118results about How to "Reduce bending force" patented technology

An aortic graft device ( 10 ) is provided with a graft portion ( 12 ) integrally fixed to a corrugated trunk portion ( 14 ). A fixing ring ( 16 ) is provided between the graft and trunk portions. The trunk portion ( 14 ) can be everted into the graft portion, leaving the fixing ring ( 16 ) at an extremity of the device for suturing purposes. The fixing ring ( 16 ) is preferably made from a relatively stiff material such as a compressed foam or rubber like material, which provides a relatively solid component for a surgeon to hold during suturing and which can provide a strong support for sutures.

The invention discloses a roadside packing gob-side entry retaining top-cutting explosion pressure relief method which comprises the following four steps: I, confirming a top-cutting method, the drilling construction time and a drilling construction site; II, confirming top-cutting pressure relief explosion drilling parameters; III, drilling deep-hole explosion holes and explosive filling and sealing holes; IV, performing explosion top-cutting pressure relief. The roadside packing gob-side entry retaining top-cutting explosion pressure relief method is applied to roadside packing gob-side entry retaining top-cutting explosion pressure relief.

A hitch extension apparatus for attaching an implement with a pto driven drive shaft having front and rear universal joints to a tractor drawbar. The apparatus comprises a first member adapted for attachment to the tractor drawbar by insertion of a drawbar pin through the drawbar such that the first member is fixed with respect to the drawbar. An extension member is pivotally attached to the first member about a horizontal pitch axis oriented perpendicular to the travel direction, and about a horizontal roll axis oriented parallel to the operating travel direction. The extension member defines a pivotal attachment location rearward of the draw pin hole adapted for pivotal attachment of the implement about a vertical yaw axis located equidistant from the front and rear universal joints when the drive shaft is connected to the tractor power take off. The pitch axis can be located forward of the yaw axis, and forward of the draw pin hole in order to reduce bending forces on the drawbar.

The present invention relates to a stator core of a motor for a washing machine that is formed by connecting a plurality of arc-shaped core pieces to each other, each of the core pieces being formed by stacking core piece steel plates on top of each other and by bending the stacked core piece steel plates in such a manner that core piece teeth are disposed outward in the radial direction of a core piece yoke and the core piece yoke has the same curvature as a yoke of a stator core, the core piece yoke on each core piece steel plate having a plurality of incised portions for bending formed partially incised thereon between the respective neighboring core piece teeth on the opposite side to the side on which the core piece teeth are formed.

The invention relates to a hot rolled strip convexity on-line closed loop control method. The method is characterized by comprising the following steps that (1) strip steel reaches an inlet of a finishing rolling unit, the required roll bending force set value of each rack of the finishing rolling unit is worked out through a finish rolling model according to temperature, thickness, width and materials of the strip steel and real-time roll shape of the rolls; (2) after each rack of the finishing rolling unit bites steel, the roll bending force of each rack is switched from balance force to the roll bending set value worked out through the finish rolling model; (3) during rolling of the finishing rolling unit, certain adjustment for the roll bending force is conducted according to change of the rolling force of each rack by means of the strip shape keeping function; and (4) the closed-loop control over strip steel convexity is added, during rolling of the finishing rolling unit, the adjustment value of the required roll bending force of each rack is worked out by means of a convexity-to-roll bending force conversion algorithm according to the deviation between the set value and a strip steel convexity feedback value real-timely detected by a finish rolling outlet profile gauge, the roll bending force of each rack of the finishing rolling unit is real-timely adjusted, and the closed-loop control over the strip steel convexity is achieved.

A positioning apparatus includes a moving member, an actuator, and a controller. The moving member can move in at least a first direction. The actuator is provided along the first direction. The controller controls a current applied to the actuator in order to support the weight of the moving member. The bending rigidity of the moving member in the first direction is greater than the bending rigidity of the moving member in a second direction perpendicular to the first direction.

A wind turbine having a wind turbine tower with a nacelle provided on the top to which a rotor hub with one or more wind turbine blades is rotatable mounted. A cable twisting system is arranged inside the wind turbine tower and suspended from the bottom of the nacelle. The cable twisting system comprises a number of cable spacing plates having a number of guiding means for guiding the electrical cables from the nacelle to the bottom of the wind turbine tower. A first and second element having engaging fingers configured to be brought into contact with each other are coupled to two adjacent cable spacing plates. The first element rotates relative to the second element when the nacelle is yawing, bringing the fingers into contact with each other. The two elements then rotate together as the nacelle continues to yaw in the same direction.

The method of making an electromagnetically excitable core of an electrical machine with a multiphase winding (13) includes preparing a core (10) having a substantially parallelepiped shape, which is provided with a plurality of parallel grooves (N1 to N36; N1 to N48) in one side in a first step. In at least one subsequent step at least three phase windings (100, 200, 300) are laid in these grooves in such a manner that only one winding overhang is outside of the core.

Disclosed herein is an electrically conductive buoyant cable. The cable includes an electrical conductor member having at least one electrical conductor. The cable also includes a filler layer that consists of buoyant materials with relative density lower than 1. The filler layer surrounds and encloses the electrical conductor member. The invention includes a jacket, which, in one embodiment, contains a small quantity of filler material or no filler material. The jacket surrounds the filler layer. In one embodiment, the filler layer and the jacket are made of the same material.

The invention provides a crossing angle and roll bending force reduction based roll shape design method of a work roll of a PC rolling mill, aiming at the rolling characteristics of the PC rolling mill. The roll shape design method comprises the following steps of: (a) collecting equipment parameters and process parameters of the PC rolling mill; (b) collecting rolling process parameters of typical band steel; (c) setting a curve equation of the work roll; (d) optimally computing curve parameters of a roll shape; and (e) substituting the curve parameters of the roll shape into the roll shape curve equation of the work roll so as to obtain an optimized roll shape curve equation of the work roll. The invention enhances the stability of the PC rolling mill because a roll shape curve of the work roll reduces the crossing angle and the roll bending force, prolongs the service life of the work roll, enhances the convexity control capacity of the PC rolling mill, not only ensures the qualityrequirement of a profile shape, but also meets the requirement for industrial application precision, and can also be used for the roll shape curve design of the work roll of any rack according to actual field situation.

The invention discloses a sectional bending mould for machining heavy forging, includes a inclined concave mould, and a convex mould and a back pressure mould matching with the concave groove, wherein, upper surface of the inclined concave mould has a concave groove cavity with both sides end face of inner-low and outer-high inclined surface, lower surface of the convex mould has a concave plate matching with the concave groove cavity, appearance of lower surface of the convex plate is matching with shape of inner surface of middle of the forging, the back pressure mould is disposed inside the concave groove cavity with its contour of upper surface matching with shape of non-bending area of outer side of middle of the forging, the lower surface is provided with a elastic mechanism to connect with bottom of the concave groove cavity, the elastic mechanism can push the back pressure mould to upper surface of the inclined concave mould without external force. The invention can be used for machining bending of heavy forging, and has advantages of low cost and good quality.

The invention provides a creep compression experimental apparatus. The creep compression experimental apparatus comprises an installation frame connected between an upper stretching rod and a lower stretching rod of a creep test machine, wherein the installation frame comprises an upper pressure block and a lower pressure block, the upper pressure block is provided with a threaded hole A, the lower pressure is provided with a conical hole coaxial with the threaded hole A, one end of a test sample is fixed in the threaded hole A, the other end is located in the conical hole by virtue of a conical head of a conical positioning device, and when the conical head is matched with the conical hole, the threaded hole A, the conical head, the conical hole and the test sample are coaxial. The auto-positioning function is realized by virtue of a conical surface contact of the conical positioning device, so that the test sample can be well centralized in the single-axis compression process, and the instability bending possibility of the test sample can be reduced. By virtue of the reversely-arranged extension rod, the rebound displacement of a precompressed sensor measuring head in the reset process is taken as the compression creep deformation of a sample, so that the occurrence of overstroke of the sensor measuring head and damage to the displacement sensor can be effectively avoided.

The invention discloses a spinal anesthesia postoperative auxiliary rehabilitation device. The spinal anesthesia postoperative auxiliary rehabilitation device comprises an upper connecting portion, afirst elastic portion, a middle connecting portion, a second elastic portion and a lower connecting portion, wherein a shoulder supporting beam with a shoulder bandage is fixed on the upper connectingportion; an abdomen supporting beam with an abdomen bandage is arranged at the middle connecting portion; a waist supporting beam is fixed on the lower connecting portion; a body side portion of thewaist supporting beam is a hook portion while the front portion of the waist supporting beam is an inclined bent waist portion; and the supporting beam is an elastic beam body. The device has a wearable structure, is small in size and portable, and can be used at any time in any places; the device has a multi-point stabilizing effect on the spine of a patient in a vertical direction, the bending range of the spine of the patient is limited, the curvature of the spine of the patient is reduced, and recovery of the spine and other wounds is facilitated; and moreover, the elasticity of the elastic portion of the device can be adjusted, the movement range of the spine of the patient can be controlled by himself, the spine can be protected, furthermore, the amount of exercising can be adjustedto adapt to different rehabilitation periods, and high-quality body recovery is facilitated.

The invention discloses a bending forming method of railway van coupler yoke forge pieces. The method is realized by an incline female die, and a male die which is matched with the female die and a back pressure die. The method comprises the steps of:preheating a forge piece rough part, carrying out primary bending by taking the highest point of the incline of the incline female die as a first supporting point, and carrying out secondary bending by taking the lowest point of the incline of the incline female die as a second supporting point. The method has the advantages of low cost and good processing quality.

The present invention relates to a stator core of a motor for a washing machine that is formed by connecting a plurality of arc-shaped core pieces to each other, each of the core pieces being formed by stacking core piece steel plates on top of each other and by bending the stacked core piece steel plates in such a manner that core piece teeth are disposed outward in the radial direction of a core piece yoke and the core piece yoke has the same curvature as a yoke of a stator core, the core piece yoke on each core piece steel plate having a plurality of incised portions for bending formed partially incised thereon between the respective neighboring core piece teeth on the opposite side to the side on which the core piece teeth are formed.

The invention discloses a pair of shock resistant motorcycle gloves, comprising hand parts, wherein each hand part comprises a hand back part and a four-finger part, and a sponge rubber layer with an integrated structure is arranged on the hand back part and the four-finger part; the four-finger part is bent; the thickness of the sponge rubber layer is 35-40 mm; an impact buffering body is arranged on the sponge rubber layer of the hand back part; the impact buffering body is made of foam plastic; and reflective strips are arranged on the sponge rubber layer of the four-finger part. According to the shock resistant motorcycle gloves, the four-finger part adopts the bent structural design, when a user wears the gloves, four fingers of each hand of the user can naturally bend in the gloves, the gloves fit with the hands perfectly, when the user holds a handlebar, the force on bending the four-finger part of each glove is reduced, and the hand fatigue is accordingly reduced; the sponge rubber layer is arranged on the hand back part and the four-finger part of each glove, so that the buffering performance is increased, and the hands are protected from impact and friction and other accidental injury in accidental circumstances.

The present invention relates to a high-pressure pump (1), particularly for delivering fuel for a common rail fuel injection system, comprising a pump body (2), in which at least one cam drive (3) having a cam shaft (4) is received, wherein said cam shaft is pivotally supported about a cam shaft axis (6) in the pump body (2) and / or in a flange body (5) by means of at least one bearing arrangement,and wherein the bearing arrangement comprises a radial bearing bush (7) extending in the direction of the cam shaft axis (6), and an axial bearing disk (8), which is integrally formed on the radial bearing bush (7) on an end, and / or is connected to the same, wherein the axial bearing disk (8) extends in a radial extension direction (9) of <90 DEG relative to the cam shaft axis (6) in the non-installed state, wherein the radial extension direction (9) is directed toward the radial bearing bush (7) and can be brought into an axial bearing plane (10) extending at an angle of 90 to the cam shaft axis (6) in the installed state by means of elastic deformation of the axial bearing disk (8).

A thin walled, hubbed cannula with an exterior diameter of approximately that of a 20 gauge surgical instrument and in interior bore having a diameter that is slightly larger than a 23 gauge or 25 gauge surgical instrument. The scleral contact surface of the hub of the adapter also can be rounded to provide a pivot point for the surgical instrument shaft, thereby reducing bending forces on the relatively thin shaft of the instrument.

Rotors apparatus usable in energy storage devices and power systems include a plurality of laminations having a center and at least one orifice spaced a distance from the center, and at least one fastener extending through the orifice. The one or more fasteners, the one or more orifices, or combinations thereof are sized to reduce contact between the fasteners and the laminations during rotation of the rotor apparatus. The fasteners and orifices can define an envelope, corresponding to the maximum space able to be occupied by a fastener to reduce contact between the fastener and the laminations, and one or more fasteners can have a volume of material less than the volume of the envelope to reduce bending forces on the fastener.

An apparatus for extracting trees, stumps, posts and similar structures from the ground is attached to a 3-point hitch tractor accessory. The apparatus comprises a base frame and a lifting frame. The base frame includes a pair of vertical guides for confining a corresponding pair of vertical rails on the lift frame. A piston / cylinder type of linear motor is connected between the base frame and lifting frame to translate the lifting frame relative to the base frame. A pair of independently controlled gripping cylinders that are connected to respective gripping cams are mounted on the lifting frame. A tree is extracted by engaging the gripping cams against the tree and translating the lifting frame.

The invention discloses a stretching and pressing combined type plate stretch forming machine which is plastic working equipment for stretch forming of a plate type three-dimensional curved surface piece, and belongs to the field of mechanical engineering. A first object of the invention is to simplify hydraulic pressure of equipment and an electrical control system to lower the manufacturing cost; and a second object is to eliminate bending force on a plate when a vertical oil cylinder on a previous clamping device is loaded, so that pulling stress and strain of the stretch forming piece aredistributed more uniformly, and the shape stability and material utilization of the formed piece are improved. The stretch forming machine mainly consists of a rack, guide devices, downward pressing devices, clamping devices and horizontal prestretching devices (as shown in figures); the rack and the guide devices support the downward pressing devices, the clamping devices and the horizontal prestretching devices on the two sides; each clamping device consists of a plurality of clamping mechanisms; the downward pressing devices consists of a plurality of downward pushing mechanisms; the clamping mechanisms are arranged on the two sides of a mould in a row correspondingly; the downward pushing mechanisms are arranged on the two sides of the mould in a row correspondingly; and the horizontalprestretching devices consist of four hydraulic oil cylinders and universal joints and are arranged on the guide devices on the two sides.