CN107399251A - A kind of forming method of contact net support meanss - Google Patents
A kind of forming method of contact net support meanss Download PDFInfo
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- CN107399251A CN107399251A CN201710643381.9A CN201710643381A CN107399251A CN 107399251 A CN107399251 A CN 107399251A CN 201710643381 A CN201710643381 A CN 201710643381A CN 107399251 A CN107399251 A CN 107399251A
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- Prior art keywords
- way
- cantilever
- arm
- linking arm
- core
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M1/00—Power supply lines for contact with collector on vehicle
- B60M1/12—Trolley lines; Accessories therefor
- B60M1/28—Manufacturing or repairing trolley lines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M1/00—Power supply lines for contact with collector on vehicle
- B60M1/12—Trolley lines; Accessories therefor
- B60M1/20—Arrangements for supporting or suspending trolley wires, e.g. from buildings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Insulating Bodies (AREA)
Abstract
This application discloses a kind of preparation method of contact net support meanss, comprise the following steps：1) core is processed, and core is processed into Horizontal Cantilever (1), inclined cantilever (2), arched arm (3) and linking arm (4) respectively；2) core splices, and is fixed core split by connector；3) global formation.The contact net support meanss integral forming method that the application provides, simply, support meanss are efficiently prepared, meanwhile, prepared contact net support meanss are in light weight, intensity is high, good insulation preformance.
Description
Technical field
The application is related to electrified track technical field of transportation, more particularly to a kind of shaping side of contact net support meanss
Method.
Background technology
Contact net is the transmission line of electricity powered to electric locomotive set up along rail line overhead, in outdoor complicated ring
Operated under border, its stability and the operation security of security direct relation track traffic.Contact net support meanss are arranged on support
On post, to support overhead contact line, and play a part of transfer charge.It is enough to require that suspension arrangement possesses in actual use
Mechanical strength, structure is as far as possible simple, light and handy, and easy installation and maintenance is changed.
And existing contact net support meanss are mainly steel cantilever support device and support device for aluminium alloy cantilever.Both
Support meanss have more than ten or even tens parts to be formed by connecting by forms such as be hinged and bolt connections, install maintenance work
Amount is big and construction quality is difficult to ensure that, while insulator price is also higher.
The content of the invention
In order to solve the above technical problems, the object of the invention for provide a kind of forming method of contact net support meanss it is simple,
Contact net support meanss efficiently are prepared, meanwhile, prepared contact net support meanss are in light weight, intensity is high, it is excellent exhausted to have
Edge performance, various weather conditions are adapted to, contact net reliability can be improved, reduce installation and maintenance work difficulty.
Technical scheme provided by the invention is as follows：
A kind of preparation method of contact net support meanss, comprises the following steps：
1) core is processed, and core is processed into Horizontal Cantilever, inclined cantilever, arched arm and linking arm respectively；
2) core splices, and is fixed core split by connector；
3) global formation.
Preferably, the core is unsaturated polyester (UP) base fibre reinforced pipe, vinyl fiber reinforced pipe, the increasing of epoxy radicals fiber
Any of Qiang Guan, pvc pipe.
Preferably, the Horizontal Cantilever of the core, inclined cantilever, arched arm, the otch of linking arm for circular lance or straight are cut
Mouthful, the circular lance or straight cut angle are engaged with connecting portion.
Preferably, the arched arm is connected with the Horizontal Cantilever position sets multi-diameter shaft, the Horizontal Cantilever with it is described
The position that arched arm is connected sets pin hole, and the multi-diameter shaft of the pin hole of the Horizontal Cantilever and the arched arm is equipped with.
Preferably, the connector includes the first two-way, the second two-way, four-way, and first two-way connects the flat wrist
Arm and linking arm, the second two-way connection Horizontal Cantilever and inclined cantilever, four-way connection inclined cantilever, arched arm and the linking arm.
Preferably, first two-way, the second two-way, the internal diameter of four-way are more than or equal to the Horizontal Cantilever, inclined cantilever, arc
The external diameter of shape arm, linking arm, first two-way, the second two-way, four-way and the Horizontal Cantilever, inclined cantilever, arched arm, linking arm
Fit connects.
Preferably, first two-way, the second two-way, external diameter and the Horizontal Cantilever, inclined cantilever, arched arm, the company of four-way
It is identical to connect the external diameter of arm, the Horizontal Cantilever, inclined cantilever, arched arm, linking arm block in crossover sites, with first two-way,
The gluing connection of second two-way, four-way.
Preferably, the integral forming method for winding glass fibre after RTM be injection moulded, or prepreg wound and solidified into
Any of type method.
Preferably, when using the injection molding methods of RTM after glass fibre are wound, the gel-injection mould is along under Horizontal Cantilever
Side, below inclined cantilever, on the inside of arched arm, above linking arm, and on part inclined cantilever between Horizontal Cantilever and linking arm
Side sets glue injection channel, along Horizontal Cantilever top, the part inclined cantilever upper away from linking arm, arched arm outside, linking arm
Lower section sets bleed-off passage, and sets bleeding point on the part inclined cantilever between Horizontal Cantilever and linking arm, will wind glass
Core after glass fiber is put into mould, matched moulds, and RTM injections, be heating and curing shaping.
Preferably, when using prepreg wound and solidified forming method, by prepreg with 30-45 ° of winding core, it is put into mould
Tool, matched moulds, curing molding.
Method provided by the invention, by the way that core to be processed into Horizontal Cantilever, inclined cantilever, arched arm and linking arm respectively, so
After core split is fixed by connector afterwards, global formation, the contact net support meanss of preparation are in light weight, intensity is high, has
Excellent insulating properties, various weather conditions are adapted to, contact net reliability can be improved, reduce installation and maintenance work difficulty.
The connecting portion of circular lance, straight cut respectively with each arm is engaged, ensure during each part split of core it is stable,
Firmly.
The position that arched arm is connected with the Horizontal Cantilever sets multi-diameter shaft, and the Horizontal Cantilever is connected with the arched arm
Position pin hole is set, and multi-diameter shaft is equipped with pin hole, then arched arm is matched somebody with somebody with Horizontal Cantilever by way of latch
Installation is closed, ensures the stabilization of arched arm, firmly installation.
The first two-way of the present invention, the second two-way, four-way design according to the shape of the contact net support meanss of the present invention, system
Standby the first two-way, the second two-way, four-way, its internal diameter are more than or equal to Horizontal Cantilever, inclined cantilever, arched arm, the external diameter of linking arm,
Then the first two-way, the second two-way, four-way and Horizontal Cantilever, inclined cantilever, arched arm, linking arm can be connected with fit.
The present invention in contact net support meanss crossover sites by setting connector, it is ensured that the firm connection of each part.
In addition to each arm is connected using hollow connector fit, can also by each arm of integral support device in crossover sites (i.e.
At connector) block, it is each arm and each connector split is gluing, it is ensured that it is consistent that global formation finishes thickness.
Except being coordinated using circular lance or straight cut, multi-diameter shaft and pin hole, in addition to the connection of connector fit, each part it
Between connect, can also be carried out using structure glue gluing, it is ensured that the stable and firm connection of each part, in long-term, outdoor application process
The stabilization of middle storage configuration or performance.
RTM is injected, and is referred to that resin transfer moulding (Resin TransferMoulding) is injected, is injected resin into closure
Mould collects infiltration reinforcing material and a kind of technique solidified.It is complicated in view of the contact net support device structure of the present invention, it is long
About 2-5m, high 1-3m, and width only has the width (about 0.05-0.3m) of each bracket diameter, forms the chi structure of closed loop, this
Invention is by the way of line to line injection.Line to line is injected, and the whole installation principle of gel-injection mould is that from the inside to the outside, inside is set
Glue injection channel is put, outside sets bleed-off passage.Specifically, gel-injection mould is along Horizontal Cantilever lower section, inclined cantilever lower section, arched arm
Side, above linking arm, and setting glue injection channel above part inclined cantilever between Horizontal Cantilever and linking arm, along Horizontal Cantilever
Top, the part inclined cantilever upper away from linking arm, arched arm outside, linking arm lower section set bleed-off passage, and in place
Bleeding point is set on part inclined cantilever between Horizontal Cantilever and linking arm.Injected using line to line, injecting glue length is by original
The several meters of girths (about 0.2-0.6m) for being changed into each arm so that injecting glue difficulty reduces, and the injecting glue time shortens, and obtained finished product branch
Support arrangement quality is good.
Prepreg be with resin matrix under conditions of strict control impregnating continuous fibres or fabric, be made resin matrix with
The composition of reinforcement, belong to the intermediate materials for preparing composite.Prepreg includes reinforcing material, and (glass fibre, aramid fiber are fine
Dimension etc.) and matrix material (epoxy resin, phenolic resin, cyanic acid ammonia resin etc.).The present invention may be selected to wind preimpregnation on core
Material and then curing molding, obtain the contact net support meanss of excellent performance.
The selection of prepreg winding angle, angle is bigger, is more easy to wind, and length direction mechanical property is poor, diameter
Direction mechanics better performances.In the present invention, prepreg is wound using unspecified angle in 30-45 °, is calculated by analysis, final system
The performance of standby contact net support meanss can reach requirement.
The method provided by the present invention prepare contact net support meanss, meet professional standard physical property, mechanical property,
Requirement in terms of electric property and insulation, can bear enough levels, vertical load, cantilever structure do not occur plastic deformation or
Sliding.
The integral forming method of contact net supporting construction provided by the invention, simple to operation, the support meanss of preparation
Energy is good, intensity is high, in light weight.By using the composite of height insulation, the security of contact net operation is improved, reduces and connects
The difficulty and workload of installation and the later maintenance of net-fault support meanss.
Brief description of the drawings
, below will be to embodiment or existing in order to illustrate more clearly of the embodiment of the present application or technical scheme of the prior art
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments described in application, for those of ordinary skill in the art, on the premise of not paying creative work,
Other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram of the contact net support meanss prepared in the embodiment of the present invention；
Fig. 2 is the structural representation of the contact net support meanss prepared in the embodiment of the present invention；
Fig. 3 is the circular lance schematic diagram of the contact net support meanss prepared in the embodiment of the present invention；
Fig. 4 is the straight cut schematic diagram of the contact net support meanss prepared in the embodiment of the present invention；
Fig. 5 is the arched arm multi-diameter shaft schematic diagram prepared in the embodiment of the present invention；
Fig. 6 is the arched arm and Horizontal Cantilever latch connection diagram prepared in the embodiment of the present invention；
Fig. 7 is the first schematic diagram (socket) of connector in the embodiment of the present invention；
Fig. 8 is second of schematic diagram of connector (bonding) in the embodiment of the present invention
Fig. 9 is the first schematic diagram (socket) of the first two-way in the embodiment of the present invention；
Figure 10 is second of schematic diagram of the first two-way (bonding) in the embodiment of the present invention；
Figure 11 is the first schematic diagram (socket) of the second two-way in the embodiment of the present invention；
Figure 12 is second of schematic diagram of the second two-way (bonding) in the embodiment of the present invention；
Figure 13 is the first schematic diagram (socket) of four-way in the embodiment of the present invention；
Figure 14 is second of schematic diagram of four-way (bonding) in the embodiment of the present invention；
Figure 15 is the gel-injection mould injecting glue of the contact net support meanss prepared in the embodiment of the present invention, the signal of pumping position
Figure；
Figure 16 is that the contact net support meanss prepreg prepared in the embodiment of the present invention winds schematic diagram (45 °)；
Figure 17 is that the contact net support meanss prepreg prepared in the embodiment of the present invention winds schematic diagram (30 °)；
Reference：1- Horizontal Cantilevers；2- inclined cantilevers；3- arched arms；4- linking arms；The two-ways of 5- first；The two-ways of 6- second；7-
Four-way；8- bleeding points；A- glue injection channels；B- bleed-off passages；C- glass fibre laying transitional regions；Modulus method is blue on d- gel-injection moulds
Side；Mould flange under e gel-injection moulds；The sealing ring of f- gel-injection moulds first；The sealing ring of g- gel-injection moulds second；
Embodiment
In order that those skilled in the art more fully understand the technical scheme in the application, it is real below in conjunction with the application
The accompanying drawing in example is applied, the technical scheme in the embodiment of the present application is clearly and completely described, it is clear that described implementation
Example only some embodiments of the present application, rather than whole embodiments.It is common based on the embodiment in the application, this area
The every other embodiment that technical staff is obtained under the premise of creative work is not made, it should all belong to the application protection
Scope.
Please as shown in Fig. 1 to Figure 17, a kind of preparation method of contact net support meanss of offer of the embodiment of the present invention, including with
Lower step：
1) core is processed, and core is processed into Horizontal Cantilever 1, inclined cantilever 2, arched arm 3 and linking arm 4 respectively；
2) core splices, and is fixed core split by connector；
3) global formation.
Preferably, the core is composite material tube unsaturated polyester (UP) base fibre reinforced pipe, vinyl fiber reinforced pipe, ring
Any of epoxide fiber reinforced pipe, pvc pipe.
Method provided by the invention, by the way that core to be processed into Horizontal Cantilever 1, inclined cantilever 2, arched arm 3 and linking arm respectively
4, then by connector by core split fix after, global formation, the contact net support meanss of preparation, it is in light weight, intensity is high,
With excellent insulating properties, various weather conditions are adapted to, contact net reliability can be improved, installation is reduced and maintenance workers is felt embarrassed
Degree.
Preferably, the Horizontal Cantilever 1 of the core, inclined cantilever 2, arched arm 3, the otch of linking arm 4 are circular lance or flat
Straight cut, the circular lance or straight cut angle are engaged with connecting portion.
Circular lance is as shown in figure 3, straight cut as shown in figure 4, the connecting portion with each arm is engaged respectively, ensures core
It is stable during each part split of material, firmly.
Preferably, the position that the arched arm 3 is connected with the Horizontal Cantilever 1 sets multi-diameter shaft, the Horizontal Cantilever 1 and institute
State the position that arched arm 3 is connected and pin hole is set, the multi-diameter shaft of the pin hole of the Horizontal Cantilever 1 and the arched arm 3 coordinates
Set.
As shown in Figure 5 to Figure 6, the position that arched arm 3 is connected with the Horizontal Cantilever 1 sets multi-diameter shaft, the Horizontal Cantilever 1
The position being connected with the arched arm 3 sets pin hole, and multi-diameter shaft is equipped with pin hole, then arched arm 3 is with putting down
Bracket 1 coordinates installation by way of latch, ensures the stabilization of arched arm, firmly installation.
Preferably, the connector includes the first two-way 5, the second two-way 6, four-way 7, and first two-way 5 connects described
Horizontal Cantilever 1 and linking arm 4, second two-way 6 connect Horizontal Cantilever 1 and inclined cantilever 2, the four-way connection inclined cantilever 2, arched arm
3 with linking arm 4.
Preferably, first two-way 5, the second two-way 6, the internal diameter of four-way 7 are more than or equal to the Horizontal Cantilever 1, oblique wrist
Arm 2, arched arm 3, the external diameter of linking arm 4, first two-way 5, the second two-way 6, four-way 7 and the Horizontal Cantilever 1, inclined cantilever 2,
Arched arm 3, the connection of the fit of linking arm 4.
The first two-way 5 of the present invention, the second two-way 6, four-way 7 are set according to the shape of the contact net support meanss of the present invention
Meter, the first two-way 5 of preparation, the second two-way 6, four-way 7, its internal diameter are more than or equal to Horizontal Cantilever 1, inclined cantilever 2, arched arm 3, company
The external diameter of arm 4 is connect, then the first two-way 5, the second two-way 6, four-way 7 and Horizontal Cantilever 1, inclined cantilever 2, arched arm 3, linking arm 4 can be with
Fit connects.
Preferably, first two-way 5, the second two-way 6, external diameter and the Horizontal Cantilever 1, inclined cantilever 2, the arc of four-way 7
Arm 3, the external diameter of linking arm 4 are identical, and the Horizontal Cantilever 1, inclined cantilever 2, arched arm 3, linking arm 4 block in crossover sites, with institute
State the first two-way 5, the second two-way 6,7 gluing connection of four-way.
The present invention in contact net support meanss crossover sites by setting connector, it is ensured that the firm connection of each part.
In addition to each arm is connected using hollow connector fit, can also by each arm of integral support device in crossover sites (i.e.
At connector) block, it is each arm and each connector split is gluing, it is ensured that it is consistent that global formation finishes thickness.
Except being coordinated using circular lance or straight cut, multi-diameter shaft and pin hole, in addition to the connection of connector fit, each part it
Between connect, can also be carried out using structure glue gluing, it is ensured that the stable and firm connection of each part, in long-term, outdoor application process
The stabilization of middle storage configuration or performance.
Preferably, the integral forming method for winding glass fibre after RTM be injection moulded, or prepreg wound and solidified into
Any of type method.
Preferably, when using the injection molding methods of RTM after glass fibre are wound, the gel-injection mould is along Horizontal Cantilever 1
Lower section, the lower section of inclined cantilever 2, the inner side of arched arm 3, the top of linking arm 4, and the part between Horizontal Cantilever 1 and linking arm 4 are oblique
The top of bracket 2 sets glue injection channel, along the top of Horizontal Cantilever 1, the upper of part inclined cantilever 2, arched arm 3 away from linking arm 4
Outside, the lower section of linking arm 4 set bleed-off passage, and set on the part inclined cantilever 2 between Horizontal Cantilever 1 and linking arm 4
Bleeding point 8, the core after winding glass fibre is put into mould, matched moulds, RTM injections, be heating and curing shaping.
Preferably, when using prepreg wound and solidified forming method, by prepreg with 30-45 ° of winding core, it is put into mould
Tool, matched moulds, curing molding.
RTM is injected, and is referred to that resin transfer moulding (Resin TransferMoulding) is injected, is injected resin into closure
Mould collects infiltration reinforcing material and a kind of technique solidified.It is complicated in view of the contact net support device structure of the present invention, it is long
About 2-5m, high 1-3m, and width only has the width (about 0.05-0.3m) of each bracket diameter, forms the chi structure of closed loop, this
Invention is by the way of line to line injection.Line to line is injected, and the whole installation principle of gel-injection mould is that from the inside to the outside, inside is set
Glue injection channel is put, outside sets bleed-off passage.Specifically, gel-injection mould is along Horizontal Cantilever lower section, inclined cantilever lower section, arched arm
Side, above linking arm, and setting glue injection channel above part inclined cantilever between Horizontal Cantilever and linking arm, along Horizontal Cantilever
Top, the part inclined cantilever upper away from linking arm, arched arm outside, linking arm lower section set bleed-off passage, and in place
Bleeding point is set on part inclined cantilever between Horizontal Cantilever and linking arm.Injected using line to line, injecting glue length is by original
The several meters of girths (about 0.2-0.6m) for being changed into each arm so that injecting glue difficulty reduces, and the injecting glue time shortens, and obtained finished product branch
Support arrangement quality is good.
Prepreg be with resin matrix under conditions of strict control impregnating continuous fibres or fabric, be made resin matrix with
The composition of reinforcement, belong to the intermediate materials for preparing composite.Prepreg includes reinforcing material, and (glass fibre, aramid fiber are fine
Dimension etc.) and matrix material (epoxy resin, phenolic resin, cyanic acid ammonia resin etc.).The present invention may be selected to wind preimpregnation on core
Material and then curing molding, obtain the contact net support meanss of excellent performance.
The selection of prepreg winding angle, angle is bigger, is more easy to wind, and length direction mechanical property is poor, diameter
Direction mechanics better performances.In the present invention, prepreg is wound using unspecified angle in 30-45 °, is calculated by analysis, final system
The performance of standby contact net support meanss can reach requirement.
The method provided by the present invention prepare contact net support meanss, meet professional standard physical property, mechanical property,
Requirement in terms of electric property and insulation, can bear enough levels, vertical load, cantilever structure do not occur plastic deformation or
Sliding.
The integral forming method of contact net supporting construction provided by the invention, simple to operation, the support meanss of preparation
Energy is good, intensity is high, in light weight.By using the composite of height insulation, the security of contact net operation is improved, reduces and connects
The difficulty and workload of installation and the later maintenance of net-fault support meanss.
The foregoing description of the disclosed embodiments, professional and technical personnel in the field are enable to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for 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, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (10)
1. a kind of preparation method of contact net support meanss, it is characterised in that comprise the following steps：
1) core is processed, and core is processed into Horizontal Cantilever (1), inclined cantilever (2), arched arm (3) and linking arm (4) respectively；
2) core splices, and is fixed core split by connector；
3) global formation.
2. according to the method for claim 1, it is characterised in that the core is unsaturated polyester (UP) base fibre reinforced pipe, second
Any of alkenyl fiber reinforced pipe, epoxy base fibre reinforced pipe, pvc pipe.
3. according to the method for claim 1, it is characterised in that Horizontal Cantilever (1), inclined cantilever (2), the arched arm of the core
(3), the otch of linking arm (4) is circular lance or straight cut, the circular lance or straight cut angle and connecting portion
It is engaged.
4. according to the method for claim 3, it is characterised in that what the arched arm (3) was connected with the Horizontal Cantilever (1)
Position sets multi-diameter shaft, and the position that the Horizontal Cantilever (1) is connected with the arched arm (3) sets pin hole, the Horizontal Cantilever
(1) pin hole and the multi-diameter shaft of the arched arm (3) are equipped with.
5. according to the method for claim 1, it is characterised in that the connector includes the first two-way (5), the second two-way
(6), four-way (7), first two-way (5) connect the Horizontal Cantilever (1) and linking arm (4), and the second two-way (6) connection is flat
Bracket (1) and inclined cantilever (2), the four-way connection inclined cantilever (2), arched arm (3) and linking arm (4).
6. according to the method for claim 5, it is characterised in that first two-way (5), the second two-way (6), four-way (7)
Internal diameter be more than or equal to the Horizontal Cantilever (1), inclined cantilever (2), arched arm (3), the external diameter of linking arm (4), the described 1st
Logical (5), the second two-way (6), four-way (7) and the Horizontal Cantilever (1), inclined cantilever (2), arched arm (3), linking arm (4) fit connect
Connect.
7. according to the method for claim 5, it is characterised in that first two-way (5), the second two-way (6), four-way (7)
External diameter it is identical with the external diameter of the Horizontal Cantilever (1), inclined cantilever (2), arched arm (3), linking arm (4), the Horizontal Cantilever (1),
Inclined cantilever (2), arched arm (3), linking arm (4) block in crossover sites, with first two-way (5), the second two-way (6), four
Logical (7) gluing connection.
8. according to the method for claim 1, it is characterised in that the integral forming method is RTM after winding glass fibre
Injection moulding, or any of prepreg wound and solidified forming method.
9. according to the method for claim 8, it is characterised in that when using RTM injection molding sides after winding glass fibre
During method, the gel-injection mould along below 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 away from linking arm (4), set pumping logical on the outside of arched arm (3), below linking arm (4)
Road, and bleeding point (8) is set on the part inclined cantilever (2) between Horizontal Cantilever (1) and linking arm (4), glass will be wound
Core after fiber is put into mould, matched moulds, and RTM injections, be heating and curing shaping.
10. according to the method for claim 8, it is characterised in that, will be pre- when using prepreg wound and solidified forming method
Leaching material is put into mould, matched moulds, curing molding with 30-45 ° of winding core.
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| CN201710643381.9A CN107399251B (en) | 2017-07-31 | 2017-07-31 | Forming method of contact net supporting device |
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| CN201710643381.9A CN107399251B (en) | 2017-07-31 | 2017-07-31 | Forming method of contact net supporting device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116730636A (en) * | 2023-05-06 | 2023-09-12 | 温州益坤电气股份有限公司 | Wrist arm stay tube |
| CN118457376A (en) * | 2024-04-30 | 2024-08-09 | 温州益坤电气股份有限公司 | Cantilever beam and manufacturing process thereof |
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| CN101209584A (en) * | 2006-12-27 | 2008-07-02 | 厦门新凯复材科技有限公司 | Preformation method of vehicle frame |
| CN101342787A (en) * | 2008-08-12 | 2009-01-14 | 林清福 | Compound material special piece molding method and molding central spindle |
| CN103363204A (en) * | 2012-03-29 | 2013-10-23 | 上海杰事杰新材料(集团)股份有限公司 | Continuous-fiber-enhanced thermoplastic resin wound pipe and method for forming same |
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| CN116730636A (en) * | 2023-05-06 | 2023-09-12 | 温州益坤电气股份有限公司 | Wrist arm stay tube |
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