CN113309426B - Remote isolation device for LS locking device door system - Google Patents
Remote isolation device for LS locking device door system Download PDFInfo
- Publication number
- CN113309426B CN113309426B CN202110740806.4A CN202110740806A CN113309426B CN 113309426 B CN113309426 B CN 113309426B CN 202110740806 A CN202110740806 A CN 202110740806A CN 113309426 B CN113309426 B CN 113309426B
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- China
- Prior art keywords
- isolation
- door system
- isolation plate
- electromagnet
- plate
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- 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.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B83/00—Vehicle locks specially adapted for particular types of wing or vehicle
- E05B83/36—Locks for passenger or like doors
- E05B83/363—Locks for passenger or like doors for railway vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D19/00—Door arrangements specially adapted for rail vehicles
- B61D19/02—Door arrangements specially adapted for rail vehicles for carriages
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B81/00—Power-actuated vehicle locks
- E05B81/02—Power-actuated vehicle locks characterised by the type of actuators used
- E05B81/04—Electrical
- E05B81/08—Electrical using electromagnets or solenoids
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B81/00—Power-actuated vehicle locks
- E05B81/24—Power-actuated vehicle locks characterised by constructional features of the actuator or the power transmission
- E05B81/32—Details of the actuator transmission
- E05B81/40—Nuts or nut-like elements moving along a driven threaded axle
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B85/00—Details of vehicle locks not provided for in groups E05B77/00 - E05B83/00
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lock And Its Accessories (AREA)
Abstract
The invention discloses a remote isolation device for an LS locking device door system, which comprises a screw rod with a zero lead, a nut component arranged on the screw rod, a stop block component connected with the nut component and capable of rotating along with the nut component, and an electromagnet component respectively fixed on a bracket and an isolation plate capable of rotating and resetting relative to the bracket, wherein the electromagnet component comprises an electromagnet and a metal rod in the electromagnet, the extending end of the metal rod is abutted with one end of the isolation plate, and the stop block component can be abutted with the other end of the isolation plate after rotating along with the nut component so as to control the rotation of the screw rod. The invention is matched with LS for use, utilizes the last zero lead section of the LS lock, and compared with the screw-nut transmission without the zero lead section, the invention avoids the defect that the position is readjusted when the time position is changed due to the abrasion of the nut; the isolation part is prevented from directly bearing the force of the door system after isolation and the force after locking failure; saving the space of the device and being convenient for installation.
Description
Technical Field
The present invention relates to an isolation member for a track traffic door system, and more particularly to a remote isolation device for an LS locking device door system.
Background
The existing rail transit door system is designed with an isolating device, so that under the condition that a door fails, the isolating effect of the failed door can be achieved through the device, the door exits service in the subsequent positive line interval operation, all door commands sent by a vehicle are invalid in the door, and the fact that the operation of the whole train is not affected by the failure of a single door is ensured.
The isolating device is designed on the right lower side of the right door leaf, after the right door leaf rotates by 90 degrees through the four-corner key, the lock tongue in the device stretches out in the horizontal direction for a certain distance, the lock tongue and the sealing pressing strip arranged on the side of the door column form a locking relationship, meanwhile, the stretched lock tongue also triggers the isolating switch arranged on the side of the door column, and the triggering of the switch can enable the EDCU electric control unit of the door system to cut off the control of the door, so that the door leaf achieves the isolating effect. The door cannot be operated either by electric or manual opening.
The isolation device can effectively improve the operation safety of the train. But also has the following disadvantages:
(1) The device needs to be operated by crew members or professionals by adopting professional four-corner keys, and often because the operation in the mode is long in time consumption, the delay of a train can be caused frequently, and great challenges and influences are formed on the punctuality of train operation;
(2) Aiming at the occurrence of unmanned trains with wider and wider application, when the train doors are abnormal, the doors need to be isolated for continuous operation. The current door systems must operate the isolation device manually, and the unmanned trains need emergency handling under this condition, it is apparent that conventional isolation devices have failed to meet the requirements.
Disclosure of Invention
The invention aims to: the invention aims to provide a remote isolation device for an LS locking device door system, which can be controlled remotely, has high reliability and simple structure.
The technical scheme is as follows: the remote isolation device for the LS locking device door system comprises a screw rod with a zero lead, a nut component arranged on the screw rod, a stop block component connected with the nut component and capable of rotating along with the nut component, an electromagnet component respectively fixed on a bracket and an isolation plate capable of rotating and resetting relative to the bracket, wherein the electromagnet component comprises the electromagnet and a metal rod in the electromagnet, the extending end of the metal rod is abutted with one end of the isolation plate, and the stop block component can be abutted with the other end of the isolation plate after rotating along with the nut component so as to control the rotation of the screw rod.
Preferably, the device further comprises a micro switch fixed above the isolation plate, and a trigger plate which can rotate along with the isolation plate and trigger the micro switch is fixed on the isolation plate.
Preferably, the stop block assembly is fixedly provided with a positioning pin, and the positioning pin abuts against the isolation plate after rotating along with the stop block assembly.
Preferably, one end of the isolation plate corresponding to the stop block assembly is provided with an inclined surface for increasing the contact area with the stop block assembly.
Preferably, the isolation plate is fixed on the bracket through a rotating shaft, a shaft sleeve and a clamping plate which are respectively sleeved on the rotating shaft, a torsion spring is nested in the rotating shaft, one end of the torsion spring is fixed on the rotating shaft, and the other end of the torsion spring is abutted with the side edge of the isolation plate.
Preferably, the bracket is provided with an opening for enabling the metal rod to extend out to be abutted with the isolation plate; the isolation plate is provided with a convex column which extends into the opening to limit the rotation range of the isolation plate; an operation handle for manually rotating the isolation plate is fixed on the isolation plate.
Preferably, a gap is reserved between the isolation plate and the electromagnet bracket; the protruding end of the metal rod is provided with a protrusion for clamping the isolation plate.
Preferably, the trigger plate is L-shaped, one side of the L-shaped trigger plate is fixed on the isolation plate, and the other side of the L-shaped trigger plate is suspended.
Preferably, the support is L-shaped, the electromagnet is fixed on one side of the L-shaped support, and the isolation plate is rotatably fixed on the other side of the L-shaped support.
Preferably, the bracket comprises a first part for fixing the electromagnet and a second part for fixing the isolation plate, wherein the first part and the second part are arranged in an L shape, and the second part is provided with an opening for the metal rod to extend out and be abutted against the isolation plate.
The beneficial effects are that: compared with the prior art, the invention has the following remarkable effects: 1. the isolation part is prevented from directly bearing the force of the door system after isolation and the force after locking failure; the device saves the space, is convenient to install, and does not need to be readjusted along with the change of the positions of the screw rods worn by the nuts in the use process. 2. The screw-nut transmission device is matched with LS, the last zero lead section of the LS lock is utilized, and the screw-nut transmission device has the advantages that compared with screw-nut transmission without the zero lead section, the defect that the time position is readjusted due to the fact that the nut is worn and the time position is changed is avoided. 3. Meanwhile, the bearing capacity of the isolated device can be greatly reduced; whereas in the case of an insulated screw, an insulated pin or other insulated device would be required to carry the 2000N door opening force specified by the standard.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic diagram of the front structure of an electromagnet assembly and a separator assembly according to the present invention;
FIG. 3 is a schematic view of the mating reverse configuration of the electromagnet assembly and spacer assembly of the present invention;
FIG. 4 is a schematic front view of the whole structure in a reset state;
FIG. 5 is a schematic side view of the overall structure in a reset state;
FIG. 6 is a schematic diagram of the front structure of the whole structure in isolation;
FIG. 7 is a schematic side view of the overall structure in isolation;
FIG. 8 is a schematic view of the cooperation of the stop assembly and the spacer assembly in a reset condition;
FIG. 9 is a schematic view of the cooperation of the stop assembly and the spacer assembly in the isolated state;
FIG. 10 is a schematic view of the installation of a spacer structure of the present invention;
FIG. 11 is a schematic view of a block assembly according to the present invention.
Detailed Description
The present invention is described in further detail below.
As shown in fig. 1-9, the invention discloses a remote isolation device for an LS locking device door system, which comprises a screw rod 14 with zero lead, a nut component 9 installed on the screw rod 14, a stop component 10 connected with the nut component 9 and capable of rotating along with the nut component 9, wherein the stop component 10 comprises an arc-shaped plate, as shown in fig. 11, a positioning pin 11 is fixed on the arc-shaped plate, the positioning pin 11 can be abutted against an isolation plate 4 after rotating along with the stop component 10, and the structural schematic diagram of the non-rotating state, namely the normal working state, is shown in fig. 3, so that the positioning pin 11 and the isolation plate 4 are in a non-contact state.
As shown in fig. 2-3, the device also comprises an electromagnet 1 assembly fixed on the bracket 6 and a separation plate 4 which can rotate and reset relative to the bracket 6. The support 6 is fixed on the bearing driving mechanism, the support 6 comprises a first part for fixing the electromagnet 1 and a second part for fixing the isolation plate 4, the first part and the second part are L-shaped, and the second part is provided with an opening. A gap is left between the partition plate 4 and the opening position. The electromagnet 1 assembly comprises an electromagnet 1 and a metal rod 2 inside the electromagnet 1, a protrusion 17 used for clamping the isolation plate is arranged on the extending end of the metal rod, the metal rod 2 extends out of the electromagnet 1 and penetrates through an opening in the second part of the bracket 6 under the condition that electricity is not obtained, and the protrusion 17 is abutted with the isolation plate 4 so as to limit the rotation of the isolation plate 4. The metal rod 2 retracts into the electromagnet 1 after being electrified, and the metal rod 2 extends out of the electromagnet 1 and abuts against one end of the isolation plate 4 under the condition that the electricity is not electrified. The isolation plate 4 is rectangular, the upper end of the isolation plate 4 is fixed on the bracket 6 through a rotating shaft, a shaft sleeve and a clamping plate which are respectively sleeved on the rotating shaft, and the rotation and axial fixation of the isolation plate 4 are fastened by virtue of the shaft sleeve and the clamping plate through screws, as shown in fig. 10; a torsion spring 3 is nested in the rotating shaft, one end of the torsion spring 3 is fixed on the rotating shaft, the other end of the torsion spring is abutted against the side edge of the isolation plate 4, an operation handle 5 is fixed on the isolation plate 4, a convex column 16 extending into the opening is arranged on the opposite side of the isolation plate to the operation handle, the convex column in the embodiment is a screw for fastening the tail end of the operation handle to extend into the opening, and the convex column 16 can limit the rotation of the isolation plate in the range of the opening; when the metal rod 2 is retracted, the spacer 4 is rotated counterclockwise as shown by the restoring force of the torsion spring 3 until the boss is stopped after being rotated to the side of the opening to be blocked.
The normal state of the device is a reset state, namely, the isolation plate is blocked by the torsion spring and is not rotated, and the position relationship between the stop block assembly and the isolation plate is shown in fig. 8. When the door system EDCU has failed and the door system EDCU sends a door opening and closing signal or manually operates the emergency door unlocking device to open the door, the nut assembly 9 at the door system driving mechanism rotates and causes the door to perform an unlocking action, and after the stop assembly 10 connected to the nut assembly 9 rotates clockwise by a certain angle, the positioning pin 11 on the stop assembly 10 contacts with the upper free end of the rotated partition plate 4, as shown in fig. 9, the rotation of the nut assembly 9 is prevented, the unlocking action of the door is stopped, the door isolating device is validated, the door exits service, and the train can continue to operate. To further increase the contact area with the stop block assembly 10, the end of the partition plate 4 corresponding to the stop block assembly 10 is provided with a slope 15.
The micro switch 8 is fixed above the isolation plate 4, the trigger plate 7 which can rotate along with the isolation plate 4 is fixed below the rotating shaft on the isolation plate 4, and the trigger plate 7 contacts with the micro switch 8 and triggers the micro switch 8 after rotating anticlockwise. The trigger plate 7 is L-shaped, one side of the L-shaped trigger plate is fixed on the isolation plate 4, and the other side of the L-shaped trigger plate is suspended.
The working process comprises the following steps: when the vehicle door is in normal operation, namely in a reset state, the position relationship of each part is shown in figures 4 and 5, wherein the angle between the right side edge of the stop block assembly and the vertical direction is 6 degrees; when the door fails, i.e., in an isolated state, the positional relationship of the components is as shown in fig. 6 and 7, wherein the angle between the left side edge of the stopper assembly and the vertical is 32 °. When the car door fails and can not continue to be serviced, the car control center sends an isolation instruction, the electromagnet 1 of the remote isolation device is powered on, and the metal rod 2 inside the electromagnet is retracted inside the electromagnet 1. After the electromagnet metal rod 2 is retracted, the isolation plate 4 rotates anticlockwise according to the drawing under the action of the reset force of the torsion spring 3 until the operation handle 5 at the lower part of the isolation plate 4 rotates anticlockwise until the electromagnet bracket 6 is blocked. The trigger plate 7 connected to the isolation plate 4 then also rotates counter-clockwise, so that the microswitch 8 located above the isolation device triggers, giving an electrical signal to the electrical control unit of the door system EDCU, switching off the door electrical control. The partition plate 4 rotated counterclockwise is stopped at the current position due to the limit of the boss 16. When the door system EDCU sends a door opening and closing signal or manually operates the emergency unlocking device of the vehicle door to open the door, the nut assembly 9 at the driving mechanism of the door system rotates and enables the vehicle door to execute unlocking action, after the stop block assembly 10 connected with the nut assembly 9 rotates clockwise by a certain angle, the positioning pin 11 on the stop block assembly 10 contacts with the isolation plate 4 positioned in a rotating way, the rotation of the nut assembly 9 is prevented, the unlocking action of the vehicle door can be stopped, the vehicle door isolation device is effective, the vehicle door exits from service, and the train can continue to operate.
Claims (10)
1. The utility model provides a remote isolating device for LS locking device door system, its characterized in that, including take lead screw (14) of zero lead, install nut subassembly (9) on lead screw (14), but with nut subassembly (9) rotatory dog subassembly (10) of nut subassembly (9) are connected, still include electromagnet (1) subassembly, rotatable division board (4) that restore to the throne for support (6) on being fixed in support (6) respectively, electromagnet (1) subassembly includes inside metal pole (2) of electromagnet (1) and electromagnet (1), the one end butt of metal pole (2) and division board (4), but dog subassembly (10) follow nut subassembly (9) rotatory back with the other end butt of division board (4) thereby control the rotation of lead screw (14).
2. Remote isolation device for LS locking device door system according to claim 1, characterized in that it further comprises a micro switch (8) fixed above the isolation plate (4), on which isolation plate (4) a trigger plate (7) is fixed which can rotate with the isolation plate (4) and trigger the micro switch (8).
3. Remote isolation device for LS locking device door system according to claim 1, characterized in that the stop block assembly (10) is fixed with a positioning pin (11), which positioning pin (11) abuts against the isolation plate (4) after rotation with the stop block assembly (10).
4. Remote isolation device for LS locking device door system according to claim 1, characterized in that the end of the isolation plate (4) corresponding to the stop assembly (10) is provided with a bevel (15) for increasing the contact area with the stop assembly (10).
5. Remote isolation device for LS locking device door system according to claim 1, characterized in that the isolation plate (4) is fixed on the bracket (6) by means of a rotating shaft, a shaft sleeve (12) and a clamping plate (13) respectively sleeved on the rotating shaft, a torsion spring (3) is nested on the rotating shaft, one end of the torsion spring (3) is fixed on the rotating shaft, and the other end is abutted with the side edge of the isolation plate (4).
6. Remote isolation device for LS locking device door system according to claim 1, characterized in that the bracket (6) is provided with an opening for the metal rod (2) to protrude against the isolation plate (4).
7. Remote isolation device for LS locking device door system according to claim 6, characterized in that the isolation plate (4) is provided with a boss (16) protruding into the opening limiting the rotation range of the isolation plate (4).
8. Remote isolation device for LS locking device door system according to claim 1, characterized in that the isolation panel (4) is fixed with an operating handle (5) for manual rotation of the isolation panel.
9. Remote isolation device for LS locking device door system according to claim 1, characterized in that a gap is left between the isolation plate (4) and the electromagnet (1) holder (6).
10. Remote isolation device for LS locking device door system according to claim 1, characterized in that the protruding end of the metal rod is provided with a protrusion (17) for catching the isolation panel.
Priority Applications (1)
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CN202110740806.4A CN113309426B (en) | 2021-06-30 | 2021-06-30 | Remote isolation device for LS locking device door system |
Applications Claiming Priority (1)
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CN202110740806.4A CN113309426B (en) | 2021-06-30 | 2021-06-30 | Remote isolation device for LS locking device door system |
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CN113309426A CN113309426A (en) | 2021-08-27 |
CN113309426B true CN113309426B (en) | 2024-07-19 |
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CN202110740806.4A Active CN113309426B (en) | 2021-06-30 | 2021-06-30 | Remote isolation device for LS locking device door system |
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Families Citing this family (1)
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CN115583264A (en) * | 2022-10-28 | 2023-01-10 | 宁波中车时代传感技术有限公司 | Remote isolation device for vehicle door and vehicle door system |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN215369273U (en) * | 2021-06-30 | 2021-12-31 | 南京康尼机电股份有限公司 | Remote isolation device for LS locking device door system |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE792144A (en) * | 1972-01-07 | 1973-03-16 | Rixson Firemark | DOOR CLOSURE THAT MEETS CERTAIN CONDITIONS |
JP4644398B2 (en) * | 2001-09-21 | 2011-03-02 | ホシザキ電機株式会社 | Emergency opening device for sliding door |
CN101666188B (en) * | 2008-09-05 | 2012-02-29 | 上海嘉成轨道交通安全保障系统有限公司 | Door lock system for rail transit emergency door |
CN101560866B (en) * | 2009-05-22 | 2012-05-23 | 宁波永发集团有限公司 | Security door with electric emergency function |
CN102444332B (en) * | 2010-12-13 | 2013-08-21 | 上海嘉成轨道交通安全保障系统有限公司 | Locking and unlocking device for shield door of track traffic platform |
CN102815312B (en) * | 2012-09-14 | 2015-06-17 | 南京康尼电子科技有限公司 | Vehicle door remote fault isolation device and method |
CN103696640B (en) * | 2013-12-23 | 2015-11-18 | 南京康尼机电股份有限公司 | A kind of latch hook automatic locking mechanism for rail vehicle sliding door |
CN204386332U (en) * | 2014-12-30 | 2015-06-10 | 南京康尼机电股份有限公司 | A kind of passive locking device for city railway train door system |
CN104533212B (en) * | 2014-12-30 | 2016-04-13 | 南京康尼机电股份有限公司 | A kind of passive locking device for city railway train door system |
CN104675222B (en) * | 2015-01-26 | 2016-11-16 | 南京康尼机电股份有限公司 | A kind of emergency unlocking device for track vehicle door system |
CN105587214B (en) * | 2016-01-22 | 2017-08-04 | 南京康尼机电股份有限公司 | Singly open sliding plug door system |
CN106014016B (en) * | 2016-07-07 | 2018-01-09 | 南京康尼机电股份有限公司 | A kind of emergency release operation device for city railway train door system |
US20180347249A1 (en) * | 2017-05-31 | 2018-12-06 | Westinghouse Air Brake Technologies Corporation | Rail transit door isolation lock |
CN206888826U (en) * | 2017-06-14 | 2018-01-16 | 江苏惠民交通设备有限公司 | A kind of device of electric sliding door for tourist coach |
CN207761494U (en) * | 2017-11-15 | 2018-08-24 | 南京康尼机电股份有限公司 | Screw drives control system |
CN108716318B (en) * | 2018-08-01 | 2024-01-26 | 江苏明伟万盛科技有限公司 | General sliding door mechanical holding electromagnetic lock for rail transit platform door |
CN109113465B (en) * | 2018-08-01 | 2020-11-13 | 沈阳博得交通设备有限公司 | Rotary locking system for rail transit vehicle door |
CN112681929A (en) * | 2020-12-31 | 2021-04-20 | 欧特美交通科技股份有限公司 | Self-reset door opening and closing device |
CN112761438B (en) * | 2021-04-08 | 2021-06-08 | 宁波中车时代传感技术有限公司 | Remote isolating device of rail transit vehicle door and vehicle door system |
CN112900991B (en) * | 2021-04-28 | 2021-11-12 | 宁波中车时代传感技术有限公司 | Vehicle door end remote isolation device and vehicle door system |
CN112983154A (en) * | 2021-05-07 | 2021-06-18 | 宁波中车时代传感技术有限公司 | Rail transit vehicle door end unlocking device and vehicle door system |
-
2021
- 2021-06-30 CN CN202110740806.4A patent/CN113309426B/en active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN215369273U (en) * | 2021-06-30 | 2021-12-31 | 南京康尼机电股份有限公司 | Remote isolation device for LS locking device door system |
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