CN101848779A - The casting method of truck side frame, casting pattern, rail truck bogie side frame, rail truck and railcar - Google Patents
The casting method of truck side frame, casting pattern, rail truck bogie side frame, rail truck and railcar Download PDFInfo
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- CN101848779A CN101848779A CN200880105151A CN200880105151A CN101848779A CN 101848779 A CN101848779 A CN 101848779A CN 200880105151 A CN200880105151 A CN 200880105151A CN 200880105151 A CN200880105151 A CN 200880105151A CN 101848779 A CN101848779 A CN 101848779A
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- side frame
- core
- bogie side
- casting
- frame part
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
- B22C9/108—Installation of cores
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D25/00—Special casting characterised by the nature of the product
- B22D25/02—Special casting characterised by the nature of the product by its peculiarity of shape; of works of art
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
- B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
- B61F5/50—Other details
- B61F5/52—Bogie frames
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- Molds, Cores, And Manufacturing Methods Thereof (AREA)
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Abstract
The present invention relates to a kind of casting method that is used for the railway bogie bogie side frame, it comprised as the next stage: (i) modeling; (ii) mfg. moulding die; (iii) make core; (iv) core is placed in the mould; (v) pour into a mould founding materials; (vii) finishing.The base of truck side frame and the core of middle body in the method, have been eliminated.The invention still further relates to a kind of casting pattern (1), it comprises first bogie side frame part (10), and this bogie side frame part (10) is connected on second bogie side frame part (12) by middle body (11).Bogie side frame part (10 and 12) has base (30), corresponding space (18) is arranged in their free end, and middle body (11) has central space (21).In casting pattern of the present invention (1), eliminate the die cavity that is positioned in base space (18) and the central space (21) and formed element, thereby in casting method, do not needed central core and base core.The core that shell (23) has been avoided braking guider (9) is placed in the mould.At last, the invention describes a kind of rail truck bogie side frame, be primarily characterized in that, its casting method according to the present invention is produced.
Description
Technical field
The present invention relates to a kind of casting pattern that is used for the casting method of railway bogie (truck) bogie side frame and is used for aforementioned casting method.Compare with existing method,, and design the die cavity formation element that is used for locating them in model, produced benefit by the core of elimination middle body and base.
Background technology
Rail truck is designed to support axle, wheel and the suspension in compartment, is absorbed in the impact that its active force that is taken place during the orbital motion causes.Typical bogie has the zone that directly contacts with the lower external face in compartment by central bolster, and each end of central bolster is shelved on the spring assembly.These spring assemblies are positioned in the part of the bogie that is called bogie side frame.This is one of them most important structural moiety, because it not only holds spring assembly or other flexible member, also holds compartment wheel the tip of the axis.
This bogie side frame is made of metal usually, and by the casting method manufacturing, although casting method has many variations on its stage, it comprises the well-known in the prior art following root phase.Therefore only need some commentaries substantially to get final product.In the time will describing these stages in the mode relevant with purpose of the present invention, these stages will further probe in the specific embodiment:
(i) make casting pattern;
In this stage, structure possesses the model of the roughly form of the cast components treated.Its design is used for predicting after the cast cast metal contraction of the material that the cooling owing to metal takes place.
(ii) mfg. moulding die;
After making casting pattern, model is placed in the mould container.Usually the high-temperature material of being made up of molding sand and caking thing (refractive material) is molded on the model, and it stays or opposite die cavity complementary with the form for the treatment of cast components after removing mould container.
(iii) make core;
Core is the device of being made by molding sand.They are designed to provide inner space, wall, die cavity, hole and entrance in the parts.
(iv) core is placed in the mould;
After making core, core should be placed on the mould, thereby, in final parts, produce die cavity by cast founding materials (next stage).
(v) pour into a mould founding materials;
In this, pour into a mould the normally founding materials of metal alloy, thereby fill the mould that comprises or do not comprise core.
(vi) remove mould
After the time cycle of determining that is used for the parts cooling and in mould, solidifies, can manually or by mechanical means remove this parts.
(vii) finishing
After from mould, removing parts, need remove any burr that during casting process, forms, and remove any crust of employed molding sand in mfg. moulding die.During this stage, can also carry out specific heat treatment to the metal ingredient of the parts that obtain by this method.
Usually, model is divided into two halves (two opening) forming two moulds, mould corresponding half, it is placed face-to-face.When they were linked together, they produced whole die cavity, and die cavity constitutes by parts are inserted in the mould container.By passage cast founding materials, passage is directed to founding materials in the mold cavity then, to fill and the production final part.
About being exclusively used in the casting method of rail truck bogie side frame, prior art has some example, for example patent documentation P19403781-7.This patent has been described the morphosis of truck side frame, the weight saving that geometry by more effectively utilizing parts and material cause the bogie side frame structure.The maximization of this structure is provided by the shape of giving whole bogie side frame structure, for example the solid shape of the whole lateral cross section of " I " word beam.The document has stated that also new " I " word girder construction allows more easy inspection, thereby and has improved the quality of mould owing to the use that has greatly reduced the core that is used to cast.
Although it is useful that the method described in the document looks like, the mould and the core that are used for obtaining truck side frame in manufacturing need thorough overhaul.This needs with high investment changing or to adapt to this method, thereby realizes the casting that proposed in the document.
In addition, because be used for the casting method of railway bogie bogie side frame at great majority, core is by simple attached being positioned on the mould, so can find countless defective and problem after the casting in parts.An example of these problems be when the die casting founding materials in the place of one or more cores displacements, for example when the molding sand of the core that breaks away from caking with founding materials comes in contact and the molding sand particle keeps being combined in the cast parts and formation burr when polluting it, perhaps cause defective.
At patent documentation US6, can find another example of prior art in 662,853, it has described a kind of by bogie side frame is divided into several sections, utilizes the core module to form the bogie side frame inner surface and constructs the method for rail truck bogie side frame.The core module is positioned at in the lower area: left end, right-hand member, left stretch-draw zone, right stretch-draw zone and middle section.
The document links together into core block with several cores, so for this scheme to be adopted, need carry out expensive change in the production phase of core once more, this can increase the cost of this method.
Therefore, still do not work out a kind of casting method as can be seen at present, and/or even casting pattern, it reduces the quantity of core effectively, and greatly do not change the structure in method or related stage, and do not need very large maintenance to be used for the standard of the casting method of railway bogie bogie side frame with change.In addition, do not have casting method and/or casting pattern that simplicity can not only be provided, and sizable improvement is being provided aspect the finishing of truck side frame, eliminate the used major part work of this stage.
Summary of the invention
Therefore, main purpose of the present invention provides a kind of casting method, it has reduced the quantity of core effectively, thereby with less defective, less burr, less inclusion, the finishing work that greatly reduces, improved dimensional stability, low core/metal molding sand is related and better appearance and obtain the railway bogie bogie side frame.
In addition, second purpose of the present invention is to produce a kind ofly to be used for the casting pattern that casting method is used, thereby the same advantage described in the earlier paragraphs is provided.
At last, the 3rd purpose of the present invention provides a kind of truck side frame that is used for railcar, and it has best surface finish, and is formed by the casting method manufacturing described in first purpose of the present invention.
First purpose of the present invention realizes that by the casting method of truck side frame it comprised with the next stage:
(i) modeling comprises to be substantially similar to the form structure casting pattern of truck side frame, shrinks with the material of prediction after the casting metal alloy;
(ii) mfg. moulding die comprises casting pattern is inserted in the mould container, and removes this casting pattern after filling molding sand and compacting from aforementioned mould container;
(iii) make the core of truck side frame, comprise the core of first and second bogie side frames part of making casting pattern; The core in first and second zones of the connection between first and second side frame members of casting pattern divide; And the core of the part of proximate base;
(iv) core is placed in the mould, comprises: the core of top and following middle body is positioned between the core of bogie side frame part, and makes the core location of proximate base (iii) middle following being positioned in the mould of core of making of stage;
(v) pour into a mould founding materials, comprise with founding materials and fill mould, this mould comprises the core that the stage placed in (iv).
(vi) remove mould, comprise and removing by (pouring into a mould the parts of cast, cooling and curing that founding materials obtained v) in the stage; With
(vii) finishing, comprise to the stage (i) to (the vi) surface treatment of the truck side frame that is obtained.
The method stage that also is included in is eliminated the feature of the core of the base of truck side frame and middle body in (iv).
Second purpose of the present invention realizes that by the casting pattern of the concise and to the point casting method of describing above a kind of the utilization this casting pattern comprises the first bogie side frame part, and it is connected on second bogie side frame part by middle body.
Bogie side frame partly be mutually symmetrical, parallel and diametrically opposite, each in them includes the supporting arm on the contiguous bolster that is connected elongation.Supporting arm tiltedly extends from the contact area between bogie side frame part and the middle body in the bolster direction updip of elongation.The bolster of elongation also extends and has free end from the contact area between bogie side frame part and the middle body, and it comprises first tooth of base.With the zone that is connected of bolster of elongation, supporting arm also comprise connect second tooth of base.This of base second tooth separates with respect to first between cog of base and is basically parallel to this first tooth.Space between first base arm and second base arm is filled with the base die cavity and forms element.
On the other hand, middle body comprises first Connection Element and second Connection Element, first Connection Element is associated with the bolster of abutment with the elongation of first and second bogie side frames part, and second Connection Element is associated with the supporting arm of abutment with first and second bogie side frames part.Be substantially parallel and isolated between first and second Connection Elements itself.Space between first and second Connection Elements is filled with central die cavity and forms element.
This casting pattern also comprises having the feature that die cavity forms element, and die cavity forms element and is used for core is contained in base and the middle body of being eliminated.
The 3rd purpose of the present invention realizes that by producing the rail truck bogie side frame this bogie side frame has the principal character of producing according to casting method of the present invention.
Description of drawings
To the present invention be described in more detail based on the example shown in the design now.Accompanying drawing is as follows:
Fig. 1 is a flow chart, and it has shown a plurality of stages of casting method of the present invention;
Fig. 2 is two half perspective views of opening casting pattern;
Fig. 3 A is the top view of first and second bogie side frames core partly of casting pattern;
Fig. 3 B is the top view of the core of first join domain between first and second side frame members of casting pattern divide;
Fig. 3 C is the top view that is positioned at the core of second join domain between first and second side frame members of casting pattern divide;
Fig. 3 D is the top view of the core of proximate base;
Fig. 3 E is the top view of the core of brakes guider;
Fig. 3 F is the top view of the auxiliary core of following rear region;
Fig. 4 is half a top view of casting mould; And
Fig. 5 is half a top view of core casting mould when in place.
The specific embodiment
1) casting method
At first, be important to note that casting method of the present invention comprises the stage identical with art methods, it is favourable as will proving.This is just can not obtain the benefit brought by method of the present invention because do not need to change the principal character of method.
Shown the following method stage among Fig. 1.
(i) modeling
This stage comprises with a kind of form makes casting pattern 1, and this form defines the form of truck side frame, shrinks with the material after the prediction cast molten alloy.This casting pattern can be made by any material, for example timber, polymer or preferably metal, or the combination of these materials.What be worth emphasizing is, casting pattern 1 all is slightly larger than the size of truck side frame when carrying out finishing owing to the metal contracts of filling mould has under its any possible form, and metal filled supply heat also forms this parts.
Casting pattern of the present invention 1 two opening is made up of two half modules, respectively corresponding to half of truck side frame.Yet this fact does not limit protection scope of the present invention.
As shown in Figure 2, casting pattern 1 of the present invention consists essentially of the first bogie side frame part 10, and it is connected on the second bogie side frame part 12 by middle body 11.These bogie side frame parts 10 and 12 be mutually symmetrical, parallel and diametrically opposite.Middle body comprises again: first Connection Element 19, and it is associated with the first bogie side frame part 10 and the second bogie side frame part 12 with abutment; And second Connection Element 20, it is associated with the first bogie side frame part 10 and the second bogie side frame part 12 with abutment.Between first Connection Element 19 and second Connection Element 20 itself is substantially parallel and isolated.Each bogie side frame part 10 and 12 is made up of littler parts, and it will be described below.
In addition, casting pattern 1 of the present invention comprises base 30 in the end of the first bogie side frame part 10 and the second bogie side frame part 12, and this base 30 has the function of protecting truck side frame wheel shaft end after casting process finishes.
Hereinafter casting pattern 1 will be described in more detail, because do not relate to the further information with its structurally associated herein.
(ii) mfg. moulding die
After making casting pattern 1, need mfg. moulding die 2, founding materials will be poured in this mould 2.
Basically, this stage of method comprises to be utilized molded container location casting pattern 1 and removes aforementioned molded container, and wherein molding sand is positioned in the molded container.Molded container preferably makes its upper part and lower part open wide or empty.
In this stage, because model 1 two opening so each half module of casting pattern 1 preferably is placed on plate or the flat surfaces, then is positioned at molded container on these plates that comprise model.Next, fill molded container, fill the half module that it also covers casting pattern 1 fully with molding sand.In addition, molding sand carried out compressing program, make most of refractory material and casting pattern 1 half module as far as possible near-earth form and contact, thereby and make the whole volume of molding sand filling molded container, until by the formed limit of its bogie side frame apparent height.
After filling, remove each container from the plate that comprises model with molding sand.Like this, after removing the half module of casting pattern 1, when aforementioned container is placed one on the other, obtain the die cavity of or opposite form complementary with the form of model 1 from container.
Usually molded container is a horizontal positioned, and die cavity the first half form lower part, be named as the bottom, and the second half be positioned on the first half, form upper part, be named as the top.In addition, make passage in these moulds 2, by its pourable liquid founding materials, this depends on geometry, operating temperature and the employed alloy of the parts of its application.
Though preferred reflection the of the present invention a kind ofly has the two of two mould containers and opens casting pattern 1, should not get rid of other possibility, and this is not the limiting factor at protection domain of the present invention.
(iii) make core
This stage can occur in before the casting process or be parallel with it.These two kinds of possibilities do not limit protection scope of the present invention.
Core is the element of being made and being produced in the core container by special molding sand usually, and its function is to fill the mould hollow interior space.They will produce after casting finishes and treat the die cavity that cast components will have, and these parts are truck side frame in this example.
In casting method of the present invention, shown the core of preferred use among Fig. 3 A to 3D.In Fig. 3 A, shown the core of the first bogie side frame part 4 and the second bogie side frame part 5, and as can be seen, these cores have and the basic similarly form of the form of truck side frame part.Fig. 3 B has shown at the first bogie side frame part 10 of casting pattern 1 and the core 6 of first join domain 19 between the second bogie side frame part 12.Fig. 3 C shown the first bogie side frame part 10 of casting pattern 1 and the core 7,7 of second join domain 20 between the second bogie side frame part 12 '.Be important to note that the core 7,7 of second join domain 20 ' above being positioned at, because they are placed on (next stage of the method) in the casting mould 2 in this way.Fig. 3 D has shown the core of proximate base 8.
Also made the auxiliary core as shown in Fig. 3 F and the core of the brakes guider 9 as Fig. 3 E as shown in following rear region 40, they are responsible for the die cavity that generation can be held bogie brakes (brake shoe guider) parts when being ready to bogie side frame.
The form of the core shown in the last figure is not the factor that influences protection domain of the present invention.It should be noted that only importantly above-mentioned core is the core that exists all the time in the production process of truck side frame.In addition, except these, also can provide other core, and not influence the notion of casting method of the present invention.The exception of adding core is limited to two kinds of specific core types (central authorities and proximate base), and it will be explained in the back.
The prior art casting method still needs to make and obviously uses at least three cores, speaks by the book that those have larger sized core, and they are: at least one core that is used for the middle body of casting pattern 1; At least one base core with each base that is used for casting pattern 1.Present some shortcoming when adopting these cores in casting method, one of them shortcoming is that they are extremely huge cores, and makes the unusual costliness of production of these elements owing to be used for obtaining the quantity of the special molding sand of these elements.In addition, molding sand is not easy to dispose in environment, and this material of use is disadvantageous in the production of huge core, and causes environmental problem.
Compare with method of the present invention, in order to provide the example of molding sand discarded object in the art methods, the weight of the core that citation is eliminated is worth.In the bogie side frame that industry is made, central core has the average weight of 125Kg, and two base cores respectively have the average weight of 25Kg.In other words, the core sand that in casting method of the present invention, does not need about 175Kg.
Therefore,, and consider that each compartment uses two bogies if consider for example about 1,000 railcars of the annual production of foundary industry, and two bogie side frames of each bogie use, we just have so:
1,000 compartment＞2,000 bogies＞4,000 bogie side frames,
In other words, about 4,000 bogie side frames of annual production.Therefore, if save the 175Kg molding sand for each truck side frame, eliminate them so and will save about 700,000Kg (700,000 kilograms) or 700t (700 tons) molding sand (175x4,000=700,000), it has obviously confirmed one of them advantage of some advantages that casting method of the present invention is compared with prior art.In fact this is to make the needed labour of aforementioned core and reduce the needed memory block of core and realize by reducing the weight of core sand, reducing.
(stage will be explained other shortcoming that these cores produce in v) in cast stage of founding materials.This will strengthen why casting method of the present invention is by eliminating the reason that these cores have numerous advantages.
(iv) core is placed in the mould
After mfg. moulding die 2 and making necessary core, proceed to as the casting method of the object of the invention core is placed into stage in the mould 2 so that after in truck side frame, forming empty space.In other words, this is that core is positioned on the point of mould 2, has formed empty space or hollow area at these some places.
Fig. 5 has shown the mould 2 when main core is in place.Notice that in the figure the core of the first bogie side frame part 4 of casting pattern 1 and the core of the second bogie side frame part 5 are positioned at respectively on the part with the first bogie side frame part 10 of casting pattern 1 and the second bogie side frame part, 12 corresponding moulds 2.Be further noted that the first bogie side frame part 10 of casting pattern 1 and first join domain 6 between the second bogie side frame part 12 and second join domain 7,7 ' core be positioned at respectively on the part with first Connection Element 19 of casting pattern 1 and second Connection Element, 20 corresponding moulds 2.In addition, extra connection core 7 " be positioned at other core 7,7 ' on, other core 7,7 ' be placed between the core 4 and 5 of the first bogie side frame part 10 and the second bogie side frame part 12.The core 8 of proximate base is positioned in the part of mould 2, second tooth 17 of this part and the base that is named as casting pattern 1 of the present invention regional corresponding.
On the other hand, the core of brakes guider 9 directly is placed in the shell 23 on casting pattern 1.When removing model from mould, these cores 9 have been the integral parts of mould, and need not be follow-up fastening, thereby avoided arrangement, change in size, burr and the following problem of processing again.In addition, because the core of brakes 9 is not to be positioned in the mould in the stage identical with placing other core, so can consider from casting method of the present invention, to eliminate the core of brakes 9.
About core location, in the prior art casting method, the core of middle body be placed between core 4 and 5 and connect core 6 and 7,7 ' between.Each base core is placed between the core 4 and 5 end of the core 8 of pony sill and bogie side frame part.Connect core 6 and 7,7 ' be positioned at, and be positioned between the core of bogie side frame part 4 and 5 with the core of middle body.
Yet, in casting method, use these cores can cause a series of shortcomings and sizable problem, because install they are not fastened on the mould 2.These cores are placed with it are remained positioned in on its zone of designing, only supported each other, this can produce the gap between them, and in cast stage of founding materials (stage causes sizable shortcoming (burr that causes owing to excessive founding materials, or owing to lacking the hole that founding materials causes) during v).
(v) pour into a mould founding materials
This stage comprises uses founding materials, is preferably metal alloy and fills the core that mould 2 and stage placed in (iv).Material pours into by access road under its liquid state, arrives mould 2 until it, and material advances to the exit by cooling/respiration channel after filling mould 2, make the pressure of founding materials reach balance at the entrance and exit place of mould.
Yet in this stage, art methods is owing to the core of base and middle body is that shortcoming appears in the part of this method.More particularly, consider that these cores are not only very heavy, and be that loosely is placed on above the mould,, leave their position, or even fill gap between them so the founding materials that moves around their can impel them to move.
If mould moves from its normal position during the cast founding materials, the result after material cooled is the defective appearance that is called as flaw so, and it is made up of the scrambling between the geometry of bogie side frame half module volume.Therefore, consider that the bogie side frame half module must be symmetrical after the metal cooling, so problem of visual appearance not only, even and it is relevant with the geometry of truck side frame functional and also can not get proofreading and correct after the finishing stage such as the phenomenon of flaw etc., this may cause truck side frame to be scrapped.
Under the situation that metal flows between by the formed gap of the distance between the core, owing to newly exist a large amount of burrs to need the arduous finishing stage in the bogie side frame of casting.For fear of this problem, method of the present invention has been eliminated the core of central authorities and base from its stage, because as seeing, their existence brings a series of shortcomings can for this method.
In addition, the displacement of these cores also causes a series of dimensional problem, owing to it is failed to meet the processing again of the size stipulated in the design and tolerance needs product or even scraps.
In addition, about art methods, can produce the risk of same big non-metallic inclusion with a large amount of core casting truck side frames.Because the molding sand of core mixes mutually with the founding materials in pouring into mould 2, has increased the possibility that core suffers erosion.These field trashes may cause the weakening of parts, and may cause the fracture in one of them truck side frame easilier under high mechanical stress.
On the other hand, under the situation of the core that does not use base and middle body, casting method of the present invention has the advantage of producing truck side frame with following advantage:
1) greatly reduced flaw because having reduced the overall quantity of core, thereby meaned and reduced the possibility that breaks down;
2) greatly reduced burr quantity, because no longer exist founding materials to pour into possibility in the gap between central core and the base core, this possibility forms the part of art methods;
3) because reduced the quantity of core, perhaps reduced the source (core) that produces this error or rather, so reduced non-metallic inclusion.
4) because eliminated employed heavy core in the art methods in the method for the invention, so have the molding sand ratio of lower core/metal.
5) better appearance, because the core of base and middle body no longer with the core 6 and 7 of first and second join domains, 7 ' contact, thus do not exist founding materials to be poured into possibility between these cores, thereby reduced the quantity of burr and guaranteed the improvement of appearance; With
6), avoided the processing again of parts and scrapped owing to having eliminated the size condition that the caused variation of core has improved the casting bogie side frame.
7) do not need greatly to change casting pattern physical arrangement or even in known casting method, make big variation, from an economic point of view, it is very favourable producing truck side frame by the present invention.
(vi) remove mould
After founding materials has been filled mould, before can removing mould, need to wait for until material to cool down and solidify.
In this stage, from mould, remove the stage (the bogie side frame of casting by the cast founding materials v).Importantly the be careful removal of core sand is not so that stay any residue at the interior zone of cast component.
(vii) finishing
After from mould, removing parts, need to carry out the finishing stage, to eliminate any residual blemish that may exist.
One of them of these defectives is burr, and it is by the leakage of the founding materials that passes the cast passage, by breathing, producing by the crack that is positioned at the space between the core in the mould or enter in the mould by the alloy of pouring into a mould in many cases.In casting method of the present invention, compare greatly to have reduced with prior art and remove the time that deburring spent because central core and base core remove the incidence that has reduced burr significantly.Yet, remove deburring if desired, can on bogie side frame, carry out machinery or other burr removing method so.
Even without burr, on the bogie side frame of bogie, may still there be molding sand and some little physical deformations, they can manually or utilize sander, sand paper or utilize the blasting treatment technology to use steel brush to remove if desired.If desired parts are used special feature, can use other finely finishing method for example heat treatment and purification, so that in truck side frame, obtain the dimensional accuracy of height.
2) casting pattern
The present invention also provides casting pattern 1, and it is the basis that is used to eliminate core, eliminates core and occurs in the casting method of the present invention.
As can be seen from Fig. 2, mould 1 has the form similar to truck side frame, and comprises the first bogie side frame part 10, and this first bogie side frame part 10 is connected on the second bogie side frame part 12 by middle body 11.As setting forth, casting pattern 1 two opening of the present invention is although only shown one of them half module in Fig. 2.
About bogie side frame part 10 and 12, as seen these bogie side frames partly be mutually symmetrical, parallel and diametrically opposite.Each bogie side frame partly includes the supporting arm 13 on the bolster 14 that is connected elongation.Aforementioned supporting arm 13 extends obliquely from the contact area between one of them bogie side frame part 10,12 and the middle body 11 on the direction of the bolster 14 of elongation.The bolster 14 of each elongation extends from the contact area between one of them bogie side frame part 10,12 and the middle body 11, and extends on the direction of vertically pointing to casting pattern 1 outside.The bolster 14 of each elongation comprises first tooth 16 of base in its free end.Supporting arm 13 comprises second tooth 17 of the base that is connected again in it is connected to zone on the bolster 14 of elongation, this second tooth 17 is spaced apart and substantially parallel with respect to first tooth 16 of base, has base space 18 between them.
In the casting pattern 1 of prior art, first tooth 16 and the base space 18 between second tooth 17 that are positioned at base are filled by die cavity formation element, to hold base core (not shown), die cavity forms element as the term suggests produce die cavity at base area when making base 2.Therefore, because base area can not be filled this die cavity with the founding materials of cast, so casting pattern 1 expection of prior art will be placed the base core, thereby produce a kind of method, its final products (being truck side frame in this example) have a series of defectives.These die cavities that the present invention has eliminated the base of casting pattern 1 form element, have produced a kind of new casting pattern 1, and a kind of improved casting method, and its final products are compared with prior art has significant advantage.
About middle body 11, can be observed it and comprise: first Connection Element 19, it is connected with abutment on the bolster 14 of elongation of the first bogie side frame part 10 and the second bogie side frame part 12; And second Connection Element 20, it is connected on the supporting arm 13 of the first bogie side frame part 10 and the second bogie side frame part 12 with abutment.These Connection Elements 19 and 20 are parallel and isolated between himself, have produced central space 21 between they and bogie side frame part 10 and 12.
In addition, casting pattern 1 of the present invention comprises far-end 22, and this far-end 22 is given prominence to basically in model 1 outside.
Therefore, the problem of finding in order to remedy in the prior art, casting pattern 1 of the present invention has also been eliminated the formation element of central die cavity, makes to use central core in casting method.Therefore, this eliminates with removing base die cavity formation element and has removed the demand of using middle body core and base core in casting method.
In addition, adjacent central part 11 more particularly comprises the shell 23 of laying the core of brakes guider 9 as being designed to of having stated near the bogie side frame part 10 and 12 of second Connection Element 20.
In the casting pattern of prior art, in shell 23, have only a locator (not shown), it is used for making the core of brakes guider 9 be positioned at mould in the future.Already mentioned all inconvenience of following the existence that is positioned the core in the mould before this has produced.
3) truck side frame
The present invention also provides a kind of rail truck bogie side frame, is primarily characterized in that, this rail truck bogie side frame casting method according to the present invention is produced.
4) rail truck
The present invention also provides a kind of rail truck, is primarily characterized in that, this rail truck has two bogie side frames making according to casting method of the present invention.
5) railcar
At last, the invention provides a kind of railcar, be primarily characterized in that, it one of them truck side frame is made according to casting method of the present invention.
Though described an example of decision design, must understand that scope of the present invention has other possible variation, it only is subjected to the restriction of appended patent claims, and comprises all possible modification.
Claims (11)
1. the casting method of a truck side frame comprised with the next stage:
Stage (i): modeling comprises with a kind of form and makes casting pattern (1) that described form defines the form of truck side frame, has predicted the contraction of casting metal alloy material afterwards;
Stage is (ii): mfg. moulding die (2) comprises described casting pattern (1) is inserted in the casting container, and remove this casting pattern (1) from aforementioned molded container after filling described casting container with molding sand and compressing;
Stage is (iii): make the core of described truck side frame, comprise and make following core:
First bogie side frame part (4) of described casting pattern and the core of second bogie side frame part (5);
The core of middle body;
First bogie side frame part and first join domain (6) between second side frame member branch and the core of second join domain (7,7 ') at described casting pattern;
The core of pony sill (8);
The core of described base;
The core of brakes guider (9); With
Auxiliary core (40);
Stage is (iv): described core is placed in the described mould (2), comprise with the stage (iii) in the core of manufacturing be positioned on the described mould (2), and:
The core of described middle body is placed between the core of described bogie side frame part (4,5);
The core of described connection core (6,7,7 ') with described middle body put together, and be positioned between the core of described bogie side frame part (4,5);
Stage (v): pour into a mould described founding materials, comprise with described founding materials and fill the described mould (2) that comprises the described core that the stage places in (iv);
Stage (vi): remove described mould, be included in the stage (the parts of removing casting, cooling and solidifying after the described founding materials of cast v); With
Stage (vii): finishing, comprise by the stage (i) to (the vi) surface treatment of the described truck side frame that is obtained;
Described method is characterised in that, the stage (iv) in, eliminated the base of described truck side frame and the core of middle body.
2. method according to claim 1 is characterized in that, has eliminated that in the stage described core is placed in the described mould in (iv).
3. method according to claim 1 is characterized in that, has made braking guider core (9) in the stage in (iii).
4. method according to claim 1, it is characterized in that, the stage (iv) in, second join domain that is positioned between described first bogie side frame part (4) and described second bogie side frame part (5) holds extra connection core (7 "); (7 ") are positioned on other connection core of described second join domain (7,7 ') described connection core.
5. a kind of casting pattern (1) that uses in the casting method defined in claim 1 comprising:
First bogie side frame part (10), it is connected on second bogie side frame part (12) by middle body (11);
Two bogie side frame parts (10 and 12) are mutually symmetrical, parallel and diametrically opposite, and one of them side frame member branch comprises:
Supporting arm (13), its contiguous being connected on the bolster of elongation, described supporting arm (13) is extending obliquely from the contact area between described bogie side frame part (10 and 12) and the described middle body (11) on the direction of the bolster (14) of described elongation,
The bolster of aforementioned elongation (14) also extends from the contact area between described bogie side frame part (10 and 12) and the described middle body (11), and has free end, and described free end comprises first tooth (16) of described base,
With the join domain of the bolster (14) of described elongation in, described supporting arm (13) also comprises second tooth (17) that connects base, this of described base second tooth (17) is spaced apart and substantially parallel with respect to first tooth (16) of described base, thereby produces base space (18) between them
Described base space (18) forms element with the base die cavity and fills,
Described middle body (11) comprising:
First Connection Element (19), it is associated with the bolster of abutment with the elongation of described first bogie side frame part and described second bogie side frame part (10 and 12),
Second Connection Element (20), it is associated with the supporting arm (13) of abutment with described first bogie side frame part and described second bogie side frame part (10 and 12),
Described first Connection Element and described second Connection Element (19 and 20) are substantially parallel and isolated between itself, thereby produce central space (21) between them,
Described central space (21) forms element with central die cavity and fills,
Described casting pattern is characterised in that the die cavity of having eliminated described base and middle body forms element.
6. model according to claim 5 is characterized in that, described second Connection Element (20) comprises far-end (22), and described far-end (22) is given prominence to substantially in described model (1) outside.
7. model according to claim 5 is characterized in that, described model is two opening.
8. model according to claim 5 is characterized in that, described bogie side frame part (10 and 12) comprises the braking guide protrusions thing (23) that has inner die cavity of contiguous described middle body (11).
9. a rail truck bogie side frame is characterized in that, it obtains according to the method defined in claim 1 to 4.
10. a rail truck is characterized in that, it has the bogie side frame of making according to the method defined in claim 1 to 4.
11. a railcar is characterized in that, comprises the bogie side frame of making according to the method defined in claim 1 to 4 in its at least one bogie.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BRPI0702774-5 | 2007-06-20 | ||
| BRPI0702774-5A BRPI0702774B1 (en) | 2007-06-20 | 2007-06-20 | SIDE CASTING PROCESS OF A TRICK, CASTING MODEL, SIDE OF A RAILWAY WAGON TRICK, RAILWAY WAGON TRICK AND RAILWAY WAGON |
| PCT/BR2008/000049 WO2008154712A1 (en) | 2007-06-20 | 2008-02-22 | Casting process of a truck sideframe, casting model, railway car truck sideframe, railway car truck and railway car |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101848779A true CN101848779A (en) | 2010-09-29 |
| CN101848779B CN101848779B (en) | 2013-05-29 |
Family
ID=39533215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008801051516A Active CN101848779B (en) | 2007-06-20 | 2008-02-22 | Casting process of a truck sideframe, casting model, railway car truck sideframe, railway car truck and railway car |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN101848779B (en) |
| BR (1) | BRPI0702774B1 (en) |
| WO (1) | WO2008154712A1 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102489673A (en) * | 2011-12-01 | 2012-06-13 | 南车戚墅堰机车车辆工艺研究所有限公司 | Method for casting locomotive positioning arm castings |
| CN103097054A (en) * | 2011-05-17 | 2013-05-08 | 内维斯工业有限责任公司 | Side frame and bolster for a railway truck and method for manufacturing same |
| CN103097053A (en) * | 2011-05-17 | 2013-05-08 | 内维斯工业有限责任公司 | Side frame and bolster for a railway truck and method for manufacturing same |
| US9233416B2 (en) | 2011-05-17 | 2016-01-12 | Nevis Industries Llc | Side frame and bolster for a railway truck and method for manufacturing same |
| US10358151B2 (en) | 2013-12-30 | 2019-07-23 | Nevis Industries Llc | Railcar truck roller bearing adapter-pad systems |
| US10562547B2 (en) | 2013-12-30 | 2020-02-18 | Nevis Industries Llc | Railcar truck roller bearing adapter pad systems |
| CN111060335A (en) * | 2020-01-02 | 2020-04-24 | 中车青岛四方车辆研究所有限公司 | Test method and test system for driving wheel set connecting mechanism |
| US10752265B2 (en) | 2013-12-30 | 2020-08-25 | Nevis Industries Llc | Railcar truck roller bearing adapter pad systems |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120291977A1 (en) * | 2011-05-17 | 2012-11-22 | Erik Gotlund | Side frame and bolster for a railway truck and method for manufacturing same |
| US20120291976A1 (en) * | 2011-05-17 | 2012-11-22 | Erik Gotlund | Side frame and bolster for a railway truck and method for manufacturing same |
| US10569790B2 (en) | 2013-12-30 | 2020-02-25 | Nevis Industries Llc | Railcar truck roller bearing adapter-pad systems |
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| US5410968A (en) * | 1993-10-04 | 1995-05-02 | Amsted Industries Incorporated | Lightweight fatigue resistant railcar truck sideframe with tapering I-beam construction |
| US5481986A (en) * | 1994-11-09 | 1996-01-09 | Amsted Industries Incoporated | Lightweight truck sideframe |
| US5752564A (en) * | 1997-01-08 | 1998-05-19 | Amsted Industries Incorporated | Railway truck castings and method and cores for making castings |
| US6543367B1 (en) * | 2000-11-14 | 2003-04-08 | Buckeye Steel Castings Company | Lightweight truck sideframe |
| US6823800B2 (en) * | 2002-04-05 | 2004-11-30 | Thomas R. Berg | Spring seat for a railway truck sideframe and method of making the same |
| CN100581891C (en) * | 2003-05-05 | 2010-01-20 | 保罗·S·韦克 | Linear steering truck |
-
2007
- 2007-06-20 BR BRPI0702774-5A patent/BRPI0702774B1/en active IP Right Grant
-
2008
- 2008-02-22 WO PCT/BR2008/000049 patent/WO2008154712A1/en active Application Filing
- 2008-02-22 CN CN2008801051516A patent/CN101848779B/en active Active
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|---|---|---|---|---|
| US10350677B2 (en) | 2011-05-17 | 2019-07-16 | Nevis Industries Llc | Side frame and bolster for a railway truck and method for manufacturing same |
| US10112629B2 (en) | 2011-05-17 | 2018-10-30 | Nevis Industries Llc | Side frame and bolster for a railway truck and method for manufacturing same |
| CN103097053A (en) * | 2011-05-17 | 2013-05-08 | 内维斯工业有限责任公司 | Side frame and bolster for a railway truck and method for manufacturing same |
| US9346098B2 (en) | 2011-05-17 | 2016-05-24 | Nevis Industries Llc | Side frame and bolster for a railway truck and method for manufacturing same |
| US9216450B2 (en) | 2011-05-17 | 2015-12-22 | Nevis Industries Llc | Side frame and bolster for a railway truck and method for manufacturing same |
| US9233416B2 (en) | 2011-05-17 | 2016-01-12 | Nevis Industries Llc | Side frame and bolster for a railway truck and method for manufacturing same |
| CN103097054A (en) * | 2011-05-17 | 2013-05-08 | 内维斯工业有限责任公司 | Side frame and bolster for a railway truck and method for manufacturing same |
| CN107008855A (en) * | 2011-05-17 | 2017-08-04 | 内维斯工业有限责任公司 | The side frame and bolster and its manufacture method of rail vehicle bogie |
| CN102489673B (en) * | 2011-12-01 | 2013-10-23 | 南车戚墅堰机车车辆工艺研究所有限公司 | Method for casting locomotive positioning arm castings |
| CN102489673A (en) * | 2011-12-01 | 2012-06-13 | 南车戚墅堰机车车辆工艺研究所有限公司 | Method for casting locomotive positioning arm castings |
| US10358151B2 (en) | 2013-12-30 | 2019-07-23 | Nevis Industries Llc | Railcar truck roller bearing adapter-pad systems |
| US10562547B2 (en) | 2013-12-30 | 2020-02-18 | Nevis Industries Llc | Railcar truck roller bearing adapter pad systems |
| US10752265B2 (en) | 2013-12-30 | 2020-08-25 | Nevis Industries Llc | Railcar truck roller bearing adapter pad systems |
| CN111060335A (en) * | 2020-01-02 | 2020-04-24 | 中车青岛四方车辆研究所有限公司 | Test method and test system for driving wheel set connecting mechanism |
| CN111060335B (en) * | 2020-01-02 | 2021-07-02 | 中车青岛四方车辆研究所有限公司 | Test method and test system for driving wheel set connecting mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2008154712A1 (en) | 2008-12-24 |
| CN101848779B (en) | 2013-05-29 |
| BRPI0702774A2 (en) | 2009-02-10 |
| BRPI0702774B1 (en) | 2020-03-10 |
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