CN103706764A - Inner cavity sand core structure of brake valve of railway vehicle - Google Patents
Inner cavity sand core structure of brake valve of railway vehicle Download PDFInfo
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- CN103706764A CN103706764A CN201310691554.6A CN201310691554A CN103706764A CN 103706764 A CN103706764 A CN 103706764A CN 201310691554 A CN201310691554 A CN 201310691554A CN 103706764 A CN103706764 A CN 103706764A
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Abstract
The invention discloses an inner cavity sand core structure of a brake valve of a railway vehicle. The inner cavity sand core structure comprises six sand cores, wherein the first sand core, the second sand core, the fourth sand core, the fifth sand core and the sixth sand core are arranged around the third sand core, and the six sand cores form a whole by adopting a lock core technology. The inner cavity sand core structure has the advantages that the six sand cores are combined so as to form a whole, all inner cavities of a main valve body and casting gas channels are fully reflected, the improvement of assembly accuracy of the sand cores is facilitated, bonding parts of the sand cores are reduced, the number of defects such as flashes and burrs can be reduced, and the overlap joint or bonding parts of the sand cores are arranged on machining faces or parts easy to clean, so that even if the flashes and the burrs are generated, the flashes and the burrs can be removed through normal cleaning or machining of castings. A main valve body produced by adopting the structure has the advantages that an inner cavity is high in dimensional accuracy and uniform in wall thickness, the inner cavity and gas channels are bright and clean, the overlap joint dislocation is avoided, the defects such as casting flashes and burrs are reduced, and even if the flashes and the burrs are generated, the flashes and the burrs are easy to clean or are removed during the normal machining of products.
Description
Technical field
The invention belongs to rolling stock brake valve system technology for making field, particularly a kind of rolling stock brake valve intracoelomic cavity sand core structure.
Background technology
Main valve body is the key components and parts of rolling stock brake valve, and its quality good or not directly has influence on runnability and the safety of train.Main valve body inner chamber is complicated, and gas circuit and chamber are many, and wall thickness be take 7mm as main, belongs to thin wall foundry goods.In traditional processing technology, main valve body inner chamber is formed by multistage, multilayer, a plurality of fuse, fuse quantity is not from 7 to 14 etc., fuse section, interlayer joint not only usually produce the casting flaws such as dislocation, overlap, burr, scab because docking is bad, and the physical dimension of core cavity and casting wall thickness accuracy are reduced.In service for a long time at train after such product loading, impact because of factors such as vibrations, environment, its inner chamber " overlap, burr, scab " is understood progressively corrosion and is dropped, may stop up thus the air flue of this product or other parts that fray break down its performance, cause the consequences such as railway line interrupt run, bring larger society, economic loss to railway transportation cause.
Aborning, owing to being subject to the restriction of product structure, the above-mentioned mass defect that core cavity and gas circuit exist is not only difficult to aborning overcome, is difficult to find, and is difficult to remove.
Summary of the invention
The object of the invention is to: for the problem of above-mentioned existence, a kind of rolling stock brake valve intracoelomic cavity sand core structure is provided, the main valve body inner cavity size precision that adopts this structure to produce is high, wall thickness is even, inner chamber and gas circuit are bright and clean, without overlap joint dislocation, casting overlap, veining defect reduce, even if produce overlap, burr is also easy to cleaning or is removed when the normal machining of product.
Technical scheme of the present invention is achieved in that a kind of rolling stock brake valve intracoelomic cavity sand core structure, it is characterized in that: described inner chamber sand core structure is comprised of six cores, core and checking cylinder upstream cavity, checking cylinder downstream cavity and two-stage emergency valve partial shape coupling, No. two cores and auxiliary reservoir chamber and two-stage emergency valve another part form fit, No. three cores and brake pipe contact groove, service portion, auxiliary reservoir inflation contact groove, accelerate to alleviate aeration tank and, subtract contact groove form fit two innings, No. four core mates with acceleration graduated release valve cavity shape, No. five cores with accelerate graduated release valve portion, office subtracts valve portion and alleviates gas circuit hole coupling, No. six cores are with braking tube chambers and accelerate graduated release valve portion form fit, described No. three core collection main valve body installed surfaces, capping on main valve body, under main valve body, before capping and main valve body, capping is integrated, described one, two, four, five and No. six cores are all around No. three assembly of sand cores and adopt lock core technology to form a whole.
Rolling stock brake valve intracoelomic cavity sand core structure of the present invention, described in it, the two-stage emergency valve of a core is partly semicircle lug, two-stage emergency valve another part of described No. two cores is another semicircle lug, the corresponding bonding formation two-stage emergency valve of two parts semicircle lug portion, the cylinder core print of a described core and cambered surface section are corresponding bonding with the first groove and the 5th groove of No. three cores respectively; The lug boss of described No. two cores and cambered surface section are corresponding bonding with the second groove and the cambered surface of No. three cores respectively, and the second groove core print seat of the lower core print of described No. two cores and a core is bonding; The 3rd groove correspondence of the cambered surface Duan Yusan core of described No. four cores is bonding, and the first groove core print seat of the core print of described No. four cores and a core is bonding; The projection core print of described No. five cores and arc section are corresponding bonding with platform core print seat and the 4th groove of No. three cores respectively; The lap joint of the described No. six cores overlap joint seat corresponding with No. three cores is bonding, and the cylinder core print of No. six core other ends is corresponding bonding with the first groove core print seat of No. five cores; The cylinder core print of described No. three cores is corresponding bonding with the second groove core print seat of No. five cores.
The present invention adopts six cores to be combined as an overall structure, the all inner chambers of main valve body and casting gas circuit have been reflected comprehensively, be conducive to improve assembly of sand core precision, reduce the bonding position of core, can effectively reduce and produce overlap, veining defect quantity, and the present invention is designed into the overlap joint of core or adhesive portion bit transition machined surface or easily clears up part, so, even if produced overlap, also can remove by normal casting cleaning or the normal machining of product.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the stereogram of a core in the present invention.
Fig. 3 is the stereogram of No. two cores in the present invention.
Fig. 4 is the stereogram of No. three cores in the present invention.
Fig. 5 is the stereogram of No. four cores in the present invention.
Fig. 6 is the stereogram of No. five cores in the present invention.
Fig. 7 is the stereogram of No. six cores in the present invention.
Fig. 8 is the combination schematic diagram of a core and No. three cores in the present invention.
Fig. 9 is the combination schematic diagram of No. two cores and No. three cores in the present invention.
Figure 10 is the combination schematic diagram of No. four cores and No. three cores in the present invention.
Figure 11 is the combination schematic diagram of No. five cores and No. three cores in the present invention.
Figure 12 is the combination schematic diagram of No. six cores and No. three cores in the present invention.
Figure 13 is the combination schematic diagram of a core and No. two cores in the present invention.
Figure 14 is the combination schematic diagram of a core and No. four cores in the present invention.
Figure 15 is the combination schematic diagram of No. five cores and No. six cores in the present invention.
Mark in figure: 1 is a core, 1a is the semicircle lug of a core two-stage emergency valve part, 1b is the cylinder core print of a core, 1c is the cambered surface section of a core, 1d is the first groove core print seat of a core, 1e is the second groove core print seat of a core, 2 is No. two cores, 2a is the semicircle lug of No. two core two-stage emergency valve parts, 2b is the lug boss of No. two cores, 2c is the cambered surface section of No. two cores, 2d is the lower core print of No. two cores, 3 is No. three cores, 3a is the first groove, 3b is the second groove, 3c is the 3rd groove, 3d is platform core print seat, 3e is the 4th groove, 3f is overlap joint seat, 3g is the cylinder core print of No. three cores, 3h is the cambered surface of No. three cores, 3i is the 5th groove, 4 is No. four cores, 4a is the cambered surface section of No. four cores, 4b is the core print of No. four cores, 5 is No. five cores, 5a is the projection core print of No. five cores, 5b is the arc section of No. five cores, 5c is the first groove core print seat of No. five cores, 5d is the second groove core print seat of No. five cores, 6 is No. six cores, 6a is the lap joint of No. six cores, 6b is the cylinder core print of No. six cores.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
As shown in Figure 1, a kind of rolling stock brake valve intracoelomic cavity sand core structure, described inner chamber sand core structure is comprised of six cores, core 1 and checking cylinder upstream cavity, checking cylinder downstream cavity and two-stage emergency valve partial shape coupling, No. two cores 2 and auxiliary reservoir chamber and two-stage emergency valve another part form fit, No. three cores 3 and brake pipe contact groove, service portion, auxiliary reservoir inflation contact groove, accelerate to alleviate aeration tank and, subtract contact groove form fit two innings, No. four core 4 mates with acceleration graduated release valve cavity shape, No. five cores 5 with accelerate graduated release valve portion, office subtracts valve portion and alleviates gas circuit hole coupling, No. six cores 6 are with braking tube chambers and accelerate graduated release valve portion form fit, described No. three cores 3 collection main valve body installed surfaces, capping on main valve body, under main valve body, before capping and main valve body, capping is integrated, described one, two, four, five and No. six cores are all around No. three assembly of sand cores and adopt lock core technology to form a whole.
Wherein, the two-stage emergency valve of a described core 1 is partly semicircle lug 1a, two-stage emergency valve another part of described No. two cores 2 is another semicircle lug 2a, the corresponding bonding formation two-stage emergency valve of two parts semicircle lug portion, the cylinder core print 1b of a described core 1 and cambered surface section 1c are corresponding bonding with the first groove 3a and the 5th groove 3i of No. three cores 3 respectively.
The lug boss 2b of described No. two cores 2 and cambered surface section 2c are corresponding bonding with the second groove 3b and the cambered surface 3h of No. three cores 3 respectively, and the second groove core print seat 1e of the lower core print 2d of described No. two cores 2 and a core 1 is bonding.
The cambered surface section 4a of described No. four cores 4 is corresponding bonding with the 3rd groove 3c of No. three cores 3, and the first groove core print seat 1d of the core print 4b of described No. four cores 4 and a core 1 is bonding.
The projection core print 5a of described No. five cores 5 and arc section 5b are corresponding bonding with platform core print seat 3d and the 4th groove 3e of No. three cores 3 respectively.
The overlap joint seat 3f that the lap joint 6a of described No. six cores 6 is corresponding with No. three cores 3 is bonding, and the cylinder core print 6b of No. six core 6 other ends is corresponding bonding with the first groove core print seat 5c of No. five cores 5.
The cylinder core print 3g of described No. three cores 3 is corresponding bonding with the second groove core print seat 5d of No. five cores 5.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (2)
1. a rolling stock brake valve intracoelomic cavity sand core structure, it is characterized in that: described inner chamber sand core structure is comprised of six cores, a core (1) and checking cylinder upstream cavity, checking cylinder downstream cavity and two-stage emergency valve partial shape coupling, No. two cores (2) and auxiliary reservoir chamber and two-stage emergency valve another part form fit, No. three cores (3) and brake pipe contact groove, service portion, auxiliary reservoir inflation contact groove, accelerate to alleviate aeration tank and, subtract contact groove form fit two innings, No. four cores (4) mate with acceleration graduated release valve cavity shape, No. five cores (5) and acceleration graduated release valve portion, office subtracts valve portion and alleviates gas circuit hole coupling, No. six cores (6) are with braking tube chamber and accelerate graduated release valve portion form fit, described No. three cores (3) collection main valve body installed surface, capping on main valve body, under main valve body, before capping and main valve body, capping is integrated, described one, two, four, five and No. six cores are all around No. three assembly of sand cores and adopt lock core technology to form a whole.
2. rolling stock brake valve intracoelomic cavity sand core structure according to claim 1, it is characterized in that: the two-stage emergency valve of a described core (1) is partly semicircle lug (1a), two-stage emergency valve another part of described No. two cores (2) is another semicircle lug (2a), the corresponding bonding formation two-stage emergency valve of two parts semicircle lug portion, the cylinder core print (1b) of a described core (1) and cambered surface section (1c) are corresponding bonding with the first groove (3a) and the 5th groove (3i) of No. three cores (3) respectively; The lug boss (2b) of described No. two cores (2) and cambered surface section (2c) are corresponding bonding with the second groove (3b) and the cambered surface (3h) of No. three cores (3) respectively, and the lower core print (2d) of described No. two cores (2) is bonding with the second groove core print seat (1e) of a core (1); The cambered surface section (4a) of described No. four cores (4) is corresponding bonding with the 3rd groove (3c) of No. three cores (3), and the core print (4b) of described No. four cores (4) is bonding with the first groove core print seat (1d) of a core (1); The projection core print (5a) of described No. five cores (5) and arc section (5b) are corresponding bonding with platform core print seat (3d) and the 4th groove (3e) of No. three cores (3) respectively; The lap joint (6a) of described No. six cores (6) the overlap joint seat (3f) corresponding with No. three cores (3) is bonding, and the cylinder core print (6b) of No. six cores (6) other end is corresponding bonding with the first groove core print seat (5c) of No. five cores (5); The cylinder core print (3g) of described No. three cores (3) is corresponding bonding with the second groove core print seat (5d) of No. five cores (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310691554.6A CN103706764B (en) | 2013-12-17 | 2013-12-17 | Inner cavity sand core structure of brake valve of railway vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310691554.6A CN103706764B (en) | 2013-12-17 | 2013-12-17 | Inner cavity sand core structure of brake valve of railway vehicle |
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| Publication Number | Publication Date |
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| CN103706764A true CN103706764A (en) | 2014-04-09 |
| CN103706764B CN103706764B (en) | 2015-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310691554.6A Active CN103706764B (en) | 2013-12-17 | 2013-12-17 | Inner cavity sand core structure of brake valve of railway vehicle |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101298091A (en) * | 2008-06-17 | 2008-11-05 | 宁波合力模具科技股份有限公司 | Low pressure multiple-core casting technique of engine V6 aluminum cylinder |
| DE20221850U1 (en) * | 2002-10-04 | 2008-11-20 | Meccanica Bassi S.P.A. | Core assembly, main core box and mold for casting an engine cylinder head and engine cylinder head made therewith |
| CN103043074A (en) * | 2012-12-24 | 2013-04-17 | 青岛四方车辆研究所有限公司 | Emergency valve for high-speed motor train units and urban rail transit vehicles |
| CN103100669A (en) * | 2013-02-25 | 2013-05-15 | 芜湖市金贸流体科技股份有限公司 | Valve body combined casting process for sluice valve with flange casting bolt hole |
| CN203621397U (en) * | 2013-12-17 | 2014-06-04 | 四川制动科技股份有限公司 | Inner cavity sand core structure of railway vehicle braking valve body |
-
2013
- 2013-12-17 CN CN201310691554.6A patent/CN103706764B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20221850U1 (en) * | 2002-10-04 | 2008-11-20 | Meccanica Bassi S.P.A. | Core assembly, main core box and mold for casting an engine cylinder head and engine cylinder head made therewith |
| CN101298091A (en) * | 2008-06-17 | 2008-11-05 | 宁波合力模具科技股份有限公司 | Low pressure multiple-core casting technique of engine V6 aluminum cylinder |
| CN103043074A (en) * | 2012-12-24 | 2013-04-17 | 青岛四方车辆研究所有限公司 | Emergency valve for high-speed motor train units and urban rail transit vehicles |
| CN103100669A (en) * | 2013-02-25 | 2013-05-15 | 芜湖市金贸流体科技股份有限公司 | Valve body combined casting process for sluice valve with flange casting bolt hole |
| CN203621397U (en) * | 2013-12-17 | 2014-06-04 | 四川制动科技股份有限公司 | Inner cavity sand core structure of railway vehicle braking valve body |
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| CN103706764B (en) | 2015-06-17 |
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Address after: Three road 620010 Meishan province Sichuan City Dongpo District of Meishan science and Technology Industrial Park No. 68 Patentee after: Meisha Zhongke Brake Technology Co., Ltd. Address before: Three road 620010 Meishan province Sichuan City Dongpo District of Meishan science and Technology Industrial Park No. 68 Patentee before: Sichuan Brake Science and Technology Co. Ltd. |