EP3696045B1 - Locking mechanism for point machine - Google Patents

Locking mechanism for point machine Download PDF

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Publication number
EP3696045B1
EP3696045B1 EP19768993.8A EP19768993A EP3696045B1 EP 3696045 B1 EP3696045 B1 EP 3696045B1 EP 19768993 A EP19768993 A EP 19768993A EP 3696045 B1 EP3696045 B1 EP 3696045B1
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EP
European Patent Office
Prior art keywords
locking
block
action
outer cylinder
cylinder sleeve
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
Application number
EP19768993.8A
Other languages
German (de)
French (fr)
Other versions
EP3696045A1 (en
EP3696045A4 (en
Inventor
Shuren YANG
Shangchao Liu
Kezheng XU
Tianxin HUANG
Xiaoyong Sun
Yulin Zhang
Siyi XUE
Shuang TIAN
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CRSC Research and Design Institute Group Co Ltd
Original Assignee
CRSC Research and Design Institute Group Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by CRSC Research and Design Institute Group Co Ltd filed Critical CRSC Research and Design Institute Group Co Ltd
Priority to HRP20230025TT priority Critical patent/HRP20230025T1/en
Priority to RS20230046A priority patent/RS63976B1/en
Publication of EP3696045A1 publication Critical patent/EP3696045A1/en
Publication of EP3696045A4 publication Critical patent/EP3696045A4/en
Application granted granted Critical
Publication of EP3696045B1 publication Critical patent/EP3696045B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • B61L5/04—Fluid-pressure devices for operating points or scotch-blocks

Definitions

  • the present invention belongs to the technical field of rail transit, and particularly relates to a locking mechanism for a point machine.
  • the point machine is an important railway turnout switching device and is used for switching and locking a turnout, changing an opening direction of the turnout and performing supervision and inspection on a position of the turnout.
  • the point machine is an important guarantee for ensuring railway driving safety and improving transportation efficiency.
  • the locking mechanism is a key component in the point machine, and the point machine locks the turnout through the locking mechanism.
  • the comparison file CN104494647A describes the commonly-used locking mechanism of a point machine in China, where two locking blocks are mounted on an action rod of the locking mechanism through a pin shaft. In such a locking manner, the locking blocks rotate around the pin shaft, and forces among a locking iron, the action rod and the locking blocks of the point machine are continuously changed in the turnout switching process. The forces are not balanced, and locking reinforcement is gradually increased for the point machine in the locking process.
  • the present invention provides a locking mechanism for a point machine as defined in the attached independent claim.
  • the locking mechanism includes a locking iron, an action rod, an action block, a locking block group, an oil cylinder assembly, a damping mechanism and a housing.
  • a first groove and a second groove are configured on one side of the locking iron, the first groove and the second groove have a same shape.
  • the locking block group includes a first locking block and a second locking block, the action block is provided with two sliding grooves, the first locking block and the second locking block are respectively mounted in the two sliding grooves, and the action rod is fixedly connected to the action block.
  • One side of the locking iron is in sliding fit with one side of the action block, the other side of the action block is in sliding fit with one end of an outer cylinder sleeve of the oil cylinder assembly, and an inclined plane protrusion structure is provided at asymmetry center of one end of the outer cylinder sleeve.
  • the damping mechanism is provided between the locking iron and the outer cylinder sleeve.
  • the damping mechanism includes a friction block, a spring and a mandrel, both one end of the spring and one end of the mandrel are fixedly connected to one side of the locking iron, the other end of the spring is fixedly connected to one end of the friction block, the other end of the friction block is attached to one end of the outer cylinder sleeve, and the spring is sleeved on the mandrel.
  • first locking block and the second locking block may have a same structure and a same size, the first locking block and the second locking block have a diamond structure.
  • the oil cylinder assembly may further include a piston rod and an oil cylinder body, where the piston rod is fixed in the housing, and the outer cylinder sleeve (5-1) is sleeved on the oil cylinder body.
  • the locking iron may be fixedly mounted in the housing; the outer cylinder sleeve and the action rod each are slidably connected to the housing, and two ends of the action rod are connected to a turnout.
  • the locking iron, the locking blocks, the action rod, the action block and the outer cylinder sleeve work together to implement the locking function of the point machine, so that after the turnout switching is completed, the locking mechanism can provide a reliable and stable supporting force for locking, the turnout is locked at a termination position, and the safety stability of the point machine is thus improved.
  • the two locking blocks are not connected to the action rod through the pin shaft, the locking reinforcement of the locking blocks is small and is kept constant in the locking process, and the locking is more reliable.
  • the two locking blocks are simple in structure, small in size and convenient to dismount and maintain.
  • a hydraulic point machine is taken as an example for illustration, but the locking mechanism described in the present invention is also applicable to other point machines.
  • the specific working principle is as follows: a piston rod of an oil cylinder assembly is fixed in a housing, an oil cylinder body is configured to drive an outer cylinder sleeve 5-1 to act, and the outer cylinder sleeve 5-1 pushes a lock block group to act; and further, an action rod 2 and an action block 3 are driven to move, and the action rod 2 is connected to a turnout so as to drive the turnout to move; and further, at a termination position of one side, the outer cylinder sleeve 5-1, a locking iron 1 and the lock block group jointly work to complete the locking function of the point machine, so that switching and locking of the turnout are implemented.
  • FIG. 1 , FIG. 2 and FIG. 3 are respectively a diagram illustrating locking performed by a locking mechanism at a left termination position, a diagram illustrating switching performed by a locking mechanism at an intermediate position, and a diagram illustrating locking performed by a locking mechanism at a right termination position, i.e., action diagrams of a main locking mechanism of the point machine, which however do not depict the damping mechanism of the current invention.
  • the outer cylinder sleeve 5-1 of the oil cylinder assembly moves rightwards, a right inclined plane of an inclined plane protrusion structure on the outer cylinder sleeve 5-1 is in contact with an inclined plane of a second locking block 4-2, the outer cylinder sleeve 5-1 continues to move rightwards, the second locking block 4-2 is pushed, and an action block 3 is driven to act together.
  • the action block 3 is connected to and moves synchronously with the action rod 2.
  • a first locking block 4-1 exits from a first groove 1-1 of the locking iron 1, and unlocking is completed.
  • the outer cylinder sleeve 5-1 continues to act until the second lock block 4-2 slides to a second groove 1-2 of the locking iron 1. At this moment, the second lock block 4-2 is pushed into the second groove 1-2 by the inclined plane protrusion structure on the outer cylinder sleeve 5-1 to complete right-side locking.
  • the outer cylinder sleeve 5-1 continues to act to enable the second lock block 4-2 to reach a certain locking depth, and the second locking block 4-2 is prevented from exiting from the second groove 1-2, and thus unlocking is prevented. That is, the switching from locking at the left termination position to locking at the right termination position is completed.
  • the same action principle applies when the outer cylinder sleeve 5-1 switches from the right termination locking position to the left termination locking position.
  • FIG. 4 is a structural diagram of a damping mechanism according to the present invention.
  • the damping mechanism includes a friction block 6-1, a spring 6-2 and a mandrel 6-3. After the point machine arrives at the termination position, the friction block 6-1 exerts a certain holding force through the springs 6-2, so that a certain friction force is generated between friction block 6-1 and the outer cylinder sleeve 5-1, and the outer cylinder sleeve 5-1 is kept at the locking position.
  • the outer cylinder sleeve 5-1 can only move in the reverse direction when the friction force generated between the outer cylinder sleeve 5-1 and the friction block 6-1 is overcome, so as to ensure that the point machine is kept at the locking position after being in place.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Railway Tracks (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Lock And Its Accessories (AREA)
  • Liquid Developers In Electrophotography (AREA)
  • Fluid-Damping Devices (AREA)

Description

    TECHNICAL FIELD
  • The present invention belongs to the technical field of rail transit, and particularly relates to a locking mechanism for a point machine.
    • BACKGROUND
  • The point machine is an important railway turnout switching device and is used for switching and locking a turnout, changing an opening direction of the turnout and performing supervision and inspection on a position of the turnout. The point machine is an important guarantee for ensuring railway driving safety and improving transportation efficiency.
  • The locking mechanism is a key component in the point machine, and the point machine locks the turnout through the locking mechanism. The comparison file CN104494647A describes the commonly-used locking mechanism of a point machine in China, where two locking blocks are mounted on an action rod of the locking mechanism through a pin shaft. In such a locking manner, the locking blocks rotate around the pin shaft, and forces among a locking iron, the action rod and the locking blocks of the point machine are continuously changed in the turnout switching process. The forces are not balanced, and locking reinforcement is gradually increased for the point machine in the locking process. The force states of the point machine in the switching and locking processes are not good, the switching stability of the point machine is thus influenced, and particularly, locking of the turnout by the point machine is influenced when the action rod of the point machine is impacted externally. An example of a machine for railway switching which is suitable for replacing a railroad tie is disclosed in the application US7300023B2 .
    • SUMMARY
  • In order to improve stability and reliability of the locking mechanism for a point machine, the present invention provides a locking mechanism for a point machine as defined in the attached independent claim. The locking mechanism includes a locking iron, an action rod, an action block, a locking block group, an oil cylinder assembly, a damping mechanism and a housing. A first groove and a second groove are configured on one side of the locking iron, the first groove and the second groove have a same shape. The locking block group includes a first locking block and a second locking block, the action block is provided with two sliding grooves, the first locking block and the second locking block are respectively mounted in the two sliding grooves, and the action rod is fixedly connected to the action block. One side of the locking iron is in sliding fit with one side of the action block, the other side of the action block is in sliding fit with one end of an outer cylinder sleeve of the oil cylinder assembly, and an inclined plane protrusion structure is provided at asymmetry center of one end of the outer cylinder sleeve. The damping mechanism is provided between the locking iron and the outer cylinder sleeve. Further, the damping mechanism according to the invention includes a friction block, a spring and a mandrel, both one end of the spring and one end of the mandrel are fixedly connected to one side of the locking iron, the other end of the spring is fixedly connected to one end of the friction block, the other end of the friction block is attached to one end of the outer cylinder sleeve, and the spring is sleeved on the mandrel. Further improvements are provided in the dependent claims.
  • Further, the first locking block and the second locking block may have a same structure and a same size, the first locking block and the second locking block have a diamond structure.
  • Further, the oil cylinder assembly may further include a piston rod and an oil cylinder body, where the piston rod is fixed in the housing, and the outer cylinder sleeve (5-1) is sleeved on the oil cylinder body.
  • Further, the locking iron may be fixedly mounted in the housing; the outer cylinder sleeve and the action rod each are slidably connected to the housing, and two ends of the action rod are connected to a turnout.
  • Technical effects and advantages of the present invention are as follows.
  • According to the present invention, the locking iron, the locking blocks, the action rod, the action block and the outer cylinder sleeve work together to implement the locking function of the point machine, so that after the turnout switching is completed, the locking mechanism can provide a reliable and stable supporting force for locking, the turnout is locked at a termination position, and the safety stability of the point machine is thus improved.
  • According to the present invention, in the switching process of the point machine, forces among the locking iron, the action rod, the outer cylinder sleeve and the locking blocks are kept constant, the force state of each component is good, and the operation is stable.
  • According to the present invention, the two locking blocks are not connected to the action rod through the pin shaft, the locking reinforcement of the locking blocks is small and is kept constant in the locking process, and the locking is more reliable.
  • According to the present invention, the two locking blocks are simple in structure, small in size and convenient to dismount and maintain.
  • Additional features and advantages of the preset invention will be set forth in the description which follows, and in part will be apparent from the description, or may be understood by implementing the present invention. The object and other advantages of the present invention may be implemented and obtained through structures set forth in the description, claims and drawings.
    • BRIEF DESCRIPTION OF DRAWINGS
  • To illustrate more clearly technical solutions in the embodiments of the present invention or technical solutions in the related art, drawings used in the description of the embodiments or the related art will be briefly described below. Apparently, drawings described below illustrate parts of the embodiments of the present invention.
    • FIG. 1 is a diagram illustrating locking performed by a locking mechanism at a left termination position;
    • FIG. 2 is a diagram illustrating switching performed by a locking mechanism at an intermediate position;
    • FIG. 3 is a diagram illustrating locking performed by a locking mechanism at a right termination position; and
    • FIG. 4 is a structural diagram of a damping mechanism according to the present invention.
  • In the drawings: 1 Locking iron, 1-1 First groove, 1-2 Second groove, 2 Action rod, 3 Action block, 4-1 First locking block, 4-2 Second locking block, 5-1 Outer cylinder sleeve, 6-1 Friction block, 6-2 Spring, and 6-3 Mandrel.
    • DETAILED DESCRIPTION
  • To illustrate the object, technical solutions and advantages of the present invention more clearly, the technical solutions of the present invention will be described clearly and completely in conjunction with drawings. Apparently, the embodiments described below are part, not all, of embodiments of the present invention.
  • A hydraulic point machine is taken as an example for illustration, but the locking mechanism described in the present invention is also applicable to other point machines.
  • According to the present invention, the specific working principle is as follows: a piston rod of an oil cylinder assembly is fixed in a housing, an oil cylinder body is configured to drive an outer cylinder sleeve 5-1 to act, and the outer cylinder sleeve 5-1 pushes a lock block group to act; and further, an action rod 2 and an action block 3 are driven to move, and the action rod 2 is connected to a turnout so as to drive the turnout to move; and further, at a termination position of one side, the outer cylinder sleeve 5-1, a locking iron 1 and the lock block group jointly work to complete the locking function of the point machine, so that switching and locking of the turnout are implemented.
  • FIG. 1, FIG. 2 and FIG. 3 are respectively a diagram illustrating locking performed by a locking mechanism at a left termination position, a diagram illustrating switching performed by a locking mechanism at an intermediate position, and a diagram illustrating locking performed by a locking mechanism at a right termination position, i.e., action diagrams of a main locking mechanism of the point machine, which however do not depict the damping mechanism of the current invention. Exemplarily, starting from the termination locking position on the left of the locking iron 1, the outer cylinder sleeve 5-1 of the oil cylinder assembly moves rightwards, a right inclined plane of an inclined plane protrusion structure on the outer cylinder sleeve 5-1 is in contact with an inclined plane of a second locking block 4-2, the outer cylinder sleeve 5-1 continues to move rightwards, the second locking block 4-2 is pushed, and an action block 3 is driven to act together. The action block 3 is connected to and moves synchronously with the action rod 2. At this moment, a first locking block 4-1 exits from a first groove 1-1 of the locking iron 1, and unlocking is completed. The outer cylinder sleeve 5-1 continues to act until the second lock block 4-2 slides to a second groove 1-2 of the locking iron 1. At this moment, the second lock block 4-2 is pushed into the second groove 1-2 by the inclined plane protrusion structure on the outer cylinder sleeve 5-1 to complete right-side locking. The outer cylinder sleeve 5-1 continues to act to enable the second lock block 4-2 to reach a certain locking depth, and the second locking block 4-2 is prevented from exiting from the second groove 1-2, and thus unlocking is prevented. That is, the switching from locking at the left termination position to locking at the right termination position is completed. The same action principle applies when the outer cylinder sleeve 5-1 switches from the right termination locking position to the left termination locking position.
  • A damping mechanism is provided between the locking iron 1 and the outer cylinder sleeve 5-1 in order to avoid the locking function failure caused by reverse movement of the outer cylinder sleeve 5-1 after the locking function action is completed. FIG. 4 is a structural diagram of a damping mechanism according to the present invention. The damping mechanism includes a friction block 6-1, a spring 6-2 and a mandrel 6-3. After the point machine arrives at the termination position, the friction block 6-1 exerts a certain holding force through the springs 6-2, so that a certain friction force is generated between friction block 6-1 and the outer cylinder sleeve 5-1, and the outer cylinder sleeve 5-1 is kept at the locking position. The outer cylinder sleeve 5-1 can only move in the reverse direction when the friction force generated between the outer cylinder sleeve 5-1 and the friction block 6-1 is overcome, so as to ensure that the point machine is kept at the locking position after being in place.
  • Although the present invention has been described in detail with reference to the above-mentioned embodiments, it should be understood by those skilled in the art that the technical solutions described in the above-mentioned embodiments may still be modified within the scope of the invention as defined by the appended claims.

Claims (4)

  1. A locking mechanism for a point machine, comprising a housing, a locking iron (1), an action rod (2), an action block (3), a locking block group, an oil cylinder assembly and a damping mechanism, wherein
    a first groove (1-1) and a second groove (1-2) are configured on one side of the locking iron (1), wherein the first groove (1-1) and the second groove (1-2) have a same shape;
    the locking block group comprises a first locking block (4-1) and a second locking block (4-2), the action block (3) is provided with two sliding grooves, the first locking block (4-1) and the second locking block (4-2) are respectively mounted in the two sliding grooves, and the action rod (2) is fixedly connected to the action block (3);
    one side of the locking iron (1) is in sliding fit with one side of the action block (3), the other side of the action block (3) is in sliding fit with one end of an outer cylinder sleeve (5-1) of the oil cylinder assembly, and an inclined plane protrusion structure is provided at a symmetry center of one end of the outer cylinder sleeve (5-1); and
    the damping mechanism is provided between the locking iron (1) and the outer cylinder sleeve (5-1);
    characterised in that
    the damping mechanism comprises a friction block (6-1), a spring (6-2) and a mandrel (6-3), both one end of the spring (6-2) and one end of the mandrel (6-3) are fixedly connected to one side of the locking iron (1), the other end of the spring (6-2) is fixedly connected to one end of the friction block (6-1), the other end of the friction block (6-1) is attached to one end of the outer cylinder sleeve (5-1), and the spring (6-2) is sleeved on the mandrel (6-3).
  2. The locking mechanism for the point machine of claim 1, wherein the first locking block (4-1) and the second locking block (4-2) have a same structure and a same size, and the first locking block (4-1) and the second locking block (4-2) have a diamond structure.
  3. The locking mechanism for the point machine of claim 1, wherein the oil cylinder assembly further comprises a piston rod and an oil cylinder body, the piston rod is fixed in the housing, and the outer cylinder sleeve (5-1) is sleeved on the oil cylinder body.
  4. The locking mechanism for a point machine of claim 1, wherein the locking iron (1) is fixedly mounted in the housing, wherein the outer cylinder sleeve (5-1) and the action rod (2) each are slidably connected to the housing, and two ends of the action rod (2) are connected to a turnout.
EP19768993.8A 2019-01-03 2019-09-04 Locking mechanism for point machine Active EP3696045B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
HRP20230025TT HRP20230025T1 (en) 2019-01-03 2019-09-04 Locking mechanism for point machine
RS20230046A RS63976B1 (en) 2019-01-03 2019-09-04 Locking mechanism for point machine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910005651.2A CN109849966B (en) 2019-01-03 2019-01-03 Locking mechanism for point switch
PCT/CN2019/104358 WO2020140467A1 (en) 2019-01-03 2019-09-04 Locking mechanism for point machine

Publications (3)

Publication Number Publication Date
EP3696045A1 EP3696045A1 (en) 2020-08-19
EP3696045A4 EP3696045A4 (en) 2021-12-01
EP3696045B1 true EP3696045B1 (en) 2023-01-11

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ID=66893933

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19768993.8A Active EP3696045B1 (en) 2019-01-03 2019-09-04 Locking mechanism for point machine

Country Status (6)

Country Link
EP (1) EP3696045B1 (en)
CN (1) CN109849966B (en)
HR (1) HRP20230025T1 (en)
HU (1) HUE061451T2 (en)
RS (1) RS63976B1 (en)
WO (1) WO2020140467A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109849966B (en) * 2019-01-03 2020-09-08 北京全路通信信号研究设计院集团有限公司 Locking mechanism for point switch
CN114802348B (en) * 2022-03-31 2023-12-29 西安铁路信号有限责任公司 Method for monitoring locking reliability of switch machine
CN116039704B (en) * 2023-03-07 2023-08-11 北京全路通信信号研究设计院集团有限公司 Locking device and switch machine

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001122117A (en) * 1999-10-25 2001-05-08 Nippon Signal Co Ltd:The Switch-and-lock movement apparatus
ITFI20030296A1 (en) * 2003-11-19 2005-05-20 Ge Transp Systems S P A CONTROL BOX FOR RAILWAY EXCHANGES
AT501894B1 (en) * 2005-05-27 2006-12-15 Metall Und Kunststoffwaren Erz DRIVE SYSTEM FOR A RAILWAY
CN201516859U (en) * 2009-07-28 2010-06-30 西安铁路信号工厂 Reinforcement-free switch locking device
NL1039271C2 (en) * 2011-12-28 2013-07-01 Richard Roos WINTERPROOF RAILWAY CHANGE / RAILWAY CROSS.
CN202879524U (en) * 2012-11-16 2013-04-17 北京中铁通电务技术开发有限公司 Locking mechanism for switch machine
CN104029696B (en) * 2013-11-12 2016-08-17 西安铁路信号有限责任公司 A kind of point machine
CN203567758U (en) * 2013-11-12 2014-04-30 西安铁路信号有限责任公司 Modular turnout switch machine
CN203681579U (en) * 2013-12-31 2014-07-02 西安铁路信号有限责任公司 Switching locking mechanism comprising adjustable friction damper
CN104494647B (en) * 2014-12-20 2017-04-05 太原市京丰铁路电务器材制造有限公司 A kind of electrohydraulic point machine
CN205311635U (en) * 2015-12-11 2016-06-15 天津辉煌路阳科技有限公司 Shutting structure of goat
CN207550219U (en) * 2017-10-31 2018-06-29 西门子信号有限公司 Driving mechanism, contact unit and the goat of the contact unit of goat
CN109849966B (en) * 2019-01-03 2020-09-08 北京全路通信信号研究设计院集团有限公司 Locking mechanism for point switch

Also Published As

Publication number Publication date
EP3696045A1 (en) 2020-08-19
WO2020140467A1 (en) 2020-07-09
HRP20230025T1 (en) 2023-04-14
EP3696045A4 (en) 2021-12-01
HUE061451T2 (en) 2023-06-28
CN109849966A (en) 2019-06-07
CN109849966B (en) 2020-09-08
RS63976B1 (en) 2023-03-31

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