434 results about "Radial displacement" patented technology

The invention particularly relates to a grinding force closed-loop control and flutter suppression system for crankshaft variable stiffness machining, and aims to solve the problems of unstable grinding force, flutter and surface defects caused by time-varying stiffness characteristics of a crankshaft due to a multi-crank throw and cantilever supporting structure. The system comprises a grinding force detection module, a control module and an execution module. The grinding force detection module is arranged in a grinding wheel and crankshaft contact area and collects grinding force signals in real time. The control module receives an actual grinding force signal, compares the actual grinding force signal with a target value, and outputs a compensation instruction and a suppression instruction; the compensation instruction is generated by adopting a self-adaptive PID or fuzzy PID algorithm based on force deviation, and the grinding wheel feeding speed or the main shaft rotating speed is dynamically adjusted to stabilize the grinding force; and extracting a high-frequency component of the force signal as a flutter feature, identifying a flutter bud through time-frequency analysis, and generating an anti-phase displacement instruction to suppress flutter. The execution module adjusts feeding or rotating speed according to the compensation instruction and adjusts radial displacement of the crankshaft or the grinding wheel according to the suppression instruction.

The invention provides a wafer back surface and edge detection device which comprises a base, and a rotary lifting module, a clamping lifting module, a motion direction conversion module and a visual detection module which are mounted on the base, the rotary lifting module comprises a rotary mechanism and a lifting mechanism; a supporting part for placing a wafer is arranged in the lifting mechanism, and the lifting mechanism is configured to jack the wafer up / down to a working position; the rotating mechanism is configured to provide a circumferential direction movement trend for the movement direction conversion module; the motion direction conversion module is arranged above the rotary lifting module and the clamping lifting module, and is driven by the clamping lifting module to realize displacement in the vertical direction, and the lifting motion of the clamping lifting module is converted into radial displacement of the motion direction conversion module; and the visual detection module comprises a camera unit, the camera unit faces the wafer, and the visual detection module is configured to perform image acquisition and detection on the wafer.

The invention relates to the technical field of maglev motor dynamics and control, and discloses a bearingless asynchronous motor multi-frequency harmonic vibration cooperative suppression method, which comprises the following steps: acquiring radial displacement signals and mechanical angular velocity of a rotor in an x axis and a y axis under a stator fixed coordinate system, and stacking double-axis displacement signals into an observation vector; calculating a weighting coefficient of the normalized residual error through a Huber robust cost function, and outputting the amplitude, the phase and the confidence of each order of harmonic wave; estimating the total disturbance of the system by using a linear extended state observer with harmonic energy injection, wherein the total disturbance is obtained by weighted summation according to the confidence, order and mechanical angular velocity of each order of harmonic; calculating a feedback control force according to the total disturbance estimated value, and superposing the feedforward compensation force and the feedback control force to generate a total suspension force instruction; and according to the total suspension force instruction, inversely calculating a suspension winding current reference value and outputting a control instruction. According to the invention, a mutually complementary cooperative suppression mechanism is formed, and the suppression precision of multi-frequency vibration is improved.

The invention discloses a flexible riser vibration response characteristic analysis method, and relates to the technical field of ocean engineering. According to the method, a flexible riser vibration model is established based on a vibration theoretical model and a fluid control equation for vibration analysis, a theoretical time domain response curve of the flexible riser is obtained through MATLAB calculation, and then a flexible riser three-dimensional simulation model is established in an ANSYS Workbench integrated simulation platform. According to the method, a flexible riser three-dimensional simulation model is constructed, material constitutive parameters, boundary conditions and load application of the flexible riser three-dimensional simulation model are configured, then simulation is performed in an ANSYS Workbench integrated simulation platform by using the flexible riser three-dimensional simulation model, bidirectional fluid-solid coupling analysis is performed by coupling a Fluent flow field system and a Transient Stratum module, the radial displacement time history of the flexible riser under a preset working condition is obtained, and the radial displacement time history of the flexible riser under the preset working condition is calculated. And extracting resonance characteristics of the flexible riser. According to the method, the vibration response characteristics of the deep-sea flexible riser under the influence of internal and external fluids in the service process are accurately obtained, and a foundation is laid for guiding the structural stability of a deep-sea operation system.

The invention relates to the technical field of nickel alloy pipe water pressure detection, and discloses a thin-wall nickel alloy pipe inner wall water pressure test detection system and method. The method comprises the steps that a closed water pressure environment is established in a pipe, a preset pressure gradient is applied, and pipe wall deformation response data are collected through a distributed sensing array; and generating a composite feature matrix containing axial strain, circumferential stress and radial displacement features through multi-dimensional feature extraction, inputting the composite feature matrix into a material performance degradation evaluation model, and simulating microstructure change to output a potential defect distribution map. Dynamically adjusting the water pressure gradient and the pressure maintaining time according to the map, executing a secondary water pressure test, and capturing a microscopic deformation sequence image through high-frequency imaging; comparing the image with a model prediction result identification deviation value, and iteratively updating a model parameter to optimize a detection threshold value; the test is completed by optimizing the threshold value, qualified pipe section marks and defective pipe section positioning coordinates are output, and the comprehensiveness and accuracy of thin-wall nickel alloy pipe inner wall defect detection are improved.

The invention relates to the technical field of nuclear fusion, and provides a supporting structure and a nuclear fusion device. The supporting structure comprises a first connecting assembly, a second connecting assembly, a first supporting assembly and a second supporting assembly. The first connecting assembly is connected with a lower window of the vacuum chamber; the second connecting assembly is connected with the fixed foundation; the first supporting assembly is supported between the first connecting assembly and the second connecting assembly, the first supporting assembly comprises two sets of hinge structures, and the two sets of hinge structures are arranged side by side in the radial direction of the vacuum chamber and are configured into different specifications; the second supporting assembly is supported between the first connecting assembly and the second connecting assembly and comprises two sets of elastic plate arrays, and the two sets of elastic plate arrays are arranged on the two sides of the first supporting assembly in the radial direction of the vacuum chamber. The supporting structure disclosed by the invention not only can stably bear the load of the vacuum chamber in the vertical direction, but also allows the vacuum chamber to generate smaller radial displacement due to baking, and can play a role in stably supporting the vacuum chamber.

The invention provides a winding type integrated forming method for a prefabricated small box girder reinforcing steel bar component. The winding type integrated forming method comprises the steps that S1, the structural design of the reinforcing steel bar component is conducted; S2, equipment arrangement is conducted; s3, longitudinal bar material distribution in inner bar manufacturing; s4, inner rib winding manufacturing; s5, mounting a corrugated pipe; S6, manufacturing outer ribs; s7, assembling the steel bar component; and S8, forming the reinforcing steel bar component. The inner ribs and the outer ribs of the whole structure are integrally formed in a winding mode, a double-layer closed-loop combined longitudinal rib connection three-dimensional structure is formed, the structure is closed, the compressive strength of a component can be improved, and the local collapse risk is avoided. The longitudinally-wound steel bars can restrain radial deviation of the longitudinal bars, and the stability is improved by being matched with supporting of the inner bars. When the inner rib and the outer rib are welded, the longitudinal ribs are stretched while rotating, the longitudinally wound steel bars are welded with the longitudinal ribs, point-by-point welding is not needed, only the wound steel bars are welded with the longitudinal ribs, and compared with closed stirrups manufactured in an existing manufacturing mode, the welding workload is greatly reduced, and meanwhile strength loss caused by welding breakpoints is avoided.

The invention provides a dense pre-support structure thin shell mechanical modeling method, and relates to the technical field of tunnel engineering soft stratum pre-support structure mechanical modeling, and the method comprises the steps: calculating the equivalent stiffness of a pipe shed-jet grouting pile composite layer based on a Voigt theory; establishing a continuous thin shell model taking the control equation as a core; constructing a plastic / elastic disturbance partition in front of the tunnel face and a four-section type boundary condition of a supporting structure through a Pasternak foundation model; and solving the constructed continuous thin shell mechanical model through a finite difference method to obtain radial displacement, and completing mechanical modeling of the tunnel engineering soft stratum pre-supporting structure. The continuous thin shell model designed by the invention can provide high-reliability theoretical support for tunnel pre-support design.

The utility model discloses a photoelectric platform stabilizing device, the utility model relates to photoelectric platform technical field, including base, the middle part fixedly connected with fixed block in the base inner wall, the fixed block inner wall fixedly connected with first motor, the output end transmission of first motor has the rotary disc, the upper surface fixedly connected with stabilizing device of rotary disc. This photoelectric platform stabilizing device, through setting stabilizing device, positive and negative toothed rod cooperation limiting rod drive clamping stable frame synchronous relative motion can realize even clamping to different size photoelectric equipment, avoid equipment to shake, the cover plate further prevents equipment from falling off, ensure that the equipment is fixed in the position in the working process, when the first motor drives the rotary disc to rotate, the limiting ring on fixed plate and the limiting block under rotary disc accurate adaptation, limit the radial displacement of rotary disc, reduce the shake, guarantee the stability when azimuth adjustment.

The invention relates to a double-station welding robot which comprises a robot unit and a workpiece fixing unit and is used for welding a pipeline and flange plates at the two ends. Two welding devices are arranged on a connecting plate of the robot unit at intervals, a fixed rack and a movable rack of the workpiece fixing unit are each provided with a claw disc assembly, a double-station clamping structure is formed, two sets of workpieces can be synchronously clamped and welded, waiting for completion of a single set is not needed, and the idle time and the production period of equipment are greatly shortened. The movable rack can slide along the linear sliding table seat to adapt to pipelines with different lengths, so that the operation continuity is guaranteed; the clamping assembly is of a double-positioning structure of an inner diameter supporting block and an outer diameter pressing block, three sets of grippers are evenly distributed along the circumference of a claw disc, the driving device can drive the supporting block to externally support the inner wall of a pipeline and drive the pressing block to internally press the outer wall of a flange disc, a workpiece is synchronously positioned and fixed, radial displacement and circumferential rotation are effectively limited, and coaxiality and assembly precision are guaranteed. Welding defects caused by loose clamping are avoided, the quality and the qualified rate of joints are improved, and it is ensured that workpieces meet the sealing and strength requirements.

The utility model discloses a plunger adjusting assembly and a plunger pump, and relates to the technical field of plungers. According to the main technical scheme, a mounting groove is formed in a sliding block; the boss structure is attached to the bottom of the mounting groove, a first gap is formed between the boss structure and the wall of the mounting groove, and the first gap is used for reserving a space for the boss structure to move in the radial direction of the mounting groove; the plunger rod is connected to the end, away from the bottom of the mounting groove, of the boss structure. The plunger rod is sleeved with the pressing piece, a second gap is formed between the pressing piece and the plunger rod, and the second gap is used for reserving a space for the plunger rod to move in the radial direction of the pressing piece; the pressing piece is connected to the sliding block and attached to the boss structure. The purposes of adjusting the coaxiality of the plunger rod and the cylinder body, reducing the abrasion risk of the plunger rod, prolonging the service life of the plunger rod and improving the normal use probability of the plunger pump are expected to be achieved. And meanwhile, in the displacement process of the plunger rod, the coaxiality between the plunger rod and the sliding block is effectively ensured, and then the aims of reducing the risks of inclination, bending, breakage and abrasion of the plunger rod are achieved.

The invention provides a device for removing a friction welding seam of a pipe fitting, and belongs to the technical field of metal pipe machining, the device comprises a workbench and a positioning mechanism arranged in the middle of the workbench, and the positioning mechanism is used for bearing and positioning a metal pipe; two punching bases which are symmetrically arranged left and right are transversely and slidably connected to the workbench, first air cylinders used for driving the punching bases to transversely move are arranged at the left end and the right end of the workbench correspondingly, annular punches are arranged on the opposite inner side faces of the two punching bases correspondingly, and cutter supporting rings are rotationally connected to the interiors of the two punching bases correspondingly. A cutter supporting ring is arranged on the punching base, a plurality of cutters are slidably connected to the cutter supporting ring in the radial direction, a cutter feeding assembly used for driving the cutters to move in the radial direction of the cutter supporting ring is arranged between the punching base and the cutter supporting ring, and a driving piece is arranged on the punching base and can drive the cutter supporting ring and the cutters to rotate and complete the annular cutting action on the metal pipe; the possibility that the surface quality of the metal pipe is damaged in the weld joint removing process can be reduced.

This invention relates to the field of gearbox testing technology, specifically disclosing a reliability testing device and method for a wind turbine yaw gearbox. The device includes a connecting mechanism, with a first testing mechanism and a second testing mechanism arranged on the outer side of the connecting mechanism to simulate the swaying and pushing of wind turbine blades. The invention uses the first testing mechanism, arranged in a ring array, to apply force to the rotating shaft radially, causing radial displacement of the shaft. This simulates the force exerted by the wind turbine blades on the gearbox when subjected to lateral wind force, closely reflecting the actual stress conditions of the wind turbine gearbox and improving the realism of the test. This facilitates a more thorough testing of the wind turbine gearbox's reliability. The second testing mechanism simulates the force exerted by the wind turbine blades on the gearbox when subjected to direct wind force, further improving the realism of the test.

The invention discloses an aluminum alloy grain refinement production device and method, and relates to the technical field of aluminum alloy machining, the aluminum alloy grain refinement production device comprises a case, a right wire frame fixed at the right side position in the case, an unwinding shaft rotatably mounted in the right wire frame, and a Z-axis wire pressing stabilizing mechanism mounted in the right wire frame above the unwinding shaft; a Z-axis wire supporting mechanism is installed in the machine box on the left side of the unwinding shaft, and a wire feeding disc is installed at one end of the surface of the unwinding shaft in a bolted mode. According to the device, the unwinding shaft fixing mechanism, the wire pressing stabilizing mechanism, the wire supporting and supporting mechanism, the multiple lifting assemblies and the double-shaft straightening structure are reasonably arranged, a synchronous driving mechanism is combined, the radial displacement problem of the aluminum-titanium-boron grain refining wire in the wire feeding process is solved, preheating and heating uniformity and activity release of a grain refiner are guaranteed, and the yield of the aluminum-titanium-boron grain refining wire is improved. And the dispersion effect of the grain refiner in the molten aluminum is also improved, and finally refining and performance improvement of cast ingot structures are promoted.

This utility model proposes a coaxial adjustment structure for a five-axis rotary table, comprising: a swing arm assembly rotatably connected to the middle working end; a support structure for the rotating shafts on both sides of the swing arm assembly; and clearance adjustment components circumferentially distributed on the mating surfaces of the mounting housing and the rotating shafts. Each clearance adjustment component includes at least two radially displaceable top-fitting adjustment mechanisms. Each top-fitting adjustment mechanism includes an adjustment channel penetrating the mounting housing and a top-fitting mechanism. The working end face of the top-fitting mechanism contacts the outer surface of the rotating shaft. By changing the axial displacement of the top-fitting mechanism, the radial mating clearance between the rotating shaft and the mounting housing is altered, making the swing arm assemblies on both sides of the middle working end concentric. This circumferential multi-point coordinated adjustment mechanism improves the coaxiality adjustment accuracy to ±0.002mm, effectively controlling radial runout at the working end. Through the standardized adjustment channel and top-fitting mechanism design, a single person can complete the clearance reset within minutes, making it particularly suitable for rapid calibration during mass production.

The utility model provides a pipe clamping device which comprises the components of a support which is provided with a clamping groove, the width of the clamping groove from a groove opening to a groove bottom is gradually reduced, and the clamping groove is used for placing a pipeline; and the pressing rod assembly is movably installed on the support, a pressing block is arranged on the pressing rod assembly, and the pressing rod assembly can be adjusted and fixed to the position where the pressing block tightly presses the pipeline in the clamping groove in the vertical direction. Axial and radial displacement of the pipeline is restrained through vertical pressure of the pressing block. And by adjusting the size of the clamping groove, the device can be suitable for pipelines with different pipe diameters. Meanwhile, the pipeline clamp is made of common light metal plates, and compared with an original cast iron pipeline clamp, the pipeline clamp is easier to maintain, lower in weight, capable of being disassembled and assembled manually and flexible to use.

The utility model provides a linear electric push rod directly driven by a motor, which comprises a shell, a motor, a screw rod and a telescopic rod, the motor, the screw rod and the telescopic rod are coaxially arranged, and the output shaft of the motor and the near end of the screw rod are circumferentially fixed and axially limited through a rotation constraint structure; the near end of the telescopic rod is provided with an internal threaded hole, the internal threaded hole and external threads of the lead screw form a lead screw pair, the far end of the telescopic rod extends out of the shell and is provided with a second connecting piece, and when the motor directly drives the lead screw to rotate, the lead screw pair converts rotary motion into axial linear motion of the telescopic rod. The telescopic rod and a guide sliding groove in the inner wall of the shell form a sliding pair through an annular flange, and a limiting flange is further arranged at the far end to restrain radial displacement. The linear type electric push rod directly driven by the motor is compact in overall design structure and high in transmission efficiency, achieves high-precision linear motion through combination of direct drive and a lead screw pair, is suitable for connection of executing mechanisms needing stable push-pull force, and is wide in application scene.

A driving device and an electric vehicle relate to the technical field of power assembly torque detection, a shell of the driving device comprises a groove, a torque sensor is fixed on the inner wall of the groove, the shell comprises another groove, and the other groove is used for accommodating a bearing. One through hole is used for penetrating through the bottoms of one groove and the other groove in the axial direction of the driving device, one end of one transmission shaft of the generator, the driving motor and the speed reducer penetrates through the through hole, and the torque sensor and the bearing surround the same end of the transmission shaft. In the embodiment, the same end of the transmission shaft provided with the bearing is provided with the torque sensor, the torque sensor detects the torque of the transmission shaft around the transmission shaft, the bearing is supported between the inner wall of the shell and the transmission shaft, radial displacement of the transmission shaft is reduced, shaking of one end of the transmission shaft is slowed down, and torque detection is prevented from being affected by radial movement of the transmission shaft. The stability and accuracy of the torque sensor on the torque detection of the transmission shaft are improved.

The invention relates to the technical field of oil fume purification, in particular to a magnetic suspension bearing motor for an oil fume purification device and the oil fume purification device.The magnetic suspension bearing motor comprises a rotating shaft, a radial magnetic bearing unit, a radial sensor and a control system.The rotating shaft is used for being connected with an impeller of the oil fume purification device; the radial magnetic bearing unit comprises a radial rotor and a radial stator, the radial rotor sleeves the rotating shaft, the radial stator is located on the radial outer side of the radial rotor, and the radial stator comprises a first coil winding arranged in the circumferential direction of the radial stator; the radial sensor corresponds to the rotating shaft and is used for acquiring radial displacement of the rotating shaft and generating a radial displacement signal; the control system is electrically connected with the radial sensor and the first coil winding so as to adjust the current of the first coil winding according to the radial displacement signal, so that the electromagnetic acting force at any position between the radial stator and the radial rotor in the circumferential direction is changed, maintenance of dynamic balance of the motor is achieved, and normal operation of the motor is guaranteed.

The invention relates to the technical field of pipeline structures, in particular to a pipeline socket with a water stop wing, comprising: a pipeline fitting, which comprises a pipe fitting body, one end of the pipe fitting body is provided with an insertion pipe, and the other end of the pipe fitting body is provided with an annular socket; the butt joint fittings are used for connecting the adjacent pipeline fittings; and the reinforcing accessory is arranged on the outer wall of the pipe fitting body. A traditional rigid and integrally-formed water stop ring is divided into a plurality of water stop wing pieces which are independently arranged in the socket guide groove in a surrounding mode, the water stop wing pieces are installed in a hinged mode through the hinge shaft bases, elastic supporting is provided through the springs, and therefore each water stop wing plate can independently conduct small-amplitude self-adaptive deflection relative to the pipe body; the problem that stress concentration is generated at the root of the water stop structure when radial displacement or angular deflection occurs at the pipeline connecting position is fundamentally solved, the risk that the pipe body cracks is remarkably reduced, and the structural safety and durability of a connector under the complex working condition are greatly improved.

The invention discloses a high-speed heavy-load working condition bearing dynamic stiffness testing device and testing method, and relates to the field of bearing testing. The invention solves the problems that the existing bearing dynamic stiffness test technology and equipment only can load in a single direction, cannot simulate axial and radial composite loading, depends on contact transmission, is insufficient in heavy load bearing, lacks system vibration error suppression measures, and is poor in reliability. And the high-precision test requirement of the independent rolling bearing under the high-speed heavy-load composite working condition is difficult to meet. A shafting supporting module is arranged on the upper portion of a test bench support, a measuring module is located over the shafting supporting module, an axial loading module and a radial loading module apply axial force and radial force to a tested bearing respectively, and a driving module drives a supporting shaft and an inner ring of the tested bearing to rotate. Axial and radial composite loading under the high-speed heavy-load working condition can be achieved, axial and radial displacement can be monitored synchronously, system errors are reduced, and high-precision measurement of the dynamic stiffness of the bearing is achieved.

The invention relates to the technical field of ultrasonic motors, in particular to an in-plane vibration traveling wave ultrasonic motor with adjustable pre-pressure and a method. The motor comprises a stator and a rotor which is arranged in an inner hole of the stator and is adjustable in radial size, the stator is a polygon and is provided with a central through hole, and a plurality of piezoelectric ceramic pieces are fixedly arranged on the outer wall of the stator; a prepressing adjusting mechanism is integrated in the rotor, the prepressing adjusting mechanism comprises a wedge groove sliding block assembly, a wedge block assembly, a threaded rod and a nut which are coaxially arranged, and radial displacement of the wedge block assembly is converted into elastic deformation of an elastic bush through the elastic bush, so that a controllable friction pair is formed between the elastic bush and an inner hole of the stator; the wedge groove sliding block assembly is matched with the threaded rod and the nut and used for converting rotating motion of the nut into radial displacement of the wedge block assembly, and prepressure stepless adjustment is achieved. Continuous, accurate and stepless adjustment of pre-pressure is achieved, and meanwhile the device has the advantages of being compact in structure, insensitive to machining errors, stable in performance and the like.

The application discloses a bearingless permanent-magnet thin-slice motor radial displacement sensor detection deviation correction method capable of accurately calculating eccentric direction and distance and quickly correcting through suspension current, and comprises the following steps: based on Maxwell stress tensor method and virtual displacement method, mathematical models of controllable suspension force of the bearingless permanent-magnet thin-slice motor and unbalanced magnetic pull caused by eccentricity in a rotor coordinate system are derived respectively; the suspension current is divided into two types of anti-eccentricity and anti-disturbance, and decoupling between eccentric distance and corresponding suspension current components is realized; with the aim of eliminating anti-eccentricity current, the eccentric direction and size are judged by extracting m-axis and n-axis suspension current components to determine a compensation point, and a cycle algorithm of step tracking minimum current is introduced near the compensation point. The application can correct the rotor static eccentricity phenomenon caused by the radial displacement sensor, effectively improve system efficiency and reduce temperature rise speed, and has the characteristics of short time consumption, low cost and high accuracy compared with existing methods.

Apparatus and associated methods relate to a can having a pattern of radial displacement of material of a malleable can end with respect to a longitudinal axis of a malleable can body. In an illustrative example, the can end may sealingly couple to an open end of the longitudinally extending can body by a circumferential seam to form a sealed cavity. A can-opening dispenser may, for example, include at least one radially displaceable element (RDISP) configured such that, when operated into releasable engagement with the radially patterned seam, the dispenser resists rotation relative to the can about the can's longitudinal axis. The RDISP may, for example, be radially deflected by operation of a collar in a first rotational direction (FRD). Continued operation of the collar in the FRD may, for example, operate an opening member to open the can. Various embodiments may advantageously provide self-opening dispensers for recyclable cans.

The application relates to the technical field of bearing dismounting tools, in particular to a bearing dismounting tool for a spinning wheel integrated wire passing assembly, which comprises a stainless steel positioning seat, an ejection screw rod and a circular reset pressing plate, the circular reset pressing plate is located at the top of the ejection screw rod, a clamping groove is formed in the top of the stainless steel positioning seat, the inside of the clamping groove is in threaded connection with the surface of the ejection screw rod, and an ejection rod is integrally cast on the top of the ejection screw rod. Through the cooperation of the clamping groove of the stainless steel positioning seat and the ejection screw rod, the stainless steel positioning seat can accurately clamp the wire passing assembly outer edge to limit the radial displacement, the ejection screw rod can push against the bearing inner ring through the ejection rod, the outer diameter of the ejection rod is slightly larger than the inner diameter of the bearing and smaller than the inner diameter of the plastic part, the bearing inner ring can be effectively pushed, and the ejection rod does not contact the wire passing ring plastic part, so that the device can conveniently push out the old bearing without impact load.

The invention relates to a clamping head arrangement, in particular for clamping a drill rod element, having a plurality of clamping jaw elements, each of which has a clamping surface which is designed in particular for clamping contact with a contact side of the drill rod element, and a main body with guide tracks, along which the clamping jaw elements are displaceably mounted, wherein the guide tracks are angled to a centre axis of the clamping head arrangement, so that displacement of the clamping jaw elements along the guide tracks causes axial and radial displacement of the clamping jaw elements with respect to the centre axis. According to the invention it is provided that the clamping jaw elements are each designed with a cylindrical or partially cylindrical guide body, and that the guide tracks in the main body are formed as partially cylindrical guide channels, in each of which a clamping jaw element with the cylindrical or partially cylindrical guide body is displaceably mounted.

The invention relates to the field of bearing measurement, in particular to clearance detection equipment for bearing manufacturing, which comprises a workbench and a control cabinet, and is characterized in that two groups of dial indicators which are oppositely arranged are linked with a pressing cylinder capable of transversely swinging, and on the basis that an inner ring and an outer ring are synchronously fixed, when the pressing cylinder drives the outer ring to swing, the dial indicators are driven to rotate; the connecting frames on the two sides touch the measuring ends of the dial gauges respectively, and the two dial gauges independently record the radial displacement on the two sides of the inner ring in real time. By comparing the two groups of data, the overall radial clearance value can be obtained, whether the clearances on the two sides are symmetrical or unbalanced loading exists or not can be more accurately judged, and the technical limitation that an existing device cannot compare the clearances on the two sides is effectively overcome; meanwhile, automatic centering of the dial indicator is achieved through guiding of the positioning rod and the inclined face of the conical positioning groove, floating matching of the connecting cylinder and the connecting rod and buffering of the spring can adapt to the height of the bearing, the servo motor is combined to drive the bearing base to rotate to obtain multi-phase clearance data, and reliable support is provided for comprehensive evaluation of the bearing quality.

This utility model relates to the field of civil engineering technology, specifically a pile foundation shaking table test device. It includes a shaking table body, a container on top of which holds soil and a pile foundation model. The container includes a coaxially arranged rigid inner frame and a rigid outer frame. A flexible sidewall structure is provided between the rigid inner frame and the rigid outer frame. The flexible sidewall structure consists of circumferentially spliced ​​flexible plates and multiple sets of micro-springs connecting the inner surface of the flexible plates to the outer surface of the rigid inner frame. The top and bottom of the flexible plates are connected to the rigid inner and outer frames via sliding guide components to allow radial displacement of the flexible plates in the horizontal plane. This pile foundation shaking table test device, by improving the boundary structure, effectively reduces the soil boundary effect, more realistically simulates the interaction between the pile and soil system under seismic loading, and improves the accuracy of the test.

The utility model relates to an umbrella honeycomb locking structure which comprises a middle rod, two limiting pieces, a honeycomb and an annular retaining ring. The two limiting pieces are arranged in the axial direction of the middle rod in a spaced mode, guide slopes are arranged at the opposite ends of the two limiting pieces, and locking grooves are formed in the peripheries of the limiting pieces. The honeycomb is of an integrally-formed structure, slidably connected to the middle rod in a sleeving mode and provided with a limiting groove. The annular retaining ring is elastically clamped to the honeycomb through a clamping structure and arranged on the middle rod in a sleeving mode, a locking block protruding in the radial direction is arranged on the inner side of the annular retaining ring, and the retaining ring can slide in the axial direction of the middle rod and has the radial elastic stretching freedom degree. When the honeycomb moves in the axial direction of the middle rod, the guide inclined faces and the locking blocks generate radial extrusion, and the retaining rings are driven to generate radial displacement till the locking blocks are clamped into the locking grooves. The locking block is clamped in the locking groove to provide a stable locking state, so that the honeycomb is effectively prevented from accidentally sliding on the middle rod. The honeycomb is of an integrally-formed structure, the assembly cost can be reduced, and meanwhile the use stability of the honeycomb is improved.

The invention provides a xenon bottle bearing hoop fixing structure which comprises hoop supports, a hoop belt, a tightening device and a punching rubber pad, the radial displacement of a xenon bottle is limited through the three hoop supports, the hoop belt penetrates through the hoop supports and is bound with a gas bottle body, all the supports form a whole, and all radial bidirectional constraints are indirectly generated. The three hoop supports are used for providing radial support for the gas cylinder from three directions, meanwhile, a flange installation face perpendicular to the gas cylinder is obtained, the hoop belts are used for binding the three hoop supports and the gas cylinder to form a whole, one-way support in the three directions is converted into two-way constraint in all the directions, and the perforated rubber pad serves as a compensation device for expansion of the gas cylinder. And the balance of support and compensation is achieved through different punching structure designs. The invention provides a high-reliability and high-bearing-capacity xenon cylinder fixing scheme, and the problem that radial constraint is insufficient when a large-loading-capacity xenon cylinder of a spacecraft is installed is solved.