WO2022077911A1 - 全轨型轨头磨耗测量装置 - Google Patents

全轨型轨头磨耗测量装置 Download PDF

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Publication number
WO2022077911A1
WO2022077911A1 PCT/CN2021/095693 CN2021095693W WO2022077911A1 WO 2022077911 A1 WO2022077911 A1 WO 2022077911A1 CN 2021095693 W CN2021095693 W CN 2021095693W WO 2022077911 A1 WO2022077911 A1 WO 2022077911A1
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Prior art keywords
measuring
rail
ruler
rod
caliper
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PCT/CN2021/095693
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English (en)
French (fr)
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卜少明
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卜少明
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Publication of WO2022077911A1 publication Critical patent/WO2022077911A1/zh

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/0002—Arrangements for supporting, fixing or guiding the measuring instrument or the object to be measured
    • G01B5/0004—Supports
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
    • G01B5/06—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness for measuring thickness
    • G01B5/061—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness for measuring thickness height gauges

Definitions

  • the invention (utility model) relates to a rail measurement technology in rail transportation, in particular to a full-rail type rail head wear measurement device.
  • the rail wear meter in the prior art has a relatively single measurement function.
  • a rail wear meter can only measure the wear of the top of the rail head and the wear of the working surface of the side of the rail head of a certain type of rail.
  • the inspection tool must first calibrate it to zero, and then compare and measure the tested rail to obtain the wear of the top of the rail head and the wear of the working surface of the rail head.
  • the technical problem to be solved by the present invention is to provide a full-rail type rail head wear measuring device that can detect the wear of rail heads of different specifications and models.
  • a full-rail type rail head wear measuring device capable of solving the above-mentioned technical problems, the technical scheme of which includes a caliper body and a caliper frame sliding forward and backward on the caliper body, and a caliper body is provided on the measuring claw of the caliper body.
  • the body measuring head is placed opposite to the ruler frame measuring head set on the ruler frame measuring claw of the caliper frame.
  • the reading ruler I on the caliper frame is the same as the one.
  • the scale I on the caliper ruler shows "0" to "0", or the digital display on the caliper frame shows "0", the difference is:
  • the measuring claw of the ruler body is provided with a measuring block that slides up and down to adjust the measuring position (to adapt to the measurement of different types of rails), and the rear side of the measuring block is provided with a right angle formed by a vertical positioning surface and a horizontal positioning surface A positioning chuck, the vertical surface of the right-angle positioning chuck is flush with the measuring surface of the ruler body measuring head, and the horizontal positioning surface of the right-angle positioning chuck is perpendicular to the measuring surface of the ruler body measuring head.
  • a support plate is arranged on the back side of the measuring claw of the ruler frame, and a fixing rod is installed vertically downward on the support plate.
  • the rod body of the fixing rod is provided with a slider (sliding along the rod body).
  • the front end of the measuring rod is a right-angle measuring head composed of a bottom measuring surface and a top measuring surface, and the top measuring surface of the measuring rod is aligned with the measuring head of the ruler frame
  • the reading ruler II on the measuring rod and the scale II on the slider are set to "0".
  • a scale line is engraved on the measuring claw of the ruler body corresponding to the model of a rail to be measured, or two or more scale lines are engraved on the measuring claw of the ruler body from top to bottom, and different scale lines correspond to The type of rail to be measured is large and small.
  • the top scale line corresponds to the measurement position of the largest heavy-duty rail
  • the bottom scale line corresponds to the measurement position of the smallest light-duty rail
  • the right-angle positioning chuck is a right-angle positioning bayonet opened on the measuring block.
  • the fixing rod is hinged on the support plate to become a swing rod
  • the support plate is provided with a stop pin for restricting the swing rod that swings forward in a vertical position
  • a stop pin is arranged between the support plate and the swing rod.
  • FIG. 1 is a front view of an embodiment of the present invention (utility model).
  • FIG. 2 is a rear view of the embodiment of FIG. 1 .
  • FIG. 3 is a schematic diagram of measuring the wear of the top of the rail head of the UIC50 guide rail according to the embodiment of FIG. 1 .
  • FIG. 4 is a schematic diagram of measuring the wear of the working surface of the rail head side of various types of guide rails according to the embodiment of FIG. 1 .
  • FIG. 5 is a schematic diagram of measuring the height difference between the top of the rail head of the UIC60 guide rail and the top of the rail head of the guard rail according to the embodiment of FIG. 1 .
  • Drawing number identification 1, caliper body; 1-1, ruler body measuring claw; 1-2, ruler body measuring head; 2, caliper ruler frame; 2-1, ruler frame measuring claw; 2-2, ruler frame measuring head ; 3, measuring block; 4, support plate; 5, pendulum rod; 6, slider; 7, measuring rod; 8, stop pin; 9, rail; 10, limit pin.
  • the present (utility model) full-rail type rail head wear measuring device comprises a caliper body 1 and a caliper frame 2, the caliper frame 2 is installed on the caliper body 1 and can be manually operated on the caliper body 1 up and down, After sliding, the bottom of the ruler body measuring claw 1-1 of the caliper body 1 is provided with a backward ruler body measuring head 1-2, and the ruler body measuring claw 1-1 is engraved with many Each scale line is the measurement position of the model UIC60 (maximum heavy-duty rail), UIC50...UIC38 (minimum light-duty rail) or other types of rails specified by the International Union of Railways, UIC60, UIC50...UIC38 type of rails The size of 9 is decreasing, and the bottom of the measuring claw 2-1 of the caliper frame 2 is provided with a measuring head 2-2 facing forward and opposite to the measuring head 1-2 of the body of the caliper.
  • UIC60 maximum heavy-duty rail
  • UIC50...UIC38 minimum light-duty
  • the distance between the ruler body probe 1-2 and the ruler frame probe 2-2 is zero (the measurement surfaces of the two probes are in conflict), and the reading ruler I on the caliper frame 2 and the caliper ruler are at this time.
  • the scale I on the body 1 is set to "0", and the rear stop of the caliper frame 2 is limited by the screw at the rear end of the caliper body 1, as shown in Figure 1 and Figure 2.
  • a measuring block 3 is slidably installed on the measuring claw 1-1 of the ruler body, and the position can be manually adjusted up and down to adapt to the measurement of a certain type of rail 9.
  • the rear side of the measuring block 3 is provided with a right-angle positioning bayonet (a type of right-angle positioning chuck), the vertical surface of the right-angle positioning bayonet is aligned downward with the rear-end measuring surface of the ruler body probe 1-2, and the horizontal surface of the right-angle positioning bayonet exceeds the ruler body probe 1 backward -2 rear end measurement surface, as shown in Figure 1 and Figure 2.
  • a support plate 4 is installed between the rear upper part of the caliper frame measuring claw 2-1 and the lower part of the caliper frame 2, and the upper end of a swing rod 5 is hinged on the support plate 4, and the swing rod 5 can be manually moved forward and backward.
  • the support plate 4 is provided with a stop pin 8 to limit the forward swing position of the pendulum rod 5.
  • the pendulum rod 5 is in a vertical downward swing position; a slider 6 is installed on the rod body of the pendulum rod 5, a measuring rod 7 is installed on the slider 6 along the direction perpendicular to the rod body, and the front end of the measuring rod 7 is a right-angle probe composed of a bottom measuring surface and a top measuring surface.
  • the sliding block 6 can be manually adjusted up and down on the position on the pendulum rod 5, the measuring rod 7 can be manually adjusted forward and backward on the position on the sliding block 6, and a limit pin 10 (limiting pin 10) is provided on the measuring claw 2-1 of the ruler frame.
  • a type of structure that acts on the measuring rod 7 to limit its upward sliding position) when the reading ruler II on the measuring rod 7 and the scale II on the slider 6 are set to "0", the top measurement of the measuring rod 7 Align the front-end measuring surface of the ruler and frame probe 2-2 downwards (on the vertical surface), as shown in Figure 1 and Figure 2.
  • Embodiment 1 as shown in Figure 3 is to measure the wear on the top of UIC50 type rail 9 rail head by adopting the present invention (utility model):
  • the second embodiment as shown in Figure 4 is to measure the wear of the working surface of the rail head side of any type of rail 9 by using the present invention (utility model):
  • the third embodiment as shown in Figure 5 is to measure the height difference between the top of the guard rail and the top of the main rail of the UIC60 type rail 9 using the present invention (utility model):

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)
  • Length-Measuring Instruments Using Mechanical Means (AREA)

Abstract

本发明(实用新型)公开了一种全轨型轨头磨耗测量装置，包括卡尺尺身和于卡尺尺身上前、后滑动的卡尺尺框，尺身测爪上设有上、下滑动调节测量位置的测块，测块的后侧开设有直角定位卡口，尺框测爪后侧设有支撑板，摆杆的一端铰装于支撑板，摆杆的杆体上设有滑块，滑块上沿垂直于杆体方向滑动设有测杆，测杆的前端为由底测面和顶测面构成的直角测头，支撑板上设有将摆杆限止在竖直位的挡销，测杆的顶测面对齐尺框测头，测杆上的读数尺Ⅱ与滑块上的刻度尺Ⅱ对"0"。本发明(实用新型)可测量不同轨型导轨轨头顶部和侧面磨耗，减少了所需配备的检测工具种类和数量，简化了操作流程，降低了检测工具成本。

Description

全轨型轨头磨耗测量装置 技术领域
本发明(实用新型)涉及轨道运输中的铁轨测量技术，具体为一种全轨型轨头磨耗测量装置。
背景技术
轨道运输所用铁轨的加工和检测过程中，经常需要对各种大小不同、形状各异的铁轨进行轨头磨耗测量。
现有技术的铁轨磨耗仪，其测量功能较为单一，一个铁轨磨耗仪只能测量某一种特定型号铁轨的轨头顶部磨耗和轨头侧工作面磨耗，且在使用铁轨磨耗仪前必须用标准检具先行对其进行对零校准，才能对被测铁轨进行比较测量而得出该铁轨轨头顶部的磨耗和轨头侧工作面磨耗。
现有铁轨磨耗仪只能测量某种特定铁轨，并且对用于对零的标准检具和工作环境的要求高；同时，铁路运输部门的各个工务段因需测量不同轨型的铁轨而必须配备不同型号的铁轨磨耗仪和不同的标准检具，这样不利于轨道运输部门降低成本和进行工具管理，不能适应现代轨道运输快速发展中对不同铁轨的快速测量需求。
发明(实用新型)内容
针对现有技术的不足，本发明(实用新型)所要解决的技术问题是提出了一种可对不同规格型号轨头磨耗进行检测的全轨型轨头磨耗测量装置。
能够解决上述技术问题的全轨型轨头磨耗测量装置，其技术方案包括卡尺尺身和于卡尺尺身上前、后滑动的卡尺尺框，所述卡尺尺身的尺身测爪上设置的尺身测头与卡尺尺框的尺框测爪上设置的尺框测头相对而置，所述尺身测头与尺框测头距离为零时，所述卡尺尺框上的读数尺Ⅰ与卡尺尺身上的刻度尺Ⅰ对“0”、或卡尺尺框上的数显屏显示为“0”，所不同的是：
1、所述尺身测爪上设有上、下滑动调节测量位置的测块(以适应不同型号铁轨的测量)，所述测块后侧设有由垂直定位面和水平定位面构成的直角定位卡头，所述直角定位卡头的垂直面平齐于尺身测头的测面，直角定位卡头的水平定位面垂直于尺身测头的测面。
2、所述尺框测爪后侧设有支撑板，所述支撑板上竖直向下安装有固定杆，所述固定杆的杆体上设有滑块(沿杆体滑动)，所述滑块上沿垂直于杆体方向滑动设有测杆，所述测杆的前端部为由底测面和顶测面构成的直角测头，所述测杆的顶测面对齐尺框测头的测面，测杆上的读数尺Ⅱ与滑块上的刻度尺Ⅱ对“0”。
3、所述卡尺尺身与卡尺尺框之间、所述尺身测爪与测块之间、所述滑块与固定杆之间、所述测杆与滑块之间均设有锁定卡尺尺框、测块、滑块、测杆滑动位置的锁紧件。
进一步，所述尺身测爪上刻制有壹条刻度线对应于所要测量的一铁轨型号，或尺身测爪上自上而下刻制有两条以上刻度线，不同的刻度线对应于所要测量铁轨的型号自大而小。
为适应各种型号铁轨的测量，多条刻度线中，最上端刻度线对应于最大重型铁轨的测量位置，最下端刻度线对应于最小轻型铁轨的测量位置。
进一步，所述直角定位卡头为开设于测块上的直角定位卡口。
进一步，所述固定杆铰装于支撑板上而成为摆杆，所述支撑板上设有将向前摆动的摆杆限止在竖直位的挡销，所述支撑板与摆杆之间设有锁定摆杆摆动位置的锁紧件。
本发明(实用新型)的有益效果：
采用本发明(实用新型)全轨型轨头磨耗测量装置在检测铁轨时，不再需要配备多种标准检具对各型号磨耗仪对零，每个工务段只需一把测量装置即可对所有型号的铁轨进行磨耗绝对测量，经济实用，结构简单，调整灵活，适应轨道交通部门对各种轨型磨耗的测量需要。
附图说明
图1为本发明(实用新型)一种实施方式的主视图。
图2为图1实施方式的背视图。
图3为图1实施方式测量UIC50型导轨轨头顶部磨耗的示意图。
图4为图1实施方式测量各种型号导轨轨头侧工作面磨耗的示意图。
图5为图1实施方式测量UIC60型导轨轨头顶部与其护轨轨头顶部高度差的示意图。
图号标识：1、卡尺尺身；1-1、尺身测爪；1-2尺身测头；2、卡尺尺框；2-1、尺框测爪；2-2、尺框测头；3、测块；4、支撑板；5、摆杆；6、滑块；7、测杆；8、挡销；9、铁轨；10、限位销。
具体实施方式
下面结合附图所示实施方式对本发明(实用新型)的技术方案作进一步说明。
本发明(实用新型)全轨型轨头磨耗测量装置，包括卡尺尺身1和卡尺尺框2，所述卡尺尺框2安装于卡尺尺身1并可手动操作于卡尺尺身1上前、后滑动，所述卡尺尺身1的尺身测爪1-1的底部设有向后的尺身测头1-2，所述尺身测爪1-1上自上而下刻制有多条刻度线，各条刻度线分别为国际铁路联盟规定的型号UIC60(最大重型轨)、UIC50……UIC38(最小轻型轨)或其他型号铁轨9的测量位置，UIC60、UIC50……UIC38型号的铁轨9的尺寸 大小递减，所述卡尺尺框2的尺框测爪2-1的底部设有向前与尺身测头1-2相对的尺框测头2-2，于卡尺尺框2的前止位，所述尺身测头1-2与尺框测头2-2距离为零(两测头的测面相抵触)，此时所述卡尺尺框2上的读数尺Ⅰ与卡尺尺身1上的刻度尺Ⅰ对“0”，卡尺尺框2的后止位由卡尺尺身1后端的螺钉限位，如图1、图2所示。
所述尺身测爪1-1上滑动安装有测块3并可手动上、下调节位置以适应对某一型号铁轨9的测量，所述测块3的后侧面上开设有直角定位卡口(直角定位卡头的一种类型)，所述直角定位卡口的竖直面向下对齐尺身测头1-2的后端测面，直角定位卡口的水平面向后超过尺身测头1-2的后端测面，如图1、图2所示。
所述尺框测爪2-1的后上部与卡尺尺框2的下部之间安装有支撑板4，一摆杆5的上端铰装于支撑板4上，所述摆杆5可手动前、后调节摆动位置，所述支撑板4上设有挡销8而限定摆杆5向前的摆动位置，于挡销8的限定位置，摆杆5处于竖直向下的摆动位；一滑块6安装于摆杆5的杆体上，一测杆7沿垂直于杆体方向安装于滑块6上，所述测杆7的前端为由底测面和顶测面构成的直角测头，所述滑块6可手动上、下调节于摆杆5上的位置，测杆7可手动前、后调节于滑块6上的位置，尺框测爪2-1上设有限位销10(限位结构的一种类型，作用在测杆7上限制其向上滑动的位置)，当测杆7上的读数尺Ⅱ与滑块6上的刻度尺Ⅱ对“0”时，测杆7的顶测面(处于竖直面上)向下对齐尺框测头2-2的前端测面，如图1、图2所示。
所述卡尺尺身1与卡尺尺框2之间、所述尺身测爪1-1与测块3之间、所述滑块6与摆杆5之间、所述测杆7与滑块6之间均设有锁定卡尺尺框2、测块3、滑块6、测杆7调节位置的锁紧件，所述支撑板4与摆杆5之间设有锁定摆杆5摆动位置的锁紧件，如图1、图2所示。
如图3所示的实施例一，为采用本发明(实用新型)测量UIC50型铁轨9轨头顶部的磨耗：
1、调节测块3的位置，使得测块3的顶面压实于UIC50刻度线。
2、调节摆杆5向后摆开，使其不干涉测量过程。
3、向后滑动卡尺尺框2，使得尺身测爪1-1与尺框测爪2-1之间的距离大于UIC50型铁轨9的高度尺寸。
4、将尺身测爪1-1和尺框测爪2-1卡入UIC50型铁轨9，测块3的直角定位卡口卡合于UIC50型铁轨9一侧的底部与侧部交汇处，尺身测头1-2抵于UIC50型铁轨9的底部。
5、向前滑动卡尺尺框2使得尺框测头2-2抵于UIC50型铁轨9的顶部。
6、锁定卡尺尺框2位置并取下卡尺，通过读数尺Ⅰ与刻度尺Ⅰ的位置关系读出UIC50型铁轨9顶部的高度尺寸。
7、将测量的UIC50型铁轨9顶部的实际高度尺寸与UIC50型铁轨9顶部的标准高度尺寸进行比较，即可得出所测UIC50型铁轨9顶部的磨耗。
如图4所示的实施例二，为采用本发明(实用新型)测量任意型号铁轨9轨头侧工作面的磨耗：
1、调节测块3处于任意位置上，该位置与刻度线无关。
2、调节摆杆5向前摆动并处于竖直位置，将测杆7向前滑动至合适位置，向上调节滑块6至测杆7被限位于限位销10，于该限位位置，测杆7的底测面与尺框测头2-2中心之间的距离满足轨侧的测位高度要求。
3、向后滑动卡尺尺框2，使得尺身测爪1-1与尺框测爪2-1之间的距离大于铁轨9顶部的宽度尺寸。
4、将尺身测爪1-1和尺框测爪2-1卡入铁轨9，将尺身测头1-2和尺框测头2-2对位在铁轨9的两轨侧。
5、向前滑动卡尺尺框2使得尺身测头1-2和尺框测头2-2夹持住铁轨9的两轨侧，此时的测杆7的直角测头的底测面处于铁轨9的顶部。
6、锁定卡尺尺框2位置并取下卡尺，通过读数尺Ⅰ与刻度尺Ⅰ的位置关系读出铁轨9轨头侧工作面的宽度尺寸。
7、将测量的铁轨9轨头侧工作面的实际宽度尺寸与该铁轨9轨头侧工作面的标准宽度尺寸进行比较，即可得出所测铁轨9轨头侧工作面的磨耗。
如图5所示的实施例三，为采用本发明(实用新型)测量UIC60型铁轨9的护轨顶部与主轨顶部的高度差：
1、调节测块3的位置，使得测块3顶面压实于UIC60刻度线。
2、调节摆杆5向前摆动至竖直位，向下调节滑块6至低于尺框测头2-2的位置，将测杆7向后滑动使其直角测头超过尺框测头2-2。
3、向后滑动卡尺尺框2，使得尺身测爪1-1与尺框测爪2-1之间的距离大于UIC60型铁轨9(主轨)的高度尺寸。
4、将尺身测爪1-1和尺框测爪2-1卡入UIC60型铁轨9的主轨，测块3的直角定位卡口卡合于UIC60型铁轨9主轨一侧的底部与侧部交汇处，尺身测头1-2抵于UIC60型铁轨9主轨的底部。
5、向前滑动卡尺尺框2使得尺框测头2-2抵于UIC60型铁轨9主轨的顶部，将测杆7向前滑动抵于UIC60型铁轨9护轨的的顶部。
6、锁定卡尺尺框2位置和测杆7位置并取下卡尺，通过测杆7与滑块6之间的读数尺Ⅱ与刻度尺Ⅱ的位置关系读出UIC60型铁轨9的护轨顶部与主轨顶部之间的高度差尺寸。

Claims (7)

  1. 全轨型轨头磨耗测量装置，包括卡尺尺身(1)和于卡尺尺身(1)上前、后滑动的卡尺尺框(2)，所述卡尺尺身(1)的尺身测爪(1-1)上设置的尺身测头(1-2)与卡尺尺框(2)的尺框测爪(2-1)上设置的尺框测头(2-2)相对而置，所述尺身测头(1-2)与尺框测头(2-2)距离为零时，所述卡尺尺框(2)上的读数尺Ⅰ与卡尺尺身(1)上的刻度尺Ⅰ对“0”、或卡尺尺框(2)上的数显屏显示为“0”，其特征在于：
    所述尺身测爪(1-1)上设有上、下滑动调节测量位置的测块(3)，所述测块(3)后侧设有由垂直定位面和水平定位面构成的直角定位卡头，所述垂直定位面平齐于尺身测头(1-2)的测面，直角定位卡头的水平定位面垂直于与尺身测头(1-2)的测面；
    所述尺框测爪(2-1)后侧设有支撑板(4)，所述支撑板(4)上竖直向下安装有固定杆，所述固定杆的杆体上设有滑块(6)，所述滑块(6)上沿垂直于杆体方向滑动设有测杆(7)，所述测杆(7)的前端部为由底测面和顶测面构成的直角测头，所述测杆(7)的顶测面对齐尺框测头(2-2)的测面，测杆(7)上的读数尺Ⅱ与滑块(6)上的刻度尺Ⅱ对“0”；
    所述卡尺尺身(1)与卡尺尺框(2)之间、所述尺身测爪(1-1)与测块(3)之间、所述滑块(6)与固定杆之间、所述测杆(7)与滑块(6)之间均设有锁定卡尺尺框(2)、测块(3)、滑块(6)、测杆(7)滑动位置的锁紧件。
  2. 根据权利要求1所述的全轨型轨头磨耗测量装置，其特征在于：所述尺身测爪(1-1)上刻制有壹条刻度线对应于所要测量的一铁轨型号，或尺身测爪(1-1)上自上而下刻制有两条以上刻度线，不同刻度线对应于所要测量铁轨(9)的型号自大而小。
  3. 根据权利要求2所述的全轨型轨头磨耗测量装置，其特征在于：多条刻度线中，最上端刻度线对应于最大重型铁轨(9)的测量位置，最下端刻度线对应于最小轻型铁轨(9)的测量位置。
  4. 根据权利要求1～3中任意一项所述的全轨型轨头磨耗测量装置，其特征在于：所述尺框测爪(2-1)与测杆(7)之间或固定杆与滑块(6)之间设有限制测杆(7)上滑位的限位结构。
  5. 根据权利要求4所述的全轨型轨头磨耗测量装置，其特征在于：所述限位结构包括于尺框测爪(2-1)上设置的限位销(10)，或限位结构为刻制在固定杆上的刻度线。
  6. 根据权利要求1～3中任意一项所述的全轨型轨头磨耗测量装置，其特征在于：所述直角定位卡头为开设于尺身测爪(1-1)上的直角定位卡口。
  7. 根据权利要求1～3中任意一项所述的全轨型轨头磨耗测量装置，其特征在于：所述固定杆铰装于支撑板(4)上而成为摆杆(5)，所述支撑板(4)上设有将向前摆动的摆杆(5)限止在竖直位的挡销(8)，所述支撑板(4)与摆杆(5)之间设有锁定摆杆(5)摆动位置的锁紧件。
PCT/CN2021/095693 2020-10-15 2021-05-25 全轨型轨头磨耗测量装置 WO2022077911A1 (zh)

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