Deep sea weight releasing mechanism

Abstract

The invention relates to a deep sea weight release mechanism which comprises a shell, a connecting plate, a release hook, an upper cover, a bottom cover, a lever arm and an action mechanism, the shell is tubular, the two ends of the shell are provided with a first opening and a second opening respectively, a closed mounting space is formed in the shell, the connecting plate is connected to the bottom cover, a first matching opening is formed in the connecting plate, and the connecting plate is connected to the bottom cover. The connecting plate is positioned on the outer side of the mounting space; a second matching opening is formed in the release hook, the release hook is rotationally connected to the connecting plate, the second matching opening and the first matching opening are buckled with each other, and a first inserting opening is formed in the free end of the release hook; the lever arm comprises a first arm and a second arm which are connected with each other, the joint between the first arm and the second arm is a rotating area, the rotating area is rotatably connected with the connecting plate, a second inserting opening is formed in the free end of the second arm, the first inserting opening and the second inserting opening are clamped with each other, and a set screw is arranged at the free end of the first arm. Large deep-sea equipment can be conveniently released in the deep sea.

Description

Technical Field

[0001] The invention belongs to the field of deep-sea heavy object releasing, and in particular relates to a deep-sea heavy object releasing mechanism. Background Art

[0002] In marine engineering, marine survey, marine rescue, marine salvage, etc. which are aimed at exploring the mysteries of the seabed, it is necessary to launch deep-sea landers, lay buoys, place seabed laboratories and other seabed measuring equipment on the seabed. Therefore, a deep-sea heavy object releasing mechanism was invented to launch or deploy these large deep-sea equipment. Summary of the invention

[0003] In view of this, the present invention provides a deep-sea heavy object releasing mechanism, which is convenient for releasing deep-sea large equipment in the deep sea.

[0004] The technical solution adopted by the present invention is:

[0005] A deep-sea heavy object release mechanism comprises a shell, a connecting plate, a release hook, an upper cover, a bottom cover, a lever arm and an action mechanism, wherein the shell is tubular, and the two ends of the shell are respectively a first opening and a second opening, the upper cover closes the first opening, and the bottom cover closes the second opening to form a closed installation space in the shell, the connecting plate is connected to the bottom cover, a first matching opening is provided on the connecting plate, the connecting plate is connected to the bottom cover, and the connecting plate is located outside the installation space;

[0006] The release hook is provided with a second matching opening, the release hook is rotatably connected to the connecting plate, the second matching opening is mutually buckled with the first matching opening, and the free end of the release hook is provided with a first socket; the lever arm comprises a first arm and a second arm connected to each other, the connection between the first arm and the second arm is a rotation zone, the rotation zone is rotatably connected to the connecting plate, the free end of the second arm is provided with a second socket, the first socket is mutually buckled with the second socket, and the free end of the first arm is provided with a set screw;

[0007] The action mechanism includes a motor and a thrust rod, wherein the motor is arranged in the installation space, the thrust rod passes through the bottom cover, one end of the thrust rod is connected to the motor, and the other end of the thrust rod is provided with a threaded opening, and the threaded opening is connected to the set screw. The motor drives the thrust rod to rotate to loosen the thrust rod, thereby releasing the lever arm to open the release hook.

[0008] Preferably, the action mechanism further includes a reducer, the reducer is disposed in the installation space, and the motor is connected to the thrust rod via the reducer.

[0009] Preferably, the action mechanism further includes a motor driver, and the motor driver is connected to the motor to drive the motor to rotate.

[0010] Preferably, it further comprises a main pull rod, which is arranged in the installation space, one end of the main pull rod is connected to the upper cover, and the other end of the main pull rod is connected to the bottom cover.

[0011] Preferably, the hinge point between the release hook and the connecting plate is the first rotation point, the length of the force arm between the first matching port and the first rotation point is L1, the length of the force arm between the first socket and the first rotation point is L2, the length of the second arm is L3, and the length of the first arm is L4.

[0012] L1:L2 is 15:20; L3:L4 is 17:77.5.

[0013] Beneficial effects of the present invention:

[0014] Under normal circumstances, the release hook is locked by the lever arm, and the first mating port and the second mating port form a complete circle, so that the deep-sea equipment can be hung. When the deep-sea equipment needs to be released, the motor drives the thrust rod to rotate, and the threaded port is separated from the set screw, so that the lever arm is no longer restricted. The lever arm rotates counterclockwise to release the release hook, so that the release hook can rotate clockwise, so that the first mating port and the second mating port are separated from each other, thereby releasing the deep-sea equipment and achieving the purpose of releasing the deep-sea equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and other objects, features and advantages of the present invention will become more apparent through the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

[0016] Figure 1 It is a schematic diagram of the structure of the deep-sea heavy object release mechanism;

[0017] Figure 2 is a cross-sectional view of a deep-sea weight release mechanism;

[0018] Figure 3 It is the force analysis diagram of the deep-sea heavy object release mechanism;

[0019] Figure 4 It is a schematic diagram of two deep-sea weight release mechanisms connected in parallel through flanges;

[0020] Figure 5 It is a schematic diagram of two deep-sea weight release mechanisms connected in parallel via a connecting rod 1.

[0021] In the figure: 1. housing; 2. bottom cover; 3. upper cover; 4. lever arm; 5. connecting plate; 6. release hook; 7. motor; 8. reducer; 9. thrust rod; 10. motor driver; 11. main pull rod;

[0022] 41. Set screw; 42. Rotation zone; 61. First rotation point. DETAILED DESCRIPTION

[0023] The present invention is described below based on embodiments, but the present invention is not limited to these embodiments. In the following detailed description of the present invention, some specific details are described in detail. In order to avoid confusing the essence of the present invention, known methods, processes, procedures, and components are not described in detail.

[0024] In addition, persons of ordinary skill in the art will appreciate that the drawings provided herein are for illustration purposes and are not necessarily drawn to scale.

[0025] Unless the context clearly requires otherwise, throughout the specification and claims, the words "include", "comprising" and similar words should be interpreted in an inclusive sense rather than an exclusive or exhaustive sense; that is, in the sense of "including but not limited to".

[0026] In the description of the present invention, it should be understood that the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0027] See also Figure 1-Figure 5 The present invention provides a deep-sea heavy object release mechanism, comprising a housing 1, a connecting plate 5, a release hook 6, an upper cover 3, a bottom cover 2, a lever arm 4 and an action mechanism, wherein the housing 1 is tubular, and the two ends of the housing 1 are respectively a first opening and a second opening, the upper cover 3 closes the first opening, and the bottom cover 2 closes the second opening to form a closed installation space in the housing 1, the connecting plate 5 is connected to the bottom cover 2, a first matching opening is provided on the connecting plate 5, the connecting plate 5 is connected to the bottom cover 2, and the connecting plate 5 is located outside the installation space;

[0028] The release hook 6 is provided with a second matching opening, the release hook 6 is rotatably connected to the connecting plate 5, the second matching opening is mutually buckled with the first matching opening, and the free end of the release hook 6 is provided with a first socket; the lever arm 4 includes a first arm and a second arm connected to each other, the connection between the first arm and the second arm is a rotation area 42, the rotation area 42 is rotatably connected to the connecting plate 5, the free end of the second arm is provided with a second socket, the first socket is mutually buckled with the second socket, and the free end of the first arm is provided with a set screw 41;

[0029] The action mechanism includes a motor 7 and a thrust rod 9. The motor 7 is arranged in the installation space. The thrust rod 9 passes through the bottom cover 2. One end of the thrust rod 9 is connected to the motor 7. The other end of the thrust rod 9 is provided with a threaded opening, and the threaded opening is connected to the set screw 41. The motor drives the thrust rod 9 to rotate to loosen the thrust rod 9, thereby releasing the lever arm 4 to open the release hook 6.

[0030] Preferably, the action mechanism further includes a reducer 8 , and the reducer 8 is disposed in the installation space, and the motor 7 is connected to the thrust rod 9 via the reducer 8 .

[0031] Preferably, the action mechanism further includes a motor driver 10, and the motor driver 10 is connected to the motor 7 to drive the motor 7 to rotate.

[0032] Preferably, it further comprises a main pull rod 11, which is arranged in the installation space, one end of the main pull rod 11 is connected to the upper cover 3, and the other end of the main pull rod 11 is connected to the bottom cover.

[0033] Preferably, the hinge point between the release hook 6 and the connecting plate 5 is the first rotation point 61, the arm length between the first mating opening and the first rotation point 61 is L1, the arm length between the first socket and the first rotation point 61 is L2, the length of the second arm is L3, the length of the first arm is L4,

[0034] L1:L2 is 15:20; L3:L4 is 17:77.5.

[0035] The deep-sea heavy object release mechanism is mainly composed of a bottom cover 2, an upper cover 3, a shell, a release mechanism, etc. Figure 1 shown.

[0036] The bottom cover 2 is provided with a connecting plate 5 and a release hook 6, which are mainly used to withstand a hydrostatic pressure of 41 MPa and a weight of 19.6 kN.

[0037] The upper cover 3 is provided with connectors and lifting rings, which can also withstand a hydrostatic pressure of 41 MPa and a weight of 19.6 kN.

[0038] The sealed housing provides pressure-resistant protection for the motor 7 and can withstand a hydrostatic pressure of 41 MPa.

[0039] The overall dimensions of the deep-sea heavy object release mechanism are φ130mm×514mm; the mass in air is ≤12kg, and the mass in water is ≤9.5kg.

[0040] The release mechanism uses a motor 7 to drive the pin shaft to rotate. A low-power DC motor 7 is selected as the power source, and a large reduction ratio reducer is directly connected to form a power transmission mechanism. When the motor 7 controller controls the pin shaft to rotate to a predetermined position, the hook is opened. This structure has the characteristics of fast release speed, flexible release mechanism, high action reliability, and compact structure. The motor 7 and the controller are powered with a rated voltage of 24VDC and a rated power of 48W.

[0041] The release mechanism is designed by applying the lever principle. By reducing the force of the lever, the shear force on the release pin is reduced, thereby reducing the driving power of the motor 7 and improving the reliability of the dynamic seal of the release pin.

[0042] The working process is as follows: when the upper computer issues a release signal, the motor driver 10 receives the signal and drives the motor 7 to work. The motor 7 drives the thrust rod 9 to rotate at a certain angle. The set screw 41 slides down due to the dual effects of gravity and thrust, and the thrust rod 9 is separated from the lever arm 4. Under the action of gravity, the release hook 6 is unhooked to complete the release work.

[0043] The release hook 6 bears the load tension, and the vertical downward load F1 is transmitted to the lever arm 4. F2 and F3 are the interaction forces between the release hook 6 and the lever arm 4, which makes the lever arm 4 tend to rotate counterclockwise. The thrust rod 9 blocks the movement of the screw on the lever arm 4. F4 is the force of the thrust rod 9 on the lever arm 4. See the force analysis for details. Figure 3 .

[0044] The load is calculated as 2000kg, and according to GB 150.1-150.4 "Pressure Vessels", the safety load factor is about 2.7. The gravity on the release hook 6 is F1=2000×9.8=19600N.

[0045] According to the moment balance theorem:

[0046] F1×L1=F2×L2

[0047] F3×L3=F4×L4

[0048] F2=F3

[0049] It is known that L1=15mm, L2=80mm, L3=17mm, L4=77.5mm.

[0050] Calculated:

[0051] F2=3675N

[0052] F4=806.13N

[0053] Through calculation, it can be concluded that with a safety factor of 2.7, a weight of 2000kg and a gravity of about 19600N can be converted into a force of 800N to release the device.

[0054] A single deep-sea heavy object release mechanism can be used or used in parallel. Using in parallel can unhook any release actuator and detach the suspended equipment, and can reduce the load-bearing capacity of a single release actuator, thus enhancing the reliability of the equipment during use.

[0055] Parallel use can be divided into flange connection and hanger connection.

[0056] 1) Two release actuators can be connected by flange (see Figure 4 ), the flange is connected to the upper device. The lower connecting rod 2 is customized according to the actual distance (that is, the distance between the two release mechanism support plates when the two connecting flanges are circumscribed).

[0057] 2) Two release actuators can be connected by a suspension rod (connecting rod 1) (see Figure 5 ), the connecting rod 1 is connected to the upper device. The lower connecting rod 2 is connected according to this form to determine the shoulder distance (that is, the distance between the two release mechanism support plates).

[0058] It should be understood that the above-mentioned embodiments are merely illustrative and not restrictive. Without departing from the basic principles of the present invention, various obvious or equivalent modifications or substitutions that can be made by those skilled in the art to the above-mentioned details will all be included in the scope of the claims of the present invention.

Claims

1. A deep-sea heavy object release mechanism, characterized in that: The invention comprises a housing, a connecting plate, a release hook, an upper cover, a bottom cover, a lever arm and an action mechanism, wherein the housing is tubular, and the two ends of the housing are respectively provided with a first opening and a second opening, the upper cover closes the first opening, and the bottom cover closes the second opening, so as to form a closed installation space in the housing, the connecting plate is connected to the bottom cover, a first matching opening is provided on the connecting plate, the connecting plate is connected to the bottom cover, and the connecting plate is located outside the installation space; The release hook is provided with a second matching opening, the release hook is rotatably connected to the connecting plate, the second matching opening is mutually buckled with the first matching opening, and the free end of the release hook is provided with a first socket; the lever arm comprises a first arm and a second arm connected to each other, the connection between the first arm and the second arm is a rotation zone, the rotation zone is rotatably connected to the connecting plate, the free end of the second arm is provided with a second socket, the first socket is mutually buckled with the second socket, and the free end of the first arm is provided with a set screw; The action mechanism includes a motor and a thrust rod, wherein the motor is arranged in the installation space, the thrust rod passes through the bottom cover, one end of the thrust rod is connected to the motor, and the other end of the thrust rod is provided with a threaded opening, and the threaded opening is connected to the set screw. The motor drives the thrust rod to rotate to loosen the thrust rod, thereby releasing the lever arm to open the release hook.

2. The deep-sea heavy object release mechanism according to claim 1, characterized in that: The action mechanism further includes a reducer, which is arranged in the installation space, and the motor is connected to the thrust rod via the reducer.

3. The deep-sea heavy object release mechanism according to claim 2, characterized in that: The action mechanism also includes a motor driver, which is connected to the motor to drive the motor to rotate.

4. The deep-sea heavy object release mechanism according to claim 3, characterized in that: It also includes a main pull rod, which is arranged in the installation space, one end of the main pull rod is connected to the upper cover, and the other end of the main pull rod is connected to the bottom cover.

5. The deep-sea heavy object release mechanism according to claim 4, characterized in that: The hinge point between the release hook and the connecting plate is the first rotation point, the arm length between the first matching opening and the first rotation point is L1, the arm length between the first socket and the first rotation point is L2, the length of the second arm is L3, and the length of the first arm is L4. L1:L2 is 15:20; L3:L4 is 17:77.5.

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