32results about How to "Reduce the chance of accidental injury" patented technology

The invention discloses a fastening device for assisting in tightening a three-jaw chuck on a lathe. The fastening device comprises a right-angle hanging plate with a bolt hole, wherein an air cylinder is embedded in the horizontal end surface of the right-angle hanging plate; the lower end of the air cylinder is in power connection with a lifting rod; an arc-shaped track is arranged at the lowerend of the lifting rod; and a swinging assembly is arranged in the arc-shaped track. According to the fastening device disclosed by the invention, a plurality of groups of limiting rods which are clamped on double surfaces and are arrayed along the three-jaw chuck in an annular manner are utilized, and the limiting rods can be movably separated from abutting against an extension rod of the three-jaw chuck, so that synchronous rotation or disconnection transmission of the three-jaw chuck is controlled; the position change of oil liquid difference in a sealed pipeline is changed, so that the limiting capacity of rotation of a double-surface clamping structure part is realized, and the ordered working steps of the clamping structure part clamping-sliding out-releasing-sliding back along a circular rail are realized; and the whole process can be controlled by a program, and manual intervention is not needed, so that the problem that a workpiece is not completely fixed due to insufficient force is avoided, and the probability that workers are accidentally injured by a cutter is reduced.

The invention provides an earphone with an in-ear detection function and an in-ear detection method thereof. The earphone comprises a shell, a detection part and a communication circuit board; the shell comprises an outer surface and an inner surface opposite to the outer surface, the detection part is arranged on the outer surface, the communication circuit board is electrically connected with the detection part, and the communication circuit board is electrically connected with the detection part, and is used for sending detection data of the detection piece. According to the earphone with the in-ear detection function and the in-ear detection method provided by the invention, the earphone can stop working when not in the ear, the waste of power supply is avoided, and the endurance of the earphone is improved.

The invention relates to an electronic advertising board convenient to maintain, a screen is formed by combining a plurality of spliced screens, a single small screen is convenient to maintain, the spliced screens can be clamped in first grooves through cooperation of first clamping pieces and arc-shaped grooves under the action of compression springs, direct pulling out or installation is facilitated, through second clamping pieces, a first driving motor is controlled by a computer to drive a sliding rod to slide, so that the second clamping piece clamps a clamping hole in the spliced screen to lock the spliced screen and prevent the spliced screen from falling off, and the spliced screen is connected with a circuit control board for use after a first circuit socket and a second circuit socket are inserted in a matched mode. A computer in the control box controls a second driving motor to drive a first lead screw to rotate so as to drive a first sliding block to slide in a first sliding groove, so that the first sliding block drives the advertising board body to ascend and descend on a stand column, maintenance is convenient, splicing screens are convenient to replace, the structure is simple, and the problems that an existing electronic advertising board is inconvenient to maintain and inconvenient, and the structure is complex are solved.

The invention discloses a building curtain wall, which comprises a building beam frame and a curtain wall body. The building beam frame is arranged on the outside of the curtain wall body. A plurality of evenly distributed second clamping plates are fixedly connected to one side of the connecting plate, and a third clamping plate is provided between the ends of the second clamping plates away from the first clamping plate. The invention rotates the adjusting bolt to make the second gear mesh with the first gear, so that the screw sleeve moves outside the screw rod, and pulls the second light-shielding plate and the first light-shielding plate to fold and shrink, so as to realize the light transmission of the first tempered glass and the second tempered glass Adjustment, easy to adjust the light transmittance of the curtain wall, ensure indoor lighting, use the closed first tempered glass and second tempered glass and the outer plate of the light-proof mechanism to improve the heat preservation effect and sound insulation effect, set the light-proof mechanism to isolate the effect of the light curtain, reduce the Light pollution from building facades.

The automatic gear shifting and lubricating device for wheel and axle loading test table includes a task management unit, a lubricating and gear shifting management unit, a lubricating and cooling system, a pneumatic gear shifting mechanism, a gear box, a pressure sensor and stroke switches. It features the task management unit including microcomputer for running program and RS485 communication card for transmitting the operation command to the lubricating and gear shifting management unit, the lubricating and gear shifting management unit with program running PLC programmable controller to receive and process the operation command and to drive the lubricant oil pump, the cooling fan and the pneumatic solenoid valve, and the pressure sensor set in the lubricating and cooling oil path and stroke switches set on the cylinder to detect signal and feed back the signal to the task management unit. The present invention realizes the automatic control and remote operation in high efficiency and safety.