583results about How to "Easy mesh" patented technology

Turning gear apparatus for rotating a shaft comprises a rotary drive arrangement and a transmission system including a pivot arm. The rotary drive arrangement is fixed, for example to a vessel hull, and the pivot arm is pivotable between a first, shaft-disengaged, position and a second, shaft-engaged position where the rotary drive arrangement is operably coupled to the shaft, thereby permitting control over rotation of the shaft by the rotary drive arrangement.

The invention relates to a chair type full-body massaging machine. The chair type full-body massaging machine comprises a massaging machine core, a chair frame, a seat frame and a base, wherein the chair frame is movably hinged to the base; the seat frame is arranged on the base; the massaging machine core is provided with a traveling device; the chair frame is provided with a back guide track by which the massaging machine core walks on the back of a user; the seat frame is provided with a seat guide track by which the massaging machine core walks on legs of the user; the traveling device comprises traveling wheels matched with the back guide track and the seat guide track; a spaced gap is formed in a position at which the back guide track is connected with the seat guide track; a transitional guide track which is connected to adjacent ends of the back guide track and the seat guide track is arranged at the spaced gap and is movable; limiting chutes are formed in the transitional guide track; the chair frame and the seat frame are respectively provided with limiting guide columns extending in the limiting chutes; the limiting guide columns are matched with the limiting chutes in a sliding manner; and the traveling wheels pass through the spaced gap from the transitional guide track. The chair type full-body massaging machine has a full-body massaging function.

The invention discloses a short tube flexible gear harmonic reducer of a rigid wheel tooth dip angle and a transmission rigidity testing device thereof, and relates to the technical field of harmonic reducers. According to the invention, the deflection of the flexible wheel gear teeth is caused by the reduction of the axial size of the short tube flexible gear harmonic reducer, so as to realize the reduction of the surface area between the rigid wheel gear teeth and the flexible wheel gear teeth, and to realize the lowering of the transmission rigidity; the problem of complicated operating process of the existing harmonic drive rigidity experiment testing device is solved; and the length diameter ratio of a soft wheel is 1/4 to 3/5 of a short tube wheel, the inner wheel of the rigid wheel with a dip angle is the wheel teeth with the dip angle alpha along the rigid wheel axial direction, and the deflection direction and the field angle direction of the soft wheel on a long shaft are coincident. The transmission rigidity testing device of the short tube flexible gear harmonic reducer implements current control namely torque control through a computer and a servo driver, and the harmonic drive output end realizes continuous loading unloading; and the harmonic drive rigidity of the short tube soft wheel is obtained, and the transmission rigidity is serially, rapidly accurately obtained.

A coated active biologic piezoelectric layer on Ti substrate is prepared from fluorohydroxy apatite (FHA) and barium titanate (BT) through cleaning the surface of Ti substrate, microarc oxidizing to form a porous oxide film layer, and electrophoretic deposition to form a FHABT layer on the surface of Ti substrate. Its advantages are easy control to content of F, high implantation stability, binding power to interface, biocompatibility and bioactivity, and high effect to promote generation of biologic bone and taking part energy conversion in human body.

The invention relates to a starting method for internal combustion engines in motor vehicles, comprising a start-stop system, and to a starting device (10) for carrying out said method, said starting device comprising a starter motor (11) and an insertion device (12, 20) which axially inserts a slip-on pinion (13) into a crown gear (14) of the internal combustion engine when a stop cycle begins. In order to minimize the period until the engine can be restarted, the pinion (13) is resiliently inserted into the still rotating crown gear (14) by means of a pressure spring (25) when the stop phase begins, once the internal combustion engine (15) is switched off but before it comes to a standstill and with the starter motor (11) switched off.

An open mesh insect control material is described which includes an insect contact surface, an internal surface, apertures communicating both surfaces and a plurality of filamentous projections protruding from the insect contact surface the projections at least partly occlude the apertures. The structure is suitable for use in pest control especially as a mosquito net.

The invention discloses a novel harmonic speed reducer of a wave generator. The inner surface of a circular rigid wheel is provided with rigid internal teeth; a wave generator is arranged in the circular rigid wheel; the wave generator consists of an oval rigid cam and a flexible bearing embedded into the outer ring of the rigid cam; a flexible wheel is sleeved on the outer circle of the bearing of the wave generator; the outer surface of the flexible wheel is provided with outer teeth which are matched with the inner teeth of the circular rigid wheel; the flexible wheel and a circular rigid gear are configured coaxially; the wave generator is driven by a motor, and is taken as a rotary driving source; and the shape curve of the wave generator cam has a specific expression. According to the novel harmonic speed reducer, the specific expression of the shape curve of the wave generator cam is provided, and the flexible wheel and the rigid wheel are better meshed via the wave generator, so that the stress distribution on a meshed tooth surface between the flexible bearing and the gear is improved, and the bottom stress of the flexible gear is reduced.

A technology for industrially preparing the natural cocoon wool sheet includes choosing cocoon, immersing in warm water, adding caustic soda in the water tank of beating machine, heating the water to80 deg.C, cyclically scalding the cocoon by hot water while pulling silks while removing pupa to become cocoon wool sheet, rinsing in clean water at 90 deg.C for 4-5 hr, flushing, dewatering, baking and packing. A method for in-situ processing the natural silk quilt is also disclosed.

The invention discloses a tooth shape optimization design method for a linear-circular arc tooth outline internal engaged cylindrical gear pair. The designed gear pair consists of a linear tooth outline internal gear ring and a circular arc tooth outline external gear, wherein the internal gear pair is a cylindrical straight gear. The method comprises the following steps of: determining the modulus and the tooth number of the gear pair according to the working condition of the gear pair, determining tooth tip circles, reference circles and tooth root circles of the internal and external gears of the gear pair, then designing the tooth outline of the internal gear as a simple linear tooth outline, and determining the tooth shape parameters of the circular arc tooth outline of the external gear, namely circular arc radius and circular arc center position of the circular arc tooth outline by using an optimization design method for replacing the circular arc tooth outline for minimum engaged transmission error caused by the conjugate tooth outline of the external gear. The method has the advantages that: the conjugate tooth outline of the external gear can be fully replaced by the circular arc tooth outline, hard tooth faces of the internal and external gears of the internal gear pair can be ground and processed by a mold grinding process and a grinding process of the circular arc gear respectively, and the precision can reach the sixth level.

A rolling bearing is provided on an outer peripheral surface of a hub spindle of a hub wheel on which a wheel is mounted. Opposite side face splines, which, by meshing with each other, couple the hub spindle and an outer ring of a constant velocity joint torque-transmittably, are respectively formed on an end face of the hub spindle and on an end face of the outer ring of the constant velocity joint which is abutted against this end face. A tubular seal member for covering outer peripheries of the opposite side face splines is disposed so as to straddle an inner ring of the rolling bearing and the outer ring of the constant velocity joint, while maintaining a sealing state.

The invention relates to face-gear bending fatigue test mechanism and method, and belongs to the field of measurement of gear bearing capacity. The face-gear bending fatigue test mechanism disclosed by the invention meets the meshing relation of face-gears by using an involute profile loading press head and an involute profile supporting press head and can be used for loading any loading points positioned on the face-gears, thereby solving the problem that the traditional loading head can not meet the meshing relation and complicatedly transmits loading force; and besides, the face-gear bending fatigue test mechanism disclosed by the invention has adjustability and is suitable for a face-gear tooth bending fatigue test with different parameters by adjusting the positions of a supporting assembly and a loading assembly which are positioned in the face-gear bending fatigue test mechanism, thereby achieving obvious substantiality characteristics and outstanding advancement.

A porous supporting carbon body of a gas diffusion layer is provided with a larger number of smaller pores at its catalyst layer side and a smaller number of larger pores at the other side, particularly with an appropriate distribution of finer mesh at its catalyst layer side and coarser mesh at the other side. As a result, a high performance polymer electrolyte fuel cell is obtained in which water generated at the catalyst layer is quickly sucked out to the gas diffusion layer, and is evaporated at the gas diffusion layer to be effectively exhausted to outside the fuel cell, so that excessive water can be prevented from retaining in the gas diffusion electrode, with the polymer electrolyte membrane being maintained at an appropriately wet condition.

The invention discloses a retractable rope used for an elevator. The retractable rope is characterized by being composed of at least one bearing body capable of bearing independently and a wrapping layer, wherein the cross section of the retractable rope is oval, and the short axis of the oval is vertical to the retracting direction of the retractable rope. Compared with a plastic coated wire rope with a circular section, the retractable rope mainly has two advantages that (1) on the condition that the bearing force is the same, the contact area of the retractable rope and a running wheel is increased, the retractable rope is evenly stressed, and service life of a coated layer is prolonged; (2) a plurality of independent bearing bodies in the retractable rope are distributed in parallel, the diameter of each bearing body is 2 mm, according to the requirement in GB7588 that the rope diameter ratio can not be smaller than 40, and the diameter of the running wheel can be reduced to 100m. When the retractable rope is used, a traction pulley needs to have a groove type which is complementary with the appearance of the retractable rope so that the traction pulley can be well meshed with the rope when the elevator operates, the guide performance of the rope is improved and eccentric wear is restrained.

The invention provides a diamond resin binder abrasive disc and a preparation method and an application thereof and belongs to the technical field of polishing grinding apparatuses. The diamond resinbinder abrasive disc is prepared from the following raw materials in parts by mass: 20-40 parts of thermosetting resin, 4-30 parts of a curing agent, 15-30 parts of a diamond, 10-20 parts of an auxiliary grinding material, 10-30 parts of micro filler, 1-10 parts of nano filler and 1-5 parts of a coupling agent. The diamond resin binder abrasive disc is used for polishing a marble and has the advantages of being good in polishing effect, high in efficiency, environmental-friendly and safe and the like.

The invention provides a reset mechanism of a mold push plate, and the reset mechanism comprises a fixed mold plate, a movable mold plate, a push plate, a threaded mold core, a rotating loose core connected with the threaded mold core and a push plate ejection mechanism connected with the push plate, as well as a PLC (programmable logic controller) synchronous control system for driving the rotating loose core mechanism and the push plate ejection mechanism, wherein the push plate ejection mechanism comprises a servo motor and a transmission pair for transforming the rotational motion of the servo motor to the ejection and withdrawal linear motion of the push plate, the PLC synchronous control system comprises a push plate ejection impulse stroke and a push plate reset impulse stroke, the servo motor of the push plate ejection mechanism is connected with a ratchet mechanism, the ratchet mechanism is connected with the transmission pair, and the push plate reset impulse stroke is larger than the push plate ejection impulse stroke. By additionally arranging the ratchet mechanism in a servo system, the zero drift problem of the servo system is solved in a simple and effective way, and the reset mechanism of the mold push plate has the advantages of reasonable structure, effective control and accurate reset.

A fast exchange clamping chuck for electric tool, especially the electric drill has an axial hole for installing the axle of drill bit, a detachable axle sleeve in said axial hole, and a fast exchange unit for fast exchanging axle sleeve and composed of a spherical locating mechanism and an axial drive mechanism for driving the locating ball in spherical locating mechanism.

The invention relates to the technical field of living and learning furniture and concretely relates to a multi-functional table. The multi-functional table comprises table legs and support pipes connected to the table legs. A first transverse rod is hinged onto a table top board capable of turning over. The lower side surface of the table top board is connected with a movable rod through connecting parts. The support pipes are internally provided with two gear pairs axially vertical to each other. The gear pairs are connected with screw rods and first driving rods. Nut parts are in spiral and driving linkage with the screw rods. The nut parts are in spiral and driving linkage with the screw rods. The nut parts are connected to two ends of a movable rod through openings in one side of the two support pipes. A hand crank rocks the first driving rods such that active cone bevel gear wheels connected to two ends can rotate in sync. A gear mechanism transmits motion to the nut pats through the screw rods. The nut parts move such that the table top board turns over. The matching of gears can reduce rocking force and the screw rods have self-locking functions. Therefore, the table top board can conveniently turn over, make adjustments and is fixed better. A user can have better experience in using the multi-functional table and the multi-functional table is used stably for a longer period of time.

The invention discloses a precise and heavy-load type involute beveloid gear-enveloping hourglass worm transmission. The precise and heavy-load type involute beveloid gear-enveloping hourglass worm transmission comprises a gear and a hourglass worm, wherein the gear is made of a hard-tooth-surface wear-resistant material, the tooth surface of the gear is an involute surface, and gear teeth are wedge-shaped along the axial direction thereof; the hourglass worm is made of a medium-hard material, and the tooth surfaces of the both sides of the hourglass worm are enveloping surfaces taking the involute spiral tooth surfaces of the two corresponding sides of the gear as generatrices respectively, and formed by performing generating motion according to the engagement relationship between the gear and the hourglass worm. The precise and heavy-load type involute beveloid gear-enveloping hourglass worm transmission disclosed by the invention is large in transmission ratio range, high in bearing capacity, high in transmission reliability, easy for realize high-accuracy machining, capable of performing tooth side gap adjustment and tooth surface wear amount compensation by virtue of the movement of the axial position of the involute beveloid gear, and suitable for precise and heavy-load equipment such as elevator traction machines, machine tool indexing tables, industrial robots, radars and gun pitching and rotating systems.

The invention relates to a floating valve seat regulating valve, in particular to a floating valve seat high performance regulating valve. The technical problem to be solved by the present invention is to provide a high-performance regulating valve with a floating seat that can not only control the flow of liquid, but also protect the regulating valve from dust, so that the regulating valve can be used better. In order to solve the above technical problems, the present invention provides such a floating seat high-performance regulating valve, including a liquid inlet pipe, etc.; the right side of the valve body is connected with a liquid outlet pipe, and the lower part of the valve body is connected with a liquid inlet pipe. A bracket is installed between the outer top of the liquid outlet pipe, a sealing device is installed between the inside of the bracket and the liquid inlet pipe, a volume control device is arranged in the liquid outlet pipe, and the volume control device is connected with the sealing device. The invention achieves the effect of not only being able to control the flow of the liquid, but also preventing the regulating valve from dust, thereby enabling the regulating valve to be used better.

The invention discloses a coating and conductive resin of a film zinc coat, which is prepared by the following steps of: weighing an organic solvent, methyl methacrylate, hydroxybutyl acrylate, hydroxyethyl methylacrylate, hydroxyethyl methacrylate phosphate, tert-butyl peroxy-2-ethylhexanoate and graphene oxide; adding 3/4 of the organic solvent and the graphene oxide into a reaction kettle A and mixing uniformly; uniformly mixing the methyl methacrylate, hydroxybutyl acrylate, hydroxyethyl methylacrylate, hydroxyethyl methacrylate phosphate and 3/4 of the tert-butyl peroxy-2-ethylhexanoate, dropwise adding the mixture into a dropwise adding tank B, and then dropwise adding into the reaction kettle A; uniformly mixing the residual organic solvent and tert-butyl peroxy-2-ethylhexanoate, dropwise adding the mixture into the dropwise adding tank B, then dropwise adding into the reaction kettle A at 113-118 DEG C, preserving heat for 0.8-1.2 hours, cooling and filtering; and performing ultrasonic treatment, adding hydrazine hydrate for reaction, filtering, washing and drying. The prepared film zinc coat has better corrosion resistance.

A shaft distance adjusting mechanism for a steel plate forming machine belongs to the manufacturing technical field of the matched parts of machines, building material forming machines and other devices. The adjusting mechanism mainly comprises a machine frame (1), a fixed rotating shaft (2) which is arranged on the machine frame (1) and provided with a lower gear (3), an adjusting rotating shaft (5) which is also arranged on the machine frame (1) and provided with an upper gear, an eccentric sleeve (6) sleeved on the adjusting rotating shaft (5), an adjusting rod (8) arranged on the machine frame (1) and connected with the eccentric sleeve (6), and an end cover (7) arranged at two axial ends of the eccentric sleeve (6); and bearing saddle bores at both ends of the eccentric sleeve (6) share one axis, and an eccentric distance e ranging from 1 mm to 10 mm exists between the bearing saddle bores and an axle center. The shaft distance adjusting mechanism has the advantages of reasonable design of an integral structure, simple structure, stable work and convenient adjustment.