CN104401316B - For two grades of the band filter screen and three-level cadence braking master valve of big prestige series - Google Patents
For two grades of the band filter screen and three-level cadence braking master valve of big prestige series Download PDFInfo
- Publication number
- CN104401316B CN104401316B CN201410627775.1A CN201410627775A CN104401316B CN 104401316 B CN104401316 B CN 104401316B CN 201410627775 A CN201410627775 A CN 201410627775A CN 104401316 B CN104401316 B CN 104401316B
- Authority
- CN
- China
- Prior art keywords
- rack
- valve
- spring
- annular
- sealing strip
- 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
- 238000007789 sealing Methods 0.000 claims abstract description 123
- 238000005520 cutting process Methods 0.000 claims abstract description 58
- 239000004831 Hot glue Substances 0.000 claims description 16
- 230000006835 compression Effects 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 10
- 238000005303 weighing Methods 0.000 claims description 7
- 238000001746 injection moulding Methods 0.000 claims description 6
- 238000003780 insertion Methods 0.000 claims description 6
- 230000037431 insertion Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 239000007787 solid Substances 0.000 abstract description 8
- 238000009434 installation Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000002245 particle Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000003763 carbonization Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000012943 hotmelt Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- ORILYTVJVMAKLC-UHFFFAOYSA-N adamantane Chemical compound C1C(C2)CC3CC1CC2C3 ORILYTVJVMAKLC-UHFFFAOYSA-N 0.000 description 1
- 229910001573 adamantine Inorganic materials 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000037237 body shape Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
- B60T15/02—Application and release valves
- B60T15/04—Driver's valves
Abstract
The invention discloses a kind of two grades of band filter screen and three-level cadence braking master valve for big prestige series, including pedal base, upper 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；Upper valve seat is fixed in the inner side of upper valve wall by circlip；Lower valve gate seat is fixed in the inner side of lower valve wall by circlip.Valve core filter screen structure is braked in the present invention simple, easy for installation, outside the valve element of the brake valve that can load particularly main brake valve, directly screen pack is arranged on around valve element, the solid housing carried in gas can be avoided to enter in valve element, so as to significantly lift the functional reliability of valve element；Brake accident is avoided to occur.
Description
Technical field
The present invention relates to the parts technical field of brake valve of car, specifically a kind of band filter screen two for big prestige series
Level 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.
Filter is generally provided with the pipeline of brakes at present, for filtering the solid flowed with gas in tracheae
Granule foreign, so as to ensure that each brake component is not influenceed by solid particle polluter, it is ensured that the reliability of its work, but by
In filter apart from the distant of the valve element of each valve, it is impossible to avoid the gas after filtering before valve element is entered again by other
The new solid particle pollution for producing, sometimes still occurs that solid particle enters valve element, influences the sealing of valve element, causes gas leakage
Accident, need to be proposed new solution.
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 band for big prestige series
Two grades of filter screen and three-level cadence braking master valve, reach to simplify structure, reduces cost and and improve the purpose of filter effect.
The technical scheme is that：A kind of two-stage cadence braking master valve for big prestige serial band filter screen, including pedal,
Pedal base, tappet and valve, and air inlet and gas outlet, from top to bottom successively include sealing be fixed together pedal base,
Upper body and lower body, wherein, pedal base central upper portion is set with sliding sleeve, and sliding sleeve inner chamber upper end seals and mutually pressed with tappet upper end
Tightly；The pedal, in pedal base side, is provided with the bearing pin peace for coordinating with sliding sleeve upper end and compressing by hinge on pedal
Packing ring；The top of intracoelomic cavity is set with dummy piston on described, and the upper end of dummy piston outwards sets flange, the flange following table
Back-moving spring is supported by between face and upper body intracavity bottom；Dummy piston upper end is docked with plunger cap inner chamber, dummy piston it is upper
Portion 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 plunger cap
Top be width disk, bottom is attenuate successively the three sections of step bodies of rod stretched out from width disk, be followed successively by from top to down first body of rod,
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 pacified by jump ring
In width disk chamber A in dummy piston；Described spring cutting ferrule is columnar structured, positioned at the width disk chamber of dummy piston
In A, 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；
Spring cutting ferrule outer cover is equipped with one-level balancing spring, and one-level balancing spring is supported on the lower surface and spring cutting ferrule of plunger cap width disk
Between the lower flange upper surface of annular；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
On the lower surface of dummy 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, in annular
Flange 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
The coefficient of elasticity of level 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 be L1, 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
The distance between the upper surface of cutting ferrule and width disk lower surface are L2, L1 ＜ L3 ＜ L2；Described two grades of external diameters of balancing spring with
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 is put down
The internal diameter of weighing apparatus spring is matched with the external diameter of spring cutting ferrule；Mutually pressed with the central pit hole bottom of plunger cap the lower end of the tappet
Tightly；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 door 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,
The upper end of upper valve is provided with outward flanging and upper valve port compression fit, is supported between the downside of the outward flanging and upper valve seat
There is spring, upper valve seat is fixed in the inner side of upper valve wall by circlip；Upper valve core mistake is housed in upper valve wall inner sleeve
Filter screen, the upper valve core screen pack includes the annular end-rack on top and the annular end-rack of bottom, is connected to upper and lower annular end
Support column between frame, on the inside of support column or outside is provided with columnar filter screen, the upper end of the filter screen and the circle on top
End-rack is connected, and the lower end of the filter screen is connected with the annular end-rack of bottom, and the annular end-rack on described top is connected with ring
The cross section of shape is the upper sealing strip edge of wedge shape, and upper surface on sealing strip edge is high outside and low outside in the conical surface on this, upper sealing strip along with
It is flexible connection between the annular end-rack on top；The cross section that the annular end-rack of described bottom is connected with a ring is wedge
The lower sealing strip edge of shape, the lower surface on the lower sealing strip edge is outer low and inner high in the conical surface, and lower sealing strip is along the annular end with bottom
It is flexible connection between frame；The lower valve wall of annular, the inner chamber of lower valve wall and lower outlet are provided with the lower intracoelomic cavity
Mouth connection, the exocoel of lower valve wall is connected with lower air inlet；Lower valve of the sealing shroud equipped with cylindrical shape in lower valve wall inner chamber
With lower valve gate seat, the upper end of lower valve is provided with outward flanging and lower valve doorway compression fit, the downside of the outward flanging and lower valve
Spring is supported by between gate seat, lower valve gate seat is fixed in the inner side of lower valve wall by circlip；In upper valve wall inner sleeve
Equipped with bottom spool screen pack, the bottom spool screen pack includes the annular end-rack on top and the annular end-rack of bottom, is connected to
Support column between upper and lower annular end-rack, on the inside of support column or outside is provided with columnar filter screen, the upper end of the filter screen
It is connected with the circular end-rack on top, the lower end of the filter screen is connected with the annular end-rack of bottom, the annular end on described top
The cross section that frame is connected with a ring is the upper sealing strip edge of wedge shape, and upper surface on sealing strip edge is high outside and low outside in the conical surface on this,
Upper sealing strip is flexible connection along and the annular end-rack on top between；The annular end-rack of described bottom is connected with a ring
Cross section be wedge shape lower sealing strip edge, the lower surface on the lower sealing strip edge is outer low and inner high in the conical surface, and lower sealing strip is along with
It is flexible connection between the annular end-rack in portion；Hollow relay piston is housed in the upper body intracavity bottom sealing shroud, it is described
The upper valve member opening and closing of bottom control of dummy piston, the bottom control lower valve component opening and closing of relay piston；The servo is lived
The inner chamber upper end of plug is provided with air inlet, and the body of rod chamber B bottoms of dummy piston are provided with exhaust outlet, the exhaust outlet and servo
The air inlet connection of 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
Pad.Being fixed between sliding sleeve and pedal base has dirt-proof boot.The annular end-rack on described top, the annular end-rack of bottom, branch
, along the plastic material for being integrated injection molding, described cylindrical filter net is stainless for dagger, upper sealing strip edge, lower sealing strip
Steel matter, the upper end of screen pack and the annular end-rack hot-melt adhesive paste on top, the lower end of screen pack and the annular end-rack of bottom
Hot-melt adhesive paste, side and the support column hot-melt adhesive paste of screen pack.
The cross-sectional width of the connecting portion between described upper sealing strip edge and the annular end-rack on top is W1, top
The cross-sectional width W2, W1 of annular end-rack are not more than the 1/3 of W2；Described lower sealing strip is along and the annular end-rack of bottom between
The cross-sectional width of connecting portion is W3, and the cross-sectional width W4, W3 of the annular end-rack of bottom are not more than the 1/3 of W4.
A kind of three-level cadence braking master valve for big prestige serial band filter screen, including pedal, pedal base, tappet and valve,
And air inlet and gas outlet, include pedal base, upper body and lower body that sealing is fixed together successively from top to bottom, wherein, 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；The intracoelomic cavity on described
Top is set with dummy piston, and the upper end of dummy piston outwards sets flange, between the flange lower surface and upper body intracavity bottom
It is 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
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 be width disk, bottom be from
Three sections of step bodies of rod that what width disk stretched out attenuate successively, are followed successively by first body of rod, second body of rod and the 3rd body of rod from top to down, and
In the body of rod chamber B of the hypomere insertion dummy piston bottom of three bodies of rod, width disk is arranged on the width disk in dummy piston by jump ring
In chamber A；Described spring cutting ferrule is columnar structured, and in the width disk chamber A of dummy piston, the upper end of spring cutting ferrule sets
There is 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 be supported under the lower surface of plunger cap width disk and Spring Card collar-shaped flange upper surface it
Between；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 dummy piston width disk chamber A's
On lower surface, 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
The diameter of one body of rod, diameter of two grades of internal diameters of the upper end of balancing spring less than first body of rod；The elasticity system of one-level balancing spring
Number is more than two grades of coefficient of elasticity of balancing spring；Three-level balancing spring is provided with body of rod chamber B, two grades of balancing spring upper ends are arrived
The distance of the step surface of the first body of rod lower end is L1, and the step surface of the second body of rod lower end is to the distance of body of rod chamber B upper surfaces
The distance between L3, upper end of three-level balancing spring to the 3rd body of rod lower surface are L2, the upper surface of described spring cutting ferrule with
The distance between width disk lower surface is L4, L1 ＜ L2 ＜ L3 ＜ L4；Two grades of described external diameters of balancing spring and spring cutting ferrule
Internal diameter is matched, the internal diameter and the diameter matches of second body of rod of described two grades of balancing springs；Described one-level balancing spring it is interior
Footpath matches 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；On described
The bottom of intracoelomic cavity is provided with the upper valve wall of annular, and the inner chamber of upper valve wall connects with upper gas outlet, the exocoel of upper valve wall
Connected with enterprising gas port；In upper valve wall inner chamber sealing shroud equipped with cylindrical shape upper valve and upper valve seat, upper valve it is upper
End is provided with outward flanging and upper valve port compression fit, and spring is supported by between the downside of the outward flanging and upper valve seat, on
Valve seat is fixed in the inner side of upper valve wall by circlip；Upper valve core screen pack is housed in upper valve wall inner sleeve, on this
Valve element screen pack includes the annular end-rack on top and the annular end-rack of bottom, is connected to the branch between upper and lower annular end-rack
Dagger, on the inside of support column or outside is provided with columnar filter screen, the upper end of the filter screen is connected with the circular end-rack on top, should
The lower end of filter screen is connected with the annular end-rack of bottom, and the cross section that the annular end-rack on described top is connected with a ring is
The upper sealing strip edge of wedge shape, upper surface on sealing strip edge is high outside and low outside in the conical surface on this, and upper sealing strip is along the annular with top
It is flexible connection between end-rack；The cross section that the annular end-rack of described bottom is connected with a ring is the lower sealing strip of wedge shape
Edge, the lower surface on the lower sealing strip edge is outer low and inner high in the conical surface, and lower sealing strip is flexible along and the annular end-rack of bottom between
Connection；The lower valve wall of annular is provided with the 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；Filtered equipped with bottom spool in upper valve wall inner sleeve
Net, the bottom spool screen pack includes the annular end-rack on top and the annular end-rack of bottom, is connected to upper and lower annular end-rack
Between support column, on the inside of support column or outside is provided with columnar filter screen, the upper end of the filter screen and the round nose on top
Frame is connected, and the lower end of the filter screen is connected with the annular end-rack of bottom, and the annular end-rack on described top is connected with a ring
Cross section be wedge shape upper sealing strip edge, upper surface on sealing strip edge is high outside and low outside in the conical surface on this, upper sealing strip along with it is upper
It is flexible connection between the annular end-rack in portion；The cross section that the annular end-rack of described bottom is connected with a ring is wedge shape
Lower sealing strip edge, the lower surface on the lower sealing strip edge is outer low and inner high in the conical surface, and lower sealing strip is along the annular end-rack with bottom
Between for flexible connection；Hollow relay piston, the bottom of the dummy piston are housed in the upper body intracavity bottom sealing shroud
Valve member opening and closing in control, the bottom control lower valve component opening and closing of relay piston；The inner chamber upper end of the relay piston sets
Air inlet is equipped with, the body of rod chamber B bottoms of dummy piston are provided with exhaust outlet, the air inlet of the exhaust outlet and relay piston upper end
Mouth 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.In sliding sleeve and pedal
Being fixed between seat has dirt-proof boot.The annular end-rack on described top, the annular end-rack of bottom, support column, upper sealing strip along,
Lower sealing strip is stainless steel along the plastic material for being integrated injection molding, described cylindrical filter net, screen pack
Upper end and the annular end-rack hot-melt adhesive paste on top, the lower end of screen pack and the annular end-rack hot-melt adhesive paste of bottom, screen pack
Side and support column hot-melt adhesive paste.
The cross-sectional width of the connecting portion between described upper sealing strip edge and the annular end-rack on top is W1, top
The cross-sectional width W2, W1 of annular end-rack are not more than the 1/3 of W2；Described lower sealing strip is along and the annular end-rack of bottom between
The cross-sectional width of connecting portion is W3, and the cross-sectional width W4, W3 of the annular end-rack of bottom are not more than the 1/3 of W4.
The solution have the advantages that：
1st, the present invention is used for the spring cutting ferrule with two grades of filter screen and three-level cadence braking master valve of big prestige series, using top
Annular continuous in-flanges, the structure of the continuous flanging of lower annular simplifies the structure of spring cutting ferrule, difficulty of processing is dropped significantly
It is low, can significantly lift the qualification rate of 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, braking valve core filter screen structure is simple, easy for installation in the present invention, and the brake valve that can load particularly is made
Outside the valve element of dynamic main valve, directly screen pack is arranged on around valve element, the solid housing carried in gas can be avoided to enter
In valve element, so as to significantly lift the functional reliability of valve element；Brake accident is avoided to occur.
Brief description of the drawings
Fig. 1 is two-stage cadence braking master valve structural representation of the present invention；
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 cross-sectional view of dummy piston；
Fig. 5 is the main structure diagram of spring cutting ferrule；
Fig. 6 is the A-A cross-sectional views of Fig. 5；
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 three-level cadence braking master valve structural representation of the present invention；
Figure 10 is that three-level point in Fig. 9 is stopped dummy piston assembly structure schematic diagram；
Figure 11 is the main view cross-sectional view that the utility model brakes valve core screen pack；
Figure 12 is the D-D cross-sectional views in Figure 11；
Figure 13 is the E portions mplifying structure schematic diagram in Figure 11；
Figure 14 is the structural representation after Figure 13 stress deformations.
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. circlip 17.O type circle 18.O types of 9. lower valve spring of lower body, 10. relay piston 11.O type circle 12.O types circle 16.
The pedal base of 24. upper body of valve spring 21.O types circle 22. back-moving spring, 23. bolt 28. on valve seat 20. on circle 19.
Valve 37. is flat on the lower valve 35.O types circle 36. of 29. tappet, 30. sliding sleeve, 31. dirt-proof boot, 32. bolt 33.O types circle 34.
The one-level balancing spring of 38. plunger cap of weighing apparatus piston 39.（Pre-compressed spring）40. 41. 2 grades of spring cutting ferrule balancing springs 42. are adjusted
The roller 50. of 48. split pin of whole screw 43. locking nut, 44. pedal, 45. slipmat, 46. bearing pin, 47. plain washer 49.
The elastic backing pin of 51. plain washer of bearing pin, 52. split pin 53., valve wall on 54., 55. lower valve walls, 56. enterprising gas ports 57.
The annular housing of 61. three-level balancing spring of the upper gas outlet air inlet 60. times of 58. auxilairy air intake 59. times gas outlet 62..
701 is upper sealing strip edge, and 702 is the annular end-rack on top, and 703 is support column, and 704 is screen pack, and 705 is the annular end of bottom
Frame, 706 is lower sealing strip edge, and 701-1 is the upper surface on upper sealing edge.3801. width disks, 3802. annular grooves, 3803. first
The body of rod, 3804. second bodies of rod, 3805. the 3rd bodies of rod, 4001. annular upper overturnings, the lower flange of 4002. annulars.
Specific embodiment
Embodiment 1：A kind of two-stage cadence braking master valve for big prestige serial band filter screen, referring to Fig. 1 and Fig. 2, from upper and
Under include sealing pedal base 28, upper body 24 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.
Sealed bottom in the inner chamber of upper body 13 is set with hollow relay piston 10, the bottom control of the dummy piston 37
Upper valve member opening and closing, the bottom control lower valve component opening and closing of relay piston 10.
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.
Upper valve seat is fixed in the inner side of upper valve wall by circlip；Lower valve gate seat is fixed under by circlip
The inner side of valve wall.Referring to Figure 11-Figure 13, valve element screen pack includes the annular end-rack on top and the annular end-rack of bottom,
The support column 703 between upper and lower annular end-rack is connected to, columnar filter screen is provided with the inner side of support column 703 or outside,
The upper end of the filter screen is connected with the circular end-rack on top, and the lower end of the filter screen is connected with the annular end-rack of bottom, and described is upper
The cross section that the annular end-rack in portion is connected with a ring be the upper sealing strip of wedge shape along 701, on this sealing strip along 701 upper end
Face is high outside and low outside in the conical surface, and upper sealing strip is flexible connection between 701 and the annular end-rack on top；The circle of described bottom
The cross section that annular end-rack is connected with a ring be wedge shape lower sealing strip along 706, the lower sealing strip is along low outside 706 lower surface
Interior high in the conical surface, lower sealing strip is flexible connection between 706 and the annular end-rack of bottom.It is encased in the screen pack 704
During the valve inner of brake valve, upper sealing strip along 701 and lower sealing strip along 706 in the case where the pressure of upper and lower ends is acted on, it is flexible
Connection is deformed, and referring to Figure 14, the conical surface at the two ends after deformation can closely be compressed with other parts fits, and plays the work of sealing
With making other to pass through through filter screen, it is impossible to pass through from two ends, solid particle used can be thus shielded.
The annular end-rack on described top, the annular end-rack of bottom, support column 703, upper sealing strip along 701, under it is close
Edge sealing is stainless steel, screen pack along 706 plastic materials for being integrated injection molding, described cylindrical filter net 704
704 upper end and the annular end-rack hot-melt adhesive paste on top, the lower end of screen pack 704 connect with the annular end-rack hot melt of bottom
Connect, side and the hot-melt adhesive paste of support column 703 of screen pack 704 so can be steady by injection mold one-shot forming, part quality
It is qualitative good, it is easy to the assembling in later stage.
The cross-sectional width of the connecting portion between described upper sealing strip edge and the annular end-rack 702 on top is W1, on
The cross-sectional width W2, W1 of the annular end-rack 702 in portion are not more than the 1/3 of W2；Described lower sealing strip is along the annular end with bottom
The cross-sectional width of the connecting portion between frame 705 is W3, and the cross-sectional width W4 of the annular end-rack 705 of bottom, W3 is not more than
The 1/3 of W4, connecting portion is narrow to be deformed under pressure beneficial to sealing strip edge, more narrow better.
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 three-level cadence braking master valve for big prestige serial band filter screen, content and the basic phase of embodiment 1
Together, it is a difference in that：Referring to Figure 10, secondary points are stopped into dummy piston unit replacement for three-level point is stopped dummy piston assembly.Referring to
Figure 11, the three-level point stops dummy piston assembly including dummy piston 37, spring cutting ferrule 40, plunger cap 38, dummy piston 37 it is upper
Portion 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 tappet
The top of seat 38 is width disk, and bottom is attenuate successively the three sections of step bodies of rod stretched out from width disk 3801, is followed successively by from top to down
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
In body of rod chamber B, in the chamber A of width disk 3801 that width disk 3801 is sleeved in dummy piston 37 by jump ring；Described Spring Card
Set 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, bullet
The upper end of spring 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；
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 following table of the width disk 3801 of plunger cap 38
Under the annular of face and spring cutting ferrule 40 between the upper surface of flange 4002；The inwall of spring cutting ferrule 40 and the step body of rod of plunger cap 38
Between be provided with two grades of balancing springs 41, the lower end of two grades of balancing springs 41 is supported under the chamber A of 37 width disk of dummy piston 3801
On surface, two grades of external diameters of the upper end of balancing spring 41 are less than the annular diameter of upper overturning 4001, and the internal diameter of annular upper overturning 4001 is big
In the diameter equal to first body of rod 3803, diameter of two grades of internal diameters of the upper end of balancing spring 41 less than first body of rod 3803；
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 L2, the distance between the upper surface of described spring cutting ferrule 40 and the lower surface of width disk 3801 are L4, L1 ＜ L2
＜ L3 ＜ L4.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.
Upper valve seat is fixed in the inner side of upper valve wall by circlip；Lower valve gate seat is fixed under by circlip
The inner side of valve wall.Referring to Figure 11-Figure 13, valve element screen pack includes the annular end-rack on top and the annular end-rack of bottom,
The support column 703 between upper and lower annular end-rack is connected to, columnar filter screen is provided with the inner side of support column 703 or outside,
The upper end of the filter screen is connected with the circular end-rack on top, and the lower end of the filter screen is connected with the annular end-rack of bottom, and described is upper
The cross section that the annular end-rack in portion is connected with a ring be the upper sealing strip of wedge shape along 701, on this sealing strip along 701 upper end
Face is high outside and low outside in the conical surface, and upper sealing strip is flexible connection between 701 and the annular end-rack on top；The circle of described bottom
The cross section that annular end-rack is connected with a ring be wedge shape lower sealing strip along 706, the lower sealing strip is along low outside 706 lower surface
Interior high in the conical surface, lower sealing strip is flexible connection between 706 and the annular end-rack of bottom.It is encased in the screen pack 704
During the valve inner of brake valve, upper sealing strip along 701 and lower sealing strip along 706 in the case where the pressure of upper and lower ends is acted on, it is flexible
Connection is deformed, and referring to Figure 14, the conical surface at the two ends after deformation can closely be compressed with other parts fits, and plays the work of sealing
With making other to pass through through filter screen, it is impossible to pass through from two ends, solid particle used can be thus shielded.
The annular end-rack on described top, the annular end-rack of bottom, support column 703, upper sealing strip along 701, under it is close
Edge sealing is stainless steel, screen pack along 706 plastic materials for being integrated injection molding, described cylindrical filter net 704
704 upper end and the annular end-rack hot-melt adhesive paste on top, the lower end of screen pack 704 connect with the annular end-rack hot melt of bottom
Connect, side and the hot-melt adhesive paste of support column 703 of screen pack 704 so can be steady by injection mold one-shot forming, part quality
It is qualitative good, it is easy to the assembling in later stage.
The cross-sectional width of the connecting portion between described upper sealing strip edge and the annular end-rack 702 on top is W1, on
The cross-sectional width W2, W1 of the annular end-rack 702 in portion are not more than the 1/3 of W2；Described lower sealing strip is along the annular end with bottom
The cross-sectional width of the connecting portion between frame 705 is W3, and the cross-sectional width W4 of the annular end-rack 705 of bottom, W3 is not more than
The 1/3 of W4, connecting portion is narrow to be deformed under pressure beneficial to sealing strip edge, more narrow better.
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
Its effect side by side of balancing spring 41 and three-level balancing spring.
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 (10)
1. a kind of two-stage cadence braking master valve for big prestige serial band filter screen, including pedal, tappet and valve, and air inlet
And gas outlet, include pedal base, upper body and lower body that sealing is fixed together successively from top to bottom, it is characterized in that：On pedal base
Portion's center is equipped with sliding sleeve, and sliding sleeve inner chamber upper end seals and mutually compressed with tappet upper end；The pedal is existed by hinge
Pedal base side, is provided with the bearing pin and plain washer for coordinating with sliding sleeve upper end and compressing on pedal；The top of intracoelomic cavity on described
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 A, is put down
The cavity shape that the bottom of weighing apparatus 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 width disk
Attenuate successively the three sections of step bodies of rod for stretching out, are followed successively by first body of rod, second body of rod and the 3rd body of rod, the 3rd bar from top to down
In the body of rod chamber B of the hypomere insertion dummy piston bottom of body, width disk is arranged on the width disk chamber A in dummy piston by jump ring
It is interior；Spring cutting ferrule is columnar structured, and in the width disk chamber A of dummy piston, the upper end of spring cutting ferrule is provided with inwardly and connects
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；In spring cutting ferrule
Portion is set with two grades of balancing springs, and the lower end of two grades of balancing springs is supported on the lower surface of dummy piston width disk chamber A, two grades
The external diameter of the upper end of balancing 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,
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 more than two grades of balances
The coefficient of elasticity of spring；Two grades of balancing spring upper ends to the step surface of the first body of rod lower end distance be L1, the second body of rod lower end
Step surface to the distance of body of rod chamber B upper surfaces be L3, between the upper surface of described spring cutting ferrule and width disk lower surface
Distance is L2, L1 ＜ 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；Upper valve core screen pack is housed in upper valve wall inner sleeve, the upper valve core screen pack includes the circle on top
Annular end-rack and the annular end-rack of bottom, are connected to the support column between upper and lower annular end-rack, on the inside of support column or
Outside is provided with columnar filter screen, and the upper end of the filter screen is connected with the circular end-rack on top, the lower end of the filter screen and the circle of bottom
Annular end-rack connection, the cross section that the annular end-rack on described top is connected with a ring is wedge-shaped upper sealing strip edge, should
The upper surface on upper sealing strip edge is high outside and low outside in the conical surface, and upper sealing strip is flexible connection along and the annular end-rack on top between；
The cross section that the annular end-rack of described bottom is connected with a ring is the lower sealing strip edge of wedge shape, under the lower sealing strip edge
End face is outer low and inner high in the conical surface, and lower sealing strip is flexible connection along and the annular end-rack of bottom between；In the lower intracoelomic cavity
In be provided with the lower valve wall of annular, the inner chamber of lower valve wall connects with lower gas outlet, the exocoel of lower valve wall and lower air inlet
Connection；Lower valve and lower valve gate seat of the sealing shroud equipped with cylindrical shape in lower valve wall inner chamber, the upper end of lower valve is provided with outwards
Flange and lower valve doorway compression fit, are supported by spring between the downside of the outward flanging and lower valve gate seat, lower valve gate seat passes through
Circlip is fixed in the inner side of lower valve wall；Bottom spool screen pack, the bottom spool screen pack are housed in upper valve wall inner sleeve
The annular end-rack of annular end-rack and bottom including top, is connected to the support column between upper and lower annular end-rack, in branch
Dagger inner side or outside are provided with columnar filter screen, and the upper end of the filter screen is connected with the circular end-rack on top, under the filter screen
End is connected with the annular end-rack of bottom, and the cross section that the annular end-rack on described top is connected with a ring is the upper of wedge shape
Sealing strip edge, upper surface on sealing strip edge is high outside and low outside in the conical surface on this, and upper sealing strip is along and the annular end-rack on top between
It is flexible connection；The cross section that the annular end-rack of described bottom is connected with a ring is the lower sealing strip edge of wedge shape, under this
The lower surface on sealing strip edge is outer low and inner high in the conical surface, and lower sealing strip is flexible connection along and the annular end-rack of bottom between；
The upper body intracavity bottom sealing shroud is equipped with hollow relay piston, and the upper valve member of bottom control of the dummy piston is opened
Close, the bottom control lower valve component opening and closing of relay piston.
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 chamber B bottoms of dummy piston are 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. two-stage cadence braking master valve according to claim 1, it is characterized in that：The annular end-rack on described top, under
Annular end-rack, support column, upper sealing strip edge, the lower sealing strip in portion are described along the plastic material for being integrated injection molding
Cylindrical filter net is stainless steel, the upper end of screen pack and the annular end-rack hot-melt adhesive paste on top, the lower end of screen pack
With the annular end-rack hot-melt adhesive paste of bottom, side and the support column hot-melt adhesive paste of screen pack.
5. two-stage cadence braking master valve according to claim 1, it is characterized in that：Described upper sealing strip is along the ring with top
The cross-sectional width of the connecting portion between shape end-rack is W1, and the cross-sectional width W2, W1 of the annular end-rack on top are not more than W2
1/3；The cross-sectional width of the connecting portion between described lower sealing strip edge and the annular end-rack of bottom is W3, the ring of bottom
The cross-sectional width W4, W3 of shape end-rack are not more than the 1/3 of W4.
6. a kind of three-level cadence braking master valve for big prestige serial band filter screen, including pedal, tappet and valve, and air inlet
And gas outlet, include pedal base, upper body and lower body that sealing is fixed together successively from top to bottom, it is characterized in that：On pedal base
Portion's center is equipped with sliding sleeve, and sliding sleeve inner chamber upper end seals and mutually compressed with tappet upper end；The pedal is existed by hinge
Pedal base side, is provided with the bearing pin and plain washer for coordinating with sliding sleeve upper end and compressing on pedal；The top of intracoelomic cavity on described
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 A, is put down
The cavity shape that the bottom of weighing apparatus 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 width disk
Attenuate successively the three sections of step bodies of rod for stretching out, are followed successively by first body of rod, second body of rod and the 3rd body of rod, the 3rd bar from top to down
In the body of rod chamber B of the hypomere insertion dummy piston bottom of body, width disk is arranged on the width disk chamber A in dummy piston by jump ring
It is interior；Spring cutting ferrule is columnar structured, and in the width disk chamber A of dummy piston, the upper end of spring cutting ferrule is provided with inwardly and connects
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；In spring cutting ferrule
Portion is set with two grades of balancing springs, and the lower end of two grades of balancing springs is supported on the lower surface of dummy piston width disk chamber A, two grades
The external diameter of the upper end of balancing 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,
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 more than two grades of balances
The coefficient of elasticity of spring；Three-level balancing spring, two grades of balancing spring upper ends to the first body of rod lower end are provided with body of rod chamber B
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, three-level balancing spring
Upper end to the distance between the 3rd body of rod lower surface be L2, between the upper surface of described spring cutting ferrule and width disk lower surface
Distance is L4, L1 ＜ L2 ＜ L3 ＜ L4；Two grades of described external diameters of balancing spring are matched with the internal diameter of spring cutting ferrule, and described two
The internal diameter and the diameter matches of second body of rod of level balancing spring；The internal diameter of described one-level balancing spring and the external diameter of spring cutting ferrule
Matching；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 described
The upper valve wall of annular, 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 Men Bi inner chambers, the upper end of upper valve is provided with outward flanging and upper valve
Doorway compression fit, is supported by spring between the downside of the outward flanging and upper valve seat, upper valve seat passes through circlip card
Gu in the inner side of upper valve wall；Upper valve core screen pack is housed in upper valve wall inner sleeve, the upper valve core screen pack includes top
Annular end-rack and the annular end-rack of bottom, are connected to the support column between upper and lower annular end-rack, on the inside of support column or
Person outside is provided with columnar filter screen, and the upper end of the filter screen is connected with the circular end-rack on top, lower end and the bottom of the filter screen
Annular end-rack is connected, and the cross section that the annular end-rack on described top is connected with a ring is wedge-shaped upper sealing strip edge,
Upper surface on sealing strip edge is high outside and low outside in the conical surface on this, and upper sealing strip is flexible company along and the annular end-rack on top between
Connect；The cross section that the annular end-rack of described bottom is connected with a ring is the lower sealing strip edge of wedge shape, the lower sealing strip edge
Lower surface it is outer low and inner high in the conical surface, lower sealing strip is flexible connection along and the annular end-rack of bottom between；In the lower body
The lower valve wall of annular is provided with inner chamber, the inner chamber of lower valve wall connects with lower gas outlet, and the exocoel of lower valve wall enters with
Gas port is connected；Lower valve and lower valve gate seat of the sealing shroud equipped with cylindrical shape in lower valve wall inner chamber, the upper end of lower valve is provided with
Outward flanging and lower valve doorway compression fit, are supported by spring, lower valve gate seat between the downside of the outward flanging and lower valve gate seat
Fixed in the inner side of lower valve wall by circlip；Bottom spool screen pack, the bottom spool mistake are housed in upper valve wall inner sleeve
Filter screen includes the annular end-rack on top and the annular end-rack of bottom, is connected to the support column between upper and lower annular end-rack,
On the inside of support column or outside is provided with columnar filter screen, the upper end of the filter screen is connected with the circular end-rack on top, the filter screen
Lower end be connected with the annular end-rack of bottom, the cross section that the annular end-rack on described top is connected with a ring is wedge shape
Upper sealing strip edge, upper surface on sealing strip edge is high outside and low outside in the conical surface on this, and upper sealing strip is along the annular end-rack with top
Between for flexible connection；The cross section that the annular end-rack of described bottom is connected with a ring is the lower sealing strip edge of wedge shape,
The lower surface on the lower sealing strip edge is outer low and inner high in the conical surface, and lower sealing strip is flexible company along and the annular end-rack of bottom between
Connect；Hollow relay piston, the upper valve group of bottom control of the dummy piston are housed in the upper body intracavity bottom sealing shroud
Part is opened and closed, the bottom control lower valve component opening and closing of relay piston.
7. three-level cadence braking master valve according to claim 6, it is characterized in that：The inner chamber upper end of the relay piston is set
There is air inlet, the body of rod chamber B bottoms of dummy piston are 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.
8. three-level cadence braking master valve according to claim 6, it is characterized in that：Being fixed between sliding sleeve and pedal base has anti-
Dirt set.
9. three-level cadence braking master valve according to claim 6, it is characterized in that：The annular end-rack on described top, under
Annular end-rack, support column, upper sealing strip edge, the lower sealing strip in portion are described along the plastic material for being integrated injection molding
Cylindrical filter net is stainless steel, the upper end of screen pack and the annular end-rack hot-melt adhesive paste on top, the lower end of screen pack
With the annular end-rack hot-melt adhesive paste of bottom, side and the support column hot-melt adhesive paste of screen pack.
10. three-level cadence braking master valve according to claim 6, it is characterized in that：Described upper sealing strip edge and top
The cross-sectional width of the connecting portion between annular end-rack is W1, and the cross-sectional width W2 of the annular end-rack on top, W1 is not more than
The 1/3 of W2；The cross-sectional width of the connecting portion between described lower sealing strip edge and the annular end-rack of bottom is W3, bottom
The cross-sectional width W4, W3 of annular end-rack are not more than the 1/3 of W4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410627775.1A CN104401316B (en) | 2014-11-10 | 2014-11-10 | For two grades of the band filter screen and three-level cadence braking master valve of big prestige series |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410627775.1A CN104401316B (en) | 2014-11-10 | 2014-11-10 | For two grades of the band filter screen and three-level cadence braking master valve of big prestige series |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104401316A CN104401316A (en) | 2015-03-11 |
| CN104401316B true CN104401316B (en) | 2017-07-07 |
Family
ID=52639009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410627775.1A Expired - Fee Related CN104401316B (en) | 2014-11-10 | 2014-11-10 | For two grades of the band filter screen and three-level cadence braking master valve of big prestige series |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104401316B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19815599A1 (en) * | 1997-04-09 | 1998-10-22 | Aisin Seiki | Electromagnetic vehicle brake valve with coil and piston assemblies |
| CN201511956U (en) * | 2009-08-12 | 2010-06-23 | 瑞立集团瑞安汽车零部件有限公司 | Groove-shaped structural master brake valve with filter |
| CN101837774A (en) * | 2010-05-31 | 2010-09-22 | 河南昌通科技有限公司 | 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 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09164942A (en) * | 1995-12-15 | 1997-06-24 | Jidosha Kiki Co Ltd | Brake valve |
| JPH09175379A (en) * | 1995-12-28 | 1997-07-08 | Jidosha Kiki Co Ltd | Brake valve |
| CN2913111Y (en) * | 2006-07-12 | 2007-06-20 | 瑞立集团有限公司 | Multifunctional automobile braking valve |
| CN201816582U (en) * | 2010-05-31 | 2011-05-04 | 河南昌通科技有限公司 | Secondary snub brake main valve |
| CN204250025U (en) * | 2014-11-10 | 2015-04-08 | 昌通科技有限公司 | For band filter screen secondary and three grades of cadence braking master valves of large prestige series |
-
2014
- 2014-11-10 CN CN201410627775.1A patent/CN104401316B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19815599A1 (en) * | 1997-04-09 | 1998-10-22 | Aisin Seiki | Electromagnetic vehicle brake valve with coil and piston assemblies |
| CN201511956U (en) * | 2009-08-12 | 2010-06-23 | 瑞立集团瑞安汽车零部件有限公司 | Groove-shaped structural master brake valve with filter |
| CN101837774A (en) * | 2010-05-31 | 2010-09-22 | 河南昌通科技有限公司 | 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104401316A (en) | 2015-03-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104401316B (en) | For two grades of the band filter screen and three-level cadence braking master valve of big prestige series | |
| CN104401313B (en) | For two grades of big prestige serial band filter screen band retarder and three-level cadence braking master valve | |
| CN104192105B (en) | Two grades for big prestige serial band retarder and three-level cadence braking master valve | |
| CN104401317B (en) | Two grades of five hole of band filter screen and three-level cadence braking master valve for moral dragon series | |
| CN104401315B (en) | For two level of the east wind 140 with filter screen and three-level cadence braking master valve | |
| CN104369731B (en) | Two-stage and three-stage snub brake structure | |
| CN104260714B (en) | Two level and three-level cadence braking master valve | |
| CN104401318B (en) | Delong-series secondary and third snub brake master valve with filter mesh and retarder | |
| CN204250025U (en) | For band filter screen secondary and three grades of cadence braking master valves of large prestige series | |
| CN204250028U (en) | For the secondary of east wind 140 with filter screen and three grades of cadence braking master valves | |
| CN204250031U (en) | For prestige serial band filter screen band retarder secondary difficult to understand and three grades of cadence braking master valves | |
| CN104401314B (en) | Delong-series secondary and third snub brake master valve with filter mesh | |
| CN204250023U (en) | The secondary of moral dragon serial band filter screen and three grades of cadence braking master valves | |
| CN104386054B (en) | Two grades and three grades some braking structures of band filter screen | |
| CN204250029U (en) | For band filter screen five hole secondary and three grades of cadence braking master valves of moral dragon series | |
| CN104401319B (en) | Main brake valve with screen pack | |
| CN104442788B (en) | Two grades and three grades cadence braking master valves of band filter screen for prestige series difficult to understand | |
| CN204172877U (en) | For secondary and three grades of cadence braking master valves of large prestige serial band retarder | |
| CN104386053B (en) | Two grades and three grades cadence braking master valves of band filter screen band retarder | |
| CN204250030U (en) | For band filter screen secondary and three grades of cadence braking master valves of prestige series difficult to understand | |
| CN204172888U (en) | For secondary and three grades of cadence braking master valves of prestige series difficult to understand | |
| CN104401311B (en) | Jianghuai main brake valve provided with filter screen | |
| CN204323320U (en) | The secondary of moral dragon serial band retarder and three grades of cadence braking master valves | |
| CN204323322U (en) | For secondary and three grades of cadence braking master valves of prestige serial band retarder difficult to understand | |
| CN204250019U (en) | The main brake valve of liberation 141 band filtering net |
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 | ||
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20180508 Granted publication date: 20170707 |
|
| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20200508 Granted publication date: 20170707 |
|
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20200508 Granted publication date: 20170707 |
|
| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20220508 Granted publication date: 20170707 |
|
| 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: 20201110 |