53 results about "Jewel bearing" patented technology

An active faceted mirror system is disclosed. The active faceted mirror system includes a set of active facet mirror devices, a base plate and a set of pins for mounting the active facet mirror devices to the base plate. Each of the active facet mirror devices includes a mirror substrate with a reflective surface and a bearing hole on the reverse side for mounting. Additionally, each of the active facet mirror devices includes at least three actuator targets located on the back side of the mirror substrate, a jewel bearing and a flexure for supporting the mirror substrate. The base plate includes a series of bearing holes for mounting the active facet mirror devices and at least three actuators for each of the active facet mirror devices. A set of facet controllers located on the base plate can be used to control the positioning of the active facet mirror devices to produce a desired illumination effect.

The invention discloses a flexible pendulous accelerometer, which comprises a shell, a flexible rod, a torquer moving coil, a torquer stator consisting of a yoke iron and a permanent magnet, a signal sensor consisting of a signal sensor moving coil and a signal sensor stator, a triangular pendulous reed and a servoamplifier, wherein the shell is full of a damping liquid; the triangular pendulous reed, the torquer moving coil and the signal sensor moving coil form a pendulum module; the flexible rod ensures that the pendulum module and an instrument shell are elastically connected; and the torquer stator and the torquer moving coil form a torquer. The flexible pendulous accelerometer eliminates the Coulomb friction force caused by a pivot and a jewelled bearing compared with the prior jewelled bearing supporting mode due to adopting a flexible supporting mode; the flexible supporting has small rigidity in a sensitive direction of the accelerometer and has large rigidity in other directions at the same time, which improves instrument measurement precision as well as vibration-resistant and shock-resistant abilities; the flexible pendulous accelerometer adopts a liquid for damping, and has better overload capacity and shock-resistant capability compared with a quartz flexible pendulous accelerometer adopting air damping.

A firearm and a trigger mechanism having a small trigger pull force, small trigger pull distance, and a large sear engagement is provided. The firearm and trigger mechanism of the present invention provides a safe firearm having a light and crisp trigger pull. Certain embodiments of the present invention may also provide for a firearm or trigger mechanism having a ratio of sear engagement to trigger pull distance that is greater than or equal to 1.0. Certain embodiments of the present invention may also provide for a firearm and a trigger mechanism operably connected with one or more jewel bearings.

The invention discloses a stepping scanning torque measuring device in a magnetic-levitation bearing support structure, belonging to the measuring equipment, particularly the equipment for detecting the change of blood flow. The stepping scanning torque measuring device comprises a measuring outer cylinder, a measuring inner cylinder, a middle shaft, an upper bearing and a lower bearing. The middle shaft is arranged on the measuring inner cylinder, and the upper bearing and the lower bearing support the middle shaft. The stepping scanning torque measuring device is characterized in that: the upper bearing and the lower bearing are both magnetic-levitation bearings and are fixed on the respective bracket, a horizontal swinging rod is fixed on the middle shaft, the inner end of a balance spring is fixed on the middle shaft, the outer end the balance spring is fixed on a balance spring bracket, the periphery of a large rotating disc which is provided with a displacement detecting component on the edge is provided with a gear, the gear is meshed with a driving supporting wheel driven by a stepping motor, and the large rotating disc is supported horizontally by three supporting wheels including the driving supporting wheel. Because the upper magnetic-levitation bearing and the lower magnetic-levitation bearing are fixedly connected with the middle shaft on the measuring inner cylinder, the phenomenon that the suspension-fiber type equipment shakes in the process of measuring is eliminated, and the defect that the jewel bearings have frictional force is overcome.

The invention discloses a mechanical watch with two tourbillons, which comprises a winding system, a drive system, a display system, a shifting needle system, a transmission gear train, a differential gear train and two tourbillon gear trains; a cover plate which is connected with a main clamping plate is adopted as a beachmark, the mechanical watch is divided into an upper layer and a lower layer; the winding system, the drive system, the shifting needle system and a drive part of the display system are arranged on the lower layer, and the tourbillon gear train, the transmission gear train and a display part of the display system are arranged on the upper layer; and the upper and the lower layers of the mechanical watch are connected with each other through the differential gear train into a whole. The mechanical watch has the advantages that: two identical driving gears on barrel which are serially connected with each other are divided by two coaxial tourbillons which are horizontally arranged into an upper and a lower layer, the two driving gears on barrel are connected with each other through a differential system which is provided with a jewel bearing, and the size of the two driving gears on barrel are maximized to obtain the maximum driving torque and the maximum winding length so as to provide energy to a balance and hair spring system and to prolong the time traveling length of the machine core. In addition, the size of an outer balance wheel is maximized, so the rotation inertia is increased, the time traveling precision of the watch is improved, and the time of the watch is more correct.

The invention discloses an implantable axial-flow type blood pump based on blood flowing pressure and Pivot supporting. The implantable axial-flow type blood pump based on the blood flowing pressure and Pivot supporting is characterized in that a through cavity is formed in a pump body, an axial-flow impeller composed of a front guide wheel (2), an impeller (4) and a rear guide wheel (6) is arranged in the through cavity, the impeller is arranged on a rotor, the two ends of the impeller are respectively connected with the front guide wheel and the rear guide wheel by virtue of a pivot jewel bearing, blood flowing pressure produced between the high-speed rotating impeller and the inner wall of the through cavity is utilized for providing radial auxiliary supporting for the rotor, and the front guide wheel and the rear guide wheel are fixed and static. Compared with the prior art, the implantable axial-flow type blood pump based on the blood flowing pressure and Pivot supporting has the advantages that mechanical friction of a supporting bearing is effectively reduced, the probability that hemolysis and thrombus are formed in the blood pump is reduced, and the service life of the blood pump is effectively prolonged.

The invention provides a thromboelastography instrument, and a blood containing cup cover assembling and disassembling method. The thromboelastography instrument comprises a first support, a second support, a jewel bearing, an addendum cone and a spacing mechanism; the first support is connected with the jewel bearing, and the second support is respectively connected with the addendum cone and the rotating shaft; the jewel bearing is used for supporting the addendum cone to make the second support and the rotating shaft rotate under the driving of blood to be detected; and the spacing mechanism is used for spacing the positions of the jewel bearing and the addendum cone in the connection or separation process of an external blood containing cup cover from the rotating shaft in order to separate the jewel bearing from the addendum cone. The method comprises the following steps: spacing the positions of the jewel bearing and the addendum cone by the spacing mechanism in order to separate the jewel bearing from the addendum cone; and connecting or separating the blood containing cup cover with/from the rotating shaft. The damage risk of the jewel bearing is reduced in the invention.

The invention provides a balance wheel and hair spring mechanism used for mechanical watches. The balance wheel and hair spring mechanism comprises a balance bridge, a balance shaft, a balance wheel, an inner-pile double disc and a hair spring, the balance bridge is arranged on a bottom plate of a mechanical watch, the balance shaft is rotatably arranged on the balance bridge by a micro bearing, the balance wheel is arranged at a first end of the balance shaft, the inner-pile double disc is a combination of an inner pile and double discs and is connected at a second end of the balance shaft, the hair spring is arranged on the inner-pile double disc in a sleeved manner, and one end of the hair spring is connected to the inner-pile double disc while the other end of the same is connected to the balance bridge. By using the micro bearing to replace a jewel bearing commonly used in the prior art and due to the miniaturized size of the micro bearing, the balance shaft with large diameter can be mounted within certain mounting space; the balance shaft and the micro bearing have a low friction coefficient, so that the balance wheel and hair spring mechanism can withstand big external action force and is guaranteed to be less prone to being damaged, and the need for an equipment shock absorber is omitted.

The invention discloses a tipping bucket type rainfall sensor with small sensing capacity and large range, which comprises a water outlet spout, a water diversion tank with water outlets at both ends, and a pair of tipping bucket components; The center line of the water outlet spout is symmetrically arranged at the bottom of the water distribution tank. The 0.1mm sensitive rainfall sensor of the present invention is composed of two pairs of single tipping buckets each equipped with precise weights to form branch parts, supported by the tipping bucket shaft, installed back to back in the jewel bearing branch on the support, and can rotate sensitively. Its structure is simple, small in size, integrated with the rain-bearing tube parts, installed with a single rod support, designed with a firm base, and buried deep underground. The surrounding area is tightened with steel wire ropes, and it can work normally under typhoons of level 8. It is easy to use, maintain and repair, and the drip test is simple and convenient with high precision. mm, and telemetry, real-time reporting, wide application.

The invention belongs to the airplane electric connection design technology, and relates to a high-temperature-resistant small-diameter insulating adapter. The high-temperature-resistant small-diameter insulating adapter comprises an adapter shell (1), a jewel bearing (2) and an adapter sleeve (3); the adapter shell (1) and the adapter sleeve (3) are sintered and fixed by glass; the adapter shell(1) and the adapter sleeve (3) adopt an iron-cobalt-nickel glass packaged alloy material; the exterior of the adapter sleeve (3) is sleeved with a high-temperature-resistant insulating fiber sleeve (4), so that the insulating requirement of a circuit can be ensured; and one end of the adapter sleeve (3) is connected with internal wires in an armored heater (6) in a crimped form while the other endis connected with an inner core of an external wire (5) in a crimped form so as to achieve circuit connection.

The invention discloses a coaxial big-calendar display mechanism of a watch, wherein a hour wheel is arranged in the center of a dial plate and engaged with a date finger driving wheel, and a calendar date corrector, the date finger driving wheel and a date finger driving wheel shaft are pressed into a whole; a calendar wheel shaft, a calendar wheel, a units-digit change wheel and a tens-digit change wheel are positioned and pressed into a whole by position nails and rotate coaxially; a units-digit wheel and a units-digit character disk are pressed into a whole, a tens-digit wheel is fixedly arranged on a jewel bearing A on a clamping plate, and a tens-digit wheel shaft and a tens-digit character disk are pressed into a whole and rotate coaxially; and double-digit digits formed by the combination of single digits on the units-digit character disk and the tens-digit character disk are displayed by a date display window arranged on the dial plate. The coaxial big-calendar display mechanism reduces the frictional resistance produced by the rotation of the wheel shafts, ensures that the two character disks can flexibly replace the calendar and reduces the occupied space of the watch, thereby being more suitable for plane disposal and magnifying the display of the calendar. The mechanism can be arranged on the two-o'clock position, the three-o'clock position, the four-o'clock position, the six-o'clock position and the twelve-o'clock position of the watch. The whole watch is beautiful and decent and is convenient to use.

The invention discloses a watch jewel bearing bore arc processing device, which comprises a feeding mechanism and a tightening mechanism, which are arranged at the two ends of a guide wheel mechanism respectively. The guide wheel mechanism comprises a guide wheel and a grinding steel wire. The side surface of the guide wheel is provided with a guide wheel spiral groove. One side of a jewel bearing to be processed is clamped in the guide wheel spiral groove. The grinding steel wire passes through a bore of the jewel bearing to be processed. The feeding mechanism comprises a feeding feeder, a jewel bearing limiter and a feeding end steel wire tightening support. The feeding feeder comprises a feeding push plate, a feeding screw rod and a balance guide bar. The feeding push plate is arranged on a slide block. One end of the feeding push plate is suspended, and the suspended end of the feeding push plate is provided with a bent arc plate. The slide block is internally provided with the feeding screw rod and the balance guide bar. When the feeding screw rod rotates, the slide block is driven to reciprocate along the balance guide bar. The grinding steel wire presses the bore of the jewel bearing to be processed, and grinds the bore wall of the bore of the jewel bearing to be processed, and thus the device can process the jewel bearing accurately and quickly.

The invention discloses a horse hoof base locking face orientating grain arranger. The grain arranger comprises an operation platform, wherein the operation platform is provided with an orientating grain arrangement unit for performing orientating grain arrangement on to-be-machined jewel bearing grains and an oscillating delivery unit for delivering all the to-be-machined jewel bearing grains to the orientating grain arrangement unit in sequence according to the direction that horse hoof base locking faces face outwards; the oscillating delivery unit comprises an oscillating disc, a feeding guide rail, an ejector pin doing intermittent ejection motion and a cam for intermittently ejecting the ejector pin. By using the grain arranger, the jewel bearings can be quickly arranged in one row according to the direction that the horse hoof base locking faces face outwards in batches, so that the grain arrangement efficiency is greatly improved, and meanwhile the precision of batch grinding of the jewel bearing grains is also improved.

The invention provides a shaft tip supporting pendulum type servo accelerometer, which is characterized in that a torquer of a closed-loop servo system is utilized to stabilize detection quality at a balance position, and the acceleration is indirectly measured by measuring the magnitude of current flowing through the torquer. Due to the adoption of a rigid supporting design mode that metal is matched with a conical jewel bearing, compared with a torsion bar open-loop liquid floating pendulum type accelerometer, the threshold value, the resolution ratio and the linearity precision are improved by nearly hundreds of times, and compared with a flexible fine rib supporting quartz accelerometer, the vibration resistance and the impact resistance are improved by nearly 10 times; the device has multiple technologies such as a high-sensitivity capacitive sensor, a single torquer structure and a feedback type high-precision integrated servo circuit; the device product has the characteristics of small size, light weight, low power consumption, large measurement range, vibration resistance, high precision, strong environment resistance and the like, has the advanced technical level in China, and is suitable for being widely applied to the fields of flight control systems, flight parameter systems, autopilot systems and the like.