CN111765315A - Air supply connector - Google Patents
Air supply connector Download PDFInfo
- Publication number
- CN111765315A CN111765315A CN202010907368.1A CN202010907368A CN111765315A CN 111765315 A CN111765315 A CN 111765315A CN 202010907368 A CN202010907368 A CN 202010907368A CN 111765315 A CN111765315 A CN 111765315A
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- Prior art keywords
- ball lock
- sleeve
- ball
- piston
- valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L41/00—Branching pipes; Joining pipes to walls
- F16L41/02—Branch units, e.g. made in one piece, welded, riveted
- F16L41/03—Branch units, e.g. made in one piece, welded, riveted comprising junction pieces for four or more pipe members
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
- B64G1/66—Arrangements or adaptations of apparatus or instruments, not otherwise provided for
Abstract
The application provides a gas supply connector, which comprises a valve, a first ball lock, a ground gas circuit board and a second ball lock; the first ball lock is arranged on the valve; the second ball lock is arranged in the ground air circuit board, and the second ball lock and the ground air circuit board are connected into a whole to form a connector body; the connector body is connected and locked with the valve through a first ball lock; a plurality of gas circuit plugs are arranged on the valve along the circumferential direction of the valve, corresponding gas circuit sockets are arranged on the ground gas circuit board, and the gas circuit plugs and the gas circuit sockets are matched to form a gas supply pipeline channel; the first ball lock realizes the separation between the first ball lock and the connector body and the valve in an active unlocking mode, or the connector body realizes the separation between the connector body and the valve in a passive unlocking mode; the active unlocking mode and the passive unlocking mode are independent and redundant. The application can also be installed in the axial direction and the radial direction of the spacecraft, and the adaptability is good.
Description
Technical Field
The application belongs to the technical field of aerospace, and particularly relates to a gas supply connector for an aerospace carrier.
Background
In order to reduce the number of interfaces between the space carrier and the ground gas supply system, multiple gas supply pipelines are combined into a gas supply connector, so that the multiple gas supply pipelines and the space carrier are integrally butted and separated, the gas supply separation risk is reduced, and the reliability of the system is improved. In particular, the zero-second-drop gas supply connector is required to automatically drop after the spacecraft is ignited, which puts higher requirements on the reliability of the drop of the connector.
The traditional air supply connector is generally arranged at the tail part of the spacecraft and is distributed along the axial direction of the spacecraft; the air supply connectors distributed along the radial direction of the space vehicle can only be pulled to fall off passively, but can not be unlocked and fall off actively.
Disclosure of Invention
To overcome, at least to some extent, the problems with the related art, the present application provides an electrical supply connector.
According to an embodiment of the present application, there is provided a gas supply connector comprising a shutter, a first ball lock, a ground gas panel, and a second ball lock; the first ball lock is arranged on the valve; the second ball lock is arranged in the ground gas circuit board, and the second ball lock and the ground gas circuit board are connected into a whole to form a connector body; the connector body is connected and locked with the valve through the first ball lock;
a plurality of air channel plugs are arranged on the valve along the circumferential direction of the valve, corresponding air channel sockets are arranged on the ground air channel plate, and the air channel plugs and the air channel sockets are matched to form an air supply pipeline channel;
the first ball lock realizes the separation between the first ball lock and the connector body and the valve in an active unlocking mode, or the connector body realizes the separation between the connector body and the valve in a passive unlocking mode; the active unlocking mode and the passive unlocking mode are independent and redundant backup.
In the connector, a first mounting hole is formed in the center of the valve, and the first ball lock is mounted in the first mounting hole.
Furthermore, the first ball lock comprises a first ball lock bowl, a piston is arranged in the first ball lock bowl, and the side wall of the upper part of the piston is matched with the inner wall of the first ball lock bowl, so that the piston can move axially by taking the inner wall of the first ball lock bowl as a guide; a first spherical groove is formed in the side wall of the lower portion of the piston; the radius of curvature of the first spherical groove near the top of the piston is smaller than the radius of curvature of the first spherical groove near the bottom of the piston;
a first taper hole is formed in the side wall of the first ball lock bowl, and a first steel ball is arranged at the first taper hole;
a second spherical groove is formed in the inner wall of the valve at the first mounting hole;
when the piston uses the inner wall of first ball lock bowl is the direction and makes axial motion, first steel ball can be through being compressed tightly be close to the first sphere slot at piston top with between the second sphere slot, in order to realize the first ball lock is locked with being connected of valve, perhaps, first steel ball can retract in the first ball lock bowl.
Still further, the first ball lock further comprises a spring seat and a first spring, the spring seat being disposed at a top of the first ball lock bowl; the first spring is disposed in a space between the spring seat and the piston;
the top surface of the piston is provided with an installation groove from the top to the bottom of the piston, and a guide column is arranged in the installation groove; the first spring is sleeved on the guide post, one end of the first spring is arranged in the installation groove, and the other end of the first spring is in contact with the spring seat.
Furthermore, a ball socket is convexly arranged on the bottom surface of the piston from the bottom of the piston to the top of the piston; the ball socket is matched with the top end of the tool ejector rod, and plays a role in guiding the tool ejector rod.
Furthermore, a buffer pad is arranged on the outer side of the first spring and is positioned on the bottom surface of the spring seat, and the buffer pad is used for preventing the piston from directly colliding with the spring seat.
Furthermore, a first sealing ring is arranged on the outer side of the piston near the bottom of the piston, and the first sealing ring is used for initial sealing.
Furthermore, be close to the bottom of first ball lock bowl the outside of first ball lock bowl is provided with the second sealing washer, the second sealing washer is used for right the air feed passageway that second ball lock and first ball lock formed after the butt joint seals.
Furthermore, be located on the lateral wall of first ball lock bowl, first taper hole below is followed the circumference interval of first ball lock bowl is provided with a plurality of round holes, the round hole is used for discharging the compressed gas after first ball lock and the initiative unblock of valve.
In the above air supply connector, a second mounting hole is opened at the center of the ground air channel plate, and the second ball lock is fixedly mounted in the second mounting hole.
Further, the second ball lock comprises a second ball lock bowl and a filler neck, the second ball lock bowl comprises a hollow pipe, and the hollow pipe is in butt joint with the first ball lock bowl; the filler neck is arranged on the side wall of the lower part of the hollow pipe, and compressed gas is introduced into the second ball lock bowl through the filler neck.
Furthermore, the second ball lock bowl further comprises a first step group and a second step group, wherein the first step group and the second step group are wound on the outer wall of the hollow pipe and are arranged along the radial direction of the hollow pipe in the direction far away from the hollow pipe; the first step group comprises two step pairs which are symmetrically arranged by taking the central axis of the hollow pipe as a symmetry axis, and two steps in each step pair are connected through a first arc-shaped wall;
the second step group is correspondingly arranged below the first step group along the axial direction of the hollow pipe; the second step group comprises two symmetrically arranged step pairs, and two steps in each step pair are connected through a second arc-shaped wall; and a limiting arc plate is arranged between the step pair in the first step group and the corresponding step pair in the second step group.
Furthermore, the second ball lock also comprises a second ball lock sleeve, a second steel ball and a second spring;
the second ball lock sleeve comprises a sleeve, and U-shaped grooves are uniformly arranged on the side wall of the upper part of the sleeve to the bottom end of the sleeve at intervals along the circumferential direction of the sleeve, and short sleeve feet and long sleeve feet are respectively arranged on two sides of each U-shaped groove in the circumferential direction of the sleeve;
a third spherical groove is formed in the inner wall of the upper part of the sleeve; the radius of curvature of the third spherical groove near the top of the sleeve is greater than the radius of curvature of the third spherical groove near the bottom of the sleeve;
the inner wall of the upper part of the sleeve below the third spherical groove is in contact with the hollow pipe;
a second taper hole is formed in the side wall of the upper portion of the second ball lock bowl, and the second steel ball is arranged at the second taper hole;
a fourth spherical groove is formed in the outer wall of the lower portion of the first ball lock bowl and corresponds to the third spherical groove close to the bottom of the sleeve;
the second spring is sleeved on the second ball lock bowl; one end of the second spring is contacted with the bottom end of the sleeve, and the other end of the second spring is contacted with the top end of the step pair in the first step group;
a pin shaft is arranged at the lower part of the long sleeve leg along the radial direction of the sleeve, and a cotter pin is arranged at one end of the pin shaft; a threaded hole is formed in the middle of the pin shaft, an unlocking screw is arranged in the threaded hole, and one end of the unlocking screw abuts against the bottom end of the hollow pipe;
and a passive limiting steel wire rope is connected to the pin shaft or the unlocking screw, one end of the limiting steel wire rope is connected with the pin shaft or the unlocking screw, and the other end of the limiting steel wire rope is connected with the service arm or the fixing bracket.
In the above connector, the ground air channel plate is further provided with a state detection element for detecting whether the valve is separated from the ground air channel plate.
According to the above embodiments of the present application, at least the following advantages are obtained: the power supply connector can provide two independent unlocking modes of active falling and passive pulling, and mutual redundant backup, so that the falling reliability and the intrinsic safety of the power supply connector are improved; the connector for the gas supply can be automatically unlocked and fall off, and the requirement of zero-second falling is met; the air supply connector has the advantages of compact structure, simplicity in use and light weight, and is suitable for multi-path air supply.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the scope of the invention, as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of the specification of the application, illustrate embodiments of the application and together with the description, serve to explain the principles of the application.
Fig. 1 is an assembly structural diagram of an air supply connector according to an embodiment of the present application.
Fig. 2 is a schematic overall structure diagram of a first ball lock in a gas supply connector according to an embodiment of the present application.
Figure 3 is a cross-sectional view of a first ball lock in an air connector according to an embodiment of the present application.
Fig. 4 is a schematic overall structure diagram of a second ball lock in a gas supply connector according to an embodiment of the present application.
Figure 5 is a cross-sectional view of a second ball lock in an air connector according to an embodiment of the present application.
Figure 6 is a cross-sectional view of a second ball-lock bowl in an air connector provided in accordance with an embodiment of the present application.
Description of reference numerals:
1. a shutter; 11. a gas circuit plug;
2. a first ball lock;
21. a first ball lock bowl; 211. a circular hole; 212. a bell mouth; 213. fourth spherical groove
22. A piston; 221. mounting a groove; 222. a guide post; 223. a ball socket; 224. a first spherical groove;
23. a spring seat; 24. a first spring; 25. a first steel ball; 26. a cushion pad; 27. a first seal ring; 28. a second seal ring;
3. a ground gas circuit board; 31. a gas path socket; 32. a state detection element;
4. a second ball lock;
41. a second ball lock bowl; 411. a hollow tube; 412. a first step group; 413. a second step group; 414. a first arcuate wall; 415. screw holes; 416. a second arcuate wall; 417. a screw; 418. a limiting arc plate;
42. a second ball lock sleeve; 421. a sleeve; 4211. a third spherical groove; 422. a U-shaped groove; 423. short sleeve feet; 424. long feet are sleeved;
43. a second steel ball; 44. a second spring; 45. a pin shaft; 46. a cotter pin; 47. unlocking the screw; 48. a filler neck; 49. and limiting the steel wire rope.
Detailed Description
For the purpose of promoting a clear understanding of the objects, aspects and advantages of the embodiments of the present application, reference will now be made to the accompanying drawings and detailed description, wherein like reference numerals refer to like elements throughout.
The illustrative embodiments and descriptions of the present application are provided to explain the present application and not to limit the present application. Additionally, the same or similar numbered elements/components used in the drawings and the embodiments are used to represent the same or similar parts.
As used herein, "first," "second," …, etc., are not specifically intended to mean in a sequential or chronological order, nor are they intended to limit the application, but merely to distinguish between elements or operations described in the same technical language.
With respect to directional terminology used herein, for example: up, down, left, right, front or rear, etc., are simply directions with reference to the drawings. Accordingly, the directional terminology used is intended to be illustrative and is not intended to be limiting of the present teachings.
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 described items.
References to "plurality" herein include "two" and "more than two"; reference to "multiple sets" herein includes "two sets" and "more than two sets".
Certain words used to describe the present application are discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the present application.
Fig. 1 is an assembly structural diagram of an air supply connector according to an embodiment of the present application.
As shown in fig. 1, the air supply connector provided by the embodiment of the present application includes a shutter 1, a first ball lock 2, a floor air plate 3, and a second ball lock 4. The valve 1 is provided with a first ball lock 2. The ground air channel plate 3 is provided with a second ball lock 4, and the second ball lock 4 and the ground air channel plate 3 are connected into a whole to form a connector body. The connector body is connected and locked with the valve 1 through the first ball lock 2.
A plurality of air path plugs 11 are arranged on the valve 1 along the circumferential direction of the valve, corresponding air path sockets 31 are arranged on the ground air path plate 3, the air path plugs 11 are matched with the air path sockets 31 for use and are radially sealed through O-shaped rings, and each pair of air path plugs 11 and the air path sockets 31 form an air supply path channel.
The first ball lock 2 is separated from the connector body and the valve 1 in an active unlocking mode, or the connector body is separated from the valve 1 in a passive unlocking mode. The active unlocking mode and the passive unlocking mode are independent from each other and are redundant backup for each other.
In a specific embodiment, a first mounting hole is formed at the center of the shutter 1, and the first ball lock 2 is mounted in the first mounting hole.
Fig. 2 is a schematic overall structure diagram of a first ball lock in a gas supply connector according to an embodiment of the present application. Figure 3 is a cross-sectional view of a first ball lock in an air connector according to an embodiment of the present application.
Specifically, as shown in fig. 2 and 3, the first ball lock 2 includes a first ball lock bowl 21, a piston 22, a spring seat 23, a first spring 24, and a first steel ball 25.
The first ball lock bowl 21 is provided with a piston 22, a mounting groove 221 is formed on the top surface of the piston 22 from the top to the bottom of the piston 22, and a guide column 222 is arranged inside the mounting groove 221. The depth of the mounting groove 221 is equal to the height of the guide post 222, and the depth of the mounting groove 221 is smaller than the height of the piston 22.
The top of the first ball lock bowl 21 is provided with a spring seat 23. Specifically, the spring seat 23 may be mounted on the top of the first ball lock bowl 21 in a detachable connection manner such as a screw thread, a pin, or the like, or in an unremovable manner such as an interference fit.
A first spring 24 is disposed between the spring seat 23 and the piston 22, the first spring 24 is fitted over the guide post 222, one end of which is disposed in the mounting groove 221, and the other end of which is in contact with the spring seat 23. The first spring 24 is pre-compressed by a predetermined amount to provide a predetermined initial pressure to the piston 22 when installed in place.
A ball socket 223 is provided on the bottom surface of piston 22 so as to project from the bottom of piston 22 toward the top of piston 22. The ball socket 223 is matched with the top end of the tool ejector rod and plays a guiding role in the tool ejector rod, so that the first ball lock 2 is installed in the valve 1 by the tool ejector rod.
The side wall of the upper portion of the piston 22 is in close clearance fit with the inner wall of the first ball lock bowl 21 so that the piston 22 moves axially guided by the inner wall of the first ball lock bowl 21. A first spherical groove 224 is provided in the side wall of the lower portion of the piston 22. The radius of curvature of the first spherical groove 224 near the top of the piston 22 is smaller than the radius of curvature of the first spherical groove 224 near the bottom of the piston 22.
A first taper hole is formed on the side wall of the first ball lock bowl 21, and the first steel ball 25 is arranged at the first taper hole. A second spherical groove is formed on the inner wall of the shutter 1 at the first mounting hole, corresponding to the first spherical groove 224 near the top of the piston 22.
Under the action of the pre-compression lifting force provided by the first spring 24, one end of the first steel ball 25 is in contact with the first spherical groove 224, and the other end of the first steel ball 25 is in contact with the second spherical groove, and finally the first steel ball 25 is compressed between the first spherical groove 224 and the second spherical groove close to the top of the piston 22, so that the first ball lock 2 is connected and locked with the valve 1.
As shown in fig. 3, a cushion pad 26 is further disposed on the outer side of the first spring 24 and on the bottom surface of the spring seat 23, and the cushion pad 26 is used for buffering when a pneumatic active unlocking mode is adopted, so as to prevent the occurrence of a situation that the piston 22 or the spring seat 23 is damaged due to direct contact between the piston 22 and the spring seat 23 when compressed gas is introduced into a gas supply channel formed after the second ball lock 4 and the first ball lock 2 are butted.
Near the bottom of the piston 22, a first sealing ring 27 is disposed on the outer side of the piston 22, and the first sealing ring 27 is used for initial sealing, so that the air pressure in the air supply channel formed after the second ball lock 4 and the first ball lock 2 are butted rises.
And a second sealing ring 28 is arranged at the outer side of the first ball lock bowl 21 near the bottom of the first ball lock bowl 21, and the second sealing ring 28 is used for sealing an air supply channel formed after the second ball lock 4 is butted with the first ball lock 2.
On being located the lateral wall of first ball lock bowl 21, be provided with a plurality of round holes 211 along the circumference interval of first ball lock bowl 21 below first taper hole, round hole 211 is used for discharging the compressed gas after first ball lock 2 and the initiative unblock of valve 1.
The bottom of the first ball lock bowl 21 is provided with a bell 212. the bell 212 is provided to reduce the resistance to gas flow.
In a specific embodiment, a second mounting hole is formed at the center of the ground air channel plate 3, and the second ball lock 4 is fixedly mounted in the second mounting hole.
Fig. 4 is a schematic overall structure diagram of a second ball lock in a gas supply connector according to an embodiment of the present application. Figure 5 is a cross-sectional view of a second ball lock in an air connector according to an embodiment of the present application. Figure 6 is a cross-sectional view of a second ball-lock bowl in an air connector provided in accordance with an embodiment of the present application.
Specifically, as shown in fig. 4 and 5, the second ball lock 4 includes a second ball lock bowl 41, a second ball lock sleeve 42, a second steel ball 43, a second spring 44, a pin 45, an unlocking screw 47, a filler neck 48, and a limit wire 49.
As shown in fig. 6, the second ball lock bowl 41 includes a hollow tube 411 with a closed bottom end, a first step set 412, and a second step set 413. The first step group 412 and the second step group 413 are both disposed around the outer wall of the hollow tube 411 and are disposed along the radial direction of the hollow tube 411 away from the hollow tube 411.
The first step group 412 includes two step pairs symmetrically disposed about a central axis of the hollow tube 411, two steps of each step pair are connected by a first arc-shaped wall 414, and a screw hole 415 is disposed in each step along a radial direction of the hollow tube 411.
The second step group 413 is correspondingly disposed below the first step group 412 in the axial direction of the hollow pipe 411. The second step group 413 includes two symmetrically arranged step pairs, two steps in each step pair are connected by a second arc-shaped wall 416, and a screw hole 415 is arranged in each step along the radial direction of the hollow tube 411.
And after the screw 417 sequentially passes through the screw hole 415 on the ground air circuit board 3 and the screw hole 415 on the second ball lock bowl 41, the second ball lock 4 is fixedly connected with the ground air circuit board 3 together to form a connector body.
A limiting arc plate 418 is arranged between the step pair in the first step group 412 and the corresponding step pair in the second step group 413.
As shown in fig. 4 and 5, the second ball-lock sleeve 42 includes a sleeve 421, and a plurality of U-shaped grooves 422 are uniformly spaced from the bottom end of the sleeve 421 on the sidewall of the upper portion of the sleeve 421 along the circumferential direction of the sleeve 421, and the U-shaped grooves 422 are respectively short legs 423 and long legs 424 on two sides of the circumferential direction of the sleeve 421.
Specifically, four U-shaped grooves 422 are uniformly spaced from the sidewall of the upper portion of the sleeve 421 to the bottom end of the sleeve 421 along the circumferential direction of the sleeve 421, so that the second ball-lock sleeve 42 has two long legs 424 and two short legs 423. Wherein, the two long socket feet 424 and the two short socket feet 423 are symmetrical about the central axis of the sleeve 421.
The short sleeve feet 423 are attached to the first arc-shaped wall 414, and the first arc-shaped wall 414 guides the movement of the second ball lock sleeve 42 along the axial direction of the second ball lock bowl 41; the short sleeve feet 423 are located above the limiting arc plate 418, and the short sleeve feet 423 are matched with the limiting arc plate 418 to limit axial movement of the second ball lock sleeve 42 relative to the second ball lock bowl 41.
The thickness of the second curved wall 416 is greater than the thickness of the first curved wall 414, and in particular, the thickness of the second curved wall 416 is equal to the sum of the thickness of the first curved wall 414 and the thickness of the short leg 423.
The inner wall of the upper part of the sleeve 421 is provided with a third spherical groove 4211. The radius of curvature of the third spherical groove 4211 near the top of the sleeve 421 is greater than the radius of curvature of the third spherical groove 4211 near the bottom of the sleeve 421.
The second ball lock sleeve 42 is sleeved on the second ball lock bowl 41, wherein the inner wall of the upper part of the sleeve 421 below the third ball surface groove 4211 is in contact with the hollow tube 411 in the second ball lock bowl 41. The side wall of the upper part of the hollow tube 411 is provided with a second taper hole. A second steel ball 43 is provided at the second taper hole. Corresponding to the third spherical groove 4211 near the bottom of the sleeve 421, a fourth spherical groove 213 is formed on the outer wall of the lower portion of the first ball lock bowl 21.
The second spring 44 is sleeved on the hollow tube 411 and is located in the space between the long socket 424 and the short socket 423 and the hollow tube 411. One end of the second spring 44 contacts the bottom end of the sleeve 421, and the other end thereof contacts the top end of the step pair in the first step group 412.
After the second steel ball 43 is installed, the second spring 44 is in a pre-compressed state, providing an upward compressive force on the second ball sleeve 42 along its axis. Under the action of the pre-compression pressure provided by the second spring 44, one end of the second steel ball 43 contacts with the third spherical groove 4211, the other end of the second steel ball 43 contacts with the fourth spherical groove 213, and finally the second steel ball 43 is compressed between the third spherical groove 4211 and the fourth spherical groove 213, so as to realize the connection locking of the connector body and the first ball lock 2.
In addition, the short sleeve leg 423 cooperates with the limit arc plate 418 to limit the distance that the second ball lock sleeve 42 moves relative to the second ball lock bowl 41 in the axial direction, so as to prevent the second steel ball 43 from falling or the second spring 44 from being crushed during passive unlocking.
As shown in fig. 3, a pin 45 is installed at a lower portion of the long leg 424 along a radial direction of the sleeve 421, and a cotter pin 46 is provided at one end of the pin 45 to connect the pin 45 with the second ball lock sleeve 42. A threaded hole is formed in the middle of the pin shaft 45, an unlocking screw 47 is arranged in the threaded hole, and one end of the unlocking screw 47 abuts against the bottom end of the hollow pipe 411.
A filler neck 48 is connected to a side wall of a lower portion of the hollow tube 411, and compressed gas can be introduced into the hollow tube 411 through the filler neck 48.
A passive limiting steel wire rope 49 is connected to the pin shaft 45 or the unlocking screw 47. One end of a limiting steel wire rope 49 is connected with the pin shaft 45 or the unlocking screw 47, and the other end of the limiting steel wire rope is connected with a service arm or a fixed bracket. After the spacecraft takes off, the length of the limiting steel wire rope 49 is limited and drives the second ball lock sleeve 42 to move downwards, and then unlocking between the connector body and the first ball lock 2 and the valve 1 can be achieved.
When the connector body is butted with the first ball lock 2 and the valve 1, the specific process is as follows:
firstly, a first ball lock 2 is installed in a valve 1, and the specific process is as follows:
the ejector rod is inserted into the first ball lock bowl 21 until the top end of the ejector rod reaches the ball socket 223 at the bottom of the piston 22, and the ejector rod is pushed towards the spring seat 23, so that the first steel ball 25 retracts into the first ball lock bowl 21.
The first ball lock 2 is placed in the first mounting hole of the shutter 1, and the carrier rod is withdrawn from the first ball lock bowl 21.
Under the action of the elastic force of the first spring 24, the piston 22 presses the first steel ball 25 between the first spherical groove 224 and the second spherical groove through the first taper hole, so as to complete the connection and locking between the first ball lock 2 and the shutter 1.
Secondly, connect connector body and first ball lock 2, its specific process is:
the unlocking screw 47 is screwed in to make the pin 45 move the second ball lock sleeve 42 downward relative to the second ball lock bowl 41, so that the second steel ball 43 retracts into the third spherical groove 4211 near the top of the sleeve 421.
The second ball lock 4 is butted with the first ball lock 2, and after the second ball lock is installed in place, the unlocking screw 47 is withdrawn.
Under the action of the elastic force of the second spring 44, the second ball lock sleeve 42 presses the second steel ball 43 between the third spherical groove 4211 and the fourth spherical groove 213 through the second taper hole, so as to complete the connection and locking between the connector body and the first ball lock 2.
The air supply connector provided by the application can provide two mutually independent and redundant backup unlocking modes of pneumatic active unlocking and limiting steel wire rope 49 passive unlocking, so that the high reliability of zero-second falling of the air supply connector is improved.
After the second ball lock bowl 41 and the first ball lock bowl 21 are butted in place, the inner cavity of the second ball lock bowl 41 and the first ball lock bowl 21 are sealed through the second sealing ring 28, and an unlocking gas supply channel is formed. Compressed gas is introduced into the gas supply channel from the filler neck 48 of the second ball lock 4, and the compressed gas can make the piston 22 move upwards against the pressing force of the first spring 24, so that the first steel ball 25 retracts into the first ball lock bowl 21, and the first ball lock 2 and the valve 1 are actively unlocked. After unlocking, compressed gas enters the annular cavity between the valve 1 and the connector body through the plurality of circular holes 211 distributed on the first ball lock bowl 21 in the circumferential direction, and further pushes the connector body and the valve 1 to be separated from each other.
When the first ball lock 2 is clamped on the valve 1 and cannot be actively unlocked, after the aerospace carrier takes off, the limiting steel wire rope 49 is tightened under the limitation of length, the second ball lock sleeve 42 is driven to move downwards along the second ball lock bowl 41, the second ball lock 4 is separated from the first ball lock 2, and then the connector body is passively unlocked and separated from the first ball lock 2 and the valve 1. The space vehicle mentioned in the embodiments above may in particular be a rocket.
In a specific embodiment, the ground air path plate 3 is further provided with a status detection element 32, and the status detection element 32 is used for detecting whether the valve 1 is separated from the ground air path plate 3. The state detection element 32 is connected with an external controller, the state detection element 32 sends the acquired state signal to the external controller, and the external controller judges whether the valve 1 is separated from the ground air circuit board 3. Specifically, the state detection element 32 may employ a push switch, a proximity switch, or the like.
The air supply connector has the advantages of compact structure, simplicity in use and light weight, and is suitable for multi-path air supply. The connector for the gas supply can be automatically unlocked and fall off, and the requirement of zero-second falling is met;
the power supply connector can provide two mutually independent unlocking modes of active falling and passive pulling, and mutual redundancy backup, and further improves the falling reliability and the intrinsic safety of the power supply connector.
The air supply connector can be axially and radially mounted on a space carrier, and is good in adaptability.
The foregoing is merely an illustrative embodiment of the present application, and any equivalent changes and modifications made by those skilled in the art without departing from the spirit and principles of the present application shall fall within the protection scope of the present application.
Claims (10)
1. A gas supply connector comprising a valve, a first ball lock, a ground gas panel and a second ball lock; the first ball lock is arranged in the valve; the second ball lock is arranged in the ground gas circuit board, and the second ball lock and the ground gas circuit board are connected into a whole to form a connector body; the connector body is connected and locked with the valve through the first ball lock;
the valve is provided with an air channel plug along the circumferential direction, the ground air channel plate is provided with a corresponding air channel socket, and the air channel plug and the air channel socket are matched to form an air supply channel;
the first ball lock realizes the separation between the first ball lock and the connector body and the valve in an active unlocking mode, or the connector body realizes the separation between the connector body and the valve in a passive unlocking mode; the active unlocking mode and the passive unlocking mode are independent and redundant backup.
2. The air supply connector according to claim 1, wherein a first mounting hole is opened at a center of the shutter, and the first ball lock is mounted in the first mounting hole.
3. The air supply connector of claim 2 wherein the first ball lock includes a first ball lock bowl having a piston disposed therein, a side wall of an upper portion of the piston engaging an inner wall of the first ball lock bowl to facilitate axial movement of the piston guided by the inner wall of the first ball lock bowl; a first spherical groove is formed in the side wall of the lower portion of the piston;
a first taper hole is formed in the side wall of the first ball lock bowl, and a first steel ball is arranged at the first taper hole;
a second spherical groove is formed in the inner wall of the valve at the first mounting hole;
when the piston uses the inner wall of first ball lock bowl is the direction and makes axial motion, first steel ball can through compressed tightly first sphere slot with between the second sphere slot, in order to realize the locking of being connected of first ball lock and valve, perhaps, first steel ball can retract in the first ball lock bowl, in order to realize the separation of first ball lock and valve.
4. The air supply connector of claim 3, wherein the first spherical groove is provided on a side wall of the piston lower portion near the piston top and on a side wall of the piston lower portion near the piston bottom, wherein a radius of curvature of the first spherical groove near the piston top is smaller than a radius of curvature of the first spherical groove near the piston bottom.
5. The air supply connector of claim 3, wherein the first ball lock further comprises a spring seat and a first spring, the spring seat being disposed at a top of the first ball lock bowl; the first spring is disposed in a space between the spring seat and the piston;
the top surface of the piston is provided with an installation groove from the top to the bottom of the piston, and a guide column is arranged in the installation groove; the first spring is sleeved on the guide post, one end of the first spring is arranged in the installation groove, and the other end of the first spring is in contact with the spring seat.
6. The air supply connector according to claim 3, wherein a ball socket is provided on the bottom surface of the piston in a protruding manner from the bottom of the piston toward the top of the piston; the ball socket is matched with the top end of the tool ejector rod, and plays a role in guiding the tool ejector rod.
7. The air supply connector of claim 1, wherein a second mounting hole is formed in the center of the ground air plate, and the second ball lock is fixedly mounted in the second mounting hole.
8. The air supply connector of claim 7, wherein the second ball lock includes a second ball lock bowl and a filler neck, the second ball lock bowl including a hollow tube that interfaces with the first ball lock bowl; the filler neck is arranged on the side wall of the lower part of the hollow pipe, and compressed gas is introduced into the second ball lock bowl through the filler neck.
9. The air supply connector of claim 8, wherein the second ball lock bowl further comprises a first step set and a second step set, the first step set and the second step set being disposed around an outer wall of the hollow tube and being disposed radially away from the hollow tube; the first step group comprises two step pairs which are symmetrically arranged by taking the central axis of the hollow pipe as a symmetry axis, and two steps in each step pair are connected through a first arc-shaped wall;
the second step group is correspondingly arranged below the first step group along the axial direction of the hollow pipe; the second step group comprises two symmetrically arranged step pairs, and two steps in each step pair are connected through a second arc-shaped wall; and a limiting arc plate is arranged between the step pair in the first step group and the corresponding step pair in the second step group.
10. The air supply connector of claim 9, wherein the second ball lock further comprises a second ball lock sleeve, a second steel ball, and a second spring;
the second ball lock sleeve comprises a sleeve, and U-shaped grooves are uniformly arranged on the side wall of the upper part of the sleeve to the bottom end of the sleeve at intervals along the circumferential direction of the sleeve, and short sleeve feet and long sleeve feet are respectively arranged on two sides of each U-shaped groove in the circumferential direction of the sleeve;
a third spherical groove is formed in the inner wall of the upper part of the sleeve; the radius of curvature of the third spherical groove near the top of the sleeve is greater than the radius of curvature of the third spherical groove near the bottom of the sleeve;
the inner wall of the upper part of the sleeve below the third spherical groove is in contact with the hollow pipe;
a second taper hole is formed in the side wall of the upper portion of the second ball lock bowl, and the second steel ball is arranged at the second taper hole;
a fourth spherical groove is formed in the outer wall of the lower portion of the first ball lock bowl and corresponds to the third spherical groove close to the bottom of the sleeve;
the second spring is sleeved on the second ball lock bowl; one end of the second spring is contacted with the bottom end of the sleeve, and the other end of the second spring is contacted with the top end of the step pair in the first step group;
a pin shaft is arranged at the lower part of the long sleeve leg along the radial direction of the sleeve, and a cotter pin is arranged at one end of the pin shaft; a threaded hole is formed in the middle of the pin shaft, an unlocking screw is arranged in the threaded hole, and one end of the unlocking screw abuts against the bottom end of the hollow pipe;
and a passive limiting steel wire rope is connected to the pin shaft or the unlocking screw, one end of the limiting steel wire rope is connected with the pin shaft or the unlocking screw, and the other end of the limiting steel wire rope is connected with the service arm or the fixing bracket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010907368.1A CN111765315B (en) | 2020-09-02 | 2020-09-02 | Air supply connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010907368.1A CN111765315B (en) | 2020-09-02 | 2020-09-02 | Air supply connector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111765315A true CN111765315A (en) | 2020-10-13 |
| CN111765315B CN111765315B (en) | 2020-12-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010907368.1A Active CN111765315B (en) | 2020-09-02 | 2020-09-02 | Air supply connector |
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| Country | Link |
|---|---|
| CN (1) | CN111765315B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116315842A (en) * | 2023-05-16 | 2023-06-23 | 南京盟瑞自动化有限公司 | Connector |
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| CN116315842B (en) * | 2023-05-16 | 2023-07-21 | 南京盟瑞自动化有限公司 | Connector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111765315B (en) | 2020-12-11 |
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