33results about How to "Increased dynamic load" patented technology

Voltage regulating systems are provided that adjust their output control signals in response to feed-forward information that is indicative of deterministic changes in the load current. A feed-forward circuit provides a feed-forward signal in response to an input signal generated from a source that is external to the voltage regulating system. The voltage regulator systems can proactively respond to the predictive information by adjusting their output, thereby improving the regulation tolerance to dynamic loading. As an example, the feed-forward information can include signals indicating multiple deterministic events that affect the load. Signals from multiple events can be summed together to generate a feed-forward term. As another example, the voltage regulating systems can be responsive to feedback information and feed-forward information from internal to the regulator, in addition to external deterministic information.

The invention provides a glass production line and belongs to the technical field of machinery. The production line solves the problem of low glass production efficiency in the prior art. The glass production line comprises a base and a rack arranged on the base, wherein an inlet is formed in one end of the rack; an outlet is formed in the other end of the rack; a conveying mechanism for conveying glass is arranged between the inlet and the outlet; a longitudinal cutting mechanism capable of performing longitudinal cutting on the glass is arranged on the rack; a transverse cutting mechanism capable of performing transverse cutting on the glass is arranged at the rear of the longitudinal cutting mechanism; an edge clearing mechanism capable of clearing the edge of the glass is arranged at the rear of the transverse cutting mechanism; a detection mechanism capable of detecting a glass defect is arranged at the rear of the edge clearing mechanism; a batch-out mechanism capable of removing defective products is arranged at the rear of the detection mechanism; and a slicing mechanism capable of slicing the glass is arranged at the rear of the batch-out mechanism. The production line has the advantages of improving glass production efficiency.

The present invention reduces loads and saves steel on topsides and grillage of a catamaran system by creating a lifting force from a barge to the topsides to offset a sagging bending moment of the self-weight on the topsides during transportation. The present invention can reduce the span of the supports on the topsides on the catamaran float-over barges and move the reaction forces toward inner edges of the float-over barges. The lifting force can cause a reduction of stress on the topsides' and grillage's members caused during the topside offloading and transportation. The stress reduction can result in the members withstanding the additional dynamic load caused by a catamaran system without increasing member sizes adequate for an offloading operation. The reduction results in a significant savings, given the size of a typical topsides for a Spar hull or other offshore structure.

The invention discloses a load shedding design method for an intershaft bearing of an aeroengine, and provides a principle of avoiding a synchronous impact on the intershaft bearing. According to the method, selecting N revolving speed points in an operating range of the aeroengine from a slow speed of a vehicle to a maximal speed, and determining inner ring characteristic frequencies multiplication and outer ring characteristic frequencies multiplication of the intershaft bearing under each revolving speed; marking blade number of a fan; determining whether distances of the blade number of the fans and an integer multiple thereof to the inner ring characteristic frequencies multiplication and to the outer ring characteristic frequencies multiplication are smaller than 2%; and If the revolving speed section that meets the condition is greater than 10% of an engine working revolving speed range, then adjusting the blade number or a rotation speed ratio of a high/low pressure rotor to 90% of the engine working revolving speed range, wherein the distance of the blade number of the fans and an integer multiple thereof to the inner ring characteristic frequencies multiplication and to the outer ring characteristic frequencies multiplication of the intershaft bearing are greater than 2%. The method of the present invention effectively avoids the occurrence of a synchronous impact on the intershaft bearing.

The invention discloses an autoclaved aerated concrete block, and belongs to the technical field of building materials. The problem of instable bubbles generated by existing aerated concrete during foaming is solved. The autoclaved aerated concrete block includes the following components of: in parts by weight, 80-120 parts of cement, 150-200 parts of lime, 500-800 parts of modified fly ash, 5-10parts of aluminum paste, 100-200 parts of water and 0.5-1.5 parts of a modified foam stabilizer. The autoclaved aerated concrete block has a good foaming effect, so that concrete is filled with denseair bubbles, and the autoclaved aerated concrete block has good thermal insulation performance, so that improvement of the quality and qualification rate of the product is facilitated.

The invention relates to a four-row cylindrical roller bearing for a rolling mill. Two freely rotatable rollers are clamped between two adjacent pillars in a bearing retainer. End faces of the rollers are equipped with inward concave oil storage grooves, and the edges of the pillars are provided with oil-passing grooves. A curved surface fitting the rollers is formed on one pillar side facing the rollers. The curved surface bottom of each pillar is axially provided with lubrication grooves communicated with the oil-passing grooves. A bearing outer ring, a bearing outer ring, the retainer, and the rollers are all made of a steel material. The middle retaining ring in an original bearing outer ring is abolished in the bearing, and is changed into a rolling body bearing area, the rollers are lengthened, the dynamic load of the bearing is enhanced by about 15%, and the service life is effectively improved. The adopted steel retainer has the advantages of light weight, high strength and good lubrication, thus being suitable for an expanded bearing use surface that is at a high rotation speed and does not deform in a high temperature environment.

The invention is a system and method for repairing, improving, and stabilizing subgrade and subsoil/natural ground layers of a rail bed generally consisting of softer soils. One embodiment includes a method of installing subsurface inclusions and ballast fills comprising injected slurry mixtures of stabilizing material such as cement grout mixed with in situ soil. Another embodiment includes a system of installed ground inclusions and ballast fills. Another embodiment includes an integrated system of equipment for emplacing the system of inclusions and ballast fills.

The invention discloses a dual reinforcing ring of a marine large liquefied gas storage tank. The dual reinforcing ring comprises a panel, web plates and reinforcing ribs. The two layers of web platesare arranged, the web plates comprise the bow web plate and the stern web plate, and a reinforcing ring structure is formed by the bow web plate, the stern web plate and the panel. Mounting holes corresponding to the outline of the panel are formed in the bow web plate and the stern web plate. The reinforcing ribs are arranged on the bow web plate, the stern web plate and the panel. Multiple kidney-shaped holes are formed in the part, between the bow web plate and the stern web plate, of the panel. Mounting bed jigs are arranged at the bottom of the outer edge of the bow web plate, and clampsare arranged at the top of the outer edge of the bow web plate. The dual reinforcing ring is reasonable and simple in structure and convenient to use; the yield strength and dynamic loads of the reinforcing ring are greatly improved, the emergence of the ultra-large liquefied gas storage tank becomes real from the paper; and by means of the structural characteristics of the storage tank, the production process is optimized, the number of times of turnover of the structure is effectively reduced, the segmented manufacturing efficiency is greatly improved, and meanwhile consumption of manpowerand resources is reduced from the cost.

The invention relates to a method for producing a nonwoven structure (1) comprising metal wire filaments (2) by carrying out the following steps: a) producing a layer (3) comprising wire filaments (2); establishing first integral joints (4) between at least a part of the metal wire filaments (2) using a first joining method; c) establishing second integral joints (5) between metal wire filaments (2) using a second joining method. The invention also relates to corresponding nonwoven structures and to possible uses thereof, for example in the exhaust gas treatment of motor vehicles.

The invention discloses an affinity chromatography medium based on recombinant protein A as well as a preparation method and application of the affinity chromatography medium. A chimera ZA or ZD is obtained by recombining an A or D structural domain and a mutated Z structural domain of the wild protein A, the mutation of the ZA chimera relative to the Z structural domain comprises Asp 53 Glu and Ala 54 Ser, and the mutation of the ZD chimera relative to the Z structural domain comprises Ala 42 Thr, Leu 44 Val, Ala 46 Gly, Asp 53 Glu and Ala 54 Ser. Alkali resistance is further improved through the mutations without affecting the space structure of the whole structural domain, a His-Tag tag and a flexible connecting arm are added on the basis of the mutants, and the activity freedom degree of a chimera is guaranteed, so that the binding capacity of the chimera with a target molecule is improved; the finally obtained affinity medium can obtain higher dynamic loading capacity and stronger alkali resistance.

The invention discloses a biconical roller lead screw pair with large bearing capacity and high rigidity. The biconical roller lead screw pair is mainly composed of a screw rod, a nut and a rolling body, the rolling body is a biconical roller, the biconical roller is a single-biconical roller or a multi-biconical roller, and the single-biconical roller is a biconical rolling body with the large middle and the two small ends. The rolling body of the biconical roller lead screw pair is the biconical roller, the biconical roller is clamped by a V-shaped groove raceway of the lead screw and a V-shaped groove raceway of the nut, bidirectional four-line contact is formed, and the biconical roller lead screw pair has the characteristics of being large in bearing capacity, high in rigidity, high in impact resistance, good in stability, long in service life, light in weight, small in size, high in efficiency, high in precision and the like. Under the same size, compared with a ball screw, the dynamic load of the biconical roller screw pair is improved by about three times, the static load is improved by about five times, the limit moving speed is improved by about two times, and the biconical roller screw pair can replace an existing ball and roller screw pair.

The invention relates to the field of a supporting pressurization grinding roller combination module for a vertical roller mill. The supporting pressurization grinding roller combination module comprises an upright (1), wherein a grinding roller shaft (11) capable of rotating around the upright is connected to the upper end of the upright (1); a grinding roller (9) is arranged at the end part of the grinding roller shaft (11); and a grinding roller pressurizing device is arranged between the middle part of the grinding roller shaft (11) and the lower part of the upright (1). The supporting pressurization grinding roller combination module for the vertical roller mill is designed modularly so that the roller mill is miniaturized.

The invention discloses a method for controlling the cumulative settlement of a pile-supported subgrade strengthening pile. The method comprises the following steps: calculating a dynamic stress attenuating to the upside of a soil arch height by virtue of a Boussinesq's Equation; calculating according to the dynamic stress, a pile spacing and a share ratio of a load of a pile top to obtain the dynamic load above the pile top; calculating according to the weight of a subgrade filling, an upper load of a subgrade and the share ratio of the load of the pile top to obtain a static load above the pile top; calculating according to an ultimate bearing capacity of a pile tip and the static load above the pile top and the dynamic load above the pile top to obtain a cyclic load ratio and a static load ratio of a single pile above the pile top, namely, a thickness of the subgrade and the bearing capacity of the pile tip accord with a requirement in a case that the cyclic load ratio and the static load ratio of the single pile meet a certain condition so that the control for the cumulative settlement of the pile-supported subgrade strengthening pile is completed.