汽车转向管柱护罩

汽车仪表台

Special ring taking device for obstetrics and gynecology department

The invention discloses a special ring taking device for gynaecology and obstetrics, and relates to the technical field of ring taking devices. The vaginal dilatation mechanism comprises a dilatation tube formed by at least three dilatation plates in a surrounding mode. A through clamping channel is formed in the expansion tube; and the adjusting assembly is arranged at one end of the expansion tube and is configured to synchronously drive the at least three expansion plates to slide oppositely or oppositely. The protection tube of the protection assembly can wrap the outer sides of the pair of clamping heads in the process that the shell moves to find the position of the contraceptive ring, the clamping heads are prevented from scratching the vaginal wall, meanwhile, when the position of the contraceptive ring is found, the tissue around the contraceptive ring can be pushed open through the two arc-shaped plates of the protection tube, and therefore the contraceptive ring can be effectively ...

Bimetal alloy modified carbon nanotube electrocatalyst as well as preparation method and application thereof

The invention discloses a bimetallic alloy modified carbon nanotube electrocatalyst and a preparation method and application thereof.The preparation method comprises the steps that a nitrogen source and a biomass carbon source are sequentially added into deionized water and stirred to be dissolved, and a solution A is obtained; dissolving a soluble cobalt salt, a soluble platinum salt and ethylenediamine tetraacetic acid in deionized water, stirring to uniformly mix, and then adjusting the pH value of the solution to obtain a solution B; and adding the solution B into the solution A at a constant speed, uniformly dissolving, then drying by distillation, and calcining a product obtained after drying by distillation in a nitrogen atmosphere to obtain the bimetallic alloy modified carbon nanotube electrocatalyst. According to the invention, co-doping of cobalt, platinum and nitrogen on the carbon substrate is realized, the bimetallic alloy modified carbon nanotube electrocatalyst is prepared ...

Installation device for workshop power supply line

The invention relates to the technical field of electric wire installation, in particular to an installation device for a workshop power supply circuit, which comprises a hose clamp, two connecting pieces are arranged at an opening on one side of the hose clamp, a plurality of wire fixing mechanisms are arranged on one side of the hose clamp, and the wire fixing mechanisms are fixedly connected with one side of the hose clamp through an installation mechanism. A wire fixing mechanism is arranged on the hose clamp, a reinforcing mechanism is arranged on the hose clamp and located on the outer side of the wire fixing mechanism, a plurality of installation pieces are fixedly installed on the outer side of the hose clamp, the wire fixing mechanism comprises two sets of fixing clamping pieces, and elastic mechanisms are arranged on the upper surfaces of the installation pieces and located above the fixing clamping pieces. The reinforcing mechanism is arranged, the stress fixing area of the hose ...

Negative Poisson's ratio self-adjusting administration bandage device

The invention discloses a negative Poisson's ratio self-adjusting administration bandage device. The negative Poisson's ratio self-adjusting administration bandage device is formed by connecting nodules and fibrous connectors. The device is used for dosing through pores between nodules, and when the device is subjected to a tensile load effect generated by wound swelling, corresponding translation generated by the nodules connected by the stretched fibrous connectors causes a negative Poisson's ratio auxetic behavior of the structure, so that the porosity of the dosing bandage device is increased, and the dosing area is correspondingly increased; meanwhile, the overall area of the structure is increased, so that the stress range of the structure is increased, stress concentration is reduced, and breathability and comfort are improved. The drug delivery bandage device has excellent air permeability on the wound surface and the periphery of the wound, can effectively relieve drug delivery ...