40results about How to "Avoid stress concentration situations" patented technology

The invention discloses a telescopic building steel structure connector, which relates to the technical field of building construction. The invention includes I-shaped steel and several T-shaped sliders, one end of the I-shaped steel and the T-shaped slider is fixedly connected with a connecting plate, the T-shaped slider is slidably connected with the surfaces on both sides of the I-shaped cylinder, and the inside of the T-shaped slider is provided with A number of chute; the present invention uses waist-shaped holes, threaded holes and fastening screws. When the connecting piece is fixed and impacted by external force, the fixing bolts remain still, and the waist-shaped holes slide slightly left and right relative to the fixing bolts, so that the T-shaped sliding The block swings slightly, which improves the buffering effect, avoids stress concentration, protects the fixing bolts, and improves its service life; the present invention uses airbags, sliding rods, air intake channels and air outlet channels, when the T-shaped slider slides left and right When the slide bar squeezes the airbag, the airbag can blow air into the waist-shaped hole through the blowing channel to avoid overheating and fatigue of fastening bolts and other structural parts under severe friction.

The invention provides a vehicle auxiliary frame structure and a mounting method thereof. The vehicle auxiliary frame structure is provided with an upper edge plate, a lower edge plate and a connecting part, wherein the connecting part is integrally formed at the bottom of the upper edge plate, and the connecting part and the lower edge plate are arranged in an attached mode. The connecting part and the lower edge plate are connected in a welded mode to form a welded joint, the connecting part comprises a main connecting part body and an auxiliary connecting part body which is formed on at least one end portion of the main connecting part body, the welded joint comprises a main welded joint body following the main connecting part body in shape, and an auxiliary welded joint body, the auxiliary welded joint body follows the auxiliary connecting part body in shape due to guiding of the auxiliary connecting part body, and the auxiliary welded joint body and the main welded joint body forman inflection point at an intersection place. The vehicle auxiliary frame structure further comprises a point welding position located between the auxiliary connecting part body and the lower edge plate so as to form point welding connection between the auxiliary connecting part body and the lower edge plate, and the auxiliary welded joint body and point welding connection are simultaneously formed between the auxiliary connecting part body and the lower edge plate, so that welded joint connection and point welding connection jointly bear stress from the outside, the situation of stress concentration at the tail end of the welded joint can further be avoided, and the phenomenon of cracking of the welded joint is reduced.

The invention discloses a lining repairing device of an induction furnace. The lining repairing device of the induction furnace comprises an arc rounding press block, an arc supporting press block, a right-and-left threaded part, an arc rounding inner thread part and an arc supporting inner thread part, wherein the right-and-left threaded part comprises an arc rounding thread part and an arc supporting thread part which is fixed opposite to the arc rounding thread part; a thread rotation direction of the arc rounding thread part is opposite to that of the arc supporting thread part; one end of the arc rounding inner thread part is connected to the arc rounding press block fixedly, and the other end of the arc rounding inner thread part is in threaded connection with the arc rounding thread part; one end of the arc supporting inner thread part is connected to the arc supporting press block fixedly, and the other end of the arc supporting inner thread part is in threaded connection with the arc rounding inner thread part. Right-and-left threaded part rotation spaces are formed in the arc rounding inner thread part and the arc supporting inner thread part. Through the lining repairing device of the induction furnace, the rounding effect of a lining of the induction furnace can be improved.

A method of installing a flat film mirror. First, the circular film mirror is unfolded into a flat state, and a rectangular thin gasket with holes is evenly and firmly bonded around the film mirror through a special tooling, and the two ends of N ropes are respectively connected to the rectangular gasket. and tension sensors, fix the tension sensors around so that each rope is on the same plane. Then, place the precision support ring under the film mirror, lightly top the film mirror with a side with a ring-shaped step surface, and then install the pressure ring above the support ring, pre-tighten the pressure ring with screws but ensure that the film mirror can Move between the pressure ring and the support ring, apply tension on the outermost end of the rope around the film mirror, and the tension sensor will display the tension value, adjust the tension value and detect the shape of the film mirror in real time, and repeatedly adjust each tension value according to the measured surface shape to make the film The mirror shape is optimal. The invention realizes the installation of the high-precision flat film mirror through the support of the support ring and the coplanar tension adjustment of the edge of the film mirror, and can meet the use requirements of the high-precision optical system.

The invention discloses a laser sealing method and system. The method comprises the following steps: generating parallel laser light; converting the parallel laser light into deformed laser light of which the light beam is enlarged; displaying a pattern matched with the shape of an encapsulating material, and forming matched laser light by the deformed laser light through the pattern; reflecting the matched laser light to form encapsulating laser light of which the shape is the same as that of the encapsulating material. The light beam of the parallel laser light is enlarged to obtain the deformed laser; the deformed laser light is used for forming the matched laser light through the pattern matched with the shape of the encapsulating material, the matched laser is reflected to form the encapsulating laser light of which the shape is the same as the encapsulating material, and the encapsulating laser light vertically irradiates on the encapsulating material, so that synchronous heating and synchronous laser sealing are realized.

The invention discloses an in-situ thermoplastic forming lining pipe and a construction process. The in-situ thermoplastic forming lining pipe comprises an outer pipe. The outer pipe comprises a blocking layer and a supporting layer. The blocking layer is located on the outer side of the supporting layer and used for water prevention and corrosion prevention. The supporting layer comprises a fiberreinforced layer. A fiber network and thermosetting resin are included in the fiber reinforced layer. The fiber network is located in the thermosetting resin. A secondary curing layer is fixed to theinner side face of the supporting layer and comprises a light-cured resin layer and a thermoset resin layer, the thickness of the light-cured resin layer ranges from 0.2 mm to 1 mm, and the thicknessof the thermoset resin layer ranges from 0.5 mm to 2 mm. After the light-cured resin layer is hardened due to UV-irradiation, the round pipe form of the outer pipe can be supported. An inner pipe isfurther included and is made of a thermoset PVC or resin material, the outer diameter of the inner pipe is larger than the inner diameter of the inner pipe and the inner diameter of the outer pipe, and the difference value is 1 / 10-1 / 8 of the diameter of the outer pipe. The lining pipe can effectively support a pipeline and bear stress, and stress concentration can be avoided.