CN205476796U - Composite construction cross arm - Google Patents
Composite construction cross arm Download PDFInfo
- Publication number
- CN205476796U CN205476796U CN201620244532.4U CN201620244532U CN205476796U CN 205476796 U CN205476796 U CN 205476796U CN 201620244532 U CN201620244532 U CN 201620244532U CN 205476796 U CN205476796 U CN 205476796U
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- Prior art keywords
- arm
- cross
- unsaturated polyester
- composite construction
- cross arm
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Abstract
The utility model provides a composite construction cross arm, composite construction cross arm's cross section is annular laminated composite structure, and is the 1st unsaturated polyester carpet veneer (12), the 1st alkali -free glass fiber layer (13), the 2nd unsaturated polyester carpet veneer (14) in proper order from the inlayer to the skin. Unsaturated polyester carpet veneer wherein mainly provides the cross arm product horizontal mechanical properties, reduce its degree of disturbing, the alkali -free glass fiber layer mainly provides cross arm overall product's mechanical properties, with traditional steel cross arm, wooden cross arm, epoxy system combined material cross arm is compared with unsaturated polyester resins system combined material cross arm, not only degree of disturbing is littleer, its mechanical strength is also far above other systems combined material cross arm, can obtain higher mechanical strength with thin thickness, be favorable to alleviateing the erection weight of cross arm, and this composite construction cross arm's weather resistance is excellent, still can punch at will and do not influence its whole mechanical properties, and simple to operate, and the safety reliability after the installation is high.
Description
Technical field
This utility model relates to the cross-arm being applied in overhead transmission line, especially relates to be applied to overhead transmission line
A kind of composite construction cross-arm in installing rack.
Background technology
At present, in electrical network set up, commonly use overhead transmission line installing rack install to the erection carrying out power transmission cable,
Existing overhead transmission line installing rack mainly includes shaft tower and cross-arm, fixedly mounts several and connect ring on cross-arm,
Power transmission cable between adjacent shaft tower sets up by connecting ring, and cross-arm therein mainly uses steel cross-arm, wooden
Cross-arm, epoxy systems composite material cross arm and unsaturated-resin system composite material cross arm.
For steel cross-arm, although its mechanical strength is reliable, but, itself heavier-weight, transport, installation cost
The highest, and, steel cross-arm is easily affected by the external environment, and weatherability is bad, especially applies in corrosivity
During gas seriously area, coastal area and awful weather area, its potential potential safety hazard is many, and service life is the most corresponding
Shorten.Although and relatively steel cross-arm is lighter in wooden cross-arm weight, but its overall mechanical properties is poor, its weatherability
The most bad, the easy moisture absorption is gone mouldy, and causes its potential potential safety hazard the most, and service life is shorter.And for epoxy body
Composite material cross-arm, unsaturated-resin system composite material cross arm, although the steel that these composite material cross arms are more traditional
Matter cross-arm, wooden cross-arm are more environmentally-friendly, energy-conservation, but it there is also following defect: degree of disturbing is too big, in the case of external force
Deflection more than steel material cross-arm；The weatherabilities such as anti-ultraviolet ageing are more weak, constrain its service life；It addition,
Its punching performance is the most poor, cross-arm bulk strength can cause in the case of punching certain impact, punch the easiest meanwhile
Cause stress to concentrate, reduce the mechanical strength of cross-arm, thus cause the potential safety hazard after cross-arm installation.
Utility model content
The technical problems to be solved in the utility model is: the problem existed for prior art, it is provided that a kind of composite construction
Cross-arm, not only mechanical strength is reliable, and improves weatherability and the punching performance of cross-arm goods.
The technical problems to be solved in the utility model realizes by the following technical solutions: a kind of composite construction cross-arm, bag
Including cross-arm, the cross section of described cross-arm is the layered composite structure of annular, and is the first insatiable hunger successively from internal layer to outer layer
With polyester carpet veneer, the first alkali-free glass fibre layer, the second unsaturated polyester (UP) carpet veneer.
Preferably, described cross-arm is the annular lamellar composite construction of hollow.
Preferably, filled polyurethane formation of foam polyurethane foam packing layer in the hollow cavity of described cross-arm.
Preferably, described cross-arm utilizes plastic cement end-blocking to seal cross arm end.
Preferably, the second alkali-free glass fibre layer, the 3rd unsaturated polyester (UP) carpet veneer, described second alkali-free glass are also included
Fibrous layer is coated with and is fixedly arranged at the second unsaturated polyester (UP) carpet veneer outer surface, and described 3rd unsaturated polyester (UP) carpet veneer is coated with and solid
Knot is at the second alkali-free glass fibre layer outer surface.
Preferably, the outer surface of described 3rd unsaturated polyester (UP) carpet veneer coats antiaging coatings.
Preferably, described antiaging coatings is aliphatic polyurethane coating.
Preferably, described cross-arm be cross section be square column.
Preferably, the corner of described cross-arm is processed to form fillet surface respectively.
Preferably, also include that installing plate and anchor ear, described installing plate and anchor ear are fixedly connected into " ten " character form structure,
Fix between described anchor ear and cross-arm and be connected.
Compared with prior art, the beneficial effects of the utility model are: by using unsaturated polyester (UP) carpet veneer, alkali-free glass
Glass fibrous layer alternately consolidation is shaped to the layered composite structure cross-arm that cross section is annular, unsaturated polyester (UP) carpet veneer therein
With the enhancing phase that alkali-free glass fibre layer is mainly cross-arm product, jointly provide mechanical performance for whole cross-arm goods, its
In, unsaturated polyester (UP) carpet veneer mainly provides the mechanical performance that cross-arm product is horizontal, lowers its degree of disturbing, alkali-free glass fibre
The main mechanical performance providing cross-arm product overall of layer, is combined with traditional steel cross-arm, wooden cross-arm, epoxy systems
Material cross-arm is compared with unsaturated-resin system composite material cross arm, and not only degree of disturbing is less, and its mechanical strength is also far above
Other system composite material cross arms, accordingly, it is capable to obtain higher mechanical strength with relatively thin thickness, thus significantly alleviate
The erection weight of cross-arm；And, the weather resistance of composite construction cross-arm of the present utility model is excellent, even if in corrosion
Property gas seriously area, coastal area and awful weather area, all can life-time service；It addition, it is of the present utility model multiple
Close structure cross-arm also can arbitrarily punch and not affect its overall mechanical properties, therefore, it can according to its mounting means horizontal stroke
Load goods punch, and to facilitate it to install, and the safety reliability after installation is high.
Accompanying drawing explanation
Fig. 1 is the profile of this utility model a kind of composite construction cross-arm.
Fig. 2 is the manufacturing process flow diagram of composite construction cross-arm shown in Fig. 1.
Fig. 3 is the structural map (front view) of overhead transmission line installing rack.
Fig. 4 is the structural map (top view) of overhead transmission line installing rack.
In figure, component token name claims: 1-cross-arm, 2-installing plate, 3-fastening connection piece, 4-anchor ear, 5-backing plate, and 6-is even
T-Ring, 7-shaft tower, 8-connecting rod, 11-polyurethane foam packing layer, 12-the first unsaturated polyester (UP) carpet veneer, 13-first
Alkali-free glass fibre layer, 14-the second unsaturated polyester (UP) carpet veneer, 15-the second alkali-free glass fibre layer, 16-the 3rd is unsaturated
Polyester carpet veneer, 17-antiaging coatings, 18-fillet surface.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with the accompanying drawings and specifically
This utility model is described in detail by embodiment.Should be appreciated that specific embodiment described herein is only in order to solve
Release this utility model, be not used to limit this utility model.
Cross-arm 1 as shown in Figure 1, its cross section is the layered composite structure of annular, is the from internal layer to outer layer successively
One unsaturated polyester (UP) carpet veneer the 12, first alkali-free glass fibre layer the 13, second unsaturated polyester (UP) carpet veneer 14.Second not
Saturated polyester carpet veneer 14 outer surface can also be coated with the second alkali-free glass fibre layer 15 of annular, described second alkali-free glass
Glass fibrous layer 15 is consolidated molding by alkali-free glass fibre；In the second alkali-free glass fibre layer 15 outer surface cladding annular
3rd unsaturated polyester (UP) carpet veneer 16, described 3rd unsaturated polyester (UP) carpet veneer 16 is consolidated molding by unsaturated polyester (UP) felt.Its
In unsaturated polyester (UP) carpet veneer and alkali-free glass fibre layer be mainly the enhancing phase of cross-arm 1 product, is whole cross-arm jointly
1 goods provide mechanical performance, and wherein, unsaturated polyester (UP) carpet veneer mainly provides the mechanical performance that cross-arm 1 product is horizontal,
Lowering its degree of disturbing, alkali-free glass fibre layer mainly provides the mechanical performance that cross-arm 1 product is overall.It addition, described
Antiaging coatings 17 can also be coated, as whole cross-arm 1 product on the outer surface of three unsaturated polyester (UP) carpet veneers 16
Weather resistant coatings；Generally, described antiaging coatings 17 is to use formation after aliphatic polyurethane coating certain thickness.
Ageing-resistant, the resistance against ultraviolet and yellowing of cross-arm 1 product can be substantially improved by antiaging coatings 17, thus greatly
Width improves the service life of cross-arm 1 product, also makes cross-arm 1 product more can be suitably used for extreme environment simultaneously.
As it is shown in figure 1, described cross-arm 1 can also be the annular lamellar composite construction of hollow, and, at cross-arm 1
Hollow cavity in can with filled polyurethane formation of foam polyurethane foam packing layer 11, and utilize plastic cement block to horizontal stroke
Carry on a shoulder pole 1 goods and carry out end seals, so can improve the rigidity of cross-arm 1 further.By the cavity at cross-arm 1
Body is internally formed polyurethane foam packing layer 11, so that this composite material cross arm product is same conveniently carry out punching
Time, also will not reduce the mechanical strength of this cross-arm product, meanwhile, also there is auxiliary and lower the effect of cross-arm degree of disturbing.
After described cross-arm 1 goods use layered composite structure as shown in Figure 1, by laying unsaturated polyester (UP) at interlayer
Carpet veneer, can improve hoop intensity and the machinability of cross-arm goods, lowers the degree of disturbing of cross-arm product.Need
Bright, described unsaturated polyester (UP) carpet veneer is not limited to first above-mentioned unsaturated polyester (UP) carpet veneer the 12, second unsaturated polyester
Ester carpet veneer the 14, the 3rd unsaturated polyester (UP) carpet veneer 16, can be according to layered composite structure order rule paving as shown in Figure 1
If the unsaturated polyester (UP) carpet veneer of multiple structure, such as, 3 layers, 4 layers, 5 layers, 6 layers, even more multilamellar, so may be used
So that cross-arm goods significantly reduce on degree of disturbing, the cross-arm product of part specification can not use additional Holder Fasteners
I.e. can be used directly, the cross-arm product of part specification adds simple Holder Fasteners and just can reach use standard.Compare
In traditional epoxy systems composite material cross arm and unsaturated-resin system composite material cross arm, horizontal stroke is not only greatly improved
Load mechanical strength, meanwhile, under the conditions of reaching equal mechanical strength, this cross-arm goods gentlier, thinner, thus
Easily facilitate transport, install.
The cross-arm 1 of layered composite structure as shown in Figure 1, can use dual-component polyurethane resin as matrix resin,
Using alkali-free glass fibre band and unsaturated polyester (UP) felt as strengthening phase, prepared by pultrude process.Wherein, polyurethane tree
Fat has the difference of one-component and double-component, and the polyurethane resin of one-component need not mixing, directly heats or room temperature contact
Moisture in air just can solidify, and the polyurethane resin of double-component typically divides A, B component, the whitest material and black material,
Need to mix both components, then carry out heating just can solidifying.
Composite construction cross-arm of the present utility model, its manufacturing process is as in figure 2 it is shown, specifically include following steps:
1st step, according to the section interlayer structure of cross-arm 1, is carried out unsaturated polyester (UP) felt, alkali-free glass fibre band
Storied placement.Generally, it is that unsaturated polyester (UP) felt and alkali-free glass fibre band are placed on creel, and according to such as Fig. 1
Shown cross-arm section interlayer structure is arranged, and one layer is unsaturated polyester (UP) felt, and one layer is alkali-free glass fibre band,
Unsaturated polyester (UP) felt, the storied placement of alkali-free glass fibre band is completed accordingly on creel.
2nd step, uses dual-component polyurethane resin to soak continuously on unsaturated polyester (UP) felt, alkali-free glass fibre band
Glue processes.Generally, it is that to draw the unsaturated polyester (UP) felt arranged, alkali-free glass fibre band by traction link seat continuous
By injection system, injection system continue to inject the poly-ammonia of double-component to unsaturated polyester (UP) felt, alkali-free glass fibre band
Ester resin, to carry out continuous dipping process to unsaturated polyester (UP) felt, alkali-free glass fibre band.Carrying out dipping process
Time, in the range of the injection pressure of injection system needs to be maintained at certain pressure value, generally, the scope of this force value is
3Mpa-6Mpa, so that unsaturated polyester (UP) felt, the continuous impregnation of alkali-free glass fibre band are complete.
In order to make injection system uniform, abundant to the continuous impregnation of unsaturated polyester (UP) felt, alkali-free glass fibre band, can
So that injection system is equipped with vacuum heating system, so that the dual-component polyurethane resin injected is carried out deaeration and reduction respectively
Viscosity processes.According to the requirement of strength of cross-arm goods, the inclined heated plate at this is typically 5min-20min, after process
Range of viscosities generally at 500-1500Pa s, preferably 1000Pa s.After carrying out deaeration and reducing viscosity process,
Syringe case is injected, with to the unsaturated polyester (UP) felt arranged, alkali-free glass after making dual-component polyurethane mixed with resin again
Fiber band carries out continuous dipping process.
3rd step, the curing molding of cross-arm goods.Through the complete unsaturated polyester (UP) felt of dipping process, alkali-free glass
Fiber band continues through the die cavity of cross-arm goods mould under the traction of traction link seat, by cross-arm goods mould to impregnation
Complete unsaturated polyester (UP) felt, alkali-free glass fibre band are heating and curing, and are allowed to molding.
3 heated zones are generally set on described cross-arm goods mould, along the lead of traction link seat, first,
The complete unsaturated polyester (UP) felt of impregnation, alkali-free glass fibre band enter the first heated zones and are heating and curing, and this adds
Hot temperature is 100-160 DEG C, is heating and curing subsequently into the second heated zones, and this heating-up temperature is 120-180
DEG C, finally entering the 3rd heated zones and be heating and curing, this heating-up temperature is 100-150 DEG C.By arranging first
Heated zones, the second heated zones, the 3rd heated zones totally 3 heated zones, primarily to control by temperature
Response speed processed, and then control product curing rate, to improve the uniformity that is heating and curing, promote the cross-arm system after molding
The mechanical strength of product.Generally, stop to from the 3rd heated zones output from entering the first heated zones, total hardening time
For 1min-20min, according to cross-arm section interlayer structure rule as shown in Figure 1, the compound number of plies of cross-arm goods is the most,
Total hardening time the most correspondingly increases.
4th step, the post-treatment of molding cross-arm goods.For the cross-arm 1 after curing molding, polyurethane foam can be used
It is filled with inside hollow cavity to cross-arm 1 goods, then, at its outer surface coating aliphatic polyurethane as horizontal stroke
The antiaging coatings 17 of load 1, finally, carries out cutting section according to required dimensions, utilizes plastic cement to block horizontal stroke
Carry on a shoulder pole 1 end to seal, pack to obtain cross-arm finished product.Wherein, innermost layer is polyurethane foam packing layer 11, and it is permissible
There is provided rigidity for cross-arm 1 product entirety, and reduce its degree of disturbing；It is unsaturated polyester (UP) carpet veneer, alkali-free glass fibre afterwards
The alternately superposition of layer, unsaturated polyester (UP) carpet veneer therein can arrange 3-6 layer, this unsaturated polyester (UP) carpet veneer predominantly horizontal stroke
Carry on a shoulder pole the enhancing phase of 1 product, act primarily as strengthening action, provide major part mechanical performance for whole cross-arm 1 goods；Outermost
The antiaging coatings 17 that layer is formed for aliphatic polyurethane coating, it can be that the offer of whole cross-arm 1 product is good resistance to
Hou Xing.
Owing to above-mentioned cross-arm 1 goods are mainly used in overhead transmission line installing rack as shown in Figure 3, Figure 4,
Described overhead transmission line installing rack includes cross-arm 1, installing plate 2, anchor ear 4, connects ring 6 and shaft tower 7 and connect
Extension bar 8.The installation of cross-arm 1 for convenience, can punch to cross-arm 1 accordingly according to its mounting means, with
Facilitate the installation between connecting rod 8, anchor ear 4 and cross-arm 1.Run through connection on described cross-arm 1 and have connecting rod 8, described
Connecting rod 8 two ends are threaded ends, and respectively be connected ring 6 and form screw thread and be flexibly connected, connect ring 6 with
Can arrange backing plate 5 between cross-arm 1, described backing plate 5 is socketed with connecting rod 8, and arranging backing plate 5 can increase connection
Contact area between ring 6 and cross-arm 1, improves the stable connection connecting ring 6.Described anchor ear 4 is U-lag
Shape structure, installs cross-arm 1 in the U-lag of anchor ear 4, and utilizes fastening connection piece 3, such as rivet, make horizontal stroke
Load 1 and anchor ear 4 are fixedly connected into one.Described cross-arm 1 can be cross section be square column, such as Fig. 1
Shown in, so, after cross-arm 1 snaps fit onto the U-lag of anchor ear 4, it can be ensured that cross-arm 1 will not be relative to anchor ear 4
Rotate, thus ensure the connection reliability between anchor ear 4 and cross-arm 1；Further, at the corner of described cross-arm 1
Place is processed to form fillet surface 18 respectively, arranges fillet surface 18 so that cross-arm 1 more easily snaps fit onto the U of anchor ear 4
Shape groove, and guarantee that both put in place in mutual clamping.
Fix between described installing plate 2 side and anchor ear 4 and be connected, such as, between described installing plate 2 and anchor ear 4
" ten " character form structure can be fixedly connected into welding manner or riveting method, and the opposite side of installing plate 2 and shaft tower
Utilize fastening connection piece 3, such as rivet between 7, be fixedly connected.Wherein, as shown in Figure 4, described peace
Dress plate 2 uses v-shaped structure plate, the octagon structure that cross sectional shape is hollow of described shaft tower 7, therefore, installs
V-shaped groove on plate 2 can hold shaft tower 7 tightly, and this structure is so that installing plate 2 has certain elasticity, it is ensured that
Contact good between installing plate 2 with shaft tower 7, and make installing plate 2, shaft tower 7 obtain certain interference rejection ability, improve
Installing plate 2, the impact resistance of shaft tower 7, thus improve the attachment security between installing plate 2 and shaft tower 7 can
By property, be conducive to improving the overall safety reliability of overhead transmission line installing rack and service life.As it is shown on figure 3,
Installing plate 2 is offered a number of installation through hole, utilizes fastening connection piece 3, such as rivet, logical by installing
Installing plate 2 is run through to make to be fixedly connected between installing plate 2 and shaft tower 7 one in hole, improves overhead transmission line
The installation effectiveness that installing rack is overall.Installation through hole preferred 8-shaped through hole on described installing plate 2 or U-shaped otch,
Can there to be certain mounting and adjusting surplus when installing at the scene between installing plate 2 and shaft tower 7.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, it should refer to
Go out, all any amendment, equivalent and improvement etc. made within spirit of the present utility model and principle, all
Within protection domain of the present utility model should be included in.
Claims (10)
1. a composite construction cross-arm, including cross-arm (1), it is characterised in that: the cross section of described cross-arm (1) is
The layered composite structure of annular, and be the first unsaturated polyester (UP) carpet veneer (12), the first alkali-free glass successively from internal layer to outer layer
Glass fibrous layer (13), the second unsaturated polyester (UP) carpet veneer (14).
A kind of composite construction cross-arm the most according to claim 1, it is characterised in that: during described cross-arm (1) is
Empty annular lamellar composite construction.
A kind of composite construction cross-arm the most according to claim 2, it is characterised in that: in described cross-arm (1)
Filled polyurethane formation of foam polyurethane foam packing layer (11) in cavity body.
A kind of composite construction cross-arm the most according to claim 3, it is characterised in that: described cross-arm (1) utilizes
Cross arm end is sealed by plastic cement end-blocking.
5. according to a kind of composite construction cross-arm described in any one of claim 1-4, it is characterised in that: also include second
Alkali-free glass fibre layer (15), the 3rd unsaturated polyester (UP) carpet veneer (16), described second alkali-free glass fibre layer (15)
It is coated with and is fixedly arranged at the second unsaturated polyester (UP) carpet veneer (14) outer surface, described 3rd unsaturated polyester (UP) carpet veneer (16) bag
Cover and be fixedly arranged at the second alkali-free glass fibre layer (15) outer surface.
A kind of composite construction cross-arm the most according to claim 5, it is characterised in that: described 3rd unsaturated polyester (UP)
Antiaging coatings (17) is coated on the outer surface of carpet veneer (16).
A kind of composite construction cross-arm the most according to claim 6, it is characterised in that: described antiaging coatings (17)
It it is aliphatic polyurethane coating.
8. according to a kind of composite construction cross-arm described in any one of claim 1-4, it is characterised in that: described cross-arm (1)
Be cross section be square column.
A kind of composite construction cross-arm the most according to claim 8, it is characterised in that: turning of described cross-arm (1)
Fillet surface (18) it is processed to form respectively at angle.
10. according to a kind of composite construction cross-arm described in any one of claim 1-4, it is characterised in that: also include peace
Dress plate (2) and anchor ear (4), described installing plate (2) and anchor ear (4) are fixedly connected into " ten " character form structure, institute
State fixing between anchor ear (4) with cross-arm (1) connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620244532.4U CN205476796U (en) | 2016-03-25 | 2016-03-25 | Composite construction cross arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620244532.4U CN205476796U (en) | 2016-03-25 | 2016-03-25 | Composite construction cross arm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205476796U true CN205476796U (en) | 2016-08-17 |
Family
ID=56648148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620244532.4U Expired - Fee Related CN205476796U (en) | 2016-03-25 | 2016-03-25 | Composite construction cross arm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205476796U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105715095A (en) * | 2016-03-25 | 2016-06-29 | 四川省众能新材料技术开发有限公司 | Composite structure crossarm and manufacturing process thereof |
| CN109812119A (en) * | 2019-01-16 | 2019-05-28 | 保定方圆电力线路器材有限公司 | A kind of composite construction cross-arm and its manufacturing process |
-
2016
- 2016-03-25 CN CN201620244532.4U patent/CN205476796U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105715095A (en) * | 2016-03-25 | 2016-06-29 | 四川省众能新材料技术开发有限公司 | Composite structure crossarm and manufacturing process thereof |
| CN105715095B (en) * | 2016-03-25 | 2018-10-19 | 四川省众能新材料技术开发有限公司 | A kind of composite construction cross-arm and its manufacturing process |
| CN109812119A (en) * | 2019-01-16 | 2019-05-28 | 保定方圆电力线路器材有限公司 | A kind of composite construction cross-arm and its manufacturing process |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 Termination date: 20210325 |