CN110057572A - A kind of servo valve armature component integral stiffness test device - Google Patents
A kind of servo valve armature component integral stiffness test device Download PDFInfo
- Publication number
- CN110057572A CN110057572A CN201910341535.8A CN201910341535A CN110057572A CN 110057572 A CN110057572 A CN 110057572A CN 201910341535 A CN201910341535 A CN 201910341535A CN 110057572 A CN110057572 A CN 110057572A
- Authority
- CN
- China
- Prior art keywords
- plate
- main
- armature component
- pedestal
- slide bar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/003—Machine valves
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
It is disclosed by the invention to belong to detection device technology field, specially a kind of servo valve armature component integral stiffness test device, including pedestal, support, limit plate pedestal, main slide bar, secondary slide bar and top plate, the support is fixedly mounted in the intracavity bottom of the pedestal, this kind of servo valve armature component integral stiffness test device, pass through the united application of accessory, Die and mould plate can be added on limit plate, Die and mould plate can complexed metal plate mounted and dismounted with limit plate, make armature component in carrying out test process, it can be according to the Outside Dimensions of different armature components, carry out the replacement of Die and mould plate, flexibility is big, test scope is wide, make the periphery of armature component can be with the major trough and secondary slot buckle on Die and mould plate, convenient for cooperating main clamp and sub-folder tool to carry out pullling test after fixation, test effect is stablized, test data is effective, the fan page that outside is added Limit Board position can be blocked during the test, prevent armature component splashing from damaging, it is highly-safe.
Description
Technical field
The present invention relates to detection device technology field, specially a kind of servo valve armature component integral stiffness test device.
Background technique
Servo valve is primarily referred to as electrohydraulic servo valve, it after receiving electric simulation signal, the flow of corresponding output modulation and
Pressure.It is both electro-hydraulic converting element and power amplification element, it can convert low power faint electrical input signal
For powerful hydraulic energy (flow and pressure) output, in electrohydraulic servo system, electric part is connect by it with hydraulic part
Get up, realize the conversion and hydraulic amplification of electro-hydraulic signal, electrohydraulic servo valve is the core of electrohydraulic servo system control.
Wherein armature component is the core component of servo valve, is determine servo valve using effect and service life decisive
Component.
Existing servo valve needs to test armature component before use, but existing test mode is because of armature
The specification of component is different, and the flexibility of test is poor, and test scope is limited, and for the armature component of irregular contour, lacks
Effective fixed form will cause test data deviation, and in armature component loading process, armature component inferior will appear components
Rupture event causes to splash, and makes to measure environmental security index reduction.
Summary of the invention
The purpose of the present invention is to provide a kind of servo valve armature component integral stiffness test devices, to solve above-mentioned background
Because the specification of armature component is different, the flexibility of test is poor for the existing test mode that proposes in technology, test scope by
Limit, and for the armature component of irregular contour, lack effective fixed form, will cause test data deviation, work as armature component
In loading process, armature component inferior will appear components rupture event, cause to splash, and make to measure asking for environmental security index reduction
Topic.
To achieve the above object, the invention provides the following technical scheme: a kind of servo valve armature component integral stiffness is tested
Device, including pedestal, support, limit plate pedestal, main slide bar, secondary slide bar and top plate, the intracavity bottom of the pedestal are fixedly mounted
The support is bolted to connection the limit plate pedestal, the used bolt in the top of the pedestal at the top of the pedestal
It is fixedly connected with the main slide bar and the secondary slide bar, has been bolted to connection at the top of the main slide bar and the secondary slide bar
The top plate, has been bolted to connection control cabinet at the top of the base plate, and the inner cavity top of the pedestal is through there is axis
Bar, the bottom thread of the shaft are connected with bar holder, and the bottom of the bar holder has been bolted to connection fishplate bar, described
Grooved hole is opened up at the top of fishplate bar and the support, the circumferential inner wall of the slot is plugged with main fishplate bar column and secondary fishplate bar column, institute
The bottom for stating support has been bolted to connection main brace frame plate and sub-strut frame plate, and the bottom of the main brace frame plate is welded with buffering
Spring, the bottom of the buffer spring are welded with looking for flat, and the screw top of the looking for flat is connected with levelling bolt, the limit
Limit plate has been bolted to connection at the top of board bottom seat, the left side wall integrated molding of the limit plate is connected with extemal plate,
The right side wall contact of the extemal plate has Die and mould plate, and main roof, the left side of the main roof are plugged at the top of the main slide bar
Wall is fixedly connected with main fan page by hinge, and secondary top plate is plugged at the top of the pair slide bar, and the right side wall of the pair top plate is logical
It crosses hinge and is fixedly connected with secondary flap, the left side wall of the right side wall of the main roof and the secondary top plate is bolted to connection
There is top plate, the bottom of the top plate has been bolted to connection main clamp and sub-folder tool.
Preferably, the structure of the sub-strut frame plate is identical with the structure of the main brace frame plate.
Preferably, the right side wall integrated molding of the Die and mould plate is connected with major trough and secondary slot, and the quantity of the limit plate is
Two.
Preferably, the outer circumferential walls contact of the Die and mould plate has a metal plate, the front side wall of the metal plate by screw with
The front side wall of the extemal plate is fixedly connected, and the quantity of the Die and mould plate is two.
Preferably, the inside of the metal plate is cavity, the depth of the cavity and the extemal plate it is of same size.
Preferably, the left and right sidewall of the limit plate pedestal offers circular hole, the diameter of the circular hole and the main slide bar
It is identical as the secondary diameter of slide bar.
Preferably, the front side wall of the main fan page opens up fluted, and the inner wall of the groove is inlaid with main filter, the master
The material of filter is metal plate.
Preferably, the front side wall of the secondary flap opens up fluted, and the inner wall of the groove is inlaid with secondary filter, the pair
The material of filter is metal plate.
Preferably, the bottom of the pedestal is welded with base plate.
Compared with prior art, the beneficial effects of the present invention are: this kind of servo valve armature component integral stiffness test device,
By the united application of accessory, Die and mould plate can be added on limit plate, Die and mould plate can complexed metal plate installed with limit plate
And disassembly, make armature component in carrying out test process, Die and mould plate can be carried out more according to the Outside Dimensions of different armature components
It changes, flexibility is big, and test scope is wide, makes the periphery of armature component that can be convenient for fixing with the major trough and secondary slot buckle on Die and mould plate
Main clamp and sub-folder tool is cooperated pull test afterwards, test effect is stablized, and test data is effective, and the external fan page added can be
In test process, limit Board position is blocked, prevents armature component splashing from damaging, it is highly-safe.
Detailed description of the invention
Fig. 1 is that the present invention connects structural schematic diagram；
Fig. 2 is base schematic diagram of the present invention；
Fig. 3 is chassis interior schematic diagram of the present invention；
Fig. 4 is fishplate bar schematic diagram of the present invention；
Fig. 5 is limit plate schematic diagram of the present invention.
In figure: 100 pedestals, 110 base plates, 120 shafts, 121 bar holders, 130 fishplate bars, 131 main fishplate bar columns, 132 pairs connect
Sheet-pile, 200 supports, 210 main brace frame plates, 220 buffer springs, 230 looking for flat, 231 levelling bolts, 240 sub-strut frame plates, 300 limits
Board bottom seat, 310 limit plates, 311 extemal plates, 320 Die and mould plates, 321 major troughs, 322 secondary slots, 330 metal plates, 400 main slide bars, 410
Main fan page, 420 main filters, 430 main rooves, 500 secondary slide bars, 510 secondary flaps, 520 secondary filters, 530 secondary top plates, 600 top plates,
610 main clamps, 620 sub-folders tool.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The present invention provides a kind of servo valve armature component integral stiffness test device, by the united application of accessory, can mention
High test accuracy, safety and applicability please refer to Fig. 1-5, including pedestal 100, support 200, limit plate pedestal 300, master
Slide bar 400, secondary slide bar 500 and top plate 600；
Referring to Fig. 1-4, the bottom of pedestal 100 has base plate 110, specifically, the bottom of pedestal 100 is welded with pedestal
Plate 110, for base plate 110 convenient for making pedestal 100 keep balance, the material of base plate 110 is alloy sheets, the top of base plate 110
It has been bolted to connection control cabinet, has included running equipment, battery and PAC in control cabinet, the inner cavity top of pedestal 100 passes through
It is installed with shaft 120, the bottom thread of shaft 120 is connected with bar holder 121, and bar holder 121 is convenient for external fixed, bar holder 121
Bottom be bolted to connection fishplate bar 130, fishplate bar 130 is convenient for cooperating main fishplate bar column 131 and secondary fishplate bar column 132 to be consolidated
Fixed, the top of fishplate bar 130 and support 200 opens up grooved hole, and the circumferential inner wall of slot is plugged with main fishplate bar column 131 and secondary fishplate bar column
132；
Referring to Fig. 4, the bottom of support 200 and the bottom of pedestal 100 are fixedly mounted, specifically, the interior bottom of chamber of pedestal 100
Support 200 is fixedly mounted in portion, and the bottom of support 200 has been bolted to connection main brace frame plate 210 and sub-strut frame plate 240, main
The bottom of support plate 210 is welded with buffer spring 220, and buffer spring 220 can carry out stress reduction, the bottom of buffer spring 220
It is welded with looking for flat 230, the screw top of looking for flat 230 is connected with levelling bolt 231；
Referring to Fig. 4-5, the bottom of limit plate pedestal 300 is contacted with the top of pedestal 100, specifically, the top of pedestal 100
Portion is bolted to connection limit plate pedestal 300, and the top of limit plate pedestal 300 has been bolted to connection limit plate
310, the left side wall integrated molding of limit plate 310 is connected with extemal plate 311, and the right side wall contact of extemal plate 311 has Die and mould plate
320, the right side wall integrated molding of Die and mould plate 320 is connected with major trough 321 and secondary slot 322, and the quantity of limit plate 310 is two, mould
The outer circumferential walls contact of tool plate 320 has metal plate 330, and the front side wall of metal plate 330 passes through the front side wall of screw and extemal plate 311
It is fixedly connected, the quantity of Die and mould plate 320 is two, and the material of Die and mould plate 320 is alloy sheets；
Referring to Fig. 1, the bottom of main slide bar 400 is contacted with the top of pedestal 100, specifically, the top of pedestal 100 is used
Bolt is fixedly connected with main slide bar 400, and the top of main slide bar 400 is plugged with main roof 430, and the left side wall of main roof 430 passes through conjunction
Page fixing is connected with main fan page 410, and the material of main fan page 410 is steel plate；
Referring to Fig. 1, the bottom of secondary slide bar 500 is contacted with the top of pedestal 100, specifically, the top of pedestal 100 is used
Bolt is fixedly connected with secondary slide bar 500, and the top of secondary slide bar 500 is plugged with secondary top plate 530, and the right side wall of secondary top plate 530 passes through conjunction
Page fixing is connected with secondary flap 510, and the material of secondary flap 510 is steel plate；
Referring to Fig. 1,500 grafting of the bottom of top plate 600 and main slide bar 400 and secondary slide bar, specifically, 400 He of main slide bar
The top of secondary slide bar 500 has been bolted to connection top plate 600, the left side wall of the right side wall of main roof 430 and secondary top plate 530
It is bolted to connection top plate 600, the bottom of top plate 600 has been bolted to connection main clamp 610 and sub-folder tool
620；
Specific in use, the art operator is first placed on the ground device, rely on the bottom of pedestal 100
Base plate 110 can directly be contacted with ground, then needing servo valve armature component to be tested to take out, by comparing armature
The size of component and Die and mould plate 320, after determining Die and mould plate 320, by 330 upper plenum of metal plate, the extemal plate of limit plate 310
It postpones in 311, is fixed using screw, during this process, it is ensured that the installation of Die and mould plate 320 is stablized, therewith armature component
The external major trough 321 on Die and mould plate 320 and secondary slot 322 are buckled, and after the top of armature component is exposed, are pushed up by control
Main clamp 610 in portion and sub-folder tool 620 come to being fixed at the top of armature component, then control main clamp by control cabinet
610 and sub-folder tool 620 move up, test is carried out to armature component and is pullled, while needing to main fan page 410 and secondary to fan by hinge
Page 510 is closed, and is blocked to 310 position of limit plate, is prevented during the test, unexpected components splashing feelings occur
Condition ensure that safety, and after 310 pedestal of limit plate, which is experienced, pulls power, the fishplate bar 130 that lower section is connect with support 200 can handle
It pulls power to be transmitted on main brace frame plate 210 and sub-strut frame plate 240, prevents limit plate 310 from being pullled offset, lead to the not smart of test
Really.
Referring to Fig. 5, in order to be fixedly connected with metal plate 330 effectively with extemal plate 311, specifically,
The inside of metal plate 330 is cavity, the depth of cavity and extemal plate 311 it is of same size.
Referring to Fig. 1, in order to connect limit plate pedestal 300 effectively with main slide bar 400 and secondary slide bar 500,
Specifically, the left and right sidewall of limit plate pedestal 300 offers circular hole, the diameter of circular hole and main slide bar 400 and secondary slide bar 500 it is straight
Diameter is identical.
Referring to Fig. 1, in order to being observed inside main fan page 410, specifically, the front side wall of main fan page 410 is opened
Equipped with groove, the inner wall of groove is inlaid with main filter 420, and the material of main filter 420 is metal plate.
Referring to Fig. 1, in order to being observed inside secondary flap 510, specifically, the front side wall of secondary flap 510 is opened
Equipped with groove, the inner wall of groove is inlaid with secondary filter 520, and the material of secondary filter 520 is metal plate.
Although hereinbefore invention has been described by reference to embodiment, the scope of the present invention is not being departed from
In the case where, various improvement can be carried out to it and can replace component therein with equivalent.Especially, as long as being not present
Structural conflict, the various features in presently disclosed embodiment can be combined with each other use by any way,
The description for not carrying out exhaustive to the case where these combinations in this specification is examined merely for the sake of omission length with what is economized on resources
Consider.Therefore, the invention is not limited to specific embodiments disclosed herein, but the institute including falling within the scope of the appended claims
There is technical solution.
Claims (9)
1. a kind of servo valve armature component integral stiffness test device, it is characterised in that: including pedestal (100), support (200),
Limit plate pedestal (300), main slide bar (400), secondary slide bar (500) and top plate (600), the intracavity bottom of the pedestal (100) are solid
Dingan County fills the support (200), and the limit plate pedestal (300), institute are bolted to connection at the top of the pedestal (100)
The used bolt in top for stating pedestal (100) is fixedly connected with the main slide bar (400) and the secondary slide bar (500), the main slide bar
(400) and at the top of the secondary slide bar (500) it has been bolted to connection the top plate (600), the base plate (110)
Top has been bolted to connection control cabinet, and the inner cavity top of the pedestal (100), which runs through, shaft (120), the shaft
(120) bottom thread is connected with bar holder (121), and the bottom of the bar holder (121) has been bolted to connection fishplate bar
(130), grooved hole is opened up at the top of the fishplate bar (130) and the support (200), the circumferential inner wall of the slot is plugged with master
Fishplate bar column (131) and secondary fishplate bar column (132), the bottom of the support (200) has been bolted to connection main brace frame plate (210)
It is welded with buffer spring (220) with the bottom of sub-strut frame plate (240), the main brace frame plate (210), the buffer spring (220)
Bottom be welded with looking for flat (230), the screw top of the looking for flat (230) is connected with levelling bolt (231), the limit plate
It has been bolted to connection at the top of pedestal (300) limit plate (310), the left side wall of the limit plate (310) is integrally formed
It is connected with extemal plate (311), the right side wall contact of the extemal plate (311) has Die and mould plate (320), the main slide bar (400)
Top is plugged with main roof (430), and the left side wall of the main roof (430) is fixedly connected with main fan page (410), institute by hinge
It states and is plugged at the top of secondary slide bar (500) secondary top plate (530), the right side wall of the pair top plate (530) is fixedly connected by hinge
Have secondary flap (510), the left side wall of the right side wall of the main roof (430) and the secondary top plate (530) is bolted company
It is connected to top plate (600), the bottom of the top plate (600) has been bolted to connection main clamp (610) and sub-folder tool (620).
2. a kind of servo valve armature component integral stiffness test device according to claim 1, it is characterised in that: the pair
The structure of support plate (240) is identical with the structure of the main brace frame plate (210).
3. a kind of servo valve armature component integral stiffness test device according to claim 1, it is characterised in that: the mould
The right side wall integrated molding of tool plate (320) is connected with major trough (321) and secondary slot (322), and the quantity of the limit plate (310) is two
It is a.
4. a kind of servo valve armature component integral stiffness test device according to claim 1, it is characterised in that: the mould
The outer circumferential walls contact of tool plate (320) has metal plate (330), and the front side wall of the metal plate (330) passes through screw and described outer
The front side wall of fishplate bar (311) is fixedly connected, and the quantity of the Die and mould plate (320) is two.
5. a kind of servo valve armature component integral stiffness test device according to claim 4, it is characterised in that: the gold
The inside for belonging to plate (330) is cavity, the depth of the cavity and the extemal plate (311) it is of same size.
6. a kind of servo valve armature component integral stiffness test device according to claim 1, it is characterised in that: the limit
The left and right sidewall of position board bottom seat (300) offers circular hole, the diameter of the circular hole and the main slide bar (400) and the secondary slide bar
(500) diameter is identical.
7. a kind of servo valve armature component integral stiffness test device according to claim 1, it is characterised in that: the master
The front side wall of fan page (410) opens up fluted, and the inner wall of the groove is inlaid with main filter (420), the main filter (420)
Material is metal plate.
8. a kind of servo valve armature component integral stiffness test device according to claim 1, it is characterised in that: the pair
The front side wall of fan page (510) opens up fluted, and the inner wall of the groove is inlaid with secondary filter (520), the pair filter (520)
Material is metal plate.
9. a kind of servo valve armature component integral stiffness test device according to claim 1, it is characterised in that: the bottom
The bottom of seat (100) is welded with base plate (110).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910341535.8A CN110057572B (en) | 2019-04-26 | 2019-04-26 | Servo valve armature subassembly comprehensive rigidity testing arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910341535.8A CN110057572B (en) | 2019-04-26 | 2019-04-26 | Servo valve armature subassembly comprehensive rigidity testing arrangement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110057572A true CN110057572A (en) | 2019-07-26 |
| CN110057572B CN110057572B (en) | 2020-09-08 |
Family
ID=67320896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910341535.8A Active CN110057572B (en) | 2019-04-26 | 2019-04-26 | Servo valve armature subassembly comprehensive rigidity testing arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110057572B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101446532A (en) * | 2008-12-19 | 2009-06-03 | 上海诺玛液压***有限公司 | Servo valve armature component suspension stiffness testing device |
| CN103487223A (en) * | 2013-09-18 | 2014-01-01 | 浙江工业大学 | Device for measuring flexural rigidity of structural member in high-low temperature environments |
| EP2784326A1 (en) * | 2013-03-25 | 2014-10-01 | Skf Magnetic Mechatronics | Compact turbomachine with magnetic bearings and auxiliary bearings |
| CN207729162U (en) * | 2018-01-09 | 2018-08-14 | 刘善良 | A kind of electromechanical equipment support base with clamp system |
| CN108776063A (en) * | 2018-08-21 | 2018-11-09 | 普雷沃流体控制科技（芜湖）有限公司 | A kind of valve rigidity compression tester |
| CN208109368U (en) * | 2018-05-11 | 2018-11-16 | 东风德纳车桥有限公司 | A kind of air spring rigidity characteristic test apparatus |
| CN109580139A (en) * | 2018-12-14 | 2019-04-05 | 上海航天控制技术研究所 | A kind of servo valve armature component integral stiffness test device |
-
2019
- 2019-04-26 CN CN201910341535.8A patent/CN110057572B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101446532A (en) * | 2008-12-19 | 2009-06-03 | 上海诺玛液压***有限公司 | Servo valve armature component suspension stiffness testing device |
| EP2784326A1 (en) * | 2013-03-25 | 2014-10-01 | Skf Magnetic Mechatronics | Compact turbomachine with magnetic bearings and auxiliary bearings |
| CN103487223A (en) * | 2013-09-18 | 2014-01-01 | 浙江工业大学 | Device for measuring flexural rigidity of structural member in high-low temperature environments |
| CN207729162U (en) * | 2018-01-09 | 2018-08-14 | 刘善良 | A kind of electromechanical equipment support base with clamp system |
| CN208109368U (en) * | 2018-05-11 | 2018-11-16 | 东风德纳车桥有限公司 | A kind of air spring rigidity characteristic test apparatus |
| CN108776063A (en) * | 2018-08-21 | 2018-11-09 | 普雷沃流体控制科技（芜湖）有限公司 | A kind of valve rigidity compression tester |
| CN109580139A (en) * | 2018-12-14 | 2019-04-05 | 上海航天控制技术研究所 | A kind of servo valve armature component integral stiffness test device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110057572B (en) | 2020-09-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103217266A (en) | System and method for synchronously acquiring load and response signals of machine tool vibration test | |
| CN110057572A (en) | A kind of servo valve armature component integral stiffness test device | |
| CN112310543A (en) | New forms of energy battery box that shock attenuation performance is good | |
| CN105655848A (en) | Feeding and taking device for insulators in coaxial cable connectors | |
| CN201002224Y (en) | Assembly clamp for car fender | |
| CN110000805A (en) | A kind of clamping device for the detection of New energy automobile motor gearbox offline | |
| CN208342088U (en) | Circuit board repair fixture | |
| CN109932193A (en) | A kind of adjustable electric tail-gate system durability test equipment | |
| CN109050234A (en) | A kind of fixed device of power battery pack and automobile | |
| CN106323573B (en) | A kind of large-scale vibrating test tool | |
| CN212410794U (en) | Tool clamp for simulating load operation of motor | |
| CN208847474U (en) | High speed electric machine base tooling for automobile gearbox testboard bay | |
| CN207479927U (en) | A kind of driver's cabin mounting base welding tooling | |
| CN208190385U (en) | A kind of electric machine of numerically controlled machine fixing seat | |
| CN207554532U (en) | A kind of train fixed plate with nut anti-looseness line | |
| CN213874877U (en) | Anti-seismic testing tool for electronic product | |
| CN205940352U (en) | Frock of shelves size and axiality is opened to short -term test spare part | |
| CN108801766A (en) | A kind of portable harness tensile testing machine | |
| CN110455513A (en) | Turntable experimental rig and system | |
| CN204584697U (en) | The mounting tool of milling attachment | |
| CN215581999U (en) | Electrical cabinet for electrical engineering | |
| CN216117132U (en) | Concrete pole chuck testing arrangement | |
| CN202547681U (en) | Calibration device for tensile and compressive loads of test bench | |
| CN221078713U (en) | Sensor mounting assembly for new energy battery packaging line | |
| CN215153903U (en) | Automobile engine mounting bracket with abdicating hole |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A comprehensive stiffness testing device for servo valve armature components Effective date of registration: 20230922 Granted publication date: 20200908 Pledgee: China Postal Savings Bank Co.,Ltd. Lai'an County Branch Pledgor: ANHUI WANRONG SPACEFLIGHT EQUIPMENT CO.,LTD. Registration number: Y2023980058141 |