CN212387563U - Gravity unhooking device for underwater airbag buoyancy salvage - Google Patents
Gravity unhooking device for underwater airbag buoyancy salvage Download PDFInfo
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- CN212387563U CN212387563U CN202021615503.7U CN202021615503U CN212387563U CN 212387563 U CN212387563 U CN 212387563U CN 202021615503 U CN202021615503 U CN 202021615503U CN 212387563 U CN212387563 U CN 212387563U
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Abstract
The gravity unhooking device for underwater airbag buoyancy salvage comprises lifting lug seats, pin holes are formed in two clamp plates, pin shafts capable of transversely penetrating through a hook containing groove are movably arranged in the pin holes, a cylinder body is connected to the left side of an installation plate, a piston is arranged in the cylinder body, the left end of each pin shaft penetrates through a through hole and extends into the cylinder body and is connected with the center of the right end face of the piston, an annular oil inlet groove is formed in the outer circumferential surface of the end part of the right end of the piston, and a compression spring is arranged between the end face of the left side of the piston and the end face. The invention has the beneficial effects that: the invention is especially suitable for underwater unhooking, can be used on land, can ensure the locking of the bolt state, prevent accidental unhooking action underwater, can design unhooking devices of different cylinder diameters and pin shaft size series, and has good product structure expansibility.
Description
Technical Field
The utility model relates to a gravity unhooking device that gasbag buoyancy was salvaged under water.
Background
At present, in a land hoisting device, a plurality of unhooking devices in various types are frequently needed, and a mechanical pull rod or a hydraulic mode is mostly adopted to realize quick unhooking. At present in the construction under water, especially steel construction installation or salvage engineering construction also has the condition of using the unhooking ware under water, because the condition is complicated under water, adopt the mode of mechanical pull rod formula to lead to unexpected action easily to the unhook leads to the jack-up accident, and the used fluid pressure type unhooking ware direct application of land under water, because hydraulic pressure differential effect and hydraulic oil and water-tight problem can lead to the unhooking ware trouble, can not guarantee its smooth action, it has the customer experience of using to show its job stabilization nature and reliability relatively poor. When a certain maritime work enterprise carries out underwater sea pipe installation in the north sea, a mechanical pull rope type detacher is adopted firstly, friction force is too large when a flexible shaft is pulled due to too long flexible shaft pull ropes, the flexible shaft pull ropes cannot pull the pull ropes at all due to corrosion caused by soaking in sea water, the detacher cannot be opened, and the adopted pull rope directly pulls the detacher, and the detacher is not adopted due to the fact that the rope is likely to be wound on other equipment along with drift of sea current and sea waves; the hydraulic cylinder type detacher used by the conventional automobile crane on the land is adopted later, when the automobile crane is submerged to a certain depth, the pressure difference between the oil pressure and the external water pressure of the detacher is reduced, the force of the external buckle of the lifting hook is reduced, the detacher is caused to be detached by the accidental action, the sea pipe is sunk to a non-installation place, and then the method of increasing the oil pressure is tried, so that the sealing problem is caused, oil pressure leakage and seawater pollution are generated, and the automobile crane cannot adapt to long-time hoisting operation.
Disclosure of Invention
For solving above technical not enough, the utility model provides a gravity unhook device that gasbag buoyancy was salvaged under water can guarantee the locking of bolt state, prevents unexpected unhook action under water, reliable and stable.
The utility model discloses a realize through following measure:
a gravity unhooking device for underwater airbag buoyancy salvage comprises a lifting lug seat, wherein clamping plates extend downwards and integrally from the left side and the right side of the lifting lug seat, a hook accommodating groove is reserved between the two clamping plates, pin holes are formed in the two clamping plates, a pin shaft capable of transversely penetrating through the hook accommodating groove is movably arranged in each pin hole, a mounting disc is connected to the left side of each clamping plate on the left side of the lifting lug seat, a cylindrical cylinder body which transversely extends leftwards and rightwards and is hollow inside is connected to the left side of the mounting disc, a piston capable of sliding leftwards and rightwards in the cylinder body is arranged in the cylinder body, a through hole is formed in the center of the mounting disc, the left end of the pin shaft penetrates through the through hole to extend into the cylinder body and is connected with the center of the right end face of the piston, the inner diameter of the cylinder body and the diameter of the right end face of the piston are both larger than the, the cylinder is characterized in that an annular oil inlet groove is formed in the outer circumferential surface of the right end of the piston, the oil inlet groove is communicated with the left end face of the mounting plate, a pin pulling oil inlet communicated with the oil inlet groove is formed in the side wall of the right end of the cylinder body, a compression spring is arranged between the left end face of the piston and the left end face of the cylinder body, and a drainage or bolt oil inlet is formed in the left end face of the cylinder body.
The left side of the left end face of the piston is connected with a section of limiting cylinder, the diameter of the limiting cylinder is smaller than that of the piston, and the compression spring is sleeved outside the limiting cylinder.
The center of the left end face of the pin shaft extends leftwards integrally to form a positioning pin, the diameter of the positioning pin is smaller than that of the pin shaft, the positioning pin penetrates into the piston from the center of the right end face of the piston and is fixed through a locking nut, and a sealing ring is sleeved on the positioning pin.
The right end face of the mounting plate is tightly attached to the surface of the clamping plate, a boss protruding leftwards is arranged in the center of the left end face of the mounting plate around the through hole, an opening at the right end of the cylinder body is sleeved on the boss, an outward flange is arranged at the right end of the cylinder body, and the outward flange, the mounting plate and the clamping plate of the cylinder body are fixed together through bolts.
Oil seals are arranged between the outer circumferential surface of the piston and the inner wall surface of the cylinder body and between the outer circumferential surface of the pin shaft and the inner wall surface of the through hole.
The upper part of the lifting lug seat is provided with a lifting hole.
The utility model has the advantages that: the utility model is particularly suitable for underwater unhooking, can be used on land, can ensure the locking of the bolt state, prevent the accidental unhooking action underwater, is limited by a mechanical structure, and has reliable pin pulling action; the pressure difference between the inner cavity and the outer cavity of the hydraulic cylinder is small, the sealing device is reliable, and the risk of pollution caused by oil leakage is reduced; through the long pipeline, the plug pin operation in a remote or deep water area can be realized; the unhooking device with different cylinder diameters and pin shaft size series can be designed, and the product structure expansibility is good.
Drawings
Fig. 1 is a schematic structural diagram of the state of the inserted pin shaft of the present invention.
Fig. 2 is the structure diagram of the pin shaft state extracted by the utility model.
Wherein: the device comprises a lifting lug seat 1, a mounting disc 2, a locking nut 3, a cylinder body 4, a compression spring 5, a piston 6, a bolt 7, a pin shaft 8, a sealing ring 9, an oil seal 10, a positioning pin 11, a drainage or bolt oil inlet 12, a clamping plate 13, a pin pulling oil inlet 14 and a limiting cylinder 15.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
the utility model discloses according to hanging some removing the operation requirement to buoyancy under water, designed the gravity unhook device that gasbag buoyancy salvaged under water, its principle is that the round pin axle 8 is pulled out to the pneumatic cylinder under water to help removing between floater and the lug and being connected, realize the unhook. The utility model discloses consider the hydraulic pressure of using under water and the inside hydraulic dual function of pneumatic cylinder, the structure is optimized, adopts the spring force to guarantee the withholding force of lifting hook, guarantees the initial positioning of lifting hook, and the round pin axle 8 is extracted to hydraulic pressure realization high thrust, realizes the automatic unhook purpose.
As shown in figures 1 and 2, the gravity unhooking device for underwater airbag buoyancy salvage comprises a lifting lug seat 1, clamping plates 13 are extended downwards and integrally from the left side and the right side of the lifting lug seat 1, a hook accommodating groove is reserved between the two clamping plates 13, pin holes are formed in the two clamping plates 13, pin shafts 8 capable of transversely penetrating through the hook accommodating groove are movably arranged in the pin holes, a mounting disc 2 is connected to the left side of the clamping plate 13 on the left side of the lifting lug seat 1, a hollow cylindrical cylinder body 4 which transversely extends leftwards and rightwards is connected to the left side of the mounting disc 2, a piston 6 capable of sliding leftwards and rightwards in the cylinder body 4 is arranged in the cylinder body 4, through holes are formed in the center of the mounting disc 2, the left end of each pin shaft 8 penetrates through the through hole to extend into the cylinder body 4 and is connected with the center of the right end face of the piston 6, the inner diameter of the cylinder body 4 and the diameter of the right end face of the piston 6 are The piston 6 is in sealing sliding contact, an annular oil inlet groove is formed in the outer circumferential surface of the right end portion of the piston 6, the oil inlet groove is communicated with the left end face of the mounting disc 2, a pin pulling oil inlet 14 communicated with the oil inlet groove is formed in the side wall of the right end of the cylinder body 4, a compression spring 5 is arranged between the left end face of the piston 6 and the inner left end face of the cylinder body 4, and a drainage or bolt oil inlet 12 is formed in the left end face of the cylinder body 4.
The left side of the left end face of the piston 6 is connected with a section of limiting cylinder 15, the diameter of the limiting cylinder 15 is smaller than that of the piston 6, and the compression spring 5 is sleeved outside the limiting cylinder 15. A positioning pin 11 integrally extends leftwards from the center of the left end face of the pin shaft 8, the diameter of the positioning pin 11 is smaller than that of the pin shaft 8, the positioning pin 11 penetrates into the piston 6 from the center of the right end face of the piston 6 and is fixed through a locking nut 3, and a sealing ring 9 is sleeved on the positioning pin 11. The right end face of the mounting disc 2 is tightly attached to the surface of the clamping plate 13, a boss protruding leftwards is arranged in the center of the left end face of the mounting disc 2 around the through hole, an opening at the right end of the cylinder body 4 is sleeved on the boss, an outward turning edge is arranged at the right end of the cylinder body 4, and the outward turning edge of the cylinder body 4, the mounting disc 2 and the clamping plate 13 are fixed together through the bolt 7. Oil seals 10 are provided between the outer circumferential surface of the piston 6 and the inner wall surface of the cylinder body 4 and between the outer circumferential surface of the pin shaft 8 and the inner wall surface of the through hole. The upper part of the lifting lug seat 1 is provided with a lifting hole, and the upper part is used for connecting and lifting. The mounting disc 2 is mounted on the lug seat 1, and is provided with an oil seal 10 for sealing a gap between the mounting disc and the pin shaft 8 and playing a role in guiding. The locking nut 3 locks the pin shaft 8 and the piston 6, the compression spring 5 is arranged at the bottom of the cylinder body 4, and the other end of the compression spring is pressed on the piston 6, so that the piston 6 is ensured to be in a bolt state. The piston 6 drives the pin shaft 8 to move in the cylinder body 4 and is always pushed to a plug pin state by the compression spring 5, the bottom of the piston is simultaneously provided with a limiting cylinder 15 structure, the excircle of the limiting cylinder 15 plays a role in guiding the compression spring 5, when the piston 6 pushes the pin to be pulled out due to the oil pressure of the pin pulling oil inlet 14, the limiting cylinder 15 moves to the bottom of the cylinder body 4, the continuous movement of the piston 6 is limited, and therefore the pin pulling position is accurately reached. The sealing ring 9 seals oil in the two cavities, if the internal and external pressure ratio is larger, 2 or 3 sealing rings 9 can be adopted for sealing, and the sealing rings are static sealing without movement. The oil seal 10 seals the piston 6 to move in the cylinder body 4, and is sealed in two directions.
When underwater, under the state that the pin pulling oil inlet 14 and the drainage or plug pin oil inlet 12 do not supply oil, the piston 6 is tightly pressed down to the right side by the compression spring 5, the pin shaft 8 is pushed to be in the plug pin state or the locking state, the drainage or plug pin oil inlet 12 is normally opened, external water enters the cylinder body 4, the pressure difference of the left side and the right side of the pin shaft 8 is reduced, the spring force of the compression spring 5 is ensured, and the pin pulling cannot occur due to accidental action of the pin shaft 8. When the pin needs to be pulled out, high-pressure hydraulic oil is pumped into the pin pulling oil inlet 14, the oil liquid pushes the piston 6 to move towards the left side, the compression spring 5 is further compressed, the piston 6 drives the pin shaft 8 to move towards the bottom of the cylinder body 4 together, water in the cavity flows out from the drainage or the pin oil inlet 12, the pin shaft 8 is drawn out from a pin shaft 8 hole of the lifting lug seat 1, when the limiting cylinder 15 on the right side of the piston 6 reaches the bottom of the cylinder body 4 and cannot move and is limited, the pin pulling action is finished, and lifting lugs on two sides of the lifting lug seat 1 are opened. If there is not the spacing section of thick bamboo 15 on piston 6 right side, then piston 6 can continue to the right side motion, leads to the spring compression to the state of closing a circle, and pressure is bigger, and the hydraulic pressure that needs is higher, causes the inside and outside pressure difference of jar simultaneously bigger, is unfavorable for pressure seal, has the overload risk of structural strength moreover.
When on land, because there is no pressure difference problem between water and hydraulic oil, the drain or plug oil inlet 12 can be used as the hydraulic oil inlet of the auxiliary plug, if the compression spring 5 is still used, the drain or plug oil inlet 12 is only used when large plug force is needed, and the plug can be realized by the counterforce of the compression spring 5 generally; if the compression spring 5 is not used, the oil inlet 14 of the pin pulling oil inlet and the oil outlet of the water discharging or pin inserting oil inlet 12 are alternated, so that the function of the double-acting hydraulic cylinder is realized, and the pin pulling and inserting are controlled by hydraulic pressure.
The foregoing is only a preferred embodiment of this patent, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of this patent, and these modifications and substitutions should also be regarded as the protection scope of this patent.
Claims (6)
1. The utility model provides a gravity unhook device that gasbag buoyancy was salvaged under water which characterized in that: the lifting lug comprises a lifting lug seat, wherein clamping plates are integrally extended downwards on the left side and the right side of the lifting lug seat, a hook accommodating groove is reserved between the two clamping plates, pin holes are formed in the two clamping plates, pin shafts capable of transversely penetrating through the hook accommodating groove are movably penetrated in the pin holes, a mounting disc is connected to the left side of the clamping plate on the left side of the lifting lug seat, a cylindrical cylinder body which transversely extends leftwards and rightwards and is hollow is connected to the left side of the mounting disc, a piston capable of sliding leftwards and rightwards in the cylinder body is arranged in the cylinder body, a through hole is formed in the center of the mounting disc, the left end of each pin shaft penetrates through the through hole to extend into the cylinder body and is connected with the center of the right end face of the piston, the inner diameter of the cylinder body and the diameter of the right end face of the piston are both larger than, the cylinder is characterized in that an annular oil inlet groove is formed in the outer circumferential surface of the right end of the piston, the oil inlet groove is communicated with the left end face of the mounting plate, a pin pulling oil inlet communicated with the oil inlet groove is formed in the side wall of the right end of the cylinder body, a compression spring is arranged between the left end face of the piston and the left end face of the cylinder body, and a drainage or bolt oil inlet is formed in the left end face of the cylinder body.
2. The gravity unhooking device for underwater airbag buoyancy salvage according to claim 1, characterized in that: the left side of the left end face of the piston is connected with a section of limiting cylinder, the diameter of the limiting cylinder is smaller than that of the piston, and the compression spring is sleeved outside the limiting cylinder.
3. The gravity unhooking device for underwater airbag buoyancy salvage according to claim 1, characterized in that: the center of the left end face of the pin shaft extends leftwards integrally to form a positioning pin, the diameter of the positioning pin is smaller than that of the pin shaft, the positioning pin penetrates into the piston from the center of the right end face of the piston and is fixed through a locking nut, and a sealing ring is sleeved on the positioning pin.
4. The gravity unhooking device for underwater airbag buoyancy salvage according to claim 1, characterized in that: the right end face of the mounting plate is tightly attached to the surface of the clamping plate, a boss protruding leftwards is arranged in the center of the left end face of the mounting plate around the through hole, an opening at the right end of the cylinder body is sleeved on the boss, an outward flange is arranged at the right end of the cylinder body, and the outward flange, the mounting plate and the clamping plate of the cylinder body are fixed together through bolts.
5. The gravity unhooking device for underwater airbag buoyancy salvage according to claim 1, characterized in that: and oil seals are arranged between the outer circumferential surface of the piston and the inner wall surface of the cylinder body and between the outer circumferential surface of the pin shaft and the inner wall surface of the through hole.
6. The gravity unhooking device for underwater airbag buoyancy salvage according to claim 1, characterized in that: and the upper part of the lifting lug seat is provided with a lifting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021615503.7U CN212387563U (en) | 2020-08-06 | 2020-08-06 | Gravity unhooking device for underwater airbag buoyancy salvage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021615503.7U CN212387563U (en) | 2020-08-06 | 2020-08-06 | Gravity unhooking device for underwater airbag buoyancy salvage |
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| Publication Number | Publication Date |
|---|---|
| CN212387563U true CN212387563U (en) | 2021-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021615503.7U Active CN212387563U (en) | 2020-08-06 | 2020-08-06 | Gravity unhooking device for underwater airbag buoyancy salvage |
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| Country | Link |
|---|---|
| CN (1) | CN212387563U (en) |
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- 2020-08-06 CN CN202021615503.7U patent/CN212387563U/en active Active
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