7 results about "Close range" patented technology

The invention provides a construction method of close-range down-traversing operation lines at initial stages or receiving stages of a shield. The formation of water flow channels and the subsidence of overlying soil layers are effectively avoided through the following steps: monitoring an operation line; pre-reinforcing the operation line; sealing steel sleeves of tunnel portals; performing shield excavation; performing synchronous grouting by an anterior shield; performing lining segment assembling; performing double-liquid secondary grouting-reinforcement on earth within a range influenced by the down-traversing operation line of the constructed tunnel. The deformation of the operation line is guaranteed to be controlled within a safe and reasonable region, the long-term stability of the constructed tunnel and the operation line is improved, and the construction quality is greatly improved.

The invention discloses a data transferring system and a data transferring method of an intelligent metering device. The data transferring system comprises a plurality of intelligent metering devices, power supplies embedded in all the intelligent metering devices, a data acquisition module, a data transmission module, wireless terminal equipment adaptive to the intelligent metering devices in the same area, and a remote monitoring host, wherein the power supplies supply power to the data acquisition module and the data transmission module, the data acquisition module acquires data of the intelligent metering devices, the data transmission module can transmit the data to the wireless terminal equipment wirelessly in a close range, and the wireless terminal equipment transmits the data to the remote monitoring host in a master control room wirelessly and remotely, and the remote monitoring host is used for recording and processing data. The data transferring method comprises the steps of presetting the meter reading time by the data transmission module, acquiring data of all meters in the same network segment in a time-phased manner by the data acquisition module, and transmitting the data to the wireless terminal equipment by the data transmission module in a close range, and remotely transmitting the data to the monitoring host wirelessly by the wireless terminal equipment for recording and processing. The data transferring system and the data transferring method are applied to the field of intelligent metering devices.

The invention discloses an optical signal detector and relates to an active detector capable of detecting connection and disconnection of optical fiber. The active detector comprises an active light emitting machine, an active light receiving machine and an alarming main machine. The active light emitting machine comprises a light emitting tube and an emitting circuit. The active light receiving machine comprises a light receiving tube and a receiving circuit. The light emitting tube and the light receiving tube are both butt jointed with an optical fiber close range correlation optical fiber object sensor. The optical fiber close range correlation optical fiber object sensor comprises optical fiber channels, baffles, connecting rods and falling blocks arranged on two sides of the optical fiber close range correlation optical fiber object sensor, optical fiber connected with the light emitting tube and the light receiving tube respectively passes from the optical fiber channels on two sides of the optical fiber close range correlation optical fiber object sensor, and two ends of optical fiber are both aligned to the positions of the baffles. The active detector has all functions of light sources and data transmission, is convenient to use, can reduce a protection range so as to protect an object smaller than 1 square centimeter, is not limited by size of the object, and can be used for valuable objects, preservation of cultural relics and the like.

The invention discloses a high-safety electric saw special for felling. The electric saw comprises a strip-shaped plate, two symmetrically-arranged supporting frames are arranged at the left end of the lower surface of the strip-shaped plate, first clamping pieces of the supporting frames are fixedly connected to the lower surface of the strip-shaped plate, a bottom plate is arranged at the fixedends of first electric telescopic rods of the supporting frames, four evenly-distributed trundles are arranged on the side face of the bottom plate, and an adjusting frame is arranged at the right endof the upper surface of the bottom plate. The high-safety electric saw special for felling is convenient to move, convenient to fix and good in stability, can be limited and fixed; the inclination angle and the height of the electric saw can be adjusted; and the position of the electric saw can be indirectly adjusted through the driving device, so that the electric saw can complete felling work,damage to the health of a feller due to close-range operation of wood chips can be avoided, meanwhile, threats to the health of the feller when trees topple over can be avoided, safety is high, and use is convenient.

The invention discloses a projectile simulation launching device, and belongs to the field of the armament science and technology. The device comprises a gas gun launching unit, a pressure relief brake control unit, a rotating speed control unit and a speed measuring device unit; the gas gun launching unit comprises a high-pressure gas chamber, a launching pipe, a piston component and a projectile support; the pressure relief brake control unit comprises a gas storage bottle, an electromagnetic valve (7), an electromagnetic valve (6), an electromagnetic valve (3), a data acquisition unit, a signal amplifier and a control main center; the rotating speed control unit comprises the projectile support and a launching pipe rifling; and the speed measuring device unit comprises a laser launching and receiving device, a laser controller, the data acquisition unit and the control main center. The projectile simulation launching device has the beneficial effect of close-range, high-precision, high-repeatability and environment-friendly launching and meets the requirement of the finish effect test study.

An intelligent manufacturing device for a precision motor is disclosed, including a control box, A tool placement mechanism is arranged on one side outer surface of the control electric box, the otherside of the control electric box is fixedly installed with a finite position mounting ring, The outer surface of one side of the limit mounting ring is provided with a bag tape breaking alarm device,the outer surface of the lower end of the limit mounting ring is fixedly mounted with a mounting bottom box, the outer surface of one side of the mounting bottom box is fixedly mounted with a numerical control floor, and the outer surface of the lower end of the numerical control floor is fixedly mounted with an equipment base. through the tool placement mechanism, it can help people detect equipment failure, timely maintenance of the equipment, through the bag broken alarm device, in the working process of the bag broken, can let people intuitively know that the bag broken, remind people todeal with it in time, through transparent protection observation mechanism, can let people observe the working conditions at close range.