GB2535894A - Impact pin-type cable severing mechanism and use method therefor - Google Patents
Impact pin-type cable severing mechanism and use method therefor Download PDFInfo
- Publication number
- GB2535894A GB2535894A GB1604710.2A GB201604710A GB2535894A GB 2535894 A GB2535894 A GB 2535894A GB 201604710 A GB201604710 A GB 201604710A GB 2535894 A GB2535894 A GB 2535894A
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- United Kingdom
- Prior art keywords
- blade
- cable
- groove
- hook
- trigger piece
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D15/00—Shearing machines or shearing devices cutting by blades which move parallel to themselves
- B23D15/12—Shearing machines or shearing devices cutting by blades which move parallel to themselves characterised by drives or gearings therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F11/00—Cutting wire
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- Mechanical Engineering (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
An impact pin-type cable severing mechanism consisting of a blade casing, a cable press plate, an ejection control casing, and a movable hook. Provided within the blade casing are a blade and a powerful compression spring below the blade. The ejection control casing is connected with the movable hook. A trigger piece and a blade latch are provided within the ejection control casing. In the impact pin-type cable severing mechanism, when the hook is taut, the blade latch within the ejection control casing is utilized to lock the blade, thus allowing the compression spring to remain in a compressed state, and when the hook is slack, the trigger piece is impacted by a rebound force to drive the blade latch into separating from the blade, and the compression spring is released to eject the blade to the cable press plate to sever a cable. Also disclosed is a use method for employing the cable severing mechanism in a seafloor observatory. The impact pin-type cable severing mechanism of the present invention is capable of effectively severing a cable in equipment when a relevant instruction is received, thus implementing equipment separation.
Description
FIRING PIN TYPE CABLE CUTTING MECHANISM AND OPERATING METHOD THEREOF
Field of the Invention
The present invention relates to a mechanism and particularly relates to that for cutting a cable and an operating method of the mechanism in a seafloor observatory.
Background of the Invention
Ever since human could travel on the sea, clue to technical and economic limitations, human's knowledge to the sea has been often obtained on the ship, which determines that our exploration to the sea is still superficial. With the development of science and technology and upon urgent demands of different countries in the aspects of national security, economy, strategy and the like, exploration to the sea, in particular to deep sea, has a spurt development. As a major means for deep sea observation, studying on the related technologies of the seafloor observatory (also called a submerged buoy) becomes the key of research and development for marine technicians at present.
Popularly speaking, the seafloor observatory is composed of a recoverable unit and a discardable one, and laid at the seafloor by a scientific investigation ship; after finishing a long-term observation task (several months to years), the seafloor observatory receives an unhooking command sent by a ship-borne deck unit so that its recoverable unit and discardable unit are separated from each other, and finally, the recoverable unit floats upwards to the sea surface by virtue of buoyancy and then can be found and recovered by the researchers, while the discardable unit is left at the seafloor.
In some observation environments, a sensor needs to he mounted in the discardable unit and transmits measurement data to the data acquisition system of the recoverable unit through a cable; in this case, the recoverable unit and the discardable unit cannot he separated by using a conventional unhooking device only; therefore, it is necessary to develop a mechanism that is capable of simply and effectively cutting the cable connecting the discardable part and the recoverable part, so that the discardable part and the recoverable one of the sealloor observatory can he separated automatically and effectively.
Summary of the Invention
With regard to the above-mentioned defects, one of the objects of the present invention is to provide a firing pin type cable cutting mechanism that is capable of simply and effectively cutting a cable which connects a discardable part and a recoverable one so that these two parts of the seafloor observatory can he separated automatically.
The object of the present invention is achieved through the following technical solutions: A firing pin type cable cutting mechanism includes: a cable hold-down plate, wherein a first groove matched with a blade and a second groove allowing a cable to be embedded in are formed in the lower surface of the cable hold-down plate; the first groove and the second groove are perpendicular to each other and form a cross-shaped structure; the first groove is deeper than the second groove; a blade box, wherein the top of the blade box is fixedly connected with the cable hold-down plate and the length direction of the top of the blade box is parallel to the first groove; a through hole extending longitudinally is formed in one side surface of the blade box parallel to the extension direction of the first groove; the blade is arranged in the blade box, and the cutting edge of the blade is upward and directly faces the first groove; besides, a convex returning device is arranged on one side surface of the blade; the returning device projects out of the blade box via the through hole and is capable of sliding up and down along the through hole; a blade clamping groove is formed in the middle of the other side surface of the blade; the lower edge of the blade is fixedly connected with one end of a compression spring, and the other end of the compression spring is fixed on the inner bottom surface of the blade box; the compression spring is capable of making the blade get in the first groove to cut the cable when it is completely released; a cable cutting mechanism retaining block fixed on the lower portion of the side surface with the through hole of the blade box; an ejection control box connected with the blade box and located on one side surface far away from the cable cutting mechanism retaining block, wherein a trigger piece and a blade latch are fixed on the upper portion of the ejection control box; the trigger piece is a curved plate in an L shape as a whole, and is fixed on the inner side surface of the ejection control box through a trigger piece rotating shaft at a position near the point of inflection; the trigger piece rotates as a whole with the trigger piece rotating shaft as an axis, and the end, far away from the shaft, of the trigger piece is placed horizontally, while the end, near the shaft, of the trigger piece is downward; the blade latch is a curved plate in an inversed-Z shape as a whole, and is fixed on the inner side surface of the ejection control box through a blade latch rotating shaft at one of the points of inflection and capable of rotating as a whole with the blade latch rotating shaft as an axis, and the end, far away from the shaft, of the blade latch can he lapped on the end, near the shaft, of the trigger piece, while the end, near the shaft, of the blade latch can be embedded into the blade clamping groove of the blade; the ends, far away from the shafts, of the trigger piece and the blade latch are connected to the top plate of the ejection control box through a trigger piece fixing spring and a blade latch fixing spring, respectively; and a hook arranged on the lower side of the ejection control box, wherein the upper portion of the hook penetrates through the bottom surface of the ejection control box to be located in the ejection control box, and a hook spring sleeves the upper portion of the hook; the upper end of the hook spring is fixedly connected with the top of the hook, while the lower end of the hook spring is fixedly connected with the inner bottom surface of the ejection control box; a striking pillar directly facing the end, far away from the shaft, of the trigger piece is arranged at the top end of the hook.
Preferably, the blade, the compression spring, the trigger piece, the blade latch, the trigger piece fixing spring, the blade latch fixing spring, the hook, the hook spring and the striking pillar are all made of a titanium alloy material.
Preferably, the second groove penetrates through the two ends of the cable hold-down plate where the second groove is formed.
Preferably, (he depth of the first groove is 1.2-1.5 times the depth of the second groove.
Preferably, the cable hold-down plate is a cuboid having a thickness more than two times the diameter of the cable and placed horizontally, or a semi-cylindrical body.
Preferably, the through hole is located at the upper 2/3 section of the exposed portion of one side surface of the blade box.
Preferably, when the compression spring is completely compressed, the upper edge of the blade is located at an upper 1/6 position in the blade box.
The other object of the present invention is to provide an operating method of the cable cutting mechanism in the seafloor observatory, wherein the scafloor observatory is composed of a recoverable unit and a discardable unit which are connected by the cable; before a seal lour observation experiment, the firing pin type cable cutting mechanism is fixedly mounted on a frame between the recoverable unit and the discardable unit of the seafloor observatory with the cable cutting mechanism retaining block; the cable connecting the recoverable unit and the discardahle unit penetrates through the second groove of the cable hold-down plate, and then is fixed and strained by the cable hold-down plate; the returning device on the side surface of the blade is pulled downwards to keep the compression spring in the blade box in a completely compressed state; meanwhile, the recoverable unit and the discardahle unit of the seafloor observatory are fixed with a tensioned steel wire rope; the movable hook is hooked up to the tensioned steel wire rope and thus kept in a tensioned state so that the hook spring in the ejection control box can he compressed sufficiently; in addition, the end, near the shaft, of the blade latch in the ejection control box is embedded in the blade clamping groove to clamp the compression spring which is in the completely compressed state, and the end, far away from the shaft, of the blade latch is pressed below the end, near the shaft, of the trigger piece; and after the seafloor observation experiment, the observatory receives an unhooking command sent by a ship-borne data acquisition control system, and then the steel wire rope fixing the recoverable unit and the discardable unit is turned to a slack state from the tensioned state and the hook hooked up to the steel wire rope is loosened; under the action of the elastic force of the hook spring, the hook quickly bounces upwards so that the striking pillar at the top of the hook strikes the end, far away from the shaft, of the trigger piece, and then the trigger piece rotates as a whole with the trigger piece rotating shaft as an axis; according to the lever principle, the end, near the shaft, of the trigger piece rotates downwards to drive the end, far away from the shaft, of the blade latch to rotate downwards; and similarly, according to the lever principle, the end, near the shaft, of the blade latch rotates to get out of the blade clamping groove of the blade; at that moment, the compression spring is released to drive the blade above to eject into the first groove of the cable hold-down plate and cut the cable held in the second groove, as a result, the recoverable unit and the discardable unit of the scatloor observatory are disconnected; and finally, the recoverable unit floats upwards to the sea surface by virtue of buoyancy, while the discardable unit is left at the seafloor. In the firing pin type cable cutting mechanism of the present invention, when the hook is strained, the blade is locked by the blade latch in the ejection control box so that the compression spring is kept in the compressed state; when the hook becomes slack, it strikes the trigger piece under the action of rebound force to separate the blade latch from the blade, and then the compression spring is released to eject the blade to the cable hold-down plate to cut the cable.
Compared with the prior art, the present invention has the beneficial effects that: the firing pin type cable cutting mechanism can be applied to detection equipment which is difficult to reach or needs to be remotely controlled, such as the seafloor observatory, based on the cooperative relation of the hook, the compression spring, the blade and the ejection control box; the cable connecting the discardable part and the recoverable pail can be cut off simply and effectively after a relevant instruction is received, and therefore, the discardable part and the recoverable part of the seafloor observatory can be separated automatically.
Brief Description of the Drawings
Fig. 1 is an overall structural schematic diagram of one side of a cable cutting mechanism of the present invention.
Fig. 2 is an overall structural schematic diagram of the other side of the cable cutting mechanism of the present invention. Fig. 3 is a structural schematic diagram of the cable cutting mechanism of the present invention before cutting off the cable.
Fig. 4 is a structural schematic diagram of the cable cutting mechanism of the present invention after cutting off the cable.
Reference numbers in the figures are described as follows: 1: blade box; 11: through hole; 12: blade; 121: returning device; 122: blade clamping groove; 13: compression spring; 2: cable hold-down plate; 21: first groove; 22: second groove; 3: hook; 31: hook spring; 32: striking pillar; 4: ejection control box; 41: trigger piece; 411: trigger piece fixing spring; 412: trigger piece rotating shall; 42: blade latch; 421: blade latch fixing spring; 422: blade latch rotating shaft; 5: cable cutting mechanism retaining block; 6: cable.
Detailed Description of the Embodiments
The present invention is further described below in combination with specific embodiments, wherein the drawings arc merely used for exemplary description and just represent schematic diagrams rather than real object, and thus cannot be understood as limitations to the present patent; for better describing the embodiments of the present invention, some components in the drawings may be omitted, magnified or reduced, which do not represent actual sizes of products; it could he understood for those skilled in the art. that some common structures in the drawings and descriptions thereof may be omitted.
The same or similar signs in the drawings of the present invention correspond to the same or similar components; in the descriptions of the present invention, it should he understood that, if orientations or position relations indicated by terms such as 'up', 'down', 'top', 'bottom, 'upright' and 'horizontal' are those illustrated in the drawings, it is just to facilitate describing the present invention and simplifying the descriptions, rather than indicating or implying that the mentioned devices or components must have specific orientations and be manufactured and operated in specific orientations; hence, the words describing the position relations in the drawings are merely used for exemplary descriptions and cannot be understood as limitations to the present patent.
As shown in Figs. 1 and 2, the cable cutting mechanism of the present invention is mainly composed of a blade box 1, a cable hold-down plate 2, an ejection control box 4 and a movable hook 3; the cable hold-down plate 2 is a cuboid with a thickness more than two times the diameter of the cable which is placed horizontally (it can also be a semi-cylindrical structure as shown in Fig. 1 or other structures, as long as the existence of a plane in which two grooves can he formed and which meets the depth requirement of the grooves is guaranteed); cross-shaped grooves perpendicular to each other are formed in the lower surface of the cuboid, wherein the depth of the deeper groove 21 is 1.2-1.5 times the depth of the shallower groove 22, and the shallower groove 22 is wide enough to allow the cable to be embedded in; the length direction of the top of the blade box 1 is parallel to the deeper groove 21, and the top of the Made box 1 is fixedly connected with the cable hold-down plate 2; for example, the top of the blade box 1 can be fixed on the two end portions of the deeper groove 21 or on the outer sides of the two end portions.
A through hole 11 extending longitudinally is formed in the upper 2/3 section of the exposed portion of a side surface, parallel to the extension direction of the deeper groove 21, of the blade box 1; a blade 12 is arranged inside the blade box 1; the cutting edge of the blade 12 is upward and directly faces the deeper groove 21; a convex cylindrical or prismatic returning device 121 is arranged on one surface of the blade 12; the returning device 121 projects out of the blade box 1 via the through hole 11 and is capable of sliding up and down along the through hole 11; a blade clamping groove 122 is formed in the middle of the other surface of the blade 12 (preferably, the blade clamping groove 122 is designed in such a way that one side thereof far away from the end, near the shaft, of the blade latch 42 is inclined upwards to ensure steady cooperation of the Made clamping groove 122 and the blade latch 42); the lower edge of the blade 12 is fixedly connected with a strong compression spring 13; when the strong compression spring 13 is completely compressed, the upper edge of the blade 12 is located in an upper 1/6 position in the blade box 1 (that is, the distance of the cutting edge to the top of the blade box 1 is 1/6 of the height of the whole blade box 1), and the strong compression spring 13 is capable of making the blade 12 to get in the deeper groove 21 when it is completely released; the lower end of the strong compression spring 13 is fixed on the inner bottom surface of the blade box 1. For easy installation, the blade can be fixed on a blade connecting piece to which the compression spring 13 is fixedly connected, and meanwhile, the blade clamping groove 122 is formed in the blade connecting piece.
A cuboid-shaped cable cutting mechanism retaining block 5 is externally connected to the lower portion of the side with the through hole 11 of the Made box 1; the other side of the blade box 1 is connected with an external ejection control box 4; a trigger piece 41 and a blade latch 42 are fixed on the upper portion of the ejection control box 4; the trigger piece 41 is a curved plate in an L shape as a whole, and is fixed on the inner side surface of the ejection control box 4 through a trigger piece rotating shaft 412 at a position near the point of inflection; the trigger piece rotates as a whole with the trigger piece rotating shaft 412 as an axis, and the end, far away from the shaft, of the trigger piece 41 is horizontal approximately, while the end, near the shaft, of the trigger piece 41 is downward; the blade latch 42 is a curved plate in an approximate inversed-Z shape as a whole, and is fixed on the inner side surface of the ejection control box 4 through the blade latch rotating shaft 422 at one of the points of inflection and capable of rotating as a whole with the blade latch rotating shaft 422 as an axis, and the end, far away from the shaft, of the blade latch 42 can be lapped on the end, near the shaft, of the trigger piece 41, while the end, near the shaft, of the blade latch 42 can be embedded into the blade clamping groove 122 of the blade 12; the ends, far away from the shafts, of the trigger piece 41 and the blade latch 42 are connected to the top plate of the ejection control box 4 through the trigger piece fixing spring 411 and the blade latch fixing spring 421, respectively; a movable hook 3 is arranged on the lower side of the ejection control box 4; the upper portion of the movable hook 3 is located inside the ejection control box 4 and a hook spring 31 sleeves the upper portion of the movable hook 3; the upper end of the hook spring 31 is fixedly connected with the top of the movable hook, while the lower end of the hook spring is fixedly connected with the inner bottom surface of the ejection control box 4; a striking pillar 32 directly facing the end, far away from the shaft, of the trigger piece 41 is arranged at the top end of the movable hook 3.
The blade 12, the compression spring 13, the trigger piece 41, the blade latch 42, the trigger piece fixing spring 411, the blade latch fixing spring 421, the hook 3, the hook spring 31 and the striking pillar 32 are all made of a titanium alloy material; as a result, when applied to the seafloor observatory, the firing pin type cable cutting mechanism can be prevented from being corroded by seawater.
The cable cutting mechanism of the present invention can he applied to the scatloor observatory that is composed of a recoverable unit and a discardable unit which are connected by the cable 6. When the cable cutting mechanism is applied to the seafloor observatory: First, before a seafloor observation experiment, the cable cutting mechanism is fixedly mounted on a frame between the recoverable unit and the discardable unit of the seafloor observatory with the cable cutting mechanism retaining block 5; as shown in Fig. 3, the cable 6 connecting the recoverable unit and the discardable unit penetrates through the shallower groove 22 of the cable hold-down plate 2, and then is fixed and strained by the cable hold-down plate 2; the returning device 121 on the side surface of the blade 12 is pulled downwards to compress the compression spring 13 in the blade box 1; meanwhile, the recoverable unit and the discardable unit of the seafloor observatory are fixed with a tensioned steel wire rope; the movable hook 3 is hooked up to the tensioned steel wire rope and thus kept in a tensioned state so that the hook spring 31 in the ejection control box 4 can be compressed sufficiently; meanwhile, the end, near the shaft, of the blade latch 42 in the ejection control box 4 is embedded in the blade clamping groove 122 of the returned blade 12 to damp the ready strong compression spring and the blade, and the end, far away from the shaft, of the blade latch 42 is pressed below the end, near the shaft, of the trigger piece 41.
After the seafloor observation experiment is finished, the observatory receives an unhooking command sent by a ship-borne data acquisition control system, and then the steel wire rope fixing the recoverable unit and the discardable unit is turned to a slack state from the tensioned state and the movable hook 3 hooked up to the steel wire rope is loosened; as shown in Fig. 4, under the action of the elastic force of the hook spring 31, the movable hook 3 quickly bounces upwards so that the striking pillar 32 at the top of the hook strikes the end, far away from the shaft, of the trigger piece 41, and then the trigger piece is enabled to rotate as a whole with the trigger piece rotating shaft 412 as an axis; according to the lever principle, the end, near the shaft, of the trigger piece 41 rotates downwards to drive the end, far away from the shaft, of the blade latch 42 to rotate downwards, and similarly, according to the lever principle, the end, near the shaft, of the blade latch 42 rotates to get out of the blade clamping groove 122 of the blade 12; at that moment, the compression spring 13 rebounds to drive the blade 12 above to eject into (he deeper groove 21 of the cable hold-down plate 2 and cut the cable 6 held in the shallower groove 22; as a result, the recoverable unit and the discardable unit of the seafloor observatory are disconnected; finally, the recoverable unit floats upwards to the sea surface by virtue of buoyancy and can he found and recovered by the researchers, while the discardable unit is left at the seafloor.
The foregoing detailed descriptions are specific descriptions of the feasible embodiments of the present invention; the embodiments are not intended to limit the patent scope of the present invention; all equivalent implementations or variations not departing from the spirit of the present invention should fall into the patent scope of the present application.
Claims (8)
- Claims 1. A firing pin type cable cutting mechanism, comprising: a cable hold-down plate (2), wherein a first groove (21) matched with a blade (12) and a second groove (22) allowing a cable to he embedded in are formed in the lower surface of the cable hold-down plate (2); the first groove (21) and the second groove (22) arc perpendicular to each other and form a cross-shaped structure; the first groove (21) is deeper than the second groove (22); a blade box (1), wherein the length direction of the top of the blade box (1) is parallel to the first groove (21) and the top of the blade box (1) is fixedly connected with the cable hold-down plate (2); a through hole (11) extending longitudinally is formed in one side surface of the blade box (1) parallel to the extension direction of the first groove (21); the blade (12) is arranged in the blade box (1), and the cutting edge of the blade (12) is upward and directly faces the first groove (21); besides, a convex returning device (121) is arranged on one side surface of the blade (12); the returning device (121) projects out of the blade box (1) via the through hole (11) and is capable of sliding up and down along the through hole (11); a blade clamping groove (122) is formed in the middle of the other side surface of the blade (12); the lower edge of the blade (12) is fixedly connected with one end of a compression spring (13), and the other end of the compression spring (13) is fixed on the inner bottom surface of the blade box (1); the compression spring (13) is capable of driving the blade (12) to get in the first groove (21) to cut the cable when it is completely released; a cable cutting mechanism retaining block (5) fixed on the lower portion of the side surface with the through hole (11) of the blade box (1); an ejection control box (4) connected with the blade box (1) and located on one side surface far away from the cable cutting mechanism retaining block (5), wherein a trigger piece (41) and a blade latch (42) are fixed on the upper portion of the ejection control box (4); the trigger piece (41) is a curved plate in an L shape as a whole, and is fixed on the inner side surface of the ejection control box (4) through a trigger piece rotating shaft (412) at a position near the point of inflection; the trigger piece rotates as a whole with the trigger piece rotating shaft (412) as an axis, and the end, far away from the shaft, of the trigger piece is placed horizontally, while the end, near the shaft, of the trigger piece is downward; the blade latch (42) is a curved plate in an inversed-Z shape as a whole, and is fixed on the inner side surface of the ejection control box (4) through a blade latch rotating shaft (422) at one of the points of inflection and capable of rotating as a whole with the blade latch rotating shaft (422) as an axis, and the end, far away from the shaft, of the blade latch (42) can be lapped on the end, near the shaft, of the trigger piece (41), while the end, near the shaft, of the blade latch 02) can be embedded into the blade clamping groove (122) of the blade (12); the ends, far away from the shafts, of the trigger piece (41) and the blade latch (42) are connected to the top plate of the ejection control box (4) through a trigger piece fixing spring (411) and a blade latch fixing spring (421), respectively; and a hook (3) arranged on the lower side of the ejection control box (4), wherein the upper portion of the hook (3) penetrates through the bottom surface of the ejection control box (4) to be located in the ejection control box (4), and a hook spring (31) sleeves the upper portion of the hook; the upper end of the hook spring (31) is fixedly connected with the top of the hook (3), while the lower end of the hook spring is fixedly connected with the inner bottom surface of the ejection control box (4); a striking pillar (32) directly facing the end, far away from the shaft, of the trigger piece (41) is arranged at the top end of the hook (3).
- 2. The firing pin type cable cutting mechanism of claim 1, wherein the blade (12), the compression spring (13), the trigger piece (41), the blade latch (42), the trigger piece fixing spring (411), the blade latch fixing spring (421), the hook (3), the hook spring (31) and the striking pillar (32) are all made of a titanium alloy material.
- 3. The firing pin type cable cutting mechanism of claim 1, wherein the second groove (22) penetrates through the two ends of the cable hold-down plate (2) where the second groove is formed.
- 4. The firing pin type cable cutting mechanism of claim 1, wherein the depth of the first groove (21) is 1.2-1.5 times the depth of the second groove (22).
- 5. The firing pin type cable cutting mechanism of claim 1, wherein the cable hold-down plate (2) is a cuboid having a thickness more than two times the diameter of the cable and placed horizontally, or a semi-cylindrical body.
- 6. The firing pin type cable cutting mechanism of claim 1, wherein the through hole (11) is located at the upper 2/3 section of the exposed portion of one side surface of the blade box (1).
- 7. The firing pin type cable cutting mechanism of claim 1, wherein when the compression spring (13) is completely compressed, the upper edge of the blade (12) is located at an upper 1/6 position in the blade box (1).
- 8. An operating method of a firing pin type cable cutting mechanism in a seafloor observatory, wherein the seafloor observatory is composed of a recoverable unit and a discardable unit, which are connected throuth the cable (6), comprising the following steps: before a seafloor observation experiment, the firing pin type cable cutting mechanism of claim 1 is fixedly mounted on a frame between the recoverable unit and the discardable unit of the seafloor observatory with the cable cutting mechanism retaining block (5); the cable (6) connecting the recoverable unit and the discardable unit penetrates through the second groove (22) of the cable hold-down plate (2), and then is fixed and strained by the cable hold-down plate (2); the returning device (121) on the side surface of the blade (12) is pulled downwards to keep the compression spring (13) in the blade box (1) in a completely compressed state; meanwhile, the recoverable unit and the discardable unit of the seafloor observatory are fixed with a tensioned steel wire rope; the hook (3) is hooked up to the tensioned steel wire rope and thus kept in a tensioned state so that the hook spring (31) in the ejection control box (4) can be compressed sufficiently; in addition, the end, near the shaft, of the blade latch (42) in the ejection control box (4) is embedded in the blade clamping groove (122) to clamp the compression spring (13) which is in a completely compressed state, and the end, far away from the shaft, of the blade latch (42) is pressed below the end, near the shaft, of the trigger piece (41); and after the seafloor observation experiment is finished, the observatory receives an unhooking command sent by a ship-borne data acquisition control system, and then the steel wire rope fixing the recoverable unit and the discardable unit is turned to a slack state from the tensioned state and the hook (3) hooked up to the steel wire rope is loosened; under the action of the elastic force of the hook spring (31), the hook (3) quickly bounces upwards so that the striking pillar (32) at the top of the hook strikes the end, far away from the shaft, of the trigger piece (41), and then the trigger piece is enabled to rotate as a whole with the trigger piece rotating shaft (412) as an axis; according to the lever principle, the end, near the shaft, of the trigger piece (41) rotates downwards to drive the end, far away from the shaft, of the blade latch (42) to rotate downwards; and similarly, according to the lever principle, the end, near the shaft, of the blade latch (42) rotates to get out of the blade clamping groove (122) of the blade (12); at that moment, the compression spring (13) is released to drive the blade (12) above to eject into the first groove (21) of the cable hold-down plate (2) and cut the cable (6) held in the second groove (22); as a result, the recoverable unit and the discardable unit of the seafloor observatory are disconnected; finally, the recoverable unit floats upwards to the sea surface by virtue of buoyancy, while the discardable unit is left at the seafloor.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2014/095516 WO2016095271A1 (en) | 2014-12-17 | 2014-12-30 | Impact pin-type cable severing mechanism and use method therefor |
Publications (4)
| Publication Number | Publication Date |
|---|---|
| GB201604710D0 GB201604710D0 (en) | 2016-05-04 |
| GB2535894A true GB2535894A (en) | 2016-08-31 |
| GB2535894B GB2535894B (en) | 2019-08-14 |
| GB2535894B8 GB2535894B8 (en) | 2019-09-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1604710.2A Expired - Fee Related GB2535894B8 (en) | 2014-12-30 | 2014-12-30 | Firing pin type cable cutting mechanism and operating method thereof |
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| Country | Link |
|---|---|
| GB (1) | GB2535894B8 (en) |
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| CN203445513U (en) * | 2013-09-06 | 2014-02-19 | 中英海底系统有限公司 | Integrated deep sea cable salvaging and cutting system |
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2014
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|---|---|---|---|---|
| CN2743102Y (en) * | 2004-07-16 | 2005-11-30 | 中国船舶重工集团公司第七○二研究所 | Under water micropower cutter |
| US20110000081A1 (en) * | 2009-07-01 | 2011-01-06 | Wen-Chen Lee | Underwater cutting device for the handle of MTR plate-type feul |
| CN102033245A (en) * | 2009-09-30 | 2011-04-27 | 中国船舶重工集团公司第七一○研究所 | Acoustic releaser actuating mechanism capable of cutting cable |
| CN203445513U (en) * | 2013-09-06 | 2014-02-19 | 中英海底系统有限公司 | Integrated deep sea cable salvaging and cutting system |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2535894B8 (en) | 2019-09-11 |
| GB2535894B (en) | 2019-08-14 |
| GB201604710D0 (en) | 2016-05-04 |
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