86results about How to "Avoid rewinding" patented technology

The invention discloses a plastic flexible pipe winder and relates to the technical field of winding equipment. The plastic flexible pipe winder orderly comprises a feeding device, a strand oscillator and a winding device, wherein the feeding device, the strand oscillator and the winding device are connected with an electric control device; the plastic flexible pipe winder also comprises an inflating device for inflating a plastic flexible pipe; the inflating device comprises an air inlet pipe connected with an opening of the plastic flexible pipe; the air inlet pipe corresponds to the position of the winding device, and an air stopping device for preventing the air in the plastic flexible pipe from returning to a production procedure section is arranged at upstream of the air inlet pipe. The plastic flexible pipe winder can be joined with a production line of the plastic flexible pipe and can automatically finish winding work of the plastic flexible pipe under the condition of ensuring that the plastic flexible pipe is not stacked and deformed, so the operation is stable and reliable, the automatic degree is high, the production efficiency is improved, the labor intensity of a worker is reduced, the production cost is reduced, and the economic benefit of an plastic flexible pipe enterprise is increased.

The invention relates to the technical field of building ventilation, in particular to an efficient cleaning ventilation structure for a high-rise building. The efficient cleaning ventilation structure comprises a first ventilation pipe and a second channel pipe which are in sliding sleeve connection with each other in the ventilation airflow flowing direction, a stretchable adjusting mechanism for controlling the first ventilation pipe and the second channel pipe to stretch out and draw back is arranged between the first ventilation pipe and the second channel pipe, a filter screen is arranged in the first ventilation pipe, a ventilation fan is arranged in the second channel pipe, a clearing mechanism arranged in a lifting mode is arranged at the top of the first ventilation pipe, the clearing mechanism cleans the filter screen, a blocking mechanism is arranged in the second ventilation pipe and located on the front side of the ventilation fan, and when the filter screen is cleaned, the blocking mechanism blocks the second ventilation pipe. Dust cleared from the filter screen is timely collected into a dust collection assembly through the cooperation of a rolling brush assembly and an air blowing assembly in the clearing mechanism, the cleared dust is prevented from flying away, and the dust is also prevented from being rolled back when the ventilation structure is started again.

A strap-reel frame includes a frame body having a shaft horizontally provided thereon for fitting an inner disc and an outer disc which respectively have the central portion formed with a columnar projection for fitting the opposite ends of a strap reel. A strap-clamping rod is provided above the shaft of the frame body, having a strap-clamping unit assembled thereon. A strap-passing gap can be formed for a strap to pass therethrough after the press member of the strap-clamping unit is pressed inward and the strap in the strap-passing gap can be clamped in position after the press member is released. In addition, two reel end connectors with a comparatively large diameter can be respectively covered over the two columnar projections and then fixed on the inner and the outer disc for fitting a strap reel.

A printer takes up slack in media while suppressing excessive rewinding, and can check the movement of a movable member that moves following change in tension on the media. The printer drives the supply motor in a first operating mode in a slack removal operation that rewinds the recording paper (media) onto a paper roll 2, and stops driving the supply motor when the tension lever (movable member) moves from a slack-side first position toward a second position. In the movement checking operation, the supply motor is driven in a second operating mode with greater output than the first operating mode, rewinds the recording paper on the paper roll, and sets the tension lever to the second position.

The invention discloses a collision-type trolley power device which comprises a trolley reset device and a trolley driving device. The trolley reset device is used for pulling a trolley back to two ends of a collision track and comprises a motor, a reduction gearbox, a coupling, an electromagnetic clutch, a reset roller, a brake, a reset belt, an anti-false-triggering device and a trolley displacement measuring device. The power of the motor is transmitted to the electromagnetic clutch through the reduction gearbox and the coupling, and the reset roller is connected to the electromagnetic clutch. The trolley driving device comprises elastic ropes, elastic rope tension adjusting devices, guiding devices and disengaging devices. The elastic ropes are connected to a trolley through long rods.In a trolley reset process, the elastic ropes are tensioned. In a test, the electromagnetic clutch is disconnected, the trolley accelerates under the tension of the elastic ropes, and the trolley andthe elastic ropes are separated by the disengaging devices when the trolley reaches a predetermined speed. The adjustment of a trolley collision speed can be realized by the numbers of the elastic rope tension adjusting devices and the elastic ropes.

The invention relates to a suspension type unmanned aerial vehicle capture charging device and method. The suspension type unmanned aerial vehicle capture charging device includes a foundation bracket, a locking and charging unit and a capturing and releasing unit, wherein the locking and charging unit includes a linear motion outputting mechanism, a charging column and a capture adapting pole. The linear motion outputting mechanism is mounted on the top portion of the foundation bracket, and the outputting end of the linear motion outputting mechanism is downward. The charging column is mounted at the outputting end of the linear motion outputting mechanism, and the capture adapting pole is mounted on the top portion of an unmanned aerial vehicle. An adapting ball head is arranged on thetop portion of the capture adapting pole, a charging interface for charging the unmanned aerial vehicle is arranged in the center of the top portion of the adapting ball head, and the charging interface is matched with the charging column. The capturing and releasing unit includes a plurality of supporting assemblies, and the supporting assemblies are at the same height and are circumferentially distributed along the foundation bracket. The supporting assemblies are connected with the outputting ends of the supporting assemblies-a driving mechanism. The driving mechanism of the supporting assemblies is used to drive the supporting assemblies to move closer to each other so as to fixedly clamp the adapting ball head, and drive the supporting assemblies to separate from each other to releasethe fitting ball head.

A printer takes up slack in media while suppressing excessive rewinding, and can check the movement of a movable member that moves following change in tension on the media. The printer drives the supply motor in a first operating mode in a slack removal operation that rewinds the recording paper (media) onto a paper roll 2, and stops driving the supply motor when the tension lever (movable member) moves from a slack-side first position toward a second position. In the movement checking operation, the supply motor is driven in a second operating mode with greater output than the first operating mode, rewinds the recording paper on the paper roll, and sets the tension lever to the second position.

The invention provides a ball-throwing type controllable wall scraper and a method for cleaning the inner wall of a sleeve. The ball-throwing type controllable wall scraper comprises a control system, a cutter system, at least one first steel ball and at least one second steel ball, wherein the first steel balls and the second steel balls control the control system to work. The first steel balls are thrown into the control system, so that the first steel balls push a second piston to move downwards, when the second piston moves downwards and enables all cutter feeding blocks to move downwards to push cutters on all rings to pop out of cutter through holes, buckle structures between a first piston and the second piston are connected, and then wall scraping operation can be conducted; the second steel balls are then thrown into the control system, the second steel balls drive the buckle structures to separate from each other, the second piston moves upwards under the action of all reset springs, the cutter feeding blocks also move upwards, so that all the cutters retract to the cutter through holes, and then the wall scraper is restored to an initial state. According to the ball-throwing type controllable wall scraper, at least two steel balls different in size are thrown into a tool, so that the cutters pop out or retract, obstacles on the inner wall of the sleeve are smoothly removed, downhole potential safety hazards are effectively removed, the cutters will not get stuck, and the service life of the cutters is long.

The present invention relates to a container intended for receiving a strip that is studded with balance weights (4) and forms a belt (8) and intended for dispensing the same to a transporting and cutting-to-length mechanism. The container is formed as a casing (2) that is closed substantially on all sides and has two spaced-apart side walls, which receive the belt roller (6) between them, and also a peripheral wall (14), which connects the side walls to one another and has a dispensing opening (16) for the belt (8) to pass through. On the inner side of at least one of the side walls (10, 12) there is formed at least one restrainer (32, 34) that lies against the belt or the belt roller and spreads at an angle to prevent a return movement of the belt or the belt roller.

The invention provides a pipe spraying equipment, which relates to the field of pipe processing. The pipeline spraying equipment includes an injection molding machine, a spraying mechanism, a grinding mechanism and a guide plate. A support is provided on the outer wall of the bottom end of the injection molding machine, and a discharge port is provided on one end of the injection molding machine. The outer wall is provided with a spraying mechanism, the inner wall of the spraying mechanism is provided with annularly distributed nozzles, and the inner wall of the nozzles is provided with a rotating shaft, the output shaft of the rotating shaft is connected to a rotating motor through a coupling, and the outer wall of the rotating shaft is provided with Rotating roller, the outer wall of the rotating roller is connected with the grinding mechanism box, the inner wall of the nozzle close to the rotating roller is connected with the guide plate, and the outer wall of the bottom end of the nozzle is provided with a nozzle. When the extrusion layer is in contact with the nozzle, the grinding block on the extrusion layer can pulverize smaller agglomerated particles and vibrate a small part of the chemical powder stuck in the pipeline spraying equipment. Shedding, to achieve the effect of self-cleaning.

The invention belongs to the technical field of nuclear fuel reprocessing and discloses an oxidizing valence-adjusting equipment for oxidizing Pu (III) to Pu (IV). The equipment mainly comprises an oxidizing tower, a feed liquid receiving tank and a NOX storage tank, wherein a feed liquid outlet is formed at the upper end of the oxidizing tower, a Pu (III) feed liquid inlet and a NOX feed inlet are formed at the lower end, and the feed liquid outlets at the upper parts of the feed liquid receiving tank and the oxidizing tower are connected by virtue of a pipeline; the main body of the oxidizing tower and packing in the tower are both radiation-resistant and nitric acid corrosion-resistant materials; a heating device is arranged on the outer tower wall of the oxidizing tower; the Pu (III) feed liquid enters the oxidizing tower from the Pu (III) feed liquid inlet at the lower part of the oxidizing tower; NOX gas provided by the NOX storage tank enters into the oxidizing tower from the NOX feed inlet at the lower part of the oxidizing tower separately or together with carrier gas; the valence-adjusted feed liquid enters the feed liquid receiving tank from the feed liquid outlet at the upper part of the oxidizing tower. The equipment is large in processing scale, high in NOx utilization ratio, safe and stable in valence-adjusting process and low in processing burden of nitric oxide tail gas.