CN116873200A - Self-unlocking connecting device of air drop system - Google Patents
Self-unlocking connecting device of air drop system Download PDFInfo
- Publication number
- CN116873200A CN116873200A CN202311089101.6A CN202311089101A CN116873200A CN 116873200 A CN116873200 A CN 116873200A CN 202311089101 A CN202311089101 A CN 202311089101A CN 116873200 A CN116873200 A CN 116873200A
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- Prior art keywords
- unlocking pin
- pin
- load
- self
- locking
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- 230000005484 gravity Effects 0.000 claims abstract description 23
- 230000000946 synaptic effect Effects 0.000 claims abstract description 8
- 230000005540 biological transmission Effects 0.000 claims description 71
- 230000033001 locomotion Effects 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 12
- 210000000225 synapse Anatomy 0.000 claims description 9
- 238000001125 extrusion Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 239000000470 constituent Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D1/00—Dropping, ejecting, releasing, or receiving articles, liquids, or the like, in flight
- B64D1/02—Dropping, ejecting, or releasing articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D17/00—Parachutes
- B64D17/22—Load suspension
- B64D17/38—Releasable fastening devices between parachute and load or pack
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/40—Weight reduction
Abstract
The invention belongs to the field of air-drop equipment for air transportation, and particularly relates to a self-unlocking connecting device of an air-drop system. Comprises a connector and a connecting seat; the connecting seat comprises a locking trigger pin, a load unlocking pin and a self-unlocking pin; the connector comprises an oblique angle clamping groove and a locking synaptic groove; when the connector is inserted into the connecting seat, the locking trigger pin is jacked up, the load is released, the locking pin is released, the self-unlocking pin is compressed, and the oblique angle clamping groove and the locking synaptic groove of the connector form a locking connection relation; when the gravity load pulls the connector downwards, the compression load unlocks the lock pin and enables the lock pin to be in an unlocking and releasing state; when the gravity load is not acted, the self-unlocking pin is unlocked, and the connecting device is disconnected. The invention can solve the problem of low dismounting efficiency of the connecting device between the air drop system and the parachute ropes and ensure reliable connection in the landing stage.
Description
Technical Field
The invention belongs to the field of air-drop equipment for air transportation, and particularly relates to a self-unlocking connecting device of an air-drop system.
Background
In the process of delivering military materials in air transportation, reliable connection between a parachute rope and an air-drop system is an important condition for ensuring success of air-drop, and connection modes such as bolts, buckles and the like are mainly used at present. The bolts and the buckles are connected at the armed preparation stage of the airdrop equipment and after landing, the airdrop equipment needs to be fixed and released by a human tool, the efficiency is low, the assembly and disassembly process is complex, and the action efficiency of the army rapid armed airdrop operation is greatly influenced.
Patent CN114104341a discloses a passive recovery locking device, which can be quickly connected when hoisting equipment, but cannot be automatically unlocked after unloading, and still needs manual disassembly, so that the efficiency is low; patent CN110803285a discloses a landing disengaging lock and an automatic unlocking method, which can be stably connected in the air drop process and automatically unlock after landing, but the device has the problem of structural failure in stable connection, and cannot be reused for the second time.
Disclosure of Invention
The invention aims to provide a self-unlocking connecting device for an air-drop system, which solves the problem that a connecting device between the air-drop system and a parachute rope is low in dismounting efficiency.
The technical solution for realizing the purpose of the invention is as follows: the self-unlocking connecting device of the air drop system comprises a connecting seat which is a hollow U-shaped shell, a connector which is mutually matched with the connecting seat, a parachute rope which is connected with the upper part of the connecting seat, and an air drop system which is connected with the bottom of the connecting seat;
the connecting seat is internally provided with a locking trigger pin, a locking trigger pin spring, a transmission rod, a self-unlocking pin control plate, a load unlocking pin locker, a load unlocking pin spring, a load unlocking pin, a self-unlocking pin spring and a self-unlocking pin;
the locking trigger pin spring, the load unlocking pin spring and the self-unlocking pin spring are all in a compressed state, the locking trigger pin moves up and down under the action of the locking trigger pin spring, so that the load unlocking pin locker is driven to move up and down, locking or releasing of the load unlocking pin is realized, the up and down movement of the locking trigger pin is converted into left and right reciprocating movement of the self-unlocking pin control plates on two sides through rotation of the transmission rods on two sides, when gravity load acts, the load unlocking pin is unlocked, the self-unlocking pin is kept locked, and the air drop system is in a stable descending state; when the air drop system falls to the ground, gravity load no longer acts on the connector, the connector and the connecting seat are in a free state, the self-unlocking pin is unlocked, and the whole connecting device is in a complete unlocking state.
Further, the connecting seat comprises an outer transverse plate, an inner transverse plate, an outer vertical plate and an inner vertical plate;
the load unlocking pin locker sliding grooves and the locking triggering pin sliding grooves are formed in the direction of the transverse central line of the inner transverse plate, the locking triggering pin sliding grooves are positioned at the center of the inner transverse plate and are square, the load unlocking pin locker sliding grooves are symmetrically distributed on two sides of the locking triggering pin sliding grooves along the direction of the central line of the inner transverse plate and are rectangular, the width of the load unlocking pin locker sliding grooves is narrower than that of the locking triggering pin sliding grooves, and the load unlocking pin locker sliding grooves extend downwards to the inner vertical plate;
the inner vertical plate is provided with a load unlocking pin sliding hole and a self-unlocking pin sliding hole in the longitudinal center line direction, and the size of the load unlocking pin sliding hole is larger than that of the self-unlocking pin sliding hole and is respectively larger than that of the load unlocking pin and the self-unlocking pin; the height of the near center side hole of the self-unlocking pin sliding hole is larger than that of the far center side;
the outer vertical plate is provided with a control panel telescopic hole matched with the load unlocking pin and the self-unlocking pin.
Furthermore, the connector is in a convex shape, the upper slender section is matched with the groove between the inner vertical plates of the connecting seat, and the size of the upper slender section is smaller than that of the groove between the inner vertical plates;
the connector is provided with a connector locking synaptic groove and a connector oblique angle clamping groove which are symmetrically arranged;
the near center end of the load unlocking pin is provided with a locking feature load unlocking pin locking protrusion, and the locking feature load unlocking pin is in embedded fit with a connector locking protrusion groove on the connector during locking, so that the whole device is completely locked; when gravity load acts, the load unlocking pin is compressed and unlocked and locked by the load unlocking pin locker, and at the moment, the connector bevel clamping groove on the connector and the self unlocking pin bevel are mutually embedded and connected, so that a reliable connection state of preliminary unlocking is maintained;
the load unlocking pin is provided with a load unlocking pin locking groove which is matched with the load unlocking pin locker to lock and release.
Further, the device also comprises a transmission rod rotating support head, wherein the transmission rod rotating support head is positioned at the longitudinal center line of the inner vertical plate and is centrally and symmetrically arranged at the bottom of the side end of the sliding groove of the load unlocking pin locker; the transmission rod rotating support head is higher than the inner transverse plate, the head of the top end of the transmission rod rotating support head is a round roller, and the round roller is in embedded fit with the transmission rod rotating support head sliding groove of the transmission rod so as to enable the transmission rod to rotate along the transmission rod rotating support head.
Further, the locking trigger pin is positioned at the transverse and longitudinal center points between the outer transverse plate and the inner transverse plate, the locking trigger pin slides up and down along the locking trigger pin sliding groove, two ends of the locking trigger pin spring are respectively fixed at the center points of the lower surface of the outer transverse plate and the top end of the locking trigger pin, and the locking trigger pin limiting baffle is fixed at the middle part of the locking trigger pin, has a width larger than that of the locking trigger pin sliding groove and is used for preventing the locking trigger pin from penetrating through the locking trigger pin sliding groove; the opposite sides of the locking trigger pin are respectively provided with a transmission rod rotating shaft.
Further, a transmission rod rotating hole matched with the transmission rod rotating shaft is formed in the near center end of the transmission rod, and the up-and-down motion of the locking trigger pin is transmitted to the transmission rod; the middle bottom of the transmission rod is provided with a transmission rod rotating support head sliding groove which is in embedded fit with the transmission rod rotating support head to support the transmission rod to rotate; the transmission rod sliding head is arranged at the far center end of the transmission rod and is in a round roller shape, and the transmission rod sliding head is embedded in the transmission rod sliding groove on the inner surface of the self-unlocking pin control plate to convert the rotation motion of the transmission rod into the reciprocating motion of the self-unlocking pin control plate.
Further, the load unlocking pin locking device is in a right-angle shape, horizontal ends are symmetrically fixed on two sides of the locking trigger pin and are parallel to the inner transverse plate, and the load unlocking pin locking device penetrates through the sliding groove of the load unlocking pin locking device to reciprocate up and down along with the locking trigger pin; the top of the vertical end is fixedly connected with the outer side of the horizontal end and moves up and down along the longitudinal direction of the inner vertical plate along with the horizontal end; the bottom of the vertical end is in embedded fit with the locking groove of the load unlocking pin, and when the locking trigger pin moves upwards and downwards, the load unlocking pin locker is respectively separated from and embedded into the locking groove of the load unlocking pin.
Further, the self-unlocking pin control plates are symmetrically arranged between the outer vertical plate and the inner vertical plate along the transverse central line; the transmission rod sliding groove is fixedly connected to the center of the top end of the self-unlocking pin control plate, and converts the rotation motion of the transmission rod into the reciprocating motion of the self-unlocking pin control plate; an upper control board telescopic shaft and a lower control board telescopic shaft are fixed on the back of the self-unlocking pin control board, two control board telescopic holes are formed in the corresponding positions of the outer vertical boards, the control board telescopic grooves are externally connected with the control board telescopic holes, the self-unlocking pin control board performs left-right reciprocating motion along the control board telescopic grooves through the control board telescopic shafts, and the self-unlocking pin is compressed or released; the middle part of the self-unlocking pin control plate is provided with a load unlocking pin sliding through hole for the load unlocking pin spring to slide through.
Further, a spring base is respectively fixed at the end part of the far center side of the load unlocking pin and the outer vertical plate and is used for fixing a load unlocking pin spring;
the spring base fixing plate and the inner vertical plate of the self-unlocking lock pin are respectively fixed with two spring bases for fixing the self-unlocking pin springs arranged on two sides of the self-unlocking pin.
A method for carrying out air drop on an air drop system by adopting the connecting device comprises the following steps:
step (1): the connector and the end part of the connecting seat are respectively fixedly connected with a connecting buckle which is respectively used for connecting with the air drop system and the parachute rope;
step (2): in a complete unlocking state, the locking trigger pin moves downwards under the combined pushing of the locking trigger pin spring and the self-unlocking pin spring to drive the load unlocking pin locker to move downwards together until the locking trigger pin limiting baffle plate is clamped on the surface of the inner transverse plate; at the moment, the self-unlocking pin is completely contracted in the self-unlocking pin sliding hole under the elastic release action of the self-unlocking pin spring, the load unlocking pin is also completely contracted in the load unlocking pin sliding hole due to the extrusion action when the preamble connector is pulled out, and meanwhile, the load unlocking pin locker is embedded and matched with the load unlocking pin locking groove to be locked, and at the moment, the whole connecting device is in a complete unlocking state;
step (3): when the connector is inserted into the connecting seat, the connector jacks up the locking trigger pin, the locking trigger pin moves upwards, and the load unlocking pin locker and the self-unlocking pin control plate are driven to move upwards and to two sides respectively; when the connector is completely inserted into the connecting seat, the load unlocking pin locker just completely breaks away from the load unlocking pin locking groove, the load unlocking pin is completely released, and the connector locking synaptic groove is in embedded fit with the load unlocking pin locking synapse; in the process, the self-unlocking pin firstly props against the surface of the inner vertical plate under the pushing of the self-unlocking pin control plate and cannot advance, then is embedded into the connector bevel clamping groove when the connector bevel clamping groove reaches the corresponding position, and the whole connecting device is in a complete locking state;
step (4): when the air drop system is in a stable descending state, under the action of gravity load of the air drop system, the connector moves downwards, the load unlocking pin is extruded into the load unlocking pin sliding hole, at the moment, the locking trigger pin moves downwards under the combined action of the locking trigger pin spring and the self-unlocking pin spring, the load unlocking pin locker is driven to move downwards, and the load unlocking pin locker is embedded into the load unlocking pin locking groove, so that the load unlocking pin is in an unlocking and locking state; at the moment, under the action of gravity load, the connector is mutually embedded and connected with the self-unlocking pin bevel angle through the bulge of the connector bevel angle clamping groove, so that the reliable connection of the whole connecting device in a stable descending stage is ensured, and the connecting device is in a primary unlocking state;
step (5): when the air drop system falls to the ground, gravity load does not act on the connector any more, the connector and the connecting seat are in a free state, no forced acting force exists between the bulge of the oblique angle clamping groove of the connector and the oblique angle of the self-unlocking pin, the self-unlocking pin is completely retracted into the self-unlocking pin sliding hole under the action of the self-unlocking pin spring, and the whole connecting device is in a complete unlocking state;
step (6): and (5) inserting the connector again, and repeating the process until the air drop task is completed, so that the connecting device is completely unlocked.
Compared with the prior art, the invention has the remarkable advantages that:
(1) According to the invention, the smart principle that the self-unlocking lock pin is unlocked only under the action of no load is utilized, the self-unlocking pin is kept locked by utilizing the gravity load of the air drop system in the steady-falling stage of the air drop system, and the self-unlocking pin is automatically unlocked by utilizing the self-unlocking pin spring after the gravity load is not acted in the landing stage, so that the problem of reliable connection of the parachute rope and the air drop system in the steady-falling stage is solved, the problems of complex disassembly and low disassembly efficiency of a connecting device between the parachute rope and the air drop system after landing are solved, and the operational action efficiency of the troops in the air drop operation is improved.
(2) According to the invention, by utilizing the principle that the load unlocking pin is unlocked only under the action of strong load such as gravity load and the like, when the connector is inserted into the connecting seat, the whole connecting device is in a locking state through the locking synapse of the load unlocking pin, so that the problem that the connecting device is disconnected under the action of unexpected weak load is avoided, the load unlocking pin is unlocked only under the action of expected strong load, and the reliability of the whole connecting device is ensured.
(3) The connector and the connecting seat can be produced in batch, are respectively fixed on the air drop system and the parachute rope through the connecting buckle, can be quickly inserted into the device to complete connection without considering the matching relation during the equipment, and avoid the problem of low efficiency of the traditional connection modes such as bolt buckles.
Drawings
Fig. 1 is a schematic view of a locking state of a connecting device.
Fig. 2 is a side view partially enlarged of the locking state of the connecting device.
Fig. 3 is a schematic diagram of a preliminary unlocking state under a strong load.
Fig. 4 is a side view partially enlarged of a preliminary unlock state under a strong load.
Fig. 5 is a schematic diagram of a fully unlocked state after unloading.
Fig. 6 is a side partial enlarged view of a fully unlocked condition after unloading.
FIG. 7 is an enlarged side view of the latch trigger structure; wherein (a) is in a locked state and (b) is in an unlocked state.
FIG. 8 is a schematic diagram of the constituent components; wherein (a) locking trigger pin, (b) transmission rod, (c) load unlocking pin, (d) self-unlocking pin, (e) self-unlocking pin control board.
Fig. 9 is a schematic view of a connector.
Description of the drawings
1-connecting seat, 2-locking trigger pin spring, 3-locking trigger pin, 4-transmission rod, 5-control plate expansion groove, 6-self-unlocking pin control plate, 7-load unlocking pin locker, 8-load unlocking pin spring, 9-load unlocking pin, 10-self-unlocking pin spring, 11-self-unlocking pin, 12-connecting head, 13-connecting buckle, 14-connecting head oblique angle clamping groove, 15-load unlocking pin locking synapse, 16-connecting head locking synapse groove, 17-transmission rod sliding groove, 18-spring base, 19-transmission rod rotating support head, 20-locking trigger pin limit baffle, 21-load unlocking pin locker sliding groove, 22-locking trigger pin sliding groove, 23-transmission rod rotating support head sliding groove, 24-load unlocking pin locking groove, 25-transmission rod rotating hole, 26-transmission rod rotating shaft, 27-transmission rod sliding head, 28-self-unlocking pin oblique angle, 29-self-unlocking pin spring base fixing plate, 30-load pin sliding through hole, 31-outer plate, 32-inner plate, 33-outer plate expansion groove, 35-control plate expansion groove, 35-inner plate expansion groove, 35-outer plate expansion groove, 35-locking pin sliding hole, 35-inner plate expansion groove, and 35-control plate expansion groove.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings.
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1, the self-unlocking connecting device of the air drop system comprises a connector 12 and a connecting seat 1, wherein a locking trigger pin 3, a locking trigger pin spring 2, a transmission rod 4, a self-unlocking pin control plate 6, a self-unlocking pin spring 10, a self-unlocking pin 11, a load unlocking pin locker 7, a load unlocking pin spring 8, a load unlocking pin 9 and a control plate expansion slot 5 are arranged in the connecting seat 1;
as shown in fig. 9, the whole connecting seat 1 is a hollow "n" -shaped shell, and includes features such as an outer cross plate 31, an inner cross plate 32, an outer vertical plate 34, an inner vertical plate 37, a self-unlocking pin sliding hole 35, a load unlocking pin sliding hole 36, a control plate telescopic hole 33, and the like;
as shown in fig. 7 and 9, the inner cross plate 32 is provided with a load unlocking pin locker sliding groove 21 and a locking trigger pin sliding groove 22 in the transverse center line direction; the locking trigger pin sliding groove 22 is positioned at the center of the inner transverse plate 32 and is square, the load unlocking pin locker sliding grooves 21 are symmetrically distributed on two sides of the locking trigger pin sliding groove 22 along the central line direction of the inner transverse plate 32, the width of the load unlocking pin locker sliding groove 21 is smaller than that of the locking trigger pin sliding groove 22, and the load unlocking pin locker sliding groove 21 extends downwards to the inner vertical plate 37;
as shown in fig. 7 and 9, the transmission rod rotating branch 19 is positioned at the longitudinal center line of the inner vertical plate 37 and is centrally and symmetrically arranged at the bottom of the side end of the load unlocking pin locker sliding groove 21; the transmission rod rotating support head 19 is higher than the inner transverse plate 32, the top end head of the transmission rod rotating support head is a round roller which is in embedded fit with the transmission rod rotating support head sliding groove 23 so as to enable the transmission rod 4 to rotate along the transmission rod rotating support head 19;
as shown in fig. 7, 8 and 9, the locking trigger pin 3 is located at the center points of the transverse direction and the longitudinal direction between the outer transverse plate 31 and the inner transverse plate 32, a spring base 18 is respectively fixed at the center points of the top ends of the outer transverse plate 31 and the locking trigger pin 3, and two ends of the locking trigger pin spring 2 are respectively fixed on the two spring bases 18; the locking trigger pin 3 is square, the width of the locking trigger pin 3 is slightly smaller than that of the locking trigger pin sliding groove 22, and the locking trigger pin 3 can slide up and down along the locking trigger pin sliding groove 22; the locking trigger pin limiting baffle 20 is fixed in the middle of the locking trigger pin 3, and has a width larger than that of the locking trigger pin sliding groove 22, so as to prevent the locking trigger pin 3 from passing through the locking trigger pin sliding groove 22;
as shown in fig. 7 and 8, a transmission rod rotating hole 25 is formed in the near center end of the transmission rod 4, a transmission rod rotating shaft 26 is respectively fixed on the side surface of the locking trigger pin 3, and the transmission rod rotating shaft is matched with the transmission rod rotating hole 25 to transmit the up-and-down motion of the locking trigger pin 3 to the transmission rod 4; the middle bottom of the transmission rod 4 is provided with a transmission rod rotating support head sliding groove 23 which is in embedded fit with the transmission rod rotating support head 19 to support the transmission rod 4 to rotate; the transmission rod 4 is provided with a transmission rod sliding head 27 at the far center end and is in a round roller shape, and is in embedded fit with the transmission rod sliding groove 17 to convert the rotation motion of the transmission rod 4 into the reciprocating motion of the self-unlocking pin control plate 6;
as shown in fig. 2, 6 and 7, the load unlocking pin locker 7 is in a right-angle shape, horizontal ends are symmetrically fixed on two sides of the locking trigger pin 3 and parallel to the inner transverse 32 plate, and can pass through the load unlocking pin locker sliding groove 21 to reciprocate up and down along with the locking trigger pin 3; the top of the vertical end is fixedly connected with the outer side of the horizontal end, and moves up and down along the longitudinal direction of the inner vertical plate 37 along with the horizontal end; the bottom of the vertical end is in embedded fit with the locking groove 24 of the load unlocking pin, and when the locking trigger pin 3 moves upwards and downwards, the load unlocking pin locker 7 is respectively separated from and embedded into the locking groove 24 of the load unlocking pin;
as shown in fig. 1, 8, and 9, the self-unlocking pin control plate 6 is symmetrically arranged between the outer riser 34 and the inner riser 37 along the lateral center line; the transmission rod sliding groove 17 is fixedly connected to the center of the top end of the self-unlocking pin control plate 6, and converts the rotation motion of the transmission rod 4 into the reciprocating motion of the self-unlocking pin control plate 6; the back of the self-unlocking pin control plate 6 is fixed with an upper control plate telescopic shaft 38 and a lower control plate telescopic shaft 38, the outer vertical plate 34 is provided with two control plate telescopic holes 33 at corresponding positions, the control plate telescopic grooves 5 are externally connected with the control plate telescopic holes 33, the self-unlocking pin control plate 6 moves left and right along the control plate telescopic grooves 5 back and forth through the control plate telescopic shafts 38, and the self-unlocking pin 11 is compressed or released; the middle part of the self-unlocking pin control plate 6 is provided with a load unlocking pin sliding through hole 30 for the load unlocking pin spring to slide through;
as shown in fig. 8 and 9, a load release pin sliding hole 36 and a self-release pin sliding hole 35 are formed in the longitudinal center line direction of the inner vertical plate 37, and the size of the load release pin sliding hole 36 is larger than that of the self-release pin sliding hole 35 and slightly larger than that of the load release pin 9 and the self-release pin 11; the height of the near center side hole of the self-unlocking pin sliding hole 35 is larger than that of the far center side, so that the self-unlocking pin bevel 28 can be used for stretching and retracting;
as shown in fig. 2 and 6, a spring mount 18 is fixed to the distal center side end of the load unlocking pin 9 and the outer riser 34, respectively, for fixing the load unlocking pin spring; two spring bases 18 are fixed to the self-unlocking pin spring base fixing plate 29 and the inner vertical plate 37, respectively, for fixing the unlocking pin springs;
as shown in fig. 1, 3 and 8, a locking feature load unlocking pin locking protrusion 15 exists at the near center end of the load unlocking pin 9, and is in embedded fit with a connector locking protrusion groove 16 on the connector 12 during locking, so that the whole device is completely locked; the self-unlocking pin 11 is provided with a locking characteristic self-unlocking pin bevel 28 at the near center end, when gravity load acts, the gravity unlocking pin 9 is compressed and unlocked and locked by the load unlocking pin locker, and at the moment, the self-unlocking pin bevel 28 and the connector bevel clamping groove 14 on the connector 12 are mutually embedded and connected, so that a reliable connection state of preliminary unlocking is maintained;
as shown in fig. 1, the connector 12 is in a shape of a convex, the upper slender section is matched with the grooves between the vertical plates in the connecting seat 1, and the size of the connector is slightly smaller than that of the grooves between the vertical plates; the connector 12 is provided with a connector locking synaptic groove 16 and a connector oblique angle clamping groove 14 which are symmetrically arranged at the positions corresponding to the positions of the load unlocking pin locking synapse 15 and the self unlocking pin oblique angle 28; the shape of the connector locking protrusion groove 16 is the same as that of the load unlocking pin locking protrusion 15, and the connector locking protrusion groove is semicircular, and the size of the connector locking protrusion groove is slightly larger than that of the load unlocking pin locking protrusion 15; the connector oblique angle clamping groove 14 is rectangular in shape and slightly larger than the self-unlocking pin 11 and the self-unlocking pin oblique angle 28 in size, but a convex feature is arranged at the upper part of one side close to the inner vertical plate 37 and is used for keeping the self-unlocking pin 11 locked by utilizing gravity load in the preliminary unlocking connection stage;
as shown in fig. 1, the ends of the connector 12 and the connecting seat 1 are respectively fixedly connected with a connecting buckle 13 which is respectively used for connecting with an air drop system and a parachute rope;
as shown in fig. 5 and 6, in the fully unlocked state, the locking trigger pin 3 moves downward under the combined pushing of the locking trigger pin spring 2 and the self-unlocking pin spring 10, and drives the load unlocking pin locker 7 to move downward together until the locking trigger pin limiting baffle 20 is clamped on the surface of the inner transverse plate 32; at this time, the self-unlocking pin 11 is completely retracted in the self-unlocking pin sliding hole 35 under the elastic release action of the self-unlocking pin spring 10, the load unlocking pin 9 is also completely retracted in the load unlocking pin sliding hole 36 due to the extrusion action when the preamble connector 12 is pulled out, and simultaneously, the load unlocking pin is locked by the embedded cooperation of the load unlocking pin locker 7 and the load unlocking pin locking groove 24; at this time, the whole connecting device is in a completely unlocked state;
as shown in fig. 1 and 2, when the connector 12 is inserted into the connecting seat 1, the connector 12 jacks up the locking trigger pin 3, the locking trigger pin 3 moves upwards, and the load unlocking pin locker 7 and the self unlocking pin control plate 7 are driven to move upwards and to two sides respectively; when the connector 12 is completely inserted into the connector seat 1, the load unlocking pin locker 7 just completely breaks away from the load unlocking pin locking groove 24, the load unlocking pin 9 is completely released, and the connector locking synaptic groove 16 is in embedded fit with the load unlocking pin locking synapse 15; in the process, the self-unlocking pin 11 is firstly propped against the surface of the inner vertical plate 37 under the pushing of the self-unlocking pin control plate 6 and cannot advance, and then is embedded into the connector bevel clamping groove 14 when the connector bevel clamping groove 14 reaches the corresponding position, so that the whole connecting device is in a complete locking state;
as shown in fig. 3 and fig. 4, when the air-drop system is in a stable descending state, under the action of gravity load of the air-drop system, the connector 12 moves downwards to squeeze the load unlocking pin 9 into the load unlocking pin sliding hole 36, at this time, the locking trigger pin 3 moves downwards under the combined action of the locking trigger pin spring 2 and the self-unlocking pin spring 10 to drive the load unlocking pin locker 7 to move downwards, and is embedded into the load unlocking pin locking groove 24 to enable the load unlocking pin 9 to be in an unlocking and locking state; at this time, under the action of gravity load, the connector 12 is mutually embedded and connected with the self-unlocking pin bevel 28 through the bulge of the connector bevel clamping groove 14, so that the reliable connection of the whole connecting device in a stable and descending stage is ensured, and the connecting device is in a primary unlocking state;
as shown in fig. 5 and 6, after the air-drop system falls to the ground, gravity load no longer acts on the connector 12, the connector 12 and the connector base 1 are in a free state, no forced acting force exists between the protrusion of the connector oblique angle clamping groove 14 and the self-unlocking pin oblique angle 28, the self-unlocking pin 11 fully retracts into the self-unlocking pin sliding hole 35 under the action of the self-unlocking pin spring 10, and the whole connecting device is in a fully unlocked state;
and the connector 12 is inserted again, and the process is repeated until the air drop task is completed, and the connecting device is completely unlocked.
Claims (10)
1. The self-unlocking connecting device of the air drop system is characterized by comprising a connecting seat (1) which is a hollow U-shaped shell, a connector (12) which is matched with the connecting seat (1), wherein the upper part of the connecting seat (1) is used for being connected with a parachute rope, and the bottom of the connector (12) is connected with the air drop system;
a locking trigger pin (3), a locking trigger pin spring (2), a transmission rod (4), a self-unlocking pin control plate (6), a load unlocking pin locker (7), a load unlocking pin spring (8), a load unlocking pin (9), a self-unlocking pin spring (10) and a self-unlocking pin (11) are arranged in the connecting seat (1);
the locking trigger pin spring (2), the load unlocking pin spring (8) and the self-unlocking pin spring (10) are all in a compressed state, the locking trigger pin (3) moves up and down under the action of the locking trigger pin spring (2), so that the load unlocking pin locker (7) is driven to move up and down, locking or releasing of the load unlocking pin is realized, the up and down movement of the locking trigger pin (3) is converted into the left and right reciprocating movement of the self-unlocking pin control plates (6) on two sides through the rotation of the transmission rods (4) on two sides, when the gravity load acts, the load unlocking pin (9) is unlocked, the self-unlocking pin (11) is kept locked, and the air drop system is in a stable descending state; when the air drop system falls to the ground, gravity load no longer acts on the connector (12), the connector (12) and the connecting seat (1) are in a free state, the self-unlocking pin (11) is unlocked, and the whole connecting device is in a complete unlocking state.
2. The connection device according to claim 1, characterized in that the connection base (1) comprises an outer transverse plate (31), an inner transverse plate (32), an outer riser (34) and an inner riser (33);
the inner transverse plate (32) is provided with a load unlocking pin locker sliding groove (21) and a locking triggering pin sliding groove (22) in the transverse center line direction, the locking triggering pin sliding groove (22) is positioned at the center of the inner transverse plate (32) and is square, the load unlocking pin locker sliding groove (21) is symmetrically distributed on two sides of the locking triggering pin sliding groove (22) along the center line direction of the inner transverse plate (32), the load unlocking pin locker sliding groove (21) is rectangular, the width of the load unlocking pin locker sliding groove is narrower than the locking triggering pin sliding groove (22), and the load unlocking pin locker sliding groove (21) downwards extends to an inner vertical plate (37);
the longitudinal center line direction of the inner vertical plate (37) is provided with a load unlocking pin sliding hole (36) and a self-unlocking pin sliding hole (35), and the size of the load unlocking pin sliding hole (36) is larger than that of the self-unlocking pin sliding hole (35) and is respectively larger than that of the load unlocking pin (9) and the self-unlocking pin (11); the height of the near center side hole of the self-unlocking pin sliding hole (35) is larger than that of the far center side;
the outer vertical plate (34) is provided with a control plate telescopic hole (33) matched with the load unlocking pin (9) and the self-unlocking pin (11).
3. The connecting device according to claim 2, characterized in that the connecting head (12) is in the shape of a "convex" and the upper elongated section cooperates with the recess between the inner risers of the connecting seat (1), the dimensions of which are smaller than the recess between the inner risers;
the connector (12) is provided with a connector locking synaptic groove (16) and a connector oblique angle clamping groove (14) which are symmetrically arranged;
the near center end of the load unlocking pin (9) is provided with a locking feature load unlocking pin locking synapse (15) which is in embedded fit with a connector locking synapse groove (16) on the connector (12) during locking, so that the whole device is completely locked; the self-unlocking pin (11) is provided with a locking characteristic self-unlocking pin bevel (28) near the center end, when gravity load acts, the load unlocking pin (9) is compressed and unlocked and locked by the load unlocking pin locker, and at the moment, a connector bevel clamping groove (14) on the connector (12) and the self-unlocking pin bevel (28) are mutually embedded and connected, so that a reliable connection state of preliminary unlocking is maintained;
the load unlocking pin (9) is provided with a load unlocking pin locking groove (24) which is matched with the load unlocking pin locker (7) for locking and releasing.
4. A connecting device according to claim 3, further comprising a transmission rod rotating branch (19), wherein the transmission rod rotating branch (19) is positioned at the longitudinal center line of the inner vertical plate (37), and is centrally and symmetrically arranged at the bottom of the side end of the load unlocking pin locker sliding groove (21); the transmission rod rotating support head (19) is higher than the inner transverse plate (32), the top end head of the transmission rod rotating support head is a round roller, and the round roller is in embedded fit with the transmission rod rotating support head sliding groove (23) of the transmission rod (4) so as to enable the transmission rod (4) to rotate along the transmission rod rotating support head (19).
5. The connecting device according to claim 4, wherein the locking trigger pin (3) is located at a transverse and longitudinal center point between the outer transverse plate (31) and the inner transverse plate (32), the locking trigger pin (3) slides up and down along the locking trigger pin sliding groove (22), two ends of the locking trigger pin spring (2) are respectively fixed at the lower surface of the outer transverse plate (31) and a center point of the top end of the locking trigger pin (3), the locking trigger pin limiting baffle (20) is fixed at the middle part of the locking trigger pin (3), and the width of the locking trigger pin limiting baffle is larger than that of the locking trigger pin sliding groove (22) so as to prevent the locking trigger pin (3) from penetrating through the locking trigger pin sliding groove (22); the opposite side surfaces of the locking trigger pin (3) are respectively provided with a transmission rod rotating shaft (26).
6. The connecting device according to claim 5, characterized in that a transmission rod rotating hole (25) matched with a transmission rod rotating shaft (26) is formed at the near center end of the transmission rod (4), and the up-and-down movement of the locking trigger pin (3) is transmitted to the transmission rod (4); the middle bottom of the transmission rod (4) is provided with a transmission rod rotating support head sliding groove (23) which is in embedded fit with the transmission rod rotating support head (19) to support the transmission rod (4) to rotate; the driving rod (4) is provided with a driving rod sliding head (27) at the far center end and is in a round roller shape, and the driving rod sliding head is in embedded fit with a driving rod sliding groove (17) on the inner surface of the self-unlocking pin control plate (6) to convert the rotation motion of the driving rod (4) into the reciprocating motion of the self-unlocking pin control plate (6).
7. The connecting device according to claim 7, wherein the load unlocking pin locker (7) is in a right angle shape, horizontal ends are symmetrically fixed on two sides of the locking trigger pin (3) and are parallel to the inner transverse plate (32), and the sliding groove (21) passing through the load unlocking pin locker moves up and down along with the locking trigger pin (3); the top of the vertical end is fixedly connected with the outer side of the horizontal end, and moves up and down along the longitudinal direction of the inner vertical plate (37) along with the horizontal end; the bottom of the vertical end is in embedded fit with a load unlocking pin locking groove (24), and when the locking trigger pin (3) moves upwards and downwards, the load unlocking pin locker (7) is respectively separated from and connected with the load unlocking pin locking groove (24) in an embedded mode.
8. The connection device according to claim 7, characterized in that the self-unlocking pin control plate (6) is arranged symmetrically along the transverse centre line between the outer riser (34) and the inner riser (37); the transmission rod sliding groove (17) is fixedly connected to the center of the top end of the self-unlocking pin control plate (6) and converts the rotation motion of the transmission rod (4) into the reciprocating motion of the self-unlocking pin control plate (6); an upper control board telescopic shaft (38) and a lower control board telescopic shaft (38) are fixed on the back of the self-unlocking pin control board (6), two control board telescopic holes (33) are formed in the outer vertical plate (34) at corresponding positions, the control board telescopic grooves (5) are externally connected with the control board telescopic holes (33), the self-unlocking pin control board (6) does left-right reciprocating motion along the control board telescopic grooves (5) through the control board telescopic shafts (38), and the self-unlocking pin (11) is compressed or released; the middle part of the self-unlocking pin control plate (6) is provided with a load unlocking pin sliding through hole (30) for the load unlocking pin spring to slide through.
9. The connecting device according to claim 8, wherein a spring base (18) for fixing the load unlocking pin spring (8) is fixed to the distal center side end portion of the load unlocking pin (9) and the outer riser (34), respectively;
the spring base fixing plate (29) and the inner vertical plate (37) of the self-unlocking pin (11) are respectively fixed with two spring bases (18) for fixing the self-unlocking pin springs (10) arranged on two sides of the self-unlocking pin (11).
10. A method of performing an air drop on an air drop system using the connection device of claim 9, comprising the steps of:
step (1): the ends of the connector (12) and the connecting seat (1) are respectively fixedly connected with a connecting buckle (13) which is respectively used for connecting with the air drop system and the parachute rope;
step (2): in a complete unlocking state, the locking trigger pin (3) moves downwards under the combined pushing of the locking trigger pin spring (2) and the self-unlocking pin spring (10) to drive the load unlocking pin locker (7) to move downwards together until the locking trigger pin limiting baffle plate (20) is clamped on the surface of the inner transverse plate (32); at the moment, the self-unlocking pin (11) is completely retracted in the self-unlocking pin sliding hole (35) under the elastic release action of the self-unlocking pin spring (10), the load unlocking pin (9) is also completely retracted in the load unlocking pin sliding hole (36) due to the extrusion action when the preamble connector (12) is pulled out, and meanwhile, the load unlocking pin locker (7) is locked by being in embedded fit with the load unlocking pin locking groove (24), and the whole connecting device is in a complete unlocking state;
step (3): when the connector (12) is inserted into the connecting seat (1), the connector (12) jacks up the locking trigger pin (3), the locking trigger pin (3) moves upwards, and the load unlocking pin locker (7) and the self-unlocking pin control plate (6) are driven to move upwards and to the two sides respectively; when the connector (12) is completely inserted into the connecting seat (1), the load unlocking pin locker (7) is just completely separated from the load unlocking pin locking groove (24), the load unlocking pin (9) is completely released, and the connector locking synaptic groove (16) is in embedded fit with the load unlocking pin locking synapse (15); in the process, the self-unlocking pin (11) is firstly propped against the surface of the inner vertical plate (37) under the pushing of the self-unlocking pin control plate (6) and cannot advance, and then is embedded into the connector bevel clamping groove (14) when the connector bevel clamping groove (14) reaches the corresponding position, so that the whole connecting device is in a complete locking state;
step (4): when the air drop system is in a stable descending state, under the action of gravity load of the air drop system, the connector (12) moves downwards, the load unlocking pin (9) is extruded into the load unlocking pin sliding hole (36), at the moment, the locking triggering pin (3) moves downwards under the combined action of the locking triggering pin spring (2) and the self-unlocking pin spring (10), the load unlocking pin locker (7) is driven to move downwards, and the load unlocking pin locking groove (24) is embedded, so that the load unlocking pin (9) is in an unlocking locking state; at the moment, under the action of gravity load, the connector (12) is mutually embedded and connected with the self-unlocking pin bevel angle (28) through the bulge of the connector bevel angle clamping groove (14), so that the reliable connection of the whole connecting device in a stable descending stage is ensured, and the connecting device is in a primary unlocking state;
step (5): when the air drop system falls to the ground, gravity load does not act on the connector any more, the connector (12) and the connecting seat (1) are in a free state, no forced acting force exists between the bulge of the connector oblique angle clamping groove (14) and the self-unlocking pin oblique angle (28), the self-unlocking pin (11) completely retracts into the self-unlocking pin sliding hole (35) under the action of the self-unlocking pin spring (10), and the whole connecting device is in a complete unlocking state;
step (6): and (3) inserting the connector (12) again, and repeating the process until the air drop task is completed, so that the connecting device is completely unlocked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311089101.6A CN116873200A (en) | 2023-08-25 | 2023-08-25 | Self-unlocking connecting device of air drop system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311089101.6A CN116873200A (en) | 2023-08-25 | 2023-08-25 | Self-unlocking connecting device of air drop system |
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| CN116873200A true CN116873200A (en) | 2023-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311089101.6A Pending CN116873200A (en) | 2023-08-25 | 2023-08-25 | Self-unlocking connecting device of air drop system |
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| CN114987765A (en) * | 2022-04-11 | 2022-09-02 | 中国电子科技集团公司第五十八研究所 | Identification releasing and unfolding device and method for unmanned aerial vehicle auxiliary landing |
| CN116022341A (en) * | 2022-12-14 | 2023-04-28 | 航宇救生装备有限公司 | Three-dimensional automatic quick-release lock |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050103926A1 (en) * | 2003-10-27 | 2005-05-19 | Hawthorne Dana D. | Locking device with solenoid release pin |
| CN106672236A (en) * | 2016-08-26 | 2017-05-17 | 航宇救生装备有限公司 | Rapid tethering and separating device |
| CN110803285A (en) * | 2019-11-15 | 2020-02-18 | 航宇救生装备有限公司 | Landing disengaging lock and automatic unlocking method |
| CN114104341A (en) * | 2021-10-29 | 2022-03-01 | 中国运载火箭技术研究院 | Passive recovery locking device for space transportation and use method |
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