44results about How to "Prevent jumping phenomenon" patented technology

The invention discloses a guide mechanism of horizontal moving of a carriage unit of a printer. The guide mechanism comprises a carriage unit frame, wherein a guide shaft is installed on the lower portion of the carriage unit frame in a movable and penetrating mode, a guide rail which is parallel with the guide shaft is arranged above the guide shaft, a locking clip and a guide wheel which are respectively located on the front side and the rear side of the guide rail are arranged on the upper portion of the carriage unit frame, the middle of the locking clip is hinged with the carriage unit frame, and a spring which is used for enabling the locking clip to rotate around the hinged position and be pressed towards the guide wheel. The locking clip exerts force which enables the lower portion of the locking clip to be far from the carriage unit frame on the lower portion of the spring, wherein the spring is located between the carriage unit frame and the lower portion of the locking clip, and the middle of the locking clip is hinged on the carriage unit frame. According to a lever principle, the upper portion of the locking clip rotates around the hinged position and is pressed towards the guide wheel, and accordingly the guide wheel and the locking clip are enabled to tightly clamp the guide rail between the guide wheel and the locking clip, the situation that the carriage unit is closely attached to the guide rail is ensured in the horizontal moving process of the carriage unit, and the mechanism is conductive to improvement of printing quality of the printer.

A tire chord weaving apparatus (1) includes a warp tension adjusting device (3) and a loom (4). The warp tension adjusting device (3) includes a dancer roller (10a, 10b) for equalizing tensions of warp yarns drawn from the creel device (2) and a dropper device (8) disposed upstream of the dancer roller (10a, 10b). The loom (4) weaves a tire chord fabric from the warp yarns supplied via the warp tension adjusting device (3). In the tire chord weaving apparatus (1), by using an urging roller (10a) that moves up and down and that is disposed above the warp yarns so as to extend in a direction perpendicular to a direction in which the warp yarns are fed and an urging device (11) including a fluid-pressure cylinder (15) for applying an urging force (F) to the urging roller (10a) in such a direction that the urging roller (10a) is lowered, the urging force (F) is applied to the urging roller (10a) over a period from a first time after a time at which the loom (4) is stopped to a time at which the loom (4) is restarted.

The invention discloses a nose structure for a hair dryer. The nose structure comprises a nose main body, two swinging arms arranged on the nose main body, a motor for driving the swinging arms to move, a temperature display for displaying the temperatures of the swinging arms, and a negative-ion generator for injecting negative-ions into the swinging arms. Compared with the traditional nose structure for the hair dryer, the nose structure for the hair dryer has the advantages of good synchronism and uniformity in heating because one same motor is used for driving two different swinging arms to move; meanwhile the swinging arms are designed to be of a gradual change structure with fine front end and thick rear end, so as to generate small moment during swinging, reduce load of the motor, and be low in energy consumption; and moreover, through integration assembly of the temperature display and the negative-ion generator, the nose structure for the hair dryer has the characteristics of strong temperature controllability and good hairdressing effect. Moreover, the invention also provides a hair dryer with the nose structure.

The invention discloses an internal grinding machine for steel pipes, which comprises a track, a first trolley and a second trolley arranged on the track, the first trolley is provided with supporting wheels for supporting and driving the steel pipe to rotate, and the second trolley is provided with The lifting column, the connecting piece, and the sleeve connected with the connecting piece, the sleeve is provided with a first rotating shaft, the first rotating shaft is connected with a worm, the worm is meshed with a worm wheel, the worm wheel is threaded on the second rotating shaft, and the second rotating shaft The shaft is connected to the sleeve through a parallel beam sensor, and a clamping mechanism is also arranged in the sleeve; the axis of the grinding wheel of the present invention is perpendicular to the axis of the first rotating shaft, and the first rotating shaft is only subjected to the bending moment on the vertical plane, and It will not be subjected to the bending moment on the horizontal plane, and under the action of the support of the sleeve, the bending of the first rotating shaft on the vertical plane is avoided; and the parallel beam sensor can detect the pressure of the grinding wheel on the inner wall of the steel pipe, so that the grinding wheel The inner wall of the steel pipe has a suitable amount of grinding to avoid excessive pressure affecting the size of the inner diameter of the steel pipe.

The invention provides a high-voltage circuit breaker secondary circuit. The synchronization problem between different poles and the same poles after two double-break circuit breakers are connected inseries can be solved, and functions of secondary control circuit anti-tripping and non-full-phase protection are achieved. The high-voltage circuit breaker secondary circuit includes an open circuit,a closed circuit, an anti-tripping protection circuit and a non-full-phase protection circuit. The open circuit includes parallel branches formed by A, B and C phase opening solenoid branches and being in series connection, a low oil pressure opening blocking auxiliary relay normally-closed contact and an SF6 low pressure gas blocking auxiliary relay normally-closed contact; the closed circuit includes a parallel branches formed by A, B and C phase closing solenoid branches and being in series connection, a low oil pressure closing blocking auxiliary relay normally-closed contact and an SF6 low pressure gas blocking auxiliary relay normally-closed contact; the anti-tripping protection circuit includes A, B and C phase anti-tripping circuits; and the non-full-phase protection circuit includes three branches in parallel connection, which are an auxiliary contact branch, a non-full-phase time relay 47T1 and non-full-phase time relays 47TX1 and 47TY1.

The invention relates to the field of indoor positioning, and discloses a positioning correction method based on Bluetooth signal single-step robustness filtering and approximation discrimination, including establishing a Bluetooth node network; performing parameter initialization configuration; performing gait recognition according to accelerometer data; dividing according to single-step time periods and analyze the bluetooth signal data to obtain the single-step signal strength sequence of the bluetooth node; carry out the single-step signal strength sequence anti-difference processing on the signal strength sequence; compare the single-step signal strength value after the anti-difference with the signal strength identification threshold; Observing the sorting of single-step signal strength values ​​of Bluetooth nodes, and performing approximation judgment on the largest sorted signal strength value; performing proximity correction. The present invention performs robustness processing on the signal strength sequence of observable Bluetooth nodes obtained in each step through a single-step robustness filtering method, which reduces the influence of coarse errors in signal strength values, eliminates large jitters, and avoids frequent error corrections and The trajectory adjustment problem improves the accuracy and reliability of pedestrian positioning correction.