118results about How to "Increase radial size" patented technology

The drive mechanism comprises the drive mechanism bracket, the driving chain, the system for measuring the position of the rod and the magnetic damper. The driving chain consists of the motor, the gear reduction mechanism and the chain wheel. The magnetic champer comprises the moving disc, the upper and lower magnetic discs and the bearing seat. Since playing the damping function only without the driving function as well as the adjustable structure, the magnetic damper provides the features of shorter driving chain, smooth reliable driving and large enough brake moment. Said mechanism reduces the influence of the precision of manufacturing and assembling the control rod driving mechanism on the rod drop as well as eliminates the 'scraping' between the moving disc and the magnetic disc.

The invention discloses an aviation centrifugal pump blade profile optimization design method. Under a Matlab platform, a five-point four-time bezier curve and a linear function are adopted to controlthe blade profile circumference angle distribution and the product superposition change rule, and internal flow field numerical simulation is carried out on 15 sets of design results through a software UG and Fluent combined batch processing method. On the basis of obtaining a calculation space boundary condition through curved surface interpolation, numerical solution is carried out on the dual-harmonic partial differential equation by adopting a central difference format, and a hypercurved surface performance agent model is sestaboished. Global optimization is carried out on the design variable based on an artificial fish swarm algorithm by taking the highest efficiency as an objective function. The result shows that the hypersurface agent model based on the double harmonic equation canensure that the test value and the predicted value are completely consistent, the wake effect in the optimized centrifugal impeller flow is obviously weakened, and the hydraulic efficiency is improved by 5.4% compared with that of a prototype pump.

The invention provides an integrated semi-direct drive wind generator transmission chain and a gearbox for the same. The gearbox comprises a front box body (6), a rear box body (14), a spindle (5) and a planetary carrier (10), a large-diameter portion (5-3) of a downwind end of the spindle is fixedly connected with an inner gear ring (7), the inner gear ring (7) is engaged with at least three idle gears (8) mounted on the planetary carrier (10), the inner gear ring (7), the idle gears (8) and a first planetary gear form a primary fixed shaft transmission pair, a portion of each planetary gear shaft (13) extending out of the planetary carrier (10) is connected with a secondary planetary gear (15), the secondary planetary gear (15) is positioned in a cavity formed by the planetary carrier (10) and the rear box body (14) and engaged with the same sun gear (17), and the secondary planetary gear (15) and the sun gear (17) form a secondary fixed shaft transmission pair. The gearbox has the advantages of integration, light weight, short axial length, convenience in disassembly and assembly and the like.

The invention relates to a cylindrical cuspend magnetic field thruster, and relates to a cuspend magnetic field thruster, which aims at solving the problem of overlong thruster ceramic passage caused by the smaller radial size of the existing ionizing area. An air guide device is arranged on a working medium spraying hole, a conducting bolt is arranged in the other working medium spraying hole in a penetrating way, two ceramic gaskets sleeve the conductive bolt and are fixed by a nut, an annular anode is fixedly arranged in the middle part of the inside wall of a cylindrical ceramic channel body, an air distributor is arranged in the cylindrical ceramic channel body, a second aluminum alloy end cover, a magnet, a plurality of second magnetic pieces, a first magnetic piece, a coil, a magnetic piece base, a first aluminum alloy bracket and a bracket plate sequentially sleeve the outside wall of the cylindrical ceramic channel body from right to left, the magnet bracket sleeves the magnet, the coil bracket sleeves the coil, the outer aluminum alloy sleeve sleeves the first magnetic piece, the second magnetic pieces and the magnet bracket, and the aluminum alloy bracket sleeves the outer wall of the cylindrical ceramic channel body. The cylindrical cuspend magnetic field thruster is applied to the field of aerospace.

The present invention relates to an occluder (100), comprising a meshed occlusion body (I) provided with a cavity (103), and a proximal hub (2), as well as a locking member (10) and a stopping member (13) both of which are located in the cavity (103). The distal end of the locking member (10) is connected to the distal end of the occlusion body (1). The stopping member (13) is disposed at the proximal end of the locking member (10). The proximal occluder head (2) is provided with a locking hole (15) in communication with the cavity (103). The radial size of the stopping member (13) is slightly larger than the diameter of the locking hole (15). The radial size of the locking member (10) is smaller than the diameter of the locking hole (15), and at least one of the proximal occluder head (2) and the stopping member (13) is an elastic member. An occlusion device comprises the occluder (100), a hollow delivery mechanism (200) and a traction member (4). The distal end of the traction member (4) is detachably connected to the proximal end of the locking member (10) of the occluder (100) after extending through the distal end of the delivery mechanism (200). The occlusion device has a simple locking structure, and simplifies the manufacturing process and the locking operation.

This kit (11) comprises a tubular endoprosthesis (19) having an inner surface (57) which delimits a channel (58) with a longitudinal axis (Y-Y′). It comprises a prosthetic valve (17) to be implanted in the channel (58). The valve (17) comprises a supporting framework (25) having an outer surface (31) to be applied against the inner surface (57), and a flexible obturator (27) which is connected to the framework (25).

The endoprosthesis (19) comprises a stop (63, 65) for locking the supporting framework (25) in order to block the axial displacement of the outer surface (31) along the inner surface (57) in at least a first direction. The stop (63, 65) comprises at least one flexible connection (69) extending transversely in the channel (58) between two connection points (71), which are located on the inner surface (57) and are angularly spaced about the axis (Y-Y′).

The invention discloses an automatic expansion focusing electrode and an automatic expansion focusing electrode-based photomultiplier. The photomultiplier comprises a high-vacuum seal shell, the automatic expansion focusing electrode, a high-quantum efficiency photocathode, an electronic multiplier system and a connection and lead system, wherein the high-vacuum seal shell has main functions of sealing and being used as a substrate for other films as a photomultiplier housing part; and the automatic expansion focusing electrode comprises a bottom plate, expansion blades and an automatic trigger mechanism as an electronic collector of the photomultiplier. The high-quantum efficiency photocathode is located in an upper area of the high-vacuum seal shell and converts incident photons into electrons. The electronic multiplier system is located at the lower part of the automatic expansion focusing electrode, amplifies the electrons collected by the focusing electrode and then leads out the electrons through the lead system. The automatic expansion focusing electrode touches the trigger mechanism in a photomultiplier packaging process, so that an expansion action of the automatic expansion focusing electrode is achieved and expansion of the radial size of the focusing electrode is achieved.

The invention relates to the technical field of transport lifting slings, and particularly provides a lifting and transporting tool for a crucible. The lifting and transporting tool for the crucible comprises a suspender which is vertically arranged. The suspender is sleeved with a connecting sleeve capable of moving up and down, and the connecting sleeve is hinged to external support rods for supporting the inner wall of the crucible. The external support rods are provided with supporting members for supporting the inner wall of the crucible, and the three or more external support rods are arranged. A hinge seat is fixedly arranged at the bottom of the suspender, and inner support rods which are hinged to the external support rods and are used for supporting the external support rods arearranged between the hinge seat and the external support rods. In the process of the movement of the external support rods and the inner support rods, the lifting and transporting tool for the crucible has the movement state of the external support rods facing down and the inner support rods facing up. Technicians can only move the connecting sleeve on the suspender to drive the movement of the external support rods and the inner support rods, and the extension or contraction of the external support rods are achieved, and the operation is simple.

The invention discloses a special segmented boring bar with double guide support and used for boring machining for inner annular grooves of deep holes. The boring bar comprises a guide part, a cutter bit part, a cutter advancing-retreating control part, an axial location part, an auxiliary support part and a bar body part, wherein a guide head is connected with the front end of a sleeve by virtue of dowels, the auxiliary support part is connected with the sleeve by virtue of spherical screws, and due to the combination of the guide head and auxiliary support blocks, the partial static rigidity of the cutter bit can be greatly improved; a front baffle is connected with the front end of the guide head by virtue of a screw, and a rear baffle is connected with the rear end of the sleeve by virtue of a screw; and three uniformly-arranged blades are arranged in the peripheral direction of the cutter bit part, and capable of counteracting a radial force and a tangential force during cutting, and further improving the rigidity of the cutter bar. The special segmented boring bar with double guide support, which is disclosed by the invention, is applicable to boring machining for inner annular grooves of deep holes with large length-diameter ratios and multilayer deep holes; and compared with a boring bar in the prior art, the machining range is wider, and the machining surface quality and machining accuracy are remarkably improved.

The invention discloses a natural cooling permanent magnet motor comprising a stator and a rotor. The stator comprises a hollow machine base and a stator core. A plurality of grooves are formed in theouter circumference of a stator punching sheet, and cooling fins are disposed in the grooves. The stator core is internally provided with a plurality of stator slots. Stator windings are disposed inthe slots. The rotor includes a rotor body and a rotor fan. The rotor body includes a rotor hollow shaft and a rotor support. One end of the rotor hollow shaft is provided with an air inlet, the otherend of the rotor hollow shaft is provided with an air outlet, and the air inlet and the air outlet are communicated with a cavity of the rotor support. The rotor support is in a tubular body. The rotor hollow shaft is in series connection with the cavity of the rotor support to form a cooling air flowing channel. Wind pressure is generated by rotation of blades of the rotor fan in the rotor support, so that external environment cooling air is sucked in through the air inlet in the axial direction of a rotating shaft, the air flows through the rotor hollow shaft and the inner surface of the rotor support, and flows out from the air outlet of the rotating shaft to cool the magnetic steel.

A hydraulic cylinder includes: a cylinder tube; a piston; a piston rod; a pair of end covers; and a snubbing mechanism configured to reduce the moving speed of the piston after the piston reaches the vicinity of the end of its stroke. The snubbing mechanism includes: a supply/discharge port formed in an associated one of the end covers; a valve configured to open and close the supply/discharge port; a connector configured to connect the valve and the piston together; and at least one recess extending from the edge of the supply/discharge port. When the piston approaches the end of its stroke, the valve closes the supply/discharge port to form a throttle oil passage, and hydraulic oil is discharged through the throttle oil passage to reduce the moving speed of the piston.

The invention provides an epicycle reduction gear which improves degree of design freedom around a main bearing of a wheel carrier, meanwhile, needs not to reduce the intensity around the main bearing and further shorten the size of radius of the epicycle reduction gear. The provided epicycle reduction gear which takes relative rotation component of external gears (51-53) and a internal gear (56) as output is provided with a pair of first and second wheel carriers (62, 64) which are arranged on both sides on axial direction of the external gears (51-53); an inner pin (pillar part) (60) which penetrates through the external gears (51-53) and connects the first and second wheel carriers (62, 64). The inner pin (60) is provided with a main body part (60B) comprising an embedded end part (60E) which is embedded in and fixed on the second wheel carrier (64) and penetrates the external gears (51-53). The axis circle diameter (ER1) of an axis (O e) of the embedded end part (60E) of the inner pin (60) is smaller than the axis circle diameter (BR2) of an axis (O b) of the main body part.

The invention provides a blood pump. The blood pump comprises a cannula having a blood flow inlet and a blood flow outlet, an impeller disposed within the cannula, and a driving unit for rotating theimpeller; the driving unit comprises a shell, a rotor and a stator, wherein the rotor and the stator are arranged in the shell; the rotor comprises a rotating shaft; and the driving unit is characterized in that the rotor also comprises at least two magnets arranged on the rotating shaft; the stator comprises a first stator body and a second stator body which are arranged around the rotating shaft; the first stator body and the second stator body are arranged in the axial direction in a spaced mode; a rotating magnetic field generated by the first stator body interacts with one of the two magnets so that the rotating shaft can rotate; and a rotating magnetic field generated by the second stator interacts with the other one of the two magnets so as to enable the rotating shaft to rotate. According to the blood pump, on the basis that the overall radial size of the blood pump is reduced, the output power and the load torque of the driving unit of the blood pump can be increased.

The invention relates to a connector and a plug thereof. The plug comprises a plug shell, wherein the front end of plug shell is a plugging end. The plug comprises an elastic claw, wherein the elasticclaw is arranged on the plug shell, the elastic claw is provided with a hooking part, the hooking part is used for being matched with a hooking matching part on a socket shell in a hooking manner soas to lock and fix the plug and the socket which are assembled in a plugging manner, and the elastic claw is provided with a passive unlocking part. The plug further comprises an unlocking piece, wherein the unlocking piece is movably assembled on the plug shell in the front-back direction, the unlocking piece is provided with an active unlocking part, and when the unlocking piece moves in the front-back direction, the active unlocking part and the passive unlocking part are matched in a pushing mode to drive the hooking part to act in the circumferential direction of a connector shell, so that the hooking part is separated from the corresponding hooking matching part, and then unlocking of the plug and the socket is achieved; and at least one of the active unlocking part and the passive unlocking part is of an inclined plane structure. No auxiliary device is needed in the unlocking process, and the unlocking mode is simple.

There is disclosed a high-speed bearing, which includes an inner race and an outer ring. Between the inner race and the outer ring is disposed at least one middle ring. Inside and outside the middle ring is separately disposed a rolling element, so that the speed of the whole bearing has greatly increased. When one set of rolling elements breaks down, the other rolling elements can go on operating.

The invention relates to a rotary insulator and an isolating switch. The rotary insulator comprises an insulator which is a cake-shaped revolving body; connecting pieces are fixedly arranged at both ends of the insulator; one end, facing to the insulator, of each connecting piece is wrapped and fixedly arranged inside the insulator, and one end, extending out of the insulator, of each connecting piece is a transmission end; a transmission hole in which a connecting end corresponding to a rotating shaft is inserted so as to realize torque transmission connection is formed in the end surface of each transmission end; the transmission holes at both ends are arranged coaxially; and the minimum distance between the two connecting pieces inside the insulator is not less than the striking distance of the insulator. The distance between two adjacent phases or between an operating mechanism and a corresponding phase is shortened, so that the structure of the isolating switch is more compact, the boundary dimension of the isolating switch is shortened, the isolating switch can be installed and used in a smaller space, and simultaneously the manufacturing cost of the isolating switch is also reduced.

The invention relates to the technical field of power transmission and transformation engineering, in particular to a GIS busbar and a busbar expansion joint thereof. The busbar expansion joint in theGIS busbar comprises a front flange and a rear flange arranged along the axis of the busbar; a bellows is connected between the front flange and the rear flange; the busbar expansion joint also comprises an elastic component connected between the front flange and the rear flange; the elastic component includes a sleeve fixedly connected to the front flange and a force-transmitting rod fixedly connected to the rear flange; the force-transmitting rod extends into the sleeve, and a coil spring is arranged between the force-transmitting rod portion extending into the sleeve and the rear end of the sleeve; and when the busbar expansion joint is butted against the busbar cylinder and the bellows is not deformed by a force, the sum of the spacings of the adjacent loops of the coil spring is notgreater than the maximum allowable stretch quantity of the bellows. The busbar expansion joint can be used to solve the problem that the expansion joint has a small telescopic deformation range in theprior art, and can also be used to solve the problem that the structure of the busbar cylinder or the expansion joint itself is damaged due to the small deformation range of the expansion joint.

A hub driving assembly comprises a hub, a hub bearing, a motor, a speed reducer, a housing and a flexible connecting piece, wherein the hub bearing is positioned in the hub. The hub bearing comprises an outer ring, an inner ring and a rolling body; the housing encloses a motor chamber and a speed reducer chamber; an output end of the motor extends out of an opening of the motor chamber and is connected with an input end of the speed reducer; the motor, the speed reducer and the housing are all positioned on the internal side of the hub bearing in a radial direction; the outer ring is fixedly connected with the hub, or the hub is also used as the outer ring; the inner ring is fixedly connected with the housing; the flexible connecting piece is positioned on one side of the inner ring in an axial direction of the assembly; and the two ends of the flexible connecting piece in a radial direction of the assembly are fixedly connected with both the output end of the speed reducer and the hub, respectively. According to the technical scheme of the invention, problems that the rigidity of the hub bearing in the traditional hub driving assembly is not enough, hard matters may stop the rotation of the hub and damage the hub when the hard matters on a pavement are clamped into the internal circumferential surface of the hub in the vehicle running process, the speed reducer cannot obtain a large speed reduction ratio, and the speed reducer is prone to generate high noise and wear during the running of the wheel are solved.

Disclosed is a tile sorting and stacking system (1), comprising: a sorting carousel (4) comprising carousel arms (6) with gripping means (18); seatings (7) for receiving the tiles; and an input line (2) and an output line (9) arranged radially or tangentially to the sorting carousel (4). The gripping means (18) are vertically mobile so as to collect a tile from the input line (2) and to release the tile onto a seating (7). Also included are a rotating transfer arm (11); loading means (10) for loading a stack of tiles (8) from a seating (7) onto the transfer arm (11); unloading means (12) for unloading a stack of tiles (8) from the transfer arm (11) onto the output line (9). The transfer arm (11), the loading means (10) and the unloading means (12) are arranged and operating in a region of space (13) delimited superiorly by the carousel arms (6) and delimited laterally by the seatings (7), the input line (2) and the output line (9).

The invention provides a leveling device in semiconductor heat treatment equipment and the semiconductor heat treatment equipment. The leveling device comprises an elastic component, a first connecting part and a second connecting part; the first connecting part is connected with one of a sealing door and a supporting part, and a first accommodating groove is formed in the first connecting part; the second connecting part is connected with the other one of the sealing door and the supporting part; a second accommodating groove opposite to the first accommodating groove is formed in the secondconnecting part; the first connecting part and the second connecting part are connected in a clamped mode and can relatively move in the elastic deformation direction of the elastic component during clamping; and the elastic component is arranged in a containing space defined by the first containing groove and the second containing groove in a matched mode. According to the leveling device in thesemiconductor heat treatment equipment and the semiconductor heat treatment equipment provided, the mounting difficulty of the leveling device can be reduced, the failure probability of the leveling device is reduced, and the use stability of the leveling device is improved, so that the sealing stability of a process door assembly is improved, and the stability of a semiconductor heat treatment process is improved.