• 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:
    Emergency release device (1) for a spring brake of a rail vehicle, comprising a hydraulic pump (4) and each releasable spring brake a hydraulic cylinder (2, 3), and hydraulic lines (6, 7) between the hydraulic pump (4) and the spring brake and two antiparallel-connected check valves (7, 8), an electromagnetically operable 3/2-way emergency release selector valve with spring return (9) and a manually operable 3/2-way emergency release shut-off valve (10), which is set up to remotely control a vehicle-selective emergency release as well as being able to do it manually.
    公开号:AT520429A4
    申请号:T50308/2018
    申请日:2018-04-11
    公开日:2019-04-15
    发明作者:Hörmann Christoph
    申请人:Siemens Ag Oesterreich；
    IPC主号:
    专利说明:

    description
    Emergency release device for a spring brake of a rail vehicle.
    Technical field
    The invention relates to an emergency release device for a spring brake of a rail vehicle.
    State of the art
    Rail vehicles, in particular trams, are often equipped with so-called spring-loaded brakes, which press brake pads against brake discs by means of spring pressure and thus bring the vehicle to a standstill or keep it at a standstill. Such spring-loaded brakes are released by means of hydraulic or pneumatic pressure. These brake systems have the advantage of automatically braking the vehicle if a pressure-carrying line breaks. If a pressure-generating element, for example the hydraulic pump, fails, these brakes can no longer be released. In this case, or the breakage of a pressure-carrying line, an emergency release device is provided, which releases the spring-loaded brake of a chassis or a car manually via a separate emergency release device or by means of an emergency release connection, thus allowing a journey to a workshop. Similar spring-loaded brakes are common in trucks, the emergency solution usually being done by means of a manually operated threaded spindle.
    / 25
    201625999
    Devices of this type are also used in rail vehicles, in particular in trams and subways, but have operational disadvantages, since they can only be operated directly on the brake actuator itself. For this purpose, the driver of the vehicle must leave the driver's cab and a brake that has been released cannot be put on again easily and quickly.
    It is often desirable to be able to carry out the emergency solution directly from the driver's desk or driver's cab, with minimal operating procedures on the chassis or brake in question also being acceptable. Another requirement is to be able to carry out a chassis-selective emergency release, so that only the brake of the affected chassis or bogie is released and further brakes can continue to be operated normally. This is required in particular in trams which have a pressure generating device for each running gear or bogie, in the event of which a defect only the brake of this running gear is to be released.
    Presentation of the invention
    The invention is therefore based on the object of specifying an emergency release device for a spring-loaded brake of a rail vehicle, which can selectively release a certain brake or group of brakes and therefore requires as little manual operation as possible.
    The object is achieved by an emergency release device according to claim 1 and a rail vehicle according to claim 7.
    Advantageous refinements are the subject of subordinate claims.
    / 25
    201625999
    According to the basic idea of the invention
    Emergency release device for a spring-loaded brake of a rail vehicle, which comprises a hydraulic pump and, depending on the spring-loaded brake to be released, a hydraulic cylinder and hydraulic lines between the hydraulic pump and the spring-loaded brake are each led to a switching connection of an electromagnetically actuated 3/2-way emergency release selection valve with spring return, the root connection of the 3/2-way emergency release selection valve with spring return being led to a switching connection of a manually operated 3/2-way emergency release shut-off valve, and wherein the emergency release hydraulic line is led via a check valve to the further switching connection of the 3/2-way emergency release shut-off valve, and wherein the root connection of the 3/2-way emergency release shut-off valve tils to the hydraulic cylinders of the spring brakes to be released together in a group.
    This provides the advantage of being able to selectively emergency release a certain spring-loaded brake or a group of spring-loaded brakes, no manual intervention or operating processes on the brakes themselves being necessary, and all operating steps being able to be carried out from a central control, preferably from a driver's cabin. Another advantage is that selective braking of certain brakes can also be carried out on vehicles with a missing or defective electrical power supply, with little manual intervention on the / 25 at best
    201625999
    Brake system, in particular the associated hydraulic valves themselves.
    In particular, it is advantageous to design the electromagnetically operable 3/2-way emergency release selection valve with spring return in such a way that, when de-energized, it blocks the flow of hydraulic fluid to the spring-loaded brakes to be released together into a group. As a result, it is only necessary for this emergency valve to be energized for the duration of the emergency solution. This increases the security of the emergency solution, since the emergency solution is only maintained when the electrical power supply is maintained. If the electrical power supply is lost, the brakes are automatically reapplied.
    According to the invention, the emergency release device comprises a hydraulic pump for generating the hydraulic pressure for the emergency release of the spring-loaded brakes. This hydraulic pump should preferably be equipped with an electric and a manual drive, so that an emergency release is possible even if the power supply fails. This can be done on the one hand by means of a pump, which can alternatively be operated electrically or manually, or by means of a hand pump provided in addition to an electric pump. The hydraulic pressure that can be generated by the hydraulic pump is to be directed to the brakes or groups of brakes to be released via hydraulic lines (emergency release line).
    It is advantageous to group brakes together, especially those that also form a group as a service brake, i.e. the brakes of an axle or a chassis or bogie.
    / 25 4
    201625999
    In a supply line to an emergency brake or group of brakes, two anti-parallel check valves are to be arranged and their outputs with switching connection to an electromagnetically operated 3/2-way emergency release selection valve with spring return, the output of the check valve opening in the direction of flow towards the hydraulic cylinder that switching connection of the 3/2-way emergency release selection valve with spring return is connected, which blocks the hydraulic flow when this valve is de-energized. The root connection (outlet) of the 3/2-way emergency release selector valve with spring return is connected to a switching connection of a manually operated 3/2-way emergency release shut-off valve, the further switching connection of this 3/2-way emergency release shut-off valve is directly connected to the supply line ( Hydraulic line from the hydraulic pump) connected. The root connection (outlet) of the manually operated 3/2-way emergency release shut-off valve is connected to the or the hydraulic cylinder, which performs the emergency release of the brake.
    The manually operated 3/2-way emergency release shut-off valve makes it possible to carry out an emergency solution even if the electrical power supply fails, since the pressure in the emergency release line can be passed to the emergency release device of a brake caliper or brake caliper by manually switching this valve. The electromagnetically operated 3/2-way emergency release selection valve with spring return is bypassed. This manually operated 3/2-way emergency release shut-off valve is usually arranged in the interior of the car near the brakes to be released, so that the driver usually has to leave the driver's position for operation
    201625999 is inevitable, but the vehicle itself does not have to be left. In this operating mode, the hydraulic pressure for the emergency solution is generated by means of the manually operated hydraulic pump, which is typically arranged in or in the immediate vicinity of the driver's station. In this way, a selective brake release of a specific brake or group of brakes can also be carried out in the event of a power failure or a defective 3/2-way emergency release selection valve with spring return.
    The present invention has the advantage that after the emergency release has taken place, the hydraulic pressure in the vehicle or train widths of the emergency release hydraulic line can be reduced again, which helps to protect the hydraulic pump and prevents any leaks in the valves from accidentally releasing the brakes. This can also be done in the case of manual emergency release, since an emergency release pressure once built up in a brake caliper or brake calliper is no longer reduced due to the check valve provided in the supply line to the 3/2-way emergency release shut-off valve when the pressure in the emergency release line drops.
    If this functionality is not required, the emergency release line can also be routed directly to the one switching connection of the 3/2-way emergency release shut-off valve.
    In a further development of the invention, it is recommended to provide a pressure switch or pressure sensor for each brake or group of brakes to be released (emergency release section), which determines the pressure in the release pressure line leading to the hydraulic cylinders. In this way, the emergency solution can be recognized and appropriately displayed to the driving personnel.
    / 25
    201625999
    Another advantage of the emergency release device in question is that it offers increased security against inadvertent and only very difficult to detect self-release of the spring-loaded brakes due to leaks in the hydraulic cylinders of the brakes. These leaks can lead to the hydraulic fluid penetrating into the volume of the hydraulic cylinder provided for the emergency solution and not being able to flow away even when the pressure of the service brake (i.e. braking) is reduced. The present invention, on the other hand, offers the advantage that, if such a leak occurs, the hydraulic fluid can flow off via the valves and one of the check valves in the direction of the emergency release hydraulic pump.
    Brief description of the drawings
    The following are examples:
    Fig.1 Hydraulic circuit diagram of an emergency release device.
    Fig. 2 emergency release device in the rest position.
    Fig. 3 Remote control release.
    Fig. 4 emergency release device in the rest position.
    Fig. 5 Emergency release device released manually.
    Fig. 6 Emergency release device with direct emergency release pressure supply.
    Implementation of the invention
    1 shows an example of a hydraulic hydraulic system
    Circuit diagram of an emergency release device. An emergency release device 1 is shown, which is set up for the emergency release of two brakes. A first 2 and a second 3 hydraulic cylinder are provided, which are each assigned to a brake disc 12 and on these brake discs / 25
    201625999 can release the brake pads pressed on by spring force. For the operational release of the brakes, a brake hydraulic pump 13 is provided, in the event of failure of which the brakes can be released using the emergency release device according to the invention. For this purpose, the hydraulic cylinders 2, 3 are designed, for example, as so-called tandem cylinders, in which two caverns are provided for two hydraulic sources, the hydraulic force of the two hydraulic sources acting in each case on a common drive unit which releases the brake linings from the brake disks 12 against a spring force. The emergency release device 1 comprises a hydraulic pump 4, which directs hydraulic fluid via an emergency release hydraulic line 5 to the brakes to be released together. The exemplary embodiment shown in FIG. 1 comprises two brakes, which are each assigned, for example, to an axle of a two-axle bogie. Typically, in such configurations, the brake hydraulic pump 13 is provided once per bogie, so that if this brake hydraulic pump 13 fails, the brakes of a specific bogie can be selectively released. Furthermore, the emergency release device 1 comprises an electromagnetically actuated 3/2-way emergency release selection valve with spring return 9 and a manually operated 3/2-way emergency release shut-off valve 10. This includes a manually operated 3/2-way emergency release shut-off valve 10 equipped with a manual actuation 11, by means of which switching between the two positions of this valve can take place. In the feed lines to the switching connections of the electromagnetically actuated 3/2-way emergency release selection valve with spring return 9, a check valve 7, 8 is arranged, which are connected antiparallel to each other. There is a first check valve 7, which has a / 25th
    201625999
    Allows backflow of the hydraulic fluid in the direction of the hydraulic pump and blocks flow in the opposite direction, arranged in the line to the switching connection of the 3/2-way emergency release selection valve with spring return 9, which in the de-energized state of this 3/2-way emergency release selection valve with spring return 9 with the root connection is connected. A second check valve 8, which allows a flow of the hydraulic fluid in the direction of the hydraulic cylinders 2, 3 and blocks in the opposite direction, is arranged in the line to that switching connection of the 3/2-way emergency release selection valve with spring return 9, which in the de-energized state of this third / 2-way emergency release selection valve with spring return 9 is not connected to the root connection. The root connection of the 3/2-way emergency release selection valve with spring return 9 is connected to that switching connection of the manually operated 3/2-way emergency release shut-off valve 10, which is in the rest position of this valve, which is given in a remote-operated emergency release operation, with the root connection of this 3 / 2-way emergency release shut-off valve 10 is connected. The further switching connection of the 3/2-way emergency release shut-off valve 10 is connected to the emergency release hydraulic line 5 via the check valve 8. The exit, i.e. the root connection of the 3/2-way emergency release shut-off valve 10 is connected to the associated hydraulic cylinders 2, 3 by means of a release pressure line.
    The possible switching positions of the valves in the individual operating modes (brakes not released, remotely released, manually released) are subsequently shown in FIGS. 2 to 5.
    2 shows by way of example and schematically showing the emergency release device 1 of Figure 1 in highly abstract 9/25 9
    201625999
    Representation at rest. The valves 9, 10 are in their basic position, in which the 3/2-way emergency release selection valve with spring return 9 is not energized (not activated) and the 3/2-way emergency release shut-off valve 10 is in the position required for remote-controlled operation located. In this basic position, any hydraulic pressure that may occur in the emergency release hydraulic line 5 cannot reach the release pressure line 6, since the paths to this line are blocked. A single pressurization of the emergency release hydraulic line 5 can therefore not lead to an unintentional release of the brakes.
    3 shows an example and schematically the emergency release device 1 from FIG. 2, the valves 9, 10 being in their position for the remote-controlled emergency release. The 3/2-way emergency release shut-off valve 10 is in the same position as in the rest position and the 3/2-way emergency release selection valve with spring return 9 is activated (energized), so that a path for the hydraulic fluid is switched via the second check valve 8 is. In this position of the valves 9, 10, a pressure can thus be built up in the release pressure line 6 and the brakes can thereby be released. After emergency release, i.e. Building up a sufficient pressure in the release pressure line 6, the pressure in the emergency release hydraulic line 5 can be reduced again, since a backflow of the hydraulic fluid through the check valve 8 is prevented.
    4 shows an example and schematic of the emergency release device 1 from FIG. 2 in its undissolved basic position for the manually effected emergency release operation. If the power supply fails or the / 25 10 fails
    201625999 Electromagnetically actuated 3/2-way emergency release selection valve with spring return 9, an emergency release device 1 according to the invention can also be used for emergency release of a specific brake or group of brakes. The position of the valves 9, 10 corresponds to that of the basic position for the remote-controlled emergency solution.
    5 shows an example and schematically the
    Emergency release device 1 from Figure 4 in its manual release position. The 3/2-way emergency release selection valve with spring return 9 is unchanged in its position, since remote control of this valve 9 is not possible. The manually operated 3/2-way emergency release shut-off valve 10 is switched so that it forms a connection between the emergency release hydraulic line 5 and the release pressure line 6, so that hydraulic pressure can reach the brakes to be released. The 3/2-way emergency release shut-off valve 10 is designed as a manually operated valve in the immediate vicinity of the brakes to be released.
    6 shows an example of an emergency release device 1 with a direct supply of the emergency release pressure to the 3/2-way emergency release shut-off valve 10. An embodiment of the invention is shown in which the hydraulic pressure prevailing in the emergency release hydraulic line 5 is directly at a switching input of the 3/2-way emergency release shut-off valve 10. The check valve 8 is arranged in this embodiment between the emergency release hydraulic line 5 and a switching input of the 3/2-way emergency release selection valve with spring return 9. It is therefore necessary to maintain the pressure in the emergency release hydraulic line 5 as long as an emergency solution has been carried out / 25 '
    Should be 201625999. The valves 9, 10 are in the for a manual
    Emergency solution required position.
    / 25 12
    201625999
    List of names
    2
    7
    11
    emergency release
    First hydraulic cylinder Second hydraulic cylinder Hydraulic pump Emergency release hydraulic line Release pressure line
    First check valve
    Second check valve
    3/2-way emergency release selection valve with spring return
    3/2-way emergency release shut-off valve Manual actuation
    brake disc
    Brake release hydraulic pump / 25
    201625999
    权利要求:
    Claims (8)
    [1]
    claims
    1. Emergency release device (1) for a spring-loaded brake of a rail vehicle, comprising a hydraulic pump (4) and a hydraulic cylinder (2, 3) for each spring-loaded brake to be released, and hydraulic lines (6,
    7) between the hydraulic pump (4) and the spring-loaded brake, characterized in that two anti-parallel check valves (7, 8) are arranged in the emergency release hydraulic line (5) leading to a group of spring-loaded brakes, the outputs of which are each connected to a switching connection of an electromagnetically actuated one 3/2-way emergency release selection valve with spring return (9) are guided, the root connection of the 3/2-way emergency release selection valve with spring return (9) being led to a switching connection of a manually operated 3/2-way emergency release shut-off valve (10), and wherein the emergency release hydraulic line (5) is guided via the check valve (8) to the further switching connection of the 3/2-way emergency release shut-off valve (10), and wherein the root connection of the 3/2-way emergency release shut-off valve (10) to the Hydraulic cylinder (2, 3) which is guided in a group to be released spring brake.
    [2]
    2. Emergency release device (1) according to claim 1, characterized in that the electromagnetically actuated 3/2-way emergency release selection valve with spring return (9) in the de-energized state blocks the flow of hydraulic fluid to the spring brake brakes to be released together in a group.
    15/25 '
    201625999
    [3]
    3. Emergency release device (1) according to one of claims 1 or
    2, characterized in that the 3/2-way emergency release shut-off valve (10) is designed to be manually operable.
    [4]
    4. Emergency release device (1) according to one of claims 1 to
    3, characterized in that the spring-loaded brakes to be released together to form a group are the spring-loaded brakes of an axle or a running gear.
    [5]
    5. Emergency release device (1) according to one of claims 1 to
    4, characterized in that the hydraulic pump (4) comprises an electric and a manual drive.
    [6]
    6. Emergency release device (1) according to one of claims 1 to
    5, characterized in that the hydraulic cylinder (2,
    3) forms a unit with a spring-loaded cylinder of a brake.
    [7]
    7. Emergency release device (1) according to one of claims 1 to
    6, characterized in that the emergency release line (5) is led directly to a switching connection of the 3/2-way emergency release shut-off valve (10).
    [8]
    8. Rail vehicle, comprising an emergency release device (1) according to one of claims 1 to 7.
    16/25
    201625999
    17/25 1
    201625999
    Fig.2
    Fig. 3
    18/25 2
    201625999
    5
    Fig. 5
    19/25 3
    201625999
    Fig. 6
    20/25 4
    201625999
    AT
    claims
    1. Emergency release device (1) for a spring-loaded brake of a rail vehicle, comprising a hydraulic pump (4) and, depending on the spring-loaded brake to be released, a hydraulic cylinder (2, 3), and hydraulic lines (6, 7) between the hydraulic pump (4) and the spring-loaded brake, characterized that two anti-parallel check valves (7, 8) are arranged in the emergency release hydraulic line (5) leading to a group of spring-loaded brakes, the outputs of which are each connected to a switching connection of an electromagnetically actuated 3/2-way emergency release selection valve with spring return (9) , the root connection of the 3/2-way emergency release selection valve with spring return (9) being connected to a switching connection of a manually operated 3/2-way emergency release shut-off valve (10), and the emergency release hydraulic line (5) via the check valve (8) the further switching connection of the 3/2-way emergency release shut-off valve (10) t, and the root connection of the 3/2-way emergency release shut-off valve (10) to the hydraulic cylinders (2, 3) of the spring brakes to be released together in a group is guided.
    2. Emergency release device (1) according to claim 1, characterized in that the electromagnetically actuated 3/2-way emergency release selection valve with spring return (9) in the de-energized state blocks the flow of hydraulic fluid to the spring brake brakes to be released together in a group.
    1421/25 (LAST CLAIMS)
    201625999
    AT
    3. Emergency release device (1) according to one of claims 1 or
    2, characterized in that the 3/2-way emergency release shut-off valve (10) is designed to be manually operable.
    4. Emergency release device (1) according to one of claims 1 to
    3, characterized in that the spring-loaded brakes to be released together to form a group are the spring-loaded brakes of an axle or a running gear.
    5. Emergency release device (1) according to one of claims 1 to
    4, characterized in that the hydraulic pump (4) comprises an electric and a manual drive.
    6. Emergency release device (1) according to one of claims 1 to
    5, characterized in that the hydraulic cylinder (2,
    3) forms a unit with a spring-loaded cylinder of a brake.
    7. Emergency release device (1) according to one of claims 1 to
    6, characterized in that the emergency release line (5) is led directly to a switching connection of the 3/2-way emergency release shut-off valve (10).
    8. Rail vehicle, comprising an emergency release device (1) according to one of claims 1 to 7.
    22/25 [LAST CLAIMS]
    201625999
    1.3
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    AT391454B|1990-10-10|BRAKE DEVICE FOR A VEHICLE, IN PARTICULAR A GEAR VEHICLE
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    同族专利:
    公开号 | 公开日
    AT520429B1|2019-04-15|
    WO2019197453A1|2019-10-17|
    CN112041209A|2020-12-04|
    EP3758990A1|2021-01-06|
    EP3758990B1|2022-03-16|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE3522432A1|1985-06-22|1986-07-10|Daimler-Benz Ag, 7000 Stuttgart|Pressure medium controlled parking brake for motor vehicles|
    DE102012202761A1|2012-02-23|2013-08-29|Siemens Aktiengesellschaft|Brake arrangement of a vehicle|
    EP2990279A2|2014-08-26|2016-03-02|Jungheinrich Aktiengesellschaft|Valve assembly for a spring-loaded brake|DE102019207794A1|2019-05-28|2020-12-03|Siemens Mobility GmbH|Brake shut-off arrangement and method for operating a brake shut-off arrangement|BE792404A|1971-12-08|1973-03-30|Knorr Bremse Gmbh|PRESSURE FLUID BRAKING DEVICE FOR VEHICLES, INCLUDING BRAKE CYLINDER WITH ELASTIC ACCUMULATOR|
    SE440891B|1982-03-16|1985-08-26|Sab Nife Ab|HYDRAULIC BRAKING SYSTEM FOR VEHICLES, SPECIFICALLY LIGHTED RAILWAY VEHICLES|
    GB8520280D0|1985-08-13|1985-09-18|Lucas Ind Plc|Brake actuation systems|
    DE3531896C2|1985-09-06|1990-03-29|Knorr-Bremse Ag, 8000 Muenchen, De|
    CN106043261B|2016-06-22|2019-02-26|中车株洲电力机车有限公司|Gas-liquid composite braking acting device and suspension type monorail vehicle composite braking system|AT522333B1|2019-07-30|2020-10-15|Siemens Mobility Austria Gmbh|Emergency release device for a vehicle brake|
    法律状态:
    2021-03-15| PC| Change of the owner|Owner name: SIEMENS MOBILITY AUSTRIA GMBH, AT Effective date: 20210118 |
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50308/2018A|AT520429B1|2018-04-11|2018-04-11|Emergency release device for a spring-loaded brake of a rail vehicle|ATA50308/2018A| AT520429B1|2018-04-11|2018-04-11|Emergency release device for a spring-loaded brake of a rail vehicle|
    PCT/EP2019/059058| WO2019197453A1|2018-04-11|2019-04-10|Emergency release device for a spring-loaded brake of a rail vehicle|
    EP19720409.2A| EP3758990B1|2018-04-11|2019-04-10|Emergency release arrangement for a spring-loaded brake of a rail vehicle|
    CN201980025278.5A| CN112041209A|2018-04-11|2019-04-10|Emergency release device for a spring-loaded brake of a rail vehicle|
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