102 results about "Compressive deformation" patented technology

The utility model relates to the technical field of expansion joints, in particular to a deformed steel-elastic body combined seamless expansion joint structure and a bridge, the expansion joint structure increases the coupling action area and the coupling force of an elastic body and deformed steel through the combined structural design of a deformed plate, the deformed steel, the elastic body and a covering layer, so that the expansion joint structure is more flexible and reliable. The phenomenon that weak connecting surfaces are easy to debond too early is improved, the service life of the structure is prolonged, and the durability of the structure is improved; the deformation direction of the elastic body is controllable, the road surface is prevented from bulging, and the driving safety problems such as bumping are completely eradicated; the covering layer in the expansion joint area can cooperate with the elastic material for tension and compression deformation, meanwhile, it is guaranteed that the rigidity transition from the asphalt concrete layer in the non-expansion area to the covering layer is smooth, and the vicious circle that the bumping phenomenon is caused by the unsmooth road surface, and the local damage of the road surface is more serious due to the impact load under the bumping phenomenon is prevented.

The invention belongs to the technical field of bridge engineering, and particularly relates to an analysis method for intelligently sensing a hanging basket of a corrugated steel web box girder bridge, a terminal and a storage medium, and the method comprises the steps: obtaining deformation data of a plurality of measurement points installed on the hanging basket of the corrugated steel web box girder bridge in an actual asynchronous method construction process; establishing an initial finite element model based on the geometric information of the hanging basket structure, and setting an elastic constraint condition at each support position of the initial finite element model; according to the invention, the static level gauge, the inclinometer and the strain gauge are arranged at the key positions of the hanging basket to construct a multi-source sensing monitoring network, so that the cooperative sensing of the vertical displacement, the inclination attitude and the structural strain is realized, and the comprehensiveness and accuracy of the state sensing in the construction process are effectively improved. Secondly, a vertical spring unit is introduced into the finite element model to serve as elastic constraint, the vertical compression deformation behavior of the corrugated steel web under the load effect is truly simulated, and the physical authenticity of boundary conditions is remarkably improved.

This invention relates to the field of titanium alloy material preparation technology, and particularly to a multi-pass forming process for TC11 titanium alloy, comprising the following steps: Step 1, preparing titanium alloy bars; Step 2, heating the titanium alloy bars to 950℃ at a heating rate of 5℃ / s; Step 3, after reaching the set temperature, holding the titanium alloy bars at that temperature for 300 s to fully eliminate the temperature gradient inside the sample; Step 4, performing three compression deformations on the titanium alloy bars using a press, with a strain rate of 10 s. ‑1 The maximum deformation is 70%; a 10-second isothermal interval is set between each two compression passes; in step five, after deformation, rapid cooling is immediately achieved using water quenching. This invention achieves the technical goal of optimizing the hot forming process of titanium alloys and producing high-performance titanium alloy products.

The invention relates to a display module and a display device, and the display module comprises a display panel which is located in a bending region and a non-bending region; the supporting structure is arranged on one side, in the thickness direction, of the display panel, the supporting structure comprises a first supporting layer and a second supporting layer, and the first supporting layer and the second supporting layer are adjacently arranged in the first direction; at least part of the first supporting layer is located in the bending area, and at least part of the second supporting layer is located in the non-bending area. According to the display module, at least part of the first supporting layer with high elastic modulus corresponds to the bending area, so that local reinforced support with high deformation resistance is provided for the bending area which is prone to collapse when the display module is in the unfolded state; and at least part of the second supporting layer with low elastic modulus corresponds to the non-bending area, so that a flexible buffer area easy to compress and deform is provided for the non-bending area needing to absorb material redundancy when the display module is in the bending state.

Method for connecting a sensor arrangement (20) to a measurement object (2), the method comprising the steps (100) Provide - of a measured object (2), - a sensor arrangement (20) comprising a strain gauge (1) which is at least configured to detect tensile and compressive deformations of a measurement object (2), and an electronic module (19), - a first connecting foil (10a) and a second connecting foil (10b), each containing metallic materials (11, 12) which react exothermically when activated, (200) Placing the first connecting foil (10a) between the strain gauge (1) and the electronic module (19), (300) Activating the metallic materials (11, 12) of the first connecting foil (10a) such that the first connecting foil (10a) heats up in such a way that a metallurgical connection is created between the strain gauge (1) and the electronic module (19), wherein after activating the metallic materials (11, 12) of the first connecting foil (10a) an electronic connection exists between the strain gauge (1) and the electronic module (19), (400) Place the second connecting foil (10b) between the strain gauge (1) and the object being measured (2), and (500) Activating the metallic materials (11, 12) of the second connecting foil (10b) so that the second connecting foil (10b) heats up in such a way that a metallurgical bond is created between the strain gauge (1) and the object being measured (2).

The utility model discloses a soft upholstered furniture splicing corner structure capable of reducing deformation error, which belongs to the field of furniture and comprises a first splicing frame and a second splicing frame, one end of the first splicing frame is in butt joint with one end of the second splicing frame, and the first splicing frame is sequentially wrapped by a first splicing corner inner supporting layer and a first flexible outer layer from inside to outside. The second splicing frame is sequentially wrapped with a second splicing angle inner supporting layer and a second flexible outer layer from inside to outside. The first splicing corner inner supporting layer and the second splicing corner inner supporting layer are soft rubber layers, and the first flexible outer layer and the second flexible outer layer are sponge layers, so that the softness of the furniture can be ensured, and the splicing corner between the first splicing frame and the second splicing frame can be supported through the inner soft rubber layers, and therefore, the compression deformation at the splicing corner can be reduced, and the service life of the furniture can be prolonged. The size of the opening can be reduced; meanwhile, compared with an existing mode of reducing the opening through the technology, the requirement for the technology is simpler, and the production difficulty of furniture can be reduced.

The invention relates to the technical field of fabric testing, in particular to a testing device for high-elasticity blended fabric. The device comprises a tensile strength testing machine, a lifting device is arranged on a workbench of the tensile strength testing machine, two clamp heads are symmetrically arranged on the lifting device, two fastening assemblies are symmetrically arranged in each clamp head, clamping blocks are fixedly connected to the ends of the fastening assemblies, and the two opposite clamping blocks jointly form a clamping face used for clamping the high-elastic fabric; each clamping block is of an elastic composite structure, a plurality of holes are formed in each clamping block, when the two clamping blocks move in the opposite directions and are pressed on the high-elasticity blended fabric, elastic clamping block bodies are pressed to deform, local negative pressure is generated at hole openings of the holes in the elastic clamping blocks under the action of compression deformation, the corresponding portions of the fabric are slightly adsorbed and slightly bulged towards the interiors of the holes, and therefore the fabric is formed. A plurality of micro anchor points are formed, and flexible adsorption contact replaces traditional rigid tooth top meshing.

The invention discloses a wear-vibration coupling modeling method and device for a roller linear guide rail pair system, and the method comprises the steps: dividing the movement process of a roller into an LC stage and two transition stages according to the contact load, deformation state and wear mechanism difference of the roller in a sliding block track; respectively establishing a sliding wear model and an impact-sliding composite wear model, and constructing a non-uniform wear depth expression taking space coordinates as input; the multi-state contact behavior is described by introducing roller compression deformation and contact angle change, and the actual contact area under different contact states is determined based on the Hertz contact theory; in combination with roller operational analysis and a coordinate transformation relation, mapping of the abrasion depth among a roller coordinate system, a sliding block coordinate system and a guide rail coordinate system is achieved, and the abrasion effect of each roller is accumulated through a time discretization method; a five-degree-of-freedom nonlinear dynamic model is introduced, coupling analysis of pretightening force degradation and vibration response is achieved, and dynamic performance changes of the guide rail system in long-term operation are predicted.

This application belongs to the field of wearable robot technology, specifically providing a mechanical load-bearing exoskeleton system based on ground reaction force self-triggering. The exoskeleton system includes an upper body mechanism, a thigh mechanism, a knee joint mechanism, a lower leg mechanism, and a foot mechanism. The knee joint mechanism includes a knee joint support, a locking component, and a transmission assembly. When the foot mechanism touches the ground and the sole of the foot is compressed and deformed by the ground reaction force, the thigh mechanism slides downward relative to the knee joint support. The transmission assembly drives the locking component to slide towards the thigh mechanism and connect with it, thereby locking the knee joint mechanism. The compression deformation of the sole of the foot caused by the ground reaction force is used as a trigger signal to automatically trigger the locking of the knee joint mechanism. The knee joint mechanism can lock at any reasonable angle, so that when the wearer is going up or down slopes, climbing stairs, or bending their knees for cover, the exoskeleton system can still effectively assist the human body in bearing the load by locking the knee joint mechanism.

The invention relates to the technical field of shock absorption supporting of aircrafts, and discloses a low-frequency shock absorption supporting structure and an aircraft, and the supporting structure is a metamaterial which is formed by arranging a plurality of cell element structures with the same structure in a planar array mode to form one or more layers of coupled and stacked metamaterials; the cell structure is a cylindrical structure enclosed by four wall plates, and a cavity is formed in the cell structure; each wall plate comprises a first plate section and second plate sections located on the upper side and the lower side of the first plate section. The first plate section is rectangular, and the second plate section is isosceles trapezoid; the first plate section is provided with two first edges which are opposite up and down; the second plate section is provided with a second edge parallel to the first edge, and the second edge is shorter than the first edge; the first plate sections of the adjacent cell structures are attached to each other, and the openings of the upper and lower cell structures are aligned during stacking. Through relative compression deformation motion between the top substrate and the cell element structure, vibration energy is absorbed, and the influence of vibration on precise instruments in the aircraft is reduced.

The present disclosure relates to a tactile presentation device that includes a tactile presentation knob placed on an operation screen and for presenting a tactile sense to a user via the tactile presentation knob. The tactile presentation knob includes a conductive elastic portion that includes a surface layer facing the operation screen and an inner layer located on the side opposite to the operation screen, and an operation part that fixes the conductive elastic portion. The surface layer is set to be subjected to greater shear deformation than the inner layer by an operation of the tactile presentation knob, to generate vibrations by a change in the frictional force, and to be subjected to greater compressive deformation than the inner layer by a press of the tactile presentation knob. The inner layer is set to have higher vibration transmissibility than the surface layer.

This invention belongs to the technical field of concrete pile end plates, specifically relating to a mechanical connection structure for end plates and a method for producing end plate connectors. The mechanical connection structure includes a first end plate and a second end plate respectively disposed at the ends of two concrete piles. Both the first and second end plates have tension holes and insertion holes. Internal threads are provided in the tension holes. An end plate connector is installed on the first end plate. One end of the connector has a stud that mates with the tension hole, and the other end has a compressible barb. When the two concrete piles are joined, the barb is compressed and inserted into the insertion hole, automatically opening after passing through the hole, thus achieving a mechanical locking connection between the two end plates. A plug is provided in the insertion hole to prevent blockage during concrete pouring and to provide space for the barb to extend. This invention enables rapid connection of concrete piles, improving pile splicing efficiency and connection stability. The end plate connector can be made from existing failed tension bolts, greatly saving production costs.

This invention relates to an integrated variable camber wing based on a piezoelectric-driven torsional cubic superstructure, comprising a wing skeleton and a skin. The wing skeleton includes multiple torsional cubic superstructures arrayed along the wing chord direction. Each torsional cubic superstructure is a cube formed by an array of multiple unit-cell torsional superstructures. Adjacent unit-cell torsional superstructures in the wing length and thickness directions share a straight rod, while adjacent unit-cell torsional superstructures in the wing width direction share four Z-shaped piezoelectric rods. Each unit-cell torsional superstructure is a cube formed by an array of four cell units, with adjacent cell units sharing a straight rod. Each cell unit includes Z-shaped piezoelectric rods and straight rods. Two Z-shaped piezoelectric rods are connected to the two ends of two straight rods. Each Z-shaped piezoelectric rod at both ends of the torsional cubic superstructure is connected to the skin. When all the Z-shaped piezoelectric rods of the unit-cell torsional superstructure undergo compressive deformation in the height direction, the unit-cell torsional superstructure undergoes torsional deformation, thus causing the torsional cubic superstructure to undergo torsional deformation. By converting the compressive deformation of the cellular unit into the torsional deformation of the compressive-torsional cubic superstructure, the wing camber is changed, and the drive components are eliminated, thus realizing the lightweight design of the morphing wing.

The utility model relates to a silica gel foot pad compression deformation test device which comprises a rectangular bottom plate, a plurality of arrayed positioning concave holes are formed in the bottom plate, two transverse guide grooves are formed in the upper end faces of the left side and the right side of the bottom plate respectively, and the guide grooves are located between the positioning concave holes. U-shaped handle storage grooves are formed in the lower end faces of the left side and the right side of the bottom plate correspondingly, the handle storage grooves are located under the guide grooves, and U-shaped handles are inserted into the handle storage grooves; a rectangular pressing plate is arranged over the bottom plate, transverse insertion grooves right opposite to the guide grooves are formed in the two sides of the pressing plate respectively, a rectangular inlet is formed in the end, close to the middle of the pressing plate, of each transverse insertion groove, and compression grooves connected with the inlets are formed in the front side wall and the rear side wall of the upper portion of each transverse insertion groove respectively. According to the device, the compression amount of the silica gel foot pad is conveniently controlled, meanwhile, the plate for compressing the silica gel foot pad is convenient to mount and connect, and the compression deformation test of the silica gel foot pad is facilitated.

The invention relates to a probe cleaning sheet with elastic buffering, which is mainly used for cleaning foreign matters on the surface of a probe, and comprises a subbase layer; the middle layer is stacked on the top surface of the subbase layer, and the outer surface of the middle layer is subjected to surface processing treatment; the grinding layer is stacked on the top face of the middle layer, the grinding layer is formed by mixing a second material piece and a plurality of first grinding particles, the surface of the middle layer is tightly connected with the grinding layer after surface machining treatment, and the ductility of the second material piece in the grinding layer is larger than that of the first material piece in the middle layer; the release layer is movably attached to and torn from the top surface of the grinding layer; under the condition that the grinding layer has high elastic deformation and the middle layer has the compression characteristic, when the probe is inserted to apply force, the grinding layer can be elastically stretched downwards according to the characteristic of the second material piece, and a plurality of first grinding particles are in contact with foreign matters on the surface of the probe, so that the foreign matters can be separated from the surface of the probe; therefore, the grinding layer is driven to really coat the probe, so that the foreign matters on the probe can be completely removed.

The application discloses a large-span prestressed steel structure energy dissipation and vibration reduction self-resetting cable device, which comprises a baffle arranged on the left and right sides, a cable penetrating through the baffles, a cushion block and an anchor for anchoring the cable, a steel pull rod penetrating through the left and right baffles in sequence, a cushion plate welded at the two ends of the steel pull rod, a steel strand penetrating through the center of the steel pull rod, a second anchor for anchoring the steel strand, a spiral spring nested outside the steel pull rod and welded at the inner sides of the left and right baffles at the two ends, respectively, an upper dislocation plate welded at the inner side of the left baffle, a lower dislocation plate welded at the inner side of the right baffle, an energy dissipation device penetrating through upper and lower strip-shaped bolt holes in sequence, wherein the energy dissipation device comprises a screw rod, upper and lower nuts and upper and lower friction gaskets, and further comprises a friction energy dissipation block embedded between the upper and lower dislocation plates and a stopper for preventing the friction energy dissipation block from falling off; the device can realize energy dissipation and vibration reduction through the tensile and compressive deformation of the spiral spring and the relative sliding of the upper and lower dislocation plates, and can realize the self-resetting function through the steel strand in the steel pull rod and the spiral spring.

This invention provides a structure for improving the vibration reduction performance of fixed frog turnouts, belonging to the field of track technology. It includes a wing rail and a frog vibration-damping metal component. A spacer is provided between the wing rails, and the frog vibration-damping metal component is located between the wing rails. Both sides of the frog vibration-damping metal component have outward protrusions. Multiple sets of limiting blocks are provided on the spacer. The outer side of the outward protrusions is consistent with the arc surface of one side of the wing rail, and one end of each set of limiting blocks is connected to the bottom of the outward protrusion. This invention solves the technical problem of upward force generated at both ends of the vibration-damping device under train load, leading to upward displacement and adversely affecting the wheel flanges. It achieves the technical effect of limiting the upward displacement of the vibration-damping device, improving system stability, and not affecting the compression deformation of the elastic material and the vibration reduction performance.

The utility model relates to the technical field of coal pillar compressive deformation test, and discloses a test device for monitoring vertical compressive deformation of a coal pillar, which comprises a cabinet body and a test mechanism, one side of the cabinet body is opened, a glass window is hinged at the opening of the cabinet body, and a coal pillar sample is placed in the cabinet body. A plurality of displacement sensors are uniformly and circumferentially distributed on the outer wall of the coal pillar sample in the vertical direction, the top end of the coal pillar sample is connected with a testing mechanism, the testing mechanism comprises a pressure applying piece, an angle adjusting piece and a rotating piece, and the angle adjusting piece performs angle change adjustment on the top, in contact with the coal pillar sample, of the pressure applying piece. Under the cooperation of the pressure applying piece, the angle adjusting piece and the rotating piece, pressure applying adjustment can be carried out on the top of the coal pillar sample, pressure applying in different directions can be carried out on the coal pillar sample, and therefore specific data of the vertical compression deformation of the coal pillar sample can be obtained through the displacement variation of the displacement sensors.

The utility model relates to a metal damper and a power transmission tower, and relates to the technical field of power transmission tower structure engineering. Comprising an inner arc-shaped metal plate and an outer arc-shaped metal plate which are concentrically arranged, a first connecting piece which is simultaneously connected with one end of the inner arc-shaped metal plate and one end of the outer arc-shaped metal plate, and a second connecting piece which is simultaneously connected with the other end of the inner arc-shaped metal plate and the other end of the outer arc-shaped metal plate, the first connecting piece and the second connecting piece are connected with a node to be subjected to torsion resistance, the inner arc-shaped metal plate and the outer arc-shaped metal plate are concentrically arranged, the relative displacement difference is generated when the node is twisted, the inner arc-shaped metal plate bears larger compression deformation due to the small curvature radius, and the outer arc-shaped metal plate is mainly subjected to tensile deformation due to the large curvature radius. Torsional energy is dissipated synergistically through plastic deformation of metal materials, torsional deformation can be effectively resisted, and breakage of the connecting portion of the power transmission tower is avoided.

The present application relates to compressed air energy storage technology field, specifically to a kind of gas storage cavern surrounding rock compression deformation simulation design method, equipment and medium.The present application is simulated surrounding rock deformation by two parts of bearing layer and deformation layer, the controllable deformation value generated by simulated lining layer is converted into the deformation value measurable to deformation layer, so as to facilitate to simulate the specified deformation of surrounding rock under the action of internal pressure by adjusting the opening parameter of deformation layer;When designing, given lining target deformation is taken as control target, the error of opening rate or the error of actual maximum compression deformation is judged to preliminarily screen out the opening type of deformation layer that can realize lining target deformation, then whether the opening of deformation layer is basically closed under the action of dead weight and under the action of maximum internal pressure P is checked, the opening type that finally meets the design requirement is screened out, so that the simulation test device simulates the pressure-bearing deformation capacity of surrounding rock under given condition, and the adjustment amount is small.

The invention discloses an energy absorption performance testing device and method for an energy absorption pipe based on a drop hammer, and belongs to the technical field of mechanical property testing, and the device comprises a mounting frame, a hammer body assembly, a first sensor, a second sensor, a mounting seat, a guide rod, an impact head, a lifting mechanism and a control system, a vertically extending guide rail and a mounting base top end face perpendicular to the guide rail are arranged on a mounting frame, so that a hammer body assembly in sliding connection with the guide rail can vertically impact an impact head and an energy absorption pipe which are located on the top end face of the mounting base after being lifted by a lifting mechanism; compression deformation of the energy absorption pipe in the impact process is guided through a guide rod penetrating through the energy absorption pipe and a first through hole which is in clearance fit with the guide rod and extends in the vertical direction in the installation base. A first sensor is arranged on the hammer body assembly to measure the real-time acceleration of the hammer body assembly, a second sensor is arranged between the installation base and the installation frame to measure the real-time impact force in the impact process, and then the control system can record acceleration changes and impact force changes in the impact process.

The invention provides an extrusion die and an extrusion method for stirring friction additive forming of a wallboard high rib, the die comprises a locking module and extrusion modules, the two extrusion modules are symmetrically arranged on the two sides of a rib, and the locking module is used for restraining the relative position between the two extrusion modules; the extrusion module comprises a downward pressing piece, a frame body and extrusion components, n sets of extrusion components are arranged on the side, facing the ribs, of the frame body at intervals in the vertical direction, the extrusion components correspond to trapezoidal steps of the ribs one to one, and the downward pressing piece is arranged on the frame body in a vertical sliding mode and located behind the extrusion components; and in the downward pressing process of the downward pressing piece, all the extrusion components are sequentially pushed to stretch out, so that extrusion force perpendicular to the side faces is applied to the side faces of all the trapezoid steps. According to the extrusion die, the compression deformation requirement of a rib structure can be met, pre-deformation control over a rib component is achieved, and the mechanical property of a rib wallboard is improved.

The invention relates to the technical field of construction optimization, and particularly discloses a heavy haul railway transition section inclined jet grouting pile inclination angle optimization method and system based on multi-body coupling dynamics, and the method comprises the steps: constructing a multi-body coupling dynamics model; calculating a vibration response calculation error and adjusting the multi-body coupling dynamic model based on vibration acceleration data and vertical compression deformation data of the multi-body coupling dynamic model and the reduced scale model under different inclined angles of the inclined jet grouting pile; performing dynamic simulation on multiple groups of working conditions based on the verified multi-body coupling dynamic model, and extracting key dynamic response indexes of the transition section under each group of working conditions and a rule of changing along with the inclination angle of the inclined jet grouting pile; fitting an inclined angle-vibration suppression rate-settlement correlation model of the inclined jet grouting pile on the basis of the rule; presetting an optimization target according to a target transition section type determined according to actual engineering requirements and a corresponding train load grade, and obtaining an optimal inclined angle of the inclined jet grouting pile; the vibration and settlement influence of the transition section is reduced.

The application discloses a kind of bank protection reinforcement methods using prefabricated cover plate underwater pressure grouting, it is related to bank protection reinforcement technical field.The method includes the following steps: adding sheet pile outside original bank protection bottom plate;Prefabricated concrete cover plate with pressure grouting hole and pre-buried grouting sleeve;High-elastic rubber pad with opening is added at the bottom of cover plate;Install lifting frame and make its top expose above normal water level;Cover plate is hoisted to the above sheet pile and original bank protection bottom plate, utilize the compression deformation sealing underwater grouting area to be injected of cover plate dead weight and rubber pad, form local closed space;Finally, through the guide of lifting frame, grouting pipe is inserted into pre-buried sleeve from above water surface and carries out underwater pressure grouting.The application is combined by cover plate, rubber pad and grouting sleeve, effectively isolates water flow scouring, maintains stable grouting pressure, adapts to construction error, realizes accurate grouting, converts underwater key operation into water construction, greatly improves construction convenience and safety.

The utility model discloses an elastic cushion layer structure and a railway turnout base plate, and belongs to the technical field of rail transit turnouts, the elastic cushion layer structure comprises a top layer base plate, a coupling base plate and an elastic cushion layer arranged between the top layer base plate and the coupling base plate; the upper surface of the top-layer base plate is provided with a plane for supporting steel rails; protruding parts are distributed on at least one face of the elastic cushion layer, and the adjacent protruding parts are in smooth transition to form grooves. The protruding parts make contact with the top-layer base plate or the coupling base plate, generate compression deformation under the load in the direction perpendicular to the top-layer base plate and generate shear deformation under the load in the direction parallel to the top-layer base plate. The coupling base plate is used for being fixed to a railway switch tie. The transverse rigidity is obviously enhanced under the transverse load effect, so that the torsion resistance of a turnout system is improved, and the problem that a traditional flat plate structure is insufficient in rigidity under the transverse force effect is solved.

The application discloses a kind of high ground stress test methods of deep-buried tunnel surrounding rock.It includes the following steps, step one: after drilling is completed, installation connection and lowering of each instrument equipment in high ground stress test device based on ultra-deep drilling are completed;Step two: pressure equipment is pressurized, high-strength liquid pressure is formed, high-strength liquid pressure reaches hole bottom piston through flexible high-strength pressure pipe, pressure gauge and built-in flexible high-strength pressure pipe;Step three: with the pressure input of pressure equipment, flexible cladding plate on both sides of piston is pressed and moves laterally, and is well cladded with drilling hole wall and gradually applies pressure to drilling hole wall;Step four: the compression deformation of drilling hole wall rock mass after being pressed is measured by micrometer;Step five: P~s characteristic curve is obtained;Step six: ground stress of drilling hole wall rock mass test point is obtained.The application has the advantages of being able to measure and determine ground stress before deep-buried underground chamber or tunnel excavation construction.

The utility model relates to the technical field of embedded channels. The utility model discloses an anti-seismic buffer type pre-buried channel which comprises a pre-buried channel body and a pre-buried rod fixedly connected to the outer side of the pre-buried channel body, and further comprises a connecting assembly which is movably installed on the inner side of the pre-buried channel body, the pre-buried channel is provided with a buffer component, impact force generated by vibration can be firstly transmitted to a connecting plate, and then the buffer component is connected with the pre-buried rod. The buffer spring can be compressed and deformed under the action of impact force, a part of vibration energy is absorbed through elastic deformation of the buffer spring, the influence of the impact force on the whole connecting assembly is reduced, meanwhile, the structural strength between the connecting plate and the pressing block is enhanced through the arc-shaped structure of the arc-shaped supporting plate, and in the process, the connecting plate is not damaged. When the connecting plate deflects relative to the pressing block, the mounting plate can rotate relative to the connecting plate and the arc-shaped supporting plate, at the moment, the arc-shaped elastic piece can evenly disperse impact force, vibration energy is further absorbed and dissipated, and the anti-seismic buffering effect is further improved.

The invention discloses a high-flame-retardant aging-resistant control cable and a preparation method thereof, and relates to the technical field of cables, the high-flame-retardant aging-resistant control cable comprises a conductor layer, an insulating layer, a shielding layer, an inner sheath layer, a flame-retardant layer and an outer sheath layer which are sequentially arranged from inside to outside; the outer sheath layer comprises a rigid substrate layer and elastic convex rings which are arranged on the outer surface of the rigid substrate layer at intervals, the elastic convex rings comprise a plurality of independent convex rings which are continuously arranged, and the cross section of each independent convex ring is semicircular or isosceles trapezoid-shaped; during winding, the extrusion stress of the inner ring of the cable can be absorbed through the compressive deformation of the elastic convex ring, and the traction stress of the outer ring of the cable can be released through the tensile deformation of the elastic convex ring, thereby avoiding the problem of fracture caused by stress concentration of a conventional single-hardness sheath. The design of the independent convex rings enables stress buffering to be more uniform, the continuous arrangement can ensure the protection consistency in the full length range of the cable, the semicircular or isosceles trapezoid cross section can enable the stress dispersion path to be more uniform, and local stress accumulation is reduced.

The present application belongs to the field of thin-walled titanium alloy product forging processing technology, and relates to a titanium alloy seamless gas cylinder and a manufacturing method thereof. The gas cylinder is formed by seamless inertia friction welding of an upper half gas cylinder and a lower half gas cylinder. The upper half gas cylinder and the lower half gas cylinder are both prepared by local and progressive two-way compression deformation of a TC4 titanium alloy cylinder blank through a step forging process. The bottle shoulder and the bottle opening curved surface are formed by layer-by-layer plastic flow of metal under two-way compression stress. The internal material structure is dense and free of daisy skin and wrinkle defects, and an equal wall thickness structure is realized from the bottle body to the bottle opening. The present application solves the problems of daisy skin, wrinkle and uneven wall thickness caused by the absence of internal support in the traditional spinning process by using the step forging process to perform overall plastic forming on the titanium alloy cylinder blank. At the same time, the destruction of the alpha + beta dual-phase structure of TC4 titanium alloy by high-temperature hot spinning is avoided, thereby greatly improving the forming precision, uniformity of the structure and comprehensive mechanical properties of the gas cylinder.

According to the inflatable recreation facility reinforcing structure and the connecting method thereof, the stress strength of the connecting part of an inflatable product can be effectively enhanced by arranging a reinforcing area at the to-be-connected part, and the stress of the connecting part can be effectively dispersed by absorbing impact force through compression deformation when a child bounces by arranging a sunken buffer structure at the connecting part. The stress of the connecting part is reduced by 40-60%, the stress concentration is avoided, and the reliability of the connecting part is improved; by reinforcing the connecting area and designing the sunken structure, the stress abrasion of the connecting part of the inflatable product is effectively relieved, so that children cannot directly contact the sewing / hot melting processing edge, and the abrasion rate is reduced by more than 70%; the inflatable product can be effectively enabled to be more environment-friendly and safer, a gluing process is not needed, the hidden danger of glue volatilization is eliminated, and the requirement of environmental protection of materials is met; the inflatable product can be effectively more structurally durable, the connection strength is improved through the internal reinforcing layer and the mesh sewing technology, and the service life of the product is prolonged by 2-3 times.