40results about How to "Rapid decline" patented technology

The invention discloses a mortar launching device, which comprises a breech, an elastic member, a blocking member and a cylindrical barrel with a bore, the breech is installed at one end of the barrel, and the breech is provided with a The firing pin in the gun bore, the blocking member includes a bushing and a shoulder arranged outside the bushing, the bushing is set outside the firing pin, the first end of the elastic member abuts against the blocking member, The second end abuts on the breech, and the breech is provided with at least one first vent hole, and when the elastic member is in the original state, the first vent hole communicates with the gun bore; When compressed, the shoulder blocks the first vent hole. The mortar launching device can adopt a barrel inner diameter with a small gap under the premise of ensuring that the mortar shell can slide down reliably and the air is discharged from the first exhaust hole in the gun tail, so that the initial velocity of the shell can be increased and the shooting range can be increased. , while effectively improving shooting accuracy.

The invention discloses pipe die powder for centrifugally casting a nodular cast iron pipe and a preparation process thereof. The pipe die powder comprises the following components in percent by mass: 60-65 percent of Si, 1.5-2.0 percent of Ca, 2.0-3.0 percent of Ba, 1.4-1.6 percent of Mn, 1.0-1.5 percent of Mg, 1.0-2.0 percent of Zr, 0.7-1.5 percent of Al and the balance of Fe; and the granularities of pipe die powder comprise less than 1.5 percent of 80 mu, 25-30 percent of 100-120 mu, 40-50 percent of 140-180 mu, 25-30 percent of 200-300 mu and less than 2.5 percent of more than 300 mu. The preparation process comprises the following steps of: preparing, melting, pouring, cooling, crushing, milling, proportioning granularities and packaging in vacuum. The pipe die powder has the advantages of uniform components, consistent melting points and reasonable granulometric class, and is beneficial to the prolonging of the service life of a pipe die of the nodular cast iron pipe, the reduction of a series of casting defects of cockles, poor nodulizing, surface cracks and the like of the nodular cast iron pipe, the improvement of the quality of the nodular cast iron pipe and the yield, and the lowering of the production cost.

The invention provides an automobile wheel trim. The automobile wheel trim comprises a right rear wheel trim, a left rear wheel trim, a right front wheel trim and a left front wheel trim, wherein the right rear wheel trim, the left rear wheel trim, the right front wheel trim and the left front wheel trim are all formed in such a way that front side plates, upper side plates and rear side plates are connected with each other in sequence in the form of Pi shape; vertical mounting turned-over edges and waterproof turned-over edges are arranged at the left side edges and the right side edges of the right rear wheel trim and the right front wheel trim, respectively; vertical waterproof turned-over edges and mounting turned-over edges are arranged at the left side edges and the right side edges of the left rear wheel trim and the left front wheel trim, respectively; mounting holes are formed in the mounting turned-over edges; mounting slots butt-jointed with an automobile shell are formed in the lower edges of the front side plates of the right rear wheel trim and the left rear wheel trim; and mounting slots butt-jointed with the automobile shell are formed in the lower edges of the rear side plates of the right front wheel trim and the left front wheel trim. The automobile wheel trim with an integrated structure, provided by the invention, has the advantages of simple structure and easiness in mounting.

The invention relates to agricultural machinery, in particular to a multi-ridge multipurpose ponding machine. The multi-ridge multipurpose ponding machine pulled by traction equipment comprises a soilloosening mechanism, more than three ridging plates, travelling wheels and a ponding mechanism. The soil loosening mechanism comprises a frame and a rotating shaft. Two ends of the rotating shaft areconnected with the frame. A soil turning blade is arranged on the rotating shaft. The rotating shaft is driven by a power device. Along the advance direction, the ridging plates are arranged in rearof the soil loosening mechanism, and are distributed from one end of the frame to the other end. The travelling wheels are arranged on two ends of the frame. The ponding mechanism is mounted in rear of the soil loosening mechanism, corresponds to gaps among the ridging plates, and comprises a sliding rail, a ponding rod and a conveying belt. The sliding rail is arranged upwardly, and the ponding rod is arranged in the sliding rail slidably. A shifting lever is arranged on the conveying belt. A stop block is arranged on the ponding rod, and is matched with the shifting lever on the conveying belt to enable the ponding rod to slide upwardly in the sliding rail. The conveying belt is connected with the travelling wheels through chain transmission, and is driven by the travelling wheels. The multi-ridge multipurpose ponding machine has the advantages that soil turning, ridging and ponding are performed at the same time, and accordingly, time and labor are saved.

The invention discloses a sorting device for cutting potatoes into strips, which comprises an adjusting part, a sorting part and a supporting part. Located on the upper part of the inner side of the two baffles, the adjustment part includes a moving rod, one end of the moving rod is connected to the inner side of the baffle through a guide, and the moving rod moves along the length direction of the substrate under the guidance and support of the guide, and the lower side of the moving rod A rocking rod is arranged along its length, and a driving part for driving the moving rod to reciprocate is installed on the supporting part. The second motor for the rotation of the roller; this potato slice sorting device uses the height difference between regular potato slices and irregular potato slices to realize the sorting of potato slices, realizes the rapid sorting of potato slices, and the potato slices The sorting efficiency is high and the accuracy is high.