CN109946811B - Quick-response double-view-field switching mechanism - Google Patents
Quick-response double-view-field switching mechanism Download PDFInfo
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- CN109946811B CN109946811B CN201910185920.8A CN201910185920A CN109946811B CN 109946811 B CN109946811 B CN 109946811B CN 201910185920 A CN201910185920 A CN 201910185920A CN 109946811 B CN109946811 B CN 109946811B
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Abstract
The invention provides a fast-response double-view-field switching mechanism, which aims to solve the problem that the conventional switching mechanism cannot meet the requirements of fast switching and a missile-borne severe mechanical environment. The mechanism comprises a driving component and a limiting component; the driving assembly comprises a rotary electromagnet, a base and a swinging shaft; the rotary electromagnet is arranged on the base through an electromagnet support, an output shaft of the rotary electromagnet is fixedly connected with a swinging shaft, and one end of the swinging shaft is fixedly connected with a zoom lens group; the limiting component comprises a magnetic locking unit and a mechanical locking unit; the magnetic locking unit comprises a ferromagnetic seat and a power-losing type electromagnet, the ferromagnetic seat is arranged on the swinging shaft, the power-losing type electromagnet is arranged on the electromagnet support, and the power-losing type electromagnet is matched with the ferromagnetic seat to lock the swinging shaft; the mechanical locking unit comprises a spring plunger and a conical ball socket structural member, and the spring plunger is arranged on the swinging shaft; the conical ball socket structural member is matched with the spring plunger to lock the swinging shaft.
Description
Technical Field
The invention relates to the field of missile-borne double-view-field infrared imaging load, in particular to a fast-response double-view-field switching mechanism.
Background
The switching modes of large/small fields of view in the existing double-field infrared optical system are mainly divided into two types: the axial zoom lens group and the compensation lens group are used for changing the focal length value of the optical system to realize the switching of different view fields, the axial zoom form has longer switching time and more complex assembly and adjustment, and the number of lenses participating in imaging is more, so that the imaging quality and the transmittance of the system are affected to a certain extent; the other is to switch different view fields by switching in/out the zoom lens group in the optical system, the radial zoom form usually adopts a servo motor as a driving element, and the servo motor is positioned by a position sensor, so that the quick switching of the view fields cannot be completed due to the fact that the electric time constant of the servo motor is large and the starting is slow, the tracking target is easy to lose during the switching of the view fields, and secondly, the limit form cannot meet the requirements due to the severe missile-borne mechanical environment. Therefore, the design of the fast-response and high-stability double-view-field switching mechanism suitable for the missile-borne environment has great practical significance.
Disclosure of Invention
The invention provides a fast-response double-view-field switching mechanism adopting a rotary electromagnet as a driving element, which can realize fast zooming, and can adapt to a mechanical environment with severe missile-borne conditions by adopting the limiting modes of an electric limiting mechanism, a mechanical limiting mechanism and a magnetic locking mechanism and a mechanical locking mechanism so as to solve the problem that the conventional switching mechanism cannot meet the requirements of fast switching of view fields and severe missile-borne mechanical conditions.
The technical scheme of the invention is as follows:
a fast-response double-view-field switching mechanism comprises a driving assembly and a limiting assembly; the driving assembly comprises a rotary electromagnet, a base, an electromagnet support and a swinging shaft; the rotary electromagnet is arranged on the base through an electromagnet support, an output shaft of the rotary electromagnet is fixedly connected with a swinging shaft, and one end of the swinging shaft is fixedly connected with a zoom lens group; the limiting assembly comprises a magnetic locking unit and a mechanical locking unit; the magnetic locking unit comprises a ferromagnetic seat and at least two groups of power-losing type electromagnets, the ferromagnetic seat is arranged on the swinging shaft, the power-losing type electromagnets are arranged on the electromagnet support and are respectively positioned on two sides of the ferromagnetic seat, and the power-losing type electromagnets are matched with the ferromagnetic seat to lock the swinging shaft; the mechanical locking unit comprises a spring plunger and a conical ball socket structural member, the spring plunger is arranged on the swinging shaft and comprises a ball, a spring, a shell and a locking nut, a mounting cavity is arranged in the shell, the front end of the cavity is conical, and the locking nut compresses the ball at the front end of the cavity through the spring; the conical ball socket structural member is fixed on the base, and is provided with a concave groove, and the ball is matched with the concave groove to lock the swing shaft.
Further, the driving assembly further comprises a balancing weight, the balancing weight is arranged at the other end of the swinging shaft, and the middle part of the swinging shaft is fixedly connected with the output shaft of the rotary electromagnet. The balancing weight is added to enable the main inertia axis of the gravity center of the variable-magnification lens group to coincide with the rotation axis, and unbalanced centrifugal force during the switching-in/switching-out of the variable-magnification lens group is reduced, so that the variable-magnification lens group moves stably.
Further, the limiting component further comprises a mechanical limiting unit, the mechanical limiting unit comprises a damping pad and a limiting block, the limiting block is fixedly arranged on the swinging shaft and located on two sides of the ferromagnetic base, the damping pad is arranged on the electromagnet support and located on one side of the power-losing type electromagnet, and the damping pad is matched with the limiting block and used for reducing impact of the ferromagnetic base and the power-losing type electromagnet.
Further, the material of the shock pad is polyurethane.
Further, the limit assembly further comprises an electric limit unit, the electric limit unit comprises a limit switch and a switch baffle, the switch baffle is arranged on the swinging shaft, the limit switch is arranged on the electromagnet support, and the limit switch is a proximity switch or a photoelectric switch.
Further, an output shaft of the rotary electromagnet is arranged in a bearing seat through a bearing, a bearing end cover is arranged at the tail end of the output shaft, and the bearing seat is fixedly arranged on the electromagnet support.
Further, the bearings are a pair of angle contact bearings and are mounted back to back, and the pairing mode can ensure that the bearings can bear multiple forward and reverse angle stresses from the axial direction and the radial direction.
Further, the power-losing type electromagnet is arranged on the electromagnet support through the support frame, and an electromagnet gasket is arranged between the power-losing type electromagnet and the support frame.
Further, the ferromagnetic base is an iron-nickel base.
Further, a load adjusting nut is arranged between the locking nut and the spring.
Compared with the prior art, the invention has the beneficial effects that:
1. compared with the servo motor, the rotary electromagnet in the double-view-field switching mechanism has shorter electrical time constant, can quickly reach peak speed after being electrified, basically has unchanged output moment within the range of-45 ℃ to 60 ℃, can realize 0.3s quick zooming through testing, and can adapt to the high impact mechanical environment with bad missile loading.
2. The magnetic locking unit in the double-view-field switching mechanism plays a role in positioning and locking after the zoom lens group is switched in/out in place, adopts a form of pairing the power-losing type electromagnet and the ferromagnetic base, and has the advantages of small volume, large magnetic force, low power consumption, impact resistance and the like.
3. The mechanical locking unit in the double-view-field switching mechanism plays a role in double positioning and locking, and can adapt to the severe large-impact mechanical environment of missile-borne.
4. The shock pad and the limiting block in the double-view-field switching mechanism belong to mechanical limiting units, and the polyurethane shock pad not only has the limiting function, but also can relieve the impact of the zoom lens group.
5. The electric limiting unit in the double-view-field switching mechanism adopts the photoelectric switch, has the advantages of small volume and high sensitivity, and feeds back signals to the electromagnet after triggering.
Drawings
FIG. 1 is a block diagram of an infrared optical imaging system;
FIG. 2 is an isometric view of a fast-response dual-field switching mechanism of the present invention;
FIG. 3 is a front view of the fast response dual field-of-view switching mechanism of the present invention;
FIG. 4 is a left side view of the fast response dual field-of-view switching mechanism of the present invention;
FIG. 5 is an enlarged view of a portion of the mechanical locking mechanism of FIG. 4;
FIG. 6 is an isometric view of a fast-response dual-field switching mechanism (with parts omitted) of the present invention;
FIG. 7 is a cross-sectional view of a spring plunger of the fast-response dual-field-of-view switching mechanism of the present invention;
FIG. 8 is a block diagram of the fast response dual field-of-view switching mechanism of the present invention omitting the ferromagnetic mount;
fig. 9 is a front view of the fast response dual field switching mechanism of the present invention omitting the variable magnification lens assembly.
Reference numerals: the device comprises a 1-window glass, a 2-spectroscope, a 3-spectroscope, a 4-long wave infrared optical objective lens group, a 5-medium wave infrared optical objective lens group, a 6-long wave infrared detector group and a 7-medium wave infrared detector group; 8-rotating electromagnet, 9-electromagnet support, 10-bearing seat, 11-balancing weight, 12-bearing, 13-swinging shaft, 14-bearing end cover, 15-zoom lens group, 16-base, 17-supporting frame, 18-electromagnet gasket, 19-power-losing type electromagnet, 20-ferromagnetic seat, 29-limit switch, 30-switch baffle, 24-shock pad, 25-limiting block, 31-spring plunger, 32-stop screw, 33-conical ball socket structure, 35-ball, 36-spring, 37-shell, 38-load adjusting nut, 39-lock nut and 40-bearing gasket.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The infrared optical imaging system comprises an infrared optical objective lens assembly, an infrared detector assembly and an electric control assembly, wherein the infrared optical objective lens assembly is structurally divided into four module assemblies, namely window glass, a beam splitting assembly, a long-wave infrared optical objective lens assembly and a medium-wave infrared optical objective lens assembly. The medium-wave infrared optical objective lens component is a fixed focus optical objective lens component, and the long-wave infrared optical objective lens component is a double-view-field zooming component. As shown in fig. 1, the infrared optical imaging system mainly comprises a window glass 1, a spectroscope 2, a beam splitting component 3, a long-wave infrared optical objective lens group 4, a medium-wave infrared optical objective lens group 5, a long-wave infrared detector group 6 and a medium-wave infrared detector group 7; the intermediate-wave infrared optical objective lens component 5 is a fixed focus optical objective lens component, and the long-wave infrared optical objective lens component 4 is a double-view-field zooming component.
The long-wave infrared double-view-field zooming assembly enables the zoom lens group to realize cutting-in and cutting-out through the double-view-field switching mechanism. The dual-view switching mechanism comprises a driving assembly and a limiting assembly. The driving assembly mainly comprises a rotary electromagnet 8, an electromagnet support 9, a driving shaft system and the like, wherein the driving shaft system mainly comprises a pair of P4-precision angular contact ball bearings 12, a bearing seat 10, a bearing end cover 14, a zoom lens group 15 and the like. The rotation shaft of the zoom lens group 15 and the output shaft of the rotary electromagnet 8 are fastened by two hexagon socket screws M2.5. A pair of angular contact ball bearings 12 in the drive shaft system are in a back-to-back mating manner, which ensures that the bearings 12 are capable of withstanding multiple forward and reverse angular stresses from both axial and radial directions. The bearing gasket 40 of the bearing seat 10 and the bearing end cover 14 is trimmed to achieve the aim of preloading the bearing 12, the main aim of the bearing 12 preload design is to eliminate axial and radial play of the bearing 12, reduce rotation noise, and distribute the born stress to each ball 35 to the greatest extent so as to increase the load capacity, thereby ensuring the accuracy of the shaft system and the service life of the bearing 12.
The limiting component of the long-wave infrared double-view-field zooming component mainly adopts a combination form of electric limiting, mechanical limiting, magnetic locking mechanisms and mechanical locking mechanisms. And a set of electric limiting, mechanical limiting, magnetic locking mechanism and mechanical locking mechanism are arranged at the cutting-in position and the cutting-out position of the zoom lens group 15 and used for limiting two working conditions. Wherein the electric limit adopts a proximity switch or a photoelectric switch; polyurethane damping materials are adopted for mechanical limit; the magnetic locking mechanism adopts a combination mode of the power-losing type electromagnet 19 and the iron-nickel alloy seat, the power-losing type electromagnet 19 is electrified to lose magnetic force, and the magnetic force is recovered after the power-losing type electromagnet 19 is powered on only in the field switching process, so that the power-losing type electromagnet 19 can be powered off and locked after the field switching is finished, and the power consumption is reduced; the mechanical locking mechanism is in the form of a combination of a spring plunger 31 with a variable load and a conical ball and socket structure 33, and the load capacity of the plunger can be changed by adjusting the pretightening force of a spring 36 of the spring plunger 31.
The fast response dual field of view switching mechanism shown in fig. 2-9 includes a drive assembly and a limit assembly.
The driving assembly comprises a rotary electromagnet 8, a base 16, a balancing weight 11, an electromagnet support 9 and a swinging shaft 13; the rotary electromagnet 8 is arranged on the base 16 through the electromagnet support 9, an output shaft of the rotary electromagnet is fixedly connected with the swinging shaft 13, and one end of the swinging shaft 13 is fixedly connected with the zoom lens group 15; the output shaft of the rotary electromagnet 8 is arranged in a bearing seat 10 through a bearing 12, the tail end of the output shaft is provided with a bearing end cover 14, the bearing seat 10 is fixedly arranged on an electromagnet support 9, and the bearing 12 is a pair of P4-precision angular contact ball bearings 12 and is arranged back to back. The balancing weight 11 is arranged at the other end of the swinging shaft 13, the middle part of the swinging shaft 13 is fixedly connected with the output shaft of the rotary electromagnet 8, the balancing weight 11 is added to enable the main inertia axis of the gravity center of the variable-magnification lens group 15 to coincide with the rotation axis, and unbalanced centrifugal force during the cutting-in/cutting-out of the variable-magnification lens group 15 is reduced, so that the variable-magnification lens group 15 moves stably.
The limiting assembly comprises a magnetic locking unit, a mechanical limiting unit and an electric limiting unit.
The magnetic locking unit comprises a ferromagnetic seat 20 and at least two groups of power-losing type electromagnets 19, the ferromagnetic seat 20 is arranged on the swinging shaft 13, the power-losing type electromagnets 19 are arranged on the electromagnet support 9 and are respectively positioned on two sides of the ferromagnetic seat 20, and the power-losing type electromagnets 19 and the ferromagnetic seat 20 are matched to realize locking of the swinging shaft 13; the power-losing type electromagnet 19 is arranged on the electromagnet support 9 through the support frame 17, an electromagnet gasket 18 is arranged between the power-losing type electromagnet 19 and the support frame 17, and the ferromagnetic seat 20 is specifically an iron-nickel alloy seat.
The mechanical locking unit comprises a spring plunger 31 and a conical ball socket structure member 33, the spring plunger 31 with a variable load is arranged on the swinging shaft 13 through a stop screw 32 and comprises a ball 35, a spring 36, a shell 37 and a locking nut 39, a mounting cavity is arranged in the shell 37, the front end of the cavity is conical, and the locking nut 39 compresses the ball 35 at the front end of the cavity through the spring 36; the conical ball socket structure 33 is provided with a concave groove, and the ball 35 is matched with the concave groove to lock the swing shaft 13. A load adjusting nut 38 is further arranged between the locking nut 39 and the spring 36, the load adjusting nut 38 compresses the spring 36, the pretightening force of the spring 36 is changed by changing the compression deformation amount of the spring 36, the pretightening force of the spring plunger 31 is changed, after the load of the plunger is adjusted, the locking nut 39 is used for locking, and the load adjusting nut 38 is prevented from loosening.
The mechanical limiting unit comprises a shock pad 24 and a limiting block 25, the limiting block 25 is fixedly arranged on the swinging shaft 13 and located on two sides of the ferromagnetic base 20, the shock pad 24 is arranged on the electromagnet support 9 and located on one side of the power-losing type electromagnet 19, and the shock pad 24 is matched with the limiting block 25 and used for reducing impact of the ferromagnetic base 20 and the power-losing type electromagnet 19, and the shock pad 24 can be made of polyurethane shock-absorbing materials.
The electric limit unit comprises a limit switch 29 and a switch baffle 30, the switch baffle 30 is arranged on the swinging shaft 13, the limit switch 29 is arranged on the electromagnet support 9, and the limit switch 29 is a proximity switch or a photoelectric switch.
The invention also provides a working flow of the quick-response double-view-field switching mechanism when the zoom lens group 15 is switched in/out;
1) Cutting-in working condition of zoom lens group
When the zoom lens group 15 is switched from the cut-out working condition to the cut-in working condition, the power-off type electromagnets 19 at the two ends of the limiting assembly are simultaneously electrified, at the moment, the magnetic force of the electromagnets disappears, and meanwhile, the rotary electromagnet 8 is connected with high voltage to generate torque so as to break away from the mechanical locking mechanism, thereby driving the zoom lens group 15 to rotate and cut in. When the photoelectric switch baffle 30 fixedly connected to the variable-magnification lens group 15 blocks the photoelectric switch, the rotary electromagnet 8 drops to low voltage, and a first re-locking is provided for positioning and locking the variable-magnification lens group 15; the variable-magnification lens group 15 touches the mechanical limit, and the mechanical limit is made of polyurethane damping material to relieve the impact of the variable-magnification lens group 15, so that the balls of the spring plunger 31 on the variable-magnification lens group 15 are clamped into the conical ball socket under the inertia action, and the mechanical locking mechanism is locked to provide a second locking for positioning and locking the variable-magnification lens group 15; meanwhile, the electromagnet is powered off to generate magnetic force, so that the magnetic locking mechanism is locked to provide third locking for positioning and locking the zoom lens group 15. The triple locking locks the variable magnification lens group 15, and the cutting-in of the variable magnification lens group 15 is completed at this time.
2) Cutting working condition of zoom lens group
The working procedure of the cut-out working condition of the zoom lens group 15 is similar to that of the cut-in working condition of the zoom lens group 15, firstly, the power-losing type electromagnets 19 at the two ends of the limiting assembly are simultaneously electrified, at the moment, the magnetic force of the electromagnets disappears, and meanwhile, the rotary electromagnet 8 is connected with high voltage to generate torque so as to break away from the mechanical locking mechanism, and thus the zoom lens group 15 is driven to rotate and cut out. When the photoelectric switch baffle 30 fixedly connected to the variable-magnification lens group 15 blocks the photoelectric switch, the rotary electromagnet 8 drops to low voltage, and a first re-locking is provided for positioning and locking the variable-magnification lens group 15; the variable-magnification lens group 15 touches the mechanical limit, and the mechanical limit is made of polyurethane damping material to relieve the impact of the variable-magnification lens group 15, so that the balls of the spring plunger 31 on the variable-magnification lens group 15 are clamped into the conical ball socket under the inertia action, and the mechanical locking mechanism is locked to provide a second locking for positioning and locking the variable-magnification lens group 15; meanwhile, the electromagnet is powered off to generate magnetic force, so that the magnetic locking mechanism is locked to provide third locking for positioning and locking the zoom lens group 15. The triple locking locks the variable magnification lens group 15, and cutting out of the variable magnification lens group 15 is completed at this time.
The invention also provides an assembly method of the rapid-response double-view-field switching mechanism, which comprises the following steps:
1) The rotary electromagnet 8 is fixedly connected with the electromagnet support 9 through 3M 4 countersunk screws;
2) The bearing seat 10 is fixed on the electromagnet support 9 through 4M 3 pan head screws;
3) The photoelectric switch is fixed on the electromagnet support 9 through 2M 2 pan head screws;
4) The electromagnet gasket 18 and the power-off electromagnet 19 are sequentially fixed on the support frame 17 through 1M 4 pan head screw, and the polyurethane shock pad 24 is fixed on the support frame 17 through 1M 4 pan head screw;
5) The balancing weight 11 is fixed on the variable magnification lens group 15 through 4 inner hexagon screws of M3;
6) Fixing the iron-nickel alloy seat 24 on the zoom lens group 15 through 4M 3 pan head screws;
7) The limiting block 25 is fixed on the variable-magnification lens group 15 through 2 inner hexagon screws of M3;
8) The photoelectric switch baffle 30 is fixed on the zoom lens group 15 through 1M 2 countersunk head screw;
9) The spring plunger 31 of the load variable type is screwed into the magnification-varying lens group 15, and the spring plunger 31 is fixed by the stopper screw 32;
10 2M 3 pan head screws to fix the conical ball socket structure 33 to the base 16;
11 4M 3 pan head screws are used to fix the electromagnet support 9 on the base 16;
12 3M 3 pan head screws are used to fix the support 17 on the electromagnet support 9;
13 The angular contact ball bearings 12, the variable magnification lens group 15 and the angular contact ball bearings 12 are sequentially arranged on the bearing seat 10, the two angular contact ball bearings adopt a back-to-back pairing mode, and the variable magnification lens group 15 is fixedly connected to the swing shaft 13 of the rotary electromagnet 8 through two inner hexagon screws of M2.5;
14 The photoelectric switch baffle 30 triggers the photoelectric switch to work when the zoom lens group 15 cuts into the long-wave infrared optical objective lens component 4 by adjusting the position of the photoelectric switch;
15 The electromagnet 19 is contacted with the iron-nickel alloy seat when the photoelectric switch is triggered to work by trimming the electromagnet gasket 18 and the limiting block 25, and the limiting block 25 is contacted with the polyurethane shock pad 24;
16 By adjusting the position of the conical ball socket structure 33, the ball 35 of the spring plunger 31 with variable load is clamped into the conical ball socket of the conical ball socket structure 33 when the photoelectric switch is triggered to work;
17 By adjusting the load adjusting nut 38 of the spring plunger 31, the zoom lens group 15 can be locked under the mechanical environment, and simultaneously the cut-in/cut-out function can be realized under the action of the rotary electromagnet 8, and the load adjusting nut 38 is locked through the locking nut 39 after being adjusted.
Claims (10)
1. A quick-response double-view-field switching mechanism is characterized in that: comprises a driving component and a limiting component;
the driving assembly comprises a rotary electromagnet (8), an electromagnet support (9), a base (16) and a swinging shaft (13); the rotary electromagnet (8) is arranged on the base (16) through the electromagnet support (9), an output shaft of the rotary electromagnet is fixedly connected with the swinging shaft (13), and one end of the swinging shaft (13) is fixedly connected with the zoom lens group (15);
the limiting assembly comprises a magnetic locking unit and a mechanical locking unit;
the magnetic locking unit comprises a ferromagnetic seat (20) and at least two groups of power-losing type electromagnets (19), wherein the ferromagnetic seat (20) is arranged on a swinging shaft (13), the power-losing type electromagnets (19) are arranged on an electromagnet support (9) and are respectively positioned on two sides of the ferromagnetic seat (20), and the power-losing type electromagnets (19) are matched with the ferromagnetic seat (20) to lock the swinging shaft (13);
the mechanical locking unit comprises a spring plunger (31) and a conical ball socket structural member (33), the spring plunger (31) is arranged on the swinging shaft (13) and comprises a ball (35), a spring (36), a shell (37) and a locking nut (39), a mounting cavity is arranged in the shell (37), the front end of the cavity is conical, and the locking nut (39) compresses the ball (35) at the front end of the cavity through the spring (36); the conical ball socket structural member (33) is fixed on the base (16) and is provided with a concave groove, and the ball (35) is matched with the concave groove to lock the swing shaft (13).
2. The fast response dual field of view switching mechanism of claim 1, wherein: the driving assembly further comprises a balancing weight (11), the balancing weight (11) is arranged at the other end of the swinging shaft (13), and the middle part of the swinging shaft (13) is fixedly connected with the output shaft of the rotary electromagnet (8).
3. The fast response dual field of view switching mechanism of claim 2, wherein: the limiting assembly further comprises a mechanical limiting unit, the mechanical limiting unit comprises a shock pad (24) and a limiting block (25), the limiting block (25) is fixedly arranged on the swinging shaft (13) and located on two sides of the ferromagnetic base (20), the shock pad (24) is arranged on the electromagnet support (9) and located on one side of the power-losing type electromagnet (19), and the shock pad (24) is matched with the limiting block (25) and used for reducing impact of the ferromagnetic base (20) and the power-losing type electromagnet (19).
4. A fast response dual field of view switching mechanism as set forth in claim 3 wherein: the material of the shock pad (24) is polyurethane.
5. The fast response dual field of view switching mechanism as claimed in any one of claims 1 to 4, wherein: the limit assembly further comprises an electric limit unit, the electric limit unit comprises a limit switch (29) and a switch baffle (30), the switch baffle (30) is arranged on the swinging shaft (13), the limit switch (29) is arranged on the electromagnet support (9), and the limit switch (29) is a proximity switch or a photoelectric switch.
6. The fast response dual field of view switching mechanism of claim 5, wherein: the output shaft of the rotary electromagnet (8) is arranged in a bearing seat (10) through a bearing (12), the tail end of the output shaft is provided with a bearing end cover (14), and the bearing seat (10) is fixedly arranged on an electromagnet support (9).
7. The fast response dual field of view switching mechanism of claim 6, wherein: the bearings (12) are a pair of angular contact bearings and are mounted back-to-back.
8. The fast response dual field of view switching mechanism of claim 7, wherein: the power-losing type electromagnet (19) is arranged on the electromagnet support (9) through the support frame (17), and an electromagnet gasket (18) is arranged between the power-losing type electromagnet (19) and the support frame (17).
9. The fast response dual field of view switching mechanism of claim 8, wherein: the ferromagnetic seat (20) is an iron-nickel alloy seat.
10. The fast response dual field of view switching mechanism of claim 9, wherein: a load adjusting nut (38) is arranged between the lock nut (39) and the spring (36).
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| CN201910185920.8A CN109946811B (en) | 2019-03-12 | 2019-03-12 | Quick-response double-view-field switching mechanism |
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| CN201910185920.8A CN109946811B (en) | 2019-03-12 | 2019-03-12 | Quick-response double-view-field switching mechanism |
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| CN111650805B (en) * | 2020-05-21 | 2021-03-19 | 中国科学院西安光学精密机械研究所 | Double-view-field quick switching device and method based on rotary electromagnet switching mechanism |
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