• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    In a fluid-pressure operated anti-skid braking system operation of a brake-applying relay valve (30) is controlled by control pressure in an application chamber (23). A memory chamber (8) is charged on initial brake application, with pressure from a supply passage (44) connected to a brake actuator (3) through a one-way valve (60) and an orifice (64) permits pressure in the memory chamber (8) to decay when the pressure in the supply passage (44) reduces. This reduces the effective volume of air required for initial operation of the relay valve thereby increasing its response time. Re-application of the brakes following a skid is controlled by closure of a latch valve (9) which permits only a restricted flow of control pressure into the application chamber (23). This is sufficient to re-apply the brakes rapidly in a first stage until the pressure in the application chamber (23) becomes equal to that of the decayed pressure in the memory chamber (8), whereafter brake re-application continues at a slower rate since the restricted flow of control pressure has also to increase the pressure in the memory chamber (8).
    公开号:SU1531846A3
    申请号:SU853955600
    申请日:1985-09-06
    公开日:1989-12-23
    发明作者:Джон Макканн Денис
    申请人:Лукас Индастриз Паблик Лимитед Компани (Фирма)；
    IPC主号:
    专利说明:

    I
    (21) 3955600 / 25-11
    (22) 09/06/85
    (31) 8422711
    (32) 09/07/84
    (33) GB
    (46) 12/23/89. Bup. Number 47
    (71) Lucas Industries Public Limit Company (GB)
    (72) Denis John McCann (NE)
    (53) 629.113-59 (088.8)
    (56) UK application
    No. 2002471, cl. B 60 T 8/02, 1979.
    (54) PNEUMATIC ANTI-BLOCK BRAKE VEHICLE SYSTEM
    (57) The invention relates to the automotive industry. The purpose of the invention is to increase the efficiency of the system. The operation of the relay valve 35 is regulated when pressure control in the
    chamber 23. The storage chamber 8 is connected at the initial activation of the i brake with the overflow chamber 48 connected to the power chamber 3 by a check valve 49. Throttle channel 53 reduces the pressure in chamber 8 when the pressure in chamber 48 decreases. This reduces the effective air volume required for initial activation of valve 35, thereby increasing its response time. Repeated braking during sliding is controlled by closing the shut-off valve) 1a 9, which facilitates the pouring of a limited flow of control pressure into the chamber 23. This is sufficient for; reapply the brakes quickly in the first stage until the pressure in chamber 23 becomes equal
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    : have a disease in chamber 8, after. opii ie brake activation pro i With a slower speed
    This invention relates to the automotive industry.
    The invention of the invention is an increase in the efficiency of the TiiHi ocTH system.
    11.1 of FIG. presents the pressure modulator with the normal position of the brake, cross section; figure 2 - then, when the release; fig.Z - the same, with the flow of compressed air through the throttle XTnal; 4 is the same in the first stage of re-applying the brake; fig. 3 - the same, with the repeated stage of the secondary application of the brake; figure 6 - valve site; Fig. 7 is a modification of the valve assembly with an open throttle; on Fig - the same, with a closed choke; Fig. 9 is a modification of the valve assembly; in FIG. Y - the same, with the throttle closed; figure 11 - modulator, option, cross-section.
    In the brake system (Figures 1-5), the pressure modulator 1 is able to regulate the flow of the pneumatic medium from the receiver 2 to the power chamber 3 of the brake mechanism 4.
    The modulator 1 comprises a housing 5, containing. This is the first inlet inlet channel 6, connected to the brake valve 7, controlled by a pedal, the memory chamber 8 and the stop valve 9, which regulates the connection between the windows 11 and 11 separated from each other in channel fS. The check valve 9 contains a valve element 12 for mating with the socket 13 surrounding the window 10, and rests on an elastic diaphragm 14. The element 12 is provided with a nozzle hole 15 providing limited flow into the chamber 16 above the diaphragm 14, which passes across even when the shut-off valve 9 is closed, to interrupt the flow through the supply channel 6 with the exception of the channel formed by the gap 17 in the element 12, the Chamber 16 is also in communication with the supply channel through the one-way valve 18.
    A solenoid valve 19 responsive to an electrical signal, as well as the limited flow of regulating pressure, should also lead to an increase in pressure in the chamber of 8.11 Il.
    The lapse from the deceleration sensors of the braked wheel and including the regulating module contains a bolt 20, which contacts alternately with the first and second saddles 21 and 22, which are separated from one another by some distance. The first saddle 21 is located between the supply channel 6 and the control chamber 23, and the second saddle 22 is located between the chamber 23 and the exhaust channel 24. The volume of the chamber 23 is small compared with the volume of the storage chamber 8.
    When the winding is de-energized during normal braking, the shutter 20 contacts the seat 22. The lead channel 6 communicates with the chamber 23 through the open shut-off valve 9, and a weak spring 25 acts on the element 12 to keep the shut-off valve 9 open. with the help of an operator, the adjustment pressure is conducted to the chamber 23 through the check valve 9 and the supply channel 6, and the check valve 9 will remain open, since the same pressure acts on the opposite sides of the diaphragm 14.
    1 The valve assembly 26 controls the communication between the chamber 23 and the storage chamber 8. The node 26 contains a hollow piston 27 of stepped shape mounted in a bore hole 28. The latter has a piston head 29 having a larger diameter and provided with axially spaced channels 30, which are usually closed with a plate valve 31, resting on the outer surface of the head 29. The spring 32 acts on the piston 27 so that the plate valve 31 is pressed against the surface
    33c of the inner side of the bore hole 28 and seals the channels 30 in order to isolate the storage chamber 8 from the chamber 23. O-ring seal
    34 of the elastic material provides a seal between the wall of the bore hole 28 and the portion of the piston 27 having a smaller diameter.
    5153
    The R housing 1 also houses a means for regulating the fluid breakdown, containing a relay valve 35dl for regulating the communication between the inlet conductive channel 36 and the outlet channel 37 connected to the chamber 3.
    The valve 35 contains a bore hole of the stepped profile and a piston 38, bounding the lower side of the chamber 23, is located 1P.1J in the inner part of the bore hole 39. having a larger diameter. The head of the borehole DO from the side of the piston 38, which is opposite to the chamber 23, can contact the inner end of the sleeve 41, and the latter moves, as if by a guide, in the longitudinal cup 42 of the locking member 43 of the outer end of the bore hole 39 protruding inward, having P1 smaller the diameter of the sleeve 41 is provided with a radial collar forming the head 44 of the claian, which is pressed inward in the direction of the eopleych 45 on the ledge in the area of the diameter change by means of the compression spring 46, and the locking member
    43 is equipped with at least one. an outlet 47. communicating t the internal cavity of the sleeve. . The input channel 36 is located on the same side of the shoulder 45 as the head
    44klapa 1a, and the output channel 37 - from its counter-lug) side. Thus, in the off position (Fig. 1), the communication between the inlet channel 36 and the overflow chamber 48 is interrupted by contact of the head 44 with the shoulder 45, and this chamber communicates with the atmosphere through the opening 47, since the shutter 40 is removed from the sleeve 41.
    The chamber 48 is connected to the memory chamber 8 via a check valve 49 containing a shut-off member 50, which lands in the direction of the saddle 51 in the housing 5 by means of a spring 52. A recess 51 is provided in the saddle 51 to form a throttle channel 53 determining the rate of pressure increase in pressure the storage chamber B in the case when the valve 49 is closed by the locking member 50 due to the mating with the seat 51.
    When not in use and when it is necessary to turn on the brake
    The bolt 20 is brought into contact with the seat 22c by a spring 25, which acts on the bore 54.
    18.
    20 . -25
    0
    40
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    55.
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    isolates the camera 23 from the atmosphere. In addition, the check valve 9 is held in the open position by the spring 55. The regulating pressure from the brake valve 7 is supplied from the inlet supply channel 6 to the chamber 23 of the relay valve 35 through the check valve 9, which remains in the open position, since on the opposite sides of the diaphragm 14 the pressure is the same. The pressure in the chamber 23 also acts on the piston 27 in the direction of the surface 22, which increases the ycHJnie in the spring 32. This ensures good contact of the plate valve 31 with the surface 33. The pressure in the chamber 23 acts on the piston 38 by moving it down, resulting in the shutter 40 is in contact with the upper end of the sleeve 41 in order to separate the chamber 48 from the atmosphere. After that, the subsequent movement of the piston 38 in the same direction will move the head 44 from the shoulder 45, so that the brakes are actuated by pressure from channel 36, which communicates with output channel 37 through chamber 48 and with memory g camera 8 through valve 49. In memory chamber B is therefore applied brake pressure.
    When the pressure in the chamber 23 is removed (Fig. 2) with the help of a valve 7 for its release from through the channel 6 and the adjustment hole 56.
    The valve 35 responds to this reduction in pressure regulated 11, and air escapes from chamber 3 through chamber 48 and outlets 47.
    The piston 27 moves away from the surface 33 against the action of the spring 32, since the pressure in the storage chamber 8 is higher than the pressure in the chamber 23, and the pressure in the storage chamber 8 holds the plate valve 31 at the piston head 27. to prevent flow through the channels 30. The pressure in the storage chamber B causes the valve 49 to close due to a decrease in the supply pressure. The pressure in the memory chamber is then slowly reduced through the throttle channel 53.
    In the case when the deceleration of the wheel braked by brake 4 (FIG. 3) exceeds the set value, the valve 19 is energized by the blocking signal and the measles 54 are drawn inwards against the direction of the spring 25 action, which
     . -H-Mr-is; 11h-adku zltnorl 20 on C.:;:, Ii- /.1. lio innMu-iiiiai T messages between g; ol; Channel 6 and the chamber 23 11os.g1 (connected to the atmosphere through the torture of 2D 2D, despite the fact that -.anopiibi, valve 9 remains in pipi: 110; 110.; 1 (zhenie.
     The pressure in the chamber 23 11 ° -1polons the piston 38 relative to the removal of the valve body, the valve body 43, which is also removed from the valve body by the action of springs: chb,; f, o since while the head is on; 4Mipn oci iiTCH with shoulder 45 from PSL .. 1 oTj ojieniin input channel 36 from (1 drip 37). Further further, piston 38 in the same direction jieniii og1- | dpiig 40 from the AI sleeve, so that compressed air and gas measures - (3 is emitted into the atmosphere through 1 st 47 e 47.
    Poriyun 27 doubles down so that; 30 drops are closed by a flap valve 31, and valve 49 is closed.
    The pressure D of the storage chamber 8 is also reduced (falls) through the throttle channel 53 and the through hole 47, but with a lower decrease in speed, an adjustable throttling channel (.. M 53.
    In the case that the control module detects that an obstacle; the wheels are removed (Fig. 4), the electromagnet is de-energized, so that the shutter 20 re-sits on the seat 22 in order to isolate the chamber 23 from the atmosphere and open it under water; 6 towards the camera 2}. This reduces the pressure on the underside of the diaphragm 14, so that the sanopiun i valve 9 closes up, due to the movement of the spring 55
    ; ), avleva in the chamber 23 increases rapidly due to the flow through the narrowed
    1P, 1H channel bounded by gap 17, with secured flow restriction: p) And the shut-off valve 9 is closed. Valve 35 B1 is shut off in 1)); from the pressure in chamber 23 to re-apply the brakes.
    Since the volume of the chamber 23 is relatively small, the pressure in the chamber 23 quickly increases in the first stage of the re-application of the brake.
    In HanajUiHbiii, the period of pressure in the recording chamber 8 is greater in comparison with the HIDO with adjustable pressure in the chamber; re 23. that allows you to hold porgan
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    27 in the lower position, in which the piston head is separated by a distance from the surface 33. The area of the piston 27, exposed to pressure in the storage chamber 8, is larger than the area affected. action of the control pressure in the chamber 23. The storage pressure, therefore, continues to hold the plate valve 31, pressing it against the piston head 27.
    The storage pressure is also greater than the external (supplied) pressure and therefore keeps the valve 49 closed, but the storage pressure decreases due to leakage through the throttle channel 53 at a decreasing rate, since the external pressure created in chamber 3 increases.
    When the regulating pressure (control pressure) in chamber 23 rises to a pressure equal to the reduced storage pressure, the piston 27 remains in its lower position due to different areas subjected to pressures in chambers 8 and 23.
    As the pressure in the chamber 23 continues to rise and equalizes with the pressure in the chamber 8, at the moment of switching the plate valve 31 opens, and the memory chamber 8 then feeds from the chamber 23.
    Since the volume of the storage chamber 8 is larger compared to the volume of chamber 23, the further increase in pressure in chamber 23 occurs at a slower speed, which ensures a reduced rate of increase in external pressure created in chamber 3. Thus, the brakes are again activated in the second stage, but with a lower rate of pressure increase. This continues with the subsequent reapplication of the brake in the normal cycle, taking into account the slip conditions until the end of this brake application sequence or until other slip conditions are reached, after which the sequence of release and repetition of the brake is repeated.
    The loading of the spring 52 acting on the locking member 50 is chosen such that, together with the storage chamber 8, it ensures that the valve 49 remains closed and, thus, the entire power supply of the storage chamber 8 occurs VJ3 of the chamber 23.
    In the modification shown in Fig. 6, a seal is laid in the radially groove 57 in the piston 27. This increases the relative difference between the two areas of the piston 27 to which the pressure in the chambers 8 and 23 applies, due to the fact that the seal 34 cannot touch and therefore, press against the shoulder at the end of the bore hole 28, which is remote from the surface 33.
    In the modified structures shown in FIGS. 7 and 8, the undercut of the channel 53 is lowered and the throttle channel 58 is made in the piston 27. The design and operation of the node 26 is similar to that described except that the pressure in the storage chamber 8 can be bypassed into the chamber 23 through channel 58,
    Depending on the relative position of the piston 27 in the bore hole 28, the seal 34 moves in the appropriate direction from the channel 58 under the influence of pressure drops in the chamber 23 and the storage chamber 8. The plate valve 31 is still in effect, preventing the storage chamber 8 from communicating with the chamber 23 during the initial overlay brakes in the general slip prevention cycle.
    In the modifications shown in Figures 9 and 10, the seal 34 is held in a radial groove 59 of sufficient longitudinal length in order to allow the seal to move between the opposite sides of the orifice depending on the piston movement between its two extreme positions, but not enough so that the seal 34 can come into contact with the shoulder in the bore hole 28 from the side remote from the surface 33. As and. in the modification depicted in FIG. 6, this ensures that the relative difference between the two effective areas of pressure 27 is maintained.
    When the brake valve 7 is released, all components return to the position shown in Fig. 2, and all the chambers release all the contents to the atmosphere. The valve 18 is opened — the pressure in the chamber 16 is reduced to ensure the quick opening of the shut-off valve 9.
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    The brake system for sliding the slide (Fig. 11) is intended for use with a trailer vehicle being towed by a tractor. The modulator 1 was modified to connect the connection 60 to the emergency source 61 of the trailer's power from the tractor, and the node 62 of the safety spring 63 was inserted into the valve 35. The node 62 is designed to automatically transfer the valve 35 D to the position where the chamber 3 of the brake 4 is isolated from the outlet 47, and receiver 2 directly communicates with camera 3 in the event of a failure of the emergency source 61,
    The assembly 62 comprises a stepped piston 64, having three sections 65-67 of smaller, intermediate and larger diameters in the direction of the outlet 47, these three sections are located in the areas of corresponding diameters in the housing 5. And between the surfaces of each additional pair of sections, seals 68-70 are provided . Seals 68 and 69 are located at opposite ends of a channel 71 leading from junction 60, and seals 69 and 70 are located at opposite ends of a channel 36. A compression spring 63 acts between the shoulder, the limited locking member 43, and the heel containing ring 72, connected to the piston 64,
    The sleeve 41 of the valve 35 moves in the sleeve 73 abutting the ring 72, and the spring 46 acts in the direction causing the head 44 to move to the shoulder 45, which is bounded by the inwardly directed radial flange on the piston 64. The shutter 40 has the shape of a truncated cone and is in the form of a bottom the end of the stern body 74 connected to the piston 38 for connecting to the head 44 to isolate the chamber 48 from the outlet 47,
    The two portions of the piston 38 are sealed at the appropriate locations of the bore hole 39. The rod 74 is hollow and serves to connect to the section 75 ending at the upper end of the piston 38 to provide communication between the chamber 48 and the storage chamber 8 through a memory valve containing the first one-way valve 76 in the upper end of the piston 38 and a second one-way valve 77 in the housing 5, Throttle channel 78 is located 110g; this is the Cameron 8 and) {) Gl 23.
    I .iue one-way valve 79 OO provides a message in one nap.-p.ri.n.p. from the connection 60 of the emergency source 61 of the hook-on means with the k-: ip:, m 36 to the receiver 2.
    Koij.ia the trailer is properly connected to the tractor, and to connection 60 it is fed to the tractor from the emergency source 61A of the tractor from the tractor. This pressure acts on the shoulder on the piston 6A I in place of the change in diameters between sections 65 and 66 in order to turn the piston 64 into the reverse position against ji.ei icTHn.T force of the safety valve (pru / kppa 63 and bring the port to iif 64 tight contact with opi anoM 43. In this position, the brace 43 is connected to the head 44 in order to isolate the channel 36 from the camera 48, and the head 44 is removed from the shutter 40 to bring the camera 48 into communication with the outlet 47. In addition, air from source 61 is supplied to receiver 2 through a one-way valve 79 and creates pressure therein. ix.
    When brake 4 is to be applied by applying pressure regulator 1oa1 to piston 38, its shutter 40 is connected to head 44 to isolate chamber 48 from BiiiriycKHoro hole 47. Further, d / g piston 38 pulls head out in the same direction. 44 to move away from the shoulder 45 and against the action of the force of the spring 46, so that the air, which is searched under pressure, is fed from the receiver 2 from the source 61 to the chamber 3. During this operation, the air from the chambers 1.1 48 also enters the memory chamber 8 through the first and second one-way valves 76 and 77, so that the zapomi ayuIda kam Era 8 is subject to brake pressure.
    In case of accidental disconnection of the trailer from the tractor and. at least disturbing the emergency supply line from the trailer power supply 61, the pressure acting to keep the piston 64 in the deflected position is discharged through the channel 71 and the connection 60. The spring 63 shifts
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    the piston 64 in the position shown in Fig.11. During this movement, the piston 64 moves the head 44, causing it to connect to the shutter 40 and isolate the cutters 48 from the outlet 47. A subsequent movement of the piston 64 in the same direction separates the shoulder 45 from the shutter 40, and the receiver 2 is brought into direct communication with camera 48 in order to automatically apply the brake.
    权利要求:
    Claims (1)
    [1]
    Invention Formula
    The pneumatic anti-lock braking system of the vehicle contains the brake power chamber connected through the pressure modulator relay valve to the receiver connected via the brake valve to the control chamber of the relay valve, the supply channel is connected to the control valve of the modulator - a better camera, and a storage chamber connected through a check valve of the valve assembly to the control chamber, with the storage chamber communicating with the throttle channel, and in An electromagnetic valve is installed on the channel, the winding of which is included in the wheel lock sensor circuit, which, in order to increase the system's efficiency, a channel is installed in the modulator housing, which communicates a bypass chamber of the relay valve with a storage chamber in which an additional reverse valve is installed the valve, the throttle channel is made in the seat of the additional non-return valve, and the valve assembly is a stepped hollow piston mounted in the bore hole between controlling and storing the chambers and spring-pressed against the partition between the storage chamber and the cavity of the said opening, the check valve of the valve assembly is formed by a flat locking element fixed to the piston on the side of the partition and blocking the through channels formed in the end of the piston.
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    Compound gel C.Ilairapoii Editor
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    US3456991A|1969-07-22|Relay emergency valve
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    US5904228A|1999-05-18|Brake control system and related method
    US3729169A|1973-04-24|Adaptive braking system with hydraulically powered modulator
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    同族专利:
    公开号 | 公开日
    EP0174193A3|1987-05-20|
    ES546752A0|1986-07-16|
    DE3580955D1|1991-01-31|
    CS257279B2|1988-04-15|
    GB8522063D0|1985-10-09|
    EP0174193B1|1990-12-19|
    GB8422711D0|1984-10-10|
    CS639185A2|1987-09-17|
    ES8609077A1|1986-07-16|
    EP0174193A2|1986-03-12|
    GB2164111B|1988-01-13|
    JPH0262419B2|1990-12-25|
    HUT42390A|1987-07-28|
    JPS6171262A|1986-04-12|
    GB2164111A|1986-03-12|
    US4643491A|1987-02-17|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    GB1460146A|1973-02-13|1976-12-31|Girling Ltd|Control valve assemblies for air braking systems|
    GB2002471B|1977-07-09|1982-01-27|Girling Ltd|Fluid-pressure operated anti-skid braking systems for vehicles|
    AU518924B2|1977-11-12|1981-10-29|Girling Limited|Valving controlling brake re-application pressure|GB8719550D0|1987-08-19|1987-09-23|Lucas Ind Plc|Anti-skid braking systems|
    DE3921078A1|1989-06-28|1991-01-03|Bosch Gmbh Robert|COMPRESSED AIR BRAKE SYSTEM WITH AN ANTI-BLOCKING DEVICE|
    DE4038575A1|1989-12-22|1991-06-27|Bosch Gmbh Robert|PRESSURE CONTROL VALVE FOR AIR PRESSURE VEHICLE BRAKE SYSTEMS|
    DE69103515T2|1990-01-31|1995-02-02|Grau Ltd|VEHICLE BRAKE SYSTEM.|
    DE4101613A1|1991-01-21|1992-07-23|Knorr Bremse Ag|ELECTROPNEUMATIC CONTROL DEVICE FOR RAIL VEHICLE AIR BRAKES|
    DE4202389A1|1992-01-29|1993-08-05|Bosch Gmbh Robert|HYDRAULIC BRAKE SYSTEM, ESPECIALLY FOR MOTOR VEHICLES|
    GB9701772D0|1997-01-29|1997-03-19|Lucas Ind Plc|Improvements in pneumatically-operated braking systems for vehicles|
    US6209971B1|1998-06-30|2001-04-03|Alliedsignal Truck Brake Systems Company|Non flow-through solenoid for heavy vehicle ABS modulators|
    US20050110342A1|2003-11-24|2005-05-26|Eberling Charles E.|Brake actuator with integral antilock modulator|
    DE102013015830A1|2013-09-24|2015-03-26|Wabco Gmbh|valve means|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    GB848422711A|GB8422711D0|1984-09-07|1984-09-07|Fluid-pressure operated anti-skid braking systems|
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