10 results about "Stress strength" patented technology

The utility model discloses an anti-rotation internal thread pin for a server sliding rail. The anti-rotation internal thread pin comprises a mounting plate, a fixing plate is arranged at the front end of the mounting plate, special-shaped holes are formed in the two sides of the interior of the fixing plate, a reinforcing cylinder is arranged in the fixing plate, a lock nut is arranged on the surface of the reinforcing cylinder, and an internal thread hole is formed in the reinforcing cylinder. According to the anti-rotation internal thread pin for the server sliding rail, through the design that threads are arranged in the reinforcing barrel and on the surface of the reinforcing barrel, a nut at the tail end of the reinforcing barrel is matched with an anti-loosening nut to clamp a fixing plate, then a bolt is fixed to a base or a supporting structure through an internal thread hole, and the bolt is matched with a captive screw through the internal thread hole; the device can be connected with a server case hanging lug on the pin at any position of the upper, middle and lower parts of the front end of the corresponding sliding rail, meanwhile, the stress strength of the bolt is further increased, and the problems that the stress is too large and the bolt is broken and damaged due to the fact that the weight of the server is large and the gravity is concentrated on the bolt are solved.

This utility model relates to the field of utility pole reinforcement and discloses a reinforcement device for utility poles, comprising: multiple sets of reinforcement components, each set of reinforcement components including at least a first clamp component, a second clamp component, and two support arms. The first clamp component is fixedly connected to the upper part of the cement pole to be reinforced, and the second clamp component is fixedly connected to the lower part of the cement pole to be reinforced. The two support arms are symmetrically arranged, with their ends fixedly connected to the first clamp component and the second clamp component, respectively. The multiple sets of reinforcement components are staggered along the axial direction of the cement pole, and the multiple support arms are staggered along the radial direction of the cement pole. The reinforcement device provided by this utility model, by staggering the multiple sets of reinforcement components along the axial direction of the pole and cooperating with the multiple support arms staggered along the radial direction of the pole, forms a "three-dimensional mesh" force-bearing structure, improving the stress strength and distributing external forces to multiple points on the upper and lower sections of the pole, avoiding fracture at the joint due to local stress overload.

The invention discloses a method and a device for evaluating safety of a pipe column of an electric submersible screw pump lifting system. The method comprises the following steps: constructing a well depth track and a well curvature model according to well bore data and well track data; according to the well depth track and the borehole curvature model, the stress of a tubular column of the electric submersible screw pump lifting system under different working conditions is analyzed and determined in combination with the stress of the electric submersible screw pump unit; the working conditions comprise well lifting, pump lowering and unit operation processes; establishing a tubular column stress model of the electric submersible screw pump lifting system according to the stress of the tubular column of the electric submersible screw pump lifting system under different working conditions; determining the maximum stress intensity on the cross section of the tubular column based on the tubular column stress model of the electric submersible screw pump lifting system; and according to the maximum stress strength on the cross section of the tubular column, determining the strength safety coefficient of the tubular column by using a tubular column strength safety coefficient formula.

The application provides a design method of a special fixture for positioning energy storage spot welding based on a guide vane assembly, comprising the following steps: determining an energy storage spot welding process route, first spot welding a baffle plate 1 and a baffle plate 2, then spot welding a honeycomb, and then spot welding and combining with a main part. Determining a part positioning reference, and selecting an outer circle of the part as a positioning reference surface. Selecting a spot pole base material, and selecting brass or red copper as the spot pole base material. Designing a detachable spot pole base, preferentially assembling the baffle plate 1 and the baffle plate 2 during spot welding, forming a baffle plate assembly, and increasing the welding points and the welding strength to form a honeycomb assembly. The application has the following advantages: the part size precision is ensured, the stability and the inclusiveness are considered at the same time, and the spot welding efficiency is improved. The fitting degree between the honeycomb and the baffle plate is improved through the adaptive curvature, the stress strength of the part during the energy storage spot welding is increased, the combination between the parts is strengthened, the deformation of the baffle plate and the honeycomb is reduced, and the vacuum brazing quality of the part is improved.

The utility model relates to the technical field of tunnel construction, and discloses a modularized subway underground excavation construction steel arch structure which comprises a plurality of arch units which are detachably connected, every two adjacent arch units are connected through a connecting structure, and a prestress tensioning adjusting assembly is fixedly arranged at the position of each connecting structure. The prestress tensioning adjusting assembly is used for applying prestress to the connecting structure and adjusting the bending radian, the prefabricated arch frame units are quickly assembled through the connecting plates and the bolts to form a primary steel arch frame structure, then prestress is applied to the connecting position through the prestress tensioning adjusting assembly, and the steel arch frame structure is formed. The steel arch frame has the advantages of being simple in structure, capable of improving the compression resistance of the connecting position, ensuring that the steel arch frame has enough stress strength, and finally finely adjusting the bending radian of the arch frame by adjusting the tensioning force according to construction requirements to ensure the integrity and continuity of the structure.

The high-stability foundation bolt comprises a foundation bolt body, a bottom plate is fixedly installed at the bottom end of the foundation bolt body, an inclined vertebral plate is installed on the upper surface of the bottom plate in an attached and welded mode, and a set of supporting plates is fixedly installed in the middle of each side of the upper surface of the inclined vertebral plate. A conical disc is fixedly welded to the position, located at the top ends of the supporting plates, of the exterior of the foundation bolt body, and a positioning plate is welded to the position, located on the upper side of the conical disc, of the exterior of the foundation bolt body. The overall stress area of the foundation bolt body is increased through the inclined vertebral plate fixedly installed on the upper surface of the bottom plate, the stability of the foundation bolt body in the using process is guaranteed, meanwhile, the supporting plate installed on the upper surface of the inclined vertebral plate is used for reinforcing and connecting the inclined vertebral plate and the conical disc, and meanwhile the using strength of the bottom of the foundation bolt body can be improved; and the stress plate installed on the upper surface of the conical disc can further improve the stress strength of the foundation bolt body when the foundation bolt body is buried in soil for use.

The invention provides a safety early warning method and device for a main beam of a bridge crane, and belongs to the field of mechanical engineering. The method comprises the following steps: acquiring index data of a plurality of crane samples of the same type; for each item of index data, determining an entropy value corresponding to the index data according to the dispersion degree of all sample index data; calculating the objective weight of each piece of index data according to the proportion of the entropy of each piece of index data to the entropy of the overall index data; performing weighted summation on the multiple index data of the crane to be evaluated according to the objective weight to obtain an early warning index, and performing graded early warning according to the early warning index; the state indexes comprise a stress intensity index, a rigidity index, a crack state index, a corrosion depth index and a maintenance state index. According to the method, a comprehensive evaluation system covering five dimensions including strength, rigidity, cracks, corrosion and maintenance is constructed through a multi-dimensional index system and a weighted fusion model, so that the one-sidedness of single parameter evaluation is overcome, and safety early warning is more reliable.

The utility model discloses a steel structure frame node connecting device, which relates to the technical field of steel structures and comprises a bottom plate, and the bottom plate is mounted on steel structure frame columns through mounting holes and bolts arranged at four corners of the bottom plate. The connecting piece is arranged in the middle of the outer side of the bottom plate; the reinforcing pieces are arranged at the upper end and the lower end of the joint of the connecting piece and the bottom plate; and the extension plates are mounted in the middles of the two sides of the connecting piece. According to the steel structure frame node connecting device, the bottom plate and the connecting piece are tightly connected through the inserting connection of the inserting blocks and the inserting grooves and the fixing mode of the attaching plates and the bolts, meanwhile, the reinforcing piece is made of angle steel and is provided with the reinforcing blocks and the reinforcing ribs to form a triangular stable structure, and the mounting strength and the stress strength of the connecting piece are effectively improved; compared with the connection mode that only a screw rod is matched with a sliding block in the prior art, the requirement for large stress of a steel frame connection joint can be better met, and safety and stability of the structure are guaranteed.

The present application belongs to the technical field of structure design, and discloses a torsional spring analysis and optimization method and system. According to torsional spring parameters including torsional spring diameter, torsional spring medium diameter, torsional spring effective number of turns, free angle, material elastic modulus, initial working torsion angle, limit working torsion angle and force arm length, the analysis result of the torsional spring is calculated, wherein the analysis result includes initial working torque, initial bending stress, limit working torque, maximum bending stress, static load allowable stress and strength residual coefficient. The present application encapsulates the complicated calculation process of different types of torsional spring analysis through programming to generate an analysis and optimization tool. By simple selection and input, the torsional spring analysis result can be quickly obtained by one key, and whether the torsional spring meets the strength requirement is checked. The present application is simple and direct, and according to the analysis result, the torsional spring is quickly iteratively optimized according to the situation, the design is guided, the calculation and analysis errors of structure research and development designers are avoided, repeated calculation is avoided, the workload is reduced, and the work efficiency is improved.

The present application relates to the technical field of hydraulic system, provide a kind of hydraulic pipeline fatigue relieving method, device and hydraulic pipeline system, the method introduces the corresponding relationship between the different rotational speed of predetermined variable frequency pump, the different opening number of side branch pipe and the pipeline pressure at the outlet of pipe joint connected by the driving equipment of hydraulic pipeline system, filter out the combination satisfying minimum pressure demand, can quickly meet the pressure regulation demand of hydraulic pipeline system. By obtaining the normal stress intensity of main pipeline under each combination configuration, and selecting the target combination with the minimum normal stress intensity of main pipeline from it to configure the hydraulic pipeline system, the main pipeline can be guaranteed to have the minimum normal stress intensity, effectively relieving the fatigue fracture problem caused by excessive normal stress of main pipeline.