CN101857020A - Two-stage stab-braking brake master valve - Google Patents

Two-stage stab-braking brake master valve Download PDF

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Publication number
CN101857020A
CN101857020A CN 201010174536 CN201010174536A CN101857020A CN 101857020 A CN101857020 A CN 101857020A CN 201010174536 CN201010174536 CN 201010174536 CN 201010174536 A CN201010174536 A CN 201010174536A CN 101857020 A CN101857020 A CN 101857020A
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China
Prior art keywords
valve
piston
spring
shell
cavity
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Granted
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CN 201010174536
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Chinese (zh)
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CN101857020B (en
Inventor
田青锋
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CHANGTONG TECHNOLOGY CO., LTD.
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HENAN CHANG TONG TECHNOLOGY Co Ltd
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Priority to CN2010101745367A priority Critical patent/CN101857020B/en
Publication of CN101857020A publication Critical patent/CN101857020A/en
Application granted granted Critical
Publication of CN101857020B publication Critical patent/CN101857020B/en
Expired - Fee Related legal-status Critical Current
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Abstract

The invention relates to a two-stage stab-braking brake master valve (II type) which comprises an upper valve body and a lower valve body, wherein both the upper valve body and the lower valve body are provided with an air inlet hole and an air outlet hole, the upper edge of the lower valve body is inserted into the lower edge of the upper valve body, an upper piston assembly is installed at the upper part in the upper valve body, the upper piston assembly comprises a piston bush, an upper piston, a spring package clip and an ejector pin seat, the inside and the outside of the spring package clip are respectively provided with a pressure intensity spring and a steady pressure spring, a certain distance is reserved between the upper part of the pressure intensity spring and the lower surface of the wide disc of the ejector pin seat, and the distance enables the valve to produce a secondary pressure intensity to quickly and powerfully combine a brake block and a brake drum so as to maintain a favorable combination condition all the time and ensure a favorable brake effect all the time. Simultaneously, the friction between the brake block and the brake drum can be decreased to the greatest extent, and the brake block can be prevented from being carbonized so as to prolong the service life of the brake.

Description

Two-stage cadence braking master valve
One, technical field
The present invention relates to a kind of automobile brake general pump, particularly relate to a kind of two-stage cadence braking master valve (II type).
Two, background technology
Existing standard form braking main valve has a little less than the braking force control brake distance that can not be good during heavy duty; Also have the controlled pedal bounce heavy, this shortcoming directly has influence on operation comfort, can increase shortcomings such as chaufeur physical demands in addition.
In order to improve above-mentioned shortcoming, people have invented a kind of " the potent master cylinder of light load ", this technology has clear improvement to above-mentioned shortcoming, but also there are many defectives in it, and the principle of this technology is to have changed air-flow velocity, after the air-flow speedup under the equal conditions, than being easier to damage the brake system annex, as brake facing, brake drum, pipe fitting etc., heavy then have influence on suspension system, under equal conditions braking is too anxious in addition, the bad control of feel, cause brake facing to heat up rapidly easily, cause carbonization, directly have influence on braking effect, it is too urgent to brake, also can cause partially sliding, influence resistance to overturning, thereby produce insecurity, or unnecessary economic loss.
Three, summary of the invention
To the objective of the invention is in order addressing the above problem, a kind of two-stage cadence braking master valve (II type) to be provided, this master cylinder has improved safety, operation comfort and economy, can improve the shortcoming of above-mentioned conventional art fully.
Technical scheme of the present invention is: a kind of two-stage cadence braking master valve (II type), contain upper valve body and following valve body, be equipped with induction opening and air gate on described upper valve body and the following valve body, insert in the lower edge of upper valve body the upper edge of described valve body down, described upper valve body internal upper part is equipped with the upper piston assembly, described upper valve body bottom is equipped with valve member, the middle part is equipped with the lower valve assembly in the described valve body down, between the described up and down valve member by being installed in down the lower piston transmission of valve body internal upper part, described upper piston assembly contains piston bush, upper piston, spring bag card, tip-lever support, described piston bush is installed in the stepped hole on upper valve body top by jump ring and dust-proof cushion deck, described upper piston is installed in the piston bush by jump ring, described upper piston is the inner piston of cavity that is, form the bearing fit face by hermetically-sealed construction between the outside face of upper piston and the piston bush inside face, be provided with pull back spring between upper piston and the piston bush; The upper piston bottom is stretched out cavity shape projection and is pusher body, and this pusher body is over against the described valve member of going up; The body of rod hypomere of described tip-lever support inserts in the cavity of described upper piston bottom pusher body, periphery, top at tip-lever support is a disc width of cloth dish, described spring Bao Kawei is columnar structured, upper wall is provided with reducing, the body of rod diameter coupling of this reentrant diameter and tip-lever support, the spring bag card sidewall first half and top are provided with three breach that are communicated in the reducing, make spring bag card top form three extensions, spring bag card lower edges is respectively equipped with three interior flangings, three in-flangess are corresponding with three breach, and three flangings are corresponding with three extensions; The width of cloth dish of described tip-lever support is provided with and the cooresponding width of cloth of described extension hole, the body of rod of described tip-lever support penetrates from the reducing of spring bag card, its body of rod hypomere passes the center of three in-flangess of spring bag card, and the extension of spring bag card inserts in the described width of cloth hole; The interior flanging of described spring bag card bottom is sitting in the lower surface in the described upper piston cavity; Upper edge in the described upper piston cavity is provided with annular spring, the width of cloth dish of tip-lever support is positioned under the jump ring, the outer pressure-stabilizing spring that is set with of described spring bag card, this pressure-stabilizing spring lower support are on the flanging of spring bag card, and the upper support of pressure-stabilizing spring is below the width of cloth dish of tip-lever support; The described spring Bao Kanei tip-lever support body of rod is set with the pressure spring outward, and the lower support of this pressure spring is on the in-flanges of spring bag card, and there is certain distance on the top of pressure spring apart from the lower surface of the width of cloth dish of tip-lever support.
Described upper valve body and following valve body connecting portion are provided with seal ring; Be provided with hermetically-sealed construction in described piston bush outside face and the upper valve body and between the inside face of its coupling.
Be provided with the upper shell that communicates with the upper valve body induction opening in the described upper valve body, the upper edge of this upper shell is provided with annular in-flanges; By jump ring valve member is installed in the described upper shell, last valve member comprises that cavity shape is gone up valve, is coated on valve upper surface packing seal; The upper end that should go up valve is provided with inside and outside step, is provided with convex annular edge upwards at interior step edge; The described valve of going up is set with the valve plug outward, and surfaces externally and internally of valve plug forms the bearing fit face with last valve outside face and upper shell inside face respectively on this, and is provided with hermetically-sealed construction; Described going up between valve plug top and the outer step of last valve is supported with retracing spring; This retracing spring supports the in-flanges of going up valve and packing seal and upper shell top and forms valve, and the jump ring location that is installed in upper shell inwall bottom is arranged at the described valve plug bottom of going up; Be cavity between described upper shell and the upper valve body, this cavity is communicated with the upper valve body air gate;
Between the inner surface of outer cover on described valve body top down and the described lower piston is the bearing fit face, and the top guide bar of this lower piston inserts in the cavity of going up valve, and this top guide bar outside face and last valve cavity inside face form the bearing fit face, and are provided with hermetically-sealed construction; Form air chamber between the upper surface of this lower piston and the last valve plug surface, this air chamber is communicated with cavity between the upper valve body shell by pore and described upper shell; Described lower piston bottom is provided with lower guide rod, and this lower guide rod is over against the lower valve assembly;
Be provided with and the identical lower shell of following valve body induction opening in the valve body under described, the top of this lower shell is provided with in-flanges; Described lower shell is equipped with the lower valve assembly by jump ring, and the lower valve assembly comprises valve under the cavity shape, is coated on down the packing seal of valve upper surface; The upper end of this time valve is provided with inside and outside step, is provided with convex annular edge upwards at interior step edge; Described valve down is set with down the valve plug outward, and the surfaces externally and internally of this time valve plug forms the bearing fit face with following valve outside face and lower shell inside face respectively, and is provided with hermetically-sealed construction; Be supported with retracing spring between the outer step of described valve plug top down and following valve, the in-flanges on valve and packing seal and lower shell top formed valve under this retracing spring supported; Described valve plug bottom is down supported by the plug that is installed in down valve body lower end by jump ring; This plug middle part is extended with interior pipe, and pipe inserts in the described valve cavity down in this, forms the bearing fit face by hermetically-sealed construction and following valve cavity inside face; Between described lower shell and the following valve shell is cavity, and this cavity is communicated with following valve body air gate; Being provided with hermetically-sealed construction between described plug outside face and the following valve interior surface, is air chamber between described plug upper surface and the following valve plug lower surface, and this air chamber is communicated to cavity between lower shell and the following valve body by pore.
The described packing seal upper surface of going up on the valve is provided with two concentric annular protrusions, the annular protrusion of outside and the in-flanges of upper shell coupling, the pusher body lower end coupling of the annular protrusion of the inside and upper piston; Packing seal upper surface on the described valve down is provided with two concentric annular protrusions, the annular protrusion of outside and the in-flanges of lower shell coupling, the lower guide rod lower end coupling of the annular protrusion of the inside and lower piston.
Upper end, described tip-lever support side is provided with draw-in groove, between this draw-in groove and the described dust-proof cushion deck dust-proof cushion is installed.
Pass through the fastener captive joint between the described upper and lower valve body.
Described valve body up and down is equipped with three induction openings and three air gates.
Beneficial effect of the present invention
This brake main valve can produce a kind of short energy in initial weak pressure stage of brake, can impel between brake facing and the brake drum rapidly and strong combining, thereby the good binding condition is arranged all the time, guarantees to have good braking effect all the time.Can at utmost reduce simultaneously the friction between brake facing and the brake drum, prevent the brake facing carbonization, prolong the service life of brake.
Four, description of drawings
Fig. 1 is that this two-stage cadence braking master valve (II type) is faced the sectional structure scheme drawing
Fig. 2 is the structural representation of facing of the spring bag card among Fig. 1
Fig. 3 is the plan structure scheme drawing of Fig. 2
Fig. 4 is the A-A cross-sectional view of Fig. 3
Fig. 5 is the perspective view of this spring bag card
Fig. 6 is the structural representation of facing of tip-lever support among Fig. 1
Fig. 7 is a B-B sectional structure scheme drawing among Fig. 6
Fig. 8 is the plan structure scheme drawing of Fig. 6
Fig. 9 is the perspective view of this tip-lever support
Five, the specific embodiment
Referring to Fig. 1-Fig. 9,1. plugs among the figure, 2. jump ring, 3.O type circle, 4. fastener, 5.O type circle, 6, O type circle, 7. descend the valve plug, 8. retracing spring, 9.O type circle, 10. descend valve, 11. following valve body induction opening, 12. packing seal, 13. following valve body, 14.O type circle, 15. jump ring, 16. last valve plug, 17. seal ring, 18. upper valve body, 19. pore, 20.O type circle, 21.O type circle, 22. retracing spring, 23.O type circle, 24. upper valve body induction opening, 25. last valve, 26. packing seal, 27. piston bush, 28.O type circle, 29.O type circle, 30. retracing spring, 33. spring bag card, 34. pressure spring, 35. pressure spring, 36.O type circle, 37. upper piston, 38. jump ring, 39. jump ring, 40. dust-proof cushion, 41. jump ring, 42. dust-proof cushion deck, 43. upper valve body air gate, 44. upper shell, 45. lower piston, 46.O type circle, 47. lower shell, 48. following valve body air gate, 49. pore, 50. breach, 51. tip-lever support.
Wherein, wherein 33-1. reducing, 33-2. breach, 33-3. sidewall, 33-4. flanging, 33-5. in-flanges, 51-1. width of cloth dish, 51-2. width of cloth hole, 51-4. draw-in groove, the 51-5. body of rod.
Embodiment: a kind of two-stage cadence braking master valve (II type), contain upper valve body and following valve body, be equipped with induction opening and air gate on described upper valve body and the following valve body, insert in the lower edge of upper valve body the upper edge of described valve body down, described upper valve body internal upper part is equipped with the upper piston assembly, described upper valve body bottom is equipped with valve member, the middle part is equipped with the lower valve assembly in the described valve body down, between the described up and down valve member by being installed in down the lower piston transmission of valve body internal upper part, described upper piston assembly contains piston bush, upper piston, spring bag card, tip-lever support, described piston bush is installed in the stepped hole on upper valve body top by jump ring and dust-proof cushion deck, described upper piston is installed in the piston bush by jump ring, described upper piston is the inner piston of cavity that is, form the bearing fit face by hermetically-sealed construction (as O type circle 28) between the outside face of upper piston and the piston bush inside face, be provided with pull back spring between upper piston and the piston bush; The upper piston bottom is stretched out cavity shape projection and is pusher body, and this pusher body is over against the described valve member of going up; The body of rod hypomere of described tip-lever support inserts in the cavity of described upper piston bottom pusher body, periphery, top at tip-lever support is a disc width of cloth dish, described spring Bao Kawei is columnar structured, upper wall is provided with reducing, the body of rod diameter coupling of this reentrant diameter and tip-lever support, the spring bag card sidewall first half and top are provided with three breach that are communicated in the reducing, make spring bag card top form three extensions, spring bag card lower edges is respectively equipped with three interior flangings, three in-flangess are corresponding with three breach, and three flangings are corresponding with three extensions; The width of cloth dish of described tip-lever support is provided with and the cooresponding width of cloth of described extension hole, the body of rod of described tip-lever support penetrates from the reducing of spring bag card, its body of rod hypomere passes the center of three in-flangess of spring bag card, and the extension of spring bag card inserts in the described width of cloth hole; The interior flanging of described spring bag card bottom is sitting in the lower surface in the described upper piston cavity; Upper edge in the described upper piston cavity is provided with annular spring, the width of cloth dish of tip-lever support is positioned under the jump ring, the outer pressure-stabilizing spring that is set with of described spring bag card, this pressure-stabilizing spring lower support are on the flanging of spring bag card, and the upper support of pressure-stabilizing spring is below the width of cloth dish of tip-lever support; The described spring Bao Kanei tip-lever support body of rod is set with the pressure spring outward, and the lower support of this pressure spring is on the in-flanges of spring bag card, and there is certain distance on the top of pressure spring apart from the lower surface of the width of cloth dish of tip-lever support.
Described upper valve body and following valve body connecting portion are provided with seal ring; Be provided with hermetically-sealed construction (as O type circle 14,46) in described piston bush outside face and the upper valve body and between the inside face of its coupling.
Be provided with the upper shell that communicates with the upper valve body induction opening in the described upper valve body, the upper edge of this upper shell is provided with annular in-flanges; By jump ring valve member is installed in the described upper shell, last valve member comprises that cavity shape is gone up valve, is coated on valve upper surface packing seal; The upper end that should go up valve is provided with inside and outside step, is provided with convex annular edge upwards at interior step edge; The described valve of going up is set with the valve plug outward, and surfaces externally and internally of valve plug forms the bearing fit face with last valve outside face and upper shell inside face respectively on this, and is provided with hermetically-sealed construction (as O type circle 20,21); Described going up between valve plug top and the outer step of last valve is supported with retracing spring; This retracing spring supports the in-flanges of going up valve and packing seal and upper shell top and forms valve, and the jump ring location that is installed in upper shell inwall bottom is arranged at the described valve plug bottom of going up; Be cavity between described upper shell and the upper valve body, this cavity is communicated with the upper valve body air gate;
Between the inner surface of outer cover on described valve body top down and the described lower piston is the bearing fit face, the top guide bar of this lower piston inserts in the cavity of going up valve, this top guide bar outside face and last valve cavity inside face form the bearing fit face, and are provided with hermetically-sealed construction (as O type circle 23); Form air chamber between the upper surface of this lower piston and the last valve plug surface, this air chamber is communicated with cavity between the upper valve body shell by pore and described upper shell; Described lower piston bottom is provided with lower guide rod, and this lower guide rod is over against the lower valve assembly;
Be provided with and the identical lower shell of following valve body induction opening in the valve body under described, the top of this lower shell is provided with in-flanges; Described lower shell is equipped with the lower valve assembly by jump ring, and the lower valve assembly comprises valve under the cavity shape, is coated on down the packing seal of valve upper surface; The upper end of this time valve is provided with inside and outside step, is provided with convex annular edge upwards at interior step edge; Described valve down is set with down the valve plug outward, and the surfaces externally and internally of this time valve plug forms the bearing fit face with following valve outside face and lower shell inside face respectively, and is provided with hermetically-sealed construction (as O type circle 5,6); Be supported with retracing spring between the outer step of described valve plug top down and following valve, the in-flanges on valve and packing seal and lower shell top formed valve under this retracing spring supported; Described valve plug bottom is down supported by the plug that is installed in down valve body lower end by jump ring; This plug middle part is extended with interior pipe, and pipe inserts in the described valve cavity down in this, forms the bearing fit face by hermetically-sealed construction (as O type circle 9) and following valve cavity inside face; Between described lower shell and the following valve shell is cavity, and this cavity is communicated with following valve body air gate; Being provided with hermetically-sealed construction (as O type circle 3) between described plug outside face and the following valve interior surface, is air chamber between described plug upper surface and the following valve plug lower surface, and this air chamber is communicated to cavity between lower shell and the following valve body by pore.
The described packing seal upper surface of going up on the valve is provided with two concentric annular protrusions, the annular protrusion of outside and the in-flanges of upper shell coupling, the pusher body lower end coupling of the annular protrusion of the inside and upper piston; Packing seal upper surface on the described valve down is provided with two concentric annular protrusions, the annular protrusion of outside and the in-flanges of lower shell coupling, the lower guide rod lower end coupling of the annular protrusion of the inside and lower piston.
Upper end, described tip-lever support side is provided with draw-in groove, between this draw-in groove and the described dust-proof cushion deck dust-proof cushion is installed.
Pass through the fastener captive joint between the described upper and lower valve body.
Described valve body up and down is equipped with three induction openings and three air gates.
When tip-lever support presses down, tip-lever support presses down pressure-stabilizing spring by width of cloth dish and gives upper piston with transmission of pressure, and upper piston is descending, and its pusher body is given last valve with transmission of pressure, last valve is descending and open, be communicated with induction opening and air gate, when last valve was opened, air pressure can form on the ground of upper piston and upward pressure, the upper piston back-pressure that makes progress, upper piston roof pressure pressure-stabilizing spring, pressure-stabilizing spring shrinks under the situation of bidirectional stress
When described tip-lever support is descending as required, the extension of spring bag card passes the width of cloth hole upward movement of tip-lever support, because in-to-in pressure spring upper surface has certain distance apart from the width of cloth dish lower surface of tip-lever support, at tip-lever support width of cloth dish lower surface and this segment distance of pressure spring upper surface, has only outside pressure-stabilizing spring pressure-bearing, after treating the width of cloth dish lower surface of in-to-in pressure spring bump tip-lever support, thereby can produce a kind of short energy, at this moment it is the starting stage of pressure process, it also is the weak pressure stage of air pressure, the energy that both clash into generation can make air pressure under equal conditions raise rapidly, and return rapidly, thereby strengthen the dynamics that combines of brake facing and brake drum, form and put the effect of stopping; thereupon can guarantee that brake facing and brake drum have the good binding condition all the time, guarantee to have good braking effect all the time.Described " secondary pressure " that Here it is.
Simultaneously, when pressure-stabilizing spring and the common pressure-bearing of pressure spring and when working simultaneously, can form a kind of surging energy, can make braking force produce a kind of have intermittent energy impact and fluctuation under the equal conditions of this energy in the air pressure range of setting in the pressure process, summary by theory and practice, this spring up to be actually strengthened braking force, improved braking effect.

Claims (7)

1. a two-stage cadence braking master valve (II type), contain upper valve body and following valve body, be equipped with induction opening and air gate on described upper valve body and the following valve body, insert in the lower edge of upper valve body the upper edge of described valve body down, described upper valve body internal upper part is equipped with the upper piston assembly, described upper valve body bottom is equipped with valve member, the middle part is equipped with the lower valve assembly in the described valve body down, between the described up and down valve member by being installed in down the lower piston transmission of valve body internal upper part, it is characterized in that: described upper piston assembly contains piston bush, upper piston, spring bag card, tip-lever support, described piston bush is installed in the stepped hole on upper valve body top by jump ring and dust-proof cushion deck, described upper piston is installed in the piston bush by jump ring, described upper piston is the inner piston of cavity that is, form the bearing fit face by hermetically-sealed construction between the outside face of upper piston and the piston bush inside face, be provided with pull back spring between upper piston and the piston bush; The upper piston bottom is stretched out cavity shape projection and is pusher body, and this pusher body is over against the described valve member of going up; The body of rod hypomere of described tip-lever support inserts in the cavity of described upper piston bottom pusher body, periphery, top at tip-lever support is a disc width of cloth dish, described spring Bao Kawei is columnar structured, upper wall is provided with reducing, the body of rod diameter coupling of this reentrant diameter and tip-lever support, the spring bag card sidewall first half and top are provided with three breach that are communicated in the reducing, make spring bag card top form three extensions, spring bag card lower edges is respectively equipped with three interior flangings, three in-flangess are corresponding with three breach, and three flangings are corresponding with three extensions; The width of cloth dish of described tip-lever support is provided with and the cooresponding width of cloth of described extension hole, the body of rod of described tip-lever support penetrates from the reducing of spring bag card, its body of rod hypomere passes the center of three in-flangess of spring bag card, and the extension of spring bag card inserts in the described width of cloth hole; The interior flanging of described spring bag card bottom is sitting in the lower surface in the described upper piston cavity; Upper edge in the described upper piston cavity is provided with annular spring, the width of cloth dish of tip-lever support is positioned under the jump ring, the outer pressure-stabilizing spring that is set with of described spring bag card, this pressure-stabilizing spring lower support are on the flanging of spring bag card, and the upper support of pressure-stabilizing spring is below the width of cloth dish of tip-lever support; The described spring Bao Kanei tip-lever support body of rod is set with the pressure spring outward, and the lower support of this pressure spring is on the in-flanges of spring bag card, and there is certain distance on the top of pressure spring apart from the lower surface of the width of cloth dish of tip-lever support.
2. two-stage cadence braking master valve according to claim 1 (II type) is characterized in that: described upper valve body and following valve body connecting portion are provided with seal ring; Be provided with hermetically-sealed construction in described piston bush outside face and the upper valve body and between the inside face of its coupling.
3. two-stage cadence braking master valve according to claim 1 (II type) is characterized in that: be provided with the upper shell that communicates with the upper valve body induction opening in the described upper valve body, the upper edge of this upper shell is provided with annular in-flanges; By jump ring valve member is installed in the described upper shell, last valve member comprises that cavity shape is gone up valve, is coated on valve upper surface packing seal; The upper end that should go up valve is provided with inside and outside step, is provided with convex annular edge upwards at interior step edge; The described valve of going up is set with the valve plug outward, and surfaces externally and internally of valve plug forms the bearing fit face with last valve outside face and upper shell inside face respectively on this, and is provided with hermetically-sealed construction; Described going up between valve plug top and the outer step of last valve is supported with retracing spring; This retracing spring supports the in-flanges of going up valve and packing seal and upper shell top and forms valve, and the jump ring location that is installed in upper shell inwall bottom is arranged at the described valve plug bottom of going up; Be cavity between described upper shell and the upper valve body, this cavity is communicated with the upper valve body air gate;
Between the inner surface of outer cover on described valve body top down and the described lower piston is the bearing fit face, and the top guide bar of this lower piston inserts in the cavity of going up valve, and this top guide bar outside face and last valve cavity inside face form the bearing fit face, and are provided with hermetically-sealed construction; Form air chamber between the upper surface of this lower piston and the last valve plug surface, this air chamber is communicated with cavity between the upper valve body shell by pore and described upper shell; Described lower piston bottom is provided with lower guide rod, and this lower guide rod is over against the lower valve assembly;
Be provided with and the identical lower shell of following valve body induction opening in the valve body under described, the top of this lower shell is provided with in-flanges; Described lower shell is equipped with the lower valve assembly by jump ring, and the lower valve assembly comprises valve under the cavity shape, is coated on down the packing seal of valve upper surface; The upper end of this time valve is provided with inside and outside step, is provided with convex annular edge upwards at interior step edge; Described valve down is set with down the valve plug outward, and the surfaces externally and internally of this time valve plug forms the bearing fit face with following valve outside face and lower shell inside face respectively, and is provided with hermetically-sealed construction; Be supported with retracing spring between the outer step of described valve plug top down and following valve, the in-flanges on valve and packing seal and lower shell top formed valve under this retracing spring supported; Described valve plug bottom is down supported by the plug that is installed in down valve body lower end by jump ring; This plug middle part is extended with interior pipe, and pipe inserts in the described valve cavity down in this, forms the bearing fit face by hermetically-sealed construction and following valve cavity inside face; Between described lower shell and the following valve shell is cavity, and this cavity is communicated with following valve body air gate; Being provided with hermetically-sealed construction between described plug outside face and the following valve interior surface, is air chamber between described plug upper surface and the following valve plug lower surface, and this air chamber is communicated to cavity between lower shell and the following valve body by pore.
4. two-stage cadence braking master valve according to claim 1 (II type), it is characterized in that: the described packing seal upper surface of going up on the valve is provided with two concentric annular protrusions, the annular protrusion of outside and the in-flanges of upper shell coupling, the pusher body lower end coupling of the annular protrusion of the inside and upper piston; Packing seal upper surface on the described valve down is provided with two concentric annular protrusions, the annular protrusion of outside and the in-flanges of lower shell coupling, the lower guide rod lower end coupling of the annular protrusion of the inside and lower piston.
5. two-stage cadence braking master valve according to claim 1 (II type) is characterized in that: upper end, described tip-lever support side is provided with draw-in groove, between this draw-in groove and the described dust-proof cushion deck dust-proof cushion is installed.
6. two-stage cadence braking master valve according to claim 1 (II type) is characterized in that: pass through the fastener captive joint between the described upper and lower valve body.
7. two-stage cadence braking master valve according to claim 1 (II type) is characterized in that: described valve body up and down is equipped with three induction openings and three air gates.
CN2010101745367A 2010-05-18 2010-05-18 Two-stage stab-braking brake master valve Expired - Fee Related CN101857020B (en)

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Application Number Priority Date Filing Date Title
CN2010101745367A CN101857020B (en) 2010-05-18 2010-05-18 Two-stage stab-braking brake master valve

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Application Number Priority Date Filing Date Title
CN2010101745367A CN101857020B (en) 2010-05-18 2010-05-18 Two-stage stab-braking brake master valve

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CN101857020A true CN101857020A (en) 2010-10-13
CN101857020B CN101857020B (en) 2012-05-23

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CN2010101745367A Expired - Fee Related CN101857020B (en) 2010-05-18 2010-05-18 Two-stage stab-braking brake master valve

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* Cited by examiner, † Cited by third party
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CN102529939A (en) * 2012-02-16 2012-07-04 河南昌通科技有限公司 Three-level balance piston assembly
CN104192126A (en) * 2014-09-22 2014-12-10 昌通科技有限公司 Three-stage point brake balance piston assembly
CN104192129A (en) * 2014-09-22 2014-12-10 昌通科技有限公司 Hanwag two-stage/three-stage inching brake master valve with retarding function
CN104192128A (en) * 2014-09-22 2014-12-10 昌通科技有限公司 Jiefang151 two-stage/three-stage inching brake master valve
CN104192130A (en) * 2014-09-22 2014-12-10 昌通科技有限公司 Two-stage or three-stage snub brake main valve with speed reduction of Beifang Benchi
CN104401317A (en) * 2014-11-10 2015-03-11 昌通科技有限公司 Five-hole two-stage and three-stage snub brake main valve provided with filter screen for Deron series
CN104401313A (en) * 2014-11-10 2015-03-11 昌通科技有限公司 Two-stage and three-stage snub brake main valve provided with filter screen and retarder for Dawei series
CN104401318B (en) * 2014-11-10 2017-01-25 昌通科技有限公司 Delong-series secondary and third snub brake master valve with filter mesh and retarder

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CN2790860Y (en) * 2005-03-31 2006-06-28 万安集团有限公司 Automobile relay valve assembly
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CN102529939A (en) * 2012-02-16 2012-07-04 河南昌通科技有限公司 Three-level balance piston assembly
CN104192126A (en) * 2014-09-22 2014-12-10 昌通科技有限公司 Three-stage point brake balance piston assembly
CN104192129A (en) * 2014-09-22 2014-12-10 昌通科技有限公司 Hanwag two-stage/three-stage inching brake master valve with retarding function
CN104192128A (en) * 2014-09-22 2014-12-10 昌通科技有限公司 Jiefang151 two-stage/three-stage inching brake master valve
CN104192130A (en) * 2014-09-22 2014-12-10 昌通科技有限公司 Two-stage or three-stage snub brake main valve with speed reduction of Beifang Benchi
CN104192130B (en) * 2014-09-22 2016-10-05 昌通科技有限公司 Two grades, the three grades of cadence braking master valves that north benz band slows down
CN104192129B (en) * 2014-09-22 2016-08-24 昌通科技有限公司 Two grades, the three grades of cadence braking master valves that band slows down
CN104192126B (en) * 2014-09-22 2017-07-07 昌通科技有限公司 Three-level point is stopped dummy piston assembly
CN104401317A (en) * 2014-11-10 2015-03-11 昌通科技有限公司 Five-hole two-stage and three-stage snub brake main valve provided with filter screen for Deron series
CN104401318B (en) * 2014-11-10 2017-01-25 昌通科技有限公司 Delong-series secondary and third snub brake master valve with filter mesh and retarder
CN104401317B (en) * 2014-11-10 2017-07-07 昌通科技有限公司 Two grades of five hole of band filter screen and three-level cadence braking master valve for moral dragon series
CN104401313B (en) * 2014-11-10 2017-07-07 昌通科技有限公司 For two grades of big prestige serial band filter screen band retarder and three-level cadence braking master valve
CN104401313A (en) * 2014-11-10 2015-03-11 昌通科技有限公司 Two-stage and three-stage snub brake main valve provided with filter screen and retarder for Dawei series

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