WO2022000966A1 - 一种磁轨制动器吸力测试系统及方法 - Google Patents

一种磁轨制动器吸力测试系统及方法 Download PDF

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Publication number
WO2022000966A1
WO2022000966A1 PCT/CN2020/131787 CN2020131787W WO2022000966A1 WO 2022000966 A1 WO2022000966 A1 WO 2022000966A1 CN 2020131787 W CN2020131787 W CN 2020131787W WO 2022000966 A1 WO2022000966 A1 WO 2022000966A1
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WIPO (PCT)
Prior art keywords
rail
magnetic
rail brake
brake
magnetic rail
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PCT/CN2020/131787
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English (en)
French (fr)
Inventor
刘德学
艾正武
康健
李�杰
吴世应
邹伟
Original Assignee
中车株洲电力机车有限公司
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Priority to EP20943596.5A priority Critical patent/EP4174466A4/en
Publication of WO2022000966A1 publication Critical patent/WO2022000966A1/zh

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/28—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for testing brakes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/18—Safety devices; Monitoring
    • B60T17/22—Devices for monitoring or checking brake systems; Signal devices
    • B60T17/228—Devices for monitoring or checking brake systems; Signal devices for railway vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
    • B61H7/00—Brakes with braking members co-operating with the track
    • B61H7/02—Scotch blocks, skids, or like track-engaging shoes
    • B61H7/04—Scotch blocks, skids, or like track-engaging shoes attached to railway vehicles
    • B61H7/06—Skids
    • B61H7/08—Skids electromagnetically operated
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M17/00—Testing of vehicles
    • G01M17/08—Railway vehicles

Definitions

  • the invention relates to a braking system of rail transit vehicles, in particular to a magnetic rail brake suction force testing system and method.
  • the magnetic rail brake is an indispensable braking component for safe braking in the braking system of rail transit equipment, and the electromagnetic suction force is the key technical index of the magnetic rail brake, and its suction force directly affects the braking distance of the rail vehicle. Therefore, the efficient and convenient measurement of the suction value of the magnetic rail brake is of great significance to the safety of service braking.
  • the commonly used measurement method is: measure a small section of the magnetic track brake with a dynamometer and a force sensor, and then convert the entire length of the magnetic track brake in equal proportions to obtain the suction value. Because there are differences in the magnetic poles along the entire length of the magnetic rail brake, the suction value obtained by conversion is not necessarily accurate. Articulated magnetic track brakes have more pronounced pole differences along their entire length.
  • the technical problem to be solved by the present invention is, aiming at the inaccuracy of the magnetic rail brake suction value measured in the prior art, to provide a method that can measure the magnetic rail brake suction value more efficiently and conveniently, so as to ensure the running of rail transit vehicles. Magnetic rail brake suction test system and method for braking safety and reliability.
  • the present invention provides a magnetic rail brake suction force test system, which includes an installation base, and a plurality of installation pads for supporting the magnetic rail brake are installed on the top of the installation base.
  • the lower part of the driving cylinder is vertically installed with a driving cylinder, the piston rod of the driving cylinder is arranged upward, a steel rail is installed on the top of the piston rod of the driving cylinder, and a force sensor is installed between the steel rail and the piston rod.
  • the present invention uses the magnetic pole pull-in and separation process of the integral steel rail and the magnetic rail brake to simulate the magnetic pole and the rail pull-in and separation process of the magnetic rail brake, and uses the force sensor to measure the maximum pulling force received by the separation of the magnetic poles of the integral steel rail and the magnetic rail brake, whereby, the suction value of the magnetic rail brake can be directly obtained, and the overall measurement of the magnetic rail brake suction value can be conveniently realized, which ensures the safety and reliability of the running brake of the rail transit vehicle, and there is no need to measure the electromagnetic force per unit length as in the traditional method.
  • the suction force value and then according to the proportional relationship between the unit length and the total length of the magnetic rail brake, the total suction force value of the entire magnetic rail brake is converted, which avoids the difference of the magnetic poles in the entire length direction of the magnetic rail brake during measurement, and makes the measurement result more accurate. more efficient.
  • the lower part of the rail is mounted on the rail seat, and the rail seat is fixedly connected with the piston rod of the driving cylinder.
  • the rail can also be integrally formed with the rail seat.
  • a displacement sensor for detecting whether the rail reaches the normal working gap of the magnetic pole of the magnetic rail brake is provided on the installation base.
  • the upper surface of the installation base is provided with a rectangular groove, and the rail can smoothly pass through the rectangular groove.
  • the driving cylinder is an oil cylinder or an air cylinder, or an electric push rod.
  • the rail seat and the piston rod are hinged through a ball joint, and the force sensor is installed between the ball joint and the piston rod.
  • the mounting pad and the mounting base are made of non-magnetic conductive materials.
  • the length of the steel rail is greater than the length of the magnetic track brake.
  • the working surface of the mounting pad is arranged in a stepped shape.
  • the installation base is vertically installed with a linear guide rail, and the side surface of the rail seat is installed on the linear guide rail to avoid the influence of motion friction on the force measurement process.
  • the contact surface roughness of the rail and the magnetic pole of the magnetic rail brake is all ⁇ Ra1.6.
  • the present invention also provides a suction test method of the magnetic rail brake suction test system, which includes:
  • the displacement sensor sends out the rail in-position command, the magnetic rail brake is energized, and under the action of electromagnetic attraction, the rail is completely attracted by the magnetic pole of the magnetic rail brake;
  • the drive cylinder is pressurized, so that the piston rod of the drive cylinder and the rail have a tendency to move away from the magnetic rail brake.
  • the force sensor detects the pulling force on the rail until the pulling force on the rail is equal to the magnetic pole attraction force of the magnetic rail brake, and the rail is released from the magnet.
  • the magnetic pole of the rail brake the force sensor collects the maximum pulling force value received by the rail, and the maximum pulling force value is the suction force value of the magnetic rail brake.
  • the present invention directly pulls the integral steel rail through the piston rod of the driving cylinder, and directly obtains the magnetic rail brake suction force value through the force sensor.
  • the traditional magnetic rail brake suction force measurement device there is no need to first measure the electromagnetic suction force value per unit length, and then according to the unit length It is proportional to the total length of the magnetic track brake, and then converts the total suction value of the entire magnetic track brake, which avoids the result deviation caused by the difference of the magnetic poles in the length direction of the magnetic track brake when measuring the suction force, and makes the measurement result more accurate and efficient.
  • the lower part of the rail is installed on the vertical linear guide rail to avoid the influence of motion friction on the force measurement process.
  • the mounting pad and mounting base located around the magnetic pole of the magnetic rail brake are made of non-magnetic material, which eliminates the electromagnetic influence and interference of the material around the magnetic pole on the force measurement of the rail during the force measurement process.
  • FIG. 1 is a schematic structural diagram of the present invention.
  • FIG. 2 is a schematic three-dimensional structure diagram of the present invention with a part of the installation base removed.
  • FIG. 3 is a top view of FIG. 2 .
  • FIG. 4 is a left side view of FIG. 3 .
  • the first embodiment of a magnetic rail brake suction test system of the present invention includes a mounting pad 1, a rail 2, a displacement sensor 3, a back plate 4, a linear guide 5, a rail seat 6, a drive cylinder 7, Install the base 8, the force sensor 9, and the ball hinge 10.
  • a rectangular slot 11 is opened in the middle area of the upper surface of the mounting base 8, and four installations are symmetrically installed on the upper surface of the mounting base 8 on both sides of the rectangular slot 11 to support the magnetic rail brake (not shown) and limit its vertical movement.
  • Pad 1 A rectangular slot 11 is opened in the middle area of the upper surface of the mounting base 8, and four installations are symmetrically installed on the upper surface of the mounting base 8 on both sides of the rectangular slot 11 to support the magnetic rail brake (not shown) and limit its vertical movement.
  • the lower part of the installation base 8 is vertically installed with the cylinder body of the driving cylinder 7 , the piston rod of the driving cylinder 7 is arranged upward, and the top of the piston rod of the driving cylinder 7 is hingedly mounted on the rail seat through the ball joint 10 6.
  • the top of the rail seat 6 is fixedly installed with the integral rail 2 .
  • the steel rail 2 can move up and down in the rectangular groove 11 under the driving of the piston rod of the driving cylinder 7, the steel rail 2 can pass through the rectangular groove 11, and when it reaches the normal working gap of the magnetic pole of the magnetic rail brake, it can be moved by the magnetic rail brake. Magnetic pole pulls together.
  • the driving cylinder 7 can be an oil cylinder, an air cylinder or an electric push rod. In this embodiment, the driving cylinder 7 adopts an oil cylinder.
  • a force sensor 9 is installed between the ball hinge 10 and the piston rod of the drive cylinder 7 to directly measure the tensile force on the rail 2 .
  • the back plate 4 is installed on the back of the installation base 8 , and a pair of linear guide rails 5 are installed vertically and parallel to the front of the back plate 4 .
  • the side surfaces of the rail seat 6 (the rail seat 6 is roughly L-shaped) are installed on the two linear guide rails 5, and when the piston rod of the driving cylinder 7 drives the rail seat 6 to move up and down along the linear guide rail 5, it can avoid the friction of movement.
  • the force measurement process has an impact.
  • the installation base 8 is provided with a displacement sensor 3 for detecting whether the rail 2 reaches the normal working gap of the magnetic pole of the magnetic rail brake.
  • the displacement sensor 3 detects that the rail 2 reaches the normal working gap of the magnetic pole of the magnetic rail brake, it can send a signal to control the magnetic rail brake to energize to generate a magnetic field.
  • the mounting pad 1 and the mounting base 8 are made of non-magnetic conductive materials.
  • the length of the steel rail 2 is greater than the length of the magnetic rail brake, and the installation pad 1 is arranged in a stepped shape.
  • the surface roughness of the contact surface between the rail 2 and the magnetic pole of the magnetic rail brake is all ⁇ Ra1.6.
  • the suction test method of the magnetic rail brake suction test system of the present invention includes:
  • Displacement sensor 3 sends out the in-position command of rail 2, and the magnetic rail brake is energized. Under the action of electromagnetic attraction, rail 2 is completely attracted by the magnetic pole of the magnetic rail brake;
  • the driving cylinder 7 is pressurized, so that the driving cylinder piston rod and the rail 2 have a tendency to move away from the magnetic rail brake.
  • the force sensor 9 detects the pulling force on the rail 2 until the pulling force on the rail 2 is equal to the magnetic pole suction force of the magnetic rail brake.
  • the force sensor 9 collects the maximum pulling force value received by the rail 2, and this maximum pulling force value is the suction force value of the magnetic rail brake.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Electromagnetism (AREA)
  • Braking Arrangements (AREA)

Abstract

一种磁轨制动器吸力测试系统及方法，其包括安装基座（8），安装基座（8）的顶部安装多个用于支撑磁轨制动器的安装垫（1），安装基座（8）的下部竖直安装驱动缸（7），驱动缸（7）的活塞杆朝上设置，驱动缸（7）的活塞杆顶部安装钢轨（2），钢轨（2）与活塞杆之间安装力传感器（9）。通过力传感器（9）测量整体的钢轨（2）受到的最大拉力，就可直接得出磁轨制动器的吸力值，无需换算，结果准确、高效，测量方法便捷。

Description

一种磁轨制动器吸力测试系统及方法 技术领域
本发明涉及轨道交通车辆制动系统，特别是一种磁轨制动器吸力测试系统及方法。
背景技术
磁轨制动器作为轨道交通装备上制动系统中安全制动不可或缺的制动部件，而电磁吸力是磁轨制动器的关键技术指标，其吸力的大小直接影响轨道车辆的制动距离。因此，高效便捷的测量磁轨制动器的吸力值对行车制动安全性具有十分重要的意义。
目前，测量磁轨制动器吸力方法有多种。常用的测量方法为：用拉力计和力传感器测量磁轨制动器其中的一小段，再等比例换算磁轨制动器全长得出吸力值。因为磁轨制动器整个长度方向磁极存在差异性，这样经换算得出吸力值不一定准确。铰接式磁轨制动器整个长度方向磁极差异性更加明显。
发明内容
本发明所要解决的技术问题是，针对现有技术测得的磁轨制动器吸力值不准确的不足，提供一种能更高效、更便捷的测出磁轨制动器吸力值，从而确保轨道交通车辆行车制动安全性和可靠性的磁轨制动器吸力测试系统及方法。
为解决上述技术问题，本发明提供了一种磁轨制动器吸力测试系统，其包括安装基座，所述安装基座的顶部安装多个用于支撑磁轨制动器的安装垫，所述安装基座的下部竖直安装驱动缸，所述驱动缸的活塞杆朝上设置，所述驱动缸的活塞杆顶部安装钢轨，所述钢轨与所述活塞杆之间安装力传感器。
本发明利用整体式钢轨与磁轨制动器的磁极吸合分离过程模拟磁轨制动器的磁极与铁轨吸合再分离过程，利用力传感器测量整体式钢轨与磁轨制动器的磁极分离所受到的最大拉力，从而直接得到磁轨制动器吸力值，便捷地实现了磁轨制动器吸力值的整体测量，确保了轨道交通车辆行车制动的安全性和可靠性，且无需如传统方法那样，先测量单位长度的电磁吸力值，再根据单位长度与磁轨制动器总长度的比例关系，再换算出整个磁轨制动器的总吸力值，避免了测量时磁轨制动器整个长度方向磁极的差异性，使得测量结果更准确，更高效。
优选地，所述钢轨的下部安装在钢轨座上，且所述钢轨座与所述驱动缸的活塞杆固定连接。当然，所述钢轨也可与钢轨座一体成型。
优选地，所述安装基座上设置用于检测所述钢轨是否到达磁轨制动器磁极正常工作间隙的位移传感器。
优选地，所述安装基座的上表面设有矩形槽，所述便钢轨能顺利通过矩形槽。
优选地，所述驱动缸为油缸或气缸，或电动推杆。
为确保测力过程所受拉力值均匀变化，消除测力憋劲，所述钢轨座与所述活塞杆通过球铰进行铰接，所述球铰与所述活塞杆之间安装有所述力传感器。
为避免测试过程中电磁干扰，所述安装垫和所述安装基座采用非导磁性材质制成。
为使磁轨制动器快速安装和垂向限位，所述钢轨的长度大于所述磁轨制动器的长度。所述安装垫的工作面设置为阶梯状。
为保证测力结果的准确性，所述安装基座竖直安装有直线导轨，所述钢轨座的侧面安装在所述直线导轨上，以避免运动摩擦对测力过程产生影响。
为使磁轨制动器吸力测试更准确，所述钢轨与所述磁轨制动器磁极的接触表面粗糙度均≤Ra1.6。
基于同一发明构思，本发明还提供了一种所述磁轨制动器吸力测试系统的吸力测试方法，其包括：
将磁轨制动器放置于安装垫上；
启动驱动缸，使驱动缸活塞杆向上移动并推动钢轨到达与磁轨制动器磁极的正常工作间隙后停止；
位移传感器发出钢轨到位指令，磁轨制动器通电，在电磁吸力作用下，钢轨被磁轨制动器的磁极完全吸住；
驱动缸加压，使驱动缸活塞杆和钢轨具有远离磁轨制动器的趋势，在此过程中，力传感器检测钢轨受到的拉力，直至钢轨所受拉力与磁轨制动器磁极吸力相等时，钢轨脱离磁轨制动器磁极，力传感器采集钢轨受到的最大拉力值，此最大拉力值即为磁轨制动器的吸力值。
与现有技术相比，本发明的有益效果是：
1)本发明直接通过驱动缸的活塞杆拉动整体钢轨，通过力传感器直接得出磁轨制动器吸力值，相对传统测磁轨制动器吸力装置，无需先测量单位长度的电磁吸力值，再根据单位长度与磁轨制动器总长度的比例关系，再换算出整个磁轨制动器的总吸力值，避免了测吸力时磁轨制动器长度方向磁极的差异性所导致的结果偏差，使得测量结果更准确，更高效。
2)为保证测力结果的准确性，钢轨下部安装在竖直设置的直线导轨上，以避免运动摩擦对测力过程产生影响。
3)将位于磁轨制动器磁极周围的安装垫和安装基座采用非导磁性材质制成，消除了测力过程磁极周围材质电磁对钢轨测力的影响和干扰。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明的结构示意图。
图2为本发明去掉部分安装基座的立体结构示意图。
图3为图2的俯视图。
图4为图3的左视图。
图中：1-安装垫、2-钢轨、3-位移传感器、4-背板、5-直线导轨、6-钢轨座、7-驱动缸、8-安装基座、9-力传感器、10-球铰、11-矩形槽。
具体实施方式
以下结合具体优选的实施例对本发明作进一步描述，但并不因此而限制本发明的保护范围。
为了便于描述，各部件的相对位置关系，如：上、下、左、右等的描述均是根据说明书附图的布图方向来进行描述的，并不对本专利的结构起限定作用。
实施例1
参见图1－图4所示，本发明一种磁轨制动器吸力测试系统实施例一包括安装垫1、钢轨2、位移传感器3、背板4、直线导轨5、钢轨座6、驱动缸7、安装基座8、力传感器9、球铰10。
安装基座8的上表面中间区域开有矩形槽11，矩形槽11两侧的安装基座8上表面对称安装四个用于支撑磁轨制动器(未图示)并限制其垂向移动的安装垫1。
安装基座8的下部竖直安装驱动缸7的缸体，所述驱动缸7的活塞杆朝上设置，且所述驱动缸7的活塞杆顶部通过所述球铰10铰接安装所述钢轨座6，所述钢轨座6的顶部固定安装整体钢轨2。钢轨2可在驱动缸7的活塞杆驱动下在矩形槽11内上、下移动，钢轨2可以穿过矩形槽11，并可在到达磁轨制动器磁极的正常工作间隙时，被磁轨制动器的磁极吸合。
驱动缸7可为油缸、气缸或电动推杆，本实施例中，驱动缸7采用油缸。
所述球铰10与所述驱动缸7的活塞杆之间安装力传感器9，以直接测量钢轨2受到的拉力。
安装基座8的背面安装背板4，背板4的正面竖直平行安装一对直线导轨5。所述钢轨座6(钢轨座6大致呈L型)的侧面安装在两直线导轨5上，在驱动缸7的活塞杆带动钢 轨座6沿直线导轨5上、下移动时，能避免运动摩擦对测力过程产生影响。
安装基座8上设置用于检测所述钢轨2是否到达磁轨制动器磁极正常工作间隙的位移传感器3。当位移传感器3检测到钢轨2到达磁轨制动器磁极正常工作间隙时，可发出信号控制磁轨制动器通电产生磁场。
为避免测试过程中电磁干扰，所述安装垫1、所述安装基座8采用非导磁性材质。
为使磁轨制动器快速安装和垂向限位，所述钢轨2长度大于磁轨制动器长度，所述安装垫1设置为阶梯状。
为使磁轨制动器吸力测试更准确，所述钢轨2与磁轨制动器磁极接触表面粗糙度均≤Ra1.6。
本发明磁轨制动器吸力测试系统的吸力测试方法包括：
将磁轨制动器放置于安装垫1上；
启动驱动缸7，使驱动缸活塞杆向上移动并推动钢轨2到达磁轨制动器磁极的正常工作间隙后停止；
位移传感器3发出钢轨2到位指令，磁轨制动器通电，在电磁吸力作用下，钢轨2被磁轨制动器的磁极完全吸住；
驱动缸7加压，使驱动缸活塞杆和钢轨2具有远离磁轨制动器的趋势，在此过程中，力传感器9检测钢轨2受到的拉力，直至钢轨2所受拉力与磁轨制动器磁极吸力相等时，钢轨2脱离磁轨制动器磁极，力传感器9采集钢轨2受到的最大拉力值，此最大拉力值即为磁轨制动器的吸力值。
以上所述，仅是本申请的较佳实施例，并非对本申请做任何形式的限制，虽然本申请以较佳实施例揭示如上，然而并非用以限制本申请，任何熟悉本专业的技术人员，在不脱离本申请技术方案的范围内，利用上述揭示的技术内容做出些许的变动或修饰均等同于等效实施案例，均属于技术方案范围内。

Claims (10)

  1. 一种磁轨制动器吸力测试系统，包括安装基座(8)，其特征在于，所述安装基座(8)的顶部安装多个用于支撑磁轨制动器的安装垫(1)，所述安装基座(8)的下部竖直安装驱动缸(7)，所述驱动缸(7)的活塞杆朝上设置，所述驱动缸(7)的活塞杆顶部安装钢轨(2)，所述钢轨(2)与所述活塞杆之间安装力传感器(9)。
  2. 根据权利要求1所述的磁轨制动器吸力测试系统，其特征在于，所述钢轨的下部安装在钢轨座(6)上，且所述钢轨座(8)与所述驱动缸(7)的活塞杆固定连接。
  3. 根据权利要求2所述的磁轨制动器吸力测试系统，其特征在于，所述钢轨座(6)与所述活塞杆通过球铰(10)进行铰接，所述球铰(10)与所述活塞杆之间安装有所述力传感器(9)。
  4. 根据权利要求1所述的磁轨制动器吸力测试系统，其特征在于，所述安装基座(8)上设置用于检测所述钢轨(2)是否到达磁轨制动器磁极正常工作间隙的位移传感器(3)。
  5. 根据权利要求1所述的磁轨制动器吸力测试系统，其特征在于，所述安装垫(1)和所述安装基座(8)采用非导磁性材质制成。
  6. 根据权利要求1所述的磁轨制动器吸力测试系统，其特征在于，所述钢轨(2)的长度大于所述磁轨制动器的长度。
  7. 根据权利要求1所述的磁轨制动器吸力测试系统，其特征在于，所述安装垫(1)的工作面设置为阶梯状。
  8. 根据权利要求2所述的磁轨制动器吸力测试系统，其特征在于，所述安装基座(8)竖直安装有直线导轨(5)，所述钢轨座(6)侧面安装在所述直线导轨(5)上。
  9. 根据权利要求1所述的磁轨制动器吸力测试系统，其特征在于，所述钢轨(2)与所述磁轨制动器磁极的接触表面粗糙度均≤Ra1.6。
  10. 一种权利要求1－9中任一项所述磁轨制动器吸力测试系统的吸力测试方法，其特征在于包括：
    将磁轨制动器放置于安装垫(1)上；
    启动驱动缸(7)，使驱动缸活塞杆向上移动并推动钢轨(2)到达与磁轨制动器磁极的正常工作间隙后停止；
    位移传感器(3)发出钢轨(2)到位指令，磁轨制动器通电，在电磁吸力作用下，钢轨(2)被磁轨制动器的磁极完全吸住；
    驱动缸(7)加压，使驱动缸活塞杆和钢轨(2)具有远离磁轨制动器的趋势，在此过程中，力传感器(9)检测钢轨受到的拉力，直至钢轨(2)所受拉力与磁轨制动器磁极吸力相等 时，钢轨(2)脱离磁轨制动器磁极，力传感器(3)采集钢轨受到的最大拉力值，此最大拉力值即为磁轨制动器的吸力值。
PCT/CN2020/131787 2020-06-29 2020-11-26 一种磁轨制动器吸力测试系统及方法 WO2022000966A1 (zh)

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