4 results about "Cold weather" patented technology

The invention provides a novel stainless steel self-locking drainage tube joint fixing device which comprises an upper side tube, a lower side tube, rubber band rings, an anti-skid plate, fixing bands, a limiting jacking frame structure, an inserting ring, an open groove, inverted teeth, an upper side ring, an upper side band, a buffer connecting frame structure, a lower side ring, a lower side band and a middle protective outer sleeve structure. The lower side tube is arranged at the lower part of the upper side tube; the rubber band rings are respectively in sleeving connection outside the upper side tube and the lower side tube; and the fixing bands are respectively in sleeving connection to a joint of the upper side tube and the anti-skid plate and a joint of the lower side tube and the anti-skid plate. According to the invention, a jacking spring is in sleeving connection outside a longitudinal rod, which is beneficial for utilizing a pulling handle to drive the longitudinal rod to be pulled upwards in the disassembling process, so that a limiting clamping base is separated from the inverted teeth to facilitate pulling the fixing bands out of a conveying frame; a buffer springis in sleeving connection outside a connecting bolt, which is beneficial for achieving the buffering function on a joint of the upper side band and the lower side band in hot or cold weather.

The invention belongs to the technical field of LED driving power supplies, and particularly relates to a software-defined LED driving power supply. The software-defined LED driving power supply comprises a driving power supply body, wherein a protective sleeve is arranged on the outer side of the driving power supply body; the protective sleeve comprises a first outer shell and a second outer shell; the first outer shell is provided with a clamping groove in the end face making contact with the second outer shell; and the second outer shell is provided with a clamping strip clamped with the clamping groove on the surface making contact with the first outer shell. According to the invention, opening and closing of the rectangular heat dissipation groove are achieved through rotation of a heat conduction plate, so that the rectangular heat dissipation groove can be opened for heat dissipation in hot weather, the rectangular heat dissipation groove is sealed through the heat conduction plate in cold weather, the external cold air can be prevented from invading the driving power supply body to result in damage of the driving power supply body. According to the design of the invention,the driving power supply body can be prevented from being burnt down due to overheating, and meanwhile, the situation that the working performance of the driving power supply body is reduced and eventhe driving power supply body cannot work normally due to cold invasion is also avoided.

The invention relates to a wrench. The wrench comprises a handle part and a head part which is at least arranged at one end of the handle part, wherein the handle part is in the shape of a long plate; the head part comprises a body and an opening part; the opening part is the same as half of an outer contour of a nut; the opening part is provided with two bent angles; a magnetic substance is arranged in the head part body; vertical grains extending in the length direction of the handle part are arranged on the side surface of the handle part; and the bent angles of the opening part are subjected to thermal treatment. The wrench has the advantages that: the magnetic material is arranged in the head part body of the wrench, so that at a position inconvenient for placing hands, the wrench can be placed on an inclined plane; friction between a palm and the wrench is increased by vertical grains in the wrench even the wrench is liable to slide during process and is inconvenient to hold when a worker wears gloves for operation in cold weather, so that the wrench is not liable to slide even the worker wears the gloves, thereby improving the processing efficiency; and hardness at bent parts of the opening part is relatively high, so that the service life of the wrench is longer.