CN101320899A - Deicing machine for aerial cable - Google Patents
Deicing machine for aerial cable Download PDFInfo
- Publication number
- CN101320899A CN101320899A CNA200810052563XA CN200810052563A CN101320899A CN 101320899 A CN101320899 A CN 101320899A CN A200810052563X A CNA200810052563X A CN A200810052563XA CN 200810052563 A CN200810052563 A CN 200810052563A CN 101320899 A CN101320899 A CN 101320899A
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- aerial cable
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- ice
- tubular
- drag device
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Abstract
The invention provided an overhead wire deicer, which is composed of a dragging machine driven by batteries and electric motors, and a gas ignition assembly with a cylinder-shaped flame throwing head, and convenient for hanging on an overhead wire so as to quickly deice with combined function of heating power and mechanical force. The invention is suitable for deicing to various transmit electricity and communication overhead wires in any severe weather and geographical environment, capable of standing by on the overhead wires during a long time. Repeated works are remote-controlled by human. The invention is able to coat ice release agent on the overhead wires preliminarily such that it is not easy to freeze, and easy to clear even freezing.
Description
Technical field
The facility that freeze on the aerial cable are closed and remove in the present invention.
Background technology
At present built on stilts various transmissions of electricity and communication cable easily freeze in the bad weather of freezing sleet is arranged, and can make line bar and tower not survey heavy burden and ruin as untimely removing, causing to have a power failure and stop news, also can cause enormous economic loss.Now still do not have the facility that are applicable to the aerial cable deicing, can only beat deicing to aerial cable by the people, work efficiency is very little, and especially people's operation of can't reaching the standard grade when steep hills district aerial cable is big gradient and moves towards can only watch that it ruins.Therefore China cause large-area power-cuts and stop news at the beginning of 2008, suffers the massive losses that is difficult to estimate.Therefore still need and want a kind of deicing machine for aerial cable that can in the bad weather of freezing sleet and various geographical environment, can be installed in deicing on the aerial cable easily.
Summary of the invention
First purpose of the present invention provides a kind of deicing machine for aerial cable, single or the band line-spacing that is used to transmit electricity keeps four parallel cable of support and the communication cable that band is hung cable wire, when freezing in its bad weather to specified degree at freezing sleet, no matter be or the mountain area can both be loaded on this aerial cable deicing timely and effectively quickly and easily in the Plain.
Second purpose of the present invention provides a kind of can awaiting orders for a long time on aerial cable, it carries out the deicing machine for aerial cable of deicing operation at ground remote control by the people.In the bad weather of continuous freezing sleet, can make people needn't go up tower installation deicing machine for aerial cable continually and carry out the deicing operation.
The 3rd purpose of the present invention is that deicing machine for aerial cable can attach an ice-sticking ice agent coating machine, can in advance the ice-sticking ice agent be coated on the aerial cable, makes it not-easy-to-freeze, even tied ice, easily is not eliminated owing to can not be bonded on the aerial cable.
First purpose of the present invention is achieved in that
Deicing machine for aerial cable can be hooked on the icing aerial cable easily by one, has the gas ignition assembly of tubular firn-jet head to constitute along its one of drag device traction of creeping, and is in operation to remove ice on it according to heating power and mechanical force comprehensive function.The control unit assembly that battery, motor, worm reduction gear and band remote signal recipient are arranged in the casing of drag device; the driving shaft that links to each other with worm reduction gear through cog belt or chain is arranged at casing top; there is the crawling wheel that is attached thereto in the casing outside; can be hooked on easily on the aerial cable; its below has the combination of electromagnet regulating wheel can upwards prop up this aerial cable; make drag device firmly along its operation, when it is big gradient and moves towards, not only can not skid especially, but and shutting down the fashion self-locking.The remote signal recipient is contained in the forward and backward side of drag device and initiating terminal is convenient in the bottom surface, and Zhongdao end and ground staff control, and there is handle aperture at the place in the middle of the casing top, is convenient for carrying and to the lifting of high vacancy.Casing should be used the engineering plastics manufacturing, and battery should be used lithium battery, but weight reduction.The gas ignition assembly is contained in drag device the place ahead, its fuel gas bottle is contained in the drag device casing, there is the opening of perforation at tubular firn-jet head and crawling wheel homonymy place, are convenient to collude hang when installing entangle aerial cable, and this opening part has hush panel, seal the tubular firn-jet head in use, so that normally heat, there is ice-cutter tubular firn-jet head front end top, and two side edge outwards below tilts, middle blade is upwards provoked, and in use can be heated and in the easier incision ice and open ice.Deep bead is being adorned in the ice-cutter front, the breach that matches with aerial cable is arranged in the middle of it, can prevent the wind effect flame that blows by the place ahead, it should use resistant to elevated temperatures soft plastic sheet to make, and is convenient to be installed on the aerial cable the articulated weather board in tubular firn-jet head front end below, its lower end is heavier, in use force its upper end to touch all the time below the aerial cable, the frozen water that melts is derived, ensure and normally heat.
Touch aerial cable for preventing that the ice-cutter blade is in operation, the blade lower end is an arc-shaped curved surface to the back lower place in the middle of the ice-cutter, can contact with aerial cable.
For preventing that remaining ice from entering the tubular firn-jet head below aerial cable, there is outside projection the two sides of weather board hinged place, and it can only be receded limitedly, and the ice device is scraped in the front of its upper end, residual ice can be wiped off.
Because hanging communication cable with cable wire at present is that the many cables in chaotic ground hang over on the single line bar, this deicing machine for aerial cable is installed in inconvenience, so should earlier it be integrated bunchy, and change former helical form steel wire hanger rope hook into laminar hanger rope hook, move in order to this deicing machine for aerial cable.
When being used for that line-spacing kept the parallel transmission of electricity aerial cable deicing of four of support, should distinguish two cables about homonymy of operation simultaneously, the drag device front end is adorned the gas ignition assembly of two cover band wound packages firn-jet heads corresponding to two cables, there is guide plate its tubular firn-jet head rear and front end, hush panel is rotated along its periphery, one side that the hush panel front end edge is opened has one section to be oblique unfilled corner, there is a balancing weight that protrudes its back upper place, because of making hush panel, action of gravity is normally off, when its this unfilled corner place in service touches line-spacing maintenance support, hush panel can be made progress push-jump and be crossed line-spacing maintenance support, goes to closed state because of the fast sagging hush panel that drives of counterweight thereupon.
Such realization of second purpose of the present invention:
Deicing machine for aerial cable as described above, all adorn the gas ignition assembly and the tubular firn-jet head of remote-controlled igniting, extinguishing in the drag device rear and front end, a retaining snow cover is adorned in the drag device top, it is loaded between two line towers, awaits orders behind the aerial cable and do igniting by the command adapted thereto that the people sends and heat, back and forth move deicing and flame-out work such as await orders.Retaining snow cover makes it move the parts place during awaiting orders is not had ice and snow, driveaway operation when being beneficial to initialization.
When being used to keep the aerial cable of support with line-spacing, the hush panel two ends of tubular firn-jet head all will be established oblique unfilled corner in the open place, all can cross line-spacing when making its way traffic and keep support.
The 3rd purpose of the present invention by following realization:
Liquid reserve tank of adorning the direct current tubing pump and the ice-sticking ice agent being housed is contained in the drag device rear end and is electrically connected, one has the bearing material groove of the support of long groove shape screw to be contained in the liquid reserve tank top through screw, adjustable-height, its bottom surface tilts, lower end is communicated with liquid reserve tank through flexible pipe, the material scraping plate that can match with aerial cable garden cylinder is being adorned in the inboard, rear and front end, one is coated with sheet and is contained in its top through drag device, the material scraping plate that can match with aerial cable garden cylinder is also being adorned in the inboard, rear and front end, a rear end top and flat nozzle is arranged, its outside links to each other with the tubing pump delivery outlet through flexible pipe, the ice-sticking ice agent can be sprayed onto on this material scraping plate and to aerial cable and under drop down, through the material scraping plate at this place of bearing material groove that its blade coating is even again, unnecessary ice-sticking ice agent is flowed back to liquid reserve tank through flexible pipe again.Need on the online tower of people initially during use, stop and it is crossed the line tower going to the hypomere cable and reworking.
In sum, visible the present invention is simple in structure, and cost is low, and is safe in utilization effective, easily implements.Specify the present invention below in conjunction with drawings and Examples.
Description of drawings
Fig. 1 is the schematic diagram when the deicing machine for aerial cable operation of broken section is arranged;
Fig. 2 be Fig. 1 A-A to cutaway view;
Fig. 3 is the partial left side view of Fig. 1;
Fig. 4 is the schematic diagram of ice-cutter;
Fig. 5 is the left view of Fig. 4;
Fig. 6 is that the B-B of Fig. 5 is to cutaway view;
The schematic diagram of Fig. 7 deep bead;
Fig. 8 is the partial left side view of deicing machine for aerial cable operation when the band line-spacing keeps four parallel aerial cables of support;
Fig. 9 is the schematic diagram of the tubular firn-jet head among Fig. 8;
Figure 10 is the left view of Fig. 9;
Figure 11 is the schematic diagram that ice-sticking ice agent coating machine is loaded on the deicing machine for aerial cable rear end.
Among the figure
Crawling wheel 8 regulating wheels 9 retaining snow covers 10 driving shafts 11 nutted rods 12 electric machine supports 13 reductor supports 14 fore-stocks 15 electromagnet 16 lithium batteries 17 direct current machines 18 remote signal recipients 19 control unit assemblies 20 worm reduction gears 21 before 5 side doors, the 6 back crawling wheels 7 of 4 back doors, 1 casing 2 Box Covers, 3 Qianmens, 22 sprocket wheels 23,24 chains, 25 hinges, 26 door bolts, 27 bearing pins, 28 screws, 29 adapter sleeves 30,31 nuts, 32 ice-cutters, 33 deep beads, 34 weather boards 35 are scraped ice device 36 tubular firn-jet heads 37 hush panel 38 clamps 39 heat insulating mattresss 40 gas ignition assemblies 41 flexible pipes 42 fuel gas bottle 43 aerial cables 44 ice 45 tubular firn-jet heads 46 guide plates 47 hush panel 48 line-spacings and are kept support 49 stake bodies 50 liquid reserve tanks 51 tubing pumps 52 supports 53 bearing material grooves 54 wing nuts 55 flexible pipes 56 material scraping plates 57 to be coated with sheet 58 material scraping plates 59 flat type nozzle 60 flexible pipes 61 ice-sticking ice agent 62 supports 63 bracing pieces
Concrete enforcement
Press Fig. 1, Fig. 2 and shown in Figure 3, make casing (1) with engineering plastics, Box Cover (2), Qianmen (3), back door (4), side door (5), back crawling wheel (6), preceding crawling wheel (7), regulating wheel (8) and retaining snow cover (9), make driving shaft (10) with steel, nutted rod (11), electric machine support (12), reductor support (13) and fore-stock (14), purchase electromagnet (15), lithium battery (16), direct current machine (17), the control unit assembly (19) that contains remote signal recipient (18), worm reduction gear (20), sprocket wheel (21) and (22), chain (23) and (24), hinge (25) and door bolt (26), use bearing pin (27) and screw (28) to install electromagnet (15) successively, nutted rod (11), the combination of regulating wheel (8) and casing (1), with electric machine support (12), screw (28) installs direct current machine (17), installing worm reduction gear (20) back with screw (28) and reductor support (13) links to each other with direct current machine (17) with adapter sleeve (29), two driving shafts (10) are installed two sprocket wheels (22) and have connected chain (24) postposition to go into behind the relevant position on casing (1) top again through chain (23) and link to each other with sprocket wheel (21) on the worm reduction gear (20), install back door (4) with screw (28), control unit assembly (19), and with use screw (28) to install Qianmen (3) again after direct current machine (17) is electrically connected, with screw (28), nut (30) installs Box Cover (2), side door (5), install door bolt (26) after hinge (25) is loaded on the casing (1), with nut (30) back crawling wheel (6) and preceding crawling wheel (7) are contained in respectively on the square spindle nose of two driving shafts (10), so far drag device is partly assembled and is finished, and installs at last when retaining snow cover (9) is treated the complete machine assembling.The crawling wheel of two drivings skids in the time of can preventing to move.
Press the also available high-quality steel of the ice-cutter (32) of Fig. 4, Fig. 5 and manufacturing carbide alloy shown in Figure 6 and make both sides and middle blade, riveting becomes solid tool again behind broken hard and sharpening.
Press Fig. 1 and manufacturing deep bead shown in Figure 7 (33):
The centre is a ptfe sheet, and both sides are sheet metal, form through riveted.
Press Fig. 1 and manufacturing weather board shown in Figure 3 (34):
Make main body with spheroidal graphite cast-iron or malleable cast iron, soket head cap screw nut top sharpening generation is done scrape ice device (36), through nut (30) ptfe sheet is fixed on the main body again and gets final product.
Make tubular firn-jet head (36) by Figure 1 and Figure 2, the articulated hush panel of opening part (37) that its side connects, its upper front end is being adorned ice-cutter (32) and deep bead (33) below articulated weather board (34) with screw (28).
By Figure 1 and Figure 2, with heat insulating mattress (39) tubular firn-jet head (36) is linked to each other with casing (1) and Box Cover (2) through screw (28) with fore-stock (14), clamp (38), install the gas ignition assembly (40) of purchase with screw (28), with flexible pipe (41) fuel gas bottle (42) in itself and the casing (1) is connected, use screw (28) to install the deicing machine for aerial cable that retaining snow cover (9) is promptly finished the present invention at last.
Ice (44) removing on a bit of aerial cable (43) at this deicing machine for aerial cable place will be installed, then with it during by shown in Figure 1 use earlier
Be hooked on this place, managed hush panel (37) and deep bead (33), start electromagnet (15) and make regulating wheel (8) push against aerial cable (43), make its operation get final product deicing after igniting is heated.Zhongdao end line tower place has the people to wait in advance, restarts going to next section aerial cable after its shutdown again.Move towards section operation as be big gradient at aerial cable, should flow in the tubular firn-jet head (36) with the frozen water of avoiding melting by high-end to the bottom operation.
Be used to keep its front and back end of tubular firn-jet head (45) of ceases to be busy cable de-icing machine of four parallel aerial cables of support that guide plate (46) is all arranged by Fig. 9 and manufacturing shown in Figure 10 with line-spacing, wherein adorning hush panel (47), rotatable, its rear end has hooked projection to contact with guide plate (46) and makes it can only go to the position that needs, for making this tubular firn-jet head (45) keep support (48) at the round equal line-spacing of crossing in service, its hush panel (47) two ends are oblique unfilled corner along the open place, its back upper place has an outwards outstanding balancing weight through screw (28) bracing piece (63) to be installed on the top, and its front end is installed with ice-cutter (32) and deep bead (33) through screw (28).
By shown in Figure 8, casing (1) top is increased, on corresponding height, overlap gas ignition assembly (40) and tubular firn-jet head (45) and whole annex by adorning second through stake body (49), abduction projection with holes is made so that tubular firn-jet head (45) and whole annex to be installed in its below, and this deicing machine for aerial cable promptly can be used for having kept four parallel cables deicing of support with line-spacing.
Adorn a remote-controlled igniting of cover and flame-out gas ignition assembly (40) in deicing machine for aerial cable rear end as shown in Figure 1 in addition and it can be installed on the place's deicing of awaiting orders for a long time on the aerial cable (43) with the tubular firn-jet head of tubular firn-jet head (36) the aperture position symmetry of front end.The people heats in its igniting of ground remote control during use, shuts down when moving deicing to Zhongdao line tower and awaits orders, because of being its capstan head on the unmanned online tower, so can only come and go operation on the same cable between two line towers.The control unit assembly of buying should be able to be monitored the electric weight of battery at any time, when should reporting to the police so that in time change battery to controlling the remote controller that the people holds down that it reaches safe electric weight, does not make it shut down between two line towers and can not return in limited time.
By shown in Figure 11, liquid reserve tank (50) be installed in the rear end of casing (1) with the miniature tubing pump of direct current (51) and be electrically connected, the support of belt length slotted eye (52) is welded in bearing material groove (53) bottom, link to each other with liquid reserve tank (50) and adjustment height through screw (28) and wing nut (54), bearing material groove (53) bottom surface tilts, the place, bottom has flexible pipe (55) to link to each other with liquid reserve tank (50), its inboard, two ends is being adorned and can kissed the material scraping plate (56) of the polyurethane sheet making that connects in aerial cable (43) garden cylinder, being coated with sheet (57) is contained on the Box Cover (2) through support (62) and screw (28), the material scraping plate (58) identical with material scraping plate (56) also adorned in its inboard, two ends, still there is flat nozzle (59) rear end, its outer end links to each other through the output of flexible pipe (60) with tubing pump (51), in liquid reserve tank (50), inject ice-sticking ice agent (61) during use, its can by spray the material scraping plate (58) at this place go up and the aerial cable that arrives (43) and under drop down, the material scraping plate (56) at this place is coated with all below aerial cable (43) in bearing material groove (53) again, and unnecessary ice-sticking ice agent (61) can be flowed back to liquid reserve tank (50) by flexible pipe (60).
Claims (6)
1 one kinds of deicing machine for aerial cable, can be hooked on its drag device of creeping of icing aerial cable upper edge by one, one of traction has the gas ignition assembly of tubular firn-jet head to constitute, it is characterized in that in the drag device casing battery being arranged, motor, the control unit assembly of worm reduction gear and band remote signal recipient, the driving shaft that links to each other with worm reduction gear through cog belt or chain is arranged at casing top, there is the crawling wheel that links to each other with driving shaft in the casing outside, there is the combination of electromagnet regulating wheel its below, the gas ignition assembly is contained in the drag device front end, there is the opening of perforation at its tubular firn-jet head and crawling wheel homonymy place, this opening part has hush panel, tubular firn-jet head front end has ice-cutter, its front end is being adorned deep bead, its articulated weather board in below.
2. deicing machine for aerial cable as claimed in claim 1, its drag device front end is adorned the gas ignition assembly of two cover band tubular firn-jet heads corresponding to two cables, there is guide plate its tubular firn-jet head rear and front end, hush panel is rotated along its periphery, one side that the hush panel front end edge is opened has one section to be oblique unfilled corner, and there is a balancing weight that protrudes its back upper place.
3. deicing machine for aerial cable as claimed in claim 2, its drag device rear and front end are all adorned the gas ignition assembly of the band tubular firn-jet head that can shake the control igniting, extinguishing.
4. deicing machine for aerial cable as claimed in claim 2 is adorned a retaining snow cover above drag device.
5. as the deicing machine for aerial cable of claim 1 or claim 2, the blade lower end is an arc-shaped curved surface to the back lower place in the middle of its ice-cutter.
6. deicing machine for aerial cable as claimed in claim 1, liquid reserve tank of adorning the direct current tubing pump and the ice-sticking ice agent being housed is contained in the drag device rear end and is electrically connected, one has the bearing material groove of long groove shape screw to be contained in the liquid reserve tank top through screw, adjustable-height, its bottom surface tilts, lower end is communicated with liquid reserve tank through flexible pipe, the material scraping plate that can match with aerial cable garden cylinder is being adorned in the inboard, rear and front end, one is coated with sheet and is contained in its top through drag device, the material scraping plate that can match with aerial cable garden cylinder is also being adorned in the inboard, rear and front end, a rear end top and flat nozzle is arranged, its outside links to each other with the tubing pump delivery outlet through flexible pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810052563XA CN101320899A (en) | 2008-03-28 | 2008-03-28 | Deicing machine for aerial cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810052563XA CN101320899A (en) | 2008-03-28 | 2008-03-28 | Deicing machine for aerial cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101320899A true CN101320899A (en) | 2008-12-10 |
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ID=40180800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200810052563XA Pending CN101320899A (en) | 2008-03-28 | 2008-03-28 | Deicing machine for aerial cable |
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| Country | Link |
|---|---|
| CN (1) | CN101320899A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101777741A (en) * | 2010-03-08 | 2010-07-14 | 北京交通大学 | Rotating power transmission line deicer |
| CN102228876A (en) * | 2011-07-01 | 2011-11-02 | 北京深浪电子技术有限公司 | Remote control automatic coating robot for preventing icing on transmission line |
| CN101692571B (en) * | 2009-09-30 | 2012-07-04 | 张新华 | Quick cable deicing device and power component thereof |
| CN104078884A (en) * | 2014-06-25 | 2014-10-01 | 国家电网公司 | Two-purpose electrified wire ice removal device |
| CN105514906A (en) * | 2016-01-19 | 2016-04-20 | 林�智 | Automatic cable deicing device and automatic deicing method |
| CN106329450A (en) * | 2016-11-25 | 2017-01-11 | 淅川县电业局 | On-line de-icing device for power transmission line |
| CN106410725A (en) * | 2016-11-25 | 2017-02-15 | 国网河南省电力公司平顶山供电公司 | Power cable deicing device |
| CN106410724A (en) * | 2016-11-25 | 2017-02-15 | 淅川县电业局 | Power transmission and transformation line crystal cleaning device |
| CN107181229A (en) * | 2017-06-14 | 2017-09-19 | 深圳市安思科电子科技有限公司 | A kind of efficient power cable deicing equipment |
| CN109759366A (en) * | 2019-03-04 | 2019-05-17 | 安徽理工大学 | A kind of novel high-altitude steel cable ice remover group |
| CN111786346A (en) * | 2020-07-31 | 2020-10-16 | 苗竹 | Communication cable for high-tolerance laying |
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2008
- 2008-03-28 CN CNA200810052563XA patent/CN101320899A/en active Pending
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101692571B (en) * | 2009-09-30 | 2012-07-04 | 张新华 | Quick cable deicing device and power component thereof |
| CN101777741B (en) * | 2010-03-08 | 2011-11-30 | 北京交通大学 | rotating power transmission line deicer |
| CN101777741A (en) * | 2010-03-08 | 2010-07-14 | 北京交通大学 | Rotating power transmission line deicer |
| CN102228876A (en) * | 2011-07-01 | 2011-11-02 | 北京深浪电子技术有限公司 | Remote control automatic coating robot for preventing icing on transmission line |
| CN102228876B (en) * | 2011-07-01 | 2013-09-18 | 北京深浪电子技术有限公司 | Remote control automatic coating robot for preventing icing on transmission line |
| CN104078884A (en) * | 2014-06-25 | 2014-10-01 | 国家电网公司 | Two-purpose electrified wire ice removal device |
| CN107248714A (en) * | 2016-01-19 | 2017-10-13 | 林�智 | The ice self-removing method of cable automatic deicer |
| CN105514906A (en) * | 2016-01-19 | 2016-04-20 | 林�智 | Automatic cable deicing device and automatic deicing method |
| CN107248714B (en) * | 2016-01-19 | 2018-09-14 | 唐平娥 | The ice self-removing method of cable automatic deicer |
| CN106410725A (en) * | 2016-11-25 | 2017-02-15 | 国网河南省电力公司平顶山供电公司 | Power cable deicing device |
| CN106410724A (en) * | 2016-11-25 | 2017-02-15 | 淅川县电业局 | Power transmission and transformation line crystal cleaning device |
| CN106410725B (en) * | 2016-11-25 | 2018-01-26 | 国网河南省电力公司平顶山供电公司 | A kind of electric power cable deicer |
| CN106410724B (en) * | 2016-11-25 | 2018-02-06 | 淅川县电业局 | One kind, which is sent, becomes electric line crystal cleaning plant |
| CN106329450A (en) * | 2016-11-25 | 2017-01-11 | 淅川县电业局 | On-line de-icing device for power transmission line |
| CN107181229A (en) * | 2017-06-14 | 2017-09-19 | 深圳市安思科电子科技有限公司 | A kind of efficient power cable deicing equipment |
| CN107181229B (en) * | 2017-06-14 | 2018-10-23 | 上海申远高温线有限公司 | A kind of efficient power cable deicing equipment |
| CN109759366A (en) * | 2019-03-04 | 2019-05-17 | 安徽理工大学 | A kind of novel high-altitude steel cable ice remover group |
| CN111786346A (en) * | 2020-07-31 | 2020-10-16 | 苗竹 | Communication cable for high-tolerance laying |
| CN111786346B (en) * | 2020-07-31 | 2021-11-30 | 苗竹 | Communication cable for high-tolerance laying |
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Open date: 20081210 |