CN104691776A - Permanent magnet linear launch device - Google Patents
Permanent magnet linear launch device Download PDFInfo
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- CN104691776A CN104691776A CN201310648554.8A CN201310648554A CN104691776A CN 104691776 A CN104691776 A CN 104691776A CN 201310648554 A CN201310648554 A CN 201310648554A CN 104691776 A CN104691776 A CN 104691776A
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- permanent
- linear motor
- ejection platform
- catapult
- magnet
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Abstract
The invention provides a permanent magnet linear launch device, which comprises a launch platform device, permanent magnet linear motors and a support platform used for supporting the launch platform device and the permanent magnet linear motors. Primary stages of the permanent magnet linear motors are arranged on the support platform; secondary stages of the permanent magnet linear motors are arranged on the launch platform device; a launch platform support plate used for supporting the launch platform device is arranged on the support platform, and the launch platform device can move relative to the launch platform support plate in the length direction of the launch platform support plate; two permanent magnet linear motors are arranged, i.e. a first permanent magnet linear motor and a second permanent magnet linear motor; the primary stage of the first permanent magnet linear motor and the primary stage of the second permanent magnet linear motor are arranged on both sides of the support platform symmetrically; the secondary stage of the first permanent magnet linear motor and the secondary stage of the second permanent magnet linear motor are arranged on both sides of the launch platform device symmetrically. The longitudinal space for launching is saved, and the efficiency of the permanent magnet linear launch device, and the stability and safety in the launching process are improved.
Description
Technical field
The present invention relates to a kind of electromagnetic launch device, particularly relate to a kind of permanent-magnet linear catapult-launching gear adopting permanent-magnetism linear motor to drive.
Background technology
Electromagnetic launch refers to that the object be launched does not enable the engine installation of self, and is accelerate means with electromagnetic force, and the power by projector imparting obtains enough kinergeties and realizes a kind of launch mode of transmitting.Compared with other launch modes such as gunpowder propelling, with the body of electromagnetism ejection launch, not only speed is faster, range is farther, and relies on advanced power electronic devices, and the process of Electromagnetic Launching can accomplish whole-process control.Owing to adopting electric drive, by regulating the size of electric current, Electromagnetical ejector not only can launch the little light load to several kilograms, propelled at high velocity can also arrive greatly the heavy lift of several tons, as aircraft, and guided missile etc.The equipment that launches of active service aircraft carrier is steam catapult, but it is made up of emission coefficient, steam unit, tow rope clamping system, lubrication and control system etc., bulky and complicated.This makes it there are some inevitable defects from the beginning: (1) use cost is high, efficiency is low, auxiliary facility is many, system is loaded down with trivial details, require high to links; (2) maintenance cost is high, and sealing band is changed frequent and loaded down with trivial details, requires higher to material; (3) a large amount of fresh water need be consumed.Along with modern marine military affairs improve the requirement of fight capability, replace traditional steam catapult in the urgent need to studying the new equipment that launches.
The electromagnetic launch major part of current use is line inductance electromotor, it promotes the armature be connected with aircraft, in order to reach required thrust, often elementary do very long, and launch to reach high speed electromagnetic, it is comparatively large that elementary pole span designs, and so not only needs larger space but also waste a lot of copper, make whole ejection system efficiency lower, this is irrational selection for occasion that is very high to space requirement or that frequently launch.If in addition due to be in operation position transduser be placed on elementary on, not only often pair extremely under by needs one group of position transduser, and often how the signal organized between position transduser switches will be very difficult, if adopt magnetic railings ruler or grating scale will greatly to increase the cost of catapult-launching gear, and the pig-tail wire of power supply will be very large problem.Patent No. ZL201310005736.3 describes a kind of active magnetic electromagnetism ereisma, utilize active magnetic support technology carrier-borne aircraft ejection platform, high-power line inductance electromotor is adopted to drive ejection platform, although abandoned mechanical support, but add huge suspension magnet and suspension control system, add the cost of whole ejection system, and run on high speed situation, suspend control is had higher requirement.
Summary of the invention
In view of the present situation of prior art, the object of the present invention is to provide a kind of permanent-magnet linear catapult-launching gear, its structure is simple, saves the longitudinal space launched, and improves the stability of ejection platform device in emission process and safety.For achieving the above object, technical scheme of the present invention is as follows:
A kind of permanent-magnet linear catapult-launching gear, comprise ejection platform device, permanent-magnetism linear motor and the support platform for supporting described ejection platform device and permanent-magnetism linear motor, described ejection platform device is for placing projectile, the elementary of described permanent-magnetism linear motor is arranged in described support platform, the secondary of described permanent-magnetism linear motor is arranged on described ejection platform device, described support platform is provided with the ejection platform stay bearing plate for supporting described ejection platform device, described ejection platform device can move relative to described ejection platform stay bearing plate on the length direction of described ejection platform stay bearing plate, the quantity of described permanent-magnetism linear motor is two, be respectively the first permanent-magnetism linear motor and the second permanent-magnetism linear motor, the elementary both sides being symmetricly set on described support platform of elementary and described second permanent-magnetism linear motor of described first permanent-magnetism linear motor, the secondary both sides being symmetricly set on described ejection platform device of secondary and described second permanent-magnetism linear motor of described first permanent-magnetism linear motor.
Wherein in an embodiment, the first level length of described permanent-magnetism linear motor is greater than secondary length.
Wherein in an embodiment, the elementary of described permanent-magnetism linear motor is modular elementary, and each primary module is made up of coil, elementary iron core and elementary iron core mounting bar;
The secondary of described permanent-magnetism linear motor is modular secondary, and each secondary module is made up of the secondary iron core of permanent magnet and magnetic conduction.
Wherein in an embodiment, described permanent-magnet linear catapult-launching gear also comprises detecting device;
Described detecting device comprises the position transduser being embedded in described ejection platform device, the power supply of described position transduser and the magnet steel that is arranged in described ejection platform stay bearing plate, and the position that described magnet steel is installed is corresponding with described position transduser.
Wherein in an embodiment, the pole span of described magnet steel is identical with the secondary pole span of described permanent-magnetism linear motor.
Wherein in an embodiment, the control housing of described position transduser and described permanent-magnet linear catapult-launching gear adopts transmission of wireless signals.
Wherein in an embodiment, described ejection platform device arranges side roll, lower rollers and upper roller, described side roll contacts with the side of described ejection platform stay bearing plate, described lower rollers contacts with the bottom surface of described ejection platform stay bearing plate, described upper roller contacts with the end face of described ejection platform stay bearing plate, and described ejection platform stay bearing plate is embedded in described ejection platform device.
Wherein in an embodiment, the rear and front end of described support platform is also respectively arranged with shock absorber, and described shock absorber is made up of baffle plate and buffing pad.
Wherein in an embodiment, described permanent-magnet linear catapult-launching gear also comprises the elementary drive system for controlling described permanent-magnetism linear motor, described drive system adopts H bridge type of drive, the quantity of described H bridge is one group or two groups, adopts intersection sectional power supply when the quantity of described H bridge is two groups.
Wherein in an embodiment, described in described permanent-magnet linear catapult-launching gear, the transmitting terminal of support platform arranges the aviation socket of active electric wire, and this aviation socket is connected on the control housing of described permanent-magnet linear catapult-launching gear by the aviation plug matched with it.
The invention has the beneficial effects as follows:
Permanent-magnet linear catapult-launching gear of the present invention, structure is simple, adopt two permanent-magnetism linear motors to advance projectile simultaneously, significantly improve and advance space, save the longitudinal space launched, improve the efficiency of permanent-magnet linear catapult-launching gear, improve the stability of ejection platform device in emission process and safety.The modularization of permanent-magnetism linear motor, greatly simplifies processing and the mounting process of parts; Position transduser is embedded the bottom of ejection platform device, and form position detecting device with the magnet steel in ejection platform stay bearing plate, so only need one group of position transduser accurately can detect the position of ejection platform device; Adopt transmission over radio to detect secondary locus, avoid active electric wire Layout Problem, thus improve the positioning precision of ejection platform device further, extend service life; This permanent-magnet linear catapult-launching gear compact conformation, non-environmental-pollution simultaneously.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of permanent-magnet linear electromagnetic launch device of the present invention;
Fig. 2 is the structural representation of the ejection platform device of Fig. 1;
Fig. 3 is the structural representation of the ejection platform stay bearing plate of Fig. 1;
Fig. 4 is the elementary modular construction schematic diagram of the permanent-magnetism linear motor of Fig. 1;
Fig. 5 represents the driving principle schematic diagram of permanent-magnet linear catapult-launching gear;
Fig. 6 represents the three phase current drive singal schematic diagram of permanent-magnet linear catapult-launching gear;
Fig. 7 is the elementary drive part by part schematic diagram of permanent-magnet linear catapult-launching gear.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, permanent-magnet linear catapult-launching gear of the present invention is further elaborated.Should be appreciated that specific embodiment described herein only for explaining the present invention, being not intended to limit the present invention.
Referring to figs. 1 through Fig. 7, permanent-magnet linear catapult-launching gear one embodiment of the present invention comprises ejection platform device 1, permanent-magnetism linear motor and the support platform 4 for supporting ejection platform device 1 and permanent-magnetism linear motor, ejection platform device 1 is for placing projectile 9, elementary 2,2 ' of permanent-magnetism linear motor is arranged in support platform 4, secondary 11,11 ' of permanent-magnetism linear motor is arranged on ejection platform device 1, and the elementary length of 2,2 ' of permanent-magnetism linear motor is greater than the secondary length of 11,11 '; The quantity of permanent-magnetism linear motor is two, be respectively the first permanent-magnetism linear motor and the second permanent-magnetism linear motor, first permanent-magnetism linear motor is identical with described second permanent-magnetism linear motor, elementary 2 and the second elementary 2 ' both sides being symmetricly set on support platform 4 of permanent-magnetism linear motor of the first permanent-magnetism linear motor; Secondary 11 and the second secondary 11 ' both sides being symmetricly set on ejection platform device 1 of permanent-magnetism linear motor of the first permanent-magnetism linear motor.
Preferably, permanent-magnetism linear motor elementary 2,2 ' for modular elementary, each primary module is made up of coil 21, elementary iron core 22 and elementary iron core mounting bar 23; Secondary 11,11 ' of permanent-magnetism linear motor is also modular secondary, and each secondary module is made up of the secondary iron core 111,111 ' of permanent magnet 112,112 ' and magnetic conduction.The needs launched according to ejection platform device 1 can adjust the quantity of primary module and secondary module.
Support platform 4 is provided with the ejection platform stay bearing plate 5 for supporting ejection platform device 1, ejection platform device 1 can move relative to ejection platform stay bearing plate 5 on the length direction of ejection platform stay bearing plate 5, elementary 2,2 ' of permanent-magnetism linear motor is placed in the both sides of ejection platform stay bearing plate 5, the bottom of ejection platform stay bearing plate 5 is provided with the permanent-magnetism linear motor adapter plate 3 supporting permanent-magnetism linear motor elementary 2,2 ', the rear and front end of support platform 4 is also respectively arranged with shock absorber, and shock absorber is made up of baffle plate 6 and buffing pad 7.The transmitting terminal of support platform 4 is provided with the aviation socket 8 of active electric wire, and this aviation socket is connected on the control housing of permanent-magnet linear catapult-launching gear by the aviation plug matched with it.
Ejection platform device 1 is arranged side roll 12, lower rollers 13 and upper roller 14, side roll 12 contacts with the side (B face) of ejection platform stay bearing plate 5, lower rollers 13 contacts with the bottom surface (C face) of ejection platform stay bearing plate 5, upper roller 14 contacts with the end face (A face) of ejection platform stay bearing plate 5, and ejection platform stay bearing plate 5 is embedded in ejection platform device 1.In the process of launching, in order to ensure in the safety of progradation and stability, contacted with the B face of ejection platform stay bearing plate 5 by side roll 12 in ejection platform device 1, lower rollers 13 contacts with the C face of ejection platform stay bearing plate 5, and upper roller 14 contacts with the A face of ejection platform stay bearing plate 5.
As a kind of embodiment, permanent-magnet linear catapult-launching gear also comprises detecting device, detecting device comprises position sensor assembly 16 and magnet steel 51, position sensor assembly comprises and is embedded in the position transduser 161 of ejection platform device 1 and the power supply 162 of position transduser, magnet steel 51 is arranged in ejection platform stay bearing plate 5, the position that magnet steel 51 is installed is corresponding with position transduser 161, namely, on ejection platform stay bearing plate 5 length direction, the projection of position transduser 161 on ejection platform stay bearing plate 5 and magnet steel 51 are on same straight line.
Preferably, the pole span of magnet steel 51 is identical with the secondary pole span of 11,11 ' of permanent-magnetism linear motor.
The working process of permanent-magnet linear catapult-launching gear is as follows: projectile 9 be connected with the ejection platform 15 of ejection platform device 1, by the magnet steel 51 that is embedded in ejection platform stay bearing plate 5 be embedded in the position (namely the position of ejection platform device 1) that position detecting device that ejection platform 15 position sensor assembly 16 forms detects secondary 11 in real time, and the pole span of magnet steel 51 and secondary 11, the pole span of 11 ' is identical, according to position transduser 161 detect position and give permanent-magnetism linear motor elementary 2, the winding of 2 ' passes into three phase current as shown in Figure 6, make the electric current formed armature field that passes into and secondary 11 and 11 ' excitation field interact, produce electromagnetic push, common propelling ejection platform device 1 and projectile 9, when reaching required speed, projectile 9 departs from ejection platform 15 and launches, and meanwhile, control drive current, it is made to produce retrothrust, and under braking device drag effect brake deceleration, stop to during end, then return head end original position to prepare to launch another projectile 9.
Ejection platform 15 adopts the material that intensity is large, density is little, quality is light, and permanent-magnet linear catapult-launching gear adopts short secondary, and long primary scheme, so not only alleviates the weight of ejection platform device 1, and reduces the capacity of the whole system supply energy.
In the above-described embodiments, due to ejection speed quickly, response time must be short, adopts closed loop control to be almost impossible, as preferably, as shown in Figure 5, permanent-magnet linear catapult-launching gear also comprises the elementary drive system for controlling permanent-magnetism linear motor, and drive system adopts H bridge type of drive, and this type of drive is similar to the six state-driven modes that two of brshless DC motor is conducted, the quantity of H bridge is one group or two groups, adopts intersection sectional power supply when the quantity of H bridge is two groups.Preferably, position transduser 161 adopts transmission of wireless signals with the control housing of permanent-magnet linear catapult-launching gear.In the embodiment above, owing to adopting long primary scheme, can not as short primary scheme, direct single hop be adopted to power.In order to improve energy efficiency and voltage utilization, reducing the angle of leakage reactance and reduction energy resource supply capacity, adopting long primary scheme must take the power supply mode of segmentation.Fig. 7 illustrates that elementary 2 are divided into 22 sections of drive schemes, and wherein odd number section is driven by H bridge 0, and even number section is driven by H bridge 1, every section is arranged a switch 17.In practical application, hop count and point segment distance of actual segment depend on the parameters such as the inductance of voltage, electric current and the winding that can provide.
The permanent-magnet linear catapult-launching gear of above embodiment, structure is simple, saves the longitudinal space (namely reducing the length of support platform) launched, and improves the stability of ejection platform device in emission process and safety.Adopt two permanent-magnetism linear motors to advance projectile simultaneously, significantly improve and advance space, improve the efficiency of permanent-magnet linear catapult-launching gear; The modularization of permanent-magnetism linear motor, greatly simplifies processing and the mounting process of parts; Position transduser is embedded the bottom of ejection platform device, and form position detecting device with the magnet steel in ejection platform stay bearing plate, so only need one group of position transduser accurately can detect the position of ejection platform device; Adopt transmission over radio to detect secondary locus, avoid active electric wire Layout Problem, thus improve the positioning precision of ejection platform device further, extend service life; The present embodiment is compared with existing Electromagnetical ejector technology with existing steam catapult, except have employed two permanent-magnetism linear motor unit as driving, and this permanent-magnet linear catapult-launching gear compact conformation, and non-environmental-pollution.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a permanent-magnet linear catapult-launching gear, comprise ejection platform device, permanent-magnetism linear motor and the support platform for supporting described ejection platform device and permanent-magnetism linear motor, described ejection platform device, for placing projectile, is characterized in that:
The elementary of described permanent-magnetism linear motor is arranged in described support platform, the secondary of described permanent-magnetism linear motor is arranged on described ejection platform device, described support platform is provided with the ejection platform stay bearing plate for supporting described ejection platform device, and described ejection platform device can move relative to described ejection platform stay bearing plate on the length direction of described ejection platform stay bearing plate;
The quantity of described permanent-magnetism linear motor is two, be respectively the first permanent-magnetism linear motor and the second permanent-magnetism linear motor, the elementary both sides being symmetricly set on described support platform of elementary and described second permanent-magnetism linear motor of described first permanent-magnetism linear motor, the secondary both sides being symmetricly set on described ejection platform device of secondary and described second permanent-magnetism linear motor of described first permanent-magnetism linear motor.
2. permanent-magnet linear catapult-launching gear according to claim 1, is characterized in that:
The first level length of described permanent-magnetism linear motor is greater than secondary length.
3. permanent-magnet linear catapult-launching gear according to claim 2, is characterized in that:
The elementary of described permanent-magnetism linear motor is modular elementary, and each primary module is made up of coil, elementary iron core and elementary iron core mounting bar;
The secondary of described permanent-magnetism linear motor is modular secondary, and each secondary module is made up of the secondary iron core of permanent magnet and magnetic conduction.
4. permanent-magnet linear catapult-launching gear according to claim 3, is characterized in that:
Also comprise detecting device;
Described detecting device comprises the position transduser being embedded in described ejection platform device, the power supply of described position transduser and the magnet steel that is arranged in described ejection platform stay bearing plate, and the position that described magnet steel is installed is corresponding with described position transduser.
5. permanent-magnet linear catapult-launching gear according to claim 4, is characterized in that:
The pole span of described magnet steel is identical with the secondary pole span of described permanent-magnetism linear motor.
6. permanent-magnet linear catapult-launching gear according to claim 5, is characterized in that:
The control housing of described position transduser and described permanent-magnet linear catapult-launching gear adopts transmission of wireless signals.
7. the permanent-magnet linear catapult-launching gear according to any one of claim 1-6, is characterized in that:
Described ejection platform device arranges side roll, lower rollers and upper roller, described side roll contacts with the side of described ejection platform stay bearing plate, described lower rollers contacts with the bottom surface of described ejection platform stay bearing plate, described upper roller contacts with the end face of described ejection platform stay bearing plate, and described ejection platform stay bearing plate is embedded in described ejection platform device.
8. permanent-magnet linear catapult-launching gear according to claim 7, is characterized in that:
The rear and front end of described support platform is also respectively arranged with shock absorber, and described shock absorber is made up of baffle plate and buffing pad.
9. permanent-magnet linear catapult-launching gear according to claim 7, is characterized in that:
Also comprise the elementary drive system for controlling described permanent-magnetism linear motor, described drive system adopts H bridge type of drive, and the quantity of described H bridge is one group or two groups, adopts intersection sectional power supply when the quantity of described H bridge is two groups.
10. permanent-magnet linear catapult-launching gear according to claim 7, is characterized in that:
The transmitting terminal of described support platform arranges the aviation socket of active electric wire, and this aviation socket is connected on the control housing of described permanent-magnet linear catapult-launching gear by the aviation plug matched with it.
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| CN201310648554.8A CN104691776B (en) | 2013-12-04 | 2013-12-04 | Permanent-magnet linear catapult-launching gear |
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| CN201310648554.8A CN104691776B (en) | 2013-12-04 | 2013-12-04 | Permanent-magnet linear catapult-launching gear |
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Cited By (6)
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| CN105281465A (en) * | 2015-11-03 | 2016-01-27 | 西南交通大学 | Variable-electrode-distance long primary bilateral linear induction motor |
| CN107380476A (en) * | 2017-08-30 | 2017-11-24 | 北京特种机械研究所 | A kind of straight line ejection motor suitable for electromagnetic launch technology of unmanned aerial vehicle |
| CN108445763A (en) * | 2018-03-21 | 2018-08-24 | 东南大学 | Electromagnetic ejection system and control method based on cylinder type flux switching straight line motor |
| CN109094809A (en) * | 2018-09-07 | 2018-12-28 | 佛山皖和新能源科技有限公司 | A kind of transmitting of fixed-wing unmanned plane Electromagnetic Launching sliding rail and its launching technique |
| CN109305381A (en) * | 2018-10-30 | 2019-02-05 | 中国船舶工业系统工程研究院 | A kind of quick power-assisted launching apparatus of unmanned plane cluster |
| WO2020140178A1 (en) * | 2018-12-30 | 2020-07-09 | 中国科学院沈阳自动化研究所 | On-orbit launching apparatus |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105281465A (en) * | 2015-11-03 | 2016-01-27 | 西南交通大学 | Variable-electrode-distance long primary bilateral linear induction motor |
| CN105281465B (en) * | 2015-11-03 | 2018-10-30 | 西南交通大学 | The primary bilateral line inductance electromotor of pole-changing distance |
| CN107380476A (en) * | 2017-08-30 | 2017-11-24 | 北京特种机械研究所 | A kind of straight line ejection motor suitable for electromagnetic launch technology of unmanned aerial vehicle |
| CN107380476B (en) * | 2017-08-30 | 2019-07-05 | 北京特种机械研究所 | A kind of straight line ejection motor suitable for electromagnetic launch technology of unmanned aerial vehicle |
| CN108445763A (en) * | 2018-03-21 | 2018-08-24 | 东南大学 | Electromagnetic ejection system and control method based on cylinder type flux switching straight line motor |
| CN109094809A (en) * | 2018-09-07 | 2018-12-28 | 佛山皖和新能源科技有限公司 | A kind of transmitting of fixed-wing unmanned plane Electromagnetic Launching sliding rail and its launching technique |
| CN109305381A (en) * | 2018-10-30 | 2019-02-05 | 中国船舶工业系统工程研究院 | A kind of quick power-assisted launching apparatus of unmanned plane cluster |
| WO2020140178A1 (en) * | 2018-12-30 | 2020-07-09 | 中国科学院沈阳自动化研究所 | On-orbit launching apparatus |
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