EP3381763A1 - System und weichenantrieb für eisenbahnweichen - Google Patents
System und weichenantrieb für eisenbahnweichen Download PDFInfo
- Publication number
- EP3381763A1 EP3381763A1 EP18163275.3A EP18163275A EP3381763A1 EP 3381763 A1 EP3381763 A1 EP 3381763A1 EP 18163275 A EP18163275 A EP 18163275A EP 3381763 A1 EP3381763 A1 EP 3381763A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- switch
- rod
- locking
- unlocking
- control rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
- B61L5/10—Locking mechanisms for points; Means for indicating the setting of points
Definitions
- the present invention relates to the railway technical field and in particular it relates to an improved switch machine for railroad switches, in particular used in highspeed switches.
- the switch machines of the railroad switches generally provide at least one shifting actuator, which translates, by movement transmission means, the switch points of the railroad switch between two limit positions. More precisely, at the above mentioned limit positions, one switch point is drawn to the respective switch stock rail and is, therefore, called closed-by switch point, instead the other switch point is far from the respective switch stock rail and is called, therefore, far-removed switch point.
- the switch point that in the previous limit position was the closed-by switch point, is arranged at a predetermined distance from the respective switch stock rail and, therefore, becomes the far-removed switch point, instead the switch point that was previously far-removed is arranged close to the respective switch stock rail and, therefore, becomes the closed-by switch point.
- the movement from a limit position to the other is caused, as above disclosed, by an actuator, usually a hydraulic actuator having a predetermined actuation stroke arranged along an actuation direction.
- the switch machines of known type furthermore, provide locking/unlocking members, also known as switch point lock means, that block the switch points in one of the above disclosed limit positions.
- the switch point lock means are moved from an unlocking configuration to a locking configuration through an overstroke of the actuator along the actuation direction.
- the switch machines of prior art have the drawback that if one of the switch points, in particular the one that acts as closed-by switch point, disengages from the operating tie-rod, for example at the respective "paw", owing to a damage of the above mentioned movement transmission means, the system can fail to detect the technical failure. In this situation, in fact, in the switch machines of prior art the operating tie-rod continues to be moved along the above mentioned movement direction by the actuation group anyway.
- a switch machine is configured, in particular has a dimension, such that it is possible to mount it on a rail sleeper of the railroad switch.
- a switch machine for railroad switches comprising:
- the actuation group can comprise:
- the above disclosed translation of the actuation slider and of the cam portion integral to it, along the fixed stem of the actuator is adapted to cause a rotation of the movable body about a rotation axis, in particular orthogonal to the movement direction, in order to cause the movable body to move from the unlocking position to the locking position, with respect to the fixed body.
- control device is configured in such a way to prevent the movable body from rotating about the rotation axis and, therefore, from moving from the unlocking position to the locking position, if the first and the second control rods are not positioned in the above mentioned respective predetermined positions.
- the control device provides mutual engagement members positioned in predetermined positions of the first and of the second control rod and adapted to engage with respective mutual engagement members integral to the movable body only if the first and the second control rod are positioned in the predetermined positions.
- the locking/unlocking group is adapted to move from the unlocking configuration to the locking configuration only if both the mutual engagement members are mutually engaged.
- the mutual engagement members can be gears, for example gear wheels, adapted to be in gear only if the control rods are positioned in the above mentioned predetermined positions, in particular with respect to the locking/unlocking group.
- the control device comprises:
- the actuator is a double-effect hydraulic actuator.
- the hydraulic actuator is provided with a first and a second feeding channel of an actuation fluid and is configured in such a way to define a first and a second opposite push chambers. These are hydraulically connected to the first and to the second feeding channel, respectively.
- the actuation slider is driven to slide in a direction, or in the opposite direction, by pressure exerted on the first and/or on the second push chamber, by the actuation fluid.
- the movable body provides a first and a second engagement portion adapted to engage, respectively, in a first and in a second locking seat provided in the fixed body, respectively, at a first and at a second position of the fixed body.
- each recessed portion can be a circumferential groove made on a respective control rod.
- each touching arm provides a contact portion substantially "fork-shaped" having a first and a second end arranged, in use, at opposite sides of the same control rod. More precisely, each end of the same touching arm is adapted to be positioned alternatively and selectively in the same circumferential groove, but at the opposite side with respect to the control rod.
- a switch machine for railroad switches 1 essentially provides a movement group 20 comprising at least an operating tie-rod having a first and a second portion 20a, 20b that are integrally movable with each other. More in particular, the portions 20a and 20b of the operating tie-rods engage, at the opposite ends 21 and 22, a first and a second switch point 101 and 102 by respective movement transmission members 40a and 40b.
- the, or each, operating tie-rod 20a, 20b is arranged to translate along a movement direction 120, that is in particular substantially orthogonal to the tracks 111, 112, of railway tract at which the switch machine 1 is positioned.
- the translation of the portions 20a and 20b of operating tie-rod causes a movement of the first and of the second switch point 101 and 102 between two limit positions.
- an actuation group 70 is provided adapted to actuate the translation of the operating tie-rod 20, or of each portion 20a, 20b of the same, along the above mentioned movement direction 120.
- the switch machine 1 furthermore, provides, a locking/unlocking group 50 arranged to move from a locking configuration, in which it prevents the operating tie-rod 20 from moving along the movement direction 120, to an unlocking configuration, in which, instead, it allows the above disclosed translation.
- the locking/unlocking group 50 also known as switch point lock means, is configured in such a way to arrange itself in the locking configuration when the operating tie-rod 20, or each portion 20a, 20b of the same, is positioned in a position such that one between the first and the second switch point 101, 102 is positioned in a position closed to respective switch stock rail 111, 112 and the other in the far position from the respective switch stock rail.
- the switch machine 1 provides a first control rod 31 and a second control rod 32, advantageously but not essentially coaxially arranged one with respect to the other, adapted to translate independently one with respect to the other, along a direction parallel to the above mentioned movement direction 120. More precisely, the first and the second control rod 31 and 32 provide a respective end 31a, 32a that is fixed, respectively, to the first switch point 101 and to the second switch point 102.
- first and the second control rod 31 and 32 are, respectively, fixed to the first and to the second switch point 101 and 102 in engagement points B and B' different from the engagement points A and A' at which the ends 21 and 22 of the portions 20a and 20b of operating tie-rod 20 are fixed to the switch points 101 and 102. More in particular, the first and the second control rod 31 and 32 are fixed to the switch points 101 and 102 by movement transmission members 38a, 39a different from the movement transmission members 40a and 40b through which the ends 21 and 22 of the portions 20a and 20b of operating tie-rod 20 are fixed to the switch points 101 and 102 ( figure 2 ).
- each control rod 31 and 32 are, furthermore, supported by a support body 34.
- the actuation group 70 comprises an actuator 71 provided with a fixed stem 72, which is supported at opposite support portions 76a and 76b.
- An actuation slider 75 is, then, provided slidingly mounted on the fixed stem 72 and provided with a cam portion 73.
- the actuation group 70 furthermore, provides a movable body 41 housed within a housing 42 integral to, or each, operating tie-rod 20a, 20b. More in particular, each portion 20a and 20b of the operating tie-rod, in addition to the above disclosed respective end 21 and 22 connected, as above anticipated, to a respective switch point 101 and 102, provides another end 23 and 24 fixed to a containment body 45 in which the above disclosed housing 42 of the movable body 41 is provided.
- the movable body 41 and the cam portion 73 are configured in such a way that the translation of actuation slider 75 and, therefore, of cam portion 73 integral to it, along the fixed stem 72, causes the movable body 41 to move from a locking position, in which it is arranged to engage in a fixed body 43, in particular integral to a rail sleeper 200 of the railway tract at which the switch machine 1 is provided, in order to prevent the operating tie-rod 20, or each its portion 20a, 20b, to an unlocking position, in which the movable body 41 is not engaged in the fixed body 43 and is arranged to translate integrally to the, or each, operating tie-rod 20a, 20b, along the movement direction 120.
- the movement from the unlocking configuration to the locking configuration of locking/unlocking group 50 is caused, in particular, by an overstroke of actuator 71 along an actuation direction parallel to the movement direction 120 of operating tie-rod 20a, 20b.
- the translation of the actuation slider 75, and in particular of cam portion 73, along the stem 72 of the actuator 71, causes a rotation of the movable body 41 about a rotation axis 141 that is orthogonal to the movement direction 120.
- the movable body 41 is pivoted to the containment body 45 at a pivot 44.
- the cam portion 73 provides a pushing surface 37 arranged to cooperate with at least a guide roller, for example 2 guide rollers 47 and 48, mounted free to rotate about a rotation shaft integral to the above disclosed movable body 41, in order to guide the movement of the movable body 41 into the housing 42.
- a guide roller for example 2 guide rollers 47 and 48
- the pushing surface 37 provides a first and a second portion 37a and 37b with opposite inclination, and connected by a straight portion 37c, in such a way to substantially define a trapezium-shaped cam portion (see example of figure 12 ).
- the guide rollers 47 and 48 are adapted to be positioned into contact with the above mentioned pushing surface 37 by which they are guided towards above, or below, depending on the translation direction of cam portion 73, causing, alternatively a translation along a movement direction 120, or a clockwise, or an anticlockwise rotation, of movable body 41 about the rotation axis 141.
- the movement is caused of movable body 41, in particular of a first engagement portion 41a, or of a second engagement portion 41b, of the same, into, or out (depending on the direction of rotation that has been driven), respectively of a first, or of a second, locking seat 43a, 43b provided in the fixed body 43, at the locking position, or the unlocking position, respectively.
- a control device 60 is furthermore provided configured in such a way to prevent the locking/unlocking group 50 from moving from the unlocking configuration to the locking configuration if both the first and the second control rod 31 and 32, and, accordingly, if the first and the second switch point 101, 102, to which they are fixed, are not positioned in respective predetermined correct positions.
- control device 60 is configured in such a way to prevent movable body 41 from rotating about the rotation axis 141 and, therefore, from moving from the unlocking position to the locking position, if the first and the second control rod 31 and 32 are not positioned in the respective predetermined correct positions (see for example figure 11 ). More in particular, the control device 60 prevent the engagement portions 41a, or 41b, of movable body 41, depending if in that operative condition the first, or the second, switch point 101, 102, is the closed-by switch point, from engaging in the respective locking seat 43a, or 43b of the fixed body 43.
- the above disclosed situation i.e. the missing positioning of both the control rods 31 and 32 in the predetermined correct positions, can occur, for example, because one of the 2 switch points 101, or 102, disengages from the operating tie-rod 20, for example owing to a disengagement occurred at the respective "paw".
- the operating tie-rod continue, however, to be moved along the above disclosed movement direction by the actuation group e, therefore, the system does not detect the failure occurring.
- the technical solution proposed by the present invention allows to detect the above disclosed drawback, because the control device 60 "detects" a relative motion between the control rod 31 and the containment body 45, to which the support body 34 is integral, and, therefore, does not permit the locking/unlocking group 50 to move from the unlocking configuration to the locking configuration.
- the control rod 31, or 32, fixed to it at an end is not positioned in the correct predetermined position.
- the control device 60 owing to the missing detection of the correct position of the control rods 31, 32, does not allow to the locking/unlocking group 50 to move in the locking configuration.
- the switch machine 1, according to the present invention allows to considerably increase, with respect to the prior art solutions, the level of safety of the railway tract where it is installed.
- control device 60 is arranged to move from a consent position, in which it allows the locking/unlocking group 50 to move from the unlocking configuration to the locking configuration, if the control rods 31 and 32 are positioned in the correct positions ( figure 10 ), to an impediment position, in which it prevents the locking/unlocking group 50 from moving from the unlocking configuration to the locking configuration, if the control rods 31 and 32, are, instead, not positioned in the correct predetermined positions ( figure 11 ).
- control device 60 provides a first and a second recessed portion 35 and 36 each of which made at a predetermined position of a respective control rod 31, 32.
- the control device 60 furthermore, provides a first and a second touching arm 65 and 66 integral to the movable body 41, in particular at opposite sides of it, advantageously at, or in proximity of, the engagement portions 41a, 41b. More in particular, the touching arms 65 and 66 can protrude towards the control rods 31 and 32 through respective apertures, or windows, 46a and 46b provided in the containment body 45.
- the touching arms 65 and 66 are adapted to move in a respective recessed portion 35, 36 of a respective control rod 31, 32, permitting the movable body 41 to rotate about the rotation axis 141 in order to move from the unlocking position to the locking position, only if both the first and the second control rod 31 and 32 are positioned in the above disclosed predetermined correct position with respect to the locking/unlocking group 50. Instead, if, for example owing to the disengagement of a switch point from the operating tie-rod, one of the two control rods 31, or 32, is not positioned in the correct position, the rotation of the movable body 41, that is caused from pushing surface 37, is stopped.
- the corresponding touching arm 65, or 66 is not able to make a complete rotation owing to the greater thickness of the control rod 31, or 32, with respect to the recessed portion 35, or 36, and therefore, the engagement portion of movable body 41 is not able to exit the locking seat 43a, or 43b, of fixed body 43.
- the control device 60 "does not permit" the locking/unlocking group 50 to move from the unlocking configuration to the locking configuration.
- each recessed portion 35, 36 is a circumferential groove made in a respective control rod 31, 32.
- each touching arm 65, 66 can have a contact portion 67, 68 substantially "fork-shaped", i.e. substantially “U-shaped”, or "V-shaped", and having a first and a second end 67a, 67b and 68a, 68b arranged, in use, at the opposite sides of the same control rod 31, 32. More precisely, when the above disclosed movable body 41 is positioned at the first locking position, i.e.
- each of the first and second end 67a,67b, and 68a,68b of a same touching arm 65, and 66 are arranged to move alternatively and selectively, in the same circumferential groove 35, or 36, but at the opposite side with respect to control rod 31, or 32, depending on the engagement portions 41a, 41b of movable body 41 and the respective engagement seats 43a, 43b of fixed body 43, are arranged in the first locking position ( figures 7-9 ), or in the second locking position ( figure 14 ).
- the above disclosed actuator 71 can be a hydraulic actuator, in particular a double-effect hydraulic actuator. More in particular, the hydraulic actuator 71 provides a first and a second feeding channel 74a and 74b of an actuation fluid. In particular, the hydraulic actuator 71 is configured in such a way to define a first and a second opposite push chambers 77 and 78. These are, in particular, hydraulically connected to the first and to the second feeding channel 74a and 74b, respectively. The actuation slider 75 is, therefore, driven to slide in a direction, or in the opposite direction, by pressure exerted in the first and/or in the second push chamber 77, or 78, by actuation fluid.
- an electric control device of the switch points is furthermore provided, that is not in figure for reasons of simplicity, but of known type in the technical field.
- control device prevents the locking/unlocking group from moving from the unlocking configuration to the locking configuration when the control rods are not positioned in the respective predetermined positions
- the skilled person in the art will have, however, no difficulty to adopt the solution according to the present invention also in the case that the control device is configured in such a way to prevent the locking/unlocking group from moving from the locking configuration to the unlocking configuration in the same condition, i.e. when the control rods are not positioned in the respective predetermined positions.
- a system for operating a multipoint switch machine provides a plurality of switch machines for railroad switches as above disclosed and illustrated in the figures from 1 to 14.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT102017000035928A IT201700035928A1 (it) | 2017-03-31 | 2017-03-31 | Cassa di manovra perfezionata per deviatoi ferroviari |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3381763A1 true EP3381763A1 (de) | 2018-10-03 |
| EP3381763B1 EP3381763B1 (de) | 2020-01-08 |
Family
ID=59683812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP18163275.3A Active EP3381763B1 (de) | 2017-03-31 | 2018-03-22 | System und weichenantrieb für eisenbahnweichen |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP3381763B1 (de) |
| IT (1) | IT201700035928A1 (de) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111535086A (zh) * | 2020-06-10 | 2020-08-14 | 中铁宝桥集团有限公司 | 磁浮道岔小位移转辙锁定一体装置及方法 |
| CN114475702A (zh) * | 2022-01-24 | 2022-05-13 | 中车长江运输设备集团有限公司 | 一种枢轴型悬挂式单轨多开道岔系统及其辅助转辙装置 |
| CN116495028A (zh) * | 2023-05-06 | 2023-07-28 | 通号万全信号设备有限公司 | 一种新型的侧装式电液转辙机 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111994127B (zh) * | 2020-08-18 | 2025-02-18 | 西安铁路信号有限责任公司 | 一种一机多点牵引道岔的转换系统 |
| CN116534079B (zh) * | 2023-05-26 | 2025-12-23 | 中建空列（北京）科技有限公司 | 用于单轨轨道交通的单摆臂转向系统 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2928194B1 (de) * | 1979-07-12 | 1980-10-16 | Siemens Ag | Weichenantrieb |
| DE3511891A1 (de) * | 1985-04-01 | 1986-10-16 | Siemens AG, 1000 Berlin und 8000 München | Stell-, sicherungs- und ueberwachungseinrichtung an weichen |
| DE29610174U1 (de) * | 1996-05-29 | 1996-08-14 | Siemens AG, 80333 München | Einrichtung zur Prüferstangenbrucherkennung |
| DE19535578A1 (de) * | 1995-09-14 | 1997-03-20 | Siemens Ag | Weichenantrieb mit Innenverschluß |
-
2017
- 2017-03-31 IT IT102017000035928A patent/IT201700035928A1/it unknown
-
2018
- 2018-03-22 EP EP18163275.3A patent/EP3381763B1/de active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2928194B1 (de) * | 1979-07-12 | 1980-10-16 | Siemens Ag | Weichenantrieb |
| DE3511891A1 (de) * | 1985-04-01 | 1986-10-16 | Siemens AG, 1000 Berlin und 8000 München | Stell-, sicherungs- und ueberwachungseinrichtung an weichen |
| DE19535578A1 (de) * | 1995-09-14 | 1997-03-20 | Siemens Ag | Weichenantrieb mit Innenverschluß |
| DE29610174U1 (de) * | 1996-05-29 | 1996-08-14 | Siemens AG, 80333 München | Einrichtung zur Prüferstangenbrucherkennung |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111535086A (zh) * | 2020-06-10 | 2020-08-14 | 中铁宝桥集团有限公司 | 磁浮道岔小位移转辙锁定一体装置及方法 |
| CN114475702A (zh) * | 2022-01-24 | 2022-05-13 | 中车长江运输设备集团有限公司 | 一种枢轴型悬挂式单轨多开道岔系统及其辅助转辙装置 |
| CN114475702B (zh) * | 2022-01-24 | 2024-02-23 | 中车长江运输设备集团有限公司 | 一种枢轴型悬挂式单轨多开道岔系统及其辅助转辙装置 |
| CN116495028A (zh) * | 2023-05-06 | 2023-07-28 | 通号万全信号设备有限公司 | 一种新型的侧装式电液转辙机 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3381763B1 (de) | 2020-01-08 |
| IT201700035928A1 (it) | 2018-10-01 |
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