52results about How to "Achieve safety protection" patented technology

The invention discloses a shared type intelligent parking spot lock and a control method. The lock comprises a driving motor, a base, a movable bracket, an induction flip cover block arm, a man-machine conversation unit, a coin inserting unit, a control unit, a sensor, an RFID (radio frequency identification) reader-writer and the like, wherein the driving motor is connected with a power supply; the movable bracket is mounted on the base; the induction flip cover block arm driven by the motor is mounted on the movable bracket; an induction flip cover is covered on a block arm body; the sensor and the RFID reader-writer are mounted on the upper surface of the induction flip cover; and the coin inserting unit and the man-machine conversation unit are arranged one the lower surface of the induction flip cover. The lock can be mounted on the outside of any parking spot, and is energy-saving, environment-friendly and wide in application range. Wireless control of parking, berthing and vehicle moving is achieved by electrical signal transmission functions of a microprocessor, the sensor and the reader-writer, besides parking is achieved by signal instructions, limitation of vehicle movement and payment parking are achieved, the problem that parking resources are wasted in parking spot management of a conventional parking spot lock is solved, and further a win-win parking spot management method is provided.

The invention discloses an indwelling needle comprising a needle head assembly and an injection connector assembly. The needle head assembly comprises a sleeve seat and a puncture needle, wherein the sleeve seat is divided into an injection cavity and a needle seat cavity by virtue of a separation plug, a handheld part is arranged on a needle handle of the puncture needle, a steel needle protection jacket is sleeved on the outer wall of the needle seat cavity and has a draw-type structure formed by 3 to 4 sections of sleeves, a needle handle check ring is arranged at the rear end of the first section of sleeve, a buckle is arranged between the last section of sleeve and the outer wall of the needle seat cavity, a draw locking mechanism is arranged between each two adjacent sleeves, and a gap corresponding to the handheld part of the needle handle is arranged at the rear end of each section of sleeve. According to the invention, when the puncture is finished and the puncture needle is withdrawn, the steel needle protection jacket is unfolded section by section and is pulled to be separated from the sleeve seat after the puncture needle is completely placed in the steel needle protection jacket, and the puncture needle is wholly wrapped in the steel needle protection jacket which is unfolded, thereby preventing the needle tip from stabbing and wounding medical staff after the puncture is finished, and further, achieving the aims of safety protection and cross infection prevention.

The invention discloses a safety cable bridge, which comprises a main body of the cable bridge. There is a sealed installation cavity inside the main body of the cable bridge. A plurality of chutes communicating with the installation cavity are provided on both sides of the main body of the cable bridge. Each chute Extending upward from the bottom, the cable is set through the chute on the main body of the cable tray. The cable is laid in the chute on both sides and passes through the entire installation cavity. In the installation cavity, more than one partition is arranged along the width direction of the main body of the cable tray. Each partition corresponds to a cable. The top of the partition is fixedly connected to the main body of the cable bridge. The bottom of the partition is the movable surface. The movable surface of the bottom of the partition forms an arc-shaped winding part, and the cables are arranged Fixed in the winding section. The invention isolates the active cables and the passive cables to prevent the mutual influence between the cables, and at the same time uses the spacer as a winding protection for the cables when an accident occurs, further increasing the safety of the cables and improving the safety performance of the cable tray .

The invention discloses a wind and sand preventing method through an adjustable fence, and relates to a wind and sand preventing method through a fence which is perspective and has the functions of safety protection, wind preventing and sand and dust preventing simultaneously. The defect that in the prior art, fully-circulating air cannot be obtained through a totally-closed type fence is overcome, and the defects that in the prior art, an open-type fence cannot effectively control the magnitude of force of wind penetrating through the fence, and cannot effectively protect sand and dust are overcome. The magnitude of stress through which a hanging curtain is blown up by the wind is adjusted through magnetic field attraction force between a reset magnet at the bottom of the hanging curtainand fixed magnets on the fence, the movement range of the hanging curtain is adjusted through a clamping rod which can move up and down, the magnitude of the force of the wind passing through the fence is further controlled effectively, the perspective property of the fence is achieved, meanwhile, the purposes of safety protection and effective control over wind preventing and sand and dust preventing are achieved, and the technical effect in the aspect of fence wind penetrating volume adjustment is particularly prominent.

This invention discloses an optical gating protecting circuit of laser device light-conductive system, which is to cascade normally opened contact of time-delay relay (LA) with normally-closed contact (6Ja) of common relay and to cascade another normally opened contact of time-delay relay (LB) with normally-closed contact (7Ja) of common relay and to cascade; then to parallel connect the above two cascaded circuits then to cascade with relay (8J); finally to parallel connect the whole above circuit between 24VDC and V line of optical gating control circuit and one normally-closed contact (1) of relay (8J) is cascaded in starting returning circuit of laser device.