30results about How to "Reduce edge stress" patented technology

The invention provides a large steel welded vertical oil tank. The large steel welded vertical oil tank is provided with a tank bottom, a tank wall and a tank top. A transition connecting ring is arranged between the tank bottom and the tank wall and provided with an annular bottom section, an arc-shaped transition section and a vertical cylindrical section. The tank bottom is connected with the annular bottom section of the transition connecting ring in a welded mode. The tank wall is connected with the vertical cylindrical section of the transition connecting ring in a welded mode. The tank top can be a fixed top and can also be an outwards-floating top. The large steel welded vertical oil tank has the advantages that T-shaped joints of a tank wall and a tank bottom of an existing large oil tank and large fillet welds on the joints are omitted, main danger points of the whole oil tank are eliminated, and safe operation of the large oil tank is guaranteed, wherein the transition position between the tank wall and the tank bottom is not prone to low-cycle fatigue damage, an attachment weld of the transition portion between the tank wall and the tank bottom is not prone to tearing damage, the anti-seismic property of the large oil tank is greatly improved, and the anti-seismic property of the large oil tank is good.

The cam follower roller device comprises a tappet body 12, a pin 14 and a roller 16 mounted on said pin, the tappet body comprising holes 12b, 12c for mounting pin ends 14b, 14c of said pin on said tappet body. The device further comprises one deformable ring 18, 20 disposed between each pin end 14b, 14c of said pin and an inner wall of the associated hole 12b, 12c of said tappet body.

The invention discloses a metal magnetic pump plane bearing structure, which comprises a bearing box, a controller and a main body of a magnetic pump. A controller is arranged on one side of the main body of the magnetic pump, and a motor is arranged on one side of the controller. The upper end of the motor is An alarm is provided, one side of the alarm is provided with a rear bearing cover, one side of the rear bearing cover is provided with a bearing box, and several plane bearings are provided inside the bearing box, and the inside of the plane bearing is provided with A drive shaft, and the drive shaft is connected with the motor, a front bearing cover is provided on one side of the drive shaft, an external magnetic rotor is provided on one side of the front bearing cover, and the external magnetic rotor is connected with the drive shaft, the There is a spacer on one side of the outer magnetic rotor, and a heat dissipation pipe is arranged inside the spacer. By setting a plane bearing in the bearing box, the contact length is increased, so that the bearing can obtain high load capacity and High rigidity, and can reduce edge stress, improve service life.

The invention provides an integrated circuit structure and a manufacturing method thereof. A first sealing layer is formed in a substrate, a second sealing layer is formed on the substrate, and the first sealing layer and the second sealing layer provide pressure stress so as to counteract the warping force of the substrate. Moreover, the filling ratios of inorganic fillers of the first sealing layer and the second sealing layer are different such that the first sealing layer and the second sealing layer have a pressure stress difference, and the binding force of the first sealing layer and the second sealing layer can be ensured while the substrate is not warped.

The invention discloses a chip mounter for a bump wafer, and belongs to the technical field of semiconductor packaging. The chip mounter comprises a chip mounting base for bearing the bump wafer to be mounted, a Waferring platform mounted around the chip mounting base, and a coffer dam arranged between the chip mounting base and the Waferring platform, wherein a threaded through hole facing to the center of the chip mounting base is formed in the side surface of the Waferring platform; the height difference between the top of the coffer dam and the top of the chip mounting base is h, and the value of H-h is not less than 0 micron and not more than 50 microns; a boss which extends down is arranged at the lower part of the coffer dam; the coffer dam is connected with the chip mounting base through a fixing device; a blind hole facing to the center of the chip mounting base is formed in the outer side surface of the fixing device; a through hole perpendicular to the blind hole and a flat screw for connecting the through hole with the blind hole are formed over the blind hole, and the tail of the blind hole is matched with the boss. According to the chip mounter, the chip mounting base and the Waferring platform are designed and the coffer dam is added between the chip mounting base and the Waferring platform, so that the problems of easy fragmenting, cracking and the like of edges in a bump wafer mounting process are solved.

The invention relates to an idler wheel, in particular to an idler wheel with a drum inner bore, and belongs to the technical field of mechanical structure. According to the technical scheme provided in the invention, the idler wheel with a drum inner bore comprises an idler wheel main body, wherein the inner bore is arranged in the idler wheel main body, the vertical section of the inner wall of the inner bore is arched, and the middle of the inner wall is protruded towards the central line of the inner bore so that the inner diameter of the middle of the inner bore is smaller than the inner diameter of the end of the inner bore. The inner surface of the idler wheel in the invention is drum-shaped so as to reduce the boundary stress of the idler wheel and abrasion. The idler wheel and the idler wheel pin use clearance fit so that the lubricating oil can further enter the space between the idler wheel and the idler wheel pin adequately for carrying out lubrication, so as to reduce the abrasion between the idler wheel and the idler wheel pin and prolong the service life of the idler wheel and the idler wheel pin.

The invention provides a display panel and a display device, the display panel comprises a support layer, a display layer and a cover plate; the display layer is arranged at one side of the support layer, and the cover plate is arranged at one side, deviating from the support layer, of the display layer. The display panel comprises a bending area, and when the bending form of the display panel isconfigured to be bent outwards, at least the orthographic projection of the bending area of the display layer on the cover plate is located in the cover plate; when the bending form of the display panel is configured to be bent inwards, at least the orthographic projection of the bending area of the display layer on the supporting layer is located in the supporting layer. According to the displaypanel provided by the invention, the situation that the flexible display panel is broken is improved, and the bending capability and the reliability are improved.

The invention provides an LED packaging device, and the device comprises a packaging substrate which is provided with a first surface and a second surface, and the first surface and the second surface are opposite to each other; the LED chip is arranged on the first surface of the packaging substrate; the light-transmitting unit is arranged on the first surface of the packaging substrate, the light-transmitting unit is provided with an inner cavity, and the LED chip is located in the inner cavity; wherein the inner cavity is provided with an upper surface and a side surface, the upper surface and the side surface are provided with a first connecting part, and the first connecting part is a curved surface or an inclined surface or a combination of the curved surface and the inclined surface. The structure can reduce the edge stress of the light-transmitting unit and reduce the risk that the light-transmitting unit is broken along the edge while the light-emitting efficiency of the LED chip is not influenced.

The invention relates to a bearing ring (2, 3) for a rolling bearing (1), in particular for a tapered roller bearing, which has a rolling surface (8) for rolling bodies and an essentially axially extending outer surface (10), which is designed to be fixedly connected to the element to be supported in a torsionally fixed manner, and the bearing ring has first and second substantially radially extending axially delimiting the bearing ring (2; 3) Two edge surfaces (12; 14), wherein an edge (16; 18) is formed on at least one edge surface (12; 14), said edge being designed to be flexible under pressure loading. The invention also relates to a rolling element (4) with a flexibly designed end region (20; 22) and a rolling bearing with a bearing ring (2; 3) of this type and/or a rolling bearing (4) of this type.

The invention discloses a combined type deviation rectifying device for a transition section. The combined type deviation rectifying device comprises a middle beam bracket, center pillars, side pillars, regulating brackets and connecting profile steel; the middle beam bracket is arranged on a middle frame; the side pillars are respectively arranged at two ends of the middle beam bracket; two rows of kidney-shaped slot holes are formed in each side pillars; the center pillars are arranged in the middle of the middle beam bracket, and a through hole used for connecting the corresponding regulating bracket is formed in each center pillar; two ends of each regulating bracket are respectively provided with a first connecting plate and a second connecting plate; the U-shaped open end of each first connecting plate is connected with the through hole of the corresponding center pillar to form a hinged shaft for the corresponding regulating bracket to rotate; two fixing holes are formed in each second connecting plate, and each second connecting plate is fixedly arranged in the kidney-shaped slot holes of the corresponding side pillar through fasteners penetrating through the fixing holes, so that the corresponding regulating bracket can rotate a certain angle vertically around the hinged shaft; the connecting profile steel is welded at one side of the middle beam bracket, and is used for regulating the spacing between the central axis of a middle roll and the central axis of a side roll. The deviation rectifying device is simple in structure, convenient in operation and long in service life, and has a good automatic deviation rectifying effect.