CN103293071B - Tension-torsion combined fatigue testing device - Google Patents
Tension-torsion combined fatigue testing device Download PDFInfo
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- CN103293071B CN103293071B CN201310252562.0A CN201310252562A CN103293071B CN 103293071 B CN103293071 B CN 103293071B CN 201310252562 A CN201310252562 A CN 201310252562A CN 103293071 B CN103293071 B CN 103293071B
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- 238000009661 fatigue test Methods 0.000 title claims abstract description 33
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- 239000002131 composite material Substances 0.000 claims description 11
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- 238000012360 testing method Methods 0.000 description 4
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Abstract
一种拉-扭复合疲劳试验装置，包括套筒，凸耳，导向柱，螺旋转轴，下支承板，下支承总成，扭矩传感器以及挡板，所述套筒上端通过固定螺钉与上夹头相连；套筒下端与螺旋转轴联接；螺旋转轴下端通过螺钉与下支承总成相接；下支承板与下支承总成之间通过紧固件与下支承总成联接；在下支承板下面安装有第一挡板，在下支承总成的下端两侧安装有第二挡板，扭矩传感器通过螺钉分别纵向安装在下支承总成和下连接头之间，并用紧固螺母在轴向与下支承总成联接，在套筒的凸耳和下支承板的凸耳之间有一可以上下移动的导向柱。采用本发明能够保证装置在拉伸的过程中，同时实现扭转动作，并且结构简单，易于操作与控制。
A tension-torsion compound fatigue test device, comprising a sleeve, lugs, guide columns, a helical shaft, a lower support plate, a lower support assembly, a torque sensor and a baffle, the upper end of the sleeve is connected to the upper clamp by a fixing screw connected; the lower end of the sleeve is connected with the screw shaft; the lower end of the screw shaft is connected with the lower support assembly through screws; the lower support plate and the lower support assembly are connected with the lower support assembly through fasteners; The first baffle, the second baffle is installed on both sides of the lower end of the lower support assembly, the torque sensor is installed longitudinally between the lower support assembly and the lower connector through screws, and the fastening nut is used to connect the lower support assembly in the axial direction To connect, there is a guide column that can move up and down between the lug of the sleeve and the lug of the lower support plate. Adopting the invention can ensure that the device realizes twisting action simultaneously during the stretching process, and has a simple structure and is easy to operate and control.
Description
技术领域technical field
本发明涉及一种疲劳试验机，具体是一种拉-扭复合疲劳试验装置。The invention relates to a fatigue testing machine, in particular to a pull-torsion compound fatigue testing device.
背景技术Background technique
目前，大多数疲劳试验均是在单轴疲劳试验机上完成，单轴疲劳试验机具有结构简单，价格便宜，有雄厚的单轴疲劳强度理论背景，对完成一定条件下的疲劳试验有重要的帮助。但是，大多数机械零部件在实际工作中往往处于复杂的应力-应变状态，而单轴疲劳试验过程中只是使试件处于单向拉压状态。因此，研究多轴疲劳试验就显得极为迫切。At present, most of the fatigue tests are done on the uniaxial fatigue testing machine. The uniaxial fatigue testing machine has a simple structure, low price, and a strong theoretical background of uniaxial fatigue strength, which is of great help to the completion of the fatigue test under certain conditions. . However, most mechanical parts are often in a complex stress-strain state in actual work, and the uniaxial fatigue test only makes the specimen in a unidirectional tension and compression state. Therefore, it is extremely urgent to study the multiaxial fatigue test.
多轴疲劳试验最常见的就是拉-扭复合疲劳试验，该试验是在拉-扭复合疲劳试验机上进行，它有拉伸和扭转两个独立的作动器来实现拉-扭复合动作。目前，拉-扭复合疲劳试验机有MTS809-250kN,拉扭电液伺服材料试验机、Instron拉扭双轴落地式电子万能材料试验机，长春试验机研究所的ZSLD系列电液伺服拉扭复合疲劳试验机、西安力创电液伺服拉扭疲劳试验机等，但价格昂贵，价格是单轴疲劳试验机的1.5倍。为了充分利用现有试验设备，则拟在拉伸疲劳试验机上完成拉-扭复合疲劳试验。在不改动现有拉伸疲劳试验机的条件下，如何设计一套拉-扭复合疲劳试验装置就显得极为关键。The most common multiaxial fatigue test is the pull-torsion composite fatigue test, which is carried out on a pull-torsion composite fatigue testing machine, which has two independent actuators for tension and torsion to realize the pull-torsion composite action. At present, the tension-torsion composite fatigue testing machine includes MTS809-250kN, tension-torsion electro-hydraulic servo material testing machine, Instron tension-torsion biaxial floor type electronic universal material testing machine, ZSLD series electro-hydraulic servo tension-torsion compound testing machine of Changchun Testing Machine Research Institute. Fatigue testing machine, Xi'an Lichuang electro-hydraulic servo tension and torsion fatigue testing machine, etc., but the price is expensive, and the price is 1.5 times that of the uniaxial fatigue testing machine. In order to make full use of the existing test equipment, it is planned to complete the tensile-torsional composite fatigue test on the tensile fatigue testing machine. How to design a set of tensile-torsional composite fatigue test device is extremely critical without changing the existing tensile fatigue testing machine.
发明内容Contents of the invention
本发明的目的是提供一种拉-扭复合疲劳试验装置，它能够完善拉伸疲劳试验机的功能，同时实现拉伸与扭转试验。The purpose of the present invention is to provide a tensile-torsion composite fatigue test device, which can improve the function of the tensile fatigue testing machine and realize tensile and torsion tests simultaneously.
本发明通过以下技术方案达到上述目的：一种拉-扭复合疲劳试验装置，包括套筒，凸耳，导向柱，螺旋转轴，下支承板，下支承总成，扭矩传感器以及挡板，所述套筒上端通过固定螺钉与上夹头相连；套筒下端与螺旋转轴联接；螺旋转轴下端通过螺钉与下支承总成相接；下支承板通过紧固件与下支承总成联接；在下支承板下面安装有第一挡板，在下支承总成的下端两侧安装有第二挡板，扭矩传感器通过螺钉分别纵向安装在下支承总成和下连接头之间，并用紧固螺母在轴向与下支承总成联接，在套筒的凸耳和下支承板的凸耳之间有一可以上下移动的导向柱。The present invention achieves the above object through the following technical solutions: a pull-torsion compound fatigue test device, comprising a sleeve, a lug, a guide post, a helical shaft, a lower support plate, a lower support assembly, a torque sensor and a baffle, the The upper end of the sleeve is connected with the upper chuck through fixing screws; the lower end of the sleeve is connected with the screw shaft; the lower end of the screw shaft is connected with the lower support assembly through screws; the lower support plate is connected with the lower support assembly through fasteners; the lower support plate The first baffle plate is installed below, and the second baffle plate is installed on both sides of the lower end of the lower support assembly. The support assembly is connected, and there is a guide column that can move up and down between the lug of the sleeve and the lug of the lower support plate.
所述套筒沿轴线分成两半，并用螺栓联接。The sleeve is divided into two halves along the axis and connected by bolts.
所述套筒的下端设有四个凹部，四个凹部装有四个球滚珠。The lower end of the sleeve is provided with four recesses, and the four recesses are equipped with four balls.
本发明的的突出优点在于：The outstanding advantages of the present invention are:
在套筒的凸耳和下支承板的凸耳之间有一可以上下移动的导向柱，从而实现试样的拉伸；同时，套筒下端凹部的四个球滚珠将因套筒的垂直运动而带动螺旋转轴旋转；其结构新颖，能够保证装置在拉伸的过程中，同时实现扭转动作，并且结构简单，成本低，易于操作与控制。Between the lug of the sleeve and the lug of the lower support plate is a guide column that can move up and down, so as to realize the stretching of the sample; at the same time, the four balls in the concave part of the lower end of the sleeve will move due to the vertical movement of the sleeve. It drives the rotation of the helical shaft; its novel structure can ensure that the device can realize the torsion action during the stretching process, and the structure is simple, the cost is low, and it is easy to operate and control.
附图说明Description of drawings
图1是本发明所述的拉-扭复合疲劳试验装置的结构示意图。Fig. 1 is a schematic diagram of the structure of the tension-torsion composite fatigue test device according to the present invention.
图2是本发明所述的拉-扭复合疲劳试验装置的上部分结构图。Fig. 2 is a structural view of the upper part of the tension-torsion compound fatigue test device according to the present invention.
图3是本发明所述的拉-扭复合疲劳试验装置的上部分俯视图。Fig. 3 is a top view of the upper part of the tension-torsion compound fatigue test device according to the present invention.
图4是本发明所述的拉-扭复合疲劳试验装置的下部分结构图。Fig. 4 is a structural diagram of the lower part of the tension-torsion compound fatigue test device according to the present invention.
图5是本发明所述的拉-扭复合疲劳试验装置的仰视图。Fig. 5 is a bottom view of the tension-torsion composite fatigue test device according to the present invention.
具体实施方式Detailed ways
下面结合附图和实施例对本发明的技术方案做进一步描述。The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.
本发明所述的拉-扭复合疲劳试验装置，由套筒4，凸耳5，导向柱6，螺旋转轴7，下支承板9，下支承总成8，扭矩传感器12以及挡板11组成；套筒4上端通过固定螺钉2与上夹头1相连；套筒4下端与螺旋转轴7联接；螺旋转轴7下端通过螺钉与下支承总成8相接；下支承板9通过紧固件与下支承总成8联接；在下支承板9下面安装有挡板11，用以防止下支承板9由于摩擦运动而发生松动；在下支承总成8的下端的两侧安装有挡板，用以固定下支承总成8的位置；扭矩传感器12通过螺钉分别纵向安装在下支承总成8和下连接头13之间，并用紧固螺母14在轴向与下支承总成联接，防止扭矩传感器12轴向转动；在套筒4的凸耳5和下支承板9的凸耳10之间有一可以上下移动的导向柱6。The pull-torsion composite fatigue test device of the present invention is composed of a sleeve 4, lugs 5, guide columns 6, a screw shaft 7, a lower support plate 9, a lower support assembly 8, a torque sensor 12 and a baffle 11; The upper end of the sleeve 4 is connected with the upper chuck 1 through the fixing screw 2; the lower end of the sleeve 4 is connected with the screw shaft 7; the lower end of the screw shaft 7 is connected with the lower support assembly 8 through screws; the lower support plate 9 is connected with the lower support assembly through fasteners. The support assembly 8 is connected; a baffle plate 11 is installed under the lower support plate 9 to prevent the lower support plate 9 from loosening due to frictional movement; baffle plates are installed on both sides of the lower end of the lower support assembly 8 to fix the lower support plate. The position of the support assembly 8; the torque sensor 12 is longitudinally installed between the lower support assembly 8 and the lower connector 13 through screws, and is connected with the lower support assembly in the axial direction with a fastening nut 14 to prevent the torque sensor 12 from rotating axially ; There is a guide column 6 that can move up and down between the lug 5 of the sleeve 4 and the lug 10 of the lower support plate 9 .
所述套筒4沿轴线分成两半，并用螺栓3联接。The sleeve 4 is divided into two halves along the axis and connected by bolts 3 .
所述套筒4的下端设有四个凹部，四个凹部装有四个球滚珠15。The lower end of the sleeve 4 is provided with four recesses, and the four recesses are equipped with four balls 15 .
本发明装置通过导向柱6的上下移动，实现试样的拉伸；同时，套筒4下端凹部的四个球滚珠15随着套筒4的垂直运动而带动螺旋转轴7旋转，实现试样的扭转运动；而扭矩传感器10将实现拉伸力与扭转力的实时在线跟踪。The device of the present invention realizes the stretching of the sample through the up and down movement of the guide column 6; at the same time, the four balls 15 in the concave portion of the lower end of the sleeve 4 drive the rotation of the helical shaft 7 along with the vertical movement of the sleeve 4 to realize the stretching of the sample. Torsion movement; and the torque sensor 10 will realize the real-time online tracking of tension force and torsion force.
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| CN103852205B (en) * | 2014-01-24 | 2017-02-15 | 昆山洺九机电有限公司 | Anti-overloading torsion sensor |
| CN106092786A (en) * | 2016-07-25 | 2016-11-09 | 东莞前沿技术研究院 | Kneading test platform |
| CN106840927B (en) * | 2016-12-22 | 2019-04-02 | 西南交通大学 | The compound fretting fatigue testing equipment of tension-torsion and test method |
| CN107192612B (en) * | 2017-06-02 | 2019-08-13 | 东北大学 | A tensile torsion fatigue test bench |
| CN107607239A (en) * | 2017-08-29 | 2018-01-19 | 武汉理工大学 | A kind of skeleton symbol impact force and torsion-testing frock |
| CN108120647B (en) * | 2017-12-18 | 2020-01-31 | 宁波大学 | A material impact torsional loading experimental device |
| CN108088747A (en) * | 2018-01-25 | 2018-05-29 | 大连理工大学 | Device and method for testing tension-torsion coupling performance of flexible umbilical cable structures |
| CN110044697A (en) * | 2019-04-12 | 2019-07-23 | 中国人民解放军总参谋部第六十研究所 | Tension-torsion fatigue experimental device |
| CN110954402A (en) * | 2019-12-20 | 2020-04-03 | 太原科技大学 | Thermal simulation composite compression/tension torsion experimental device |
| CN113552004A (en) * | 2021-06-07 | 2021-10-26 | 东莞材料基因高等理工研究院 | A torsional loading device and testing machine for torsional experiment of material mechanics |
| CN114894632B (en) * | 2022-07-14 | 2022-09-13 | 季华实验室 | Fatigue comprehensive testing machine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH04106452A (en) * | 1990-08-28 | 1992-04-08 | Matsushita Electric Works Ltd | Testing apparatus of combined load |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH04106452A (en) * | 1990-08-28 | 1992-04-08 | Matsushita Electric Works Ltd | Testing apparatus of combined load |
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