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公开(公告)号：US20180372690A1
公开(公告)日：2018-12-27
申请号：US16016829
申请日：2018-06-25
Applicant: Sichuan University
Inventor： Jianfeng LIU , Huining XU , Jianliang PEI , Lu WANG , Chunping WANG , Xiaozhang LEI , Wenxi FU , Jianhui DENG
Abstract: The present invention discloses an acoustic emission sensor, including an acoustic emission probe, a probe installation mechanism, and a transmission mechanism transmitting a combination of the acoustic emission probe and the probe installation mechanism to a setting position in a borehole of a monitored rock mass; the probe installation mechanism includes a shell, a probe sleeve, a spring sleeve, a spring, and a fixed pulley component; the probe sleeve is installed in the guide cylinder of the shell, the spring sleeve is fixed on two sides of the probe sleeve, the spring is installed inside the spring sleeve; one end of the first rope in the fixed pulley component is fixedly connected to the end cap in the upper end surface of the probe sleeve through the fixed pulley mounted on the top of the inner wall of the shell.
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公开(公告)号：US20240068919A1
公开(公告)日：2024-02-29
申请号：US18464364
申请日：2023-09-11
Applicant: Sichuan University
Inventor： Jianfeng LIU , Heping XIE , Lu WANG , Yougang CAI , Lina RAN , Chunping WANG , Gan FENG , Hua LI , Xiangchao SHI , Jianliang PEI , Huining XU , Xiaozhang LEI , Jianhui DENG
CPC classification number: G01N3/12 , G01N3/165 , G01N2203/0017 , G01N2203/0037 , G01N2203/0206 , G01N2203/0256
Abstract: A rock direct tensile test platform suitable for all material test machines includes a support frame. A top of the support frame is fixed with a top plate, and a bearing plate is provided above the top plate. The bearing plate is provided with a plurality of vertical force transferring rods. The force transferring rods vertically penetrate through the top plate and have a sliding fit with the top plate. Lower ends of the force transferring rods are provided with a tensile base. A top of the tensile base is provided with a lower clamp holder. A bottom of the top plate is provided with an upper clamp holder, and a clamp center of the upper clamp holder coincides with a clamp center of the lower clamp holder.
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公开(公告)号：US20200232950A1
公开(公告)日：2020-07-23
申请号：US16699130
申请日：2020-03-30
Applicant: Sichuan University , Chengdu University
Inventor： Huining XU , Jianfeng LIU , Yan WAN , Jianliang PEI , Lu WANG , Chunping WANG , Qiangxing ZHANG
Abstract: A system for monitoring rock damage in deep engineering environment includes an acoustic emission sensor assembly and an acoustic emission amplifier assembly. The assemblies are mounted on a rock mechanics test system. The acoustic emission sensor clamp includes a coupling screw, as well as a clamp cover, a clamp cylinder, and a coupling panel threadedly connected in sequence. The acoustic emission amplifier assembly includes an acoustic emission amplifier, an upright column having a guide rail, a lifting support plate, and a support plate lifting oil cylinder. Additionally, an evaluation method based on acoustic emission tempo-spatial evolution laws is presented. According to the properties of acoustic emission, fractal characteristics of damage evolution processes of rock test pieces are analyzed and the relationship between stress, energy and fractal dimension in the whole process of tensile deformation damage of the rock test pieces is obtained.
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公开(公告)号：US20190331568A1
公开(公告)日：2019-10-31
申请号：US16396797
申请日：2019-04-29
Applicant: Sichuan University
Inventor： Jianfeng LIU , Xiaozhang LEI , Wenxi FU , Feng DAI , Yufeng WEI , Chunping WANG , Huining XU , Jianliang PEI , Fei WU , Gang CHEN , Jinbing WEI
Abstract: A triaxial high temperature and high pressure rock mechanics load test platform includes a base, a lifting seat, and an intermediate connecting seat arranged between the base and the lifting seat. A hydraulic assembly is arranged between the base and the intermediate connecting seat; the intermediate connecting seat is connected with the lifting seat by means of a group of connecting rods; the lifting seat is enclosed by a side wall and a base plate to form a receiving groove with an upward opening; and a limiting device is arranged on the side wall of the lifting seat for preventing an MTS triaxial force sensor from disengaging from a support disk.
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Patent Agency Ranking
5.发明公开公开(公告)号：US20240068918A1
公开(公告)日：2024-02-29
申请号：US18455735
申请日：2023-08-25
Applicant: Sichuan University
Inventor： Jianfeng LIU , Heping XIE , Xin HE , Lu WANG , Lina RAN , Chunping WANG , Yougang CAI , Xiangchao SHI , Gan FENG , Hua LI , Xiaozhang LEI , Jianhui DENG
IPC: G01N3/08
CPC classification number: G01N3/08 , G01N2203/0017 , G01N2203/0055 , G01N2203/0075 , G01N2203/0087 , G01N2203/0256
Abstract: A direct tensile and acoustic testing machine under rock seepage includes a sample and a support frame. A top of the support frame is fixed with a top plate, a bearing plate is provided above the top plate, the bearing plate is provided with a plurality of vertical force transferring rods, the force transferring rods vertically penetrate through the top plate and sliding fit with the top plate, lower ends of the force transferring rods are provided with a tensile base, a top of the tensile base is provided with a lower clamp holder, a bottom of the top plate is provided with an upper clamp holder, and a clamp center of the upper clamp holder overlaps with a clamp center of the lower clamp holder. An acoustic component and a seepage component are provided in the upper clamp holder and the lower clamp holder.
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公开(公告)号：US20200217821A1
公开(公告)日：2020-07-09
申请号：US16699123
申请日：2019-11-29
Applicant: Sichuan University , Chengdu University
Inventor： Jianfeng LIU , Yan WAN , Jun ZHENG , Lu WANG , Dongjie XUE , Chunping WANG , Qiangxing ZHANG
Abstract: A tempo-spatial evolution test system for rock breaking in deep and complex environment includes an acoustic emission sensor assembly and an acoustic emission amplifier assembly that are arranged on a rock mechanics test system. A triaxial cavity coupling bracket is arranged on an outer wall of the triaxial cavity and between two sets of acoustic emission sensor assemblies. The triaxial cavity coupling bracket includes a plate-shaped bracket, two sickle-shaped brackets, and at least three bracket bolts, which can be tightly wrapped on the outer wall of the triaxial cavity. A lateral side of the plate-shaped bracket vertically fixes two guide columns. The acoustic emission amplifier assembly is arranged between the two guide columns and is located above the plate-shaped bracket, and the acoustic emission amplifier assembly is connected to the acoustic emission sensor assembly through a signal line.
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公开(公告)号：US20190331570A1
公开(公告)日：2019-10-31
申请号：US16396784
申请日：2019-04-29
Applicant: Sichuan University
Inventor： Jianfeng LIU , Heping XIE , Huining XU , Jianliang PEI , Chunping WANG , Jianhui DENG , Wenxi FU , Lu WANG
Abstract: The invention belongs to the field of rock mechanics test of engineering rock masses and is intended to address the safety and alignment challenges of a rock mechanics test response system for existing simulated complex deep earth environment. A rock mechanics test response system for a simulated complex deep earth environment includes a bearing system for rock mechanics tests in simulated deep earth environment and an MTS triaxial sensor aligning and mounting device arranged on the bearing system for rock mechanics tests in simulated deep earth environment. The invention improves installation and dismounting efficiency of an MTS triaxial force sensor, enhances reliability of lifting and solves the problem of aligning holes during installation of the force sensor, thus improving the installation efficiency.
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公开(公告)号：US20190331567A1
公开(公告)日：2019-10-31
申请号：US16396790
申请日：2019-04-29
Applicant: Chengdu University of Technology , Sichuan University
Inventor： Yufeng WEI , Jianfeng LIU , Lu WANG , Huining XU , Xiaozhang LEI , Jianhui DENG , Dongjie XUE , Chunping WANG , Jianliang PEI , Wenxi FU , Da ZHENG
IPC: G01N3/02
Abstract: A loading platform for a rock mechanics test system (MTS) to realize simple and reliable connection between a high temperature and high pressure force sensor in a triaxial chamber cavity and an upper solid rigid column. The loading platform for rock mechanics test includes a master rod, a secondary rod and a stop sleeve sleeved on the master rod; the stop sleeve is provided with two corbel structures; the secondary rod is composed of a secondary rod head body and a secondary rod body; a circular magnetic block is fixed on the secondary rod to adsorb a hole alignment sleeve sleeved on the secondary rod; and the hole alignment sleeve marked with a first scale line and a second scale line.
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公开(公告)号：US20180372689A1
公开(公告)日：2018-12-27
申请号：US16015218
申请日：2018-06-22
Applicant: Sichuan University
Inventor： Jianfeng LIU , Lu WANG , Chunping WANG , Jianliang PEI , Huining XU , Jun ZHENG
Abstract: The present invention discloses an acoustic emission monitoring and transmission system for engineering rock mass including an acoustic emission sensor and a ground workstation. The acoustic emission sensor is installed in a borehole of the monitored rock mass and transmits a received monitoring signal to the ground workstation through a cable. The acoustic emission sensor includes an acoustic emission probe, a probe installation mechanism and a transmission mechanism which transmits the probe installation mechanism with the acoustic emission probe to a setting position inside the borehole. The probe installation mechanism includes a shell connecting to the transmission mechanism and a probe sleeve for accommodating the acoustic emission probe.
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