CN110806350A - Tensile testing device of copper pipe - Google Patents
Tensile testing device of copper pipe Download PDFInfo
- Publication number
- CN110806350A CN110806350A CN201911212894.XA CN201911212894A CN110806350A CN 110806350 A CN110806350 A CN 110806350A CN 201911212894 A CN201911212894 A CN 201911212894A CN 110806350 A CN110806350 A CN 110806350A
- Authority
- CN
- China
- Prior art keywords
- copper pipe
- block
- screw rod
- workbench
- inspection device
- 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.)
- Withdrawn
Links
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 67
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 67
- 239000010949 copper Substances 0.000 title claims abstract description 67
- 238000009864 tensile test Methods 0.000 title description 9
- 238000007689 inspection Methods 0.000 claims abstract description 18
- 238000003466 welding Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
- G01N3/068—Special adaptations of indicating or recording means with optical indicating or recording means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/0641—Indicating or recording means; Sensing means using optical, X-ray, ultraviolet, infrared or similar detectors
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses an anti-stretching inspection device for a copper pipe, which comprises a workbench, wherein mounting plates are welded at the middle parts of two ends of the workbench, fixed blocks are welded at the middle part of one end of each mounting plate at equal intervals, a connecting block is arranged at the edge position of one end of each fixed block, a first screw rod is connected inside the connecting block through threads, a buffer block is connected at the middle part of one end of the first screw rod, and a clamping block is connected at the middle part of one section of the buffer block. The stability of device centre gripping copper pipe has been convenient for improve.
Description
Technical Field
The invention relates to the technical field of machining, in particular to an anti-stretching inspection device for a copper pipe.
Background
The copper pipe is also called as red copper pipe, one of nonferrous metal pipes, is a pressed and drawn seamless pipe, the copper pipe has the characteristics of good electrical conductivity and thermal conductivity, the main materials of conductive fittings and heat dissipation fittings of electronic products, and is also commonly used for tap water pipelines, heat supply pipelines and refrigeration pipelines, the copper pipe has the advantages of hard texture, difficult corrosion, high temperature resistance, high pressure resistance and the like as an installation pipe, can be used in different environments, and integrates the advantages of metal and nonmetal pipes into a whole, the water boiling head is the best connecting pipeline in a cold and hot water system, the copper pipe is fireproof and heat-resistant, can still maintain the shape and the strength at high temperature, has no aging phenomenon, the copper pipe has strong corrosion resistance, is not easy to oxidize, and is not easy to chemically react with some liquid substances.
In the Chinese patent with the application number of 201520816111.X, a copper pipe product tensile testing device is provided, through the matching of a clamping block and an extrusion part on a base, the clamping block is an inclined plane with a small angle, so that the resistance between the clamping block and the extrusion part is small, the copper pipe can be conveniently clamped, the copper pipe is not easy to slip off in the clamping process, the clamping effect is good, the copper pipe is pulled, the detection procedure is simple and convenient, and the test is accurate;
at present, copper pipe product tensile verifying attachment receives the influence of copper pipe diameter size easily, and copper pipe verifying attachment can not carry out accurate inspection to the copper pipe that the diameter is not of uniform size, and then can't be suitable for the tensile inspection of different diameter copper pipe products, if use the centre gripping copper pipe again can not be fixed to the different bores of copper pipe by force, the practicality is lower for the copper pipe product of different diameters need carry out copper pipe tensile inspection with the help of professional equipment.
Disclosure of Invention
The invention provides a copper pipe tensile testing device, which can effectively solve the problems that the existing copper pipe product tensile testing device proposed in the background technology is easily influenced by the diameter of a copper pipe, the copper pipe testing device cannot accurately test the copper pipes with different diameters, and further cannot be suitable for tensile testing of copper pipe products with different diameters, if the copper pipe is forcibly used for different calibers of the copper pipe, the copper pipe cannot be fixedly clamped, the practicability is low, and the copper pipe products with different diameters need to be subjected to copper pipe tensile testing by means of special equipment.
In order to achieve the purpose, the invention provides the following technical scheme: an anti-stretching inspection device for a copper pipe comprises a workbench, wherein mounting plates are welded in the middle parts of two ends of the workbench respectively, fixed blocks are welded in the middle parts of one ends of the mounting plates at equal intervals, a connecting block is arranged at the edge position of one end of each two fixed blocks, a first screw rod is connected in the connecting block through threads, a buffer block is connected in the middle part of one end of the first screw rod, and a clamping block is connected in the middle part of one section of the buffer block;
the middle part of the top end of the workbench is provided with a sliding chute, the inside of the sliding chute is connected with a sliding block in a sliding manner, the top end of the sliding block is welded with a connecting plate, the top end inside the connecting plate is provided with a lower clamping block, the middle part of the top end of the connecting plate is connected with a second screw rod through threads, and the middle part of the bottom end of the second screw rod is connected with an upper clamping;
the inside through connection of spout has the lead screw, the drive belt has been cup jointed to lead screw one end surface, workstation bottom edge position department welding has the L template, L template top middle part welding has the base, the inside fixedly connected with motor of base, motor output shaft one end surface cup joints in the drive belt, the input of motor and the output electric connection of external power.
Preferably, a guide rod is arranged in the middle of one end of the mounting plate, an infrared sensor is arranged in the middle of one end of the guide rod, a tension sensor is arranged in the middle of one end of the guide rod, and a signal reflector is arranged at a position corresponding to one side of the infrared sensor.
Preferably, the edge positions of the two ends of the workbench are provided with scale strips, and the scales on the outer surface of the scale strips are consistent.
Preferably, the bottom of each of the two ends of the connecting plate is provided with an indicating plate, and the outer surface of each indicating plate is bonded with an indicating mark.
Preferably, the outer surface of one end of the screw rod is sleeved with an anti-slip sleeve, and anti-slip teeth are arranged in the anti-slip sleeve.
Preferably, the four corners of the workbench are provided with stand columns, and the bottom ends of the stand columns are provided with rubber gaskets.
Compared with the prior art, the invention has the beneficial effects that:
1. the utility model discloses a fixed block, the connecting block, first screw rod, the buffer block, the grip block, lower clamp splice, second screw rod and last clamp splice, can fix the centre gripping to the both ends of copper pipe, and through the grip block, go up the combined use of clamp splice and lower clamp splice, be convenient for carry out the tensile inspection to the copper pipe, and then realize that the copper pipe is more even at the centre gripping atress, can also be according to the dynamics of the copper pipe adjustment centre gripping of the diameter of difference, be convenient for improve the steadiness of device centre gripping copper pipe, the practicality of device has been increased, the problem that the copper pipe product of having avoided different diameters need carry out the inspection with the help of dedicated equipment.
2. This practicality can realize the tensile inspection that goes on the copper pipe through spout, slider, lead screw, drive belt, motor to it is rotatory to drive the lead screw through motor and drive belt, and error when having avoided manual operation can also promote the effective distance of tensile copper pipe effectively, makes the more accuracy of inspection copper pipe tensile test, still is favorable to having improved the effect of copper pipe inspection.
3. This practicality is through infrared sensor, pulling force inductor, signal returner, scale bar, indicator board, can go on through the tensile in-process of copper pipe, observes tensile distance through scale bar and indicator board directly perceivedly, and rethread pulling force inductor, infrared sensor and signal returner can take notes the tensile data that gathers, can also take notes the tensile inspection of test copper pipe many times, and many times data record reduces the error that data produced.
Description of the drawings:
the accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
In the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the mounting structure of the upper clamping block of the present invention;
FIG. 3 is a schematic illustration of the mounting structure of the belt of the present invention;
reference numbers in the figures: 1. a work table; 2. mounting a plate; 3. a fixed block; 4. connecting blocks; 5. a first screw; 6. a buffer block; 7. a clamping block; 8. a chute; 9. a slider; 10. a connecting plate; 11. a lower clamping block; 12. a second screw; 13. an upper clamping block; 14. a screw rod; 15. a transmission belt; 16. An L-shaped plate; 17. a base; 18. a motor; 19. a guide bar; 20. an infrared sensor; 21. A tension sensor; 22. a signal returner; 23. a scale bar; 24. an indicator panel.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Example (b): as shown in fig. 1-3, the invention provides a technical scheme, and the tensile testing device for the copper pipe comprises a workbench 1, wherein mounting plates 2 are welded in the middle parts of two ends of the workbench 1, fixed blocks 3 are welded in the middle parts of one ends of the mounting plates 2 at equal intervals, a connecting block 4 is arranged at the edge position of one end of each two fixed blocks 3, a first screw 5 is connected in the connecting block 4 through threads, a buffer block 6 is connected in the middle part of one end of the first screw 5, and a clamping block 7 is connected in the middle part of one section of the buffer block 6;
a sliding chute 8 is formed in the middle of the top end of the workbench 1, a sliding block 9 is connected to the inside of the sliding chute 8 in a sliding mode, a connecting plate 10 is welded to the top end of the sliding block 9, a lower clamping block 11 is installed at the top end of the inside of the connecting plate 10, a second screw 12 is connected to the middle of the top end of the connecting plate 10 through threads, and an upper clamping block 13 is connected to the middle of the bottom end;
a screw rod 14 penetrates through the inside of the sliding chute 8, a transmission belt 15 is sleeved on the outer surface of one end of the screw rod 14, an L-shaped plate 16 is welded at the edge position of the bottom end of the workbench 1, a base 17 is welded in the middle of the top end of the L-shaped plate 16, a motor 18 is fixedly connected inside the base 17, the outer surface of one end of an output shaft of the motor 18 is sleeved on the transmission belt 15, the input end of the motor 18 is electrically connected with the output end of an external power supply, and the model of the motor 18 is 86;
a guide rod 19 is arranged in the middle of one end of the mounting plate 2, an infrared sensor 20 is arranged in the middle of one end of the guide rod 19, a tension sensor 21 is arranged in the middle of one end of the guide rod 19, a signal return device 22 is arranged at a position corresponding to one side of the infrared sensor 20, and the infrared sensor 20 and the tension sensor 21 are both connected with a recorder;
1 both ends border position department of workstation all is provided with scale bar 23, scale bar 23 surface scale is all unanimous, indicator plate 24 is all installed to connecting plate 10 both ends bottom, indicator plate 24 surface bonds there is the pilot mark, be convenient for direct observation copper pipe's tensile data, can also be according to the rotation of the data direct adjustment lead screw 14 of observing, 14 one end surfaces of lead screw have cup jointed anti-skidding sleeve, the inside antiskid tooth that is provided with of antiskid sleeve, it drops to be difficult for unexpected when 14 surfaces of lead screw rotate to be convenient for drive belt 15, the stand is all installed in 1 four corners border position department of workstation, rubber pads is installed to the stand bottom, it is firm to be convenient for workstation 1 to promote, influence to the device when reducing motor 18 vibrations.
The working principle and the using process of the invention are as follows: in the actual use process, the two ends of the copper pipe are fixedly clamped, the copper pipe can be fixedly clamped by matching the clamping block 7, the upper clamping block 13 and the lower clamping block 11, the outer surfaces of the two ends of the copper pipe can be fixedly clamped, the tightness of clamping the copper pipe can be conveniently adjusted by rotating the first screw rod 5 and the second screw rod 12, the adjustment can be conveniently carried out according to the different diameters of the copper pipe, and the device can be suitable for copper pipes with different diameters;
the worker connects the motor 18 with an external power supply, the transmission belt 15 is driven by an output shaft of the motor 18, the transmission belt 15 drives the screw rod 14 to rotate clockwise, so that the slide block 9 is driven by the screw rod 14 through threads, the slide block 9 can horizontally slide along the sliding groove 8, the horizontal movement of the slide block 9 can drive one end of the fixedly clamped copper pipe to be stretched, and the stretching of the copper pipe is completed;
the staff can be through observing scale bar 23 and indicator panel 24 at the tensile in-process of copper pipe, be convenient for carry out data record to the drawing of copper pipe, can also be through pulling force inductor 21, infrared sensor 20 and signal returner 22 are with analog signal transmission to external controller, the controller carries out the conversion of analog and digital, thereby carry out the data monitoring that tensile detected, guarantee the quality of steel pipe, can also take notes the tensile inspection of test copper pipe many times, many times data record reduces the error that data produced.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a tensile verifying attachment of copper pipe, includes workstation (1), its characterized in that: the mounting plates (2) are welded in the middle parts of two ends of the workbench (1), the fixing blocks (3) are welded in the middle parts of one ends of the mounting plates (2) at equal intervals, a connecting block (4) is arranged at the edge position of one end of each two fixing blocks (3), a first screw rod (5) is connected to the inside of each connecting block (4) through threads, a buffer block (6) is connected to the middle part of one end of each first screw rod (5), and a clamping block (7) is connected to the middle part of one section of each buffer block (6);
a sliding chute (8) is formed in the middle of the top end of the workbench (1), a sliding block (9) is connected to the inside of the sliding chute (8) in a sliding mode, a connecting plate (10) is welded to the top end of the sliding block (9), a lower clamping block (11) is installed at the top end of the inside of the connecting plate (10), a second screw rod (12) is connected to the middle of the top end of the connecting plate (10) through threads, and an upper clamping block (13) is connected to the middle of the bottom end of the second screw;
spout (8) inside through connection has lead screw (14), drive belt (15) have been cup jointed to lead screw (14) one end surface, workstation (1) bottom edge position department welding has L template (16), L template (16) top middle part welding has base (17), the inside fixedly connected with motor (18) of base (17), motor (18) output shaft one end surface cup joints in drive belt (15), the input of motor (18) and the output electric connection of external power source.
2. An anti-stretching inspection device for copper tubes as claimed in claim 1, wherein: mounting panel (2) one end middle part is provided with guide bar (19), guide bar (19) one end mid-mounting has infrared sensor (20), guide bar (19) one end mid-mounting has pulling force inductor (21), infrared sensor (20) one side corresponds position department and installs signal reflector (22).
3. An anti-stretching inspection device for copper tubes as claimed in claim 1, wherein: the edge positions of two ends of the workbench (1) are respectively provided with a scale strip (23), and the scales on the outer surface of the scale strips (23) are all consistent.
4. An anti-stretching inspection device for copper tubes as claimed in claim 1, wherein: indicator boards (24) are installed at the bottoms of the two ends of the connecting board (10), and indicator marks are bonded on the outer surfaces of the indicator boards (24).
5. An anti-stretching inspection device for copper tubes as claimed in claim 1, wherein: and an anti-slip sleeve is sleeved on the outer surface of one end of the screw rod (14), and anti-slip teeth are arranged in the anti-slip sleeve.
6. An anti-stretching inspection device for copper tubes as claimed in claim 1, wherein: the four corners of the workbench (1) are provided with stand columns, and rubber gaskets are arranged at the bottom ends of the stand columns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911212894.XA CN110806350A (en) | 2019-12-02 | 2019-12-02 | Tensile testing device of copper pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911212894.XA CN110806350A (en) | 2019-12-02 | 2019-12-02 | Tensile testing device of copper pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110806350A true CN110806350A (en) | 2020-02-18 |
Family
ID=69492160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911212894.XA Withdrawn CN110806350A (en) | 2019-12-02 | 2019-12-02 | Tensile testing device of copper pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110806350A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114459905A (en) * | 2022-04-12 | 2022-05-10 | 深圳市帝腾锡业有限公司 | Detection device for anti-tensile strength of soldering tin bar |
| CN117213971A (en) * | 2023-09-04 | 2023-12-12 | 南通景康橡塑有限公司 | Measuring system for rubber and plastic products |
-
2019
- 2019-12-02 CN CN201911212894.XA patent/CN110806350A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114459905A (en) * | 2022-04-12 | 2022-05-10 | 深圳市帝腾锡业有限公司 | Detection device for anti-tensile strength of soldering tin bar |
| CN114459905B (en) * | 2022-04-12 | 2022-06-21 | 深圳市帝腾锡业有限公司 | Detection device for tensile strength of soldering tin bar |
| CN117213971A (en) * | 2023-09-04 | 2023-12-12 | 南通景康橡塑有限公司 | Measuring system for rubber and plastic products |
| CN117213971B (en) * | 2023-09-04 | 2024-05-10 | 南通景康橡塑有限公司 | Measuring system for rubber and plastic products |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110806350A (en) | Tensile testing device of copper pipe | |
| US3354705A (en) | Torque-tension testing apparatus and method for nut-bolt assemblies | |
| CN107941163A (en) | A kind of fully distributed fiber coefficient of strain caliberating device and method | |
| CN208688367U (en) | A kind of instruments used for education measuring circularity, concentricity and end face run-out | |
| CN211528058U (en) | Tensile testing device of copper pipe | |
| WO2020224001A1 (en) | Visual flexible-material bending performance measuring device | |
| CN213632955U (en) | Mechanical structure of copper pipe tensile strength test equipment | |
| CN210894150U (en) | Detection device for detecting construction quality inside pipeline | |
| CN116754392A (en) | Steel bar height Wen Lali relaxation testing machine | |
| CN210347323U (en) | Rubber pipeline tensile strength detection device | |
| CN212620413U (en) | Digital display caliper calibrating device | |
| CN210071499U (en) | Tensile sample elongation after breaking measuring device | |
| CN208805311U (en) | A kind of lifting column feed screw nut dynamic torque detecting tool | |
| CN219777359U (en) | Workpiece welding strength testing machine | |
| TWI665433B (en) | Water pipe clamp performance test system and test method | |
| CN214427143U (en) | Electronic tension tester | |
| CN221649510U (en) | Worm tooth surface roughness inspection tool | |
| CN113851864B (en) | Direct-current resistance measuring device for flexible connection of tubular bus and down-lead node of anchor ear | |
| CN214408379U (en) | Tensile testing machine convenient to it is fixed | |
| CN218067447U (en) | Tension detection device for iron sheet production | |
| CN211085072U (en) | Electronic gauge angle gauge | |
| CN216205785U (en) | Elbow detection device | |
| CN214249171U (en) | Pressure detection device for natural gas pipeline | |
| CN220772994U (en) | Testing device for solar photovoltaic panel | |
| CN216647616U (en) | Experimental facilities is used in teaching |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200218 |