-
公开(公告)号：US20190242779A1
公开(公告)日：2019-08-08
申请号：US16338906
申请日：2017-09-11
Applicant: DALIAN UNIVERSITY OF TECHNOLOGY
Inventor： Qingchao SUN , Bao ZHANG , Chuanhua WANG , Wei SUN , Yue MA
Abstract: The present invention provides a testing machine for accurately controlling looseness of a transverse load, and belongs to the technical field of mechanical testing devices. The testing machine for accurately controlling looseness of the transverse load uses a motor to control the generated transverse displacement, controls the generated transverse load by controlling the motor, and controls the motor through signal feedback from the sensor to keep the generated transverse load basically stable within a small range of a fixed value. Unlike the existing testing machine for looseness of the transverse load that can only provide one fixed transverse displacement load, the present invention can provide a desired stable transverse displacement load and can provide a desired stable transverse force load to adapt to simulation experiments for different bolt loading conditions.
-
2.发明申请公开(公告)号：US20200080914A1
公开(公告)日：2020-03-12
申请号：US16613759
申请日：2018-03-15
Applicant: DALIAN UNIVERSITY OF TECHNOLOGY
Inventor： Qingchao SUN , Bao ZHANG , Qingyuan LIN , Wei SUN , Bin YANG
Abstract: The present invention provides a multi-bolt loosening test machine for flange with tension, bending and torsion compound loading. The multi-bolt loosening test machine for flange with tension, bending and torsion compound loading uses a transverse load generated by a three-phase asynchronous motor as a bending load applied to a flange, uses a tension force generated by a hydraulic puller as an axial tension load, and uses a torque generated by a servo motor as a torque load applied to the flange. The test machine is different from the current device that can apply two compound loads to a single bolt, and can apply three compound loads to the multi-bolt connection flanges. The present invention can isolate three compound loads from each other without interference, and display the applied loads in real time.
-
3.发明申请公开(公告)号：US20200080905A1
公开(公告)日：2020-03-12
申请号：US16613404
申请日：2018-03-15
Applicant: DALIAN UNIVERSITY OF TECHNOLOGY
Inventor： Qingchao SUN , Bao ZHANG , Qingyuan LIN , Wei SUN , Bin YANG
Abstract: The present invention belongs to the technical field of mechanical test devices, and provides a multi-bolt loosening test machine for flange with tension and bending compound loading, which is a test machine researching the anti-looseness properties of bolts by applying tension, bending and torsion compound loading to multi-bolt connection flanges. The multi-bolt loosening test machine for flange with tension and bending compound loading uses a transverse load generated by a three-phase asynchronous motor as a bending load applied to a flange, uses a tension force generated by a hydraulic puller as an axial tension load, is different from the current device that can apply two compound loads to a single bolt, and can apply two compound loads to the multi-bolt connection flanges. The present invention can isolate two compound loads from each other without interference, and display the applied loads in real time.
-
4.发明申请公开(公告)号：US20200018673A1
公开(公告)日：2020-01-16
申请号：US16338872
申请日：2017-09-08
Applicant: DALIAN UNIVERSITY OF TECHNOLOGY
Inventor： Qingchao SUN , Bao ZHANG , Chuanhua WANG , Wei SUN , Yue MA
Abstract: A closed-loop control method based on a testing machine for accurately controlling the loosening of a bolt transverse load is disclosed. The testing machine for accurately controlling the loosening of the transverse load comprises a load generating motor, a load transfer mechanism, a load control motor and a load control mechanism. The control method of the present invention controls the load generating motor to drive the load transfer mechanism based on control commands, displacement signals collected by the displacement sensor and force signals collected by an S-shaped column type pressure sensor. The testing machine for the looseness of the bolt transverse load is essential in the aspect of exploring a looseness law of a bolt, and can be used to simulate load bearing conditions of the bolt. However, under the condition that some bolts bear constant force load transversely, the testing machine is not used or is inaccurate. The control method of the present invention can accurately control the load transverse load to be stable, especially can ensure constant transverse load and can also simulate the transverse load bearing situation of the bolt more accurately and more comprehensively.
-
公开(公告)号：US20190170492A1
公开(公告)日：2019-06-06
申请号：US16321315
申请日：2017-05-03
Applicant: Dalian University of Technology
Inventor： Qingchao SUN , Jue WANG , Xin LIU , Wei SUN , Yingjie JIANG , Jiaqi SUO
IPC: G01B5/20
Abstract: Disclosed is a system for shape error in-situ measurement of large-scale torus, which comprises an attitude adjusting part, a rotating part and a measuring part. The attitude adjusting part comprises an attitude adjusting platform, an attitude adjusting platform motor and an adapter panel, wherein the attitude adjusting platform can adjust the rotation angles along z-axis and x-axis, the angle adjusted is controlled by the attitude adjusting platform motor, and the attitude adjusting part is connected with the rotating part through the adapter panel; the rotating part comprises a rotating index plate base and a high-precision rotating index plate which is released from fixation by a lever for rotating, rotated manually for a required angle, and then fixed again by restoring the lever; the measuring part comprises a sensor clamp, sensor holders, contact sensors and associated equipment, wherein the sensor clamp is positioned with the rotating index plate by a mandrel and then fixed by two bolts and nuts; and the sensor clamp has four groups of sensor jacks in total, with at least three jacks in each group, and a sensor holder is installed in each sensor jack and used for fixing each sensor.
-
Patent Agency Ranking
公开(公告)号：US20190154515A1
公开(公告)日：2019-05-23
申请号：US16099536
申请日：2017-10-19
Applicant: Dalian University of Technology
Inventor： Chunzheng DUAN , Wenneng KOU , Yuwen SUN , Fangyuan ZHANG , Penghe LIU , Wei SUN
Abstract: The invention provides a device and method for measuring the temperature of end face turning, which belong to the technical field of cutting and are applicable for measuring the temperature of cutting area during end surface turning. The device comprises a thermocouple sensor, a slip ring and a specially designed experiment workpiece. The circular ribs designed on the experiment workpiece transform the end surface turning into cylindrical turning. The design of a through hole and a blind hole makes the thermocouple sensor reasonably buried in the workpiece, which improves the safety of the turning process and the stability of signals. At the same time, the interference between devices is eliminated by using the slip ring structure. A temperature signal is collected by a data collection card via the slip ring and transmitted to a computer, and finally, a relatively accurate end surface turning temperature is obtained. The present invention has simple structure and easy operation, and provides a good device and method for realizing accurate measurement of end surface turning temperature.
-
公开(公告)号：US20230229725A1
公开(公告)日：2023-07-20
申请号：US17799165
申请日：2022-05-05
Applicant: DALIAN UNIVERSITY OF TECHNOLOGY
Inventor： Xueguan SONG , Liangliang YANG , Xiaonan LAI , Xiwang HE , Kunpeng LI , Yong PANG , Wei SUN , Peng LI
IPC: G06F17/10
CPC classification number: G06F17/10
Abstract: The present invention belongs to the technical field of signal processing, and relates to an online fast processing method for real-time data based on edge computing. In the present invention, a dynamic online de-noising method is adopted to remove noise contained in speeds to ensure the effectiveness and accuracy of de-noising results; for the displacement integrated online, an efficient method is adopted for dynamic online de-noising to further reduce the effectiveness of drift in the displacement value on final integration results; and under the condition of ensuring the accuracy of an integration method, an integration algorithm is embedded into an edge device to realize fast calculation and analysis of data near a data source and realize dynamic fast integration of online signals based on edge computing, which provides effective references for efficient processing and calculation of data.
-
公开(公告)号：US20200011176A1
公开(公告)日：2020-01-09
申请号：US16338956
申请日：2017-08-01
Applicant: DALIAN UNIVERSITY OF TECHNOLOGY
Inventor： Junzhou HUO , Wei SUN , Zhichao MENG , Xiaoqi HUANG , Youneng BAO
Abstract: The present invention provides a vibration and strain monitoring method for key positions of a tunnel boring machine (TBM), and belongs to the technical field of real-time monitoring for underground construction of the TBM. The present invention aims to provide a monitoring device and an all-weather monitoring and forecasting system thereof. The present invention acquires monitoring data through vibration and strain sensors and a wireless data transmission system, thereby realizing long-term real-time monitoring for vibration and strain states of key positions of a main machine system of the TBM during operation, reminding operators in time for maintenance and repair, preventing fatigue breakage on key weak positions of the main machine system of the TBM and ensuring safe and reliable operation of the TBM. The present invention further provides an evaluation method for strain states of positions which cannot be measured, i.e., an equivalent mapping method, thereby building a set of vibration monitoring and strain monitoring systems for the tunneling process of the key positions of the main machine system of the TBM.
-
公开(公告)号：US20190178642A1
公开(公告)日：2019-06-13
申请号：US16321991
申请日：2017-05-03
Applicant: Dalian University of Technology
Inventor： Qingchao SUN , Xin LIU , Jue WANG , Wei SUN , Yingjie JIANG , Jiaqi SUO
Abstract: The present invention provides a method for shape error in-situ measurement of toruses, and is realized based on a system for shape error in-situ measurement of large-scale toruses. The system for in-situ measurement comprises an attitude adjusting part, a rotating part and a measuring part. The attitude adjusting part comprises an attitude adjusting platform, an attitude adjusting platform motor and an adapter panel; the rotating part comprises a rotating index plate base and a high-precision rotating index plate; and the measuring part comprises a sensor clamp, sensor holders, contact sensors and associated equipment. The present invention realizes the application of the three-point method in shape error measurement of the torus, also realizes algorithm improvement of the three-point method in realizing shape error in-situ measurement of the torus, can realize shape error in-situ measurement of the torus, can greatly reduce the processing time of the part and can reduce the influence of repeated clamping on part precision.
-
10.发明申请公开(公告)号：US20190064014A1
公开(公告)日：2019-02-28
申请号：US16172342
申请日：2018-10-26
Applicant: DALIAN UNIVERSITY OF TECHNOLOGY
Inventor： Qingchao Sun , Bo YUAN , Wei SUN , Weiqiang HUANG
IPC: G01L1/25 , G01N3/12 , G01N29/265
Abstract: The present invention discloses an interface ultrasonic reflectivity-pressure relation curve establishment method and a loading testbed. The loading testbed comprises a force displayer, a control terminal, an oscilloscope, an immersion ultrasonic transducer, a large cylinder, a small cylinder, an upper panel, a movable plate, a force sensor, a lower panel, an ultrasonic transceiver and a small cylinder connecting plate. Compared with the existing schemes, the interface ultrasonic reflectivity-pressure relation curve establishment method and the loading testbed provided by the present invention can construct a more accurate ultrasonic reflectivity-pressure relation curve, and are high in detection precision
-
-
-
-
-
-
-
-
-
Search Results
15
records
(took 0.026 seconds)
