CN113740681A - Power supply insulation safety tool testing device - Google Patents
Power supply insulation safety tool testing device Download PDFInfo
- Publication number
- CN113740681A CN113740681A CN202111011199.4A CN202111011199A CN113740681A CN 113740681 A CN113740681 A CN 113740681A CN 202111011199 A CN202111011199 A CN 202111011199A CN 113740681 A CN113740681 A CN 113740681A
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- columns
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- 238000009413 insulation Methods 0.000 title claims abstract description 32
- 238000012360 testing method Methods 0.000 title claims abstract description 20
- 238000005096 rolling process Methods 0.000 claims description 8
- 239000004020 conductor Substances 0.000 claims 1
- 239000012212 insulator Substances 0.000 claims 1
- 238000001514 detection method Methods 0.000 description 12
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000007689 inspection Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241000282414 Homo sapiens Species 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0425—Test clips, e.g. for IC's
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The invention discloses a power supply insulation safety tool testing device which comprises a base, wherein two symmetrically arranged supporting columns are fixedly connected to the upper end surface of the base, the two supporting columns are arranged away from each other, threaded holes are formed in the ends, far away from the base, of the two supporting columns, the two threaded holes are symmetrically arranged, threaded columns are in threaded connection with the two threaded holes, rotating holes are formed in the two threaded columns, rotating columns are rotatably connected into the two rotating holes, fixing holes are formed in the rotating columns, conducting rods are fixedly connected to the inner walls of the ends, close to each other, of the two fixing holes, conducting wires are arranged at the ends, far away from each other, of the two conducting rods, and power supply equipment and an indicator lamp are further arranged on the upper end surface of the base. The invention can safely and stably complete the insulation test work of tools with different shapes, and greatly meets different use requirements of users.
Description
Technical Field
The invention relates to the technical field of electric power tools, in particular to a power supply insulation safety tool testing device.
Background
In modern society, electric power is an important energy source, and in order to enable the energy source to serve human beings better, a plurality of electric-related tools are invented for use, and in order to ensure the safety of reusing the tools, the tools are required to be insulated frequently, and in order to ensure the good insulation state of the tools, the tools can be used safely, and corresponding insulation test devices are used for carrying out insulation tests on the tools.
When the existing insulation test is carried out, the tool to be inspected is fixed by using an insulated clamp simply, then the tool to be inspected is subjected to electrifying treatment by using an electrified lead, whether a circuit is communicated or not is observed, the inspection state is very unstable, the simple clamp is fixed, the inspection work of a user on the insulation states of different parts of tools in different shapes cannot be met, and the use by the user is greatly not facilitated.
Disclosure of Invention
The invention aims to solve the defects in the prior art, such as: the existing device has the problems of poor safety, stability and applicability.
In order to achieve the purpose, the invention adopts the following technical scheme:
a power supply insulation safety tool testing device comprises a base, wherein two support columns which are symmetrically arranged are fixedly connected to the upper end surface of the base, the two support columns are mutually far away from each other, threaded holes are formed in the ends, far away from the base, of the two support columns, the two threaded holes are mutually symmetrically arranged, threaded columns are respectively in threaded connection with the two threaded holes, rotating holes are formed in the two threaded columns, rotating columns are respectively in rotating connection with the two rotating holes, fixing holes are formed in the rotating columns, conducting rods are fixedly connected to the inner walls of the ends, close to each other, of the two fixing holes, conducting wires are arranged at the ends, far away from each other, of the two conducting rods, power supply equipment and an indicator lamp are further arranged on the upper end surface of the base, and the ends, far away from the two conducting rods, of the conducting wires are respectively arranged on the power supply equipment and the indicator lamp, the base is provided with a fixing device.
Preferably, the fixing device comprises a sliding groove arranged on the upper end surface of the base, a sliding seat is connected in the sliding groove in a sliding way, the upper end surface of the sliding seat is fixedly connected with a lifting seat, a threaded groove is arranged on one side wall of the lifting seat far away from the base, a thread seat is connected with the thread groove in an internal thread way, a rotating disc is fixedly connected on one side wall of the thread seat far away from the base, the base is kept away from to the rolling disc on a lateral wall, and it is connected with the supporting disk to rotate, two bracing pieces of fixedly connected with are kept away from each other on the lateral wall of base, two to the supporting disk the bracing piece is and sets up, two all be equipped with the screw thread aperture on the bracing piece, two the screw thread aperture is mutual symmetry setting, two equal threaded connection has the threaded rod in the screw thread aperture, two the equal fixedly connected with insulating head of one end that the threaded rod is close to each other.
Preferably, the lower terminal surface of base is gone up to rotate and is connected with four wheel casings that are mutual symmetry and set up, four equal fixedly connected with axis of rotation on the inner wall of wheel casing, four all rotate in the axis of rotation and be connected with the wheel that rolls.
Preferably, two all be equipped with spacing hole on the support column, two equal sliding connection has a gag lever post, two in the spacing hole the gag lever post all is the setting of L type, two the equal fixed connection of gag lever post sets up on rotating the post.
Preferably, two all be equipped with on the inner wall in rotation hole and rotate the groove, two it is connected with the annular disc all to rotate in the groove, two the annular disc is fixed connection respectively and sets up on two rotation posts.
Preferably, the outer wall of one end of each of the two threaded columns, which is far away from each other, is fixedly connected with a handle.
Preferably, an operating rod is fixedly connected to the lower end face of the rotating disc and is arranged in an L shape.
Preferably, the sliding groove is T-shaped, and the shape of the sliding seat is matched with that of the sliding groove.
The invention has the beneficial effects that: this device can utilize the threaded rod to accomplish the centre gripping fixed work of different size multiplexer utensil in the smooth rotation of screw thread downthehole, very big assurance detect the stability of work, and can cooperate the detection achievement at clamping position completion different positions, and the rotation of screw thread seat in the thread groove, rotation and the slip of sliding seat in the sliding tray between rolling disc and the supporting disk, make the insulating detection work of accomplishing the different positions of multiplexer utensil that the user can be convenient more, the work demand that the user detected to the different positions of all kinds of different shape size multiplexer utensils has been satisfied, very big convenience the user uses.
Drawings
FIG. 1 is a front sectional view of a testing device for a power supply insulation safety tool provided by the invention;
FIG. 2 is an enlarged view of the structure A of FIG. 1;
FIG. 3 is an enlarged view of the structure B of FIG. 1;
fig. 4 is a side sectional view of a threaded rod part of the power supply insulation safety tool testing device provided by the invention.
In the figure: the device comprises a base 1, a support column 2, a threaded hole 3, a threaded column 4, a rotating hole 5, a rotating column 6, a fixing hole 7, a conductive rod 8, a conductive wire 9, a power supply device 10, an indicator light 11, a sliding groove 12, a sliding seat 13, a lifting seat 14, a threaded groove 15, a threaded seat 16, a rotating disk 17, a support disk 18, a support rod 19, a threaded hole 20, a threaded rod 21, an insulating head 22, a wheel cover 23, a rotating shaft 24, a rolling wheel 25, a limiting hole 26, a limiting rod 27, a rotating groove 28, an annular disk 29, a handle 30 and an operating rod 31.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-4, a power supply insulation safety tool testing device comprises a base 1, four wheel covers 23 which are symmetrically arranged with each other are rotatably connected to the lower end surface of the base 1, the wheel covers 23 can effectively protect the smooth work of internal rotating shafts 24 and rolling wheels 25, rotating shafts 24 are fixedly connected to the inner walls of the four wheel covers 23, the rolling wheels 25 are rotatably connected to the four rotating shafts 24, the rolling wheels 25 rotate on the rotating shafts 24, so that the whole device can be moved conveniently, the physical strength of a user is greatly saved, two symmetrically arranged support columns 2 are fixedly connected to the upper end surface of the base 1, the two support columns 2 are far away from each other, threaded holes 3 are respectively arranged at the ends of the two support columns 2 far away from the base 1, the two threaded holes 3 are symmetrically arranged with each other, so that the symmetrically arranged conductive rods 8 can smoothly contact a tool to be detected, then, the insulation detection work is smoothly completed, the threaded columns 4 are in threaded connection in the two threaded holes 3, the threaded columns 4 can transversely move due to the particularity of threaded connection when rotating in the threaded holes 3, so that the conductive rods 8 in the threaded holes can be pushed to contact tools with different sizes, then the insulation detection work is completed, the handles 30 are fixedly connected to the outer walls of the ends, far away from each other, of the two threaded columns 4, the threads on the threaded columns 4 are likely to be damaged when the user directly contacts with the threads, the handles 30 effectively protect the user, the user can better and more safely rotate the threaded columns 4;
the two threaded columns 4 are internally provided with rotating holes 5, the two rotating holes 5 are internally and rotatably connected with rotating columns 6, the rotating columns 6 arranged in the way can rotate with the threaded columns 4 mutually, so that the threaded columns are not influenced by the rotation of the threaded columns 4, the fixedly arranged conducting wires 9 can not rotate in the way, further, the safety and the service life of the conducting wires 9 are greatly ensured due to the twisting injury caused by the rotation, the two supporting columns 2 are respectively provided with a limiting hole 26, the two limiting holes 26 are respectively and slidably connected with a limiting rod 27, the two limiting rods 27 are both arranged in an L shape, the two limiting rods 27 are respectively and fixedly connected with the rotating columns 6, the rotating columns 6 can be further prevented from rotating due to the arrangement of the limiting rods 27 and the limiting holes 26, further, the safety of the conducting wires 9 is ensured, the service life of the conducting wires 9 is prolonged, meanwhile, the sliding of the limiting rods 27 in the limiting holes 26 can ensure that the rotating columns 6 can not be interfered in moving, the normal work of the device is greatly ensured, the inner walls of the two rotating holes 5 are respectively provided with the rotating grooves 28, the two rotating grooves 28 are respectively and rotatably connected with the annular discs 29, the two annular discs 29 are respectively and fixedly connected to the two rotating columns 6, the rotating columns 6 can rotate in the rotating holes 5 more stably due to the arrangement of the annular discs 29, and meanwhile, the rotating columns 6 can be driven more stably when the threaded columns 4 move, so that the normal work of the device is further ensured;
the rotary column 6 is internally provided with a fixing hole 7, the inner walls of the ends, close to each other, of the two fixing holes 7 are fixedly connected with conducting rods 8, the ends, far away from each other, of the two conducting rods 8 are provided with conducting wires 9, the upper end surface of the base 1 is also provided with a power supply device 10 and an indicator lamp 11, the ends, far away from the two conducting rods 8, of the two conducting wires 9 are respectively arranged on the power supply device 10 and the indicator lamp 11, the power supply device 10 and the indicator lamp 11 are devices in the prior art, then the conducting wires 9 and the conducting rods 8 can complete partial connection work of a circuit, and further can smoothly complete insulation detection work of the tool, the base 1 is provided with a fixing device, the fixing device comprises a sliding groove 12 arranged on the upper end surface of the base 1, the sliding seat 13 is connected in the sliding groove 12 in a sliding manner, the sliding groove 12 and the sliding seat 13 are matched so that a user can fix the upper part of the tool to be detected at a proper position for transverse movement through the sliding seat 13 in the sliding groove 12, therefore, the designated part of the tool to be detected can be aligned to the two conducting rods 8, and then a user can finish the insulation detection work of the designated part, so that the use requirement of the user is greatly met;
the sliding groove 12 is arranged in a T shape, the shape of the sliding seat 13 is matched with the sliding groove 12, the sliding seat 13 can slide in the sliding groove 12 more stably due to the T-shaped arrangement, the stability of the device is greatly ensured, the lifting seat 14 is fixedly connected to the upper end surface of the sliding seat 13, a threaded groove 15 is formed in one side wall, far away from the base 1, of the lifting seat 14, a threaded seat 16 is connected to the threaded groove 15 in a threaded manner, when the threaded seat 16 rotates in the threaded groove 15, due to the particularity of threaded connection, the threaded seat 16 can perform lifting displacement and can drive a fixed tool to be detected to perform lifting displacement, so that two conducting rods 8 can be aligned to a proper position for lifting the specified part of the tool to be detected, a user can finish the insulation detection work of the specified part, the use requirement of the user is greatly met, the threaded seat 16 is far away from a side wall, fixedly connected with a rotating disc 17 on the base 1, the lower end face of the rotating disc 17 is fixedly connected with the operating rod 31, the operating rod 31 is arranged in an L shape, and due to the fact that the rotating disc 17 is small in size, the operating rod 31 is arranged, so that a user can conveniently rotate the rotating disc 17, the threaded seat 16 can be conveniently and safely rotated by the user, and the use of the user is greatly facilitated;
a supporting disk 18 is rotatably connected on one side wall of the rotating disk 17 far away from the base 1, the rotating connection of the supporting disk 18 enables a user to conveniently rotate the supporting disk 18, and then the angle of the fixed tool to be detected is adjusted, so that the requirements of the user on insulation detection of different parts of the tool can be further met, great convenience is brought to the user, two supporting rods 19 are fixedly connected on one side wall of the supporting disk 18 far away from the base 1, the two supporting rods 19 are arranged in a mutually-far way, threaded small holes 20 are respectively arranged on the two supporting rods 19, the two threaded small holes 20 are symmetrically arranged, threaded rods 21 are respectively in threaded connection in the two threaded small holes 20, the threaded rods 21 are in threaded connection with the threaded small holes 20, the user can enable the two threaded rods 21 to transversely move by rotating the threaded rods 21, then the clamping work is smoothly completed, an insulation head 22 is fixedly connected at one end of the two threaded rods 21 close to each other, the insulation head 22 is not conductive, so that the clamping work can be completed without influencing the insulation detection work.
In the invention, when a user uses the device, firstly, the whole device is pushed, the whole device is easily moved to a designated position for use by means of the rotation of the rolling wheel 25 on the rotating shaft 24, then, a tool to be inspected is placed on the supporting plate 18, then, the two threaded rods 21 are rotated, the two threaded rods 21 push the two insulating heads 22 to mutually approach while rotating in the two threaded small holes 20, then, the tool to be inspected positioned above the supporting plate 18 is clamped, then, the operating rod 31 can be pulled according to the positions of the two conducting rods 8 and the position of the tool to be inspected by the user, the rotating plate 17 is driven to rotate, the rotating plate 17 can drive the threaded seat 16 to rotate in the rotating process, the threaded seat 16 rotates in the threaded groove 15 and generates lifting displacement, and then, the rotating plate 17 and the supporting plate 18 are lifted to a proper height, therefore, the tool to be inspected fixed on the supporting disc 18 can be lifted to a proper height, then the rotating disc 17 can be rotated, so that the tool to be inspected can also be rotated to a proper angle, the tool to be inspected can be pushed, the sliding seat 13 can slide to a proper position in the sliding groove 12, and the tool to be inspected can be moved to a proper position, and then the part of the tool to be inspected, which needs to be subjected to absolute detection, can be aligned to the conducting rods 8 on the two sides;
then, the two threaded columns 4 can be rotated, the two threaded columns 4 can transversely move while rotating in the two threaded holes 3, and then the rotating column 6 is driven to transversely move, because the rotating column 6 is rotatably connected in the rotating hole 5, therefore, the rotation of the threaded column 4 does not affect the rotating column 6, the rotating column 6 drives the conducting rod 8 to move in the moving process, thus, the two conducting rods 8 can be driven to mutually approach and then contact the tool to be detected in the center, when the two conductive rods 8 abut against the designated portion of the tool to be tested, the power supply device 10 is turned on, then, the corresponding detection result of the tools can be obtained according to the state of the indicator light 11, so that the user can smoothly complete the insulation detection work of different parts of tools with different shapes and sizes by means of the displacement of each part of the whole device, and great convenience is brought to the user.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. A power supply insulation safety tool test device comprises a base (1) and is characterized in that two support columns (2) which are symmetrically arranged are fixedly connected to the upper end face of the base (1), the two support columns (2) are arranged away from each other, threaded holes (3) are formed in the ends, away from the base (1), of the two support columns (2), the two threaded holes (3) are symmetrically arranged, threaded columns (4) are connected to the two threaded holes (3) in a threaded mode, rotating holes (5) are formed in the two threaded columns (4), rotating columns (6) are connected to the two rotating holes (5) in a rotating mode, fixing holes (7) are formed in the rotating columns (6), conductive rods (8) are fixedly connected to the inner wall of the end, close to each other, of the two conductive holes (7), and conductive wires (9) are arranged at the ends, away from each other, of the two conductive rods (8), still be equipped with power supply unit (10) and pilot lamp (11) on the up end of base (1), two the one end that two conducting rod (8) were kept away from in conductor wire (9) sets up respectively on power supply unit (10) and pilot lamp (11), be equipped with fixing device on base (1).
2. The power supply insulation safety tool test device according to claim 1, wherein the fixing device comprises a sliding groove (12) arranged on the upper end face of the base (1), a sliding seat (13) is connected in the sliding groove (12), a lifting seat (14) is fixedly connected on the upper end face of the sliding seat (13), a threaded groove (15) is arranged on one side wall of the lifting seat (14) far away from the base (1), a threaded seat (16) is connected in the threaded groove (15), a rotating disc (17) is fixedly connected on one side wall of the threaded seat (16) far away from the base (1), a supporting disc (18) is rotatably connected on one side wall of the rotating disc (17) far away from the base (1), two supporting rods (19) are fixedly connected on one side wall of the supporting disc (18) far away from the base (1), and the two supporting rods (19) are arranged far away from each other, two all be equipped with screw thread aperture (20) on bracing piece (19), two screw thread aperture (20) are mutual symmetry setting, two equal threaded connection has threaded rod (21), two in screw thread aperture (20) the equal fixedly connected with insulator head (22) of one end that threaded rod (21) are close to each other.
3. The power supply insulation safety tool test device according to claim 1, wherein four wheel covers (23) symmetrically arranged with each other are rotatably connected to the lower end surface of the base (1), rotating shafts (24) are fixedly connected to the inner walls of the four wheel covers (23), and rolling wheels (25) are rotatably connected to the four rotating shafts (24).
4. The power supply insulation safety tool test device according to claim 1, wherein two support columns (2) are provided with limiting holes (26), two limiting rods (27) are slidably connected in the two limiting holes (26), the two limiting rods (27) are arranged in an L shape, and the two limiting rods (27) are fixedly connected to a rotating column (6).
5. A power supply insulation safety tool testing device according to claim 1, wherein a rotating groove (28) is formed in each of the inner walls of the two rotating holes (5), an annular disc (29) is rotatably connected in each of the two rotating grooves (28), and the two annular discs (29) are respectively and fixedly connected to the two rotating columns (6).
6. The power supply insulation safety tool test device according to claim 1, wherein a handle (30) is fixedly connected to the outer wall of one end of each of the two threaded columns (4) far away from each other.
7. The power supply insulation safety tool test device according to claim 2, wherein an operating rod (31) is fixedly connected to the lower end face of the rotating disc (17), and the operating rod (31) is arranged in an L shape.
8. A power supply insulation safety tool test device according to claim 2, wherein the sliding groove (12) is arranged in a T shape, and the sliding seat (13) is matched with the sliding groove (12) in shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111011199.4A CN113740681A (en) | 2021-08-31 | 2021-08-31 | Power supply insulation safety tool testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111011199.4A CN113740681A (en) | 2021-08-31 | 2021-08-31 | Power supply insulation safety tool testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113740681A true CN113740681A (en) | 2021-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111011199.4A Pending CN113740681A (en) | 2021-08-31 | 2021-08-31 | Power supply insulation safety tool testing device |
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| CN (1) | CN113740681A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108132432A (en) * | 2017-12-25 | 2018-06-08 | 芜湖市鸿坤汽车零部件有限公司 | A kind of insulating ladder Withstand test device |
| CN109884348A (en) * | 2018-12-03 | 2019-06-14 | 金华送变电工程有限公司 | A kind of high-tension cable ac voltage withstanding test insulating support |
| CN210742433U (en) * | 2019-08-30 | 2020-06-12 | 广东毓秀科技有限公司 | Novel rail transit cable insulation monitoring sensor |
| CN211603428U (en) * | 2019-12-29 | 2020-09-29 | 徐州久利电子有限公司 | Differential mode inductance turn-to-turn impact voltage resistance testing device |
| CN212131945U (en) * | 2020-04-16 | 2020-12-11 | 福建清禹工程管理有限公司 | Water conservancy construction fastening processing apparatus |
| CN212693941U (en) * | 2020-07-09 | 2021-03-12 | 无锡市中兴电力建设有限公司 | Preventive test device for insulating tools |
-
2021
- 2021-08-31 CN CN202111011199.4A patent/CN113740681A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108132432A (en) * | 2017-12-25 | 2018-06-08 | 芜湖市鸿坤汽车零部件有限公司 | A kind of insulating ladder Withstand test device |
| CN109884348A (en) * | 2018-12-03 | 2019-06-14 | 金华送变电工程有限公司 | A kind of high-tension cable ac voltage withstanding test insulating support |
| CN210742433U (en) * | 2019-08-30 | 2020-06-12 | 广东毓秀科技有限公司 | Novel rail transit cable insulation monitoring sensor |
| CN211603428U (en) * | 2019-12-29 | 2020-09-29 | 徐州久利电子有限公司 | Differential mode inductance turn-to-turn impact voltage resistance testing device |
| CN212131945U (en) * | 2020-04-16 | 2020-12-11 | 福建清禹工程管理有限公司 | Water conservancy construction fastening processing apparatus |
| CN212693941U (en) * | 2020-07-09 | 2021-03-12 | 无锡市中兴电力建设有限公司 | Preventive test device for insulating tools |
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