CN107379578B - A kind of forming method of contact net support device - Google Patents
A kind of forming method of contact net support device Download PDFInfo
- Publication number
- CN107379578B CN107379578B CN201710640557.5A CN201710640557A CN107379578B CN 107379578 B CN107379578 B CN 107379578B CN 201710640557 A CN201710640557 A CN 201710640557A CN 107379578 B CN107379578 B CN 107379578B
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- China
- Prior art keywords
- cantilever
- linking arm
- core pipe
- glass fibre
- arm
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
- B29C70/46—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs
- B29C70/48—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs and impregnating the reinforcements in the closed mould, e.g. resin transfer moulding [RTM], e.g. by vacuum
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2063/00—Use of EP, i.e. epoxy resins or derivatives thereof, as moulding material
Abstract
This application discloses a kind of forming methods of contact net support device, comprising the following steps: 1) core pipe is processed, and core pipe is processed into Horizontal Cantilever, inclined cantilever, arched arm and linking arm respectively；2) splice bonding after core pipe winding glass fibre；Or glass fibre is wound after core pipe splicing bonding；3) mold clamping, RTM injection, be heating and curing molding；Wherein, the mold is below Horizontal Cantilever, below inclined cantilever, on the inside of arched arm, above linking arm, and glue injection channel is set above the part inclined cantilever between Horizontal Cantilever and linking arm, on the outside of part inclined cantilever upper, arched arm above Horizontal Cantilever, far from linking arm, bleed-off passage is set below linking arm, and bleeding point is set on the part inclined cantilever between Horizontal Cantilever and linking arm.Contact net support device forming method provided by the present application simply, efficiently prepares support device, meanwhile, prepared contact net support device is light-weight, intensity is high, good insulation preformance.
Description
Technical field
This application involves electrified track technical field of transportation, more particularly to a kind of molding side of contact net support device
Method.
Background technique
Contact net is the transmission line of electricity powered to electric locomotive set up along rail line overhead, in outdoor complicated ring
It is operated under border, the operation security of stability and the rail traffic of safety direct relation.Contact net support device is mounted on support
On column, to support overhead contact line, and play the role of transfer charge.Suspension arrangement is required to have in actual use enough
Mechanical strength, structure is simple as far as possible, light and handy, easy installation and maintenance replacement.
And existing contact net support device is mainly steel cantilever support device and support device for aluminium alloy cantilever.Both
Support device has more than ten or even tens components to pass through hinged and the forms such as be bolted and be formed by connecting, installation maintenance work
Amount is big and construction quality is difficult to ensure, while insulator price is also higher.
Summary of the invention
In order to solve the above technical problems, the object of the invention be provide a kind of contact net support device forming method it is simple,
Contact net support device efficiently is prepared, meanwhile, prepared contact net support device is light-weight, intensity is high, with excellent exhausted
Edge performance adapts to various weather conditions, can improve contact net reliability, reduces installation and maintenance work difficulty.
Technical solution provided by the invention is as follows:
A kind of forming method of contact net support device, comprising the following steps:
1) core pipe is processed, and core pipe is processed into Horizontal Cantilever, inclined cantilever, arched arm and linking arm respectively；
2) splice bonding after core pipe winding glass fibre；Or glass fibre is wound after core pipe splicing bonding；
3) mold clamping, RTM injection, be heating and curing molding；
Wherein, the mold is below Horizontal Cantilever, below inclined cantilever, on the inside of arched arm, above linking arm, and is located at flat
Glue injection channel is set above part inclined cantilever between bracket and linking arm, the part above Horizontal Cantilever, far from linking arm is oblique
On the outside of bracket upper, arched arm, bleed-off passage is set, and in the portion between Horizontal Cantilever and linking arm below linking arm
Divide on inclined cantilever and bleeding point is set.
Preferably, the glue injection channel of the mold and bleed-off passage are along the Horizontal Cantilever, inclined cantilever, arched arm or linking arm
It is symmetrically arranged, 1-8 bleeding point, the pumping is arranged in mold on the part inclined cantilever between Horizontal Cantilever and linking arm
Port is arranged in the front and rear sides of the part inclined cantilever between Horizontal Cantilever and linking arm, the inclined cantilever front and rear sides pumping
The line of mouth, it is perpendicular with the line of double glue injection channels on the part inclined cantilever between Horizontal Cantilever and linking arm.
Preferably, total gum-injecting port is arranged below the one end of inclined cantilever far from linking arm in the mold, in Horizontal Cantilever and company
It connects arm stitching portion and total bleeding point is set.
Preferably, in step 1), the core pipe be epoxy pultrusion pipe, pvc pipe, PP-R pipe it is any.
Preferably, in step 2), when using winding the method for glass fibre after core pipe splicing bonding, first splice core pipe,
Bonding, then by glass fibre layered windings in core pipe, every layer of glass fibre staggered floor winding is tied at interval of 1-3 layers of glass fibre
It ties up once, crossover sites use glass fiber winding reinforcement.
Preferably, every layer of glass fibre staggered floor 15-60mm is wound, and the glass fibre wound in core pipe is with a thickness of 5-15mm.
Preferably, in step 2), when using splicing the method for bonding after core pipe winding glass fibre, first glass fibre is twined
It is wound on Horizontal Cantilever, inclined cantilever, arched arm and linking arm, then each core pipe after winding glass fibre is spliced, bonding.
Preferably, the RTM injection uses high insulating epoxy.
Preferably, in step 3), the core pipe after winding is put into mold, is molded, by resin from total gum-injecting port of mold
Injection, vacuumizes into glue injection channel, while from total bleeding point of mold and each bleeding point, when resin from the total bleeding point of mold and
Stop injection when flowing out in each bleeding point.
Preferably, in step 3), heating temperature is 70-120 DEG C, heating time 4-10h, cooling, removes gel-injection mould, obtains
To molding contact net support device.
RTM injection refers to that resin transfer moulding (Resin TransferMoulding) is injected, injects resin into closure
Mold summarizes infiltration reinforcing material and a kind of cured technique.
Usually selective injecting glue mode has point-to-point injection, line to line injection, exterior contour to central point to inject three kinds
Mode.At the same pressure, the mode that exterior contour is injected to central point is most fast, and followed by line to line is injected, and is that point arrives again
Point injection.In view of contact net support device structure of the invention is complicated, it is about 2-5m, high 1-3m, and width only has each bracket
The width (about 0.05-0.3m) of diameter, belongs to flat component, and injecting glue difficulty is big；And contact net support device sheet of the invention
As structure and crossover sites it is more, structure is complicated, it is difficult to determine quantity and the position of injection point, it is also difficult to from exterior contour to
Central point injection, therefore it is not considered as point-to-point injection and exterior contour to the mode injected to central point, final determination is adopted
With the injection system of line to line.In practical preparation, by the way of the injection of vacuum pump assisted RTM, it is possible to use vasopressing injection
Mode cooperates injection.Vacuum aided helps to reduce the stomata in contact net support device obtained, improves final product quality.
Line to line injection, the whole installation principle of gel-injection mould are that from the inside to the outside, inside setting glue injection channel, outside is set
Set bleed-off passage.Specifically, gel-injection mould is below Horizontal Cantilever, below inclined cantilever, on the inside of arched arm, above linking arm, with
And glue injection channel is set above the part inclined cantilever between Horizontal Cantilever and linking arm, above Horizontal Cantilever, far from linking arm
Part inclined cantilever upper, on the outside of arched arm, bleed-off passage is set below linking arm, and be located at Horizontal Cantilever and linking arm
Between part inclined cantilever on bleeding point is set.It is injected using line to line, injecting glue length is changed into each arm by original several meters
Perimeter (about 0.2-0.6m), so that injecting glue difficulty reduces, the injecting glue time shortens, and obtained finished product support device is high-quality.
The glue injection channel and bleed-off passage of gel-injection mould are right respectively along the Horizontal Cantilever, inclined cantilever, arched arm or linking arm
Claim setting, the resin of injection can be made uniformly to flow to bleed-off passage along each bracket from glue injection channel, it is ensured that resin impregnated entirely fills
It sets, is finally reached that resin is uniform, complete profiled part.The top of part inclined cantilever between Horizontal Cantilever and linking arm and
Lower section is provided with glue injection channel, is double glue injection channels, therefore bleeding point is arranged here.Usually 1-8 bleeding point of setting, institute
State the front and rear sides for the part inclined cantilever that bleeding point is arranged between Horizontal Cantilever and linking arm.Two sides bleeding point can be with mirror image
Setting, also can be set different；The mode for generalling use mirror settings, it is oblique in the part between Horizontal Cantilever and linking arm
1-4 bleeding point is respectively arranged in the front and rear sides of bracket.The line of inclined cantilever front and rear sides bleeding point, be located at Horizontal Cantilever with connect
The line of double glue injection channels on the inclined cantilever of part between arm is perpendicular, and bleeding point and glue injection channel is arranged such, can make
The resin of injection is from the uniform flow up and down of inclined cantilever two sides forwards, backwards, it is ensured that resin is immersed at each position of inclined cantilever.
In the embodiment of the present invention, total gum-injecting port is set below the one end of inclined cantilever far from linking arm in gel-injection mould,
In Horizontal Cantilever and linking arm stitching portion, total bleeding point is set.When carrying out RTM injection, resin is injected from total gum-injecting port, due to setting
There is glue injection channel, the pressure that resin flows to glue injection channel is much smaller than the pressure for being impregnated with bracket, therefore resin can first flow to injecting glue and lead to
Road, and resin fills up the speed of glue injection channel and is far longer than the speed of resin impregnated bracket.Lead to when resin flows into and fills up injecting glue
Behind road, due to the negative pressure vacuumized, resin can be to infiltration be finished, and the pumping for flowing to the other side from the glue injection channel of bracket side is logical
The injection of line to line is realized in road.At the part inclined cantilever with double glue injection channels, due to being provided with bleeding point, resin will be from
Glue injection channel flows to each bleeding point along inclined cantilever, and inclined cantilever is uniformly impregnated with resin.Due to gravity, by branch of the invention
When support arrangement is laid flat into (and making the length of support device and width thick positioned at vertical plane positioned at horizontal plane) gel-injection mould injecting glue,
The gummosis rate of lower semicircular can be greater than top semicircle, but due to being provided with bleeding point and air extractor, resin will eventually be equal
It is even to be impregnated with entire support device gel-injection mould along glue injection channel and bleed-off passage parting.In practical operation, modulus method can be set
Blue side be it is smooth, lower die flange be respectively set from inside to outside glue injection channel or bleed-off passage groove, the first o-ring groove,
Second o-ring groove passes through dual-seal when injecting glue and guarantees injecting glue effect.Outside second o-ring groove, also settable mode locking and
Positioning device.Arc groove can be set by glue injection channel or bleed-off passage groove, by the first o-ring groove, the second sealing ring
Groove is set as square groove.Heating device should be also arranged in mold, be heating and curing after injecting glue.The settable temperature control portion of heating device
The parameters such as temperature and heating rate are arranged either manually or by program in part.
Epoxy pultrusion pipe is usually made of the direct pultrusion of compound polyurethane material, has bending radius small, light-weight, elastic
The advantages that good, ageing-resistant.The main component of pvc pipe is polyvinyl chloride, and other compositions are added enhance its heat resistance, toughness, prolongs
Malleability.Pvc pipe has many advantages, such as from heavy and light, corrosion-resistant, compressive resistance is high.
Epoxy pultrusion pipe is usually made of the direct pultrusion of epoxy composite material, has bending radius small, light-weight, elastic
The advantages that good, ageing-resistant.The main component of pvc pipe is polyvinyl chloride, and other compositions are added enhance its heat resistance, toughness, prolongs
Malleability.Pvc pipe has many advantages, such as from heavy and light, corrosion-resistant, good insulation preformance.The main component of PP-R pipe is polypropylene, insulating properties
Can be good the advantages that.
When winding the method for glass fibre after using core pipe splicing bonding, since support device structure of the invention is multiple
Miscellaneous, crossover sites are more, therefore are not available monolithic glass fiber and once cover, and need multiple laying to wind, then the connector of laying
Mode will affect the mechanical property of the support device of final molding.Mainly since support member of the invention is complex-shaped and hands over
Fork, glass fibre are difficult to be compacted, and crossover sites fiber is difficult to serialization.The laying that then needs to offset one from another in each layer glass fibre twines
Around.In the present invention, the 15-60mm that will be staggered between every layer of glass fibre winding, be such as staggered 20-25 or 30-35mm winding.Ensure
RTM injection is carried out after glass fiber winding, will not influence the mechanical property of integral support device.Simultaneously as length direction by
Power is larger, wind glass fibre when along its length inwardly setting overlap joint transitional region, the junction of Horizontal Cantilever and linking arm,
The setting of the junction of the junction of Horizontal Cantilever and inclined cantilever, the infall of inclined cantilever and linking arm and arched arm and linking arm
Transitional region is overlapped, guarantees the performance of glass fibre laying.Glass fibre docking location by the way of setting agent or sewing into
Row is fixed, and every layer of docking location is arranged in a staggered manner.In addition, it is primary at interval of 1-3 layers of glass fibre binding, such as at interval of 2 layers of glass
Glass fiber, it is primary using the winding binding of dry yarn, play the role of fixed and increase restraining force, it is ensured that glass fibre is in core pipe
Close laying, and gel-injection mould can be smoothly put into without backform.In addition, support device crossover sites are mended using glass fiber winding
By force, as crossover sites use the glass fibre cloth saliva village winding reinforcing of 15-20mm wide.Alkali-free E glass can be selected in glass fibre
Cloth or other glass fibres.The glass fibre thickness of core pipe winding reaches 5-15mm, preferably 7.5-10mm.
Glass fibre laying coats after being cut monolithic glass fiber according to each position shape of support device, can also
It is wound using the glass fibre of strip around each arm.If being coated after being cut according to each position shape of support device,
The connecting portion of each arm connecting portion, especially arched arm and Horizontal Cantilever, linking arm, needs to cut out material, supplementary angle.In general, in each arm master
Glass fibre is directly cut cladding by body portion, uses the glass fiber winding of strip in crossover sites.
When splicing the method for bonding again after using core pipe winding glass fibre, laying flexibility is bigger, occupies mold
Time is shorter, but needs more glue sprayings to be fixed.Glue spraying makes to glue between every layer of glass fibre for being bonded each layer glass fibre
It connects securely.The mold time is occupied compared to integral one-step molding using the method for splicing bonding after core pipe winding glass fibre again
It reduces, but thickness is larger at each arm connection, the position performance is relatively thin weak.
RTM injects the insulating epoxy that uses, should meet viscosity it is low, with fiber wetness is good, validity period is long, volatilization
Divide the requirements such as content is low, shrinking percentage is low.The epoxy-resin systems that can be used have bisphenol A type epoxy resin (such as CYD-128/
IA), alicyclic multi-anhydride (such as TDE-85/TA), bisphenol f type epoxy resin.
High insulating epoxy infiltrates entire support device, and finished product obtained has high-insulativity, is provided simultaneously with contact net
The characteristics such as the intensity of support device, weather-proof can effectively improve support device in the insulation effect of thunderstorm weather, thunder and lightning is avoided to cause
Contact net failure occur.
In general, gel-injection mould coats release agent in advance, then the core pipe after winding glass fibre is put into mold, then
It is put into the first sealing strip, the second sealing strip, molds, gel-injection mould is fixedly clamped.Then start injecting glue and pumping process again.Add
After heat cure, gel-injection mould is removed, after molding contact net support device is taken out, cuts off extra resin, and polish,
Obtain contact net support device free of surface defects.When injecting glue, can be set in 70-120 DEG C of heating 4-10h, such as 80-90 DEG C plus
Hot 5-6h.When cooling, usually to mold temperature be reduced to 50 DEG C hereinafter, removing mold.
The method provided by the present invention preparation contact net support device, meet professional standard physical property, mechanical property,
The requirement of electric property and insulation aspect, is able to bear enough horizontal, vertical loads, cantilever structure do not occur plastic deformation or
Sliding.
The forming method of contact net support construction provided by the invention, it is simple to operation, the support device performance of preparation is good,
Intensity is high, light-weight.By using the composite material of height insulation, the safety of contact net operation is improved；Simultaneously as using
Integral forming process greatly reduces the difficulty and workload of installation and the later maintenance of contact net support device.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The some embodiments recorded in application, for those of ordinary skill in the art, without creative efforts,
It is also possible to obtain other drawings based on these drawings.
Fig. 1 is the schematic diagram of the contact net support device prepared in the embodiment of the present invention；
Fig. 2 is the structural schematic diagram of the contact net support device prepared in the embodiment of the present invention；
Fig. 3 is the gel-injection mould injecting glue of the contact net support device prepared in the embodiment of the present invention, pumping position schematic diagram；
Fig. 4 is injecting glue schematic cross-section (the unilateral glue injection part of the contact net support device prepared in the embodiment of the present invention
Position)；
Fig. 5 is injecting glue schematic cross-section (the bilateral glue injection part of the contact net support device prepared in the embodiment of the present invention
Position)；
Fig. 6 is the gel-injection mould flange arrangement schematic diagram of the contact net support device prepared in the embodiment of the present invention；
Fig. 7 is the glass fibre laying region transfers schematic diagram of the contact net support device prepared in the embodiment of the present invention；
Fig. 8 is every layer of glass fibre sewing schematic diagram of the contact net support device prepared in the embodiment of the present invention；
Appended drawing reference: 1- Horizontal Cantilever；2- inclined cantilever；3- arched arm；4- linking arm；5- bleeding point；The total gum-injecting port of 6-；7- is total
Bleeding point；A- glue injection channel；B- bleed-off passage；C- glass fibre laying transitional region；D- gel-injection mould upper mold flange；E note
Sealing rubber die lower die flange；The first sealing ring of f- gel-injection mould；The second sealing ring of g- gel-injection mould；
Specific embodiment
In order to make those skilled in the art better understand the technical solutions in the application, below in conjunction with the application reality
The attached drawing in example is applied, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described implementation
Example is merely a part but not all of the embodiments of the present application.Based on the embodiment in the application, this field is common
The application protection all should belong in technical staff's every other embodiment obtained without making creative work
Range.
Please be as shown in Figures 1 to 8, the embodiment of the present invention provides a kind of forming method of contact net support device, including with
Lower step:
1) core pipe is processed, and core pipe is processed into Horizontal Cantilever 1, inclined cantilever 2, arched arm 3 and linking arm 4 respectively；
2) splice bonding after core pipe winding glass fibre；Or glass fibre is wound after core pipe splicing bonding；
3) mold clamping, RTM injection, be heating and curing molding；
Wherein, the mold is above 1 lower section of Horizontal Cantilever, 2 lower section of inclined cantilever, 3 inside of arched arm, linking arm 4, Yi Jiwei
Glue injection channel is set above part inclined cantilever 2 between Horizontal Cantilever 1 and linking arm 4, above Horizontal Cantilever 1, far from linking arm 4
2 upper of part inclined cantilever, the outside of arched arm 3, bleed-off passage is set below linking arm 4, and be located at Horizontal Cantilever 1 and even
Connect setting bleeding point 5 on the part inclined cantilever 2 between arm 4.
Preferably, the glue injection channel of the mold and bleed-off passage along the Horizontal Cantilever 1, inclined cantilever 2, arched arm 3 or connect
It connects arm 4 to be symmetrically arranged, 1-8 pumping is arranged in mold on the part inclined cantilever 2 between Horizontal Cantilever 1 and linking arm 4
Mouth 5, the bleeding point 5 is arranged in the front and rear sides of the part inclined cantilever 2 between Horizontal Cantilever 1 and linking arm 4, the oblique wrist
The line of 2 front and rear sides bleeding point 5 of arm is logical with double injecting glues on the part inclined cantilever 2 between Horizontal Cantilever 1 and linking arm 4
The line in road is perpendicular.
Preferably, total gum-injecting port 6 is arranged in the mold below the one end of inclined cantilever 2 far from linking arm 4, in Horizontal Cantilever 1
Total bleeding point 7 is set with 4 stitching portion of linking arm.
RTM injection refers to that resin transfer moulding (Resin TransferMoulding) is injected, injects resin into closure
Mold summarizes infiltration reinforcing material and a kind of cured technique.
Usually selective injecting glue mode has point-to-point injection, line to line injection, exterior contour to central point to inject three kinds
Mode.At the same pressure, the mode that exterior contour is injected to central point is most fast, and followed by line to line is injected, and is that point arrives again
Point injection.In view of contact net support device structure of the invention is complicated, it is about 2-5m, high 1-3m, and width only has each bracket
The width (about 0.05-0.3m) of diameter, belongs to flat component, and injecting glue difficulty is big；And contact net support device sheet of the invention
As structure and crossover sites it is more, structure is complicated, it is difficult to determine quantity and the position of injection point, it is also difficult to from exterior contour to
Central point injection, therefore it is not considered as point-to-point injection and exterior contour to the mode injected to central point, final determination is adopted
With the injection system of line to line.In practical preparation, by the way of VA RTM injection, it is possible to use the side of vasopressing injection
Formula cooperation injection.Vacuum aided helps to reduce the stomata in contact net support device obtained, improves final product quality.
Line to line injection, the whole installation principle of gel-injection mould are that from the inside to the outside, inside setting glue injection channel, outside is set
Set bleed-off passage.Specifically, gel-injection mould is along 1 lower section of Horizontal Cantilever, 2 lower section of inclined cantilever, 3 inside of arched arm, linking arm 4
Just, and above the part inclined cantilever 2 between Horizontal Cantilever 1 and linking arm 4 glue injection channel is set, above Horizontal Cantilever 1, far
Bleed-off passage is set below 2 upper of part inclined cantilever, 3 outside of arched arm, linking arm 4 from linking arm 4, and flat being located at
Bleeding point 5 is set on the part inclined cantilever 2 between bracket 1 and linking arm 4.It is injected using line to line, injecting glue length is by original
The several meters of perimeters (about 0.2-0.6m) for being changed into each arm, so that injecting glue difficulty reduces, the injecting glue time shortens, and obtained finished product branch
Support arrangement is high-quality.
The glue injection channel and bleed-off passage of gel-injection mould are divided along the Horizontal Cantilever 1, inclined cantilever 2, arched arm 3 or linking arm 4
Not Dui Chengshezhi, can make injection resin uniformly flow to bleed-off passage along each bracket from glue injection channel, it is ensured that resin impregnated is whole
A device, is finally reached that resin is uniform, complete profiled part.Part inclined cantilever 2 between Horizontal Cantilever 1 and linking arm 4
Over and under be provided with glue injection channel, for double glue injection channels, therefore bleeding point 5 is set here.Usually setting 1-8
Bleeding point 5, the bleeding point 5 are arranged in the front and rear sides of the part inclined cantilever 2 between Horizontal Cantilever 1 and linking arm 4.Two sides
Bleeding point 5 can also can be set different with mirror settings；The mode for generalling use mirror settings is being located at Horizontal Cantilever 1 and is connecting
1-4 bleeding point 5 is respectively arranged in the front and rear sides for connecing the part inclined cantilever 2 between arm 4.The company of 2 front and rear sides bleeding point 5 of inclined cantilever
The line of double glue injection channels on line, with the part inclined cantilever 2 between Horizontal Cantilever 1 and linking arm 4 is perpendicular, is arranged such
Bleeding point 5 and glue injection channel can make the resin of injection from the uniform flow up and down of inclined cantilever 2 two sides forwards, backwards, it is ensured that inclined cantilever 2
Resin is immersed at each position.
In the embodiment of the present invention, total gum-injecting port is set below the one end of inclined cantilever 2 far from linking arm 4 in gel-injection mould
6, in Horizontal Cantilever 1 and 4 stitching portion of linking arm, total bleeding point 7 is set.When carrying out RTM injection, resin is injected from total gum-injecting port 6,
Due to being equipped with glue injection channel, the pressure that resin flows to glue injection channel is much smaller than the pressure for being impregnated with bracket, therefore resin can be flowed to first
Glue injection channel, and resin fills up the speed of glue injection channel and is far longer than the speed of resin impregnated bracket.When resin flows into and fills up
After glue injection channel, due to the negative pressure vacuumized, resin can flow to the other side from the glue injection channel of bracket side to infiltration is finished
Bleed-off passage realizes the injection of line to line.At the part inclined cantilever 2 with double glue injection channels, due to being provided with bleeding point 5,
Resin will flow to each bleeding point from glue injection channel along inclined cantilever 2, and inclined cantilever 2 is uniformly impregnated with resin.It, will due to gravity
Support device of the invention is laid flat into (and making the length of support device and width thick positioned at vertical plane positioned at horizontal plane) injecting glue
When mold injecting glue, the gummosis rate of lower semicircular can be greater than top semicircle, but due to being provided with bleeding point and air extractor, resin
Entire support device will eventually be uniformly impregnated with
As shown in fig. 6, gel-injection mould is along glue injection channel and bleed-off passage parting.In practical operation, modulus method can be set
Blue side be it is smooth, lower die flange be respectively set from inside to outside glue injection channel or bleed-off passage groove, the first o-ring groove,
Second o-ring groove passes through dual-seal when injecting glue and guarantees injecting glue effect.Outside second o-ring groove, also settable mode locking and
Positioning device.(arc groove can be set by glue injection channel or bleed-off passage groove, by the first o-ring groove, the second sealing
Circle groove is set as square groove.Heating device should be also arranged in mold, be heating and curing after injecting glue.The settable temperature control of heating device
The parameters such as temperature and heating rate are arranged either manually or by program in component.
Preferably, in step 1), the core pipe be epoxy pultrusion pipe, pvc pipe, PP-R pipe it is any.
Epoxy pultrusion pipe is usually made of the direct pultrusion of epoxy composite material, has bending radius small, light-weight, elastic
The advantages that good, ageing-resistant.The main component of pvc pipe is polyvinyl chloride, and other compositions are added enhance its heat resistance, toughness, prolongs
Malleability.Pvc pipe has many advantages, such as from heavy and light, corrosion-resistant, good insulation preformance.The main component of PP-R pipe is polypropylene, insulating properties
Can be good the advantages that.
Preferably, in step 2), when using winding the method for glass fibre after core pipe splicing bonding, first splice core pipe,
Bonding, then by glass fibre layered windings in core pipe, every layer of glass fibre staggered floor winding is tied at interval of 1-3 layers of glass fibre
It ties up once, crossover sites use glass fiber winding reinforcement.
Preferably, every layer of glass fibre staggered floor 15-60mm is wound, and the glass fibre wound in core pipe is with a thickness of 5-15mm.
Preferably, in step 2), when using splicing the method for bonding after core pipe winding glass fibre, first glass fibre is twined
It is wound on Horizontal Cantilever 1, inclined cantilever 2, arched arm 3 and linking arm 4, then each core pipe after winding glass fibre is spliced, bonding.
When winding the method for glass fibre after using core pipe splicing bonding, since support device structure of the invention is multiple
Miscellaneous, crossover sites are more, therefore are not available monolithic glass fiber and once cover, and need multiple laying to wind, then the connector of laying
Mode will affect the mechanical property of the support device of final molding.Mainly since support member of the invention is complex-shaped and hands over
Fork, glass fibre are difficult to be compacted, and crossover sites fiber is difficult to serialization.The laying that then needs to offset one from another in each layer glass fibre twines
Around.In the present invention, the 15-60mm that will be staggered between every layer of glass fibre winding, be such as staggered 20-25 or 30-35mm winding.Ensure
RTM injection is carried out after glass fiber winding, will not influence the mechanical property of integral support device.Simultaneously as length direction by
Power is larger, overlap joint transitional region is inwardly arranged when winding glass fibre along its length, in the connection of Horizontal Cantilever 1 and linking arm 4
Place, the junction of Horizontal Cantilever 1 and inclined cantilever 2, inclined cantilever 2 and the infall of linking arm 4 and the company of arched arm 3 and linking arm 4
Place's setting overlap joint transitional region is connect, guarantees the performance of glass fibre laying.Glass fibre docking location uses setting agent or sewing
Mode be fixed, every layer of docking location is arranged in a staggered manner.In addition, it is primary at interval of 1-3 layers of glass fibre binding, such as every
It is primary using the winding binding of dry yarn every 2 layers of glass fibre, play the role of fixed and increase restraining force, it is ensured that glass fibre
The close laying in core pipe, and gel-injection mould can be smoothly put into without backform.In addition, support device crossover sites use glass fibers
Winding reinforcing is tieed up, as crossover sites use the glass fibre cloth saliva village winding reinforcing of 15-20mm wide.Nothing can be selected in glass fibre
Alkali E glass-fiber-fabric or other glass fibres.The glass fibre thickness of core pipe winding reaches 5-15mm, preferably 7.5-10mm.
Glass fibre laying coats after being cut monolithic glass fiber according to each position shape of support device, can also
It is wound using the glass fibre of strip around each arm.If being coated after being cut according to each position shape of support device,
The connecting portion of each arm connecting portion, especially arched arm 3 and Horizontal Cantilever 1, linking arm 4, needs to cut out material, supplementary angle.In general, in each arm
Glass fibre is directly cut cladding by main part, uses the glass fiber winding of strip in crossover sites.
When splicing the method for bonding again after using core pipe winding glass fibre, laying flexibility is bigger, occupies mold
Time is shorter, but needs more glue sprayings glass-fiber-fabric is fixed.Glue spraying makes every layer of glass fibers for being bonded each layer glass fibre
It is bonded between dimension secured.Mould is occupied compared to integral one-step molding using the method for splicing bonding after core pipe winding glass fibre again
Has time reduction, but thickness is larger at each arm connection, the position performance is relatively thin weak.
Preferably, the RTM injection uses high insulating epoxy.
RTM injects the insulating epoxy that uses, should meet viscosity it is low, with fiber wetness is good, validity period is long, volatilization
Divide the requirements such as content is low, shrinking percentage is low.The epoxy-resin systems that can be used have bisphenol A type epoxy resin (such as CYD-128/
IA), alicyclic multi-anhydride (such as TDE-85/TA), bisphenol f type epoxy resin.
High insulating epoxy infiltrates entire support device, and finished product obtained has high-insulativity, is provided simultaneously with contact net
The characteristics such as the intensity of support device, weather-proof can effectively improve support device in the insulation effect of thunderstorm weather, thunder and lightning is avoided to cause
Contact net failure occur.
Preferably, in step 3), the core pipe after winding is put into mold, is molded, by resin from total gum-injecting port 6 of mold
Injection, vacuumizes into glue injection channel, while from total bleeding point 7 of mold and each bleeding point 5, when resin is from the total bleeding point of mold
7 and each bleeding point 5 in flow out when stop injection.
Preferably, in step 3), heating temperature is 70-120 DEG C, heating time 4-10h, cooling, removes gel-injection mould, obtains
To molding contact net support device.
In general, gel-injection mould coats release agent in advance, then the core pipe after winding glass fibre is put into mold, then
It is put into the first sealing strip, the second sealing strip, molds, gel-injection mould is fixedly clamped.Then start injecting glue and pumping process again.Add
After heat cure, gel-injection mould is removed, after molding contact net support device is taken out, cuts off extra resin, and polish,
Obtain contact net support device free of surface defects.When injecting glue, can be set in 70-120 DEG C of heating 4-10h, such as 80-90 DEG C plus
Hot 5-6h.When cooling, usually to mold temperature be reduced to 50 DEG C hereinafter, removing mold.
The method provided by the present invention preparation contact net support device, meet professional standard physical property, mechanical property,
The requirement of electric property and insulation aspect, is able to bear enough horizontal, vertical loads, cantilever structure do not occur plastic deformation or
Sliding.
The forming method of contact net support construction provided by the invention, it is simple to operation, the support device performance of preparation is good,
Intensity is high, light-weight.By using the composite material of height insulation, the safety of contact net operation is improved；Simultaneously as using
Integral forming process greatly reduces the difficulty and workload of installation and the later maintenance of contact net support device.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (10)
1. a kind of forming method of contact net support device, which comprises the following steps:
1) core pipe is processed, and core pipe is processed into Horizontal Cantilever (1), inclined cantilever (2), arched arm (3) and linking arm (4) respectively；
2) splice bonding after core pipe winding glass fibre；Or glass fibre is wound after core pipe splicing bonding；
3) mold clamping, RTM injection, be heating and curing molding；
Wherein, the mold is below the Horizontal Cantilever (1), below inclined cantilever (2), on the inside of arched arm (3), above linking arm (4), with
And glue injection channel is set above the part inclined cantilever (2) between Horizontal Cantilever (1) and linking arm (4), along Horizontal Cantilever (1)
Side, part inclined cantilever (2) upper far from linking arm (4), arched arm (3) outside, the setting pumping of linking arm (4) lower section are logical
Road, and bleeding point (5) are set on the part inclined cantilever (2) between Horizontal Cantilever (1) and linking arm (4).
2. the method according to claim 1, wherein the glue injection channel and bleed-off passage of the mold are along described flat
Bracket (1), inclined cantilever (2), arched arm (3) or linking arm (4) are symmetrically arranged, mold be located at Horizontal Cantilever (1) with connect
1-8 bleeding point (5) is set on the part inclined cantilever (2) between arm (4), and the bleeding point (5) is arranged in Horizontal Cantilever (1)
The front and rear sides of part inclined cantilever (2) between linking arm (4), the company of inclined cantilever (2) the front and rear sides bleeding point (5)
The line of double glue injection channels on line, with the part inclined cantilever (2) between Horizontal Cantilever (1) and linking arm (4) is perpendicular.
3. according to the method described in claim 2, it is characterized in that, the mold inclined cantilever (2) far from linking arm (4) one
Total gum-injecting port (6) is arranged in end lower section, and total bleeding point (7) is arranged in Horizontal Cantilever (1) and linking arm (4) stitching portion.
4. the method according to claim 1, wherein in step 1), the core pipe be epoxy pultrusion pipe, pvc pipe,
PP-R pipe it is any.
5. the method according to claim 1, wherein winding glass after bonding using core pipe splicing in step 2)
When the method for fiber, first by core pipe splicing, bonding, then by glass fibre layered windings in core pipe, every layer of glass fibre staggered floor
Winding, primary at interval of 1-3 layers of glass fibre binding, crossover sites use glass fiber winding reinforcement.
6. according to the method described in claim 5, being twined in core pipe it is characterized in that, every layer of glass fibre staggered floor 15-60mm winding
Around glass fibre with a thickness of 5-15mm.
7. the method according to claim 1, wherein splicing after winding glass fibre using core pipe in step 2)
When the method for bonding, first by glass fiber winding on Horizontal Cantilever (1), inclined cantilever (2), arched arm (3) and linking arm (4), then
By the splicing of each core pipe, the bonding after winding glass fibre.
8. the method according to claim 1, wherein RTM injection uses high insulating epoxy.
9. according to the method described in claim 3, it is characterized in that, the core pipe after winding is put into mold in step 3), conjunction
Mould injects resin from total gum-injecting port (6) of mold, into glue injection channel, while from total bleeding point (7) of mold and each pumping
Mouth (5) vacuumizes, and stops injection when resin outflow from the total bleeding point of mold (7) and each bleeding point (5).
10. according to the method described in claim 9, heating temperature is 70-120 DEG C it is characterized in that, in step 3), when heating
Between 4-10h, it is cooling, remove gel-injection mould, obtain molding contact net support device.
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| CN201710640557.5A CN107379578B (en) | 2017-07-31 | 2017-07-31 | A kind of forming method of contact net support device |
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| CN201710640557.5A CN107379578B (en) | 2017-07-31 | 2017-07-31 | A kind of forming method of contact net support device |
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| CN107379578B true CN107379578B (en) | 2019-09-27 |
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| CN112275441A (en) * | 2020-09-15 | 2021-01-29 | 江西铭鑫冶金设备有限公司 | Spiral chute made of crushed resin powder of waste printed circuit board and manufacturing process of spiral chute |
| CN116730636B (en) * | 2023-05-06 | 2023-12-26 | 温州益坤电气股份有限公司 | Wrist arm stay tube |
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|---|---|---|---|---|
| DE2657051A1 (en) * | 1976-12-16 | 1978-06-29 | Muanyagipari Kutato Intezet | Flexible plastics HV insulator for overhead lines - has core embedded in plastics layer with plastics screen to resist pollution and moisture |
| CN2716061Y (en) * | 2004-04-30 | 2005-08-10 | 铁道部电气化工程局宝鸡器材厂 | Insulated bracing or strutting arrangement for rail traffic conductor rail |
| CN105398064A (en) * | 2015-11-30 | 2016-03-16 | 南京航空航天大学 | Integral molding method and molding die for fiber-reinforced resin-based composite round pipe |
| CN106183893A (en) * | 2016-08-11 | 2016-12-07 | 西安唯实输配电技术有限公司 | It is applied to the overall compound inslation bracket of railway contact net and manufactures device and technique |
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2017
- 2017-07-31 CN CN201710640557.5A patent/CN107379578B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2657051A1 (en) * | 1976-12-16 | 1978-06-29 | Muanyagipari Kutato Intezet | Flexible plastics HV insulator for overhead lines - has core embedded in plastics layer with plastics screen to resist pollution and moisture |
| CN2716061Y (en) * | 2004-04-30 | 2005-08-10 | 铁道部电气化工程局宝鸡器材厂 | Insulated bracing or strutting arrangement for rail traffic conductor rail |
| CN105398064A (en) * | 2015-11-30 | 2016-03-16 | 南京航空航天大学 | Integral molding method and molding die for fiber-reinforced resin-based composite round pipe |
| CN106183893A (en) * | 2016-08-11 | 2016-12-07 | 西安唯实输配电技术有限公司 | It is applied to the overall compound inslation bracket of railway contact net and manufactures device and technique |
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