• 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:
    A device for discontinuing and automatically restoring the operational function of a spring brake actuator comprises a piston (9) with a piston rod (10) and a spring (13) actuating the piston and piston rod in a working direction for brake application at falling brake fluid pressure on the piston, a slitted, resilient locking ring (15) being arranged in grooves (16, 17) facing each other in the piston rod and a piston rod sleeve (14) coaxial therewith. The locking ring can either be constrained to rest in both of the grooves, so that the piston rod and piston rod sleeve are locked together, or be free to be forced completely into one of the grooves, which is at least as deep as the thickness of the ring, so that the piston rod and piston rod sleeve are free to move independently of each other. In a compartment (20) in a piston rod flange (10ʹ) are arranged a movable locking yoke (21), which can engage heads (15ʹ) at the respective ends of the ring for keeping them together, and a locking cube (22), which is movable by a control rod (23) substantially perpendicularly to the yoke and will lock the yoke in said engaging condition when placed above the yoke.
    公开号:SU1508954A3
    申请号:SU874203363
    申请日:1987-09-07
    公开日:1989-09-15
    发明作者:Маттис Северинссон Ларс；Эгил Люнг Кристер；Серен Эмильссон Фред
    申请人:Саб Нифе Аб (Фирма)；
    IPC主号:
    专利说明:

    2 25 23 A-. J v
     S
    oa 5
    3150
    This invention relates to a transport engineering, in particular to spring brakes.
    The purpose of the invention is to increase reliability.
    Fig. 1 shows a combined brake unit of a rail vehicle with a spring brake actuator; Fig, 2 - connection of piston rod with sleeve; FIG. 3 is a section A-A in FIG. 1, (a stacking unit); FIG. 4 is a stack 1st unit, an example of the embodiment; FIG. 5 shows the connection of the stem with the sleeve, an example of the design; in fig; 6 - tightening unit, an example of execution; Fig. 7 illustrates the connection of the rod with the sleeve, an example of the embodiment.
    The brake piston 1 is axially movable in the cylinder of the brake block containing the casing 2 and the bottom 3, the piston return spring 4 is installed between the piston 1 and the bottom 3, the Tubular stationary element 5 is integral with the bottom 3, and the clearance adjuster is placed in it (not shown) of any type. The waste part 6 for transmitting the force is connected to the piston 1,
    The spring brake actuator is combined with the brake unit. The starter has a cylindrical casing 7 provided with holders 8 for mounting the combined brake unit and the starter on a suitable part of the chassis (not shown) of the rail vehicle. Both casing 2 and 7 are rigidly fastened with each other and with the bottom 3 in the usual way. The piston 9 and the rod 10 are movable axially in the cylindrical casing 7, the piston 9 is provided with a seal 11, and the other seal 12 is installed in the casing 7 on the rod 10, the force type 13 screw-type spring is installed around the rod 10 between the casing 7 and the stem flange ten,
    . The rod 10 is tubular and can make a sliding movement on the schlindric cTaiijiOHapHOM element 5. In order to transfer forces (for stopping and emergency braking) from the spring 13 to part 6 through the piston rod 10, the sleeve 14 is functionally connected to the rod 10 by means of an elastic locking valve. rings 15, located in two annular grooves 16 and 17 facing each other, corresponding to the rod 10 and sleeve 14, the force from
    the springs 13 through the rod 10, the locking ring 15 and the sleeve 14 of the piston rod is transferred to part 6 by means of a spring ring 18 installed in an annular groove in part 6,
    The penetration of moisture, dirt or other impurities is prevented by means of the bellows 19, 11 covering the entire mechanism from part 6 for transmitting the force to the left in FIG. 1 to the casing
    7 starter
    Fig. 1 shows the brake unit and spring brake actuator in their non-operating positions. For the spring brake actuator in this position, the spring 13 remains compressed under the pressure of the brake fluid directed to the right in FIG. 1 on the piston 9. If this fluid pressure is reduced, the force of the spring 13 acts on the projecting part 6 to transfer force through the spring ring 18, and the locking ring 15 locks in the position shown the rod 10 and the sleeve 14 axially together. By inserting the spring ring 18, the brake unit itself can apply a braking force (by applying fluid pressure to the piston 1) through the projecting part 6, which transmits the force, without activating the spring brake actuator.
    The locking ring 15 has a slot (or, in other words, is designed as an earring), as shown in Fig. 3, and can undergo radial expansion from its rest state (Figs. 1 and 3). This expansion force is realized by a conical side surface interacting with the corresponding conical side surface of the groove 17 (Fig. 2), the depth of the groove 16 in the stem 10 is at least the same size as the thickness or height of the locking ring 15,
    8 accordingly, if the ring 15 is expanded, it can fully fit into the groove 16, breaking the connection of the rod 10 with the sleeve 14, which can thus move independently of the rod 10,
    On either side of its slot, the closure ring 15 is provided with a head having an inclined or wedge-shaped outer surface. The heads pass into the compartment 20 in the flange of the stem 10, the locking collar 21 is located in the compartment 20, as well as the locking cam 22, above the collar at the top wall of the compartment. The upper surface of the yoke 21 and the lower surface of the cam 22 are inclined or wedge-shaped (Fig. 3). The cut angle is relatively small. As shown in FIG. 3, the overall height of the compartment 20 is such that the clamp 21, the internal po10
    A braked vehicle equipped with a brake unit, integral with the spring brake actuator (Fig. 1), must be moved in the absence of brake fluid pressure. In such a case, it is only necessary to push the lever 24 manually downwards so that the locking ring 15 expands in the groove 16, and in the joint 14, together with part 6, one hundred percent of the night brake created by the spring 13 is released. In this unloaded condition block back
    the surfaces of which coincide with the external surfaces of the heads of the locking ring 15 are held above the heads when the cam 22 is just above the yoke.
    By making a groove and a pin device (not shown), the spring 4 can fully engage the mutant 21 moving radially relative to the piston 1 of the braking unit in the locking ring 15. As follows from FIG. 3, the cam 22 can move perpendicularly to the rod 10 and is attached to the control lever member 23 20 extending from the flange of the rod 10 in which it is located. An annular control lever 24 is attached to an elongated hole at the end of the organ 23. The lever 23 and, therefore, the locking cam 22 can be moved to the right in FIG. 3. By pressing the control lever 24 so that the clamp 21 can be locked
    move radially upward in the jQ. When the various parts of the takeoff again 20, tear off the heads, lock the positions shown in FIG. 3 of the ring 15, thus, the locking ring 15 can extend radially into the groove 16 of the rod 10 with its conical side, due to which free relative axial movement of the rod 10 and the bushings 14, which are otherwise blocked together with a 15 ”ring, is carried out.
    Return spring 25 compress the winnings to the left to the bottom of the casing 7 actuator.
    When the pressure of the fluid acting on the piston 9 of the spring brake returns, the spring 13 is compressed again. When both grooves 16 and 17 in the stem 10 and the sleeve 14, respectively, are again facing one another, the locking ring 15 is located in the 25th groove 17. The return spring 25 pushes the locking cam 22 to the left in FIG. 3, moving down the locking collar 21 to its blocking position above the heads of the locking ring 15 (FIG. 3)
    35
    40
    and 1, the working function of the block is restored, and the restoration is fully automatic.
    According to FIG. 4 and 5, the locking ring 26 (fully corresponding to the locking ring 15 in FIGS. 1-3) is installed in two circular grooves 27 and 28, respectively, in two parts 29 and 30 of the spring brake actuator. There is a slot in the locking ring 26, and it is displaced to the position shown in FIGS. 4 and 5. At the expense of the beveled side, it is subjected to a force that displaces it radially into the groove 27 in the part 29 if it is not held in place. This is carried out by a circular control 1 m lock 31, which is hinged at a fixed point 32. The hinge movement in the direction of the arrow in FIG. 4 is bounded by a fixed pin 33 and a corresponding notch in lock 31. There are two notches in lock 31: one notch for the first head 34 on the lock, and the other for the second head 35 on it. The first head 34 is made large enough and does not jump out of the recess on the lock when the
    This type is located around the lever 23 and exerts a bias force to the left (FIG. 3) on the locking cam 22 so that it can again be placed in the locking position above the locking collar 21.
    The task of the mechanism, the main component of which is the locking ring 15, controlled by cam 22, is to interrupt the transfer of force from the spring 13 to part 6 through the sleeve 14, despite the fact that there is no fluid pressure to compress the spring 13 behind by moving the piston 9 of the spring brake to the right in FIG. 1, Usually this situation occurs when worn brake pads are to be replaced or when
    A braked vehicle equipped with a brake unit, integral with the spring brake actuator (Fig. 1), must move in the absence of brake fluid pressure. In such a case, it is only necessary to push the lever 24 manually downwards so that the locking ring 15 expands in the groove 16, and in the joint 14, together with part 6, the hundredth night brake created by the spring 13 is released. In this unloaded condition returnable
    the spring 4 can fully retract the piston 1 of the brake unit in position
    the spring 4 can fully retract the piston 1 of the brake unit in position
    left to the bottom of the casing 7 starter.
    When the pressure of the fluid acting on the piston 9 of the spring brake returns, the spring 13 is compressed again. When both grooves 16 and 17 in the stem 10 and the sleeve 14, respectively, are again facing one another, the locking ring 15 is located in the groove 17. The return spring 25 pushes the locking cam 22 to the left along the needles. 3, moving down the locking collar 21 to its blocking position above the heads of the locking ring 15 (FIG. 3)
    Q When the various parts again take the positions shown in FIG. 3
    five
    0
    five
    0
    five
    and 1, the working function of the block is restored, and the restoration is fully automatic.
    According to FIG. 4 and 5, the locking ring 26 (fully corresponding to the locking ring 15 in FIGS. 1-3) is installed in two circular grooves 27 and 28, respectively, in two parts 29 and 30 of the spring brake actuator. There is a slot in the locking ring 26, and it is displaced to the position shown in FIGS. 4 and 5. At the expense of the beveled side, it is subjected to a force that displaces it radially into the groove 27 in the part 29 if it is not held in place. This is carried out by a circular control 1 m lock 31, which is hinged at a fixed point 32. The hinge movement in the direction of the arrow in FIG. 4 is bounded by a fixed pin 33 and a corresponding notch in lock 31. There are two notches in lock 31: one notch for the first head 34 on the lock, and the other for the second head 35 on it. The first head 34 is made large enough and does not jump out of the recess on the lock when the
    manually moving it in the direction of the arrow, while the second head 35 in this case is released from the lock 31, so that the locking ring 26 can expand radially, enter the groove 27 and set the parts 29 and 30 into a state of free movement relative to each other. Shut off; . the function of the locking ring 26 is automatically restored, provided that the force of the return spring is applied to the lock 31 in the clockwise direction, as shown in FIG. four.
    In the device of FIG. 6 and 7, the circular locking ring 36 is displaced radially inward from its normal position if the control slider 37 is manually moved in the direction of the arrow in FIG. 6 so that the narrow part of the slider is between the ends of the split ring-36. This means that the locking ring 36 in its unlocked state remains in the annular groove 38 in the part 39 of the spring brake actuator, i.e. coaxially with the other part 40. When returning the control slider 37 by the spring force to the position shown in FIG. 6, the spring brake actuator is automatically restored.
    权利要求:
    Claims (6)
    [1]
    1. A device for interrupting and automatically restoring the operating function of a spring brake actuator, comprising a split elastic locking ring of an earring type, mounted in facing each other to arrays made in a piston rod displaced by a force spring when the brake fluid pressure acting on the piston decreases , and in a sleeve installed coaxially with the rod, which is characterized by the fact that, in order to increase reliability, it is equipped with a twisting unit,
    who live the split ring at the same time in both grooves and including a collar that engages with the heads that are wired at the ends of the
    Q 5
    20 25. ZO
    35
    40
    45
    50
    having a ring
    radial movement relative to the outer surface of the split
    rings in the chamber made in the flange part of the stem, and the cam pressed by the compression spring to the position above the collar and having the possibility of movement in the direction perpendicular to the direction of movement of the collar, and the depth of the groove in the rod is not less: the thickness of the split ring fully located in this groove at blooming of the twisting node.
    [2]
    2. The device according to claim 1, characterized in that the split ring is made with a lateral conical surface in the forward direction of the rod when braking the end face, and the groove
    in the sleeve is made with a conical side surface in contact with the conical surface of the split ring.
    [3]
    3. The device according to claim 1, which is the height of the chamber in the flange part of the stem is such that when the clamp is in the working position, the cuff is clamped between the clamp and the wall of the chamber opposite the clamp.
    [4]
    4. The device according to claim 1, characterized in that a hole j is made in the flange portion of the stem in which a protruding
    from it a control rod is connected to the cam, and a compression spring is installed concentrically between the ledge formed in the hole and the cam.
    [5]
    5. A device according to 4, characterized in that the interlocking outer surfaces of the heads of the split ring and the corresponding inner surfaces of the collar as well as the outer upper surface of the collar
    and the lower surface of the clamp interacting with it and the lower surface of the cam interacting with it are made oblique or wedge-shaped.
    [6]
    6. The device according to paragraphs. 1, 3-5, which is due to the fact that the interaction surfaces of the clamp and cam are filled with bevelled or inclined.
    79 L 3 2
    Fig1
    U
    26 28 30 FIG. five
    36

    37
    N
    f
    ABOUT
    J5
    Fig.b
    类似技术:
    公开号 | 公开日 | 专利标题
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    US3627083A|1971-12-14|Disc brake adjusting mechanism
    US4356799A|1982-11-02|Spring retainer-valve selector
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3070389A|1956-09-14|1962-12-25|Agfa Ag Fa|Structure for removable connecting a device to a support therefor|
    DE1083675B|1958-07-19|1960-06-15|Zahnradfabrik Friedrichshafen|Steering lock for motor vehicles, especially for farm tractors and tractors|
    GB1403653A|1972-06-07|1975-08-28|Ts N I|Vehicle brake actuators|
    US3994206A|1973-10-25|1976-11-30|Svenska Aktiebolaget Bromsregulator|Device for discontinuing and automatically restoring the operational function of a spring brake actuator|
    US4036111A|1973-10-25|1977-07-19|Svenska Aktiebolaget Bromsregulator|Device for discontinuing and automatically restoring the operational function of a spring brake actuator|
    SE383997B|1973-10-25|1976-04-12|Bromsregulator Svenska Ab|LASEN DEVICE FOR SPRING BRAKE ACTUATOR|
    US3918346A|1974-07-11|1975-11-11|Us Army|Frictional lock for retaining a rotatable piston against axial displacement|
    SE392436B|1975-03-03|1977-03-28|Bromsregulator Svenska Ab|DEVICE FOR CANCELING AND AUTOMATICALLY RESTORING THE WORKING FUNCTION OF A SPRING BRAKE ACTUATOR|
    SE402081B|1976-10-11|1978-06-19|Bromsregulator Svenska Ab|DEVICE WITH CONTROL VALVE TO CANCEL AND RESTORE THE WORKING FUNCTION OF A SPRING BRAKE ACTUATOR|
    DE2646158C2|1976-10-13|1978-12-07|Graubremse Gmbh, 6900 Heidelberg|Quickly releasable spring force storage device, especially for parking brakes of motor vehicles|
    DE2800449C3|1978-01-05|1980-12-04|Knorr-Bremse Gmbh, 8000 Muenchen|Snap release device for spring brake cylinders with damping device|
    ZA80999B|1979-03-06|1981-02-25|Bendix Westinghouse Ltd|Spring force applying actuators|
    DE2952205A1|1979-12-22|1981-06-25|Knorr-Bremse GmbH, 8000 München|SPRING-BRAKE CYLINDER|
    US4364305A|1980-06-09|1982-12-21|Wabco Westinghouse, S.A.|Brake cylinder device combining a pneumatically-applied service brake and a spring-applied parking brake|
    NL8104001A|1981-08-28|1983-03-16|Doornes Transmissie Bv|TRANSMISSION, ESPECIALLY FOR A MOTOR VEHICLE.|
    US4552056A|1984-12-24|1985-11-12|Wabco Ltd.|Manual release and automatic reset arrangement for spring-applied/air-released brake|US5193431A|1989-11-03|1993-03-16|Parker-Hannifin Corporation|Device for operation of a sliding door member|
    US5115176A|1990-10-22|1992-05-19|White Dewitt T|Control arrangement for electrically propelled wheeled vehicles|
    IT1241352B|1990-12-13|1994-01-10|Bendix Heavy Vehicle Syst|BRAKING ELEMENT FOR PNEUMATIC BRAKING SYSTEMS|
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    DE19512997C1|1995-04-06|1996-11-07|Knorr Bremse Systeme|Actuating device for braking devices of rail vehicles|
    US5848550A|1997-05-02|1998-12-15|Westinghouse Air Brake Company|Parking brake manual release mechanism|
    US5937974A|1997-05-02|1999-08-17|Westinghouse Air Brake Company|Spring applied parking brake actuator having a collet style slack adjuster|
    US6702072B2|2002-04-18|2004-03-09|Westinghouse Air Brake Technologies Corporation|Brake cylinder unit|
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    US7140477B2|2003-09-09|2006-11-28|Wabtec Holding Corp.|Automatic parking brake for a rail vehicle|
    US7493994B2|2004-12-16|2009-02-24|Bendix Spicer Foundation Brake Llc|Spring brake actuator with mid-located spring|
    JP4721378B2|2008-05-29|2011-07-13|ナブテスコ株式会社|Brake cylinder device and brake caliper device|
    US8082645B2|2008-12-08|2011-12-27|Wabtec Holding Corp.|Rotary manual release|
    DE102019113930A1|2019-05-24|2020-11-26|Knorr-Bremse Systeme für Schienenfahrzeuge GmbH|Brake cylinder with a locking device for mechanical braking force locking|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE8603745A|SE454428B|1986-09-08|1986-09-08|LOADING DEVICE IN SPRING BRAKE ACTUATOR TO CANCEL AND AUTOMATICALLY RETURN THE WORK FUNCTION|
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