26 results about "Skew angle" patented technology

The invention discloses a high-precision skewing process and equipment for a skewed slot stator core, and relates to the field of motor stators, and the high-precision skewing process comprises the steps: firstly obtaining the thickness and number of stator single sheets and a target skewed slot angle, and calculating a unit torsion angle; and then, by establishing a deviation analysis model of the thickness of a stator single sheet and the total length of an iron core, correcting a unit torsion angle to obtain a corrected torsion angle capable of compensating an inherent system error of step lamination, when equipment executes skew, controlling the core rod to synchronously feed and rotate according to the corrected torsion angle and the thickness of the single sheet, and withdrawing after lamination is completed, according to the technical system, precise closed-loop control over the skew angle of each punching sheet is achieved, the technical system thoroughly eliminates the angle accumulated deviation existing at the laminating end point in a traditional method, it is ensured that the actual skew angle of the final iron core is highly matched with the designed target, and therefore the extreme precision and batch production consistency of the skewed slot stator iron core are fundamentally guaranteed.

This invention relates to the field of blade crown structure technology and discloses a method for designing the oblique cut angle of crowned blades. By defining the direction and magnitude of the oblique cut angle of the crowned blade and defining evaluation parameters for the rationality of the static design of the crowned blade, simulation models of crowned blades with different sizes and directions of oblique cut angles on the crown contact surface are constructed. Static analysis is performed on the simulation models, and the oblique cut angle and magnitude of the contact surface are determined based on the static evaluation parameters. This invention solves the problems of excessive static stress in the blade due to pre-twist during assembly of crowned blades and crown misalignment due to rubbing. In particular, it addresses the following issues: for short blades with crowns and small aspect ratios and large torsional stiffness, even a small pre-twist angle design can still result in excessive stress. Reducing the pre-twist angle makes it difficult to ensure that the pre-twist angle tolerance meets requirements during processing and assembly. Using traditional improvement methods requires significant modifications to the blade, limiting engineering applications and affecting other blade performance.

This invention discloses a test bench for detecting the skew angle of tapered roller bearings, comprising a base, and a drive device, a test shaft system, an axial force loading device, a radial force loading device, a torque loading device, a test chamber, and a measurement system mounted on the base. The drive device provides rotational torque to the shaft system. The test shaft system supports and stabilizes the test tapered roller bearing and the bearing under test. The drive device, axial force loading device, radial force loading device, torque loading device, and measurement system are connected in series in the entire test bench. The axial force loading device provides axial force to the test tapered roller bearing and the bearing under test in the test shaft system. This invention can effectively simulate the combined radial force-axial force-torque load state of tapered roller bearings, enabling non-destructive measurement of the skew angle of tapered roller bearings.

This invention discloses a method, apparatus, and related products for measuring the tilt angle of a camera assembly, relating to the field of camera inspection technology. The method includes: acquiring reference alignment parameters; establishing a parallel reference relationship between the device's reference edge and a parallel calibration line on a calibration medium to complete test reference calibration; acquiring a preview image of the parallel calibration line; superimposing an angle reference line with a preset tilt angle onto the preview image to generate an angle comparison view; extracting the imaging features of the parallel calibration line from the angle comparison view; and comparing and analyzing the imaging features with the angle reference line to obtain the camera assembly tilt angle. This solution improves inspection efficiency, reduces costs, and enhances compatibility.

The invention discloses a power transmission conductor wind deflection angle and deflection angle monitoring method based on an improved liquid neural network, and the method comprises the steps: respectively arranging a tower top and a Beidou III attitude measurement device at a power transmission tower and a conductor suspension point, and constructing a high-precision baseline structure; the method comprises the following steps: receiving a Beidou III satellite carrier signal by using double Beidou III satellite antennas, and extracting a carrier phase, a satellite elevation angle and an azimuth angle; constructing a carrier phase double-difference observation equation based on the extracted information, and establishing an attitude angle mathematical model; a reinforcement learning framework driven by a liquid neural network is adopted to perform high-precision fitting and solving on an attitude angle model, the framework designs a multi-phase fusion mechanism to effectively avoid falling into local optimum, and meanwhile, a proposed multi-path parallel mechanism meets the requirement of real-time monitoring; and calculating a wind deflection angle and a deflection angle of the conductor according to the attitude angle. The method does not need a ground-based augmentation station, directly utilizes Beidou III satellite signals to realize millimeter-level attitude perception, and is suitable for all-weather real-time monitoring of the wind deflection angle and the deflection angle of the power transmission line.

This invention relates to the field of bridge construction technology and discloses a positioning device for precast box girder expansion joint embedded reinforcement. The device includes two guide rails arranged parallel to each other. Each guide rail has a sliding seat at its top, and each sliding seat has a fixed telescopic column at its top. A rotating seat is rotatably mounted on the top of each telescopic column. A telescopic support beam connects the two rotating seats, and multiple support rods are connected to the bottom of the telescopic support beam. This invention enables precise movement and positioning of the expansion joint embedded reinforcement in four dimensions: longitudinal, angular, vertical, and transverse. It avoids the low installation accuracy of traditional embedded reinforcement processes, which necessitates welding and re-welding or repeated reinforcement correction, thus affecting bridge construction progress. It enables the positioning and installation of precast expansion joint embedded reinforcement in box girders with different skew angles, eliminating the need to weld and fix the precast expansion joint embedded reinforcement to the main reinforcement of the box girder top slab, thus avoiding quality defects such as weld burns and weld beads in the main reinforcement, which affect structural durability and load-bearing capacity.

This application discloses an easy-to-assemble and disassemble bridge construction unloading block, belonging to the technical field of bridge construction equipment. It includes an upper support, a lower support, left and right side supports, and tie rods. The left and right side supports are both composed of upper and lower modules. The inner and outer sides of both the upper and lower modules are vertically arranged. The inclination angle of the lower module's bottom surface is the same as the inclination angle of the lower support's side wall. One side of the upper top surface is an upward-facing inclined contact surface, and the other side is a horizontal bearing surface. A first blocking structure is provided between the lower module's bottom surface and the lower support's side wall. The inclination angle of the upper module's top surface is the same as the inclination angle of the upper support's side wall, and the shape of the lower bottom surface matches the shape of the lower module's top surface. Tie rods are inserted between the upper modules. A pin is inserted between the lower and upper modules to limit their relative movement. This design transfers the pressure on the upper support to the horizontal bearing surface, reducing the stress on the tie rods and lowering the probability of deformation, making the subsequent disassembly of the unloading block faster and more efficient.

This invention discloses an online measurement method for the skew angle of a spring hanger rod, which falls under the category of pipeline support and hanger inspection and can be widely applied in the power and energy fields. The method includes the following steps: (1) A baffle is horizontally installed at the bottom of the steel beam, and a set of laser rangefinders are installed on both sides of the pipe clamp bolt. The first set of laser rangefinders can swing freely around the pipe clamp bolt and can always remain vertical under its own weight. The second set of laser rangefinders is fixedly installed on the pipe clamp bolt, with the installation direction parallel to the direction of the spring hanger rod; (2) The vertical distance from the pin shaft center to the bottom of the baffle and the lower edge of the spring hanger cover are measured respectively; (3) The measurement data of the two sets of laser rangefinders are read in real time and imported into the computer for processing. The skew angle of the spring hanger rod is calculated according to the skew angle calculation formula. The method is simple in principle and easy for technicians to master. After the measuring equipment is installed once, remote real-time monitoring can be realized, which greatly reduces the labor cost.

The application discloses a kind of cross-coordinate system dynamics modeling methods of angle misalignment fault rotor, comprising: according to the axis feature of rotor, the rotor that occurs angle misalignment fault is divided into connection substructure, left rotor substructure, right rotor substructure, wherein, left rotor substructure and connection substructure, right rotor substructure are located in different coordinate system respectively;In respective coordinate system, the motion differential equation of left rotor substructure, right rotor substructure is established;According to the node position of connection substructure, the motion differential equation of left rotor substructure, right rotor substructure and the cross-coordinate system stiffness equation of connection substructure are grouped, and the whole rotor cross-coordinate system motion differential equation is formed.The rotor model established by the modeling method of the application can accurately simulate the axis feature after rotor angle misalignment fault and is simple and fast.

This invention discloses a skew protection device for a shipbuilding gantry crane. The device includes a lower connecting seat, a fork, a connecting rod support assembly, a connecting rod assembly, a pointer, a pointer support slide, a dial, and a limit switch. One end of the fork is rotatably mounted on the connecting seat. One end of the connecting rod assembly is rotatably connected to the fork. The connecting rod support assembly supports the connecting rod assembly. The pointer is rotatably mounted on the other end of the connecting rod assembly. The pointer support slide supports the pointer's sliding motion. The dial is located at the front of the pointer to display the pointer's deflection angle. The limit switch is located on the dial to indicate the skew angle. This invention collects rotational motion and filters out forward / backward and left / right tilting motions, avoiding interference and effectively improving the crane's safety.

The invention relates to the technical field of bearing measurement, in particular to a method and device for measuring roller deflection of a crossed cylindrical roller bearing and a storage medium. The invention discloses a method for measuring roller deflection of a crossed cylindrical roller bearing, which comprises the following steps of: firstly, carrying out fluorescent coating on a roller to be measured in the bearing, and blackening other rollers and an inner ring raceway to realize optical calibration; enabling the linear laser beam to pass through double detection holes which are obliquely arranged in parallel on the outer ring of the bearing and vertically enter two ends of the calibration roller; a roller revolution time interval and a two-end irradiation time difference are extracted by collecting reflected laser signals; therefore, the skew angle theta, the revolution angular velocity and the rotation angular velocity of the roller are accurately calculated by combining an established pure rolling point energy loss minimization model; non-contact and high-precision measurement of the dynamic posture of the roller in the crossed cylindrical roller bearing is achieved, the problem that in the prior art, skew data of the roller is difficult to obtain under the real working condition is solved, and technical support is provided for bearing state monitoring, assembly optimization and performance improvement.

The present application relates to automatic loading system technical field, especially to a kind of side automatic loading method and system of self-adapting height.A kind of side automatic loading method of self-adapting height, including S1, control system initialization;S2, automatic loading equipment drives to carriage side, after detection, goods is lifted to suitable position;S3, detect the skew angle of truck, reserve the area that cannot load goods;S4, push goods to compartment face and detect whether it is normal unloading;S5, repeat S2-S4 step until full load.The present application is detected by using multiple groups of sensors, control equipment operation and carry out feedback regulation, to reach the purpose of loading equipment height self-adapting, solve the problem of automatic loading equipment running stability in the process of loading in different car type truck caused by different car height, width and truck parking offset and other complex situations, improve efficiency, reduce cost, reduce high demand for vehicle limit, improve the adaptability of automatic loading.

The utility model relates to a kind of motor rotor structure and motor, including rotor lamination and keyway group, the skew angle between rotor lamination is θ, rotor lamination includes lamination body, and coaxially set up central through-hole on lamination body;Keyway group includes first keyway, second keyway, third keyway and fourth keyway set up on the inner wall of central through-hole, with first keyway as reference, the angle of second keyway, third keyway and fourth keyway relative to the rotation of first keyway is 90 °- θ, 180 °-2 θ, 270 °-3 θ respectively, and the bottom surface of each keyway is respectively set up with the mark groove of different shape.In assembly, make the multiple rotor laminations of sequentially stacked with predetermined keyway sequence and connected with anchor key, realize the rotor structure with different skew angles after assembly for the rotor lamination of same structure, so only need to design and produce a set of lamination mould, not only reduce the period of lamination mould design and production, and greatly reduce the cost of production.

The invention discloses a device for testing hydrodynamic performance of a boat rear pump jet propeller with a variable oblique flow angle, and relates to the field of hydrodynamic testing of underwater vehicles. Comprising a supporting and connecting mechanism, an aircraft model, a pump-jet propeller model, a variable oblique flow angle adjusting mechanism and a multi-channel cooperative measurement system. The interior of the aircraft model is divided into a plurality of functional cabin sections along the axial direction; the pump-jet propeller model is mounted at the tail part of the aircraft model; the variable oblique flow angle adjusting mechanism is arranged at the front cabin section in the aircraft model, a worm and gear mechanism is adopted to be matched with an asymmetric plane thrust bearing, and continuous, accurate and lockable oblique flow angle adjustment of the aircraft model relative to the incoming flow direction is achieved; the multi-channel collaborative measurement system comprises three force measurement units which are used for respectively and synchronously measuring hydrodynamic loads borne by a pump-jet rotor, a stator-conduit and the whole aircraft model. According to the invention, physical simulation and fine measurement of the oblique flow-boat body-pump jet propeller coupling working condition are realized.

The invention provides large-span skew bridge integrated bridging equipment and a construction method thereof.The large-span skew bridge integrated bridging equipment comprises a first front supporting leg, a second front supporting leg, a middle supporting leg and a tail supporting leg which are arranged on the lower portion of a main beam from left to right, a first main crown block and a second main crown block are slidably connected to the top of the main beam, and an auxiliary crown block is further arranged on the side close to the tail supporting leg; the lower portion of the first main crown block and the lower portion of the second main crown block are connected through a rotary lifting appliance which is used for completing lifting of bridge components. The adaptability to large-crotch skew bridge construction is greatly improved, and the large-crotch skew bridge construction device can adapt to variable skew angles and is high in structural strength, high in stability and high in construction efficiency.

Method and apparatus of various embodiments of a planing boat or vehicle supported by a system of three cambered planing surfaces, comprising two transversely set apart forward surfaces generating on their inner edges two counter-rotating tip vortices resulting in an ascending flow further aft downstream of the gap between these two forward surfaces, and one center aft surface, which sections are displaced higher vertically and inclined nose-dive relatively sections of the forward surfaces by the height and slope angle of the ascending flow at their location, so that the angles of deadrise and moduli of negative angles of inclination of the aft surface gradually increase along the span from the center plane outwards, embodying in special angular and spatial relative arrangement of said three planing surfaces and configuration of the aft surface with its half-planes curved upwards and twisted downwards in a substantially hyperbolic manner.

The application discloses a design method of a single-axis rotation modulation inertial navigation system based on a hemispherical resonator gyro, and comprises the following steps: establishing a standing wave angular rate ideal model of the hemispherical resonator gyro, constructing an angular rate measurement model based on the model, and obtaining an angular rate error model by solving an error; determining a standing wave angular rotation condition to be met under uniform rotation based on the integral characteristics of the angular rate error model; based on the standing wave angular rotation condition, installing each hemispherical resonator gyro's sensitive axis and the rotation modulation axis of the base coordinate system in a skew manner according to the scale factor of the hemispherical resonator gyro, and determining the value condition of the skew angle; on the basis of completing the skew angle configuration, adopting a two-position intermittent single-axis rotation scheme, and determining rotation parameters; setting the ADB phase and control strategy of the stop stage, determining the installation configuration of the hemispherical resonator gyro sensitive axis and the accelerometer, so that the standing wave angle always meets the standing wave angular rotation condition in the rotation process, thereby eliminating the ADB cumulative error.

The embodiment of the invention relates to the field of bridge assembly, in particular to a control method and device suitable for a double-pier-column bent cap rotating device. According to the method and device, the inclination angle and stress data of the double pier columns are obtained through monitoring, the space posture and stress change of the double pier columns in the rotation process are obtained in real time, the deviation of the double pier columns can be recognized in real time in combination with the target inclination angle, the inclination of the double pier columns can be corrected according to the determined hydraulic adjustment amount of the rotation executing mechanism, and the rotation accuracy of the double pier columns is improved. The stability of the double pier columns in the turning process is ensured; the real-time rotating speed of the rotating device is compared with the target rotating speed, the tensioning force adjustment amount is determined, real-time correction of the tensioning force in the rotating process can be achieved, and it is ensured that the rotating speed of the rotating device is stable. Compared with a traditional method, overall reflection of the stress conditions of the double pier columns and the swivel device is achieved through multi-dimensional monitoring data, inclination of the double pier columns is corrected in real time, the tensioning force of the swivel device is corrected, real-time linkage of the monitoring data and the swivel control process is achieved, and swivel control is stable and accurate.

The utility model discloses a shield tunneling machine cutter with high wear resistance, and relates to the technical field of shield tunneling machine cutters. The shield tunneling machine cutter with the high abrasion resistance comprises a cutter shaft, a cutter hub is in key connection with the outer portion of the cutter shaft, a cutter ring is welded outside the cutter hub, the cutter ring comprises a cutting edge and oblique angles symmetrically arranged at the left end and the right end of the cutting edge, and abrasion-resistant welding spots are welded to the surfaces of the oblique angles in a rectangular array mode. In order to overcome the defect that the surface of the cutter of the shield tunneling machine is very easy to wear, a plurality of circles of cutter tooth groups are arranged, the number of contact points of cutter tooth cutting edges and rock soil is increased, cutting force is dispersed, the wear speed of the cutting edges is reduced, the coverage area of wear-resistant materials can be increased through ceramic welding layers, wear-resistant welding spots and wear-resistant welding rods, and the service life of the cutter is prolonged. The abrasion resistance of the surface of the cutter is guaranteed through the inner and outer layered structure, toughness support is provided for the cutter through the inner layer, and embrittlement of the abrasion-resistant layer is prevented.

The embodiment of the application provides a kind of conveying line tray posture self-adapting shaping control method, it is related to automated logistics conveying equipment technical field, method includes at the entrance of shaping area along the direction of conveying interval arrangement three groups of sensors, the skew angle and skew direction are calculated by detecting the time difference of tray front end reaching each sensor;Skew angle is compared with threshold value, and divided into three grades of slight skew, moderate skew and serious skew;According to skew grade, corresponding shaping strategy is executed;In the shaping process, the displacement sensor and pressure sensor are used to monitor the push plate stroke and push force in real time, and when the push force exceeds the safety threshold and the displacement change is less than the set threshold, it is determined that the card is stuck and the machine is stopped for protection.The present application realizes the accurate detection of tray skew posture, on-demand hierarchical shaping and safety protection, and improves the shaping efficiency and reliability.

To provide a rotor core having a skew structure that suppresses damage due to rotational stress, etc. [Solution] The rotor core 1 of the present disclosure is a rotor core 1 having a skew structure, the rotor core 1 comprises a plurality of core plates CP having the same shape, and a plurality of core parts formed by stacking the plurality of core plates CP and having a plurality of magnetic poles MP, the plurality of core parts of the rotor core 1 are offset in the circumferential direction of the skew angle and arranged in the direction of the rotation axis of the rotor core 1, the core plate CP comprises a first hole H1 provided on a first circle C1 centered on a position RA corresponding to the rotation axis, and a second hole H2 provided on the first circle C1, the angle from a predetermined reference line RL to the first hole H1 at each magnetic pole MP is defined as the first angle, the angle from the reference line RL to the second hole H2 is defined as the second angle, and the difference between the second angle and the first angle corresponds to the skew angle.

The present application relates to the technical field of bridge construction, and discloses a method for recycling bridge slabs of simply supported beam bridges with different skew angles and a bridge, comprising the following steps: using bridge slabs with a skew angle of β, implementing the part below the bent cap and abutment of the lower structure of the simply supported beam bridge with a skew angle of α according to a predetermined scheme, wherein the width of the bent cap of the middle pier is determined according to the laying requirements, a triangular block is added at the end of the bridge slab at the abutment, a expansion joint is formed between the end of the bridge slab and the triangular block and the back wall of the abutment after the triangular block is added, the width of the abutment cap is determined according to the laying requirements, and the calculation method of the added value b of the bent cap of the middle pier and the abutment cap is b=(cotβ-cotα) / 2. The method realizes the recycling of bridge slabs with different skew angles without changing the predetermined lower structure of the bridge. The method can significantly save the engineering cost, realize the recycling of the bridge slabs, and reduce the construction waste caused by abandonment, and realizes green environmental protection.

One embodiment includes positioning a magnetic tape head having at least three servo readers such that a first of the readers is located within a first servo band of a magnetic tape, a second of the readers trailing the first reader is located within the first servo band, and a third of the readers is located within a second servo band of the tape. A lateral position of the head is measured, and a head skew angle is measured. The lateral position and the skew angle of the head are varied while recording y-position values of the first and second readers and the skew angles measured using the first and third readers Nonlinearity values are calculated at discrete y-positions over a range of the servo pattern in the first servo band using at least some of the measured y-positions and skew angle measurements. The nonlinearity values are stored and / or output.

The invention discloses a high-performance wide flat river-sea direct ship form optimization method and system based on simulation driving design, and relates to the technical field of high-performance ship design. The method comprises the following steps: acquiring characteristic parameters of a mother ship; the characteristic parameters comprise a bow waterline inflow angle, a skeg inclination angle, a skeg width and a stern forward concave angle; geometric modeling processing is carried out based on the characteristic parameters, and multiple candidate ship type schemes are obtained; resistance prediction and slamming load simulation are carried out on the multiple candidate ship type schemes so as to carry out ship type performance evaluation, scheme optimization is carried out by adopting an improved PDPSO algorithm, and an optimized ship type scheme is obtained. According to the method, the full-process coverage from ship type generation to performance optimization can be realized, so that the iterative optimization and design decision of the high-performance wide flat river-sea direct ship are supported.

The present application relates to the technical field of bridge offshore foundation construction, and particularly relates to a kind of offshore V-type pier concrete box structure optimization construction method of cap, including pre-hoisting to box, second stage hoisting checking analysis is carried out in pre-hoisting process, load distribution uniformity is calculated, and load distribution and hoisting state of box hoisting are reflected by combining with the inclination angle of box, whether the hoisting stability condition needs to be verified is determined;According to the stability state discriminant index variation trend and the stability of box hoisting state whether the attitude stability degree of box meets the landing requirement is predicted;According to several horizontal theory deviation, the matching degree of steel casing and the reserved hole of sleeve is determined;According to the steel casing with deviation, the minimum safety margin of box and steel casing landing is calculated, and whether the landing risk existing in current stable state is within adjustable range is determined by combining displacement fluctuation. The present application carries out accurate positioning and optimized installation of box installation through box structure optimization and lifting checking analysis.

The invention discloses a configuration design method for an unmanned aerial vehicle flying in a wide speed domain. The method comprises the following steps: acquiring real-time flight state parameters of the unmanned aerial vehicle; on the basis of a preset pneumatic-structure-environment coupling optimization model, the optimal wing oblique angle matched with the current flight working condition is calculated; a wing driving device is controlled according to the optimal wing inclination angle, and switching of the wing inclination angle is achieved; dynamically sensing the flight state change in the flight process, updating the optimal wing inclination angle in real time, and adjusting the wing attitude; according to the method, the flight state parameters are sensed in real time, the optimal wing inclination angle is dynamically calculated based on the pneumatic-structure-environment coupling optimization model, self-adaptive adjustment of the wing attitude is achieved, and the problems that an existing unmanned aerial vehicle is narrow in speed domain coverage, poor in task adaptability and difficult to consider both stability and structural safety are solved. And the full-speed-domain flight performance and the multi-scene adaptability of the unmanned aerial vehicle are improved.