An underwater multi-stage dumping device

Abstract

The present invention discloses an underwater multi-stage jettisoning device, which relates to the technical field of underwater systems or equipment. It solves the problems of low reliability and stability of current jettisoning devices, inability of single jettisoning to meet mission requirements, and large space occupation of multi-stage jettisoning release mechanisms. The technical key points of the present invention include: a jettisoning release mechanism and a multi-stage jettisoning section, the multi-stage jettisoning section being from the inside to the outside and / or from the top to the bottom, and being assembled in sequence below the jettisoning release mechanism; the jettisoning release mechanism is composed of a jettisoning fixing frame, a driving motor, a crank slider structure, and a latch rod, the driving motor being installed on the jettisoning fixing frame, and the jettisoning sections from the Nth stage to the first stage are hung on the latch rod from the inside to the outside through the corresponding hanging ears of each stage, and driven by the driving motor, the two latch rods are synchronously pulled to slide, and the first to Nth stage jettisoning sections are released in sequence. The device can realize a multi-stage operation mode of first floating and then floating up, takes up little space, and has high reliability.

Description

Technical Field

[0001] The present invention relates to the technical field of underwater systems or equipment, and in particular to an underwater multi-stage load-releasing device. Background Art

[0002] As society continues to develop, land resources are constantly being depleted, and some non-renewable resources are in urgent need of replenishment. This has led people to turn their attention to the ocean. Underwater systems and equipment, as crucial tools for understanding and developing the ocean, have garnered widespread attention. Underwater systems are capable of performing diverse operations, including diving, levitation, observation, operations, and surfacing for recovery. The jettisoning devices onboard underwater systems adjust the overall buoyancy of unmanned systems by jettisoning heavy objects, making them a crucial means of achieving diving, levitation, and surfacing for recovery.

[0003] Currently, common jettisoning methods rely primarily on electromagnetic control technology. Electromagnetic attraction is used to secure the jettisoned load, and when the attraction disappears, the load is released. A drawback of this technology is that when gaps form in the connection, the attraction drops significantly, resulting in poor stability and reliability of the jettisoning device. Alternatively, there's the fuse-type jettisoning method. When the jettisoning conditions are met, a high current is instantaneously generated to melt the fuse, achieving structural separation and jettisoning. This method places high demands on the heat generated by the current. During the system's descent, if debris adheres to the fuse's surface, it may affect current generation, resulting in insufficient heat to melt the fuse. Furthermore, due to space limitations in underwater systems, existing jettisoning methods are mostly single-shot, unable to meet the requirements of a multi-stage, gradual adjustment of the system's buoyancy, requiring initial levitation followed by surfacing and recovery. Summary of the Invention

[0004] In response to the above-mentioned problems that the current jettisoning device has low reliability and stability, a single jettisoning cannot meet the mission requirements, and the multi-stage jettisoning release mechanism takes up a large space, the purpose of the present invention is to provide an underwater multi-stage jettisoning device.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] An underwater multi-stage load-dumping device comprises: a load-dumping release mechanism and a multi-stage load-dumping section, wherein the multi-stage load-dumping section is coaxially arranged and assembled below the load-dumping release mechanism in sequence from inside to outside and / or from top to bottom; the total number of the multi-stage load-dumping sections is represented by N, where N is an integer not less than 2; the load-dumping section located at the outermost and / or lowermost side is a first-stage load-dumping section, and the load-dumping section located at the innermost and / or uppermost side is an Nth-stage load-dumping section; the first-stage load-dumping section to the Nth-stage load-dumping section are arranged in sequence from outside to inside and / or from bottom to top; when N is 3 or greater, the second-stage load-dumping section, the third-stage load-dumping section, etc. are sequentially arranged between the first-stage load-dumping section and the Nth-stage load-dumping section;

[0007] The load-jetting release mechanism includes: a load-jetting device mounting frame, a motor support frame, a drive motor, a crank-connecting rod mechanism, and a latch rod. The drive motor is mounted in the middle of the load-jetting device mounting frame through the motor support frame. Two main limit channels are symmetrically arranged on the load-jetting device mounting frame. A plurality of load-jetting limit holes are sequentially opened at the bottom of each main limit channel from the inside to the outside. A latch rod is slidably installed in each main limit channel. Both latch rods are connected to the output end of the drive motor through the crank-connecting rod mechanism.

[0008] There are two hanging ears on the first-stage dumping section. The multi-stage dumping sections are symmetrically arranged on the left and right. Each hanging ear of the first-stage dumping section passes through a dumping limit hole of a main limit channel from bottom to top and is hung on a latch rod;

[0009] The two hanging ears of the multi-stage load-releasing section arranged from inside to outside and / or from top to bottom are sequentially inserted into the multiple load-releasing limit holes at the bottom of the two main limit channels from inside to outside. The driving motor is used to drive the two latch rods to slide synchronously in the two main limit channels to release the first-stage load-releasing section, the second-stage load-releasing section...the N-stage load-releasing section of the multi-stage load-releasing section in sequence.

[0010] The above-mentioned underwater multi-stage load-releasing device, wherein the load-releasing release mechanism also includes: a second pin shaft with a hole and a first pin shaft with a hole, and the crank-connecting rod mechanism includes: a crank and two connecting rods, the middle part of the crank is connected to the output end of the drive motor, one end of each connecting rod is rotatably connected to one end of the crank through a second pin shaft with a hole, and the other end of each connecting rod is rotatably connected to one end of a pin rod through a first pin shaft with a hole.

[0011] The underwater multi-stage load-releasing device mentioned above, wherein the load-releasing release mechanism further comprises: a ball, wherein the top and bottom surfaces of each latch rod are provided with at least one row of grooves, and at least one rollable ball is installed in each row of grooves;

[0012] The load-releasing mechanism further comprises a latch rod plug. The other end of each latch rod is connected to a latch rod plug. The latch rod plug is used to limit the balls in the multiple rows of grooves.

[0013] The above-mentioned underwater multi-stage load-releasing device, wherein the first-stage load-releasing section includes a first-stage load, and two first hanging ears are symmetrically arranged on the upper surface of the first-stage load-releasing section, each of which is placed in a load-releasing limit hole, and the first-stage load-releasing section is assembled on the load-releasing release mechanism through the two first hanging ears.

[0014] The above-mentioned underwater multi-stage dumping device, wherein the first-stage dumping section also includes: a bottom plate, the first-stage dumping is in the shape of an inverted boss, a cylindrical through hole is provided inside it, and the bottom surface of the first-stage dumping is connected to the bottom plate.

[0015] The above-mentioned underwater multi-stage load-releasing device, wherein the N-stage load-releasing section includes the N-stage load, and two N-stage hanging ears are symmetrically arranged on the upper surface of the N-stage load-releasing section, each of which is placed in a load-releasing limit hole, and the N-stage load-releasing section is assembled on the load-releasing release mechanism through the two N-stage hanging ears.

[0016] The above-mentioned underwater multi-stage dumping device, wherein, see Figures 1 to 9 As shown, the underwater multi-stage load-rejecting device is an underwater two-stage load-rejecting device, that is, N=2, and the second-stage load-rejecting section is cylindrical as a whole. The second-stage load-rejecting section also includes: an upper deck and a skirt. Two first limiting holes and two second limiting holes are provided on the upper deck. Two second hanging ears are respectively placed in the two second limiting holes. The second-stage load is the Nth-stage load 7. The top surface of the second-stage load is connected to the bottom surface of the upper deck. The skirt is provided on the outer periphery of the second-stage load. The second-stage load is welded by square tubes. The top surface of the skirt is connected to the bottom surface of the upper deck.

[0017] The above-mentioned underwater multi-stage dumping device, wherein the underwater multi-stage dumping device is an underwater N-stage dumping device, the N-stage dumping section is cylindrical as a whole, and the N-stage dumping section further includes: an upper deck 8 and a skirt 9, 2×(N-1) first limiting holes and two second limiting holes are opened on the upper deck 8, each N-th hanging ear is placed in a second limiting hole, the top surface of the N-stage dumping 7 is connected to the bottom surface of the upper deck 8, the skirt 9 is provided on the outer periphery of the N-stage dumping 7, the N-stage dumping 7 is welded by a square tube, and the top surface of the skirt 9 is connected to the bottom surface of the upper deck 8;

[0018] A hanging ear of any first-stage load-shedding section from the first-stage load-shedding section to the N-1-stage load-shedding section passes through a first limiting hole.

[0019] The above-mentioned underwater multi-stage jettisoning device, wherein the first to Nth stage jettisoning stages are all assembled on the jettisoning release mechanism, the Nth stage jettisoning stage is arranged below the jettisoning release mechanism and within the N-1th stage jettisoning stage, and the first stage jettisoning stage at the lowest end is arranged outside the second stage jettisoning stage and below the second stage jettisoning stage; each main limit channel is provided with N jettisoning limit holes at the bottom;

[0020] The first-stage load-releasing section is provided with two first hanging ears, each of which is inserted into a load-releasing hole from bottom to top. Each first hanging ear is provided with a first hanging hole for inserting a latch rod. The first-stage load-releasing section is assembled on the load-releasing release mechanism through the two first hanging ears.

[0021] The second-stage load-releasing section is provided with two second hanging ears, each of which is inserted into a load-releasing limit hole from bottom to top. Each second hanging ear is provided with a second hanging hole for inserting a latch rod. The second-stage load-releasing section is assembled on the load-releasing release mechanism through the two second hanging ears.

[0022] …

[0023] Two Nth hanging ears are provided on the Nth level load-releasing section, and each Nth hanging ear is inserted into a load-releasing limit hole from bottom to top. Each Nth hanging ear is provided with an Nth hanging hole for inserting a latch rod. The Nth level load-releasing section is assembled on the load-releasing release mechanism through the two Nth hanging ears.

[0024] In the present invention, the use of multi-stage load-dumping technology not only improves the diving depth capability of the submersible, but also optimizes the controllability and safety of its diving process, providing a more reliable and efficient tool for deep-sea exploration and research.

[0025] First, through multi-stage ballast jettisoning, the submersible gradually releases ballast, enabling a progressively deeper dive. This method allows the submersible to reduce its weight in stages before reaching the desired depth, effectively avoiding the rapid sinking and potential instability that could result from releasing a large amount of ballast all at once. After each stage of ballast jettisoning, the submersible can adjust its attitude at the new equilibrium point, ensuring a stable and controlled dive to ever-deeper depths.

[0026] Secondly, multi-stage load jettisoning also enables precise control of the submersible's descent speed. By adjusting the weight and timing of each stage of load jettisoning, the submersible's descent speed can be precisely controlled, ensuring that the vehicle maintains an ideal, stable, manageable, and monitorable speed range throughout the dive, allowing the submersible to better observe or record its surroundings.

[0027] In addition, the use of multi-stage load jettisoning enhances the submersible's emergency response capabilities. In emergency situations, such as encountering an unexpected obstacle or requiring immediate ascent, the submersible can quickly execute the remaining load jettisoning maneuvers to minimize its descent depth and increase its buoyancy, ensuring a safe return to the surface.

[0028] The present invention is described using an underwater two-stage jettisoning device, which includes a jettisoning release mechanism, a second-stage jettisoning section, and a first-stage jettisoning section. The jettisoning release mechanism comprises a jettisoning mount, a drive motor, a crank slider structure, and a latch rod. The drive motor is mounted on the jettisoning mount. The second-stage jettisoning section is hung on the latch rod of the jettisoning release mechanism via a second hanging ear and is located below the jettisoning mount. The first-stage jettisoning section is hung on the latch rod of the jettisoning release mechanism via a first hanging ear and is located below the second-stage jettisoning section. The drive motor drives the two latch rods to slide synchronously, releasing the first-stage jettisoning section and the second-stage jettisoning section in sequence.

[0029] The multi-stage dumping device realizes two-stage dumping through a set of release mechanisms. The system discards the first-stage dumping load to achieve suspension in the water. When it needs to float, the second-stage dumping load is discarded, enabling the equipment to achieve a multi-stage operation mode of first floating and then floating, with small space occupation and high reliability.

[0030] Due to the adoption of the above technology, the present invention has the following positive effects compared with the prior art:

[0031] (1) The present invention uses a single drive motor to drive a bidirectional crank slider mechanism, which can save space. The crank slider mechanism converts the rotation of the drive motor into horizontal linear motion of the latch rod, and then controls the release of the load through the displacement of the latch rod, thereby achieving multi-stage load throwing. Compared with electromagnetic load throwing devices and fuse-type load throwing devices, it has higher reliability and stability. The balls installed on the upper and lower surfaces of the latch rod can reduce the friction resistance during the movement of the latch rod, that is, reduce the motor load and save energy.

[0032] (2) The present invention is provided with an N-stage dumping section including an N-stage dumping load, an upper deck and a skirt. The N-stage hanging lug passes through the second limiting hole of the upper deck and the dumping limiting hole of the dumping device mounting frame to limit the horizontal movement of the N-stage dumping load and enhance stability. The skirt and the upper deck are welded to the N-stage dumping load, so that the N-stage dumping load section is cylindrical, thereby reducing the diving resistance and preventing suspended matter or sediment from entering the square tube.

[0033] (3) The present invention is provided with a first-stage dumping section including a first-stage dumping load and a bottom plate. The first-stage dumping load is a convex concrete block with a circular through hole in the center, which can reduce the resistance during the diving process; the upper end of the first hanging ear passes through the first limiting hole of the upper deck and the dumping load limiting hole of the dumping device mounting frame to prevent the first-stage dumping load from moving in the horizontal direction and enhance stability. The bottom plate is installed at the bottom of the first-stage dumping load to prevent large suspended matter in the water from entering from the bottom. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is an embodiment diagram of an underwater two-stage load-discharging device designed using an underwater multi-stage load-discharging device of the present invention.

[0035] Figure 2 yes Figure 1 Schematic diagram of the main cross-section structure of the underwater secondary load-releasing device.

[0036] Figure 3 yes Figure 1 Schematic diagram of the overhead structure of the underwater secondary load-releasing device.

[0037] Figure 4 yes Figure 1 Schematic diagram of the side structure of the underwater secondary load-releasing device.

[0038] Figure 5 yes Figure 1 Schematic diagram of the underwater secondary load-releasing device.

[0039] Figure 6 yes Figure 1Schematic diagram of the structure of the second-stage load-releasing device in the underwater secondary load-releasing device.

[0040] Figure 7 yes Figure 1 Schematic diagram of the structure of the first-stage load-releasing section of the underwater two-stage load-releasing device.

[0041] Figure 8 yes Figure 1 Schematic diagram of the structure of the pin rod of the underwater secondary load-releasing device.

[0042] Figure 9 yes Figure 1 Schematic diagram of the structure of the second-stage load dumping device in the underwater secondary load dumping device.

[0043] In the attached figure: 1. Load jettisoning device mounting frame; 2. Motor support frame; 3. Drive motor; 4. Crank; 5. Connecting rod; 6. Latch rod; 7. Nth stage load jettisoning; 8. Upper deck; 9. Skirt; 10. First hanging ear; 11. First stage load jettisoning; 12. Bottom plate; 13. Ball bearing; 14. Latch rod plug; 16. First pin shaft with hole; 17. Second pin shaft with hole. DETAILED DESCRIPTION

[0044] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0045] Please refer to Figures 1 to 9 The figure shows an underwater two-stage jettisoning device designed using an underwater multi-stage jettisoning device of the present invention. That is, when N=2, the first-stage jettisoning section and the second-stage jettisoning section are both assembled on the jettisoning release mechanism. The second-stage jettisoning section is located below the jettisoning release mechanism and within the first-stage jettisoning section. The first-stage jettisoning section is located below the second-stage jettisoning section. Two jettisoning limit holes are provided at the bottom of each main limit channel.

[0046] The first-stage load-releasing section is provided with two first hanging ears 10, each of which is inserted into a load-releasing hole from bottom to top. Each first hanging ear 10 is provided with a first hanging hole for inserting the latch rod 6. The first-stage load-releasing section is assembled on the load-releasing release mechanism through the two first hanging ears 10;

[0047] Two second hanging ears are provided on the second-stage dumping section, and each second hanging ear is inserted into a dumping limit hole from bottom to top. Each second hanging ear is provided with a second hanging hole for inserting the latch rod 6. The second-stage dumping section is assembled on the dumping release mechanism through the two second hanging ears.

[0048] Furthermore, in a preferred embodiment, the underwater multi-stage jettisoning device is an underwater three-stage jettisoning device, that is, when N=3, a second-stage jettisoning section is provided between the first-stage jettisoning section and the third-stage jettisoning section, the first-stage jettisoning section, the second-stage jettisoning section and the third-stage jettisoning section are all assembled on a jettisoning release mechanism, the third-stage jettisoning section is provided below the jettisoning release mechanism and inside the second-stage jettisoning section, the first-stage jettisoning section is provided outside the second-stage jettisoning section and below the second-stage jettisoning section; three jettisoning limit holes are provided at the bottom of each main limit channel;

[0049] The first-stage load-releasing section is provided with two first hanging ears 10, each of which is inserted into a load-releasing hole from bottom to top. Each first hanging ear 10 is provided with a first hanging hole for inserting the latch rod 6. The first-stage load-releasing section is assembled on the load-releasing release mechanism through the two first hanging ears 10;

[0050] The second-stage load-releasing section is provided with two second hanging ears, each of which is inserted into a load-releasing limit hole from bottom to top. Each second hanging ear is provided with a second hanging hole for inserting the latch rod 6. The second-stage load-releasing section is assembled on the load-releasing release mechanism through the two second hanging ears.

[0051] The third-stage load-releasing section is provided with two third hanging ears, each of which is inserted into a load-releasing limit hole from bottom to top. Each third hanging ear is provided with a third hanging hole for inserting the latch rod 6. The third-stage load-releasing section is assembled on the load-releasing release mechanism through the two third hanging ears.

[0052] Alternatively, the underwater multi-stage jettisoning device is an underwater four-stage jettisoning device, that is, when N=4, a second-stage jettisoning section and a third-stage jettisoning section are arranged between the first-stage jettisoning section and the fourth-stage jettisoning section, the first-stage jettisoning section, the second-stage jettisoning section, the third-stage jettisoning section and the fourth-stage jettisoning section are all assembled on the jettisoning release mechanism, the fourth-stage jettisoning section is arranged below the jettisoning release mechanism and inside the third-stage jettisoning section, the second-stage jettisoning section is arranged outside the third-stage jettisoning section and below the third-stage jettisoning section, and the first-stage jettisoning section is arranged outside the second-stage jettisoning section and below the second-stage jettisoning section; four jettisoning limit holes are opened at the bottom of each main limit channel;

[0053] The first-stage load-releasing section is provided with two first hanging ears 10, each of which is inserted into a load-releasing hole from bottom to top. Each first hanging ear 10 is provided with a first hanging hole for inserting the latch rod 6. The first-stage load-releasing section is assembled on the load-releasing release mechanism through the two first hanging ears 10;

[0054] The second-stage load-releasing section is provided with two second hanging ears, each of which is inserted into a load-releasing limit hole from bottom to top. Each second hanging ear is provided with a second hanging hole for inserting the latch rod 6. The second-stage load-releasing section is assembled on the load-releasing release mechanism through the two second hanging ears.

[0055] The third-stage load-releasing section is provided with two third hanging ears, each of which is inserted into a load-releasing limit hole from bottom to top. Each third hanging ear is provided with a third hanging hole for inserting the latch rod 6. The third-stage load-releasing section is assembled on the load-releasing release mechanism through the two third hanging ears.

[0056] Two fourth hanging ears are provided on the fourth-level loading jettisoning section, and each fourth hanging ear is inserted into a loading jettisoning limit hole from bottom to top. Each fourth hanging ear is provided with a fourth hanging hole for inserting the latch rod 6. The fourth-level loading jettisoning section is assembled on the loading jettisoning release mechanism through the two fourth hanging ears.

[0057] The above are only preferred embodiments of the present invention and are not intended to limit the implementation and protection scope of the present invention.

[0058] The present invention further has the following embodiments based on the above:

[0059] In a further embodiment of the present invention, the load-releasing device mounting frame 1 includes: a strip long plate, a strip short plate and a strip connecting plate, the two strip long plates are parallel to each other, and five strip short plates are arranged between the two strip long plates. The two ends of each strip short plate are respectively connected to the two strip long plates, and the five strip short plates are parallel to each other. The two strip short plates at the left end are connected by a strip connecting plate, and the two strip short plates at the right end are connected by another strip connecting plate. The motor support frame 2 is installed on the strip short plate located in the middle, and each strip connecting plate is provided with a main limiting channel for inserting the latch rod 6. Each strip connecting plate is provided with a plurality of load-releasing limiting holes, and each hanging ear of the first-level load-releasing section is inserted into a load-releasing limiting hole from bottom to top and hung on a latch rod 6.

[0060] In a further embodiment of the present invention, the jettisoning device mounting frame 1 is composed of a long strip plate, a short strip plate and a strip connecting plate. While ensuring the strength of the jettisoning device mounting frame 1, the use of materials is reduced, the weight of the jettisoning device mounting frame 1 is reduced, and it is easier to float on the water.

[0061] In a further embodiment of the present invention, an underwater multi-stage dumping device is specifically described as an underwater two-stage dumping device, wherein the specific structure of the second-stage dumping section is the specific structure of the N-stage dumping section in the present invention, and the specific structure of the second-stage dumping is the specific structure of the N-stage dumping 7 in the present invention, such as Figures 1 to 9As shown, it includes a jettisoning release mechanism, a second-stage jettisoning section and a first-stage jettisoning section. The jettisoning release mechanism includes a jettisoning device mounting frame 1, a drive motor 3, a motor support frame 2, a crank 4, a connecting rod 5 and a latch rod 6. The drive motor 3 is mounted on the jettisoning device mounting frame 1 through the motor support frame 2 and connected by screws; the crank 4 is connected to the drive motor 3 by bolts, and is respectively connected to the two connecting rods 5 through the second pin shaft with a hole 17; the connecting rod 5 is connected to the latch rod 6 through the first pin shaft with a hole 16; the latch rod 6 is equipped with two rows of balls 13 on the upper and lower surfaces, and passes through the limiting holes of the jettisoning device mounting frame 1; the latch rod plug 14 is installed at the end of the latch rod 6 by screws; the second-stage jettisoning section includes the second-stage jettisoning, the upper deck and the skirt, which are installed on the jettisoning device. Below the device mounting frame 1, the second hanging ear of the second-stage dumping load passes through the second limiting hole of the upper deck, and is sleeved on the pin rod 6 of the dumping load release mechanism through the second hanging hole on the second hanging ear and the dumping load limiting hole of the dumping device mounting frame 1; the upper deck is welded to the second-stage dumping load; the skirt is connected to the second-stage dumping load and the upper deck by welding; the first-stage dumping load section includes a first hanging ear 10, a first-stage dumping load 11 and a bottom plate 12, which is installed below the second-stage dumping load section, and the first hanging hole on the first hanging ear 10 is sleeved on the pin rod 6 of the dumping load release mechanism; the first hanging ear 10 is embedded in the first-stage dumping load 11; and the bottom plate 12 is installed at the bottom of the first-stage dumping load 11.

[0062] In a further embodiment of the present invention, the load-releasing mechanism is composed of a bidirectional crank-slider mechanism through a crank 4, a connecting rod 5 and a latch rod 6. The center of the crank 4 is connected to the drive motor 3 and is located between the motor support frame 2 and the load-releasing device mounting frame 1; the latch rod 6 passes through the main limit channel of the load-releasing device mounting frame 1, the second suspension hole of the second-stage load-releasing section and the first suspension hole of the first-stage load-releasing section; the upper and lower surfaces of the latch rod 6 are each equipped with two rows of balls 13, and the end is equipped with a latch rod plug 14.

[0063] In a further embodiment of the present invention, the second hanging ear of the second stage dumping section passes through the second limiting hole of the upper deck and the dumping limiting hole of the dumping device mounting frame 1, and is sleeved on the latch rod 6 of the dumping release mechanism through the second hanging hole on the second hanging ear; the second stage dumping is welded by a square tube, as shown Figure 9 The upper deck and skirt are welded on the second-stage dumping load to form the second-stage dumping load section.

[0064] In a further embodiment of the present invention, the first-stage dumping load 11 of the first-stage dumping section is a boss-shaped concrete block with a circular through hole in the center. The upper end of the first hanging ear 10 passes through the first limiting hole of the upper deck 8 and the dumping limiting hole of the dumping device mounting frame 1, and is sleeved on the pin rod 6 of the dumping release mechanism through the first hanging hole on the first hanging ear 10, and the lower end is embedded in the first-stage dumping load 11; the bottom plate 12 is installed at the bottom of the first-stage dumping load 11.

[0065] In a further embodiment of the present invention, the jettisoning release mechanism is installed above the jettisoning device mounting frame 1 , and the entire jettisoning device is connected to other components of the underwater system through the jettisoning device mounting frame 1 . A bidirectional crank slider mechanism is driven by a single drive motor 3. The center of the crank 4 is connected to the drive motor 3 and is located between the motor support frame 2 and the ejection device mounting frame 1. The groove of the motor support frame 2 can limit the maximum rotation angle of the crank 4; the latch rod 6 passes through the main limit channel of the ejection device mounting frame 1, so that the latch rod 6 can only move horizontally along the length of the rod, and passes through the second hanging hole of the second-stage ejection and the first hanging hole on the first hanging ear 10 of the first-stage ejection section to limit the vertical displacement of the ejection, and then control the release of the ejection by the displacement of the latch rod 6, which has higher reliability and stability; two rows of balls 13 are respectively installed on the upper and lower surfaces of the latch rod 6 to reduce the friction between the first hanging hole, the second hanging hole and the main limit hole of the ejection device mounting frame 1, thereby reducing the load on the drive motor 3; a latch rod plug 14 is installed at the end of the latch rod 6 to seal the balls 13 in the groove of the latch rod 6, and at the same time facilitate the insertion of the balls 13.

[0066] In a further embodiment of the present invention, the second-stage dumping section is installed below the dumping device mounting frame 1, and the second hanging ear of the second-stage dumping load passes through the second limiting hole of the upper deck and the dumping limiting hole of the dumping device mounting frame 1 to prevent the second-stage dumping load from moving in the horizontal direction; and through the second hanging hole on the second hanging ear, it is sleeved on the pin rod 6 of the dumping load release mechanism to realize the connection between the second-stage dumping load section and the dumping load release mechanism; the skirt and the upper deck are welded to the second-stage dumping load, so that the second-stage dumping load section is cylindrical to reduce the diving resistance and prevent suspended matter or mud from entering the square tube.

[0067] In a further embodiment of the present invention, the first-stage dumping section is installed below the second-stage dumping section, and the first-stage dumping 11 of the first-stage dumping section is a boss-shaped concrete block with a circular through hole in the center, which can reduce the resistance during the diving process; the upper end of the first hanging ear 10 passes through the first limiting hole of the upper deck 8 and the dumping limiting hole of the dumping device mounting frame 1 to prevent the first-stage dumping 11 from moving in the horizontal direction, and is sleeved on the pin rod 6 of the dumping release mechanism through the first hanging hole on the first hanging ear 10, and the lower end of the first hanging ear 10 is embedded in the first-stage dumping 11 to realize the connection between the first-stage dumping section and the dumping release mechanism; the bottom plate 12 is installed at the bottom of the first-stage dumping 11 to prevent large suspended matter in the water from entering from the bottom.

[0068] In a further embodiment of the present invention, the bidirectional slider-crank mechanism is composed of a single crank 4 , two connecting rods 5 and two latch rods 6 .

[0069] In a further embodiment of the present invention, the working principle is as follows: when the underwater secondary dumping device is working, first, according to Figures 1 to 4As shown, the driving motor 3 is energized, the motor shaft rotates, and the motor shaft drives the crank 4 to rotate, and the bidirectional crank slider mechanism starts to move. The crank 4 drives the connecting rods 5 on both sides to move through the two second pin shafts with holes 17, and the connecting rods 5 on both sides respectively drive the latch rods 6 on both sides to make horizontal linear motion through the first pin shafts with holes 16. When the motor shaft rotates a certain angle, the latch rod 6 moves a certain distance, and the latch rod plug 14 at the end of the latch rod 6 is pulled out from the first hanging hole of the first hanging ear 10 of the first stage jettisoning section. The latch rod 6 loses its vertical limiting effect on the first stage jettisoning 11, and the first stage jettisoning section sinks under the action of gravity, completing the first stage. After the load-shedding task is completed, the motor stops rotating; thereafter, the driving motor 3 runs again, the bidirectional crank slider mechanism continues to move, and the latch rods 6 on both sides continue to move driven by the connecting rod 5. The latch rod 6 continues to move a certain distance, and the latch rod plug 14 at the end of the latch rod 6 is pulled out from the second hanging hole of the second hanging ear of the second-stage load-shedding. The latch rod 6 loses its limiting effect on the vertical direction of the second-stage load-shedding, and the second-stage load-shedding section sinks under the action of gravity, completing the second-stage load-shedding task, realizing multi-stage load-shedding, and the motor stops rotating.

[0070] In a further embodiment of the present invention, the load-releasing structure drives a bidirectional crank slider mechanism through a single drive motor 3, which can save space, and this mechanical release structure improves the reliability and stability of the load-releasing device; in addition, two rows of balls 13 are respectively installed on the upper and lower surfaces of the latch rod 6, which can reduce the friction between the latch rod 6 and the first hanging hole, the second hanging hole and the main limiting channel of the load-releasing device mounting frame 1, thereby reducing the load on the drive motor 3.

[0071] In a further embodiment of the present invention, the second-stage dumping section has a cylindrical shape, the first-stage dumping section has a boss shape, and has a circular through hole in the center, which can reduce the resistance during the diving process. At the same time, a bottom plate 12 is installed at the bottom of the first-stage dumping 11 to prevent large suspended matter or mud and sand in the water from entering from the bottom.

[0072] In a further embodiment of the present invention, the second-stage dumping load is a hollow structure, which has the effect of reducing mass and increasing buoyancy.

[0073] In a further embodiment of the present invention, the above content is described with an underwater two-stage jettisoning device, wherein the specific structure of the second-stage jettisoning section is the specific structure of the N-stage jettisoning section in the present invention, and the specific structure of the second-stage jettisoning load is the specific structure of the N-stage jettisoning load 7 in the present invention. The specific structure, size and shape of the N-stage jettisoning section and the N-stage jettisoning load 7 can also be designed separately according to the number N.

[0074] In a further embodiment of the present invention, Figure 2The figure shows a schematic diagram of the main cross-sectional structure of the underwater two-stage jettisoning device. When N=3, the underwater multi-stage jettisoning device is an underwater three-stage jettisoning device, the N-th stage jettisoning section is the third stage jettisoning section, and the second stage jettisoning section is located between the first stage jettisoning section and the third stage jettisoning section. Specifically: two first hanging ears 10 are symmetrically arranged on the first stage jettisoning section, two second hanging ears are symmetrically arranged on the second stage jettisoning section, and two third hanging ears are symmetrically arranged on the third stage jettisoning section. A first hanging ear 10, a second hanging ear and a third hanging ear on either side are arranged in sequence from the outside to the inside and are all suspended on a latch rod 6. The order of the suspension process is the third hanging ear, the second hanging ear, and the first hanging ear 10, and the order of the release process is the first hanging ear 10, the second hanging ear, and the third hanging ear.

[0075] In a further embodiment of the present invention, Figure 2 The figure shows a schematic diagram of the main cross-sectional structure of the underwater two-stage jettisoning device. When N=4, the underwater multi-stage jettisoning device is an underwater four-stage jettisoning device, the Nth-stage jettisoning section is the fourth-stage jettisoning section, and the second-stage jettisoning section and the third-stage jettisoning section are located between the first-stage jettisoning section and the fourth-stage jettisoning section. Specifically: two first hanging ears 10 are symmetrically arranged on the first-stage jettisoning section, two second hanging ears are symmetrically arranged on the second-stage jettisoning section, two third hanging ears are symmetrically arranged on the third-stage jettisoning section, and two fourth hanging ears are symmetrically arranged on the fourth-stage jettisoning section. A first hanging ear 10, a second hanging ear, a third hanging ear and a fourth hanging ear on either side are arranged in sequence from the outside to the inside and are all suspended on a latch rod 6. The order of the suspension process is the fourth hanging ear, the third hanging ear, the second hanging ear, and the first hanging ear 10, and the order of the release process is the first hanging ear 10, the second hanging ear, the third hanging ear, and the fourth hanging ear. The second-stage jettisoning section is located outside and / or below the third-stage jettisoning section, the first-stage jettisoning section is located outside and / or below the second-stage jettisoning section, and the fourth-stage jettisoning section is located inside and / or above the third-stage jettisoning section.

[0076] In a further embodiment of the present invention, the multi-stage load-releasing section is coaxially arranged and assembled in sequence from inside to outside and from top to bottom below the load-releasing release mechanism; specifically, the multi-stage load-releasing section can be covered layer by layer with a nesting doll structure and suspended on two latch rods 6 through a hanging ear structure, and the drive motor 3 is used to drive the two latch rods 6 to slide synchronously in the two main limiting channels to release the first-stage load-releasing section, the second-stage load-releasing section...the N-stage load-releasing section of the multi-stage load-releasing section in sequence.

[0077] In a further embodiment of the present invention, the multi-stage load-releasing section is coaxially arranged and assembled in sequence from the inside to the outside under the load-releasing release mechanism; specifically, the multi-stage load-releasing section can be wrapped layer by layer from the inside to the outside with a cylindrical structure of similar length and different outer diameters and suspended on two latch rods 6 through a hanging ear structure, and the drive motor 3 is used to drive the two latch rods 6 to slide synchronously in the two main limiting channels respectively to release the first-stage load-releasing section, the second-stage load-releasing section...the N-stage load-releasing section of the multi-stage load-releasing section in sequence.

[0078] In a further embodiment of the present invention, the multi-stage load-releasing sections are coaxially arranged and assembled in sequence from top to bottom below the load-releasing release mechanism; specifically, the multi-stage load-releasing sections can adopt a structure stacked layer by layer from top to bottom and suspended on two latch rods 6 through a hanging ear structure, and the drive motor 3 is used to drive the two latch rods 6 to slide synchronously in the two main limiting channels to release the first-stage load-releasing section, the second-stage load-releasing section...the N-stage load-releasing section of the multi-stage load-releasing section in sequence.

[0079] The above are only preferred embodiments of the present invention and do not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. An underwater multi-stage load-dumping device, comprising: A load-releasing mechanism and a multi-stage load-releasing section, characterized in that the multi-stage load-releasing section is coaxially arranged and assembled below the load-releasing mechanism in sequence from inside to outside and / or from top to bottom; the total number of the multi-stage load-releasing sections is represented by N, where N is an integer not less than 2; the load-releasing section located at the outermost and / or lowermost side is the first-stage load-releasing section, the load-releasing section located at the innermost and / or uppermost side is the Nth-stage load-releasing section, and the first-stage load-releasing section to the Nth-stage load-releasing section are arranged in sequence from outside to inside and / or from bottom to top; when N is 3 or greater, the second-stage load-releasing section, the third-stage load-releasing section, etc. are sequentially arranged between the first-stage load-releasing section and the Nth-stage load-releasing section; The load-releasing mechanism comprises: a load-releasing device mounting frame (1), a motor support frame (2), a driving motor (3), a crank-connecting rod mechanism and a latch rod (6); the driving motor (3) is mounted on the middle portion of the load-releasing device mounting frame (1) through the motor support frame (2); two main limit channels are symmetrically arranged on the load-releasing device mounting frame (1); a plurality of load-releasing limit holes are sequentially opened at the bottom of each main limit channel from the inside to the outside; a latch rod (6) is slidably mounted in each main limit channel; the two latch rods (6) are connected to the output end of the driving motor (3) through the crank-connecting rod mechanism; Two hanging ears are provided on each first-stage dumping section, and the multi-stage dumping sections are symmetrically arranged on the left and right. Each hanging ear of the first-stage dumping section passes through a dumping limit hole of a main limit channel from bottom to top and is hung on a latch rod (6); The two hanging ears of the multi-stage dumping section arranged from inside to outside and / or from top to bottom are sequentially inserted into the multiple dumping limit holes at the bottom of the two main limit channels from inside to outside, and the driving motor (3) is used to drive the two latch rods (6) to slide synchronously in the two main limit channels respectively to dump the first stage dumping section, the second stage dumping section...the Nth stage dumping section of the multi-stage dumping section in sequence.

2. The underwater multi-stage dumping device according to claim 1, characterized in that: The load-releasing mechanism further comprises: a second pin shaft with a hole (17) and a first pin shaft with a hole (16); the crank-connecting rod mechanism comprises: a crank (4) and two connecting rods (5); the middle portion of the crank (4) is connected to the output end of the drive motor (3); one end of each connecting rod (5) is rotationally connected to one end of the crank (4) via a second pin shaft with a hole (17); and the other end of each connecting rod (5) is rotationally connected to one end of a latch rod (6) via a first pin shaft with a hole (16).

3. The underwater multi-stage dumping device according to claim 2, characterized in that: The load-releasing mechanism further includes: a ball (13); each latch rod (6) has at least one row of grooves on its top and bottom surfaces, and at least one rollable ball (13) is installed in each row of grooves; The load-releasing mechanism further comprises a latch rod plug (14), wherein the other end of each latch rod (6) is connected to a latch rod plug (14), and the latch rod plug (14) is used to limit the balls (13) in the multiple rows of grooves.

4. The underwater multi-stage dumping device according to claim 1, characterized in that: The first-stage dumping section includes a first-stage dumping load (11), and two first hanging ears (10) are symmetrically arranged on the upper surface of the first-stage dumping load (11). Each first hanging ear (10) is placed in a dumping load limiting hole. The first-stage dumping section is assembled on the dumping load release mechanism through the two first hanging ears (10).

5. The underwater multi-stage dumping device according to claim 4, characterized in that: The first-stage dumping section further comprises a bottom plate (12), the first-stage dumping (11) is in the shape of an inverted boss, a cylindrical through hole is provided inside the first-stage dumping (11), and the bottom surface of the first-stage dumping (11) is connected to the bottom plate (12).

6. The underwater multi-stage dumping device according to claim 1, characterized in that: The Nth-stage dumping section includes an Nth-stage dumping load (7), and two Nth-stage hanging ears are symmetrically arranged on the upper surface of the Nth-stage dumping load (7), each Nth-stage hanging ear is placed in a dumping load limiting hole, and the Nth-stage dumping section is assembled on the dumping load release mechanism through the two Nth-stage hanging ears.

7. The underwater multi-stage dumping device according to claim 5, characterized in that: The Nth stage dumping section is cylindrical in shape as a whole, and further comprises: an upper deck (8) and a skirt (9), wherein the upper deck (8) is provided with 2×(N-1) first limiting holes and two second limiting holes, and each Nth hanging lug is placed in a second limiting hole, the top surface of the Nth stage dumping (7) is connected to the bottom surface of the upper deck (8), the skirt (9) is provided on the outer periphery of the Nth stage dumping (7), and the Nth stage dumping (7) is formed by welding square tubes, and the top surface of the skirt (9) is connected to the bottom surface of the upper deck (8); A hanging ear of any level of the load shedding section from the first level to the N-1 level is inserted into a first limiting hole.

8. The underwater multi-stage dumping device according to any one of claims 1 to 7, characterized in that: The first to Nth level dumping sections are all assembled on the dumping release mechanism. The Nth level dumping section is located below the dumping release mechanism and within the N-1 level dumping section. The first level dumping section at the bottom is located outside the second level dumping section and below the second level dumping section. Each main limit channel is provided with N dumping limit holes at the bottom. Two first hanging ears (10) are provided on the first-stage dumping section, each first hanging ear (10) is inserted into a dumping hole from bottom to top, and each first hanging ear (10) is provided with a first hanging hole for inserting a latch rod (6), and the first-stage dumping section is assembled on the dumping release mechanism through the two first hanging ears (10); Two second hanging ears are provided on the second-stage dumping section, each second hanging ear is inserted into a dumping limit hole from bottom to top, and each second hanging ear is provided with a second hanging hole for inserting a latch rod (6), and the second-stage dumping section is assembled on the dumping release mechanism through the two second hanging ears; Two Nth hanging ears are provided on the Nth level dumping section, each Nth hanging ear is inserted into a dumping limit hole from bottom to top, and each Nth hanging ear is provided with an Nth hanging hole for inserting a latch rod (6), and the Nth level dumping section is assembled on the dumping release mechanism through the two Nth hanging ears.

9. The underwater multi-stage dumping device according to claim 8, characterized in that: The underwater multi-stage jettisoning device is an underwater two-stage jettisoning device, that is, when N=2, the first-stage jettisoning section and the second-stage jettisoning section are both assembled on the jettisoning release mechanism, the second-stage jettisoning section is arranged below the jettisoning release mechanism and within the first-stage jettisoning section, and the first-stage jettisoning section is arranged below the second-stage jettisoning section; and two jettisoning limit holes are provided at the bottom of each main limit channel; Two first hanging ears (10) are provided on the first-stage dumping section, each first hanging ear (10) is inserted into a dumping hole from bottom to top, and each first hanging ear (10) is provided with a first hanging hole for inserting a latch rod (6), and the first-stage dumping section is assembled on the dumping release mechanism through the two first hanging ears (10); Two second hanging ears are provided on the second-stage dumping section, each second hanging ear is inserted into a dumping limit hole from bottom to top, and each second hanging ear is provided with a second hanging hole for inserting a latch rod (6). The second-stage dumping section is assembled on the dumping release mechanism through the two second hanging ears.

10. The underwater multi-stage dumping device according to claim 8, characterized in that: The underwater multi-stage jettisoning device is an underwater three-stage jettisoning device, that is, when N=3, a second-stage jettisoning section is provided between the first-stage jettisoning section and the third-stage jettisoning section, the first-stage jettisoning section, the second-stage jettisoning section and the third-stage jettisoning section are all assembled on a jettisoning release mechanism, the third-stage jettisoning section is provided below the jettisoning release mechanism and inside the second-stage jettisoning section, the first-stage jettisoning section is provided outside the second-stage jettisoning section and below the second-stage jettisoning section; three jettisoning limit holes are provided at the bottom of each main limit channel; Two first hanging ears (10) are provided on the first-stage dumping section, each first hanging ear (10) is inserted into a dumping hole from bottom to top, and each first hanging ear (10) is provided with a first hanging hole for inserting a latch rod (6), and the first-stage dumping section is assembled on the dumping release mechanism through the two first hanging ears (10); Two second hanging ears are provided on the second-stage dumping section, each second hanging ear is inserted into a dumping limit hole from bottom to top, and each second hanging ear is provided with a second hanging hole for inserting a latch rod (6), and the second-stage dumping section is assembled on the dumping release mechanism through the two second hanging ears; Two third hanging ears are provided on the third-stage dumping section, each third hanging ear is inserted into a dumping limit hole from bottom to top, and each third hanging ear is provided with a third hanging hole for inserting a latch rod (6), and the third-stage dumping section is assembled on the dumping release mechanism through the two third hanging ears; Alternatively, the underwater multi-stage jettisoning device is an underwater four-stage jettisoning device, that is, when N=4, a second-stage jettisoning section and a third-stage jettisoning section are arranged between the first-stage jettisoning section and the fourth-stage jettisoning section, the first-stage jettisoning section, the second-stage jettisoning section, the third-stage jettisoning section and the fourth-stage jettisoning section are all assembled on a jettisoning release mechanism, the fourth-stage jettisoning section is arranged below the jettisoning release mechanism and inside the third-stage jettisoning section, the second-stage jettisoning section is arranged outside the third-stage jettisoning section and below the third-stage jettisoning section, the first-stage jettisoning section is arranged outside the second-stage jettisoning section and below the second-stage jettisoning section; four jettisoning limit holes are opened at the bottom of each main limit channel; Two first hanging ears (10) are provided on the first-stage dumping section, each first hanging ear (10) is inserted into a dumping hole from bottom to top, and each first hanging ear (10) is provided with a first hanging hole for inserting a latch rod (6), and the first-stage dumping section is assembled on the dumping release mechanism through the two first hanging ears (10); Two second hanging ears are provided on the second-stage dumping section, each second hanging ear is inserted into a dumping limit hole from bottom to top, and each second hanging ear is provided with a second hanging hole for inserting a latch rod (6), and the second-stage dumping section is assembled on the dumping release mechanism through the two second hanging ears; Two third hanging ears are provided on the third-stage dumping section, each third hanging ear is inserted into a dumping limit hole from bottom to top, and each third hanging ear is provided with a third hanging hole for inserting a latch rod (6), and the third-stage dumping section is assembled on the dumping release mechanism through the two third hanging ears; Two fourth hanging ears are provided on the fourth-stage dumping section, each of which is inserted into a dumping limit hole from bottom to top, and each of which is provided with a fourth hanging hole for inserting a latch rod (6). The fourth-stage dumping section is assembled on the dumping release mechanism through the two fourth hanging ears.

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