CN105538089A - Cable insulation shielding layer processing device - Google Patents

Cable insulation shielding layer processing device Download PDF

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Publication number
CN105538089A
CN105538089A CN201510846017.3A CN201510846017A CN105538089A CN 105538089 A CN105538089 A CN 105538089A CN 201510846017 A CN201510846017 A CN 201510846017A CN 105538089 A CN105538089 A CN 105538089A
Authority
CN
China
Prior art keywords
cable
layer processing
plant
driving mechanism
processing unit
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
Application number
CN201510846017.3A
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Chinese (zh)
Other versions
CN105538089B (en
Inventor
张海生
张竟成
李炎
张崇民
刘立垚
吴楠
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.)
BEIJING POWER ENGINEERING Co
State Grid Corp of China SGCC
State Grid Beijing Electric Power Co Ltd
Original Assignee
BEIJING POWER ENGINEERING Co
State Grid Corp of China SGCC
State Grid Beijing Electric Power Co Ltd
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 BEIJING POWER ENGINEERING Co, State Grid Corp of China SGCC, State Grid Beijing Electric Power Co Ltd filed Critical BEIJING POWER ENGINEERING Co
Priority to CN201510846017.3A priority Critical patent/CN105538089B/en
Publication of CN105538089A publication Critical patent/CN105538089A/en
Application granted granted Critical
Publication of CN105538089B publication Critical patent/CN105538089B/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B19/00Single-purpose machines or devices for particular grinding operations not covered by any other main group
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00Component parts such as frames, beds, carriages, headstocks
    • B24B41/06Work supports, e.g. adjustable steadies
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02GINSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G1/00Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
    • H02G1/14Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for joining or terminating cables

Abstract

The invention provides a cable insulation shielding layer processing device which comprises a bracket (10), a clamping mechanism (20), a grinding mechanism and a drive mechanism, wherein the clamping mechanism (20) is arranged on the bracket (10); the clamping mechanism (20) is provided with a clamping opening for clamping a cable (90); the grinding mechanism can be rotatably arranged on the cable (90) and is positioned at the insulation shielding layer of the cable (90); and the drive mechanism is in driving connection with the grinding mechanism for driving the grinding mechanism to grind the insulation shielding layer. According to the technical scheme adopted by the invention, the cable insulation shielding layer effectively solves the problem that an insulation shielding fracture cannot be manually processed easily to realize smooth transition in the prior art.

Description

Insulation shield layer processing unit (plant)
Technical field
The present invention relates to power equipment aid technical field, in particular to a kind of insulation shield layer processing unit (plant).
Background technology
At present, 110kV ~ 500kV high-tension cable is single-core cable structure, and High-voltage cable structure comprises milliken conductor, conduction strap, conductor shielding, insulation 1, insulation shielding 2, buffer strip, protective metal shell, anticorrosive coat, oversheath and semi-conductive layer from inside to outside successively.When cable is installed, need stripping insulation shield layer, after insulation shield stripping, the pattern of fracture and distribution map of the electric field are as shown in Figure 1.
Because insulation shielding stripping fracture 3 electric field strength is concentrated, mount stress is needed to bore in order to disperse high voltage electric field again.Before mount stress cone, need by insulation shielding stripping fracture stripping or grinding process in seamlessly transitting, so that the installation of cable stress cone.Insulation shielding seamlessly transit require without pit, impulse-free robustness, have the insulation shielding of a 40mm to seamlessly transit slope, as shown in Figure 2:
In the prior art, manual type process is all used for process insulation shielding fracture, re-uses sand papering fracture after using glass stripping fracture by experienced operator, make it to seamlessly transit.If workman's handicraft is not smart or operate miss, fracture transition face can out-of-flatness, jagged, or can not seamlessly transit, and has a strong impact on the installation accuracy of cable stress cone.
Summary of the invention
Main purpose of the present invention is to provide a kind of insulation shield layer processing unit (plant), to solve in prior art the problem being manually not easy process insulation shielding fracture and seamlessly transitting.
To achieve these goals, the invention provides a kind of insulation shield layer processing unit (plant), comprising: support; Clamping device, is arranged on support, and clamping device has the clamp port of clamped cable; Workpiece polishing mechanism, to be arranged on rotationally on cable and to be positioned at the insulation screen place of cable; Driving mechanism, drives with workpiece polishing mechanism and is connected, and driving mechanism drives workpiece polishing mechanism polishing insulation screen.
Further, workpiece polishing mechanism comprises: support portion, is set on cable rotationally; Emery wheel, being arranged on rotationally on support portion and corresponding to insulation screen, wherein, driving mechanism comprises the first driving mechanism, and the first driving mechanism is arranged on to drive on support portion and with emery wheel and is connected.
Further, driving mechanism also comprises the second driving mechanism, and the second driving mechanism is arranged on to drive on support and with support portion and is connected.
Further, support portion comprises: the first support ring and the second support ring, to be set on cable and to be positioned at the two ends along its axis of insulation screen; U-shaped carriage, connects the first support ring and the second support ring, and emery wheel is supported in U-shaped carriage rotationally, and the first driving mechanism is fixed on U-shaped carriage.
Further, support portion also comprises connecting plate, and connecting plate to be connected between the first support ring and the second support ring and grinding wheel avoiding.
Further, workpiece polishing mechanism also comprises the first back-up block, and the first back-up block has the first installing hole that current supply cable wears, and the first support ring is arranged on the first back-up block rotationally.
Further, workpiece polishing mechanism also comprises fixed disk and rotating disc, and fixed disk to be fixed on the first back-up block and to be set in outside cable, and rotating disc to be arranged on rotationally on fixed disk and to be set in outside cable, first support ring is fixing on the rotating pan, and rotating disc drives with the second driving mechanism and is connected.
Further, insulation shield layer processing unit (plant) also comprises the second back-up block, and the second back-up block has the first installing hole that current supply cable wears, and the first support ring and the second support ring are between the first back-up block and the second back-up block.
Further, clamping device comprises: the first holding piece and the second holding piece, and the first holding piece and the second holding piece are oppositely arranged, and form clamp port between the first holding piece and the second holding piece; Drive screw, is all connected with the first holding piece and the second holding piece, clamps or releases cable to drive the first holding piece and the second holding piece.
Further, clamping device is two, and two clamping device intervals arrange and are positioned at the relative both sides of workpiece polishing mechanism.
Apply technical scheme of the present invention, lived by cable clamping by clamping device, driving mechanism drives the insulation screen of workpiece polishing mechanism polishing cable.Above-mentioned insulation shield layer processing unit (plant) adopts power-actuated mode to polish insulation screen, effectively ensure that the quality that insulation screen fracture seamlessly transits, efficiently solve insulation shield fracture in HV cable accessories installation process and not easily automatically process the difficult problem seamlessly transitted, no longer rely on the skilled worker having years of training experience, avoid the transient deviation because workman is unskilled or individual factors causes and error, greatly accelerating operating efficiency, reducing because processing the rework cost after failure.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the distribution map of the electric field of fracture after the insulation screen stripping of cable of the prior art;
The distribution map of the electric field that after Fig. 2 shows the insulation screen stripping of cable of the prior art, fracture seamlessly transits;
Fig. 3 shows the perspective view of the embodiment according to insulation shield layer processing unit (plant) of the present invention;
Fig. 4 shows the structural representation of another angle of the insulation shield layer processing unit (plant) of Fig. 3; And
Fig. 5 shows the schematic top plan view of the insulation shield layer processing unit (plant) of Fig. 3.
Wherein, above-mentioned accompanying drawing comprises the following drawings mark:
1, insulate; 2, insulation shielding; 3, insulation shielding stripping fracture; 10, support; 20, clamping device; 21, the first holding piece; 22, the second holding piece; 23, drive screw; 24, handle; 31, emery wheel; 32, the first support ring; 33, the second support ring; 34, U-shaped carriage; 35, connecting plate; 41, the first driving mechanism; 42, the second driving mechanism; 51, the first back-up block; 52, the second back-up block; 61, fixed disk; 62, rotating disc; 71, chain; 90, cable.
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
As shown in Fig. 3 to 5, the insulation shield layer processing unit (plant) of the present embodiment comprises support 10, clamping device 20, workpiece polishing mechanism and driving mechanism.Clamping device 20 arranges over the mount 10, clamping device 20 has the clamp port of clamped cable 90, workpiece polishing mechanism to be arranged on rotationally on cable 90 and to be positioned at the insulation screen place of cable 90, and driving mechanism drives with workpiece polishing mechanism and is connected, and driving mechanism drives workpiece polishing mechanism polishing insulation screen.
The insulation shield layer processing unit (plant) of application the present embodiment, is clamped cable 90 by clamping device 20, and driving mechanism drives the insulation screen of workpiece polishing mechanism polishing cable.Above-mentioned insulation shield layer processing unit (plant) adopts power-actuated mode to polish insulation screen, effectively ensure that the quality that insulation screen fracture seamlessly transits, efficiently solve insulation shield fracture in HV cable accessories installation process and not easily automatically process the difficult problem seamlessly transitted, no longer rely on the skilled worker having years of training experience, avoid the transient deviation because workman is unskilled or individual factors causes and error, greatly accelerating operating efficiency, reducing because processing the rework cost after failure.
Alternatively, workpiece polishing mechanism comprises support portion and emery wheel 31, and support portion is set on cable 90 rotationally, and emery wheel 31 is arranged on rotationally on support portion and also corresponds to insulation screen.Wherein, driving mechanism comprises the first driving mechanism 41, first driving mechanism 41 and is arranged on to drive on support portion and with emery wheel 31 and is connected.Support portion is for supporting emery wheel 31, and the first driving mechanism 41 drives emery wheel 31 to rotate, and emery wheel 31 contacts with insulation screen insulation screen of polishing.Preferably, the first driving mechanism 41 is the first drive motors, and emery wheel 31 is arranged on the output shaft of the first drive motors, and the first drive motors provides rotation power by output shaft to emery wheel.The shape of the longitudinal profile of emery wheel 31 is trapezoidal, the axis of emery wheel and the axis being parallel of cable, effectively can be polished into by insulation shielding fracture and seamlessly transit.Certainly, emery wheel 31 also can be cylinder, at this moment only needs to arrange between the axis of emery wheel 31 and the axis of cable to have angle.
Alternatively, driving mechanism also comprises the second driving mechanism 42, second driving mechanism 42 and arranges over the mount 10 and drive with support portion and be connected.Second driving mechanism 42 drives support portion to rotate, and support portion is rotated and emery wheel 31 can be polished a week of insulation screen, thus completes seamlessly transitting of insulation shield fracture.Preferably, the second driving mechanism 42 is the second drive motors.
Alternatively, support portion comprises the first support ring 32, second support ring 33 and U-shaped carriage 34, first support ring 32 and the second support ring 33 to be set on cable 90 and to be positioned at the two ends along its axis of insulation screen, U-shaped carriage 34 connects the first support ring 32 and the second support ring 33, emery wheel 31 is supported in U-shaped carriage 34 rotationally, and the first driving mechanism 41 is fixed on U-shaped carriage 34.First support ring 32, second support ring 33 and U-shaped carriage 34, for supporting emery wheel 31 and the first driving mechanism 41, make emery wheel run more stable like this, thus ensure the quality that insulation screen fracture seamlessly transits.Support portion is used for fixed emery wheel and the first driving mechanism 41, and its time rotational can not be dropped.Emery wheel 31 have been grown and to have had wearing and tearing service time, can change emery wheel.
Alternatively, support portion also comprises connecting plate 35, and connecting plate 35 to be connected between the first support ring 32 and the second support ring 33 and grinding wheel avoiding 31.Connecting plate 35, for fixing the first support ring 32 and the second support ring 33, makes the structure of support portion more solid and reliable, and then makes grinding wheel movement more stable, thus ensures the quality that insulation screen fracture seamlessly transits.
Alternatively, workpiece polishing mechanism also comprises the first back-up block 51, first back-up block 51 and has the first installing hole that current supply cable 90 wears, and the first support ring 32 is arranged on the first back-up block 51 rotationally.First back-up block 51, for support portion, makes the first support ring 32 be supported on rotationally on the first back-up block 51.
Alternatively, workpiece polishing mechanism also comprises fixed disk 61 and rotating disc 62, fixed disk 61 to be fixed on the first back-up block 51 and to be set in outside cable 90, rotating disc 62 to be arranged on rotationally on fixed disk 61 and to be set in outside cable 90, first support ring 32 is fixed on rotating disc 62, and rotating disc 62 drives with the second driving mechanism 42 and is connected.Rotating disc 62 is fixed on the first back-up block 51 by fixed disk 61, second driving mechanism 42 drives rotating disc 62 to rotate, rotating disc 62 rotates drive first support ring 32, and then drives emery wheel to revolve round the sun centered by the axis of cable, and then completes one week of polishing insulation screen.
Preferably, the output shaft of the second drive motors is provided with sprocket wheel, the side face of rotating disc 62 is provided with multiple tooth, and sprocket wheel is connected by chain 71 with tooth.The output shaft rotation of the second drive motors, drive sprocket rotation, thus drive chain 71 to rotate, chain 71 rotates and drives rotating disc to rotate, rotating disc 62 rotates drive first support ring 32, and then drive emery wheel to revolve round the sun centered by the axis of cable, and then complete one week of polishing insulation screen.
Alternatively, insulation shield layer processing unit (plant) also comprises the second back-up block 52, second back-up block 52 and has the first installing hole that current supply cable 90 wears, and the first support ring 32 and the second support ring 33 are between the first back-up block 51 and the second back-up block 52.
Alternatively, clamping device 20 comprises the first holding piece 21, second holding piece 22 and drive screw 23, first holding piece 21 and the second holding piece 22 are oppositely arranged, clamp port is formed between first holding piece 21 and the second holding piece 22, drive screw 23 is all connected with the first holding piece 21 and the second holding piece 22, clamps or releases cable 90 to drive the first holding piece 21 and the second holding piece 22.Clamp port is used for clamped cable.Drive screw 23 drives the first holding piece 21 and the second holding piece 22 to move towards the direction of cable simultaneously, clamping cables, and then polishing insulation screen; Drive screw 23 drives the first holding piece 21 and the second holding piece 22 to move to the direction away from cable simultaneously, releases cable, and then takes off the cable of having polished.
Alternatively, handle 24 is provided with in the end of drive screw 23.Handle 24 can handled easily human users drive screw 23, easy and simple to handle laborsaving, reduces the labour intensity of operating personnel.
Alternatively, clamping device 20 is two, and two clamping device 20 intervals arrange and are positioned at the relative both sides of workpiece polishing mechanism.Two clamping devices 20 clamp from the both sides of workpiece polishing mechanism cable, fixing more solid and reliable, and cable in bruting process is maintained static, and ensure the quality that insulation screen fracture seamlessly transits.
Use the mode of operation of the insulation shield layer processing unit (plant) of the present embodiment as follows:
(1) by cable straightening, and workpiece polishing mechanism is inserted on cable;
(2) with two gripper mechanism grips cables;
(3) rotatably compress the first drive motors, the position of adjustment emery wheel, makes emery wheel contact with insulation shield fracture face.
(4) switch on power startup first drive motors and the second drive motors, and emery wheel revolves round the sun and autobiography polishing cable insulation fracture screen layer on cable.
The support of the insulation shield layer processing unit (plant) of the present embodiment is of a size of 900mm × 450mm × 402mm, and the working time is 60 seconds, is suitable for cable: 110KV--500KV, polishing speed: 1000 turns/min.Insulation shield incision position reason can automatically seamlessly transit by above-mentioned insulation shield layer processing unit (plant), to be polished insulation shield layer fracture by power-actuated mode, effectively automatically, can be disposed insulation shield fracture, makes it in a slope seamlessly transitted.Effectively like this ensure that the quality that insulation shield fracture seamlessly transits, avoid the deviation because workman is unskilled or individual factors causes and error, greatly accelerating operating efficiency, reducing because processing the rework cost after failure, no longer rely on the processing mode having skilled skilled workers.Said apparatus passes through the mode automatically grinding insulation fracture surface of emery wheel rotation and revolution, can process complete cycle insulation shield, reduce manually-operated difficulty, instrument is reliably easy, can be widely used in the work of cable accessory installation, installing industry to whole cable all has propelling meaning.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (10)

1. an insulation shield layer processing unit (plant), is characterized in that, comprising:
Support (10);
Clamping device (20), be arranged on described support (10), described clamping device (20) has the clamp port of clamped cable (90);
Workpiece polishing mechanism, is arranged on described cable (90) rotationally and goes up and the insulation screen place being positioned at described cable (90);
Driving mechanism, drives with described workpiece polishing mechanism and is connected, and described driving mechanism drives described workpiece polishing mechanism to polish described insulation screen.
2. insulation shield layer processing unit (plant) according to claim 1, it is characterized in that, described workpiece polishing mechanism comprises:
Support portion, is set on described cable (90) rotationally;
Emery wheel (31), is arranged on rotationally on described support portion and also corresponds to described insulation screen,
Wherein, described driving mechanism comprises the first driving mechanism (41), and described first driving mechanism (41) is arranged on to drive on described support portion and with described emery wheel (31) and is connected.
3. insulation shield layer processing unit (plant) according to claim 2, it is characterized in that, described driving mechanism also comprises the second driving mechanism (42), and it is upper and drive with described support portion and be connected that described second driving mechanism (42) is arranged on described support (10).
4. insulation shield layer processing unit (plant) according to claim 3, it is characterized in that, described support portion comprises:
First support ring (32) and the second support ring (33), be set in described cable (90) and go up and the two ends along its axis being positioned at described insulation screen;
U-shaped carriage (34), connect described first support ring (32) and described second support ring (33), described emery wheel (31) is supported in described U-shaped carriage (34) rotationally, and described first driving mechanism (41) is fixed on described U-shaped carriage (34).
5. insulation shield layer processing unit (plant) according to claim 4, it is characterized in that, described support portion also comprises connecting plate (35), and described connecting plate (35) to be connected between described first support ring (32) and described second support ring (33) and to dodge described emery wheel (31).
6. insulation shield layer processing unit (plant) according to claim 4, it is characterized in that, described workpiece polishing mechanism also comprises the first back-up block (51), described first back-up block (51) has the first installing hole worn for described cable (90), and described first support ring (32) is arranged on described first back-up block (51) rotationally.
7. insulation shield layer processing unit (plant) according to claim 6, it is characterized in that, described workpiece polishing mechanism also comprises fixed disk (61) and rotating disc (62), described fixed disk (61) is fixed on described first back-up block (51) and goes up and be set in described cable (90) outward, described rotating disc (62) is arranged on described fixed disk (61) rotationally and goes up and be set in described cable (90) outward, described first support ring (32) is fixed on described rotating disc (62), described rotating disc (62) drives with described second driving mechanism (42) and is connected.
8. insulation shield layer processing unit (plant) according to claim 6, it is characterized in that, described insulation shield layer processing unit (plant) also comprises the second back-up block (52), described second back-up block (52) has the first installing hole worn for described cable (90), and described first support ring (32) and described second support ring (33) are positioned between described first back-up block (51) and described second back-up block (52).
9. insulation shield layer processing unit (plant) according to claim 1, is characterized in that, described clamping device (20) comprising:
First holding piece (21) and the second holding piece (22), described first holding piece (21) and described second holding piece (22) are oppositely arranged, and form described clamp port between described first holding piece (21) and described second holding piece (22);
Drive screw (23), all be connected with described first holding piece (21) and described second holding piece (22), clamp to drive described first holding piece (21) and described second holding piece (22) or unclamp described cable (90).
10. insulation shield layer processing unit (plant) according to claim 1, is characterized in that, described clamping device (20) is two, and two described clamping device (20) intervals arrange and are positioned at the relative both sides of described workpiece polishing mechanism.
CN201510846017.3A 2015-11-26 2015-11-26 Insulation shield layer processing unit (plant) Active CN105538089B (en)

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CN105538089B CN105538089B (en) 2018-04-06

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110977723A (en) * 2019-11-27 2020-04-10 中国电子科技集团公司第十三研究所 Solder removing tool
CN111313334A (en) * 2020-01-17 2020-06-19 国网浙江省电力有限公司嘉兴供电公司 Three-grab chuck type cable aluminum sheath cutting device and cutting method thereof
CN112372385A (en) * 2020-09-27 2021-02-19 国网河南省电力公司信阳供电公司 Electric grinding machine for manufacturing cable head
CN113451946A (en) * 2021-08-03 2021-09-28 广东电网有限责任公司 Full-automatic cable joint manufacturing tool
CN113635149A (en) * 2021-08-25 2021-11-12 广东电网有限责任公司 Cable insulation polisher

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CN103358203A (en) * 2013-06-24 2013-10-23 青岛兴河建材有限公司 Reinforcing bar welding joint polishing device and polishing method
CN204772016U (en) * 2015-06-16 2015-11-18 郭伟圣 Steel pipe burnishing and polishing device
CN205129565U (en) * 2015-11-26 2016-04-06 国网北京市电力公司 Cable insulation shielding layer processingequipment

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CN2736108Y (en) * 2004-10-09 2005-10-26 中国船舶重工集团公司第七一七研究所 Automatic cylindrical polishing machine
CN1631616A (en) * 2004-12-30 2005-06-29 暨南大学 Optical fiber side edge polishing and grinding apparatus and its processing method
CN202556166U (en) * 2012-05-05 2012-11-28 江苏弘腾机械制造有限公司 Back-up roll polishing device for band steel production line
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110977723A (en) * 2019-11-27 2020-04-10 中国电子科技集团公司第十三研究所 Solder removing tool
CN110977723B (en) * 2019-11-27 2021-06-15 中国电子科技集团公司第十三研究所 Solder removing tool
CN111313334A (en) * 2020-01-17 2020-06-19 国网浙江省电力有限公司嘉兴供电公司 Three-grab chuck type cable aluminum sheath cutting device and cutting method thereof
CN111313334B (en) * 2020-01-17 2021-03-23 国网浙江省电力有限公司嘉兴供电公司 Three-grab chuck type cable aluminum sheath cutting device and cutting method thereof
CN112372385A (en) * 2020-09-27 2021-02-19 国网河南省电力公司信阳供电公司 Electric grinding machine for manufacturing cable head
CN113451946A (en) * 2021-08-03 2021-09-28 广东电网有限责任公司 Full-automatic cable joint manufacturing tool
CN113635149A (en) * 2021-08-25 2021-11-12 广东电网有限责任公司 Cable insulation polisher
CN113635149B (en) * 2021-08-25 2022-08-30 广东电网有限责任公司 Cable insulation polisher

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