CN106207514B - A kind of electric power grounding device - Google Patents
A kind of electric power grounding device Download PDFInfo
- Publication number
- CN106207514B CN106207514B CN201610786367.XA CN201610786367A CN106207514B CN 106207514 B CN106207514 B CN 106207514B CN 201610786367 A CN201610786367 A CN 201610786367A CN 106207514 B CN106207514 B CN 106207514B
- Authority
- CN
- China
- Prior art keywords
- rod
- swivel nut
- transmission shaft
- electric power
- clump weight
- 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.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/66—Connections with the terrestrial mass, e.g. earth plate, earth pin
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Manufacturing Of Electrical Connectors (AREA)
Abstract
The invention discloses a kind of electric power grounding devices, pedestal including being equipped with walking mechanism, transmission shaft, ratchet, the supporting frame being set on the base and the pawl being mounted on supporting frame, the transmission shaft is connect by cover for seat with supporting frame, the ratchet is flexibly connected with transmission shaft, the transmission shaft is equipped with position limiting structure and friction component, one end of the transmission shaft is equipped with whim, the transverse arm of support frame as described above body be equipped with for restrict across fixed pulley, rope free end on the whim is equipped with clump weight, the pedestal side is equipped with the earthing rod guide sleeve being movably connected with the base, the device can fast implement the accurate installation of earthing rod, installation time is short, installation effectiveness is high, and it is easy to operate, securely and reliably.
Description
Technical field
The present invention relates to power equipment grounding technology fields, and in particular to a kind of electric power grounding device.
Background technique
Electric power transmission line and relevant device many places are easy to be struck by lightning in outdoor, the line tripping as caused by lightning stroke
The case where frequent occurrence.It in order to anti-lightning strike, needs to give transmission line of electricity installation earthing or grounding means, electric current that lightning stroke generates is directed into greatly
Ground avoids conducting wire or transmission facility by the damage of lightning voltage.Earthing or grounding means needs reliable ground connection, generallys use metallic
The ground stud on ground.Ground stud is that but since ground stud capacity is pulled out, often there is ground stud quilt by external force hammer driven ground
The case where robber, the operation bring insecurity factor of line route, and also stolen ground stud is needed by service personnel's periodic inspection
And be reinstalled, make maintenance cost height.
For this purpose, the patent of invention of Publication No. 201510743884.4 proposes a kind of electric power grounding device, including ontology,
The lower end of the ontology is provided with insertion end, and more than four lock banking stops are provided on the outer ring of the insertion end, described to insert
Enter and be provided with the through slot opposite with the lock banking stop on the outer ring at end, the lock banking stop is provided with close to that side of the through slot
Guide pin, the ontology are internally provided with support plate, threaded hole are provided in the plate face of the support plate, in the threaded hole
It is inside combined with threaded rod, the lower end of the threaded rod is combined with the guide pad of taper, and end, institute are provided at the top of the ontology
The side for stating ontology is provided with first end, and conducting wire is combined between the end and the first end, and the conducting wire extends
Attracting thunder needle is combined on that one end outside to the end;The present apparatus when in use, can be formed preferably between ground
Non-removable connection avoids stolen phenomenon from occurring.For another example CN201510743906.7 discloses a kind of electric power grounding device, packet
Ontology is included, the lower end of the ontology is provided with insertion end, more than four lock banking stops are provided on the outer ring of the insertion end,
The through slot opposite with the lock banking stop is provided on the outer ring of the insertion end, the lock banking stop is close to that side of the through slot
It is provided with guide pin, the ontology is internally provided with support plate, threaded hole is provided in the plate face of the support plate, described
Threaded rod is combined in threaded hole, the lower end of the threaded rod is combined with the guide pad of taper, is provided at the top of the ontology
End, the side of the ontology are provided with first end, and conducting wire is combined between the end and the first end, described to lead
Line extends on that one end outside the end and is combined with attracting thunder needle.In use, inconvenient to carry, installation earthing rod still needs to consume
Take a large amount of strength, leverages the installation effectiveness of equipment.
Summary of the invention
Problem to be solved by this invention is to overcome the above-mentioned deficiency of the prior art, provides a kind of electric power grounding device, should
Device can fast implement the accurate installation of earthing rod, and installation time is short, and installation effectiveness is high, and easy to operate, safely may be used
It leans on.
In order to solve the above technical problems, the technical solution adopted by the present invention is that:A kind of electric power grounding device, including be equipped with
Pedestal, transmission shaft, ratchet, the supporting frame being set on the base and the pawl being mounted on supporting frame of walking mechanism, institute
It states transmission shaft to connect by cover for seat with supporting frame, the ratchet is flexibly connected with transmission shaft, and the transmission shaft is equipped with limit
Structure and friction component, one end of the transmission shaft are equipped with whim, the transverse arm of support frame as described above body be equipped with for rope across
Fixed pulley, the rope free end on the whim is equipped with clump weight, and the pedestal side, which is equipped with, to be movably connected with the base
Earthing rod guide sleeve, the pedestal are equipped with righting guiding mechanism.
The righting guiding mechanism includes the telescopic rod being set on the base, is sleeved on holding out against spring and set on telescopic rod
Set the righting body being sleeved on earthing rod in telescopic rod free end.
The earthing rod is equipped with blind hole, and the earthing rod is equipped with the anti-theft hole that is connected to blind hole, in the anti-theft hole
The drill rod that driving block is displaced outwardly is equipped with equipped with block, in the blind hole.
The longitudal section of the drill rod is triangle.
The friction component includes being sleeved on the actuating swivel nut being threadedly coupled therewith on transmission shaft, being arranged in transmission shaft one end
The clamp nut for preventing actuating swivel nut from exiting and the friction damper being sleeved on transmission shaft.
Groove is arranged in the clamp nut side.
The walking mechanism is the Universal self-locking idler wheel being arranged under pedestal.
Its is composed of the following components by weight for the friction damper:5~10 parts of active carbon;Brown Alundum cashew nut shell oil
8~12 parts of phenol-formaldehyde resin modified;15~25 parts of diamond particles;15~25 parts of acrylonitrile-butadiene rubber powder;Polypropylene fibre 10~15
Part;6~10 parts of boron nitride.
A kind of application method of electric power grounding device, includes the following steps:
1)Pedestal is moved to earthing rod position to be installed, unclamps earthing rod fixing bolt, earthing rod and ground face contact;
2)Rotate clockwise actuating swivel nut to sling clump weight, rotate counterclockwise actuating swivel nut, at this time clump weight quickly to
Lower movement, is pounded on earthing rod;Actuating swivel nut is rotated clockwise again to sling clump weight, rotates counterclockwise actuating swivel nut, this
When clump weight quickly move down, pound on earthing rod, pound until by earthing rod into ground again;
3)Drill rod is put into blind hole at this time, actuating swivel nut is rotated clockwise and slings clump weight, rotate counterclockwise actuating spiral shell
Set, clump weight quickly moves down at this time, pounds on drill rod;It rotates clockwise actuating swivel nut again to sling clump weight, the inverse time
Needle rotates actuating swivel nut, and clump weight quickly moves down at this time, pounds on drill rod again, blind into earthing rod until pounding drill rod
Hole;Clump weight is removed, the hook for end of restricting is hung on drill rod, actuating swivel nut is rotated clockwise, drill rod is pulled out.
The beneficial effects of the invention are as follows:Pedestal need to be only moved to earthing rod position to be installed by the present invention, unclamp earthing rod
Fixing bolt, earthing rod and ground face contact;It rotates clockwise actuating swivel nut to sling clump weight, rotates counterclockwise actuating swivel nut 90
Degree, clump weight quickly moves down at this time, pounds on earthing rod;Actuating swivel nut is rotated clockwise again to sling clump weight, it is inverse
Hour hands rotate 90 degree of actuating swivel nut, clump weight quickly moves down at this time, pound on earthing rod again, until by earthing rod pound into
Ground;Drill rod is put into blind hole at this time, actuating swivel nut is rotated clockwise and slings clump weight, rotate counterclockwise actuating swivel nut 90
Degree, clump weight quickly moves down at this time, pounds on drill rod;It rotates clockwise actuating swivel nut again to sling clump weight, the inverse time
Needle rotates 90 degree of actuating swivel nut, and clump weight quickly moves down at this time, pounds on drill rod again, pounds until by drill rod into earthing rod
Blind hole;Clump weight is removed, the hook for end of restricting is hung on drill rod, actuating swivel nut is rotated clockwise, drill rod is pulled out.The dress
The accurate installation that can fast implement earthing rod is set, installation time is short, and installation effectiveness is high, and easy to operate, securely and reliably.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings:
Fig. 1 is structural schematic diagram of the invention.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and examples.
Embodiment one
As shown in Figure 1, a kind of electric power grounding device, including being equipped with the pedestal 19 of walking mechanism, transmission shaft 1, ratchet 6, setting
The pawl 8 setting the supporting frame 2 on pedestal and being mounted on supporting frame, pawl 8 can be mounted on support by shaft 10
On frame body 2, the transmission shaft is connect by cover for seat 3 with supporting frame 2, and the ratchet is flexibly connected with transmission shaft, and transmission shaft 1 is logical
Cross thrust bearing 11 and installed with bearing block and is connect, transmission shaft 1 is equipped with position limiting structure 1-1 and friction component, when transmission shaft to the right
Position-limiting action is played when mobile, wherein the load side of the cover for seat 3 is arranged in the position limiting structure 1-1, sets on the transmission shaft
There are position limiting structure and friction component, one end of the transmission shaft is equipped with whim, and the transverse arm of support frame as described above body, which is equipped with, to be supplied
Restrict across fixed pulley 23,14 free end of rope on the whim 12 is equipped with clump weight 15, the pedestal side be equipped with
The earthing rod guide sleeve that pedestal is flexibly connected, the earthing rod are equipped with blind hole, and the pedestal is equipped with righting guiding mechanism.
The righting guiding mechanism includes the telescopic rod 27 being set on the base, is sleeved on telescopic rod and holds out against spring 26
With the righting body 25 for telescopic rod free end is arranged in being sleeved on earthing rod.Righting body, which is covered, to be played guiding on earthing rod and helps
Positive interaction, movable cage plate are pressed in real time on righting body, prevent clump weight from first pounding righting body.
The earthing rod is equipped with the anti-theft hole 20 being connected to blind hole, and block 22 is equipped in the anti-theft hole 20, described blind
The drill rod that driving block is displaced outwardly is equipped in hole.
The friction component includes being sleeved on the actuating swivel nut 5 being threadedly coupled therewith on transmission shaft, being arranged in transmission shaft one
Hold the clamp nut 7 for preventing actuating swivel nut from exiting and the friction damper 4 being sleeved on transmission shaft.
Groove is arranged in the clamp nut side.
The walking mechanism is the Universal self-locking idler wheel being arranged under pedestal.
Earthing rod guide sleeve is equipped with earthing rod fixing bolt, and earthing rod guide sleeve is stuck on pedestal, installs to earthing rod
Behind ground, guide sleeve can be removed.
A kind of application method of electric power grounding device, includes the following steps:
1)Pedestal is moved to earthing rod position to be installed, unclamps earthing rod fixing bolt 24, earthing rod and ground face contact;
2)Rotate clockwise actuating swivel nut to sling clump weight, rotate counterclockwise actuating swivel nut, at this time clump weight quickly to
Lower movement, is pounded on earthing rod;Actuating swivel nut is rotated clockwise again to sling clump weight, rotates counterclockwise actuating swivel nut, this
When clump weight quickly move down, pound on earthing rod, pound until by earthing rod into ground again;
3)Drill rod is put into blind hole 21 at this time, actuating swivel nut is rotated clockwise and slings clump weight, rotate counterclockwise actuating
Swivel nut, clump weight quickly moves down at this time, pounds on drill rod;Actuating swivel nut is rotated clockwise again to sling clump weight, it is inverse
Hour hands rotate actuating swivel nut, and clump weight quickly moves down at this time, pounds on drill rod again, blind into earthing rod until pounding drill rod
Hole;Clump weight is removed, the hook 13 for end of restricting is hung on drill rod 16, actuating swivel nut is rotated clockwise, drill rod is pulled out.
Embodiment two
The earthing rod is equipped with drill rod guide sleeve 17, prevents from pounding partially, more importantly clump weight can be prevented to land,
Injure other people by a crashing object.Earthing rod side is equipped with movable cage plate 18, prevents clump weight to land, injures other people by a crashing object.
Embodiment three
The longitudal section of the drill rod is triangle, convenient for ejecting block.
Example IV
The actuating swivel nut is equipped with rocker arm 9, rotates more laborsaving.
Embodiment five and the difference of example IV are:Its is composed of the following components by weight for the friction damper:
5 parts of active carbon;8 parts of Brown Alundum cashew nut oil modified alkyd resin;15 parts of diamond particles;15 parts of acrylonitrile-butadiene rubber powder;Polypropylene
10 parts of fiber;6 parts of boron nitride.
Embodiment six and the difference of example IV are:Its is composed of the following components by weight for the friction damper:
10 parts of active carbon;12 parts of Brown Alundum cashew nut oil modified alkyd resin;25 parts of diamond particles;25 parts of acrylonitrile-butadiene rubber powder;Poly- third
15 parts of alkene fiber;10 parts of boron nitride.
Embodiment seven and the difference of example IV are:Its is composed of the following components by weight for the friction damper:
8 parts of active carbon;10 parts of Brown Alundum cashew nut oil modified alkyd resin;20 parts of diamond particles;20 parts of acrylonitrile-butadiene rubber powder;Poly- third
12 parts of alkene fiber;8 parts of boron nitride;Diamond is cheap using diamond synthesis, and hardness is high.
Embodiment eight and the difference of embodiment seven are:Embodiment eight is using friction material disclosed in CN201480061713.7
Material;It tests, see the table below through inventor.
Presently preferred embodiments of the present invention is described above, to illustrate principles and applications, but should be managed
Solution, the present invention can otherwise realize on the basis of without departing from these principles.
Claims (9)
1. a kind of electric power grounding device, it is characterised in that:Including being equipped with the pedestal of walking mechanism, transmission shaft, ratchet, setting the bottom of at
Supporting frame on seat and the pawl being mounted on supporting frame, the transmission shaft is connect by cover for seat with supporting frame, described
Ratchet is flexibly connected with transmission shaft, and the transmission shaft is equipped with position limiting structure and friction component, and one end of the transmission shaft is equipped with
Whim, the transverse arm of support frame as described above body be equipped with for restrict across fixed pulley, the rope free end on the whim is set
There is clump weight, the pedestal side is equipped with the earthing rod guide sleeve being movably connected with the base, and the pedestal is oriented to equipped with righting
Mechanism;The earthing rod is equipped with blind hole, and the earthing rod is equipped with the anti-theft hole being connected to blind hole, is equipped in the anti-theft hole
Block, the interior drill rod for being equipped with driving block and being displaced outwardly of the blind hole.
2. electric power grounding device as described in claim 1, it is characterised in that:The righting guiding mechanism includes being arranged in pedestal
On telescopic rod, be sleeved on holding out against spring and the supporting positive cover that telescopic rod free end is sleeved on earthing rod is set on telescopic rod
Body.
3. electric power grounding device as claimed in claim 2, it is characterised in that:The friction component includes being sleeved on transmission shaft
Clamp nut and be sleeved on transmission that transmission shaft one end prevents actuating swivel nut from exiting is arranged in the actuating swivel nut that is threadedly coupled therewith
Friction damper on axis.
4. electric power grounding device as claimed in claim 3, it is characterised in that:Groove is arranged in the clamp nut side.
5. electric power grounding device as claimed in claim 4, it is characterised in that:The walking mechanism is the rolling being arranged under pedestal
Wheel.
6. electric power grounding device as claimed in claim 5, it is characterised in that:The idler wheel uses Universal self-locking idler wheel.
7. electric power grounding device as claimed in claim 6, it is characterised in that:The earthing rod is equipped with drill rod guide sleeve.
8. electric power grounding device as claimed in claim 7, it is characterised in that:The longitudal section of the drill rod is triangle.
9. a kind of application method of the electric power grounding device as described in claim 1-8 any one, it is characterised in that:Including with
Lower step:
1)Pedestal is moved to earthing rod position to be installed, unclamps earthing rod fixing bolt, earthing rod and ground face contact;
2)It rotates clockwise actuating swivel nut to sling clump weight, rotates counterclockwise actuating swivel nut, clump weight is quickly to moving down at this time
It is dynamic, it pounds on earthing rod;Actuating swivel nut is rotated clockwise again to sling clump weight, is rotated counterclockwise actuating swivel nut, is matched at this time
Pouring weight quickly moves down, and pounds on earthing rod again, pounds until by earthing rod into ground;
3)Drill rod is put into blind hole at this time, actuating swivel nut is rotated clockwise and slings clump weight, rotate counterclockwise actuating swivel nut, this
When clump weight quickly move down, pound on drill rod;Actuating swivel nut is rotated clockwise again to sling clump weight, is rotated counterclockwise
Actuating swivel nut, clump weight quickly moves down at this time, pounds on drill rod again, pounds until by drill rod into earthing rod blind hole;It will match
Pouring weight is removed, and the hook for end of restricting is hung on drill rod, rotates clockwise actuating swivel nut, drill rod is pulled out.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610786367.XA CN106207514B (en) | 2016-08-31 | 2016-08-31 | A kind of electric power grounding device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610786367.XA CN106207514B (en) | 2016-08-31 | 2016-08-31 | A kind of electric power grounding device |
Publications (2)
Publication Number | Publication Date |
---|---|
CN106207514A CN106207514A (en) | 2016-12-07 |
CN106207514B true CN106207514B (en) | 2018-11-23 |
Family
ID=58087196
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201610786367.XA Active CN106207514B (en) | 2016-08-31 | 2016-08-31 | A kind of electric power grounding device |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN106207514B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113607983B (en) * | 2021-06-23 | 2024-04-02 | 国网河北省电力有限公司行唐县供电分公司 | Intelligent temporary grounding device for overhauling 10 kilovolt overhead line |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN201262988Y (en) * | 2008-08-27 | 2009-06-24 | 周学昭 | Grounding device |
CN203406493U (en) * | 2013-07-04 | 2014-01-22 | 天津二十冶建设有限公司 | Earth electrode automatic hammer-in device |
CN203794532U (en) * | 2014-04-17 | 2014-08-27 | 新蒲建设集团有限公司 | Distribution cabinet transporting rack for construction site |
CN204012119U (en) * | 2014-07-29 | 2014-12-10 | 国家电网公司 | A kind of simple type earth electrode with automatic strike function is installed power set |
CN204012118U (en) * | 2014-07-29 | 2014-12-10 | 国家电网公司 | A kind of earth rod with vertically-guided function is installed power set |
CN104291224A (en) * | 2014-09-24 | 2015-01-21 | 国家电网公司 | Lifting double-locking hook rotation type mounting mechanism for electromechanical equipment in substation |
CN104563087A (en) * | 2013-10-17 | 2015-04-29 | 北京中企卓创科技发展有限公司 | Dynamic compactor and method for automatically monitoring dynamic compaction construction effectiveness |
CN204991983U (en) * | 2015-07-10 | 2016-01-20 | 周学昭 | Grounding device |
CN105680276A (en) * | 2016-04-05 | 2016-06-15 | 国网山东省电力公司聊城供电公司 | Grounding electrode driver and driving method |
-
2016
- 2016-08-31 CN CN201610786367.XA patent/CN106207514B/en active Active
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN201262988Y (en) * | 2008-08-27 | 2009-06-24 | 周学昭 | Grounding device |
CN203406493U (en) * | 2013-07-04 | 2014-01-22 | 天津二十冶建设有限公司 | Earth electrode automatic hammer-in device |
CN104563087A (en) * | 2013-10-17 | 2015-04-29 | 北京中企卓创科技发展有限公司 | Dynamic compactor and method for automatically monitoring dynamic compaction construction effectiveness |
CN203794532U (en) * | 2014-04-17 | 2014-08-27 | 新蒲建设集团有限公司 | Distribution cabinet transporting rack for construction site |
CN204012119U (en) * | 2014-07-29 | 2014-12-10 | 国家电网公司 | A kind of simple type earth electrode with automatic strike function is installed power set |
CN204012118U (en) * | 2014-07-29 | 2014-12-10 | 国家电网公司 | A kind of earth rod with vertically-guided function is installed power set |
CN104291224A (en) * | 2014-09-24 | 2015-01-21 | 国家电网公司 | Lifting double-locking hook rotation type mounting mechanism for electromechanical equipment in substation |
CN204991983U (en) * | 2015-07-10 | 2016-01-20 | 周学昭 | Grounding device |
CN105680276A (en) * | 2016-04-05 | 2016-06-15 | 国网山东省电力公司聊城供电公司 | Grounding electrode driver and driving method |
Also Published As
Publication number | Publication date |
---|---|
CN106207514A (en) | 2016-12-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN101683957B (en) | Three-dimensional garage | |
CN106549237B (en) | A kind of power ground column of power engineering | |
CN106207514B (en) | A kind of electric power grounding device | |
CN107425441A (en) | Equipment is fixedly mounted in a kind of regulator cubicle with bottom draw function | |
CN106129776B (en) | A kind of earthing or grounding means of anti-electrification installation ground wire | |
CN206040999U (en) | Ground connection stake and extract device | |
CN201010425Y (en) | Special suspending device for gyratory breaker thrust bearing | |
CN106229704B (en) | A kind of power circuit grounding body and special extracting apparatus | |
CN103231342A (en) | Lifting pluggable pin device | |
CN108033338B (en) | A kind of building construction hoist rope broken protector | |
CN103640970B (en) | Anti-rotating positioning device for crane hook | |
CN204281059U (en) | A kind of lifting wind power tower drum suspension hook self-locking drop-proof dropping control device | |
CN206022649U (en) | A kind of anti-theft alarm for electric appliance earthed system | |
CN203588564U (en) | Buffer device of simulation teaching elevator | |
CN110359760B (en) | Safety measure rod and using method | |
CN106207513B (en) | A kind of power equipment anti-theft grounding device | |
CN208078506U (en) | Distribution line live working tool containing device | |
CN202155852U (en) | Bushing dismounting device | |
CN203129557U (en) | Steel-ball gravity-locking type fall-prevention device for integral lifting scaffold | |
CN205408303U (en) | Convenient electric appliance cabinet that removes | |
CN105655938A (en) | Drum shearer power supply cable protection device | |
CN202859950U (en) | Safety belt hook for dismounting derrick | |
CN205714042U (en) | Shackle device on a kind of one-piece drill bit | |
CN104088257A (en) | Gate auto-locking device | |
CN114704193B (en) | Safety protection equipment for power engineering construction |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |