WO2007006210A1 - Rolling contact fatigue tester for inspecting the simulated working condition - Google Patents

Rolling contact fatigue tester for inspecting the simulated working condition Download PDF

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Publication number
WO2007006210A1
WO2007006210A1 PCT/CN2006/001584 CN2006001584W WO2007006210A1 WO 2007006210 A1 WO2007006210 A1 WO 2007006210A1 CN 2006001584 W CN2006001584 W CN 2006001584W WO 2007006210 A1 WO2007006210 A1 WO 2007006210A1
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Prior art keywords
emergency stop
sensor
test
loading
testing machine
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PCT/CN2006/001584
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French (fr)
Chinese (zh)
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WO2007006210B1 (en
Inventor
Yulin Yang
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Yanshan University
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Publication of WO2007006210A1 publication Critical patent/WO2007006210A1/en
Publication of WO2007006210B1 publication Critical patent/WO2007006210B1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/56—Investigating resistance to wear or abrasion
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/0202—Control of the test
    • G01N2203/0204—Safety arrangements, e.g. remote control, emergency stop
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/022—Environment of the test
    • G01N2203/0244—Tests performed "in situ" or after "in situ" use
    • G01N2203/0246—Special simulation of "in situ" conditions, scale models or dummies

Definitions

  • the invention relates to a contact fatigue friction and wear testing machine, which is a machine for simulating actual working conditions and capable of detecting contact fatigue friction and wear on line.
  • Coating adhesion tester manufactured by American Group Co., Ltd., although it can measure coating adhesion under standard micro conditions, the surface coating material properties obtained by local microscopic measurement and the surface coating of the contact area under actual working conditions The performance behavior of materials is very different, and it is difficult to meet the engineering use assessment requirements.
  • the “Rolling and Friction Composite Testing Machine” (Chinese Patent No. 03151240. 2) discloses a variable speed rolling and sliding friction composite testing machine, which is mainly characterized by a composite test function. However, this test machine can only be used for friction tests in normal temperature, normal, and non-lubricated environments.
  • the "ball bearing rolling contact fatigue life testing machine” (Chinese Patent No. 03230586. 9) discloses a bearing ball contact fatigue testing machine. The test machine judges the contact fatigue failure of the test bearing ball by monitoring the change of the amplitude parameter.
  • the above two test machines have no function of capturing the fatigue surface micro-crack failure, gluing failure and wear failure moment state of the friction side surface during the test; no simulated actual working conditions such as lubrication state, working temperature and working load.
  • the present invention provides a simulated rolling contact fatigue testing machine, which simulates by multi-parameter control such as load, rotation speed, temperature, lubrication form and contact state. Actual working conditions.
  • the technical solution adopted by the present invention to solve the technical problems thereof is as follows:
  • the working condition simulates a rolling contact fatigue testing machine, and comprises a test device, a loading device, a driving device, an oil analysis and lubrication device, and a signal collecting device, wherein:
  • the test device is partially composed of a test chamber, a temperature control chamber, an emergency stop cam, an upper test piece, a rolling element, and a lower test piece.
  • the temperature control chamber is set on the drive shaft, and the lower end of the test chamber is interference-fitted with the end of the drive shaft.
  • the lower test piece is assembled in the test cavity, the upper test piece is assembled on the stepped boss of the emergency stop cam, and the upper part is the rolling element between the test piece and the emergency stop cam
  • the end face is provided with a bearing and cooperates with the pressure block at the lower part of the loading lever;
  • the loading device may be composed of a pressure block, a loading lever, a weight loading and loading mechanism, one end of the loading lever is hingedly connected to the bracket, the other end is loaded with a weight loading mechanism, a lower part of the loading lever is provided with a pressure block, and a center of the pressure block has an oil inlet hole;
  • variable frequency motor of the driving device is fixed on the side of the machine base, and the variable frequency motor is connected and connected with the small pulley on the transmission shaft through the large pulley and the belt;
  • the oil analysis and lubrication device is composed of a flow meter, a pipeline, a lubrication pump station and an oil analyzer.
  • the lubrication pump station is connected to the test chamber through a pipeline, a pressure block oil inlet hole, and an oil inlet hole of the emergency stop cam;
  • the oil outlet is connected to the lubrication pump station through a pipeline and an oil analyzer;
  • the signal acquisition device is composed of a torque sensor, a temperature sensor, a speed sensor, an acceleration sensor, a noise sensor, a data riser card and a computer.
  • the torque sensor is mounted on the lower end of the shaft, and the torque transmission shaft is fixed on the bracket through the bearing seat, and the upper end of the torque transmission shaft
  • the gear and the friction clutch are mounted; the gear meshes with the outer circumferential teeth of the emergency stop cam; the temperature sensor is placed in the annular groove on the upper surface of the emergency stop cam; the speed sensor is fixed on the base, and the pulley transmits the speed pulse signal during the rotation Giving a speed sensor; the noise sensor is placed in a hole in one side of the temperature control chamber;
  • the degree sensor is mounted on the upper part of the loading lever loading end; the contact switch is fixed on the side of the loading lever; the output signal of the above sensor is input to the computer through the adapter card for processing.
  • the above-mentioned working condition simulates a rolling contact fatigue testing machine, wherein the outer circumference of the emergency stop cam is machined with gear teeth, the upper end surface has a cylindrical cam, the cylindrical cam has an annular groove around the center, and the center is machined into the oil hole; The lower end surface has a stepped boss, and the stepped boss cooperates with the upper test piece.
  • an oil outlet hole and a through hole for placing a noise sensor are processed around the temperature control cavity, and the mobile heater is installed outside the temperature control cavity; the cavity
  • the upper part is the loading part of the test piece, the lower part is the matching hole of the drive shaft, and the inner surface of the hole is processed with a sealing groove.
  • the above-mentioned working conditions simulate the rolling contact fatigue testing machine, and the hydraulic load can also be applied.
  • the hydraulic cylinder is mounted on the frame of the machine base, and the hydraulic pressure block is installed at the end of the piston rod of the hydraulic cylinder, and the upper end surface of the emergency stop cam is mounted.
  • the bearing (such as a needle bearing) is matched with the hydraulic pressure block, and the hydraulic pressure block is processed to have an oil inlet hole communicating with the oil inlet hole of the emergency stop cam.
  • the invention has the beneficial effects that: the fatigue fatigue test is shortened by adding abrasive grains and reducing the number of bearing rolling bodies, and the fatigue test time is shortened; the coating material can be directly deposited on the surface of the thrust bearing raceway, and the coating material can be deposited on the surface of the thrust bearing.
  • the surface of the ring specimen with the same inner and outer diameter of the thrust bearing is tested and evaluated for the contact fatigue wear of various surface coating materials; the lever load or hydraulic loading is used to effectively control and simulate the actual working condition load; Force, friction torque, temperature, speed, vibration acceleration and its changes are accurately measured and recorded online; using cam emergency stop mechanism and fault diagnosis system can diagnose surface microcrack initiation and surface failure online, and can perform emergency stop in real time, protect transient Contact surface condition;
  • the composition change of lubricating oil in the lubrication system can be monitored online, and the performance parameters and tribological parameters of lubricating oil, grease oil can be evaluated.
  • Figure 1 is a schematic view showing the structure of a lever-loaded contact fatigue friction and wear tester.
  • Figure 1 is a left side view of the structure of the lever-loaded contact fatigue friction and wear test machine.
  • Figure 3 is a schematic view showing the structure of a hydraulically loaded contact fatigue friction and wear tester.
  • Figure 4 is a schematic diagram of the structure of the emergency stop cam.
  • Figure 5 is a schematic view of the structure of the test chamber.
  • Figure 6 is a schematic diagram of the structure of the temperature control chamber.
  • Figure 7 is a schematic view showing the structure of the upper test piece.
  • Figure 8 is a schematic view showing the structure of the lower test piece.
  • Figure 1 and Figure 2 are an embodiment of the present invention (see Figures 1, 2).
  • Plane (as shown in Figure 7 and Figure 8), after which the coating material is deposited on the upper test piece by coating process equipment, The surface of the rolling body 16 or the lower test piece 17.
  • the test piece is placed in the test chamber 7 (please refer to FIG. 5), the starter motor 21 is adjusted to the rotational speed, and then loaded to activate the lubrication and cooling device 25 and the signal acquisition device.
  • the large pulley 20 of the variable frequency motor 21 drives the small pulley 4 and the transmission shaft 8 to rotate through the belt 19, and transmits the speed signal to the speed sensor 18.
  • the transmission shaft 8 drives the test chamber 7 to rotate together, and the rolling body 16 and the lower test piece 17 follow Rotation.
  • the lubricating oil is supplied to the test chamber 7 from the lubrication system 25, the pipes 23, 24, the oil inlet hole of the pressure block 13 and the center hole of the emergency stop cam 11 (refer to Fig. 4), after lubricating or cooling the test piece.
  • the test chamber outlet hole 10 flows into the temperature control chamber 5 through the oil outlet hole 6 (the structure thereof is shown in Fig. 6), the pipe 27 and the oil analyzer 26, and then flows into the lubrication pump station 25.
  • the mobile heater 41 is mounted outside the temperature control chamber 5; the weight loading mechanism +35 amplifies the applied load by the lever 33, and is applied to the test piece by the pressure block 13, the bearing 14, and the emergency stop cam 11.
  • the vibration signal is amplified and transmitted to the acceleration sensor 34 through the lever 33; the torque signal is transmitted to the torque sensor 2 through the torque transmission shaft 3 through the circumferential teeth of the emergency stop cam 11 and the gear 29; the temperature signal passes through the oil in the groove around the emergency stop cam 11.
  • the medium is passed directly to the temperature sensor 32.
  • the fault diagnosis system realizes the emergency stop by setting the temperature signal, the speed signal, the vibration signal, the noise signal and the torque signal threshold by the control software.
  • Figure 3 is another embodiment of the present disclosure (see Figure 3).
  • the upper end of the hydraulic cylinder 36 is fixedly coupled to the frame 39, and the hydraulic pressure block 40 is mounted on the piston rod of the cylinder 36, hydraulic pressure block.
  • the side of the 40 is fixed to the contact switch 31, and the acceleration sensor 34 is screwed to the arc plane of the emergency stop cam 11.
  • a temperature sensor 32 is placed in the recess of the emergency stop cam 11, and the cylindrical cam is in contact with the contact switch 31.
  • N frequency motor drives the large pulley 20 via a belt 19 to drive pulley 4 small, small belt
  • the wheel 4 drives the transmission shaft 8 to rotate
  • the transmission shaft 8 is fixed to the bracket 26 through the bearing and the bearing support
  • the upper end of the transmission shaft 8 is connected to the test chamber 7 to drive the lower test piece 17 to rotate
  • the upper end of the upper test piece 15 is an emergency stop convex-wheel 11
  • the emergency stop cam 11 is meshed with the gear 29, and the upper portion is in contact with the hydraulic pressure block 40 through the bearing 14, and the pressure applied by the hydraulic cylinder 36 is transmitted.
  • the pressure of the hydraulic cylinder 36 is supplied by the hydraulic system.
  • the lubricating oil is mixed by the lubrication pumping station 25 through the pipes 23, 24, respectively, and then flows into the test chamber 7 through the hydraulic pressure block 40 and the oil inlet hole 12 of the emergency stop cam 11 to lubricate or cool the upper test piece 15, the rolling element. 16.
  • the lower test piece 17 is then passed through the test chamber 7 to the temperature control chamber 5 and through the temperature control chamber.
  • the oil outlet 6 flows through the oil analyzer 26 through the conduit 27 and flows into the lubrication pump station 25.
  • the torque sensor 2 detects the torque signal transmitted by the gear 29; the speed sensor 18 detects the rotational speed of the test piece; the flow meter 22 detects the lubricating oil flow rate; the oil analyzer 26 monitors the change of the composition of the lubricating oil during the experiment; the noise sensor 30 monitors the test The noise signal during the rotation of the piece; the contact switch 31 and the cam of the emergency stop cam 11 monitor the frictional surface condition of the friction pair; the temperature sensor 32 detects the temperature signal of the test piece; the acceleration sensor 34 detects the vibration signal of the bearing test piece; Input to the computer for processing via the riser card.
  • the invention not only detects the on-line instantaneous rolling contact fatigue friction and wear process of the surface coating or the non-coated friction pair surface, but also performs the emergency contact protection instantaneous contact fatigue state when the crack generation, the fatigue failure and the glue failure are found; Layer process, lubricant and grease lubrication effects are tested and evaluated to achieve fast fatigue wear test, shorten fatigue test time; test the life of the thrust bearing, limit speed, load carrying capacity and raceway surface coating process assessment.

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

An on-line rolling contact fatigue tester for inspecting the simulated working condition. Said tester comprises driving means, loading means, testing means, lubricant oil analysis and lubricating means and signal collecting means. Wherein, said testing means comprises a testing cavity and a temperature control cavity. Said temperature control cavity is interlinked with a transmission shaft. The lower end of said testing cavity is interference fitted with the end of said transmission shaft and set in the temperature cavity. An upper sample, a rolling element and a lower sample are set in the testing cavity. An abruptly stopping cam is set above the said upper sample, a needle thrust bearing is set on the upper surface of said cam and conjugated with the pressure block of a loading lever.

Description

Figure imgf000003_0001
Figure imgf000003_0001
技术领域 Technical field
本发明涉及一种接触疲劳摩擦磨损试验机， 特^是一种模拟实际工况 并能在线检测接触疲劳摩擦磨损试验机。  The invention relates to a contact fatigue friction and wear testing machine, which is a machine for simulating actual working conditions and capable of detecting contact fatigue friction and wear on line.
背景技术 Background technique
表面摩擦磨损状态、 接触疲劳寿命是评价涂层工艺优劣、 涂层材料表 面性能的主要手段之一。 目前， 还没有一种完整的能模拟实际工况进行涂 层材料摩擦磨损状态和疲劳寿命检测的接触疲劳摩擦磨损试验机。  Surface friction and wear and contact fatigue life are one of the main methods to evaluate the quality of the coating process and the surface properties of the coating material. At present, there is no complete contact fatigue friction and wear tester that can simulate the frictional wear state and fatigue life of coating materials under actual working conditions.
美国方群公司制造的涂层粘附力测量仪， 虽然能够在标准微观条件下 进行涂层粘附力测量， 但是局部微观测量得到的表面涂层材料性能与实际 工况下接触区表面涂层材料的表现行为有很大的差别， 难以满足工程使用 评估要求。  Coating adhesion tester manufactured by American Group Co., Ltd., although it can measure coating adhesion under standard micro conditions, the surface coating material properties obtained by local microscopic measurement and the surface coating of the contact area under actual working conditions The performance behavior of materials is very different, and it is difficult to meet the engineering use assessment requirements.
《滚动与摩擦复合试验机》 （中国专利 03151240. 2 )公开的是一种可 变速的滚动与滑动摩擦复合试验机， 其主要特点是具有复合试验功能。 但 是， 这种试验机只能用于常温、 常规、 无润滑环境下的摩擦试验。 《轴承 球滚动接触疲劳寿命试验机》 （中国专利 03230586. 9 )公开的是一种专用 于轴承球体接触疲劳试验机。 该试验机通过监控振幅参量的变化判别试验 轴承球体的接触疲劳失效。 上述两种试验机均无捕捉试验过程中摩擦副表 面疲劳微裂失效、 胶合失效和磨损失效瞬间状态的功能； 无模拟实际工况 润滑状态、 工况温度、 工况载荷等功能。  The "Rolling and Friction Composite Testing Machine" (Chinese Patent No. 03151240. 2) discloses a variable speed rolling and sliding friction composite testing machine, which is mainly characterized by a composite test function. However, this test machine can only be used for friction tests in normal temperature, normal, and non-lubricated environments. The "ball bearing rolling contact fatigue life testing machine" (Chinese Patent No. 03230586. 9) discloses a bearing ball contact fatigue testing machine. The test machine judges the contact fatigue failure of the test bearing ball by monitoring the change of the amplitude parameter. The above two test machines have no function of capturing the fatigue surface micro-crack failure, gluing failure and wear failure moment state of the friction side surface during the test; no simulated actual working conditions such as lubrication state, working temperature and working load.
发明内容 为了满足工程应用对表面涂层摩擦副零件使用性能精确评估要求， 本 发明提供一种工况模拟滚动接触疲劳试验机， 通过对载荷、 转速、 温度、 润滑形式、 接触状态等多参数控制来模拟实际工况。 Summary of the invention In order to meet the requirements of engineering application for accurate evaluation of the performance of surface coating friction pair parts, the present invention provides a simulated rolling contact fatigue testing machine, which simulates by multi-parameter control such as load, rotation speed, temperature, lubrication form and contact state. Actual working conditions.
本发明解决其技术问题所采用的技术方案是： 这种工况模拟滚动接触 疲劳试验机， 构成包括试验装置、 加载装置、 驱动装置、 油品分析与润滑 装置及信号采集装置各部分， 其中：  The technical solution adopted by the present invention to solve the technical problems thereof is as follows: The working condition simulates a rolling contact fatigue testing machine, and comprises a test device, a loading device, a driving device, an oil analysis and lubrication device, and a signal collecting device, wherein:
试验装置部分由试验腔、 温度控制腔、 急停凸轮、 上试件、 滚动体、 和下试件构成， 温度控制腔套装在传动轴上， 试验腔的下端与传动轴的端 部过盈配合， 并置于温度控制腔之中， 下试件装配在试验腔内， 上试件装 配在急停凸轮阶梯状凸台上， 上 ^_下试件之间为滚动体， 急停凸轮的上端 面装有轴承并与加载杠杆下部的压力块相配合；  The test device is partially composed of a test chamber, a temperature control chamber, an emergency stop cam, an upper test piece, a rolling element, and a lower test piece. The temperature control chamber is set on the drive shaft, and the lower end of the test chamber is interference-fitted with the end of the drive shaft. And placed in the temperature control cavity, the lower test piece is assembled in the test cavity, the upper test piece is assembled on the stepped boss of the emergency stop cam, and the upper part is the rolling element between the test piece and the emergency stop cam The end face is provided with a bearing and cooperates with the pressure block at the lower part of the loading lever;
加载装置可由压力块、 加载杠杆、 砝码加载装机构构成， 加载杠杆一 端与支架铰链连接， 另一端安装砝码加载机构， 加载杠杆下部装有压力块， 压力块的中心有进油孔；  The loading device may be composed of a pressure block, a loading lever, a weight loading and loading mechanism, one end of the loading lever is hingedly connected to the bracket, the other end is loaded with a weight loading mechanism, a lower part of the loading lever is provided with a pressure block, and a center of the pressure block has an oil inlet hole;
驱动装置的变频电机固定在机座的侧面上， 变频电机通过大皮带轮、 皮带与传动轴上的小皮带轮传动连接；  The variable frequency motor of the driving device is fixed on the side of the machine base, and the variable frequency motor is connected and connected with the small pulley on the transmission shaft through the large pulley and the belt;
油品分析与润滑装置由流量计、 管道、 润滑泵站和油品分析仪构成， 润滑泵站通过管道、 压力块进油孔、 急停凸轮的进油孔与试验腔相连通； 温度控制腔的出油孔通过管道和油品分析仪与润滑泵站相连通；  The oil analysis and lubrication device is composed of a flow meter, a pipeline, a lubrication pump station and an oil analyzer. The lubrication pump station is connected to the test chamber through a pipeline, a pressure block oil inlet hole, and an oil inlet hole of the emergency stop cam; The oil outlet is connected to the lubrication pump station through a pipeline and an oil analyzer;
信号采集装置由扭矩传感器、 温度传感器、 速度传感器、 加速度传感 器、 噪声传感器、 数据转接卡和计算机构成， 扭矩传感器安装在轴的下端， 扭矩传动轴通过轴承座固定在支架上， 扭矩传动轴上端安装齿轮和摩擦离 合器； 齿轮与急停凸轮的外圆周轮齿相啮合； 温度传感器置于急停凸轮上 表面环形凹槽内； 速度传感器固定在基座上， 转动过程中皮带轮将转速脉 冲信号传递给速度传感器； 噪声传感器放置在温度控制腔一侧孔内； 加速 度传感器安装在加载杠杆加载端的上部； 接触开关固定在加载杠杆侧面； 上述传感器的输出信号通过转接卡输入到计算机进行处理。 The signal acquisition device is composed of a torque sensor, a temperature sensor, a speed sensor, an acceleration sensor, a noise sensor, a data riser card and a computer. The torque sensor is mounted on the lower end of the shaft, and the torque transmission shaft is fixed on the bracket through the bearing seat, and the upper end of the torque transmission shaft The gear and the friction clutch are mounted; the gear meshes with the outer circumferential teeth of the emergency stop cam; the temperature sensor is placed in the annular groove on the upper surface of the emergency stop cam; the speed sensor is fixed on the base, and the pulley transmits the speed pulse signal during the rotation Giving a speed sensor; the noise sensor is placed in a hole in one side of the temperature control chamber; The degree sensor is mounted on the upper part of the loading lever loading end; the contact switch is fixed on the side of the loading lever; the output signal of the above sensor is input to the computer through the adapter card for processing.
上述的工况模拟滚动接触疲劳试验机， 所说的急停凸轮的外圆周加工 有轮齿， 其上端面有圆柱凸轮， 圆柱凸轮周围有环形凹槽， 中心加工进油 孔； 急停凸轮的下端面有阶梯状凸台， 阶梯状凸台与上试件相配合。  The above-mentioned working condition simulates a rolling contact fatigue testing machine, wherein the outer circumference of the emergency stop cam is machined with gear teeth, the upper end surface has a cylindrical cam, the cylindrical cam has an annular groove around the center, and the center is machined into the oil hole; The lower end surface has a stepped boss, and the stepped boss cooperates with the upper test piece.
上述的工况模拟滚动接触疲劳试验机， 所说的试验腔腔体周围有至少 一个（如可设置 3-5个） 出油孔， 腔体上部为试件放入端， 底部有与下试 件定位孔和传动轴的配合孔。  In the above-mentioned working condition simulation rolling contact fatigue testing machine, there is at least one (such as 3-5) oil outlets around the test chamber cavity, the upper part of the cavity is the test piece insertion end, and the bottom part has the lower test. A matching hole for the positioning hole and the drive shaft.
上述的工况模拟滚动接触疲劳试验机， 所说的温度控制腔腔体周围加 工一个出油孔和一个放置噪声传感器的通孔， 移动式加热器安装在温度控 制腔腔体的外部； 腔体上部为试件装入端， 下部为传动轴配合孔， 并在孔 内表面加工有密封槽。  In the above-mentioned working condition simulation rolling contact fatigue testing machine, an oil outlet hole and a through hole for placing a noise sensor are processed around the temperature control cavity, and the mobile heater is installed outside the temperature control cavity; the cavity The upper part is the loading part of the test piece, the lower part is the matching hole of the drive shaft, and the inner surface of the hole is processed with a sealing groove.
上述的工况模拟滚动接触疲劳试验机 , 也可以采用液压施加载荷， 液 压缸安装在机座的机架上， 液压缸活塞杆的端部安装液压加压块， 急停凸 轮的上端面装有轴承（如滚针轴承） 与液压加压块相配合， 液压加压块加 工有进油通孔与急停凸轮的进油孔相连通。  The above-mentioned working conditions simulate the rolling contact fatigue testing machine, and the hydraulic load can also be applied. The hydraulic cylinder is mounted on the frame of the machine base, and the hydraulic pressure block is installed at the end of the piston rod of the hydraulic cylinder, and the upper end surface of the emergency stop cam is mounted. The bearing (such as a needle bearing) is matched with the hydraulic pressure block, and the hydraulic pressure block is processed to have an oil inlet hole communicating with the oil inlet hole of the emergency stop cam.
本发明的有益效果是： 通过添加磨粒、 减少轴承滚动体数目实现快速 疲劳磨损试验， 缩短疲劳试验时间； 可以直接将涂层材料沉积在推力轴承 滚道表面， 也可将涂层材料沉积在与推力轴承内、 外圆直径相同的环片试 件表面， 对其各种表面涂层材料接触疲劳磨损进行检测评定； 采用杠杆加 载或液压加载有效控制和模拟实际工况载荷； 测试***对摩擦力、 摩擦扭 矩、 温度、 转速、 振动加速度及其变化进行在线精确测量和记录； 采用凸 轮急停机构和故障诊断***能在线诊断表面微裂纹萌生和表面失效， 并能 实时进行急停， 保护瞬时接触表面状态； 可在线监测润滑***润滑油的成 份变化， 可对润滑油、 润滑脂油品性能参数和摩擦学参数进行评价。 ■ 附图说明 The invention has the beneficial effects that: the fatigue fatigue test is shortened by adding abrasive grains and reducing the number of bearing rolling bodies, and the fatigue test time is shortened; the coating material can be directly deposited on the surface of the thrust bearing raceway, and the coating material can be deposited on the surface of the thrust bearing. The surface of the ring specimen with the same inner and outer diameter of the thrust bearing is tested and evaluated for the contact fatigue wear of various surface coating materials; the lever load or hydraulic loading is used to effectively control and simulate the actual working condition load; Force, friction torque, temperature, speed, vibration acceleration and its changes are accurately measured and recorded online; using cam emergency stop mechanism and fault diagnosis system can diagnose surface microcrack initiation and surface failure online, and can perform emergency stop in real time, protect transient Contact surface condition; The composition change of lubricating oil in the lubrication system can be monitored online, and the performance parameters and tribological parameters of lubricating oil, grease oil can be evaluated. ■ DRAWINGS
图 1为杠杆加载式接触疲劳摩擦磨损试验机结构示意图。  Figure 1 is a schematic view showing the structure of a lever-loaded contact fatigue friction and wear tester.
图 1为杠杆加载式接触疲劳摩擦磨损试检机结构左视图。  Figure 1 is a left side view of the structure of the lever-loaded contact fatigue friction and wear test machine.
图 3为液压加载式接触疲劳摩擦磨损试验机结构示意图。  Figure 3 is a schematic view showing the structure of a hydraulically loaded contact fatigue friction and wear tester.
图 4为急停凸轮结构示意图。  Figure 4 is a schematic diagram of the structure of the emergency stop cam.
图 5为试验腔结构示意图。  Figure 5 is a schematic view of the structure of the test chamber.
图 6为温度控制腔结构示意图。  Figure 6 is a schematic diagram of the structure of the temperature control chamber.
图 7为上试件结构示意图。  Figure 7 is a schematic view showing the structure of the upper test piece.
图 8为下试件结构示意图。  Figure 8 is a schematic view showing the structure of the lower test piece.
在图 1、 图 2、 图 3 中， 1.机座， 2.扭矩传感器， 3.扭矩传动轴， 4. 小皮带轮， 5.温度控制腔， 6.出油孔， 7.试验腔， 8.传动轴， 9.摩擦离合 器， 10. 出油孔， 11.急停凸轮， 12.进油孔， 13.压力块， 14.轴承， 15.上 试件， 16.滚动体, 17.下试件， 18.速度传感器， 19.皮带, 20.大皮带轮, 21.变频电机， 22.流量计， 23.管道， 24.管道， 25.润滑泵站， 26.油品分 析仪， 27.管道， 28.支架， 29.齿轮， 30.噪声传感器， 31.接触开关， 32. 温度传感器， 33.杠杆， 34.加速度传感器， 35.砝码加载机构， 36. 缸， 37. 进油管， 38.回油管， 39.机架， 40.液压加压块， 41.移动式加热器.  In Figure 1, Figure 2, Figure 3, 1. Base, 2. Torque sensor, 3. Torque drive shaft, 4. Small pulley, 5. Temperature control chamber, 6. Oil outlet, 7. Test chamber, 8 . Transmission shaft, 9. Friction clutch, 10. Oil outlet, 11. Emergency stop cam, 12. Oil inlet, 13. Pressure block, 14. Bearing, 15. Upper test piece, 16. Rolling element, 17. Lower Test piece, 18. Speed sensor, 19. Belt, 20. Large pulley, 21. Variable frequency motor, 22. Flow meter, 23. Pipe, 24. Pipe, 25. Lubrication pump station, 26. Oil analyzer, 27. Pipe, 28. Bracket, 29. Gear, 30. Noise sensor, 31. Contact switch, 32. Temperature sensor, 33. Lever, 34. Accelerometer, 35. Weight loading mechanism, 36. Cylinder, 37. Oil inlet pipe, 38. Return pipe, 39. Rack, 40. Hydraulic pressurizing block, 41. Mobile heater.
具体实施方式 detailed description
实施例 1  Example 1
图 1、 图 2是本发明公开的一个实施例 （见图 1、 图 2 ) ， 实臉之前， 按试验要求将所需检测的上试件 15和下试件 17的表面加工为滚道或平面 (如图 7、 图 8所示） ， 之后把涂层材料用涂层工艺设备沉积在上试件 15、 滚动体 16或下试件 17的表面。 将试件放入试验腔 7中（请参考图 5 ) , 启 动电机 21调整转速， 然后加载， 启动润滑冷却装置 25和信号采集装置。 由变频电动机 21的大皮带轮 20通过皮带 19带动小皮带轮 4和传动轴 8转 动， 并将速度信号传给速度传感器 18， 传动轴 8带动试验腔 7一起转动， 滚动体 16和下试件 17随之转动。根据试 要求， 将润滑油由润滑*** 25、 管道 23、 24、 压力块 13的进油孔和急停凸轮 11中心孔（请参考图 4 ) , 流入试验腔 7 , 对试件润滑或冷却后在离心力的作用下， 由试验腔出油孔 10流入温度控制腔 5经过出油孔 6 (其结构请参考图 6 ) 、 管道 27和油品 分析仪 26后流入润滑泵站 25。 移动式加热器 41安装在温度控制腔 5的外 部； 砝码加载机构 +35通过杠杆 33放大所施加的载荷， 通过压力块 13、 轴 承 14、 急停凸轮 11施加在试件上。 振动信号通过杠杆 33放大传递给加速 度传感器 34; 扭矩信号通过急停凸轮 11的周齿与齿轮 29啮合经扭矩传动 轴 3传递给扭矩传感器 2; 温度信号通过急停凸轮 11周围凹槽中的油介质 直接传给温度传感器 32。 在试件表面产生初始微裂纹或转动过程中润滑油 膜破坏时， 由于滚动体 16与上试件 15间摩擦力增大带动急停凸轮 11转动 触发接触开关 31实现自动停机。 临界摩擦力通过摩擦离合器 9设定； 同时 故障诊断***通过控制软件设定温度信号、 速度信号、 振动信号、 噪声信 号和扭矩信号阀值实现急停。 Figure 1 and Figure 2 are an embodiment of the present invention (see Figures 1, 2). Before the actual face, the surface of the upper test piece 15 and the lower test piece 17 to be tested are processed into raceways or according to test requirements. Plane (as shown in Figure 7 and Figure 8), after which the coating material is deposited on the upper test piece by coating process equipment, The surface of the rolling body 16 or the lower test piece 17. The test piece is placed in the test chamber 7 (please refer to FIG. 5), the starter motor 21 is adjusted to the rotational speed, and then loaded to activate the lubrication and cooling device 25 and the signal acquisition device. The large pulley 20 of the variable frequency motor 21 drives the small pulley 4 and the transmission shaft 8 to rotate through the belt 19, and transmits the speed signal to the speed sensor 18. The transmission shaft 8 drives the test chamber 7 to rotate together, and the rolling body 16 and the lower test piece 17 follow Rotation. According to the test requirements, the lubricating oil is supplied to the test chamber 7 from the lubrication system 25, the pipes 23, 24, the oil inlet hole of the pressure block 13 and the center hole of the emergency stop cam 11 (refer to Fig. 4), after lubricating or cooling the test piece. Under the action of centrifugal force, the test chamber outlet hole 10 flows into the temperature control chamber 5 through the oil outlet hole 6 (the structure thereof is shown in Fig. 6), the pipe 27 and the oil analyzer 26, and then flows into the lubrication pump station 25. The mobile heater 41 is mounted outside the temperature control chamber 5; the weight loading mechanism +35 amplifies the applied load by the lever 33, and is applied to the test piece by the pressure block 13, the bearing 14, and the emergency stop cam 11. The vibration signal is amplified and transmitted to the acceleration sensor 34 through the lever 33; the torque signal is transmitted to the torque sensor 2 through the torque transmission shaft 3 through the circumferential teeth of the emergency stop cam 11 and the gear 29; the temperature signal passes through the oil in the groove around the emergency stop cam 11. The medium is passed directly to the temperature sensor 32. When the initial microcrack is generated on the surface of the test piece or the lubricating oil film is broken during the rotation, the frictional force between the rolling element 16 and the upper test piece 15 increases, and the emergency stop cam 11 rotates to trigger the contact switch 31 to realize automatic stop. The critical friction force is set by the friction clutch 9; at the same time, the fault diagnosis system realizes the emergency stop by setting the temperature signal, the speed signal, the vibration signal, the noise signal and the torque signal threshold by the control software.
实施例 1 Example 1
图 3是本发明公开的另一个实施例 （见图 3 ) , 液压缸 36上端与机架 39固定连接， 液压加压块 40安装在'; |½缸 36的活塞杆上， 液压加压块 40 的侧面固定接触开关 31， 加速度传感器 34螺纹连接在急停凸轮 11圆弧平 面上。 急停凸轮 11的凹槽内放置温度传感器 32 , 圆柱凸轮与接触开关 31 接触。 变频电机 n带动大皮带轮 20通过皮带 19带动小皮带轮 4， 小皮带 轮 4带动传动轴 8转动， 传动轴 8通过轴承及轴承支座固定在支架 26, 传 动轴 8上端连接试验腔 7带动下试件 17转动， 上试件 15上端为急停凸 -轮 11， 急停凸轮 11周齿与齿轮 29啮合， 上部通过轴承 14与液压加压块 40 接触， 传递液压缸 36所施加压力， 液压缸 36的压力由液压***提供。 根 据试验要求， 将润滑油由润滑泵站 25分别通过管道 23、 24混合后经过液 压加压块 40和急停凸轮 11进油孔 12流入试验腔 7,润滑或冷却上试件 15、 滚动体 16、 下试件 17 , 然后通过试验腔 7出油孔 10流入到温度控制腔 5 并通过温度控制腔出油孔 6经管道 27流经油品分析仪 26后流入润滑泵站 25。 Figure 3 is another embodiment of the present disclosure (see Figure 3). The upper end of the hydraulic cylinder 36 is fixedly coupled to the frame 39, and the hydraulic pressure block 40 is mounted on the piston rod of the cylinder 36, hydraulic pressure block. The side of the 40 is fixed to the contact switch 31, and the acceleration sensor 34 is screwed to the arc plane of the emergency stop cam 11. A temperature sensor 32 is placed in the recess of the emergency stop cam 11, and the cylindrical cam is in contact with the contact switch 31. N frequency motor drives the large pulley 20 via a belt 19 to drive pulley 4 small, small belt The wheel 4 drives the transmission shaft 8 to rotate, the transmission shaft 8 is fixed to the bracket 26 through the bearing and the bearing support, and the upper end of the transmission shaft 8 is connected to the test chamber 7 to drive the lower test piece 17 to rotate, and the upper end of the upper test piece 15 is an emergency stop convex-wheel 11, The emergency stop cam 11 is meshed with the gear 29, and the upper portion is in contact with the hydraulic pressure block 40 through the bearing 14, and the pressure applied by the hydraulic cylinder 36 is transmitted. The pressure of the hydraulic cylinder 36 is supplied by the hydraulic system. According to the test requirements, the lubricating oil is mixed by the lubrication pumping station 25 through the pipes 23, 24, respectively, and then flows into the test chamber 7 through the hydraulic pressure block 40 and the oil inlet hole 12 of the emergency stop cam 11 to lubricate or cool the upper test piece 15, the rolling element. 16. The lower test piece 17 is then passed through the test chamber 7 to the temperature control chamber 5 and through the temperature control chamber. The oil outlet 6 flows through the oil analyzer 26 through the conduit 27 and flows into the lubrication pump station 25.
扭矩传感器 2检测由齿轮 29传递的扭矩信号； 速度传感器 18检测试 件的转速； 流量计 22检测润滑油流速； 油品分析仪 26监测实验过程中润 滑油的成分变化情况； 噪声传感器 30监测试件转动过程中的噪声信号； '接 触开关 31与急停凸轮 11凸轮接触监测摩擦副表面摩擦力状况； 温度传感 器 32检测试件温度信号； 加速度传感器 34检测轴承试件的振动信号； 各 路信号通过转接卡输入到计算机进行处理。  The torque sensor 2 detects the torque signal transmitted by the gear 29; the speed sensor 18 detects the rotational speed of the test piece; the flow meter 22 detects the lubricating oil flow rate; the oil analyzer 26 monitors the change of the composition of the lubricating oil during the experiment; the noise sensor 30 monitors the test The noise signal during the rotation of the piece; the contact switch 31 and the cam of the emergency stop cam 11 monitor the frictional surface condition of the friction pair; the temperature sensor 32 detects the temperature signal of the test piece; the acceleration sensor 34 detects the vibration signal of the bearing test piece; Input to the computer for processing via the riser card.
本发明不仅对表面涂层或非涂层摩擦副表面在线瞬时滚动接触疲劳摩 擦磨损过程进行检测， 而且当发现裂紋产生、 疲劳失效、 胶合失效时进行 急停保护瞬时接触疲劳状态； 可对表面涂层工艺、 润滑油和润滑脂润滑效 果进行检测评定并能实现快速疲劳磨损试验， 缩短疲劳试验时间； 还可以 对推力轴承的使用寿命、 极限转速、 承载能力和滚道表面涂层工艺进行检 测和评定。  The invention not only detects the on-line instantaneous rolling contact fatigue friction and wear process of the surface coating or the non-coated friction pair surface, but also performs the emergency contact protection instantaneous contact fatigue state when the crack generation, the fatigue failure and the glue failure are found; Layer process, lubricant and grease lubrication effects are tested and evaluated to achieve fast fatigue wear test, shorten fatigue test time; test the life of the thrust bearing, limit speed, load carrying capacity and raceway surface coating process assessment.

Claims

权利要求书 Claim
1.一种工况模拟滚动接触疲劳试验机， 其特征在于： 该试验机包括试 -险装置、 加载装置、 驱动装置、 油品分析与润滑装置、 信号采集装置各部. 分， 其中： 所述试验装置包括试验腔（ 7 )、 温度控制腔（ 5 )和试件（ 15, 16， 17) , 温度控制腔（5)套装在传动轴（8)上， 试验腔 (7)的下端与 传动轴（8)的端部过盈配合并置于温度控制腔（5)之中， 试验腔（7) 内 放置试件（15, 16, 17)； A working condition simulation rolling contact fatigue testing machine, characterized in that: the testing machine comprises a test-risk device, a loading device, a driving device, an oil analysis and lubrication device, and a signal acquisition device, wherein: The test device comprises a test chamber (7), a temperature control chamber (5) and test pieces (15, 16, 17), the temperature control chamber (5) is set on the drive shaft (8), the lower end of the test chamber (7) and the transmission The end of the shaft (8) is interference fit and placed in the temperature control chamber (5), and the test piece (15, 16, 17) is placed in the test chamber (7);
所述驱动装置带动试件转动， 加载装置向试件施加载荷， 油品分析与 润滑装置对试件润滑和冷却， 并检测试验过程中润滑油的成分变化情况， 信号采集装置采集试验过程中的多个信号并通过转接卡输入到计算机进行 处理。  The driving device drives the test piece to rotate, the loading device applies a load to the test piece, the oil analysis and the lubricating device lubricates and cools the test piece, and detects the change of the composition of the lubricating oil during the test, and the signal collecting device collects the test process. Multiple signals are input to the computer for processing via the riser card.
2. 如权利要求 1所述的工况模拟滚动接触疲劳试验机， 其特征在于： 所述试验装置还包括设置于所述上试件（15)上的急停凸轮（11) , 急停 凸轮（11)的上端面装有轴承（14)并与加载装置下部的压力块（13, 40) 相配合。  2. The condition simulation rolling contact fatigue testing machine according to claim 1, wherein: said testing device further comprises an emergency stop cam (11) disposed on said upper test piece (15), an emergency stop cam The upper end face of (11) is fitted with a bearing (14) and cooperates with a pressure block (13, 40) at the lower part of the loading device.
3.如权利要求 1所述的工况模拟滚动接触疲劳试验机， 其特征在于： 所说的急停凸轮（11) 的外圆周加工有齿形， 其上端面有圆柱凸轮， 圆柱 凸轮周围有凹槽， 中心加工进油孔， 急停凸轮（11)的下端面有阶梯状凸 台， 阶梯状凸台与上试件（15)相配合。  The working condition simulation rolling contact fatigue testing machine according to claim 1, wherein: the outer circumference of the emergency stop cam (11) is machined in a tooth shape, and the upper end surface has a cylindrical cam, and the cylindrical cam is surrounded by The groove, the center is machined into the oil hole, and the lower end surface of the emergency stop cam (11) has a stepped boss, and the stepped boss cooperates with the upper test piece (15).
4.如权利要求 3所述的工况模拟滚动接触疲劳试验机， 其特征在于： 所说的试验腔 (7)腔体周围有至少一个出油孔（10)， 腔体上部为试件放 入端， 底部有下试件（17) 的定位孔和传动轴（8) 的配合孔。  4. The simulated conditional rolling contact fatigue testing machine according to claim 3, wherein: at least one oil outlet (10) is arranged around the cavity of the test chamber (7), and the upper part of the cavity is placed on the test piece. At the end, the bottom has the positioning hole of the lower test piece (17) and the matching hole of the drive shaft (8).
5.如权利要求 4所述的工况模拟滚动接触疲劳试验机， 其特征于： 所 说的温度控制腔（5)腔体周围加工一个出油孔（6)和一个放置噪声传感 器的通孔， 移动式加热器（41)安装在温度控制腔（5)腔体的外部； 腔体 上部为试件装入端， 下部为传动轴（8)配合孔， 并在孔内表面加工有密封 槽。 5. The simulated conditional rolling contact fatigue testing machine according to claim 4, wherein: an oil outlet (6) and a noise sensing sensor are formed around the cavity of the temperature control chamber (5). The through hole of the device, the mobile heater (41) is installed outside the cavity of the temperature control chamber (5); the upper part of the cavity is the loading end of the test piece, and the lower part is the matching hole of the drive shaft (8), and the inner surface of the hole It is machined with a sealing groove.
6. 如权利要求 1至 5任一项所述的工况模拟滚动接触疲劳试验机， 其 特征在于： 所述驱动装置包括变频电机（21) , 所述变频电机（21) 固定 在机座 (1)的侧面上， 变频电机 (21)通过大皮带轮 (20)、 皮带 (19) 与传动轴（8)上所设的小皮带轮（4)传动连接。  The working condition simulation rolling contact fatigue testing machine according to any one of claims 1 to 5, wherein: the driving device comprises a variable frequency motor (21), and the variable frequency motor (21) is fixed at the base ( On the side of 1), the variable frequency motor (21) is connected to the small pulley (4) provided on the transmission shaft (8) through the large pulley (20) and the belt (19).
7. 如权利要求 6所述的工况模拟滚动接触疲劳试验机， 其特征在于： 所述油品分析与润滑装置由流量计（22)、 管道（23, 24)、 润滑泵站（25) 和油品分析仪（26)构成， 润滑泵站（25)通过管道（23、 24) 、 压力块 (13, 40)的进油孔（12)、 急停凸轮（11)的进油孔与试驗腔 (7)相连 通； 温度控制腔（5)的出油孔（6)通过管道（27)和油品分析仪 (26) 与润滑泵站（25)相连通。  7. The condition simulation rolling contact fatigue testing machine according to claim 6, wherein: the oil analysis and lubrication device comprises a flow meter (22), a pipe (23, 24), and a lubrication pump station (25). It is composed of an oil analyzer (26), and the lubrication pump station (25) passes through the pipeline (23, 24), the oil inlet hole (12) of the pressure block (13, 40), and the oil inlet hole of the emergency stop cam (11). The test chamber (7) is connected; the oil outlet (6) of the temperature control chamber (5) is connected to the lubrication pump station (25) through a pipe (27) and an oil analyzer (26).
8. 如权利要求 7所述的工况模拟滚动接触疲劳试验机， 其特征在于： 所述加载装置为牡杆加载装置， 其包括前述压力块（13)、 加载杠杆 (33) 与砝码加载机构（35) , 加载杠杆 (33)一端与支架（28)铰链连接， 另 一端安装砝码加载机构 (35) ,加载杠杆 ( 33 )下部装有前述压力块（ 13 )。  8. The simulated conditional rolling contact fatigue testing machine according to claim 7, wherein: said loading device is a ram loading device comprising said pressure block (13), loading lever (33) and weight loading The mechanism (35), one end of the loading lever (33) is hingedly connected to the bracket (28), the other end is mounted with a weight loading mechanism (35), and the lower part of the loading lever (33) is provided with the aforementioned pressure block (13).
9. 如权利要求 8所述的工况模拟滚动接触疲劳试验机， 其特征在于： 所述信号采集装置包括扭矩传感器（2)、 温度传感器（32)、 速度传感器 (18) 、 加速度传感器（34) 、 噪声传感器（30)、 数据转接卡和计算机， 扭矩传感器（2)安装在扭矩传动轴（3) 的下端 ， 扭矩传动轴（3)通过 轴承座固定在支架（28)上， 扭矩传动轴（3)上端安装齿轮（29)和摩擦 离合器（9) ， 齿轮（29)与急停凸轮（11)的外圆周的齿形相啮合； 温度 传感器（ 32 )放置在急停凸轮（ 11 ) 圆柱凸轮外凹槽内； 温度控制腔（ 5 ) 一侧孔内放置噪声传感器（30)； 加速度传感器（34)安装在加载杠杆（33) 加载端的上部； 加载 杆（33)进油孔处侧面固定接触开关（31) , 急停 凸轮 11上表面圆柱凸轮与接触开关（ 31 )触点接触； 以上各路信号通过转 接卡传到计算机进行处理。 9. The condition simulation rolling contact fatigue testing machine according to claim 8, wherein: the signal collecting device comprises a torque sensor (2), a temperature sensor (32), a speed sensor (18), and an acceleration sensor (34). ), noise sensor (30), data riser card and computer, torque sensor (2) is installed at the lower end of the torque transmission shaft (3), torque transmission shaft (3) is fixed to the bracket (28) through the bearing housing, torque transmission The upper end of the shaft (3) is equipped with a gear (29) and a friction clutch (9), the gear (29) meshes with the tooth profile of the outer circumference of the emergency stop cam (11); the temperature sensor (32) is placed at the emergency stop cam (11) cylinder Inside the cam outer groove; temperature control chamber (5) a noise sensor (30) is placed in one side of the hole; the acceleration sensor (34) is mounted on the loading lever (33) The upper part of the loading end; the side of the loading rod (33) at the oil inlet hole is fixed to the contact switch (31), and the cylindrical cam on the upper surface of the emergency stop cam 11 is in contact with the contact switch (31); the above signals are transmitted to the computer through the adapter card Process it.
10.根据权利要求 Ί所述的工况模拟滚动接触疲劳试验机，其特征在于： 所述加载装置为液压加载装置， 具体为： 在机座 (1)的机架（39)上安装 液压缸（36) , 液压缸（36)活塞杆上安装液压加压块（40) ， 急停凸轮 (11)的上端面装有轴承（14)与液压缸（36)活塞杆的液压加压块（40) 相配合， 液压加压块（40)加工有进油通孔与急停凸轮（11)的进油孔相 连通。  10. The simulated rolling contact fatigue testing machine according to claim ,, wherein: said loading device is a hydraulic loading device, specifically: mounting a hydraulic cylinder on a frame (39) of the base (1) (36), a hydraulic pressure block (40) is mounted on the piston rod of the hydraulic cylinder (36), and a hydraulic pressure block of the piston rod of the hydraulic cylinder (36) is mounted on the upper end surface of the emergency stop cam (11) ( 40) In cooperation, the hydraulic pressure block (40) is machined with an oil inlet through hole communicating with the oil inlet hole of the emergency stop cam (11).
11.如权利要求 10所述的工况模拟滚动接触疲劳试验机，其特征在于： 所述信号采集装置包括扭矩传感器（2)、 温度传感器（32)、 速度传感器 (18) 、 加速度传感器（34)、 噪声传感器（30) 、 数据转接卡和计算机， 扭矩传感器（2)安装在扭矩传动轴（3) 的下端 ， 扭矩传动轴（3)通过 轴承座固定在支架（28)上， 扭矩传动轴.（3)上端安装齿轮（29)和摩擦 离合器（9) , 齿轮（29)与急停凸轮（11)的外圆周的齿形相嗤合； 温度 传感器（32)放置在急停凸轮（11) 圆柱凸轮夕卜凹槽内； 温度控制腔（5) 一侧孔内放置噪声传感器（30)； 加速度传感器（34)螺纹连接在急停凸 轮（11) 的圆弧平面； 液压加压块（40) 的侧面固定有接触开关（31) , 急停凸轮（11)上表面圆柱凸轮与接触开关（.31)触点接触； 以上各路信 号通过转接卡传到计算机进行处理。  11. The condition simulation rolling contact fatigue testing machine according to claim 10, wherein: said signal acquisition device comprises a torque sensor (2), a temperature sensor (32), a speed sensor (18), and an acceleration sensor (34). ), noise sensor (30), data riser card and computer, torque sensor (2) is installed at the lower end of the torque transmission shaft (3), torque transmission shaft (3) is fixed to the bracket (28) through the bearing housing, torque transmission The shaft (3) is mounted on the upper end gear (29) and the friction clutch (9), and the gear (29) is coupled with the tooth profile of the outer circumference of the emergency stop cam (11); the temperature sensor (32) is placed on the emergency stop cam (11) ) The cylindrical cam is in the groove; the temperature control chamber (5) is placed in one side of the hole with a noise sensor (30); the acceleration sensor (34) is threaded on the arc plane of the emergency stop cam (11); hydraulic pressure block ( 40) The contact switch (31) is fixed on the side, and the cylindrical cam on the upper surface of the emergency stop cam (11) is in contact with the contact switch (.31); the above signals are transmitted to the computer through the adapter card for processing.
PCT/CN2006/001584 2005-07-09 2006-07-06 Rolling contact fatigue tester for inspecting the simulated working condition WO2007006210A1 (en)

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