WO2013071805A1 - Device for measuring high and low temperature durability of sealing member - Google Patents
Device for measuring high and low temperature durability of sealing member Download PDFInfo
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- WO2013071805A1 WO2013071805A1 PCT/CN2012/083055 CN2012083055W WO2013071805A1 WO 2013071805 A1 WO2013071805 A1 WO 2013071805A1 CN 2012083055 W CN2012083055 W CN 2012083055W WO 2013071805 A1 WO2013071805 A1 WO 2013071805A1
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- low temperature
- seal
- loading
- measuring
- durability
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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
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
- G01N3/34—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by mechanical means, e.g. hammer blows
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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
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
Definitions
- the invention belongs to the technical field of material mechanical property testing, and relates to a material property testing device, in particular to a performance testing device for a sealing member. Background technique
- the fatigue durability of materials has been well known, and the durability of materials can be easily measured using conventional fatigue testing machines or durability testing machines.
- a seal commonly used in the industry since it is mainly composed of rubber and fiber, the fatigue performance is greatly affected by temperature, especially in the aerospace field, the working environment of the seal is bad, the number of loading is more, and it is more necessary. Study its durability at different temperatures.
- the traditional fatigue testing machine is mainly used to test the fatigue of metal. The loading distance is fixed and small, and the frequency is too high.
- the traditional durability testing machine also has problems such as fixed loading range, uncontrollable loading stroke, and inability to adjust temperature. It cannot be used to measure the durability of rubber seals with a certain shape at different temperatures. Summary of the invention
- the present invention provides a device for measuring the high and low temperature durability of a seal member, which can more easily and accurately measure the durability of the seal member at different ambient temperatures.
- a device for measuring the high and low temperature durability of a seal comprising: a base, a high and low temperature test chamber, a test stand, a power loading device, a pressure sensor, and a control unit, wherein a high and low temperature test chamber is placed on the base; a test stand is placed in the high and low temperature test chamber, the test stand includes a support table and a clamp fixed to the support table and used to clamp the seal; the power loading device has a loading head located in the high and low temperature test chamber, the loading head is for loading the sealing member; a pressure sensor is disposed on an end of the loading head away from the sealing member for sensing the application of the loading head to the a positive pressure on the seal; the control unit electrically connects the power loading device and the pressure sensor, respectively; wherein the control unit controls the power plus Movement of the carrier device such that the loading head repeatedly applies a predetermined displacement to the seal in a vertical direction at a predetermined number of times and
- the loading device further comprises a motor, a transmission driven by the servo motor to convert the rotation into a translational mechanism, a vertical clamp connected to the transmission at one end and connected to the loading head via a pressure sensor at the other end. .
- the loading head is a two-piece construction comprising a connector and a detachable ram, the pressure sensor being disposed at an end of the connector, the detachable ram being adapted to load the seal.
- the detachable ram can be in the form of a flat bottom ram, a wire ram or a circular ram.
- the angle between the test stand and the horizontal plane is in the range of 0 60°.
- the control unit is a microcomputer with a data processing program.
- the high and low temperature test chamber has a temperature sensor disposed in the high and low temperature test chamber and a temperature controller disposed outside the chamber.
- the invention has the following advantages: 1) the test temperature can be adjusted, and the durability of the seal at different temperatures can be measured; 2) different loading heads can be used, and different loading angles can be adjusted to simulate different work. 3) It is possible to use the microcomputer to control the loading distance and the movement law of the loading head, and the loading method is various; 4) After the end of the test, not only the sealing member but also the positive pressure-time curve generated by the microcomputer can be studied. To judge the durability of the seal.
- FIG. 1 is a schematic structural view of an apparatus for measuring high and low temperature durability of a sealing member according to a preferred embodiment of the present invention
- 2a-b are a front view and a left side view, respectively, of the loading head of the device of Fig. 1, wherein the loading head uses a flat bottom indenter;
- Figures 3a-b are a front view and a left side view, respectively, of another loading head, wherein the loading head uses a wire head;
- 4a-b are a front view and a left side view, respectively, of another loading head, wherein the loading head uses an arc indenter;
- Figure 5a-d is a schematic diagram of the loading of the test piece at different angles of the test bench relative to the horizontal plane;
- Figure 6 is a schematic illustration of the fixture of Figure 1 loading a test piece onto a test stand. In the picture:
- the device for measuring high and low temperature durability of a seal according to a preferred embodiment of the present invention, the device comprising a base 1, a high and low temperature test chamber 2, a test stand 3, a power loading device, and a pressure sensor 5 And a microcomputer 6 with a data processing program.
- the high and low temperature test chamber 2 is placed on the machine base 1, the high and low temperature test chamber 2 has a temperature sensor 21 disposed inside the box and a temperature controller 22 disposed outside the box;
- the test stand 3 is placed in the high and low temperature test chamber 1 , the test stand 3 includes a support table 31 and a clamp 32 fixed to the support table 31 and used to clamp the seal 7;
- the power loading device includes a servo motor 41, a lead screw driven by the servo motor 41 as a transmission mechanism - a nut mechanism 42, a vertical pressing block 43 fixed to the screw-nut mechanism 42 and a loading head 44 passing through the top wall of the high and low temperature test chamber 2 in the high and low temperature test chamber;
- the pressure sensor 5 is disposed in the vertical direction Between the pressing block 43 and the loading head 44, the pressure sensor 5 is mounted between the vertical pressing block 43 and the loading head 44, and the upper and lower bottom surfaces thereof are fixedly connected to the vertical pressing block 43 and the loading head 44, respectively, for sensing.
- the clamp 32 may be detachable to replace the corresponding clamp depending on the seal to be tested;
- the loading head 44 may be a two-piece construction including the connector 441 and the detachable ram 442, pressure
- the sensor 5 is disposed at the end of the connector 441, and the detachable ram 442 is used to load the seal 7, so that different operating conditions can be simulated by replacing only the detachable ram 442.
- a screw-nut mechanism is employed as the transmission mechanism in the present embodiment, a gear-and-pinion mechanism or the like may be employed as the transmission mechanism that converts the rotation into translation.
- Figures 2a through 4b show front and left side views, respectively, of three embodiments of the detachable ram 442, wherein Figures 2a-b illustrate a flat bottom ram; Figures 3a-b illustrate a line ram; 4a-b shows a circular arc indenter.
- different indenters can be selected as needed, that is, different loading heads are used to simulate the compression of the sealing member 5 by different structures in use.
- Figures 5a-d are schematic views of the loading of the test piece 7 at different angles of the test stand 3 relative to the horizontal plane.
- the test bench 3 can be adjusted to 0 to 60 from the horizontal plane.
- Fig. 6 is a schematic view showing the test piece 7 loaded on the test stand 3.
- the clamp 32 is detachably fixed to the test stand 3 by, for example, a screw.
- the clamp 32 has a C-clip, and the seal 7 is fixed above the test stand 3 by a C-clip.
- the sealing member 7 to be tested According to the sealing member 7 to be tested, the matching jig 32 and the loading head 44 are selected, the sealing member 7 is clamped on the jig 32, and then the high and low temperature test chamber 2 is adjusted.
- the temperature controller 22 adjusts the temperature inside the box to a predetermined temperature required for the test, and controls the servo motor 41 to rotate by the microcomputer 6, thereby sealing the test piece by means of the transmission mechanism 42, the vertical pressing block 43, and the loading head 44. 7 Carry out the loading test.
- the test stand can be mounted with different inclined plates as needed, so that the load head can be compared with the test.
- the parts have a certain inclination;
- different fixtures are selected according to different test piece models, and different loading heads are used to simulate different working conditions;
- the temperature inside the box is controlled by a temperature controller outside the high and low temperature test chamber Adjusting to make the test piece in a certain temperature field to measure the durability of the rubber seal at this temperature;
- Perform necessary parameter setting on the microcomputer including test piece size parameter, motion control parameter and display parameter, wherein the motion control parameter
- the loading head movement mode, the loading distance, the loading times, the control mode in the present embodiment, according to the displacement control), etc.
- the microcomputer controls the rotation of the servo motor according to the set parameter, and converts the rotation into the vertical direction by the transmission mechanism, And drive the vertical clamp and add The carrier moves up and down in a specified manner to reciprocally
- the pressure sensor loaded on the upper part of the loading head dynamically measures the positive pressure at each moment and feeds the signal back to the microcomputer; the microcomputer measures the pressure sensor
- the signal is processed to obtain a positive pressure at any time, and a real-time curve of positive pressure-time at a certain temperature is generated and displayed on the screen; in this process, the microcomputer reads relevant data from the set parameters to judge the current state. Whether the preset parameters are satisfied, such as loading distance (ie loading displacement), loading times, loading frequency/loading period, loading temperature, if not, sending a signal to the servo motor to control the servo motor to continue to rotate.
- the positive pressure-time curve at a certain temperature generated above can reflect the maximum loading force and the compression time in each cycle, thereby reflecting the durability of the seal.
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Abstract
A device for measuring high and low temperature durability of sealing member, which mainly comprises a main machine base (1), a high and low temperature testing box (2), a loading device, a test table (3), a pressure sensor (5) and a microcomputer (6) with a data processor. A servo motor (41) is used to load a test piece through a transmission mechanism (42), a vertical press block (43) and a loading head (44). A loading force is measured by the pressure sensor (5) and the measuring signal is fed back to the microcomputer (6) in real time, and a result is displayed in real time. Compared with a traditional durability tester or a fatigue tester the device has a controllable testing temperature, a long loading stroke and a large loading force range. The device is suitable for measuring durability of rubber sealing parts of various types at different temperature.
Description
一种测量密封件高低温耐久性能的装置 技术领域 Device for measuring high and low temperature durability of seals
本发明属于材料力学性能测试技术领域， 涉及一种材料性能测 试设备， 特别涉及一种密封件的性能测试装置。 背景技术 The invention belongs to the technical field of material mechanical property testing, and relates to a material property testing device, in particular to a performance testing device for a sealing member. Background technique
材料的疲劳耐久性能已经被人们熟知， 利用传统的疲劳试验机 或耐久性试验机很容易测得材料的耐久性能。 但作为工业中常用的 密封件， 由于其主要由橡胶和纤维复合而成， 疲劳性能受温度影响 很大， 特别是在航空航天领域中， 密封件工作环境恶劣， 加载的次 数多， 更加有必要研究其在不同温度下的耐久性能。 而传统的疲劳 试验机主要用来测试金属的疲劳， 加载距离固定且较小， 频率过高； 而传统的耐久性试验机也存在着加载力范围固定、 加载行程不可控、 无法调节温度等问题， 不能用来测量不同温度下、 具有一定形状的 橡胶密封件的耐久性能。 发明内容 The fatigue durability of materials has been well known, and the durability of materials can be easily measured using conventional fatigue testing machines or durability testing machines. However, as a seal commonly used in the industry, since it is mainly composed of rubber and fiber, the fatigue performance is greatly affected by temperature, especially in the aerospace field, the working environment of the seal is bad, the number of loading is more, and it is more necessary. Study its durability at different temperatures. The traditional fatigue testing machine is mainly used to test the fatigue of metal. The loading distance is fixed and small, and the frequency is too high. However, the traditional durability testing machine also has problems such as fixed loading range, uncontrollable loading stroke, and inability to adjust temperature. It cannot be used to measure the durability of rubber seals with a certain shape at different temperatures. Summary of the invention
因此， 本发明提供一种测量密封件高低温耐久性能的装置， 其 能够更加方便、 准确地测量密封件在不同环境温度下的耐久性能。 Accordingly, the present invention provides a device for measuring the high and low temperature durability of a seal member, which can more easily and accurately measure the durability of the seal member at different ambient temperatures.
为此， 根据本发明的一个方面， 提供一种测量密封件高低温耐 久性能的装置， 谅装置包括： 机座、 高低温试验箱、 测试台、 动力 加载装置、 压力传感器以及控制单元， 其中， 高低温试验箱置于所 述机座上； 测试台置于所述高低温试验箱内， 所述测试台包括支撑 台和固定于支撑台上并用来夹持密封件的夹具； 动力加载装置具有 位于高低温试验箱内的加载头， 所述加载头用来向所述密封件加载； 压力传感器设置在所述加载头上远离所述密封件的一端用来感测所 述加载头施加到所述密封件上的正压力； 控制单元分别电连接所述 动力加载装置和所述压力传感器； 其中， 所述控制单元控制动力加
载装置的运动从而使得所述加载头沿竖直方向以预定次数和预定频 率反复向密封件加载预定位移； 所述压力传感器将所述正压力信号 传送至所述控制单元； 所述控制单元根据其所接收到的正压力信号 动态生成反映密封件耐久性能的正压力 -时间曲线。 To this end, according to an aspect of the present invention, there is provided a device for measuring the high and low temperature durability of a seal, the device comprising: a base, a high and low temperature test chamber, a test stand, a power loading device, a pressure sensor, and a control unit, wherein a high and low temperature test chamber is placed on the base; a test stand is placed in the high and low temperature test chamber, the test stand includes a support table and a clamp fixed to the support table and used to clamp the seal; the power loading device has a loading head located in the high and low temperature test chamber, the loading head is for loading the sealing member; a pressure sensor is disposed on an end of the loading head away from the sealing member for sensing the application of the loading head to the a positive pressure on the seal; the control unit electrically connects the power loading device and the pressure sensor, respectively; wherein the control unit controls the power plus Movement of the carrier device such that the loading head repeatedly applies a predetermined displacement to the seal in a vertical direction at a predetermined number of times and a predetermined frequency; the pressure sensor transmits the positive pressure signal to the control unit; The positive pressure signal it receives dynamically generates a positive pressure-time curve that reflects the durability of the seal.
优选地， 加载装置还包括 ^服电机、 由伺服电机驱动从而将转 动转化为平动的传动机构、 一端与传动机构相连接而另一端经由压 力传感器与所述加载头相连接的竖直压块。 Preferably, the loading device further comprises a motor, a transmission driven by the servo motor to convert the rotation into a translational mechanism, a vertical clamp connected to the transmission at one end and connected to the loading head via a pressure sensor at the other end. .
再优选地， 加载头为包括连接件和可拆卸压头的两件式结构， 所述压力传感器设置在所述连接件的末端， 所述可拆卸压头用来向 所述密封件加载。 Still preferably, the loading head is a two-piece construction comprising a connector and a detachable ram, the pressure sensor being disposed at an end of the connector, the detachable ram being adapted to load the seal.
进一步优选地， 可拆卸压头可釆用平底压头、 线压头或圆弧压 头的形式。 Further preferably, the detachable ram can be in the form of a flat bottom ram, a wire ram or a circular ram.
又进一步优选地， 测试台与水平面的夹角在 0 60° 的范围内。 再优选地， 控制单元为带有数据处理程序的微机。 Still further preferably, the angle between the test stand and the horizontal plane is in the range of 0 60°. Still preferably, the control unit is a microcomputer with a data processing program.
进一步优选地， 高低温试驗箱具有设置在高低温试验箱箱体内 的温度传感器和设置在箱体外的温度控制器。 Further preferably, the high and low temperature test chamber has a temperature sensor disposed in the high and low temperature test chamber and a temperature controller disposed outside the chamber.
本发明与现有技术相比， 具有以下优点： 1 )能够调节测试温度， 测量不同温度下密封件的耐久性能； 2 ) 能够采用不同的加载头， 并 调节不同加载角度， 来模拟不同的工况； 3 ) 能够利用微机对加载的 距离、 加载头的运动规律进行控制， 加载的方式多样； 4 )在试验结 束后不仅可以肉眼观察密封件而且还可以通过研究微机生成的正压 力 -时间曲线来判断密封件的耐久性能。 Compared with the prior art, the invention has the following advantages: 1) the test temperature can be adjusted, and the durability of the seal at different temperatures can be measured; 2) different loading heads can be used, and different loading angles can be adjusted to simulate different work. 3) It is possible to use the microcomputer to control the loading distance and the movement law of the loading head, and the loading method is various; 4) After the end of the test, not only the sealing member but also the positive pressure-time curve generated by the microcomputer can be studied. To judge the durability of the seal.
通过参考下面所描述的实施方式， 本发明的这些方面和其他方 面将会得到清晰地阐述。 附图说明 These and other aspects of the present invention will be apparent from and elucidated with reference to the embodiments described herein. DRAWINGS
本发明的结构和操作方式以及进一步的目的和优点将通过下面 结合附图的描述得到更好地理解， 其中， 相同的参考标记标识相同 的元件：
图 1 是根据本发明的一优选实施方式的测量密封件高低温耐久 性能的装置的结构示意图； The structure and operation of the present invention as well as further objects and advantages will be better understood from the following description in conjunction with the accompanying drawings in which 1 is a schematic structural view of an apparatus for measuring high and low temperature durability of a sealing member according to a preferred embodiment of the present invention;
图 2a- b分别是图 1所示装置的加载头的主视图和左视图， 其中 加载头使用的是平底压头； 2a-b are a front view and a left side view, respectively, of the loading head of the device of Fig. 1, wherein the loading head uses a flat bottom indenter;
图 3a-b分别是另一种加载头的主视图和左视图， 其中加载头使 用的是线压头； Figures 3a-b are a front view and a left side view, respectively, of another loading head, wherein the loading head uses a wire head;
图 4a-b分别是又一种加载头的主视图和左视图， 其中加载头使 用的是圓弧压头； 4a-b are a front view and a left side view, respectively, of another loading head, wherein the loading head uses an arc indenter;
图 5a-d 是测试台相对水平面处于不同角度下的试件加载示意 图； Figure 5a-d is a schematic diagram of the loading of the test piece at different angles of the test bench relative to the horizontal plane;
图 6是图 1所示的装置中夹具将试件装载在测试台上的示意图。 图中： Figure 6 is a schematic illustration of the fixture of Figure 1 loading a test piece onto a test stand. In the picture:
1-机座 1-frame
2-高低温试验箱 2-high and low temperature test chamber
21-温度传感器 21-temperature sensor
22-温度控制器 22-temperature controller
3-测试台 3-test bench
31-支撑台 31-support table
32-夹具 32-clamp
41-祠服电机 41-祠服电机
42-丝杠-螺母机构 42-screw-nut mechanism
43-竖直压块 43-vertical block
44-加载头 44-loading head
441-连接件 441-connector
442-可拆卸压头 442-detachable indenter
5-压力传感器 5-pressure sensor
6-微机 6-microcomputer
7-试件
具体实施方式 7-Test piece detailed description
根据要求， 这里将披露本发明的具体实施方式。 然而， 应当理 解的是， 这里所披露的实施例仅仅是本发明的典型例子而已， 其可 体现为各种形式。 因此， 这里披露的具体细节不被认为是限制性的， 而仅仅是作为权利要求的基础以及作为用于教导本领域技术人员以 用这里所披露的各种特征并结合这里可能没有明确披露的特征。 Specific embodiments of the invention are disclosed herein as required. However, it should be understood that the embodiments disclosed herein are merely exemplary of the invention and may be embodied in various forms. Therefore, the specific details disclosed herein are not to be considered in a limiting .
图 1 示出了根据本发明的一优选实施方式的一种测量密封件高 低温耐久性能的装置， 该装置包括机座 1、 高低温试验箱 2、 测试台 3、 动力加载装置、 压力传感器 5和带有数据处理程序的微机 6。 其 中， 高低温试验箱 2放置在机座 1上， 该高低温试验箱 2具有设置 在箱体内的温度传感器 21和设置在箱体外的温度控制器 22;测试台 3置于高低温试验箱 1内， 该测试台 3包括支撑台 31和固定于支撑 台 31上并用来夹持密封件 7的夹具 32;动力加载装置包括伺服电机 41、 由伺服电机 41驱动的作为传动机构的丝杠 -螺母机构 42、 与丝 杠-螺母机构 42固连的竖直压块 43和穿过高低温试^ ^箱 2的顶壁位 于高低温试验箱内的加载头 44; 压力传感器 5 设置在竖直压块 43 和加载头 44之间，压力传感器 5装在竖直压块 43和加载头 44之间， 其上、 下底面分别与竖直压块 43和加载头 44 固连， 用来感测加载 头 44施加到密封件 7上的正压力； 所述的带有数据处理程序的微机 8分別通过控制线路和数据线路与伺服电机 41和压力传感器 5电连 接。 1 shows a device for measuring high and low temperature durability of a seal according to a preferred embodiment of the present invention, the device comprising a base 1, a high and low temperature test chamber 2, a test stand 3, a power loading device, and a pressure sensor 5 And a microcomputer 6 with a data processing program. Wherein, the high and low temperature test chamber 2 is placed on the machine base 1, the high and low temperature test chamber 2 has a temperature sensor 21 disposed inside the box and a temperature controller 22 disposed outside the box; the test stand 3 is placed in the high and low temperature test chamber 1 , the test stand 3 includes a support table 31 and a clamp 32 fixed to the support table 31 and used to clamp the seal 7; the power loading device includes a servo motor 41, a lead screw driven by the servo motor 41 as a transmission mechanism - a nut mechanism 42, a vertical pressing block 43 fixed to the screw-nut mechanism 42 and a loading head 44 passing through the top wall of the high and low temperature test chamber 2 in the high and low temperature test chamber; the pressure sensor 5 is disposed in the vertical direction Between the pressing block 43 and the loading head 44, the pressure sensor 5 is mounted between the vertical pressing block 43 and the loading head 44, and the upper and lower bottom surfaces thereof are fixedly connected to the vertical pressing block 43 and the loading head 44, respectively, for sensing. The positive pressure applied to the sealing member 7 by the loading head 44; the microcomputer 8 with the data processing program is electrically connected to the servo motor 41 and the pressure sensor 5 through control lines and data lines, respectively.
应当理解的是， 夹具 32可以是可拆卸的， 以便根据所要测试的 密封件的不同而更换相应的夹具； 加载头 44可为两件式结构， 包括 连接件 441和可拆卸压头 442,压力传感器 5设置在连接件 441的末 端， 而可拆卸压头 442用来向密封件 7加载， 从而可通过仅更换可 拆卸压头 442 来模拟不同的工况。 另外， 尽管在本实施方式中采用 丝杠 -螺母机构作为传动机构，但也可以采用齿轮 -齿条机构或其他类 似可将转动转化为平动的机构作为传动机构。
图 2a到图 4b分別示出了可拆卸压头 442的三种实施方式的主 视图和左视图， 其中， 图 2a-b示出了平底压头； 图 3a-b示出了线压 头； 而图 4a-b示出了圓弧压头。 实践中， 可根据需要选用不同的压 头， 即选用不同的加载头来模拟使用中不同结构对密封件 5的压缩。 It should be understood that the clamp 32 may be detachable to replace the corresponding clamp depending on the seal to be tested; the loading head 44 may be a two-piece construction including the connector 441 and the detachable ram 442, pressure The sensor 5 is disposed at the end of the connector 441, and the detachable ram 442 is used to load the seal 7, so that different operating conditions can be simulated by replacing only the detachable ram 442. In addition, although a screw-nut mechanism is employed as the transmission mechanism in the present embodiment, a gear-and-pinion mechanism or the like may be employed as the transmission mechanism that converts the rotation into translation. Figures 2a through 4b show front and left side views, respectively, of three embodiments of the detachable ram 442, wherein Figures 2a-b illustrate a flat bottom ram; Figures 3a-b illustrate a line ram; 4a-b shows a circular arc indenter. In practice, different indenters can be selected as needed, that is, different loading heads are used to simulate the compression of the sealing member 5 by different structures in use.
图 5a-d是测试台 3相对水平面处于不同角度下对试件 7加载的 示意图。 试验时， 可以调节测试台 3与水平面呈 0 ~ 60。 角度， 从而 使得加载头 44相对于试件 7呈 0 60° 倾角， 用于模拟使用中装配 偏差或其他特殊装夹方式时密封件 7倾斜加载的情况， 即： 可通过 调节不同加载角度， 来模拟不同的工况。 Figures 5a-d are schematic views of the loading of the test piece 7 at different angles of the test stand 3 relative to the horizontal plane. During the test, the test bench 3 can be adjusted to 0 to 60 from the horizontal plane. The angle, so that the loading head 44 is inclined at 0 60° with respect to the test piece 7, and is used to simulate the tilting of the sealing member 7 when the assembly deviation or other special clamping method is used in use, that is, by adjusting different loading angles, Simulate different conditions.
图 6是试件 7装载在测试台 3上的示意图。 如图所示， 夹具 32 通过例如螺丝可拆卸地固定在测试台 3上， 在该实施方式中夹具 32 具有 C型夹， 通过 C型夹将密封件 7固定在测试台 3上方。 Fig. 6 is a schematic view showing the test piece 7 loaded on the test stand 3. As shown, the clamp 32 is detachably fixed to the test stand 3 by, for example, a screw. In this embodiment, the clamp 32 has a C-clip, and the seal 7 is fixed above the test stand 3 by a C-clip.
下面说一说本实施方式的装置的工作过程： 根据所要试验的密 封件 7选择相适应的夹具 32和加载头 44, 将密封件 7装夹在夹具 32上，然后通过调节高低温试验箱 2的温度控制器 22将箱内温度调 到试验所需要的预定温度， 通过微机 6控制伺服电机 41转动， 从而 借助于传动机构 42、 竖直压块 43 以及加载头 44对作为试件的密封 件 7进行加载试验。 The working process of the device of the present embodiment will be described below: According to the sealing member 7 to be tested, the matching jig 32 and the loading head 44 are selected, the sealing member 7 is clamped on the jig 32, and then the high and low temperature test chamber 2 is adjusted. The temperature controller 22 adjusts the temperature inside the box to a predetermined temperature required for the test, and controls the servo motor 41 to rotate by the microcomputer 6, thereby sealing the test piece by means of the transmission mechanism 42, the vertical pressing block 43, and the loading head 44. 7 Carry out the loading test.
下面介绍一下利用上述实施方式中测量橡胶密封件的耐久性能 的装置进行测试的工作过程， 具体步骤如下： 首先， 可根据需要对 测试台装上不同的倾角板， 从而可使加载头相对于试件有一定的倾 角； 接着， 根据不同的试件型号选用不同的夹具装夹， 并选用不同 的加载头模拟不同的工作状况； 然后， 通过高低温试验箱外部的温 度控制器对箱内的温度进行调节， 使试件处于一定的温度场中， 以 测量该温度下橡胶密封件的耐久性能； 对微机进行必要的参数设置， 包括试件尺寸参数、 运动控制参数和显示参数， 其中运动控制参数 又包括加载头运动方式、 加载距离、 加载次数、 控制方式 （在本实 施方式中按位移控制） 等； 微机根据设定参数控制伺服电机转动， 通过传动机构将转动转化为竖直方向的运动， 并带动竖直压块和加
载头按指定的方式上下运动， 对密封件往复加载； 在加载过程中， 装载在加载头上部的压力传感器动态测量各时刻的正压力， 并将信 号反馈给微机； 微机对压力传感器测得的信号进行处理， 得到任意 时刻的正压力， 并生成在某一温度下的正压力-时间的实时曲线显示 在屏幕上； 在此过程中， 微机从设置的参数中读取相关数据， 判断 当前状态是否满足预先设置的参数， 比如加载距离 （即加载位移） 、 加载次数、 加载频率 /加载周期、 加载温度， 如果不满足， 则对伺服 电机发送信号， 控制伺服电机继续转动。 应当理解的是， 上述生成 的某一温度下的正压力-时间曲线能够反映出最大加载力以及每一周 期内的压缩时间， 从而反映出密封件的耐久性能。 The following describes the working process of the device for measuring the durability of the rubber seal in the above embodiment. The specific steps are as follows: First, the test stand can be mounted with different inclined plates as needed, so that the load head can be compared with the test. The parts have a certain inclination; Next, different fixtures are selected according to different test piece models, and different loading heads are used to simulate different working conditions; then, the temperature inside the box is controlled by a temperature controller outside the high and low temperature test chamber Adjusting to make the test piece in a certain temperature field to measure the durability of the rubber seal at this temperature; Perform necessary parameter setting on the microcomputer, including test piece size parameter, motion control parameter and display parameter, wherein the motion control parameter In addition, the loading head movement mode, the loading distance, the loading times, the control mode (in the present embodiment, according to the displacement control), etc.; the microcomputer controls the rotation of the servo motor according to the set parameter, and converts the rotation into the vertical direction by the transmission mechanism, And drive the vertical clamp and add The carrier moves up and down in a specified manner to reciprocally load the seal. During the loading process, the pressure sensor loaded on the upper part of the loading head dynamically measures the positive pressure at each moment and feeds the signal back to the microcomputer; the microcomputer measures the pressure sensor The signal is processed to obtain a positive pressure at any time, and a real-time curve of positive pressure-time at a certain temperature is generated and displayed on the screen; in this process, the microcomputer reads relevant data from the set parameters to judge the current state. Whether the preset parameters are satisfied, such as loading distance (ie loading displacement), loading times, loading frequency/loading period, loading temperature, if not, sending a signal to the servo motor to control the servo motor to continue to rotate. It should be understood that the positive pressure-time curve at a certain temperature generated above can reflect the maximum loading force and the compression time in each cycle, thereby reflecting the durability of the seal.
本发明的技术内容及技术特点已揭示如上， 然而可以理解， 在 本发明的创作思想下， 本领域的技术人员可以对上述结构和材料作 各种变化和改进， 包括这里单独披露或要求保护的技术特征的组合， 明显地包括这些特征的其它组合。 这些变形和 /或组合均落入本发明 所涉及的技术领域内， 并落入本发明权利要求的保护范围。 需要注 意的是， 按照惯例， 权利要求中使用单个元件意在包括一个或多个 这样的元件。 此外， 不应该将权利要求书中的任何参考标记构造为 限制本发明的范围。
The technical contents and technical features of the present invention have been disclosed above, but it will be understood that those skilled in the art can make various changes and modifications to the above structures and materials, including separately disclosed or claimed herein. Combinations of technical features, obviously including other combinations of these features. These variations and/or combinations are all within the technical scope of the present invention and fall within the scope of the claims of the present invention. It is to be noted that the use of a single element in the claims is intended to include one or more of such elements. In addition, any reference signs in the claims should not be construed as limiting the scope of the invention.
Claims
1. 一种测量密封件高低温耐久性能的装置， 包括： 1. A device for measuring the high and low temperature durability of a seal, comprising:
机座； Machine base;
高低温试验箱， 其置于所述机座上； a high and low temperature test chamber placed on the base;
测试台， 其置于所述高低温试验箱内， 所述测试台包括支撑台和 固定于支撑台上并用来夹持密封件的夹具； a test stand, which is placed in the high and low temperature test chamber, the test stand includes a support table and a clamp fixed to the support table and used to clamp the seal;
动力加载装置， 其具有位于高低温试验箱内的加载头， 所述加载 头用来向所述密封件加载； a power loading device having a loading head located in a high and low temperature test chamber, the loading head being used to load the seal;
压力传感器， 其设置在所述加载头上远离所述密封件的一端， 所 述压力传感器用来感测所述加载头施加到所述密封件上的正压力； 控制单元， 其分别与所述动力加载装置和所述压力传感器电连 接； 其中， a pressure sensor disposed at an end of the loading head away from the seal, the pressure sensor for sensing a positive pressure applied by the loading head to the seal; a control unit, respectively a power loading device and the pressure sensor are electrically connected; wherein
所述控制单元控制动力加载装置的运动从而使得所述加载头沿 竖直方向以预定次数和预定频率反复向密封件加载预定位移； The control unit controls movement of the power loading device such that the loading head repeatedly loads a predetermined displacement to the seal in a vertical direction by a predetermined number of times and a predetermined frequency;
所述压力传感器将所述正压力信号传送至所述控制单元； 所述控制单元根据其所接收到的正压力信号动态生成反映密封 件耐久性能的正压力 -时间曲线。 The pressure sensor transmits the positive pressure signal to the control unit; the control unit dynamically generates a positive pressure-time curve reflecting the durability of the seal based on the positive pressure signal it receives.
2. 如权利要求 1所述的测量密封件高低温耐久性能的装置， 其 特征在于， 所述加载装置还包括伺服电机、 由伺服电机驱动从而将 转动转化为平动的传动机构、 一端与传动机构相连接而另一端经由 压力传感器与所述加载头相连接的竖直压块。 2. The apparatus for measuring high and low temperature durability of a seal according to claim 1, wherein the loading device further comprises a servo motor, a transmission mechanism driven by the servo motor to convert the rotation into a translational motion, one end and a transmission. A vertical compact connected to the loading head by a pressure sensor at the other end.
3. 如权利要求 2所述的测量密封件高低温耐久性能的装置， 其 特征在于， 所述可拆卸加载头为包括连接件和可拆卸压头的两件式 结构， 所述压力传感器设置在所述连接件的末端， 所述可拆卸压头 用来向所述密封件加载。 3. The apparatus for measuring high and low temperature durability of a seal according to claim 2, wherein the detachable loading head is a two-piece structure including a connecting member and a detachable ram, wherein the pressure sensor is disposed at At the end of the connector, the detachable ram is used to load the seal.
4. 如权利要求 3所述的测量密封件高低温耐久性能的装置， 其 特征在于， 所述可拆卸压头采用平底压头、 线压头或圓弧压头的形 式。 4. The apparatus for measuring the high and low temperature durability of a seal according to claim 3, wherein the detachable ram is in the form of a flat bottom ram, a wire ram or a circular ram.
5. 如权利要求 4所述的测量密封件高低温耐久性能的装置， 其 特征在于， 所述压力传感器的上、 下表面分别与所述竖直压块和所 述加载头的连接件固定连接。 5. The apparatus for measuring high and low temperature durability of a seal according to claim 4, wherein the upper and lower surfaces of the pressure sensor are fixedly connected to the connecting members of the vertical clamp and the loading head, respectively. .
6. 如权利要求 1-5任一所述的测量密封件高低温耐久性能的装 置， 其特征在于， 所述测试台与水平面的夹角在 0 ~ 60° 的范围内。 The apparatus for measuring high and low temperature durability of a seal according to any one of claims 1 to 5, wherein the angle between the test stand and the horizontal plane is in the range of 0 to 60°.
7. 如权利要求 6所述的测量密封件高低温耐久性能的装置， 其 特征在于， 所述传动机构采用丝杠-螺母机构或齿轮 -齿条机构。 7. The apparatus for measuring the high and low temperature durability of a seal according to claim 6, wherein the transmission mechanism employs a screw-nut mechanism or a gear-and-pinion mechanism.
8. 如权利要求 1 所述的测量密封件高低温耐久性能的装置， 其 特征在于， 所述控制单元为带有数据处理程序的微机。 8. The apparatus for measuring high and low temperature durability of a seal according to claim 1, wherein the control unit is a microcomputer with a data processing program.
9. 如权利要求 8所述的测量密封件高低温耐久性能的装置， 其 特征在于， 所述高低温试验箱具有设置在高低温试驗箱箱体内的温 度传感器和设置在箱体外的温度控制器。 9. The apparatus for measuring high and low temperature durability of a seal according to claim 8, wherein the high and low temperature test chamber has a temperature sensor disposed in the high and low temperature test chamber and a temperature disposed outside the chamber Controller.
10. 如权利要求 9所述的测量密封件高低温耐久性能的装置， 其 特征在于， 所述密封件为橡胶密封件。 10. The apparatus for measuring high and low temperature durability of a seal according to claim 9, wherein the seal is a rubber seal.
11. 如权利要求 1-9任一项所述的测量密封件高低温耐久性能的 装置， 其特征在于， 所述夹具是可拆卸的。 11. Apparatus for measuring the high and low temperature durability of a seal according to any of claims 1-9, wherein the clamp is detachable.
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| CN201110361736.8 | 2011-11-15 | ||
| CN201110361736.8A CN102539257B (en) | 2011-11-15 | 2011-11-15 | Device for measuring high temperature and low temperature resistance of sealing parts |
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| JP2005127737A (en) * | 2003-10-21 | 2005-05-19 | Yokohama Rubber Co Ltd:The | Endurance test method of laminated body of resin film and rubber |
| CN2869846Y (en) * | 2006-02-28 | 2007-02-14 | 施晖 | Foam repeated pressed-fatigue performance detector |
| CN101324497A (en) * | 2008-07-08 | 2008-12-17 | 奇瑞汽车股份有限公司 | Flexible plate assembly axial fatigue test method |
| CN102539257A (en) * | 2011-11-15 | 2012-07-04 | 中国商用飞机有限责任公司 | Device for measuring high temperature and low temperature resistance of sealing parts |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103837420A (en) * | 2014-03-14 | 2014-06-04 | 唐山轨道客车有限责任公司 | Pulse fatigue testing machine and fatigue testing device used by same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102539257A (en) | 2012-07-04 |
| CN102539257B (en) | 2015-07-08 |
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