42results about How to "Optimized load distribution" patented technology

An efficient positive displacement motor under a well comprises a bypass valve assembly, a falling prevention joint, a motor joint, a universal joint assembly and a bearing joint assembly. The efficient positive displacement motor under the well is simple in structure, convenient to use, stable in operation under the well, safe, reliable, high in complete machine efficiency, capable of outputting larger torque, long in working time and service life, suitable for drilling needs of various complex wells at the present, free of piercing leakage and high in working reliability. A streamlined flow channel enables water conservancy losses of a main flow channel to be reduced, turn-off force is large, the defects of the interference effect and tooth form distortion of the conjugation curvature of a traditional single-screw machine type positive displacement motor are overcome, a universal shaft operates flexibly, energy efficiency is high, the universal shaft can work in the environments where no sand grain exists, and drilling fluid erosion exists, the service life is long, and mechanism strength is high.

The invention relates to a pull-out guide (4) for drawers (3a, 3b) comprising a first rail and at least one second rail (6, 7), at least one carriage (8) being arranged between said two rails (6, 7). The carriage comprises a bearing group (9a, 9b) containing load-transmitting elements (10, 10a), preferably rollers, rolling bodies and / or balls. The load-transmitting elements (10, 10a) guide the bearing group (9b) in the vertical direction and in the horizontal direction. At least one additional load-transmitting element (12) is arranged on a bracket (15), at a distance from the bearing group (9b). When the second rail (7) is pulled out, the additional load-transmitting element (12) can at least partially move out over the end of the first rail (6), such that it no longer lies on the first rail (6).

The invention discloses a non-avoiding stereo parking garage rising and falling along rails and provided with extending-retracting supporting systems. The non-avoiding stereo parking garage comprisesthe extending-retracting supporting systems, a three-layer vehicle carrying plate system, a frame and a chain driving system. Chains in the chain driving system are arranged in the frame rails and driven by a speed reducing motor. Rear end stretching shafts in the three-layer vehicle carrying plate system are hinged to the chains and can make rising-falling movement along the rails. The extending-retracting supporting systems can support the front end of the three-layer vehicle carrying plate system, and movement of the extending-retracting supporting systems can cooperate with the movement ofthe chains so as to enable the three-layer vehicle carrying plate system to fall horizontally. A linear movement part and a rotating movement part are arranged in the three-layer vehicle carrying plate system. It is guaranteed that interference in the three-layer vehicle carrying plate system in the falling process is avoided through the linear movement part. Vehicle-carrying rotating of the three-layer vehicle carrying plate system during falling on the ground is achieved through the rotating part. Double-layer non-avoiding parking and picking-up of vehicles can be achieved, parking and picking-up of the vehicles on the layers are not affected by whether other vehicles are parked on the layers or not, and operation of backing the vehicles into the garage is not needed when the vehicles are parked and picked up on the second layer, thus parking and picking-up are convenient, complete-machine movement is stable and efficient, and safety is high.

The invention relates to a dual clutch transmission. The dual clutch transmission has a reverse gear driven by a reverse driving gearwheel via an intermediate idler wheel freely rotatably mounted on an intermediate lay shaft, which avoids the need for a long intermediate lay shaft. The driving gearwheel, the intermediate idler wheel and the reverse driving gearwheel are aranged on the same plane. The transmission has a driving gearwheel and a driven gearwheel for first gear disposed on their respective input and output shafts at or near a centre of the transmission near a region on the output shaft where shaft bending is high. This is intended to minimise misalignment between gear meshes of the driving gearwheel and the driven gearwheel for first gear caused by flexure in the wheels, thereby reducing wear and noise as the gear meshes more efficiently enqage with each other. The low speed, high loaded gears (Gl / RG, G2; Gl, G2 / RG) are disposed so that they alternate with the higher speed, lower loaded gears (G6 / G4, G5 / G3), thereby distributing load evenly along the shaft and reducing a likelihood of shaft fatigue.

The invention discloses a discontinuous cross-section column transferring joint and a construction method thereof. The discontinuous cross-section column transferring joint comprises a joint body which is of a column structure with hollow inside, a cross steel column connected into a column structure of the joint body, an upper end circular cross-section column transition plate connected to the upper end of the joint body, an upper end circular cross-section column connected to the upper part of the upper end circular cross-section column transition plate, a stiffening rib plate I connected between the upper end circular cross-section column and the upper end circular cross-section column transition plate, a lower end square cross-section column transition plate connected to the lower endof the joint body, a lower end square cross-section column connected to the lower part of lower end square cross-section column transition plate, and a stiffening rib plate II connected between the lower end square cross-section column and the lower end square cross-section column transition plate, wherein the outer edge of the cross steel column is connected with the inner wall of the column structure. The discontinuous cross-section column transferring joint has good cross section transition, and the occurrence of stress concentration phenomenon and the generation of anti-seismic weak partscaused by the transition of discontinuous joint steel columns only by single-layer steel plates are avoided.

The invention relates to the technique of prevention of geological hazards, in particular to a debris flow prevention technique. The invention discloses a debris flow multi-stage dissipative blockingstructure, thus damage action of a debris flow can be lowered, and the disaster loss is relieved. According to the debris flow multi-stage dissipative blocking structure, from flowing area of the debris flow to the accumulation area, the debris flow multi-stage dissipative blocking structure is arranged in a step-by-step mode along debris flow channels from the upstream to downstream, and at leastincludes a flexible blocking net, a pile-carrying-type grid wall and a permeable buttress-type gravity dam. According to the debris flow multi-stage dissipative blocking structure, according to different geological conditions, types of the debris flows and the like, the matching structure of the flexible blocking net 2, the pile-carrying-type grid wall 3 and the permeable buttress-type gravity bam is reasonably selected, benefits of the investment in engineering construction can be given full play to the maximum extent, and cost benefit optimization is achieved. The debris flow multi-stage dissipative blocking system is very suitable for prevention of the debris flow disasters.

The invention discloses a flexible blocking net, relates to a protective structure, and provides a flexible blocking net capable of optimizing load distribution and reducing local load concentrating. The flexible blocking net comprises two end supporting columns, a middle supporting column located between the two end supporting columns, a top supporting rope and a metal flexible net body, wherein the top supporting rope and the metal flexible net body are transversely unfolded to be arranged between the two end supporting columns. The top supporting rope is supported by the end supporting columns and the middle supporting column, and a supporting joint is arranged at the portion where the top supporting rope and the middle supporting column intersect with each other. The metal flexible net body comprises a plurality of net holes formed in rows, the row of net holes located at the edge of the metal flexible net body are edge net holes, and the several rows of net holes close to the edge net holes are edge-adjacent net holes. The edge net holes are connected with the top supporting rope in a slideable mode. The edge-adjacent net holes close to the supporting joint are connected with the top supporting rope in a slideable mode through the additional connecting structure. The flexible blocking net can be used for blocking movement objects and particularly can be used for blocking tumbling stone, sliding rock and earth masses, mud-rock flow, snow slide and blasting flying rock.

The invention discloses a vacuum pouring assisting device and a vacuum pouring technology. The vacuum pouring assisting device comprises a flexible body capable of covering a material pavement area ona die, and a fixing device fixed to the whole edge of the die. The whole peripheral edge of the flexible body can be closed to the fixing device, and accordingly the material pavement area can be sealed. A plurality of cavities can be formed in the flexible body and can be filled with fluid media. By means of the provided vacuum pouring assisting device and the provided vacuum pouring technology,the pouring speed and the resin seepage speed during vacuum resin pouring can be obviously improved, the pouring time is shortened, and it can be ensured that the content of fiber at various positions after resin curing is consistent.

The invention belongs to the field of dental implants and in particular relates to a dental implant. The dental implant is cylindrical, and comprises a neck and a body, wherein a micro thread is formed in the periphery of the neck upwards; an external thread is formed in the periphery of the body upwards; a cavity convenient for locking is formed inside the dental implant; and a cross lock is arranged in the cavity. The dental implant disclosed by the invention can form good synosteosis with bone tissues.

This invention relates to double rolling bear oil extraction bar correction device, which comprises corrector bar with screw on ends, composite correction cover, rolling bar, limit ring and fix ring. The invention is characterized by the following: setting two correction cover with each one composed of two correction blocks and four or six hard nanometer ceramics rolling sphere part as hole tank of protruding part with anti-ware and anti-erosion property; the rolling sphere part is in order of four or six edges.

The invention discloses a bearing structure for an axle. The bearing structure comprises rollers, an inner ring, a check ring, a spring retainer ring, a paper container, a planet gear and a sun wheel, wherein the rollers are symmetrically arranged on the outer surface of the inner ring, and are matched and connected with the inner ring; the spring retainer ring is arranged in the middle of the check ring, two ends of the spring retainer ring are tightly connected with the paper container and the inner ring; the check ring is arranged between the spring retainer ring and the rollers, the check ring is adhered with the side walls of the rollers; the outer side surface of the paper container is tightly connected with the planet gear; the outer surface of the planet gear is tightly connected with the interior of the sun wheel. The bearing structure is simple and is strong in bearing capability, an optimized design of the bearing is realized, compared with a common mechanical bearing mechanism which is designed by experiment, the bearing capability of the bearing structure disclosed by the invention is increased by 9.6 percent, so that the deflection error is favorably reduced, the contact stress of the rollers and the inner ring is relatively uniformly distributed; the bearing structure is compact in structure, stable to run, long in service life, light in weight and suitable for being popularized and used.

The invention discloses a flexible blocking net, relates to a protection structure and provides a flexible blocking net capable of optimizing load distribution and reducing local concentrated load. The flexible blocking net comprises at least two support columns and a support rope and a metal flexible net which are arranged between the support columns in a transverse spreading mode. The support rope is connected with the metal flexible net, at least one end of the support columns in the length direction is connected with a support body capable of rotating freely, and the support body enables the support rope to be tensioned. Further, the flexible blocking net can comprise connection clamping rings variable in shape or easy to break, the metal flexible net comprises meshes, at least one mesh located on a top row or a bottom row of the metal flexible net is connected with the support rope through the connection clamping rings to form a buffer area with a buffer function. The flexible blocking net can be used for blocking moving objects such as tumbling stones, sliding rock and earth mass, debris flow, snow slide and flying stones.

Planet carrier (18) of an epicyclic gear system (20) with planetary shafts (8) which are connected fixedly to the planet carrier onto which planet wheels (6) are mounted rotatably using planetary bearings, the teeth of the planetary wheels being helical or chevron teeth, the said planet carrier being of a cage type, and where at least two separate planetary wheels are placed on each planetary shaft, each wheel of which being supported by at least one double-row cylindrical bearing, where the outer bearing ring of each double-row cylindrical bearing is integrated into the planetary wheel concerned.

The invention discloses a bearing for a large axle load axle box. The bearing comprises a first bearing assembly and a second bearing assembly, wherein the first bearing assembly is composed of a first inner ring, a first bearing outer ring, a first retainer and a first row of rolling bodies, the second bearing assembly is composed of a second bearing inner ring, a second bearing outer ring, a second retainer, a second row of rolling bodies and a flat blocking ring, and the first bearing assembly and the second bearing assembly are completely assembled in a counterpoint mode through the auxiliary assembling between an inner sleeve and an outer sleeve. The process of the first bearing inner ring and the process of the second bearing inner ring are improved, so that the baring is compact in whole structure. Furthermore, the flat blocking ring and the second bearing inner ring are assembled to enable the bearing to be convenient to dismount.

Planet carrier (18) of an epicyclic gear system (20) with planetary- shafts (8) which are connected fixedly to the planet carrier, onto which planet wheels (6) are. mounted rotatably using planetary bearings, the teeth of the planetary wheels being helical or chevron teeth, the said planet carrier being of the cage type, and where at least two separate planetary- wheels are mounted on each planetary shaft, each wheel of which being supported by at least one double-row tapered roller bearing, the outermost bearing ring of each double- row tapered roller bearing being integrated into the planetary wheel concerned.

The present invention relates to systems for maximizing the cage size in lift plants by a traction machine each provided with two traction pulleys equal in size to the half of a common pulley, on which the suspension pulleys are wrapped divided into two groups, each of them developing a suspension size ratio equal to 1:2 or greater, either for the cage or the counterweight.

The invention discloses a telescopic type composite material telegraph pole connecting structure. The telescopic type composite material telegraph pole connecting structure comprises a plurality of telegraph poles, all the telegraph poles are of hollow structures, all the telegraph poles are sequentially connected in a sleeved mode, the outer side wall diameter and the inner side wall diameter of any two adjacent telegraph poles are matched, and all the telegraph poles are made of composite materials. According to the telescopic type composite material telegraph pole connecting structure, by adopting a sectional type telegraph pole telescopic sleeving structure, the telescopic type composite material telegraph pole connecting structure has the advantages that the telegraph poles are convenient to transport, and meanwhile, the consumption of manpower and material resources is reduced when the telegraph poles are mounted.

The invention relates to a grinding roller having an inclined, fixed inner roller axle (3), a roller jacket (6) being provided on a roller base body (7) . The rotatable roller base body (7) is mounted relatively to the fixed inner roller axle (3) by means of an arranged fixed bearing (11) and a floating bearing (12) which is spaced apart therefrom. The floating bearing (12) is provided in the region of the end face of the roller axle (3) and for supporting the roller base body (7) having the roller jacket (6) so as to allow their rotation, and the fixed bearing (11) is arranged on the roller axle (3) in an outwardly offset manner in the direction of the swing lever (14).

The invention discloses a flexible blocking net, relates to a protective structure, and provides a flexible blocking net capable of optimizing load distribution and reducing local load concentrating. The flexible blocking net comprises two end supporting columns, a middle supporting column located between the two end supporting columns, a top supporting rope and a metal flexible net body, wherein the top supporting rope and the metal flexible net body are transversely unfolded to be arranged between the two end supporting columns. The top supporting rope is supported by the end supporting columns and the middle supporting column, and a supporting joint is arranged at the portion where the top supporting rope and the middle supporting column intersect with each other. The metal flexible net body comprises a plurality of net holes formed in rows, the row of net holes located at the edge of the metal flexible net body are edge net holes, and the several rows of net holes close to the edge net holes are edge-adjacent net holes. The edge net holes are connected with the top supporting rope in a slideable mode. The edge-adjacent net holes close to the supporting joint are connected with the top supporting rope in a slideable mode through the additional connecting structure. The flexible blocking net can be used for blocking movement objects and particularly can be used for blocking tumbling stone, sliding rock and earth masses, mud-rock flow, snow slide and blasting flying rock.

The invention discloses a vacuum perfusion assisting device and a vacuum perfusion process. The vacuum perfusion assisting device comprises a flexible main body which can cover a material paving region on a mold, wherein the peripheral edge of the flexible main body is fixed to the mold; a plurality of cavities are formed in the flexible main body; the plurality of cavities can be filled with a fluid medium. Through the vacuum perfusion assisting device and the vacuum perfusion process provided by the invention, the perfusion speed and resin permeation speed during vacuum perfusion of resin can be increased remarkably, the perfusion time is shortened, and the fiber content at different positions after resin curing can be kept consistent.

The closed type medium-flow high-pressure three-dimensional flow impeller comprises a front disc, three-dimensional flow blades, a flow guide conical disc, a rear disc, a shaft disc and a main shaft, the main shaft is coaxially sleeved with the shaft disc, the main shaft is coaxially sleeved with the rear disc, the main shaft is coaxially sleeved with the flow guide conical disc, and the three-dimensional flow blades are arranged on the front disc. The three-dimensional flow blades are distributed on the side wall of the rear disc in an array mode around the circumference of the main shaft, the front disc is fixedly connected to the sides, away from the rear disc, of the three-dimensional flow blades, a front disc inlet is formed in the center of the front disc, and the front disc sequentially comprises a linear section, an outer arc section and an inner arc section from outside to inside. The invention belongs to the technical field of manufacturing of pulverization and coal discharge fans, and particularly provides a method for designing by applying a quasi-ternary theory. The closed type medium-flow high-pressure three-dimensional flow impeller for the pulverization and coal discharge fan of the iron mill effectively solves the problems that fans commonly used by coal discharge systems of the iron mill are high in operation energy consumption, large in noise and the like.

An angular contact ball bearing is specified comprising the following features: an outer rolling element comprising a first rolling surface; an inner rolling element comprising a second rolling surface; between these two rolling elements only one row of balls is arranged Rolling on the first rolling surface and the second rolling surface; the diameter D of the ball w , the outer diameter D of the outer rolling element and the inner diameter d of the inner rolling element are selected such that they have the following relationship to each other:

The invention discloses an automatic detection machine for an SMT printing steel mesh. The detection machine comprises a Y-direction translation mechanism, a steel mesh supporting and pressing mechanism, an X-direction translation mechanism, and a detection mechanism. The X-direction translation mechanism and the Y-direction translation mechanism are in an X axis direction and a Y axis direction, wherein the two directions are perpendicular to each other on a horizontal plane. The Y-direction translation mechanism consists of a shock-absorbing seat, a pedestal, a Y-direction guide rail and a sliding block, a Y-direction sliding table, a bar-shaped light source, a Y-direction grating ruler and a Y-direction lead screw and a nut. The steel mesh supporting and pressing mechanism includes a movable support, a fixed support, a steel mesh support plate, a Y-direction limiting block, a compression cylinder, a steel mesh adjustment guide rail and a slide block thereof. And the X-direction translation mechanism is composed of two X-direction guide rail mounting seats, two X-direction guide rails and a slide block thereof, an X-direction lead screw and a nut, and an X-direction grating ruler. The detection mechanism includes a camera connection plate, a camera, a tensiometer connecting plate, a tensiometer, and a tensiometer lifting regulation element. The detection machine has advantages of high detection precision and wide application range.

The invention discloses a vacuum pouring assisting device and a vacuum pouring technology. The vacuum pouring assisting device comprises a flexible body capable of covering a material pavement area ona die, and a fixing device fixed to the whole edge of the die. The whole peripheral edge of the flexible body can be closed to the fixing device, and accordingly the material pavement area can be sealed. A plurality of cavities can be formed in the flexible body and can be filled with fluid media. By means of the provided vacuum pouring assisting device and the provided vacuum pouring technology,the pouring speed and the resin seepage speed during vacuum resin pouring can be obviously improved, the pouring time is shortened, and it can be ensured that the content of fiber at various positions after resin curing is consistent.

The invention discloses a flexible blocking net, relates to a protection structure and provides a flexible blocking net capable of optimizing load distribution and reducing local concentrated load. The flexible blocking net comprises at least two support columns and a support rope and a metal flexible net which are arranged between the support columns in a transverse spreading mode. The support rope is connected with the metal flexible net, at least one end of the support columns in the length direction is connected with a support body capable of rotating freely, and the support body enables the support rope to be tensioned. Further, the flexible blocking net can comprise connection clamping rings variable in shape or easy to break, the metal flexible net comprises meshes, at least one mesh located on a top row or a bottom row of the metal flexible net is connected with the support rope through the connection clamping rings to form a buffer area with a buffer function. The flexible blocking net can be used for blocking moving objects such as tumbling stones, sliding rock and earth mass, debris flow, snow slide and flying stones.

An efficient positive displacement motor under a well comprises a bypass valve assembly, a falling prevention joint, a motor joint, a universal joint assembly and a bearing joint assembly. The efficient positive displacement motor under the well is simple in structure, convenient to use, stable in operation under the well, safe, reliable, high in complete machine efficiency, capable of outputting larger torque, long in working time and service life, suitable for drilling needs of various complex wells at the present, free of piercing leakage and high in working reliability. A streamlined flow channel enables water conservancy losses of a main flow channel to be reduced, turn-off force is large, the defects of the interference effect and tooth form distortion of the conjugation curvature of a traditional single-screw machine type positive displacement motor are overcome, a universal shaft operates flexibly, energy efficiency is high, the universal shaft can work in the environments where no sand grain exists, and drilling fluid erosion exists, the service life is long, and mechanism strength is high.

A rotor pivoting system (1) for setting a rotor (2) upright, for the purpose of maintenance and / or repair work: a turning pedestal (9) having a pivoting device (10), and at least one bearing pedestal (11) for supporting the rotor when not upright; a heavy-duty stand (3) with a multiplicity of vertically extendable supporting feet (4, 5) which receive the turning pedestal and the bearing pedestal and is transportable and introduces forces occurring when a rotor arranged on the turning pedestal (9) and the bearing pedestal (11) is being set upright, via the supporting feet (4, 5), into a base on which said stand is positioned. Also, a method for carrying out maintenance and / or repair work on a rotor (2) of a machine using a rotor pivoting system (1) according to the invention.

The invention relates to a second-generation tapered roller bearing of the speed reducer industry. The second-generation tapered roller bearing comprises an inner ring, an outer ring, rollers and a retainer; through the retainer, the rollers are arranged in a pocket hole of the retainer; and the rollers and the inner ring which are connected with each other are packed into double rows of raceways of the outer ring. Compared with the prior art, the second-generation tapered roller bearing provided by the invention has the advantages of compact structure, convenience for assembling, good lubrication effect and long service life.