present invention without creative work. Therefore, all technical solutions that can be obtained by technicians in the technical field based on the concept of the present invention through logical analysis, reasoning or limited experiments on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A turntable brake mechanism for a neutrino buoy deployment device, characterized in that: The invention comprises a first component, a second component, a transmission rod, a handle and a steel wire. The first component is mirror-symmetrical with the second component. The first component comprises a first lifting platform, a first elastic member, a first brake mechanism protection plate, a first triangular connecting rod and a first connecting rod. The second component comprises a second lifting platform, a second elastic member, a second brake mechanism protection plate, a second triangular connecting rod and a second connecting rod. The two ends of the transmission rod are respectively connected to the first triangular connecting rod and the second triangular connecting rod. The internal rotating structure of the handle is connected to one end of the first triangular connecting rod through the steel wire. The first triangular connecting rod can rotate around a first axis. The other end of the first triangular connecting rod is connected to one end of the first connecting rod. The other end of the first connecting rod is connected to the first lifting platform. One end of the first elastic member is fixed and the other end is connected to the first lifting platform. The tops of the first lifting platform and the second lifting platform can engage or disengage with the sawtooth plate at the edge of the turntable. The first elastic member and the second elastic member are springs.

2. The turntable brake mechanism of the neutrino buoy deployment device according to claim 1, characterized in that: The material of the turntable brake mechanism of the neutrino buoy deployment device is mainly high-strength alloy steel.

3. A parameter design method for the turntable brake mechanism of the neutrino buoy deployment device according to claim 1, characterized in that: Includes steps 1-13: Step 1: Obtain the overall design of the turntable brake mechanism, including the structure diagram and parts diagram; Step 2: Develop a simulation model based on the overall design of the turntable brake mechanism to analyze the structural strength and other indicators of the turntable brake mechanism; Step 3: Develop a test model based on the overall design of the turntable brake mechanism to analyze the structural strength and other indicators of the turntable brake mechanism; Step 4: Determine the mass of the upper structure such as the turntable of the deployment device according to the actual situation; Step 5: Determine the material used for the turntable brake mechanism; Step 6: Determine the overall volume of the turntable brake mechanism; Step 7: Determine the overall mass of the turntable brake mechanism; Step 8: Determine the rigidity of the lifting platform; Step 9: Determine the strength and stiffness of the turntable brake mechanism lifting platform connecting rod and spring; Step 10: Determine the coordination and movement relationship between the spring and the connecting rod of the processed turntable brake mechanism during operation; Step 11: Determine the maximum speed and acceleration of the spring and connecting rod movement and the time required to complete braking and separation when the turntable brake mechanism is in operation according to numerical simulation; Step 12: Through the above steps, preliminarily determine the parameters of the turntable brake mechanism that meet the actual requirements, including the selection and stiffness coefficient of the spring; Step 13: Optimize the parameters of the turntable brake mechanism according to the model test and numerical simulation results, and iterate repeatedly to continuously obtain better results.

4. The parameter design method according to claim 3, characterized in that: The step 5 specifically includes further determining the material used for the turntable brake mechanism according to the mass of the upper structure of the deployment device determined in step 4.

5. The parameter design method according to claim 3, characterized in that: The step 6 specifically includes determining the overall volume of the turntable brake mechanism according to the strength and stiffness requirements of the components.

6. The parameter design method according to claim 3, characterized in that: The step 7 specifically includes determining the overall mass of the turntable brake mechanism according to the component strength and stiffness requirements.

7. The parameter design method according to claim 3, characterized in that: The step 8 specifically includes determining the rigidity of the lifting platform according to the maximum water depth at which the deployment device is located during operation and the shape and thickness of the lifting platform of the turntable brake mechanism that is initially designed.

8. The parameter design method according to claim 3, characterized in that: The step 9 specifically includes determining the strength and stiffness of the lifting platform connecting rod and the spring of the turntable brake mechanism according to the mass of the upper structure of the deployment device.

9. The parameter design method according to claim 3, characterized in that: The step 10 specifically involves determining the coordination and movement relationship between the spring and the connecting rod of the processed turntable brake mechanism during operation through an actual mechanical structure verification test.

10. The parameter design method according to claim 3, characterized in that: The step 11 specifically involves determining, based on numerical simulation, the maximum speed and acceleration of the spring and connecting rod movement, as well as the time required to complete braking and separation when the turntable brake mechanism is in operation.

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