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公开(公告)号：US20190048948A1
公开(公告)日：2019-02-14
申请号：US16159741
申请日：2018-10-15
申请人： Yibo ZENG
发明人： Yibo ZENG
摘要： A braking system, including a damper and a brake controller. The damper includes: a sealed gearbox including an inner chamber, at least one pair of engaged gears mated with the inner chamber of the gearbox, and a brake fluid storage box. The at least one pair of engaged gears include a driving gear. A first flowing channel and a second flowing channel are provided on both sides of the gearbox of the at least one pair of engaged gears, respectively. The first flowing channel and the second flowing channel include a first extracting outlet and a second extracting outlet, respectively, which are both disposed on the gearbox. The brake fluid storage box includes a first joint adapting to communicate with the first extracting outlet and a second joint adapting to communicate with the second extracting outlet. The brake controller includes at least one braking switch valve.
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2.发明授权Transmission with countershaft brake and method for braking a countershaft 有权带中间轴制动器的变速器和用于制动中间轴的方法公开(公告)号：US09188176B2
公开(公告)日：2015-11-17
申请号：US14233894
申请日：2011-08-19
申请人： John Jerwick , Michael E. Kahl
发明人： John Jerwick , Michael E. Kahl
CPC分类号： F16D57/06 , B60W10/11 , B60W10/196 , F16H3/12 , F16H2003/123 , Y10T477/6394
摘要： A transmission with a countershaft brake includes a countershaft, a positive displacement pump including a pump housing having a chamber with an inlet and an outlet, the pump being driven by the countershaft, and a flow restrictor disposed at or downstream of the chamber outlet, the flow restrictor being adjustable to increase and decrease an amount of flow restriction from, the outlet of the chamber. Torque needed to drive the pump increases with an increasing flow restriction by the flow restrictor. A method for braking a countershaft in a transmission is also provided.
摘要翻译： 具有中间轴制动器的变速器包括中间轴，正排量泵，其包括具有入口和出口的室的泵壳体，所述泵由中间轴驱动，以及设置在室出口处或下游的限流器， 流量限制器是可调节的，以增加和减少来自腔室出口的流量限制。 驱动泵所需的扭矩随着流量限制器的流量限制而增加。 还提供了用于在变速器中制动中间轴的方法。
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3.发明申请公开(公告)号：US20150192201A1
公开(公告)日：2015-07-09
申请号：US14150061
申请日：2014-01-08
CPC分类号： F16H61/0025 , B60T10/04 , F16D57/06 , F16H2061/0034
摘要： The present disclosure provides a method for increasing a volume of hydraulic fluid in a reservoir of a transmission. The method includes providing a retarder mounted to the transmission, an accumulator including an internal cavity, a piston disposed in the internal cavity of the accumulator, a solenoid, a valve, and a controller. The method also includes enabling the solenoid from an off state to an on state, transferring fluid pressure from the valve to the piston, and moving the piston from a first position to a second position in the internal cavity. The method further includes discharging an amount of hydraulic fluid from the internal cavity of the accumulator to the reservoir and increasing the volume of hydraulic fluid in the reservoir.
摘要翻译： 本公开提供了一种用于增加变速器的储存器中的液压流体的体积的方法。 该方法包括提供安装到变速器上的减速器，包括内腔的蓄能器，设置在蓄能器的内腔中的活塞，螺线管，阀和控制器。 该方法还包括使螺线管能够从关闭状态到接通状态，将流体压力从阀传递到活塞，以及将活塞从内部空腔中的第一位置移动到第二位置。 该方法还包括将一定量的液压流体从蓄能器的内腔排放到储存器中并增加储存器中的液压流体的体积。
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4.发明申请公开(公告)号：US20050127744A1
公开(公告)日：2005-06-16
申请号：US11010298
申请日：2004-12-14
申请人： Clemar Bucci
发明人： Clemar Bucci
摘要： A circulating fluid regulated braking device for air and land vehicles, which comprises an oil or similar fluid boost pump mounted on a steady support plate adjacent to each vehicle wheel. The pump is linked to a toothed wheel that engages another toothed wheel being an integral part of the hub of the vehicle wheel; said toothed wheels being housed in a hermetically sealed enclosure. The pumps mounted on front wheels are connected by means of pipes, to a primary two-way valve which, in turn, is connected by means of pipes to a primary oil or similar fluid storage tank, thus constituting a completely independent front wheel brake hydraulic circuit. The pumps mounted on rear wheels are connected by means of pipes, to a secondary two-way valve which, in turn, is connected by means of pipes to a secondary oil or similar fluid storage tank, thus constituting a completely independent rear wheel brake hydraulic circuit. The moveable inner body of the foregoing primary and secondary two-way valves is linked to the brake pedal lever of the vehicle. In one variant of the preferred embodiment the pump is mounted directly on the hub of each vehicle wheel. Said pump has a plurality of pistons housed in each cylindrical cavity forming part of a housing and which are arranged preferably in a radial arrangement. Each cylindrical cavity having an oil inlet and outlet orifice. Said inlet orifices are communicated with the pump inlet while the outlet orifices are communicated with the pump outlet. The outer face of said pistons is in contact with each helicoidal spring while the inner face of said pistons is in contact with the outer ring of a bearing, preferably a roller bearing. Said bearing being mounted on an eccentric cylindrical body forming part of the hub of the vehicle wheel.
摘要翻译： 一种用于空中和陆地车辆的循环流体调节制动装置，其包括安装在与每个车轮相邻的稳定支撑板上的油或类似的液体升压泵。 泵连接到齿轮，该齿轮与作为车轮的轮毂的一体部分的另一个齿轮接合; 所述齿轮容纳在气密密封的外壳中。 安装在前轮上的泵通过管道连接到主要的二通阀，主阀通过管道连接到主油或类似的储油箱，从而构成完全独立的前轮制动液压 电路。 安装在后轮上的泵通过管道连接到二次二通阀，二次阀通过管道连接到二次油或类似的液体储罐，从而构成完全独立的后轮制动液压 电路。 上述主要和次要双向阀的可移动的内部主体连接到车辆的制动踏板杆。 在优选实施例的一个变型中，泵直接安装在每个车轮的轮毂上。 所述泵具有容纳在形成壳体的一部分的每个圆柱形空腔中的多个活塞，并且优选地以径向布置布置。 每个圆柱形腔具有进油口和出口孔。 所述入口孔与泵入口连通，而出口孔与泵出口连通。 所述活塞的外表面与每个螺旋弹簧接触，而所述活塞的内表面与轴承的外圈接触，优选为滚子轴承。 所述轴承安装在构成车轮的轮毂的一部分的偏心圆筒体上。
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公开(公告)号：US5988344A
公开(公告)日：1999-11-23
申请号：US931379
申请日：1997-09-16
申请人： Kevin Michael Allen
发明人： Kevin Michael Allen
CPC分类号： F16D57/06 , B60T1/062 , B60T11/103 , B60T7/042
摘要： Rotation of transmission shafts as typically provided by the clutch brake is instead provided by increasing the load on the transmission shafts. In one embodiment, this is achieved by restricting flow through the supply line between the shaft driven pump and the oil cooler. By restricting this flow, the load on the pump increases, and the torque required to drive the pump increases. This, in turn, retards rotation of the transmission shafts to achieve the function typically provided by the clutch brake of stopping rotation. The present invention thus provides the function without the requirement of a clutch brake. The present invention is much more easily serviced or replaced than a clutch brake, and includes only elements which are accessible from outside of the transmission, and thus may be easily serviced or replaced.
摘要翻译： 通常由离合器制动器提供的传动轴的旋转通过增加传动轴上的负载来提供。 在一个实施例中，这是通过限制通过轴驱动泵和油冷却器之间的供应管线的流动来实现的。 通过限制该流量，泵上的负载增加，并且驱动泵所需的扭矩增加。 这反过来又阻碍了传动轴的旋转，以实现通常由离合器制动器提供的停止转动的功能。 因此，本发明提供了无需离合器制动的功能。 本发明比离合器制动器容易地进行维修或更换，并且仅包括可从变速器外部接近的元件，因此可以容易地进行维修或更换。
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公开(公告)号：US4463830A
公开(公告)日：1984-08-07
申请号：US356448
申请日：1982-03-09
申请人： Alfonsus A. Geurtsen
发明人： Alfonsus A. Geurtsen
CPC分类号： A62B1/12
摘要： A reel for a life-line comprising a frame, a winding member rotatably journalled in said frame and damping means connected on the one hand with the frame and on the other hand with the winding member for counteracting the rotation of the winding member, said damping means comprising at least two piston pumps axially arranged side by side in a pump housing and cam discs, the cylinder chambers of said piston pumps communicating with one another by an axial channel forming a restriction and the pistons being in contact with the surfaces of the cam discs relatively off-set by half a cam interval, said winding member extending around the damping means, said cam discs being formed by rings and each piston pump being radially arranged inside a ring, while the axial channel is in line with a bore extending from a head face of the pump housing.
摘要翻译： 一种用于生命线的卷轴，包括框架，可旋转地支撑在所述框架中的卷绕构件和一方面与框架连接的阻尼装置，另一方面与用于抵抗卷绕构件的旋转的卷绕构件相结合，阻尼 包括在泵壳体和凸轮盘中并排轴向设置的至少两个活塞泵的装置，所述活塞泵的气缸室通过形成限制的轴向通道彼此连通，并且活塞与凸轮表面接触 所述卷绕构件围绕所述阻尼装置延伸，所述凸轮盘由环形成，并且每个活塞泵径向地布置在环内，而所述轴向通道与从所述凸轮延伸的孔对齐， 泵壳的头部表面。
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公开(公告)号：US4451094A
公开(公告)日：1984-05-29
申请号：US318317
申请日：1981-11-05
申请人： Jose L. Martin
发明人： Jose L. Martin
摘要： A hydraulic brake system for ground driven wheels of a trailer includes a rotatable shaft driven by the wheels which in turn drives an axial piston hydraulic pump with a closed loop circuit with pressure control device for controlling the pressure within the circuit for controlling the load on the pump and, hence, the braking of the wheels. The system includes pressurized air control of a metering valve within the hydraulic circuit for controlling the pressure therein and includes air override of the hydraulic pressure for enabling the normally disabled pump.
摘要翻译： 用于拖车的地面驱动轮的液压制动系统包括由车轮驱动的可旋转轴，所述旋转轴又由具有压力控制装置的闭环回路驱动轴向活塞液压泵，用于控制电路内的压力以控制在 泵，并因此制动车轮。 该系统包括在液压回路内的计量阀的加压空气控制，用于控制其中的压力，并且包括用于启用正常禁用的泵的液压的空气超驰。
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公开(公告)号：US4331223A
公开(公告)日：1982-05-25
申请号：US140946
申请日：1980-04-16
CPC分类号： F16D57/06 , F16D2121/20
摘要： An electrohydraulic rotary brake comprises an inner core, at least one energizing winding, a cylindrical amagnetic insert and an annular part outside the core and the insert. A cylindrical bore is excentric with respect to the cylindrical peripheral surface of the insert, recesses being provided with magnetizable sliding vanes and a brake fluid. On a rotary shaft, are mounted lateral flanges in fluid-tight manner, the inner core being fast to the rotary shaft and to the insert, all three being arranged so as to constitute a rotor for the brake. The annular part outside the core and the insert constitutes an annular stator to which the lateral flanges are fixed and with the bore excentric with respect to the peripheral surface of the insert constituting the outer part of the rotor. The recesses are formed in the cylindrical amagnetic insert and extend radially therein on both sides so that the vanes are movable between a position of complete freedom of the rotor with respect to the annular stator, in which they are positioned close to the rotor core, and a braking position in which they are positioned close to said annular stator, so that, under the effect of a variation in a pre-determined sense of the current passing through the energizing winding, the vanes can be attracted towards said stator and thus define peripheral chambers of different volumes which, by the forced passage of respective volumes of fluid from one chamber to the other, cause between the vanes and the stator a severe throttling and thus the braking torque of the rotor.
摘要翻译： 电动液压旋转制动器包括内芯，至少一个激励绕组，圆柱形非磁性插入件和在芯部和插入件外部的环形部分。 圆柱形孔相对于插入件的圆柱形外周表面偏心，凹部设有可磁化的滑动叶片和制动液。 在旋转轴上，以流体密封的方式安装横向凸缘，内芯快速旋转轴和插入件，所有三个都布置成构成用于制动器的转子。 芯部和插入件外部的环形部件构成环形定子，侧面凸缘固定到该环形定子上，并且孔相对于构成转子外部的插入件的外周表面偏心。 凹部形成在圆柱形的无磁性插入件中并在两侧径向地延伸，使得叶片能够相对于环形定子在转子完全自由的位置之间移动，在该位置上它们靠近转子芯，并且 制动位置，其中它们靠近所述环形定子定位，使得在预定的通过激励绕组的电流感的变化的作用下，叶片可以被吸引到所述定子并因此限定外围 不同体积的腔室通过相应体积的流体从一个腔室强制通过到另一个腔室，从而在叶片和定子之间引起严重的节流并因此导致转子的制动转矩。
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公开(公告)号：US3989127A
公开(公告)日：1976-11-02
申请号：US551840
申请日：1975-02-21
CPC分类号： F16D57/005 , F16D57/04 , F16D65/78
摘要： A hydrodynamic brake system wherein the extent to which the working chamber between the rotor and stator is filled with braking liquid is regulated by a valve which is adjustable by a measuring device having an overflow line communicating with two spaced-apart portions of the working chamber and containing two flow restrictors. The end portions of the overflow line are positioned in such a way that a continuous stream of liquid flows through the overflow line when the rotor is driven. At least one of the flow restrictors is adjustable so as to insure that the pressure of liquid in the overflow line between the flow restrictors is indicative of the real braking action of the system. Such pressure is used for adjustment of the valve to thus insure that the extent to which the working chamber is filled varies in response to changes in rotational speed of the rotor so as to guarantee a reproducible progress of the braking action.BACKGROUND OF THE INVENTIONThe present invention relates to improvements in hydrodynamic retarder or brake systems for the wheels of locomotives and other automotive vehicles or other rotary parts. More particularly, the invention relates to improvements in hydrodynamic brake systems of the type wherein a rotary blade ring (hereinafter called rotor) cooperates with a stationary blade ring (hereinafter called stator) to define a toroidal working chamber for a suitable braking liquid (e.g., a non-volatile lubricant) and wherein the rate at which the braking action varies (the variation may be zero) in response to changes in rotational speed of the rotor can be regulated in dependency on deviations of rated value of the braking action from the real braking action, the latter being dependent on the extent to which the working chamber is filled with braking liquid. The rotor receives torque from the wheel of an automotive vehicle or from another rotary part which requires braking.The braking action of a hydrodynamic brake system increases with the square of the rotor speed when the extent to which the working chamber is filled with liquid remains unchanged. The curve which is indicative of the increasing braking action is a parabola, and this curve is steeper if the liquid fills a relatively large portion of the working chamber. It is already known to provide a hydrodynamic brake system with means for changing the extent to which the working chamber is filled with braking liquid in response to changing RPM of the rotor in order to insure that the curve representing the rate at which the braking action varies in response to changing RPM of the rotor deviates from a parabola. Depending on the intended use of the brake system, the rate at which the working chamber is filled with braking liquid can be regulated in such a way that the curve which is plotted in a rectangular coordinate system to indicate the changes in braking action in response to changing RPM of the rotor slopes upwardly or downwardly or constitutes a horizontal line.FIG. 3 in the article written by Helmut Muller and appearing on pages 203-207 of "Eisenbahntechnische Rundschau" (Volume 5, 1971, special reprint by Voith-Druck G 693/6. 71, Heidenhelm/Brenz, Western Germany) shows a hydrodynamic brake system wherein the means for regulating the extent to which the working chamber is filled with liquid comprises a spill or overflow valve having a reciprocable valve member one end face of which is subjected to the variable pressure of a gaseous fluid whereby such pressure represents the rated or desired braking action. Another end face of the valve member in the spill valve is acted upon by a liquid whose pressure is indicative of the RPM of the rotor as well as of the extent to which the working chamber is filled with liquid, i.e., of the real braking action. The valve member "compares" the two pressures and effects a change in the extent to which the working chamber is filled with liquid when the rated pressure deviates from the pressure of liquid. Thus, when the rated pressure remains constant and the RPM of the rotor increases, the pressure of liquid increases for an interval of time so that the valve member leases its position of equilibrium by moving in a first direction and temporarily opens an outlet port which allows liquid to escape from the working chamber whereby the liquid pressure acting upon the valve member decreases and the latter moves back toward its neutral position. When the RPM of the rotor decreases, the valve member again leaves its neutral position (but moves in the opposite direction) to temporarily open a port which admits additional liquid into the working chamber whereby the pressure of liquid upon the valve member increases and the latter again returns to its neutral position. Thus, the pressure of liquid upon the valve member can temporarily deviate from that pressure which is needed to counteract the pressure of gaseous fluid in order to maintain the valve member in the neutral position; however, the average value of liquid pressure remains unchanged as long as the pressure of gas (rated value) remains unchanged.The manner in which the braking action progresses in response to changes in RPM of the rotor depends on the manner in which the pressure of liquid acting upon the valve member in the spill valve varies as a function of changes in RPM of the rotor for a predetermined or preselected progress of braking action. It is simpler to examine the relationship between the liquid pressure changes and the changes in RPM of the rotor for a constant or unvarying braking action, e.i., when the curve representing the progress of the braking action at different rotational speeds of the rotor is a horizontal line. As stated above, the parameter which is used to indicate the real braking action may be the pressure of liquid, and such liquid may be that which is evacuated from the working chamber of the brake system. The pressure of this liquid rises when the RPM of the rotor increases while the braking action remains unchanged; therefore, if the pressure of liquid is maintained at a constant value (by the aforementioned regulating means), the braking action must decrease in response to increasing rotational speed of the rotor. However, if one insures that the liquid pressure decreases in response to increasing rotational speed of the rotor (again, while the braking action remains unchanged), the regulating means insures that the system produces a braking action which increases in response to increasing RPM of the rotor. Finally, the extraordinary event that the pressure of liquid remains constant at a varying RPM of the rotor and while the braking action remains unchanged, the regulating means insures that the curve representing the progress of braking action is a horizontal line.If one wishes to control the progress of braking action in a given hydrodynamic brake system, it is necessary to provide a unit which is capable of controlling the pressure of liquid acting upon the valve member of the spill valve in such a way that such pressure is representative of the real or momentary braking action of the brake system. In other words, such unit (hereinafter called measuring device) must insure that the pressure of liquid progresses in a manner which is necessary to maintain a constant braking action at different rotational speeds of the rotor. The present invention is concerned with a novel and improved measuring device and with a hydrodynamic brake system which embodies the novel measuring device.In the brake system which is described in the aforementioned article by Muller, the measuring device comprises a pressure reducing valve having a control piston and a differential piston, the latter serving to displace the control piston whereby the control piston changes the pressure of liquid which acts upon the valve member of the spill valve. An end face of the differential piston is subjected to the pressure of a liquid whose pressure equals that in a selected portion of the housing of the brake system and which is supplied by a first metering conduit. The differential piston has an annular shoulder whose area is smaller than that of the end face and which is subjected to the pressure of hot liquid that is being evacuated from the working chamber of the brake system and is admitted into the body of the pressure reducing valve by a second metering conduit. Thus, the differential piston is acted upon by two liquids and the pressure of each of these liquids depends in a different way from the rotational speed of the rotor. The second metering conduit contains two flow restrictors one of which is installed immediately upstream of the discharge end of a small pipe communicating with the second metering conduit and the other of which is installed immediately upstream of the point of communication between the pipe and the second metering conduit. The flow restrictors render it possible to reduce the pressure of liquid which flows toward the shoulder of the differential piston. The rate at which the pressure varies in response to changing RPM of the rotor at a constant braking action can be regulated by changing the ratio of the effective areas of the end face and shoulder on the differential piston and (to a certain extent) by adjusting the aforementioned flow restrictors.In many instances, each hydrodynamic brake system of a plurality of serially produced brake systems causes the braking action to vary at a different rate even if the brake systems are identical size and are produced and assembled in the same way. Such deviations of the progress of braking action from a standard progress is probably attributable to manufacturing tolerance during casting of certain parts and during subsequent machining, especially of those housing parts and pipes through which the liquid flows when the brake system is in use. Additional deviations from a desirable standard or preselected progress of the braking action develop as a result of non-uniformity of connections between the brake system proper and the aforementioned metering conduits. Therefore, it is customary to adjust the variations of pressure differential at the opposite sides of the differential piston subsequent to completed assembly of a brake system by adjusting the aforementioned flow restrictors. However, it is not unusual that the actual variation of pressure at different rotational speeds of the rotor (and while the braking action remains constant) deviates from the desired variation to such an extent that it cannot be properly adjusted by the flow restrictors alone; it is then necessary to replace the differential piston with another piston wherein the ratio of the effective cross-sectional areas of the end face and shoulder differs considerably from the ratio on the removed differential piston. As a rule, a proper ratio can be found only by resorting to extensive experimentation which is time-consuming and contributes significantly to the cost of the brake system. It is not unusual that the orginally inserted differential piston must be replaced in each of a plurality of serially produced identical or nearly identical brake systems.The situation is further aggravated if the just discussed measuring device is to be installed in differently dimensioned brake systems and/or different types of hydrodynamic brake systems. Moreover, the just discussed measuring device is not sufficiently versatile to enable the workmen to rapidly and accurately adjust the progress of the pressure in response to changing rotational speed of the rotor when it becomes necessary or desirable to change the rate at which the pressure varies in response to changing RPM of the rotor. This invariably necessitates replacement of the entire measuring device inclusive of the entire pressure reducing valve.SUMMARY OF THE INVENTIONAn object of the invention is to provide a novel and improved hydrodynamic brake system which is simpler, more reliable and less expensive than heretofore known brake systems.Another object of the invention is to provide a brake system wherein the progress of braking action at different rotational speeds of the rotor can be selected in advance with a surprisingly high degree of reproducibility and by resorting to simple, compact and inexpensive mass-produced components.A further object of the invention is to provide a novel and improved measuring device which can be used in a hydrodynamic brake system to control the means which regulates the extent to which the working chamber of the brake system is filled with braking liquid.An additonal object of the invention is to provide a measuring device which can be installed in each of a plurality of serially produced brake systems of identical type and size as well as in different types of differentially dimensioned brake systems.Still another object of the invention is to provide a measuring device which can be installed in existing as well as in new brake systems and which can furnish impulses for regulation of the extent to which the working chamber is filled with liquid, either by novel or by conventional types of valves or analogous regulating means.The invention is embodied in a hydrodynamic brake system which comprises a stator, a rotor which is rotatable by the wheel of a locomotive or by another rotary part to be braked and defines with the stator a substantially toroidal liquid-containing working chamber wherein the pressure of liquid varies when the rotor is driven at different speeds while the extent to which the chamber is filled with liquid remains unchanged, conduit means for supplying liquid to and for evacuating liquid from the chamber, adjustable regulating means for controlling the flow of liquid in the conduit means to thus determine the extent to which the chamber is filled with liquid and hence the braking action of the system at a given RPM of the rotor, and means for adjusting the regulating means. In accordance with a feature of the invention, the means for adjusting the regulating means comprises a measuring device having an overflow line including first and second end portions (e.g., first and second ports in the casing of the stator) communicating with first and second portions of the working chamber in such a way that a continuous stream of liquid flows through the overflow line in a direction from the first toward the second end portion thereof when the rotor rotates, and first and second flow restrictors disposed in the overflow line between the first and second end portions of this line. The flow restrictors are arranged to maintain the pressuree of liquid in the overflow line intermediate the flow restrictors at a first value which is indicative of the momentary or real braking action of the system; to this end, one or both flow restrictors are adjustable to change the rate of liquid flow therethrough. The regulating means includes a valve or other suitable means for comparing the first value with a selected rated value (representing the desired braking action of the system) and for changing the quantity of liquid in the working chamber when the first value deviates from the rated value or when the difference between the two values deviates from a predetermined difference.When the brake system is in use, i.e., when the rotor is driven to rotate relative to the stator, the liquid in the chamber circulates in a predetermined direction. The flow of liquid into the first end portion of the overflow line preferably takes place in a second direction making with the first direction (namely, with the first direction in the region of the first end portion of the overflow line) an angle of between 0.degree. and 90.degree., preferably between 45.degree. and 75.degree.. The direction in which the liquid flows from the second end portion of the overflow line into the chamber preferably makes with the predetermined direction (in the region of the second end portion of the overflow line) an angle of between 0.degree. and 90.degree., preferably between 5.degree. and 30.degree..When the rotor is driven, it causes liquid in the chamber to flow along the front surfaces of the stator blades, and such blades are preferably inclined with respect to the rotor axis. The first end portion of the overflow line preferably communicates with the deepmost portion of a pocket adjacent to the front surface of one such blade, and the second end portion of the overflow line preferably constitutes an injector which discharges liquid into the deepmost portion of a pocket which is adjacent to the front surface of another stator blade. The end portions of the overflow line are preferably parallel to the adjacent blades of the stator.The novel features which are considered as characteristic of the invention are set forth in particular in the appended claims. The improved hydrodynamic brake system itself, however, both as to its construction and its mode of operation, together with additional features and advantages thereof, will be best understood upon perusal of the following detailed description of certain specific embodiments with reference to the accompanying drawing.
摘要翻译： 一种流体动力制动系统，其中转子和定子之间的工作室充满制动液体的程度由阀门调节，该阀门可通过具有与工作室的两个间隔开的部分连通的溢流管线的测量装置调节， 包含两个流量限制器。 溢流管的端部以这样的方式定位，使得当转子被驱动时，连续的液体流流过溢流管。 流量限制器中的至少一个是可调节的，以便确保限流器之间的溢流管线中的液体压力表示系统的实际制动作用。 这种压力用于阀的调节，从而确保工作室被填充的程度响应于转子转速的变化而变化，以保证制动动作的再现性。
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公开(公告)号：US3913453A
公开(公告)日：1975-10-21
申请号：US50217374
申请日：1974-08-30
申请人： DEERE & CO
发明人： PARQUET DONALD JAMES
IPC分类号： B60T1/08 , F15B11/044 , F16D57/06 , F16H61/40 , F16H61/4157 , F16H61/46 , F15B13/042
CPC分类号： F16H61/4157 , B60T1/08 , F15B11/0445 , F15B2211/3055 , F15B2211/50518 , F15B2211/50545 , F15B2211/5156 , F15B2211/555 , F15B2211/613 , F15B2211/7058 , F15B2211/7128 , F16D57/06 , F16H61/46
摘要： A hydrostatic drive system for a land vehicle includes a fluid pump, a fluid reservoir, a pair of fluid motors connected to drive wheels of the vehicle, a supply line connected between the pump and motors, a return line connected between the reservoir and motors, and a retarder valve movable between open and closed positions and biased toward the closed position interposed in the return line. The retarder valve includes a servo chamber responsive to fluid pressure therein to move the retarder valve to its open position. First and second fluid passage means establish communication between the servo chamber and the supply and return lines, respectively. An additional valve means movable between open and closed positions and biased toward the closed position is interposed in the second fluid passage means and is responsive to a predetermined pressure in the return line to move to its open position. The retarder valve provides a braking effect if the motors are driven mechanically and begin to function as pumps, for example, when the vehicle is going down an incline at a speed greater than the capacity of the drive system, and the second fluid passage means and the valve therein prevents the retarder valve from completely closing and locking the wheels as long as the system is in operation.
摘要翻译： 用于陆地车辆的静液压驱动系统包括流体泵，流体储存器，连接到车辆的驱动轮的一对流体马达，连接在泵和马达之间的供应管线，连接在储存器和马达之间的返回管线， 以及可在打开和关闭位置之间运动的缓速器阀，并且朝向插入返回管线中的关闭位置偏压。 减速阀包括响应于其中的流体压力的伺服室，以将减速阀移动到其打开位置。 第一和第二流体通道装置分别建立伺服室和供应和返回管线之间的连通。 可在打开和关闭位置之间移动并且朝向关闭位置偏置的附加阀装置插入在第二流体通道装置中并且响应于返回管线中的预定压力而移动到其打开位置。 如果电动机机械驱动并开始用作泵，则减速阀提供制动效果，例如当车辆以大于驱动系统的容量的速度向下倾斜时，第二流体通道装置和 其中的阀门只要系统运行，防止延迟阀完全关闭和锁定车轮。
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