75 results about "Torsional load" patented technology

The invention discloses a combined load synchronous application testing device. The technical problems that in the prior art, the load applying mode is single, and the combined load cannot be synchronously applied are solved. The device comprises a connecting mechanism and a load applying mechanism, wherein the load applying mechanism comprises a torsional load applying structure, a load transmitting structure and a multi-linkage testing structure. The load transmission structure comprises a special-shaped stress plate and a torsional load transmission assembly, and the torsional load transmission assembly comprises a connecting chuck and a torque plug-in. By controlling the rotation of the torsion load transmission assembly, a pure torsion load applying mode or a conversion mode of converting torsion motion into radial load can be selectively realized, and multi-directional load detection is realized. The invention further provides a combined load synchronous applying function, the single driving source synchronously activates the torsion load path and the radial load path by adjusting the geometric positions of the torque plug-in and the load adjusting plate on the connecting chuck, and synchronous applying of the torsion load and the radial load is achieved.

The automobile part torsional fatigue test bench comprises a bench body, a driving mechanism is arranged at one end of the top surface of the bench body, a workpiece carrying structure is arranged at the other end of the top surface of the bench body, a force application structure is arranged at the position, close to the driving mechanism, of the top surface of the bench body, and the driving mechanism comprises a driving bin. The end, away from the force application structure, of the driving bin is fixedly connected with a servo motor, and the two sides of the middle of the interior of the driving bin are fixedly provided with a cycloidal-pin wheel speed reduction assembly and a planetary speed reduction assembly correspondingly. The driving mechanism is driven by the servo motor, a huge oil supply hydraulic system does not need to be used, the occupied area is small, the output torsion load can be switched through the cycloidal-pin wheel speed reduction assembly or the planetary speed reduction assembly, the load output through the planetary speed reduction assembly is low, constant loads can be repeatedly applied to a workpiece for a long time, and the working efficiency is improved. The output load of the cycloidal-pin wheel speed reduction assembly is high, destructive testing of the maximum load can be carried out, and two detection modes can be considered.

The application discloses a composite bushing, an automobile suspension and an automobile. The composite bushing comprises a hydraulic bushing with main spring rubber and a buffer bushing. The buffer bushing has an elastic buffer layer, which is sleeved on the outer periphery of the hydraulic bushing along the axial direction of the hydraulic bushing and surrounds the main spring rubber. The hardness of the elastic buffer layer is less than that of the main spring rubber, and the elastic buffer layer is used to produce elastic deformation at least when the composite bushing is subjected to at least one of radial load, torsional load and yaw load. By sleeving the buffer bushing with small dynamic stiffness on the outside of the hydraulic bushing, a composite structure with stiffness decoupling is formed. The buffer bushing is used to absorb part of high-frequency small-amplitude radial vibration by virtue of the small dynamic stiffness, and the hydraulic bushing is used to absorb low-frequency large-amplitude vibration.

The application relates to the technical field of flywheel energy storage rotating shaft forging detection, and discloses a flywheel energy storage rotating shaft forging strength reliability detection device, which comprises a detection machine body, a supporting table arranged on the detection machine body and used for supporting a workpiece to be detected, a top support arranged on the top of the detection machine body, a lower pressing box arranged at the bottom of the top support and a lower pressing part arranged in the lower pressing box. Through the arrangement of the supporting table, the lower pressing part, two torsion tables and torsion parts on the detection machine body, the flywheel energy storage rotating shaft forgings extracted from the same batch can be pressed by the lower pressing part first and then inputted with torsion loads by the two torsion parts to the end of the workpiece, so that the effects of lower pressing load detection and torsion load detection can be achieved in the same detection device.

The application relates to the technical field of automobile stabilizer bars, and particularly discloses an anti-rollover new energy automobile stabilizer bar and a fatigue testing device thereof, which comprises a hollow rod body and connecting parts fixed at two ends of the rod body, characterized in that a helical reinforcing rib extending along the axial direction of the rod body is embedded in the inner wall of the rod body; the rod body is respectively provided with a first working section for bearing a torsional load and a second working section for bearing a bending load, and the wall thickness of the first working section is greater than that of the second working section. The application has the effect of improving the torsional stiffness and bending strength of the stabilizer bar.

The invention provides a corrugated pipe fatigue test device. The corrugated pipe fatigue test device comprises a test bed, a corrugated pipe fixing tool arranged on the test bed and a driving unit used for applying a multi-dimensional load to a to-be-tested corrugated pipe assembly. Wherein the driving unit comprises a first driving unit used for applying a torsional load to the to-be-tested corrugated pipe assembly and a second driving unit used for applying a transverse displacement to the to-be-tested corrugated pipe assembly, and the first driving unit and the second driving unit are arranged on the two opposite sides of the corrugated pipe fixing tool respectively.

A compressor assembly of a gas turbine engine of an aircraft includes an impeller configured to rotate about an engine central longitudinal axis, and a diffuser positioned at a compressor outlet fluidly downstream of the impeller. One or more support structures are secured to the diffuser via a plurality of support fasteners. The plurality of support fasteners are configured to be frangible when torsional loads from the diffuser on the one or more support structures exceed a predetermined limit, thereby isolating the impeller and the diffuser from the one or more support structures.

This disclosure relates to the field of vehicle technology, and more particularly to a rear floor frame, a rear floor assembly, and a vehicle. The rear floor frame includes a frame body with rear end interfaces on both sides of its rear end. These rear end interfaces are used to connect to a rear longitudinal beam. A cavity structure is provided on the rear end interface, with an opening facing the rear of the vehicle body. The cavity structure includes a first cavity and a second cavity distributed vertically. The front end of the first cavity extends beyond the front end of the second cavity in a direction away from the opening, forming a clearance portion at the bottom of the first cavity. In the rear floor frame provided by this disclosure, the size of the second cavity is adapted to the installation space at the rear of the vehicle body, and the depth of the first cavity is greater than the depth of the second cavity. By increasing the depth of the first cavity, the contact area when the rear longitudinal beam connects to the rear end interface can be increased, thereby enabling the mating joint to withstand higher shear stress and bending / torsional loads, and improving the space utilization rate in the length direction of the vehicle body.

The invention provides a large-opening structure torsion load distribution proportion calculation method and device, and belongs to the technical field of aircraft structure design. The method comprises the steps that a torsion model of a large-opening structure is constructed; based on the torsion model of the large-opening structure, determining the torque only generating free torsion under the torsion load of the large-opening structure and the torque only generating constrained torsion under the torsion load of the large-opening structure; a change rate expression of the torsion angle is constructed based on the torque only generating free torsion under the torsion load of the large-opening structure and the torque only generating constrained torsion under the torsion load of the large-opening structure; based on the change rate expression of the torque angle, the torque ratio of the free torsion to the constrained torsion is determined; determining the type of the large-opening structure, determining section parameters of the large-opening structure based on the type of the large-opening structure, and calculating the proportion of free torsion and constrained torsion under the torsion load of the large-opening structure based on the section parameters.

The application discloses a turbine shaft scale-down piece hot machine fatigue experiment method, and belongs to the field of turbine shaft technology and material mechanical property testing. The application comprises a turbine shaft scale-down piece design method, a turbine shaft scale-down piece clamp design scheme method and a turbine shaft scale-down piece hot machine fatigue test system. The application uses an equal proportionally reduced simulation piece to equivalently perform stress state on a dangerous position of a turbine shaft structure, so as to characterize the fatigue performance of the turbine shaft, and can partially replace a component level examination test, shorten a structure design cycle and reduce component consumption. The application uses a design that the scale-down piece and the clamp loading axis are parallel but not collinear, so that the tensile-bending-torsional fatigue test is carried out on a tensile-torsional testing machine, the tensile and torsional loads of the testing machine are converted into tensile, bending and torsional loads, and the loads are applied to the scale-down piece. The application uses a bolt and a special-shaped end clamping mode to respectively transmit the tensile, bending and torsional loads, and the structure is simple and reliable.

The invention discloses a high-temperature internal pressure tensile torsion composite fatigue test system, and relates to the technical field of material mechanical property tests.The high-temperature internal pressure tensile torsion composite fatigue test system comprises a furnace body, clamp assemblies are arranged in the furnace body, and the clamp assemblies are used for clamping the two ends of a test piece; the axial loading device is in transmission connection with the clamp assembly and can apply an axial tensile load, an axial compression load and an axial torsion load to the test piece; the annular internal pressure loading device is communicated with the clamp assembly through a pipeline and can introduce gas with set pressure into the test piece through the clamp assembly so as to apply annular internal pressure to the test piece; the temperature control device is connected in the furnace body and can heat the test piece to a set temperature; the measuring assembly can detect deformation data of the test piece in real time. According to the invention, various loads can be applied during the fatigue test, so that the high-temperature real service characteristics of the pipe can be truly reflected.

The invention provides an umbilical cable multi-axis loading fatigue testing device for deep-sea mining. The umbilical cable multi-axis loading fatigue testing device comprises a frame; the fatigue test assembly is arranged in the frame; the device is used for installing a test piece and comprises a tension-torsion loading mechanism of which the action end is connected with the bottom of the test piece and which is used for applying an axial tension load and a torsion load to the test piece; the deformation loading mechanisms are arranged in the circumferential direction of the test piece, and the telescopic end of each deformation loading mechanism can independently stretch out to apply transverse displacement to different parts of the test piece, so that the test piece is bent and deformed; the internal pressurizing mechanism is communicated with the interior of the test piece and is used for applying pressure to the interior of the test piece; and the upper computer is linked with the fatigue test assembly so as to control the on-off and operation of the fatigue test assembly.

This application relates to a method, apparatus, and computer device for determining the tightening torque of a bolted connection. The method analyzes the force data at the bolt connection location to determine the maximum shear working load, maximum axial working load, and maximum torsional load. Based on the maximum shear working load, maximum axial working load, maximum torsional load, and bolt parameters corresponding to any bolt type, the minimum and maximum assembly preload of the bolt are calculated. When the parameters representing preload and / or the parameters representing load meet the verification conditions, the minimum and maximum tightening torques are calculated based on the bolt parameters, minimum assembly preload, and maximum assembly preload. The verification conditions include at least one of surface crushing verification, working stress verification, shear stress verification, and alternating stress verification. Verifying the selected bolts before calculating the tightening torque can effectively improve the accuracy of bolt selection and enhance the reliability of the bolted connection.

Provided is a bush for supporting an anti-roll bar installed in a vehicle or one of various mechanical devices to maintain the lateral balance and handle torsional loads to prevent rolling, and more specifically, to a bush, which can minimize rubber molding, achieve lightweight by substituting with plastic components as much as possible, obtaining robust support, minimizing the load in an R-direction, and enhancing resistance in a Q-direction.

The invention belongs to the technical field of fatigue tests, and discloses a composite swing torsion loading device and method.The composite swing torsion loading device is characterized in that one end of a composite test piece is connected with a first test piece clamping assembly, one end of the first test piece clamping assembly is connected with the composite test piece, and the other end of the first test piece clamping assembly is connected with a thrust bearing set; the first test piece clamping assembly can freely rotate in the X-axis direction relative to the thrust bearing set, and the thrust bearing set can transmit an axial load and a bending moment load; the other end of the composite material test piece is connected with a second test piece clamping assembly; the second test piece clamping assembly is directly fixed on the U-shaped frame; lug pieces at the two ends of the U-shaped frame are hinged to the two sides of the O-shaped ring along the Y axis through a first pin shaft and a second pin shaft respectively, and the U-shaped frame can rotate relative to the O-shaped ring along the first pin shaft and the second pin shaft. The problem of mutual coupling of four-dimensional loads including waving bending moment, shimmy bending moment, centrifugal force load and torsional load of the composite material is solved.

The present invention relates to a system (100) for detecting a torsional load (T) acting on a torque-transmitting component (110), comprising a component (110) with a section (120) made of magnetizable material in which at least two circumferentially extending magnetic strips (121, 123, 125) with mutually opposing magnetization directions (122, 124, 126) are arranged successively in an axial direction (111) of the component (110), a first sensor unit (2) with two sensors (20, 22) associated with a first magnetic strip (123) for detecting a radial field component (6) and a second sensor unit (3) with two sensors (30, 32) associated with a second magnetic strip (121, 125) for detecting a radial field component (6); it further relates to a corresponding method.

The application discloses a screw pump screw sleeve pre-tightening method and belongs to the technical field of screw pump machining, and comprises the following steps: S1, clamping nuts are installed at the pre-tightening positions of screw sleeves; S2, a transmission shaft and the screw sleeves are placed in a pre-tightening device, and the pre-tightening device is assembled; S3, a hydraulic pump is started, and the hydraulic stretcher makes the transmission shaft produce elastic deformation; S4, according to the functional relationship between the pre-tightening torque and the output pressure of the hydraulic pump, the clamping nuts are locked when the pre-tightening torque reaches the technical requirement; and S5, the hydraulic pump pressure is unloaded, and the pre-tightening device is disassembled. The application can accurately control the pre-tightening torque of the screw sleeve, does not bring about destructive torsional load, and avoids damage to the clamping nuts and the transmission shaft.

The application provides a structure for reducing torsional load, comprising a body, a rotating part and a sealing part; the body has a first mating surface; the rotating part has a second mating surface; the rotating part is installed on the body, and the second mating surface is rotationally connected with the first mating surface; the sealing part is arranged between the first mating surface and the second mating surface, and the first mating surface and the second mating surface are in interference fit; the first mating surface comprises a first part and a second part along a first direction, the first direction is parallel to the central axis of the rotating part; the first part and the second part are both curved surfaces, a plurality of grooves are arranged on the first part at intervals, and the plurality of grooves are distributed along the circumferential direction of the first part. One technical effect of the application is that the design is reasonable, which can effectively reduce the torsional load and better ensure the sealing between the body and the rotating part.

A High Altitude Pseudo Satellite (HAPS) aircraft is disclosed for maintaining the span-wise shape of the wing and maintaining total bending and torsion loads. The aircraft including at least one aeroelastic span loaded fixed wing having an aspect ratio greater than 15 and wing loading less than 6 kg / m2, the wing having a plurality of spoilers distributed across the span of the wing and each spoiler being chordwise located adjacent the center of pressure of the wing. The HAPS aircraft further includes a control system for controlling the spoilers, and sensors which determine the amount of lift at points or regions along the wing span, the pitch and roll at points or regions along the wing span, the bending and torsional strain at points or regions along the wing span, or the absolute speed and roll and pitch angle of the wing.

The invention provides a vehicle which suppresses torsional load transmitted to a battery pack mounted on a floor of the vehicle. A battery pack (battery case) is mounted below a floor panel of a vehicle. The battery case is fixed to the floor panel by a plurality of first fixing portions disposed along a first imaginary line extending in the front-rear direction of the vehicle at the center of the wheel base of the vehicle, and a plurality of second fixing portions disposed along a second imaginary line extending in the left-right direction of the vehicle at the center of the wheel base of the vehicle.

The invention provides an automobile rear shock absorber support force transmission structure and an automobile, and belongs to the technical field of vehicles, the automobile rear shock absorber support force transmission structure comprises a rear shock absorber support assembly arranged on the inner side of a rear wheel cover inner plate and a rear wheel cover inner plate reinforcing plate assembly arranged on the outer side of the rear wheel cover inner plate; the rear wheel cover inner plate reinforcing plate assembly and the rear shock absorber support assembly intersect to form an X-shaped structure to form an X-shaped force transmission structure, so that an excitation source borne by a shock absorber installation area can be dispersed and transmitted in two upward directions and two downward directions along the X-shaped force transmission structure, energy transmitted into a cab by the excitation source can be reduced or relieved, and the service life of the cab is prolonged. The structure strength and the force transmission characteristic of the rear shock absorber installation area can be improved, the overall torsional rigidity of the rear portion of the vehicle body is increased, the situation that torsional bearing force is diffused to the stress area of the rear wheel cover inner plate is avoided or relieved, and therefore the failure problems of fatigue, cracking and the like of the stress area of the rear wheel cover inner plate can be avoided, and the safety performance of the rear portion of the vehicle body can be improved.

The present invention relates to a bushing for supporting an anti-roll bar, which is installed in a vehicle or various mechanical devices and serves to prevent rolling by maintaining left-right balance and withstand torsional loads. More specifically, the present invention is improved to minimize rubber molding and replace as much rubber as possible with plastic parts, thereby achieving weight reduction and obtaining a strong supporting force, and in particular, to minimize loads in an R direction and increase resistance in a Q direction.

The utility model provides a kind of full liquid receiving floating disc sealing anti-rotation limiting device, belong to petrochemical field, including floating disc, the inside of the floating disc is provided with anti-rotation limiting assembly, the side of the anti-rotation limiting assembly is provided with auxiliary assembly, the utility model is provided with anti-rotation limiting assembly, it is realized as the structure of preventing rotation of floating disc, by rigid connection frame that penetrates the inside of floating disc, rotation torque is directly converted into axial tension and is transmitted to the edge of floating disc, forms distributed anchoring force, its internal filler material is while buffering torsional load, ensure the efficient conduction of restraint, from the mechanical root block the rotation tendency of floating disc, by the auxiliary assembly of setting, it is realized that this component constructs friction in the periphery of floating disc: outside corrosion-resistant friction structure is consumed rotary kinetic energy by contact tank wall, realize physical brake;Prevent the rotation risk induced by imbalance or deformation.

The application discloses a torsional moment load loading device for a toothed sleeve connecting structure of an aero-engine power turbine rotor, which comprises a test-bed base, a power turbine rotor test piece, a front supporting seat, a rear supporting seat, a torsional moment load loading structure, an L-shaped support, a torsional load loading threaded support, an angular limiting spline shaft adapter plate and an angular limiting spline, wherein the front supporting seat and the rear supporting seat are used for supporting the power turbine rotor test piece; the torsional moment load loading device is installed between a compressor and a turbine of the power turbine rotor test piece, the L-shaped support is used for restraining the torsional moment load loading structure; and the angular limiting spline shaft adapter plate and the angular limiting spline exert circumferential restraint on a power output shaft of the power turbine rotor. The application can exert torsional moment load on the toothed sleeve connecting structure rotor test piece, and simulate the aerodynamic torque effect of the power turbine on the rotor in a working state.

The invention provides an aramid rope anti-falling spoke installation structure which comprises an aramid spoke, the aramid spoke comprises a spoke body and installation assemblies arranged at the two ends of the spoke body, the outer side section of each installation assembly is of a stepped structure, the size of each installation assembly is gradually increased in the extending direction of the two ends of the spoke body, and each installation assembly is in a non-rotating body shape; the tooth caps are arranged at the two ends of the aramid fiber spokes, connecting parts matched with the mounting assemblies are arranged in the tooth caps, and the mounting assemblies are wedged into the connecting parts so that the tooth caps can be fixed to the two ends of the aramid fiber spokes. The installation assemblies arranged at the two ends of the non-revolving body shape are fixedly connected with the tooth caps arranged on the rim, the problem that due to the fact that aramid fibers are weak in performance when bearing compression force or shear force or torsional load, the spokes may twist in the riding process can be solved, and the riding stability is improved.

The present invention provides a straightening device (100) for straightening a cable (200). The straightening device includes a plurality of interlocking roller pairs (130) fixedly arranged for feeding the cable along a feeding direction (150) between a first roller (110) and a second roller (120) of each interlocking roller pair. In operation, the free-rotating surfaces of the first roller and the second roller induce a torsional load (207) on the cable. In the feeding direction of the cable, the interlocking roller pairs are positioned in an alternating mirror configuration. Advantageously, inducing a torsional load allows the cable to be straightened by reducing any residual torsion present in the cable when it is unwound from the reel. Advantageously, the alternating mirror configuration prevents the induced torsional load from accumulating in a single direction, because such accumulation would misalign the components forming the non-uniform internal structure of the cable, and thus be detrimental to the cable.

The invention relates to the technical field of axle strength testing, and discloses an automobile axle strength testing device and a testing method.The automobile axle strength testing device comprises a detection platform and a to-be-detected axle, supporting tires are arranged at the two ends of the to-be-detected axle, and data acquisition units are evenly arranged on the outer side of the to-be-detected axle; the axle to be detected is placed at the top of the detection platform through the supporting tires; the test equipment can accurately reproduce the stress state of the axle under different turning radiuses by dynamically adjusting the position of the support connecting seat at the bottom of the axle, especially realizes real simulation of the torsion load and stress concentration phenomenon caused by different tracks of inner and outer wheels, greatly improves the test accuracy and the working condition coverage range, and improves the test efficiency. Through integrated load pressure application and a displaceable torsion driving mechanism, the complex working condition that the axle steers while bearing a vertical load is effectively simulated.

Predicting shock absorber damage in a machine system includes monitoring machine operating parameters and temperature parameters related to torsional load on a crankshaft. The predictive alert strategy also includes populating an operating history of the machine system based on the monitored parameters, calculating a shock absorber damage term based on the operating history, and triggering a shock absorber damage alert if the shock absorber damage term exceeds a threshold.

The present application relates to the technical field of automobile parts testing, and particularly relates to a cyclic load fatigue testing device for a suspension rubber bushing, which comprises an outer cylinder clamp, an inner cylinder limiting mechanism, a multi-axis guiding mechanism and a load simulation mechanism. The inner cylinder limiting mechanism constrains the radial translation of the bushing inner cylinder and retains the rotational freedom through a mandrel and a fixed shaft support; the multi-axis guiding mechanism guides the outer cylinder clamp to reciprocate in at least two mutually perpendicular radial directions. The load simulation mechanism simultaneously links a radial driving unit and a torsional driving unit through a main drive shaft, and utilizes the one-way rotation of the main drive shaft to synchronously drive the radial displacement of the outer cylinder clamp and the axial rotation of the mandrel. The present application adopts a full-mechanical hard-link transmission architecture, ensures the absolute phase synchronization of the radial translation load and the axial torsional load on the time axis, can truly restore the fatigue failure process of the bushing under a multi-dimensional composite stress state, and has the remarkable advantages of high simulation accuracy, good testing repeatability and the like.