52results about How to "Meet torque requirements" patented technology

The invention relates to an automatic assembling platform, in particular to an automatic assembling platform for an external ball joint assembly of an automobile pull rod. The automatic assembling platform for the external ball joint assembly of the automobile pull rod comprises an index plate, an electric control cabinet, a follower fixture, a ball pin press-in device, a cover plate loading detecting device, a cover plate spin rivet pressing device, a ball pin swinging torque detecting device, a dustproof cover press-mounting device and the like, wherein the index plate is mounted on a framemesa; and the ball pin press-in device, the cover plate loading detecting device, the cover plate spin rivet pressing device, the ball pin swinging torque detecting device and the dustproof cover press-mounting device, which are respectively connected with the electric control cabinet by leads, are uniformly distributed on the frame mesa on the periphery of the index plate in an annular way. The assembling beat of the ball joint assembly can reach 25 seconds per piece while the automatic assembling platform is in working; the yield is increased by the torque detecting device; and problems of higher rejection rate, serious influence on enterprise benefits and incapability of satisfying requirements on the industrial production of the automobile ball joint in a traditional assembling methodare solved. The automatic assembling platform for the external ball joint assembly of the automobile pull rod, provided by the invention, is especially suitable for enterprises to use during assembling the external ball joint assembly of the automobile pull rod in an industrialized way.

The invention discloses an excitation structure and an alternating-current and direct-current excitation control method for a frequency-variable alternating-current starting power generation system. The excitation structure consists of an open circuit-type stator three-phase winding and a three-phase bridge-type converter, wherein the two ends of the three-phase bridge-type converter are connected. The method comprises the following steps of: starting an initializing process; coordinately controlling the output vector of each converter; selecting a proper comprehensive voltage vector; generating a required three-phase alternating-current excitation voltage in the three-phase winding so that a magnetizing exciter works in a rated output state to provide enough excitation current for the starting and the operation of a main power generator; when the rotating speed of a motor reaches an excitation switching point, switching from a three-phase alternating-current excitation mode to direct-current excitation according to a rotating speed feedback signal, wherein the structure of the winding of the magnetizing exciter does not need to be changed by an external switch in the switching process; and making the three-phase alternating-current winding equivalent to a direct-current serial structure by directly controlling each phase of winding current respectively by utilizing the bridge arms of two converters. Therefore, a direct-current excitation function is realized.

The invention provides a cage nut assembly having a nut member and a cage member. The nut has a threaded aperture therethrough. The cage is capable of encaging the nut such that the nut has a limited range of movement within the cage in at least one dimension. The cage has an aperture therein sized and located to allow access to the threaded aperture of the nut within the range of movement of the nut. The cage has a plurality of protrusions, such as dimples or tabs, extending therefrom. At least one of the protrusions is formed in halves which abut against one another to define a seam therebetween. The protrusions are capable of being welded to a mating surface to secure the cage to a mating surface, and, substantially contemporaneously, the halves of the at least one protrusion are capable of being welded together along the seam.

The invention relates to the field of motors and discloses a compressor and a permanent magnet motor thereof. The permanent magnet motor comprises a stator and a rotor, wherein the stator comprises a stator core and a stator winding; the stator core comprises multiple stator teeth, stator slots and a rotor containing part; the stator teeth are distributed in the peripheral direction of the stator at intervals; each stator slot is formed between two adjacent stator teeth; the rotor containing part is defined by inner end edges of the multiple stator teeth; the stator winding is arranged in the stator slots; the rotor can be rotationally arranged in the rotor containing part relative to the stator; the rotor comprises a rotor core; multiple magnet slots are formed in the rotor core in the peripheral direction at intervals; the rotor further comprises multiple magnetic parts which are respectively arranged in the multiple magnet slots; the distance between the rotation center of the rotor and an outer edge of the rotor containing part is Ris; the distance between the rotation center of the rotor and an outer edge of the rotor core is Ror; Ris-Ror is greater than or equal to 0.9 mm and less than or equal to 2.2 mm.

A fastening system for attaching a cover to an underground vault having a bolt with threads and a composite fiber reinforced polymer nut having a thread engagement portion extending through the nut which will fail in shear after the bolt is inserted before the nut and bolt seize. The fastening system can also include a nut retainer sized to allow the nut to float within the retainer.

The invention discloses a hybrid permanent magnet memory starter/generator and an operation method thereof, and belongs to the field of permanent magnet synchronous motors. Hybrid permanent magnet memory starter/generator comprises a hybrid permanent magnet rotor, a stator iron core, armature windings, air gaps and a rotating shaft. Two sets of windings are wound on the stator iron core in the same groove and in the same direction to jointly form an armature winding which is also used for adjusting magnetism; the two sets of windings work in a series or parallel state as required; a high-coercivity permanent magnet, a low-coercivity permanent magnet and a triangular magnetic barrier are arranged on the hybrid permanent magnet rotor; two tangentially magnetized low-coercive-force permanent magnets and two radially magnetized high-coercive-force permanent magnets are arranged below each magnetic pole of the hybrid permanent magnet rotor to form a W-shaped structure; and a triangular magnetic barrier is arranged at the junction of each low-coercivity permanent magnet and each high-coercivity permanent magnet. The motor adopts alternating-current pulse magnetic adjustment; when magnetic adjustment is needed, the armature winding is used for applying magnetic adjustment pulses; the permanent magnets are placed on the motor rotor; and the motor is simple in structure, easy and convenient to machine and manufacture, and the technology is mature.

The invention relates to the field of gas meters, and particularly discloses a small magnetic transmission structure of a diaphragm gas meter. The small magnetic transmission structure comprises a sealing gasket, a shaft sleeve, an outer magnetic set and an inner magnetic set, the inner magnetic set is located on the inner side of the shaft sleeve, the outer magnetic set is located on the outer side of the shaft sleeve, the outer magnetic set comprises a first outer magnetic sleeve, a second outer magnetic sleeve and an outer magnet, the outer magnet is an annular cylinder, and the first outer magnetic sleeve and the second outer magnetic sleeve are respectively clamped at two ends of the outer magnet; the inner magnetic set comprises a first inner magnetic sleeve, a second inner magnetic sleeve and an inner magnet, the inner magnet is also an annular cylinder, and the first inner magnetic sleeve and the second inner magnetic sleeve are clamped to the two ends of the inner magnet respectively; and the outer magnet is made of a ferrite material, and the inner magnet is made of a neodymium iron boron material with stronger magnetic force. The magnetic transmission structure with the inner magnet made of the neodymium iron boron and the outer magnet still made of the ferrite material is adopted, the torque required by magnetic transmission and the transmission space requirement of the small diaphragm gas meter can be met, the ferrite material is reserved in the outer magnet, and the material cost of the outer magnet can be reduced by reducing the size of the outer magnet.

An inner circulation ball screw component for an airplane electric brake. The inner circulation ball screw component comprises a nut, a screw, balls and returning devices, wherein the screw is located in the nut, spiral ball rollaway nests are disposed between the screw and the nut, one returning device is mounted between every two rollaway nests on the screw, balls enter each returning device from one rollaway nest and return to the initial rollaway nest through a ball returning groove in the returning device, the balls rolls in a closed inner circulation loop formed by the screw, the nut and the returning devices in a circulation manner, the balls are allowed to move linearly along with the screw relative to the nut, and the working travel of the screw is increased. The inner circulation ball screw component has the advantages that large moment can be transmitted to satisfy the moment requirements of the airplane electric brake, the internal space of the screw is sufficient, and electric brake parts can be mounted in a screw inner hole.

The invention discloses a blade-type pneumatic motor, comprising a housing, an end cover and a rotor. The housing and the end cover are connected in butt-covering manner; a rotor mounting cavity is formed between the housing and the end cover; the rotor is mounted in the rotor mounting cavity; one axial end of the rotor is a rotation output end; the peripheral edge of the rotor is provided with blade grooves in the diameter direction; the blade grooves are distributed in the periphery of the rotor; blades are arranged slidably in the blade grooves. The blade-type pneumatic motor is characterized in that the rotor and the rotor mounting cavity are coaxial, the peripheral sidewall of the rotor mounting cavity is provided with a working chamber concaved outward and used for a flow to pushingthe blades to work; the outer wall of the working chamber is in smooth curve shape; the length of the blades is greater than a maximum distance from openings of the blade grooves to the outer wall ofthe working chamber; one end of the working chamber is provided with intake holes; the wall of the working chamber, in front of the intake holes in the rotation direction of the rotor, is provided with exhaust holes. The blade-type pneumatic motor has the advantages of small vibrations, better overall stability and higher output torque.

The invention discloses an electric automobile double-motor driving system and a power coupling comprehensive control method thereof. The electric automobile double-motor driving system is adopted, through a power coupling mode of a planetary gear mechanism, torque and rotational speed coupling under different working conditions of the electric automobile driving system is achieved, the double-motor driving system has a power-split type transmission regulating function capable of realizing continuous speed regulation and torque regulation, working states of electric automobile motors can be effectively adjusted, the motor efficiency is improved, according to the power coupling comprehensive control method, a working mode is matched under the condition that a demand rotating speed and torque are certain, an economy control strategy is established, rotating speeds and torque of the double motors are distributed, the double motors can work in a high energy efficiency state, and a comprehensive shifting control strategy of medium-low load economical shifting and medium-high load power shifting is realized.

A fastening system for attaching a cover to an underground vault having a bolt with course threads and a composite fiber reinforced polymer nut having a threaded portion extending through the nut which will fail in sheer before the nut and bolt seize. The fastening system can also include a nut retainer sized to allow the nut to float within the retainer.

The present invention discloses a load terminal of a high-voltage direct-current relay. The load terminal comprises a connection terminal and a lead-out terminal arranged on a relay ceramic cover, thehead of the lead-out terminal is provided with a holding hole, the lower end of the connection terminal is adaptively inserted into the holding hole and is in screw-thread fit connection with the holding hole, a pressing block is in brazed connection at the mouth of the holding hole of the lead-out terminal through soldering lug, the connection terminal is provided with a spacing portion matchedwith the pressing block, the matching of the pressing block and the spacing portion can press the lower end of the connection terminal into the holding hole to prevent the connection terminal from dropping off. The maximum torque value of the connection terminal is large to allow connection terminals with various thread specifications to meet the torque requirements when the connection terminals are used, the lower end of the connection terminal is pressed into the holding hole to prevent the connection terminal from dropping off through matching of the pressing block and the spacing portion,the connection terminal can be vertically connected with the lead-out terminal through screw-thread fit of a lower thread portion and a small hole, and therefore, the load terminal of the high-voltagedirect-current relay has good use reliability.

The invention relates to a filter capacitor. The filter capacitor comprises a capacitor case, a capacitor core, two extraction electrodes and an insulated torque resistant plate, the two extraction electrodes are connected with upper and lower metal spraying layers of the capacitor core respectively in a welding mode through copper sheets, the extraction electrodes are provided with positioning portions with integrated structures and externally connected portions, a positioning hole which is matched with the positioning portions of the extraction electrodes is mounted on the torque resistant plate, during installation, the positioning portions of the electrodes penetrate through the positioning hole, and the entire torque resistant plate and the positioning portions of the electrodes are filled, sealed and fixed through a capacitor insulation packaging material. The filter capacitor has the advantages that the structure is reasonable, the effect is ideal, and the manufacturing is convenient.

The invention discloses a swivel with top hydraulic driving, which is used for a top driving device of well drilling equipment, and consists of a main body structure, a hydraulic motor, a decelerating device, a sealing mechanism and a fastener, wherein the main body structure of the swivel with top hydraulic driving comprises a box body, a box cover, a lifting bail, a lifting bail pin, a wash pipe and gooseneck assembly and a central stem. A top hydraulic driving form and a three-stage decelerating structure are adopted for the swivel; the torque requirement at a low speed can be met; greater torque output is provided; moreover, the swivel has obvious advantages in aspects of the structural design of a component, well drilling shock resistance, the spark prevention of a working field, and the like; moreover, the structure is simple, and the production-manufacturing cost is lower.

The invention discloses an unsealing device and method for a sealed packaging container. A moving shaft is controlled through a controller; a square column key mounted on the moving shaft is matched with a coupling; rotary location of the square column key is achieved through a locator and a locating column; fully-automatic vacuum unsealing can be achieved; and the problems that other impurities are mixed in the unsealing process, and samples from the moon are contaminated are avoided. According to the unsealing method for the sealed packaging container, in the process when a cover body is rotated to be opened, the rotation moment, namely the unsealing moment, of the sealed packaging container is obtained through measurement of rotation motion of the moving shaft; the sealing performance and the leak rate of the sealed packaging container are calculated through the unsealing moment; and performance evaluation of the sealed packaging container is achieved.

The invention relates to a fabric sanding machine, in particular to a sanding roller core for the fabric sanding machine. The sanding roller core is characterized in that a roller body is included, a through shaft is arranged in the roller body, multiple support flanges are fixedly installed on the through shaft in a penetrating mode, and the outer edges of the support flanges are in interference fit with an inner hole of the roller body. The two ends of the roller body are fixedly provided with shaft sleeves, and the outer edges of the shaft sleeves are in interference fit with the inner hole of the roller body. The outer edges of the shaft sleeves and the outer edges of the support flanges are each provided with at least one annular groove, and the annular grooves divide the outer edge of the corresponding shaft sleeve into at least two convex annular surfaces. The invention further discloses a method. The method comprises the steps that 1, the through shaft, the support flanges and the shaft sleeves are prepared; 2, the support flanges and the shaft sleeves are fixed to the through shaft to form a support assembly; 3, the support assembly is pressed into the roller body along the axis; 4, balance is corrected. The sanding roller core has the advantages that the weight is small; the rotating inertia generated during rotating is small, and energy consumption is low; the dynamic and static balance properties are better.

The invention discloses a tracked vehicle steering system and method. The steering system is a four-wheel independent drive system, two front wheels are driven by a drive motor and a reducer, two rearwheels are driven by a drive motor and a steering coupling device, and the power of the two steering coupling devices is supplemented by a steering motor. The system and method of the invention solvethe problem of insufficient torque when steering at low speed and small radius under the condition of small motor volume by means of four-wheel independent driving, and solve the problem that the motor power of the outer motor is low when steering at high speed and large radius by means of steering motor to carry out power supplement to the steering coupling device.

The invention discloses a liquid hydrogen high-temperature superconducting motor full-electric propulsion system, and relates to the technical field of ships. According to the system, a liquid hydrogen storage and conveying module stores liquid hydrogen and conveys the liquid hydrogen to a power propulsion module, a hydrogen-air fuel cell power generation module and a superconducting cable power transmission and transformation module for cooling so as to ensure the working performance of each module; and the liquid hydrogen cools all the modules and then enters a heat exchanger for heat exchange to form normal-temperature hydrogen to be conveyed to the hydrogen-air fuel cell power generation module to serve as fuel, and the hydrogen-air fuel cell power generation module generates power through an electrochemical reaction of hydrogen and air and supplies power to the power propulsion module through the superconducting cable power transmission and transformation module. According to thesystem, multi-energy-state management is carried out on the whole electric propulsion system, the motor power, the motor efficiency and the energy use efficiency can be greatly improved, the ship bodyspace can be saved, the torque requirements under multiple working conditions can be met, the navigational speed, the endurance and the effective load capacity are increased in a different-emphasis mode, and self-noise and radiation noise are reduced.