CN105490241A - Pipe jacket plugging device - Google Patents
Pipe jacket plugging device Download PDFInfo
- Publication number
- CN105490241A CN105490241A CN201610017596.5A CN201610017596A CN105490241A CN 105490241 A CN105490241 A CN 105490241A CN 201610017596 A CN201610017596 A CN 201610017596A CN 105490241 A CN105490241 A CN 105490241A
- Authority
- CN
- China
- Prior art keywords
- sleeve
- cable
- plugging device
- pipe jacket
- type plugging
- 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.)
- Granted
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Classifications
-
- 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
- H02G15/013—Sealing means for cable inlets
Landscapes
- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The invention discloses a pipe jacket plugging device, which comprises a sleeve, a second sleeve and an annular sealing element, wherein an opening through which a cable passes is formed in the first sleeve; the opening through which a cable conduit passes is formed in the second sleeve; the second sleeve is connected with the first sleeve to form a space for accommodating the annular sealing element; and the annular sealing element is used for sealing gaps between the first sleeve and the cable and between the second sleeve and the cable conduit. Therefore, integrated plugging and sealing of the cable and the cable conduit are achieved by the pipe jacket plugging device, so that a power cable fault due to the fact that a water drop or a foreign matter enters the cable conduit from the outer wall of the cable or the cable conduit is effectively prevented.
Description
Technical field
The invention discloses a kind of pipe jacket-type plugging device, belong to laying cable equipment technical field.
Background technology
In order to anti-sealing, mouse and other foreign matters enter cable duct internal sabotage cable, need to carry out mending-leakage and shutoff to cable duct.Common mending-leakage and the mode of shutoff have: fire-proof mud, pipe plugging rubber pneumatic bag and other be placed in the plugging device etc. of pipe interior.Tradition fire-proof mud price is low, but easily solidifies cracking, and fixing seal persistence is poor; Pipe plugging rubber pneumatic bag and other ductus arteriosus occluder effects being placed in pipe interior are better than traditional fire-proof mud, but shutoff rubber pneumatic bag or plugging device need be placed between cable and cable duct inwall and realize shutoff, when less for pipe diameter or between cable and cable duct gap is less, above-mentioned pipe plugging rubber pneumatic bag and other plugging devices being placed in pipe interior cannot insert the gap between cable and cable duct, therefore, shutoff object cannot be reached.
The pipe jacket-type plugging device of prior art, if publication number is that CN102882177 patent document discloses a kind of outdoor cable protection tube outlet insulator seal plug, it comprises overcoat, silicon rubber inner covering and bolt and forms.The edge, both sides of overcoat is provided with locking edge, locking edge is provided with and passes for bolt through hole overcoat being fixed on pipeline exit, the inwall of overcoat and locking edge is all provided with silicon rubber inner covering.Described overcoat by upper ring cap, spacer shell and under change cover and integrally form, spacer shell is between upper ring cap and lower ring set, and upper ring cap and silicon rubber inner covering are wrapped on cable, under change cover with silicon rubber inner covering be wrapped on the outer wall of pipeline, fix with bolt again, with the outlet of shutoff cable duct.
But; block head is fixed on cable duct exit by the through hole that the outdoor cable protection tube outlet insulator seal plug in above-mentioned patent documentation mainly relies on bolt to pass in locking edge; need to tighten or unscrew multiple bolt successively; cause installation or removal very inconvenient; install or remove the length that expends time in; and easily because bolt is not tightened the gap between inside and cable or cable duct causing block head; can not reliably seal; water droplet or other foreign matters easily enter in cable duct from gap, cause distribution accident.
Summary of the invention
The technical problem to be solved in the present invention is that the block head that cable duct that in prior art, less to cable duct diameter or cable and cable duct gap is less carries out shutoff installs inconvenient, that sealing effectiveness is bad problem, thus provides that a kind of block head is easy for installation, the pipe jacket-type plugging device of good sealing effect.
Pipe jacket-type plugging device provided by the invention, comprising:
First sleeve, has the opening that current supply cable passes;
Second sleeve, has the opening that current supply cable pipeline passes, and described second sleeve by syndeton and the first sleeve connection, and forms spatial accommodation;
Lip ring, is arranged in described spatial accommodation, for sealing described first sleeve and the second sleeve and the gap between cable and cable duct.
Preferably, described syndeton is be arranged on the internal thread on one of described first sleeve and/or second sleeve, and be arranged on described first sleeve and/or the second sleeve on another with the external screw thread of described screw-internal thread fit.
Preferably, described first sleeve and/or the second sleeve are divided by the two half-unit distributed vertically and are spliced to form by splicing construction.
Further, on the contact-making surface that the two half-unit that described splicing construction is molded over described first sleeve and/or the second sleeve is divided; Described splicing construction comprises the trapezoidal groove that the slot bottom width be molded on two half-unit/mono-is greater than A/F, and is molded over two half-unit and divides the trapezoidal projection that another coordinates with trapezoidal groove.
Again further, the longitudinal section of described trapezoidal groove and trapezoidal projection is isosceles trapezoid.
Preferably, described lip ring has first hermetically-sealed construction in gap between described first sleeve of sealing and cable and seals second hermetically-sealed construction in space between described second sleeve and cable duct.
Preferably, described first hermetically-sealed construction along described lip ring circumference forming open outwards and at least one seal groove of protruding to cable center direction of bottom is.
Preferably, the longitudinal section of described second hermetically-sealed construction is the loop configuration of wave molding.
Further, described first sleeve inner forms shoulder hole, and described second hermetically-sealed construction is fixed in described shoulder hole.
Preferably, the outer wall of described first sleeve and the second sleeve have two planar sections be parallel to each other respectively.
The present invention has the following advantages relative to prior art:
1. pipe jacket-type plugging device provided by the invention, for being set in cable duct end, for being socketed the space also between hermetically-sealed cable pipeline and cable from outside, being threaded and forming the space holding lip ring of easy accessibility is adopted between first sleeve with the second sleeve, owing to there is not the part such as screw or bolt in pipe jacket-type plugging device, therefore can not complete dismounting quickly and easily by specific purpose tool, save the preventive maintenance time of power cable.
2. pipe jacket-type plugging device provided by the invention, the first sleeve and the second sleeve are divided into two half-unit and divide, and two half-unit is divided by splicing construction splicing composition.Splicing construction comprises the little trapezoidal projection of the outer imperial palace be molded on half portion/mono-contact-making surface, and is molded over the trapezoidal groove of the correspondence on second half part contact surface.Second half part relative that two half-unit is divided longitudinally is slided trapezoidal projection importing trapezoidal groove splicing composition.Therefore, cable or cable duct can not be inserted in easily by the long restriction of cable, and not hinder the first sleeve and the second sleeve to be threaded.
3. pipe jacket-type plugging device provided by the invention, forms shoulder hole in the second sleeve, is fixed in the shoulder hole of the second sleeve by the second hermetically-sealed construction of lip ring, and after lip ring pressurized, the second hermetically-sealed construction generation deformation and cable duct are formed and seal; First hermetically-sealed construction of lip ring is fixed on the outlet step place of cable duct, described first hermetically-sealed construction along lip ring circumference forming open outwards and bottom protrude to cable center direction, this first hermetically-sealed construction has a seal groove at least, therefore bottom seal groove, radial direction is protruded to cable center direction further after lip ring pressurized, seal together with being formed at least with cable.Thus, pipe jacket-type plugging device achieves the integral type shutoff sealing to cable duct and cable, thus prevents from water droplet or foreign matter from entering in cable duct from cable or cable duct outer wall causing power failure.
Accompanying drawing explanation
In order to be illustrated more clearly in the specific embodiment of the invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of pipe jacket-type plugging device of the present invention;
Fig. 2 is the decomposing schematic representation of the pipe jacket-type plugging device shown in Fig. 1;
Fig. 3 is the structure chart after pipe jacket-type plugging device of the present invention is installed;
The A-A that Fig. 4 is the pipe jacket-type plugging device shown in Fig. 3 to profile;
Reference numeral: 1-second swivel nut; The trapezoidal projection of 11-; 2-lip ring; 3-first swivel nut; 31-shoulder hole; 4-cable duct; 5-cable.
Embodiment
Be clearly and completely described technical scheme of the present invention below in conjunction with accompanying drawing, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition above-mentioned term concrete meaning in the present invention can be understood.
In addition, if below in the described different execution mode of the present invention involved technical characteristic do not form conflict each other and just can be combined with each other.
Embodiment
The invention provides a kind of pipe jacket-type plugging device, as shown in Figure 1, comprising:
First sleeve 3, has the opening that current supply cable 5 passes;
Second sleeve 1, has the opening that current supply cable pipeline 4 passes, and described second sleeve 1 is connected with the first sleeve 3 by syndeton, and forms spatial accommodation;
Lip ring 2, is arranged in described spatial accommodation, for sealing described first sleeve 3 and the second sleeve 1 and the gap between cable 5 and cable duct 4.
As shown in Figure 4, the pipe jacket-type plugging device of the present embodiment is used for being set in cable duct 4 end, for being socketed the space also between hermetically-sealed cable pipeline 4 and cable 5 from outside, lip ring 2 is positioned at the inner chamber be made up of the first sleeve 3, second sleeve 1 and cable 5, cable duct 4.First sleeve 3 is connected rear protection with the second sleeve 1 and extrudes lip ring 2; produce lip ring 2 shutoff first sleeve 3 of deformation and the gap between cable 5, second sleeve 1 and cable duct 4; thus cable 5 and cable duct 4 are sealed, prevent water droplet or other foreign matters from entering in cable duct 4 and cause power cable fault.
Further, described syndeton is be arranged on the internal thread on one of described first sleeve 3, and be arranged on the second sleeve 1 on another with the external screw thread of described screw-internal thread fit.
Certainly, internal thread also can be arranged on the second sleeve 1, and external screw thread also can be arranged on the first sleeve 3.
The connected mode of the first sleeve 3 and the second sleeve 1 is for being threaded, be threaded in installation or removal process and quickly and easily the first sleeve 3 and the second sleeve 1 can not be tightened or unscrew by specific purpose tool, therefore, during power failure, repairing and the preventive maintenance time of power cable can effectively be saved.As shown in Figure 2, preferably, described screw thread can be fine thread.
As the distortion of syndeton, be also connected by buckle between the first sleeve 3 with the second sleeve 1, be connected together between the first sleeve 3 and the second sleeve 1 during installation, also to lip ring 2 continu to press, can seal.
Described first sleeve 3 and/or the second sleeve 1 are divided by the two half-unit distributed vertically and are spliced to form by splicing construction.
Further, on the contact-making surface that the two half-unit that described splicing construction is molded over described first sleeve 3 and/or the second sleeve 1 is divided; Described splicing construction comprises the trapezoidal groove that the slot bottom width be molded on two half-unit/mono-is greater than A/F, and is molded over two half-unit and divides another coordinates with trapezoidal groove trapezoidal protruding 11.Trapezoidal protruding 11 and trapezoidal groove all refer to that longitudinal section is trapezoidal, be preferably isosceles trapezoid.
As shown in Figure 2, the first sleeve 3 and the second sleeve 1 are divided by two half-unit and are spliced by splicing construction, therefore can not by cable 5 line length limit easily installation sleeve on cable 5 or cable duct 4, convenient splicing.Described splicing construction is positioned at two half-unit and divides on respective axial contact-making surface.Two contact-making surfaces of half portion/mono-form respectively two trapezoidal protruding 11, another two contact-making surfaces of half part form respectively two for trapezoidal projection splice 11 trapezoidal groove.
As one distortion, two half-unit is divided and can be made identical, and can form trapezoidal projection by a contact-making surface in two contact-making surfaces of half part, another contact-making surface forms trapezoidal groove.
When assembling the first sleeve 3 or the second sleeve 1, the half portion that two half-unit is divided divides second half part relatively longitudinally to slide trapezoidal projection importing trapezoidal groove splicing composition first sleeve 3 or the second sleeve 1.
As one distortion, described trapezoidal protruding 11 and trapezoidal groove can become the protruding and corresponding T-shaped groove of T-shaped, and other projections that the first sleeve 3 or the second sleeve 1 can not radially be departed from and corresponding groove.
Described lip ring 2 has first hermetically-sealed construction in gap between described first sleeve 3 of sealing and cable 5 and seals second hermetically-sealed construction in gap between described second sleeve 1 and cable duct 4.
As shown in Figure 4, lip ring 2 is arranged in and is threaded a pipe 4 spatial accommodations formed by the first sleeve 3, second sleeve 1 and cable 5, cable.First sleeve 3 is connected rear extruding lip ring 2 with the second sleeve 1 makes it produce deformation.Lip ring 2 comprises the first hermetically-sealed construction and the second hermetically-sealed construction, and the first hermetically-sealed construction is used for the gap between shutoff first sleeve 3 and cable 5; Second hermetically-sealed construction is used for the gap between shutoff second sleeve 1 and cable duct 4, therefore, pipe jacket-type plugging device achieves the integral type shutoff sealing to cable 5 and cable duct 4, thus prevents water droplet or foreign matter from entering initiation power cable fault in cable duct 4.
Particularly, described first hermetically-sealed construction along the circumferential forming open of described lip ring 2 outwards and at least one seal groove of protruding to cable 5 center position of bottom is.
When lip ring 2 is squeezed, the seal groove that its first hermetically-sealed construction protrudes to cable 5 center position further protrudes to cable 5 center position, heaves, thus makes to be formed between the first hermetically-sealed construction and cable 5 to seal; If the quantity of described seal groove is two, then there is two seals between the first hermetically-sealed construction and cable 5, by that analogy, can have more multiple tracks, seal groove more at most sealing effectiveness is better.Therefore, can prevent water droplet or other foreign matters from entering in cable duct 4 from cable 5.
The longitudinal section of described second hermetically-sealed construction is the loop configuration of wave molding.
When lip ring 2 is squeezed, longitudinal section on its second hermetically-sealed construction is that the loop configuration pressurized of wave molding is to radially-inwardly heaving, then formed between lip ring 2 and cable duct 4 outer wall and seal, therefore can prevent water droplet or other foreign matters from entering in cable duct 4 from cable duct 4 outer wall.
Described first sleeve 3 inside forms shoulder hole 31, and described second hermetically-sealed construction is fixed in described shoulder hole 31.
Shoulder hole 31, for the second hermetically-sealed construction of stationary annular seal 2, prevents lip ring 2 from sliding axially because being squeezed, and produces deformation and cable 5, cable duct 4 are formed and seal after making its pressurized.
Further, the outer wall of described first sleeve 3 and the second sleeve 1 have two planar sections be parallel to each other respectively.
The outer wall of the first sleeve 3 and the second sleeve 1 arranges planar section, can clamp and drive it to rotate by the instrument such as convenient wrench.When not by instrument, described two planar sections be parallel to each other also can handled easily personnel exert a force, and prevent from skidding, conveniently the first sleeve 3 or the second sleeve 1 are fixed, tighten or unscrew another sleeve.This planar part surface can roughening process, increases frictional force when rotating.
As one distortion, described planar section can be arranged to and the cancave cambered surface becoming finger to adapt.
That invents as to pipe jacket-type stopper materials is preferred, and described lip ring 2 material is low-phenyl silicone rubber, and fire-protection rating is V0; First sleeve 3, second sleeve 1 material is polyphthalamide, and fire-protection rating is V0.
Obviously, above-described embodiment is only for clearly example being described, and the restriction not to execution mode.For those of ordinary skill in the field, other multi-form change or variations can also be made on the basis of the above description.Here exhaustive without the need to also giving all execution modes.And thus the apparent change of extending out or variation be still among the protection range of the invention.
Claims (10)
1. pipe jacket-type plugging device, is characterized in that, comprising:
First sleeve (3), has the opening that current supply cable (5) passes;
Second sleeve (1), has the opening that current supply cable pipeline (4) passes, and described second sleeve (1) is connected with the first sleeve (3) by syndeton, and forms spatial accommodation;
Lip ring (2), is arranged in described spatial accommodation, for sealing described first sleeve (3) and the second sleeve (1) and the gap between cable (5) and cable duct (4).
2. pipe jacket-type plugging device according to claim 1, it is characterized in that, described syndeton for being arranged on the internal thread on one of described first sleeve (3) and/or second sleeve (1), and be arranged on described first sleeve (3) and/or the second sleeve (1) on another with the external screw thread of described screw-internal thread fit.
3. pipe jacket-type plugging device according to claim 1 and 2, is characterized in that, described first sleeve (3) and/or the second sleeve (1) are divided by the two half-unit distributed vertically and be spliced to form by splicing construction.
4. pipe jacket-type plugging device according to claim 3, is characterized in that, on the contact-making surface that the two half-unit that described splicing construction is molded over described first sleeve (3) and/or the second sleeve (1) is divided; Described splicing construction comprises the trapezoidal groove that the slot bottom width be molded on two half-unit/mono-is greater than A/F, and is molded over two half-unit and divides the trapezoidal projection that another coordinates with trapezoidal groove (11).
5. pipe jacket-type plugging device according to claim 4, is characterized in that, the longitudinal section of described trapezoidal groove and trapezoidal projection (11) is isosceles trapezoid.
6. the pipe jacket-type plugging device device according to any one of claim 1-4, it is characterized in that, described lip ring (2) has first hermetically-sealed construction in gap between described first sleeve (3) of sealing and cable (5) and seals second hermetically-sealed construction in space between described second sleeve (1) and cable duct (4).
7. pipe jacket-type plugging device according to claim 6, it is characterized in that, described first hermetically-sealed construction along described lip ring (2) circumferential forming open outwards and at least one seal groove of protruding to cable (5) center position of bottom is.
8. the pipe jacket-type plugging device according to 6 of claim, is characterized in that, the longitudinal section of described second hermetically-sealed construction is the loop configuration of wave molding.
9. the pipe jacket-type plugging device according to 8 of claim, is characterized in that, described first sleeve (3) inside forms shoulder hole (31), and described second hermetically-sealed construction is fixed in described shoulder hole (31).
10. the pipe jacket-type plugging device according to any one of claim 1-9, is characterized in that, the outer wall of described first sleeve (3) and the second sleeve (1) has two planar sections be parallel to each other respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610017596.5A CN105490241B (en) | 2016-01-12 | 2016-01-12 | Pipe jacket-type plugging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610017596.5A CN105490241B (en) | 2016-01-12 | 2016-01-12 | Pipe jacket-type plugging device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105490241A true CN105490241A (en) | 2016-04-13 |
| CN105490241B CN105490241B (en) | 2017-11-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610017596.5A Expired - Fee Related CN105490241B (en) | 2016-01-12 | 2016-01-12 | Pipe jacket-type plugging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105490241B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106329454A (en) * | 2016-10-19 | 2017-01-11 | 杭州洪鑫电力科技有限公司 | Column jacket plugging device |
| CN106711916A (en) * | 2016-11-29 | 2017-05-24 | 江门市智云共创电力设备科技有限公司 | Metering distribution box hole blocking device |
| CN107658742A (en) * | 2017-10-31 | 2018-02-02 | 国家电网公司 | A kind of plugging cable hole device for distribution box |
| CN108480442A (en) * | 2018-05-25 | 2018-09-04 | 长园电力技术有限公司 | A kind of recovery device of cable metal bellows |
| CN109088368A (en) * | 2018-09-21 | 2018-12-25 | 贵州电网有限责任公司 | Novel cable pipeline plug |
| CN109167309A (en) * | 2018-10-17 | 2019-01-08 | 杭州博源电力设备有限公司 | A kind of bracket blocked for cable |
| CN110416960A (en) * | 2019-08-02 | 2019-11-05 | 广西金步电力科技有限公司 | A kind of subway plugging device |
| CN113595020A (en) * | 2021-08-03 | 2021-11-02 | 保定正开电缆附件有限公司 | Cable terminal fastening device |
| CN114447676A (en) * | 2020-11-02 | 2022-05-06 | 台达电子工业股份有限公司 | Charging gun and stress relieving structure thereof |
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| US5336850A (en) * | 1990-12-10 | 1994-08-09 | General Signal Corporation | Electrical power cord entry device |
| CN1808811A (en) * | 2005-12-29 | 2006-07-26 | 国家***第一海洋研究所 | Sealed submarine cable |
| CN101232168A (en) * | 2008-01-07 | 2008-07-30 | 浙江大元泵业有限公司 | Leak-proof cable joint |
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| CN203871823U (en) * | 2014-03-28 | 2014-10-08 | 朱新平 | Variable diameter sealing gland for connecting wire pipe and cable of distribution box |
| CN205283065U (en) * | 2016-01-12 | 2016-06-01 | 浙江亿电电气有限公司 | Outside of tubes shell type plugging device |
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2016
- 2016-01-12 CN CN201610017596.5A patent/CN105490241B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5336850A (en) * | 1990-12-10 | 1994-08-09 | General Signal Corporation | Electrical power cord entry device |
| CN1808811A (en) * | 2005-12-29 | 2006-07-26 | 国家***第一海洋研究所 | Sealed submarine cable |
| CN101232168A (en) * | 2008-01-07 | 2008-07-30 | 浙江大元泵业有限公司 | Leak-proof cable joint |
| CN202696080U (en) * | 2012-08-15 | 2013-01-23 | 李德胜 | Stainless-steel anti-explosion seal gland |
| CN203871823U (en) * | 2014-03-28 | 2014-10-08 | 朱新平 | Variable diameter sealing gland for connecting wire pipe and cable of distribution box |
| CN205283065U (en) * | 2016-01-12 | 2016-06-01 | 浙江亿电电气有限公司 | Outside of tubes shell type plugging device |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106329454A (en) * | 2016-10-19 | 2017-01-11 | 杭州洪鑫电力科技有限公司 | Column jacket plugging device |
| CN106329454B (en) * | 2016-10-19 | 2018-08-21 | 杭州洪鑫电力科技有限公司 | Column tube plugging device |
| CN106711916A (en) * | 2016-11-29 | 2017-05-24 | 江门市智云共创电力设备科技有限公司 | Metering distribution box hole blocking device |
| CN107658742A (en) * | 2017-10-31 | 2018-02-02 | 国家电网公司 | A kind of plugging cable hole device for distribution box |
| CN108480442A (en) * | 2018-05-25 | 2018-09-04 | 长园电力技术有限公司 | A kind of recovery device of cable metal bellows |
| CN109088368A (en) * | 2018-09-21 | 2018-12-25 | 贵州电网有限责任公司 | Novel cable pipeline plug |
| CN109167309A (en) * | 2018-10-17 | 2019-01-08 | 杭州博源电力设备有限公司 | A kind of bracket blocked for cable |
| CN110416960A (en) * | 2019-08-02 | 2019-11-05 | 广西金步电力科技有限公司 | A kind of subway plugging device |
| CN114447676A (en) * | 2020-11-02 | 2022-05-06 | 台达电子工业股份有限公司 | Charging gun and stress relieving structure thereof |
| CN113595020A (en) * | 2021-08-03 | 2021-11-02 | 保定正开电缆附件有限公司 | Cable terminal fastening device |
Also Published As
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|---|---|
| CN105490241B (en) | 2017-11-14 |
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Granted publication date: 20171114 Termination date: 20190112 |