CN102788665A - Super-huge type multi-layer full-automatic sliding swing rainfall test device - Google Patents
Super-huge type multi-layer full-automatic sliding swing rainfall test device Download PDFInfo
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- CN102788665A CN102788665A CN201210312282XA CN201210312282A CN102788665A CN 102788665 A CN102788665 A CN 102788665A CN 201210312282X A CN201210312282X A CN 201210312282XA CN 201210312282 A CN201210312282 A CN 201210312282A CN 102788665 A CN102788665 A CN 102788665A
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Abstract
The invention discloses a super-huge type multi-layer full-automatic sliding swing rainfall test device, which comprises a PLC (programmable logic controller) full-automatic control system, a base, a main column, a plurality of lateral branch pipes distributed along the main column at vertical intervals and a sliding swing mechanism. The main column is a main water supply pipe, each branch pipe is connected with the main column through a rocker arm in a swinging mode is and provided with a plurality of catapulting drop type spray nozzles which can spray discontinuous water drops with diameter of 0.5 to 4.5 mm; a driving device of the sliding swing mechanism drives a upper push-pull rod and a lower push-pull rod to ascend and descend, the upper push-pull rod and the lower push-pull rod drives each branch pipe to make horizontal arc swing in a range of 30 degrees upwards to 45 degrees downwards under the traction of the rocker arms through push-pull connecting rods, so that a vertical component and a horizontal component of the rainfall reach the technical requirements of the military standard and the national standard. The super-huge type multi-layer full-automatic sliding swing rainfall test device is particularly suitable for rainfall tests of large-scale devices, high-voltage devices, military devices, sky weapons and the like.
Description
Technical field
The present invention relates to the environmental test art, refer in particular to a kind of automatically sliding pendulum-type salt fog test equipment of super-huge multilayer that offers main equipment, high-tension apparatus, military equipment, empty day weapon.
Background technology
Along with the emergence of the advanced manufacturing industry of Chinese independent research, export volume increases day by day, and should meet international standards to the quality requirements of product; The advanced military equipment of China, empty day weapon being are also actively are being researched and developed and are being produced simultaneously.The said equipment and equipment must be through strict environmental simulation tests, reach just can dispatch from the factory after the standard or equip army.
In view of the foregoing, country has formulated army's mark and GB to the salt fog test of equipment and equipment, is listed below at present:
People's Republic of China's GJB:
GJB1501A-2009 military hardware laboratory environment test method first: general requirement;
GJB1508A-2009 military hardware laboratory environment test method the 8th part: salt fog test;
GJB15022A-2009 military hardware laboratory environment test method the 22nd part: accumulated ice/ice rain test;
The State Standard of the People's Republic of China:
The ordinary test requirement of GB/T16927.1-1997 high-voltage test techniques first;
GB/T2423.3-2006/IEC60068-2-78:2001 electric and electronic product environmental test part 2: test method test Cab: steady-state damp heat test;
GB/T5170.5-2008 electric and electronic product environmental test equipment method of inspection damp heat test equipment;
GB/T5170.5-2008 electric and electronic product environmental test equipment method of inspection damp heat test equipment;
GB/T10586.1-2006 moisture-heat test-box technical conditions.
Comprehensive above-mentioned standard, the technical requirement of salt fog test is following:
According to above-mentioned standard, at present China does not also have a kind of main equipment, equipment to be carried out the equipment of salt fog test, has only small-sized salt fog test case or the small-sized oscillating rod type device of drenching with rain.Can't satisfy main equipment, equip requirement by each item test condition of army's mark, GB.
Summary of the invention
The present invention's fundamental purpose provides the automatically sliding pendulum-type salt fog test equipment of a kind of super-huge multilayer; It can reach the test condition of army's mark and GB; Can offer the salt fog test of main equipment, high-tension apparatus, military equipment, empty day weapon etc., thereby overcome the deficiency of prior art.
For realizing above-mentioned purpose, the present invention adopts following technical scheme:
The automatically sliding pendulum-type salt fog test equipment of a kind of super-huge multilayer; Include PLC full-automatic control system, base, head tree and along this head tree between the upper and lower apart from a plurality of horizontal branching pipe that distributes; This base is arranged with the castor of being convenient to movable base; This head tree is installed on the base, and head tree is a main-supply, and water branches to each branching pipe through this head tree; Each branching pipe is pivotably connected in head tree through rocking arm, and each branching pipe to be provided with a plurality of diameters that spray be that the bullet of the discontinuous globule of 0.5～4.5mm drips the formula spray spout; And; Be provided with sliding swinging mechanism to each branching pipe; This cunning swinging mechanism includes drive unit, goes up lower push-pull bar, push-and-pull connecting rod, slide guide track and slide block, and this slide guide track is arranged on the head tree, and this slide block is installed on slippage up and down in the slide guide track; Last lower push-pull bar is connected in this slide block; The two ends of this push-and-pull connecting rod articulate with this branching pipe and last lower push-pull bar respectively, and lower push-pull bar goes up and down on this drive device drives, last lower push-pull bar through the push-and-pull connecting rod drive branching pipe under the traction of rocking arm from level up 30 degree down do circular swing motion in 45 scopes spent.
Preferably, said bullet drips the formula spray spout and includes nozzle body and shower nozzle, and the silica gel draw-tube is housed in this nozzle body, and the tube wall of nozzle body is provided with pore, and the inlet opening diameter of nozzle body front end is 0.2mm; Spring and micelle valve are equipped with in this shower nozzle inside, and the injection diameter of shower nozzle is 0.4mm, when intake pressure reaches 2kg/cm
2And when above, can open the micelle valve, and the water in the silica gel draw-tube is ejaculations of being hit by a bullet of the spray orifice of 0.4mm from diameter, the formation diameter is the globule of 0.5～4.5mm.
Preferably, said head tree is communicated in each branching pipe through the steel wire soft rubber tube.
Preferably, said upward lower push-pull bar is a multi-segment structure, includes plural number section montant and is connected in the joint cross bar between adjacent two sections montants, and each joint cross bar is connected in aforementioned slide block through straight beam.
Preferably, said push-and-pull connecting rod is two, and their lower ending pivot is connected on the cross bar of aforementioned joint, and the pivoting point of upper end and branching pipe is distributed in the both sides of aforementioned rocking arm and branching pipe pivoting point.
Preferably; Said PLC full-automatic control system includes PLC controller, variable frequency pump, frequency conversion oil pump, oil cylinder and oil cylinder stroke switch; Supplied water to each branching pipe by this variable frequency pump, oil cylinder is aforementioned drive unit, and lower push-pull bar lower end is connected in the output piston bar of oil cylinder on this; Oil cylinder is connected in this frequency conversion oil pump, and this PLC controller is electrically connected on this variable frequency pump, frequency conversion oil pump and oil cylinder stroke switch.
Preferably, in the said frequency conversion oil pump variable-frequency motor is installed, under the control of PLC controller, rotating speed of motor changes, and the oil mass of oil pump and oil-feed pressure change thereupon, and the rising or falling speed of last lower push-pull bar changes thereupon.
Preferably, said variable frequency pump is for hydraulic pressure and the flow of its output change and make the amount of drenching with rain reach that army marks and the variable frequency pump of GB requirement down in PLC controller control.
Preferably, said base is provided with a plurality of hooks that are provided with around this head tree, and the upper end of head tree connects through complex root oblique rollering steel silk rope leads in each hook.
The present invention compared with prior art has tangible advantage and beneficial effect, particularly, can conclude following several aspect by technique scheme:
One, it is through being provided with a plurality of horizontal branching pipes along the head tree as main-supply; Not only simplified water-supply structure; And can form multilayer spray effect; Make the present invention obtain the scope that sprays greatly, be particularly suitable for the salt fog test of some main equipments, high-tension apparatus, military equipment, empty day weapon etc.;
Two, it utilizes the sliding swinging mechanism of particular design to promote each branching pipe and under the traction of rocking arm, makes the motion that teeters of arc line type, and combines the bullet of particular design to drip the formula spray spout; This kind oscillating motion mode can make multilayer the branching pipe top nozzle the spray direction from level up 30 the degree down 45 the degree scope in swing; And the raindrop that bullet drips the ejection of formula spray spout are discontinuous; Thereby make the vertical component of drenching with rain and horizontal component reach the technical requirement of army's mark and GB, the raindrop diameter changes in 0.5～4.5mm scope;
Three, it adopts the variable frequency pump and the frequency conversion oil pump hydraulic technique of particular design PLC control; Water supply flow, pressure are changed by setup parameter; Make stroke, slew rate, the amplitude of oscillation of sliding swinging mechanism; The amount of drenching with rain of the system of drenching with rain, raindrop size variation etc. all can change by setup parameter; And Automatic Control; Pilot time slot be can set at interval, army's mark, GB requirement reached;
Four, the dress castor under the plant bottom case of originally drenching with rain can singly overlap independent use, also can overlap the cluster combination more, can carry out program control salt fog test to large equipment and equipment, reach that army marks and GB to each item technical requirement of salt fog test equipment.
For more clearly setting forth architectural feature of the present invention, technological means and specific purposes that reached and function, come the present invention is done further explain below in conjunction with accompanying drawing and specific embodiment:
Description of drawings
Fig. 1 is the overall package schematic perspective view of the present invention's embodiment.
Fig. 2 is the partial structurtes zoomed-in view of base among the present invention's the embodiment, drive unit and PLC control system etc.
Fig. 3 is the partial structurtes zoomed-in view of branching pipe among the present invention's the embodiment, sliding swinging mechanism.
The accompanying drawing identifier declaration:
10, base 11, hook
12, castor 20, head tree
21, rocker arm support 22, slide guide track
23, slide block 30, branching pipe
31, steel wire soft rubber tube 32, bullet drip the formula spray spout
33, Rocker arm 40, sliding swinging mechanism
41, drive unit 42, last lower push-pull bar
421, montant 422, joint cross bar
43, push-and-pull connecting rod 50, PLC full-automatic control system
51, PLC controller 52, frequency conversion oil pump
53, oil cylinder stroke switch 60, wire rope
71, water disposal facility 72, water tank
73, variable frequency pump
Embodiment
Please referring to figs. 1 through shown in Figure 3, the concrete structure that it has demonstrated the present invention's preferred embodiment includes base 10, head tree 20, a plurality of horizontal branching pipe 30, sliding swinging mechanism 40 and PLC full-automatic control system 50.
Wherein, a wire rope hook 11 is installed respectively on four angles of this base 10, its effect is to mould bag wire rope 60 with four that tiltedly pull down from head tree 20 tops to reinforce, and increases the steadiness of head tree 20, produces when avoiding this equipment operation and shakes phenomenon.And, below four angles of base 10, universal caster wheel 12 being installed also preferably, its effect is to make the equipment conveniently moving of originally drenching with rain; Simultaneously can be easily according to difference receive test specimen area, volume size, become a display by the above-mentioned cluster tool of drenching with rain of many covers, large-scale, the multiple test specimen that receives is carried out salt fog test.
This head tree 20 is the main-supply of this equipment, for being embodied as the water that feeds the usefulness of drenching with rain in this water main, can be provided with water disposal facility 71, water tank 72 and variable frequency pump 73.The effect of its water treatment facilities 71 is with after the former water treatment, makes the electrical conductivity of water of the device spray that supplies to drench with rain reach the requirement of army's mark and GB.Water tank 72 is used for the water up to standard of store water treatment facility 71 outputs, supplies variable frequency pump 73 to extract and uses.This variable frequency pump 73 is used to water main 20 water with certain pressure is provided; The characteristics of this water pump 73 are that variable-frequency motor wherein is installed; Under the control of following program control PLC controller, when rotating speed of motor was high, inflow increased with water inlet pressure; Make spray flux drip the diameter increase, otherwise diminish with drenching with rain; Promptly under the control of PLC controller, the hydraulic pressure and the flow of variable frequency pump 73 outputs change, and make the amount of drenching with rain reach army's mark and GB requirement.
These a plurality of horizontal branching pipes 30 between the upper and lower apart from distributing, form the multiple field pattern of drenching with rain along this head tree 20, increase its drench with rain height and scope, the spacing of its actual branching pipe 30 and quantity can according to need and do corresponding adjustment.Each branching pipe 30 is communicated in said head tree 20 through steel wire soft rubber tube 31, and laterally the water source of branching pipe 30 is to be provided through water outlet steel wire soft rubber tube 31 by water main 20.
Each branching pipe 30 is provided with several bullets and drips formula spray spout 32.This bullet drips the formula spray spout and includes nozzle body and shower nozzle, and the silica gel draw-tube is housed in this nozzle body, and the tube wall of nozzle body is provided with pore, and the inlet opening diameter of nozzle body front end is 0.2mm; Spring and micelle valve are equipped with in this shower nozzle inside, and the injection diameter of shower nozzle is 0.4mm, when intake pressure reaches 2kg/cm
2And when above, can open the micelle valve, and the water in the silica gel draw-tube is ejaculations of being hit by a bullet of the spray orifice of 0.4mm from diameter, the formation diameter is the globule of 0.5～4.5mm.
Because the inlet opening little (diameter 0.2mm) of tail end, the spray orifice of shower nozzle big (diameter 0.4mm) so water could inflation silica gel draw-tube and reached out valve pressure for some time, so the raindrop that spray are discontinuous, does not converge into current, emulation raindrop effective.
It is relevant with water supply pressure that each bullet drips the spray flux and the raindrop diameter of formula nozzle, now is listed as follows:
| Water supply pressure (kg/cm 2) | 2 | 3 | 4 | 5 | 6 |
| The amount of drenching with rain (kg/h) | 32 | 42 | 55 | 73 | 90 |
| Raindrop diameter phi (mm) | 0.5 | 1.3 | 2.2 | 3.4 | 4.8 |
Can know from above-mentioned table, when injection diameter is 0.4mm, when water supply pressure at 2.0～6.0kg/cm
2During variation, the raindrop diameter of ejection is 0.5～4.8mm.
Each branching pipe 30 is pivotably connected in head tree 20 through rocking arm 33, and the lower end of rocking arm 33 is articulated on the rocker arm support 21 on the head tree 20 through rotating shaft, and the upper end of rocking arm 33 is articulated in branching pipe 30 through rotating shaft.Utilize the draw of this rocking arm 33 can make each branching pipe 30 do the motion that teeters of camber line shape around the rotation center of rocking arm 33.Making the spray direction that the bullet of installing on each horizontal branching pipe 30 drips formula spray spout 32 is to change in the benchmark scope that upwards 30 degree, downward 45 are spent with the level.
Sliding swinging mechanism 40 is used to drive the sliding pendular motion of each horizontal branching pipe 30; This cunning swinging mechanism 40 includes drive unit 41, goes up lower push-pull bar 42 and push-and-pull connecting rod 43; The two ends of this push-and-pull connecting rod 43 articulate with this branching pipe 30 and last lower push-pull bar 42 respectively; This drive unit 41 drives goes up lower push-pull bar 42 up-downs, and last lower push-pull bar 42 drives branching pipes 30 through push-and-pull connecting rod 43 and does circular swing motion around the rotation center of rocking arm 33.
In the present embodiment, said drive unit 41 is for vertically being installed on the oil cylinder on the base 10, and the lower end of last lower push-pull bar 42 is connected on the output piston bar of this oil cylinder 41 through web joint.Said upward lower push-pull bar 42 is a multi-segment structure, includes plural number section montant 421 and is connected in the joint cross bar 422 between adjacent two sections montants 421, can articulate through rotating shaft between montant 421 and the joint cross bar 422.Be provided with slide guide track 22 to each joint cross bar 422 on this head tree 20, the slide block 23 of slippage up and down is installed in the slide guide track 22, this joint cross bar 422 is connected on this slide block 23 through a straight beam.Said push-and-pull connecting rod 43 is two, and the pivoting point of they and branching pipe 30 is distributed in the both sides of aforementioned rocking arm 33 and branching pipe 30 pivoting points, so to improve the stability of waving of each branching pipe 30.
This PLC full-automatic control system 50 includes PLC controller 51, frequency conversion oil pump 52, oil cylinder stroke switch 53, aforementioned variable frequency pump 73 and oil cylinder 41; Supply water to head tree 20 by this variable frequency pump 73, give each branching pipe 30 by head tree 20 through 31 shuntings of steel wire soft rubber tube again.This frequency conversion oil pump 52 is connected in oil cylinder 41, and this PLC controller 51 is electrically connected on this variable frequency pump 73, frequency conversion oil pump 52 and oil cylinder 41 travel switches, and the stroke up and down of oil cylinder piston bar is to be controlled by oil cylinder stroke switch 53 and PLC controller 51.
The characteristics of this oil pump 52 are that variable-frequency motor wherein is installed, and under the control of PLC controller, rotating speed of motor changes, and the oil mass of oil pump and oil-feed pressure change thereupon, and the rising or falling speed of last lower push-pull bar changes thereupon.When motor speed was high, the pressure of oil inlet quantity and oil-feed increased, and the oil cylinder piston bar rises fast, otherwise it is slow to rise, thereby changed the speed of waving of above-mentioned each branching pipe 30.
The principle of work and the course of work that present embodiment is detailed are following:
Tap water is handled back input water tank 72 accordingly via water disposal facility 71; Make the water source reach the requirement of army's mark and GB; By PLC controller 51 automatic control of conversion water pumps 52 extraction of the water in the water tank 72 is conveyed in the head tree 20; Head tree 20 flows the horizontal branching pipe 30 to each layer with moisture again, drips formula spray spout 32 by the bullet on each branching pipe 30 and sprays.
In the process of spraying; Oil mass by the corresponding pressure of PLC controller 51 automatic control of conversion oil pumps 52 conveyings; The output piston bar that impels oil cylinder 41 is by the speed activity of setting; Each section montant 421 of lower push-pull bar 42 is done the oscilaltion activity simultaneously in the drive, and each montant 421 promotes each joint cross bar 422 and moves up and down, and each joint cross bar 422 promotes each horizontal branching pipe 30 swing through two push-and-pull connecting rods 43 again; Because branching pipe 30 receives the traction of rocking arm 33, so branching pipe 30 is the center do the camber line motion that teeters with the rotating shaft on the rocker arm support 21.
The above; It only is preferred embodiment of the present invention; Be not that technical scope of the present invention is done any restriction, so every foundation technical spirit of the present invention all still belongs in the scope of technical scheme of the present invention any trickle modification, equivalent variations and modification that above embodiment did.
Claims (9)
1. a super-huge multilayer is automatically slided pendulum-type salt fog test equipment; It is characterized in that: include PLC full-automatic control system, base, head tree and along this head tree between the upper and lower apart from a plurality of horizontal branching pipe that distributes; This base is arranged with the castor of being convenient to movable base; This head tree is installed on the base, and head tree is a main-supply, and water branches to each branching pipe through this head tree; Each branching pipe is pivotably connected in head tree through rocking arm, and each branching pipe to be provided with a plurality of diameters that spray be that the bullet of the discontinuous globule of 0.5～4.5mm drips the formula spray spout; And; Be provided with sliding swinging mechanism to each branching pipe; This cunning swinging mechanism includes drive unit, goes up lower push-pull bar, push-and-pull connecting rod, slide guide track and slide block, and this slide guide track is arranged on the head tree, and this slide block is installed on slippage up and down in the slide guide track; Last lower push-pull bar is connected in this slide block; The two ends of this push-and-pull connecting rod articulate with this branching pipe and last lower push-pull bar respectively, and lower push-pull bar goes up and down on this drive device drives, last lower push-pull bar through the push-and-pull connecting rod drive branching pipe under the traction of rocking arm from level up 30 degree down do circular swing motion in 45 scopes spent.
2. the automatically sliding pendulum-type salt fog test equipment of super-huge multilayer according to claim 1; It is characterized in that: said bullet drips the formula spray spout and includes nozzle body and shower nozzle; The silica gel draw-tube is housed in this nozzle body; The tube wall of nozzle body is provided with pore, and the inlet opening diameter of nozzle body front end is 0.2mm; Spring and micelle valve are equipped with in this shower nozzle inside, and the injection diameter of shower nozzle is 0.4mm, when intake pressure reaches 2kg/cm
2And when above, can open the micelle valve, and the water in the silica gel draw-tube is ejaculations of being hit by a bullet of the spray orifice of 0.4mm from diameter, the formation diameter is the globule of 0.5～4.5mm.
3. the automatically sliding pendulum-type salt fog test equipment of super-huge multilayer according to claim 1, it is characterized in that: said head tree is communicated in each branching pipe through the steel wire soft rubber tube.
4. the automatically sliding pendulum-type salt fog test equipment of super-huge multilayer according to claim 1; It is characterized in that: said upward lower push-pull bar is a multi-segment structure; Include plural number section montant and be connected in the joint cross bar between adjacent two sections montants, each joint cross bar is connected in aforementioned slide block through straight beam.
5. the automatically sliding pendulum-type salt fog test equipment of super-huge multilayer according to claim 4; It is characterized in that: said push-and-pull connecting rod is two; Their lower ending pivot is connected on the cross bar of aforementioned joint, and the pivoting point of upper end and branching pipe is distributed in the both sides of aforementioned rocking arm and branching pipe pivoting point.
6. the automatically sliding pendulum-type salt fog test equipment of super-huge multilayer according to claim 1; It is characterized in that: said PLC full-automatic control system includes PLC controller, variable frequency pump, frequency conversion oil pump, oil cylinder and oil cylinder stroke switch; Supply water to each branching pipe by this variable frequency pump; Oil cylinder is aforementioned drive unit; Should go up the output piston bar that the lower push-pull bar lower end is connected in oil cylinder, oil cylinder is connected in this frequency conversion oil pump, and this PLC controller is electrically connected on this variable frequency pump, frequency conversion oil pump and oil cylinder stroke switch.
7. the automatically sliding pendulum-type salt fog test equipment of super-huge multilayer according to claim 6; It is characterized in that: in the said frequency conversion oil pump variable-frequency motor is installed; Under the control of PLC controller; Rotating speed of motor changes, and the oil mass of oil pump and oil-feed pressure change thereupon, and the rising or falling speed of last lower push-pull bar changes thereupon.
8. the automatically sliding pendulum-type salt fog test equipment of super-huge multilayer according to claim 6 is characterized in that: said variable frequency pump is for hydraulic pressure and the flow of its output change and make the amount of drenching with rain reach that army marks and the variable frequency pump of GB requirement down in the control of PLC controller.
9. the automatically sliding pendulum-type salt fog test equipment of super-huge multilayer according to claim 1, it is characterized in that: said base is provided with a plurality of hooks that are provided with around this head tree, and the upper end of head tree connects the jail in each hook through complex root oblique rollering steel silk rope.
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| CN103235220A (en) * | 2013-04-16 | 2013-08-07 | 南方电网科学研究院有限责任公司 | Device and method for rainfall test of transmission line tower |
| CN104977432A (en) * | 2014-04-11 | 2015-10-14 | 南方电网科学研究院有限责任公司 | Water spray apparatus for long-string insulator wet operation impact test, and application thereof |
| CN105486953A (en) * | 2015-12-18 | 2016-04-13 | 中国电力科学研究院 | Rainfall automatic measurement system and method for rain test of electrical device |
| CN106370356A (en) * | 2016-11-29 | 2017-02-01 | 安徽安凯汽车股份有限公司 | Tool assembly for rainfall test of front and back walls of passenger car |
| CN113959645A (en) * | 2021-12-21 | 2022-01-21 | 中国飞机强度研究所 | Airplane test rain simulation device and simulation method |
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|---|---|---|---|---|
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| CN104977432A (en) * | 2014-04-11 | 2015-10-14 | 南方电网科学研究院有限责任公司 | Water spray apparatus for long-string insulator wet operation impact test, and application thereof |
| CN104977432B (en) * | 2014-04-11 | 2019-09-20 | 南方电网科学研究院有限责任公司 | Long-string insulator wet practice impact test water injector and its application |
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| CN106370356A (en) * | 2016-11-29 | 2017-02-01 | 安徽安凯汽车股份有限公司 | Tool assembly for rainfall test of front and back walls of passenger car |
| CN106370356B (en) * | 2016-11-29 | 2019-04-19 | 安徽安凯汽车股份有限公司 | A kind of tool assembly assembly enclosing salt fog test for car front and back |
| CN113959645A (en) * | 2021-12-21 | 2022-01-21 | 中国飞机强度研究所 | Airplane test rain simulation device and simulation method |
| CN113959645B (en) * | 2021-12-21 | 2022-03-15 | 中国飞机强度研究所 | Airplane test rain simulation device and simulation method |
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Effective date of registration: 20170425 Address after: Six Dongguan Industrial Zone, Guangdong City, the revitalization of the industrial park, building, floor, floor, 523000 Co-patentee after: DONGGUAN HONGZE ELECTRICAL AND MECHANICAL ENGINEERING CO., LTD. Patentee after: Dongwan Fengyuan Electric Co., Ltd. Address before: Six Dongguan Industrial Zone, Guangdong City, the revitalization of the industrial park, building, floor, floor, 523000 Patentee before: Dongwan Fengyuan Electric Co., Ltd. |
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