CN106840580A - A kind of diaphragm positioning clamping device - Google Patents
A kind of diaphragm positioning clamping device Download PDFInfo
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- CN106840580A CN106840580A CN201611118640.8A CN201611118640A CN106840580A CN 106840580 A CN106840580 A CN 106840580A CN 201611118640 A CN201611118640 A CN 201611118640A CN 106840580 A CN106840580 A CN 106840580A
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- handed screw
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/02—Wind tunnels
- G01M9/04—Details
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- General Physics & Mathematics (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The present invention relates to a kind of diaphragm positioning clamping device, including slotted nut, left-handed screw, right handed screw, regulation ring；The external screw thread of left-handed screw is matched with the internal thread of slotted nut left handed threaded hole, and external screw thread circumferentially forms alveolus cross structure；The inside of left-handed screw has and wind-tunnel shock wave pipe diameter identical through hole；The external screw thread of right handed screw is matched with the internal thread in slotted nut right-handed thread hole, and external screw thread circumferentially forms alveolus cross structure；The through hole of right handed screw is the venturi section of wind tunnel nozzle；Compressed air through the elongated slot regulation ring in left-handed screw inside, act on diaphragm left end, after rupture of diaphragm, compressed air enters wind tunnel nozzle through the elongated slot of right handed screw.The present invention is only by shock tube and the hydraulic pressure push-pull mechanism of jet pipe, you can insert a stem into slotted nut；Slotted nut is driven to rotate by setting oscillating motor, you can to realize that engagement is clamped, unclamped, equipment operation is simple, high degree of automation.
Description
Technical field
The present invention relates to a kind of diaphragm positioning clamping device, belong to wind tunnel test field.
Background technology
In high energy pulse wind-tunnel totality pneumatic design, the quick high ultrasound for obtaining stabilization is realized using the rupture of membranes method of operation
Fast flow field；Diaphragm ruptures in experiment every time, so being required to change diaphragm every time before experiment.While most of relevant devices are only
Place diaphragm between wind-tunnel shock tube and the adpting flange of wind tunnel nozzle because the characteristics of flange is connected, adpting flange it
Between diaphragm clamping and positioning fall flat, the operation of influence power wind-tunnel rupture of membranes, and the operation changed every time is extremely complex.
Therefore this area is badly in need of providing a kind of diaphragm positioning and clamping device, it is ensured that diaphragm clamping is tight, accurate positioning, and
It is easy to diaphragm to change.
The content of the invention
It is an object of the invention to overcome the deficiencies in the prior art, there is provided a kind of diaphragm positioning clamping device, diaphragm is solved
Orientation problem, and realize the fast assembling-disassembling of diaphragm.
The object of the invention is achieved by following technical solution：
A kind of diaphragm positioning clamping device, including slotted nut, left-handed screw, right handed screw, regulation ring are provided；
The inside of the slotted nut is left handed threaded hole, draw-in groove and the right-handed thread hole for setting gradually；Left handed threaded hole
With levogyrate inner thread, levogyrate inner thread is circumferentially provided with the elongated slot that central angle is 23.5 °, levogyrate inner thread edge every 21.5 °
It is circumferential to form alveolus cross structure；Right-handed thread hole has levogyrate inner thread, and dextrorotation internal thread is circumferentially provided with circle every 21.5 °
Heart angle is 23.5 ° of elongated slot, and dextrorotation internal thread circumferentially forms alveolus cross structure；Draw-in groove is used to position places regulation ring；
The external screw thread of left-handed screw is matched with the internal thread of slotted nut left handed threaded hole, external screw thread circumferentially every
21.5 ° are provided with the elongated slot that central angle is 23.5 °, and external screw thread circumferentially forms alveolus cross structure；Untill left-handed screw left side
Mouthful, for being connected with wind-tunnel shock tube；The inside of left-handed screw has and wind-tunnel shock wave pipe diameter identical through hole；
The external screw thread of right handed screw is matched with the internal thread in slotted nut right-handed thread hole, external screw thread circumferentially every
21.5 ° are provided with the elongated slot that central angle is 23.5 °, and external screw thread circumferentially forms alveolus cross structure；Untill right handed screw right side
Mouthful, it is connected for the diffuser with wind tunnel nozzle；The inside of right handed screw has through hole, and through hole is the venturi section of wind tunnel nozzle,
The entrance of venturi section is the entrance of wind tunnel nozzle, and the port of export of venturi section is tightly connected with the diffuser of wind tunnel nozzle；
The regulation ring is circular ring structure, and the outer shroud of right side is annular projection, for the outer rim against diaphragm；When left-handed
When screw rod insertion is screwed, the right side of left-handed screw when right handed screw is screwed, diaphragm is compacted to against the left side of regulation ring
The right side of regulation ring；
Compressed air through the elongated slot regulation ring in left-handed screw inside, act on diaphragm left end, after rupture of diaphragm, compression
Air enters wind tunnel nozzle through the elongated slot of right handed screw.
Preferably, the seam of the seam of left-handed screw and right handed screw has for placing the recessed of O-ring seal respectively
Groove；Left-handed screw is tightly connected with wind-tunnel shock tube, and right handed screw is tightly connected with the diffuser of wind tunnel nozzle.
Preferably, also including bearing block and unwheeling, bearing block is used to support slotted nut, while ensureing slotted nut rotation
Track, it is the track of wind tunnel body laying in advance that unwheeling is used to be supported on diaphragm positioning clamping device by wheel group.
Preferably, also including two groups of guide posts, the flange of left-handed screw is provided with two guiding rod through-holes, right handed screw
Flange be provided with two guiding rod through-holes, first group of the two of guide post guide post be provided with two guide posts through flange respectively
Through hole is inserted into unwheeling, and second group of the two of guide post guide post is provided with two guiding rod through-holes and is inserted into through flange respectively
In unwheeling, when diaphragm is changed, left-handed screw is moved along first group of guide post, and right handed screw is moved along second group of guide post.
A kind of installation method based on the diaphragm positioning clamping device is provided, is comprised the following steps：
(1) left-handed screw rotates to externally threaded tooth portion and is directed at slotted nut levogyrate inner thread groove portion, and extracts left-handed spiral shell
Bar；Right handed screw is rotated to externally threaded tooth portion is simultaneously directed at slotted nut dextrorotation internal thread groove portion, and extract right handed screw；
(2) diaphragm that will be ruptured is taken out, then regulation ring is taken out；
(3) the externally threaded tooth portion of left-handed screw is directed at the mode of slotted nut levogyrate inner thread groove portion, by left-handed screw
Inside insertion slotted nut；
(4) regulation ring is placed in the draw-in groove of slotted nut, right-hand member places new diaphragm；
(5) the externally threaded tooth portion of right handed screw is directed at the mode of slotted nut dextrorotation internal thread groove portion, by right handed screw
Inside insertion slotted nut；Rotary slotted nut to left-handed screw and right handed screw is engaged with slotted nut simultaneously；
(6) wind tunnel experiment is carried out.
Preferably, also include before step (1) execution, the left end flange of left-handed screw is determined with seam with wind-tunnel shock tube
Position, then be bolted；Right handed screw right-hand member flange is positioned with the diffuser of seam and wind tunnel nozzle, then solid by bolt
It is fixed.
The present invention has the following advantages that compared with prior art：
(1) present invention according to screw thread engagement principle, nut of the design with left and right rotation direction screw, with have respectively it is left,
Dextrorotation to screw rod synchro-meshing, by the effect of the regulation ring installed in nut interior, realizing wind-tunnel shock tube and wind
While the jet pipe connection sealing of hole, it is ensured that the diaphragm positioning set between shock tube and jet pipe is clamped；Only pass through shock tube and spray
The hydraulic pressure push-pull mechanism of pipe, you can the screw rod of left and right rotation direction is inserted into slotted nut, without setting extra promotion machine
Structure；Slotted nut is driven to rotate by setting oscillating motor, you can to realize that engagement is clamped, unclamped.Equipment operation is simple, automatically
Change degree is high, and diaphragm clamps uniform force.
(2) present invention retains screw thread at 8 in the screw of nut and the externally threaded circumferential of screw rod, and remainder is set grows up
Groove, it is ensured that the facility of the replacing of the abundant and diaphragm of engagement.
(3) present invention is integral with fluting right handed screw design by the venturi section of wind tunnel nozzle, it is ensured that wind tunnel nozzle enters
Mouth is accurately positioned with diaphragm, reduces the influence that folder film device is set up to Flow Field in Wind Tunnel, improves wind tunnel nozzle and upstream portion
The connection positioning precision and sealing property of part.
(4) present invention regulation ring structure is not only realized and completed between wind-tunnel shock tube and wind tunnel nozzle by folder film device
Reliable connection and sealing, and meet the diaphragm positioning and the technical requirements for clamping of the proposition of wind-tunnel pneumatic design.
(5) present invention sets in two slotted between left-handed screw, the flange of right handed screw of slotting and unwheeling to guide post
Meter, it is ensured that two sub-screw kinematic accuracies and accurate positioning when folding film is acted.
Brief description of the drawings
Fig. 1 (a) is the front view of diaphragm positioning clamping device of the present invention, and Fig. 1 (b) is diaphragm positioning clamping device of the present invention
Left view；
Fig. 2 (a) is the front view of slotted nut structure, and Fig. 2 (b) is the left view of slotted nut structure；
Fig. 3 (a) is the left view of fluting left-handed screw, and Fig. 3 (b) is the front view of fluting left-handed screw；
Fig. 4 (a) is the front view of fluting right handed screw, and Fig. 4 (b) is the right view of fluting right handed screw；
Fig. 5 (a) is the left view of two way seal regulation ring, and Fig. 5 (b) is the front view of two way seal regulation ring；
Fig. 6 (a) is the front view of folding film guide post, bearing block and unwheeling, and Fig. 6 (b) is folding film guide post, bearing block
With the left view of unwheeling.
Specific embodiment
It is that one kind engages Automatic-clamping diaphragm device using fluting screw thread shown in Fig. 1, is required according to wind-tunnel pneumatic design,
High energy pulse wind-tunnel shock tube diaphragm together with needing to set before nozzle entry, while ensureing being accurately positioned and sealing for diaphragm.
Slotted nut 102 has two screwed holes, fluting left-handed screw 101 and the fluting right handed screw 103 of left and right rotation direction
External screw thread, is preserved for the screw thread of engagement respectively, and remainder is processed into elongated slot, is used to ensure fluting left-handed screw 101 and opens
Groove right handed screw 103 can smoothly be inserted from the screwed hole of slotted nut 102, extracted, and realize the replacing of diaphragm.Elongated slot is acted on
Being easy for the left-handed screw 101 of fluting can be along in slotted nut 102 with male thread portion in the right handed screw 102 of fluting
Elongated slot is inserted into nut interior, it is ensured that the engagement initial position between screw thread；Elongated slot is that correspondence central angle is on external screw thread
The sector structure that the processing of 23.5 ° of screw threads is removed and formed, depth is identical with thread depth, and bottom is identical with diameter of thread.
When slotted nut 102 is in " release " state, fluting left-handed screw 101 is in the presence of driving equipment along fluting spiral shell
Female 102 left-handed screw correspondence slotting position is inserted into screw；Fluting right handed screw 103 is in the presence of driving equipment along fluting
The dextrorotation screw of nut 102 correspondence slotting position is inserted into screw；Under the driving of the hydraulic cylinder at slotted nut two ends, spiral shell of slotting
Female 102 rotate in bearing block 105 according to setting track, and slotted nut is in " tightening " state, real according to the screw thread theory of engagement
Now fluting left-handed screw 101, fluting right handed screw 103 and the synchro-meshing of slotted nut 102 action.
After fluting left-handed screw 101 with the left-handed screw of slotted nut 102 along engaging, realized by the effect of regulation ring 104
Wind-tunnel components downstream connection and sealing；Fluting right handed screw 103 is engaged with the dextrorotation screw of slotted nut 102, because diaphragm exists
Fluting right handed screw 103 is had been placed in regulation ring 104 before inserting, by regulation ring 104 and fluting right handed screw after engagement
Under 103 collective effect, being accurately positioned and clamping for diaphragm is realized；It is connected with wind-tunnel upstream equipment simultaneously, to realize high energy arteries and veins
Rush wind-tunnel rupture of membranes and necessary condition is provided.
Above equipment is supported in unwheeling 106 by bearing block 105, it is ensured that folder film device is determined with wind-tunnel datum axis
Position, it is ensured that it is smooth that left-handed screw 101 and the fluting right handed screw 103 of slotting are extracted and inserted in replacing diaphragm.Bearing block point
It is upper and lower two parts, semicircular configuration, slotted nut 102 is placed in the middle of two rings, bearing block 105 is connected solid with bolt
Fixed, its bottom is connected with being connected with unwheeling, and it is wind that unwheeling 106 is used to be supported on diaphragm positioning clamping device by wheel group
Hole hole body is in advance on the track of laying.
Fig. 2 has left and right rotation direction slotted nut, according to the principle that screw thread is engaged, to ensure that fluting left-handed screw is right with fluting
Rotation screw rod synchro-meshing action, design has left-handed, two rotation directions of dextrorotation screwed hole slotted nuts respectively；In order to ensure spiral shell
Mother fully engages between screw rod, meets again with changing the requirement such as diaphragm, and fluting left-handed screw and fluting right handed screw can be smooth
From nut into and out by left-handed central angle 23.5 (groove) ° part corresponding with the two of dextrorotation screwed holes in nut
Screw thread removes and makes elongated slot at totally 8, leaves 21.5 ° of central angle of correspondence (tooth), sees Fig. 2, at 8 screw thread remain able to ensure screw rod with
The engagement action of nut.
Fig. 3 fluting left-handed screw thread sizes and rotation direction are identical with the left-handed screw of slotted nut, to ensure screw rod and nut
Abundant engagement demand, threaded portion corresponding with slotted nut levogyrate inner thread is arranged to the elongated slot of 23.5 ° of central angle, totally 8
Place, retain correspondence 21.5 ° of central angle 8 at screw thread be used for engage with slotted nut left-handed screw, fluting left-handed screw internal diameter and
Wind-tunnel shock tube is consistent, and seam sets seal groove, connection " o " the type circle sealing of seam locating flange.Elongated slot is on external screw thread
Correspondence central angle removes the sector structure to be formed for the processing of 23.5 ° of screw threads, and depth is identical with thread depth, bottom and screw thread
Path is identical.
Fig. 4 fluting right handed screw thread sizes and rotation direction are identical with slotted nut dextrorotation screw, to ensure screw rod and nut
Abundant engagement and open the demand of the actions such as film, threaded portion corresponding with slotted nut dextrorotation internal thread is arranged to central angle
23.5 ° of elongated slot, at totally 8, retains screw thread at the 8 of 21.5 ° of central angle of correspondence and is used for engage with slotted nut dextrorotation screw, fluting
Right handed screw is connected " o " type circle and seals with wind tunnel nozzle using seam locating flange.
It is the larynx for ensureing the influence that the effect and stream field of diaphragm rupture of membranes are set up, fluting right handed screw 103 and wind tunnel nozzle
Road section uses integrated design, not only improves wind tunnel nozzle critical component --- and it is accurate that venturi section is located by connecting, and lifting film
The rupture of membranes effect of piece reduces interference.
Fig. 5 regulation rings internal diameter is identical with wind-tunnel shock wave bore and wind tunnel nozzle venturi section entrance, and regulation ring two sides respectively sets
Two seals groove is equipped with, ensures shock tube with spray after fluting left-handed screw and fluting right handed screw and slotted nut synchro-meshing
The sealing of pipeline section connection, the right side of regulation ring sets diaphragm positioning and locking structure, it is ensured that folder film device acts the clamping of rear film.
The outer ring side ring of right-hand member is raised, and for compressing diaphragm, diaphragm is identical with the external diameter of regulation ring, and film is compressed by the way that outer ring side ring is raised
Piece, diaphragm is made under the effect of the pressure with the rupture of anti-tampering diaphragm, is ruptured along default mode.
Fig. 6 on the flange that right handed screw is connected with jet pipe, distinguishes on the flange that left-handed screw is connected with wind-tunnel shock tube
There is provided two guide posts, it is ensured that when film, the action of folder film is opened, left-handed screw and right handed screw are inserted, extract accurate positioning.
Unwheeling is supported on as on wind tunnel the body in advance track of laying by wheel group, it is ensured that folder film device position in construction of wind tunnel.Really
Protect screw rod from nut into and out when movement position it is accurate.
The left end flange of left-handed screw 101 is positioned with seam and wind-tunnel shock tube, by 16 diameter phis on flange
Realize being connected and tensing with shock wave pipe flange with 16 M48x5 studs and correspondence nut in 50 hole.The left end of right handed screw 103
Flange is positioned with seam and wind tunnel nozzle, by 16 holes of diameter phi 50 on flange, 16 M48x5 studs and right
Nut is answered to realize being connected and tensing with jet pipe.
To place the technical requirements of diaphragm, hair between the wind-tunnel shock tube and wind tunnel nozzle of realizing the proposition of wind-tunnel pneumatic design
Bright this set using fluting screw thread engagement Automatic-clamping diaphragm device, by left-handed screw of slotting, fluting right handed screw it is synchronous with open
After the engagement of groove nut, according to the screw thread theory of engagement, by the push-and-pull conversion screw rod linear motion of hydraulic cylinder, by the work of regulation ring
With, it is ensured that wind-tunnel shock tube and the accurate connection and sealing of wind tunnel nozzle, while by the diaphragm positioning of nozzle entry and clamping, be
Flow Field in Wind Tunnel is set up and provides necessary condition；Screw rod and nut in corresponding position by cutting elongated groove at screw thread, unwheeling and screw rod flange it
Between be provided with guide post, it is ensured that change diaphragm when screw rod can smoothly into and out.
The installation method of diaphragm positioning clamping device, specifically includes following steps：
(1) the left end flange of left-handed screw is positioned with seam and wind-tunnel shock tube, then is bolted；Right handed screw
Right-hand member flange is positioned with the diffuser of seam and wind tunnel nozzle, then is bolted.Left-handed screw is rotated to externally threaded tooth
Portion is directed at slotted nut levogyrate inner thread groove portion, and extracts left-handed screw；Right handed screw is rotated to externally threaded tooth portion simultaneously
Alignment slotted nut dextrorotation internal thread groove portion, and extract right handed screw；
(2) diaphragm that will be ruptured is taken out, then regulation ring is taken out；
(3) the externally threaded tooth portion of left-handed screw is directed at the mode of slotted nut levogyrate inner thread groove portion, by left-handed screw
Inside insertion slotted nut；
(4) regulation ring is placed in the draw-in groove of slotted nut, right-hand member places new diaphragm；
(5) the externally threaded tooth portion of right handed screw is directed at the mode of slotted nut dextrorotation internal thread groove portion, by right handed screw
Inside insertion slotted nut；Rotary slotted nut to left-handed screw and right handed screw is engaged with slotted nut simultaneously；
(6) wind tunnel experiment is carried out.
The above, optimal specific embodiment only of the invention, but protection scope of the present invention is not limited thereto,
Any one skilled in the art the invention discloses technical scope in, the change or replacement that can be readily occurred in,
Should all be included within the scope of the present invention.
The content not being described in detail in description of the invention belongs to the known technology of professional and technical personnel in the field.
Claims (6)
1. a kind of diaphragm positioning clamping device, it is characterised in that：Including slotted nut (102), left-handed screw (101), dextrorotation spiral shell
Bar (103), regulation ring (104)；
The inside of the slotted nut (102) is left handed threaded hole, draw-in groove and the right-handed thread hole for setting gradually；Left handed threaded hole
With levogyrate inner thread, levogyrate inner thread is circumferentially provided with the elongated slot that central angle is 23.5 °, levogyrate inner thread edge every 21.5 °
It is circumferential to form alveolus cross structure；Right-handed thread hole has levogyrate inner thread, and dextrorotation internal thread is circumferentially provided with circle every 21.5 °
Heart angle is 23.5 ° of elongated slot, and dextrorotation internal thread circumferentially forms alveolus cross structure；Draw-in groove is used to position places regulation ring
(104)
The external screw thread of left-handed screw (101) is matched with the internal thread of slotted nut (102) left handed threaded hole, and external screw thread is circumferentially every
The elongated slot that central angle is 23.5 ° is provided with every 21.5 °, external screw thread circumferentially forms alveolus cross structure；Left-handed screw left side is
Seam, for being connected with wind-tunnel shock tube；The inside of left-handed screw (101) has and wind-tunnel shock wave pipe diameter identical through hole；
The external screw thread of right handed screw (103) is matched with the internal thread in slotted nut (102) right-handed thread hole, and external screw thread is circumferentially every
The elongated slot that central angle is 23.5 ° is provided with every 21.5 °, external screw thread circumferentially forms alveolus cross structure；Right handed screw right side is
Seam, is connected for the diffuser with wind tunnel nozzle；The inside of right handed screw (103) has through hole, and through hole is wind tunnel nozzle
Venturi section, the entrance of venturi section is the entrance of wind tunnel nozzle, and the port of export of venturi section is tightly connected with the diffuser of wind tunnel nozzle；
The regulation ring (104) is circular ring structure, and the outer shroud of right side is annular projection, for the outer rim against diaphragm；Work as a left side
When rotation screw rod (101) insertion is screwed, the right side of left-handed screw (101) is against the left side of regulation ring (104), right handed screw
(103) when screwing, diaphragm is compacted to the right side of regulation ring (104)；
Compressed air is internal through the elongated slot regulation ring (104) in left-handed screw (101), acts on diaphragm left end, works as rupture of diaphragm
Afterwards, compressed air enters wind tunnel nozzle through the elongated slot of right handed screw (103).
2. diaphragm positioning clamping device according to claim 1, it is characterised in that the seam of left-handed screw (101) and dextrorotation
The seam of screw rod (103) has the groove for placing O-ring seal respectively；Left-handed screw (101) and the wind-tunnel shock wave seal of tube
Connection, right handed screw (103) is tightly connected with the diffuser of wind tunnel nozzle.
3. diaphragm positioning clamping device according to claim 1, it is characterised in that also including bearing block (105) and unwheeling
(106), bearing block (105) is for supporting slotted nut (102), while ensureing slotted nut rotational trajectory, unwheeling (106) is used for
Diaphragm positioning clamping device is supported on as on wind tunnel the body in advance track of laying by wheel group.
4. diaphragm positioning clamping device according to claim 1, it is characterised in that also including two groups of guide posts, left-handed screw
(101) flange is provided with two guiding rod through-holes, and the flange of right handed screw (103) is provided with two guiding rod through-holes, first
Two guide posts of group guide post are provided with two and are oriented to rod through-holes and are inserted into unwheeling through flange respectively, second group of guide post
Two guide posts are provided with two guiding rod through-holes and are inserted into unwheeling through flange respectively, when diaphragm is changed, left-handed screw
(101) moved along first group of guide post, right handed screw (103) is moved along second group of guide post.
5. a kind of installation method based on diaphragm positioning clamping device described in claim 1, it is characterised in that comprise the following steps：
(1) left-handed screw (101) rotation to externally threaded tooth portion is directed at slotted nut (102) levogyrate inner thread groove portion, and extracts
Left-handed screw (101)；Simultaneously by spiral shell in right handed screw (103) rotation to externally threaded tooth portion alignment slotted nut (102) dextrorotation
Groove portion, and extract right handed screw (103)；
(2) diaphragm that will be ruptured is taken out, then regulation ring (104) is taken out；
(3) the externally threaded tooth portion of left-handed screw (101) is directed at the mode of slotted nut (102) levogyrate inner thread groove portion, by a left side
It is internal that slotted nut (102) is inserted in rotation screw rod (101)；
(4) regulation ring (104) is placed in the draw-in groove of slotted nut (102), right-hand member places new diaphragm；
(5) the externally threaded tooth portion of right handed screw (103) is directed at the mode of slotted nut (102) dextrorotation internal thread groove portion, by the right side
It is internal that slotted nut (102) is inserted in rotation screw rod (103)；Rotary slotted nut (102) is to left-handed screw (101) and right handed screw
(103) while being engaged with slotted nut (102)；
(6) wind tunnel experiment is carried out.
6. method according to claim 5, it is characterised in that step (1) also includes before performing, by left-handed screw (101)
Left end flange is positioned with seam and wind-tunnel shock tube, then is bolted；Right handed screw (103) right-hand member flange is with seam and wind
The diffuser positioning of hole jet pipe, then be bolted.
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| CN201611118640.8A CN106840580B (en) | 2016-12-07 | 2016-12-07 | A kind of diaphragm positioning clamping device |
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|---|---|---|---|
| CN201611118640.8A CN106840580B (en) | 2016-12-07 | 2016-12-07 | A kind of diaphragm positioning clamping device |
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| CN109975473A (en) * | 2019-03-20 | 2019-07-05 | 浙江大学 | A kind of electronic needle of shock tube that can be used under lower pressure punctures film device |
| CN110307241A (en) * | 2019-07-15 | 2019-10-08 | 中国航空工业集团公司北京长城计量测试技术研究所 | A kind of shock tube anti-dropout big nut |
| CN111076889B (en) * | 2019-12-25 | 2022-05-31 | 中国空气动力研究与发展中心低速空气动力研究所 | Shock tube for dynamic pressure calibrating device |
| CN111076889A (en) * | 2019-12-25 | 2020-04-28 | 中国空气动力研究与发展中心低速空气动力研究所 | Shock tube for dynamic pressure calibrating device |
| CN110977676A (en) * | 2019-12-27 | 2020-04-10 | 惠州麦丰密封科技有限公司 | A unhairing limit device for processing O type circle |
| CN110977676B (en) * | 2019-12-27 | 2021-05-18 | 惠州麦丰密封科技有限公司 | A unhairing limit device for processing O type circle |
| CN111579200A (en) * | 2020-06-12 | 2020-08-25 | 中国空气动力研究与发展中心超高速空气动力研究所 | Screw temperature control film clamping device |
| CN111579200B (en) * | 2020-06-12 | 2024-03-26 | 中国空气动力研究与发展中心超高速空气动力研究所 | Screw temperature control film clamping device |
| CN112179607A (en) * | 2020-09-30 | 2021-01-05 | 中国空气动力研究与发展中心超高速空气动力研究所 | Wind tunnel diaphragm clamping device |
| CN112245058A (en) * | 2020-10-10 | 2021-01-22 | 中国人民解放军陆军特色医学中心 | Animal impact injury simulation experiment device |
| CN112857731A (en) * | 2020-12-22 | 2021-05-28 | 中国空气动力研究与发展中心设备设计及测试技术研究所 | Positioning and tensioning device between wind tunnel sections |
| CN112857731B (en) * | 2020-12-22 | 2023-03-17 | 中国空气动力研究与发展中心设备设计及测试技术研究所 | Positioning and tensioning device between wind tunnel sections |
| CN113092054A (en) * | 2021-04-19 | 2021-07-09 | 中国空气动力研究与发展中心超高速空气动力研究所 | Wind tunnel metal diaphragm clamping device |
| CN113109014B (en) * | 2021-05-24 | 2022-04-15 | 中国空气动力研究与发展中心超高速空气动力研究所 | Wind tunnel hydraulic film clamping device |
| CN113109014A (en) * | 2021-05-24 | 2021-07-13 | 中国空气动力研究与发展中心超高速空气动力研究所 | Wind tunnel hydraulic film clamping device |
| CN114112287A (en) * | 2021-10-26 | 2022-03-01 | 郑州机械研究所有限公司 | Clamping mechanism for clamping and replacing diaphragm |
| CN114112287B (en) * | 2021-10-26 | 2023-10-03 | 郑州机械研究所有限公司 | Clamping mechanism for clamping and replacing membrane |
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