40results about How to "Reduce metal fatigue" patented technology

A structural reinforcement for a hollow member comprising a rigid reinforcing member having a shape that substantially conforms to the cross section of the hollow member to be reinforced with an expandable adhesive material over at least a portion of the surface of the structural reinforcement having one or more extensions on its external surface which control and direct the direction in which the adhesive material expands to bond the reinforcing member to the internal surface of the hollow member, some of the extensions also provide improved reinforcement.

A bone plate is dimensioned for securing the rotated cut segment of an upper tibia to the lower portion of the tibia as part of a tibial leveling osteotomy procedure for an animal. The bone plate includes an elongated shaft, a head portion pre-bent with respect to the elongated shaft, and a transition between the elongated shaft and head portion including opposing concave sidewalls. The elongated shaft has a centerline and the pre-bent head portion has a centerline angled with respect to the centerline of the elongated shaft to dispose the elongated shaft collinear or approximately collinear with respect to the lower portion of the tibia and to better fit the head portion to the rotated cut segment of the upper tibia.

The present invention provides a novel clutch connector assembly for jointed pipe, threaded pipe, coiled tubing or any threaded or non-threaded pipe for a bottom hole assembly that eliminates the need to use screw threads to mate two pipes or mechanical assemblies, harbors a spring-loaded mechanical locking system in addition in to a pressure-activated, component protectant system, requires no significant tools, other than an Allen wrench or similar screw setting device, permits distributed torque loading, allows for movement in either a clockwise or counter clockwise rotational direction through interlocking castellations and presents a removeable and replaceable valve assembly preventing retrograde hydrocarbon advancement through a drilling pipe.

A semiconductor device and a method for manufacturing the semiconductor device. The semiconductor device includes an insulating substrate, a semiconductor chip, a plate member, and a cooler. The insulating substrate includes insulating ceramics serving as an insulating plate, and conductive plates provided on opposite surfaces of the insulating ceramics. The semiconductor chip is provided on an upper surface of the insulating substrate. The plate member is bonded to a lower surface of the insulating substrate. The cooler is bonded to a lower surface of the plate member. At least one of bonding between a lower surface of the insulating substrate and the plate member and bonding between a lower surface of the plate member and the cooler is performed via a bonding member composed mainly of tin. Also, a cyclic stress of the plate member is smaller than a tensile strength of the bonding member.

A cam follower assembly has an outer race and an inner race located therein. Rollers are located between the outer and inner races to enable the two races to rotate relative to one another. The surfaces of the inner race are lapped and subsequently treated using a cold plastic deformation process. This process is a dry mechanical process that involves applying a high energy flow of abrasive material in a carrier medium to the metal surfaces of the inner race. The present invention is not limited to treatment of the surfaces of the inner race, however, as the surfaces of the outer race as well as the surfaces of the rollers may be similarly treated.

A swash plate disposed in a housing is a ball bearing assembly. The outer race of the ball bearing assembly is free to move relative to a swash plate drive shaft and also relative to reciprocating members driven by the swash plate and mounted for axial movement.

A spiral spring for a reclining adjustment mechanism for a vehicle seat in which ridges are formed on both ends in a direction perpendicular to a coiling direction of a surface of a spring plate member formed by a band-like steel plate having high hardness so that the ridges project from the surface, projected surfaces of the ridges are curved, and the spring plate member is spirally formed into a coil. The spring plate member has a pitch coiled structure in which a gap between an intermediate spring plate member and an inner spring plate member is formed to be smaller than a gap between an outer spring plate member and the intermediate spring plate member. An engagement piece bent in the radial direction is formed at the end of the outer spring plate member, and an engagement coiled core section is formed in the inner spring plate member.

The invention discloses a tower of a horizontal-axis wind turbine, and relates to the technical field of wind power generation equipment. The tower comprises a leveling base, leveling cones, a rotating support, an offset seat and an adjustable tower body. Round sleeves are arranged on the lower edge of the leveling base. The leveling base is arranged on the ground. The multiple leveling cones arearranged. Each leveling cone penetrates through one round sleeve on the lower edge of the leveling base. The multiple leveling cones are evenly arranged around the circumferential direction of the leveling base. The rotating support is arranged at the top of the leveling base and is connected with the leveling base through a bearing. The rotating support rotates horizontally and is connected withthe bottom of the offset seat through a nut. The bottom of the adjustable tower body is fixed to the center of the top of the offset seat. The height of the adjustable tower body can be adjusted. Thetower has the beneficial effects that the leveling base, the leveling cones and the offset seat are arranged, the wind driven generator tower can be fixed to the ground better through cooperation of the leveling base and the leveling cones, stress borne by the tower is reduced through the arrangement of the offset seat, the fatigue value of tower metal is reduced, and the service life of the toweris prolonged.

The invention relates to a feeding device of a shearing machine. The feeding device comprises a clamping mechanism for clamping a bar and a feeding mechanism for feeding the bar to a shearing system of the shearing machine. The feeding mechanism comprises a support and a feeding cylinder for driving the clamping mechanism to move back and forth. The feeding cylinder is connected to the support. The feeding device further comprises a guiding bearing bar. The clamping mechanism is erected on the guiding bearing bar in the mode of sliding relative to the guiding bearing bar. The clamping mechanism is improved, stable clamping is ensured, and meanwhile an adjusting device is added, so that bar conveying abrasion is avoided. The feeding device has the advantages of being simple in structure and capable of improving the product quality and prolonging the service life of a machine table.

The invention discloses a fixing device for neutralizing actions between two vertebral bodies, in particular a fixing device for neutralizing or countervailing actions between two adjacent vertebral bodies. The fixing device is a plate-shaped body, one side of the plate-shaped body is provided with a nail part, and the fixing device is embedded into two corresponding vertebral bodies and intervertebral discs by the nail part. When necessary, the fixing device also can be matched with a support assembly, such as a metal cage, and embedded into the intervertebral discs of the two corresponding vertebral bodies. Therefore, the fixing device can effectively control actions between the two vertebral bodies, such as forward bending, backward bending, left and right incline, left and right turn, and the like, and enable an autogenous bone embedded between the two adjacent vertebral bodies not to generate the problem of non-union or psuedarthrosis because of actions between the vertebral bodies before completely inosculated with the vertebral bodies.

A method for preventing breakage of a steel spring and an inwardly-recessed vertical stop are provided; the upper end of a rubber body is a hollowed structure, the rubber body contacts a frame guide barrel when a locomotive is idle, the rigidity of the vertical stop may be adjusted by adjusting the thickness or height of the hollow portion of the rubber body and the diameter or height of a solid portion of the rubber body, the outer side of the rubber body is provided with a circular straight segment and circular arc segments, and the variable rigidity of the vertical stop may be adjusted by adjusting an included angle of the circular straight segment with horizontal plane, the times of rigidity variation of the vertical stop may be adjusted by adjusting the number of the circular arc segments of the rubber body, a base is embedded in the rubber body of the vertical stop such that the base can limit the vertical stop, and the limited position of the vertical stop and the rigidity of the vertical stop may be adjusted by adjusting the height of the base; vertical load on the steel spring is reduced by adjusting the rigidity, variable rigidity and limited position of the vertical stop, metal fatigue of the steel spring occurring in the operating process of the locomotive is reduced, and the breakage of the steel spring is prevented.

The invention discloses a hydraulic pipe clamping tool which comprises two side plates, wherein a plurality of clamping blocks are respectively mounted on the side walls opposite to the two side plates; a clamping surface is arranged on the end part of each clamping block, and a plurality of rectangular grooves are formed in each clamping surface; each clamping surface is divided into a plurality of arc segments through the rectangular grooves, and elastic cushions are mounted on the arc segments; two opposite clamping blocks are merged into a closed circular clamping ring, and the diameters of a plurality of circular clamping rings are different. A plurality of telescopic grooves are formed in the peripheral wall of a securing plate, and the bottom surface of each telescopic groove is protruded on the direction vertically pointing to the center of the securing plate along the outer wall of the securing plate. A plurality of rectangular grooves of which the axes are parallel to the axis of the circle of each clamping surface are formed in the clamping surface. When each clamping block is extruded, the rectangular grooves have a certain width, so that the clamping part of the clamping block has a certain storage space when being deformed, therefore the metal fatigue degree in the clamping block is reduced, and the purpose of prolonging the service life of the clamping block is achieved.

The invention discloses an efficient energy-saving submerged arc furnace structure with a cooling function, and relates to the technical field of submerged arc furnaces. The structure comprises a submerged arc furnace body, a cooling mechanism, an auxiliary heating mechanism and a flow guide exhaust mechanism, wherein the cooling mechanism is arranged on the outer wall of the submerged arc furnace body, the flow guide exhaust mechanism is arranged on one side of the submerged arc furnace body, the auxiliary heating mechanism is arranged on the back face of the submerged arc furnace body, and the submerged arc furnace body comprises a combustion furnace chamber, a heat energy absorption box and a connector. By arranging a water pump, cooling water in a water tank is effectively pumped out and guided into an annular pipe and a supporting guide pipe which are arranged on a water guide support through the effect of a water guide pipe, and then the cooling water is atomized and sprayed out through the effect of an atomization spray head, so that it is guaranteed that the cooling water is evenly sprayed, and then cooling water flows through the furnace wall, so that corresponding heat can be directly taken away, furnace lining erosion is slowed down, metal fatigue of a furnace shell is reduced, the service life of the submerged arc furnace body is prolonged, and the durability of the submerged arc furnace body is effectively enhanced.

The invention discloses a hydraulic pipe clamping tool, which includes two side plates, a plurality of clamping blocks are respectively installed on the side walls facing the two side plates, and a clamping surface is provided at the end of the clamping blocks. In addition, a plurality of rectangular grooves are formed on the clamping surface, and the plurality of rectangular grooves divide the clamping surface into a plurality of circular arc segments, elastic pads are installed on the circular arc segments, and the two opposing clamping blocks merge A closed circular clamping ring is formed. The diameters of multiple circular clamping rings are different. There are multiple telescopic grooves on the outer peripheral wall of the fastening plate. The bottom surface of the telescopic groove is vertically directed along the outer wall of the fastening plate. The direction of its center is highlighted. On the clamping surface, there are a plurality of rectangular grooves whose axes are parallel to the axis of the circle where the clamping surface is located, that is, when the clamping block is squeezed, the rectangular groove has a certain width, which can make the clamping part of the clamping block There is a certain retractable space during deformation, thereby reducing the metal fatigue degree inside the clamping block, and achieving the purpose of prolonging the service life of the clamping block.

A constant contact steel spring crack preventing method and a vertical backstop are provided. A revolving body-shaped rubber boss is arranged over a rubber main body; the rubber boss has a contact with a framework guide cylinder upon zero load of a locomotive; rigidity of the vertical backstop can be adjusted via adjustments of the diameter or the height of the rubber boss and the rubber main body; an included angle between an annular straight flat section of the rubber main body and a horizontal surface is adjusted, so variable rigidity of the vertical backstop can be adjusted; the rubber boss is connected with the rubber main body via an annular arc-shaped section; times of variable rigidity of the vertical backstop can be adjusted via adjustments of section numbers of the annular arc-shaped section of the vertical backstop; a pedestal is embedded into the rubber main body of the vertical backstop, so the pedestal can space the vertical backstop; positions of a vertical backstop spacing position and rigidity of the vertical backstop can be adjusted via adjustments of the height of the pedestal; vertical load of a steel spring can be reduced via adjustments of rigidity, variable rigidity and spacing position of the vertical backstop; and metal fatigue of the steel spring during the operation of the locomotive can be reduced, so steel spring crack can be prevented therefore.

The invention relates to the technical field of shoe making machines, and discloses a leather cutting machine with cleaning and swaging functions. The leather cutting machine comprises a base, the upper side of the base is movably connected with a blanking plate, the right side of the blanking plate is movably connected with a push-out motor, the left side of the push-out motor is movably connected with a sliding rail, and a slider is arranged on the sliding rail. Foreign matter on leather can be absorbed by cleaning sponge on the surface of a cleaning roller, cleaning balls constantly squeezethe leather, leather wrinkles are flatted, the leather becomes soft and is convenient to cut, the foreign matter can be stopped from entering the machine, and the cutting edge of a cutter blade is prevented from being damaged by the foreign matter. The slider is pushed by the push-out motor, the blanking plate is pushed out of the machine, a worker can take the cut leather without putting the hands into the machine, the working efficiency is improved, and the safety of the worker is ensured. Through the state from compression to return of a return spring, certain elastic force is provided forthe lifting process of a main shaft, the metal fatigue of an incomplete gear and a rack is reduced, and the service life of the machine is prolonged.

A crank assembly for a hose reel is provided. The crank includes an axle rod and a triangular frame assembly. The axle rod extends perpendicular to the triangular frame assembly. The axle rod extends from the medial portion of on of the three tubular members. In this configuration, and when the crank is in use, force is distributed to opposing sides of the axle rod. Further, the triangular shape provides a support for a flat plate upon which an indicia may be displayed.