CN111891412A - Protective cover ejection device - Google Patents
Protective cover ejection device Download PDFInfo
- Publication number
- CN111891412A CN111891412A CN202010689947.3A CN202010689947A CN111891412A CN 111891412 A CN111891412 A CN 111891412A CN 202010689947 A CN202010689947 A CN 202010689947A CN 111891412 A CN111891412 A CN 111891412A
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- Prior art keywords
- ignition
- protective cover
- ejection device
- cutting
- unlocking piston
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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
- B64G1/64—Systems for coupling or separating cosmonautic vehicles or parts thereof, e.g. docking arrangements
- B64G1/645—Separators
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- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Aviation & Aerospace Engineering (AREA)
- Automotive Seat Belt Assembly (AREA)
Abstract
The invention discloses a protective cover ejection device, wherein an ignition and initiation mechanism, a connection and separation mechanism and a cable cutting mechanism are arranged in a protective cover, the ignition and initiation mechanism is fixedly connected with the cable cutting mechanism in the radial direction, the cable cutting mechanism is positioned below the ignition and initiation mechanism, and the ignition and initiation mechanism is fixedly connected with the connection and separation mechanism in the axial direction. The invention has the advantages that: the invention is suitable for connecting and separating devices of protective covers of cruise missiles, space vehicles and the like, realizes reliable connection of the protective covers during connection, realizes quick separation of the protective covers through a firer actuating device during separation, simultaneously realizes cutting of cables with power supplies, and completes ejection separation of the protective covers and missile bodies or carrier bodies.
Description
Technical Field
The invention relates to an ejection device, in particular to a protective cover ejection device, and belongs to the technical field of aerospace and firework power devices.
Background
The existing protective cover ejection device mainly comprises an igniter, an initiating explosive ejector, an initiating explosive cutter and an explosion transfer device which are all 4 independent structures, wherein the initiating explosive ejector and the initiating explosive cutter are actuated by igniting the explosion transfer device through the igniter, and then the initiating explosive ejector and the initiating explosive cutter are detonated to actuate, so that the ejection separation of the protective cover and the cutting of a self-contained cable are realized. The combined action of a plurality of devices is needed, the occupied space is large, the explosive and powder consumption is large, an explosion transfer device is needed, the cost is high, and the realization of subsequent ejection and cutting functions is influenced if the explosion transfer device fails. And the reliability has weak links.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a protective cover ejection device which is suitable for connecting and separating devices of protective covers of cruise missiles and space vehicles, the protective covers are reliably connected during connection, the protective covers are quickly separated through an initiating explosive actuating device during separation, meanwhile, the cables with power supplies are cut off, and ejection and separation of the protective covers are completed.
The protective cover ejection device is characterized in that the ignition and initiation mechanism, the connection and separation mechanism and the cable cutting mechanism are integrally mounted on the protective cover through the threaded interface, the ignition and initiation mechanism and the cable cutting mechanism are fixedly connected in the radial direction, the cable cutting mechanism is located below the ignition and initiation mechanism, and the ignition and initiation mechanism and the connection and separation mechanism are fixedly connected in the axial direction.
The safety ignition device is characterized in that one end of an unlocking piston of the connection and separation mechanism is inserted into a main body structure of the ignition and detonation mechanism, the other end of the unlocking piston penetrates through the protective cover and then axially locks the unlocking piston, the escape cap and the connecting cylinder through locking screws, a jacking element capable of rolling is arranged between the unlocking piston and the connecting cylinder, an unlocking groove is formed in one end, close to the ignition and detonation mechanism, of the unlocking piston, a steel ball is selected as the jacking element, and the unlocking groove is a groove.
The main structure of the ignition and detonation mechanism is sleeved outside the unlocking piston, the igniter is connected with the power supply cable and installed in the mounting hole above the main structure, the medicine box is arranged inside the main structure and located below the igniter, and the cable cutting mechanism is installed at the lower end of the main structure.
The cutting cylinder of the cable cutting mechanism is fixedly connected with the ignition and initiation mechanism, a cutter is arranged in the cutting cylinder, and a chopping block is arranged below the cutting cylinder.
In order to prevent the unlocking piston from causing axial movement due to external force impact or vibration and causing the tight jacking element to roll to cause mistaken unlocking, a piston shearing pin is arranged between the main body structure and the unlocking piston.
A buffer cushion is arranged between the connecting cylinder and the escape cap.
One side of the main body structure opposite to the unlocking piston is provided with a mounting hole for mounting the blocking cover, and a sealing ring is arranged between the blocking cover and the main body structure.
A cutting section of thick bamboo install on the major structure through big mounting cap, a cutting section of thick bamboo is equipped with C type open slot, the cutter in a cutting section of thick bamboo is fixed a position by the shear pin, the shear pin is installed in a cutting section of thick bamboo, the chopping block is installed in a cutting section of thick bamboo below, is fastened by little mounting cap.
The cutter is provided with two annular sealing grooves, and two sealing rubber rings I are arranged in the sealing grooves.
The unlocking piston is provided with two annular sealing grooves, and two sealing rubber rings II are arranged in the sealing grooves.
The invention has the advantages that: the invention is suitable for connecting and separating devices of protective covers of cruise missiles, space vehicles and the like, realizes reliable connection of the protective covers during connection, realizes quick separation of the protective covers through a firer actuating device during separation, simultaneously realizes cutting of cables with power supplies, and completes ejection separation of the protective covers and missile bodies or carrier bodies.
Drawings
Fig. 1 is a schematic structural view of the protective cover ejection device of the present invention.
Fig. 2 is a schematic structural view of the protection cover ejection device installed on the protection cover.
Fig. 3 is a schematic view of the unlocking start structure of the present invention.
Fig. 4 is a schematic diagram of a structure for completing ejection separation according to the present invention.
The labels in the figure are: 1-protective cover, 2-power supply cable, 3-igniter, 4-medicine box, 5-cutter, 6-cutting cylinder, 7-chopping block, 8-small mounting cap, 9-shearing pin, 10-sealing rubber ring I, 11-big mounting cap, 12-blanking cap, 13-sealing ring, 14-main body structure, 15-sealing rubber ring II, 16-piston shearing pin, 17-unlocking piston, 18-jacking element, 19-escaping cap, 20-locking screw, 21-buffer pad and 22-connecting cylinder.
Detailed Description
The protective cover ejection device will be further described with reference to the accompanying drawings.
The protective cover ejection device is characterized in that the ignition and initiation mechanism, the connection and separation mechanism and the cable cutting mechanism are arranged in the protective cover, the ignition and initiation mechanism is fixedly connected with the cable cutting mechanism in the radial direction, the cable cutting mechanism is located below the ignition and initiation mechanism, and the ignition and initiation mechanism is fixedly connected with the connection and separation mechanism in the axial direction.
The main structure of the ignition and detonation mechanism is inserted into one end of an unlocking piston 17 connected with the separation mechanism, the other end of the unlocking piston 17 penetrates through the protective cover 1 and then axially locks the unlocking piston 17, the escape cap 19 and the connecting cylinder 22 through a locking screw 20, a cushion pad is arranged between the connecting cylinder 22 and the escape cap 19, a jacking element 18 capable of rolling is arranged between the unlocking piston 17 and the connecting cylinder 22, an unlocking groove is formed in one end, close to the ignition and detonation mechanism, of the unlocking piston 17, a steel ball is selected for the jacking element 18, and the unlocking groove is a groove. In order to prevent the unlocking piston 17 from axially shifting due to external impact or vibration, which causes the jacking element 18 to roll and unlock, a piston shear pin 16 is arranged between the main body structure 14 and the unlocking piston 17. Two annular sealing grooves are formed in the unlocking piston 17, and two sealing rubber rings 15 are mounted in the sealing grooves.
A cutting cylinder 6 of the cable cutting mechanism is fixedly connected with the ignition and initiation mechanism, the cutting cylinder 6 is installed on a main body structure 14 through a large installation cap 11, a cutter 5 is arranged in the cutting cylinder 6, and a chopping board 7 is installed below the cutting cylinder 6. A cutting barrel 6 is provided with a C-shaped open slot, a cutter 5 in the cutting barrel 6 is positioned by a shearing pin 9, the shearing pin 9 is installed in the cutting barrel 6 through a shearing installation hole, and a chopping block 7 is installed below the cutting barrel 6 and is fastened by a small installation cap 8. The cutter 5 is provided with two annular sealing grooves, and two sealing rubber rings I10 are arranged in the sealing grooves.
The protective cover ejection device integrates three functions of a traditional ejection and throwing device into a whole, and is provided with an ignition and initiation mechanism, a connection and separation mechanism and a cable cutting mechanism, so that a booster device is omitted.
The protection cover ejection device is installed on the protection cover 1 and is inserted from one side of the protection cover 1, the escape cap 19 is installed on the protection cover 1 on the right side from the other side through 4 screws, and then the escape cap 19 and the connecting cylinder 22 are axially locked through the locking screws 20, so that the locking force loading of the protection cover ejection device is realized, and the protection cover ejection device is shown in fig. 2.
When the ejection separation is carried out, the power supply cable 2 supplies power to the igniter 3, the igniter 3 ignites gunpowder in the medicine box 4, high-pressure gunpowder gas is generated in the main body structure 14, the cable cutting mechanism is pushed to complete cutting of the power supply cable 2, and meanwhile, the gunpowder gas pushes the unlocking piston 17 to complete unlocking and ejection movement.
The major structure 14 contains 4 circular locking holes, 2 radial spacing grooves, 1 igniter mounting hole, 1 cutting cylinder mounting hole, a blanking cover mounting hole and a mounting flange. The connecting cylinder 22 structure comprises 1 locking groove, 2 radial limiting protrusions and a threaded mounting hole. The cutting cylinder 6 structure contains 1 shear pin mounting hole, 1C type open slot, 1 little mounting cap 8's hickey.
Fig. 3 shows the unlocking action, when the groove of the unlocking piston 17 moves to the contact point of the steel ball, the steel ball starts to move inwards under the action of the pretightening force, and the locking force between the main structure 14 and the connecting cylinder 22 disappears, so that the unlocking is realized.
Fig. 4 shows the ejection action, after the unlocking action is completed, the gunpowder gas continues to push the unlocking piston 17 to move, the unlocking piston 17 strikes the boss on the inner side of the connecting cylinder 22, and drives the escape cap 19 and the protective cover on the right side of the air inlet channel to start the separation movement. In order to ensure that the separated protective cover has enough flying speed, the unlocking piston 17 keeps pushing the connecting cylinder 22 until the unlocking piston 17 impacts the limiting surface in the main structure 14 to complete the action of the unlocking piston 17, and the right protective cover 1 is quickly thrown away under the drive of the escape cap 19.
When the protective cover ejection device is assembled in a single machine, the main body structure 14 and the connecting cylinder 22 are in butt joint in advance, steel balls are arranged in locking holes of the main body structure 14 and locking grooves of the connecting cylinder 22, the unlocking piston 17 is inserted from the left side of the main body structure 14 and abuts against the steel balls to limit radial movement of the steel balls, and axial connection of the main body structure 14 and the connecting cylinder 22 is achieved. In order to prevent the unlocking piston 17 from axially jumping due to external force impact or vibration to cause the steel balls to move to unlock, a piston shearing pin 16 is inserted between the unlocking piston 17 and the main body structure 14, and two annular sealing rings which are provided with two sealing rubber rings 15 are designed on the unlocking piston 17.
A cutting cylinder 6 is installed on a main body structure 14 through a large installation cap 11, a cutter 5 is positioned in the cutting cylinder 6 through a shearing pin 9, two annular sealing grooves are formed in the cutter 5, two sealing rubber rings 10 are installed, and a C-shaped opening is formed in the lower portion of the cutting cylinder 6 and used for installing a power supply cable 2 in the cutting cylinder 6. After the cutting cylinder 6, the cutter 5, the shearing pin 9 and the large mounting cap 11 are mounted in place, the power supply cable 2 is pressed into the C-shaped opening below the cutting cylinder 6, the chopping block 7 is arranged below the cutting cylinder 6, and then the small mounting cap 8 is screwed down to complete the mounting of the cutter part.
The power supply cable 2 is a self-carrying cable of the protective cover ejection device and supplies power to the igniter 3, so that ignition and detonation of the igniter are realized. The igniter 3 is connected with the power supply cable 2 and is arranged in the mounting hole above the main body structure 14 and is an ignition and detonation mechanism of the protective cover ejection device.
The powder is filled in the medicine box 4 and is used as an important component of a high-pressure gas driving source, the powder is filled from the left side of the main structure 14, and then the sealing ring 13 and the blocking cover 12 are installed, so that the construction of a powder gas sealing cavity is realized.
When the protection cover ejection device is installed on the protection cover, the protection cover ejection device is inserted from one side of the protection cover, 4 screws are used to penetrate through a flange installation hole of a main body structure 14 to install the protection cover ejection device on a protection cover on the left side, the other side is used to install an escape cap 19 on a protection cover on the right side through 4 screws, a cushion pad 21 is placed between the escape cap 19 and a connecting cylinder 22, then the escape cap 19 and the connecting cylinder 22 are axially locked through a locking screw 20, and the locking force loading of the protection cover ejection device is realized, as shown in fig. 2.
When the ejection separation is carried out, the power supply cable 2 supplies power to the igniter 3, the igniter 3 rapidly burns to fire, the ignition powder ignites the medicine box 4 to rapidly generate high-pressure gunpowder gas, the gunpowder gas pushes the cutter 5 in the cutting cylinder 6, the cutting pin 9 is cut off, the cutter 5 rapidly and linearly moves until the cutter 5 impacts the cutting board 7, and the power supply cable 2 is cut. Meanwhile, the gunpowder gas pushes the unlocking piston 17, and the cutting piston shearing pin 16 moves rapidly. When the groove of the unlocking piston 17 moves to a steel ball contact point, the steel ball starts to move inwards under the action of the pretightening force, the locking force between the main body structure 14 and the connecting cylinder 22 disappears, and unlocking is realized. The gunpowder gas continuously pushes the unlocking piston 17 to move, the unlocking piston 17 impacts a boss on the inner side of the connecting cylinder 22, the escape cap 19 and the protective cover on the right side of the air inlet channel are driven, and separation movement is started. In order to ensure that the separated protective cover has enough flying speed, the unlocking piston 17 keeps pushing the connecting cylinder 22 until the unlocking piston 17 impacts the limiting surface in the main structure 14 to complete the action of the unlocking piston 17, and the protective cover on the right side is quickly thrown away under the driving of the escape cap 19.
The main working principle of the protective cover ejection device is that an igniter, an ejection structure and a cutting structure are integrated and designed into a whole, and the protective cover ejection device is miniaturized in structure, light in weight, integrated and low in cost. The single igniter is used for ignition and detonation, and cutting with the power supply cable and ejection separation of the protective cover are realized through an integrated structure design.
When the protection cover ejection device is connected and locked, the protection cover ejection device is installed on a protection cover and is inserted from one side of a protection cover 1, the main body structure 14 is installed on a protection cover on the left side through 4 screws, the escape cap 19 is installed on a protection cover on the right side through 4 screws on the other side, and then the escape cap 19 and the connecting cylinder 22 are axially locked through the locking screws 20. The steel ball is arranged in a locking hole between the main structure 14 and the connecting cylinder 22, and cannot move radially under the supporting action of the unlocking piston 17, so that the axial relative movement between the main structure 14 and the connecting cylinder 22 is limited. The main structure 14 is provided with a limiting groove for limiting radial rotation at the interface with the connecting cylinder 22, so as to prevent the main structure 14 and the connecting cylinder 22 from rotating relatively. The pre-tightening force of the protective cover ejection device is loaded by the tightening torque of the locking screw 20.
When the ejection separation is carried out, the power supply cable 2 supplies power to the igniter 3, the igniter 3 rapidly burns to fire, the ignition powder ignites gunpowder in the medicine box 4 to rapidly generate high-pressure gunpowder gas, the gunpowder gas pushes the cutting knife 5 in the cutting barrel 6, the cutting pin 9 is cut off, the cutting knife 5 rapidly and linearly moves until the cutting knife 5 impacts the cutting board 7, and the power supply cable 2 is cut. Meanwhile, the gunpowder gas pushes the unlocking piston 17, and the cutting piston shearing pin 16 moves rapidly. When the groove of the unlocking piston 17 moves to a steel ball contact point, the steel ball losing radial support starts to move inwards under the action of pretightening force, the locking force between the main body structure 14 and the connecting cylinder 22 disappears, and unlocking is realized. The gunpowder gas continuously pushes the unlocking piston 17 to move, the unlocking piston 17 impacts a boss on the inner side of the connecting cylinder 22, the escape cap 19 and the protective cover on the right side of the air inlet channel are driven, and separation movement is started. In order to ensure that the separated protective cover has enough flying speed, the unlocking piston 17 keeps pushing the connecting cylinder 22 until the unlocking piston 17 impacts the limiting surface in the main structure 14 to complete the action of the unlocking piston 17, and the protective cover on the right side is quickly thrown away under the driving of the escape cap 19.
The foregoing shows and describes the general principles, general structure, and advantages of the present invention. It will be understood by those skilled in the art that variations and modifications in size and orientation may be made without departing from the spirit and scope of the invention, which is intended to be protected by the following claims.
Claims (10)
1. The utility model provides a safety cover jettison device, ignition detonating mechanism, connection separating mechanism and the integrated an organic whole of cable cutting mechanism are installed on the safety cover, its characterized in that: the ignition and detonation mechanism is fixedly connected with the cable cutting mechanism in the radial direction, the cable cutting mechanism is positioned below the ignition and detonation mechanism, and the ignition and detonation mechanism is fixedly connected with the connection and separation mechanism in the axial direction.
2. The protective cover ejection device of claim 1, wherein: one end of an unlocking piston of the connection and separation mechanism is inserted into a main body structure of the ignition and detonation mechanism, the other end of the unlocking piston penetrates through the protective cover and then axially locks the unlocking piston, the escape cap and the connecting cylinder through locking screws, a jacking element capable of rolling is arranged between the unlocking piston and the connecting cylinder, and an unlocking groove is formed in one end, close to the ignition and detonation mechanism, of the unlocking piston. (this is a generalization of steel balls, while protecting other components that can accomplish this function).
3. The protective cover ejection device of claim 2, wherein: the main structure of the ignition and detonation mechanism is sleeved outside the unlocking piston, the igniter is connected with the power supply cable and installed in the mounting hole above the main structure, the medicine box is arranged inside the main structure, and the cable cutting mechanism is installed at the lower end of the main structure.
4. The protective cover ejection device of claim 1 or 3, wherein: the cutting cylinder of the cable cutting mechanism is fixedly connected with the main body structure of the ignition and initiation mechanism, a cutter is arranged in the cutting cylinder, and a chopping block is arranged below the cutting cylinder.
5. The protective cover ejection device of claim 3, wherein: and a piston shearing pin is arranged between the main body structure and the unlocking piston.
6. The protective cover ejection device of claim 2, wherein: a buffer cushion is arranged between the connecting cylinder and the escape cap.
7. The protective cover ejection device of claim 3, wherein: one side of the main body structure opposite to the unlocking piston is provided with a mounting hole for mounting the blocking cover, and a sealing ring is arranged between the blocking cover and the main body structure.
8. The protective hood ejection device of claim 4, wherein: the cutting cylinder is installed on the main body structure through a large installation cap, the cutting cylinder is provided with a C-shaped open slot, a cutter in the cutting cylinder is positioned by a shearing pin, the shearing pin is installed in a shearing installation hole of the cutting cylinder, and a chopping block is installed below the cutting cylinder and fastened by a small installation cap.
9. The protective hood ejection device of claim 4, wherein: the cutter is provided with two annular sealing grooves, and two sealing rubber rings I are arranged in the sealing grooves.
10. The protective cover ejection device of claim 2, wherein: the unlocking piston is provided with two annular sealing grooves, and two sealing rubber rings II are arranged in the sealing grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010689947.3A CN111891412A (en) | 2020-07-17 | 2020-07-17 | Protective cover ejection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010689947.3A CN111891412A (en) | 2020-07-17 | 2020-07-17 | Protective cover ejection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111891412A true CN111891412A (en) | 2020-11-06 |
Family
ID=73190313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010689947.3A Pending CN111891412A (en) | 2020-07-17 | 2020-07-17 | Protective cover ejection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111891412A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113983864A (en) * | 2021-09-30 | 2022-01-28 | 北京空间机电研究所 | High-efficient firer device of integration is cut to bullet |
-
2020
- 2020-07-17 CN CN202010689947.3A patent/CN111891412A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113983864A (en) * | 2021-09-30 | 2022-01-28 | 北京空间机电研究所 | High-efficient firer device of integration is cut to bullet |
| CN113983864B (en) * | 2021-09-30 | 2023-08-29 | 北京空间机电研究所 | Bullet is cut high-efficient fire frock of integration |
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