3results about How to "Short maintenance cycle" patented technology

The application relates to the technical field of ship manufacturing, and discloses a ship rudder system structure and a ship rudder system structure assembling method. The structure comprises a rudder blade, a rudder sleeve, a rudder rod and two sealing plates; the rudder blade has a slotted surface and two opposite working surfaces, the slotted surface is concavely provided with a notch groove, the notch groove is communicated with two avoidance half grooves, the two avoidance half grooves are respectively communicated with the two working surfaces, the avoidance half groove is spaced apart from the end of the notch groove and is uniformly provided with a plurality of lug plates, the lug plate is penetrated with a first through hole; each sealing plate is installed in one avoidance half groove, the edge of the sealing plate is penetrated with a second through hole; a through-hole bolt is penetrated through the second through hole and is screwed in the first through hole, the bolt head of the through-hole bolt is penetrated with a bolt through hole, a flexible wire is penetrated in the bolt through hole, and the two adjacent through-hole bolts are fixedly connected through the flexible wire; the rudder sleeve is inserted in the notch groove; and the rudder rod is penetrated through the rudder sleeve and a positioning pipe in the notch groove. The structure improves the connection mode of the sealing plate and the rudder blade, and reduces the dismounting difficulty of the sealing plate.

The utility model discloses a rail transit air conditioner mixed wind filter screen structure, include: filter screen piece, the filter screen piece has filter screen and the support frame of connecting in the filter screen periphery, the connecting frame has the filter surface for filtering particulate matter, the connecting frame can establish in the air intake and outlet of carriage, and the particulate matter of passing through the air intake and outlet is filtered through the filter surface, the fixed groove of sliding connection filter screen piece is established to the inside of the frame of connecting frame, and the plug -in groove that is communicated with fixed groove is passed through one side of connecting frame, the filter screen piece can be inserted into fixed groove along plug -in groove and slide, the surface of filter screen piece constitutes the filter surface, the elastic locking assembly is connected on the connecting frame and is close to the plug -in groove place, and the locking assembly includes: the rotating part and the fixed part of hinged with rotating part, and rotating part and fixed part are connected through elastic part between, for the elastic support rotating part is attached in the opening of the bottom of connecting frame close to plug -in groove, to block the connecting frame from moving out from plug -in groove.

This invention relates to a crane drive device, comprising a crossbeam and two sets of main beams. The two sets of main beams are movably mounted on the upper end of the crossbeam and connected to it via connecting rods. Slide rails are mounted on the upper ends of both the crossbeam and the main beams. A first guide rail is mounted on the upper surface of the crossbeam near the outer side of the slide rail, and a second guide rail is mounted on the upper surface of the main beam near the outer side of the slide rail. A drive device is movably mounted on the upper end of the main beam. A groove is formed on the upper end of the main beam, and the slide rail is installed within the groove. Pressure-reducing components are mounted at both ends of the slide rail. First drive auxiliary groups are symmetrically mounted on the left and right sides of the drive device and connected to the output end of the drive device via shafts. This invention solves the problem of pulley slippage in existing bridge cranes.