CN111796218A - Electronic transformer winding deformation tester - Google Patents
Electronic transformer winding deformation tester Download PDFInfo
- Publication number
- CN111796218A CN111796218A CN202010949901.0A CN202010949901A CN111796218A CN 111796218 A CN111796218 A CN 111796218A CN 202010949901 A CN202010949901 A CN 202010949901A CN 111796218 A CN111796218 A CN 111796218A
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- fixed
- electronic transformer
- winding deformation
- limiting
- elastic
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- 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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/72—Testing of electric windings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/16—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention discloses an electronic transformer winding deformation tester which comprises a fixed shell and a tester body fixed in the fixed shell, wherein one side of the fixed shell is provided with a buffering limiting part, and two side walls of the fixed shell are rotatably connected with elastic parts which give a thrust to the buffering limiting part through pin shafts. According to the invention, when the buffering limiting part rotates to be close to one side of the fixed shell, the elastic part and the buffering limiting part can be fixed through screwing of the locking bolt and the threaded hole, after the data line is connected with the tester body, the data line can be fixed under the action of the electric push rod, the pressing plate and the boss, so that the falling of the data line is avoided, the data line is distributed in a wavy manner under the action of the elastic telescopic part and the idler wheel, and when the data line is pulled due to mistaken collision, the buffering effect can be achieved, the data line protection effect is achieved, and the service life of the data line is prolonged.
Description
Technical Field
The invention relates to the technical field of transformer winding deformation testers, in particular to an electronic transformer winding deformation tester.
Background
The transformer winding deformation tester is an instrument for measuring the winding deformation of a transformer according to the national electric power industry standard DL/T911-2004, and mainly judges the winding deformation possibly occurring in the transformer according to the change degree of the amplitude-frequency response characteristic by detecting the amplitude-frequency response characteristic of each winding of the transformer and comparing the detection result longitudinally or transversely. According to the transformer winding deformation frequency response tester, the internal fault of the transformer can be accurately judged by adopting a FRA (frequency response analysis) method which is developed and perfected in developed countries in the world according to the measurement of the characteristic parameters of the internal winding of the transformer.
The existing transformer winding deformation tester cannot fix and clamp the data connecting line when in use, the data connecting line is disconnected from the tester due to the fact that the data connecting line is touched by a worker by mistake, normal transmission of data is affected, and measured data is faulted, so that secondary test is needed, the time of the worker is wasted, and the transformer winding deformation tester is not beneficial to wide popularization and use.
Therefore, an electronic transformer winding deformation tester is provided.
Disclosure of Invention
The invention aims to: in order to solve the problems, the invention provides an electronic transformer winding deformation tester.
In order to achieve the purpose, the invention adopts the following technical scheme:
an electronic transformer winding deformation tester comprises a fixed shell and a tester body fixed in the fixed shell, one side of the fixed shell is provided with a buffering and limiting part, two side walls of the fixed shell are rotatably connected with elastic pieces which give a thrust to the buffering and limiting part through pin shafts, the elastic part consists of a sleeve, a first spring and a moving rod, the pin shaft is provided with a limiting part for limiting the elastic part, a limiting pin penetrates through the moving rod, a second spring and a flange are arranged outside the limiting pin, an inclined surface is formed on one side of the limiting pin close to the tester body, the side wall of the fixed shell is provided with an accommodating groove, a fixed pin is fixed on the wall of the accommodating groove, a hemispherical limiting block and a moving block are arranged outside the fixed pin, the two sides of the moving block are both in a truncated cone shape, the side wall of the limiting block is provided with a cavity, and a spring III is fixed on the side wall of the cavity;
the buffer limiting part comprises two cover plates and a connecting column for fixing the two cover plates, an elastic part is fixed on one side of each of the two cover plates close to each other, a roller is installed at the end part of the elastic part, one of the two cover plates is provided with an electric push rod, a pressing plate is fixed at the telescopic end of the electric push rod, and a boss is formed on the other cover plate;
the elastic telescopic piece comprises a connecting cylinder fixed on the cover plate, a telescopic rod penetrates through the end portion of the connecting cylinder, a first magnet is fixed on the inner wall of the connecting cylinder, and a second magnet which is repulsive to the first magnet is fixed on the end portion of the telescopic rod.
As a further description of the above technical solution:
and a positioning groove is formed at one side of the boss close to the pressing plate.
As a further description of the above technical solution:
two adjacent elastic pieces at different heights are distributed in a staggered mode.
As a further description of the above technical solution:
the end part of the moving rod penetrates into the inner cavity of the sleeve to be abutted against the spring in the sleeve.
As a further description of the above technical solution:
the outer wall of the roller is provided with an annular groove for accommodating the electric wire.
As a further description of the above technical solution:
the locating part is including cup jointing the semicircle dish in round pin off-plate portion, it has locking bolt to run through on the arc wall and the arc wall to have on the semicircle dish, have the screw hole with locking bolt looks adaptation on the lateral wall of fixed casing.
As a further description of the above technical solution:
the arc-shaped groove and the pin shaft are arranged concentrically.
As a further description of the above technical solution:
and heat dissipation holes are formed in two side walls of the fixed shell.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. according to the invention, when the buffering limiting part rotates to be close to one side of the fixed shell, the elastic part and the buffering limiting part can be fixed through screwing of the locking bolt and the threaded hole, after the data line is connected with the tester body, the data line can be fixed under the action of the electric push rod, the pressing plate and the boss, so that the falling of the data line is avoided, the data line is distributed in a wavy manner under the action of the elastic telescopic part and the idler wheel, and when the data line is pulled due to mistaken collision, the buffering effect can be achieved, the data line protection effect is achieved, and the service life of the data line is prolonged.
2. According to the invention, when the buffering limiting part is positioned in the accommodating groove, the two limiting pins are close to each other under the action of the second spring, and a thrust is given to the buffering limiting part under the action of the first spring, so that the limiting pins are attached to the side walls of the limiting blocks, the buffering limiting part is fixed, the space occupation is reduced, the whole device can be conveniently stored and carried, the end parts of the limiting pins are formed with inclined planes, the two sides of the moving block are both arranged in a circular truncated cone shape, the limiting blocks are provided with cavities for accommodating the moving blocks, the limitation on the buffering limiting part can be conveniently relieved, and the operation of workers can be conveniently carried out.
3. In the invention, the positioning groove is formed on the upper surface wall of the boss, thereby avoiding the scattered distribution of the data lines and facilitating the arrangement of the data lines.
Drawings
Fig. 1 is a structural schematic diagram of a buffer limiting part of an electronic transformer winding deformation tester in an unfolded state according to the present invention;
fig. 2 is a structural schematic diagram of a buffer limiting part of the electronic transformer winding deformation tester in a storage state according to the present invention;
FIG. 3 is a schematic diagram of a partially enlarged structure A of an electronic transformer winding deformation tester according to the present invention;
fig. 4 is a schematic structural diagram of a solid-state housing of an electronic transformer winding deformation tester according to the present invention in a front view;
FIG. 5 is a schematic diagram of a partial enlarged structure B of an electronic transformer winding deformation tester according to the present invention;
FIG. 6 is a schematic diagram of a side view of a boss of an electronic transformer winding deformation tester according to the present invention;
FIG. 7 is a schematic diagram of an internal structure of a limiting block of the electronic transformer winding deformation tester provided by the invention;
fig. 8 is a schematic side view of an elastic expansion piece of an electronic transformer winding deformation tester according to the present invention.
Illustration of the drawings:
1. a stationary housing; 2. accommodating grooves; 3. a tester body; 4. a sleeve; 5. a travel bar; 6. a buffer limiting part; 7. a first spring; 8. locking the bolt; 9. a threaded hole; 10. a semicircular disc; 11. an arc-shaped slot; 12. a bevel; 13. a second spring; 14. a spacing pin; 15. a limiting block; 16. a flange; 17. a moving block; 18. a fixing pin; 19. a pin shaft; 20. heat dissipation holes; 21. a cavity; 22. a third spring; 601. a cover plate; 602. connecting columns; 603. an elastic extensible member; 604. an electric push rod; 605. pressing a plate; 606. a boss; 607. a roller; 608. positioning a groove; 609. an annular groove; 6031. a magnet I; 6032. a connecting cylinder; 6033. a second magnet; 6034. a telescopic rod.
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1-8, an electronic transformer winding deformation tester comprises a fixed housing 1 and a tester body 3 fixed inside the fixed housing 1, wherein one side of the fixed housing 1 is provided with a buffering limiting part 6, two side walls of the fixed housing 1 are rotatably connected with elastic members for providing a thrust for the buffering limiting part 6 through a pin shaft 19, each elastic member comprises a sleeve 4, a spring one 7 and a moving rod 5, one end of the pin shaft 19 is fixedly connected with the sleeve 4, the other end of the pin shaft 19 is rotatably matched with the fixed housing 1 through a bearing, the end part of the moving rod 5 penetrates through an inner cavity of the sleeve 4 to be abutted against the spring one 7 inside the sleeve 4, the spring one 7 provides a thrust for the buffering limiting part 6 through the moving rod 5, the pin shaft 19 is provided with a limiting part for limiting the elastic members, a limiting pin 14 penetrates through the moving rod 5, and the outside of the limiting pin 14 is provided with a spring two, the second spring 13 is sleeved outside the limit pin 14, the flange 16 is fixedly connected with the limit pin 14, an inclined surface 12 is formed on one side, close to the tester body 3, of the limit pin 14, pressing on the buffering limit part 6 is facilitated, the side wall of the fixed shell 1 is provided with the accommodating groove 2, the groove wall of the accommodating groove 2 is fixed with the fixed pin 18, the outside of the fixed pin 18 is provided with the hemispherical limit block 15, and the two sides of the movable block 17 are both arranged in a truncated cone shape, the movable block 17 is in sliding fit with the fixed pin 18, the side wall of the limit block 15 is provided with the cavity 21, the side wall of the cavity 21 is fixed with the third spring 22, the cavity 21 is used for accommodating the movable block 17, and under the action of the third spring 22;
the buffering limiting part 6 comprises two cover plates 601 and a connecting column 602 for fixing the two cover plates 601, the connecting column 602 is fixedly connected with the moving rod 5, one side of each of the two cover plates 601 close to each other is fixedly provided with an elastic telescopic part 603, the end parts of the elastic telescopic parts 603 are provided with rollers 607, the two adjacent elastic telescopic parts 603 at different heights are distributed in a staggered manner, the rollers 607 at different heights are far away from each other under the action of the elastic telescopic parts 603, the rollers 607 are attached to the inner walls of the cover plates 601, so that the data lines are distributed in a wavy manner, when the data lines are subjected to external force, a buffering effect is achieved, one of the two cover plates 601 is provided with an electric push rod 604, the telescopic end of the electric push rod 604 is fixedly provided with a pressing plate 605, the other cover plate is formed with a boss 606, and the electric push rod 604 can drive the pressing plate 605;
Different from the embodiment 1
Example 2
Referring to fig. 6, a positioning groove 608 is formed on one side of the boss 606 close to the pressing plate 605, the positioning groove 608 is arranged in an arc shape, so that the data line is conveniently positioned, the data line is prevented from being distributed in a scattered manner, and the data line is conveniently sorted by workers.
Different from the embodiment 1
Example 3
Please refer to fig. 3 and 4, the limiting member includes a semicircular disc 10 sleeved outside the pin shaft 19, the pin shaft 19 is fixedly connected with the semicircular disc 10, the semicircular disc 10 is provided with an arc-shaped groove 11, and a locking bolt 8 penetrates through the arc-shaped groove 11, the diameter of the end portion of the locking bolt 8 is larger than the groove width of the arc-shaped groove 11, the side wall of the fixing housing 1 is provided with a threaded hole 9 matched with the locking bolt 8, the arc-shaped groove 11 and the pin shaft 19 are concentrically arranged, the locking bolt 8 is rotated, the locking bolt 8 is screwed with the threaded hole 9, the end portion of the locking bolt 8 is tightly attached to the side wall of the semicircular disc 10, under the action of friction force, the limiting effect of the elastic member is achieved, so that the elastic member is.
Different from the embodiment 1
Example 4
Referring to fig. 4, the two side walls of the fixed casing 1 are provided with heat dissipation holes 20, and heat generated by the tester body 3 can be dissipated to the outside of the fixed casing 1 through the heat dissipation holes 20, so as to prevent a large amount of heat from abutting against the inside of the fixed casing 1.
The working principle is as follows: under the normal state, under the action of the second spring 13 and the flange 16, the two limit pins 14 are provided with elastic force which is close to each other, under the action of the first spring 7, the buffer limit part 6 is provided with a thrust force, the limit pins 14 are attached to the side wall of the limit block 15, the limit of the buffer limit part 6 is realized, the buffer limit part 6 is prevented from being separated from the inside of the accommodating groove 2, the whole device can be conveniently accommodated and carried by a worker, when a data line is required to be connected with the tester body 3, the buffer limit part 6 is pushed towards the direction of the tester body 3, due to the arrangement of the inclined plane 12, the limit pins 14 move to one side of the moving block 17 which is far away from the limit block 15, then the buffer limit part 6 is loosened, under the action of the first spring 7, the buffer limit part 6 and the moving rod 5 are provided with a thrust force, the end parts of the limit pins 14 drive the moving block 17, the moving block 17 moves to the inside of the cavity 21, because both sides of the moving block 17 are arranged in a circular truncated cone shape, the limit pin 14 can be separated from the moving block 17, the limit pin 14 moves to one side of the curved surface of the limit block 15, the limit of the buffering limit part 6 is released, then the elastic part is rotated, the buffering limit part 6 is close to an interface of the tester body 3, the data wire passes through the elastic expansion pieces 603 and the positioning grooves 608 which are distributed in a staggered mode and then is connected with the tester body 3, the electric push rod 604 is opened, the expansion end of the electric push rod 604 drives the pressing plate 605 to compress the data wire, the falling of the data wire can be avoided, under the action of the elastic expansion pieces 603 and the rollers 607, the data wire is distributed in a wavy mode, when the data wire is pulled due to mistaken collision, the buffering effect of protecting the data wire can be achieved, and the service life of the data wire is prolonged.
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. The electronic transformer winding deformation tester comprises a fixed shell (1) and a tester body (3) fixed inside the fixed shell (1), and is characterized in that one side of the fixed shell (1) is provided with a buffering limiting part (6), two side walls of the fixed shell (1) are rotatably connected with an elastic part for providing thrust for the buffering limiting part (6) through a pin shaft (19), the elastic part consists of a sleeve (4), a spring I (7) and a moving rod (5), the pin shaft (19) is provided with a limiting part for limiting the elastic part, the moving rod (5) is penetrated with a limiting pin (14), the outer part of the limiting pin (14) is provided with a spring II (13) and a flange (16), one side of the limiting pin (14) close to the tester body (3) is formed with an inclined plane (12), and the side wall of the fixed shell (1) is provided with an accommodating groove (2), a fixed pin (18) is fixed on the wall of the accommodating groove (2), a hemispherical limited block (15) and a moving block (17) which is arranged in a circular truncated cone shape on two sides are arranged outside the fixed pin (18), a cavity (21) is formed in the side wall of the limited block (15), and a third spring (22) is fixed on the side wall of the cavity (21);
the buffer limiting part (6) comprises two cover plates (601) and a connecting column (602) for fixing the two cover plates (601), one side, close to the two cover plates (601), of each cover plate is fixedly provided with an elastic telescopic piece (603), the end part of each elastic telescopic piece (603) is provided with a roller (607), one of the two cover plates (601) is provided with an electric push rod (604), the telescopic end of each electric push rod (604) is fixedly provided with a pressure plate (605), and the other cover plate is formed with a boss (606);
elastic expansion piece (603) is including fixing connecting cylinder (6032) on apron (601), the tip of connecting cylinder (6032) is run through there is telescopic link (6034), be fixed with magnet (6031) on the inner wall of connecting cylinder (6032), the end fixing of telescopic link (6034) has magnet two (6033) that repulses with magnet (6031).
2. The winding deformation tester of the electronic transformer as claimed in claim 1, wherein a positioning groove (608) is formed on one side of the boss (606) close to the pressure plate (605).
3. An electronic transformer winding deformation tester according to claim 2, characterized in that two adjacent elastic expansion members (603) located at different heights are distributed in a staggered manner.
4. An electronic transformer winding deformation tester according to claim 3, characterized in that the end of the moving rod (5) penetrates into the inner cavity of the sleeve (4) and abuts against the first spring (7) inside the sleeve (4).
5. An electronic transformer winding deformation tester according to claim 4, characterized in that the rollers (607) have on their outer wall annular grooves (609) for receiving wires.
6. The winding deformation tester of the electronic transformer according to claim 1, wherein the limiting member comprises a semicircular disc (10) sleeved outside the pin shaft (19), the semicircular disc (10) is provided with an arc-shaped groove (11), the arc-shaped groove (11) is provided with a locking bolt (8) in a penetrating manner, and the side wall of the fixed shell (1) is provided with a threaded hole (9) matched with the locking bolt (8).
7. The electronic transformer winding deformation tester according to claim 6, characterized in that the arc-shaped groove (11) is concentrically arranged with the pin shaft (19).
8. The winding deformation tester for electronic transformer as claimed in claim 1, wherein the two side walls of the fixed housing (1) are provided with heat dissipation holes (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010949901.0A CN111796218B (en) | 2020-09-10 | 2020-09-10 | Electronic transformer winding deformation tester |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010949901.0A CN111796218B (en) | 2020-09-10 | 2020-09-10 | Electronic transformer winding deformation tester |
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| Publication Number | Publication Date |
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| CN111796218A true CN111796218A (en) | 2020-10-20 |
| CN111796218B CN111796218B (en) | 2020-12-01 |
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| CN202010949901.0A Active CN111796218B (en) | 2020-09-10 | 2020-09-10 | Electronic transformer winding deformation tester |
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Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08179000A (en) * | 1994-12-26 | 1996-07-12 | Fujikura Ltd | Testing terminal structure for power cable |
| WO2003063020A1 (en) * | 2002-01-18 | 2003-07-31 | Georgia Tech Research Corporation | Systems and methods for multiple winding impulse frequency response analysis test |
| CN1499118A (en) * | 2002-11-11 | 2004-05-26 | ��ʽ���紻������ | Guiding and holding clamp of drag cable |
| CN202628096U (en) * | 2012-05-11 | 2012-12-26 | 北京天地华泰采矿工程技术有限公司 | Comprehensive mechanized road-header self-carrying cable dragging and storing device |
| CN108871244A (en) * | 2018-06-15 | 2018-11-23 | 武汉智图科技有限责任公司 | One kind being used for Surveying Engineering flatness calibrating installation |
| CN109038043A (en) * | 2018-07-22 | 2018-12-18 | 肖涵 | A kind of data line with Telescopic |
| CN208906966U (en) * | 2018-09-28 | 2019-05-28 | 鑫国发(北京)国际智能科技有限公司 | A kind of data line bracket of internet electric business equipment |
| CN209327393U (en) * | 2018-12-04 | 2019-08-30 | 云南同聚电力建设有限公司 | A kind of falling-proof type deformation of transformer winding tester |
| CN209673037U (en) * | 2018-12-29 | 2019-11-22 | 河北华电聚能电力技术有限公司 | A kind of deformation of transformer winding tester |
| CN210129635U (en) * | 2019-05-06 | 2020-03-06 | 李克敏 | Prevent data line that drags |
| CN210418807U (en) * | 2019-08-30 | 2020-04-28 | 河南德克起重配件有限公司 | Winding drum device for hoisting equipment |
| CN210479441U (en) * | 2019-06-28 | 2020-05-08 | 上海汽车配件工业联合有限公司 | Storage device for small and medium-sized accessories of automobile |
| CN210854680U (en) * | 2019-08-23 | 2020-06-26 | 刘迪 | Building site is with removing cable frame |
| CN211123107U (en) * | 2019-09-24 | 2020-07-28 | 成都凯迪飞研科技有限责任公司 | Aviation cable insulation detection device |
| CN211292985U (en) * | 2019-11-21 | 2020-08-18 | 四川华东电气集团有限公司 | Transformer winding tester based on frequency response method and low-voltage impedance method |
-
2020
- 2020-09-10 CN CN202010949901.0A patent/CN111796218B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08179000A (en) * | 1994-12-26 | 1996-07-12 | Fujikura Ltd | Testing terminal structure for power cable |
| WO2003063020A1 (en) * | 2002-01-18 | 2003-07-31 | Georgia Tech Research Corporation | Systems and methods for multiple winding impulse frequency response analysis test |
| CN1499118A (en) * | 2002-11-11 | 2004-05-26 | ��ʽ���紻������ | Guiding and holding clamp of drag cable |
| CN202628096U (en) * | 2012-05-11 | 2012-12-26 | 北京天地华泰采矿工程技术有限公司 | Comprehensive mechanized road-header self-carrying cable dragging and storing device |
| CN108871244A (en) * | 2018-06-15 | 2018-11-23 | 武汉智图科技有限责任公司 | One kind being used for Surveying Engineering flatness calibrating installation |
| CN109038043A (en) * | 2018-07-22 | 2018-12-18 | 肖涵 | A kind of data line with Telescopic |
| CN208906966U (en) * | 2018-09-28 | 2019-05-28 | 鑫国发(北京)国际智能科技有限公司 | A kind of data line bracket of internet electric business equipment |
| CN209327393U (en) * | 2018-12-04 | 2019-08-30 | 云南同聚电力建设有限公司 | A kind of falling-proof type deformation of transformer winding tester |
| CN209673037U (en) * | 2018-12-29 | 2019-11-22 | 河北华电聚能电力技术有限公司 | A kind of deformation of transformer winding tester |
| CN210129635U (en) * | 2019-05-06 | 2020-03-06 | 李克敏 | Prevent data line that drags |
| CN210479441U (en) * | 2019-06-28 | 2020-05-08 | 上海汽车配件工业联合有限公司 | Storage device for small and medium-sized accessories of automobile |
| CN210854680U (en) * | 2019-08-23 | 2020-06-26 | 刘迪 | Building site is with removing cable frame |
| CN210418807U (en) * | 2019-08-30 | 2020-04-28 | 河南德克起重配件有限公司 | Winding drum device for hoisting equipment |
| CN211123107U (en) * | 2019-09-24 | 2020-07-28 | 成都凯迪飞研科技有限责任公司 | Aviation cable insulation detection device |
| CN211292985U (en) * | 2019-11-21 | 2020-08-18 | 四川华东电气集团有限公司 | Transformer winding tester based on frequency response method and low-voltage impedance method |
Non-Patent Citations (1)
| Title |
|---|
| 刘伟家: "基于超声波测距的变压器绕组变形检测系统", 《万方学位论文数据库》 * |
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