3645 results about "Bearing (mechanical)" patented technology

The invention discloses an electric shear type lifting platform, which comprises an upper movable bearing platform, a lower base, a mechanical lifting mechanism and a power driving mechanism, wherein the mechanical lifting mechanism is provided with a plurality of shear fork components, the power driving mechanism is a screw horizontal track feed actuating mechanism and comprises two screws which are parallel to each other and correspondingly arranged side by side, a driven end of each screw is in rotating connection with the position at the bottom end of one side of the bottom shear forks through a bearing, threaded sections of the screws are movably connected with a parallel moving block with internal threads matched with the threaded sections, the parallel moving block is fixedly connected with the bottom end of the other side of the bottom shear forks, folding and unfolding of the bottom shear forks can be realized by the aid of the parallel moving block and horizontal track feed along the screws, and further the upper movable bearing platform is supported to ascend and descend. The power driving mechanism is controlled by means of motor drive, so that folding and unfolding of the shear forks are realized, the upper movable bearing platform is kept parallel to the lower base, and further the lifting platform is stable in operation, low in manufacture cost and wide in application.

A Styrofoam-filled plastic cylinder that has collapsible paddle wheel fins attached about the circumference. Two shafts extend from the ends of the cylinder. The shafts are held by bearings. The bearings are attached to a frame structure that is embedded into the seabed. The shafts then extend past the bearings and are connected to a gear drive system that, in turn, connected to generators or other mechanical devices. When installed in the sea, the cylinder will turn in the swells/tidal action for as long as the ocean produces waves. Platforms on either side of the cylinder rise and fall with tidal action to maintain effective contact with the water at all times. Moreover, because the structure is positioned at or near the water surface, maintenance is much simpler for this device.

The invention relates to an in-slot self-cooling high-speed permanent magnetic motor system for a compressor and belongs to the technical field of motors. The megawatt high-speed variable-frequency motor comprises a cooling water jacket, a stator core, a stator winding, a stator radial air channel, an inner stator air channel, a permanent magnet rotor, two sliding bearings and two compressor impellers. The system has the advantages that the problems of severe heat and uneven temperatures of a high-speed motor rotor can be solved effectively; the problems of the over-temperature and overlarge axial temperature gradient of the stator core are solved; and not only the strength problem of a permanent magnet under a condition of high-speed rotation of the rotor can be solved mechanically, but also higher harmonics can be effectively prevented from entering the permanent magnet and generating added losses electromagnetically.

The invention relates to a painting device (1) for painting components (2), particularly for painting motor vehicle bodies or parts thereof, having a multi-axis painting robot (6, 7) positioning an atomizer, a robot controller for controlling the painting robot (6, 7), and a controls enclosure (8, 9) comprising the robot controller. The invention proposes that the controls enclosure (8, 9) is in the form of a load-bearing column that mechanically supports the painting robot (6, 7). The invention further relates to an associated method.

In order to produce a variable valve lift device for the lift adjustment of the gas-exchange valves of an internal combustion engine, by means of which with adjustment forces and holding forces, independently from whether said holding forces and adjustment forces are applied mechanically, hydraulically or electrically, with an adjustment of the valve lift being as cost-effective as possible, and with maximum accuracy of the adjustment or control of the valve lift to be taken between the individual cylinders of a multi-cylinder internal combustion engine, and, moreover, the adjustment possibility of the valve lift of the valves of an internal combustion engine with several cylinders is obtained within smallest tolerances, it is suggested that a valve lift device (1) has a rotatable eccentric shaft (3), which consists of several eccentrics (4, 5) and whereby all possible contours of the eccentrics (4, 5) are positioned within a circle, which is formed by means of the external diameters of a bearing (6, 7) of the eccentric shaft (3).

The invention relates to a large scale axle kind product vertical casting and restoration apparatus and a use method thereof, belonging to mechanical fields. A frame is fastened with an operation table and a frame station and is movably connected with a mobile arm, a temperature holding pot is fastened with the operation table and a base and is screwed connected with a guide tube, a leak protection pot is fastened with the operation table and the frame station and the base, and the operation table is fastened with the frame station and the base, a column is fasened with the operation table and the base and is movably connected with a lifting table which is connected with a center shaft by bearing and is fastened with an electric machine. The center shaft is connected with a gear box of the electric machine and is connected with a chuck by key. The center shaft, basic parts and a location tip of the mobile arm are provided for supporting. The chuck is buckled with the basic parts. The frame station, a crystallizer, an inductor, and a pouring cup are connected with each other by flanges. The crystallizer is covered by a liner, and the basic parts are covered by a seal ring and a leak protection groove. The pouring cup is inlayed with a thermocouple, the basic parts are fastened with a fixture, an upper lock loop and a lower lock loop. A product/a restoration product can be obtained by treating, assembling, processing, stopping process and post-treating the basic parts, which is applicable for casting or repairing the axle kind product, with high quality.

The invention belongs to the field of electromechanical technique, and relates to a spherical moving robot, and in particular relates to a fluid driving spherical robot which comprises a spherical shell, an annular seal container, axial flow devices, an inner driving rotating mechanism and a main shaft. The fluid driving spherical robot is characterized in that the spherical shell consists of two hemispherical shells including a left hemispherical shell and a right hemispherical shell; the annular seal container is positioned in the spherical surface; the outer annular surface of the container is concentric with the spherical surface of the spherical shell; the container is filled with fluid; the volume of the fluid is half of the volume of the container; two axial flow devices are symmetrically installed in the annular seal container; the axial flow devices drive a liquid to flow in the annular seal container, thus the mass center of the spherical robot is changed, thus the spherical robot can move forwards and backwards; the inner driving rotating mechanism positioned in the spherical shell mainly comprises an inner driving bracket, a motor, a motor support, a flywheel shaft, a flywheel, an electricity supply power supply and a controller; the main shaft is fixedly connected with the inner driving bracket through the motor support; the fly wheel is installed on the inner driving bracket through a bearing; the motor shaft is connected with the fly wheel through a coupling; and the motor drives the lower part of the motor to rotate together with the flywheel shaft vertical to the main shaft and the fly wheel, and the spherical robot takes a turn under the driving of the fluid on the basis of an angular momentum conservation principle.

The present invention relates to an automatic back contact rolling mechanical forming drum, including coupling flange, back contact rolling arm elastic rubber ring, drive back contact rolling piston component and cylinder body sleeve the the front end of which is equipped with sector block cylinder body, drive sector block piston group, sector block connecting bar group, fastening tire body sector block group and sector guide disk. The rear end of the described piston component is symmetrically equipped with back contact rolling arm component, back contact rolling wheel group and free guide bearing group. The rear end of the described cylinder body sleeve is equipped with dished pushing disk, and a slide-fit cylinder body rear end cover is mounted on the cylinder body sleeve, and the rear portion of the described back contact rolling arm component is connected at the rear end cover place of the cylinder body.

The invention provides an intelligent patrol inspection robot for a cable tunnel. The intelligent patrol inspection robot for the cable tunnel is characterized in that communication management machines are installed in the cable tunnel at intervals of 10 km and used for communicating with the robot; the robot adopts a wheel drive mode and comprises four wheels composed of wheel hub motors; the wheels are installed on a bearing chassis; a first mechanical arm, a second mechanical arm, a third mechanical arm, a fourth mechanical arm, a power battery pack, a controller and a speed measurement sensor are installed on the bearing chassis; an LED illuminating lamp, a thermal infrared imager and a camera are installed on the first mechanical arm, the second mechanical arm and the third mechanical arm correspondingly; and an electricity taking CT which can be opened and closed, a spray nozzle, a booster pump and a color marking liquid box are installed on the fourth mechanical arm. According to the intelligent patrol inspection robot for the cable tunnel, various parameters of the tunnel environment are comprehensively monitored and collected, the manual patrol inspection work can be replaced, and partial discharge faults of circuits can be rapidly found out.

The invention relates to the field of mechanical assembly, disclosing to a method for measuring and selecting a gasket of a taper bearing. The method comprises the following steps of: 1, assembling all workpieces except the gasket to be measured according to the normal work state of a taper bearing drive system; 2, simulating the pressure and the speed during the normal work of the taper bearing drive system, and measuring the overall dimension under actual working conditions; and 3, comparing the dimension measured in the step 2 with the dimensions of the bearing inner rings of an upper taper bearing and a lower taper bearing and spacer bushes in static states, wherein the difference value is the thickness of the gasket to be measured. According to the method, the actual operation conditions of the workpieces can be completely simulated for measuring, the measurement accuracy is high, and the real value of the thickness of the actually required gasket can be measured. Meanwhile, the invention also provides a gasket measuring device, which can ensure that the assembled gasket conforms to the actual needs of pretightening the bearings. The detection can be completed by means of the device, and the production efficiency is greatly improved.

A mechanical conversion system for receiving input from a toroidal engine that outputs an oscillating motion. The system has a gear set with facing bevel gears that mesh with radially mounted pinions. The bevel gears are mounted on a splined input shaft via bearings and one-way clutches. An overrunning clutch is coupled with each bevel gear. As the input shaft rotates in one direction, the overrunning clutch of one bevel gear is engaged and drives the one gear in the first direction, while the overrunning clutch of the second bevel gear is disengaged and allows the second bevel gear to overrun the input shaft. The overrunning clutch is a type known as a MECHANICAL DIODE®, which engages within 4.5 degrees of rotation, without significant slippage.

The invention relates to a mechanical components industry regulation hole coaxial between the methodology and regulation components, in particular the aviation, aerospace, civil and other mechanical structure of the multi-hinge assembly point. Double eccentric bushing from the eccentric bushing and the eccentric bushing composition, the eccentric bushing diameter and the outer diameter of a round circle of eccentric and the eccentric bushing diameter and the outer diameter of a round of the same circle of eccentric, and, Bushing end of the shaft is the first shoulder. Double eccentric bushing used in the eccentric bushing and the eccentric bushing with a certain amount of tolerance, through the inner and outer sleeve of repeated eccentric rotation adjustment can be realized coaxial connection points more than the match, and for each hub Heart of the biggest angle adjustment of not more than 360 degrees, adjust volume small. This greatly reduces the difficulty of assembling and because of the internal and external sleeve with tolerance, as well as components and assembly hub between the matching hole in the machining tolerances can be very good at that in the assembly, so there is no need to conduct a follow-up processing, reducing assembly time.

The invention discloses a tapered bearingless asynchronous motor. A left tapered bearingless asynchronous motor and a right tapered bearingless asynchronous motor which are identical to each other and respectively arranged at the left end and the right end of a motor casing are symmetrically connected to a mechanical rotating shaft; the left tapered bearingless asynchronous motor, as well as the right tapered bearingless asynchronous motor, consists of a tapered stator, a torque control winding, a levitation force control winding and a tapered rotor; the tapered rotors are fixedly connected with the mechanical rotating shaft; a plurality of stator slots are axially formed on each tapered stator; each stator slot is provided with an inner layer and an outer layer in the radial direction, and the levitation force control winding and the torque control winding are respectively arranged in the inner layer and the outer layer; and the difference between the number of pole-pairs of the levitation force control windings and the number of pole-pairs of the torque control windings is 1. The tapered bearingless asynchronous motor dispenses with magnetic levitation bearings indispensable for a traditional five-degree-of-freedom bearingless asynchronous motor, and has the advantages of simple structure, short axial length, high critical rotational speed, small reactive loss and the like.

The invention discloses a mechanical-hydraulic double-acting release rotary tail pipe hanger, and belongs to the technical field of manufacturing downhole tools for oil and gas well cementing operations in oil and gas development. The mechanical-hydraulic double-acting release rotary tail pipe hanger comprises a short drill pipe, an upper joint, a release mechanism, a double male joint, a male and female joint and a lower joint. The short drill pipe, the upper joint, the double male joint and the lower joint are connected in a threaded manner from up to down sequentially. The mechanical-hydraulic double-acting release rotary tail pipe hanger further comprises a loading mechanism comprising a hanger set hydraulic cylinder, a light-load bearing, conjoined twin slips, a conjoined twin cone, a heavy-duty bearing and a central pipe. The hanger set hydraulic cylinder, the light-duty bearing, the conjoined twin slips, the conjoined twin cone and the heavy-duty bearing are arranged on the central pipe from down to up sequentially. The central pipe is connected at the lower end of the male and female joint. The heavy-duty bearing is arranged between the male and female joint and the conjoined twin cone. By the aid of the mechanical-hydraulic double-acting release rotary tail pipe hanger, a tail pipe can rotate when the a tube pillar enters, after the hanger is set and is separated from a releasing release, the slips and the bearings bear the hanger, and functions of rotating and well cementing of a heavy-duty tail pipe is realized.

The invention provides a modification method of a secondary straight-tooth planetary gear. The modification method comprises the following steps: b, determining the load value of gear modification quantity, wherein the load value refers to the interfacial force of a rotating system bearing of the secondary straight-tooth planetary gear in a running state; c, according to the load action of a complex mechanical coupling relationship, obtaining a transmission error curve, and at the same time, obtaining the normal load distribution diagram of the tooth surface of each gear tooth in unit length when the gear is in contact; and d, respectively carrying out profile modification and axial modification on the two different contact surfaces of the planetary gear, and determining modification parameters. According to the modification method of the secondary straight-tooth planetary gear, provided by the invention, the engagement impact of a pinion pair can be reduced under the condition of keeping gear processing precision and saving materials as far as possible, so that the vibration and noise of a planetary gearbox are effectively reduced, and the unbalance load phenomena of planetary gear engagement are greatly reduced; accordingly, the gear transmission stability is improved, the gear bearing capability is improved, the gear service life is prolonged; and the cost is saved, and the hurt of noise to the physical and psychological health of a human body is also reduced.

The invention relates to a surfacing method, in particular to a surfacing method of a 12-percent Cr steel high and middle pressure rotor journal of an ultra supercritical steam turbine, solving the problem of mechanical adhesive wear of the surfaces of the 12-percent Cr steel high and middle pressure rotor journal and a bearing. The surfacing method comprises the following steps of: firstly, respectively turning a first journal and a second journal of a blank rotor in a groove mode; secondly, carrying out dye inspection on a turning surface; thirdly, assembling the blank rotor to a special surfacing device; fourthly, preheating a surface to be surfaced of the rotor journal; fifthly, surfacing the surface to be surfaced; sixthly, distressing and heating a rotor; seventhly, turning and finishing the surfaced rotor; and eighthly, carrying out nondestructive inspection detection on the finished rotor. The surfacing method is used for surfacing the 12-percent Cr steel high and middle pressure rotor of the ultra supercritical steam turbine.

Bearing apparatus includes: (a) a first member comprising rigid material and having a bore defining a first contact surface; (b) a second member disposed in the bore, the second member comprising rigid material and having a cylindrical surface defining a second contact surface; (c) wherein both contact surfaces are wear-resistant, and wherein the first and second members are positioned relative to each other by a plurality of protruding bearing elements contacting at least one of the first and second contact surfaces, so as to transfer mechanical loads between the members, each bearing element including a raised central portion flanked by a pair of beam portions, while allowing relative translation and/or rotation between the members; and (e) wherein the bearing elements are shaped and sized so as to deform elastically and conform in an irregular shape to the at least one contact surface.

The invention relates to a submersible axial-flow pump with an inbuilt impeller. The submersible axial-flow pump comprises a water suction chamber, an impeller hub and a water discharge chamber that are all coaxially communicated, and further comprises a motor rotor and a motor stator, wherein the motor rotor is fixedly arranged on the outer periphery of an impeller shell, one ends of more than three blades are uniformly connected onto the inner periphery of the impeller shell, the other ends of the blades are respectively connected with the impeller hub so as to form an impeller, the impeller is positioned in the middle of the motor rotor so as to enable the motor rotor and the impeller to be integrated into a whole; the motor stator is arranged outside the motor rotor in a sleeving manner, so that a water filling type submersible motor is formed. According to the invention, the axial length of the submersible axial-flow pump is greatly shortened, so that the structure is compact; the requirement for strength and rigidity of a rotating shaft is lowered; the submersible motor is positioned outside a flow passage, so that the pumped water flow of the submersible electric pump is not affected, the efficiency of the submersible electric pump is improved, and the safety and reliability of the motor are improved. The bearing chamber is sealed by adopting a cartridge mechanical seal, so that the mounting precision requirement is lowered and the floatability is good.

A method of installing an annular bearing element within a centrifugal pump utilizes a mechanical staking operation. The bearing element locates within a receptacle of a pump stage that is surrounded by a retaining wall. Once the bearing element is located within the retaining wall, the retaining wall is permanently deformed at various points against the bearing element. The bearing element, if of a hard wear resistant metal, may have flats for the circumferentially spaced apart deformations to locate within. The bearing element may be a thrust washer for transmitting downward thrust, or it may be a radial support bearing sleeve.

The invention discloses a frameless permanent magnet synchronous motor direct-drive centrifugal pump. The frameless permanent magnet synchronous motor direct-drive centrifugal pump comprises a pump body. An impeller chamber is formed in an inner cavity of the pump body. The position of a water inlet of the pump body is provided with an exhaust valve. A connected base is fixedly arranged above the pump body. A circulation water chamber and a bearing chamber are formed in an inner cavity of the connected base. A cooling water pipe is arranged on the outer circumference of the connected base. A frameless permanent magnet synchronous motor is arranged above the connected base. A dustproof cover plate is arranged at the upper portion of the frameless permanent magnet synchronous motor. A power shaft is arranged at the middle portion of the pump body and the middle portion of the connected base, a pump cover is arranged between the pump body and the connected base, and the power shaft is fixed to the connected base through a bearing. An encoder is arranged at the top end of the power shaft. An impeller is arranged in the impeller chamber and fixed to the power shaft through the arrangement of an impeller nut. A mechanical seal is arranged among the impeller chamber, the circulation water chamber and the bearing chamber. The frameless permanent magnet synchronous motor direct-drive centrifugal pump has the beneficial effects that design is reasonable, the structure is simple, and the transmission efficiency is improved; motor running is controlled in a program digital manner, electricity consumption is low, noise is low, and maintaining is convenient.