CN112421557B - But rotation regulation's cable connecting device - Google Patents
But rotation regulation's cable connecting device Download PDFInfo
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- CN112421557B CN112421557B CN202011196577.6A CN202011196577A CN112421557B CN 112421557 B CN112421557 B CN 112421557B CN 202011196577 A CN202011196577 A CN 202011196577A CN 112421557 B CN112421557 B CN 112421557B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G15/00—Cable fittings
- H02G15/08—Cable junctions
- H02G15/18—Cable junctions protected by sleeves, e.g. for communication cable
Abstract
The invention discloses a rotatably adjustable cable connecting device, which comprises a host and a rotating assembly, wherein the rotating assembly is movably arranged on the host and comprises a supporting piece and a limiting piece, one side of the supporting piece is connected to the host, and the other side of the supporting piece is connected with the limiting piece; the first plug-in unit comprises a sleeve, and the sleeve is movably connected with the host through a rotating assembly; according to the invention, the adjusting device is designed between the host and the plug-in, the angle of the plug-in can be rotationally adjusted before the plug-in is connected, the clamping connection between the two plug-ins is convenient, the clamping difficulty and poor contact are avoided, the host and the slave are more stable in communication after the connection, the clamping connection can be realized only by pushing two ends during the connection, the operation is simple, and the trouble of workers is greatly saved.
Description
Technical Field
The invention relates to the technical field of cable connection, in particular to a rotatably adjustable cable connecting device.
Background
At present, a protection and automation professional team and team is responsible for overhaul and maintenance work of a six-coil water power grid station of 60 kV and above, and relates to the aspects of regular inspection, defect elimination, overhaul technical improvement, capital construction acceptance and the like, cable testing tools such as a laser light pen, a network tester, an optical power meter, an optical multimeter, a digital multimeter and the like are frequently used in a working site to check cables such as a cable core, an Ethernet cable, a secondary cable core, a coaxial cable and the like, wherein the work comprises the work of cable on-off test, optical fiber core on-off test, optical fiber attenuation test, Ethernet cable transmission reliability test, process quality test and the like;
the matching of the host and the slave is needed in the on-off test of the coaxial cable core or the control cable core, the test of the optical cable core and the test of the Ethernet cable, the host and the slave need to be connected through a cable, and the traditional connection mode often has the phenomenon of poor connection and influences the field test, so that a connecting device needs to be designed to ensure the stable connection of the host and the slave.
Disclosure of Invention
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section, as well as in the abstract and the title of the invention of this application, simplifications or omissions may be made to avoid obscuring the purpose of the section, the abstract and the title, and such simplifications or omissions are not intended to limit the scope of the invention.
The present invention has been made in view of the problems occurring in the prior art.
Therefore, the present invention has been made to solve the problems that a cable connection between a master and a slave is unstable when a multifunctional test tool is used, signal interruption or connection trouble is easily generated, and alignment and engagement are difficult due to misalignment of cable devices at both ends when the cables are connected.
In order to solve the technical problems, the invention provides the following technical scheme: a rotatably adjustable cable connecting device comprises a host and a rotating assembly, wherein the rotating assembly is movably arranged on the host and comprises a supporting piece and a limiting piece, one side of the supporting piece is connected to the host, and the other side of the supporting piece is connected with the limiting piece; and the first plug-in unit comprises a sleeve, and the sleeve is movably connected with the host through the rotating assembly.
As a preferable aspect of the rotatably adjustable cable connection device of the present invention, wherein: the supporting piece comprises a bottom plate, supporting plates and connecting plates, the connecting plates are respectively and vertically arranged on two sides of the same top surface of the bottom plate, the supporting plates are vertically arranged on the connecting plates, and the supporting plates and the bottom plate are kept parallel in end face.
As a preferable aspect of the rotatably adjustable cable connection device of the present invention, wherein: the locating part includes gag lever post and stopper, the gag lever post sets up perpendicularly on the bottom plate, the stopper sets up in the backup pad.
As a preferable aspect of the rotatably adjustable cable connection device of the present invention, wherein: the sleeve bottom sets up the spacing groove, the stopper is one section arc piece in the circular shape, and its diameter is unanimous and with the coaxial setting of spacing groove with the limiting groove, the stopper inlays in the spacing groove.
As a preferable aspect of the rotatably adjustable cable connection device of the present invention, wherein: the limiting rods are symmetrically arranged on two sides of the top surface of the bottom plate and are higher than the supporting plate, and the limiting rods extend into the sleeves to be movably connected; the bottom plate center sets up the round hole, and the bottom surface sets up the spring, and the spring sets up about the round hole symmetry, and bottom plate is connected to spring one end, and the host computer is connected to the other end.
As a preferable aspect of the rotatably adjustable cable connection device of the present invention, wherein: a sliding groove and a clamping groove are arranged in the sleeve close to the bottom end, the sliding groove is of an annular structure, the clamping groove is of a square structure and is uniformly arranged around the inner wall of the sleeve in a circumferential mode, and the clamping groove is located at the top end of the sliding groove and is communicated with the sliding groove; the limiting rod is symmetrically arranged around the round hole, clamping blocks are vertically arranged at the top end of the limiting rod in the direction out of the axis of the sleeve, the clamping blocks extend into the sliding grooves, and the structural sizes of the clamping blocks are matched with the clamping grooves.
As a preferable aspect of the rotatably adjustable cable connection device of the present invention, wherein: the second plug-in unit is arranged on the slave unit and comprises a connecting cylinder, a barrier piece and a second cable, and the barrier piece is arranged in the connecting cylinder and close to the outer port; one end of the second cable is fixedly arranged on the slave machine, and the other end of the second cable penetrates through the connecting cylinder and the blocking piece.
As a preferable aspect of the rotatably adjustable cable connection device of the present invention, wherein: first plug-in components still includes embedded cover and first cable, embedded cover one end and sleeve fixed connection, the other end outwards extends, embedded cover and the inside intercommunication of sleeve, first cable one end fixed connection host computer, the other end pass round hole, sleeve and embedded cover.
As a preferable aspect of the rotatably adjustable cable connection device of the present invention, wherein: the first plug-in unit also comprises a sliding piece, the outer diameter and the inner diameter of the sleeve are the same as those of the connecting cylinder, the outer diameter of the embedded sleeve is the same as that of the connecting cylinder, and the embedded sleeve can extend into the connecting cylinder; the sliding piece is sleeved on the outer wall of the embedded sleeve and is movably connected with the embedded sleeve.
As a preferable aspect of the rotatably adjustable cable connection device of the present invention, wherein: all set up a groove and a piece in first plug-in components and the second plug-in components, a piece internal diameter is all the same with first cable and second cable, and first cable and second cable all erect on a piece, prop up the piece and inlay in a groove.
The invention has the beneficial effects that: according to the invention, the adjusting device is designed between the host and the plug-in, the angle of the plug-in can be rotationally adjusted before the plug-in is connected, the clamping connection between the two plug-ins is convenient, the clamping difficulty and poor contact are avoided, the host and the slave are more stable in communication after the connection, the clamping connection can be realized only by pushing two ends during the connection, the operation is simple, and the trouble of workers is greatly saved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. Wherein:
FIG. 1 is an assembly view of a rotating assembly and a first insert in a first embodiment.
Fig. 2 is a structural view of a rotating assembly in the first embodiment.
Fig. 3 is a view showing the connection between the rotary member and the interior of the first card in the first embodiment.
Fig. 4 is a diagram showing the structure of a first card in the second embodiment.
FIG. 5 is a cross-sectional view of the first and second inserts in a second embodiment.
Fig. 6 is a view showing a structure of connection between a first card and a second card in the second embodiment.
Fig. 7 is an assembly view of the overall structure in the second embodiment.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Furthermore, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Example 1
Referring to fig. 1 to 3, a first embodiment of the present invention provides a rotatably adjustable cable connection device, which includes a main body 101, a rotating assembly 200, and a first plug-in unit 300, wherein the first plug-in unit 300 is movably connected to the main body 101 through the rotating assembly 200, and an angle of the first plug-in unit 300 can be controlled by rotating the rotating assembly 200.
The rotating assembly 200 includes a supporting member 201 and a limiting member 202, the supporting member 201 is used for connecting the host 101, the limiting member 202 is used for connecting the first plug-in unit 300 and can adjust the first plug-in unit 300 by rotation, specifically, the first plug-in unit 300 includes a sleeve 301, and a bottom end of the sleeve 301 is connected with the limiting member 202 and then can be movably connected with the host 101.
Further, the supporting member 201 comprises a bottom plate 201a, a supporting plate 201b and a connecting plate 201c, a spring 201a-2 is arranged on the bottom surface of the bottom plate 201a, one end of the spring 201a-2 is connected with the host, the other end of the spring 201a-2 is connected with the bottom plate 201a, and the rotating assembly 200 can elastically move under the action of the spring 201 a-2; the connection plates 201c are fixedly connected to both sides of the top surface of the bottom plate 201a and vertically connected to the bottom plate, the support plates 201b are respectively vertically connected to the connection plates 201c on both sides, finally the support plates 201b are kept horizontal to the plate surface of the bottom plate 201a, and the bottom end surfaces of the sleeves 301 are rotatably mounted on the support plates 201 b.
Further, a circular limiting groove 302 is arranged on the end face of the bottom of the sleeve 301, a limiting block 202b is arranged on the supporting plate 201b, wherein the limiting block 202 comprises a limiting rod 202a and a limiting block 202b, the limiting block 202b is formed by taking an electrocardiogram coaxial with the sleeve 301 as a circle center and an annular end face with a radius consistent with that of the limiting groove 302 as a bulge, and cutting an arc block on the supporting plate 201b, and the limiting block 202b is embedded into the limiting groove 302 to stabilize the sleeve 301.
The sleeve 301 is further provided with a sliding groove 301a and a clamping groove 301b near the bottom end, the sliding groove 301a and the clamping groove 301b are arranged at the top of the limiting groove 302, the sliding groove 301a and the clamping groove 301b are communicated with each other and are communicated with the inner space of the sleeve 301, specifically, the clamping groove 301b is of a square structure and is uniformly arranged around the inner wall of the sleeve 301 in a circumferential mode, the sliding grooves 301a are of an annular structure, the limiting rods 202a are vertically arranged on the top surface of the bottom plate 201a, the number of the limiting rods is two, the limiting rods are symmetrically arranged about the axial lead of the sleeve 301, the height of the limiting rods 202a exceeds the height of the supporting plate 201b and extends into the sleeve 301, clamping blocks 202a-1 are vertically arranged at the top end of the limiting rods 202a in the direction outside the axial lead, and the clamping blocks 202a-1 are matched with the clamping groove 301 b.
The center of the bottom plate 201a is provided with a round hole 201a-1, the spring 201a-2 and the limiting rod 202a are symmetrically arranged around the round hole 201a-1, when the spring 201a-2 is pressed down, the limiting rod 202a falls into the sliding groove 301a, the sleeve 301 can rotate along the limiting rod 202a, when the spring 201a-2 is loosened, the limiting rod 202a is jacked into the clamping groove 301b, and then the sleeve 301 is limited and cannot rotate.
Example 2
Referring to fig. 4 to 7, a second embodiment of the present invention is based on the previous embodiment, and further includes a second card 400 and a slave 102, where the second card 400 is fixedly connected to the slave 102, and the second card 400 and the first card 300 can be engaged with each other.
The first plug-in unit 300 further comprises an embedded sleeve 303, a first cable 305 and a sliding piece 306, the second plug-in unit 400 comprises a connecting cylinder 401, a barrier piece 402 and a second cable 403, one end of a sleeve 301 is connected with the host 101, the other end of the sleeve 301 is fixedly connected with the embedded sleeve 303, the sleeve 301 and the embedded sleeve 303 are communicated internally and coaxially, the first cable 305 is positioned inside the sleeve 301 and the embedded sleeve 303 and is also coaxial, one end of the first cable 305 is fixed on the host 101 and then passes through a round hole 201a-1, the sleeve 301 and the embedded sleeve 303, and the other end of the first cable is flush with the outer end face of the embedded sleeve 303; the connector barrel 401 is fixed at one end to the slave 102, a barrier 402 is provided at the other end of the connector barrel 401 near the port, and a second cable 403 is located inside the connector barrel 401 with one end connected to the slave 102 and then passes through the barrier 402.
The outer diameter and the inner diameter of the sleeve 301 are the same as those of the connecting cylinder 401, the outer diameter of the embedded sleeve 303 is the same as that of the connecting cylinder 401, and the embedded sleeve 303 can extend into the connecting cylinder 401.
Further, the barrier 402 includes a barrier ring 402a and a moving sleeve 402b, the connecting cylinder 401 is fixedly provided with an end ring 401a near the port, the end ring 401a is fixedly connected with the inner wall of the connecting cylinder 401, the inner diameter and the outer diameter of the end ring 401a, the inner diameter and the outer diameter of the end ring 402a and the outer diameter of the embedded sleeve 303 are all the same and are coaxially arranged, the moving sleeve 402b is fixedly connected with the barrier ring 402a and is coaxially arranged with the barrier ring 402a, the outer diameter of the moving sleeve 402b is the same as the inner diameter of the barrier ring 402a, the moving sleeve 402b is embedded between the end ring 401a and the second cable 403 and is sleeved on the second cable 403, when the first insert 300 is aligned with the second insert 400 and then the two are close, the embedded sleeve 303 is contacted with the barrier ring 402a and is continuously pushed to the rear end, and then is blocked by the end ring 401a, and the first cable 305 is connected with the second cable 403.
First elastic elements T are further disposed between the spacer ring 402a and the end ring 401a, the number of the first elastic elements T is at least two, in this embodiment, four first elastic elements T are disposed and evenly distributed circumferentially at equal intervals between the spacer ring 402a and the end ring 401a, and are used for rebounding the spacer ring 402a, so that the spacer ring 402a can be restored to an original state, and the cable can be protected continuously when not in use.
Further, all be provided with breach C on spacer ring 402a and the end ring 401a, breach C is square structure, be located between the adjacent first elastic component T and breach C also even circumference distributes, breach C on spacer ring 402a and the breach C on the end ring 401a are in the coplanar, set up square groove 303a on the embedded cover 303, square groove 303a corresponds breach C setting, square groove 303a sets up on the outer wall of embedded cover 303, extend and run through the intercommunication to the outer terminal surface of embedded cover 303, the quantity and the breach C quantity of square groove 303a are the same, and all be in the coplanar, square groove 303a also even circumference distributes.
Further, the first plug-in unit 300 further includes a sliding member 306, the sliding member 306 is movably disposed on an outer wall of the embedded sleeve 303, specifically, the sliding member 306 includes a push ring 306a and a push rod 306b, an inner diameter of the push ring 306a is the same as an outer diameter of the embedded sleeve 303, the embedded sleeve 303 penetrates through the push ring 306a, a protrusion 306d is disposed on the embedded sleeve 303 and extends into each square groove 303a, the push rod 306b is disposed in the square groove 303a, one end of the push rod is hinged to the protrusion 306d, two sides of the square groove 303a are provided with axial grooves 303b, and the axial grooves 303b are shorter than the square grooves 303a and are not communicated with an outer end surface of the embedded sleeve 303.
The sliding member 306 further includes a connecting shaft 306C, the connecting shaft 306C is transversely disposed in the square groove 303a, two ends of the connecting shaft 306C extend into the shaft groove 303b, the push rod 306b is hinged to the protrusion 306d through the connecting shaft 306C, in addition, one end of the push rod 306b extending outwards is provided with a pointed block 306b-1, the pointed block 306b-1 extends towards the direction outside the outer wall of the embedded sleeve 303, the push rod 306b can extend into the gap C, and the pointed block 306b-1 can be clamped with the end ring 401a, a second elastic member K is disposed between the push rod 306b and the square groove 303a, one end of the second elastic member K is connected with the square groove 303a, and the other end is fixedly connected with the push rod 306b, after the push ring 306a is pushed to extend the push rod 306b into the gap C, the force is applied to the end ring 401a under the action of the second elastic member K to clamp the pointed block 306b-1 in the end ring 401a, and at the same time, the first insert 300 and the second insert 400 are fixedly connected, when the ring is to be removed, the pushing ring 306a is pulled back to release the engagement between the pointed blocks 306b-1 and the end ring 401a, and the spacer ring 402a is pushed outward by the first elastic member T.
It is important to note that the construction and arrangement of the present application as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperatures, pressures, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter recited in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of this invention. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present inventions. Therefore, the present invention is not limited to a particular embodiment, but extends to various modifications that nevertheless fall within the scope of the appended claims.
Moreover, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those unrelated to the presently contemplated best mode of carrying out the invention, or those unrelated to enabling the invention).
It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure, without undue experimentation.
It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (8)
1. A rotationally adjustable cable connection device, characterized by: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
the rotating assembly (200) is movably arranged on the host (101), the rotating assembly (200) comprises a supporting piece (201) and a limiting piece (202), one side of the supporting piece (201) is connected to the host (101), and the other side of the supporting piece (201) is connected with the limiting piece (202); and the number of the first and second groups,
the first plug-in unit (300) comprises a sleeve (301), wherein the sleeve (301) is movably connected with the main unit (101) through the rotating assembly (200);
the supporting piece (201) comprises a bottom plate (201 a), supporting plates (201 b) and connecting plates (201 c), the connecting plates (201 c) are respectively vertically arranged on two sides of the same top surface of the bottom plate (201 a), the supporting plates (201 b) are vertically arranged on the connecting plates (201 c), and the supporting plates (201 b) and the bottom plate (201 a) keep parallel in end surface;
the limiting piece (202) comprises a limiting rod (202 a) and a limiting piece (202 b), the limiting rod (202 a) is vertically arranged on the bottom plate (201 a), and the limiting piece (202 b) is arranged on the supporting plate (201 b).
2. The rotatably adjustable cable connection of claim 1, wherein: the sleeve (301) bottom sets up spacing groove (302), stopper (202 b) are one section arc piece in the circular shape, and its diameter is unanimous and with spacing groove (302) coaxial setting, stopper (202 b) inlay in spacing groove (302).
3. A rotatably adjustable cable connection apparatus as claimed in claim 1 or 2, wherein: the limiting rods (202 a) are symmetrically arranged on two sides of the top surface of the bottom plate (201 a) and are higher than the supporting plate (201 b), and the limiting rods (202 a) extend into the sleeve (301) to be movably connected;
the center of the bottom plate (201 a) is provided with a round hole (201 a-1), the bottom surface of the bottom plate is provided with a spring (201 a-2), the spring (201 a-2) is symmetrically arranged around the round hole (201 a-1), one end of the spring (201 a-2) is connected with the bottom plate (201 a), and the other end of the spring is connected with the host (101).
4. A rotatably adjustable cable connection apparatus as claimed in claim 3, wherein: a sliding groove (301 a) and a clamping groove (301 b) are arranged in the sleeve (301) close to the bottom end, the sliding groove (301 a) is of an annular structure, the clamping groove (301 b) is of a square structure and is uniformly arranged around the inner wall of the sleeve (301) in a circumferential mode, and the clamping groove (301 b) is located at the top end of the sliding groove (301 a) and is communicated with the sliding groove (301 a);
the limiting rod (202 a) is symmetrically arranged relative to the round hole (201 a-1), the top end of the limiting rod is vertically provided with a clamping block (202 a-1) towards the direction outside the axis of the sleeve (301), the clamping block (202 a-1) extends into the sliding groove (301 a), and the size of the clamping block (202 a-1) is matched with that of the clamping groove (301 b).
5. A rotatably adjustable cable connection apparatus as claimed in claim 1 or 2, wherein: the plug-in connector further comprises a second plug-in connector (400) and a slave machine (102), wherein the second plug-in connector (400) is arranged on the slave machine (102), the second plug-in connector (400) comprises a connecting cylinder (401), a barrier (402) and a second cable (403), and the barrier (402) is arranged in the connecting cylinder (401) and close to an outer port;
one end of the second cable (403) is fixedly arranged on the slave (102), and the other end of the second cable passes through the connecting cylinder (401) and the barrier (402).
6. The rotatably adjustable cable connection apparatus of claim 5, wherein: first plug-in components (300) still include embedded cover (303) and first cable (305), embedded cover (303) one end and sleeve (301) fixed connection, the other end outwards extends, and embedded cover (303) and sleeve (301) are inside to be communicate, first cable (305) one end fixed connection host computer (101), round hole (201 a-1), sleeve (301) and embedded cover (303) are passed to the other end.
7. The rotatably adjustable cable connection apparatus of claim 6, wherein: the first plug-in unit (300) further comprises a sliding piece (306), the outer diameter and the inner diameter of the sleeve (301) are the same as those of the connecting cylinder (401), the outer diameter of the embedded sleeve (303) is the same as that of the connecting cylinder (401), and the embedded sleeve (303) can extend into the connecting cylinder (401);
the sliding part (306) is sleeved on the outer wall of the embedded sleeve (303) and is movably connected with the embedded sleeve.
8. The rotatably adjustable cable connection apparatus of claim 7, wherein: all set up branch groove (A) and a piece (B) in first plug-in components (300) and second plug-in components (400), a piece (B) internal diameter is all the same with first cable (305) and second cable (403), and first cable (305) and second cable (403) all erect on a piece (B), inlay in a branch groove (A) a piece (B).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011196577.6A CN112421557B (en) | 2020-10-31 | 2020-10-31 | But rotation regulation's cable connecting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011196577.6A CN112421557B (en) | 2020-10-31 | 2020-10-31 | But rotation regulation's cable connecting device |
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| CN112421557A CN112421557A (en) | 2021-02-26 |
| CN112421557B true CN112421557B (en) | 2022-04-01 |
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| CN113012897B (en) * | 2021-04-01 | 2022-03-25 | 华能上海石洞口发电有限责任公司 | Movable sleeve of 220KV transformer |
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| CN111517175A (en) * | 2020-04-22 | 2020-08-11 | 大唐环境产业集团股份有限公司 | Wired vibration sensor's that can freely fix a position from take-up |
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| CN112421557A (en) | 2021-02-26 |
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