39results about How to "Reduce the radial distance" patented technology

A system and method for improving efficiency of zone plates fabricated by conformal layer coatings is disclosed. In embodiments, the inventive conformal layer coating zone plates provide increased zone widths from one times a deposited conformal layer coating thickness up to and including two times the conformal layer coating thickness. By designing a template that increases a mark-to-space ratio of the annular rings of the template, coating sidewalls of the annular rings with an conformal layer coating to form the zones, and then substantially filling annular channels defined by the annular rings with the conformal layer coating to form wider zones, significant efficiency increases can be achieved over conventional conformal layer coating zone plates, especially for innermost zones.

A spot drilling tool includes a drill holder and an insert removably mounted to the holder. The insert is a standardized part configured to support a drill point in a predetermined position forward of the drill holder and centered on the rotational axis of the drill holder. The drill point has two flutes and two substantially conical land surfaces extending between the flutes. The land surfaces have centers of curvature offset from the rotational axis of the insert to provide radial clearance for the trailing portion of the land. A chisel edge at the tip of the drill point is supported by a tapered web defined between the diagonally opposed and offset flutes. Linear cutting edges are formed at the junction of a planar flute surface and the conical land surface. The cutting edges define a narrow included point angle of between 50° and 80°.

The present invention relates to a superhydrophobic sponge body and a preparation method thereof. A purpose of the present invention is to mainly solve the problem of poor hydrophobic effect of the existing adsorption recovery material. The technical scheme of the present invention comprises a superhydrophobic sponge body and a preparation method thereof, wherein the superhydrophobic sponge body comprises a sponge body and a nanometer modifier, the sponge body is a melamine sponge or a polyurethane sponge, and the nanometer modifier preparation method comprises: dissolving a nanometer material in a hydrophobic organosilicon compound agent, and stirring until completely dissolving so as to obtain the nanometer modifier. With the technical scheme of the present invention, the problem in the prior art is well solved. The preparation method of the present invention can be used in the preparation of superhydrophobic sponge bodies.

The present invention relates to a superhydrophobic sponge body material and a preparation method thereof. A purpose of the present invention is to mainly solve the problem of poor hydrophobic effect of the existing adsorption recovery material. The technical scheme of the present invention comprises a superhydrophobic sponge body material and a preparation method thereof, wherein the superhydrophobic sponge body material comprises a sponge body and a nanometer modifier, the sponge body is a melamine sponge or a polyurethane sponge, and the nanometer modifier preparation method comprises: dissolving a nanometer material in a hydrophobic organosilicon compound agent, and stirring until completely dissolving so as to obtain the nanometer modifier. With the technical scheme of the present invention, the problem in the prior art is well solved. The preparation method of the present invention can be used in the preparation of superhydrophobic sponge bodies.

An automatic transmission including a first clutch selectively connecting a first rotary member and a second rotary member disposed coaxially with the first rotary member, a second clutch selectively connecting the first rotary member and a third rotary member disposed coaxially with the first rotary member, a first drum in which a first piston of the first clutch is axially slidably received, a second drum disposed coaxially with the first drum, to accommodate the first drum, and in which a second piston of the second clutch is axially slidably received, an abutting portion abutting contact of the first and second drums with each other in an axial direction of the first and second drums, and a fitting portion at which the first drum is fitted in the second drum and that inhibits relative rotation of the first and second drums about a common axis of the first and second drums.

The present invention relates to a superhydrophobic sponge material and a preparation method thereof. A purpose of the present invention is to mainly solve the problem of poor hydrophobic effect of the existing adsorption recovery material. The technical scheme of the present invention comprises a superhydrophobic sponge material and a preparation method thereof, wherein the superhydrophobic sponge material comprises a sponge material and a nanometer modifier, the sponge material is a melamine sponge or a polyurethane sponge, and the nanometer modifier preparation method comprises: dissolving a nanometer material in a hydrophobic organosilicon compound agent, and stirring until completely dissolving so as to obtain the nanometer modifier. With the technical scheme of the present invention, the problem in the prior art is well solved. The preparation method of the present invention can be used in the preparation of superhydrophobic sponge materials.

A combustor for a gas turbine engine is provided. The combustor includes an annular inner liner; an annular outer liner circumscribing the annular inner liner; and a combustor dome having a first edge coupled to the annular inner liner and a second edge coupled to the annular outer liner, the combustor dome forming a combustion chamber with the annular inner liner and the annular outer liner. The combustion chamber accommodates fluid flow through the annular inner and annular outer liners. The combustion chamber converges in the direction of the air flow to reduce a diameter of the combustion chamber. The combustor dome is configured to bifurcate the air flow at the combustor dome into a first stream directed to the annular inner liner and a second stream directed to the annular outer liner.

The invention discloses a radial clearance adjusting structure of a worm gear and worm. The radial clearance adjusting structure comprises a shell, a worm gear and a worm, wherein the worm gear and the worm are arranged in the shell and are mutually meshed; two ends of the worm are arranged on the shell through a first bearing and a second bearing in a supporting way; the outer part of the first bearing is provided with an adjusting sleeve in a sleeving way; an adjusting zone which is used for enabling the first bearing to move in the radial direction is arranged in the adjusting sleeve; a threaded hole is formed in the shell and is positioned under the adjusting sleeve; an adjusting screw rod is arranged in the threaded rod; one end, which is positioned in the shell, of the adjusting screw rod is provided with a meshing part; the meshing part is a circular truncated cone body; spiral teeth are arranged at the periphery of the meshing part; root diameters of the spiral teeth on the meshing part are gradually increased from one end which is far away from the adjusting screw rod to one end which is close to the adjusting screw rod; the spiral teeth on the meshing part are partially meshed with the worm. According to the radial clearance adjusting structure disclosed by the invention, the adjustment on a clearance between the worm gear and the worm can be realized through the matching of the adjusting screw rod which is arranged under the adjusting sleeve and the meshing part which is arranged at one end of the adjusting screw rod with the adjusting sleeve, and thus the clearance which is not beneficial for the transmission of the worm gear and worm can be removed.

The invention provides an indexing fluted disc grinding and positioning mechanism, and belongs to the technical field of machinery. The problem that an existing indexing fluted disc is low in clamping and positioning efficiency is solved. The indexing fluted disc grinding and positioning mechanism comprises a driving piece and an annular clamp body, the end portion of one end of the clamp body is provided with an annular inner ring portion and an annular outer ring portion located outside the inner ring portion, the inner ring portion and the outer ring portion are coaxially arranged, and a concave annular limiting groove used for allowing the end portion of an indexing fluted disc to stretch into is formed between the inner ring portion and the outer ring portion. The end face of the outer ring part is an annular positioning face, an expansion sleeve is arranged on the inner ring part, and the driving piece can drive the pull rod penetrating through an inner hole of the clamp body to axially move and enable the expansion sleeve to elastically deform outwards. The indexing fluted disc grinding and positioning mechanism has the advantage of being high in positioning effect.

A micro centrifugal pump driven by a U-shaped iron core single-phase permanent magnet synchronous motor, comprises a pump cover having an axial inlet and a radial or tangential outlet, a centrifugal impeller and a U-shaped iron core single-phase permanent magnet synchronous motor coaxially driving the impeller; the impeller has a diameter of 20 to 70mm in ; The motor comprises a permanent magnet rotor which is a cylindrical shape magnetized by two radial poles and has a diameter of 10-40mm; a stator comprising a U-shaped laminated iron core and a stator winding through which the iron core passes; The upper part of the U-shaped two arms is formed to abut on the left and right pole boots of the cylindrical surface of the permanent magnet rotor; The ratio (A/C) of the width (A) of the U-shaped outer edge to the diameter (C) of the permanent magnet rotor is not less than 1.75. The design can shorten the radial dimension of the pump, which is advantageous to the installation and use of thepump, and the comprehensive cost of the electromagnetic material is reduced, so that the performance-price ratio is better.

The invention relates to a ratchet wrench with a head capable of being shrunk. The ratchet wrench comprises a body, a driving piece, a ratchet device and a reversing switch, wherein the body comprises the head, a connecting segment connected with one surface of the head, and a handle body arranged at the connecting segment oppositely to one end of the head, and a longitudinal connecting part connected with one surface of the head is formed at one end of the connecting segment; the driving piece is rotatably arranged at the head of the body; the ratchet device can be selectively meshed with the driving piece; and the reversing switch is pivoted with the driving piece and can control the ratchet device, a stirring ring of the reversing switch is tied and exposed outside the first surface of the head of the body and corresponds to the outer surface of the head of the body, and therefore, a user can stir the stirring ring of the reversing switch by the outer surface of the head of the body, thereby effectively reducing the radial distance of the head and achieving the effect of shrinking the head of the body.

The invention provides a braking device, and relates to the technical field of braking. The braking device comprises a base provided with a through hole, a lock ring arranged on the wall of the through hole, and a driving device. A to-be-braked part passes through the through hole, and the lock ring is used for sleeving the to-be-braked part. When the to-be-braked part needs to be braked, becausethe lock ring is provided with a notch, a linear driving device is controlled to push one end part, with the notch, of the lock ring to approach to the other end part, so that the inner diameter of the lock ring is reduced, and the lock ring is tightly attached to the to-be-braked part to limit the to-be-braked part to stop moving or limit the to-be-braked part to move. The braking device can stopand brake the to-be-braked part for a long time, the automation is improved by controlling the driving device, the low-efficiency operation that an operator needs to tighten a brake system one by oneis avoided, and the application range of the braking device is improved.

A bearing position for a torque converter, wherein a pump impeller is connected to a converter neck, and the pump impeller is rotatably mounted on the bearing position by at least one roller bearing in a housing, wherein the roller bearing comprises an outer rolling raceway, assigned to the converter neck and facing radially outwards, and an inner rolling raceway, assigned to the housing and facing radially inwards, and rollers disposed radially between the rolling raceways, wherein the bearing position comprises at least one radially elastically designed section of a sleeve of the roller bearing, where the sleeve is provided with the inner rolling raceway, wherein the section, enclosing an elastic convex raceway curvature, is resiliently prestressed in the radial direction against at least a first roller of the rollers, the first roller supported on the outer rolling raceway, and supported in the opposite radial direction on the housing.

The invention provides a portable screw extrusion juicer which comprises a main machine and an extrusion assembly arranged below a machine base. A motor and a circuit board are arranged in the main machine, the extrusion assembly comprises an extrusion cylinder and a screw, an output shaft of the motor is in transmission connection with the screw, the main machine is provided with a longitudinally-through feeding channel, the main machine comprises a shell and a base, a sealing cavity is defined by the shell, the base and the side wall of the feeding channel, the gravity center of the juicer is arranged on the central axis of the output shaft of the motor in an offset mode and located in the area outside the feeding channel, and therefore the portable juicer with the upper-arranged main machine is more stable in the running process and not prone to shaking or toppling over.

The utility model relates to a pushing and riding integrated child cart and a method for using the pushing and riding integrated child cart, which relates to the technical field of the child cart, inparticular to a pushing and riding integrated child cart and a method for using the pushing and riding integrated child car. Including frame, At that rear end of the frame is installed a rear vehicledrive wheel, The front end of the vehicle frame is provided with two front vehicle steering wheels arranged in parallel, the wheel frame bodies of the two front vehicle steering wheels extend upward to form two handle frames, and two handles are formed on the top end of the handle frame, and a seat is arranged on the front side of the handle frame, the seat comprises a support bar and a seat bodymounted on the support bar, and the support bar is connected and fixed with the handle frame through cylindrical roller bearings; At that other side of the handle and the horizontal direction of the seat body, a connecting rod is arrange, the connecting rod is connected with the rear end of the vehicle frame through an expansion rod, and the connecting rod and the expansion rod are connected through a universal joint, wherein, the rear end of the vehicle frame extend upward out of the vehicle seat fixing rod, and the upper end of the vehicle seat fixing rod is fixed with a vehicle seat. The pushing and riding integrated child cart has the positive effect of multi-purpose and diversified functions of one vehicle.