670results about "Work measurement" patented technology

The invention discloses an automatic torsion testing machine. The automatic torsion testing machine comprises a first table support, a second table support, a third table support, a fourth table support and stand bars, wherein the framework of the whole torsion testing machine is formed by the first table support, the second table support, the third table support and the fourth table support, the stand bars are installed on the bottom corners of the framework, a working table is arranged above the third table support and the fourth table support, a second part detecting sensor is installed above the third table support and on the working table, and a first part detecting sensor is installed above the fourth table support and on the working table. The automatic torsion testing machine has the advantages that working efficiency is improved, labor intensity of workers is relieved, and the integral advanced level of an enterprise can be improved.

The invention relates to the technical field of film strain, in particular to a preparation and installation method of a film strain sensor and a harmonic reducer. The preparation and installation method comprises the steps that the surface of a workpiece to be installed is coated with a polyamide acid solution, then heating is conducted, and polyamide acid is subjected to dehydration cyclization to form a polyimide film attached to the surface of the workpiece to be installed; and then, forming a laser-induced graphene electrode pattern on the polyimide film. The harmonic reducer comprises a wave generator, a rigid gear, a flexible gear and a thin film strain sensor, the flexible gear is connected into the rigid gear in a toothed mode, and the wave generator is arranged in the flexible gear; the film strain sensor comprises a strain film and a graphene electrode, the graphene electrode is formed on the strain film, and the strain film is in direct contact connection with the surface of the flexible gear. Through the film strain sensor adhered to the surface of the workpiece to be installed, in-situ torque detection can be achieved, measurement errors, hysteresis, instability and the like caused by a glue joint layer are avoided, and measurement is more accurate.

This sensor device comprises a sensor body (13 to 16, 21, 22), a sensor housing (30), a connector housing (50), and a flange 51. The sensor body (13 to 16, 21, 22) captures changes in a physical quantity, and the sensor housing (30) accommodates at least a portion of the sensor body. The connector housing (50) is provided with a detecting element (40) that outputs a signal corresponding to a change in the physical quantity, and the part in which the detecting element (40) is provided is inserted inside the sensor housing (30). The flange (51) extends outward from the connector housing (50), and a joining surface (53) facing the sensor housing (30) side is joined to the sensor housing (30). The joint surface (53) of the flange (51) is inclined with respect to a virtual plane (VS) that is perpendicular to a direction (ID) in which the part of the connector housing (50) in which the detecting element (40) is provided is inserted into the sensor housing (30).

The invention discloses a quantitative test method and system for a peak locked-rotor torque of a robot joint module, and relates to the technical field of robot joint performance evaluation, and the method comprises the steps: extracting a torque time-calendar curve of the joint module, defining the peak locked-rotor torque as a controlled low-frequency fatigue loading process, and building a mapping model of a torque amplitude and a failure cycle index; constructing a test system, and performing torque-current static calibration; embedding a specific excitation function in a current loop of the servo driver; the bus voltage and rotating speed change rate is monitored in real time, and the voltage and current impact at the unloading moment is inhibited by adopting a back electromotive force compensation algorithm and combining an energy consumption discharge loop; and repeatedly loading until the structure is damaged, recording the number of cycles, and drawing a peak torque-life curve as a basis for predicting the life of the whole machine. According to the method, quantitative association of the peak locked-rotor torque and the fatigue life is realized, quantitative evaluation from a static index to a dynamic life is realized, a basis is provided for life prediction of the whole robot, and the test precision is improved.

A torque sensor 10 comprises: a stub shaft 86; a first pinion gear 91 through which torque is transmitted to and from the stub shaft 86 via a torsion bar 95; a sensor body 58 fixed to the first pinion gear 91 or the stub shaft 86; a sensor housing 21 that houses the stub shaft 86 and the sensor body 58; and a bearing 70 that rotatably supports the stub shaft 86 with respect to the sensor housing 21. The stub shaft 86 has a guide part 87 having a diameter that is slightly smaller than the diameter of a portion of the stub shaft 86 where the bearing 70 is disposed. The length L1 in the axial direction from a guide end 87a to an end section 58a of the sensor body 58 on a side where the guide part 87 is located is longer than the length L2 in the axial direction from the bearing 70 to an end section 23 of the sensor housing 21.

The application discloses a kind of single blade cutter automatic detection system of shield machine, belong to shield machine cutter technical field.A kind of single blade cutter automatic detection system of shield machine, including rack, the rack is sequentially provided with air-tightness detection module, solid and liquid lubricant adding module, cutter running module, torque detection module, laser welding module, laser coding module and slide table assembly, the cutter body is fixed on the slide table assembly, and slide table assembly controls cutter body moving position.A kind of single blade cutter automatic detection system of shield machine of the application, from air-tightness test to laser coding whole process does not need manual intervention, detection efficiency is improved, slide table assembly is accurately positioned, five big module sequential operation, single piece detection time is shortened, air-tightness detection is with the double-end dynamic sealing of lower end sealing cavity and upper end sealing cavity, sealing is good, detection precision is high;Particularly set conical clamping block, insert bar and clearance hole staggered engagement, adaptive cutter ring diameter.

The present invention relates to a drive unit of an electric bicycle, comprising a bearing receptacle which is designed to hold a bearing, wherein the bearing receptacle is designed to be attached directly to a frame interface of the electric bicycle by means of at least one fixing element.

This application discloses a torque detection device, comprising: a strain gauge for deforming under torque; a first strain gauge fixed on the strain gauge, the permeability of which varies with the strain applied to it; a circuit board having at least one first planar coil and the same number of second planar coils as the first planar coil; a second strain gauge disposed on the side of the circuit board away from the first strain gauge, and having the same structure and material as the first strain gauge; and a dielectric layer disposed between the circuit board and the second strain gauge; wherein the first planar coil is disposed opposite to the first strain gauge; the second planar coil is disposed opposite to the second strain gauge; and the thickness and dielectric constant of the dielectric layer are set such that the inductance parameter of the second planar coil responds to temperature changes in a manner that matches the inductance parameter of the first planar coil responds to temperature changes.

The utility model discloses a bow wire torque angle measuring device for measuring the size of the torque angle of the bending on the bow wire. The device comprises: an angle measuring scale, a clamp seat and a connecting base; the surface of the clamp seat is provided with a bow wire accommodating groove, one end of the bow wire accommodating groove abuts on the origin of the angle measuring scale, the extension direction of the bow wire accommodating groove is directly opposite to the origin of the angle measuring scale, and the reading is along the direction directly opposite to the angle measuring scale, so that the size of the torque angle on the bow wire can be accurately read. After the corresponding torque is bent, the doctor places the bow wire on the device to read the torque angle, and judges whether the torque of the bow wire is within the preset range through the reading. Therefore, after using the device, the accurate torque angle can be bent on the bow wire, the influence of the error of manual bending on the force expression effect of the bow wire is avoided, the force of the bow wire is more accurate, the correction effect is more delicate, and the treatment period is shortened.

The invention discloses a gear abrasion testing machine and a testing method, and relates to the technical field of gear testing equipment. Real working conditions can be highly simulated, and the gear and the lubricating oil can be subjected to integrated collaborative testing. The testing machine comprises a gear accompanying test box, a gear test box, a first shaft system and a second shaft system, the first shaft system comprises an accompanying test pinion mounting shaft and a test bull gear mounting shaft; the accompanying pinion mounting shaft is fixedly connected with an accompanying pinion; the test bull gear mounting shaft is fixedly connected with a test bull gear; two ends of the accompanying test pinion mounting shaft are respectively connected with the driving motor and the test bull gear mounting shaft; the second shaft system comprises an accompanying test bull gear mounting shaft, a torque sensor, a loading clutch and a test pinion mounting shaft; an accompanying test bull gear is fixedly connected to the accompanying test bull gear mounting shaft; the test pinion mounting shaft is fixedly connected with a test bull gear; the loading clutch is used for applying and locking static torque; the invention further discloses a testing method based on the testing machine.

A rotorcraft propulsion system includes a mast coupled to a rotor assembly, a gear coupled to the mast, the gear during use producing an axial reaction force, a flexure shaft extending from the gear, where the flexure shaft does not rotate with the gear and the flexure shaft flexes in response to radial loads from the gear, and a load cell on the flexure shaft to measure the axial reaction force.

The invention relates to a system for determining the torque applied between two rotating elements, said system comprising a test body (5) having an inner ring (6) and an outer ring (7) connected concentrically by a deformable structure of N arms (19), each extending between an inner end (19a) and an outer end (19b), said adjacent ends (19a, 19b) being separated by angles Acou and Aban, respectively, and a device for determining an angle between the rings (6, 7) which is a function of the applied torque, each ring (6, 7) being equipped with N means (6a, 7a) for fixing a corresponding ring of the encoder, said fixing means being angularly distributed to form angles ACint and ACext with the nearest arm end (19a, 19b), said angles being such that: 0.25*Aban ≤ ACext ≤ 0.35*Aban and 0.45*Acou ​​≤ ACint ≤ 0.55*Acou. Figure 2a

Method (400) for controlling the steering of an autonomous vehicle (10), comprising: Operating (402) the autonomous vehicle (10) in a semi-automatic mode by a processor (44); Receiving (406) a driver input containing a measured driver torque by the processor (44); Receiving (404) hazard data by the processor (44); Determining (410) a steering input bias by the processor (44) based on an impedance relationship, impedance parameters, the measured driver torque and the hazard data; Determining (414) a reference angle by the processor (44), based on the steering command bias and a desired angle; and Generating (416) control data by the processor (44) to control the steering of the autonomous vehicle based on the reference angle, characterized in that the method includes setting the impedance parameters based on the hazard data, wherein the determination of the steering input bias is based on the set impedance parameters, the hazard data shall include at least one of the following: lateral distance to a hazard, time until impact and type of hazard, where the adjustment involves increasing the impedance stiffness parameter in a non-linear manner depending on the hazard data, wherein the hazard data contain a direction of a hazard and wherein the adjustment of the impedance parameters is based on the direction of the hazard and the steering input bias, where the adjustment involves a continuous superposition of the impedance parameters over a specific period of time, where the superposition is based on an initial time period in which a hazard occurs in the same direction as the current steering input bias, the overlapping occurs over a second period when the hazard is no longer present, and that the procedure further includes allowing driver input for direct steering of the vehicle without semi-autonomous steering when the measured driver torque is greater than a dynamic threshold.

This utility model discloses a testing platform for new energy vehicles, applied in the field of automotive testing equipment technology. It includes a first mounting base and a second mounting base. Both the first and second mounting bases have grooves on their tops. A lifting seat is installed inside each groove. A movable groove is symmetrically formed on the top of each lifting seat. A movable block is installed inside each movable groove. A support column is installed on the top of each movable block. Limiting wheels are fixedly fitted onto the surface of each support column. An adjusting screw, threadedly connected to the movable block, is rotatably connected inside the movable groove. This utility model, by installing movable blocks on the lifting base, allows the movable blocks to move when the adjusting screw is rotated. This causes the support column on top of the movable block to drive the limiting wheels to contact the outer surface of the vehicle tires. The four limiting wheels limit the movement of the four tires, preventing tire displacement during testing.

The sensor is characterized by comprising a sensor shell, a conversion device, a heat dissipation device, a connector, a base device, a protective shell device and a buckle, the conversion device is arranged in the sensor shell, the heat dissipation device is arranged on the side face of the sensor shell, and the connector is arranged on the side face of the heat dissipation device. The heat dissipation device is connected with the connector through a nut, the base device is arranged below the sensor shell, the sensor shell is connected with the base device through a nut, the protective shell device is arranged above the sensor shell, and the sensor shell is connected with the protective shell device through a nut. According to the utility model, by optimizing the structural design, the close fit of all parts is ensured, the stability and durability of the sensor are improved, the service life is effectively prolonged, and the adaptive capacity of the sensor in a complex environment is further enhanced.

The invention provides a shaft of a magnetic torque angle sensor capable of reducing axial dimension. The shaft of the magnetic torque angle sensor is provided with: an angle detection rotor; and a torque detection rotor provided adjacent to the angle detection rotor in the axial direction, the angle detection rotor having: an angle detection non-magnetic body section comprising a non-magnetic body and having a cylindrical outer peripheral surface; and an angle-detecting magnetic body section that is formed from a magnetic body and is provided on the outer peripheral surface of the angle-detecting non-magnetic body section, the torque-detecting rotor having a torque-detecting magnetic body section that is formed from a magnetic body and is formed integrally with the angle-detecting magnetic body section, the torque-detecting magnetic body section being provided on the outer peripheral surface of the angle-detecting non-magnetic body section, and the torque-detecting magnetic body section being provided on the outer peripheral surface of the angle-detecting non-magnetic body section. The size in the axial direction of the angle detection magnetic body part changes periodically according to the change of the position in the circumferential direction.

The invention belongs to the technical field of robot sensing, and discloses a harmonic reducer built-in torque measurement method based on independent gain adjustment, and the method comprises the steps: arranging M strain gauges on the surface of a diaphragm part of a flexible gear of a harmonic reducer; the number M of the strain gauges meets the condition that M is greater than or equal to 2N + 1, wherein N is the highest order of the frequency component of the ripple interference signal to be compensated. In order to eliminate ripples of N frequency components, at least 2N + 1 strain gauges are needed. Therefore, three or more strain gauges (for example, M is greater than or equal to 3) are arranged on the flexible wheel diaphragm part to form an information redundant sensing array, so that the system has enough degree of freedom to simultaneously characterize a real torque signal and ripple interference of a plurality of frequency components.

The utility model relates to the technical field of motor vehicle detection equipment, and discloses an adjustable motor vehicle detection equipment roller which comprises an adjusting box, a lifting mechanism is arranged in the adjusting box, a rotating mechanism is arranged in the adjusting box, and the lifting mechanism comprises a lifting assembly and a buffering assembly. The buffering assembly is arranged on the top of the lifting assembly. The height of the first roller body and the height of the second roller body are adjusted through the lifting assembly, so that the height of the first roller body and the height of the second roller body are adjusted according to actual requirements, the practicability of the device is improved, a buffer plate slides in a sliding groove of a mounting frame through a buffer assembly, and therefore impact force is buffered; the first roller body, the second roller body and the lifting equipment are prevented from being damaged, the first roller body rotates to drive the first belt wheel to rotate, the first belt wheel drives the second belt wheel to rotate through a belt, the second belt wheel rotates to drive the second roller body to rotate, and therefore tires of the vehicle are rotated, and the vehicle is detected.

The invention relates to the technical field of motor performance test equipment, in particular to performance simulation and test equipment and method for a dual-redundancy motor, and the performance simulation and test equipment for the dual-redundancy motor comprises a base, a mounting frame, a vibration ring, a torque detection unit and a connection socket. The connection socket is fixedly connected with a buckle, the connection socket is provided with a connection interface which is in circuit connection with a detected motor, and the torque detection unit is connected with a rotor of the detected motor and detects the output torque of the detected motor; vibration generated by the radial vibration motor and the axial vibration motor on the vibration ring is transmitted to the mounting ring and the dual-redundancy motor, the vibration of the dual-redundancy motor in the running process when the dual-redundancy motor is mounted on an automobile is simulated, and the position and angle of the vibration transmitted to the dual-redundancy motor are changed by rotating the transmission rod. Therefore, the performance simulation test effect of the invention is improved.

The present application relates to hybrid tractor technical field, specifically relates to a kind of based on the effective stress identification method of hybrid tractor load spectrum of multi-mode operating condition, comprising the following steps: S1, the load signal of power output shaft, suspension mechanism and battery management system under multi-mode operation is collected;S2, according to the segment of operating mode switching feature, extract peak value, change rate and energy proportion to generate load feature matrix;S3, combined with engine speed and motor torque curve, calculate dynamic torque distribution coefficient;S4, according to distribution coefficient and energy proportion, resolve and synthesize load spectrum into mechanical and electric drive load spectrum;S5, introduce slope angle and soil adhesion coefficient, correct load amplitude;S6, input equivalent damage model, output component stress nephogram.The present application realizes the effective stress identification and fatigue damage assessment of key components of hybrid tractor under complex working conditions, improves the accuracy of stress calculation and the scientificity of equipment operation and maintenance.

The invention relates to a measuring device (10) for recording at least one force and / or torque curve resulting during the actuation of a control valve (32) by an actuating drive (34), the measuring device comprising a housing (11) which can be arranged between the control valve (32) and the actuating drive (34). The housing (11) is provided with a first and a second connecting wall (14, 16) and at least one connecting element (18) which connects the first and the second connecting wall (14, 16). The first connecting wall (14) is connected to the actuating drive (34) and the second connecting wall (16) is connected to the control valve (32). A connecting shaft (12) for connecting a drive shaft of the actuating drive (34) to an actuating shaft of a control valve (32) is arranged in a central through-opening (14c, 16c) in the two connecting walls (14, 16). The connecting shaft (12) penetrates the measuring device (10). The connecting shaft (12) is arranged at a distance from and freely rotatable with respect to the connecting walls (14, 16), and at least one resilient element is provided between the first connecting wall (14) and the connecting element (18), a measuring unit being provided in the housing (11). The measuring unit comprises at least two sub-measuring units. The first sub-measuring unit is in the form of a torque-sensor unit, and the second sub-measuring unit is in the form of a rotational-angle sensor unit. The sub-measuring units each comprise a signal transmitter and a signal receiver. The signal receivers are arranged in a common measuring module (20). The invention is characterized in that the first signal transmitter is arranged on the first connecting wall (14) and the second signal transmitter is arranged on the connecting shaft (12).

The present invention relates to a torque sensor device (10) for detecting torque applied to a shaft, a magnetic flux conductor device (16) for thereon, and magnetic flux conductors (16A, 16B), wherein the torque sensor device (10) has a magnetic device (15), a stator device (12), and a magnetic flux conductor device (16), wherein the magnetic flux conductor device (16) has a first magnetic flux conductor (16A) and a second magnetic flux conductor (16B), and the first magnetic flux conductor (16A) and the second magnetic flux conductor (16B) each have a first convergence surface (17) and each have at least one transmission surface (18), wherein the second magnetic flux conductor (16B) further has a second convergence surface (19) magnetically coupled to at least one transmission surface (18) of the second magnetic flux conductor (16B), wherein the first A flux conductor (16A) and a second flux conductor (16B) are designed and arranged relative to each other such that when the torque sensor device (10) is surrounded by an interfering magnetic field (MS), a first interfering flux fraction (FS1) and a second interfering flux fraction (FS2) of the second flux (F2) at least partially cancel each other out. The first interfering flux fraction is at least partially clustered in a first convergence surface (17) of the first flux conductor (16A) and transmitted to the magnetic sensor through at least one transmission surface (18) of the first flux conductor (16A). The second interfering flux fraction is at least partially clustered in a second convergence surface (19) of the second flux conductor (16B) and transmitted to the magnetic sensor (21) through at least one transmission surface (18) of the second flux conductor (16B).

The cylindrical shaft (110) of a bolt (101) is provided with a central bore (113), extending axially from the head (130) of the bolt (101 ) over at least a part of the axial length of the bolt (101). The bolt is provided with a measuring pin (120) located inside the bore (113) and extending substantially parallel to the shaft (110). The measuring pin (120) has an anchor end (122) fixated with respect to the shaft and has an opposite free indicator end (121 ). The bolt is further provided with a sensor element (140, 141 ) comprising a magnet (141 ) attached to the free indicator end (121 ) of the measuring pin (120) and a magnetic sensor (140) fixated with respect to the shaft (110) and aligned with the first sensor component (141 ).

A torque sensor device for detecting a torque applied to a shaft is disclosed. The torque sensor device has a magnetic arrangement, a stator arrangement and a flux guide arrangement, wherein the flux guide arrangement has a first flux guide and a second flux guide, and the first flux guide and the second flux guide each have a first collection surface and each have at least one transmission surface. The second flux guide has a second collection surface which is magnetically conductively coupled to the at least one transmission surface of the second flux guide. The first flux guide and the second flux guide are arranged relative to one another such that, if the torque sensor device is surrounded by a magnetic interference field, a first interference flux component a second interference flux component at least partially cancel one another out.

The invention discloses a vertical torque testing device which comprises a testing machine body, a stand column is arranged on the testing machine body, a testing main shaft is rotationally hung on one side of the top end of the stand column, a driving balance assembly for driving the testing main shaft to rotate, ascend and descend and keep balance is arranged at the top end of the stand column, and a counter-force arm is connected between the stand column and the testing main shaft at the same time; the impact wrench torque testing device further comprises a testing tool, the testing tool is arranged below the testing main shaft in a sliding mode, and when the testing tool is far away from the testing main shaft, actual torque testing of the impact wrench is conducted through the testing tool. When the testing tool slides to the position under the testing main shaft, the testing main shaft is pulled downwards to be matched with the testing tool for torque accuracy testing. The device is convenient to operate, the torque of tools such as an impact wrench is measured by adopting a reproduction method, errors are reduced, a tester can conveniently operate the tools such as the impact wrench, data are collected and processed in real time, and the rated torque of the wrench can be accurately measured.

The utility model discloses a moment on-line detection device convenient to operate, and relates to the technical field of moment detection, the moment on-line detection device comprises a mounting rack, the top of the mounting rack is provided with a press machine used for moment detection, the middle part of the mounting rack is fixedly provided with a mounting plate through bolts, and the mounting plate is used for mounting and limiting a detection mechanism; the fixed part is a fixed end of the detection mechanism and is used for installing a driving end of the detection mechanism; and the driving part is a driving end of the detection mechanism, is used for driving the detection part of the detection mechanism to rotate, and is matched with the pressure machine to detect the generated torque. According to the torque online detection device convenient to operate, a brake torque detection system high in automation degree is formed through cooperation of the installation frame, the press machine, the fixing piece and the driving piece, and compared with traditional detection through a torque spanner, tedious manual installation and operation steps are not needed, and the detection process is more efficient and faster.

This invention relates to a high-fidelity torque measurement device and method based on resonance suppression and measurement optimization, belonging to the field of high-precision detection technology for spacecraft, and includes a closed-loop measurement scheme in both hardware and software. The device comprises a high-precision triaxial air-bearing stage, a high-frequency torque measurement sensor system, a fiber optic inertial measurement unit, an active control actuator system, and a host computer control and data processing system. The method sequentially achieves precise locking of inertial parameters with variable weights for measurement innovations through pre-test calibration, completes wideband resonance active suppression based on inertial linkage during testing, and achieves mode-free signal purification through variational mode decomposition using multidimensional measurement optimization after testing. This invention overcomes the physical limits of traditional mechanical structures in broadening the measurement bandwidth, eliminates dynamic calibration model mismatch errors, and achieves high-fidelity and robust measurement of wideband dynamic torque, suitable for precise detection of high-frequency micro-vibration dynamic torque in spacecraft actuators.

The invention provides an inductance type force torque sensor. The inductance type force torque sensor comprises a coil array and a signal processing circuit board. The coil array comprises a plurality of groups of first detection coils and a plurality of groups of second detection coils, the first detection coils and the second detection coils are fixedly arranged on a first surface of the signal processing circuit board, and the signal processing circuit board comprises an inductance digital converter, an inductance chip, a capacitor and a controller; the controller is used for determining relative inductance according to the coil digital signal; determining deformation displacement generated after the to-be-measured object is stressed according to the relative inductance and the reference inductance; determining the force borne by the to-be-measured object according to the deformation displacement generated after the to-be-measured object is stressed; the torque borne by the to-be-measured object is determined according to the force borne by the to-be-measured object and the deformation displacement generated after the to-be-measured object is stressed, the coil signal transmission path is shortened, the inductance type force torque sensor is not prone to vibration interference, and therefore the measurement precision of the inductance type force torque sensor is improved.