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

The invention discloses an underground pneumatic transfer device, which comprises a rotary fixing device, a central pillar and a lifting rod; the rotary fixing device is connected with the bottom part of the central pillar; the top end of the central pillar is provided with a fixing ring, and the lower end of the central pillar is provided with a pneumatic motor and a worm speed reducer; one end of the pneumatic motor is connected with an operating valve through a pipeline A and a pipeline B; the air inlet of the operating valve is connected with a high-pressure gas source; the other end of the pneumatic motor is connected with the worm speed reducer; the output shaft of the worm speed reducer is connected with a roller; a steel wire rope is arranged in the roller; the tail end of the lifting rod is provided with a leading sheave, and the front end of the lifting rod is provided with a lifting tackle; the steel wire rope penetrates through the leading sheave and the lifting tackle. According to the underground pneumatic transfer device disclosed by the invention, energy is provided by high-pressure air by replacing electricity, so the use safety is enhanced, and the use range is broadened.

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 discloses a method for high-frequency quenching of composite steel, which comprises high-frequency quenching equipment for composite steel. The quenching equipment includes a main body of equipment. A cleaning mechanism is fixedly connected, and a quenching mechanism and a smoke absorption mechanism are installed on one side of the main body of the equipment and located directly above the cooling box. The quenching mechanism is located inside the smoke absorption mechanism. By adding The flue gas absorption mechanism can absorb the high-temperature toxic gas generated by cooling during the quenching process of metal workpieces through this device, prevent its diffusion from affecting the construction environment of workers, and reduce the damage to human health. At the same time, the added transmission mechanism cooperates with the clamping and fixing mechanism The quenching process can be carried out on the metal workpiece of the ring gasket, and compared with the traditional manual quenching process, the quenching efficiency is high, and the probability of accidental injury during the quenching process is reduced. At the same time, it can work continuously and increase the working efficiency of the device.

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 relates to the technical field of PCB board processing, and specifically discloses an easy-to-operate PCB board welding platform, including a workbench main body, a table top, a turning board, a tool rack, and a storage box, and the table top includes a table panel, a table frame and a baffle The liner bar and the table panel are fixedly connected to the front of the table frame near the top, and the center of the left and right sides of the rotating plate frame is fixedly connected to the rotating shaft near the top. The table top and the turning board are connected through the rotating shaft, so that the turning board can be flipped flexibly, and it plays the role of quickly switching the conversion of the PCB board welding tooling, saving space and improving the work efficiency and welding accuracy. Through the opening and closing spring The positioning pin releases or restricts the rotation of the turning plate, so as to achieve the switching of fast fixing and releasing the rotation restriction of the turning plate, so that the turning plate can be switched quickly and flexibly.

The present application provides an earphone with an in-ear detection function and an in-ear detection method thereof, including a casing, a detection part and a communication circuit board, the casing includes an outer surface and an inner surface opposite to the outer surface, and the detection part Arranged on the outer surface, the communication circuit board is electrically connected to the detection part and is used for sending detection data of the detection part. The earphone with in-ear detection function and the in-ear detection method provided by the present application can make the earphone stop working when it is not in the ear, avoid wasting power, and improve the battery life of the earphone.

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 present invention relates to a high-voltage wire deicing device and a working method, pertaining to the technical field of power maintenance equipment. The device includes: a frame; an opening is arranged on one side of the frame and used for placing wires into the frame; a roller is arranged in the frame, the middle surface of the roller is concave relative to both ends of the roller, so that the roller can be put on a wire to roll and drive the device to move while remaining stable; and two positions, at both sides of the roller, on the frame are both provided with arc hoops, wherein each arc hoop is linked with the frame via a cylinder, and one side of the arc hoop is a blade edge. The working method of the device comprises the steps of placing the wire under the roller inside the frame from the opening, clamping the wire via the arc hoops by controlling the cylinders, moving the device and carrying out deicing operation by using the blade edges of the arc hoops. The high-voltage wire deicing device has the advantages of operation easiness, good effect for deicing, high adaptability of different high-voltage wire conditions, convenience for carrying and on-site installation, saving of manpower and material cost and reducing of the probability of accidental injuries to an operator.

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.

The invention discloses a single-point rapid pearl extraction method based on pearl cultivation, which belongs to the field of clam body pearl extraction. A single-point rapid pearl extraction method based on pearl cultivation can be reversed by a single point during the pearl extraction process. The use of the clamp can reduce the difficulty of alignment. At the same time, in the process of cutting open the pearl oyster, one-handed operation can be performed by one-point reverse clamping, and the other hand can assist in fixing the pearl oyster, thereby improving the operation stability. Compared with In the prior art, two knives are used to extract the pearls, which effectively improves the stability and reduces the probability of accidental injury of the bead extractors. At the same time, the use of soft cotton during the scrubbing process can realize simultaneous extraction of more pearls. Scrubbing improves work efficiency. Compared with manual scrubbing, it effectively avoids accidental damage to the surface of pearls caused by hard objects such as nails, thereby effectively reducing the damage rate and reducing the difficulty and workload of later surface treatment of pearls.