CN106735527A - A kind of electronic bolt clipper - Google Patents
A kind of electronic bolt clipper Download PDFInfo
- Publication number
- CN106735527A CN106735527A CN201710134374.6A CN201710134374A CN106735527A CN 106735527 A CN106735527 A CN 106735527A CN 201710134374 A CN201710134374 A CN 201710134374A CN 106735527 A CN106735527 A CN 106735527A
- Authority
- CN
- China
- Prior art keywords
- binding clip
- clamp handle
- connector
- pole
- motor
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D29/00—Hand-held metal-shearing or metal-cutting devices
- B23D29/02—Hand-operated metal-shearing devices
- B23D29/023—Hand-operated metal-shearing devices for cutting wires
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Scissors And Nippers (AREA)
Abstract
The present invention relates to a kind of electronic bolt clipper, the bolt clipper includes pole and is arranged on the connector of pole front end, the connector is provided with quadric chain and the binding clip component being connected with quadric chain, the slider-crank mechanism being connected with quadric chain is sequentially provided with connector and pole from front to back, the ball screw framework being connected with slider-crank mechanism and the motor-driven mechanism being connected with ball screw framework, the motor-driven mechanism drives ball screw framework successively, slider-crank mechanism, quadric chain and binding clip component movement, the electric wire being placed in binding clip component is cut.Compared with prior art, shear strength of the present invention is big, and operation is light, saves manpower, high working efficiency, good portability, and the bolt clipper length is larger, lightweight, and the security and high efficiency of work high above the ground has been effectively ensured.
Description
Technical field
The invention belongs to technical field of electric power construction, it is related to a kind of electronic bolt clipper.
Background technology
, it is necessary to often cut electric wire in the case where not powering off in power construction operation.Bolt clipper is conventional one kind
Instrument, more easily can cut electric wire.Existing bolt clipper is broadly divided into two classes, i.e. big machinery bolt clipper and small-sized
Manual bolt clipper.Wherein, big machinery bolt clipper is frequently with hydraulic-driven, and its is bulky, heavy, is not easy to movement, lacks
Flexibility, is restricted using scope；The design of small hand bolt clipper derive from scissors principle, with it is simple to operate, use
The advantages such as convenience, small volume, can carry with, but small hand bolt clipper can only cut thinner wire rod, when run into compared with
During thick metal wire rod, small hand bolt clipper shearing wire rod it is difficult larger, operator needs to use larger strength just may be used
Wire rod is cut off reluctantly, and not only labour intensity is big, can also directly influence operating efficiency.In the air during operation, big machinery broken string
Pincers cannot be carried with, it is difficult to be applicable；And small hand bolt clipper is then difficult to easily and quickly cut electric wire, operate time-consuming
Arduously, operating efficiency is greatly reduced.
Application publication number discloses a kind of electronic bolt clipper, including bottom for the Chinese invention patent of the A of CN 106253130
Seat, main motor, battery and line tweezer, battery are embedded in base, and main motor is fixed on base, and line tweezer includes left pincers and the right side
Pincers, left pincers lower end is fixed on base or main motor, and the top of the top of left pincers and right pincers rotates connection, and direction is provided with left pincers
Groove is cut on a left side for right pincers, is provided with right pincers towards the right side of left pincers and cuts groove, and groove is cut on a left side and the right side is cut groove and is semicircular arc, the bottom of right pincers
Circle-arc tooth is provided with, the roller gear engaged with circle-arc tooth is fixed with the main motor shaft of main motor.The technology of above-mentioned patent disclosure
In scheme, by storage battery power supply, main motor offer power is engaged by tooth and drives right pincers to rotate, and groove is cut on a diminution left side and groove is cut on the right side
Between spacing, and then the cable that will pass through cuts, and not only with larger shear strength, and is easy to carry about with one.But, the electricity
In use, main motor needs larger torque to dynamic circuit breaker line tweezer, can provide enough shear strengths, not only increases
The cost of main motor, and the size and weight of main motor can also increase, and then increase the overall volume of electronic bolt clipper and weight
Amount, limits the further raising of its portability.
The content of the invention
The purpose of the present invention be exactly provided for the defect for overcoming above-mentioned prior art to exist a kind of high working efficiency and
The electronic bolt clipper of good portability.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of electronic bolt clipper, the bolt clipper includes pole and is arranged on the connector of pole front end, on the connector
Quadric chain and the binding clip component being connected with quadric chain are provided with, on described connector and pole from front to back
It is sequentially provided with the ball-screw machine of the slider-crank mechanism and slider-crank mechanism drive connection being connected with quadric chain
Structure and the motor-driven mechanism being connected with ball screw framework, the motor-driven mechanism drive ball-screw machine successively
Structure, slider-crank mechanism, quadric chain and binding clip component movement, the electric wire being placed in binding clip component are cut.
Elongate holes are offered on described connector, the rotating shaft being hinged with connector, this turn are provided with the elongate holes
The front end of axle is connected with quadric chain, and rear end is connected with slider-crank mechanism.Rotating shaft can be in quadric chain
Rotated around pin joint in plane of movement, and the motion of slider-crank mechanism is transferred to quadric chain.
Described binding clip component includes the first binding clip, the second binding clip that are hinged, the first described binding clip and the second pincers
The corresponding section of head is equipped with the edge of a knife.Place the wires between the first binding clip and the second binding clip, in the drive of motor-driven mechanism
Under, the first binding clip relatively rotates with the second binding clip, makes the edge of a knife of the first binding clip and the second binding clip close to each other, and then by electricity
Line is cut.
Described quadric chain includes being arranged on the first clamp handle between connector and the first binding clip and the second binding clip
Clamp handle connection rod set that the rear end of the second connected clamp handle of rear end and the second clamp handle is hinged and respectively with clamp handle connection rod set and be connected
The connector connecting rod that part is hinged, the connector connecting rod is hinged by rotating shaft with connector.The rear end of connector connecting rod and rotating shaft
Front end is fixedly linked.First clamp handle, the second clamp handle, clamp handle connection rod set and connector connecting rod constitute quadric chain together, will transport
It is dynamic to be transferred to binding clip component.
Described clamp handle connection rod set and the first clamp handle intersect setting.
Used as preferred technical scheme, the first described binding clip and the first clamp handle are integral type, described the second binding clip with
Second clamp handle is integral type.
As preferred technical scheme, the first clamp handle connector is provided between the first described clamp handle and connector, be used for
First clamp handle and connector are fixed together.
It is solid by bolt between the first described clamp handle and the first clamp handle connector as further preferred technical scheme
Fixed connection.
Described clamp handle connection rod set includes the first clamp handle connecting rod, the second clamp handle connecting rod respectively positioned at the first clamp handle both sides,
The first described clamp handle connecting rod and the two ends of the second clamp handle connecting rod respectively with the second clamp handle, connector rod hinge connection.First pincers
Handle connecting rod and the second clamp handle connecting rod are symmetricly set on the both sides of the first clamp handle, ensure that the balance and stabilization work of quadric chain
Make.
Described slider-crank mechanism includes that the sliding block that the rear end of the crank and crank being connected with the rear end of rotating shaft is hinged connects
Bar and the sliding block for being slidably arranged on pole and being connected with slide block connecting rod, the length of described crank are more than slide block connecting rod
Length.Sliding block can be moved along strut lengths direction, and drive slide block connecting rod and crank-motion successively.When sliding block is to binding clip component
When direction is moved, the first binding clip is tapered into the closure speed of the second binding clip, and shearing force gradually increases, and helps quickly to cut
Power-off line.
Described ball screw framework include the leading screw parallel with pole, be arranged on leading screw front end and with crank block machine
The push rod of structure drive connection and the ball nut for being set on leading screw and being connected with motor-driven mechanism.Push rod and sliding block
Drive connection.Motor-driven mechanism drives ball nut to rotate, and leading screw is moved along strut lengths direction, and is driven by push rod
Slide block movement.
As preferred technical scheme, push rod connector is provided between described leading screw front end and push rod, for by leading screw
Front end is fixed together with push rod.
Described motor-driven mechanism includes the cabinet being arranged on pole, is arranged in cabinet and is driven with ball nut
The motor of connection and the battery electrically connected with motor.Battery can provide electric energy for motor, bolt clipper is easy to carry, flexibly
Property is good.The rotation of motor drives ball nut to rotate, and outputs power to leading screw.
Described leading screw runs through cabinet.
Used as preferred technical scheme, described motor is direct current generator.Motor has overload protection function, in motor work
When making, if there is motor overload, motor will start self-protection function, will be automatically powered off when reaching maximum load.
Used as preferred technical scheme, described battery is arranged on the lateral surface of cabinet, be easy to the installation of battery with more
Change.
Ball nut gear is also arranged with described leading screw, the ball nut gear is fixedly connected with ball nut, institute
The motor stated is provided with the motor gear being meshed with ball nut gear.Motor drive motor gear, ball nut tooth successively
Wheel is rotated, and ball nut is rotated with ball nut gear synchronous, outputs power to leading screw.
Described ball nut gear is concentric with ball nut.
Described pole includes pole leading portion and pole back segment, described motor be arranged on pole leading portion and pole back segment it
Between.Pole is divided into two sections by motor, and motor is located between two sections of poles, to reduce the volume of motor-driven mechanism.
The rear end of described pole is provided with support, and the rear end for being easy to operator to grasp pole carries out construction operation.
The control button electrically connected with motor is additionally provided with described pole, the control button is located at cabinet with a support
Between, the forward, reverse or stop for controlled motor stop, that is, control the closure of the first binding clip and the second binding clip, separate or stop.
Described pole, quadric chain and slider-crank mechanism are made by insulating materials.
The present invention in practical application, grasp the rear end of pole, place the wires in the first binding clip and the second binding clip it
Between, operational control button rotates motor, and motor drives the motion of the second binding clip, makes the edge of a knife phase of the second binding clip and the first binding clip
Mutually it is close to, and then electric wire is cut.
Compared with prior art, the invention has the characteristics that：
1) battery-powered, motor provides power, and ball screw framework, slider-crank mechanism, double leval jib machine are driven successively
Structure and binding clip component movement, the electric wire being placed in binding clip component are cut, and shear strength is big, and operation is light, saves manpower, work
Efficiency high, good portability, and the bolt clipper length is larger, in the air during operation, one end of pole can be held, to certain distance
Interior electric wire carries out cutting operation, without frequent shift position, the security and high efficiency of work high above the ground has been effectively ensured；
2) use using gear transmission mode between ball screw framework, and motor and ball nut, thus with efficiency
The characteristics of high, small torque high thrust, effectively reduce the torque that motor needs to provide, reduce the size of motor, weight and into
Sheet, and then the weight of whole bolt clipper is alleviated, it is more easily carried bolt clipper；
3) length of the length more than slide block connecting rod of use slider-crank mechanism drive parallel motion, and crank,
So that the characteristics of present invention is with shearing first quick and back slow, is capable of achieving with the first binding clip and the gradually closure of the second binding clip,
Shearing force between first binding clip and the second binding clip gradually increases, and helps smoothly to cut electric wire；
4) good operating stability, good insulating can realize the cut-out to cable in the case where not powering off.
Brief description of the drawings
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is the structural representation of ball screw framework and motor-driven mechanism in the present invention；
Fig. 3 is the structural representation of the first binding clip and the second binding clip under released state in the present invention；
Fig. 4 is the structural representation of the first binding clip and the second binding clip under closure state in the present invention；
Description of symbols in figure：
1-pole, 2-connector, the 3-the first binding clip, the 4-the second binding clip, the 5-the first clamp handle, the 6-the second clamp handle, 7-
Connector connecting rod, the 81-the first clamp handle connecting rod, the 82-the second clamp handle connecting rod, 9-elongate holes, 10-rotating shaft, 11-crank,
12-slide block connecting rod, 13-sliding block, 14-leading screw, 15-push rod, 16-cabinet, 17-motor, 18-ball nut gear,
19-motor gear, 20-battery.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.The present embodiment is with technical solution of the present invention
Premised on implemented, give detailed implementation method and specific operating process, but protection scope of the present invention is not limited to
Following embodiments.
Embodiment：
A kind of electronic bolt clipper as shown in Figure 1, the bolt clipper includes pole 1 and is arranged on the connection of the front end of pole 1
Part 2, the connector 2 is provided with quadric chain and the binding clip component being connected with quadric chain, connector 2 and pole
The slider-crank mechanism and slider-crank mechanism drive connection being connected with quadric chain are sequentially provided with 1 from front to back
Ball screw framework and the motor-driven mechanism that is connected with ball screw framework, the motor-driven mechanism drives successively
Ball screw framework, slider-crank mechanism, quadric chain and binding clip component movement, the electric wire being placed in binding clip component are cut
It is disconnected.
Wherein, elongate holes 9 are offered on connector 2, the rotating shaft 10 being hinged with connector 2 are provided with the elongate holes 9,
The front end of the rotating shaft 10 is connected with quadric chain, and rear end is connected with slider-crank mechanism.
Binding clip component includes the first binding clip 3, the second binding clip 4 that are hinged, the first binding clip 3 and the second binding clip 4 it is relative
Should place be equipped with the edge of a knife.
After quadric chain includes being arranged on the first clamp handle 5 between the binding clip 3 of connector 2 and first and the second binding clip 4
Clamp handle connection rod set that the rear end of the second connected clamp handle 6 of end and the second clamp handle 6 is hinged and respectively with clamp handle connection rod set and be connected
The connector connecting rod 7 that part 2 is hinged, the connector connecting rod 7 is hinged by rotating shaft 10 with connector 2.Clamp handle connection rod set includes difference
The first clamp handle connecting rod 81, the second clamp handle connecting rod 82 positioned at the both sides of the first clamp handle 5, the first clamp handle connecting rod 81 and the second clamp handle connecting rod
82 two ends are respectively hinged with the second clamp handle 6, connector connecting rod 7.
Slider-crank mechanism includes that the sliding block that the rear end of the crank 11 and crank 11 being connected with the rear end of rotating shaft 10 is hinged connects
Bar 12 and the sliding block 13 for being slidably arranged on pole 1 and being connected with slide block connecting rod 12, the length of crank 11 are more than sliding block
The length of connecting rod 12.
As shown in Fig. 2 ball screw framework include the leading screw 14 parallel with pole 1, be arranged on the front end of leading screw 14 and with
The push rod 15 of slider-crank mechanism drive connection and the ball for being set on leading screw 14 and being connected with motor-driven mechanism
Nut.
Motor-driven mechanism includes the cabinet 16 being arranged on pole 1, is arranged in cabinet 16 and is driven with ball nut
The motor 17 of connection and the battery 20 electrically connected with motor 17.Ball nut gear 18 is also arranged with leading screw 14, the ball
Nut gear 18 is fixedly connected with ball nut, and motor 17 is provided with the motor gear 19 being meshed with ball nut gear 18.
Pole 1 includes pole leading portion and pole back segment, and motor 17 is arranged between pole leading portion and pole back segment.
As shown in Figure 3, Figure 4, bolt clipper places the wires in the first pincers in practical application, grasp the rear end of pole 1
First 3 and second between binding clip 4, and operational control button rotates motor 17, and motor 17 drives the second binding clip 4 to move, and makes the second pincers
First 4 is close to each other with the edge of a knife of the first binding clip 3, and then electric wire is cut.
The above-mentioned description to embodiment is to be understood that and use invention for ease of those skilled in the art.
Person skilled in the art obviously can easily make various modifications to these embodiments, and described herein general
Principle is applied in other embodiment without by performing creative labour.Therefore, the invention is not restricted to above-described embodiment, ability
Field technique personnel announcement of the invention, does not depart from improvement that scope made and modification all should be of the invention
Within protection domain.
Claims (10)
1. a kind of electronic bolt clipper, it is characterised in that the bolt clipper includes pole (1) and is arranged on the company of pole (1) front end
Fitting (2), the connector (2) is provided with quadric chain and the binding clip component being connected with quadric chain, described
The slider-crank mechanism and crank being connected with quadric chain are sequentially provided with connector (2) and pole (1) from front to back
The ball screw framework of slide block mechanism drive connection and the motor-driven mechanism being connected with ball screw framework, the motor
Drive mechanism drives ball screw framework, slider-crank mechanism, quadric chain and binding clip component movement successively, is placed on binding clip
Electric wire in component is cut.
2. a kind of electronic bolt clipper according to claim 1, it is characterised in that offer length on described connector (2)
The rotating shaft (10) being hinged with connector (2) is provided with bar hole (9), the elongate holes (9), the front end of the rotating shaft (10) connects with four
Linkage is connected, and rear end is connected with slider-crank mechanism.
3. a kind of electronic bolt clipper according to claim 2, it is characterised in that described binding clip component includes being hinged
The first binding clip (3), the second binding clip (4), described the first binding clip (3) and the corresponding section of the second binding clip (4) are equipped with the edge of a knife.
4. a kind of electronic bolt clipper according to claim 3, it is characterised in that described quadric chain includes being arranged on
The second clamp handle (6) that the first clamp handle (5) between connector (2) and the first binding clip (3) is connected with the rear end of the second binding clip (4),
The clamp handle connection rod set being hinged with the rear end of the second clamp handle (6) and the connection being hinged with clamp handle connection rod set and connector (2) respectively
Part connecting rod (7), the connector connecting rod (7) is hinged by rotating shaft (10) with connector (2).
5. a kind of electronic bolt clipper according to claim 4, it is characterised in that described clamp handle connection rod set includes position respectively
The first clamp handle connecting rod (81), the second clamp handle connecting rod (82) in the first clamp handle (5) both sides, described the first clamp handle connecting rod (81) and
The two ends of the second clamp handle connecting rod (82) are respectively hinged with the second clamp handle (6), connector connecting rod (7).
6. a kind of electronic bolt clipper according to claim 2, it is characterised in that described slider-crank mechanism includes and turns
Slide block connecting rod (12) and be slidably arranged in branch that the rear end of the connected crank (11) in the rear end of axle (10) and crank (11) is hinged
The sliding block (13) being connected on bar (1) and with slide block connecting rod (12), the length of described crank (11) is more than slide block connecting rod
(12) length.
7. a kind of electronic bolt clipper according to claim 1, it is characterised in that described ball screw framework includes and branch
The parallel leading screw (14) of bar (1), be arranged on leading screw (14) front end and with slider-crank mechanism be connected push rod (15) with
And the ball nut for being set on leading screw (14) and being connected with motor-driven mechanism.
8. a kind of electronic bolt clipper according to claim 7, it is characterised in that described motor-driven mechanism includes setting
Cabinet (16) on pole (1), the motor (17) for being arranged in cabinet (16) and being connected with ball nut and with electricity
The battery (20) of machine (17) electrical connection.
9. a kind of electronic bolt clipper according to claim 8, it is characterised in that be also arranged with rolling on described leading screw (14)
Pearl nut gear (18), the ball nut gear (18) is fixedly connected with ball nut, and described motor (17) is provided with and rolling
The motor gear (19) that pearl nut gear (18) is meshed.
10. a kind of electronic bolt clipper according to claim 8, it is characterised in that described pole (1) includes pole leading portion
And pole back segment, described motor (17) is arranged between pole leading portion and pole back segment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710134374.6A CN106735527B (en) | 2017-03-08 | 2017-03-08 | Electric bolt clipper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710134374.6A CN106735527B (en) | 2017-03-08 | 2017-03-08 | Electric bolt clipper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106735527A true CN106735527A (en) | 2017-05-31 |
| CN106735527B CN106735527B (en) | 2019-12-06 |
Family
ID=58961150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710134374.6A Expired - Fee Related CN106735527B (en) | 2017-03-08 | 2017-03-08 | Electric bolt clipper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106735527B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107959259A (en) * | 2017-12-21 | 2018-04-24 | 国网山东省电力公司烟台供电公司 | A kind of earth potential live operation abnormity insulation conductor cutter |
| CN109482782A (en) * | 2018-11-08 | 2019-03-19 | 国网河南省电力公司巩义市供电公司 | It can livewire work bolt clipper |
| CN109986528A (en) * | 2019-03-18 | 2019-07-09 | 合肥禾成信息科技有限公司 | A kind of rocking bar control robot |
| CN106735527B (en) * | 2017-03-08 | 2019-12-06 | 国家电网公司 | Electric bolt clipper |
| CN110994457A (en) * | 2019-12-19 | 2020-04-10 | 国家电网有限公司 | Automatic locking device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4254549A (en) * | 1978-12-15 | 1981-03-10 | Hastings Fiber Glass Products, Inc. | Cable cutter |
| JP2008017818A (en) * | 2006-07-10 | 2008-01-31 | Topman Co Ltd | Scissors and cutter |
| US20080092397A1 (en) * | 2004-03-09 | 2008-04-24 | Chih-Ching Hsieh | Multi-functional engineering clipper |
| CN104148545A (en) * | 2014-07-22 | 2014-11-19 | 国家电网公司 | Bolt clippers for large-diameter wires |
| CN105846341A (en) * | 2015-01-13 | 2016-08-10 | 国家电网公司 | Wire clipper and automatic wire-folding machine |
| CN106311937A (en) * | 2015-06-24 | 2017-01-11 | 天津市迈威电力器材科技有限公司 | Efficient labor-saving bolt clipper |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106735527B (en) * | 2017-03-08 | 2019-12-06 | 国家电网公司 | Electric bolt clipper |
-
2017
- 2017-03-08 CN CN201710134374.6A patent/CN106735527B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4254549A (en) * | 1978-12-15 | 1981-03-10 | Hastings Fiber Glass Products, Inc. | Cable cutter |
| US20080092397A1 (en) * | 2004-03-09 | 2008-04-24 | Chih-Ching Hsieh | Multi-functional engineering clipper |
| JP2008017818A (en) * | 2006-07-10 | 2008-01-31 | Topman Co Ltd | Scissors and cutter |
| CN104148545A (en) * | 2014-07-22 | 2014-11-19 | 国家电网公司 | Bolt clippers for large-diameter wires |
| CN105846341A (en) * | 2015-01-13 | 2016-08-10 | 国家电网公司 | Wire clipper and automatic wire-folding machine |
| CN106311937A (en) * | 2015-06-24 | 2017-01-11 | 天津市迈威电力器材科技有限公司 | Efficient labor-saving bolt clipper |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106735527B (en) * | 2017-03-08 | 2019-12-06 | 国家电网公司 | Electric bolt clipper |
| CN107959259A (en) * | 2017-12-21 | 2018-04-24 | 国网山东省电力公司烟台供电公司 | A kind of earth potential live operation abnormity insulation conductor cutter |
| CN109482782A (en) * | 2018-11-08 | 2019-03-19 | 国网河南省电力公司巩义市供电公司 | It can livewire work bolt clipper |
| CN109986528A (en) * | 2019-03-18 | 2019-07-09 | 合肥禾成信息科技有限公司 | A kind of rocking bar control robot |
| CN110994457A (en) * | 2019-12-19 | 2020-04-10 | 国家电网有限公司 | Automatic locking device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106735527B (en) | 2019-12-06 |
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