CN101857019B - Two-stage stab-braking double-cavity parallel arrangement type brake master valve - Google Patents
Two-stage stab-braking double-cavity parallel arrangement type brake master valve Download PDFInfo
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- CN101857019B CN101857019B CN2010101745282A CN201010174528A CN101857019B CN 101857019 B CN101857019 B CN 101857019B CN 2010101745282 A CN2010101745282 A CN 2010101745282A CN 201010174528 A CN201010174528 A CN 201010174528A CN 101857019 B CN101857019 B CN 101857019B
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Abstract
The invention relates to a two-stage stab-braking double-cavity parallel arrangement type brake master valve which comprises an upper valve body and two lower valve bodies installed in parallel at the low part of the upper valve body, wherein an upper piston assembly is installed in the upper valve body, the upper piston assembly comprises an upper piston with a hollow cavity inside and an ejector pin, an ejector pin seat and a spring package clip which are installed in the upper piston, the inside and the outside of the spring package clip are respectively provided with a pressure intensity spring and a steady pressure spring, the upper part of the pressure intensity spring is away from the lower surface of the wide disc of the ejector pin seat for a certain distance, and the distance can enable the valve to produce a secondary pressure intensity to enable a brake block and a brake drum to form a quick and powerful combination 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
One, technical field
The present invention relates to a kind of automobile brake main valve, particularly relate to a kind of two-stage stab-braking double-cavity parallel arrangement type brake master valve.
Two, background technology
Existing standard form braking main valve has a little less than the control effort 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 the weight of 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 plate, brake wheel, 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 plate 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
The objective of the invention is provides a kind of two-stage stab-braking double-cavity parallel arrangement type brake master valve in order to address the above problem, and 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 stab-braking double-cavity parallel arrangement type brake master valve, contain upper valve body, following valve body, valve body is two under it, be installed in the upper valve body bottom side by side, in upper valve body inside the upper piston assembly is installed, in two following valve bodies, valve member is installed, be connected by compensating bar between described upper piston assembly and the valve member, described upper piston assembly bottom is pressed in the compensating bar middle part by steel ball, described compensating bar two ends are pressed in two valve member tops respectively, described upper piston assembly contains the inner upper piston of cavity that is, and be installed in push rod in the upper piston, tip-lever support and spring bag card, described upper piston bottom is stretched out one section and is the described steel ball of pusher body roof pressure, insert in the interior cavity of described pusher body the body of rod lower end of described tip-lever support, periphery, tip-lever support top is circular spoke dish, described spring Bao Kawei drum-shaped structure, 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 a spring Bao Kasan in-flanges, 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 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, described spring bag card is set with pressure-stabilizing spring outward, and this pressure-stabilizing spring lower support is 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 width of cloth dish lower surface of tip-lever support.
Described valve member contains the lower piston of hollow and is installed in the hollow valve of lower piston bottom, and the side of described lower piston and following body cavity is the bearing fit face, and is provided with hermetically-sealed construction; Be provided with retracing spring between the interior table top of the lower surface of lower piston and following valve body, and form air chamber, this air chamber is communicated with air gate on the following valve body by the slit between lower piston bottom guide rod and the following valve interior surface; The coaxial installation of described valve and lower piston, the valve sidepiece is the induction opening of following valve body, the valve upper surface is provided with packing element, there is outer step the valve upper end, the bottom is provided with the contraction step, the valve bottom is provided with the plug of hollow, and this plug is fixedly mounted on down the bottom of valve body, and the contraction step of valve bottom inserts in the stepped hole of coupling in the plug; Between the lateral surface of valve and the medial surface of plug is the bearing fit face, and is provided with hermetically-sealed construction; The valve outer cover is equipped with retracing spring, and this retracing spring is supported between plug top and the outer step lower surface of valve; This retracing spring supports the packing element of valve upper surface and the annular arrangement convex edge formation valve of following valve inner coupling.
Described plug and following valve body connecting portion are provided with hermetically-sealed construction.
Described lower piston top is equipped with by screw thread can adjust thimble, and this thimble top is supported on bottom, described compensating bar two ends for the thimble body, and the bottom of this thimble is a thread segment, is installed in lower piston top inner chamber.
Described lower piston is installed in down in the valve body by jump ring.
Described plug bottom is equipped with dust-proof cushion.
Be provided with lower through-hole in the described valve sidewall, cavity and the contraction step of valve bottom and the cavity between the plug step under being communicated with respectively between valve body and the lower piston bottom guide rod.
Be installed together by fastener between the valve body about described.
Described push rod is the taper push rod, and described tip-lever support inside is provided with the tapered blind hole with the push rod coupling, is connected with dust protecting cap between described push rod and the upper valve body.
Beneficial effect of the present invention
This braking main valve can produce a kind of short energy in the initial weak pressure stage of braking, can impel between brake plate and the brake wheel 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 plate and the brake wheel, prevent the brake plate carbonization, prolong the service life of braking.
Four, description of drawings
Fig. 1 is the structural representation of this two-stage stab-braking double-cavity parallel arrangement type brake master valve
Fig. 2 is the left TV structure scheme drawing of Fig. 1
Fig. 3 is the structural representation of facing of Fig. 1 medi-spring bag card
Fig. 4 is the plan structure scheme drawing of Fig. 3
Fig. 5 is the A-A cross-sectional view of Fig. 4
Fig. 6 is the perspective view of this spring bag card
Fig. 7 is the structural representation of facing of tip-lever support among Fig. 1
Fig. 8 is the plan structure scheme drawing of Fig. 7
Fig. 9 is a B-B sectional structure scheme drawing among Fig. 7
Figure 10 is the perspective view of this tip-lever support
Five, the specific embodiment
Referring to Fig. 1-Figure 10,1. dust-proof cushions among the figure, 2. plug, 3.O type circle, 4. through hole, 5.O type circle, 6.O type circle, 7. retracing spring, 8. descend valve body, 9. valve, 10. packing seal, 11. the guide rod of lower piston, 12. retracing spring, 13.O type circle, 14. fastener, 15. lower piston, 16. steel ball, 17. upper piston, 18. pressure-stabilizing spring, 19. spring bag card, 20. pressure spring, 21. tip-lever support, 22. jump ring, 23. dust protecting cap, 24. push rod, 25. upper valve body, 26. compensating bar, 27. can adjust thimble, 28. jump ring, 29. air gate, 30. induction opening, 31. air gate, 32. induction opening, 33. annular arrangement convex edge, 34. air chamber, wherein 19-1. reducing, 19-2. breach, 19-3. sidewall, 19-4. flanging, 19-5. in-flanges, 21-1. width of cloth dish, 21-2. the body of rod, 21-3. width of cloth hole, 21-4. tapered blind hole.
Embodiment: a kind of two-stage stab-braking double-cavity parallel arrangement type brake master valve, contain upper valve body 25, following valve body 8, valve body 8 is two under it, be installed in upper valve body 25 bottoms side by side, in upper valve body 25 inside the upper piston assembly is installed, in two following valve bodies 8, valve member is installed, be connected by compensating bar 26 between described upper piston assembly and the valve member, described upper piston assembly bottom is pressed in compensating bar 26 middle parts by steel ball 16, described compensating bar 26 two ends are pressed in two valve member tops respectively, described upper piston assembly contains the inner upper piston 17 of cavity that is, and be installed in push rod 14 in the upper piston 17, tip-lever support 21 and spring bag card 19, described upper piston 17 bottoms are stretched out one section and are the described steel ball 16 of pusher body roof pressure, insert in the interior cavity of described pusher body the body of rod lower end of described tip-lever support 21, periphery, tip-lever support 21 tops is circular spoke dish 21-1, described spring bag card 19 is a drum-shaped structure, upper wall is provided with reducing 19-1, the body of rod diameter coupling of this reducing 19-1 diameter and tip-lever support 21, the spring bag card sidewall 19-3 first half and top are provided with three breach 19-2 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-flanges 19-5 are corresponding with three breach, and three flanging 19-4 are corresponding with three extensions; The width of cloth dish 21-1 of described tip-lever support is provided with and the cooresponding width of cloth of described extension hole 21-3, the body of rod 21-2 of described tip-lever support penetrates from the reducing of spring bag card, its body of rod 21-2 hypomere passes the center of a spring Bao Kasan in-flanges, and the extension of spring bag card inserts in the described width of cloth hole 21-3; The interior flanging of described spring bag card bottom is sitting in lower surface in described upper piston 16 cavitys; Upper edge in described upper piston 16 cavitys is provided with annular spring 22, the width of cloth dish 21-1 of tip-lever support is positioned at jump ring 22 times, the described spring bag card 19 outer pressure-stabilizing springs 18 that are set with, these pressure-stabilizing spring 18 lower support are on the flanging 19-4 of spring bag card, and the upper support of pressure-stabilizing spring 18 is below the width of cloth dish 21-1 of tip-lever support; Tip-lever support body of rod 21-2 is set with pressure spring 20 outward in the described spring bag card 19, and the lower support of this pressure spring 20 is on the in-flanges 19-5 of spring bag card, and there is certain distance on the top of pressure spring 20 apart from the width of cloth dish 21-1 lower surface of tip-lever support.
Described valve member contains the lower piston 15 of hollow and is installed in the hollow valve 9 of lower piston 15 bottoms, and the side of described lower piston 15 and following valve body 8 inner chambers is the bearing fit face, and is provided with hermetically-sealed construction, as seal ring among the figure 13; Be provided with retracing spring 12 between the interior table top of the lower surface of lower piston 15 and following valve body 8, and form air chamber, this air chamber is communicated with air gate 19 on the following valve body 8 by the slit between lower piston bottom guide rod 11 and following valve body 8 inside faces; Described valve 9 and lower piston 15 coaxial installations, valve 9 sidepieces are the induction opening 30 of following valve body 8, valve 9 upper surfaces are provided with packing element, as packing seal among the figure 10, there is outer step valve 9 upper ends, and the bottom is provided with the contraction step, and valve 9 bottoms are provided with the plug 2 of hollow, this plug 2 is fixedly mounted on down the bottom of valve body 8, and the contraction step of valve 9 bottoms inserts in the stepped hole of coupling in the plug 2; Be the bearing fit face between the medial surface of the lateral surface of valve 9 and plug 2, and be provided with hermetically-sealed construction, as O type circle 6 among the figure; Valve 9 outer cover are equipped with retracing spring 7, and this retracing spring 7 is supported between plug 2 tops and the valve 9 outer step lower surfaces; This retracing spring 7 supports the packing element of valve 9 upper surfaces and the annular arrangement convex edge 33 formation valves of following valve body 8 inner couplings.
Described plug 2 and following valve body 8 connecting portions are provided with hermetically-sealed construction, as O type circle 5 among the figure.
Described lower piston 15 tops are equipped with by screw thread can adjust thimble 27, and these thimble 27 tops are bottom, described compensating bar 26 two ends for the thimble body is supported on, and the bottom of this thimble is a thread segment, is installed in lower piston top inner chamber.
Described lower piston 15 is installed in down in the valve body 8 by jump ring 28.
Described plug 2 bottoms are equipped with dust-proof cushion 1.
Be provided with lower through-hole 4 in described valve 9 sidewalls, cavity and the contraction step of valve 9 bottoms and the cavity between plug 2 steps under being communicated with respectively between valve body 8 and the lower piston bottom guide rod 11.
Be installed together by fastener 14 between the valve body 8 about described.
Described push rod 24 is the taper push rod, and described tip-lever support 21 inside are provided with the tapered blind hole 21-4 with push rod 24 couplings, are connected with dust protecting cap 23 between described push rod 24 and the upper valve body 25.
When push rod presses down, tip-lever support presses down pressure-stabilizing spring by width of cloth dish and gives upper piston with transmission of pressure, upper piston pressure acts on the steel ball, give two lower pistons by compensating bar with pressure distribution, the descending segment distance of lower piston presses valve and opens valve, be communicated with induction opening and air gate, part air-flow enters air chamber, generation upwards pressure, pass to steel ball by compensating bar, and pass to piston, 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 (9)
1. two-stage stab-braking double-cavity parallel arrangement type brake master valve, contain upper valve body, following valve body, valve body is two under it, be installed in the upper valve body bottom side by side, in upper valve body inside the upper piston assembly is installed, in two following valve bodies, valve member is installed, be connected by compensating bar between described upper piston assembly and the valve member, described upper piston assembly bottom is pressed in the compensating bar middle part by steel ball, described compensating bar two ends are pressed in two valve member tops respectively, it is characterized in that: described upper piston assembly contains the inner upper piston of cavity that is, and be installed in push rod in the upper piston, tip-lever support and spring bag card, described upper piston bottom is stretched out one section and is the described steel ball of pusher body roof pressure, insert in the interior cavity of described pusher body the body of rod lower end of described tip-lever support, periphery, tip-lever support top is circular spoke dish, described spring Bao Kawei drum-shaped structure, 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 a spring Bao Kasan in-flanges, 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 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, described spring bag card is set with pressure-stabilizing spring outward, and this pressure-stabilizing spring lower support is 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 width of cloth dish lower surface of tip-lever support.
2. two-stage stab-braking double-cavity parallel arrangement type brake master valve according to claim 1, it is characterized in that: described valve member contains the lower piston of hollow and is installed in the hollow valve of lower piston bottom, the side of described lower piston and following body cavity is the bearing fit face, and is provided with hermetically-sealed construction; Be provided with retracing spring between the interior table top of the lower surface of lower piston and following valve body, and form air chamber, this air chamber is communicated with air gate on the following valve body by the slit between lower piston bottom guide rod and the following valve interior surface; The coaxial installation of described valve and lower piston, the valve sidepiece is the induction opening of following valve body, the valve upper surface is provided with packing element, there is outer step the valve upper end, the bottom is provided with the contraction step, the valve bottom is provided with the plug of hollow, and this plug is fixedly mounted on down the bottom of valve body, and the contraction step of valve bottom inserts in the stepped hole of coupling in the plug; Between the lateral surface of valve and the medial surface of plug is the bearing fit face, and is provided with hermetically-sealed construction; The valve outer cover is equipped with retracing spring, and this retracing spring is supported between plug top and the outer step lower surface of valve; This retracing spring supports the packing element of valve upper surface and the annular arrangement convex edge formation valve of following valve inner coupling.
3. two-stage stab-braking double-cavity parallel arrangement type brake master valve according to claim 2 is characterized in that: described plug and following valve body connecting portion are provided with hermetically-sealed construction.
4. two-stage stab-braking double-cavity parallel arrangement type brake master valve according to claim 2, it is characterized in that: described lower piston top is equipped with by screw thread can adjust thimble, this thimble top is supported on bottom, described compensating bar two ends for the thimble body, the bottom of this thimble is a thread segment, is installed in lower piston top inner chamber.
5. two-stage stab-braking double-cavity parallel arrangement type brake master valve according to claim 2 is characterized in that: described lower piston is installed in down in the valve body by jump ring.
6. two-stage stab-braking double-cavity parallel arrangement type brake master valve according to claim 2 is characterized in that: described plug bottom is equipped with dust-proof cushion.
7. two-stage stab-braking double-cavity parallel arrangement type brake master valve according to claim 2, it is characterized in that: be provided with lower through-hole in the described valve sidewall, cavity and the contraction step of valve bottom and the cavity between the plug step under being communicated with respectively between valve body and the lower piston bottom guide rod.
8. two-stage stab-braking double-cavity parallel arrangement type brake master valve according to claim 1 is characterized in that: be installed together by fastener between the valve body about described.
9. two-stage stab-braking double-cavity parallel arrangement type brake master valve according to claim 1 is characterized in that: described push rod is the taper push rod, and described tip-lever support inside is provided with the tapered blind hole with the push rod coupling, is connected with dust protecting cap between described push rod and the upper valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101745282A CN101857019B (en) | 2010-05-18 | 2010-05-18 | Two-stage stab-braking double-cavity parallel arrangement type brake master valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101745282A CN101857019B (en) | 2010-05-18 | 2010-05-18 | Two-stage stab-braking double-cavity parallel arrangement type brake master valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101857019A CN101857019A (en) | 2010-10-13 |
| CN101857019B true CN101857019B (en) | 2011-08-10 |
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| CN2010101745282A Expired - Fee Related CN101857019B (en) | 2010-05-18 | 2010-05-18 | Two-stage stab-braking double-cavity parallel arrangement type brake master valve |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104044572A (en) * | 2014-06-24 | 2014-09-17 | 哈尔滨工业大学（威海） | Double-acting electronically-controlled pneumatic braking valve and vehicle braking system |
| CN104192123A (en) * | 2014-08-26 | 2014-12-10 | 王勤黄 | Intelligent air cut valve |
| CN104192132B (en) * | 2014-09-22 | 2016-08-17 | 昌通科技有限公司 | Two grades and three grades of cadence braking master valves |
| CN104192126B (en) * | 2014-09-22 | 2017-07-07 | 昌通科技有限公司 | Three-level point is stopped dummy piston assembly |
| CN104401315B (en) * | 2014-11-10 | 2017-12-15 | 昌通科技有限公司 | For two level of the east wind 140 with filter screen and three-level cadence braking master valve |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1374634A (en) * | 1971-12-31 | 1974-11-20 | Dewandre Co Ltd C | Dual brake valves |
| GB1420149A (en) * | 1973-04-19 | 1976-01-07 | Dewandre Co Ltd C | Dual hydraulic brake valves |
| DE3022435A1 (en) * | 1980-06-14 | 1982-01-07 | Knorr-Bremse GmbH, 8000 München | TWO-CIRCUIT BRAKE VALVE |
| CN2516410Y (en) * | 2001-12-06 | 2002-10-16 | 李彦波 | Double-cavity booster relay valve and its brake pipe system |
| CN2787521Y (en) * | 2004-12-06 | 2006-06-14 | 陈仲明 | Light-load double-chamber brake valve |
| CN2878150Y (en) * | 2005-06-08 | 2007-03-14 | 侯义平 | Semi-automatic automobile braking valve second-level prison capable of changing initial pressure ratio |
| CN100469632C (en) * | 2006-09-22 | 2009-03-18 | 田青锋 | Double chamber parallel electromagnetic control secondary booster automobile brake general pump |
| CN201670228U (en) * | 2010-05-18 | 2010-12-15 | 河南昌通科技有限公司 | Two-stage pulsating-brake main brake valve with double parallel chambers |
-
2010
- 2010-05-18 CN CN2010101745282A patent/CN101857019B/en not_active Expired - Fee Related
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Owner name: CHANGTONG TECHNOLOGY CO., LTD. Free format text: FORMER NAME: HENAN CHANG TONG TECHNOLOGY CO., LTD. |
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Granted publication date: 20110810 Termination date: 20170518 |