CN114420475B - Underwater device and underwater travel switch - Google Patents

Underwater device and underwater travel switch Download PDF

Info

Publication number
CN114420475B
CN114420475B CN202210056846.1A CN202210056846A CN114420475B CN 114420475 B CN114420475 B CN 114420475B CN 202210056846 A CN202210056846 A CN 202210056846A CN 114420475 B CN114420475 B CN 114420475B
Authority
CN
China
Prior art keywords
travel switch
sealing
underwater
switch
proximity switch
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
Application number
CN202210056846.1A
Other languages
Chinese (zh)
Other versions
CN114420475A (en
Inventor
刘富祥
周传程
张建柏
赵勇刚
刘红霞
刘陆昱
张玉钦
付暄翔
王长城
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China International Marine Containers Group Co Ltd
Yantai CIMC Raffles Offshore Co Ltd
CIMC Offshore Engineering Institute Co Ltd
Longkou CIMC Raffles Offshore Co Ltd
Haiyang CIMC Raffles Offshore Co Ltd
Yantai CIMC Blue Ocean Technology Co Ltd
Original Assignee
China International Marine Containers Group Co Ltd
Yantai CIMC Raffles Offshore Co Ltd
CIMC Offshore Engineering Institute Co Ltd
Longkou CIMC Raffles Offshore Co Ltd
Haiyang CIMC Raffles Offshore Co Ltd
Yantai CIMC Blue Ocean Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by China International Marine Containers Group Co Ltd, Yantai CIMC Raffles Offshore Co Ltd, CIMC Offshore Engineering Institute Co Ltd, Longkou CIMC Raffles Offshore Co Ltd, Haiyang CIMC Raffles Offshore Co Ltd, Yantai CIMC Blue Ocean Technology Co Ltd filed Critical China International Marine Containers Group Co Ltd
Priority to CN202210056846.1A priority Critical patent/CN114420475B/en
Publication of CN114420475A publication Critical patent/CN114420475A/en
Application granted granted Critical
Publication of CN114420475B publication Critical patent/CN114420475B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/16—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. for a door switch, a limit switch, a floor-levelling switch of a lift
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers
    • H01H9/04—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/945—Proximity switches
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/945—Proximity switches
    • H03K2017/9455—Proximity switches constructional details

Landscapes

  • Switch Cases, Indication, And Locking (AREA)

Abstract

The invention provides an underwater device and an underwater travel switch. The underwater travel switch comprises a shell, two sealing pieces, a proximity switch and a driving shaft. The shell is hollow and provided with an accommodating space; the two sealing elements are positioned in the accommodating space and are arranged at the two axial ends of the shell to form a sealing space; each seal has flexibility; the proximity switch is arranged on the shell, extends along the radial direction of the shell and is communicated with the sealing space; the drive shaft extends along the axial direction of the shell and is partially positioned in the accommodating space, the two ends of the drive shaft are respectively a far end far away from the proximity switch and a near end close to the proximity switch, the near end is in sealing connection and fixation with one sealing element, the far end penetrates through the other sealing element and is in sealing connection and fixation with the sealing element, and the far end extends out of the shell so as to be used for being contacted with the outside to enable the drive shaft to move along the direction from the far end to the near end to be close to the proximity switch, and then the proximity switch is triggered.

Description

Underwater device and underwater travel switch
Technical Field
The invention relates to the technical field of underwater devices, in particular to an underwater device and an underwater travel switch.
Background
For marine deepwater equipment and devices, a travel switch is often required to feed back whether the motion of the equipment and the device is in place, but common proximity switches, magnetic switches, mechanical travel switches and the like are difficult to meet the waterproof requirement, especially when the water depth exceeds 20 meters. The usual proximity switch cannot work normally due to the strong conductivity of the seawater, and the triggering distance of the proximity switch, the magnetic attraction switch and the like is limited, so that the precision of the underwater device is sometimes difficult to meet; the common mechanical travel switch adopts a dynamic seal mode, and the moving part and the seal structure have relative movement, so that abrasion can exist for a long time, leakage is caused, and the normal function of the switch is further affected. In addition, as the adopted electric switch is mechanically contacted type micro-motion, the abrasion can be caused for a long time, and the performance is affected.
Disclosure of Invention
The invention aims to provide an underwater travel switch with better performance and longer service life and an underwater device adopting the travel switch, so as to solve the problems in the prior art.
In order to solve the technical problems, the present invention provides an underwater travel switch, comprising:
a housing having a hollow interior and a receiving space;
the two sealing parts are positioned in the accommodating space and are respectively arranged at the two axial ends of the shell to form a sealing space; each of the seals has flexibility;
the proximity switch is arranged on the shell, extends along the radial direction of the shell and is communicated with the sealing space;
the drive shaft extends along the axial direction of the shell and is partially positioned in the accommodating space, two ends of the drive shaft are respectively far away from the far end of the proximity switch and near the near end of the proximity switch, the near end is in sealing connection and fixation with one sealing element, the far end penetrates through the other sealing element and is in sealing connection and fixation with the sealing element, and the far end extends out of the shell so as to be in contact with the outside, so that the drive shaft moves along the direction from the far end to the near end and is near the proximity switch, and then the proximity switch is triggered.
In one embodiment, the sealing member is a rubber membrane, and the sealing member is cylindrical.
In one embodiment, the seal increases in diameter in a distal to proximal direction.
In one embodiment, the shell comprises a cylinder body and end covers distributed at two axial ends of the cylinder body;
the sealing elements are in one-to-one correspondence with the end covers, are arranged between the cylinder body and the corresponding end cover, and are in sealing connection through fasteners;
both end caps are open to expose the seal to water.
In one embodiment, a shoulder is arranged between the distal end of the drive shaft and the proximity switch along the axial direction of the shell;
in the radial direction of the housing, a space is provided between the proximity switch and the drive shaft.
In one embodiment, the distal end of the drive shaft is provided with a roller for contacting the outside to push the drive shaft to move;
the roller is positioned outside the shell and rotates around the axis direction perpendicular to the driving shaft.
In one embodiment, a resilient member is disposed around the drive shaft, the resilient member being positioned within the sealed space and adjacent the distal end to provide a force for returning the drive shaft in a direction from the proximal end to the distal end.
In one embodiment, a limiting groove with an opening facing the inner wall of the shell is formed in the periphery of the driving shaft, and the limiting groove extends along the axial direction;
the underwater travel switch further comprises a limiting piece which is fixedly connected with the shell; the limiting piece is inserted into the limiting groove to limit the driving shaft to rotate along the circumferential direction, and the limiting piece and the proximity switch are arranged at intervals along the circumferential direction of the shell.
In one embodiment, the outer circumference of the drive shaft is further provided with a pressure equalization groove, such that the outer circumference of the drive shaft has a space between the pressure equalization groove and the inner wall of the housing.
In one embodiment, an opening is formed in the top of the shell, a switch mounting seat for mounting the proximity switch is arranged at the opening, sealing is achieved between the switch mounting seat and the shell by adopting a sealing ring, sealing is achieved between the switch mounting seat and the proximity switch by adopting sealant, and the sealant can resist high pressure.
In one embodiment, the shell is made of plastic and can resist seawater corrosion;
the driving shaft is made of stainless steel.
The invention also provides an underwater device, which comprises a device body, the underwater travel switch and a control system, wherein the underwater travel switch is arranged on the device body and is electrically connected with the control system;
when the proximity switch is triggered to be started, the control system receives the signal and judges the state of the device body according to the signal.
In one embodiment, the device body includes:
an upper frame;
the lower frame is arranged below the upper frame;
the trigger plate is arranged at the bottom of the upper frame and protrudes downwards;
the underwater travel switch is arranged at the top of the lower frame and corresponds to the trigger plate;
the lower frame and the upper frame can be close to or far away from each other, so that the trigger plate contacts the underwater travel switch to trigger or release the proximity switch.
In one embodiment, the bottom of the trigger plate has an inclined surface inclined upward toward the side of the underwater travel switch in a distal-to-proximal direction of the drive shaft.
According to the technical scheme, the invention has the advantages and positive effects that:
according to the underwater travel switch, the driving shaft is fixedly connected with the two sealing elements, the sealing elements are flexible, and the driving shaft moves together with the sealing elements when moving, namely, the driving shaft and the sealing elements are relatively static to form static sealing, so that effective sealing is ensured, abrasion between the driving shaft and the sealing elements is reduced, and the service life of the underwater travel switch is prolonged.
The proximity switch of the underwater travel switch is non-contact, so that poor contact caused by abrasion is avoided. And the driving shaft is vertical to the proximity switch, so that the triggering distance and the triggering effective stroke are ensured. Namely, the underwater travel switch has better performance.
Drawings
FIG. 1 is a schematic diagram of a water down travel switch according to one embodiment of the present invention.
Fig. 2 is a schematic view of another direction of fig. 1 in the present invention.
Fig. 3 is a cross-sectional view of one direction of fig. 1 in the present invention.
Fig. 4 is a cross-sectional view of the invention in another direction from fig. 1.
Fig. 5 is a schematic view of the structure of the driving shaft, the sealing member and the limiting member in the present invention.
Fig. 6 is a schematic view of the structure of the underwater device of the present invention.
FIG. 7 is a schematic view of the structure of the underwater device for clamping the cage of the cultivation box.
The reference numerals are explained as follows:
100. an underwater device;
1. an underwater travel switch; 11. a housing; 111. a base; 112. a cylinder; 1121. a limiting ring; 113. a left end cover; 114. a right end cover; 118. opening holes; 12. a seal; 13. a proximity switch; 14. a switch mounting base; 141. a mounting cylinder; 142. a top cover; 143. a rubber sheath; 146. a seal ring; 147. sealing glue; 15. a drive shaft; 151. a roller; 152. a shaft shoulder; 153. a limit groove; 154. a pressure balancing tank; 16. a limiting piece; 17. a rebound member; 18. a fixing seat;
21. an upper frame; 22. a lower frame; 23. a clamp arm; 231. an upper clamp arm; 232. a lower clamp arm; 233. a claw; 24. a trigger plate; 25. an opening and closing device; 251. a plate hook; 252. swing rod; 26. a junction box;
800. and (5) a cultivation box cage.
Detailed Description
Exemplary embodiments that embody features and advantages of the present invention will be described in detail in the following description. It will be understood that the invention is capable of various modifications in various embodiments, all without departing from the scope of the invention, and that the description and illustrations herein are intended to be by way of illustration only and not to be construed as limiting the invention.
For the purpose of further illustrating the principles and structure of the present invention, preferred embodiments of the invention will now be described in detail with reference to the accompanying drawings.
The invention provides an underwater travel switch which is suitable for underwater use, in particular for deep water with the water depth of more than 20 meters.
Referring to fig. 1 and 2, the underwater travel switch 1 includes a housing 11, a seal 12, a proximity switch 13, and a drive shaft 15. Wherein, the proximity switch 13 is non-contact, so that poor contact caused by abrasion is avoided; the drive shaft 15 extends along the axial direction of the housing 11, and the proximity switch 13 extends along the radial direction of the housing 11, i.e. the drive shaft 15 is perpendicular to the proximity switch 13, so that the triggering interval and the triggering effective stroke are ensured. And the drive shaft 15 is connected to the seal 12 such that there is a relatively static, i.e. static seal, between the seal 12 and the drive shaft 15. The static seal mode does not influence the movement of the driving shaft 15, ensures effective sealing, avoids abrasion between the driving shaft 15 and the sealing piece 12, and prolongs the service life of the underwater travel switch 1.
Therefore, the underwater travel switch 1 has better performance and longer service life. The underwater travel switch 1 is specifically described below.
The housing 11 is hollow and has a receiving space, and specifically, the housing 11 includes a base 111, a cylinder 112 disposed on the base 111, and end caps disposed at opposite ends of the cylinder 112.
The bottom of the base 111 is flat plate-shaped for easy installation. The base 111 is provided with bolt holes for connecting the underwater travel switch 1 with other structures.
The cylinder 112 is cylindrical and hollow. The top of the cylinder 112 is provided with an opening which communicates with the interior. Wherein the opening is near the right end. For ease of description, the end proximal to the opening is defined as the proximal end and the end distal to the opening is defined as the distal end.
The proximal opening of the barrel 112 is flared with a diverging diameter outwardly.
The two end covers are a left end cover 113 and a right end cover 114 respectively, the left end cover 113 covers the far end of the cylinder 112, and the right end cover 114 covers the near end of the cylinder 112.
The left end cap 113 has a cylindrical shape, and its diameter gradually increases from the distal end to the proximal end. The left end cap 113 interfaces with the distal end of the barrel 112 and is connected by flat washers, bolts, and spring washers.
The right end cap 114 is cylindrical in shape with a diameter that gradually decreases from the distal end to the proximal end. The right end cap 114 interfaces with the proximal end of the barrel 112 and is connected by flat washers, bolts, and spring washers.
The middle parts of the left end cover 113 and the right end cover 114 are provided with openings 118, namely, the two end covers are provided with openings 118, so that the sealing element 12 is exposed to water.
The shell 11 is made of plastic, can resist seawater corrosion, is light in weight and good in strength, ensures small friction between the driving shaft 15 and the shell 11, and can prevent metal from possibly affecting the proximity switch 13. The material of the housing 11 is exemplified by polytetrafluoroethylene, nylon, POM, fiber resin, and the like.
Referring to fig. 3 and 4, the two sealing members 12 are disposed in the accommodating space and are separately disposed at two axial ends of the housing 11, and the two sealing members 12 and the cylinder 112 together enclose a sealed space. The sealing elements 12 are in one-to-one correspondence with the end covers, namely, the sealing elements 12 are arranged at the left end cover 113 and the right end cover 114.
The seal 12 is disposed between the barrel 112 and the corresponding end cap and is sealingly connected by fasteners. I.e., one seal 12 is located between the left end cap 113 and the distal end of the barrel 112 and the other seal 12 is located between the right end cap 114 and the proximal end of the barrel 112.
In this embodiment, the distal end of the cylinder 112 is provided with a plurality of bolt holes at intervals in the circumferential direction, the left end cover 113 is provided with a plurality of mounting holes at intervals in the circumferential direction, and the sealing member 12 is provided with a plurality of connecting holes at intervals in the circumferential direction, and the bolt holes, the mounting holes and the connecting holes are in one-to-one correspondence. The fastener is the bolt, and the bolt inserts bolt hole, connecting hole and mounting hole simultaneously. A flat washer and a spring washer are also arranged between the bolt and the left end cover 113, and the flat washer and the spring washer are positioned outside the accommodating space.
The proximal seal 12, right cap 114, and proximal barrel 112 may be connected by reference to the distal seal 12, left cap 113, and distal barrel 112. And are not described in detail herein.
Each seal 12 has flexibility. In this example, the seal 12 is a rubber diaphragm.
Specifically, both the sealing members 12 are cylindrical, and the diameters of both the sealing members 12 gradually increase in the distal-to-proximal direction. This configuration provides the seal member 12 with a distally directed projection, with an axial spacing between the distally located projection of the seal member 12 and the right cap 114.
The seal 12 is located between the barrel 112 and the corresponding end cap so that the end cap protects the seal 12 from mechanical damage.
The proximity switch 13 is mounted at an opening of the housing 11. The proximity switch 13 extends in the radial direction of the housing 11 and communicates with the sealed space. The proximity switch 13 has a cable on top, the other end of which is used to connect the electrical system.
In this embodiment, the proximity switch 13 is a non-contact switch, and is triggered when an object is detected to be close, so that poor contact caused by abrasion is avoided.
The proximity switch 13 is mounted at the opening by a switch mount 14. Specifically, the switch mount 14 includes a cylindrical mounting cylinder 141 and a top cover 142 covering the top of the mounting cylinder 141. The axis of the mounting cylinder 141 extends in the radial direction of the housing 11. And the inner diameter of the mounting cylinder 141 is larger than the outer diameter of the proximity switch 13.
The bottom of the switch mount 14 is fitted with the outer Zhou Shi of the top of the cylinder 112, and the switch mount 14 is connected with the side wall on the opening peripheral side by a fastener in a sealing manner. In this embodiment, the switch mounting base 14 is provided with a plurality of mounting holes along its own circumferential direction at intervals, a plurality of fixing holes are provided on the side wall of the opening circumferential side, the mounting holes are arranged in one-to-one correspondence with the fixing holes, and bolts are inserted into the mounting holes and the fixing holes at the same time. And a flat washer and a spring washer are also provided between the bolt and the switch mount 14.
The switch mounting seat 14 and the shell 11 are sealed by a sealing ring 146. Specifically, a groove with an opening facing the bottom is formed in the bottom of the mounting cylinder 141, the groove is annular, and the sealing ring 146 is clamped in the groove.
The connection between the cap 142 and the mounting cylinder 141 is also achieved by fasteners. That is, the top cover 142 is provided with a bolt hole, the top of the mounting cylinder 141 is also provided with a bolt hole, and a fastener is inserted into both the bolt hole of the top cover 142 and the bolt hole of the mounting cylinder 141.
A wire through hole is formed in the middle of the top cover 142 for the cable of the proximity switch 13 to pass through. And the top cover 142 is further provided with a rubber sheath 143 for protecting the cable approaching the switch 13 from damage.
Sealing is achieved between the switch mounting seat 14 and the proximity switch 13 by using sealant 147, and the sealant 147 can resist high pressure.
Specifically, during installation, the proximity switch 13 is screwed in from the bottom of the installation cylinder 141, the length of the proximity switch 13 protruding out of the bottom of the installation cylinder 141 is adjusted, then the sealant 147 is poured from the top of the installation cylinder 141, and sealing connection between the proximity switch 13 and the installation cylinder 141 is completed after the sealant 147 is solidified; the top cover 142 is then mounted on top of the mounting cylinder 141.
The drive shaft 15 is axially movable to approach the proximity switch 13 to trigger the proximity switch 13. The driving shaft 15 is mutually perpendicular to the proximity switch 13, so that the triggering interval and the triggering effective stroke are ensured.
Referring to fig. 1, 2 and 5, the drive shaft 15 extends in the axial direction of the housing 11. The drive shaft 15 has distal and proximal ends, respectively, with the distal end being located at the distal end of the housing 11 and the proximal end being located at the proximal end of the housing 11.
The proximal end of the drive shaft 15 is located in the accommodation space of the housing 11, and the distal end extends out of the housing 11 and is located outside the housing 11.
The driving shaft 15 is made of stainless steel, can resist seawater corrosion, and can be applied to an underwater marine environment. Illustratively, the material of the driving shaft 15 is 316L.
The proximal end of the drive shaft 15 is connected to a seal 12 at the proximal end. Specifically, the proximal end of the drive shaft 15 passes through a proximally located seal 12, and the connection of the drive shaft 15 to the seal 12 is accomplished by a lock nut. And a nylon gasket is further clamped between the lock nut and the sealing piece 12, so that sealing connection is realized. The seal 12 is sealed with the drive shaft 15 by a nylon gasket to prevent water from entering the sealed space through the connection.
The proximal end of the drive shaft 15 is located proximal to the proximity switch 13 with a spacing axially between the proximal end of the drive shaft 15 and the right end cap 114.
The distal end of the drive shaft 15 extends out of the housing 11 through the distally located seal member 12 and the aperture 118 of the left end cap 113.
The connection between the distal end of the drive shaft 15 and the distally located seal member 12 may refer to the connection between the proximal end of the drive shaft 15 and the proximally located seal member 12 and will not be described in detail herein.
In this embodiment, the drive shaft 15 is coaxial with the housing 11.
The distal end of the drive shaft 15 is provided with a roller 151 for contact with the outside to push the drive shaft 15 to move.
The roller 151 is located outside the housing 11, and the roller 151 rotates around an axis direction perpendicular to the driving shaft 15. By the contact of the roller 151 with the external structure, the friction force and the abrasion are reduced by the rolling contact between the roller 151 and the external structure.
Specifically, the distal end of the driving shaft 15 is provided with a rotating shaft, and the roller 151 is sleeved on the rotating shaft and can rotate around the rotating shaft. The axis of rotation is perpendicular to the drive shaft 15 and the axis of rotation is perpendicular to the proximity switch 13. Illustratively, the proximity switch 13 extends vertically, the drive shaft 15 is longitudinal, and the axis of rotation is transverse.
Further, two clamping springs are sleeved on the periphery of the rotating shaft, and the two clamping springs are respectively arranged on two sides of the roller 151 so as to stop the rotating shaft from moving along the axial direction of the rotating shaft.
Axially, the drive shaft 15 has a shoulder 152 thereon, the shoulder 152 being located between the distal end of the drive shaft 15 and the proximity switch 13. As the drive shaft 15 moves axially from distal to proximal, the shoulder 152 gradually approaches the proximity switch 13 until the proximity switch 13 is activated.
The drive shaft 15 and the proximity switch 13 have a space therebetween in the radial direction of the housing 11. Specifically, there is a space between the maximum outer diameter of the drive shaft 15, i.e., the shoulder 152, and the proximity switch 13 in the radial direction of the housing 11. Thus, during the movement of the drive shaft 15, friction between the drive shaft 15 and the proximity switch 13 is avoided.
In this embodiment, a limiting ring 1121 protruding toward the axis is further disposed in the cylinder 112, and the limiting ring 1121 is disposed in the sealed space and at the distal end of the shoulder 152 to limit the shoulder 152 from moving further toward the distal end.
The outer periphery of the driving shaft 15 is provided with a limit groove 153 with an opening facing the inner wall of the housing 11, and the limit groove 153 extends along the axial direction. Specifically in this embodiment, the limit groove 153 extends from the proximal end of the shoulder 152 to the proximal end of the drive shaft 15.
The underwater travel switch 1 further comprises a limiting piece 16 fixedly connected with the shell 11, and the limiting piece 16 is inserted into the limiting groove 153, so that the driving shaft 15 is limited to rotate along the circumferential direction, the assembly of the driving shaft 15 is ensured, and the roller 151 is prevented from being inclined to be damaged by rotation.
And when the driving shaft 15 moves in the axial direction, the limiting groove 153 extends in the axial direction, so that the driving shaft 15 can move in the axial direction relative to the limiting piece 16.
A copper gasket is arranged between the limiting piece 16 and the shell 11 to realize sealing connection.
In this embodiment, the limiting groove 153 and the proximity switch 13 are disposed at intervals along the circumferential direction of the housing 11, that is, the limiting member 16 and the proximity switch 13 are disposed at intervals along the circumferential direction of the housing 11.
The outer circumference of the drive shaft 15 is further provided with a pressure balance groove 154 so that a space is provided between the outer circumference of the drive shaft 15 and the inner wall of the housing 11 in the radial direction of the housing 11. Specifically, the pressure balancing groove 154 extends along the axial direction, is formed on one side of the periphery of the driving shaft 15, and the pressure balancing groove 154 is located at the distal end of the shaft shoulder 152, so that the air pressure inconsistency when the driving shaft 15 moves due to the formation of a sealing area can be avoided, the air pressure consistency of each place when the driving shaft 15 moves is ensured, and the usability of the underwater travel switch 1 is further ensured.
In this embodiment, the pressure balance groove 154 extends to the shoulder 152 and then continues to extend radially along the shoulder 152 until reaching the periphery of the shoulder 152.
Further, a rebound member 17 is provided around the outer circumference of the drive shaft 15. The resilient member 17 is positioned within the sealed space and adjacent the distal end of the drive shaft 15 to provide motive force for moving the drive shaft 15 in a proximal-to-distal direction. Namely, after the proximity switch 13 is triggered, the driving shaft 15 is moved to the far end to reset, so that the phenomenon that the driving shaft 15 is deviated due to the fact that the two sealing elements 12 are pressed by water pressure is avoided, and the service life of the underwater travel switch 1 is guaranteed.
In this embodiment, the resilient member 17 is a spring.
Specifically, a fixed seat 18 is disposed at the distal end of the driving shaft 15, and two ends of the spring in the axial direction are respectively abutted against the fixed seat 18 and the limiting ring 1121. That is, the spring is compressed when the drive shaft 15 is moved from the distal end to the proximal end, and thus, the spring can provide power for the movement of the drive shaft 15 from the proximal end to the distal end. Wherein the fixing seat 18 is located in the sealed space.
The end cap of the underwater travel switch 1 is provided with an opening 118 so that water can pass through and act on the seal 12. The sealing element 12 can deform inwards under the action of external water pressure, but the strength of the sealing element 12 is higher and can reach 11MPa generally, because the two ends of the cylinder 112 are subjected to water pressure, and the driving shaft 15 is provided with the pressure balancing groove 154 and the rebound member 17, the water pressure can not cause false triggering of the underwater travel switch 1.
In use, the underwater travel switch 1 causes the drive shaft 15 to move from the distal end to the proximal end by an external force, causing the shoulder 152 to approach the proximity switch 13, and thereby triggering the proximity switch 13. After triggering, the external force is removed and the drive shaft 15 is moved distally from the proximal end by the resilient member 17.
In the underwater travel switch 1 in the embodiment, the driving shaft 15 is fixedly connected with the two sealing elements 12, and the sealing elements 12 have flexibility, so that the driving shaft 15 moves together with the sealing elements 12 when moving, namely, the driving shaft 15 and the sealing elements 12 are relatively static to form a static seal, thereby not only ensuring effective sealing, but also ensuring abrasion between the driving shaft 15 and the sealing elements 12, and prolonging the service life of the underwater travel switch 1.
The proximity switch 13 of the underwater travel switch 1 is non-contact, so that poor contact caused by abrasion is avoided. And the driving shaft 15 is perpendicular to the proximity switch 13, so that the triggering interval and the triggering effective stroke are ensured. That is, the underwater travel switch 1 is excellent in performance.
Referring to fig. 6 and 7, the present invention further provides an underwater device 100, which includes a device body, an underwater travel switch 1 and a control system. The underwater travel switch 1 is arranged on the device body, and the underwater travel switch 1 is electrically connected with the control system.
When the proximity switch 13 is triggered to be turned on, the control system receives the signal and judges the state of the device body according to the signal.
In this embodiment, the device body includes an upper frame 21, a lower frame 22, two clamping arms 23, a trigger plate 24, and an opening/closing device 25. The device body can clamp the object by folding or unfolding the two clamping arms 23, so that the object is lowered to or lifted from the water to the water surface. Illustratively, the device body is capable of gripping the habitat 800 to lower the habitat 800 in the sea or gripping the habitat 800 located in the sea to raise to the surface.
Specifically, the upper frame 21 and the lower frame 22 are disposed in parallel at a spacing. Both ends of the upper frame 21 and the lower frame 22 are respectively connected by a clip arm 23, and the upper frame 21 and the lower frame 22 can be moved toward or away from each other.
The top of the lower frame 22 is provided with a base, and the underwater travel switch 1 is connected with the base through bolts and nuts.
Each of the clip arms 23 includes an upper clip arm 231 and a lower clip arm 232 that are hingedly connected to each other. The bottom of the upper clamp arm 231 is hinged to the top of the lower clamp arm 232, the top of the upper clamp arm 231 is hinged to the upper frame 21, and the bottom of the lower clamp arm 232 is hinged to the lower frame 22.
The bottom of the lower clamp arm 232 is provided with a claw 233. The jaws 233 of the two clamping arms 23 can clamp objects when approaching each other and release objects when separating from each other.
The opening and closing device 25 and the underwater travel switch 1 are arranged at intervals along the length direction of the upper frame 21. Specifically, the shutter 25 includes a plate hook 251, a catch plate (not shown), and a swing lever 252. Wherein the plate hook 251 is provided at the bottom of the upper frame 21 and is hinge-coupled with the upper frame 21.
Specifically, the bottom of the plate hook 251 has a circular arc shape.
The catch plate is fixed to the top of the lower frame 22 and is disposed corresponding to the plate hook 251. Wherein, cardboard and travel switch 1 are arranged along the length direction interval of lower frame 22 under water. In this embodiment, the clamping plate is disposed at the distal end of the underwater travel switch 1.
The catch plate is connected to the lower frame 22 by a fixed seat. Specifically, the fixing base is fixed on the top of the lower frame.
The swing rod 252 is arranged corresponding to the clamping plate. The swing rod 252 is connected with the fixed seat through a pin shaft, so that rotatable connection is realized.
In a natural state, the swing rod 252 is provided with a clamping groove facing the clamping plate.
When the plate hook 251 descends to the clamping plate and the swing rod 252, the plate hook 251 pushes the swing rod 252 to rotate and is clamped between the clamping plate and the swing rod 252, so that clamping is realized, and locking or separating of the opening and closing device 25 is further realized.
The trigger plate 24 is provided at the bottom of the upper frame 21 and protrudes downward. The trigger plate 24 is provided corresponding to the underwater travel switch 1, and the proximity switch 13 can be triggered by the trigger plate 24 contacting the underwater travel switch 1.
The lower frame 22 and the upper frame 21 can be mutually close to or far away from each other, and the trigger plate 24 is driven to be close to or far away from the underwater travel switch 1, so that the trigger plate 24 contacts the underwater travel switch 1 to trigger or release the proximity switch 13.
Further, in the distal-to-proximal direction of the drive shaft 15, the bottom of the trigger plate 24 has an inclined surface inclined upward toward the side of the underwater travel switch 1. The inclined surface is used to contact the roller 151 at the distal end of the underwater travel switch 1, so that the roller 151 rolls along the inclined surface. When the lower frame 22 and the upper frame 21 approach, the roller 151 rolls upward along the bottom of the inclined surface, thereby moving the driving shaft 15 from the distal end to the proximal end. The inclined surface is driven in such a way that the proximity switch 13 can be effectively triggered even if there is a displacement deviation in the driving.
The top of the lower frame 22 is also provided with a junction box 26. The cable of the proximity switch 13 of the underwater travel switch 1 is electrically connected with the junction box 26.
In this embodiment, the junction box 26 is disposed at the proximal end of the underwater travel switch 1 and is disposed at a distance from the proximal end.
The control system is electrically connected with the proximity switch 13, so that when the proximity switch 13 is triggered to be turned on, the control system receives the signal and judges the state of the device body according to the signal.
With continued reference to fig. 7, the operation principle of the underwater device 100 will be described:
the underwater device 100 is placed on the cultivation cage 800 by using the crane, the underwater device 100 is continuously lowered, the upper frame 21 and the lower frame 22 gradually approach each other until the trigger plate 24 contacts the roller 151 of the underwater travel switch 1, and when the underwater device is continuously approaching, the trigger plate 24 moves the driving shaft 15 from the distal end to the proximal end, the proximity switch 13 is triggered, and a signal is fed back to the control system. After receiving the signal, the operator can know whether the device body is put down in place, so as to ensure the correct locking or separation of the opening and closing device 25, further realize the releasing and clamping of the device body, and realize the lower part or lifting of the cultivation box cage 800.
In other embodiments, fish farming facilities such as farming boats and net cages require fish-catching during fish harvesting, and fish is collected and collected for convenient fishing. The device body can also be a fish-driving device, and specifically comprises a travelling mechanism and a fish-driving plate, wherein the travelling mechanism moves from one end of the net cage to the other end, and the fish-driving plate moves along with the travelling mechanism to drive fish from one end to the other end. The underwater travel switch in the embodiment is used for indicating the fish driving device to stop running, so that the fish driving device is prevented from colliding with an underwater structure due to misoperation.
According to the technical scheme, the invention has the advantages and positive effects that:
according to the underwater travel switch, the driving shaft is fixedly connected with the two sealing elements, the sealing elements are flexible, and then the driving shaft moves together with the sealing elements when moving, namely, the driving shaft and the sealing elements are relatively static, so that static sealing is formed, effective sealing is ensured, abrasion between the driving shaft and the sealing elements is reduced, and the service life of the underwater travel switch is prolonged.
The proximity switch of the underwater travel switch is non-contact, so that poor contact caused by abrasion is avoided. And the driving shaft is vertical to the proximity switch, so that the triggering distance and the triggering effective stroke are ensured. Namely, the underwater travel switch has better performance.
While the invention has been described with reference to several exemplary embodiments, it is to be understood that the terminology used is intended to be in the nature of words of description and of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims (14)

1. An underwater travel switch, comprising:
a housing having a hollow interior and a receiving space; the shell comprises a cylinder body and end covers respectively arranged at two axial ends of the cylinder body;
the two sealing parts are positioned in the accommodating space and are respectively arranged at the two axial ends of the shell to form a sealing space; each of the seals has flexibility; the sealing elements are in one-to-one correspondence with the end covers, and are arranged between the cylinder body and the corresponding end covers; openings are formed in the two end covers so that the sealing element is exposed to water;
the proximity switch is arranged on the shell, extends along the radial direction of the shell and is communicated with the sealing space;
the drive shaft extends along the axial direction of the shell and is partially positioned in the accommodating space, two ends of the drive shaft are respectively far away from the far end of the proximity switch and near the near end of the proximity switch, the near end is in sealing connection and fixation with one sealing element, the far end penetrates through the other sealing element and is in sealing connection and fixation with the sealing element, and the far end extends out of the shell so as to be in contact with the outside, so that the drive shaft moves along the direction from the far end to the near end and is near the proximity switch, and then the proximity switch is triggered.
2. The underwater travel switch of claim 1, wherein the seal is a rubber diaphragm and the seal is cylindrical.
3. The subsea travel switch of claim 2, in which the seal has a bore that increases progressively in a distal-to-proximal direction.
4. The subsea travel switch of claim 2, in which the seal is sealingly connected to the end cap by a fastener.
5. The subsea travel switch of claim 1, characterized in that there is a shoulder between the distal end of the drive shaft and the proximity switch in the axial direction of the housing;
in the radial direction of the housing, a space is provided between the proximity switch and the drive shaft.
6. The underwater travel switch of claim 1, wherein a distal end of the drive shaft is provided with a roller for contact with the outside to push the drive shaft to move;
the roller is positioned outside the shell and rotates around the axis direction perpendicular to the driving shaft.
7. The underwater travel switch of claim 1, wherein the drive shaft is peripherally sleeved with a resilient member located within the sealed space and proximate the distal end to provide motive force for the drive shaft to return in the direction of the proximal end toward the distal end.
8. The underwater travel switch of claim 1, wherein the outer circumference of the driving shaft is provided with a limit groove with an opening facing the inner wall of the shell, and the limit groove extends along the axial direction;
the underwater travel switch further comprises a limiting piece which is fixedly connected with the shell; the limiting piece is inserted into the limiting groove to limit the driving shaft to rotate along the circumferential direction, and the limiting piece and the proximity switch are arranged at intervals along the circumferential direction of the shell.
9. The underwater travel switch of claim 1, wherein the outer circumference of the driving shaft is further provided with a pressure balance groove such that the outer circumference of the driving shaft has a space between the pressure balance groove and the inner wall of the housing.
10. The underwater travel switch of claim 1, wherein an opening is formed in the top of the housing, a switch mounting seat for mounting the proximity switch is arranged at the opening, sealing is achieved between the switch mounting seat and the housing by a sealing ring, sealing is achieved between the switch mounting seat and the proximity switch by sealing glue, and the sealing glue can resist high pressure.
11. The underwater travel switch of claim 1, wherein the housing is plastic and is resistant to seawater corrosion;
the driving shaft is made of stainless steel.
12. An underwater device, comprising a device body, an underwater travel switch as claimed in any one of claims 1 to 11 arranged on the device body, and a control system, wherein the underwater travel switch is electrically connected with the control system;
when the proximity switch is triggered to be started, the control system receives a signal and judges the state of the device body according to the signal.
13. The underwater apparatus as in claim 12, wherein the apparatus body comprises:
an upper frame;
the lower frame is arranged below the upper frame;
the trigger plate is arranged at the bottom of the upper frame and protrudes downwards;
the underwater travel switch is arranged at the top of the lower frame and corresponds to the trigger plate;
the lower frame and the upper frame can be close to or far away from each other, so that the trigger plate contacts the underwater travel switch to trigger or release the proximity switch.
14. The subsea device of claim 13, characterized in that the bottom of the trigger plate has an inclined surface sloping upwards towards the side of the subsea travel switch in the distal-to-proximal direction of the drive shaft.
CN202210056846.1A 2022-01-18 2022-01-18 Underwater device and underwater travel switch Active CN114420475B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210056846.1A CN114420475B (en) 2022-01-18 2022-01-18 Underwater device and underwater travel switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210056846.1A CN114420475B (en) 2022-01-18 2022-01-18 Underwater device and underwater travel switch

Publications (2)

Publication Number Publication Date
CN114420475A CN114420475A (en) 2022-04-29
CN114420475B true CN114420475B (en) 2023-05-09

Family

ID=81273153

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210056846.1A Active CN114420475B (en) 2022-01-18 2022-01-18 Underwater device and underwater travel switch

Country Status (1)

Country Link
CN (1) CN114420475B (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109659184A (en) * 2018-12-24 2019-04-19 中国船舶重工集团公司第七0研究所 A kind of Underwater limit switch
CN111204429A (en) * 2020-03-09 2020-05-29 上海交大海科检测技术有限公司 Underwater robot limit control device
CN111555747A (en) * 2020-04-07 2020-08-18 武汉船用机械有限责任公司 Proximity switch
CN212392167U (en) * 2020-07-29 2021-01-22 贵州振华华联电子有限公司 Waterproof sealing micro-gap switch subassembly

Also Published As

Publication number Publication date
CN114420475A (en) 2022-04-29

Similar Documents

Publication Publication Date Title
KR102073163B1 (en) Installation structure for power distribution line of steel tower
US4250827A (en) Boat mooring device
CN114420475B (en) Underwater device and underwater travel switch
US2819476A (en) Floating marker
JP5473512B2 (en) Underwater separation device
CN107410281B (en) Split rotary ratproof ball
CN112572692A (en) Buoy load rejection releasing device
US6263823B1 (en) Connection system for connecting equipment to underwater cables
KR102248999B1 (en) Bird repelling apparatus of distribution line
CN107933861B (en) AUV retrieves and uses throwing rope ware
US11714337B2 (en) Retrofit trigger weight camera device and method
US20190276059A1 (en) Submersible switch point machine
CN112710422A (en) Tension detection device and pipeline detection robot
CN107472485A (en) A kind of acoustic releaser and its method for releasing
AU2020256308B2 (en) An underwater subsurface buoy observation and breaking device
KR200440991Y1 (en) Dangerous indication flag of vessel
CN110588921B (en) Floating ball device and underwater robot
US3287781A (en) Automatically released couplings
CN111559479B (en) Seabed-based monitoring system
CN111204429A (en) Underwater robot limit control device
CN110001894B (en) Underwater equipment release device and release method thereof
CN108270193B (en) Structural assembly for protecting buoy watertight cable
CN211869660U (en) Underwater robot limit control device
CN210893724U (en) Release device
CN220518519U (en) Driving arm of single-point mooring slip ring

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