88results about How to "Reduce impact stress" patented technology

The invention discloses a mobile terminal and a falling protection method thereof and belongs to the technical field of mobile communication. The mobile terminal comprises a display panel, a middle frame, a rear shell, a protection module and a detection module. The middle frame is mounted in the rear shell. The display panel is arranged on the middle frame. The protection module comprises a buffering popup block and a popup block control unit. The buffering popup block is mounted on the middle frame. The popup block control unit is used for controlling the buffering popup block to be popped up when the detection module detects falling of the mobile terminal. At the moment when the mobile terminal falls to the ground, the buffering popup block absorbs the impulse generated in the falling process of the mobile terminal, the instantaneous impact stress of the mobile terminal is reduced, so a module is protected, and a stress concentrated phenomenon is avoided. The buffering popup block is arranged on the middle frame, so the mobile terminal can be protected well, and the problems such as screen breakage and internal module damage resulting from the falling of the mobile terminal can be avoided.

A multiple punch and multiple die assembly has a workpiece protector comprising a punch lifter that is operatively associated with each punch for supporting each of the punches in an inactive position as an active punch is moved by the ram to the active, i.e. operating position to thereby eliminate scoring or marking of the sheet material or other workpiece that is being punched. To eliminate the need for hand tools and hand assembly or disassembly, a manually moveable retainer on the punch assembly is provided that can be moved by hand between a punch-releasing and punch-retaining position for holding the punches within the multi-punch assembly during operation. To prevent stress fractures that formerly occurred in die carriers, support of each die is distributed between two different die components thereby reducing impact stress on the carrier as the ram drives the punch through the workpiece.

This invention discloses a ternary compound material underlay anti-wearing tube and its process method, which comprises outer steel tube and anti-wearing underlay, wherein, the anti-wearing underlay is composed of metal wire net, ceramics bar and compound materials and the ceramics is imbedded in the metal wire net holes into one part by compound materials. The processed compound materials underlay anti-wearing tube is one of straight tube, bent tube or three-way tube.

The invention discloses a method for preparing and spraying an anticorrosion coating for a western wind farm tower. The anticorrosion coating consists of priming paint, intermediate coat and finish, wherein the priming paint comprises an elastic resin A, zinc powder, a mixed solvent, an adhesion promoter, a base material wetting agent, an antifoaming agent and a curing agent A; the intermediate coat comprises an elastic resin B, a shielding impervious material, a mixed solvent, an antifoaming agent and a curing agent B; the finish comprises an elastic resin C, a weather-resistant anticorrosion material, a mixed solvent, an antifoaming agent, a wetting dispersing agent, a flatting agent and a curing agent C. The priming paint can weaken and absorb the impact stress of sand and wind on the film, the intermediate coat can weaken the impact stress from the finish, the elastic deformation capacity of the whole coating is improved, the finish has good weather resistance and has the characteristics of high elasticity, high wear resistance, high breaking elongation, high tensile strength, high sand and wind impact resistance and the like, and according to the preparing and spraying method, main performance indexes of the anticorrosion coating meet the application requirements of the western wind farm tower.

The invention relates to a shock-absorption buffer shaft. The shock-absorption buffer shaft comprises an input shaft, an input end cover, a force transfer pin, an input toothed sleeve, an input toothed wheel, a double toothed wheel, a spring, an output toothed sleeve, an output toothed wheel, an output shaft, an output end cover, a limiting bolt, a fastening bolt and an external sleeve. Force is transferred to the input toothed sleeve by virtue of the teeth of the first internal toothed ring of the input toothed sleeve in a manner of compressing a spring through the teeth of an external toothed ring on the input toothed wheel, later the force is transferred to the double toothed wheel by virtue of the teeth of the first external toothed ring of the double toothed wheel in a manner of compressing the spring through the teeth of the second internal toothed ring of the input toothed sleeve, then the force is transferred to the output toothed sleeve by virtue of the teeth of the first internal toothed ring of the output toothed ring in a manner of compressing the spring through the teeth of the second external toothed ring of the double toothed wheel, and then the force is transferred to the output toothed wheel by virtue of the teeth of the external toothed ring of the output toothed wheel in a manner of compressing the spring through the teeth of the second internal toothed ring of the output toothed sleeve, and finally, the output toothed wheel is used for transmitting the torque by virtue of the force transfer pin through the output shaft.

The invention provides a toy gyro good in defensiveness. The toy gyro comprises a spiral cover, a spiral sheet, a spiral base and a hillock point, and is characterized by further comprising an elastic shock absorption piece for buffering impact force when the gyro is impacted. The shock absorption piece is provided with an elastic part used for resisting impact and a connection part fixedly connected with the spiral base. The elastic part is located on the periphery of the spiral base through fixed connection of the connection part and the spiral base, and therefore when the gyro competes with other gyros and the other party impacts on the elastic part, impact force will be reduced due to elastic deformation of the elastic part; thus, the shock absorption effect is achieved to make the gyro rotate stably, anti-impact force is produced and returned to the other party at the same time to interfere the other party, and accordingly the win rate of the gyro is improved. The toy gyro is strong in interestingness, the elastic property of the elastic shock absorption piece can be changed by a player according to judgments so as to achieve a better anti-impact effect, the method to play the toy gyro is novel, the toy gyro can attract more players, and manipulative ability and competitive ability of children can be trained at the same time.

A shelf assembly includes a shelf and a mounting structure for mounting the shelf on a substantially vertical surface. The shelf is pivotably mounted on the mounting bracket proximate the rear end and pivots from an open position to a closed position and from the closed position to the open position. An engagement structure on the shelf, which may optionally be positioned proximate the rear end of the shelf, is configured so that a force applied to the engagement structure when the shelf is in the closed position will urge the shelf toward the open position. The shelf assembly is particularly useful in hospital settings where hospital staff need to open and close the shelf without the use of their hands.

The invention discloses an anti-tilting dual protection device of a hanging basket. The anti-tilting dual protection device of the hanging basket is provided with two sets of rope clamping mechanisms,and a safety rope and a working rope penetrate the rope clamping mechanisms correspondingly. A swing arm mechanism is in transmission connection with the two rope clamping mechanisms at the same time. When the anti-tilting dual protection device moves, the swing arm mechanism simultaneously triggers the two rope clamping mechanisms, and the two rope clamping mechanisms synchronously move to clampthe ropes penetrating the rope clamping mechanisms. During running, when protection of any one set of rope locking device loses efficacy, including that a safety lock loses efficacy or a steel wire rope is broken, the protection of the other set of rope locking device is still effective, and the anti-tilting reliability of the hanging basket is greatly improved. An arranged guide wheel and the swing arm mechanism are coaxial, constraint is formed on the horizontal shifting of the working rope, the tilting rotating center of a suspended platform coincides with the rotating center of the swingarm mechanism, and the effects of external factors on the rope locking angle of the safety lock are eliminated. The anti-tilting dual protection device of the hanging basket has the remarkable advantages of being high in rope locking precision, simple in structure, reliable in action and low in cost and is suitable for being widely applied in the double-hanging point hanging basket.

A viaduct pier detachable anti-collision device based on non-Newtonian fluid comprises a strip-shaped anti-collision body and high-strength studs used for fixing, the strip-shaped anti-collision bodycomprises a deformable hard layer, a buffer layer, a rubber bag and a non-Newtonian fluid filler, wherein the deformable hard layer is of a strip-shaped closed structure with a cavity; the buffer layer is arranged between the rubber bag and the deformable hard outer layer, and the buffer layer is filled with rubber; the rubber bag is a closed bag of which the upper end and the lower end are respectively provided with a fluid inlet and a fluid outlet, the fluid inlet and the fluid outlet are led to the exterior of the deformable hard layer, and the interior of the rubber bag is filled with thenon-Newtonian fluid filler; and the strip-shaped closed structure is fixed to a viaduct pier on the pier face of one side deviating from the driving direction through high-strength studs, and meanwhile the strip-shaped anti-collision body and a pier foundation are fixed through the high-strength studs. The beneficial effects are that the anti-collision performance of the non-Newtonian fluid anti-collision device is guaranteed by utilizing the non-Newtonian fluid mechanical property, and the impact force of a vehicle load is effectively buffered.

The invention discloses a bucket tooth made of a wear-resistant composite material, and a preparation method thereof. The bucket tooth made of the wear-resistant composite material comprises a tooth head made of a composite material, a metal-matrix tooth tail and a rubber ring, wherein the tooth head made of the composite material is connected with the metal-matrix tooth tail; a pin shaft hole isformed in the metal-matrix tooth tail; and the rubber ring is sleeved in the hole. The preparation method comprises the steps of mixing iron powder and ceramic particles, then adding absolute ethyl alcohol, ball-milling mixing, adding a binding agent, uniformly stirring, filling into a die, carrying out microwave calcining to obtain a tooth head precast made of a composite material, fixing the tooth head precast made of the composite material onto a working surface of a female die, casting molten metal, ejecting a male die, cooling for demoulding, machining to obtain the pin shaft hole, carrying out heat treatment, and placing in the rubber ring so as to obtain the bucket tooth made of the composite material; and compounding the ceramic particles on the tooth head, so that a wear-resistingproperty is improved, the bucket tooth not only has favorable plasticity of metal but also has high hardiness and high wear resistance of the ceramic particles, the favorable working efficiency of the equipment is ensured, the impact stress is reduced due to the rubber ring, and the service life is remarkably prolonged.

The invention discloses a hydraulic support double-telescopic upright post, comprising an outer cylinder body, a middle cylinder body arranged in the outer cylinder body and a movable cylinder body arranged in the middle cylinder body. The middle cylinder body and the outer cylinder body are respectively formed by welding the cylinder with the cylinder bottom provided with a joint check mouth, and a ring groove is cut inside the joint check mouth at the bottom of the middle cylinder body or/and the outer cylinder body. The upright post is just characterized by the ring groove cut inside the joint check mouth at the bottom of the middle cylinder body or/and the outer cylinder body. Therefore, according to mechanical principle, when high concentrated stress is formed, the inside thin wall structure of the check mouth easily deforms due to the presence of the ring groove, and the deformation does not affect the overall structural performance of the upright post due to the presence of a size gap. In the deformation process, the local high stress is released, thus abating the impact stress of narrow gaps at the cylinder and the joint check mouth of the cylinder bottom, optimizing the overall structural performance of the cylinder body and effectively prolonging the service life of the telescopic upright post.

The invention relates to the technical field of installation projects of stone curtain walls, in particular to a reinforced structure, system and method of a back-bolt type stone curtain wall mountingjoint. A groove with the bottom expanding is formed in the back surface of a panel body of the joint reinforced structure, and a prefabricated shim is installed between a back bolt and the groove, the load bearing on the front surface of the panel body changes from the interaction between the original back bolt and a thinner panel on the front surface of the groove to the interaction between theback bolt and the prefabricated shim. The load to be borne depends on the high tensile strength of the shim, the bearing load is transmitted to the back surface of the panel to reduce the impact stress and shear stress between the back bolt and the panel body, so that when larger load is applied on a curtain wall assembly system, the prefabricated shim can be used for avoiding direct contact between the back bolt and the panel body, and the generation of stress concentration problem is reduced. The joint reinforced method can simplify the technological process, improves the efficiency and reduces the production cost.

This invention relates to one high voltage breaker linear motor operation structure, which belongs to transducer device technique field, which comprises linear motor and its servo controller, wherein, the linear motor secondary or high voltage breaker dynamic probe are connected through isolation pull bar; the linear motor is connected to speed sensor and servo controller through isolation pull bar.

The invention discloses a nano-sol combined wear-resistant board used for a main iron channel of a blast furnace. Raw materials of the wear-resistant board comprise, in parts by weight, 30-45 parts ofmagnesium-containing aluminium-containing spinel alumina, 20-30 parts of electro-fused dense alumina, 20-30 parts of SiC, 6-16 parts of nonoxide compound powder, 2-6 parts of activated aluminium oxide micro powder, 1-4 parts of silicon metal powder, 4-8 parts of nano-aluminum sol, 0.05-0.1 part of wetting agent and 0.1-0.5 part of explosion-proof fibers, wherein the nonoxide compound powder is composed of, in parts by weight, 1-3 parts of carbon black, 2-4 parts of silicon nitride, 1-5 parts of titanium carbonitride and 2-4 parts of aluminium titanate. The invention further discloses a production method and application of the wear-resistant board. By means of the nano-sol combined wear-resistant board used for the main iron channel of the blast furnace and the production method and the application thereof, the erosion resistance, the wear resistance and the corrosion resistance of a lining material of the main iron channel can be improved, a work environment of workers can be improved, remedial work time of the main iron channel can be shortened, and the service life of the main iron channel can be prolonged.

The invention discloses a series topological light-emitting diode (LED) switching power circuit. The circuit comprises a power input end, an input filter, a series topological electrical energy converter, an isolated electrical energy output end and a power output end, which are sequentially connected in series to form a loop. The problems of low electrical energy conversion efficiency, short service life of an LED, non-constant peak points of set output current and voltage, circuit structure complexity, large size, high product cost and the like of the prior art are solved, and the circuit has the characteristics of simple structure, high electrical energy conversion efficiency, constant current and voltage peaks, small size of a high-power density product, and the like.

The invention discloses a wear-resistant structure without damaging a matrix. The wear-resistant structure comprises a transition layer overlaid on the matrix, a round hole with the depth smaller than the thickness of the transition layer and incompletely consistent depth is processed in the transition layer, and a welding wear-resistant stud is overlaid in the round hole. The transition layer has better toughness and processability, and the round holes are formed in the transition layer, so that the transition layer is not easy to crack; the transition layer with good toughness is matched with the welding wear-resistant column nails with high strength and good wear resistance to form a soft and hard staggered structure, so that the impact stress of a hard material on the wear-resistant structure can be relieved; the welding wear-resistant stud is not in direct contact with the matrix, so that direct damage to the matrix can be effectively reduced; and the external height of the welded wear-resistant stud nail is consistent but discontinuous, so that the problem that a continuous wear-resistant alloy layer formed by depositing wear-resistant alloy on the matrix in the prior art is easy to crack is effectively solved. The invention further discloses a preparation method of the wear-resistant structure, the service cycle of the wear-resistant structure is effectively prolonged, the matrix is protected from being damaged, and the wear resistance is improved.

The invention relates to a golf club shaft head, comprising a front side casing piece and a rear side casing piece combined with the front side casing piece forming a shaft head casing. Formed by alloy, or Maraging steel, or stainless steel or other metals with good elasticity, the front side casing piece is equipped with a striking surface, an annular dish part extends backwards from the striking surface, the whole dish part is of cup shape, a scarf part is arranged at the outer end of the dish part, and the distance between the striking surface and the outer end of the dish part is equal to or larger than 8 centimeters, while the thickness of the dish part is equal to or less than 2 centimeters; formed by magnesium alloy, or aluminum alloy, or other lightweight metals with relatively light specific gravity, the whole rear side casing piece is of deep cup shape, and a scarf part is arranged at the margin of an open end of the rear side casing piece for scarf connection with the scarf part of the front side casing piece; a neck of the casing of the shaft head is arranged on the rear side casing piece. The invention has the advantages that the invention can be used merely after the front side casing piece is jointed with the rear side casing piece with epoxy resin, the casing pieces are free from breakage and falling off, and the problems of insufficient weld strength and bad jointing effect are solved.

The invention provides a fixation device for rehabilitation of fractures of the patella inferior pole. The fixation device for rehabilitation of the fractures of the patella inferior pole comprises afirst perforation, a fixing plate and a second perforation which are connected sequentially, wherein a strip-shaped structure passes through the first perforation and the second perforation, the strip-shaped structure is used for fixing the fixation device to the fracture positions of the patella inferior pole and connecting the patella inferior pole with the patella main body tightly and closely,and a closed ring can be formed by the strip-shaped structure; and the fixing plate can be used for connecting the fractured patella inferior pole with the patella main body fixedly so as to achievethe purpose of fracture healing. Through the fixation device, the fractured block of the patella main body and the fractured block of the patella inferior pole of a patient can be in close contact, pressurized fixation is achieved, subsequent fracture rehabilitation can be accelerated, frequent operation and damage to the patella inferior pole of the patient can be reduced greatly, risks of postoperative complications can be reduced effectively, and the speed of rehabilitation can be improved.