CN108569299B - Locking and overturning device for suspension type empty rail fork interface - Google Patents
Locking and overturning device for suspension type empty rail fork interface Download PDFInfo
- Publication number
- CN108569299B CN108569299B CN201710131571.2A CN201710131571A CN108569299B CN 108569299 B CN108569299 B CN 108569299B CN 201710131571 A CN201710131571 A CN 201710131571A CN 108569299 B CN108569299 B CN 108569299B
- Authority
- CN
- China
- Prior art keywords
- locking
- crank
- assembly
- pin
- interface
- 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.)
- Active
Links
- 239000000725 suspension Substances 0.000 title claims abstract description 21
- 230000007246 mechanism Effects 0.000 claims abstract description 64
- 230000033001 locomotion Effects 0.000 claims abstract description 12
- 230000007306 turnover Effects 0.000 claims description 15
- 230000008602 contraction Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 229930194936 Tylosin Natural products 0.000 description 1
- 239000004182 Tylosin Substances 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009975 flexible effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- WBPYTXDJUQJLPQ-VMXQISHHSA-N tylosin Chemical compound O([C@@H]1[C@@H](C)O[C@H]([C@@H]([C@H]1N(C)C)O)O[C@@H]1[C@@H](C)[C@H](O)CC(=O)O[C@@H]([C@H](/C=C(\C)/C=C/C(=O)[C@H](C)C[C@@H]1CC=O)CO[C@H]1[C@@H]([C@H](OC)[C@H](O)[C@@H](C)O1)OC)CC)[C@H]1C[C@@](C)(O)[C@@H](O)[C@H](C)O1 WBPYTXDJUQJLPQ-VMXQISHHSA-N 0.000 description 1
- 229960004059 tylosin Drugs 0.000 description 1
- 235000019375 tylosin Nutrition 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
- B61B7/00—Rope railway systems with suspended flexible tracks
- B61B7/04—Rope railway systems with suspended flexible tracks with suspended tracks serving as haulage cables
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
- B61B12/00—Component parts, details or accessories not provided for in groups B61B7/00 - B61B11/00
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Railway Tracks (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
The invention relates to a locking and turning device for a suspension type empty rail fork interface, which can fundamentally solve the problems of locking and switching interfaces of the suspension type empty rail fork, realizes the locking and turning device for the suspension type empty rail fork interface required by vehicle line changing, wherein the power output end of an electric push rod is hinged with one end of a locking pin and drives a cam mechanism to do linear motion, the cam mechanism drives the crank mechanism to do rotation with the locking pin with time sequence difference, the crank mechanism, a connecting rod assembly and a turning crank assembly form a hinge four-rod mechanism, and the crank mechanism drives a horizontal lock pin and a turning plate to rotate through the connecting rod assembly and the turning mechanism assembly so as to realize the horizontal locking of the locking pin and the turning of the horizontal lock pin and the turning plate. The advantages are that: firstly, the compensation problem of reserved expansion joints of the suspension type translation turnout and the problem of locking an interface after the turnout is in place are solved, and the continuity of a running surface of a vehicle is realized; and secondly, a hinge four-bar mechanism is adopted, so that the locking and overturning movement is driven by the same power source, the power source is reduced, and the reliability of the device is improved.
Description
Technical Field
The invention relates to a locking and turning device for a suspension type empty rail fork interface, which can fundamentally solve the problems of locking and switching interfaces of suspension type empty rail fork, and realize the requirement of vehicle line change, and belongs to the field of manufacturing of suspension type empty rail traffic vehicle line change devices.
Background
The existing suspension type empty rail turnout joint device is of a finger-shaped plate or sliding connecting plate structure which is inserted mutually, and the device is arranged at a turnout beam joint by bolts so as to realize the extension and retraction of the turnout beam and the smooth transition of a vehicle running surface; the interface device cannot meet the integral moving requirement of the suspended hollow rail translation turnout beam body, the translation turnout beam body needs to move and stretch under the influence of temperature and the like, a certain gap exists at the interface of the turnout beam and the rail beam, and the gap is a key factor for influencing smoothness of vehicles when passing; in order to solve the problem of the gap between the switch interfaces, the device is specially designed for locking and overturning the switch interfaces, realizes reliable locking of the switch, continuous transition of the running surface of the wheels when the vehicle passes through the switch joints, ensures stable and safe running of the vehicle, and has only one power source, thereby not only realizing the synchronism of the mechanism, but also improving the reliability of the whole device.
Disclosure of Invention
The design purpose is as follows: the locking and overturning device for the suspension type empty rail fork interface can fundamentally solve the problems of locking and switching interfaces of the suspension type empty rail fork and realize the requirement of vehicle line changing.
The design scheme is as follows: the running wheels of the suspension type vehicle require continuous engagement of the rail beams, and a continuous running surface is required to be formed by the turnover plate mechanism. The application designs a suspension type hollow rail switch interface locking and turning device which meets the requirements of the suspension type hollow rail translation switch interface, ensures smooth passing of vehicle running wheels, and has the characteristics of linkage interlocking, flexible action, safety, reliability and the like.
In order to realize the line changing requirement of the suspended type empty rail traffic vehicle, a translational turnout is designed to meet the line changing requirement of the vehicle, and an interface device is needed in the switching process of the turnout to realize the locking and the expansion of a turnout interface; the design of the device realizes the locking and overturning of the translation turnout interface, solves the problem of the connection interface compensation of the turnout beam and the track beam, meets the continuous requirements of vehicle line changing and vehicle running surface, has practicability and popularization, and can form a series of products. The main components are as follows: the driving mechanism and the turnover mechanism.
1. A driving mechanism: the driving mechanism mainly realizes power input, time sequence control and driving force transmission of the locking device. It mainly comprises: (1) the electric push rod is horizontally locked, (see fig. 2); the electric push rod pushes the locking pin to move horizontally to lock the turnout, and the electric push rod is also a power source of the whole mechanism device. (2) cam assembly (see fig. 3): the cam mechanism is arranged on the locking pin and realizes horizontal linear motion along with the locking pin. (3) crank mechanism (see fig. 4): the short crank in the crank mechanism is hinged with the cam mechanism cam plate, and the crank is rotated under the drive of the linear reciprocating motion of the cam. (4) linkage (see fig. 5): the device is used for hinging the crank mechanism and the turnover mechanism.
2. The tilting mechanism includes: (1) linkage (see fig. 6): the device is used for realizing the expansion and contraction of the interface in the switch of the turnout beam, compensating the expansion joint between the beams and realizing the continuity of the running surface of the vehicle. (2) horizontal detent mechanism (see fig. 7): and the turnout beam is hinged with the crank, overturns along with the connecting rod mechanism and is used for locking the bottom of the turnout beam.
The technical scheme is as follows: a locking and turning device for a suspension type empty track turnout joint is provided, wherein the power output end of an electric push rod is hinged with one end of a locking pin and drives a cam mechanism to do linear motion, the cam mechanism drives a crank mechanism to do rotation with the locking pin with time sequence difference, the crank mechanism, a connecting rod assembly and a turning crank assembly form a hinge four-bar mechanism, and the crank mechanism drives a horizontal lock pin and a turning plate to rotate through the connecting rod assembly and the turning crank assembly so as to achieve horizontal locking of the locking pin and turning of the horizontal lock pin and the turning plate.
Compared with the background technology, the invention solves the compensation problem of the reserved expansion joint of the suspension type translation turnout and the problem of locking the interface after the switch is in place, and realizes the continuity of the running surface of the vehicle; secondly, a hinge four-bar mechanism is adopted, so that the locking and overturning motions are driven by the same power source, and the reliability of the device is improved; and thirdly, the problem of poor locking and overturning telescopic time sequence is solved by using a cam mechanism. The actual working condition requirements of locking, overturning, unlocking and overturning are met; fourthly, the locking and overturning device for the suspended hollow rail translation turnout meets the requirements of movement and time sequence difference when the translation turnout switches the line, and ensures that the vehicle stably passes; fifthly, the design of parts of the suspension type hollow rail translation turnout locking and telescoping device has good manufacturing manufacturability.
Drawings
Fig. 1 is a schematic structural view of a locking and turning device for a suspended type empty rail fork interface.
Fig. 2 is a schematic view of a structure in which the electric putter is horizontally locked.
Fig. 3 is a schematic view of the structure of the cam assembly.
Fig. 4 is a schematic view of a crank mechanism.
Fig. 5-1 is a schematic view of a linkage mechanism.
Fig. 5-2 is a schematic cross-sectional view of A-A of fig. 5-1.
Fig. 6-1 is a schematic view of a flipping mechanism.
Fig. 6-2 is a schematic illustration of the application of fig. 6-1.
Fig. 7 is a schematic of a horizontal detent mechanism.
Fig. 8 is a schematic view of the locked state of fig. 1.
Fig. 9 is a schematic diagram of the unlocked state of fig. 1.
Detailed Description
Example 1: reference is made to figures 1, 8 and 9. A locking and turning device for a suspension type empty rail fork interface is characterized in that a power output end of an electric push rod 1 is hinged with one end of a locking pin 5 and drives a cam mechanism 6 to do linear motion, the cam mechanism 6 drives a crank mechanism to do rotation with the locking pin with time sequence difference, a crank mechanism 2, a connecting rod assembly 10 and a turning crank assembly 7 form a hinge four-bar mechanism, and the crank mechanism 2 drives a horizontal lock pin 8 and a turning finger plate 9 to rotate through the connecting rod assembly 10 and the turning crank assembly 7 so as to realize horizontal locking of the locking pin 5 and turning of the horizontal lock pin 8 and the turning finger plate 9. A lower bearing seat 12 is arranged between the turnover crank assembly 7 and the turnover plate 9.
Reference is made to fig. 2. The electric push rod 1 pushes the locking pin to horizontally move to lock the turnout, and is also a power source of the whole set of mechanism device, and the electric push rod consists of a motor 101, a locking pin 102, a locking pin seat 103 and a push rod support 104; the motor 101 is located on the push rod support 104, and the motor 101 drives the locking pin 3 to horizontally move through the push rod and the lock pin seat 4.
Reference is made to fig. 3. The cam mechanism 6 is composed of a cam plate 602 and a cam support 601, the vertical end surface of the cam plate 602 is connected with the surface of a top plate 603 of the cam support 601, and the cam mechanism 6 is arranged on the locking pin 102 and realizes horizontal linear motion along with the locking pin 102.
Reference is made to fig. 4. The crank mechanism 2 is composed of two long cranks 201, a short crank 202 and a connecting shaft 203; two long cranks 201 are respectively connected with both ends of the connecting shaft 203, and a short crank 202 is fixed between the two long cranks 201 for driving the connecting rod assembly.
Reference is made to fig. 5-1 and 5-2. The link assembly 10 is composed of a knuckle bearing 1001, a link 1002, and a connecting pin 1003; the two ends of the connecting rod 1002 are respectively connected with a joint bearing 1001, and the head of the joint bearing 1001 is provided with a connecting pin 1003 for hinging the crank mechanism and the turnover mechanism.
With reference to fig. 6-1 and 6-2. The overturning crank assembly 7 is a V-shaped crank 702, the lower end of the V-shaped crank 702 is connected with the connecting shaft 701, the back of the overturning plate 703 is fixedly connected with the connecting shaft 701 in a sleeved mode, namely, a shaft hole seat is arranged on the back of the overturning plate 703, the connecting shaft 701 is arranged in the shaft hole seat and is fixedly connected with the shaft hole seat, and the overturning plate 702 is in a finger-shaped structure and is used for realizing expansion and contraction of an interface in a turnout beam switch, compensating expansion joints among beams and realizing continuity of a running surface of a vehicle. The compensation problem of reserved expansion joints of the suspension type translation turnout is solved through the overturning of the mechanism finger-shaped plate, and the continuity of the running surface of the vehicle is realized.
Reference is made to fig. 7. The horizontal lock pin 8 is hinged with the overturning crank assembly 7 and overturns along with the connecting rod mechanism, so as to realize the locking of the bottom of the turnout beam.
The suspended hollow rail translation turnout locking and telescoping device should take the following measures to ensure the assembly work in the installation process. 1) The special detection tool is designed while a conventional detection instrument is adopted, so that the self-detection and special detection requirements in the installation process are facilitated; 2) After the parts are debugged in place, the related parts adopt a process of matching and beating positioning pins, and the positioning and locking of the assembled product parts are finished; 3) After all bolts and parts are installed and adjusted in place, all bolts with holes are loosened after being screwed by iron wires, and loosened by using the tylosin. 4) After locking, installation and adjustment, various inspections must be carried out, and the qualified rear part can be put into use and inspected and maintained regularly.
It should be understood that: although the above embodiments describe the design concept of the present invention in more detail, these descriptions are merely descriptions of the design concept of the present invention, and not limitations on the design concept of the present invention, and any combination, addition or modification not exceeding the design concept of the present invention falls within the scope of the present invention.
Claims (6)
1. A locking and turning device for a suspension type empty rail fork interface is characterized in that: the locking and overturning device for the suspended empty rail fork interface comprises: the device comprises an electric push rod (1), a locking pin (5), a cam mechanism (6), a crank mechanism (2), a connecting rod assembly (10), a turnover crank assembly (7) and a horizontal lock pin (8); the power output end of the electric push rod (1) is hinged with one end of the locking pin (5) and drives the cam mechanism (6) to do linear motion, the electric push rod (1) pushes the locking pin (5) to do horizontal motion so as to lock a turnout interface, the cam mechanism (6) drives the crank mechanism (2) to do rotation with the locking pin (5) with time sequence difference, the crank mechanism (2), the connecting rod assembly (10) and the turnover crank assembly (7) form a hinge four-bar mechanism, and the crank mechanism (2) drives the horizontal lock pin (8) and the turnover plate (9) to rotate through the connecting rod assembly (10) and the turnover crank assembly (7) so as to realize turnover of the horizontal lock pin (8) and the turnover plate (9); the overturning plate (9) is used for realizing the expansion and contraction of the interface in the switch of the turnout beam and compensating the expansion joint between the beams; the electric push rod (1) is a power source of the whole device; the cam mechanism (6) is composed of a cam plate (602) and a cam support (601); the vertical end surface of the cam plate (602) is connected with the top plate surface of the cam support (601), the cam mechanism (6) is arranged on the locking pin (5) and realizes horizontal linear motion along with the locking pin (5); the crank mechanism (2) consists of two long cranks (201), a short crank (202) and a first connecting shaft (203); the two long cranks (201) are respectively connected with two ends of the first connecting shaft (203), and the short crank (202) is fixed between the two long cranks (201); a short crank (202) in the crank mechanism (2) is hinged with a cam plate (602) of the cam mechanism, and a connecting rod assembly (10) is used for hinging the crank mechanism (2) and a turnover crank assembly (7); the horizontal lock pin (8) is hinged with the overturning crank assembly (7) and overturns along with the connecting rod assembly (10), so that the bottom of the turnout beam is locked.
2. The locking and turning device for a suspended hollow rail fork interface as claimed in claim 1, wherein: the electric push rod (1) consists of a motor (101), a locking pin (5), a locking pin seat (103) and a push rod support (11); the motor (101) is positioned on the push rod support (11), and the motor (101) drives the locking pin (5) to horizontally move through the push rod and the lock pin seat (103).
3. The locking and turning device for a suspended hollow rail fork interface as claimed in claim 1, wherein: the connecting rod assembly (10) is composed of a knuckle bearing (1001), a connecting rod (1002) and a connecting pin (1003); both ends of the connecting rod (1002) are respectively connected with a joint bearing (1001), and the head of the joint bearing (1001) is a connecting pin (1003).
4. The locking and turning device for a suspended hollow rail fork interface as claimed in claim 1, wherein: the overturning crank component (7) is a V-shaped crank (702), the lower end of the V-shaped crank (702) is connected with the second connecting shaft (701), and the back of the overturning plate (9) is fixedly connected with the second connecting shaft (701) in a sleeving manner.
5. The locking and turning device for a suspended hollow rail fork interface according to claim 1 or 4, wherein: the overturning plate (9) is of a finger-shaped structure.
6. The locking and turning device for a suspended hollow rail fork interface as claimed in claim 1, wherein: a lower bearing seat (12) is arranged between the turnover crank component (7) and the turnover plate (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710131571.2A CN108569299B (en) | 2017-03-07 | 2017-03-07 | Locking and overturning device for suspension type empty rail fork interface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710131571.2A CN108569299B (en) | 2017-03-07 | 2017-03-07 | Locking and overturning device for suspension type empty rail fork interface |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108569299A CN108569299A (en) | 2018-09-25 |
| CN108569299B true CN108569299B (en) | 2024-05-24 |
Family
ID=63577615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710131571.2A Active CN108569299B (en) | 2017-03-07 | 2017-03-07 | Locking and overturning device for suspension type empty rail fork interface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108569299B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110886161A (en) * | 2019-12-16 | 2020-03-17 | 中建空列（北京）科技有限公司 | Rail transfer device for suspension type air-rail crossing track and suspension type air-rail system |
| CN113293658B (en) * | 2021-05-26 | 2022-03-11 | 燕山大学 | Suspension type ball-joint type two-degree-of-freedom hinge system special for turnout and working process thereof |
| CN115287950B (en) * | 2022-10-08 | 2023-04-11 | 成都西交华创科技有限公司 | Translation type turnout beam of high-temperature superconducting magnetic suspension and translation method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB478673A (en) * | 1936-07-23 | 1938-01-24 | Llewelyn Wynn Williams | Improvements in and relating to counterbalancing devices particularly for use in connection with railway facing point lock bars |
| DE2450802A1 (en) * | 1974-10-25 | 1976-04-29 | Ruhrtaler Gesenkschmiede F W W | Railway switch points clamp tip locking mechanism - with inner and outer blocking cams to engage clamp head block faces |
| JPH0710002A (en) * | 1993-06-29 | 1995-01-13 | Railway Technical Res Inst | Turnout tip locking device and drive method |
| US5730395A (en) * | 1995-11-22 | 1998-03-24 | Gec Alsthom Transport Sa | Locking apparatus for locking a point of a rail switch, apparatus for operating and locking a point, a method of installing such apparatus, and apparatus for operating and locking a rail switch |
| FR2882717A1 (en) * | 2005-03-01 | 2006-09-08 | Mecno Service S R L | Track switch for e.g. tramway vehicle, has locking unit that locks flexible movable unit in each one of two end positions and comprises arm engaged in selective manner in one of two holes provided in shoe |
| CN101528527A (en) * | 2006-09-14 | 2009-09-09 | 福斯洛-科吉费尔公司 | Mechanism for operating switch machine |
| CN206552035U (en) * | 2017-03-07 | 2017-10-13 | 中铁宝桥集团有限公司 | A kind of suspension type unoccupied orbital trouble interface locking and turning device |
-
2017
- 2017-03-07 CN CN201710131571.2A patent/CN108569299B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB478673A (en) * | 1936-07-23 | 1938-01-24 | Llewelyn Wynn Williams | Improvements in and relating to counterbalancing devices particularly for use in connection with railway facing point lock bars |
| DE2450802A1 (en) * | 1974-10-25 | 1976-04-29 | Ruhrtaler Gesenkschmiede F W W | Railway switch points clamp tip locking mechanism - with inner and outer blocking cams to engage clamp head block faces |
| JPH0710002A (en) * | 1993-06-29 | 1995-01-13 | Railway Technical Res Inst | Turnout tip locking device and drive method |
| US5730395A (en) * | 1995-11-22 | 1998-03-24 | Gec Alsthom Transport Sa | Locking apparatus for locking a point of a rail switch, apparatus for operating and locking a point, a method of installing such apparatus, and apparatus for operating and locking a rail switch |
| FR2882717A1 (en) * | 2005-03-01 | 2006-09-08 | Mecno Service S R L | Track switch for e.g. tramway vehicle, has locking unit that locks flexible movable unit in each one of two end positions and comprises arm engaged in selective manner in one of two holes provided in shoe |
| CN101528527A (en) * | 2006-09-14 | 2009-09-09 | 福斯洛-科吉费尔公司 | Mechanism for operating switch machine |
| CN206552035U (en) * | 2017-03-07 | 2017-10-13 | 中铁宝桥集团有限公司 | A kind of suspension type unoccupied orbital trouble interface locking and turning device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108569299A (en) | 2018-09-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108569299B (en) | Locking and overturning device for suspension type empty rail fork interface | |
| CN102448821B (en) | Method for operating a landing gear assembly with a breaker strut | |
| CN108791086B (en) | Vehicle pedal device | |
| CN101351372B (en) | Front hatch having cantilever hatch-operating mechanism | |
| CN104015624B (en) | With the lateral current collector of double-four link mechanism series connection | |
| CN108454651B (en) | Straddle type monorail replacement Liang Shan crossover turnout equipment | |
| CN102975740B (en) | The curved arch method of turning gear and elimination beam side in the middle of urban track traffic scissors crossing | |
| CN102431644B (en) | Plane main undercarriage space retraction/extension mechanism and retraction/extension method | |
| GB2291636A (en) | Vehicle gap bridge | |
| CN107605307B (en) | Switching mechanism, locking mechanism and front self-locking device | |
| CN101528526B (en) | Device for mechanically connecting vehicles | |
| CN100519245C (en) | Movement connecting mechanism for car movable roof | |
| US2322372A (en) | Control device for folding doors | |
| CN102102473B (en) | Sliding door for a vehicle | |
| US6616105B2 (en) | Rail switch lock for points tongues | |
| CN104816817A (en) | Aerodynamic surface drive mechanism | |
| CN209191957U (en) | For the door equipment of vehicle and the vehicle with this door equipment | |
| US20200086893A1 (en) | Pivoting/sliding door for vehicles, comprising at least one door leaf and a spindle drive | |
| CN214033201U (en) | Clearance compensation device, transportation track and empty rail intelligent transportation system | |
| CN206552035U (en) | A kind of suspension type unoccupied orbital trouble interface locking and turning device | |
| CN116119001A (en) | Straight-shaft type full-motion variable V-tail motion mechanism | |
| CN201062474Y (en) | Platform translation door | |
| CN2849291Y (en) | Limit fixing device | |
| CN114016336A (en) | Suspension type track beam three-strand track line changing system | |
| CN221566684U (en) | Turnover swing arm mechanism for movable core turnout turnover tip hiding mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |