CN103072565B - Air brake valve for trailer of tractor - Google Patents
Air brake valve for trailer of tractor Download PDFInfo
- Publication number
- CN103072565B CN103072565B CN201310050637.7A CN201310050637A CN103072565B CN 103072565 B CN103072565 B CN 103072565B CN 201310050637 A CN201310050637 A CN 201310050637A CN 103072565 B CN103072565 B CN 103072565B
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- air brake
- brake valve
- assembly
- lamp switch
- stop lamp
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- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The invention relates to an air brake valve for a trailer of a tractor. The air brake valve comprises an upper shell of an air brake valve assembly and a connecting plate assembly, a piston and a mandrill, a sealing ring assembly, a lower sell of the air brake valve assembly and a circular rubber valve assembly, and a brake lamp switch assembly. The upper shell of the air brake valve assembly and the connecting plate assembly are connected with the lower sell of the air brake valve assembly and the circular rubber valve assembly provided with upper and lower shell sealing rings through a bolt, a spring washer and a flat gasket. The piston and the mandrill as well as the sealing ring assembly are installed inside the upper shell of the air brake valve assembly and the connecting plate assembly as well as the lower sell of the air brake valve assembly and the circular rubber valve assembly. The brake lamp switch assembly is installed outside the lower sell of the air brake valve assembly and the circular rubber valve assembly, and the brake lamp switch assembly is connected with the lower shell through a sealing gasket of the brake lamp switch assembly and is arranged vertical to an exhaust vent of the air brake valve and a high pressure gas output plug screw. The exhaust vent of the air brake valve and the high pressure gas output plug screw are respectively arranged on both sides of the air brake valve of the trailer of the tractor.
Description
Technical field
The invention belongs to trac. field, relate to a kind of air brake valve, relate in particular to a kind of tractor trailer air brake valve.
Background technology
At present, the tractor trailer air brake valve of producing both at home and abroad, is mostly diaphragm spring type or piston spring formula.The former manufacturing process more complicated, case material adopts zinc alloy more expensive; Although the latter is easily manufactured compared with the former, case material adopts cast iron, and when assembling parts is become to air brake valve assembly and air brake valve is arranged on trac., assembly technology is more complicated still.Between piston and core bar, form by multiple assembling parts in addition, assembly technology is more complicated also.Therefore, develop a kind of rational in infrastructure, low price, relatively simple, the safe and reliable tractor trailer air brake valve of manufacturing process, will be subject to users' favor.Verification experimental verification, we possess compact conformation by the air brake valve of development, and its sealing property, deceleration and stopping performance, rigidity, intensity is the advantage such as good all, is equally applicable in tractor-trailer braking system.
Summary of the invention
The object of the present invention is to provide a kind of rational in infrastructure, cost is lower, strength and stiffness and good seal performance, can improve brake system Static and dynamic characteristic performance, easy for installation and service-strong tractor trailer air brake valve.
Technical scheme of the present invention is: tractor trailer air brake valve, comprising: air brake valve assembly upper shell and connecting panel assembly, piston and core bar and seal ring assembly, air brake valve assembly lower house and round rubber valve member, stop lamp switch assembly; Air brake valve assembly upper shell and connecting panel assembly are connected with round rubber valve member by bolt, spring shim, flat shim and air brake valve assembly lower house that upper-lower casing seal ring is installed; Piston and core bar and seal ring assembly are arranged on air brake valve assembly upper shell and connecting panel assembly and air brake valve assembly lower house and round rubber valve member inside; Stop lamp switch assembly is arranged on air brake valve assembly lower house and round rubber valve member outside, is connected, and is arranged vertically with air brake valve deflation hole and output high-pressure gas plug screw by stop lamp switch assembly packing seal with lower house; Air brake valve deflation hole and output high-pressure gas plug screw are arranged in tractor trailer air brake valve both sides.
Air brake valve assembly upper shell and connecting panel assembly, comprising: air brake valve upper shell, air brake valve big spring, air brake valve deflation hole, air brake valve assembly connecting panel snap ring, push rod, air brake valve assembly connecting panel, bolt, spring shim, flat shim; There is the air brake valve assembly connecting panel snap ring of concave shape and there is air brake valve assembly connecting panel coaxial welding; Having two is connected with trac. base plate with the air brake valve assembly connecting panel of the strip hole of line of centers symmetry; By have bilateral symmetry protrude middle the circular port of the air brake valve upper shell that connects otic placode by air brake valve assembly connecting panel snap ring and two and the strip hole insertion air brake valve assembly upper shell of line of centers symmetry arrive with connecting panel assembly after, then half-twist makes stop lamp switch assembly direction downward; Stretch out by air brake valve upper shell centre hole push rod upper end, in the middle of it, shoulder upper surface contacts with air brake valve upper shell centre hole lower surface, tangent inside push rod lower end cylinder outside insertion air brake valve big spring, middle shoulder lower surface contacts with air brake valve big spring upper surface; Also tangent in the piston of outside, air brake valve big spring lower end insertion piston and core bar, lower surface contacts with core bar inside bottom surface with piston; Air brake valve upper shell is connected by bolt, spring shim, flat shim and air brake valve assembly lower house that upper-lower casing seal ring is installed successively.
Piston and core bar and seal ring assembly, comprising: piston O-sealing washer, piston and core bar assembly pull back spring, piston and core bar; The piston having in piston and the core bar of two O-ring seals grooves inserts air brake valve upper shell and lower housing cavity, and its core bar inserts endoporus in the middle of lower house; In the piston of piston and core bar, place air brake valve big spring tangent, in piston, lower surface contacts with air brake valve big spring upper surface; Piston upper surface is all the time below air brake valve deflation hole; Piston and core bar pull back spring upper end are inserted on the boss that piston is connected with core bar and are tangent, and lower end is inserted in the middle of lower house on boss and be tangent; The endoporus of piston and core bar communicates with air brake valve deflation hole; Gap between core bar excircle and lower house inner periphery communicates with output high-pressure gas plug screw.
Air brake valve assembly lower house and round rubber valve member, comprising: upper-lower casing seal ring, the circular steel plate of circular hole, round rubber valve, lower house, output high-pressure gas plug screw packing seal, output high-pressure gas plug screw, air intake valve spring, air inlet plug screw packing seal, air inlet plug screw; The air brake valve assembly lower house that upper-lower casing seal ring is installed is connected with air brake valve upper shell by bolt, spring shim, flat shim successively; Centre arranges the uniform circular steel plates of five to six circular holes that arrange in a circular hole and excircle and puts into round rubber valve, and rubber valve top is disk, below middle part round boss higher than edge annular boss; Insert in the annular groove of round rubber valve lower end air intake valve spring upper end, and its lower end is inserted the inner chamber of air inlet plug screw and contacted with bottom surface; Air inlet plug screw one end is connected with air brake valve assembly lower house by air inlet plug screw packing seal, and the other end is connected with high pressure admission pipeline; Air brake valve assembly lower house is connected with output high-pressure gas plug screw by output high-pressure gas plug screw packing seal.
Stop lamp switch assembly, comprising: stop lamp switch assembly packing seal, stop lamp switch housing, stop lamp switch assembly dustproof and waterproof protective case, stop lamp switch negative spring sheet, the anodal double-screw bolt of stop lamp switch, connection wire lock jack panel, stop lamp switch negative pole double-screw bolt; Stop lamp switch assembly and output high-pressure gas plug screw and air brake valve deflation hole are arranged vertically, and direction is downward; Stop lamp switch housing is tightly connected by stop lamp switch assembly packing seal and lower house; Stop lamp switch negative pole double-screw bolt one end is processed into screw thread and is connected with negative electrical wire, the other end is processed into semi-circular cylindrical and inserts after the semicircle circular hole that stop lamp switch negative spring sheet has same size affixedly, the more anodal double-screw bolt of the stop lamp switch identical with thread size is put in mould by injection machine injection molded simultaneously; After stop lamp switch housing molding respectively the anodal double-screw bolt of stop lamp switch with on stop lamp switch negative pole double-screw bolt, respectively install two and be connected wire lock jack panel, then stop lamp switch assembly dustproof and waterproof protective case is arranged on stop lamp switch housing.
The present invention adopts the good effect producing after technique scheme to be: tractor trailer air brake valve is rational in infrastructure, cost is lower, can realize fast assembling-disassembling, piston and core bar assembly are made into one by engineering plastics, easy for installation and the good piston that has ensured tractor trailer air brake valve and core bar assembly in use with upper shell, lower house, valve seat and spring are coaxial, below rubber valve, middle part round boss plays with air intake valve spring and air inlet plug screw coaxial, strengthen sealing property, static response and the dynamic characteristics performance of tractor trailer air brake valve are improved, stop lamp switch assembly structure is simple, use reliable, ensure the traffic safety of Tractor-trailer unit.
Brief description of the drawings
Fig. 1 is the main TV structure cross-sectional schematic of tractor trailer air brake valve of the present invention.
Fig. 2 is the plan structure schematic diagram of tractor trailer air brake valve of the present invention.
Fig. 3 is the structural representation of looking up of tractor trailer air brake valve of the present invention.
Fig. 4 is the left TV structure schematic diagram of tractor trailer air brake valve of the present invention.
Fig. 5 is the right TV structure schematic diagram of tractor trailer air brake valve of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described further.As shown in Fig. 1 ~ 5, tractor trailer air brake valve, mainly by air inlet plug screw 1, air inlet plug screw packing seal 2, air intake valve spring 3, stop lamp switch assembly packing seal 4, stop lamp switch housing 5, stop lamp switch assembly dustproof and waterproof protective case 6, stop lamp switch negative spring sheet 7, the anodal double-screw bolt 8 of stop lamp switch, connect wire lock jack panel 9, stop lamp switch negative pole double-screw bolt 10, stop lamp switch assembly 11, air brake valve upper shell 12, air brake valve big spring 13, piston O-sealing washer 14, piston and core bar and seal ring assembly 15, air brake valve deflation hole 16, air brake valve assembly connecting panel snap ring 17, air brake valve assembly upper shell and connecting panel assembly 18, push rod 19, air brake valve assembly connecting panel 20, bolt 21, spring shim 22, flat shim 23, upper-lower casing seal ring 24, piston and core bar assembly pull back spring 25, piston and core bar 26, circular steel plate 27, round rubber valve 28, lower house 29, air brake valve assembly lower house and round rubber valve member 30, output high-pressure gas plug screw packing seal 31, output high-pressure gas plug screw 32 forms.
Air brake valve assembly connecting panel snap ring 17 is first processed the rectangular opening of circular port in the middle of and and line of centers symmetry by a circular steel plate, then is pressed into a spill snap ring; Air brake valve assembly connecting panel 20, first processes an internal diameter and air brake valve assembly connecting panel snap ring 17 by a rectangular steel plates and has the strip hole of the middle circular port of same inner diameter and two and line of centers symmetry, then be pressed into a vertical T-type plank; The air brake valve assembly connecting panel snap ring 17 and air brake valve assembly connecting panel 20 coaxial welding of identical diameter of bore will be there is; Being processed with two is connected with trac. base plate with the air brake valve assembly connecting panel 20 of the strip hole of line of centers symmetry, protrude by thering is bilateral symmetry the air brake valve upper shell 12 that connection otic placode is made up of engineering plastics, the strip hole of the middle circular port by air brake valve assembly connecting panel snap ring 17 and two and line of centers symmetry, insert air brake valve assembly upper shell after connecting panel assembly 18, it is downward that half-twist makes stop lamp switch assembly 11 directions again, realized easily the fast assembling-disassembling of tractor trailer air brake valve assembly.
Piston and core bar 26 are to be made into one by engineering plastics; Two O-ring seals grooves of last shaping of outside piston week, piston O-sealing washer 14 is put into all two the O-ring seals grooves of outside piston and is played and the 12 bore seal effects of air brake valve upper shell; Piston cavity is put into air brake valve big spring 13, and piston cavity plays and air brake valve big spring 13 directional taggings; Piston upper surface is all the time below air brake valve deflation hole 16; Piston and core bar pull back spring 25 are inserted on the boss that piston is connected with core bar, and the boss that piston is connected with core bar plays and piston and core bar pull back spring 25 directional taggings; The endoporus of piston and core bar 26 communicates with air brake valve deflation hole 16; Gap between core bar excircle and lower house 29 inner peripherys communicates with output high-pressure gas plug screw 32.
Interior uniform five to six circular holes that arrange of excircle on circular steel plate 27, centre arranges a circular hole, circular steel plate 27 is put into centre that round rubber valve 28 is thicker and have the round rubber blank of a small circular boss, on circular steel plate 27, place again thinner round rubber blank, after rubber hot forming, circular hole and rubber fit tightly; Rubber valve 28 tops are disks, below middle part round boss higher than edge annular boss; Round rubber valve 28 top disks as required with air brake valve assembly lower house 29 in the middle of boss close contacts or separate; Insert in the annular groove of round rubber valve 28 lower ends air intake valve spring 3 upper ends, and its lower end is inserted the inner chamber of air inlet plug screw 1 and contacted with bottom surface, and middle part round boss is coaxial with air intake valve spring 3 and air inlet plug screw 1 below for rubber valve 28, play the guiding role; Air inlet plug screw 1 one end is connected with air brake valve assembly lower house 29 by air inlet plug screw packing seal 2, and the other end is connected with high pressure admission pipeline; Air brake valve assembly lower house 29 is connected with output high-pressure gas plug screw 32 by output high-pressure gas plug screw packing seal 31.
Stop lamp switch assembly 11 is arranged vertically with output high-pressure gas plug screw 32 and air brake valve deflation hole 16, and direction is downward; Stop lamp switch housing 5 is tightly connected by stop lamp switch assembly packing seal 4 and lower house 29; Stop lamp switch negative pole double-screw bolt 10 one end are processed into screw thread and are connected with negative electrical wire, the other end is processed into semi-circular cylindrical and inserts after the semicircle circular hole that stop lamp switch negative spring sheet 7 has same size affixedly, the more anodal double-screw bolt 8 of the stop lamp switch identical with thread size is put in mould by injection machine injection molded simultaneously; Stop lamp switch housing 5 after being shaped respectively the anodal double-screw bolt 8 of stop lamp switch with on stop lamp switch negative pole double-screw bolt 10, respectively install two and be connected wire lock jack panel 9, then stop lamp switch assembly dustproof and waterproof protective case 6 is arranged on stop lamp switch housing 5.
Tractor trailer air brake valve is rational in infrastructure, cost is lower, can realize fast assembling-disassembling, piston and core bar assembly are to be made into one by engineering plastics, easy for installation and the good piston that has ensured tractor trailer air brake valve and core bar assembly in use with upper shell, lower house, valve seat and spring are coaxial, below rubber valve, middle part round boss plays with air intake valve spring and air inlet plug screw coaxial, strengthen sealing property, static response and the dynamic characteristics performance of tractor trailer air brake valve are improved, stop lamp switch assembly structure is simple, use reliable, ensure the traffic safety of Tractor-trailer unit.
Claims (4)
1. tractor trailer air brake valve, comprising: air brake valve assembly upper shell and connecting panel assembly (18), piston and core bar and seal ring assembly (15), air brake valve assembly lower house and round rubber valve member (30), stop lamp switch assembly (11); It is characterized in that: air brake valve assembly upper shell and connecting panel assembly (18) are connected with round rubber valve member (30) by bolt (21), spring shim (22), flat shim (23) and air brake valve assembly lower house that upper-lower casing seal ring (24) is installed; Piston and core bar and seal ring assembly (15) are arranged on air brake valve assembly upper shell and connecting panel assembly (18) and air brake valve assembly lower house and round rubber valve member (30) inside; Stop lamp switch assembly (11) is arranged on air brake valve assembly lower house and round rubber valve member (30) outside, be connected with air brake valve assembly lower house (29) by stop lamp switch assembly packing seal (4), and be arranged vertically with air brake valve deflation hole (16) and output high-pressure gas plug screw (32); Air brake valve deflation hole (16) and output high-pressure gas plug screw (32) are arranged in tractor trailer air brake valve both sides; Air brake valve assembly upper shell and connecting panel assembly (18), comprising: air brake valve upper shell (12), air brake valve big spring (13), air brake valve deflation hole (16), air brake valve assembly connecting panel snap ring (17), push rod (19), air brake valve assembly connecting panel (20), bolt (21), spring shim (22), flat shim (23); Air brake valve assembly connecting panel snap ring (17) and air brake valve assembly connecting panel (20) coaxial welding; Having two is connected with trac. base plate with the air brake valve assembly connecting panel (20) of the strip hole of line of centers symmetry; Protrude the middle circular port of the air brake valve upper shell (12) that connects otic placode by air brake valve assembly connecting panel snap ring (17) and two and be inserted into after air brake valve assembly upper shell and connecting panel assembly (18) with the strip hole of line of centers symmetry thering is bilateral symmetry, then half-twist makes stop lamp switch assembly (11) direction downward; Stretch out by air brake valve upper shell (12) centre hole push rod (19) upper end, in the middle of it, shoulder upper surface contacts with air brake valve upper shell (12) centre hole lower surface, air brake valve big spring (13) inner side tangent is inserted in cylinder outside, push rod (19) lower end, and middle shoulder lower surface contacts with air brake valve big spring (13) upper surface; Also tangent in the piston of outside, air brake valve big spring (13) lower end insertion piston and core bar (26), lower surface contacts with core bar (26) inside bottom surface with piston; Air brake valve upper shell (12) is connected by bolt (21), spring shim (22), flat shim (23) and air brake valve assembly lower house (29) that upper-lower casing seal ring (24) is installed successively.
2. tractor trailer air brake valve according to claim 1, is characterized in that: piston and core bar and seal ring assembly (15), comprising: piston O-sealing washer (14), piston and core bar assembly pull back spring (25), piston and core bar (26); The piston having in piston and the core bar (26) of two O-ring seals grooves inserts air brake valve upper shell (12) and air brake valve assembly lower house (29) inner chamber, and its core bar inserts air brake valve assembly lower house (29) centre endoporus; In the piston of piston and core bar (26), place air brake valve big spring (13) tangent, in piston, lower surface contacts with air brake valve big spring (13) lower surface; Piston upper surface is all the time below air brake valve deflation hole (16); Piston and core bar assembly pull back spring (25) upper end are inserted on the boss that piston is connected with core bar and are tangent, and lower end is inserted in the middle of air brake valve assembly lower house (29) on boss and be tangent; The endoporus of piston and core bar (26) communicates with air brake valve deflation hole (16); Gap between core bar excircle and air brake valve assembly lower house (29) inner periphery communicates with output high-pressure gas plug screw (32).
3. tractor trailer air brake valve according to claim 1, it is characterized in that: air brake valve assembly lower house and round rubber valve member (30), comprising: upper-lower casing seal ring (24), circular hole circular steel plate (27), round rubber valve (28), air brake valve assembly lower house (29), output high-pressure gas plug screw packing seal (31), output high-pressure gas plug screw (32), air intake valve spring (3), air inlet plug screw packing seal (2), air inlet plug screw (1); The air brake valve assembly lower house (29) that upper-lower casing seal ring (24) is installed is connected with air brake valve upper shell (12) by bolt (21), spring shim (22), flat shim (23) successively; Centre arranges the uniform circular steel plates of five to six circular holes (27) that arrange in a circular hole and excircle and puts into round rubber valve (28), and rubber valve (28) top is disk, below middle part round boss higher than edge annular boss; Insert in the annular groove of round rubber valve (28) lower end air intake valve spring (3) upper end, and its lower end is inserted the inner chamber of air inlet plug screw (1) and contacted with bottom surface; Air inlet plug screw (1) one end is connected with air brake valve assembly lower house (29) by air inlet plug screw packing seal (2), and the other end is connected with high pressure admission pipeline; Air brake valve assembly lower house (29) is connected with output high-pressure gas plug screw (32) by output high-pressure gas plug screw packing seal (31).
4. tractor trailer air brake valve according to claim 1, it is characterized in that: stop lamp switch assembly (11), comprising: stop lamp switch assembly packing seal (4), stop lamp switch housing (5), stop lamp switch assembly dustproof and waterproof protective case (6), stop lamp switch negative spring sheet (7), the anodal double-screw bolt of stop lamp switch (8), connection wire lock jack panel (9), stop lamp switch negative pole double-screw bolt (10); Stop lamp switch assembly (11) is arranged vertically with output high-pressure gas plug screw (32) and air brake valve deflation hole (16), and direction is downward; Stop lamp switch housing (5) is tightly connected by stop lamp switch assembly packing seal (4) and air brake valve assembly lower house (29); Stop lamp switch negative pole double-screw bolt (10) one end is processed into screw thread and is connected with negative electrical wire, the other end is processed into semi-circular cylindrical and inserts stop lamp switch negative spring sheet (7) and have after the semicircle circular hole of same size affixedly, the more anodal double-screw bolt of the stop lamp switch identical with thread size (8) is put in mould by injection machine injection molded simultaneously; Stop lamp switch housing (5) after being shaped respectively the anodal double-screw bolt of stop lamp switch (8) with on stop lamp switch negative pole double-screw bolt (10), respectively install two and be connected wire lock jack panel (9), then stop lamp switch assembly dustproof and waterproof protective case (6) is arranged on stop lamp switch housing (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310050637.7A CN103072565B (en) | 2013-02-16 | 2013-02-16 | Air brake valve for trailer of tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310050637.7A CN103072565B (en) | 2013-02-16 | 2013-02-16 | Air brake valve for trailer of tractor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103072565A CN103072565A (en) | 2013-05-01 |
| CN103072565B true CN103072565B (en) | 2014-10-15 |
Family
ID=48149320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310050637.7A Expired - Fee Related CN103072565B (en) | 2013-02-16 | 2013-02-16 | Air brake valve for trailer of tractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103072565B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104477160B (en) * | 2014-12-12 | 2016-11-09 | 南阳理工学院 | Three-wheeled motor car air brake valve |
| CN107380154B (en) * | 2017-08-21 | 2024-02-20 | 闫明李 | Tractor trailer brake control valve |
| CN109466529A (en) * | 2018-12-17 | 2019-03-15 | 南阳理工学院 | Agricultural traction engine trailer diaphragm type air brake valve device |
| CN109466528A (en) * | 2018-12-17 | 2019-03-15 | 南阳理工学院 | Agricultural traction engine trailer Piston Pneumatic Brake Valve assembly |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4112961A (en) * | 1976-01-22 | 1978-09-12 | Sloan Valve Company | Tractor protection valve |
| DE3338690A1 (en) * | 1983-10-25 | 1985-05-02 | Wabco Westinghouse Fahrzeugbremsen GmbH, 3000 Hannover | Device for controlling brake pressure |
| CN2102224U (en) * | 1991-11-02 | 1992-04-22 | 北京市汽刹车配件厂 | Pneumatic brake valve |
| CN200957809Y (en) * | 2006-07-03 | 2007-10-10 | 金万良 | Single pipe-line pneumatic brake valve |
| CN203047240U (en) * | 2013-02-16 | 2013-07-10 | 南阳理工学院 | Air brake valve for tractor trailer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3130644B2 (en) * | 1992-05-22 | 2001-01-31 | 株式会社ナブコ | Air brake system |
-
2013
- 2013-02-16 CN CN201310050637.7A patent/CN103072565B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4112961A (en) * | 1976-01-22 | 1978-09-12 | Sloan Valve Company | Tractor protection valve |
| DE3338690A1 (en) * | 1983-10-25 | 1985-05-02 | Wabco Westinghouse Fahrzeugbremsen GmbH, 3000 Hannover | Device for controlling brake pressure |
| CN2102224U (en) * | 1991-11-02 | 1992-04-22 | 北京市汽刹车配件厂 | Pneumatic brake valve |
| CN200957809Y (en) * | 2006-07-03 | 2007-10-10 | 金万良 | Single pipe-line pneumatic brake valve |
| CN203047240U (en) * | 2013-02-16 | 2013-07-10 | 南阳理工学院 | Air brake valve for tractor trailer |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平5-319247A 1993.12.03 |
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| CN103072565A (en) | 2013-05-01 |
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