52results about How to "Guaranteed coupling effect" patented technology

The invention belongs to the technical field of structural optimization and discloses a multi-microstructure-oriented material structure integrated construction method. According to continuously changing material distribution and unit density which are obtained through a traditional variable density method, a material area is divided and subjected to unit density grouping on the basis of a post-processing mechanism, definition and dividing of areas, with different material attributes, in a macrostructure are achieved, and various microstructures in the macrostructure are defined; a material structure integrated design model is established on the basis of a parameterized level set topological optimization method and the homogenization theory, that is, integrated design is carried out according to various defined microstructures and the macrostructure, the parallel design of the macroscopic structure and the microstructures is achieved, and under a given constraint condition, the performance of the overall structure is optimal.

The invention belongs to the field of an ultrasonic detection technology in nondestructive testing and particularly relates to an ultrasonic probe clamp. Aiming to solve the problems in the prior art, the invention provides the ultrasonic probe clamp which is applicable to various sizes of probe outer diameters in a range of 12-24mm, is stable to clamp, is stable to scan and is good in coupling. The ultrasonic probe clamp is characterized in that a base (3) is in an annular structure with annular lug bosses at inner and outer sides; a supporting block (2) is in an arc-shaped structure with a lug boss at the lower part; a thread at the bottom of the lug boss of the supporting block (2) is engaged with a thread on the top of an outer side part of the inner side lug loss of the lug bosses of the base (3); a clamp inner ring (4) is mounted on a groove of an inner side part of the inner side lug loss of the base (3). According to the ultrasonic probe clamp, the supporting block 2, the clamp inner ring 4 and the base 3 are adopted; the relative central position of the supporting block 2 can be changed through rotating the clamp inner ring 4, so that a probe can be clamped to randomly adjust the diameter in a range of 12-24mm. The movement of the probe adopts a rolling manner of a roll idler wheel so that the scanning stability is guaranteed. A water inlet hole 6 is adjacent to the probe so as to guarantee the water coupling effect.

The invention relates to a micro-water-column guiding laser micromachining device, which comprises a supporting sleeve, a water tank, a nozzle and an optical focusing lens. The optical focusing lens is mounted in the supporting sleeve horizontally through a lens mount, and the lens mount is connected with a nozzle orifice center regulating mechanism in the Z direction. The water tank is mounted at the lower end opening of the supporting sleeve, and is connected with a high-pressure water system through a water inlet pipe joint. A quartz window is arranged in the middle of the top end of the water tank and faces the center of the lower end opening of the supporting sleeve, the nozzle is arranged in the middle of the bottom end of the water tank, and the focusing point of the optical focusing lens is located at the orifice center of the nozzle. The water tank is also connected with nozzle orifice center regulating mechanisms in the horizontal X direction and the Y direction. The micro-water-column guiding laser micromachining device is provided with the regulating mechanisms for coupling alignment of laser in the horizontal direction and the longitudinal direction, and accordingly three-dimension relative positions of the laser focal spot and the nozzle orifice center can be regulated accurately, and coupling effect of the focusing lens and optical fibers in water stream during water guiding laser micromachining is guaranteed.

A soft chemical method for in-situ preparing powder with ferroelectric and ferromagnetic composite materials is carried out by adding ferrite metal nitrate and ferroelectric metal nitrate into citric acid solution, heating, stirring, adding into ferroelectric metal alkoxide, adjusting pH value, obtaining homogeneous and stable sol, preparing powder, drying the obtained precursor, baking, burning and heat treating the burnt powder to obtain the final powder. It is cheap and simple, and has better chemical evenness, high purity and fine particles.

The invention discloses a recovery type on-site sound emission sensor, which comprises a sound emission probe, a probe installation mechanism, and a delivery mechanism for delivering a combination body of the sound emission probe and the probe installation mechanism to a setting position in a drill hole of a rock mass to be monitored. The probe installation mechanism comprises a shell, a probe sleeve, spring sleeves, springs and a fixed pulley assembly; the probe sleeve is installed in a shell guiding cylinder; the spring sleeves are fixed to two sides of the probe sleeve; the springs are installed in the spring sleeves; one end of a first rope in the fixed pulley assembly is fixedly connected with an end cover on the upper end face of the probe sleeve through a fixed pulley arranged on the top part of the inner wall of the shell. According to the recovery type on-site sound emission sensor provided by the invention, through interaction of the first rope and the springs arranged between the shell and the probe sleeve, a movement direction of the probe sleeve can be controlled, and the effects of effective installation and coupling of the sound emission probe are realized; the effective coupling of the sound emission probe and a drill hole wall is ensured, and the mine rock (body) stability and rock burst dynamic disaster monitoring and predicting reliability are improved.

The invention discloses a GPU (graphics processing unit) acceleration based real-time hybrid particle blood flow-blood vessel coupling method. According to the method, a Casson equation is solved in a discretized mode by an SPH (smoothed particle hydrodynamics) method, and further non-Newtonian viscosity force of blood is solved; a layer of surrogate particles are sampled on the blood vessel wall by referring to a classical surrogate particle based boundary processing method in graphics, and coupling force applicable to the surrogate particles and blood particles is defined; the surrogate particles and the blood particles are merged into hybrid particles, and acting force between each pair of mutually neighboring hybrid particles is calculated uniformly in a GPU so as to realize blood flow-blood vessel coupling; force data of the surrogate particles are mapped to colors of the surrogate particles for display to realize blood vessel force visualization. By the viscosity force solving method, authenticity in blood modeling is enhanced, the coupling method is quick and effective, authenticity and real-time performance in coupling are guaranteed, the force visualization method is simple and direct, and rich information about blood vessel wall force distribution is provided.

The invention provides a method for managing progresses at an application layer and a managing system. The invention is applicable to complex application function demand of an Ethernet passive optical network (EPON) network terminal device and the like. Every function is corresponding to one progress; and the method is applied to the application scene with relatively high coupling degree among a plurality of functions. The method and the system are born on an embedding work system, thereby the reliability, the stability, the contingency, the maneuverability and the modularization of every function of the embedding work system can be guaranteed.

The invention belongs to the related technical field of material structure optimization, and discloses a dynamic integrated design method for multiple porous material structures. The method comprisesthe following steps of (1) carrying out initialization partitioning on a macrostructure design domain of a to-be-designed material structure to form subareas of a macrostructure, and enabling different subareas to be formed by periodically arranging multiple porous material microstructures with different functions; (2) aiming at the macrostructure and the microstructure, constructing a dynamic integrated design model oriented to multiple porous material structures, determining equivalent material attributes of the microstructure in the macroscopic partition, and further obtaining a macroscopicdisplacement field of the macrostructure; and then, based on the macro displacement field, solving an objective function of the dynamic integrated design model, determining design sensitivity, updating macro design variables and micro design variables, and further determining the optimal macro structure and micro structure. According to the method, the calculation cost and the material design variable are reduced, and the structural performance is improved.

The invention discloses a device for measuring the thickness of any point of a free-form surface and a measuring method thereof. The device comprises an ultrasonic thickness measurement main body structure, a buffer connection structure and a coupling agent supply structure. The ultrasonic thickness measurement main body structure is used for probe angle self-adaptive adjustment and probe and workpiece contact force measurement so that a measurement axis and a vector normal of a workpiece contact point are self-adaptive coincident and stable in contact; the buffer connection structure is usedfor guaranteeing coaxial connection between the thickness measurement main body structure and the tail end of an external movement mechanism and has buffer and guide effects at the same time; and thecoupling agent supply line ensures stable coupling of the probe and the workpiece. The device can solve the problem of automatic detection of the thickness of a thin-wall complex curved surface workpiece and can be installed at the tail end of the movement mechanism to achieve automatic detection of the thickness of the free curved surface workpiece and can also be installed at the tail end of a numerical control machine tool handle to achieve on-machine measurement to obtain the wall thickness of a part blank or the residual wall thickness distribution state in machining.

The invention discloses a high-coupling in-hole seismic wave receiving device fast to install and recover. The device comprises a gas storage bottle, wherein an air inlet-and-outlet port end of the gas storage bottle is connected with an air inflation-deflation faucet, the outer side of the gas storage bottle is provided with a gas storage bottle protective rubber cylinder, the two ends of the gasstorage bottle protective rubber cylinder are fixedly provided with a jacking plug and a connecting plug respectively, and the connecting plug is connected with one end of a detector airbag inflationrubber cylinder; the inflation rubber cylinder is internally provided with a seismic wave sensor, the outer side of the inflation rubber cylinder is correspondingly provided with a vibration conduction metal sheet, and the seismic wave sensor and the vibration conduction metal sheet are sealed and fixed on the inflation rubber cylinder through fixing screws; the other end of the inflation rubbercylinder is connected with a bottom end sealing plug; the bottom end sealing plug, the inflation rubber cylinder and the connecting plug form a sealed detector airbag; the gas storage bottle is communicated with the detector airbag through a gas guide tube, the jacking plug is provided with a gas guide button hole, a data transmission interface hole and a device handle, and the seismic wave sensoris connected with a data transmission interface in the data transmission interface hole through a data transmission line. The invention also discloses a detection method.

The invention discloses a hydraulic control system for a microwave heating asphalt pavement hot in-place recycling device. The hot in-place recycling device comprises a main frame, a space adjusting device and heating devices. Universal wheels with locks are arranged on the bottom of the main frame, the space adjusting device comprises three independent sets of three-way electric- drive adjustmentstructures, and each set of the three-way electric-drive adjustment structures is connected with a set of heating devices. The hydraulic control system uses a hydraulic pump as the power source and adopts the hydraulic control system to realize the movement control of heating cavities along X axis, Y axis and z axis, the artificial cumbersome operation is simplified, and the labor intensity of workers is reduced; and at the same time, the influence of experience and physical strength on the microwave heating effect during manual adjustment of the heating cavities is avoided, the same horizontal plane is always maintained between different heating cavity opening faces, and it is ensured that the coupling effect can be always optimal.

The invention discloses a corrosion monitoring system and method based on two-dimensional flexible area array piezoelectric ultrasound, and relates to the technical field of petroleum and natural gas and ship pipeline corrosion monitoring, and the system comprises a piezoelectric ultrasonic sensing unit, a monitoring terminal and a control calculation center; the piezoelectric ultrasonic sensing unit adopts a two-dimensional flexible area array piezoelectric ultrasonic sensor, the sensor comprises a flexible thin film material and a piezoelectric transduction element, the piezoelectric transduction element is directly embedded in the flexible thin film material, and the thin film material serves as a coupling agent of the piezoelectric transduction element; the piezoelectric ultrasonic sensor is compressed through a self-adaptive flexible air bag pre-tightening structure, an air bag is fixed in a ribbon mode, an inflation hole is formed in one side of the air bag, and after the sensor is fixed, certain gas or liquid is applied into the air bag so as to meet the requirement for applying load to a dry coupling model interface. The flexible array probe is directly coupled with the surface of the pipeline, a pre-tightening structure is adopted, the air bag is tightly attached to the pipeline, signals with the very high signal-to-noise ratio are obtained, and the measurement result is more accurate.

The invention discloses an acoustic emission monitoring system comprising an acoustic emission sensor and a ground work station. The acoustic emission sensor is used for being mounted in a borehole of a monitored rock body and is composed of an acoustic emission probe, a probe mounting mechanism and a transmission mechanism for transmitting the mounting mechanism on which the acoustic emission probe is mounted to a preset position in the borehole. The probe mounting mechanism of the acoustic emission monitoring system of the invention solves the problem of effective installation and coupling of the acoustic emission sensor through the pluggable connection and cooperation between a second cover plate of a guide assembly and an upper end cap of a probe sleeve, not only facilitating acoustic emission probe transmission, but also ensuring the coupling effect between the acoustic emission probe and a borehole wall, thereby enhancing the monitoring and forecast reliability of the rock (body) engineering stability and rock burst dynamic disasters. In addition, the system can also achieve usage of multiple acoustic emission probes at the same time, with a wider range of applications.

The invention discloses an acoustic emission sensor which comprises an acoustic emission probe, a probe installation mechanism and a transmitting mechanism, wherein the acoustic emission probe is arranged in a probe sleeve, and the acoustic emission probe is in clearance fit with an inner wall of the probe sleeve; a first spring and second springs are arranged between a shell and the probe sleeve; the first spring is arranged in a frame body of the shell, and the first spring is fixedly connected with an end cover on the probe sleeve, and is in a tension state or free state; the two second springs respectively sleeve guide rods in two spring sleeves, and the two second springs are in contact with stopping plates arranged in inner holes of the spring sleeves, and are in a compressed state. According to the acoustic emission sensor disclosed by the invention, the probe installation mechanism solves the problem that an acoustic emission probe cannot be effectively installed and coupled through controllable extension and retraction of the first spring and the second springs which are arranged between the shell and the probe sleeve; thus, reliability of monitoring and predicting mine rock (body) stability and rock burst dynamic disasters is enhanced.

The invention discloses a multistage microseism digital well geophone device, which comprises a ground control unit, a cable, a torpedo connector and a plurality of stages of digital well geophones, and is characterized in that each stage of digital well geophone comprises a pushing driving assembly, a pushing action assembly and an electronic instrument assembly. The ground control unit is used for supplying power to the multi-stage digital in-well detector, sending a control command to each stage of in-well detector, and storing data acquired by each stage of in-well detector. The cable is a link for power supply, communication and interaction between a ground control unit and a multi-stage digital well geophone. The torpedo connector is used for cooperating with a cable and connecting each stage of digital in-well detectors. The multi-stage digital in-well detector is mainly responsible for microseismic signal acquisition and transmission. Each stage of digital well geophone comprises a pushing driving assembly and a pushing action assembly. The pushing structure has the advantages of being stable, reliable, simple in structure, accurate in action, wide in application range and convenient and fast to install and maintain.

The invention discloses a pre-wetting device for automatic ultrasonic detection. A collecting tank of the pre-wetting device is arranged on the top face of a base, a bottom plate is located in the collecting tank, and bolts penetrate through the bottom plate and the collecting tank to fix the bottom plate to the top face of the base. A box is arranged on the top face of the bottom plate through bolts, an opening is formed in the bottom face of the box and communicated with the collecting tank, through holes are formed in the top face, the front face and the back face of the box respectively, the through hole in the top face of the box is connected with a stop valve, a fluid control valve and a quick connector in sequence through a pipeline, an annular pressing plate, an annular sealing plate and a scraping plate are arranged in the through holes in the front face and the back face of the box respectively in sequence, an annular channel coaxial with the through holes in the front face and the back face of the box is formed in the box, a plurality of nozzles are arranged on the inner ring of the annular channel at intervals, and the input ends of the nozzles are communicated with the pipeline connected with the through hole in the top face of the box. The pre-wetting device can effectively scrap off impurities on the surface of a workpiece, prevent foreign matter from entering precise detection equipment and prolong the service life of the detection equipment; the pre-wetting device can pre-wet the detected workpiece, guarantee the coupling effect and improve detection precision.

The invention discloses an acoustic sensor for monitoring rock burst. The acoustic sensor comprises an acoustic emission probe, a probe installation mechanism and a transmission mechanism, wherein the transmission mechanism is used for a combination body of the acoustic emission probe and the probe installation mechanism to a set position in a drilling hole of a to-be-monitored rock body; the probe installation mechanism is mainly formed by a sleeve assembly, a guiding assembly, an end cover and a spring; the guiding assembly is in pluggable connection with the sleeve assembly or the end cover; the assembled probe installation mechanism is used for locking the acoustic emission probe in a probe sleeve of the sleeve assembly; the spring in an elastic sleeve of the sleeve assembly is in a compression state. According to the acoustic sensor for monitoring rock burst, disclosed by the invention, through pluggable connection and matching between the guiding assembly and the sleeve assembly or the end cover and by utilizing the action of an elastic restoring force of the spring, the control to a movement direction of the guiding assembly and a probe assembly is realized, so that the problem of effective installing and coupling of the acoustic emission probe is solved, and not only can the acoustic emission probe be conveniently transmitted, but also the coupling effect of the acoustic emission probe and the wall of the drilling hole can be ensured.

The invention provides a microstrip coupler and a PCB. The microstrip coupler comprises a wire laying layer and an etching layer laminated correspondingly, the wire laying layer is used to lay microstrip wires and forms an interdigital part, the etching layer is used to etch a defect area, the defect area is partially overlapped with the interdigital part, the defect area changes electric field and magnetic field distribution of the etching layer as well as the distribution inductance and capacitance of the microstrip wires laid on the wire laying layer laminated corresponding to the etching layer, so that the microstrip wires have band cap and slow wave characteristics, further the coupling intensity of the microstrip wires in the unit distance is increased, basis is provided for increasing the distance between the microstrip wires, and the production cost of the microstrip coupler is reduced under the condition that the coupling performance of the microstrip coupler is ensured.

The invention belongs to the field of an ultrasonic detection technology in nondestructive testing and particularly relates to an ultrasonic probe clamp. Aiming to solve the problems in the prior art, the invention provides the ultrasonic probe clamp which is applicable to various sizes of probe outer diameters in a range of 12-24mm, is stable to clamp, is stable to scan and is good in coupling. The ultrasonic probe clamp is characterized in that a base (3) is in an annular structure with annular lug bosses at inner and outer sides; a supporting block (2) is in an arc-shaped structure with a lug boss at the lower part; a thread at the bottom of the lug boss of the supporting block (2) is engaged with a thread on the top of an outer side part of the inner side lug loss of the lug bosses of the base (3); a clamp inner ring (4) is mounted on a groove of an inner side part of the inner side lug loss of the base (3). According to the ultrasonic probe clamp, the supporting block 2, the clamp inner ring 4 and the base 3 are adopted; the relative central position of the supporting block 2 can be changed through rotating the clamp inner ring 4, so that a probe can be clamped to randomly adjust the diameter in a range of 12-24mm. The movement of the probe adopts a rolling manner of a roll idler wheel so that the scanning stability is guaranteed. A water inlet hole 6 is adjacent to the probe so as to guarantee the water coupling effect.

The invention discloses a curved-surface self-coupling automatic flaw detector for explosive welding. The curved-surface self-coupling automatic flaw detector is provided with a flaw detection pool, a coupling probe and analyzers. Sliding rails are arranged at the two sides of the flaw detection pool, the analyzers slide on the sliding rails, and the bottom of a rotary rod is connected with the coupling probe. The coupling probe is provided with a plurality of independent probe telescopic air cylinders, a sub-probe is arranged in each probe telescopic air cylinder, and a clearance exists between every two adjacent probe telescopic air cylinders. A water injector is arranged on the upper portions of the probe telescopic air cylinders, and the clearance between every two adjacent probe telescopic air cylinders is communicated with the water injector. The curved-surface self-coupling automatic flaw detector has the advantages that the height of the small probes can be automatically adjusted through the probe of the self-coupling flaw detector according to the curved surface, coupling on the whole curved surface is guaranteed, a rotary joint of the probe can rotate by any angle to guarantee the proper flaw detection angle, the precise reliability of an ultrasonic nondestructive inspection explosive welding composite plate is greatly improved through the automatic flaw detector, and production efficiency is improved.

The invention discloses a curved-surface self-coupling automatic flaw detector for explosive welding. The curved-surface self-coupling automatic flaw detector is provided with a flaw detection pool, a coupling probe and analyzers. Sliding rails are arranged at the two sides of the flaw detection pool, the analyzers slide on the sliding rails, and the bottom of a rotary rod is connected with the coupling probe. The coupling probe is provided with a plurality of independent probe telescopic air cylinders, a sub-probe is arranged in each probe telescopic air cylinder, and a clearance exists between every two adjacent probe telescopic air cylinders. A water injector is arranged on the upper portions of the probe telescopic air cylinders, and the clearance between every two adjacent probe telescopic air cylinders is communicated with the water injector. The curved-surface self-coupling automatic flaw detector has the advantages that the height of the small probes can be automatically adjusted through the probe of the self-coupling flaw detector according to the curved surface, coupling on the whole curved surface is guaranteed, a rotary joint of the probe can rotate by any angle to guarantee the proper flaw detection angle, the precise reliability of an ultrasonic nondestructive inspection explosive welding composite plate is greatly improved through the automatic flaw detector, and production efficiency is improved.

The invention discloses a swing laser-CMT hybrid welding method, and relates to the field of material machining engineering. According to the swing laser-CMT hybrid welding method, the stability of alaser keyhole and an electric arc and the stability of globular transfer in the laser-CMT hybrid welding process are improved, and the problems that defects are generated in the welding process, and the depth of fusion is decreased are solved; hybrid welding is conducted by using a swing laser and the CMT electric arc, the laser needs to conduct reciprocating rectilinear movement or circular arc movement and the like front and back in the welding direction, a CMT welding state is detected by adopting current and voltage detection equipment, the CMT welding state is analyzed by using LabVIEW software, a laser head is controlled to enable the laser to be matched with the CMT electric arc to conduct swinging, the laser is controlled to swing forwards accordingly in the welding wire forward feeding-in process, the laser is prevented from being blocked by a welding wire, and thus an air hole defect is prevented from being caused; and when the short-circuit process comes to an end and the welding wire is drawn back, the laser is controlled to swing backwards, the distance between the welding wire and the laser shortened, and a coupling effect is prevented from disappearing due to the toolong distance after arc starting.

The invention discloses an engineering rock mass acoustic emission monitoring and transmission system, which includes an acoustic emission sensor and a ground workstation. The acoustic emission sensor is installed in a borehole of the rock mass to be monitored, and the received monitoring signal is transmitted to the ground through a cable. In the workstation, the acoustic emission sensor is composed of an acoustic emission probe, a probe installation mechanism and a transmission mechanism that transmits the probe installation mechanism installed with the acoustic emission probe to a set position in the borehole. The probe installation mechanism includes a housing connected to the transmission mechanism and is used for Probe sleeve to accommodate acoustic emission probes. The probe installation mechanism in the engineering rock mass acoustic emission monitoring and transmission system of the present invention solves the problem of effective installation and coupling of the acoustic emission probe through the mutual cooperation of the air bag and the spring arranged between the shell and the probe sleeve, ensuring that the acoustic emission The effective coupling between the transmitting probe and the wall of the borehole enhances the reliability of monitoring and forecasting of the stability of the mine rock (body) and rockburst dynamic disasters.

The invention discloses a stress detection method which is used for a stress detection system. The stress detection system comprises a computer, a single-chip microcomputer, a signal generator, a pre-gain amplifier, a power amplifier and a magnet yoke detector which are electrically connected in sequence, wherein the magnet yoke detector can generate an excitation signal. The detection method comprises the following steps: inputting a regulation and control function in the single-chip microcomputer; inputting a preset magnetization direction angle variable quantity and magnetic flux measured by the magnet yoke detector into the computer so as to regulate and control the pre-gain amplification factor of the excitation signal; placing the magnet yoke detector on the surface of the aviation liquid pressure pipeline and carrying out pressing measurement to obtain a detection signal; inputting the root mean square of the detection signal into a preset function in the computer to obtain a relative anisotropy and stress distribution function. The method has the advantages that the method can be suitable for stress detection of the aviation liquid pressure pipeline, and the internal stress distribution condition can be accurately mastered.

The invention discloses an acoustic emission monitoring system comprising an acoustic emission sensor and a ground work station. The acoustic emission sensor is used for being mounted in a borehole of a monitored rock body and is composed of an acoustic emission probe, a probe mounting mechanism and a transmission mechanism for transmitting the mounting mechanism on which the acoustic emission probe is mounted to a preset position in the borehole. The probe mounting mechanism of the acoustic emission monitoring system of the invention solves the problem of effective installation and coupling of the acoustic emission sensor through the pluggable connection and cooperation between a second cover plate of a guide assembly and an upper end cap of a probe sleeve, not only facilitating acoustic emission probe transmission, but also ensuring the coupling effect between the acoustic emission probe and a borehole wall, thereby enhancing the monitoring and forecast reliability of the rock (body) engineering stability and rock burst dynamic disasters. In addition, the system can also achieve usage of multiple acoustic emission probes at the same time, with a wider range of applications.

The invention discloses an acoustic emission sensor which comprises an acoustic emission probe, a probe installation mechanism and a transmitting mechanism, wherein the acoustic emission probe is arranged in a probe sleeve, and the acoustic emission probe is in clearance fit with an inner wall of the probe sleeve; a first spring and second springs are arranged between a shell and the probe sleeve; the first spring is arranged in a frame body of the shell, and the first spring is fixedly connected with an end cover on the probe sleeve, and is in a tension state or free state; the two second springs respectively sleeve guide rods in two spring sleeves, and the two second springs are in contact with stopping plates arranged in inner holes of the spring sleeves, and are in a compressed state. According to the acoustic emission sensor disclosed by the invention, the probe installation mechanism solves the problem that an acoustic emission probe cannot be effectively installed and coupled through controllable extension and retraction of the first spring and the second springs which are arranged between the shell and the probe sleeve; thus, reliability of monitoring and predicting mine rock (body) stability and rock burst dynamic disasters is enhanced.

The invention discloses a rigid clamp for ultrasonic guided wave testing of various pipe diameters. The rigid clamp comprises an annular groove body, a plurality of sets of probes are uniformly distributed on an inner hole of the annular groove body through corresponding probe locating devices, and a probe floating supporting device is arranged between the probe locating devices and the inner sides of half-round groove bodies. Lemo connectors of the probes are fixedly connected to Lemo connector bases fixed to end plates of one ends of the half-round groove bodies through connection cables. A use method of the rigid clamp includes the steps of 1, adjusting the elastic force of compressed springs; 2, rotating a radial position adjusting sleeve of each probe to attach the probes to pipelines at zero pressure; and 3, fixedly connecting the two half-round groove bodies into a whole. According to the rigid clamp and the use method, the pressing force of the probes on the tested pipelines can be maintained within an appropriate range, large contact areas between the probes and the tested pipelines can be guaranteed, moderate attaching pressure can be maintained, and therefore the coupling property can be guaranteed, and testing requirements of the pipelines with different pipe diameters can be met. The working reliability of the probes is improved.