CN112046715A - Buoyancy adjusting device, underwater vehicle and oil injection method of buoyancy adjusting device - Google Patents
Buoyancy adjusting device, underwater vehicle and oil injection method of buoyancy adjusting device Download PDFInfo
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- CN112046715A CN112046715A CN201910491163.7A CN201910491163A CN112046715A CN 112046715 A CN112046715 A CN 112046715A CN 201910491163 A CN201910491163 A CN 201910491163A CN 112046715 A CN112046715 A CN 112046715A
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63G—OFFENSIVE OR DEFENSIVE ARRANGEMENTS ON VESSELS; MINE-LAYING; MINE-SWEEPING; SUBMARINES; AIRCRAFT CARRIERS
- B63G8/00—Underwater vessels, e.g. submarines; Equipment specially adapted therefor
- B63G8/14—Control of attitude or depth
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63G—OFFENSIVE OR DEFENSIVE ARRANGEMENTS ON VESSELS; MINE-LAYING; MINE-SWEEPING; SUBMARINES; AIRCRAFT CARRIERS
- B63G8/00—Underwater vessels, e.g. submarines; Equipment specially adapted therefor
- B63G8/14—Control of attitude or depth
- B63G8/24—Automatic depth adjustment; Safety equipment for increasing buoyancy, e.g. detachable ballast, floating bodies
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
- Y02A20/204—Keeping clear the surface of open water from oil spills
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- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The application discloses buoyancy adjusting device, underwater vehicle and buoyancy adjusting device's oiling method, buoyancy adjusting device includes: the shell comprises a guide section, and a guide cavity is arranged in the guide section; the transmission assembly is arranged in the guide cavity, the transmission direction of the transmission assembly is the guide direction of the guide cavity, the transmission assembly comprises a transmission screw and a transmission nut screwed on the transmission screw, and the transmission nut is in rotation-stopping sliding fit with the inner side surface of the guide cavity. The application provides a buoyancy adjusting device, underwater vehicle and buoyancy adjusting device's oiling method, through the medial surface sliding fit that ends of drive nut and direction chamber, not only realized that the drive nut can not rotate and along the slidable purpose in the direction of transmission in the direction chamber, but also reduced buoyancy adjusting device's structural quantity and reduced the volume of casing, optimized buoyancy adjusting device's structural design.
Description
Technical Field
The invention relates to the technical field of underwater operation equipment, in particular to the technical field of underwater navigation equipment, and particularly relates to a buoyancy adjusting device, an underwater vehicle and an oil injection method of the buoyancy adjusting device.
Background
An underwater vehicle (also called as an underwater robot) is a device which can navigate underwater by remote control or automatic control and is used for replacing divers or small manned submarines to carry out underwater operations such as deep sea exploration, lifesaving and the like. Underwater vehicles generally control their heave through buoyancy adjustment devices. The buoyancy adjusting device comprises a shell and an oil bag, and an adjusting device for adjusting the volume of the oil bag is arranged in an inner cavity of the shell. The adjusting device generally comprises a lead screw transmission mechanism, and the size of the oil sac is adjusted through the reciprocating motion of the lead screw transmission mechanism, so that the purpose of controlling the buoyancy of the underwater vehicle is achieved.
The screw rod transmission mechanism comprises a shell, a screw rod transmission mechanism and a screw rod, wherein a rotation limiting support frame is fixedly arranged in an inner cavity of the shell, a mounting cavity is formed in the rotation limiting support frame, and a screw rod in the screw rod transmission mechanism is positioned in the mounting cavity of the rotation limiting support frame. And a rotation limiting assembly is arranged between the rotation limiting support frame and the nut of the screw rod to limit the rotation of the nut. Due to the existence of the rotation limiting support frame, the structure number of the buoyancy adjusting device is increased, the size of the shell is increased, and the resistance of the buoyancy adjusting device in water movement is increased.
Disclosure of Invention
In view of the above-mentioned drawbacks and deficiencies of the prior art, it would be desirable to provide a buoyancy adjustment device, an underwater vehicle, and a method of oiling a buoyancy adjustment device.
In a first aspect, the present application provides a buoyancy adjusting device comprising:
the shell comprises a guide section, and a guide cavity is arranged in the guide section;
the transmission assembly is arranged in the guide cavity, the transmission direction of the transmission assembly is the guide direction of the guide cavity, the transmission assembly comprises a transmission screw and a transmission nut screwed on the transmission screw, and the transmission nut is in rotation-stopping sliding fit with the inner side surface of the guide cavity.
Further, the inner side of the guide cavity is at least partially matched in shape with the peripheral side of the drive nut to limit rotation of the drive nut.
Further, still include:
the output shaft of the driving motor is in transmission connection with the transmission screw;
the displacement measuring device is used for measuring the displacement of the transmission nut;
and the controller is respectively connected with the driving motor and the angular displacement sensor and is used for controlling the driving motor to stop when the displacement of the transmission nut reaches a preset value.
Furthermore, the shell also comprises an oil cabin section, the oil cabin section is positioned on one side of the guide section, the adjacent ends of the guide section and the oil cabin section are fixedly connected, a piston cavity is arranged in the oil cabin section, and the piston cavity is communicated with the guide cavity;
the buoyancy adjusting device further includes:
the piston piece is arranged in the piston cavity in a sliding mode, and the transmission nut is connected with the piston piece to drive the piston piece to move in the piston cavity in a reciprocating mode;
the oil bag is positioned on one side of the oil cabin section, which is far away from the guide section, and is communicated with the piston cavity.
Further, the oil tank section is detachably and fixedly connected with the guide section.
Furthermore, the transmission nut comprises a nut part and a connecting sleeve part, the connecting sleeve part is positioned on one side of the nut part close to the oil tank section, the adjacent ends of the nut part and the connecting sleeve part are fixedly connected, the nut part is screwed on the transmission screw rod, the connecting sleeve part is movably sleeved on the transmission screw rod, and one end, far away from the nut part, of the connecting sleeve part is connected with the piston part to drive the piston part to reciprocate;
the connecting sleeve part is provided with a limiting section, and the inner side surface of the guide cavity is matched with the peripheral side surface of the limiting section in shape so as to limit the rotation of the transmission nut.
Further, the shape of the peripheral side surface of the limiting section is a polygon or an ellipse.
The travel switch is arranged on the shell, and a contact of the travel switch is positioned in one end, close to the guide cavity, of the piston cavity;
the controller is connected with the travel switch and is used for controlling the driving motor to stop when the piston piece is contacted with the contact of the travel switch.
Furthermore, the piston piece comprises a first end face facing the oil bag and a second end face arranged opposite to the first end face, an oil filling hole is formed in the piston piece, and two ends of the oil filling hole penetrate through the first end face and the second end face respectively;
the oil filling hole is internally provided with a detachable sealing plug in a plugging way.
Furthermore, a screw hole section and a sealing section are arranged in the axial direction of the oil filling hole, and the sealing section is positioned on one side, far away from the oil bag, of the screw hole section;
the sealing plug comprises a screw portion and a sealing portion, a sealing ring is arranged in the sealing portion, the screw portion is in threaded connection with the screw hole section, the sealing portion is located in the sealing section, and the sealing ring is in sealing fit with the inner side face of the sealing section.
In a second aspect, the present application also provides an underwater vehicle comprising a buoyancy adjustment device.
In a third aspect, the present application further provides an oil injection method for a buoyancy adjusting device, including:
separating the guide section from the cargo tank section to expose the second end surface of the piston member;
a sealing plug in an oil injection hole on the piston piece is taken down, and oil is injected into the piston cavity through the oil injection hole;
after the oil injection is finished, the sealing plug plugs the oil injection hole, and then the guide section is fixedly connected with the oil cabin section.
The utility model provides a buoyancy adjusting device and underwater vehicle, through only stopping between the medial surface in transmission nut and direction chamber and revolve sliding fit, not only realized that the transmission nut can not rotate and along transmission direction slidable purpose in the direction chamber, but also reduced buoyancy adjusting device's structure quantity and reduced the volume of casing, optimized buoyancy adjusting device's structural design.
The application also provides an oiling method of the buoyancy adjusting device, and the oiling method is characterized in that the oiling hole is formed in the piston piece, when the guide section is separated from the oil cabin section, the oiling is carried out on the piston cavity through the oiling hole, and the guide section is fixedly connected with the oil cabin section after the oiling is finished, so that the operation convenience of oiling the buoyancy adjusting device is improved, and the oiling amount of the buoyancy adjusting device can be increased.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
FIG. 1 is a schematic structural diagram of a buoyancy regulating device provided in an embodiment of the present application;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is an exploded view of the buoyancy regulating device according to an embodiment of the present disclosure;
FIG. 4 is a schematic structural diagram of a transmission mechanism provided in an embodiment of the present application;
fig. 5 is a schematic structural view of a connection sleeve portion according to an embodiment of the present disclosure;
FIG. 6 is a schematic structural diagram of a guide section provided in an embodiment of the present application;
FIG. 7 is a schematic structural diagram of a tank section provided by an embodiment of the present application;
FIG. 8 is a schematic structural diagram of an oil hatch cover provided in an embodiment of the present application;
fig. 9 is a schematic structural diagram of a motor mounting section provided in an embodiment of the present application;
FIG. 10 is an exploded view of the piston assembly provided by an embodiment of the present application;
FIG. 11 is a flow chart of a method for oiling provided by an embodiment of the present application;
fig. 12 is a schematic view illustrating a guiding section and a cargo hold section in a separated state in a method for oiling according to an embodiment of the present application.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1 to 3, an embodiment of the present application provides a buoyancy adjusting device, including:
the device comprises a shell, wherein the shell comprises a guide section 110, and a guide cavity 111 is arranged in the guide section 110;
the transmission assembly is arranged in the guide cavity 111, the transmission direction of the transmission assembly is the guide direction of the guide cavity 111, the transmission assembly comprises a transmission screw 210 and a transmission nut 220 screwed on the transmission screw 210, and the transmission nut 220 is in rotation-stopping sliding fit with the inner side surface of the guide cavity 111.
In this embodiment, the housing includes a guide section 110, and the guide section 110 has a guide cavity 111 therein. A transmission mechanism is arranged in the shell and comprises a transmission assembly, and the transmission assembly is positioned in the guide cavity 111. The drive assembly includes a drive screw 210, and the axial direction of the drive screw 210 is the guide direction of the guide cavity 111. The driving assembly further includes a driving nut 220, and the driving nut 220 is threaded on the driving screw 210 and moves in the guide direction in the guide chamber 111. The driving nut 220 is in sliding fit with the inner side surface of the guide cavity 111 in a rotation-stopping manner, that is, the driving nut 220 cannot rotate in the guide cavity 111 and can slide in the driving direction. The volume of the oil pocket 130 is changed by the driving nut 220 sliding reciprocally in the guiding direction.
In this embodiment, the transmission nut 220 is in sliding fit with the inner side surface of the guide cavity 111 in a rotation stopping manner, so that the purpose that the transmission nut 220 cannot rotate in the guide cavity 111 and can slide in the transmission direction is achieved, the structural number of the buoyancy adjusting device is reduced, the size of the shell is reduced, and the structural design of the buoyancy adjusting device is optimized.
In certain preferred embodiments, the inner side of the guide cavity 111 and the peripheral side of the drive nut 220 are at least partially matched in shape to limit rotation of the drive nut 220.
In the preferred embodiment, the rotation-stopping sliding fit between the driving nut 220 and the inner side surface of the guiding cavity 111 is implemented as follows: the inner side of the guide cavity 111 is at least partially form-matched with the circumferential side of the drive nut 220, wherein the form-matched portions form an interlock in the circumferential direction, thereby restricting the drive nut 220 from rotating in the guide cavity 111. The portion where the inner side surface of the guide chamber 111 and the peripheral side surface of the drive nut 220 match in shape may be polygonal.
In certain preferred embodiments, the inner side of the guide cavity 111 matches in shape at least a portion of the circumferential side on the drive nut 220 to limit rotation of the drive nut 220.
In the preferred embodiment, the peripheral side surface of part of the transmission nut 220 is matched with the inner side surface of the guide cavity 111 in shape, so that the whole peripheral side surface of part of the transmission nut 220 is in limit fit with the inner side surface of the guide cavity 111, the limit contact area between the transmission nut 220 and the guide cavity 111 is increased, the limit strength of the guide cavity 111 to the transmission nut 220 is increased, and the service lives of the shell and the transmission nut 220 are further prolonged.
In some preferred embodiments, the housing further includes a cargo tank section 120, the cargo tank section 120 is located at one side of the guiding section 110, the guiding section 110 is fixedly connected with an adjacent end of the cargo tank section 120, a piston cavity 121 is arranged in the cargo tank section 120, and the piston cavity 121 is communicated with the guiding cavity 111;
the buoyancy adjusting device further includes:
a piston member 230, the piston member 230 being slidably disposed in the piston chamber 121, and a driving nut 220 connected to the piston member 230 for driving the piston member 230 to reciprocate in the piston chamber 121;
and the oil pocket 130 is positioned on one side of the oil pocket section 120 far away from the guide section 110 and is communicated with the piston cavity 121.
In the preferred embodiment, the housing further comprises a sump section 120 and an oil bladder 130, and the guide section 110 is located between the sump section 120 and the oil bladder 130. The oil pocket 130 is fixedly connected with one end of the oil cabin section 120 far away from the guide section 110, and the oil pocket 130 is communicated with the piston cavity 121 in the oil cabin section 120 to realize the oil liquid flow between the two. The oil pocket 130 has elasticity to achieve the change in volume, and may preferably be a rubber oil pocket or the like. The piston member 230 is installed in the piston chamber 121, and the driving nut 220 is connected to the piston member 230 to drive the piston member 230 to reciprocate in the piston chamber 121. The reciprocating movement of the piston member 230 in the piston chamber 121 changes the amount of oil in the oil bladder 130, thereby changing the volume of the oil bladder 130. For example, when piston member 230 moves in a direction to approach oil bladder 130, the amount of oil in oil bladder 130 increases, so that the volume of oil bladder 130 becomes larger; when the piston member 230 moves toward the guide section 110, a part of the oil in the oil pocket 130 flows back into the piston chamber 121 under the pressure, that is, the oil in the oil pocket 130 decreases, so that the volume of the oil pocket 130 becomes smaller.
Referring to fig. 7-8, the cargo section 120 includes a cargo body 122 and a cargo lid 123, the cargo lid 123 being located at an end of the cargo body 122 adjacent to the oil bladder 130. The oil galley cover 123 is provided with a threaded hole 1231 that communicates with the piston cavity 121. The oil bladder 130 has an opening portion through which oil can be supplied, the opening portion is provided with a hollow threaded pipe 131, and the threaded pipe 131 is screwed to the threaded hole 1231 in the oil hatch 123. The oil bag 130 is connected with the oil hatch cover 123 in a threaded manner, so that the sealing performance between the oil bag 130 and the oil hatch cover 123 is good, the oil bag 130 can be detached from the oil hatch cover 123, and the oil bag 130 can be replaced conveniently, the threaded hole 1231 can be cleaned conveniently, and the like. The cargo cover 123 is detachably fixedly attached to the cargo tank main body 122 so as to facilitate detachment of the cargo cover 123 from the cargo tank main body 122. For example, the inner side surface of the end of the oil tank body 122 close to the oil tank cover 123 is provided with internal threads, the side of the oil tank cover 123 far away from the oil bag 130 is provided with an annular protrusion 1232, the outer circumferential surface of the protrusion 1232 is provided with external threads which are in threaded fit with the internal threads on the oil tank body 122, and the oil tank cover 123 is in threaded fit with the oil tank body 122.
In addition, a limiting protrusion 1221 is convexly arranged on the inner side surface of the end of the oil tank main body 122 far away from the oil bag 130, and the limiting protrusion 1221 is in limiting fit with the piston member 230 in the moving direction of the piston member 230 to prevent the piston member 230 from being separated from the piston chamber 121 from the end of the piston chamber 121 far away from the oil bag 130. Among them, the limiting projection 1221 may preferably be in an annular convex shape to improve the limiting strength of the limiting projection 1221 to the piston member 230.
In certain preferred embodiments, the connection between the tank section 120 and the guide section 110 is detachably fixed, so that the tank section 120 and the guide section 110 can be separated to fill the piston cavity 121 with oil. Wherein the connection means is detachably fixed, such as but not limited to bolt connection and the like.
Referring to fig. 9, in some preferred embodiments, the buoyancy adjusting device further comprises:
the output shaft of the driving motor 240 is in transmission connection with the transmission screw 210;
a displacement measuring device for measuring the displacement of the drive nut 220;
and the controller is respectively connected with the driving motor 240 and the angular displacement sensor and is used for controlling the driving motor 240 to stop when the displacement of the transmission nut 220 reaches a preset value.
In the preferred embodiment, the housing further includes a motor mounting section 140, a mounting cavity 141 is provided in the motor mounting section 140, and the driving motor 240, the controller and a part of the displacement measuring device are disposed in the mounting cavity 141. The motor mounting section 140 is located on a side of the guide section 110 away from the oil pocket 130 and is detachably and fixedly connected with the guide section 110 to facilitate mounting of the transmission mechanism in the housing. The motor mounting section 140 and the guide section 110 are detachably and fixedly connected by, for example, but not limited to, bolts. Wherein, the installation cavity 141 of the motor installation section 140 is communicated with the guide cavity 111 of the guide section 110. An output shaft of the drive motor 240 is drivingly connected to the drive screw 210 to drive the drive screw 210 in rotation. Wherein, the output shaft of the driving motor 240 and the transmission screw 210 can be in transmission connection through a coupler.
The buoyancy adjusting device further comprises a displacement measuring device and a controller, wherein the displacement measuring device is used for measuring the displacement of the transmission nut 220, the controller judges whether the displacement of the transmission nut 220 reaches a preset value, and controls the driving motor 240 to stop when the displacement of the transmission nut 220 reaches the preset value, so that the purpose of accurately controlling the displacement of the transmission nut 220 is realized, and further the purpose of accurately adjusting the volume of the oil bag 130 is realized. Meanwhile, the phenomenon that the transmission nut 220 is jammed due to exceeding the stroke of the transmission screw 210 can be avoided.
One preferred embodiment of the displacement measuring device for measuring the displacement of the driving nut 220 is: the displacement measuring device includes an encoder 300, and the encoder 300 is used for measuring the number of rotations of the output shaft of the driving motor 240. The encoder shaft 310 of the encoder 300 is in transmission connection with the output shaft or coupling of the driving motor 240 through a transmission assembly. The displacement measuring device further comprises a calculator, wherein the calculator is connected with the encoder 300 and is used for calculating the displacement of the transmission nut 220 according to the rotation number of the output shaft of the driving motor 240 measured by the encoder 300 and a calculation rule. The calculation rule may be the number of rotations of the output shaft of the drive motor 240 multiplied by the lead of the drive nut 220. Wherein the transmission assembly may preferably be a gear transmission assembly, but of course may also be a belt transmission assembly or the like. The gear assembly includes a first gear 250 mounted on the output shaft of the coupling or drive motor 240 and a second gear 260 mounted on the encoder shaft 310, the first gear 250 and the second gear 260 being in meshing engagement.
The end of the motor mounting section 140 close to the guide section 110 is provided with an end cover 142, the end cover 142 is provided with a first through hole 1421, and an output shaft of the driving motor 240 penetrates through the first through hole 1421 to be in transmission connection with the transmission screw 210. One end of the first through hole 1421 near the guide cavity 111 is provided with a reaming section, a bearing 270 is installed in the reaming section, and an output shaft of the driving motor 240 is installed in an inner ring of the bearing 270. The end cap 142 is further provided with a second through hole 1422, and the encoder shaft 310 penetrates through the second through hole 1422 and the penetrated part is in transmission connection with an output shaft or a coupling of the driving motor 240 through a transmission assembly.
Referring to fig. 4 and 5, in some preferred embodiments, the driving nut 220 includes a nut portion 221 and a connecting sleeve portion 222, the connecting sleeve portion 222 is located on a side of the nut portion 221 close to the oil tank section 120, the nut portion 221 is fixedly connected to an adjacent end of the connecting sleeve portion 222, the nut portion 221 is screwed on the driving screw 210, the connecting sleeve portion 222 is movably sleeved on the driving screw 210, and an end of the connecting sleeve portion 222 away from the nut portion 221 is connected to the piston member 230 to drive the piston member 230 to reciprocate;
the connecting sleeve portion 222 is provided with a position-limiting section 2221, and the inner side surface of the guide cavity 111 matches with the circumferential side surface of the position-limiting section 2221 in shape to limit the rotation of the transmission nut 220.
In the present preferred embodiment, the nut portion 221 is screwed to the drive screw 210 to move in the guide direction by the drive screw 210. The nut portion 221 may preferably be a flange nut facilitating a fixed connection between the nut portion 221 and the drive sleeve portion. The nut portion 221 and the connecting sleeve portion 222 may be detachably and fixedly connected, such as but not limited to a bolt connection.
The connection sleeve portion 222 is provided with a position-limiting section 2221, and the inner side surface of the guide cavity 111 matches with the circumferential side surface of the position-limiting section 2221 in shape to limit the rotation of the transmission nut 220. Wherein, the whole week side of spacing section 2221 all with the spacing cooperation of the medial surface in direction chamber 111, improved the spacing area of contact between drive nut 220 and the direction chamber 111, increased the spacing intensity of direction chamber 111 to drive nut 220, and then prolonged the life of casing and drive nut 220.
In addition, the position-limiting section 2221 may be preferably disposed at an end of the driving bushing portion close to the nut portion 221, so as to increase the mounting surface on the driving bushing portion, and facilitate the mounting of the nut portion 221 on the connecting bushing portion 222. The end of the connecting sleeve part 222 away from the nut part 221 is provided with a first mounting flange 2222, and the connecting sleeve part 222 is fixedly connected with the piston member 230 through the first mounting flange 2222.
In certain preferred embodiments, the peripheral sides of stop section 2221 may be polygonal or elliptical.
In the present preferred embodiment, the peripheral side surface of the position-limiting section 2221 may be a polygon or an ellipse, wherein the polygon may further preferably be a regular polygon, such as but not limited to a rectangle, a regular triangle, etc. When the peripheral side surface of the limiting section 2221 is polygonal or elliptical, not only is the limiting strength of the guide cavity 111 to the transmission nut 220 improved, but also the production and the preparation are facilitated.
In certain preferred embodiments, the buoyancy adjusting device further comprises a travel switch 400, the travel switch 400 is disposed on the housing, and a contact of the travel switch 400 is located in one end of the piston cavity 121 close to the guide cavity 111;
the controller is connected to the travel switch 400 for controlling the driving motor 240 to be stopped when the piston member 230 is in contact with the contact of the travel switch 400.
In the preferred embodiment, the contact of the stroke switch 400 is located in the end of the piston chamber 121 close to the guide chamber 111, and when the piston member 230 contacts the stroke switch 400 during the movement toward the guide chamber 111, the controller controls the driving motor 240 to stop to limit the piston member 230 from further moving. Wherein, buoyancy adjustment device includes a plurality of travel switch 400, and the contact of a plurality of travel switch 400 sets up along circumference interval.
Referring to fig. 6, in some preferred embodiments, a second mounting flange 112 is disposed at an end of the guiding section 110 near the oil tank section 120, and the guiding section 110 is connected to the oil tank section 120 through the second mounting flange 112. An end surface of the second mounting flange 112 close to the oil tank section 120 is provided with mounting holes 1121 corresponding to each travel switch 400, and the mounting holes 1121 are used for mounting the travel switches 400. The housing is further provided with a wire hole, one end of the wire hole is communicated with the mounting hole 1121, and the other end of the wire hole penetrates through the side wall of the guide section 110 and extends into the mounting cavity 141 of the motor mounting section 140, so that a wire of the travel switch 400 can enter the mounting cavity 141. A wiring groove 1122 is formed in the end surface, close to the oil tank section 120, of the second mounting flange 112, and the bottom of the wiring groove 1122 is communicated with the wiring hole, so that a worker can conveniently perform wiring operation on a wire of the travel switch 400.
Referring to fig. 10, in some preferred embodiments, the piston member 230 includes a first end surface 233 facing the oil pocket 130 and a second end surface 234 disposed opposite to the first end surface 233, the piston member 230 is provided with an oil hole 231, and both ends of the oil hole 231 are disposed through the first end surface 233 and the second end surface 234, respectively; the oil filling holes 231 are all sealed with detachable sealing plugs 232.
In the preferred embodiment, oil holes 231 in the piston member 230 may be used to inject oil into the piston chamber 121. A sealing plug 232 is arranged in the oil filling hole 231, and the sealing plug 232 can be detachably plugged in the oil filling hole 231, so that the oil filling hole 231 can be sealed and plugged at the end of oil filling.
In other preferred embodiments, the piston member 230 may be provided with a plurality of oil holes 231. Wherein one part of the plurality of oil injection holes 231 may be used to inject oil into the piston chamber 121 and the other part may be used to discharge air from the piston chamber 121 and the oil pocket 130, thereby increasing the efficiency of oil injection.
In some preferred embodiments, the oil filling hole 231 is axially provided with a screw hole section 2311 and a sealing section 2312, and the sealing section 2312 is located on the side of the screw hole section 2311 away from the oil bag 130;
the sealing plug 232 includes a screw portion 2321 and a sealing portion 2322, a sealing ring is disposed in the sealing portion 2322, wherein the screw portion 2321 is screwed into the screw hole section 2311, the sealing portion 2322 is located in the sealing section 2312, and the sealing ring is in sealing fit with an inner side surface of the sealing section 2312.
In the preferred embodiment, the sealing plug 232 includes a screw portion 2321, and the screw portion 2321 is screwed into the screw hole 2311 in the oil filling hole 231. The seal portion 2322 is provided with a seal ring groove 2323, and a seal ring is mounted in the seal ring groove 2323. When the screw portion 2321 is screwed into the screw hole section 2311 in the oil filling hole 231, the sealing portion 2322 is located in the sealing section 2312 and the sealing ring is in sealing engagement with the inner side surface of the sealing section 2312, so as to increase the sealing performance between the sealing plug 232 and the oil filling hole 231.
In some preferred embodiments, in the oil hole 231, an end of the sealing section 2312 near the screw hole section 2311 is provided with a tapered first stopper surface 2313, and a large diameter end of the first stopper surface 2313 is provided toward the sealing section 2312. In the sealing plug 232, a tapered second limiting surface 2324 is disposed at one end of the sealing portion 2322 close to the screw portion 2321, and a large-diameter end of the second limiting surface 2324 is disposed toward the sealing portion 2322. The first limiting surface 2313 is in limiting fit with the second limiting surface 2324 to limit the movement of the density plug.
In some preferred embodiments, the motor mounting section 140, the guiding section 110 and the cargo tank section 120 are all generally cylindrical in structure, which reduces the resistance of the buoyancy adjusting device under water.
The embodiment of the application also provides an underwater vehicle which comprises a buoyancy adjusting device. The buoyancy adjusting device is used for adjusting the buoyancy of the underwater vehicle.
Referring to fig. 11 and 12, an embodiment of the present application further provides a method for oiling a buoyancy adjusting device, including:
s10: separating the guide section 110 and the cargo section 120 such that the second end face 234 of the piston member 230 is exposed;
s20: the sealing plug 232 in the oil injection hole 231 on the piston member 230 is taken down, and oil is injected into the piston cavity 121 through the oil injection hole 231;
s30: after the oil injection is finished, the sealing plug 232 plugs the oil injection hole 231, and then the guide section 110 and the oil tank section 120 are fixedly connected.
In this embodiment, the oiling process is performed when the guiding section 110 and the cargo tank section 120 are in an unconnected state, and the oiling process is specifically as follows: the guiding section 110 and the cargo tank section 120 are separated to expose the second end face 234 of the piston member 230, so that the sealing plug 232 can be conveniently taken out of the oil filling hole 231; after the sealing plug 232 is taken out of the oil filling hole 231, oil is filled into the oil filling hole 231, enters the piston cavity 121 and flows into the oil bag 130; after the oil injection is finished, the staff member plugs the plugging head in the oil injection hole 231 again, and then fixedly connects the guiding section 110 and the oil tank section 120.
Wherein the piston member 230 is driven by the driving motor 240 to move away from the guide cavity 111, so that the guide section 110 and the cargo tank section 120 are separated, and the second end face 234 of the piston member 230 is exposed. The piston member 230 is driven by the driving motor 240 to move toward the guide chamber 111, so that the oil tank section 120 is in contact with the guide section 110 to be fixedly connected.
The oil injection method provided by the embodiment not only improves the operation convenience of oil injection into the buoyancy adjusting device, but also can improve the oil injection amount in the buoyancy adjusting device.
It will be understood that any orientation or positional relationship indicated above with respect to the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc., is based on the orientation or positional relationship shown in the drawings and is for convenience in describing and simplifying the invention, and does not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be considered limiting of the invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (12)
1. A buoyancy adjusting device, comprising:
the device comprises a shell, a first guide part and a second guide part, wherein the shell comprises a guide section, and a guide cavity is arranged in the guide section;
the transmission assembly is arranged in the guide cavity, the transmission direction of the transmission assembly is the guide direction of the guide cavity, the transmission assembly comprises a transmission screw and a transmission nut screwed on the transmission screw, and the transmission nut is in sliding fit with the inner side face of the guide cavity in a rotation stopping manner.
2. The buoyancy regulating device according to claim 1 wherein the inner side of the guide chamber and the peripheral side of the drive nut are at least partially matched in shape to limit rotation of the drive nut.
3. The buoyancy regulating device according to claim 1, further comprising:
the output shaft of the driving motor is in transmission connection with the transmission screw;
the displacement measuring device is used for measuring the displacement of the transmission nut;
and the controller is respectively connected with the driving motor and the angular displacement sensor and is used for controlling the driving motor to stop when the displacement of the transmission nut reaches a preset value.
4. The buoyancy adjusting device according to claim 1, wherein the housing further comprises a tank section, the tank section is located at one side of the guide section, the guide section is fixedly connected with the adjacent end of the tank section, a piston cavity is arranged in the tank section, and the piston cavity is communicated with the guide cavity;
the buoyancy adjusting device further includes:
the piston piece is arranged in the piston cavity in a sliding mode, and the transmission nut is connected with the piston piece to drive the piston piece to move in the piston cavity in a reciprocating mode;
the oil sac is positioned on one side, far away from the guide section, of the oil cabin section and communicated with the piston cavity.
5. The buoyancy regulating device according to claim 4, wherein the tank section is detachably fixedly connected to the guide section.
6. The buoyancy adjusting device according to claim 4, wherein the transmission nut comprises a nut portion and a connecting sleeve portion, the connecting sleeve portion is located on one side of the nut portion close to the oil tank section, the nut portion is fixedly connected with an adjacent end of the connecting sleeve portion, the nut portion is screwed on the transmission screw rod, the connecting sleeve portion is movably sleeved on the transmission screw rod, and one end of the connecting sleeve portion, which is far away from the nut portion, is connected with the piston member to drive the piston member to reciprocate;
the connecting sleeve part is provided with a limiting section, and the inner side surface of the guide cavity is matched with the peripheral side surface of the limiting section in shape so as to limit the rotation of the transmission nut.
7. The buoyancy regulating device according to claim 6, wherein the peripheral side surface of the stopper section is polygonal or elliptical in shape.
8. The buoyancy regulating device according to claim 4, further comprising a travel switch disposed on the housing with a contact of the travel switch located in an end of the piston chamber adjacent to the guide chamber;
the controller is connected with the travel switch and used for controlling the driving motor to stop when the piston piece is contacted with the contact of the travel switch.
9. The buoyancy adjusting device according to claim 4, wherein the piston member includes a first end surface facing the oil pocket and a second end surface disposed opposite to the first end surface, and the piston member is provided with oil holes, both ends of which are disposed through the first end surface and the second end surface, respectively;
and the oil filling hole is internally provided with a detachable sealing plug in a plugging way.
10. The buoyancy regulating device according to claim 9, wherein the oil injection hole is provided with a screw hole section and a sealing section in an axial direction, and the sealing section is positioned on a side of the screw hole section away from the oil bag;
the sealing plug comprises a screw portion and a sealing portion, wherein a sealing ring is arranged in the sealing portion, the screw portion is in threaded connection with the screw hole section, the sealing portion is located in the sealing section, and the sealing ring is in sealing fit with the inner side face of the sealing section.
11. An underwater vehicle comprising a buoyancy adjusting device as claimed in any one of claims 1 to 10.
12. A method of oiling a buoyancy adjusting device as defined in claim 9 or 10 comprising:
separating the guide section from the cargo tank section to expose the second end surface of the piston member;
a sealing plug in an oil injection hole on the piston piece is taken down, and oil is injected into the piston cavity through the oil injection hole;
after the oil injection is finished, the sealing plug plugs the oil injection hole, and then the guide section is fixedly connected with the oil cabin section.
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