CN110518328A - A kind of spaceborne radar antenna and its expansion hinge used - Google Patents
A kind of spaceborne radar antenna and its expansion hinge used Download PDFInfo
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- CN110518328A CN110518328A CN201910926616.4A CN201910926616A CN110518328A CN 110518328 A CN110518328 A CN 110518328A CN 201910926616 A CN201910926616 A CN 201910926616A CN 110518328 A CN110518328 A CN 110518328A
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
- F16C11/10—Arrangements for locking
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/08—Means for collapsing antennas or parts thereof
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/08—Means for collapsing antennas or parts thereof
- H01Q1/084—Pivotable antennas
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Abstract
The present invention provides a kind of spaceborne radar antenna and its expansion hinges used, belong to microwave product manufacturing field, hinge is cut with scissors and locked including hook, the hook hinge is fixed on antenna base, the hook hinge is connect with the radial rib of antenna, the side of lock hinge lower end is hinged on the upper end of the hook hinge, the other side is equipped with and is installed with slideway, the lower end of the hinged lock hook in lower end of the hook hinge, the upper end of the lock hook is equipped with lock shaft, the lock shaft is bonded setting with the slideway under the action of first leaf spring, the sliding is equipped with lock slots, in the case where lock state is unfolded, the lock shaft is located in the lock slots, the side of the hook hinge is equipped with to connect the hook hinge and lock and twists and twist the wind spring for generating pretension to the lock.The present invention is suitable for satellite-borne synthetic aperture radar umbrella-type net-shape antenna, has expansion and lock function, be with lightweight, low cost, high-precision unfolding mechanism, and it is small in size.
Description
Technical field
The invention belongs to microwave product manufacturing field, it is related to a kind of unfolding mechanism, more particularly to a kind of applied to spaceborne conjunction
At the lightweight for having expansion and lock function, low cost, high-precision unfolding mechanism of aperture radar umbrella formula net-shape antenna.
Background technique
Synthetic aperture radar (SAR) is a kind of high-resolution imaging radar, can be under the extremely low meteorological condition of visibility
Obtain similar photo-optical high resolution radar image.Using the relative motion of radar and target the lesser real antenna of size
The method of aperture data processing synthesizes the radar in a biggish equivalent aerial aperture, also referred to as synthetic aperature radar.Synthetic aperture
The characteristics of radar is high resolution, and energy all weather operations can efficiently identify camouflage and penetrate cloak.
For the growth requirement of certain model satellite-borne synthetic aperture radar, need to develop it is a kind of it is light-weight, collapse small in size, expansion
Big, the high-efficient umbrella-type unfolded reticular antenna of bore, in recent years, undergoing an unusual development for the causes such as earth observation, space communication is fast
Suddenly, the demand of the space deployable antenna mechanism high to lightweight, large scale, geometrical stability greatly increases, spaceborne exhibition
Antenna mechanism is opened to start to develop to enlargement, large direction., therefore there is an urgent need to innovative design folding and unfolding mechanism configuration, solutions
Certainly enlargement and the rigidity of structure, light-weighted contradiction, deployable antenna is mainly by pedestal, central entity reflecting surface, radial rib, anti-
Penetrate the compositions such as net, expansion hinge, multi-beam feedback sources.
Wherein be unfolded hinge effect be connection pedestal and radial rib, provide radial rib be unfolded torque and by radial rib it is reliable
Locking on a predetermined position, while after locking, keeps certain tension to radial rib, makes the reflector net for being laid on radial rib
A smooth, tensioned, stable paraboloid is constituted, it is therefore desirable to which hinge, which is unfolded, has certain precision of expansion and rigidity, together
When need in view of single set antenna to include 45 sets expansion hinges and the feature that product space is limited, previous space linkage
In, connection and support of the bearing as rotary part are used mostly, due to being required to adapt to the customization bearing of space environment,
Product cost is high, is unable to satisfy model demand.
Summary of the invention
The problem to be solved in the present invention is to be to provide a kind of spaceborne radar antenna and its expansion hinge used, is suitable for
Satellite-borne synthetic aperture radar umbrella-type net-shape antenna, has expansion and lock function, is with lightweight, low cost, high-precision exhibition
Opening mechanism, and it is small in size.
In order to solve the above technical problems, the technical solution adopted by the present invention is that: a kind of spaceborne radar antenna and its used
Hinge, including hook hinge and lock hinge is unfolded, the hook hinge is fixed on antenna base, and the hook hinge is connect with the radial rib of antenna,
The side of lock hinge lower end is hinged on the upper end of the hook hinge, and the other side, which is equipped with, is installed with slideway, the lower end hinge of the hook hinge
Connect the lower end of lock hook, the upper end of the lock hook is equipped with lock shaft, the lock shaft under the action of first leaf spring with the slideway
Fitting setting, the sliding are equipped with lock slots, and in the case where lock state is unfolded, the lock shaft is located in the lock slots, described
The side of hook hinge is equipped with to connect the hook hinge and lock and twists and twist the wind spring for generating pretension to the lock.
Further, the wind spring is plane scroll spring, and the hook hinge and lock strand are hinged by shaft, the wind spring
Inner ring covers pin joint on axis by inner end, and the interior end cap is equipped with far from the side that the hook is cut with scissors and presses on the outside of the wind spring
The internal gland covered, outer ring are fixed on outer end and put on, and the outer end is set in the outer ring of outer end axis, and the outer end axis is vertically solid
It is scheduled on the lock and twists the side far from shaft, the outer end axis is equipped with far from the side of the lock hinge and carries out on the outside of the wind spring
The outer press cover of positioning.
Further, it is connected between the shaft and hook hinge by multiple pins, multiple pin holes are relatively described
The axis of shaft is uniformly arranged, and the other end of the shaft is fixed by the gland and nut of T-type and hook hinge, the internal pressure
Lid is one end that groove profile and lid are located at the interior end cap.
Further, the lock twists the middle part for being hinged on the hook hinge between two parties, the two sides of the lock hinge thickness and the hook
Lubricating pad is equipped between hinge, the distance between two described lubrications are equal to the width that the lock twists and clearance fit between the two,
The lock is twisted is equipped with self lubrication bearing between the shaft.
Further, relatively hinged setting, the lock hook are cut with scissors by lock shaft and the hook in the lower end of the lock hook
Upper end be U-shaped, the lock shaft is erected at the upper end of the lock hook, in the case where lock state be unfolded, hook hinge with lock strand
Between locking angle be not less than 90 degree.
Further, the slideway is sector, and the slideway is embedded between two parties in the lower end side of the latch hook, the slideway
The lubrication groove of indent, under rounding state, the lower end of the slideway and the lock are equipped with the middle part of lock shaft cooperation one side
Axis contact setting.
Further, first reed is " check mark " shape, and first reed upper end is contacted with the lock hook line
And it is equipped with rolling of extending outward, and first reed is provided with the second reed far from the side fitting of lock hook, and described the
Two reeds are " check mark " shape, and first reed and the second reed overlapping pass through pressing plate and the fixed company of hook hinge after being arranged
It connects.
Further, the lock strand is Y shape, and the upper end that the lock twists is set there are two the fixing axle connecting with radial rib,
The fixing axle is fixedly connected by long set nut with lock strand, and the lock, which twists, is equipped with the first lightening hole.
Further, the upper end of the hook hinge is equipped with the second lightening hole, and lower end is equipped with third lightening hole, and the hook hinge is L
Shape, the hook hinge are fixed on antenna base by multiple groups screw and the cooperation of short set nut.
Hinge is unfolded using it in a kind of spaceborne radar antenna.
Compared with prior art, the present invention has the advantage that as follows with good effect.
1, the present invention changes connects using bearing as rotation mostly in the rotation axis system between previous hook hinge and lock hinge
The structure with support is connect, each hinge movement has independence during the antenna expansion in the application, and linkage is simultaneously not required to
Self lubrication bearing is used in the rotation axis system between hook hinge and lock hinge and lubricating pad is made relative to axial swing, therefore
For its connection and support, this structure is contacted since hook is cut with scissors between lock hinge for line, so that linkage itself is only around the shaft
Unique freedom degree of rotation has under the premise of guaranteeing to be unfolded hinge flexible rotating and resists lock hinge well relative to axial pendulum
Dynamic ability；
2, self lubrication bearing and lubricating pad are used in the rotation axis system between hook hinge and lock hinge as its connection and support,
Instead of traditional bearing arrangement, it is more suitable for being suitable for space layout, structure is more compact, and saves high-accuracy bearing
Cost, product development cost is greatly reduced；
3, by reasonable structure optimization, so that this structure body is small and exquisite, lightweight, single hinge weight that covers is only 170-175g,
But the torsional rigidity after hinge locking can reach the 420Nm/rad of user's requirement, while pre- by adjusting plane scroll spring
Collar number is, it can be achieved that driving moment reaches 1Nm or more, therefore this product has the characteristics that lightweight, high rigidity, high driving ability.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is that the main view that lock state is unfolded in hinge is unfolded in a kind of spaceborne radar antenna of the present invention.
Fig. 2 is that the top view that lock status is unfolded in hinge is unfolded in a kind of spaceborne radar antenna of the present invention.
Fig. 3 is that the A-A cross-sectional view that lock status is unfolded in hinge is unfolded in a kind of spaceborne radar antenna of the present invention.
Fig. 4 is that the D direction view that lock state is unfolded in hinge is unfolded in a kind of spaceborne radar antenna of the present invention.
Fig. 5 is that the perspective view that lock status is unfolded in hinge is unfolded in a kind of spaceborne radar antenna of the present invention.
Fig. 6 is the perspective view that hinge rounding state is unfolded in a kind of spaceborne radar antenna of the present invention.
Appended drawing reference:
1, hook is cut with scissors；101, the second lightening hole；102, third lightening hole；2, lock shaft；3, lock hook；4, lock shaft；5, wind spring；
6, shaft；61, end cap；62, pin；7, lock hinge；71, the first lightening hole；8, long set nut；9, screw；10, short set nut；11,
Internal gland；12, interior end cap；13, lubricating pad；14, self lubrication bearing；15, slideway；151, lock slots；152, lubrication groove；16,
One leaf spring；17, second leaf spring；18, pressing plate；19, outer end cap；20, outer press cover；21, outer end axis.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
Limitation of the invention.In addition, term " first ", " second " etc. are used for description purposes only, it is not understood to indicate or imply phase
To importance or implicitly indicate the quantity of indicated technical characteristic.The feature for defining " first ", " second " etc. as a result, can
To explicitly or implicitly include one or more of the features.In the description of the present invention, unless otherwise indicated, " multiple "
It is meant that two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood by concrete condition
Concrete meaning in the present invention.
Specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
As shown in Fig. 1~Fig. 6, the present invention be a kind of spaceborne radar antenna and its expansion hinge used, including hook hinge and
Lock hinge, hook hinge are fixed on antenna base, and hook hinge is connect with the radial rib of antenna, and the side of lock hinge lower end is hinged on the upper of hook hinge
End, the other side, which is equipped with, is installed with slideway, and the upper end of the lower end of the hinged lock hook in lower end of hook hinge, lock hook is equipped with lock shaft, lock shaft
Setting is bonded with slideway under the action of first leaf spring, sliding is equipped with lock slots, and in the case where lock state is unfolded, lock shaft is located at lock
Determine in slot, the side of hook hinge is equipped with connecting hook and cuts with scissors and lock strand and twist the wind spring for generating pretension to lock.
Preferably, wind spring is plane scroll spring, is useful under the system of caching damping and the operating condition of limited space, and
And this tensile property is strong, long service life, this structure is particularly suitable in antenna structure, and hook hinge and lock strand are hinged by shaft,
The inner ring of wind spring covers pin joint on axis by inner end, and interior end cap is equipped in being covered on the outside of wind spring far from the side that hook is cut with scissors
Gland, outer ring are fixed on outer end and put on, and outer end is set in the outer ring of outer end axis, and outer end axis is vertically fixed on lock and twists separate turn
The side of axis, outer end axis are equipped with far from the side of lock hinge to the outer press cover positioned on the outside of wind spring, this structure is simple, twists to lock
There is certain pretension, is conducive to the locked positioning of rapid deployment, promotes the efficiency of expansion.
Preferably, it being connected between shaft and hook hinge by multiple pins, multiple pin holes are uniformly arranged with respect to the axis of shaft,
The other end of shaft is fixed by gland and nut and the hook hinge of T-type, and internal gland is one end that groove profile and lid are located at interior end cap, this
Connection structure limits the axial movement of shaft, promotes the positioning accuracy of shaft, ensure that the hinged precision that lock twists, and then promoted
The precision and stability of total.
Preferably, lock twists the middle part for being hinged on hook hinge between two parties, locks and is equipped with lubricating pad between the two sides of hinge thickness and hook hinge, and two
The distance between a lubrication is equal to the width and clearance fit between the two that lock twists, and lock is twisted is equipped with self-lubricating axis between shaft
Set, lubricating pad and self lubrication bearing are all made of self-lubricating material and are made, and graphene is the material with lubricating property, and copper sheathing also has
There is self-lubricating property, selected according to the actual situation, as long as meeting the condition of self-lubricating, substitutes bearing arrangement, significantly
Reduce bearing the space occupied, so that total is compact, and then reduces the specification of related mating parts, structure is simpler
Single, specification is smaller, realizes light-weight design, and cost is lower, intensity is higher.
Preferably, relatively hinged setting is cut with scissors by lock shaft and hook in the lower end of lock hook, and the upper end of lock hook is U-shaped, lock
Pedestal is located at the upper end of lock hook and opposite lock hook rotation connection, and guarantee is with the state that sliding is that line contacts, reduction friction
Number, in the case where lock state is unfolded, the locking angle between hook hinge and lock strand is not less than 90 degree, guarantees the intensity and stabilization of locking
Property, and locking angle can be adjusted with respect to the position of hook hinge by lock shaft.
Preferably, slideway is sector, and slideway is embedded between two parties in the lower end side of latch hook, slideway and lock shaft cooperation one side
Portion is equipped with the lubrication groove of indent, reduces contact area, reduces coefficient of friction, while conveniently built-in lubriation material, the materials such as graphite,
The smooth degree of enhancing action cooperation, under rounding state, the lower end of slideway contacts setting with lock shaft, guarantees that the stroke of slideway is being cut with scissors
In chain expansion and the actuating range collapsed, and then guarantee the stability of structure.
Preferably, the first reed is " check mark " shape, and the first reed upper end contacts and is equipped with lock hook line prolongs outward
That stretches rolls, and the first reed is provided with the second reed far from the side fitting of lock hook, and the second reed is " check mark " shape, and first
It is fixedly connected by pressing plate with hook hinge after reed and the overlapping setting of the second reed, after the second reed is set, can be promoted to lock hook
Pressure, guarantee the precision and service life of the first reed, while having certain support and protective effect to the first reed.
Preferably, locking strand is Y shape, and the upper end for locking strand is set there are two the fixing axle connecting with radial rib, and fixing axle passes through
Long set nut is twisted with lock to be fixedly connected, this structure is simple, and connection is more firm, and lock, which twists, is equipped with the first lightening hole, into one
Step mitigates the weight that lock twists, so that whole weight is reduced, further lightweight；It is highly preferred that the upper end of hook hinge is equipped with second
Lightening hole, lower end are equipped with third lightening hole, and hook hinge is L shape, and hook hinge is fixed on antenna by multiple groups screw and the cooperation of short set nut
On pedestal, fastness that is further light-weighted while ensure that connection.
Integral installation: hook hinge 1 is connect with lock hinge 7 by shaft 6, and hook hinge 1 is symmetrically pacified with lock hinge 7 along central symmetry plane
Dress is equipped with lubricating pad 13, is installed with axle sleeve 14 between lock hinge 7 and shaft 6 between hook hinge 1 and lock hinge 7, when for relatively rotating
Support and lubrication, design has the pin hole of 12 circumference uniform distributions between shaft 6 and hook hinge 1, for adjusting the axially mounted of axis 6；
End cap 12 is mounted in shaft 6 in wind spring, and outer end cap 19 is sleeved on outer end axis 21, and outer end axis 21 is vertically mounted in lock hinge 7,
Through the direct pin joint of interior end cap 12 on axis 6, outer ring is fixed in outer end cap 19 inner ring of wind spring 5, interior end cap 12, outer end
The both ends of set 20 are separately installed with inner end gland 11, outer end gland 19, and the inner ring of wind spring 5, outer ring fixed position are compressed；Locking
Axis 2 is mounted on parallel with axis 6 in hook hinge 1, and the root of lock hook 3 is mounted in hook hinge 1 by lock shaft 2, lock hook 3 with lock
It can be relatively rotated between axis 2, the tail end of lock hook 3 is equipped with lock shaft 4, and hook hinge 7 is equipped with piece shape slot and inside is connected with by moistening
The slideway 15 of sliding material processing, slideway 15 expose outside and form arcuate structure, and first leaf spring 16 and second leaf spring 17 are riveted on hook
In hinge 1, pressing force is provided for lock hook 3, guarantees that lock shaft 4 is moved along 15 extrados of slideway；During linkage expansion,
Lock shaft 4 provides pressing force along Stable sliding on the slideway 15 with low-friction coefficient by first leaf spring 16 and second leaf spring 17,
When expanding in place, lock shaft 4 slides into matched good lock slots along slideway 15, and by first leaf spring 16 and second leaf spring
17 pressing forces provided maintain the lock status, and ensure that the stability of structure.
A kind of spaceborne radar antenna, using the expansion hinge in above description, so that entire antenna structure is more compact, surely
Qualitative more preferable, quality is lighter, solves the problems, such as background technique.
In practical work process, as shown in Figure 5 and Figure 6, lock hinge 76 can be rotated relative to hook hinge 1 around the shaft, be locked simultaneously
Hook 3 is determined under the compression of first leaf spring 16 and second leaf spring 17, so that lock shaft 4 is moved along 15 extrados of slideway, when 3 turns of lock hook
When moving certain position, lock shaft 4 slides into matched good lock slots along slideway 15, and by first leaf spring 16 and second
The pressing force that leaf spring 17 provides maintains the lock status, to complete mechanism deploying positioning, hook hinge 1, lock cut with scissors the angle of 7 lockings at this time
It is 90 degree, is about 0 degree in the angle of this 3 Impact direction of lock hook and locking face normal direction, much smaller than the friction self-locking of lock hook 3
Angle, by adjust lock shaft 2 with respect to hook hinge 1 eccentric direction, it can be achieved that the adjustment of 4 lock depth of lock shaft to guarantee locked secure
Reliably.
The unfolding mechanism of the application is the typical one-time action mechanism in space, can pass through unlock in ground experiment
The rotations that lock twists 7 opposite hook hinges can be realized as long as locking tool tightens wind spring in tool, and lock shaft 4 is cut with scissors from lock to 7 locking
It is ejected in slot, impaction state then is can be realized into expansion movement opposite direction rotation in lock hinge 7 and hook hinge 1 manually, so as to
To realize repeatedly exhibition receipts movement repeatedly, facilitates carry out ground experiment, can retest, be conducive to the analysis of problem.
One embodiment of the present invention has been described in detail above, but the content is only preferable implementation of the invention
Example, should not be considered as limiting the scope of the invention.It is all according to all the changes and improvements made by the present patent application range
Deng should still be within the scope of the patent of the present invention.
Claims (10)
1. a kind of expansion hinge of spaceborne radar antenna, it is characterised in that: hinge is cut with scissors and locked including hook, the hook hinge is fixed on day
On line pedestal, the hook hinge is connect with the radial rib of antenna, and the side of lock hinge lower end is hinged on the upper end of the hook hinge, separately
Side, which is equipped with, is installed with slideway, and the lower end of the hinged lock hook in lower end of the hook hinge, the upper end of the lock hook is equipped with lock shaft, institute
It states lock shaft and is bonded setting with the slideway under the action of first leaf spring, the sliding is equipped with lock slots, locks shape in expansion
Under state, the lock shaft is located in the lock slots, and the side of the hook hinge is equipped with to connect the hook hinge and lock and twist and to the lock
Twist the wind spring for generating pretension.
2. a kind of expansion hinge of spaceborne radar antenna according to claim 1, it is characterised in that: the wind spring is flat
Face scroll spring, the hook hinge and lock strand are hinged by shaft, and the inner ring of the wind spring covers pin joint on axis by inner end, described
Interior end cap is equipped with far from the side that the hook is cut with scissors to the internal gland covered on the outside of the wind spring, and outer ring is fixed on outer end
It puts on, the outer end is set in the outer ring of outer end axis, and the outer end axis is vertically fixed on the lock and twists the side far from shaft, institute
Outer end axis is stated to be equipped with far from the side of the lock hinge to the outer press cover positioned on the outside of the wind spring.
3. a kind of expansion hinge of spaceborne radar antenna according to claim 2, it is characterised in that: the shaft and institute
It states and is connected between hook hinge by multiple pins, the axis of multiple relatively described shafts of the pin hole is uniformly arranged, the shaft
The other end is fixed by the gland and nut of T-type and hook hinge, and the internal gland is groove profile and lid is located at the interior end cap
One end.
4. a kind of expansion hinge of spaceborne radar antenna according to claim 2, it is characterised in that: the lock twists placed in the middle
It is hinged on the middle part of the hook hinge, is equipped with lubricating pad, two lubrications between the two sides and hook hinge of the lock hinge thickness
The distance between be equal to the width and clearance fit between the two that the lock twists, the lock, which is twisted, to be equipped with from profit between the shaft
Slide-bar set.
5. a kind of expansion hinge of spaceborne radar antenna according to claim 1, it is characterised in that: the lock hook
Relatively hinged setting is cut with scissors by lock shaft and the hook in lower end, and the upper end of the lock hook is U-shaped, and the lock shaft is erected at described
The upper end of lock hook, in the case where lock state is unfolded, the locking angle between the hook hinge and lock strand is not less than 90 degree.
6. a kind of expansion hinge of spaceborne radar antenna according to claim 1, it is characterised in that: the slideway is fan
Shape, the slideway are embedded between two parties in the lower end side of the latch hook, and the slideway and the middle part of lock shaft cooperation one side are equipped with
The lubrication groove of indent, under rounding state, the lower end of the slideway contacts setting with the lock shaft.
7. a kind of expansion hinge of spaceborne radar antenna according to claim 1, it is characterised in that: first reed
For " check mark " shape, first reed upper end contacts with the lock hook line and is equipped with rolling of extending outward, and described the
One reed is provided with the second reed far from the side fitting of lock hook, and second reed is " check mark " shape, first spring
It is fixedly connected by pressing plate with hook hinge after piece and the overlapping setting of the second reed.
8. a kind of expansion hinge of spaceborne radar antenna according to claim 1, it is characterised in that: the lock, which twists, is
Y shape, the upper end that the lock twists are set there are two the fixing axle connecting with radial rib, and the fixing axle passes through long set nut and the lock
Strand is fixedly connected, and the lock, which twists, is equipped with the first lightening hole.
9. a kind of expansion hinge of spaceborne radar antenna according to claim 1, it is characterised in that: the hook is cut with scissors upper
End is equipped with the second lightening hole, and lower end is equipped with third lightening hole, and the hook hinge is L shape, and the hook hinge passes through multiple groups screw and short set
Nut cooperation is fixed on antenna base.
10. a kind of spaceborne radar antenna, it is characterised in that: use a kind of according to any one of claims 1 to 99 described in any item spaceborne radar days
Line and its expansion hinge used.
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