44results about How to "Improve axial rigidity" patented technology

A device for use within an occluded biological vessel and a method of using same to remove occlusion material from a vessel are provided. The device includes an elongated body configured for delivering projections arranged around a distal portion thereof into the biological vessel. Each of the projections includes a leaf-like structure connected to a stem portion having a higher axial rigidity than the leaf-like structure.

The invention relates to a fan housing for an air-flow heat exchanger having a fan blower comprising an axial-flow fan and a drive motor, the blower being connected to the fan housing by struts and the struts having a cross-sectional profile with a front edge and a rear edge. It is proposed that the struts, particularly their front and/or their rear edges, be arranged in a spherical or spheroidal surface enveloping them.

Disclosed is a high-capacity tire, capable of improving uneven-wearing resistance performance and wet-path ground-gripping performance. A plurality of transverse grooves are arranged at the section from the internal circumference to the land part of the two sides of the tire equator C. The transverse grooves are formed to have an S-shaped structure, composed of external arc groove of tread side having the radius of curvature of R1 and an internal arc groove having the radius of curvature of R2. One side of the external arc groove closer to the circumferential direction of the tire than the transverse groove is provided with an arc center i 1. The other side of internal arc groove closer to the circumferential direction of the tire than the transverse grooves is provided with an arc center i 2. The radius of curvature R2 mentioned above ranges from 10 to 40 mm. Moreover, the radius of curvature R1 is less than radius of curvature R2, with the difference thereof less than 5mm. The central angle alpha of the external arc groove and the central angle beta of the internal arc groove range from45 to 90 degrees.

A hydrodynamic bearing for use in a spindle motor, having a shaft, a bearing sleeve encompassing the shaft with a small radial space, and a skewback at one end face of the bearing sleeve which is fixedly connected to the bearing sleeve. The shaft features a thrust plate or a conical or cone-like extension at its end face which faces the skewback. The diameter of the conical extension increases in the direction of the end face of the shaft. A bearing gap formed between the shaft and the bearing sleeve is filled with a bearing fluid. Dynamic pressure generating grooves are provided on one of the outer surface of the shaft and the inner surface of the bearing sleeve to generate an excess pressure in the bearing fluid.

The invention discloses a motor main shaft. The motor main shaft comprises a waterproof ring, a front cover, an angular contact bearing, a front bearing pedestal, a sleeve, a disc spring, a pull rod,a motor stator, a motor rotor, a core shaft, an encoder mounting plate, an encoder, an oil cylinder sleeve, a piston, an oil cylinder cover, a cutter block, an encoding wheel, a rear cover and a rearbearing pedestal; the motor rotor is integrated with the core shaft, and the motor stator is fixedly connected with the sleeve; the front bearing pedestal and the rear cover are arranged at the two ends of the sleeve; the sleeve is in rotation connection with the core shaft through the front bearing pedestal, the rear bearing pedestal and the angular contact bearing; the front cover is arranged atthe front end of the front bearing pedestal; the oil cylinder sleeve is arranged at the rear end of the rear cover; the piston is arranged in the oil cylinder sleeve; the oil cylinder cover is arranged at the rear end of the oil cylinder sleeve; the piston is located at the rear end of the pull rod, and the cutter block is arranged at the tail end of the pull rod; the encoder mounting plate is installed on the rear cover; the encoder is installed on the encoder mounting plate; the encoding wheel is installed at the tail end of the core shaft; and the pull rod and the disc spring are arrangedin a central hole of the core shaft. According to the motor main shaft, the rotating speed, stability and rigidity of the main shaft are improved, and the space is saved.

A steering column for a motor vehicle may comprise a steering column jacket with a jacket surface having a retaining segment. The retaining segment may at least partially surround a bearing for rotatably mounting a steering spindle about an axis of rotation. The retaining segment may have at least one tab that secures the bearing in the steering column jacket in a direction of the axis of rotation. The tab may be connected to the retaining segment of the steering column jacket along a bending edge. The bending edge may form a projection angle of at maximum 45° with a projected axis of rotation. The free end of the tab is bent around the bending edge towards the axis of rotation.”

The invention provides an illumination module movement device. The device comprises a pedestal, a first stop block, a second stop block, a loading plate, a cylinder and a rotary unit, wherein the first stop block and the second stop block are respectively fixed on the pedestal; the loading plate leans against the first stop block; the rotary unit loads and rotates the loading plate; the cylinder is connected with the rotary unit and drives the rotary unit along a Z direction; and the rotary unit rotates the loading plate to make the loading plate lean against the second stop block when the cylinder drives the rotary unit to a fixed distance along a +Z direction. The illumination module movement device provided by the invention can rapidly lift and rotate an illumination top module and has a high repeated positioning precision.

A turbine stage in a turbomachine comprising ring sectors (20) arranged about a turbine impeller (18), and an annular support (50) supporting the ring sectors and attached to a turbine casing (22), this annular support being able to be deformed elastically in the radial direction to cushion at least a portion of the deformations of the turbine casing in operation.

An electrical machine, preferably a blower drive mechanism for a motor vehicle, having a shaft which is supported in at least two bearings with a specified axial play; a cylindrical bearing is secured in a bearing seat of an end shield and rests directly on the bearing seat. The cylindrical bearing has a cylindrical outer circumference, and the bearing seat is a sleeve with a cylindrical inside diameter, into which sleeve the cylindrical bearing is secured with a press fit on the outer circumference and is held axially in the bearing seat by the thus-attained frictional engagement. This has the advantage that more-precise adjustment of the longitudinal play of the armature is possible. Moreover, no additional components such as retaining springs are necessary.

The invention discloses a duct piece fixing pile device for fixing a shield tunnel duct piece. The duct piece fixing pile device comprises a grouting outer sleeve and a grouting inner sleeve; a connecting part and a step part are arranged at the front end of the grouting outer sleeve, the connecting part is fixedly connected with the step part, a sealing cover is arranged at the rear end of the grouting outer sleeve; a supporting part is arranged at the front end of the grouting inner sleeve, the supporting part is located on the step part, the step part is fixedly connected with the supporting part, a grouting bag is connected to the rear end of the grouting inner sleeve; threads are arranged on the outer parts of the ends, close to the connecting part, of the connecting part and the grouting outer sleeve correspondingly; and the invention further discloses a construction method of the pipe piece fixing pile device, and the construction method comprises the steps of grouting hole opening, grouting liquid stirring, grouting and the like. According to the duct piece fixing pile device for fixing the shield tunnel duct piece, fixing the tunnel duct piece in time can be carried out during shield construction, so that the construction efficiency is effectively improved, and the construction quality is improved.

The invention discloses a linear module with a built-in AC servo motor. The linear module includes a housing, an AC servo motor, a lead screw assembly and a bearing. The AC servo motor includes a motor silicon steel sheet, a motor coil and a rotor assembly. The rotor assembly passes through a through hole in the middle of the motor silicon steel sheet and is installed in the motor silicon steel sheet. The motor coil is wound inside the motor silicon steel sheet. The lead screw assembly includes a lead screw and a ball lead screw nut. The bearing is connected on a sliding seat through a bearingsupport plate, and the bearing is located on both sides of the AC servo motor or the ball lead screw nut. By adopting the ball lead screw nut fixation and nut rotary motion mode, the AC servo motor is installed in the sliding seat. With the movement of the ball lead screw nut, miniaturization and microminiaturization can be achieved, vast space is saved, and multiple motors can be arranged to operate separately without mutual interference. The motor of the invention has lower cost than a linear motor, and has faster rotation speed and higher precision than a stepping motor. Motor power can bereduced, and the motor of the invention is more energy-saving and more environmentally-friendly.

The invention relates to a forming die of a continuous fiber-reinforced thermoplastic plastic pipe and a forming method of the forming die. The forming die comprises a machine body, wherein a shaft sleeve, a beam splitting block and a mouth die are sequentially arranged in the machine body along the axial direction; the beam splitting block is fixed by the mouth die on the rear side and the shaft sleeve on the front side, and arc-shaped beam-splitting slits are formed in the beam splitting block; the rear end of the mouth die is locked through a locking nut connected with the machine body; the front end of the beam splitting block is fixedly connected with a spindle. The forming method comprises the following steps: (1) segmenting a molten continuous fiber-reinforced thermoplastic resin-based impregnation tape into multiple arc sections; (2) superposing various layers of segmented impregnation tape; (3) adhering the various layers of impregnation tape; (4) fusing each layer of the impregnation tape to form a tube billet; and (5) sizing the pipe, cooling through a cooling device, cutting through a cutting device, and forming the pipe. The axial bearing capacity of the pipe is greatly improved, so that the axial stiffness of the pipe is greatly improved.

The invention discloses an improved pipe end beveling machine, which comprises a main shaft part. A feeding part is arranged at one end of the main shaft part; a pull rod shaft runs through the main shaft part; a clamping jaw shaft is sleeved on the pull rod shaft; a clamping jaw nut is mounted at the tail end of the clamping jaw shaft; a tapered roller bearing is arranged in the main shaft part;the other end of the main shaft part is provided with a processing cutter head part capable of rotating relatively; a hydraulic driving component used for driving the processing cutter head part is arranged under the main shaft part; and the other end of the pull rod shaft is connected with a clamping jaw component. The invention relates to the field of beveling machines; and through a novel mainshaft structure, the beveling machine is higher in stiffness by more than 1.5 times than a similar domestic beveling machine; the novel expansion claw structure increases the expansion force and solves the problem of indentation on the inner wall of the pipe; and equipped with a high-precision tracking cutter frame, the equipment can machine complex grooves such as U-shaped grooves and double-V-shaped grooves, and is convenient to use.

The invention discloses a lifting ring structure used for a shock absorber. The lifting ring structure comprises a lifting lug ring, a first floating sleeve, a second floating sleeve, multiple buffering sleeves and an inner sleeve. The lifting lug ring is provided with a center axis, the first floating sleeve is sleeved with an inner hole of the lifting lug ring, the second floating sleeve is sleeved with an inner hole of the first floating sleeve, the buffering sleeves are embedded inside a hole of the second floating sleeve and provided with buffering cavities, and buffering rods are arranged inside the buffering cavities. The inner sleeve is sleeved with an inner hole of the second floating sleeve and provided with a connecting hole, and after the inner sleeve is connected with an automobile, the included angle between the axis of the connecting hole and the center axis ranges from 0 degree to 5 degrees. The lifting ring structure is simple, high in bearing capacity and capable of freely floating after assembling.