橡塑往复密封技术的研究现状与发展趋势

张妙恬，李德才，索双富

（清华大学 机械工程系，北京100083）

摘要：橡塑往复密封圈作为机械系统的基础零部件，在工业生产中起着重要作用。环境变化的日益复杂、技术水平的日益提高，对橡塑往复密封技术提出了极高的要求。该文围绕橡塑往复密封技术，从往复密封机理、数值分析、实验研究三方面详细阐述了橡塑往复密封技术的发展历程及研究现状，总结了橡塑往复密封技术的现存问题，并讨论了其发展趋势。通过研究讨论，可更好地了解橡塑往复密封技术，为密封技术的理论实验研究、性能优化及寿命可靠性研究打下了基础。

关键词：橡塑密封；往复密封；研究现状；发展趋势

中图分类号：TB42文献标志码：A文章编号：1008-0813（2021）03-0001-05

Research and Development Trend of Rubber Reciprocating Sealing Technology

ZHANG Miao-tian, LI De-cai, SUO Shuang-fu

(Department of Mechanical Engineering, Tsinghua University, Beijing100083, China)

Abstract: As a basic component of a mechanical system, rubber reciprocating seals play an important role in industrial production. The increasing complexity of environmental changes and the technological level have placed extremely high demands on rubber reciprocating sealing technology. This article focuses on the rubber reciprocating sealing technology, firstly, elaborates the development process and research status of the rubber reciprocating sealing technology from three aspects: reciprocating sealing mechanism, numerical analysis and experimental research. Secondly, this article summarizes the existing problems of rubber reciprocating sealing technology, and discussed its development trend. Through these research and discussion, a better understanding of rubber reciprocating sealing technology can lay a foundation for theoretical experimental research, performance optimization and life-span reliability research of sealing technology.

Key words: rubber seal; reciprocating seal; research status; development trend

飞机液压系统健康管理技术研究进展

周密愉

（中国商飞上海飞机设计研究院，上海201210）

摘要：飞机液压系统作为飞机的重要能源系统，为主飞控、高升力、起落架系统提供液压能源，液压系统的健康状态对飞机安全而言至关重要。该文对飞机液压系统健康管理的主要研究对象、健康状态分类方法与健康管理的关键技术方面对飞机液压系统健康管理进行了综述，以期对飞机液压系统健康管理的研究、应用及发展有一定的助益。

关键词：飞机液压系统；健康管理；寿命预测；研究进展

中图分类号：TH137文献标志码：A文章编号：1008-0813（2021）03-0006-04

Research Progress of Aircraft Hydraulic System Health Management

ZHOU Mi-yu

(Shanghai Aircraft Design and Research Institute of COMAC, Shanghai201210, China)

Abstract: Aircraft hydraulic system, which is an important energy system, provide the hydraulic pressure for the primary flight control system, high lift system and landing gear system. The health condition of hydraulic system is of vital importance to the safety of flight. This paper summarize the research object, the method of health condition classification and the key technology of aircraft hydraulic system, hopefully can give a hand in the research, application and development of aircraft hydraulic system health management technology.

Key words: aircraft hydraulic system; health management; useful life prediction; research progress

伺服阀主阀泄漏量研究

刘森，郑文明，刘雨

（首钢京唐钢铁联合有限责任公司设备部，河北唐山063200）

摘  要：内泄漏量是评价伺服阀性能的主要技术指标之一，伺服阀内泄漏量过大会影响液压系统的工作效率和运行稳定性。为了研究伺服阀内泄漏产生的原因，设计、制作了能够测试伺服阀主阀各节流口流量曲线和内泄漏流量曲线的试验台。通过测试新、旧伺服阀各节流口流量曲线和内泄漏流量曲线，得出阀芯、阀套锐边的磨损是导致伺服阀中位内泄漏增加的主要原因。伺服阀中位内泄漏量过大，导致液压系统发热严重、效率降低，影响液压系统的稳定运行。提出在液压设备的管理和维护中，应定期对伺服阀进行检测。

关键词：泄漏量；测试；流量曲线；锐边

中图分类号：TH137.52文献标志码：A文章编号：1008-0813（2021）03-0009-04

Study on Main Valve Leakage of Servo Valve

LIU Sen，ZHENG Wen-ming，LIU Yu

（ShougangJingtang United Iron ＆ Steel Co., Ltd., Equipment Department, Tangshan063200, China)

Abstract: In this paper, the cause of leakage of Servo valve main valve is analyzed. In order to study the leakage mechanism of Servo Valve, a test-bed was designed and made, which can detect the flow curve of every throttle port and the leakage flow curve of servo valve. By detecting the flow curve and leakage flow curve of every throttle port of the new and old servo valves, the reason of the increase of leakage was analyzed, which led to the energy consumption. In the management and maintenance of hydraulic equipment, servo valve should be tested regularly.

Key words: leakage；testing；flow curve；sharp edge

关于滤芯耐环境疲劳的特性分析

冯广祥

(新乡航空工业（集团）有限公司，河南 新乡453019)

摘要：滤芯是飞机液压系统过滤器实现过滤功效的关键部件。在过滤器鉴定时，按照现有航空标准一般采用新滤芯进行过滤效率试验考核，然而当过滤器实际安装在飞机液压系统中时，在遭受系统冷起动极限压力、流量循环疲劳等工况后，滤芯过滤性能会大幅下降，最终导致过滤器失效，而这种失效往往被人们忽视。该文结合某型飞机液压系统的工况，通过对比分析两种滤芯在经受冷起动、流量循环疲劳环境试验前后的结构完整性及过滤特性，为同类产品的安全性和可靠性设计提供经验借鉴，以便最大程度的降低产品在装机后的失效风险。

关键词：冷起动；流量疲劳；过滤效率；失效

中图分类号：TH137;V19文献标志码：A文章编号：1008-0813（2021）03-0012-04

Analysis on Filter Element Environmental Fatigue Resistance

FENG Guang-xiang

(Xinxiang Aviation Industry (Group) Co., Ltd., Xinxiang 453019，China)

Abstract: Filter element is the critical part for aircraft hydraulic system filter performance. Fresh filter is normally selected for filter performance qualification, however this character may obviously drop down and cause filter failure after suffering from system cold-start limit pressure, flux cycle fatigue and other working conditions. In this paper, two filters are compared and analyzed under system condition before and after the cold-start and flow cycle fatigue tests, evidence are provided to support similar safety and reliability design to avoid the potential performance failure.

Key words: cold start; flux fatigue; filter performance; failure

车载垂直轴式增压泵内部流场及振动特性研究

闫春丽

（烟台汽车工程职业学院，山东烟台265500）

摘要： 以车载垂直轴式增压泵为研究对象，根据工作原理及结构特点建立CFD分析模型，采用多重坐标参考系法定义动区域，应用粘弹性Laminar湍流模型，得出不同柔性叶片长度条件下增压槽内的速度场。通过振动测试仪，揭示了液压管道振动规律以及关键影响因素。研究结果表明：增压泵叶片的柔性区尺寸是影响搅拌速率和直线液压管道振动的关键因素，但是对于环形液压管道的振动幅值和固有频率几乎没有影响。

关键词： 增压泵；流场；CFD模型；振动；固有频率；有限元

中图分类号：TH137；TD433文献标志码：A文章编号：1008-0813（2021）03-0016-05

Research on Internal Flow Field and Vibration Characteristics of Vehicle

Mmounted Vertical Shaft Booster Pump

YAN Chun-li

(Yantai Automotive Engineering Career Academy, Yantai265500， China)

Abstract: Taking the vehicle mounted vertical shaft booster pump as the research object, the CFD analysis model is established according to the working principle and structural characteristics. The moving region is defined by the multi coordinate reference system method, and the velocity field in the booster tank is obtained by using the viscoelastic laminar turbulence model. Through the vibration test, the vibration law and key influencing factors of drainage pipeline are revealed. The results show that the size of the flexible zone of the booster pump blade is the key factor to affect the mixing rate and the vibration of the straight pipe, but it has little effect on the vibration amplitude and natural frequency of the ring pipe.

Key words: booster pump; flow field; CFD model; vibration; natural frequency; finite element

某型无人机充气设备设计

包攀峰^1,2，秦硕^1,2，欧佳顺^1,2，司勇³

（1.空军航空维修技术学院，湖南长沙410124;

2.湖南省飞机维修工程技术研究中心，湖南长沙410124;

3.复杂航空系统仿真重点实验室，北京100076）

摘要：无人机用航空地面气体保障设备作为无人机系统地面维修和飞行作战保障的主要资源，是直接影响无人机各项作战功能发挥的重要因素。为了解决无人机地面气体保障要求高、难度大，且保障技术新、接口特别多等问题，针对某型无人机的地面气体保障要求，分别从技术指标确定、工艺流程研究以及具体结构设计等方面对无人机充气设备进行了设计研究。从研究结果上来看，该型充气设备能够较好地满足无人机地面气体保障的需求，对无人机系统的建设和发展具有深远的意义。

关键词： 无人机；充气设备；设计；工艺

中图分类号：TH138;V245.4文献标志码：A文章编号：1008-0813（2021）03-0020-04

Design of Inflatable Equipment for a Unmanned Aerial Vehicle

BAO Pan-feng^1,2，QIN Shuo^1,2，OU Jia-shun^1,2, SI Yong³

(1. Airforce Aviation Repair Institute of Technology，Changsha410124, China

2. Hunan Provincial Engineering Research Center for Aircraft Maintenance， Changsha 410124, China

3. Science and Technology on Complex Aviation Systems Simulation Laboratory， Beijing100076，China)

Abstract: As the main resources of UAS ground maintenance and flight combat support, UAV air ground gas support equipment is an important factor that directly influences UAV operational functions. In order to solve the problems such as high demand and difficulty of ground gas support for UAVs, new technology and many interfaces, and to meet the requirements of ground gas support for UAVs, this study elaborated the design scheme of ground inflatable equipment for UAVs. The design and study of UAV inflatable equipment were carried out from the aspects of technical index determination, technological process research and structure design. From the results of the study, this type of inflatable device can meet the demand of UAVs for ground gas support, and has far-reaching significance for the construction and development of UAVs.

Key words: unmanned aerial vehicle; inflatable equipment; design; process

公路隧道钻孔机器人钻孔机构的设计

李祥阳^1，2，曹鹏¹，赵亮³

（1.西安建筑科技大学，陕西 西安710055；

2.西安航空学院液压技术研究院，陕西 西安710077； 3.陕西理工大学，陕西 汉中723000）

摘要：该设计是以步进电机驱动滚珠丝杆为核心，针对公路隧道侧壁上进行钻孔而设计的钻孔机器人装置的钻孔机构，钻孔机构可调整钻头的倾斜角度为0°~45°之间摆动，可实现钻孔孔径8 mm。可根据施工要求，不同角度、不同深度的精准钻孔，可缩短公路隧道布线作业的工作时间，提高钻孔精度，实现智能化钻孔，对解放工人劳动力和提升公路隧道作业效率具有重要的意义。

关键词：公路隧道；机器人；钻孔机构；设计

中图分类号：TH137文献标志码：A文章编号：1008-0813（2021）03-0024-04

Design of Drilling Mechanism for Highway Tunnel Drilling Robot

LI Xiang-yang^1,2, CAO Peng¹, ZHAO Liang³

（1. Xi'an University of Architecture and Technology, Xi'an710055, China；

2. Xi'an Aerotechnical College Hydraulic Technology Research Institute, Xi'an710077, China；3. Shaanxi University of  Technology, Hanzhong723000, China）

Abstract: This design is based on the ball screw driven by the stepping motor. It is a drilling mechanism of the drilling robot designed for drilling on the side wall of the highway tunnel. The drilling mechanism can adjust the tilt angle of the drill bit to swing between 0 and 45 degrees. The drilling mechanism can achieve the drilling hole diameter of 8 mm. According to the construction requirements, the design can drill accurately at different angles and depths, shorten the working time of the road tunnel wiring operation, improve the drilling accuracy, and realize the intelligent drilling, which is of great significance to liberating the labor force and improving the efficiency of the road tunnel operation.

Key words: highway tunnel; robot; drilling mechanism; design

基于迭代学习的电液机械手末端轨迹跟踪控制研究

刘雯

(咸阳职业技术学院机电（技师）学院，陕西咸阳712000)

摘要：针对目前常见串联式机械手末端存在控制误差累计而导致末端控制精度较低，无法实现高精度位置伺服控制，使得末端轨迹跟踪控制较差等问题，该文借助迭代学习控制算法的优点，提出了一种基于迭代学习的电液机械手末端轨迹跟踪控制算法。首先，该文以型号为REbot-6R机械手为研究对象，建立机械手的三维模型和坐标，利用D-H坐标，建立REbot-6R机械手运动学模型；然后，设计了基于迭代学习的电液机械手末端轨迹跟踪控制器；最后，以REbot-6R机械手为对象搭建实验平台进行轨迹跟踪控制实验。实验结果表明了迭代学习算法能够很好的运用在REbot-6R机械手上，有效性地解决机械手末端轨迹跟踪控制较差等问题，提高了轨迹跟踪精度。

关键词：REbot-6R机械手；迭代学习控制；运动学；轨迹跟踪

中图分类号：TH137;TP241文献标志码：A文章编号：1008-0813（2021）03-0028-05

Research on Trajectory Tracking Control of Electro Hydraulic

Manipulatorbased on Iterative Learning

LIU Wen

(Xianyang Vocational Technical College, College of Mechanical and Electrical Engineering,

Xianyang712000, China)

Abstract: In order to solve the problem of low precision of end control caused by the accumulation of control error in the end of common series manipulator, high-precision position servo control can not be realized, and the end track tracking control is poor. With the advantages of iterative learning control algorithm, this paper proposes an end tracking control algorithm of electro-hydraulic manipulator based on iterative learning. First of all, this paper takes the rebot-6r manipulator as the research object, establishes the three-dimensional model and coordinates of the manipulator, and establishes the kinematics model of the rebot-6r manipulator by using the D-H coordinate; then, designs the end trajectory tracking controller of the electro-hydraulic manipulator based on iterative learning; finally, taking the rebot-6r manipulator as the object, an experimental platform is built for the trajectory tracking control experiment. The experimental results show that the iterative learning algorithm can be well used in rebot-6r manipulator, effectively solve the problem of poor trajectory tracking control at the end of the manipulator, and improve the trajectory tracking accuracy.

Key words: Rebot-6R manipulator; iterative learning control; kinematics; trajectory tracking

多孔阻尼对脉动衰减器传递损失的影响

葛茂鑫，赵洪建，张志新

（大连大学机械工程学院，辽宁 大连116622）

摘要：为研究多孔阻尼对脉动衰减器传递损失的影响，提出了一种具有多颈部的三自由度脉动衰减器，通过建立脉动衰减器等效力学模型，分析流体阻尼类型和颈部结构参数对系统传递损失的影响规律，给出了脉动衰减器的设计方法。结果发现：随着流体阻尼非线性程度增加，准确定义流体类型对评估系统传递损失有显著提升；增加阻尼孔数目，可拓宽系统共振频带和提升传递损失；同孔数目下，增加孔径可增加共振频率、提升传递损失，孔长则与其变化规律相反，且对传递损失影响较小。

关键词：多孔阻尼；脉动衰减器；传递损失；影响

中图分类号：TH137;TH703.63文献标志码：A文章编号：1008-0813（2021）03-0032-05

The Influence of Porous Damping on Pulsation Attenuator Transmission Loss

GE Mao-xin, ZHAO Hong-jian, ZHANG Zhi-xin

（School of Mechanical Engineering, Dalian University, Dalian116622, China）

Abstract: To study the effect of porous damping on the transmission loss of pulsating attenuator, a three-degree-of-freedom pulsation attenuator with multiple necks is proposed. By establishing the equivalent mechanical model of the pulsation attenuator, the influence of fluid damping type and neck structural parameters on the transmission loss of the system is analyzed, and the design method of the pulsating attenuator is given. This is the case. The results show that with the increase of non-linearity of fluid damping, the accurate definition of fluid type can significantly increase the transmission loss of the evaluation system; increasing the number of damping holes can significantly broaden the resonance frequency band and increase the transmission loss of the system; increasing the aperture number can also increase the resonance frequency and enhance the transmission loss, and the length of the hole will change. On the contrary, it is insensitive to the change of transmission loss.

Key words:porous damping; pulsation attenuator; transmission loss; influence

基于AMESim的液压挖掘机直线行走阀复位

弹簧刚度对系统特性的影响研究

吴健兴¹，路芳²

（1.贵州交通职业技术学院，贵州贵阳551403； 2.贵州理工学院机械工程学院，贵州贵阳550003）

摘要：该文基于AMESim工程软件，分析履带式液压挖掘机直线行走阀复位弹簧刚度的变化对液压系统动态响应特性的影响，仿真得出了多组数据，通过对仿真结果及试验数据的对比验证分析，找出了复位弹簧不同刚度对液压系统响应特性的具体影响，从而便于后期直线行走阀复位弹簧刚度的选取和挖掘机行走液压系统性能的优化与提升。

关键词：直线行走阀；复位弹簧；响应特性；AMESim

中图分类号：TH137文献标志码：A文章编号：1008-0813（2021）03-0037-04

Research on the Influence of Reset Spring Stiffness of Hydraulic Excavator

Linear Walking Valve on System Characteristics Based on AMESim

WU Jian-xing¹, LU Fang²

(1. Guizhou Jiao-tong College, Guiyang551403, China;

2. School of Mechanical Engineering, Guizhou Institute of Technology, Guiyang550003, China)

Abstract:This paper based on AMESim engineering software, to analyzes the influence of the change in the reset spring stiffness of the linear walking valve of crawler hydraulic excavator on the dynamic response characteristics of the hydraulic system, several sets of data were obtained by simulation, through the comparative verification and analysis of simulation results and test data, the specific influence of different stiffness of the reset spring on the response characteristics of the hydraulic system is found out, therefore, it is convenient to select the reset spring stiffness of the linear walking valve and optimize and improve the performance of the hydraulic system of excavator.

Key words: straight walking valve; return spring; response characteristics; AMESim

液力变矩器与涡轮增压发动机匹配的特定工况分析

葛林杉¹, 熊倪²

（1.一汽轿车股份有限公司,吉林长春130012; 2.江铃汽车股份有限公司,江西南昌330000）

摘要：液力变矩器广泛应用于AT及CVT车型上面，与整车匹配除了关注动力性、经济型及NVH外，还需要关注一些特定的工况。该文研究的是液力变矩器与涡轮增压发动机匹配对车辆高原坡起的影响，结合涡轮增压发动机高原功率、扭矩特性及液力变矩器液力特性分析，通过理论对比及实测验证，比较系统地说明了涡轮增压发动机与液力变矩器匹配过程中涉及到高原坡起问题的匹配要求，对于配有涡轮增压发动机车型的液力变矩器设计选型提供了重要的理论依据。

关键词：液力变矩器;液力传动;匹配;坡起

中图分类号：TH137文献标志码：A文章编号：1008-0813（2021）03-0040-04

Analysis on the Matching of Hydraulic Torque Converter

and Turbocharged Engine under Specific Condition

GE Lin-shan¹, XIONG Ni²

（1. FAW Car Co., Ltd., Changchun130012, China;

2. Jiangling Motors Co., Ltd., Nanchang330000, China）

Abstract: Hydraulic torque converter is widely used in the AT and CVT vehicles. To complete the vehicle matching design, in addition to focusing on the dynamic and economic performance and NVH, it also needs to pay attention to some specific working conditions. In this paper, the influence of the matching of the hydraulic torque converter and the turbocharged engine on the plateau hill starting of vehicles is studied. Combined the performance of the plateau power and torque of the turbocharged engine with the hydraulic characteristic analysis of the hydraulic torque converter, through theoretical comparison and actual measurement, the matching requirements of the turbocharged engine and the hydraulic torque converter related to the problem of the plateau hill starting in the matching process are systematically explained. It provides an important theoretical basis for the selection design of hydraulic torque converter on the vehicles with turbocharged engine.

Key words: torque converter; hydraulic transmission; matching; hill starting

液力变矩器涡轮外环冲槽机的液压驱动系统设计

潘文宏

Design on the Hydraulic Drive System of the Torque Converter

Turbine Outer Ring Notching Machine

PAN Wen-hong

（陕西国防工业职业技术学院智能制造学院，陕西西安710300）

摘要：为实现冲焊型液力变矩器涡轮外环冲槽机上横梁的三个冲压缸的高速升降动作要求，该文对冲槽机冲压缸端横梁立柱的液压驱动系统进行设计，并在此基础上进行改进。通过对冲槽机液压驱动系统的设计与研究，可为液力变矩器涡轮和泵轮内、外环的制造提供技术依据，从而大大提高液力变矩器的制造效率。

关键词：液力变矩器；涡轮外环；冲槽机；液压系统

压缩机排气脉动与气流流动实验研究

李小仨，李奇，李金禄

Experimental Study on Compressor Exhaust Pulsation and Air Flow Pulsation

LI Xiao-sa, LI Qi, LI Jin-lu

（合肥通用机械研究院有限公司压缩机技术国家重点实验室，安徽合肥230031）

摘要：脉动喷注噪声是一类重要的噪声源，往复式压缩机和旋转机械的排气噪声均属于脉动喷注噪声。该文通过设计实验，采集实验数据对比分析了高压气体流动、气流噪声与压缩机排气脉动的机理和区别，得出压缩机排气脉动的规律和气流流动的特性，为压缩机减震降噪提供实验依据。从压缩机排气口气流脉动沿管路衰减，衰减规律为3 dB/m。压缩机激发频率存在一个最大的脉动激发频率，随着压缩机的转速升高，气流脉动先增大后减小。压缩机产生的脉动大于高压气体流动产生的脉动值，在高压气体排放流动时，随着压比增大，气流流动脉动与流体噪声逐渐接近，最小值为0.47 dB。

关键词：压缩机；气流脉动；减振降噪；流噪声

中图分类号：TH138文献标志码：B文章编号：1008-0813（2021）03-0046-05

发动机流量参数准确输出研究

郑颖¹，郑显锋²

（1.西安航空学院，陕西西安710065； 2.西安航天计量测试研究所，陕西西安710100）

摘要：在流量参数量值传递过程中，存在着质量流量和体积流量的相互转化，而二者的转化过程中最主要的影响因素便是介质的密度，在流量标准装置中介质密度的最大影响因素便是工作温度。为了更好地保证流量参数量值传递的准确可靠，介质密度随温度的变化就需要额外被重视，通过温度监测去监控介质密度是实现流量参数量值输出准确的重要途径。这是产业发展的要求，也是传统计量向产业计量转型和国务院发布的《计量发展规划（2013—2020年）》的要求。

关键词：量值传递；质量流量；体积流量；密度；温度

中图分类号：TH137文献标志码：A文章编号：1008-0813（2021）03-0051-03

Research on the Accurate Output of Engine Flow Parameters

ZHENG Ying¹, ZHENG Xian-feng²

(1. Xi'an Aeronautical University, Xi'an710065, China;

2.Measuring and Testing Istitute Under Xi'an Aerospace Corporation, Xi'an710100, China)

Abstract: There are mass flow rate and volume flow of mutual transformation in the process of dissemination. Density is the influence factors of the transformation. Medium density in the flow standard device one of the biggest factors is the working temperature. Medium density with temperature change is need extra attention in order to better ensure traffic dissemination of accurate and reliable. Through the temperature monitoring to control medium density is an important approach to realize the flow rate of the metrological. This is the requirement of industrial development. This is the requirement of traditional metering to industry metrology transformation. This is the requirement of metrology development plan (2013-2020).

Key words: dissemination; mass flow rate; volume flow; the density of; the temperature

电液压力伺服阀的温度零漂分析

王利宁

（陕西秦峰液压有限责任公司，陕西汉中723000）

摘要：该文以典型的喷嘴挡板式电液压力伺服阀为例，介绍了电液压力伺服阀的工作原理及过程，从温度影响喷嘴、节流孔、磁性能、滑阀以及油液等几个方面，分析了电液压力伺服阀因温度变化从而引起输出压力发生变化的原因，并提出了减小温度零漂的措施。

关键词：温度零漂;电液压力伺服阀;喷嘴挡板;节流孔;解决措施

中图分类号：TH137文献标志码：A文章编号：1008-0813（2021）03-0054-03

The Temperature Zero Drift Analysis of Electro-hydraulic Pressure Servo Valve

WANG Li-ning

（Shaanxi Qinfeng Hydraulic Pressure Co., Ltd., Hanzhong723000， China）

Abstract: This paper taking the typical nozzle flapper type electro-hydraulic pressure servo valve as an example, introduces the working principle and process of the electro-hydraulic pressure servo valve and analyzes the reasons for the change of the output pressure of the electro-hydraulic pressure servo valve due to the change of the temperature from the aspects of the temperature affecting the nozzle, the orifice, the magnetic properties, the slide valve and the oil, and puts forward the measures to reduce the temperature zero drift.

Key words: temperature zero drift; electro-hydraulic pressure servo valve; nozzle-flapper; orifice; solution measures

液压缸微内漏检测试验台设计

陈国安¹， 王书婧¹， 王正兰¹, 范天锦²

（1.陆军工程大学训练基地，江苏徐州221004; 2.徐州金鼎恒立液压件有限公司，江苏徐州221116）

摘要：该文利用液压油的可压缩特性，采用高精度手动补偿计量方式，将低压大流量变量泵和高压小流量定量泵有机结合，设计了液压缸微内漏检测试验台，给出了手动计量装置的关键参数计算方法。这对生产厂家检测液压缸的密封性能，特别是对液压缸微小内漏量的检测有积极意义。

关键词：液压缸；内漏；检测；设计

中图分类号：TH137文献标志码：A文章编号：1008-0813（2021）03-0057-03

Design of Micro Internal Leakage Test-bed for Hydraulic Cylinder

CHEN Guo-an¹, WANG Shu-jing¹, WANG Zheng-lan¹, FAN Tian-jin²

(1. PLA Army Engineering University Training Base, Xuzhou 221004, China;

2. Xuzhou Jinding Hengli Hydraulic Components Co., Ltd., Xuzhou 221116, China)

Abstract: Based on the compressibility of hydraulic oil and high precision manual compensation metering method, the micro internal leakage test-bed of hydraulic cylinder was designed by combining low pressure and large flow variable pump with high pressure and small flow fixed pump. The calculation method of key parameters of manual metering device was given. It is of positive significance for manufacturers to test the sealing performance of hydraulic cylinder, especially for the detection of tiny internal leakage of hydraulic cylinder.

Key words: hydraulic cylinder; internal leakage; test;design

一种高可靠可重构的电液系统设计方法

王真真，张佳林，段培勇

（北京航天发射技术研究所,北京100076）

摘要：该文提出了一种基于可靠性框图的电液系统重构设计方法。基于系统可靠性和故障分析，对系统资源进行统筹规划，采用重构设计思想对系统链路进行构件备份和优化，系统自动识别故障并触发链路迁移，使系统具备了一定容错性。大大提高了系统可靠性和任务完成率。

关键词：可靠性;重构;电液系统；设计

中图分类号：TH137文献标志码：A文章编号：1008-0813（2021）03-0060-04

A High-reliability and Reconfigurable Electro-hydraulic System Design Method

WANG Zhen-zhen, ZHANG Jia-lin, DUAN Pei-yong

(Beijing Institute of Space Launch Technology, Beijing100076, China)

Abstract: This paper presents a design method of electro-hydraulic system reconfiguration based on reliability block diagram. Based on system reliability and failure analysis, it plans the system resources as a whole, adopts the reconfiguration design idea to back up and optimize the system links, and the system automatically identify faults and trigger link migration to make the system fault-tolerant, greatly improving system reliability and task completion rate.

Key words: reliability; reconfiguration; electro-hydraulic system; design

设计用于自动化检测某产品的气吸式工装

谭骏¹，方辉²，杨林林¹，王德龙¹，邱秀民¹

（1.中国工程物理研究院机械制造工艺研究所，四川绵阳621900；

2.四川大学机械工程学院，四川成都610065）

摘要：针对某批生产产品检测项目多，人工检测耗时长，出错风险大且传统装夹方式难以满足产品检测增速提效要求等问题，采用理论计算与试验验证相结合的方法对该产品设计了专用的气吸式批量检测工装。经实际验证，该工装密封效果良好，能实现目标产品的批量化装夹和测量，取代了此前的纯手动检测方式。通过该工装与已有的自动化检测单元相结合，对该产品进行了自动化检测转型的尝试，并取得了良好的应用效果。

关键词：气吸式工装；自动化；检测；设计

中图分类号：TH138;TH6文献标志码：A文章编号：1008-0813（2021）03-0064-03

Design of Air-suction Tooling for Automatic Detecting a Product

TAN Jun¹，FANG Hui², YANG Lin-lin¹，WANG De-long¹，QIU Xiu-min¹

(1. Institute of Machinery Manufacturing Technology, China Academy of Engineering Physics,Mianyang621900, China;

2. College of Mechanical Engineering, Sichuan University, Chengdu610065, China)

Abstract: Aiming at the problems of a large number of inspection items, long manual inspection time, high risk of errors, and the difficulty of traditional clamping methods to meet the requirements of product inspection speed increase and efficiency improvement, a special Air-suction batch inspection tooling was designed for the product by combining theoretical calculation and experimental verification. After actual verification, the tooling has a good sealing effect and can achieve batch clamping and measurement of the target product, replacing the previous pure manual detection method. Through the combination of the tooling and the existing automatic inspection unit, an attempt was made to transform the product into automatic inspection and achieved good application results.

Key words: air-suction tooling; automatic; detecting; design

一种液压操动机构动密封结构的优化改进

蒋龙¹，张润田²，陈静¹，谢正波¹，许艳蒲²，范雪丽²

（1.南方电网超高压输电公司，云南曲靖655000；

2.西安西电高压开关操动机构有限责任公司，陕西西安710077）

摘要：液压操动机构密封性能是影响其可靠性的重要因素，该文针对一种液压操动机构储能模块的动密封结构进行了研究，对该部位动密封结构及密封性能进行了分析，找到了影响储能活塞动密封性能的主要因素，通过对不同密封结构的对比分析，经过设计计算，提出了一种对储能活塞动密封结构的优化改进方案，通过试验验证，该优化改进方法有效提升了液压操动机构储能模块的密封性能。

关键词：液压操动机构；动密封; 结构；优化

中图分类号：TH137;TB42文献标志码：A文章编号：1008-0813（2021）03-0066-05

Optimization and Improvement on Dynamic Seal Structure of a Hydraulic

Operating Mechanism

JIANG Long¹, ZHANG Run-tian², CHEN Jing¹, XIE Zheng-bo¹, XU Yan-pu², FAN Xue-li²

(1. China Southern Power Grid EHV Transmission Company， Qujing655000, China;

2. Xi'an Xidian High-voltage Switch Operating Mechanism Co., Ltd., Xi'an710077, China)

Abstract: The sealing performance of hydraulic operating mechanism is an important factor affecting its reliability. This paper studies the dynamic sealing structure of an energy storage module of hydraulic operating mechanism, analyzes the dynamic sealing structure and sealing performance of this part, and finds out the main factors affecting the dynamic sealing performance of energy storage piston. Through the comparative analysis of different sealing structures, after design and calculation, a new type of dynamic sealing structure is proposed The optimization and improvement scheme of dynamic seal structure of energy storage piston is verified by experiments, which effectively improves the sealing performance of energy storage module of hydraulic operating mechanism.

Key words: hydraulic operating mechanism; dynamic seal; structure; optimization

装载机双速转向液压系统

李泽华，武宗才，王允

(广西柳工机械股份有限公司，广西柳州545007)

摘要：转向液压系统是装载机最重要的系统之一，结合装载机的使用工况，客户在进行V型铲装作业时，希望转向系统有较少的转向圈数，以提高工作效率；当进行长距离运输作业时，希望转向系统有较多的转向圈数，以保证整机的行驶稳定性。双速转向系统能够有效地解决效率与微控性的矛盾。

关键词：装载机；双速转向；液压系统

中图分类号：TH137文献标志码：A文章编号：1008-0813（2021）03-0071-02

A Two-speed Steering Hydraulic System for Wheel Loader

LI Ze-hua, WU Zong-cai, WANG Yun

（Guangxi LiuGong Machinery Co., Ltd., Liuzhou545007, China）

Abstract: The steering hydraulic system is one of the most important systems of wheel loaders. Considering the work condition of wheel loader, customers hope that the steering system can generate less turns when the machine is operating a V-shape cycle of shoveling and loading, so as to improve the machine's productivit; whereas they hope that the steering system can generate more turns during the long-distance operation to ensure the machine's stability under the transport condition. Therefore this paper introduces a two-speed steering hydraulic system for wheel loader, which can effectively balance the contradiction between the loader's productivity and micro control.

Key words: wheel loader; two-speed steering; hydraulic system

小型汽车起重机液压缸的泄漏特性研究

梅钰

Study on Leakage Characteristics of Hydraulic Cylinder for Small Truck Crane

MEI Yu

（烟台汽车工程职业学院，山东烟台265500）

摘要：为解决小型汽车起重机液压缸的泄漏问题，综合运用台架试验测试和有限元分析方法研究密封圈的损伤及接触应力特性。针对液压缸泄漏因素，采用LG-YYCS01型液压实验台对密封圈的泄漏特性进行定量检测，得出不同预紧力和油液压力条件下的泄漏量。搭建密封圈损伤实验台，根据小波变换原理得出密封圈损伤特征值。基于Abaqus对不同预压缩量条件下的密封圈接触应力进行计算，得出应力分布及变化规律。研究结果表明：预压缩量是影响密封圈接触应力峰值的关键因素，但是对整体的应力分布影响较小；过载密封圈的损伤将导致压力信号的离散性增强，油液的流动易出现随机波动，不利于液压系统的稳定性。

关键词：密封圈；液压；泄漏；小波变换；接触应力；有限元

中图分类号：TH137；TB42文献标志码：B文章编号：1008-0813（2021）03-0073-05

多路阀故障的模糊综合评价方法研究

崔竹君，王普长，马浩

（江苏徐工工程机械研究院有限公司，江苏徐州221004）

摘要：工程机械设备的液压多路换向阀结构复杂，可靠性表现出非单调性、依赖性、多态性等特征，多路阀故障排查越来越具有挑战。通过以挖掘机多路阀为研究对象，分析挖掘机多路阀在实际使用过程中的故障模式，运用模糊综合评价方法，量化多路阀不同故障模式的危害度，指导多路阀的设计优化能力及维修能力，保证设备稳定运行。

关键词：多路阀；故障；模糊综合评价；研究

中图分类号：TH137文献标志码：A文章编号：1008-0813（2021）03-0077-03

Research on Fault Fuzzy Comprehensive Evaluation Method for Multiple Directional Valve

CUI Zhu-jun, WANG Pu-chang, MA Hao

（Jiangsu XCMG Engineering Machinery Research Institute Co., Ltd., Xuzhou221004, China）

Abstract: hydraulic multiple directional valve structure of construction machinery equipment is complex, reliability shows non-monotonic, dependency, polymorphism and other characteristics, fault detection of multiple directional valve is becoming more and more challenging. By taking excavator multiple directional valve as the research object, analyzes the fault mode of excavator multiple directional valve in the actual use process, uses the fuzzy comprehensive evaluation method, quantifies the hazard degree of different fault mode, guides the design optimization ability and maintenance ability of multiple directional valve, and ensures the stable operation of equipment.

Key words: multiple directional valve; fault; fuzzy comprehensive evaluation; research

斜盘式柱塞泵轴瓦抱死故障分析与改进

刘雨¹，焦宏轶²，吴绍香¹，马吉光¹

Analysis and Improvement for Bearing Bush Locking Faults of Swashplate Piston Pump

LIU Yu¹, JIAO Hong-yi², WU Shao-xiang¹, MA Ji-guang¹

（1.中航力源液压股份有限公司，贵州 贵阳550018；

2.空装成都局驻贵阳地区第三军事代表室，贵州 贵阳550018）

摘要：针对某型号轴向柱塞泵在磨试过程中出现的固定支座与轴瓦抱死问题，运用动力学软件进行仿真分析，得出了滑履与卡盘组件碰撞接触力过大是引起轴瓦抱死的主要原因，并提出相应改进措施，最后，通过试验验证了相关改进措施的有效性。

关键词：斜盘式柱塞泵；轴瓦；分析；改进

中图分类号：TH137文献标志码：B文章编号：1008-0813（2021）03-0080-04

Q345E焊接工艺研究及其在超低温液压缸上的应用

韦金钰，曹星星，武珊

（徐州徐工液压件有限公司，江苏徐州221004）

摘要：随着我国工程机械领域的快速发展与焊接水平的提高，行业内对焊接质量提出了更高的要求，传统的焊接方法与工艺难以满足恶劣环境中工程机械的使用要求。Q345E以其优秀的低温冲击性能与良好的综合力学性能在承压设备领域应用广泛的，该文采用熔化极活性气体保护焊（MAG焊）对Q345E钢的焊接性进行了研究，并从微观组织到力学性能对液压缸用Q345E钢的焊接接头进行全面的分析。

关键词：Q345E；液压缸；显微组织；低温性能

中图分类号：TH137文献标志码：A文章编号：1008-0813（2021）03-0083-05

Q345E Welding Process Research and Its Application in Ultra-low

Temperature Hydraulic Cylinder

WEI Jin-yu, CAO Xing-xing, WU Shan

（Xuzhou XCMG Hydraulics Co., Ltd.,  Xuzhou221004, China）

Abstract: With the rapid development of my country's construction machinery field and the improvement of welding level, the industry has put forward higher requirements for welding quality. Traditional welding methods and processes cannot meet the requirements of construction machinery in harsh environments. Q345E is widely used in the field of pressure equipment with its excellent low temperature impact performance and good comprehensive mechanical properties. In this paper, the weldability of Q345E steel is studied by MAG welding (MAG welding), and the welded joints of Q345E steel for hydraulic cylinders are comprehensively analyzed from microstructure to mechanical properties.

Key words: Q345E; hydraulic cylinder; microstructure; low temperature performance

激光跟踪仪在液压缸形位公差检测中的应用

李玉发，徐力，汤宝石

（徐州徐工液压件有限公司,江苏徐州221300）

摘要：形位公差是影响液压缸试压过程平稳性的重要因素，液压缸缸筒内孔的直线度和焊后缸底耳环孔相对缸筒内孔的垂直度检测一直以来是一个行业难题，该文介绍一种基于激光跟踪仪的高精度检测方法，为液压缸加工过程的质量保证提供检测支撑。

关键词：液压缸；激光跟踪仪；形位公差；检测

中图分类号：TH137文献标志码：A文章编号：1008-0813（2021）03-0088-02

The Application of Laser Tracker for Detecting Geometrical

Tolerance of Hydraulic Cylinder

LI Yu-fa, XU Li, TANG Bao-shi

(Xuzhou Xugong Hydraulics Co., Ltd., Xuzhou221300, China)

Abstract: Geometrical tolerance is an important factor that affects the stability of the pressure test process of hydraulic cylinder. The straightness of the inner hole of hydraulic cylinder and the perpendicularity of the earring hole of cylinder bottom to the inner hole of the cylinder after welding have always been a difficult problem in the industry. This paper introduces a high-precision detection method based on laser tracker, which provides detection support for the quality assurance of the processing process of hydraulic cylinder.

Key words: hydraulic cylinder; laser tracker; geometrical tolerance; detecting

挖掘机液压缸活塞杆镀层起皮缺陷原因分析

于铁柱，姚广一，盛红瑞，韦金钰

（徐州徐工液压件有限公司，江苏徐州221004）

摘要：挖掘机液压缸是挖掘机的执行元件，其中活塞杆的电镀工序是保证其使用寿命的关键，该文对挖掘机液压缸活塞杆电镀常见的质量失效——镀层起皮进行分析，从多个角度分析缺陷产生的原因及解决方法，对快速排查挖掘机液压缸活塞杆镀层起皮失效的原因具有一定的指导作用。

关键词：挖掘机；液压缸活塞杆；镀层；分析

中图分类号：TH137文献标志码：A文章编号：1008-0813（2021）03-0090-03

Failure Analysis of Electrodeposited Coating for Excavator Hydraulic Cylinder Piston Rod

YU Tie-zhu, YAO Guang-yi, SHENG Hong-rui, WEI Jin-yu

(Xuzhou Xugong Hydraulic Component Co., Ltd., Xuzhou221004, China)

Abstract: The hydraulic cylinder of the excavator is the actuator of the excavator, in which the electroplating and corrosion prevention of the piston rod is the key to ensure its service life. This paper analyzes the common quality failure of hydraulic cylinder piston rod electroplating in excavator, and analyzes the causes and solutions of defects from many angles. It has certain guiding function to quickly remove the cause of skin failure of hydraulic cylinder piston rod coating of excavator.

Key words: excavator; hydraulic cylinder piston rod; electrodeposited coating; analysis

一种用于片式多路阀阀孔珩铰的新型设备

殷国防，韩宇，邵宗光，荆兴亚

A New Type of Honing Machine for the Hydraulic Valve Body Bore

YIN Guo-fang, HAN Yu, SHAO Zong-guang, JING Xing-ya

(徐州徐工液压件有限公司,江苏徐州221004)

摘要：设计开发了一种非标准化的新型珩铰设备用于片式多路阀阀孔精加工,实现了珩铰过程中工件的自动找正与夹紧，解决了阀体厚度偏差导致的片式多路阀组合后珩铰无法一次找正完成珩铰加工的问题。

关键词：阀体；阀孔；珩铰；设备

中图分类号：TH137文献标志码：B文章编号：1008-0813（2021）03-0092-02

油缸缸底形位公差保证能力研究

史先欢，汤宝石

（徐州徐工液压件有限公司 产品工艺所，江苏 徐州221000）

摘要：该文对油缸缸底焊接形位公差保证能力进行了研究。原有油缸缸底焊接，一般都是依靠行车吊装缸底人工组装点焊,然后转焊接专机满焊的过程，过程由于无法装夹限位，出现松动，无法准确保证其角度配合关系及垂直度要求，严重影响起重机、泵车、旋挖钻等工程机械车辆的作业效果，现设计一种顶紧式组装焊接平台，此平台采用模块化设计，方便加工和安装，以保证缸底垂直度要求，提高缸底配合的精确性，采用液压系统作为其配合顶紧力，实现两零部件焊接的稳定性。

关键词：油缸；组装平台；焊接；形位公差

中图分类号：TH137文献标志码：A文章编号：1008-0813（2021）03-0094-03

Research on Guaranteed Capacity of Hydraulic Cylinder Bottom Behavior Tolerance

SHI Xian-huan,TANG Bao-shi

（Xuzhou Xugong Hydraulic Parts Co., Ltd., Product Technology Institute, Xuzhou 221000, China）

Abstract: The paper researches on the capacity of shape and position tolerance of cylinder bottom welding is studied. Generally, the bottom of the cylinder is lifted by crane for manual assembly and welding, Because the clamping limit cannot be installed in the process, it becomes loose, and the Angle matching relationship and perpendicularity requirements cannot be guaranteed accurately, The operation effect of crane, pump truck, rotary drilling and other construction machinery vehicles is seriously affected, A jacking type assembly and welding platform is designed. This platform adopts modular design to facilitate processing and installation, so as to ensure the perpendicularity of the cylinder bottom, Improve the accuracy of cylinder bottom fit, The hydraulic system is used as the jacking force of the two parts to realize the stability of welding.

Key words: the hydraulic oil cylinder; assembly platform; welding; geometric tolerance