42results about How to "Safety at Work" patented technology

The invention discloses an electric leakage prevention heating floor and a manufacturing method of the electric leakage prevention heating floor. The electric leakage prevention heating floor comprises a heating plate and a heat preservation plate, wherein the heating plate and the heat preservation plate are packed in a retracting film in a plastic mode, the heating plate comprises a carbon crystal heating plate and a polyester glue film, and the carbon crystal heating plate is packed in the polyester glue film in a plastic mode. The electric leakage prevention heating floor is simple in structure, leaked currents under the wet laying condition of the heating floor are reduced greatly, a small number of leaked currents are led to the underground, the potential safety hazard is avoided, and the electric leakage prevention heating floor can work normally and safely.

The invention discloses a large-caliber reflection-type light guide machine and a working method thereof, belonging to the technical field of solar energy application. The large-caliber reflection-type light guide machine consists of an azimuth angle drive device, a height angle drive device, a focus lens group, a sun location system, a focusing device and an optical fiber beam. The focusing device is used for adjusting a receiving end surface of the optical fiber beam to a focal point of the focus lens group, and the focus lens group is driven by the azimuth angle drive device and the height angle drive device, so that the focus lens group can follow the sun, the infrared ray in the incidence light is eliminated by utilizing a filter lens of the focus lens group, and the uniformity of the intensity of the focus spot can be realized by virtue of a light homogenizing cavity of the focus lens group; the sun location system adopts a photosensitive element to provide a sun roughly location signal and utilizes a high temperature sensor to provide a precise position signal of the focus spot. By adopting the large-caliber reflection-type light guide machine, the infrared ray in the sun focus light is eliminated, the uniformity of the intensity of the focal spot can be realized, the service life of the optical fiber beam can be greatly prolonged, and the position detection reliability of the focus spot can be improved by utilizing the high temperature sensor.

The invention relates to an automatic dust removing type electric appliance box, an outdoor unit and an air conditioning unit. The automatic dust removing type electric appliance box comprises an electric appliance box shell. Windows are formed in the electric appliance box shell and provided with filter screens. The electric appliance box shell is provided with automatic dust removing devices which comprise dust removing components. The dust removing components can reciprocate along the filter screens so as to clean the filter screens. Due to the fact that the automatic dust removing devices are arranged in the positions of the filter screens, dust accumulated on the filter screens can be automatically removed, it is guaranteed that air flows into the windows normally to take away heat in the electric appliance box, and safe and normal work of electronic elements is guaranteed.

The invention relates to villus removing equipment, in particular to villus removing equipment for wool for writing brush making. The technical problem to be solved by the invention is to provide the villus removing equipment for the wool for writing brush making, the villus removing equipment can help staff fix the wool, and thus working is convenient. The provided villus removing equipment for the wool for writing brush making comprises an installation frame, support rods, placing plates, first springs, combs, an elastic rope and the like. The support rods are arranged at the bottom in the installation frame in a bilateral symmetry mode. Placing plates are connected to the top ends of the support rods. The first springs are arranged on the parts, on the front sides of the support rods, at the bottom in the installation frame in a bilateral symmetry mode. The first springs are arranged on the inner sides of the support rods. The combs are connected to the top ends of the first springs. The elastic rope is connected to the lower portion of the inner left wall of the installation frame. According to the villus removing equipment, the wool is fixed to the placing plates first through fixing devices, then villus removing treatment is conducted on the wool through the combs, and combed villi are cut off with scissors when the wool is fixed.

A magnetic coupling relates to a transmission device, and is simple in process, easy in assembly, firm in fixing of permanent magnets, high in use reliability and capable of preventing the permanent magnets from shedding and from sliding along the surface of a rotor. Two end rings are integrally made at two ends of a sleeve respectively, a plurality of rectangular grooves are uniformly arranged on the outer circumferential surface of each end ring, partitions are axially arranged on the outer side of the sleeve, two ends of the partitions are inserted into the corresponding rectangular grooves of the end rings, a mounting groove is formed among the outer side of the sleeve, each two adjacent partitions and the two end rings, a plurality of outer permanent magnets are inlaid in the mounting grooves, the sleeve inlaid with the outer permanent magnets and the two end rings are placed in a shell together, the two end rings are connected with the shell, the outer edge of the radial cross section of an inner rotor yoke is a polygon, an inner permanent magnet is adhered on each outer side of the inner rotor yoke, the inner rotor yoke adhered with the inner permanent magnets is placed in a casing together, and the casing is placed in the sleeve. The magnetic coupling is used for motors.

The invention discloses a multi-roller rope withdrawing and releasing device comprising a base. A guide roller bracket is fixed to each side of the base correspondingly, a plurality of rope withdrawing and releasing rollers are mounted at the outer end of each guide roller bracket, a middle connecting frame is connected to the inner ends of the guide roller brackets, a rope releasing rotating shaft is connected to the middles of the two guide roller brackets, a plurality of rope pressing devices are arranged at both ends of the rope releasing rotating shaft, a reel bracket is arranged at each end of the middle connecting frame correspondingly, a rope withdrawing rotating shaft is arranged between the two reel brackets, rope withdrawing reels matched with the rope pressing devices on the side are arranged at both ends of the rope withdrawing rotating shaft, a rope hanging roller component is arranged on each rope withdrawing reel, a limiting collision block is arranged on each rope hanging roller component, a limit switch is arranged on each limiting collision block in a matched manner, and a rope guide device is arranged on each guile roller bracket. The multi-roller rope withdrawing and releasing device has the advantages of reliable and stable working, high safety and long service life.