34results about How to "Add limit function" patented technology

The invention discloses a pulley device of a high-redundancy absolute grating ruler read head. The pulley device of the high-redundancy absolute grating ruler read head comprises a pulley body, a first idler wheel, a second idler wheel, a first angular encoder, a second angular encoder, fixed idler wheels, a scanning circuit board and grating glass, wherein the radius of the first idler wheel and the radius of the second idler wheel are different, the grating glass is installed below the pulley body, the scanning circuit board is installed below the grating glass, the first idler wheel and the second idler wheel both of which the radiuses are different are respectively fixed to the lower end of the pulley body, the first angular encoder and the second angular encoder penetrate through the pulley body to be connected with the first idler wheel and the second idler wheel respectively and are used for recording the rolling angle of the first idler wheel and the second idler wheel in the measurement process, the fixed idler wheels are fixed to the side face of the pulley body, and the fixed idler wheels are tight attached to the grating glass to roll in the measurement process. The pulley device of the high-redundancy absolute grating ruler read head can improve reliability of reading, has the functions of judging the direction of movement of the grating ruler read head and calculating the displacement, and provides the standby limit function of a grating ruler.

A fault current limiter, including: two inductors, a direct current circuit breaker, a shunt resistor, a first fixed resistor, and metal oxide arresters. The two inductors include wound superconducting wires. The inductors have identical number of windings and identical structure. Magnetic fluxes of the inductors are forward coupled, and the inductors are connected in parallel to form a superconducting inductor structure. The direct current circuit breaker and the superconducting inductor structure are connected in series to form a series branch. The shunt resistor is connected in parallel to the series branch. The first fixed resistor is connected in parallel to the direct current circuit breaker. The metal oxide arresters are two in number, and are connected to two ends of the inductors in parallel.

A fault current limiter, including: an inductor, a direct current circuit breaker, a shunt resistor, and a first fixed resistor. The inductor includes wound superconducting wires. The direct current circuit breaker and the inductor are connected in series to form a series branch. The shunt resistor is connected in parallel to the series branch. The first fixed resistor is connected in parallel to the direct current circuit breaker.

The invention provides a mechanical seal limiting mechanism which comprises cylindrical holes, positioning blocks, an upper half ring, a second O-shaped ring, a second sealing ring groove, a lower half ring, nuts, through holes, locking cylinders and a fixing ring. The upper half ring is arranged at the upper end of the lower half ring, the two cylindrical holes are formed in the right end face of the upper half ring and the right end face of the lower half ring correspondingly, and the two positioning blocks are welded to the left end of the upper half ring and the left end of the lower half ring correspondingly. By means of the design, a limiting block and a static ring end cover can be better connected in a positioned mode, and the separable limiting block is more convenient to mount and dismount; the two through holes are symmetrically formed in the upper and lower ends of the interior of the fixing ring, and the locking cylinders penetrate through the through holes; and the nuts are mounted on the locking cylinders and fixed to the left end of the fixing ring. According to the design, when the limiting block loses efficacy, the limiting block can be prevented from moving, working stability is further guaranteed, and the mechanical seal limiting mechanism is good in stability, high in reliability, long in life and easy to mount and dismount.

The invention discloses an optical fiber connector capable of accurate positioning, which comprises a connector socket and a connector plug, wherein the connector socket comprises a connector socket base, a locking wheel pressure ring, a locking wheel and an operating handle, and the connector socket base is fixed to an optical bottom plate of a confocal imaging system in a rigid manner; the locking wheel pressure ring, the locking wheel and the operating handle form a locking and limiting mechanism of the connector socket; the head part of the connector plug is provided with an axial positioning head, a rotary positioning head is arranged behind the axial positioning head, an optical fiber bundle passes through a hollow hole, and the optical fiber bundle and the connector plug are fixed to each other after being leveled; and the hollow hole faces just to a circular light passing hole when connector plug is inserted to the bottom part of a positioning groove of the connector socket base, and focused laser is injected into the optical fiber bundle through the circular light passing hole. The optical fiber connector adds a rotary positioning function, limits the optical fiber to rotate around the axis, achieves positioning in the rotational direction, applies a pressure on the connector through a spring, ensures stable and reliable locking of the connector, and can control the pressure.

The invention relates to a medical apparatus, in particular to a rotatable ostomy bag and an application method thereof. The rotatable ostomy bag comprises a bag body, a rotating piece, a chassis and a communicating piece. A fixing piece is arranged on the bag body, a neck is formed in the bottom of the fixing piece, and a cam matched with the neck is arranged on the upper end face of the rotating piece; turnable clamped connection sheets are connected to the upper face and the lower face of the lateral side of the neck of the fixing piece; when the cam of the rotating piece is clamped into the neck, the clamped connection sheets are pressed onto the side walls of the two ends of the neck, and the cam is tightly connected with the neck; a rotatable handle is connected to one lateral side of the rotating piece. The limiting function is added; as a limiting block is installed on the rotatable handle side, limiting after rotation can be carried out at any time, the rotating effect is good, excessive rotation is prevented, and usage is quite convenient; the mode that fixing is carried out through a waist band is added, detachable hard plates are specially arranged on the two sides, a fixing adhesive part is arranged at the bottom, and multiple reinforcing modes can be achieved.