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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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Patent Agency Ranking
2.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：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.
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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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6.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.
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