CN107399251B - Forming method of contact net supporting device - Google Patents
Forming method of contact net supporting device Download PDFInfo
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- CN107399251B CN107399251B CN201710643381.9A CN201710643381A CN107399251B CN 107399251 B CN107399251 B CN 107399251B CN 201710643381 A CN201710643381 A CN 201710643381A CN 107399251 B CN107399251 B CN 107399251B
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- cantilever
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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
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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
- B60M1/20—Arrangements for supporting or suspending trolley wires, e.g. from buildings
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Abstract
The application discloses a preparation method of a contact net supporting device, which comprises the following steps: 1) processing a core material, namely processing the core material into a flat cantilever (1), an inclined cantilever (2), an arc-shaped arm (3) and a connecting arm (4) respectively; 2) splicing core materials, namely splicing and fixing the core materials through connecting pieces; 3) and (4) integral molding. The application provides a contact net strutting arrangement integrated into one piece method, simple, high-efficient preparation strutting arrangement, simultaneously, the contact net strutting arrangement light in weight, intensity height, insulating properties that prepare are good.
Description
Technical Field
The application relates to the technical field of electrified rail transit, in particular to a forming method of a contact net supporting device.
Background
The overhead power transmission line is a power transmission line which is erected above a track traffic line and supplies power to an electric locomotive, the overhead power transmission line operates in an outdoor complex environment, and the stability and the safety of the overhead power transmission line are directly related to the operation safety of track traffic. The contact net supporting device is arranged on the supporting column and used for supporting the suspension of the contact net and playing a role in transferring load. In actual use, the suspension device is required to have enough mechanical strength, and the suspension device is simple and light in structure as much as possible and easy to install, maintain and replace.
The existing contact net supporting device mainly comprises a steel cantilever supporting device and an aluminum alloy cantilever supporting device. These two kinds of strutting arrangement all have tens or even tens spare part to form through form such as articulated and bolted connection, and the installation is maintained work load and construction quality and is difficult to guarantee, and the insulator price is also higher simultaneously.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide the contact net supporting device which is simple in forming method and high in efficiency, and meanwhile, the prepared contact net supporting device is light in weight, high in strength, excellent in insulating property, suitable for various climatic conditions, capable of improving the reliability of the contact net and reducing the difficulty of installation and maintenance work.
The technical scheme provided by the invention is as follows:
a preparation method of a contact net supporting device comprises the following steps:
1) processing a core material, namely processing the core material into a flat cantilever, an inclined cantilever, an arc-shaped arm and a connecting arm respectively;
2) splicing core materials, namely splicing and fixing the core materials through connecting pieces;
3) and (4) integral molding.
Preferably, the core material is any one of an unsaturated polyester-based fiber-reinforced pipe, a vinyl fiber-reinforced pipe, an epoxy fiber-reinforced pipe, and a PVC pipe.
Preferably, the notches of the flat cantilever, the inclined cantilever, the arc-shaped arm and the connecting arm of the core material are arc notches or straight notches, and the angles of the arc notches or the straight notches are matched with the connecting parts.
Preferably, a stepped shaft is arranged at the position where the arc-shaped arm is connected with the flat wrist arm, a bolt hole is arranged at the position where the flat wrist arm is connected with the arc-shaped arm, and the bolt hole of the flat wrist arm is matched with the stepped shaft of the arc-shaped arm.
Preferably, the connecting piece comprises a first two-way, a second two-way and a four-way, the first two-way is connected with the flat cantilever and the connecting arm, the second two-way is connected with the flat cantilever and the inclined cantilever, and the four-way is connected with the inclined cantilever, the arc-shaped arm and the connecting arm.
Preferably, the inner diameters of the first two-way, the second two-way and the four-way are larger than or equal to the outer diameters of the flat cantilever, the inclined cantilever, the arc-shaped arm and the connecting arm, and the first two-way, the second two-way and the four-way are connected with the flat cantilever, the inclined cantilever, the arc-shaped arm and the connecting arm in a sleeved mode.
Preferably, the outer diameters of the first two-way, the second two-way and the four-way are the same as the outer diameters of the flat cantilever, the inclined cantilever, the arc-shaped arm and the connecting arm, and the flat cantilever, the inclined cantilever, the arc-shaped arm and the connecting arm are cut off at the crossed part and are connected with the first two-way, the second two-way and the four-way in an adhesive manner.
Preferably, the integral molding method is any one of RTM injection molding after winding glass fiber, or prepreg winding curing molding.
Preferably, when the RTM injection molding method after winding the glass fiber is adopted, the glue injection mold is provided with glue injection channels along the lower part of the flat cantilever, the lower part of the inclined cantilever, the inner side of the arc-shaped arm, the upper part of the connecting arm and the upper part of the inclined cantilever between the flat cantilever and the connecting arm, air exhaust channels are arranged along the upper part of the flat cantilever, the upper part of the inclined cantilever far away from the connecting arm, the outer side of the arc-shaped arm and the lower part of the connecting arm, an air exhaust opening is arranged on the inclined cantilever between the flat cantilever and the connecting arm, a core material wound with the glass fiber is placed into the mold, mold closing, RTM injection and heating curing molding are carried out.
Preferably, when the prepreg winding curing molding method is adopted, the prepreg is wound around a core material at an angle of 30-45 degrees, placed into a mold, closed, cured and molded.
According to the method provided by the invention, the core materials are respectively processed into the flat cantilever, the inclined cantilever, the arc-shaped arm and the connecting arm, and then the core materials are spliced and fixed through the connecting pieces and integrally formed, so that the prepared contact net supporting device is light in weight, high in strength and excellent in insulating property, is suitable for various climatic conditions, can improve the reliability of the contact net, and reduces the difficulty of installation and maintenance work.
The arc notch and the straight notch are respectively matched with the connecting parts of the arms, so that stability and firmness of all the components of the core material during splicing are guaranteed.
The arc arm with the position that flat cantilever is connected sets up the step shaft, flat cantilever with the position that the arc arm is connected sets up the bolt hole to the step shaft sets up with the bolt hole cooperation, then arc arm and flat cantilever pass through the mode cooperation installation of bolt, guarantee stable, the firm installation of arc arm.
According to the shape design of the contact net supporting device, the inner diameter of the first two-way, the second two-way and the four-way is larger than or equal to the outer diameters of the flat cantilever, the inclined cantilever, the arc-shaped arm and the connecting arm, and then the first two-way, the second two-way and the four-way can be connected with the flat cantilever, the inclined cantilever, the arc-shaped arm and the connecting arm in a sleeved mode.
According to the invention, the connecting piece is arranged at the cross part of the contact net supporting device, so that the stable connection of all parts can be ensured. Except that the hollow connecting pieces are used for connecting the arms in a sleeved mode, the arms of the integral supporting device can be cut off at the crossed positions (namely the positions of the connecting pieces), the arms and the connecting pieces are spliced and glued, and the thickness and the size of the integral forming can be guaranteed to be consistent.
Except that circular arc incision or straight incision, step shaft and bolt hole cooperation, connecting piece registrate are connected, connect between each part, can also use the structure to glue, ensure the stable firm connection of each part, preserve the stability of structure or performance in long-term, outdoor use.
RTM injection, which refers to Resin transfer molding (Resin transfer molding) injection, is a process whereby Resin is injected into a closed mold to wet the reinforcement material and cure. Considering that the contact net supporting device of the invention has a complex structure, the length is about 2-5m, the height is 1-3m, and the width is only the width (about 0.05-0.3m) of the diameter of each cantilever, a closed-loop crossing structure is formed, the invention adopts a line-to-line injection mode. Line-to-line injection, the whole principle of setting up of injecting glue mould is, from interior to exterior, inside sets up the injecting glue passageway, and the outside sets up the air bleed passageway. Specifically, the glue injection mold is provided with a glue injection channel along the lower part of the flat cantilever, the lower part of the inclined cantilever, the inner side of the arc-shaped arm and the upper part of the connecting arm and the upper part of the inclined cantilever positioned between the flat cantilever and the connecting arm, an air exhaust channel along the upper part of the flat cantilever, the upper part of the inclined cantilever far away from the connecting arm, the outer side of the arc-shaped arm and the lower part of the connecting arm, and an air exhaust opening is formed in the inclined cantilever positioned between the flat cantilever and the connecting arm. By adopting line-to-line injection, the glue injection length is changed from the original several meters into the circumference (about 0.2-0.6m) of each arm, so that the glue injection difficulty is reduced, the glue injection time is shortened, and the quality of the obtained finished product supporting device is good.
The prepreg is a composition prepared by impregnating continuous fibers or fabrics with a resin matrix under strictly controlled conditions to prepare the resin matrix and a reinforcement, and belongs to an intermediate material for preparing composite materials. The prepreg includes a reinforcing material (glass fiber, aramid fiber, etc.) and a matrix material (epoxy resin, phenol resin, cyanamide resin, etc.). According to the invention, the contact net supporting device with excellent performance can be obtained by winding the prepreg on the core material and then curing and molding.
The larger the angle is, the easier the prepreg is to wind, and the mechanical properties in the length direction and the diameter direction are relatively good. In the invention, the prepreg is wound at any angle of 30-45 degrees, and the finally prepared contact net supporting device can meet the requirements on performance through analysis and measurement.
The contact net supporting device prepared by the method provided by the invention meets the requirements of the industrial standard on physical properties, mechanical properties, electrical properties and insulation, can bear enough horizontal and vertical loads, and does not generate plastic deformation or slippage in a cantilever structure.
The integral forming method of the contact net supporting structure provided by the invention is simple and easy to operate, and the prepared supporting device is good in performance, high in strength and light in weight. Through adopting high insulating combined material, improved the security of contact net operation, reduced contact net strutting arrangement's the installation and the degree of difficulty and the work load of later maintenance.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic view of a catenary support made in an embodiment of the present disclosure;
fig. 2 is a schematic structural view of a catenary support device prepared in an embodiment of the present invention;
fig. 3 is a schematic view of a circular arc notch of the catenary supporting device prepared in the embodiment of the invention;
fig. 4 is a schematic view of a straight cut of a catenary support device prepared in an embodiment of the present disclosure;
FIG. 5 is a schematic view of a stepped shaft of an arc arm prepared in an embodiment of the present invention;
FIG. 6 is a schematic illustration of the bayonet connection of the arcuate arm and the wrist-flat arm made in accordance with an embodiment of the present invention;
FIG. 7 is a first schematic view of a connector according to an embodiment of the present invention (socketed);
FIG. 8 is a second illustration (bonding) of a connector according to an embodiment of the invention
FIG. 9 is a first schematic diagram (socket) of a first two-way in an embodiment of the present invention;
FIG. 10 is a second schematic illustration of a first two-way connection (bonding) in accordance with an embodiment of the present invention;
FIG. 11 is a first schematic diagram (socket joint) of a second embodiment of the present invention;
FIG. 12 is a second schematic illustration (adhesive) of a second two-way embodiment of the invention;
FIG. 13 is a first schematic diagram of a cross-joint (bell socket) in an embodiment of the present invention;
FIG. 14 is a second illustration of the cross-piece of the embodiment of the invention (bonding);
fig. 15 is a schematic diagram of glue injection and air exhaust parts of a glue injection mold of the contact net supporting device prepared in the embodiment of the invention;
fig. 16 is a schematic prepreg winding (45 °) of the catenary support device prepared in the example of the present invention;
fig. 17 is a schematic prepreg winding (30 °) of the catenary support device prepared in the example of the present invention;
reference numerals: 1-flat cantilever; 2-oblique wrist arm; 3-an arc-shaped arm; 4-a linker arm; 5-a first two-way; 6-second two-way; 7-four-way; 8-an air extraction opening; a-a glue injection channel; b-an air exhaust channel; c-a glass fiber ply transition area; d-flange edge of upper mould of the glue injection mould; e, injecting glue to the flange edge of the lower die of the die; f, a first sealing ring of the glue injection mold; g-a second sealing ring of the glue injection mold;
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
As shown in fig. 1 to 17, an embodiment of the present invention provides a method for manufacturing a supporting device of a catenary, including the following steps:
1) processing a core material, namely processing the core material into a flat cantilever 1, an inclined cantilever 2, an arc-shaped arm 3 and a connecting arm 4 respectively;
2) splicing core materials, namely splicing and fixing the core materials through connecting pieces;
3) and (4) integral molding.
Preferably, the core material is any one of a composite material pipe unsaturated polyester-based fiber reinforced pipe, a vinyl fiber reinforced pipe, an epoxy-based fiber reinforced pipe and a PVC pipe.
According to the method provided by the invention, the core materials are respectively processed into the flat cantilever 1, the inclined cantilever 2, the arc-shaped arm 3 and the connecting arm 4, and then the core materials are spliced and fixed through the connecting pieces and integrally formed, so that the prepared contact net supporting device is light in weight, high in strength, excellent in insulating property, suitable for various climatic conditions, capable of improving the reliability of the contact net and reducing the difficulty of installation and maintenance work.
Preferably, the notches of the flat cantilever 1, the inclined cantilever 2, the arc-shaped arm 3 and the connecting arm 4 of the core material are arc notches or straight notches, and the angles of the arc notches or the straight notches are matched with the connecting parts.
The arc notches are shown in figure 3, and the straight notches are shown in figure 4 and are respectively matched with the connecting parts of the arms, so that stability and firmness of all components of the core material during splicing are guaranteed.
Preferably, a stepped shaft is arranged at the position where the arc-shaped arm 3 is connected with the flat wrist arm 1, a bolt hole is arranged at the position where the flat wrist arm 1 is connected with the arc-shaped arm 3, and the bolt hole of the flat wrist arm 1 is matched with the stepped shaft of the arc-shaped arm 3.
As shown in fig. 5 to 6, a stepped shaft is arranged at a position where the arc-shaped arm 3 is connected with the flat-wrist arm 1, a bolt hole is arranged at a position where the flat-wrist arm 1 is connected with the arc-shaped arm 3, and the stepped shaft is arranged in cooperation with the bolt hole, so that the arc-shaped arm 3 and the flat-wrist arm 1 are installed in cooperation in a bolt manner, and stable and firm installation of the arc-shaped arm is ensured.
Preferably, the connecting piece comprises a first two-way 5, a second two-way 6 and a four-way 7, the first two-way 5 is connected with the flat cantilever 1 and the connecting arm 4, the second two-way 6 is connected with the flat cantilever 1 and the inclined cantilever 2, and the four-way is connected with the inclined cantilever 2, the arc-shaped arm 3 and the connecting arm 4.
Preferably, the inner diameters of the first two-way 5, the second two-way 6 and the four-way 7 are larger than or equal to the outer diameters of the flat cantilever 1, the inclined cantilever 2, the arc-shaped arm 3 and the connecting arm 4, and the first two-way 5, the second two-way 6 and the four-way 7 are connected with the flat cantilever 1, the inclined cantilever 2, the arc-shaped arm 3 and the connecting arm 4 in a sleeved mode.
According to the shape design of the contact net supporting device, the first two-way 5, the second two-way 6 and the four-way 7 are prepared, the inner diameters of the prepared first two-way 5, second two-way 6 and four-way 7 are larger than or equal to the outer diameters of the flat cantilever 1, the inclined cantilever 2, the arc-shaped arm 3 and the connecting arm 4, and then the first two-way 5, the second two-way 6 and the four-way 7 can be connected with the flat cantilever 1, the inclined cantilever 2, the arc-shaped arm 3 and the connecting arm 4 in a sleeved mode.
Preferably, the outer diameters of the first two-way 5, the second two-way 6 and the four-way 7 are the same as the outer diameters of the flat cantilever 1, the inclined cantilever 2, the arc-shaped arm 3 and the connecting arm 4, and the flat cantilever 1, the inclined cantilever 2, the arc-shaped arm 3 and the connecting arm 4 are cut off at the crossed part and are connected with the first two-way 5, the second two-way 6 and the four-way 7 in an adhesive manner.
According to the invention, the connecting piece is arranged at the cross part of the contact net supporting device, so that the stable connection of all parts can be ensured. Except that the hollow connecting pieces are used for connecting the arms in a sleeved mode, the arms of the integral supporting device can be cut off at the crossed positions (namely the positions of the connecting pieces), the arms and the connecting pieces are spliced and glued, and the thickness and the size of the integral forming can be guaranteed to be consistent.
Except that circular arc incision or straight incision, step shaft and bolt hole cooperation, connecting piece registrate are connected, connect between each part, can also use the structure to glue, ensure the stable firm connection of each part, preserve the stability of structure or performance in long-term, outdoor use.
Preferably, the integral molding method is any one of RTM injection molding after winding glass fiber, or prepreg winding curing molding.
Preferably, when the RTM injection molding method after winding the glass fiber is adopted, the glue injection mold is provided with a glue injection channel along the lower part of the flat cantilever 1, the lower part of the inclined cantilever 2, the inner side of the arc-shaped arm 3, the upper part of the connecting arm 4 and the upper part of the inclined cantilever 2 between the flat cantilever 1 and the connecting arm 4, an air exhaust channel is provided along the upper part of the flat cantilever 1, the upper part of the inclined cantilever 2 far away from the connecting arm 4, the outer side of the arc-shaped arm 3 and the lower part of the connecting arm 4, an air exhaust opening 8 is formed in the inclined cantilever 2 between the flat cantilever 1 and the connecting arm 4, a core material wound with the glass fiber is placed into the mold, mold closing is performed, RTM injection is performed, and the core material is heated.
Preferably, when the prepreg winding curing molding method is adopted, the prepreg is wound around a core material at an angle of 30-45 degrees, placed into a mold, closed, cured and molded.
RTM injection, which refers to Resin transfer molding (Resin transfer molding) injection, is a process whereby Resin is injected into a closed mold to wet the reinforcement material and cure. Considering that the contact net supporting device of the invention has a complex structure, the length is about 2-5m, the height is 1-3m, and the width is only the width (about 0.05-0.3m) of the diameter of each cantilever, a closed-loop crossing structure is formed, the invention adopts a line-to-line injection mode. Line-to-line injection, the whole principle of setting up of injecting glue mould is, from interior to exterior, inside sets up the injecting glue passageway, and the outside sets up the air bleed passageway. Specifically, the glue injection mold is provided with a glue injection channel along the lower part of the flat cantilever, the lower part of the inclined cantilever, the inner side of the arc-shaped arm and the upper part of the connecting arm and the upper part of the inclined cantilever positioned between the flat cantilever and the connecting arm, an air exhaust channel along the upper part of the flat cantilever, the upper part of the inclined cantilever far away from the connecting arm, the outer side of the arc-shaped arm and the lower part of the connecting arm, and an air exhaust opening is formed in the inclined cantilever positioned between the flat cantilever and the connecting arm. By adopting line-to-line injection, the glue injection length is changed from the original several meters into the circumference (about 0.2-0.6m) of each arm, so that the glue injection difficulty is reduced, the glue injection time is shortened, and the quality of the obtained finished product supporting device is good.
The prepreg is a composition prepared by impregnating continuous fibers or fabrics with a resin matrix under strictly controlled conditions to prepare the resin matrix and a reinforcement, and belongs to an intermediate material for preparing composite materials. The prepreg includes a reinforcing material (glass fiber, aramid fiber, etc.) and a matrix material (epoxy resin, phenol resin, cyanamide resin, etc.). According to the invention, the contact net supporting device with excellent performance can be obtained by winding the prepreg on the core material and then curing and molding.
The larger the angle is, the easier the prepreg is to wind, and the mechanical properties in the length direction and the diameter direction are relatively good. In the invention, the prepreg is wound at any angle of 30-45 degrees, and the finally prepared contact net supporting device can meet the requirements on performance through analysis and measurement.
The contact net supporting device prepared by the method provided by the invention meets the requirements of the industrial standard on physical properties, mechanical properties, electrical properties and insulation, can bear enough horizontal and vertical loads, and does not generate plastic deformation or slippage in a cantilever structure.
The integral forming method of the contact net supporting structure provided by the invention is simple and easy to operate, and the prepared supporting device is good in performance, high in strength and light in weight. Through adopting high insulating combined material, improved the security of contact net operation, reduced contact net strutting arrangement's the installation and the degree of difficulty and the work load of later maintenance.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. The preparation method of the contact net supporting device is characterized by comprising the following steps:
1) processing a core material, namely processing the core material into a flat cantilever (1), an inclined cantilever (2), an arc-shaped arm (3) and a connecting arm (4) respectively;
2) splicing core materials, namely splicing and fixing the core materials through connecting pieces;
3) integrally forming;
the notches of the flat cantilever (1), the inclined cantilever (2), the arc-shaped arm (3) and the connecting arm (4) of the core material are arc notches or straight notches, and the angles of the arc notches or the straight notches are matched with the connecting part; a stepped shaft is arranged at the part where the arc-shaped arm (3) is connected with the flat wrist arm (1), a bolt hole is arranged at the part where the flat wrist arm (1) is connected with the arc-shaped arm (3), and the bolt hole of the flat wrist arm (1) is matched with the stepped shaft of the arc-shaped arm (3);
the connecting piece comprises a first two-way (5), a second two-way (6) and a four-way (7), the first two-way (5) is connected with the flat cantilever (1) and the connecting arm (4), the second two-way (6) is connected with the flat cantilever (1) and the inclined cantilever (2), and the four-way is connected with the inclined cantilever (2), the arc-shaped arm (3) and the connecting arm (4); the outer diameters of the first two-way (5), the second two-way (6) and the four-way (7) are the same as those of the flat cantilever (1), the inclined cantilever (2), the arc-shaped arm (3) and the connecting arm (4), and the flat cantilever (1), the inclined cantilever (2), the arc-shaped arm (3) and the connecting arm (4) are cut off at the crossed part and are connected with the first two-way (5), the second two-way (6) and the four-way (7) in an adhesive manner.
2. The method according to claim 1, wherein the core material is any one of an unsaturated polyester-based fiber-reinforced pipe, a vinyl fiber-reinforced pipe, an epoxy-based fiber-reinforced pipe, and a PVC pipe.
3. The method of claim 1, wherein the bulk molding method is any one of RTM injection molding after winding glass fiber, or prepreg winding curing molding.
4. The method according to claim 3, wherein when the RTM injection molding method after winding the glass fiber is adopted, the glue injection mold is provided with glue injection channels along the lower part of the flat cantilever (1), the lower part of the inclined cantilever (2), the inner side of the arc-shaped arm (3), the upper part of the connecting arm (4) and the upper part of the partial inclined cantilever (2) between the flat cantilever (1) and the connecting arm (4), air extraction channels along the upper part of the flat cantilever (1), the partial upper part of the partial inclined cantilever (2) far away from the connecting arm (4), the outer side of the arc-shaped arm (3) and the lower part of the connecting arm (4), and air extraction ports (8) are arranged on the partial inclined cantilever (2) between the flat cantilever (1) and the connecting arm (4), the core material after winding the glass fiber is placed in the mold, and the mold is closed, RTM injection and heating curing molding are carried out.
5. The method according to claim 3, wherein when the prepreg winding curing molding method is adopted, the prepreg is wound around a core material at an angle of 30-45 °, placed in a mold, clamped, and cured to mold.
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| Application Number | Priority Date | Filing Date | Title |
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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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| CN107399251A CN107399251A (en) | 2017-11-28 |
| CN107399251B true CN107399251B (en) | 2020-04-07 |
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| CN1039980C (en) * | 1992-09-25 | 1998-09-30 | 陈勋森 | Bicycle frame of composite material and its making method |
| JP3129983B2 (en) * | 1997-03-05 | 2001-01-31 | 住友ゴム工業株式会社 | Racket frame and method of manufacturing the racket frame |
| 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 |
| CN101342787B (en) * | 2008-08-12 | 2012-02-29 | 林清福 | Compound material special tubing molding method |
| CN103363204B (en) * | 2012-03-29 | 2017-02-22 | 上海杰事杰新材料(集团)股份有限公司 | Continuous-fiber-enhanced thermoplastic resin wound pipe |
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