44results about How to "Avoid eccentric rotation" patented technology

Conveyor rolls used in high temperature applications, and an end cap assembly for such rolls. The conveyor roll comprises a ceramic spool, an end cap and a tolerance ring. The end cap contains a metal ferrule and has an internal circumference adapted to fit over an end of the ceramic spool. A tolerance ring is interposed between each end of the ceramic spool and the end cap. The tolerance ring is composed of resilient metal having a plurality of circumferentially arranged corrugations. The conveyor roll can resist temporary overheating or blockage without damage.

Disclosed is a gas turbine which includes: a gas expansion part that expands gas; a power generation part that generates a rotational force due to the gas expanded by the gas expansion part and has a turbine shaft so as to transfer the rotational force; and an air compression part that is combined with the turbine shaft of the power generation and rotates and compresses air so as to supply compressed air to the gas expansion part. The power generation part generates the rotational force when a nozzle assembly having at least one injection hole so as to inject the gas in a circumferential direction is combined with the turbine shaft and the gas is injected in the circumferential direction via the at least one injection hole.

The invention relates to a drill pipe dismounting mechanism comprising a positioning device, a fixing device and an actuating device, wherein the positioning device is used for limiting dismounting position of a drill pipe, the fixing device is used for limiting movement of the drill pipe at the dismounting position, and the actuating device is used for driving the drill pipe at the dismounting position to rotate around its axis. Besides, the positioning device comprises a fixed block and a moving block matched with each other for limiting the preset axis, the fixed block is fixed relative tothe fixing device, the moving block is selectively fixed relative to the fixing device, so that the drill pipe is allowed to enter or exit the dismounting position, and further, the moving block and the fixed block are matched to limit moving of the drill pipe; when the drill pipe is at the dismounting position, its axis and the preset axis coincide. In application of the drill pipe dismounting mechanism, offset of the axis of the drill pipe is prevented during dismounting, and deformation or damage of the drill pipe during dismounting is then avoided.

The invention relates to a bearing special for a rowing machine. The bearing comprises an outer ring, an inner ring, rolling bodies, a first holder, a second holder, a dustproof cover and a connecting mandrel. The rolling bodies are connected with the outer ring and the inner ring and positioned through the first holder and the second holder so that the rolling bodies can be evenly separated. The inner ring is installed and fixed through the connecting mandrel. The width of the inner ring is far larger than that of the outer ring. A dustproof groove is formed in the outer ring. The dustproof cover is arranged in the dustproof groove. According to the bearing special for the rowing machine, the phenomenon of skidding generated when a shaft and the bearing are matched is greatly reduced, rotation eccentricity can be effectively prevented due to the application of the first holder and the second holder, and therefore it is guaranteed that the bearing and the whole component can normally work and run. The bearing is simple in structure and compact and reasonable in design, and the service life of the bearing is prolonged.

The invention relates to a hub motor comprising a stator unit, a rotor unit, a magnetic ring and a sensing circuit unit. The rotor unit is provided with a shaft part which can be relatively and rotatably penetrates through the stator unit; the magnetic ring and the sensing circuit unit are arranged on the rotor unit and the stator unit respectively and are correspondingly positioned at intervals between the rotor unit and the stator unit; and the magnetic ring is provided with a first ring piece extending radially and a second ring piece which is connected with the first ring piece and extends axially. With the structural design of the magnetic ring, the problems of eccentric rotation and axial displacement generated in the process that the magnetic ring rotates with the rotor unit can beavoided; and as the magnetic ring and the sensing circuit unit are arranged between the rotor unit and the stator unit and are wrapped and fixed by both the rotor unit and the stator unit, on the onehand, the structure stability that the magnetic ring is combined with the rotor unit is increased so as to resist the centrifugal force generated by high speed rotation, and on the other hand, the magnetic ring can be prevented from being polluted and interfered by the outside, and the cost for additional arrangement of an outer cover is saved.

The cleaning apparatus for electrodes includes a supporting container provided with a replaceable brush body; and a rotation mechanism for the rotation of the supporting container. The brush body accepts the insertion of the electrodes and cleans the tip end thereof by rotation.

The invention relates to a disinfection device for nursing, and the device comprises a machine shell; a top disc is fixedly mounted at the top of the machine shell, a water outlet is formed in the side wall of the machine shell, a driving motor is fixedly mounted at the top of the top disc, and a mounting main shaft is fixedly mounted at one end of an output shaft of the driving motor; a transmission lead screw is rotationally mounted on the inner wall of the top disc, a driving gear and a driven gear are fixedly mounted outside the mounting main shaft and the transmission lead screw correspondingly, and the driving gear and the driven gear are connected in a meshed mode. The heat recovery box is arranged outside the device, waste heat in the device can be effectively collected, waste is avoided, water vapor generated by waste heat recovery can be used for conducting reverse compensation and disinfection on the interior of the device, additional driving energy is not needed, energy is saved, the disinfection effect can be improved, and meanwhile, due to the design of the gas control mechanism, automatic operation of gas control can be achieved, manual management is not needed, intellectualization is achieved through a physical structure, and the using effect is improved.

The invention relates to the technical field of polyurethane raw material production, and discloses production equipment for a polyurethane raw material used for manufacturing soft volleyballs. The equipment comprises a shell, wherein the bottom of the shell is movably connected with a support frame, the top of the shell is fixedly connected with a motor box, the top of the shell is fixedly connected with an air inlet, a gas pressure meter is fixedly connected to the top of the shell, and a connecting block is fixedly connected to the outer side of the motor box. When the production equipment for the polyurethane raw material used for manufacturing the soft volleyballs works, through an arranged triggering mechanism and an extruding mechanism arranged in a matched mode, the triggering mechanism senses eccentric motion of an output shaft in the using process of the equipment, an internal circuit is switched on, so the extruding mechanism evenly achieves Ampere force to limit the output shaft; and therefore, when a gap between a shaft sleeve and a bearing is too large due to excessive abrasion of the bearing, eccentric rotation of the output shaft is avoided, damage to a reaction kettle during work is prevented, noise generated during work of the reaction kettle is reduced, and the service life of the reaction kettle is prolonged.

The invention discloses a loader hopper for concrete mixing, and relates to the technical field of concrete loaders. The device comprises a hopper and a stirring shaft, wherein the hopper is rotationally connected with the stirring shaft; and the stirring shaft penetrates through the hopper. According to the loader hopper, through use of a center gear and planetary gears, the situation of eccentric rotation during high load rotation is avoided, and the service life of rotating shafts is prolonged; through use of mounting frames, stirring frames and switching blocks, a plurality of mounting frames can be adopted by the structure, and meanwhile, a plurality of spiral stirring frames are connected between the mounting frames, so that compared with a traditional stirring hopper, the loader hopper has the advantages that the number of the stirring frames is increased, meanwhile, the lengths of the stirring frames are reduced, and the impact resistance of the stirring frames during stirringis better; furthermore, if the stirring frames are impacted by external force, the switching blocks can be extruded, and then the switching blocks can slide for a certain distance in corresponding mounting grooves to release pressure, so that the stirring frames are protected; and through use of sliding parts and springs, the sliding parts can buffer the impact on the stirring frames and fasteningscrews, and the stirring frames are protected.

The invention relates to a fluorescent wheel reliable in work. The device comprises a circular base plate and a phosphor attached to one side of the circular base plate, the other side of the circularbase plate is connected with a balance shaft sleeve used for adjusting the gravity center of the circular base plate, and the balance shaft sleeve comprises a disc part connected with the circular base plate and a connecting sleeve coinciding with the center of the circular base plate. The connecting sleeve is used for being connected with an output shaft of an external driving motor. Due to theexistence of the balance shaft sleeve, transmission connection between the circular base plate and the external motor can be guaranteed, the gravity center of the circular base plate can be effectively adjusted, and eccentric rotation of the circular base plate is avoided.

The invention belongs to the technical field of turning tools, and particularly relates to a three-jaw turning tool for machining a cuboid workpiece. The tool comprises a main body of a cylindrical structure. A mounting groove of a rectangular structure is formed in one end of the main body, and a storage groove coaxial with the main body is formed in the end, stretching into the main body, of themounting groove. A positioning rod coaxial with the main body is fixedly connected to the inner side wall on the side, away from the mounting groove, of the storage groove, the outer ring of the end,away from the storage groove, of the positioning rod is fixedly sleeved with a fixing disc, transverse guide mechanisms symmetrically arranged along the positioning rod are hinged to the two sides ofthe outer ring of the fixing disc, and two vertical guide mechanisms which are symmetrically arranged along the positioning rod are mounted on the sides, close to each other, of two transverse guidemechanisms. With the three-jaw turning tool for machining the cuboid workpiece, eccentric rotation of a workpiece is effectively avoided, the amplitude of vibration of the workpiece due to eccentricity is reduced, the stability of the workpiece after being clamped for machining is improved, the workpiece clamping error is small, and meanwhile tool is suitable for positioning and clamping operationon workpieces of different sizes.