CN201844846U - Double electromagnetic force-based undisturbed air flotation magnetomotive suspension apparatus - Google Patents
Double electromagnetic force-based undisturbed air flotation magnetomotive suspension apparatus Download PDFInfo
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- CN201844846U CN201844846U CN2010201932710U CN201020193271U CN201844846U CN 201844846 U CN201844846 U CN 201844846U CN 2010201932710 U CN2010201932710 U CN 2010201932710U CN 201020193271 U CN201020193271 U CN 201020193271U CN 201844846 U CN201844846 U CN 201844846U
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- suspension apparatus
- mobile jib
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Abstract
The utility model provides a double electromagnetic force-based undisturbed air flotation magnetomotive suspension apparatus. An installing frame is fixed in the middle of a rack, and a lower installing plate of the rack is fixed at the lower part of the rack; two small air bearings for installing two guide rods and a large air bearing for installing a main rod are arranged on the top plate of the installing frame; the large air bearing for installing the main rod is arranged under the base plate of the installing frame; two frictionless air cylinders are symmetrically arranged above the lower installing plate of the rack, and a plurality of piston rods of the frictionless air cylinders are connected with a movable beam; and the movable beam consists of two parts which are symmetrical with each other, the movable beam is provided with the main rod and the two guide rods, an electromagnetic system comprises two long-stroke moving coils and two exciter iron cores, the exciter iron cores are arranged between the base plate and the top plate of the installing frame, and the exciter iron cores are symmetrically arranged at the two sides of the main rod. The double electromagnetic force-based undisturbed air flotation magnetomotive suspension apparatus can effectively eliminate the influence to the vertical movement such as the bending moment, leads the vertical moving parts to work under the undisturbed state, and meets the frictionless requirement.
Description
Technical field
The utility model belongs to the modal test apparatus field, relates in particular to the moving suspension apparatus of a kind of air supporting magnetic.
Background technology
When ultralow frequency test specimen modal test, special low frequency suspension apparatus suspention test specimen must be arranged, its cylinder body hangs frequency should be lower than 1/3～1/5 of the own elasticity natural frequency of test specimen.
When some important test (as the space flight ground test) process need simulation agravic, test process must possess the state of weightlessness that a kind of low frequency suspension apparatus comes imitation specimen, promptly simulates solid propping up-freedom and freedom-free boundary condition by special suspension.
At number of patent application is that suspension apparatus is introduced the moving system of air supporting magnetic and reduced the influence of suspension apparatus to additional stiffness, additional mass and the additional friction moment of test specimen described in the disclosed a kind of air-floating apparatus that air-bearing shafts is applied in vertical frictionless motion field of " air-float magneto motive friction-free suspension device " of CN200710071515.0.
On this basis, though functions such as our electromagnetic force compensation when finding that the moving system of the magnetic of single electromagnetic force output can satisfy conduct active subsystem, vertical direction displacement adjustings.But, it is single that electromagnetic force output will (coil---force transducer---crossbeam) association goes out the effect of additional moment inevitably at the node place, thereby the flexural deformation in the horizontal direction of long head tree is increased, the small amount of deflection that additional moment produces will inevitably influence the serviceability of air-flotation system, especially is embodied on the air-bearing.Air-bearing is a kind of by injecting compressed air in axocoel, produces one deck air film and replaces lubricant, since contactless between spool and the valve pocket, so there is not contact friction force in air bearing.Therefore, the relative motion between air supporting spool and the air supporting valve pocket is replaced with the little air viscous resistance that can not count almost by the viscous resistance of before friction+bigger, and the thickness of air film is usually between 1 to 10 micron.Therefore, production of air bearing generally and installation need quite high precision, equally, the no flexural deformation of a vertical direction motion requires also to propose thereupon, reason is very simple, and promptly small flexural deformation will influence the air film gap, even destroys air film, thereby whole suspension system is in the friction duty is arranged, can't satisfy customer requirements.
Summary of the invention
In order to overcome under the moving suspension apparatus unidirectional electrical magneticaction of existing air supporting magnetic vertical movement to be existed moment of flexure influence, vertical movement parts to be operated in the state of thanksing for your hospitality, can not reach the deficiency that the nothing friction requires, the utility model provides a kind of effective elimination that there is the moment of flexure influence in vertical movement, makes the vertical movement parts be operated in the unperturbed state, satisfies the moving suspension apparatus of the unperturbed air supporting magnetic based on double electromagnetic that the nothing friction requires.
The technical scheme that its technical matters that solves the utility model adopts is:
The moving suspension apparatus of a kind of unperturbed air supporting magnetic based on double electromagnetic, comprise that frame, installation frame, moving beam, guide pole, mobile jib, air-flotation system and magnetic move system, described air-flotation system comprises that two are not had the friction cylinder, described central rack is fixed with installation frame, the bottom is fixed with the frame lower installation board, described installation frame has top board and base plate, and the little air bearing of two installation guide poles is installed above the top board, the big air bearing that mobile jib is installed; The below of base plate is equipped with the big air bearing that mobile jib is installed; The top of frame lower installation board is equipped with two does not symmetrically have the friction cylinder, and the piston rod that does not have the friction cylinder is connected with moving beam; Moving beam is made up of two parts symmetrical, mobile jib and two guide poles are installed on the moving beam, the moving system of described magnetic comprises two long stroke moving-coils and two vibrator iron cores, the endoporus of long stroke moving-coil can be enclosed within on the vibrator iron core with moving up and down, the vibrator iron core is installed between the base plate and top board of described installation frame, and two vibrator iron cores are arranged on the both sides of mobile jib symmetrically.
Described long stroke moving-coil force transducer has two, and long stroke moving-coil force transducer simultaneously is fixed on the side of moving beam, and another side connects long stroke moving-coil mounting bracket.
Technical conceive of the present utility model is: make the moving system of air supporting magnetic head tree be in no diastrophic purpose in growing apart from the guiding process in order to make, the design prolongs with adopting two air supportings of being set forth in " air-float magneto motive friction-free suspension device " identical principle of system of exerting oneself, in " air-float magneto motive friction-free suspension device ", the application that two air supportings go out force mechanisms ideally solved about vertical axes to flexural deformation.Therefore, the design's ultimate principle is: the symmetric design of utilizing the moving system of two magnetic, the electromagnetic force output device of the moving system of magnetic is increased to two by one, with respect to symmetry arrangement before and after the head tree, thereby make head tree be subjected to one group of moment that size is identical, direction is opposite and one group of axial force that size is identical, direction is consistent, make the moving system of air supporting magnetic head tree in growing be in no diastrophic purpose apart from the guiding process thereby reach at same node location.
The beneficial effects of the utility model mainly show: adopt the moving system of two magnetic effectively to eliminate there is the moment of flexure influence in vertical movement, makes the vertical movement parts be operated in the unperturbed state, satisfy and do not have the friction requirement.
Description of drawings
Fig. 1 is based on the structural drawing of the moving suspension apparatus of unperturbed air supporting magnetic of double electromagnetic.
Fig. 2 is the side view of Fig. 1.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
With reference to Fig. 1, Fig. 2, the moving suspension apparatus of a kind of unperturbed air supporting magnetic based on double electromagnetic, comprise that frame, installation frame 8, moving beam 9, guide pole 6, mobile jib 5, air-flotation system and magnetic move system, described air-flotation system comprises that two are not had friction cylinder 12, described central rack is fixed with installation frame 8, the bottom is fixed with the frame lower installation board, described installation frame 8 has top board and base plate, 7, one big air bearing 4 that mobile jib is installed of little air bearing of two installation guide poles are installed above the top board; The below of base plate is equipped with the big air bearing 13 that mobile jib is installed; The top of frame lower installation board is equipped with two does not symmetrically have friction cylinder 12, and the piston rod 11 that does not have the friction cylinder is connected with moving beam 9; Moving beam 9 is made up of two parts symmetrical, mobile jib 5 and two guide poles 6 are installed on the moving beam, the moving system of described magnetic comprises 2,15 and two vibrator iron cores 3,14 of two long stroke moving-coils, the endoporus of long stroke moving-coil can be enclosed within on the vibrator iron core with moving up and down, the vibrator iron core is installed between the base plate and top board of described installation frame, and two vibrator iron cores 3,14 are arranged on the both sides of mobile jib symmetrically.
Described long stroke moving-coil force transducer has two, and long stroke moving-coil force transducer 16 one sides are fixed on the side of moving beam 9, and another side connects the mounting bracket of long stroke moving- coil 2,15.
The piston rod 11 that does not have the friction cylinder connects by being connected hinge 10 with moving beam 9.Not having friction cylinder 12 is communicated with the gas-holder connector.
The course of work of present embodiment is: when the magnetic of two cover symmetries moves system works, produce a pair of equivalent in the same way thrust, the control signal of output is distributed to simultaneously the prime driving amplifier of two vibrator iron cores, make two power output equivalences, because arm of force length is identical, be zero so be applied to that moment in the vertical movement system (two guide poles 6, a principal post 5) disappears mutually.Two electromagnetic force sizes of vertical direction are recorded by two force transducers respectively, the signal of sensor acquisition passes to the simulation amplifier section amplification of master control borad and transfers data to main control chip, these data compare as close-loop feedback data and control panel output control signal, by master control borad output two independent electromagnetic force control simulating signal, overlap independently through two and to export the two-way electromagnetic force coil to behind the power amplifier, thereby form the closed loop of the moving system of magnetic.
Owing to adopted symmetrical expression magnetic to move system, eliminated and hung testing apparatus moment of flexure influence to the vertical movement part under the unidirectional electrical magneticaction, fundamentally solved the problem that vertical movement partly is operated in the state of scratching, make the air supporting film that exists one deck stable between air bearing and air supporting all the time, reach the requirement of equipment working state friction free.
Claims (2)
1. the unperturbed air supporting magnetic based on double electromagnetic moves suspension apparatus, comprise that frame, installation frame, moving beam, guide pole, mobile jib, air-flotation system and magnetic move system, described air-flotation system comprises that two are not had the friction cylinder, described central rack is fixed with installation frame, the bottom is fixed with the frame lower installation board, described installation frame has top board and base plate, and the little air bearing of two installation guide poles is installed above the top board, the big air bearing that mobile jib is installed; The below of base plate is equipped with the big air bearing that mobile jib is installed; The top of frame lower installation board is equipped with two does not symmetrically have the friction cylinder, and the piston rod that does not have the friction cylinder is connected with moving beam; Moving beam is made up of two parts symmetrical, mobile jib and two guide poles are installed on the moving beam, it is characterized in that: the moving system of described magnetic comprises two long stroke moving-coils and two vibrator iron cores, the endoporus of long stroke moving-coil can be enclosed within on the vibrator iron core with moving up and down, the vibrator iron core is installed between the base plate and top board of described installation frame, and two vibrator iron cores are arranged on the both sides of mobile jib symmetrically.
2. the moving suspension apparatus of the unperturbed air supporting magnetic based on double electromagnetic as claimed in claim 1, it is characterized in that: long stroke moving-coil force transducer has two, long stroke moving-coil force transducer simultaneously is fixed on the side of moving beam, and another side connects long stroke moving-coil mounting bracket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201932710U CN201844846U (en) | 2010-05-18 | 2010-05-18 | Double electromagnetic force-based undisturbed air flotation magnetomotive suspension apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201932710U CN201844846U (en) | 2010-05-18 | 2010-05-18 | Double electromagnetic force-based undisturbed air flotation magnetomotive suspension apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201844846U true CN201844846U (en) | 2011-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201932710U Expired - Lifetime CN201844846U (en) | 2010-05-18 | 2010-05-18 | Double electromagnetic force-based undisturbed air flotation magnetomotive suspension apparatus |
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| Country | Link |
|---|---|
| CN (1) | CN201844846U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101839731A (en) * | 2010-05-18 | 2010-09-22 | 浙江工业大学 | Undisturbed air-flotation magnetomotive suspension device based on double electromagnetic forces |
-
2010
- 2010-05-18 CN CN2010201932710U patent/CN201844846U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101839731A (en) * | 2010-05-18 | 2010-09-22 | 浙江工业大学 | Undisturbed air-flotation magnetomotive suspension device based on double electromagnetic forces |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110525 Effective date of abandoning: 20120523 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20110525 Effective date of abandoning: 20120523 |