CN105731248A - Box girder of bridge crane and manufacturing method of box girder - Google Patents
Box girder of bridge crane and manufacturing method of box girder Download PDFInfo
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Abstract
The invention relates to a box girder of a bridge crane. The box girder is mainly made of carbon fiber composites and sequentially comprises a lining layer, an adhesive coating, a fiber-laid composite inner layer, a fiber-laid composite middle layer, a fiber-laid composite outer layer and a glass fiber cloth outer protective layer from inside to outside. In the manufacturing process, a girder lining is provided firstly, then the adhesive coating is smeared on the outer surface of the girder coating, and the fiber-laid composite inner layer, the fiber-laid composite middle layer and the fiber-laid composite outer layer are sequentially laid on the outer surface of the adhesive coating; then the glass fiber cloth outer protective layer prepared from 90-degree glass fiber prepreg is laid on the outer surface of the fiber-laid composite outer layer; and then the laid girder is heated and cured. By the adoption of the box girder of the bridge crane and the manufacturing method of the box girder, the weight of the girder can be greatly reduced, the strength, the rigidity and the stability of the girder are improved, and accordingly the performance of the girder is improved.
Description
Technical field
The present invention relates to bridge crane technical field, specifically, relate to box type girder and the manufacture method thereof of a kind of bridge crane.
Background technology
Bridge crane, as the crane gear of indoor and outdoor warehouse, Factory Building, harbour and outdoor yard etc. material handling, has the advantages such as bearing capacity is big, functional reliability is high, manufacturing process is simple.The crane span structure of bridge crane along be laid on both sides overhead on track longitudinally running, it is possible to make full use of crane span structure space below handling material, not by the obstruction of ground installation.It is to use a kind of hoisting machinery widest in area, quantity is maximum.The demand of bridge crane grows with each passing day in recent years, and the yield of the annual bridge crane of China is more than 100,000 tons.Bridge crane develop the development that will drive its associated components rapidly.
Box type girder is main force-summing element in Overhead Crane Bridge, it is mainly metal structure, by two blocks, left and right web, upper and lower two cover plates and some large and small dividing plates and reinforcement gusset form, its weight account for crane deadweight 30%～50%, its simple in construction, easily manufactured, be suitable to produce by batch, but deadweight is bigger.Along with commercial production scale constantly expands, production efficiency improves day by day, and material handling trucking expenses proportion is gradually increased in process of producing product, large-scale or high speed bridge crane demand is promoted constantly to increase, lifting capacity is increasing, operating rate is more and more higher, this just requires that box type girder not only wants safety good, reliability is high, there is the durability of excellence, fault-free, maintainability and its usage economy, and want lightness, from heavy and light, overall dimensions height is little, the construction cost of factory building thing can be substantially reduced, operation power and the operating cost of crane can also be reduced simultaneously.Although designer adopts finite element analysis technology that main beam structure is optimized design, suitably alleviate the weight of girder, but still in use to there is deadweight excessive for girder, the problems such as energy loss is too much.
Chinese utility model patent CN202245734U discloses the girder of a kind of box beam bridge crane, including upper cover plate, lower cover, web, angle steel and gusset；Upper cover plate and lower cover are welded to connect by web；Angle steel is vertically set between upper cover plate and lower cover；Gusset is arranged on two ends and the middle part of upper cover plate, and is positioned at the lower surface of upper cover plate, and web middle part arranges multiple through hole, and lower cover two-end part arranges multiple through hole, all adopts and be welded to connect between angle steel and upper cover plate, lower cover.The girder of the box beam bridge crane of this kind of structure is by being welded to connect upper cover plate and lower cover by web, angle steel is vertically set between upper cover plate and lower cover, all adopt between angle steel and upper cover plate, lower cover and the mode such as be welded to connect and alleviate the consumption that makes of structural material, reach the requirement of loss of weight, but, this kind of weight losing method can only suitably reduce the weight of girder, and the girder weight obtained is still bigger.
Therefore, the box type girder of bridge crane is improved significantly to alleviate the weight of girder, be bridge crane technical problem urgently to be resolved hurrily.
Summary of the invention
The technical problem to be solved is, for the problem that the box weight of existing bridge crane is big, it is provided that a kind of lightweight, intensity is high, the box type girder of the bridge crane of rigidity and good stability.
In order to achieve the above object, the box type girder of the bridge crane of the present invention, mainly it is made up of carbon fibre composite, and described box type girder is followed successively by inner liner from inside to outside, adhesive coating, fiber lay down covers composite inner, and fiber lay down covers composite intermediate layer, fiber lay down covers composite outer layer and glass fabric external protection coating.
The box type girder of above-mentioned bridge crane, wherein, described inner liner adopts stainless steel.
The box type girder of above-mentioned bridge crane, wherein, the material of described adhesive coating adopts epoxy resin, phenolic resin or polyurethane resin.
The box type girder of above-mentioned bridge crane, wherein, described fiber lay down covers composite inner, and described fiber lay down covers composite intermediate layer, described fiber lay down covers composite outer layer and the material of described glass fabric external protection coating all adopts carbon fiber prepreg.
The box type girder of above-mentioned bridge crane, wherein, described fiber lay down covers the carbon fiber prepreg that composite inner adopts the T700 of 12K.
The box type girder of above-mentioned bridge crane, wherein, described fiber lay down covers the carbon fiber prepreg of the T700 of composite intermediate layer employing 12K or the carbon fiber prepreg of the T800 of 12K.
The box type girder of above-mentioned bridge crane, wherein, described fiber lay down covers the carbon fiber prepreg that composite outer layer adopts the T700 of 12K.
The box type girder of above-mentioned bridge crane, wherein, described glass fabric external protection coating adopts the glass fibre prepreg of 12K.
The box type girder of above-mentioned bridge crane, wherein, described fiber lay down covers composite inner, and described fiber lay down covers composite intermediate layer, described fiber lay down covers composite outer layer and the gross thickness of described glass fabric external protection coating is 3～12mm.
Further, the present invention provides the manufacture method of the box type girder of a kind of above-mentioned bridge crane, comprises the steps:
Girder liner is provided；
Outer surface at described girder liner smears one layer of adhesive coating；
Outer surface at adhesive coating spreads the carbon fiber prepreg covering 90 ° of angles and covers composite inner to obtain fiber lay down；
Fiber lay down cover the outer surface paving of composite inner cover ± carbon fiber prepreg at 60 ° of angles and ± 30 ° of angles obtains fiber lay down and covers composite intermediate layer；
Cover the outer surface paving in composite intermediate layer in fiber lay down to cover the carbon fiber prepreg at 0 ° of angle and obtain fiber lay down and cover composite outer layer；
Cover the outer surface paving of composite outer layer in fiber lay down to cover the glass fibre prepreg at 90 ° of angles and obtain glass fabric external protection coating；
It is heated solidifying by the girder that paving has been covered.
The manufacture method of the box type girder of above-mentioned bridge crane, wherein, in described heat-curing step, solidification temperature ranges for 80～180 DEG C, and heating rate is 3～8 DEG C/min, and adopts the mode of gradient solidification, finally naturally cools to room temperature.
The manufacture method of the box type girder of above-mentioned bridge crane, wherein, described fiber lay down covers composite inner, and described fiber lay down covers composite intermediate layer, described fiber lay down covers composite outer layer and the carbon fiber prepreg of the described glass fabric external protection coating same model of employing or different model.
The beneficial functional of the present invention is in that: owing to carbon fibre composite has high intensity, high-modulus, the excellent properties such as lightweight, use it for the box type girder preparing bridge crane, can significantly alleviate the weight of girder, improve the intensity of girder, rigidity and stability, thus improving the performance of girder.Further, adopt high-strength carbon fiber composite as interior paving coating and high strength glass fiber as external protection coating, carbon fibre composite high intensity, high-modulus, fatigue proof advantage are given full play to, further improve the performance of girder, compared with steel girder, under girder length and lifting weight same case, the maximum weight of lifting improves about 60%, and significantly reduce the weight (being about the 50～70% of same gauge steel material girder weight) of girder, it is ensured that girder has better operation and security performance.
More, fiber lay down is covered composite layer and is carried out paving in different angles mode and cover, and substantially increases the intensity of composite layer.
Further, in the present invention, the mode adopting gradient to solidify, naturally cool to room temperature, it is ensured that the physical and mechanical property of the box type girder of bridge crane and presentation quality.
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Accompanying drawing explanation
Fig. 1 is the structural representation of the box type girder of the bridge crane of the present invention；
Fig. 2 is the process chart of the box type girder of the bridge crane manufacturing the present invention.
Wherein, accompanying drawing labelling
1 inner liner
2 adhesive coatings
3 fiber lay down cover composite inner
4 fiber lay down cover composite intermediate layer
5 fiber lay down cover composite outer layer
6 glass fabric external protection coatings
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, technical solution of the present invention is described in detail, to be further understood that the purpose of the present invention, scheme and effect, but is not intended as the restriction of claims protection domain of the present invention.
The box type girder of the bridge crane of the present invention is mainly made up of carbon fibre composite, consult Fig. 1, as shown in the figure, box type girder is followed successively by inner liner 1 from inside to outside, adhesive coating 2, fiber lay down covers composite inner 3, and fiber lay down covers composite intermediate layer 4, fiber lay down covers composite outer layer 5 and glass fabric external protection coating 6.It is preferred that inner liner 1 adopts stainless steel；The material of adhesive coating 2 adopts epoxy resin, phenolic resin or polyurethane resin；Fiber lay down covers composite inner 3, and fiber lay down covers composite intermediate layer 4, fiber lay down is covered the material of composite outer layer 5 and glass fabric external protection coating 6 and all adopted carbon fiber prepreg.
As preferred embodiment, the box type girder of the bridge crane of the present invention, fiber lay down covers the carbon fiber prepreg that composite inner 3 adopts the T700 of 12K.Fiber lay down is covered composite intermediate layer 4 and is adopted the carbon fiber prepreg of T700 of 12K or the carbon fiber prepreg of the T800 of 12K.Fiber lay down covers the carbon fiber prepreg that composite outer layer 5 adopts the T700 of 12K.Glass fabric external protection coating 6 adopts the glass fibre prepreg of 12K.And, fiber lay down covers composite inner 3, and fiber lay down covers composite intermediate layer 4, fiber lay down is covered the gross thickness of composite outer layer 5 and glass fabric external protection coating 6 and is preferably 3～12mm.
Consult Fig. 2, when manufacturing the box type girder of bridge crane of the present invention, comprise the steps:
S100, it is provided that girder liner；
S200, the outer surface at described girder liner smears one layer of adhesive coating；
S300, the outer surface at adhesive coating spreads the carbon fiber prepreg covering 90 ° of angles and covers composite inner to obtain fiber lay down；
S400, fiber lay down cover the outer surface paving of composite inner cover ± carbon fiber prepreg at 60 ° of angles and ± 30 ° of angles obtains fiber lay down and covers composite intermediate layer；
S500, covers the outer surface paving in composite intermediate layer in fiber lay down and covers the carbon fiber prepreg at 0 ° of angle and obtain fiber lay down and cover composite outer layer；
S600, covers the outer surface paving of composite outer layer in fiber lay down and covers the glass fibre prepreg at 90 ° of angles and obtain glass fabric external protection coating；
S700, is heated solidifying by the girder that paving has been covered.
Below in conjunction with several specific embodiments, the manufacture method of the box type girder of the bridge crane of the present invention is described in detail.
Embodiment 1
The preparation method of present embodiment adopts following steps:
Step one, on rustless steel girder liner outer surface, smear the epoxy resin adhesive coating of thin layer；
Step 2, outside adhesive coating, paving is covered the T700 carbon cloth prepreg of 12k at 90 ° of angles and is obtained fiber lay down and cover composite inner；
Step 3, fiber lay down cover composite inner outer surface spread successively cover ± the T700 carbon cloth prepreg of the 12k at 60 ° of angles and ± 30 ° of angles obtains fiber lay down and covers composite intermediate layer；
Step 4, cover composite intermediate layer outer surface paving in fiber lay down and cover the T700 carbon cloth prepreg of 12k at 0 ° of angle and obtain fiber lay down and cover composite outer layer；
Step 5, cover, in fiber lay down, the glass fabric prepreg of 12k that composite outer layer outer surface paving covers 90 ° of angles and obtain glass fabric external protection coating；
The box type girder that step 6, Jiang Pu have covered is heated solidifying, and with 3 DEG C/min heating rate, is warming up to 80 DEG C, is incubated 2h；Again with 3 DEG C/min heating rate, it is warming up to 120 DEG C, is incubated 2h；It is warming up to 150 DEG C with same heating rate, is incubated 1h；Finally naturally cool to room temperature.
Compared with steel girder, girder length and under lifting weight same case, the result of the test of bridge crane carbon fibre composite box type girder is listed in table 1.
Embodiment 2
The preparation method of present embodiment adopts following steps:
Step one, on rustless steel girder liner outer surface, smear the phenolic resin binder coating of thin layer；
Step 2, outside adhesive coating, paving is covered the T700 carbon cloth prepreg of 12k at 90 ° of angles and is obtained fiber lay down and cover composite inner；
Step 3, fiber lay down cover composite inner outer surface spread successively cover ± the T700 carbon cloth prepreg of the 12k at 60 ° of angles and ± 30 ° of angles obtains fiber lay down and covers composite intermediate layer；
Step 4, cover composite intermediate layer outer surface paving in fiber lay down and cover the T700 carbon cloth prepreg of 12k at 0 ° of angle and obtain fiber lay down and cover composite outer layer；
Step 5, cover, in fiber lay down, the glass fabric prepreg of 12k that composite outer layer outer surface paving covers 90 ° of angles and obtain glass fabric external protection coating；
The box type girder that step 6, Jiang Pu have covered is heated solidifying, and with 3 DEG C/min heating rate, is warming up to 90 DEG C, is incubated 2h；Again with 3 DEG C/min heating rate, it is warming up to 120 DEG C, is incubated 2h；It is warming up to 150 DEG C with same heating rate, is incubated 1h；Finally naturally cool to room temperature.
Compared with steel girder, girder length and under lifting weight same case, the maximum weight of lifting improves about 55%, and the weight of girder is about the 50～70% of same gauge steel material girder weight.
Compared with steel girder, girder length and under lifting weight same case, the result of the test of bridge crane carbon fibre composite box type girder is listed in table 1.
Embodiment 3
The preparation method of present embodiment adopts following steps:
Step one, on rustless steel girder liner outer surface, smear the polyurethane resin adhesive coating of thin layer；
Step 2, outside adhesive coating, paving is covered the T700 carbon cloth prepreg of 12k at 90 ° of angles and is obtained fiber lay down and cover composite inner；
Step 3, fiber lay down cover composite inner outer surface spread successively cover ± the T700 carbon cloth prepreg of the 12k at 60 ° of angles and ± 30 ° of angles obtains fiber lay down and covers composite intermediate layer；
Step 4, cover composite intermediate layer outer surface paving in fiber lay down and cover the T700 carbon cloth prepreg of 12k at 0 ° of angle and obtain fiber lay down and cover composite outer layer；
Step 5, cover, in fiber lay down, the glass fabric prepreg of 12k that composite outer layer outer surface paving covers 90 ° of angles and obtain glass fabric external protection coating；
The box type girder that step 6, Jiang Pu have covered is heated solidifying, and with 3 DEG C/min heating rate, is warming up to 100 DEG C, is incubated 2h；Again with 3 DEG C/min heating rate, it is warming up to 150 DEG C, is incubated 2h；It is warming up to 180 DEG C with same heating rate, is incubated 1h；Finally naturally cool to room temperature.
Compared with steel girder, girder length and under lifting weight same case, the result of the test of bridge crane carbon fibre composite box type girder is listed in table 1.
Embodiment 4
The preparation method of present embodiment adopts following steps:
Step one, on rustless steel girder liner outer surface, smear the epoxy resin adhesive coating of thin layer；
Step 2, cover the T800 carbon cloth prepreg of 12k at 90 ° of angles adhesive coating outer surface paving and obtain fiber lay down and cover composite inner；
Step 3, fiber lay down cover composite inner outer surface spread successively cover ± the T800 carbon cloth prepreg of the 12k at 60 ° of angles and ± 30 ° of angles obtains fiber lay down and covers composite intermediate layer；
Step 4, cover composite intermediate layer outer surface paving in fiber lay down and cover the T800 carbon cloth prepreg of 12k at 0 ° of angle and obtain fiber lay down and cover composite outer layer；
Step 5, cover, in fiber lay down, the glass fabric prepreg of 12k that composite outer layer outer surface paving covers 90 ° of angles and obtain glass fabric external protection coating；
The box type girder that step 6, Jiang Pu have covered is heated solidifying, and with 3 DEG C/min heating rate, is warming up to 80 DEG C, is incubated 2h；Again with 3 DEG C/min heating rate, it is warming up to 120 DEG C, is incubated 2h；It is warming up to 150 DEG C with same heating rate, is incubated 1h；Finally naturally cool to room temperature.
Compared with steel girder, girder length and under lifting weight same case, the result of the test of bridge crane carbon fibre composite box type girder is listed in table 1.
Embodiment 5
The preparation method of present embodiment adopts following steps:
Step one, on rustless steel girder liner outer surface, smear the phenolic resin binder coating of thin layer；
Step 2, cover the T800 carbon cloth prepreg of 12k at 90 ° of angles adhesive coating outer surface paving and obtain fiber lay down and cover composite inner；
Step 3, fiber lay down cover composite inner outer surface spread successively cover ± the T800 carbon cloth prepreg of the 12k at 60 ° of angles and ± 30 ° of angles obtains fiber lay down and covers composite intermediate layer；
Step 4, cover composite intermediate layer outer surface paving in fiber lay down and cover the T800 carbon cloth prepreg of 12k at 0 ° of angle and obtain fiber lay down and cover composite outer layer；
Step 5, cover, in fiber lay down, the glass fabric prepreg of 12k that composite outer layer outer surface paving covers 90 ° of angles and obtain glass fabric external protection coating；
The box type girder that step 6, Jiang Pu have covered is heated solidifying, and with 3 DEG C/min heating rate, is warming up to 90 DEG C, is incubated 2h；Again with 3 DEG C/min heating rate, it is warming up to 120 DEG C, is incubated 2h；It is warming up to 150 DEG C with same heating rate, is incubated 1h；Finally naturally cool to room temperature.
Compared with steel girder, girder length and under lifting weight same case, the result of the test of bridge crane carbon fibre composite box type girder is listed in table 1.
Embodiment 6
The preparation method of present embodiment adopts following steps:
Step one, on rustless steel girder liner outer surface, smear the polyurethane resin adhesive coating of thin layer；
Step 2, cover the T800 carbon cloth prepreg of 12k at 90 ° of angles adhesive coating outer surface paving and obtain fiber lay down and cover composite inner；
Step 3, fiber lay down cover composite inner outer surface spread successively cover ± the T800 carbon cloth prepreg of the 12k at 60 ° of angles and ± 30 ° of angles obtains fiber lay down and covers composite intermediate layer；
Step 4, cover composite intermediate layer outer surface paving in fiber lay down and cover the T800 carbon cloth prepreg of 12k at 0 ° of angle and obtain fiber lay down and cover composite outer layer；
Step 5, cover, in fiber lay down, the glass fabric prepreg of 12k that composite outer layer outer surface paving covers 90 ° of angles and obtain glass fabric external protection coating；
The box type girder that step 6, Jiang Pu have covered is heated solidifying, and with 3 DEG C/min heating rate, is warming up to 100 DEG C, is incubated 2h；Again with 3 DEG C/min heating rate, it is warming up to 150 DEG C, is incubated 2h；It is warming up to 180 DEG C with same heating rate, is incubated 1h；Finally naturally cool to room temperature.
Compared with steel girder, girder length and under lifting weight same case, the result of the test of bridge crane carbon fibre composite box type girder is listed in table 1.
Embodiment 7
Covering composite layer due to fiber lay down adopts the carbon fiber Resisting fractre strain of single model and impact property relatively low, thus affecting service life and the security performance of girder, the present embodiment adopt the paving that the T700 carbon cloth prepreg of the 12K of different model and the T800 carbon cloth prepreg of 12K carry out fibrous material layer cover, being embodied as, the preparation method of present embodiment adopts following steps:
Step one, on rustless steel girder liner outer surface, smear the epoxy resin adhesive coating of thin layer；
Step 2, outside adhesive coating, paving is covered the T700 carbon cloth prepreg of 12k at 90 ° of angles and is obtained fiber lay down and cover composite inner；
Step 3, fiber lay down cover composite inner outer surface spread successively cover ± the T800 carbon cloth prepreg of the 12k at 60 ° of angles and ± 30 ° of angles obtains fiber lay down and covers composite intermediate layer；
Step 4, cover composite intermediate layer outer surface paving in fiber lay down and cover the T700 carbon cloth prepreg of 12k at 0 ° of angle and obtain fiber lay down and cover composite outer layer；
Step 5, cover, in fiber lay down, the glass fabric prepreg of 12k that composite outer layer outer surface paving covers 90 ° of angles and obtain glass fabric external protection coating；
The box type girder that step 6, Jiang Pu have covered is heated solidifying, and with 3 DEG C/min heating rate, is warming up to 80 DEG C, is incubated 2h；Again with 3 DEG C/min heating rate, it is warming up to 120 DEG C, is incubated 2h；It is warming up to 150 DEG C with same heating rate, is incubated 1h；Finally naturally cool to room temperature.
Compared with steel girder, girder length and under lifting weight same case, the result of the test of bridge crane carbon fibre composite box type girder is listed in table 1.
Embodiment 8
Covering composite layer due to fiber lay down adopts the carbon fiber Resisting fractre strain of single model and impact property relatively low, thus affecting service life and the security performance of girder, the present embodiment adopt the paving that the T700 carbon cloth prepreg of the 12K of different model and the T800 carbon cloth prepreg of 12K carry out fibrous material layer cover.Being embodied as, the preparation method of present embodiment adopts following steps:
Step one, on rustless steel girder liner outer surface, smear the phenolic resin binder coating of thin layer；
Step 2, outside adhesive coating, paving is covered the T700 carbon cloth prepreg of 12k at 90 ° of angles and is obtained fiber lay down and cover composite inner；
Step 3, fiber lay down cover composite inner outer surface spread successively cover ± the T800 carbon cloth prepreg of the 12k at 60 ° of angles and ± 30 ° of angles obtains fiber lay down and covers composite intermediate layer；
Step 4, cover composite intermediate layer outer surface paving in fiber lay down and cover the T700 carbon cloth prepreg of 12k at 0 ° of angle and obtain fiber lay down and cover composite outer layer；
Step 5, cover, in fiber lay down, the glass fabric prepreg of 12k that composite outer layer outer surface paving covers 90 ° of angles and obtain glass fabric external protection coating；
The box type girder that step 6, Jiang Pu have covered is heated solidifying, and with 3 DEG C/min heating rate, is warming up to 90 DEG C, is incubated 2h；Again with 3 DEG C/min heating rate, it is warming up to 120 DEG C, is incubated 2h；It is warming up to 150 DEG C with same heating rate, is incubated 1h；Finally naturally cool to room temperature.
Compared with steel girder, girder length and under lifting weight same case, the result of the test of bridge crane carbon fibre composite box type girder is listed in table 1.
Embodiment 9
Covering composite layer due to fiber lay down adopts the carbon fiber Resisting fractre strain of single model and impact property relatively low, thus affecting service life and the security performance of girder, the present invention adopt the paving that the T700 carbon cloth prepreg of the 12K of different model and the T800 carbon cloth prepreg of 12K carry out fibrous material layer cover.Being embodied as, the preparation method of present embodiment adopts following steps:
Step one, on rustless steel girder liner outer surface, smear the phenolic resin binder coating of thin layer；
Step 2, outside adhesive coating, paving is covered the T700 carbon cloth prepreg of 12k at 90 ° of angles and is obtained fiber lay down and cover composite inner；
Step 3, fiber lay down cover composite inner outer surface spread successively cover ± the T800 carbon cloth prepreg of the 12k at 60 ° of angles and ± 30 ° of angles obtains fiber lay down and covers composite intermediate layer；
Step 4, cover composite intermediate layer outer surface paving in fiber lay down and cover the T700 carbon cloth prepreg of 12k at 0 ° of angle and obtain fiber lay down and cover composite outer layer；
Step 5, cover, in fiber lay down, the glass fabric prepreg of 12k that composite outer layer outer surface paving covers 90 ° of angles and obtain glass fabric external protection coating；
The box type girder that step 6, Jiang Pu have covered is heated solidifying, and with 3 DEG C/min heating rate, is warming up to 100 DEG C, is incubated 2h；Again with 3 DEG C/min heating rate, it is warming up to 150 DEG C, is incubated 2h；It is warming up to 180 DEG C with same heating rate, is incubated 1h；Finally naturally cool to room temperature.
Compared with steel girder, girder length and under lifting weight same case, the result of the test of bridge crane carbon fibre composite box type girder is listed in table 1.
The table Bridge 1 formula crane result of the test of carbon fibre composite box type girder
Certainly; the present invention also can have other various embodiments; when without departing substantially from present invention spirit and essence thereof; those of ordinary skill in the art are when can make various corresponding change and deformation according to the present invention, but these change accordingly and deformation all should belong to the scope of the claims appended by the present invention.
Claims (12)
1. the box type girder of a bridge crane, it is characterized in that, described box type girder is mainly made up of carbon fibre composite, and described box type girder is followed successively by inner liner from inside to outside, adhesive coating, fiber lay down covers composite inner, and fiber lay down covers composite intermediate layer, fiber lay down covers composite outer layer and glass fabric external protection coating.
2. the box type girder of bridge crane according to claim 1, it is characterised in that described inner liner adopts stainless steel.
3. the box type girder of bridge crane according to claim 1, it is characterised in that the material of described adhesive coating adopts epoxy resin, phenolic resin or polyurethane resin.
4. the box type girder of bridge crane according to claim 1, it is characterized in that, described fiber lay down covers composite inner, and described fiber lay down covers composite intermediate layer, described fiber lay down covers composite outer layer and the material of described glass fabric external protection coating all adopts carbon fiber prepreg.
5. the box type girder of bridge crane according to claim 4, it is characterised in that described fiber lay down covers the carbon fiber prepreg that composite inner adopts the T700 of 12K.
6. the box type girder of bridge crane according to claim 4, it is characterised in that described fiber lay down covers the carbon fiber prepreg of the T700 of composite intermediate layer employing 12K or the carbon fiber prepreg of the T800 of 12K.
7. the box type girder of bridge crane according to claim 4, it is characterised in that described fiber lay down covers the carbon fiber prepreg that composite outer layer adopts the T700 of 12K.
8. the box type girder of bridge crane according to claim 4, it is characterised in that described glass fabric external protection coating adopts the glass fibre prepreg of 12K.
9. the box type girder of the bridge crane according to any one in claim 1-8, it is characterized in that, described fiber lay down covers composite inner, and described fiber lay down covers composite intermediate layer, described fiber lay down covers composite outer layer and the gross thickness of described glass fabric external protection coating is 3～12mm.
10. the manufacture method of the box type girder of bridge crane described in any one in a claim 1-9, it is characterised in that comprise the steps:
Girder liner is provided；
Outer surface at described girder liner smears one layer of adhesive coating；
Outer surface at adhesive coating spreads the carbon fiber prepreg covering 90 ° of angles and covers composite inner to obtain fiber lay down；
Fiber lay down cover the outer surface paving of composite inner cover ± carbon fiber prepreg at 60 ° of angles and ± 30 ° of angles obtains fiber lay down and covers composite intermediate layer；
Cover the outer surface paving in composite intermediate layer in fiber lay down to cover the carbon fiber prepreg at 0 ° of angle and obtain fiber lay down and cover composite outer layer；
Cover the outer surface paving of composite outer layer in fiber lay down to cover the glass fibre prepreg at 90 ° of angles and obtain glass fabric external protection coating；
It is heated solidifying by the girder that paving has been covered.
11. the manufacture method of the box type girder of bridge crane according to claim 10, it is characterised in that in described heat-curing step, solidification temperature ranges for 80～180 DEG C, heating rate is 3～8 DEG C/min, and adopts the mode of gradient solidification, finally naturally cools to room temperature.
12. the manufacture method of the box type girder of bridge crane according to claim 10, it is characterized in that, described fiber lay down covers composite inner, and described fiber lay down covers composite intermediate layer, described fiber lay down covers composite outer layer and the carbon fiber prepreg of the described glass fabric external protection coating same model of employing or different model.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202401393U (en) * | 2011-12-21 | 2012-08-29 | 中国人民解放军63983部队 | Composite bridge floor |
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| CN203511771U (en) * | 2013-09-29 | 2014-04-02 | 江西创元汽车零部件有限公司 | Light automobile chassis |
| CN103758037A (en) * | 2014-02-13 | 2014-04-30 | 中格复合材料（南通）有限公司 | Bridge deck |
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| CN1310654A (en) * | 1998-06-18 | 2001-08-29 | C－动力股份公司 | Tool holder |
| CN1300898A (en) * | 2001-02-13 | 2001-06-27 | 李永柱 | Externally coated steel based concrete member and its making method |
| CN103282195A (en) * | 2010-12-28 | 2013-09-04 | 氰特科技股份有限公司 | Multilayer and composition gradient structures with improved damping properties |
| CN102689841A (en) * | 2011-03-22 | 2012-09-26 | 大连大起产业开发有限公司 | Electric hoist portal crane |
| CN202401393U (en) * | 2011-12-21 | 2012-08-29 | 中国人民解放军63983部队 | Composite bridge floor |
| CN103015317A (en) * | 2012-12-27 | 2013-04-03 | 南京工业大学 | Factory-made orthotropic steel plate and composite combined deck structure |
| CN203511771U (en) * | 2013-09-29 | 2014-04-02 | 江西创元汽车零部件有限公司 | Light automobile chassis |
| CN103758037A (en) * | 2014-02-13 | 2014-04-30 | 中格复合材料（南通）有限公司 | Bridge deck |
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