CN203734215U - Overhead cable-laying tractor and special lifting tool thereof - Google Patents
Overhead cable-laying tractor and special lifting tool thereof Download PDFInfo
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- CN203734215U CN203734215U CN201420144433.XU CN201420144433U CN203734215U CN 203734215 U CN203734215 U CN 203734215U CN 201420144433 U CN201420144433 U CN 201420144433U CN 203734215 U CN203734215 U CN 203734215U
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- tractor
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- 238000004891 communication Methods 0.000 claims abstract description 17
- 241000272165 Charadriidae Species 0.000 claims description 30
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 7
- 230000005484 gravity Effects 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 23
- 210000003739 neck Anatomy 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 15
- 239000010959 steel Substances 0.000 description 15
- 238000009413 insulation Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 206010016173 Fall Diseases 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
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Abstract
The utility model discloses an overhead cable-laying tractor and a special lifting tool thereof. The tractor comprises a tractor body, traction sheaves driven by a motor, and a hauling rope releasing device, wherein hooks with downward hook mouths are arranged at the upper part of the tractor body; a balance weight part is arranged at the lower part of the tractor body; the lower ends of hook necks of the hooks are connected with the balance weight part; the traction sheaves are horizontally mounted in the hook mouths; batteries are used for supplying power to the motor and the hauling rope releasing device; the drive circuit of the motor and the hauling rope releasing device is connected with a wireless communication module; the wireless communication module is communicated with a remote controller; the motor, the hauling rope releasing device, the batteries, the drive circuit of the motor and the hauling rope releasing device, and the wireless communication module are mounted on the tractor body respectively. The utility model further discloses a special lifting tool for the overhead cable-laying tractor. The problem of spanning for the first time of a tension-free cable-laying spanning device is solved through the wireless-controlled overhead cable-laying tractor, the influence of the construction site environment on the cable-laying construction is greatly overcome, the difficulty and cost of the cable-laying construction are effectively lowered, and the construction efficiency is improved.
Description
Technical field
The utility model relates to electric power and communication line construction equipment field, is specifically related to built on stilts cable laying tractor and Special-purpose lifting instrument thereof.
Background technology
In power line construction and communication optical cable construction process, often need to cross over the obstacles such as important navigation channel, railway, sealing highway, house, green house of vegetables, crossed construction building site, in a lot of situations, need to obstacle place suspend for a long time, the relevant cooperating such as road closure, relevant coordination formality is various, negotiation difficulty is large, and often require seriously to incur loss through delay the duration because being difficult to reach an agreement, production cost is also therefore and for a long time high.
And the construction of traditional cable laying is by setting up scaffold mostly, adopt the construction of belt tension unfolding formula to reach cable leap object, have that cost is high, the problem of length consuming time, some construction site does not have the condition of built construction as both sides, navigation channel, and belt tension unfolding formula is constructed, and to be transported to the difficulty of construction site larger for required hitching machinery; The belt tension of long distance is crossed over very strictly to construction machinery and construction technical requirement in addition, careless slightlyly will cause the serious consequence that cannot retrieve; Further, often can run into external interference in work progress, this just requires before construction finishes, and must someone nurse each point, to ensure safety.
Chinese utility model patent " 201320114678.3 " discloses without tension force cable laying crossover device, by series connection pull rope, the elastic insulated ring or the insulation coaster that are connected in existing high-tension line or carrying steel cable are connected to form to an aerial channels, with cable strop drive construction cable pass through aerial channels, be not subject to the impact of the below environment of crossing over, the time that has reduced co-ordination, production cost significantly reduces; This technical scheme needs ground staff to draw front end to destination to make elastic insulated ring or insulation coaster be uniformly distributed formation aerial channels series connection pull rope, the traction problems first of cable laying construction is unresolved, still can be subject to the environmental impact of job site, some are special, complex barrier even cannot be constructed.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of built on stilts cable laying tractor and Special-purpose lifting instrument thereof, can solve the existing series connection pull rope without tension force cable laying crossover device draws first and needs ground staff to be pulled to destination, cause still can being subject to the environmental impact of job site, the problem that some are special, complex barrier even cannot be constructed.
The utility model is achieved through the following technical solutions:
Built on stilts cable laying tractor, comprises car body, passes through motor-driven traction sheave, and pull rope releasing device, described vehicle body upper portion is the downward hook of the mouth of hook, described car body bottom is counterweight part, and the neck of hook lower end of described hook connects counterweight part, and described traction sheave level is arranged in the mouth of hook; Described motor and pull rope releasing device are by powered battery, and the drive circuit of described motor and pull rope releasing device is connected with wireless communication module, and described wireless communication module is communicated by letter with remote controller; Drive circuit and the wireless communication module of described motor, pull rope releasing device, battery, motor and pull rope releasing device are arranged on respectively on car body.
Two upper and lower parallel cross bars that described hook is connected respectively bill bar, neck of hook bar top by the bill bar vertically arranging, neck of hook bar and two ends form; Described neck of hook bar lower end connect counterweight part, the length of described bill bar is less than the length of neck of hook bar, in bill bar lower end to forming cable introducing port between counterweight part; Described traction sheave level is arranged between the bill bar, neck of hook bar of cross bar below, and its wheel shaft two ends are rotationally connected with bill bar, neck of hook bar respectively.
Described hook and traction sheave are respectively equipped with two groups, and the neck of hook bars of described two groups of hooks are arranged at respectively the two ends of counterweight part the same side, and the bill bar of two groups of hooks is positioned at the same side of neck of hook bar, between the cross bars of described two groups of hooks, are connected with longitudinal anchorage bar; On the wheel shaft of described two groups of traction sheaves, be respectively equipped with driven gear, the driving gear on described two groups of driven gears and motor shaft is by chain drive.
The top of described hook is also provided with guiding herringbone beam, and the curb girder length that described guiding herringbone beam top extends to bill masthead end is greater than the curb girder length that extends to neck of hook masthead end; Described bill bar bottom and neck of hook pole pair answer the position of bill bar bottom to be respectively equipped with the guide ribs of extending to the grooving of traction sheave.
Described counterweight part is battery case, described motor is fixed on battery case upper surface, described battery is positioned over battery case inner chamber, the drive circuit of described motor and pull rope releasing device and wireless communication module are arranged at the circuit box of battery case one end, the other end of described battery case is connected with end cap, and pull rope releasing device is arranged at end cap outer wall; The neck of hook lower end of described hook is connected in a side of battery case.
Described pull rope releasing device comprises and is arranged at pull rope alignment pin, the weight alignment pin of end cap outer wall and is suspended on the weight on weight alignment pin, and pull rope one end is connected in weight through after pull rope alignment pin.
Described pull rope alignment pin comprise be fixed on end cap outer wall the key seat that is provided with through hole, be enclosed within the annulus on key seat and be inserted in the pin rod in through hole, described pin rod length is greater than the diameter of annulus, described pin rod one end is provided with connecting hole, pull rope one end, through passing the connecting hole on pin rod after annulus, then connects weight again.
Described weight alignment pin is made up of horizontally disposed electromagnet and two pin plates that vertically arrange, and described pin plate is provided with pin-and-hole, and after the iron core of electromagnet stretches out, successively through the pin-and-hole on two pin plates, weight hangs on the iron core between two pin plates.
The Special-purpose lifting instrument of above-mentioned built on stilts cable laying tractor, comprises length, width, is slightly larger than highly respectively the elevator bucket of tractor car body counterweight part length, width, height, and described elevator bucket has horn-type opening; Described elevator bucket two ends are connected with respectively lifting insulating cord, and described elevator bucket one middle side part is also connected with the elevation angle and controls insulating cord.
Described elevator bucket two ends are also respectively equipped with center of gravity and regulate knob.
The utility model has the advantage of:
One, solve the leap problem first without tension force cable laying crossover device by the built on stilts cable laying tractor of controlled in wireless, greatly overcome the impact of job site environment on cable laying construction, effectively reduce difficulty and the cost of cable laying construction, improve efficiency of construction;
Two, built on stilts cable laying tractor is simple in structure, and small volume and less weight is easy to carry, maintenance, use and maintenance;
Three, easily install and take off built on stilts cable laying tractor by insulation ropes and elevator bucket from ground not contact conductive carrier mode, be convenient to charged repairing operation under special circumstances, guarantee the fail safe of cable laying construction.
Brief description of the drawings
Fig. 1 is the structural representation of built on stilts cable laying tractor.
Fig. 2 is the counterweight part A direction view of Fig. 1.
Fig. 3 is hoisting tool structural representation.
Wherein, the 1st, remote controller, the 2nd, circuit box, the 3rd, the antenna of wireless communication module, the 4th, battery case, the 5th, motor, the 6th, end cap, the 7th, driving gear, the 8th, chain, the 9th, driven gear, the 10th, bill bar, the 11st, traction sheave, the 12nd, guiding herringbone beam, the 13rd, neck of hook bar, the 14th, guide ribs, the 15th, cross bar, the 16th, longitudinal anchorage bar, the 19th, electromagnet, the 20th, pin plate, the 21st, weight, the 22nd, pin rod, the 23rd, annulus, the 24th, pull rope, the 25th, elevator bucket, the 26th, promote insulating cord, the 27th, center of gravity regulates knob, the 28th, insulating cord is controlled at the elevation angle, the 29th, carrying steel cable or wire.
Embodiment
Built on stilts cable laying tractor as depicted in figs. 1 and 2, comprise car body, the traction sheave 11 driving by motor 5, and pull rope releasing device, described motor 5 is reducing motor, the grooving cross section of described traction sheave 11 is trapezoidal, its material is rubber or flexible polyurethane, form by casting glue or encapsulate processes, under Action of Gravity Field, traction sheave 11 forms out-of-flatness rough contact surface with carrying steel cable or wire 29 laminatings, flexible rough contact surface so had both improved the coefficient of friction of system, can more effectively reduce again the wear-out failure of traction sheave 11 to carrying steel cable or wire 29, described vehicle body upper portion is two groups of hooks that the mouth of hook is downward, and described car body bottom is the battery case 4 as counterweight part, two upper and lower parallel cross bars 15 that described hook is bolted respectively bill bar 10, neck of hook bar 13 tops by the bill bar 10 vertically arranging, neck of hook bar 13 and two ends form, and described bill bar 10 and neck of hook bar 13 are made up of channel-section steel, described traction sheave 11 levels are arranged between the bill bar 10, neck of hook bar 13 of cross bar 15 belows, and its wheel shaft two ends are rotationally connected by bearing and bearing pedestal and bill bar 10, neck of hook bar 13 respectively, the neck of hook bar 13 of described two groups of hooks is bolted to connection respectively in the two ends of battery case 4 the same sides, and the bill bar 10 of two groups of hooks is positioned at the same side of neck of hook bar 13, the length of described bill bar 10 is less than the length of neck of hook bar 13, to forming cable introducing port between counterweight part, between the cross bar 15 of described two groups of hooks, be also connected with longitudinal anchorage bar 16 in bill bar 10 lower ends, on the wheel shaft of described two groups of traction sheaves 11, be respectively equipped with driven gear 9, described two groups of driven gears 9 pass through chain 8 transmissions with the driving gear 7 on motor 5 axles, the top of described hook is also provided with guiding herringbone beam 12, and the curb girder length that described guiding herringbone beam 12 tops extend to bill bar 10 tops is greater than the curb girder length that extends to neck of hook bar 13 tops, the position of the corresponding bill bar of described bill bar 10 bottoms and neck of hook bar 13 10 bottoms is respectively equipped with the guide ribs 14 of extending to the grooving of traction sheave 11.
Described motor 5 and pull rope releasing device are by powered battery, and the drive circuit of described motor 5 and pull rope releasing device is connected with wireless communication module, and described wireless communication module is communicated by letter with remote controller 1; Described motor 5 is bolted on battery case 4 upper surface middle part, described battery is positioned over battery case 4 inner chambers, the drive circuit of described motor 5 and pull rope releasing device and wireless communication module are arranged at the circuit box 2 of battery case 4 one end, the other end of described battery case 4 is connected with end cap 6, pull rope releasing device is arranged at end cap 6 outer walls, and Circuit tuning box 2 is convenient to control battery case 4 barycentre steadiness with the weight of end cap 6.
Described pull rope releasing device comprises and is arranged at pull rope alignment pin, the weight alignment pin of end cap 6 outer walls and is suspended on the weight 21 on weight alignment pin, and pull rope 24 one end are connected in weight 21 through after pull rope alignment pin.
Wherein, described pull rope alignment pin comprise be fixed on end cap 6 outer walls the key seat that is provided with through hole, be enclosed within the annulus 23 on key seat and be inserted in the pin rod 22 in through hole, described pin rod 22 length are greater than the diameter of annulus 23, described pin rod 22 one end are provided with connecting hole, pull rope 24 one end, through passing the connecting hole on pin rod 22 after annulus 23, then connect weight 21 again; Described weight alignment pin is made up of horizontally disposed electromagnet 19 and two pin plates 20 that vertically arrange, described pin plate 20 is provided with pin-and-hole, after stretching out, passes successively the iron core of electromagnet 19 pin-and-hole on two pin plates 20, on the iron core that weight 21 hangs between two pin plates 20.
The Special-purpose lifting instrument of built on stilts cable laying tractor as shown in Figure 3, comprises length, width, is slightly larger than highly respectively the elevator bucket 25 of tractor car body counterweight part length, width, height, and described elevator bucket 25 has horn-type opening; Described elevator bucket 25 two ends are connected with respectively and promote insulating cord 26, and described elevator bucket 25 1 middle side parts are also connected with the elevation angle and control insulating cord 28; Described elevator bucket 25 two ends are also respectively equipped with center of gravity and regulate knob 27.
When cable laying construction, will make somebody a mere figurehead cable laying tractor and put into elevator bucket 25, regulate knob 27 to make elevator bucket 25 barycentre steadiness by center of gravity, the lifting insulating cord 26 at elevator bucket 25 two ends is striden across to carrying steel cable or wire 29 from the same side upthrow, and the one end that pulls lifting insulating cord 26 to hang down is risen the elevator bucket 25 that carries built on stilts cable laying tractor, in the time that built on stilts cable laying tractor top arrives carrying steel cable or wire 29 position, the curb girder length that extends to bill bar 10 tops due to guiding herringbone beam 12 tops is greater than the curb girder length that extends to neck of hook bar 13 tops, carrying steel cable or wire 29 contact guiding herringbone beam 12 tops extend to the curb girder on bill bar 10 tops, along with the continuation of elevator bucket 25 is risen, carrying steel cable or wire 29 slide to bill bar 10 lateral surfaces along contacted curb girder, then slip into the grooving of traction sheave 11 along guide ribs 14, built on stilts cable laying tractor is laid complete, slowly discharge and promote insulating cord 26 and make elevator bucket 25 ground that falls go back to, terrestrial operation personnel control motor 5 by remote controller 1, make built on stilts cable laying tractor advance or retreat along carrying steel cable or wire 29, in the time that built on stilts cable laying tractor arrives precalculated position, start again the drive circuit of pull rope releasing device by remote controller, electromagnet 19 obtains electric, its iron core retraction is extracted out from the pin-and-hole of pin plate 20, weight 21 falls, one end that pull rope 24 is connected to weight 21 is also reserved with and is slightly larger than carrying steel cable or wire 29 to the length of ground level and is coiled on weight 21, can slow down weight 21 fallings speed on the one hand, being convenient on the other hand ground staff's pulling traction rope 24 extracts pin rod 22 out, annulus 23 departs from key seat, pull rope 24 separates with the car body of built on stilts cable laying tractor, ground staff's manpower or employing associated mechanical pulling traction rope 24 are installed without tension force cable laying crossover device, thereby solve the leap problem first without tension force cable laying crossover device.
In the time that needs take off built on stilts cable laying tractor, by the lifting insulating cord 26 at elevator bucket 25 two ends from built on stilts cable laying tractor two ends, one side upthrow of carrying steel cable or wire 29 strides across carrying steel cable or wire 29, pull lifting insulating cord 26 to make elevator bucket 25 increase until the battery case 4 of built on stilts cable laying tractor enters elevator bucket 25, then in continuing to pull lifting insulating cord 26, pulling the elevation angle to control insulating cord 28 makes elevator bucket 25 and built on stilts cable laying tractor roll tiltedly to neck of hook bar 13 places, make to carry the grooving that steel cable or wire 29 depart from traction sheave 11, and skid off cable introducing port along guide ribs 14, in the time that carrying steel cable or wire 29 arrive bill bar 10 lateral surface, slowly discharge and promote insulating cord 26, make elevator bucket 25 and built on stilts cable laying tractor fall go back to ground.
Claims (10)
1. built on stilts cable laying tractor, it is characterized in that: the traction sheave (11) that comprises car body, drives by motor (5), and pull rope releasing device, described vehicle body upper portion is the downward hook of the mouth of hook, described car body bottom is counterweight part, the neck of hook lower end of described hook connects counterweight part, and described traction sheave (11) level is arranged in the mouth of hook; Described motor (5) and pull rope releasing device are by powered battery, and the drive circuit of described motor (5) and pull rope releasing device is connected with wireless communication module, and described wireless communication module is communicated by letter with remote controller (1); Drive circuit and the wireless communication module of described motor (5), pull rope releasing device, battery, motor (5) and pull rope releasing device are arranged on respectively on car body.
2. built on stilts cable laying tractor as claimed in claim 1, is characterized in that: two upper and lower parallel cross bars (15) that described hook is connected respectively bill bar (10), neck of hook bar (13) top by the bill bar (10) vertically arranging, neck of hook bar (13) and two ends form; Described neck of hook bar (13) lower end connect counterweight part, the length of described bill bar (10) is less than the length of neck of hook bar (13), in bill bar (10) lower end to forming cable introducing port between counterweight part; Described traction sheave (11) level is arranged between the bill bar (10), neck of hook bar (13) of cross bar (15) below, and its wheel shaft two ends are rotationally connected with bill bar (10), neck of hook bar (13) respectively.
3. built on stilts cable laying tractor as claimed in claim 2, it is characterized in that: described hook and traction sheave (11) are respectively equipped with two groups, the neck of hook bar (13) of described two groups of hooks is arranged at respectively the two ends of counterweight part the same side, and the bill bar (10) of two groups of hooks is positioned at the same side of neck of hook bar (13), between the cross bar (15) of described two groups of hooks, be connected with longitudinal anchorage bar (16); On the wheel shaft of described two groups of traction sheaves (11), be respectively equipped with driven gear (9), described two groups of driven gears (9) pass through chain (8) transmission with the driving gear (7) on motor (5) axle.
4. make somebody a mere figurehead as claimed in claim 2 or claim 3 cable laying tractor, it is characterized in that: the top of described hook is also provided with guiding herringbone beam (12), the curb girder length that described guiding herringbone beam (12) top extends to bill bar (10) top is greater than the curb girder length that extends to neck of hook bar (13) top; The position of described bill bar (10) bottom and the corresponding bill bar of neck of hook bar (13) (10) bottom is respectively equipped with the guide ribs (14) of extending to the grooving of traction sheave (11).
5. the built on stilts cable laying tractor as described in claim 1 or 2 or 3, it is characterized in that: described counterweight part is battery case (4), described motor (5) is fixed on battery case (4) upper surface, described battery is positioned over battery case (4) inner chamber, the drive circuit of described motor (5) and pull rope releasing device and wireless communication module are arranged at the circuit box (2) of battery case (4) one end, the other end of described battery case (4) is connected with end cap (6), and pull rope releasing device is arranged at end cap (6) outer wall; The neck of hook lower end of described hook is connected in a side of battery case (4).
6. built on stilts cable laying tractor as claimed in claim 5, it is characterized in that: described pull rope releasing device comprises and be arranged at pull rope alignment pin, the weight alignment pin of end cap (6) outer wall and be suspended on the weight (21) on weight alignment pin, pull rope (24) one end is connected in weight (21) through after pull rope alignment pin.
7. built on stilts cable laying tractor as claimed in claim 6, it is characterized in that: described pull rope alignment pin comprise be fixed on end cap (6) outer wall the key seat that is provided with through hole, be enclosed within the annulus (23) on key seat and be inserted in the pin rod (22) in through hole, described pin rod (22) length is greater than the diameter of annulus (23), described pin rod (22) one end is provided with connecting hole, pull rope (24) one end, through passing the connecting hole on pin rod (22) after annulus (23), then connects weight (21) again.
8. built on stilts cable laying tractor as claimed in claim 6, it is characterized in that: described weight alignment pin is made up of horizontally disposed electromagnet (19) and two pin plates (20) that vertically arrange, described pin plate (20) is provided with pin-and-hole, after the iron core of electromagnet (19) stretches out, successively through the pin-and-hole on two pin plates (20), weight (21) hangs on the iron core between two pin plates (20).
9. the Special-purpose lifting instrument of built on stilts cable laying tractor as described in claim 1 ~ 8 any one, it is characterized in that: comprise length, width, be slightly larger than highly respectively the elevator bucket (25) of tractor car body counterweight part length, width, height, described elevator bucket (25) has horn-type opening; Described elevator bucket (25) two ends are connected with respectively and promote insulating cord (26), and described elevator bucket (25) one middle side parts are also connected with the elevation angle and control insulating cord (28).
10. Special-purpose lifting instrument as claimed in claim 9, is characterized in that: described elevator bucket (25) two ends are also respectively equipped with center of gravity and regulate knob (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420144433.XU CN203734215U (en) | 2014-03-28 | 2014-03-28 | Overhead cable-laying tractor and special lifting tool thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420144433.XU CN203734215U (en) | 2014-03-28 | 2014-03-28 | Overhead cable-laying tractor and special lifting tool thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203734215U true CN203734215U (en) | 2014-07-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420144433.XU Expired - Lifetime CN203734215U (en) | 2014-03-28 | 2014-03-28 | Overhead cable-laying tractor and special lifting tool thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203734215U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103872622A (en) * | 2014-03-28 | 2014-06-18 | 国家电网公司 | Overhead cable laying tractor and dedicated lifting tool thereof |
| CN105347250A (en) * | 2015-12-01 | 2016-02-24 | 重庆力缆电线有限责任公司 | Semi-automatic cable lifting frame |
-
2014
- 2014-03-28 CN CN201420144433.XU patent/CN203734215U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103872622A (en) * | 2014-03-28 | 2014-06-18 | 国家电网公司 | Overhead cable laying tractor and dedicated lifting tool thereof |
| CN103872622B (en) * | 2014-03-28 | 2016-06-29 | 国家电网公司 | Built on stilts cable laying tractor and Special-purpose lifting instrument thereof |
| CN105347250A (en) * | 2015-12-01 | 2016-02-24 | 重庆力缆电线有限责任公司 | Semi-automatic cable lifting frame |
| CN105347250B (en) * | 2015-12-01 | 2019-02-26 | 重庆力缆电线有限责任公司 | Semi-automatic cable hoisting frame |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140723 Effective date of abandoning: 20160629 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |