Eccentric locking mechanism applied to zero-second falling connector and connector thereof
Technical Field
The invention relates to the technical field related to carrier rocket filling equipment, in particular to an eccentric locking mechanism applied to the filling or discharging of liquid nitrogen, liquid oxygen and liquid methane and a zero-second falling connector thereof.
Background
The low-temperature liquid connector is applied to a low-temperature liquid rocket filling system, the connector is connected with a filling port in a filling or discharging stage in a leakage-free mode, and the connector is guaranteed to reliably realize unlocking and falling and self sealing after falling after the rocket takes off to a certain height, namely reliable connection, reliable sealing and zero-second falling reliability are guaranteed. In the prior art, patent CN 106402547A discloses a low-temperature self-sealing connector, which has low reliability of zero-second falling. The locking mechanism of the connector is mostly in a claw type, before the rocket takes off, the claw is required to be driven by the air cylinder to unlock and fall off in advance, if launching is delayed or cancelled, the connector needs to be manually butted again, and the locking mechanism is not suitable for occasions of unattended operation and zero-second falling.
Therefore, how to provide a locking mechanism with high connection locking reliability is a technical problem to be solved urgently by those skilled in the art.
Disclosure of Invention
In order to solve at least part of the above technical problems, the present invention provides an eccentric locking mechanism applied to a zero-second-drop connector, wherein the eccentric locking mechanism comprises: an eccentric wheel shaft; the eccentric wheels are symmetrically arranged at two ends of the eccentric wheel shaft; the two upper connecting rods are symmetrically arranged on the eccentric wheel shaft; the lower connecting rods are connected to the upper connecting rods through basket nuts; and adjusting the eccentric wheel pressing position by adjusting the turnbuckle to change the position of the lower connecting rod connected to the upper connecting rod.
In some embodiments, in the eccentric locking mechanism applied to a zero-second drop connector, the link comprises: the two upper connecting rods are symmetrically arranged on the eccentric wheel shaft; the lower connecting rods are connected to the upper connecting rods through basket nuts; the length of the connecting rod is adjusted by adjusting the turn nut to change the position of the lower connecting rod connected to the upper connecting rod.
In some embodiments, the eccentric locking mechanism applied to the zero-second-drop connector further comprises: one long arm rod is arranged on one eccentric wheel, and the other long arm rod is arranged on the other eccentric wheel; the connecting shaft is horizontally arranged between the two long arm rods, and a steel cable limiting hole is formed in the connecting shaft.
In some embodiments, the eccentric locking mechanism applied to the zero-second-drop connector further comprises: and the steel cable is fixed in the steel cable limiting hole.
In some embodiments, the eccentric locking mechanism applied to the zero-second-drop connector further comprises: a planar stop block; and after the connector body is butted with the arrow upper valve, the plane stop block is contacted with the stop block on the side surface of the flange plate of the arrow upper valve.
The invention further provides a zero-second falling connector comprising the eccentric locking mechanism, wherein after the connector body is in butt joint with the arrow upper valve, the length of the connecting rod is adjusted, so that the eccentric wheel is tightly pressed on the arrow upper valve.
In some embodiments, the zero second drop connector including an over-center locking mechanism, wherein the zero second drop connector comprises: the connecting body comprises a body shell and two bosses arranged on the outer side wall of the body shell; the annular cylinder upper seat is arranged on the boss; the annular cylinder lower seat is sleeved on the annular cylinder upper seat.
In some embodiments, the zero-second drop connector includes an eccentric locking mechanism, and the annular cylinder lower seat includes a first filler neck and a raised seat.
In some embodiments, the zero-second drop connector includes an over-center locking mechanism, and the lower link is disposed on the boss mount.
The eccentric locking mechanism applied to the zero-second falling connector provided by the embodiment of the invention has at least one of the following beneficial effects:
according to the eccentric locking mechanism applied to the zero-second falling connector, the steel cable limiting hole is formed in the middle of the connecting shaft, the steel cable is fixed in the steel cable limiting hole, the steel cable pulls the connecting shaft to drive the eccentric wheel to rotate, the self-locking capacity of the eccentric wheel is unlocked, in the falling process, the plane stop block on the eccentric wheel is always in contact with the semicircular plane stop block on the side face of the flange plate of the valve on the arrow, the eccentric wheel is continuously pushed to rotate, the complete falling is achieved, and the zero-second falling reliability is high. The steel cable pulls the passive unlocking and falling, the unlocking is not driven by an external energy source, the inherent reliability is high, and the zero-second falling is realized.
The zero-second falling connector comprising the eccentric locking mechanism is characterized in that a connector body assembly is in butt joint with the rocket upper valve, a handle of the eccentric locking mechanism forms an angle of 20 degrees with the horizontal direction, a turnbuckle nut is screwed to a specified torque value, an eccentric wheel is fixed on a flange plate of the rocket upper valve in a self-locking mode, connection and locking of the connector are achieved, butt joint and locking are easy to operate, manual locking can be achieved, the connector is provided with a self-locking structure, and connection and locking reliability is high.
The zero-second falling connector comprising the eccentric locking mechanism can reduce the load on an arrow body during falling by adjusting the length of the long arm rod of the eccentric wheel.
Drawings
FIG. 1 is a schematic diagram of an over-center locking mechanism for a zero-second drop connector according to one embodiment of the present invention;
FIG. 2 is a first schematic diagram of a zero second drop connector including an over center locking mechanism according to one embodiment of the present invention;
FIG. 3 is a second schematic diagram of a zero second drop connector including an over center locking mechanism according to one embodiment of the present invention;
fig. 4 is a third structural schematic view of a zero second drop connector including an over-center locking mechanism according to one embodiment of the present invention.
Reference numerals:
1 represents a connector body, 107 represents a body shell, 108 represents a boss, 2 represents an arrow upper valve, 202 represents a flange plate, 3 represents an eccentric locking mechanism, 301 represents an eccentric wheel, 302 represents an eccentric wheel shaft, 303 represents an upper connecting rod, 304 represents a basket nut, 305 represents a lower connecting rod, 306 represents a long arm rod, 307 represents a connecting shaft, 308 represents a wire rope limiting hole, 309 represents a plane stopper, 4 represents an annular cylinder upper seat, 5 represents an annular cylinder lower seat, 501 represents a convex support, 502 represents a first nozzle connecting pipe, 7 represents a small shaft, and 9 represents a wire rope.
Detailed Description
Reference will now be made in detail to various exemplary embodiments of the invention, the detailed description should not be construed as limiting the invention but as a more detailed description of certain aspects, features and embodiments of the invention.
It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Further, for numerical ranges in this disclosure, it is understood that the upper and lower limits of the range, and each intervening value therebetween, is specifically disclosed. Every smaller range between any stated value or intervening value in a stated range and any other stated or intervening value in a stated range is encompassed within the invention. The upper and lower limits of these smaller ranges may independently be included or excluded in the range.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Although only preferred methods and materials are described herein, any methods and materials similar or equivalent to those described herein can be used in the practice or testing of the present invention. All documents mentioned in this specification are incorporated by reference herein for the purpose of disclosing and describing the methods and/or materials associated with the documents. In case of conflict with any incorporated document, the present specification will control.
It will be apparent to those skilled in the art that various modifications and variations can be made in the specific embodiments of the present disclosure without departing from the scope or spirit of the disclosure. The specification and examples are exemplary only.
As used herein, the terms "comprising," "including," "having," "containing," and the like are open-ended terms that mean including, but not limited to.
As used herein, "and/or" includes any and all combinations of the stated items.
The present invention will be further described with reference to the following detailed description and accompanying drawings.
As shown in fig. 1 to 4, the present invention provides an eccentric locking mechanism applied to a zero-second drop connector, wherein the eccentric locking mechanism includes: an eccentric hub 302; two upper connecting rods 303 symmetrically arranged on the eccentric wheel shaft 302; two lower links 305, said lower links 305 being connected to said upper links 303 by means of a turnbuckle 304; wherein the eccentric 301 pressing position is adjusted by adjusting the turnnut 304 to change the position where the lower connecting rod 305 is connected to the upper connecting rod 303.
The eccentric locking mechanisms 3 are arranged on two sides of the connector body 1, the length of the eccentric locking mechanisms 3 is adjusted by adjusting the turnbuckle 304, the eccentric wheels 301 are guaranteed to be tightly pressed on the flange plates 202 of the arrow valve 2, the outer contours of the eccentric wheels 301 are irregular, the eccentric wheels 301 have a self-locking function structurally, and the connection reliability is guaranteed.
In the above solution, in the eccentric locking mechanism, the eccentric locking mechanism further includes: two long-arm levers 306, one long-arm lever 306 is arranged on one eccentric wheel 301, and the other long-arm lever 306 is arranged on the other eccentric wheel 301; a connecting shaft 307 horizontally arranged between the two long arm levers 306, and a steel cable limiting hole 308 is formed on the connecting shaft 307.
In the above solution, in the eccentric locking mechanism, the steel cable 9 is fixed in the steel cable limiting hole 308.
The steel cable 9 is fixed in the steel cable limiting hole 308, the steel cable 9 pulls the connecting shaft 307 to move, the eccentric wheel 301 is driven to rotate, the self-locking capacity of the eccentric wheel 301 is unlocked, and therefore the eccentric wheel can rotate under the action of external force. In the falling process, the plane stop block 309 on the eccentric wheel 301 is always in contact with the semicircular plane stop block on the side face of the flange plate 202 of the arrow upper valve 2, the eccentric wheel 301 is continuously pushed to rotate until the complete falling is realized, and the zero-second falling reliability is high. The steel cable pulls the passive unlocking and falling, the unlocking is not driven by an external energy source, the inherent reliability is high, and the zero-second falling is realized.
In the above scheme, the plane stop 309 is arranged on the eccentric wheel of the eccentric locking mechanism; after the connector body 1 is butted with the rocket valve 2, the plane stopper 309 contacts with a stopper on the side of the flange plate 202 of the rocket valve 2.
The invention also provides a zero-second falling connector comprising the eccentric locking mechanism, wherein after the connector body 1 is butted with the arrow valve 2, the length of the connecting rod is adjusted, so that the eccentric wheel 301 is pressed on the arrow valve 2.
In the above solution, the zero-second drop connector including the eccentric locking mechanism, wherein the zero-second drop connector includes: the connecting body 1 comprises a body shell 107 and two bosses 108 arranged on the outer side wall of the body shell 107; an annular cylinder upper seat 4 provided on the boss 108; and the annular cylinder lower seat 5 is sleeved on the annular cylinder upper seat 4.
In the above solution, in the zero-second drop connector including the eccentric locking mechanism, the lower seat 5 of the annular cylinder includes a first filler neck 502 and a convex support 501.
In the above-described embodiment, in the zero-second-release connector including the eccentric locking mechanism, the lower link 305 is disposed on the protrusion support 501.
The lower seat 5 of the annular cylinder is provided with a convex support 501 which is connected with an eccentric locking mechanism by a small shaft 7.
It will be apparent to those skilled in the art that various modifications and variations can be made in the specific embodiments of the present disclosure without departing from the scope or spirit of the disclosure. Other embodiments will be apparent to those skilled in the art from consideration of the specification. The specification and examples are exemplary only.