5results about How to "Stable expansion" patented technology

This utility model discloses a remote terminal port cable fixing structure, belonging to the field of remote terminal technology. This remote terminal port cable fixing structure includes a remote terminal body and a fixing component. The fixing component is disposed outside the remote terminal body and is used to fix the connection between the port and the coaxial cable connector to prevent it from falling off or loosening. The remote terminal body includes a housing, and the front of the housing has several coaxial cable ports. The fixing component includes several first fixing rings, each of which is fitted onto the outside of several coaxial cable ports. A second fixing ring is provided on the side of the first fixing ring away from the housing. First connecting seats are installed on both outer sides of the first fixing rings, and second connecting seats are installed on both outer sides of the second fixing rings. Positioning grooves are formed inside the first connecting seats near the upper and lower ends. Positioning plates are inserted into both positioning grooves, and one side of each pair of positioning plates is fixedly connected to the side of the second connecting seat near the first connecting seat.

The female metal catheter comprises a catheter body, a catheterization cavity and an air injection cavity are formed in the catheter body, a catheterization hole is formed in one end of the catheter body, a catheterization connecting pipe is arranged on the outer side of the other end of the catheter body, and the catheterization cavity, the catheterization hole and the catheterization connecting pipe are communicated; a ventilation window is formed in the position, close to the catheterization hole, of the outer side of the catheter body, an annular air bag is arranged at the position, corresponding to the ventilation window, of the outer side of the catheter body, and a connecting cavity is formed in the other end of the catheter body. The female metal catheter provided by the invention is made of a metal material, is high in strength and good in durability, is not easy to age and deform, can be stably used for a long time, and reduces the pain and inconvenience caused by frequent replacement of the catheter to a patient; a perfect urethral catheterization and air injection channel is provided, urethral catheterization is smooth, through the arrangement of the one-way valve, air backflow is prevented, stable expansion of the annular air bag is ensured, and the fixing effect is enhanced.

The utility model relates to the field of civil construction discloses a housing construction masonry construction handling device, including the bottom plate, the top fixed connection of bottom plate has two supports, two the other end fixed connection of support has the apron, the one side fixed connection of apron has drive assembly, the one side fixed connection of drive assembly has the roll column, the outside fixed connection of roll column has waterproof shed, the inside fixed connection of waterproof shed has the side, the outside fixed connection of side has two folding plate no.

The utility model belongs to the technical field of agricultural greenhouses, and particularly relates to a folding heat preservation quilt for a greenhouse. According to the main technical scheme, the folding heat preservation quilt for the greenhouse comprises a heat preservation layer formed by soft plastic plates, and two side faces of the heat preservation layer are covered with protective layers formed by fiber woven cloth. Heat preservation reinforcing layers formed by aerogel layers are adsorbed on the two side faces of the heat preservation layer. According to the folding heat preservation quilt for the greenhouse, the heat preservation performance can be greatly improved, and the folding heat preservation quilt is more suitable for heat preservation greenhouses in cold regions with large day and night temperature difference.

The present application belongs to the technical field of engine, and particularly relates to an engine combustion system and a control method thereof. The engine combustion system comprises a cylinder and a jet ignition device. The cylinder comprises a main combustion chamber. The jet ignition device comprises a shell, the shell is provided with an ignition chamber and a spray hole, the ignition chamber is communicated with the main combustion chamber of the cylinder through the spray hole, the spray hole comprises a first spray hole and a second spray hole, the first spray hole and the second spray hole are respectively communicated with the ignition chamber and the main combustion chamber; the inner diameter of the first spray hole gradually decreases along the direction from the inlet of the first spray hole to the outlet of the first spray hole; the inner diameter of the second spray hole gradually increases along the direction from the inlet of the second spray hole to the outlet of the second spray hole; the inlet inner diameter of the first spray hole at the inlet of the first spray hole is smaller than the inlet inner diameter of the second spray hole at the inlet of the second spray hole. By using the engine combustion system in the technical solution, the jet penetration and the flame energy density can be simultaneously improved, so that the jet ignition efficiency is improved.