CN110221103A - A kind of oscillograph assembling probe - Google Patents

A kind of oscillograph assembling probe Download PDF

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Publication number
CN110221103A
CN110221103A CN201910653188.2A CN201910653188A CN110221103A CN 110221103 A CN110221103 A CN 110221103A CN 201910653188 A CN201910653188 A CN 201910653188A CN 110221103 A CN110221103 A CN 110221103A
Authority
CN
China
Prior art keywords
conducting wire
storage box
reel
oscillograph
spring
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.)
Pending
Application number
CN201910653188.2A
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Chinese (zh)
Inventor
张俊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guizhou University of Commerce
Original Assignee
Guizhou University of Commerce
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Guizhou University of Commerce filed Critical Guizhou University of Commerce
Priority to CN201910653188.2A priority Critical patent/CN110221103A/en
Publication of CN110221103A publication Critical patent/CN110221103A/en
Pending legal-status Critical Current

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/02General constructional details
    • G01R1/04Housings; Supporting members; Arrangements of terminals

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Leads Or Probes (AREA)

Abstract

The invention discloses a kind of assemblings of oscillograph to pop one's head in, belong to measuring device field, a kind of oscillograph assembling probe, including probing shell, the left end of probing shell is fixedly connected with conducting wire, the surface sliding sleeve of conducting wire is connected to storage box, storage box is equipped with groove, storage box is equipped with symmetrical card hole, storage box is equipped with symmetrical through-hole, rotation is socketed with reel in storage box, mounting groove is equipped in reel, wind spring is fixedly connected in mounting groove, the upper-end contact of wind spring is connected with baffle, the side of baffle is fixedly connected with mounting groove, the lower end of card hole is connected with kelly, the plug that it is arranged has the function of quickly connecting, improve the installation speed of assembling probe, save the time, and the reel being arranged has the function of automatic rolling conducting wire, it can be adjusted according to the needs the length of conducting wire, so that conducting wire will not be at random be placed on outer scrape Encounter object, improves the comfort of assembling probe.

Description

A kind of oscillograph assembling probe
Technical field
The present invention relates to measuring device fields, assemble and pop one's head in more specifically to a kind of oscillograph.
Background technique
Oscillograph is a kind of electronic measuring instrument that purposes is very extensive, it can invisible converting electrical signal at Observable image studies the change procedure of various electrical phenomenas convenient for people.
It needs that assembling is used to pop one's head in oscillograph use, but existing oscillograph assembling probe is mostly to pass through spiral shell The plug of assembling probe is fixed on the connecting column of oscillograph by the mode of line, more numerous in installation and removal assembling probe It is trivial time-consuming, and the conducting wire of existing oscillograph assembling probe setting is mostly arbitrarily scattered in outer, the conducting wire being scattered when in use When in use may scraping collision object, bring some inconvenience to user, reduce assembling probe comfort.
Summary of the invention
1. technical problems to be solved
Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a kind of assemblings of oscillograph to pop one's head in, it sets The plug set has the function of quickly connecting, and improves the installation speed of assembling probe, the reel saved the time, and be arranged Have the function of automatic rolling conducting wire, can be adjusted according to the needs the length of conducting wire, so that being placed on that conducting wire will not be at random is outer Scraping collision improves the comfort of assembling probe to object.
2. technical solution
To solve the above problems, the present invention adopts the following technical scheme that.
A kind of oscillograph assembling probe, including probing shell, the left end of the probing shell is fixedly connected with conducting wire, described The surface sliding sleeve of conducting wire is connected to storage box, and the storage box is equipped with groove, and the storage box is equipped with symmetrical card hole, the receipts Case is equipped with symmetrical through-hole, and rotation is socketed with reel in the storage box, is equipped with mounting groove, the peace in the reel Wind spring is fixedly connected in tankage, the upper-end contact of the wind spring is connected with baffle, and the side of the baffle is fixedly connected with peace Tankage, the lower end of the card hole are connected with kelly, and the lower end of the kelly is fixedly connected with fixture block, and the left end of the conducting wire is fixed It is connected with plug, binding post is plugged on the left of the plug, is equipped with card slot in the binding post, the plug that it is arranged has fast The function of speed connection, improves the installation speed of assembling probe, saves the time, and the reel being arranged is led with automatic rolling The function of line can be adjusted according to the needs the length of conducting wire, so that conducting wire will not be at random is placed on outer scraping collision to object, improve The comfort of assembling probe.
Further, rotation is socketed with reel in the groove, and the surface of the reel is fixedly connected by screw rod There is conducting wire, rotation is socketed with support rod in the reel, and the lower end of the support rod is fixedly connected with storage box, the volume of setting Line wheel has the function of rotation, so that conducting wire has the function of adjustment length.
Further, the upper end of the baffle is equipped with avoiding hollow groove, and contact is connected with the first spring in the avoiding hollow groove, described Support rod is socketed in first spring, the upper-end contact of first spring is connected with fixture block, when the first spring is by fixture block When extruding, have the function of that compression elasticity, elastic force make kelly have the function of being clamped automatically.
Further, the surface of the plug is fixedly connected with symmetrical two limit plates, and the shape of the limit plate is Arc, the limit plate are made of elastic conducting material, and the surface of the limit plate is connected with card slot, when plug is plugged on wiring When in column, limit plate makes plug have the function of automatic fastening.
Further, the surface of the plug is equipped with symmetrical locating slot, and contact is connected with the second bullet in the locating slot The upper-end contact of spring, the second spring is connected with limit plate, when extruding of the second spring by limit plate, has compression bullet The effect of power, elastic force make limit plate have the function of Rapid reset.
Further, the surface of the plug has been fixedly attached limited block, and the shape of the limited block is circle, the limit The left contact of position block is connected with binding post, and when plug is plugged in binding post, limited block has the function of limit.
Further, the lower end sliding sleeve of the fixture block is connected to support rod, and the upper end of the fixture block is fixedly connected with control Bar, the surface pivots of the control-rod are socketed with storage box, and the control-rod of setting moves up and down position for control fixture block, just Conducting wire is packed up in user, it is easy to operate.
3. beneficial effect
Compared with the prior art, the present invention has the advantages that
(1) plug of this programme setting has the function of quickly connecting, and the installation speed that assembling is popped one's head in is improved, when saving Between, and the reel being arranged has the function of automatic rolling conducting wire, can be adjusted according to the needs the length of conducting wire, so that conducting wire Will not be at random be placed on outer scraping collision to object, improve the comfort of assembling probe.
(2) rotation is socketed with reel in groove, and the surface of reel is fixedly connected with conducting wire by screw rod, in reel Rotation is socketed with support rod, and the lower end of support rod is fixedly connected with storage box, and the reel of setting has the function of rotation, so that Conducting wire has the function of adjustment length.
(3) upper end of baffle is equipped with avoiding hollow groove, and contact is connected with the first spring in avoiding hollow groove, and branch is socketed in the first spring The upper-end contact of strut, the first spring is connected with fixture block, when extruding of first spring by fixture block, the work with compression elasticity With elastic force makes kelly have the function of being clamped automatically.
(4) surface of plug is fixedly connected with symmetrical two limit plates, and the shape of limit plate is arc, and limit plate is bullet Property conductive material is made, and the surface of limit plate is connected with card slot, and when plug is plugged in binding post, limit plate has plug There is automatic fastening.
(5) surface of plug is equipped with symmetrical locating slot, and contact is connected with second spring in locating slot, second spring it is upper End in contact is connected with limit plate, when extruding of the second spring by limit plate, has the function of that compression elasticity, elastic force to limit Position plate has the function of Rapid reset.
(6) surface of plug has been fixedly attached limited block, and the shape of limited block is circle, the left contact connection of limited block There is binding post, when plug is plugged in binding post, limited block has the function of limit.
(7) the lower end sliding sleeve of fixture block is connected to support rod, and the upper end of fixture block is fixedly connected with control-rod, the surface of control-rod Rotation is socketed with storage box, and the control-rod of setting moves up and down position for control fixture block, packs up conducting wire convenient for user, grasps Make simple.
Detailed description of the invention
Fig. 1 is overall structure stereogram of the invention;
Fig. 2 is binding post mounting structure cross-sectional view of the invention;
Fig. 3 is the portion A enlarged drawing of the invention;
Fig. 4 is storage box mounting structure cross-sectional view of the invention;
Fig. 5 is reel and wind spring mounting structure top view of the invention.
Figure label explanation:
1 probing shell, 11 conducting wires, 2 storage boxes, 21 grooves, 22 card holes, 23 through-holes, 3 reels, 31 screw rods, 32 supports Bar, 33 mounting grooves, 34 wind springs, 35 baffles, 36 avoiding hollow grooves, 37 first springs, 4 fixture blocks, 41 kellies, 42 control-rods, 5 plugs, 51 Limited block, 52 limit plates, 53 locating slots, 54 second springs, 6 binding posts, 61 card slots.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the instruction such as term " on ", "lower", "inner", "outside", " top/bottom end " Orientation or positional relationship be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description the present invention and simplification retouch It states, rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, Therefore it is not considered as limiting the invention.In addition, term " first ", " second " are used for description purposes only, and cannot understand For indication or suggestion relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation " " is set Be equipped with ", " be arranged/connect ", " connection " etc., shall be understood in a broad sense, such as " connection ", may be a fixed connection, be also possible to removable Connection is unloaded, or is integrally connected;It can be mechanical connection, be also possible to be electrically connected;It can be directly connected, it can also be in Between medium be indirectly connected, can be the connection inside two elements.It for the ordinary skill in the art, can be specific Situation understands the concrete meaning of above-mentioned term in the present invention.
Embodiment 1:
Fig. 1-5, a kind of oscillograph assembling probe, including probing shell 1 are please referred to, Fig. 1-5 is please referred to, probing shell 1 Left end is fixedly connected with conducting wire 11, and the surface sliding sleeve of conducting wire 11 is connected to storage box 2, and storage box 2 is used to store additional length Conducting wire 11, storage box 2 are equipped with groove 21, and storage box 2 is equipped with symmetrical card hole 22, when kelly 41 sticks into card hole 22, spiral Wheel 3 stops operating, and storage box 2 is equipped with symmetrical through-hole 23, and symmetrical through-hole 23 is used to the both ends by conducting wire 11, storage box 2 Interior rotation is socketed with reel 3, and mounting groove 33 is equipped in reel 3, wind spring 34 is fixedly connected in mounting groove 33, when wind spring 34 It is squeezed to form screen resilience when reel 3 rotates, after the fixation that reel 3 loses kelly 41, screen resilience drives spiral Wheel 3, which rotates counterclockwise, has furled too long conducting wire 11, and wind spring 34 is in the state for squeezing and forming screen resilience, the upper termination of wind spring 34 Touching is connected with baffle 35, and baffle 35 is used to limit the position that moves up of wind spring 34, while limit fixture block 4 moves down position It sets, the side of baffle 35 is fixedly connected with mounting groove 33, and the lower end of card hole 22 is connected with kelly 41, and kelly 41 is symmetrical two A, the surface of kelly 41 is connected with reel 3, and the lower end of kelly 41 is fixedly connected with fixture block 4, and the shape of fixture block 4 is circle, is led The left end of line 11 is fixedly connected with plug 5, and the left side of plug 5 is plugged with binding post 6, and the left end of binding post 6, which is fixedly connected with, to be shown Wave device, binding post 6 is interior to be equipped with card slot 61.
Figure 4 and 5 are please referred to, rotation is socketed with reel 3 in groove 21, and the surface of reel 3 connects by the way that screw rod 31 is fixed It is connected to conducting wire 11, rotation is socketed with support rod 32 in reel 3, and the lower end of support rod 32 is fixedly connected with storage box 2, setting Reel 3 has the function of rotation, so that conducting wire 11 has the function of adjustment length, the upper end of baffle 35 is equipped with avoiding hollow groove 36, Contact is connected with the first spring 37 in avoiding hollow groove 36, and support rod 32, the upper termination of the first spring 37 are socketed in the first spring 37 Touching is connected with fixture block 4, when extruding of first spring 37 by fixture block 4, has the function of that compression elasticity, elastic force make kelly 41 Have the function of being clamped automatically.
Referring to Fig. 3, the surface of plug 5 is fixedly connected with symmetrical two limit plates 52, the shape of limit plate 52 is arc Shape, limit plate 52 are made of elastic conducting material, and the surface of limit plate 52 is connected with card slot 61, when plug 5 is plugged on binding post 6 When interior, limit plate 52 makes plug 5 have the function of automatic fastening, and the surface of plug 5 is equipped with symmetrical locating slot 53, locating slot Contact is connected with second spring 54 in 53, and the upper-end contact of second spring 54 is connected with limit plate 52, when second spring 54 by When the extruding of limit plate 52, have the function of that compression elasticity, elastic force make limit plate 52 have the function of Rapid reset.
Fig. 2 and 4 are please referred to, the surface of plug 5 has been fixedly attached limited block 51, and the shape of limited block 51 is circle, limit The left contact of block 51 is connected with binding post 6, and when plug 5 is plugged in binding post 6, limited block 51 has the function of limit, The lower end sliding sleeve of fixture block 4 is connected to support rod 32, and the upper end of fixture block 4 is fixedly connected with control-rod 42, and the surface of control-rod 42 turns Dynamic to be socketed with storage box 2, the control-rod 42 of setting moves up and down position for control fixture block 4, packs up conducting wire convenient for user 11, it is easy to operate.
In use, being first moved to the left plug 5, plug 5 is moved to the left in insertion binding post 6 oscillograph assembling probe, When plug 5 is continued into binding post 6, binding post 6 squeezes limit plate 52, and limit plate 52 is squeezed to form compression elasticity, together When limit plate 52 be squeezed to move down and squeeze second spring 54, second spring 54 forms compression elasticity, and plug 5 continues to move to When so that limit plate 52 being in card slot 61, second spring 54 and limit plate 52 discharge elastic force, and elastic force makes limit plate 52 quick The position for being connected to locking-type plug 5 in card slot 61 is resetted, the plug 5 of setting has the function of quickly connecting, and improves assembling and visits The installation speed of head saves the time, when needing to increase the length of conducting wire 11, first moves down control-rod 42, control-rod 42 to Lower mobile drive kelly 41, which moves down, takes in avoiding hollow groove 36 and squeezes the first spring 37, and the first spring 37 forms compression bullet Power, the upper end of kelly 41 is detached from card hole 22 and reel 3 at this time, then pulls out conducting wire 11 to the external of storage box 2, conducting wire 11 to Outer mobile drive reel 3 rotates clockwise, and reel 3 rotates clockwise so that wind spring 34 forms screen resilience, 3 up time of reel Needle rotation releases storage box 2 so that the both ends of conducting wire 11 pass through through-hole 23 simultaneously, the release control-rod 42 after being of convenient length, and first Spring 37 discharges elastic force and pushes up kelly 41, and the circular hole that kelly 41 moves upwards through the setting of reel 3 sticks into card hole 22, Not when straight line position can not stick into, then pull conducting wire 11 makes the circular hole and card hole 22 being arranged such as kelly 41 and reel 3 Reel 3 drives circular hole rotation so that kelly 41 is sticked into circular hole and stick into card hole 22, such as to pack up, then grasps by above-mentioned steps Make, without pullling conducting wire 11, winds conducting wire 11 quickly on the surface of reel 3, if The reel 3 set has the function of automatic rolling conducting wire 11, can be adjusted according to the needs the length of conducting wire 11, so that conducting wire 11 is not Outer scraping collision at random can be placed on to object, improve the comfort that assembling is popped one's head in.
The foregoing is intended to be a preferred embodiment of the present invention;But scope of protection of the present invention is not limited thereto. Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its It improves design and is subject to equivalent substitution or change, should be covered by the scope of protection of the present invention.

Claims (7)

1. a kind of oscillograph assembling probe, including probing shell (1), it is characterised in that: the left end of the probing shell (1) is fixed It is connected with conducting wire (11), the surface sliding sleeve of the conducting wire (11) is connected to storage box (2), and the storage box (2) is equipped with groove (21), the storage box (2) is equipped with symmetrical card hole (22), and the storage box (2) is equipped with symmetrical through-hole (23), the storage Rotation is socketed with reel (3) in box (2), is equipped with mounting groove (33) in the reel (3), fixed in the mounting groove (33) It is connected with wind spring (34), the upper-end contact of the wind spring (34) is connected with baffle (35), and the side of the baffle (35) is fixed to be connected It is connected to mounting groove (33), the lower end of the card hole (22) is connected with kelly (41), and the lower end of the kelly (41) is fixedly connected with The left end of fixture block (4), the conducting wire (11) is fixedly connected with plug (5), is plugged with binding post (6) on the left of the plug (5), Card slot (61) are equipped in the binding post (6).
2. a kind of oscillograph assembling probe according to claim 1, it is characterised in that: rotation socket in the groove (21) Have reel (3), the surface of the reel (3) is fixedly connected with conducting wire (11) by screw rod (31), in the reel (3) Rotation is socketed with support rod (32), and the lower end of the support rod (32) is fixedly connected with storage box (2).
3. a kind of oscillograph assembling probe according to claim 1, it is characterised in that: the upper end of the baffle (35) is equipped with Avoiding hollow groove (36), the interior contact of the avoiding hollow groove (36) are connected with the first spring (37), are socketed with branch in first spring (37) The upper-end contact of strut (32), first spring (37) is connected with fixture block (4).
4. a kind of oscillograph assembling probe according to claim 1, it is characterised in that: the surface of the plug (5) is fixed Symmetrical two limit plates (52) are connected with, the shape of the limit plate (52) is arc, and the limit plate (52) is elastic conducting Electric material is made, and the surface of the limit plate (52) is connected with card slot (61).
5. a kind of oscillograph assembling probe according to claim 1, it is characterised in that: the surface of the plug (5) is equipped with Symmetrical locating slot (53), contact is connected with second spring (54) in the locating slot (53), the second spring (54) it is upper End in contact is connected with limit plate (52).
6. a kind of oscillograph assembling probe according to claim 1, it is characterised in that: the surface of the plug (5) is fixed It is socketed with limited block (51), the shape of the limited block (51) is circle, and the left contact of the limited block (51), which is connected with, to be connect Terminal (6).
7. a kind of oscillograph assembling probe according to claim 1, it is characterised in that: slide the lower end of the fixture block (4) It is socketed with support rod (32), the upper end of the fixture block (4) is fixedly connected with control-rod (42), and the surface of the control-rod (42) turns It is dynamic to be socketed with storage box (2).
CN201910653188.2A 2019-07-19 2019-07-19 A kind of oscillograph assembling probe Pending CN110221103A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910653188.2A CN110221103A (en) 2019-07-19 2019-07-19 A kind of oscillograph assembling probe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910653188.2A CN110221103A (en) 2019-07-19 2019-07-19 A kind of oscillograph assembling probe

Publications (1)

Publication Number Publication Date
CN110221103A true CN110221103A (en) 2019-09-10

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CN201910653188.2A Pending CN110221103A (en) 2019-07-19 2019-07-19 A kind of oscillograph assembling probe

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110689783A (en) * 2019-11-20 2020-01-14 张庆生 Mathematics teaching aid is used in figure combination
CN111562411A (en) * 2020-06-17 2020-08-21 国网山东省电力公司莱阳市供电公司 Special current loop cross-over connection instrument for electric power operation and inspection
CN112415432A (en) * 2020-09-21 2021-02-26 贵州电网有限责任公司 Quick wire alignment device for secondary signal cable
CN114648846A (en) * 2020-12-21 2022-06-21 大连理工江苏研究院有限公司 Alarm device based on quantum communication and implementation method thereof
CN115008373A (en) * 2022-06-29 2022-09-06 湖北嘉皓精密智能制造有限公司 Fixing device for rotor blade of negative pressure pump

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Publication number Priority date Publication date Assignee Title
CN2404862Y (en) * 1999-11-29 2000-11-08 黄丽娟 Box for automatically winding communication wire
CN102963774A (en) * 2012-11-30 2013-03-13 东莞达电电子有限公司 Wireless winding device and single-pull winder and double-pull winder applying wireless winding device
CN206411148U (en) * 2016-12-31 2017-08-15 广州瑞懋科学仪器有限公司 One kind insulation probe
CN207270349U (en) * 2017-03-14 2018-04-27 姜春暖 A kind of automatic takeup color ultrasound probes rack
CN207662942U (en) * 2017-12-06 2018-07-27 昆山龙腾光电有限公司 Oscillograph assembling probe
CN207697511U (en) * 2017-09-14 2018-08-07 东莞市趣电智能科技有限公司 A kind of rotatable automatic wire winding charger
CN208421040U (en) * 2018-07-23 2019-01-22 上海翮巽机电工程有限公司 A kind of motorcycle oscillograph especial
CN109552945A (en) * 2018-12-20 2019-04-02 杭州虚现科技有限公司 A kind of winder that length is controllable

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2404862Y (en) * 1999-11-29 2000-11-08 黄丽娟 Box for automatically winding communication wire
CN102963774A (en) * 2012-11-30 2013-03-13 东莞达电电子有限公司 Wireless winding device and single-pull winder and double-pull winder applying wireless winding device
CN206411148U (en) * 2016-12-31 2017-08-15 广州瑞懋科学仪器有限公司 One kind insulation probe
CN207270349U (en) * 2017-03-14 2018-04-27 姜春暖 A kind of automatic takeup color ultrasound probes rack
CN207697511U (en) * 2017-09-14 2018-08-07 东莞市趣电智能科技有限公司 A kind of rotatable automatic wire winding charger
CN207662942U (en) * 2017-12-06 2018-07-27 昆山龙腾光电有限公司 Oscillograph assembling probe
CN208421040U (en) * 2018-07-23 2019-01-22 上海翮巽机电工程有限公司 A kind of motorcycle oscillograph especial
CN109552945A (en) * 2018-12-20 2019-04-02 杭州虚现科技有限公司 A kind of winder that length is controllable

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110689783A (en) * 2019-11-20 2020-01-14 张庆生 Mathematics teaching aid is used in figure combination
CN111562411A (en) * 2020-06-17 2020-08-21 国网山东省电力公司莱阳市供电公司 Special current loop cross-over connection instrument for electric power operation and inspection
CN111562411B (en) * 2020-06-17 2022-07-22 国网山东省电力公司莱阳市供电公司 Special current loop cross-over connection instrument for electric power operation and inspection
CN112415432A (en) * 2020-09-21 2021-02-26 贵州电网有限责任公司 Quick wire alignment device for secondary signal cable
CN114648846A (en) * 2020-12-21 2022-06-21 大连理工江苏研究院有限公司 Alarm device based on quantum communication and implementation method thereof
CN115008373A (en) * 2022-06-29 2022-09-06 湖北嘉皓精密智能制造有限公司 Fixing device for rotor blade of negative pressure pump

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Application publication date: 20190910