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10 条记录 (耗时 0.014 秒)

    Fluid pressure and dynamic brake interlock valve with variable load control
    1.
    发明授权
    Fluid pressure and dynamic brake interlock valve with variable load control 失效
    具有可变负载控制的流体压力和动态制动互锁阀

    公开(公告)号：US3639010A

    公开(公告)日：1972-02-01

    申请号：US3639010D

    申请日：1969-12-15

    申请人： WESTINGHOUSE AIR BRAKE CO

    发明人： MAYER GARY T ,  SCOTT DANIEL G

    IPC分类号： B60T8/18 ,  B60T13/58

    CPC分类号： B60T8/1893 ,  B60T13/586

    摘要： This invention relates to a triple-diaphragm pressure-operated variable-load-type brake control valve for rapid transit vehicles wherein the body of the vehicle is supported on air springs, the pressure in which is varied to maintain the body at a substantially constant height above the rails irrespective of the load on the body. Furthermore, air spring pressure varies the effective area of that one of the three diaphragms that is subject to brake cylinder pressure whereby the brake cylinder pressure required to effect movement of the brake control valve to a lap position subsequent to any reduction of brake pipe pressure effective on one side of a second one of the diaphragms relative to a substantially constant control reservoir pressure effective on the opposite side of this second diaphragm, varies directly as the load carried on the body of the vehicle. The third diaphragm is subject to a fluid pressure that corresponds to the degree of dynamic brake and acts thereon in the same direction as brake pipe pressure acts on the second diaphragm. Consequently, as the speed of the vehicle diminishes and the dynamic brake fades out, the brake control valve operates to control the blending therewith of the pneumatic brake in such a manner as to bring a rapid transit train, each car of which is provided with this brake control valve, to a proper stop at a predetermined rate of deceleration.

    摘要翻译： 本发明涉及一种用于快速运输车辆的三隔膜压力操作的可变负载型制动控制阀，其中车辆的车身被支撑在空气弹簧上，其压力被改变以将车身保持在基本恒定的高度 在轨道上方，不管身体的负载如何。 此外，空气弹簧压力改变受到制动气缸压力的三个隔膜中的一个的有效面积，从而在制动管压力有效降低之后，使制动控制阀进入搭接位置所需的制动缸压力 相对于在该第二隔膜的相对侧上有效的基本上恒定的控制储存器压力，第二隔膜中的第二个的一侧直接作为承载在车辆的车身上的负载而变化。 第三隔膜经受对应于动态制动程度的流体压力，并在与制动管压力作用在第二隔膜上的方向相同的作用上。 因此，当车辆的速度减小并且动态制动器消失时，制动控制阀以这样的方式操作以控制与气动制动器的混合，使得快速的运输列车，其中每个轿厢设置有该 制动控制阀，以预定的减速度适当地停止。

    Empty-load changeover apparatus
    2.
    发明授权
    Empty-load changeover apparatus 失效
    空载更换装置

    公开(公告)号：US3671086A

    公开(公告)日：1972-06-20

    申请号：US3671086D

    申请日：1970-12-16

    申请人： WESTINGHOUSE AIR BRAKE CO

    发明人： SCOTT DANIEL G

    IPC分类号： B60T8/18

    CPC分类号： B60T8/185

    摘要： THIS INVENTION RELATES TO A BRAKE CYLINDER PRESSURE PROPORTIONAL VALVE DEVICE FOR INTERPOSITION IN A BRAKE CONTROL PIPE CONNECTING A BRAKE CONTROL VALVE AND A BRAKE CYLINDER AND A NOVEL MECHANISM ADJUSTABLE ACCORDINGLY AS THE VEHICLE IS EMPTY OR LOADED TO CAUSE THE PROPORTIONAL VALVE DEVICE TO OPERATE ONLY WHILE THE VEHICLE IS EMPTY AND SUBSEQUENT TO A CHOSEN BUILD-UP OF AN INSHOT PRESSURE IN THE

    BRAKE CYLINDER, TO CUT OFF FLOW OF FLUID UNDER PRESSURE FROM THE BRAKE CONTROL VALVE TO THE BRAKE CYLINDER AT A VALVE PROPORTIONAL TO THE PRESSURE ESTABLISHED IN THE CONTROL PIPE BY THE BRAKE CONTROL VALVE FOR THE REDUCTION OF PRESSURE EFFECTED IN THE BRAKE PIPE.

    Empty-load relay valve device
    3.
    发明授权
    Empty-load relay valve device 失效
    空载继电器阀装置

    公开(公告)号：US3606485A

    公开(公告)日：1971-09-20

    申请号：US3606485D

    申请日：1969-12-29

    申请人： WESTINGHOUSE AIR BRAKE CO

    发明人： SCOTT DANIEL G

    IPC分类号： B60T8/18

    CPC分类号： B60T8/1893

    摘要： THIS INVENTION RELATES TO A RAILWAY VEHICLE RELAY VALVE DEVICE FOR INTERPOSITION BETWEEN A BRAKE CONTROL PIPE AND A BRAKE CYLINDER AND INCLUDES A MECHANISM ADJUSTABLE ACCORDING TO THE LOAD CARRIED BY THE VEHICLE TO SO CONDITION THE RELAY VALVE DEVICES THAT ITS OPERATION BY FLUID UNDER PRESSURE FROM THE BRAKE CONTROL PIPE ALWAYS, PROVIDES A SUPPLY OF FLUID PRESSURE TO THE BRAKE CYLINDER, THE VALUE OF WHICH IS IN ACCORDANCE WITH THE WEIGHT OF THE LOAD CARRIED BY A SPRING-SUPPORTED (OR SPRUNG) PART OF THE VEHICLE BETWEEN WHICH AND AN UNSPRUNG PART, THE RELAY VALVE DEVICE IS INTERPOSED FOR EFFECTING OPERATION OF THE LOAD-MEASURING MECHANISM THEREOF IN ACCORDANCE WITH CHANGES IN THE LOAD CARRIED BY THE SPRING-SUPPORTED PART.

    Relay valve with load sensing means
    6.
    发明授权
    Relay valve with load sensing means 失效
    带传感器的继电器阀

    公开(公告)号：US3612621A

    公开(公告)日：1971-10-12

    申请号：US3612621D

    申请日：1970-02-16

    申请人： WESTINGHOUSE AIR BRAKE CO

    发明人： SCOTT DANIEL G

    IPC分类号： B60T8/18

    CPC分类号： B60T8/1893

    摘要： This invention relates to a railway vehicle double-abutment relay valve device for interposition between a brake control pipe and a brake cylinder and includes a novel mechanism adjustable accordingly as the vehicle is empty or loaded to so condition the relay valve device that its operation by fluid under pressure from the brake control pipe always provides a supply of fluid under pressure to the brake cylinder, the value of which is in accordance with the weight of the load carried by a springsupported (or sprung) part of the vehicle between which and an unsprung part, the relay valve device is interposed for effecting operation of the novel load-measuring or sensing mechanism thereof in accordance with changes in the load carried by the spring-supported part. The novel load-sensing mechanism includes a fluid pressure operated spool-type valve operatively connected to a load-sensing arm movable to one or another position accordingly as the vehicle is empty or loaded. The spool-type valve is provided with a pair of longitudinally spaced-apart elongated peripheral annular grooves one of which carries therein a reciprocable or sliding O-ring seal that so serves as a valve to control flow of fluid under pressure to one side of one of the abutments of the relay valve device as to accommodate substantial arcuate movement of the load-measuring arm without effecting a changeover of the relay valve device from load operation to empty operation and vice versa. The lengths and locations of these elongated grooves are such as to require that the movement of the spool valve in either direction, in response to the shocks, jolts, vertical movement and sidewise rocking experienced by the body of a railway vehicle while traveling at high speed, exceeds a chosen percentage of the total valve movement between empty and loaded positions before the O-ring seal is shifted from one end of its groove to another to thereby effect a change in the control of flow of fluid under pressure through a communication to one side of one of the abutments of the relay valve device to thereby render the one abutment effective or ineffective to cooperate with the other abutment to control operation of the relay valve device in accordance with the difference in the effective area of the pair of abutments, or in accordance with the effective area of the larger of the abutments.