CN205822893U - A kind of special-shaped cross-arm and power transmission rod - Google Patents
A kind of special-shaped cross-arm and power transmission rod Download PDFInfo
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- CN205822893U CN205822893U CN201620554425.1U CN201620554425U CN205822893U CN 205822893 U CN205822893 U CN 205822893U CN 201620554425 U CN201620554425 U CN 201620554425U CN 205822893 U CN205822893 U CN 205822893U
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Abstract
A kind of special-shaped cross-arm and power transmission rod, above-mentioned special-shaped cross-arm includes the vertical portion at horizontal part and two ends, and this abnormal shape cross-arm is one-body molded, and the horizontal part of this abnormal shape cross-arm is installed on power transmission rod, and vertical portion is used for supporting wire.Above-mentioned horizontal part and vertical portion need not separately formed, it is not necessary to consider the connected mode between above-mentioned horizontal part and above-mentioned vertical portion, it is not required that connect together.Owing to the special-shaped cross-arm in this utility model is one-body molded, eliminate cross-arm each structure assembling procedure, can be by this abnormal shape cross-arm integral installation on power transmission rod so that install easier.
Description
Technical field
This utility model relates to a kind of transmission of electricity insulator arrangement, a kind of special-shaped cross-arm for transmission of electricity and power transmission rod.
Background technology
In overhead transmission line, transmission tower plays the effect supporting wire, and specifically wire hangs over transmission tower
The free end of cross-arm, so cross-arm needs to meet certain mechanical property and insulating properties.In the prior art, tradition power transmission tower
Cross-arm be usually metallic article, due to the electric conductivity of metal material, it is necessary on power transmission tower, the free end of cross-arm arranges pendency
Insulator chain, plays between wire and power transmission rod, insulating effect between wire and wire.Consider that wind is put wire and transmission of electricity
The impact of insulation distance between bar, between wire and wire, considers when designing cross-arm to increase cross-arm length, but so can make
Line corridor is wide, cost increases, and also results in land resource waste.
Arranging the cross-arm of pin insulator on also horizontal metal cross-arm relatively common in prior art, wherein pin type is exhausted
Edge is porcelain insulator, and pin insulator is typically fixed on horizontal cross-arm by can etc..Cross-arm of the prior art is tied
Structure is complicated, it is loaded down with trivial details to assemble.And the cross-arm of transmission tower both sides is all to be separately fixed on transmission tower so that on transmission tower
Cross-arm is installed the most difficult.
Utility model content
For the deficiencies in the prior art, one of the purpose of this utility model is to provide a kind of special-shaped cross-arm, solves cross-arm and divides
The problem that body formed, assembling procedure is loaded down with trivial details.
For achieving the above object, the technical scheme that this utility model is used is as follows: a kind of special-shaped cross-arm, is used for transmitting electricity
Bar, above-mentioned special-shaped cross-arm includes horizontal part and is positioned at the vertical portion at above-mentioned horizontal part two ends, and above-mentioned horizontal part is fixed on above-mentioned defeated
On electric pole, above-mentioned vertical portion is used for connecting wire, and above-mentioned special-shaped cross-arm is one-body molded.
Above-mentioned horizontal part and vertical portion need not separately formed, it is not necessary to consider between above-mentioned horizontal part and above-mentioned vertical portion
Connected mode, it is not required that connect together.Special-shaped cross-arm in this utility model is one-body molded, eliminates cross-arm each
Structure assembling procedure, can be by this abnormal shape cross-arm integral installation on power transmission rod so that install easier.
When arranging single loop circuit on power transmission rod, the wire of mounting is needed to have three, vertical at above-mentioned special-shaped cross-arm two
Portion respectively mounts a wire, additionally arranges a pin insulator on power transmission rod, can be used for mounting three of the wires.
When arranging double circuit line on power transmission rod, need the wire of mounting to have six, three can be installed on power transmission rod
Above-mentioned special-shaped cross-arm, the vertical portion of each special-shaped cross-arm all mounts a wire.
Other multi-loop lines the like, so special-shaped cross-arm of the present utility model is applicable to answering of various return lead
With.
Preferably, above-mentioned special-shaped cross-arm also include being arranged on above-mentioned horizontal part, between two above-mentioned vertical portions the
Three vertical portions, above-mentioned vertical portion is used for connecting wire, and above-mentioned special-shaped cross-arm is one-body molded.
Above-mentioned special-shaped cross-arm is one-body molded, eliminates cross-arm each structure assembling procedure, can be by this abnormal shape cross-arm integral installation
On power transmission rod so that install easier.Compared to the cross-arm of two vertical portions of transmitting electricity for single loop, only include, this abnormal shape
Cross-arm includes three vertical portions, when being arranged on power transmission rod by cross-arm, it is not necessary to individually install pin type insulation on power transmission rod
Son, the three of the wires in single loop is directly articulated on three vertical portions of this abnormal shape cross-arm.
Preferably, above-mentioned special-shaped cross-arm is composite material cross arm.
In prior art metal cross arm general with suspension insulator with the use of, suspension insulator one end is connected to metal horizontal stroke
In load, wire is articulated in the other end of suspension insulator.Owing to the effect of wind pendulum can make wire follow suspension insulator to swing, because of
This common practices is the length of metal cross arm to be increased, the minimum electricity to meet between wire and power transmission tower, between wire and wire
Gas insulation distance.Line corridor can be made wide the length increase of metal cross arm, and relatively costly.
The material of above-mentioned special-shaped cross-arm is set to composite, and relative to metal cross arm, above-mentioned special-shaped cross-arm self has
Insulating properties, need not arrange suspension insulator, can reduce line corridor.Composite is relative to metal corrosion-resistant, low cost, institute
Strong, the low cost with above-mentioned special-shaped cross-arm environmental suitability.
One-body molded general employing of metal abnormal shape cross-arm casts, composite abnormal shape cross-arm cure process comparatively speaking
It is easier to realize, so relative to metal, the special-shaped cross-arm of composite is one-body molded more convenient.
Preferably, above-mentioned special-shaped cross-arm is by one, compression molding.
Use compression molding, only need to design and the special-shaped corresponding mould of cross-arm, due to the specification of above-mentioned special-shaped cross-arm
Less, die sinking expense is relatively low.Relative to pultrusion, special-shaped cross-arm uses compression molding to be easier to realize.
Preferably, in vertical plane, two above-mentioned vertical portions are positioned at the top of above-mentioned horizontal part.
Above-mentioned vertical portion is arranged on the top of above-mentioned horizontal part, and vertical portion is primarily subjected to the pressure of wire.
Preferably, it is arranged at silicon rubber umbrella skirt outside above-mentioned vertical portion.
Vertical portion is for electric insulation and supports wire；Silicon rubber umbrella skirt outside vertical portion can be used for anti-aging and anti-sudden strain of a muscle
Network.
Preferably, above-mentioned vertical portion arranges at least three umbrella sheet.
The special-shaped resistance to pollution flashover of cross-arm, anti-flashover ability are relevant with the creep age distance of full skirt, and the definition of creep age distance is two
Individual current-carrying part is along the beeline on full skirt surface.Creep age distance is the biggest, and anti-flashover ability is the strongest, but for specific voltage grade
For transmission of electricity, certain creep age distance is enough.Because under meeting corresponding creep age distance, a umbrella sheet of setting needs very
Greatly, such mould can be very big, and die sinking cost is high, and difficulty is big, easily tears umbrella during molding.If umbrella sheet quantity arranges in right amount, umbrella sheet
Specification the most moderate, will be easy to processing, low cost.So relative to arranging a umbrella sheet or two umbrella sheets, arranging at least three
The scheme of individual umbrella sheet is more excellent.
Preferably, above-mentioned silicon rubber umbrella skirt is directly socketed on above-mentioned vertical portion or direct injection becomes outside above-mentioned vertical portion
Type.
Above-mentioned silicon rubber umbrella skirt can first compression molding, then the full skirt molded is socketed on vertical portion, it is possible to direct
Injection moulding silicon rubber umbrella skirt outside vertical portion, saves the operations such as socket.
Preferably, the cross section of above-mentioned horizontal part is hollow rectangle.
Being computed, compared to other cross sectional shapes, hollow rectangle bending strength in vertical plane and in horizontal plane is preferable.By
Wire gravity is born, so hollow rectangle is most preferred form in cross-arm mainly vertical plane.
Preferably, above-mentioned vertical portion is formed with the supporting part that can support wire, its can by wire restraint above-mentioned vertically
In portion.
Preferably, above-mentioned supporting part includes the groove being formed on above-mentioned vertical portion, and above-mentioned groove can house above-mentioned wire.
Preferably, above-mentioned supporting part includes fixing with above-mentioned vertical portion being connected and for the union joint supporting wire, and this is even
Joint is fixed at least one end of above-mentioned vertical portion.
Preferably, above-mentioned union joint offers the groove housing above-mentioned wire, so that above-mentioned wire is through above-mentioned recessed
Groove is limited on above-mentioned vertical portion.
Preferably, above-mentioned special-shaped cross-arm also includes the first connector, above-mentioned first connector and above-mentioned union joint Joint,
With by above-mentioned wire restraint in above-mentioned groove.
Above-mentioned first connector and above-mentioned groove with the use of, a cavity volume can be formed, for accommodating and spacing wire.
For the deficiencies in the prior art, the two of the purpose of this utility model are to provide a kind of power transmission rod, solve cross-arm and install
The problem that difficulty, line corridor are wide.
Above-mentioned special-shaped cross-arm is one-body molded, can be directly anchored on power transmission rod, easy for installation.Relative to metal cross arm, on
State special-shaped cross-arm self and have insulating properties, so using the power transmission rod of above-mentioned special-shaped cross-arm need not additionally arrange suspension insulator,
Line corridor can be reduced.
Preferably, above-mentioned power transmission rod includes that fixture, above-mentioned fixing piece are used for fixing above-mentioned abnormity cross-arm and the above-mentioned body of rod,
Above-mentioned fixing piece includes that body of rod connector and cross-arm accommodating member, above-mentioned body of rod connector are used for connecting the above-mentioned body of rod and above-mentioned cross-arm
Accommodating member, above-mentioned cross-arm accommodating member is used for housing above-mentioned special-shaped cross-arm.
Above-mentioned fixing piece includes cross-arm accommodating member, is used for housing above-mentioned special-shaped cross-arm, therefore need not on special-shaped cross-arm
Punching, it is ensured that the mechanical property of cross-arm, enables cross-arm normally to support wire, it is ensured that transmission line of electricity is properly functioning.
Preferably, above-mentioned cross-arm accommodating member circumferentially surrounds above-mentioned cross-arm along above-mentioned cross-arm.
Preferably, above-mentioned body of rod connector circumferentially surrounds the above-mentioned body of rod along the above-mentioned body of rod.
Owing to the body of rod is a cylinder, make above-mentioned body of rod connector along the above-mentioned body of rod that circumferentially surrounds of the above-mentioned body of rod, more just
In connecting cylinder.
Preferably, the cavity volume inwall of above-mentioned cross-arm accommodating member and the outer surface kissing of accommodating above-mentioned special-shaped cross-arm within it
Close.
The cavity volume inwall of above-mentioned cross-arm accommodating member is made to match with the outer surface of accommodating above-mentioned special-shaped cross-arm within it, can
Above-mentioned special-shaped cross-arm is avoided to rock in above-mentioned cross-arm accommodating member so that it is to install more stable.
Preferably, the inwall of above-mentioned body of rod connector matches with the outer surface of the above-mentioned body of rod surrounded within it.
Make the inwall of above-mentioned body of rod connector match with the outer surface of the above-mentioned body of rod surrounded within it, can make the body of rod with
The contact area of body of rod connector is bigger, is more convenient for firmly fixing the body of rod.
Accompanying drawing explanation
Fig. 1 to Fig. 5 is the schematic diagram of this utility model embodiment one,
Wherein:
Fig. 1 is the axonometric chart of special-shaped cross-arm 100；
Fig. 2 is the axonometric chart of molded rear special-shaped cross-arm 100 rod member of Integral mold；
Fig. 3 is the enlarged drawing of union joint in Fig. 1；
Fig. 4 is the schematic diagram that special-shaped cross-arm 100 is arranged on power transmission rod；
Fig. 5 is special-shaped cross-arm 100 and the enlarged drawing of power transmission rod fixed form in Fig. 4.
Fig. 6 is the use schematic diagram that vertical portion is positioned at the special-shaped cross-arm below horizontal part and power transmission rod.
Fig. 7 to Figure 10 is the schematic diagram of this utility model embodiment two,
Wherein:
Fig. 7 is the axonometric chart of special-shaped cross-arm 110；
Fig. 8 is the axonometric chart of the rod member of the molded rear special-shaped cross-arm 110 of Integral mold；
Fig. 9 is the partial enlarged drawing of end, vertical portion in Fig. 7；
Figure 10 and Figure 11 is the schematic diagram that special-shaped cross-arm 110 is arranged on power transmission rod.
Figure 12 to Figure 14 is the schematic diagram of this utility model embodiment three,
Wherein:
Figure 12 is the axonometric chart of special-shaped cross-arm 120；
Figure 13 is the schematic diagram of the rod member of the molded rear special-shaped cross-arm 120 of Integral mold；
Figure 14 is the schematic diagram that special-shaped cross-arm 120 is arranged on power transmission rod.
Figure 15 is special-shaped cross-arm and the use schematic diagram of power transmission rod in the double loop arranging full skirt.
Figure 16 to Figure 19 is the partial schematic diagram that special-shaped cross-arm installed on the body of rod by several employing fixture.
Detailed description of the invention
As requested, detailed description of the invention of the present utility model will be disclosed here.It is to be understood, however, that institute here
The embodiment disclosed is only exemplary of the present utility model, and it can be presented as various forms.Therefore, disclose here
Detail be not to be considered as limiting, and be merely possible to the basis of claim and as instructing this area
Technical staff in reality any appropriate in the way of differently apply representational basis of the present utility model, including using here
Disclosed various features combination are likely not to have the feature clearly disclosed here.
Embodiment one:
As depicted in figs. 1 and 2, the special-shaped cross-arm 100 in the present embodiment includes horizontal part 1 and is positioned at horizontal part 1 two ends
Vertical portion 2.Wherein, horizontal part 1 is fixed together for the body of rod with power transmission rod, and vertical portion 2 is used for supporting wire.
Wherein, horizontal part 1 be cross section be circular solid composite rod member.It is of course also possible to horizontal part 1 is arranged
For hollow rod member.The material of horizontal part 1 is glass fibre and epoxy resin.
In the present embodiment, vertical portion 2 be cross section be circular composite material, material is identical with horizontal part.Vertically
Portion 2 is outside equipped with full skirt 3, specifically, vertical portion 2 is provided with four umbrella sheets.The material of full skirt 3 is high-temperature silicon disulfide rubber,
Owing to high-temperature silicon disulfide rubber anti-uv-ray is strong, ageing-resistant, so the effect of protection can be played in vertical portion 2 by full skirt 3.Institute
Longer to be provided with the life-span of the special-shaped cross-arm 100 of full skirt 3.
Another effect of full skirt 3 is anti-flashover, and the flashover voltage of special-shaped cross-arm 100 can be made to increase by the setting of full skirt 3
Greatly, resistance to flashover ability strengthens.Resistance to pollution flashover, anti-flashover ability are relevant with the creep age distance of full skirt 3, and the definition of creep age distance is two
Individual current-carrying part is along the beeline on full skirt 3 surface, relevant with the girth of full skirt 3.Creep age distance is the biggest, and anti-flashover ability is more
By force, but for specific voltage grade transmit electricity for, certain creep age distance is enough.Because meeting corresponding creep age distance
Under, a umbrella sheet of setting needs very big, and such mould can be very big, and die sinking cost is high, and difficulty is big, easily tears umbrella during molding.As
Really umbrella sheet quantity arranges in right amount, and the specification of umbrella sheet is the most moderate, will be easy to processing, low cost.So relative to arranging a umbrella
Sheet or two umbrella sheets, arrange three or four umbrella sheets advantageously.Full skirt 3 first passes through compression molding, then profit in the present embodiment
Directly it is socketed on vertical portion 2 with the elastic deformation of silicon rubber umbrella skirt.
As in figure 2 it is shown, horizontal part 1 and vertical portion 2 are an entirety, by short glass fiber epoxy resin-impregnated Integral mold
Molded.Owing to horizontal part 1 and vertical portion 2 need not separately formed, so without the concern between horizontal part 1 and vertical portion 2
Connected mode, it is not required that connect together.Special-shaped cross-arm 100 in the present embodiment is one-body molded, eliminates cross-arm
Each structure assembling procedure.The mode of one cross-arm, this enforcement are respectively installed relative to body of rod both sides at power transmission rod in prior art
By easier for this abnormal shape cross-arm 100 integral installation mode on the body of rod of power transmission rod in example.Vertical portion 2 is in the present embodiment
Cylindrical composite section bar, certain vertical portion 2 can also mold out hard umbrella body or other structures by the design of mould.
The material of above-mentioned special-shaped cross-arm 100 is composite, and relative to metal cross arm, above-mentioned special-shaped cross-arm 100 has self
Insulating properties, need not arrange suspension insulator, can reduce line corridor.Composite is relative to metal corrosion-resistant, low cost, institute
Strong, the low cost with above-mentioned special-shaped cross-arm 100 environmental suitability.
As it is shown on figure 3, be fixedly connected with union joint 4 in the end of vertical portion 2, union joint 4 is used for supporting wire.Specifically
Ground, union joint 4 is the end by being crimped on vertical portion 2, and certain union joint 4 can also be glued to the end of vertical portion 2, but by
Cross section in vertical portion is less, it is advantageous to crimping.The end of union joint 4 is formed with groove 5 and two screwed holes.Connector
6 are fixed on union joint 4, are coordinated with groove 5 by connector 6, can be by wire restraint on vertical portion 2.Wherein connector 6 by
Arcuate member in the middle of the connecting plate on both sides and two connecting plates is constituted, and arcuate member and groove 5 cooperatively form a cavity, leads for accommodating
Line.It is provided with the hole corresponding with union joint 4 on connecting plate, connecting plate can be fixed on union joint 4 by bolt.Union joint 4
Material can be metal can also be composite, preferably metal, can be such as the metals such as ferrum, steel, aluminum.
Special-shaped cross-arm of the present utility model is applied to 35kv and following voltage domain.In the present embodiment, special-shaped cross-arm should
For 10kv field of power transmission, it is clear that can also use under the voltage of 20kv or 35kv.
Fig. 4 is that the special-shaped cross-arm 100 of the present embodiment is arranged on the schematic diagram on the body of rod 7 of power transmission rod, except special-shaped cross-arm
100, the body of rod 7 of power transmission rod also sets up a pin insulator 8.The free end of pin insulator 8 is again provided with union joint
4, and pin insulator 8 is fixed on the top of the body of rod 7 of power transmission rod by anchor ear.Power transmission rod in the present embodiment is used for single loop
Transmission of electricity, total three-phase conducting wire.When putting into operation, wire can be the most spacing in pin insulator 8, the vertical portion 2 of special-shaped cross-arm 100
On groove 5 in.
Specifically, special-shaped cross-arm 100 is to be arranged on bar with the approximately perpendicular mode of the body of rod 7 of power transmission rod by fixture 9
On body 7.Fixture 9 includes body of rod connector 10 and cross-arm accommodating member 11, and body of rod connector 10 is two U-shaped armful arranged up and down
Hoop, the opening at each U-shaped anchor ear is provided with screw thread.Cross-arm accommodating member 11 includes arcuate member and the connection on arcuate member both sides
Sheet, arcuate member is formed with a cavity volume, is used for accommodating special-shaped cross-arm 100, connects and be provided with four holes altogether on sheet, for for U-shaped
Anchor ear passes and fastens.
In vertical plane, two vertical portions 2 are positioned at the top of horizontal part 1, and at this moment special-shaped cross-arm 100 is primarily subjected to wire deadweight
The pressure brought.Special-shaped cross-arm 100 is positioned at the side of the body of rod 7 of power transmission rod, and U-shaped anchor ear surrounds the body of rod 7 of power transmission rod, and U-shaped is embraced
Two arms of hoop opening, through the hole connected on sheet, are fixed up with securing member.Wherein partial approach figure such as Fig. 5 of bearing
Shown in, two arms of U-shaped anchor ear opening are provided with screw thread, with above-mentioned threaded engagement, abnormal shape is horizontal by pad, nut
Load 100 is fixed on the body of rod 7 of power transmission rod.
As shown in Figure 6, it is clear that special-shaped cross-arm can also be arranged on power transmission rod in the way of contrary to the above, make vertically
Portion is positioned at horizontal part lower end, and at this moment special-shaped cross-arm is primarily subjected to the pulling force of wire.But should be noted full skirt in vertical plane
Exumbrella is dome-shaped, is beneficial to the landings such as filth, sleet.Special-shaped cross-arm can also pass through the fixed form shown in Fig. 6, due to
Fixing needs in Fig. 6 punch on special-shaped cross-arm, it is advantageous to the fixed form do not punched.
Embodiment two:
As it is shown in fig. 7, in the present embodiment, special-shaped cross-arm 120 includes that horizontal part 12 and three be positioned on horizontal part erect
Straight portion 13, two of which vertical portion 13 lays respectively at the two ends of horizontal part, and the 3rd vertical portion 13 is positioned at the stage casing of horizontal part.
Horizontal part 12 is hollow composite rod member equally, and its cross section 14 is hollow square unlike embodiment one
Shape.Because the mechanical characteristic of square tube is best, so horizontal part 12 is set to square tube, be conducive to strengthening special-shaped cross-arm 120
Mechanical property.
The reason selecting square tube is as follows:
In order to compare different cross section shape mechanical characteristic under plain bending state, to hollow square tube, pipe, I-shaped
Pipe and flat rectangular beam contrast.For the ease of comparing, take the square tube of 63 × 90 × 5 specifications as a reference to carry out contrast meter
Calculate.
Assume:
(1) horizontal part 12 section has the area (area of non-hollow part) of material is identical.Such as, empty
The area in the cross section of core structure is the area of annular, and solid construction is the area of gross section.
(2) horizontal part 12 wall thickness of hollow-core construction is 5mm, and wherein the web thickness of I shape horizontal part 12 is 5mm.
(3) in addition to circular cross-section, hollow rectangle (empty quadrilateral), Filled Rectangle (filled quadrilateral) and I-shaped
The length-width ratio in horizontal part 12 cross section the most identical.
In the case, the difference calculated level portion 12 cross section bending strength in vertical plane and in horizontal plane.As
Shown in table 1:
Table 1
From above-mentioned table 1, horizontal part 11 uses hollow-core construction, and its bending strength is better than solid construction.Although I-shaped
Shape horizontal part cross section bending strength in vertical plane is of a relatively high, but its cross section bending strength in horizontal plane is too low, so can
The stability making the web of I-shaped horizontal part has weakened.Consider the above-mentioned factor shadow to horizontal part bending strength
Ringing, horizontal part 12 cross sectional shape of the application preferably employs hollow-core construction.
Secondly as horizontal part mainly carries the active force that transmission pressure deadweight is brought, this active force is mainly vertically
The bending strength of horizontal part is affected in face.Based on this, in hollow-core construction, due to the bending resistance in vertical plane of the hollow rectangle structure
Intensity is more than hollow circular configuration bending strength in vertical plane.It is therefore preferable that be hollow rectangle structure.
Wherein, the vertical portion 13 of special-shaped cross-arm 110 is cylinder equally, and the outer vacuum injection molding in vertical portion 13 has full skirt
15.Vertical portion 13 is composite material, and material is identical with horizontal part.In the present embodiment, vertical portion 13 is provided with three umbrella sheets.
The material of full skirt 15 is high-temperature silicon disulfide rubber equally, and play a protective role vertical portion 13 has the effect of anti-flashover simultaneously.
As shown in Figure 8, horizontal part 12 and vertical portion 13 are an entirety, by short glass fiber epoxy resin-impregnated one
Compression molding.Owing to the special-shaped cross-arm 110 in the present embodiment is one-body molded, horizontal part 12 need not individually become with vertical portion 13
Type, so eliminating cross-arm each structure assembling procedure.Unlike embodiment two, the vertical portion 13 in horizontal part 12 stage casing substitutes
The pin insulator being individually fixed on power transmission rod, so only need to use one so on the power transmission rod of single loop transmission of electricity
Special-shaped cross-arm 110, eliminate the installation of single pin insulator so that on power transmission rod, the installation of cross-arm is easier
?.
As it is shown in figure 9, be not provided with union joint unlike embodiment two on vertical portion 13, but directly vertically
It is formed with groove 16 in portion 13, is threaded hole in the both sides of groove 16.Connector 17 is by the screw thread on bolt and vertical portion
Hole is fixed on the end of vertical portion 12, forms a cavity that can accommodate wire with groove 16.
The groove 16 arranged on vertical portion 13 can directly be formed when special-shaped cross-arm 110 compression molding, it is possible to after shaping
Special-shaped cross-arm 110 vertical portion 13 on turning formed.Owing to directly forming groove 16 on vertical portion 13, it is not necessary to the most extra
Union joint is set, without the fixed relationship considered between union joint and vertical portion 13 so that special-shaped cross-arm 110 structure is simpler
Change.
Can first select corresponding mould, short glass fiber and epoxy resin are loaded mould, the molding that is heating and curing is this reality
Execute the special-shaped cross-arm 110 in example.When after special-shaped cross-arm 110 curing molding, open mould, abnormal shape cross-arm 110 is taken out, vertically
Turning groove 16 and corresponding screwed hole in portion 13, for wire restraint.Use overall vacuum injection technique in each vertical portion
Upper injection comprises the full skirt 15 of three umbrella sheets.
As shown in Figure 10 and Figure 11, after special-shaped cross-arm 110 completes, by fixture 18, its integral installation can transmitted electricity
On the body of rod 19 of bar.Wire is put in the groove 16 on vertical portion 13, then two connecting plates of connector 17 are fixed on perpendicular
Just can be by wire restraint in groove 16 in straight portion 13.
Specifically, fixture 18 includes body of rod connector 20 and cross-arm accommodating member 21.Body of rod connector 20 is an encirclement
The body of rod 19 and and the metallic plate of cross-arm accommodating member 21 connection, body of rod connector 20 surrounds the part of the body of rod 19 and the outer wall of the body of rod 19
It coincide.Cross-arm accommodating member 21 is two U-shaped anchor ears, and the U-shaped anchor ear of the two is fixed on the body of rod respectively and connects in the both sides of the body of rod 19
On part 20.Abnormal shape cross-arm 110 is fixed on the body of rod 19 by fixture 18, it is to avoid punch on special-shaped cross-arm 110, it is ensured that different
The mechanical property of type cross-arm 110.
Embodiment three:
As shown in Figure 12 and Figure 13, in the present embodiment, special-shaped cross-arm 120 includes horizontal part 20 and is positioned at horizontal part two ends
Vertical portion 21.Wire is articulated on vertical portion 21, and this abnormal shape cross-arm 120 is fixed on power transmission rod by horizontal part 20.
Identical with embodiment one and embodiment two, that horizontal part 20 is short glass fiber and resin is made composite bar
Part, is provided with two installing holes in the stage casing of horizontal part 20, for using this abnormal shape cross-arm with U-shaped anchor ear and appended claims
120 are fixedly connected on power transmission rod.Unlike embodiment one and embodiment two, in the present embodiment, the horizontal stroke of horizontal part 20
Cross section 22 is I shape.It can be seen that on the premise of the most identical materials of equal area, I-shaped cross-section is vertically from above-mentioned table
Bending rigidity in face is maximum, so special-shaped cross-arm 110 can resist the moment of flexure of wire effect in vertical plane.
Vertical portion 21 is cylindrical rod piece, vertical portion 21 and horizontal part 20 be one, the entirety of compression molding, its material with
Horizontal part is identical.Unlike embodiment one and embodiment two, in the present embodiment, vertical portion 21 is not provided with full skirt.Aobvious
So on vertical portion 21, full skirt can also be set, by first molding, then be socketed on the rod member of vertical portion 21, or directly on rod member
Vacuum injection molding.Obviously vertical portion 21 can also be cross section be the cylindricality rod member of rectangle, polygon etc..The end of vertical portion 21
Portion is provided with union joint 23, and this union joint 23 is used for connecting wire, in the present embodiment the structure of union joint 23 and embodiment one
In identical, do not repeat them here.
As shown in figure 13, in the present embodiment, the body of rod 24 of power transmission rod and special-shaped cross-arm 120, for double circuit line, need
Six conductors to be supported, so be provided with three special-shaped cross-arms 120 altogether on the body of rod 24 of power transmission rod.Wire passes through vertical portion 21
On union joint 23 be fixed on special-shaped cross-arm 120, each special-shaped cross-arm 120 is embraced by the installing hole on horizontal part 20 and U-shaped
The securing members such as hoop and bolt are fixed on the body of rod 24 of power transmission rod.
In the present embodiment, vertical portion 21 is not provided with full skirt, it is clear that the cross-arm in double loop can also be such as Figure 14 institute
The special-shaped cross-arm of the band cluster parachute shown.
In the present embodiment, three special-shaped cross-arms 120 are set in parallel in the body of rod 24 same of power transmission rod in vertical plane
Side, it is clear that one of them special-shaped cross-arm 120 can also be arranged on the opposite side of the body of rod 24 of power transmission rod, so can make power transmission rod
The stress of the body of rod 24 more equalize.
In the present embodiment, special-shaped cross-arm 120 is provided with installing hole, it is clear that can not also beat on special-shaped cross-arm
Hole, uses as in Figure 16 to Figure 19 or in embodiment one, embodiment two or abnormal shape cross-arm is consolidated by the fixture of other equivalents
It is scheduled on the body of rod.The anchor ear of body of rod connector peripheral outer wall besieged with the body of rod matches, and the cavity volume of cross-arm accommodating member is with different
The outer wall that type cross-arm is circumferentially surrounded matches.Wherein, in Figure 16 and Figure 17, the body of rod is surrounded by body of rod connector entirely, and this is optimum
The mode of choosing, can Baoding body of rod securely.Certainly cross-arm accommodating member can also surround special-shaped cross-arm entirely.Use this fixture
Fixing special-shaped cross-arm and the body of rod, it is not necessary to punch on special-shaped cross-arm, it is ensured that the mechanical property of special-shaped cross-arm, it is to avoid special-shaped cross-arm
Fracture, the fault that wire goes offline occurs.
Technology contents of the present utility model and technical characterstic have revealed that as above, it being understood, however, that of the present utility model
Under creative ideas, said structure and material can be made various changes and improve by those skilled in the art, including the most independent
The combination of the technical characteristic disclosed or claim, it will be apparent that include other combination of these features.These deformation and/or combination
Each fall within the technical field involved by this utility model, and fall into this utility model scope of the claims.
Claims (20)
1. a special-shaped cross-arm, for power transmission rod, it is characterised in that: described special-shaped cross-arm includes horizontal part and is positioned at described level
The vertical portion at two ends, portion, described horizontal part is fixed on described power transmission rod, and described vertical portion is used for connecting wire, described special-shaped horizontal
Carry on a shoulder pole one-body molded.
2. special-shaped cross-arm as claimed in claim 1, it is characterised in that: described special-shaped cross-arm also includes being arranged on described horizontal part
Upper, in the 3rd vertical portion between vertical portion described in two, described vertical portion is used for connecting wire, described special-shaped cross-arm one
Molding.
3. special-shaped cross-arm as claimed in claim 1, it is characterised in that: described special-shaped cross-arm is composite material cross arm.
4. special-shaped cross-arm as claimed in claim 1, it is characterised in that: described special-shaped cross-arm is by one, compression molding.
5. special-shaped cross-arm as claimed in claim 1, it is characterised in that: in vertical plane, vertical portion described in two is positioned at described water
The top in flat portion.
6. special-shaped cross-arm as claimed in claim 1, it is characterised in that: described vertical portion is outside equipped with silicon rubber umbrella skirt.
7. special-shaped cross-arm as claimed in claim 6, it is characterised in that: at least three umbrella sheet is set on described vertical portion.
8. special-shaped cross-arm as claimed in claim 7, it is characterised in that: described silicon rubber umbrella skirt is directly socketed in described vertical portion
Go up or direct injection molding outside described vertical portion.
9. special-shaped cross-arm as claimed in claim 1, it is characterised in that: the cross section of described horizontal part is hollow rectangle.
10. special-shaped cross-arm as claimed in claim 1, it is characterised in that: it is formed on described vertical portion and can support described wire
Supporting part, it can be by described wire restraint on described vertical portion.
11. special-shaped cross-arms as claimed in claim 10, it is characterised in that: described supporting part includes being formed on described vertical portion
Groove, described groove can house described wire.
12. special-shaped cross-arms as claimed in claim 10, it is characterised in that: described supporting part includes connect fixing with described vertical portion
Connect and for supporting the union joint of wire, described union joint is fixed at least one end of described vertical portion.
13. special-shaped cross-arms as claimed in claim 12, it is characterised in that: offer on described union joint and house described wire
Groove, so that described wire is limited on described vertical portion through described groove.
14. special-shaped cross-arms as claimed in claim 13, it is characterised in that: described special-shaped cross-arm also includes the first connector, institute
State the first connector and described union joint Joint, with by described wire restraint in described groove.
15. 1 kinds of power transmission rods, including the body of rod, it is characterised in that: arrange arbitrary just like in claim 1 to 14 on described power transmission rod
Special-shaped cross-arm described in Xiang.
16. power transmission rods as claimed in claim 15, it is characterised in that: described power transmission rod includes fixture, and described fixture is used
In fixing described abnormity cross-arm and the described body of rod, described fixture includes body of rod connector and cross-arm accommodating member, and the described body of rod is even
Fitting is used for connecting the described body of rod and described cross-arm accommodating member, and described cross-arm accommodating member is used for housing described special-shaped cross-arm.
17. power transmission rods as claimed in claim 16, it is characterised in that: described cross-arm accommodating member is along the circumference of described special-shaped cross-arm
Surround described special-shaped cross-arm.
18. power transmission rods as claimed in claim 16, it is characterised in that: described body of rod connector circumferentially surrounding along the described body of rod
The described body of rod.
19. power transmission rods as claimed in claim 16, it is characterised in that: the cavity volume inwall of described cross-arm accommodating member be contained in it
The outer surface of interior described special-shaped cross-arm matches.
20. power transmission rods as claimed in claim 18, it is characterised in that: the inwall of described body of rod connector with surround within it
The outer surface of the described body of rod matches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620554425.1U CN205822893U (en) | 2016-06-08 | 2016-06-08 | A kind of special-shaped cross-arm and power transmission rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620554425.1U CN205822893U (en) | 2016-06-08 | 2016-06-08 | A kind of special-shaped cross-arm and power transmission rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205822893U true CN205822893U (en) | 2016-12-21 |
Family
ID=57569376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620554425.1U Active CN205822893U (en) | 2016-06-08 | 2016-06-08 | A kind of special-shaped cross-arm and power transmission rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205822893U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105952235A (en) * | 2016-06-08 | 2016-09-21 | 江苏神马电力股份有限公司 | Special-shaped cross arm and power transmission pole |
| WO2017211208A1 (en) * | 2016-06-08 | 2017-12-14 | 江苏神马电力股份有限公司 | Fixing device and transmission mast |
-
2016
- 2016-06-08 CN CN201620554425.1U patent/CN205822893U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105952235A (en) * | 2016-06-08 | 2016-09-21 | 江苏神马电力股份有限公司 | Special-shaped cross arm and power transmission pole |
| WO2017211208A1 (en) * | 2016-06-08 | 2017-12-14 | 江苏神马电力股份有限公司 | Fixing device and transmission mast |
| CN105952235B (en) * | 2016-06-08 | 2019-07-12 | 江苏神马电力股份有限公司 | A kind of abnormal shape cross-arm and power transmission rod |
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