CN105703288A - Two-component polyurethane step cable bridge and manufacturing method thereof - Google Patents
Two-component polyurethane step cable bridge and manufacturing method thereof Download PDFInfo
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- CN105703288A CN105703288A CN201610105234.1A CN201610105234A CN105703288A CN 105703288 A CN105703288 A CN 105703288A CN 201610105234 A CN201610105234 A CN 201610105234A CN 105703288 A CN105703288 A CN 105703288A
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- component polyurethane
- dual
- side plate
- shaped
- cable testing
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
- H02G3/0456—Ladders or other supports
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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
- B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
- B29C70/52—Pultrusion, i.e. forming and compressing by continuously pulling through a die
- B29C70/521—Pultrusion, i.e. forming and compressing by continuously pulling through a die and impregnating the reinforcement before the die
-
- 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
- B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
- B29C70/52—Pultrusion, i.e. forming and compressing by continuously pulling through a die
- B29C70/525—Component parts, details or accessories; Auxiliary operations
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Composite Materials (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Architecture (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
The present invention relates to a two-component polyurethane step cable bridge having high corrosion resistance, high mechanical property, excellent toughness and fatigue resistance, low spoilage, long service life, environmental protection and no pollution, and a manufacturing method thereof. The width of the lower edge inner side edge of the opposite surfaces of each two-component polyurethane I-shaped side plate is more than one time of the width of the upper edge inner side edge of the opposite surfaces of each two-component polyurethane I-shaped side plate, and an arc connection structure is arranged between each lower edge inner side edge and each side plate; a plurality of two-component polyurethane cap-type rails are distributed between the two I-shaped side plates at regular intervals, the two ends of each two-component polyurethane cap-type rail have a convex arc connection structure, and the two end surfaces of each two-component polyurethane cap-type rail match the convex arc connection structure at the lower portion of each I-shaped side plate, wherein the two end surfaces of each two-component polyurethane cap-type rail and the convex arc connection structure at the lower portion of each I-shaped side plate are fixedly connected by rivets or bolts. The two-component polyurethane step cable bridge and the manufacturing method thereof have the advantages of light structure, high intensity, good flame retardation, corrosion resistance, aging resistance, safety and reliability, good ventilation and heat dissipation performances, environmental protection of the materials and the production process and the like.
Description
Technical field
The present invention relates to and a kind of both there is good high corrosion resistance master, high mechanical property, there is again excellent toughness and fatigue resistance, and it is low to have spoilage, long service life, environment friendly and pollution-free dual-component polyurethane step-shaped cable testing bridge and manufacture method, belong to nonmetallic cable crane span structure and manufacture field。
Background technology
CN103836264A, title " cable testing bridge ", it is characterised in that it includes being made up of at least two grooved pallet, and any one grooved pallet includes side wing and base plate, be connected by foot plug-in unit is fixing between bottom and the side end of base plate of side wing。This invention, by the fixing side wing of foot plug-in unit and base plate, so makes between side wing and base plate fixed, and side wing is less likely to occur to rock, and side wing and base plate can use relatively thin steel plate, reduces cost。Its weak point: this invention is not suitable for chemical enterprise wiring requirements, owing to chemicals is more serious to the corrosion of pipeline, general metal is with composite in use for some time, it is necessary to again lay。
Summary of the invention
Purpose of design: avoid the weak point in background technology, designs and a kind of had both had good high corrosion resistance master, high mechanical property, there is again excellent toughness and fatigue resistance, and it is low to have spoilage, long service life, environment friendly and pollution-free dual-component polyurethane step-shaped cable testing bridge and manufacture method。
Design: in order to realize above-mentioned purpose of design。1, adopt dual-component polyurethane as the design of cable testing bridge, be one of the technical characteristic of the present invention。So the purpose of design is in that: due to dual-component polyurethane, to have viscosity at ambient temperature low, and wetting property is good, and hot setting is fast, and production efficiency is high, and goods good toughness, mechanical property is good, corrosion resistant feature。The application it can be used as cable testing bridge to fill firming agent, not only efficiently solves the weak point that background technology exists, and drastically increases the service life of cable testing bridge, and solves to reduce the aerial discharge of chemical pollutant, reaches the purpose of energy-saving and emission-reduction。2, glass fiber yarn is the design haling tensioning glass fiber yarn, be the present invention technical characteristic two。So design purpose be in that: by after glass fiber yarn stretch-draw just just as by reinforced bar stretching, the bearing strength of the glass fiber yarn after its stretch-draw is above than being doubled before non-stretch-draw, and then makes the dual-component polyurethane after molding obtain the raising of essence as the bearing strength of cable testing bridge, comprcssive strength and tensile strength。3, be built-in with the design of multi-ring annular reinforcement under dual-component polyurethane I-shaped side plate opposite face along joint face along inner side, be the present invention technical characteristic three。So design purpose be in that: due to be built under dual-component polyurethane I-shaped side plate opposite face along inner side along multi-ring annular reinforcement be built in lower along inner side along along glass fiber yarn constitute be a complete reinforcement ledges, the glass fiber yarn that boring causes can not only be played enough strengthening actions by it, and define the orientation of boring, thus along inner side along the premise of bulk strength under not destroying dual-component polyurethane I-shaped side plate opposite face, it is achieved that many dual-component polyurethane shape for hat crosspieces are reliably connected with dual-component polyurethane I-shaped is interpleural。
Technical scheme 1: a kind of dual-component polyurethane step-shaped cable testing bridge, under two dual-component polyurethane I-shaped side plate opposite faces width along edge, inner side be on along inner side along more than the one of width times, and lower along inner side along and side plate between in arcs of recesses attachment structure, many dual-component polyurethane shape for hat crosspieces are equidistantly distributed between two I-shaped side plates and dual-component polyurethane shape for hat crosspiece both ends of the surface are convex attachment structure, and many dual-component polyurethane shape for hat crosspiece both ends of the surface mate and adopt rivet with the arcs of recesses attachment structure of I-shaped side plate bottom or bolt is fixing is connected。
Technical scheme 2: a kind of dual-component polyurethane step-shaped cable testing bridge, in I-shaped side plate, the content of glass fiber yarn and glass mat is 75%～80%, and dual-component polyurethane content is 25%～20%；In shape for hat crosspiece, the content of glass fiber yarn is 80%～85%, and dual-component polyurethane content is 20%～15%。
Technical scheme 3: a kind of dual-component polyurethane step-shaped cable testing bridge manufacture method, (1) by glass fibre raw material traverse preformation type frame, enter airtight glue-injection box, wherein I-shaped side plate is to enter high-pressure injection plastic box, hat crosspiece enters low-pressure glue-injection box, and high-pressure injection plastic box and low-pressure glue-injection box lay respectively on dither platen, then extension elongation is to 0.1～0.5mm, makes glass bridal veil fiber be in tensioning state；(2) by filling gun by dual-component polyurethane from Raw material pail, inject respectively in high-pressure injection plastic box and low-pressure glue-injection box；(3) glass fibre is sufficiently impregnated with dual-component polyurethane in glue-injection box, then starts dither plate and works 5～10 minutes；(4) glass fibre after being sufficiently impregnated with enters mold cavity；(5) impregnate the glass fibre of dual-component polyurethane in mold cavity internal heating curing molding, utilize extruder that shaped article is pulled out mould；(6) cutting off according to the length requirement of product, assemble by technological process, the finished product assembled puts into finished room。
The present invention, compared with background technology, has that structure is light, intensity is high, fire-retardant good, corrosion-resistant, ageing-resistant, safe and reliable a, advantage such as ventilation and heat performance is good, material and production process environmental protection。
Accompanying drawing explanation
Fig. 1 is the main TV structure schematic diagram of dual-component polyurethane step-shaped cable testing bridge。
Fig. 2 is the plan structure schematic diagram of Fig. 1。
Detailed description of the invention
Embodiment 1: with reference to attached Fig. 1 and 2。A kind of dual-component polyurethane step-shaped cable testing bridge, under two dual-component polyurethane I-shaped side plate 1 opposite faces width 3 along edge, inner side be on along inner side along more than one times of width 4, and lower along inner side along and side plate between in arcs of recesses attachment structure, many dual-component polyurethane shape for hat crosspieces 2 are equidistantly distributed between two I-shaped side plates 1 and dual-component polyurethane shape for hat crosspiece 2 both ends of the surface are convex attachment structure, and many dual-component polyurethane shape for hat crosspiece 2 both ends of the surface mate and adopt rivet with the arcs of recesses attachment structure of I-shaped side plate 1 bottom or bolt 5 is fixing is connected。It is built-in with multi-ring annular reinforcement 6 along inner side along joint face under two dual-component polyurethane I-shaped side plate 1 opposite faces, shade face, dual-component polyurethane shape for hat crosspiece 2 both sides aperture portion periphery is built-in with multi-ring annular reinforcement 6, and this multi-ring annular reinforcement 6 can be effectively improved the bulk strength of its periphery (under along edge, inner side)。
Embodiment 2: on the basis of embodiment 1, multi-ring annular reinforcement 6 is single or multiple lift。
Embodiment 3: on the basis of embodiment 1, a kind of dual-component polyurethane step-shaped cable testing bridge, in I-shaped side plate, the content of glass fiber yarn is 75%～80%, and dual-component polyurethane content is 25%～20%；In shape for hat crosspiece, the content of glass fiber yarn is 80%～85%, and dual-component polyurethane content is 20%～15%。
Embodiment 4: on the basis of embodiment 1, a kind of dual-component polyurethane step-shaped cable testing bridge, in I-shaped side plate, the content of glass fiber yarn and glass mat is 75%～80%, and dual-component polyurethane content is 25%～20%；In shape for hat crosspiece, the content of glass fiber yarn is 80%～85%, and dual-component polyurethane content is 20%～15%。
Embodiment 5: on the basis of embodiment 4, in I-shaped side plate, glass fiber yarn accounts for 55%～65%, glass mat 15%～25%。
Embodiment 6: on the basis of embodiment 3-5, glass fiber yarn is for haling tensioning glass fiber yarn。
Embodiment 7: on the basis of above-described embodiment, a kind of dual-component polyurethane step-shaped cable testing bridge manufacture method, (1) by glass fibre raw material traverse preformation type frame, enter airtight glue-injection box, wherein I-shaped side plate is to enter high-pressure injection plastic box, and hat crosspiece enters low-pressure glue-injection box, and high-pressure injection plastic box and low-pressure glue-injection box lay respectively on dither platen, then extension elongation is to 0.1～0.5mm, makes glass bridal veil fiber be in tensioning state；(2) by filling gun by dual-component polyurethane from Raw material pail, inject respectively in high-pressure injection plastic box and low-pressure glue-injection box；(3) glass fibre is sufficiently impregnated with dual-component polyurethane in glue-injection box, then starts dither plate and works 5～10 minutes；(4) glass fibre after being sufficiently impregnated with enters mold cavity；(5) impregnate the glass fibre of dual-component polyurethane in mold cavity internal heating curing molding, utilize extruder that shaped article is pulled out mould；(6) cutting off according to the length requirement of product, assemble by technological process, the finished product assembled puts into finished room。
It is to be understood that: although the word that the mentality of designing of the present invention is contrasted detailed by above-described embodiment describes; but these words describe; simply the simple text of mentality of designing of the present invention is described; rather than the restriction to mentality of designing of the present invention; any without departing from the combination of mentality of designing of the present invention, increase or amendment, each fall within protection scope of the present invention。
Claims (9)
1. a dual-component polyurethane step-shaped cable testing bridge, it is characterized in that: under two dual-component polyurethane I-shaped side plate (1) opposite faces width (3) along edge, inner side be on along inner side along more than one times of width (4), and lower along inner side along and side plate between in arcs of recesses attachment structure, many dual-component polyurethanes shape for hat crosspiece (2) are equidistantly distributed between two I-shaped side plates (1) and dual-component polyurethane shape for hat crosspiece (2) both ends of the surface are convex attachment structure, many dual-component polyurethane shape for hat crosspiece (2) both ends of the surface are mated with the arcs of recesses attachment structure of I-shaped side plate (1) bottom and are adopted rivet or bolt (5) to fix and are connected。
2. dual-component polyurethane step-shaped cable testing bridge according to claim 1, is characterized in that: be built-in with multi-ring annular reinforcement (6) along inner side along joint face under two dual-component polyurethane I-shaped side plate (1) opposite faces。
3. dual-component polyurethane step-shaped cable testing bridge according to claim 2, is characterized in that: multi-ring annular reinforcement (6) is single or multiple lift。
4. dual-component polyurethane step-shaped cable testing bridge according to claim 1, is characterized in that: shade face, dual-component polyurethane shape for hat crosspiece (2) both sides aperture portion periphery is built-in with multi-ring annular reinforcement (6)。
5. dual-component polyurethane step-shaped cable testing bridge according to claim 4, is characterized in that: multi-ring annular reinforcement (6) is single or multiple lift。
6. a dual-component polyurethane step-shaped cable testing bridge, is characterized in that: in I-shaped side plate, the content of glass fiber yarn and glass mat is 75%～80%, and dual-component polyurethane content is 25%～20%；In shape for hat crosspiece, the content of glass fiber yarn is 80%～85%, and dual-component polyurethane content is 20%～15%。
7. dual-component polyurethane step-shaped cable testing bridge according to claim 6, is characterized in that: in I-shaped side plate, glass fiber yarn accounts for 55%～65%, glass mat 15%～25%。
8. dual-component polyurethane step-shaped cable testing bridge according to claim 6, is characterized in that: glass fiber yarn is for haling tensioning glass fiber yarn。
9. a dual-component polyurethane step-shaped cable testing bridge manufacture method, is characterized in that:
(1) by glass fibre raw material traverse preformation type frame, enter airtight glue-injection box, wherein I-shaped side plate is to enter high-pressure injection plastic box, hat crosspiece enters low-pressure glue-injection box, and high-pressure injection plastic box and low-pressure glue-injection box lay respectively on dither platen, then extension elongation is to 0.1～0.5mm, makes glass bridal veil fiber be in tensioning state；
(2) by filling gun by dual-component polyurethane from Raw material pail, inject respectively in high-pressure injection plastic box and low-pressure glue-injection box；
(3) glass fibre is sufficiently impregnated with dual-component polyurethane in glue-injection box, then starts dither plate and works 5～10 minutes；
(4) glass fibre after being sufficiently impregnated with enters mold cavity；
(5) impregnate the glass fibre of dual-component polyurethane in mold cavity internal heating curing molding, utilize extruder that shaped article is pulled out mould；
(6) cutting off according to the length requirement of product, assemble by technological process, the finished product assembled puts into finished room。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610105234.1A CN105703288B (en) | 2016-02-26 | 2016-02-26 | Dual-component polyurethane step-shaped cable testing bridge and production method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610105234.1A CN105703288B (en) | 2016-02-26 | 2016-02-26 | Dual-component polyurethane step-shaped cable testing bridge and production method |
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| CN105703288A true CN105703288A (en) | 2016-06-22 |
| CN105703288B CN105703288B (en) | 2018-04-27 |
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| CN201610105234.1A Active CN105703288B (en) | 2016-02-26 | 2016-02-26 | Dual-component polyurethane step-shaped cable testing bridge and production method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107294019A (en) * | 2016-12-30 | 2017-10-24 | 上海建工五建集团有限公司 | Arc crane span structure and preparation method thereof |
| CN111469332A (en) * | 2020-04-22 | 2020-07-31 | 京仪股份有限公司 | Processing technology of hot-dip galvanized polyurethane bridge with fire resistance |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1102376A1 (en) * | 1999-11-19 | 2001-05-23 | Tehalit GmbH | Cable duct |
| CN201213210Y (en) * | 2008-06-13 | 2009-03-25 | 马纪财 | High strength iron belly glass steel bridge rack |
| CN201230173Y (en) * | 2008-03-28 | 2009-04-29 | 秦红兵 | Large distance high-strength light fiberglass cable bridge rack |
| CN103600499A (en) * | 2013-11-13 | 2014-02-26 | 杭州天允科技有限公司 | Processing method of polyurethane composite crane span structure |
| CN103606864A (en) * | 2013-11-13 | 2014-02-26 | 杭州天允科技有限公司 | Cable bridge having polyurethane composite material |
-
2016
- 2016-02-26 CN CN201610105234.1A patent/CN105703288B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1102376A1 (en) * | 1999-11-19 | 2001-05-23 | Tehalit GmbH | Cable duct |
| CN201230173Y (en) * | 2008-03-28 | 2009-04-29 | 秦红兵 | Large distance high-strength light fiberglass cable bridge rack |
| CN201213210Y (en) * | 2008-06-13 | 2009-03-25 | 马纪财 | High strength iron belly glass steel bridge rack |
| CN103600499A (en) * | 2013-11-13 | 2014-02-26 | 杭州天允科技有限公司 | Processing method of polyurethane composite crane span structure |
| CN103606864A (en) * | 2013-11-13 | 2014-02-26 | 杭州天允科技有限公司 | Cable bridge having polyurethane composite material |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107294019A (en) * | 2016-12-30 | 2017-10-24 | 上海建工五建集团有限公司 | Arc crane span structure and preparation method thereof |
| CN111469332A (en) * | 2020-04-22 | 2020-07-31 | 京仪股份有限公司 | Processing technology of hot-dip galvanized polyurethane bridge with fire resistance |
| CN111469332B (en) * | 2020-04-22 | 2021-10-08 | 京仪股份有限公司 | Processing technology of hot-dip galvanized polyurethane bridge with fire resistance |
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| CN105703288B (en) | 2018-04-27 |
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