CN103706764B - 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 PDF

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Publication number
CN103706764B
CN103706764B CN201310691554.6A CN201310691554A CN103706764B CN 103706764 B CN103706764 B CN 103706764B CN 201310691554 A CN201310691554 A CN 201310691554A CN 103706764 B CN103706764 B CN 103706764B
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CN
China
Prior art keywords
cores
core
groove
bonding
valve
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CN201310691554.6A
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Chinese (zh)
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CN103706764A (en
Inventor
赵正雄
张剑
朱成章
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四川制动科技股份有限公司
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Priority to CN201310691554.6A priority Critical patent/CN103706764B/en
Publication of CN103706764A publication Critical patent/CN103706764A/en
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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

A kind of inner cavity sand core structure of brake valve of railway vehicle
Technical field
The invention belongs to railway vehicle brake valve body manufacturing technology field, particularly a kind of inner cavity sand core structure of brake valve of railway vehicle.
Background technology
Main valve body is the key components and parts of railway vehicle 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 is many with chamber, wall thickness based on 7mm, genus thin wall foundry goods.In traditional processing technology, main valve body inner chamber is formed by multistage, multilayer, multiple fuse, fuse quantity is not from 7 to 14 etc., fuse section, interlayer joint badly not only usually produce the casting flaws such as dislocation, overlap, burr, scab owing to docking, and the physical dimension of core cavity and casting wall thickness accuracy are reduced.After such product loading in train longtime running, because of the impact of the factors such as vibrations, environment, its inner chamber " overlap, burr, scab " is understood progressively corrosion and is dropped, air flue or other parts that fray that may block this product thus make its performance break down, cause the consequences such as railway line interrupt run, bring larger society, economic loss to railway transportation cause.
Aborning, due to the restriction by product structure, the above-mentioned mass defect that core cavity and gas circuit exist not only is difficult to overcome, be difficult to find aborning, and is difficult to remove.
Summary of the invention
The object of the invention is to: for above-mentioned Problems existing, a kind of inner cavity sand core structure of brake valve of railway vehicle is provided, the main valve body inner cavity size precision adopting this structure to produce is high, uniform wall thickness, inner chamber and gas circuit bright and clean, the dislocation of nothing overlap joint, casting overlap, veining defect reduce, even if generation overlap, burr are also easy to cleaning or are removed when the normal machining of product.
Technical scheme of the present invention is achieved in that a kind of inner cavity sand core structure of brake valve of railway vehicle, it is characterized in that: described inner chamber sand core structure is made up of six cores, a 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 cores mate with acceleration graduated release valve cavity shape, No. five cores and acceleration graduated release valve portion, office subtracts valve portion and alleviates gas circuit hole coupling, No. six cores are with braking tube chamber 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 all adopt lock core technology to form a whole around No. three assembly of sand cores.
Inner cavity sand core structure of brake valve of railway vehicle of the present invention, described in it, the two-stage emergency valve part of a core is 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 portion of two parts semicircle lug, the cylinder core print of a described core and cambered surface section are corresponding bonding with the first groove of No. three cores and the 5th groove respectively; The lug boss of described No. two cores and cambered surface section are corresponding bonding with the second groove of No. three cores and cambered surface respectively, and the lower core print of described No. two cores is bonding with the second groove core print seat of a core; 3rd groove correspondence of the cambered surface Duan Yusan core of described No. four cores is bonding, and the core print of described No. four cores is bonding with the first groove core print seat of a core; The projection core print of described No. five cores and arc section are corresponding bonding with the platform core print seat of No. three cores and the 4th groove 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, reflect all inner chambers of main valve body and casting gas circuit comprehensively, be conducive to improving assembly of sand core precision, reduce core bonding site, effectively can reduce and produce overlap, veining defect quantity, and the overlap joint of core or bonding site transfer are designed into machined surface or easily clear up part by the present invention, so, even if create overlap, also 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.
Detailed description of the invention
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 clearly understand, 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, be not intended to limit the present invention.
As shown in Figure 1, a kind of inner cavity sand core structure of brake valve of railway vehicle, described inner chamber sand core structure is made up 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 collect 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 all adopt lock core technology to form a whole around No. three assembly of sand cores.
Wherein, the two-stage emergency valve part of a described core 1 is 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 portion of two parts semicircle lug, the cylinder core print 1b of a described core 1 and cambered surface section 1c is corresponding bonding with the first groove 3a of No. three cores 3 and the 5th groove 3i respectively.
The lug boss 2b of described No. two cores 2 and cambered surface section 2c is corresponding bonding with the second groove 3b and 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 is corresponding bonding with the platform core print seat 3d of No. three cores 3 and the 4th groove 3e 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 amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.

Claims (2)

1. an inner cavity sand core structure of brake valve of railway vehicle, it is characterized in that: described inner chamber sand core structure is made up 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) are mated 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 all adopt lock core technology to form a whole around No. three assembly of sand cores.
2. inner cavity sand core structure of brake valve of railway vehicle according to claim 1, it is characterized in that: the two-stage emergency valve part of a described core (1) is 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 portion of two parts semicircle lug, the cylinder core print (1b) of a described core (1) and cambered surface section (1c) are corresponding bonding with first groove (3a) of No. three cores (3) and the 5th groove (3i) respectively; The lug boss (2b) of described No. two cores (2) and cambered surface section (2c) are corresponding bonding with second groove (3b) of No. three cores (3) and cambered surface (3h) 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 the platform core print seat (3d) of No. three cores (3) and the 4th groove (3e) 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 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).
CN201310691554.6A 2013-12-17 2013-12-17 Inner cavity sand core structure of brake valve of railway vehicle CN103706764B (en)

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CN103706764B true CN103706764B (en) 2015-06-17

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Citations (5)

* Cited by examiner, † Cited by third party
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
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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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.