CN116374135A - Underwater linear motion mechanism and underwater equipment with same - Google Patents
Underwater linear motion mechanism and underwater equipment with same Download PDFInfo
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- CN116374135A CN116374135A CN202310205939.0A CN202310205939A CN116374135A CN 116374135 A CN116374135 A CN 116374135A CN 202310205939 A CN202310205939 A CN 202310205939A CN 116374135 A CN116374135 A CN 116374135A
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- 230000007246 mechanism Effects 0.000 title claims abstract description 28
- 239000007788 liquid Substances 0.000 claims abstract description 118
- 238000007789 sealing Methods 0.000 claims abstract description 83
- 230000009471 action Effects 0.000 claims abstract description 12
- 230000000149 penetrating effect Effects 0.000 claims abstract description 5
- 230000008859 change Effects 0.000 claims abstract description 4
- 230000006835 compression Effects 0.000 claims description 31
- 238000007906 compression Methods 0.000 claims description 31
- 210000004907 gland Anatomy 0.000 claims description 14
- 230000001105 regulatory effect Effects 0.000 claims description 12
- 230000000694 effects Effects 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 18
- 230000006872 improvement Effects 0.000 description 8
- 238000011161 development Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
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- 230000007613 environmental effect Effects 0.000 description 2
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- 230000002093 peripheral effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 241000282412 Homo Species 0.000 description 1
- 241000282414 Homo sapiens Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
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- 239000012530 fluid Substances 0.000 description 1
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- 230000004083 survival effect Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
- B63C11/00—Equipment for dwelling or working underwater; Means for searching for underwater objects
- B63C11/52—Tools specially adapted for working underwater, not otherwise provided for
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Abstract
The invention provides an underwater linear motion mechanism and underwater equipment with the same, relates to the technical field of underwater equipment, and mainly aims to provide an underwater linear motion mechanism which does not need power supply and electric signal control. The underwater linear motion mechanism comprises a depth fixing liquid inlet unit and a linear motion unit; a liquid flow channel is arranged in the depth-fixed liquid inlet unit, and can be switched between a connection state and a disconnection state along with the change of the ambient pressure; the linear motion unit comprises a sealing cylinder body and a push rod assembly; the sealing cylinder body is of a hollow structure, one end of the sealing cylinder body is communicated with the liquid flow channel, and the other end of the sealing cylinder body is provided with a push rod assembly in a penetrating way; when the flow channel is in an open state, ambient liquid can flow into the sealing cylinder body through the flow channel and push the push rod assembly to move towards the outer side of the sealing cylinder body. Under the action of the depth-fixing liquid inlet unit, passive driving of the equipment in a signal-free state can be realized under set underwater pressure, and the effect of pushing out the push rod assembly at a fixed depth is achieved.
Description
Technical Field
The invention relates to the technical field of underwater equipment, in particular to an underwater linear motion mechanism and underwater equipment with the same.
Background
Humans are currently facing three major problems of population, resources and environment. With the rapid development of economy of various countries and the continuous increase of world population, natural resources consumed by human beings are increasing, and resources on land are decreasing. Ocean development is imperative for survival and development. Ocean occupies 71% of the earth's surface area and has a volume of 14 hundred million cubic kilometers.
The underwater robot and the matched facilities of the underwater robot are the products of various modern high technologies and system integration thereof, and have special significance for ocean economy, ocean industry, ocean development and ocean high technology in China. When the unmanned robots such as AUV execute underwater tasks, as the cables supply energy and communicate the tasks, once the power supply system is separated or damaged due to accidents in the operation, the normal operation of the equipment, in particular to the electric push rod and the like, can be directly influenced, and the operation is seriously influenced.
In order to solve the above problems, it is necessary to develop an underwater apparatus capable of automatically performing the above operations at a set depth without using a power source and a signal so that the apparatus is not affected by a communication signal, a power source, etc. when performing a linear motion such as pushing of a push rod.
Disclosure of Invention
The invention aims to provide an underwater linear motion mechanism and underwater equipment with the same, so as to solve the problem that corresponding equipment in the prior art is extremely dependent on power supply and signals. The preferred technical solutions of the technical solutions provided by the present invention can produce a plurality of technical effects described below.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the invention provides an underwater linear motion mechanism, which comprises:
the device comprises a fixed-depth liquid inlet unit, wherein a liquid flow channel is arranged in the fixed-depth liquid inlet unit, and the liquid flow channel can be switched between a connection state and a disconnection state along with the change of the ambient pressure;
the linear motion unit comprises a sealing cylinder body and a push rod assembly; the sealing cylinder body is of a hollow structure, one end of the sealing cylinder body is communicated with the liquid flow channel, and the other end of the sealing cylinder body is provided with the push rod assembly in a penetrating way;
when the liquid flow channel is in an open state, ambient liquid can flow into the sealing cylinder body through the liquid flow channel and push the push rod assembly to move towards the outer side of the sealing cylinder body.
Under the action of the depth-setting liquid inlet unit, the liquid flow channel can be controlled to be communicated after reaching a proper position according to the ambient pressure (namely, the starting time of the mechanism is controlled), and at the moment, the liquid in the environment can flow into the linear motion unit through the liquid flow channel. The push rod assembly positioned in the sealing cylinder body can be pushed out relative to the sealing cylinder body under the action of inflow water pressure, so that passive driving of the equipment in a signal-free state is realized, and the effect of pushing out the push rod assembly at fixed depth is achieved.
On the basis of the technical scheme, the invention can be improved as follows.
As a further improvement of the invention, the depth-setting liquid inlet unit further comprises a sealing piece capable of adjusting the on-off of the liquid flow channel;
the liquid flow channel comprises a liquid inlet channel and a liquid discharge channel, the liquid inlet channel is communicated with the external environment, and the liquid discharge channel is communicated with the sealing cylinder; the closure is movable along an axis of the liquid inlet channel to regulate liquid flow from the liquid inlet channel to the liquid outlet channel.
When the external environment pressure (namely the water pressure) is smaller than the pressure of the sealing piece on the liquid inlet channel, the liquid inlet channel is in a sealing state, and the liquid flow channel is disconnected; when the external environment pressure is greater than the pressure of the sealing element on the liquid inlet channel, the sealing element can be far away from the liquid inlet channel under the pressure action, so that water flows into the sealing cylinder body through the liquid flow channel.
As a further improvement of the invention, the sealing piece comprises a valve core and a pressure regulating spring, wherein two ends of the valve core are respectively abutted against the liquid inlet channel and the pressure regulating spring, and the pressure regulating spring is always in a compressed state.
As a further improvement of the invention, the sealing cylinder body is also provided with a liquid outlet, and the liquid flowing into the sealing cylinder body can be discharged through the liquid outlet.
As a further improvement of the present invention, the push rod assembly includes a piston shaft, a first compression spring, and a telescopic shaft;
the piston shaft and the telescopic shaft are coaxially arranged, a first groove for accommodating the first compression spring is formed in one side, which points to the telescopic shaft, of the piston shaft, and a second groove for accommodating the piston shaft is formed in one end, close to the piston shaft, of the telescopic shaft; the piston shaft and the first compression spring are both positioned in the second groove, and the first compression spring is always in a compression state.
As a further improvement of the invention, a first limiting piece and a second limiting piece which are used for limiting the moving stroke of the telescopic shaft are also arranged in the sealing cylinder, and the first limiting piece and the second limiting piece are respectively positioned at two ends of the moving path of the telescopic shaft.
As a further improvement of the invention, a through groove is formed on the inner side wall of the sealing cylinder, a perforation is formed on the corresponding position of the telescopic shaft, and the piston shaft is recessed near the perforation and forms a guide groove for the first limiting part to be inserted;
in the initial state, the first limiting piece is arranged through the through groove and the through hole, and the telescopic shaft is fixedly arranged relative to the sealing cylinder body; when the piston shaft presses the first compression spring under the action of pressure, the first limiting piece can be separated from the through hole and is fixedly connected with the piston shaft through the guide groove.
As a further improvement of the invention, a second compression spring is fixedly arranged in the through groove, and the first limiting piece and the second compression spring are mutually extruded;
and/or, the first limiting piece is a sphere;
and/or the number of the guide grooves is consistent with the number of the perforations and is arranged in a one-to-one correspondence manner; alternatively, the guide groove is an annular groove provided around the circumferential side of the piston shaft.
As a further improvement of the invention, the second limiting piece is an inner ring gland formed in the sealing cylinder, and the inner ring gland is positioned in the direction of the moving path of the telescopic shaft; when the telescopic shaft extends outwards relative to the sealing cylinder body, the inner ring gland can be abutted with the telescopic shaft.
The invention also provides underwater equipment, which comprises the underwater linear motion mechanism.
Compared with the prior art, the technical scheme provided by the preferred embodiment of the invention has the following beneficial effects:
the device can utilize the underwater environment pressure, drives the push rod assembly through pressure difference and carries out linear movement. When the automatic pushing device is used, the ambient pressure value during opening can be determined according to the operation depth, and the sealing piece in the depth-fixed liquid inlet unit is adjusted according to the pressure difference, so that the pushing rod can be automatically pushed out after the external pressure reaches or exceeds the set pressure. In addition, the device adopts pressure difference to drive, and the thrust generated by the hydraulic pressure is larger, so that the push rod assembly can also generate larger thrust, thereby being capable of conveniently completing the required operation; after the single pushing operation is completed, the equipment can be reset by recovering the equipment and manually discharging the liquid in the sealed cylinder, and the equipment can be put into water again and repeatedly execute the operation; the corresponding limiting structure positioned in the sealing cylinder body can limit the push rod assembly, so that the push rod assembly can be prevented from being damaged due to exceeding a set displacement stroke, meanwhile, the push rod assembly can be prevented from being influenced by water pressure to enter the sealing cylinder body in the equipment submergence process, and the sealing cylinder body is ensured to have good sealing performance all the time.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the overall structure of the underwater linear motion mechanism of the present invention;
FIG. 2 is a schematic cross-sectional view of FIG. 1;
FIG. 3 is a schematic diagram of the use of a depth-determining liquid inlet unit in the underwater linear motion mechanism of the present invention;
FIG. 4 is a schematic view of the initial state of the linear motion unit in the underwater motion mechanism of the present invention;
fig. 5 is a schematic view showing an extended state of a linear motion unit in the underwater implementation motion mechanism of the present invention.
In the figure: 1. a depth setting liquid inlet unit; 11. a flow channel; 12. a closure; 121. a valve core; 122. a pressure regulating spring; 13. a valve body; 14. an adjusting nut; 2. sealing the cylinder; 21. a liquid outlet; 22. penetrating a groove; 23. a side plate; 24. an output cover; 25. a positioning pin; 26. an outer ring gland; 27. a Gelai circle; 28. an O-ring; 29. a transfer cap; 3. a piston shaft; 31. a first groove; 32. a guide groove; 4. a first compression spring; 5. a telescopic shaft; 51. a second groove; 52. perforating; 53. a guide ring; 6. a first limiting member; 7. a second limiting piece; 8. and a second compression spring.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, based on the examples herein, which are within the scope of the invention as defined by the claims, will be within the scope of the invention as defined by the claims.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention can be understood as appropriate by those of ordinary skill in the art.
The technical scheme of the invention is specifically described below with reference to the accompanying drawings:
the invention provides an underwater linear motion mechanism, which mainly comprises a fixed-depth liquid inlet unit 1 and a linear motion unit, as shown in figure 1, wherein the fixed-depth liquid inlet unit 1 can enter a communicating state only after running to a set depth by utilizing the pressure difference principle; the linear motion unit is connected with the depth-fixed liquid inlet unit 1, and the depth-fixed liquid inlet unit 1 in a communication state can pour the environmental water into the linear motion unit, so that the purpose of pushing out the push rod assembly at a fixed depth is achieved.
Specifically, a liquid flow channel 11 is arranged in the depth-fixing liquid inlet unit 1, and the liquid flow channel 11 can be switched between a connection state and a disconnection state along with the change of the ambient pressure; the linear motion unit comprises a sealing cylinder body 2 and a push rod assembly; the sealing cylinder body 2 is of a hollow structure, one end of the sealing cylinder body is communicated with the liquid flow channel 11, and the other end of the sealing cylinder body is provided with a push rod assembly in a penetrating way; when the flow channel 11 is in an open state, ambient fluid can flow into the seal cylinder 2 through the flow channel 11 and push the push rod assembly to move toward the outside of the seal cylinder 2.
Under the action of the depth-fixing liquid inlet unit 1, the liquid flow channel 11 can be controlled to be communicated after reaching a proper position according to the ambient pressure, and at the moment, the liquid in the environment can flow into the linear motion unit through the liquid flow channel 11. The push rod assembly positioned in the sealing cylinder body 2 can be pushed out relative to the sealing cylinder body 2 under the action of inflow water pressure, so that 'passive' driving of the equipment in a signal-free state is realized, and the effect of pushing out the push rod assembly at fixed depth is achieved.
It should be noted that, compared with the conventional device, the underwater linear motion mechanism can realize self-driving by utilizing pressure difference under the conditions of no signal source control, no power or other device driving. Compared with the traditional equipment, the structure design has better and stable use effect and higher success rate, and is less influenced by the underwater working environment.
By "passive" in the foregoing is meant that no signal control is required, nor is electrical drive required. The device is driven by a pressure difference determined by the water pressure, which is determined by the submergence depth, so that the device can realize linear motion at a set height. The thrust generated by the hydraulic pressure is larger, and the push rod can generate thrust not less than 500N. The actual direction of the thrust can be adjusted according to the requirement, and the thrust can be pushed horizontally, upwards, downwards or obliquely.
Specifically, the fixed depth liquid inlet unit 1 is a direct acting overflow valve. The depth-fixing liquid inlet unit 1 comprises a valve body 13, wherein the liquid flow channel 11 is formed in the valve body 13, one end of the valve body 13 is provided with a liquid inlet communicated with the liquid flow channel 11, and one side of the valve body is provided with a liquid outlet communicated with the liquid flow channel 11. The depth metering liquid inlet unit 1 also comprises a sealing piece 12 which can adjust the on-off state of the liquid flow channel 11. The liquid flow channel 11 comprises a liquid inlet channel and a liquid discharge channel, the liquid inlet channel is communicated with the external environment, and the liquid discharge channel is communicated with the sealing cylinder 2; the closure member 12 is movable along the axis of the feed channel to regulate the flow of liquid from the feed channel to the drain channel.
When the external environment pressure (namely the water pressure) is smaller than the pressure of the sealing piece 12 to the liquid inlet channel, the liquid inlet channel is in a sealing state, and the liquid flow channel 11 is disconnected; when the external environment pressure is greater than the pressure of the sealing element on the liquid inlet channel, the sealing element 12 can be far away from the liquid inlet channel under the pressure so that water flows into the sealing cylinder 2 through the liquid flow channel 11.
Specifically, the liquid flow channel 11 is L-shaped, the sealing member 12 coaxially arranged with the liquid inlet channel is located at the side of the liquid inlet channel, and a chamber capable of accommodating the sealing member 12 and communicating with the liquid inlet channel is formed at the outer peripheral side of the sealing member, as shown in fig. 3, and the arrow direction in the drawing is the flowing direction of the liquid.
As an alternative embodiment, the sealing member 12 includes a valve core 121 and a pressure regulating spring 122, two ends of the valve core 121 are respectively abutted against the liquid inlet channel and the pressure regulating spring 122, and the pressure regulating spring 122 is always in a compressed state.
The depthkeeping feed unit 1 further comprises an adjusting nut 14, the adjusting nut 14 being located on one side of the valve body 13, said closure member 12 being arranged close to the adjusting nut 14. After the pressure regulating spring 122 is selected, the desired pressure value can be regulated and calibrated by adjusting the nut 14. When the water pressure is greater than the calibration pressure, the overflow valve is opened, and at the moment, the liquid in the environmental water body can flow into the linear motion unit through the overflow valve and push the push rod assembly to act.
It should be noted that, in order to ensure that the push rod assembly can move under the driving of the water pressure, the tightness of the sealing cylinder 2 needs to be ensured, so that the situation that the water body enters the sealing cylinder 2 through the connection part of the push rod assembly and the sealing cylinder 2 is avoided.
Specifically, an output cover 24 and an outer ring gland 26 are fixedly arranged on one side of the sealing cylinder 2 away from the fixed-depth liquid inlet unit 1, wherein the outer ring gland 26 is fixedly arranged through a locating pin 25. The push rod assembly extends out relative to the sealing cylinder 2 through the output cover 24 and the outer ring gland 26, the push rod assembly is connected with the output cover 24 through the Gelai ring 27, and an O-shaped ring 28 is arranged between the output cover 24 and the outer ring gland 26. The above structure can effectively ensure the sealing effect of the sealing cylinder 2.
In order to fixedly connect the fixed-depth liquid inlet unit 1 and the linear motion unit, in this embodiment, the valve body 13 is connected to an adapter cap 29 fixedly disposed on the side of the sealing cylinder 2 by screwing. The adapter cap 29 can be fixedly arranged on the sealing cylinder 2 by a jackscrew. The structure of which is shown in figure 2.
The structure and the working principle of the linear motion unit are described below:
as shown in fig. 4-5, a portion of the push rod assembly extends relative to the seal cartridge 2, with the remainder being located within the seal cartridge 2. The push rod assembly comprises a piston shaft 3, a first compression spring 4 and a telescopic shaft 5; wherein the piston shaft 3 and the telescopic shaft 5 are coaxially arranged, a first groove 31 for accommodating the first compression spring 4 is formed on one side of the piston shaft 3, which is directed to the telescopic shaft 5, and a second groove 51 for accommodating the piston shaft 3 is formed on one end of the telescopic shaft 5, which is close to the piston shaft 3; the piston shaft 3 and the first compression spring 4 are both located in the second recess 51 and the first compression spring 4 is always in a compressed state.
Taking the direction of fig. 4 as an example, at this time, the upper part of the piston shaft 3 can be connected with the fixed-depth liquid inlet unit 1, and the liquid flowing out of the fixed-depth liquid inlet unit 1 can press the piston shaft 3 downwards and push the piston shaft 3 to move downwards along the axial direction of the piston shaft. In this process, the piston shaft 3 can press the first compression spring 4, and since the piston shaft 3 and the first compression spring 4 are both located in the second groove 51 of the telescopic shaft 5, the telescopic shaft 5 is also subjected to downward pressure provided by water pressure, and thus protrudes outwards relative to the sealing cylinder 2.
In this embodiment, the outer side wall of the telescopic shaft 5 can be bonded to the inner side wall of the seal cylinder 2. In order to ensure that the telescopic shaft 5 can slide smoothly with respect to the seal cylinder 2, a guide ring 53 is provided therebetween.
In order to further limit the stroke of the push rod assembly and avoid the push rod assembly from being randomly moved under the influence of water pressure, as an alternative embodiment, a first limiting piece 6 and a second limiting piece 7 for limiting the moving stroke of the telescopic shaft 5 are further arranged in the sealing cylinder 2, and the first limiting piece 6 and the second limiting piece 7 are respectively positioned at two ends of the moving path of the telescopic shaft 5.
Specifically, the inner side wall of the sealing cylinder 2 is formed with a through slot 22, a through hole 52 is formed at a corresponding position of the telescopic shaft 5, and the piston shaft 3 is recessed near the through hole 52 and forms a guide slot 32 into which the first limiting member 6 can be partially inserted. In the initial state, the first limiting piece 6 is arranged through the through groove 22 and the through hole 52, and the telescopic shaft 5 is fixedly arranged relative to the sealing cylinder 2, as shown in fig. 4; when the piston shaft 3 presses the first compression spring 4 under the action of water pressure, the first limiting member 6 can be separated from the through hole 52 and fixedly connected with the piston shaft 3 through the guide groove 32, as shown in fig. 5, and at this time, the telescopic shaft 5 and the piston shaft 3 can be mutually fixed and synchronously move downwards relative to the sealing cylinder 2 under the action of the first limiting member 6.
In order to ensure that the first limiting member 6 can be connected with the piston shaft 3 through the guide groove 32 and ensure that the telescopic shaft 5 and the piston shaft 3 can synchronously displace, and the operation switching from fig. 4 to fig. 5 is realized, as an alternative embodiment, a second compression spring 8 is fixedly arranged in the through groove 22, and the first limiting member 6 and the second compression spring 8 are mutually extruded (can also be considered as the mutual abutting of the two). Therefore, when the piston shaft 3 moves downward relative to the telescopic shaft 5 until the area of the guide groove 32 is exposed, the first limiting member 6 can move toward the guide groove 32 under the extrusion action of the second compression spring 8, at this time, the first limiting member 6 can be separated from the through groove 22 and enter the guide groove 32, and can be separated from the second compression spring 8 along with the continuous displacement of the telescopic shaft 5 and the piston shaft 3 under the action of water pressure, and the second compression spring 8 is always located in the through groove 22.
Specifically, the above-mentioned through hole 52 is formed at the second groove 51, at which time it is ensured that the piston shaft 3 can communicate with the through hole 52 through the guide groove 32 thereon by a certain displacement. In addition, in order to ensure smooth operation of the apparatus, the number of the through slots 22 is set to be at least two and the through slots 22 and the perforations 52 are identical in number and arranged in one-to-one correspondence.
In this embodiment, the first stopper 6 is a sphere. The spherical configuration facilitates the movement of the first stop member 6 relative to each other between the through slot 22, the aperture 52 and the guide slot 32. In order to further slide the movement of the first stopper 6, the lower side wall of the guide groove 32 is provided with a slope inclined toward the outer peripheral side.
In the present embodiment, the above-described guide groove 32 is an annular groove formed by recessing a part of the circumferential side of the piston shaft 3 inward. Alternatively, the number of guide grooves 32 may be provided in correspondence with the number of perforations 52 and arranged one-to-one.
In order to facilitate the installation of the first limiting member 6, a side plate 23 is disposed outside the through groove 22. When the side plate 23 is removed, the second compression spring 8 and the first stopper 6 can be easily installed and removed through the through groove 22.
Similarly, the second limiting part 7 is an inner ring gland formed inside the sealing cylinder 2, and the inner ring gland is positioned in the direction of the moving path of the telescopic shaft 5, as shown in fig. 4-5; when the telescopic shaft 5 extends outwards relative to the sealing cylinder 2, the inner ring gland can be abutted with the telescopic shaft 5.
In this embodiment, the number of the second limiting members 7 is at least two, and all the second limiting members 7 are uniformly distributed around the telescopic shaft 5.
Through the structure, single linear motion can be realized.
When the equipment performs the above operation and is recovered, for the convenience of realizing the repeated reason of the equipment, as an alternative embodiment, the sealing cylinder 2 is further provided with a liquid outlet 21, and the liquid flowing into the sealing cylinder 2 can be discharged through the liquid outlet 21.
Note that a drain plug is provided at the drain port 21. When executing the operation, the drain plug is arranged at the liquid outlet 21; after the operation is completed and the equipment is recovered, the drain plug can be removed by pulling out or rotating. At this time, the liquid flowing into the seal cylinder 2 can be discharged through the liquid discharge port 21 by manually pressing the push rod assembly, and at this time, the system is restored to the original state.
The invention also provides underwater equipment, which comprises the underwater linear motion mechanism. The underwater linear motion mechanism can be used for carrying pressure load (such as lead blocks and the like) carried by equipment or throwing materials or equipment to be thrown when in use.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The underwater linear motion mechanism is characterized by comprising:
the device comprises a fixed-depth liquid inlet unit, wherein a liquid flow channel is arranged in the fixed-depth liquid inlet unit, and the liquid flow channel can be switched between a connection state and a disconnection state along with the change of the ambient pressure;
the linear motion unit comprises a sealing cylinder body and a push rod assembly; the sealing cylinder body is of a hollow structure, one end of the sealing cylinder body is communicated with the liquid flow channel, and the other end of the sealing cylinder body is provided with the push rod assembly in a penetrating way;
when the liquid flow channel is in an open state, ambient liquid can flow into the sealing cylinder body through the liquid flow channel and push the push rod assembly to move towards the outer side of the sealing cylinder body.
2. The underwater linear motion mechanism of claim 1, wherein the depth-setting liquid inlet unit further comprises a closure member capable of adjusting the on-off of the liquid flow channel;
the liquid flow channel comprises a liquid inlet channel and a liquid discharge channel, the liquid inlet channel is communicated with the external environment, and the liquid discharge channel is communicated with the sealing cylinder; the closure is movable along an axis of the liquid inlet channel to regulate liquid flow from the liquid inlet channel to the liquid outlet channel.
3. The underwater linear motion mechanism of claim 2, wherein the closure member comprises a valve core and a pressure regulating spring, two ends of the valve core are respectively abutted against the liquid inlet channel and the pressure regulating spring, and the pressure regulating spring is always in a compressed state.
4. The underwater linear motion mechanism of claim 1, wherein a liquid outlet is further provided on the sealing cylinder, and the liquid flowing into the sealing cylinder can be discharged through the liquid outlet.
5. The underwater linear motion mechanism of claim 1, wherein the pushrod assembly comprises a piston shaft, a first compression spring, and a telescoping shaft;
the piston shaft and the telescopic shaft are coaxially arranged, a first groove for accommodating the first compression spring is formed in one side, which points to the telescopic shaft, of the piston shaft, and a second groove for accommodating the piston shaft is formed in one end, close to the piston shaft, of the telescopic shaft; the piston shaft and the first compression spring are both positioned in the second groove, and the first compression spring is always in a compression state.
6. The underwater linear motion mechanism of claim 5, wherein a first limiting member and a second limiting member for limiting the movement travel of the telescopic shaft are further arranged in the sealing cylinder, and the first limiting member and the second limiting member are respectively positioned at two ends of the movement path of the telescopic shaft.
7. The underwater linear motion mechanism of claim 6, wherein a through slot is formed on the inner side wall of the sealing cylinder, a through hole is formed on the corresponding position of the telescopic shaft, and the piston shaft is recessed near the through hole and forms a guide slot into which the first limiting part can be partially inserted;
in the initial state, the first limiting piece is arranged through the through groove and the through hole, and the telescopic shaft is fixedly arranged relative to the sealing cylinder body; when the piston shaft presses the first compression spring under the action of pressure, the first limiting piece can be separated from the through hole and is fixedly connected with the piston shaft through the guide groove.
8. The underwater linear motion mechanism of claim 7, wherein a second compression spring is fixedly arranged in the through groove, and the first limiting piece and the second compression spring are mutually extruded;
and/or, the first limiting piece is a sphere;
and/or the number of the guide grooves is consistent with the number of the perforations and is arranged in a one-to-one correspondence manner; alternatively, the guide groove is an annular groove provided around the circumferential side of the piston shaft.
9. The underwater linear motion mechanism of claim 7, wherein the second stopper is an inner ring gland formed inside the seal cylinder, the inner ring gland being located in a direction along which the telescopic shaft movement path is located; when the telescopic shaft extends outwards relative to the sealing cylinder body, the inner ring gland can be abutted with the telescopic shaft.
10. An underwater apparatus comprising an underwater linear motion mechanism as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310205939.0A CN116374135A (en) | 2023-03-06 | 2023-03-06 | Underwater linear motion mechanism and underwater equipment with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310205939.0A CN116374135A (en) | 2023-03-06 | 2023-03-06 | Underwater linear motion mechanism and underwater equipment with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116374135A true CN116374135A (en) | 2023-07-04 |
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| CN202310205939.0A Pending CN116374135A (en) | 2023-03-06 | 2023-03-06 | Underwater linear motion mechanism and underwater equipment with same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117191471A (en) * | 2023-08-30 | 2023-12-08 | 广州大学 | Water quality acquisition equipment and method capable of being carried on underwater robot |
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| CN103935490A (en) * | 2014-04-28 | 2014-07-23 | 哈尔滨工程大学 | Safety valve type underwater fixed-depth releasing device |
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| CN110778567A (en) * | 2019-11-01 | 2020-02-11 | 北京特种机械研究所 | Hydraulic cylinder stroke tail end buffering braking method |
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Cited By (1)
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| CN117191471A (en) * | 2023-08-30 | 2023-12-08 | 广州大学 | Water quality acquisition equipment and method capable of being carried on underwater robot |
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