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Patent Agency Ranking
1.发明申请公开(公告)号：US20200309624A1
公开(公告)日：2020-10-01
申请号：US16603979
申请日：2018-07-17
Applicant: Dalian University of Technology
Inventor： Qingchao SUN , Qingyuan LIN , Bao ZHANG , Bin YANG , Xiaokai MU
Abstract: The present invention belongs to the technical field of multiple bolt transverse load loosing testers, and relates to a closed loop control method for transverse load amplitude of multiple bolt loosing tester. The closed loop control method is used to conduct stepless amplitude modulation and accurate control for transverse loads of a multiple bolt loosing tester, thereby realizing stepless amplitude modulation and accurate control for the transverse loads. The closed loop control method is realized based on the multiple bolt loosing tester. The multiple bolt loosing tester consists of four parts: a transverse load amplitude control part, a transverse load transmission part, a torque load transmission part and an axial load transmission part. The present invention can provide stepless amplitude modulation continuous transverse loads for a flange bolt set and guarantee the accuracy of the transverse loads through a closed loop control system.
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公开(公告)号：US20200264085A1
公开(公告)日：2020-08-20
申请号：US16603728
申请日：2018-07-17
Applicant: DALIAN UNIVERSITY OF TECHNOLOGY
Inventor： Qingchao SUN , Qingyuan LIN , Bao ZHANG , Xiaokai MU , Bin YANG
Abstract: The present invention belongs to the technical field of mechanical testing devices, and provides a transverse load stepless amplitude modulation device of multiple bolt loosing tester. The transverse load stepless amplitude modulation device of multiple bolt loosing tester consists of four parts: a transverse load stepless amplitude modulation part, a transverse load transmission part, a torque load transmission part and an axial load transmission part. The transverse load stepless amplitude modulation device of multiple bolt loosing tester of the present invention provides stepless amplitude modulation continuous transverse loads for a flange bolt set and guarantees the accuracy of the transverse loads through a feedback control system.
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公开(公告)号：US20200284669A1
公开(公告)日：2020-09-10
申请号：US16603516
申请日：2018-08-22
Applicant: DALIAN UNIVERSITY OF TECHNOLOGY
Inventor： Qingchao SUN , Xiaodong LI , Qingyuan LIN , Xiaokai MU
Abstract: The present invention belongs to the technical field of joint surface pressure detection of connecting pieces, and provides an FBG sensor-based bolt fastening joint surface pressure detection method, comprising the steps of determining the size and the position of an FBG sensor; and determining the pressure of a joint surface measuring position on the basis of the single bolt connection joint surface pressure distribution theory, and completing calibration in real-time correspondence to the strain and pressure values to realize precise detection of the joint surface pressure. Determining the size and the position of the FBG sensor embedding slot according to the above method can ensure the reliability and accuracy of strain information; and an accurate strain-joint surface pressure curve can be obtained in combination with the determination of the joint surface pressure, which provides a practical and feasible method for the research on the bolt connection joint surface pressure.
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4.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.
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5.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.
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