CN104192105B - Two grades for big prestige serial band retarder and three-level cadence braking master valve - Google Patents
Two grades for big prestige serial band retarder and three-level cadence braking master valve Download PDFInfo
- Publication number
- CN104192105B CN104192105B CN201410487727.7A CN201410487727A CN104192105B CN 104192105 B CN104192105 B CN 104192105B CN 201410487727 A CN201410487727 A CN 201410487727A CN 104192105 B CN104192105 B CN 104192105B
- Authority
- CN
- China
- Prior art keywords
- valve
- spring
- rod
- grades
- chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Braking Systems And Boosters (AREA)
- Transmission Of Braking Force In Braking Systems (AREA)
Abstract
The invention discloses a kind of two grades and three-level cadence braking master valve for big prestige serial band retarder, including pedal base, upper body, middle body and lower body that sealing is fixed together, dummy piston is set with the top of upper intracoelomic cavity, spring cutting ferrule outer cover is equipped with one-level balancing spring, and internal sleeve is equipped with two grades of balancing springs.The present invention uses upper, annular in-flanges, and the structure of lower annular flanging simplifies the structure of spring cutting ferrule, reduces difficulty of processing and assembly difficulty, can significantly lift the qualification rate of product.Spring cutting ferrule can be by machining straight forming, one-time formed processing can also be carried out by Sheet Metal Forming Technology, process is simple, the retarder set in the present invention can improve braking effect, retro-speed can be adjusted, it is combined with above-mentioned braking structure, reaches more preferable braking effect.
Description
Technical field
It is specifically a kind of for big prestige serial band retarder the present invention relates to the parts technical field of brake valve of car
Two grades and three-level cadence braking master valve.
Background technology
The brake system of truck of the prior art and heavy goods vehicles is too anxious, the bad control of feel, easily causes brake
Piece rapidly heats up, and causes carbonization, directly influences braking effect, and it is too urgent to brake, and can also cause sliding inclined, influences resistance to overturning,
So as to produce insecurity, or unnecessary economic loss.During for these brakes for solving the problems, such as truck, our units are successively
The two-stage cadence braking master valve of proposition and the series of patents of three-level dummy piston assembly, such as A of Publication No. CN 101837774
Patent of invention, can export " secondary points are stopped "." point is stopped " principle can make compressed air, and arteries and veins is formed in the gentle room of control pipeline section
Punching, is applied to brake block, and all wipe a brake block equivalent to instrument per subpulse.Be not only able to accomplish brake hubs with
Brake block is effectively combined, and is largely further improved brake block carbonization or formed adamantine layer, so as to avoid poor stop
Phenomenon occur, reach good braking effect.Critical component in above-mentioned patent is spring cutting ferrule, due to spring cutting ferrule shape
Compare special, processing technology is complicated, it is necessary to be finished on lathe after casting, cost is higher.The precision size of the spring cutting ferrule
It is required that it is high, through checking defect rate very high after manufacture.Further, since each part conformability is poor, also there is mounting process complexity
Problem, test performance is different after installation, and systematicness is poor, has much room for improvement.
The content of the invention
In order to solve the above mentioned problem that existing braking system is present, the present invention proposes a kind of for the two of big prestige series
Level and three-level cadence braking master valve, are reached to simplify structure, reduces cost purpose, and braking is also improved by setting speed bump
Effect.
The technical scheme is that：A kind of band retarder two-stage cadence braking master valve for big prestige series, including step on
Plate, pedal base, tappet and valve, and air inlet and gas outlet, include the pedal that sealing is fixed together successively from top to bottom
Seat, upper body, middle body and lower body, wherein, pedal base central upper portion is set with sliding sleeve, the sealing of sliding sleeve inner chamber upper end and with tappet upper end
Mutually compress；The pedal, in pedal base side, is provided with the pin for coordinating with sliding sleeve upper end and compressing by hinge on pedal
Axle and plain washer；Dummy piston is set with the top of upper intracoelomic cavity, the upper end of dummy piston outwards sets flange, under the flange
Back-moving spring is supported by between surface and upper body intracavity bottom；Dummy piston upper end is docked with plunger cap inner chamber, dummy piston
Top is columnar width disk chamber A, and the cavity shape that the bottom of dummy piston is stretched out is raised for body of rod chamber B；Described tappet
The top of seat is width disk, and bottom is attenuate successively the three sections of step bodies of rod stretched out from width disk, and the first bar is followed successively by from top to down
Body, second body of rod and the 3rd body of rod, in the body of rod chamber B of the hypomere insertion dummy piston bottom of the 3rd body of rod, width disk is by card
Spring is arranged in the width disk chamber A in dummy piston；Spring cutting ferrule is columnar structured, positioned at the width disk chamber A of dummy piston
In, the upper end of spring cutting ferrule is provided with inside and continuous annular upper overturning, and lower end is provided with the lower flange of outside and continuous annular；Bullet
Spring cutting ferrule outer cover is equipped with one-level balancing spring, and one-level balancing spring is supported on the lower surface and the Spring Card collar of plunger cap width disk
Under shape between flange upper surface；Spring cutting ferrule internal sleeve is equipped with two grades of balancing springs, and the lower end of two grades of balancing springs is supported on flat
On the lower surface of weighing apparatus piston width disk chamber A, two grades of external diameters of the upper end of balancing spring are more than annular upper overturning internal diameter, are turned in annular
Side internal diameter is more than or equal to the diameter of first body of rod, diameter of two grades of internal diameters of the upper end of balancing spring less than first body of rod；One-level
The coefficient of elasticity of balancing spring is more than two grades of coefficient of elasticity of balancing spring；Two grades of balancing spring upper ends to the first body of rod lower end
The distance of step surface is L1, and the distance of the step surface of the second body of rod lower end to body of rod chamber B upper surfaces is L3, described Spring Card
The distance between the upper surface of set and width disk lower surface are L2, L1 ＜ L3 ＜ L2；The external diameter and bullet of two grades of described balancing springs
The internal diameter matching of spring cutting ferrule, the internal diameter and the diameter matches of second body of rod of described two grades of balancing springs；Described one-level balance
The internal diameter of spring is matched with the external diameter of spring cutting ferrule；The lower end of the tappet mutually compresses with the central pit hole bottom of plunger cap；
The bottom of intracoelomic cavity is provided with the upper valve wall of annular on described, and the inner chamber of upper valve wall connects with upper gas outlet, upper valve
The exocoel of wall is connected with enterprising gas port；Upper valve and upper valve seat of the sealing shroud equipped with cylindrical shape in upper valve wall inner chamber, on
The upper end of valve is provided with outward flanging and upper valve port compression fit, is supported by between the downside of the outward flanging and upper valve seat
Spring, upper valve seat is fixed in the inner side of upper valve wall by circlip；The lower valve of annular is provided with lower intracoelomic cavity
Wall, the inner chamber of lower valve wall is connected with lower gas outlet, and the exocoel of lower valve wall is connected with lower air inlet；It is close in lower valve wall inner chamber
Lower valve and lower valve gate seat of the big envelope equipped with cylindrical shape, the upper end of lower valve is provided with outward flanging and is compressed with lower valve doorway matches somebody with somebody
Close, spring is supported by between the downside of the outward flanging and lower valve gate seat, lower valve gate seat is fixed in lower valve by circlip
The inner side of wall；Internal sealing shroud is equipped with hollow relay piston, the upper valve group of bottom control of the dummy piston in described
Part is opened and closed, the bottom control lower valve component opening and closing of relay piston；The relay piston be disposed with from top to bottom diameter according to
First pipeline section of secondary increase, the second pipeline section and the 3rd pipeline section, wherein the first pipeline section external diameter is set with upper valve inner wall sealing, second
Pipeline section internal wall sealing suit with, the 3rd pipeline section is set with lower body inner wall sealing, it is described in vivo wall be provided with ring-shaped air chamber,
And middle body side is provided with auxilairy air intake, the auxilairy air intake is connected with ring-shaped air chamber, and the lower end of the ring-shaped air chamber is opened
Mouthful and with second pipeline section and the step surface regional connectivity of the 3rd pipeline section.The inner chamber upper end of the relay piston is provided with air inlet
Mouthful, the body of rod chamber B bottoms of dummy piston are provided with exhaust outlet, the exhaust outlet is connected with the air inlet of relay piston upper end；
In lower valve inner chamber lower end, sealing shroud is equipped with exhaust outlet, and the exhaust outlet center is provided with dust-proof cushion.Between sliding sleeve and pedal base
Fixing has dirt-proof boot.
A kind of band retarder three-level cadence braking master valve for big prestige series, including pedal, pedal base, tappet and valve
Door, and air inlet and gas outlet, include pedal base, upper body, middle body and lower body that sealing is fixed together successively from top to bottom, its
In, pedal base central upper portion is set with sliding sleeve, and sliding sleeve inner chamber upper end seals and mutually compressed with tappet upper end；The pedal passes through
Hinge is provided with the bearing pin and plain washer for coordinating with sliding sleeve upper end and compressing in pedal base side on pedal；In upper intracoelomic cavity
Top be set with dummy piston, the upper end of dummy piston outwards sets flange, the flange lower surface and upper body intracavity bottom it
Between be supported by back-moving spring；Dummy piston upper end is docked with plunger cap inner chamber, and the top of dummy piston is columnar width disk chamber
Room A, the cavity shape that the bottom of dummy piston is stretched out is raised for body of rod chamber B；The top of described plunger cap is width disk, and bottom is
From attenuate successively three sections of step bodies of rod that width disk stretches out, first body of rod, second body of rod and the 3rd body of rod are followed successively by from top to down,
In the body of rod chamber B of the hypomere insertion dummy piston bottom of the 3rd body of rod, width disk is arranged on the width in dummy piston by jump ring
In disk chamber A；Spring cutting ferrule for columnar structured, in the width disk chamber A of dummy piston, the upper end of spring cutting ferrule be provided with to
Interior and continuous annular upper overturning, lower end is provided with the lower flange of outside and continuous annular；Spring cutting ferrule outer cover is flat equipped with one-level
Weighing apparatus spring, one-level balancing spring is supported under the lower surface of plunger cap width disk and Spring Card collar-shaped between flange upper surface；Bullet
Spring cutting ferrule internal sleeve is equipped with two grades of balancing springs, and the lower end of two grades of balancing springs is supported on the following table of dummy piston width disk chamber A
On face, two grades of external diameters of the upper end of balancing spring are more than annular upper overturning internal diameter, and annular upper overturning internal diameter is more than or equal to the first bar
The diameter of body, diameter of two grades of internal diameters of the upper end of balancing spring less than first body of rod；The coefficient of elasticity of one-level balancing spring is big
In two grades of coefficient of elasticity of balancing spring；Three-level balancing spring, two grades of balancing spring upper ends to first are provided with body of rod chamber B
The distance of the step surface of body of rod lower end is L1, and the distance of the step surface of the second body of rod lower end to body of rod chamber B upper surfaces is L3, three
The upper end of level balancing spring to the distance between the 3rd body of rod lower surface be L4, under the upper surface of described spring cutting ferrule and width disk
The distance between surface is L2, L1 ＜ L4 ＜ L3 ＜ L2；Two grades of described external diameters of balancing spring and the internal diameter of spring cutting ferrule
Match somebody with somebody, the internal diameter and the diameter matches of second body of rod of described two grades of balancing springs；The internal diameter and bullet of described one-level balancing spring
The external diameter matching of spring cutting ferrule；The lower end of the tappet mutually compresses with the central pit hole bottom of plunger cap；The intracoelomic cavity on described
Bottom be provided with the upper valve wall of annular, the inner chamber of upper valve wall connects with upper gas outlet, the exocoel of upper valve wall with it is enterprising
Gas port is connected；Upper valve and upper valve seat of the sealing shroud equipped with cylindrical shape in upper valve wall inner chamber, the upper end of upper valve is provided with
Outward flanging and upper valve port compression fit, are supported by spring, upper valve seat between the downside of the outward flanging and upper valve seat
Fixed in the inner side of upper valve wall by circlip；The lower valve wall of annular is provided with lower intracoelomic cavity, lower valve wall
Inner chamber is connected with lower gas outlet, and the exocoel of lower valve wall is connected with lower air inlet；Sealing shroud is equipped with cylinder in lower valve wall inner chamber
The lower valve and lower valve gate seat of body shape, the upper end of lower valve are provided with outward flanging and lower valve doorway compression fit, the outward flanging
Downside and lower valve gate seat between be supported by spring, lower valve gate seat is fixed in the inner side of lower valve wall by circlip；Institute
Internal sealing shroud is equipped with hollow relay piston in stating, and the upper valve member opening and closing of bottom control of the dummy piston, servo is lived
The bottom control lower valve component opening and closing of plug；The relay piston is disposed with the first pipe that diameter increases successively from top to bottom
Section, the second pipeline section and the 3rd pipeline section, wherein the first pipeline section external diameter is set with upper valve inner wall sealing, the second pipeline section internal wall with
Sealing suit, the 3rd pipeline section and lower body inner wall sealing are set with, it is described in vivo wall be provided with ring-shaped air chamber, and set in middle body side
Auxilairy air intake is equipped with, the auxilairy air intake is connected with ring-shaped air chamber, the lower ending opening of the ring-shaped air chamber and with described second
The step surface regional connectivity of pipeline section and the 3rd pipeline section.The inner chamber upper end of the relay piston is provided with air inlet, in dummy piston
Body of rod chamber B bottoms be provided with exhaust outlet, the exhaust outlet is connected with the air inlet of relay piston upper end；Under lower valve inner chamber
End sealing shroud is equipped with exhaust outlet, and the exhaust outlet center is provided with dust-proof cushion.Being fixed between sliding sleeve and pedal base has dirt-proof boot.
The solution have the advantages that：
1st, the present invention is used for two grades of big prestige series and the spring cutting ferrule of three-level cadence braking master valve, is connected using upper, annular
Continuous in-flanges, the structure of the continuous flanging of lower annular simplifies the structure of spring cutting ferrule, substantially reduces difficulty of processing, energy
Enough qualification rates for significantly lifting product.
2nd, spring cutting ferrule can be by machining straight forming in the present invention, it is also possible to carried out once by Sheet Metal Forming Technology
The processing of shaping, process is simple, and less than 1/10th of reduces cost to original paper, while the spring peace inside spring cutting ferrule
The also simple many of dress.
3rd, the retarder set in the present invention can improve braking effect, retro-speed can be adjusted, with the above-mentioned point system of stopping
Dynamic structure is combined, and reaches more preferable braking effect.
Brief description of the drawings
Fig. 1 is present invention band retarder two-stage cadence braking master valve structural representation；
Fig. 2 is the top view of Fig. 1；
Fig. 3 is that secondary points are stopped dummy piston assembly structure schematic diagram；
Fig. 4 is the main structure diagram of spring cutting ferrule；
Fig. 5 is the cross-sectional view of dummy piston；
Fig. 6 is the A-A cross-sectional views of Fig. 4；
Fig. 7 is the main structure diagram of plunger cap；
Fig. 8 is the B-B cross-sectional views of Fig. 7；
Fig. 9 is the structural representation of relay piston；
Figure 10 is middle body structural representation；
Figure 11 is present invention band retarder three-level cadence braking master valve structural representation；
Figure 12 is that three-level point in Figure 11 is stopped dummy piston assembly structure schematic diagram.
The lower valve gate seat of 1. dust-proof cushion, 2. exhaust outlet, 3. circlip 4.O types circle, 5. valve seat 6.O types circle 7. in figure
8. body 14.O type circle 15.O type circles in the relay piston 11.O type circle 12.O types circle 13. of 9. lower valve spring of lower body 10.
The back-moving spring of valve spring 21.O types circle 22. on valve seat 20. on 16. circlip 17.O type circle 18.O types circles 19.
The lower valve of 23. bolt, 24. upper body 28. pedal base, 29. tappet, 30. sliding sleeve, 31. dirt-proof boot, 32. bolt 33.O types circle 34.
The one-level balancing spring of 37. dummy piston of valve, 38. plunger cap 39. on door 35.O types circle 36.（Pre-compressed spring）40. springs
41. 2 grades of balancing spring 42. adjusting screw, 43. locking nut, 44. pedal, 45. slipmat, 46. bearing pins 47. of cutting ferrule are flat
The elastic backing pin of 52. split pin of packing ring 48. split pin, 49. roller, 50. bearing pin, 51. plain washer 53., valve wall on 54.,
55. lower valve walls, the gas outlet air inlet 60. times of 58. auxilairy air intake 59. times gas outlet 61. on 56. enterprising gas ports 57.
The annular housing of three-level balancing spring 62..The pressure of 1001. first 1002. second the 3rd pipeline section of pipeline section 1003. of pipeline section 1004.
The width disk of step surface 3801., 3802. annular grooves, 3803. first bodies of rod, 3804. second bodies of rod, 3805. the 3rd bodies of rod,
The lower flange of 4001. annular upper overturnings, 4002. annulars.
Specific embodiment
Embodiment 1：A kind of band retarder two-stage cadence braking master valve for big prestige series, referring to Fig. 1 and Fig. 2, from upper
And under include sealing pedal base 28, upper body 24, middle body 13 and lower body 8 for being fixed together etc. successively.
Wherein, it is tubulose that the top of pedal base 28 upwardly extends, and its center is set with sliding sleeve 30, in sliding sleeve 30 and pedal base
Being fixed between 28 has dirt-proof boot 31.
Pedal 44 is hinged on the side of pedal base 28 by bearing pin 46, is provided with pedal 44 and matches somebody with somebody combined pressure with the upper end of sliding sleeve 30
Tight bearing pin 50 and plain washer 51.
The inner chamber upper end sealing of sliding sleeve 30 is simultaneously mutually compressed with the upper end of tappet 29, lower end and the plunger cap 39 of tappet 29
Central pit hole bottom mutually compresses.
Dummy piston 37 is set with the inner chamber top of upper body 24, the upper end of dummy piston 37 outwards sets flange, and this is turned over
Back-moving spring 22 is supported by between side lower surface and upper body intracavity bottom；The upper end of dummy piston 37 is with upper body by the spacing of annular
Back-up ring is fixed together, and the upper end of the spacing back-up ring is fixed on upper body inwall by circlip.
Referring to Fig. 4, the top of dummy piston is columnar width disk chamber A, the cavity shape that the bottom of dummy piston is stretched out
Projection is body of rod chamber B.
Referring to Fig. 7 and Fig. 8, the top of plunger cap 38 is width disk 3801, and bottom is to attenuate successively from what width disk 3801 stretched out
Three sections of step bodies of rod, first body of rod 3803, second body of rod 3804 and the 3rd body of rod 3805, the 3rd body of rod are followed successively by from top to down
In the body of rod chamber B of 3805 hypomere insertion dummy piston 37 bottom, the upper end of width disk 3801 is sleeved on balance by jump ring 53
In width disk chamber A in piston 37.
Referring to Fig. 5 and Fig. 6, spring cutting ferrule 40 is columnar structured, in the width disk chamber A of dummy piston 37, spring
The upper end of cutting ferrule 40 is provided with inside and continuous annular upper overturning 4001, and lower end is provided with the lower flange of outside and continuous annular
4002。
Fig. 3 is the structure chart of two-stage cadence braking master valve, and the outer cover of spring cutting ferrule 40 is equipped with one-level balancing spring 39, one-level
Balancing spring 39 be supported under the annular of the lower surface of width disk 3801 of plunger cap 38 and spring cutting ferrule 40 upper surface of flange 4002 it
Between；The internal sleeve of spring cutting ferrule 40 is equipped with two grades of balancing springs 41, and the lower end of two grades of balancing springs 41 is supported on dummy piston 37
On the lower surface of width disk chamber A, two grades of external diameters of the upper end of balancing spring 41 are more than the internal diameter of annular upper overturning 4001, are turned in annular
, more than or equal to the diameter of first body of rod 3803, two grades of internal diameters of the upper end of balancing spring 41 are less than first body of rod for the internal diameter on side 4001
3803 diameter；The coefficient of elasticity of one-level balancing spring 39 is more than two grades of coefficient of elasticity of balancing spring 41；Two grades of balancing springs
41 upper end to the distance of the step surface of the lower end of first body of rod 3803 be L1, the step surface of the lower end of second body of rod 3804 to body of rod chamber
The distance of room B upper surfaces is L3, and the distance between the upper surface of described spring cutting ferrule 40 and lower surface of width disk 3801 are L2,
Meet L1 ＜ L3 ＜ L2.
Also, two grades of external diameters of balancing spring 41 are matched with the internal diameter of spring cutting ferrule 40, two grades of internal diameters of balancing spring 41
With the diameter matches of second body of rod 3804；The internal diameter of described one-level balancing spring 39 is matched with the external diameter of spring cutting ferrule 40；Institute
The central pit hole bottom of the lower end and plunger cap 38 of stating tappet 29 mutually compresses.
Referring to Fig. 1, the bottom of the inner chamber of upper body 24 is provided with the upper valve wall 54 of annular, the inner chamber of upper valve wall 54 with it is upper
Gas outlet 58 is connected, and the exocoel of upper valve wall 54 is connected with enterprising gas port 57；Sealing shroud is equipped with cylinder in the upper inner chamber of valve wall 54
The upper valve 36 and upper valve seat 18 of body shape, the upper end of upper valve 36 are provided with outward flanging and upper valve port compression fit, this to
Spring 20 is supported by between the downside of flanging and upper valve seat 18, upper valve seat 18 is fixed in upper valve wall by circlip
54 inner side.
The lower valve wall 55 of annular is provided with the inner chamber of lower body 8, the inner chamber of lower valve wall 55 connects with lower gas outlet 60,
The exocoel of lower valve wall 55 is connected with lower air inlet 59；Lower valve 34 of the sealing shroud equipped with cylindrical shape in the inner chamber of lower valve wall 55
With lower valve gate seat 7, the upper end of lower valve 34 is provided with outward flanging and lower valve doorway compression fit, and the downside of the outward flanging is with
Spring 9 is supported by between valve seat 7, lower valve gate seat 7 is fixed in the inner side of lower valve wall 55 by circlip.
Hollow relay piston 10, the upper valve group of bottom control of the dummy piston 37 are housed in the inner seal sleeve of middle body 13
Part is opened and closed, the bottom control lower valve component opening and closing of relay piston 10.Referring to Fig. 9, the relay piston 10 is from top to bottom successively
The first pipeline section 1001, the second pipeline section 1002 and the 3rd pipeline section 1003 that diameter increases successively are provided with, wherein the first pipeline section 1001
External diameter and the inner wall sealing of upper valve 36 are set with, and the second pipeline section 1002 is set with the inner wall sealing of middle body 13, the 3rd pipeline section 1003 with
The inner wall sealing suit of lower body 8.Referring to Figure 10, the inwall of middle body 13 is provided with ring-shaped air chamber 62, and is provided with the side of middle body 13
Auxilairy air intake 58, the auxilairy air intake 58 is connected with ring-shaped air chamber 62, the lower ending opening of the ring-shaped air chamber 62 and with it is described
The step surface regional connectivity of the pipeline section 1002 of relay piston 10 second and the 3rd pipeline section 1003.The auxilairy air intake 58 can adjust after
Piston 10, the pressure that regulation bears dummy piston 37 and relay piston 10 reaches optimum state, reaches retarded acting.
The inner chamber upper end of the relay piston 10 in Fig. 1 is provided with air inlet, is set in the body of rod chamber B bottoms of dummy piston 37
Exhaust outlet is equipped with, the exhaust outlet is connected with the air inlet of the upper end of relay piston 10；It is equipped with the inner chamber lower end sealing shroud of lower valve 34
Exhaust outlet 2, the center of exhaust outlet 2 is provided with dust-proof cushion 1.
The course of work：
Plunger cap is descending first under external force, and first one-level balancing spring is acted on, and makes it with the descending of plunger cap
And compress, after the completion of its stroke L1, the first body of rod lower surface of plunger cap and two grades of balancing spring upper-end contacts, then one-level
Balancing spring and two grades of balancing spring cooperations；
In order to further description structure herein is, it is necessary to select suitable one-level balancing spring and two grades of equilibrium bombs
Spring, the rigidity of described one-level balancing spring is more than two grades of rigidity of balancing spring, and the dummy piston assembly is installed rear stage and put down
The lower flange of spring bag card is pressed onto weighing apparatus spring the lower surface of width disk chamber；One-level is first acted on so when plunger cap is descending to put down
Weighing apparatus spring, treats after the completion of the stroke of L1 again while act on firsts and seconds balancing spring, two springs side by side its act on so that
Formation is buffered twice.
Another situation is exactly the spring for selecting length just to be matched with spring bag card internal height as two grades of balances
Spring, need not thus limit two grades of rigidity of balancing spring, can also realize secondary buffer.
Embodiment 2：A kind of band retarder three-level cadence braking master valve for big prestige series, content is basic with embodiment 1
It is identical, it is a difference in that：Referring to Figure 11, secondary points are stopped into dummy piston unit replacement for three-level point is stopped dummy piston assembly.Ginseng
See Figure 12, the three-level point stops dummy piston assembly including dummy piston 37, spring cutting ferrule 40, plunger cap 38, dummy piston 37
Top is columnar width disk chamber A, and the cavity shape that the bottom of dummy piston 37 is stretched out is raised for body of rod chamber B；Described endures
The top of pole socket 38 is width disk, and bottom is attenuate successively the three sections of step bodies of rod stretched out from width disk 3801, from top to down successively
It is first body of rod 3803, second body of rod 3804, the 3rd body of rod 3805, hypomere insertion dummy piston 37 bottom of the 3rd body of rod 3805
Body of rod chamber B in, in the chamber A of width disk 3801 that width disk 3801 is sleeved in dummy piston 37 by jump ring；Described spring
Cutting ferrule 40 is columnar structured, between the step body of rod of plunger cap 38 and the inwall of the chamber A of 37 width disk of dummy piston 3801,
The upper end of spring cutting ferrule 40 is provided with inside and continuous annular upper overturning 4001, and lower end is turned under being provided with outside and continuous annular
Side；The outer cover of spring cutting ferrule 40 is equipped with one-level balancing spring 39, and one-level balancing spring 39 is supported on the width disk 3801 of plunger cap 38
Under the annular of lower surface and spring cutting ferrule 40 between the upper surface of flange 4002；The inwall of spring cutting ferrule 40 and the step of plunger cap 38
Two grades of balancing springs 41 are provided between the body of rod, the lower end of two grades of balancing springs 41 is supported on the chamber A of 37 width disk of dummy piston 3801
Lower surface on, two grades of external diameters of the upper end of balancing spring 41 are less than the annular diameter of upper overturning 4001, in annular upper overturning 4001
Footpath is more than or equal to the diameter of first body of rod 3803, and two grades of internal diameters of the upper end of balancing spring 41 are straight less than first body of rod 3803
Footpath；Three-level balancing spring is provided with body of rod chamber B,
The distance of two grades of upper ends of balancing spring 41 to the step surface of the lower end of first body of rod 3803 is L1, under second body of rod 3804
The step surface at end to body of rod chamber B upper surfaces distance be L3, the upper end to the lower surface of the 3rd body of rod 3805 of three-level balancing spring
The distance between be L4, the distance between the upper surface of described spring cutting ferrule 40 and the lower surface of width disk 3801 are L4, L1 ＜ L4
＜ L3 ＜ L2.If the distance of L2 is too short, L3, L4 and L1 will not work.
Two grades of described external diameters of balancing spring 41 are matched with the internal diameter of spring cutting ferrule 40, two grades of described balancing springs 41
Internal diameter and second body of rod 3804 diameter matches；The internal diameter of described one-level balancing spring 39 and the external diameter of spring cutting ferrule 40
Match somebody with somebody.So one-level balancing spring 39 and two grades of balancing springs 41 all gives axial positioning, it is to avoid its horizontal looseness, it is ensured that work
The stability of work.
The described lower surface of width disk 3801 is provided with annular groove in the outside of first body of rod 3803；The annular groove width and bullet
The width matching of the upper end of spring cutting ferrule 40.So setting annular groove can make more compact structure, reduce the height of whole assembly
Size
Circumferentially face is provided with the annular slot for caving inward for the bottom of the outer surface of described dummy piston 37, the annular snap
Groove inner seal sleeve is equipped with sealing ring.Such that it is able to reduce the thickness of the bottom of dummy piston 37, prevent from forming thin in its casting process
Hole, still causes poorly sealed problem after a polish.
The course of work：
Plunger cap 38 is descending first under external force, and first one-level balancing spring 39 is acted on, and makes it with plunger cap 38
It is descending and compress, after the completion of its stroke L1, the lower end of the 3rd body of rod 3805 of plunger cap 38 contacts with three-level balancing spring, this
When the three-level balancing spring and collective effect of one-level balancing spring 39, after the completion of its L4 stroke, first body of rod of plunger cap 38
3803 lower surfaces and two grades of upper-end contacts of balancing spring 41, now one-level balancing spring 39, three-level balancing spring and two grades are balanced
The cooperation of spring 41；
In order to further description structure herein is, it is necessary to select suitable one-level balancing spring 39 and two grades of equilibrium bombs
Spring 41, the rigidity of described one-level balancing spring 39 is more than two grades of rigidity of balancing spring 41, and the assembly of dummy piston 37 is installed
The lower flange of spring cutting ferrule 40 is pressed onto rear stage balancing spring 39 lower surface of the chamber A of width disk 3801；So in plunger cap 38
One-level balancing spring 39 is first acted on when descending, is treated after the completion of the stroke of L4 again while acting on 39, two grades of one-level balancing spring
Balancing spring 41 and its effect arranged side by side of three-level balancing spring 61.
Another situation is exactly the spring for selecting length just to be matched with the internal height of spring cutting ferrule 40 flat as two grades
Weighing apparatus spring 41, need not thus limit two grades of rigidity of balancing spring 41.
Claims (6)
1. a kind of band retarder two-stage cadence braking master valve for big prestige series, including pedal, tappet and valve, air inlet and
Gas outlet, also including sealing the pedal base being fixed together, upper body, middle body and lower body successively from top to bottom, it is characterized in that：Pedal
Seat central upper portion is set with sliding sleeve, and sliding sleeve inner chamber upper end seals and mutually compressed with tappet upper end；The pedal is cut with scissors by bearing pin
Pedal base side is connected on, the bearing pin and plain washer for coordinating with sliding sleeve upper end and compressing are provided with pedal；On the top of upper intracoelomic cavity
Dummy piston is set with, the upper end of dummy piston outwards sets flange, is supported between the flange lower surface and upper body intracavity bottom
There is back-moving spring；Dummy piston upper end is docked with plunger cap inner chamber, and the top of dummy piston is columnar width disk chamber, balance
The cavity shape that the bottom of piston is stretched out is raised for body of rod chamber；The top of described plunger cap is width disk, and bottom is to be stretched from width disk
Attenuate successively the three sections of step bodies of rod for going out, are followed successively by first body of rod, second body of rod and the 3rd body of rod, the 3rd body of rod from top to down
Hypomere insertion dummy piston bottom body of rod chamber in, width disk is arranged in the width disk chamber in dummy piston by jump ring；
Spring cutting ferrule is columnar structured, and in the width disk chamber of dummy piston, the upper end of spring cutting ferrule is provided with inside and continuous
Annular upper overturning, lower end is provided with the lower flange of outside and continuous annular；Spring cutting ferrule outer cover is equipped with one-level balancing spring, one-level
Balancing spring is supported under the lower surface of plunger cap width disk and Spring Card collar-shaped between flange upper surface；Spring cutting ferrule internal sleeve
Equipped with two grades of balancing springs, the lower end of two grades of balancing springs is supported on the lower surface of dummy piston width disk chamber, two grades of balances
The external diameter of the upper end of spring is more than annular upper overturning internal diameter, and annular upper overturning internal diameter is more than or equal to the diameter of first body of rod, two grades
Diameter of the internal diameter of the upper end of balancing spring less than first body of rod；The coefficient of elasticity of one-level balancing spring is more than two grades of balancing springs
Coefficient of elasticity；Two grades of balancing spring upper ends to the step surface of the first body of rod lower end distance be L1, the platform of the second body of rod lower end
Terrace is L3 to the distance of body of rod chamber upper surface, and the distance between the upper surface of described spring cutting ferrule and width disk lower surface are
L2, L1 ＜ L3 ＜ L2；Two grades of described external diameters of balancing spring are matched with the internal diameter of spring cutting ferrule, two grades of described balancing springs
Internal diameter and second body of rod diameter matches；The internal diameter of described one-level balancing spring is matched with the external diameter of spring cutting ferrule；It is described
The lower end of tappet mutually compresses with the central pit hole bottom of plunger cap；The bottom of intracoelomic cavity is provided with the upper valve of annular on described
Men Bi, the inner chamber of upper valve wall is connected with upper gas outlet, and the exocoel of upper valve wall is connected with enterprising gas port；In upper valve wall inner chamber
Upper valve and upper valve seat of the sealing shroud equipped with cylindrical shape, the upper end of upper valve is provided with outward flanging and is compressed with upper valve port matches somebody with somebody
Close, spring is supported by between the downside of the outward flanging and upper valve seat, upper valve seat is fixed in upper valve by circlip
The inner side of wall；The lower valve wall of annular is provided with lower intracoelomic cavity, the inner chamber of lower valve wall connects with lower gas outlet, lower valve
The exocoel of wall is connected with lower air inlet；Lower valve and lower valve gate seat of the sealing shroud equipped with cylindrical shape in lower valve wall inner chamber, under
The upper end of valve is provided with outward flanging and lower valve doorway compression fit, is supported by between the downside of the outward flanging and lower valve gate seat
Spring, lower valve gate seat is fixed in the inner side of lower valve wall by circlip；In described internal sealing shroud equipped with it is hollow after
Piston, the upper valve member opening and closing of bottom control of the dummy piston, the bottom control lower valve component opening and closing of relay piston；
The relay piston is disposed with the first pipeline section, the second pipeline section and the 3rd pipeline section that diameter increases successively from top to bottom, wherein
First pipeline section external diameter is set with upper valve inner wall sealing, and the second pipeline section internal wall sealing suit with, the 3rd pipeline section is internal with lower
Wall sealing suit, it is described in vivo wall be provided with ring-shaped air chamber, and middle body side is provided with auxilairy air intake, the additional-air inlet
Mouthful connected with ring-shaped air chamber, the lower ending opening of the ring-shaped air chamber and with second pipeline section and the step surface region of the 3rd pipeline section
Connection.
2. two-stage cadence braking master valve according to claim 1, it is characterized in that：The inner chamber upper end of the relay piston is set
There is air inlet, the body of rod cavity bottom of dummy piston is provided with exhaust outlet, the air inlet of the exhaust outlet and relay piston upper end
Connection；In lower valve inner chamber lower end, sealing shroud is equipped with exhaust outlet, and the exhaust outlet center is provided with dust-proof cushion.
3. two-stage cadence braking master valve according to claim 1, it is characterized in that：Being fixed between sliding sleeve and pedal base has anti-
Dirt set.
4. a kind of band retarder three-level cadence braking master valve for big prestige series, including pedal, tappet and valve, air inlet and
Gas outlet, also including sealing the pedal base being fixed together, upper body, middle body and lower body successively from top to bottom, it is characterized in that：Pedal
Seat central upper portion is set with sliding sleeve, and sliding sleeve inner chamber upper end seals and mutually compressed with tappet upper end；The pedal is cut with scissors by bearing pin
Pedal base side is connected on, the bearing pin and plain washer for coordinating with sliding sleeve upper end and compressing are provided with pedal；On the top of upper intracoelomic cavity
Dummy piston is set with, the upper end of dummy piston outwards sets flange, is supported between the flange lower surface and upper body intracavity bottom
There is back-moving spring；Dummy piston upper end is docked with plunger cap inner chamber, and the top of dummy piston is columnar width disk chamber, balance
The cavity shape that the bottom of piston is stretched out is raised for body of rod chamber；The top of described plunger cap is width disk, and bottom is to be stretched from width disk
Attenuate successively the three sections of step bodies of rod for going out, are followed successively by first body of rod, second body of rod and the 3rd body of rod, the 3rd body of rod from top to down
Hypomere insertion dummy piston bottom body of rod chamber in, width disk is arranged in the width disk chamber in dummy piston by jump ring；
Spring cutting ferrule is columnar structured, and in the width disk chamber of dummy piston, the upper end of spring cutting ferrule is provided with inside and continuous
Annular upper overturning, lower end is provided with the lower flange of outside and continuous annular；Spring cutting ferrule outer cover is equipped with one-level balancing spring, one-level
Balancing spring is supported under the lower surface of plunger cap width disk and Spring Card collar-shaped between flange upper surface；Spring cutting ferrule internal sleeve
Equipped with two grades of balancing springs, the lower end of two grades of balancing springs is supported on the lower surface of dummy piston width disk chamber, two grades of balances
The external diameter of the upper end of spring is more than annular upper overturning internal diameter, and annular upper overturning internal diameter is more than or equal to the diameter of first body of rod, two grades
Diameter of the internal diameter of the upper end of balancing spring less than first body of rod；The coefficient of elasticity of one-level balancing spring is more than two grades of balancing springs
Coefficient of elasticity；Three-level balancing spring, step of two grades of balancing spring upper ends to the first body of rod lower end are provided with body of rod chamber
The distance in face is L1, and the distance of the step surface of the second body of rod lower end to body of rod chamber upper surface is L3, three-level balancing spring it is upper
It is L4 to hold to the distance between the 3rd body of rod lower surface, the distance between the upper surface of described spring cutting ferrule and width disk lower surface
It is L2, L1 ＜ L4 ＜ L3 ＜ L2；Two grades of described external diameters of balancing spring are matched with the internal diameter of spring cutting ferrule, and described two grades are put down
Weigh the internal diameter of spring and the diameter matches of second body of rod；The internal diameter of described one-level balancing spring and the external diameter of spring cutting ferrule
Match somebody with somebody；The lower end of the tappet mutually compresses with the central pit hole bottom of plunger cap；The bottom of intracoelomic cavity is provided with ring on described
The upper valve wall of shape, the inner chamber of upper valve wall is connected with upper gas outlet, and the exocoel of upper valve wall is connected with enterprising gas port；Upper valve
Upper valve and upper valve seat of the sealing shroud equipped with cylindrical shape in wall inner chamber, the upper end of upper valve is provided with outward flanging with upper valve
Mouth compression fit, is supported by spring between the downside of the outward flanging and upper valve seat, upper valve seat is fixed by circlip
In the inner side of upper valve wall；The lower valve wall of annular is provided with lower intracoelomic cavity, the inner chamber of lower valve wall connects with lower gas outlet
Logical, the exocoel of lower valve wall is connected with lower air inlet；Lower valve of the sealing shroud equipped with cylindrical shape is with in lower valve wall inner chamber
Valve seat, the upper end of lower valve is provided with outward flanging and lower valve doorway compression fit, downside and the lower valve gate seat of the outward flanging
Between be supported by spring, lower valve gate seat is fixed in the inner side of lower valve wall by circlip；Sealing is set with vivo in described
There are hollow relay piston, the upper valve member opening and closing of bottom control of the dummy piston, the bottom control lower valve of relay piston
Door component opening and closing；The relay piston is disposed with the first pipeline section, the second pipeline section and that diameter increases successively from top to bottom
Three pipeline sections, wherein the first pipeline section external diameter is set with upper valve inner wall sealing, the second pipeline section internal wall sealing suit, the 3rd pipe with
Section and lower body inner wall sealing suit, it is described in vivo wall be provided with ring-shaped air chamber, and middle body side is provided with auxilairy air intake,
The auxilairy air intake is connected with ring-shaped air chamber, the lower ending opening of the ring-shaped air chamber and with second pipeline section and the 3rd pipeline section
Step surface regional connectivity.
5. three-level cadence braking master valve according to claim 4, it is characterized in that：The inner chamber upper end of the relay piston is set
There is air inlet, the body of rod cavity bottom of dummy piston is provided with exhaust outlet, the air inlet of the exhaust outlet and relay piston upper end
Connection；In lower valve inner chamber lower end, sealing shroud is equipped with exhaust outlet, and the exhaust outlet center is provided with dust-proof cushion.
6. three-level cadence braking master valve according to claim 4, it is characterized in that：Being fixed between sliding sleeve and pedal base has anti-
Dirt set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410487727.7A CN104192105B (en) | 2014-09-22 | 2014-09-22 | Two grades for big prestige serial band retarder and three-level cadence braking master valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410487727.7A CN104192105B (en) | 2014-09-22 | 2014-09-22 | Two grades for big prestige serial band retarder and three-level cadence braking master valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104192105A CN104192105A (en) | 2014-12-10 |
| CN104192105B true CN104192105B (en) | 2017-07-07 |
Family
ID=52077539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410487727.7A Expired - Fee Related CN104192105B (en) | 2014-09-22 | 2014-09-22 | Two grades for big prestige serial band retarder and three-level cadence braking master valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104192105B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104691523A (en) * | 2015-03-03 | 2015-06-10 | 罗念宁 | Control pedal |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3038486C2 (en) * | 1980-10-11 | 1988-11-10 | Wabco Westinghouse Fahrzeugbremsen GmbH, 3000 Hannover | Motor vehicle brake valve |
| JPS61163050A (en) * | 1985-01-14 | 1986-07-23 | Sumitomo Electric Ind Ltd | Magnifying device |
| CN101857018B (en) * | 2010-05-18 | 2011-09-14 | 河南昌通科技有限公司 | Two-stage foot braking master valve |
| CN101837774B (en) * | 2010-05-31 | 2013-06-05 | 昌通科技有限公司 | Two-stage cadence braking master valve (type V) |
| CN203920713U (en) * | 2013-12-27 | 2014-11-05 | 芜湖盛力科技股份有限公司 | Braking system of diesel engine of commercial vehicle list chamber Piston Pneumatic Brake Valve |
| CN204172877U (en) * | 2014-09-22 | 2015-02-25 | 昌通科技有限公司 | For secondary and three grades of cadence braking master valves of large prestige serial band retarder |
-
2014
- 2014-09-22 CN CN201410487727.7A patent/CN104192105B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN104192105A (en) | 2014-12-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106671966B (en) | Air shut-off valve and air shut-off valve assembly | |
| CN104192105B (en) | Two grades for big prestige serial band retarder and three-level cadence braking master valve | |
| CN104369731B (en) | Two-stage and three-stage snub brake structure | |
| CN104401313B (en) | For two grades of big prestige serial band filter screen band retarder and three-level cadence braking master valve | |
| CN104260714B (en) | Two level and three-level cadence braking master valve | |
| CN104401316B (en) | For two grades of the band filter screen and three-level cadence braking master valve of big prestige series | |
| CN204172877U (en) | For secondary and three grades of cadence braking master valves of large prestige serial band retarder | |
| CN104401317B (en) | Two grades of five hole of band filter screen and three-level cadence braking master valve for moral dragon series | |
| CN204323318U (en) | For secondary and three grades of cadence braking master valves of large prestige series | |
| CN204323322U (en) | For secondary and three grades of cadence braking master valves of prestige serial band retarder difficult to understand | |
| CN204323323U (en) | For secondary and three grades of some braking structures of east wind 153 | |
| CN204172889U (en) | Liberate 151 secondarys, three grades of cadence braking master valves | |
| CN104192132B (en) | Two grades and three grades of cadence braking master valves | |
| CN104401318B (en) | Delong-series secondary and third snub brake master valve with filter mesh and retarder | |
| CN204323321U (en) | For five hole secondarys and three grades of cadence braking master valves of moral dragon series | |
| CN104401315B (en) | For two level of the east wind 140 with filter screen and three-level cadence braking master valve | |
| CN204172888U (en) | For secondary and three grades of cadence braking master valves of prestige series difficult to understand | |
| CN104354689B (en) | Two grades and three grades of cadence braking master valves | |
| CN104260715B (en) | With retarder two grades and three grades of cadence braking master valves | |
| CN104192131B (en) | With retarder two grades and three grades of cadence braking master valves | |
| CN104260713B (en) | Five two grades of holes and three grades of cadence braking master valves | |
| CN104192124B (en) | Two grades, three grades of cadence braking master valves | |
| CN204323319U (en) | For secondary and three grades of cadence braking master valves of east wind 140 | |
| CN204172896U (en) | The secondary of moral dragon series and three grades of cadence braking master valves | |
| CN104192126B (en) | Three-level point is stopped dummy piston assembly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170707 Termination date: 20200922 |