CN206270150U - For the testing machine for mechanical properties of antiglare shield detection - Google Patents
For the testing machine for mechanical properties of antiglare shield detection Download PDFInfo
- Publication number
- CN206270150U CN206270150U CN201621237292.1U CN201621237292U CN206270150U CN 206270150 U CN206270150 U CN 206270150U CN 201621237292 U CN201621237292 U CN 201621237292U CN 206270150 U CN206270150 U CN 206270150U
- Authority
- CN
- China
- Prior art keywords
- frame
- mechanical properties
- antiglare shield
- testing machine
- motor
- 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.)
- Active
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 44
- 238000001514 detection method Methods 0.000 title claims abstract description 19
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 21
- 239000010959 steel Substances 0.000 claims abstract description 21
- 229910000679 solder Inorganic materials 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000008859 change Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 244000131316 Panax pseudoginseng Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model is related to a kind of testing machine for mechanical properties for antiglare shield detection, and it belongs to testing equipment technical field.The utility model includes flat board, riser, electrical control cabinet, frame, leading block, steel wire rope, sliding block, guide rail, motor, leading screw, motor driver, guide type shoe, pulling force sensor and hook, flat board is mounted in frame top, riser is mounted in frame inner side, electrical control cabinet is mounted in shell outside, motor driver is on flat board, motor driver is matched with motor, rotor of the leading screw one end through motor, the other end is connected with guide type shoe and pulling force sensor successively, hook is connected with pulling force sensor, guide rail is fixed on riser, guide type shoe one end is connected with leading screw, the other end is connected with sliding block, leading block is in frame, steel wire rope one end is connected with hook, the other end bypasses leading block and is connected with antiglare shield to be detected.The utility model simple structure, transmission efficiency, good reliability, low cost of manufacture is installed and safeguards easy.
Description
Technical field
The utility model is related to a kind of testing machine for mechanical properties, and in particular to a kind of mechanical property for antiglare shield detection
Testing machine, it belongs to testing equipment technical field.
Background technology
Antiglare shield is to solve to car light dazzle, a kind of traffic safety on central strip band on highway
Product.It is arranged at antiglare shield on Expressway Central Strip guardrail or in the middle of guardrail more, also there are some centrally disposed openings
On movable rail.
China is that the whole world uses the most country of antiglare shield, and the specification and species of antiglare shield are a lot.Either what is former
Material, moulding process or structure type, blow constantly, hit constantly, nondiscolouring should be all qualified antiglare shields basic three will
Element, also only under the precondition for meeting the basic three elements, could finally determine that can antiglare shield wide on a highway
General application.
China's standard GB/T/T 24718-2009《Antiglare shield》In its technical requirements " 4.2 physicochemical property " part clearly
The technical requirements of anti-dazzle panel products " wind resistance load F " and " resistance to deformation amount R " the two mechanical property projects are defined, and in its examination
The examination of " wind resistance load F " and " resistance to deformation amount R " the two projects of proved recipe method " 5.5.3 overall mechanical properties " part clear stipulaties
Test program.But, the testing equipment needed on testing the two mechanical property projects, the national standard is only in its " 5.3 experiment
It is simple in instrument and equipment " part to define in short " testing machine for mechanical properties：Should meet 5.1 in GB/T 1446-2005
Regulation ", does not make more detailed regulation to " testing machine for mechanical properties ".
Therefore, according to GB GB/T 24718-2009《Antiglare shield》Technical requirements, exploitation is a kind of for antiglare shield detection
Testing machine for mechanical properties, as carry out antiglare shield mechanical property test standard detecting devices, to solve antiglare shield power conscientiously
Learn the indefinite present situation of performance test testing equipment, it appears particularly necessary.
Publication date is on December 11st, 2013, in the Chinese patent of Publication No. 204043626U, discloses a kind of title
It is the utility model patent of " a kind of resistance to deformation measuring device of antiglare shield ".The patent includes fixed pulley, draught line, standard
Fixture, highly with position adjustable test platform, high precision laser range finder, height adjustable tripod, sample, concrete bottom
The sliding beam of seat, electronic tensile machine and electronic tensile machine.High precision laser range finder distance-finding method replaces the projection in standard
Method, it is to avoid be deformed because contacting sample in test, in addition, whole test device is once installed, just
Need not make any adjustments, different tests need to only change sample, and test is also in itself by observing laser range finder come complete
Into, although the device can be accurately positioned measured position, facilitate simple and direct；But antiglare shield mechanical property test inspection can not be carried out
Survey, and operation and detection inconvenience, detection range is not wide, therefore itself or existing defects.
Utility model content
The purpose of this utility model is to overcome above shortcomings in the prior art, and provides a kind of structure design letter
Single rationally reliability and durability, low cost of manufacture is easy to operate, the testing machine for mechanical properties for antiglare shield detection easy to maintenance.
The technical scheme in the invention for solving the above technical problem is：This is used for the mechanical property examination of antiglare shield detection
Machine, including flat board, riser, electrical control cabinet and frame are tested, the flat board is arranged on the top of frame, and riser is arranged on frame
Medial surface, electrical control cabinet is arranged on the lateral surface of frame, it is characterised in that：Also include leading block, steel wire rope, sliding block, lead
Rail, motor, leading screw, motor driver, guide type shoe, pulling force sensor and hook, the rotor of the motor is the insertion of nut
Formula linear stepping motor, motor driver is arranged on flat board, and the motor driver is matched with motor, and one end of leading screw is through electricity
The nut rotor of machine simultaneously constitutes feed screw nut kinematic pair with it, and the other end of leading screw connects with guide type shoe and pulling force sensor successively
Connect, hook is connected with pulling force sensor, and guide rail is fixed on riser, and one end of guide type shoe is connected with leading screw, the guide type shoe
The other end be connected with sliding block, sliding block and guide rail cannot be rotated with line slideway kinematic pair, limitation leading screw is combined into so that leading screw
Can only do and up and down reciprocatingly move along a straight line, leading block is arranged in frame, one end of steel wire rope is connected with hook, the steel wire rope
The other end bypasses leading block and is fixedly connected with antiglare shield to be detected；Total is reliability and durability, low cost of manufacture, operation letter
Just, motor direct-drive leading screw does and up and down reciprocatingly moves along a straight line, and leading screw pulls steel wire rope to move back and forth.
Preferably, the upper end of pulling force sensor described in the utility model is fixed with leading screw, the lower end of the pulling force sensor
Fixed with hook.
Preferably, leading block described in the utility model is arranged in frame by screw bolt and nut；For changing steel
The direction of pulling force suffered by cord.
Preferably, guide rail described in the utility model is bolted on riser.
Preferably, motor driver described in the utility model is arranged on flat board by bolt；For controlling to drive electricity
Machine.
Preferably, flat board described in the utility model is arranged on frame top by screw bolt and nut.
Preferably, riser described in the utility model is arranged on frame medial surface by screw bolt and nut.
Preferably, electrical control cabinet described in the utility model is arranged on shell outside face by screw bolt and nut；In it
Portion is provided with the control system of the testing machine for mechanical properties, the running status for controlling the testing machine for mechanical properties.
Preferably, frame described in the utility model be integral solder frame, the frame by various different models shaped steel
It is welded.
The utility model compared with prior art, with advantages below and effect：1st, technology, nothing are directly driven in transmission system application
Intermediate reduction gear mechanism, is done using the armature nut direct drive leading screw of through linear stepping motor and up and down reciprocatingly moved along a straight line,
Improve the transmission efficiency and its reliability of system；2nd, simple structure, transmission system is simplified, low cost of manufacture, is installed and is safeguarded appearance
Easily；3rd, the operational mode of testing machine for mechanical properties can be changed by the control system regulation parameter in electrical control cabinet, without
Any machinery adjustment, regulation parameter is simple, convenient.
Brief description of the drawings
Fig. 1 is the testing machine for mechanical properties axle geodesic structure schematic diagram of the utility model embodiment.
Fig. 2 is the testing machine for mechanical properties positive structure diagram of the utility model embodiment.
Fig. 3 is the testing machine for mechanical properties partial enlargement structural representation of the utility model embodiment.
In figure：Frame 1, leading block 2, steel wire rope 3, riser 4, sliding block 5, guide rail 6, flat board 7, motor 8, leading screw 9, motor
Driver 10, guide type shoe 11, pulling force sensor 12, electrical control cabinet 13, hook 14.
Specific embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings and by embodiment, and following examples are right
It is of the present utility model explanation and the utility model is not limited to following examples.
Embodiment.
Referring to Fig. 1 to Fig. 3, the present embodiment be used for antiglare shield detection testing machine for mechanical properties mainly include leading block 2,
Steel wire rope 3, sliding block 5, guide rail 6, motor 8, leading screw 9, motor driver 10, guide type shoe 11, pulling force sensor 12 and hook 14.
Flat board 7 in the present embodiment is arranged on the top of frame 1, and riser 4 is arranged on the medial surface of frame 1, electrical control
Cabinet 13 is arranged on the lateral surface of frame 1, and motor driver 10 is arranged on flat board 7, and the motor driver 10 is matched with motor 8,
One end of leading screw 9 through motor 8 nut rotor and with it constitute feed screw nut kinematic pair, the other end of leading screw 9 successively with lead
Connected to bearing 11 and pulling force sensor 12, hook 14 is connected with pulling force sensor 12, and guide rail 6 is fixed on riser 4, sliding block 5
Coordinate with the guide rail 6, one end of guide type shoe 11 is connected with leading screw, the other end of the guide type shoe 11 is connected with sliding block 5, sliding block
5 cannot rotate with guide rail 6 with line slideway kinematic pair, limitation leading screw 9 is combined into so that leading screw 9 can only do up and down reciprocatingly straight line
Motion, leading block 2 is arranged in frame 1, and one end of steel wire rope 3 is connected with linking up with 14, the other end of the steel wire rope 3 with bypass
Leading block 2 is fixedly connected with antiglare shield to be detected.
The upper end of the pulling force sensor 12 in the present embodiment is fixed with leading screw 9, lower end and the hook of the pulling force sensor 12
14 fix.
Leading block 2 in the present embodiment is arranged in frame 1 by screw bolt and nut；For changing suffered by steel wire rope 3
The direction of pulling force.
Guide rail 6 in the present embodiment is bolted on riser 4；Motor driver 10 is arranged on flat board by bolt
On 7；Flat board 7 is arranged on the top of frame 1 by screw bolt and nut；Riser 4 is arranged on the medial surface of frame 1 by screw bolt and nut.
Electrical control cabinet 13 in the present embodiment is arranged on the lateral surface of frame 1 by screw bolt and nut；It is provided with inside it
The control system of the testing machine for mechanical properties, the running status for controlling the testing machine for mechanical properties.
Frame 1 in the present embodiment is integral solder frame, and the frame 1 is welded by the shaped steel of various different models,
Simple structure, it is solid and reliable.
Motor 8 in the present embodiment is through linear stepping motor, and the rotor of the through linear stepping motor 8 is one
Individual nut, leading screw 9 is applied in the nut interior and constitutes feed screw nut kinematic pair with it.
Leading block 2, steel wire rope 3, sliding block 5, guide rail 6, through linear stepping motor 8, leading screw 9 in the present embodiment,
Guide type shoe 11, pulling force sensor 12 and hook 14 have collectively constituted the transmission system of the testing machine for mechanical properties.
Operation principle of the present utility model is：Using through linear stepping motor 8 as power source, electrical control cabinet 13
In control system control the nut of through linear stepping motor 8 to do rotating by certain rotating speed by motor driver 10
Motion, nut drives leading screw 9 to do and up and down reciprocatingly moves along a straight line, and leading screw 9 pulls steel wire rope 3 to move back and forth, steel wire rope 3
The other end bypasses leading block 2 and at the uniform velocity pulls or unclamp antiglare shield, and monitors pulling force load by the real-time synchronization of pulling force sensor 12
Lotus, you can realize antiglare shield mechanical property test.
The present embodiment is using through linear stepping motor 8 as power source, the rotor spiral shell of through linear stepping motor 8
Mother's direct drive leading screw 9 is done and up and down reciprocatingly moves along a straight line, and technology is directly driven in transmission system application, eliminates cumbersome intermediate reduction gear machine
Structure, improves the transmission efficiency and its reliability of the testing machine for mechanical properties transmission system.
The present embodiment simple structure, transmission system is simplified, except frame 1, riser 4, flat board 7 and guide type shoe 11 need voluntarily
Beyond welding or machining, remaining parts is all the universal standard part that directly can be purchased from the market, low cost of manufacture, peace
Dress is safeguarded easy.
The present embodiment can change testing machine for mechanical properties by the control system regulation parameter in electrical control cabinet 13
Operational mode, without any machinery adjustment, regulation parameter is simple, convenient.
The present embodiment possesses simple structure, and transmission system is simplified, transmission efficiency, good reliability, low cost of manufacture, adjusts ginseng
It is convenient, the advantages of safeguarding easy is installed, it is very suitable for as the standard detecting devices for carrying out antiglare shield mechanical property test.
By above-mentioned elaboration, those skilled in the art can implement.
Furthermore, it is necessary to explanation, the specific embodiment described in this specification, is named the shape of its parts and components
Claiming etc. can be with difference, and the above content described in this specification is only to the utility model structure example explanation.
Equivalence changes or simple change that construction, feature and principle described in all foundation the utility model inventional ideas are done, wrap
Include in the protection domain of the utility model patent.The utility model person of ordinary skill in the field can be to described
Specific embodiment is made various modifications or supplement or is substituted using similar mode, without departing from knot of the present utility model
Structure surmounts scope defined in the claims, all should belong to protection domain of the present utility model.
Claims (9)
1. a kind of testing machine for mechanical properties for antiglare shield detection, including flat board, riser, electrical control cabinet and frame are described
Flat board is arranged on the top of frame, and riser is arranged on the medial surface of frame, and electrical control cabinet is arranged on the lateral surface of frame, and it is special
Levy and be：Also include leading block, steel wire rope, sliding block, guide rail, motor, leading screw, motor driver, guide type shoe, pull sensing
Device and hook, it is the through linear stepping motor of nut that the motor uses rotor, and motor driver is arranged on flat board, should
Motor driver is matched with motor, and one end of leading screw runs through the nut rotor of motor and constitutes feed screw nut kinematic pair, silk with it
The other end of thick stick is connected with guide type shoe and pulling force sensor successively, and hook is connected with pulling force sensor, and guide rail is fixed on riser
On, one end of guide type shoe is connected with leading screw, and the other end of the guide type shoe is connected with sliding block, and sliding block is straight with being combined into guide rail
Line guide rail kinematic pair, leading block is arranged in frame, and one end of steel wire rope is connected with hook, and the other end of the steel wire rope is bypassed
Leading block is fixedly connected with antiglare shield to be detected.
2. it is according to claim 1 for antiglare shield detection testing machine for mechanical properties, it is characterised in that：The pulling force is passed
The upper end of sensor is fixed with leading screw, and lower end and the hook of the pulling force sensor are fixed.
3. it is according to claim 1 for antiglare shield detection testing machine for mechanical properties, it is characterised in that：Described guiding is slided
Wheel is arranged in frame by screw bolt and nut.
4. it is according to claim 1 for antiglare shield detection testing machine for mechanical properties, it is characterised in that：The guide rail leads to
Cross and be bolted on riser.
5. it is according to claim 1 for antiglare shield detection testing machine for mechanical properties, it is characterised in that：The motor drives
Dynamic device is arranged on flat board by bolt.
6. it is according to claim 1 for antiglare shield detection testing machine for mechanical properties, it is characterised in that：The flat board leads to
Screw bolt and nut is crossed installed in frame top.
7. it is according to claim 1 for antiglare shield detection testing machine for mechanical properties, it is characterised in that：The riser leads to
Screw bolt and nut is crossed installed in frame medial surface.
8. it is according to claim 1 for antiglare shield detection testing machine for mechanical properties, it is characterised in that：The electric-controlled
Cabinet processed is arranged on shell outside face by screw bolt and nut.
9. it is according to claim 1 for antiglare shield detection testing machine for mechanical properties, it is characterised in that：The frame is
Integral solder frame, the frame is welded by the shaped steel of various different models.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621237292.1U CN206270150U (en) | 2016-11-18 | 2016-11-18 | For the testing machine for mechanical properties of antiglare shield detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621237292.1U CN206270150U (en) | 2016-11-18 | 2016-11-18 | For the testing machine for mechanical properties of antiglare shield detection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206270150U true CN206270150U (en) | 2017-06-20 |
Family
ID=59041305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621237292.1U Active CN206270150U (en) | 2016-11-18 | 2016-11-18 | For the testing machine for mechanical properties of antiglare shield detection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206270150U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106644688A (en) * | 2016-11-18 | 2017-05-10 | 浙江省机电设计研究院有限公司 | Mechanical property testing machine used for detection of anti-dazzle board |
| CN107340188A (en) * | 2017-09-05 | 2017-11-10 | 厦门安科科技有限公司 | A kind of strength test device of the anti-fall guide bracket of climbing frame |
| CN109085053A (en) * | 2018-08-21 | 2018-12-25 | 北京市公路桥梁建设集团锐诚工程试验检测有限公司 | Antiglare shield wind resistance test device |
| CN112630029A (en) * | 2020-12-15 | 2021-04-09 | 陕西航天技术应用研究院有限公司 | Meshed fabric mechanical property testing device |
-
2016
- 2016-11-18 CN CN201621237292.1U patent/CN206270150U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106644688A (en) * | 2016-11-18 | 2017-05-10 | 浙江省机电设计研究院有限公司 | Mechanical property testing machine used for detection of anti-dazzle board |
| CN107340188A (en) * | 2017-09-05 | 2017-11-10 | 厦门安科科技有限公司 | A kind of strength test device of the anti-fall guide bracket of climbing frame |
| CN107340188B (en) * | 2017-09-05 | 2023-04-28 | 厦门安科科技有限公司 | Intensity test device of anti-falling guide seat for climbing frame |
| CN109085053A (en) * | 2018-08-21 | 2018-12-25 | 北京市公路桥梁建设集团锐诚工程试验检测有限公司 | Antiglare shield wind resistance test device |
| CN109085053B (en) * | 2018-08-21 | 2021-01-29 | 北京市公路桥梁建设集团锐诚工程试验检测有限公司 | Anti-wind performance testing device for anti-dazzle plate |
| CN112630029A (en) * | 2020-12-15 | 2021-04-09 | 陕西航天技术应用研究院有限公司 | Meshed fabric mechanical property testing device |
| CN112630029B (en) * | 2020-12-15 | 2024-01-19 | 陕西航天技术应用研究院有限公司 | Net-shaped fabric mechanical property testing device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206270150U (en) | For the testing machine for mechanical properties of antiglare shield detection | |
| CN110252560A (en) | A kind of mobile mixed connection spray robot for high-speed rail car body coating | |
| CN106644688A (en) | Mechanical property testing machine used for detection of anti-dazzle board | |
| CN109406172A (en) | A kind of soil bin test device suitable for wheels travel performance test | |
| CN201096569Y (en) | Test stand for engines belt tension measuring | |
| CN206192652U (en) | Planet ball screw pair 's biaxial loadings device | |
| CN107741369A (en) | A kind of rope fatigue wear test device of adjustable cornerite | |
| CN103558548A (en) | Multifunctional servo motor performance testing device and testing system thereof | |
| CN104931177B (en) | A kind of hasp opening force on-line measuring device | |
| CN206696306U (en) | A kind of current meter calibration equipment | |
| CN207095845U (en) | A kind of variable working condition fretting wear combined test apparatus | |
| CN210071513U (en) | Intensity detection device of nitrile-butadiene latex gloves | |
| CN104089773B (en) | Reel sprinkling irrigation machine transmission system efficiency assay device and method | |
| CN207020013U (en) | Agricultural V bands fatigue tester | |
| CN110618035B (en) | Shock attenuation backing plate tensile test device | |
| CN202522218U (en) | High-precision air-pressure-type cable meter counter | |
| CN108267376B (en) | Rolling-sliding-torsion experimental device | |
| CN201864406U (en) | Photosensitizing type sensor safety device of elevator | |
| CN209372579U (en) | A kind of Compound Fabric production flexibility detection device | |
| CN106768539A (en) | The biaxial loadings device and loading method of planetary roller screw pair | |
| CN206930557U (en) | Rail mounted mist droplet deposition drift test platform in a kind of agricultural unmanned plane room | |
| CN207066925U (en) | A kind of automatic Mooney viscosity test device | |
| CN207358185U (en) | A kind of machine tool chief axis running test platform that can simulate working condition | |
| CN106680712B (en) | A kind of linear electric generator test platform | |
| CN111854854B (en) | Comprehensive inspection tool for sun-shading curtain of automobile skylight |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240618 Address after: No. 87 Yan'an Road, Hangzhou City, Zhejiang Province, 310005 Patentee after: ZHEJIANG INSTITUTE OF MECHANICAL & ELECTRICAL ENGINEERING Co.,Ltd. Country or region after: China Patentee after: Zhejiang mechanical and electrical product quality inspection Institute Co.,Ltd. Address before: No. 125 Miaohouwang Road, Xixing Town, Binjiang District, Hangzhou City, Zhejiang Province (at the entrance of the South Ring Road Baimahu Tunnel) Patentee before: ZHEJIANG INSTITUTE OF MECHANICAL & ELECTRICAL ENGINEERING Co.,Ltd. Country or region before: China Patentee before: ZHEJIANG TESTING & INSPECTION INSTITUTE FOR MECHANICAL AND ELECTRICAL PRODUCTS QUALITY |