CN109702668A - A kind of wire conductor resistance test special fixture and its application method - Google Patents
A kind of wire conductor resistance test special fixture and its application method Download PDFInfo
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- CN109702668A CN109702668A CN201910085157.1A CN201910085157A CN109702668A CN 109702668 A CN109702668 A CN 109702668A CN 201910085157 A CN201910085157 A CN 201910085157A CN 109702668 A CN109702668 A CN 109702668A
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Abstract
The invention discloses a kind of wire conductor resistance test special fixtures, including testing stand, pressure sensor, control device and fixture, the fixture sets there are two and is symmetrical set at the both ends of the testing stand, the fixture includes fixing to clamp portion and movable clamping portion, described two portions of fixing to clamp are fixedly mounted on the testing stand, described two movable clamping portions are connected with the first driving device with first motor for keeping the movable clamping portion mobile, pressure sensor is installed in described two movable clamping portions, the pressure sensor is used to detect the pressure change that electric wire is subject to be stopped triggering the first motor, the pressure sensor is connected with the control device.The shortcomings that present invention is fixed electric wire by using pressure sensor, and avoiding the too small electric wire of pressure cannot be fixed well, and pressure is excessive to be led to electric wire deformation and then influence measuring accuracy, alleviates the workload of experimenter, improves test accuracy.
Description
Technical field
The present invention relates to resistance test technical fields, and in particular to a kind of wire conductor resistance test special fixture and its makes
Use method.
Background technique
Being constantly progressive and develop, the continuous propulsion of urban distribution network insulating, cable, aerial insulated cable with society
It increases sharply with the quantity of power cable isoelectric line cable, either daily life electricity consumption or industrial production electricity consumption, nothing is not required to
It will be by the important function of wire and cable.Therefore the performance of wire and cable is directly related to the final electricity consumption and production effect of user
Fruit, and the conductor DC resistance detection for carrying out wire and cable is even more the most important thing.Electric wire and cable conductor D.C. resistance is characterization electricity
One of the important indicator of cable electric property, and conductor DC resistance test is the main means for examining conductor electric conductivity, accurately
Electric wire and cable conductor D.C. resistance is measured to the safe handling important role of wire and cable.
In the prior art, measurement electric wire and cable conductor D.C. resistance generally uses double bridge or DC current-voltage
The digital direct resistance test equipment measurement of direct method is dropped, and using the special measurement fixture subsidiary of four-terminal measurement technology.Four ends
Measured material has the following problems: since measurement electric wire and cable conductor D.C. resistance needs the length between accurate measurement current potential collet
Degree, and wire and cable inevitably has certain buckling phenomenon, needs for cable to be straightened, but cannot have any cause
The changed distortion in cable conductor cross section, the four-terminal measurement fixture potential electrode for measuring wire and cable in the market are generally fixed
It is 1 meter, measurement length is extremely limited, this just affects the precision of linear measure longimetry.
In order to solve problem above, various measures are taken in the prior art.Through retrieving, application number 201310049266
Chinese invention patent discloses a kind of resistivity measurement fixture of silver alloy wire rod, including bottom plate, current terminal and hold-down bolt,
The upper end two sides of the bottom plate are symmetrically installed with current terminal, and the lower end stud of the current terminal passes through bottom plate and locking
Nut, the intermediate lateral of the current terminal are provided with through-hole, and the upper end of the current terminal is vertically equipped with hold-down bolt,
The lower end of the hold-down bolt is communicated with through-hole, and there are two potential ends for opposite installation on the bottom plate between the clamp column
Son.The configuration of the present invention is simple, it is easy for installation, can the resistivity quickly to contact wire rod test, saved the testing time.
When carrying out conductor resistance parameter experiment to electric wire, the both ends for cutting out electric wire are put on fixture the device by use,
Step up fixture by can be manually rotated knob (rotation turntable), this not only adds the workload of experimenter, and each hand
Dynamic clamping electric wire grip force can unevenly make test generate error, cause measurement result inaccurate.Moreover, the device is without electricity
Mechanism is straightened in line, needs manually to be straightened, and increases labor intensity to testing crew, time-consuming and laborious.
Summary of the invention
In order to solve above-mentioned one of defect existing in the prior art, it is dedicated to provide a kind of wire conductor resistance test
Fixture and its application method.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of wire conductor resistance test special fixture, including testing stand, pressure sensor, control device and fixture, institute
It states fixture to set there are two and be symmetrical set at the both ends of the testing stand, the fixture includes fixing to clamp portion and movable clamping
Portion, described two portions of fixing to clamp are fixedly mounted on the testing stand, and described two movable clamping portions, which are connected with, makes the activity
The mobile first driving device with first motor in clamping section is equipped with pressure sensor in described two movable clamping portions, institute
State pressure sensor and stop for detecting pressure change that electric wire is subject to trigger the first motor, the pressure sensor with
The control device.
Preferably, the first driving device further include:
First bevel gear, the first bevel gear are connected with the output shaft of the first motor；
Second bevel gear, the second bevel gear are meshed with the first bevel gear；
Screw rod, the bottom end of the screw rod are set with the second bevel gear, are also fitted with nut on the screw rod；
Cross bar, described cross bar one end are connected with the nut；
Connecting rod, there are two the connecting rod is set, on the cross bar, the other end connects for described two connecting rod one end connections
Meet the movable clamping portion；
Guide plate, the guide plate is interior to be equipped with guide groove, and the guide plate lower end is mutually fixedly connected with the testing stand, institute
It states and passes through the cross bar in guide groove, the guide groove inner wall is fitted closely with the cross bar.
Preferably, the control device includes controller and display, and the reception of acquisition pressure is equipped in the controller
Module, conversion module, display analysis module, control module, the receiving module are connected with the pressure sensor, the control
Module is connect by control line with the first motor phase control, and the display analysis module passes through display line and the display
It is connected.
Preferably, the receiving module is used to receive the pressure value that pressure sensor measures, and the conversion module is used to will
The pressure value is converted to figure and number, and the display analysis module is used to analyze the figure and number, then will divide
Analysis result passes to the control module in a manner of instructing, and the control module controls the first motor by described instruction
Stop, the figure and number are shown on the display by the display analysis module.
Preferably, the first motor has the function of forward and reverse.
Preferably, described fix to clamp is additionally provided with groove in portion.
Preferably, the testing stand both ends, which are respectively equipped with, is straightened idler wheel, and the idler wheel that is straightened is symmetrical set, it is described wherein
One is straightened idler wheel and is connected with the second driving device.
Preferably, the idler wheel that is straightened is equipped with through-hole and threaded hole, and the through-hole is mutually passed through with the threaded hole, the spiral shell
Cooperation is equipped with bolt in pit.
A kind of application method of wire conductor resistance test special fixture, comprising the following steps:
(1) in use, electric wire is placed in the groove fixed to clamp in portion；
(2) both ends of electric wire are respectively protruding into the through-hole that idler wheel is straightened；
(3) bolt is screwed in threaded hole, until electric wire both ends are secured in a press；
(4) the second driving device of idler wheel is straightened in starting, and electric wire is slowly straightened, and protects electric wire sample along fixture contact surface
Maintain an equal level straight, no bending is then turned off the second driving device；
(5) start first motor, drive movable clamping portion to move down by first driving device, movable clamping portion drives
Pressure sensor slowly acts on electric wire, and the value for measuring pressure is passed through conversion module for pressure by receiving line by receiving module
Value is converted into the pressure versus time linear graph of electric wire, and before electric wire does not deform, pressure changes linearly at any time, when electric wire goes out
When line deforms, pressure is not changed linearly with the time, show analysis module can in δ t time interval continuous detection curve always
Slope, when slope changes, display analysis module can issue shuts down first motor instruction, and feed back arrive control module,
Control module passes through the power supply of control line traffic control first motor, and forced interruption shuts down first motor, and pressure sensor stops at this time
Work, electric wire are completed electric wire fixation and work are straightened by intact fixation.
Compared with prior art, the beneficial effects of the present invention are:
1. the present invention is fixed electric wire by using pressure sensor, avoiding the too small electric wire of pressure cannot be fine
Fixation, pressure is excessive to lead to electric wire deformation, and then the shortcomings that influence measuring accuracy, alleviates the workload of experimenter,
Improve test accuracy；
2. cable is straightened by the way that idler wheel is straightened by the present invention, it is straightened without human assistance, alleviates the labour of worker
Intensity；
3. the portion of fixing to clamp of the invention is equipped with groove, it can preferably realize that the fixation of electric wire steps up, and improves examination
Test precision.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 is a kind of wire conductor resistance test special fixture structural schematic diagram that the present embodiment proposes.
Fig. 2 is pressure sensor and movable clamping portion connection schematic diagram in Fig. 1.
Fig. 3 is that idler wheel cross-sectional view is straightened in Fig. 1.
Fig. 4 is guide plate side view in Fig. 1.
Fig. 5 is the module diagram in Fig. 1 in control device.
Fig. 6 is a kind of application method flow chart of wire conductor resistance test special fixture proposed by the present invention.
Description of symbols:
1 testing stand；2 fix to clamp portion；201 grooves；3 movable clamping portions；31 pressure sensors；4 controllers；41 connect
Receive module；42 conversion modules；43 display analysis modules；44 control modules；5 displays；6 first motors；7 first bevel gears；8
Two bevel gears；9 screw rods；10 nuts；11 cross bars；12 guide plates；121 guide grooves；13 connecting rods；14 second motors；15 are straightened rolling
Wheel；151 fixed frames；152 through-holes；153 threaded holes；154 bolts；16 master switch；17 master switch indicator lights；18 first start by
Button；19 first state indicator lights；20 first scram buttons；21 second start buttons；22 second status indicator lamps；23 second emergency stops
Button；24 receive line；25 display lines；26 control lines.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not considered as limiting the invention.
As shown in figures 1 to 6, the present embodiment propose a kind of wire conductor resistance test special fixture, it include testing stand 1,
Pressure sensor 31, control device and fixture, fixture set there are two and are symmetrical set at the both ends of testing stand 1, and fixture includes
Portion 2 and movable clamping portion 3 are fixed to clamp, two fix to clamp portion 2 and are fixedly mounted on testing stand 1, and two movable clamping portions 3 connect
It is connected to the band first driving device that the movable clamping portion 3 can be made mobile, further, first driving device includes first motor
6, first bevel gear 7 is installed on the output shaft of first motor 6, intermeshing there are also second bevel gears with first bevel gear 7
8, second bevel gear 8 is fixedly mounted on the bottom of screw rod 9, and nut 10, fixed weldering on nut 10 are also fitted on screw rod 9
It is connected to a cross bar 11, is vertically connected with connecting rod 13 in cross bar 11, the quantity of connecting rod 13 is 2, in two connecting rods 13
The other end is separately connected two movable clamping portions 3.Pressure sensor 31, pressure sensor are installed in two movable clamping portions 3
31 stop for detecting the pressure change that electric wire is subject to trigger first motor 6, the corresponding control of 31 outer end of pressure sensor connection
Device processed.
In order to realize the linear movement for being changed into cross bar 11 of screw rod 9, guide plate 12 is also added, further
, a guide groove 121 is equipped with inside guide plate 12, cross bar 11 passes through above-mentioned guide groove 121, and the outer wall and guiding of cross bar 11
The inner wall of slot 121 fits.
The control device includes controller 4 and display 5, and receiving module 41, the conversion of acquisition pressure are equipped in controller 4
Module 42, display analysis module 43, control module 44, receiving module 42 are connected by receiving line 24 with pressure sensor 31, are controlled
Molding block 44 is connect by control line 26 with 6 phase control of first motor, and display analysis module passes through display line 25 and the display
Device 5 is connected.
Further, receiving module 41 is used to receive the pressure value that pressure sensor 31 measures, and conversion module 42 is used to
The pressure value measured is converted to the pressure versus time linear graph and number of electric wire, display 43 one side of analysis module pressure-when
Between linear graph and number be shown on display 5, have intuitive impression convenient for laboratory technician, be on the other hand used to analyze above-mentioned figure
Shape and number, before electric wire does not deform, pressure changes linearly at any time, and when electric outlet deformation, pressure and time are not
It changing linearly, display analysis module 43 understands the slope of continuous detection curve always, when slope changes, display analysis mould
Block 43, which can issue, shuts down first motor instruction, and feeds back and arrive control module 44, and control module 44 controls the power supply of first motor, by force
Row power-off, movable clamping portion 3 completes the fixation work of electric wire not in movement at this time.
In order to realize the lifting in movable clamping portion 3, further, first motor 6 has the function of forward and reverse.
It is advantageous in order to preferably realize that the fixation of electric wire steps up, groove 201 is additionally provided in the portion that fixes to clamp 2.
It in order to mitigate the working strength of testing crew, is respectively equipped at testing stand both ends and idler wheel 15 is straightened, idler wheel 15 is straightened
Quantity there are two and be symmetrical set, idler wheel 15 is straightened and is movably arranged on fixed frame 151,1 phase of fixed frame 151 and testing stand
It being fixedly connected, one of them is straightened idler wheel 15 and is connected with the second driving device, and the second driving device can be the second motor 14, the
The drive shaft of two motors 14 is connected with idler wheel 15 is straightened.
It is straightened above idler wheel 15 to preferably be fixed on electric wire, through-hole 152 and screw thread is equipped on idler wheel 15 is straightened
Hole 153, through-hole 152 are mutually passed through with threaded hole 153, and further, cooperation is equipped with bolt 154 in threaded hole 153.
Each electrical equipment of control for greater safety, is additionally provided with master switch 16 on testing stand 1, and master switch 16 controls whole
A equipment is powered and power-off, is also equipped with master switch indicator light 17 in the side of master switch 16, when energized, master switch indicator light
17 can light, and can be very good to guarantee Electrical Safety, be additionally provided with the first start button 18, the in the side of master switch indicator light 17
One status indicator lamp 19, the first scram button 20, the first start button 18 are used to start first motor 6, first state indicator light
19 are used to show whether first motor 6 works, and when first motor 6 works, first state indicator light 19 can be lighted, the first emergency stop
Button 20 is used to shut down first motor 6, plays external control action.
It is additionally provided with the second start button 21, the second status indicator lamp 22, the second scram button 23 on testing stand 1, second
Start button 21 is used to start the second motor 14, and whether the second status indicator lamp 22 is used to show the second motor 14 in work shape
State, the second scram button 23 are used to shut down the second motor 14.
Specifically used method is as follows:
When in use, it opens master switch 16 and carries out power transmission, master switch status indicator lamp 17 can light at this time, then by electric wire
It is placed in the groove 201 in the portion of fixing to clamp 2, the both ends of electric wire is respectively protruding into the through-hole 152 that idler wheel 15 is straightened, by spiral shell
Bolt 154 screws in threaded hole 153, until electric wire both ends are fixed by bolt 154, presses the first start button 18, this
When the second motor 14 start to work, first state indicator light 19 lights, and the drive of the second motor 14 is straightened idler wheel 15 and is rotated, this
When electric wire be slowly straightened, keep straight along fixture contact surface to electric wire sample, when no bending, press the second scram button 23,
Shut down the second motor 14.
The first start button 18 is pressed, first state indicator light 19 lights at this time, and first motor 6 starts to rotate, the first electricity
Machine 6 drives first bevel gear 7 to rotate, and first bevel gear 7 drives second bevel gear 8 to rotate, and then screw rod 11 is driven to be rotated,
Screw rod 11 drives nut 10 to rotate, and due to the presence of guide plate 12, nut 10 drives cross bar 11 to move down, and cross bar 11 passes through company
Extension bar 13 drives movable clamping portion 3 to move down, and movable clamping portion 3 is slowly close to the portion that fixes to clamp 2, because of movable clamping portion
3 are equipped with pressure sensor 31, and receiving module 41 will measure pressure value by reception line 24 and pass through conversion module 42 for pressure value
It is converted into the pressure versus time linear graph of electric wire, Line Chart and number are shown to aobvious by display analysis module 43 by display line 25
Show on device 5, before electric wire does not deform, pressure changes linearly at any time, and when electric outlet deformation, pressure is not in the time
Linear change, display analysis module 43 understands the slope of continuous detection curve always, when slope changes, shows analysis module
43 can issue the instruction for shutting down first motor 6, and feed back and arrive control module 44, and control module 44 passes through the control of control line 26 first
The power supply of motor, forced interruption shut down first motor 6, and electric wire is completed electric wire fixation and work is straightened by intact fixation at this time
Make.
At this point, starting to survey wire resistance, after the completion of to be tested, first motor 6 is inverted, movable clamping portion 3 moves up, will
Spiral 154 is screwed out out of threaded hole 153, and electric wire sample is extracted out out of through-hole 152, is completed wire resistance at this time and was entirely tested
Journey.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: not
A variety of change, modification, replacement and modification can be carried out to these embodiments in the case where being detached from the principle of the present invention and objective, this
The range of invention is defined by the claims and their equivalents.
Claims (9)
1. a kind of wire conductor resistance test special fixture, including testing stand, pressure sensor, control device and fixture, special
Sign is that the fixture sets there are two and is symmetrical set at the both ends of the testing stand, and the fixture includes fixing to clamp portion
With movable clamping portion, described two portions of fixing to clamp are fixedly mounted on the testing stand, described two movable clamping portion connections
There is the first driving device with first motor for keeping the movable clamping portion mobile, pressure is installed in described two movable clamping portions
Sensor, the pressure sensor is used to detect the pressure change that electric wire is subject to be stopped triggering the first motor, the pressure
Force snesor is connected with the control device.
2. a kind of wire conductor resistance test special fixture according to claim 1, which is characterized in that first driving
Device further include:
First bevel gear, the first bevel gear are connected with the output shaft of the first motor；
Second bevel gear, the second bevel gear are meshed with the first bevel gear；
Screw rod, the bottom end of the screw rod are set with the second bevel gear, are also fitted with nut on the screw rod；
Cross bar, described cross bar one end are connected with the nut；
Connecting rod, there are two the connecting rod is set, on the cross bar, the other end connects institute for described two connecting rod one end connections
State movable clamping portion；
Guide plate, the guide plate is interior to be equipped with guide groove, and the guide plate lower end is mutually fixedly connected with the testing stand, described to lead
The cross bar is passed through into slot, the guide groove inner wall is fitted closely with the cross bar.
3. a kind of wire conductor resistance test special fixture according to claim 1, which is characterized in that the control device
Including controller and display, be equipped in the controller receiving module of acquisition pressure, conversion module, display analysis module,
Control module, the receiving module are connected with the pressure sensor, and the control module passes through control line and first electricity
The connection of machine phase control, the display analysis module are connected by display line with the display.
4. a kind of wire conductor resistance test special fixture according to claim 3, which is characterized in that the receiving module
For receiving the pressure value that pressure sensor measures, the conversion module is used to the pressure value being converted to figure and number,
The display analysis module is used to analyze the figure and number, and analysis result is then passed to the control in a manner of instructing
Molding block, the control module control the stopping of the first motor by described instruction, and the display analysis module will be described
Figure and number are shown on the display.
5. a kind of wire conductor resistance test special fixture according to claim 1, which is characterized in that the first motor
Have the function of forward and reverse.
6. a kind of wire conductor resistance test special fixture according to claim 1, which is characterized in that described to fix to clamp
Groove is additionally provided in portion.
7. a kind of wire conductor resistance test special fixture according to claim 1, which is characterized in that the testing stand two
End is respectively equipped with idler wheel is straightened, and the idler wheel that is straightened is symmetrical set, it is described one of them idler wheel be straightened be connected with the second driving
Device.
8. a kind of wire conductor resistance test special fixture according to claim 7, which is characterized in that described that idler wheel is straightened
It is equipped with through-hole and threaded hole, the through-hole is mutually passed through with the threaded hole, and cooperation is equipped with bolt in the threaded hole.
9. a kind of application method of wire conductor resistance test special fixture according to claim 1-8, special
Sign is, comprising the following steps:
(1) in use, electric wire is placed in the groove fixed to clamp in portion；
(2) both ends of electric wire are respectively protruding into the through-hole that idler wheel is straightened；
(3) bolt is screwed in threaded hole, until electric wire both ends are secured in a press；
(4) the second driving device of idler wheel is straightened in starting, and electric wire is slowly straightened, and electric wire sample is made to keep flat along fixture contact surface
Directly, no bending is then turned off the second driving device；
(5) start first motor, drive movable clamping portion to move down by first driving device, movable clamping portion band dynamic pressure
Sensor slowly acts on electric wire, and pressure value is turned the value for measuring pressure by conversion module by receiving line by receiving module
The pressure versus time linear graph of electric wire is turned to, before electric wire does not deform, pressure changes linearly at any time, when electric outlet becomes
When shape, pressure is not changed linearly with the time, display analysis module can in δ t time interval continuous detection curve always it is oblique
Rate, when slope changes, display analysis module, which can issue, shuts down first motor instruction, and feeds back and arrive control module, control
Module passes through the power supply of control line traffic control first motor, and forced interruption shuts down first motor, and pressure sensor stops work at this time
Make, electric wire is completed electric wire fixation and work is straightened by intact fixation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910085157.1A CN109702668B (en) | 2019-01-29 | 2019-01-29 | Special clamp for testing electric wire conductor resistance and application method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910085157.1A CN109702668B (en) | 2019-01-29 | 2019-01-29 | Special clamp for testing electric wire conductor resistance and application method thereof |
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| Publication Number | Publication Date |
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| CN109702668A true CN109702668A (en) | 2019-05-03 |
| CN109702668B CN109702668B (en) | 2023-08-15 |
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| CN201910085157.1A Active CN109702668B (en) | 2019-01-29 | 2019-01-29 | Special clamp for testing electric wire conductor resistance and application method thereof |
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| CN111426576A (en) * | 2020-03-09 | 2020-07-17 | 神宇通信科技股份公司 | Electronic wire |
| CN114714271A (en) * | 2022-04-02 | 2022-07-08 | 建业电缆集团有限公司 | Hydraulic measurement clamp for measuring cable conductor resistance |
| CN117074785A (en) * | 2023-10-12 | 2023-11-17 | 福建省志骐电子科技有限公司 | High-precision resistance value detection equipment |
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| CN111426576A (en) * | 2020-03-09 | 2020-07-17 | 神宇通信科技股份公司 | Electronic wire |
| CN111426576B (en) * | 2020-03-09 | 2023-01-13 | 神宇通信科技股份公司 | Bending test method of electronic wire |
| CN114714271A (en) * | 2022-04-02 | 2022-07-08 | 建业电缆集团有限公司 | Hydraulic measurement clamp for measuring cable conductor resistance |
| CN114714271B (en) * | 2022-04-02 | 2024-06-11 | 建业电缆集团有限公司 | Hydraulic measuring clamp for measuring cable conductor resistance |
| CN117074785A (en) * | 2023-10-12 | 2023-11-17 | 福建省志骐电子科技有限公司 | High-precision resistance value detection equipment |
| CN117074785B (en) * | 2023-10-12 | 2023-12-22 | 福建省志骐电子科技有限公司 | High-precision resistance value detection equipment |
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| CN109702668B (en) | 2023-08-15 |
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Effective date of registration: 20240218 Address after: 250101 Room 303, Block B, No. 2117, Keyuan Road, High tech Zone, Jinan, Shandong Patentee after: Shandong Jianyan Testing Technology Co.,Ltd. Country or region after: China Patentee after: Shandong Academy of Building Science Co.,Ltd. Address before: 250031 Shandong Province Flyover District of Ji'nan City Road 29. Patentee before: SHANDONG PROVINCIAL ACADEMY OF BUILDING RESEARCH Country or region before: China |