CN102832570B - A kind of heavy in section expanded conductor fixing-line device - Google Patents
A kind of heavy in section expanded conductor fixing-line device Download PDFInfo
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- CN102832570B CN102832570B CN201210249732.5A CN201210249732A CN102832570B CN 102832570 B CN102832570 B CN 102832570B CN 201210249732 A CN201210249732 A CN 201210249732A CN 102832570 B CN102832570 B CN 102832570B
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- 229910052782 aluminium Inorganic materials 0.000 abstract description 11
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Abstract
The invention provides a kind of heavy in section expanded conductor fixing-line device, relate to transmission line construction facility and technical field of construction.This fixing-line device is specially adapted to heavy in section support type high-density polyethylene line expanded conductor and thin geometric pattern circle line twists anchor connection in the construction under tension stringing of aluminum conductor etc. with one heart, meanwhile, also can be used for the anchor connection that the round line in more four layers, heavy in section twists aluminum conductor with one heart.Bearing capacity during fixing-line device anchoring of the present invention is large, does not have slippage, and wire by the structure of retaining part without distortion, surface is without impression; The weight saving of fixing-line device, is convenient to work high above the ground; Good gripping performance is that the anchor connection of heavy in section expanded conductor provides safe and reliable guarantee, solves a great problem that in Poling Construction, expanded conductor clamping Work tool lacks.
Description
Technical field
The invention belongs to transmission line construction facility and technical field of construction, be specifically related to a kind of heavy in section expanded conductor fixing-line device.
Background technology
The corona-resistance properties such as, transmission line capability high for electric pressure is large, high altitude localities have the transmission line of particular/special requirement, under the prerequisite meeting transmission line capability and line project requirement equally, adopt the new structure wire of heavy in section, enlarged-diameter, total weight and the wire division number of wire can be reduced; Reduce steel tower load and construction weight, reduce the project cost of circuit.In stringing process, often adopt the mode that wire crimps aloft, conductor clamping work will aloft complete, like this, higher to the requirement of fixing-line device, and the serviceability of visible fixing-line device plays very important effect to stringing quality.
According to particular job condition and the requirement of lead clamping device, the structure of lead clamping device divides two classes both at home and abroad at present, and a class is jaw type lead clamping device, has jaw not kiss-coating and kiss-coating two kinds; Another kind of is wedge type lead clamping device, is generally used at home in the constructions such as optical fiber.China's circle line twists the fixing-line device that wire generally adopts this jaw not kiss-coating with one heart, there is multinomial patent at present, as: the patent No. is CN200980159448.5, denomination of invention is the application for a patent for invention of " fixing-line device ", provide a kind of bracing wire on operability good and bracing wire effect time unnecessary load is not increased to thread like body and thread like body can be clamped the fixing-line device held.Its technical scheme is: fixing-line device comprises stiff end thread jamming part and movable end thread jamming part, movable end thread jamming part is made to carry out the first action part of advance and retreat movement, with the respective one end of the second action part be connected with the first action part by connecting rod, be arranged on body in mode free to rotate respectively, the other end of the first action part is arranged on one end of connecting rod in mode free to rotate, the other end of the second action part is then arranged on the middle part of connecting rod in mode free to rotate, by to the other end of connecting rod to draw with stiff end and the almost parallel direction of movable end thread jamming part, make connecting rod, the second action part and the first action part interlock, and the relative stiff end thread jamming part of movable end thread jamming part is moved forward.
Application number is CN201120108487.7, denomination of invention is the utility model patent of " fixing-line device ", disclose a kind of fixing-line device, comprise horizontal groove, draw ring, lower jaw and the upper jaw on the right of the mainboard of formation fixing-line device four-bar linkage structure main body, connecting plate, torque arm, mainboard, there is one section of circular arc groove in mainboard stage casing; On the position to the left, back of upper jaw is hinged on and wins in succession, right end is connected in the circular arc groove of described mainboard by a bearing pin; Direction and the radian of circular arc groove should ensure that upper jaw is parallel with the bead of lower jaw all the time; Torque arm is provided with a spring support, this spring support is provided with one and makes the automatically reset spring of fixing-line device energy.The bead of this fixing-line device bit remains state parallel to each other under any state all always.
Application number is separately had to be CN200920070588.2, denomination of invention is the utility model patent of " a kind of fixing-line device ", its technical scheme is clamper for hanging-glue conductor, fixing-line device comprises fixing-line device body, fixing-line device body comprises connecting plate, draw ring, upper jaw, lower jaw, mainboard, torque arm, auxiliary catch, mainboard and lower jaw are by three pinned connection, and connecting plate and lower jaw are by pinned connection; One end of connecting plate, upper jaw, auxiliary catch is by pinned connection; Connecting plate and mainboard are by pinned connection; Upper jaw, lower jaw are provided with the card line cavity of ∪ shape on two faces for line, and the inner surface of card line cavity is provided with corrugated sags and crests.
Above-mentioned patent is all applicable to diameter less three layers and following round line twists general wire with one heart, Fig. 5 is that three layers of round line twist aluminum conductor cross-sectional view with one heart, the clamping that this fixing-line device can not be used for expanded conductor connects, the subject matter existed is: 1. jaw length is too short, exceeds the inspection stress that expanded conductor allows; 2. the jaw depth of parallelism is poor, and local stress is too concentrated; 3. jaw surfaces is designed with anti-slip veins or the helix identical with conductive line surfaces, will inevitably damage wires surface; 4. the pull-off force of clamping wires is less than 50% (standard value is 90% of specified pull-off force) of specified pull-off force; 5. bit and wire are three point contact, inapplicable expanded conductor; 6. jaw surfaces kiss-coating easily comes off, and causes fixing-line device landing.The problems referred to above can make expanded conductor cross section gross distortion; Top layer is impaired or break; Grip force reduces; Wire-break power is serious not up to standard etc., even there will be wire slippage and cause the great human casualty accident of Poling Construction from fixing-line device, therefore, for the heavy in section expanded conductor of this special construction, and must the fixing-line device of design specialized.
Due to DL5009.2 " power construction safety work order part 2: overhead power line " and DL/T875 " transmission line construction facility design, test basic demand " power industry standard regulation, in construction lead clamping device do not have slippage, do not answer damage wires.And common round line twists the instructions for use that aluminum conductor fixing-line device can not meet expanded conductor with one heart, conductor structures different under normal circumstances in construction and wire diameter are furnished with special fixing-line device, this expanded conductor fixing-line device is by the optimal design to structural parameters such as fixing-line device constitutional balance power system, caliper shape, jaw length, jaw maximum opening, jaw two ends grooves, fixing-line device and wire is made to reach comparatively ideal stress, fixing-line device not slippage, not damage wires while guarantee grip, for expanded conductor provides a kind of safe and reliable anchoring Work tool.
According to correlation standard, heavy in section expanded conductor fixing-line device should meet following performance requirement:
1) should without impression, without being out of shape without Relative sliding at rated load effect lower wire;
2) under 1.25 times of rated load effects, wire should without impression, without distortion (without flattening, surface is without slide mark and nest like distortion);
3) under 2 times of rated load effects, fixing-line device is without obvious Relative sliding, and after unloading, fixing-line device should fill, tear open freely;
4) coefficient of safety should be not less than 3.
Summary of the invention
The object of the invention is to provide a kind of heavy in section expanded conductor fixing-line device, be specially adapted to heavy in section support type high density polyethylene (HDPE) expanded conductor and thin geometric pattern circle line twists the construction under tension stringing of (hereinafter referred to as expanded conductors) such as aluminum conductors with one heart, simultaneously, also can be used for the anchor connection that the round line in more four layers, heavy in section twists aluminum conductor (hereinafter referred to as plain conductor) with one heart, the present invention is by the optimal design of a kind of heavy in section expanded conductor fixing-line device structure, provide the clamping device that a kind of Poling Construction is connected by Force system with anchoring with heavy in section expanded conductor, serve the transmission effect of tensile force under expanded conductor operating state.
For achieving the above object, the technical scheme that the present invention takes is:
A kind of heavy in section expanded conductor fixing-line device, described fixing-line device is four-bar linkage structure, comprise and be arranged in parallel and be articulated with train wheel bridge and the fixed pressuring plate of C point, be articulated with D point with described train wheel bridge, be articulated with the dynamic pressure plate of E point with described fixed pressuring plate, be articulated with arm-tie and the draw ring of B point, between described arm-tie and dynamic pressure plate, be articulated with A point; The right side of described fixed pressuring plate is provided with the through chute of through-thickness, and the pin joint of described arm-tie and draw ring can slide between described chute two-end-point; Its improvements are:
Distance between described pin joint A and chute remote point is L
1, the distance between described pin joint A and E is L
2, the horizontal range between pin joint E and chute remote point is L
3, then:
L
1＝(7.10～7.14)d；
L
2＝(7.68～7.72)d；
L
3＝(11.30～11.34)d；
D is diameter of wire;
The inner surface of described train wheel bridge and fixed pressuring plate is respectively provided with smooth jaw clamping arc surface, and the two ends of described arc surface are provided with gradient section and arc transition section.
Another optimal technical scheme of the present invention is: the circular arc degree of depth h >=16mm of described jaw clamping arc surface, arc chord angle α >=152 ° of arc surface.
Another optimal technical scheme of the present invention is: gradient γ >=10 ° of described arc surface gradient section, gradient segment length >=30mm.
Another optimal technical scheme of the present invention is: length L=[(9.23 ~ 9.27) d-20] mm of described train wheel bridge and fixed pressuring plate, the maximum spacing≤1.05d between described train wheel bridge and fixed pressuring plate.
Another optimal technical scheme of the present invention is: the installation depth of parallelism≤0.3mm of described train wheel bridge and fixed pressuring plate.
Another optimal technical scheme of the present invention is: described arm-tie arranges torsion spring.
Another optimal technical scheme of the present invention is: the pin joint of described arm-tie and draw ring is when chute remote point, and fixing-line device is in unloaded state; The pin joint of described arm-tie and draw ring is when chute proximal points, and fixing-line device is in clamped condition.
Owing to have employed technique scheme, the present invention not only solves 900mm
2and the anchor connection problem of the various special construction expanded conductor in above heavy in section, be also applicable to the anchor connection of more more than the four layers plain conductors in heavy in section, compared with existing fixing-line device, beneficial effect of the present invention comprises:
1. bearing capacity during anchoring is large, does not have slippage, and wire by the structure of retaining part without distortion, jaw surfaces is smooth arc surface, therefore conductive line surfaces is without impression;
2. the lever ratio L of linkage
1, L
2and L
3reasonable in design, be suitable for the wide scope of expanded conductor version, gripping performance is good;
3. the depth of parallelism of bit is good, parallel deviation between train wheel bridge and fixed pressuring plate is less than 0.3mm, conductive line surfaces and jaw remain enough contact areas, and jaw two ends are provided with gradient section and arc transition section, and the stress that can not produce under clamped condition is concentrated;
4. in conjunction with wire and jaw material behavior, jaw takes smooth surface to design, its Surface heat-treatent and roughness requirements accurate positioning, reasonable in design;
5., under the prerequisite adopting special high-strength steel, each parts has carried out Optimal Structure Designing, makes the weight saving of fixing-line device, is convenient to work high above the ground;
6. good gripping performance is that the anchor connection of heavy in section expanded conductor provides safe and reliable guarantee, solves a great problem that in Poling Construction, expanded conductor clamping Work tool lacks.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further described.
Fig. 1 is that fixing-line device is suitable for expanded conductor cross-sectional structure schematic form one;
Fig. 2 is that fixing-line device is suitable for expanded conductor cross-sectional structure schematic form two;
Fig. 3 is that fixing-line device is suitable for expanded conductor cross-sectional structure schematic form three;
Fig. 4 is that fixing-line device is suitable for expanded conductor cross-sectional structure schematic form four;
Fig. 5 is three layers of round line aluminum conductor cross-sectional structure schematic diagram;
Fig. 6 is fixing-line device operating state (applying in transmission line construction under tension stringing) schematic diagram;
Fig. 7 is fixing-line device structure (minimal openings position) schematic diagram;
Fig. 8 is fixing-line device main structure parameters schematic diagram;
Fig. 9 is upper and lower clamping plate jaw structure schematic diagram;
Figure 10 is jaw clamping heavy in section expanded conductor structural shape schematic diagram;
Reference numeral:
1-wire, 2-fixing-line device, 3-train wheel bridge, 4-fixed pressuring plate, 5-draw ring, 6-arm-tie, 7-spring clamping feature, 8-dynamic pressure plate, 9-chute;
A, B, C, D, E linkage pin joint;
The spacing of L1, L2, L3 pin joint;
H maximum open distance;
The upper lower plate gradient of γ;
The profound length in C jaw contacts face;
R arc radius;
The h circular arc degree of depth;
α arc chord angle.
Embodiment
Below in conjunction with example, the present invention will be described in detail.
The bearing capacity system of the rational lever linkage of this patent and the contact-making surface compounding technique of jaw and expanded conductor the best, provide a kind of applicable expanded conductor anchoring, and meet the fixing-line device of construction reference requirement.
Fig. 1 to Fig. 4 is the conductive wire cross-section schematic diagram of the multi-form expanding structure that the present invention is suitable for.Fig. 1 expanded conductor inner ring is all found time, steel core wrapped with insulation, then supports two-layer aluminium single line with cross high density polyethylene (HDPE); The middle level aluminum steel of Fig. 2 and Fig. 3 expanded conductor takes out stock in proportion, loosely organized, unbalance stress.Fig. 4 is another form expanded conductor.Because the contact force of conductive line surfaces can not be transmitted uniformly, the stretching resistance of wire reduces, pressurized position is easily out of shape, and diameter of wire and rated service loads are unprecedented in addition, and the technology of the present invention mainly rationally solves between this fixing-line device normal pressure and frictional force; Slippage and wire damage; The intrinsic contradictions of load and weight.By the lever ratio L1:L2:L3 (lever force system) between linkage hinged joint and jaw shapes and Rational Matching of Parameters, make it be in optimum state by Force system, reach the result of not slippage, not damage wires while ensureing grip.
Fig. 5 is common three layers of aluminum conductor cross-sectional structure schematic diagram.
Fixing-line device is in the Poling Constructions such as unwrapping wire, broken string, stringing, annex installation, connection class Work tool necessary when being needed anchoring by erection wire, for being faced by the erection any position of wire all kinds of in clamping system that anchor and stringing bear.Fig. 6 be expanded conductor fixing-line device in transmission line construction under tension stringing, working state schematic representation during clamping wire.Fixing-line device will carry the transmission of more than 25% wire-break power in anchor system.In construction, fixing-line device and anchor rope (pull rope) are connected with expanded conductor, make the tension force of wire pass to anchor line, realize folding and unfolding wire, adjustment conducting wire sag, wire docking, annex installation and restringing etc.
Fig. 7 is expanded conductor fixing-line device structural representation, and this structure is lever connecting rod formula mechanism, and its fixing-line device is primarily of train wheel bridge 3, fixed pressuring plate 4, draw ring 5, arm-tie 6, spring clamping feature 7 and dynamic pressure plate 8.Fixed pressuring plate 4 is provided with chute 9, and chute 9 is through along fixing-line device thickness direction, and chute 9 has 2 end points, and the end points near fixed pressuring plate 4 edge is defined as the remote point of chute 9, and the end points near fixed pressuring plate 4 inside is defined as the proximal points of chute 9.This mechanism applies with external force by draw ring 5, and in clamping expanded conductor 1 process, external force is the pulling force by Force system, and pulling force passes through arm-tie 6 power transmission to dynamic pressure plate 8, train wheel bridge 3, wire 1 and fixed pressuring plate 4.Due to leverage, lower plate is made to produce the clamping force being greater than pulling force, under the effect of clamping force, expanded conductor and upper lower plate produce frictional force, overcome the pulling force of wire, do not make wire skid off, reach the object clamping wire, now, draw ring 5 is positioned at the position near chute 9 proximal points with the pin joint B of arm-tie 6, and fixing-line device is in minimal openings state.When fixing-line device 2 is dismantled, external force is the thrust that staff gives draw ring 5, thrust passes through arm-tie 6 power transmission to dynamic pressure plate 8, draw ring 5 is moved along the level trough on fixed pressuring plate 4, and promotion arm-tie 6 and dynamic pressure plate 8 are with E point for axis rotation, and dynamic pressure plate 8 drives on train wheel bridge 3 and moves simultaneously, jaw is opened, now, draw ring 5 is positioned at the position near chute 9 remote point with the pin joint B of arm-tie 6, and fixing-line device is in maximum open state.
The arm-tie 6 of fixing-line device 2 being equipped with special torsion spring 7, ensureing when there is no External Force Acting, produce more effective pre-clamping force.B point need only be promoted during use, clamping plate open, wire 1 is positioned in clamping plate, unclamps fixing-line device 2, under the effect of torsion spring 7, upper lower plate can clamp wire 1, after applying is with external force, owing to being bar thick stick link mechanism, along with the increase of pulling force, frictional force is also increasing, thus realizes the function of fixing-line device 2.
Fig. 8 is fixing-line device main structure parameters schematic diagram, the present invention considers conductor structure and parameter and to factors such as fixing-line device rated load (putting stringing tension force), serviceability requirements, the feature that structural difference is large, rated service loads is large according to expanded conductor and plain conductor designs.For this reason, this patent takes concrete technical scheme as follows:
1) proportioning of appropriate design adjustment power system
Train wheel bridge 3 is connected with dynamic pressure plate 8 by hinge at D point, and C point slides in the arc chute of fixed pressuring plate 4.The common clamping wire of arc surface of train wheel bridge 3 and fixed pressuring plate 4, at this moment the frictional force that the pulling force of wire is produced by two contact-making surfaces of upper lower plate and wire is born, for ensureing that train wheel bridge keeps translation in whole mechanism kinematic, be a scope definite value 52.90 ° ~ 52.94 ° by arc groove on fixed pressuring plate 4 to the constraint reaction of train wheel bridge and horizontal angle; Distance L1 between linkage hinged joint B, A, E, L2, L3 are one group of fixed length.
2) appropriateness increases jaw length
Specify that the jaw length L of fixing-line device >=6.5d-20mm design can not engineering demands according to standard, the present invention is through repeatedly designing---test---research, the selection obtaining expanded conductor fixing-line device jaw length (L) should be: L >=9.25d-20mm, increasing jaw length is improve the chucking power of jaw, reduce one of most effective measures of wire localized contact stress, but, fixing-line device is a lever connecting rod formula mechanism, for ensureing the balance when clamping wire between a connecting rod, fixing-line device volume must increase, if jaw long fixing-line device weight is excessive, very large difficulty is brought to work high above the ground, otherwise, then damage wires, reduce the specified pull-off force of wire.Therefore, corresponding under the chucking power of jaw length to be wire with the contact stress that the frictional force of contact-making surface produces should be greater than jaw and rational poised state minimum value.
3) rational caliper maximum open is determined
On fixing-line device 2, first lower plate maximum open locates according to the diameter of expanded conductor, for wire is conveniently put into, taken out and leave minimum gap, then, and the balance of design organization power system on this basis.Usual minimum clearance is not more than 2mm.
4) jaw two ends bevel design
By structures shape, fixing-line device in working order under, upper lower plate and External Force Acting line have certain angle, its vertical stress component can produce stress to wire in jaw end and concentrate, for preventing damage or cutting off aluminum steel, the sufficiently long gradient and smooth arc transition must be designed in upper lower plate both ends, and its gradient is 1.00 ﹕ 5.67, and groove length >=30mm.
Fig. 9 is upper lower plate jaw structure parameter schematic diagram, and the present invention increases the containing amount of jaw and expanded conductor, namely strengthens groove depth and jaw arc wrap angle.Wire must be had certain space by after clamp between jaw, avoids train wheel bridge in loading process to compress fixed pressuring plate, wire slippage.So groove depth should be less than wire radius.Go up lower plate caliper shape simultaneously and all adopt the arc surface fitted with expanded conductor outer surface, when making lower plate clamping wire and wire mesh together, the female surface of its circular face is the bigger the better, but do not touch when should clamp with bit as principle, the extrusion stress of jaw to wire 1 is reduced to minimum value.
Figure 10 is jaw clamping heavy in section expanded conductor structural representation, and this figure is under fixing-line device clamping wire state, fixing-line device and conductive line surfaces contact condition, and now, the smooth arc-shaped surface of wire and train wheel bridge 3 and fixed pressuring plate 4 fits.
According to specific exemplary embodiment, invention has been described herein.It will be apparent under not departing from the scope of the present invention, carrying out suitable replacement to one skilled in the art or revise.Exemplary embodiment is only illustrative, instead of the restriction to scope of the present invention, and scope of the present invention is defined by appended claim.
Claims (6)
1. a heavy in section expanded conductor fixing-line device, described fixing-line device is four-bar linkage structure, comprise and be arranged in parallel and be articulated with train wheel bridge (3) and the fixed pressuring plate (4) of C point, be articulated with D point with described train wheel bridge (3), be articulated with the dynamic pressure plate (8) of E point with described fixed pressuring plate (4), be articulated with arm-tie (6) and the draw ring (5) of B point, between described arm-tie (6) and dynamic pressure plate (8), be articulated with A point; The right side of described fixed pressuring plate (4) is provided with the through chute of through-thickness (9), and the pin joint of described arm-tie (6) and draw ring (5) can slide between described chute (9) two-end-point; It is characterized in that:
Distance between described pin joint A and chute (9) remote point is L
1, the distance between described pin joint A and E is L
2, the distance between pin joint E and chute (9) remote point is L
3, then:
L
1＝(7.10～7.14)d；
L
2＝(7.68～7.72)d；
L
3＝(11.30～11.34)d；
D is diameter of wire;
The inner surface of described train wheel bridge (3) and fixed pressuring plate (4) is respectively provided with smooth jaw clamping arc surface, and the two ends of described arc surface are provided with gradient section and arc transition section;
Length L=[(9.23 ~ 9.27) d-20] mm of described train wheel bridge (3) and fixed pressuring plate (4), the maximum spacing≤1.05d between described train wheel bridge (3) and fixed pressuring plate (4).
2. a kind of heavy in section as claimed in claim 1 expanded conductor fixing-line device, is characterized in that the circular arc degree of depth h >=16mm of described jaw clamping arc surface, arc chord angle α >=152 ° of arc surface.
3. a kind of heavy in section as claimed in claim 1 expanded conductor fixing-line device, is characterized in that gradient γ >=10 ° of described arc surface gradient section, gradient segment length >=30mm.
4. a kind of heavy in section as claimed in claim 1 expanded conductor fixing-line device, is characterized in that the installation depth of parallelism≤0.3mm of described train wheel bridge (3) and fixed pressuring plate (4).
5. a kind of heavy in section as claimed in claim 1 expanded conductor fixing-line device, is characterized in that described arm-tie (6) arranges torsion spring (7).
6. a kind of heavy in section as claimed in claim 1 expanded conductor fixing-line device, it is characterized in that the pin joint of described arm-tie (6) and draw ring (5) is when chute remote point, fixing-line device is in unloaded state; The pin joint of described arm-tie (6) and draw ring (5) is when chute proximal points, and fixing-line device is in clamped condition.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210249732.5A CN102832570B (en) | 2012-07-18 | 2012-07-18 | A kind of heavy in section expanded conductor fixing-line device |
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|---|---|---|---|
| CN201210249732.5A CN102832570B (en) | 2012-07-18 | 2012-07-18 | A kind of heavy in section expanded conductor fixing-line device |
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| CN102832570B true CN102832570B (en) | 2015-12-02 |
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| JP5953227B2 (en) * | 2012-12-27 | 2016-07-20 | 株式会社永木精機 | Grabber |
| CN103388418B (en) * | 2013-08-01 | 2016-03-02 | 国家电网公司 | Utilize the method for transmission line of electricity non-self-supporting tower bracing wire repairing and backup protection type connector connecting stay wire |
| CN103474915A (en) * | 2013-09-11 | 2013-12-25 | 江苏恒安电力工具有限公司 | Wire clamping device |
| CN103956684A (en) * | 2014-05-15 | 2014-07-30 | 固力发集团有限公司 | Hinge-type cable clamp installation tool |
| CN106238624A (en) * | 2016-08-26 | 2016-12-21 | 深圳市朝阳光科技有限公司 | The automatic wire arrangement structure of wire rod |
| FR3068423B1 (en) * | 2017-06-30 | 2019-07-26 | Rte Reseau De Transport D’Electricite | DEVICE AND METHOD FOR VOLTAGE LOCKING A CABLE USING A GREEN-CABLE CLAMP |
| CN111609090A (en) * | 2020-06-10 | 2020-09-01 | 国网四川电力送变电建设有限公司 | Polypropylene rope clamping device, use method and application |
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| CN2779689Y (en) * | 2005-03-02 | 2006-05-10 | 嘉善东方电力机具制造有限公司 | Wire fixer with eccentric slot roller |
| CN102439808A (en) * | 2009-06-30 | 2012-05-02 | 株式会社永木精机 | Wire gripper |
| CN101752816A (en) * | 2009-12-21 | 2010-06-23 | 中国电力科学研究院 | Dead-end clamp for supporting expanded diameter conductors |
| CN202084852U (en) * | 2011-04-10 | 2011-12-21 | 孙磊 | Line jamming device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019002717A1 (en) * | 2017-06-30 | 2019-01-03 | Rte Reseau De Transport D'electricite | Device and method for tension-locking a cable by means of a cable clamp |
| FR3068422A1 (en) * | 2017-06-30 | 2019-01-04 | Rte Reseau De Transport D’Electricite | DEVICE AND METHOD FOR VOLTAGE LOCKING A CABLE USING A GREEN-CABLE CLAMP |
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| Publication number | Publication date |
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| CN102832570A (en) | 2012-12-19 |
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