CN111994127A - Conversion system for one-machine multi-point traction turnout - Google Patents
Conversion system for one-machine multi-point traction turnout Download PDFInfo
- Publication number
- CN111994127A CN111994127A CN202010833520.6A CN202010833520A CN111994127A CN 111994127 A CN111994127 A CN 111994127A CN 202010833520 A CN202010833520 A CN 202010833520A CN 111994127 A CN111994127 A CN 111994127A
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- point
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- shaped crank
- crank arm
- locking mechanism
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- 238000006243 chemical reaction Methods 0.000 title abstract description 14
- 230000007246 mechanism Effects 0.000 claims abstract description 69
- 238000009434 installation Methods 0.000 claims abstract description 53
- 238000005452 bending Methods 0.000 claims abstract description 7
- 238000001514 detection method Methods 0.000 claims abstract description 5
- 241001669679 Eleotris Species 0.000 claims abstract description 4
- 238000006073 displacement reaction Methods 0.000 claims description 17
- 230000009471 action Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 2
- 241000283707 Capra Species 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
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
- B61L5/02—Mechanical devices for operating points or scotch-blocks, e.g. local manual control
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Railway Tracks (AREA)
Abstract
The invention relates to a conversion system for a one-machine multipoint traction turnout, which is characterized in that: at near the sleeper one side interval fixed multiunit installation basis (3) of switch track traction point, arrange fixed multiunit drive mechanism point along the rail interval through installation basis (3) and switch, the drive mechanism point includes: the device comprises a first outer locking mechanism (1), a second outer locking mechanism (12), a third outer locking mechanism (14), a detection rod (2), an installation base (3), a point switch (4), a first installation pull rod (5), a bending pull rod (6), a first T-shaped crank arm (7), a first crank seat (8), a first connecting rod (9), a second installation pull rod (10), a second T-shaped crank (11), a second connecting rod (13), a third installation pull rod (15), a third T-shaped crank arm (16) and a close-fit checker (17). The switching system for the one-machine multi-point traction turnout is compact in structure, and can reduce the number of switch machines and control cables for the turnout with two or more traction points.
Description
Technical Field
The invention belongs to track traffic turnout conversion equipment, in particular to a conversion system for a one-machine multi-point traction turnout, which is suitable for turnout conversion of track traffic.
Background
In the switch conversion of a group of switches designed with two or more traction points, the conventional switch conversion mode is to configure one switch machine for each traction point, which is called multi-machine multi-point traction switch.
Disclosure of Invention
The invention aims to provide a one-machine multi-point traction turnout conversion system with a compact structure, which can reduce a point switch and the number of control cables for turnouts with two or more traction points.
In order to solve the problems, the technical scheme of the invention is as follows: the utility model provides a switching system of a quick-witted multiple spot traction switch, characterized by: at the fixed multiunit installation basis of sleeper one side interval near switch track traction point, follow the fixed multiunit drive mechanism point of rail interval arrangement through installation basis and switch, the drive mechanism point includes: the device comprises a first outer locking mechanism, a second outer locking mechanism, a third outer locking mechanism, a detection rod, an installation foundation, a point switch, a first installation pull rod, a turning pull rod, a first T-shaped crank arm, a first crank seat, a first connecting rod, a second installation pull rod, a second T-shaped crank arm, a second safety connecting rod, a third installation pull rod, a third T-shaped crank arm and a close-fit checker; the first outer locking mechanism, the second outer locking mechanism and the third outer locking mechanism are respectively fixed at the positions of a first traction point, a second traction point and a third traction point, a point switch is arranged at the position of the first traction point and connected with the traction first outer locking mechanism, the point switch is vertically installed with a turnout, the point switch is provided with a first installation pull rod and a bent pull rod at the same side of the point switch when the point switch is used for converting and locking the first traction point of the switch point, and the output force of the point switch and the linear displacement of the action rod are transmitted to the vertical arm of the first T-shaped crank arm; the first T-shaped connecting lever is connected with the first connecting lever rotating shaft, and the first T-shaped connecting lever can rotate around the first connecting lever rotating shaft under the pushing and pulling effects of the bending pull rod, so that the force and displacement output by the point switch are output from the horizontal arm of the T-shaped connecting lever, and the rotary motion is converted into the axial motion of the first connecting rod along the direction parallel to the length direction of the turnout.
The second outer locking mechanism is fixed at the position of a second traction point, one end of the first connecting rod is connected with the first T-shaped crank arm, the other end of the first connecting rod is connected with the horizontal arm of the second T-shaped crank arm, and the rotation of the first T-shaped crank arm is transmitted to the vertical arm of the second T-shaped crank arm; the second installation pull rod is connected with the vertical arm of the second T-shaped crank arm, the second installation pull rod is simultaneously connected with the second outer locking mechanism, and the first connecting rod transmits power and displacement to the second outer locking mechanism through the second T-shaped crank arm.
The third external locking mechanism is fixed at the position of a third traction point, one end of the second connecting rod is connected with the horizontal arm of the second T-shaped crank arm, the other end of the second connecting rod is connected with the horizontal arm of the third T-shaped crank arm, and the rotation of the second T-shaped crank arm is transmitted to the vertical arm of the third T-shaped crank arm; the third installation pull rod is connected with the vertical arm of the third T-shaped crank arm, the third installation pull rod is simultaneously connected with the third outer locking mechanism, and the second connecting rod transmits power and displacement to the third outer locking mechanism through the third T-shaped crank arm.
The installation foundation of the first T-shaped crank arm and the installation foundation of the switch machine are arranged together, and the installation foundation of the second T-shaped crank arm and the installation foundation of the third T-shaped crank arm are part of the installation foundation of the switch machine.
The first connecting rods and the second connecting rods are two groups and are symmetrically arranged on the parallel arms of the T-shaped crank arms.
The second mounting pull rod and the third mounting pull rod are pull rod structures with adjustable lengths.
And a close contact detector is fixed on one side of the second outer locking mechanism to detect the close contact condition of the second traction point or the third traction point of the switch rail.
And the second traction point and the third traction point are positioned on the same side of the point switch.
The invention has the advantages that: the mode that a switch machine is adopted to pull a plurality of traction points to convert turnouts is adopted, the connecting rod piece of each traction point is provided with adjustment quantity, and each traction point can be adjusted respectively, so that synchronous conversion of each traction point is ensured.
The invention only configures one point switch, realizes the multi-point traction of the turnout, and can reduce the number of control cables while reducing the number of the point switches. And the conversion and transmission mechanism for transmitting force and displacement to the second traction point and the third traction point is positioned at the same side of the point switch, so that the structure is compact.
The invention is further explained below with reference to the drawings of the embodiments.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is an enlarged left side view of FIG. 1;
FIG. 3 is an enlarged view of the middle of FIG. 1;
fig. 4 is a right enlarged view of fig. 1.
In the figure: 1. a first outer locking mechanism; 2. a detection lever; 3. installing a foundation; 4. a switch machine; 5. a first mounting pull rod; 6. bending the pull rod; 7. a first T-shaped crank arm; 8. a first crutch seat; 9. a first connecting rod; 10. a second mounting pull rod; 11. a second T-shaped crank arm; 12. a second outer locking mechanism; 13. a second connecting rod; 14. a third outer locking mechanism; 15. thirdly, a pull rod is installed; 16. a third T-shaped crank arm; 17. a close-fitting checker.
Detailed Description
To further explain the technical means and systems adopted by the present invention to achieve the intended purpose, the following detailed description of the embodiments, structural features and transformation systems of the present invention are provided in conjunction with the accompanying drawings and examples.
As shown in fig. 1 and 2, the invention relates to a switching system of a one-machine multi-point traction turnout, which is characterized in that: at near the sleeper one side interval fixed multiunit installation basis 3 of switch track traction point, arrange fixed multiunit drive mechanism point along the rail interval through installation basis 3 and switch, the drive mechanism point includes: the device comprises a first outer locking mechanism 1, a second outer locking mechanism 12, a third outer locking mechanism 14, a detection rod 2, an installation foundation 3, a point switch 4, a first installation pull rod 5, a bending pull rod 6, a first T-shaped crank arm 7, a first crank base 8, a first connecting rod 9, a second installation pull rod 10, a second T-shaped crank 11, a second safety connecting rod 13, a third installation pull rod 15 and a third T-shaped crank arm 16; the first outer locking mechanism 1, the second outer locking mechanism 12 and the third outer locking mechanism 14 are respectively fixed at the positions of a first traction point, a second traction point and a third traction point,
the position of first pull point sets up goat 4, goat 4 installs with the switch is perpendicular, goat 4's power take off member is connected and is pull first outer locking mechanism 1, and simultaneously, goat 4's power take off member is connected with first installation pull rod 5 and turn-draw bar 6, the other end of turn-draw bar 6 is connected with a perpendicular arm round pin formula of first T shape turning arm 7, first T shape turning arm 7 is fixed on first turning seat 8, the turning arm can be around turning seat axis rotation, the movable rail of first pull point connects the one end of detecting lever 2, the other end and the goat that detects lever 2 detect the member and be connected.
The first T-shaped crank arm 7 rotates around the rotating shaft of the first crank base 8 under the pushing and pulling actions of the turning pull rod 6, the force and displacement output by the point switch 4 are output from the horizontal arm of the T-shaped crank arm, and the rotating motion is converted into the motion of the first connecting rod 9 along the axis parallel to the length direction of the turnout.
As shown in fig. 3, the second outer locking mechanism 12 is fixed at a second traction point of the movable rail, one end of the first connecting rod 9 is connected with the first T-shaped crank arm 7, and the other end is connected with the horizontal arm of the second T-shaped crank arm 11, so that the rotation of the first T-shaped crank arm 7 is transmitted to the vertical arm of the second T-shaped crank arm 11; the second installation pull rod 10 is connected with a vertical arm of a second T-shaped crank arm 11, the second installation pull rod 10 is simultaneously connected with a second outer locking mechanism 12, and the first connecting rod 9 transmits power and displacement to the second outer locking mechanism 12 through the second T-shaped crank arm 11.
As shown in fig. 4, the third external locking mechanism 14 is fixed at the third traction point, one end of the second connecting rod 13 is connected to the horizontal arm of the second T-shaped crank arm 11, and the other end is connected to the horizontal arm of the third T-shaped crank arm 16, so that the rotation of the second T-shaped crank arm 11 is transmitted to the vertical arm of the third T-shaped crank arm 16; the third installation pull rod 15 is connected with a vertical arm of a third T-shaped crank arm 16, the third installation pull rod 15 is simultaneously connected with a third outer locking mechanism 14, and the second connecting rod 13 transmits power and displacement to the third outer locking mechanism 14 through the third T-shaped crank arm 16.
Referring to fig. 1, 2, 3 and 4, the first outer locking mechanism 1, the second outer locking mechanism 12 and the third outer locking mechanism 14 are respectively connected with the first traction point, the second traction point and the third traction point movable rail.
In the conversion process, the position of the first traction point is provided with the force and displacement output by the point switch 4, the force and displacement parallel to the turnout at the position of the first traction point are converted into the force and displacement vertical to the turnout through the rotation of the connecting rod and the crank arm, the second outer locking mechanism 12 and the third outer locking mechanism 14 are pushed and pulled, and the second traction point and the third traction point of the movable rail are converted and locked. The second outer locking mechanism 11 is fixed with a close contact checker 17 at one side for detecting the close contact condition of the second traction point of the switch rail. The same approach is used to transmit forces and displacements backwards if more lead traction is required.
The length of the second installation pull rod 10 and the third installation pull rod 15 can be adjusted according to the stroke of different turnout traction points so as to adapt to the requirements of traction point conversion and locking.
The second traction point and the third traction point are located on the same side of the switch machine 4, which enables a compact construction thereof when transmitting forces and displacements.
The rotating shaft part of the crank seat is provided with a lubricating mechanism, the traction point can adopt an external locking mechanism or an internal locking mechanism, and the first external locking mechanism 1, the second external locking mechanism 12 and the third external locking mechanism 14 can all adopt connecting rod pieces of the internal locking mechanism.
In the design of the invention: 1) the installation foundation 3 is compact in structure, the installation foundation 3 of the first T-shaped crank arm 7 and the installation foundation 3 of the switch machine 4 are arranged together, the installation foundation 3 of the second T-shaped crank arm 11 and the third T-shaped crank arm 16 adopts a part of the installation foundation 3 of the switch machine 4, and the universality of parts is high.
2) The first connecting rods 9 and the second connecting rods 13 are two groups and are symmetrically arranged on the parallel arms of the T-shaped crank arms, and the stress is uniform during conversion transmission.
3) The second installation pull rod 10 and the third installation pull rod 15 are pull rod structures with adjustable lengths and can be adjusted according to the requirements of different strokes and locking amounts of the traction points.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (8)
1. A switching system of a multipoint traction turnout is characterized in that: at near the sleeper one side interval fixed multiunit installation basis (3) of switch track traction point, arrange fixed multiunit drive mechanism point along the rail interval through installation basis (3) and switch, the drive mechanism point includes: the device comprises a first outer locking mechanism (1), a second outer locking mechanism (12), a third outer locking mechanism (14), a detection rod (2), an installation base (3), a point switch (4), a first installation pull rod (5), a bending pull rod (6), a first T-shaped crank arm (7), a first crank seat (8), a first connecting rod (9), a second installation pull rod (10), a second T-shaped crank (11), a second connecting rod (13), a third installation pull rod (15), a third T-shaped crank arm (16) and a close-fit checker (17); the first outer locking mechanism (1), the second outer locking mechanism (12) and the third outer locking mechanism (14) are respectively fixed at the positions of a first traction point, a second traction point and a third traction point, a point switch (4) is arranged at the position of the first traction point and connected with the first outer locking mechanism (1) in a traction manner, the point switch (4) is vertically installed with a turnout, the point switch (4) is provided with a first installation pull rod (5) and a bending pull rod (6) at the same side of the point switch (4) when the point switch (4) is switched to lock the first traction point of the switch point, and the output force of the point switch (4) and the linear displacement of an action rod are transmitted to a vertical arm of a first T-shaped crank arm (7); the first T-shaped crank arm (7) is connected with a first crank seat (8) through a rotating shaft, the first T-shaped crank arm (7) can rotate around the rotating shaft of the first crank seat (8) under the pushing and pulling effects of the bending pull rod (6), the force and displacement output by the point switch (4) are output from a horizontal arm of the T-shaped crank arm, and the rotary motion is converted into the motion of the first connecting rod (9) along the axis parallel to the length direction of the turnout.
2. The switching system of one-machine multipoint traction turnout according to claim 1, wherein: the second outer locking mechanism (12) is fixed at the position of a second traction point, one end of a first connecting rod (9) is connected with a first T-shaped crank arm (7), the other end of the first connecting rod is connected with a horizontal arm of a second T-shaped crank arm (11), and the rotation of the first T-shaped crank arm (7) is transmitted to a vertical arm of the second T-shaped crank arm (11); the second installation pull rod (10) is connected with a vertical arm of a second T-shaped crank arm (11), the second installation pull rod (10) is simultaneously connected with a second outer locking mechanism (12), and the first connecting rod (9) transmits power and displacement to the second outer locking mechanism (12) through the second T-shaped crank arm (11).
3. The switching system of one-machine multipoint traction turnout according to claim 1, wherein: the third external locking mechanism (14) is fixed at the position of a third traction point, one end of a second connecting rod (13) is connected with the horizontal arm of the second T-shaped crank arm (11), the other end of the second connecting rod is connected with the horizontal arm of the third T-shaped crank arm (16), and the rotation of the second T-shaped crank arm (11) is transmitted to the vertical arm of the third T-shaped crank arm (16); the third installation pull rod (15) is connected with a vertical arm of a third T-shaped crank arm (16), the third installation pull rod (15) is simultaneously connected with a third outer locking mechanism (14), and the second connecting rod (13) transmits power and displacement to the third outer locking mechanism (14) through the third T-shaped crank arm (16).
4. The switching system of one-machine multipoint traction turnout according to claim 1, wherein: the first connecting rods (9) and the second connecting rods (13) are two groups and are symmetrically arranged on the parallel arms of the T-shaped crank arms.
5. The switching system of one-machine multipoint traction turnout according to claim 1, wherein: the second mounting pull rod (10) and the third mounting pull rod (15) are pull rod structures with adjustable lengths.
6. The switching system of one-machine multipoint traction turnout according to claim 1, wherein: the mounting base (3) of the first T-shaped crank arm (7) and the mounting base (3) of the switch machine (4) are arranged together, and the mounting bases (3) of the second T-shaped crank arm (11) and the third T-shaped crank arm (16) are partially of the same structure as the mounting base (3) of the switch machine (4).
7. The switching system of one-machine multipoint traction turnout according to claim 1, wherein: and a close contact detector (17) is fixed on one side of the second outer locking mechanism (11) and is used for detecting the close contact state of a second traction point or a third traction point of the switch rail.
8. The switching system of one-machine multipoint traction turnout according to claim 1, wherein: the second traction point and the third traction point are positioned on the same side of the point switch (4).
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010833520.6A CN111994127A (en) | 2020-08-18 | 2020-08-18 | Conversion system for one-machine multi-point traction turnout |
| PCT/CN2021/104163 WO2022037282A1 (en) | 2020-08-18 | 2021-07-02 | Conversion system of one-machine multi-point traction turnout |
| ZA2023/03534A ZA202303534B (en) | 2020-08-18 | 2023-03-13 | Conversion system of one-machine multi-point traction turnout |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010833520.6A CN111994127A (en) | 2020-08-18 | 2020-08-18 | Conversion system for one-machine multi-point traction turnout |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111994127A true CN111994127A (en) | 2020-11-27 |
Family
ID=73474136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010833520.6A Pending CN111994127A (en) | 2020-08-18 | 2020-08-18 | Conversion system for one-machine multi-point traction turnout |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN111994127A (en) |
| WO (1) | WO2022037282A1 (en) |
| ZA (1) | ZA202303534B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112477918A (en) * | 2020-12-11 | 2021-03-12 | 交控科技股份有限公司 | Turnout traction device, turnout multi-machine traction synchronization method and traffic facility |
| CN112498415A (en) * | 2020-12-21 | 2021-03-16 | 通号万全信号设备有限公司 | Novel special circular electro-hydraulic switch machine for monorail train |
| CN113635940A (en) * | 2021-09-10 | 2021-11-12 | 中铁宝桥集团有限公司 | One-machine multi-point driving mechanism for railway turnout |
| WO2022037282A1 (en) * | 2020-08-18 | 2022-02-24 | 西安铁路信号有限责任公司 | Conversion system of one-machine multi-point traction turnout |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115257858B (en) * | 2022-07-20 | 2023-12-19 | 西安铁路信号有限责任公司 | Structure for power transmission between turnout switching equipment |
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| CN212796902U (en) * | 2020-08-18 | 2021-03-26 | 西安铁路信号有限责任公司 | Switching mechanism for one-machine multi-point traction turnout |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN200951779Y (en) * | 2006-09-30 | 2007-09-26 | 赵正平 | Urban new traffic single rail switch turning tracing machine |
| CN102951181B (en) * | 2012-11-16 | 2015-08-19 | 北京中铁通电务技术开发有限公司 | A kind of Sleeper type electrohydraulic switcher |
| US11661094B2 (en) * | 2018-05-21 | 2023-05-30 | Vossloh Signaling Usa, Inc. | Reverse angled point slider |
| CN111994127A (en) * | 2020-08-18 | 2020-11-27 | 西安铁路信号有限责任公司 | Conversion system for one-machine multi-point traction turnout |
-
2020
- 2020-08-18 CN CN202010833520.6A patent/CN111994127A/en active Pending
-
2021
- 2021-07-02 WO PCT/CN2021/104163 patent/WO2022037282A1/en active Application Filing
-
2023
- 2023-03-13 ZA ZA2023/03534A patent/ZA202303534B/en unknown
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2474430Y (en) * | 2001-02-02 | 2002-01-30 | 苏州新区新技术应用研究所 | Switch mechanism |
| CN201309495Y (en) * | 2008-11-21 | 2009-09-16 | 北京铁路局太原电务器材厂 | Switch machine of single point traction |
| CN103786749A (en) * | 2012-10-29 | 2014-05-14 | 上海中铁通信信号国际工程有限公司 | Automatic control system for sleeve rail turnout switch |
| IT201700035928A1 (en) * | 2017-03-31 | 2018-10-01 | Silsud | PERFORMANCE CONTROL CASE FOR RAILWAY DEVIATIVES |
| IT201700118308A1 (en) * | 2017-10-19 | 2019-04-19 | Silsud S R L | SAFETY DEVICE FOR RAILWAY DEVIATORS |
| CN110497934A (en) * | 2019-09-09 | 2019-11-26 | 北京国兴力德新材料技术有限公司 | A kind of switch tie formula goat with status information output |
| CN212796902U (en) * | 2020-08-18 | 2021-03-26 | 西安铁路信号有限责任公司 | Switching mechanism for one-machine multi-point traction turnout |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022037282A1 (en) * | 2020-08-18 | 2022-02-24 | 西安铁路信号有限责任公司 | Conversion system of one-machine multi-point traction turnout |
| CN112477918A (en) * | 2020-12-11 | 2021-03-12 | 交控科技股份有限公司 | Turnout traction device, turnout multi-machine traction synchronization method and traffic facility |
| CN112498415A (en) * | 2020-12-21 | 2021-03-16 | 通号万全信号设备有限公司 | Novel special circular electro-hydraulic switch machine for monorail train |
| CN112498415B (en) * | 2020-12-21 | 2023-03-28 | 通号万全信号设备有限公司 | Novel special circular electro-hydraulic switch machine for monorail train |
| CN113635940A (en) * | 2021-09-10 | 2021-11-12 | 中铁宝桥集团有限公司 | One-machine multi-point driving mechanism for railway turnout |
| WO2023035349A1 (en) * | 2021-09-10 | 2023-03-16 | 中铁宝桥集团有限公司 | One-machine, multi-point drive mechanism for railway switch |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022037282A1 (en) | 2022-02-24 |
| ZA202303534B (en) | 2023-11-29 |
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