CN116798807B - Pressure balance type deep sea piston floating trigger switch and electric tool thereof - Google Patents
Pressure balance type deep sea piston floating trigger switch and electric tool thereof Download PDFInfo
- Publication number
- CN116798807B CN116798807B CN202310750933.1A CN202310750933A CN116798807B CN 116798807 B CN116798807 B CN 116798807B CN 202310750933 A CN202310750933 A CN 202310750933A CN 116798807 B CN116798807 B CN 116798807B
- Authority
- CN
- China
- Prior art keywords
- piston
- shell
- switch
- piston rod
- deep sea
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000007789 sealing Methods 0.000 claims abstract description 23
- 238000009413 insulation Methods 0.000 claims description 7
- 239000012634 fragment Substances 0.000 abstract 2
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000009189 diving Effects 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Landscapes
- Push-Button Switches (AREA)
Abstract
The invention discloses a pressure balance type deep sea piston floating trigger switch and an electric tool thereof, and relates to the technical field of marine mechanical equipment control, wherein the trigger switch comprises a shell, a piston rod and a spring switch; the top end of the shell is detachably connected with a cover body which is provided with a preformed hole; the piston is arranged in the shell, the outer side wall of the piston is connected with the inner side wall of the shell in a sealing sliding way, an insulating medium is filled in a closed cavity formed by the bottom surface of the piston, the inner side wall of the shell and the bottom wall of the shell, and a through assembly hole is formed in the axial direction of the piston; the piston rod passes through the preformed hole and the assembly hole and is in sealed sliding connection with the assembly hole, a spring is sleeved on the piston rod, and the spring is tightly propped between the spring stop block and the cover body; the shell fragment switch is installed at the interior bottom wall of casing, and the shell fragment switch corresponds with the piston rod. The invention also provides an electric tool matched with the structure, which can realize the closing of an electric switch of the electric tool, simplify the structure of the switch, improve the working efficiency and reduce the safety risk.
Description
Technical Field
The invention relates to the technical field of marine mechanical equipment control, in particular to a pressure balance type deep sea piston floating trigger switch and an electric tool thereof.
Background
Ocean exploration equipment such as deep sea ROV, manned deep diving equipment often carry a large number of tool bags during underwater operation, including small-sized core drills for obtaining columnar core samples, grab buckets for obtaining surface layer samples, cutting tools for completing cutting operations, and the like.
The deep sea ROV and manned submersible vehicle are required to be powered during operation, and usually the deep sea detection equipment bodies such as the deep sea ROV and the manned submersible vehicle can provide hydraulic power or electric power for the tools, but no matter what power needs the tools to be connected with the body, the tools are complex in structure and large in size, the deep sea ROV and the manned submersible vehicle need to be rapidly evacuated from the sea floor when encountering complex conditions, and the evacuation speed is greatly influenced by the connection of the tools with the body, so that huge potential safety hazards are brought. To ensure safety, special disposal means are also provided to ensure rapid evacuation in an emergency.
The tool which does not need the body to provide power is usually an electric tool with power from a belt, the use of the tool needs to be triggered by a switch, an external switch needs to be provided with an expensive watertight connector, and the use of the tool is difficult due to the triggering of the switch and the pressure resistance of the switch.
Therefore, how to provide a switch control structure of an electric tool to realize the safety and reliability of the switch of the self-contained electric tool, and suitable for deep sea use is a problem that needs to be solved by those skilled in the art.
Disclosure of Invention
Therefore, the invention provides the pressure balance type deep sea piston floating trigger switch and the electric tool thereof, which can be effectively matched with a mechanical arm to realize the safe and reliable switch of the electric tool.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
A pressure balanced deep sea piston float trigger switch comprising: the shell, the piston rod and the spring switch;
The top end of the shell is detachably connected with a cover body, and the cover body is provided with a preformed hole;
The piston is arranged in the shell, the outer side wall of the piston is connected with the inner side wall of the shell in a sealing sliding manner, an insulating medium is filled in a closed cavity formed by the bottom surface of the piston, the inner side wall of the shell and the bottom wall of the shell, and a through assembly hole is formed in the axial direction of the piston;
The piston rod passes through the reserved hole and the assembly hole and is in sealing sliding connection with the assembly hole, a spring stop block is fixed at the top of the piston rod, a limit stop block with the diameter larger than that of the assembly hole is arranged at the bottom end of the piston rod, a spring is sleeved on the piston rod, and the spring is tightly propped between the spring stop block and the cover body;
The elastic sheet switch is arranged on the inner bottom wall of the shell, and corresponds to the piston rod.
Through the technical scheme, the invention provides the deep-sea piston floating trigger switch, the control of the shrapnel switch in a deep-sea environment can be realized through the mutual matching of the piston rod and the shrapnel switch, the control is simpler and more reliable, and meanwhile, the switch structure in the prior art is further simplified, so that richer tool types can be provided for a tool pack of ocean detection equipment, and the safety efficiency is improved; meanwhile, through the up-and-down floating matching relation between the piston and the inner wall of the shell and the insulating medium in the closed space, the pressure difference between the inside and the outside of the shell can be effectively overcome, the balance of the pressure between the inside and the outside is kept, and the switch can be ensured to be normally used in deep sea without additionally providing a pressure-resistant bin. And through the cover establish the spring on the piston rod, the spring is compressed tightly under the effect of spring dog and lid when the piston rod down motion under the exogenic action like this, when the exogenic relief on the piston rod, the elasticity that the spring produced will drive the piston rod and reset.
Preferably, in the pressure balance type deep sea piston floating trigger switch, an insulation pressing ring is fixed on the bottom surface of the limit stop, and the insulation pressing ring corresponds to the elastic sheet switch. The piston rod is matched with the spring switch through the insulation compression ring to achieve the function of the control switch, and short-circuit faults caused by the matching of the piston rod and the spring switch are prevented.
Preferably, in the pressure balance type deep sea piston floating trigger switch, a first groove is formed in the outer side wall of the piston, and a first sealing component is embedded in the first groove; the pore wall of the assembly hole is provided with a second groove, and a second sealing component is embedded in the second groove. The sliding seal between the piston and the shell and between the piston rod and the piston is realized by utilizing the sealing assembly, so that the tightness of the elastic sheet switch is further ensured, and the elastic sheet switch can work normally under the high-pressure condition of deep sea.
Preferably, in the pressure balance type deep sea piston floating trigger switch, the insulating medium is transformer oil. The insulating environment is built, so that the situation that the airtight space formed by the piston and the shell is free from electric leakage is ensured, and the safety of the switch is further ensured; meanwhile, the insulating medium is filled, so that the problem of pressure difference existing in deep sea operation of the switch can be effectively solved, the capacity of transformer oil is allocated through the deep sea depth of the switch operation, the piston rod can be kept in suspension in the switch-off state, and the spring switch is not triggered.
Preferably, in the pressure balance type deep sea piston floating trigger switch, the shell is in threaded connection with the cover body. The piston can be placed into the inner cavity of the shell smoothly through threaded connection, and meanwhile, the cover body can also ensure that the piston cannot be separated from the shell when floating upwards.
The invention also provides an electric tool, which comprises a tool body, wherein the tool body is connected with the pressure balance type deep sea piston floating trigger switch, and a battery, a motor and the spring switch of the tool body form an electric control loop.
Through the technical scheme, the tool body is electrically connected with the elastic sheet switch, so that the electric tool can be effectively controlled, and the safe and effective operation of the electric tool in deep sea is realized.
Preferably, in the above electric tool, the top end of the casing of the tool body is fixedly connected with the bottom end of the casing. The effective matching of the electric tool and the pressure balance type deep sea piston floating trigger switch is further realized.
Preferably, in the above electric tool, the battery and the motor are mounted in the housing, an end cover is detachably connected to a bottom end opening of the housing, an avoidance hole is formed in the end cover, and a power output shaft of the motor passes through the avoidance hole. The battery, the motor and the end cover are matched with each other, so that the specific operation of the electric tool can be realized; the end cover realizes the normal work of the motor output shaft through avoiding the hole, and ensures that the motor output shaft can provide power for the working end of the electric tool.
Preferably, in the above electric power tool, the end cap is screwed with the housing. The end cover is detachable through threaded connection, so that follow-up maintenance, replacement and other works are more convenient.
Compared with the prior art, the invention discloses the pressure balance type deep sea piston floating trigger switch and the electric tool thereof, which have the following beneficial effects:
1. the invention utilizes the up-and-down motion of the piston rod to connect and disconnect the switch, has simple structure, reliable action and economic benefit, can effectively realize the closing of the electric switch, provides richer tool types for ocean detection equipment tool bags such as deep sea remote control diving devices, manned deep diving devices and the like, improves the working efficiency and reduces the safety risk.
2. According to the invention, the sealing space formed by the shell and the piston is filled with the insulating medium, and the piston is enabled to float up and down to realize pressure balance inside and outside the shell, so that the switch of the electric tool does not need a pressure-resistant bin or a watertight connector to assist in completing work, the structural size of the tool is simplified, the weight is reduced, and the cost is saved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram showing a sectional view of a pressure balanced deep sea piston floating trigger switch according to the present invention;
fig. 2 is a sectional view of the structure of the electric tool provided by the invention.
Wherein:
1-a spring stop; 2-a piston rod; 3-a spring; 4-a cover; 5-a piston; 6-a first seal assembly; 7-a second seal assembly; 8-limit stops; 9-an insulating compression ring; 10-a housing; 11-a spring switch; 12-an insulating medium; 13-a battery; 14-an electric motor; 15-end caps; 16-a housing.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1:
Referring to fig. 1, the embodiment of the invention discloses a pressure balance type deep sea piston floating trigger switch, which comprises: the piston comprises a shell 10, a piston 5, a piston rod 2 and a spring switch 11;
the top end of the shell 10 is detachably connected with a cover body 4, and the cover body 4 is provided with a preformed hole;
the piston 5 is arranged in the shell 10, the outer side wall of the piston 5 is connected with the inner side wall of the shell 10 in a sealing sliding manner, an insulating medium 12 is filled in a closed cavity formed by the bottom surface of the piston 5, the inner side wall of the shell 10 and the bottom wall, and a through assembly hole is formed in the axial direction of the piston 5;
the piston rod 2 passes through the reserved hole and the assembly hole and is in sealed sliding connection with the assembly hole, the top of the piston rod 2 is fixed with a spring stop block 1, the bottom end of the piston rod 2 is provided with a limit stop block 8 with the diameter larger than that of the assembly hole, the piston rod 2 is sleeved with a spring 3, and the spring 3 is tightly propped between the spring stop block 1 and the cover body 4; the spring 3 is sleeved on the piston rod 2, when the piston 5 moves downwards, the spring is compressed under the action of the spring stop block 1 and the cover body 4, and when the external force on the piston rod 2 is relieved, the elastic force of the spring 3 drives the piston rod 2 to reset;
The dome switch 11 is mounted on the inner bottom wall of the housing 10, and the dome switch 11 corresponds to the piston rod 2.
In order to further optimize the technical scheme, the bottom surface of the limit stop 8 is fixed with an insulation pressing ring 9, and the insulation pressing ring 9 corresponds to the elastic sheet switch 11.
In order to further optimize the technical scheme, the outer side wall of the piston 5 is provided with a first groove, and a first sealing component 6 is embedded in the first groove; the pore wall of the assembly hole is provided with a second groove, and a second sealing component 7 is embedded in the second groove.
The piston 5 is installed in the casing 10, forms the seal with the inner wall of the casing 10 through the first seal assembly 6 to can float from top to bottom along the inner wall of the casing 10, the piston 5 upwards floats when the piston rod 2 moves downwards, the piston 5 downwards floats when the piston rod 2 moves upwards, and the pressure balance between the inside and the outside of the casing 10 can be ensured through the floating of the piston 5.
In the present embodiment, the first sealing member 6 is a combination of a gleaned ring and a wear-resistant ring, and the second sealing member 7 is a wear-resistant ring.
To further optimize the above solution, the insulating medium 12 is transformer oil.
In this embodiment, the housing 10 is screwed with the cap 4, and the spring stopper 1 is screwed with the tip of the piston rod 2.
The action principle of the pressure balance type deep sea piston floating trigger switch provided by the embodiment is as follows:
The piston rod 2 moves downwards through the insulating compression ring 9 to compress the shrapnel switch 11 to make the attraction of the shrapnel switch 11 by means of external force, the spring 3 is compressed, the shrapnel switch 11 automatically bounces by means of the elastic force of the spring 3 after the work is finished, the switch is disconnected, the piston 5 forms sealing with the piston rod 2 through the second sealing component 7, the sealing is formed between the first sealing component 6 and the inner wall of the shell 10, the piston 5 floats upwards when the piston rod 2 moves downwards due to the fact that the shell 10 is filled with transformer oil incompressible, and the piston 5 floats downwards and resets under the pressure balance effect of seawater and internal transformer oil when the piston rod 2 moves upwards, so that the internal pressure and the external pressure of the shell 10 are balanced. The spring 3 is sleeved on the piston rod 2, and when the piston rod 2 moves downwards, the spring stop block 1 and the cover body 4 are in a compressed state, and the cover body 4 is connected with the shell 10 through threads, so that the piston 5 can be ensured not to be separated from the shell 10 when floating upwards.
The pressure balance type deep sea piston floating trigger switch provided by the embodiment can be directly placed in sea water, internal and external pressure is balanced, external pressure-resistant cabin protection is not needed, operation triggering can be carried out through a manipulator of deep sea equipment such as a deep sea ROV, a manned deep submersible vehicle and the like, and an effective solution is provided for starting a self-contained electric tool equipped with the deep sea equipment such as the ROV, the deep submersible vehicle and the like.
Example 2:
Referring to fig. 2, the embodiment of the invention discloses an electric tool, which comprises a tool body, wherein the tool body is connected with a pressure balance type deep sea piston floating trigger switch of embodiment 1, and a battery 13, a motor 14 and a shrapnel switch 11 of the tool body form an electric control loop. It can be seen that the pressure balance type deep sea piston floating trigger switch of embodiment 1 cooperates with the electric tool to realize the normal operation of the electric tool.
The insulating medium 12 filled in the closed space formed by the piston 5 and the shell 10 needs to be regulated and controlled according to the pressure of the seabed depth of the actual operation of the electric tool, so as to ensure that the piston rod 2 can be in a suspended state under the state of closing a switch.
To further optimize the above technical solution, the top end of the casing 16 of the tool body is fixedly connected to the bottom end of the housing 10.
In order to further optimize the technical scheme, the battery 13 and the motor 14 are arranged in the shell 16, the bottom end opening of the shell 16 is detachably connected with the end cover 15, the end cover 15 is provided with the avoidance hole, and the power output shaft of the motor 14 penetrates through the avoidance hole.
To further optimise the solution described above, the end cap 15 is screwed with the housing 16.
In this embodiment, a battery 13 and a motor 14 for driving a tool are installed inside a housing 16, and a sealed end cover 15 is connected to the lower portion of the housing 16 for sealing an electric control element of the motor 14. The switch lead of the motor 14 is connected with the two poles of the shrapnel switch 11. The piston rod 2 is operated by external force to move downwards, the elastic sheet switch 11 is compressed and closed, the motor 14 starts to rotate, the external force releases the piston rod 2, the spring 3 drives the piston rod 2 to reset, the elastic sheet switch 11 is sprung, and the motor 14 stops rotating.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A pressure balanced deep sea piston float trigger switch, comprising:
the shell (10), the top of the shell (10) is detachably connected with a cover body (4), and the cover body (4) is provided with a preformed hole;
The piston (5) is arranged in the shell (10), the outer side wall of the piston (5) is connected with the inner side wall of the shell (10) in a sealing sliding manner, an insulating medium (12) is filled in a closed cavity formed by the bottom surface of the piston (5) and the inner side wall and the bottom wall of the shell (10), and a through assembly hole is formed in the axial direction of the piston (5);
The piston rod (2) penetrates through the reserved hole and the assembly hole and is in sealing sliding connection with the assembly hole, a spring stop block (1) is fixed at the top of the piston rod (2), a limit stop block (8) with the diameter larger than that of the assembly hole is arranged at the bottom end of the piston rod (2), a spring (3) is sleeved on the piston rod (2), and the spring (3) is tightly propped between the spring stop block (1) and the cover body (4);
The elastic sheet switch (11), the elastic sheet switch (11) is installed on the inner bottom wall of the shell (10), and the elastic sheet switch (11) corresponds to the piston rod (2);
A first groove is formed in the outer side wall of the piston (5), and a first sealing component (6) is embedded in the first groove; the wall of the assembly hole is provided with a second groove, and a second sealing assembly (7) is embedded in the second groove.
2. The pressure balance type deep sea piston floating trigger switch according to claim 1, wherein an insulation pressing ring (9) is fixed on the bottom surface of the limit stop (8), and the insulation pressing ring (9) corresponds to the spring switch (11).
3. A pressure balanced deep sea piston floating trigger switch according to claim 1, characterized in that the first sealing assembly (6) and the second sealing assembly (7) are gurley and/or wear rings.
4. A pressure balanced deep sea piston float trigger switch according to claim 1, wherein the insulating medium (12) is transformer oil.
5. A pressure balanced deep sea piston float trigger switch according to claim 1, wherein the housing (10) is threaded with the cover (4).
6. An electric tool, characterized in that the electric tool comprises a tool body, the tool body is connected with the pressure balance type deep sea piston floating trigger switch according to any one of claims 1-5, and a battery (13), a motor (14) and the shrapnel switch (11) of the tool body form an electric control loop.
7. The power tool of claim 6, wherein the top end of the housing (16) of the tool body is fixedly connected to the bottom end of the housing (10).
8. The electric tool according to claim 7, wherein the battery (13) and the motor (14) are installed in the housing (16), an end cover (15) is detachably connected to a bottom end opening of the housing (16), an avoidance hole is formed in the end cover (15), and a power output shaft of the motor (14) penetrates through the avoidance hole.
9. A power tool according to claim 8, wherein the end cap (15) is threadedly connected to the housing (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310750933.1A CN116798807B (en) | 2023-06-25 | 2023-06-25 | Pressure balance type deep sea piston floating trigger switch and electric tool thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310750933.1A CN116798807B (en) | 2023-06-25 | 2023-06-25 | Pressure balance type deep sea piston floating trigger switch and electric tool thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116798807A CN116798807A (en) | 2023-09-22 |
| CN116798807B true CN116798807B (en) | 2024-05-14 |
Family
ID=88039790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310750933.1A Active CN116798807B (en) | 2023-06-25 | 2023-06-25 | Pressure balance type deep sea piston floating trigger switch and electric tool thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116798807B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806811A (en) * | 2015-05-04 | 2015-07-29 | 中国海洋石油总公司 | Deep sea valve executing mechanism with bidirectional pressure dynamic balance compensation device |
| CN215266081U (en) * | 2021-03-12 | 2021-12-21 | 常州融和电子有限公司 | Hydraulic switch for electric appliance |
| CN217456304U (en) * | 2022-05-26 | 2022-09-20 | 陕西长岭电子科技有限责任公司 | Piston type pressure compensation device |
-
2023
- 2023-06-25 CN CN202310750933.1A patent/CN116798807B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806811A (en) * | 2015-05-04 | 2015-07-29 | 中国海洋石油总公司 | Deep sea valve executing mechanism with bidirectional pressure dynamic balance compensation device |
| CN215266081U (en) * | 2021-03-12 | 2021-12-21 | 常州融和电子有限公司 | Hydraulic switch for electric appliance |
| CN217456304U (en) * | 2022-05-26 | 2022-09-20 | 陕西长岭电子科技有限责任公司 | Piston type pressure compensation device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116798807A (en) | 2023-09-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101402396B (en) | Emergency release gear module of submersible | |
| CN108020438A (en) | The airtight sampler of mechanical hand-held type bottom sediment and its sampling and pressurize method | |
| JP2011527402A (en) | Wave actuated pump and means for connecting it to the seabed | |
| CN108231327B (en) | Electromagnet with adjustable suction force | |
| CN109733540B (en) | Emergency buoy releasing device of large-depth manned submersible | |
| CN108820174B (en) | Electromagnetic load rejection device of large-depth underwater autonomous vehicle | |
| CN111156220B (en) | Emergency reciprocating cable shearing device without built-in power source in deep sea | |
| CN111874193A (en) | Small multifunctional underwater robot and working method thereof | |
| GB2577393A (en) | Accumulator system | |
| CN116798807B (en) | Pressure balance type deep sea piston floating trigger switch and electric tool thereof | |
| CN105292409A (en) | Multifunctional underwater moving device | |
| CN203410612U (en) | Sequentially releasing device for deep seas | |
| WO2022133468A1 (en) | Alternative energy battery charging systems for well construction | |
| CN107933861B (en) | AUV retrieves and uses throwing rope ware | |
| CN109760804A (en) | One kind being based on pressure compensated oil sac formula deep-sea acoustic releaser | |
| CN109677573A (en) | A kind of deep-sea magnetic coupling transmission load rejection mechanism | |
| CN112357032A (en) | Integrated underwater propeller | |
| CN108343656B (en) | Deep sea self-adaptive clamping device and self-adaptive clamping method thereof | |
| JP6609145B2 (en) | Submersible actuator and submersible equipped with the same | |
| CN109973289B (en) | Floating body chain wheel wave power generation system for vacuum cylinder chain collection | |
| CN115892398B (en) | Deep sea remote clamping cutter and use method thereof | |
| CN205010446U (en) | Acoustic escapement device based on there is not sealed electro -magnet under water | |
| CN108860537A (en) | A kind of emergeney ejectioning device based on battery | |
| CN210338218U (en) | Miniature ocean monitoring buoy | |
| CN107448163B (en) | Deepwater gravity type spiral automatic connector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |