34results about How to "Reduce frontal impact" patented technology

The invention discloses a wave retaining wall for water conservancy dam. The wave retaining wall comprises a plurality of wall units, wherein each of the wall units comprises a base, a first fence wall, a second fence wall, a third fence wall and a water retaining wall, the first fence wall is arranged on the base and comprises a plurality of first wave retaining strips, and a first flow splitting gap is formed between every two adjacent first wave retaining strips; the second fence wall is arranged on the base and is located behind the first fence wall, the second fence wall comprises a plurality of second wave retaining strips, the second wave retaining strips correspond to the first flow splitting gaps, and a second flow splitting gap is formed between every two adjacent second wave retaining strips; the third fence wall is arranged on the base and is located behind the second fence wall, the third fence wall comprises a plurality of third wave retaining strips, and the third wave retaining strips correspond to the second flow splitting gaps; and the water retaining wall is arranged on the base and is located behind the third fence wall. According to the wave retaining wall, the impact force of water waves can be reduced step by step through the first fence wall, the second fence wall and the third fence wall, and therefore the impact of the water waves on the water retaining wall can be reduced, and the service life of the wall element is prolonged.

The invention discloses a stable floating-debris-preventing floating tube type hydraulic electrogenerating device which structurally comprises an anti-blocking cover, a sealing floating tube, a connecting frame, a fixing ring, a support, a barrel body, a horizontal water diversion plate and a bottom water diversion plate. The left side of the anti-blocking cover is nested to the outer surface of the right side of the barrel body, and the sealing floating tube is fixed above the barrel body. Compared with the prior art, the contact area between the device and water is enlarged on the horizontalface and the vertical face through the horizontal water diversion plate and the bottom water diversion plate, impact force of water flow on the front face of the device is reduced, the counter-actingforce of the device on water is improved, device is higher in stability, the problem that the device direction is changed, water flow cannot impact a water wheel, and power generation efficiency is affected is avoided, a rotating body has rotating force by means of accelerated water flow inside the barrel body through a water blocking plate, a water blocking block is impacted by water to enable an impurity grabbing net to be shrunk to grab small impurities and fish which penetrate through the anti-blocking cover in water flow, the small impurities and fish are thrown out through movable exhaust holes, and the rotating water wheel is prevented from being entangled or damaged.

The invention discloses a seawall flood season protection structure and a construction method thereof. The seawall flood season protection structure comprises a wave dissipating device, a wave power generation device, a dam and a buffer system. The wave dissipating device is movably connected to a first supporting structure. The first supporting structure comprises two parallel first supports. The two ends of the first supporting structure are fixedly connected to a speed reducing slope and a current stabilization slope through a foundation pile and a first positioning pile correspondingly. The wave power generation device is arranged at the tail end of the first supporting structure. A second supporting structure is arranged at the other end of the first positioning pile. The buffer system penetrates through the speed reducing slope, the current stabilization slope and the dam. The method includes the steps of surveying and setting out, construction of the foundation pile and the positioning pile, construction of the buffer system, construction of the wave dissipating device and the wave power generation device, construction of the second supporting structure and construction of the dam. By means of the seawall flood season protection structure and the construction method thereof, flood season installation protection of seawalls with different lengths and widths can be met, sediment loss is reduced, a good seawall protection effect is achieved, seawater power generation can be achieved, and economical benefits are remarkable.

The invention relates to a back-swept disc turbine impeller, which comprises a disc, blades and a stirring shaft; the blades are arranged along the circumference of the disc; the The blade is divided into an upper part and a lower part with the horizontal plane where the disc is located; the radial extension line of the blade at the junction of the upper part and the lower part is a curved structure; the curved structure includes an arc, a parabola or an elliptical arc ; The liquid-facing surface of the paddle forms a depression inward, and is swept back along the radial extension line of the paddle. The swept-back disc turbine stirring paddle provided by the invention can reduce stirring power consumption, improve gas-liquid mass transfer performance, and enhance gas-liquid mixing effect, and is widely used in the fields of chemical industry, metallurgy, pharmacy, water treatment and the like.

The invention is an explosion-proof angle seat valve, comprising: a valve body, a muffler, a front cover, a piston rod, a piston, an exhaust pressure regulating joint, a rear cover, a cylinder barrel, a return spring, a guide groove, a limit plate, a spring one, A damping shaft sleeve, an elastic part and a plug; the valve body is also provided with a water discharge damping mechanism. Compared with the prior art, the present invention adopts the hemispherical plug and the dislocation arc-shaped groove to cooperate, and solves the technical problem that the water pressure fluctuates violently when the piston is used to close the pressure plate and the water flow opening is closed in the prior art, causing the valve body to vibrate violently. . At the same time, the water discharge damping mechanism is arranged in the groove, which further prevents the problem of excessive water pressure when the plug closes the groove; and the damping bushing is set between the piston rod and the plug, which can greatly reduce the blocking of water flow. head shock.

The invention relates to the technical field of die-casting molds, and provides a die-casting mold for producing shells and a production method for shells, including: a movable mold assembly, a fixed mold assembly, and a slider mechanism, a movable mold assembly, and a fixed mold assembly The product cavity is formed between the parts and the slider mechanism, and also includes: the runner assembly, the runner assembly has a feed sleeve and a splitter cone arranged on the movable mold assembly, the upper surface of the splitter cone and the lower surface of the fixed mold assembly A feed channel connected with the product cavity is formed between the surfaces, the feed sleeve is connected with the feed channel, the thickness of the feed channel is gradually smaller from the splitter cone to the product cavity, and the feed channel is connected with The junction of the product cavity is in a straight line. Compared with the prior art, the present invention has the advantage that the connection between the feed channel and the product cavity is arranged in a straight line, thereby increasing the feeding speed of the shell and the speed at which the gas is discharged from the product cavity, and preventing the setting on the shell Die-casting defects such as lack of material, air holes, and fluffy structure appear in multiple positioning columns.

The invention belongs to optical cable cabling trough devices for communication network Fiber To The Home (FTTH) optical fiber comprehensive wiring. A ground cabling trough for bow-type optical cables comprises a trough body. Bow-type optical cable troughs are arranged in the trough body, the upper surface of the trough body is in a shape of a circular arc, protruding portions which are in a direction of the center of the circular arc are disposed in the trough body, and the height of the protruding portions are parallel and level to lower bottom surface of the cabling trough. The ground cabling trough coordinates with an inside corner of the cabling trough, the bow-type optical cables are led from a wall surface to a ground surface, the surface is designed in the arc structure, four bow-type optical cable troughs are arranged, the protruding portions are used for improving the strength and rigidity of the cabling trough, a cambered surface is combined with the ground surface, kicking and bumping of the ground cabling trough are avoided when users pass through, and the cabling trough can not be damaged and deformed when treaded, therefore the bow-type optical cables are effectively protected to smoothly pass through the ground surface under the condition of open wire distributing, a plurality of cabling troughs can be connected to the cabling trough through cabling trough joints, and the distance is not limited.

A rotating brush type blueberry harvester mainly comprises an outer framework, an inner framework, a tree height follow-up regulator, a crown diameter follow-up regulator, a hydraulic motor, a rotating brush assembly, a crown guider, a fruit conveyer, and a fruit collector box; in usage, blueberry plants enter the center of the rotating brush assembly through the crown guider; the hydraulic motor drives a rotating brush mandrel to rotate; elastic brush teeth on the rotating brush mandrel brush the blueberry plants, so the mature blueberry fruit can fall on a conveyer belt of the fruit conveyer, and sent to the fruit connector box, thus realizing fruit contentious and automatic harvesting; the harvester uses the brush mode to contentiously harvest the blueberry, is high in harvesting efficiency, and small in mechanical damage on the fruits; the work parameters of the tree height follow-up regulator and the crown diameter follow-up regulator can be adjusted, so the harvester can suit for blueberry plants of different heights and crown diameters of various kinds; the harvest can also harvest other small berries, and is wide in application scope.