CN112670938A - Electric engineering automation is with exposing spool protection device - Google Patents

Electric engineering automation is with exposing spool protection device Download PDF

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Publication number
CN112670938A
CN112670938A CN202110030376.7A CN202110030376A CN112670938A CN 112670938 A CN112670938 A CN 112670938A CN 202110030376 A CN202110030376 A CN 202110030376A CN 112670938 A CN112670938 A CN 112670938A
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China
Prior art keywords
elastic
groove
spacing
bolt
main body
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CN202110030376.7A
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Chinese (zh)
Inventor
郑婉婷
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Individual
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Individual
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Priority to CN202110030376.7A priority Critical patent/CN112670938A/en
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Abstract

The invention discloses an exposed wire tube protection device for electrical engineering automation, which comprises a protection main body, wherein the middle of the protection main body is connected with a wire tube cover plate through a shaft body, a wire tube storage cavity is arranged at the bottom of the wire tube cover plate, a first avoidance groove is formed in one side of the wire tube cover plate, a first elastic bolt is arranged in the first avoidance groove, a second avoidance groove and an inserting block groove are respectively formed in the two ends of the right side of the protection main body, a second elastic bolt is arranged in the second avoidance groove, a third avoidance groove is respectively formed in the two ends of the left side of the protection main body, an elastic inserting block is arranged in the third avoidance groove, and the front end and the rear end of the protection main body are respectively connected. The invention relates to an exposed wire tube protection device for electrical engineering automation, which is used for temporarily hiding and protecting a wire tube in electrical equipment, can avoid electric shock caused by treading of pedestrians, can protect the wire tube of the electrical equipment, is convenient to carry, can be installed or detached without the assistance of other tools, and has the advantages of simple operation and high use flexibility.

Description

Electric engineering automation is with exposing spool protection device
Technical Field
The invention relates to the field of electrical engineering, in particular to an exposed wire tube protection device for electrical engineering automation.
Background
Electrical engineering is a core and key discipline in the modern scientific and technological field. Conventional electrical engineering is defined as the sum of related disciplines used to create electrical and electronic systems. It is the great progress of electronic technology that has promoted the information age based on computer networks and will change the life and work patterns of human beings, etc.
In electrical engineering, electrical equipment is the most common, and the electrical equipment is a general term for equipment such as generators, transformers, power lines, circuit breakers and the like in an electric power system. The electric equipment consists of a power supply and electric equipment. The power supply comprises a storage battery, a generator and a regulator thereof. The electric equipment includes a starting system of the engine, lighting, signals, meters, and the like of the automobile, and the forced ignition engine also includes an ignition system of the engine.
Electrical equipment such as current emergency such as road construction often can be used, like generator etc. and electrical equipment can lay the spool when using, and the spool exposes in the outside, and the pedestrian tramples easily when passing by and probably causes the electric shock, and the spool is trampled for a long time, also can influence its life. In order to solve the existing problems, the invention designs an exposed wire tube protection device for electrical engineering automation.
Disclosure of Invention
The invention aims to solve the defects that electric equipment such as a generator and the like is often used in emergency situations such as road construction at present, a wire pipe is laid when the electric equipment is used, the wire pipe is exposed outside, electric shock is likely to be caused by treading when pedestrians pass by the wire pipe, the service life of the wire pipe is affected by treading the wire pipe for a long time, and the like, and provides an exposed wire pipe protection device for the automation of the electric engineering.
In order to achieve the purpose, the invention provides the following technical scheme:
an exposed wire pipe protection device for automation of electrical engineering comprises a protection main body, wherein a wire pipe cover plate is movably connected in the middle of the protection main body through a shaft body, a handle groove is arranged on the upper surface of the wire pipe cover plate, a first bolt hole is formed in the side surface of the protection main body, a wire pipe storage cavity is formed in the bottom of the wire pipe cover plate, a first avoidance groove is formed in one side of the wire pipe cover plate, a first elastic bolt is arranged in the first avoidance groove, a second avoidance groove and an insertion block groove are respectively formed in the two ends of the right side of the protection main body, a second elastic bolt is arranged in the second avoidance groove, a third avoidance groove is respectively formed in the two ends of the left side of the protection main body, an elastic insertion block is arranged in the third avoidance groove, a second bolt hole is formed in the elastic insertion block, and the front end and the rear end of the protection main, the bottom of the protection main body is provided with a drainage channel.
According to the length of pipeline, select the protection main part of suitable quantity to in proper order with the butt joint of protection main part, wherein, face mutually and realize the butt joint through the elasticity inserted block between the two protection main parts, treat that the butt joint of protection main part is accomplished the back, open the spool apron, place the spool in spool storage intracavity, if the number of turns of spool is more, should separate the spool through the baffle, it can to close the spool apron at last.
Preferably, the position of the first elastic bolt corresponds to the position of the first bolt hole, and the conduit cover plate fixes the first elastic bolt under the combined action of the first bolt hole and the first bolt hole; wherein, clearance fit is formed between the first elastic bolt and the first bolt hole. Spool apron mainly used spool's protection, spool apron closure back, through first elasticity bolt and the cooperation of first bolt hole, can realize the fixed of spool apron fast, its easy operation need not to use other instruments to assist.
Preferably, the inside of first elasticity bolt is fixed with first spacing muscle, and first spacing muscle is spacing in the first spacing intracavity of first portion of dodging the inslot, is fixed with first spring post on the first spacing muscle, and first spacing intracavity is fixed with the second spring post, is provided with the spring in the first spacing intracavity, and the both ends of its spring overlap respectively on first spring post and second spring post. First elasticity bolt can drive first elasticity bolt automatic and first bolt hole cooperation and realize fixing under the elastic action of its inside spring, and its easy operation is fixed effectual, uses the flexibility high.
Preferably, the position of the elastic insertion block corresponds to the position of the insertion block groove, and two adjacent protection main bodies can be butted through the elastic insertion block; wherein, clearance fit is formed between the elastic insertion block and the insertion block groove. The elastic insertion block is mainly used for butt joint between two adjacent protection main bodies.
Preferably, after the elastic insertion block is in clearance fit with the insertion block groove, the elastic insertion block limits and fixes the elastic insertion block under the combined action of the second elastic bolt and the second bolt hole; and the second elastic bolt is in clearance fit with the second bolt hole. Elasticity inserted block cooperates behind the inserted block groove, through second elasticity bolt and the cooperation of second bolt hole, can realize the fixed of elasticity inserted block fast, and its easy operation need not to use other instruments to assist.
Preferably, the inside of second elasticity bolt is fixed with the spacing muscle of second, and the spacing muscle of second is spacing dodge the spacing intracavity of inslot portion in the second, is fixed with first spring post on the spacing muscle of second, and the spacing intracavity of second is fixed with second spring post, is provided with the spring in the spacing intracavity of second, and the both ends of its spring overlap respectively on first spring post and second spring post. The second elastic bolt can drive the second elastic bolt to automatically match with the second bolt hole to realize fixation under the elastic action of the inner spring of the second elastic bolt, and the fixing device is simple in operation, good in fixing effect and high in use flexibility.
Preferably, the inside of elasticity inserted block is fixed with first spacing muscle, and first spacing muscle is spacing in the third spacing intracavity of the inslot portion is dodged to the third, is fixed with first spring post on the spacing muscle of third, and the spacing intracavity of third is fixed with the second spring post, is provided with the spring in the spacing intracavity of third, and wherein the both ends of spring overlap respectively on first spring post and second spring post. The elastic insertion block can drive the elastic insertion block to be completely hidden in the third avoiding groove under the elastic action of the spring inside the elastic insertion block, the elastic insertion block is prevented from interfering the use of the protection main body, the elastic insertion block can be pulled out outwards when in use, the operation is simple, and the use flexibility is high.
Preferably, a plurality of partition plates are arranged in the spool storage cavity at intervals, a plurality of drain holes are formed between two adjacent partition plates, and all the drain holes are communicated with the drain grooves. In rainy days, rainwater enters the spool from the gap of the spool cover plate and stores the intracavity, and can finally flow out from the drainage groove through the drainage hole after rain, so that the spool is prevented from being soaked by the rainwater for a long time, and potential safety hazards are prevented.
Preferably, the partition board is made of an insulating material, such as a PC board. The spool that faces passes through the baffle interval, when the unexpected electric leakage of spool appearance, can effectively be with its separation through the baffle, prevents to influence other spools.
Preferably, the four corners of the protection main body are respectively fixedly bonded with the non-slip mat. The friction force of the protective main body contacting with the ground can be effectively increased through the anti-slip mat, and the protective main body is more stable and reliable when being laid on the ground for use.
Compared with the prior art, the invention has the beneficial effects that: the invention relates to an exposed wire tube protection device for electrical engineering automation, which is used for temporarily hiding and protecting a wire tube in electrical equipment, can avoid electric shock caused by treading of pedestrians, can protect the wire tube of the electrical equipment, is convenient to carry, can be installed or detached without the assistance of other tools, and has the advantages of simple operation and high use flexibility.
Drawings
Fig. 1 is a schematic front view of the conduit cover plate of the present invention.
Fig. 2 is a right-view structural schematic diagram of the conduit cover plate of the present invention when closed.
Fig. 3 is a partially enlarged view of a portion a in fig. 2.
Fig. 4 is a left side view structural diagram of the conduit cover plate of the present invention when closed.
Fig. 5 is a partially enlarged view of B in fig. 4.
Fig. 6 is a schematic top view of the conduit cover plate of the present invention.
Fig. 7 is a partial enlarged view at C in fig. 6.
Fig. 8 is a partial enlarged view of fig. 6 at D.
Fig. 9 is a schematic view of the internal structure of fig. 8.
Fig. 10 is a partial enlarged view at E in fig. 6.
Fig. 11 is a partial enlarged view at F in fig. 6.
Fig. 12 is a schematic bottom view of the conduit cover of the present invention.
FIG. 13 is a schematic top view of the conduit cover of the present invention when opened.
Fig. 14 is a partial enlarged view at G in fig. 13.
FIG. 15 is a schematic top view of the butted substrate.
Fig. 16 is a partial enlarged view at H in fig. 15.
Fig. 17 is a schematic view of the internal structure of fig. 16.
Fig. 18 is a partial enlarged view at I in fig. 17.
In the figure: 1-a protection main body, 2-a shaft body, 3-a spool cover plate, 4-a handle groove, 5-a first limiting hole, 6-a spool storage cavity, 7-a partition plate, 8-a drain hole, 9-a first avoidance groove, 10-a first elastic bolt, 11-a second avoidance groove, 12-a plug groove, 13-a second elastic bolt, 14-a third avoidance groove, 15-an elastic plug, 16-a second bolt hole, 17-a side slope seat, 18-a drain groove, 19-an anti-skid pad, 20-a first limiting rib, 21-a first limiting cavity, 22-a first spring column, 23-a second spring column, 24-a spring, 25-a second limiting rib, 26-a second limiting cavity, 27-a third limiting rib and 28-a third limiting cavity.
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.
Referring to fig. 1-18, the present invention provides a technical solution:
an exposed wire tube protection device for automation of electrical engineering comprises a protection main body 1, wherein a wire tube cover plate 3 is movably connected in the middle of the protection main body 1 through a shaft body 2, a handle groove 4 is arranged on the upper surface of the wire tube cover plate 3, a first bolt hole 5 is arranged on the side surface of the protection main body 1, a wire tube storage cavity 6 is arranged at the bottom of the wire tube cover plate 3, a first avoidance groove 9 is arranged on one side of the wire tube cover plate 3, a first elastic bolt 10 is arranged in the first avoidance groove 9, a second avoidance groove 11 and a plug groove 12 are respectively arranged at the two ends of the right side of the protection main body 1, a second elastic bolt 13 is arranged in the second avoidance groove 11, a third avoidance groove 14 is respectively arranged at the two ends of the left side of the protection main body 1, an elastic plug block 15 is arranged in the third avoidance groove 14, and a second bolt hole 16 is arranged on the elastic plug block 15, the front end and the rear end of the protection main body 1 are respectively connected with a side slope seat 17, and the bottom of the protection main body 1 is provided with a drainage groove 18.
The position of the first elastic bolt 10 corresponds to the position of the first bolt hole 5, and the spool cover plate 3 fixes the first elastic bolt 10 and the first bolt hole 5 under the combined action; wherein, clearance fit is formed between the first elastic bolt 10 and the first bolt hole 5. Spool apron 3 mainly used spool's protection, spool apron 3 closed back, through first elastic bolt 10 and the cooperation of first bolt hole 5, can realize spool apron 3's fixed fast, its easy operation need not to use other instruments to assist.
The inside of first elasticity bolt 10 is fixed with first spacing muscle 20, and first spacing muscle 20 is spacing in first spacing intracavity 21 of dodging the inside groove 9, is fixed with first spring post 22 on the first spacing muscle 20, and first spacing intracavity 21 internal fixation has second spring post 23, is provided with spring 24 in the first spacing intracavity 21, and the both ends of its spring 24 overlap respectively on first spring post 22 and second spring post 23. The first elastic bolt 10 can drive the first elastic bolt 10 to automatically match with the first bolt hole 5 to realize fixation under the elastic action of the inner spring 24 of the first elastic bolt, and the fixing device is simple to operate, good in fixing effect and high in use flexibility.
The position of the elastic insertion block 15 corresponds to the position of the insertion block groove 12, and two adjacent protection main bodies 1 can be butted through the elastic insertion block 15; wherein, clearance fit is formed between the elastic insert 15 and the insert groove 12. The elastic insert 15 is mainly used for butt joint between two adjacent protection bodies 1.
After the elastic insertion block 15 is in clearance fit with the insertion block groove 12, the elastic insertion block 15 limits and fixes the elastic insertion block under the combined action of the second elastic bolt 13 and the second bolt hole 16; wherein, clearance fit is formed between the second elastic bolt 13 and the second bolt hole 16. After the elastic insertion block 15 is matched with the insertion block groove 12, the elastic insertion block 15 can be quickly fixed through the matching of the second elastic bolt 13 and the second bolt hole 16, the operation is simple, and other tools are not needed for assistance.
The inside of second elastic bolt 13 is fixed with the spacing muscle 25 of second, and the spacing muscle 25 of second is spacing in the spacing intracavity 26 of second of the inside second of groove 11 is dodged to the second, is fixed with first spring post 22 on the spacing muscle 25 of second, and the spacing intracavity 26 of second is fixed with second spring post 23, is provided with spring 24 in the spacing intracavity 26 of second, and the both ends of its spring 24 overlap respectively on first spring post 22 and second spring post 23. The second elastic bolt 13 can drive the second elastic bolt 13 to automatically match with the second bolt hole 16 to realize fixation under the elastic action of the inner spring 24 of the second elastic bolt, and the fixing device is simple to operate, good in fixing effect and high in use flexibility.
The inside of elasticity inserted block 15 is fixed with first spacing muscle 20, and first spacing muscle 20 is spacing in the third dodges the spacing intracavity of the third of groove 14 inside 27, is fixed with first spring post 22 on the spacing muscle 27 of third, and the spacing intracavity of third 27 is fixed with second spring post 23, is provided with spring 24 in the spacing intracavity of third 27, and wherein spring 24's both ends overlap respectively on first spring post 22 and second spring post 23. The elastic insertion block 15 can drive the elastic insertion block 15 to be completely hidden in the third avoiding groove 14 under the elastic action of the internal spring 24 of the elastic insertion block 15, the elastic insertion block 15 is prevented from interfering the use of the protection main body 1, the elastic insertion block 15 can be pulled out when in use, and the elastic insertion block is simple to operate and high in use flexibility.
A plurality of partition plates 7 are arranged in the spool storage cavity 6 at intervals, a plurality of drain holes 8 are arranged between two adjacent partition plates 7, and all the drain holes 8 are communicated with a drain groove 18. In rainy day, the rainwater gets into behind the spool storage chamber 6 from the gap of spool apron 3, can finally flow out from water drainage tank 18 through wash port 8 after the rain, avoids the rainwater to soak the spool for a long time, prevents to appear the potential safety hazard.
The partition 7 is made of an insulating material such as a PC board. The adjacent spool passes through 7 intervals of baffle, when the unexpected electric leakage of spool appearance, can effectively be with its separation through baffle 7, prevents to influence other spools.
And anti-skid pads 19 are respectively bonded and fixed at the four corners of the protection main body 1. The friction force of the protection main body 1 contacting with the ground can be effectively increased through the anti-slip mat 19, and the protection main body 1 is more stable and reliable when being laid on the ground for use.
The working principle of the invention is as follows:
first, an appropriate number of the protection bodies 1 are selected according to the length of the pipeline, and the protection bodies 1 are butted in turn. When in butt joint, the elastic insertion block 15 of one protection main body 1 is matched in the insertion block groove 12 of the other protection main body 1, and the elastic insertion block 15 is under the combined action of the second elastic bolt 13 and the second bolt hole 16, so that the butt joint of two adjacent protection main bodies 1 is realized.
Then, open spool apron 3, place the spool in spool storage chamber 6, if the number of turns of spool is more, should separate the spool through baffle 7, close spool apron 3 at last, under the combined action of first elasticity bolt 10 and first bolt hole 5 to fix spool apron 3.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (10)

1. The utility model provides an automatic with exposing spool protection device of electrical engineering, includes protection main part (1), its characterized in that: the middle of the protection main body (1) is movably connected with a wire tube cover plate (3) through a shaft body (2), a handle groove (4) is arranged on the upper surface of the wire tube cover plate (3), a first bolt hole (5) is arranged on the side surface of the protection main body (1), a wire tube storage cavity (6) is arranged at the bottom of the wire tube cover plate (3), a first avoidance groove (9) is arranged on one side of the wire tube cover plate (3), a first elastic bolt (10) is arranged in the first avoidance groove (9), a second avoidance groove (11) and an insert groove (12) are respectively arranged at the two ends of the right side of the protection main body (1), a second elastic bolt (13) is arranged in the second avoidance groove (11), third avoidance grooves (14) are respectively arranged at the two ends of the left side of the protection main body (1), and elastic inserts (15) are arranged in the third avoidance grooves (14), the elastic insertion block (15) is provided with a second insertion pin hole (16), the front end and the rear end of the protection main body (1) are respectively connected with a side slope seat (17), and the bottom of the protection main body (1) is provided with a drainage groove (18).
2. The exposed conduit protection device for automation of electrical engineering according to claim 1, wherein: the position of the first elastic bolt (10) corresponds to the position of the first bolt hole (5), and the spool cover plate (3) fixes the first elastic bolt (10) and the first bolt hole (5) under the combined action of the first elastic bolt; wherein, clearance fit is adopted between the first elastic bolt (10) and the first bolt hole (5).
3. The exposed conduit protection device for automation of electrical engineering according to claim 1, wherein: the inside of first elasticity bolt (10) is fixed with first spacing muscle (20), and first spacing muscle (20) are spacing in first spacing chamber (21) of dodging groove (9) inside, are fixed with first spring post (22) on first spacing muscle (20), and first spacing chamber (21) internal fixation has second spring post (23), is provided with spring (24) in first spacing chamber (21), and the both ends of its spring (24) overlap respectively on first spring post (22) and second spring post (23).
4. The exposed conduit protection device for automation of electrical engineering according to claim 1, wherein: the position of the elastic insertion block (15) corresponds to the position of the insertion block groove (12), and two adjacent protection main bodies (1) can be butted through the elastic insertion block (15); wherein, clearance fit is formed between the elastic insert block (15) and the insert block groove (12).
5. The exposed conduit protection device for automation of electrical engineering according to claim 4, wherein: after the elastic inserting block (15) is in clearance fit with the inserting block groove (12), the elastic inserting block (15) limits and fixes the elastic inserting block under the combined action of the second elastic bolt (13) and the second bolt hole (16); wherein, clearance fit is formed between the second elastic bolt (13) and the second bolt hole (16).
6. The exposed conduit protection device for automation of electrical engineering according to claim 1, wherein: the inside of second elasticity bolt (13) is fixed with spacing muscle of second (25), and spacing muscle of second (25) is spacing in the second dodges the spacing chamber of second (26) of groove (11) inside, is fixed with first spring post (22) on the spacing muscle of second (25), and spacing chamber of second (26) internal fixation has second spring post (23), is provided with spring (24) in the spacing chamber of second (26), and the both ends of its spring (24) overlap respectively on first spring post (22) and second spring post (23).
7. The exposed conduit protection device for automation of electrical engineering according to claim 1, wherein: the inside of elasticity inserted block (15) is fixed with first spacing muscle (20), and first spacing muscle (20) are spacing in the third dodges spacing chamber (27) of the inside third of groove (14) in, are fixed with first spring post (22) on the spacing muscle (27) of third, and the spacing chamber of third (27) internal fixation has second spring post (23), is provided with spring (24) in the spacing chamber of third (27), and wherein the both ends of spring (24) overlap respectively on first spring post (22) and second spring post (23).
8. The exposed conduit protection device for automation of electrical engineering according to claim 1, wherein: a plurality of partition plates (7) are arranged in the spool storage cavity (6) at intervals, a plurality of drain holes (8) are formed between every two adjacent partition plates (7), and all the drain holes (8) are communicated with a drain groove (18).
9. The exposed conduit protection device for automation of electrical engineering according to claim 8, wherein: the partition plate (7) is made of an insulating material, such as a PC board.
10. The exposed conduit protection device for automation of electrical engineering according to claim 1, wherein: and anti-skid pads (19) are respectively bonded and fixed at the four corners of the protection main body (1).
CN202110030376.7A 2021-02-07 2021-02-07 Electric engineering automation is with exposing spool protection device Pending CN112670938A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110030376.7A CN112670938A (en) 2021-02-07 2021-02-07 Electric engineering automation is with exposing spool protection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110030376.7A CN112670938A (en) 2021-02-07 2021-02-07 Electric engineering automation is with exposing spool protection device

Publications (1)

Publication Number Publication Date
CN112670938A true CN112670938A (en) 2021-04-16

Family

ID=75414140

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110030376.7A Pending CN112670938A (en) 2021-02-07 2021-02-07 Electric engineering automation is with exposing spool protection device

Country Status (1)

Country Link
CN (1) CN112670938A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN207082814U (en) * 2017-06-23 2018-03-09 国网河南鄢陵县供电公司 A kind of open cable protector for road construction
CN207504482U (en) * 2017-09-21 2018-06-15 杭州金泰塑业有限公司 MPP separation type electrical cable protection pipes
CN108631225A (en) * 2018-03-28 2018-10-09 芜湖泰庆电子科技有限公司 A kind of motor-car cable protecting device
CN108718063A (en) * 2018-07-19 2018-10-30 扬中市祥龙电器有限公司 A kind of easy-to-dismount cable testing bridge
CN210838901U (en) * 2019-12-02 2020-06-23 苏州标新精密机械有限公司 Wire pressing plate for cable
CN212392509U (en) * 2020-07-07 2021-01-22 长春职业技术学院 Switch board convenient to overhaul

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN207082814U (en) * 2017-06-23 2018-03-09 国网河南鄢陵县供电公司 A kind of open cable protector for road construction
CN207504482U (en) * 2017-09-21 2018-06-15 杭州金泰塑业有限公司 MPP separation type electrical cable protection pipes
CN108631225A (en) * 2018-03-28 2018-10-09 芜湖泰庆电子科技有限公司 A kind of motor-car cable protecting device
CN108718063A (en) * 2018-07-19 2018-10-30 扬中市祥龙电器有限公司 A kind of easy-to-dismount cable testing bridge
CN210838901U (en) * 2019-12-02 2020-06-23 苏州标新精密机械有限公司 Wire pressing plate for cable
CN212392509U (en) * 2020-07-07 2021-01-22 长春职业技术学院 Switch board convenient to overhaul

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Application publication date: 20210416

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